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bnx2x: NAPI and interrupts enable/disable 

Fixing the order of enabling and disabling NAPI and the interrupts

Signed-off-by: Yitchak Gertner <gertner@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yitchak Gertner 2008-08-25 15:26:24 -07:00 committed by David S. Miller
parent d101463499
commit 65abd74dd5
1 changed files with 74 additions and 77 deletions
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151
drivers/net/bnx2x_main.c
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@ -6058,6 +6058,44 @@ static int bnx2x_req_irq(struct bnx2x *bp)
return rc;
}
static void bnx2x_napi_enable(struct bnx2x *bp)
{
int i;
for_each_queue(bp, i)
napi_enable(&bnx2x_fp(bp, i, napi));
}
static void bnx2x_napi_disable(struct bnx2x *bp)
{
int i;
for_each_queue(bp, i)
napi_disable(&bnx2x_fp(bp, i, napi));
}
static void bnx2x_netif_start(struct bnx2x *bp)
{
if (atomic_dec_and_test(&bp->intr_sem)) {
if (netif_running(bp->dev)) {
if (bp->state == BNX2X_STATE_OPEN)
netif_wake_queue(bp->dev);
bnx2x_napi_enable(bp);
bnx2x_int_enable(bp);
}
}
}
static void bnx2x_netif_stop(struct bnx2x *bp)
{
bnx2x_int_disable_sync(bp);
if (netif_running(bp->dev)) {
bnx2x_napi_disable(bp);
netif_tx_disable(bp->dev);
bp->dev->trans_start = jiffies; /* prevent tx timeout */
}
}
/*
* Init service functions
*/
@ -6363,8 +6401,7 @@ static int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
/* Enable Rx interrupt handling before sending the ramrod
as it's completed on Rx FP queue */
for_each_queue(bp, i)
napi_enable(&bnx2x_fp(bp, i, napi));
bnx2x_napi_enable(bp);
/* Enable interrupt handling */
atomic_set(&bp->intr_sem, 0);
@ -6431,8 +6468,7 @@ static int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
return 0;
load_netif_stop:
for_each_queue(bp, i)
napi_disable(&bnx2x_fp(bp, i, napi));
bnx2x_napi_disable(bp);
load_rings_free:
/* Free SKBs, SGEs, TPA pool and driver internals */
bnx2x_free_skbs(bp);
@ -6614,11 +6650,9 @@ static int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode)
bp->rx_mode = BNX2X_RX_MODE_NONE;
bnx2x_set_storm_rx_mode(bp);
if (netif_running(bp->dev)) {
netif_tx_disable(bp->dev);
bp->dev->trans_start = jiffies; /* prevent tx timeout */
}
bnx2x_netif_stop(bp);
if (!netif_running(bp->dev))
bnx2x_napi_disable(bp);
del_timer_sync(&bp->timer);
SHMEM_WR(bp, func_mb[BP_FUNC(bp)].drv_pulse_mb,
(DRV_PULSE_ALWAYS_ALIVE | bp->fw_drv_pulse_wr_seq));
@ -6632,9 +6666,7 @@ static int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode)
smp_rmb();
while (BNX2X_HAS_TX_WORK(fp)) {
if (!netif_running(bp->dev))
bnx2x_tx_int(fp, 1000);
bnx2x_tx_int(fp, 1000);
if (!cnt) {
BNX2X_ERR("timeout waiting for queue[%d]\n",
i);
@ -6650,18 +6682,42 @@ static int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode)
