2022-01-25 16:37:18

by John Garry

Subject: [PATCH 10/16] scsi: libsas: Add TMF handler aborted callback

The hisi_sas TMF handler has some special processing when the TMF is
aborted, so add a callback and fill it in for the hisi_sas driver.

Signed-off-by: John Garry <[email protected]>
---
drivers/scsi/hisi_sas/hisi_sas_main.c | 20 ++++++++++++++++++++
drivers/scsi/libsas/sas_scsi_host.c | 2 ++
include/scsi/libsas.h | 1 +
3 files changed, 23 insertions(+)

diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index 4f146aa50423..a2c03cb6414f 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -671,6 +671,25 @@ static struct hisi_sas_device *hisi_sas_alloc_dev(struct domain_device *device)
return sas_dev;
}

+static void hisi_sas_tmf_aborted(struct sas_task *task)
+{
+ struct hisi_sas_slot *slot = task->lldd_task;
+ struct domain_device *device = task->dev;
+ struct hisi_sas_device *sas_dev = device->lldd_dev;
+ struct hisi_hba *hisi_hba = sas_dev->hisi_hba;
+
+ if (slot) {
+ struct hisi_sas_cq *cq =
+ &hisi_hba->cq[slot->dlvry_queue];
+ /*
+ * sync irq to avoid free'ing task
+ * before using task in IO completion
+ */
+ synchronize_irq(cq->irq_no);
+ slot->task = NULL;
+ }
+}
+
#define HISI_SAS_DISK_RECOVER_CNT 3
static int hisi_sas_init_device(struct domain_device *device)
{
@@ -2327,6 +2346,7 @@ static struct sas_domain_function_template hisi_sas_transport_ops = {
.lldd_clear_nexus_ha = hisi_sas_clear_nexus_ha,
.lldd_port_formed = hisi_sas_port_formed,
.lldd_write_gpio = hisi_sas_write_gpio,
+ .lldd_tmf_aborted = hisi_sas_tmf_aborted,
};

void hisi_sas_init_mem(struct hisi_hba *hisi_hba)
diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c
index 79a0a90cb359..956b4387c1b8 100644
--- a/drivers/scsi/libsas/sas_scsi_host.c
+++ b/drivers/scsi/libsas/sas_scsi_host.c
@@ -969,6 +969,8 @@ int sas_execute_tmf(struct domain_device *device, void *parameter,
if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
pr_err("TMF (%d) task timeout for %016llx and not done\n",
tmf->tmf, SAS_ADDR(device->sas_addr));
+ if (i->dft->lldd_tmf_aborted)
+ i->dft->lldd_tmf_aborted(task);
break;
}
pr_warn("TMF (%d) task timeout for %016llx and done\n",
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index 9c2e58cbadc5..1e5ecfb2f36e 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h
@@ -656,6 +656,7 @@ struct sas_domain_function_template {

/* Special TMF callbacks */
void (*lldd_tmf_exec_complete)(struct domain_device *dev);
+ void (*lldd_tmf_aborted)(struct sas_task *task);

/* Port and Adapter management */
int (*lldd_clear_nexus_port)(struct asd_sas_port *);
--
2.26.2

2022-01-27 17:57:47

by Christoph Hellwig

Subject: Re: [PATCH 10/16] scsi: libsas: Add TMF handler aborted callback

On Tue, Jan 25, 2022 at 07:32:46PM +0800, John Garry wrote:
> The hisi_sas TMF handler has some special processing when the TMF is
> aborted, so add a callback and fill it in for the hisi_sas driver.

Looks good,

Reviewed-by: Christoph Hellwig <[email protected]>