Loading...
1/*
2 * Emagic EMI 2|6 usb audio interface firmware loader.
3 * Copyright (C) 2002
4 * Tapio Laxström (tapio.laxstrom@iptime.fi)
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, version 2.
9 */
10#include <linux/kernel.h>
11#include <linux/errno.h>
12#include <linux/slab.h>
13#include <linux/init.h>
14#include <linux/module.h>
15#include <linux/usb.h>
16#include <linux/delay.h>
17#include <linux/firmware.h>
18#include <linux/ihex.h>
19
20/* include firmware (variables)*/
21
22/* FIXME: This is quick and dirty solution! */
23#define SPDIF /* if you want SPDIF comment next line */
24//#undef SPDIF /* if you want MIDI uncomment this line */
25
26#ifdef SPDIF
27#define FIRMWARE_FW "emi62/spdif.fw"
28#else
29#define FIRMWARE_FW "emi62/midi.fw"
30#endif
31
32#define EMI62_VENDOR_ID 0x086a /* Emagic Soft-und Hardware GmBH */
33#define EMI62_PRODUCT_ID 0x0110 /* EMI 6|2m without firmware */
34
35#define ANCHOR_LOAD_INTERNAL 0xA0 /* Vendor specific request code for Anchor Upload/Download (This one is implemented in the core) */
36#define ANCHOR_LOAD_EXTERNAL 0xA3 /* This command is not implemented in the core. Requires firmware */
37#define ANCHOR_LOAD_FPGA 0xA5 /* This command is not implemented in the core. Requires firmware. Emagic extension */
38#define MAX_INTERNAL_ADDRESS 0x1B3F /* This is the highest internal RAM address for the AN2131Q */
39#define CPUCS_REG 0x7F92 /* EZ-USB Control and Status Register. Bit 0 controls 8051 reset */
40#define INTERNAL_RAM(address) (address <= MAX_INTERNAL_ADDRESS)
41
42static int emi62_writememory(struct usb_device *dev, int address,
43 const unsigned char *data, int length,
44 __u8 bRequest);
45static int emi62_set_reset(struct usb_device *dev, unsigned char reset_bit);
46static int emi62_load_firmware (struct usb_device *dev);
47static int emi62_probe(struct usb_interface *intf, const struct usb_device_id *id);
48static void emi62_disconnect(struct usb_interface *intf);
49static int __init emi62_init (void);
50static void __exit emi62_exit (void);
51
52
53/* thanks to drivers/usb/serial/keyspan_pda.c code */
54static int emi62_writememory(struct usb_device *dev, int address,
55 const unsigned char *data, int length,
56 __u8 request)
57{
58 int result;
59 unsigned char *buffer = kmemdup(data, length, GFP_KERNEL);
60
61 if (!buffer) {
62 err("emi62: kmalloc(%d) failed.", length);
63 return -ENOMEM;
64 }
65 /* Note: usb_control_msg returns negative value on error or length of the
66 * data that was written! */
67 result = usb_control_msg (dev, usb_sndctrlpipe(dev, 0), request, 0x40, address, 0, buffer, length, 300);
68 kfree (buffer);
69 return result;
70}
71
72/* thanks to drivers/usb/serial/keyspan_pda.c code */
73static int emi62_set_reset (struct usb_device *dev, unsigned char reset_bit)
74{
75 int response;
76 dev_info(&dev->dev, "%s - %d\n", __func__, reset_bit);
77
78 response = emi62_writememory (dev, CPUCS_REG, &reset_bit, 1, 0xa0);
79 if (response < 0) {
80 err("emi62: set_reset (%d) failed", reset_bit);
81 }
82 return response;
83}
84
85#define FW_LOAD_SIZE 1023
86
87static int emi62_load_firmware (struct usb_device *dev)
88{
89 const struct firmware *loader_fw = NULL;
90 const struct firmware *bitstream_fw = NULL;
91 const struct firmware *firmware_fw = NULL;
92 const struct ihex_binrec *rec;
93 int err;
94 int i;
95 __u32 addr; /* Address to write */
96 __u8 *buf;
97
98 dev_dbg(&dev->dev, "load_firmware\n");
99 buf = kmalloc(FW_LOAD_SIZE, GFP_KERNEL);
100 if (!buf) {
101 err( "%s - error loading firmware: error = %d", __func__, -ENOMEM);
102 err = -ENOMEM;
103 goto wraperr;
104 }
105
