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sscape.c
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linux-6.19.14/sound/isa/sscape.c
1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * Low-level ALSA driver for the ENSONIQ SoundScape 4 * Copyright (c) by Chris Rankin 5 * 6 * This driver was written in part using information obtained from 7 * the OSS/Free SoundScape driver, written by Hannu Savolainen. 8 */ 9 10#include <linux/init.h> 11#include <linux/err.h> 12#include <linux/io.h> 13#include <linux/isa.h> 14#include <linux/delay.h> 15#include <linux/firmware.h> 16#include <linux/pnp.h> 17#include <linux/spinlock.h> 18#include <linux/module.h> 19#include <asm/dma.h> 20#include <sound/core.h> 21#include <sound/wss.h> 22#include <sound/mpu401.h> 23#include <sound/initval.h> 24 25 26MODULE_AUTHOR("Chris Rankin"); 27MODULE_DESCRIPTION("ENSONIQ SoundScape driver"); 28MODULE_LICENSE("GPL"); 29MODULE_FIRMWARE("sndscape.co0"); 30MODULE_FIRMWARE("sndscape.co1"); 31MODULE_FIRMWARE("sndscape.co2"); 32MODULE_FIRMWARE("sndscape.co3"); 33MODULE_FIRMWARE("sndscape.co4"); 34MODULE_FIRMWARE("scope.cod"); 35 36static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; 37static char* id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; 38static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; 39static long wss_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; 40static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; 41static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; 42static int dma[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; 43static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; 44static bool joystick[SNDRV_CARDS]; 45 46module_param_array(index, int, NULL, 0444); 47MODULE_PARM_DESC(index, "Index number for SoundScape soundcard"); 48 49module_param_array(id, charp, NULL, 0444); 50MODULE_PARM_DESC(id, "Description for SoundScape card"); 51 52module_param_hw_array(port, long, ioport, NULL, 0444); 53MODULE_PARM_DESC(port, "Port # for SoundScape driver."); 54 55module_param_hw_array(wss_port, long, ioport, NULL, 0444); 56MODULE_PARM_DESC(wss_port, "WSS Port # for SoundScape driver."); 57 58module_param_hw_array(irq, int, irq, NULL, 0444); 59MODULE_PARM_DESC(irq, "IRQ # for SoundScape driver."); 60 61module_param_hw_array(mpu_irq, int, irq, NULL, 0444); 62MODULE_PARM_DESC(mpu_irq, "MPU401 IRQ # for SoundScape driver."); 63 64module_param_hw_array(dma, int, dma, NULL, 0444); 65MODULE_PARM_DESC(dma, "DMA # for SoundScape driver."); 66 67module_param_hw_array(dma2, int, dma, NULL, 0444); 68MODULE_PARM_DESC(dma2, "DMA2 # for SoundScape driver."); 69 70module_param_array(joystick, bool, NULL, 0444); 71MODULE_PARM_DESC(joystick, "Enable gameport."); 72 73#ifdef CONFIG_PNP 74static int isa_registered; 75static int pnp_registered; 76 77static const struct pnp_card_device_id sscape_pnpids[] = { 78 { .id = "ENS3081", .devs = { { "ENS0000" } } }, /* Soundscape PnP */ 79 { .id = "ENS4081", .devs = { { "ENS1011" } } }, /* VIVO90 */ 80 { .id = "" } /* end */ 81}; 82 83MODULE_DEVICE_TABLE(pnp_card, sscape_pnpids); 84#endif 85 86 87#define HOST_CTRL_IO(i) ((i) + 2) 88#define HOST_DATA_IO(i) ((i) + 3) 89#define ODIE_ADDR_IO(i) ((i) + 4) 90#define ODIE_DATA_IO(i) ((i) + 5) 91#define CODEC_IO(i) ((i) + 8) 92 93#define IC_ODIE 1 94#define IC_OPUS 2 95 96#define RX_READY 0x01 97#define TX_READY 0x02 98 99#define CMD_ACK 0x80 100#define CMD_SET_MIDI_VOL 0x84 101#define CMD_GET_MIDI_VOL 0x85 102#define CMD_XXX_MIDI_VOL 0x86 103#define CMD_SET_EXTMIDI 0x8a 104#define CMD_GET_EXTMIDI 0x8b 105#define CMD_SET_MT32 0x8c 106#define CMD_GET_MT32 0x8d 107 108enum GA_REG { 109 GA_INTSTAT_REG = 0, 110 GA_INTENA_REG, 111 GA_DMAA_REG, 112 GA_DMAB_REG, 113 GA_INTCFG_REG, 114 GA_DMACFG_REG, 115 GA_CDCFG_REG, 116 GA_SMCFGA_REG, 117 GA_SMCFGB_REG, 118 GA_HMCTL_REG 119}; 120 121#define DMA_8BIT 0x80 122 123 124enum card_type { 125 MEDIA_FX, /* Sequoia S-1000 */ 126 SSCAPE, /* Sequoia S-2000 */ 127 SSCAPE_PNP, 128 SSCAPE_VIVO, 129}; 130 131struct soundscape { 132 spinlock_t lock; 133 unsigned io_base; 134 int ic_type; 135 enum card_type type; 136 struct resource *io_res; 137 struct resource *wss_res; 138 struct snd_wss *chip; 139 140 unsigned char midi_vol; 141 struct device *dev; 142}; 143 144#define INVALID_IRQ ((unsigned)-1) 145 146 147static inline struct soundscape *get_card_soundscape(struct snd_card *c) 148{ 149 return (struct soundscape *) (c->private_data); 150} 151 152/* 153 * Allocates some kernel memory that we can use for DMA. 154 * I think this means that the memory has to map to 155 * contiguous pages of physical memory. 