* RE: [PATCH 05/13] Have cmake run man pages through text substitution
From: Hefty, Sean @ 2016-09-23 21:23 UTC (permalink / raw)
To: Jason Gunthorpe,
linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
In-Reply-To: <1474658228-5390-6-git-send-email-jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
> rsocket.7 had an errant text substitution that never worked, it is
> a good idea to have the man pages use the correct paths, so let
> us have cmake run them through.
>
> Any man page ending in '.in' will be substituted automatically.
>
> Signed-off-by: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
Acked-by: Sean Hefty <sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
FWIW, I'm in favor of replacing the man pages with markdown and then generating the man pages from that. I volunteer someone else to do that work.
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^ permalink raw reply
* Re: [PATCH 05/13] Have cmake run man pages through text substitution
From: Jason Gunthorpe @ 2016-09-23 21:38 UTC (permalink / raw)
To: Hefty, Sean; +Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
In-Reply-To: <1828884A29C6694DAF28B7E6B8A82373AB08E9D8-P5GAC/sN6hkd3b2yrw5b5LfspsVTdybXVpNB7YpNyf8@public.gmane.org>
On Fri, Sep 23, 2016 at 09:23:42PM +0000, Hefty, Sean wrote:
> > rsocket.7 had an errant text substitution that never worked, it is
> > a good idea to have the man pages use the correct paths, so let
> > us have cmake run them through.
> >
> > Any man page ending in '.in' will be substituted automatically.
> >
> > Signed-off-by: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
>
> Acked-by: Sean Hefty <sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
>
> FWIW, I'm in favor of replacing the man pages with markdown and then
> generating the man pages from that. I volunteer someone else to do
> that work.
I concur, and someone else should do the work ..
We could begin by requiring all new man pages to be in markdown
format. Do you do this in libfabric? What conversion tool do you like?
I've used rst for this in the past with reasonable results..
Jason
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* RE: [PATCH 05/13] Have cmake run man pages through text substitution
From: Hefty, Sean @ 2016-09-23 21:48 UTC (permalink / raw)
To: Jason Gunthorpe; +Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
In-Reply-To: <20160923213819.GC8490-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
> We could begin by requiring all new man pages to be in markdown
> format. Do you do this in libfabric? What conversion tool do you like?
We do this in libfabric. I believe we use Jekyll. Since someone else set that up, I was happy and didn't really care which conversion tool was used. :)
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* RE: [PATCH 05/13] Have cmake run man pages through text substitution
From: Hefty, Sean @ 2016-09-23 21:49 UTC (permalink / raw)
To: Jason Gunthorpe; +Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
In-Reply-To: <20160923213819.GC8490@obsidianresearch.com>
> We do this in libfabric. I believe we use Jekyll. Since someone else
> set that up, I was happy and didn't really care which conversion tool
> was used. :)
Or maybe Jekyll does the html, and pandoc does the nroff...
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* [PATCH] ibacm: move Documentation to Documentation/
From: Christoph Hellwig @ 2016-09-24 0:34 UTC (permalink / raw)
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA
And drop various bits that aren't relevant for our unified tree
(Windows support, build instructions, etc).
Signed-off-by: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
---
Documentation/ibacm.md | 109 ++++++++++++++++++++++++++++++++++++++
ibacm/acm_notes.txt | 141 -------------------------------------------------
2 files changed, 109 insertions(+), 141 deletions(-)
create mode 100644 Documentation/ibacm.md
delete mode 100644 ibacm/acm_notes.txt
diff --git a/Documentation/ibacm.md b/Documentation/ibacm.md
new file mode 100644
index 0000000..8ed293d
--- /dev/null
+++ b/Documentation/ibacm.md
@@ -0,0 +1,109 @@
+# The Assistant for InfiniBand Communication Management (IB ACM)
+
+The IB ACM library implements and provides a framework for name, address, and
+route resolution services over InfiniBand. The IB ACM provides information
+needed to establish a connection, but does not implement the CM protocol.
+
+IB ACM services are used by librdmacm to implement the rdma_resolve_addr,
+rdma_resolve_route, and rdma_getaddrinfo routines.
+
+The IB ACM is focused on being scalable and efficient. The current
+implementation limits network traffic, SA interactions, and centralized
+services. ACM supports multiple resolution protocols in order to handle
+different fabric topologies.
+
+This release is limited in its handling of dynamic changes.
+
+The IB ACM package is comprised of two components: the ibacm service
+and a test/configuration utility - ib_acme.
+
+# Details
+
+### ib_acme
+
+The ib_acme program serves a dual role. It acts as a utility to test
+ibacm operation and help verify if the ibacm service and selected
+protocol is usable for a given cluster configuration. Additionally,
+it automatically generates ibacm configuration files to assist with
+or eliminate manual setup.
+
+
+### acm configuration files
+
+The ibacm service relies on two configuration files.
+
+The acm_addr.cfg file contains name and address mappings for each IB
+<device, port, pkey> endpoint. Although the names in the acm_addr.cfg
+file can be anything, ib_acme maps the host name and IP addresses to
+the IB endpoints.
+
+The acm_opts.cfg file provides a set of configurable options for the
+ibacm service, such as timeout, number of retries, logging level, etc.
+ib_acme generates the acm_opts.cfg file using static information. A
+future enhancement would adjust options based on the current system
+and cluster size.
+
+### ibacm
+
+The ibacm service is responsible for resolving names and addresses to
+InfiniBand path information and caching such data. It is implemented as a
+daemon that execute with administrative privileges.
+
+The ibacm implements a client interface over TCP sockets, which is
+abstracted by the librdmacm library. One or more back-end protocols are
+used by the ibacm service to satisfy user requests. Although the
+ibacm supports standard SA path record queries on the back-end, it
+provides an experimental multicast resolution protocol in hope of
+achieving greater scalability. The latter is not usable on all fabric
+topologies, specifically ones that may not have reversible paths.
+Users should use the ib_acme utility to verify that multicast protocol
+is usable before running other applications.
+
+Conceptually, the ibacm service implements an ARP like protocol and either
+uses IB multicast records to construct path record data or queries the
+SA directly, depending on the selected route protocol. By default, the
+ibacm services uses and caches SA path record queries.
+
+Specifically, all IB endpoints join a number of multicast groups.
+Multicast groups differ based on rates, mtu, sl, etc., and are prioritized.
+All participating endpoints must be able to communicate on the lowest
+priority multicast group. The ibacm assigns one or more names/addresses
+to each IB endpoint using the acm_addr.cfg file. Clients provide source
+and destination names or addresses as input to the service, and receive
+as output path record data.
+
+The service maps a client's source name/address to a local IB endpoint.
+If a client does not provide a source address, then the ibacm service
+will select one based on the destination and local routing tables. If the
+destination name/address is not cached locally, it sends a multicast
+request out on the lowest priority multicast group on the local endpoint.
+The request carries a list of multicast groups that the sender can use.
+The recipient of the request selects the highest priority multicast group
+that it can use as well and returns that information directly to the sender.
+The request data is cached by all endpoints that receive the multicast
+request message. The source endpoint also caches the response and uses
+the multicast group that was selected to construct or obtain path record
+data, which is returned to the client.
+
+The current implementation of the IB ACM has several additional restrictions:
+- The ibacm is limited in its handling of dynamic changes;
+ the ibacm should be stopped and restarted if a cluster is reconfigured.
+- Support for IPv6 has not been verified.
+- The number of addresses that can be assigned to a single endpoint is
+ limited to 4.
+- The number of multicast groups that an endpoint can support is limited to 2.
+
+The ibacm contains several internal caches. These include caches for
+GID and LID destination addresses. These caches can be optionally
+preloaded. ibacm supports the OpenSM dump_pr plugin "full" PathRecord
+format which is used to preload these caches. The file format is specified
+in the ibacm_opts.cfg file via the route_preload setting which should
+be set to opensm_full_v1 for this file format. Default format is
+none which does not preload these caches. See dump_pr.notes.txt in dump_pr
+for more information on the opensm_full_v1 file format and how to configure
+OpenSM to generate this file.
+
+Additionally, the name, IPv4, and IPv6 caches can be be preloaded by using
+the addr_preload option. The default is none which does not preload these
+caches. To preload these caches, set this option to acm_hosts and
+configure the addr_data_file appropriately.
diff --git a/ibacm/acm_notes.txt b/ibacm/acm_notes.txt
deleted file mode 100644
index c975555..0000000
--- a/ibacm/acm_notes.txt
+++ /dev/null
@@ -1,141 +0,0 @@
-Assistant for InfiniBand Communication Management (IB ACM)
-
-Note: The IB ACM should be considered experimental.
-
-
-Overview
---------
-The IB ACM package implements and provides a framework for experimental name,
-address, and route resolution services over InfiniBand. It is intended to
-address connection setup scalability issues running MPI applications on
-large clusters. The IB ACM provides information needed to establish a
-connection, but does not implement the CM protocol.
-
-The librdmacm can invoke IB ACM services when built using the --with-ib_acm
-option. The IB ACM services tie in under the rdma_resolve_addr,
-rdma_resolve_route, and rdma_getaddrinfo routines. For maximum benefit,
-the rdma_getaddrinfo routine should be used, however existing applications
-should still see significant connection scaling benefits using the calls
-available in librdmacm 1.0.11 and previous releases.
-
-The IB ACM is focused on being scalable and efficient. The current
-implementation limits network traffic, SA interactions, and centralized
-services. ACM supports multiple resolution protocols in order to handle
-different fabric topologies.
-
-This release is limited in its handling of dynamic changes.
-
-The IB ACM package is comprised of two components: the ibacm service
-and a test/configuration utility - ib_acme. Both are userspace components
-and are available for Linux and Windows. Additional details are given below.
-
-
-Quick Start Guide
------------------
-1. Prerequisites: libibverbs and libibumad must be installed.
- The IB stack should be running with IPoIB configured.
- These steps assume that the user has administrative privileges.
-2. Install the IB ACM package
- This installs ibacm, and ib_acme.
-3. Run ib_acme -A -O
- This will generate IB ACM address and options configuration files.
- (acm_addr.cfg and acm_opts.cfg)
-4. Run ibacm -D
- This will run ibacm as service/daemon.
- Because ibacm uses the libibumad interfaces, it should be run with
- administrative privileges.
-5. Optionally, run ib_acme -s <source_ip> -d <dest_ip> -v
- This will verify that the ibacm service is running.
-5. Install librdmacm.
- The librdmacm will automatically use the ibacm service.
- On failures, the librdmacm will fall back to normal resolution.
-
-
-Details
--------
-ib_acme:
-The ib_acme program serves a dual role. It acts as a utility to test
-ibacm operation and help verify if the ibacm service and selected
-protocol is usable for a given cluster configuration. Additionally,
-it automatically generates ibacm configuration files to assist with
-or eliminate manual setup.
-
-
-acm configuration files:
-The ibacm service relies on two configuration files.
-
-The acm_addr.cfg file contains name and address mappings for each IB
-<device, port, pkey> endpoint. Although the names in the acm_addr.cfg
-file can be anything, ib_acme maps the host name and IP addresses to
-the IB endpoints.
-
-The acm_opts.cfg file provides a set of configurable options for the
-ibacm service, such as timeout, number of retries, logging level, etc.
-ib_acme generates the acm_opts.cfg file using static information. A
-future enhancement would adjust options based on the current system
-and cluster size.
-
-
-ibacm:
-The ibacm service is responsible for resolving names and addresses to
-InfiniBand path information and caching such data. It is implemented as a
-daemon that execute with administrative privileges.
-
-The ibacm implements a client interface over TCP sockets, which is
-abstracted by the librdmacm library. One or more back-end protocols are
-used by the ibacm service to satisfy user requests. Although the
-ibacm supports standard SA path record queries on the back-end, it
-provides an experimental multicast resolution protocol in hope of
-achieving greater scalability. The latter is not usable on all fabric
-topologies, specifically ones that may not have reversible paths.
-Users should use the ib_acme utility to verify that multicast protocol
-is usable before running other applications.
-
-Conceptually, the ibacm service implements an ARP like protocol and either
-uses IB multicast records to construct path record data or queries the
-SA directly, depending on the selected route protocol. By default, the
-ibacm services uses and caches SA path record queries.
-
-Specifically, all IB endpoints join a number of multicast groups.
-Multicast groups differ based on rates, mtu, sl, etc., and are prioritized.
-All participating endpoints must be able to communicate on the lowest
-priority multicast group. The ibacm assigns one or more names/addresses
-to each IB endpoint using the acm_addr.cfg file. Clients provide source
-and destination names or addresses as input to the service, and receive
-as output path record data.
-
-The service maps a client's source name/address to a local IB endpoint.
-If a client does not provide a source address, then the ibacm service
-will select one based on the destination and local routing tables. If the
-destination name/address is not cached locally, it sends a multicast
-request out on the lowest priority multicast group on the local endpoint.
-The request carries a list of multicast groups that the sender can use.
-The recipient of the request selects the highest priority multicast group
-that it can use as well and returns that information directly to the sender.
-The request data is cached by all endpoints that receive the multicast
-request message. The source endpoint also caches the response and uses
-the multicast group that was selected to construct or obtain path record
-data, which is returned to the client.
-
-The current implementation of the IB ACM has several additional restrictions:
-- The ibacm is limited in its handling of dynamic changes;
- the ibacm should be stopped and restarted if a cluster is reconfigured.
-- Support for IPv6 has not been verified.
-- The number of addresses that can be assigned to a single endpoint is
- limited to 4.
-- The number of multicast groups that an endpoint can support is limited to 2.
-
-The ibacm contains several internal caches. These include caches for
-GID and LID destination addresses. These caches can be optionally
-preloaded. ibacm supports the OpenSM dump_pr plugin "full" PathRecord
-format which is used to preload these caches. The file format is specified
-in the ibacm_opts.cfg file via the route_preload setting which should
-be set to opensm_full_v1 for this file format. Default format is
-none which does not preload these caches. See dump_pr.notes.txt in dump_pr
-for more information on the opensm_full_v1 file format and how to configure
-OpenSM to generate this file.
-
-Additionally, the name, IPv4, and IPv6 caches can be be preloaded by using
-the addr_preload option. The default is none which does not preload these
-caches. To preload these caches, set this option to acm_hosts and
-configure the addr_data_file appropriately.
--
2.1.4
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^ permalink raw reply related
* RE: [PATCH] ibacm: move Documentation to Documentation/
From: Hefty, Sean @ 2016-09-24 1:23 UTC (permalink / raw)
To: Christoph Hellwig,
linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
In-Reply-To: <1474677279-30407-1-git-send-email-hch-jcswGhMUV9g@public.gmane.org>
> And drop various bits that aren't relevant for our unified tree
> (Windows support, build instructions, etc).
>
> Signed-off-by: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
Acked-by: Sean Hefty <sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Thanks!
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^ permalink raw reply
* RE RE
From: Mr.Campbell Neiman @ 2016-09-24 6:04 UTC (permalink / raw)
This message is the last notification about U USD14.5 million bearing our
Name as Beneficiary, all effort to reach you have not be successful,
Please if you Receive this message kindly respond back stating your Desire
to make the claim, Reconfirm your full name and age Mr. Mr.Campbell Neiman
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* Re: [PATCH 13/13] Remove ibsupport-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org from MAINTAINERS
From: Dalessandro, Dennis @ 2016-09-24 13:43 UTC (permalink / raw)
To: jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org,
linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
In-Reply-To: <1474658228-5390-14-git-send-email-jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain; charset="utf-8", Size: 961 bytes --]
On Fri, 2016-09-23 at 13:17 -0600, Jason Gunthorpe wrote:
> Turns out this is not a mailing list.
>
> Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
> ---
> Â MAINTAINERS | 1 -
> Â 1 file changed, 1 deletion(-)
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index b39529feec9b..7a31376056e0 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -69,7 +69,6 @@ F: ibacm/*
> Â IPATH/QIB USERSPACE PROVIDER (for ib_qib.ko)
> Â M: Mike Marciniszyn <mike.marciniszyn@intel.com>
> Â S: Supported
> -L: ibsupport@intel.com
> Â F: libipathverbs/
> Â
> Â IWARP PORT MAPPER DAEMON (for iwarp kernel providers)
This is the right one to use, while you are at it you can tack my name
onto here as well.
https://github.com/01org/opa-libhfi1verbs/commit/377b68888a0b885fc2a44d
df7a2ec33f2fcf217b
N‹§²æìr¸›yúèšØb²X¬¶Ç§vØ^–)Þº{.nÇ+‰·¥Š{±ÙšŠ{ayº\x1dʇڙë,j\a¢f£¢·hš‹»öì\x17/oSc¾™Ú³9˜uÀ¦æå‰È&jw¨®\x03(階ŠÝ¢j"ú\x1a¶^[m§ÿïêäz¹Þ–Šàþf£¢·hšˆ§~ˆmš
^ permalink raw reply
* [PATCH] rdma_rxe: Fix kernel crash when IPV6 disabled.
From: Parav Pandit @ 2016-09-24 15:24 UTC (permalink / raw)
To: monis-VPRAkNaXOzVWk0Htik3J/w, dledford-H+wXaHxf7aLQT0dZR+AlfA,
linux-rdma-u79uwXL29TY76Z2rM5mHXA
Cc: hal.rosenstock-Re5JQEeQqe8AvxtiuMwx3w, Parav Pandit
This patch fixes below kernel crash when CONFIG_IPV6 is disabled by
avoiding ip6 socket initialization.
Additionally it has below minor related cleanup around recv_sockets elements.
1. Avoid extern for structure which is locally used in file
2. Define recv_sockets as static as its used by single file
3. Follow reverse deallocation order than allocation order for
recv_sockets elements
kernel: [ 348.527616] general protection fault: 0000 [#1] SMP
kernel: [ 348.528052] Modules linked in: rdma_rxe(+) udp_tunnel ib_core binfmt_misc dm_mirror dm_region_hash dm_log dm_mod mousedev psmouse sg pcspkr evdev floppy button acpi_cpufreq ext4(E) crc16(E) jbd2(E) mbcache(E) sd_mod(E) ata_piix(E) libata(E) scsi_mod(E)
kernel: [ 348.528052] CPU: 0 PID: 2561 Comm: modprobe Tainted: G E 4.8.0-rc6+ #8
kernel: [ 348.528052] task: ffff880037af1d80 task.stack: ffff88003df50000
kernel: [ 348.528052] RIP: 0010:[<ffffffffa03212bd>] [<ffffffffa03212bd>] setup_udp_tunnel_sock+0xd/0x70 [udp_tunnel]
kernel: [ 348.528052] RSP: 0018:ffff88003df53c38 EFLAGS: 00010202
kernel: [ 348.528052] RAX: 840fc28949c08548 RBX: 0000000000000000 RCX: 00000000685eba97
kernel: [ 348.528052] RDX: ffff88003df53c68 RSI: ffffffff81197185 RDI: ffffffff81acc800
kernel: [ 348.528052] RBP: ffff88003df53c38 R08: 000000000001b1c0 R09: ffffffff812ef300
kernel: [ 348.528052] R10: ffff88003e21b1c0 R11: ffffea0000f36000 R12: ffffffffa033e000
kernel: [ 348.528052] R13: ffffffffa0339c10 R14: ffff88003d17b240 R15: ffffffffa0339bc0
kernel: [ 348.528052] FS: 00007f910f913740(0000) GS:ffff88003e200000(0000) knlGS:0000000000000000
kernel: [ 348.528052] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kernel: [ 348.528052] CR2: 00007f910eac0000 CR3: 0000000037a07000 CR4: 00000000001406f0
kernel: [ 348.528052] Stack:
kernel: [ 348.528052] ffff88003df53ca0 ffffffffa0331fbb ffffffff81197185 0000000a00000000
kernel: [ 348.528052] 0000000000000000 000000080000b712 0000000000000000 ffffffffa0335701
kernel: [ 348.528052] ffffffffa0332320 0000000000000000 ffff88003d17b240 ffffffffa0339bc0
kernel: [ 348.528052] Call Trace:
kernel: [ 348.528052] [<ffffffffa0331fbb>] rxe_setup_udp_tunnel.constprop.14+0x6b/0xc0 [rdma_rxe]
kernel: [ 348.528052] [<ffffffff81197185>] ? kmem_cache_create+0x85/0x1c0
kernel: [ 348.528052] [<ffffffffa0332320>] ? net_to_rxe+0x80/0x80 [rdma_rxe]
kernel: [ 348.528052] [<ffffffffa03326de>] rxe_net_init+0x1e/0xe0 [rdma_rxe]
kernel: [ 348.528052] [<ffffffffa033e027>] rxe_module_init+0x27/0x57 [rdma_rxe]
kernel: [ 348.528052] [<ffffffff8100214d>] do_one_initcall+0x3d/0x160
kernel: [ 348.528052] [<ffffffff811b4145>] ? __vunmap+0x85/0xd0
kernel: [ 348.528052] [<ffffffff811b41fe>] ? vfree+0x2e/0x70
kernel: [ 348.528052] [<ffffffff8116ce63>] do_init_module+0x60/0x1e0
kernel: [ 348.528052] [<ffffffff810ec622>] load_module+0x1dc2/0x2650
kernel: [ 348.528052] [<ffffffff810e9970>] ? __symbol_put+0x40/0x40
kernel: [ 348.528052] [<ffffffff810ecfae>] SYSC_init_module+0xfe/0x110
kernel: [ 348.528052] [<ffffffff810ed07e>] SyS_init_module+0xe/0x10
kernel: [ 348.528052] [<ffffffff81502df2>] entry_SYSCALL_64_fastpath+0x1a/0xa4
kernel: [ 348.528052] Code: ca 0e 10 e1 48 89 df e8 32 22 10 e1 5b 5d c3 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 8b 46 20 55 48 89 e5 <80> a0 d0 02 00 00 ef 80 80 d3 02 00 00 01 48 8b 0a 48 89 88 28
kernel: [ 348.528052] RIP [<ffffffffa03212bd>] setup_udp_tunnel_sock+0xd/0x70 [udp_tunnel]
kernel: [ 348.528052] RSP <ffff88003df53c38>
kernel: [ 348.772092] ---[ end trace 432dfe51deb7b58e ]---
Signed-off-by: Parav Pandit <pandit.parav-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
drivers/infiniband/sw/rxe/rxe_net.c | 20 +++++++++-----------
drivers/infiniband/sw/rxe/rxe_net.h | 2 --
2 files changed, 9 insertions(+), 13 deletions(-)
diff --git a/drivers/infiniband/sw/rxe/rxe_net.c b/drivers/infiniband/sw/rxe/rxe_net.c
index 0b8d2ea..dc9851f 100644
--- a/drivers/infiniband/sw/rxe/rxe_net.c
+++ b/drivers/infiniband/sw/rxe/rxe_net.c
@@ -48,6 +48,8 @@
static LIST_HEAD(rxe_dev_list);
static spinlock_t dev_list_lock; /* spinlock for device list */
+static struct rxe_recv_sockets recv_sockets;
+
struct rxe_dev *net_to_rxe(struct net_device *ndev)
{
struct rxe_dev *rxe;
@@ -81,9 +83,6 @@ struct rxe_dev *get_rxe_by_name(const char* name)
return found;
}
-
-struct rxe_recv_sockets recv_sockets;
-
static __be64 rxe_mac_to_eui64(struct net_device *ndev)
{
unsigned char *mac_addr = ndev->dev_addr;
@@ -277,7 +276,8 @@ static struct socket *rxe_setup_udp_tunnel(struct net *net, __be16 port,
static void rxe_release_udp_tunnel(struct socket *sk)
{
- udp_tunnel_sock_release(sk);
+ if (sk)
+ udp_tunnel_sock_release(sk);
}
static void prepare_udp_hdr(struct sk_buff *skb, __be16 src_port,
@@ -668,6 +668,7 @@ int rxe_net_init(void)
spin_lock_init(&dev_list_lock);
+#if IS_ENABLED(CONFIG_IPV6)
recv_sockets.sk6 = rxe_setup_udp_tunnel(&init_net,
htons(ROCE_V2_UDP_DPORT), true);
if (IS_ERR(recv_sockets.sk6)) {
@@ -675,7 +676,7 @@ int rxe_net_init(void)
pr_err("rxe: Failed to create IPv6 UDP tunnel\n");
return -1;
}
-
+#endif
recv_sockets.sk4 = rxe_setup_udp_tunnel(&init_net,
htons(ROCE_V2_UDP_DPORT), false);
if (IS_ERR(recv_sockets.sk4)) {
@@ -688,8 +689,8 @@ int rxe_net_init(void)
err = register_netdevice_notifier(&rxe_net_notifier);
if (err) {
- rxe_release_udp_tunnel(recv_sockets.sk6);
rxe_release_udp_tunnel(recv_sockets.sk4);
+ rxe_release_udp_tunnel(recv_sockets.sk6);
pr_err("rxe: Failed to rigister netdev notifier\n");
}
@@ -698,11 +699,8 @@ int rxe_net_init(void)
void rxe_net_exit(void)
{
- if (recv_sockets.sk6)
- rxe_release_udp_tunnel(recv_sockets.sk6);
-
- if (recv_sockets.sk4)
- rxe_release_udp_tunnel(recv_sockets.sk4);
+ rxe_release_udp_tunnel(recv_sockets.sk4);
+ rxe_release_udp_tunnel(recv_sockets.sk6);
unregister_netdevice_notifier(&rxe_net_notifier);
}
diff --git a/drivers/infiniband/sw/rxe/rxe_net.h b/drivers/infiniband/sw/rxe/rxe_net.h
index 7b06f76..106c586 100644
--- a/drivers/infiniband/sw/rxe/rxe_net.h
+++ b/drivers/infiniband/sw/rxe/rxe_net.h
@@ -43,8 +43,6 @@ struct rxe_recv_sockets {
struct socket *sk6;
};
-extern struct rxe_recv_sockets recv_sockets;
-
struct rxe_dev *rxe_net_add(struct net_device *ndev);
int rxe_net_init(void);
--
2.7.4
--
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^ permalink raw reply related
* Re: [PATCH 13/13] Remove ibsupport-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org from MAINTAINERS
From: Jason Gunthorpe @ 2016-09-24 16:56 UTC (permalink / raw)
To: Dalessandro, Dennis; +Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
In-Reply-To: <1474724600.6625.1.camel-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
On Sat, Sep 24, 2016 at 01:43:25PM +0000, Dalessandro, Dennis wrote:
> On Fri, 2016-09-23 at 13:17 -0600, Jason Gunthorpe wrote:
> > Turns out this is not a mailing list.
> >
> > Signed-off-by: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
> > ??MAINTAINERS | 1 -
> > ??1 file changed, 1 deletion(-)
> >
> > diff --git a/MAINTAINERS b/MAINTAINERS
> > index b39529feec9b..7a31376056e0 100644
> > +++ b/MAINTAINERS
> > @@ -69,7 +69,6 @@ F: ibacm/*
> > ??IPATH/QIB USERSPACE PROVIDER (for ib_qib.ko)
> > ??M: Mike Marciniszyn <mike.marciniszyn-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
> > ??S: Supported
> > -L: ibsupport-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org
> > ??F: libipathverbs/
> > ??
> > ??IWARP PORT MAPPER DAEMON (for iwarp kernel providers)
>
> This is the right one to use, while you are at it you can tack my name
> onto here as well.
>
> https://github.com/01org/opa-libhfi1verbs/commit/377b68888a0b885fc2a44ddf7a2ec33f2fcf217b
intel-opa is the address you want for for QIB too? It is already in the
HFI stanza
Jason
--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
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^ permalink raw reply
* Re: [PATCH 13/13] Remove ibsupport-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org from MAINTAINERS
From: Dalessandro, Dennis @ 2016-09-24 19:18 UTC (permalink / raw)
To: jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org
Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
In-Reply-To: <20160924165645.GA16206-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
On Sat, 2016-09-24 at 10:56 -0600, Jason Gunthorpe wrote:
> On Sat, Sep 24, 2016 at 01:43:25PM +0000, Dalessandro, Dennis wrote:
> > On Fri, 2016-09-23 at 13:17 -0600, Jason Gunthorpe wrote:
> > > Turns out this is not a mailing list.
> > >
> > > Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
> > > ??MAINTAINERS | 1 -
> > > ??1 file changed, 1 deletion(-)
> > >
> > > diff --git a/MAINTAINERS b/MAINTAINERS
> > > index b39529feec9b..7a31376056e0 100644
> > > +++ b/MAINTAINERS
> > > @@ -69,7 +69,6 @@ F: ibacm/*
> > > ??IPATH/QIB USERSPACE PROVIDER (for ib_qib.ko)
> > > ??M: Mike Marciniszyn <mike.marciniszyn@intel.com>
> > > ??S: Supported
> > > -L: ibsupport@intel.com
> > > ??F: libipathverbs/
> > > ??
> > > ??IWARP PORT MAPPER DAEMON (for iwarp kernel providers)
> >
> > This is the right one to use, while you are at it you can tack my
> > name
> > onto here as well.
> >
> > https://github.com/01org/opa-libhfi1verbs/commit/377b68888a0b885fc2
> > a44ddf7a2ec33f2fcf217b
>
> intel-opa is the address you want for for QIB too? It is already in
> the
> HFI stanza
Actually on second thought, maybe better to use:
infinipath <infinipath@intel.com>
-Denny
> Jason
> --
> To unsubscribe from this list: send the line "unsubscribe linux-rdma"
> in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
^ permalink raw reply
* [PATCH v5 00/16] Add Paravirtual RDMA Driver
From: Adit Ranadive @ 2016-09-24 23:21 UTC (permalink / raw)
To: dledford, linux-rdma, pv-drivers
Cc: Adit Ranadive, netdev, linux-pci, jhansen, asarwade, georgezhang,
bryantan
Hi Doug, others,
This patch series adds a driver for a paravirtual RDMA device. The device
is developed for VMware's Virtual Machines and allows existing RDMA
applications to continue to use existing Verbs API when deployed in VMs on
ESXi. We recently did a presentation in the OFA Workshop [1] regarding this
device.
Description and RDMA Support
============================
The virtual device is exposed as a dual function PCIe device. One part is
a virtual network device (VMXNet3) which provides networking properties
like MAC, IP addresses to the RDMA part of the device. The networking
properties are used to register GIDs required by RDMA applications to
communicate.
These patches add support and the all required infrastructure for letting
applications use such a device. We support the mandatory Verbs API as well
as the base memory management extensions (Local Inv, Send with Inv and Fast
Register Work Requests). We currently support both Reliable Connected and
Unreliable Datagram QPs but do not support Shared Receive Queues (SRQs).
Also, we support the following types of Work Requests:
o Send/Receive (with or without Immediate Data)
o RDMA Write (with or without Immediate Data)
o RDMA Read
o Local Invalidate
o Send with Invalidate
o Fast Register Work Requests
This version only adds support for version 1 of RoCE. We will add RoCEv2
support in a future patch. We do support registration of both MAC-based and
IP-based GIDs. I have also created a git tree for our user-level driver [2].
Testing
=======
We have tested this internally for various types of Guest OS - Red Hat,
Centos, Ubuntu 12.04/14.04/16.04, Oracle Enterprise Linux, SLES 12
using backported versions of this driver. The tests included several runs
of the performance tests (included with OFED), Intel MPI PingPong benchmark
on OpenMPI, krping for FRWRs. Mellanox has been kind enough to test the
backported version of the driver internally on their hardware using a
VMware provided ESX build. I have also applied and tested this with Doug's
k.o/for-4.9 branch (commit 64278fe). Note, that this patch series should be
applied all together. I split out the commits so that it may be easier to
review.
PVRDMA Resources
================
[1] OFA Workshop Presentation -
https://openfabrics.org/images/eventpresos/2016presentations/102parardma.pdf
[2] Libpvrdma User-level library -
http://git.openfabrics.org/?p=~aditr/libpvrdma.git;a=summary
---
Changes v4->v5:
- PATCH [02/16]
- Moved pvrdma_uapi.h and pvrdma_user.h into common UAPI folder.
- Renamed to pvrdma-uapi.h and pvrdma-abi.h respectively.
- Prefixed unsigned vars with __.
- PATCH [03/16]
- Removed __ prefix for unsigned vars.
- PATCH [04/16]
- Update include for headers moved to UAPI.
- Removed __ prefix for unsigned vars.
- PATCH [05/16]
- Update include for headers in UAPI folder.
- Removed setting any properties that are reported by device as 0.
- Simplified modify_port.
- PD should be allocated first in kernel then in device.
- Update to pvrdma_cmd_post for creating/destroying PD, Query port/device.
- PATCH [06/16]
- pvrdma_cmd_post takes the response code.
- PATCH [07/16]
- Correct var type passed to dma_alloc_coherent.
- PATCH [08/16]
- Moved the timeout to pvrdma_cmd_recv.
- Added additional response code parameter to pvrdma_cmd_post.
- PATCH [09/16]
- Updated include for headers in UAPI folder.
- Changed from EINVAL to ENOMEM if atomic add fails.
- Added error code if destroy cq command failed.
- Update to pvrdma_cmd_post for creating/destroying CQ.
- PATCH [11/16]
- Check the access flags correctly for DMA MR.
- Update to pvrdma_cmd_post for creating/destroying MRs.
- PATCH [12/16]
- Updated include for headers in UAPI folder.
- Update to pvrdma_cmd_post for creating/destroying/querying/modifying QPs.
- Use the pvrdma_sge struct when posting WRs/allocating QP memory.
- Removed two set but unused variables.
- PATCH [13/16]
- Removed two unnecessary lines.
- Updated include for headers in UAPI folder.
- Update to pvrdma_cmd_post for add/delete GIDs.
- Add error code in dev_warn if pvrdma_cmd_post failed.
- PATCH [16/16]
- Added pvrdma files to common UAPI folder.
Changes v3->v4:
- Rebased on for-4.9 branch - commit 64278fe89b729
("Merge branch 'hns-roce' into k.o/for-4.9")
- PATCH [01/16]
- New in v4 - Moved vmxnet3 id to pci_ids.h
- PATCH [02,03/16]
- pvrdma_sge was moved into pvrdma_uapi.h
- PATCH [04/16]
- Removed explicit enum values.
- PATCH [05/16]
- Renamed priviledged -> privileged.
- Added error numbers for command errors.
- Removed unnecessary goto in modify_device.
- Moved pd allocation to after command execution.
- Removed an incorrect atomic_dec.
- PATCH [06/16]
- Renamed priviledged -> privileged.
- Renamed pvrdma_flush_cqe to _pvrdma_flush_cqe since we hold a lock
to call it.
- Added wrapper functions for writing to UARs for CQ/QP.
- The conversion functions are updated as func_name(dst, src) format.
- Renamed max_gs to max_sg.
- Added work struct for net device events.
- PATCH [07/16]
- Updated conversion functions to func_name(dst, src) format.
- Removed unneeded local variables.
- PATCH [08/16]
- Removed the min check and added a BUILD_BUG_ON check for size.
- PATCH [09/16]
- Added a pvrdma_destroy_cq in the error path.
- Renamed pvrdma_flush_cqe to _pvrdma_flush_cqe since we need a lock to
be held while calling this.
- Updated to use wrapper for UAR write for CQ.
- Ensure that poll_cq does not return error values.
- PATCH [10/16]
- Removed an unnecessary comment.
- PATCH [11/16]
- Changed access flag check for DMA MR to using bit operation.
- Removed some local variables.
- PATCH [12/16]
- Removed an unnecessary switch case.
- Unified the returns in pvrdma_create_qp to use one exit point.
- Renamed pvrdma_flush_cqe to _pvrdma_flush_cqe since we need a lock to
be held when calling this.
- Updated to use wrapper for UAR write for QP.
- Updated conversion function to func_name(dst, src) format.
- Renamed max_gs to max_sg.
- Renamed cap variable to req_cap in pvrdma_set_sq/rq_size.
