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