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code style scripts/checkpatch.pl (linux-3.9-rc1) formatting
[linux-2.6.34.14-moxart.git] / sound / pci / pcxhr / pcxhr_core.c
blob833e7180ad2de0d0a3f66683274a4446c57dc4e4
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 <asm/io.h>
27 #include <sound/core.h>
28 #include "pcxhr.h"
29 #include "pcxhr_mixer.h"
30 #include "pcxhr_hwdep.h"
31 #include "pcxhr_core.h"
32
33
34 /* registers used on the PLX (port 1) */
35 #define PCXHR_PLX_OFFSET_MIN 0x40
36 #define PCXHR_PLX_MBOX0 0x40
37 #define PCXHR_PLX_MBOX1 0x44
38 #define PCXHR_PLX_MBOX2 0x48
39 #define PCXHR_PLX_MBOX3 0x4C
40 #define PCXHR_PLX_MBOX4 0x50
41 #define PCXHR_PLX_MBOX5 0x54
42 #define PCXHR_PLX_MBOX6 0x58
43 #define PCXHR_PLX_MBOX7 0x5C
44 #define PCXHR_PLX_L2PCIDB 0x64
45 #define PCXHR_PLX_IRQCS 0x68
46 #define PCXHR_PLX_CHIPSC 0x6C
47
48 /* registers used on the DSP (port 2) */
49 #define PCXHR_DSP_ICR 0x00
50 #define PCXHR_DSP_CVR 0x04
51 #define PCXHR_DSP_ISR 0x08
52 #define PCXHR_DSP_IVR 0x0C
53 #define PCXHR_DSP_RXH 0x14
54 #define PCXHR_DSP_TXH 0x14
55 #define PCXHR_DSP_RXM 0x18
56 #define PCXHR_DSP_TXM 0x18
57 #define PCXHR_DSP_RXL 0x1C
58 #define PCXHR_DSP_TXL 0x1C
59 #define PCXHR_DSP_RESET 0x20
60 #define PCXHR_DSP_OFFSET_MAX 0x20
61
62 /* access to the card */
63 #define PCXHR_PLX 1
64 #define PCXHR_DSP 2
65
66 #if (PCXHR_DSP_OFFSET_MAX > PCXHR_PLX_OFFSET_MIN)
67 #undef PCXHR_REG_TO_PORT(x)
68 #else
69 #define PCXHR_REG_TO_PORT(x) ((x)>PCXHR_DSP_OFFSET_MAX ? PCXHR_PLX : PCXHR_DSP)
70 #endif
71 #define PCXHR_INPB(mgr,x) inb((mgr)->port[PCXHR_REG_TO_PORT(x)] + (x))
72 #define PCXHR_INPL(mgr,x) inl((mgr)->port[PCXHR_REG_TO_PORT(x)] + (x))
73 #define PCXHR_OUTPB(mgr,x,data) outb((data), (mgr)->port[PCXHR_REG_TO_PORT(x)] + (x))
74 #define PCXHR_OUTPL(mgr,x,data) outl((data), (mgr)->port[PCXHR_REG_TO_PORT(x)] + (x))
75 /* attention : access the PCXHR_DSP_* registers with inb and outb only ! */
76
77 /* params used with PCXHR_PLX_MBOX0 */
78 #define PCXHR_MBOX0_HF5 (1 << 0)
79 #define PCXHR_MBOX0_HF4 (1 << 1)
80 #define PCXHR_MBOX0_BOOT_HERE (1 << 23)
81 /* params used with PCXHR_PLX_IRQCS */
82 #define PCXHR_IRQCS_ENABLE_PCIIRQ (1 << 8)
83 #define PCXHR_IRQCS_ENABLE_PCIDB (1 << 9)
84 #define PCXHR_IRQCS_ACTIVE_PCIDB (1 << 13)
85 /* params used with PCXHR_PLX_CHIPSC */
86 #define PCXHR_CHIPSC_INIT_VALUE 0x100D767E
87 #define PCXHR_CHIPSC_RESET_XILINX (1 << 16)
88 #define PCXHR_CHIPSC_GPI_USERI (1 << 17)
89 #define PCXHR_CHIPSC_DATA_CLK (1 << 24)
90 #define PCXHR_CHIPSC_DATA_IN (1 << 26)
91
92 /* params used with PCXHR_DSP_ICR */
93 #define PCXHR_ICR_HI08_RREQ 0x01
94 #define PCXHR_ICR_HI08_TREQ 0x02
95 #define PCXHR_ICR_HI08_HDRQ 0x04
96 #define PCXHR_ICR_HI08_HF0 0x08
97 #define PCXHR_ICR_HI08_HF1 0x10
98 #define PCXHR_ICR_HI08_HLEND 0x20
99 #define PCXHR_ICR_HI08_INIT 0x80
100 /* params used with PCXHR_DSP_CVR */
101 #define PCXHR_CVR_HI08_HC 0x80
102 /* params used with PCXHR_DSP_ISR */
103 #define PCXHR_ISR_HI08_RXDF 0x01
104 #define PCXHR_ISR_HI08_TXDE 0x02
105 #define PCXHR_ISR_HI08_TRDY 0x04
106 #define PCXHR_ISR_HI08_ERR 0x08
107 #define PCXHR_ISR_HI08_CHK 0x10
108 #define PCXHR_ISR_HI08_HREQ 0x80
109
110
111 /* constants used for delay in msec */
112 #define PCXHR_WAIT_DEFAULT 2
113 #define PCXHR_WAIT_IT 25
114 #define PCXHR_WAIT_IT_EXTRA 65
115
116 /*
117 * pcxhr_check_reg_bit - wait for the specified bit is set/reset on a register
118 * @reg: register to check
119 * @mask: bit mask
120 * @bit: resultant bit to be checked
121 * @time: time-out of loop in msec
122 *
123 * returns zero if a bit matches, or a negative error code.
