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path: root/drivers/net/ethernet/broadcom/tg3.c
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Diffstat (limited to 'drivers/net/ethernet/broadcom/tg3.c')
-rw-r--r--drivers/net/ethernet/broadcom/tg3.c195
1 files changed, 110 insertions, 85 deletions
diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c
index 161cbbb4814a..bf4074167d6a 100644
--- a/drivers/net/ethernet/broadcom/tg3.c
+++ b/drivers/net/ethernet/broadcom/tg3.c
@@ -89,10 +89,10 @@ static inline void _tg3_flag_clear(enum TG3_FLAGS flag, unsigned long *bits)
#define DRV_MODULE_NAME "tg3"
#define TG3_MAJ_NUM 3
-#define TG3_MIN_NUM 120
+#define TG3_MIN_NUM 121
#define DRV_MODULE_VERSION \
__stringify(TG3_MAJ_NUM) "." __stringify(TG3_MIN_NUM)
-#define DRV_MODULE_RELDATE "August 18, 2011"
+#define DRV_MODULE_RELDATE "November 2, 2011"
#define RESET_KIND_SHUTDOWN 0
#define RESET_KIND_INIT 1
@@ -628,19 +628,23 @@ static void tg3_ape_lock_init(struct tg3 *tp)
regbase = TG3_APE_PER_LOCK_GRANT;
/* Make sure the driver hasn't any stale locks. */
- for (i = 0; i < 8; i++) {
- if (i == TG3_APE_LOCK_GPIO)
- continue;
- tg3_ape_write32(tp, regbase + 4 * i, APE_LOCK_GRANT_DRIVER);
+ for (i = TG3_APE_LOCK_PHY0; i <= TG3_APE_LOCK_GPIO; i++) {
+ switch (i) {
+ case TG3_APE_LOCK_PHY0:
+ case TG3_APE_LOCK_PHY1:
+ case TG3_APE_LOCK_PHY2:
+ case TG3_APE_LOCK_PHY3:
+ bit = APE_LOCK_GRANT_DRIVER;
+ break;
+ default:
+ if (!tp->pci_fn)
+ bit = APE_LOCK_GRANT_DRIVER;
+ else
+ bit = 1 << tp->pci_fn;
+ }
+ tg3_ape_write32(tp, regbase + 4 * i, bit);
}
- /* Clear the correct bit of the GPIO lock too. */
- if (!tp->pci_fn)
- bit = APE_LOCK_GRANT_DRIVER;
- else
- bit = 1 << tp->pci_fn;
-
- tg3_ape_write32(tp, regbase + 4 * TG3_APE_LOCK_GPIO, bit);
}
static int tg3_ape_lock(struct tg3 *tp, int locknum)
@@ -658,6 +662,10 @@ static int tg3_ape_lock(struct tg3 *tp, int locknum)
return 0;
case TG3_APE_LOCK_GRC:
case TG3_APE_LOCK_MEM:
+ if (!tp->pci_fn)
+ bit = APE_LOCK_REQ_DRIVER;
+ else
+ bit = 1 << tp->pci_fn;
break;
default:
return -EINVAL;
@@ -673,11 +681,6 @@ static int tg3_ape_lock(struct tg3 *tp, int locknum)
off = 4 * locknum;
- if (locknum != TG3_APE_LOCK_GPIO || !tp->pci_fn)
- bit = APE_LOCK_REQ_DRIVER;
- else
- bit = 1 << tp->pci_fn;
-
tg3_ape_write32(tp, req + off, bit);
/* Wait for up to 1 millisecond to acquire lock. */
@@ -710,6 +713,10 @@ static void tg3_ape_unlock(struct tg3 *tp, int locknum)
return;
case TG3_APE_LOCK_GRC:
case TG3_APE_LOCK_MEM:
+ if (!tp->pci_fn)
+ bit = APE_LOCK_GRANT_DRIVER;
+ else
+ bit = 1 << tp->pci_fn;
break;
default:
return;
@@ -720,11 +727,6 @@ static void tg3_ape_unlock(struct tg3 *tp, int locknum)
else
gnt = TG3_APE_PER_LOCK_GRANT;
- if (locknum != TG3_APE_LOCK_GPIO || !tp->pci_fn)
- bit = APE_LOCK_GRANT_DRIVER;
- else
- bit = 1 << tp->pci_fn;
-
tg3_ape_write32(tp, gnt + 4 * locknum, bit);
}
@@ -5927,6 +5929,18 @@ static int tg3_poll_work(struct tg3_napi *tnapi, int work_done, int budget)
return work_done;
}
+static inline void tg3_reset_task_schedule(struct tg3 *tp)
+{
+ if (!test_and_set_bit(TG3_FLAG_RESET_TASK_PENDING, tp->tg3_flags))
