From: Hannes Reinecke <hare@suse.de>
To: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: James Bottomley <james.bottomley@hansenpartnership.com>,
Christoph Hellwig <hch@lst.de>,
John Garry <john.garry@huawei.com>,
linux-scsi@vger.kernel.org, Hannes Reinecke <hare@suse.de>
Subject: [PATCH 29/31] hisi_sas: use task tag to reference the slot
Date: Mon, 22 Feb 2021 14:24:03 +0100 [thread overview]
Message-ID: <20210222132405.91369-30-hare@suse.de> (raw)
In-Reply-To: <20210222132405.91369-1-hare@suse.de>
Use the task task to reference the command slot and drop the
internal slot bitmap.
Signed-off-by: Hannes Reinecke <hare@suse.de>
---
drivers/scsi/hisi_sas/hisi_sas.h | 1 -
drivers/scsi/hisi_sas/hisi_sas_main.c | 78 ++-------------------------
2 files changed, 5 insertions(+), 74 deletions(-)
diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h
index 2401a9575215..6efe980789ee 100644
--- a/drivers/scsi/hisi_sas/hisi_sas.h
+++ b/drivers/scsi/hisi_sas/hisi_sas.h
@@ -419,7 +419,6 @@ struct hisi_hba {
struct workqueue_struct *wq;
int slot_index_count;
- int last_slot_index;
int last_dev_id;
unsigned long *slot_index_tags;
unsigned long reject_stp_links_msk;
diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index af653f4393ea..6402c4e4befa 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -155,62 +155,6 @@ void hisi_sas_stop_phys(struct hisi_hba *hisi_hba)
}
EXPORT_SYMBOL_GPL(hisi_sas_stop_phys);
-static void hisi_sas_slot_index_clear(struct hisi_hba *hisi_hba, int slot_idx)
-{
- void *bitmap = hisi_hba->slot_index_tags;
-
- clear_bit(slot_idx, bitmap);
-}
-
-static void hisi_sas_slot_index_free(struct hisi_hba *hisi_hba, int slot_idx)
-{
- if (hisi_hba->hw->slot_index_alloc ||
- slot_idx >= HISI_SAS_UNRESERVED_IPTT) {
- spin_lock(&hisi_hba->lock);
- hisi_sas_slot_index_clear(hisi_hba, slot_idx);
- spin_unlock(&hisi_hba->lock);
- }
-}
-
-static void hisi_sas_slot_index_set(struct hisi_hba *hisi_hba, int slot_idx)
-{
- void *bitmap = hisi_hba->slot_index_tags;
-
- set_bit(slot_idx, bitmap);
-}
-
-static int hisi_sas_slot_index_alloc(struct hisi_hba *hisi_hba)
-{
- int index;
- void *bitmap = hisi_hba->slot_index_tags;
-
- spin_lock(&hisi_hba->lock);
- index = find_next_zero_bit(bitmap, hisi_hba->slot_index_count,
- hisi_hba->last_slot_index + 1);
- if (index >= hisi_hba->slot_index_count) {
- index = find_next_zero_bit(bitmap,
- hisi_hba->slot_index_count,
- HISI_SAS_UNRESERVED_IPTT);
- if (index >= hisi_hba->slot_index_count) {
- spin_unlock(&hisi_hba->lock);
- return -SAS_QUEUE_FULL;
- }
- }
- hisi_sas_slot_index_set(hisi_hba, index);
- hisi_hba->last_slot_index = index;
- spin_unlock(&hisi_hba->lock);
-
- return index;
-}
-
-static void hisi_sas_slot_index_init(struct hisi_hba *hisi_hba)
-{
- int i;
-
- for (i = 0; i < hisi_hba->slot_index_count; ++i)
- hisi_sas_slot_index_clear(hisi_hba, i);
-}
-
void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, struct sas_task *task,
