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bnxt_en: Read partno and serialno of the board from VPD

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Store the part number and serial number information from VPD in
the bnxt structure. Follow up patch will add the support to display
the information via devlink command.

Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vasundhara Volam 2020-03-27 15:05:49 +05:30 committed by David S. Miller
parent 16efafa31b
commit a0d0fd70fe
2 changed files with 63 additions and 0 deletions
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59
drivers/net/ethernet/broadcom/bnxt/bnxt.c
View File

@ -11752,6 +11752,63 @@ static int bnxt_init_mac_addr(struct bnxt *bp)
return rc;
}
#define BNXT_VPD_LEN 512
static void bnxt_vpd_read_info(struct bnxt *bp)
{
struct pci_dev *pdev = bp->pdev;
int i, len, pos, ro_size;
ssize_t vpd_size;
u8 *vpd_data;
vpd_data = kmalloc(BNXT_VPD_LEN, GFP_KERNEL);
if (!vpd_data)
return;
vpd_size = pci_read_vpd(pdev, 0, BNXT_VPD_LEN, vpd_data);
if (vpd_size <= 0) {
netdev_err(bp->dev, "Unable to read VPD\n");
goto exit;
}
i = pci_vpd_find_tag(vpd_data, 0, vpd_size, PCI_VPD_LRDT_RO_DATA);
if (i < 0) {
netdev_err(bp->dev, "VPD READ-Only not found\n");
goto exit;
}
ro_size = pci_vpd_lrdt_size(&vpd_data[i]);
i += PCI_VPD_LRDT_TAG_SIZE;
if (i + ro_size > vpd_size)
goto exit;
pos = pci_vpd_find_info_keyword(vpd_data, i, ro_size,
PCI_VPD_RO_KEYWORD_PARTNO);
if (pos < 0)
goto read_sn;
len = pci_vpd_info_field_size(&vpd_data[pos]);
pos += PCI_VPD_INFO_FLD_HDR_SIZE;
if (len + pos > vpd_size)
goto read_sn;
strlcpy(bp->board_partno, &vpd_data[pos], min(len, BNXT_VPD_FLD_LEN));
read_sn:
pos = pci_vpd_find_info_keyword(vpd_data, i, ro_size,
PCI_VPD_RO_KEYWORD_SERIALNO);
if (pos < 0)
goto exit;
len = pci_vpd_info_field_size(&vpd_data[pos]);
pos += PCI_VPD_INFO_FLD_HDR_SIZE;
if (len + pos > vpd_size)
goto exit;
strlcpy(bp->board_serialno, &vpd_data[pos], min(len, BNXT_VPD_FLD_LEN));
exit:
kfree(vpd_data);
}
static int bnxt_pcie_dsn_get(struct bnxt *bp, u8 dsn[])
{
struct pci_dev *pdev = bp->pdev;
@ -11809,6 +11866,8 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
dev->ethtool_ops = &bnxt_ethtool_ops;
pci_set_drvdata(pdev, dev);
bnxt_vpd_read_info(bp);
rc = bnxt_alloc_hwrm_resources(bp);
if (rc)
goto init_err_pci_clean;

4
drivers/net/ethernet/broadcom/bnxt/bnxt.h
View File

@ -1500,6 +1500,10 @@ struct bnxt {
(chip_num) == CHIP_NUM_58804 || \
(chip_num) == CHIP_NUM_58808)
#define BNXT_VPD_FLD_LEN 32
char board_partno[BNXT_VPD_FLD_LEN];
char board_serialno[BNXT_VPD_FLD_LEN];
struct net_device *dev;
struct pci_dev *pdev;