- Changed dev_warn to dev_warn_ratelimited in pvrdma_post_send/recv.
- Added nesting locking for flushing CQs when destroying/resetting a QP.
- Added missing ret value.
- PATCH [13/16]
- Fixed some checkpatch warnings.
- Added support for new get_dev_fw_str API.
- Added event workqueue for netdevice events.
- Restructured the pvrdma_pci_remove function a little bit.
- PATCH [14/16]
- Enforced dependency on VMXNet3 module.
Changes v2->v3:
- I reordered the patches so that the definitions of enums, structures is
before their use (suggested by Yuval Shaia) so its easier to review.
- Removed an unneccesary bool in pvrdma_cmd_post (suggested by Yuval Shaia).
- Made the use of comma at end of enums consistent across files (suggested
by Leon Romanovsky).
Changes v1->v2:
- Patch [07/15] - Addressed Yuval Shaia's comments and 32-bit build errors.
---
Adit Ranadive (16):
vmxnet3: Move PCI Id to pci_ids.h
IB/pvrdma: Add user-level shared functions
IB/pvrdma: Add virtual device RDMA structures
IB/pvrdma: Add the paravirtual RDMA device specification
IB/pvrdma: Add functions for Verbs support
IB/pvrdma: Add paravirtual rdma device
IB/pvrdma: Add helper functions
IB/pvrdma: Add device command support
IB/pvrdma: Add support for Completion Queues
IB/pvrdma: Add UAR support
IB/pvrdma: Add support for memory regions
IB/pvrdma: Add Queue Pair support
IB/pvrdma: Add the main driver module for PVRDMA
IB/pvrdma: Add Kconfig and Makefile
IB: Add PVRDMA driver
MAINTAINERS: Update for PVRDMA driver
MAINTAINERS | 9 +
drivers/infiniband/Kconfig | 1 +
drivers/infiniband/hw/Makefile | 1 +
drivers/infiniband/hw/pvrdma/Kconfig | 7 +
drivers/infiniband/hw/pvrdma/Makefile | 3 +
drivers/infiniband/hw/pvrdma/pvrdma.h | 473 +++++++++
drivers/infiniband/hw/pvrdma/pvrdma_cmd.c | 117 +++
drivers/infiniband/hw/pvrdma/pvrdma_cq.c | 426 +++++++++
drivers/infiniband/hw/pvrdma/pvrdma_defs.h | 301 ++++++
drivers/infiniband/hw/pvrdma/pvrdma_dev_api.h | 342 +++++++
drivers/infiniband/hw/pvrdma/pvrdma_doorbell.c | 127 +++
drivers/infiniband/hw/pvrdma/pvrdma_ib_verbs.h | 444 +++++++++
drivers/infiniband/hw/pvrdma/pvrdma_main.c | 1220 ++++++++++++++++++++++++
drivers/infiniband/hw/pvrdma/pvrdma_misc.c | 304 ++++++
drivers/infiniband/hw/pvrdma/pvrdma_mr.c | 334 +++++++
drivers/infiniband/hw/pvrdma/pvrdma_qp.c | 973 +++++++++++++++++++
drivers/infiniband/hw/pvrdma/pvrdma_verbs.c | 577 +++++++++++
drivers/infiniband/hw/pvrdma/pvrdma_verbs.h | 108 +++
drivers/net/vmxnet3/vmxnet3_int.h | 3 +-
include/linux/pci_ids.h | 1 +
include/uapi/rdma/Kbuild | 2 +
include/uapi/rdma/pvrdma-abi.h | 99 ++
include/uapi/rdma/pvrdma-uapi.h | 255 +++++
23 files changed, 6125 insertions(+), 2 deletions(-)
create mode 100644 drivers/infiniband/hw/pvrdma/Kconfig
create mode 100644 drivers/infiniband/hw/pvrdma/Makefile
create mode 100644 drivers/infiniband/hw/pvrdma/pvrdma.h
create mode 100644 drivers/infiniband/hw/pvrdma/pvrdma_cmd.c
create mode 100644 drivers/infiniband/hw/pvrdma/pvrdma_cq.c
create mode 100644 drivers/infiniband/hw/pvrdma/pvrdma_defs.h
create mode 100644 drivers/infiniband/hw/pvrdma/pvrdma_dev_api.h
create mode 100644 drivers/infiniband/hw/pvrdma/pvrdma_doorbell.c
create mode 100644 drivers/infiniband/hw/pvrdma/pvrdma_ib_verbs.h
create mode 100644 drivers/infiniband/hw/pvrdma/pvrdma_main.c
create mode 100644 drivers/infiniband/hw/pvrdma/pvrdma_misc.c
create mode 100644 drivers/infiniband/hw/pvrdma/pvrdma_mr.c
create mode 100644 drivers/infiniband/hw/pvrdma/pvrdma_qp.c
create mode 100644 drivers/infiniband/hw/pvrdma/pvrdma_verbs.c
create mode 100644 drivers/infiniband/hw/pvrdma/pvrdma_verbs.h
create mode 100644 include/uapi/rdma/pvrdma-abi.h
create mode 100644 include/uapi/rdma/pvrdma-uapi.h
--
2.7.4
^ permalink raw reply
* [PATCH v5 01/16] vmxnet3: Move PCI Id to pci_ids.h
From: Adit Ranadive @ 2016-09-24 23:21 UTC (permalink / raw)
To: dledford-H+wXaHxf7aLQT0dZR+AlfA,
linux-rdma-u79uwXL29TY76Z2rM5mHXA,
pv-drivers-pghWNbHTmq7QT0dZR+AlfA
Cc: Adit Ranadive, netdev-u79uwXL29TY76Z2rM5mHXA,
linux-pci-u79uwXL29TY76Z2rM5mHXA, jhansen-pghWNbHTmq7QT0dZR+AlfA,
asarwade-pghWNbHTmq7QT0dZR+AlfA,
georgezhang-pghWNbHTmq7QT0dZR+AlfA,
bryantan-pghWNbHTmq7QT0dZR+AlfA
In-Reply-To: <cover.1474759181.git.aditr-pghWNbHTmq7QT0dZR+AlfA@public.gmane.org>
The VMXNet3 PCI Id will be shared with our paravirtual RDMA driver.
Moved it to the shared location in pci_ids.h.
Suggested-by: Leon Romanovsky <leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Acked-by: Bjorn Helgaas <bhelgaas-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
Reviewed-by: Yuval Shaia <yuval.shaia-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
Signed-off-by: Adit Ranadive <aditr-pghWNbHTmq7QT0dZR+AlfA@public.gmane.org>
---
drivers/net/vmxnet3/vmxnet3_int.h | 3 +--
include/linux/pci_ids.h | 1 +
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/vmxnet3/vmxnet3_int.h b/drivers/net/vmxnet3/vmxnet3_int.h
index 74fc030..2bd6bf8 100644
--- a/drivers/net/vmxnet3/vmxnet3_int.h
+++ b/drivers/net/vmxnet3/vmxnet3_int.h
@@ -119,9 +119,8 @@ enum {
};
/*
- * PCI vendor and device IDs.
+ * Maximum devices supported.
*/
-#define PCI_DEVICE_ID_VMWARE_VMXNET3 0x07B0
#define MAX_ETHERNET_CARDS 10
#define MAX_PCI_PASSTHRU_DEVICE 6
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index c58752f..98bb455 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -2251,6 +2251,7 @@
#define PCI_DEVICE_ID_RASTEL_2PORT 0x2000
#define PCI_VENDOR_ID_VMWARE 0x15ad
+#define PCI_DEVICE_ID_VMWARE_VMXNET3 0x07b0
#define PCI_VENDOR_ID_ZOLTRIX 0x15b0
#define PCI_DEVICE_ID_ZOLTRIX_2BD0 0x2bd0
--
2.7.4
--
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^ permalink raw reply related
* [PATCH v5 02/16] IB/pvrdma: Add user-level shared functions
From: Adit Ranadive @ 2016-09-24 23:21 UTC (permalink / raw)
To: dledford, linux-rdma, pv-drivers
Cc: Adit Ranadive, netdev, linux-pci, jhansen, asarwade, georgezhang,
bryantan
In-Reply-To: <cover.1474759181.git.aditr@vmware.com>
We share some common structures with the user-level driver. This patch adds
those structures and shared functions to traverse the QP/CQ rings.
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Jorgen Hansen <jhansen@vmware.com>
Reviewed-by: George Zhang <georgezhang@vmware.com>
Reviewed-by: Aditya Sarwade <asarwade@vmware.com>
Reviewed-by: Bryan Tan <bryantan@vmware.com>
Signed-off-by: Adit Ranadive <aditr@vmware.com>
---
Changes v4->v5:
- Moved pvrdma_uapi.h and pvrdma_user.h into common UAPI folder.
- Renamed to pvrdma-uapi.h and pvrdma-abi.h respectively.
- Prefixed unsigned vars with __.
Changes v3->v4:
- Moved pvrdma_sge into pvrdma_uapi.h
---
include/uapi/rdma/Kbuild | 2 +
include/uapi/rdma/pvrdma-abi.h | 99 ++++++++++++++++
include/uapi/rdma/pvrdma-uapi.h | 255 ++++++++++++++++++++++++++++++++++++++++
3 files changed, 356 insertions(+)
create mode 100644 include/uapi/rdma/pvrdma-abi.h
create mode 100644 include/uapi/rdma/pvrdma-uapi.h
diff --git a/include/uapi/rdma/Kbuild b/include/uapi/rdma/Kbuild
index 4edb0f2..fc2b285 100644
--- a/include/uapi/rdma/Kbuild
+++ b/include/uapi/rdma/Kbuild
@@ -7,3 +7,5 @@ header-y += rdma_netlink.h
header-y += rdma_user_cm.h
header-y += hfi/
header-y += rdma_user_rxe.h
+header-y += pvrdma-abi.h
+header-y += pvrdma-uapi.h
diff --git a/include/uapi/rdma/pvrdma-abi.h b/include/uapi/rdma/pvrdma-abi.h
new file mode 100644
index 0000000..6fa0ab6
--- /dev/null
+++ b/include/uapi/rdma/pvrdma-abi.h
@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2012-2016 VMware, Inc. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of EITHER the GNU General Public License
+ * version 2 as published by the Free Software Foundation or the BSD
+ * 2-Clause License. This program is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License version 2 for more details at
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program available in the file COPYING in the main
+ * directory of this source tree.
+ *
+ * The BSD 2-Clause License
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __PVRDMA_USER_H__
+#define __PVRDMA_USER_H__
+
+#include <linux/types.h>
+
+#define PVRDMA_UVERBS_ABI_VERSION 3
+#define PVRDMA_BOARD_ID 1
+#define PVRDMA_REV_ID 1
+
+struct pvrdma_alloc_ucontext_resp {
+ __u32 qp_tab_size;
+ __u32 reserved;
+};
+
+struct pvrdma_alloc_pd_resp {
+ __u32 pdn;
+ __u32 reserved;
+};
+
+struct pvrdma_create_cq {
+ __u64 buf_addr;
+ __u32 buf_size;
+ __u32 reserved;
+};
+
+struct pvrdma_create_cq_resp {
+ __u32 cqn;
+ __u32 reserved;
+};
+
+struct pvrdma_resize_cq {
+ __u64 buf_addr;
+ __u32 buf_size;
+ __u32 reserved;
+};
+
+struct pvrdma_create_srq {
+ __u64 buf_addr;
+};
+
+struct pvrdma_create_srq_resp {
+ __u32 srqn;
+ __u32 reserved;
+};
+
+struct pvrdma_create_qp {
+ __u64 rbuf_addr;
+ __u64 sbuf_addr;
+ __u32 rbuf_size;
+ __u32 sbuf_size;
+ __u64 qp_addr;
+};
+
+#endif /* __PVRDMA_USER_H__ */
diff --git a/include/uapi/rdma/pvrdma-uapi.h b/include/uapi/rdma/pvrdma-uapi.h
new file mode 100644
index 0000000..430d8a5
--- /dev/null
+++ b/include/uapi/rdma/pvrdma-uapi.h
@@ -0,0 +1,255 @@
+/*
+ * Copyright (c) 2012-2016 VMware, Inc. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of EITHER the GNU General Public License
+ * version 2 as published by the Free Software Foundation or the BSD
+ * 2-Clause License. This program is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License version 2 for more details at
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program available in the file COPYING in the main
+ * directory of this source tree.
+ *
+ * The BSD 2-Clause License
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __PVRDMA_UAPI_H__
+#define __PVRDMA_UAPI_H__
+
+#include <linux/types.h>
+
+#define PVRDMA_VERSION 17
+
+#define PVRDMA_UAR_HANDLE_MASK 0x00FFFFFF /* Bottom 24 bits. */
+#define PVRDMA_UAR_QP_OFFSET 0 /* Offset of QP doorbell. */
+#define PVRDMA_UAR_QP_SEND BIT(30) /* Send bit. */
+#define PVRDMA_UAR_QP_RECV BIT(31) /* Recv bit. */
+#define PVRDMA_UAR_CQ_OFFSET 4 /* Offset of CQ doorbell. */
+#define PVRDMA_UAR_CQ_ARM_SOL BIT(29) /* Arm solicited bit. */
+#define PVRDMA_UAR_CQ_ARM BIT(30) /* Arm bit. */
+#define PVRDMA_UAR_CQ_POLL BIT(31) /* Poll bit. */
+#define PVRDMA_INVALID_IDX -1 /* Invalid index. */
+
+/* PVRDMA atomic compare and swap */
+struct pvrdma_exp_cmp_swap {
+ __u64 swap_val;
+ __u64 compare_val;
+ __u64 swap_mask;
+ __u64 compare_mask;
+};
+
+/* PVRDMA atomic fetch and add */
+struct pvrdma_exp_fetch_add {
+ __u64 add_val;
+ __u64 field_boundary;
+};
+
+/* PVRDMA address vector. */
+struct pvrdma_av {
+ __u32 port_pd;
+ __u32 sl_tclass_flowlabel;
+ __u8 dgid[16];
+ __u8 src_path_bits;
+ __u8 gid_index;
+ __u8 stat_rate;
+ __u8 hop_limit;
+ __u8 dmac[6];
+ __u8 reserved[6];
+};
+
+/* PVRDMA scatter/gather entry */
+struct pvrdma_sge {
+ __u64 addr;
+ __u32 length;
+ __u32 lkey;
+};
+
+/* PVRDMA receive queue work request */
+struct pvrdma_rq_wqe_hdr {
+ __u64 wr_id; /* wr id */
+ __u32 num_sge; /* size of s/g array */
+ __u32 total_len; /* reserved */
+};
+/* Use pvrdma_sge (ib_sge) for receive queue s/g array elements. */
+
+/* PVRDMA send queue work request */
+struct pvrdma_sq_wqe_hdr {
+ __u64 wr_id; /* wr id */
+ __u32 num_sge; /* size of s/g array */
+ __u32 total_len; /* reserved */
+ __u32 opcode; /* operation type */
+ __u32 send_flags; /* wr flags */
+ union {
+ __u32 imm_data;
+ __u32 invalidate_rkey;
+ } ex;
+ __u32 reserved;
+ union {
+ struct {
+ __u64 remote_addr;
+ __u32 rkey;
+ __u8 reserved[4];
+ } rdma;
+ struct {
+ __u64 remote_addr;
+ __u64 compare_add;
+ __u64 swap;
+ __u32 rkey;
+ __u32 reserved;
+ } atomic;
+ struct {
+ __u64 remote_addr;
+ __u32 log_arg_sz;
+ __u32 rkey;
+ union {
+ struct pvrdma_exp_cmp_swap cmp_swap;
+ struct pvrdma_exp_fetch_add fetch_add;
+ } wr_data;
+ } masked_atomics;
+ struct {
+ __u64 iova_start;
+ __u64 pl_pdir_dma;
+ __u32 page_shift;
+ __u32 page_list_len;
+ __u32 length;
+ __u32 access_flags;
+ __u32 rkey;
+ } fast_reg;
+ struct {
+ __u32 remote_qpn;
+ __u32 remote_qkey;
+ struct pvrdma_av av;
+ } ud;
+ } wr;
+};
+/* Use pvrdma_sge (ib_sge) for send queue s/g array elements. */
+
+/* Completion queue element. */
+struct pvrdma_cqe {
+ __u64 wr_id;
+ __u64 qp;
+ __u32 opcode;
+ __u32 status;
+ __u32 byte_len;
+ __u32 imm_data;
+ __u32 src_qp;
+ __u32 wc_flags;
+ __u32 vendor_err;
+ __u16 pkey_index;
+ __u16 slid;
+ __u8 sl;
+ __u8 dlid_path_bits;
+ __u8 port_num;
+ __u8 smac[6];
+ __u8 reserved2[7]; /* Pad to next power of 2 (64). */
+};
+
+struct pvrdma_ring {
+ atomic_t prod_tail; /* Producer tail. */
+ atomic_t cons_head; /* Consumer head. */
+};
+
+struct pvrdma_ring_state {
+ struct pvrdma_ring tx; /* Tx ring. */
+ struct pvrdma_ring rx; /* Rx ring. */
+};
+
+static inline int pvrdma_idx_valid(__u32 idx, __u32 max_elems)
+{
+ /* Generates fewer instructions than a less-than. */
+ return (idx & ~((max_elems << 1) - 1)) == 0;
+}
+
+static inline __s32 pvrdma_idx(atomic_t *var, __u32 max_elems)
+{
+ const unsigned int idx = atomic_read(var);
+
+ if (pvrdma_idx_valid(idx, max_elems))
+ return idx & (max_elems - 1);
+ return PVRDMA_INVALID_IDX;
+}
+
+static inline void pvrdma_idx_ring_inc(atomic_t *var, __u32 max_elems)
+{
+ __u32 idx = atomic_read(var) + 1; /* Increment. */
+
+ idx &= (max_elems << 1) - 1; /* Modulo size, flip gen. */
+ atomic_set(var, idx);
+}
+
+static inline __s32 pvrdma_idx_ring_has_space(const struct pvrdma_ring *r,
+ __u32 max_elems, __u32 *out_tail)
+{
+ const __u32 tail = atomic_read(&r->prod_tail);
+ const __u32 head = atomic_read(&r->cons_head);
+
+ if (pvrdma_idx_valid(tail, max_elems) &&
+ pvrdma_idx_valid(head, max_elems)) {
+ *out_tail = tail & (max_elems - 1);
+ return tail != (head ^ max_elems);
+ }
+ return PVRDMA_INVALID_IDX;
+}
+
+static inline __s32 pvrdma_idx_ring_has_data(const struct pvrdma_ring *r,
+ __u32 max_elems, __u32 *out_head)
+{
+ const __u32 tail = atomic_read(&r->prod_tail);
+ const __u32 head = atomic_read(&r->cons_head);
+
+ if (pvrdma_idx_valid(tail, max_elems) &&
+ pvrdma_idx_valid(head, max_elems)) {
+ *out_head = head & (max_elems - 1);
+ return tail != head;
+ }
+ return PVRDMA_INVALID_IDX;
+}
+
+static inline bool pvrdma_idx_ring_is_valid_idx(const struct pvrdma_ring *r,
+ __u32 max_elems, __u32 *idx)
+{
+ const __u32 tail = atomic_read(&r->prod_tail);
+ const __u32 head = atomic_read(&r->cons_head);
+
+ if (pvrdma_idx_valid(tail, max_elems) &&
+ pvrdma_idx_valid(head, max_elems) &&
+ pvrdma_idx_valid(*idx, max_elems)) {
+ if (tail > head && (*idx < tail && *idx >= head))
+ return true;
+ else if (head > tail && (*idx >= head || *idx < tail))
+ return true;
+ }
+ return false;
+}
+
+#endif /* __PVRDMA_UAPI_H__ */
--
2.7.4
^ permalink raw reply related
* [PATCH v5 03/16] IB/pvrdma: Add virtual device RDMA structures
From: Adit Ranadive @ 2016-09-24 23:21 UTC (permalink / raw)
To: dledford, linux-rdma, pv-drivers
Cc: Adit Ranadive, netdev, linux-pci, jhansen, asarwade, georgezhang,
bryantan
In-Reply-To: <cover.1474759181.git.aditr@vmware.com>
This patch adds the various Verbs structures that we support in the
virtual RDMA device. We have re-mapped the ones from the RDMA core stack
to make sure we can maintain compatibility with our backend.
Reviewed-by: Jorgen Hansen <jhansen@vmware.com>
Reviewed-by: George Zhang <georgezhang@vmware.com>
Reviewed-by: Aditya Sarwade <asarwade@vmware.com>
Reviewed-by: Bryan Tan <bryantan@vmware.com>
Signed-off-by: Adit Ranadive <aditr@vmware.com>
---
Changes v4->v5:
- Removed __ prefix for unsigned vars.
Changes v3->v4:
- Moved the pvrdma_sge struct to pvrdma_uapi.h.
---
drivers/infiniband/hw/pvrdma/pvrdma_ib_verbs.h | 444 +++++++++++++++++++++++++
1 file changed, 444 insertions(+)
create mode 100644 drivers/infiniband/hw/pvrdma/pvrdma_ib_verbs.h
diff --git a/drivers/infiniband/hw/pvrdma/pvrdma_ib_verbs.h b/drivers/infiniband/hw/pvrdma/pvrdma_ib_verbs.h
new file mode 100644
index 0000000..290b6d8
--- /dev/null
+++ b/drivers/infiniband/hw/pvrdma/pvrdma_ib_verbs.h
@@ -0,0 +1,444 @@
+/*
+ * [PLEASE NOTE: VMWARE, INC. ELECTS TO USE AND DISTRIBUTE THIS COMPONENT
+ * UNDER THE TERMS OF THE OpenIB.org BSD license. THE ORIGINAL LICENSE TERMS
+ * ARE REPRODUCED BELOW ONLY AS A REFERENCE.]
+ *
+ * Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2004 Infinicon Corporation. All rights reserved.
+ * Copyright (c) 2004 Intel Corporation. All rights reserved.
+ * Copyright (c) 2004 Topspin Corporation. All rights reserved.
+ * Copyright (c) 2004 Voltaire Corporation. All rights reserved.
+ * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
+ * Copyright (c) 2005, 2006, 2007 Cisco Systems. All rights reserved.
+ * Copyright (c) 2015-2016 VMware, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef __PVRDMA_IB_VERBS_H__
+#define __PVRDMA_IB_VERBS_H__
+
+#include <linux/types.h>
+
+union pvrdma_gid {
+ u8 raw[16];
+ struct {
+ __be64 subnet_prefix;
+ __be64 interface_id;
+ } global;
+};
+
+enum pvrdma_link_layer {
+ PVRDMA_LINK_LAYER_UNSPECIFIED,
+ PVRDMA_LINK_LAYER_INFINIBAND,
+ PVRDMA_LINK_LAYER_ETHERNET,
+};
+
+enum pvrdma_mtu {
+ PVRDMA_MTU_256 = 1,
+ PVRDMA_MTU_512 = 2,
+ PVRDMA_MTU_1024 = 3,
+ PVRDMA_MTU_2048 = 4,
+ PVRDMA_MTU_4096 = 5,
+};
+
+static inline int pvrdma_mtu_enum_to_int(enum pvrdma_mtu mtu)
+{
+ switch (mtu) {
+ case PVRDMA_MTU_256: return 256;
+ case PVRDMA_MTU_512: return 512;
+ case PVRDMA_MTU_1024: return 1024;
+ case PVRDMA_MTU_2048: return 2048;
+ case PVRDMA_MTU_4096: return 4096;
+ default: return -1;
+ }
+}
+
+static inline enum pvrdma_mtu pvrdma_mtu_int_to_enum(int mtu)
+{
+ switch (mtu) {
+ case 256: return PVRDMA_MTU_256;
+ case 512: return PVRDMA_MTU_512;
+ case 1024: return PVRDMA_MTU_1024;
+ case 2048: return PVRDMA_MTU_2048;
+ case 4096:
+ default: return PVRDMA_MTU_4096;
+ }
+}
+
+enum pvrdma_port_state {
+ PVRDMA_PORT_NOP = 0,
+ PVRDMA_PORT_DOWN = 1,
+ PVRDMA_PORT_INIT = 2,
+ PVRDMA_PORT_ARMED = 3,
+ PVRDMA_PORT_ACTIVE = 4,
+ PVRDMA_PORT_ACTIVE_DEFER = 5,
+};
+
+enum pvrdma_port_cap_flags {
+ PVRDMA_PORT_SM = 1 << 1,
+ PVRDMA_PORT_NOTICE_SUP = 1 << 2,
+ PVRDMA_PORT_TRAP_SUP = 1 << 3,
+ PVRDMA_PORT_OPT_IPD_SUP = 1 << 4,
+ PVRDMA_PORT_AUTO_MIGR_SUP = 1 << 5,
+ PVRDMA_PORT_SL_MAP_SUP = 1 << 6,
+ PVRDMA_PORT_MKEY_NVRAM = 1 << 7,
+ PVRDMA_PORT_PKEY_NVRAM = 1 << 8,
+ PVRDMA_PORT_LED_INFO_SUP = 1 << 9,
+ PVRDMA_PORT_SM_DISABLED = 1 << 10,
+ PVRDMA_PORT_SYS_IMAGE_GUID_SUP = 1 << 11,
+ PVRDMA_PORT_PKEY_SW_EXT_PORT_TRAP_SUP = 1 << 12,
+ PVRDMA_PORT_EXTENDED_SPEEDS_SUP = 1 << 14,
+ PVRDMA_PORT_CM_SUP = 1 << 16,
+ PVRDMA_PORT_SNMP_TUNNEL_SUP = 1 << 17,
+ PVRDMA_PORT_REINIT_SUP = 1 << 18,
+ PVRDMA_PORT_DEVICE_MGMT_SUP = 1 << 19,
+ PVRDMA_PORT_VENDOR_CLASS_SUP = 1 << 20,
+ PVRDMA_PORT_DR_NOTICE_SUP = 1 << 21,
+ PVRDMA_PORT_CAP_MASK_NOTICE_SUP = 1 << 22,
+ PVRDMA_PORT_BOOT_MGMT_SUP = 1 << 23,
+ PVRDMA_PORT_LINK_LATENCY_SUP = 1 << 24,
+ PVRDMA_PORT_CLIENT_REG_SUP = 1 << 25,
+ PVRDMA_PORT_IP_BASED_GIDS = 1 << 26,
+ PVRDMA_PORT_CAP_FLAGS_MAX = PVRDMA_PORT_IP_BASED_GIDS,
+};
+
+enum pvrdma_port_width {
+ PVRDMA_WIDTH_1X = 1,
+ PVRDMA_WIDTH_4X = 2,
+ PVRDMA_WIDTH_8X = 4,
+ PVRDMA_WIDTH_12X = 8,
+};
+
+static inline int pvrdma_width_enum_to_int(enum pvrdma_port_width width)
+{
+ switch (width) {
+ case PVRDMA_WIDTH_1X: return 1;
+ case PVRDMA_WIDTH_4X: return 4;
+ case PVRDMA_WIDTH_8X: return 8;
+ case PVRDMA_WIDTH_12X: return 12;
+ default: return -1;
+ }
+}
+
+enum pvrdma_port_speed {
+ PVRDMA_SPEED_SDR = 1,
+ PVRDMA_SPEED_DDR = 2,
+ PVRDMA_SPEED_QDR = 4,
+ PVRDMA_SPEED_FDR10 = 8,
+ PVRDMA_SPEED_FDR = 16,
+ PVRDMA_SPEED_EDR = 32,
+};
+
+struct pvrdma_port_attr {
+ enum pvrdma_port_state state;
+ enum pvrdma_mtu max_mtu;
+ enum pvrdma_mtu active_mtu;
+ u32 gid_tbl_len;
+ u32 port_cap_flags;
+ u32 max_msg_sz;
+ u32 bad_pkey_cntr;
+ u32 qkey_viol_cntr;
+ u16 pkey_tbl_len;
+ u16 lid;
+ u16 sm_lid;
+ u8 lmc;
+ u8 max_vl_num;
+ u8 sm_sl;
+ u8 subnet_timeout;
+ u8 init_type_reply;
+ u8 active_width;
+ u8 active_speed;
+ u8 phys_state;
+ u8 reserved[2];
+};
+
+struct pvrdma_global_route {
+ union pvrdma_gid dgid;
+ u32 flow_label;
+ u8 sgid_index;
+ u8 hop_limit;
+ u8 traffic_class;
+ u8 reserved;
+};
+
+struct pvrdma_grh {
+ __be32 version_tclass_flow;
+ __be16 paylen;
+ u8 next_hdr;
+ u8 hop_limit;
+ union pvrdma_gid sgid;
+ union pvrdma_gid dgid;
+};
+
+enum pvrdma_ah_flags {
+ PVRDMA_AH_GRH = 1,
+};
+
+enum pvrdma_rate {
+ PVRDMA_RATE_PORT_CURRENT = 0,
+ PVRDMA_RATE_2_5_GBPS = 2,
+ PVRDMA_RATE_5_GBPS = 5,
+ PVRDMA_RATE_10_GBPS = 3,
+ PVRDMA_RATE_20_GBPS = 6,
+ PVRDMA_RATE_30_GBPS = 4,
+ PVRDMA_RATE_40_GBPS = 7,
+ PVRDMA_RATE_60_GBPS = 8,
+ PVRDMA_RATE_80_GBPS = 9,
+ PVRDMA_RATE_120_GBPS = 10,
+ PVRDMA_RATE_14_GBPS = 11,
+ PVRDMA_RATE_56_GBPS = 12,
+ PVRDMA_RATE_112_GBPS = 13,
+ PVRDMA_RATE_168_GBPS = 14,
+ PVRDMA_RATE_25_GBPS = 15,
+ PVRDMA_RATE_100_GBPS = 16,
+ PVRDMA_RATE_200_GBPS = 17,
+ PVRDMA_RATE_300_GBPS = 18,
+};
+
+struct pvrdma_ah_attr {
+ struct pvrdma_global_route grh;
+ u16 dlid;
+ u16 vlan_id;
+ u8 sl;
+ u8 src_path_bits;
+ u8 static_rate;
+ u8 ah_flags;
+ u8 port_num;
+ u8 dmac[6];
+ u8 reserved;
+};
+
+enum pvrdma_wc_status {
+ PVRDMA_WC_SUCCESS,
+ PVRDMA_WC_LOC_LEN_ERR,
+ PVRDMA_WC_LOC_QP_OP_ERR,
+ PVRDMA_WC_LOC_EEC_OP_ERR,
+ PVRDMA_WC_LOC_PROT_ERR,
+ PVRDMA_WC_WR_FLUSH_ERR,
+ PVRDMA_WC_MW_BIND_ERR,
+ PVRDMA_WC_BAD_RESP_ERR,
+ PVRDMA_WC_LOC_ACCESS_ERR,
+ PVRDMA_WC_REM_INV_REQ_ERR,
+ PVRDMA_WC_REM_ACCESS_ERR,
+ PVRDMA_WC_REM_OP_ERR,
+ PVRDMA_WC_RETRY_EXC_ERR,
+ PVRDMA_WC_RNR_RETRY_EXC_ERR,
+ PVRDMA_WC_LOC_RDD_VIOL_ERR,
+ PVRDMA_WC_REM_INV_RD_REQ_ERR,
+ PVRDMA_WC_REM_ABORT_ERR,
+ PVRDMA_WC_INV_EECN_ERR,
+ PVRDMA_WC_INV_EEC_STATE_ERR,
+ PVRDMA_WC_FATAL_ERR,
+ PVRDMA_WC_RESP_TIMEOUT_ERR,
+ PVRDMA_WC_GENERAL_ERR,
+};
+
+enum pvrdma_wc_opcode {
+ PVRDMA_WC_SEND,
+ PVRDMA_WC_RDMA_WRITE,
+ PVRDMA_WC_RDMA_READ,
+ PVRDMA_WC_COMP_SWAP,
+ PVRDMA_WC_FETCH_ADD,
+ PVRDMA_WC_BIND_MW,
+ PVRDMA_WC_LSO,
+ PVRDMA_WC_LOCAL_INV,
+ PVRDMA_WC_FAST_REG_MR,
+ PVRDMA_WC_MASKED_COMP_SWAP,
+ PVRDMA_WC_MASKED_FETCH_ADD,
+ PVRDMA_WC_RECV = 1 << 7,
+ PVRDMA_WC_RECV_RDMA_WITH_IMM,
+};
+
+enum pvrdma_wc_flags {
+ PVRDMA_WC_GRH = 1 << 0,
+ PVRDMA_WC_WITH_IMM = 1 << 1,
+ PVRDMA_WC_WITH_INVALIDATE = 1 << 2,
+ PVRDMA_WC_IP_CSUM_OK = 1 << 3,
+ PVRDMA_WC_WITH_SMAC = 1 << 4,
+ PVRDMA_WC_WITH_VLAN = 1 << 5,
+ PVRDMA_WC_FLAGS_MAX = PVRDMA_WC_WITH_VLAN,
+};
+
+enum pvrdma_cq_notify_flags {
+ PVRDMA_CQ_SOLICITED = 1 << 0,
+ PVRDMA_CQ_NEXT_COMP = 1 << 1,
+ PVRDMA_CQ_SOLICITED_MASK = PVRDMA_CQ_SOLICITED |
+ PVRDMA_CQ_NEXT_COMP,
+ PVRDMA_CQ_REPORT_MISSED_EVENTS = 1 << 2,
+};
+
+struct pvrdma_qp_cap {
+ u32 max_send_wr;
+ u32 max_recv_wr;
+ u32 max_send_sge;
+ u32 max_recv_sge;
+ u32 max_inline_data;
+ u32 reserved;
+};
+
+enum pvrdma_sig_type {
+ PVRDMA_SIGNAL_ALL_WR,
+ PVRDMA_SIGNAL_REQ_WR,
+};
+
+enum pvrdma_qp_type {
+ PVRDMA_QPT_SMI,
+ PVRDMA_QPT_GSI,
+ PVRDMA_QPT_RC,
+ PVRDMA_QPT_UC,
+ PVRDMA_QPT_UD,
+ PVRDMA_QPT_RAW_IPV6,
+ PVRDMA_QPT_RAW_ETHERTYPE,
+ PVRDMA_QPT_RAW_PACKET = 8,
+ PVRDMA_QPT_XRC_INI = 9,
+ PVRDMA_QPT_XRC_TGT,
+ PVRDMA_QPT_MAX,
+};
+
+enum pvrdma_qp_create_flags {
+ PVRDMA_QP_CREATE_IPOPVRDMA_UD_LSO = 1 << 0,
+ PVRDMA_QP_CREATE_BLOCK_MULTICAST_LOOPBACK = 1 << 1,
+};
+
+enum pvrdma_qp_attr_mask {
+ PVRDMA_QP_STATE = 1 << 0,
+ PVRDMA_QP_CUR_STATE = 1 << 1,
+ PVRDMA_QP_EN_SQD_ASYNC_NOTIFY = 1 << 2,
+ PVRDMA_QP_ACCESS_FLAGS = 1 << 3,
+ PVRDMA_QP_PKEY_INDEX = 1 << 4,
+ PVRDMA_QP_PORT = 1 << 5,
+ PVRDMA_QP_QKEY = 1 << 6,
+ PVRDMA_QP_AV = 1 << 7,
+ PVRDMA_QP_PATH_MTU = 1 << 8,
+ PVRDMA_QP_TIMEOUT = 1 << 9,
+ PVRDMA_QP_RETRY_CNT = 1 << 10,
+ PVRDMA_QP_RNR_RETRY = 1 << 11,
+ PVRDMA_QP_RQ_PSN = 1 << 12,
+ PVRDMA_QP_MAX_QP_RD_ATOMIC = 1 << 13,
+ PVRDMA_QP_ALT_PATH = 1 << 14,
+ PVRDMA_QP_MIN_RNR_TIMER = 1 << 15,
+ PVRDMA_QP_SQ_PSN = 1 << 16,
+ PVRDMA_QP_MAX_DEST_RD_ATOMIC = 1 << 17,
+ PVRDMA_QP_PATH_MIG_STATE = 1 << 18,
+ PVRDMA_QP_CAP = 1 << 19,
+ PVRDMA_QP_DEST_QPN = 1 << 20,
+ PVRDMA_QP_ATTR_MASK_MAX = PVRDMA_QP_DEST_QPN,
+};
+
+enum pvrdma_qp_state {
+ PVRDMA_QPS_RESET,
+ PVRDMA_QPS_INIT,
+ PVRDMA_QPS_RTR,
+ PVRDMA_QPS_RTS,
+ PVRDMA_QPS_SQD,
+ PVRDMA_QPS_SQE,
+ PVRDMA_QPS_ERR,
+};
+
+enum pvrdma_mig_state {
+ PVRDMA_MIG_MIGRATED,
+ PVRDMA_MIG_REARM,
+ PVRDMA_MIG_ARMED,
+};
+
+enum pvrdma_mw_type {
+ PVRDMA_MW_TYPE_1 = 1,
+ PVRDMA_MW_TYPE_2 = 2,
+};
+
+struct pvrdma_qp_attr {
+ enum pvrdma_qp_state qp_state;
+ enum pvrdma_qp_state cur_qp_state;
+ enum pvrdma_mtu path_mtu;
+ enum pvrdma_mig_state path_mig_state;
+ u32 qkey;
+ u32 rq_psn;
+ u32 sq_psn;
+ u32 dest_qp_num;
+ u32 qp_access_flags;
+ u16 pkey_index;
+ u16 alt_pkey_index;
+ u8 en_sqd_async_notify;
+ u8 sq_draining;
+ u8 max_rd_atomic;
+ u8 max_dest_rd_atomic;
+ u8 min_rnr_timer;
+ u8 port_num;
+ u8 timeout;
+ u8 retry_cnt;
+ u8 rnr_retry;
+ u8 alt_port_num;
+ u8 alt_timeout;
+ u8 reserved[5];
+ struct pvrdma_qp_cap cap;
+ struct pvrdma_ah_attr ah_attr;
+ struct pvrdma_ah_attr alt_ah_attr;
+};
+
+enum pvrdma_wr_opcode {
+ PVRDMA_WR_RDMA_WRITE,
+ PVRDMA_WR_RDMA_WRITE_WITH_IMM,
+ PVRDMA_WR_SEND,
+ PVRDMA_WR_SEND_WITH_IMM,
+ PVRDMA_WR_RDMA_READ,
+ PVRDMA_WR_ATOMIC_CMP_AND_SWP,
+ PVRDMA_WR_ATOMIC_FETCH_AND_ADD,
+ PVRDMA_WR_LSO,
+ PVRDMA_WR_SEND_WITH_INV,
+ PVRDMA_WR_RDMA_READ_WITH_INV,
+ PVRDMA_WR_LOCAL_INV,
+ PVRDMA_WR_FAST_REG_MR,
+ PVRDMA_WR_MASKED_ATOMIC_CMP_AND_SWP,
+ PVRDMA_WR_MASKED_ATOMIC_FETCH_AND_ADD,
+ PVRDMA_WR_BIND_MW,
+ PVRDMA_WR_REG_SIG_MR,
+};
+
+enum pvrdma_send_flags {
+ PVRDMA_SEND_FENCE = 1 << 0,
+ PVRDMA_SEND_SIGNALED = 1 << 1,
+ PVRDMA_SEND_SOLICITED = 1 << 2,
+ PVRDMA_SEND_INLINE = 1 << 3,
+ PVRDMA_SEND_IP_CSUM = 1 << 4,
+ PVRDMA_SEND_FLAGS_MAX = PVRDMA_SEND_IP_CSUM,
+};
+
+enum pvrdma_access_flags {
+ PVRDMA_ACCESS_LOCAL_WRITE = 1 << 0,
+ PVRDMA_ACCESS_REMOTE_WRITE = 1 << 1,
+ PVRDMA_ACCESS_REMOTE_READ = 1 << 2,
+ PVRDMA_ACCESS_REMOTE_ATOMIC = 1 << 3,
+ PVRDMA_ACCESS_MW_BIND = 1 << 4,
+ PVRDMA_ZERO_BASED = 1 << 5,
+ PVRDMA_ACCESS_ON_DEMAND = 1 << 6,
+ PVRDMA_ACCESS_FLAGS_MAX = PVRDMA_ACCESS_ON_DEMAND,
+};
+
+#endif /* __PVRDMA_IB_VERBS_H__ */
--
2.7.4
^ permalink raw reply related
* [PATCH v5 04/16] IB/pvrdma: Add the paravirtual RDMA device specification
From: Adit Ranadive @ 2016-09-24 23:21 UTC (permalink / raw)
To: dledford, linux-rdma, pv-drivers
Cc: Adit Ranadive, netdev, linux-pci, jhansen, asarwade, georgezhang,
bryantan
In-Reply-To: <cover.1474759181.git.aditr@vmware.com>
This patch describes the main specification of the underlying virtual RDMA
device. The pvrdma_dev_api header file defines the Verbs commands and
their parameters that can be issued to the device backend.
