tg3: Add function status reporting

This patch adds code to update the status of the function to a common
location to the critical section added in the previous patch.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 3a1e19d383c7b91c8af52e8938ab60c40e3d26b3)

Signed-off-by: Joe Jin <joe.jin@oracle.com>

diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index c2c508682403a9de25f592fc7eab5224d32dde6f..63f8f93bbcc2fb6d41dab812789abb9e3491a964 100644 (file)
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -2191,18 +2191,66 @@ out:
        return 0;
 }
 
+#define TG3_GPIO_MSG_DRVR_PRES          0x00000001
+#define TG3_GPIO_MSG_NEED_VAUX          0x00000002
+#define TG3_GPIO_MSG_MASK               (TG3_GPIO_MSG_DRVR_PRES | \
+                                         TG3_GPIO_MSG_NEED_VAUX)
+#define TG3_GPIO_MSG_ALL_DRVR_PRES_MASK \
+       ((TG3_GPIO_MSG_DRVR_PRES << 0) | \
+        (TG3_GPIO_MSG_DRVR_PRES << 4) | \
+        (TG3_GPIO_MSG_DRVR_PRES << 8) | \
+        (TG3_GPIO_MSG_DRVR_PRES << 12))
+
+#define TG3_GPIO_MSG_ALL_NEED_VAUX_MASK \
+       ((TG3_GPIO_MSG_NEED_VAUX << 0) | \
+        (TG3_GPIO_MSG_NEED_VAUX << 4) | \
+        (TG3_GPIO_MSG_NEED_VAUX << 8) | \
+        (TG3_GPIO_MSG_NEED_VAUX << 12))
+
+static inline u32 tg3_set_function_status(struct tg3 *tp, u32 newstat)
+{
+       u32 status, shift;
+
+       if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717 ||
+           GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719)
+               status = tg3_ape_read32(tp, TG3_APE_GPIO_MSG);
+       else
+               status = tr32(TG3_CPMU_DRV_STATUS);
+
+       shift = TG3_APE_GPIO_MSG_SHIFT + 4 * tp->pci_fn;
+       status &= ~(TG3_GPIO_MSG_MASK << shift);
+       status |= (newstat << shift);
+
+       if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717 ||
+           GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719)
+               tg3_ape_write32(tp, TG3_APE_GPIO_MSG, status);
+       else
+               tw32(TG3_CPMU_DRV_STATUS, status);
+
+       return status >> TG3_APE_GPIO_MSG_SHIFT;
+}
+
 static inline int tg3_pwrsrc_switch_to_vmain(struct tg3 *tp)
 {
        if (!tg3_flag(tp, IS_NIC))
-               return;
-
-       if (tg3_ape_lock(tp, TG3_APE_LOCK_GPIO))
                return 0;
 
-       tw32_wait_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl,
-                   TG3_GRC_LCLCTL_PWRSW_DELAY);
+       if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717 ||
+           GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719 ||
+           GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5720) {
+               if (tg3_ape_lock(tp, TG3_APE_LOCK_GPIO))
+                       return -EIO;
 
-       tg3_ape_unlock(tp, TG3_APE_LOCK_GPIO);
+               tg3_set_function_status(tp, TG3_GPIO_MSG_DRVR_PRES);
+
+               tw32_wait_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl,
+                           TG3_GRC_LCLCTL_PWRSW_DELAY);
+
+               tg3_ape_unlock(tp, TG3_APE_LOCK_GPIO);
+       } else {
+               tw32_wait_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl,
+                           TG3_GRC_LCLCTL_PWRSW_DELAY);
+       }
 
        return 0;
 }
@@ -2216,10 +2264,6 @@ static void tg3_pwrsrc_die_with_vmain(struct tg3 *tp)
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5701)
                return;
 
