diff options
Diffstat (limited to 'rbutil/jztool/src/usb.c')
-rw-r--r-- | rbutil/jztool/src/usb.c | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/rbutil/jztool/src/usb.c b/rbutil/jztool/src/usb.c new file mode 100644 index 0000000000..7e4a5f3388 --- /dev/null +++ b/rbutil/jztool/src/usb.c | |||
@@ -0,0 +1,203 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2021 Aidan MacDonald | ||
11 | * | ||
12 | * This program is free software; you can redistribute it and/or | ||
13 | * modify it under the terms of the GNU General Public License | ||
14 | * as published by the Free Software Foundation; either version 2 | ||
15 | * of the License, or (at your option) any later version. | ||
16 | * | ||
17 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
18 | * KIND, either express or implied. | ||
19 | * | ||
20 | ****************************************************************************/ | ||
21 | |||
22 | #include "jztool_private.h" | ||
23 | #include <stdlib.h> | ||
24 | #include <stdbool.h> | ||
25 | |||
26 | #define VR_GET_CPU_INFO 0 | ||
27 | #define VR_SET_DATA_ADDRESS 1 | ||
28 | #define VR_SET_DATA_LENGTH 2 | ||
29 | #define VR_FLUSH_CACHES 3 | ||
30 | #define VR_PROGRAM_START1 4 | ||
31 | #define VR_PROGRAM_START2 5 | ||
32 | |||
33 | int jz_usb_open(jz_context* jz, jz_usbdev** devptr, uint16_t vend_id, uint16_t prod_id) | ||
34 | { | ||
35 | int rc; | ||
36 | jz_usbdev* dev = NULL; | ||
37 | libusb_device_handle* usb_handle = NULL; | ||
38 | libusb_device** dev_list = NULL; | ||
39 | ssize_t dev_index = -1, dev_count; | ||
40 | |||
41 | rc = jz_context_ref_libusb(jz); | ||
42 | if(rc < 0) | ||
43 | return rc; | ||
44 | |||
45 | dev = malloc(sizeof(struct jz_usbdev)); | ||
46 | if(!dev) { | ||
47 | rc = JZ_ERR_OUT_OF_MEMORY; | ||
48 | goto error; | ||
49 | } | ||
50 | |||
51 | dev_count = libusb_get_device_list(jz->usb_ctx, &dev_list); | ||
52 | if(dev_count < 0) { | ||
53 | jz_log(jz, JZ_LOG_ERROR, "libusb_get_device_list: %s", libusb_strerror(dev_count)); | ||
54 | rc = JZ_ERR_USB; | ||
55 | goto error; | ||
56 | } | ||
57 | |||
58 | for(ssize_t i = 0; i < dev_count; ++i) { | ||
59 | struct libusb_device_descriptor desc; | ||
60 | rc = libusb_get_device_descriptor(dev_list[i], &desc); | ||
61 | if(rc < 0) { | ||
62 | jz_log(jz, JZ_LOG_WARNING, "libusb_get_device_descriptor: %s", | ||
63 | libusb_strerror(rc)); | ||
64 | continue; | ||
65 | } | ||
66 | |||
67 | if(desc.idVendor != vend_id || desc.idProduct != prod_id) | ||
68 | continue; | ||
69 | |||
70 | if(dev_index >= 0) { | ||
71 | /* not the best, but it is the safest thing */ | ||
72 | jz_log(jz, JZ_LOG_ERROR, "Multiple devices match ID %04x:%04x", | ||
73 | (unsigned int)vend_id, (unsigned int)prod_id); | ||
74 | jz_log(jz, JZ_LOG_ERROR, "Please ensure only one player is plugged in, and try again"); | ||
75 | rc = JZ_ERR_NO_DEVICE; | ||
76 | goto error; | ||
77 | } | ||
78 | |||
79 | dev_index = i; | ||
80 | } | ||
81 | |||
82 | if(dev_index < 0) { | ||
83 | jz_log(jz, JZ_LOG_ERROR, "No device with ID %04x:%05x found", | ||
84 | (unsigned int)vend_id, (unsigned int)prod_id); | ||
85 | rc = JZ_ERR_NO_DEVICE; | ||
86 | goto error; | ||
87 | } | ||
88 | |||
89 | rc = libusb_open(dev_list[dev_index], &usb_handle); | ||
90 | if(rc < 0) { | ||
91 | jz_log(jz, JZ_LOG_ERROR, "libusb_open: %s", libusb_strerror(rc)); | ||
92 | rc = JZ_ERR_USB; | ||
93 | goto error; | ||
94 | } | ||
95 | |||
96 | rc = libusb_claim_interface(usb_handle, 0); | ||
97 | if(rc < 0) { | ||