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Jorgen Hansen <jhansen@vmware.com>
Reviewed-by: George Zhang <georgezhang@vmware.com>
Reviewed-by: Aditya Sarwade <asarwade@vmware.com>
Reviewed-by: Bryan Tan <bryantan@vmware.com>
Signed-off-by: Adit Ranadive <aditr@vmware.com>
---
Changes v4->v5:
- Update include for headers moved to UAPI.
- Removed __ prefix for unsigned vars.
Changes v3->v4:
- Removed explicit enum values.
Changes v2->v3:
- Defined 9 and 18 for page directory.
- Stripped spaces in some comments.
---
drivers/infiniband/hw/pvrdma/pvrdma_defs.h | 301 +++++++++++++++++++++++
drivers/infiniband/hw/pvrdma/pvrdma_dev_api.h | 342 ++++++++++++++++++++++++++
2 files changed, 643 insertions(+)
create mode 100644 drivers/infiniband/hw/pvrdma/pvrdma_defs.h
create mode 100644 drivers/infiniband/hw/pvrdma/pvrdma_dev_api.h
diff --git a/drivers/infiniband/hw/pvrdma/pvrdma_defs.h b/drivers/infiniband/hw/pvrdma/pvrdma_defs.h
new file mode 100644
index 0000000..8105b01
--- /dev/null
+++ b/drivers/infiniband/hw/pvrdma/pvrdma_defs.h
@@ -0,0 +1,301 @@
+/*
+ * Copyright (c) 2012-2016 VMware, Inc. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of EITHER the GNU General Public License
+ * version 2 as published by the Free Software Foundation or the BSD
+ * 2-Clause License. This program is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License version 2 for more details at
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program available in the file COPYING in the main
+ * directory of this source tree.
+ *
+ * The BSD 2-Clause License
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __PVRDMA_DEFS_H__
+#define __PVRDMA_DEFS_H__
+
+#include <linux/types.h>
+#include <rdma/pvrdma-uapi.h>
+#include "pvrdma_ib_verbs.h"
+
+/*
+ * Masks and accessors for page directory, which is a two-level lookup:
+ * page directory -> page table -> page. Only one directory for now, but we
+ * could expand that easily. 9 bits for tables, 9 bits for pages, gives one
+ * gigabyte for memory regions and so forth.
+ */
+
+#define PVRDMA_PDIR_SHIFT 18
+#define PVRDMA_PTABLE_SHIFT 9
+#define PVRDMA_PAGE_DIR_DIR(x) (((x) >> PVRDMA_PDIR_SHIFT) & 0x1)
+#define PVRDMA_PAGE_DIR_TABLE(x) (((x) >> PVRDMA_PTABLE_SHIFT) & 0x1ff)
+#define PVRDMA_PAGE_DIR_PAGE(x) ((x) & 0x1ff)
+#define PVRDMA_PAGE_DIR_MAX_PAGES (1 * 512 * 512)
+#define PVRDMA_MAX_FAST_REG_PAGES 128
+
+/*
+ * Max MSI-X vectors.
+ */
+
+#define PVRDMA_MAX_INTERRUPTS 3
+
+/* Register offsets within PCI resource on BAR1. */
+#define PVRDMA_REG_VERSION 0x00 /* R: Version of device. */
+#define PVRDMA_REG_DSRLOW 0x04 /* W: Device shared region low PA. */
+#define PVRDMA_REG_DSRHIGH 0x08 /* W: Device shared region high PA. */
+#define PVRDMA_REG_CTL 0x0c /* W: PVRDMA_DEVICE_CTL */
+#define PVRDMA_REG_REQUEST 0x10 /* W: Indicate device request. */
+#define PVRDMA_REG_ERR 0x14 /* R: Device error. */
+#define PVRDMA_REG_ICR 0x18 /* R: Interrupt cause. */
+#define PVRDMA_REG_IMR 0x1c /* R/W: Interrupt mask. */
+#define PVRDMA_REG_MACL 0x20 /* R/W: MAC address low. */
+#define PVRDMA_REG_MACH 0x24 /* R/W: MAC address high. */
+
+/* Object flags. */
+#define PVRDMA_CQ_FLAG_ARMED_SOL BIT(0) /* Armed for solicited-only. */
+#define PVRDMA_CQ_FLAG_ARMED BIT(1) /* Armed. */
+#define PVRDMA_MR_FLAG_DMA BIT(0) /* DMA region. */
+#define PVRDMA_MR_FLAG_FRMR BIT(1) /* Fast reg memory region. */
+
+/*
+ * Atomic operation capability (masked versions are extended atomic
+ * operations.
+ */
+
+#define PVRDMA_ATOMIC_OP_COMP_SWAP BIT(0) /* Compare and swap. */
+#define PVRDMA_ATOMIC_OP_FETCH_ADD BIT(1) /* Fetch and add. */
+#define PVRDMA_ATOMIC_OP_MASK_COMP_SWAP BIT(2) /* Masked compare and swap. */
+#define PVRDMA_ATOMIC_OP_MASK_FETCH_ADD BIT(3) /* Masked fetch and add. */
+
+/*
+ * Base Memory Management Extension flags to support Fast Reg Memory Regions
+ * and Fast Reg Work Requests. Each flag represents a verb operation and we
+ * must support all of them to qualify for the BMME device cap.
+ */
+
+#define PVRDMA_BMME_FLAG_LOCAL_INV BIT(0) /* Local Invalidate. */
+#define PVRDMA_BMME_FLAG_REMOTE_INV BIT(1) /* Remote Invalidate. */
+#define PVRDMA_BMME_FLAG_FAST_REG_WR BIT(2) /* Fast Reg Work Request. */
+
+/*
+ * GID types. The interpretation of the gid_types bit field in the device
+ * capabilities will depend on the device mode. For now, the device only
+ * supports RoCE as mode, so only the different GID types for RoCE are
+ * defined.
+ */
+
+#define PVRDMA_GID_TYPE_FLAG_ROCE_V1 BIT(0)
+#define PVRDMA_GID_TYPE_FLAG_ROCE_V2 BIT(1)
+
+enum pvrdma_pci_resource {
+ PVRDMA_PCI_RESOURCE_MSIX, /* BAR0: MSI-X, MMIO. */
+ PVRDMA_PCI_RESOURCE_REG, /* BAR1: Registers, MMIO. */
+ PVRDMA_PCI_RESOURCE_UAR, /* BAR2: UAR pages, MMIO, 64-bit. */
+ PVRDMA_PCI_RESOURCE_LAST, /* Last. */
+};
+
+enum pvrdma_device_ctl {
+ PVRDMA_DEVICE_CTL_ACTIVATE, /* Activate device. */
+ PVRDMA_DEVICE_CTL_QUIESCE, /* Quiesce device. */
+ PVRDMA_DEVICE_CTL_RESET, /* Reset device. */
+};
+
+enum pvrdma_intr_vector {
+ PVRDMA_INTR_VECTOR_RESPONSE, /* Command response. */
+ PVRDMA_INTR_VECTOR_ASYNC, /* Async events. */
+ PVRDMA_INTR_VECTOR_CQ, /* CQ notification. */
+ /* Additional CQ notification vectors. */
+};
+
+enum pvrdma_intr_cause {
+ PVRDMA_INTR_CAUSE_RESPONSE = (1 << PVRDMA_INTR_VECTOR_RESPONSE),
+ PVRDMA_INTR_CAUSE_ASYNC = (1 << PVRDMA_INTR_VECTOR_ASYNC),
+ PVRDMA_INTR_CAUSE_CQ = (1 << PVRDMA_INTR_VECTOR_CQ),
+};
+
+enum pvrdma_intr_type {
+ PVRDMA_INTR_TYPE_INTX, /* Legacy. */
+ PVRDMA_INTR_TYPE_MSI, /* MSI. */
+ PVRDMA_INTR_TYPE_MSIX, /* MSI-X. */
+};
+
+enum pvrdma_gos_bits {
+ PVRDMA_GOS_BITS_UNK, /* Unknown. */
+ PVRDMA_GOS_BITS_32, /* 32-bit. */
+ PVRDMA_GOS_BITS_64, /* 64-bit. */
+};
+
+enum pvrdma_gos_type {
+ PVRDMA_GOS_TYPE_UNK, /* Unknown. */
+ PVRDMA_GOS_TYPE_LINUX, /* Linux. */
+};
+
+enum pvrdma_device_mode {
+ PVRDMA_DEVICE_MODE_ROCE, /* RoCE. */
+ PVRDMA_DEVICE_MODE_IWARP, /* iWarp. */
+ PVRDMA_DEVICE_MODE_IB, /* InfiniBand. */
+};
+
+struct pvrdma_gos_info {
+ u32 gos_bits:2; /* W: PVRDMA_GOS_BITS_ */
+ u32 gos_type:4; /* W: PVRDMA_GOS_TYPE_ */
+ u32 gos_ver:16; /* W: Guest OS version. */
+ u32 gos_misc:10; /* W: Other. */
+ u32 pad; /* Pad to 8-byte alignment. */
+};
+
+struct pvrdma_device_caps {
+ u64 fw_ver; /* R: Query device. */
+ __be64 node_guid;
+ __be64 sys_image_guid;
+ u64 max_mr_size;
+ u64 page_size_cap;
+ u64 atomic_arg_sizes; /* EXP verbs. */
+ u32 exp_comp_mask; /* EXP verbs. */
+ u32 device_cap_flags2; /* EXP verbs. */
+ u32 max_fa_bit_boundary; /* EXP verbs. */
+ u32 log_max_atomic_inline_arg; /* EXP verbs. */
+ u32 vendor_id;
+ u32 vendor_part_id;
+ u32 hw_ver;
+ u32 max_qp;
+ u32 max_qp_wr;
+ u32 device_cap_flags;
+ u32 max_sge;
+ u32 max_sge_rd;
+ u32 max_cq;
+ u32 max_cqe;
+ u32 max_mr;
+ u32 max_pd;
+ u32 max_qp_rd_atom;
+ u32 max_ee_rd_atom;
+ u32 max_res_rd_atom;
+ u32 max_qp_init_rd_atom;
+ u32 max_ee_init_rd_atom;
+ u32 max_ee;
+ u32 max_rdd;
+ u32 max_mw;
+ u32 max_raw_ipv6_qp;
+ u32 max_raw_ethy_qp;
+ u32 max_mcast_grp;
+ u32 max_mcast_qp_attach;
+ u32 max_total_mcast_qp_attach;
+ u32 max_ah;
+ u32 max_fmr;
+ u32 max_map_per_fmr;
+ u32 max_srq;
+ u32 max_srq_wr;
+ u32 max_srq_sge;
+ u32 max_uar;
+ u32 gid_tbl_len;
+ u16 max_pkeys;
+ u8 local_ca_ack_delay;
+ u8 phys_port_cnt;
+ u8 mode; /* PVRDMA_DEVICE_MODE_ */
+ u8 atomic_ops; /* PVRDMA_ATOMIC_OP_* bits */
+ u8 bmme_flags; /* FRWR Mem Mgmt Extensions */
+ u8 gid_types; /* PVRDMA_GID_TYPE_FLAG_ */
+ u8 reserved[4];
+};
+
+struct pvrdma_ring_page_info {
+ u32 num_pages; /* Num pages incl. header. */
+ u32 reserved; /* Reserved. */
+ u64 pdir_dma; /* Page directory PA. */
+};
+
+#pragma pack(push, 1)
+
+struct pvrdma_device_shared_region {
+ u32 driver_version; /* W: Driver version. */
+ u32 pad; /* Pad to 8-byte align. */
+ struct pvrdma_gos_info gos_info; /* W: Guest OS information. */
+ u64 cmd_slot_dma; /* W: Command slot address. */
+ u64 resp_slot_dma; /* W: Response slot address. */
+ struct pvrdma_ring_page_info async_ring_pages;
+ /* W: Async ring page info. */
+ struct pvrdma_ring_page_info cq_ring_pages;
+ /* W: CQ ring page info. */
+ u32 uar_pfn; /* W: UAR pageframe. */
+ u32 pad2; /* Pad to 8-byte align. */
+ struct pvrdma_device_caps caps; /* R: Device capabilities. */
+};
+
+#pragma pack(pop)
+
+
+/* Event types. Currently a 1:1 mapping with enum ib_event. */
+enum pvrdma_eqe_type {
+ PVRDMA_EVENT_CQ_ERR,
+ PVRDMA_EVENT_QP_FATAL,
+ PVRDMA_EVENT_QP_REQ_ERR,
+ PVRDMA_EVENT_QP_ACCESS_ERR,
+ PVRDMA_EVENT_COMM_EST,
+ PVRDMA_EVENT_SQ_DRAINED,
+ PVRDMA_EVENT_PATH_MIG,
+ PVRDMA_EVENT_PATH_MIG_ERR,
+ PVRDMA_EVENT_DEVICE_FATAL,
+ PVRDMA_EVENT_PORT_ACTIVE,
+ PVRDMA_EVENT_PORT_ERR,
+ PVRDMA_EVENT_LID_CHANGE,
+ PVRDMA_EVENT_PKEY_CHANGE,
+ PVRDMA_EVENT_SM_CHANGE,
+ PVRDMA_EVENT_SRQ_ERR,
+ PVRDMA_EVENT_SRQ_LIMIT_REACHED,
+ PVRDMA_EVENT_QP_LAST_WQE_REACHED,
+ PVRDMA_EVENT_CLIENT_REREGISTER,
+ PVRDMA_EVENT_GID_CHANGE,
+};
+
+/* Event queue element. */
+struct pvrdma_eqe {
+ u32 type; /* Event type. */
+ u32 info; /* Handle, other. */
+};
+
+/* CQ notification queue element. */
+struct pvrdma_cqne {
+ u32 info; /* Handle */
+};
+
+static inline void pvrdma_init_cqe(struct pvrdma_cqe *cqe, u64 wr_id, u64 qp)
+{
+ memset(cqe, 0, sizeof(*cqe));
+ cqe->status = PVRDMA_WC_GENERAL_ERR;
+ cqe->wr_id = wr_id;
+ cqe->qp = qp;
+}
+
+#endif /* __PVRDMA_DEFS_H__ */
diff --git a/drivers/infiniband/hw/pvrdma/pvrdma_dev_api.h b/drivers/infiniband/hw/pvrdma/pvrdma_dev_api.h
new file mode 100644
index 0000000..66682cf
--- /dev/null
+++ b/drivers/infiniband/hw/pvrdma/pvrdma_dev_api.h
@@ -0,0 +1,342 @@
+/*
+ * Copyright (c) 2012-2016 VMware, Inc. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of EITHER the GNU General Public License
+ * version 2 as published by the Free Software Foundation or the BSD
+ * 2-Clause License. This program is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License version 2 for more details at
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program available in the file COPYING in the main
+ * directory of this source tree.
+ *
+ * The BSD 2-Clause License
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __PVRDMA_DEV_API_H__
+#define __PVRDMA_DEV_API_H__
+
+#include <linux/types.h>
+#include "pvrdma_ib_verbs.h"
+
+enum {
+ PVRDMA_CMD_FIRST,
+ PVRDMA_CMD_QUERY_PORT = PVRDMA_CMD_FIRST,
+ PVRDMA_CMD_QUERY_PKEY,
+ PVRDMA_CMD_CREATE_PD,
+ PVRDMA_CMD_DESTROY_PD,
+ PVRDMA_CMD_CREATE_MR,
+ PVRDMA_CMD_DESTROY_MR,
+ PVRDMA_CMD_CREATE_CQ,
+ PVRDMA_CMD_RESIZE_CQ,
+ PVRDMA_CMD_DESTROY_CQ,
+ PVRDMA_CMD_CREATE_QP,
+ PVRDMA_CMD_MODIFY_QP,
+ PVRDMA_CMD_QUERY_QP,
+ PVRDMA_CMD_DESTROY_QP,
+ PVRDMA_CMD_CREATE_UC,
+ PVRDMA_CMD_DESTROY_UC,
+ PVRDMA_CMD_CREATE_BIND,
+ PVRDMA_CMD_DESTROY_BIND,
+ PVRDMA_CMD_MAX,
+};
+
+enum {
+ PVRDMA_CMD_FIRST_RESP = (1 << 31),
+ PVRDMA_CMD_QUERY_PORT_RESP = PVRDMA_CMD_FIRST_RESP,
+ PVRDMA_CMD_QUERY_PKEY_RESP,
+ PVRDMA_CMD_CREATE_PD_RESP,
+ PVRDMA_CMD_DESTROY_PD_RESP_NOOP,
+ PVRDMA_CMD_CREATE_MR_RESP,
+ PVRDMA_CMD_DESTROY_MR_RESP_NOOP,
+ PVRDMA_CMD_CREATE_CQ_RESP,
+ PVRDMA_CMD_RESIZE_CQ_RESP,
+ PVRDMA_CMD_DESTROY_CQ_RESP_NOOP,
+ PVRDMA_CMD_CREATE_QP_RESP,
+ PVRDMA_CMD_MODIFY_QP_RESP,
+ PVRDMA_CMD_QUERY_QP_RESP,
+ PVRDMA_CMD_DESTROY_QP_RESP,
+ PVRDMA_CMD_CREATE_UC_RESP,
+ PVRDMA_CMD_DESTROY_UC_RESP_NOOP,
+ PVRDMA_CMD_CREATE_BIND_RESP_NOOP,
+ PVRDMA_CMD_DESTROY_BIND_RESP_NOOP,
+ PVRDMA_CMD_MAX_RESP,
+};
+
+struct pvrdma_cmd_hdr {
+ u64 response; /* Key for response lookup. */
+ u32 cmd; /* PVRDMA_CMD_ */
+ u32 reserved; /* Reserved. */
+};
+
+struct pvrdma_cmd_resp_hdr {
+ u64 response; /* From cmd hdr. */
+ u32 ack; /* PVRDMA_CMD_XXX_RESP */
+ u8 err; /* Error. */
+ u8 reserved[3]; /* Reserved. */
+};
+
+struct pvrdma_cmd_query_port {
+ struct pvrdma_cmd_hdr hdr;
+ u8 port_num;
+ u8 reserved[7];
+};
+
+struct pvrdma_cmd_query_port_resp {
+ struct pvrdma_cmd_resp_hdr hdr;
+ struct pvrdma_port_attr attrs;
+};
+
+struct pvrdma_cmd_query_pkey {
+ struct pvrdma_cmd_hdr hdr;
+ u8 port_num;
+ u8 index;
+ u8 reserved[6];
+};
+
+struct pvrdma_cmd_query_pkey_resp {
+ struct pvrdma_cmd_resp_hdr hdr;
+ u16 pkey;
+ u8 reserved[6];
+};
+
+struct pvrdma_cmd_create_uc {
+ struct pvrdma_cmd_hdr hdr;
+ u32 pfn; /* UAR page frame number */
+ u8 reserved[4];
+};
+
+struct pvrdma_cmd_create_uc_resp {
+ struct pvrdma_cmd_resp_hdr hdr;
+ u32 ctx_handle;
+ u8 reserved[4];
+};
+
+struct pvrdma_cmd_destroy_uc {
+ struct pvrdma_cmd_hdr hdr;
+ u32 ctx_handle;
+ u8 reserved[4];
+};
+
+struct pvrdma_cmd_create_pd {
+ struct pvrdma_cmd_hdr hdr;
+ u32 ctx_handle;
+ u8 reserved[4];
+};
+
+struct pvrdma_cmd_create_pd_resp {
+ struct pvrdma_cmd_resp_hdr hdr;
+ u32 pd_handle;
+ u8 reserved[4];
+};
+
+struct pvrdma_cmd_destroy_pd {
+ struct pvrdma_cmd_hdr hdr;
+ u32 pd_handle;
+ u8 reserved[4];
+};
+
+struct pvrdma_cmd_create_mr {
+ struct pvrdma_cmd_hdr hdr;
+ u64 start;
+ u64 length;
+ u64 pdir_dma;
+ u32 pd_handle;
+ u32 access_flags;
+ u32 flags;
+ u32 nchunks;
+};
+
+struct pvrdma_cmd_create_mr_resp {
+ struct pvrdma_cmd_resp_hdr hdr;
+ u32 mr_handle;
+ u32 lkey;
+ u32 rkey;
+ u8 reserved[4];
+};
+
+struct pvrdma_cmd_destroy_mr {
+ struct pvrdma_cmd_hdr hdr;
+ u32 mr_handle;
+ u8 reserved[4];
+};
+
+struct pvrdma_cmd_create_cq {
+ struct pvrdma_cmd_hdr hdr;
+ u64 pdir_dma;
+ u32 ctx_handle;
+ u32 cqe;
+ u32 nchunks;
+ u8 reserved[4];
+};
+
+struct pvrdma_cmd_create_cq_resp {
+ struct pvrdma_cmd_resp_hdr hdr;
+ u32 cq_handle;
+ u32 cqe;
+};
+
+struct pvrdma_cmd_resize_cq {
+ struct pvrdma_cmd_hdr hdr;
+ u32 cq_handle;
+ u32 cqe;
+};
+
+struct pvrdma_cmd_resize_cq_resp {
+ struct pvrdma_cmd_resp_hdr hdr;
+ u32 cqe;
+ u8 reserved[4];
+};
+
+struct pvrdma_cmd_destroy_cq {
+ struct pvrdma_cmd_hdr hdr;
+ u32 cq_handle;
+ u8 reserved[4];
+};
+
+struct pvrdma_cmd_create_qp {
+ struct pvrdma_cmd_hdr hdr;
+ u64 pdir_dma;
+ u32 pd_handle;
+ u32 send_cq_handle;
+ u32 recv_cq_handle;
+ u32 srq_handle;
+ u32 max_send_wr;
+ u32 max_recv_wr;
+ u32 max_send_sge;
+ u32 max_recv_sge;
+ u32 max_inline_data;
+ u32 lkey;
+ u32 access_flags;
+ u16 total_chunks;
+ u16 send_chunks;
+ u16 max_atomic_arg;
+ u8 sq_sig_all;
+ u8 qp_type;
+ u8 is_srq;
+ u8 reserved[3];
+};
+
+struct pvrdma_cmd_create_qp_resp {
+ struct pvrdma_cmd_resp_hdr hdr;
+ u32 qpn;
+ u32 max_send_wr;
+ u32 max_recv_wr;
+ u32 max_send_sge;
+ u32 max_recv_sge;
+ u32 max_inline_data;
+};
+
+struct pvrdma_cmd_modify_qp {
+ struct pvrdma_cmd_hdr hdr;
+ u32 qp_handle;
+ u32 attr_mask;
+ struct pvrdma_qp_attr attrs;
+};
+
+struct pvrdma_cmd_query_qp {
+ struct pvrdma_cmd_hdr hdr;
+ u32 qp_handle;
+ u32 attr_mask;
+};
+
+struct pvrdma_cmd_query_qp_resp {
+ struct pvrdma_cmd_resp_hdr hdr;
+ struct pvrdma_qp_attr attrs;
+};
+
+struct pvrdma_cmd_destroy_qp {
+ struct pvrdma_cmd_hdr hdr;
+ u32 qp_handle;
+ u8 reserved[4];
+};
+
+struct pvrdma_cmd_destroy_qp_resp {
+ struct pvrdma_cmd_resp_hdr hdr;
+ u32 events_reported;
+ u8 reserved[4];
+};
+
+struct pvrdma_cmd_create_bind {
+ struct pvrdma_cmd_hdr hdr;
+ u32 mtu;
+ u32 vlan;
+ u32 index;
+ u8 new_gid[16];
+ u8 gid_type;
+ u8 reserved[3];
+};
+
+struct pvrdma_cmd_destroy_bind {
+ struct pvrdma_cmd_hdr hdr;
+ u32 index;
+ u8 dest_gid[16];
+ u8 reserved[4];
+};
+
+union pvrdma_cmd_req {
+ struct pvrdma_cmd_hdr hdr;
+ struct pvrdma_cmd_query_port query_port;
+ struct pvrdma_cmd_query_pkey query_pkey;
+ struct pvrdma_cmd_create_uc create_uc;
+ struct pvrdma_cmd_destroy_uc destroy_uc;
+ struct pvrdma_cmd_create_pd create_pd;
+ struct pvrdma_cmd_destroy_pd destroy_pd;
+ struct pvrdma_cmd_create_mr create_mr;
+ struct pvrdma_cmd_destroy_mr destroy_mr;
+ struct pvrdma_cmd_create_cq create_cq;
+ struct pvrdma_cmd_resize_cq resize_cq;
+ struct pvrdma_cmd_destroy_cq destroy_cq;
+ struct pvrdma_cmd_create_qp create_qp;
+ struct pvrdma_cmd_modify_qp modify_qp;
+ struct pvrdma_cmd_query_qp query_qp;
+ struct pvrdma_cmd_destroy_qp destroy_qp;
+ struct pvrdma_cmd_create_bind create_bind;
+ struct pvrdma_cmd_destroy_bind destroy_bind;
+};
+
+union pvrdma_cmd_resp {
+ struct pvrdma_cmd_resp_hdr hdr;
+ struct pvrdma_cmd_query_port_resp query_port_resp;
+ struct pvrdma_cmd_query_pkey_resp query_pkey_resp;
+ struct pvrdma_cmd_create_uc_resp create_uc_resp;
+ struct pvrdma_cmd_create_pd_resp create_pd_resp;
+ struct pvrdma_cmd_create_mr_resp create_mr_resp;
+ struct pvrdma_cmd_create_cq_resp create_cq_resp;
+ struct pvrdma_cmd_resize_cq_resp resize_cq_resp;
+ struct pvrdma_cmd_create_qp_resp create_qp_resp;
+ struct pvrdma_cmd_query_qp_resp query_qp_resp;
+ struct pvrdma_cmd_destroy_qp_resp destroy_qp_resp;
+};
+
+#endif /* __PVRDMA_DEV_API_H__ */
--
2.7.4
^ permalink raw reply related
* [PATCH v5 05/16] IB/pvrdma: Add functions for Verbs support
From: Adit Ranadive @ 2016-09-24 23:21 UTC (permalink / raw)
To: dledford, linux-rdma, pv-drivers
Cc: Adit Ranadive, netdev, linux-pci, jhansen, asarwade, georgezhang,
bryantan
In-Reply-To: <cover.1474759181.git.aditr@vmware.com>
This patch implements the remaining Verbs functions registered with the
core RDMA stack.
Reviewed-by: Jorgen Hansen <jhansen@vmware.com>
Reviewed-by: George Zhang <georgezhang@vmware.com>
Reviewed-by: Aditya Sarwade <asarwade@vmware.com>
Reviewed-by: Bryan Tan <bryantan@vmware.com>
Signed-off-by: Adit Ranadive <aditr@vmware.com>
---
Changes v4->v5:
- Update include for headers in UAPI folder.
- Removed setting any properties that are reported by device as 0.
- Simplified modify_port.
- PD should be allocated first in kernel then in device.
- Update to pvrdma_cmd_post for creating/destroying PD, Query port/device.
Changes v3->v4:
- Renamed priviledged -> privileged.
- Added error numbers for command errors.
- Removed unnecessary goto in modify_device.
- Moved pd allocation to after command execution.
- Removed an incorrect atomic_dec.
---
drivers/infiniband/hw/pvrdma/pvrdma_verbs.c | 577 ++++++++++++++++++++++++++++
drivers/infiniband/hw/pvrdma/pvrdma_verbs.h | 108 ++++++
2 files changed, 685 insertions(+)
create mode 100644 drivers/infiniband/hw/pvrdma/pvrdma_verbs.c
create mode 100644 drivers/infiniband/hw/pvrdma/pvrdma_verbs.h
diff --git a/drivers/infiniband/hw/pvrdma/pvrdma_verbs.c b/drivers/infiniband/hw/pvrdma/pvrdma_verbs.c
new file mode 100644
index 0000000..a7aef93d
--- /dev/null
+++ b/drivers/infiniband/hw/pvrdma/pvrdma_verbs.c
@@ -0,0 +1,577 @@
+/*
+ * Copyright (c) 2012-2016 VMware, Inc. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of EITHER the GNU General Public License
+ * version 2 as published by the Free Software Foundation or the BSD
+ * 2-Clause License. This program is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License version 2 for more details at
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program available in the file COPYING in the main
+ * directory of this source tree.
+ *
+ * The BSD 2-Clause License
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <asm/page.h>
+#include <linux/inet.h>
+#include <linux/io.h>
+#include <rdma/ib_addr.h>
+#include <rdma/ib_smi.h>
+#include <rdma/ib_user_verbs.h>
+#include <rdma/pvrdma-abi.h>
+
+#include "pvrdma.h"
+
+/**
+ * pvrdma_query_device - query device
+ * @ibdev: the device to query
+ * @props: the device properties
+ * @uhw: user data
+ *
+ * @return: 0 on success, otherwise negative errno
+ */
+int pvrdma_query_device(struct ib_device *ibdev,
+ struct ib_device_attr *props,
+ struct ib_udata *uhw)
+{
+ struct pvrdma_dev *dev = to_vdev(ibdev);
+
+ if (uhw->inlen || uhw->outlen)
+ return -EINVAL;
+
+ memset(props, 0, sizeof(*props));
+
+ props->fw_ver = dev->dsr->caps.fw_ver;
+ props->sys_image_guid = dev->dsr->caps.sys_image_guid;
+ props->max_mr_size = dev->dsr->caps.max_mr_size;
+ props->page_size_cap = dev->dsr->caps.page_size_cap;
+ props->vendor_id = dev->dsr->caps.vendor_id;
+ props->vendor_part_id = dev->pdev->device;
+ props->hw_ver = dev->dsr->caps.hw_ver;
+ props->max_qp = dev->dsr->caps.max_qp;
+ props->max_qp_wr = dev->dsr->caps.max_qp_wr;
+ props->device_cap_flags = dev->dsr->caps.device_cap_flags;
+ props->max_sge = dev->dsr->caps.max_sge;
+ props->max_cq = dev->dsr->caps.max_cq;
+ props->max_cqe = dev->dsr->caps.max_cqe;
+ props->max_mr = dev->dsr->caps.max_mr;
+ props->max_pd = dev->dsr->caps.max_pd;
+ props->max_qp_rd_atom = dev->dsr->caps.max_qp_rd_atom;
+ props->max_qp_init_rd_atom = dev->dsr->caps.max_qp_init_rd_atom;
+ props->atomic_cap =
+ dev->dsr->caps.atomic_ops &
+ (PVRDMA_ATOMIC_OP_COMP_SWAP | PVRDMA_ATOMIC_OP_FETCH_ADD) ?
