[net-next v3 1/3] bnge: Pass BAR1 doorbell mapping to RoCE auxiliary device

From: Siva Reddy Kallam

Date: Thu Nov 05 2026 - 04:16:20 EST


From: Saswati Das <saswati.das@xxxxxxxxxxxx>

Pass the L2 driver's BAR1 doorbell mapping to struct bnge_auxr_dev
alongside the existing BAR0 mapping.

This exposes the doorbell aperture base to the RoCE auxiliary device
so that the RDMA driver can access doorbell registers when configuring
firmware communication channels.

Signed-off-by: Saswati Das <saswati.das@xxxxxxxxxxxx>
Signed-off-by: Siva Reddy Kallam <siva.kallam@xxxxxxxxxxxx>
Reviewed-by: Dharmender Garg <dharmender.garg@xxxxxxxxxxxx>
---
drivers/net/ethernet/broadcom/bnge/bnge_auxr.c | 1 +
drivers/net/ethernet/broadcom/bnge/bnge_auxr.h | 1 +
2 files changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_auxr.c b/drivers/net/ethernet/broadcom/bnge/bnge_auxr.c
index 0955b488b6fe..87ae40eab592 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_auxr.c
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_auxr.c
@@ -181,6 +181,7 @@ static void bnge_set_auxr_dev_info(struct bnge_auxr_dev *auxr_dev,
auxr_dev->pf_port_id = bd->pf.port_id;
auxr_dev->en_state = bd->state;
auxr_dev->bar0 = bd->bar0;
+ auxr_dev->bar1 = bd->bar1;
}

void bnge_rdma_aux_device_add(struct bnge_dev *bd)
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_auxr.h b/drivers/net/ethernet/broadcom/bnge/bnge_auxr.h
index 6c5c15ef2b0a..13cb9289f5b8 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_auxr.h
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_auxr.h
@@ -46,6 +46,7 @@ struct bnge_auxr_dev {
struct net_device *net;
struct pci_dev *pdev;
void __iomem *bar0;
+ void __iomem *bar1;

struct bnge_msix_info msix_info[BNGE_MAX_ROCE_MSIX];

--
2.43.5