Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Support for VIA 82Cxxx Audio Codecs |
| 3 | * Copyright 1999,2000 Jeff Garzik |
| 4 | * |
| 5 | * Updated to support the VIA 8233/8235 audio subsystem |
| 6 | * Alan Cox <alan@redhat.com> (C) Copyright 2002, 2003 Red Hat Inc |
| 7 | * |
| 8 | * Distributed under the GNU GENERAL PUBLIC LICENSE (GPL) Version 2. |
| 9 | * See the "COPYING" file distributed with this software for more info. |
| 10 | * NO WARRANTY |
| 11 | * |
| 12 | * For a list of known bugs (errata) and documentation, |
| 13 | * see via-audio.pdf in Documentation/DocBook. |
| 14 | * If this documentation does not exist, run "make pdfdocs". |
| 15 | */ |
| 16 | |
| 17 | |
| 18 | #define VIA_VERSION "1.9.1-ac4-2.5" |
| 19 | |
| 20 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | #include <linux/module.h> |
| 22 | #include <linux/kernel.h> |
| 23 | #include <linux/fs.h> |
| 24 | #include <linux/mm.h> |
| 25 | #include <linux/pci.h> |
Randy Dunlap | b3c681e | 2006-06-27 02:53:53 -0700 | [diff] [blame] | 26 | #include <linux/poison.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #include <linux/init.h> |
| 28 | #include <linux/interrupt.h> |
| 29 | #include <linux/proc_fs.h> |
| 30 | #include <linux/spinlock.h> |
| 31 | #include <linux/sound.h> |
| 32 | #include <linux/poll.h> |
| 33 | #include <linux/soundcard.h> |
| 34 | #include <linux/ac97_codec.h> |
| 35 | #include <linux/smp_lock.h> |
| 36 | #include <linux/ioport.h> |
| 37 | #include <linux/delay.h> |
Tobias Klauser | 3e90928 | 2005-05-29 01:17:29 +0200 | [diff] [blame] | 38 | #include <linux/dma-mapping.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | #include <asm/io.h> |
| 40 | #include <asm/uaccess.h> |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 41 | #include <linux/mutex.h> |
| 42 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | #include "sound_config.h" |
| 44 | #include "dev_table.h" |
| 45 | #include "mpu401.h" |
| 46 | |
| 47 | |
| 48 | #undef VIA_DEBUG /* define to enable debugging output and checks */ |
| 49 | #ifdef VIA_DEBUG |
| 50 | /* note: prints function name for you */ |
| 51 | #define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , ## args) |
| 52 | #else |
| 53 | #define DPRINTK(fmt, args...) |
| 54 | #endif |
| 55 | |
| 56 | #undef VIA_NDEBUG /* define to disable lightweight runtime checks */ |
| 57 | #ifdef VIA_NDEBUG |
| 58 | #define assert(expr) |
| 59 | #else |
| 60 | #define assert(expr) \ |
| 61 | if(!(expr)) { \ |
| 62 | printk( "Assertion failed! %s,%s,%s,line=%d\n", \ |
| 63 | #expr,__FILE__,__FUNCTION__,__LINE__); \ |
| 64 | } |
| 65 | #endif |
| 66 | |
| 67 | #define VIA_SUPPORT_MMAP 1 /* buggy, for now... */ |
| 68 | |
| 69 | #define MAX_CARDS 1 |
| 70 | |
| 71 | #define VIA_CARD_NAME "VIA 82Cxxx Audio driver " VIA_VERSION |
| 72 | #define VIA_MODULE_NAME "via82cxxx" |
| 73 | #define PFX VIA_MODULE_NAME ": " |
| 74 | |
| 75 | #define VIA_COUNTER_LIMIT 100000 |
| 76 | |
| 77 | /* size of DMA buffers */ |
| 78 | #define VIA_MAX_BUFFER_DMA_PAGES 32 |
| 79 | |
| 80 | /* buffering default values in ms */ |
| 81 | #define VIA_DEFAULT_FRAG_TIME 20 |
| 82 | #define VIA_DEFAULT_BUFFER_TIME 500 |
| 83 | |
| 84 | /* the hardware has a 256 fragment limit */ |
| 85 | #define VIA_MIN_FRAG_NUMBER 2 |
| 86 | #define VIA_MAX_FRAG_NUMBER 128 |
| 87 | |
| 88 | #define VIA_MAX_FRAG_SIZE PAGE_SIZE |
| 89 | #define VIA_MIN_FRAG_SIZE (VIA_MAX_BUFFER_DMA_PAGES * PAGE_SIZE / VIA_MAX_FRAG_NUMBER) |
| 90 | |
| 91 | |
| 92 | /* 82C686 function 5 (audio codec) PCI configuration registers */ |
| 93 | #define VIA_ACLINK_STATUS 0x40 |
| 94 | #define VIA_ACLINK_CTRL 0x41 |
| 95 | #define VIA_FUNC_ENABLE 0x42 |
| 96 | #define VIA_PNP_CONTROL 0x43 |
| 97 | #define VIA_FM_NMI_CTRL 0x48 |
| 98 | |
| 99 | /* |
| 100 | * controller base 0 (scatter-gather) registers |
| 101 | * |
| 102 | * NOTE: Via datasheet lists first channel as "read" |
| 103 | * channel and second channel as "write" channel. |
| 104 | * I changed the naming of the constants to be more |
| 105 | * clear than I felt the datasheet to be. |
| 106 | */ |
| 107 | |
| 108 | #define VIA_BASE0_PCM_OUT_CHAN 0x00 /* output PCM to user */ |
| 109 | #define VIA_BASE0_PCM_OUT_CHAN_STATUS 0x00 |
| 110 | #define VIA_BASE0_PCM_OUT_CHAN_CTRL 0x01 |
| 111 | #define VIA_BASE0_PCM_OUT_CHAN_TYPE 0x02 |
| 112 | |
| 113 | #define VIA_BASE0_PCM_IN_CHAN 0x10 /* input PCM from user */ |
| 114 | #define VIA_BASE0_PCM_IN_CHAN_STATUS 0x10 |
| 115 | #define VIA_BASE0_PCM_IN_CHAN_CTRL 0x11 |
| 116 | #define VIA_BASE0_PCM_IN_CHAN_TYPE 0x12 |
| 117 | |
| 118 | /* offsets from base */ |
| 119 | #define VIA_PCM_STATUS 0x00 |
| 120 | #define VIA_PCM_CONTROL 0x01 |
| 121 | #define VIA_PCM_TYPE 0x02 |
| 122 | #define VIA_PCM_LEFTVOL 0x02 |
| 123 | #define VIA_PCM_RIGHTVOL 0x03 |
| 124 | #define VIA_PCM_TABLE_ADDR 0x04 |
| 125 | #define VIA_PCM_STOPRATE 0x08 /* 8233+ */ |
| 126 | #define VIA_PCM_BLOCK_COUNT 0x0C |
| 127 | |
| 128 | /* XXX unused DMA channel for FM PCM data */ |
| 129 | #define VIA_BASE0_FM_OUT_CHAN 0x20 |
| 130 | #define VIA_BASE0_FM_OUT_CHAN_STATUS 0x20 |
| 131 | #define VIA_BASE0_FM_OUT_CHAN_CTRL 0x21 |
| 132 | #define VIA_BASE0_FM_OUT_CHAN_TYPE 0x22 |
| 133 | |
| 134 | /* Six channel audio output on 8233 */ |
| 135 | #define VIA_BASE0_MULTI_OUT_CHAN 0x40 |
| 136 | #define VIA_BASE0_MULTI_OUT_CHAN_STATUS 0x40 |
| 137 | #define VIA_BASE0_MULTI_OUT_CHAN_CTRL 0x41 |
| 138 | #define VIA_BASE0_MULTI_OUT_CHAN_TYPE 0x42 |
| 139 | |
| 140 | #define VIA_BASE0_AC97_CTRL 0x80 |
| 141 | #define VIA_BASE0_SGD_STATUS_SHADOW 0x84 |
| 142 | #define VIA_BASE0_GPI_INT_ENABLE 0x8C |
| 143 | #define VIA_INTR_OUT ((1<<0) | (1<<4) | (1<<8)) |
| 144 | #define VIA_INTR_IN ((1<<1) | (1<<5) | (1<<9)) |
| 145 | #define VIA_INTR_FM ((1<<2) | (1<<6) | (1<<10)) |
| 146 | #define VIA_INTR_MASK (VIA_INTR_OUT | VIA_INTR_IN | VIA_INTR_FM) |
| 147 | |
| 148 | /* Newer VIA we need to monitor the low 3 bits of each channel. This |
| 149 | mask covers the channels we don't yet use as well |
| 150 | */ |
| 151 | |
| 152 | #define VIA_NEW_INTR_MASK 0x77077777UL |
| 153 | |
| 154 | /* VIA_BASE0_AUDIO_xxx_CHAN_TYPE bits */ |
| 155 | #define VIA_IRQ_ON_FLAG (1<<0) /* int on each flagged scatter block */ |
| 156 | #define VIA_IRQ_ON_EOL (1<<1) /* int at end of scatter list */ |
| 157 | #define VIA_INT_SEL_PCI_LAST_LINE_READ (0) /* int at PCI read of last line */ |
| 158 | #define VIA_INT_SEL_LAST_SAMPLE_SENT (1<<2) /* int at last sample sent */ |
| 159 | #define VIA_INT_SEL_ONE_LINE_LEFT (1<<3) /* int at less than one line to send */ |
| 160 | #define VIA_PCM_FMT_STEREO (1<<4) /* PCM stereo format (bit clear == mono) */ |
| 161 | #define VIA_PCM_FMT_16BIT (1<<5) /* PCM 16-bit format (bit clear == 8-bit) */ |
| 162 | #define VIA_PCM_REC_FIFO (1<<6) /* PCM Recording FIFO */ |
| 163 | #define VIA_RESTART_SGD_ON_EOL (1<<7) /* restart scatter-gather at EOL */ |
| 164 | #define VIA_PCM_FMT_MASK (VIA_PCM_FMT_STEREO|VIA_PCM_FMT_16BIT) |
| 165 | #define VIA_CHAN_TYPE_MASK (VIA_RESTART_SGD_ON_EOL | \ |
| 166 | VIA_IRQ_ON_FLAG | \ |
| 167 | VIA_IRQ_ON_EOL) |
| 168 | #define VIA_CHAN_TYPE_INT_SELECT (VIA_INT_SEL_LAST_SAMPLE_SENT) |
| 169 | |
| 170 | /* PCI configuration register bits and masks */ |
| 171 | #define VIA_CR40_AC97_READY 0x01 |
| 172 | #define VIA_CR40_AC97_LOW_POWER 0x02 |
| 173 | #define VIA_CR40_SECONDARY_READY 0x04 |
| 174 | |
| 175 | #define VIA_CR41_AC97_ENABLE 0x80 /* enable AC97 codec */ |
| 176 | #define VIA_CR41_AC97_RESET 0x40 /* clear bit to reset AC97 */ |
| 177 | #define VIA_CR41_AC97_WAKEUP 0x20 /* wake up from power-down mode */ |
| 178 | #define VIA_CR41_AC97_SDO 0x10 /* force Serial Data Out (SDO) high */ |
| 179 | #define VIA_CR41_VRA 0x08 /* enable variable sample rate */ |
| 180 | #define VIA_CR41_PCM_ENABLE 0x04 /* AC Link SGD Read Channel PCM Data Output */ |
| 181 | #define VIA_CR41_FM_PCM_ENABLE 0x02 /* AC Link FM Channel PCM Data Out */ |
| 182 | #define VIA_CR41_SB_PCM_ENABLE 0x01 /* AC Link SB PCM Data Output */ |
| 183 | #define VIA_CR41_BOOT_MASK (VIA_CR41_AC97_ENABLE | \ |
| 184 | VIA_CR41_AC97_WAKEUP | \ |
| 185 | VIA_CR41_AC97_SDO) |
| 186 | #define VIA_CR41_RUN_MASK (VIA_CR41_AC97_ENABLE | \ |
| 187 | VIA_CR41_AC97_RESET | \ |
| 188 | VIA_CR41_VRA | \ |
| 189 | VIA_CR41_PCM_ENABLE) |
| 190 | |
| 191 | #define VIA_CR42_SB_ENABLE 0x01 |
| 192 | #define VIA_CR42_MIDI_ENABLE 0x02 |
| 193 | #define VIA_CR42_FM_ENABLE 0x04 |
| 194 | #define VIA_CR42_GAME_ENABLE 0x08 |
| 195 | #define VIA_CR42_MIDI_IRQMASK 0x40 |
| 196 | #define VIA_CR42_MIDI_PNP 0x80 |
| 197 | |
| 198 | #define VIA_CR44_SECOND_CODEC_SUPPORT (1 << 6) |
| 199 | #define VIA_CR44_AC_LINK_ACCESS (1 << 7) |
| 200 | |
| 201 | #define VIA_CR48_FM_TRAP_TO_NMI (1 << 2) |
| 202 | |
| 203 | /* controller base 0 register bitmasks */ |
| 204 | #define VIA_INT_DISABLE_MASK (~(0x01|0x02)) |
| 205 | #define VIA_SGD_STOPPED (1 << 2) |
| 206 | #define VIA_SGD_PAUSED (1 << 6) |
| 207 | #define VIA_SGD_ACTIVE (1 << 7) |
| 208 | #define VIA_SGD_TERMINATE (1 << 6) |
| 209 | #define VIA_SGD_FLAG (1 << 0) |
| 210 | #define VIA_SGD_EOL (1 << 1) |
| 211 | #define VIA_SGD_START (1 << 7) |
| 212 | |
| 213 | #define VIA_CR80_FIRST_CODEC 0 |
| 214 | #define VIA_CR80_SECOND_CODEC (1 << 30) |
| 215 | #define VIA_CR80_FIRST_CODEC_VALID (1 << 25) |
| 216 | #define VIA_CR80_VALID (1 << 25) |
| 217 | #define VIA_CR80_SECOND_CODEC_VALID (1 << 27) |
| 218 | #define VIA_CR80_BUSY (1 << 24) |
| 219 | #define VIA_CR83_BUSY (1) |
| 220 | #define VIA_CR83_FIRST_CODEC_VALID (1 << 1) |
| 221 | #define VIA_CR80_READ (1 << 23) |
| 222 | #define VIA_CR80_WRITE_MODE 0 |
| 223 | #define VIA_CR80_REG_IDX(idx) ((((idx) & 0xFF) >> 1) << 16) |
| 224 | |
| 225 | /* capabilities we announce */ |
| 226 | #ifdef VIA_SUPPORT_MMAP |
| 227 | #define VIA_DSP_CAP (DSP_CAP_REVISION | DSP_CAP_DUPLEX | DSP_CAP_MMAP | \ |
| 228 | DSP_CAP_TRIGGER | DSP_CAP_REALTIME) |
| 229 | #else |
| 230 | #define VIA_DSP_CAP (DSP_CAP_REVISION | DSP_CAP_DUPLEX | \ |
| 231 | DSP_CAP_TRIGGER | DSP_CAP_REALTIME) |
| 232 | #endif |
| 233 | |
| 234 | /* scatter-gather DMA table entry, exactly as passed to hardware */ |
| 235 | struct via_sgd_table { |
| 236 | u32 addr; |
| 237 | u32 count; /* includes additional VIA_xxx bits also */ |
| 238 | }; |
| 239 | |
| 240 | #define VIA_EOL (1 << 31) |
| 241 | #define VIA_FLAG (1 << 30) |
| 242 | #define VIA_STOP (1 << 29) |
| 243 | |
| 244 | |
| 245 | enum via_channel_states { |
| 246 | sgd_stopped = 0, |
| 247 | sgd_in_progress = 1, |
| 248 | }; |
| 249 | |
| 250 | |
| 251 | struct via_buffer_pgtbl { |
| 252 | dma_addr_t handle; |
| 253 | void *cpuaddr; |
| 254 | }; |
| 255 | |
| 256 | |
| 257 | struct via_channel { |
| 258 | atomic_t n_frags; |
| 259 | atomic_t hw_ptr; |
| 260 | wait_queue_head_t wait; |
| 261 | |
| 262 | unsigned int sw_ptr; |
| 263 | unsigned int slop_len; |
| 264 | unsigned int n_irqs; |
| 265 | int bytes; |
| 266 | |
| 267 | unsigned is_active : 1; |
| 268 | unsigned is_record : 1; |
| 269 | unsigned is_mapped : 1; |
| 270 | unsigned is_enabled : 1; |
| 271 | unsigned is_multi: 1; /* 8233 6 channel */ |
| 272 | u8 pcm_fmt; /* VIA_PCM_FMT_xxx */ |
| 273 | u8 channels; /* Channel count */ |
| 274 | |
| 275 | unsigned rate; /* sample rate */ |
| 276 | unsigned int frag_size; |
| 277 | unsigned int frag_number; |
| 278 | |
| 279 | unsigned char intmask; |
| 280 | |
| 281 | volatile struct via_sgd_table *sgtable; |
| 282 | dma_addr_t sgt_handle; |
| 283 | |
| 284 | unsigned int page_number; |
| 285 | struct via_buffer_pgtbl pgtbl[VIA_MAX_BUFFER_DMA_PAGES]; |
| 286 | |
| 287 | long iobase; |
| 288 | |
| 289 | const char *name; |
| 290 | }; |
| 291 | |
| 292 | |
| 293 | /* data stored for each chip */ |
| 294 | struct via_info { |
| 295 | struct pci_dev *pdev; |
| 296 | long baseaddr; |
| 297 | |
| 298 | struct ac97_codec *ac97; |
| 299 | spinlock_t ac97_lock; |
| 300 | spinlock_t lock; |
| 301 | int card_num; /* unique card number, from 0 */ |
| 302 | |
| 303 | int dev_dsp; /* /dev/dsp index from register_sound_dsp() */ |
| 304 | |
| 305 | unsigned rev_h : 1; |
| 306 | unsigned legacy: 1; /* Has legacy ports */ |
| 307 | unsigned intmask: 1; /* Needs int bits */ |
| 308 | unsigned sixchannel: 1; /* 8233/35 with 6 channel support */ |
| 309 | unsigned volume: 1; |
| 310 | |
Randy Dunlap | 1e866f0 | 2006-06-28 04:26:58 -0700 | [diff] [blame] | 311 | unsigned locked_rate : 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | |
| 313 | int mixer_vol; /* 8233/35 volume - not yet implemented */ |
| 314 | |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 315 | struct mutex syscall_mutex; |
| 316 | struct mutex open_mutex; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | |
| 318 | /* The 8233/8235 have 4 DX audio channels, two record and |
| 319 | one six channel out. We bind ch_in to DX 1, ch_out to multichannel |
| 320 | and ch_fm to DX 2. DX 3 and REC0/REC1 are unused at the |
| 321 | moment */ |
| 322 | |
| 323 | struct via_channel ch_in; |
| 324 | struct via_channel ch_out; |
| 325 | struct via_channel ch_fm; |
| 326 | |
| 327 | #ifdef CONFIG_MIDI_VIA82CXXX |
| 328 | void *midi_devc; |
| 329 | struct address_info midi_info; |
| 330 | #endif |
| 331 | }; |
| 332 | |
| 333 | |
| 334 | /* number of cards, used for assigning unique numbers to cards */ |
| 335 | static unsigned via_num_cards; |
| 336 | |
| 337 | |
| 338 | |
| 339 | /**************************************************************** |
| 340 | * |
| 341 | * prototypes |
| 342 | * |
| 343 | * |
| 344 | */ |
| 345 | |
| 346 | static int via_init_one (struct pci_dev *dev, const struct pci_device_id *id); |
| 347 | static void __devexit via_remove_one (struct pci_dev *pdev); |
| 348 | |
| 349 | static ssize_t via_dsp_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos); |
| 350 | static ssize_t via_dsp_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos); |
| 351 | static unsigned int via_dsp_poll(struct file *file, struct poll_table_struct *wait); |
| 352 | static int via_dsp_ioctl (struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg); |
| 353 | static int via_dsp_open (struct inode *inode, struct file *file); |
| 354 | static int via_dsp_release(struct inode *inode, struct file *file); |
| 355 | static int via_dsp_mmap(struct file *file, struct vm_area_struct *vma); |
| 356 | |
| 357 | static u16 via_ac97_read_reg (struct ac97_codec *codec, u8 reg); |
| 358 | static void via_ac97_write_reg (struct ac97_codec *codec, u8 reg, u16 value); |
| 359 | static u8 via_ac97_wait_idle (struct via_info *card); |
| 360 | |
| 361 | static void via_chan_free (struct via_info *card, struct via_channel *chan); |
| 362 | static void via_chan_clear (struct via_info *card, struct via_channel *chan); |
| 363 | static void via_chan_pcm_fmt (struct via_channel *chan, int reset); |
| 364 | static void via_chan_buffer_free (struct via_info *card, struct via_channel *chan); |
| 365 | |
| 366 | |
| 367 | /**************************************************************** |
| 368 | * |
| 369 | * Various data the driver needs |
| 370 | * |
| 371 | * |
| 372 | */ |
| 373 | |
| 374 | |
| 375 | static struct pci_device_id via_pci_tbl[] = { |
| 376 | { PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_5, |
| 377 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
| 378 | { PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_5, |
| 379 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1}, |
| 380 | { 0, } |
| 381 | }; |
| 382 | MODULE_DEVICE_TABLE(pci,via_pci_tbl); |
| 383 | |
| 384 | |
| 385 | static struct pci_driver via_driver = { |
| 386 | .name = VIA_MODULE_NAME, |
| 387 | .id_table = via_pci_tbl, |
| 388 | .probe = via_init_one, |
| 389 | .remove = __devexit_p(via_remove_one), |
| 390 | }; |
| 391 | |
| 392 | |
| 393 | /**************************************************************** |
| 394 | * |
| 395 | * Low-level base 0 register read/write helpers |
| 396 | * |
| 397 | * |
| 398 | */ |
| 399 | |
| 400 | /** |
| 401 | * via_chan_stop - Terminate DMA on specified PCM channel |
