1 /* SPDX-License-Identifier: GPL-2.0 */
3  * Copyright (c) 2016-2018, 2020, The Linux Foundation. All rights reserved.
18 #include <soc/qcom/cmd-db.h>
105 	const u8 *magic = header->magic;  in cmd_db_magic_matches()
114 	u16 offset = le16_to_cpu(hdr->header_offset);  in rsc_to_entry_header()
116 	return cmd_db_header->data + offset;  in rsc_to_entry_header()
122 	u16 offset = le16_to_cpu(hdr->data_offset);  in rsc_offset()
123 	u16 loffset = le16_to_cpu(ent->offset);  in rsc_offset()
125 	return cmd_db_header->data + offset + loffset;  in rsc_offset()
129  * cmd_db_ready - Indicates if command DB is available
136 		return -EPROBE_DEFER;  in cmd_db_ready()
138 		return -EINVAL;  in cmd_db_ready()
150 	u8 query[sizeof(ent->id)] __nonstring;  in cmd_db_get_header()
159 		rsc_hdr = &cmd_db_header->header[i];  in cmd_db_get_header()
160 		if (!rsc_hdr->slv_id)  in cmd_db_get_header()
164 		for (j = 0; j < le16_to_cpu(rsc_hdr->cnt); j++, ent++) {  in cmd_db_get_header()
165 			if (memcmp(ent->id, query, sizeof(ent->id)) == 0) {  in cmd_db_get_header()
175 	return -ENODEV;  in cmd_db_get_header()
179  * cmd_db_read_addr() - Query command db for resource id address.
195 	return ret < 0 ? 0 : le32_to_cpu(ent->addr);  in cmd_db_read_addr()
200  * cmd_db_read_aux_data() - Query command db for aux data.
218 		*len = le16_to_cpu(ent->len);  in cmd_db_read_aux_data()
225  * cmd_db_match_resource_addr() - Compare if both Resource addresses are same
235 	 * Each RPMh VRM accelerator resource has 3 or 4 contiguous 4-byte  in cmd_db_match_resource_addr()
249  * cmd_db_read_slave_id - Get the slave ID for a given resource address
265 	addr = le32_to_cpu(ent->addr);  in cmd_db_read_slave_id()
274 	const struct rsc_hdr *rsc;  in cmd_db_debugfs_dump()  local
283 		rsc = &cmd_db_header->header[i];  in cmd_db_debugfs_dump()
284 		if (!rsc->slv_id)  in cmd_db_debugfs_dump()
287 		switch (le16_to_cpu(rsc->slv_id)) {  in cmd_db_debugfs_dump()
302 		version = le16_to_cpu(rsc->version);  in cmd_db_debugfs_dump()
307 		seq_puts(seq, "-------------------------\n");  in cmd_db_debugfs_dump()
309 		ent = rsc_to_entry_header(rsc);  in cmd_db_debugfs_dump()
310 		for (j = 0; j < le16_to_cpu(rsc->cnt); j++, ent++) {  in cmd_db_debugfs_dump()
311 			seq_printf(seq, "0x%05x: %*pEp", le32_to_cpu(ent->addr),  in cmd_db_debugfs_dump()
312 				   (int)strnlen(ent->id, sizeof(ent->id)), ent->id);  in cmd_db_debugfs_dump()
314 			len = le16_to_cpu(ent->len);  in cmd_db_debugfs_dump()
317 					   len, rsc_offset(rsc, ent));  in cmd_db_debugfs_dump()
328 	return single_open(file, cmd_db_debugfs_dump, inode->i_private);  in open_cmd_db_debugfs()
346 	rmem = of_reserved_mem_lookup(pdev->dev.of_node);  in cmd_db_dev_probe()
348 		dev_err(&pdev->dev, "failed to acquire memory region\n");  in cmd_db_dev_probe()
349 		return -EINVAL;  in cmd_db_dev_probe()
352 	cmd_db_header = memremap(rmem->base, rmem->size, MEMREMAP_WC);  in cmd_db_dev_probe()
354 		ret = -ENOMEM;  in cmd_db_dev_probe()
360 		dev_err(&pdev->dev, "Invalid Command DB Magic\n");  in cmd_db_dev_probe()
361 		return -EINVAL;  in cmd_db_dev_probe()
364 	debugfs_create_file("cmd-db", 0400, NULL, NULL, &cmd_db_debugfs_ops);  in cmd_db_dev_probe()
366 	device_set_pm_not_required(&pdev->dev);  in cmd_db_dev_probe()
372 	{ .compatible = "qcom,cmd-db" },
380 		   .name = "cmd-db",