+ IB_ATOMIC_HCA : IB_ATOMIC_NONE;
+ props->masked_atomic_cap = props->atomic_cap;
+ props->max_ah = dev->dsr->caps.max_ah;
+ props->max_pkeys = dev->dsr->caps.max_pkeys;
+ props->local_ca_ack_delay = dev->dsr->caps.local_ca_ack_delay;
+ if ((dev->dsr->caps.bmme_flags & PVRDMA_BMME_FLAG_LOCAL_INV) &&
+ (dev->dsr->caps.bmme_flags & PVRDMA_BMME_FLAG_REMOTE_INV) &&
+ (dev->dsr->caps.bmme_flags & PVRDMA_BMME_FLAG_FAST_REG_WR)) {
+ props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
+ }
+
+ return 0;
+}
+
+/**
+ * pvrdma_query_port - query device port attributes
+ * @ibdev: the device to query
+ * @port: the port number
+ * @props: the device properties
+ *
+ * @return: 0 on success, otherwise negative errno
+ */
+int pvrdma_query_port(struct ib_device *ibdev, u8 port,
+ struct ib_port_attr *props)
+{
+ struct pvrdma_dev *dev = to_vdev(ibdev);
+ union pvrdma_cmd_req req;
+ union pvrdma_cmd_resp rsp;
+ struct pvrdma_cmd_query_port *cmd = &req.query_port;
+ struct pvrdma_cmd_query_port_resp *resp = &rsp.query_port_resp;
+ int err;
+
+ memset(cmd, 0, sizeof(*cmd));
+ cmd->hdr.cmd = PVRDMA_CMD_QUERY_PORT;
+ cmd->port_num = port;
+
+ err = pvrdma_cmd_post(dev, &req, &rsp, PVRDMA_CMD_QUERY_PORT_RESP);
+ if (err < 0) {
+ dev_warn(&dev->pdev->dev,
+ "could not query port, error: %d\n", err);
+ return err;
+ }
+
+ memset(props, 0, sizeof(*props));
+
+ props->state = pvrdma_port_state_to_ib(resp->attrs.state);
+ props->max_mtu = pvrdma_mtu_to_ib(resp->attrs.max_mtu);
+ props->active_mtu = pvrdma_mtu_to_ib(resp->attrs.active_mtu);
+ props->gid_tbl_len = resp->attrs.gid_tbl_len;
+ props->port_cap_flags =
+ pvrdma_port_cap_flags_to_ib(resp->attrs.port_cap_flags);
+ props->max_msg_sz = resp->attrs.max_msg_sz;
+ props->bad_pkey_cntr = resp->attrs.bad_pkey_cntr;
+ props->qkey_viol_cntr = resp->attrs.qkey_viol_cntr;
+ props->pkey_tbl_len = resp->attrs.pkey_tbl_len;
+ props->lid = resp->attrs.lid;
+ props->sm_lid = resp->attrs.sm_lid;
+ props->lmc = resp->attrs.lmc;
+ props->max_vl_num = resp->attrs.max_vl_num;
+ props->sm_sl = resp->attrs.sm_sl;
+ props->subnet_timeout = resp->attrs.subnet_timeout;
+ props->init_type_reply = resp->attrs.init_type_reply;
+ props->active_width = pvrdma_port_width_to_ib(resp->attrs.active_width);
+ props->active_speed = pvrdma_port_speed_to_ib(resp->attrs.active_speed);
+ props->phys_state = resp->attrs.phys_state;
+
+ return 0;
+}
+
+/**
+ * pvrdma_query_gid - query device gid
+ * @ibdev: the device to query
+ * @port: the port number
+ * @index: the index
+ * @gid: the device gid value
+ *
+ * @return: 0 on success, otherwise negative errno
+ */
+int pvrdma_query_gid(struct ib_device *ibdev, u8 port, int index,
+ union ib_gid *gid)
+{
+ struct pvrdma_dev *dev = to_vdev(ibdev);
+
+ if (index >= dev->dsr->caps.gid_tbl_len)
+ return -EINVAL;
+
+ memcpy(gid, &dev->sgid_tbl[index], sizeof(union ib_gid));
+
+ return 0;
+}
+
+/**
+ * pvrdma_query_pkey - query device port's P_Key table
+ * @ibdev: the device to query
+ * @port: the port number
+ * @index: the index
+ * @pkey: the device P_Key value
+ *
+ * @return: 0 on success, otherwise negative errno
+ */
+int pvrdma_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
+ u16 *pkey)
+{
+ int err = 0;
+ union pvrdma_cmd_req req;
+ union pvrdma_cmd_resp rsp;
+ struct pvrdma_cmd_query_pkey *cmd = &req.query_pkey;
+
+ memset(cmd, 0, sizeof(*cmd));
+ cmd->hdr.cmd = PVRDMA_CMD_QUERY_PKEY;
+ cmd->port_num = port;
+ cmd->index = index;
+
+ err = pvrdma_cmd_post(to_vdev(ibdev), &req, &rsp,
+ PVRDMA_CMD_QUERY_PKEY_RESP);
+ if (err < 0) {
+ dev_warn(&to_vdev(ibdev)->pdev->dev,
+ "could not query pkey, error: %d\n", err);
+ return err;
+ }
+
+ *pkey = rsp.query_pkey_resp.pkey;
+
+ return 0;
+}
+
+enum rdma_link_layer pvrdma_port_link_layer(struct ib_device *ibdev,
+ u8 port)
+{
+ return IB_LINK_LAYER_ETHERNET;
+}
+
+int pvrdma_modify_device(struct ib_device *ibdev, int mask,
+ struct ib_device_modify *props)
+{
+ unsigned long flags;
+
+ if (mask & ~(IB_DEVICE_MODIFY_SYS_IMAGE_GUID |
+ IB_DEVICE_MODIFY_NODE_DESC)) {
+ dev_warn(&to_vdev(ibdev)->pdev->dev,
+ "unsupported device modify mask %#x\n", mask);
+ return -EOPNOTSUPP;
+ }
+
+ if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
+ spin_lock_irqsave(&to_vdev(ibdev)->desc_lock, flags);
+ memcpy(ibdev->node_desc, props->node_desc, 64);
+ spin_unlock_irqrestore(&to_vdev(ibdev)->desc_lock, flags);
+ }
+
+ if (mask & IB_DEVICE_MODIFY_SYS_IMAGE_GUID) {
+ mutex_lock(&to_vdev(ibdev)->port_mutex);
+ to_vdev(ibdev)->sys_image_guid =
+ cpu_to_be64(props->sys_image_guid);
+ mutex_unlock(&to_vdev(ibdev)->port_mutex);
+ }
+
+ return 0;
+}
+
+/**
+ * pvrdma_modify_port - modify device port attributes
+ * @ibdev: the device to modify
+ * @port: the port number
+ * @mask: attributes to modify
+ * @props: the device properties
+ *
+ * @return: 0 on success, otherwise negative errno
+ */
+int pvrdma_modify_port(struct ib_device *ibdev, u8 port, int mask,
+ struct ib_port_modify *props)
+{
+ struct ib_port_attr attr;
+ struct pvrdma_dev *vdev = to_vdev(ibdev);
+ int ret;
+
+ if (mask & ~IB_PORT_SHUTDOWN) {
+ dev_warn(&vdev->pdev->dev,
+ "unsupported port modify mask %#x\n", mask);
+ return -EOPNOTSUPP;
+ }
+
+ mutex_lock(&vdev->port_mutex);
+ ret = pvrdma_query_port(ibdev, port, &attr);
+ if (ret)
+ goto out;
+
+ vdev->port_cap_mask |= props->set_port_cap_mask;
+ vdev->port_cap_mask &= ~props->clr_port_cap_mask;
+
+ if (mask & IB_PORT_SHUTDOWN)
+ vdev->ib_active = false;
+
+out:
+ mutex_unlock(&vdev->port_mutex);
+ return ret;
+}
+
+/**
+ * pvrdma_alloc_ucontext - allocate ucontext
+ * @ibdev: the IB device
+ * @udata: user data
+ *
+ * @return: the ib_ucontext pointer on success, otherwise errno.
+ */
+struct ib_ucontext *pvrdma_alloc_ucontext(struct ib_device *ibdev,
+ struct ib_udata *udata)
+{
+ struct pvrdma_dev *vdev = to_vdev(ibdev);
+ struct pvrdma_ucontext *context;
+ union pvrdma_cmd_req req;
+ union pvrdma_cmd_resp rsp;
+ struct pvrdma_cmd_create_uc *cmd = &req.create_uc;
+ struct pvrdma_cmd_create_uc_resp *resp = &rsp.create_uc_resp;
+ struct pvrdma_alloc_ucontext_resp uresp;
+ int ret;
+ void *ptr;
+
+ if (!vdev->ib_active)
+ return ERR_PTR(-EAGAIN);
+
+ context = kmalloc(sizeof(*context), GFP_KERNEL);
+ if (!context)
+ return ERR_PTR(-ENOMEM);
+
+ context->dev = vdev;
+ ret = pvrdma_uar_alloc(vdev, &context->uar);
+ if (ret) {
+ kfree(context);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ /* get ctx_handle from host */
+ memset(cmd, 0, sizeof(*cmd));
+ cmd->pfn = context->uar.pfn;
+ cmd->hdr.cmd = PVRDMA_CMD_CREATE_UC;
+ ret = pvrdma_cmd_post(vdev, &req, &rsp, PVRDMA_CMD_CREATE_UC_RESP);
+ if (ret < 0) {
+ dev_warn(&vdev->pdev->dev,
+ "could not create ucontext, error: %d\n", ret);
+ ptr = ERR_PTR(ret);
+ goto err;
+ }
+
+ context->ctx_handle = resp->ctx_handle;
+
+ /* copy back to user */
+ uresp.qp_tab_size = vdev->dsr->caps.max_qp;
+ ret = ib_copy_to_udata(udata, &uresp, sizeof(uresp));
+ if (ret) {
+ pvrdma_uar_free(vdev, &context->uar);
+ context->ibucontext.device = ibdev;
+ pvrdma_dealloc_ucontext(&context->ibucontext);
+ return ERR_PTR(-EFAULT);
+ }
+
+ return &context->ibucontext;
+
+err:
+ pvrdma_uar_free(vdev, &context->uar);
+ kfree(context);
+ return ptr;
+}
+
+/**
+ * pvrdma_dealloc_ucontext - deallocate ucontext
+ * @ibcontext: the ucontext
+ *
+ * @return: 0 on success, otherwise errno.
+ */
+int pvrdma_dealloc_ucontext(struct ib_ucontext *ibcontext)
+{
+ struct pvrdma_ucontext *context = to_vucontext(ibcontext);
+ union pvrdma_cmd_req req;
+ struct pvrdma_cmd_destroy_uc *cmd = &req.destroy_uc;
+ int ret;
+
+ memset(cmd, 0, sizeof(*cmd));
+ cmd->hdr.cmd = PVRDMA_CMD_DESTROY_UC;
+ cmd->ctx_handle = context->ctx_handle;
+
+ ret = pvrdma_cmd_post(context->dev, &req, NULL, 0);
+ if (ret < 0)
+ dev_warn(&context->dev->pdev->dev,
+ "destroy ucontext failed, error: %d\n", ret);
+
+ /* Free the UAR even if the device command failed */
+ pvrdma_uar_free(to_vdev(ibcontext->device), &context->uar);
+ kfree(context);
+
+ return ret;
+}
+
+/**
+ * pvrdma_mmap - create mmap region
+ * @ibcontext: the user context
+ * @vma: the VMA
+ *
+ * @return: 0 on success, otherwise errno.
+ */
+int pvrdma_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vma)
+{
+ struct pvrdma_ucontext *context = to_vucontext(ibcontext);
+ unsigned long start = vma->vm_start;
+ unsigned long size = vma->vm_end - vma->vm_start;
+ unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
+
+ dev_dbg(&context->dev->pdev->dev, "create mmap region\n");
+
+ if ((size != PAGE_SIZE) || (offset & ~PAGE_MASK)) {
+ dev_warn(&context->dev->pdev->dev,
+ "invalid params for mmap region\n");
+ return -EINVAL;
+ }
+
+ /* Map UAR to kernel space, VM_LOCKED? */
+ vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND;
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+ if (io_remap_pfn_range(vma, start, context->uar.pfn, size,
+ vma->vm_page_prot))
+ return -EAGAIN;
+
+ return 0;
+}
+
+/**
+ * pvrdma_alloc_pd - allocate protection domain
+ * @ibdev: the IB device
+ * @context: user context
+ * @udata: user data
+ *
+ * @return: the ib_pd protection domain pointer on success, otherwise errno.
+ */
+struct ib_pd *pvrdma_alloc_pd(struct ib_device *ibdev,
+ struct ib_ucontext *context,
+ struct ib_udata *udata)
+{
+ struct pvrdma_pd *pd;
+ struct pvrdma_dev *dev = to_vdev(ibdev);
+ union pvrdma_cmd_req req;
+ union pvrdma_cmd_resp rsp;
+ struct pvrdma_cmd_create_pd *cmd = &req.create_pd;
+ struct pvrdma_cmd_create_pd_resp *resp = &rsp.create_pd_resp;
+ int ret;
+ void *ptr;
+
+ /* Check allowed max pds */
+ if (!atomic_add_unless(&dev->num_pds, 1, dev->dsr->caps.max_pd))
+ return ERR_PTR(-ENOMEM);
+
+ pd = kmalloc(sizeof(*pd), GFP_KERNEL);
+ if (!pd) {
+ ptr = ERR_PTR(-ENOMEM);
+ goto err;
+ }
+
+ memset(cmd, 0, sizeof(*cmd));
+ cmd->hdr.cmd = PVRDMA_CMD_CREATE_PD;
+ cmd->ctx_handle = (context) ? to_vucontext(context)->ctx_handle : 0;
+ ret = pvrdma_cmd_post(dev, &req, &rsp, PVRDMA_CMD_CREATE_PD_RESP);
+ if (ret < 0) {
+ dev_warn(&dev->pdev->dev,
+ "failed to allocate protection domain, error: %d\n",
+ ret);
+ ptr = ERR_PTR(ret);
+ goto freepd;
+ }
+
+ pd->privileged = !context;
+ pd->pd_handle = resp->pd_handle;
+ pd->pdn = resp->pd_handle;
+
+ if (context) {
+ if (ib_copy_to_udata(udata, &pd->pdn, sizeof(__u32))) {
+ dev_warn(&dev->pdev->dev,
+ "failed to copy back protection domain\n");
+ pvrdma_dealloc_pd(&pd->ibpd);
+ return ERR_PTR(-EFAULT);
+ }
+ }
+
+ /* u32 pd handle */
+ return &pd->ibpd;
+
+freepd:
+ kfree(pd);
+err:
+ atomic_dec(&dev->num_pds);
+ return ptr;
+}
+
+/**
+ * pvrdma_dealloc_pd - deallocate protection domain
+ * @pd: the protection domain to be released
+ *
+ * @return: 0 on success, otherwise errno.
+ */
+int pvrdma_dealloc_pd(struct ib_pd *pd)
+{
+ struct pvrdma_dev *dev = to_vdev(pd->device);
+ union pvrdma_cmd_req req;
+ struct pvrdma_cmd_destroy_pd *cmd = &req.destroy_pd;
+ int ret;
+
+ memset(cmd, 0, sizeof(*cmd));
+ cmd->hdr.cmd = PVRDMA_CMD_DESTROY_PD;
+ cmd->pd_handle = to_vpd(pd)->pd_handle;
+
+ ret = pvrdma_cmd_post(dev, &req, NULL, 0);
+ if (ret)
+ dev_warn(&dev->pdev->dev,
+ "could not dealloc protection domain, error: %d\n",
+ ret);
+
+ kfree(to_vpd(pd));
+ atomic_dec(&dev->num_pds);
+
+ return 0;
+}
+
+/**
+ * pvrdma_create_ah - create an address handle
+ * @pd: the protection domain
+ * @ah_attr: the attributes of the AH
+ *
+ * @return: the ib_ah pointer on success, otherwise errno.
+ */
+struct ib_ah *pvrdma_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
+{
+ struct pvrdma_dev *dev = to_vdev(pd->device);
+ struct pvrdma_ah *ah;
+ enum rdma_link_layer ll;
+
+ if (!(ah_attr->ah_flags & IB_AH_GRH))
+ return ERR_PTR(-EINVAL);
+
+ ll = rdma_port_get_link_layer(pd->device, ah_attr->port_num);
+
+ if (ll != IB_LINK_LAYER_ETHERNET ||
+ rdma_is_multicast_addr((struct in6_addr *)ah_attr->grh.dgid.raw))
+ return ERR_PTR(-EINVAL);
+
+ if (!atomic_add_unless(&dev->num_ahs, 1, dev->dsr->caps.max_ah))
+ return ERR_PTR(-ENOMEM);
+
+ ah = kzalloc(sizeof(*ah), GFP_KERNEL);
+ if (!ah) {
+ atomic_dec(&dev->num_ahs);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ ah->av.port_pd = to_vpd(pd)->pd_handle | (ah_attr->port_num << 24);
+ ah->av.src_path_bits = ah_attr->src_path_bits;
+ ah->av.src_path_bits |= 0x80;
+ ah->av.gid_index = ah_attr->grh.sgid_index;
+ ah->av.hop_limit = ah_attr->grh.hop_limit;
+ ah->av.sl_tclass_flowlabel = (ah_attr->grh.traffic_class << 20) |
+ ah_attr->grh.flow_label;
+ memcpy(ah->av.dgid, ah_attr->grh.dgid.raw, 16);
+ memcpy(ah->av.dmac, ah_attr->dmac, 6);
+
+ ah->ibah.device = pd->device;
+ ah->ibah.pd = pd;
+ ah->ibah.uobject = NULL;
+
+ return &ah->ibah;
+}
+
+/**
+ * pvrdma_destroy_ah - destroy an address handle
+ * @ah: the address handle to destroyed
+ *
+ * @return: 0 on success.
+ */
+int pvrdma_destroy_ah(struct ib_ah *ah)
+{
+ struct pvrdma_dev *dev = to_vdev(ah->device);
+
+ kfree(to_vah(ah));
+ atomic_dec(&dev->num_ahs);
+
+ return 0;
+}
diff --git a/drivers/infiniband/hw/pvrdma/pvrdma_verbs.h b/drivers/infiniband/hw/pvrdma/pvrdma_verbs.h
new file mode 100644
index 0000000..e52fbe5
--- /dev/null
+++ b/drivers/infiniband/hw/pvrdma/pvrdma_verbs.h
@@ -0,0 +1,108 @@
+/*
+ * Copyright (c) 2012-2016 VMware, Inc. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of EITHER the GNU General Public License
+ * version 2 as published by the Free Software Foundation or the BSD
+ * 2-Clause License. This program is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License version 2 for more details at
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program available in the file COPYING in the main
+ * directory of this source tree.
+ *
+ * The BSD 2-Clause License
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __PVRDMA_VERBS_H__
+#define __PVRDMA_VERBS_H__
+
+int pvrdma_query_device(struct ib_device *ibdev,
+ struct ib_device_attr *props,
+ struct ib_udata *udata);
+int pvrdma_query_port(struct ib_device *ibdev, u8 port,
+ struct ib_port_attr *props);
+int pvrdma_query_gid(struct ib_device *ibdev, u8 port,
+ int index, union ib_gid *gid);
+int pvrdma_query_pkey(struct ib_device *ibdev, u8 port,
+ u16 index, u16 *pkey);
+enum rdma_link_layer pvrdma_port_link_layer(struct ib_device *ibdev,
+ u8 port);
+int pvrdma_modify_device(struct ib_device *ibdev, int mask,
+ struct ib_device_modify *props);
+int pvrdma_modify_port(struct ib_device *ibdev, u8 port,
+ int mask, struct ib_port_modify *props);
+int pvrdma_mmap(struct ib_ucontext *context, struct vm_area_struct *vma);
+struct ib_ucontext *pvrdma_alloc_ucontext(struct ib_device *ibdev,
+ struct ib_udata *udata);
+int pvrdma_dealloc_ucontext(struct ib_ucontext *context);
+struct ib_pd *pvrdma_alloc_pd(struct ib_device *ibdev,
+ struct ib_ucontext *context,
+ struct ib_udata *udata);
+int pvrdma_dealloc_pd(struct ib_pd *ibpd);
+struct ib_mr *pvrdma_get_dma_mr(struct ib_pd *pd, int acc);
+struct ib_mr *pvrdma_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
+ u64 virt_addr, int access_flags,
+ struct ib_udata *udata);
+int pvrdma_dereg_mr(struct ib_mr *mr);
+struct ib_mr *pvrdma_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type,
+ u32 max_num_sg);
+int pvrdma_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
+ int sg_nents, unsigned int *sg_offset);
+int pvrdma_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
+int pvrdma_resize_cq(struct ib_cq *ibcq, int entries,
+ struct ib_udata *udata);
+struct ib_cq *pvrdma_create_cq(struct ib_device *ibdev,
+ const struct ib_cq_init_attr *attr,
+ struct ib_ucontext *context,
+ struct ib_udata *udata);
+int pvrdma_resize_cq(struct ib_cq *ibcq, int entries,
+ struct ib_udata *udata);
+int pvrdma_destroy_cq(struct ib_cq *cq);
+int pvrdma_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
+int pvrdma_req_notify_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
+struct ib_ah *pvrdma_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
+int pvrdma_destroy_ah(struct ib_ah *ah);
+struct ib_qp *pvrdma_create_qp(struct ib_pd *pd,
+ struct ib_qp_init_attr *init_attr,
+ struct ib_udata *udata);
+int pvrdma_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
+ int attr_mask, struct ib_udata *udata);
+int pvrdma_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
+ int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr);
+int pvrdma_destroy_qp(struct ib_qp *qp);
+int pvrdma_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
+ struct ib_send_wr **bad_wr);
+int pvrdma_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
+ struct ib_recv_wr **bad_wr);
+
+#endif /* __PVRDMA_VERBS_H__ */
--
2.7.4
^ permalink raw reply related
* [PATCH v5 06/16] IB/pvrdma: Add paravirtual rdma device
From: Adit Ranadive @ 2016-09-24 23:21 UTC (permalink / raw)
To: dledford, linux-rdma, pv-drivers
Cc: Adit Ranadive, netdev, linux-pci, jhansen, asarwade, georgezhang,
bryantan
In-Reply-To: <cover.1474759181.git.aditr@vmware.com>
This patch adds the main device-level structures and functions to be used
to provide RDMA functionality. Also, we define conversion functions from
the IB core stack structures to the device-specific ones.
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Jorgen Hansen <jhansen@vmware.com>
Reviewed-by: George Zhang <georgezhang@vmware.com>
Reviewed-by: Aditya Sarwade <asarwade@vmware.com>
Reviewed-by: Bryan Tan <bryantan@vmware.com>
Signed-off-by: Adit Ranadive <aditr@vmware.com>
---
Changes v4->v5:
- pvrdma_cmd_post takes the response code.
Changes v3->v4:
- Renamed pvrdma_flush_cqe to _pvrdma_flush_cqe since we hold a lock
to call it.
- Added wrapper functions for writing to UARs for CQ/QP.
- The conversion functions are updated as func_name(dst, src) format.
- Renamed max_gs to max_sg.
- Added work struct for net device events.
- priviledged -> privileged.
Changes v2->v3:
- Removed VMware vendor id redefinition.
- Removed the boolean in pvrdma_cmd_post.
---
drivers/infiniband/hw/pvrdma/pvrdma.h | 473 ++++++++++++++++++++++++++++++++++
1 file changed, 473 insertions(+)
create mode 100644 drivers/infiniband/hw/pvrdma/pvrdma.h
diff --git a/drivers/infiniband/hw/pvrdma/pvrdma.h b/drivers/infiniband/hw/pvrdma/pvrdma.h
new file mode 100644
index 0000000..8073ffc
--- /dev/null
+++ b/drivers/infiniband/hw/pvrdma/pvrdma.h
@@ -0,0 +1,473 @@
+/*
+ * Copyright (c) 2012-2016 VMware, Inc. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of EITHER the GNU General Public License
+ * version 2 as published by the Free Software Foundation or the BSD
+ * 2-Clause License. This program is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License version 2 for more details at
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program available in the file COPYING in the main
+ * directory of this source tree.
+ *
+ * The BSD 2-Clause License
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __PVRDMA_H__
+#define __PVRDMA_H__
+
+#include <linux/compiler.h>
+#include <linux/interrupt.h>
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/pci.h>
+#include <linux/semaphore.h>
+#include <linux/workqueue.h>
+#include <rdma/ib_umem.h>
+#include <rdma/ib_verbs.h>
+
+#include "pvrdma_defs.h"
+#include "pvrdma_dev_api.h"
+#include "pvrdma_verbs.h"
+
+/* NOT the same as BIT_MASK(). */
+#define PVRDMA_MASK(n) ((n << 1) - 1)
+
+/*
+ * VMware PVRDMA PCI device id.
+ */
+#define PCI_DEVICE_ID_VMWARE_PVRDMA 0x0820
+
+struct pvrdma_dev;
+
+struct pvrdma_page_dir {
+ dma_addr_t dir_dma;
+ u64 *dir;
+ int ntables;
+ u64 **tables;
+ u64 npages;
+ void **pages;
+};
+
+struct pvrdma_cq {
+ struct ib_cq ibcq;
+ int offset;
+ spinlock_t cq_lock; /* Poll lock. */
+ struct pvrdma_uar_map *uar;
+ struct ib_umem *umem;
+ struct pvrdma_ring_state *ring_state;
+ struct pvrdma_page_dir pdir;
+ u32 cq_handle;
+ bool is_kernel;
+ atomic_t refcnt;
+ wait_queue_head_t wait;
+};
+
+struct pvrdma_id_table {
+ u32 last;
+ u32 top;
+ u32 max;
+ u32 mask;
+ spinlock_t lock; /* Table lock. */
+ unsigned long *table;
+};
+
+struct pvrdma_uar_map {
+ unsigned long pfn;
+ void __iomem *map;
+ int index;
+};
+
+struct pvrdma_uar_table {
+ struct pvrdma_id_table tbl;
+ int size;
+};
+
+struct pvrdma_ucontext {
+ struct ib_ucontext ibucontext;
+ struct pvrdma_dev *dev;
+ struct pvrdma_uar_map uar;
+ u64 ctx_handle;
+};
+
+struct pvrdma_pd {
+ struct ib_pd ibpd;
+ u32 pdn;
+ u32 pd_handle;
+ int privileged;
+};
+
+struct pvrdma_mr {
+ u32 mr_handle;
+ u64 iova;
+ u64 size;
+};
+
+struct pvrdma_user_mr {
+ struct ib_mr ibmr;
+ struct ib_umem *umem;
+ struct pvrdma_mr mmr;
+ struct pvrdma_page_dir pdir;
+ u64 *pages;
+ u32 npages;
+ u32 max_pages;
+ u32 page_shift;
+};
+
+struct pvrdma_wq {
+ struct pvrdma_ring *ring;
+ spinlock_t lock; /* Work queue lock. */
+ int wqe_cnt;
+ int wqe_size;
+ int max_sg;
+ int offset;
+};
+
+struct pvrdma_ah {
+ struct ib_ah ibah;
+ struct pvrdma_av av;
+};
+
+struct pvrdma_qp {
+ struct ib_qp ibqp;
+ u32 qp_handle;
+ u32 qkey;
+ struct pvrdma_wq sq;
+ struct pvrdma_wq rq;
+ struct ib_umem *rumem;
+ struct ib_umem *sumem;
+ struct pvrdma_page_dir pdir;
+ int npages;
+ int npages_send;
+ int npages_recv;
+ u32 flags;
+ u8 port;
+ u8 state;
+ bool is_kernel;
+ struct mutex mutex; /* QP state mutex. */
+ atomic_t refcnt;
+ wait_queue_head_t wait;
+};
+
+struct pvrdma_dev {
+ /* PCI device-related information. */
+ struct ib_device ib_dev;
+ struct pci_dev *pdev;
+ void __iomem *regs;
+ struct pvrdma_device_shared_region *dsr; /* Shared region pointer */
+ dma_addr_t dsrbase; /* Shared region base address */
+ void *cmd_slot;
+ void *resp_slot;
+ unsigned long flags;
+ struct list_head device_link;
+
+ /* Locking and interrupt information. */
+ spinlock_t cmd_lock; /* Command lock. */
+ struct semaphore cmd_sema;
+ struct completion cmd_done;
+ struct {
+ enum pvrdma_intr_type type; /* Intr type */
+ struct msix_entry msix_entry[PVRDMA_MAX_INTERRUPTS];
+ irq_handler_t handler[PVRDMA_MAX_INTERRUPTS];
+ u8 enabled[PVRDMA_MAX_INTERRUPTS];
+ u8 size;
+ } intr;
+
+ /* RDMA-related device information. */
+ union ib_gid *sgid_tbl;
+ struct pvrdma_ring_state *async_ring_state;
+ struct pvrdma_page_dir async_pdir;
+ struct pvrdma_ring_state *cq_ring_state;
+ struct pvrdma_page_dir cq_pdir;
+ struct pvrdma_cq **cq_tbl;
+ spinlock_t cq_tbl_lock;
+ struct pvrdma_qp **qp_tbl;
+ spinlock_t qp_tbl_lock;
+ struct pvrdma_uar_table uar_table;
+ struct pvrdma_uar_map driver_uar;
+ __be64 sys_image_guid;
+ spinlock_t desc_lock; /* Device modification lock. */
+ u32 port_cap_mask;
+ struct mutex port_mutex; /* Port modification mutex. */
+ bool ib_active;
+ atomic_t num_qps;
+ atomic_t num_cqs;
+ atomic_t num_pds;
+ atomic_t num_ahs;
+
+ /* Network device information. */
+ struct net_device *netdev;
+ struct notifier_block nb_netdev;
+};
+
+struct pvrdma_netdevice_work {
+ struct work_struct work;
+ struct net_device *event_netdev;
+ unsigned long event;
+};
+
+static inline struct pvrdma_dev *to_vdev(struct ib_device *ibdev)
+{
+ return container_of(ibdev, struct pvrdma_dev, ib_dev);
+}
+
+static inline struct
+pvrdma_ucontext *to_vucontext(struct ib_ucontext *ibucontext)
+{
+ return container_of(ibucontext, struct pvrdma_ucontext, ibucontext);
+}
+
+static inline struct pvrdma_pd *to_vpd(struct ib_pd *ibpd)
+{
+ return container_of(ibpd, struct pvrdma_pd, ibpd);
+}
+
+static inline struct pvrdma_cq *to_vcq(struct ib_cq *ibcq)
+{
+ return container_of(ibcq, struct pvrdma_cq, ibcq);
+}
+
+static inline struct pvrdma_user_mr *to_vmr(struct ib_mr *ibmr)
+{
+ return container_of(ibmr, struct pvrdma_user_mr, ibmr);
+}
+
+static inline struct pvrdma_qp *to_vqp(struct ib_qp *ibqp)
+{
+ return container_of(ibqp, struct pvrdma_qp, ibqp);
+}
+
+static inline struct pvrdma_ah *to_vah(struct ib_ah *ibah)
+{
+ return container_of(ibah, struct pvrdma_ah, ibah);
+}
+
+static inline void pvrdma_write_reg(struct pvrdma_dev *dev, u32 reg, u32 val)
+{
+ writel(cpu_to_le32(val), dev->regs + reg);
+}
+
+static inline u32 pvrdma_read_reg(struct pvrdma_dev *dev, u32 reg)
+{
+ return le32_to_cpu(readl(dev->regs + reg));
+}
+
+static inline void pvrdma_write_uar_cq(struct pvrdma_dev *dev, u32 val)
+{
+ writel(cpu_to_le32(val), dev->driver_uar.map + PVRDMA_UAR_CQ_OFFSET);
+}
+
+static inline void pvrdma_write_uar_qp(struct pvrdma_dev *dev, u32 val)
+{
+ writel(cpu_to_le32(val), dev->driver_uar.map + PVRDMA_UAR_QP_OFFSET);
+}
+
+static inline void *pvrdma_page_dir_get_ptr(struct pvrdma_page_dir *pdir,
+ u64 offset)
+{
+ return pdir->pages[offset / PAGE_SIZE] + (offset % PAGE_SIZE);
+}
+
+static inline enum pvrdma_mtu ib_mtu_to_pvrdma(enum ib_mtu mtu)
+{
+ return (enum pvrdma_mtu)mtu;
+}
+
+static inline enum ib_mtu pvrdma_mtu_to_ib(enum pvrdma_mtu mtu)
+{
+ return (enum ib_mtu)mtu;
+}
+
+static inline enum pvrdma_port_state ib_port_state_to_pvrdma(
+ enum ib_port_state state)
+{
+ return (enum pvrdma_port_state)state;
+}
+
+static inline enum ib_port_state pvrdma_port_state_to_ib(
+ enum pvrdma_port_state state)
+{
+ return (enum ib_port_state)state;
+}
+
+static inline int ib_port_cap_flags_to_pvrdma(int flags)
+{
+ return flags & PVRDMA_MASK(PVRDMA_PORT_CAP_FLAGS_MAX);
+}
+
+static inline int pvrdma_port_cap_flags_to_ib(int flags)
+{
+ return flags;
+}
+
+static inline enum pvrdma_port_width ib_port_width_to_pvrdma(
+ enum ib_port_width width)
+{
+ return (enum pvrdma_port_width)width;
+}
+
+static inline enum ib_port_width pvrdma_port_width_to_ib(
+ enum pvrdma_port_width width)
+{
+ return (enum ib_port_width)width;
+}
+
+static inline enum pvrdma_port_speed ib_port_speed_to_pvrdma(
+ enum ib_port_speed speed)
+{
+ return (enum pvrdma_port_speed)speed;
+}
+
+static inline enum ib_port_speed pvrdma_port_speed_to_ib(
+ enum pvrdma_port_speed speed)
+{
+ return (enum ib_port_speed)speed;
+}
+
+static inline int pvrdma_qp_attr_mask_to_ib(int attr_mask)
+{
+ return attr_mask;
+}
+
+static inline int ib_qp_attr_mask_to_pvrdma(int attr_mask)
+{
+ return attr_mask & PVRDMA_MASK(PVRDMA_QP_ATTR_MASK_MAX);
+}
+
+static inline enum pvrdma_mig_state ib_mig_state_to_pvrdma(
+ enum ib_mig_state state)
+{
+ return (enum pvrdma_mig_state)state;
+}
+
+static inline enum ib_mig_state pvrdma_mig_state_to_ib(
+ enum pvrdma_mig_state state)
+{
+ return (enum ib_mig_state)state;
+}
+
+static inline int ib_access_flags_to_pvrdma(int flags)
+{
+ return flags;
+}
+
+static inline int pvrdma_access_flags_to_ib(int flags)
+{
+ return flags & PVRDMA_MASK(PVRDMA_ACCESS_FLAGS_MAX);
+}
+
+static inline enum pvrdma_qp_type ib_qp_type_to_pvrdma(enum ib_qp_type type)
+{
+ return (enum pvrdma_qp_type)type;
+}
+
+static inline enum ib_qp_type pvrdma_qp_type_to_ib(enum pvrdma_qp_type type)
+{
+ return (enum ib_qp_type)type;
+}
+
+static inline enum pvrdma_qp_state ib_qp_state_to_pvrdma(enum ib_qp_state state)
+{
+ return (enum pvrdma_qp_state)state;
+}
+
+static inline enum ib_qp_state pvrdma_qp_state_to_ib(enum pvrdma_qp_state state)
+{
+ return (enum ib_qp_state)state;
+}
+
+static inline enum pvrdma_wr_opcode ib_wr_opcode_to_pvrdma(enum ib_wr_opcode op)
+{
+ return (enum pvrdma_wr_opcode)op;
+}
+
+static inline enum ib_wc_status pvrdma_wc_status_to_ib(
+ enum pvrdma_wc_status status)
+{
+ return (enum ib_wc_status)status;
+}
+
+static inline int pvrdma_wc_opcode_to_ib(int opcode)
+{
+ return opcode;
+}
+
+static inline int pvrdma_wc_flags_to_ib(int flags)
+{
+ return flags;
+}
+
+static inline int ib_send_flags_to_pvrdma(int flags)
+{
+ return flags & PVRDMA_MASK(PVRDMA_SEND_FLAGS_MAX);
+}
+
+void pvrdma_qp_cap_to_ib(struct ib_qp_cap *dst,
+ const struct pvrdma_qp_cap *src);
+void ib_qp_cap_to_pvrdma(struct pvrdma_qp_cap *dst,
+ const struct ib_qp_cap *src);
+void pvrdma_gid_to_ib(union ib_gid *dst, const union pvrdma_gid *src);
+void ib_gid_to_pvrdma(union pvrdma_gid *dst, const union ib_gid *src);
+void pvrdma_global_route_to_ib(struct ib_global_route *dst,
+ const struct pvrdma_global_route *src);
+void ib_global_route_to_pvrdma(struct pvrdma_global_route *dst,
+ const struct ib_global_route *src);
+void pvrdma_ah_attr_to_ib(struct ib_ah_attr *dst,
+ const struct pvrdma_ah_attr *src);
+void ib_ah_attr_to_pvrdma(struct pvrdma_ah_attr *dst,
+ const struct ib_ah_attr *src);
+
+int pvrdma_uar_table_init(struct pvrdma_dev *dev);
+void pvrdma_uar_table_cleanup(struct pvrdma_dev *dev);
+
+int pvrdma_uar_alloc(struct pvrdma_dev *dev, struct pvrdma_uar_map *uar);
+void pvrdma_uar_free(struct pvrdma_dev *dev, struct pvrdma_uar_map *uar);
+
+void _pvrdma_flush_cqe(struct pvrdma_qp *qp, struct pvrdma_cq *cq);
+
+int pvrdma_page_dir_init(struct pvrdma_dev *dev, struct pvrdma_page_dir *pdir,
+ u64 npages, bool alloc_pages);
+void pvrdma_page_dir_cleanup(struct pvrdma_dev *dev,
+ struct pvrdma_page_dir *pdir);
+int pvrdma_page_dir_insert_dma(struct pvrdma_page_dir *pdir, u64 idx,
+ dma_addr_t daddr);
+int pvrdma_page_dir_insert_umem(struct pvrdma_page_dir *pdir,
+ struct ib_umem *umem, u64 offset);
+dma_addr_t pvrdma_page_dir_get_dma(struct pvrdma_page_dir *pdir, u64 idx);
+int pvrdma_page_dir_insert_page_list(struct pvrdma_page_dir *pdir,
+ u64 *page_list, int num_pages);
+
+int pvrdma_cmd_post(struct pvrdma_dev *dev, union pvrdma_cmd_req *req,
+ union pvrdma_cmd_resp *rsp, unsigned resp_code);
+
+#endif /* __PVRDMA_H__ */
--
2.7.4
^ permalink raw reply related
* [PATCH v5 07/16] IB/pvrdma: Add helper functions
From: Adit Ranadive @ 2016-09-24 23:21 UTC (permalink / raw)
To: dledford-H+wXaHxf7aLQT0dZR+AlfA,
linux-rdma-u79uwXL29TY76Z2rM5mHXA,
pv-drivers-pghWNbHTmq7QT0dZR+AlfA
Cc: Adit Ranadive, netdev-u79uwXL29TY76Z2rM5mHXA,
linux-pci-u79uwXL29TY76Z2rM5mHXA, jhansen-pghWNbHTmq7QT0dZR+AlfA,
asarwade-pghWNbHTmq7QT0dZR+AlfA,
georgezhang-pghWNbHTmq7QT0dZR+AlfA,
bryantan-pghWNbHTmq7QT0dZR+AlfA
In-Reply-To: <cover.1474759181.git.aditr-pghWNbHTmq7QT0dZR+AlfA@public.gmane.org>
This patch adds helper functions to store guest page addresses in a page
directory structure. The page directory pointer is passed down to the
backend which then maps the entire memory for the RDMA object by
traversing the directory. We add some more helper functions for converting
to/from RDMA stack address handles from/to PVRDMA ones.
