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Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm
[deliverable/linux.git] / sound / pci / pcxhr / pcxhr_core.c
1 /*
2 * Driver for Digigram pcxhr compatible soundcards
3 *
4 * low level interface with interrupt and message handling implementation
5 *
6 * Copyright (c) 2004 by Digigram <alsa@digigram.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 */
22
23 #include <linux/delay.h>
24 #include <linux/firmware.h>
25 #include <linux/interrupt.h>
26 #include <linux/pci.h>
27 #include <linux/io.h>
28 #include <sound/core.h>
29 #include "pcxhr.h"
30 #include "pcxhr_mixer.h"
31 #include "pcxhr_hwdep.h"
32 #include "pcxhr_core.h"
33
34
35 /* registers used on the PLX (port 1) */
36 #define PCXHR_PLX_OFFSET_MIN 0x40
37 #define PCXHR_PLX_MBOX0 0x40
38 #define PCXHR_PLX_MBOX1 0x44
39 #define PCXHR_PLX_MBOX2 0x48
40 #define PCXHR_PLX_MBOX3 0x4C
41 #define PCXHR_PLX_MBOX4 0x50
42 #define PCXHR_PLX_MBOX5 0x54
43 #define PCXHR_PLX_MBOX6 0x58
44 #define PCXHR_PLX_MBOX7 0x5C
45 #define PCXHR_PLX_L2PCIDB 0x64
46 #define PCXHR_PLX_IRQCS 0x68
47 #define PCXHR_PLX_CHIPSC 0x6C
48
49 /* registers used on the DSP (port 2) */
50 #define PCXHR_DSP_ICR 0x00
51 #define PCXHR_DSP_CVR 0x04
52 #define PCXHR_DSP_ISR 0x08
53 #define PCXHR_DSP_IVR 0x0C
54 #define PCXHR_DSP_RXH 0x14
55 #define PCXHR_DSP_TXH 0x14
56 #define PCXHR_DSP_RXM 0x18
57 #define PCXHR_DSP_TXM 0x18
58 #define PCXHR_DSP_RXL 0x1C
59 #define PCXHR_DSP_TXL 0x1C
60 #define PCXHR_DSP_RESET 0x20
61 #define PCXHR_DSP_OFFSET_MAX 0x20
62
63 /* access to the card */
64 #define PCXHR_PLX 1
65 #define PCXHR_DSP 2
66
67 #if (PCXHR_DSP_OFFSET_MAX > PCXHR_PLX_OFFSET_MIN)
68 #undef PCXHR_REG_TO_PORT(x)
69 #else
70 #define PCXHR_REG_TO_PORT(x) ((x)>PCXHR_DSP_OFFSET_MAX ? PCXHR_PLX : PCXHR_DSP)
71 #endif
72 #define PCXHR_INPB(mgr,x) inb((mgr)->port[PCXHR_REG_TO_PORT(x)] + (x))
73 #define PCXHR_INPL(mgr,x) inl((mgr)->port[PCXHR_REG_TO_PORT(x)] + (x))
74 #define PCXHR_OUTPB(mgr,x,data) outb((data), (mgr)->port[PCXHR_REG_TO_PORT(x)] + (x))
75 #define PCXHR_OUTPL(mgr,x,data) outl((data), (mgr)->port[PCXHR_REG_TO_PORT(x)] + (x))
76 /* attention : access the PCXHR_DSP_* registers with inb and outb only ! */
77
78 /* params used with PCXHR_PLX_MBOX0 */
79 #define PCXHR_MBOX0_HF5 (1 << 0)
80 #define PCXHR_MBOX0_HF4 (1 << 1)
81 #define PCXHR_MBOX0_BOOT_HERE (1 << 23)
82 /* params used with PCXHR_PLX_IRQCS */
83 #define PCXHR_IRQCS_ENABLE_PCIIRQ (1 << 8)
84 #define PCXHR_IRQCS_ENABLE_PCIDB (1 << 9)
85 #define PCXHR_IRQCS_ACTIVE_PCIDB (1 << 13)
86 /* params used with PCXHR_PLX_CHIPSC */
87 #define PCXHR_CHIPSC_INIT_VALUE 0x100D767E
88 #define PCXHR_CHIPSC_RESET_XILINX (1 << 16)
89 #define PCXHR_CHIPSC_GPI_USERI (1 << 17)
90 #define PCXHR_CHIPSC_DATA_CLK (1 << 24)
91 #define PCXHR_CHIPSC_DATA_IN (1 << 26)
92
93 /* params used with PCXHR_DSP_ICR */
94 #define PCXHR_ICR_HI08_RREQ 0x01
95 #define PCXHR_ICR_HI08_TREQ 0x02
96 #define PCXHR_ICR_HI08_HDRQ 0x04
97 #define PCXHR_ICR_HI08_HF0 0x08
98 #define PCXHR_ICR_HI08_HF1 0x10
99 #define PCXHR_ICR_HI08_HLEND 0x20
100 #define PCXHR_ICR_HI08_INIT 0x80
101 /* params used with PCXHR_DSP_CVR */
102 #define PCXHR_CVR_HI08_HC 0x80
103 /* params used with PCXHR_DSP_ISR */
104 #define PCXHR_ISR_HI08_RXDF 0x01
105 #define PCXHR_ISR_HI08_TXDE 0x02
106 #define PCXHR_ISR_HI08_TRDY 0x04
107 #define PCXHR_ISR_HI08_ERR 0x08
108 #define PCXHR_ISR_HI08_CHK 0x10
109 #define PCXHR_ISR_HI08_HREQ 0x80
110
111
112 /* constants used for delay in msec */
113 #define PCXHR_WAIT_DEFAULT 2
114 #define PCXHR_WAIT_IT 25
115 #define PCXHR_WAIT_IT_EXTRA 65
116
117 /*
118 * pcxhr_check_reg_bit - wait for the specified bit is set/reset on a register
119 * @reg: register to check
120 * @mask: bit mask
121 * @bit: resultant bit to be checked
122 * @time: time-out of loop in msec
123 *
124 * returns zero if a bit matches, or a negative error code.