124 */
125 static int pcxhr_check_reg_bit(struct pcxhr_mgr *mgr, unsigned int reg,
126 unsigned char mask, unsigned char bit, int time,
127 unsigned char* read)
128 {
129 int i = 0;
130 unsigned long end_time = jiffies + (time * HZ + 999) / 1000;
131 do {
132 *read = PCXHR_INPB(mgr, reg);
133 if ((*read & mask) == bit) {
134 if (i > 100)
135 snd_printdd("ATTENTION! check_reg(%x) "
136 "loopcount=%d\n",
137 reg, i);
138 return 0;
139 }
140 i++;
141 } while (time_after_eq(end_time, jiffies));
142 snd_printk(KERN_ERR
143 "pcxhr_check_reg_bit: timeout, reg=%x, mask=0x%x, val=%x\n",
144 reg, mask, *read);
145 return -EIO;
146 }
147
148 /* constants used with pcxhr_check_reg_bit() */
149 #define PCXHR_TIMEOUT_DSP 200
150
151
152 #define PCXHR_MASK_EXTRA_INFO 0x0000FE
153 #define PCXHR_MASK_IT_HF0 0x000100
154 #define PCXHR_MASK_IT_HF1 0x000200
155 #define PCXHR_MASK_IT_NO_HF0_HF1 0x000400
156 #define PCXHR_MASK_IT_MANAGE_HF5 0x000800
157 #define PCXHR_MASK_IT_WAIT 0x010000
158 #define PCXHR_MASK_IT_WAIT_EXTRA 0x020000
159
160 #define PCXHR_IT_SEND_BYTE_XILINX (0x0000003C | PCXHR_MASK_IT_HF0)
161 #define PCXHR_IT_TEST_XILINX (0x0000003C | PCXHR_MASK_IT_HF1 | \
162 PCXHR_MASK_IT_MANAGE_HF5)
163 #define PCXHR_IT_DOWNLOAD_BOOT (0x0000000C | PCXHR_MASK_IT_HF1 | \
164 PCXHR_MASK_IT_MANAGE_HF5 | \
165 PCXHR_MASK_IT_WAIT)
166 #define PCXHR_IT_RESET_BOARD_FUNC (0x0000000C | PCXHR_MASK_IT_HF0 | \
167 PCXHR_MASK_IT_MANAGE_HF5 | \
168 PCXHR_MASK_IT_WAIT_EXTRA)
169 #define PCXHR_IT_DOWNLOAD_DSP (0x0000000C | \
170 PCXHR_MASK_IT_MANAGE_HF5 | \
171 PCXHR_MASK_IT_WAIT)
172 #define PCXHR_IT_DEBUG (0x0000005A | PCXHR_MASK_IT_NO_HF0_HF1)
173 #define PCXHR_IT_RESET_SEMAPHORE (0x0000005C | PCXHR_MASK_IT_NO_HF0_HF1)
174 #define PCXHR_IT_MESSAGE (0x00000074 | PCXHR_MASK_IT_NO_HF0_HF1)
175 #define PCXHR_IT_RESET_CHK (0x00000076 | PCXHR_MASK_IT_NO_HF0_HF1)
176 #define PCXHR_IT_UPDATE_RBUFFER (0x00000078 | PCXHR_MASK_IT_NO_HF0_HF1)
177
178 static int pcxhr_send_it_dsp(struct pcxhr_mgr *mgr,
179 unsigned int itdsp, int atomic)
180 {
181 int err;
182 unsigned char reg;
183
184 if (itdsp & PCXHR_MASK_IT_MANAGE_HF5) {
185 /* clear hf5 bit */
186 PCXHR_OUTPL(mgr, PCXHR_PLX_MBOX0,
187 PCXHR_INPL(mgr, PCXHR_PLX_MBOX0) &
188 ~PCXHR_MBOX0_HF5);
189 }
190 if ((itdsp & PCXHR_MASK_IT_NO_HF0_HF1) == 0) {
191 reg = (PCXHR_ICR_HI08_RREQ |
192 PCXHR_ICR_HI08_TREQ |
193 PCXHR_ICR_HI08_HDRQ);
194 if (itdsp & PCXHR_MASK_IT_HF0)
195 reg |= PCXHR_ICR_HI08_HF0;
196 if (itdsp & PCXHR_MASK_IT_HF1)
197 reg |= PCXHR_ICR_HI08_HF1;
198 PCXHR_OUTPB(mgr, PCXHR_DSP_ICR, reg);
199 }
200 reg = (unsigned char)(((itdsp & PCXHR_MASK_EXTRA_INFO) >> 1) |
201 PCXHR_CVR_HI08_HC);
202 PCXHR_OUTPB(mgr, PCXHR_DSP_CVR, reg);
203 if (itdsp & PCXHR_MASK_IT_WAIT) {
204 if (atomic)
205 mdelay(PCXHR_WAIT_IT);
206 else
207 msleep(PCXHR_WAIT_IT);
208 }
209 if (itdsp & PCXHR_MASK_IT_WAIT_EXTRA) {
210 if (atomic)
211 mdelay(PCXHR_WAIT_IT_EXTRA);
212 else
213 msleep(PCXHR_WAIT_IT);
214 }
215 /* wait for CVR_HI08_HC == 0 */
216 err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_CVR, PCXHR_CVR_HI08_HC, 0,
217 PCXHR_TIMEOUT_DSP, &reg);
218 if (err) {
219 snd_printk(KERN_ERR "pcxhr_send_it_dsp : TIMEOUT CVR\n");
220 return err;
221 }
222 if (itdsp & PCXHR_MASK_IT_MANAGE_HF5) {
223 /* wait for hf5 bit */
224 err = pcxhr_check_reg_bit(mgr, PCXHR_PLX_MBOX0,
225 PCXHR_MBOX0_HF5,
226 PCXHR_MBOX0_HF5,
227 PCXHR_TIMEOUT_DSP,
228 &reg);
229 if (err) {
230 snd_printk(KERN_ERR
231 "pcxhr_send_it_dsp : TIMEOUT HF5\n");
232 return err;
233 }
234 }
235 return 0; /* retry not handled here */
236 }
237
238 void pcxhr_reset_xilinx_com(struct pcxhr_mgr *mgr)
239 {
240 /* reset second xilinx */
241 PCXHR_OUTPL(mgr, PCXHR_PLX_CHIPSC,
242 PCXHR_CHIPSC_INIT_VALUE & ~PCXHR_CHIPSC_RESET_XILINX);
243 }
244
245 static void pcxhr_enable_irq(struct pcxhr_mgr *mgr, int enable)
246 {
247 unsigned int reg = PCXHR_INPL(mgr, PCXHR_PLX_IRQCS);
248 /* enable/disable interrupts */
249 if (enable)
250 reg |= (PCXHR_IRQCS_ENABLE_PCIIRQ | PCXHR_IRQCS_ENABLE_PCIDB);
251 else
252 reg &= ~(PCXHR_IRQCS_ENABLE_PCIIRQ | PCXHR_IRQCS_ENABLE_PCIDB);
253 PCXHR_OUTPL(mgr, PCXHR_PLX_IRQCS, reg);
254 }
255
256 void pcxhr_reset_dsp(struct pcxhr_mgr *mgr)
257 {
258 /* disable interrupts */
259 pcxhr_enable_irq(mgr, 0);
260
261 /* let's reset the DSP */
262 PCXHR_OUTPB(mgr, PCXHR_DSP_RESET, 0);
263 msleep( PCXHR_WAIT_DEFAULT ); /* wait 2 msec */
264 PCXHR_OUTPB(mgr, PCXHR_DSP_RESET, 3);
265 msleep( PCXHR_WAIT_DEFAULT ); /* wait 2 msec */
266
267 /* reset mailbox */
268 PCXHR_OUTPL(mgr, PCXHR_PLX_MBOX0, 0);
269 }
270
271 void pcxhr_enable_dsp(struct pcxhr_mgr *mgr)
272 {
273 /* enable interrupts */
274 pcxhr_enable_irq(mgr, 1);
275 }
276
277 /*
278 * load the xilinx image
279 */
280 int pcxhr_load_xilinx_binary(struct pcxhr_mgr *mgr,
281 const struct firmware *xilinx, int second)
282 {
283 unsigned int i;
284 unsigned int chipsc;
285 unsigned char data;
