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net/bnxt: cache address of doorbell to subsequent access

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While creating TX, Rx, CQ rings use cached DB address instead of
getting it from the PCI memory resource.

Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
This commit is contained in:
Ajit Khaparde 2018-04-20 07:22:00 -07:00 committed by Ferruh Yigit
parent 3a14b29bff
commit e3d8f1e6a6
4 changed files with 19 additions and 13 deletions
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1
drivers/net/bnxt/bnxt.h
View File

@ -208,6 +208,7 @@ struct bnxt {
struct rte_eth_dev *eth_dev;
struct rte_eth_rss_conf rss_conf;
struct rte_pci_device *pdev;
void *doorbell_base;
uint32_t flags;
#define BNXT_FLAG_REGISTERED (1 << 0)

2
drivers/net/bnxt/bnxt_cpr.c
View File

@ -144,7 +144,7 @@ int bnxt_alloc_def_cp_ring(struct bnxt *bp)
HWRM_NA_SIGNATURE);
if (rc)
goto err_out;
cpr->cp_doorbell = bp->pdev->mem_resource[2].addr;
cpr->cp_doorbell = (char *)bp->doorbell_base;
B_CP_DIS_DB(cpr, cpr->cp_raw_cons);
if (BNXT_PF(bp))
rc = bnxt_hwrm_func_cfg_def_cp(bp);

12
drivers/net/bnxt/bnxt_ethdev.c
View File

@ -3095,11 +3095,23 @@ static int bnxt_init_board(struct rte_eth_dev *eth_dev)
rc = -ENOMEM;
goto init_err_release;
}
if (!pci_dev->mem_resource[2].addr) {
PMD_DRV_LOG(ERR,
"Cannot find PCI device BAR 2 address, aborting\n");
rc = -ENODEV;
goto init_err_release;
} else {
bp->doorbell_base = (void *)pci_dev->mem_resource[2].addr;
}
return 0;
init_err_release:
if (bp->bar0)
bp->bar0 = NULL;
if (bp->doorbell_base)
bp->doorbell_base = NULL;
init_err_disable:

17
drivers/net/bnxt/bnxt_ring.c
View File

@ -261,7 +261,6 @@ int bnxt_alloc_rings(struct bnxt *bp, uint16_t qidx,
*/
int bnxt_alloc_hwrm_rings(struct bnxt *bp)
{
struct rte_pci_device *pci_dev = bp->pdev;
unsigned int i;
int rc = 0;
@ -283,8 +282,7 @@ int bnxt_alloc_hwrm_rings(struct bnxt *bp)
HWRM_NA_SIGNATURE);
if (rc)
goto err_out;
cpr->cp_doorbell = (char *)pci_dev->mem_resource[2].addr +
idx * 0x80;
cpr->cp_doorbell = (char *)bp->doorbell_base + idx * 0x80;
bp->grp_info[i].cp_fw_ring_id = cp_ring->fw_ring_id;
B_CP_DIS_DB(cpr, cpr->cp_raw_cons);
@ -296,8 +294,7 @@ int bnxt_alloc_hwrm_rings(struct bnxt *bp)
if (rc)
goto err_out;
rxr->rx_prod = 0;
rxr->rx_doorbell = (char *)pci_dev->mem_resource[2].addr +
idx * 0x80;
rxr->rx_doorbell = (char *)bp->doorbell_base + idx * 0x80;
bp->grp_info[i].rx_fw_ring_id = ring->fw_ring_id;
B_RX_DB(rxr->rx_doorbell, rxr->rx_prod);
@ -316,9 +313,7 @@ int bnxt_alloc_hwrm_rings(struct bnxt *bp)
goto err_out;
PMD_DRV_LOG(DEBUG, "Alloc AGG Done!\n");
rxr->ag_prod = 0;
rxr->ag_doorbell =
(char *)pci_dev->mem_resource[2].addr +
map_idx * 0x80;
rxr->ag_doorbell = (char *)bp->doorbell_base + map_idx * 0x80;
bp->grp_info[i].ag_fw_ring_id = ring->fw_ring_id;
B_RX_DB(rxr->ag_doorbell, rxr->ag_prod);
@ -350,8 +345,7 @@ int bnxt_alloc_hwrm_rings(struct bnxt *bp)
if (rc)
goto err_out;
cpr->cp_doorbell = (char *)pci_dev->mem_resource[2].addr +
idx * 0x80;
cpr->cp_doorbell = (char *)bp->doorbell_base + idx * 0x80;
B_CP_DIS_DB(cpr, cpr->cp_raw_cons);
/* Tx ring */
@ -362,8 +356,7 @@ int bnxt_alloc_hwrm_rings(struct bnxt *bp)
if (rc)
goto err_out;
txr->tx_doorbell = (char *)pci_dev->mem_resource[2].addr +
idx * 0x80;
txr->tx_doorbell = (char *)bp->doorbell_base + idx * 0x80;
txq->index = idx;
}