Commit 44f1ce7d authored by Raghava Aditya Renukunta's avatar Raghava Aditya Renukunta Committed by Martin K. Petersen

scsi: aacraid: Implement DropIO sync command

IOP_RESET takes a long time to complete. If controller is in a state
where we can bring it back with init struct, send a DropIO sync command
instead.

 - If controller is faulted perform standard IOP_RESET in aac_srcv_init.

 - If controller is not faulted get adapter properties and extended
   properties.

 - Update the sa_firmware variable and determine if DropIO request is
   supported.

 - Issue DropIO request, and get the number of outstanding commands.

 - If all commands are complete with success (CT_OK), consider IOP_RESET
   is complete.

 - If any commands timeout, Perform the IOP_RESET.
Signed-off-by: default avatarPrasad B Munirathnam <prasad.munirathnam@microsemi.com>
Signed-off-by: default avatarRaghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: default avatarDave Carroll <david.carroll@microsemi.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent a8db6140
......@@ -1528,6 +1528,7 @@ struct aac_bus_info_response {
#define AAC_COMM_MESSAGE_TYPE3 5
#define AAC_EXTOPT_SA_FIRMWARE cpu_to_le32(1<<1)
#define AAC_EXTOPT_SOFT_RESET cpu_to_le32(1<<16)
/* MSIX context */
struct aac_msix_ctx {
......@@ -1662,6 +1663,7 @@ struct aac_dev
u8 raw_io_64;
u8 printf_enabled;
u8 in_reset;
u8 in_soft_reset;
u8 msi;
u8 sa_firmware;
int management_fib_count;
......@@ -2504,6 +2506,7 @@ struct aac_hba_info {
#define RCV_TEMP_READINGS 0x00000025
#define GET_COMM_PREFERRED_SETTINGS 0x00000026
#define IOP_RESET_FW_FIB_DUMP 0x00000034
#define DROP_IO 0x00000035
#define IOP_RESET 0x00001000
#define IOP_RESET_ALWAYS 0x00001001
#define RE_INIT_ADAPTER 0x000000ee
......@@ -2539,6 +2542,7 @@ struct aac_hba_info {
#define FLASH_UPD_PENDING 0x00002000
#define FLASH_UPD_SUCCESS 0x00004000
#define FLASH_UPD_FAILED 0x00008000
#define INVALID_OMR 0xffffffff
#define FWUPD_TIMEOUT (5 * 60)
/*
......
......@@ -255,7 +255,8 @@ static int src_sync_cmd(struct aac_dev *dev, u32 command,
*/
src_writel(dev, MUnit.IDR, INBOUNDDOORBELL_0 << SRC_IDR_SHIFT);
if (!dev->sync_mode || command != SEND_SYNCHRONOUS_FIB) {
if ((!dev->sync_mode || command != SEND_SYNCHRONOUS_FIB) &&
!dev->in_soft_reset) {
ok = 0;
start = jiffies;
......@@ -992,6 +993,148 @@ int aac_src_init(struct aac_dev *dev)
return -1;
}
static int aac_src_wait_sync(struct aac_dev *dev, int *status)
{
unsigned long start = jiffies;
unsigned long usecs = 0;
int delay = 5 * HZ;
int rc = 1;
while (time_before(jiffies, start+delay)) {
/*
* Delay 5 microseconds to let Mon960 get info.
*/
udelay(5);
/*
* Mon960 will set doorbell0 bit when it has completed the
* command.
*/
if (aac_src_get_sync_status(dev) & OUTBOUNDDOORBELL_0) {
/*
* Clear: the doorbell.
*/
if (dev->msi_enabled)
aac_src_access_devreg(dev, AAC_CLEAR_SYNC_BIT);
else
src_writel(dev, MUnit.ODR_C,
OUTBOUNDDOORBELL_0 << SRC_ODR_SHIFT);
rc = 0;
break;
}
/*
* Yield the processor in case we are slow
*/
usecs = 1 * USEC_PER_MSEC;
usleep_range(usecs, usecs + 50);
}
/*
* Pull the synch status from Mailbox 0.
*/
if (status && !rc) {
status[0] = readl(&dev->IndexRegs->Mailbox[0]);
