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ALSA: add DICE driver

As a start point for further development, this is an incomplete driver for DICE devices: - only playback (so no clock source except the bus clock) - only 44.1 kHz - no MIDI - recovery after bus reset is slow - hwdep device is created, but not actually implemented Contains compilation fixes by Stefan Richter.

Clemens Ladisch committed 15 years ago

Commit 82fbb4f1 parent 6e466457 files · +1078 −1Browse files

Unified · Split

7 files
  1. Documentation/ioctl/ioctl-number.txt +1 −0
  2. include/uapi/sound/Kbuild +1 −0
  3. include/uapi/sound/asound.h +2 −1
  4. include/uapi/sound/firewire.h +51 −0
  5. sound/firewire/Kconfig +13 −0
  6. sound/firewire/Makefile +2 −0
  7. sound/firewire/dice.c +1008 −0
Documentation/ioctl/ioctl-number.txt+1−0
@@ -138,6 +138,7 @@ Code Seq#(hex) Include File Comments · 137 unmodified lines
138'H' C0-DF net/bluetooth/cmtp/cmtp.h conflict!138'H' C0-DF net/bluetooth/cmtp/cmtp.h conflict!
139'H' C0-DF net/bluetooth/bnep/bnep.h conflict!139'H' C0-DF net/bluetooth/bnep/bnep.h conflict!
140'H' F1 linux/hid-roccat.h <mailto:erazor_de@users.sourceforge.net>140'H' F1 linux/hid-roccat.h <mailto:erazor_de@users.sourceforge.net>
141'H' F8-FA sound/firewire.h
141'I' all linux/isdn.h conflict!142'I' all linux/isdn.h conflict!
142'I' 00-0F drivers/isdn/divert/isdn_divert.h conflict!143'I' 00-0F drivers/isdn/divert/isdn_divert.h conflict!
143'I' 40-4F linux/mISDNif.h conflict!144'I' 40-4F linux/mISDNif.h conflict!
include/uapi/sound/Kbuild+1−0
@@ -5,6 +5,7 @@ header-y += asound_fm.h · 4 unmodified lines
5header-y += compress_offload.h5header-y += compress_offload.h
6header-y += compress_params.h6header-y += compress_params.h
7header-y += emu10k1.h7header-y += emu10k1.h
8header-y += firewire.h
8header-y += hdsp.h9header-y += hdsp.h
9header-y += hdspm.h10header-y += hdspm.h
10header-y += sb16_csp.h11header-y += sb16_csp.h
include/uapi/sound/asound.h+2−1
@@ -93,9 +93,10 @@ enum { · 92 unmodified lines
93 SNDRV_HWDEP_IFACE_SB_RC, /* SB Extigy/Audigy2NX remote control */93 SNDRV_HWDEP_IFACE_SB_RC, /* SB Extigy/Audigy2NX remote control */
94 SNDRV_HWDEP_IFACE_HDA, /* HD-audio */94 SNDRV_HWDEP_IFACE_HDA, /* HD-audio */
95 SNDRV_HWDEP_IFACE_USB_STREAM, /* direct access to usb stream */95 SNDRV_HWDEP_IFACE_USB_STREAM, /* direct access to usb stream */
96 SNDRV_HWDEP_IFACE_FW_DICE, /* TC DICE FireWire device */
96 97
97 /* Don't forget to change the following: */98 /* Don't forget to change the following: */
98 SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_USB_STREAM99 SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_FW_DICE
99};100};
100 101
101struct snd_hwdep_info {102struct snd_hwdep_info {
include/uapi/sound/firewire.h+51−0
@@ -0,0 +1,51 @@
1#ifndef UAPI_SOUND_FIREWIRE_H_INCLUDED
2#define UAPI_SOUND_FIREWIRE_H_INCLUDED
3
4#include <linux/ioctl.h>
5
6/* events can be read() from the hwdep device */
7
8#define SNDRV_FIREWIRE_EVENT_LOCK_STATUS 0x000010cc
9#define SNDRV_FIREWIRE_EVENT_DICE_NOTIFICATION 0xd1ce004e
10
11struct snd_firewire_event_common {
12 unsigned int type; /* SNDRV_FIREWIRE_EVENT_xxx */
13};
14
15struct snd_firewire_event_lock_status {
16 unsigned int type;
17 unsigned int status; /* 0/1 = unlocked/locked */
18};
19
20struct snd_firewire_event_dice_notification {
21 unsigned int type;
22 unsigned int notification; /* DICE-specific bits */
23};
24
25union snd_firewire_event {
26 struct snd_firewire_event_common common;
27 struct snd_firewire_event_lock_status lock_status;
28 struct snd_firewire_event_dice_notification dice_notification;
29};
30
31
32#define SNDRV_FIREWIRE_IOCTL_GET_INFO _IOR('H', 0xf8, struct snd_firewire_get_info)
33#define SNDRV_FIREWIRE_IOCTL_LOCK _IO('H', 0xf9)
34#define SNDRV_FIREWIRE_IOCTL_UNLOCK _IO('H', 0xfa)
35
36#define SNDRV_FIREWIRE_TYPE_DICE 1
37/* Fireworks, AV/C, RME, MOTU, ... */
38
39struct snd_firewire_get_info {
40 unsigned int type; /* SNDRV_FIREWIRE_TYPE_xxx */
41 unsigned int card; /* same as fw_cdev_get_info.card */
42 unsigned char guid[8];
43 char device_name[16]; /* device node in /dev */
44};
45
46/*
47 * SNDRV_FIREWIRE_IOCTL_LOCK prevents the driver from streaming.
48 * Returns -EBUSY if the driver is already streaming.