156 */ 157static struct snd_dma_buffer *get_dmabuf(struct soundscape *s, 158 struct snd_dma_buffer *buf, 159 unsigned long size) 160{ 161 if (buf) { 162 if (snd_dma_alloc_pages_fallback(SNDRV_DMA_TYPE_DEV, 163 s->chip->card->dev, 164 size, buf) < 0) { 165 dev_err(s->dev, 166 "sscape: Failed to allocate %lu bytes for DMA\n", 167 size); 168 return NULL; 169 } 170 } 171 172 return buf; 173} 174 175/* 176 * Release the DMA-able kernel memory ... 177 */ 178static void free_dmabuf(struct snd_dma_buffer *buf) 179{ 180 if (buf && buf->area) 181 snd_dma_free_pages(buf); 182} 183 184/* 185 * This function writes to the SoundScape's control registers, 186 * but doesn't do any locking. It's up to the caller to do that. 187 * This is why this function is "unsafe" ... 188 */ 189static inline void sscape_write_unsafe(unsigned io_base, enum GA_REG reg, 190 unsigned char val) 191{ 192 outb(reg, ODIE_ADDR_IO(io_base)); 193 outb(val, ODIE_DATA_IO(io_base)); 194} 195 196/* 197 * Write to the SoundScape's control registers, and do the 198 * necessary locking ... 199 */ 200static void sscape_write(struct soundscape *s, enum GA_REG reg, 201 unsigned char val) 202{ 203 guard(spinlock_irqsave)(&s->lock); 204 sscape_write_unsafe(s->io_base, reg, val); 205} 206 207/* 208 * Read from the SoundScape's control registers, but leave any 209 * locking to the caller. This is why the function is "unsafe" ... 210 */ 211static inline unsigned char sscape_read_unsafe(unsigned io_base, 212 enum GA_REG reg) 213{ 214 outb(reg, ODIE_ADDR_IO(io_base)); 215 return inb(ODIE_DATA_IO(io_base)); 216} 217 218/* 219 * Puts the SoundScape into "host" mode, as compared to "MIDI" mode 220 */ 221static inline void set_host_mode_unsafe(unsigned io_base) 222{ 223 outb(0x0, HOST_CTRL_IO(io_base)); 224} 225 226/* 227 * Puts the SoundScape into "MIDI" mode, as compared to "host" mode 228 */ 229static inline void set_midi_mode_unsafe(unsigned io_base) 230{ 231 outb(0x3, HOST_CTRL_IO(io_base)); 232} 233 234/* 235 * Read the SoundScape's host-mode control register, but leave 236 * any locking issues to the caller ... 237 */ 238static inline int host_read_unsafe(unsigned io_base) 239{ 240 int data = -1; 241 if ((inb(HOST_CTRL_IO(io_base)) & RX_READY) != 0) 242 data = inb(HOST_DATA_IO(io_base)); 243 244 return data; 245} 246 247/* 248 * Read the SoundScape's host-mode control register, performing 249 * a limited amount of busy-waiting if the register isn't ready. 250 * Also leaves all locking-issues to the caller ... 251 */ 252static int host_read_ctrl_unsafe(unsigned io_base, unsigned timeout) 253{ 254 int data; 255 256 while (((data = host_read_unsafe(io_base)) < 0) && (timeout != 0)) { 257 udelay(100); 258 --timeout; 259 } /* while */ 260 261 return data; 262} 263 264/* 265 * Write to the SoundScape's host-mode control registers, but 266 * leave any locking issues to the caller ... 267 */ 268static inline int host_write_unsafe(unsigned io_base, unsigned char data) 269{ 270 if ((inb(HOST_CTRL_IO(io_base)) & TX_READY) != 0) { 271 outb(data, HOST_DATA_IO(io_base)); 272 return 1; 273 } 274 275 return 0; 276} 277 278/* 279 * Write to the SoundScape's host-mode control registers, performing 280 * a limited amount of busy-waiting if the register isn't ready. 281 * Also leaves all locking-issues to the caller ... 282 */ 283static int host_write_ctrl_unsafe(unsigned io_base, unsigned char data, 284 unsigned timeout) 285{ 286 int err; 287 288 while (!(err = host_write_unsafe(io_base, data)) && (timeout != 0)) { 289 udelay(100); 290 --timeout; 291 } /* while */ 292 293 return err; 294} 295 296 297/* 298 * Check that the MIDI subsystem is operational. If it isn't, 299 * then we will hang the computer if we try to use it ... 300 * 301 * NOTE: This check is based upon observation, not documentation. 