diff options
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/s2io.c | 56 | ||||
| -rw-r--r-- | drivers/net/s2io.h | 12 |
2 files changed, 46 insertions, 22 deletions
diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c index 2ee2a2b4b272..d167bc0ae951 100644 --- a/drivers/net/s2io.c +++ b/drivers/net/s2io.c @@ -130,6 +130,11 @@ static inline int rx_buffer_level(struct s2io_nic * sp, int rxb_size, int ring) return 0; } +static inline int is_s2io_card_up(const struct s2io_nic * sp) +{ + return test_bit(__S2IO_STATE_CARD_UP, &sp->state); +} + /* Ethtool related variables and Macros. */ static char s2io_gstrings[][ETH_GSTRING_LEN] = { "Register test\t(offline)", @@ -2711,6 +2716,12 @@ static int s2io_poll(struct napi_struct *napi, int budget) int i; atomic_inc(&nic->isr_cnt); + + if (!is_s2io_card_up(nic)) { + atomic_dec(&nic->isr_cnt); + return 0; + } + mac_control = &nic->mac_control; config = &nic->config; @@ -2837,12 +2848,6 @@ static void rx_intr_handler(struct ring_info *ring_data) struct RxD3* rxdp3; spin_lock(&nic->rx_lock); - if (atomic_read(&nic->card_state) == CARD_DOWN) { - DBG_PRINT(INTR_DBG, "%s: %s going down for reset\n", - __FUNCTION__, dev->name); - spin_unlock(&nic->rx_lock); - return; - } get_info = ring_data->rx_curr_get_info; get_block = get_info.block_index; @@ -3990,7 +3995,7 @@ static int s2io_xmit(struct sk_buff *skb, struct net_device *dev) } spin_lock_irqsave(&sp->tx_lock, flags); - if (atomic_read(&sp->card_state) == CARD_DOWN) { + if (!is_s2io_card_up(sp)) { DBG_PRINT(TX_DBG, "%s: Card going down for reset\n", dev->name); spin_unlock_irqrestore(&sp->tx_lock, flags); @@ -4184,6 +4189,11 @@ static irqreturn_t s2io_msix_ring_handle(int irq, void *dev_id) atomic_inc(&sp->isr_cnt); + if (!is_s2io_card_up(sp)) { + atomic_dec(&sp->isr_cnt); + return IRQ_HANDLED; + } + rx_intr_handler(ring); s2io_chk_rx_buffers(sp, ring->ring_no); @@ -4197,6 +4207,12 @@ static irqreturn_t s2io_msix_fifo_handle(int irq, void *dev_id) struct s2io_nic *sp = fifo->nic; atomic_inc(&sp->isr_cnt); + + if (!is_s2io_card_up(sp)) { + atomic_dec(&sp->isr_cnt); + return IRQ_HANDLED; + } + tx_intr_handler(fifo); atomic_dec(&sp->isr_cnt); return IRQ_HANDLED; @@ -4305,7 +4321,7 @@ static void s2io_handle_errors(void * dev_id) struct swStat *sw_stat = &sp->mac_control.stats_info->sw_stat; struct xpakStat *stats = &sp->mac_control.stats_info->xpak_stat; - if (unlikely(atomic_read(&sp->card_state) == CARD_DOWN)) + if (!is_s2io_card_up(sp)) return; if (pci_channel_offline(sp->pdev)) @@ -4576,6 +4592,12 @@ static irqreturn_t s2io_isr(int irq, void *dev_id) return IRQ_NONE; atomic_inc(&sp->isr_cnt); + + if (!is_s2io_card_up(sp)) { + atomic_dec(&sp->isr_cnt); + return IRQ_NONE; + } + mac_control = &sp->mac_control; config = &sp->config; @@ -4664,7 +4686,7 @@ static void s2io_updt_stats(struct s2io_nic *sp) u64 val64; int cnt = 0; - if (atomic_read(&sp->card_state) == CARD_UP) { + if (is_s2io_card_up(sp)) { /* Apprx 30us on a 133 MHz bus */ val64 = SET_UPDT_CLICKS(10) | STAT_CFG_ONE_SHOT_EN | STAT_CFG_STAT_EN; @@ -6460,7 +6482,7 @@ static void s2io_set_link(struct work_struct *work) if (!netif_running(dev)) goto out_unlock; - if (test_and_set_bit(0, &(nic->link_state))) { + if (test_and_set_bit(__S2IO_STATE_LINK_TASK, &(nic->state))) { /* The card is being reset, no point doing anything */ goto out_unlock; } @@ -6516,7 +6538,7 @@ static void s2io_set_link(struct work_struct *work) writeq(val64, &bar0->adapter_control); s2io_link(nic, LINK_DOWN); } - clear_bit(0, &(nic->link_state)); + clear_bit(__S2IO_STATE_LINK_TASK, &(nic->state)); out_unlock: rtnl_unlock(); @@ -6825,10 +6847,10 @@ static void do_s2io_card_down(struct s2io_nic * sp, int do_io) del_timer_sync(&sp->alarm_timer); /* If s2io_set_link task is executing, wait till it completes. */ - while (test_and_set_bit(0, &(sp->link_state))) { + while (test_and_set_bit(__S2IO_STATE_LINK_TASK, &(sp->state))) { msleep(50); } - atomic_set(&sp->card_state, CARD_DOWN); + clear_bit(__S2IO_STATE_CARD_UP, &sp->state); /* disable Tx and Rx traffic on the NIC */ if (do_io) @@ -6879,7 +6901,7 @@ static void do_s2io_card_down(struct s2io_nic * sp, int do_io) free_rx_buffers(sp); spin_unlock_irqrestore(&sp->rx_lock, flags); - clear_bit(0, &(sp->link_state)); + clear_bit(__S2IO_STATE_LINK_TASK, &(sp->state)); } static void s2io_card_down(struct s2io_nic * sp) @@ -6972,8 +6994,7 @@ static int s2io_card_up(struct s2io_nic * sp) en_dis_able_nic_intrs(sp, interruptible, ENABLE_INTRS); } - - atomic_set(&sp->card_state, CARD_UP); + set_bit(__S2IO_STATE_CARD_UP, &sp->state); return 0; } @@ -7701,9 +7722,8 @@ s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre) * Initialize the tasklet status and link state flags * and the card state parameter */ - atomic_set(&(sp->card_state), 0); sp->tasklet_status = 0; - sp->link_state = 0; + sp->state = 0; /* Initialize spinlocks */ spin_lock_init(&sp->tx_lock); diff --git a/drivers/net/s2io.h b/drivers/net/s2io.h index c01abc1d89af..33e812ea7d18 100644 --- a/drivers/net/s2io.h +++ b/drivers/net/s2io.h @@ -802,6 +802,13 @@ struct lro { u8 saw_ts; }; +/* These flags represent the devices temporary state */ +enum s2io_device_state_t +{ + __S2IO_STATE_LINK_TASK=0, + __S2IO_STATE_CARD_UP +}; + /* Structure representing one instance of the NIC */ struct s2io_nic { int rxd_mode; @@ -880,10 +887,6 @@ struct s2io_nic { int task_flag; unsigned long long start_time; -#define CARD_DOWN 1 -#define CARD_UP 2 - atomic_t card_state; - volatile unsigned long link_state; struct vlan_group *vlgrp; #define MSIX_FLG 0xA5 struct msix_entry *entries; @@ -906,6 +909,7 @@ struct s2io_nic { unsigned long sending_both; u8 lro; u16 lro_max_aggr_per_sess; + volatile unsigned long state; spinlock_t rx_lock; atomic_t isr_cnt; u64 general_int_mask; |