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Diffstat (limited to 'sound/oss/ali5455.c')
| -rw-r--r-- | sound/oss/ali5455.c | 3733 |
1 files changed, 3733 insertions, 0 deletions
diff --git a/sound/oss/ali5455.c b/sound/oss/ali5455.c new file mode 100644 index 00000000000..9c9e6c0410f --- /dev/null +++ b/sound/oss/ali5455.c @@ -0,0 +1,3733 @@ +/* + * ALI ali5455 and friends ICH driver for Linux + * LEI HU <Lei_Hu@ali.com.tw> + * + * Built from: + * drivers/sound/i810_audio + * + * The ALi 5455 is similar but not quite identical to the Intel ICH + * series of controllers. Its easier to keep the driver separated from + * the i810 driver. + * + * 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., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * + * ALi 5455 theory of operation + * + * The chipset provides three DMA channels that talk to an AC97 + * CODEC (AC97 is a digital/analog mixer standard). At its simplest + * you get 48Khz audio with basic volume and mixer controls. At the + * best you get rate adaption in the codec. We set the card up so + * that we never take completion interrupts but instead keep the card + * chasing its tail around a ring buffer. This is needed for mmap + * mode audio and happens to work rather well for non-mmap modes too. + * + * The board has one output channel for PCM audio (supported) and + * a stereo line in and mono microphone input. Again these are normally + * locked to 48Khz only. Right now recording is not finished. + * + * There is no midi support, no synth support. Use timidity. To get + * esd working you need to use esd -r 48000 as it won't probe 48KHz + * by default. mpg123 can't handle 48Khz only audio so use xmms. + * + * If you need to force a specific rate set the clocking= option + * + */ + +#include <linux/module.h> +#include <linux/string.h> +#include <linux/ctype.h> +#include <linux/ioport.h> +#include <linux/sched.h> +#include <linux/delay.h> +#include <linux/sound.h> +#include <linux/slab.h> +#include <linux/soundcard.h> +#include <linux/pci.h> +#include <asm/io.h> +#include <asm/dma.h> +#include <linux/init.h> +#include <linux/poll.h> +#include <linux/spinlock.h> +#include <linux/smp_lock.h> +#include <linux/ac97_codec.h> +#include <linux/interrupt.h> +#include <asm/uaccess.h> + +#ifndef PCI_DEVICE_ID_ALI_5455 +#define PCI_DEVICE_ID_ALI_5455 0x5455 +#endif + +#ifndef PCI_VENDOR_ID_ALI +#define PCI_VENDOR_ID_ALI 0x10b9 +#endif + +static int strict_clocking = 0; +static unsigned int clocking = 0; +static unsigned int codec_pcmout_share_spdif_locked = 0; +static unsigned int codec_independent_spdif_locked = 0; +static unsigned int controller_pcmout_share_spdif_locked = 0; +static unsigned int controller_independent_spdif_locked = 0; +static unsigned int globel = 0; + +#define ADC_RUNNING 1 +#define DAC_RUNNING 2 +#define CODEC_SPDIFOUT_RUNNING 8 +#define CONTROLLER_SPDIFOUT_RUNNING 4 + +#define SPDIF_ENABLE_OUTPUT 4 /* bits 0,1 are PCM */ + +#define ALI5455_FMT_16BIT 1 +#define ALI5455_FMT_STEREO 2 +#define ALI5455_FMT_MASK 3 + +#define SPDIF_ON 0x0004 +#define SURR_ON 0x0010 +#define CENTER_LFE_ON 0x0020 +#define VOL_MUTED 0x8000 + + +#define ALI_SPDIF_OUT_CH_STATUS 0xbf +/* the 810's array of pointers to data buffers */ + +struct sg_item { +#define BUSADDR_MASK 0xFFFFFFFE + u32 busaddr; +#define CON_IOC 0x80000000 /* interrupt on completion */ +#define CON_BUFPAD 0x40000000 /* pad underrun with last sample, else 0 */ +#define CON_BUFLEN_MASK 0x0000ffff /* buffer length in samples */ + u32 control; +}; + +/* an instance of the ali channel */ +#define SG_LEN 32 +struct ali_channel { + /* these sg guys should probably be allocated + separately as nocache. Must be 8 byte aligned */ + struct sg_item sg[SG_LEN]; /* 32*8 */ + u32 offset; /* 4 */ + u32 port; /* 4 */ + u32 used; + u32 num; +}; + +/* + * we have 3 separate dma engines. pcm in, pcm out, and mic. + * each dma engine has controlling