diff options
Diffstat (limited to 'sound/pci/nm256/nm256.c')
| -rw-r--r-- | sound/pci/nm256/nm256.c | 1657 |
1 files changed, 1657 insertions, 0 deletions
diff --git a/sound/pci/nm256/nm256.c b/sound/pci/nm256/nm256.c new file mode 100644 index 000000000000..356fbeac6f9e --- /dev/null +++ b/sound/pci/nm256/nm256.c @@ -0,0 +1,1657 @@ +/* + * Driver for NeoMagic 256AV and 256ZX chipsets. + * Copyright (c) 2000 by Takashi Iwai <tiwai@suse.de> + * + * Based on nm256_audio.c OSS driver in linux kernel. + * The original author of OSS nm256 driver wishes to remain anonymous, + * so I just put my acknoledgment to him/her here. + * The original author's web page is found at + * http://www.uglx.org/sony.html + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <sound/driver.h> +#include <asm/io.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/init.h> +#include <linux/pci.h> +#include <linux/slab.h> +#include <linux/moduleparam.h> +#include <sound/core.h> +#include <sound/info.h> +#include <sound/control.h> +#include <sound/pcm.h> +#include <sound/ac97_codec.h> +#include <sound/initval.h> + +#define CARD_NAME "NeoMagic 256AV/ZX" +#define DRIVER_NAME "NM256" + +MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>"); +MODULE_DESCRIPTION("NeoMagic NM256AV/ZX"); +MODULE_LICENSE("GPL"); +MODULE_SUPPORTED_DEVICE("{{NeoMagic,NM256AV}," + "{NeoMagic,NM256ZX}}"); + +/* + * some compile conditions. + */ + +static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ +static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ +static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; +static int playback_bufsize[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 16}; +static int capture_bufsize[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 16}; +static int force_ac97[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 0}; /* disabled as default */ +static int buffer_top[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 0}; /* not specified */ +static int use_cache[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 0}; /* disabled */ +static int vaio_hack[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 0}; /* disabled */ +static int reset_workaround[SNDRV_CARDS]; + +module_param_array(index, int, NULL, 0444); +MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard."); +module_param_array(id, charp, NULL, 0444); +MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard."); +module_param_array(enable, bool, NULL, 0444); +MODULE_PARM_DESC(enable, "Enable this soundcard."); +module_param_array(playback_bufsize, int, NULL, 0444); +MODULE_PARM_DESC(playback_bufsize, "DAC frame size in kB for " CARD_NAME " soundcard."); +module_param_array(capture_bufsize, int, NULL, 0444); +MODULE_PARM_DESC(capture_bufsize, "ADC frame size in kB for " CARD_NAME " soundcard."); +module_param_array(force_ac97, bool, NULL, 0444); +MODULE_PARM_DESC(force_ac97, "Force to use AC97 codec for " CARD_NAME " soundcard."); +module_param_array(buffer_top, int, NULL, 0444); +MODULE_PARM_DESC(buffer_top, "Set the top address of audio buffer for " CARD_NAME " soundcard."); +module_param_array(use_cache, bool, NULL, 0444); +MODULE_PARM_DESC(use_cache, "Enable the cache for coefficient table access."); +module_param_array(vaio_hack, bool, NULL, 0444); +MODULE_PARM_DESC(vaio_hack, "Enable workaround for Sony VAIO notebooks."); +module_param_array(reset_workaround, bool, NULL, 0444); +MODULE_PARM_DESC(reset_workaround, "Enable AC97 RESET workaround for some laptops."); + +/* + * hw definitions + */ + +/* The BIOS signature. */ +#define NM_SIGNATURE 0x4e4d0000 +/* Signature mask. */ +#define NM_SIG_MASK 0xffff0000 + +/* Size of the second memory area. */ +#define NM_PORT2_SIZE 4096 + +/* The base offset of the mixer in the second memory area. */ +#define NM_MIXER_OFFSET 0x600 + +/* The maximum size of a coefficient entry. */ +#define NM_MAX_PLAYBACK_COEF_SIZE 0x5000 +#define NM_MAX_RECORD_COEF_SIZE 0x1260 + +/* The interrupt register. */ +#define NM_INT_REG 0xa04 +/* And its bits. */ +#define NM_PLAYBACK_INT 0x40 +#define NM_RECORD_INT 0x100 +#define NM_MISC_INT_1 0x4000 +#define NM_MISC_INT_2 0x1 +#define NM_ACK_INT(chip, X) snd_nm256_writew(chip, NM_INT_REG, (X) << 1) + +/* The AV's "mixer ready" status bit and location. */ +#define NM_MIXER_STATUS_OFFSET 0xa04 +#define NM_MIXER_READY_MASK 0x0800 +#define NM_MIXER_PRESENCE 0xa06 +#define NM_PRESENCE_MASK 0x0050 +#define NM_PRESENCE_VALUE 0x0040 + +/* + * For the ZX. It uses the same interrupt register, but it holds 32 + * bits instead of 16. + */ +#define NM2_PLAYBACK_INT 0x10000 +#define NM2_RECORD_INT 0x80000 +#define NM2_MISC_INT_1 0x8 +#define NM2_MISC_INT_2 0x2 +#define NM2_ACK_INT(chip, X) snd_nm256_writel(chip, NM_INT_REG, (X)) + +/* The ZX's "mixer ready" status bit and location. */ +#define NM2_MIXER_STATUS_OFFSET 0xa06 +#define NM2_MIXER_READY_MASK 0x0800 + +/* The playback registers start from here. */ +#define NM_PLAYBACK_REG_OFFSET 0x0 +/* The record registers start from here. */ +#define NM_RECORD_REG_OFFSET 0x200 + +/* The rate register is located 2 bytes from the start of the register area. */ +#define NM_RATE_REG_OFFSET 2 + +/* Mono/stereo flag, number of bits on playback, and rate mask. */ +#define NM_RATE_STEREO 1 +#define NM_RATE_BITS_16 2 +#define NM_RATE_MASK 0xf0 + +/* Playback enable register. */ +#define NM_PLAYBACK_ENABLE_REG (NM_PLAYBACK_REG_OFFSET + 0x1) +#define NM_PLAYBACK_ENABLE_FLAG 1 +#define NM_PLAYBACK_ONESHOT 2 +#define NM_PLAYBACK_FREERUN 4 + +/* Mutes the audio output. */ +#define