scsi: hisi_sas: Add debugfs CQ file and add file operations (971afae7) · Commits · 戴 / test

drivers/scsi/hisi_sas/hisi_sas_main.c

+70 −0

Original line number	Original line	Diff line number	Diff line
	@@ -2630,12 +2630,68 @@ static const struct file_operations hisi_sas_debugfs_port_fops = {
	.owner = THIS_MODULE,		.owner = THIS_MODULE,
	};		};

			static int hisi_sas_show_row_32(struct seq_file *s, int index,
			int sz, u32 *ptr)
			{
			int i;

			/* completion header size not fixed per HW version */
			seq_printf(s, "index %04d:\n\t", index);
			for (i = 1; i <= sz / 4; i++, ptr++) {
			if (!(i % 4))
			seq_puts(s, "\n\t");
			}
			seq_puts(s, "\n");

			return 0;
			}

			static int hisi_sas_cq_show_slot(struct seq_file s, int slot, void cq_ptr)
			{
			struct hisi_sas_cq *cq = cq_ptr;
			struct hisi_hba *hisi_hba = cq->hisi_hba;
			void *complete_queue = hisi_hba->debugfs_complete_hdr[cq->id];
			void *complete_hdr = complete_queue +
			(hisi_hba->hw->complete_hdr_size * slot);

			return hisi_sas_show_row_32(s, slot,
			hisi_hba->hw->complete_hdr_size,
			complete_hdr);
			}

			static int hisi_sas_debugfs_cq_show(struct seq_file s, void p)
			{
			struct hisi_sas_cq *cq = s->private;
			int slot, ret;

			for (slot = 0; slot < HISI_SAS_QUEUE_SLOTS; slot++) {
			ret = hisi_sas_cq_show_slot(s, slot, cq);
			if (ret)
			return ret;
			}
			return 0;
			}

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

			static const struct file_operations hisi_sas_debugfs_cq_fops = {
			.open = hisi_sas_debugfs_cq_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;
	struct dentry *dentry;		struct dentry *dentry;
	char name[256];		char name[256];
	int p;		int p;
			int c;

	/* Create dump dir inside device dir */		/* Create dump dir inside device dir */
	dump_dentry = debugfs_create_dir("dump", hisi_hba->debugfs_dir);		dump_dentry = debugfs_create_dir("dump", hisi_hba->debugfs_dir);
	@@ -2661,6 +2717,20 @@ static void hisi_sas_debugfs_create_files(struct hisi_hba *hisi_hba)
	goto fail;		goto fail;
	}		}

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

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

			if (!debugfs_create_file(name, 0400, dentry,
			&hisi_hba->cq[c],
			&hisi_sas_debugfs_cq_fops))
			goto fail;
			}

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

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