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scsi: hisi_sas: Add debugfs DQ file and add file operations

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This patch create debugfs file for DQ and add file operations

Signed-off-by: Luo Jiaxing <luojiaxing@huawei.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Luo Jiaxing 2018-12-19 23:56:45 +08:00 committed by Martin K. Petersen
parent 971afae7cf
commit 148e379f60
1 changed files with 52 additions and 0 deletions
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52
drivers/scsi/hisi_sas/hisi_sas_main.c
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@ -2685,6 +2685,43 @@ static const struct file_operations hisi_sas_debugfs_cq_fops = {
.owner = THIS_MODULE,
};
static int hisi_sas_dq_show_slot(struct seq_file *s, int slot, void *dq_ptr)
{
struct hisi_sas_dq *dq = dq_ptr;
struct hisi_hba *hisi_hba = dq->hisi_hba;
void *cmd_queue = hisi_hba->debugfs_cmd_hdr[dq->id];
void *cmd_hdr = cmd_queue +
hisi_hba->hw->complete_hdr_size * slot;
return hisi_sas_show_row_32(s, slot, sizeof(struct hisi_sas_cmd_hdr),
cmd_hdr);
}
static int hisi_sas_debugfs_dq_show(struct seq_file *s, void *p)
{
int slot, ret;
for (slot = 0; slot < HISI_SAS_QUEUE_SLOTS; slot++) {
ret = hisi_sas_dq_show_slot(s, slot, s->private);
if (ret)
return ret;
}
return 0;
}
static int hisi_sas_debugfs_dq_open(struct inode *inode, struct file *filp)
{
return single_open(filp, hisi_sas_debugfs_dq_show, inode->i_private);
}
static const struct file_operations hisi_sas_debugfs_dq_fops = {
.open = hisi_sas_debugfs_dq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.owner = THIS_MODULE,
};
static void hisi_sas_debugfs_create_files(struct hisi_hba *hisi_hba)
{
struct dentry *dump_dentry;
@ -2692,6 +2729,7 @@ static void hisi_sas_debugfs_create_files(struct hisi_hba *hisi_hba)
char name[256];
int p;
int c;
int d;
/* Create dump dir inside device dir */
dump_dentry = debugfs_create_dir("dump", hisi_hba->debugfs_dir);
@ -2731,6 +2769,20 @@ static void hisi_sas_debugfs_create_files(struct hisi_hba *hisi_hba)
goto fail;
}
/* Create DQ dir and files */
dentry = debugfs_create_dir("dq", dump_dentry);
if (!dentry)
goto fail;
for (d = 0; d < hisi_hba->queue_count; d++) {
snprintf(name, 256, "%d", d);
if (!debugfs_create_file(name, 0400, dentry,
&hisi_hba->dq[d],
&hisi_sas_debugfs_dq_fops))
goto fail;
}
return;
fail:
debugfs_remove_recursive(hisi_hba->debugfs_dir);