106 err = request_ihex_firmware(&loader_fw, "emi62/loader.fw", &dev->dev);
107 if (err)
108 goto nofw;
109
110 err = request_ihex_firmware(&bitstream_fw, "emi62/bitstream.fw",
111 &dev->dev);
112 if (err)
113 goto nofw;
114
115 err = request_ihex_firmware(&firmware_fw, FIRMWARE_FW, &dev->dev);
116 if (err) {
117 nofw:
118 err( "%s - request_firmware() failed", __func__);
119 goto wraperr;
120 }
121
122 /* Assert reset (stop the CPU in the EMI) */
123 err = emi62_set_reset(dev,1);
124 if (err < 0) {
125 err("%s - error loading firmware: error = %d", __func__, err);
126 goto wraperr;
127 }
128
129 rec = (const struct ihex_binrec *)loader_fw->data;
130
131 /* 1. We need to put the loader for the FPGA into the EZ-USB */
132 while (rec) {
133 err = emi62_writememory(dev, be32_to_cpu(rec->addr),
134 rec->data, be16_to_cpu(rec->len),
135 ANCHOR_LOAD_INTERNAL);
136 if (err < 0) {
137 err("%s - error loading firmware: error = %d", __func__, err);
138 goto wraperr;
139 }
140 rec = ihex_next_binrec(rec);
141 }
142
143 /* De-assert reset (let the CPU run) */
144 err = emi62_set_reset(dev,0);
145 if (err < 0) {
146 err("%s - error loading firmware: error = %d", __func__, err);
147 goto wraperr;
148 }
149 msleep(250); /* let device settle */
150
151 /* 2. We upload the FPGA firmware into the EMI
152 * Note: collect up to 1023 (yes!) bytes and send them with
153 * a single request. This is _much_ faster! */
154 rec = (const struct ihex_binrec *)bitstream_fw->data;
155 do {
156 i = 0;
157 addr = be32_to_cpu(rec->addr);
158
159 /* intel hex records are terminated with type 0 element */
160 while (rec && (i + be16_to_cpu(rec->len) < FW_LOAD_SIZE)) {
161 memcpy(buf + i, rec->data, be16_to_cpu(rec->len));
162 i += be16_to_cpu(rec->len);
163 rec = ihex_next_binrec(rec);
164 }
165 err = emi62_writememory(dev, addr, buf, i, ANCHOR_LOAD_FPGA);
166 if (err < 0) {
167 err("%s - error loading firmware: error = %d", __func__, err);
168 goto wraperr;
169 }
170 } while (rec);
171
172 /* Assert reset (stop the CPU in the EMI) */
173 err = emi62_set_reset(dev,1);
174 if (err < 0) {
175 err("%s - error loading firmware: error = %d", __func__, err);
176 goto wraperr;
177 }
178
179 /* 3. We need to put the loader for the firmware into the EZ-USB (again...) */
180 for (rec = (const struct ihex_binrec *)loader_fw->data;
181 rec; rec = ihex_next_binrec(rec)) {
182 err = emi62_writememory(dev, be32_to_cpu(rec->addr),
183 rec->data, be16_to_cpu(rec->len),
184 ANCHOR_LOAD_INTERNAL);
185 if (err < 0) {
186 err("%s - error loading firmware: error = %d", __func__, err);
187 goto wraperr;
188 }
189 }
190
191 /* De-assert reset (let the CPU run) */
192 err = emi62_set_reset(dev,0);
193 if (err < 0) {
194 err("%s - error loading firmware: error = %d", __func__, err);
195 goto wraperr;
196 }
197 msleep(250); /* let device settle */
198
199 /* 4. We put the part of the firmware that lies in the external RAM into the EZ-USB */
200
201 for (rec = (const struct ihex_binrec *)firmware_fw->data;
202 rec; rec = ihex_next_binrec(rec)) {
203 if (!INTERNAL_RAM(be32_to_cpu(rec->addr))) {
204 err = emi62_writememory(dev, be32_to_cpu(rec->addr),
205 rec->data, be16_to_cpu(rec->len),
206 ANCHOR_LOAD_EXTERNAL);
207 if (err < 0) {
208 err("%s - error loading firmware: error = %d", __func__, err);
209 goto wraperr;
210 }
211 }
212 }
213
214 /* Assert reset (stop the CPU in the EMI) */
215 err = emi62_set_reset(dev,1);
216 if (err < 0) {
217 err("%s - error loading firmware: error = %d", __func__, err);
218 goto wraperr;
219 }
220
221 for (rec = (const struct ihex_binrec *)firmware_fw->data;
222 rec; rec = ihex_next_binrec(rec)) {
