net: mana: Record doorbell physical address in PF mode

MANA supports RDMA in PF mode. The driver should record the doorbell
physical address when in PF mode.

The doorbell physical address is used by the RDMA driver to map
doorbell pages of the device to user-mode applications through RDMA
verbs interface. In the past, they have been mapped to user-mode while
the device is in VF mode. With the support for PF mode implemented,
also expose those pages in PF mode.

Support for PF mode is implemented in
290e5d3c49f6 ("net: mana: Add support for Multi Vports on Bare metal")

Signed-off-by: Long Li <longli@microsoft.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/1750210606-12167-1-git-send-email-longli@linuxonhyperv.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/microsoft/mana/gdma_main.c b/drivers/net/ethernet/microsoft/mana/gdma_main.c
index 3504507477c60f2a53294ae9c5a8c141ee805a84..52cf7112762c65d686484576906a02447357ca8c 100644 (file)
--- a/drivers/net/ethernet/microsoft/mana/gdma_main.c
+++ b/drivers/net/ethernet/microsoft/mana/gdma_main.c
@@ -31,6 +31,9 @@ static void mana_gd_init_pf_regs(struct pci_dev *pdev)
        gc->db_page_base = gc->bar0_va +
                                mana_gd_r64(gc, GDMA_PF_REG_DB_PAGE_OFF);
 
+       gc->phys_db_page_base = gc->bar0_pa +
+                               mana_gd_r64(gc, GDMA_PF_REG_DB_PAGE_OFF);
+
        sriov_base_off = mana_gd_r64(gc, GDMA_SRIOV_REG_CFG_BASE_OFF);
 
        sriov_base_va = gc->bar0_va + sriov_base_off;