diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe.h b/drivers/net/ethernet/intel/ixgbe/ixgbe.h index 49531cd18987..3a4373f689eb 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe.h +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe.h @@ -585,6 +585,11 @@ static inline u16 ixgbe_desc_unused(struct ixgbe_ring *ring) return ((ntc > ntu) ? 0 : ring->count) + ntc - ntu - 1; } +static inline void ixgbe_write_tail(struct ixgbe_ring *ring, u32 value) +{ + writel(value, ring->tail); +} + #define IXGBE_RX_DESC(R, i) \ (&(((union ixgbe_adv_rx_desc *)((R)->desc))[i])) #define IXGBE_TX_DESC(R, i) \ @@ -742,6 +747,7 @@ struct ixgbe_adapter { #ifdef IXGBE_FCOE struct ixgbe_fcoe fcoe; #endif /* IXGBE_FCOE */ + u8 __iomem *io_addr; /* Mainly for iounmap use */ u32 wol; u16 bd_number; @@ -798,6 +804,7 @@ enum ixgbe_state_t { __IXGBE_TESTING, __IXGBE_RESETTING, __IXGBE_DOWN, + __IXGBE_REMOVING, __IXGBE_SERVICE_SCHED, __IXGBE_IN_SFP_INIT, __IXGBE_PTP_RUNNING, diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.h b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.h index d259dc76604e..f2e3919750ec 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.h +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.h @@ -124,24 +124,65 @@ s32 ixgbe_reset_pipeline_82599(struct ixgbe_hw *hw); s32 ixgbe_get_thermal_sensor_data_generic(struct ixgbe_hw *hw); s32 ixgbe_init_thermal_sensor_thresh_generic(struct ixgbe_hw *hw); -#define IXGBE_WRITE_REG(a, reg, value) writel((value), ((a)->hw_addr + (reg))) +#define IXGBE_FAILED_READ_REG 0xffffffffU + +static inline bool ixgbe_removed(void __iomem *addr) +{ + return unlikely(!addr); +} + +void ixgbe_check_remove(struct ixgbe_hw *hw, u32 reg); + +static inline void ixgbe_write_reg(struct ixgbe_hw *hw, u32 reg, u32 value) +{ + u8 __iomem *reg_addr = ACCESS_ONCE(hw->hw_addr); + + if (ixgbe_removed(reg_addr)) + return; + writel(value, reg_addr + reg); +} +#define IXGBE_WRITE_REG(a, reg, value) ixgbe_write_reg((a), (reg), (value)) #ifndef writeq -#define writeq(val, addr) writel((u32) (val), addr); \ - writel((u32) (val >> 32), (addr + 4)); +#define writeq writeq +static inline void writeq(u64 val, void __iomem *addr) +{ + writel((u32)val, addr); + writel((u32)(val >> 32), addr + 4); +} #endif -#define IXGBE_WRITE_REG64(a, reg, value) writeq((value), ((a)->hw_addr + (reg))) +static inline void ixgbe_write_reg64(struct ixgbe_hw *hw, u32 reg, u64 value) +{ + u8 __iomem *reg_addr = ACCESS_ONCE(hw->hw_addr); -#define IXGBE_READ_REG(a, reg) readl((a)->hw_addr + (reg)) + if (ixgbe_removed(reg_addr)) + return; + writeq(value, reg_addr + reg); +} +#define IXGBE_WRITE_REG64(a, reg, value) ixgbe_write_reg64((a), (reg), (value)) -#define IXGBE_WRITE_REG_ARRAY(a, reg, offset, value) (\ - writel((value), ((a)->hw_addr + (reg) + ((offset) << 2)))) +static inline u32 ixgbe_read_reg(struct ixgbe_hw *hw, u32 reg) +{ + u8 __iomem *reg_addr = ACCESS_ONCE(hw->hw_addr); + u32 value; -#define IXGBE_READ_REG_ARRAY(a, reg, offset) (\ - readl((a)->hw_addr + (reg) + ((offset) << 2))) + if (ixgbe_removed(reg_addr)) + return IXGBE_FAILED_READ_REG; + value = readl(reg_addr + reg); + if (unlikely(value == IXGBE_FAILED_READ_REG)) + ixgbe_check_remove(hw, reg); + return value; +} +#define IXGBE_READ_REG(a, reg) ixgbe_read_reg((a), (reg)) -#define IXGBE_WRITE_FLUSH(a) IXGBE_READ_REG(a, IXGBE_STATUS) +#define