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sfc: Store VPD serial number at probe time 

Original version by Stuart Hodgson.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
This commit is contained in:
Ben Hutchings 2013-12-05 20:13:22 +00:00
parent bd9a265db2
commit ef215e6476
2 changed files with 34 additions and 7 deletions
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38
drivers/net/ethernet/sfc/efx.c
View File

@ -2628,6 +2628,8 @@ static void efx_fini_struct(struct efx_nic *efx)
for (i = 0; i < EFX_MAX_CHANNELS; i++)
kfree(efx->channel[i]);
kfree(efx->vpd_sn);
if (efx->workqueue) {
destroy_workqueue(efx->workqueue);
efx->workqueue = NULL;
@ -2699,12 +2701,12 @@ static void efx_pci_remove(struct pci_dev *pci_dev)
* always appear within the first 512 bytes.
*/
#define SFC_VPD_LEN 512
static void efx_print_product_vpd(struct efx_nic *efx)
static void efx_probe_vpd_strings(struct efx_nic *efx)
{
struct pci_dev *dev = efx->pci_dev;
char vpd_data[SFC_VPD_LEN];
ssize_t vpd_size;
int i, j;
int ro_start, ro_size, i, j;
/* Get the vpd data from the device */
vpd_size = pci_read_vpd(dev, 0, sizeof(vpd_data), vpd_data);
@ -2714,14 +2716,15 @@ static void efx_print_product_vpd(struct efx_nic *efx)
}
/* Get the Read only section */
i = pci_vpd_find_tag(vpd_data, 0, vpd_size, PCI_VPD_LRDT_RO_DATA);
if (i < 0) {
ro_start = pci_vpd_find_tag(vpd_data, 0, vpd_size, PCI_VPD_LRDT_RO_DATA);
if (ro_start < 0) {
netif_err(efx, drv, efx->net_dev, "VPD Read-only not found\n");
return;
}
j = pci_vpd_lrdt_size(&vpd_data[i]);
i += PCI_VPD_LRDT_TAG_SIZE;
ro_size = pci_vpd_lrdt_size(&vpd_data[ro_start]);
j = ro_size;
i = ro_start + PCI_VPD_LRDT_TAG_SIZE;
if (i + j > vpd_size)
j = vpd_size - i;
@ -2741,6 +2744,27 @@ static void efx_print_product_vpd(struct efx_nic *efx)
netif_info(efx, drv, efx->net_dev,
"Part Number : %.*s\n", j, &vpd_data[i]);
i = ro_start + PCI_VPD_LRDT_TAG_SIZE;
j = ro_size;
i = pci_vpd_find_info_keyword(vpd_data, i, j, "SN");
if (i < 0) {
netif_err(efx, drv, efx->net_dev, "Serial number not found\n");
return;
}
j = pci_vpd_info_field_size(&vpd_data[i]);
i += PCI_VPD_INFO_FLD_HDR_SIZE;
if (i + j > vpd_size) {
netif_err(efx, drv, efx->net_dev, "Incomplete serial number\n");
return;
}
efx->vpd_sn = kmalloc(j + 1, GFP_KERNEL);
if (!efx->vpd_sn)
return;
snprintf(efx->vpd_sn, j + 1, "%s", &vpd_data[i]);
}
@ -2837,7 +2861,7 @@ static int efx_pci_probe(struct pci_dev *pci_dev,
netif_info(efx, probe, efx->net_dev,
"Solarflare NIC detected\n");
efx_print_product_vpd(efx);
efx_probe_vpd_strings(efx);
/* Set up basic I/O (BAR mappings etc) */
rc = efx_init_io(efx);

3
drivers/net/ethernet/sfc/net_driver.h
View File

@ -771,6 +771,7 @@ struct vfdi_status;
* @local_lock: Mutex protecting %local_addr_list and %local_page_list.
* @peer_work: Work item to broadcast peer addresses to VMs.
* @ptp_data: PTP state data
* @vpd_sn: Serial number read from VPD
* @monitor_work: Hardware monitor workitem
* @biu_lock: BIU (bus interface unit) lock
* @last_irq_cpu: Last CPU to handle a possible test interrupt. This
@ -920,6 +921,8 @@ struct efx_nic {
struct efx_ptp_data *ptp_data;
char *vpd_sn;
/* The following fields may be written more often */
struct delayed_work monitor_work ____cacheline_aligned_in_smp;