Commit 88aef2f5 authored by Netanel Belgazal's avatar Netanel Belgazal Committed by David S. Miller

net: ena: improve ENA driver boot time.

The ena admin commands timeout is in resolutions of 100ms.
Therefore, When the driver works in polling mode, it sleeps for 100ms
each time. The overall boot time of the ENA driver is ~1.5 sec.
To reduce the boot time, This change modifies the granularity of
the sleeps to 5ms.
This change improves the boot time to 220ms.
Signed-off-by: default avatarNetanel Belgazal <netanel@amazon.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent c057c683
...@@ -63,6 +63,8 @@ ...@@ -63,6 +63,8 @@
#define ENA_REGS_ADMIN_INTR_MASK 1 #define ENA_REGS_ADMIN_INTR_MASK 1
#define ENA_POLL_MS 5
/*****************************************************************************/ /*****************************************************************************/
/*****************************************************************************/ /*****************************************************************************/
/*****************************************************************************/ /*****************************************************************************/
...@@ -533,7 +535,7 @@ static int ena_com_wait_and_process_admin_cq_polling(struct ena_comp_ctx *comp_c ...@@ -533,7 +535,7 @@ static int ena_com_wait_and_process_admin_cq_polling(struct ena_comp_ctx *comp_c
goto err; goto err;
} }
msleep(100); msleep(ENA_POLL_MS);
} }
if (unlikely(comp_ctx->status == ENA_CMD_ABORTED)) { if (unlikely(comp_ctx->status == ENA_CMD_ABORTED)) {
...@@ -746,6 +748,9 @@ static int wait_for_reset_state(struct ena_com_dev *ena_dev, u32 timeout, ...@@ -746,6 +748,9 @@ static int wait_for_reset_state(struct ena_com_dev *ena_dev, u32 timeout,
{ {
u32 val, i; u32 val, i;
/* Convert timeout from resolution of 100ms to ENA_POLL_MS */
timeout = (timeout * 100) / ENA_POLL_MS;
for (i = 0; i < timeout; i++) { for (i = 0; i < timeout; i++) {
val = ena_com_reg_bar_read32(ena_dev, ENA_REGS_DEV_STS_OFF); val = ena_com_reg_bar_read32(ena_dev, ENA_REGS_DEV_STS_OFF);
...@@ -758,8 +763,7 @@ static int wait_for_reset_state(struct ena_com_dev *ena_dev, u32 timeout, ...@@ -758,8 +763,7 @@ static int wait_for_reset_state(struct ena_com_dev *ena_dev, u32 timeout,
exp_state) exp_state)
return 0; return 0;
/* The resolution of the timeout is 100ms */ msleep(ENA_POLL_MS);
msleep(100);
} }
return -ETIME; return -ETIME;
...@@ -1253,7 +1257,7 @@ void ena_com_wait_for_abort_completion(struct ena_com_dev *ena_dev) ...@@ -1253,7 +1257,7 @@ void ena_com_wait_for_abort_completion(struct ena_com_dev *ena_dev)
spin_lock_irqsave(&admin_queue->q_lock, flags); spin_lock_irqsave(&admin_queue->q_lock, flags);
while (atomic_read(&admin_queue->outstanding_cmds) != 0) { while (atomic_read(&admin_queue->outstanding_cmds) != 0) {
spin_unlock_irqrestore(&admin_queue->q_lock, flags); spin_unlock_irqrestore(&admin_queue->q_lock, flags);
msleep(20); msleep(ENA_POLL_MS);
spin_lock_irqsave(&admin_queue->q_lock, flags); spin_lock_irqsave(&admin_queue->q_lock, flags);
} }
spin_unlock_irqrestore(&admin_queue->q_lock, flags); spin_unlock_irqrestore(&admin_queue->q_lock, flags);
......
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