Reviewed-by: Yuval Shaia <yuval.shaia-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
Reviewed-by: Jorgen Hansen <jhansen-pghWNbHTmq7QT0dZR+AlfA@public.gmane.org>
Reviewed-by: George Zhang <georgezhang-pghWNbHTmq7QT0dZR+AlfA@public.gmane.org>
Reviewed-by: Aditya Sarwade <asarwade-pghWNbHTmq7QT0dZR+AlfA@public.gmane.org>
Reviewed-by: Bryan Tan <bryantan-pghWNbHTmq7QT0dZR+AlfA@public.gmane.org>
Signed-off-by: Adit Ranadive <aditr-pghWNbHTmq7QT0dZR+AlfA@public.gmane.org>
---
Changes v4->v5:
- Correct var type passed to dma_alloc_coherent.
Changes v3->v4:
- Updated conversion functions to func_name(dst, src) format.
- Removed unneeded local variables.
---
drivers/infiniband/hw/pvrdma/pvrdma_misc.c | 304 +++++++++++++++++++++++++++++
1 file changed, 304 insertions(+)
create mode 100644 drivers/infiniband/hw/pvrdma/pvrdma_misc.c
diff --git a/drivers/infiniband/hw/pvrdma/pvrdma_misc.c b/drivers/infiniband/hw/pvrdma/pvrdma_misc.c
new file mode 100644
index 0000000..948b5cc
--- /dev/null
+++ b/drivers/infiniband/hw/pvrdma/pvrdma_misc.c
@@ -0,0 +1,304 @@
+/*
+ * Copyright (c) 2012-2016 VMware, Inc. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of EITHER the GNU General Public License
+ * version 2 as published by the Free Software Foundation or the BSD
+ * 2-Clause License. This program is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License version 2 for more details at
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program available in the file COPYING in the main
+ * directory of this source tree.
+ *
+ * The BSD 2-Clause License
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/bitmap.h>
+
+#include "pvrdma.h"
+
+int pvrdma_page_dir_init(struct pvrdma_dev *dev, struct pvrdma_page_dir *pdir,
+ u64 npages, bool alloc_pages)
+{
+ u64 i;
+
+ if (npages > PVRDMA_PAGE_DIR_MAX_PAGES)
+ return -EINVAL;
+
+ memset(pdir, 0, sizeof(*pdir));
+
+ pdir->dir = dma_alloc_coherent(&dev->pdev->dev, PAGE_SIZE,
+ &pdir->dir_dma, GFP_KERNEL);
+ if (!pdir->dir)
+ goto err;
+
+ pdir->ntables = PVRDMA_PAGE_DIR_TABLE(npages - 1) + 1;
+ pdir->tables = kcalloc(pdir->ntables, sizeof(*pdir->tables),
+ GFP_KERNEL);
+ if (!pdir->tables)
+ goto err;
+
+ for (i = 0; i < pdir->ntables; i++) {
+ pdir->tables[i] = dma_alloc_coherent(&dev->pdev->dev, PAGE_SIZE,
+ (dma_addr_t *)&pdir->dir[i],
+ GFP_KERNEL);
+ if (!pdir->tables[i])
+ goto err;
+ }
+
+ pdir->npages = npages;
+
+ if (alloc_pages) {
+ pdir->pages = kcalloc(npages, sizeof(*pdir->pages),
+ GFP_KERNEL);
+ if (!pdir->pages)
+ goto err;
+
+ for (i = 0; i < pdir->npages; i++) {
+ dma_addr_t page_dma;
+
+ pdir->pages[i] = dma_alloc_coherent(&dev->pdev->dev,
+ PAGE_SIZE,
+ &page_dma,
+ GFP_KERNEL);
+ if (!pdir->pages[i])
+ goto err;
+
+ pvrdma_page_dir_insert_dma(pdir, i, page_dma);
+ }
+ }
+
+ return 0;
+
+err:
+ pvrdma_page_dir_cleanup(dev, pdir);
+
+ return -ENOMEM;
+}
+
+static u64 *pvrdma_page_dir_table(struct pvrdma_page_dir *pdir, u64 idx)
+{
+ return pdir->tables[PVRDMA_PAGE_DIR_TABLE(idx)];
+}
+
+dma_addr_t pvrdma_page_dir_get_dma(struct pvrdma_page_dir *pdir, u64 idx)
+{
+ return pvrdma_page_dir_table(pdir, idx)[PVRDMA_PAGE_DIR_PAGE(idx)];
+}
+
+static void pvrdma_page_dir_cleanup_pages(struct pvrdma_dev *dev,
+ struct pvrdma_page_dir *pdir)
+{
+ if (pdir->pages) {
+ u64 i;
+
+ for (i = 0; i < pdir->npages && pdir->pages[i]; i++) {
+ dma_addr_t page_dma = pvrdma_page_dir_get_dma(pdir, i);
+
+ dma_free_coherent(&dev->pdev->dev, PAGE_SIZE,
+ pdir->pages[i], page_dma);
+ }
+
+ kfree(pdir->pages);
+ }
+}
+
+static void pvrdma_page_dir_cleanup_tables(struct pvrdma_dev *dev,
+ struct pvrdma_page_dir *pdir)
+{
+ if (pdir->tables) {
+ int i;
+
+ pvrdma_page_dir_cleanup_pages(dev, pdir);
+
+ for (i = 0; i < pdir->ntables; i++) {
+ u64 *table = pdir->tables[i];
+
+ if (table)
+ dma_free_coherent(&dev->pdev->dev, PAGE_SIZE,
+ table, pdir->dir[i]);
+ }
+
+ kfree(pdir->tables);
+ }
+}
+
+void pvrdma_page_dir_cleanup(struct pvrdma_dev *dev,
+ struct pvrdma_page_dir *pdir)
+{
+ if (pdir->dir) {
+ pvrdma_page_dir_cleanup_tables(dev, pdir);
+ dma_free_coherent(&dev->pdev->dev, PAGE_SIZE,
+ pdir->dir, pdir->dir_dma);
+ }
+}
+
+int pvrdma_page_dir_insert_dma(struct pvrdma_page_dir *pdir, u64 idx,
+ dma_addr_t daddr)
+{
+ u64 *table;
+
+ if (idx >= pdir->npages)
+ return -EINVAL;
+
+ table = pvrdma_page_dir_table(pdir, idx);
+ table[PVRDMA_PAGE_DIR_PAGE(idx)] = daddr;
+
+ return 0;
+}
+
+int pvrdma_page_dir_insert_umem(struct pvrdma_page_dir *pdir,
+ struct ib_umem *umem, u64 offset)
+{
+ u64 i = offset;
+ int j, entry;
+ int ret = 0, len = 0;
+ struct scatterlist *sg;
+
+ if (offset >= pdir->npages)
+ return -EINVAL;
+
+ for_each_sg(umem->sg_head.sgl, sg, umem->nmap, entry) {
+ len = sg_dma_len(sg) >> PAGE_SHIFT;
+ for (j = 0; j < len; j++) {
+ dma_addr_t addr = sg_dma_address(sg) +
+ umem->page_size * j;
+
+ ret = pvrdma_page_dir_insert_dma(pdir, i, addr);
+ if (ret)
+ goto exit;
+
+ i++;
+ }
+ }
+
+exit:
+ return ret;
+}
+
+int pvrdma_page_dir_insert_page_list(struct pvrdma_page_dir *pdir,
+ u64 *page_list,
+ int num_pages)
+{
+ int i;
+ int ret;
+
+ if (num_pages > pdir->npages)
+ return -EINVAL;
+
+ for (i = 0; i < num_pages; i++) {
+ ret = pvrdma_page_dir_insert_dma(pdir, i, page_list[i]);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+void pvrdma_qp_cap_to_ib(struct ib_qp_cap *dst, const struct pvrdma_qp_cap *src)
+{
+ dst->max_send_wr = src->max_send_wr;
+ dst->max_recv_wr = src->max_recv_wr;
+ dst->max_send_sge = src->max_send_sge;
+ dst->max_recv_sge = src->max_recv_sge;
+ dst->max_inline_data = src->max_inline_data;
+}
+
+void ib_qp_cap_to_pvrdma(struct pvrdma_qp_cap *dst, const struct ib_qp_cap *src)
+{
+ dst->max_send_wr = src->max_send_wr;
+ dst->max_recv_wr = src->max_recv_wr;
+ dst->max_send_sge = src->max_send_sge;
+ dst->max_recv_sge = src->max_recv_sge;
+ dst->max_inline_data = src->max_inline_data;
+}
+
+void pvrdma_gid_to_ib(union ib_gid *dst, const union pvrdma_gid *src)
+{
+ BUILD_BUG_ON(sizeof(union pvrdma_gid) != sizeof(union ib_gid));
+ memcpy(dst, src, sizeof(*src));
+}
+
+void ib_gid_to_pvrdma(union pvrdma_gid *dst, const union ib_gid *src)
+{
+ BUILD_BUG_ON(sizeof(union pvrdma_gid) != sizeof(union ib_gid));
+ memcpy(dst, src, sizeof(*src));
+}
+
+void pvrdma_global_route_to_ib(struct ib_global_route *dst,
+ const struct pvrdma_global_route *src)
+{
+ pvrdma_gid_to_ib(&dst->dgid, &src->dgid);
+ dst->flow_label = src->flow_label;
+ dst->sgid_index = src->sgid_index;
+ dst->hop_limit = src->hop_limit;
+ dst->traffic_class = src->traffic_class;
+}
+
+void ib_global_route_to_pvrdma(struct pvrdma_global_route *dst,
+ const struct ib_global_route *src)
+{
+ ib_gid_to_pvrdma(&dst->dgid, &src->dgid);
+ dst->flow_label = src->flow_label;
+ dst->sgid_index = src->sgid_index;
+ dst->hop_limit = src->hop_limit;
+ dst->traffic_class = src->traffic_class;
+}
+
+void pvrdma_ah_attr_to_ib(struct ib_ah_attr *dst,
+ const struct pvrdma_ah_attr *src)
+{
+ pvrdma_global_route_to_ib(&dst->grh, &src->grh);
+ dst->dlid = src->dlid;
+ dst->sl = src->sl;
+ dst->src_path_bits = src->src_path_bits;
+ dst->static_rate = src->static_rate;
+ dst->ah_flags = src->ah_flags;
+ dst->port_num = src->port_num;
+ memcpy(&dst->dmac, &src->dmac, sizeof(dst->dmac));
+}
+
+void ib_ah_attr_to_pvrdma(struct pvrdma_ah_attr *dst,
+ const struct ib_ah_attr *src)
+{
+ ib_global_route_to_pvrdma(&dst->grh, &src->grh);
+ dst->dlid = src->dlid;
+ dst->sl = src->sl;
+ dst->src_path_bits = src->src_path_bits;
+ dst->static_rate = src->static_rate;
+ dst->ah_flags = src->ah_flags;
+ dst->port_num = src->port_num;
+ memcpy(&dst->dmac, &src->dmac, sizeof(dst->dmac));
+}
--
2.7.4
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^ permalink raw reply related
* [PATCH v5 08/16] IB/pvrdma: Add device command support
From: Adit Ranadive @ 2016-09-24 23:21 UTC (permalink / raw)
To: dledford, linux-rdma, pv-drivers
Cc: Adit Ranadive, netdev, linux-pci, jhansen, asarwade, georgezhang,
bryantan
In-Reply-To: <cover.1474759181.git.aditr@vmware.com>
This patch enables posting Verb requests and receiving responses to/from
the backend PVRDMA emulation layer.
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Jorgen Hansen <jhansen@vmware.com>
Reviewed-by: George Zhang <georgezhang@vmware.com>
Reviewed-by: Aditya Sarwade <asarwade@vmware.com>
Reviewed-by: Bryan Tan <bryantan@vmware.com>
Signed-off-by: Adit Ranadive <aditr@vmware.com>
---
Changes v4->v5:
- Moved the timeout to pvrdma_cmd_recv.
- Added additional response code parameter to pvrdma_cmd_post.
Changes v3->v4:
- Removed the min check and added a BUILD_BUG_ON check for size.
Changes v2->v3:
- Converted pvrdma_cmd_recv to inline.
- Added a min check in the memcpy to cmd_slot.
- Removed the boolean from pvrdma_cmd_post.
---
drivers/infiniband/hw/pvrdma/pvrdma_cmd.c | 117 ++++++++++++++++++++++++++++++
1 file changed, 117 insertions(+)
create mode 100644 drivers/infiniband/hw/pvrdma/pvrdma_cmd.c
diff --git a/drivers/infiniband/hw/pvrdma/pvrdma_cmd.c b/drivers/infiniband/hw/pvrdma/pvrdma_cmd.c
new file mode 100644
index 0000000..21f1af8
--- /dev/null
+++ b/drivers/infiniband/hw/pvrdma/pvrdma_cmd.c
@@ -0,0 +1,117 @@
+/*
+ * Copyright (c) 2012-2016 VMware, Inc. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of EITHER the GNU General Public License
+ * version 2 as published by the Free Software Foundation or the BSD
+ * 2-Clause License. This program is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License version 2 for more details at
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program available in the file COPYING in the main
+ * directory of this source tree.
+ *
+ * The BSD 2-Clause License
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/list.h>
+
+#include "pvrdma.h"
+
+#define PVRDMA_CMD_TIMEOUT 10000 /* ms */
+
+static inline int pvrdma_cmd_recv(struct pvrdma_dev *dev,
+ union pvrdma_cmd_resp *resp,
+ unsigned resp_code)
+{
+ int err;
+
+ dev_dbg(&dev->pdev->dev, "receive response from device\n");
+
+ err = wait_for_completion_interruptible_timeout(&dev->cmd_done,
+ msecs_to_jiffies(PVRDMA_CMD_TIMEOUT));
+ if (err == 0 || err == -ERESTARTSYS) {
+ dev_warn(&dev->pdev->dev,
+ "completion timeout or interrupted\n");
+ return -ETIMEDOUT;
+ }
+
+ spin_lock(&dev->cmd_lock);
+ memcpy(resp, dev->resp_slot, sizeof(*resp));
+ spin_unlock(&dev->cmd_lock);
+
+ if (resp->hdr.ack != resp_code) {
+ dev_warn(&dev->pdev->dev,
+ "unknown response %#x expected %#x\n",
+ resp->hdr.ack, resp_code);
+ return -EFAULT;
+ }
+
+ return 0;
+}
+
+int
+pvrdma_cmd_post(struct pvrdma_dev *dev, union pvrdma_cmd_req *req,
+ union pvrdma_cmd_resp *resp, unsigned resp_code)
+{
+ int err;
+
+ dev_dbg(&dev->pdev->dev, "post request to device\n");
+
+ /* Serializiation */
+ down(&dev->cmd_sema);
+
+ BUILD_BUG_ON(sizeof(union pvrdma_cmd_req) !=
+ sizeof(struct pvrdma_cmd_modify_qp));
+
+ spin_lock(&dev->cmd_lock);
+ memcpy(dev->cmd_slot, req, sizeof(*req));
+ spin_unlock(&dev->cmd_lock);
+
+ init_completion(&dev->cmd_done);
+ pvrdma_write_reg(dev, PVRDMA_REG_REQUEST, 0);
+
+ /* Make sure the request is written before reading status. */
+ mb();
+
+ err = pvrdma_read_reg(dev, PVRDMA_REG_ERR);
+ if (err == 0) {
+ if (resp != NULL)
+ err = pvrdma_cmd_recv(dev, resp, resp_code);
+ } else {
+ dev_warn(&dev->pdev->dev, "failed to write request %d\n", err);
+ }
+
+ up(&dev->cmd_sema);
+
+ return err;
+}
--
2.7.4
^ permalink raw reply related
* [PATCH v5 09/16] IB/pvrdma: Add support for Completion Queues
From: Adit Ranadive @ 2016-09-24 23:21 UTC (permalink / raw)
To: dledford-H+wXaHxf7aLQT0dZR+AlfA,
linux-rdma-u79uwXL29TY76Z2rM5mHXA,
pv-drivers-pghWNbHTmq7QT0dZR+AlfA
Cc: Adit Ranadive, netdev-u79uwXL29TY76Z2rM5mHXA,
linux-pci-u79uwXL29TY76Z2rM5mHXA, jhansen-pghWNbHTmq7QT0dZR+AlfA,
asarwade-pghWNbHTmq7QT0dZR+AlfA,
georgezhang-pghWNbHTmq7QT0dZR+AlfA,
bryantan-pghWNbHTmq7QT0dZR+AlfA
In-Reply-To: <cover.1474759181.git.aditr-pghWNbHTmq7QT0dZR+AlfA@public.gmane.org>
This patch adds the support for creating and destroying completion queues
on the paravirtual RDMA device.
Reviewed-by: Yuval Shaia <yuval.shaia-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
Reviewed-by: Jorgen Hansen <jhansen-pghWNbHTmq7QT0dZR+AlfA@public.gmane.org>
Reviewed-by: George Zhang <georgezhang-pghWNbHTmq7QT0dZR+AlfA@public.gmane.org>
Reviewed-by: Aditya Sarwade <asarwade-pghWNbHTmq7QT0dZR+AlfA@public.gmane.org>
Reviewed-by: Bryan Tan <bryantan-pghWNbHTmq7QT0dZR+AlfA@public.gmane.org>
Signed-off-by: Adit Ranadive <aditr-pghWNbHTmq7QT0dZR+AlfA@public.gmane.org>
---
Changes v4->v5:
- Updated include for headers in UAPI folder.
- Changed from EINVAL to ENOMEM if atomic add fails.
- Added error code if destroy cq command failed.
- Update to pvrdma_cmd_post for creating/destroying CQ.
Changes v3->v4:
- Added a pvrdma_destroy_cq in the error path.
- Renamed pvrdma_flush_cqe to _pvrdma_flush_cqe since we need a lock to
be held while calling this.
- Updated to use wrapper for UAR write for CQ.
- Ensure that poll_cq does not return error values.
Changes v2->v3:
- Removed boolean from pvrdma_cmd_post.
- Return -EAGAIN if qp retrieved from CQE is bogus.
- Check for invalid index of ring.
---
drivers/infiniband/hw/pvrdma/pvrdma_cq.c | 426 +++++++++++++++++++++++++++++++
1 file changed, 426 insertions(+)
create mode 100644 drivers/infiniband/hw/pvrdma/pvrdma_cq.c
diff --git a/drivers/infiniband/hw/pvrdma/pvrdma_cq.c b/drivers/infiniband/hw/pvrdma/pvrdma_cq.c
new file mode 100644
index 0000000..f26d4bc
--- /dev/null
+++ b/drivers/infiniband/hw/pvrdma/pvrdma_cq.c
@@ -0,0 +1,426 @@
+/*
+ * Copyright (c) 2012-2016 VMware, Inc. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of EITHER the GNU General Public License
+ * version 2 as published by the Free Software Foundation or the BSD
+ * 2-Clause License. This program is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License version 2 for more details at
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program available in the file COPYING in the main
+ * directory of this source tree.
+ *
+ * The BSD 2-Clause License
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <asm/page.h>
+#include <linux/io.h>
+#include <linux/wait.h>
+#include <rdma/ib_addr.h>
+#include <rdma/ib_smi.h>
+#include <rdma/ib_user_verbs.h>
+#include <rdma/pvrdma-abi.h>
+
+#include "pvrdma.h"
+
+/**
+ * pvrdma_req_notify_cq - request notification for a completion queue
+ * @ibcq: the completion queue
+ * @notify_flags: notification flags
+ *
+ * @return: 0 for success.
+ */
+int pvrdma_req_notify_cq(struct ib_cq *ibcq,
+ enum ib_cq_notify_flags notify_flags)
+{
+ struct pvrdma_dev *dev = to_vdev(ibcq->device);
+ struct pvrdma_cq *cq = to_vcq(ibcq);
+ u32 val = cq->cq_handle;
+
+ val |= (notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED ?
+ PVRDMA_UAR_CQ_ARM_SOL : PVRDMA_UAR_CQ_ARM;
+
+ pvrdma_write_uar_cq(dev, val);
+
+ return 0;
+}
+
+/**
+ * pvrdma_create_cq - create completion queue
+ * @ibdev: the device
+ * @attr: completion queue attributes
+ * @context: user context
+ * @udata: user data
+ *
+ * @return: ib_cq completion queue pointer on success,
+ * otherwise returns negative errno.
+ */
+struct ib_cq *pvrdma_create_cq(struct ib_device *ibdev,
+ const struct ib_cq_init_attr *attr,
+ struct ib_ucontext *context,
+ struct ib_udata *udata)
+{
+ int entries = attr->cqe;
+ struct pvrdma_dev *dev = to_vdev(ibdev);
+ struct pvrdma_cq *cq;
+ int ret;
+ int npages;
+ unsigned long flags;
+ union pvrdma_cmd_req req;
+ union pvrdma_cmd_resp rsp;
+ struct pvrdma_cmd_create_cq *cmd = &req.create_cq;
+ struct pvrdma_cmd_create_cq_resp *resp = &rsp.create_cq_resp;
+ struct pvrdma_create_cq ucmd;
+
+ BUILD_BUG_ON(sizeof(struct pvrdma_cqe) != 64);
+
+ entries = roundup_pow_of_two(entries);
+ if (entries < 1 || entries > dev->dsr->caps.max_cqe)
+ return ERR_PTR(-EINVAL);
+
+ if (!atomic_add_unless(&dev->num_cqs, 1, dev->dsr->caps.max_cq))
+ return ERR_PTR(-ENOMEM);
+
+ cq = kzalloc(sizeof(*cq), GFP_KERNEL);
+ if (!cq) {
+ atomic_dec(&dev->num_cqs);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ cq->ibcq.cqe = entries;
+
+ if (context) {
+ if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) {
+ ret = -EFAULT;
+ goto err_cq;
+ }
+
+ cq->umem = ib_umem_get(context, ucmd.buf_addr, ucmd.buf_size,
+ IB_ACCESS_LOCAL_WRITE, 1);
+ if (IS_ERR(cq->umem)) {
+ ret = PTR_ERR(cq->umem);
+ goto err_cq;
+ }
+
+ npages = ib_umem_page_count(cq->umem);
+ } else {
+ cq->is_kernel = true;
+
+ /* One extra page for shared ring state */
+ npages = 1 + (entries * sizeof(struct pvrdma_cqe) +
+ PAGE_SIZE - 1) / PAGE_SIZE;
+
+ /* Skip header page. */
+ cq->offset = PAGE_SIZE;
+ }
+
+ if (npages < 0 || npages > PVRDMA_PAGE_DIR_MAX_PAGES) {
+ dev_warn(&dev->pdev->dev,
+ "overflow pages in completion queue\n");
+ ret = -EINVAL;
+ goto err_umem;
+ }
+
+ ret = pvrdma_page_dir_init(dev, &cq->pdir, npages, cq->is_kernel);
+ if (ret) {
+ dev_warn(&dev->pdev->dev,
+ "could not allocate page directory\n");
+ goto err_umem;
+ }
+
+ /* Ring state is always the first page. Set in library for user cq. */
+ if (cq->is_kernel)
+ cq->ring_state = cq->pdir.pages[0];
+ else
+ pvrdma_page_dir_insert_umem(&cq->pdir, cq->umem, 0);
+
+ atomic_set(&cq->refcnt, 1);
+ init_waitqueue_head(&cq->wait);
+ spin_lock_init(&cq->cq_lock);
+
+ memset(cmd, 0, sizeof(*cmd));
+ cmd->hdr.cmd = PVRDMA_CMD_CREATE_CQ;
+ cmd->nchunks = npages;
+ cmd->ctx_handle = (context) ?
+ (u64)to_vucontext(context)->ctx_handle : 0;
+ cmd->cqe = entries;
+ cmd->pdir_dma = cq->pdir.dir_dma;
+ ret = pvrdma_cmd_post(dev, &req, &rsp, PVRDMA_CMD_CREATE_CQ_RESP);
+ if (ret < 0) {
+ dev_warn(&dev->pdev->dev,
+ "could not create completion queue, error: %d\n", ret);
+ goto err_page_dir;
+ }
+
+ cq->ibcq.cqe = resp->cqe;
+ cq->cq_handle = resp->cq_handle;
+ spin_lock_irqsave(&dev->cq_tbl_lock, flags);
+ dev->cq_tbl[cq->cq_handle % dev->dsr->caps.max_cq] = cq;
+ spin_unlock_irqrestore(&dev->cq_tbl_lock, flags);
+
+ if (context) {
+ cq->uar = &(to_vucontext(context)->uar);
+
+ /* Copy udata back. */
+ if (ib_copy_to_udata(udata, &cq->cq_handle, sizeof(__u32))) {
+ dev_warn(&dev->pdev->dev,
+ "failed to copy back udata\n");
+ pvrdma_destroy_cq(&cq->ibcq);
+ return ERR_PTR(-EINVAL);
+ }
+ }
+
+ return &cq->ibcq;
+
+err_page_dir:
+ pvrdma_page_dir_cleanup(dev, &cq->pdir);
+err_umem:
+ if (context)
+ ib_umem_release(cq->umem);
+err_cq:
+ atomic_dec(&dev->num_cqs);
+ kfree(cq);
+
+ return ERR_PTR(ret);
+}
+
+static void pvrdma_free_cq(struct pvrdma_dev *dev, struct pvrdma_cq *cq)
+{
+ atomic_dec(&cq->refcnt);
+ wait_event(cq->wait, !atomic_read(&cq->refcnt));
+
+ if (!cq->is_kernel)
+ ib_umem_release(cq->umem);
+
+ pvrdma_page_dir_cleanup(dev, &cq->pdir);
+ kfree(cq);
+}
+
+/**
+ * pvrdma_destroy_cq - destroy completion queue
+ * @cq: the completion queue to destroy.
+ *
+ * @return: 0 for success.
+ */
+int pvrdma_destroy_cq(struct ib_cq *cq)
+{
+ struct pvrdma_cq *vcq = to_vcq(cq);
+ union pvrdma_cmd_req req;
+ struct pvrdma_cmd_destroy_cq *cmd = &req.destroy_cq;
+ struct pvrdma_dev *dev = to_vdev(cq->device);
+ unsigned long flags;
+ int ret;
+
+ memset(cmd, 0, sizeof(*cmd));
+ cmd->hdr.cmd = PVRDMA_CMD_DESTROY_CQ;
+ cmd->cq_handle = vcq->cq_handle;
+
+ ret = pvrdma_cmd_post(dev, &req, NULL, 0);
+ if (ret < 0)
+ dev_warn(&dev->pdev->dev,
+ "could not destroy completion queue, error: %d\n",
+ ret);
+
+ /* free cq's resources */
+ spin_lock_irqsave(&dev->cq_tbl_lock, flags);
+ dev->cq_tbl[vcq->cq_handle] = NULL;
+ spin_unlock_irqrestore(&dev->cq_tbl_lock, flags);
+
+ pvrdma_free_cq(dev, vcq);
+ atomic_dec(&dev->num_cqs);
+
+ return ret;
+}
+
+/**
+ * pvrdma_modify_cq - modify the CQ moderation parameters
+ * @ibcq: the CQ to modify
+ * @cq_count: number of CQEs that will trigger an event
+ * @cq_period: max period of time in usec before triggering an event
+ *
+ * @return: -EOPNOTSUPP as CQ resize is not supported.
+ */
+int pvrdma_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline struct pvrdma_cqe *get_cqe(struct pvrdma_cq *cq, int i)
+{
+ return (struct pvrdma_cqe *)pvrdma_page_dir_get_ptr(
+ &cq->pdir,
+ cq->offset +
+ sizeof(struct pvrdma_cqe) * i);
+}
+
+void _pvrdma_flush_cqe(struct pvrdma_qp *qp, struct pvrdma_cq *cq)
+{
+ int head;
+ int has_data;
+
+ if (!cq->is_kernel)
+ return;
+
+ /* Lock held */
+ has_data = pvrdma_idx_ring_has_data(&cq->ring_state->rx,
+ cq->ibcq.cqe, &head);
+ if (unlikely(has_data > 0)) {
+ int items;
+ int curr;
+ int tail = pvrdma_idx(&cq->ring_state->rx.prod_tail,
+ cq->ibcq.cqe);
+ struct pvrdma_cqe *cqe;
+ struct pvrdma_cqe *curr_cqe;
+
+ items = (tail > head) ? (tail - head) :
+ (cq->ibcq.cqe - head + tail);
+ curr = --tail;
+ while (items-- > 0) {
+ if (curr < 0)
+ curr = cq->ibcq.cqe - 1;
+ if (tail < 0)
+ tail = cq->ibcq.cqe - 1;
+ curr_cqe = get_cqe(cq, curr);
+ if ((curr_cqe->qp & 0xFFFF) != qp->qp_handle) {
+ if (curr != tail) {
+ cqe = get_cqe(cq, tail);
+ *cqe = *curr_cqe;
+ }
+ tail--;
+ } else {
+ pvrdma_idx_ring_inc(
+ &cq->ring_state->rx.cons_head,
+ cq->ibcq.cqe);
+ }
+ curr--;
+ }
+ }
+}
+
+static int pvrdma_poll_one(struct pvrdma_cq *cq, struct pvrdma_qp **cur_qp,
+ struct ib_wc *wc)
+{
+ struct pvrdma_dev *dev = to_vdev(cq->ibcq.device);
+ int has_data;
+ unsigned int head;
+ bool tried = false;
+ struct pvrdma_cqe *cqe;
+
+retry:
+ has_data = pvrdma_idx_ring_has_data(&cq->ring_state->rx,
+ cq->ibcq.cqe, &head);
+ if (has_data == 0) {
+ if (tried)
+ return -EAGAIN;
+
+ pvrdma_write_uar_cq(dev, cq->cq_handle | PVRDMA_UAR_CQ_POLL);
+
+ tried = true;
+ goto retry;
+ } else if (has_data == PVRDMA_INVALID_IDX) {
+ dev_err(&dev->pdev->dev, "CQ ring state invalid\n");
+ return -EAGAIN;
+ }
+
+ cqe = get_cqe(cq, head);
+
+ /* Ensure cqe is valid. */
+ rmb();
+ if (dev->qp_tbl[cqe->qp & 0xffff])
+ *cur_qp = (struct pvrdma_qp *)dev->qp_tbl[cqe->qp & 0xffff];
+ else
+ return -EAGAIN;
+
+ wc->opcode = pvrdma_wc_opcode_to_ib(cqe->opcode);
+ wc->status = pvrdma_wc_status_to_ib(cqe->status);
+ wc->wr_id = cqe->wr_id;
+ wc->qp = &(*cur_qp)->ibqp;
+ wc->byte_len = cqe->byte_len;
+ wc->ex.imm_data = cqe->imm_data;
+ wc->src_qp = cqe->src_qp;
+ wc->wc_flags = pvrdma_wc_flags_to_ib(cqe->wc_flags);
+ wc->pkey_index = cqe->pkey_index;
+ wc->slid = cqe->slid;
+ wc->sl = cqe->sl;
+ wc->dlid_path_bits = cqe->dlid_path_bits;
+ wc->port_num = cqe->port_num;
+ wc->vendor_err = 0;
+
+ /* Update shared ring state */
+ pvrdma_idx_ring_inc(&cq->ring_state->rx.cons_head, cq->ibcq.cqe);
+
+ return 0;
+}
+
+/**
+ * pvrdma_poll_cq - poll for work completion queue entries
+ * @ibcq: completion queue
+ * @num_entries: the maximum number of entries
+ * @entry: pointer to work completion array
+ *
+ * @return: number of polled completion entries
+ */
+int pvrdma_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc)
+{
+ struct pvrdma_cq *cq = to_vcq(ibcq);
+ struct pvrdma_qp *cur_qp = NULL;
+ unsigned long flags;
+ int npolled;
+
+ if (num_entries < 1 || wc == NULL)
+ return 0;
+
+ spin_lock_irqsave(&cq->cq_lock, flags);
+ for (npolled = 0; npolled < num_entries; ++npolled) {
+ if (pvrdma_poll_one(cq, &cur_qp, wc + npolled))
+ break;
+ }
+
+ spin_unlock_irqrestore(&cq->cq_lock, flags);
+
+ /* Ensure we do not return errors from poll_cq */
+ return npolled;
+}
+
+/**
+ * pvrdma_resize_cq - resize CQ
+ * @ibcq: the completion queue
+ * @entries: CQ entries
+ * @udata: user data
+ *
+ * @return: -EOPNOTSUPP as CQ resize is not supported.