status[1] = readl(&dev->IndexRegs->Mailbox[1]);
status[2] = readl(&dev->IndexRegs->Mailbox[2]);
status[3] = readl(&dev->IndexRegs->Mailbox[3]);
status[4] = readl(&dev->IndexRegs->Mailbox[4]);
}
return rc;
}
/**
* aac_src_soft_reset - perform soft reset to speed up
* access
*
* Assumptions: That the controller is in a state where we can
* bring it back to life with an init struct. We can only use
* fast sync commands, as the timeout is 5 seconds.
*
* @dev: device to configure
*
*/
static int aac_src_soft_reset(struct aac_dev *dev)
{
u32 status_omr = src_readl(dev, MUnit.OMR);
u32 status[5];
int rc = 1;
int state = 0;
char *state_str[7] = {
"GET_ADAPTER_PROPERTIES Failed",
"GET_ADAPTER_PROPERTIES timeout",
"SOFT_RESET not supported",
"DROP_IO Failed",
"DROP_IO timeout",
"Check Health failed"
};
if (status_omr == INVALID_OMR)
return 1; // pcie hosed
if (!(status_omr & KERNEL_UP_AND_RUNNING))
return 1; // not up and running
/*
* We go into soft reset mode to allow us to handle response
*/
dev->in_soft_reset = 1;
dev->msi_enabled = status_omr & AAC_INT_MODE_MSIX;
/* Get adapter properties */
rc = aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES, 0, 0, 0,
0, 0, 0, status+0, status+1, status+2, status+3, status+4);
if (rc)
goto out;
state++;
if (aac_src_wait_sync(dev, status)) {
rc = 1;
goto out;
}
state++;
if (!(status[1] & le32_to_cpu(AAC_OPT_EXTENDED) &&
(status[4] & le32_to_cpu(AAC_EXTOPT_SOFT_RESET)))) {
rc = 2;
goto out;
}
if ((status[1] & le32_to_cpu(AAC_OPT_EXTENDED)) &&
(status[4] & le32_to_cpu(AAC_EXTOPT_SA_FIRMWARE)))
dev->sa_firmware = 1;
state++;
rc = aac_adapter_sync_cmd(dev, DROP_IO, 0, 0, 0, 0, 0, 0,
status+0, status+1, status+2, status+3, status+4);
if (rc)
goto out;
state++;
if (aac_src_wait_sync(dev, status)) {
rc = 3;
goto out;
}
if (status[1])
dev_err(&dev->pdev->dev, "%s: %d outstanding I/O pending\n",
__func__, status[1]);
state++;
rc = aac_src_check_health(dev);
out:
dev->in_soft_reset = 0;
dev->msi_enabled = 0;
if (rc)
dev_err(&dev->pdev->dev, "%s: %s status = %d", __func__,
state_str[state], rc);
return rc;
}
/**
* aac_srcv_init - initialize an SRCv card
* @dev: device to configure
......@@ -1021,8 +1164,10 @@ int aac_srcv_init(struct aac_dev *dev)
if (dev->init_reset) {
dev->init_reset = false;
if (!aac_src_restart_adapter(dev, 0, IOP_HWSOFT_RESET))
if (aac_src_soft_reset(dev)) {
aac_src_restart_adapter(dev, 0, IOP_HWSOFT_RESET);
++restart;
}
}
/*
......@@ -1072,13 +1217,16 @@ int aac_srcv_init(struct aac_dev *dev)
printk(KERN_ERR "%s%d: adapter monitor panic.\n", dev->name, instance);
goto error_iounmap;
}
start = jiffies;
/*
* Wait for the adapter to be up and running. Wait up to 3 minutes
*/
while (!((status = src_readl(dev, MUnit.OMR)) &
KERNEL_UP_AND_RUNNING) ||
status == 0xffffffff) {
do {
status = src_readl(dev, MUnit.OMR);
if (status == INVALID_OMR)
status = 0;
if ((restart &&
(status & (KERNEL_PANIC|SELF_TEST_FAILED|MONITOR_PANIC))) ||
time_after(jiffies, start+HZ*startup_timeout)) {
......@@ -1098,7 +1246,8 @@ int aac_srcv_init(struct aac_dev *dev)
++restart;
}
msleep(1);
}
} while (!(status & KERNEL_UP_AND_RUNNING));
if (restart && aac_commit)
aac_commit = 1;
/*
......
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