49 */
50
51#endif
sound/firewire/Kconfig+13−0
@@ -11,6 +11,19 @@ config SND_FIREWIRE_LIB · 10 unmodified lines
11 tristate11 tristate
12 depends on SND_PCM12 depends on SND_PCM
13 13
14config SND_DICE
15 tristate "DICE devices (EXPERIMENTAL)"
16 select SND_HWDEP
17 select SND_PCM
18 select SND_FIREWIRE_LIB
19 help
20 Say Y here to include support for many FireWire audio interfaces
21 based on the DICE chip family (DICE-II/Jr/Mini) from TC Applied
22 Technologies.
23
24 To compile this driver as a module, choose M here: the module
25 will be called snd-dice.
26
14config SND_FIREWIRE_SPEAKERS27config SND_FIREWIRE_SPEAKERS
15 tristate "FireWire speakers"28 tristate "FireWire speakers"
16 select SND_PCM29 select SND_PCM
sound/firewire/Makefile+2−0
@@ -1,10 +1,12 @@
1snd-firewire-lib-objs := lib.o iso-resources.o packets-buffer.o \1snd-firewire-lib-objs := lib.o iso-resources.o packets-buffer.o \
2 fcp.o cmp.o amdtp.o2 fcp.o cmp.o amdtp.o
3snd-dice-objs := dice.o
3snd-firewire-speakers-objs := speakers.o4snd-firewire-speakers-objs := speakers.o
4snd-isight-objs := isight.o5snd-isight-objs := isight.o
5snd-scs1x-objs := scs1x.o6snd-scs1x-objs := scs1x.o
6 7
7obj-$(CONFIG_SND_FIREWIRE_LIB) += snd-firewire-lib.o8obj-$(CONFIG_SND_FIREWIRE_LIB) += snd-firewire-lib.o
9obj-$(CONFIG_SND_DICE) += snd-dice.o
8obj-$(CONFIG_SND_FIREWIRE_SPEAKERS) += snd-firewire-speakers.o10obj-$(CONFIG_SND_FIREWIRE_SPEAKERS) += snd-firewire-speakers.o
9obj-$(CONFIG_SND_ISIGHT) += snd-isight.o11obj-$(CONFIG_SND_ISIGHT) += snd-isight.o
10obj-$(CONFIG_SND_SCS1X) += snd-scs1x.o12obj-$(CONFIG_SND_SCS1X) += snd-scs1x.o
sound/firewire/dice.c+1008−0
@@ -0,0 +1,1008 @@
1/*
2 * TC Applied Technologies Digital Interface Communications Engine driver
3 *
4 * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
5 * Licensed under the terms of the GNU General Public License, version 2.
6 */
7
8#include <linux/delay.h>
9#include <linux/device.h>
10#include <linux/firewire.h>
11#include <linux/firewire-constants.h>
12#include <linux/module.h>
13#include <linux/mod_devicetable.h>
14#include <linux/mutex.h>
15#include <linux/slab.h>
16#include <sound/control.h>
17#include <sound/core.h>
18#include <sound/hwdep.h>
19#include <sound/initval.h>
20#include <sound/pcm.h>
21#include <sound/pcm_params.h>
22#include "amdtp.h"
23#include "iso-resources.h"
24#include "lib.h"
25
26#define DICE_PRIVATE_SPACE 0xffffe0000000uLL
27
28/* offset from DICE_PRIVATE_SPACE; offsets and sizes in quadlets */
29#define DICE_GLOBAL_OFFSET 0x00
30#define DICE_GLOBAL_SIZE 0x04
31#define DICE_TX_OFFSET 0x08
32#define DICE_TX_SIZE 0x0c
33#define DICE_RX_OFFSET 0x10
34#define DICE_RX_SIZE 0x14
35
36/* pointed to by DICE_GLOBAL_OFFSET */
37#define GLOBAL_OWNER 0x000
38#define OWNER_NO_OWNER 0xffff000000000000uLL
39#define OWNER_NODE_SHIFT 48
40#define GLOBAL_NOTIFICATION 0x008
41#define NOTIFY_RX_CFG_CHG 0x00000001
42#define NOTIFY_TX_CFG_CHG 0x00000002
43#define NOTIFY_DUP_ISOC 0x00000004
44#define NOTIFY_BW_ERR 0x00000008
45#define NOTIFY_LOCK_CHG 0x00000010
46#define NOTIFY_CLOCK_ACCEPTED 0x00000020
47#define NOTIFY_INTERFACE_CHG 0x00000040
48#define NOTIFY_MESSAGE 0x00100000
49#define GLOBAL_NICK_NAME 0x00c
50#define NICK_NAME_SIZE 64
51#define GLOBAL_CLOCK_SELECT 0x04c
52#define CLOCK_SOURCE_MASK 0x000000ff
53#define CLOCK_SOURCE_AES1 0x00000000
54#define CLOCK_SOURCE_AES2 0x00000001
55#define CLOCK_SOURCE_AES3 0x00000002
56#define CLOCK_SOURCE_AES4 0x00000003
57#define CLOCK_SOURCE_AES_ANY 0x00000004
58#define CLOCK_SOURCE_ADAT 0x00000005
59#define CLOCK_SOURCE_TDIF 0x00000006
60#define CLOCK_SOURCE_WC 0x00000007
61#define CLOCK_SOURCE_ARX1 0x00000008
62#define CLOCK_SOURCE_ARX2 0x00000009
63#define CLOCK_SOURCE_ARX3 0x0000000a
64#define CLOCK_SOURCE_ARX4 0x0000000b
65#define CLOCK_SOURCE_INTERNAL 0x0000000c
66#define CLOCK_RATE_MASK 0x0000ff00
67#define CLOCK_RATE_32000 0x00000000
68#define CLOCK_RATE_44100 0x00000100
69#define CLOCK_RATE_48000 0x00000200
70#define CLOCK_RATE_88200 0x00000300
71#define CLOCK_RATE_96000 0x00000400
72#define CLOCK_RATE_176400 0x00000500
73#define CLOCK_RATE_192000 0x00000600
74#define CLOCK_RATE_ANY_LOW 0x00000700
75#define CLOCK_RATE_ANY_MID 0x00000800
76#define CLOCK_RATE_ANY_HIGH 0x00000900
77#define CLOCK_RATE_NONE 0x00000a00
78#define GLOBAL_ENABLE 0x050
