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tg3: Handle NVRAM absent cases 

Some 57780 ASIC revision parts do not have NVRAM.  Code the driver so
that it is tolerant of this configuration.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Matt Carlson 2009-04-20 06:57:14 +00:00 committed by David S. Miller
parent 624f8e5082
commit df259d8cba
2 changed files with 33 additions and 4 deletions
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36
drivers/net/tg3.c
View File

@ -8544,6 +8544,9 @@ static int tg3_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
u32 i, offset, len, b_offset, b_count;
__be32 val;
if (tp->tg3_flags3 & TG3_FLG3_NO_NVRAM)
return -EINVAL;
if (tp->link_config.phy_is_low_power)
return -EAGAIN;
@ -8609,7 +8612,8 @@ static int tg3_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
if (tp->link_config.phy_is_low_power)
return -EAGAIN;
if (eeprom->magic != TG3_EEPROM_MAGIC)
if ((tp->tg3_flags3 & TG3_FLG3_NO_NVRAM) ||
eeprom->magic != TG3_EEPROM_MAGIC)
return -EINVAL;
offset = eeprom->offset;
@ -9206,6 +9210,9 @@ static int tg3_test_nvram(struct tg3 *tp)
__be32 *buf;
int i, j, k, err = 0, size;
if (tp->tg3_flags3 & TG3_FLG3_NO_NVRAM)
return 0;
if (tg3_nvram_read(tp, 0, &magic) != 0)
return -EIO;
@ -10188,7 +10195,8 @@ static void __devinit tg3_get_nvram_size(struct tg3 *tp)
{
u32 val;
if (tg3_nvram_read(tp, 0, &val) != 0)
if ((tp->tg3_flags3 & TG3_FLG3_NO_NVRAM) ||
tg3_nvram_read(tp, 0, &val) != 0)
return;
/* Selfboot format */
@ -10570,6 +10578,7 @@ static void __devinit tg3_get_57780_nvram_info(struct tg3 *tp)
}
break;
default:
tp->tg3_flags3 |= TG3_FLG3_NO_NVRAM;
return;
}
@ -11370,7 +11379,8 @@ static void __devinit tg3_read_partno(struct tg3 *tp)
unsigned int i;
u32 magic;
if (tg3_nvram_read(tp, 0x0, &magic))
if ((tp->tg3_flags3 & TG3_FLG3_NO_NVRAM) ||
tg3_nvram_read(tp, 0x0, &magic))
goto out_not_found;
if (magic == TG3_EEPROM_MAGIC) {
@ -11462,6 +11472,15 @@ static void __devinit tg3_read_partno(struct tg3 *tp)
out_not_found:
if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906)
strcpy(tp->board_part_number, "BCM95906");
else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57780 &&
tp->pdev->device == TG3PCI_DEVICE_TIGON3_57780)
strcpy(tp->board_part_number, "BCM57780");
else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57780 &&
tp->pdev->device == TG3PCI_DEVICE_TIGON3_57760)
strcpy(tp->board_part_number, "BCM57760");
else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57780 &&
tp->pdev->device == TG3PCI_DEVICE_TIGON3_57790)
strcpy(tp->board_part_number, "BCM57790");
else
strcpy(tp->board_part_number, "none");
}
@ -11672,6 +11691,14 @@ static void __devinit tg3_read_fw_ver(struct tg3 *tp)
{
u32 val;
if (tp->tg3_flags3 & TG3_FLG3_NO_NVRAM) {
tp->fw_ver[0] = 's';
tp->fw_ver[1] = 'b';
tp->fw_ver[2] = '\0';
return;
}
if (tg3_nvram_read(tp, 0, &val))
return;
@ -12459,7 +12486,8 @@ static int __devinit tg3_get_device_address(struct tg3 *tp)
}
if (!addr_ok) {
/* Next, try NVRAM. */
if (!tg3_nvram_read_be32(tp, mac_offset + 0, &hi) &&
if (!(tp->tg3_flags3 & TG3_FLG3_NO_NVRAM) &&
!tg3_nvram_read_be32(tp, mac_offset + 0, &hi) &&
!tg3_nvram_read_be32(tp, mac_offset + 4, &lo)) {
memcpy(&dev->dev_addr[0], ((char *)&hi) + 2, 2);
memcpy(&dev->dev_addr[2], (char *)&lo, sizeof(lo));

1
drivers/net/tg3.h
View File

@ -2636,6 +2636,7 @@ struct tg3 {
#define TG3_FLG3_CLKREQ_BUG 0x00000800
#define TG3_FLG3_PHY_ENABLE_APD 0x00001000
#define TG3_FLG3_5755_PLUS 0x00002000
#define TG3_FLG3_NO_NVRAM 0x00004000
struct timer_list timer;
u16 timer_counter;