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net: mana: Record the physical address for doorbell page region

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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>
Link: https://lore.kernel.org/r/1667502990-2559-3-git-send-email-longli@linuxonhyperv.com
Acked-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
This commit is contained in:
Long Li 2022-11-03 12:16:20 -07:00 committed by Leon Romanovsky
parent a69839d432
commit f3dc096246
2 changed files with 6 additions and 0 deletions
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2
drivers/net/ethernet/microsoft/mana/gdma.h
View File

@ -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) */

4
drivers/net/ethernet/microsoft/mana/gdma_main.c
View File

@ -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);
}
@ -1377,6 +1380,7 @@ 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)