125 */
126 static int pcxhr_check_reg_bit(struct pcxhr_mgr *mgr, unsigned int reg,
127 unsigned char mask, unsigned char bit, int time,
128 unsigned char* read)
129 {
130 int i = 0;
131 unsigned long end_time = jiffies + (time * HZ + 999) / 1000;
132 do {
133 *read = PCXHR_INPB(mgr, reg);
134 if ((*read & mask) == bit) {
135 if (i > 100)
136 dev_dbg(&mgr->pci->dev,
137 "ATTENTION! check_reg(%x) loopcount=%d\n",
138 reg, i);
139 return 0;
140 }
141 i++;
142 } while (time_after_eq(end_time, jiffies));
143 dev_err(&mgr->pci->dev,
144 "pcxhr_check_reg_bit: timeout, reg=%x, mask=0x%x, val=%x\n",
145 reg, mask, *read);
146 return -EIO;
147 }
148
149 /* constants used with pcxhr_check_reg_bit() */
150 #define PCXHR_TIMEOUT_DSP 200
151
152
153 #define PCXHR_MASK_EXTRA_INFO 0x0000FE
154 #define PCXHR_MASK_IT_HF0 0x000100
155 #define PCXHR_MASK_IT_HF1 0x000200
156 #define PCXHR_MASK_IT_NO_HF0_HF1 0x000400
157 #define PCXHR_MASK_IT_MANAGE_HF5 0x000800
158 #define PCXHR_MASK_IT_WAIT 0x010000
159 #define PCXHR_MASK_IT_WAIT_EXTRA 0x020000
160
161 #define PCXHR_IT_SEND_BYTE_XILINX (0x0000003C | PCXHR_MASK_IT_HF0)
162 #define PCXHR_IT_TEST_XILINX (0x0000003C | PCXHR_MASK_IT_HF1 | \
163 PCXHR_MASK_IT_MANAGE_HF5)
164 #define PCXHR_IT_DOWNLOAD_BOOT (0x0000000C | PCXHR_MASK_IT_HF1 | \
165 PCXHR_MASK_IT_MANAGE_HF5 | \
166 PCXHR_MASK_IT_WAIT)
167 #define PCXHR_IT_RESET_BOARD_FUNC (0x0000000C | PCXHR_MASK_IT_HF0 | \
168 PCXHR_MASK_IT_MANAGE_HF5 | \
169 PCXHR_MASK_IT_WAIT_EXTRA)
170 #define PCXHR_IT_DOWNLOAD_DSP (0x0000000C | \
171 PCXHR_MASK_IT_MANAGE_HF5 | \
172 PCXHR_MASK_IT_WAIT)
173 #define PCXHR_IT_DEBUG (0x0000005A | PCXHR_MASK_IT_NO_HF0_HF1)
174 #define PCXHR_IT_RESET_SEMAPHORE (0x0000005C | PCXHR_MASK_IT_NO_HF0_HF1)
175 #define PCXHR_IT_MESSAGE (0x00000074 | PCXHR_MASK_IT_NO_HF0_HF1)
176 #define PCXHR_IT_RESET_CHK (0x00000076 | PCXHR_MASK_IT_NO_HF0_HF1)
177 #define PCXHR_IT_UPDATE_RBUFFER (0x00000078 | PCXHR_MASK_IT_NO_HF0_HF1)
178
179 static int pcxhr_send_it_dsp(struct pcxhr_mgr *mgr,
180 unsigned int itdsp, int atomic)
181 {
182 int err;
183 unsigned char reg;
184
185 if (itdsp & PCXHR_MASK_IT_MANAGE_HF5) {
186 /* clear hf5 bit */
187 PCXHR_OUTPL(mgr, PCXHR_PLX_MBOX0,
188 PCXHR_INPL(mgr, PCXHR_PLX_MBOX0) &
189 ~PCXHR_MBOX0_HF5);
190 }
191 if ((itdsp & PCXHR_MASK_IT_NO_HF0_HF1) == 0) {
192 reg = (PCXHR_ICR_HI08_RREQ |
193 PCXHR_ICR_HI08_TREQ |
194 PCXHR_ICR_HI08_HDRQ);
195 if (itdsp & PCXHR_MASK_IT_HF0)
196 reg |= PCXHR_ICR_HI08_HF0;
197 if (itdsp & PCXHR_MASK_IT_HF1)
198 reg |= PCXHR_ICR_HI08_HF1;
199 PCXHR_OUTPB(mgr, PCXHR_DSP_ICR, reg);
200 }
201 reg = (unsigned char)(((itdsp & PCXHR_MASK_EXTRA_INFO) >> 1) |
202 PCXHR_CVR_HI08_HC);
203 PCXHR_OUTPB(mgr, PCXHR_DSP_CVR, reg);
204 if (itdsp & PCXHR_MASK_IT_WAIT) {
205 if (atomic)
206 mdelay(PCXHR_WAIT_IT);
207 else
208 msleep(PCXHR_WAIT_IT);
209 }
210 if (itdsp & PCXHR_MASK_IT_WAIT_EXTRA) {
211 if (atomic)
212 mdelay(PCXHR_WAIT_IT_EXTRA);
213 else
214 msleep(PCXHR_WAIT_IT);
215 }
216 /* wait for CVR_HI08_HC == 0 */
217 err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_CVR, PCXHR_CVR_HI08_HC, 0,
218 PCXHR_TIMEOUT_DSP, &reg);
219 if (err) {
220 dev_err(&mgr->pci->dev, "pcxhr_send_it_dsp : TIMEOUT CVR\n");
221 return err;
222 }
223 if (itdsp & PCXHR_MASK_IT_MANAGE_HF5) {
224 /* wait for hf5 bit */
225 err = pcxhr_check_reg_bit(mgr, PCXHR_PLX_MBOX0,
226 PCXHR_MBOX0_HF5,
227 PCXHR_MBOX0_HF5,
228 PCXHR_TIMEOUT_DSP,
229 &reg);
230 if (err) {
231 dev_err(&mgr->pci->dev,
232 "pcxhr_send_it_dsp : TIMEOUT HF5\n");
233 return err;
234 }
235 }
236 return 0; /* retry not handled here */
237 }
238
239 void pcxhr_reset_xilinx_com(struct pcxhr_mgr *mgr)
240 {
241 /* reset second xilinx */
242 PCXHR_OUTPL(mgr, PCXHR_PLX_CHIPSC,
243 PCXHR_CHIPSC_INIT_VALUE & ~PCXHR_CHIPSC_RESET_XILINX);
244 }
245
246 static void pcxhr_enable_irq(struct pcxhr_mgr *mgr, int enable)
247 {
248 unsigned int reg = PCXHR_INPL(mgr, PCXHR_PLX_IRQCS);
249 /* enable/disable interrupts */
250 if (enable)
251 reg |= (PCXHR_IRQCS_ENABLE_PCIIRQ | PCXHR_IRQCS_ENABLE_PCIDB);
252 else
253 reg &= ~(PCXHR_IRQCS_ENABLE_PCIIRQ | PCXHR_IRQCS_ENABLE_PCIDB);
254 PCXHR_OUTPL(mgr, PCXHR_PLX_IRQCS, reg);
255 }
256
257 void pcxhr_reset_dsp(struct pcxhr_mgr *mgr)
258 {
259 /* disable interrupts */
260 pcxhr_enable_irq(mgr, 0);
261
262 /* let's reset the DSP */
263 PCXHR_OUTPB(mgr, PCXHR_DSP_RESET, 0);
264 msleep( PCXHR_WAIT_DEFAULT ); /* wait 2 msec */
265 PCXHR_OUTPB(mgr, PCXHR_DSP_RESET, 3);
266 msleep( PCXHR_WAIT_DEFAULT ); /* wait 2 msec */
267
268 /* reset mailbox */
269 PCXHR_OUTPL(mgr, PCXHR_PLX_MBOX0, 0);
270 }
271
272 void pcxhr_enable_dsp(struct pcxhr_mgr *mgr)
273 {
274 /* enable interrupts */
275 pcxhr_enable_irq(mgr, 1);
276 }
277
278 /*
279 * load the xilinx image
280 */
281 int pcxhr_load_xilinx_binary(struct pcxhr_mgr *mgr,
282 const struct firmware *xilinx, int second)
283 {
284 unsigned int i;
285 unsigned int chipsc;
286 unsigned char data;
287 unsigned char mask;
288 const unsigned char *image;
289