+ */
+int pvrdma_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
+{
+ return -EOPNOTSUPP;
+}
--
2.7.4
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^ permalink raw reply related
* [PATCH v5 10/16] IB/pvrdma: Add UAR support
From: Adit Ranadive @ 2016-09-24 23:21 UTC (permalink / raw)
To: dledford-H+wXaHxf7aLQT0dZR+AlfA,
linux-rdma-u79uwXL29TY76Z2rM5mHXA,
pv-drivers-pghWNbHTmq7QT0dZR+AlfA
Cc: Adit Ranadive, netdev-u79uwXL29TY76Z2rM5mHXA,
linux-pci-u79uwXL29TY76Z2rM5mHXA, jhansen-pghWNbHTmq7QT0dZR+AlfA,
asarwade-pghWNbHTmq7QT0dZR+AlfA,
georgezhang-pghWNbHTmq7QT0dZR+AlfA,
bryantan-pghWNbHTmq7QT0dZR+AlfA
In-Reply-To: <cover.1474759181.git.aditr-pghWNbHTmq7QT0dZR+AlfA@public.gmane.org>
This patch adds the UAR support for the paravirtual RDMA device. The UAR
pages are MMIO pages from the virtual PCI space. We define offsets within
this page to provide the fast data-path operations.
Reviewed-by: Yuval Shaia <yuval.shaia-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
Reviewed-by: Jorgen Hansen <jhansen-pghWNbHTmq7QT0dZR+AlfA@public.gmane.org>
Reviewed-by: George Zhang <georgezhang-pghWNbHTmq7QT0dZR+AlfA@public.gmane.org>
Reviewed-by: Aditya Sarwade <asarwade-pghWNbHTmq7QT0dZR+AlfA@public.gmane.org>
Reviewed-by: Bryan Tan <bryantan-pghWNbHTmq7QT0dZR+AlfA@public.gmane.org>
Signed-off-by: Adit Ranadive <aditr-pghWNbHTmq7QT0dZR+AlfA@public.gmane.org>
---
Changes v3->v4:
- Removed an unnecessary comment.
Changes v2->v3:
- Used is_power_of_2 function.
- Simplify pvrdma_uar_alloc function.
---
drivers/infiniband/hw/pvrdma/pvrdma_doorbell.c | 127 +++++++++++++++++++++++++
1 file changed, 127 insertions(+)
create mode 100644 drivers/infiniband/hw/pvrdma/pvrdma_doorbell.c
diff --git a/drivers/infiniband/hw/pvrdma/pvrdma_doorbell.c b/drivers/infiniband/hw/pvrdma/pvrdma_doorbell.c
new file mode 100644
index 0000000..bf51357
--- /dev/null
+++ b/drivers/infiniband/hw/pvrdma/pvrdma_doorbell.c
@@ -0,0 +1,127 @@
+/*
+ * Copyright (c) 2012-2016 VMware, Inc. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of EITHER the GNU General Public License
+ * version 2 as published by the Free Software Foundation or the BSD
+ * 2-Clause License. This program is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License version 2 for more details at
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program available in the file COPYING in the main
+ * directory of this source tree.
+ *
+ * The BSD 2-Clause License
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/bitmap.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+
+#include "pvrdma.h"
+
+int pvrdma_uar_table_init(struct pvrdma_dev *dev)
+{
+ u32 num = dev->dsr->caps.max_uar;
+ u32 mask = num - 1;
+ struct pvrdma_id_table *tbl = &dev->uar_table.tbl;
+
+ if (!is_power_of_2(num))
+ return -EINVAL;
+
+ tbl->last = 0;
+ tbl->top = 0;
+ tbl->max = num;
+ tbl->mask = mask;
+ spin_lock_init(&tbl->lock);
+ tbl->table = kcalloc(BITS_TO_LONGS(num), sizeof(long), GFP_KERNEL);
+ if (!tbl->table)
+ return -ENOMEM;
+
+ /* 0th UAR is taken by the device. */
+ set_bit(0, tbl->table);
+
+ return 0;
+}
+
+void pvrdma_uar_table_cleanup(struct pvrdma_dev *dev)
+{
+ struct pvrdma_id_table *tbl = &dev->uar_table.tbl;
+
+ kfree(tbl->table);
+}
+
+int pvrdma_uar_alloc(struct pvrdma_dev *dev, struct pvrdma_uar_map *uar)
+{
+ struct pvrdma_id_table *tbl;
+ unsigned long flags;
+ u32 obj;
+
+ tbl = &dev->uar_table.tbl;
+
+ spin_lock_irqsave(&tbl->lock, flags);
+ obj = find_next_zero_bit(tbl->table, tbl->max, tbl->last);
+ if (obj >= tbl->max) {
+ tbl->top = (tbl->top + tbl->max) & tbl->mask;
+ obj = find_first_zero_bit(tbl->table, tbl->max);
+ }
+
+ if (obj >= tbl->max) {
+ spin_unlock_irqrestore(&tbl->lock, flags);
+ return -ENOMEM;
+ }
+
+ set_bit(obj, tbl->table);
+ obj |= tbl->top;
+
+ spin_unlock_irqrestore(&tbl->lock, flags);
+
+ uar->index = obj;
+ uar->pfn = (pci_resource_start(dev->pdev, PVRDMA_PCI_RESOURCE_UAR) >>
+ PAGE_SHIFT) + uar->index;
+
+ return 0;
+}
+
+void pvrdma_uar_free(struct pvrdma_dev *dev, struct pvrdma_uar_map *uar)
+{
+ struct pvrdma_id_table *tbl = &dev->uar_table.tbl;
+ unsigned long flags;
+ u32 obj;
+
+ obj = uar->index & (tbl->max - 1);
+ spin_lock_irqsave(&tbl->lock, flags);
+ clear_bit(obj, tbl->table);
+ tbl->last = min(tbl->last, obj);
+ tbl->top = (tbl->top + tbl->max) & tbl->mask;
+ spin_unlock_irqrestore(&tbl->lock, flags);
+}
--
2.7.4
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^ permalink raw reply related
* [PATCH v5 11/16] IB/pvrdma: Add support for memory regions
From: Adit Ranadive @ 2016-09-24 23:21 UTC (permalink / raw)
To: dledford, linux-rdma, pv-drivers
Cc: Adit Ranadive, netdev, linux-pci, jhansen, asarwade, georgezhang,
bryantan
In-Reply-To: <cover.1474759181.git.aditr@vmware.com>
This patch adds support for creating and destroying memory regions. The
PVRDMA device supports User MRs, DMA MRs (no Remote Read/Write support),
Fast Register MRs.
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Jorgen Hansen <jhansen@vmware.com>
Reviewed-by: George Zhang <georgezhang@vmware.com>
Reviewed-by: Aditya Sarwade <asarwade@vmware.com>
Reviewed-by: Bryan Tan <bryantan@vmware.com>
Signed-off-by: Adit Ranadive <aditr@vmware.com>
---
Changes v4->v5:
- Check the access flags correctly for DMA MR.
- Update to pvrdma_cmd_post for creating/destroying MRs.
Changes v3->v4:
- Changed access flag check for DMA MR to using bit operation.
- Removed some local variables.
Changes v2->v3:
- Removed boolean in pvrdma_cmd_post.
---
drivers/infiniband/hw/pvrdma/pvrdma_mr.c | 334 +++++++++++++++++++++++++++++++
1 file changed, 334 insertions(+)
create mode 100644 drivers/infiniband/hw/pvrdma/pvrdma_mr.c
diff --git a/drivers/infiniband/hw/pvrdma/pvrdma_mr.c b/drivers/infiniband/hw/pvrdma/pvrdma_mr.c
new file mode 100644
index 0000000..8519f32
--- /dev/null
+++ b/drivers/infiniband/hw/pvrdma/pvrdma_mr.c
@@ -0,0 +1,334 @@
+/*
+ * Copyright (c) 2012-2016 VMware, Inc. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of EITHER the GNU General Public License
+ * version 2 as published by the Free Software Foundation or the BSD
+ * 2-Clause License. This program is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License version 2 for more details at
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program available in the file COPYING in the main
+ * directory of this source tree.
+ *
+ * The BSD 2-Clause License
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/list.h>
+#include <linux/slab.h>
+
+#include "pvrdma.h"
+
+/**
+ * pvrdma_get_dma_mr - get a DMA memory region
+ * @pd: protection domain
+ * @acc: access flags
+ *
+ * @return: ib_mr pointer on success, otherwise returns an errno.
+ */
+struct ib_mr *pvrdma_get_dma_mr(struct ib_pd *pd, int acc)
+{
+ struct pvrdma_dev *dev = to_vdev(pd->device);
+ struct pvrdma_user_mr *mr;
+ union pvrdma_cmd_req req;
+ union pvrdma_cmd_resp rsp;
+ struct pvrdma_cmd_create_mr *cmd = &req.create_mr;
+ struct pvrdma_cmd_create_mr_resp *resp = &rsp.create_mr_resp;
+ int ret;
+
+ /* Support only LOCAL_WRITE flag for DMA MRs */
+ if (acc & ~IB_ACCESS_LOCAL_WRITE) {
+ dev_warn(&dev->pdev->dev,
+ "unsupported dma mr access flags %#x\n", acc);
+ return ERR_PTR(-EOPNOTSUPP);
+ }
+
+ mr = kzalloc(sizeof(*mr), GFP_KERNEL);
+ if (!mr)
+ return ERR_PTR(-ENOMEM);
+
+ memset(cmd, 0, sizeof(*cmd));
+ cmd->hdr.cmd = PVRDMA_CMD_CREATE_MR;
+ cmd->pd_handle = to_vpd(pd)->pd_handle;
+ cmd->access_flags = acc;
+ cmd->flags = PVRDMA_MR_FLAG_DMA;
+
+ ret = pvrdma_cmd_post(dev, &req, &rsp, PVRDMA_CMD_CREATE_MR_RESP);
+ if (ret < 0) {
+ dev_warn(&dev->pdev->dev,
+ "could not get DMA mem region, error: %d\n", ret);
+ kfree(mr);
+ return ERR_PTR(ret);
+ }
+
+ mr->mmr.mr_handle = resp->mr_handle;
+ mr->ibmr.lkey = resp->lkey;
+ mr->ibmr.rkey = resp->rkey;
+
+ return &mr->ibmr;
+}
+
+/**
+ * pvrdma_reg_user_mr - register a userspace memory region
+ * @pd: protection domain
+ * @start: starting address
+ * @length: length of region
+ * @virt_addr: I/O virtual address
+ * @access_flags: access flags for memory region
+ * @udata: user data
+ *
+ * @return: ib_mr pointer on success, otherwise returns an errno.
+ */
+struct ib_mr *pvrdma_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
+ u64 virt_addr, int access_flags,
+ struct ib_udata *udata)
+{
+ struct pvrdma_dev *dev = to_vdev(pd->device);
+ struct pvrdma_user_mr *mr = NULL;
+ struct ib_umem *umem;
+ union pvrdma_cmd_req req;
+ union pvrdma_cmd_resp rsp;
+ struct pvrdma_cmd_create_mr *cmd = &req.create_mr;
+ struct pvrdma_cmd_create_mr_resp *resp = &rsp.create_mr_resp;
+ int nchunks;
+ int ret;
+ int entry;
+ struct scatterlist *sg;
+
+ if (length == 0 || length > dev->dsr->caps.max_mr_size) {
+ dev_warn(&dev->pdev->dev, "invalid mem region length\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ umem = ib_umem_get(pd->uobject->context, start,
+ length, access_flags, 0);
+ if (IS_ERR(umem)) {
+ dev_warn(&dev->pdev->dev,
+ "could not get umem for mem region\n");
+ return ERR_CAST(umem);
+ }
+
+ nchunks = 0;
+ for_each_sg(umem->sg_head.sgl, sg, umem->nmap, entry)
+ nchunks += sg_dma_len(sg) >> PAGE_SHIFT;
+
+ if (nchunks < 0 || nchunks > PVRDMA_PAGE_DIR_MAX_PAGES) {
+ dev_warn(&dev->pdev->dev, "overflow %d pages in mem region\n",
+ nchunks);
+ ret = -EINVAL;
+ goto err_umem;
+ }
+
+ mr = kzalloc(sizeof(*mr), GFP_KERNEL);
+ if (!mr) {
+ ret = -ENOMEM;
+ goto err_umem;
+ }
+
+ mr->mmr.iova = virt_addr;
+ mr->mmr.size = length;
+ mr->umem = umem;
+
+ ret = pvrdma_page_dir_init(dev, &mr->pdir, nchunks, false);
+ if (ret) {
+ dev_warn(&dev->pdev->dev,
+ "could not allocate page directory\n");
+ goto err_umem;
+ }
+
+ ret = pvrdma_page_dir_insert_umem(&mr->pdir, mr->umem, 0);
+ if (ret)
+ goto err_pdir;
+
+ memset(cmd, 0, sizeof(*cmd));
+ cmd->hdr.cmd = PVRDMA_CMD_CREATE_MR;
+ cmd->start = start;
+ cmd->length = length;
+ cmd->pd_handle = to_vpd(pd)->pd_handle;
+ cmd->access_flags = access_flags;
+ cmd->nchunks = nchunks;
+ cmd->pdir_dma = mr->pdir.dir_dma;
+
+ ret = pvrdma_cmd_post(dev, &req, &rsp, PVRDMA_CMD_CREATE_MR_RESP);
+ if (ret < 0) {
+ dev_warn(&dev->pdev->dev,
+ "could not register mem region, error: %d\n", ret);
+ goto err_pdir;
+ }
+
+ mr->mmr.mr_handle = resp->mr_handle;
+ mr->ibmr.lkey = resp->lkey;
+ mr->ibmr.rkey = resp->rkey;
+
+ return &mr->ibmr;
+
+err_pdir:
+ pvrdma_page_dir_cleanup(dev, &mr->pdir);
+err_umem:
+ ib_umem_release(umem);
+ kfree(mr);
+
+ return ERR_PTR(ret);
+}
+
+/**
+ * pvrdma_alloc_mr - allocate a memory region
+ * @pd: protection domain
+ * @mr_type: type of memory region
+ * @max_num_sg: maximum number of pages
+ *
+ * @return: ib_mr pointer on success, otherwise returns an errno.
+ */
+struct ib_mr *pvrdma_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type,
+ u32 max_num_sg)
+{
+ struct pvrdma_dev *dev = to_vdev(pd->device);
+ struct pvrdma_user_mr *mr;
+ union pvrdma_cmd_req req;
+ union pvrdma_cmd_resp rsp;
+ struct pvrdma_cmd_create_mr *cmd = &req.create_mr;
+ struct pvrdma_cmd_create_mr_resp *resp = &rsp.create_mr_resp;
+ int size = max_num_sg * sizeof(u64);
+ int ret;
+
+ if (mr_type != IB_MR_TYPE_MEM_REG ||
+ max_num_sg > PVRDMA_MAX_FAST_REG_PAGES)
+ return ERR_PTR(-EINVAL);
+
+ mr = kzalloc(sizeof(*mr), GFP_KERNEL);
+ if (!mr)
+ return ERR_PTR(-ENOMEM);
+
+ mr->pages = kzalloc(size, GFP_KERNEL);
+ if (!mr->pages) {
+ ret = -ENOMEM;
+ goto freemr;
+ }
+
+ ret = pvrdma_page_dir_init(dev, &mr->pdir, max_num_sg, false);
+ if (ret) {
+ dev_warn(&dev->pdev->dev,
+ "failed to allocate page dir for mr\n");
+ ret = -ENOMEM;
+ goto freepages;
+ }
+
+ memset(cmd, 0, sizeof(*cmd));
+ cmd->hdr.cmd = PVRDMA_CMD_CREATE_MR;
+ cmd->pd_handle = to_vpd(pd)->pd_handle;
+ cmd->access_flags = 0;
+ cmd->flags = PVRDMA_MR_FLAG_FRMR;
+ cmd->nchunks = max_num_sg;
+
+ ret = pvrdma_cmd_post(dev, &req, &rsp, PVRDMA_CMD_CREATE_MR_RESP);
+ if (ret < 0) {
+ dev_warn(&dev->pdev->dev,
+ "could not create FR mem region, error: %d\n", ret);
+ goto freepdir;
+ }
+
+ mr->max_pages = max_num_sg;
+ mr->mmr.mr_handle = resp->mr_handle;
+ mr->ibmr.lkey = resp->lkey;
+ mr->ibmr.rkey = resp->rkey;
+ mr->page_shift = PAGE_SHIFT;
+ mr->umem = NULL;
+
+ return &mr->ibmr;
+
+freepdir:
+ pvrdma_page_dir_cleanup(dev, &mr->pdir);
+freepages:
+ kfree(mr->pages);
+freemr:
+ kfree(mr);
+ return ERR_PTR(ret);
+}
+
+/**
+ * pvrdma_dereg_mr - deregister a memory region
+ * @ibmr: memory region
+ *
+ * @return: 0 on success.
+ */
+int pvrdma_dereg_mr(struct ib_mr *ibmr)
+{
+ struct pvrdma_user_mr *mr = to_vmr(ibmr);
+ struct pvrdma_dev *dev = to_vdev(ibmr->device);
+ union pvrdma_cmd_req req;
+ struct pvrdma_cmd_destroy_mr *cmd = &req.destroy_mr;
+ int ret;
+
+ memset(cmd, 0, sizeof(*cmd));
+ cmd->hdr.cmd = PVRDMA_CMD_DESTROY_MR;
+ cmd->mr_handle = mr->mmr.mr_handle;
+ ret = pvrdma_cmd_post(dev, &req, NULL, 0);
+ if (ret < 0)
+ dev_warn(&dev->pdev->dev,
+ "could not deregister mem region, error: %d\n", ret);
+
+ pvrdma_page_dir_cleanup(dev, &mr->pdir);
+ if (mr->umem)
+ ib_umem_release(mr->umem);
+
+ kfree(mr->pages);
+ kfree(mr);
+
+ return 0;
+}
+
+static int pvrdma_set_page(struct ib_mr *ibmr, u64 addr)
+{
+ struct pvrdma_user_mr *mr = to_vmr(ibmr);
+
+ if (mr->npages == mr->max_pages)
+ return -ENOMEM;
+
+ mr->pages[mr->npages++] = addr;
+ return 0;
+}
+
+int pvrdma_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, int sg_nents,
+ unsigned int *sg_offset)
+{
+ struct pvrdma_user_mr *mr = to_vmr(ibmr);
+ struct pvrdma_dev *dev = to_vdev(ibmr->device);
+ int ret;
+
+ mr->npages = 0;
+
+ ret = ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset, pvrdma_set_page);
+ if (ret < 0)
+ dev_warn(&dev->pdev->dev, "could not map sg to pages\n");
+
+ return ret;
+}
--
2.7.4
^ permalink raw reply related
* [PATCH v5 12/16] IB/pvrdma: Add Queue Pair support
From: Adit Ranadive @ 2016-09-24 23:21 UTC (permalink / raw)
To: dledford, linux-rdma, pv-drivers
Cc: Adit Ranadive, netdev, linux-pci, jhansen, asarwade, georgezhang,
bryantan
In-Reply-To: <cover.1474759181.git.aditr@vmware.com>
This patch adds the ability to create, modify, query and destroy QPs. The
PVRDMA device supports RC, UD and GSI QPs.
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Jorgen Hansen <jhansen@vmware.com>
Reviewed-by: George Zhang <georgezhang@vmware.com>
Reviewed-by: Aditya Sarwade <asarwade@vmware.com>
Reviewed-by: Bryan Tan <bryantan@vmware.com>
Signed-off-by: Adit Ranadive <aditr@vmware.com>
---
Changes v4->v5:
- Updated include for headers in UAPI folder.
- Update to pvrdma_cmd_post for creating/destroying/querying/modifying QPs.
- Use the pvrdma_sge struct when posting WRs/allocating QP memory.
- Removed two set but unused variables.
Changes v3->v4:
- Removed an unnecessary switch case.
- Unified the returns in pvrdma_create_qp to use one exit point.
- Renamed pvrdma_flush_cqe to _pvrdma_flush_cqe since we need a lock to
be held when calling this.
- Updated to use wrapper for UAR write for QP.
- Updated conversion function to func_name(dst, src) format.
- Renamed max_gs to max_sg.
- Renamed cap variable to req_cap in pvrdma_set_sq/rq_size.
- Changed dev_warn to dev_warn_ratelimited in pvrdma_post_send/recv.
- Added nesting locking for flushing CQs when destroying/resetting a QP.
- Added missing ret value.
Changes v2->v3:
- Removed boolean in pvrdma_cmd_post.
---
drivers/infiniband/hw/pvrdma/pvrdma_qp.c | 973 +++++++++++++++++++++++++++++++
1 file changed, 973 insertions(+)
create mode 100644 drivers/infiniband/hw/pvrdma/pvrdma_qp.c
diff --git a/drivers/infiniband/hw/pvrdma/pvrdma_qp.c b/drivers/infiniband/hw/pvrdma/pvrdma_qp.c
new file mode 100644
index 0000000..52c689d
--- /dev/null
+++ b/drivers/infiniband/hw/pvrdma/pvrdma_qp.c
@@ -0,0 +1,973 @@
+/*
+ * Copyright (c) 2012-2016 VMware, Inc. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of EITHER the GNU General Public License
+ * version 2 as published by the Free Software Foundation or the BSD
+ * 2-Clause License. This program is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License version 2 for more details at
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program available in the file COPYING in the main
+ * directory of this source tree.
+ *
+ * The BSD 2-Clause License
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <asm/page.h>
+#include <linux/io.h>
+#include <linux/wait.h>
+#include <rdma/ib_addr.h>
+#include <rdma/ib_smi.h>
+#include <rdma/ib_user_verbs.h>
+#include <rdma/pvrdma-abi.h>
+
+#include "pvrdma.h"
+
+static inline void get_cqs(struct pvrdma_qp *qp, struct pvrdma_cq **send_cq,
+ struct pvrdma_cq **recv_cq)
+{
+ *send_cq = to_vcq(qp->ibqp.send_cq);
+ *recv_cq = to_vcq(qp->ibqp.recv_cq);
+}
+
+static void pvrdma_lock_cqs(struct pvrdma_cq *scq, struct pvrdma_cq *rcq,
+ unsigned long *scq_flags,
+ unsigned long *rcq_flags)
+ __acquires(scq->cq_lock) __acquires(rcq->cq_lock)
+{
+ if (scq == rcq) {
+ spin_lock_irqsave(&scq->cq_lock, *scq_flags);
+ __acquire(rcq->cq_lock);
+ } else if (scq->cq_handle < rcq->cq_handle) {
+ spin_lock_irqsave(&scq->cq_lock, *scq_flags);
+ spin_lock_irqsave_nested(&rcq->cq_lock, *rcq_flags,
+ SINGLE_DEPTH_NESTING);
+ } else {
+ spin_lock_irqsave(&rcq->cq_lock, *rcq_flags);
+ spin_lock_irqsave_nested(&scq->cq_lock, *scq_flags,
+ SINGLE_DEPTH_NESTING);
+ }
+}
+
+static void pvrdma_unlock_cqs(struct pvrdma_cq *scq, struct pvrdma_cq *rcq,
+ unsigned long *scq_flags,
+ unsigned long *rcq_flags)
+ __releases(scq->cq_lock) __releases(rcq->cq_lock)
+{
+ if (scq == rcq) {
+ __release(rcq->cq_lock);
+ spin_unlock_irqrestore(&scq->cq_lock, *scq_flags);
+ } else if (scq->cq_handle < rcq->cq_handle) {
+ spin_unlock_irqrestore(&rcq->cq_lock, *rcq_flags);
+ spin_unlock_irqrestore(&scq->cq_lock, *scq_flags);
+ } else {
+ spin_unlock_irqrestore(&scq->cq_lock, *scq_flags);
+ spin_unlock_irqrestore(&rcq->cq_lock, *rcq_flags);
+ }
+}
+
+static void pvrdma_reset_qp(struct pvrdma_qp *qp)
+{
+ struct pvrdma_cq *scq, *rcq;
+ unsigned long scq_flags, rcq_flags;
+
+ /* Clean up cqes */
+ get_cqs(qp, &scq, &rcq);
+ pvrdma_lock_cqs(scq, rcq, &scq_flags, &rcq_flags);
+
+ _pvrdma_flush_cqe(qp, scq);
+ if (scq != rcq)
+ _pvrdma_flush_cqe(qp, rcq);
+
+ pvrdma_unlock_cqs(scq, rcq, &scq_flags, &rcq_flags);
+
+ /*
+ * Reset queuepair. The checks are because usermode queuepairs won't
+ * have kernel ringstates.
+ */
+ if (qp->rq.ring) {
+ atomic_set(&qp->rq.ring->cons_head, 0);
+ atomic_set(&qp->rq.ring->prod_tail, 0);
+ }
+ if (qp->sq.ring) {
+ atomic_set(&qp->sq.ring->cons_head, 0);
+ atomic_set(&qp->sq.ring->prod_tail, 0);
+ }
+}
+
+static int pvrdma_set_rq_size(struct pvrdma_dev *dev,
+ struct ib_qp_cap *req_cap,
+ struct pvrdma_qp *qp)
+{
+ if (req_cap->max_recv_wr > dev->dsr->caps.max_qp_wr ||
+ req_cap->max_recv_sge > dev->dsr->caps.max_sge) {
+ dev_warn(&dev->pdev->dev, "recv queue size invalid\n");
+ return -EINVAL;
+ }
+
+ qp->rq.wqe_cnt = roundup_pow_of_two(max(1U, req_cap->max_recv_wr));
+ qp->rq.max_sg = roundup_pow_of_two(max(1U, req_cap->max_recv_sge));
+
+ /* Write back */
+ req_cap->max_recv_wr = qp->rq.wqe_cnt;
+ req_cap->max_recv_sge = qp->rq.max_sg;
+
+ qp->rq.wqe_size = roundup_pow_of_two(sizeof(struct pvrdma_rq_wqe_hdr) +
+ sizeof(struct pvrdma_sge) *
+ qp->rq.max_sg);
+ qp->npages_recv = (qp->rq.wqe_cnt * qp->rq.wqe_size + PAGE_SIZE - 1) /
+ PAGE_SIZE;
+
+ return 0;
+}
+
+static int pvrdma_set_sq_size(struct pvrdma_dev *dev, struct ib_qp_cap *req_cap,
+ enum ib_qp_type type, struct pvrdma_qp *qp)
+{
+ if (req_cap->max_send_wr > dev->dsr->caps.max_qp_wr ||
+ req_cap->max_send_sge > dev->dsr->caps.max_sge) {
+ dev_warn(&dev->pdev->dev, "send queue size invalid\n");
+ return -EINVAL;
+ }
+
+ qp->sq.wqe_cnt = roundup_pow_of_two(max(1U, req_cap->max_send_wr));
+ qp->sq.max_sg = roundup_pow_of_two(max(1U, req_cap->max_send_sge));
+
+ /* Write back */
+ req_cap->max_send_wr = qp->sq.wqe_cnt;
+ req_cap->max_send_sge = qp->sq.max_sg;
+
+ qp->sq.wqe_size = roundup_pow_of_two(sizeof(struct pvrdma_sq_wqe_hdr) +
+ sizeof(struct pvrdma_sge) *
+ qp->sq.max_sg);
+ /* Note: one extra page for the header. */
+ qp->npages_send = 1 + (qp->sq.wqe_cnt * qp->sq.wqe_size +
+ PAGE_SIZE - 1) / PAGE_SIZE;
+
+ return 0;
+}
+
+/**
+ * pvrdma_create_qp - create queue pair
+ * @pd: protection domain
+ * @init_attr: queue pair attributes
+ * @udata: user data
+ *
+ * @return: the ib_qp pointer on success, otherwise returns an errno.
+ */
+struct ib_qp *pvrdma_create_qp(struct ib_pd *pd,
+ struct ib_qp_init_attr *init_attr,
+ struct ib_udata *udata)
+{
+ struct pvrdma_qp *qp = NULL;
+ struct pvrdma_dev *dev = to_vdev(pd->device);
+ union pvrdma_cmd_req req;
+ union pvrdma_cmd_resp rsp;
+ struct pvrdma_cmd_create_qp *cmd = &req.create_qp;
+ struct pvrdma_cmd_create_qp_resp *resp = &rsp.create_qp_resp;
+ struct pvrdma_create_qp ucmd;
+ unsigned long flags;
+ int ret;
+
+ if (init_attr->create_flags) {
+ dev_warn(&dev->pdev->dev,
+ "invalid create queuepair flags %#x\n",
+ init_attr->create_flags);
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (init_attr->qp_type != IB_QPT_RC &&
+ init_attr->qp_type != IB_QPT_UD &&
+ init_attr->qp_type != IB_QPT_GSI) {
+ dev_warn(&dev->pdev->dev, "queuepair type %d not supported\n",
+ init_attr->qp_type);
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (!atomic_add_unless(&dev->num_qps, 1, dev->dsr->caps.max_qp))
+ return ERR_PTR(-ENOMEM);
+
+ switch (init_attr->qp_type) {
+ case IB_QPT_GSI:
+ if (init_attr->port_num == 0 ||
+ init_attr->port_num > pd->device->phys_port_cnt ||
+ udata) {
+ dev_warn(&dev->pdev->dev, "invalid queuepair attrs\n");
+ ret = -EINVAL;
+ goto err_qp;
+ }
+ /* fall through */
+ case IB_QPT_RC:
+ case IB_QPT_UD:
+ qp = kzalloc(sizeof(*qp), GFP_KERNEL);
+ if (!qp) {
+ ret = -ENOMEM;
+ goto err_qp;
+ }
+
+ spin_lock_init(&qp->sq.lock);
+ spin_lock_init(&qp->rq.lock);
+ mutex_init(&qp->mutex);
+ atomic_set(&qp->refcnt, 1);
+ init_waitqueue_head(&qp->wait);
+
+ qp->state = IB_QPS_RESET;
+
+ if (pd->uobject && udata) {
+ dev_dbg(&dev->pdev->dev,
+ "create queuepair from user space\n");
+
+ if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) {
+ ret = -EFAULT;
+ goto err_qp;
+ }
+
+ /* set qp->sq.wqe_cnt, shift, buf_size.. */
+ qp->rumem = ib_umem_get(pd->uobject->context,
+ ucmd.rbuf_addr,
+ ucmd.rbuf_size, 0, 0);
+ if (IS_ERR(qp->rumem)) {
+ ret = PTR_ERR(qp->rumem);
+ goto err_qp;
+ }
+
+ qp->sumem = ib_umem_get(pd->uobject->context,
+ ucmd.sbuf_addr,
+ ucmd.sbuf_size, 0, 0);
+ if (IS_ERR(qp->sumem)) {
+ ib_umem_release(qp->rumem);
+ ret = PTR_ERR(qp->sumem);
+ goto err_qp;
+ }
+
+ qp->npages_send = ib_umem_page_count(qp->sumem);
+ qp->npages_recv = ib_umem_page_count(qp->rumem);
+ qp->npages = qp->npages_send + qp->npages_recv;
+ } else {
+ qp->is_kernel = true;
+
+ ret = pvrdma_set_sq_size(to_vdev(pd->device),
+ &init_attr->cap,
+ init_attr->qp_type, qp);
+ if (ret)
+ goto err_qp;
+
+ ret = pvrdma_set_rq_size(to_vdev(pd->device),
+ &init_attr->cap, qp);
+ if (ret)
+ goto err_qp;
+
+ qp->npages = qp->npages_send + qp->npages_recv;
+
+ /* Skip header page. */
+ qp->sq.offset = PAGE_SIZE;
+
+ /* Recv queue pages are after send pages. */
+ qp->rq.offset = qp->npages_send * PAGE_SIZE;
+ }
+
+ if (qp->npages < 0 || qp->npages > PVRDMA_PAGE_DIR_MAX_PAGES) {
+ dev_warn(&dev->pdev->dev,
+ "overflow pages in queuepair\n");
+ ret = -EINVAL;
+ goto err_umem;
+ }
+
+ ret = pvrdma_page_dir_init(dev, &qp->pdir, qp->npages,
+ qp->is_kernel);
+ if (ret) {
+ dev_warn(&dev->pdev->dev,
+ "could not allocate page directory\n");
+ goto err_umem;
+ }
+
+ if (!qp->is_kernel) {
+ pvrdma_page_dir_insert_umem(&qp->pdir, qp->sumem, 0);
+ pvrdma_page_dir_insert_umem(&qp->pdir, qp->rumem,
+ qp->npages_send);
+ } else {
+ /* Ring state is always the first page. */
+ qp->sq.ring = qp->pdir.pages[0];
+ qp->rq.ring = &qp->sq.ring[1];
+ }
+ break;
+ default:
+ ret = -EINVAL;
+ goto err_qp;
+ }
+
+ /* Not supported */
+ init_attr->cap.max_inline_data = 0;
+
+ memset(cmd, 0, sizeof(*cmd));
+ cmd->hdr.cmd = PVRDMA_CMD_CREATE_QP;
+ cmd->pd_handle = to_vpd(pd)->pd_handle;
+ cmd->send_cq_handle = to_vcq(init_attr->send_cq)->cq_handle;
+ cmd->recv_cq_handle = to_vcq(init_attr->recv_cq)->cq_handle;
+ cmd->max_send_wr = init_attr->cap.max_send_wr;
+ cmd->max_recv_wr = init_attr->cap.max_recv_wr;
+ cmd->max_send_sge = init_attr->cap.max_send_sge;
+ cmd->max_recv_sge = init_attr->cap.max_recv_sge;
+ cmd->max_inline_data = init_attr->cap.max_inline_data;
+ cmd->sq_sig_all = (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR) ? 1 : 0;
+ cmd->qp_type = ib_qp_type_to_pvrdma(init_attr->qp_type);
+ cmd->access_flags = IB_ACCESS_LOCAL_WRITE;
+ cmd->total_chunks = qp->npages;
+ cmd->send_chunks = qp->npages_send - 1;
+ cmd->pdir_dma = qp->pdir.dir_dma;
+
+ dev_dbg(&dev->pdev->dev, "create queuepair with %d, %d, %d, %d\n",
+ cmd->max_send_wr, cmd->max_recv_wr, cmd->max_send_sge,
+ cmd->max_recv_sge);
+
+ ret = pvrdma_cmd_post(dev, &req, &rsp, PVRDMA_CMD_CREATE_QP_RESP);
+ if (ret < 0) {
+ dev_warn(&dev->pdev->dev,
+ "could not create queuepair, error: %d\n", ret);
+ goto err_pdir;
+ }
+
+ /* max_send_wr/_recv_wr/_send_sge/_recv_sge/_inline_data */
+ qp->qp_handle = resp->qpn;
+ qp->port = init_attr->port_num;
+ qp->ibqp.qp_num = resp->qpn;
+ spin_lock_irqsave(&dev->qp_tbl_lock, flags);
+ dev->qp_tbl[qp->qp_handle % dev->dsr->caps.max_qp] = qp;
+ spin_unlock_irqrestore(&dev->qp_tbl_lock, flags);
+
+ return &qp->ibqp;
+
+err_pdir:
+ pvrdma_page_dir_cleanup(dev, &qp->pdir);
+err_umem:
+ if (pd->uobject && udata) {
+ if (qp->rumem)
+ ib_umem_release(qp->rumem);
+ if (qp->sumem)
+ ib_umem_release(qp->sumem);
+ }
+err_qp:
+ kfree(qp);
+ atomic_dec(&dev->num_qps);
+
+ return ERR_PTR(ret);
+}
+
+static void pvrdma_free_qp(struct pvrdma_qp *qp)
+{
+ struct pvrdma_dev *dev = to_vdev(qp->ibqp.device);
+ struct pvrdma_cq *scq;
+ struct pvrdma_cq *rcq;
+ unsigned long flags, scq_flags, rcq_flags;
+
+ /* In case cq is polling */
+ get_cqs(qp, &scq, &rcq);
+ pvrdma_lock_cqs(scq, rcq, &scq_flags, &rcq_flags);
+
+ _pvrdma_flush_cqe(qp, scq);
+ if (scq != rcq)
+ _pvrdma_flush_cqe(qp, rcq);
+
+ spin_lock_irqsave(&dev->qp_tbl_lock, flags);
+ dev->qp_tbl[qp->qp_handle] = NULL;
+ spin_unlock_irqrestore(&dev->qp_tbl_lock, flags);
+
+ pvrdma_unlock_cqs(scq, rcq, &scq_flags, &rcq_flags);
+
+ atomic_dec(&qp->refcnt);
+ wait_event(qp->wait, !atomic_read(&qp->refcnt));
+
+ pvrdma_page_dir_cleanup(dev, &qp->pdir);
+
+ kfree(qp);
+
+ atomic_dec(&dev->num_qps);
+}
+
+/**
+ * pvrdma_destroy_qp - destroy a queue pair
+ * @qp: the queue pair to destroy
+ *
+ * @return: 0 on success.