302 */ 303static inline int verify_mpu401(const struct snd_mpu401 *mpu) 304{ 305 return ((inb(MPU401C(mpu)) & 0xc0) == 0x80); 306} 307 308/* 309 * This is apparently the standard way to initialise an MPU-401 310 */ 311static inline void initialise_mpu401(const struct snd_mpu401 *mpu) 312{ 313 outb(0, MPU401D(mpu)); 314} 315 316/* 317 * Tell the SoundScape to activate the AD1845 chip (I think). 318 * The AD1845 detection fails if we *don't* do this, so I 319 * think that this is a good idea ... 320 */ 321static void activate_ad1845_unsafe(unsigned io_base) 322{ 323 unsigned char val = sscape_read_unsafe(io_base, GA_HMCTL_REG); 324 sscape_write_unsafe(io_base, GA_HMCTL_REG, (val & 0xcf) | 0x10); 325 sscape_write_unsafe(io_base, GA_CDCFG_REG, 0x80); 326} 327 328/* 329 * Tell the SoundScape to begin a DMA transfer using the given channel. 330 * All locking issues are left to the caller. 331 */ 332static void sscape_start_dma_unsafe(unsigned io_base, enum GA_REG reg) 333{ 334 sscape_write_unsafe(io_base, reg, 335 sscape_read_unsafe(io_base, reg) | 0x01); 336 sscape_write_unsafe(io_base, reg, 337 sscape_read_unsafe(io_base, reg) & 0xfe); 338} 339 340/* 341 * Wait for a DMA transfer to complete. This is a "limited busy-wait", 342 * and all locking issues are left to the caller. 343 */ 344static int sscape_wait_dma_unsafe(unsigned io_base, enum GA_REG reg, 345 unsigned timeout) 346{ 347 while (!(sscape_read_unsafe(io_base, reg) & 0x01) && (timeout != 0)) { 348 udelay(100); 349 --timeout; 350 } /* while */ 351 352 return sscape_read_unsafe(io_base, reg) & 0x01; 353} 354 355/* 356 * Wait for the On-Board Processor to return its start-up 357 * acknowledgement sequence. This wait is too long for 358 * us to perform "busy-waiting", and so we must sleep. 359 * This in turn means that we must not be holding any 360 * spinlocks when we call this function. 361 */ 362static int obp_startup_ack(struct soundscape *s, unsigned timeout) 363{ 364 unsigned long end_time = jiffies + msecs_to_jiffies(timeout); 365 366 do { 367 int x; 368 369 scoped_guard(spinlock_irqsave, &s->lock) { 370 x = host_read_unsafe(s->io_base); 371 } 372 if (x == 0xfe || x == 0xff) 373 return 1; 374 375 msleep(10); 376 } while (time_before(jiffies, end_time)); 377 378 return 0; 379} 380 381/* 382 * Wait for the host to return its start-up acknowledgement 383 * sequence. This wait is too long for us to perform 384 * "busy-waiting", and so we must sleep. This in turn means 385 * that we must not be holding any spinlocks when we call 386 * this function. 387 */ 388static int host_startup_ack(struct soundscape *s, unsigned timeout) 389{ 390 unsigned long end_time = jiffies + msecs_to_jiffies(timeout); 391 392 do { 393 int x; 394 395 scoped_guard(spinlock_irqsave, &s->lock) { 396 x = host_read_unsafe(s->io_base); 397 } 398 if (x == 0xfe) 399 return 1; 400 401 msleep(10); 402 } while (time_before(jiffies, end_time)); 403 404 return 0; 405} 406 407/* 408 * Upload a byte-stream into the SoundScape using DMA channel A. 409 */ 410static int upload_dma_data(struct soundscape *s, const unsigned char *data, 411 size_t size) 412{ 413 struct snd_dma_buffer dma; 414 int ret; 415 unsigned char val; 416 417 if (!get_dmabuf(s, &dma, PAGE_ALIGN(32 * 1024))) 418 return -ENOMEM; 419 420 scoped_guard(spinlock_irqsave, &s->lock) { 421 422 /* 423 * Reset the board ... 424 */ 425 val = sscape_read_unsafe(s->io_base, GA_HMCTL_REG); 426 sscape_write_unsafe(s->io_base, GA_HMCTL_REG, val & 0x3f); 427 428 /* 429 * Enable the DMA channels and configure them ... 430 */ 431 val = (s->chip->dma1 << 4) | DMA_8BIT; 432 sscape_write_unsafe(s->io_base, GA_DMAA_REG, val); 433 sscape_write_unsafe(s->io_base, GA_DMAB_REG, 0x20); 434 435 /* 436 * Take the board out of reset ... 437 */ 438 val = sscape_read_unsafe(s->io_base, GA_HMCTL_REG); 439 sscape_write_unsafe(s->io_base, GA_HMCTL_REG, val | 0x80); 440 441 /* 442 * Upload the firmware to the SoundScape 443 * board through the DMA channel ... 444 */ 445 while (size != 0) { 446 unsigned long len; 447 448 len = min(size, dma.bytes); 449 memcpy(dma.area, data, len); 450 data += len; 451 size -= len; 452 453 snd_dma_program(s->chip->dma1, dma.addr, len, DMA_MODE_WRITE); 454 sscape_start_dma_unsafe(s->io_base, GA_DMAA_REG); 455 if (!sscape_wait_dma_unsafe(s->io_base, GA_DMAA_REG, 5000)) { 456 dev_err(s->dev, "sscape: DMA upload has timed out\n"); 457 ret = -EAGAIN; 458 goto _release_dma; 459 } 460 } /* while */ 461 462 set_host_mode_unsafe(s->io_base); 463 outb(0x0, s->io_base); 464 465 /* 466 * Boot the board ... (I think) 467 */ 468 val = sscape_read_unsafe(s->io_base, GA_HMCTL_REG); 469 sscape_write_unsafe(s->io_base, GA_HMCTL_REG, val | 0x40); 470 } 471 472 /* 473 * If all has gone well, then the board should acknowledge 474 * the new upload and tell us that it has rebooted OK. We 475 * give it 5 seconds (max) ... 