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cxgb4: Allow for backward compatibility with new VPD scheme. 

New scheme calls for 3rd party VPD at offset 0x0 and Chelsio VPD at offset
0x400 of the function.  If no 3rd party VPD is present, then a copy of
Chelsio's VPD will be at offset 0x0 to keep in line with PCI spec which
requires the VPD to be present at offset 0x0.

Signed-off-by: Santosh Rastapur <santosh@chelsio.com>
Signed-off-by: Vipul Pandya <vipul@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Santosh Rastapur 2013-03-08 03:35:29 +00:00 committed by David S. Miller
parent 7c6baa304b
commit 47ce9c4821
1 changed files with 9 additions and 3 deletions
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12
drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
View File

@ -497,8 +497,9 @@ int t4_memory_write(struct adapter *adap, int mtype, u32 addr, u32 len,
}
#define EEPROM_STAT_ADDR 0x7bfc
#define VPD_BASE 0
#define VPD_LEN 512
#define VPD_BASE 0x400
#define VPD_BASE_OLD 0
/**
* t4_seeprom_wp - enable/disable EEPROM write protection
@ -524,7 +525,7 @@ int t4_seeprom_wp(struct adapter *adapter, bool enable)
int get_vpd_params(struct adapter *adapter, struct vpd_params *p)
{
u32 cclk_param, cclk_val;
int i, ret;
int i, ret, addr;
int ec, sn;
u8 *vpd, csum;
unsigned int vpdr_len, kw_offset, id_len;
@ -533,7 +534,12 @@ int get_vpd_params(struct adapter *adapter, struct vpd_params *p)
if (!vpd)
return -ENOMEM;
ret = pci_read_vpd(adapter->pdev, VPD_BASE, VPD_LEN, vpd);
ret = pci_read_vpd(adapter->pdev, VPD_BASE, sizeof(u32), vpd);
if (ret < 0)
goto out;
addr = *vpd == 0x82 ? VPD_BASE : VPD_BASE_OLD;
ret = pci_read_vpd(adapter->pdev, addr, VPD_LEN, vpd);
if (ret < 0)
goto out;