286 unsigned char mask;
287 const unsigned char *image;
288
289 /* test first xilinx */
290 chipsc = PCXHR_INPL(mgr, PCXHR_PLX_CHIPSC);
291 /* REV01 cards do not support the PCXHR_CHIPSC_GPI_USERI bit anymore */
292 /* this bit will always be 1;
293 * no possibility to test presence of first xilinx
294 */
295 if(second) {
296 if ((chipsc & PCXHR_CHIPSC_GPI_USERI) == 0) {
297 snd_printk(KERN_ERR "error loading first xilinx\n");
298 return -EINVAL;
299 }
300 /* activate second xilinx */
301 chipsc |= PCXHR_CHIPSC_RESET_XILINX;
302 PCXHR_OUTPL(mgr, PCXHR_PLX_CHIPSC, chipsc);
303 msleep( PCXHR_WAIT_DEFAULT ); /* wait 2 msec */
304 }
305 image = xilinx->data;
306 for (i = 0; i < xilinx->size; i++, image++) {
307 data = *image;
308 mask = 0x80;
309 while (mask) {
310 chipsc &= ~(PCXHR_CHIPSC_DATA_CLK |
311 PCXHR_CHIPSC_DATA_IN);
312 if (data & mask)
313 chipsc |= PCXHR_CHIPSC_DATA_IN;
314 PCXHR_OUTPL(mgr, PCXHR_PLX_CHIPSC, chipsc);
315 chipsc |= PCXHR_CHIPSC_DATA_CLK;
316 PCXHR_OUTPL(mgr, PCXHR_PLX_CHIPSC, chipsc);
317 mask >>= 1;
318 }
319 /* don't take too much time in this loop... */
320 cond_resched();
321 }
322 chipsc &= ~(PCXHR_CHIPSC_DATA_CLK | PCXHR_CHIPSC_DATA_IN);
323 PCXHR_OUTPL(mgr, PCXHR_PLX_CHIPSC, chipsc);
324 /* wait 2 msec (time to boot the xilinx before any access) */
325 msleep( PCXHR_WAIT_DEFAULT );
326 return 0;
327 }
328
329 /*
330 * send an executable file to the DSP
331 */
332 static int pcxhr_download_dsp(struct pcxhr_mgr *mgr, const struct firmware *dsp)
333 {
334 int err;
335 unsigned int i;
336 unsigned int len;
337 const unsigned char *data;
338 unsigned char dummy;
339 /* check the length of boot image */
340 if (dsp->size <= 0)
341 return -EINVAL;
342 if (dsp->size % 3)
343 return -EINVAL;
344 if (snd_BUG_ON(!dsp->data))
345 return -EINVAL;
346 /* transfert data buffer from PC to DSP */
347 for (i = 0; i < dsp->size; i += 3) {
348 data = dsp->data + i;
349 if (i == 0) {
350 /* test data header consistency */
351 len = (unsigned int)((data[0]<<16) +
352 (data[1]<<8) +
353 data[2]);
354 if (len && (dsp->size != (len + 2) * 3))
355 return -EINVAL;
356 }
357 /* wait DSP ready for new transfer */
358 err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR,
359 PCXHR_ISR_HI08_TRDY,
360 PCXHR_ISR_HI08_TRDY,
361 PCXHR_TIMEOUT_DSP, &dummy);
362 if (err) {
363 snd_printk(KERN_ERR
364 "dsp loading error at position %d\n", i);
365 return err;
366 }
367 /* send host data */
368 PCXHR_OUTPB(mgr, PCXHR_DSP_TXH, data[0]);
369 PCXHR_OUTPB(mgr, PCXHR_DSP_TXM, data[1]);
370 PCXHR_OUTPB(mgr, PCXHR_DSP_TXL, data[2]);
371
372 /* don't take too much time in this loop... */
373 cond_resched();
374 }
375 /* give some time to boot the DSP */
376 msleep(PCXHR_WAIT_DEFAULT);
377 return 0;
378 }
379
380 /*
381 * load the eeprom image
382 */
383 int pcxhr_load_eeprom_binary(struct pcxhr_mgr *mgr,
384 const struct firmware *eeprom)
385 {
386 int err;
387 unsigned char reg;
388
389 /* init value of the ICR register */
390 reg = PCXHR_ICR_HI08_RREQ | PCXHR_ICR_HI08_TREQ | PCXHR_ICR_HI08_HDRQ;
391 if (PCXHR_INPL(mgr, PCXHR_PLX_MBOX0) & PCXHR_MBOX0_BOOT_HERE) {
392 /* no need to load the eeprom binary,
393 * but init the HI08 interface
394 */
395 PCXHR_OUTPB(mgr, PCXHR_DSP_ICR, reg | PCXHR_ICR_HI08_INIT);
396 msleep(PCXHR_WAIT_DEFAULT);
397 PCXHR_OUTPB(mgr, PCXHR_DSP_ICR, reg);
398 msleep(PCXHR_WAIT_DEFAULT);
399 snd_printdd("no need to load eeprom boot\n");
400 return 0;
401 }
402 PCXHR_OUTPB(mgr, PCXHR_DSP_ICR, reg);
403
404 err = pcxhr_download_dsp(mgr, eeprom);
405 if (err)
406 return err;
407 /* wait for chk bit */
408 return pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_CHK,
409 PCXHR_ISR_HI08_CHK, PCXHR_TIMEOUT_DSP, &reg);
410 }
411
412 /*
413 * load the boot image
414 */
415 int pcxhr_load_boot_binary(struct pcxhr_mgr *mgr, const struct firmware *boot)
416 {
417 int err;
418 unsigned int physaddr = mgr->hostport.addr;
419 unsigned char dummy;
420
421 /* send the hostport address to the DSP (only the upper 24 bit !) */
422 if (snd_BUG_ON(physaddr & 0xff))
423 return -EINVAL;
424 PCXHR_OUTPL(mgr, PCXHR_PLX_MBOX1, (physaddr >> 8));
425
426 err = pcxhr_send_it_dsp(mgr, PCXHR_IT_DOWNLOAD_BOOT, 0);
427 if (err)
428 return err;
429 /* clear hf5 bit */
430 PCXHR_OUTPL(mgr, PCXHR_PLX_MBOX0,
431 PCXHR_INPL(mgr, PCXHR_PLX_MBOX0) & ~PCXHR_MBOX0_HF5);
432
433 err = pcxhr_download_dsp(mgr, boot);
434 if (err)
435 return err;
436 /* wait for hf5 bit */
437 return pcxhr_check_reg_bit(mgr, PCXHR_PLX_MBOX0, PCXHR_MBOX0_HF5,
438 PCXHR_MBOX0_HF5, PCXHR_TIMEOUT_DSP, &dummy);
439 }
440
441 /*
442 * load the final dsp image
443 */
444 int pcxhr_load_dsp_binary(struct pcxhr_mgr *mgr, const struct firmware *dsp)
445 {
446 int err;
447 unsigned char dummy;
448 err = pcxhr_send_it_dsp(mgr, PCXHR_IT_RESET_BOARD_FUNC, 0);
449 if (err)
450 return err;
451 err = pcxhr_send_it_dsp(mgr, PCXHR_IT_DOWNLOAD_DSP, 0);
452 if (err)
453 return err;