NM_AUDIO_MUTE_REG (NM_PLAYBACK_REG_OFFSET + 0x18) +#define NM_AUDIO_MUTE_LEFT 0x8000 +#define NM_AUDIO_MUTE_RIGHT 0x0080 + +/* Recording enable register. */ +#define NM_RECORD_ENABLE_REG (NM_RECORD_REG_OFFSET + 0) +#define NM_RECORD_ENABLE_FLAG 1 +#define NM_RECORD_FREERUN 2 + +/* coefficient buffer pointer */ +#define NM_COEFF_START_OFFSET 0x1c +#define NM_COEFF_END_OFFSET 0x20 + +/* DMA buffer offsets */ +#define NM_RBUFFER_START (NM_RECORD_REG_OFFSET + 0x4) +#define NM_RBUFFER_END (NM_RECORD_REG_OFFSET + 0x10) +#define NM_RBUFFER_WMARK (NM_RECORD_REG_OFFSET + 0xc) +#define NM_RBUFFER_CURRP (NM_RECORD_REG_OFFSET + 0x8) + +#define NM_PBUFFER_START (NM_PLAYBACK_REG_OFFSET + 0x4) +#define NM_PBUFFER_END (NM_PLAYBACK_REG_OFFSET + 0x14) +#define NM_PBUFFER_WMARK (NM_PLAYBACK_REG_OFFSET + 0xc) +#define NM_PBUFFER_CURRP (NM_PLAYBACK_REG_OFFSET + 0x8) + +/* + * type definitions + */ + +typedef struct snd_nm256 nm256_t; +typedef struct snd_nm256_stream nm256_stream_t; + +struct snd_nm256_stream { + + nm256_t *chip; + snd_pcm_substream_t *substream; + int running; + + u32 buf; /* offset from chip->buffer */ + int bufsize; /* buffer size in bytes */ + void __iomem *bufptr; /* mapped pointer */ + unsigned long bufptr_addr; /* physical address of the mapped pointer */ + + int dma_size; /* buffer size of the substream in bytes */ + int period_size; /* period size in bytes */ + int periods; /* # of periods */ + int shift; /* bit shifts */ + int cur_period; /* current period # */ + +}; + +struct snd_nm256 { + + snd_card_t *card; + + void __iomem *cport; /* control port */ + struct resource *res_cport; /* its resource */ + unsigned long cport_addr; /* physical address */ + + void __iomem *buffer; /* buffer */ + struct resource *res_buffer; /* its resource */ + unsigned long buffer_addr; /* buffer phyiscal address */ + + u32 buffer_start; /* start offset from pci resource 0 */ + u32 buffer_end; /* end offset */ + u32 buffer_size; /* total buffer size */ + + u32 all_coeff_buf; /* coefficient buffer */ + u32 coeff_buf[2]; /* coefficient buffer for each stream */ + + unsigned int coeffs_current: 1; /* coeff. table is loaded? */ + unsigned int use_cache: 1; /* use one big coef. table */ + unsigned int reset_workaround: 1; /* Workaround for some laptops to avoid freeze */ + + int mixer_base; /* register offset of ac97 mixer */ + int mixer_status_offset; /* offset of mixer status reg. */ + int mixer_status_mask; /* bit mask to test the mixer status */ + + int irq; + irqreturn_t (*interrupt)(int, void *, struct pt_regs *); + int badintrcount; /* counter to check bogus interrupts */ + + nm256_stream_t streams[2]; + + ac97_t *ac97; + + snd_pcm_t *pcm; + + struct pci_dev *pci; + + spinlock_t reg_lock; + +}; + + +/* + * include coefficient table + */ +#include "nm256_coef.c" + + +/* + * PCI ids + */ + +#ifndef PCI_VENDOR_ID_NEOMAGIC +#define PCI_VENDOR_ID_NEOMEGIC 0x10c8 +#endif +#ifndef PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO +#define PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO 0x8005 +#endif +#ifndef PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO +#define PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO 0x8006 +#endif +#ifndef PCI_DEVICE_ID_NEOMAGIC_NM256XL_PLUS_AUDIO +#define PCI_DEVICE_ID_NEOMAGIC_NM256XL_PLUS_AUDIO 0x8016 +#endif + + +static struct pci_device_id snd_nm256_ids[] = { + {PCI_VENDOR_ID_NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, + {PCI_VENDOR_ID_NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, + {PCI_VENDOR_ID_NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256XL_PLUS_AUDIO, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, + {0,}, +}; + +MODULE_DEVICE_TABLE(pci, snd_nm256_ids); + + +/* + * lowlvel stuffs + */ + +inline static u8 +snd_nm256_readb(nm256_t *chip, int offset) +{ + return readb(chip->cport + offset); +} + +inline static u16 +snd_nm256_readw(nm256_t *chip, int offset) +{ + return readw(chip->cport + offset); +} + +inline static u32 +snd_nm256_readl(nm256_t *chip, int offset) +{ + return readl(chip->cport + offset); +} + +inline static void +snd_nm256_writeb(nm256_t *chip, int offset, u8 val) +{ + writeb(val, chip->cport + offset); +} + +inline static void +snd_nm256_writew(nm256_t *chip, int offset, u16 val) +{ + writew(val, chip->cport + offset); +} + +inline static void +snd_nm256_writel(nm256_t *chip, int offset, u32 val) +{ + writel(val, chip->cport + offset); +} + +inline static void +snd_nm256_write_buffer(nm256_t *chip, void *src, int offset, int size) +{ + offset -= chip->buffer_start; +#ifdef SNDRV_CONFIG_DEBUG + if (offset < 0 || offset >= chip->buffer_size) { + snd_printk("write_buffer invalid offset = %d size = %d\n", offset, size); + return; + } +#endif + memcpy_toio(chip->buffer + offset, src, size); +} + +/* + * coefficient handlers -- what a magic! + */ + +static u16 +snd_nm256_get_start_offset(int which) +{ + u16 offset = 0; + while (which-- > 0) + offset += coefficient_sizes[which]; + return offset; +} + +static void +snd_nm256_load_one_coefficient(nm256_t *chip, int stream, u32 port, int which) +{ + u32 coeff_buf = chip->coeff_buf[stream]; + u16 offset = snd_nm256_get_start_offset(which); + u16 size = coefficient_sizes[which]; + + snd_nm256_write_buffer(chip, coefficients + offset, coeff_buf, size); + snd_nm256_writel(chip, port, coeff_buf); + /* ??? Record seems to behave differently than playback. */ + if (stream == SNDRV_PCM_STREAM_PLAYBACK) + size--; + snd_nm256_writel(chip, port + 4, coeff_buf + size); +} + +static void +snd_nm256_load_coefficient(nm256_t *chip, int stream, int number) +{ + /* The enable register for the specified engine. */ + u32 poffset = (stream == SNDRV_PCM_STREAM_CAPTURE ? NM_RECORD_ENABLE_REG : NM_PLAYBACK_ENABLE_REG); + u32 addr = NM_COEFF_START_OFFSET; + + addr += (stream == SNDRV_PCM_STREAM_CAPTURE ? NM_RECORD_REG_OFFSET : NM_PLAYBACK_REG_OFFSET); + + if (snd_nm256_readb(chip, poffset) & 1) { + snd_printd("NM256: Engine was enabled while loading coefficients!