net: mana: Record doorbell physical address in PF mode

From: Long Li <[email protected]>

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")

---
Changes
v2: add more details in commit message on how the doorbell physical address is used
v3: add the early commit detail where the support for PF mode is implemented

 drivers/net/ethernet/microsoft/mana/gdma_main.c | 3 +++
 1 file changed, 3 insertions(+)

index 3504507477c6..52cf7112762c 100644
@@ -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;

2.25.1

Thanks for the updates.

I agree that this revision address Jakub's feedback on v2. Which in turn addressed his feedback on v1.