454 err = pcxhr_download_dsp(mgr, dsp);
455 if (err)
456 return err;
457 /* wait for chk bit */
458 return pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR,
459 PCXHR_ISR_HI08_CHK,
460 PCXHR_ISR_HI08_CHK,
461 PCXHR_TIMEOUT_DSP, &dummy);
462 }
463
464
465 struct pcxhr_cmd_info {
466 u32 opcode; /* command word */
467 u16 st_length; /* status length */
468 u16 st_type; /* status type (RMH_SSIZE_XXX) */
469 };
470
471 /* RMH status type */
472 enum {
473 RMH_SSIZE_FIXED = 0, /* status size fix (st_length = 0..x) */
474 RMH_SSIZE_ARG = 1, /* status size given in the LSB byte */
475 RMH_SSIZE_MASK = 2, /* status size given in bitmask */
476 };
477
478 /*
479 * Array of DSP commands
480 */
481 static struct pcxhr_cmd_info pcxhr_dsp_cmds[] = {
482 [CMD_VERSION] = { 0x010000, 1, RMH_SSIZE_FIXED },
483 [CMD_SUPPORTED] = { 0x020000, 4, RMH_SSIZE_FIXED },
484 [CMD_TEST_IT] = { 0x040000, 1, RMH_SSIZE_FIXED },
485 [CMD_SEND_IRQA] = { 0x070001, 0, RMH_SSIZE_FIXED },
486 [CMD_ACCESS_IO_WRITE] = { 0x090000, 1, RMH_SSIZE_ARG },
487 [CMD_ACCESS_IO_READ] = { 0x094000, 1, RMH_SSIZE_ARG },
488 [CMD_ASYNC] = { 0x0a0000, 1, RMH_SSIZE_ARG },
489 [CMD_MODIFY_CLOCK] = { 0x0d0000, 0, RMH_SSIZE_FIXED },
490 [CMD_RESYNC_AUDIO_INPUTS] = { 0x0e0000, 0, RMH_SSIZE_FIXED },
491 [CMD_GET_DSP_RESOURCES] = { 0x100000, 4, RMH_SSIZE_FIXED },
492 [CMD_SET_TIMER_INTERRUPT] = { 0x110000, 0, RMH_SSIZE_FIXED },
493 [CMD_RES_PIPE] = { 0x400000, 0, RMH_SSIZE_FIXED },
494 [CMD_FREE_PIPE] = { 0x410000, 0, RMH_SSIZE_FIXED },
495 [CMD_CONF_PIPE] = { 0x422101, 0, RMH_SSIZE_FIXED },
496 [CMD_STOP_PIPE] = { 0x470004, 0, RMH_SSIZE_FIXED },
497 [CMD_PIPE_SAMPLE_COUNT] = { 0x49a000, 2, RMH_SSIZE_FIXED },
498 [CMD_CAN_START_PIPE] = { 0x4b0000, 1, RMH_SSIZE_FIXED },
499 [CMD_START_STREAM] = { 0x802000, 0, RMH_SSIZE_FIXED },
500 [CMD_STREAM_OUT_LEVEL_ADJUST] = { 0x822000, 0, RMH_SSIZE_FIXED },
501 [CMD_STOP_STREAM] = { 0x832000, 0, RMH_SSIZE_FIXED },
502 [CMD_UPDATE_R_BUFFERS] = { 0x840000, 0, RMH_SSIZE_FIXED },
503 [CMD_FORMAT_STREAM_OUT] = { 0x860000, 0, RMH_SSIZE_FIXED },
504 [CMD_FORMAT_STREAM_IN] = { 0x870000, 0, RMH_SSIZE_FIXED },
505 [CMD_STREAM_SAMPLE_COUNT] = { 0x902000, 2, RMH_SSIZE_FIXED },
506 [CMD_AUDIO_LEVEL_ADJUST] = { 0xc22000, 0, RMH_SSIZE_FIXED },
507 };
508
509 #ifdef CONFIG_SND_DEBUG_VERBOSE
510 static char* cmd_names[] = {
511 [CMD_VERSION] = "CMD_VERSION",
512 [CMD_SUPPORTED] = "CMD_SUPPORTED",
513 [CMD_TEST_IT] = "CMD_TEST_IT",
514 [CMD_SEND_IRQA] = "CMD_SEND_IRQA",
515 [CMD_ACCESS_IO_WRITE] = "CMD_ACCESS_IO_WRITE",
516 [CMD_ACCESS_IO_READ] = "CMD_ACCESS_IO_READ",
517 [CMD_ASYNC] = "CMD_ASYNC",
518 [CMD_MODIFY_CLOCK] = "CMD_MODIFY_CLOCK",
519 [CMD_RESYNC_AUDIO_INPUTS] = "CMD_RESYNC_AUDIO_INPUTS",
520 [CMD_GET_DSP_RESOURCES] = "CMD_GET_DSP_RESOURCES",
521 [CMD_SET_TIMER_INTERRUPT] = "CMD_SET_TIMER_INTERRUPT",
522 [CMD_RES_PIPE] = "CMD_RES_PIPE",
523 [CMD_FREE_PIPE] = "CMD_FREE_PIPE",
524 [CMD_CONF_PIPE] = "CMD_CONF_PIPE",
525 [CMD_STOP_PIPE] = "CMD_STOP_PIPE",
526 [CMD_PIPE_SAMPLE_COUNT] = "CMD_PIPE_SAMPLE_COUNT",
527 [CMD_CAN_START_PIPE] = "CMD_CAN_START_PIPE",
528 [CMD_START_STREAM] = "CMD_START_STREAM",
529 [CMD_STREAM_OUT_LEVEL_ADJUST] = "CMD_STREAM_OUT_LEVEL_ADJUST",
530 [CMD_STOP_STREAM] = "CMD_STOP_STREAM",
531 [CMD_UPDATE_R_BUFFERS] = "CMD_UPDATE_R_BUFFERS",
532 [CMD_FORMAT_STREAM_OUT] = "CMD_FORMAT_STREAM_OUT",
533 [CMD_FORMAT_STREAM_IN] = "CMD_FORMAT_STREAM_IN",
534 [CMD_STREAM_SAMPLE_COUNT] = "CMD_STREAM_SAMPLE_COUNT",
535 [CMD_AUDIO_LEVEL_ADJUST] = "CMD_AUDIO_LEVEL_ADJUST",
536 };
537 #endif
538
539
540 static int pcxhr_read_rmh_status(struct pcxhr_mgr *mgr, struct pcxhr_rmh *rmh)
541 {
542 int err;
543 int i;
544 u32 data;
545 u32 size_mask;
546 unsigned char reg;
547 int max_stat_len;
548
549 if (rmh->stat_len < PCXHR_SIZE_MAX_STATUS)
550 max_stat_len = PCXHR_SIZE_MAX_STATUS;
551 else max_stat_len = rmh->stat_len;
552
553 for (i = 0; i < rmh->stat_len; i++) {
554 /* wait for receiver full */
555 err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR,
556 PCXHR_ISR_HI08_RXDF,
557 PCXHR_ISR_HI08_RXDF,
558 PCXHR_TIMEOUT_DSP, &reg);
559 if (err) {
560 snd_printk(KERN_ERR "ERROR RMH stat: "
561 "ISR:RXDF=1 (ISR = %x; i=%d )\n",
562 reg, i);
563 return err;
564 }
565 /* read data */
566 data = PCXHR_INPB(mgr, PCXHR_DSP_TXH) << 16;
567 data |= PCXHR_INPB(mgr, PCXHR_DSP_TXM) << 8;
568 data |= PCXHR_INPB(mgr, PCXHR_DSP_TXL);
569
570 /* need to update rmh->stat_len on the fly ?? */
571 if (!i) {
572 if (rmh->dsp_stat != RMH_SSIZE_FIXED) {
573 if (rmh->dsp_stat == RMH_SSIZE_ARG) {
574 rmh->stat_len = (data & 0x0000ff) + 1;
575 data &= 0xffff00;
576 } else {
577 /* rmh->dsp_stat == RMH_SSIZE_MASK */
578 rmh->stat_len = 1;
579 size_mask = data;
580 while (size_mask) {
581 if (size_mask & 1)
582 rmh->stat_len++;
583 size_mask >>= 1;
584 }
585 }
586 }
587 }
588 #ifdef CONFIG_SND_DEBUG_VERBOSE
589 if (rmh->cmd_idx < CMD_LAST_INDEX)