| 402 | * @iobase: PCI base address for SGD channel registers |
| 403 | * |
| 404 | * Terminate scatter-gather DMA operation for given |
| 405 | * channel (derived from @iobase), if DMA is active. |
| 406 | * |
| 407 | * Note that @iobase is not the PCI base address, |
| 408 | * but the PCI base address plus an offset to |
| 409 | * one of three PCM channels supported by the chip. |
| 410 | * |
| 411 | */ |
| 412 | |
| 413 | static inline void via_chan_stop (long iobase) |
| 414 | { |
| 415 | if (inb (iobase + VIA_PCM_STATUS) & VIA_SGD_ACTIVE) |
| 416 | outb (VIA_SGD_TERMINATE, iobase + VIA_PCM_CONTROL); |
| 417 | } |
| 418 | |
| 419 | |
| 420 | /** |
| 421 | * via_chan_status_clear - Clear status flags on specified DMA channel |
| 422 | * @iobase: PCI base address for SGD channel registers |
| 423 | * |
| 424 | * Clear any pending status flags for the given |
| 425 | * DMA channel (derived from @iobase), if any |
| 426 | * flags are asserted. |
| 427 | * |
| 428 | * Note that @iobase is not the PCI base address, |
| 429 | * but the PCI base address plus an offset to |
| 430 | * one of three PCM channels supported by the chip. |
| 431 | * |
| 432 | */ |
| 433 | |
| 434 | static inline void via_chan_status_clear (long iobase) |
| 435 | { |
| 436 | u8 tmp = inb (iobase + VIA_PCM_STATUS); |
| 437 | |
| 438 | if (tmp != 0) |
| 439 | outb (tmp, iobase + VIA_PCM_STATUS); |
| 440 | } |
| 441 | |
| 442 | |
| 443 | /** |
| 444 | * sg_begin - Begin recording or playback on a PCM channel |
| 445 | * @chan: Channel for which DMA operation shall begin |
| 446 | * |
| 447 | * Start scatter-gather DMA for the given channel. |
| 448 | * |
| 449 | */ |
| 450 | |
| 451 | static inline void sg_begin (struct via_channel *chan) |
| 452 | { |
| 453 | DPRINTK("Start with intmask %d\n", chan->intmask); |
| 454 | DPRINTK("About to start from %d to %d\n", |
| 455 | inl(chan->iobase + VIA_PCM_BLOCK_COUNT), |
| 456 | inb(chan->iobase + VIA_PCM_STOPRATE + 3)); |
| 457 | outb (VIA_SGD_START|chan->intmask, chan->iobase + VIA_PCM_CONTROL); |
| 458 | DPRINTK("Status is now %02X\n", inb(chan->iobase + VIA_PCM_STATUS)); |
| 459 | DPRINTK("Control is now %02X\n", inb(chan->iobase + VIA_PCM_CONTROL)); |
| 460 | } |
| 461 | |
| 462 | |
| 463 | static int sg_active (long iobase) |
| 464 | { |
| 465 | u8 tmp = inb (iobase + VIA_PCM_STATUS); |
| 466 | if ((tmp & VIA_SGD_STOPPED) || (tmp & VIA_SGD_PAUSED)) { |
| 467 | printk(KERN_WARNING "via82cxxx warning: SG stopped or paused\n"); |
| 468 | return 0; |
| 469 | } |
| 470 | if (tmp & VIA_SGD_ACTIVE) |
| 471 | return 1; |
| 472 | return 0; |
| 473 | } |
| 474 | |
| 475 | static int via_sg_offset(struct via_channel *chan) |
| 476 | { |
| 477 | return inl (chan->iobase + VIA_PCM_BLOCK_COUNT) & 0x00FFFFFF; |
| 478 | } |
| 479 | |
| 480 | /**************************************************************** |
| 481 | * |
| 482 | * Miscellaneous debris |
| 483 | * |
| 484 | * |
| 485 | */ |
| 486 | |
| 487 | |
| 488 | /** |
| 489 | * via_syscall_down - down the card-specific syscell semaphore |
| 490 | * @card: Private info for specified board |
| 491 | * @nonblock: boolean, non-zero if O_NONBLOCK is set |
| 492 | * |
| 493 | * Encapsulates standard method of acquiring the syscall sem. |
| 494 | * |
| 495 | * Returns negative errno on error, or zero for success. |
| 496 | */ |
| 497 | |
| 498 | static inline int via_syscall_down (struct via_info *card, int nonblock) |
| 499 | { |
| 500 | /* Thomas Sailer: |
| 501 | * EAGAIN is supposed to be used if IO is pending, |
| 502 | * not if there is contention on some internal |
| 503 | * synchronization primitive which should be |
| 504 | * held only for a short time anyway |
| 505 | */ |
| 506 | nonblock = 0; |
| 507 | |
| 508 | if (nonblock) { |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 509 | if (!mutex_trylock(&card->syscall_mutex)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | return -EAGAIN; |
| 511 | } else { |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 512 | if (mutex_lock_interruptible(&card->syscall_mutex)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | return -ERESTARTSYS; |
| 514 | } |
| 515 | |
| 516 | return 0; |
| 517 | } |
| 518 | |
| 519 | |
| 520 | /** |
| 521 | * via_stop_everything - Stop all audio operations |
| 522 | * @card: Private info for specified board |
| 523 | * |
| 524 | * Stops all DMA operations and interrupts, and clear |
| 525 | * any pending status bits resulting from those operations. |
| 526 | */ |
| 527 | |
| 528 | static void via_stop_everything (struct via_info *card) |
| 529 | { |
| 530 | u8 tmp, new_tmp; |
| 531 | |
| 532 | DPRINTK ("ENTER\n"); |
| 533 | |
| 534 | assert (card != NULL); |
| 535 | |
| 536 | /* |
| 537 | * terminate any existing operations on audio read/write channels |
| 538 | */ |
| 539 | via_chan_stop (card->baseaddr + VIA_BASE0_PCM_OUT_CHAN); |
| 540 | via_chan_stop (card->baseaddr + VIA_BASE0_PCM_IN_CHAN); |
| 541 | via_chan_stop (card->baseaddr + VIA_BASE0_FM_OUT_CHAN); |
| 542 | if(card->sixchannel) |
| 543 | via_chan_stop (card->baseaddr + VIA_BASE0_MULTI_OUT_CHAN); |
| 544 | |
| 545 | /* |
| 546 | * clear any existing stops / flags (sanity check mainly) |
| 547 | */ |
| 548 | via_chan_status_clear (card->baseaddr + VIA_BASE0_PCM_OUT_CHAN); |
| 549 | via_chan_status_clear (card->baseaddr + VIA_BASE0_PCM_IN_CHAN); |
| 550 | via_chan_status_clear (card->baseaddr + VIA_BASE0_FM_OUT_CHAN); |
| 551 | if(card->sixchannel) |
| 552 | via_chan_status_clear (card->baseaddr + VIA_BASE0_MULTI_OUT_CHAN); |
| 553 | |
| 554 | /* |
| 555 | * clear any enabled interrupt bits |
| 556 | */ |
| 557 | tmp = inb (card->baseaddr + VIA_BASE0_PCM_OUT_CHAN_TYPE); |
| 558 | new_tmp = tmp & ~(VIA_IRQ_ON_FLAG|VIA_IRQ_ON_EOL|VIA_RESTART_SGD_ON_EOL); |
| 559 | if (tmp != new_tmp) |
| 560 | outb (0, card->baseaddr + VIA_BASE0_PCM_OUT_CHAN_TYPE); |
| 561 | |
| 562 | tmp = inb (card->baseaddr + VIA_BASE0_PCM_IN_CHAN_TYPE); |
| 563 | new_tmp = tmp & ~(VIA_IRQ_ON_FLAG|VIA_IRQ_ON_EOL|VIA_RESTART_SGD_ON_EOL); |
| 564 | if (tmp != new_tmp) |
| 565 | outb (0, card->baseaddr + VIA_BASE0_PCM_IN_CHAN_TYPE); |
| 566 | |
| 567 | tmp = inb (card->baseaddr + VIA_BASE0_FM_OUT_CHAN_TYPE); |
| 568 | new_tmp = tmp & ~(VIA_IRQ_ON_FLAG|VIA_IRQ_ON_EOL|VIA_RESTART_SGD_ON_EOL); |
| 569 | if (tmp != new_tmp) |
| 570 | outb (0, card->baseaddr + VIA_BASE0_FM_OUT_CHAN_TYPE); |
| 571 | |
| 572 | if(card->sixchannel) |
| 573 | { |
| 574 | tmp = inb (card->baseaddr + VIA_BASE0_MULTI_OUT_CHAN_TYPE); |
| 575 | new_tmp = tmp & ~(VIA_IRQ_ON_FLAG|VIA_IRQ_ON_EOL|VIA_RESTART_SGD_ON_EOL); |
| 576 | if (tmp != new_tmp) |
| 577 | outb (0, card->baseaddr + VIA_BASE0_MULTI_OUT_CHAN_TYPE); |
| 578 | } |
| 579 | |
| 580 | udelay(10); |
| 581 | |
| 582 | /* |
| 583 | * clear any existing flags |
| 584 | */ |
| 585 | via_chan_status_clear (card->baseaddr + VIA_BASE0_PCM_OUT_CHAN); |
| 586 | via_chan_status_clear (card->baseaddr + VIA_BASE0_PCM_IN_CHAN); |
| 587 | via_chan_status_clear (card->baseaddr + VIA_BASE0_FM_OUT_CHAN); |
| 588 | |
| 589 | DPRINTK ("EXIT\n"); |
| 590 | } |
| 591 | |
| 592 | |
| 593 | /** |
| 594 | * via_set_rate - Set PCM rate for given channel |
| 595 | * @ac97: Pointer to generic codec info struct |
| 596 | * @chan: Private info for specified channel |
| 597 | * @rate: Desired PCM sample rate, in Khz |
| 598 | * |
| 599 | * Sets the PCM sample rate for a channel. |
| 600 | * |
| 601 | * Values for @rate are clamped to a range of 4000 Khz through 48000 Khz, |
| 602 | * due to hardware constraints. |
| 603 | */ |
| 604 | |
| 605 | static int via_set_rate (struct ac97_codec *ac97, |
| 606 | struct via_channel *chan, unsigned rate) |
| 607 | { |
| 608 | struct via_info *card = ac97->private_data; |
| 609 | int rate_reg; |
| 610 | u32 dacp; |
| 611 | u32 mast_vol, phone_vol, mono_vol, pcm_vol; |
| 612 | u32 mute_vol = 0x8000; /* The mute volume? -- Seems to work! */ |
| 613 | |
| 614 | DPRINTK ("ENTER, rate = %d\n", rate); |
| 615 | |
| 616 | if (chan->rate == rate) |
| 617 | goto out; |
| 618 | if (card->locked_rate) { |
| 619 | chan->rate = 48000; |
| 620 | goto out; |
| 621 | } |
| 622 | |
| 623 | if (rate > 48000) rate = 48000; |
| 624 | if (rate < 4000) rate = 4000; |
| 625 | |
| 626 | rate_reg = chan->is_record ? AC97_PCM_LR_ADC_RATE : |
| 627 | AC97_PCM_FRONT_DAC_RATE; |
| 628 | |
| 629 | /* Save current state */ |
| 630 | dacp=via_ac97_read_reg(ac97, AC97_POWER_CONTROL); |
| 631 | mast_vol = via_ac97_read_reg(ac97, AC97_MASTER_VOL_STEREO); |
| 632 | mono_vol = via_ac97_read_reg(ac97, AC97_MASTER_VOL_MONO); |
| 633 | phone_vol = via_ac97_read_reg(ac97, AC97_HEADPHONE_VOL); |
| 634 | pcm_vol = via_ac97_read_reg(ac97, AC97_PCMOUT_VOL); |
| 635 | /* Mute - largely reduces popping */ |
| 636 | via_ac97_write_reg(ac97, AC97_MASTER_VOL_STEREO, mute_vol); |
| 637 | via_ac97_write_reg(ac97, AC97_MASTER_VOL_MONO, mute_vol); |
| 638 | via_ac97_write_reg(ac97, AC97_HEADPHONE_VOL, mute_vol); |
| 639 | via_ac97_write_reg(ac97, AC97_PCMOUT_VOL, mute_vol); |
| 640 | /* Power down the DAC */ |
| 641 | via_ac97_write_reg(ac97, AC97_POWER_CONTROL, dacp|0x0200); |
| 642 | |
| 643 | /* Set new rate */ |
| 644 | via_ac97_write_reg (ac97, rate_reg, rate); |
| 645 | |
| 646 | /* Power DAC back up */ |
| 647 | via_ac97_write_reg(ac97, AC97_POWER_CONTROL, dacp); |
| 648 | udelay (200); /* reduces popping */ |
| 649 | |
| 650 | /* Restore volumes */ |
| 651 | via_ac97_write_reg(ac97, AC97_MASTER_VOL_STEREO, mast_vol); |
| 652 | via_ac97_write_reg(ac97, AC97_MASTER_VOL_MONO, mono_vol); |
| 653 | via_ac97_write_reg(ac97, AC97_HEADPHONE_VOL, phone_vol); |
| 654 | via_ac97_write_reg(ac97, AC97_PCMOUT_VOL, pcm_vol); |
| 655 | |
| 656 | /* the hardware might return a value different than what we |
| 657 | * passed to it, so read the rate value back from hardware |
| 658 | * to see what we came up with |
| 659 | */ |
| 660 | chan->rate = via_ac97_read_reg (ac97, rate_reg); |
| 661 | |
| 662 | if (chan->rate == 0) { |
| 663 | card->locked_rate = 1; |
| 664 | chan->rate = 48000; |
| 665 | printk (KERN_WARNING PFX "Codec rate locked at 48Khz\n"); |
| 666 | } |
| 667 | |
| 668 | out: |
| 669 | DPRINTK ("EXIT, returning rate %d Hz\n", chan->rate); |
| 670 | return chan->rate; |
| 671 | } |
| 672 | |
| 673 | |
| 674 | /**************************************************************** |
| 675 | * |
| 676 | * Channel-specific operations |
| 677 | * |
| 678 | * |
| 679 | */ |
| 680 | |
| 681 | |
| 682 | /** |
| 683 | * via_chan_init_defaults - Initialize a struct via_channel |
| 684 | * @card: Private audio chip info |
| 685 | * @chan: Channel to be initialized |
| 686 | * |
| 687 | * Zero @chan, and then set all static defaults for the structure. |
| 688 | */ |
| 689 | |
| 690 | static void via_chan_init_defaults (struct via_info *card, struct via_channel *chan) |
| 691 | { |
| 692 | memset (chan, 0, sizeof (*chan)); |
| 693 | |
| 694 | if(card->intmask) |
| 695 | chan->intmask = 0x23; /* Turn on the IRQ bits */ |
| 696 | |
| 697 | if (chan == &card->ch_out) { |
| 698 | chan->name = "PCM-OUT"; |
| 699 | if(card->sixchannel) |
| 700 | { |
| 701 | chan->iobase = card->baseaddr + VIA_BASE0_MULTI_OUT_CHAN; |
| 702 | chan->is_multi = 1; |
| 703 | DPRINTK("Using multichannel for pcm out\n"); |
| 704 | } |
| 705 | else |
| 706 | chan->iobase = card->baseaddr + VIA_BASE0_PCM_OUT_CHAN; |
| 707 | } else if (chan == &card->ch_in) { |
| 708 | chan->name = "PCM-IN"; |
| 709 | chan->iobase = card->baseaddr + VIA_BASE0_PCM_IN_CHAN; |
| 710 | chan->is_record = 1; |
| 711 | } else if (chan == &card->ch_fm) { |
| 712 | chan->name = "PCM-OUT-FM"; |
| 713 | chan->iobase = card->baseaddr + VIA_BASE0_FM_OUT_CHAN; |
| 714 | } else { |
| 715 | BUG(); |
| 716 | } |
| 717 | |
| 718 | init_waitqueue_head (&chan->wait); |
| 719 | |
| 720 | chan->pcm_fmt = VIA_PCM_FMT_MASK; |
| 721 | chan->is_enabled = 1; |
| 722 | |
| 723 | chan->frag_number = 0; |
| 724 | chan->frag_size = 0; |
| 725 | atomic_set(&chan->n_frags, 0); |
| 726 | atomic_set (&chan->hw_ptr, 0); |
| 727 | } |
| 728 | |
| 729 | /** |
| 730 | * via_chan_init - Initialize PCM channel |
| 731 | * @card: Private audio chip info |
| 732 | * @chan: Channel to be initialized |
| 733 | * |
| 734 | * Performs some of the preparations necessary to begin |
| 735 | * using a PCM channel. |
| 736 | * |
| 737 | * Currently the preparations consist of |
| 738 | * setting the PCM channel to a known state. |
| 739 | */ |
| 740 | |
| 741 | |
| 742 | static void via_chan_init (struct via_info *card, struct via_channel *chan) |
| 743 | { |
| 744 | |
| 745 | DPRINTK ("ENTER\n"); |
| 746 | |
| 747 | /* bzero channel structure, and init members to defaults */ |
| 748 | via_chan_init_defaults (card, chan); |
| 749 | |
| 750 | /* stop any existing channel output */ |
| 751 | via_chan_clear (card, chan); |
| 752 | via_chan_status_clear (chan->iobase); |
| 753 | via_chan_pcm_fmt (chan, 1); |
| 754 | |
| 755 | DPRINTK ("EXIT\n"); |
| 756 | } |
| 757 | |
| 758 | /** |
| 759 | * via_chan_buffer_init - Initialize PCM channel buffer |
| 760 | * @card: Private audio chip info |
| 761 | * @chan: Channel to be initialized |
| 762 | * |
| 763 | * Performs some of the preparations necessary to begin |
| 764 | * using a PCM channel. |
| 765 | * |
| 766 | * Currently the preparations include allocating the |
| 767 | * scatter-gather DMA table and buffers, |
| 768 | * and passing the |
| 769 | * address of the DMA table to the hardware. |
| 770 | * |
| 771 | * Note that special care is taken when passing the |
| 772 | * DMA table address to hardware, because it was found |
| 773 | * during driver development that the hardware did not |
| 774 | * always "take" the address. |
| 775 | */ |
| 776 | |
| 777 | static int via_chan_buffer_init (struct via_info *card, struct via_channel *chan) |
| 778 | { |
| 779 | int page, offset; |
| 780 | int i; |
| 781 | |
| 782 | DPRINTK ("ENTER\n"); |
| 783 | |
| 784 | |
| 785 | chan->intmask = 0; |
| 786 | if(card->intmask) |
| 787 | chan->intmask = 0x23; /* Turn on the IRQ bits */ |
| 788 | |
| 789 | if (chan->sgtable != NULL) { |
| 790 | DPRINTK ("EXIT\n"); |
| 791 | return 0; |
| 792 | } |
| 793 | |
| 794 | /* alloc DMA-able memory for scatter-gather table */ |
| 795 | chan->sgtable = pci_alloc_consistent (card->pdev, |
| 796 | (sizeof (struct via_sgd_table) * chan->frag_number), |
| 797 | &chan->sgt_handle); |
| 798 | if (!chan->sgtable) { |
| 799 | printk (KERN_ERR PFX "DMA table alloc fail, aborting\n"); |
| 800 | DPRINTK ("EXIT\n"); |
| 801 | return -ENOMEM; |
| 802 | } |
| 803 | |
| 804 | memset ((void*)chan->sgtable, 0, |
| 805 | (sizeof (struct via_sgd_table) * chan->frag_number)); |
| 806 | |
| 807 | /* alloc DMA-able memory for scatter-gather buffers */ |
| 808 | |
| 809 | chan->page_number = (chan->frag_number * chan->frag_size) / PAGE_SIZE + |
| 810 | (((chan->frag_number * chan->frag_size) % PAGE_SIZE) ? 1 : 0); |
| 811 | |
| 812 | for (i = 0; i < chan->page_number; i++) { |
| 813 | chan->pgtbl[i].cpuaddr = pci_alloc_consistent (card->pdev, PAGE_SIZE, |
| 814 | &chan->pgtbl[i].handle); |
| 815 | |
| 816 | if (!chan->pgtbl[i].cpuaddr) { |
| 817 | chan->page_number = i; |
| 818 | goto err_out_nomem; |
| 819 | } |
| 820 | |
| 821 | #ifndef VIA_NDEBUG |
| 822 | memset (chan->pgtbl[i].cpuaddr, 0xBC, chan->frag_size); |
| 823 | #endif |
| 824 | |
| 825 | #if 1 |
| 826 | DPRINTK ("dmabuf_pg #%d (h=%lx, v2p=%lx, a=%p)\n", |
| 827 | i, (long)chan->pgtbl[i].handle, |
| 828 | virt_to_phys(chan->pgtbl[i].cpuaddr), |
| 829 | chan->pgtbl[i].cpuaddr); |
| 830 | #endif |
| 831 | } |
| 832 | |
| 833 | for (i = 0; i < chan->frag_number; i++) { |
| 834 | |
| 835 | page = i / (PAGE_SIZE / chan->frag_size); |
| 836 | offset = (i % (PAGE_SIZE / chan->frag_size)) * chan->frag_size; |
| 837 | |
| 838 | chan->sgtable[i].count = cpu_to_le32 (chan->frag_size | VIA_FLAG); |
| 839 | chan->sgtable[i].addr = cpu_to_le32 (chan->pgtbl[page].handle + offset); |
| 840 | |
| 841 | #if 1 |
| 842 | DPRINTK ("dmabuf #%d (32(h)=%lx)\n", |
