From 723344820aa405ac2663ab9e36fd27833d06129b Mon Sep 17 00:00:00 2001 From: Matt Carlson Date: Fri, 28 Aug 2009 14:03:01 +0000 Subject: [PATCH] tg3: Move per-int rx members to per-int struct This patch moves the rx_rcb, rx_rcb_mapping, and rx_rcb_ptr return ring device members to a per-interrupt structure. It also adds a new return ring consumer mailbox register member (consmbox) and converts the code to use it rather than a preprocessor constant. Signed-off-by: Matt Carlson Signed-off-by: David S. Miller --- drivers/net/tg3.c | 57 ++++++++++++++++++++++++++--------------------- drivers/net/tg3.h | 9 ++++---- 2 files changed, 37 insertions(+), 29 deletions(-) diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c index 5b8d6e033183..939574c571f7 100644 --- a/drivers/net/tg3.c +++ b/drivers/net/tg3.c @@ -657,7 +657,7 @@ static inline unsigned int tg3_has_work(struct tg3_napi *tnapi) } /* check for RX/TX work to do */ if (sblk->idx[0].tx_consumer != tp->tx_cons || - sblk->idx[0].rx_producer != tp->rx_rcb_ptr) + sblk->idx[0].rx_producer != tnapi->rx_rcb_ptr) work_exists = 1; return work_exists; @@ -4480,7 +4480,7 @@ static int tg3_rx(struct tg3_napi *tnapi, int budget) { struct tg3 *tp = tnapi->tp; u32 work_mask, rx_std_posted = 0; - u32 sw_idx = tp->rx_rcb_ptr; + u32 sw_idx = tnapi->rx_rcb_ptr; u16 hw_idx; int received; struct tg3_rx_prodring_set *tpr = &tp->prodring[0]; @@ -4494,7 +4494,7 @@ static int tg3_rx(struct tg3_napi *tnapi, int budget) work_mask = 0; received = 0; while (sw_idx != hw_idx && budget > 0) { - struct tg3_rx_buffer_desc *desc = &tp->rx_rcb[sw_idx]; + struct tg3_rx_buffer_desc *desc = &tnapi->rx_rcb[sw_idx]; unsigned int len; struct sk_buff *skb; dma_addr_t dma_addr; @@ -4622,8 +4622,8 @@ next_pkt_nopost: } /* ACK the status ring. */ - tp->rx_rcb_ptr = sw_idx; - tw32_rx_mbox(MAILBOX_RCVRET_CON_IDX_0 + TG3_64BIT_REG_LOW, sw_idx); + tnapi->rx_rcb_ptr = sw_idx; + tw32_rx_mbox(tnapi->consmbox, sw_idx); /* Refill RX ring(s). */ if (work_mask & RXD_OPAQUE_RING_STD) { @@ -4678,7 +4678,7 @@ static int tg3_poll_work(struct tg3_napi *tnapi, int work_done, int budget) * All RX "locking" is done by ensuring outside * code synchronizes with tg3->napi.poll() */ - if (sblk->idx[0].rx_producer != tp->rx_rcb_ptr) + if (sblk->idx[0].rx_producer != tnapi->rx_rcb_ptr) work_done += tg3_rx(tnapi, budget - work_done); return work_done; @@ -4768,7 +4768,7 @@ static irqreturn_t tg3_msi_1shot(int irq, void *dev_id) struct tg3 *tp = tnapi->tp; prefetch(tnapi->hw_status); - prefetch(&tp->rx_rcb[tp->rx_rcb_ptr]); + prefetch(&tnapi->rx_rcb[tnapi->rx_rcb_ptr]); if (likely(!tg3_irq_sync(tp))) napi_schedule(&tnapi->napi); @@ -4786,7 +4786,7 @@ static irqreturn_t tg3_msi(int irq, void *dev_id) struct tg3 *tp = tnapi->tp; prefetch(tnapi->hw_status); - prefetch(&tp->rx_rcb[tp->rx_rcb_ptr]); + prefetch(&tnapi->rx_rcb[tnapi->rx_rcb_ptr]); /* * Writing any value to intr-mbox-0 clears PCI INTA# and * chip-internal interrupt pending events. @@ -4837,7 +4837,7 @@ static irqreturn_t tg3_interrupt(int irq, void *dev_id) goto out; sblk->status &= ~SD_STATUS_UPDATED; if (likely(tg3_has_work(tnapi))) { - prefetch(&tp->rx_rcb[tp->rx_rcb_ptr]); + prefetch(&tnapi->rx_rcb[tnapi->rx_rcb_ptr]); napi_schedule(&tnapi->napi); } else { /* No work, shared interrupt perhaps? re-enable @@ -4894,7 +4894,7 @@ static irqreturn_t tg3_interrupt_tagged(int irq, void *dev_id) if (tg3_irq_sync(tp)) goto out; - prefetch(&tp->rx_rcb[tp->rx_rcb_ptr]); + prefetch(&tnapi->rx_rcb[tnapi->rx_rcb_ptr]); napi_schedule(&tnapi->napi); @@ -5745,13 +5745,17 @@ static void tg3_free_rings(struct tg3 *tp) */ static int