diff options
| author | Michael Chan <mchan@broadcom.com> | 2005-04-21 17:07:04 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2005-04-21 17:07:04 -0700 |
| commit | 314fba348e1f64a30b53d3cff5d96872424e8498 (patch) | |
| tree | 0f167465d14b4d8e6170097651eced60ab48be95 /drivers | |
| parent | 7d0c41ef89dad9008edf1c3c0022721ebad39999 (diff) | |
| download | lwn-314fba348e1f64a30b53d3cff5d96872424e8498.tar.gz lwn-314fba348e1f64a30b53d3cff5d96872424e8498.zip | |
[TG3]: Setup proper GPIO settings
Setup proper GPIO settings in tp->grc_local_ctrl before calling
tg3_set_power() state in tg3_get_invariants() and after chip reset.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/tg3.c | 34 |
1 files changed, 28 insertions, 6 deletions
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c index dd036c011c14..742340aebf7e 100644 --- a/drivers/net/tg3.c +++ b/drivers/net/tg3.c @@ -5336,10 +5336,23 @@ static int tg3_reset_hw(struct tg3 *tp) tw32_f(MAC_MODE, tp->mac_mode | MAC_MODE_RXSTAT_CLEAR | MAC_MODE_TXSTAT_CLEAR); udelay(40); - tp->grc_local_ctrl = GRC_LCLCTRL_INT_ON_ATTN | GRC_LCLCTRL_AUTO_SEEPROM; - if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700) + /* tp->grc_local_ctrl is partially set up during tg3_get_invariants(). + * If TG3_FLAG_EEPROM_WRITE_PROT is set, we should read the + * register to preserve the GPIO settings for LOMs. The GPIOs, + * whether used as inputs or outputs, are set by boot code after + * reset. + */ + if (tp->tg3_flags & TG3_FLAG_EEPROM_WRITE_PROT) { + u32 gpio_mask; + + gpio_mask = GRC_LCLCTRL_GPIO_OE0 | GRC_LCLCTRL_GPIO_OE2 | + GRC_LCLCTRL_GPIO_OUTPUT0 | GRC_LCLCTRL_GPIO_OUTPUT2; + tp->grc_local_ctrl |= tr32(GRC_LOCAL_CTRL) & gpio_mask; + + /* GPIO1 must be driven high for eeprom write protect */ tp->grc_local_ctrl |= (GRC_LCLCTRL_GPIO_OE1 | GRC_LCLCTRL_GPIO_OUTPUT1); + } tw32_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl); udelay(100); @@ -7430,8 +7443,8 @@ static int tg3_nvram_write_block(struct tg3 *tp, u32 offset, u32 len, u8 *buf) } if (tp->tg3_flags & TG3_FLAG_EEPROM_WRITE_PROT) { - tw32_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl | - GRC_LCLCTRL_GPIO_OE1); + tw32_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl & + ~GRC_LCLCTRL_GPIO_OUTPUT1); udelay(40); } @@ -7477,8 +7490,7 @@ static int tg3_nvram_write_block(struct tg3 *tp, u32 offset, u32 len, u8 *buf) } if (tp->tg3_flags & TG3_FLAG_EEPROM_WRITE_PROT) { - tw32_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl | - GRC_LCLCTRL_GPIO_OE1 | GRC_LCLCTRL_GPIO_OUTPUT1); + tw32_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl); udelay(40); } @@ -8045,6 +8057,16 @@ static int __devinit tg3_get_invariants(struct tg3 *tp) */ tg3_get_eeprom_hw_cfg(tp); + /* Set up tp->grc_local_ctrl before calling tg3_set_power_state(). + * GPIO1 driven high will bring 5700's external PHY out of reset. + * It is also used as eeprom write protect on LOMs. + */ + tp->grc_local_ctrl = GRC_LCLCTRL_INT_ON_ATTN | GRC_LCLCTRL_AUTO_SEEPROM; + if ((GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700) || + (tp->tg3_flags & TG3_FLAG_EEPROM_WRITE_PROT)) + tp->grc_local_ctrl |= (GRC_LCLCTRL_GPIO_OE1 | + GRC_LCLCTRL_GPIO_OUTPUT1); + /* Force the chip into D0. */ err = tg3_set_power_state(tp, 0); if (err) { |