| 843 | i, |
| 844 | (long)chan->sgtable[i].addr); |
| 845 | #endif |
| 846 | } |
| 847 | |
| 848 | /* overwrite the last buffer information */ |
| 849 | chan->sgtable[chan->frag_number - 1].count = cpu_to_le32 (chan->frag_size | VIA_EOL); |
| 850 | |
| 851 | /* set location of DMA-able scatter-gather info table */ |
| 852 | DPRINTK ("outl (0x%X, 0x%04lX)\n", |
| 853 | chan->sgt_handle, chan->iobase + VIA_PCM_TABLE_ADDR); |
| 854 | |
| 855 | via_ac97_wait_idle (card); |
| 856 | outl (chan->sgt_handle, chan->iobase + VIA_PCM_TABLE_ADDR); |
| 857 | udelay (20); |
| 858 | via_ac97_wait_idle (card); |
| 859 | /* load no rate adaption, stereo 16bit, set up ring slots */ |
| 860 | if(card->sixchannel) |
| 861 | { |
| 862 | if(!chan->is_multi) |
| 863 | { |
| 864 | outl (0xFFFFF | (0x3 << 20) | (chan->frag_number << 24), chan->iobase + VIA_PCM_STOPRATE); |
| 865 | udelay (20); |
| 866 | via_ac97_wait_idle (card); |
| 867 | } |
| 868 | } |
| 869 | |
| 870 | DPRINTK ("inl (0x%lX) = %x\n", |
| 871 | chan->iobase + VIA_PCM_TABLE_ADDR, |
| 872 | inl(chan->iobase + VIA_PCM_TABLE_ADDR)); |
| 873 | |
| 874 | DPRINTK ("EXIT\n"); |
| 875 | return 0; |
| 876 | |
| 877 | err_out_nomem: |
| 878 | printk (KERN_ERR PFX "DMA buffer alloc fail, aborting\n"); |
| 879 | via_chan_buffer_free (card, chan); |
| 880 | DPRINTK ("EXIT\n"); |
| 881 | return -ENOMEM; |
| 882 | } |
| 883 | |
| 884 | |
| 885 | /** |
| 886 | * via_chan_free - Release a PCM channel |
| 887 | * @card: Private audio chip info |
| 888 | * @chan: Channel to be released |
| 889 | * |
| 890 | * Performs all the functions necessary to clean up |
| 891 | * an initialized channel. |
| 892 | * |
| 893 | * Currently these functions include disabled any |
| 894 | * active DMA operations, setting the PCM channel |
| 895 | * back to a known state, and releasing any allocated |
| 896 | * sound buffers. |
| 897 | */ |
| 898 | |
| 899 | static void via_chan_free (struct via_info *card, struct via_channel *chan) |
| 900 | { |
| 901 | DPRINTK ("ENTER\n"); |
| 902 | |
| 903 | spin_lock_irq (&card->lock); |
| 904 | |
| 905 | /* stop any existing channel output */ |
| 906 | via_chan_status_clear (chan->iobase); |
| 907 | via_chan_stop (chan->iobase); |
| 908 | via_chan_status_clear (chan->iobase); |
| 909 | |
| 910 | spin_unlock_irq (&card->lock); |
| 911 | |
| 912 | synchronize_irq(card->pdev->irq); |
| 913 | |
| 914 | DPRINTK ("EXIT\n"); |
| 915 | } |
| 916 | |
| 917 | static void via_chan_buffer_free (struct via_info *card, struct via_channel *chan) |
| 918 | { |
| 919 | int i; |
| 920 | |
| 921 | DPRINTK ("ENTER\n"); |
| 922 | |
| 923 | /* zero location of DMA-able scatter-gather info table */ |
| 924 | via_ac97_wait_idle(card); |
| 925 | outl (0, chan->iobase + VIA_PCM_TABLE_ADDR); |
| 926 | |
| 927 | for (i = 0; i < chan->page_number; i++) |
| 928 | if (chan->pgtbl[i].cpuaddr) { |
| 929 | pci_free_consistent (card->pdev, PAGE_SIZE, |
| 930 | chan->pgtbl[i].cpuaddr, |
| 931 | chan->pgtbl[i].handle); |
| 932 | chan->pgtbl[i].cpuaddr = NULL; |
| 933 | chan->pgtbl[i].handle = 0; |
| 934 | } |
| 935 | |
| 936 | chan->page_number = 0; |
| 937 | |
| 938 | if (chan->sgtable) { |
| 939 | pci_free_consistent (card->pdev, |
| 940 | (sizeof (struct via_sgd_table) * chan->frag_number), |
| 941 | (void*)chan->sgtable, chan->sgt_handle); |
| 942 | chan->sgtable = NULL; |
| 943 | } |
| 944 | |
| 945 | DPRINTK ("EXIT\n"); |
| 946 | } |
| 947 | |
| 948 | |
| 949 | /** |
| 950 | * via_chan_pcm_fmt - Update PCM channel settings |
| 951 | * @chan: Channel to be updated |
| 952 | * @reset: Boolean. If non-zero, channel will be reset |
| 953 | * to 8-bit mono mode. |
| 954 | * |
| 955 | * Stores the settings of the current PCM format, |
| 956 | * 8-bit or 16-bit, and mono/stereo, into the |
| 957 | * hardware settings for the specified channel. |
| 958 | * If @reset is non-zero, the channel is reset |
| 959 | * to 8-bit mono mode. Otherwise, the channel |
| 960 | * is set to the values stored in the channel |
| 961 | * information struct @chan. |
| 962 | */ |
| 963 | |
| 964 | static void via_chan_pcm_fmt (struct via_channel *chan, int reset) |
| 965 | { |
| 966 | DPRINTK ("ENTER, pcm_fmt=0x%02X, reset=%s\n", |
| 967 | chan->pcm_fmt, reset ? "yes" : "no"); |
| 968 | |
| 969 | assert (chan != NULL); |
| 970 | |
| 971 | if (reset) |
| 972 | { |
| 973 | /* reset to 8-bit mono mode */ |
| 974 | chan->pcm_fmt = 0; |
| 975 | chan->channels = 1; |
| 976 | } |
| 977 | |
| 978 | /* enable interrupts on FLAG and EOL */ |
| 979 | chan->pcm_fmt |= VIA_CHAN_TYPE_MASK; |
| 980 | |
| 981 | /* if we are recording, enable recording fifo bit */ |
| 982 | if (chan->is_record) |
| 983 | chan->pcm_fmt |= VIA_PCM_REC_FIFO; |
| 984 | /* set interrupt select bits where applicable (PCM in & out channels) */ |
| 985 | if (!chan->is_record) |
| 986 | chan->pcm_fmt |= VIA_CHAN_TYPE_INT_SELECT; |
| 987 | |
| 988 | DPRINTK("SET FMT - %02x %02x\n", chan->intmask , chan->is_multi); |
| 989 | |
| 990 | if(chan->intmask) |
| 991 | { |
| 992 | u32 m; |
| 993 | |
| 994 | /* |
| 995 | * Channel 0x4 is up to 6 x 16bit and has to be |
| 996 | * programmed differently |
| 997 | */ |
| 998 | |
| 999 | if(chan->is_multi) |
| 1000 | { |
| 1001 | u8 c = 0; |
| 1002 | |
| 1003 | /* |
| 1004 | * Load the type bit for num channels |
| 1005 | * and 8/16bit |
| 1006 | */ |
| 1007 | |
| 1008 | if(chan->pcm_fmt & VIA_PCM_FMT_16BIT) |
| 1009 | c = 1 << 7; |
| 1010 | if(chan->pcm_fmt & VIA_PCM_FMT_STEREO) |
| 1011 | c |= (2<<4); |
| 1012 | else |
| 1013 | c |= (1<<4); |
| 1014 | |
| 1015 | outb(c, chan->iobase + VIA_PCM_TYPE); |
| 1016 | |
| 1017 | /* |
| 1018 | * Set the channel steering |
| 1019 | * Mono |
| 1020 | * Channel 0 to slot 3 |
| 1021 | * Channel 0 to slot 4 |
| 1022 | * Stereo |
| 1023 | * Channel 0 to slot 3 |
| 1024 | * Channel 1 to slot 4 |
| 1025 | */ |
| 1026 | |
| 1027 | switch(chan->channels) |
| 1028 | { |
| 1029 | case 1: |
| 1030 | outl(0xFF000000 | (1<<0) | (1<<4) , chan->iobase + VIA_PCM_STOPRATE); |
| 1031 | break; |
| 1032 | case 2: |
| 1033 | outl(0xFF000000 | (1<<0) | (2<<4) , chan->iobase + VIA_PCM_STOPRATE); |
| 1034 | break; |
| 1035 | case 4: |
| 1036 | outl(0xFF000000 | (1<<0) | (2<<4) | (3<<8) | (4<<12), chan->iobase + VIA_PCM_STOPRATE); |
| 1037 | break; |
| 1038 | case 6: |
| 1039 | outl(0xFF000000 | (1<<0) | (2<<4) | (5<<8) | (6<<12) | (3<<16) | (4<<20), chan->iobase + VIA_PCM_STOPRATE); |
| 1040 | break; |
| 1041 | } |
| 1042 | } |
| 1043 | else |
| 1044 | { |
| 1045 | /* |
| 1046 | * New style, turn off channel volume |
| 1047 | * control, set bits in the right register |
| 1048 | */ |
| 1049 | outb(0x0, chan->iobase + VIA_PCM_LEFTVOL); |
| 1050 | outb(0x0, chan->iobase + VIA_PCM_RIGHTVOL); |
| 1051 | |
| 1052 | m = inl(chan->iobase + VIA_PCM_STOPRATE); |
| 1053 | m &= ~(3<<20); |
| 1054 | if(chan->pcm_fmt & VIA_PCM_FMT_STEREO) |
| 1055 | m |= (1 << 20); |
| 1056 | if(chan->pcm_fmt & VIA_PCM_FMT_16BIT) |
| 1057 | m |= (1 << 21); |
| 1058 | outl(m, chan->iobase + VIA_PCM_STOPRATE); |
| 1059 | } |
| 1060 | } |
| 1061 | else |
| 1062 | outb (chan->pcm_fmt, chan->iobase + VIA_PCM_TYPE); |
| 1063 | |
| 1064 | |
| 1065 | DPRINTK ("EXIT, pcm_fmt = 0x%02X, reg = 0x%02X\n", |
| 1066 | chan->pcm_fmt, |
| 1067 | inb (chan->iobase + VIA_PCM_TYPE)); |
| 1068 | } |
| 1069 | |
| 1070 | |
| 1071 | /** |
| 1072 | * via_chan_clear - Stop DMA channel operation, and reset pointers |
| 1073 | * @card: the chip to accessed |
| 1074 | * @chan: Channel to be cleared |
| 1075 | * |
| 1076 | * Call via_chan_stop to halt DMA operations, and then resets |
| 1077 | * all software pointers which track DMA operation. |
| 1078 | */ |
| 1079 | |
| 1080 | static void via_chan_clear (struct via_info *card, struct via_channel *chan) |
| 1081 | { |
| 1082 | DPRINTK ("ENTER\n"); |
| 1083 | via_chan_stop (chan->iobase); |
| 1084 | via_chan_buffer_free(card, chan); |
| 1085 | chan->is_active = 0; |
| 1086 | chan->is_mapped = 0; |
| 1087 | chan->is_enabled = 1; |
| 1088 | chan->slop_len = 0; |
| 1089 | chan->sw_ptr = 0; |
| 1090 | chan->n_irqs = 0; |
| 1091 | atomic_set (&chan->hw_ptr, 0); |
| 1092 | DPRINTK ("EXIT\n"); |
| 1093 | } |
| 1094 | |
| 1095 | |
| 1096 | /** |
| 1097 | * via_chan_set_speed - Set PCM sample rate for given channel |
| 1098 | * @card: Private info for specified board |
| 1099 | * @chan: Channel whose sample rate will be adjusted |
| 1100 | * @val: New sample rate, in Khz |
| 1101 | * |
| 1102 | * Helper function for the %SNDCTL_DSP_SPEED ioctl. OSS semantics |
| 1103 | * demand that all audio operations halt (if they are not already |
| 1104 | * halted) when the %SNDCTL_DSP_SPEED is given. |
| 1105 | * |
| 1106 | * This function halts all audio operations for the given channel |
| 1107 | * @chan, and then calls via_set_rate to set the audio hardware |
| 1108 | * to the new rate. |
| 1109 | */ |
| 1110 | |
| 1111 | static int via_chan_set_speed (struct via_info *card, |
| 1112 | struct via_channel *chan, int val) |
| 1113 | { |
| 1114 | DPRINTK ("ENTER, requested rate = %d\n", val); |
| 1115 | |
| 1116 | via_chan_clear (card, chan); |
| 1117 | |
| 1118 | val = via_set_rate (card->ac97, chan, val); |
| 1119 | |
| 1120 | DPRINTK ("EXIT, returning %d\n", val); |
| 1121 | return val; |
| 1122 | } |
| 1123 | |
| 1124 | |
| 1125 | /** |
| 1126 | * via_chan_set_fmt - Set PCM sample size for given channel |
| 1127 | * @card: Private info for specified board |
| 1128 | * @chan: Channel whose sample size will be adjusted |
| 1129 | * @val: New sample size, use the %AFMT_xxx constants |
| 1130 | * |
| 1131 | * Helper function for the %SNDCTL_DSP_SETFMT ioctl. OSS semantics |
| 1132 | * demand that all audio operations halt (if they are not already |
| 1133 | * halted) when the %SNDCTL_DSP_SETFMT is given. |
| 1134 | * |
| 1135 | * This function halts all audio operations for the given channel |
| 1136 | * @chan, and then calls via_chan_pcm_fmt to set the audio hardware |
| 1137 | * to the new sample size, either 8-bit or 16-bit. |
| 1138 | */ |
| 1139 | |
| 1140 | static int via_chan_set_fmt (struct via_info *card, |
| 1141 | struct via_channel *chan, int val) |
| 1142 | { |
| 1143 | DPRINTK ("ENTER, val=%s\n", |
| 1144 | val == AFMT_U8 ? "AFMT_U8" : |
| 1145 | val == AFMT_S16_LE ? "AFMT_S16_LE" : |
| 1146 | "unknown"); |
| 1147 | |
| 1148 | via_chan_clear (card, chan); |
| 1149 | |
| 1150 | assert (val != AFMT_QUERY); /* this case is handled elsewhere */ |
| 1151 | |
| 1152 | switch (val) { |
| 1153 | case AFMT_S16_LE: |
| 1154 | if ((chan->pcm_fmt & VIA_PCM_FMT_16BIT) == 0) { |
| 1155 | chan->pcm_fmt |= VIA_PCM_FMT_16BIT; |
| 1156 | via_chan_pcm_fmt (chan, 0); |
| 1157 | } |
| 1158 | break; |
| 1159 | |
| 1160 | case AFMT_U8: |
| 1161 | if (chan->pcm_fmt & VIA_PCM_FMT_16BIT) { |
| 1162 | chan->pcm_fmt &= ~VIA_PCM_FMT_16BIT; |
| 1163 | via_chan_pcm_fmt (chan, 0); |
| 1164 | } |
| 1165 | break; |
| 1166 | |
| 1167 | default: |
| 1168 | DPRINTK ("unknown AFMT: 0x%X\n", val); |
| 1169 | val = AFMT_S16_LE; |
| 1170 | } |
| 1171 | |
| 1172 | DPRINTK ("EXIT\n"); |
| 1173 | return val; |
| 1174 | } |
| 1175 | |
| 1176 | |
| 1177 | /** |
| 1178 | * via_chan_set_stereo - Enable or disable stereo for a DMA channel |
| 1179 | * @card: Private info for specified board |
| 1180 | * @chan: Channel whose stereo setting will be adjusted |
| 1181 | * @val: New sample size, use the %AFMT_xxx constants |
| 1182 | * |
| 1183 | * Helper function for the %SNDCTL_DSP_CHANNELS and %SNDCTL_DSP_STEREO ioctls. OSS semantics |
| 1184 | * demand that all audio operations halt (if they are not already |
| 1185 | * halted) when %SNDCTL_DSP_CHANNELS or SNDCTL_DSP_STEREO is given. |
| 1186 | * |
| 1187 | * This function halts all audio operations for the given channel |
| 1188 | * @chan, and then calls via_chan_pcm_fmt to set the audio hardware |
| 1189 | * to enable or disable stereo. |
| 1190 | */ |
| 1191 | |
| 1192 | static int via_chan_set_stereo (struct via_info *card, |
| 1193 | struct via_channel *chan, int val) |
| 1194 | { |
| 1195 | DPRINTK ("ENTER, channels = %d\n", val); |
| 1196 | |
| 1197 | via_chan_clear (card, chan); |
| 1198 | |
| 1199 | switch (val) { |
| 1200 | |
| 1201 | /* mono */ |
| 1202 | case 1: |
| 1203 | chan->pcm_fmt &= ~VIA_PCM_FMT_STEREO; |
| 1204 | chan->channels = 1; |
| 1205 | via_chan_pcm_fmt (chan, 0); |
| 1206 | break; |
| 1207 | |
| 1208 | /* stereo */ |
| 1209 | case 2: |
| 1210 | chan->pcm_fmt |= VIA_PCM_FMT_STEREO; |
| 1211 | chan->channels = 2; |
| 1212 | via_chan_pcm_fmt (chan, 0); |
| 1213 | break; |
| 1214 | |
| 1215 | case 4: |
| 1216 | case 6: |
| 1217 | if(chan->is_multi) |
| 1218 | { |
| 1219 | chan->pcm_fmt |= VIA_PCM_FMT_STEREO; |
| 1220 | chan->channels = val; |
| 1221 | break; |
| 1222 | } |
| 1223 | /* unknown */ |
| 1224 | default: |
| 1225 | val = -EINVAL; |
| 1226 | break; |
| 1227 | } |
| 1228 | |
| 1229 | DPRINTK ("EXIT, returning %d\n", val); |
| 1230 | return val; |
| 1231 | } |
| 1232 | |
| 1233 | static int via_chan_set_buffering (struct via_info *card, |
| 1234 | struct via_channel *chan, int val) |
| 1235 | { |
| 1236 | int shift; |
| 1237 | |
| 1238 | DPRINTK ("ENTER\n"); |
| 1239 | |
| 1240 | /* in both cases the buffer cannot be changed */ |
| 1241 | if (chan->is_active || chan->is_mapped) { |
| 1242 | DPRINTK ("EXIT\n"); |
| 1243 | return -EINVAL; |
| 1244 | } |
| 1245 | |
| 1246 | /* called outside SETFRAGMENT */ |
| 1247 | /* set defaults or do nothing */ |
| 1248 | if (val < 0) { |
| 1249 | |
| 1250 | if (chan->frag_size && chan->frag_number) |
| 1251 | goto out; |
| 1252 | |
| 1253 | DPRINTK ("\n"); |
| 1254 | |
| 1255 | chan->frag_size = (VIA_DEFAULT_FRAG_TIME * chan->rate * chan->channels |
| 1256 | * ((chan->pcm_fmt & VIA_PCM_FMT_16BIT) ? 2 : 1)) / 1000 - 1; |
| 1257 | |
| 1258 | shift = 0; |
| 1259 | while (chan->frag_size) { |
| 1260 | chan->frag_size >>= 1; |
| 1261 | shift++; |
| 1262 | } |
| 1263 | chan->frag_size = 1 << shift; |
| 1264 | |
| 1265 | chan->frag_number = (VIA_DEFAULT_BUFFER_TIME / VIA_DEFAULT_FRAG_TIME); |
| 1266 | |
| 1267 | DPRINTK ("setting default values %d %d\n", chan->frag_size, chan->frag_number); |
| 1268 | } else { |
| 1269 | chan->frag_size = 1 << (val & 0xFFFF); |
| 1270 | chan->frag_number = (val >> 16) & 0xFFFF; |
| 1271 | |
| 1272 | DPRINTK ("using user values %d %d\n", chan->frag_size, chan->frag_number); |
| 1273 | } |
| 1274 | |
| 1275 | /* quake3 wants frag_number to be a power of two */ |
| 1276 | shift = 0; |
| 1277 | while (chan->frag_number) { |
| 1278 | chan->frag_number >>= 1; |
| 1279 | shift++; |
| 1280 | } |
| 1281 | chan->frag_number = 1 << shift; |
| 1282 | |
| 1283 | if (chan->frag_size > VIA_MAX_FRAG_SIZE) |
| 1284 | chan->frag_size = VIA_MAX_FRAG_SIZE; |
| 1285 | else if (chan->frag_size < VIA_MIN_FRAG_SIZE) |
| 1286 | chan->frag_size = VIA_MIN_FRAG_SIZE; |
| 1287 | |
| 1288 | if (chan->frag_number < VIA_MIN_FRAG_NUMBER) |
| 1289 | chan->frag_number = VIA_MIN_FRAG_NUMBER; |
| 1290 | if (chan->frag_number > VIA_MAX_FRAG_NUMBER) |
| 1291 | chan->frag_number = VIA_MAX_FRAG_NUMBER; |
| 1292 | |
| 1293 | if ((chan->frag_number * chan->frag_size) / PAGE_SIZE > VIA_MAX_BUFFER_DMA_PAGES) |
| 1294 | chan->frag_number = (VIA_MAX_BUFFER_DMA_PAGES * PAGE_SIZE) / chan->frag_size; |
| 1295 | |
| 1296 | out: |
| 1297 | if (chan->is_record) |
| 1298 | atomic_set (&chan->n_frags, 0); |
| 1299 | else |
| 1300 | atomic_set (&chan->n_frags, chan->frag_number); |
| 1301 | |
| 1302 | DPRINTK ("EXIT\n"); |
| 1303 | |
| 1304 | return 0; |
| 1305 | } |
| 1306 | |
| 1307 | #ifdef VIA_CHAN_DUMP_BUFS |
| 1308 | /** |
| 1309 | * via_chan_dump_bufs - Display DMA table contents |
| 1310 | * @chan: Channel whose DMA table will be displayed |
| 1311 | * |
| 1312 | * Debugging function which displays the contents of the |
| 1313 | * scatter-gather DMA table for the given channel @chan. |
| 1314 | */ |
| 1315 | |
| 1316 | static void via_chan_dump_bufs (struct via_channel *chan) |
| 1317 | { |
| 1318 | int i; |
| 1319 | |