290 /* test first xilinx */
291 chipsc = PCXHR_INPL(mgr, PCXHR_PLX_CHIPSC);
292 /* REV01 cards do not support the PCXHR_CHIPSC_GPI_USERI bit anymore */
293 /* this bit will always be 1;
294 * no possibility to test presence of first xilinx
295 */
296 if(second) {
297 if ((chipsc & PCXHR_CHIPSC_GPI_USERI) == 0) {
298 dev_err(&mgr->pci->dev, "error loading first xilinx\n");
299 return -EINVAL;
300 }
301 /* activate second xilinx */
302 chipsc |= PCXHR_CHIPSC_RESET_XILINX;
303 PCXHR_OUTPL(mgr, PCXHR_PLX_CHIPSC, chipsc);
304 msleep( PCXHR_WAIT_DEFAULT ); /* wait 2 msec */
305 }
306 image = xilinx->data;
307 for (i = 0; i < xilinx->size; i++, image++) {
308 data = *image;
309 mask = 0x80;
310 while (mask) {
311 chipsc &= ~(PCXHR_CHIPSC_DATA_CLK |
312 PCXHR_CHIPSC_DATA_IN);
313 if (data & mask)
314 chipsc |= PCXHR_CHIPSC_DATA_IN;
315 PCXHR_OUTPL(mgr, PCXHR_PLX_CHIPSC, chipsc);
316 chipsc |= PCXHR_CHIPSC_DATA_CLK;
317 PCXHR_OUTPL(mgr, PCXHR_PLX_CHIPSC, chipsc);
318 mask >>= 1;
319 }
320 /* don't take too much time in this loop... */
321 cond_resched();
322 }
323 chipsc &= ~(PCXHR_CHIPSC_DATA_CLK | PCXHR_CHIPSC_DATA_IN);
324 PCXHR_OUTPL(mgr, PCXHR_PLX_CHIPSC, chipsc);
325 /* wait 2 msec (time to boot the xilinx before any access) */
326 msleep( PCXHR_WAIT_DEFAULT );
327 return 0;
328 }
329
330 /*
331 * send an executable file to the DSP
332 */
333 static int pcxhr_download_dsp(struct pcxhr_mgr *mgr, const struct firmware *dsp)
334 {
335 int err;
336 unsigned int i;
337 unsigned int len;
338 const unsigned char *data;
339 unsigned char dummy;
340 /* check the length of boot image */
341 if (dsp->size <= 0)
342 return -EINVAL;
343 if (dsp->size % 3)
344 return -EINVAL;
345 if (snd_BUG_ON(!dsp->data))
346 return -EINVAL;
347 /* transfert data buffer from PC to DSP */
348 for (i = 0; i < dsp->size; i += 3) {
349 data = dsp->data + i;
350 if (i == 0) {
351 /* test data header consistency */
352 len = (unsigned int)((data[0]<<16) +
353 (data[1]<<8) +
354 data[2]);
355 if (len && (dsp->size != (len + 2) * 3))
356 return -EINVAL;
357 }
358 /* wait DSP ready for new transfer */
359 err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR,
360 PCXHR_ISR_HI08_TRDY,
361 PCXHR_ISR_HI08_TRDY,
362 PCXHR_TIMEOUT_DSP, &dummy);
363 if (err) {
364 dev_err(&mgr->pci->dev,
365 "dsp loading error at position %d\n", i);
366 return err;
367 }
368 /* send host data */
369 PCXHR_OUTPB(mgr, PCXHR_DSP_TXH, data[0]);
370 PCXHR_OUTPB(mgr, PCXHR_DSP_TXM, data[1]);
371 PCXHR_OUTPB(mgr, PCXHR_DSP_TXL, data[2]);
372
373 /* don't take too much time in this loop... */
374 cond_resched();
375 }
376 /* give some time to boot the DSP */
377 msleep(PCXHR_WAIT_DEFAULT);
378 return 0;
379 }
380
381 /*
382 * load the eeprom image
383 */
384 int pcxhr_load_eeprom_binary(struct pcxhr_mgr *mgr,
385 const struct firmware *eeprom)
386 {
387 int err;
388 unsigned char reg;
389
390 /* init value of the ICR register */
391 reg = PCXHR_ICR_HI08_RREQ | PCXHR_ICR_HI08_TREQ | PCXHR_ICR_HI08_HDRQ;
392 if (PCXHR_INPL(mgr, PCXHR_PLX_MBOX0) & PCXHR_MBOX0_BOOT_HERE) {
393 /* no need to load the eeprom binary,
394 * but init the HI08 interface
395 */
396 PCXHR_OUTPB(mgr, PCXHR_DSP_ICR, reg | PCXHR_ICR_HI08_INIT);
397 msleep(PCXHR_WAIT_DEFAULT);
398 PCXHR_OUTPB(mgr, PCXHR_DSP_ICR, reg);
399 msleep(PCXHR_WAIT_DEFAULT);
400 dev_dbg(&mgr->pci->dev, "no need to load eeprom boot\n");
401 return 0;
402 }
403 PCXHR_OUTPB(mgr, PCXHR_DSP_ICR, reg);
404
405 err = pcxhr_download_dsp(mgr, eeprom);
406 if (err)
407 return err;
408 /* wait for chk bit */
409 return pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_CHK,
410 PCXHR_ISR_HI08_CHK, PCXHR_TIMEOUT_DSP, &reg);
411 }
412
413 /*
414 * load the boot image
415 */
416 int pcxhr_load_boot_binary(struct pcxhr_mgr *mgr, const struct firmware *boot)
417 {
418 int err;
419 unsigned int physaddr = mgr->hostport.addr;
420 unsigned char dummy;
421
422 /* send the hostport address to the DSP (only the upper 24 bit !) */
423 if (snd_BUG_ON(physaddr & 0xff))
424 return -EINVAL;
425 PCXHR_OUTPL(mgr, PCXHR_PLX_MBOX1, (physaddr >> 8));
426
427 err = pcxhr_send_it_dsp(mgr, PCXHR_IT_DOWNLOAD_BOOT, 0);
428 if (err)
429 return err;
430 /* clear hf5 bit */
431 PCXHR_OUTPL(mgr, PCXHR_PLX_MBOX0,
432 PCXHR_INPL(mgr, PCXHR_PLX_MBOX0) & ~PCXHR_MBOX0_HF5);
433
434 err = pcxhr_download_dsp(mgr, boot);
435 if (err)
436 return err;
437 /* wait for hf5 bit */
438 return pcxhr_check_reg_bit(mgr, PCXHR_PLX_MBOX0, PCXHR_MBOX0_HF5,
439 PCXHR_MBOX0_HF5, PCXHR_TIMEOUT_DSP, &dummy);
440 }
441
442 /*
443 * load the final dsp image
444 */
445 int pcxhr_load_dsp_binary(struct pcxhr_mgr *mgr, const struct firmware *dsp)
446 {
447 int err;
448 unsigned char dummy;
449 err = pcxhr_send_it_dsp(mgr, PCXHR_IT_RESET_BOARD_FUNC, 0);
450 if (err)
451 return err;
452 err = pcxhr_send_it_dsp(mgr, PCXHR_IT_DOWNLOAD_DSP, 0);
453 if (err)
454 return err;
455 err = pcxhr_download_dsp(mgr, dsp);
456 if (err)
457 return err;
458 /* wait for chk bit */
