From: Balsundar P <balsundar.p@microsemi.com>
Date: Tue, 15 Oct 2019 11:52:00 +0530
Subject: scsi: aacraid: fixed firmware assert issue
Git-commit: c02a3342bad32baa9be201da39d3809b74f92239
Patch-mainline: v5.5-rc1
References: jsc#SLE-15152
Before issuing IOP reset, INTX mode is selected. This is triggering MSGU
lockup and ended in basecode assert. Use DROP_IO command when IOP reset is
sent in preparation for interrupt mode switch.
Link: https://lore.kernel.org/r/1571120524-6037-4-git-send-email-balsundar.p@microsemi.com
Signed-off-by: Balsundar P <balsundar.p@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Lee Duncan <lduncan@suse.com>
---
drivers/scsi/aacraid/aacraid.h | 1 +
drivers/scsi/aacraid/comminit.c | 5 +++++
drivers/scsi/aacraid/src.c | 10 ++++++++++
3 files changed, 16 insertions(+)
diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h
index 3fa03230f6ba..3fdd4583cbb5 100644
--- a/drivers/scsi/aacraid/aacraid.h
+++ b/drivers/scsi/aacraid/aacraid.h
@@ -1673,6 +1673,7 @@ struct aac_dev
u8 adapter_shutdown;
u32 handle_pci_error;
bool init_reset;
+ u8 soft_reset_support;
};
#define aac_adapter_interrupt(dev) \
diff --git a/drivers/scsi/aacraid/comminit.c b/drivers/scsi/aacraid/comminit.c
index d4fcfa1e54e0..f75878d773cf 100644
--- a/drivers/scsi/aacraid/comminit.c
+++ b/drivers/scsi/aacraid/comminit.c
@@ -571,6 +571,11 @@ struct aac_dev *aac_init_adapter(struct aac_dev *dev)
else
dev->sa_firmware = 0;
+ if (status[4] & le32_to_cpu(AAC_EXTOPT_SOFT_RESET))
+ dev->soft_reset_support = 1;
+ else
+ dev->soft_reset_support = 0;
+
if ((dev->comm_interface == AAC_COMM_MESSAGE) &&
(status[2] > dev->base_size)) {
aac_adapter_ioremap(dev, 0);
diff --git a/drivers/scsi/aacraid/src.c b/drivers/scsi/aacraid/src.c
index 3b66e06726c8..787ec9baebb0 100644
--- a/drivers/scsi/aacraid/src.c
+++ b/drivers/scsi/aacraid/src.c
@@ -733,10 +733,20 @@ static bool aac_is_ctrl_up_and_running(struct aac_dev *dev)
return ctrl_up;
}
+static void aac_src_drop_io(struct aac_dev *dev)
+{
+ if (!dev->soft_reset_support)
+ return;
+
+ aac_adapter_sync_cmd(dev, DROP_IO,
+ 0, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL);
+}
+
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,
NULL, NULL, NULL, NULL);
+ aac_src_drop_io(dev);
}
static void aac_send_iop_reset(struct aac_dev *dev)