223 if (INTERNAL_RAM(be32_to_cpu(rec->addr))) {
224 err = emi62_writememory(dev, be32_to_cpu(rec->addr),
225 rec->data, be16_to_cpu(rec->len),
226 ANCHOR_LOAD_EXTERNAL);
227 if (err < 0) {
228 err("%s - error loading firmware: error = %d", __func__, err);
229 goto wraperr;
230 }
231 }
232 }
233
234 /* De-assert reset (let the CPU run) */
235 err = emi62_set_reset(dev,0);
236 if (err < 0) {
237 err("%s - error loading firmware: error = %d", __func__, err);
238 goto wraperr;
239 }
240 msleep(250); /* let device settle */
241
242 release_firmware(loader_fw);
243 release_firmware(bitstream_fw);
244 release_firmware(firmware_fw);
245
246 kfree(buf);
247
248 /* return 1 to fail the driver inialization
249 * and give real driver change to load */
250 return 1;
251
252wraperr:
253 release_firmware(loader_fw);
254 release_firmware(bitstream_fw);
255 release_firmware(firmware_fw);
256
257 kfree(buf);
258 dev_err(&dev->dev, "Error\n");
259 return err;
260}
261
262static const struct usb_device_id id_table[] __devinitconst = {
263 { USB_DEVICE(EMI62_VENDOR_ID, EMI62_PRODUCT_ID) },
264 { } /* Terminating entry */
265};
266
267MODULE_DEVICE_TABLE (usb, id_table);
268
269static int emi62_probe(struct usb_interface *intf, const struct usb_device_id *id)
270{
271 struct usb_device *dev = interface_to_usbdev(intf);
272 dev_dbg(&intf->dev, "emi62_probe\n");
273
274 dev_info(&intf->dev, "%s start\n", __func__);
275
276 emi62_load_firmware(dev);
277
278 /* do not return the driver context, let real audio driver do that */
279 return -EIO;
280}
281
282static void emi62_disconnect(struct usb_interface *intf)
283{
284}
285
286static struct usb_driver emi62_driver = {
287 .name = "emi62 - firmware loader",
288 .probe = emi62_probe,
289 .disconnect = emi62_disconnect,
290 .id_table = id_table,
291};
292
293static int __init emi62_init (void)
294{
295 int retval;
296 retval = usb_register (&emi62_driver);
297 if (retval)
298 printk(KERN_ERR "adi-emi: registration failed\n");
299 return retval;
300}
301
302static void __exit emi62_exit (void)
303{
304 usb_deregister (&emi62_driver);
305}
306
307module_init(emi62_init);
308module_exit(emi62_exit);
309
310MODULE_AUTHOR("Tapio Laxström");
311MODULE_DESCRIPTION("Emagic EMI 6|2m firmware loader.");
312MODULE_LICENSE("GPL");
313
314MODULE_FIRMWARE("emi62/loader.fw");
315MODULE_FIRMWARE("emi62/bitstream.fw");
316MODULE_FIRMWARE(FIRMWARE_FW);
317/* vi:ai:syntax=c:sw=8:ts=8:tw=80
318 */
1/*
2 * Emagic EMI 2|6 usb audio interface firmware loader.
3 * Copyright (C) 2002
4 * Tapio Laxström (tapio.laxstrom@iptime.fi)
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, version 2.
9 */
10#include <linux/kernel.h>
11#include <linux/errno.h>
12#include <linux/slab.h>
13#include <linux/module.h>
14#include <linux/usb.h>
15#include <linux/delay.h>
16#include <linux/firmware.h>
17#include <linux/ihex.h>
18
19/* include firmware (variables)*/
20
21/* FIXME: This is quick and dirty solution! */
22#define SPDIF /* if you want SPDIF comment next line */
23//#undef SPDIF /* if you want MIDI uncomment this line */
24
25#ifdef SPDIF
26#define FIRMWARE_FW "emi62/spdif.fw"
27#else
28#define FIRMWARE_FW "emi62/midi.fw"
29#endif
30
31#define EMI62_VENDOR_ID 0x086a /* Emagic Soft-und Hardware GmBH */
32#define EMI62_PRODUCT_ID 0x0110 /* EMI 6|2m without firmware */
33
34#define ANCHOR_LOAD_INTERNAL 0xA0 /* Vendor specific request code for Anchor Upload/Download (This one is implemented in the core) */
35#define ANCHOR_LOAD_EXTERNAL 0xA3 /* This command is not implemented in the core. Requires firmware */
