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authorJohn Garry <john.garry@huawei.com>2016-04-15 21:36:36 +0800
committerMartin K. Petersen <martin.petersen@oracle.com>2016-04-15 16:53:22 -0400
commit685b6d6e678705bf7ff5b7fdd9a904ec7ae9fbe3 (patch)
tree7caa51aca4622f1859cb1fc94541f605f793b4d7 /drivers/scsi
parent54c4042852a85713a7bdd8436cc63762049fbb39 (diff)
hisi_sas: add device and slot alloc hw methods
Add methods to use HW specific versions of functions to allocate slot and device. HW specific methods are permitted to workaround device id vs IPTT collision issue in v2 hw. Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Hannes Reinicke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/hisi_sas/hisi_sas.h3
-rw-r--r--drivers/scsi/hisi_sas/hisi_sas_main.c11
2 files changed, 12 insertions, 2 deletions
diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h
index 0978016482c1..d7cab724f203 100644
--- a/drivers/scsi/hisi_sas/hisi_sas.h
+++ b/drivers/scsi/hisi_sas/hisi_sas.h
@@ -133,6 +133,9 @@ struct hisi_sas_hw {
int (*hw_init)(struct hisi_hba *hisi_hba);
void (*setup_itct)(struct hisi_hba *hisi_hba,
struct hisi_sas_device *device);
+ int (*slot_index_alloc)(struct hisi_hba *hisi_hba, int *slot_idx,
+ struct domain_device *device);
+ struct hisi_sas_device *(*alloc_dev)(struct domain_device *device);
void (*sl_notify)(struct hisi_hba *hisi_hba, int phy_no);
int (*get_free_slot)(struct hisi_hba *hisi_hba, int *q, int *s);
void (*start_delivery)(struct hisi_hba *hisi_hba);
diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index 097ab4f27a6b..18dd5ea2c721 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -227,7 +227,11 @@ static int hisi_sas_task_prep(struct sas_task *task, struct hisi_hba *hisi_hba,
} else
n_elem = task->num_scatter;
- rc = hisi_sas_slot_index_alloc(hisi_hba, &slot_idx);
+ if (hisi_hba->hw->slot_index_alloc)
+ rc = hisi_hba->hw->slot_index_alloc(hisi_hba, &slot_idx,
+ device);
+ else
+ rc = hisi_sas_slot_index_alloc(hisi_hba, &slot_idx);
if (rc)
goto err_out;
rc = hisi_hba->hw->get_free_slot(hisi_hba, &dlvry_queue,
@@ -417,7 +421,10 @@ static int hisi_sas_dev_found(struct domain_device *device)
struct hisi_sas_device *sas_dev;
struct device *dev = &hisi_hba->pdev->dev;
- sas_dev = hisi_sas_alloc_dev(device);
+ if (hisi_hba->hw->alloc_dev)
+ sas_dev = hisi_hba->hw->alloc_dev(device);
+ else
+ sas_dev = hisi_sas_alloc_dev(device);
if (!sas_dev) {
dev_err(dev, "fail alloc dev: max support %d devices\n",
HISI_SAS_MAX_DEVICES);