registers. These goofy + * names are from the datasheet, but make it easy to write + * code while leafing through it. + */ + +#define ENUM_ENGINE(PRE,DIG) \ +enum { \ + PRE##_BDBAR = 0x##DIG##0, /* Buffer Descriptor list Base Address */ \ + PRE##_CIV = 0x##DIG##4, /* Current Index Value */ \ + PRE##_LVI = 0x##DIG##5, /* Last Valid Index */ \ + PRE##_SR = 0x##DIG##6, /* Status Register */ \ + PRE##_PICB = 0x##DIG##8, /* Position In Current Buffer */ \ + PRE##_CR = 0x##DIG##b /* Control Register */ \ +} + +ENUM_ENGINE(OFF, 0); /* Offsets */ +ENUM_ENGINE(PI, 4); /* PCM In */ +ENUM_ENGINE(PO, 5); /* PCM Out */ +ENUM_ENGINE(MC, 6); /* Mic In */ +ENUM_ENGINE(CODECSPDIFOUT, 7); /* CODEC SPDIF OUT */ +ENUM_ENGINE(CONTROLLERSPDIFIN, A); /* CONTROLLER SPDIF In */ +ENUM_ENGINE(CONTROLLERSPDIFOUT, B); /* CONTROLLER SPDIF OUT */ + + +enum { + ALI_SCR = 0x00, /* System Control Register */ + ALI_SSR = 0x04, /* System Status Register */ + ALI_DMACR = 0x08, /* DMA Control Register */ + ALI_FIFOCR1 = 0x0c, /* FIFO Control Register 1 */ + ALI_INTERFACECR = 0x10, /* Interface Control Register */ + ALI_INTERRUPTCR = 0x14, /* Interrupt control Register */ + ALI_INTERRUPTSR = 0x18, /* Interrupt Status Register */ + ALI_FIFOCR2 = 0x1c, /* FIFO Control Register 2 */ + ALI_CPR = 0x20, /* Command Port Register */ + ALI_SPR = 0x24, /* Status Port Register */ + ALI_FIFOCR3 = 0x2c, /* FIFO Control Register 3 */ + ALI_TTSR = 0x30, /* Transmit Tag Slot Register */ + ALI_RTSR = 0x34, /* Receive Tag Slot Register */ + ALI_CSPSR = 0x38, /* Command/Status Port Status Register */ + ALI_CAS = 0x3c, /* Codec Write Semaphore Register */ + ALI_SPDIFCSR = 0xf8, /* spdif channel status register */ + ALI_SPDIFICS = 0xfc /* spdif interface control/status */ +}; + +// x-status register(x:pcm in ,pcm out, mic in,) +/* interrupts for a dma engine */ +#define DMA_INT_FIFO (1<<4) /* fifo under/over flow */ +#define DMA_INT_COMPLETE (1<<3) /* buffer read/write complete and ioc set */ +#define DMA_INT_LVI (1<<2) /* last valid done */ +#define DMA_INT_CELV (1<<1) /* last valid is current */ +#define DMA_INT_DCH (1) /* DMA Controller Halted (happens on LVI interrupts) */ //not eqult intel +#define DMA_INT_MASK (DMA_INT_FIFO|DMA_INT_COMPLETE|DMA_INT_LVI) + +/* interrupts for the whole chip */// by interrupt status register finish + +#define INT_SPDIFOUT (1<<23) /* controller spdif out INTERRUPT */ +#define INT_SPDIFIN (1<<22) +#define INT_CODECSPDIFOUT (1<<19) +#define INT_MICIN (1<<18) +#define INT_PCMOUT (1<<17) +#define INT_PCMIN (1<<16) +#define INT_CPRAIS (1<<7) +#define INT_SPRAIS (1<<5) +#define INT_GPIO (1<<1) +#define INT_MASK (INT_SPDIFOUT|INT_CODECSPDIFOUT|INT_MICIN|INT_PCMOUT|INT_PCMIN) + +#define DRIVER_VERSION "0.02ac" + +/* magic numbers to protect our data structures */ +#define ALI5455_CARD_MAGIC 0x5072696E /* "Prin" */ +#define ALI5455_STATE_MAGIC 0x63657373 /* "cess" */ +#define ALI5455_DMA_MASK 0xffffffff /* DMA buffer mask for pci_alloc_consist */ +#define NR_HW_CH 5 //I think 5 channel + +/* maxinum number of AC97 codecs connected, AC97 2.0 defined 4 */ +#define NR_AC97 2 + +/* Please note that an 8bit mono stream is not valid on this card, you must have a 16bit */ +/* stream at a minimum for this card to be happy */ +static const unsigned sample_size[] = { 1, 2, 2, 4 }; +/* Samples are 16bit values, so we are shifting to a word, not to a byte, hence shift */ +/* values are one less than might be expected */ +static const unsigned sample_shift[] = { -1, 0, 0, 1 }; + +#define ALI5455 +static char *card_names[] = { + "ALI 5455" +}; + +static struct pci_device_id ali_pci_tbl[] = { + {PCI_VENDOR_ID_ALI, PCI_DEVICE_ID_ALI_5455, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, ALI5455}, + {0,} +}; + +MODULE_DEVICE_TABLE(pci, ali_pci_tbl); + +#ifdef CONFIG_PM +#define PM_SUSPENDED(card) (card->pm_suspended) +#else +#define PM_SUSPENDED(card) (0) +#endif + +/* "software" or virtual channel, an