79#define ENABLE 0x00000001
80#define GLOBAL_STATUS 0x054
81#define STATUS_SOURCE_LOCKED 0x00000001
82#define STATUS_RATE_CONFLICT 0x00000002
83#define STATUS_NOMINAL_RATE_MASK 0x0000ff00
84#define GLOBAL_EXTENDED_STATUS 0x058
85#define EXT_STATUS_AES1_LOCKED 0x00000001
86#define EXT_STATUS_AES2_LOCKED 0x00000002
87#define EXT_STATUS_AES3_LOCKED 0x00000004
88#define EXT_STATUS_AES4_LOCKED 0x00000008
89#define EXT_STATUS_ADAT_LOCKED 0x00000010
90#define EXT_STATUS_TDIF_LOCKED 0x00000020
91#define EXT_STATUS_ARX1_LOCKED 0x00000040
92#define EXT_STATUS_ARX2_LOCKED 0x00000080
93#define EXT_STATUS_ARX3_LOCKED 0x00000100
94#define EXT_STATUS_ARX4_LOCKED 0x00000200
95#define EXT_STATUS_WC_LOCKED 0x00000400
96#define EXT_STATUS_AES1_SLIP 0x00010000
97#define EXT_STATUS_AES2_SLIP 0x00020000
98#define EXT_STATUS_AES3_SLIP 0x00040000
99#define EXT_STATUS_AES4_SLIP 0x00080000
100#define EXT_STATUS_ADAT_SLIP 0x00100000
101#define EXT_STATUS_TDIF_SLIP 0x00200000
102#define EXT_STATUS_ARX1_SLIP 0x00400000
103#define EXT_STATUS_ARX2_SLIP 0x00800000
104#define EXT_STATUS_ARX3_SLIP 0x01000000
105#define EXT_STATUS_ARX4_SLIP 0x02000000
106#define EXT_STATUS_WC_SLIP 0x04000000
107#define GLOBAL_SAMPLE_RATE 0x05c
108#define GLOBAL_VERSION 0x060
109#define GLOBAL_CLOCK_CAPABILITIES 0x064
110#define CLOCK_CAP_RATE_32000 0x00000001
111#define CLOCK_CAP_RATE_44100 0x00000002
112#define CLOCK_CAP_RATE_48000 0x00000004
113#define CLOCK_CAP_RATE_88200 0x00000008
114#define CLOCK_CAP_RATE_96000 0x00000010
115#define CLOCK_CAP_RATE_176400 0x00000020
116#define CLOCK_CAP_RATE_192000 0x00000040
117#define CLOCK_CAP_SOURCE_AES1 0x00010000
118#define CLOCK_CAP_SOURCE_AES2 0x00020000
119#define CLOCK_CAP_SOURCE_AES3 0x00040000
120#define CLOCK_CAP_SOURCE_AES4 0x00080000
121#define CLOCK_CAP_SOURCE_AES_ANY 0x00100000
122#define CLOCK_CAP_SOURCE_ADAT 0x00200000
123#define CLOCK_CAP_SOURCE_TDIF 0x00400000
124#define CLOCK_CAP_SOURCE_WC 0x00800000
125#define CLOCK_CAP_SOURCE_ARX1 0x01000000
126#define CLOCK_CAP_SOURCE_ARX2 0x02000000
127#define CLOCK_CAP_SOURCE_ARX3 0x04000000
128#define CLOCK_CAP_SOURCE_ARX4 0x08000000
129#define CLOCK_CAP_SOURCE_INTERNAL 0x10000000
130#define GLOBAL_CLOCK_SOURCE_NAMES 0x068
131#define CLOCK_SOURCE_NAMES_SIZE 256
132
133/* pointed to by DICE_TX_OFFSET */
134#define TX_NUMBER 0x000
135#define TX_SIZE 0x004
136/* repeated TX_NUMBER times, offset by TX_SIZE quadlets */
137#define TX_ISOCHRONOUS 0x008
138#define TX_NUMBER_AUDIO 0x00c
139#define TX_NUMBER_MIDI 0x010
140#define TX_SPEED 0x014
141#define TX_NAMES 0x018
142#define TX_NAMES_SIZE 256
143#define TX_AC3_CAPABILITIES 0x118
144#define TX_AC3_ENABLE 0x11c
145
146/* pointed to by DICE_RX_OFFSET */
147#define RX_NUMBER 0x000
148#define RX_SIZE 0x004
149/* repeated RX_NUMBER times, offset by RX_SIZE quadlets */
150#define RX_ISOCHRONOUS 0x008
151#define RX_SEQ_START 0x00c
152#define RX_NUMBER_AUDIO 0x010
153#define RX_NUMBER_MIDI 0x014
154#define RX_NAMES 0x018
155#define RX_NAMES_SIZE 256
156#define RX_AC3_CAPABILITIES 0x118
157#define RX_AC3_ENABLE 0x11c
158
159
160#define FIRMWARE_LOAD_SPACE 0xffffe0100000uLL
161
162/* offset from FIRMWARE_LOAD_SPACE */
163#define FIRMWARE_VERSION 0x000
164#define FIRMWARE_OPCODE 0x004
165#define OPCODE_MASK 0x00000fff
166#define OPCODE_GET_IMAGE_DESC 0x00000000
167#define OPCODE_DELETE_IMAGE 0x00000001
168#define OPCODE_CREATE_IMAGE 0x00000002
169#define OPCODE_UPLOAD 0x00000003
170#define OPCODE_UPLOAD_STAT 0x00000004
171#define OPCODE_RESET_IMAGE 0x00000005
172#define OPCODE_TEST_ACTION 0x00000006
173#define OPCODE_GET_RUNNING_IMAGE_VINFO 0x0000000a
174#define OPCODE_EXECUTE 0x80000000
175#define FIRMWARE_RETURN_STATUS 0x008
176#define FIRMWARE_PROGRESS 0x00c
177#define PROGRESS_CURR_MASK 0x00000fff
178#define PROGRESS_MAX_MASK 0x00fff000
179#define PROGRESS_TOUT_MASK 0x0f000000
180#define PROGRESS_FLAG 0x80000000
181#define FIRMWARE_CAPABILITIES 0x010
182#define FL_CAP_AUTOERASE 0x00000001
183#define FL_CAP_PROGRESS 0x00000002
184#define FIRMWARE_DATA 0x02c
185#define TEST_CMD_POKE 0x00000001
186#define TEST_CMD_PEEK 0x00000002
187#define CMD_GET_AVS_CNT 0x00000003
188#define CMD_CLR_AVS_CNT 0x00000004
189#define CMD_SET_MODE 0x00000005
190#define CMD_SET_MIDIBP 0x00000006
191#define CMD_GET_AVSPHASE 0x00000007
192#define CMD_ENABLE_BNC_SYNC 0x00000008