+ */
+int pvrdma_destroy_qp(struct ib_qp *qp)
+{
+ struct pvrdma_qp *vqp = to_vqp(qp);
+ union pvrdma_cmd_req req;
+ struct pvrdma_cmd_destroy_qp *cmd = &req.destroy_qp;
+ int ret;
+
+ memset(cmd, 0, sizeof(*cmd));
+ cmd->hdr.cmd = PVRDMA_CMD_DESTROY_QP;
+ cmd->qp_handle = vqp->qp_handle;
+
+ ret = pvrdma_cmd_post(to_vdev(qp->device), &req, NULL, 0);
+ if (ret < 0)
+ dev_warn(&to_vdev(qp->device)->pdev->dev,
+ "destroy queuepair failed, error: %d\n", ret);
+
+ pvrdma_free_qp(vqp);
+
+ return 0;
+}
+
+/**
+ * pvrdma_modify_qp - modify queue pair attributes
+ * @ibqp: the queue pair
+ * @attr: the new queue pair's attributes
+ * @attr_mask: attributes mask
+ * @udata: user data
+ *
+ * @returns 0 on success, otherwise returns an errno.
+ */
+int pvrdma_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
+ int attr_mask, struct ib_udata *udata)
+{
+ struct pvrdma_dev *dev = to_vdev(ibqp->device);
+ struct pvrdma_qp *qp = to_vqp(ibqp);
+ union pvrdma_cmd_req req;
+ union pvrdma_cmd_resp rsp;
+ struct pvrdma_cmd_modify_qp *cmd = &req.modify_qp;
+ int cur_state, next_state;
+ int ret;
+
+ /* Sanity checking. Should need lock here */
+ mutex_lock(&qp->mutex);
+ cur_state = (attr_mask & IB_QP_CUR_STATE) ? attr->cur_qp_state :
+ qp->state;
+ next_state = (attr_mask & IB_QP_STATE) ? attr->qp_state : cur_state;
+
+ if (!ib_modify_qp_is_ok(cur_state, next_state, ibqp->qp_type,
+ attr_mask, IB_LINK_LAYER_ETHERNET)) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (attr_mask & IB_QP_PORT) {
+ if (attr->port_num == 0 ||
+ attr->port_num > ibqp->device->phys_port_cnt) {
+ ret = -EINVAL;
+ goto out;
+ }
+ }
+
+ if (attr_mask & IB_QP_MIN_RNR_TIMER) {
+ if (attr->min_rnr_timer > 31) {
+ ret = -EINVAL;
+ goto out;
+ }
+ }
+
+ if (attr_mask & IB_QP_PKEY_INDEX) {
+ if (attr->pkey_index >= dev->dsr->caps.max_pkeys) {
+ ret = -EINVAL;
+ goto out;
+ }
+ }
+
+ if (attr_mask & IB_QP_QKEY)
+ qp->qkey = attr->qkey;
+
+ if (cur_state == next_state && cur_state == IB_QPS_RESET) {
+ ret = 0;
+ goto out;
+ }
+
+ qp->state = next_state;
+ memset(cmd, 0, sizeof(*cmd));
+ cmd->hdr.cmd = PVRDMA_CMD_MODIFY_QP;
+ cmd->qp_handle = qp->qp_handle;
+ cmd->attr_mask = ib_qp_attr_mask_to_pvrdma(attr_mask);
+ cmd->attrs.qp_state = ib_qp_state_to_pvrdma(attr->qp_state);
+ cmd->attrs.cur_qp_state =
+ ib_qp_state_to_pvrdma(attr->cur_qp_state);
+ cmd->attrs.path_mtu = ib_mtu_to_pvrdma(attr->path_mtu);
+ cmd->attrs.path_mig_state =
+ ib_mig_state_to_pvrdma(attr->path_mig_state);
+ cmd->attrs.qkey = attr->qkey;
+ cmd->attrs.rq_psn = attr->rq_psn;
+ cmd->attrs.sq_psn = attr->sq_psn;
+ cmd->attrs.dest_qp_num = attr->dest_qp_num;
+ cmd->attrs.qp_access_flags =
+ ib_access_flags_to_pvrdma(attr->qp_access_flags);
+ cmd->attrs.pkey_index = attr->pkey_index;
+ cmd->attrs.alt_pkey_index = attr->alt_pkey_index;
+ cmd->attrs.en_sqd_async_notify = attr->en_sqd_async_notify;
+ cmd->attrs.sq_draining = attr->sq_draining;
+ cmd->attrs.max_rd_atomic = attr->max_rd_atomic;
+ cmd->attrs.max_dest_rd_atomic = attr->max_dest_rd_atomic;
+ cmd->attrs.min_rnr_timer = attr->min_rnr_timer;
+ cmd->attrs.port_num = attr->port_num;
+ cmd->attrs.timeout = attr->timeout;
+ cmd->attrs.retry_cnt = attr->retry_cnt;
+ cmd->attrs.rnr_retry = attr->rnr_retry;
+ cmd->attrs.alt_port_num = attr->alt_port_num;
+ cmd->attrs.alt_timeout = attr->alt_timeout;
+ ib_qp_cap_to_pvrdma(&cmd->attrs.cap, &attr->cap);
+ ib_ah_attr_to_pvrdma(&cmd->attrs.ah_attr, &attr->ah_attr);
+ ib_ah_attr_to_pvrdma(&cmd->attrs.alt_ah_attr, &attr->alt_ah_attr);
+
+ ret = pvrdma_cmd_post(dev, &req, &rsp, PVRDMA_CMD_MODIFY_QP_RESP);
+ if (ret < 0) {
+ dev_warn(&dev->pdev->dev,
+ "could not modify queuepair, error: %d\n", ret);
+ } else if (rsp.hdr.err > 0) {
+ dev_warn(&dev->pdev->dev,
+ "cannot modify queuepair, error: %d\n", rsp.hdr.err);
+ ret = -EINVAL;
+ }
+
+ if (ret == 0 && next_state == IB_QPS_RESET)
+ pvrdma_reset_qp(qp);
+
+out:
+ mutex_unlock(&qp->mutex);
+
+ return ret;
+}
+
+static inline void *get_sq_wqe(struct pvrdma_qp *qp, int n)
+{
+ return pvrdma_page_dir_get_ptr(&qp->pdir,
+ qp->sq.offset + n * qp->sq.wqe_size);
+}
+
+static inline void *get_rq_wqe(struct pvrdma_qp *qp, int n)
+{
+ return pvrdma_page_dir_get_ptr(&qp->pdir,
+ qp->rq.offset + n * qp->rq.wqe_size);
+}
+
+static int set_reg_seg(struct pvrdma_sq_wqe_hdr *wqe_hdr, struct ib_reg_wr *wr)
+{
+ struct pvrdma_user_mr *mr = to_vmr(wr->mr);
+
+ wqe_hdr->wr.fast_reg.iova_start = mr->ibmr.iova;
+ wqe_hdr->wr.fast_reg.pl_pdir_dma = mr->pdir.dir_dma;
+ wqe_hdr->wr.fast_reg.page_shift = mr->page_shift;
+ wqe_hdr->wr.fast_reg.page_list_len = mr->npages;
+ wqe_hdr->wr.fast_reg.length = mr->ibmr.length;
+ wqe_hdr->wr.fast_reg.access_flags = wr->access;
+ wqe_hdr->wr.fast_reg.rkey = wr->key;
+
+ return pvrdma_page_dir_insert_page_list(&mr->pdir, mr->pages,
+ mr->npages);
+}
+
+/**
+ * pvrdma_post_send - post send work request entries on a QP
+ * @ibqp: the QP
+ * @wr: work request list to post
+ * @bad_wr: the first bad WR returned
+ *
+ * @return: 0 on success, otherwise errno returned.
+ */
+int pvrdma_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
+ struct ib_send_wr **bad_wr)
+{
+ struct pvrdma_qp *qp = to_vqp(ibqp);
+ struct pvrdma_dev *dev = to_vdev(ibqp->device);
+ unsigned long flags;
+ struct pvrdma_sq_wqe_hdr *wqe_hdr;
+ struct pvrdma_sge *sge;
+ int i, index;
+ int nreq;
+ int ret;
+
+ /*
+ * In states lower than RTS, we can fail immediately. In other states,
+ * just post and let the device figure it out.
+ */
+ if (qp->state < IB_QPS_RTS) {
+ *bad_wr = wr;
+ return -EINVAL;
+ }
+
+ spin_lock_irqsave(&qp->sq.lock, flags);
+
+ index = pvrdma_idx(&qp->sq.ring->prod_tail, qp->sq.wqe_cnt);
+ for (nreq = 0; wr; nreq++, wr = wr->next) {
+ unsigned int tail;
+
+ if (unlikely(!pvrdma_idx_ring_has_space(
+ qp->sq.ring, qp->sq.wqe_cnt, &tail))) {
+ dev_warn_ratelimited(&dev->pdev->dev,
+ "send queue is full\n");
+ *bad_wr = wr;
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ if (unlikely(wr->num_sge > qp->sq.max_sg || wr->num_sge < 0)) {
+ dev_warn_ratelimited(&dev->pdev->dev,
+ "send SGE overflow\n");
+ *bad_wr = wr;
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (unlikely(wr->opcode < 0)) {
+ dev_warn_ratelimited(&dev->pdev->dev,
+ "invalid send opcode\n");
+ *bad_wr = wr;
+ ret = -EINVAL;
+ goto out;
+ }
+
+ /*
+ * Only support UD, RC.
+ * Need to check opcode table for thorough checking.
+ * opcode _UD _UC _RC
+ * _SEND x x x
+ * _SEND_WITH_IMM x x x
+ * _RDMA_WRITE x x
+ * _RDMA_WRITE_WITH_IMM x x
+ * _LOCAL_INV x x
+ * _SEND_WITH_INV x x
+ * _RDMA_READ x
+ * _ATOMIC_CMP_AND_SWP x
+ * _ATOMIC_FETCH_AND_ADD x
+ * _MASK_ATOMIC_CMP_AND_SWP x
+ * _MASK_ATOMIC_FETCH_AND_ADD x
+ * _REG_MR x
+ *
+ */
+ if (qp->ibqp.qp_type != IB_QPT_UD &&
+ qp->ibqp.qp_type != IB_QPT_RC &&
+ wr->opcode != IB_WR_SEND) {
+ dev_warn_ratelimited(&dev->pdev->dev,
+ "unsupported queuepair type\n");
+ *bad_wr = wr;
+ ret = -EINVAL;
+ goto out;
+ } else if (qp->ibqp.qp_type == IB_QPT_UD ||
+ qp->ibqp.qp_type == IB_QPT_GSI) {
+ if (wr->opcode != IB_WR_SEND &&
+ wr->opcode != IB_WR_SEND_WITH_IMM) {
+ dev_warn_ratelimited(&dev->pdev->dev,
+ "invalid send opcode\n");
+ *bad_wr = wr;
+ ret = -EINVAL;
+ goto out;
+ }
+ }
+
+ wqe_hdr = (struct pvrdma_sq_wqe_hdr *)get_sq_wqe(qp, index);
+ memset(wqe_hdr, 0, sizeof(*wqe_hdr));
+ wqe_hdr->wr_id = wr->wr_id;
+ wqe_hdr->num_sge = wr->num_sge;
+ wqe_hdr->opcode = ib_wr_opcode_to_pvrdma(wr->opcode);
+ wqe_hdr->send_flags = ib_send_flags_to_pvrdma(wr->send_flags);
+ if (wr->opcode == IB_WR_SEND_WITH_IMM ||
+ wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM)
+ wqe_hdr->ex.imm_data = wr->ex.imm_data;
+
+ switch (qp->ibqp.qp_type) {
+ case IB_QPT_GSI:
+ case IB_QPT_UD:
+ if (unlikely(!ud_wr(wr)->ah)) {
+ dev_warn_ratelimited(&dev->pdev->dev,
+ "invalid address handle\n");
+ *bad_wr = wr;
+ ret = -EINVAL;
+ goto out;
+ }
+
+ /*
+ * Use qkey from qp context if high order bit set,
+ * otherwise from work request.
+ */
+ wqe_hdr->wr.ud.remote_qpn = ud_wr(wr)->remote_qpn;
+ wqe_hdr->wr.ud.remote_qkey =
+ ud_wr(wr)->remote_qkey & 0x80000000 ?
+ qp->qkey : ud_wr(wr)->remote_qkey;
+ wqe_hdr->wr.ud.av = to_vah(ud_wr(wr)->ah)->av;
+
+ break;
+ case IB_QPT_RC:
+ switch (wr->opcode) {
+ case IB_WR_RDMA_READ:
+ case IB_WR_RDMA_WRITE:
+ case IB_WR_RDMA_WRITE_WITH_IMM:
+ wqe_hdr->wr.rdma.remote_addr =
+ rdma_wr(wr)->remote_addr;
+ wqe_hdr->wr.rdma.rkey = rdma_wr(wr)->rkey;
+ break;
+ case IB_WR_LOCAL_INV:
+ case IB_WR_SEND_WITH_INV:
+ wqe_hdr->ex.invalidate_rkey =
+ wr->ex.invalidate_rkey;
+ break;
+ case IB_WR_ATOMIC_CMP_AND_SWP:
+ case IB_WR_ATOMIC_FETCH_AND_ADD:
+ wqe_hdr->wr.atomic.remote_addr =
+ atomic_wr(wr)->remote_addr;
+ wqe_hdr->wr.atomic.rkey = atomic_wr(wr)->rkey;
+ wqe_hdr->wr.atomic.compare_add =
+ atomic_wr(wr)->compare_add;
+ if (wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP)
+ wqe_hdr->wr.atomic.swap =
+ atomic_wr(wr)->swap;
+ break;
+ case IB_WR_REG_MR:
+ ret = set_reg_seg(wqe_hdr, reg_wr(wr));
+ if (ret < 0) {
+ dev_warn_ratelimited(&dev->pdev->dev,
+ "Failed to set fast register work request\n");
+ *bad_wr = wr;
+ goto out;
+ }
+ break;
+ default:
+ break;
+ }
+
+ break;
+ default:
+ dev_warn_ratelimited(&dev->pdev->dev,
+ "invalid queuepair type\n");
+ ret = -EINVAL;
+ *bad_wr = wr;
+ goto out;
+ }
+
+ sge = (struct pvrdma_sge *)(wqe_hdr + 1);
+ for (i = 0; i < wr->num_sge; i++) {
+ /* Need to check wqe_size 0 or max size */
+ sge->addr = wr->sg_list[i].addr;
+ sge->length = wr->sg_list[i].length;
+ sge->lkey = wr->sg_list[i].lkey;
+ sge++;
+ }
+
+ /* Make sure wqe is written before index update */
+ smp_wmb();
+
+ index++;
+ if (unlikely(index >= qp->sq.wqe_cnt))
+ index = 0;
+ /* Update shared sq ring */
+ pvrdma_idx_ring_inc(&qp->sq.ring->prod_tail,
+ qp->sq.wqe_cnt);
+ }
+
+ ret = 0;
+
+out:
+ spin_unlock_irqrestore(&qp->sq.lock, flags);
+
+ if (!ret)
+ pvrdma_write_uar_qp(dev, PVRDMA_UAR_QP_SEND | qp->qp_handle);
+
+ return ret;
+}
+
+/**
+ * pvrdma_post_receive - post receive work request entries on a QP
+ * @ibqp: the QP
+ * @wr: the work request list to post
+ * @bad_wr: the first bad WR returned
+ *
+ * @return: 0 on success, otherwise errno returned.
+ */
+int pvrdma_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
+ struct ib_recv_wr **bad_wr)
+{
+ struct pvrdma_dev *dev = to_vdev(ibqp->device);
+ unsigned long flags;
+ struct pvrdma_qp *qp = to_vqp(ibqp);
+ struct pvrdma_rq_wqe_hdr *wqe_hdr;
+ struct pvrdma_sge *sge;
+ int index, nreq;
+ int ret = 0;
+ int i;
+
+ /*
+ * In the RESET state, we can fail immediately. For other states,
+ * just post and let the device figure it out.
+ */
+ if (qp->state == IB_QPS_RESET) {
+ *bad_wr = wr;
+ return -EINVAL;
+ }
+
+ spin_lock_irqsave(&qp->rq.lock, flags);
+
+ index = pvrdma_idx(&qp->rq.ring->prod_tail, qp->rq.wqe_cnt);
+ for (nreq = 0; wr; nreq++, wr = wr->next) {
+ unsigned int tail;
+
+ if (unlikely(wr->num_sge > qp->rq.max_sg ||
+ wr->num_sge < 0)) {
+ ret = -EINVAL;
+ *bad_wr = wr;
+ dev_warn_ratelimited(&dev->pdev->dev,
+ "recv SGE overflow\n");
+ goto out;
+ }
+
+ if (unlikely(!pvrdma_idx_ring_has_space(
+ qp->rq.ring, qp->rq.wqe_cnt, &tail))) {
+ ret = -ENOMEM;
+ *bad_wr = wr;
+ dev_warn_ratelimited(&dev->pdev->dev,
+ "recv queue full\n");
+ goto out;
+ }
+
+ wqe_hdr = (struct pvrdma_rq_wqe_hdr *)get_rq_wqe(qp, index);
+ wqe_hdr->wr_id = wr->wr_id;
+ wqe_hdr->num_sge = wr->num_sge;
+ wqe_hdr->total_len = 0;
+
+ sge = (struct pvrdma_sge *)(wqe_hdr + 1);
+ for (i = 0; i < wr->num_sge; i++) {
+ sge->addr = wr->sg_list[i].addr;
+ sge->length = wr->sg_list[i].length;
+ sge->lkey = wr->sg_list[i].lkey;
+ sge++;
+ }
+
+ /* Make sure wqe is written before index update */
+ smp_wmb();
+
+ index++;
+ if (unlikely(index >= qp->rq.wqe_cnt))
+ index = 0;
+ /* Update shared rq ring */
+ pvrdma_idx_ring_inc(&qp->rq.ring->prod_tail,
+ qp->rq.wqe_cnt);
+ }
+
+ spin_unlock_irqrestore(&qp->rq.lock, flags);
+
+ pvrdma_write_uar_qp(dev, PVRDMA_UAR_QP_RECV | qp->qp_handle);
+
+ return ret;
+
+out:
+ spin_unlock_irqrestore(&qp->rq.lock, flags);
+
+ return ret;
+}
+
+/**
+ * pvrdma_query_qp - query a queue pair's attributes
+ * @ibqp: the queue pair to query
+ * @attr: the queue pair's attributes
+ * @attr_mask: attributes mask
+ * @init_attr: initial queue pair attributes
+ *
+ * @returns 0 on success, otherwise returns an errno.
+ */
+int pvrdma_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
+ int attr_mask, struct ib_qp_init_attr *init_attr)
+{
+ struct pvrdma_dev *dev = to_vdev(ibqp->device);
+ struct pvrdma_qp *qp = to_vqp(ibqp);
+ union pvrdma_cmd_req req;
+ union pvrdma_cmd_resp rsp;
+ struct pvrdma_cmd_query_qp *cmd = &req.query_qp;
+ struct pvrdma_cmd_query_qp_resp *resp = &rsp.query_qp_resp;
+ int ret = 0;
+
+ mutex_lock(&qp->mutex);
+
+ if (qp->state == IB_QPS_RESET) {
+ attr->qp_state = IB_QPS_RESET;
+ goto out;
+ }
+
+ memset(cmd, 0, sizeof(*cmd));
+ cmd->hdr.cmd = PVRDMA_CMD_QUERY_QP;
+ cmd->qp_handle = qp->qp_handle;
+ cmd->attr_mask = ib_qp_attr_mask_to_pvrdma(attr_mask);
+
+ ret = pvrdma_cmd_post(dev, &req, &rsp, PVRDMA_CMD_QUERY_QP_RESP);
+ if (ret < 0) {
+ dev_warn(&dev->pdev->dev,
+ "could not query queuepair, error: %d\n", ret);
+ goto out;
+ }
+
+ attr->qp_state = pvrdma_qp_state_to_ib(resp->attrs.qp_state);
+ attr->cur_qp_state =
+ pvrdma_qp_state_to_ib(resp->attrs.cur_qp_state);
+ attr->path_mtu = pvrdma_mtu_to_ib(resp->attrs.path_mtu);
+ attr->path_mig_state =
+ pvrdma_mig_state_to_ib(resp->attrs.path_mig_state);
+ attr->qkey = resp->attrs.qkey;
+ attr->rq_psn = resp->attrs.rq_psn;
+ attr->sq_psn = resp->attrs.sq_psn;
+ attr->dest_qp_num = resp->attrs.dest_qp_num;
+ attr->qp_access_flags =
+ pvrdma_access_flags_to_ib(resp->attrs.qp_access_flags);
+ attr->pkey_index = resp->attrs.pkey_index;
+ attr->alt_pkey_index = resp->attrs.alt_pkey_index;
+ attr->en_sqd_async_notify = resp->attrs.en_sqd_async_notify;
+ attr->sq_draining = resp->attrs.sq_draining;
+ attr->max_rd_atomic = resp->attrs.max_rd_atomic;
+ attr->max_dest_rd_atomic = resp->attrs.max_dest_rd_atomic;
+ attr->min_rnr_timer = resp->attrs.min_rnr_timer;
+ attr->port_num = resp->attrs.port_num;
+ attr->timeout = resp->attrs.timeout;
+ attr->retry_cnt = resp->attrs.retry_cnt;
+ attr->rnr_retry = resp->attrs.rnr_retry;
+ attr->alt_port_num = resp->attrs.alt_port_num;
+ attr->alt_timeout = resp->attrs.alt_timeout;
+ pvrdma_qp_cap_to_ib(&attr->cap, &resp->attrs.cap);
+ pvrdma_ah_attr_to_ib(&attr->ah_attr, &resp->attrs.ah_attr);
+ pvrdma_ah_attr_to_ib(&attr->alt_ah_attr, &resp->attrs.alt_ah_attr);
+
+ qp->state = attr->qp_state;
+
+ ret = 0;
+
+out:
+ attr->cur_qp_state = attr->qp_state;
+
+ init_attr->event_handler = qp->ibqp.event_handler;
+ init_attr->qp_context = qp->ibqp.qp_context;
+ init_attr->send_cq = qp->ibqp.send_cq;
+ init_attr->recv_cq = qp->ibqp.recv_cq;
+ init_attr->srq = qp->ibqp.srq;
+ init_attr->xrcd = NULL;
+ init_attr->cap = attr->cap;
+ init_attr->sq_sig_type = 0;
+ init_attr->qp_type = qp->ibqp.qp_type;
+ init_attr->create_flags = 0;
+ init_attr->port_num = qp->port;
+
+ mutex_unlock(&qp->mutex);
+ return ret;
+}
--
2.7.4
^ permalink raw reply related
* [PATCH v5 13/16] IB/pvrdma: Add the main driver module for PVRDMA
From: Adit Ranadive @ 2016-09-24 23:21 UTC (permalink / raw)
To: dledford, linux-rdma, pv-drivers
Cc: Adit Ranadive, netdev, linux-pci, jhansen, asarwade, georgezhang,
bryantan
In-Reply-To: <cover.1474759181.git.aditr@vmware.com>
This patch adds the support to register a RDMA device with the kernel RDMA
stack as well as a kernel module. This also initializes the underlying
virtual PCI device.
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Jorgen Hansen <jhansen@vmware.com>
Reviewed-by: George Zhang <georgezhang@vmware.com>
Reviewed-by: Aditya Sarwade <asarwade@vmware.com>
Reviewed-by: Bryan Tan <bryantan@vmware.com>
Signed-off-by: Adit Ranadive <aditr@vmware.com>
---
Changes v4->v5:
- Removed two unnecessary lines.
- Updated include for headers in UAPI folder.
- Update to pvrdma_cmd_post for add/delete GIDs.
- Add error code in dev_warn if pvrdma_cmd_post failed.
Changes v3->v4:
- Fixed some checkpatch warnings.
- Added support for new get_dev_fw_str API.
- Added event workqueue for netdevice events.
- Restructured the pvrdma_pci_remove function a little bit.
Changes v2->v3:
- Removed boolean in pvrdma_cmd_post.
Changes v1->v2:
- Addressed 32-bit build errors
- Cosmetic change to avoid if else in intr0_handler
- Removed unnecessary return assignment.
---
drivers/infiniband/hw/pvrdma/pvrdma_main.c | 1220 ++++++++++++++++++++++++++++
1 file changed, 1220 insertions(+)
create mode 100644 drivers/infiniband/hw/pvrdma/pvrdma_main.c
diff --git a/drivers/infiniband/hw/pvrdma/pvrdma_main.c b/drivers/infiniband/hw/pvrdma/pvrdma_main.c
new file mode 100644
index 0000000..94cbbb9
--- /dev/null
+++ b/drivers/infiniband/hw/pvrdma/pvrdma_main.c
@@ -0,0 +1,1220 @@
+/*
+ * Copyright (c) 2012-2016 VMware, Inc. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of EITHER the GNU General Public License
+ * version 2 as published by the Free Software Foundation or the BSD
+ * 2-Clause License. This program is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License version 2 for more details at
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program available in the file COPYING in the main
+ * directory of this source tree.
+ *
+ * The BSD 2-Clause License
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/errno.h>
+#include <linux/inetdevice.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <rdma/ib_addr.h>
+#include <rdma/ib_smi.h>
+#include <rdma/ib_user_verbs.h>
+#include <net/addrconf.h>
+#include <rdma/pvrdma-abi.h>
+
+#include "pvrdma.h"
+
+#define DRV_NAME "pvrdma"
+#define DRV_VERSION "1.0"
+#define DRV_RELDATE "January 1, 2013"
+
+static const char pvrdma_version[] =
+ DRV_NAME ": PVRDMA InfiniBand driver v"
+ DRV_VERSION " (" DRV_RELDATE ")\n";
+
+static DEFINE_MUTEX(pvrdma_device_list_lock);
+static LIST_HEAD(pvrdma_device_list);
+static struct workqueue_struct *event_wq;
+
+static int pvrdma_add_gid(struct ib_device *ibdev,
+ u8 port_num,
+ unsigned int index,
+ const union ib_gid *gid,
+ const struct ib_gid_attr *attr,
+ void **context);
+static int pvrdma_del_gid(struct ib_device *ibdev,
+ u8 port_num,
+ unsigned int index,
+ void **context);
+
+
+static ssize_t show_hca(struct device *device, struct device_attribute *attr,
+ char *buf)
+{
+ return sprintf(buf, "PVRDMA%s\n", DRV_VERSION);
+}
+
+static ssize_t show_rev(struct device *device, struct device_attribute *attr,
+ char *buf)
+{
+ return sprintf(buf, "%d\n", PVRDMA_REV_ID);
+}
+
+static ssize_t show_board(struct device *device, struct device_attribute *attr,
+ char *buf)
+{
+ return sprintf(buf, "%d\n", PVRDMA_BOARD_ID);
+}
+
+static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
+static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
+static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
+
+static struct device_attribute *pvrdma_class_attributes[] = {
+ &dev_attr_hw_rev,
+ &dev_attr_hca_type,
+ &dev_attr_board_id
+};
+
+static void pvrdma_get_fw_ver_str(struct ib_device *device, char *str,
+ size_t str_len)
+{
+ struct pvrdma_dev *dev =
+ container_of(device, struct pvrdma_dev, ib_dev);
+ snprintf(str, str_len, "%d.%d.%d\n",
+ (int) (dev->dsr->caps.fw_ver >> 32),
+ (int) (dev->dsr->caps.fw_ver >> 16) & 0xffff,
+ (int) dev->dsr->caps.fw_ver & 0xffff);
+}
+
+static int pvrdma_init_device(struct pvrdma_dev *dev)
+{
+ /* Initialize some device related stuff */
+ spin_lock_init(&dev->cmd_lock);
+ sema_init(&dev->cmd_sema, 1);
+ atomic_set(&dev->num_qps, 0);
+ atomic_set(&dev->num_cqs, 0);
+ atomic_set(&dev->num_pds, 0);
+ atomic_set(&dev->num_ahs, 0);
+
+ return 0;
+}
+
+static int pvrdma_port_immutable(struct ib_device *ibdev, u8 port_num,
+ struct ib_port_immutable *immutable)
+{
+ struct ib_port_attr attr;
+ int err;
+
+ err = pvrdma_query_port(ibdev, port_num, &attr);
+ if (err)
+ return err;
+
+ immutable->pkey_tbl_len = attr.pkey_tbl_len;
+ immutable->gid_tbl_len = attr.gid_tbl_len;
+ immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
+ immutable->max_mad_size = IB_MGMT_MAD_SIZE;
+ return 0;
+}
+
+static struct net_device *pvrdma_get_netdev(struct ib_device *ibdev,
+ u8 port_num)
+{
+ struct net_device *netdev;
+ struct pvrdma_dev *dev = to_vdev(ibdev);
+
+ if (port_num != 1)
+ return NULL;
+
+ rcu_read_lock();
+ netdev = dev->netdev;
+ if (netdev)
+ dev_hold(netdev);
+ rcu_read_unlock();
+
+ return netdev;
+}
+
+static int pvrdma_register_device(struct pvrdma_dev *dev)
+{
+ int ret = -1;
+ int i = 0;
+
+ strlcpy(dev->ib_dev.name, "pvrdma%d", IB_DEVICE_NAME_MAX);
+ dev->ib_dev.node_guid = dev->dsr->caps.node_guid;
+ dev->sys_image_guid = dev->dsr->caps.sys_image_guid;
+ dev->flags = 0;
+ dev->ib_dev.owner = THIS_MODULE;
+ dev->ib_dev.num_comp_vectors = 1;
+ dev->ib_dev.dma_device = &dev->pdev->dev;
+ dev->ib_dev.uverbs_abi_ver = PVRDMA_UVERBS_ABI_VERSION;
+ dev->ib_dev.uverbs_cmd_mask =
+ (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
+ (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
+ (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
+ (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
+ (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
+ (1ull << IB_USER_VERBS_CMD_REG_MR) |
+ (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
+ (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
+ (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
+ (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
+ (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
+ (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
+ (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
+ (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
+ (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
+ (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
+ (1ull << IB_USER_VERBS_CMD_POST_SEND) |
+ (1ull << IB_USER_VERBS_CMD_POST_RECV) |
+ (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
+ (1ull << IB_USER_VERBS_CMD_DESTROY_AH);
+
+ dev->ib_dev.node_type = RDMA_NODE_IB_CA;
+ dev->ib_dev.phys_port_cnt = dev->dsr->caps.phys_port_cnt;
+
+ dev->ib_dev.query_device = pvrdma_query_device;
+ dev->ib_dev.query_port = pvrdma_query_port;
+ dev->ib_dev.query_gid = pvrdma_query_gid;
+ dev->ib_dev.query_pkey = pvrdma_query_pkey;
+ dev->ib_dev.modify_port = pvrdma_modify_port;
+ dev->ib_dev.alloc_ucontext = pvrdma_alloc_ucontext;
+ dev->ib_dev.dealloc_ucontext = pvrdma_dealloc_ucontext;
+ dev->ib_dev.mmap = pvrdma_mmap;
+ dev->ib_dev.alloc_pd = pvrdma_alloc_pd;
+ dev->ib_dev.dealloc_pd = pvrdma_dealloc_pd;
+ dev->ib_dev.create_ah = pvrdma_create_ah;
+ dev->ib_dev.destroy_ah = pvrdma_destroy_ah;
+ dev->ib_dev.create_qp = pvrdma_create_qp;
+ dev->ib_dev.modify_qp = pvrdma_modify_qp;
+ dev->ib_dev.query_qp = pvrdma_query_qp;
+ dev->ib_dev.destroy_qp = pvrdma_destroy_qp;
+ dev->ib_dev.post_send = pvrdma_post_send;
+ dev->ib_dev.post_recv = pvrdma_post_recv;
+ dev->ib_dev.create_cq = pvrdma_create_cq;
+ dev->ib_dev.modify_cq = pvrdma_modify_cq;
+ dev->ib_dev.resize_cq = pvrdma_resize_cq;
+ dev->ib_dev.destroy_cq = pvrdma_destroy_cq;
+ dev->ib_dev.poll_cq = pvrdma_poll_cq;
+ dev->ib_dev.req_notify_cq = pvrdma_req_notify_cq;
+ dev->ib_dev.get_dma_mr = pvrdma_get_dma_mr;
+ dev->ib_dev.reg_user_mr = pvrdma_reg_user_mr;
+ dev->ib_dev.dereg_mr = pvrdma_dereg_mr;
+ dev->ib_dev.alloc_mr = pvrdma_alloc_mr;
+ dev->ib_dev.map_mr_sg = pvrdma_map_mr_sg;
+ dev->ib_dev.add_gid = pvrdma_add_gid;
+ dev->ib_dev.del_gid = pvrdma_del_gid;
+ dev->ib_dev.get_netdev = pvrdma_get_netdev;
+ dev->ib_dev.get_port_immutable = pvrdma_port_immutable;
+ dev->ib_dev.get_link_layer = pvrdma_port_link_layer;
+ dev->ib_dev.get_dev_fw_str = pvrdma_get_fw_ver_str;
+
+ mutex_init(&dev->port_mutex);
+ spin_lock_init(&dev->desc_lock);
+
+ dev->cq_tbl = kcalloc(dev->dsr->caps.max_cq, sizeof(void *),
+ GFP_KERNEL);
+ if (!dev->cq_tbl)
+ return ret;
+ spin_lock_init(&dev->cq_tbl_lock);
+
+ dev->qp_tbl = kcalloc(dev->dsr->caps.max_qp, sizeof(void *),
+ GFP_KERNEL);
+ if (!dev->qp_tbl)
+ goto err_cq_free;
+ spin_lock_init(&dev->qp_tbl_lock);
+
+ ret = ib_register_device(&dev->ib_dev, NULL);
+ if (ret)
+ goto err_qp_free;
+
+ for (i = 0; i < ARRAY_SIZE(pvrdma_class_attributes); ++i) {
+ ret = device_create_file(&dev->ib_dev.dev,
+ pvrdma_class_attributes[i]);
+ if (ret)
+ goto err_class;
+ }
+
+ dev->ib_active = true;
+
+ return 0;
+
+err_class:
+ ib_unregister_device(&dev->ib_dev);
+err_qp_free:
+ kfree(dev->qp_tbl);
+err_cq_free:
+ kfree(dev->cq_tbl);
+
+ return ret;
+}
+
+static irqreturn_t pvrdma_intr0_handler(int irq, void *dev_id)
+{
+ u32 icr = PVRDMA_INTR_CAUSE_RESPONSE;
+ struct pvrdma_dev *dev = dev_id;
+
+ dev_dbg(&dev->pdev->dev, "interrupt 0 (response) handler\n");
+
+ if (dev->intr.type != PVRDMA_INTR_TYPE_MSIX) {
+ /* Legacy intr */
+ icr = pvrdma_read_reg(dev, PVRDMA_REG_ICR);
+ if (icr == 0)
+ return IRQ_NONE;
+ }
+
+ if (icr == PVRDMA_INTR_CAUSE_RESPONSE)
+ complete(&dev->cmd_done);
+
+ return IRQ_HANDLED;
+}
+
+static void pvrdma_qp_event(struct pvrdma_dev *dev, u32 qpn, int type)
+{
+ struct pvrdma_qp *qp;
+ unsigned long flags;
+
+ spin_lock_irqsave(&dev->qp_tbl_lock, flags);
+ qp = dev->qp_tbl[qpn % dev->dsr->caps.max_qp];
+ if (qp)
+ atomic_inc(&qp->refcnt);
+ spin_unlock_irqrestore(&dev->qp_tbl_lock, flags);
+
+ if (qp && qp->ibqp.event_handler) {
+ struct ib_qp *ibqp = &qp->ibqp;
+ struct ib_event e;
+
+ e.device = ibqp->device;
+ e.element.qp = ibqp;
+ e.event = type; /* 1:1 mapping for now. */
+ ibqp->event_handler(&e, ibqp->qp_context);
+ }
+ if (qp) {
+ atomic_dec(&qp->refcnt);
+ if (atomic_read(&qp->refcnt) == 0)
+ wake_up(&qp->wait);
+ }
+}
+
+static void pvrdma_cq_event(struct pvrdma_dev *dev, u32 cqn, int type)
+{
+ struct pvrdma_cq *cq;
+ unsigned long flags;
+
+ spin_lock_irqsave(&dev->cq_tbl_lock, flags);
+ cq = dev->cq_tbl[cqn % dev->dsr->caps.max_cq];
+ if (cq)
+ atomic_inc(&cq->refcnt);
+ spin_unlock_irqrestore(&dev->cq_tbl_lock, flags);
+
+ if (cq && cq->ibcq.event_handler) {
+ struct ib_cq *ibcq = &cq->ibcq;
+ struct ib_event e;
+
+ e.device = ibcq->device;
+ e.element.cq = ibcq;
+ e.event = type; /* 1:1 mapping for now. */
+ ibcq->event_handler(&e, ibcq->cq_context);
+ }
+ if (cq) {
+ atomic_dec(&cq->refcnt);
+ if (atomic_read(&cq->refcnt) == 0)
+ wake_up(&cq->wait);
+ }
+}
+
+static void pvrdma_dispatch_event(struct pvrdma_dev *dev, int port,
+ enum ib_event_type event)
+{
+ struct ib_event ib_event;
+
+ memset(&ib_event, 0, sizeof(ib_event));
+ ib_event.device = &dev->ib_dev;
+ ib_event.element.port_num = port;
+ ib_event.event = event;
+ ib_dispatch_event(&ib_event);
+}
+
+static void pvrdma_dev_event(struct pvrdma_dev *dev, u8 port, int type)
+{
+ if (port < 1 || port > dev->dsr->caps.phys_port_cnt) {
+ dev_warn(&dev->pdev->dev, "event on port %d\n", port);
+ return;
+ }
+
+ pvrdma_dispatch_event(dev, port, type);
+}
+
+static inline struct pvrdma_eqe *get_eqe(struct pvrdma_dev *dev, unsigned int i)
+{
+ return (struct pvrdma_eqe *)pvrdma_page_dir_get_ptr(
+ &dev->async_pdir,
+ PAGE_SIZE +
+ sizeof(struct pvrdma_eqe) * i);
+}
+
+static irqreturn_t pvrdma_intr1_handler(int irq, void *dev_id)
+{
+ struct pvrdma_dev *dev = dev_id;
+ struct pvrdma_ring *ring = &dev->async_ring_state->rx;
+ int ring_slots = (dev->dsr->async_ring_pages.num_pages - 1) *
+ PAGE_SIZE / sizeof(struct pvrdma_eqe);
+ unsigned int head;
+
+ dev_dbg(&dev->pdev->dev, "interrupt 1 (async event) handler\n");
+
+ /*
+ * Don't process events until the IB device is registered. Otherwise
+ * we'll try to ib_dispatch_event() on an invalid device.
