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Message-ID: <1198182780.9163.33.camel@dell>
Date: Thu, 20 Dec 2007 12:33:00 -0800
From: "Michael Chan" <mchan@...adcom.com>
To: davem@...emloft.net, netdev@...r.kernel.org
Subject: [PATCH 7/9][BNX2]: Add support for a new tx ring.
[BNX2]: Add support for a new tx ring.
To separate TX IRQs into a different MSIX vector, we need to
support a new tx ring. The original tx ring will still be used
when not using MSIX.
Signed-off-by: Michael Chan <mchan@...adcom.com>
diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index 196d053..a4ed6ca 100644
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -2378,7 +2378,10 @@ bnx2_get_hw_tx_cons(struct bnx2_napi *bnapi)
{
u16 cons;
- cons = bnapi->status_blk->status_tx_quick_consumer_index0;
+ if (bnapi->int_num == 0)
+ cons = bnapi->status_blk->status_tx_quick_consumer_index0;
+ else
+ cons = bnapi->status_blk_msix->status_tx_quick_consumer_index;
if (unlikely((cons & MAX_TX_DESC_CNT) == MAX_TX_DESC_CNT))
cons++;
@@ -2389,7 +2392,6 @@ static void
bnx2_tx_int(struct bnx2 *bp, struct bnx2_napi *bnapi)
{
u16 hw_cons, sw_cons, sw_ring_cons;
- int tx_free_bd = 0;
hw_cons = bnx2_get_hw_tx_cons(bnapi);
sw_cons = bnapi->tx_cons;
@@ -2439,8 +2441,6 @@ bnx2_tx_int(struct bnx2 *bp, struct bnx2_napi *bnapi)
sw_cons = NEXT_TX_BD(sw_cons);
- tx_free_bd += last + 1;
-
dev_kfree_skb(skb);
hw_cons = bnx2_get_hw_tx_cons(bnapi);
@@ -4369,6 +4369,24 @@ bnx2_init_chip(struct bnx2 *bp)
BNX2_HC_CONFIG_COLLECT_STATS;
}
+ if (bp->flags & USING_MSIX_FLAG) {
+ REG_WR(bp, BNX2_HC_MSIX_BIT_VECTOR,
+ BNX2_HC_MSIX_BIT_VECTOR_VAL);
+
+ REG_WR(bp, BNX2_HC_SB_CONFIG_1,
+ BNX2_HC_SB_CONFIG_1_TX_TMR_MODE |
+ BNX2_HC_SB_CONFIG_1_ONE_SHOT);
+
+ REG_WR(bp, BNX2_HC_TX_QUICK_CONS_TRIP_1,
+ (bp->tx_quick_cons_trip_int << 16) |
+ bp->tx_quick_cons_trip);
+
+ REG_WR(bp, BNX2_HC_TX_TICKS_1,
+ (bp->tx_ticks_int << 16) | bp->tx_ticks);
+
+ val |= BNX2_HC_CONFIG_SB_ADDR_INC_128B;
+ }
+
if (bp->flags & ONE_SHOT_MSI_FLAG)
val |= BNX2_HC_CONFIG_ONE_SHOT;
@@ -4401,6 +4419,25 @@ bnx2_init_chip(struct bnx2 *bp)
}
static void
+bnx2_clear_ring_states(struct bnx2 *bp)
+{
+ struct bnx2_napi *bnapi;
+ int i;
+
+ for (i = 0; i < BNX2_MAX_MSIX_VEC; i++) {
+ bnapi = &bp->bnx2_napi[i];
+
+ bnapi->tx_cons = 0;
+ bnapi->hw_tx_cons = 0;
+ bnapi->rx_prod_bseq = 0;
+ bnapi->rx_prod = 0;
+ bnapi->rx_cons = 0;
+ bnapi->rx_pg_prod = 0;
+ bnapi->rx_pg_cons = 0;
+ }
+}
+
+static void
bnx2_init_tx_context(struct bnx2 *bp, u32 cid)
{
u32 val, offset0, offset1, offset2, offset3;
@@ -4433,8 +4470,17 @@ static void
bnx2_init_tx_ring(struct bnx2 *bp)
{
struct tx_bd *txbd;
- u32 cid;
- struct bnx2_napi *bnapi = &bp->bnx2_napi[0];
+ u32 cid = TX_CID;
+ struct bnx2_napi *bnapi;
+
+ bp->tx_vec = 0;
+ if (bp->flags & USING_MSIX_FLAG) {
+ cid = TX_TSS_CID;
+ bp->tx_vec = BNX2_TX_VEC;
+ REG_WR(bp, BNX2_TSCH_TSS_CFG, BNX2_TX_INT_NUM |