36#define ANCHOR_LOAD_FPGA 0xA5 /* This command is not implemented in the core. Requires firmware. Emagic extension */
37#define MAX_INTERNAL_ADDRESS 0x1B3F /* This is the highest internal RAM address for the AN2131Q */
38#define CPUCS_REG 0x7F92 /* EZ-USB Control and Status Register. Bit 0 controls 8051 reset */
39#define INTERNAL_RAM(address) (address <= MAX_INTERNAL_ADDRESS)
40
41static int emi62_writememory(struct usb_device *dev, int address,
42 const unsigned char *data, int length,
43 __u8 bRequest);
44static int emi62_set_reset(struct usb_device *dev, unsigned char reset_bit);
45static int emi62_load_firmware (struct usb_device *dev);
46static int emi62_probe(struct usb_interface *intf, const struct usb_device_id *id);
47static void emi62_disconnect(struct usb_interface *intf);
48
49/* thanks to drivers/usb/serial/keyspan_pda.c code */
50static int emi62_writememory(struct usb_device *dev, int address,
51 const unsigned char *data, int length,
52 __u8 request)
53{
54 int result;
55 unsigned char *buffer = kmemdup(data, length, GFP_KERNEL);
56
57 if (!buffer) {
58 dev_err(&dev->dev, "kmalloc(%d) failed.\n", length);
59 return -ENOMEM;
60 }
61 /* Note: usb_control_msg returns negative value on error or length of the
62 * data that was written! */
63 result = usb_control_msg (dev, usb_sndctrlpipe(dev, 0), request, 0x40, address, 0, buffer, length, 300);
64 kfree (buffer);
65 return result;
66}
67
68/* thanks to drivers/usb/serial/keyspan_pda.c code */
69static int emi62_set_reset (struct usb_device *dev, unsigned char reset_bit)
70{
71 int response;
72 dev_info(&dev->dev, "%s - %d\n", __func__, reset_bit);
73
74 response = emi62_writememory (dev, CPUCS_REG, &reset_bit, 1, 0xa0);
75 if (response < 0)
76 dev_err(&dev->dev, "set_reset (%d) failed\n", reset_bit);
77 return response;
78}
79
80#define FW_LOAD_SIZE 1023
81
82static int emi62_load_firmware (struct usb_device *dev)
83{
84 const struct firmware *loader_fw = NULL;
85 const struct firmware *bitstream_fw = NULL;
86 const struct firmware *firmware_fw = NULL;
87 const struct ihex_binrec *rec;
88 int err = -ENOMEM;
89 int i;
90 __u32 addr; /* Address to write */
91 __u8 *buf;
92
93 dev_dbg(&dev->dev, "load_firmware\n");
94 buf = kmalloc(FW_LOAD_SIZE, GFP_KERNEL);
95 if (!buf)
96 goto wraperr;
97
98 err = request_ihex_firmware(&loader_fw, "emi62/loader.fw", &dev->dev);
99 if (err)
100 goto nofw;
101
102 err = request_ihex_firmware(&bitstream_fw, "emi62/bitstream.fw",
103 &dev->dev);
104 if (err)
105 goto nofw;
106
107 err = request_ihex_firmware(&firmware_fw, FIRMWARE_FW, &dev->dev);
108 if (err) {
109 nofw:
110 goto wraperr;
111 }
112
113 /* Assert reset (stop the CPU in the EMI) */
114 err = emi62_set_reset(dev,1);
115 if (err < 0)
116 goto wraperr;
117
118 rec = (const struct ihex_binrec *)loader_fw->data;
119
120 /* 1. We need to put the loader for the FPGA into the EZ-USB */
121 while (rec) {
122 err = emi62_writememory(dev, be32_to_cpu(rec->addr),
123 rec->data, be16_to_cpu(rec->len),
124 ANCHOR_LOAD_INTERNAL);
125 if (err < 0)
126 goto wraperr;
127 rec = ihex_next_binrec(rec);
128 }
129
130 /* De-assert reset (let the CPU run) */
131 err = emi62_set_reset(dev,0);
132 if (err < 0)
133 goto wraperr;
134 msleep(250); /* let device settle */
135
136 /* 2. We upload the FPGA firmware into the EMI
137 * Note: collect up to 1023 (yes!) bytes and send them with
138 * a single request. This is _much_ faster! */
139 rec = (const struct ihex_binrec *)bitstream_fw->data;
140 do {
141 i = 0;
142 addr = be32_to_cpu(rec->addr);
143
144 /* intel hex records are terminated with type 0 element */
145 while (rec && (i + be16_to_cpu(rec->len) < FW_LOAD_SIZE)) {
