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tg3: Enable GPHY APD on select devices

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GPHY Autopowerdown (APD) is a way to save power when energy is not
detected on the wire.  At the moment, only the 5784 and 5761 are
capable of enabling this mode.

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 2008-11-21 17:18:59 -08:00 committed by David S. Miller
parent 5e7dfd0fb9
commit 6833c043f9
2 changed files with 48 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

52
drivers/net/tg3.c
View File

@ -1474,6 +1474,34 @@ static void tg3_phydsp_write(struct tg3 *tp, u32 reg, u32 val)
tg3_writephy(tp, MII_TG3_DSP_RW_PORT, val);
}
static void tg3_phy_toggle_apd(struct tg3 *tp, bool enable)
{
u32 reg;
if (!(tp->tg3_flags2 & TG3_FLG2_5705_PLUS))
return;
reg = MII_TG3_MISC_SHDW_WREN |
MII_TG3_MISC_SHDW_SCR5_SEL |
MII_TG3_MISC_SHDW_SCR5_LPED |
MII_TG3_MISC_SHDW_SCR5_DLPTLM |
MII_TG3_MISC_SHDW_SCR5_SDTL |
MII_TG3_MISC_SHDW_SCR5_C125OE;
if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5784 || !enable)
reg |= MII_TG3_MISC_SHDW_SCR5_DLLAPD;
tg3_writephy(tp, MII_TG3_MISC_SHDW, reg);
reg = MII_TG3_MISC_SHDW_WREN |
MII_TG3_MISC_SHDW_APD_SEL |
MII_TG3_MISC_SHDW_APD_WKTM_84MS;
if (enable)
reg |= MII_TG3_MISC_SHDW_APD_ENABLE;
tg3_writephy(tp, MII_TG3_MISC_SHDW, reg);
}
static void tg3_phy_toggle_automdix(struct tg3 *tp, int enable)
{
u32 phy;
@ -1816,16 +1844,15 @@ static int tg3_phy_reset(struct tg3 *tp)
udelay(40);
tw32_f(TG3_CPMU_LSPD_1000MB_CLK, val);
}
/* Disable GPHY autopowerdown. */
tg3_writephy(tp, MII_TG3_MISC_SHDW,
MII_TG3_MISC_SHDW_WREN |
MII_TG3_MISC_SHDW_APD_SEL |
MII_TG3_MISC_SHDW_APD_WKTM_84MS);
}
tg3_phy_apply_otp(tp);
if (tp->tg3_flags3 & TG3_FLG3_PHY_ENABLE_APD)
tg3_phy_toggle_apd(tp, true);
else
tg3_phy_toggle_apd(tp, false);
out:
if (tp->tg3_flags2 & TG3_FLG2_PHY_ADC_BUG) {
tg3_writephy(tp, MII_TG3_AUX_CTRL, 0x0c00);
@ -10264,6 +10291,10 @@ static int tg3_test_loopback(struct tg3 *tp)
if (err)
return TG3_LOOPBACK_FAILED;
/* Turn off gphy autopowerdown. */
if (tp->tg3_flags3 & TG3_FLG3_PHY_ENABLE_APD)
tg3_phy_toggle_apd(tp, false);
if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5784 ||
GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5761 ||
GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5785) {
@ -10308,6 +10339,10 @@ static int tg3_test_loopback(struct tg3 *tp)
err |= TG3_PHY_LOOPBACK_FAILED;
}
/* Re-enable gphy autopowerdown. */
if (tp->tg3_flags3 & TG3_FLG3_PHY_ENABLE_APD)
tg3_phy_toggle_apd(tp, true);
return err;
}
@ -11596,6 +11631,11 @@ static void __devinit tg3_get_eeprom_hw_cfg(struct tg3 *tp)
if (cfg2 & (1 << 18))
tp->tg3_flags2 |= TG3_FLG2_SERDES_PREEMPHASIS;
if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5784 &&
GET_CHIP_REV(tp->pci_chip_rev_id) != CHIPREV_5784_AX &&
(cfg2 & NIC_SRAM_DATA_CFG_2_APD_EN))
tp->tg3_flags3 |= TG3_FLG3_PHY_ENABLE_APD;
if (tp->tg3_flags2 & TG3_FLG2_PCI_EXPRESS) {
u32 cfg3;

2
drivers/net/tg3.h
View File

@ -1822,6 +1822,7 @@
#define NIC_SRAM_DATA_CFG_2 0x00000d38
#define NIC_SRAM_DATA_CFG_2_APD_EN 0x00000400
#define SHASTA_EXT_LED_MODE_MASK 0x00018000
#define SHASTA_EXT_LED_LEGACY 0x00000000
#define SHASTA_EXT_LED_SHARED 0x00008000
@ -2619,6 +2620,7 @@ struct tg3 {
#define TG3_FLG3_RGMII_EXT_IBND_RX_EN 0x00000200
#define TG3_FLG3_RGMII_EXT_IBND_TX_EN 0x00000400
#define TG3_FLG3_CLKREQ_BUG 0x00000800
#define TG3_FLG3_PHY_ENABLE_APD 0x00001000
struct timer_list timer;
u16 timer_counter;