193#define CMD_PULSE_BNC_SYNC 0x00000009
194#define CMD_EMUL_SLOW_CMD 0x0000000a
195#define FIRMWARE_TEST_DELAY 0xfd8
196#define FIRMWARE_TEST_BUF 0xfdc
197
198
199/* EAP */
200#define EAP_PRIVATE_SPACE 0xffffe0200000uLL
201
202#define EAP_CAPABILITY_OFFSET 0x000
203#define EAP_CAPABILITY_SIZE 0x004
204/* ... */
205
206#define EAP_ROUTER_CAPS 0x000
207#define ROUTER_EXPOSED 0x00000001
208#define ROUTER_READ_ONLY 0x00000002
209#define ROUTER_FLASH 0x00000004
210#define MAX_ROUTES_MASK 0xffff0000
211#define EAP_MIXER_CAPS 0x004
212#define MIXER_EXPOSED 0x00000001
213#define MIXER_READ_ONLY 0x00000002
214#define MIXER_FLASH 0x00000004
215#define MIXER_IN_DEV_MASK 0x000000f0
216#define MIXER_OUT_DEV_MASK 0x00000f00
217#define MIXER_INPUTS_MASK 0x00ff0000
218#define MIXER_OUTPUTS_MASK 0xff000000
219#define EAP_GENERAL_CAPS 0x008
220#define GENERAL_STREAM_CONFIG 0x00000001
221#define GENERAL_FLASH 0x00000002
222#define GENERAL_PEAK 0x00000004
223#define GENERAL_MAX_TX_STREAMS_MASK 0x000000f0
224#define GENERAL_MAX_RX_STREAMS_MASK 0x00000f00
225#define GENERAL_STREAM_CONFIG_FLASH 0x00001000
226#define GENERAL_CHIP_MASK 0x00ff0000
227#define GENERAL_CHIP_DICE_II 0x00000000
228#define GENERAL_CHIP_DICE_MINI 0x00010000
229#define GENERAL_CHIP_DICE_JR 0x00020000
230
231
232struct dice {
233 struct snd_card *card;
234 struct fw_unit *unit;
235 struct mutex mutex;
236 unsigned int global_offset;
237 unsigned int rx_offset;
238 struct fw_address_handler notification_handler;
239 int owner_generation;
240 bool global_enabled;
241 bool stream_running;
242 struct snd_pcm_substream *pcm;
243 struct fw_iso_resources resources;
244 struct amdtp_out_stream stream;
245};
246
247MODULE_DESCRIPTION("DICE driver");
248MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
249MODULE_LICENSE("GPL v2");
250
251static inline u64 global_address(struct dice *dice, unsigned int offset)
252{
253 return DICE_PRIVATE_SPACE + dice->global_offset + offset;
254}
255
256// TODO: rx index
257static inline u64 rx_address(struct dice *dice, unsigned int offset)
258{
259 return DICE_PRIVATE_SPACE + dice->rx_offset + offset;
260}
261
262static int dice_owner_set(struct dice *dice)
263{
264 struct fw_device *device = fw_parent_device(dice->unit);
265 __be64 *buffer;
266 int rcode, err, errors = 0;
267
268 buffer = kmalloc(2 * 8, GFP_KERNEL);
269 if (!buffer)
270 return -ENOMEM;
271
272 for (;;) {
273 buffer[0] = cpu_to_be64(OWNER_NO_OWNER);
274 buffer[1] = cpu_to_be64(
275 ((u64)device->card->node_id << OWNER_NODE_SHIFT) |
276 dice->notification_handler.offset);
277
278 dice->owner_generation = device->generation;
279 smp_rmb(); /* node_id vs. generation */
280 rcode = fw_run_transaction(device->card,
281 TCODE_LOCK_COMPARE_SWAP,
282 device->node_id,
283 dice->owner_generation,
284 device->max_speed,
285 global_address(dice, GLOBAL_OWNER),
286 buffer, 2 * 8);
287
288 if (rcode == RCODE_COMPLETE) {
289 if (buffer[0] == cpu_to_be64(OWNER_NO_OWNER)) {
290 err = 0;
291 } else {
292 dev_err(&dice->unit->device,
293 "device is already in use\n");
294 err = -EBUSY;
295 }
296 break;
297 }
298 if (rcode_is_permanent_error(rcode) || ++errors >= 3) {
299 dev_err(&dice->unit->device,
300 "setting device owner failed: %s\n",
301 fw_rcode_string(rcode));
302 err = -EIO;
303 break;
304 }
305 msleep(20);
306 }
307
308 kfree(buffer);
309
310 return err;
311}
312
313static int dice_owner_update(struct dice *dice)
314{
315 struct fw_device *device = fw_parent_device(dice->unit);
316 __be64 *buffer;
317 int rcode, err, errors = 0;
318
319 if (dice->owner_generation == -1)
320 return 0;
321
322 buffer = kmalloc(2 * 8, GFP_KERNEL);
323 if (!buffer)
324 return -ENOMEM;
325
326 for (;;) {
327 buffer[0] = cpu_to_be64(OWNER_NO_OWNER);
328 buffer[1] = cpu_to_be64(
329 ((u64)device->card->node_id << OWNER_NODE_SHIFT) |
330 dice->notification_handler.offset);
331
332 dice->owner_generation = device->generation;
333 smp_rmb(); /* node_id vs. generation */
334 rcode = fw_run_transaction(device->card,
335 TCODE_LOCK_COMPARE_SWAP,
336 device->node_id,
337 dice->owner_generation,
338 device->max_speed,
339 global_address(dice, GLOBAL_OWNER),
340 buffer, 2 * 8);
341
342 if (rcode == RCODE_COMPLETE) {
343 if (buffer[0] == cpu_to_be64(OWNER_NO_OWNER)) {
344 err = 0;
345 } else {
346 dev_err(&dice->unit->device,