IXGBE_WRITE_REG_ARRAY(a, reg, offset, value) \ + ixgbe_write_reg((a), (reg) + ((offset) << 2), (value)) + +#define IXGBE_READ_REG_ARRAY(a, reg, offset) \ + ixgbe_read_reg((a), (reg) + ((offset) << 2)) + +#define IXGBE_WRITE_FLUSH(a) ixgbe_read_reg((a), IXGBE_STATUS) #define ixgbe_hw_to_netdev(hw) (((struct ixgbe_adapter *)(hw)->back)->netdev) diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c index 4e7c9b098b58..043307024c4a 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c @@ -1342,61 +1342,61 @@ static bool reg_pattern_test(struct ixgbe_adapter *adapter, u64 *data, int reg, static const u32 test_pattern[] = { 0x5A5A5A5A, 0xA5A5A5A5, 0x00000000, 0xFFFFFFFF}; + if (ixgbe_removed(adapter->hw.hw_addr)) { + *data = 1; + return 1; + } for (pat = 0; pat < ARRAY_SIZE(test_pattern); pat++) { - before = readl(adapter->hw.hw_addr + reg); - writel((test_pattern[pat] & write), - (adapter->hw.hw_addr + reg)); - val = readl(adapter->hw.hw_addr + reg); + before = ixgbe_read_reg(&adapter->hw, reg); + ixgbe_write_reg(&adapter->hw, reg, test_pattern[pat] & write); + val = ixgbe_read_reg(&adapter->hw, reg); if (val != (test_pattern[pat] & write & mask)) { e_err(drv, "pattern test reg %04X failed: got " "0x%08X expected 0x%08X\n", reg, val, (test_pattern[pat] & write & mask)); *data = reg; - writel(before, adapter->hw.hw_addr + reg); - return 1; + ixgbe_write_reg(&adapter->hw, reg, before); + return true; } - writel(before, adapter->hw.hw_addr + reg); + ixgbe_write_reg(&adapter->hw, reg, before); } - return 0; + return false; } static bool reg_set_and_check(struct ixgbe_adapter *adapter, u64 *data, int reg, u32 mask, u32 write) { u32 val, before; - before = readl(adapter->hw.hw_addr + reg); - writel((write & mask), (adapter->hw.hw_addr + reg)); - val = readl(adapter->hw.hw_addr + reg); + + if (ixgbe_removed(adapter->hw.hw_addr)) { + *data = 1; + return 1; + } + before = ixgbe_read_reg(&adapter->hw, reg); + ixgbe_write_reg(&adapter->hw, reg, write & mask); + val = ixgbe_read_reg(&adapter->hw, reg); if ((write & mask) != (val & mask)) { e_err(drv, "set/check reg %04X test failed: got 0x%08X " "expected 0x%08X\n", reg, (val & mask), (write & mask)); *data = reg; - writel(before, (adapter->hw.hw_addr + reg)); - return 1; + ixgbe_write_reg(&adapter->hw, reg, before); + return true; } - writel(before, (adapter->hw.hw_addr + reg)); - return 0; + ixgbe_write_reg(&adapter->hw, reg, before); + return false; } -#define REG_PATTERN_TEST(reg, mask, write) \ - do { \ - if (reg_pattern_test(adapter, data, reg, mask, write)) \ - return 1; \ - } while (0) \ - - -#define REG_SET_AND_CHECK(reg, mask, write) \ - do { \ - if (reg_set_and_check(adapter, data, reg, mask, write)) \ - return 1; \ - } while (0) \ - static int ixgbe_reg_test(struct ixgbe_adapter *adapter, u64 *data) { const struct ixgbe_reg_test *test; u32 value, before, after; u32 i, toggle; + if (ixgbe_removed(adapter->hw.hw_addr)) { + e_err(drv, "Adapter removed - register test blocked\n"); + *data = 1; + return 1; + } switch (adapter->hw.mac.type) { case ixgbe_mac_82598EB: toggle = 0x7FFFF3FF; @@ -1419,10 +1419,10 @@ static int ixgbe_reg_test(struct ixgbe_adapter *adapter, u64 *data) * tests. Some bits are read-only, some toggle, and some * are writeable on newer MACs. */ - before = IXGBE_READ_REG(&adapter->hw, IXGBE_STATUS); - value = (IXGBE_READ_REG(&adapter->hw, IXGBE_STATUS) & toggle); - IXGBE_WRITE_REG(&adapter->hw, IXGBE_STATUS, toggle); - after = IXGBE_READ_REG(&adapter->hw, IXGBE_STATUS) & toggle; + before = ixgbe_read_reg(&adapter->hw, IXGBE_STATUS); + value = (ixgbe_read_reg(&adapter->hw, IXGBE_STATUS) & toggle); + ixgbe_write_reg(&adapter->hw, IXGBE_STATUS, toggle); + after = ixgbe_read_reg(&adapter->hw, IXGBE_STATUS) & toggle; if (value != after) { e_err(drv, "failed STATUS register test got: 0x%08X " "expected: 0x%08X\n", after, value); @@ -1430,7 +1430,7 @@ static int ixgbe_reg_test(struct ixgbe_adapter *adapter, u64 *data) return 1; } /* restore previous status */ - IXGBE_WRITE_REG(&adapter->hw, IXGBE_STATUS, before); + ixgbe_write_reg(&adapter->hw, IXGBE_STATUS, before); /* * Perform the remainder of the register test, looping through @@ -1438,38 +1438,47 @@ static int ixgbe_reg_test(struct ixgbe_adapter *adapter, u64 *data) */ while (test->reg) { for (i = 0; i < test->array_len; i++) { + bool b = false; + switch (test->test_type) { case PATTERN_TEST: - REG_PATTERN_TEST(test->reg + (i * 0x40), - test->mask, - test->write); + b = reg_pattern_test(adapter, data, + test->reg + (i * 0x40), + test->mask, + test->write); break; case SET_READ_TEST: - REG_SET_AND_CHECK(test->reg + (i * 0x40), - test->mask, - test->write); + b = reg_set_and_check(adapter, data, + test->reg + (i * 0x40), + test->mask, + test->write); break; case WRITE_NO_TEST: - writel(test->write, - (adapter->hw.hw_addr + test->reg) - + (i * 0x40)); + ixgbe_write_reg(&adapter->hw, + test->reg + (i * 0x40), + test->write); break; case TABLE32_TEST: - REG_PATTERN_TEST(test->reg + (i * 4), - test->mask, - test->write); + b = reg_pattern_test(adapter, data, + test->reg + (i * 4), + test->mask, + test->write); break; case TABLE64_TEST_LO: - REG_PATTERN_TEST(test->reg + (i * 8), - test->mask, - test->write); + b = reg_pattern_test(adapter, data, + test->reg + (i * 8), + test->mask, + test->write); break; case TABLE64_TEST_HI: - REG_PATTERN_TEST((test->reg + 4) + (i * 8), - test->mask, - test->write); + b = reg_pattern_test(adapter, data, + (test->reg + 4) + (i * 8), + test->mask, + test->write); break; } + if (b) + return 1; } test++; } @@ -1954,6 +1963,15 @@ static void ixgbe_diag_test(struct net_device *netdev, struct ixgbe_adapter *adapter = netdev_priv(netdev); bool if_running = netif_running(netdev); + if (ixgbe_removed(adapter->hw.hw_addr)) { + e_err(hw, "Adapter removed - test blocked\n"); + data[0] = 1; + data[1] = 1; + data[2] = 1; + data[3] = 1; + eth_test->flags |= ETH_TEST_FL_FAILED; + return; + } set_bit(__IXGBE_TESTING, &adapter->state); if (eth_test->flags == ETH_TEST_FL_OFFLINE) { struct ixgbe_hw *hw = &adapter->hw; diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index 5bcc870f8367..3ca59d21d0b2 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -278,10 +278,41 @@ static void ixgbe_check_minimum_link(struct ixgbe_adapter *adapter, static void ixgbe_service_event_schedule(struct ixgbe_adapter *adapter) { if (!test_bit(__IXGBE_DOWN, &adapter->state) && + !test_bit(__IXGBE_REMOVING, &adapter->state) && !test_and_set_bit(__IXGBE_SERVICE_SCHED, &adapter->state)) schedule_work(&adapter->service_task); } +static void ixgbe_remove_adapter(struct ixgbe_hw *hw) +{ + struct ixgbe_adapter *adapter = hw->back; + + if (!hw->hw_addr) + return; + hw->hw_addr = NULL; + e_dev_err("Adapter removed\n"); + ixgbe_service_event_schedule(adapter); +} + +void ixgbe_check_remove(struct ixgbe_hw *hw, u32 reg) +{ + u32 value; + + /* The following check not only optimizes a bit by not + * performing a read on the status register when the + * register just read was a status register read that + * returned IXGBE_FAILED_READ_REG. It also blocks any + * potential recursion. + */ + if (reg == IXGBE_STATUS) { + ixgbe_remove_adapter(hw); + return; + } + value = ixgbe_read_reg(hw, IXGBE_STATUS); + if (value == IXGBE_FAILED_READ_REG) + ixgbe_remove_adapter(hw); +} + static void ixgbe_service_event_complete(struct ixgbe_adapter *adapter) { BUG_ON(!test_bit(__IXGBE_SERVICE_SCHED, &adapter->state)); @@ -1314,7 +1345,7 @@ static inline void ixgbe_release_rx_desc(struct ixgbe_ring *rx_ring, u32 val) * such as IA-64). */ wmb(); - writel(val, rx_ring->tail); + ixgbe_write_tail(rx_ring, val); } static bool ixgbe_alloc_mapped_page(struct ixgbe_ring *rx_ring, @@ -2969,7 +3000,7 @@ void ixgbe_configure_tx_ring(struct ixgbe_adapter *adapter, ring->count * sizeof(union ixgbe_adv_tx_desc)); IXGBE_WRITE_REG(hw, IXGBE_TDH(reg_idx), 0); IXGBE_WRITE_REG(hw, IXGBE_TDT(reg_idx), 0); - ring->tail = hw->hw_addr + IXGBE_TDT(reg_idx); + ring->tail = adapter->io_addr + IXGBE_TDT(reg_idx); /* * set WTHRESH to encourage burst writeback, it should not be set @@ -3308,6 +3339,8 @@ static void ixgbe_rx_desc_queue_enable(struct ixgbe_adapter *adapter, u32 rxdctl; u8 reg_idx = ring->reg_idx; + if (ixgbe_removed(hw->hw_addr)) + return; /* RXDCTL.EN will return 0 on 82598 if link is down, so skip it */ if (hw->mac.type == ixgbe_mac_82598EB && !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP)) @@ -3332,6 +3365,8 @@ void ixgbe_disable_rx_queue(struct ixgbe_adapter *adapter, u32 rxdctl; u8 reg_idx = ring->reg_idx; + if (ixgbe_removed(hw->hw_addr)) + return; rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); rxdctl &= ~IXGBE_RXDCTL_ENABLE; @@ -3372,7 +3407,7 @@ void ixgbe_configure_rx_ring(struct ixgbe_adapter *adapter, ring->count * sizeof(union ixgbe_adv_rx_desc)); IXGBE_WRITE_REG(hw, IXGBE_RDH(reg_idx), 0); IXGBE_WRITE_REG(hw, IXGBE_RDT(reg_idx), 0); - ring->tail = hw->hw_addr + IXGBE_RDT(reg_idx); + ring->tail = adapter->io_addr + IXGBE_RDT(reg_idx); ixgbe_configure_srrctl(adapter, ring); ixgbe_configure_rscctl(adapter, ring); @@ -4572,6 +4607,7 @@ static void ixgbe_up_complete(struct ixgbe_adapter *adapter) if (hw->mac.ops.enable_tx_laser) hw->mac.ops.enable_tx_laser(hw); + smp_mb__before_clear_bit(); clear_bit(__IXGBE_DOWN, &adapter->state); ixgbe_napi_enable_all(adapter); @@ -4656,6 +4692,8 @@ void ixgbe_reset(struct ixgbe_adapter *adapter) struct ixgbe_hw *hw = &adapter->hw; int err; + if (ixgbe_removed(hw->hw_addr)) + return; /* lock SFP init bit to prevent race conditions with the watchdog */ while (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state)) usleep_range(1000, 2000); @@ -4783,7 +4821,8 @@ void ixgbe_down(struct ixgbe_adapter *adapter) int i; /* signal that we are down to the interrupt handler */ - set_bit(__IXGBE_DOWN, &adapter->state); + if (test_and_set_bit(__IXGBE_DOWN, &adapter->state)) + return; /* do nothing if already down */ /* disable receives */ rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); @@ -5874,8 +5913,9 @@ static void