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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.c128
1 files changed, 110 insertions, 18 deletions
diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c
index 728d42ab2a7..a13463e8a2c 100644
--- a/drivers/net/ethernet/broadcom/tg3.c
+++ b/drivers/net/ethernet/broadcom/tg3.c
@@ -94,10 +94,10 @@ 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 131
+#define TG3_MIN_NUM 132
#define DRV_MODULE_VERSION \
__stringify(TG3_MAJ_NUM) "." __stringify(TG3_MIN_NUM)
-#define DRV_MODULE_RELDATE "April 09, 2013"
+#define DRV_MODULE_RELDATE "May 21, 2013"
#define RESET_KIND_SHUTDOWN 0
#define RESET_KIND_INIT 1
@@ -744,6 +744,9 @@ static int tg3_ape_lock(struct tg3 *tp, int locknum)
status = tg3_ape_read32(tp, gnt + off);
if (status == bit)
break;
+ if (pci_channel_offline(tp->pdev))
+ break;
+
udelay(10);
}
@@ -1635,6 +1638,9 @@ static void tg3_wait_for_event_ack(struct tg3 *tp)
for (i = 0; i < delay_cnt; i++) {
if (!(tr32(GRC_RX_CPU_EVENT) & GRC_RX_CPU_DRIVER_EVENT))
break;
+ if (pci_channel_offline(tp->pdev))
+ break;
+
udelay(8);
}
}
@@ -1800,6 +1806,9 @@ static int tg3_poll_fw(struct tg3 *tp)
int i;
u32 val;
+ if (tg3_flag(tp, NO_FWARE_REPORTED))
+ return 0;
+
if (tg3_flag(tp, IS_SSB_CORE)) {
/* We don't use firmware. */
return 0;
@@ -1810,6 +1819,9 @@ static int tg3_poll_fw(struct tg3 *tp)
for (i = 0; i < 200; i++) {
if (tr32(VCPU_STATUS) & VCPU_STATUS_INIT_DONE)
return 0;
+ if (pci_channel_offline(tp->pdev))
+ return -ENODEV;
+
udelay(100);
}
return -ENODEV;
@@ -1820,6 +1832,15 @@ static int tg3_poll_fw(struct tg3 *tp)
tg3_read_mem(tp, NIC_SRAM_FIRMWARE_MBOX, &val);
if (val == ~NIC_SRAM_FIRMWARE_MBOX_MAGIC1)
break;
+ if (pci_channel_offline(tp->pdev)) {
+ if (!tg3_flag(tp, NO_FWARE_REPORTED)) {
+ tg3_flag_set(tp, NO_FWARE_REPORTED);
+ netdev_info(tp->dev, "No firmware running\n");
+ }
+
+ break;
+ }
+
udelay(10);
}
@@ -2957,6 +2978,31 @@ static int tg3_5700_link_polarity(struct tg3 *tp, u32 speed)
return 0;
}
+static bool tg3_phy_power_bug(struct tg3 *tp)
+{
+ switch (tg3_asic_rev(tp)) {
+ case ASIC_REV_5700:
+ case ASIC_REV_5704:
+ return true;
+ case ASIC_REV_5780:
+ if (tp->phy_flags & TG3_PHYFLG_MII_SERDES)
+ return true;
+ return false;
+ case ASIC_REV_5717:
+ if (!tp->pci_fn)
+ return true;
+ return false;
+ case ASIC_REV_5719:
+ case ASIC_REV_5720:
+ if ((tp->phy_flags & TG3_PHYFLG_PHY_SERDES) &&
+ !tp->pci_fn)
+ return true;
+ return false;
+ }
+
+ return false;
+}
+
static void tg3_power_down_phy(struct tg3 *tp, bool do_low_power)
{
u32 val;
@@ -3016,12 +3062,7 @@ static void tg3_power_down_phy(struct tg3 *tp, bool do_low_power)
/* The PHY should not be powered down on some chips because
* of bugs.
