| Message ID | 1661906071-29508-3-git-send-email-longli@linuxonhyperv.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Introduce Microsoft Azure Network Adapter (MANA) RDMA driver | expand |
> -----Original Message----- > From: longli@linuxonhyperv.com <longli@linuxonhyperv.com> > Sent: Tuesday, August 30, 2022 8:34 PM > To: KY 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 v5 02/12] net: mana: Record the physical address for doorbell > page region > > 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>
diff --git a/drivers/net/ethernet/microsoft/mana/gdma.h b/drivers/net/ethernet/microsoft/mana/gdma.h index d815d323be87..c724ca410fcb 100644 --- a/drivers/net/ethernet/microsoft/mana/gdma.h +++ b/drivers/net/ethernet/microsoft/mana/gdma.h @@ -350,9 +350,11 @@ struct gdma_context { struct completion eq_test_event; u32 test_event_eq_id; + 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 49b85ca578b0..9fafaa0c8e76 100644 --- a/drivers/net/ethernet/microsoft/mana/gdma_main.c +++ b/drivers/net/ethernet/microsoft/mana/gdma_main.c @@ -27,6 +27,9 @@ static void mana_gd_init_registers(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); } @@ -1335,6 +1338,7 @@ 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)