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tg3: Move general int members to a per-int struct

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This patch moves the last_tag, last_tag_irq, and hw_status device
members to a per-interrupt structure.  It also adds a new interrupt
mailbox member (int_mbox) and converts the code to use it rather than a
direct preprocessor constant.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Matt Carlson 2009-08-28 14:02:40 +00:00 committed by David S. Miller
parent 17375d25d3
commit 898a56f8d8
2 changed files with 80 additions and 66 deletions
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134
drivers/net/tg3.c
View file

@ -615,13 +615,13 @@ static void tg3_disable_ints(struct tg3 *tp)
{
tw32(TG3PCI_MISC_HOST_CTRL,
(tp->misc_host_ctrl | MISC_HOST_CTRL_MASK_PCI_INT));
tw32_mailbox_f(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW, 0x00000001);
tw32_mailbox_f(tp->napi[0].int_mbox, 0x00000001);
}
static inline void tg3_cond_int(struct tg3 *tp)
{
if (!(tp->tg3_flags & TG3_FLAG_TAGGED_STATUS) &&
(tp->hw_status->status & SD_STATUS_UPDATED))
(tp->napi[0].hw_status->status & SD_STATUS_UPDATED))
tw32(GRC_LOCAL_CTRL, tp->grc_local_ctrl | GRC_LCLCTRL_SETINT);
else
tw32(HOSTCC_MODE, tp->coalesce_mode |
@ -630,23 +630,22 @@ static inline void tg3_cond_int(struct tg3 *tp)
static void tg3_enable_ints(struct tg3 *tp)
{
struct tg3_napi *tnapi = &tp->napi[0];
tp->irq_sync = 0;
wmb();
tw32(TG3PCI_MISC_HOST_CTRL,
(tp->misc_host_ctrl & ~MISC_HOST_CTRL_MASK_PCI_INT));
tw32_mailbox_f(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW,
(tp->last_tag << 24));
tw32_mailbox_f(tnapi->int_mbox, tnapi->last_tag << 24);
if (tp->tg3_flags2 & TG3_FLG2_1SHOT_MSI)
tw32_mailbox_f(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW,
(tp->last_tag << 24));
tw32_mailbox_f(tnapi->int_mbox, tnapi->last_tag << 24);
tg3_cond_int(tp);
}
static inline unsigned int tg3_has_work(struct tg3_napi *tnapi)
{
struct tg3 *tp = tnapi->tp;
struct tg3_hw_status *sblk = tp->hw_status;
struct tg3_hw_status *sblk = tnapi->hw_status;
unsigned int work_exists = 0;
/* check for phy events */
@ -673,8 +672,7 @@ static void tg3_int_reenable(struct tg3_napi *tnapi)
{
struct tg3 *tp = tnapi->tp;
tw32_mailbox(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW,
tp->last_tag << 24);
tw32_mailbox(tnapi->int_mbox, tnapi->last_tag << 24);
mmiowb();
/* When doing tagged status, this work check is unnecessary.
@ -696,13 +694,14 @@ static inline void tg3_netif_stop(struct tg3 *tp)
static inline void tg3_netif_start(struct tg3 *tp)
{
struct tg3_napi *tnapi = &tp->napi[0];
netif_wake_queue(tp->dev);
/* NOTE: unconditional netif_wake_queue is only appropriate
* so long as all callers are assured to have free tx slots
* (such as after tg3_init_hw)
*/
napi_enable(&tp->napi[0].napi);
tp->hw_status->status |= SD_STATUS_UPDATED;
napi_enable(&tnapi->napi);
tnapi->hw_status->status |= SD_STATUS_UPDATED;
tg3_enable_ints(tp);
}
@ -3902,9 +3901,9 @@ static int tg3_setup_fiber_phy(struct tg3 *tp, int force_reset)
else
current_link_up = tg3_setup_fiber_by_hand(tp, mac_status);
tp->hw_status->status =
tp->napi[0].hw_status->status =
(SD_STATUS_UPDATED |
(tp->hw_status->status & ~SD_STATUS_LINK_CHG));
(tp->napi[0].hw_status->status & ~SD_STATUS_LINK_CHG));
for (i = 0; i < 100; i++) {
tw32_f(MAC_STATUS, (MAC_STATUS_SYNC_CHANGED |
@ -4284,7 +4283,7 @@ static inline u32 tg3_tx_avail(struct tg3 *tp)
static void tg3_tx(struct tg3_napi *tnapi)
{
struct tg3 *tp = tnapi->tp;
u32 hw_idx = tp->hw_status->idx[0].tx_consumer;
u32 hw_idx = tnapi->hw_status->idx[0].tx_consumer;
u32 sw_idx = tp->tx_cons;
while (sw_idx != hw_idx) {
@ -4486,7 +4485,7 @@ static int tg3_rx(struct tg3_napi *tnapi, int budget)
int received;
struct tg3_rx_prodring_set *tpr = &tp->prodring[0];
hw_idx = tp->hw_status->idx[0].rx_producer;
hw_idx = tnapi->hw_status->idx[0].rx_producer;
/*
* We need to order the read of hw_idx and the read of
* the opaque cookie.