+ schedule_work(&tp->reset_task);
+}
+
+static inline void tg3_reset_task_cancel(struct tg3 *tp)
+{
+ cancel_work_sync(&tp->reset_task);
+ tg3_flag_clear(tp, RESET_TASK_PENDING);
+}
+
static int tg3_poll_msix(struct napi_struct *napi, int budget)
{
struct tg3_napi *tnapi = container_of(napi, struct tg3_napi, napi);
@@ -5967,7 +5981,7 @@ static int tg3_poll_msix(struct napi_struct *napi, int budget)
tx_recovery:
/* work_done is guaranteed to be less than budget. */
napi_complete(napi);
- schedule_work(&tp->reset_task);
+ tg3_reset_task_schedule(tp);
return work_done;
}
@@ -6002,7 +6016,7 @@ static void tg3_process_error(struct tg3 *tp)
tg3_dump_state(tp);
tg3_flag_set(tp, ERROR_PROCESSED);
- schedule_work(&tp->reset_task);
+ tg3_reset_task_schedule(tp);
}
static int tg3_poll(struct napi_struct *napi, int budget)
@@ -6049,7 +6063,7 @@ static int tg3_poll(struct napi_struct *napi, int budget)
tx_recovery:
/* work_done is guaranteed to be less than budget. */
napi_complete(napi);
- schedule_work(&tp->reset_task);
+ tg3_reset_task_schedule(tp);
return work_done;
}
@@ -6338,11 +6352,11 @@ static void tg3_reset_task(struct work_struct *work)
{
struct tg3 *tp = container_of(work, struct tg3, reset_task);
int err;
- unsigned int restart_timer;
tg3_full_lock(tp, 0);
if (!netif_running(tp->dev)) {
+ tg3_flag_clear(tp, RESET_TASK_PENDING);
tg3_full_unlock(tp);
return;
}
@@ -6355,9 +6369,6 @@ static void tg3_reset_task(struct work_struct *work)
tg3_full_lock(tp, 1);
- restart_timer = tg3_flag(tp, RESTART_TIMER);
- tg3_flag_clear(tp, RESTART_TIMER);
-
if (tg3_flag(tp, TX_RECOVERY_PENDING)) {
tp->write32_tx_mbox = tg3_write32_tx_mbox;
tp->write32_rx_mbox = tg3_write_flush_reg32;
@@ -6372,14 +6383,13 @@ static void tg3_reset_task(struct work_struct *work)
tg3_netif_start(tp);
- if (restart_timer)
- mod_timer(&tp->timer, jiffies + 1);
-
out:
tg3_full_unlock(tp);
if (!err)
tg3_phy_start(tp);
+
+ tg3_flag_clear(tp, RESET_TASK_PENDING);
}
static void tg3_tx_timeout(struct net_device *dev)
@@ -6391,7 +6401,7 @@ static void tg3_tx_timeout(struct net_device *dev)
tg3_dump_state(tp);
}
- schedule_work(&tp->reset_task);
+ tg3_reset_task_schedule(tp);
}
/* Test for DMA buffers crossing any 4GB boundaries: 4G, 8G, etc */
@@ -6442,31 +6452,26 @@ static bool tg3_tx_frag_set(struct tg3_napi *tnapi, u32 *entry, u32 *budget,
hwbug = 1;
if (tg3_flag(tp, 4K_FIFO_LIMIT)) {
+ u32 prvidx = *entry;
u32 tmp_flag = flags & ~TXD_FLAG_END;
- while (len > TG3_TX_BD_DMA_MAX) {
+ while (len > TG3_TX_BD_DMA_MAX && *budget) {
u32 frag_len = TG3_TX_BD_DMA_MAX;
len -= TG3_TX_BD_DMA_MAX;
- if (len) {
- tnapi->tx_buffers[*entry].fragmented = true;
- /* Avoid the 8byte DMA problem */
- if (len <= 8) {
- len += TG3_TX_BD_DMA_MAX / 2;
- frag_len = TG3_TX_BD_DMA_MAX / 2;
- }
- } else
- tmp_flag = flags;
-
- if (*budget) {
- tg3_tx_set_bd(&tnapi->tx_ring[*entry], map,
- frag_len, tmp_flag, mss, vlan);
- (*budget)--;
- *entry = NEXT_TX(*entry);
- } else {
- hwbug = 1;
- break;
+ /* Avoid the 8byte DMA problem */
+ if (len <= 8) {
+ len += TG3_TX_BD_DMA_MAX / 2;
+ frag_len = TG3_TX_BD_DMA_MAX / 2;
}