+ (TX_TSS_CID << 7));
+ }
+ bnapi = &bp->bnx2_napi[bp->tx_vec];
bp->tx_wake_thresh = bp->tx_ring_size / 2;
@@ -4444,11 +4490,8 @@ bnx2_init_tx_ring(struct bnx2 *bp)
txbd->tx_bd_haddr_lo = (u64) bp->tx_desc_mapping & 0xffffffff;
bp->tx_prod = 0;
- bnapi->tx_cons = 0;
- bnapi->hw_tx_cons = 0;
bp->tx_prod_bseq = 0;
- cid = TX_CID;
bp->tx_bidx_addr = MB_GET_CID_ADDR(cid) + BNX2_L2CTX_TX_HOST_BIDX;
bp->tx_bseq_addr = MB_GET_CID_ADDR(cid) + BNX2_L2CTX_TX_HOST_BSEQ;
@@ -4487,12 +4530,6 @@ bnx2_init_rx_ring(struct bnx2 *bp)
u32 val, rx_cid_addr = GET_CID_ADDR(RX_CID);
struct bnx2_napi *bnapi = &bp->bnx2_napi[0];
- bnapi->rx_prod = 0;
- bnapi->rx_cons = 0;
- bnapi->rx_prod_bseq = 0;
- bnapi->rx_pg_prod = 0;
- bnapi->rx_pg_cons = 0;
-
bnx2_init_rxbd_rings(bp->rx_desc_ring, bp->rx_desc_mapping,
bp->rx_buf_use_size, bp->rx_max_ring);
@@ -4694,6 +4731,7 @@ bnx2_reset_nic(struct bnx2 *bp, u32 reset_code)
if ((rc = bnx2_init_chip(bp)) != 0)
return rc;
+ bnx2_clear_ring_states(bp);
bnx2_init_tx_ring(bp);
bnx2_init_rx_ring(bp);
return 0;
@@ -4965,7 +5003,11 @@ bnx2_run_loopback(struct bnx2 *bp, int loopback_mode)
struct sw_bd *rx_buf;
struct l2_fhdr *rx_hdr;
int ret = -ENODEV;
- struct bnx2_napi *bnapi = &bp->bnx2_napi[0];
+ struct bnx2_napi *bnapi = &bp->bnx2_napi[0], *tx_napi;
+
+ tx_napi = bnapi;
+ if (bp->flags & USING_MSIX_FLAG)
+ tx_napi = &bp->bnx2_napi[BNX2_TX_VEC];
if (loopback_mode == BNX2_MAC_LOOPBACK) {
bp->loopback = MAC_LOOPBACK;
@@ -5030,7 +5072,7 @@ bnx2_run_loopback(struct bnx2 *bp, int loopback_mode)
pci_unmap_single(bp->pdev, map, pkt_size, PCI_DMA_TODEVICE);
dev_kfree_skb(skb);
- if (bnx2_get_hw_tx_cons(bnapi) != bp->tx_prod)
+ if (bnx2_get_hw_tx_cons(tx_napi) != bp->tx_prod)
goto loopback_test_done;
rx_idx = bnx2_get_hw_rx_cons(bnapi);
@@ -5324,7 +5366,7 @@ bnx2_request_irq(struct bnx2 *bp)
for (i = 0; i < bp->irq_nvecs; i++) {
irq = &bp->irq_tbl[i];
- rc = request_irq(irq->vector, irq->handler, flags, dev->name,
+ rc = request_irq(irq->vector, irq->handler, flags, irq->name,
dev);
if (rc)
break;
diff --git a/drivers/net/bnx2.h b/drivers/net/bnx2.h
index d71ceb6..68fb590 100644
--- a/drivers/net/bnx2.h
+++ b/drivers/net/bnx2.h
@@ -6529,6 +6529,9 @@ struct flash_spec {
#define BNX2_MAX_MSIX_HW_VEC 9
#define BNX2_MAX_MSIX_VEC 1
+#define BNX2_BASE_VEC 0
+#define BNX2_TX_VEC 1
+#define BNX2_TX_INT_NUM (BNX2_TX_VEC << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT)
struct bnx2_irq {
irq_handler_t handler;
@@ -6541,6 +6544,7 @@ struct bnx2_napi {
struct napi_struct napi ____cacheline_aligned;
struct bnx2 *bp;
struct status_block *status_blk;
+ struct status_block_msix *status_blk_msix;
u32 last_status_idx;
u32 int_num;
@@ -6583,6 +6587,7 @@ struct bnx2 {
u32 tx_prod_bseq __attribute__((aligned(L1_CACHE_BYTES)));
u16 tx_prod;
+ u8 tx_vec;
u32 tx_bidx_addr;
u32 tx_bseq_addr;
--
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