347 "device is already in use\n");
348 err = -EBUSY;
349 }
350 break;
351 }
352 if (rcode == RCODE_GENERATION) {
353 err = 0; /* try again later */
354 break;
355 }
356 if (rcode_is_permanent_error(rcode) || ++errors >= 3) {
357 dev_err(&dice->unit->device,
358 "setting device owner failed: %s\n",
359 fw_rcode_string(rcode));
360 err = -EIO;
361 break;
362 }
363 msleep(20);
364 }
365
366 kfree(buffer);
367
368 if (err < 0)
369 dice->owner_generation = -1;
370
371 return err;
372}
373
374static void dice_owner_clear(struct dice *dice)
375{
376 struct fw_device *device = fw_parent_device(dice->unit);
377 __be64 *buffer;
378 int rcode, errors = 0;
379
380 buffer = kmalloc(2 * 8, GFP_KERNEL);
381 if (!buffer)
382 return;
383
384 for (;;) {
385 buffer[0] = cpu_to_be64(
386 ((u64)device->card->node_id << OWNER_NODE_SHIFT) |
387 dice->notification_handler.offset);
388 buffer[1] = cpu_to_be64(OWNER_NO_OWNER);
389
390 rcode = fw_run_transaction(device->card,
391 TCODE_LOCK_COMPARE_SWAP,
392 device->node_id,
393 dice->owner_generation,
394 device->max_speed,
395 global_address(dice, GLOBAL_OWNER),
396 buffer, 2 * 8);
397
398 if (rcode == RCODE_COMPLETE)
399 break;
400 if (rcode == RCODE_GENERATION)
401 break;
402 if (rcode_is_permanent_error(rcode) || ++errors >= 3) {
403 dev_err(&dice->unit->device,
404 "clearing device owner failed: %s\n",
405 fw_rcode_string(rcode));
406 break;
407 }
408 msleep(20);
409 }
410
411 kfree(buffer);
412
413 dice->owner_generation = -1;
414}
415
416static int dice_enable_set(struct dice *dice)
417{
418 struct fw_device *device = fw_parent_device(dice->unit);
419 __be32 value;
420 int rcode, err, errors = 0;
421
422 value = cpu_to_be32(ENABLE);
423 for (;;) {
424 rcode = fw_run_transaction(device->card,
425 TCODE_WRITE_QUADLET_REQUEST,
426 device->node_id,
427 dice->owner_generation,
428 device->max_speed,
429 global_address(dice, GLOBAL_ENABLE),
430 &value, 4);
431 if (rcode == RCODE_COMPLETE) {
432 dice->global_enabled = true;
433 err = 0;
434 break;
435 }
436 if (rcode == RCODE_GENERATION) {
437 err = -EAGAIN;
438 break;
439 }
440 if (rcode_is_permanent_error(rcode) || ++errors >= 3) {
441 dev_err(&dice->unit->device,
442 "device enabling failed: %s\n",
443 fw_rcode_string(rcode));
444 err = -EIO;
445 break;
446 }
447 msleep(20);
448 }
449
450 return err;
451}
452
453static void dice_enable_clear(struct dice *dice)
454{
455 struct fw_device *device = fw_parent_device(dice->unit);
456 __be32 value;
457 int rcode, errors = 0;
458
459 value = 0;
460 for (;;) {
461 rcode = fw_run_transaction(device->card,
462 TCODE_WRITE_QUADLET_REQUEST,
463 device->node_id,
464 dice->owner_generation,
465 device->max_speed,
466 global_address(dice, GLOBAL_ENABLE),
467 &value, 4);
468 if (rcode == RCODE_COMPLETE ||
469 rcode == RCODE_GENERATION)
470 break;
471 if (rcode_is_permanent_error(rcode) || ++errors >= 3) {
472 dev_err(&dice->unit->device,
473 "device disabling failed: %s\n",
474 fw_rcode_string(rcode));
475 break;
476 }
477 msleep(20);
478 }
479 dice->global_enabled = false;
480}
481
482static void dice_notification(struct fw_card *card, struct fw_request *request,
483 int tcode, int destination, int source,
484 int generation, unsigned long long offset,
485 void *data, size_t length, void *callback_data)
486{
487 struct dice *dice = callback_data;
488
489 if (tcode != TCODE_WRITE_QUADLET_REQUEST) {
490 fw_send_response(card, request, RCODE_TYPE_ERROR);
491 return;
492 }
493 if ((offset & 3) != 0) {
494 fw_send_response(card, request, RCODE_ADDRESS_ERROR);
495 return;
496 }
497 dev_info(&dice->unit->device,
498 "notification: %08x\n", be32_to_cpup(data));
499 fw_send_response(card, request, RCODE_COMPLETE);
500}
501
502static int dice_open(struct snd_pcm_substream *substream)
503{
504 static const struct snd_pcm_hardware hardware = {
505 .info = SNDRV_PCM_INFO_MMAP |
506 SNDRV_PCM_INFO_MMAP_VALID |
507 SNDRV_PCM_INFO_BATCH |
508 SNDRV_PCM_INFO_INTERLEAVED |
509 SNDRV_PCM_INFO_BLOCK_TRANSFER,
510 .formats = AMDTP_OUT_PCM_FORMAT_BITS,
511 .rates = SNDRV_PCM_RATE_44100,
512 .rate_min = 44100,
513 .rate_max = 44100,
514 .buffer_bytes_max = 16 * 1024 * 1024,
515 .period_bytes_min = 1,
516 .period_bytes_max = UINT_MAX,
517 .periods_min = 1,
518 .periods_max = UINT_MAX,
519 };
520 struct dice *dice = substream->private_data;