smp_rmb();
}
}
/* Give HW time to discard old tx messages */
msleep(1);
for_each_queue(bp, i)
napi_disable(&bnx2x_fp(bp, i, napi));
/* Disable interrupts after Tx and Rx are disabled on stack level */
bnx2x_int_disable_sync(bp);
/* Release IRQs */
bnx2x_free_irq(bp);
if (CHIP_IS_E1(bp)) {
struct mac_configuration_cmd *config =
bnx2x_sp(bp, mcast_config);
bnx2x_set_mac_addr_e1(bp, 0);
for (i = 0; i < config->hdr.length_6b; i++)
CAM_INVALIDATE(config->config_table[i]);
config->hdr.length_6b = i;
if (CHIP_REV_IS_SLOW(bp))
config->hdr.offset = BNX2X_MAX_EMUL_MULTI*(1 + port);
else
config->hdr.offset = BNX2X_MAX_MULTICAST*(1 + port);
config->hdr.client_id = BP_CL_ID(bp);
config->hdr.reserved1 = 0;
bnx2x_sp_post(bp, RAMROD_CMD_ID_ETH_SET_MAC, 0,
U64_HI(bnx2x_sp_mapping(bp, mcast_config)),
U64_LO(bnx2x_sp_mapping(bp, mcast_config)), 0);
} else { /* E1H */
REG_WR(bp, NIG_REG_LLH0_FUNC_EN + port*8, 0);
bnx2x_set_mac_addr_e1h(bp, 0);
for (i = 0; i < MC_HASH_SIZE; i++)
REG_WR(bp, MC_HASH_OFFSET(bp, i), 0);
}
if (unload_mode == UNLOAD_NORMAL)
reset_code = DRV_MSG_CODE_UNLOAD_REQ_WOL_DIS;
@ -6690,37 +6746,6 @@ static int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode)
} else
reset_code = DRV_MSG_CODE_UNLOAD_REQ_WOL_DIS;
if (CHIP_IS_E1(bp)) {
struct mac_configuration_cmd *config =
bnx2x_sp(bp, mcast_config);
bnx2x_set_mac_addr_e1(bp, 0);
for (i = 0; i < config->hdr.length_6b; i++)
CAM_INVALIDATE(config->config_table[i]);
config->hdr.length_6b = i;
if (CHIP_REV_IS_SLOW(bp))
config->hdr.offset = BNX2X_MAX_EMUL_MULTI*(1 + port);
else
config->hdr.offset = BNX2X_MAX_MULTICAST*(1 + port);
config->hdr.client_id = BP_CL_ID(bp);
config->hdr.reserved1 = 0;
bnx2x_sp_post(bp, RAMROD_CMD_ID_ETH_SET_MAC, 0,
U64_HI(bnx2x_sp_mapping(bp, mcast_config)),
U64_LO(bnx2x_sp_mapping(bp, mcast_config)), 0);
} else { /* E1H */
bnx2x_set_mac_addr_e1h(bp, 0);
for (i = 0; i < MC_HASH_SIZE; i++)
REG_WR(bp, MC_HASH_OFFSET(bp, i), 0);
}
if (CHIP_IS_E1H(bp))
REG_WR(bp, NIG_REG_LLH0_FUNC_EN + port*8, 0);
/* Close multi and leading connections
Completions for ramrods are collected in a synchronous way */
for_each_nondefault_queue(bp, i)
@ -8621,34 +8646,6 @@ test_mem_exit:
return rc;
}
static void bnx2x_netif_start(struct bnx2x *bp)
{
int i;
if (atomic_dec_and_test(&bp->intr_sem)) {
if (netif_running(bp->dev)) {
bnx2x_int_enable(bp);
for_each_queue(bp, i)
napi_enable(&bnx2x_fp(bp, i, napi));
if (bp->state == BNX2X_STATE_OPEN)
netif_wake_queue(bp->dev);
}
}
}
static void bnx2x_netif_stop(struct bnx2x *bp)
{
int i;
if (netif_running(bp->dev)) {
netif_tx_disable(bp->dev);
bp->dev->trans_start = jiffies; /* prevent tx timeout */
for_each_queue(bp, i)
napi_disable(&bnx2x_fp(bp, i, napi));
}
bnx2x_int_disable_sync(bp);
}
static void bnx2x_wait_for_link(struct bnx2x *bp, u8 link_up)
{
int cnt = 1000;