+ tnapi->tx_buffers[*entry].fragmented = true;
+
+ tg3_tx_set_bd(&tnapi->tx_ring[*entry], map,
+ frag_len, tmp_flag, mss, vlan);
+ *budget -= 1;
+ prvidx = *entry;
+ *entry = NEXT_TX(*entry);
+
map += frag_len;
}
@@ -6474,10 +6479,11 @@ static bool tg3_tx_frag_set(struct tg3_napi *tnapi, u32 *entry, u32 *budget,
if (*budget) {
tg3_tx_set_bd(&tnapi->tx_ring[*entry], map,
len, flags, mss, vlan);
- (*budget)--;
+ *budget -= 1;
*entry = NEXT_TX(*entry);
} else {
hwbug = 1;
+ tnapi->tx_buffers[prvidx].fragmented = false;
}
}
} else {
@@ -6509,7 +6515,7 @@ static void tg3_tx_skb_unmap(struct tg3_napi *tnapi, u32 entry, int last)
txb = &tnapi->tx_buffers[entry];
}
- for (i = 0; i < last; i++) {
+ for (i = 0; i <= last; i++) {
const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
entry = NEXT_TX(entry);
@@ -6559,6 +6565,8 @@ static int tigon3_dma_hwbug_workaround(struct tg3_napi *tnapi,
dev_kfree_skb(new_skb);
ret = -1;
} else {
+ u32 save_entry = *entry;
+
base_flags |= TXD_FLAG_END;
tnapi->tx_buffers[*entry].skb = new_skb;
@@ -6568,7 +6576,7 @@ static int tigon3_dma_hwbug_workaround(struct tg3_napi *tnapi,
if (tg3_tx_frag_set(tnapi, entry, budget, new_addr,
new_skb->len, base_flags,
mss, vlan)) {
- tg3_tx_skb_unmap(tnapi, *entry, 0);
+ tg3_tx_skb_unmap(tnapi, save_entry, -1);
dev_kfree_skb(new_skb);
ret = -1;
}
@@ -6758,11 +6766,10 @@ static netdev_tx_t tg3_start_xmit(struct sk_buff *skb, struct net_device *dev)
if (tg3_tx_frag_set(tnapi, &entry, &budget, mapping, len, base_flags |
((skb_shinfo(skb)->nr_frags == 0) ? TXD_FLAG_END : 0),
- mss, vlan))
+ mss, vlan)) {
would_hit_hwbug = 1;
-
/* Now loop through additional data fragments, and queue them. */
- if (skb_shinfo(skb)->nr_frags > 0) {
+ } else if (skb_shinfo(skb)->nr_frags > 0) {
u32 tmp_mss = mss;
if (!tg3_flag(tp, HW_TSO_1) &&
@@ -6784,11 +6791,14 @@ static netdev_tx_t tg3_start_xmit(struct sk_buff *skb, struct net_device *dev)
if (dma_mapping_error(&tp->pdev->dev, mapping))
goto dma_error;
- if (tg3_tx_frag_set(tnapi, &entry, &budget, mapping,
+ if (!budget ||
+ tg3_tx_frag_set(tnapi, &entry, &budget, mapping,
len, base_flags |
((i == last) ? TXD_FLAG_END : 0),
- tmp_mss, vlan))
+ tmp_mss, vlan)) {
would_hit_hwbug = 1;
+ break;
+ }
}
}
@@ -6828,7 +6838,7 @@ static netdev_tx_t tg3_start_xmit(struct sk_buff *skb, struct net_device *dev)
return NETDEV_TX_OK;
dma_error:
- tg3_tx_skb_unmap(tnapi, tnapi->tx_prod, i);
+ tg3_tx_skb_unmap(tnapi, tnapi->tx_prod, --i);
tnapi->tx_buffers[tnapi->tx_prod].skb = NULL;
drop:
dev_kfree_skb(skb);
@@ -7281,7 +7291,8 @@ static void tg3_free_rings(struct tg3 *tp)
if (!skb)
continue;
- tg3_tx_skb_unmap(tnapi, i, skb_shinfo(skb)->nr_frags);
+ tg3_tx_skb_unmap(tnapi, i,
+ skb_shinfo(skb)->nr_frags - 1);
dev_kfree_skb_any(skb);
}
@@ -9200,7 +9211,7 @@ static void tg3_timer(unsigned long __opaque)
{
struct tg3 *tp = (struct tg3 *) __opaque;
- if (tp->irq_sync)
+ if (tp->irq_sync || tg3_flag(tp, RESET_TASK_PENDING))
goto restart_timer;
spin_lock(&tp->lock);
@@ -9223,10 +9234,9 @@ static void tg3_timer(unsigned long __opaque)
}
if (!(tr32(WDMAC_MODE) & WDMAC_MODE_ENABLE)) {
- tg3_flag_set(tp, RESTART_TIMER);