struct hisi_sas_slot *slot)
{
@@ -246,8 +190,6 @@ void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, struct sas_task *task,
spin_unlock(&sas_dev->lock);
memset(slot, 0, offsetof(struct hisi_sas_slot, buf));
-
- hisi_sas_slot_index_free(hisi_hba, slot->idx);
}
EXPORT_SYMBOL_GPL(hisi_sas_slot_task_free);
@@ -482,10 +424,8 @@ static int hisi_sas_task_prep(struct sas_task *task,
if (hisi_hba->hw->slot_index_alloc)
rc = hisi_hba->hw->slot_index_alloc(hisi_hba, device);
- else if (scmd)
- rc = scmd->request->tag;
else
- rc = hisi_sas_slot_index_alloc(hisi_hba);
+ rc = scmd->request->tag;
if (rc < 0)
goto err_out_dif_dma_unmap;
@@ -1975,9 +1915,10 @@ hisi_sas_internal_abort_task_exec(struct hisi_hba *hisi_hba, int device_id,
port = to_hisi_sas_port(sas_port);
/* simply get a slot and send abort command */
- rc = = task->tag;
- if (rc < 0)
- rc = hisi_sas_slot_index_alloc(hisi_hba);
+ if (hisi_hha->hw->slot_index_alloc)
+ rc = hisi_hba->hw->slot_index_alloc(hisi_hba, device);
+ else
+ rc = = task->tag;
if (rc < 0)
goto err_out;
@@ -2440,12 +2381,6 @@ int hisi_sas_alloc(struct hisi_hba *hisi_hba)
if (!hisi_hba->breakpoint)
goto err_out;
- hisi_hba->slot_index_count = max_command_entries;
- s = hisi_hba->slot_index_count / BITS_PER_BYTE;
- hisi_hba->slot_index_tags = devm_kzalloc(dev, s, GFP_KERNEL);
- if (!hisi_hba->slot_index_tags)
- goto err_out;
-
s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS;
hisi_hba->initial_fis = dmam_alloc_coherent(dev, s,
&hisi_hba->initial_fis_dma,
@@ -2460,9 +2395,6 @@ int hisi_sas_alloc(struct hisi_hba *hisi_hba)
if (!hisi_hba->sata_breakpoint)
goto err_out;
- hisi_sas_slot_index_init(hisi_hba);
- hisi_hba->last_slot_index = HISI_SAS_UNRESERVED_IPTT;
-
hisi_hba->wq = create_singlethread_workqueue(dev_name(dev));
if (!hisi_hba->wq) {
dev_err(dev, "sas_alloc: failed to create workqueue\n");
--
2.29.2
next prev parent reply other threads:[~2021-02-22 13:34 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-22 13:23 [PATCHv7 00/31] scsi: enable reserved commands for LLDDs Hannes Reinecke
2021-02-22 13:23 ` [PATCH 01/31] block: add flag for internal commands Hannes Reinecke
2021-02-22 13:23 ` [PATCH 02/31] scsi: add scsi_{get,put}_internal_cmd() helper Hannes Reinecke
2021-02-24 12:12 ` John Garry
2021-02-22 13:23 ` [PATCH 03/31] fnic: use internal commands Hannes Reinecke
2021-02-22 13:23 ` [PATCH 04/31] fnic: use scsi_host_busy_iter() to traverse commands Hannes Reinecke
2021-02-22 13:23 ` [PATCH 05/31] fnic: check for started requests in fnic_wq_copy_cleanup_handler() Hannes Reinecke
2021-02-22 13:23 ` [PATCH 06/31] scsi: use real inquiry data when initialising devices Hannes Reinecke
2021-02-22 13:23 ` [PATCH 07/31] scsi: Use dummy inquiry data for the host device Hannes Reinecke
2021-02-22 13:23 ` [PATCH 08/31] scsi: revamp host device handling Hannes Reinecke
2021-02-24 13:12 ` John Garry
2021-02-24 14:24 ` Hannes Reinecke