\n"); + return; + } + + /* The recording engine uses coefficient values 8-15. */ + number &= 7; + if (stream == SNDRV_PCM_STREAM_CAPTURE) + number += 8; + + if (! chip->use_cache) { + snd_nm256_load_one_coefficient(chip, stream, addr, number); + return; + } + if (! chip->coeffs_current) { + snd_nm256_write_buffer(chip, coefficients, chip->all_coeff_buf, + NM_TOTAL_COEFF_COUNT * 4); + chip->coeffs_current = 1; + } else { + u32 base = chip->all_coeff_buf; + u32 offset = snd_nm256_get_start_offset(number); + u32 end_offset = offset + coefficient_sizes[number]; + snd_nm256_writel(chip, addr, base + offset); + if (stream == SNDRV_PCM_STREAM_PLAYBACK) + end_offset--; + snd_nm256_writel(chip, addr + 4, base + end_offset); + } +} + + +/* The actual rates supported by the card. */ +static unsigned int samplerates[8] = { + 8000, 11025, 16000, 22050, 24000, 32000, 44100, 48000, +}; +static snd_pcm_hw_constraint_list_t constraints_rates = { + .count = ARRAY_SIZE(samplerates), + .list = samplerates, + .mask = 0, +}; + +/* + * return the index of the target rate + */ +static int +snd_nm256_fixed_rate(unsigned int rate) +{ + unsigned int i; + for (i = 0; i < ARRAY_SIZE(samplerates); i++) { + if (rate == samplerates[i]) + return i; + } + snd_BUG(); + return 0; +} + +/* + * set sample rate and format + */ +static void +snd_nm256_set_format(nm256_t *chip, nm256_stream_t *s, snd_pcm_substream_t *substream) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + int rate_index = snd_nm256_fixed_rate(runtime->rate); + unsigned char ratebits = (rate_index << 4) & NM_RATE_MASK; + + s->shift = 0; + if (snd_pcm_format_width(runtime->format) == 16) { + ratebits |= NM_RATE_BITS_16; + s->shift++; + } + if (runtime->channels > 1) { + ratebits |= NM_RATE_STEREO; + s->shift++; + } + + runtime->rate = samplerates[rate_index]; + + switch (substream->stream) { + case SNDRV_PCM_STREAM_PLAYBACK: + snd_nm256_load_coefficient(chip, 0, rate_index); /* 0 = playback */ + snd_nm256_writeb(chip, + NM_PLAYBACK_REG_OFFSET + NM_RATE_REG_OFFSET, + ratebits); + break; + case SNDRV_PCM_STREAM_CAPTURE: + snd_nm256_load_coefficient(chip, 1, rate_index); /* 1 = record */ + snd_nm256_writeb(chip, + NM_RECORD_REG_OFFSET + NM_RATE_REG_OFFSET, + ratebits); + break; + } +} + +/* + * start / stop + */ + +/* update the watermark (current period) */ +static void snd_nm256_pcm_mark(nm256_t *chip, nm256_stream_t *s, int reg) +{ + s->cur_period++; + s->cur_period %= s->periods; + snd_nm256_writel(chip, reg, s->buf + s->cur_period * s->period_size); +} + +#define snd_nm256_playback_mark(chip, s) snd_nm256_pcm_mark(chip, s, NM_PBUFFER_WMARK) +#define snd_nm256_capture_mark(chip, s) snd_nm256_pcm_mark(chip, s, NM_RBUFFER_WMARK) + +static void +snd_nm256_playback_start(nm256_t *chip, nm256_stream_t *s, snd_pcm_substream_t *substream) +{ + /* program buffer pointers */ + snd_nm256_writel(chip, NM_PBUFFER_START, s->buf); + snd_nm256_writel(chip, NM_PBUFFER_END, s->buf + s->dma_size - (1 << s->shift)); + snd_nm256_writel(chip, NM_PBUFFER_CURRP, s->buf); + snd_nm256_playback_mark(chip, s); + + /* Enable playback engine and interrupts. */ + snd_nm256_writeb(chip, NM_PLAYBACK_ENABLE_REG, + NM_PLAYBACK_ENABLE_FLAG | NM_PLAYBACK_FREERUN); + /* Enable both channels. */ + snd_nm256_writew(chip, NM_AUDIO_MUTE_REG, 0x0); +} + +static void +snd_nm256_capture_start(nm256_t *chip, nm256_stream_t *s, snd_pcm_substream_t *substream) +{ + /* program buffer pointers */ + snd_nm256_writel(chip, NM_RBUFFER_START, s->buf); + snd_nm256_writel(chip, NM_RBUFFER_END, s->buf + s->dma_size); + snd_nm256_writel(chip, NM_RBUFFER_CURRP, s->buf); + snd_nm256_capture_mark(chip, s); + + /* Enable playback engine and interrupts. */ + snd_nm256_writeb(chip, NM_RECORD_ENABLE_REG, + NM_RECORD_ENABLE_FLAG | NM_RECORD_FREERUN); +} + +/* Stop the play engine. */ +static void +snd_nm256_playback_stop(nm256_t *chip) +{ + /* Shut off sound from both channels. */ + snd_nm256_writew(chip, NM_AUDIO_MUTE_REG, + NM_AUDIO_MUTE_LEFT | NM_AUDIO_MUTE_RIGHT); + /* Disable play engine. */ + snd_nm256_writeb(chip, NM_PLAYBACK_ENABLE_REG, 0); +} + +static void +snd_nm256_capture_stop(nm256_t *chip) +{ + /* Disable recording engine. */ + snd_nm256_writeb(chip, NM_RECORD_ENABLE_REG, 0); +} + +static int +snd_nm256_playback_trigger(snd_pcm_substream_t *substream, int cmd) +{ + nm256_t *chip = snd_pcm_substream_chip(substream); + nm256_stream_t *s = (nm256_stream_t*)substream->runtime->private_data; + int err = 0; + + snd_assert(s != NULL, return -ENXIO); + + spin_lock(&chip->reg_lock); + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + if (! s->running) { + snd_nm256_playback_start(chip, s, substream); + s->running = 1; + } + break; + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + if (s->running) { + snd_nm256_playback_stop(chip); + s->running = 0; + } + break; + default: + err = -EINVAL; + break; + } + spin_unlock(&chip->reg_lock); + return err; +} + +static int +snd_nm256_capture_trigger(snd_pcm_substream_t *substream, int cmd) +{ + nm256_t *chip = snd_pcm_substream_chip(substream); + nm256_stream_t *s = (nm256_stream_t*)substream->runtime->private_data; + int