590 snd_printdd(" stat[%d]=%x\n", i, data);
591 #endif
592 if (i < max_stat_len)
593 rmh->stat[i] = data;
594 }
595 if (rmh->stat_len > max_stat_len) {
596 snd_printdd("PCXHR : rmh->stat_len=%x too big\n",
597 rmh->stat_len);
598 rmh->stat_len = max_stat_len;
599 }
600 return 0;
601 }
602
603 static int pcxhr_send_msg_nolock(struct pcxhr_mgr *mgr, struct pcxhr_rmh *rmh)
604 {
605 int err;
606 int i;
607 u32 data;
608 unsigned char reg;
609
610 if (snd_BUG_ON(rmh->cmd_len >= PCXHR_SIZE_MAX_CMD))
611 return -EINVAL;
612 err = pcxhr_send_it_dsp(mgr, PCXHR_IT_MESSAGE, 1);
613 if (err) {
614 snd_printk(KERN_ERR "pcxhr_send_message : ED_DSP_CRASHED\n");
615 return err;
616 }
617 /* wait for chk bit */
618 err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_CHK,
619 PCXHR_ISR_HI08_CHK, PCXHR_TIMEOUT_DSP, &reg);
620 if (err)
621 return err;
622 /* reset irq chk */
623 err = pcxhr_send_it_dsp(mgr, PCXHR_IT_RESET_CHK, 1);
624 if (err)
625 return err;
626 /* wait for chk bit == 0*/
627 err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_CHK, 0,
628 PCXHR_TIMEOUT_DSP, &reg);
629 if (err)
630 return err;
631
632 data = rmh->cmd[0];
633
634 if (rmh->cmd_len > 1)
635 data |= 0x008000; /* MASK_MORE_THAN_1_WORD_COMMAND */
636 else
637 data &= 0xff7fff; /* MASK_1_WORD_COMMAND */
638 #ifdef CONFIG_SND_DEBUG_VERBOSE
639 if (rmh->cmd_idx < CMD_LAST_INDEX)
640 snd_printdd("MSG cmd[0]=%x (%s)\n",
641 data, cmd_names[rmh->cmd_idx]);
642 #endif
643
644 err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_TRDY,
645 PCXHR_ISR_HI08_TRDY, PCXHR_TIMEOUT_DSP, &reg);
646 if (err)
647 return err;
648 PCXHR_OUTPB(mgr, PCXHR_DSP_TXH, (data>>16)&0xFF);
649 PCXHR_OUTPB(mgr, PCXHR_DSP_TXM, (data>>8)&0xFF);
650 PCXHR_OUTPB(mgr, PCXHR_DSP_TXL, (data&0xFF));
651
652 if (rmh->cmd_len > 1) {
653 /* send length */
654 data = rmh->cmd_len - 1;
655 err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR,
656 PCXHR_ISR_HI08_TRDY,
657 PCXHR_ISR_HI08_TRDY,
658 PCXHR_TIMEOUT_DSP, &reg);
659 if (err)
660 return err;
661 PCXHR_OUTPB(mgr, PCXHR_DSP_TXH, (data>>16)&0xFF);
662 PCXHR_OUTPB(mgr, PCXHR_DSP_TXM, (data>>8)&0xFF);
663 PCXHR_OUTPB(mgr, PCXHR_DSP_TXL, (data&0xFF));
664
665 for (i=1; i < rmh->cmd_len; i++) {
666 /* send other words */
667 data = rmh->cmd[i];
668 #ifdef CONFIG_SND_DEBUG_VERBOSE
669 if (rmh->cmd_idx < CMD_LAST_INDEX)
670 snd_printdd(" cmd[%d]=%x\n", i, data);
671 #endif
672 err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR,
673 PCXHR_ISR_HI08_TRDY,
674 PCXHR_ISR_HI08_TRDY,
675 PCXHR_TIMEOUT_DSP, &reg);
676 if (err)
677 return err;
678 PCXHR_OUTPB(mgr, PCXHR_DSP_TXH, (data>>16)&0xFF);
679 PCXHR_OUTPB(mgr, PCXHR_DSP_TXM, (data>>8)&0xFF);
680 PCXHR_OUTPB(mgr, PCXHR_DSP_TXL, (data&0xFF));
681 }
682 }
683 /* wait for chk bit */
684 err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_CHK,
685 PCXHR_ISR_HI08_CHK, PCXHR_TIMEOUT_DSP, &reg);
686 if (err)
687 return err;
688 /* test status ISR */
689 if (reg & PCXHR_ISR_HI08_ERR) {
690 /* ERROR, wait for receiver full */
691 err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR,
692 PCXHR_ISR_HI08_RXDF,
693 PCXHR_ISR_HI08_RXDF,
694 PCXHR_TIMEOUT_DSP, &reg);
695 if (err) {
696 snd_printk(KERN_ERR "ERROR RMH: ISR:RXDF=1 (ISR = %x)\n", reg);
697 return err;
698 }
699 /* read error code */
700 data = PCXHR_INPB(mgr, PCXHR_DSP_TXH) << 16;
701 data |= PCXHR_INPB(mgr, PCXHR_DSP_TXM) << 8;
702 data |= PCXHR_INPB(mgr, PCXHR_DSP_TXL);
703 snd_printk(KERN_ERR "ERROR RMH(%d): 0x%x\n",
704 rmh->cmd_idx, data);
705 err = -EINVAL;
706 } else {
707 /* read the response data */
708 err = pcxhr_read_rmh_status(mgr, rmh);
709 }
710 /* reset semaphore */
711 if (pcxhr_send_it_dsp(mgr, PCXHR_IT_RESET_SEMAPHORE, 1) < 0)
712 return -EIO;
713 return err;
714 }
715
716
717 /**
718 * pcxhr_init_rmh - initialize the RMH instance
719 * @rmh: the rmh pointer to be initialized
720 * @cmd: the rmh command to be set
721 */
722 void pcxhr_init_rmh(struct pcxhr_rmh *rmh, int cmd)
723 {
724 if (snd_BUG_ON(cmd >= CMD_LAST_INDEX))
725 return;
726 rmh->cmd[0] = pcxhr_dsp_cmds[cmd].opcode;
727 rmh->cmd_len = 1;
728 rmh->stat_len = pcxhr_dsp_cmds[cmd].st_length;
729 rmh->dsp_stat = pcxhr_dsp_cmds[cmd].st_type;
730 rmh->cmd_idx = cmd;
731 }
732
733
734 void pcxhr_set_pipe_cmd_params(struct pcxhr_rmh *rmh, int capture,
735 unsigned int param1, unsigned int param2,
736 unsigned int param3)
737 {
738 snd_BUG_ON(param1 > MASK_FIRST_FIELD);
739 if (capture)
740 rmh->cmd[0] |= 0x800; /* COMMAND_RECORD_MASK */
741 if (param1)
742 rmh->cmd[0] |= (param1 << FIELD_SIZE);
743 if (param2) {
744 snd_BUG_ON(param2 > MASK_FIRST_FIELD);
745 rmh->cmd[0] |= param2;
746 }
747 if(param3) {
748 snd_BUG_ON(param3 > MASK_DSP_WORD);
749 rmh->cmd[1] = param3;
750 rmh->cmd_len = 2;
751 }
752 }
753
754 /*
755 * pcxhr_send_msg - send a DSP message with spinlock
756 * @rmh: the rmh record to send and receive
757 *
758 * returns 0 if successful, or a negative error code.