476 */ 477 ret = 0; 478 if (!obp_startup_ack(s, 5000)) { 479 dev_err(s->dev, 480 "sscape: No response from on-board processor after upload\n"); 481 ret = -EAGAIN; 482 } else if (!host_startup_ack(s, 5000)) { 483 dev_err(s->dev, "sscape: SoundScape failed to initialise\n"); 484 ret = -EAGAIN; 485 } 486 487_release_dma: 488 /* 489 * NOTE!!! We are NOT holding any spinlocks at this point !!! 490 */ 491 sscape_write(s, GA_DMAA_REG, (s->ic_type == IC_OPUS ? 0x40 : 0x70)); 492 free_dmabuf(&dma); 493 494 return ret; 495} 496 497/* 498 * Upload the bootblock(?) into the SoundScape. The only 499 * purpose of this block of code seems to be to tell 500 * us which version of the microcode we should be using. 501 */ 502static int sscape_upload_bootblock(struct snd_card *card) 503{ 504 struct soundscape *sscape = get_card_soundscape(card); 505 const struct firmware *init_fw = NULL; 506 int data = 0; 507 int ret; 508 509 ret = request_firmware(&init_fw, "scope.cod", card->dev); 510 if (ret < 0) { 511 dev_err(card->dev, "sscape: Error loading scope.cod"); 512 return ret; 513 } 514 ret = upload_dma_data(sscape, init_fw->data, init_fw->size); 515 516 release_firmware(init_fw); 517 518 guard(spinlock_irqsave)(&sscape->lock); 519 if (ret == 0) 520 data = host_read_ctrl_unsafe(sscape->io_base, 100); 521 522 if (data & 0x10) 523 sscape_write_unsafe(sscape->io_base, GA_SMCFGA_REG, 0x2f); 524 525 data &= 0xf; 526 if (ret == 0 && data > 7) { 527 dev_err(card->dev, 528 "sscape: timeout reading firmware version\n"); 529 ret = -EAGAIN; 530 } 531 532 return (ret == 0) ? data : ret; 533} 534 535/* 536 * Upload the microcode into the SoundScape. 537 */ 538static int sscape_upload_microcode(struct snd_card *card, int version) 539{ 540 struct soundscape *sscape = get_card_soundscape(card); 541 const struct firmware *init_fw = NULL; 542 char name[14]; 543 int err; 544 545 scnprintf(name, sizeof(name), "sndscape.co%d", version); 546 547 err = request_firmware(&init_fw, name, card->dev); 548 if (err < 0) { 549 dev_err(card->dev, "sscape: Error loading sndscape.co%d", 550 version); 551 return err; 552 } 553 err = upload_dma_data(sscape, init_fw->data, init_fw->size); 554 if (err == 0) 555 dev_info(card->dev, "sscape: MIDI firmware loaded %zu KBs\n", 556 init_fw->size >> 10); 557 558 release_firmware(init_fw); 559 560 return err; 561} 562 563/* 564 * Mixer control for the SoundScape's MIDI device. 565 */ 566static int sscape_midi_info(struct snd_kcontrol *ctl, 567 struct snd_ctl_elem_info *uinfo) 568{ 569 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 570 uinfo->count = 1; 571 uinfo->value.integer.min = 0; 572 uinfo->value.integer.max = 127; 573 return 0; 574} 575 576static int sscape_midi_get(struct snd_kcontrol *kctl, 577 struct snd_ctl_elem_value *uctl) 578{ 579 struct snd_wss *chip = snd_kcontrol_chip(kctl); 580 struct snd_card *card = chip->card; 581 register struct soundscape *s = get_card_soundscape(card); 582 583 guard(spinlock_irqsave)(&s->lock); 584 uctl->value.integer.value[0] = s->midi_vol; 585 return 0; 586} 587 588static int sscape_midi_put(struct snd_kcontrol *kctl, 589 struct snd_ctl_elem_value *uctl) 590{ 591 struct snd_wss *chip = snd_kcontrol_chip(kctl); 592 struct snd_card *card = chip->card; 593 struct soundscape *s = get_card_soundscape(card); 594 int change; 595 unsigned char new_val; 596 597 guard(spinlock_irqsave)(&s->lock); 598 599 new_val = uctl->value.integer.value[0] & 127; 600 /* 601 * We need to put the board into HOST mode before we 602 * can send any volume-changing HOST commands ... 603 */ 604 set_host_mode_unsafe(s->io_base); 605 606 /* 607 * To successfully change the MIDI volume setting, you seem to 608 * have to write a volume command, write the new volume value, 609 * and then perform another volume-related command. Perhaps the 610 * first command is an "open" and the second command is a "close"? 