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Commit | Line | Data |
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a1bb33af | 1 | /* |
50985c20 | 2 | * This file is part of the libsigrok project. |
a1bb33af | 3 | * |
c73d2ea4 | 4 | * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com> |
a1bb33af UH |
5 | * |
6 | * This program is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | /* | |
21 | * Helper functions for the Cypress EZ-USB / FX2 series chips. | |
22 | */ | |
23 | ||
6ec6c43b | 24 | #include <config.h> |
a1bb33af UH |
25 | #include <libusb.h> |
26 | #include <glib.h> | |
3bbd9849 | 27 | #include <glib/gstdio.h> |
a1bb33af UH |
28 | #include <stdio.h> |
29 | #include <errno.h> | |
30 | #include <string.h> | |
c1aae900 | 31 | #include <libsigrok/libsigrok.h> |
45c59c8b | 32 | #include "libsigrok-internal.h" |
a1bb33af | 33 | |
3544f848 | 34 | #define LOG_PREFIX "ezusb" |
d458a0ac | 35 | |
8e2d6c9d DE |
36 | #define FW_CHUNKSIZE (4 * 1024) |
37 | ||
1a081ca6 | 38 | SR_PRIV int ezusb_reset(struct libusb_device_handle *hdl, int set_clear) |
a1bb33af | 39 | { |
ebc34738 | 40 | int ret; |
a1bb33af UH |
41 | unsigned char buf[1]; |
42 | ||
d458a0ac | 43 | sr_info("setting CPU reset mode %s...", |
7b48d6e1 | 44 | set_clear ? "on" : "off"); |
a1bb33af | 45 | buf[0] = set_clear ? 1 : 0; |
ebc34738 | 46 | ret = libusb_control_transfer(hdl, LIBUSB_REQUEST_TYPE_VENDOR, 0xa0, |
9d2933fb | 47 | 0xe600, 0x0000, buf, 1, 100); |
ebc34738 | 48 | if (ret < 0) |
1740429d | 49 | sr_err("Unable to send control request: %s.", |
d4928d71 | 50 | libusb_error_name(ret)); |
a1bb33af | 51 | |
ebc34738 | 52 | return ret; |
a1bb33af UH |
53 | } |
54 | ||
8e2d6c9d DE |
55 | SR_PRIV int ezusb_install_firmware(struct sr_context *ctx, |
56 | libusb_device_handle *hdl, | |
57 | const char *name) | |
a1bb33af | 58 | { |
8e2d6c9d DE |
59 | unsigned char *firmware; |
60 | size_t length, offset, chunksize; | |
61 | int ret, result; | |
62 | ||
63 | /* Max size is 64 kiB since the value field of the setup packet, | |
64 | * which holds the firmware offset, is only 16 bit wide. | |
65 | */ | |
66 | firmware = sr_resource_load(ctx, SR_RESOURCE_FIRMWARE, | |
67 | name, &length, 1 << 16); | |
68 | if (!firmware) | |
6d754b6d | 69 | return SR_ERR; |
8e2d6c9d DE |
70 | |
71 | sr_info("Uploading firmware '%s'.", name); | |
a1bb33af | 72 | |
6d754b6d BV |
73 | result = SR_OK; |
74 | offset = 0; | |
8e2d6c9d DE |
75 | while (offset < length) { |
76 | chunksize = MIN(length - offset, FW_CHUNKSIZE); | |
77 | ||
ebc34738 | 78 | ret = libusb_control_transfer(hdl, LIBUSB_REQUEST_TYPE_VENDOR | |
986f7270 | 79 | LIBUSB_ENDPOINT_OUT, 0xa0, offset, |
8e2d6c9d DE |
80 | 0x0000, firmware + offset, |
81 | chunksize, 100); | |
ebc34738 | 82 | if (ret < 0) { |
1740429d | 83 | sr_err("Unable to send firmware to device: %s.", |
d4928d71 | 84 | libusb_error_name(ret)); |
8e2d6c9d DE |
85 | g_free(firmware); |
86 | return SR_ERR; | |
a1bb33af | 87 | } |
8e2d6c9d | 88 | sr_info("Uploaded %zu bytes.", chunksize); |
a1bb33af UH |
89 | offset += chunksize; |
90 | } | |
8e2d6c9d DE |
91 | g_free(firmware); |
92 | ||
93 | sr_info("Firmware upload done."); | |
a1bb33af UH |
94 | |
95 | return result; | |
96 | } | |
edf60d05 | 97 | |
8e2d6c9d DE |
98 | SR_PRIV int ezusb_upload_firmware(struct sr_context *ctx, libusb_device *dev, |
99 | int configuration, const char *name) | |
edf60d05 UH |
100 | { |
101 | struct libusb_device_handle *hdl; | |
ebc34738 | 102 | int ret; |
edf60d05 | 103 | |
d458a0ac | 104 | sr_info("uploading firmware to device on %d.%d", |
7b48d6e1 | 105 | libusb_get_bus_number(dev), libusb_get_device_address(dev)); |
edf60d05 | 106 | |
ebc34738 | 107 | if ((ret = libusb_open(dev, &hdl)) < 0) { |
1740429d | 108 | sr_err("failed to open device: %s.", libusb_error_name(ret)); |
6d754b6d | 109 | return SR_ERR; |
edf60d05 UH |
110 | } |
111 | ||
3f98bf70 | 112 | /* |
f3f19d11 | 113 | * The libusb Darwin backend is broken: it can report a kernel driver being |
3f98bf70 BV |
114 | * active, but detaching it always returns an error. |
115 | */ | |
116 | #if !defined(__APPLE__) | |
117 | if (libusb_kernel_driver_active(hdl, 0) == 1) { | |
ebc34738 | 118 | if ((ret = libusb_detach_kernel_driver(hdl, 0)) < 0) { |
d4928d71 PS |
119 | sr_err("failed to detach kernel driver: %s", |
120 | libusb_error_name(ret)); | |
6d754b6d | 121 | return SR_ERR; |
e10d6e32 BV |
122 | } |
123 | } | |
bf3f06c9 | 124 | #endif |
e10d6e32 | 125 | |
ebc34738 | 126 | if ((ret = libusb_set_configuration(hdl, configuration)) < 0) { |
d4928d71 PS |
127 | sr_err("Unable to set configuration: %s", |
128 | libusb_error_name(ret)); | |
6d754b6d | 129 | return SR_ERR; |
edf60d05 UH |
130 | } |
131 | ||
132 | if ((ezusb_reset(hdl, 1)) < 0) | |
6d754b6d | 133 | return SR_ERR; |
edf60d05 | 134 | |
8e2d6c9d | 135 | if (ezusb_install_firmware(ctx, hdl, name) < 0) |
6d754b6d | 136 | return SR_ERR; |
edf60d05 UH |
137 | |
138 | if ((ezusb_reset(hdl, 0)) < 0) | |
6d754b6d | 139 | return SR_ERR; |
edf60d05 UH |
140 | |
141 | libusb_close(hdl); | |
142 | ||
6d754b6d | 143 | return SR_OK; |
edf60d05 | 144 | } |