| 1320 | for (i = 0; i < chan->frag_number; i++) { |
| 1321 | DPRINTK ("#%02d: addr=%x, count=%u, flag=%d, eol=%d\n", |
| 1322 | i, chan->sgtable[i].addr, |
| 1323 | chan->sgtable[i].count & 0x00FFFFFF, |
| 1324 | chan->sgtable[i].count & VIA_FLAG ? 1 : 0, |
| 1325 | chan->sgtable[i].count & VIA_EOL ? 1 : 0); |
| 1326 | } |
| 1327 | DPRINTK ("buf_in_use = %d, nextbuf = %d\n", |
| 1328 | atomic_read (&chan->buf_in_use), |
| 1329 | atomic_read (&chan->sw_ptr)); |
| 1330 | } |
| 1331 | #endif /* VIA_CHAN_DUMP_BUFS */ |
| 1332 | |
| 1333 | |
| 1334 | /** |
| 1335 | * via_chan_flush_frag - Flush partially-full playback buffer to hardware |
| 1336 | * @chan: Channel whose DMA table will be flushed |
| 1337 | * |
| 1338 | * Flushes partially-full playback buffer to hardware. |
| 1339 | */ |
| 1340 | |
| 1341 | static void via_chan_flush_frag (struct via_channel *chan) |
| 1342 | { |
| 1343 | DPRINTK ("ENTER\n"); |
| 1344 | |
| 1345 | assert (chan->slop_len > 0); |
| 1346 | |
| 1347 | if (chan->sw_ptr == (chan->frag_number - 1)) |
| 1348 | chan->sw_ptr = 0; |
| 1349 | else |
| 1350 | chan->sw_ptr++; |
| 1351 | |
| 1352 | chan->slop_len = 0; |
| 1353 | |
| 1354 | assert (atomic_read (&chan->n_frags) > 0); |
| 1355 | atomic_dec (&chan->n_frags); |
| 1356 | |
| 1357 | DPRINTK ("EXIT\n"); |
| 1358 | } |
| 1359 | |
| 1360 | |
| 1361 | |
| 1362 | /** |
| 1363 | * via_chan_maybe_start - Initiate audio hardware DMA operation |
| 1364 | * @chan: Channel whose DMA is to be started |
| 1365 | * |
| 1366 | * Initiate DMA operation, if the DMA engine for the given |
| 1367 | * channel @chan is not already active. |
| 1368 | */ |
| 1369 | |
| 1370 | static inline void via_chan_maybe_start (struct via_channel *chan) |
| 1371 | { |
| 1372 | assert (chan->is_active == sg_active(chan->iobase)); |
| 1373 | |
| 1374 | DPRINTK ("MAYBE START %s\n", chan->name); |
| 1375 | if (!chan->is_active && chan->is_enabled) { |
| 1376 | chan->is_active = 1; |
| 1377 | sg_begin (chan); |
| 1378 | DPRINTK ("starting channel %s\n", chan->name); |
| 1379 | } |
| 1380 | } |
| 1381 | |
| 1382 | |
| 1383 | /**************************************************************** |
| 1384 | * |
| 1385 | * Interface to ac97-codec module |
| 1386 | * |
| 1387 | * |
| 1388 | */ |
| 1389 | |
| 1390 | /** |
| 1391 | * via_ac97_wait_idle - Wait until AC97 codec is not busy |
| 1392 | * @card: Private info for specified board |
| 1393 | * |
| 1394 | * Sleep until the AC97 codec is no longer busy. |
| 1395 | * Returns the final value read from the SGD |
| 1396 | * register being polled. |
| 1397 | */ |
| 1398 | |
| 1399 | static u8 via_ac97_wait_idle (struct via_info *card) |
| 1400 | { |
| 1401 | u8 tmp8; |
| 1402 | int counter = VIA_COUNTER_LIMIT; |
| 1403 | |
| 1404 | DPRINTK ("ENTER/EXIT\n"); |
| 1405 | |
| 1406 | assert (card != NULL); |
| 1407 | assert (card->pdev != NULL); |
| 1408 | |
| 1409 | do { |
| 1410 | udelay (15); |
| 1411 | |
| 1412 | tmp8 = inb (card->baseaddr + 0x83); |
| 1413 | } while ((tmp8 & VIA_CR83_BUSY) && (counter-- > 0)); |
| 1414 | |
| 1415 | if (tmp8 & VIA_CR83_BUSY) |
| 1416 | printk (KERN_WARNING PFX "timeout waiting on AC97 codec\n"); |
| 1417 | return tmp8; |
| 1418 | } |
| 1419 | |
| 1420 | |
| 1421 | /** |
| 1422 | * via_ac97_read_reg - Read AC97 standard register |
| 1423 | * @codec: Pointer to generic AC97 codec info |
| 1424 | * @reg: Index of AC97 register to be read |
| 1425 | * |
| 1426 | * Read the value of a single AC97 codec register, |
| 1427 | * as defined by the Intel AC97 specification. |
| 1428 | * |
| 1429 | * Defines the standard AC97 read-register operation |
| 1430 | * required by the kernel's ac97_codec interface. |
| 1431 | * |
| 1432 | * Returns the 16-bit value stored in the specified |
| 1433 | * register. |
| 1434 | */ |
| 1435 | |
| 1436 | static u16 via_ac97_read_reg (struct ac97_codec *codec, u8 reg) |
| 1437 | { |
| 1438 | unsigned long data; |
| 1439 | struct via_info *card; |
| 1440 | int counter; |
| 1441 | |
| 1442 | DPRINTK ("ENTER\n"); |
| 1443 | |
| 1444 | assert (codec != NULL); |
| 1445 | assert (codec->private_data != NULL); |
| 1446 | |
| 1447 | card = codec->private_data; |
| 1448 | |
| 1449 | spin_lock(&card->ac97_lock); |
| 1450 | |
| 1451 | /* Every time we write to register 80 we cause a transaction. |
| 1452 | The only safe way to clear the valid bit is to write it at |
| 1453 | the same time as the command */ |
| 1454 | data = (reg << 16) | VIA_CR80_READ | VIA_CR80_VALID; |
| 1455 | |
| 1456 | outl (data, card->baseaddr + VIA_BASE0_AC97_CTRL); |
| 1457 | udelay (20); |
| 1458 | |
| 1459 | for (counter = VIA_COUNTER_LIMIT; counter > 0; counter--) { |
| 1460 | udelay (1); |
| 1461 | if ((((data = inl(card->baseaddr + VIA_BASE0_AC97_CTRL)) & |
| 1462 | (VIA_CR80_VALID|VIA_CR80_BUSY)) == VIA_CR80_VALID)) |
| 1463 | goto out; |
| 1464 | } |
| 1465 | |
| 1466 | printk (KERN_WARNING PFX "timeout while reading AC97 codec (0x%lX)\n", data); |
| 1467 | goto err_out; |
| 1468 | |
| 1469 | out: |
| 1470 | /* Once the valid bit has become set, we must wait a complete AC97 |
| 1471 | frame before the data has settled. */ |
| 1472 | udelay(25); |
| 1473 | data = (unsigned long) inl (card->baseaddr + VIA_BASE0_AC97_CTRL); |
| 1474 | |
| 1475 | outb (0x02, card->baseaddr + 0x83); |
| 1476 | |
| 1477 | if (((data & 0x007F0000) >> 16) == reg) { |
| 1478 | DPRINTK ("EXIT, success, data=0x%lx, retval=0x%lx\n", |
| 1479 | data, data & 0x0000FFFF); |
| 1480 | spin_unlock(&card->ac97_lock); |
| 1481 | return data & 0x0000FFFF; |
| 1482 | } |
| 1483 | |
| 1484 | printk (KERN_WARNING "via82cxxx_audio: not our index: reg=0x%x, newreg=0x%lx\n", |
| 1485 | reg, ((data & 0x007F0000) >> 16)); |
| 1486 | |
| 1487 | err_out: |
| 1488 | spin_unlock(&card->ac97_lock); |
| 1489 | DPRINTK ("EXIT, returning 0\n"); |
| 1490 | return 0; |
| 1491 | } |
| 1492 | |
| 1493 | |
| 1494 | /** |
| 1495 | * via_ac97_write_reg - Write AC97 standard register |
| 1496 | * @codec: Pointer to generic AC97 codec info |
| 1497 | * @reg: Index of AC97 register to be written |
| 1498 | * @value: Value to be written to AC97 register |
| 1499 | * |
| 1500 | * Write the value of a single AC97 codec register, |
| 1501 | * as defined by the Intel AC97 specification. |
| 1502 | * |
| 1503 | * Defines the standard AC97 write-register operation |
| 1504 | * required by the kernel's ac97_codec interface. |
| 1505 | */ |
| 1506 | |
| 1507 | static void via_ac97_write_reg (struct ac97_codec *codec, u8 reg, u16 value) |
| 1508 | { |
| 1509 | u32 data; |
| 1510 | struct via_info *card; |
| 1511 | int counter; |
| 1512 | |
| 1513 | DPRINTK ("ENTER\n"); |
| 1514 | |
| 1515 | assert (codec != NULL); |
| 1516 | assert (codec->private_data != NULL); |
| 1517 | |
| 1518 | card = codec->private_data; |
| 1519 | |
| 1520 | spin_lock(&card->ac97_lock); |
| 1521 | |
| 1522 | data = (reg << 16) + value; |
| 1523 | outl (data, card->baseaddr + VIA_BASE0_AC97_CTRL); |
| 1524 | udelay (10); |
| 1525 | |
| 1526 | for (counter = VIA_COUNTER_LIMIT; counter > 0; counter--) { |
| 1527 | if ((inb (card->baseaddr + 0x83) & VIA_CR83_BUSY) == 0) |
| 1528 | goto out; |
| 1529 | |
| 1530 | udelay (15); |
| 1531 | } |
| 1532 | |
| 1533 | printk (KERN_WARNING PFX "timeout after AC97 codec write (0x%X, 0x%X)\n", reg, value); |
| 1534 | |
| 1535 | out: |
| 1536 | spin_unlock(&card->ac97_lock); |
| 1537 | DPRINTK ("EXIT\n"); |
| 1538 | } |
| 1539 | |
| 1540 | |
| 1541 | static int via_mixer_open (struct inode *inode, struct file *file) |
| 1542 | { |
| 1543 | int minor = iminor(inode); |
| 1544 | struct via_info *card; |
| 1545 | struct pci_dev *pdev = NULL; |
| 1546 | struct pci_driver *drvr; |
| 1547 | |
| 1548 | DPRINTK ("ENTER\n"); |
| 1549 | |
Alan Cox | 14fef64 | 2006-09-30 23:27:26 -0700 | [diff] [blame] | 1550 | while ((pdev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pdev)) != NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1551 | drvr = pci_dev_driver (pdev); |
| 1552 | if (drvr == &via_driver) { |
| 1553 | assert (pci_get_drvdata (pdev) != NULL); |
| 1554 | |
| 1555 | card = pci_get_drvdata (pdev); |
| 1556 | if (card->ac97->dev_mixer == minor) |
| 1557 | goto match; |
| 1558 | } |
| 1559 | } |
| 1560 | |
| 1561 | DPRINTK ("EXIT, returning -ENODEV\n"); |
| 1562 | return -ENODEV; |
| 1563 | |
| 1564 | match: |
Alan Cox | 14fef64 | 2006-09-30 23:27:26 -0700 | [diff] [blame] | 1565 | pci_dev_put(pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1566 | file->private_data = card->ac97; |
| 1567 | |
| 1568 | DPRINTK ("EXIT, returning 0\n"); |
| 1569 | return nonseekable_open(inode, file); |
| 1570 | } |
| 1571 | |
| 1572 | static int via_mixer_ioctl (struct inode *inode, struct file *file, unsigned int cmd, |
| 1573 | unsigned long arg) |
| 1574 | { |
| 1575 | struct ac97_codec *codec = file->private_data; |
| 1576 | struct via_info *card; |
| 1577 | int nonblock = (file->f_flags & O_NONBLOCK); |
| 1578 | int rc; |
| 1579 | |
| 1580 | DPRINTK ("ENTER\n"); |
| 1581 | |
| 1582 | assert (codec != NULL); |
| 1583 | card = codec->private_data; |
| 1584 | assert (card != NULL); |
| 1585 | |
| 1586 | rc = via_syscall_down (card, nonblock); |
| 1587 | if (rc) goto out; |
| 1588 | |
| 1589 | #if 0 |
| 1590 | /* |
| 1591 | * Intercept volume control on 8233 and 8235 |
| 1592 | */ |
| 1593 | if(card->volume) |
| 1594 | { |
| 1595 | switch(cmd) |
| 1596 | { |
| 1597 | case SOUND_MIXER_READ_VOLUME: |
| 1598 | return card->mixer_vol; |
| 1599 | case SOUND_MIXER_WRITE_VOLUME: |
| 1600 | { |
| 1601 | int v; |
| 1602 | if(get_user(v, (int *)arg)) |
| 1603 | { |
| 1604 | rc = -EFAULT; |
| 1605 | goto out; |
| 1606 | } |
| 1607 | card->mixer_vol = v; |
| 1608 | } |
| 1609 | } |
| 1610 | } |
| 1611 | #endif |
| 1612 | rc = codec->mixer_ioctl(codec, cmd, arg); |
| 1613 | |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 1614 | mutex_unlock(&card->syscall_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1615 | |
| 1616 | out: |
| 1617 | DPRINTK ("EXIT, returning %d\n", rc); |
| 1618 | return rc; |
| 1619 | } |
| 1620 | |
| 1621 | |
Arjan van de Ven | 9c2e08c | 2007-02-12 00:55:37 -0800 | [diff] [blame] | 1622 | static const struct file_operations via_mixer_fops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1623 | .owner = THIS_MODULE, |
| 1624 | .open = via_mixer_open, |
| 1625 | .llseek = no_llseek, |
| 1626 | .ioctl = via_mixer_ioctl, |
| 1627 | }; |
| 1628 | |
| 1629 | |
| 1630 | static int __devinit via_ac97_reset (struct via_info *card) |
| 1631 | { |
| 1632 | struct pci_dev *pdev = card->pdev; |
| 1633 | u8 tmp8; |
| 1634 | u16 tmp16; |
| 1635 | |
| 1636 | DPRINTK ("ENTER\n"); |
| 1637 | |
| 1638 | assert (pdev != NULL); |
| 1639 | |
| 1640 | #ifndef NDEBUG |
| 1641 | { |
| 1642 | u8 r40,r41,r42,r43,r44,r48; |
| 1643 | pci_read_config_byte (card->pdev, 0x40, &r40); |
| 1644 | pci_read_config_byte (card->pdev, 0x41, &r41); |
| 1645 | pci_read_config_byte (card->pdev, 0x42, &r42); |
| 1646 | pci_read_config_byte (card->pdev, 0x43, &r43); |
| 1647 | pci_read_config_byte (card->pdev, 0x44, &r44); |
| 1648 | pci_read_config_byte (card->pdev, 0x48, &r48); |
| 1649 | DPRINTK ("PCI config: %02X %02X %02X %02X %02X %02X\n", |
| 1650 | r40,r41,r42,r43,r44,r48); |
| 1651 | |
| 1652 | spin_lock_irq (&card->lock); |
| 1653 | DPRINTK ("regs==%02X %02X %02X %08X %08X %08X %08X\n", |
| 1654 | inb (card->baseaddr + 0x00), |
| 1655 | inb (card->baseaddr + 0x01), |
| 1656 | inb (card->baseaddr + 0x02), |
| 1657 | inl (card->baseaddr + 0x04), |
| 1658 | inl (card->baseaddr + 0x0C), |
| 1659 | inl (card->baseaddr + 0x80), |
| 1660 | inl (card->baseaddr + 0x84)); |
| 1661 | spin_unlock_irq (&card->lock); |
| 1662 | |
| 1663 | } |
| 1664 | #endif |
| 1665 | |
| 1666 | /* |
| 1667 | * Reset AC97 controller: enable, disable, enable, |
| 1668 | * pausing after each command for good luck. Only |
| 1669 | * do this if the codec is not ready, because it causes |
| 1670 | * loud pops and such due to such a hard codec reset. |
| 1671 | */ |
| 1672 | pci_read_config_byte (pdev, VIA_ACLINK_STATUS, &tmp8); |
| 1673 | if ((tmp8 & VIA_CR40_AC97_READY) == 0) { |
| 1674 | pci_write_config_byte (pdev, VIA_ACLINK_CTRL, |
| 1675 | VIA_CR41_AC97_ENABLE | |
| 1676 | VIA_CR41_AC97_RESET | |
| 1677 | VIA_CR41_AC97_WAKEUP); |
| 1678 | udelay (100); |
| 1679 | |
| 1680 | pci_write_config_byte (pdev, VIA_ACLINK_CTRL, 0); |
| 1681 | udelay (100); |
| 1682 | |
| 1683 | pci_write_config_byte (pdev, VIA_ACLINK_CTRL, |
| 1684 | VIA_CR41_AC97_ENABLE | |
| 1685 | VIA_CR41_PCM_ENABLE | |
| 1686 | VIA_CR41_VRA | VIA_CR41_AC97_RESET); |
| 1687 | udelay (100); |
| 1688 | } |
| 1689 | |
| 1690 | /* Make sure VRA is enabled, in case we didn't do a |
| 1691 | * complete codec reset, above |
| 1692 | */ |
| 1693 | pci_read_config_byte (pdev, VIA_ACLINK_CTRL, &tmp8); |
| 1694 | if (((tmp8 & VIA_CR41_VRA) == 0) || |
| 1695 | ((tmp8 & VIA_CR41_AC97_ENABLE) == 0) || |
| 1696 | ((tmp8 & VIA_CR41_PCM_ENABLE) == 0) || |
| 1697 | ((tmp8 & VIA_CR41_AC97_RESET) == 0)) { |
| 1698 | pci_write_config_byte (pdev, VIA_ACLINK_CTRL, |
| 1699 | VIA_CR41_AC97_ENABLE | |
| 1700 | VIA_CR41_PCM_ENABLE | |
| 1701 | VIA_CR41_VRA | VIA_CR41_AC97_RESET); |
| 1702 | udelay (100); |
| 1703 | } |
| 1704 | |
| 1705 | if(card->legacy) |
| 1706 | { |
| 1707 | #if 0 /* this breaks on K7M */ |
| 1708 | /* disable legacy stuff */ |
| 1709 | pci_write_config_byte (pdev, 0x42, 0x00); |
| 1710 | udelay(10); |
| 1711 | #endif |
| 1712 | |
| 1713 | /* route FM trap to IRQ, disable FM trap */ |
| 1714 | pci_write_config_byte (pdev, 0x48, 0x05); |
| 1715 | udelay(10); |
| 1716 | } |
| 1717 | |
| 1718 | /* disable all codec GPI interrupts */ |
| 1719 | outl (0, pci_resource_start (pdev, 0) + 0x8C); |
| 1720 | |
| 1721 | /* WARNING: this line is magic. Remove this |
| 1722 | * and things break. */ |
| 1723 | /* enable variable rate */ |
| 1724 | tmp16 = via_ac97_read_reg (card->ac97, AC97_EXTENDED_STATUS); |
| 1725 | if ((tmp16 & 1) == 0) |
| 1726 | via_ac97_write_reg (card->ac97, AC97_EXTENDED_STATUS, tmp16 | 1); |
| 1727 | |
| 1728 | DPRINTK ("EXIT, returning 0\n"); |
| 1729 | return 0; |
| 1730 | } |
| 1731 | |
| 1732 | |
| 1733 | static void via_ac97_codec_wait (struct ac97_codec *codec) |
| 1734 | { |
| 1735 | assert (codec->private_data != NULL); |
| 1736 | via_ac97_wait_idle (codec->private_data); |
| 1737 | } |
| 1738 | |
| 1739 | |
| 1740 | static int __devinit via_ac97_init (struct via_info *card) |
| 1741 | { |
| 1742 | int rc; |
| 1743 | u16 tmp16; |
| 1744 | |
| 1745 | DPRINTK ("ENTER\n"); |
| 1746 | |
| 1747 | assert (card != NULL); |
| 1748 | |
| 1749 | card->ac97 = ac97_alloc_codec(); |
| 1750 | if(card->ac97 == NULL) |
| 1751 | return -ENOMEM; |
| 1752 | |
| 1753 | card->ac97->private_data = card; |
| 1754 | card->ac97->codec_read = via_ac97_read_reg; |
| 1755 | card->ac97->codec_write = via_ac97_write_reg; |
| 1756 | card->ac97->codec_wait = via_ac97_codec_wait; |
| 1757 | |
| 1758 | card->ac97->dev_mixer = register_sound_mixer (&via_mixer_fops, -1); |
| 1759 | if (card->ac97->dev_mixer < 0) { |
| 1760 | printk (KERN_ERR PFX "unable to register AC97 mixer, aborting\n"); |
| 1761 | DPRINTK ("EXIT, returning -EIO\n"); |
| 1762 | ac97_release_codec(card->ac97); |
| 1763 | return -EIO; |
| 1764 | } |
| 1765 | |
| 1766 | rc = via_ac97_reset (card); |
| 1767 | if (rc) { |
| 1768 | printk (KERN_ERR PFX "unable to reset AC97 codec, aborting\n"); |
| 1769 | goto err_out; |
| 1770 | } |
| 1771 | |
| 1772 | mdelay(10); |
| 1773 | |
| 1774 | if (ac97_probe_codec (card->ac97) == 0) { |
| 1775 | printk (KERN_ERR PFX "unable to probe AC97 codec, aborting\n"); |
| 1776 | rc = -EIO; |
| 1777 | goto err_out; |
| 1778 | } |
| 1779 | |
| 1780 | /* enable variable rate */ |
| 1781 | tmp16 = via_ac97_read_reg (card->ac97, AC97_EXTENDED_STATUS); |
| 1782 | via_ac97_write_reg (card->ac97, AC97_EXTENDED_STATUS, tmp16 | 1); |
| 1783 | |
| 1784 | /* |
| 1785 | * If we cannot enable VRA, we have a locked-rate codec. |
| 1786 | * We try again to enable VRA before assuming so, however. |