611 */ 612 if (s->midi_vol == new_val) { 613 change = 0; 614 goto __skip_change; 615 } 616 change = host_write_ctrl_unsafe(s->io_base, CMD_SET_MIDI_VOL, 100) 617 && host_write_ctrl_unsafe(s->io_base, new_val, 100) 618 && host_write_ctrl_unsafe(s->io_base, CMD_XXX_MIDI_VOL, 100) 619 && host_write_ctrl_unsafe(s->io_base, new_val, 100); 620 s->midi_vol = new_val; 621__skip_change: 622 623 /* 624 * Take the board out of HOST mode and back into MIDI mode ... 625 */ 626 set_midi_mode_unsafe(s->io_base); 627 628 return change; 629} 630 631static const struct snd_kcontrol_new midi_mixer_ctl = { 632 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 633 .name = "MIDI", 634 .info = sscape_midi_info, 635 .get = sscape_midi_get, 636 .put = sscape_midi_put 637}; 638 639/* 640 * The SoundScape can use two IRQs from a possible set of four. 641 * These IRQs are encoded as bit patterns so that they can be 642 * written to the control registers. 643 */ 644static unsigned get_irq_config(int sscape_type, int irq) 645{ 646 static const int valid_irq[] = { 9, 5, 7, 10 }; 647 static const int old_irq[] = { 9, 7, 5, 15 }; 648 unsigned cfg; 649 650 if (sscape_type == MEDIA_FX) { 651 for (cfg = 0; cfg < ARRAY_SIZE(old_irq); ++cfg) 652 if (irq == old_irq[cfg]) 653 return cfg; 654 } else { 655 for (cfg = 0; cfg < ARRAY_SIZE(valid_irq); ++cfg) 656 if (irq == valid_irq[cfg]) 657 return cfg; 658 } 659 660 return INVALID_IRQ; 661} 662 663/* 664 * Perform certain arcane port-checks to see whether there 665 * is a SoundScape board lurking behind the given ports. 666 */ 667static int detect_sscape(struct soundscape *s, long wss_io) 668{ 669 unsigned long flags; 670 unsigned d; 671 int retval = 0; 672 673 spin_lock_irqsave(&s->lock, flags); 674 675 /* 676 * The following code is lifted from the original OSS driver, 677 * and as I don't have a datasheet I cannot really comment 678 * on what it is doing... 679 */ 680 if ((inb(HOST_CTRL_IO(s->io_base)) & 0x78) != 0) 681 goto _done; 682 683 d = inb(ODIE_ADDR_IO(s->io_base)) & 0xf0; 684 if ((d & 0x80) != 0) 685 goto _done; 686 687 if (d == 0) 688 s->ic_type = IC_ODIE; 689 else if ((d & 0x60) != 0) 690 s->ic_type = IC_OPUS; 691 else 692 goto _done; 693 694 outb(0xfa, ODIE_ADDR_IO(s->io_base)); 695 if ((inb(ODIE_ADDR_IO(s->io_base)) & 0x9f) != 0x0a) 696 goto _done; 697 698 outb(0xfe, ODIE_ADDR_IO(s->io_base)); 699 if ((inb(ODIE_ADDR_IO(s->io_base)) & 0x9f) != 0x0e) 700 goto _done; 701 702 outb(0xfe, ODIE_ADDR_IO(s->io_base)); 703 d = inb(ODIE_DATA_IO(s->io_base)); 704 if (s->type != SSCAPE_VIVO && (d & 0x9f) != 0x0e) 705 goto _done; 706 707 if (s->ic_type == IC_OPUS) 708 activate_ad1845_unsafe(s->io_base); 709 710 if (s->type == SSCAPE_VIVO) 711 wss_io += 4; 712 713 d = sscape_read_unsafe(s->io_base, GA_HMCTL_REG); 714 sscape_write_unsafe(s->io_base, GA_HMCTL_REG, d | 0xc0); 715 716 /* wait for WSS codec */ 717 for (d = 0; d < 500; d++) { 718 if ((inb(wss_io) & 0x80) == 0) 719 break; 720 spin_unlock_irqrestore(&s->lock, flags); 721 msleep(1); 722 spin_lock_irqsave(&s->lock, flags); 723 } 724 725 if ((inb(wss_io) & 0x80) != 0) 726 goto _done; 727 728 if (inb(wss_io + 2) == 0xff) 729 goto _done; 730 731 d = sscape_read_unsafe(s->io_base, GA_HMCTL_REG) & 0x3f; 732 sscape_write_unsafe(s->io_base, GA_HMCTL_REG, d); 733 734 if ((inb(wss_io) & 0x80) != 0) 735 s->type = MEDIA_FX; 736 737 d = sscape_read_unsafe(s->io_base, GA_HMCTL_REG); 738 sscape_write_unsafe(s->io_base, GA_HMCTL_REG, d | 0xc0); 739 /* wait for WSS codec */ 740 for (d = 0; d < 500; d++) { 741 if ((inb(wss_io) & 0x80) == 0) 742 break; 743 spin_unlock_irqrestore(&s->lock, flags); 744 msleep(1); 745 spin_lock_irqsave(&s->lock, flags); 746 } 747 748 /* 749 * SoundScape successfully detected! 750 */ 751 retval = 1; 752 753_done: 754 spin_unlock_irqrestore(&s->lock, flags); 755 return retval; 756} 757 758/* 759 * ALSA callback function, called when attempting to open the MIDI device. 760 * Check that the MIDI firmware has been loaded, because we don't want 761 * to crash the machine. Also check that someone isn't using the hardware 762 * IOCTL device. 763 */ 764static int mpu401_open(struct snd_mpu401 *mpu) 765{ 766 if (!verify_mpu401(mpu)) { 767 dev_err(mpu->rmidi->card->dev, 768 "sscape: MIDI disabled, please load firmware\n"); 769 return -ENODEV; 770 } 771 772 return 0; 773} 774 775/* 776 * Initialise an MPU-401 subdevice for MIDI support on the SoundScape. 