err = 0; + + snd_assert(s != NULL, return -ENXIO); + + spin_lock(&chip->reg_lock); + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + if (! s->running) { + snd_nm256_capture_start(chip, s, substream); + s->running = 1; + } + break; + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + if (s->running) { + snd_nm256_capture_stop(chip); + s->running = 0; + } + break; + default: + err = -EINVAL; + break; + } + spin_unlock(&chip->reg_lock); + return err; +} + + +/* + * prepare playback/capture channel + */ +static int snd_nm256_pcm_prepare(snd_pcm_substream_t *substream) +{ + nm256_t *chip = snd_pcm_substream_chip(substream); + snd_pcm_runtime_t *runtime = substream->runtime; + nm256_stream_t *s = (nm256_stream_t*)runtime->private_data; + + snd_assert(s, return -ENXIO); + s->dma_size = frames_to_bytes(runtime, substream->runtime->buffer_size); + s->period_size = frames_to_bytes(runtime, substream->runtime->period_size); + s->periods = substream->runtime->periods; + s->cur_period = 0; + + spin_lock_irq(&chip->reg_lock); + s->running = 0; + snd_nm256_set_format(chip, s, substream); + spin_unlock_irq(&chip->reg_lock); + + return 0; +} + + +/* + * get the current pointer + */ +static snd_pcm_uframes_t +snd_nm256_playback_pointer(snd_pcm_substream_t * substream) +{ + nm256_t *chip = snd_pcm_substream_chip(substream); + nm256_stream_t *s = (nm256_stream_t*)substream->runtime->private_data; + unsigned long curp; + + snd_assert(s, return 0); + curp = snd_nm256_readl(chip, NM_PBUFFER_CURRP) - (unsigned long)s->buf; + curp %= s->dma_size; + return bytes_to_frames(substream->runtime, curp); +} + +static snd_pcm_uframes_t +snd_nm256_capture_pointer(snd_pcm_substream_t * substream) +{ + nm256_t *chip = snd_pcm_substream_chip(substream); + nm256_stream_t *s = (nm256_stream_t*)substream->runtime->private_data; + unsigned long curp; + + snd_assert(s != NULL, return 0); + curp = snd_nm256_readl(chip, NM_RBUFFER_CURRP) - (unsigned long)s->buf; + curp %= s->dma_size; + return bytes_to_frames(substream->runtime, curp); +} + +/* Remapped I/O space can be accessible as pointer on i386 */ +/* This might be changed in the future */ +#ifndef __i386__ +/* + * silence / copy for playback + */ +static int +snd_nm256_playback_silence(snd_pcm_substream_t *substream, + int channel, /* not used (interleaved data) */ + snd_pcm_uframes_t pos, + snd_pcm_uframes_t count) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + nm256_stream_t *s = (nm256_stream_t*)runtime->private_data; + count = frames_to_bytes(runtime, count); + pos = frames_to_bytes(runtime, pos); + memset_io(s->bufptr + pos, 0, count); + return 0; +} + +static int +snd_nm256_playback_copy(snd_pcm_substream_t *substream, + int channel, /* not used (interleaved data) */ + snd_pcm_uframes_t pos, + void __user *src, + snd_pcm_uframes_t count) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + nm256_stream_t *s = (nm256_stream_t*)runtime->private_data; + count = frames_to_bytes(runtime, count); + pos = frames_to_bytes(runtime, pos); + if (copy_from_user_toio(s->bufptr + pos, src, count)) + return -EFAULT; + return 0; +} + +/* + * copy to user + */ +static int +snd_nm256_capture_copy(snd_pcm_substream_t *substream, + int channel, /* not used (interleaved data) */ + snd_pcm_uframes_t pos, + void __user *dst, + snd_pcm_uframes_t count) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + nm256_stream_t *s = (nm256_stream_t*)runtime->private_data; + count = frames_to_bytes(runtime, count); + pos = frames_to_bytes(runtime, pos); + if (copy_to_user_fromio(dst, s->bufptr + pos, count)) + return -EFAULT; + return 0; +} + +#endif /* !__i386__ */ + + +/* + * update playback/capture watermarks + */ + +/* spinlock held! */ +static void +snd_nm256_playback_update(nm256_t *chip) +{ + nm256_stream_t *s; + + s = &chip->streams[SNDRV_PCM_STREAM_PLAYBACK]; + if (s->running && s->substream) { + spin_unlock(&chip->reg_lock); + snd_pcm_period_elapsed(s->substream); + spin_lock(&chip->reg_lock); + snd_nm256_playback_mark(chip, s); + } +} + +/* spinlock held! */ +static void +snd_nm256_capture_update(nm256_t *chip) +{ + nm256_stream_t *s; + + s = &chip->streams[SNDRV_PCM_STREAM_CAPTURE]; + if (s->running && s->substream) { + spin_unlock(&chip->reg_lock); + snd_pcm_period_elapsed(s->substream); + spin_lock(&chip->reg_lock); + snd_nm256_capture_mark(chip, s); + } +} + +/* + * hardware info + */ +static snd_pcm_hardware_t snd_nm256_playback = +{ + .info = SNDRV_PCM_INFO_MMAP_IOMEM |SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_INTERLEAVED | + /*SNDRV_PCM_INFO_PAUSE |*/ + SNDRV_PCM_INFO_RESUME, + .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE, + .rates = SNDRV_PCM_RATE_KNOT/*24k*/ | SNDRV_PCM_RATE_8000_48000, + .rate_min = 8000, + .rate_max = 48000, + .channels_min = 1, + .channels_max = 2, + .periods_min = 2, + .periods_max = 1024, + .buffer_bytes_max = 128 * 1024, + .period_bytes_min = 256, + .period_bytes_max = 128 * 1024, +}; + +static snd_pcm_hardware_t snd_nm256_capture = +{ + .info = SNDRV_PCM_INFO_MMAP_IOMEM | SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_INTERLEAVED | + /*SNDRV_PCM_INFO_PAUSE |*/ + SNDRV_PCM_INFO_RESUME, + .