459 return pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR,
460 PCXHR_ISR_HI08_CHK,
461 PCXHR_ISR_HI08_CHK,
462 PCXHR_TIMEOUT_DSP, &dummy);
463 }
464
465
466 struct pcxhr_cmd_info {
467 u32 opcode; /* command word */
468 u16 st_length; /* status length */
469 u16 st_type; /* status type (RMH_SSIZE_XXX) */
470 };
471
472 /* RMH status type */
473 enum {
474 RMH_SSIZE_FIXED = 0, /* status size fix (st_length = 0..x) */
475 RMH_SSIZE_ARG = 1, /* status size given in the LSB byte */
476 RMH_SSIZE_MASK = 2, /* status size given in bitmask */
477 };
478
479 /*
480 * Array of DSP commands
481 */
482 static struct pcxhr_cmd_info pcxhr_dsp_cmds[] = {
483 [CMD_VERSION] = { 0x010000, 1, RMH_SSIZE_FIXED },
484 [CMD_SUPPORTED] = { 0x020000, 4, RMH_SSIZE_FIXED },
485 [CMD_TEST_IT] = { 0x040000, 1, RMH_SSIZE_FIXED },
486 [CMD_SEND_IRQA] = { 0x070001, 0, RMH_SSIZE_FIXED },
487 [CMD_ACCESS_IO_WRITE] = { 0x090000, 1, RMH_SSIZE_ARG },
488 [CMD_ACCESS_IO_READ] = { 0x094000, 1, RMH_SSIZE_ARG },
489 [CMD_ASYNC] = { 0x0a0000, 1, RMH_SSIZE_ARG },
490 [CMD_MODIFY_CLOCK] = { 0x0d0000, 0, RMH_SSIZE_FIXED },
491 [CMD_RESYNC_AUDIO_INPUTS] = { 0x0e0000, 0, RMH_SSIZE_FIXED },
492 [CMD_GET_DSP_RESOURCES] = { 0x100000, 4, RMH_SSIZE_FIXED },
493 [CMD_SET_TIMER_INTERRUPT] = { 0x110000, 0, RMH_SSIZE_FIXED },
494 [CMD_RES_PIPE] = { 0x400000, 0, RMH_SSIZE_FIXED },
495 [CMD_FREE_PIPE] = { 0x410000, 0, RMH_SSIZE_FIXED },
496 [CMD_CONF_PIPE] = { 0x422101, 0, RMH_SSIZE_FIXED },
497 [CMD_STOP_PIPE] = { 0x470004, 0, RMH_SSIZE_FIXED },
498 [CMD_PIPE_SAMPLE_COUNT] = { 0x49a000, 2, RMH_SSIZE_FIXED },
499 [CMD_CAN_START_PIPE] = { 0x4b0000, 1, RMH_SSIZE_FIXED },
500 [CMD_START_STREAM] = { 0x802000, 0, RMH_SSIZE_FIXED },
501 [CMD_STREAM_OUT_LEVEL_ADJUST] = { 0x822000, 0, RMH_SSIZE_FIXED },
502 [CMD_STOP_STREAM] = { 0x832000, 0, RMH_SSIZE_FIXED },
503 [CMD_UPDATE_R_BUFFERS] = { 0x840000, 0, RMH_SSIZE_FIXED },
504 [CMD_FORMAT_STREAM_OUT] = { 0x860000, 0, RMH_SSIZE_FIXED },
505 [CMD_FORMAT_STREAM_IN] = { 0x870000, 0, RMH_SSIZE_FIXED },
506 [CMD_STREAM_SAMPLE_COUNT] = { 0x902000, 2, RMH_SSIZE_FIXED },
507 [CMD_AUDIO_LEVEL_ADJUST] = { 0xc22000, 0, RMH_SSIZE_FIXED },
508 [CMD_GET_TIME_CODE] = { 0x060000, 5, RMH_SSIZE_FIXED },
509 [CMD_MANAGE_SIGNAL] = { 0x0f0000, 0, RMH_SSIZE_FIXED },
510 };
511
512 #ifdef CONFIG_SND_DEBUG_VERBOSE
513 static char* cmd_names[] = {
514 [CMD_VERSION] = "CMD_VERSION",
515 [CMD_SUPPORTED] = "CMD_SUPPORTED",
516 [CMD_TEST_IT] = "CMD_TEST_IT",
517 [CMD_SEND_IRQA] = "CMD_SEND_IRQA",
518 [CMD_ACCESS_IO_WRITE] = "CMD_ACCESS_IO_WRITE",
519 [CMD_ACCESS_IO_READ] = "CMD_ACCESS_IO_READ",
520 [CMD_ASYNC] = "CMD_ASYNC",
521 [CMD_MODIFY_CLOCK] = "CMD_MODIFY_CLOCK",
522 [CMD_RESYNC_AUDIO_INPUTS] = "CMD_RESYNC_AUDIO_INPUTS",
523 [CMD_GET_DSP_RESOURCES] = "CMD_GET_DSP_RESOURCES",
524 [CMD_SET_TIMER_INTERRUPT] = "CMD_SET_TIMER_INTERRUPT",
525 [CMD_RES_PIPE] = "CMD_RES_PIPE",
526 [CMD_FREE_PIPE] = "CMD_FREE_PIPE",
527 [CMD_CONF_PIPE] = "CMD_CONF_PIPE",
528 [CMD_STOP_PIPE] = "CMD_STOP_PIPE",
529 [CMD_PIPE_SAMPLE_COUNT] = "CMD_PIPE_SAMPLE_COUNT",
530 [CMD_CAN_START_PIPE] = "CMD_CAN_START_PIPE",
531 [CMD_START_STREAM] = "CMD_START_STREAM",
532 [CMD_STREAM_OUT_LEVEL_ADJUST] = "CMD_STREAM_OUT_LEVEL_ADJUST",
533 [CMD_STOP_STREAM] = "CMD_STOP_STREAM",
534 [CMD_UPDATE_R_BUFFERS] = "CMD_UPDATE_R_BUFFERS",
535 [CMD_FORMAT_STREAM_OUT] = "CMD_FORMAT_STREAM_OUT",
536 [CMD_FORMAT_STREAM_IN] = "CMD_FORMAT_STREAM_IN",
537 [CMD_STREAM_SAMPLE_COUNT] = "CMD_STREAM_SAMPLE_COUNT",
538 [CMD_AUDIO_LEVEL_ADJUST] = "CMD_AUDIO_LEVEL_ADJUST",
539 [CMD_GET_TIME_CODE] = "CMD_GET_TIME_CODE",
540 [CMD_MANAGE_SIGNAL] = "CMD_MANAGE_SIGNAL",
541 };
542 #endif
543
544
545 static int pcxhr_read_rmh_status(struct pcxhr_mgr *mgr, struct pcxhr_rmh *rmh)
546 {
547 int err;
548 int i;
549 u32 data;
550 u32 size_mask;
551 unsigned char reg;
552 int max_stat_len;
553
554 if (rmh->stat_len < PCXHR_SIZE_MAX_STATUS)
555 max_stat_len = PCXHR_SIZE_MAX_STATUS;
556 else max_stat_len = rmh->stat_len;
557
558 for (i = 0; i < rmh->stat_len; i++) {
559 /* wait for receiver full */
560 err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR,
561 PCXHR_ISR_HI08_RXDF,
562 PCXHR_ISR_HI08_RXDF,
563 PCXHR_TIMEOUT_DSP, &reg);
564 if (err) {
565 dev_err(&mgr->pci->dev,
566 "ERROR RMH stat: ISR:RXDF=1 (ISR = %x; i=%d )\n",
567 reg, i);
568 return err;
569 }
570 /* read data */
571 data = PCXHR_INPB(mgr, PCXHR_DSP_TXH) << 16;
572 data |= PCXHR_INPB(mgr, PCXHR_DSP_TXM) << 8;
573 data |= PCXHR_INPB(mgr, PCXHR_DSP_TXL);
574
575 /* need to update rmh->stat_len on the fly ?? */
576 if (!i) {
577 if (rmh->dsp_stat != RMH_SSIZE_FIXED) {
578 if (rmh->dsp_stat == RMH_SSIZE_ARG) {
579 rmh->stat_len = (data & 0x0000ff) + 1;
580 data &= 0xffff00;
581 } else {
582 /* rmh->dsp_stat == RMH_SSIZE_MASK */
583 rmh->stat_len = 1;
584 size_mask = data;
585 while (size_mask) {
586 if (size_mask & 1)
587 rmh->stat_len++;
588 size_mask >>= 1;
589 }
590 }
591 }
592 }
593 #ifdef CONFIG_SND_DEBUG_VERBOSE
594 if (rmh->cmd_idx < CMD_LAST_INDEX)