759 */
760 int pcxhr_send_msg(struct pcxhr_mgr *mgr, struct pcxhr_rmh *rmh)
761 {
762 unsigned long flags;
763 int err;
764 spin_lock_irqsave(&mgr->msg_lock, flags);
765 err = pcxhr_send_msg_nolock(mgr, rmh);
766 spin_unlock_irqrestore(&mgr->msg_lock, flags);
767 return err;
768 }
769
770 static inline int pcxhr_pipes_running(struct pcxhr_mgr *mgr)
771 {
772 int start_mask = PCXHR_INPL(mgr, PCXHR_PLX_MBOX2);
773 /* least segnificant 12 bits are the pipe states
774 * for the playback audios
775 * next 12 bits are the pipe states for the capture audios
776 * (PCXHR_PIPE_STATE_CAPTURE_OFFSET)
777 */
778 start_mask &= 0xffffff;
779 snd_printdd("CMD_PIPE_STATE MBOX2=0x%06x\n", start_mask);
780 return start_mask;
781 }
782
783 #define PCXHR_PIPE_STATE_CAPTURE_OFFSET 12
784 #define MAX_WAIT_FOR_DSP 20
785
786 static int pcxhr_prepair_pipe_start(struct pcxhr_mgr *mgr,
787 int audio_mask, int *retry)
788 {
789 struct pcxhr_rmh rmh;
790 int err;
791 int audio = 0;
792
793 *retry = 0;
794 while (audio_mask) {
795 if (audio_mask & 1) {
796 pcxhr_init_rmh(&rmh, CMD_CAN_START_PIPE);
797 if (audio < PCXHR_PIPE_STATE_CAPTURE_OFFSET) {
798 /* can start playback pipe */
799 pcxhr_set_pipe_cmd_params(&rmh, 0, audio, 0, 0);
800 } else {
801 /* can start capture pipe */
802 pcxhr_set_pipe_cmd_params(&rmh, 1, audio -
803 PCXHR_PIPE_STATE_CAPTURE_OFFSET,
804 0, 0);
805 }
806 err = pcxhr_send_msg(mgr, &rmh);
807 if (err) {
808 snd_printk(KERN_ERR
809 "error pipe start "
810 "(CMD_CAN_START_PIPE) err=%x!\n",
811 err);
812 return err;
813 }
814 /* if the pipe couldn't be prepaired for start,
815 * retry it later
816 */
817 if (rmh.stat[0] == 0)
818 *retry |= (1<<audio);
819 }
820 audio_mask>>=1;
821 audio++;
822 }
823 return 0;
824 }
825
826 static int pcxhr_stop_pipes(struct pcxhr_mgr *mgr, int audio_mask)
827 {
828 struct pcxhr_rmh rmh;
829 int err;
830 int audio = 0;
831
832 while (audio_mask) {
833 if (audio_mask & 1) {
834 pcxhr_init_rmh(&rmh, CMD_STOP_PIPE);
835 if (audio < PCXHR_PIPE_STATE_CAPTURE_OFFSET) {
836 /* stop playback pipe */
837 pcxhr_set_pipe_cmd_params(&rmh, 0, audio, 0, 0);
838 } else {
839 /* stop capture pipe */
840 pcxhr_set_pipe_cmd_params(&rmh, 1, audio -
841 PCXHR_PIPE_STATE_CAPTURE_OFFSET,
842 0, 0);
843 }
844 err = pcxhr_send_msg(mgr, &rmh);
845 if (err) {
846 snd_printk(KERN_ERR
847 "error pipe stop "
848 "(CMD_STOP_PIPE) err=%x!\n", err);
849 return err;
850 }
851 }
852 audio_mask>>=1;
853 audio++;
854 }
855 return 0;
856 }
857
858 static int pcxhr_toggle_pipes(struct pcxhr_mgr *mgr, int audio_mask)
859 {
860 struct pcxhr_rmh rmh;
861 int err;
862 int audio = 0;
863
864 while (audio_mask) {
865 if (audio_mask & 1) {
866 pcxhr_init_rmh(&rmh, CMD_CONF_PIPE);
867 if (audio < PCXHR_PIPE_STATE_CAPTURE_OFFSET)
868 pcxhr_set_pipe_cmd_params(&rmh, 0, 0, 0,
869 1 << audio);
870 else
871 pcxhr_set_pipe_cmd_params(&rmh, 1, 0, 0,
872 1 << (audio - PCXHR_PIPE_STATE_CAPTURE_OFFSET));
873 err = pcxhr_send_msg(mgr, &rmh);
874 if (err) {
875 snd_printk(KERN_ERR
876 "error pipe start "
877 "(CMD_CONF_PIPE) err=%x!\n", err);
878 return err;
879 }
880 }
881 audio_mask>>=1;
882 audio++;
883 }
884 /* now fire the interrupt on the card */
885 pcxhr_init_rmh(&rmh, CMD_SEND_IRQA);
886 err = pcxhr_send_msg(mgr, &rmh);
887 if (err) {
888 snd_printk(KERN_ERR
889 "error pipe start (CMD_SEND_IRQA) err=%x!\n",
890 err);
891 return err;
892 }
893 return 0;
894 }
895
896
897
898 int pcxhr_set_pipe_state(struct pcxhr_mgr *mgr, int playback_mask,
899 int capture_mask, int start)
900 {
901 int state, i, err;
902 int audio_mask;
903
904 #ifdef CONFIG_SND_DEBUG_VERBOSE
905 struct timeval my_tv1, my_tv2;
906 do_gettimeofday(&my_tv1);
907 #endif
908 audio_mask = (playback_mask |
909 (capture_mask << PCXHR_PIPE_STATE_CAPTURE_OFFSET));
910 /* current pipe state (playback + record) */
911 state = pcxhr_pipes_running(mgr);
912 snd_printdd("pcxhr_set_pipe_state %s (mask %x current %x)\n",
913 start ? "START" : "STOP", audio_mask, state);
914 if (start) {
915 /* start only pipes that are not yet started */
916 audio_mask &= ~state;
917 state = audio_mask;
918 for (i = 0; i < MAX_WAIT_FOR_DSP; i++) {
919 err = pcxhr_prepair_pipe_start(mgr, state, &state);
920 if (err)
921 return err;
922 if (state == 0)
923 break; /* success, all pipes prepaired */
924 mdelay(1); /* wait 1 millisecond and retry */
925 }
926 } else {
927 audio_mask &= state; /* stop only pipes that are started */
928 }
929 if (audio_mask == 0)
930 return 0;
931
932 err = pcxhr_toggle_pipes(mgr, audio_mask);
933 if (err)
934 return err;
935
936 i = 0;
937 while (1) {
938 state = pcxhr_pipes_running(mgr);
939 /* have all pipes the new state ? */
940 if ((state & audio_mask) == (start ? audio_mask : 0))
941 break;
942 if (++i >= MAX_WAIT_FOR_DSP * 100) {
