From 507399f18ea5810de42f0ea228c14305a8f67512 Mon Sep 17 00:00:00 2001 From: Matt Carlson Date: Fri, 13 Nov 2009 13:03:37 +0000 Subject: [PATCH] tg3: Refine TSO and MSI discovery 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 Reviewed-by: Michael Chan Signed-off-by: David S. Miller --- drivers/net/tg3.c | 64 +++++++++++++++++++++++++---------------------- 1 file changed, 34 insertions(+), 30 deletions(-) diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c index f74d80d5515d..29276e62f128 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 -- 2.20.1