| 1787 | */ |
| 1788 | tmp16 = via_ac97_read_reg (card->ac97, AC97_EXTENDED_STATUS); |
| 1789 | if ((tmp16 & 1) == 0) { |
| 1790 | via_ac97_write_reg (card->ac97, AC97_EXTENDED_STATUS, tmp16 | 1); |
| 1791 | tmp16 = via_ac97_read_reg (card->ac97, AC97_EXTENDED_STATUS); |
| 1792 | if ((tmp16 & 1) == 0) { |
| 1793 | card->locked_rate = 1; |
| 1794 | printk (KERN_WARNING PFX "Codec rate locked at 48Khz\n"); |
| 1795 | } |
| 1796 | } |
| 1797 | |
| 1798 | DPRINTK ("EXIT, returning 0\n"); |
| 1799 | return 0; |
| 1800 | |
| 1801 | err_out: |
| 1802 | unregister_sound_mixer (card->ac97->dev_mixer); |
| 1803 | DPRINTK ("EXIT, returning %d\n", rc); |
| 1804 | ac97_release_codec(card->ac97); |
| 1805 | return rc; |
| 1806 | } |
| 1807 | |
| 1808 | |
| 1809 | static void via_ac97_cleanup (struct via_info *card) |
| 1810 | { |
| 1811 | DPRINTK ("ENTER\n"); |
| 1812 | |
| 1813 | assert (card != NULL); |
| 1814 | assert (card->ac97->dev_mixer >= 0); |
| 1815 | |
| 1816 | unregister_sound_mixer (card->ac97->dev_mixer); |
| 1817 | ac97_release_codec(card->ac97); |
| 1818 | |
| 1819 | DPRINTK ("EXIT\n"); |
| 1820 | } |
| 1821 | |
| 1822 | |
| 1823 | |
| 1824 | /**************************************************************** |
| 1825 | * |
| 1826 | * Interrupt-related code |
| 1827 | * |
| 1828 | */ |
| 1829 | |
| 1830 | /** |
| 1831 | * via_intr_channel - handle an interrupt for a single channel |
| 1832 | * @card: unused |
| 1833 | * @chan: handle interrupt for this channel |
| 1834 | * |
| 1835 | * This is the "meat" of the interrupt handler, |
| 1836 | * containing the actions taken each time an interrupt |
| 1837 | * occurs. All communication and coordination with |
| 1838 | * userspace takes place here. |
| 1839 | * |
| 1840 | * Locking: inside card->lock |
| 1841 | */ |
| 1842 | |
| 1843 | static void via_intr_channel (struct via_info *card, struct via_channel *chan) |
| 1844 | { |
| 1845 | u8 status; |
| 1846 | int n; |
| 1847 | |
| 1848 | /* check pertinent bits of status register for action bits */ |
| 1849 | status = inb (chan->iobase) & (VIA_SGD_FLAG | VIA_SGD_EOL | VIA_SGD_STOPPED); |
| 1850 | if (!status) |
| 1851 | return; |
| 1852 | |
| 1853 | /* acknowledge any flagged bits ASAP */ |
| 1854 | outb (status, chan->iobase); |
| 1855 | |
| 1856 | if (!chan->sgtable) /* XXX: temporary solution */ |
| 1857 | return; |
| 1858 | |
| 1859 | /* grab current h/w ptr value */ |
| 1860 | n = atomic_read (&chan->hw_ptr); |
| 1861 | |
| 1862 | /* sanity check: make sure our h/w ptr doesn't have a weird value */ |
| 1863 | assert (n >= 0); |
| 1864 | assert (n < chan->frag_number); |
| 1865 | |
| 1866 | |
| 1867 | /* reset SGD data structure in memory to reflect a full buffer, |
| 1868 | * and advance the h/w ptr, wrapping around to zero if needed |
| 1869 | */ |
| 1870 | if (n == (chan->frag_number - 1)) { |
| 1871 | chan->sgtable[n].count = cpu_to_le32(chan->frag_size | VIA_EOL); |
| 1872 | atomic_set (&chan->hw_ptr, 0); |
| 1873 | } else { |
| 1874 | chan->sgtable[n].count = cpu_to_le32(chan->frag_size | VIA_FLAG); |
| 1875 | atomic_inc (&chan->hw_ptr); |
| 1876 | } |
| 1877 | |
| 1878 | /* accounting crap for SNDCTL_DSP_GETxPTR */ |
| 1879 | chan->n_irqs++; |
| 1880 | chan->bytes += chan->frag_size; |
| 1881 | /* FIXME - signed overflow is undefined */ |
| 1882 | if (chan->bytes < 0) /* handle overflow of 31-bit value */ |
| 1883 | chan->bytes = chan->frag_size; |
| 1884 | /* all following checks only occur when not in mmap(2) mode */ |
| 1885 | if (!chan->is_mapped) |
| 1886 | { |
| 1887 | /* If we are recording, then n_frags represents the number |
| 1888 | * of fragments waiting to be handled by userspace. |
| 1889 | * If we are playback, then n_frags represents the number |
| 1890 | * of fragments remaining to be filled by userspace. |
| 1891 | * We increment here. If we reach max number of fragments, |
| 1892 | * this indicates an underrun/overrun. For this case under OSS, |
| 1893 | * we stop the record/playback process. |
| 1894 | */ |
| 1895 | if (atomic_read (&chan->n_frags) < chan->frag_number) |
| 1896 | atomic_inc (&chan->n_frags); |
| 1897 | assert (atomic_read (&chan->n_frags) <= chan->frag_number); |
| 1898 | if (atomic_read (&chan->n_frags) == chan->frag_number) { |
| 1899 | chan->is_active = 0; |
| 1900 | via_chan_stop (chan->iobase); |
| 1901 | } |
| 1902 | } |
| 1903 | /* wake up anyone listening to see when interrupts occur */ |
| 1904 | wake_up_all (&chan->wait); |
| 1905 | |
| 1906 | DPRINTK ("%s intr, status=0x%02X, hwptr=0x%lX, chan->hw_ptr=%d\n", |
| 1907 | chan->name, status, (long) inl (chan->iobase + 0x04), |
| 1908 | atomic_read (&chan->hw_ptr)); |
| 1909 | |
| 1910 | DPRINTK ("%s intr, channel n_frags == %d, missed %d\n", chan->name, |
| 1911 | atomic_read (&chan->n_frags), missed); |
| 1912 | } |
| 1913 | |
| 1914 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1915 | static irqreturn_t via_interrupt(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1916 | { |
| 1917 | struct via_info *card = dev_id; |
| 1918 | u32 status32; |
| 1919 | |
| 1920 | /* to minimize interrupt sharing costs, we use the SGD status |
| 1921 | * shadow register to check the status of all inputs and |
| 1922 | * outputs with a single 32-bit bus read. If no interrupt |
| 1923 | * conditions are flagged, we exit immediately |
| 1924 | */ |
| 1925 | status32 = inl (card->baseaddr + VIA_BASE0_SGD_STATUS_SHADOW); |
| 1926 | if (!(status32 & VIA_INTR_MASK)) |
| 1927 | { |
| 1928 | #ifdef CONFIG_MIDI_VIA82CXXX |
| 1929 | if (card->midi_devc) |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1930 | uart401intr(irq, card->midi_devc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1931 | #endif |
| 1932 | return IRQ_HANDLED; |
| 1933 | } |
| 1934 | DPRINTK ("intr, status32 == 0x%08X\n", status32); |
| 1935 | |
| 1936 | /* synchronize interrupt handling under SMP. this spinlock |
| 1937 | * goes away completely on UP |
| 1938 | */ |
| 1939 | spin_lock (&card->lock); |
| 1940 | |
| 1941 | if (status32 & VIA_INTR_OUT) |
| 1942 | via_intr_channel (card, &card->ch_out); |
| 1943 | if (status32 & VIA_INTR_IN) |
| 1944 | via_intr_channel (card, &card->ch_in); |
| 1945 | if (status32 & VIA_INTR_FM) |
| 1946 | via_intr_channel (card, &card->ch_fm); |
| 1947 | |
| 1948 | spin_unlock (&card->lock); |
| 1949 | |
| 1950 | return IRQ_HANDLED; |
| 1951 | } |
| 1952 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1953 | static irqreturn_t via_new_interrupt(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1954 | { |
| 1955 | struct via_info *card = dev_id; |
| 1956 | u32 status32; |
| 1957 | |
| 1958 | /* to minimize interrupt sharing costs, we use the SGD status |
| 1959 | * shadow register to check the status of all inputs and |
| 1960 | * outputs with a single 32-bit bus read. If no interrupt |
| 1961 | * conditions are flagged, we exit immediately |
| 1962 | */ |
| 1963 | status32 = inl (card->baseaddr + VIA_BASE0_SGD_STATUS_SHADOW); |
| 1964 | if (!(status32 & VIA_NEW_INTR_MASK)) |
| 1965 | return IRQ_NONE; |
| 1966 | /* |
| 1967 | * goes away completely on UP |
| 1968 | */ |
| 1969 | spin_lock (&card->lock); |
| 1970 | |
| 1971 | via_intr_channel (card, &card->ch_out); |
| 1972 | via_intr_channel (card, &card->ch_in); |
| 1973 | via_intr_channel (card, &card->ch_fm); |
| 1974 | |
| 1975 | spin_unlock (&card->lock); |
| 1976 | return IRQ_HANDLED; |
| 1977 | } |
| 1978 | |
| 1979 | |
| 1980 | /** |
| 1981 | * via_interrupt_init - Initialize interrupt handling |
| 1982 | * @card: Private info for specified board |
| 1983 | * |
| 1984 | * Obtain and reserve IRQ for using in handling audio events. |
| 1985 | * Also, disable any IRQ-generating resources, to make sure |
| 1986 | * we don't get interrupts before we want them. |
| 1987 | */ |
| 1988 | |
| 1989 | static int via_interrupt_init (struct via_info *card) |
| 1990 | { |
| 1991 | u8 tmp8; |
| 1992 | |
| 1993 | DPRINTK ("ENTER\n"); |
| 1994 | |
| 1995 | assert (card != NULL); |
| 1996 | assert (card->pdev != NULL); |
| 1997 | |
| 1998 | /* check for sane IRQ number. can this ever happen? */ |
| 1999 | if (card->pdev->irq < 2) { |
| 2000 | printk (KERN_ERR PFX "insane IRQ %d, aborting\n", |
| 2001 | card->pdev->irq); |
| 2002 | DPRINTK ("EXIT, returning -EIO\n"); |
| 2003 | return -EIO; |
| 2004 | } |
| 2005 | |
| 2006 | /* VIA requires this is done */ |
| 2007 | pci_write_config_byte(card->pdev, PCI_INTERRUPT_LINE, card->pdev->irq); |
| 2008 | |
| 2009 | if(card->legacy) |
| 2010 | { |
| 2011 | /* make sure FM irq is not routed to us */ |
| 2012 | pci_read_config_byte (card->pdev, VIA_FM_NMI_CTRL, &tmp8); |
| 2013 | if ((tmp8 & VIA_CR48_FM_TRAP_TO_NMI) == 0) { |
| 2014 | tmp8 |= VIA_CR48_FM_TRAP_TO_NMI; |
| 2015 | pci_write_config_byte (card->pdev, VIA_FM_NMI_CTRL, tmp8); |
| 2016 | } |
Thomas Gleixner | 65ca68b | 2006-07-01 19:29:46 -0700 | [diff] [blame] | 2017 | if (request_irq (card->pdev->irq, via_interrupt, IRQF_SHARED, VIA_MODULE_NAME, card)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2018 | printk (KERN_ERR PFX "unable to obtain IRQ %d, aborting\n", |
| 2019 | card->pdev->irq); |
| 2020 | DPRINTK ("EXIT, returning -EBUSY\n"); |
| 2021 | return -EBUSY; |
| 2022 | } |
| 2023 | } |
| 2024 | else |
| 2025 | { |
Thomas Gleixner | 65ca68b | 2006-07-01 19:29:46 -0700 | [diff] [blame] | 2026 | if (request_irq (card->pdev->irq, via_new_interrupt, IRQF_SHARED, VIA_MODULE_NAME, card)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2027 | printk (KERN_ERR PFX "unable to obtain IRQ %d, aborting\n", |
| 2028 | card->pdev->irq); |
| 2029 | DPRINTK ("EXIT, returning -EBUSY\n"); |
| 2030 | return -EBUSY; |
| 2031 | } |
| 2032 | } |
| 2033 | |
| 2034 | DPRINTK ("EXIT, returning 0\n"); |
| 2035 | return 0; |
| 2036 | } |
| 2037 | |
| 2038 | |
| 2039 | /**************************************************************** |
| 2040 | * |
| 2041 | * OSS DSP device |
| 2042 | * |
| 2043 | */ |
| 2044 | |
Arjan van de Ven | 9c2e08c | 2007-02-12 00:55:37 -0800 | [diff] [blame] | 2045 | static const struct file_operations via_dsp_fops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2046 | .owner = THIS_MODULE, |
| 2047 | .open = via_dsp_open, |
| 2048 | .release = via_dsp_release, |
| 2049 | .read = via_dsp_read, |
| 2050 | .write = via_dsp_write, |
| 2051 | .poll = via_dsp_poll, |
| 2052 | .llseek = no_llseek, |
| 2053 | .ioctl = via_dsp_ioctl, |
| 2054 | .mmap = via_dsp_mmap, |
| 2055 | }; |
| 2056 | |
| 2057 | |
| 2058 | static int __devinit via_dsp_init (struct via_info *card) |
| 2059 | { |
| 2060 | u8 tmp8; |
| 2061 | |
| 2062 | DPRINTK ("ENTER\n"); |
| 2063 | |
| 2064 | assert (card != NULL); |
| 2065 | |
| 2066 | if(card->legacy) |
| 2067 | { |
| 2068 | /* turn off legacy features, if not already */ |
| 2069 | pci_read_config_byte (card->pdev, VIA_FUNC_ENABLE, &tmp8); |
| 2070 | if (tmp8 & (VIA_CR42_SB_ENABLE | VIA_CR42_FM_ENABLE)) { |
| 2071 | tmp8 &= ~(VIA_CR42_SB_ENABLE | VIA_CR42_FM_ENABLE); |
| 2072 | pci_write_config_byte (card->pdev, VIA_FUNC_ENABLE, tmp8); |
| 2073 | } |
| 2074 | } |
| 2075 | |
| 2076 | via_stop_everything (card); |
| 2077 | |
| 2078 | card->dev_dsp = register_sound_dsp (&via_dsp_fops, -1); |
| 2079 | if (card->dev_dsp < 0) { |
| 2080 | DPRINTK ("EXIT, returning -ENODEV\n"); |
| 2081 | return -ENODEV; |
| 2082 | } |
| 2083 | DPRINTK ("EXIT, returning 0\n"); |
| 2084 | return 0; |
| 2085 | } |
| 2086 | |
| 2087 | |
| 2088 | static void via_dsp_cleanup (struct via_info *card) |
| 2089 | { |
| 2090 | DPRINTK ("ENTER\n"); |
| 2091 | |
| 2092 | assert (card != NULL); |
| 2093 | assert (card->dev_dsp >= 0); |
| 2094 | |
| 2095 | via_stop_everything (card); |
| 2096 | |
| 2097 | unregister_sound_dsp (card->dev_dsp); |
| 2098 | |
| 2099 | DPRINTK ("EXIT\n"); |
| 2100 | } |
| 2101 | |
| 2102 | |
| 2103 | static struct page * via_mm_nopage (struct vm_area_struct * vma, |
| 2104 | unsigned long address, int *type) |
| 2105 | { |
| 2106 | struct via_info *card = vma->vm_private_data; |
| 2107 | struct via_channel *chan = &card->ch_out; |
| 2108 | struct page *dmapage; |
| 2109 | unsigned long pgoff; |
| 2110 | int rd, wr; |
| 2111 | |
| 2112 | DPRINTK ("ENTER, start %lXh, ofs %lXh, pgoff %ld, addr %lXh\n", |
| 2113 | vma->vm_start, |
| 2114 | address - vma->vm_start, |
| 2115 | (address - vma->vm_start) >> PAGE_SHIFT, |
| 2116 | address); |
| 2117 | |
| 2118 | if (address > vma->vm_end) { |
| 2119 | DPRINTK ("EXIT, returning NOPAGE_SIGBUS\n"); |
| 2120 | return NOPAGE_SIGBUS; /* Disallow mremap */ |
| 2121 | } |
| 2122 | if (!card) { |
Nick Piggin | cd54e7e | 2006-12-06 20:31:53 -0800 | [diff] [blame] | 2123 | DPRINTK ("EXIT, returning NOPAGE_SIGBUS\n"); |
| 2124 | return NOPAGE_SIGBUS; /* Nothing allocated */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2125 | } |
| 2126 | |
| 2127 | pgoff = vma->vm_pgoff + ((address - vma->vm_start) >> PAGE_SHIFT); |
| 2128 | rd = card->ch_in.is_mapped; |
| 2129 | wr = card->ch_out.is_mapped; |
| 2130 | |
| 2131 | #ifndef VIA_NDEBUG |
| 2132 | { |
| 2133 | unsigned long max_bufs = chan->frag_number; |
| 2134 | if (rd && wr) max_bufs *= 2; |
| 2135 | /* via_dsp_mmap() should ensure this */ |
| 2136 | assert (pgoff < max_bufs); |
| 2137 | } |
| 2138 | #endif |
| 2139 | |
| 2140 | /* if full-duplex (read+write) and we have two sets of bufs, |
| 2141 | * then the playback buffers come first, sez soundcard.c */ |
| 2142 | if (pgoff >= chan->page_number) { |
| 2143 | pgoff -= chan->page_number; |
| 2144 | chan = &card->ch_in; |
| 2145 | } else if (!wr) |
| 2146 | chan = &card->ch_in; |
| 2147 | |
| 2148 | assert ((((unsigned long)chan->pgtbl[pgoff].cpuaddr) % PAGE_SIZE) == 0); |
| 2149 | |
| 2150 | dmapage = virt_to_page (chan->pgtbl[pgoff].cpuaddr); |
| 2151 | DPRINTK ("EXIT, returning page %p for cpuaddr %lXh\n", |
| 2152 | dmapage, (unsigned long) chan->pgtbl[pgoff].cpuaddr); |
| 2153 | get_page (dmapage); |
| 2154 | if (type) |
| 2155 | *type = VM_FAULT_MINOR; |
| 2156 | return dmapage; |
| 2157 | } |
| 2158 | |
| 2159 | |
| 2160 | #ifndef VM_RESERVED |
| 2161 | static int via_mm_swapout (struct page *page, struct file *filp) |
| 2162 | { |
| 2163 | return 0; |
| 2164 | } |
| 2165 | #endif /* VM_RESERVED */ |
| 2166 | |
| 2167 | |
| 2168 | static struct vm_operations_struct via_mm_ops = { |
| 2169 | .nopage = via_mm_nopage, |
| 2170 | |
| 2171 | #ifndef VM_RESERVED |
| 2172 | .swapout = via_mm_swapout, |
| 2173 | #endif |
| 2174 | }; |
| 2175 | |
| 2176 | |
| 2177 | static int via_dsp_mmap(struct file *file, struct vm_area_struct *vma) |
| 2178 | { |
| 2179 | struct via_info *card; |
| 2180 | int nonblock = (file->f_flags & O_NONBLOCK); |
| 2181 | int rc = -EINVAL, rd=0, wr=0; |
| 2182 | unsigned long max_size, size, start, offset; |
| 2183 | |
| 2184 | assert (file != NULL); |
| 2185 | assert (vma != NULL); |
| 2186 | card = file->private_data; |
| 2187 | assert (card != NULL); |
| 2188 | |
| 2189 | DPRINTK ("ENTER, start %lXh, size %ld, pgoff %ld\n", |
| 2190 | vma->vm_start, |
| 2191 | vma->vm_end - vma->vm_start, |
| 2192 | vma->vm_pgoff); |
| 2193 | |
| 2194 | max_size = 0; |
| 2195 | if (vma->vm_flags & VM_READ) { |
| 2196 | rd = 1; |
| 2197 | via_chan_set_buffering(card, &card->ch_in, -1); |
| 2198 | via_chan_buffer_init (card, &card->ch_in); |
| 2199 | max_size += card->ch_in.page_number << PAGE_SHIFT; |
| 2200 | } |
| 2201 | if (vma->vm_flags & VM_WRITE) { |
| 2202 | wr = 1; |
| 2203 | via_chan_set_buffering(card, &card->ch_out, -1); |
| 2204 | via_chan_buffer_init (card, &card->ch_out); |
| 2205 | max_size += card->ch_out.page_number << PAGE_SHIFT; |
| 2206 | } |
| 2207 | |
| 2208 | start = vma->vm_start; |
| 2209 | offset = (vma->vm_pgoff << PAGE_SHIFT); |
| 2210 | size = vma->vm_end - vma->vm_start; |
| 2211 | |
| 2212 | /* some basic size/offset sanity checks */ |
| 2213 | if (size > max_size) |
| 2214 | goto out; |
| 2215 | if (offset > max_size - size) |
| 2216 | goto out; |
| 2217 | |
| 2218 | rc = via_syscall_down (card, nonblock); |
| 2219 | if (rc) goto out; |
| 2220 | |
