sky2: pci power savings
Turn on special bits to save more power when device is shutdown.
Tested on a limited range of hardware, some of the bits are for hardware
that probably isn't even in production (like Yukon Supreme) and was ported
from the vendor driver.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/drivers/net/sky2.h b/drivers/net/sky2.h
index d63106c..1fa82bf 100644
--- a/drivers/net/sky2.h
+++ b/drivers/net/sky2.h
@@ -28,6 +28,11 @@
PCI_Y2_PHY2_POWD = 1<<27, /* Set PHY 2 to Power Down (YUKON-2) */
PCI_Y2_PHY1_POWD = 1<<26, /* Set PHY 1 to Power Down (YUKON-2) */
PCI_Y2_PME_LEGACY= 1<<15, /* PCI Express legacy power management mode */
+
+ PCI_PHY_LNK_TIM_MSK= 3L<<8,/* Bit 9.. 8: GPHY Link Trigger Timer */
+ PCI_ENA_L1_EVENT = 1<<7, /* Enable PEX L1 Event */
+ PCI_ENA_GPHY_LNK = 1<<6, /* Enable PEX L1 on GPHY Link down */
+ PCI_FORCE_PEX_L1 = 1<<5, /* Force to PEX L1 */
};
enum pci_dev_reg_2 {
@@ -45,7 +50,11 @@
/* PCI_OUR_REG_4 32 bit Our Register 4 (Yukon-ECU only) */
enum pci_dev_reg_4 {
- /* (Link Training & Status State Machine) */
+ /* (Link Training & Status State Machine) */
+ P_PEX_LTSSM_STAT_MSK = 0x7fL<<25, /* Bit 31..25: PEX LTSSM Mask */
+#define P_PEX_LTSSM_STAT(x) ((x << 25) & P_PEX_LTSSM_STAT_MSK)
+ P_PEX_LTSSM_L1_STAT = 0x34,
+ P_PEX_LTSSM_DET_STAT = 0x01,
P_TIMER_VALUE_MSK = 0xffL<<16, /* Bit 23..16: Timer Value Mask */
/* (Active State Power Management) */
P_FORCE_ASPM_REQUEST = 1<<15, /* Force ASPM Request (A1 only) */
@@ -454,6 +463,9 @@
CHIP_REV_YU_EX_A0 = 1,
CHIP_REV_YU_EX_B0 = 2,
};
+enum yukon_supr_rev {
+ CHIP_REV_YU_SU_A0 = 0,
+};
/* B2_Y2_CLK_GATE 8 bit Clock Gating (Yukon-2 only) */
@@ -2059,7 +2071,9 @@
#define SKY2_HW_NEW_LE 0x00000020 /* new LSOv2 format */
#define SKY2_HW_AUTO_TX_SUM 0x00000040 /* new IP decode for Tx */
#define SKY2_HW_ADV_POWER_CTL 0x00000080 /* additional PHY power regs */
+#define SKY2_HW_CLK_POWER 0x00000100 /* clock power management */
+ int pm_cap;
u8 chip_id;
u8 chip_rev;
u8 pmd_type;