diff mbox

[05/20] tg3: Refine TSO and MSI discovery

Message ID 1258153432-7036-6-git-send-email-mcarlson@broadcom.com
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Matt Carlson Nov. 13, 2009, 11:03 p.m. UTC 
This patch consolidates the TSO capability discovery code into its own
code block.  The code that decides whether or not to allow TSO is then
cleaned up.  Finally, the patch consolidates all MSI and MSIX
capability code into a single code block.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
---
 drivers/net/tg3.c |   64 ++++++++++++++++++++++++++++------------------------
 1 files changed, 34 insertions(+), 30 deletions(-)
diff mbox

Patch

diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index f74d80d..29276e6 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -12669,6 +12669,27 @@  static int __devinit tg3_get_invariants(struct tg3 *tp)
 			tp->dev->features |= NETIF_F_IPV6_CSUM;
 	}
 
+	/* Determine TSO capabilities */
+	if ((tp->tg3_flags3 & TG3_FLG3_5755_PLUS) ||
+	    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906)
+		tp->tg3_flags2 |= TG3_FLG2_HW_TSO_2;
+	else if (tp->tg3_flags2 & TG3_FLG2_5750_PLUS) {
+		tp->tg3_flags2 |= TG3_FLG2_HW_TSO_1 | TG3_FLG2_TSO_BUG;
+		if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5750 &&
+		    tp->pci_chip_rev_id >= CHIPREV_ID_5750_C2)
+			tp->tg3_flags2 &= ~TG3_FLG2_TSO_BUG;
+	} else if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5700 &&
+		   GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5701 &&
+		   tp->pci_chip_rev_id != CHIPREV_ID_5705_A0) {
+		tp->tg3_flags2 |= TG3_FLG2_TSO_BUG;
+		if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5705)
+			tp->fw_needed = FIRMWARE_TG3TSO5;
+		else
+			tp->fw_needed = FIRMWARE_TG3TSO;
+	}
+
+	tp->irq_max = 1;
+
 	if (tp->tg3_flags2 & TG3_FLG2_5750_PLUS) {
 		tp->tg3_flags |= TG3_FLAG_SUPPORT_MSI;
 		if (GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5750_AX ||
@@ -12680,22 +12701,13 @@  static int __devinit tg3_get_invariants(struct tg3 *tp)
 
 		if ((tp->tg3_flags3 & TG3_FLG3_5755_PLUS) ||
 		    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906) {
-			tp->tg3_flags2 |= TG3_FLG2_HW_TSO_2;
 			tp->tg3_flags2 |= TG3_FLG2_1SHOT_MSI;
-		} else {
-			tp->tg3_flags2 |= TG3_FLG2_HW_TSO_1 | TG3_FLG2_TSO_BUG;
-			if (GET_ASIC_REV(tp->pci_chip_rev_id) ==
-				ASIC_REV_5750 &&
-	     		    tp->pci_chip_rev_id >= CHIPREV_ID_5750_C2)
-				tp->tg3_flags2 &= ~TG3_FLG2_TSO_BUG;
 		}
-	}
-
-	tp->irq_max = 1;
 
-	if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717) {
-		tp->tg3_flags |= TG3_FLAG_SUPPORT_MSIX;
-		tp->irq_max = TG3_IRQ_MAX_VECS;
+		if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717) {
+			tp->tg3_flags |= TG3_FLAG_SUPPORT_MSIX;
+			tp->irq_max = TG3_IRQ_MAX_VECS;
+		}
 	}
 
 	if (!(tp->tg3_flags3 & TG3_FLG3_5755_PLUS)) {
@@ -14108,25 +14120,17 @@  static int __devinit tg3_init_one(struct pci_dev *pdev,
 
 	tg3_init_bufmgr_config(tp);
 
-	if (tp->pci_chip_rev_id == CHIPREV_ID_5701_A0)
-		tp->fw_needed = FIRMWARE_TG3;
-
-	if (tp->tg3_flags2 & TG3_FLG2_HW_TSO) {
+	/* Selectively allow TSO based on operating conditions */
+	if ((tp->tg3_flags2 & TG3_FLG2_HW_TSO) ||
+	    (tp->fw_needed && !(tp->tg3_flags & TG3_FLAG_ENABLE_ASF)))
 		tp->tg3_flags2 |= TG3_FLG2_TSO_CAPABLE;
+	else {
+		tp->tg3_flags2 &= ~(TG3_FLG2_TSO_CAPABLE | TG3_FLG2_TSO_BUG);
+		tp->fw_needed = NULL;
 	}
-	else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700 ||
-	    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5701 ||
-	    tp->pci_chip_rev_id == CHIPREV_ID_5705_A0 ||
-	    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906 ||
-	    (tp->tg3_flags & TG3_FLAG_ENABLE_ASF) != 0) {
-		tp->tg3_flags2 &= ~TG3_FLG2_TSO_CAPABLE;
-	} else {
-		tp->tg3_flags2 |= TG3_FLG2_TSO_CAPABLE | TG3_FLG2_TSO_BUG;
-		if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5705)
-			tp->fw_needed = FIRMWARE_TG3TSO5;
-		else
-			tp->fw_needed = FIRMWARE_TG3TSO;
-	}
+
+	if (tp->pci_chip_rev_id == CHIPREV_ID_5701_A0)
+		tp->fw_needed = FIRMWARE_TG3;
 
 	/* TSO is on by default on chips that support hardware TSO.
 	 * Firmware TSO on older chips gives lower performance, so it