521 struct snd_pcm_runtime *runtime = substream->runtime;
522 __be32 number_audio, number_midi;
523 int err;
524
525 err = snd_fw_transaction(dice->unit, TCODE_READ_QUADLET_REQUEST,
526 rx_address(dice, RX_NUMBER_AUDIO),
527 &number_audio, 4);
528 if (err < 0)
529 return err;
530 err = snd_fw_transaction(dice->unit, TCODE_READ_QUADLET_REQUEST,
531 rx_address(dice, RX_NUMBER_MIDI),
532 &number_midi, 4);
533 if (err < 0)
534 return err;
535
536 runtime->hw = hardware;
537 runtime->hw.channels_min = be32_to_cpu(number_audio);
538 runtime->hw.channels_max = be32_to_cpu(number_audio);
539
540 amdtp_out_stream_set_rate(&dice->stream, 44100);
541 amdtp_out_stream_set_pcm(&dice->stream, be32_to_cpu(number_audio));
542 amdtp_out_stream_set_midi(&dice->stream, be32_to_cpu(number_midi));
543
544 err = snd_pcm_hw_constraint_minmax(runtime,
545 SNDRV_PCM_HW_PARAM_PERIOD_TIME,
546 5000, 8192000);
547 if (err < 0)
548 return err;
549
550 err = snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
551 if (err < 0)
552 return err;
553
554 return 0;
555}
556
557static int dice_close(struct snd_pcm_substream *substream)
558{
559 return 0;
560}
561
562static void dice_stop_stream(struct dice *dice)
563{
564 __be32 channel;
565
566 if (dice->stream_running) {
567 dice_enable_clear(dice);
568
569 amdtp_out_stream_stop(&dice->stream);
570
571 channel = cpu_to_be32((u32)-1);
572 snd_fw_transaction(dice->unit, TCODE_WRITE_QUADLET_REQUEST,
573 rx_address(dice, RX_ISOCHRONOUS),
574 &channel, 4);
575
576 fw_iso_resources_free(&dice->resources);
577
578 dice->stream_running = false;
579 }
580}
581
582static int dice_hw_params(struct snd_pcm_substream *substream,
583 struct snd_pcm_hw_params *hw_params)
584{
585 struct dice *dice = substream->private_data;
586 int err;
587
588 mutex_lock(&dice->mutex);
589 dice_stop_stream(dice);
590 mutex_unlock(&dice->mutex);
591
592 err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
593 params_buffer_bytes(hw_params));
594 if (err < 0)
595 goto error;
596
597 amdtp_out_stream_set_pcm_format(&dice->stream,
598 params_format(hw_params));
599
600 return 0;
601
602error:
603 return err;
604}
605
606static int dice_hw_free(struct snd_pcm_substream *substream)
607{
608 struct dice *dice = substream->private_data;
609
610 mutex_lock(&dice->mutex);
611 dice_stop_stream(dice);
612 mutex_unlock(&dice->mutex);
613
614 return snd_pcm_lib_free_vmalloc_buffer(substream);
615}
616
617static int dice_prepare(struct snd_pcm_substream *substream)
618{
619 struct dice *dice = substream->private_data;
620 struct fw_device *device = fw_parent_device(dice->unit);
621 __be32 channel;
622 int err;
623
624 mutex_lock(&dice->mutex);
625
626 if (amdtp_out_streaming_error(&dice->stream))
627 dice_stop_stream(dice);
628
629 if (!dice->stream_running) {
630 err = fw_iso_resources_allocate(&dice->resources,
631 amdtp_out_stream_get_max_payload(&dice->stream),
632 device->max_speed);
633 if (err < 0)
634 goto error;
635
636 //TODO: RX_SEQ_START
637 channel = cpu_to_be32(dice->resources.channel);
638 err = snd_fw_transaction(dice->unit,
639 TCODE_WRITE_QUADLET_REQUEST,
640 rx_address(dice, RX_ISOCHRONOUS),
641 &channel, 4);
642 if (err < 0)
643 goto err_resources;
644
645 err = amdtp_out_stream_start(&dice->stream,
646 dice->resources.channel,
647 device->max_speed);
648 if (err < 0)
649 goto err_resources;
650
651 err = dice_enable_set(dice);
652 if (err < 0)
653 goto err_stream;
654
655 dice->stream_running = true;
656 }
657
658 mutex_unlock(&dice->mutex);
659
660 amdtp_out_stream_pcm_prepare(&dice->stream);
661
662 return 0;
663
664err_stream:
665 amdtp_out_stream_stop(&dice->stream);
666err_resources:
667 fw_iso_resources_free(&dice->resources);
668error:
669 mutex_unlock(&dice->mutex);
670
671 return err;
672}
673
674static int dice_trigger(struct snd_pcm_substream *substream, int cmd)
675{
676 struct dice *dice = substream->private_data;
677 struct snd_pcm_substream *pcm;
678
679 switch (cmd) {
680 case SNDRV_PCM_TRIGGER_START:
681 pcm = substream;
682 break;
683 case SNDRV_PCM_TRIGGER_STOP:
684 pcm = NULL;
685 break;
686 default:
687 return -EINVAL;
688 }
689 amdtp_out_stream_pcm_trigger(&dice->stream, pcm);
690
691 return 0;
692}
693
694static snd_pcm_uframes_t dice_pointer(struct snd_pcm_substream *substream)