595 dev_dbg(&mgr->pci->dev, " stat[%d]=%x\n", i, data);
596 #endif
597 if (i < max_stat_len)
598 rmh->stat[i] = data;
599 }
600 if (rmh->stat_len > max_stat_len) {
601 dev_dbg(&mgr->pci->dev, "PCXHR : rmh->stat_len=%x too big\n",
602 rmh->stat_len);
603 rmh->stat_len = max_stat_len;
604 }
605 return 0;
606 }
607
608 static int pcxhr_send_msg_nolock(struct pcxhr_mgr *mgr, struct pcxhr_rmh *rmh)
609 {
610 int err;
611 int i;
612 u32 data;
613 unsigned char reg;
614
615 if (snd_BUG_ON(rmh->cmd_len >= PCXHR_SIZE_MAX_CMD))
616 return -EINVAL;
617 err = pcxhr_send_it_dsp(mgr, PCXHR_IT_MESSAGE, 1);
618 if (err) {
619 dev_err(&mgr->pci->dev,
620 "pcxhr_send_message : ED_DSP_CRASHED\n");
621 return err;
622 }
623 /* wait for chk bit */
624 err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_CHK,
625 PCXHR_ISR_HI08_CHK, PCXHR_TIMEOUT_DSP, &reg);
626 if (err)
627 return err;
628 /* reset irq chk */
629 err = pcxhr_send_it_dsp(mgr, PCXHR_IT_RESET_CHK, 1);
630 if (err)
631 return err;
632 /* wait for chk bit == 0*/
633 err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_CHK, 0,
634 PCXHR_TIMEOUT_DSP, &reg);
635 if (err)
636 return err;
637
638 data = rmh->cmd[0];
639
640 if (rmh->cmd_len > 1)
641 data |= 0x008000; /* MASK_MORE_THAN_1_WORD_COMMAND */
642 else
643 data &= 0xff7fff; /* MASK_1_WORD_COMMAND */
644 #ifdef CONFIG_SND_DEBUG_VERBOSE
645 if (rmh->cmd_idx < CMD_LAST_INDEX)
646 dev_dbg(&mgr->pci->dev, "MSG cmd[0]=%x (%s)\n",
647 data, cmd_names[rmh->cmd_idx]);
648 #endif
649
650 err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_TRDY,
651 PCXHR_ISR_HI08_TRDY, PCXHR_TIMEOUT_DSP, &reg);
652 if (err)
653 return err;
654 PCXHR_OUTPB(mgr, PCXHR_DSP_TXH, (data>>16)&0xFF);
655 PCXHR_OUTPB(mgr, PCXHR_DSP_TXM, (data>>8)&0xFF);
656 PCXHR_OUTPB(mgr, PCXHR_DSP_TXL, (data&0xFF));
657
658 if (rmh->cmd_len > 1) {
659 /* send length */
660 data = rmh->cmd_len - 1;
661 err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR,
662 PCXHR_ISR_HI08_TRDY,
663 PCXHR_ISR_HI08_TRDY,
664 PCXHR_TIMEOUT_DSP, &reg);
665 if (err)
666 return err;
667 PCXHR_OUTPB(mgr, PCXHR_DSP_TXH, (data>>16)&0xFF);
668 PCXHR_OUTPB(mgr, PCXHR_DSP_TXM, (data>>8)&0xFF);
669 PCXHR_OUTPB(mgr, PCXHR_DSP_TXL, (data&0xFF));
670
671 for (i=1; i < rmh->cmd_len; i++) {
672 /* send other words */
673 data = rmh->cmd[i];
674 #ifdef CONFIG_SND_DEBUG_VERBOSE
675 if (rmh->cmd_idx < CMD_LAST_INDEX)
676 dev_dbg(&mgr->pci->dev,
677 " cmd[%d]=%x\n", i, data);
678 #endif
679 err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR,
680 PCXHR_ISR_HI08_TRDY,
681 PCXHR_ISR_HI08_TRDY,
682 PCXHR_TIMEOUT_DSP, &reg);
683 if (err)
684 return err;
685 PCXHR_OUTPB(mgr, PCXHR_DSP_TXH, (data>>16)&0xFF);
686 PCXHR_OUTPB(mgr, PCXHR_DSP_TXM, (data>>8)&0xFF);
687 PCXHR_OUTPB(mgr, PCXHR_DSP_TXL, (data&0xFF));
688 }
689 }
690 /* wait for chk bit */
691 err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_CHK,
692 PCXHR_ISR_HI08_CHK, PCXHR_TIMEOUT_DSP, &reg);
693 if (err)
694 return err;
695 /* test status ISR */
696 if (reg & PCXHR_ISR_HI08_ERR) {
697 /* ERROR, wait for receiver full */
698 err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR,
699 PCXHR_ISR_HI08_RXDF,
700 PCXHR_ISR_HI08_RXDF,
701 PCXHR_TIMEOUT_DSP, &reg);
702 if (err) {
703 dev_err(&mgr->pci->dev,
704 "ERROR RMH: ISR:RXDF=1 (ISR = %x)\n", reg);
705 return err;
706 }
707 /* read error code */
708 data = PCXHR_INPB(mgr, PCXHR_DSP_TXH) << 16;
709 data |= PCXHR_INPB(mgr, PCXHR_DSP_TXM) << 8;
710 data |= PCXHR_INPB(mgr, PCXHR_DSP_TXL);
711 dev_err(&mgr->pci->dev, "ERROR RMH(%d): 0x%x\n",
712 rmh->cmd_idx, data);
713 err = -EINVAL;
714 } else {
715 /* read the response data */
716 err = pcxhr_read_rmh_status(mgr, rmh);
717 }
718 /* reset semaphore */
719 if (pcxhr_send_it_dsp(mgr, PCXHR_IT_RESET_SEMAPHORE, 1) < 0)
720 return -EIO;
721 return err;
722 }
723
724
725 /**
726 * pcxhr_init_rmh - initialize the RMH instance
727 * @rmh: the rmh pointer to be initialized
728 * @cmd: the rmh command to be set
729 */
730 void pcxhr_init_rmh(struct pcxhr_rmh *rmh, int cmd)
731 {
732 if (snd_BUG_ON(cmd >= CMD_LAST_INDEX))
733 return;
734 rmh->cmd[0] = pcxhr_dsp_cmds[cmd].opcode;
735 rmh->cmd_len = 1;
736 rmh->stat_len = pcxhr_dsp_cmds[cmd].st_length;
737 rmh->dsp_stat = pcxhr_dsp_cmds[cmd].st_type;
738 rmh->cmd_idx = cmd;
739 }
740
741
742 void pcxhr_set_pipe_cmd_params(struct pcxhr_rmh *rmh, int capture,
743 unsigned int param1, unsigned int param2,
744 unsigned int param3)
745 {
746 snd_BUG_ON(param1 > MASK_FIRST_FIELD);
747 if (capture)
748 rmh->cmd[0] |= 0x800; /* COMMAND_RECORD_MASK */
749 if (param1)
750 rmh->cmd[0] |= (param1 << FIELD_SIZE);
751 if (param2) {
752 snd_BUG_ON(param2 > MASK_FIRST_FIELD);
753 rmh->cmd[0] |= param2;
754 }
755 if(param3) {
756 snd_BUG_ON(param3 > MASK_DSP_WORD);
757 rmh->cmd[1] = param3;
758 rmh->cmd_len = 2;
759 }
760 }
761
762 /*
763 * pcxhr_send_msg - send a DSP message with spinlock
764 * @rmh: the rmh record to send and receive
765 *
766 * returns 0 if successful, or a negative error code.
