From: longli@linuxonhyperv.com
To: "K. Y. Srinivasan" <kys@microsoft.com>,
Haiyang Zhang <haiyangz@microsoft.com>,
Stephen Hemminger <sthemmin@microsoft.com>,
Wei Liu <wei.liu@kernel.org>, Dexuan Cui <decui@microsoft.com>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Jason Gunthorpe <jgg@ziepe.ca>, Leon Romanovsky <leon@kernel.org>,
edumazet@google.com, shiraz.saleem@intel.com,
Ajay Sharma <sharmaajay@microsoft.com>
Cc: linux-hyperv@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org,
Long Li <longli@microsoft.com>
Subject: [Patch v8 02/12] net: mana: Record the physical address for doorbell page region
Date: Wed, 19 Oct 2022 15:24:02 -0700 [thread overview]
Message-ID: <1666218252-32191-3-git-send-email-longli@linuxonhyperv.com> (raw)
In-Reply-To: <1666218252-32191-1-git-send-email-longli@linuxonhyperv.com>
From: Long Li <longli@microsoft.com>
For supporting RDMA device with multiple user contexts with their
individual doorbell pages, record the start address of doorbell page
region for use by the RDMA driver to allocate user context doorbell IDs.
Reviewed-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Long Li <longli@microsoft.com>
Acked-by: Haiyang Zhang <haiyangz@microsoft.com>
---
Change log:
v6: rebased to rdma-next
drivers/net/ethernet/microsoft/mana/gdma.h | 2 ++
drivers/net/ethernet/microsoft/mana/gdma_main.c | 4 ++++
2 files changed, 6 insertions(+)
diff --git a/drivers/net/ethernet/microsoft/mana/gdma.h b/drivers/net/ethernet/microsoft/mana/gdma.h
index f321a2616d03..72eaec2470c0 100644
--- a/drivers/net/ethernet/microsoft/mana/gdma.h
+++ b/drivers/net/ethernet/microsoft/mana/gdma.h
@@ -351,9 +351,11 @@ struct gdma_context {
u32 test_event_eq_id;
bool is_pf;
+ phys_addr_t bar0_pa;
void __iomem *bar0_va;
void __iomem *shm_base;
void __iomem *db_page_base;
+ phys_addr_t phys_db_page_base;
u32 db_page_size;
/* Shared memory chanenl (used to bootstrap HWC) */
diff --git a/drivers/net/ethernet/microsoft/mana/gdma_main.c b/drivers/net/ethernet/microsoft/mana/gdma_main.c
index 5f9240182351..0cfe5f15458e 100644
--- a/drivers/net/ethernet/microsoft/mana/gdma_main.c
+++ b/drivers/net/ethernet/microsoft/mana/gdma_main.c
@@ -44,6 +44,9 @@ static void mana_gd_init_vf_regs(struct pci_dev *pdev)
gc->db_page_base = gc->bar0_va +
mana_gd_r64(gc, GDMA_REG_DB_PAGE_OFFSET);
+ gc->phys_db_page_base = gc->bar0_pa +
+ mana_gd_r64(gc, GDMA_REG_DB_PAGE_OFFSET);
+
gc->shm_base = gc->bar0_va + mana_gd_r64(gc, GDMA_REG_SHM_OFFSET);
}
@@ -1367,6 +1370,7 @@ static int mana_gd_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
mutex_init(&gc->eq_test_event_mutex);
pci_set_drvdata(pdev, gc);
+ gc->bar0_pa = pci_resource_start(pdev, 0);
bar0_va = pci_iomap(pdev, bar, 0);
if (!bar0_va)
--
2.17.1
next prev parent reply other threads:[~2022-10-19 22:24 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-19 22:24 [Patch v8 00/12] Introduce Microsoft Azure Network Adapter (MANA) RDMA driver longli
2022-10-19 22:24 ` [Patch v8 01/12] net: mana: Add support for auxiliary device longli
2022-10-19 22:24 ` longli [this message]
2022-10-19 22:24 ` [Patch v8 03/12] net: mana: Handle vport sharing between devices longli
2022-10-19 22:24 ` [Patch v8 04/12] net: mana: Set the DMA device max segment size longli
2022-10-19 22:24 ` [Patch v8 05/12] net: mana: Export Work Queue functions for use by RDMA driver longli
2022-10-19 22:24 ` [Patch v8 06/12] net: mana: Record port number in netdev longli
2022-10-19 22:24 ` [Patch v8 07/12] net: mana: Move header files to a common location longli
2022-10-19 22:24 ` [Patch v8 08/12] net: mana: Define max values for SGL entries longli
2022-10-19 22:24 ` [Patch v8 09/12] net: mana: Define and process GDMA response code GDMA_STATUS_MORE_ENTRIES longli
2022-10-19 22:24 ` [Patch v8 10/12] net: mana: Define data structures for allocating doorbell page from GDMA longli
2022-10-19 22:24 ` [Patch v8 11/12] net: mana: Define data structures for protection domain and memory registration longli
2022-10-19 22:24 ` [Patch v8 12/12] RDMA/mana_ib: Add a driver for Microsoft Azure Network Adapter longli
2022-10-20 10:56 ` Bernard Metzler
2022-10-20 20:42 ` Long Li
2022-10-21 14:33 ` Tom Talpey
2022-10-21 14:36 ` Bernard Metzler
2022-10-21 22:55 ` Long Li
2022-10-22 0:34 ` Tom Talpey
2022-10-22 0:38 ` Long Li
2022-10-21 15:54 ` Bernard Metzler
2022-10-21 23:01 ` Long Li
2022-10-21 23:32 ` Long Li
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