| 2221 | vma->vm_ops = &via_mm_ops; |
| 2222 | vma->vm_private_data = card; |
| 2223 | |
| 2224 | #ifdef VM_RESERVED |
| 2225 | vma->vm_flags |= VM_RESERVED; |
| 2226 | #endif |
| 2227 | |
| 2228 | if (rd) |
| 2229 | card->ch_in.is_mapped = 1; |
| 2230 | if (wr) |
| 2231 | card->ch_out.is_mapped = 1; |
| 2232 | |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 2233 | mutex_unlock(&card->syscall_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2234 | rc = 0; |
| 2235 | |
| 2236 | out: |
| 2237 | DPRINTK ("EXIT, returning %d\n", rc); |
| 2238 | return rc; |
| 2239 | } |
| 2240 | |
| 2241 | |
| 2242 | static ssize_t via_dsp_do_read (struct via_info *card, |
| 2243 | char __user *userbuf, size_t count, |
| 2244 | int nonblock) |
| 2245 | { |
| 2246 | DECLARE_WAITQUEUE(wait, current); |
| 2247 | const char __user *orig_userbuf = userbuf; |
| 2248 | struct via_channel *chan = &card->ch_in; |
| 2249 | size_t size; |
| 2250 | int n, tmp; |
| 2251 | ssize_t ret = 0; |
| 2252 | |
| 2253 | /* if SGD has not yet been started, start it */ |
| 2254 | via_chan_maybe_start (chan); |
| 2255 | |
| 2256 | handle_one_block: |
| 2257 | /* just to be a nice neighbor */ |
| 2258 | /* Thomas Sailer: |
| 2259 | * But also to ourselves, release semaphore if we do so */ |
| 2260 | if (need_resched()) { |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 2261 | mutex_unlock(&card->syscall_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2262 | schedule (); |
| 2263 | ret = via_syscall_down (card, nonblock); |
| 2264 | if (ret) |
| 2265 | goto out; |
| 2266 | } |
| 2267 | |
| 2268 | /* grab current channel software pointer. In the case of |
| 2269 | * recording, this is pointing to the next buffer that |
| 2270 | * will receive data from the audio hardware. |
| 2271 | */ |
| 2272 | n = chan->sw_ptr; |
| 2273 | |
| 2274 | /* n_frags represents the number of fragments waiting |
| 2275 | * to be copied to userland. sleep until at least |
| 2276 | * one buffer has been read from the audio hardware. |
| 2277 | */ |
| 2278 | add_wait_queue(&chan->wait, &wait); |
| 2279 | for (;;) { |
| 2280 | __set_current_state(TASK_INTERRUPTIBLE); |
| 2281 | tmp = atomic_read (&chan->n_frags); |
| 2282 | assert (tmp >= 0); |
| 2283 | assert (tmp <= chan->frag_number); |
| 2284 | if (tmp) |
| 2285 | break; |
| 2286 | if (nonblock || !chan->is_active) { |
| 2287 | ret = -EAGAIN; |
| 2288 | break; |
| 2289 | } |
| 2290 | |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 2291 | mutex_unlock(&card->syscall_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2292 | |
| 2293 | DPRINTK ("Sleeping on block %d\n", n); |
| 2294 | schedule(); |
| 2295 | |
| 2296 | ret = via_syscall_down (card, nonblock); |
| 2297 | if (ret) |
| 2298 | break; |
| 2299 | |
| 2300 | if (signal_pending (current)) { |
| 2301 | ret = -ERESTARTSYS; |
| 2302 | break; |
| 2303 | } |
| 2304 | } |
| 2305 | set_current_state(TASK_RUNNING); |
| 2306 | remove_wait_queue(&chan->wait, &wait); |
| 2307 | if (ret) |
| 2308 | goto out; |
| 2309 | |
| 2310 | /* Now that we have a buffer we can read from, send |
| 2311 | * as much as sample data possible to userspace. |
| 2312 | */ |
| 2313 | while ((count > 0) && (chan->slop_len < chan->frag_size)) { |
| 2314 | size_t slop_left = chan->frag_size - chan->slop_len; |
| 2315 | void *base = chan->pgtbl[n / (PAGE_SIZE / chan->frag_size)].cpuaddr; |
| 2316 | unsigned ofs = (n % (PAGE_SIZE / chan->frag_size)) * chan->frag_size; |
| 2317 | |
| 2318 | size = (count < slop_left) ? count : slop_left; |
| 2319 | if (copy_to_user (userbuf, |
| 2320 | base + ofs + chan->slop_len, |
| 2321 | size)) { |
| 2322 | ret = -EFAULT; |
| 2323 | goto out; |
| 2324 | } |
| 2325 | |
| 2326 | count -= size; |
| 2327 | chan->slop_len += size; |
| 2328 | userbuf += size; |
| 2329 | } |
| 2330 | |
| 2331 | /* If we didn't copy the buffer completely to userspace, |
| 2332 | * stop now. |
| 2333 | */ |
| 2334 | if (chan->slop_len < chan->frag_size) |
| 2335 | goto out; |
| 2336 | |
| 2337 | /* |
| 2338 | * If we get to this point, we copied one buffer completely |
| 2339 | * to userspace, give the buffer back to the hardware. |
| 2340 | */ |
| 2341 | |
| 2342 | /* advance channel software pointer to point to |
| 2343 | * the next buffer from which we will copy |
| 2344 | */ |
| 2345 | if (chan->sw_ptr == (chan->frag_number - 1)) |
| 2346 | chan->sw_ptr = 0; |
| 2347 | else |
| 2348 | chan->sw_ptr++; |
| 2349 | |
| 2350 | /* mark one less buffer waiting to be processed */ |
| 2351 | assert (atomic_read (&chan->n_frags) > 0); |
| 2352 | atomic_dec (&chan->n_frags); |
| 2353 | |
| 2354 | /* we are at a block boundary, there is no fragment data */ |
| 2355 | chan->slop_len = 0; |
| 2356 | |
| 2357 | DPRINTK ("Flushed block %u, sw_ptr now %u, n_frags now %d\n", |
| 2358 | n, chan->sw_ptr, atomic_read (&chan->n_frags)); |
| 2359 | |
| 2360 | DPRINTK ("regs==%02X %02X %02X %08X %08X %08X %08X\n", |
| 2361 | inb (card->baseaddr + 0x00), |
| 2362 | inb (card->baseaddr + 0x01), |
| 2363 | inb (card->baseaddr + 0x02), |
| 2364 | inl (card->baseaddr + 0x04), |
| 2365 | inl (card->baseaddr + 0x0C), |
| 2366 | inl (card->baseaddr + 0x80), |
| 2367 | inl (card->baseaddr + 0x84)); |
| 2368 | |
| 2369 | if (count > 0) |
| 2370 | goto handle_one_block; |
| 2371 | |
| 2372 | out: |
| 2373 | return (userbuf != orig_userbuf) ? (userbuf - orig_userbuf) : ret; |
| 2374 | } |
| 2375 | |
| 2376 | |
| 2377 | static ssize_t via_dsp_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos) |
| 2378 | { |
| 2379 | struct via_info *card; |
| 2380 | int nonblock = (file->f_flags & O_NONBLOCK); |
| 2381 | int rc; |
| 2382 | |
| 2383 | DPRINTK ("ENTER, file=%p, buffer=%p, count=%u, ppos=%lu\n", |
| 2384 | file, buffer, count, ppos ? ((unsigned long)*ppos) : 0); |
| 2385 | |
| 2386 | assert (file != NULL); |
| 2387 | card = file->private_data; |
| 2388 | assert (card != NULL); |
| 2389 | |
| 2390 | rc = via_syscall_down (card, nonblock); |
| 2391 | if (rc) goto out; |
| 2392 | |
| 2393 | if (card->ch_in.is_mapped) { |
| 2394 | rc = -ENXIO; |
| 2395 | goto out_up; |
| 2396 | } |
| 2397 | |
| 2398 | via_chan_set_buffering(card, &card->ch_in, -1); |
| 2399 | rc = via_chan_buffer_init (card, &card->ch_in); |
| 2400 | |
| 2401 | if (rc) |
| 2402 | goto out_up; |
| 2403 | |
| 2404 | rc = via_dsp_do_read (card, buffer, count, nonblock); |
| 2405 | |
| 2406 | out_up: |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 2407 | mutex_unlock(&card->syscall_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2408 | out: |
| 2409 | DPRINTK ("EXIT, returning %ld\n",(long) rc); |
| 2410 | return rc; |
| 2411 | } |
| 2412 | |
| 2413 | |
| 2414 | static ssize_t via_dsp_do_write (struct via_info *card, |
| 2415 | const char __user *userbuf, size_t count, |
| 2416 | int nonblock) |
| 2417 | { |
| 2418 | DECLARE_WAITQUEUE(wait, current); |
| 2419 | const char __user *orig_userbuf = userbuf; |
| 2420 | struct via_channel *chan = &card->ch_out; |
| 2421 | volatile struct via_sgd_table *sgtable = chan->sgtable; |
| 2422 | size_t size; |
| 2423 | int n, tmp; |
| 2424 | ssize_t ret = 0; |
| 2425 | |
| 2426 | handle_one_block: |
| 2427 | /* just to be a nice neighbor */ |
| 2428 | /* Thomas Sailer: |
| 2429 | * But also to ourselves, release semaphore if we do so */ |
| 2430 | if (need_resched()) { |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 2431 | mutex_unlock(&card->syscall_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2432 | schedule (); |
| 2433 | ret = via_syscall_down (card, nonblock); |
| 2434 | if (ret) |
| 2435 | goto out; |
| 2436 | } |
| 2437 | |
| 2438 | /* grab current channel fragment pointer. In the case of |
| 2439 | * playback, this is pointing to the next fragment that |
| 2440 | * should receive data from userland. |
| 2441 | */ |
| 2442 | n = chan->sw_ptr; |
| 2443 | |
| 2444 | /* n_frags represents the number of fragments remaining |
| 2445 | * to be filled by userspace. Sleep until |
| 2446 | * at least one fragment is available for our use. |
| 2447 | */ |
| 2448 | add_wait_queue(&chan->wait, &wait); |
| 2449 | for (;;) { |
| 2450 | __set_current_state(TASK_INTERRUPTIBLE); |
| 2451 | tmp = atomic_read (&chan->n_frags); |
| 2452 | assert (tmp >= 0); |
| 2453 | assert (tmp <= chan->frag_number); |
| 2454 | if (tmp) |
| 2455 | break; |
| 2456 | if (nonblock || !chan->is_active) { |
| 2457 | ret = -EAGAIN; |
| 2458 | break; |
| 2459 | } |
| 2460 | |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 2461 | mutex_unlock(&card->syscall_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2462 | |
| 2463 | DPRINTK ("Sleeping on page %d, tmp==%d, ir==%d\n", n, tmp, chan->is_record); |
| 2464 | schedule(); |
| 2465 | |
| 2466 | ret = via_syscall_down (card, nonblock); |
| 2467 | if (ret) |
| 2468 | break; |
| 2469 | |
| 2470 | if (signal_pending (current)) { |
| 2471 | ret = -ERESTARTSYS; |
| 2472 | break; |
| 2473 | } |
| 2474 | } |
| 2475 | set_current_state(TASK_RUNNING); |
| 2476 | remove_wait_queue(&chan->wait, &wait); |
| 2477 | if (ret) |
| 2478 | goto out; |
| 2479 | |
| 2480 | /* Now that we have at least one fragment we can write to, fill the buffer |
| 2481 | * as much as possible with data from userspace. |
| 2482 | */ |
| 2483 | while ((count > 0) && (chan->slop_len < chan->frag_size)) { |
| 2484 | size_t slop_left = chan->frag_size - chan->slop_len; |
| 2485 | |
| 2486 | size = (count < slop_left) ? count : slop_left; |
| 2487 | if (copy_from_user (chan->pgtbl[n / (PAGE_SIZE / chan->frag_size)].cpuaddr + (n % (PAGE_SIZE / chan->frag_size)) * chan->frag_size + chan->slop_len, |
| 2488 | userbuf, size)) { |
| 2489 | ret = -EFAULT; |
| 2490 | goto out; |
| 2491 | } |
| 2492 | |
| 2493 | count -= size; |
| 2494 | chan->slop_len += size; |
| 2495 | userbuf += size; |
| 2496 | } |
| 2497 | |
| 2498 | /* If we didn't fill up the buffer with data, stop now. |
| 2499 | * Put a 'stop' marker in the DMA table too, to tell the |
| 2500 | * audio hardware to stop if it gets here. |
| 2501 | */ |
| 2502 | if (chan->slop_len < chan->frag_size) { |
| 2503 | sgtable[n].count = cpu_to_le32 (chan->slop_len | VIA_EOL | VIA_STOP); |
| 2504 | goto out; |
| 2505 | } |
| 2506 | |
| 2507 | /* |
| 2508 | * If we get to this point, we have filled a buffer with |
| 2509 | * audio data, flush the buffer to audio hardware. |
| 2510 | */ |
| 2511 | |
| 2512 | /* Record the true size for the audio hardware to notice */ |
| 2513 | if (n == (chan->frag_number - 1)) |
| 2514 | sgtable[n].count = cpu_to_le32 (chan->frag_size | VIA_EOL); |
| 2515 | else |
| 2516 | sgtable[n].count = cpu_to_le32 (chan->frag_size | VIA_FLAG); |
| 2517 | |
| 2518 | /* advance channel software pointer to point to |
| 2519 | * the next buffer we will fill with data |
| 2520 | */ |
| 2521 | if (chan->sw_ptr == (chan->frag_number - 1)) |
| 2522 | chan->sw_ptr = 0; |
| 2523 | else |
| 2524 | chan->sw_ptr++; |
| 2525 | |
| 2526 | /* mark one less buffer as being available for userspace consumption */ |
| 2527 | assert (atomic_read (&chan->n_frags) > 0); |
| 2528 | atomic_dec (&chan->n_frags); |
| 2529 | |
| 2530 | /* we are at a block boundary, there is no fragment data */ |
| 2531 | chan->slop_len = 0; |
| 2532 | |
| 2533 | /* if SGD has not yet been started, start it */ |
| 2534 | via_chan_maybe_start (chan); |
| 2535 | |
| 2536 | DPRINTK ("Flushed block %u, sw_ptr now %u, n_frags now %d\n", |
| 2537 | n, chan->sw_ptr, atomic_read (&chan->n_frags)); |
| 2538 | |
| 2539 | DPRINTK ("regs==S=%02X C=%02X TP=%02X BP=%08X RT=%08X SG=%08X CC=%08X SS=%08X\n", |
| 2540 | inb (card->baseaddr + 0x00), |
| 2541 | inb (card->baseaddr + 0x01), |
| 2542 | inb (card->baseaddr + 0x02), |
| 2543 | inl (card->baseaddr + 0x04), |
| 2544 | inl (card->baseaddr + 0x08), |
| 2545 | inl (card->baseaddr + 0x0C), |
| 2546 | inl (card->baseaddr + 0x80), |
| 2547 | inl (card->baseaddr + 0x84)); |
| 2548 | |
| 2549 | if (count > 0) |
| 2550 | goto handle_one_block; |
| 2551 | |
| 2552 | out: |
| 2553 | if (userbuf - orig_userbuf) |
| 2554 | return userbuf - orig_userbuf; |
| 2555 | else |
| 2556 | return ret; |
| 2557 | } |
| 2558 | |
| 2559 | |
| 2560 | static ssize_t via_dsp_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos) |
| 2561 | { |
| 2562 | struct via_info *card; |
| 2563 | ssize_t rc; |
| 2564 | int nonblock = (file->f_flags & O_NONBLOCK); |
| 2565 | |
| 2566 | DPRINTK ("ENTER, file=%p, buffer=%p, count=%u, ppos=%lu\n", |
| 2567 | file, buffer, count, ppos ? ((unsigned long)*ppos) : 0); |
| 2568 | |
| 2569 | assert (file != NULL); |
| 2570 | card = file->private_data; |
| 2571 | assert (card != NULL); |
| 2572 | |
| 2573 | rc = via_syscall_down (card, nonblock); |
| 2574 | if (rc) goto out; |
| 2575 | |
| 2576 | if (card->ch_out.is_mapped) { |
| 2577 | rc = -ENXIO; |
| 2578 | goto out_up; |
| 2579 | } |
| 2580 | |
| 2581 | via_chan_set_buffering(card, &card->ch_out, -1); |
| 2582 | rc = via_chan_buffer_init (card, &card->ch_out); |
| 2583 | |
| 2584 | if (rc) |
| 2585 | goto out_up; |
| 2586 | |
| 2587 | rc = via_dsp_do_write (card, buffer, count, nonblock); |
| 2588 | |
| 2589 | out_up: |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 2590 | mutex_unlock(&card->syscall_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2591 | out: |
| 2592 | DPRINTK ("EXIT, returning %ld\n",(long) rc); |
| 2593 | return rc; |
| 2594 | } |
| 2595 | |
| 2596 | |
| 2597 | static unsigned int via_dsp_poll(struct file *file, struct poll_table_struct *wait) |
| 2598 | { |
| 2599 | struct via_info *card; |
| 2600 | struct via_channel *chan; |
| 2601 | unsigned int mask = 0; |
| 2602 | |
| 2603 | DPRINTK ("ENTER\n"); |
| 2604 | |
| 2605 | assert (file != NULL); |
| 2606 | card = file->private_data; |
| 2607 | assert (card != NULL); |
| 2608 | |
| 2609 | if (file->f_mode & FMODE_READ) { |
| 2610 | chan = &card->ch_in; |
| 2611 | if (sg_active (chan->iobase)) |
| 2612 | poll_wait(file, &chan->wait, wait); |
| 2613 | if (atomic_read (&chan->n_frags) > 0) |
| 2614 | mask |= POLLIN | POLLRDNORM; |
| 2615 | } |
| 2616 | |
| 2617 | if (file->f_mode & FMODE_WRITE) { |
| 2618 | chan = &card->ch_out; |
| 2619 | if (sg_active (chan->iobase)) |
| 2620 | poll_wait(file, &chan->wait, wait); |
| 2621 | if (atomic_read (&chan->n_frags) > 0) |
| 2622 | mask |= POLLOUT | POLLWRNORM; |
| 2623 | } |
| 2624 | |
| 2625 | DPRINTK ("EXIT, returning %u\n", mask); |
| 2626 | return mask; |
| 2627 | } |
| 2628 | |
| 2629 | |
| 2630 | /** |
| 2631 | * via_dsp_drain_playback - sleep until all playback samples are flushed |
| 2632 | * @card: Private info for specified board |
| 2633 | * @chan: Channel to drain |
| 2634 | * @nonblock: boolean, non-zero if O_NONBLOCK is set |
| 2635 | * |
| 2636 | * Sleeps until all playback has been flushed to the audio |
| 2637 | * hardware. |
| 2638 | * |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 2639 | * Locking: inside card->syscall_mutex |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2640 | */ |
| 2641 | |
| 2642 | static int via_dsp_drain_playback (struct via_info *card, |
| 2643 | struct via_channel *chan, int nonblock) |
| 2644 | { |
| 2645 | DECLARE_WAITQUEUE(wait, current); |
| 2646 | int ret = 0; |
| 2647 | |
| 2648 | DPRINTK ("ENTER, nonblock = %d\n", nonblock); |
| 2649 | |
| 2650 | if (chan->slop_len > 0) |
| 2651 | via_chan_flush_frag (chan); |
| 2652 | |
| 2653 | if (atomic_read (&chan->n_frags) == chan->frag_number) |
| 2654 | goto out; |
| 2655 | |
| 2656 | via_chan_maybe_start (chan); |
| 2657 | |
| 2658 | add_wait_queue(&chan->wait, &wait); |
| 2659 | for (;;) { |
| 2660 | DPRINTK ("FRAGS %d FRAGNUM %d\n", atomic_read(&chan->n_frags), chan->frag_number); |
| 2661 | __set_current_state(TASK_INTERRUPTIBLE); |
| 2662 | if (atomic_read (&chan->n_frags) >= chan->frag_number) |
| 2663 | break; |
| 2664 | |
| 2665 | if (nonblock) { |
| 2666 | DPRINTK ("EXIT, returning -EAGAIN\n"); |
| 2667 | ret = -EAGAIN; |
| 2668 | break; |
| 2669 | } |
| 2670 | |
| 2671 | #ifdef VIA_DEBUG |
| 2672 | { |
| 2673 | u8 r40,r41,r42,r43,r44,r48; |
