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scsi: aacraid: Add periodic checks to see IOP reset status

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Added function that waits with a timeout for the ctrl to be up and running
after triggering an IOP reset. Also removed 30 sec sleep as it is not
needed.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <david.carroll@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Raghava Aditya Renukunta
2017-05-10 09:39:45 -07:00
committed by Martin K. Petersen
parent 80c7d8a5cf
commit 0e9973ed33
2 changed files with 44 additions and 2 deletions
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45
drivers/scsi/aacraid/src.c
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@@ -694,6 +694,37 @@ static void aac_dump_fw_fib_iop_reset(struct aac_dev *dev)
0, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL);
}
static bool aac_is_ctrl_up_and_running(struct aac_dev *dev)
{
bool ctrl_up = true;
unsigned long status, start;
bool is_up = false;
start = jiffies;
do {
schedule();
status = src_readl(dev, MUnit.OMR);
if (status == 0xffffffff)
status = 0;
if (status & KERNEL_BOOTING) {
start = jiffies;
continue;
}
if (time_after(jiffies, start+HZ*SOFT_RESET_TIME)) {
ctrl_up = false;
break;
}
is_up = status & KERNEL_UP_AND_RUNNING;
} while (!is_up);
return ctrl_up;
}
static void aac_notify_fw_of_iop_reset(struct aac_dev *dev)
{
aac_adapter_sync_cmd(dev, IOP_RESET_ALWAYS, 0, 0, 0, 0, 0, 0, NULL,
@@ -709,8 +740,6 @@ static void aac_send_iop_reset(struct aac_dev *dev)
aac_set_intx_mode(dev);
src_writel(dev, MUnit.IDR, IOP_SRC_RESET_MASK);
msleep(30000);
}
static void aac_send_hardware_soft_reset(struct aac_dev *dev)
@@ -726,6 +755,7 @@ static void aac_send_hardware_soft_reset(struct aac_dev *dev)
static int aac_src_restart_adapter(struct aac_dev *dev, int bled, u8 reset_type)
{
unsigned long status, start;
bool is_ctrl_up;
if (bled < 0)
goto invalid_out;
@@ -745,6 +775,16 @@ static int aac_src_restart_adapter(struct aac_dev *dev, int bled, u8 reset_type)
switch (reset_type) {
case IOP_HWSOFT_RESET:
aac_send_iop_reset(dev);
/*
* Creates a delay or wait till up and running comes thru
*/
is_ctrl_up = aac_is_ctrl_up_and_running(dev);
if (!is_ctrl_up)
dev_err(&dev->pdev->dev, "IOP reset failed\n");
else
goto set_startup;
/*
* Check to see if KERNEL_UP_AND_RUNNING
* Wait for the adapter to be up and running.
@@ -780,6 +820,7 @@ invalid_out:
if (src_readl(dev, MUnit.OMR) & KERNEL_PANIC)
return -ENODEV;
set_startup:
if (startup_timeout < 300)
startup_timeout = 300;