spin_unlock(&tp->lock);
- schedule_work(&tp->reset_task);
- return;
+ tg3_reset_task_schedule(tp);
+ goto restart_timer;
}
}
@@ -9674,15 +9684,14 @@ static int tg3_open(struct net_device *dev)
struct tg3_napi *tnapi = &tp->napi[i];
err = tg3_request_irq(tp, i);
if (err) {
- for (i--; i >= 0; i--)
+ for (i--; i >= 0; i--) {
+ tnapi = &tp->napi[i];
free_irq(tnapi->irq_vec, tnapi);
- break;
+ }
+ goto err_out2;
}
}
- if (err)
- goto err_out2;
-
tg3_full_lock(tp, 0);
err = tg3_init_hw(tp, 1);
@@ -9783,7 +9792,7 @@ static int tg3_close(struct net_device *dev)
struct tg3 *tp = netdev_priv(dev);
tg3_napi_disable(tp);
- cancel_work_sync(&tp->reset_task);
+ tg3_reset_task_cancel(tp);
netif_tx_stop_all_queues(dev);
@@ -11520,7 +11529,7 @@ static int tg3_run_loopback(struct tg3 *tp, u32 pktsz, bool tso_loopback)
break;
}
- tg3_tx_skb_unmap(tnapi, tnapi->tx_prod - 1, 0);
+ tg3_tx_skb_unmap(tnapi, tnapi->tx_prod - 1, -1);
dev_kfree_skb(skb);
if (tx_idx != tnapi->tx_prod)
@@ -14228,12 +14237,30 @@ static int __devinit tg3_get_invariants(struct tg3 *tp)
val = tr32(MEMARB_MODE);
tw32(MEMARB_MODE, val | MEMARB_MODE_ENABLE);
- if (tg3_flag(tp, PCIX_MODE)) {
- pci_read_config_dword(tp->pdev,
- tp->pcix_cap + PCI_X_STATUS, &val);
- tp->pci_fn = val & 0x7;
- } else {
- tp->pci_fn = PCI_FUNC(tp->pdev->devfn) & 3;
+ tp->pci_fn = PCI_FUNC(tp->pdev->devfn) & 3;
+ if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704 ||
+ tg3_flag(tp, 5780_CLASS)) {
+ if (tg3_flag(tp, PCIX_MODE)) {
+ pci_read_config_dword(tp->pdev,
+ tp->pcix_cap + PCI_X_STATUS,
+ &val);
+ tp->pci_fn = val & 0x7;
+ }
+ } else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717) {
+ tg3_read_mem(tp, NIC_SRAM_CPMU_STATUS, &val);
+ if ((val & NIC_SRAM_CPMUSTAT_SIG_MSK) ==
+ NIC_SRAM_CPMUSTAT_SIG) {
+ tp->pci_fn = val & TG3_CPMU_STATUS_FMSK_5717;
+ tp->pci_fn = tp->pci_fn ? 1 : 0;
+ }
+ } else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719 ||
+ GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5720) {
+ tg3_read_mem(tp, NIC_SRAM_CPMU_STATUS, &val);
+ if ((val & NIC_SRAM_CPMUSTAT_SIG_MSK) ==
+ NIC_SRAM_CPMUSTAT_SIG) {
+ tp->pci_fn = (val & TG3_CPMU_STATUS_FMSK_5719) >>
+ TG3_CPMU_STATUS_FSHFT_5719;
+ }
}
/* Get eeprom hw config before calling tg3_set_power_state().
@@ -15665,7 +15692,7 @@ static void __devexit tg3_remove_one(struct pci_dev *pdev)
if (tp->fw)
release_firmware(tp->fw);
- cancel_work_sync(&tp->reset_task);
+ tg3_reset_task_cancel(tp);
if (tg3_flag(tp, USE_PHYLIB)) {
tg3_phy_fini(tp);
@@ -15699,7 +15726,7 @@ static int tg3_suspend(struct device *device)
if (!netif_running(dev))
return 0;
- flush_work_sync(&tp->reset_task);
+ tg3_reset_task_cancel(tp);
tg3_phy_stop(tp);
tg3_netif_stop(tp);
@@ -15812,12 +15839,10 @@ static pci_ers_result_t tg3_io_error_detected(struct pci_dev *pdev,
tg3_netif_stop(tp);
del_timer_sync(&tp->timer);
- tg3_flag_clear(tp, RESTART_TIMER);
/* Want to make sure that the reset task doesn't run */
- cancel_work_sync(&tp->reset_task);
+ tg3_reset_task_cancel(tp);
tg3_flag_clear(tp, TX_RECOVERY_PENDING);
- tg3_flag_clear(tp, RESTART_TIMER);
netif_device_detach(netdev);