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

This patch creates debugfs file for ITCT and adds 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 2019-01-25 22:22:29 +08:00 committed by Martin K. Petersen
parent 5b0eeac4be
commit 5979f33b98
1 changed files with 33 additions and 0 deletions
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33
drivers/scsi/hisi_sas/hisi_sas_main.c
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@ -2769,6 +2769,36 @@ static const struct file_operations hisi_sas_debugfs_iost_fops = {
.owner = THIS_MODULE, .owner = THIS_MODULE,
}; };
static int hisi_sas_debugfs_itct_show(struct seq_file *s, void *p)
{
int i, ret;
struct hisi_hba *hisi_hba = s->private;
struct hisi_sas_itct *debugfs_itct = hisi_hba->debugfs_itct;
__le64 *itct = &debugfs_itct->qw0;
for (i = 0; i < HISI_SAS_MAX_ITCT_ENTRIES; i++, debugfs_itct++) {
ret = hisi_sas_show_row_64(s, i, sizeof(*debugfs_itct),
itct);
if (ret)
return ret;
}
return 0;
}
static int hisi_sas_debugfs_itct_open(struct inode *inode, struct file *filp)
{
return single_open(filp, hisi_sas_debugfs_itct_show, inode->i_private);
}
static const struct file_operations hisi_sas_debugfs_itct_fops = {
.open = hisi_sas_debugfs_itct_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) static void hisi_sas_debugfs_create_files(struct hisi_hba *hisi_hba)
{ {
struct dentry *dump_dentry; struct dentry *dump_dentry;
@ -2815,6 +2845,9 @@ static void hisi_sas_debugfs_create_files(struct hisi_hba *hisi_hba)
debugfs_create_file("iost", 0400, dump_dentry, hisi_hba, debugfs_create_file("iost", 0400, dump_dentry, hisi_hba,
&hisi_sas_debugfs_iost_fops); &hisi_sas_debugfs_iost_fops);
debugfs_create_file("itct", 0400, dump_dentry, hisi_hba,
&hisi_sas_debugfs_itct_fops);
return; return;
} }