scsi: hisi_sas: Add debugfs DQ file and add file operations (148e379f) · Commits · 戴 / test

drivers/scsi/hisi_sas/hisi_sas_main.c

+52 −0

Original line number	Diff line number	Diff line
		@@ -2685,6 +2685,43 @@ static const struct file_operations hisi_sas_debugfs_cq_fops = {
		.owner = THIS_MODULE,
		};

		static int hisi_sas_dq_show_slot(struct seq_file s, int slot, void dq_ptr)
		{
		struct hisi_sas_dq *dq = dq_ptr;
		struct hisi_hba *hisi_hba = dq->hisi_hba;
		void *cmd_queue = hisi_hba->debugfs_cmd_hdr[dq->id];
		void *cmd_hdr = cmd_queue +
		hisi_hba->hw->complete_hdr_size * slot;

		return hisi_sas_show_row_32(s, slot, sizeof(struct hisi_sas_cmd_hdr),
		cmd_hdr);
		}

		static int hisi_sas_debugfs_dq_show(struct seq_file s, void p)
		{
		int slot, ret;

		for (slot = 0; slot < HISI_SAS_QUEUE_SLOTS; slot++) {
		ret = hisi_sas_dq_show_slot(s, slot, s->private);
		if (ret)
		return ret;
		}
		return 0;
		}

		static int hisi_sas_debugfs_dq_open(struct inode inode, struct file filp)
		{
		return single_open(filp, hisi_sas_debugfs_dq_show, inode->i_private);
		}

		static const struct file_operations hisi_sas_debugfs_dq_fops = {
		.open = hisi_sas_debugfs_dq_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;
		@@ -2692,6 +2729,7 @@ static void hisi_sas_debugfs_create_files(struct hisi_hba *hisi_hba)
		char name[256];
		int p;
		int c;
		int d;

		/* Create dump dir inside device dir */
		dump_dentry = debugfs_create_dir("dump", hisi_hba->debugfs_dir);
		@@ -2731,6 +2769,20 @@ static void hisi_sas_debugfs_create_files(struct hisi_hba *hisi_hba)
		goto fail;
		}

		/* Create DQ dir and files */
		dentry = debugfs_create_dir("dq", dump_dentry);
		if (!dentry)
		goto fail;

		for (d = 0; d < hisi_hba->queue_count; d++) {
		snprintf(name, 256, "%d", d);

		if (!debugfs_create_file(name, 0400, dentry,
		&hisi_hba->dq[d],
		&hisi_sas_debugfs_dq_fops))
		goto fail;
		}

		return;
		fail:
		debugfs_remove_recursive(hisi_hba->debugfs_dir);

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