@ -4617,7 +4616,7 @@ next_pkt_nopost:
/* Refresh hw_idx to see if there is new work */
if (sw_idx == hw_idx) {
hw_idx = tp->hw_status->idx[0].rx_producer;
hw_idx = tnapi->hw_status->idx[0].rx_producer;
rmb();
}
}
@ -4645,7 +4644,7 @@ next_pkt_nopost:
static int tg3_poll_work(struct tg3_napi *tnapi, int work_done, int budget)
{
struct tg3 *tp = tnapi->tp;
struct tg3_hw_status *sblk = tp->hw_status;
struct tg3_hw_status *sblk = tnapi->hw_status;
/* handle link change and other phy events */
if (!(tp->tg3_flags &
@ -4690,7 +4689,7 @@ static int tg3_poll(struct napi_struct *napi, int budget)
struct tg3_napi *tnapi = container_of(napi, struct tg3_napi, napi);
struct tg3 *tp = tnapi->tp;
int work_done = 0;
struct tg3_hw_status *sblk = tp->hw_status;
struct tg3_hw_status *sblk = tnapi->hw_status;
while (1) {
work_done = tg3_poll_work(tnapi, work_done, budget);
@ -4706,8 +4705,8 @@ static int tg3_poll(struct napi_struct *napi, int budget)
* to tell the hw how much work has been processed,
* so we must read it before checking for more work.
*/
tp->last_tag = sblk->status_tag;
tp->last_irq_tag = tp->last_tag;
tnapi->last_tag = sblk->status_tag;
tnapi->last_irq_tag = tnapi->last_tag;
rmb();
} else
sblk->status &= ~SD_STATUS_UPDATED;
@ -4768,7 +4767,7 @@ static irqreturn_t tg3_msi_1shot(int irq, void *dev_id)
struct tg3_napi *tnapi = dev_id;
struct tg3 *tp = tnapi->tp;
prefetch(tp->hw_status);
prefetch(tnapi->hw_status);
prefetch(&tp->rx_rcb[tp->rx_rcb_ptr]);
if (likely(!tg3_irq_sync(tp)))
@ -4786,7 +4785,7 @@ static irqreturn_t tg3_msi(int irq, void *dev_id)
struct tg3_napi *tnapi = dev_id;
struct tg3 *tp = tnapi->tp;
prefetch(tp->hw_status);
prefetch(tnapi->hw_status);
prefetch(&tp->rx_rcb[tp->rx_rcb_ptr]);
/*
* Writing any value to intr-mbox-0 clears PCI INTA# and
@ -4806,7 +4805,7 @@ static irqreturn_t tg3_interrupt(int irq, void *dev_id)
{
struct tg3_napi *tnapi = dev_id;
struct tg3 *tp = tnapi->tp;
struct tg3_hw_status *sblk = tp->hw_status;
struct tg3_hw_status *sblk = tnapi->hw_status;
unsigned int handled = 1;
/* In INTx mode, it is possible for the interrupt to arrive at
@ -4855,7 +4854,7 @@ static irqreturn_t tg3_interrupt_tagged(int irq, void *dev_id)
{
struct tg3_napi *tnapi = dev_id;
struct tg3 *tp = tnapi->tp;
struct tg3_hw_status *sblk = tp->hw_status;
struct tg3_hw_status *sblk = tnapi->hw_status;
unsigned int handled = 1;
/* In INTx mode, it is possible for the interrupt to arrive at
@ -4863,7 +4862,7 @@ static irqreturn_t tg3_interrupt_tagged(int irq, void *dev_id)
* Reading the PCI State register will confirm whether the
* interrupt is ours and will flush the status block.