tg3_init_rings(struct tg3 *tp) { + struct tg3_napi *tnapi = &tp->napi[0]; + /* Free up all the SKBs. */ tg3_free_rings(tp); /* Zero out all descriptors. */ - memset(tp->rx_rcb, 0, TG3_RX_RCB_RING_BYTES(tp)); memset(tp->tx_ring, 0, TG3_TX_RING_BYTES); + tnapi->rx_rcb_ptr = 0; + memset(tnapi->rx_rcb, 0, TG3_RX_RCB_RING_BYTES(tp)); + return tg3_rx_prodring_alloc(tp, &tp->prodring[0]); } @@ -5765,16 +5769,16 @@ static void tg3_free_consistent(struct tg3 *tp) kfree(tp->tx_buffers); tp->tx_buffers = NULL; - if (tp->rx_rcb) { - pci_free_consistent(tp->pdev, TG3_RX_RCB_RING_BYTES(tp), - tp->rx_rcb, tp->rx_rcb_mapping); - tp->rx_rcb = NULL; - } if (tp->tx_ring) { pci_free_consistent(tp->pdev, TG3_TX_RING_BYTES, tp->tx_ring, tp->tx_desc_mapping); tp->tx_ring = NULL; } + if (tnapi->rx_rcb) { + pci_free_consistent(tp->pdev, TG3_RX_RCB_RING_BYTES(tp), + tnapi->rx_rcb, tnapi->rx_rcb_mapping); + tnapi->rx_rcb = NULL; + } if (tnapi->hw_status) { pci_free_consistent(tp->pdev, TG3_HW_STATUS_SIZE, tnapi->hw_status, @@ -5805,11 +5809,6 @@ static int tg3_alloc_consistent(struct tg3 *tp) if (!tp->tx_buffers) goto err_out; - tp->rx_rcb = pci_alloc_consistent(tp->pdev, TG3_RX_RCB_RING_BYTES(tp), - &tp->rx_rcb_mapping); - if (!tp->rx_rcb) - goto err_out; - tp->tx_ring = pci_alloc_consistent(tp->pdev, TG3_TX_RING_BYTES, &tp->tx_desc_mapping); if (!tp->tx_ring) @@ -5823,6 +5822,14 @@ static int tg3_alloc_consistent(struct tg3 *tp) memset(tnapi->hw_status, 0, TG3_HW_STATUS_SIZE); + tnapi->rx_rcb = pci_alloc_consistent(tp->pdev, + TG3_RX_RCB_RING_BYTES(tp), + &tnapi->rx_rcb_mapping); + if (!tnapi->rx_rcb) + goto err_out; + + memset(tnapi->rx_rcb, 0, TG3_RX_RCB_RING_BYTES(tp)); + tp->hw_stats = pci_alloc_consistent(tp->pdev, sizeof(struct tg3_hw_stats), &tp->stats_mapping); @@ -7109,11 +7116,10 @@ static int tg3_reset_hw(struct tg3 *tp, int reset_phy) } } - tp->rx_rcb_ptr = 0; - tw32_rx_mbox(MAILBOX_RCVRET_CON_IDX_0 + TG3_64BIT_REG_LOW, 0); + tw32_rx_mbox(tp->napi[0].consmbox, 0); tg3_set_bdinfo(tp, NIC_SRAM_RCV_RET_RCB, - tp->rx_rcb_mapping, + tp->napi[0].rx_rcb_mapping, (TG3_RX_RCB_RING_SIZE(tp) << BDINFO_FLAGS_MAXLEN_SHIFT), 0); @@ -9956,7 +9962,7 @@ static int tg3_run_loopback(struct tg3 *tp, int loopback_mode) if (rx_idx != rx_start_idx + num_pkts) goto out; - desc = &tp->rx_rcb[rx_start_idx]; + desc = &rnapi->rx_rcb[rx_start_idx]; desc_idx = desc->opaque & RXD_OPAQUE_INDEX_MASK; opaque_key = desc->opaque & RXD_OPAQUE_RING_MASK; if (opaque_key != RXD_OPAQUE_RING_STD) @@ -13413,6 +13419,7 @@ static int __devinit tg3_init_one(struct pci_dev *pdev, tp->napi[0].tp = tp; tp->napi[0].int_mbox = MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW; + tp->napi[0].consmbox = MAILBOX_RCVRET_CON_IDX_0 + TG3_64BIT_REG_LOW; netif_napi_add(dev, &tp->napi[0].napi, tg3_poll, 64); dev->ethtool_ops = &tg3_ethtool_ops; dev->watchdog_timeo = TG3_TX_TIMEOUT; diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h index f46e6198a82b..b91ac29ae163 100644 --- a/drivers/net/tg3.h +++ b/drivers/net/tg3.h @@ -2497,8 +2497,13 @@ struct tg3_napi { u32 last_tag; u32 last_irq_tag; u32 int_mbox; + u32 consmbox; + u32 rx_rcb_ptr; + + struct tg3_rx_buffer_desc *rx_rcb; dma_addr_t status_mapping; + dma_addr_t rx_rcb_mapping; }; struct tg3 { @@ -2570,7 +2575,6 @@ struct tg3 { struct tg3_napi napi[TG3_IRQ_MAX_VECS]; void (*write32_rx_mbox) (struct tg3 *, u32, u32); - u32 rx_rcb_ptr; u32 rx_pending; u32 rx_jumbo_pending; u32 rx_std_max_post; @@ -2579,9 +2583,6 @@ struct tg3 { struct vlan_group *vlgrp; #endif - struct tg3_rx_buffer_desc *rx_rcb; - dma_addr_t rx_rcb_mapping; - struct tg3_rx_prodring_set prodring[1]; -- 2.20.1