695{
696 struct dice *dice = substream->private_data;
697
698 return amdtp_out_stream_pcm_pointer(&dice->stream);
699}
700
701static int dice_create_pcm(struct dice *dice)
702{
703 static struct snd_pcm_ops ops = {
704 .open = dice_open,
705 .close = dice_close,
706 .ioctl = snd_pcm_lib_ioctl,
707 .hw_params = dice_hw_params,
708 .hw_free = dice_hw_free,
709 .prepare = dice_prepare,
710 .trigger = dice_trigger,
711 .pointer = dice_pointer,
712 .page = snd_pcm_lib_get_vmalloc_page,
713 .mmap = snd_pcm_lib_mmap_vmalloc,
714 };
715 __be32 clock;
716 struct snd_pcm *pcm;
717 int err;
718
719 clock = cpu_to_be32(CLOCK_SOURCE_ARX1 | CLOCK_RATE_44100);
720 err = snd_fw_transaction(dice->unit, TCODE_WRITE_QUADLET_REQUEST,
721 global_address(dice, GLOBAL_CLOCK_SELECT),
722 &clock, 4);
723 if (err < 0)
724 return err;
725
726 err = snd_pcm_new(dice->card, "DICE", 0, 1, 0, &pcm);
727 if (err < 0)
728 return err;
729 pcm->private_data = dice;
730 strcpy(pcm->name, dice->card->shortname);
731 dice->pcm = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
732 dice->pcm->ops = &ops;
733
734 return 0;
735}
736
737// TODO: implement these
738
739static long dice_hwdep_read(struct snd_hwdep *hwdep, char __user *buf,
740 long count, loff_t *offset)
741{
742 return -EIO;
743}
744
745static int dice_hwdep_open(struct snd_hwdep *hwdep, struct file *file)
746{
747 return -EIO;
748}
749
750static int dice_hwdep_release(struct snd_hwdep *hwdep, struct file *file)
751{
752 return 0;
753}
754
755static unsigned int dice_hwdep_poll(struct snd_hwdep *hwdep, struct file *file,
756 poll_table *wait)
757{
758 return POLLERR | POLLHUP;
759}
760
761static int dice_hwdep_ioctl(struct snd_hwdep *hwdep, struct file *file,
762 unsigned int cmd, unsigned long arg)
763{
764 return -EIO;
765}
766
767static int dice_create_hwdep(struct dice *dice)
768{
769 static const struct snd_hwdep_ops ops = {
770 .read = dice_hwdep_read,
771 .open = dice_hwdep_open,
772 .release = dice_hwdep_release,
773 .poll = dice_hwdep_poll,
774 .ioctl = dice_hwdep_ioctl,
775 .ioctl_compat = dice_hwdep_ioctl,
776 };
777 struct snd_hwdep *hwdep;
778 int err;
779
780 err = snd_hwdep_new(dice->card, "DICE", 0, &hwdep);
781 if (err < 0)
782 return err;
783 strcpy(hwdep->name, "DICE");
784 hwdep->iface = SNDRV_HWDEP_IFACE_FW_DICE;
785 hwdep->ops = ops;
786 hwdep->private_data = dice;
787 hwdep->exclusive = true;
788
789 return 0;
790}
791
792static void dice_card_free(struct snd_card *card)
793{
794 struct dice *dice = card->private_data;
795
796 amdtp_out_stream_destroy(&dice->stream);
797 fw_core_remove_address_handler(&dice->notification_handler);
798 mutex_destroy(&dice->mutex);
799}
800
801static int dice_init_offsets(struct dice *dice)
802{
803 __be32 pointers[6];
804 unsigned int global_size, rx_size;
805 int err;
806
807 err = snd_fw_transaction(dice->unit, TCODE_READ_BLOCK_REQUEST,
808 DICE_PRIVATE_SPACE, &pointers, 6 * 4);
809 if (err < 0)
810 return err;
811
812 dice->global_offset = be32_to_cpu(pointers[0]) * 4;
813 global_size = be32_to_cpu(pointers[1]);
814 dice->rx_offset = be32_to_cpu(pointers[4]) * 4;
815 rx_size = be32_to_cpu(pointers[5]);
816
817 /* some sanity checks to ensure that we actually have a DICE */
818 if (dice->global_offset < 10 * 4 || global_size < 0x168 / 4 ||
819 dice->rx_offset < 10 * 4 || rx_size < 0x120 / 4) {
820 dev_err(&dice->unit->device, "invalid register pointers\n");
821 return -ENXIO;
822 }
823
824 return 0;
825}
826
827static void dice_card_strings(struct dice *dice)
828{
829 struct snd_card *card = dice->card;
830 struct fw_device *dev = fw_parent_device(dice->unit);
831 char vendor[32], model[32];
832 unsigned int i;
833 int err;
834
835 strcpy(card->driver, "DICE");
836
837 strcpy(card->shortname, "DICE");
838 BUILD_BUG_ON(NICK_NAME_SIZE < sizeof(card->shortname));
839 err = snd_fw_transaction(dice->unit, TCODE_READ_BLOCK_REQUEST,
840 global_address(dice, GLOBAL_NICK_NAME),
841 card->shortname, sizeof(card->shortname));
842 if (err >= 0) {
843 /* DICE strings are returned in "always-wrong" endianness */
844 BUILD_BUG_ON(sizeof(card->shortname) % 4 != 0);
845 for (i = 0; i < sizeof(card->shortname); i += 4)
846 swab32s((u32 *)&card->shortname[i]);
847 card->shortname[sizeof(card->shortname) - 1] = '\0';
848 }
849
850 strcpy(vendor, "?");