*/
if (unlikely(sblk->status_tag == tp->last_irq_tag)) {
if (unlikely(sblk->status_tag == tnapi->last_irq_tag)) {
if ((tp->tg3_flags & TG3_FLAG_CHIP_RESETTING) ||
(tr32(TG3PCI_PCISTATE) & PCISTATE_INT_NOT_ACTIVE)) {
handled = 0;
@ -4890,7 +4889,7 @@ static irqreturn_t tg3_interrupt_tagged(int irq, void *dev_id)
* so that the above check can report that the screaming interrupts
* are unhandled. Eventually they will be silenced.
*/
tp->last_irq_tag = sblk->status_tag;
tnapi->last_irq_tag = sblk->status_tag;
if (tg3_irq_sync(tp))
goto out;
@ -4908,7 +4907,7 @@ static irqreturn_t tg3_test_isr(int irq, void *dev_id)
{
struct tg3_napi *tnapi = dev_id;
struct tg3 *tp = tnapi->tp;
struct tg3_hw_status *sblk = tp->hw_status;
struct tg3_hw_status *sblk = tnapi->hw_status;
if ((sblk->status & SD_STATUS_UPDATED) ||
!(tr32(TG3PCI_PCISTATE) & PCISTATE_INT_NOT_ACTIVE)) {
@ -5762,6 +5761,8 @@ static int tg3_init_rings(struct tg3 *tp)
*/
static void tg3_free_consistent(struct tg3 *tp)
{
struct tg3_napi *tnapi = &tp->napi[0];
kfree(tp->tx_buffers);
tp->tx_buffers = NULL;
if (tp->rx_rcb) {
@ -5774,10 +5775,11 @@ static void tg3_free_consistent(struct tg3 *tp)
tp->tx_ring, tp->tx_desc_mapping);
tp->tx_ring = NULL;
}
if (tp->hw_status) {
if (tnapi->hw_status) {
pci_free_consistent(tp->pdev, TG3_HW_STATUS_SIZE,
tp->hw_status, tp->status_mapping);
tp->hw_status = NULL;
tnapi->hw_status,
tnapi->status_mapping);
tnapi->hw_status = NULL;
}
if (tp->hw_stats) {
pci_free_consistent(tp->pdev, sizeof(struct tg3_hw_stats),
@ -5793,6 +5795,8 @@ static void tg3_free_consistent(struct tg3 *tp)
*/
static int tg3_alloc_consistent(struct tg3 *tp)
{
struct tg3_napi *tnapi = &tp->napi[0];
if (tg3_rx_prodring_init(tp, &tp->prodring[0]))
return -ENOMEM;
@ -5811,19 +5815,20 @@ static int tg3_alloc_consistent(struct tg3 *tp)
if (!tp->tx_ring)
goto err_out;
tp->hw_status = pci_alloc_consistent(tp->pdev,
TG3_HW_STATUS_SIZE,
&tp->status_mapping);
if (!tp->hw_status)
tnapi->hw_status = pci_alloc_consistent(tp->pdev,
TG3_HW_STATUS_SIZE,
&tnapi->status_mapping);
if (!tnapi->hw_status)
goto err_out;
memset(tnapi->hw_status, 0, TG3_HW_STATUS_SIZE);
tp->hw_stats = pci_alloc_consistent(tp->pdev,
sizeof(struct tg3_hw_stats),
&tp->stats_mapping);
if (!tp->hw_stats)
goto err_out;
memset(tp->hw_status, 0, TG3_HW_STATUS_SIZE);
memset(tp->hw_stats, 0, sizeof(struct tg3_hw_stats));
return 0;
@ -5885,6 +5890,7 @@ static int tg3_stop_block(struct tg3 *tp, unsigned long ofs, u32 enable_bit, int
static int tg3_abort_hw(struct tg3 *tp, int silent)
{
int i, err;
struct tg3_napi *tnapi = &tp->napi[0];
tg3_disable_ints(tp);
@ -5936,8 +5942,8 @@ static int tg3_abort_hw(struct tg3 *tp, int silent)
err |= tg3_stop_block(tp, BUFMGR_MODE, BUFMGR_MODE_ENABLE, silent);
err |= tg3_stop_block(tp, MEMARB_MODE, MEMARB_MODE_ENABLE, silent);
if (tp->hw_status)
memset(tp->hw_status, 0, TG3_HW_STATUS_SIZE);
if (tnapi->hw_status)
memset(tnapi->hw_status, 0, TG3_HW_STATUS_SIZE);
if (tp->hw_stats)
memset(tp->hw_stats, 0, sizeof(struct tg3_hw_stats));
@ -6264,12 +6270,12 @@ static int tg3_chip_reset(struct tg3 *tp)
* sharing or irqpoll.