943 snd_printk(KERN_ERR "error pipe start/stop\n");
944 return -EBUSY;
945 }
946 udelay(10); /* wait 10 microseconds */
947 }
948 if (!start) {
949 err = pcxhr_stop_pipes(mgr, audio_mask);
950 if (err)
951 return err;
952 }
953 #ifdef CONFIG_SND_DEBUG_VERBOSE
954 do_gettimeofday(&my_tv2);
955 snd_printdd("***SET PIPE STATE*** TIME = %ld (err = %x)\n",
956 (long)(my_tv2.tv_usec - my_tv1.tv_usec), err);
957 #endif
958 return 0;
959 }
960
961 int pcxhr_write_io_num_reg_cont(struct pcxhr_mgr *mgr, unsigned int mask,
962 unsigned int value, int *changed)
963 {
964 struct pcxhr_rmh rmh;
965 unsigned long flags;
966 int err;
967
968 spin_lock_irqsave(&mgr->msg_lock, flags);
969 if ((mgr->io_num_reg_cont & mask) == value) {
970 snd_printdd("IO_NUM_REG_CONT mask %x already is set to %x\n",
971 mask, value);
972 if (changed)
973 *changed = 0;
974 spin_unlock_irqrestore(&mgr->msg_lock, flags);
975 return 0; /* already programmed */
976 }
977 pcxhr_init_rmh(&rmh, CMD_ACCESS_IO_WRITE);
978 rmh.cmd[0] |= IO_NUM_REG_CONT;
979 rmh.cmd[1] = mask;
980 rmh.cmd[2] = value;
981 rmh.cmd_len = 3;
982 err = pcxhr_send_msg_nolock(mgr, &rmh);
983 if (err == 0) {
984 mgr->io_num_reg_cont &= ~mask;
985 mgr->io_num_reg_cont |= value;
986 if (changed)
987 *changed = 1;
988 }
989 spin_unlock_irqrestore(&mgr->msg_lock, flags);
990 return err;
991 }
992
993 #define PCXHR_IRQ_TIMER 0x000300
994 #define PCXHR_IRQ_FREQ_CHANGE 0x000800
995 #define PCXHR_IRQ_TIME_CODE 0x001000
996 #define PCXHR_IRQ_NOTIFY 0x002000
997 #define PCXHR_IRQ_ASYNC 0x008000
998 #define PCXHR_IRQ_MASK 0x00bb00
999 #define PCXHR_FATAL_DSP_ERR 0xff0000
1000
1001 enum pcxhr_async_err_src {
1002 PCXHR_ERR_PIPE,
1003 PCXHR_ERR_STREAM,
1004 PCXHR_ERR_AUDIO
1005 };
1006
1007 static int pcxhr_handle_async_err(struct pcxhr_mgr *mgr, u32 err,
1008 enum pcxhr_async_err_src err_src, int pipe,
1009 int is_capture)
1010 {
1011 #ifdef CONFIG_SND_DEBUG_VERBOSE
1012 static char* err_src_name[] = {
1013 [PCXHR_ERR_PIPE] = "Pipe",
1014 [PCXHR_ERR_STREAM] = "Stream",
1015 [PCXHR_ERR_AUDIO] = "Audio"
1016 };
1017 #endif
1018 if (err & 0xfff)
1019 err &= 0xfff;
1020 else
1021 err = ((err >> 12) & 0xfff);
1022 if (!err)
1023 return 0;
1024 snd_printdd("CMD_ASYNC : Error %s %s Pipe %d err=%x\n",
1025 err_src_name[err_src],
1026 is_capture ? "Record" : "Play", pipe, err);
1027 if (err == 0xe01)
1028 mgr->async_err_stream_xrun++;
1029 else if (err == 0xe10)
1030 mgr->async_err_pipe_xrun++;
1031 else
1032 mgr->async_err_other_last = (int)err;
1033 return 1;
1034 }
1035
1036
1037 void pcxhr_msg_tasklet(unsigned long arg)
1038 {
1039 struct pcxhr_mgr *mgr = (struct pcxhr_mgr *)(arg);
1040 struct pcxhr_rmh *prmh = mgr->prmh;
1041 int err;
1042 int i, j;
1043
1044 if (mgr->src_it_dsp & PCXHR_IRQ_FREQ_CHANGE)
1045 snd_printdd("TASKLET : PCXHR_IRQ_FREQ_CHANGE event occured\n");
1046 if (mgr->src_it_dsp & PCXHR_IRQ_TIME_CODE)
1047 snd_printdd("TASKLET : PCXHR_IRQ_TIME_CODE event occured\n");
1048 if (mgr->src_it_dsp & PCXHR_IRQ_NOTIFY)
1049 snd_printdd("TASKLET : PCXHR_IRQ_NOTIFY event occured\n");
1050 if (mgr->src_it_dsp & (PCXHR_IRQ_FREQ_CHANGE | PCXHR_IRQ_TIME_CODE)) {
1051 /* clear events FREQ_CHANGE and TIME_CODE */
1052 pcxhr_init_rmh(prmh, CMD_TEST_IT);
1053 err = pcxhr_send_msg(mgr, prmh);
1054 snd_printdd("CMD_TEST_IT : err=%x, stat=%x\n",
1055 err, prmh->stat[0]);
1056 }
1057 if (mgr->src_it_dsp & PCXHR_IRQ_ASYNC) {
1058 snd_printdd("TASKLET : PCXHR_IRQ_ASYNC event occured\n");
1059
1060 pcxhr_init_rmh(prmh, CMD_ASYNC);
1061 prmh->cmd[0] |= 1; /* add SEL_ASYNC_EVENTS */
1062 /* this is the only one extra long response command */
1063 prmh->stat_len = PCXHR_SIZE_MAX_LONG_STATUS;
1064 err = pcxhr_send_msg(mgr, prmh);
1065 if (err)
1066 snd_printk(KERN_ERR "ERROR pcxhr_msg_tasklet=%x;\n",
1067 err);
1068 i = 1;
1069 while (i < prmh->stat_len) {
1070 int nb_audio = ((prmh->stat[i] >> FIELD_SIZE) &
1071 MASK_FIRST_FIELD);
1072 int nb_stream = ((prmh->stat[i] >> (2*FIELD_SIZE)) &
1073 MASK_FIRST_FIELD);
1074 int pipe = prmh->stat[i] & MASK_FIRST_FIELD;
1075 int is_capture = prmh->stat[i] & 0x400000;
1076 u32 err2;
1077
1078 if (prmh->stat[i] & 0x800000) { /* if BIT_END */
1079 snd_printdd("TASKLET : End%sPipe %d\n",
1080 is_capture ? "Record" : "Play",
1081 pipe);
1082 }
1083 i++;
1084 err2 = prmh->stat[i] ? prmh->stat[i] : prmh->stat[i+1];
1085 if (err2)
1086 pcxhr_handle_async_err(mgr, err2,
1087 PCXHR_ERR_PIPE,
1088 pipe, is_capture);
1089 i += 2;
1090 for (j = 0; j < nb_stream; j++) {
1091 err2 = prmh->stat[i] ?
1092 prmh->stat[i] : prmh->stat[i+1];
1093 if (err2)
1094 pcxhr_handle_async_err(mgr, err2,
1095 PCXHR_ERR_STREAM,
1096 pipe,
1097 is_capture);
1098 i += 2;
1099 }
1100 for (j = 0; j < nb_audio; j++) {
1101 err2 = prmh->stat[i] ?