*/
- if (tg3_asic_rev(tp) == ASIC_REV_5700 ||
- tg3_asic_rev(tp) == ASIC_REV_5704 ||
- (tg3_asic_rev(tp) == ASIC_REV_5780 &&
- (tp->phy_flags & TG3_PHYFLG_MII_SERDES)) ||
- (tg3_asic_rev(tp) == ASIC_REV_5717 &&
- !tp->pci_fn))
+ if (tg3_phy_power_bug(tp))
return;
if (tg3_chip_rev(tp) == CHIPREV_5784_AX ||
@@ -3497,6 +3538,8 @@ static int tg3_pause_cpu(struct tg3 *tp, u32 cpu_base)
tw32(cpu_base + CPU_MODE, CPU_MODE_HALT);
if (tr32(cpu_base + CPU_MODE) & CPU_MODE_HALT)
break;
+ if (pci_channel_offline(tp->pdev))
+ return -EBUSY;
}
return (i == iters) ? -EBUSY : 0;
@@ -7428,6 +7471,20 @@ static inline int tg3_4g_overflow_test(dma_addr_t mapping, int len)
return (base > 0xffffdcc0) && (base + len + 8 < base);
}
+/* Test for TSO DMA buffers that cross into regions which are within MSS bytes
+ * of any 4GB boundaries: 4G, 8G, etc
+ */
+static inline int tg3_4g_tso_overflow_test(struct tg3 *tp, dma_addr_t mapping,
+ u32 len, u32 mss)
+{
+ if (tg3_asic_rev(tp) == ASIC_REV_5762 && mss) {
+ u32 base = (u32) mapping & 0xffffffff;
+
+ return ((base + len + (mss & 0x3fff)) < base);
+ }
+ return 0;
+}
+
/* Test for DMA addresses > 40-bit */
static inline int tg3_40bit_overflow_test(struct tg3 *tp, dma_addr_t mapping,
int len)
@@ -7464,6 +7521,9 @@ static bool tg3_tx_frag_set(struct tg3_napi *tnapi, u32 *entry, u32 *budget,
if (tg3_4g_overflow_test(map, len))
hwbug = true;
+ if (tg3_4g_tso_overflow_test(tp, map, len, mss))
+ hwbug = true;
+
if (tg3_40bit_overflow_test(tp, map, len))
hwbug = true;
@@ -8549,6 +8609,14 @@ static int tg3_stop_block(struct tg3 *tp, unsigned long ofs, u32 enable_bit, boo
tw32_f(ofs, val);
for (i = 0; i < MAX_WAIT_CNT; i++) {
+ if (pci_channel_offline(tp->pdev)) {
+ dev_err(&tp->pdev->dev,
+ "tg3_stop_block device offline, "
+ "ofs=%lx enable_bit=%x\n",
+ ofs, enable_bit);
+ return -ENODEV;
+ }
+
udelay(100);
val = tr32(ofs);
if ((val & enable_bit) == 0)
@@ -8572,6 +8640,13 @@ static int tg3_abort_hw(struct tg3 *tp, bool silent)
tg3_disable_ints(tp);
+ if (pci_channel_offline(tp->pdev)) {
+ tp->rx_mode &= ~(RX_MODE_ENABLE | TX_MODE_ENABLE);
+ tp->mac_mode &= ~MAC_MODE_TDE_ENABLE;
+ err = -ENODEV;
+ goto err_no_dev;
+ }
+
tp->rx_mode &= ~RX_MODE_ENABLE;
tw32_f(MAC_RX_MODE, tp->rx_mode);
udelay(10);
@@ -8620,6 +8695,7 @@ static int tg3_abort_hw(struct tg3 *tp, bool silent)
err |= tg3_stop_block(tp, BUFMGR_MODE, BUFMGR_MODE_ENABLE, silent);
err |= tg3_stop_block(tp, MEMARB_MODE, MEMARB_MODE_ENABLE, silent);
+err_no_dev:
for (i = 0; i < tp->irq_cnt; i++) {
struct tg3_napi *tnapi = &tp->napi[i];
if (tnapi->hw_status)
@@ -8874,6 +8950,10 @@ static int tg3_chip_reset(struct tg3 *tp)