*/
tp->tg3_flags |= TG3_FLAG_CHIP_RESETTING;
if (tp->hw_status) {
tp->hw_status->status = 0;
tp->hw_status->status_tag = 0;
if (tp->napi[0].hw_status) {
tp->napi[0].hw_status->status = 0;
tp->napi[0].hw_status->status_tag = 0;
}
tp->last_tag = 0;
tp->last_irq_tag = 0;
tp->napi[0].last_tag = 0;
tp->napi[0].last_irq_tag = 0;
smp_mb();
synchronize_irq(tp->pdev->irq);
@ -7210,9 +7216,9 @@ static int tg3_reset_hw(struct tg3 *tp, int reset_phy)
/* set status block DMA address */
tw32(HOSTCC_STATUS_BLK_HOST_ADDR + TG3_64BIT_REG_HIGH,
((u64) tp->status_mapping >> 32));
((u64) tp->napi[0].status_mapping >> 32));
tw32(HOSTCC_STATUS_BLK_HOST_ADDR + TG3_64BIT_REG_LOW,
((u64) tp->status_mapping & 0xffffffff));
((u64) tp->napi[0].status_mapping & 0xffffffff));
if (!(tp->tg3_flags2 & TG3_FLG2_5705_PLUS)) {
/* Status/statistics block address. See tg3_timer,
@ -7241,7 +7247,7 @@ static int tg3_reset_hw(struct tg3 *tp, int reset_phy)
tg3_write_mem(tp, i, 0);
udelay(40);
}
memset(tp->hw_status, 0, TG3_HW_STATUS_SIZE);
memset(tp->napi[0].hw_status, 0, TG3_HW_STATUS_SIZE);
if (tp->tg3_flags2 & TG3_FLG2_MII_SERDES) {
tp->tg3_flags2 &= ~TG3_FLG2_PARALLEL_DETECT;
@ -7294,7 +7300,7 @@ static int tg3_reset_hw(struct tg3 *tp, int reset_phy)
tw32_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl);
udelay(100);
tw32_mailbox_f(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW, 0);
tw32_mailbox_f(tp->napi[0].int_mbox, 0);
if (!(tp->tg3_flags2 & TG3_FLG2_5705_PLUS)) {
tw32_f(DMAC_MODE, DMAC_MODE_ENABLE);
@ -7596,7 +7602,7 @@ static void tg3_timer(unsigned long __opaque)
* IRQ status the mailbox/status_block protocol the chip
* uses with the cpu is race prone.