1102 prmh->stat[i] : prmh->stat[i+1];
1103 if (err2)
1104 pcxhr_handle_async_err(mgr, err2,
1105 PCXHR_ERR_AUDIO,
1106 pipe,
1107 is_capture);
1108 i += 2;
1109 }
1110 }
1111 }
1112 }
1113
1114 static u_int64_t pcxhr_stream_read_position(struct pcxhr_mgr *mgr,
1115 struct pcxhr_stream *stream)
1116 {
1117 u_int64_t hw_sample_count;
1118 struct pcxhr_rmh rmh;
1119 int err, stream_mask;
1120
1121 stream_mask = stream->pipe->is_capture ? 1 : 1<<stream->substream->number;
1122
1123 /* get sample count for one stream */
1124 pcxhr_init_rmh(&rmh, CMD_STREAM_SAMPLE_COUNT);
1125 pcxhr_set_pipe_cmd_params(&rmh, stream->pipe->is_capture,
1126 stream->pipe->first_audio, 0, stream_mask);
1127 /* rmh.stat_len = 2; */ /* 2 resp data for each stream of the pipe */
1128
1129 err = pcxhr_send_msg(mgr, &rmh);
1130 if (err)
1131 return 0;
1132
1133 hw_sample_count = ((u_int64_t)rmh.stat[0]) << 24;
1134 hw_sample_count += (u_int64_t)rmh.stat[1];
1135
1136 snd_printdd("stream %c%d : abs samples real(%ld) timer(%ld)\n",
1137 stream->pipe->is_capture ? 'C' : 'P',
1138 stream->substream->number,
1139 (long unsigned int)hw_sample_count,
1140 (long unsigned int)(stream->timer_abs_periods +
1141 stream->timer_period_frag +
1142 mgr->granularity));
1143 return hw_sample_count;
1144 }
1145
1146 static void pcxhr_update_timer_pos(struct pcxhr_mgr *mgr,
1147 struct pcxhr_stream *stream,
1148 int samples_to_add)
1149 {
1150 if (stream->substream &&
1151 (stream->status == PCXHR_STREAM_STATUS_RUNNING)) {
1152 u_int64_t new_sample_count;
1153 int elapsed = 0;
1154 int hardware_read = 0;
1155 struct snd_pcm_runtime *runtime = stream->substream->runtime;
1156
1157 if (samples_to_add < 0) {
1158 stream->timer_is_synced = 0;
1159 /* add default if no hardware_read possible */
1160 samples_to_add = mgr->granularity;
1161 }
1162
1163 if (!stream->timer_is_synced) {
1164 if ((stream->timer_abs_periods != 0) ||
1165 ((stream->timer_period_frag + samples_to_add) >=
1166 runtime->period_size)) {
1167 new_sample_count =
1168 pcxhr_stream_read_position(mgr, stream);
1169 hardware_read = 1;
1170 if (new_sample_count >= mgr->granularity) {
1171 /* sub security offset because of
1172 * jitter and finer granularity of
1173 * dsp time (MBOX4)
1174 */
1175 new_sample_count -= mgr->granularity;
1176 stream->timer_is_synced = 1;
1177 }
1178 }
1179 }
1180 if (!hardware_read) {
1181 /* if we didn't try to sync the position, increment it
1182 * by PCXHR_GRANULARITY every timer interrupt
1183 */
1184 new_sample_count = stream->timer_abs_periods +
1185 stream->timer_period_frag + samples_to_add;
1186 }
1187 while (1) {
1188 u_int64_t new_elapse_pos = stream->timer_abs_periods +
1189 runtime->period_size;
1190 if (new_elapse_pos > new_sample_count)
1191 break;
1192 elapsed = 1;
1193 stream->timer_buf_periods++;
1194 if (stream->timer_buf_periods >= runtime->periods)
1195 stream->timer_buf_periods = 0;
1196 stream->timer_abs_periods = new_elapse_pos;
1197 }
1198 if (new_sample_count >= stream->timer_abs_periods) {
1199 stream->timer_period_frag =
1200 (u_int32_t)(new_sample_count -
1201 stream->timer_abs_periods);
1202 } else {
1203 snd_printk(KERN_ERR
1204 "ERROR new_sample_count too small ??? %ld\n",
1205 (long unsigned int)new_sample_count);
1206 }
1207
1208 if (elapsed) {
1209 spin_unlock(&mgr->lock);
1210 snd_pcm_period_elapsed(stream->substream);
1211 spin_lock(&mgr->lock);
1212 }
1213 }
1214 }
1215
1216 irqreturn_t pcxhr_interrupt(int irq, void *dev_id)
1217 {
1218 struct pcxhr_mgr *mgr = dev_id;
1219 unsigned int reg;
1220 int i, j;
1221 struct snd_pcxhr *chip;
1222
1223 spin_lock(&mgr->lock);
1224
1225 reg = PCXHR_INPL(mgr, PCXHR_PLX_IRQCS);
1226 if (! (reg & PCXHR_IRQCS_ACTIVE_PCIDB)) {
1227 spin_unlock(&mgr->lock);
1228 /* this device did not cause the interrupt */
1229 return IRQ_NONE;
1230 }
1231
1232 /* clear interrupt */
1233 reg = PCXHR_INPL(mgr, PCXHR_PLX_L2PCIDB);
1234 PCXHR_OUTPL(mgr, PCXHR_PLX_L2PCIDB, reg);
1235
1236 /* timer irq occured */
1237 if (reg & PCXHR_IRQ_TIMER) {
1238 int timer_toggle = reg & PCXHR_IRQ_TIMER;
1239 /* is a 24 bit counter */
1240 int dsp_time_new =
1241 PCXHR_INPL(mgr, PCXHR_PLX_MBOX4) & PCXHR_DSP_TIME_MASK;
1242 int dsp_time_diff = dsp_time_new - mgr->dsp_time_last;
1243
1244 if ((dsp_time_diff < 0) &&
1245 (mgr->dsp_time_last != PCXHR_DSP_TIME_INVALID)) {
1246 snd_printdd("ERROR DSP TIME old(%d) new(%d) -> "
1247 "resynchronize all streams\n",
1248 mgr->dsp_time_last, dsp_time_new);
1249 mgr->dsp_time_err++;
1250 }
1251 #ifdef CONFIG_SND_DEBUG_VERBOSE
1252 if (dsp_time_diff == 0)
1253 snd_printdd("ERROR DSP TIME NO DIFF time(%d)\n",
1254 dsp_time_new);
1255 else if (dsp_time_diff >= (2*mgr->granularity))
1256 snd_printdd("ERROR DSP TIME TOO BIG old(%d) add(%d)\n",
1257 mgr->dsp_time_last,
1258 dsp_time_new - mgr->dsp_time_last);
1259 else if (dsp_time_diff % mgr->granularity)
1260 snd_printdd("ERROR DSP TIME increased by %d\n",
1261 dsp_time_diff);
1262 #endif
1263 mgr->dsp_time_last = dsp_time_new;
1264
1265 if (timer_toggle == mgr->timer_toggle) {
1266 snd_printdd("ERROR TIMER TOGGLE\n");
1267 mgr->dsp_time_err++;
1268 }
1269 mgr->timer_toggle = timer_toggle;
1270
1271 reg &= ~PCXHR_IRQ_TIMER;
1272 for (i = 0; i < mgr->num_cards; i++) {
1273 chip = mgr->chip[i];
1274 for (j = 0; j < chip->nb_streams_capt; j++)
1275 pcxhr_update_timer_pos(mgr,
1276 &chip->capture_stream[j],
1277 dsp_time_diff);
1278 }
1279 for (i = 0; i < mgr->num_cards; i++) {
1280 chip = mgr->chip[i];
1281 for (j = 0; j < chip->nb_streams_play; j++)
1282 pcxhr_update_timer_pos(mgr,
1283 &chip->playback_stream[j],
1284 dsp_time_diff);
1285 }
1286 }
1287 /* other irq's handled in the tasklet */
1288 if (reg & PCXHR_IRQ_MASK) {
1289 if (reg & PCXHR_IRQ_ASYNC) {
1290 /* as we didn't request any async notifications,
1291 * some kind of xrun error will probably occured
1292 */
1293 /* better resynchronize all streams next interrupt : */
1294 mgr->dsp_time_last = PCXHR_DSP_TIME_INVALID;
1295 }
1296 mgr->src_it_dsp = reg;
1297 tasklet_schedule(&mgr->msg_taskq);
1298 }
1299 #ifdef CONFIG_SND_DEBUG_VERBOSE
1300 if (reg & PCXHR_FATAL_DSP_ERR)
1301 snd_printdd("FATAL DSP ERROR : %x\n", reg);
1302 #endif
1303 spin_unlock(&mgr->lock);
1304 return IRQ_HANDLED; /* this device caused the interrupt */
1305 }
Linux ARM platform port for MOXA ART SoC