tg3_halt_cpu(tp, RX_CPU_BASE);
}
+ err = tg3_poll_fw(tp);
+ if (err)
+ return err;
+
tw32(GRC_MODE, tp->grc_mode);
if (tg3_chip_rev_id(tp) == CHIPREV_ID_5705_A0) {
@@ -8904,10 +8984,6 @@ static int tg3_chip_reset(struct tg3 *tp)
tg3_ape_unlock(tp, TG3_APE_LOCK_GRC);
- err = tg3_poll_fw(tp);
- if (err)
- return err;
-
tg3_mdio_start(tp);
if (tg3_flag(tp, PCI_EXPRESS) &&
@@ -9431,6 +9507,14 @@ static void tg3_rss_write_indir_tbl(struct tg3 *tp)
}
}
+static inline u32 tg3_lso_rd_dma_workaround_bit(struct tg3 *tp)
+{
+ if (tg3_asic_rev(tp) == ASIC_REV_5719)
+ return TG3_LSO_RD_DMA_TX_LENGTH_WA_5719;
+ else
+ return TG3_LSO_RD_DMA_TX_LENGTH_WA_5720;
+}
+
/* tp->lock is held. */
static int tg3_reset_hw(struct tg3 *tp, bool reset_phy)
{
@@ -10116,16 +10200,17 @@ static int tg3_reset_hw(struct tg3 *tp, bool reset_phy)
tw32_f(RDMAC_MODE, rdmac_mode);
udelay(40);
- if (tg3_asic_rev(tp) == ASIC_REV_5719) {
+ if (tg3_asic_rev(tp) == ASIC_REV_5719 ||
+ tg3_asic_rev(tp) == ASIC_REV_5720) {
for (i = 0; i < TG3_NUM_RDMA_CHANNELS; i++) {
if (tr32(TG3_RDMA_LENGTH + (i << 2)) > TG3_MAX_MTU(tp))
break;
}
if (i < TG3_NUM_RDMA_CHANNELS) {
val = tr32(TG3_LSO_RD_DMA_CRPTEN_CTRL);
- val |= TG3_LSO_RD_DMA_TX_LENGTH_WA;
+ val |= tg3_lso_rd_dma_workaround_bit(tp);
tw32(TG3_LSO_RD_DMA_CRPTEN_CTRL, val);
- tg3_flag_set(tp, 5719_RDMA_BUG);
+ tg3_flag_set(tp, 5719_5720_RDMA_BUG);
}
}
@@ -10358,6 +10443,13 @@ static int tg3_reset_hw(struct tg3 *tp, bool reset_phy)
*/
static int tg3_init_hw(struct tg3 *tp, bool reset_phy)
{
+ /* Chip may have been just powered on. If so, the boot code may still
+ * be running initialization. Wait for it to finish to avoid races in
+ * accessing the hardware.
+ */
+ tg3_enable_register_access(tp);
+ tg3_poll_fw(tp);
+
tg3_switch_clocks(tp);
tw32(TG3PCI_MEM_WIN_BASE_ADDR, 0);
@@ -10489,15 +10581,15 @@ static void tg3_periodic_fetch_stats(struct tg3 *tp)
TG3_STAT_ADD32(&sp->tx_ucast_packets, MAC_TX_STATS_UCAST);
TG3_STAT_ADD32(&sp->tx_mcast_packets, MAC_TX_STATS_MCAST);
TG3_STAT_ADD32(&sp->tx_bcast_packets, MAC_TX_STATS_BCAST);
- if (unlikely(tg3_flag(tp, 5719_RDMA_BUG) &&
+ if (unlikely(tg3_flag(tp, 5719_5720_RDMA_BUG) &&
(sp->tx_ucast_packets.low + sp->tx_mcast_packets.low +
sp->tx_bcast_packets.low) > TG3_NUM_RDMA_CHANNELS)) {
u32 val;
val = tr32(TG3_LSO_RD_DMA_CRPTEN_CTRL);
- val &= ~TG3_LSO_RD_DMA_TX_LENGTH_WA;
+ val &= ~tg3_lso_rd_dma_workaround_bit(tp);
tw32(TG3_LSO_RD_DMA_CRPTEN_CTRL, val);
- tg3_flag_clear(tp, 5719_RDMA_BUG);
+ tg3_flag_clear(tp, 5719_5720_RDMA_BUG);
}
TG3_STAT_ADD32(&sp->rx_octets, MAC_RX_STATS_OCTETS);