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Date: Fri, 28 Aug 2009 17:03:01 -0700
From: "Matt Carlson" <mcarlson@...adcom.com>
To: davem@...emloft.net
cc: netdev@...r.kernel.org, andy@...yhouse.net
Subject: [PATCH 15/17] 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 <mcarlson@...adcom.com>
---
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 5b8d6e0..939574c 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 f46e619..b91ac29 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];
--
1.6.3.3
--
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