scsi: hisi_sas: Add debugfs for port registers

[linux-2.6-microblaze.git] / drivers / scsi / hisi_sas / hisi_sas_main.c

diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index fd85934..fbd9b4a 100644 (file)
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -2604,9 +2604,38 @@ static const struct file_operations hisi_sas_debugfs_global_fops = {
        .owner = THIS_MODULE,
 };
 
+static int hisi_sas_debugfs_port_show(struct seq_file *s, void *p)
+{
+       struct hisi_sas_phy *phy = s->private;
+       struct hisi_hba *hisi_hba = phy->hisi_hba;
+       const struct hisi_sas_hw *hw = hisi_hba->hw;
+       const struct hisi_sas_debugfs_reg *reg_port = hw->debugfs_reg_port;
+       u32 *databuf = hisi_hba->debugfs_port_reg[phy->sas_phy.id];
+
+       hisi_sas_debugfs_print_reg(databuf, reg_port, s);
+
+       return 0;
+}
+
+static int hisi_sas_debugfs_port_open(struct inode *inode, struct file *filp)
+{
+       return single_open(filp, hisi_sas_debugfs_port_show, inode->i_private);
+}
+
+static const struct file_operations hisi_sas_debugfs_port_fops = {
+       .open = hisi_sas_debugfs_port_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;
 
        /* Create dump dir inside device dir */
        dump_dentry = debugfs_create_dir("dump", hisi_hba->debugfs_dir);
@@ -2618,6 +2647,20 @@ static void hisi_sas_debugfs_create_files(struct hisi_hba *hisi_hba)
        if (!debugfs_create_file("global", 0400, dump_dentry, hisi_hba,
                                 &hisi_sas_debugfs_global_fops))
                goto fail;
+
+       /* Create port dir and files */
+       dentry = debugfs_create_dir("port", dump_dentry);
+       if (!dentry)
+               goto fail;
+
+       for (p = 0; p < hisi_hba->n_phy; p++) {
+               snprintf(name, 256, "%d", p);
+               if (!debugfs_create_file(name, 0400, dentry,
+                                        &hisi_hba->phy[p],
+                                        &hisi_sas_debugfs_port_fops))
+                       goto fail;
+       }
+
        return;
 fail:
        debugfs_remove_recursive(hisi_hba->debugfs_dir);