767 */
768 int pcxhr_send_msg(struct pcxhr_mgr *mgr, struct pcxhr_rmh *rmh)
769 {
770 int err;
771
772 mutex_lock(&mgr->msg_lock);
773 err = pcxhr_send_msg_nolock(mgr, rmh);
774 mutex_unlock(&mgr->msg_lock);
775 return err;
776 }
777
778 static inline int pcxhr_pipes_running(struct pcxhr_mgr *mgr)
779 {
780 int start_mask = PCXHR_INPL(mgr, PCXHR_PLX_MBOX2);
781 /* least segnificant 12 bits are the pipe states
782 * for the playback audios
783 * next 12 bits are the pipe states for the capture audios
784 * (PCXHR_PIPE_STATE_CAPTURE_OFFSET)
785 */
786 start_mask &= 0xffffff;
787 dev_dbg(&mgr->pci->dev, "CMD_PIPE_STATE MBOX2=0x%06x\n", start_mask);
788 return start_mask;
789 }
790
791 #define PCXHR_PIPE_STATE_CAPTURE_OFFSET 12
792 #define MAX_WAIT_FOR_DSP 20
793
794 static int pcxhr_prepair_pipe_start(struct pcxhr_mgr *mgr,
795 int audio_mask, int *retry)
796 {
797 struct pcxhr_rmh rmh;
798 int err;
799 int audio = 0;
800
801 *retry = 0;
802 while (audio_mask) {
803 if (audio_mask & 1) {
804 pcxhr_init_rmh(&rmh, CMD_CAN_START_PIPE);
805 if (audio < PCXHR_PIPE_STATE_CAPTURE_OFFSET) {
806 /* can start playback pipe */
807 pcxhr_set_pipe_cmd_params(&rmh, 0, audio, 0, 0);
808 } else {
809 /* can start capture pipe */
810 pcxhr_set_pipe_cmd_params(&rmh, 1, audio -
811 PCXHR_PIPE_STATE_CAPTURE_OFFSET,
812 0, 0);
813 }
814 err = pcxhr_send_msg(mgr, &rmh);
815 if (err) {
816 dev_err(&mgr->pci->dev,
817 "error pipe start "
818 "(CMD_CAN_START_PIPE) err=%x!\n",
819 err);
820 return err;
821 }
822 /* if the pipe couldn't be prepaired for start,
823 * retry it later
824 */
825 if (rmh.stat[0] == 0)
826 *retry |= (1<<audio);
827 }
828 audio_mask>>=1;
829 audio++;
830 }
831 return 0;
832 }
833
834 static int pcxhr_stop_pipes(struct pcxhr_mgr *mgr, int audio_mask)
835 {
836 struct pcxhr_rmh rmh;
837 int err;
838 int audio = 0;
839
840 while (audio_mask) {
841 if (audio_mask & 1) {
842 pcxhr_init_rmh(&rmh, CMD_STOP_PIPE);
843 if (audio < PCXHR_PIPE_STATE_CAPTURE_OFFSET) {
844 /* stop playback pipe */
845 pcxhr_set_pipe_cmd_params(&rmh, 0, audio, 0, 0);
846 } else {
847 /* stop capture pipe */
848 pcxhr_set_pipe_cmd_params(&rmh, 1, audio -
849 PCXHR_PIPE_STATE_CAPTURE_OFFSET,
850 0, 0);
851 }
852 err = pcxhr_send_msg(mgr, &rmh);
853 if (err) {
854 dev_err(&mgr->pci->dev,
855 "error pipe stop "
856 "(CMD_STOP_PIPE) err=%x!\n", err);
857 return err;
858 }
859 }
860 audio_mask>>=1;
861 audio++;
862 }
863 return 0;
864 }
865
866 static int pcxhr_toggle_pipes(struct pcxhr_mgr *mgr, int audio_mask)
867 {
868 struct pcxhr_rmh rmh;
869 int err;
870 int audio = 0;
871
872 while (audio_mask) {
873 if (audio_mask & 1) {
874 pcxhr_init_rmh(&rmh, CMD_CONF_PIPE);
875 if (audio < PCXHR_PIPE_STATE_CAPTURE_OFFSET)
876 pcxhr_set_pipe_cmd_params(&rmh, 0, 0, 0,
877 1 << audio);
878 else
879 pcxhr_set_pipe_cmd_params(&rmh, 1, 0, 0,
880 1 << (audio - PCXHR_PIPE_STATE_CAPTURE_OFFSET));
881 err = pcxhr_send_msg(mgr, &rmh);
882 if (err) {
883 dev_err(&mgr->pci->dev,
884 "error pipe start "
885 "(CMD_CONF_PIPE) err=%x!\n", err);
886 return err;
887 }
888 }
889 audio_mask>>=1;
890 audio++;
891 }
892 /* now fire the interrupt on the card */
893 pcxhr_init_rmh(&rmh, CMD_SEND_IRQA);
894 err = pcxhr_send_msg(mgr, &rmh);
895 if (err) {
896 dev_err(&mgr->pci->dev,
897 "error pipe start (CMD_SEND_IRQA) err=%x!\n",
898 err);
899 return err;
900 }
901 return 0;
902 }
903
904
905
906 int pcxhr_set_pipe_state(struct pcxhr_mgr *mgr, int playback_mask,
907 int capture_mask, int start)
908 {
909 int state, i, err;
910 int audio_mask;
911
912 #ifdef CONFIG_SND_DEBUG_VERBOSE
913 ktime_t start_time, stop_time, diff_time;
914
915 start_time = ktime_get();
916 #endif
917 audio_mask = (playback_mask |
918 (capture_mask << PCXHR_PIPE_STATE_CAPTURE_OFFSET));
919 /* current pipe state (playback + record) */
920 state = pcxhr_pipes_running(mgr);
921 dev_dbg(&mgr->pci->dev,
922 "pcxhr_set_pipe_state %s (mask %x current %x)\n",
923 start ? "START" : "STOP", audio_mask, state);
924 if (start) {
925 /* start only pipes that are not yet started */
926 audio_mask &= ~state;
927 state = audio_mask;
928 for (i = 0; i < MAX_WAIT_FOR_DSP; i++) {
929 err = pcxhr_prepair_pipe_start(mgr, state, &state);
930 if (err)
931 return err;
932 if (state == 0)
933 break; /* success, all pipes prepaired */
934 mdelay(1); /* wait 1 millisecond and retry */
935 }
936 } else {
937 audio_mask &= state; /* stop only pipes that are started */
938 }
939 if (audio_mask == 0)
940 return 0;
941
942 err = pcxhr_toggle_pipes(mgr, audio_mask);
943 if (err)
944 return err;
945
946 i = 0;
947 while (1) {
948 state = pcxhr_pipes_running(mgr);
949 /* have all pipes the new state ? */
950 if ((state & audio_mask) == (start ? audio_mask : 0))
951 break;
952 if (++i >= MAX_WAIT_FOR_DSP * 100) {