777 */ 778static int create_mpu401(struct snd_card *card, int devnum, 779 unsigned long port, int irq) 780{ 781 struct soundscape *sscape = get_card_soundscape(card); 782 struct snd_rawmidi *rawmidi; 783 int err; 784 785 err = snd_mpu401_uart_new(card, devnum, MPU401_HW_MPU401, port, 786 MPU401_INFO_INTEGRATED, irq, &rawmidi); 787 if (err == 0) { 788 struct snd_mpu401 *mpu = rawmidi->private_data; 789 mpu->open_input = mpu401_open; 790 mpu->open_output = mpu401_open; 791 mpu->private_data = sscape; 792 793 initialise_mpu401(mpu); 794 } 795 796 return err; 797} 798 799 800/* 801 * Create an AD1845 PCM subdevice on the SoundScape. The AD1845 802 * is very much like a CS4231, with a few extra bits. We will 803 * try to support at least some of the extra bits by overriding 804 * some of the CS4231 callback. 805 */ 806static int create_ad1845(struct snd_card *card, unsigned port, 807 int irq, int dma1, int dma2) 808{ 809 register struct soundscape *sscape = get_card_soundscape(card); 810 struct snd_wss *chip; 811 int err; 812 int codec_type = WSS_HW_DETECT; 813 814 switch (sscape->type) { 815 case MEDIA_FX: 816 case SSCAPE: 817 /* 818 * There are some freak examples of early Soundscape cards 819 * with CS4231 instead of AD1848/CS4248. Unfortunately, the 820 * CS4231 works only in CS4248 compatibility mode on 821 * these cards so force it. 822 */ 823 if (sscape->ic_type != IC_OPUS) 824 codec_type = WSS_HW_AD1848; 825 break; 826 827 case SSCAPE_VIVO: 828 port += 4; 829 break; 830 default: 831 break; 832 } 833 834 err = snd_wss_create(card, port, -1, irq, dma1, dma2, 835 codec_type, WSS_HWSHARE_DMA1, &chip); 836 if (!err) { 837 if (sscape->type != SSCAPE_VIVO) { 838 /* 839 * The input clock frequency on the SoundScape must 840 * be 14.31818 MHz, because we must set this register 841 * to get the playback to sound correct ... 842 */ 843 snd_wss_mce_up(chip); 844 scoped_guard(spinlock_irqsave, &chip->reg_lock) { 845 snd_wss_out(chip, AD1845_CLOCK, 0x20); 846 } 847 snd_wss_mce_down(chip); 848 849 } 850 851 err = snd_wss_pcm(chip, 0); 852 if (err < 0) { 853 dev_err(card->dev, 854 "sscape: No PCM device for AD1845 chip\n"); 855 goto _error; 856 } 857 858 err = snd_wss_mixer(chip); 859 if (err < 0) { 860 dev_err(card->dev, 861 "sscape: No mixer device for AD1845 chip\n"); 862 goto _error; 863 } 864 if (chip->hardware != WSS_HW_AD1848) { 865 err = snd_wss_timer(chip, 0); 866 if (err < 0) { 867 dev_err(card->dev, 868 "sscape: No timer device for AD1845 chip\n"); 869 goto _error; 870 } 871 } 872 873 if (sscape->type != SSCAPE_VIVO) { 874 err = snd_ctl_add(card, 875 snd_ctl_new1(&midi_mixer_ctl, chip)); 876 if (err < 0) { 877 dev_err(card->dev, 878 "sscape: Could not create MIDI mixer control\n"); 879 goto _error; 880 } 881 } 882 883 sscape->chip = chip; 884 } 885 886_error: 887 return err; 888} 889 890 891/* 892 * Create an ALSA soundcard entry for the SoundScape, using 893 * the given list of port, IRQ and DMA resources. 894 */ 895static int create_sscape(int dev, struct snd_card *card) 896{ 897 struct soundscape *sscape = get_card_soundscape(card); 898 unsigned dma_cfg; 899 unsigned irq_cfg; 900 unsigned mpu_irq_cfg; 901 struct resource *io_res; 902 struct resource *wss_res; 903 int err; 904 int val; 905 const char *name; 906 907 /* 908 * Grab IO ports that we will need to probe so that we 909 * can detect and control this hardware ... 910 */ 911 io_res = devm_request_region(card->dev, port[dev], 8, "SoundScape"); 912 if (!io_res) { 913 dev_err(card->dev, 914 "sscape: can't grab port 0x%lx\n", port[dev]); 915 return -EBUSY; 916 } 917 wss_res = NULL; 918 if (sscape->type == SSCAPE_VIVO) { 919 wss_res = devm_request_region(card->dev, wss_port[dev], 4, 920 "SoundScape"); 921 if (!wss_res) { 922 dev_err(card->dev, "sscape: can't grab port 0x%lx\n", 923 wss_port[dev]); 924 return -EBUSY; 925 } 926 } 927 928 /* 929 * Grab one DMA channel ... 