*/
if (tp->hw_status->status & SD_STATUS_UPDATED) {
if (tp->napi[0].hw_status->status & SD_STATUS_UPDATED) {
tw32(GRC_LOCAL_CTRL,
tp->grc_local_ctrl | GRC_LCLCTRL_SETINT);
} else {
@ -7740,7 +7746,7 @@ static int tg3_test_interrupt(struct tg3 *tp)
if (err)
return err;
tp->hw_status->status &= ~SD_STATUS_UPDATED;
tnapi->hw_status->status &= ~SD_STATUS_UPDATED;
tg3_enable_ints(tp);
tw32_f(HOSTCC_MODE, tp->coalesce_mode | HOSTCC_MODE_ENABLE |
@ -7749,8 +7755,7 @@ static int tg3_test_interrupt(struct tg3 *tp)
for (i = 0; i < 5; i++) {
u32 int_mbox, misc_host_ctrl;
int_mbox = tr32_mailbox(MAILBOX_INTERRUPT_0 +
TG3_64BIT_REG_LOW);
int_mbox = tr32_mailbox(tnapi->int_mbox);
misc_host_ctrl = tr32(TG3PCI_MISC_HOST_CTRL);
if ((int_mbox != 0) ||
@ -8027,6 +8032,7 @@ err_out1:
u32 val32, val32_2, val32_3, val32_4, val32_5;
u16 val16;
int i;
struct tg3_hw_status *sblk = tp->napi[0]->hw_status;
pci_read_config_word(tp->pdev, PCI_STATUS, &val16);
pci_read_config_dword(tp->pdev, TG3PCI_PCISTATE, &val32);
@ -8179,14 +8185,15 @@ err_out1:
val32, val32_2, val32_3, val32_4, val32_5);
/* SW status block */
printk("DEBUG: Host status block [%08x:%08x:(%04x:%04x:%04x):(%04x:%04x)]\n",
tp->hw_status->status,
tp->hw_status->status_tag,
tp->hw_status->rx_jumbo_consumer,
tp->hw_status->rx_consumer,
tp->hw_status->rx_mini_consumer,
tp->hw_status->idx[0].rx_producer,
tp->hw_status->idx[0].tx_consumer);
printk(KERN_DEBUG
"Host status block [%08x:%08x:(%04x:%04x:%04x):(%04x:%04x)]\n",
sblk->status,
sblk->status_tag,
sblk->rx_jumbo_consumer,
sblk->rx_consumer,
sblk->rx_mini_consumer,
sblk->idx[0].rx_producer,
sblk->idx[0].tx_consumer);
/* SW statistics block */
printk("DEBUG: Host statistics block [%08x:%08x:%08x:%08x]\n",
@ -9824,8 +9831,12 @@ static int tg3_run_loopback(struct tg3 *tp, int loopback_mode)
dma_addr_t map;
int num_pkts, tx_len, rx_len, i, err;
struct tg3_rx_buffer_desc *desc;
struct tg3_napi *tnapi, *rnapi;
struct tg3_rx_prodring_set *tpr = &tp->prodring[0];
tnapi = &tp->napi[0];
rnapi = &tp->napi[0];
if (loopback_mode == TG3_MAC_LOOPBACK) {
/* HW errata - mac loopback fails in some cases on 5780.
* Normal traffic and PHY loopback are not affected by
@ -9907,7 +9918,7 @@ static int tg3_run_loopback(struct tg3 *tp, int loopback_mode)
udelay(10);
rx_start_idx = tp->hw_status->idx[0].rx_producer;
rx_start_idx = rnapi->hw_status->idx[0].rx_producer;
num_pkts = 0;
@ -9929,8 +9940,8 @@ static int tg3_run_loopback(struct tg3 *tp, int loopback_mode)
udelay(10);
tx_idx = tp->hw_status->idx[0].tx_consumer;
rx_idx = tp->hw_status->idx[0].rx_producer;
tx_idx = tnapi->hw_status->idx[0].tx_consumer;
rx_idx = rnapi->hw_status->idx[0].rx_producer;
if ((tx_idx == tp->tx_prod) &&
(rx_idx == (rx_start_idx + num_pkts)))
break;
@ -13401,6 +13412,7 @@ static int __devinit tg3_init_one(struct pci_dev *pdev,
tp->tx_pending = TG3_DEF_TX_RING_PENDING;
tp->napi[0].tp = tp;
tp->napi[0].int_mbox = MAILBOX_INTERRUPT_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;

12
drivers/net/tg3.h
View file

@ -2492,6 +2492,13 @@ struct tg3_rx_prodring_set {
struct tg3_napi {
struct napi_struct napi ____cacheline_aligned;
struct tg3 *tp;
struct tg3_hw_status *hw_status;
u32 last_tag;
u32 last_irq_tag;
u32 int_mbox;
dma_addr_t status_mapping;
};
struct tg3 {
@ -2546,11 +2553,6 @@ struct tg3 {
struct net_device *dev;
struct pci_dev *pdev;
struct tg3_hw_status *hw_status;
dma_addr_t status_mapping;
u32 last_tag;
u32 last_irq_tag;
u32 msg_enable;
/* begin "tx thread" cacheline section */