| 2674 | pci_read_config_byte (card->pdev, 0x40, &r40); |
| 2675 | pci_read_config_byte (card->pdev, 0x41, &r41); |
| 2676 | pci_read_config_byte (card->pdev, 0x42, &r42); |
| 2677 | pci_read_config_byte (card->pdev, 0x43, &r43); |
| 2678 | pci_read_config_byte (card->pdev, 0x44, &r44); |
| 2679 | pci_read_config_byte (card->pdev, 0x48, &r48); |
| 2680 | DPRINTK ("PCI config: %02X %02X %02X %02X %02X %02X\n", |
| 2681 | r40,r41,r42,r43,r44,r48); |
| 2682 | |
| 2683 | DPRINTK ("regs==%02X %02X %02X %08X %08X %08X %08X\n", |
| 2684 | inb (card->baseaddr + 0x00), |
| 2685 | inb (card->baseaddr + 0x01), |
| 2686 | inb (card->baseaddr + 0x02), |
| 2687 | inl (card->baseaddr + 0x04), |
| 2688 | inl (card->baseaddr + 0x0C), |
| 2689 | inl (card->baseaddr + 0x80), |
| 2690 | inl (card->baseaddr + 0x84)); |
| 2691 | } |
| 2692 | |
| 2693 | if (!chan->is_active) |
| 2694 | printk (KERN_ERR "sleeping but not active\n"); |
| 2695 | #endif |
| 2696 | |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 2697 | mutex_unlock(&card->syscall_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2698 | |
| 2699 | DPRINTK ("sleeping, nbufs=%d\n", atomic_read (&chan->n_frags)); |
| 2700 | schedule(); |
| 2701 | |
| 2702 | if ((ret = via_syscall_down (card, nonblock))) |
| 2703 | break; |
| 2704 | |
| 2705 | if (signal_pending (current)) { |
| 2706 | DPRINTK ("EXIT, returning -ERESTARTSYS\n"); |
| 2707 | ret = -ERESTARTSYS; |
| 2708 | break; |
| 2709 | } |
| 2710 | } |
| 2711 | set_current_state(TASK_RUNNING); |
| 2712 | remove_wait_queue(&chan->wait, &wait); |
| 2713 | |
| 2714 | #ifdef VIA_DEBUG |
| 2715 | { |
| 2716 | u8 r40,r41,r42,r43,r44,r48; |
| 2717 | pci_read_config_byte (card->pdev, 0x40, &r40); |
| 2718 | pci_read_config_byte (card->pdev, 0x41, &r41); |
| 2719 | pci_read_config_byte (card->pdev, 0x42, &r42); |
| 2720 | pci_read_config_byte (card->pdev, 0x43, &r43); |
| 2721 | pci_read_config_byte (card->pdev, 0x44, &r44); |
| 2722 | pci_read_config_byte (card->pdev, 0x48, &r48); |
| 2723 | DPRINTK ("PCI config: %02X %02X %02X %02X %02X %02X\n", |
| 2724 | r40,r41,r42,r43,r44,r48); |
| 2725 | |
| 2726 | DPRINTK ("regs==%02X %02X %02X %08X %08X %08X %08X\n", |
| 2727 | inb (card->baseaddr + 0x00), |
| 2728 | inb (card->baseaddr + 0x01), |
| 2729 | inb (card->baseaddr + 0x02), |
| 2730 | inl (card->baseaddr + 0x04), |
| 2731 | inl (card->baseaddr + 0x0C), |
| 2732 | inl (card->baseaddr + 0x80), |
| 2733 | inl (card->baseaddr + 0x84)); |
| 2734 | |
| 2735 | DPRINTK ("final nbufs=%d\n", atomic_read (&chan->n_frags)); |
| 2736 | } |
| 2737 | #endif |
| 2738 | |
| 2739 | out: |
| 2740 | DPRINTK ("EXIT, returning %d\n", ret); |
| 2741 | return ret; |
| 2742 | } |
| 2743 | |
| 2744 | |
| 2745 | /** |
| 2746 | * via_dsp_ioctl_space - get information about channel buffering |
| 2747 | * @card: Private info for specified board |
| 2748 | * @chan: pointer to channel-specific info |
| 2749 | * @arg: user buffer for returned information |
| 2750 | * |
| 2751 | * Handles SNDCTL_DSP_GETISPACE and SNDCTL_DSP_GETOSPACE. |
| 2752 | * |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 2753 | * Locking: inside card->syscall_mutex |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2754 | */ |
| 2755 | |
| 2756 | static int via_dsp_ioctl_space (struct via_info *card, |
| 2757 | struct via_channel *chan, |
| 2758 | void __user *arg) |
| 2759 | { |
| 2760 | audio_buf_info info; |
| 2761 | |
| 2762 | via_chan_set_buffering(card, chan, -1); |
| 2763 | |
| 2764 | info.fragstotal = chan->frag_number; |
| 2765 | info.fragsize = chan->frag_size; |
| 2766 | |
| 2767 | /* number of full fragments we can read/write without blocking */ |
| 2768 | info.fragments = atomic_read (&chan->n_frags); |
| 2769 | |
| 2770 | if ((chan->slop_len % chan->frag_size > 0) && (info.fragments > 0)) |
| 2771 | info.fragments--; |
| 2772 | |
| 2773 | /* number of bytes that can be read or written immediately |
| 2774 | * without blocking. |
| 2775 | */ |
| 2776 | info.bytes = (info.fragments * chan->frag_size); |
| 2777 | if (chan->slop_len % chan->frag_size > 0) |
| 2778 | info.bytes += chan->frag_size - (chan->slop_len % chan->frag_size); |
| 2779 | |
| 2780 | DPRINTK ("EXIT, returning fragstotal=%d, fragsize=%d, fragments=%d, bytes=%d\n", |
| 2781 | info.fragstotal, |
| 2782 | info.fragsize, |
| 2783 | info.fragments, |
| 2784 | info.bytes); |
| 2785 | |
| 2786 | return copy_to_user (arg, &info, sizeof (info))?-EFAULT:0; |
| 2787 | } |
| 2788 | |
| 2789 | |
| 2790 | /** |
| 2791 | * via_dsp_ioctl_ptr - get information about hardware buffer ptr |
| 2792 | * @card: Private info for specified board |
| 2793 | * @chan: pointer to channel-specific info |
| 2794 | * @arg: user buffer for returned information |
| 2795 | * |
| 2796 | * Handles SNDCTL_DSP_GETIPTR and SNDCTL_DSP_GETOPTR. |
| 2797 | * |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 2798 | * Locking: inside card->syscall_mutex |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2799 | */ |
| 2800 | |
| 2801 | static int via_dsp_ioctl_ptr (struct via_info *card, |
| 2802 | struct via_channel *chan, |
| 2803 | void __user *arg) |
| 2804 | { |
| 2805 | count_info info; |
| 2806 | |
| 2807 | spin_lock_irq (&card->lock); |
| 2808 | |
| 2809 | info.bytes = chan->bytes; |
| 2810 | info.blocks = chan->n_irqs; |
| 2811 | chan->n_irqs = 0; |
| 2812 | |
| 2813 | spin_unlock_irq (&card->lock); |
| 2814 | |
| 2815 | if (chan->is_active) { |
| 2816 | unsigned long extra; |
| 2817 | info.ptr = atomic_read (&chan->hw_ptr) * chan->frag_size; |
| 2818 | extra = chan->frag_size - via_sg_offset(chan); |
| 2819 | info.ptr += extra; |
| 2820 | info.bytes += extra; |
| 2821 | } else { |
| 2822 | info.ptr = 0; |
| 2823 | } |
| 2824 | |
| 2825 | DPRINTK ("EXIT, returning bytes=%d, blocks=%d, ptr=%d\n", |
| 2826 | info.bytes, |
| 2827 | info.blocks, |
| 2828 | info.ptr); |
| 2829 | |
| 2830 | return copy_to_user (arg, &info, sizeof (info))?-EFAULT:0; |
| 2831 | } |
| 2832 | |
| 2833 | |
| 2834 | static int via_dsp_ioctl_trigger (struct via_channel *chan, int val) |
| 2835 | { |
| 2836 | int enable, do_something; |
| 2837 | |
| 2838 | if (chan->is_record) |
| 2839 | enable = (val & PCM_ENABLE_INPUT); |
| 2840 | else |
| 2841 | enable = (val & PCM_ENABLE_OUTPUT); |
| 2842 | |
| 2843 | if (!chan->is_enabled && enable) { |
| 2844 | do_something = 1; |
| 2845 | } else if (chan->is_enabled && !enable) { |
| 2846 | do_something = -1; |
| 2847 | } else { |
| 2848 | do_something = 0; |
| 2849 | } |
| 2850 | |
| 2851 | DPRINTK ("enable=%d, do_something=%d\n", |
| 2852 | enable, do_something); |
| 2853 | |
| 2854 | if (chan->is_active && do_something) |
| 2855 | return -EINVAL; |
| 2856 | |
| 2857 | if (do_something == 1) { |
| 2858 | chan->is_enabled = 1; |
| 2859 | via_chan_maybe_start (chan); |
| 2860 | DPRINTK ("Triggering input\n"); |
| 2861 | } |
| 2862 | |
| 2863 | else if (do_something == -1) { |
| 2864 | chan->is_enabled = 0; |
| 2865 | DPRINTK ("Setup input trigger\n"); |
| 2866 | } |
| 2867 | |
| 2868 | return 0; |
| 2869 | } |
| 2870 | |
| 2871 | |
| 2872 | static int via_dsp_ioctl (struct inode *inode, struct file *file, |
| 2873 | unsigned int cmd, unsigned long arg) |
| 2874 | { |
| 2875 | int rc, rd=0, wr=0, val=0; |
| 2876 | struct via_info *card; |
| 2877 | struct via_channel *chan; |
| 2878 | int nonblock = (file->f_flags & O_NONBLOCK); |
| 2879 | int __user *ip = (int __user *)arg; |
| 2880 | void __user *p = (void __user *)arg; |
| 2881 | |
| 2882 | assert (file != NULL); |
| 2883 | card = file->private_data; |
| 2884 | assert (card != NULL); |
| 2885 | |
| 2886 | if (file->f_mode & FMODE_WRITE) |
| 2887 | wr = 1; |
| 2888 | if (file->f_mode & FMODE_READ) |
| 2889 | rd = 1; |
| 2890 | |
| 2891 | rc = via_syscall_down (card, nonblock); |
| 2892 | if (rc) |
| 2893 | return rc; |
| 2894 | rc = -EINVAL; |
| 2895 | |
| 2896 | switch (cmd) { |
| 2897 | |
| 2898 | /* OSS API version. XXX unverified */ |
| 2899 | case OSS_GETVERSION: |
| 2900 | DPRINTK ("ioctl OSS_GETVERSION, EXIT, returning SOUND_VERSION\n"); |
| 2901 | rc = put_user (SOUND_VERSION, ip); |
| 2902 | break; |
| 2903 | |
| 2904 | /* list of supported PCM data formats */ |
| 2905 | case SNDCTL_DSP_GETFMTS: |
| 2906 | DPRINTK ("DSP_GETFMTS, EXIT, returning AFMT U8|S16_LE\n"); |
| 2907 | rc = put_user (AFMT_U8 | AFMT_S16_LE, ip); |
| 2908 | break; |
| 2909 | |
| 2910 | /* query or set current channel's PCM data format */ |
| 2911 | case SNDCTL_DSP_SETFMT: |
| 2912 | if (get_user(val, ip)) { |
| 2913 | rc = -EFAULT; |
| 2914 | break; |
| 2915 | } |
| 2916 | DPRINTK ("DSP_SETFMT, val==%d\n", val); |
| 2917 | if (val != AFMT_QUERY) { |
| 2918 | rc = 0; |
| 2919 | |
| 2920 | if (rd) |
| 2921 | rc = via_chan_set_fmt (card, &card->ch_in, val); |
| 2922 | |
| 2923 | if (rc >= 0 && wr) |
| 2924 | rc = via_chan_set_fmt (card, &card->ch_out, val); |
| 2925 | |
| 2926 | if (rc < 0) |
| 2927 | break; |
| 2928 | |
| 2929 | val = rc; |
| 2930 | } else { |
| 2931 | if ((rd && (card->ch_in.pcm_fmt & VIA_PCM_FMT_16BIT)) || |
| 2932 | (wr && (card->ch_out.pcm_fmt & VIA_PCM_FMT_16BIT))) |
| 2933 | val = AFMT_S16_LE; |
| 2934 | else |
| 2935 | val = AFMT_U8; |
| 2936 | } |
| 2937 | DPRINTK ("SETFMT EXIT, returning %d\n", val); |
| 2938 | rc = put_user (val, ip); |
| 2939 | break; |
| 2940 | |
| 2941 | /* query or set number of channels (1=mono, 2=stereo, 4/6 for multichannel) */ |
| 2942 | case SNDCTL_DSP_CHANNELS: |
| 2943 | if (get_user(val, ip)) { |
| 2944 | rc = -EFAULT; |
| 2945 | break; |
| 2946 | } |
| 2947 | DPRINTK ("DSP_CHANNELS, val==%d\n", val); |
| 2948 | if (val != 0) { |
| 2949 | rc = 0; |
| 2950 | |
| 2951 | if (rd) |
| 2952 | rc = via_chan_set_stereo (card, &card->ch_in, val); |
| 2953 | |
| 2954 | if (rc >= 0 && wr) |
| 2955 | rc = via_chan_set_stereo (card, &card->ch_out, val); |
| 2956 | |
| 2957 | if (rc < 0) |
| 2958 | break; |
| 2959 | |
| 2960 | val = rc; |
| 2961 | } else { |
| 2962 | if (rd) |
| 2963 | val = card->ch_in.channels; |
| 2964 | else |
| 2965 | val = card->ch_out.channels; |
| 2966 | } |
| 2967 | DPRINTK ("CHANNELS EXIT, returning %d\n", val); |
| 2968 | rc = put_user (val, ip); |
| 2969 | break; |
| 2970 | |
| 2971 | /* enable (val is not zero) or disable (val == 0) stereo */ |
| 2972 | case SNDCTL_DSP_STEREO: |
| 2973 | if (get_user(val, ip)) { |
| 2974 | rc = -EFAULT; |
| 2975 | break; |
| 2976 | } |
| 2977 | DPRINTK ("DSP_STEREO, val==%d\n", val); |
| 2978 | rc = 0; |
| 2979 | |
| 2980 | if (rd) |
| 2981 | rc = via_chan_set_stereo (card, &card->ch_in, val ? 2 : 1); |
| 2982 | if (rc >= 0 && wr) |
| 2983 | rc = via_chan_set_stereo (card, &card->ch_out, val ? 2 : 1); |
| 2984 | |
| 2985 | if (rc < 0) |
| 2986 | break; |
| 2987 | |
| 2988 | val = rc - 1; |
| 2989 | |
| 2990 | DPRINTK ("STEREO EXIT, returning %d\n", val); |
| 2991 | rc = put_user(val, ip); |
| 2992 | break; |
| 2993 | |
| 2994 | /* query or set sampling rate */ |
| 2995 | case SNDCTL_DSP_SPEED: |
| 2996 | if (get_user(val, ip)) { |
| 2997 | rc = -EFAULT; |
| 2998 | break; |
| 2999 | } |
| 3000 | DPRINTK ("DSP_SPEED, val==%d\n", val); |
| 3001 | if (val < 0) { |
| 3002 | rc = -EINVAL; |
| 3003 | break; |
| 3004 | } |
| 3005 | if (val > 0) { |
| 3006 | rc = 0; |
| 3007 | |
| 3008 | if (rd) |
| 3009 | rc = via_chan_set_speed (card, &card->ch_in, val); |
| 3010 | if (rc >= 0 && wr) |
| 3011 | rc = via_chan_set_speed (card, &card->ch_out, val); |
| 3012 | |
| 3013 | if (rc < 0) |
| 3014 | break; |
| 3015 | |
| 3016 | val = rc; |
| 3017 | } else { |
| 3018 | if (rd) |
| 3019 | val = card->ch_in.rate; |
| 3020 | else if (wr) |
| 3021 | val = card->ch_out.rate; |
| 3022 | else |
| 3023 | val = 0; |
| 3024 | } |
| 3025 | DPRINTK ("SPEED EXIT, returning %d\n", val); |
| 3026 | rc = put_user (val, ip); |
| 3027 | break; |
| 3028 | |
| 3029 | /* wait until all buffers have been played, and then stop device */ |
| 3030 | case SNDCTL_DSP_SYNC: |
| 3031 | DPRINTK ("DSP_SYNC\n"); |
| 3032 | rc = 0; |
| 3033 | if (wr) { |
| 3034 | DPRINTK ("SYNC EXIT (after calling via_dsp_drain_playback)\n"); |
| 3035 | rc = via_dsp_drain_playback (card, &card->ch_out, nonblock); |
| 3036 | } |
| 3037 | break; |
| 3038 | |
| 3039 | /* stop recording/playback immediately */ |
| 3040 | case SNDCTL_DSP_RESET: |
| 3041 | DPRINTK ("DSP_RESET\n"); |
| 3042 | if (rd) { |
| 3043 | via_chan_clear (card, &card->ch_in); |
| 3044 | card->ch_in.frag_number = 0; |
| 3045 | card->ch_in.frag_size = 0; |
| 3046 | atomic_set(&card->ch_in.n_frags, 0); |
| 3047 | } |
| 3048 | |
| 3049 | if (wr) { |
| 3050 | via_chan_clear (card, &card->ch_out); |
| 3051 | card->ch_out.frag_number = 0; |
| 3052 | card->ch_out.frag_size = 0; |
| 3053 | atomic_set(&card->ch_out.n_frags, 0); |
| 3054 | } |
| 3055 | |
| 3056 | rc = 0; |
| 3057 | break; |
| 3058 | |
| 3059 | case SNDCTL_DSP_NONBLOCK: |
| 3060 | file->f_flags |= O_NONBLOCK; |
| 3061 | rc = 0; |
| 3062 | break; |
| 3063 | |
| 3064 | /* obtain bitmask of device capabilities, such as mmap, full duplex, etc. */ |
| 3065 | case SNDCTL_DSP_GETCAPS: |
| 3066 | DPRINTK ("DSP_GETCAPS\n"); |
| 3067 | rc = put_user(VIA_DSP_CAP, ip); |
| 3068 | break; |
| 3069 | |
| 3070 | /* obtain buffer fragment size */ |
| 3071 | case SNDCTL_DSP_GETBLKSIZE: |
| 3072 | DPRINTK ("DSP_GETBLKSIZE\n"); |
| 3073 | |
| 3074 | if (rd) { |
| 3075 | via_chan_set_buffering(card, &card->ch_in, -1); |
| 3076 | rc = put_user(card->ch_in.frag_size, ip); |
| 3077 | } else if (wr) { |
| 3078 | via_chan_set_buffering(card, &card->ch_out, -1); |
| 3079 | rc = put_user(card->ch_out.frag_size, ip); |
| 3080 | } |
| 3081 | break; |
| 3082 | |
| 3083 | /* obtain information about input buffering */ |
| 3084 | case SNDCTL_DSP_GETISPACE: |
| 3085 | DPRINTK ("DSP_GETISPACE\n"); |
| 3086 | if (rd) |
| 3087 | rc = via_dsp_ioctl_space (card, &card->ch_in, p); |
| 3088 | break; |
| 3089 | |
| 3090 | /* obtain information about output buffering */ |
| 3091 | case SNDCTL_DSP_GETOSPACE: |
| 3092 | DPRINTK ("DSP_GETOSPACE\n"); |
| 3093 | if (wr) |
| 3094 | rc = via_dsp_ioctl_space (card, &card->ch_out, p); |
| 3095 | break; |
| 3096 | |
| 3097 | /* obtain information about input hardware pointer */ |
| 3098 | case SNDCTL_DSP_GETIPTR: |
| 3099 | DPRINTK ("DSP_GETIPTR\n"); |
| 3100 | if (rd) |
| 3101 | rc = via_dsp_ioctl_ptr (card, &card->ch_in, p); |
| 3102 | break; |
| 3103 | |
| 3104 | /* obtain information about output hardware pointer */ |
| 3105 | case SNDCTL_DSP_GETOPTR: |
| 3106 | DPRINTK ("DSP_GETOPTR\n"); |
| 3107 | if (wr) |
| 3108 | rc = via_dsp_ioctl_ptr (card, &card->ch_out, p); |
| 3109 | break; |
| 3110 | |
| 3111 | /* return number of bytes remaining to be played by DMA engine */ |
| 3112 | case SNDCTL_DSP_GETODELAY: |
| 3113 | { |
| 3114 | DPRINTK ("DSP_GETODELAY\n"); |
| 3115 | |
| 3116 | chan = &card->ch_out; |
| 3117 | |
| 3118 | if (!wr) |
| 3119 | break; |
| 3120 | |
| 3121 | if (chan->is_active) { |
| 3122 | |
| 3123 | val = chan->frag_number - atomic_read (&chan->n_frags); |
| 3124 | |
| 3125 | assert(val >= 0); |
| 3126 | |
| 3127 | if (val > 0) { |
| 3128 | val *= chan->frag_size; |
| 3129 | val -= chan->frag_size - via_sg_offset(chan); |
| 3130 | } |
| 3131 | val += chan->slop_len % chan->frag_size; |
| 3132 | } else |
| 3133 | val = 0; |
| 3134 | |
| 3135 | assert (val <= (chan->frag_size * chan->frag_number)); |
| 3136 | |
| 3137 | DPRINTK ("GETODELAY EXIT, val = %d bytes\n", val); |
| 3138 | rc = put_user (val, ip); |
| 3139 | break; |
| 3140 | } |
| 3141 | |
| 3142 | /* handle the quick-start of a channel, |
| 3143 | * or the notification that a quick-start will |
| 3144 | * occur in the future |
| 3145 | */ |
| 3146 | case SNDCTL_DSP_SETTRIGGER: |
| 3147 | if (get_user(val, ip)) { |
| 3148 | rc = -EFAULT; |
| 3149 | break; |
| 3150 | } |
| 3151 | DPRINTK ("DSP_SETTRIGGER, rd=%d, wr=%d, act=%d/%d, en=%d/%d\n", |
| 3152 | rd, wr, card->ch_in.is_active, card->ch_out.is_active, |
| 3153 | card->ch_in.is_enabled, card->ch_out.is_enabled); |
| 3154 | |
| 3155 | rc = 0; |
| 3156 | |
| 3157 | if (rd) |