953 dev_err(&mgr->pci->dev, "error pipe start/stop\n");
954 return -EBUSY;
955 }
956 udelay(10); /* wait 10 microseconds */
957 }
958 if (!start) {
959 err = pcxhr_stop_pipes(mgr, audio_mask);
960 if (err)
961 return err;
962 }
963 #ifdef CONFIG_SND_DEBUG_VERBOSE
964 stop_time = ktime_get();
965 diff_time = ktime_sub(stop_time, start_time);
966 dev_dbg(&mgr->pci->dev, "***SET PIPE STATE*** TIME = %ld (err = %x)\n",
967 (long)(ktime_to_ns(diff_time)), err);
968 #endif
969 return 0;
970 }
971
972 int pcxhr_write_io_num_reg_cont(struct pcxhr_mgr *mgr, unsigned int mask,
973 unsigned int value, int *changed)
974 {
975 struct pcxhr_rmh rmh;
976 int err;
977
978 mutex_lock(&mgr->msg_lock);
979 if ((mgr->io_num_reg_cont & mask) == value) {
980 dev_dbg(&mgr->pci->dev,
981 "IO_NUM_REG_CONT mask %x already is set to %x\n",
982 mask, value);
983 if (changed)
984 *changed = 0;
985 mutex_unlock(&mgr->msg_lock);
986 return 0; /* already programmed */
987 }
988 pcxhr_init_rmh(&rmh, CMD_ACCESS_IO_WRITE);
989 rmh.cmd[0] |= IO_NUM_REG_CONT;
990 rmh.cmd[1] = mask;
991 rmh.cmd[2] = value;
992 rmh.cmd_len = 3;
993 err = pcxhr_send_msg_nolock(mgr, &rmh);
994 if (err == 0) {
995 mgr->io_num_reg_cont &= ~mask;
996 mgr->io_num_reg_cont |= value;
997 if (changed)
998 *changed = 1;
999 }
1000 mutex_unlock(&mgr->msg_lock);
1001 return err;
1002 }
1003
1004 #define PCXHR_IRQ_TIMER 0x000300
1005 #define PCXHR_IRQ_FREQ_CHANGE 0x000800
1006 #define PCXHR_IRQ_TIME_CODE 0x001000
1007 #define PCXHR_IRQ_NOTIFY 0x002000
1008 #define PCXHR_IRQ_ASYNC 0x008000
1009 #define PCXHR_IRQ_MASK 0x00bb00
1010 #define PCXHR_FATAL_DSP_ERR 0xff0000
1011
1012 enum pcxhr_async_err_src {
1013 PCXHR_ERR_PIPE,
1014 PCXHR_ERR_STREAM,
1015 PCXHR_ERR_AUDIO
1016 };
1017
1018 static int pcxhr_handle_async_err(struct pcxhr_mgr *mgr, u32 err,
1019 enum pcxhr_async_err_src err_src, int pipe,
1020 int is_capture)
1021 {
1022 static char* err_src_name[] = {
1023 [PCXHR_ERR_PIPE] = "Pipe",
1024 [PCXHR_ERR_STREAM] = "Stream",
1025 [PCXHR_ERR_AUDIO] = "Audio"
1026 };
1027
1028 if (err & 0xfff)
1029 err &= 0xfff;
1030 else
1031 err = ((err >> 12) & 0xfff);
1032 if (!err)
1033 return 0;
1034 dev_dbg(&mgr->pci->dev, "CMD_ASYNC : Error %s %s Pipe %d err=%x\n",
1035 err_src_name[err_src],
1036 is_capture ? "Record" : "Play", pipe, err);
1037 if (err == 0xe01)
1038 mgr->async_err_stream_xrun++;
1039 else if (err == 0xe10)
1040 mgr->async_err_pipe_xrun++;
1041 else
1042 mgr->async_err_other_last = (int)err;
1043 return 1;
1044 }
1045
1046
1047 static void pcxhr_msg_thread(struct pcxhr_mgr *mgr)
1048 {
1049 struct pcxhr_rmh *prmh = mgr->prmh;
1050 int err;
1051 int i, j;
1052
1053 if (mgr->src_it_dsp & PCXHR_IRQ_FREQ_CHANGE)
1054 dev_dbg(&mgr->pci->dev,
1055 "PCXHR_IRQ_FREQ_CHANGE event occurred\n");
1056 if (mgr->src_it_dsp & PCXHR_IRQ_TIME_CODE)
1057 dev_dbg(&mgr->pci->dev,
1058 "PCXHR_IRQ_TIME_CODE event occurred\n");
1059 if (mgr->src_it_dsp & PCXHR_IRQ_NOTIFY)
1060 dev_dbg(&mgr->pci->dev,
1061 "PCXHR_IRQ_NOTIFY event occurred\n");
1062 if (mgr->src_it_dsp & (PCXHR_IRQ_FREQ_CHANGE | PCXHR_IRQ_TIME_CODE)) {
1063 /* clear events FREQ_CHANGE and TIME_CODE */
1064 pcxhr_init_rmh(prmh, CMD_TEST_IT);
1065 err = pcxhr_send_msg(mgr, prmh);
1066 dev_dbg(&mgr->pci->dev, "CMD_TEST_IT : err=%x, stat=%x\n",
1067 err, prmh->stat[0]);
1068 }
1069 if (mgr->src_it_dsp & PCXHR_IRQ_ASYNC) {
1070 dev_dbg(&mgr->pci->dev,
1071 "PCXHR_IRQ_ASYNC event occurred\n");
1072
1073 pcxhr_init_rmh(prmh, CMD_ASYNC);
1074 prmh->cmd[0] |= 1; /* add SEL_ASYNC_EVENTS */
1075 /* this is the only one extra long response command */
1076 prmh->stat_len = PCXHR_SIZE_MAX_LONG_STATUS;
1077 err = pcxhr_send_msg(mgr, prmh);
1078 if (err)
1079 dev_err(&mgr->pci->dev, "ERROR pcxhr_msg_thread=%x;\n",
1080 err);
1081 i = 1;
1082 while (i < prmh->stat_len) {
1083 int nb_audio = ((prmh->stat[i] >> FIELD_SIZE) &
1084 MASK_FIRST_FIELD);
1085 int nb_stream = ((prmh->stat[i] >> (2*FIELD_SIZE)) &
1086 MASK_FIRST_FIELD);
1087 int pipe = prmh->stat[i] & MASK_FIRST_FIELD;
1088 int is_capture = prmh->stat[i] & 0x400000;
1089 u32 err2;
1090
1091 if (prmh->stat[i] & 0x800000) { /* if BIT_END */
1092 dev_dbg(&mgr->pci->dev,
1093 "TASKLET : End%sPipe %d\n",
1094 is_capture ? "Record" : "Play",
1095 pipe);
1096 }
1097 i++;
1098 err2 = prmh->stat[i] ? prmh->stat[i] : prmh->stat[i+1];
1099 if (err2)
1100 pcxhr_handle_async_err(mgr, err2,
1101 PCXHR_ERR_PIPE,
1102 pipe, is_capture);
1103 i += 2;
1104 for (j = 0; j < nb_stream; j++) {
1105 err2 = prmh->stat[i] ?
1106 prmh->stat[i] : prmh->stat[i+1];
1107 if (err2)
1108 pcxhr_handle_async_err(mgr, err2,
1109 PCXHR_ERR_STREAM,
1110 pipe,
1111 is_capture);
1112 i += 2;
1113 }
1114 for (j = 0; j < nb_audio; j++) {
1115 err2 = prmh->stat[i] ?
