1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (c) 2015 Google, Inc
4 * Written by Simon Glass <sjg@chromium.org>
5 * Copyright (c) 2016 Xilinx, Inc
6 * Written by Michal Simek
7 *
8 * Based on ahci-uclass.c
9 */
10
11 #define LOG_CATEGORY UCLASS_SCSI
12
13 #include <blk.h>
14 #include <dm.h>
15 #include <part.h>
16 #include <scsi.h>
17
scsi_exec(struct udevice * dev,struct scsi_cmd * pccb)18 int scsi_exec(struct udevice *dev, struct scsi_cmd *pccb)
19 {
20 struct scsi_ops *ops = scsi_get_ops(dev);
21
22 if (!ops->exec)
23 return -ENOSYS;
24
25 return ops->exec(dev, pccb);
26 }
27
scsi_get_blk_by_uuid(const char * uuid,struct blk_desc ** blk_desc_ptr,struct disk_partition * part_info_ptr)28 int scsi_get_blk_by_uuid(const char *uuid,
29 struct blk_desc **blk_desc_ptr,
30 struct disk_partition *part_info_ptr)
31 {
32 static int is_scsi_scanned;
33 struct blk_desc *blk;
34 int i, ret;
35
36 if (!is_scsi_scanned) {
37 scsi_scan(false /* no verbose */);
38 is_scsi_scanned = 1;
39 }
40
41 for (i = 0; i < blk_find_max_devnum(UCLASS_SCSI) + 1; i++) {
42 ret = blk_get_desc(UCLASS_SCSI, i, &blk);
43 if (ret)
44 continue;
45
46 ret = part_get_info_by_uuid(blk, uuid, part_info_ptr);
47 if (ret > 0) {
48 *blk_desc_ptr = blk;
49 return 0;
50 }
51 }
52
53 return -1;
54 }
55
scsi_bus_reset(struct udevice * dev)56 int scsi_bus_reset(struct udevice *dev)
57 {
58 struct scsi_ops *ops = scsi_get_ops(dev);
59
60 if (!ops->bus_reset)
61 return -ENOSYS;
62
63 return ops->bus_reset(dev);
64 }
65
66 UCLASS_DRIVER(scsi) = {
67 .id = UCLASS_SCSI,
68 .name = "scsi",
69 .per_device_plat_auto = sizeof(struct scsi_plat),
70 };
71