930 */ 931 err = snd_devm_request_dma(card->dev, dma[dev], "SoundScape"); 932 if (err < 0) { 933 dev_err(card->dev, "sscape: can't grab DMA %d\n", dma[dev]); 934 return err; 935 } 936 937 spin_lock_init(&sscape->lock); 938 sscape->io_res = io_res; 939 sscape->wss_res = wss_res; 940 sscape->io_base = port[dev]; 941 942 if (!detect_sscape(sscape, wss_port[dev])) { 943 dev_err(card->dev, "sscape: hardware not detected at 0x%x\n", 944 sscape->io_base); 945 return -ENODEV; 946 } 947 948 switch (sscape->type) { 949 case MEDIA_FX: 950 name = "MediaFX/SoundFX"; 951 break; 952 case SSCAPE: 953 name = "Soundscape"; 954 break; 955 case SSCAPE_PNP: 956 name = "Soundscape PnP"; 957 break; 958 case SSCAPE_VIVO: 959 name = "Soundscape VIVO"; 960 break; 961 default: 962 name = "unknown Soundscape"; 963 break; 964 } 965 966 dev_info(card->dev, "sscape: %s card detected at 0x%x, using IRQ %d, DMA %d\n", 967 name, sscape->io_base, irq[dev], dma[dev]); 968 969 /* 970 * Check that the user didn't pass us garbage data ... 971 */ 972 irq_cfg = get_irq_config(sscape->type, irq[dev]); 973 if (irq_cfg == INVALID_IRQ) { 974 dev_err(card->dev, "sscape: Invalid IRQ %d\n", irq[dev]); 975 return -ENXIO; 976 } 977 978 mpu_irq_cfg = get_irq_config(sscape->type, mpu_irq[dev]); 979 if (mpu_irq_cfg == INVALID_IRQ) { 980 dev_err(card->dev, "sscape: Invalid IRQ %d\n", mpu_irq[dev]); 981 return -ENXIO; 982 } 983 984 /* 985 * Tell the on-board devices where their resources are (I think - 986 * I can't be sure without a datasheet ... So many magic values!) 987 */ 988 scoped_guard(spinlock_irqsave, &sscape->lock) { 989 990 sscape_write_unsafe(sscape->io_base, GA_SMCFGA_REG, 0x2e); 991 sscape_write_unsafe(sscape->io_base, GA_SMCFGB_REG, 0x00); 992 993 /* 994 * Enable and configure the DMA channels ... 995 */ 996 sscape_write_unsafe(sscape->io_base, GA_DMACFG_REG, 0x50); 997 dma_cfg = (sscape->ic_type == IC_OPUS ? 0x40 : 0x70); 998 sscape_write_unsafe(sscape->io_base, GA_DMAA_REG, dma_cfg); 999 sscape_write_unsafe(sscape->io_base, GA_DMAB_REG, 0x20); 1000 1001 mpu_irq_cfg |= mpu_irq_cfg << 2; 1002 val = sscape_read_unsafe(sscape->io_base, GA_HMCTL_REG) & 0xF7; 1003 if (joystick[dev]) 1004 val |= 8; 1005 sscape_write_unsafe(sscape->io_base, GA_HMCTL_REG, val | 0x10); 1006 sscape_write_unsafe(sscape->io_base, GA_INTCFG_REG, 0xf0 | mpu_irq_cfg); 1007 sscape_write_unsafe(sscape->io_base, 1008 GA_CDCFG_REG, 0x09 | DMA_8BIT 1009 | (dma[dev] << 4) | (irq_cfg << 1)); 1010 /* 1011 * Enable the master IRQ ... 1012 */ 1013 sscape_write_unsafe(sscape->io_base, GA_INTENA_REG, 0x80); 1014 1015 } 1016 1017 /* 1018 * We have now enabled the codec chip, and so we should 1019 * detect the AD1845 device ... 1020 */ 1021 err = create_ad1845(card, wss_port[dev], irq[dev], 1022 dma[dev], dma2[dev]); 1023 if (err < 0) { 1024 dev_err(card->dev, 1025 "sscape: No AD1845 device at 0x%lx, IRQ %d\n", 1026 wss_port[dev], irq[dev]); 1027 return err; 1028 } 1029 strscpy(card->driver, "SoundScape"); 1030 strscpy(card->shortname, name); 1031 snprintf(card->longname, sizeof(card->longname), 1032 "%s at 0x%lx, IRQ %d, DMA1 %d, DMA2 %d\n", 1033 name, sscape->chip->port, sscape->chip->irq, 1034 sscape->chip->dma1, sscape->chip->dma2); 1035 1036#define MIDI_DEVNUM 0 1037 if (sscape->type != SSCAPE_VIVO) { 1038 err = sscape_upload_bootblock(card); 1039 if (err >= 0) 1040 err = sscape_upload_microcode(card, err); 1041 1042 if (err == 0) { 1043 err = create_mpu401(card, MIDI_DEVNUM, port[dev], 1044 mpu_irq[dev]); 1045 if (err < 0) { 1046 dev_err(card->dev, 1047 "sscape: Failed to create MPU-401 device at 0x%lx\n", 1048 port[dev]); 1049 return err; 1050 } 1051 1052 /* 1053 * Initialize mixer 1054 */ 1055 guard(spinlock_irqsave)(&sscape->lock); 1056 sscape->midi_vol = 0; 1057 host_write_ctrl_unsafe(sscape->io_base, 1058 CMD_SET_MIDI_VOL, 100); 1059 host_write_ctrl_unsafe(sscape->io_base, 1060 sscape->midi_vol, 100); 1061 host_write_ctrl_unsafe(sscape->io_base, 1062 CMD_XXX_MIDI_VOL, 100); 1063 host_write_ctrl_unsafe(sscape->io_base, 1064 sscape->midi_vol, 100); 1065 host_write_ctrl_unsafe(sscape->io_base, 1066 CMD_SET_EXTMIDI, 100); 1067 host_write_ctrl_unsafe(sscape->io_base, 1068 0, 100); 1069 host_write_ctrl_unsafe(sscape->io_base, CMD_ACK, 100); 1070 1071 set_midi_mode_unsafe(sscape->io_base); 1072 } 1073 } 1074 1075 return 0; 1076} 1077 1078 1079static int snd_sscape_match(struct device *pdev, unsigned int i) 1080{ 1081 /* 1082 * Make sure we were given ALL of the other parameters. 