1116 prmh->stat[i] : prmh->stat[i+1];
1117 if (err2)
1118 pcxhr_handle_async_err(mgr, err2,
1119 PCXHR_ERR_AUDIO,
1120 pipe,
1121 is_capture);
1122 i += 2;
1123 }
1124 }
1125 }
1126 }
1127
1128 static u_int64_t pcxhr_stream_read_position(struct pcxhr_mgr *mgr,
1129 struct pcxhr_stream *stream)
1130 {
1131 u_int64_t hw_sample_count;
1132 struct pcxhr_rmh rmh;
1133 int err, stream_mask;
1134
1135 stream_mask = stream->pipe->is_capture ? 1 : 1<<stream->substream->number;
1136
1137 /* get sample count for one stream */
1138 pcxhr_init_rmh(&rmh, CMD_STREAM_SAMPLE_COUNT);
1139 pcxhr_set_pipe_cmd_params(&rmh, stream->pipe->is_capture,
1140 stream->pipe->first_audio, 0, stream_mask);
1141 /* rmh.stat_len = 2; */ /* 2 resp data for each stream of the pipe */
1142
1143 err = pcxhr_send_msg(mgr, &rmh);
1144 if (err)
1145 return 0;
1146
1147 hw_sample_count = ((u_int64_t)rmh.stat[0]) << 24;
1148 hw_sample_count += (u_int64_t)rmh.stat[1];
1149
1150 dev_dbg(&mgr->pci->dev,
1151 "stream %c%d : abs samples real(%llu) timer(%llu)\n",
1152 stream->pipe->is_capture ? 'C' : 'P',
1153 stream->substream->number,
1154 hw_sample_count,
1155 stream->timer_abs_periods + stream->timer_period_frag +
1156 mgr->granularity);
1157 return hw_sample_count;
1158 }
1159
1160 static void pcxhr_update_timer_pos(struct pcxhr_mgr *mgr,
1161 struct pcxhr_stream *stream,
1162 int samples_to_add)
1163 {
1164 if (stream->substream &&
1165 (stream->status == PCXHR_STREAM_STATUS_RUNNING)) {
1166 u_int64_t new_sample_count;
1167 int elapsed = 0;
1168 int hardware_read = 0;
1169 struct snd_pcm_runtime *runtime = stream->substream->runtime;
1170
1171 if (samples_to_add < 0) {
1172 stream->timer_is_synced = 0;
1173 /* add default if no hardware_read possible */
1174 samples_to_add = mgr->granularity;
1175 }
1176
1177 if (!stream->timer_is_synced) {
1178 if ((stream->timer_abs_periods != 0) ||
1179 ((stream->timer_period_frag + samples_to_add) >=
1180 runtime->period_size)) {
1181 new_sample_count =
1182 pcxhr_stream_read_position(mgr, stream);
1183 hardware_read = 1;
1184 if (new_sample_count >= mgr->granularity) {
1185 /* sub security offset because of
1186 * jitter and finer granularity of
1187 * dsp time (MBOX4)
1188 */
1189 new_sample_count -= mgr->granularity;
1190 stream->timer_is_synced = 1;
1191 }
1192 }
1193 }
1194 if (!hardware_read) {
1195 /* if we didn't try to sync the position, increment it
1196 * by PCXHR_GRANULARITY every timer interrupt
1197 */
1198 new_sample_count = stream->timer_abs_periods +
1199 stream->timer_period_frag + samples_to_add;
1200 }
1201 while (1) {
1202 u_int64_t new_elapse_pos = stream->timer_abs_periods +
1203 runtime->period_size;
1204 if (new_elapse_pos > new_sample_count)
1205 break;
1206 elapsed = 1;
1207 stream->timer_buf_periods++;
1208 if (stream->timer_buf_periods >= runtime->periods)
1209 stream->timer_buf_periods = 0;
1210 stream->timer_abs_periods = new_elapse_pos;
1211 }
1212 if (new_sample_count >= stream->timer_abs_periods) {
1213 stream->timer_period_frag =
1214 (u_int32_t)(new_sample_count -
1215 stream->timer_abs_periods);
1216 } else {
1217 dev_err(&mgr->pci->dev,
1218 "ERROR new_sample_count too small ??? %ld\n",
1219 (long unsigned int)new_sample_count);
1220 }
1221
1222 if (elapsed) {
1223 mutex_unlock(&mgr->lock);
1224 snd_pcm_period_elapsed(stream->substream);
1225 mutex_lock(&mgr->lock);
1226 }
1227 }
1228 }
1229
1230 irqreturn_t pcxhr_interrupt(int irq, void *dev_id)
1231 {
1232 struct pcxhr_mgr *mgr = dev_id;
1233 unsigned int reg;
1234 bool wake_thread = false;
1235
1236 reg = PCXHR_INPL(mgr, PCXHR_PLX_IRQCS);
1237 if (! (reg & PCXHR_IRQCS_ACTIVE_PCIDB)) {
1238 /* this device did not cause the interrupt */
1239 return IRQ_NONE;
1240 }
1241
1242 /* clear interrupt */
1243 reg = PCXHR_INPL(mgr, PCXHR_PLX_L2PCIDB);
1244 PCXHR_OUTPL(mgr, PCXHR_PLX_L2PCIDB, reg);
1245
1246 /* timer irq occurred */
1247 if (reg & PCXHR_IRQ_TIMER) {
1248 int timer_toggle = reg & PCXHR_IRQ_TIMER;
1249 if (timer_toggle == mgr->timer_toggle) {
1250 dev_dbg(&mgr->pci->dev, "ERROR TIMER TOGGLE\n");
1251 mgr->dsp_time_err++;
1252 }
1253
1254 mgr->timer_toggle = timer_toggle;
1255 mgr->src_it_dsp = reg;
1256 wake_thread = true;
1257 }
1258
1259 /* other irq's handled in the thread */
1260 if (reg & PCXHR_IRQ_MASK) {
1261 if (reg & PCXHR_IRQ_ASYNC) {
1262 /* as we didn't request any async notifications,
1263 * some kind of xrun error will probably occurred
1264 */
1265 /* better resynchronize all streams next interrupt : */
1266 mgr->dsp_time_last = PCXHR_DSP_TIME_INVALID;
1267 }
1268 mgr->src_it_dsp = reg;
1269 wake_thread = true;
1270 }
1271 #ifdef CONFIG_SND_DEBUG_VERBOSE
1272 if (reg & PCXHR_FATAL_DSP_ERR)
1273 dev_dbg(&mgr->pci->dev, "FATAL DSP ERROR : %x\n", reg);
1274 #endif
1275
1276 return wake_thread ? IRQ_WAKE_THREAD : IRQ_HANDLED;
1277 }
1278
1279 irqreturn_t pcxhr_threaded_irq(int irq, void *dev_id)
1280 {
1281 struct pcxhr_mgr *mgr = dev_id;
1282 int i, j;
1283 struct snd_pcxhr *chip;
1284
1285 mutex_lock(&mgr->lock);
1286 if (mgr->src_it_dsp & PCXHR_IRQ_TIMER) {
1287 /* is a 24 bit counter */
1288 int dsp_time_new =
1289 PCXHR_INPL(mgr, PCXHR_PLX_MBOX4) & PCXHR_DSP_TIME_MASK;
1290 int dsp_time_diff = dsp_time_new - mgr->dsp_time_last;
1291
1292 if ((dsp_time_diff < 0) &&
1293 (mgr->dsp_time_last != PCXHR_DSP_TIME_INVALID)) {
1294 /* handle dsp counter wraparound without resync */
1295 int tmp_diff = dsp_time_diff + PCXHR_DSP_TIME_MASK + 1;
1296 dev_dbg(&mgr->pci->dev,
1297 "WARNING DSP timestamp old(%d) new(%d)",
1298 mgr->dsp_time_last, dsp_time_new);
1299 if (tmp_diff > 0 && tmp_diff <= (2*mgr->granularity)) {
1300 dev_dbg(&mgr->pci->dev,
1301 "-> timestamp wraparound OK: "
1302 "diff=%d\n", tmp_diff);
1303 dsp_time_diff = tmp_diff;
1304 } else {
1305 dev_dbg(&mgr->pci->dev,
1306 "-> resynchronize all streams\n");
1307 mgr->dsp_time_err++;
1308 }
1309 }
1310 #ifdef CONFIG_SND_DEBUG_VERBOSE
1311 if (dsp_time_diff == 0)
1312 dev_dbg(&mgr->pci->dev,
1313 "ERROR DSP TIME NO DIFF time(%d)\n",
1314 dsp_time_new);
1315 else if (dsp_time_diff >= (2*mgr->granularity))
1316 dev_dbg(&mgr->pci->dev,
1317 "ERROR DSP TIME TOO BIG old(%d) add(%d)\n",
1318 mgr->dsp_time_last,
1319 dsp_time_new - mgr->dsp_time_last);
1320 else if (dsp_time_diff % mgr->granularity)
1321 dev_dbg(&mgr->pci->dev,
1322 "ERROR DSP TIME increased by %d\n",
1323 dsp_time_diff);
1324 #endif
1325 mgr->dsp_time_last = dsp_time_new;
1326
1327 for (i = 0; i < mgr->num_cards; i++) {
1328 chip = mgr->chip[i];
1329 for (j = 0; j < chip->nb_streams_capt; j++)
1330 pcxhr_update_timer_pos(mgr,
1331 &chip->capture_stream[j],
1332 dsp_time_diff);
1333 }
1334 for (i = 0; i < mgr->num_cards; i++) {
1335 chip = mgr->chip[i];
1336 for (j = 0; j < chip->nb_streams_play; j++)
1337 pcxhr_update_timer_pos(mgr,
1338 &chip->playback_stream[j],
1339 dsp_time_diff);
1340 }
1341 }
1342
1343 pcxhr_msg_thread(mgr);
1344 mutex_unlock(&mgr->lock);
1345 return IRQ_HANDLED;
1346 }
Linux kernel - Deliverables
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