[PATCH v3 1/1] scsi: aacraid: resurrect correct arc ctrl checks for Series-6

Konstantin Khorenko
2019-08-19T16:36:00Z

The patch introduces another wrapper similar to aac_is_src()
which avoids checking for Series 6 devices.

Use this new wrapper in order to revert original arc ctrl checks for
Series-6 controllers which were occasionally changed by commit
395e5df79a95 ("scsi: aacraid: Remove reference to Series-9")

The patch above not only drops Series-9 cards checks but also
changes logic for Series-6 controllers which lead to controller
hungs/resets under high io load.

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1777586

Signed-off-by: Konstantin Khorenko <khorenko@virtuozzo.com>
---
drivers/scsi/aacraid/aacraid.h | 11 +++++++++++
drivers/scsi/aacraid/comminit.c | 5 ++---
drivers/scsi/aacraid/linit.c | 2 +-
3 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h
index 3fa03230f6ba..ddfa78c05728 100644
--- a/drivers/scsi/aacraid/aacraid.h
+++ b/drivers/scsi/aacraid/aacraid.h
@@ -2740,6 +2740,17 @@ static inline int aac_is_src(struct aac_dev *dev)
return 0;
}

+static inline int aac_is_srcv(struct aac_dev *dev)
+{
+ u16 device = dev->pdev->device;
+
+ if (device == PMC_DEVICE_S7 ||
+ device == PMC_DEVICE_S8)
+ return 1;
+
+ return 0;
+}
+
static inline int aac_supports_2T(struct aac_dev *dev)
{
return (dev->adapter_info.options & AAC_OPT_NEW_COMM_64);
diff --git a/drivers/scsi/aacraid/comminit.c b/drivers/scsi/aacraid/comminit.c
index d4fcfa1e54e0..1918e46ae3ec 100644
--- a/drivers/scsi/aacraid/comminit.c
+++ b/drivers/scsi/aacraid/comminit.c
@@ -349,8 +349,7 @@ int aac_send_shutdown(struct aac_dev * dev)
/* FIB should be freed only after getting the response from the F/W */
if (status != -ERESTARTSYS)
aac_fib_free(fibctx);
- if (aac_is_src(dev) &&
- dev->msi_enabled)
+ if (aac_is_srcv(dev) && dev->msi_enabled)
aac_set_intx_mode(dev);
return status;
}
@@ -605,7 +604,7 @@ struct aac_dev *aac_init_adapter(struct aac_dev *dev)
dev->max_fib_size = status[1] & 0xFFE0;
host->sg_tablesize = status[2] >> 16;
dev->sg_tablesize = status[2] & 0xFFFF;
- if (aac_is_src(dev)) {
+ if (aac_is_srcv(dev)) {
if (host->can_queue > (status[3] >> 16) -
AAC_NUM_MGT_FIB)
host->can_queue = (status[3] >> 16) -
diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c
index 644f7f5c61a2..c8badc9d9ae7 100644
--- a/drivers/scsi/aacraid/linit.c
+++ b/drivers/scsi/aacraid/linit.c
@@ -1835,7 +1835,7 @@ static int aac_acquire_resources(struct aac_dev *dev)
aac_adapter_enable_int(dev);

- if (aac_is_src(dev))
+ if (aac_is_srcv(dev))
aac_define_int_mode(dev);

if (dev->msi_enabled)
--
2.15.1