ixgbe_check_hang_subtask(struct ixgbe_adapter *adapter) u64 eics = 0; int i; - /* If we're down or resetting, just bail */ + /* If we're down, removing or resetting, just bail */ if (test_bit(__IXGBE_DOWN, &adapter->state) || + test_bit(__IXGBE_REMOVING, &adapter->state) || test_bit(__IXGBE_RESETTING, &adapter->state)) return; @@ -6122,8 +6162,9 @@ static void ixgbe_spoof_check(struct ixgbe_adapter *adapter) **/ static void ixgbe_watchdog_subtask(struct ixgbe_adapter *adapter) { - /* if interface is down do nothing */ + /* if interface is down, removing or resetting, do nothing */ if (test_bit(__IXGBE_DOWN, &adapter->state) || + test_bit(__IXGBE_REMOVING, &adapter->state) || test_bit(__IXGBE_RESETTING, &adapter->state)) return; @@ -6341,8 +6382,9 @@ static void ixgbe_reset_subtask(struct ixgbe_adapter *adapter) adapter->flags2 &= ~IXGBE_FLAG2_RESET_REQUESTED; - /* If we're already down or resetting, just bail */ + /* If we're already down, removing or resetting, just bail */ if (test_bit(__IXGBE_DOWN, &adapter->state) || + test_bit(__IXGBE_REMOVING, &adapter->state) || test_bit(__IXGBE_RESETTING, &adapter->state)) return; @@ -6362,6 +6404,15 @@ static void ixgbe_service_task(struct work_struct *work) struct ixgbe_adapter *adapter = container_of(work, struct ixgbe_adapter, service_task); + if (ixgbe_removed(adapter->hw.hw_addr)) { + if (!test_bit(__IXGBE_DOWN, &adapter->state)) { + rtnl_lock(); + ixgbe_down(adapter); + rtnl_unlock(); + } + ixgbe_service_event_complete(adapter); + return; + } ixgbe_reset_subtask(adapter); ixgbe_sfp_detection_subtask(adapter); ixgbe_sfp_link_config_subtask(adapter); @@ -6693,7 +6744,7 @@ static void ixgbe_tx_map(struct ixgbe_ring *tx_ring, tx_ring->next_to_use = i; /* notify HW of packet */ - writel(i, tx_ring->tail); + ixgbe_write_tail(tx_ring, i); return; dma_error: @@ -7874,6 +7925,7 @@ static int ixgbe_probe(struct pci_dev *pdev, const struct pci_device_id *ent) hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); + adapter->io_addr = hw->hw_addr; if (!hw->hw_addr) { err = -EIO; goto err_ioremap; @@ -8182,7 +8234,7 @@ err_register: err_sw_init: ixgbe_disable_sriov(adapter); adapter->flags2 &= ~IXGBE_FLAG2_SEARCH_FOR_SFP; - iounmap(hw->hw_addr); + iounmap(adapter->io_addr); err_ioremap: free_netdev(netdev); err_alloc_etherdev: @@ -8210,7 +8262,7 @@ static void ixgbe_remove(struct pci_dev *pdev) ixgbe_dbg_adapter_exit(adapter); - set_bit(__IXGBE_DOWN, &adapter->state); + set_bit(__IXGBE_REMOVING, &adapter->state); cancel_work_sync(&adapter->service_task); @@ -8249,7 +8301,7 @@ static void ixgbe_remove(struct pci_dev *pdev) kfree(adapter->ixgbe_ieee_ets); #endif - iounmap(adapter->hw.hw_addr); + iounmap(adapter->io_addr); pci_release_selected_regions(pdev, pci_select_bars(pdev, IORESOURCE_MEM)); diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.c index d4a64e665398..cc3101afd29f 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.c @@ -27,8 +27,7 @@ #include #include -#include "ixgbe_type.h" -#include "ixgbe_common.h" +#include "ixgbe.h" #include "ixgbe_mbx.h" /** diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c index 39217e5ff7dc..132557c318f8 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c @@ -29,7 +29,7 @@ #include #include -#include "ixgbe_common.h" +#include "ixgbe.h" #include "ixgbe_phy.h" static void ixgbe_i2c_start(struct ixgbe_hw *hw);