1083 */ 1084 if (port[i] == SNDRV_AUTO_PORT) 1085 return 0; 1086 1087 if (irq[i] == SNDRV_AUTO_IRQ || 1088 mpu_irq[i] == SNDRV_AUTO_IRQ || 1089 dma[i] == SNDRV_AUTO_DMA) { 1090 dev_info(pdev, 1091 "sscape: insufficient parameters, need IO, IRQ, MPU-IRQ and DMA\n"); 1092 return 0; 1093 } 1094 1095 return 1; 1096} 1097 1098static int snd_sscape_probe(struct device *pdev, unsigned int dev) 1099{ 1100 struct snd_card *card; 1101 struct soundscape *sscape; 1102 int ret; 1103 1104 ret = snd_devm_card_new(pdev, index[dev], id[dev], THIS_MODULE, 1105 sizeof(struct soundscape), &card); 1106 if (ret < 0) 1107 return ret; 1108 1109 sscape = get_card_soundscape(card); 1110 sscape->dev = pdev; 1111 sscape->type = SSCAPE; 1112 1113 dma[dev] &= 0x03; 1114 1115 ret = create_sscape(dev, card); 1116 if (ret < 0) 1117 return ret; 1118 1119 ret = snd_card_register(card); 1120 if (ret < 0) { 1121 dev_err(pdev, "sscape: Failed to register sound card\n"); 1122 return ret; 1123 } 1124 dev_set_drvdata(pdev, card); 1125 return 0; 1126} 1127 1128#define DEV_NAME "sscape" 1129 1130static struct isa_driver snd_sscape_driver = { 1131 .match = snd_sscape_match, 1132 .probe = snd_sscape_probe, 1133 /* FIXME: suspend/resume */ 1134 .driver = { 1135 .name = DEV_NAME 1136 }, 1137}; 1138 1139#ifdef CONFIG_PNP 1140static inline int get_next_autoindex(int i) 1141{ 1142 while (i < SNDRV_CARDS && port[i] != SNDRV_AUTO_PORT) 1143 ++i; 1144 return i; 1145} 1146 1147 1148static int sscape_pnp_detect(struct pnp_card_link *pcard, 1149 const struct pnp_card_device_id *pid) 1150{ 1151 static int idx = 0; 1152 struct pnp_dev *dev; 1153 struct snd_card *card; 1154 struct soundscape *sscape; 1155 int ret; 1156 1157 /* 1158 * Allow this function to fail *quietly* if all the ISA PnP 1159 * devices were configured using module parameters instead. 1160 */ 1161 idx = get_next_autoindex(idx); 1162 if (idx >= SNDRV_CARDS) 1163 return -ENOSPC; 1164 1165 /* 1166 * Check that we still have room for another sound card ... 1167 */ 1168 dev = pnp_request_card_device(pcard, pid->devs[0].id, NULL); 1169 if (!dev) 1170 return -ENODEV; 1171 1172 if (!pnp_is_active(dev)) { 1173 if (pnp_activate_dev(dev) < 0) { 1174 dev_info(&dev->dev, "sscape: device is inactive\n"); 1175 return -EBUSY; 1176 } 1177 } 1178 1179 /* 1180 * Create a new ALSA sound card entry, in anticipation 1181 * of detecting our hardware ... 1182 */ 1183 ret = snd_devm_card_new(&pcard->card->dev, 1184 index[idx], id[idx], THIS_MODULE, 1185 sizeof(struct soundscape), &card); 1186 if (ret < 0) 1187 return ret; 1188 1189 sscape = get_card_soundscape(card); 1190 sscape->dev = card->dev; 1191 1192 /* 1193 * Identify card model ... 1194 */ 1195 if (!strncmp("ENS4081", pid->id, 7)) 1196 sscape->type = SSCAPE_VIVO; 1197 else 1198 sscape->type = SSCAPE_PNP; 1199 1200 /* 1201 * Read the correct parameters off the ISA PnP bus ... 1202 */ 1203 port[idx] = pnp_port_start(dev, 0); 1204 irq[idx] = pnp_irq(dev, 0); 1205 mpu_irq[idx] = pnp_irq(dev, 1); 1206 dma[idx] = pnp_dma(dev, 0) & 0x03; 1207 if (sscape->type == SSCAPE_PNP) { 1208 dma2[idx] = dma[idx]; 1209 wss_port[idx] = CODEC_IO(port[idx]); 1210 } else { 1211 wss_port[idx] = pnp_port_start(dev, 1); 1212 dma2[idx] = pnp_dma(dev, 1); 1213 } 1214 1215 ret = create_sscape(idx, card); 1216 if (ret < 0) 1217 return ret; 1218 1219 ret = snd_card_register(card); 1220 if (ret < 0) { 1221 dev_err(card->dev, "sscape: Failed to register sound card\n"); 1222 return ret; 1223 } 1224 1225 pnp_set_card_drvdata(pcard, card); 1226 ++idx; 1227 return 0; 1228} 1229 1230static struct pnp_card_driver sscape_pnpc_driver = { 1231 .flags = PNP_DRIVER_RES_DO_NOT_CHANGE, 1232 .name = "sscape", 1233 .id_table = sscape_pnpids, 1234 .probe = sscape_pnp_detect, 1235}; 1236 1237#endif /* CONFIG_PNP */ 1238 1239static int __init sscape_init(void) 1240{ 1241 int err; 1242 1243 err = isa_register_driver(&snd_sscape_driver, SNDRV_CARDS); 1244#ifdef CONFIG_PNP 1245 if (!err) 1246 isa_registered = 1; 1247 1248 err = pnp_register_card_driver(&sscape_pnpc_driver); 1249 if (!err) 1250 pnp_registered = 1; 1251 1252 if (isa_registered) 1253 err = 0; 1254#endif 1255 return err; 1256} 1257 1258static void __exit sscape_exit(void) 1259{ 1260#ifdef CONFIG_PNP 1261 if (pnp_registered) 1262 pnp_unregister_card_driver(&sscape_pnpc_driver); 1263 if (isa_registered) 1264#endif 1265 isa_unregister_driver(&snd_sscape_driver); 1266} 1267 1268module_init(sscape_init); 1269module_exit(sscape_exit);
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