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

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This patch create debugfs file for CQ 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 23:56:44 +08:00 committed by Martin K. Petersen
parent 61a6ebf3f5
commit 971afae7cf
1 changed files with 70 additions and 0 deletions
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70
drivers/scsi/hisi_sas/hisi_sas_main.c
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@ -2630,12 +2630,68 @@ static const struct file_operations hisi_sas_debugfs_port_fops = {
.owner = THIS_MODULE,
};
static int hisi_sas_show_row_32(struct seq_file *s, int index,
int sz, u32 *ptr)
{
int i;
/* completion header size not fixed per HW version */
seq_printf(s, "index %04d:\n\t", index);
for (i = 1; i <= sz / 4; i++, ptr++) {
if (!(i % 4))
seq_puts(s, "\n\t");
}
seq_puts(s, "\n");
return 0;
}
static int hisi_sas_cq_show_slot(struct seq_file *s, int slot, void *cq_ptr)
{
struct hisi_sas_cq *cq = cq_ptr;
struct hisi_hba *hisi_hba = cq->hisi_hba;
void *complete_queue = hisi_hba->debugfs_complete_hdr[cq->id];
void *complete_hdr = complete_queue +
(hisi_hba->hw->complete_hdr_size * slot);
return hisi_sas_show_row_32(s, slot,
hisi_hba->hw->complete_hdr_size,
complete_hdr);
}
static int hisi_sas_debugfs_cq_show(struct seq_file *s, void *p)
{
struct hisi_sas_cq *cq = s->private;
int slot, ret;
for (slot = 0; slot < HISI_SAS_QUEUE_SLOTS; slot++) {
ret = hisi_sas_cq_show_slot(s, slot, cq);
if (ret)
return ret;
}
return 0;
}
static int hisi_sas_debugfs_cq_open(struct inode *inode, struct file *filp)
{
return single_open(filp, hisi_sas_debugfs_cq_show, inode->i_private);
}
static const struct file_operations hisi_sas_debugfs_cq_fops = {
.open = hisi_sas_debugfs_cq_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;
struct dentry *dentry;
char name[256];
int p;
int c;
/* Create dump dir inside device dir */
dump_dentry = debugfs_create_dir("dump", hisi_hba->debugfs_dir);
@ -2661,6 +2717,20 @@ static void hisi_sas_debugfs_create_files(struct hisi_hba *hisi_hba)
goto fail;
}
/* Create CQ dir and files */
dentry = debugfs_create_dir("cq", dump_dentry);
if (!dentry)
goto fail;
for (c = 0; c < hisi_hba->queue_count; c++) {
snprintf(name, 256, "%d", c);
if (!debugfs_create_file(name, 0400, dentry,
&hisi_hba->cq[c],
&hisi_sas_debugfs_cq_fops))
goto fail;
}
return;
fail:
debugfs_remove_recursive(hisi_hba->debugfs_dir);