98 | jz_log(jz, JZ_LOG_ERROR, "libusb_claim_interface: %s", libusb_strerror(rc)); | ||
99 | rc = JZ_ERR_USB; | ||
100 | goto error; | ||
101 | } | ||
102 | |||
103 | dev->jz = jz; | ||
104 | dev->handle = usb_handle; | ||
105 | *devptr = dev; | ||
106 | rc = JZ_SUCCESS; | ||
107 | |||
108 | exit: | ||
109 | if(dev_list) | ||
110 | libusb_free_device_list(dev_list, true); | ||
111 | return rc; | ||
112 | |||
113 | error: | ||
114 | if(dev) | ||
115 | free(dev); | ||
116 | if(usb_handle) | ||
117 | libusb_close(usb_handle); | ||
118 | jz_context_unref_libusb(jz); | ||
119 | goto exit; | ||
120 | } | ||
121 | |||
122 | void jz_usb_close(jz_usbdev* dev) | ||
123 | { | ||
124 | libusb_release_interface(dev->handle, 0); | ||
125 | libusb_close(dev->handle); | ||
126 | jz_context_unref_libusb(dev->jz); | ||
127 | free(dev); | ||
128 | } | ||
129 | |||
130 | static int jz_usb_vendor_req(jz_usbdev* dev, int req, uint32_t arg) | ||
131 | { | ||
132 | int rc = libusb_control_transfer(dev->handle, | ||
133 | LIBUSB_ENDPOINT_OUT | LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_DEVICE, | ||
134 | req, arg >> 16, arg & 0xffff, NULL, 0, 1000); | ||
135 | |||
136 | if(rc < 0) { | ||
137 | jz_log(dev->jz, JZ_LOG_ERROR, "libusb_control_transfer: %s", libusb_strerror(rc)); | ||
138 | rc = JZ_ERR_USB; | ||
139 | } else { | ||
140 | rc = JZ_SUCCESS; | ||
141 | } | ||
142 | |||
143 | return rc; | ||
144 | } | ||
145 | |||
146 | static int jz_usb_transfer(jz_usbdev* dev, bool write, size_t len, void* buf) | ||
147 | { | ||
148 | int xfered = 0; | ||
149 | int ep = write ? LIBUSB_ENDPOINT_OUT|1 : LIBUSB_ENDPOINT_IN|1; | ||
150 | int rc = libusb_bulk_transfer(dev->handle, ep, buf, len, &xfered, 10000); | ||
151 | |||
152 | if(rc < 0) { | ||
153 | jz_log(dev->jz, JZ_LOG_ERROR, "libusb_bulk_transfer: %s", libusb_strerror(rc)); | ||
154 | rc = JZ_ERR_USB; | ||
155 | } else if(xfered != (int)len) { | ||
156 | jz_log(dev->jz, JZ_LOG_ERROR, "libusb_bulk_transfer: incorrect amount of data transfered"); | ||
157 | rc = JZ_ERR_USB; | ||
158 | } else { | ||
159 | rc = JZ_SUCCESS; | ||
160 | } | ||
161 | |||
162 | return rc; | ||
163 | } | ||
164 | |||
165 | static int jz_usb_sendrecv(jz_usbdev* dev, bool write, uint32_t addr, | ||
166 | size_t len, void* data) | ||
167 | { | ||
168 | int rc; | ||
169 | rc = jz_usb_vendor_req(dev, VR_SET_DATA_ADDRESS, addr); | ||
170 | if(rc < 0) | ||
171 | return rc; | ||
172 | |||
173 | rc = jz_usb_vendor_req(dev, VR_SET_DATA_LENGTH, len); | ||
174 | if(rc < 0) | ||
175 | return rc; | ||
176 | |||
177 | return jz_usb_transfer(dev, write, len, data); | ||
178 | } | ||
179 | |||
180 | int jz_usb_send(jz_usbdev* dev, uint32_t addr, size_t len, const void* data) | ||
181 | { | ||
182 | return jz_usb_sendrecv(dev, true, addr, len, (void*)data); | ||
183 | } | ||
184 | |||
185 | int jz_usb_recv(jz_usbdev* dev, uint32_t addr, size_t len, void* data) | ||
186 | { | ||
187 | return jz_usb_sendrecv(dev, false, addr, len, data); | ||
188 | } | ||
189 | |||
190 | int jz_usb_start1(jz_usbdev* dev, uint32_t addr) | ||
191 | { | ||
192 | return jz_usb_vendor_req(dev, VR_PROGRAM_START1, addr); | ||
193 | } | ||
194 | |||
195 | int jz_usb_start2(jz_usbdev* dev, uint32_t addr) | ||
196 | { | ||
197 | return jz_usb_vendor_req(dev, VR_PROGRAM_START2, addr); | ||
198 | } | ||
199 | |||
200 | int jz_usb_flush_caches(jz_usbdev* dev) | ||
201 | { | ||
202 | return jz_usb_vendor_req(dev, VR_FLUSH_CACHES, 0); | ||
203 | } | ||