2021-02-24 14:31 ` John Garry
2021-02-24 14:35 ` Hannes Reinecke
2021-02-22 13:23 ` [PATCH 09/31] snic: use reserved commands Hannes Reinecke
2021-02-22 13:23 ` [PATCH 10/31] snic: use tagset iter for traversing commands Hannes Reinecke
2021-02-22 13:23 ` [PATCH 11/31] snic: check for started requests in snic_hba_reset_cmpl_handler() Hannes Reinecke
2021-02-22 13:23 ` [PATCH 12/31] scsi: implement reserved command handling Hannes Reinecke
2021-02-22 13:23 ` [PATCH 13/31] hpsa: move hpsa_hba_inquiry after scsi_add_host() Hannes Reinecke
2021-02-22 13:23 ` [PATCH 14/31] hpsa: use reserved commands Hannes Reinecke
2021-03-11 22:03 ` michael.christie
2021-05-03 9:36 ` Hannes Reinecke
2021-02-22 13:23 ` [PATCH 15/31] hpsa: use scsi_host_busy_iter() to traverse outstanding commands Hannes Reinecke
2021-02-22 13:23 ` [PATCH 16/31] hpsa: drop refcount field from CommandList Hannes Reinecke
2021-02-22 13:23 ` [PATCH 17/31] aacraid: move scsi_add_host() Hannes Reinecke
2021-02-22 13:23 ` [PATCH 18/31] aacraid: store target id in host_scribble Hannes Reinecke
2021-02-22 13:23 ` [PATCH 19/31] aacraid: use scsi_get_internal_cmd() Hannes Reinecke
2021-02-22 13:23 ` [PATCH 20/31] aacraid: use scsi_host_busy_iter() to traverse outstanding commands Hannes Reinecke
2021-02-22 13:23 ` [PATCH 21/31] mv_sas: kill mvsas_debug_issue_ssp_tmf() Hannes Reinecke
2021-02-22 13:23 ` [PATCH 22/31] pm8001: kill pm8001_issue_ssp_tmf() Hannes Reinecke
2021-02-22 13:23 ` [PATCH 23/31] pm8001: kill 'dev' argument from pm8001_exec_internal_task_abort() Hannes Reinecke
2021-02-22 13:23 ` [PATCH 24/31] pm8001: use libsas-provided domain devices for SATA Hannes Reinecke
2021-02-22 13:23 ` [PATCH 25/31] libsas: add SCSI target pointer to struct domain_device Hannes Reinecke
2021-02-22 13:24 ` [PATCH 26/31] scsi: libsas,hisi_sas,mvsas,pm8001: Allocate Scsi_cmd for slow task Hannes Reinecke
2021-03-09 11:22 ` luojiaxing
2021-03-09 14:05 ` John Garry
2021-03-11 8:51 ` luojiaxing
2021-02-22 13:24 ` [PATCH 27/31] libsas: add tag to struct sas_task Hannes Reinecke
2021-02-22 13:24 ` [PATCH 28/31] scsi: hisi_sas: Use libsas slow task SCSI command Hannes Reinecke
2021-02-22 13:24 ` Hannes Reinecke [this message]
2021-03-10 1:54 ` [PATCH 29/31] hisi_sas: use task tag to reference the slot luojiaxing
2021-02-22 13:24 ` [PATCH 30/31] mv_sas: use reserved tags and drop private tag allocation Hannes Reinecke
2021-02-22 13:24 ` [PATCH 31/31] pm8001: use block-layer tags for ccb allocation Hannes Reinecke
2021-02-23 12:31 ` John Garry
2021-02-23 10:16 ` [PATCHv7 00/31] scsi: enable reserved commands for LLDDs John Garry
2021-02-23 17:50 ` John Garry
2021-02-24 6:54 ` Hannes Reinecke
2021-02-24 8:55 ` John Garry
2021-03-06 15:11 ` Don.Brace
2021-03-16 17:57 ` Don.Brace
2021-03-29 21:47 ` Don.Brace
2021-03-11 23:53 ` michael.christie
2021-03-12 16:08 ` Hannes Reinecke
2021-03-17 17:09 ` John Garry
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