851 fw_csr_string(dev->config_rom + 5, CSR_VENDOR, vendor, sizeof(vendor));
852 strcpy(model, "?");
853 fw_csr_string(dice->unit->directory, CSR_MODEL, model, sizeof(model));
854 snprintf(card->longname, sizeof(card->longname),
855 "%s %s, GUID %08x%08x at %s, S%d",
856 vendor, model, dev->config_rom[3], dev->config_rom[4],
857 dev_name(&dice->unit->device), 100 << dev->max_speed);
858
859 strcpy(card->mixername, "DICE");
860}
861
862static int dice_probe(struct fw_unit *unit, const struct ieee1394_device_id *id)
863{
864 struct snd_card *card;
865 struct dice *dice;
866 int err;
867
868 err = snd_card_create(-1, NULL, THIS_MODULE, sizeof(*dice), &card);
869 if (err < 0)
870 return err;
871 snd_card_set_dev(card, &unit->device);
872
873 dice = card->private_data;
874 dice->card = card;
875 mutex_init(&dice->mutex);
876 dice->unit = unit;
877
878 err = dice_init_offsets(dice);
879 if (err < 0)
880 goto err_mutex;
881
882 dice->notification_handler.length = 4;
883 dice->notification_handler.address_callback = dice_notification;
884 dice->notification_handler.callback_data = dice;
885 err = fw_core_add_address_handler(&dice->notification_handler,
886 &fw_high_memory_region);
887 if (err < 0)
888 goto err_mutex;
889
890 err = fw_iso_resources_init(&dice->resources, unit);
891 if (err < 0)
892 goto err_notification_handler;
893 dice->resources.channels_mask = 0x00000000ffffffffuLL;
894
895 err = amdtp_out_stream_init(&dice->stream, unit, CIP_NONBLOCKING);
896 if (err < 0)
897 goto err_resources;
898
899 err = dice_owner_set(dice);
900 if (err < 0)
901 goto err_stream;
902
903 card->private_free = dice_card_free;
904
905 dice_card_strings(dice);
906
907 err = dice_create_pcm(dice);
908 if (err < 0)
909 goto error;
910
911 err = dice_create_hwdep(dice);
912 if (err < 0)
913 goto error;
914
915 err = snd_card_register(card);
916 if (err < 0)
917 goto error;
918
919 dev_set_drvdata(&unit->device, dice);
920
921 return 0;
922
923err_stream:
924 amdtp_out_stream_destroy(&dice->stream);
925err_resources:
926 fw_iso_resources_destroy(&dice->resources);
927err_notification_handler:
928 fw_core_remove_address_handler(&dice->notification_handler);
929err_mutex:
930 mutex_destroy(&dice->mutex);
931error:
932 snd_card_free(card);
933 return err;
934}
935
936static void dice_remove(struct fw_unit *unit)
937{
938 struct dice *dice = dev_get_drvdata(&unit->device);
939
940 snd_card_disconnect(dice->card);
941
942 mutex_lock(&dice->mutex);
943 amdtp_out_stream_pcm_abort(&dice->stream);
944 dice_stop_stream(dice);
945 dice_owner_clear(dice);
946 mutex_unlock(&dice->mutex);
947
948 snd_card_free_when_closed(dice->card);
949}
950
951static void dice_bus_reset(struct fw_unit *unit)
952{
953 struct dice *dice = dev_get_drvdata(&unit->device);
954
955 mutex_lock(&dice->mutex);
956 /*
957 * XXX is the following true?
958 * On a bus reset, the DICE firmware disables streaming and then goes
959 * off contemplating its own navel for hundreds of milliseconds before
960 * it can react to any of our attempts to reenable streaming. This
961 * means that we lose synchronization anyway, so we force our streams
962 * to stop so that the application can restart them in an orderly
963 * manner.
964 */
965 dice_owner_update(dice);
966 amdtp_out_stream_pcm_abort(&dice->stream);
967 dice_stop_stream(dice);
968 mutex_unlock(&dice->mutex);
969}
970
971#define TC_OUI 0x000166
972#define DICE_INTERFACE 0x000001
973
974static const struct ieee1394_device_id dice_id_table[] = {
975 {
976 .match_flags = IEEE1394_MATCH_SPECIFIER_ID |
977 IEEE1394_MATCH_VERSION,
978 .specifier_id = TC_OUI,
979 .version = DICE_INTERFACE,
980 },
981 { }
982};
983MODULE_DEVICE_TABLE(ieee1394, dice_id_table);
984
985static struct fw_driver dice_driver = {
986 .driver = {
987 .owner = THIS_MODULE,
988 .name = KBUILD_MODNAME,
989 .bus = &fw_bus_type,
990 },
991 .probe = dice_probe,
992 .update = dice_bus_reset,
993 .remove = dice_remove,
994 .id_table = dice_id_table,
995};
996
997static int __init alsa_dice_init(void)
998{
999 return driver_register(&dice_driver.driver);
1000}
1001
1002static void __exit alsa_dice_exit(void)
1003{
1004 driver_unregister(&dice_driver.driver);
1005}
1006
1007module_init(alsa_dice_init);
1008module_exit(alsa_dice_exit);

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