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE, + .rates = SNDRV_PCM_RATE_KNOT/*24k*/ | SNDRV_PCM_RATE_8000_48000, + .rate_min = 8000, + .rate_max = 48000, + .channels_min = 1, + .channels_max = 2, + .periods_min = 2, + .periods_max = 1024, + .buffer_bytes_max = 128 * 1024, + .period_bytes_min = 256, + .period_bytes_max = 128 * 1024, +}; + + +/* set dma transfer size */ +static int snd_nm256_pcm_hw_params(snd_pcm_substream_t *substream, snd_pcm_hw_params_t *hw_params) +{ + /* area and addr are already set and unchanged */ + substream->runtime->dma_bytes = params_buffer_bytes(hw_params); + return 0; +} + +/* + * open + */ +static void snd_nm256_setup_stream(nm256_t *chip, nm256_stream_t *s, + snd_pcm_substream_t *substream, + snd_pcm_hardware_t *hw_ptr) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + + s->running = 0; + runtime->hw = *hw_ptr; + runtime->hw.buffer_bytes_max = s->bufsize; + runtime->hw.period_bytes_max = s->bufsize / 2; + runtime->dma_area = (void*) s->bufptr; + runtime->dma_addr = s->bufptr_addr; + runtime->dma_bytes = s->bufsize; + runtime->private_data = s; + s->substream = substream; + + snd_pcm_set_sync(substream); + snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, + &constraints_rates); +} + +static int +snd_nm256_playback_open(snd_pcm_substream_t *substream) +{ + nm256_t *chip = snd_pcm_substream_chip(substream); + + snd_nm256_setup_stream(chip, &chip->streams[SNDRV_PCM_STREAM_PLAYBACK], + substream, &snd_nm256_playback); + return 0; +} + +static int +snd_nm256_capture_open(snd_pcm_substream_t *substream) +{ + nm256_t *chip = snd_pcm_substream_chip(substream); + + snd_nm256_setup_stream(chip, &chip->streams[SNDRV_PCM_STREAM_CAPTURE], + substream, &snd_nm256_capture); + return 0; +} + +/* + * close - we don't have to do special.. + */ +static int +snd_nm256_playback_close(snd_pcm_substream_t *substream) +{ + return 0; +} + + +static int +snd_nm256_capture_close(snd_pcm_substream_t *substream) +{ + return 0; +} + +/* + * create a pcm instance + */ +static snd_pcm_ops_t snd_nm256_playback_ops = { + .open = snd_nm256_playback_open, + .close = snd_nm256_playback_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = snd_nm256_pcm_hw_params, + .prepare = snd_nm256_pcm_prepare, + .trigger = snd_nm256_playback_trigger, + .pointer = snd_nm256_playback_pointer, +#ifndef __i386__ + .copy = snd_nm256_playback_copy, + .silence = snd_nm256_playback_silence, +#endif + .mmap = snd_pcm_lib_mmap_iomem, +}; + +static snd_pcm_ops_t snd_nm256_capture_ops = { + .open = snd_nm256_capture_open, + .close = snd_nm256_capture_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = snd_nm256_pcm_hw_params, + .prepare = snd_nm256_pcm_prepare, + .trigger = snd_nm256_capture_trigger, + .pointer = snd_nm256_capture_pointer, +#ifndef __i386__ + .copy = snd_nm256_capture_copy, +#endif + .mmap = snd_pcm_lib_mmap_iomem, +}; + +static int __devinit +snd_nm256_pcm(nm256_t *chip, int device) +{ + snd_pcm_t *pcm; + int i, err; + + for (i = 0; i < 2; i++) { + nm256_stream_t *s = &chip->streams[i]; + s->bufptr = chip->buffer + (s->buf - chip->buffer_start); + s->bufptr_addr = chip->buffer_addr + (s->buf - chip->buffer_start); + } + + err = snd_pcm_new(chip->card, chip->card->driver, device, + 1, 1, &pcm); + if (err < 0) + return err; + + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_nm256_playback_ops); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_nm256_capture_ops); + + pcm->private_data = chip; + pcm->info_flags = 0; + chip->pcm = pcm; + + return 0; +} + + +/* + * Initialize the hardware. + */ +static void +snd_nm256_init_chip(nm256_t *chip) +{ + spin_lock_irq(&chip->reg_lock); + /* Reset everything. */ + snd_nm256_writeb(chip, 0x0, 0x11); + snd_nm256_writew(chip, 0x214, 0); + /* stop sounds.. */ + //snd_nm256_playback_stop(chip); + //snd_nm256_capture_stop(chip); + spin_unlock_irq(&chip->reg_lock); +} + + +inline static void +snd_nm256_intr_check(nm256_t *chip) +{ + if (chip->badintrcount++ > 1000) { + /* + * I'm not sure if the best thing is to stop the card from + * playing or just release the interrupt (after all, we're in + * a bad situation, so doing fancy stuff may not be such a good + * idea). + * + * I worry about the card engine continuing to play noise + * over and over, however--that could become a very + * obnoxious problem. And we know that when this usually + * happens things are fairly safe, it just means the user's + * inserted a PCMCIA card and someone's spamming us with IRQ 9s. + */ + if (chip->streams[SNDRV_PCM_STREAM_PLAYBACK].running) + snd_nm256_playback_stop(chip); + if (chip->streams[SNDRV_PCM_STREAM_CAPTURE].running) + snd_nm256_capture_stop(chip); + chip->badintrcount = 0; + } +} + +/* + * Handle a potential interrupt for the device referred to by DEV_ID. + * + * I don't like the cut-n-paste job here either between the two routines, + * but there are sufficient differences between the two interrupt handlers + * that parameterizing it isn't all that great either. (Could use a macro, + * I suppose...yucky bleah.) + */ + +static irqreturn_t +snd_nm256_interrupt(int irq, void *dev_id, struct pt_regs *dummy) +{ + nm256_t *chip = dev_id; + u16 status; + u8 cbyte; + + status = snd_nm256_readw(chip, NM_INT_REG); + + /* Not ours. */ + if (status == 0) { + snd_nm256_intr_check(chip); + return IRQ_NONE; + } + + chip->badintrcount = 0; + + /* Rather boring; check for individual interrupts and process them. */ + + spin_lock(&chip->reg_lock); + if (status & NM_PLAYBACK_INT) { + status &= ~NM_PLAYBACK_INT; + NM_ACK_INT(chip, NM_PLAYBACK_INT); + snd_nm256_playback_update(chip); + } + + if (status & NM_RECORD_INT) { + status &= ~NM_RECORD_INT; + NM_ACK_INT(chip, NM_RECORD_INT); + snd_nm256_capture_update(chip); + } + + if (status & NM_MISC_INT_1) { + status &= ~NM_MISC_INT_1; + NM_ACK_INT(chip, NM_MISC_INT_1); + snd_printd("NM256: Got misc interrupt #1\n"); + snd_nm256_writew(chip, NM_INT_REG, 