From baf8a94a572928710e9e60967d153a7bf3aebd9c Mon Sep 17 00:00:00 2001 From: Matt Carlson Date: Tue, 1 Sep 2009 13:13:00 +0000 Subject: tg3: Add RSS support This patch adds code needed to enable RSS. Signed-off-by: Matt Carlson Reviewed-by: Benjamin Li Signed-off-by: David S. Miller --- drivers/net/tg3.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 52 insertions(+), 1 deletion(-) (limited to 'drivers/net/tg3.c') diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c index f51c29c6474..26e9db8c1b9 100644 --- a/drivers/net/tg3.c +++ b/drivers/net/tg3.c @@ -102,6 +102,7 @@ #define TG3_DEF_RX_RING_PENDING 200 #define TG3_RX_JUMBO_RING_SIZE 256 #define TG3_DEF_RX_JUMBO_RING_PENDING 100 +#define TG3_RSS_INDIR_TBL_SIZE 128 /* Do not place this n-ring entries value into the tp struct itself, * we really want to expose these constants to GCC so that modulo et @@ -7497,6 +7498,12 @@ static int tg3_reset_hw(struct tg3 *tp, int reset_phy) tw32_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl); udelay(100); + if (tp->tg3_flags2 & TG3_FLG2_USING_MSIX) { + val = tr32(MSGINT_MODE); + val |= MSGINT_MODE_MULTIVEC_EN | MSGINT_MODE_ENABLE; + tw32(MSGINT_MODE, val); + } + if (!(tp->tg3_flags2 & TG3_FLG2_5705_PLUS)) { tw32_f(DMAC_MODE, DMAC_MODE_ENABLE); udelay(40); @@ -7565,7 +7572,10 @@ static int tg3_reset_hw(struct tg3 *tp, int reset_phy) tw32(SNDDATAI_MODE, SNDDATAI_MODE_ENABLE); if (tp->tg3_flags2 & TG3_FLG2_HW_TSO) tw32(SNDDATAI_MODE, SNDDATAI_MODE_ENABLE | 0x8); - tw32(SNDBDI_MODE, SNDBDI_MODE_ENABLE | SNDBDI_MODE_ATTN_ENABLE); + val = SNDBDI_MODE_ENABLE | SNDBDI_MODE_ATTN_ENABLE; + if (tp->tg3_flags2 & TG3_FLG2_USING_MSIX) + val |= SNDBDI_MODE_MULTI_TXQ_EN; + tw32(SNDBDI_MODE, val); tw32(SNDBDS_MODE, SNDBDS_MODE_ENABLE | SNDBDS_MODE_ATTN_ENABLE); if (tp->pci_chip_rev_id == CHIPREV_ID_5701_A0) { @@ -7584,10 +7594,46 @@ static int tg3_reset_hw(struct tg3 *tp, int reset_phy) tw32_f(MAC_TX_MODE, tp->tx_mode); udelay(100); + if (tp->tg3_flags3 & TG3_FLG3_ENABLE_RSS) { + u32 reg = MAC_RSS_INDIR_TBL_0; + u8 *ent = (u8 *)&val; + + /* Setup the indirection table */ + for (i = 0; i < TG3_RSS_INDIR_TBL_SIZE; i++) { + int idx = i % sizeof(val); + + ent[idx] = i % (tp->irq_cnt - 1); + if (idx == sizeof(val) - 1) { + tw32(reg, val); + reg += 4; + } + } + + /* Setup the "secret" hash key. */ + tw32(MAC_RSS_HASH_KEY_0, 0x5f865437); + tw32(MAC_RSS_HASH_KEY_1, 0xe4ac62cc); + tw32(MAC_RSS_HASH_KEY_2, 0x50103a45); + tw32(MAC_RSS_HASH_KEY_3, 0x36621985); + tw32(MAC_RSS_HASH_KEY_4, 0xbf14c0e8); + tw32(MAC_RSS_HASH_KEY_5, 0x1bc27a1e); + tw32(MAC_RSS_HASH_KEY_6, 0x84f4b556); + tw32(MAC_RSS_HASH_KEY_7, 0x094ea6fe); + tw32(MAC_RSS_HASH_KEY_8, 0x7dda01e7); + tw32(MAC_RSS_HASH_KEY_9, 0xc04d7481); + } + tp->rx_mode = RX_MODE_ENABLE; if (tp->tg3_flags3 & TG3_FLG3_5755_PLUS) tp->rx_mode |= RX_MODE_IPV6_CSUM_ENABLE; + if (tp->tg3_flags3 & TG3_FLG3_ENABLE_RSS) + tp->rx_mode |= RX_MODE_RSS_ENABLE | + RX_MODE_RSS_ITBL_HASH_BITS_7 | + RX_MODE_RSS_IPV6_HASH_EN | + RX_MODE_RSS_TCP_IPV6_HASH_EN | + RX_MODE_RSS_IPV4_HASH_EN | + RX_MODE_RSS_TCP_IPV4_HASH_EN; + tw32_f(MAC_RX_MODE, tp->rx_mode); udelay(10); @@ -8112,6 +8158,8 @@ static bool tg3_enable_msix(struct tg3 *tp) tp->irq_cnt = rc; } + tp->tg3_flags3 |= TG3_FLG3_ENABLE_RSS; + for (i = 0; i < tp->irq_max; i++) tp->napi[i].irq_vec = msix_ent[i].vector; @@ -8140,6 +8188,8 @@ static void tg3_ints_init(struct tg3 *tp) if (tp->tg3_flags2 & TG3_FLG2_USING_MSI_OR_MSIX) { u32 msi_mode = tr32(MSGINT_MODE); + if (tp->tg3_flags2 & TG3_FLG2_USING_MSIX) + msi_mode |= MSGINT_MODE_MULTIVEC_EN; tw32(MSGINT_MODE, msi_mode | MSGINT_MODE_ENABLE); } defcfg: @@ -8157,6 +8207,7 @@ static void tg3_ints_fini(struct tg3 *tp) else if (tp->tg3_flags2 & TG3_FLG2_USING_MSI) pci_disable_msi(tp->pdev); tp->tg3_flags2 &= ~TG3_FLG2_USING_MSI_OR_MSIX; + tp->tg3_flags3 &= ~TG3_FLG3_ENABLE_RSS; } static int tg3_open(struct net_device *dev) -- cgit v1.2.3