146 memcpy(buf + i, rec->data, be16_to_cpu(rec->len));
147 i += be16_to_cpu(rec->len);
148 rec = ihex_next_binrec(rec);
149 }
150 err = emi62_writememory(dev, addr, buf, i, ANCHOR_LOAD_FPGA);
151 if (err < 0)
152 goto wraperr;
153 } while (rec);
154
155 /* Assert reset (stop the CPU in the EMI) */
156 err = emi62_set_reset(dev,1);
157 if (err < 0)
158 goto wraperr;
159
160 /* 3. We need to put the loader for the firmware into the EZ-USB (again...) */
161 for (rec = (const struct ihex_binrec *)loader_fw->data;
162 rec; rec = ihex_next_binrec(rec)) {
163 err = emi62_writememory(dev, be32_to_cpu(rec->addr),
164 rec->data, be16_to_cpu(rec->len),
165 ANCHOR_LOAD_INTERNAL);
166 if (err < 0)
167 goto wraperr;
168 }
169
170 /* De-assert reset (let the CPU run) */
171 err = emi62_set_reset(dev,0);
172 if (err < 0)
173 goto wraperr;
174 msleep(250); /* let device settle */
175
176 /* 4. We put the part of the firmware that lies in the external RAM into the EZ-USB */
177
178 for (rec = (const struct ihex_binrec *)firmware_fw->data;
179 rec; rec = ihex_next_binrec(rec)) {
180 if (!INTERNAL_RAM(be32_to_cpu(rec->addr))) {
181 err = emi62_writememory(dev, be32_to_cpu(rec->addr),
182 rec->data, be16_to_cpu(rec->len),
183 ANCHOR_LOAD_EXTERNAL);
184 if (err < 0)
185 goto wraperr;
186 }
187 }
188
189 /* Assert reset (stop the CPU in the EMI) */
190 err = emi62_set_reset(dev,1);
191 if (err < 0)
192 goto wraperr;
193
194 for (rec = (const struct ihex_binrec *)firmware_fw->data;
195 rec; rec = ihex_next_binrec(rec)) {
196 if (INTERNAL_RAM(be32_to_cpu(rec->addr))) {
197 err = emi62_writememory(dev, be32_to_cpu(rec->addr),
198 rec->data, be16_to_cpu(rec->len),
199 ANCHOR_LOAD_EXTERNAL);
200 if (err < 0)
201 goto wraperr;
202 }
203 }
204
205 /* De-assert reset (let the CPU run) */
206 err = emi62_set_reset(dev,0);
207 if (err < 0)
208 goto wraperr;
209 msleep(250); /* let device settle */
210
211 release_firmware(loader_fw);
212 release_firmware(bitstream_fw);
213 release_firmware(firmware_fw);
214
215 kfree(buf);
216
217 /* return 1 to fail the driver inialization
218 * and give real driver change to load */
219 return 1;
220
221wraperr:
222 if (err < 0)
223 dev_err(&dev->dev,"%s - error loading firmware: error = %d\n",
224 __func__, err);
225 release_firmware(loader_fw);
226 release_firmware(bitstream_fw);
227 release_firmware(firmware_fw);
228
229 kfree(buf);
230 dev_err(&dev->dev, "Error\n");
231 return err;
232}
233
234static const struct usb_device_id id_table[] = {
235 { USB_DEVICE(EMI62_VENDOR_ID, EMI62_PRODUCT_ID) },
236 { } /* Terminating entry */
237};
238
239MODULE_DEVICE_TABLE (usb, id_table);
240
241static int emi62_probe(struct usb_interface *intf, const struct usb_device_id *id)
242{
243 struct usb_device *dev = interface_to_usbdev(intf);
244 dev_dbg(&intf->dev, "emi62_probe\n");
245
246 dev_info(&intf->dev, "%s start\n", __func__);
247
248 emi62_load_firmware(dev);
249
250 /* do not return the driver context, let real audio driver do that */
251 return -EIO;
252}
253
254static void emi62_disconnect(struct usb_interface *intf)
255{
256}
257
258static struct usb_driver emi62_driver = {
259 .name = "emi62 - firmware loader",
260 .probe = emi62_probe,
261 .disconnect = emi62_disconnect,
262 .id_table = id_table,
263};
264
265module_usb_driver(emi62_driver);
266
267MODULE_AUTHOR("Tapio Laxström");
268MODULE_DESCRIPTION("Emagic EMI 6|2m firmware loader.");
269MODULE_LICENSE("GPL");
270
271MODULE_FIRMWARE("emi62/loader.fw");
272MODULE_FIRMWARE("emi62/bitstream.fw");
273MODULE_FIRMWARE(FIRMWARE_FW);
274/* vi:ai:syntax=c:sw=8:ts=8:tw=80
275 */