+ */
+ if (!dev->ib_active)
+ return IRQ_HANDLED;
+
+ while (pvrdma_idx_ring_has_data(ring, ring_slots, &head) > 0) {
+ struct pvrdma_eqe *eqe;
+
+ eqe = get_eqe(dev, head);
+
+ switch (eqe->type) {
+ case PVRDMA_EVENT_QP_FATAL:
+ case PVRDMA_EVENT_QP_REQ_ERR:
+ case PVRDMA_EVENT_QP_ACCESS_ERR:
+ case PVRDMA_EVENT_COMM_EST:
+ case PVRDMA_EVENT_SQ_DRAINED:
+ case PVRDMA_EVENT_PATH_MIG:
+ case PVRDMA_EVENT_PATH_MIG_ERR:
+ case PVRDMA_EVENT_QP_LAST_WQE_REACHED:
+ pvrdma_qp_event(dev, eqe->info, eqe->type);
+ break;
+
+ case PVRDMA_EVENT_CQ_ERR:
+ pvrdma_cq_event(dev, eqe->info, eqe->type);
+ break;
+
+ case PVRDMA_EVENT_SRQ_ERR:
+ case PVRDMA_EVENT_SRQ_LIMIT_REACHED:
+ break;
+
+ case PVRDMA_EVENT_PORT_ACTIVE:
+ case PVRDMA_EVENT_PORT_ERR:
+ case PVRDMA_EVENT_LID_CHANGE:
+ case PVRDMA_EVENT_PKEY_CHANGE:
+ case PVRDMA_EVENT_SM_CHANGE:
+ case PVRDMA_EVENT_CLIENT_REREGISTER:
+ case PVRDMA_EVENT_GID_CHANGE:
+ pvrdma_dev_event(dev, eqe->info, eqe->type);
+ break;
+
+ case PVRDMA_EVENT_DEVICE_FATAL:
+ pvrdma_dev_event(dev, 1, eqe->type);
+ break;
+
+ default:
+ break;
+ }
+
+ pvrdma_idx_ring_inc(&ring->cons_head, ring_slots);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static inline struct pvrdma_cqne *get_cqne(struct pvrdma_dev *dev,
+ unsigned int i)
+{
+ return (struct pvrdma_cqne *)pvrdma_page_dir_get_ptr(
+ &dev->cq_pdir,
+ PAGE_SIZE +
+ sizeof(struct pvrdma_cqne) * i);
+}
+
+static irqreturn_t pvrdma_intrx_handler(int irq, void *dev_id)
+{
+ struct pvrdma_dev *dev = dev_id;
+ struct pvrdma_ring *ring = &dev->cq_ring_state->rx;
+ int ring_slots = (dev->dsr->cq_ring_pages.num_pages - 1) * PAGE_SIZE /
+ sizeof(struct pvrdma_cqne);
+ unsigned int head;
+ unsigned long flags;
+
+ dev_dbg(&dev->pdev->dev, "interrupt x (completion) handler\n");
+
+ while (pvrdma_idx_ring_has_data(ring, ring_slots, &head) > 0) {
+ struct pvrdma_cqne *cqne;
+ struct pvrdma_cq *cq;
+
+ cqne = get_cqne(dev, head);
+ spin_lock_irqsave(&dev->cq_tbl_lock, flags);
+ cq = dev->cq_tbl[cqne->info % dev->dsr->caps.max_cq];
+ if (cq)
+ atomic_inc(&cq->refcnt);
+ spin_unlock_irqrestore(&dev->cq_tbl_lock, flags);
+
+ if (cq && cq->ibcq.comp_handler)
+ cq->ibcq.comp_handler(&cq->ibcq, cq->ibcq.cq_context);
+ if (cq) {
+ atomic_dec(&cq->refcnt);
+ if (atomic_read(&cq->refcnt))
+ wake_up(&cq->wait);
+ }
+ pvrdma_idx_ring_inc(&ring->cons_head, ring_slots);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static void pvrdma_disable_msi_all(struct pvrdma_dev *dev)
+{
+ if (dev->intr.type == PVRDMA_INTR_TYPE_MSIX)
+ pci_disable_msix(dev->pdev);
+ else if (dev->intr.type == PVRDMA_INTR_TYPE_MSI)
+ pci_disable_msi(dev->pdev);
+}
+
+static void pvrdma_free_irq(struct pvrdma_dev *dev)
+{
+ int i;
+
+ dev_dbg(&dev->pdev->dev, "freeing interrupts\n");
+
+ if (dev->intr.type == PVRDMA_INTR_TYPE_MSIX) {
+ for (i = 0; i < dev->intr.size; i++) {
+ if (dev->intr.enabled[i]) {
+ free_irq(dev->intr.msix_entry[i].vector, dev);
+ dev->intr.enabled[i] = 0;
+ }
+ }
+ } else if (dev->intr.type == PVRDMA_INTR_TYPE_INTX ||
+ dev->intr.type == PVRDMA_INTR_TYPE_MSI) {
+ free_irq(dev->pdev->irq, dev);
+ }
+}
+
+static void pvrdma_enable_intrs(struct pvrdma_dev *dev)
+{
+ dev_dbg(&dev->pdev->dev, "enable interrupts\n");
+ pvrdma_write_reg(dev, PVRDMA_REG_IMR, 0);
+}
+
+static void pvrdma_disable_intrs(struct pvrdma_dev *dev)
+{
+ dev_dbg(&dev->pdev->dev, "disable interrupts\n");
+ pvrdma_write_reg(dev, PVRDMA_REG_IMR, ~0);
+}
+
+static int pvrdma_enable_msix(struct pci_dev *pdev, struct pvrdma_dev *dev)
+{
+ int i;
+ int ret;
+
+ for (i = 0; i < PVRDMA_MAX_INTERRUPTS; i++) {
+ dev->intr.msix_entry[i].entry = i;
+ dev->intr.msix_entry[i].vector = i;
+
+ switch (i) {
+ case 0:
+ /* CMD ring handler */
+ dev->intr.handler[i] = pvrdma_intr0_handler;
+ break;
+ case 1:
+ /* Async event ring handler */
+ dev->intr.handler[i] = pvrdma_intr1_handler;
+ break;
+ default:
+ /* Completion queue handler */
+ dev->intr.handler[i] = pvrdma_intrx_handler;
+ break;
+ }
+ }
+
+ ret = pci_enable_msix(pdev, dev->intr.msix_entry,
+ PVRDMA_MAX_INTERRUPTS);
+ if (!ret) {
+ dev->intr.type = PVRDMA_INTR_TYPE_MSIX;
+ dev->intr.size = PVRDMA_MAX_INTERRUPTS;
+ } else if (ret > 0) {
+ ret = pci_enable_msix(pdev, dev->intr.msix_entry, ret);
+ if (!ret) {
+ dev->intr.type = PVRDMA_INTR_TYPE_MSIX;
+ dev->intr.size = ret;
+ } else {
+ dev->intr.size = 0;
+ }
+ }
+
+ dev_dbg(&pdev->dev, "using interrupt type %d, size %d\n",
+ dev->intr.type, dev->intr.size);
+
+ return ret;
+}
+
+static int pvrdma_alloc_intrs(struct pvrdma_dev *dev)
+{
+ int ret = 0;
+ int i;
+
+ if (pci_find_capability(dev->pdev, PCI_CAP_ID_MSIX) &&
+ pvrdma_enable_msix(dev->pdev, dev)) {
+ /* Try MSI */
+ ret = pci_enable_msi(dev->pdev);
+ if (!ret) {
+ dev->intr.type = PVRDMA_INTR_TYPE_MSI;
+ } else {
+ /* Legacy INTR */
+ dev->intr.type = PVRDMA_INTR_TYPE_INTX;
+ }
+ }
+
+ /* Request First IRQ */
+ switch (dev->intr.type) {
+ case PVRDMA_INTR_TYPE_INTX:
+ case PVRDMA_INTR_TYPE_MSI:
+ ret = request_irq(dev->pdev->irq, pvrdma_intr0_handler,
+ IRQF_SHARED, DRV_NAME, dev);
+ if (ret) {
+ dev_err(&dev->pdev->dev,
+ "failed to request interrupt\n");
+ goto disable_msi;
+ }
+ break;
+ case PVRDMA_INTR_TYPE_MSIX:
+ ret = request_irq(dev->intr.msix_entry[0].vector,
+ pvrdma_intr0_handler, 0, DRV_NAME, dev);
+ if (ret) {
+ dev_err(&dev->pdev->dev,
+ "failed to request interrupt 0\n");
+ goto disable_msi;
+ }
+ dev->intr.enabled[0] = 1;
+ break;
+ default:
+ /* Not reached */
+ break;
+ }
+
+ /* For MSIX: request intr for each vector */
+ if (dev->intr.size > 1) {
+ ret = request_irq(dev->intr.msix_entry[1].vector,
+ pvrdma_intr1_handler, 0, DRV_NAME, dev);
+ if (ret) {
+ dev_err(&dev->pdev->dev,
+ "failed to request interrupt 1\n");
+ goto free_irq;
+ }
+ dev->intr.enabled[1] = 1;
+
+ for (i = 2; i < dev->intr.size; i++) {
+ ret = request_irq(dev->intr.msix_entry[i].vector,
+ pvrdma_intrx_handler, 0,
+ DRV_NAME, dev);
+ if (ret) {
+ dev_err(&dev->pdev->dev,
+ "failed to request interrupt %d\n", i);
+ goto free_irq;
+ }
+ dev->intr.enabled[i] = 1;
+ }
+ }
+
+ return 0;
+
+free_irq:
+ pvrdma_free_irq(dev);
+disable_msi:
+ pvrdma_disable_msi_all(dev);
+ return ret;
+}
+
+static void pvrdma_free_slots(struct pvrdma_dev *dev)
+{
+ struct pci_dev *pdev = dev->pdev;
+
+ if (dev->resp_slot)
+ dma_free_coherent(&pdev->dev, PAGE_SIZE, dev->resp_slot,
+ dev->dsr->resp_slot_dma);
+ if (dev->cmd_slot)
+ dma_free_coherent(&pdev->dev, PAGE_SIZE, dev->cmd_slot,
+ dev->dsr->cmd_slot_dma);
+}
+
+static int pvrdma_add_gid_at_index(struct pvrdma_dev *dev,
+ const union ib_gid *gid,
+ int index)
+{
+ int ret;
+ union pvrdma_cmd_req req;
+ struct pvrdma_cmd_create_bind *cmd_bind = &req.create_bind;
+
+ if (!dev->sgid_tbl) {
+ dev_warn(&dev->pdev->dev, "sgid table not initialized\n");
+ return -EINVAL;
+ }
+
+ memset(cmd_bind, 0, sizeof(*cmd_bind));
+ cmd_bind->hdr.cmd = PVRDMA_CMD_CREATE_BIND;
+ memcpy(cmd_bind->new_gid, gid->raw, 16);
+ cmd_bind->mtu = ib_mtu_enum_to_int(IB_MTU_1024);
+ cmd_bind->vlan = 0xfff;
+ cmd_bind->index = index;
+ cmd_bind->gid_type = PVRDMA_GID_TYPE_FLAG_ROCE_V1;
+
+ ret = pvrdma_cmd_post(dev, &req, NULL, 0);
+ if (ret < 0) {
+ dev_warn(&dev->pdev->dev,
+ "could not create binding, error: %d\n", ret);
+ return -EINVAL;
+ }
+ memcpy(&dev->sgid_tbl[index], gid, sizeof(*gid));
+ return 0;
+}
+
+static int pvrdma_add_gid(struct ib_device *ibdev,
+ u8 port_num,
+ unsigned int index,
+ const union ib_gid *gid,
+ const struct ib_gid_attr *attr,
+ void **context)
+{
+ struct pvrdma_dev *dev = to_vdev(ibdev);
+
+ return pvrdma_add_gid_at_index(dev, gid, index);
+}
+
+static int pvrdma_del_gid_at_index(struct pvrdma_dev *dev, int index)
+{
+ int ret;
+ union pvrdma_cmd_req req;
+ struct pvrdma_cmd_destroy_bind *cmd_dest = &req.destroy_bind;
+
+ /* Update sgid table. */
+ if (!dev->sgid_tbl) {
+ dev_warn(&dev->pdev->dev, "sgid table not initialized\n");
+ return -EINVAL;
+ }
+
+ memset(cmd_dest, 0, sizeof(*cmd_dest));
+ cmd_dest->hdr.cmd = PVRDMA_CMD_DESTROY_BIND;
+ memcpy(cmd_dest->dest_gid, &dev->sgid_tbl[index], 16);
+ cmd_dest->index = index;
+
+ ret = pvrdma_cmd_post(dev, &req, NULL, 0);
+ if (ret < 0) {
+ dev_warn(&dev->pdev->dev,
+ "could not destroy binding, error: %d\n", ret);
+ return ret;
+ }
+ memset(&dev->sgid_tbl[index], 0, 16);
+ return 0;
+}
+
+static int pvrdma_del_gid(struct ib_device *ibdev,
+ u8 port_num,
+ unsigned int index,
+ void **context)
+{
+ struct pvrdma_dev *dev = to_vdev(ibdev);
+
+ dev_dbg(&dev->pdev->dev, "removing gid at index %u from %s",
+ index, dev->netdev->name);
+
+ return pvrdma_del_gid_at_index(dev, index);
+}
+
+static void pvrdma_netdevice_event_handle(struct pvrdma_dev *dev,
+ unsigned long event)
+{
+ switch (event) {
+ case NETDEV_REBOOT:
+ case NETDEV_DOWN:
+ pvrdma_dispatch_event(dev, 1, IB_EVENT_PORT_ERR);
+ break;
+ case NETDEV_UP:
+ pvrdma_dispatch_event(dev, 1, IB_EVENT_PORT_ACTIVE);
+ break;
+ default:
+ dev_dbg(&dev->pdev->dev, "ignore netdevice event %ld on %s\n",
+ event, dev->ib_dev.name);
+ break;
+ }
+}
+
+static void pvrdma_netdevice_event_work(struct work_struct *work)
+{
+ struct pvrdma_netdevice_work *netdev_work;
+ struct pvrdma_dev *dev;
+
+ netdev_work = container_of(work, struct pvrdma_netdevice_work, work);
+
+ mutex_lock(&pvrdma_device_list_lock);
+ list_for_each_entry(dev, &pvrdma_device_list, device_link) {
+ if (dev->netdev == netdev_work->event_netdev) {
+ pvrdma_netdevice_event_handle(dev, netdev_work->event);
+ break;
+ }
+ }
+ mutex_unlock(&pvrdma_device_list_lock);
+
+ kfree(netdev_work);
+}
+
+static int pvrdma_netdevice_event(struct notifier_block *this,
+ unsigned long event, void *ptr)
+{
+ struct net_device *event_netdev = netdev_notifier_info_to_dev(ptr);
+ struct pvrdma_netdevice_work *netdev_work;
+
+ netdev_work = kmalloc(sizeof(*netdev_work), GFP_ATOMIC);
+ if (!netdev_work)
+ return NOTIFY_BAD;
+
+ INIT_WORK(&netdev_work->work, pvrdma_netdevice_event_work);
+ netdev_work->event_netdev = event_netdev;
+ netdev_work->event = event;
+ queue_work(event_wq, &netdev_work->work);
+
+ return NOTIFY_DONE;
+}
+
+static int pvrdma_pci_probe(struct pci_dev *pdev,
+ const struct pci_device_id *id)
+{
+ struct pci_dev *pdev_net;
+ struct pvrdma_dev *dev;
+ int ret;
+ unsigned long start;
+ unsigned long len;
+ unsigned int version;
+ dma_addr_t slot_dma = 0;
+
+ dev_dbg(&pdev->dev, "initializing driver %s\n", pci_name(pdev));
+
+ /* Allocate zero-out device */
+ dev = (struct pvrdma_dev *)ib_alloc_device(sizeof(*dev));
+ if (!dev) {
+ dev_err(&pdev->dev, "failed to allocate IB device\n");
+ return -ENOMEM;
+ }
+
+ mutex_lock(&pvrdma_device_list_lock);
+ list_add(&dev->device_link, &pvrdma_device_list);
+ mutex_unlock(&pvrdma_device_list_lock);
+
+ ret = pvrdma_init_device(dev);
+ if (ret)
+ goto err_free_device;
+
+ dev->pdev = pdev;
+ pci_set_drvdata(pdev, dev);
+
+ ret = pci_enable_device(pdev);
+ if (ret) {
+ dev_err(&pdev->dev, "cannot enable PCI device\n");
+ goto err_free_device;
+ }
+
+ /*
+ * DEBUG: Checking PCI: 0x20200; _MEM; len=0x2000
+ */
+ dev_dbg(&pdev->dev, "PCI resource flags BAR0 %#lx\n",
+ pci_resource_flags(pdev, 0));
+ dev_dbg(&pdev->dev, "PCI resource len %#llx\n",
+ (unsigned long long)pci_resource_len(pdev, 0));
+ dev_dbg(&pdev->dev, "PCI resource start %#llx\n",
+ (unsigned long long)pci_resource_start(pdev, 0));
+ dev_dbg(&pdev->dev, "PCI resource flags BAR1 %#lx\n",
+ pci_resource_flags(pdev, 1));
+ dev_dbg(&pdev->dev, "PCI resource len %#llx\n",
+ (unsigned long long)pci_resource_len(pdev, 1));
+ dev_dbg(&pdev->dev, "PCI resource start %#llx\n",
+ (unsigned long long)pci_resource_start(pdev, 1));
+
+ if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
+ !(pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) {
+ dev_err(&pdev->dev, "PCI BAR region not MMIO\n");
+ ret = -ENOMEM;
+ goto err_free_device;
+ }
+
+ ret = pci_request_regions(pdev, DRV_NAME);
+ if (ret) {
+ dev_err(&pdev->dev, "cannot request PCI resources\n");
+ goto err_disable_pdev;
+ }
+
+ /* Enable 64-Bit DMA */
+ if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) == 0) {
+ ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
+ if (ret != 0) {
+ dev_err(&pdev->dev,
+ "pci_set_consistent_dma_mask failed\n");
+ goto err_free_resource;
+ }
+ } else {
+ ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+ if (ret != 0) {
+ dev_err(&pdev->dev,
+ "pci_set_dma_mask failed\n");
+ goto err_free_resource;
+ }
+ }
+
+ pci_set_master(pdev);
+
+ /* Map register space */
+ start = pci_resource_start(dev->pdev, PVRDMA_PCI_RESOURCE_REG);
+ len = pci_resource_len(dev->pdev, PVRDMA_PCI_RESOURCE_REG);
+ dev->regs = ioremap(start, len);
+ if (!dev->regs) {
+ dev_err(&pdev->dev, "register mapping failed\n");
+ ret = -ENOMEM;
+ goto err_free_resource;
+ }
+
+ /* Setup per-device UAR. */
+ dev->driver_uar.index = 0;
+ dev->driver_uar.pfn =
+ pci_resource_start(dev->pdev, PVRDMA_PCI_RESOURCE_UAR) >>
+ PAGE_SHIFT;
+ dev->driver_uar.map =
+ ioremap(dev->driver_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
+ if (!dev->driver_uar.map) {
+ dev_err(&pdev->dev, "failed to remap UAR pages\n");
+ ret = -ENOMEM;
+ goto err_unmap_regs;
+ }
+
+ version = pvrdma_read_reg(dev, PVRDMA_REG_VERSION);
+ dev_info(&pdev->dev, "device version %d, driver version %d\n",
+ version, PVRDMA_VERSION);
+ if (version < PVRDMA_VERSION) {
+ dev_err(&pdev->dev, "incompatible device version\n");
+ goto err_uar_unmap;
+ }
+
+ dev->dsr = dma_alloc_coherent(&pdev->dev, sizeof(*dev->dsr),
+ &dev->dsrbase, GFP_KERNEL);
+ if (!dev->dsr) {
+ dev_err(&pdev->dev, "failed to allocate shared region\n");
+ ret = -ENOMEM;
+ goto err_uar_unmap;
+ }
+
+ /* Setup the shared region */
+ memset(dev->dsr, 0, sizeof(*dev->dsr));
+ dev->dsr->driver_version = PVRDMA_VERSION;
+ dev->dsr->gos_info.gos_bits = sizeof(void *) == 4 ?
+ PVRDMA_GOS_BITS_32 :
+ PVRDMA_GOS_BITS_64;
+ dev->dsr->gos_info.gos_type = PVRDMA_GOS_TYPE_LINUX;
+ dev->dsr->gos_info.gos_ver = 1;
+ dev->dsr->uar_pfn = dev->driver_uar.pfn;
+
+ /* Command slot. */
+ dev->cmd_slot = dma_alloc_coherent(&pdev->dev, PAGE_SIZE,
+ &slot_dma, GFP_KERNEL);
+ if (!dev->cmd_slot) {
+ ret = -ENOMEM;
+ goto err_free_dsr;
+ }
+
+ dev->dsr->cmd_slot_dma = (u64)slot_dma;
+
+ /* Response slot. */
+ dev->resp_slot = dma_alloc_coherent(&pdev->dev, PAGE_SIZE,
+ &slot_dma, GFP_KERNEL);
+ if (!dev->resp_slot) {
+ ret = -ENOMEM;
+ goto err_free_slots;
+ }
+
+ dev->dsr->resp_slot_dma = (u64)slot_dma;
+
+ /* Async event ring */
+ dev->dsr->async_ring_pages.num_pages = 4;
+ ret = pvrdma_page_dir_init(dev, &dev->async_pdir,
+ dev->dsr->async_ring_pages.num_pages, true);
+ if (ret)
+ goto err_free_slots;
+ dev->async_ring_state = dev->async_pdir.pages[0];
+ dev->dsr->async_ring_pages.pdir_dma = dev->async_pdir.dir_dma;
+
+ /* CQ notification ring */
+ dev->dsr->cq_ring_pages.num_pages = 4;
+ ret = pvrdma_page_dir_init(dev, &dev->cq_pdir,
+ dev->dsr->cq_ring_pages.num_pages, true);
+ if (ret)
+ goto err_free_async_ring;
+ dev->cq_ring_state = dev->cq_pdir.pages[0];
+ dev->dsr->cq_ring_pages.pdir_dma = dev->cq_pdir.dir_dma;
+
+ /*
+ * Write the PA of the shared region to the device. The writes must be
+ * ordered such that the high bits are written last. When the writes
+ * complete, the device will have filled out the capabilities.
+ */
+
+ pvrdma_write_reg(dev, PVRDMA_REG_DSRLOW, (u32)dev->dsrbase);
+ pvrdma_write_reg(dev, PVRDMA_REG_DSRHIGH,
+ (u32)((u64)(dev->dsrbase) >> 32));
+
+ /* Make sure the write is complete before reading status. */
+ mb();
+
+ /* Currently, the driver only supports RoCE mode. */
+ if (dev->dsr->caps.mode != PVRDMA_DEVICE_MODE_ROCE) {
+ dev_err(&pdev->dev, "unsupported transport %d\n",
+ dev->dsr->caps.mode);
+ ret = -EINVAL;
+ goto err_free_cq_ring;
+ }
+
+ /* Currently, the driver only supports RoCE V1. */
+ if (!(dev->dsr->caps.gid_types & PVRDMA_GID_TYPE_FLAG_ROCE_V1)) {
+ dev_err(&pdev->dev, "driver needs RoCE v1 support\n");
+ ret = -EINVAL;
+ goto err_free_cq_ring;
+ }
+
+ /* Paired vmxnet3 will have same bus, slot. But func will be 0 */
+ pdev_net = pci_get_slot(pdev->bus, PCI_DEVFN(PCI_SLOT(pdev->devfn), 0));
+ if (!pdev_net) {
+ dev_err(&pdev->dev, "failed to find paired net device\n");
+ ret = -ENODEV;
+ goto err_free_cq_ring;
+ }
+
+ if (pdev_net->vendor != PCI_VENDOR_ID_VMWARE ||
+ pdev_net->device != PCI_DEVICE_ID_VMWARE_VMXNET3) {
+ dev_err(&pdev->dev, "failed to find paired vmxnet3 device\n");
+ pci_dev_put(pdev_net);
+ ret = -ENODEV;
+ goto err_free_cq_ring;
+ }
+
+ dev->netdev = pci_get_drvdata(pdev_net);
+ pci_dev_put(pdev_net);
+ if (!dev->netdev) {
+ dev_err(&pdev->dev, "failed to get vmxnet3 device\n");
+ ret = -ENODEV;
+ goto err_free_cq_ring;
+ }
+
+ dev_info(&pdev->dev, "paired device to %s\n", dev->netdev->name);
+
+ /* Interrupt setup */
+ ret = pvrdma_alloc_intrs(dev);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to allocate interrupts\n");
+ ret = -ENOMEM;
+ goto err_netdevice;
+ }
+
+ /* Allocate UAR table. */
+ ret = pvrdma_uar_table_init(dev);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to allocate UAR table\n");
+ ret = -ENOMEM;
+ goto err_free_intrs;
+ }
+
+ /* Allocate GID table */
+ dev->sgid_tbl = kcalloc(dev->dsr->caps.gid_tbl_len,
+ sizeof(union ib_gid), GFP_KERNEL);
+ if (!dev->sgid_tbl) {
+ ret = -ENOMEM;
+ goto err_free_uar_table;
+ }
+ dev_dbg(&pdev->dev, "gid table len %d\n", dev->dsr->caps.gid_tbl_len);
+
+ pvrdma_enable_intrs(dev);
+
+ /* Activate pvrdma device */
+ pvrdma_write_reg(dev, PVRDMA_REG_CTL, PVRDMA_DEVICE_CTL_ACTIVATE);
+
+ /* Make sure the write is complete before reading status. */
+ mb();
+
+ /* Check if device was successfully activated */
+ ret = pvrdma_read_reg(dev, PVRDMA_REG_ERR);
+ if (ret != 0) {
+ dev_err(&pdev->dev, "failed to activate device\n");
+ ret = -EINVAL;
+ goto err_disable_intr;
+ }
+
+ /* Register IB device */
+ ret = pvrdma_register_device(dev);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to register IB device\n");
+ goto err_disable_intr;
+ }
+
+ dev->nb_netdev.notifier_call = pvrdma_netdevice_event;
+ ret = register_netdevice_notifier(&dev->nb_netdev);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to register netdevice events\n");
+ goto err_unreg_ibdev;
+ }
+
+ dev_info(&pdev->dev, "attached to device\n");
+ return 0;
+
+err_unreg_ibdev:
+ ib_unregister_device(&dev->ib_dev);
+err_disable_intr:
+ pvrdma_disable_intrs(dev);
+ kfree(dev->sgid_tbl);
+err_free_uar_table:
+ pvrdma_uar_table_cleanup(dev);
+err_free_intrs:
+ pvrdma_free_irq(dev);
+ pvrdma_disable_msi_all(dev);
+err_netdevice:
+ unregister_netdevice_notifier(&dev->nb_netdev);
+err_free_cq_ring:
+ pvrdma_page_dir_cleanup(dev, &dev->cq_pdir);
+err_free_async_ring:
+ pvrdma_page_dir_cleanup(dev, &dev->async_pdir);
+err_free_slots:
+ pvrdma_free_slots(dev);
+err_free_dsr:
+ dma_free_coherent(&pdev->dev, sizeof(*dev->dsr), dev->dsr,
+ dev->dsrbase);
+err_uar_unmap:
+ iounmap(dev->driver_uar.map);
+err_unmap_regs:
+ iounmap(dev->regs);
+err_free_resource:
+ pci_release_regions(pdev);
+err_disable_pdev:
+ pci_disable_device(pdev);
+ pci_set_drvdata(pdev, NULL);
+err_free_device:
+ mutex_lock(&pvrdma_device_list_lock);
+ list_del(&dev->device_link);
+ mutex_unlock(&pvrdma_device_list_lock);
+ ib_dealloc_device(&dev->ib_dev);
+ return ret;
+}
+
+static void pvrdma_pci_remove(struct pci_dev *pdev)
+{
+ struct pvrdma_dev *dev = pci_get_drvdata(pdev);
+
+ if (!dev)
+ return;
+
+ dev_info(&pdev->dev, "detaching from device\n");
+
+ unregister_netdevice_notifier(&dev->nb_netdev);
+ dev->nb_netdev.notifier_call = NULL;
+
+ flush_workqueue(event_wq);
+
+ /* Unregister ib device */
+ ib_unregister_device(&dev->ib_dev);
+
+ mutex_lock(&pvrdma_device_list_lock);
+ list_del(&dev->device_link);
+ mutex_unlock(&pvrdma_device_list_lock);
+
+ pvrdma_disable_intrs(dev);
+ pvrdma_free_irq(dev);
+ pvrdma_disable_msi_all(dev);
+
+ /* Deactivate pvrdma device */
+ pvrdma_write_reg(dev, PVRDMA_REG_CTL, PVRDMA_DEVICE_CTL_RESET);
+ pvrdma_page_dir_cleanup(dev, &dev->cq_pdir);
+ pvrdma_page_dir_cleanup(dev, &dev->async_pdir);
+ pvrdma_free_slots(dev);
+
+ iounmap(dev->regs);
+ kfree(dev->sgid_tbl);
+ kfree(dev->cq_tbl);
+ kfree(dev->qp_tbl);
+ pvrdma_uar_table_cleanup(dev);
+ iounmap(dev->driver_uar.map);
+
+ ib_dealloc_device(&dev->ib_dev);
+
+ /* Free pci resources */
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+ pci_set_drvdata(pdev, NULL);
+}
+
+static struct pci_device_id pvrdma_pci_table[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_VMWARE, PCI_DEVICE_ID_VMWARE_PVRDMA), },
+ { 0 },
+};
+
+MODULE_DEVICE_TABLE(pci, pvrdma_pci_table);
+
+static struct pci_driver pvrdma_driver = {
+ .name = DRV_NAME,
+ .id_table = pvrdma_pci_table,
+ .probe = pvrdma_pci_probe,
+ .remove = pvrdma_pci_remove,
+};
+
+static int __init pvrdma_init(void)
+{
+ int err;
+
+ event_wq = alloc_ordered_workqueue("pvrdma_event_wq", WQ_MEM_RECLAIM);
+ if (!event_wq)
+ return -ENOMEM;
+
+ err = pci_register_driver(&pvrdma_driver);
+ if (err)
+ destroy_workqueue(event_wq);
+
+ return err;
+}
+
+static void __exit pvrdma_cleanup(void)
+{
+ pci_unregister_driver(&pvrdma_driver);
+
+ destroy_workqueue(event_wq);
+}
+
+module_init(pvrdma_init);
+module_exit(pvrdma_cleanup);
+
+MODULE_AUTHOR("VMware, Inc");
+MODULE_DESCRIPTION("VMware Virtual RDMA/InfiniBand driver");
+MODULE_VERSION(DRV_VERSION);
+MODULE_LICENSE("Dual BSD/GPL");
--
2.7.4
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