0x8000); + cbyte = snd_nm256_readb(chip, 0x400); + snd_nm256_writeb(chip, 0x400, cbyte | 2); + } + + if (status & NM_MISC_INT_2) { + status &= ~NM_MISC_INT_2; + NM_ACK_INT(chip, NM_MISC_INT_2); + snd_printd("NM256: Got misc interrupt #2\n"); + cbyte = snd_nm256_readb(chip, 0x400); + snd_nm256_writeb(chip, 0x400, cbyte & ~2); + } + + /* Unknown interrupt. */ + if (status) { + snd_printd("NM256: Fire in the hole! Unknown status 0x%x\n", + status); + /* Pray. */ + NM_ACK_INT(chip, status); + } + + spin_unlock(&chip->reg_lock); + return IRQ_HANDLED; +} + +/* + * Handle a potential interrupt for the device referred to by DEV_ID. + * This handler is for the 256ZX, and is very similar to the non-ZX + * routine. + */ + +static irqreturn_t +snd_nm256_interrupt_zx(int irq, void *dev_id, struct pt_regs *dummy) +{ + nm256_t *chip = dev_id; + u32 status; + u8 cbyte; + + status = snd_nm256_readl(chip, NM_INT_REG); + + /* Not ours. */ + if (status == 0) { + snd_nm256_intr_check(chip); + return IRQ_NONE; + } + + chip->badintrcount = 0; + + /* Rather boring; check for individual interrupts and process them. */ + + spin_lock(&chip->reg_lock); + if (status & NM2_PLAYBACK_INT) { + status &= ~NM2_PLAYBACK_INT; + NM2_ACK_INT(chip, NM2_PLAYBACK_INT); + snd_nm256_playback_update(chip); + } + + if (status & NM2_RECORD_INT) { + status &= ~NM2_RECORD_INT; + NM2_ACK_INT(chip, NM2_RECORD_INT); + snd_nm256_capture_update(chip); + } + + if (status & NM2_MISC_INT_1) { + status &= ~NM2_MISC_INT_1; + NM2_ACK_INT(chip, NM2_MISC_INT_1); + snd_printd("NM256: Got misc interrupt #1\n"); + cbyte = snd_nm256_readb(chip, 0x400); + snd_nm256_writeb(chip, 0x400, cbyte | 2); + } + + if (status & NM2_MISC_INT_2) { + status &= ~NM2_MISC_INT_2; + NM2_ACK_INT(chip, NM2_MISC_INT_2); + snd_printd("NM256: Got misc interrupt #2\n"); + cbyte = snd_nm256_readb(chip, 0x400); + snd_nm256_writeb(chip, 0x400, cbyte & ~2); + } + + /* Unknown interrupt. */ + if (status) { + snd_printd("NM256: Fire in the hole! Unknown status 0x%x\n", + status); + /* Pray. */ + NM2_ACK_INT(chip, status); + } + + spin_unlock(&chip->reg_lock); + return IRQ_HANDLED; +} + +/* + * AC97 interface + */ + +/* + * Waits for the mixer to become ready to be written; returns a zero value + * if it timed out. + */ +static int +snd_nm256_ac97_ready(nm256_t *chip) +{ + int timeout = 10; + u32 testaddr; + u16 testb; + + testaddr = chip->mixer_status_offset; + testb = chip->mixer_status_mask; + + /* + * Loop around waiting for the mixer to become ready. + */ + while (timeout-- > 0) { + if ((snd_nm256_readw(chip, testaddr) & testb) == 0) + return 1; + udelay(100); + } + return 0; +} + +/* + */ +static unsigned short +snd_nm256_ac97_read(ac97_t *ac97, unsigned short reg) +{ + nm256_t *chip = ac97->private_data; + int res; + + if (reg >= 128) + return 0; + + if (! snd_nm256_ac97_ready(chip)) + return 0; + res = snd_nm256_readw(chip, chip->mixer_base + reg); + /* Magic delay. Bleah yucky. */ + msleep(1); + return res; +} + +/* + */ +static void +snd_nm256_ac97_write(ac97_t *ac97, + unsigned short reg, unsigned short val) +{ + nm256_t *chip = ac97->private_data; + int tries = 2; + u32 base; + + base = chip->mixer_base; + + snd_nm256_ac97_ready(chip); + + /* Wait for the write to take, too. */ + while (tries-- > 0) { + snd_nm256_writew(chip, base + reg, val); + msleep(1); /* a little delay here seems better.. */ + if (snd_nm256_ac97_ready(chip)) + return; + } + snd_printd("nm256: ac97 codec not ready..\n"); +} + +/* initialize the ac97 into a known state */ +static void +snd_nm256_ac97_reset(ac97_t *ac97) +{ + nm256_t *chip = ac97->private_data; + + /* Reset the mixer. 'Tis magic! */ + snd_nm256_writeb(chip, 0x6c0, 1); + if (! chip->reset_workaround) { + /* Dell latitude LS will lock up by this */ + snd_nm256_writeb(chip, 0x6cc, 0x87); + } + snd_nm256_writeb(chip, 0x6cc, 0x80); + snd_nm256_writeb(chip, 0x6cc, 0x0); +} + +/* create an ac97 mixer interface */ +static int __devinit +snd_nm256_mixer(nm256_t *chip) +{ + ac97_bus_t *pbus; + ac97_template_t ac97; + int i, err; + static ac97_bus_ops_t ops = { + .reset = snd_nm256_ac97_reset, + .write = snd_nm256_ac97_write, + .read = snd_nm256_ac97_read, + }; + /* looks like nm256 hangs up when unexpected registers are touched... */ + static int mixer_regs[] = { + AC97_MASTER, AC97_HEADPHONE, AC97_MASTER_MONO, + AC97_PC_BEEP, AC97_PHONE, AC97_MIC, AC97_LINE, AC97_CD, + AC97_VIDEO, AC97_AUX, AC97_PCM, AC97_REC_SEL, + AC97_REC_GAIN, AC97_GENERAL_PURPOSE, AC97_3D_CONTROL, + AC97_EXTENDED_ID, + AC97_VENDOR_ID1, AC97_VENDOR_ID2, + -1 + }; + + if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus)) < 0) + return err; + + memset(&ac97, 0, sizeof(ac97)); + ac97.scaps = AC97_SCAP_AUDIO; /* we support audio! */ + ac97.limited_regs = 1; + for (i = 0; mixer_regs[i] >= 0; i++) + set_bit(mixer_regs[i], ac97.reg_accessed); + ac97.private_data = chip; + err = snd_ac97_mixer(pbus, &ac97, &chip->ac97); + if (err < 0) + return err; + if (! (chip->ac97->id & (0xf0000000))) { + /* looks like an invalid id */ + sprintf(chip->card->mixername, "%s AC97", chip->card->driver); + } + return 0; +} + +/* + * See if the signature left by the NM256 BIOS is intact; if so, we use + * the associated address as the end of our audio buffer in the video + * RAM. + */ + +static int __devinit +snd_nm256_peek_for_sig(nm256_t *chip) +{ + /* The signature is located 1K below the end of video RAM. */ + void __iomem *temp; + /* Default buffer end is 5120 bytes below the top of RAM. */ + unsigned long pointer_found = chip->buffer_end - 0x1400; + u32 sig; + + temp = ioremap_nocache(chip->buffer_addr + chip->buffer_end - 0x400, 16); + if (temp == NULL) { + snd_printk("Unable to scan for card signature in video RAM\n"); + return -EBUSY; + } + + sig = readl(temp); + if ((sig & NM_SIG_MASK) == NM_SIGNATURE) { + u32 pointer = readl(temp + 4); + + /* + * If it's obviously invalid, don't use it + */ + if (pointer == 0xffffffff || + pointer < chip->buffer_size || + pointer > chip->buffer_end) { + snd_printk("invalid signature found: 0x%x\n", pointer); + iounmap(temp); + return -ENODEV; + } else { + pointer_found = pointer; + printk(KERN_INFO "nm256: found card signature in video RAM: 0x%x\n", pointer); + } + } + + iounmap(temp); + chip->buffer_end = pointer_found; + + return 0; +} + +#ifdef CONFIG_PM +/* + * APM event handler, so the card is properly reinitialized after a power + * event. + */ +static int nm256_suspend(snd_card_t *card, pm_message_t state) +{ + nm256_t *chip = card->pm_private_data; + + snd_pcm_suspend_all(chip->pcm); + snd_ac97_suspend(chip->ac97); + chip->coeffs_current = 0; + pci_disable_device(chip->pci); + return 0; +} + +static int nm256_resume(snd_card_t *card) +{ + nm256_t *chip = card->pm_private_data; + + /* Perform a full reset on the hardware */ + pci_enable_device(chip->pci); + snd_nm256_init_chip(chip); + + /* restore ac97 */ + snd_ac97_resume(chip->ac97); + + return 0; +} +#endif /* CONFIG_PM */ + +static int snd_nm256_free(nm256_t *chip) +{ + if (chip->streams[SNDRV_PCM_STREAM_PLAYBACK].running) + snd_nm256_playback_stop(chip); + if (chip->streams[SNDRV_PCM_STREAM_CAPTURE].running) + snd_nm256_capture_stop(chip); + + if (chip->irq >= 0) + synchronize_irq(chip->irq); + + if (chip->cport) + iounmap(chip->cport); + if (chip->buffer) + iounmap(chip->buffer); + if (chip->res_cport) { + release_resource(chip->res_cport); + kfree_nocheck(chip->res_cport); + } + if (chip->res_buffer) { + release_resource(chip->res_buffer); + kfree_nocheck(chip->res_buffer); + } + if (chip->irq >= 0) + free_irq(chip->irq, (void*)chip); + + pci_disable_device(chip->pci); + kfree(chip); + return 0; +} + +static int snd_nm256_dev_free(snd_device_t *device) +{ + nm256_t *chip = device->device_data; + return snd_nm256_free(chip); +} + +static int __devinit +snd_nm256_create(snd_card_t *card, struct pci_dev *pci, + int play_bufsize, int capt_bufsize, + int force_load, + u32 buffertop, + int usecache, + nm256_t **chip_ret) +{ + nm256_t *chip; + int err, pval; + static snd_device_ops_t ops = { + .dev_free = snd_nm256_dev_free, + }; + u32 addr; + + *chip_ret = NULL; + + if ((err = pci_enable_device(pci)) < 0) + return err; + + chip = kcalloc(1, sizeof(*chip), GFP_KERNEL); + if (chip == NULL) { + pci_disable_device(pci); + return -ENOMEM; + } + + chip->card = card; + chip->pci = pci; + chip->use_cache = usecache; + spin_lock_init(&chip->reg_lock); + chip->irq = -1; + + chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize = play_bufsize; + chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize = capt_bufsize; + + /* + * The NM256 has two memory ports. The first port is nothing + * more than a chunk of video RAM, which is used as the I/O ring + * buffer. The second port has the actual juicy stuff (like the + * mixer and the playback engine control registers). + */ + + chip->buffer_addr = pci_resource_start(pci, 0); + chip->cport_addr = pci_resource_start(pci, 1); + + /* Init the memory port info. */ + /* remap control port (#2) */ + chip->res_cport = request_mem_region(chip->cport_addr, NM_PORT2_SIZE, + card->driver); + if (chip->res_cport == NULL) { + snd_printk("memory region 0x%lx (size 0x%x) busy\n", + chip->cport_addr, NM_PORT2_SIZE); + err = -EBUSY; + goto __error; + } + chip->cport = ioremap_nocache(chip->cport_addr, NM_PORT2_SIZE); + if (chip->cport == NULL) { + snd_printk("unable to map control port %lx\n", chip->cport_addr); + err = -ENOMEM; + goto __error; + } + + if (!strcmp(card->driver, "NM256AV")) { + /* Ok, try to see if this is a non-AC97 version of the hardware. */ + pval = snd_nm256_readw(chip, NM_MIXER_PRESENCE); + if ((pval & NM_PRESENCE_MASK) != NM_PRESENCE_VALUE) { + if (! force_load) { + printk(KERN_ERR "nm256: no ac97 is found!\n"); + printk(KERN_ERR " force the driver to load by passing in the module parameter\n"); + printk(KERN_ERR " force_ac97=1\n"); + printk(KERN_ERR " or try sb16 or cs423x drivers instead.\n"); + err = -ENXIO; + goto __error; + } + } + chip->buffer_end = 2560 * 1024; + chip->interrupt = snd_nm256_interrupt; + chip->mixer_status_offset = NM_MIXER_STATUS_OFFSET; + chip->mixer_status_mask = NM_MIXER_READY_MASK; + } else { + /* Not sure if there is any relevant detect for the ZX or not. */ + if (snd_nm256_readb(chip, 0xa0b) != 0) + chip->buffer_end = 6144 * 1024; + else + chip->buffer_end = 4096 * 1024; + + chip->interrupt = snd_nm256_interrupt_zx; + chip->mixer_status_offset = NM2_MIXER_STATUS_OFFSET; + chip->mixer_status_mask = NM2_MIXER_READY_MASK; + } + + chip->buffer_size = chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize + chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize; + if (chip->use_cache) + chip->buffer_size += NM_TOTAL_COEFF_COUNT * 4; + else + chip->buffer_size += NM_MAX_PLAYBACK_COEF_SIZE + NM_MAX_RECORD_COEF_SIZE; + + if (buffertop >= chip->buffer_size && buffertop < chip->buffer_end) + chip->buffer_end = buffertop; + else { + /* get buffer end pointer from signature */ + if ((err = snd_nm256_peek_for_sig(chip)) < 0) + goto __error; + } + + chip->buffer_start = chip->buffer_end - chip->buffer_size; + chip->buffer_addr += chip->buffer_start; + + printk(KERN_INFO "nm256: Mapping port 1 from 0x%x - 0x%x\n", + chip->buffer_start, chip->buffer_end); + + chip->res_buffer = request_mem_region(chip->buffer_addr, + chip->buffer_size, + card->driver); + if (chip->res_buffer == NULL) { + snd_printk("nm256: buffer 0x%lx (size 0x%x) busy\n", + chip->buffer_addr, chip->buffer_size); + err = -EBUSY; + goto __error; + } + chip->buffer = ioremap_nocache(chip->buffer_addr, chip->buffer_size); + if (chip->buffer == NULL) { + err = -ENOMEM; + snd_printk("unable to map ring buffer at %lx\n", chip->buffer_addr); + goto __error; + } + + /* set offsets */ + addr = chip->buffer_start; + chip->streams[SNDRV_PCM_STREAM_PLAYBACK].buf = addr; + addr += chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize; + chip->streams[SNDRV_PCM_STREAM_CAPTURE].buf = addr; + addr += chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize; + if (chip->use_cache) { + chip->all_coeff_buf = addr; + } else { + chip->coeff_buf[SNDRV_PCM_STREAM_PLAYBACK] = addr; + addr += NM_MAX_PLAYBACK_COEF_SIZE; + chip->coeff_buf[SNDRV_PCM_STREAM_CAPTURE] = addr; + } + + /* acquire interrupt */ + if (request_irq(pci->irq, chip->interrupt, SA_INTERRUPT|SA_SHIRQ, + card->driver, (void*)chip)) { + err = -EBUSY; + snd_printk("unable to grab IRQ %d\n", pci->irq); + goto __error; + } + chip->irq = pci->irq; + + /* Fixed setting. */ + chip->mixer_base = NM_MIXER_OFFSET; + + chip->coeffs_current = 0; + + snd_nm256_init_chip(chip); + + // pci_set_master(pci); /* needed? */ + + snd_card_set_pm_callback(card, nm256_suspend, nm256_resume, chip); + + if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) + goto __error; + + snd_card_set_dev(card, &pci->dev); + + *chip_ret = chip; + return 0; + +__error: + snd_nm256_free(chip); + return err; +} + + +struct nm256_quirk { + unsigned short vendor; + unsigned short device; + int type; +}; + +enum { NM_BLACKLISTED, NM_RESET_WORKAROUND }; + +static struct nm256_quirk nm256_quirks[] __devinitdata = { + /* HP omnibook 4150 has cs4232 codec internally */ + { .vendor = 0x103c, .device = 0x0007, .type = NM_BLACKLISTED }, + /* Sony PCG-F305 */ + { .vendor = 0x104d, .device = 0x8041, .type = NM_RESET_WORKAROUND }, + /* Dell Latitude LS */ + { .vendor = 0x1028, .device = 0x0080, .type = NM_RESET_WORKAROUND }, + { } /* terminator */ +}; + + +static int __devinit snd_nm256_probe(struct pci_dev *pci, + const struct pci_device_id *pci_id) +{ + static int dev; + snd_card_t *card; + nm256_t *chip; + int err; + unsigned int xbuffer_top; + struct nm256_quirk *q; + u16 subsystem_vendor, subsystem_device; + + if (dev >= SNDRV_CARDS) + return -ENODEV; + if (!enable[dev]) { + dev++; + return -ENOENT; + } + + pci_read_config_word(pci, PCI_SUBSYSTEM_VENDOR_ID, &subsystem_vendor); + pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &subsystem_device); + + for (q = nm256_quirks; q->vendor; q++) { + if (q->vendor == subsystem_vendor && q->device == subsystem_device) { + switch (q->type) { + case NM_BLACKLISTED: + printk(KERN_INFO "nm256: The device is blacklisted. Loading stopped\n"); + return -ENODEV; + case NM_RESET_WORKAROUND: + reset_workaround[dev] = 1; + break; + } + } + } + + card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0); + if (card == NULL) + return -ENOMEM; + + switch (pci->device) { + case PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO: + strcpy(card->driver, "NM256AV"); + break; + case PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO: + strcpy(card->driver, "NM256ZX"); + break; + case PCI_DEVICE_ID_NEOMAGIC_NM256XL_PLUS_AUDIO: + strcpy(card->driver, "NM256XL+"); + break; + default: + snd_printk("invalid device id 0x%x\n", pci->device); + snd_card_free(card); + return -EINVAL; + } + + if (vaio_hack[dev]) + xbuffer_top = 0x25a800; /* this avoids conflicts with XFree86 server */ + else + xbuffer_top = buffer_top[dev]; + + if (playback_bufsize[dev] < 4) + playback_bufsize[dev] = 4; + if (playback_bufsize[dev] > 128) + playback_bufsize[dev] = 128; + if (capture_bufsize[dev] < 4) + capture_bufsize[dev] = 4; + if (capture_bufsize[dev] > 128) + capture_bufsize[dev] = 128; + if ((err = snd_nm256_create(card, pci, + playback_bufsize[dev] * 1024, /* in bytes */ + capture_bufsize[dev] * 1024, /* in bytes */ + force_ac97[dev], + xbuffer_top, + use_cache[dev], + &chip)) < 0) { + snd_card_free(card); + return err; + } + + if (reset_workaround[dev]) { + snd_printdd(KERN_INFO "nm256: reset_workaround activated\n"); + chip->reset_workaround = 1; + } + + if ((err = snd_nm256_pcm(chip, 0)) < 0 || + (err = snd_nm256_mixer(chip)) < 0) { + snd_card_free(card); + return err; + } + + sprintf(card->shortname, "NeoMagic %s", card->driver); + sprintf(card->longname, "%s at 0x%lx & 0x%lx, irq %d", + card->shortname, + chip->buffer_addr, chip->cport_addr, chip->irq); + + if ((err = snd_card_register(card)) < 0) { + snd_card_free(card); + return err; + } + + pci_set_drvdata(pci, card); + dev++; + return 0; +} + +static void __devexit snd_nm256_remove(struct pci_dev *pci) +{ + snd_card_free(pci_get_drvdata(pci)); + pci_set_drvdata(pci, NULL); +} + + +static struct pci_driver driver = { + .name = "NeoMagic 256", + .id_table = snd_nm256_ids, + .probe = snd_nm256_probe, + .remove = __devexit_p(snd_nm256_remove), + SND_PCI_PM_CALLBACKS +}; + + +static int __init alsa_card_nm256_init(void) +{ + return pci_module_init(&driver); +} + +static void __exit alsa_card_nm256_exit(void) +{ + pci_unregister_driver(&driver); +} + +module_init(alsa_card_nm256_init) +module_exit(alsa_card_nm256_exit) |