-
-       if (tg3_ape_lock(tp, TG3_APE_LOCK_GPIO))
-               return;
-
        grc_local_ctrl = tp->grc_local_ctrl | GRC_LCLCTRL_GPIO_OE1;
 
        tw32_wait_f(GRC_LOCAL_CTRL,
@@ -2233,8 +2277,6 @@ static void tg3_pwrsrc_die_with_vmain(struct tg3 *tp)
        tw32_wait_f(GRC_LOCAL_CTRL,
                    grc_local_ctrl | GRC_LCLCTRL_GPIO_OUTPUT1,
                    TG3_GRC_LCLCTL_PWRSW_DELAY);
-
-       tg3_ape_unlock(tp, TG3_APE_LOCK_GPIO);
 }
 
 static void tg3_pwrsrc_switch_to_vaux(struct tg3 *tp)
@@ -2242,9 +2284,6 @@ static void tg3_pwrsrc_switch_to_vaux(struct tg3 *tp)
        if (!tg3_flag(tp, IS_NIC))
                return;
 
-       if (tg3_ape_lock(tp, TG3_APE_LOCK_GPIO))
-               return;
-
        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5701) {
                tw32_wait_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl |
@@ -2315,7 +2354,31 @@ static void tg3_pwrsrc_switch_to_vaux(struct tg3 *tp)
                                    TG3_GRC_LCLCTL_PWRSW_DELAY);
                }
        }
+}
+
+static void tg3_frob_aux_power_5717(struct tg3 *tp)
+{
+       u32 msg = 0;
+
+       /* Serialize power state transitions */
+       if (tg3_ape_lock(tp, TG3_APE_LOCK_GPIO))
+               return;
+
+       if (tg3_flag(tp, ENABLE_ASF) || tg3_flag(tp, ENABLE_APE) ||
+           tg3_flag(tp, WOL_ENABLE))
+               msg = TG3_GPIO_MSG_NEED_VAUX;
+
+       msg = tg3_set_function_status(tp, msg);
+
+       if (msg & TG3_GPIO_MSG_ALL_DRVR_PRES_MASK)
+               goto done;
 
+       if (msg & TG3_GPIO_MSG_ALL_NEED_VAUX_MASK)
+               tg3_pwrsrc_switch_to_vaux(tp);
+       else
+               tg3_pwrsrc_die_with_vmain(tp);
+
+done:
        tg3_ape_unlock(tp, TG3_APE_LOCK_GPIO);
 }
 
@@ -2325,15 +2388,17 @@ static void tg3_frob_aux_power(struct tg3 *tp)
 
        /* The GPIOs do something completely different on 57765. */
        if (!tg3_flag(tp, IS_NIC) ||
-           GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57765)
                return;
 
-       if ((GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704 ||
-            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5714 ||
-            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717 ||
-            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5720) &&
-           tp->pdev_peer != tp->pdev) {
+       if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717 ||
+           GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719 ||
+           GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5720) {
+               tg3_frob_aux_power_5717(tp);
+               return;
+       }
+
+       if (tp->pdev_peer && tp->pdev_peer != tp->pdev) {
                struct net_device *dev_peer;
 
                dev_peer = pci_get_drvdata(tp->pdev_peer);
@@ -13648,9 +13713,7 @@ static int __devinit tg3_get_invariants(struct tg3 *tp)
        }
 
        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704 ||
-           GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5714 ||
-           GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717 ||
-           GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5720)
+           GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5714)
                tp->pdev_peer = tg3_find_peer(tp);
 
        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717 ||

diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h
index 42e6feaae9afcd6588ef8147c4f7e56a4a9af0b3..3186d86b33f44dc348c0a0c67ccef4bd9c1aef75 100644 (file)
--- a/drivers/net/tg3.h
+++ b/drivers/net/tg3.h
@@ -1065,6 +1065,8 @@
 #define  RCVLSC_STATUS_ERROR_ATTN       0x00000004
 /* 0x3408 --> 0x3600 unused */
 
+#define TG3_CPMU_DRV_STATUS            0x0000344c
+
 /* CPMU registers */
 #define TG3_CPMU_CTRL                  0x00003600
 #define  CPMU_CTRL_LINK_IDLE_MODE       0x00000200
@@ -2277,6 +2279,8 @@
 
 
 /* APE registers.  Accessible through BAR1 */
+#define TG3_APE_GPIO_MSG               0x0008
+#define TG3_APE_GPIO_MSG_SHIFT         4
 #define TG3_APE_EVENT                  0x000c
 #define  APE_EVENT_1                    0x00000001
 #define TG3_APE_LOCK_REQ               0x002c