| 3158 | rc = via_dsp_ioctl_trigger (&card->ch_in, val); |
| 3159 | |
| 3160 | if (!rc && wr) |
| 3161 | rc = via_dsp_ioctl_trigger (&card->ch_out, val); |
| 3162 | |
| 3163 | break; |
| 3164 | |
| 3165 | case SNDCTL_DSP_GETTRIGGER: |
| 3166 | val = 0; |
| 3167 | if ((file->f_mode & FMODE_READ) && card->ch_in.is_enabled) |
| 3168 | val |= PCM_ENABLE_INPUT; |
| 3169 | if ((file->f_mode & FMODE_WRITE) && card->ch_out.is_enabled) |
| 3170 | val |= PCM_ENABLE_OUTPUT; |
| 3171 | rc = put_user(val, ip); |
| 3172 | break; |
| 3173 | |
| 3174 | /* Enable full duplex. Since we do this as soon as we are opened |
| 3175 | * with O_RDWR, this is mainly a no-op that always returns success. |
| 3176 | */ |
| 3177 | case SNDCTL_DSP_SETDUPLEX: |
| 3178 | DPRINTK ("DSP_SETDUPLEX\n"); |
| 3179 | if (!rd || !wr) |
| 3180 | break; |
| 3181 | rc = 0; |
| 3182 | break; |
| 3183 | |
| 3184 | /* set fragment size. implemented as a successful no-op for now */ |
| 3185 | case SNDCTL_DSP_SETFRAGMENT: |
| 3186 | if (get_user(val, ip)) { |
| 3187 | rc = -EFAULT; |
| 3188 | break; |
| 3189 | } |
| 3190 | DPRINTK ("DSP_SETFRAGMENT, val==%d\n", val); |
| 3191 | |
| 3192 | if (rd) |
| 3193 | rc = via_chan_set_buffering(card, &card->ch_in, val); |
| 3194 | |
| 3195 | if (wr) |
| 3196 | rc = via_chan_set_buffering(card, &card->ch_out, val); |
| 3197 | |
| 3198 | DPRINTK ("SNDCTL_DSP_SETFRAGMENT (fragshift==0x%04X (%d), maxfrags==0x%04X (%d))\n", |
| 3199 | val & 0xFFFF, |
| 3200 | val & 0xFFFF, |
| 3201 | (val >> 16) & 0xFFFF, |
| 3202 | (val >> 16) & 0xFFFF); |
| 3203 | |
| 3204 | rc = 0; |
| 3205 | break; |
| 3206 | |
| 3207 | /* inform device of an upcoming pause in input (or output). */ |
| 3208 | case SNDCTL_DSP_POST: |
| 3209 | DPRINTK ("DSP_POST\n"); |
| 3210 | if (wr) { |
| 3211 | if (card->ch_out.slop_len > 0) |
| 3212 | via_chan_flush_frag (&card->ch_out); |
| 3213 | via_chan_maybe_start (&card->ch_out); |
| 3214 | } |
| 3215 | |
| 3216 | rc = 0; |
| 3217 | break; |
| 3218 | |
| 3219 | /* not implemented */ |
| 3220 | default: |
| 3221 | DPRINTK ("unhandled ioctl, cmd==%u, arg==%p\n", |
| 3222 | cmd, p); |
| 3223 | break; |
| 3224 | } |
| 3225 | |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 3226 | mutex_unlock(&card->syscall_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3227 | DPRINTK ("EXIT, returning %d\n", rc); |
| 3228 | return rc; |
| 3229 | } |
| 3230 | |
| 3231 | |
| 3232 | static int via_dsp_open (struct inode *inode, struct file *file) |
| 3233 | { |
| 3234 | int minor = iminor(inode); |
| 3235 | struct via_info *card; |
| 3236 | struct pci_dev *pdev = NULL; |
| 3237 | struct via_channel *chan; |
| 3238 | struct pci_driver *drvr; |
| 3239 | int nonblock = (file->f_flags & O_NONBLOCK); |
| 3240 | |
| 3241 | DPRINTK ("ENTER, minor=%d, file->f_mode=0x%x\n", minor, file->f_mode); |
| 3242 | |
| 3243 | if (!(file->f_mode & (FMODE_READ | FMODE_WRITE))) { |
| 3244 | DPRINTK ("EXIT, returning -EINVAL\n"); |
| 3245 | return -EINVAL; |
| 3246 | } |
| 3247 | |
| 3248 | card = NULL; |
Alan Cox | 14fef64 | 2006-09-30 23:27:26 -0700 | [diff] [blame] | 3249 | while ((pdev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pdev)) != NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3250 | drvr = pci_dev_driver (pdev); |
| 3251 | if (drvr == &via_driver) { |
| 3252 | assert (pci_get_drvdata (pdev) != NULL); |
| 3253 | |
| 3254 | card = pci_get_drvdata (pdev); |
| 3255 | DPRINTK ("dev_dsp = %d, minor = %d, assn = %d\n", |
| 3256 | card->dev_dsp, minor, |
| 3257 | (card->dev_dsp ^ minor) & ~0xf); |
| 3258 | |
| 3259 | if (((card->dev_dsp ^ minor) & ~0xf) == 0) |
| 3260 | goto match; |
| 3261 | } |
| 3262 | } |
| 3263 | |
| 3264 | DPRINTK ("no matching %s found\n", card ? "minor" : "driver"); |
| 3265 | return -ENODEV; |
| 3266 | |
| 3267 | match: |
Alan Cox | 14fef64 | 2006-09-30 23:27:26 -0700 | [diff] [blame] | 3268 | pci_dev_put(pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3269 | if (nonblock) { |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 3270 | if (!mutex_trylock(&card->open_mutex)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3271 | DPRINTK ("EXIT, returning -EAGAIN\n"); |
| 3272 | return -EAGAIN; |
| 3273 | } |
| 3274 | } else { |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 3275 | if (mutex_lock_interruptible(&card->open_mutex)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3276 | DPRINTK ("EXIT, returning -ERESTARTSYS\n"); |
| 3277 | return -ERESTARTSYS; |
| 3278 | } |
| 3279 | } |
| 3280 | |
| 3281 | file->private_data = card; |
| 3282 | DPRINTK ("file->f_mode == 0x%x\n", file->f_mode); |
| 3283 | |
| 3284 | /* handle input from analog source */ |
| 3285 | if (file->f_mode & FMODE_READ) { |
| 3286 | chan = &card->ch_in; |
| 3287 | |
| 3288 | via_chan_init (card, chan); |
| 3289 | |
| 3290 | /* why is this forced to 16-bit stereo in all drivers? */ |
| 3291 | chan->pcm_fmt = VIA_PCM_FMT_16BIT | VIA_PCM_FMT_STEREO; |
| 3292 | chan->channels = 2; |
| 3293 | |
| 3294 | // TO DO - use FIFO: via_capture_fifo(card, 1); |
| 3295 | via_chan_pcm_fmt (chan, 0); |
| 3296 | via_set_rate (card->ac97, chan, 44100); |
| 3297 | } |
| 3298 | |
| 3299 | /* handle output to analog source */ |
| 3300 | if (file->f_mode & FMODE_WRITE) { |
| 3301 | chan = &card->ch_out; |
| 3302 | |
| 3303 | via_chan_init (card, chan); |
| 3304 | |
| 3305 | if (file->f_mode & FMODE_READ) { |
| 3306 | /* if in duplex mode make the recording and playback channels |
| 3307 | have the same settings */ |
| 3308 | chan->pcm_fmt = VIA_PCM_FMT_16BIT | VIA_PCM_FMT_STEREO; |
| 3309 | chan->channels = 2; |
| 3310 | via_chan_pcm_fmt (chan, 0); |
| 3311 | via_set_rate (card->ac97, chan, 44100); |
| 3312 | } else { |
| 3313 | if ((minor & 0xf) == SND_DEV_DSP16) { |
| 3314 | chan->pcm_fmt = VIA_PCM_FMT_16BIT; |
| 3315 | via_chan_pcm_fmt (chan, 0); |
| 3316 | via_set_rate (card->ac97, chan, 44100); |
| 3317 | } else { |
| 3318 | via_chan_pcm_fmt (chan, 1); |
| 3319 | via_set_rate (card->ac97, chan, 8000); |
| 3320 | } |
| 3321 | } |
| 3322 | } |
| 3323 | |
| 3324 | DPRINTK ("EXIT, returning 0\n"); |
| 3325 | return nonseekable_open(inode, file); |
| 3326 | } |
| 3327 | |
| 3328 | |
| 3329 | static int via_dsp_release(struct inode *inode, struct file *file) |
| 3330 | { |
| 3331 | struct via_info *card; |
| 3332 | int nonblock = (file->f_flags & O_NONBLOCK); |
| 3333 | int rc; |
| 3334 | |
| 3335 | DPRINTK ("ENTER\n"); |
| 3336 | |
| 3337 | assert (file != NULL); |
| 3338 | card = file->private_data; |
| 3339 | assert (card != NULL); |
| 3340 | |
| 3341 | rc = via_syscall_down (card, nonblock); |
| 3342 | if (rc) { |
| 3343 | DPRINTK ("EXIT (syscall_down error), rc=%d\n", rc); |
| 3344 | return rc; |
| 3345 | } |
| 3346 | |
| 3347 | if (file->f_mode & FMODE_WRITE) { |
| 3348 | rc = via_dsp_drain_playback (card, &card->ch_out, nonblock); |
| 3349 | if (rc && rc != -ERESTARTSYS) /* Nobody needs to know about ^C */ |
| 3350 | printk (KERN_DEBUG "via_audio: ignoring drain playback error %d\n", rc); |
| 3351 | |
| 3352 | via_chan_free (card, &card->ch_out); |
| 3353 | via_chan_buffer_free(card, &card->ch_out); |
| 3354 | } |
| 3355 | |
| 3356 | if (file->f_mode & FMODE_READ) { |
| 3357 | via_chan_free (card, &card->ch_in); |
| 3358 | via_chan_buffer_free (card, &card->ch_in); |
| 3359 | } |
| 3360 | |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 3361 | mutex_unlock(&card->syscall_mutex); |
| 3362 | mutex_unlock(&card->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3363 | |
| 3364 | DPRINTK ("EXIT, returning 0\n"); |
| 3365 | return 0; |
| 3366 | } |
| 3367 | |
| 3368 | |
| 3369 | /**************************************************************** |
| 3370 | * |
| 3371 | * Chip setup and kernel registration |
| 3372 | * |
| 3373 | * |
| 3374 | */ |
| 3375 | |
| 3376 | static int __devinit via_init_one (struct pci_dev *pdev, const struct pci_device_id *id) |
| 3377 | { |
| 3378 | #ifdef CONFIG_MIDI_VIA82CXXX |
| 3379 | u8 r42; |
| 3380 | #endif |
| 3381 | int rc; |
| 3382 | struct via_info *card; |
| 3383 | static int printed_version; |
| 3384 | |
| 3385 | DPRINTK ("ENTER\n"); |
| 3386 | |
| 3387 | if (printed_version++ == 0) |
| 3388 | printk (KERN_INFO "Via 686a/8233/8235 audio driver " VIA_VERSION "\n"); |
| 3389 | |
| 3390 | rc = pci_enable_device (pdev); |
| 3391 | if (rc) |
| 3392 | goto err_out; |
| 3393 | |
| 3394 | rc = pci_request_regions (pdev, "via82cxxx_audio"); |
| 3395 | if (rc) |
| 3396 | goto err_out_disable; |
| 3397 | |
Tobias Klauser | 3e90928 | 2005-05-29 01:17:29 +0200 | [diff] [blame] | 3398 | rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3399 | if (rc) |
| 3400 | goto err_out_res; |
Tobias Klauser | 3e90928 | 2005-05-29 01:17:29 +0200 | [diff] [blame] | 3401 | rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3402 | if (rc) |
| 3403 | goto err_out_res; |
| 3404 | |
| 3405 | card = kmalloc (sizeof (*card), GFP_KERNEL); |
| 3406 | if (!card) { |
| 3407 | printk (KERN_ERR PFX "out of memory, aborting\n"); |
| 3408 | rc = -ENOMEM; |
| 3409 | goto err_out_res; |
| 3410 | } |
| 3411 | |
| 3412 | pci_set_drvdata (pdev, card); |
| 3413 | |
| 3414 | memset (card, 0, sizeof (*card)); |
| 3415 | card->pdev = pdev; |
| 3416 | card->baseaddr = pci_resource_start (pdev, 0); |
| 3417 | card->card_num = via_num_cards++; |
| 3418 | spin_lock_init (&card->lock); |
| 3419 | spin_lock_init (&card->ac97_lock); |
Ingo Molnar | 910f5d2 | 2006-03-23 03:00:39 -0800 | [diff] [blame] | 3420 | mutex_init(&card->syscall_mutex); |
| 3421 | mutex_init(&card->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3422 | |
| 3423 | /* we must init these now, in case the intr handler needs them */ |
| 3424 | via_chan_init_defaults (card, &card->ch_out); |
| 3425 | via_chan_init_defaults (card, &card->ch_in); |
| 3426 | via_chan_init_defaults (card, &card->ch_fm); |
| 3427 | |
| 3428 | /* if BAR 2 is present, chip is Rev H or later, |
| 3429 | * which means it has a few extra features */ |
| 3430 | if (pci_resource_start (pdev, 2) > 0) |
| 3431 | card->rev_h = 1; |
| 3432 | |
| 3433 | /* Overkill for now, but more flexible done right */ |
| 3434 | |
| 3435 | card->intmask = id->driver_data; |
| 3436 | card->legacy = !card->intmask; |
| 3437 | card->sixchannel = id->driver_data; |
| 3438 | |
| 3439 | if(card->sixchannel) |
| 3440 | printk(KERN_INFO PFX "Six channel audio available\n"); |
| 3441 | if (pdev->irq < 1) { |
| 3442 | printk (KERN_ERR PFX "invalid PCI IRQ %d, aborting\n", pdev->irq); |
| 3443 | rc = -ENODEV; |
| 3444 | goto err_out_kfree; |
| 3445 | } |
| 3446 | |
| 3447 | if (!(pci_resource_flags (pdev, 0) & IORESOURCE_IO)) { |
| 3448 | printk (KERN_ERR PFX "unable to locate I/O resources, aborting\n"); |
| 3449 | rc = -ENODEV; |
| 3450 | goto err_out_kfree; |
| 3451 | } |
| 3452 | |
| 3453 | pci_set_master(pdev); |
| 3454 | |
| 3455 | /* |
| 3456 | * init AC97 mixer and codec |
| 3457 | */ |
| 3458 | rc = via_ac97_init (card); |
| 3459 | if (rc) { |
| 3460 | printk (KERN_ERR PFX "AC97 init failed, aborting\n"); |
| 3461 | goto err_out_kfree; |
| 3462 | } |
| 3463 | |
| 3464 | /* |
| 3465 | * init DSP device |
| 3466 | */ |
| 3467 | rc = via_dsp_init (card); |
| 3468 | if (rc) { |
| 3469 | printk (KERN_ERR PFX "DSP device init failed, aborting\n"); |
| 3470 | goto err_out_have_mixer; |
| 3471 | } |
| 3472 | |
| 3473 | /* |
| 3474 | * init and turn on interrupts, as the last thing we do |
| 3475 | */ |
| 3476 | rc = via_interrupt_init (card); |
| 3477 | if (rc) { |
| 3478 | printk (KERN_ERR PFX "interrupt init failed, aborting\n"); |
| 3479 | goto err_out_have_dsp; |
| 3480 | } |
| 3481 | |
| 3482 | printk (KERN_INFO PFX "board #%d at 0x%04lX, IRQ %d\n", |
| 3483 | card->card_num + 1, card->baseaddr, pdev->irq); |
| 3484 | |
| 3485 | #ifdef CONFIG_MIDI_VIA82CXXX |
| 3486 | /* Disable by default */ |
| 3487 | card->midi_info.io_base = 0; |
| 3488 | |
| 3489 | if(card->legacy) |
| 3490 | { |
| 3491 | pci_read_config_byte (pdev, 0x42, &r42); |
| 3492 | /* Disable MIDI interrupt */ |
| 3493 | pci_write_config_byte (pdev, 0x42, r42 | VIA_CR42_MIDI_IRQMASK); |
| 3494 | if (r42 & VIA_CR42_MIDI_ENABLE) |
| 3495 | { |
| 3496 | if (r42 & VIA_CR42_MIDI_PNP) /* Address selected by iobase 2 - not tested */ |
| 3497 | card->midi_info.io_base = pci_resource_start (pdev, 2); |
| 3498 | else /* Address selected by byte 0x43 */ |
| 3499 | { |
| 3500 | u8 r43; |
| 3501 | pci_read_config_byte (pdev, 0x43, &r43); |
| 3502 | card->midi_info.io_base = 0x300 + ((r43 & 0x0c) << 2); |
| 3503 | } |
| 3504 | |
| 3505 | card->midi_info.irq = -pdev->irq; |
| 3506 | if (probe_uart401(& card->midi_info, THIS_MODULE)) |
| 3507 | { |
| 3508 | card->midi_devc=midi_devs[card->midi_info.slots[4]]->devc; |
| 3509 | pci_write_config_byte(pdev, 0x42, r42 & ~VIA_CR42_MIDI_IRQMASK); |
| 3510 | printk("Enabled Via MIDI\n"); |
| 3511 | } |
| 3512 | } |
| 3513 | } |
| 3514 | #endif |
| 3515 | |
| 3516 | DPRINTK ("EXIT, returning 0\n"); |
| 3517 | return 0; |
| 3518 | |
| 3519 | err_out_have_dsp: |
| 3520 | via_dsp_cleanup (card); |
| 3521 | |
| 3522 | err_out_have_mixer: |
| 3523 | via_ac97_cleanup (card); |
| 3524 | |
| 3525 | err_out_kfree: |
| 3526 | #ifndef VIA_NDEBUG |
Randy Dunlap | b3c681e | 2006-06-27 02:53:53 -0700 | [diff] [blame] | 3527 | memset (card, OSS_POISON_FREE, sizeof (*card)); /* poison memory */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3528 | #endif |
| 3529 | kfree (card); |
| 3530 | |
| 3531 | err_out_res: |
| 3532 | pci_release_regions (pdev); |
| 3533 | |
| 3534 | err_out_disable: |
| 3535 | pci_disable_device (pdev); |
| 3536 | |
| 3537 | err_out: |
| 3538 | pci_set_drvdata (pdev, NULL); |
| 3539 | DPRINTK ("EXIT - returning %d\n", rc); |
| 3540 | return rc; |
| 3541 | } |
| 3542 | |
| 3543 | |
| 3544 | static void __devexit via_remove_one (struct pci_dev *pdev) |
| 3545 | { |
| 3546 | struct via_info *card; |
| 3547 | |
| 3548 | DPRINTK ("ENTER\n"); |
| 3549 | |
| 3550 | assert (pdev != NULL); |
| 3551 | card = pci_get_drvdata (pdev); |
| 3552 | assert (card != NULL); |
| 3553 | |
| 3554 | #ifdef CONFIG_MIDI_VIA82CXXX |
| 3555 | if (card->midi_info.io_base) |
| 3556 | unload_uart401(&card->midi_info); |
| 3557 | #endif |
| 3558 | |
| 3559 | free_irq (card->pdev->irq, card); |
| 3560 | via_dsp_cleanup (card); |
| 3561 | via_ac97_cleanup (card); |
| 3562 | |
| 3563 | #ifndef VIA_NDEBUG |
Randy Dunlap | b3c681e | 2006-06-27 02:53:53 -0700 | [diff] [blame] | 3564 | memset (card, OSS_POISON_FREE, sizeof (*card)); /* poison memory */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3565 | #endif |
| 3566 | kfree (card); |
| 3567 | |
| 3568 | pci_set_drvdata (pdev, NULL); |
| 3569 | |
| 3570 | pci_release_regions (pdev); |
| 3571 | pci_disable_device (pdev); |
| 3572 | pci_set_power_state (pdev, 3); /* ...zzzzzz */ |
| 3573 | |
| 3574 | DPRINTK ("EXIT\n"); |
| 3575 | return; |
| 3576 | } |
| 3577 | |
| 3578 | |
| 3579 | /**************************************************************** |
| 3580 | * |
| 3581 | * Driver initialization and cleanup |
| 3582 | * |
| 3583 | * |
| 3584 | */ |
| 3585 | |
| 3586 | static int __init init_via82cxxx_audio(void) |
| 3587 | { |
| 3588 | int rc; |
| 3589 | |
| 3590 | DPRINTK ("ENTER\n"); |
| 3591 | |
| 3592 | rc = pci_register_driver (&via_driver); |
| 3593 | if (rc) { |
| 3594 | DPRINTK ("EXIT, returning %d\n", rc); |
| 3595 | return rc; |
| 3596 | } |
| 3597 | |
| 3598 | DPRINTK ("EXIT, returning 0\n"); |
| 3599 | return 0; |
| 3600 | } |
| 3601 | |
| 3602 | |
| 3603 | static void __exit cleanup_via82cxxx_audio(void) |
| 3604 | { |
| 3605 | DPRINTK ("ENTER\n"); |
| 3606 | |
| 3607 | pci_unregister_driver (&via_driver); |
| 3608 | |
| 3609 | DPRINTK ("EXIT\n"); |
| 3610 | } |
| 3611 | |
| 3612 | |
| 3613 | module_init(init_via82cxxx_audio); |
| 3614 | module_exit(cleanup_via82cxxx_audio); |
| 3615 | |
| 3616 | MODULE_AUTHOR("Jeff Garzik"); |
| 3617 | MODULE_DESCRIPTION("DSP audio and mixer driver for Via 82Cxxx audio devices"); |
| 3618 | MODULE_LICENSE("GPL"); |
| 3619 | |