git.oblomov.eu Git - linux-2.6/blob - 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 <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 }