From: "Ian Munsie" <imunsie@au1.ibm.com>
To: Michael Ellerman <mpe@ellerman.id.au>,
Michael Neuling <mikey@neuling.org>,
Frederic Barrat <fbarrat@linux.vnet.ibm.com>,
Andrew Donnellan <andrew.donnellan@au1.ibm.com>,
linuxppc-dev@lists.ozlabs.org, Huy Nguyen <huyn@mellanox.com>
Cc: Ian Munsie <imunsie@au1.ibm.com>
Subject: [PATCH 03/14] cxl: Enable bus mastering for devices using CAPP DMA mode
Date: Mon, 4 Jul 2016 23:22:01 +1000 [thread overview]
Message-ID: <1467638532-9250-4-git-send-email-imunsie@au.ibm.com> (raw)
In-Reply-To: <1467638532-9250-1-git-send-email-imunsie@au.ibm.com>
From: Ian Munsie <imunsie@au1.ibm.com>
Devices that use CAPP DMA mode (such as the Mellanox CX4) require bus
master to be enabled in order for the CAPI traffic to flow. This should
be harmless to enable for other cxl devices, so unconditionally enable
it in the adapter init flow.
Signed-off-by: Ian Munsie <imunsie@au1.ibm.com>
---
drivers/misc/cxl/pci.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/misc/cxl/pci.c b/drivers/misc/cxl/pci.c
index 9530280..6c0597d 100644
--- a/drivers/misc/cxl/pci.c
+++ b/drivers/misc/cxl/pci.c
@@ -1264,6 +1264,9 @@ static int cxl_configure_adapter(struct cxl *adapter, struct pci_dev *dev)
if ((rc = adapter->native->sl_ops->adapter_regs_init(adapter, dev)))
goto err;
+ /* Required for devices using CAPP DMA mode, harmless for others */
+ pci_set_master(dev);
+
if ((rc = pnv_phb_to_cxl_mode(dev, adapter->native->sl_ops->capi_mode)))
goto err;
--
2.8.1
next prev parent reply other threads:[~2016-07-04 13:22 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-04 13:21 powerpc / cxl: Add support for the Mellanox CX4 in cxl mode Ian Munsie
2016-07-04 13:21 ` [PATCH 01/14] powerpc/powernv: Split cxl code out into a separate file Ian Munsie
2016-07-06 3:44 ` Andrew Donnellan
2016-07-06 16:27 ` Frederic Barrat
2016-07-04 13:22 ` [PATCH 02/14] cxl: Add cxl_slot_is_supported API Ian Munsie
2016-07-06 2:02 ` Andrew Donnellan
2016-07-06 16:36 ` Frederic Barrat
2016-07-04 13:22 ` Ian Munsie [this message]
2016-07-06 4:04 ` [PATCH 03/14] cxl: Enable bus mastering for devices using CAPP DMA mode Andrew Donnellan
2016-07-06 16:37 ` Frederic Barrat
2016-07-04 13:22 ` [PATCH 04/14] cxl: Move cxl_afu_get / cxl_afu_put to base Ian Munsie
2016-07-05 2:10 ` Andrew Donnellan
2016-07-06 16:45 ` Frederic Barrat
2016-07-04 13:22 ` [PATCH 05/14] cxl: Allow a default context to be associated with an external pci_dev Ian Munsie
2016-07-06 16:51 ` Frederic Barrat
2016-07-04 13:22 ` [PATCH 06/14] powerpc/powernv: Add support for the cxl kernel api on the real phb Ian Munsie
2016-07-06 17:38 ` Frederic Barrat
2016-07-07 6:28 ` Ian Munsie
2016-07-04 13:22 ` [PATCH 07/14] cxl: Add support for using the kernel API with a real PHB Ian Munsie
2016-07-06 17:39 ` Frederic Barrat
2016-07-06 18:30 ` Frederic Barrat
2016-07-07 6:32 ` Ian Munsie
2016-07-04 13:22 ` [PATCH 08/14] cxl: Add kernel APIs to get & set the max irqs per context Ian Munsie
2016-07-06 18:11 ` Frederic Barrat
2016-07-07 6:00 ` Ian Munsie
2016-07-04 13:22 ` [PATCH 09/14] cxl: Add preliminary workaround for CX4 interrupt limitation Ian Munsie
2016-07-06 18:34 ` Frederic Barrat
2016-07-04 13:22 ` [PATCH 10/14] cxl: Add support for interrupts on the Mellanox CX4 Ian Munsie
2016-07-06 18:41 ` Frederic Barrat
2016-07-07 6:03 ` Ian Munsie
2016-07-04 13:22 ` [PATCH 11/14] cxl: Workaround PE=0 hardware limitation in " Ian Munsie
2016-07-06 4:42 ` Andrew Donnellan
2016-07-06 18:42 ` Frederic Barrat
2016-07-04 13:22 ` [PATCH 12/14] PCI/hotplug: pnv_php: export symbols and move struct types needed by cxl Ian Munsie
2016-07-05 0:03 ` Gavin Shan
2016-07-05 1:08 ` Andrew Donnellan
2016-07-04 13:22 ` [PATCH 13/14] PCI/hotplug: pnv_php: handle OPAL_PCI_SLOT_OFFLINE power state Ian Munsie
2016-07-04 13:22 ` [PATCH 14/14] cxl: Add cxl_check_and_switch_mode() API to switch bi-modal cards Ian Munsie
2016-07-06 3:55 ` Andrew Donnellan
2016-07-06 18:51 ` Frederic Barrat
2016-07-07 1:18 ` Andrew Donnellan
2016-07-07 6:26 ` Ian Munsie
2016-07-07 6:44 ` Andrew Donnellan
2016-07-07 8:15 ` Andrew Donnellan
2016-07-11 9:19 ` Ian Munsie
2016-07-12 1:20 ` Andrew Donnellan
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1467638532-9250-4-git-send-email-imunsie@au.ibm.com \
--to=imunsie@au1.ibm.com \
--cc=andrew.donnellan@au1.ibm.com \
--cc=fbarrat@linux.vnet.ibm.com \
--cc=huyn@mellanox.com \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=mikey@neuling.org \
--cc=mpe@ellerman.id.au \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).