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9#include <common.h>
10#include <blk.h>
11#include <command.h>
12#include <console.h>
13#include <errno.h>
14#include <g_dnl.h>
15#include <malloc.h>
16#include <part.h>
17#include <usb.h>
18#include <usb_mass_storage.h>
19#include <watchdog.h>
20#include <linux/delay.h>
21
22static int ums_read_sector(struct ums *ums_dev,
23 ulong start, lbaint_t blkcnt, void *buf)
24{
25 struct blk_desc *block_dev = &ums_dev->block_dev;
26 lbaint_t blkstart = start + ums_dev->start_sector;
27
28 return blk_dread(block_dev, blkstart, blkcnt, buf);
29}
30
31static int ums_write_sector(struct ums *ums_dev,
32 ulong start, lbaint_t blkcnt, const void *buf)
33{
34 struct blk_desc *block_dev = &ums_dev->block_dev;
35 lbaint_t blkstart = start + ums_dev->start_sector;
36
37 return blk_dwrite(block_dev, blkstart, blkcnt, buf);
38}
39
40static struct ums *ums;
41static int ums_count;
42
43static void ums_fini(void)
44{
45 int i;
46
47 for (i = 0; i < ums_count; i++)
48 free((void *)ums[i].name);
49 free(ums);
50 ums = NULL;
51 ums_count = 0;
52}
53
54#define UMS_NAME_LEN 16
55
56static int ums_init(const char *devtype, const char *devnums_part_str)
57{
58 char *s, *t, *devnum_part_str, *name;
59 struct blk_desc *block_dev;
60 struct disk_partition info;
61 int partnum;
62 int ret = -1;
63 struct ums *ums_new;
64
65 s = strdup(devnums_part_str);
66 if (!s)
67 return -1;
68
69 t = s;
70 ums_count = 0;
71
72 for (;;) {
73 devnum_part_str = strsep(&t, ",");
74 if (!devnum_part_str)
75 break;
76
77 partnum = blk_get_device_part_str(devtype, devnum_part_str,
78 &block_dev, &info, 1);
79
80 if (partnum < 0)
81 goto cleanup;
82
83
84
85
86
87 if (!strchr(devnum_part_str, ':'))
88 partnum = 0;
89
90
91 if (block_dev->blksz != SECTOR_SIZE)
92 goto cleanup;
93
94 ums_new = realloc(ums, (ums_count + 1) * sizeof(*ums));
95 if (!ums_new)
96 goto cleanup;
97 ums = ums_new;
98
99
100 if (partnum == 0) {
101 ums[ums_count].start_sector = 0;
102 ums[ums_count].num_sectors = block_dev->lba;
103 } else {
104 ums[ums_count].start_sector = info.start;
105 ums[ums_count].num_sectors = info.size;
106 }
107
108 ums[ums_count].read_sector = ums_read_sector;
109 ums[ums_count].write_sector = ums_write_sector;
110
111 name = malloc(UMS_NAME_LEN);
112 if (!name)
113 goto cleanup;
114 snprintf(name, UMS_NAME_LEN, "UMS disk %d", ums_count);
115 ums[ums_count].name = name;
116 ums[ums_count].block_dev = *block_dev;
117
118 printf("UMS: LUN %d, dev %s %d, hwpart %d, sector %#x, count %#x\n",
119 ums_count, devtype, ums[ums_count].block_dev.devnum,
120 ums[ums_count].block_dev.hwpart,
121 ums[ums_count].start_sector,
122 ums[ums_count].num_sectors);
123
124 ums_count++;
125 }
126
127 if (ums_count)
128 ret = 0;
129
130cleanup:
131 free(s);
132
133 if (ret < 0)
134 ums_fini();
135
136 return ret;
137}
138
139static int do_usb_mass_storage(struct cmd_tbl *cmdtp, int flag,
140 int argc, char *const argv[])
141{
142 const char *usb_controller;
143 const char *devtype;
144 const char *devnum;
145 unsigned int controller_index;
146 int rc;
147 int cable_ready_timeout __maybe_unused;
148
149 if (argc < 3)
150 return CMD_RET_USAGE;
151
152 usb_controller = argv[1];
153 if (argc >= 4) {
154 devtype = argv[2];
155 devnum = argv[3];
156 } else {
157 devtype = "mmc";
158 devnum = argv[2];
159 }
160
161 rc = ums_init(devtype, devnum);
162 if (rc < 0)
163 return CMD_RET_FAILURE;
164
165 controller_index = (unsigned int)(simple_strtoul(
166 usb_controller, NULL, 0));
167 if (usb_gadget_initialize(controller_index)) {
168 pr_err("Couldn't init USB controller.\n");
169 rc = CMD_RET_FAILURE;
170 goto cleanup_ums_init;
171 }
172
173 rc = fsg_init(ums, ums_count, controller_index);
174 if (rc) {
175 pr_err("fsg_init failed\n");
176 rc = CMD_RET_FAILURE;
177 goto cleanup_board;
178 }
179
180 rc = g_dnl_register("usb_dnl_ums");
181 if (rc) {
182 pr_err("g_dnl_register failed\n");
183 rc = CMD_RET_FAILURE;
184 goto cleanup_board;
185 }
186
187
188 cable_ready_timeout = UMS_CABLE_READY_TIMEOUT;
189
190 if (!g_dnl_board_usb_cable_connected()) {
191
192
193
194
195 puts("Please connect USB cable.\n");
196
197 while (!g_dnl_board_usb_cable_connected()) {
198 if (ctrlc()) {
199 puts("\rCTRL+C - Operation aborted.\n");
200 rc = CMD_RET_SUCCESS;
201 goto cleanup_register;
202 }
203 if (!cable_ready_timeout) {
204 puts("\rUSB cable not detected.\n" \
205 "Command exit.\n");
206 rc = CMD_RET_SUCCESS;
207 goto cleanup_register;
208 }
209
210 printf("\rAuto exit in: %.2d s.", cable_ready_timeout);
211 mdelay(1000);
212 cable_ready_timeout--;
213 }
214 puts("\r\n");
215 }
216
217 while (1) {
218 usb_gadget_handle_interrupts(controller_index);
219
220 rc = fsg_main_thread(NULL);
221 if (rc) {
222
223 if (rc == -EIO)
224 printf("\rCheck USB cable connection\n");
225
226
227 if (rc == -EPIPE)
228 printf("\rCTRL+C - Operation aborted\n");
229
230 rc = CMD_RET_SUCCESS;
231 goto cleanup_register;
232 }
233
234 WATCHDOG_RESET();
235 }
236
237cleanup_register:
238 g_dnl_unregister();
239cleanup_board:
240 usb_gadget_release(controller_index);
241cleanup_ums_init:
242 ums_fini();
243
244 return rc;
245}
246
247U_BOOT_CMD(ums, 4, 1, do_usb_mass_storage,
248 "Use the UMS [USB Mass Storage]",
249 "<USB_controller> [<devtype>] <dev[:part]> e.g. ums 0 mmc 0\n"
250 " devtype defaults to mmc"
251);
252
