scsi: hisi_sas: Add debugfs IOST file and add file operations (1afb4b85) · Commits · 戴 / test

drivers/scsi/hisi_sas/hisi_sas_main.c

+51 −0

Original line number	Diff line number	Diff line
		@@ -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);

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