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

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This patch create debugfs file for IOST 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 23:56:46 +08:00 committed by Martin K. Petersen
parent 148e379f60
commit 1afb4b8524
1 changed files with 51 additions and 0 deletions
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51
drivers/scsi/hisi_sas/hisi_sas_main.c
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@ -2630,6 +2630,24 @@ static const struct file_operations hisi_sas_debugfs_port_fops = {
.owner = THIS_MODULE,
};
static int hisi_sas_show_row_64(struct seq_file *s, int index,
int sz, u64 *ptr)
{
int i;
/* completion header size not fixed per HW version */
seq_printf(s, "index %04d:\n\t", index);
for (i = 1; i <= sz / 8; i++, ptr++) {
seq_printf(s, " 0x%016llx", le64_to_cpu(*ptr));
if (!(i % 2))
seq_puts(s, "\n\t");
}
seq_puts(s, "\n");
return 0;
}
static int hisi_sas_show_row_32(struct seq_file *s, int index,
int sz, u32 *ptr)
{
@ -2722,6 +2740,35 @@ static const struct file_operations hisi_sas_debugfs_dq_fops = {
.owner = THIS_MODULE,
};
static int hisi_sas_debugfs_iost_show(struct seq_file *s, void *p)
{
struct hisi_hba *hisi_hba = s->private;
struct hisi_sas_iost *debugfs_iost = hisi_hba->debugfs_iost;
int i, ret, max_command_entries = hisi_hba->hw->max_command_entries;
for (i = 0; i < max_command_entries; i++, debugfs_iost++) {
ret = hisi_sas_show_row_64(s, i, sizeof(*debugfs_iost),
(u64 *)debugfs_iost);
if (ret)
return ret;
}
return 0;
}
static int hisi_sas_debugfs_iost_open(struct inode *inode, struct file *filp)
{
return single_open(filp, hisi_sas_debugfs_iost_show, inode->i_private);
}
static const struct file_operations hisi_sas_debugfs_iost_fops = {
.open = hisi_sas_debugfs_iost_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;
@ -2783,6 +2830,10 @@ static void hisi_sas_debugfs_create_files(struct hisi_hba *hisi_hba)
goto fail;
}
if (!debugfs_create_file("iost", 0400, dump_dentry, hisi_hba,
&hisi_sas_debugfs_iost_fops))
goto fail;
return;
fail:
debugfs_remove_recursive(hisi_hba->debugfs_dir);