instance of opened /dev/dsp */ +struct ali_state { + unsigned int magic; + struct ali_card *card; /* Card info */ + + /* single open lock mechanism, only used for recording */ + struct semaphore open_sem; + wait_queue_head_t open_wait; + + /* file mode */ + mode_t open_mode; + + /* virtual channel number */ + int virt; + +#ifdef CONFIG_PM + unsigned int pm_saved_dac_rate, pm_saved_adc_rate; +#endif + struct dmabuf { + /* wave sample stuff */ + unsigned int rate; + unsigned char fmt, enable, trigger; + + /* hardware channel */ + struct ali_channel *read_channel; + struct ali_channel *write_channel; + struct ali_channel *codec_spdifout_channel; + struct ali_channel *controller_spdifout_channel; + + /* OSS buffer management stuff */ + void *rawbuf; + dma_addr_t dma_handle; + unsigned buforder; + unsigned numfrag; + unsigned fragshift; + + /* our buffer acts like a circular ring */ + unsigned hwptr; /* where dma last started, updated by update_ptr */ + unsigned swptr; /* where driver last clear/filled, updated by read/write */ + int count; /* bytes to be consumed or been generated by dma machine */ + unsigned total_bytes; /* total bytes dmaed by hardware */ + + unsigned error; /* number of over/underruns */ + wait_queue_head_t wait; /* put process on wait queue when no more space in buffer */ + + /* redundant, but makes calculations easier */ + /* what the hardware uses */ + unsigned dmasize; + unsigned fragsize; + unsigned fragsamples; + + /* what we tell the user to expect */ + unsigned userfrags; + unsigned userfragsize; + + /* OSS stuff */ + unsigned mapped:1; + unsigned ready:1; + unsigned update_flag; + unsigned ossfragsize; + unsigned ossmaxfrags; + unsigned subdivision; + } dmabuf; +}; + + +struct ali_card { + struct ali_channel channel[5]; + unsigned int magic; + + /* We keep ali5455 cards in a linked list */ + struct ali_card *next; + + /* The ali has a certain amount of cross channel interaction + so we use a single per card lock */ + spinlock_t lock; + spinlock_t ac97_lock; + + /* PCI device stuff */ + struct pci_dev *pci_dev; + u16 pci_id; +#ifdef CONFIG_PM + u16 pm_suspended; + int pm_saved_mixer_settings[SOUND_MIXER_NRDEVICES][NR_AC97]; +#endif + /* soundcore stuff */ + int dev_audio; + + /* structures for abstraction of hardware facilities, codecs, banks and channels */ + struct ac97_codec *ac97_codec[NR_AC97]; + struct ali_state *states[NR_HW_CH]; + + u16 ac97_features; + u16 ac97_status; + u16 channels; + + /* hardware resources */ + unsigned long iobase; + + u32 irq; + + /* Function support */ + struct ali_channel *(*alloc_pcm_channel) (struct ali_card *); + struct ali_channel *(*alloc_rec_pcm_channel) (struct ali_card *); + struct ali_channel *(*alloc_rec_mic_channel) (struct ali_card *); + struct ali_channel *(*alloc_codec_spdifout_channel) (struct ali_card *); + struct ali_channel *(*alloc_controller_spdifout_channel) (struct ali_card *); + void (*free_pcm_channel) (struct ali_card *, int chan); + + /* We have a *very* long init time possibly, so use this to block */ + /* attempts to open our devices before we are ready (stops oops'es) */ + int initializing; +}; + + +static struct ali_card *devs = NULL; + +static int ali_open_mixdev(struct inode *inode, struct file *file); +static int ali_ioctl_mixdev(struct inode *inode, struct file *file, + unsigned int cmd, unsigned long arg); +static u16 ali_ac97_get(struct ac97_codec *dev, u8 reg); +static void ali_ac97_set(struct ac97_codec *dev, u8 reg, u16 data); + +static struct ali_channel *ali_alloc_pcm_channel(struct ali_card *card) +{ + if (card->channel[1].used == 1) + return NULL; + card->channel[1].used = 1; + return &card->channel[1]; +} + +static struct ali_channel *ali_alloc_rec_pcm_channel(struct ali_card *card) +{ + if (card->channel[0].used == 1) + return NULL; + card->channel[0].used = 1; + return &card->channel[0]; +} + +static struct ali_channel *ali_alloc_rec_mic_channel(struct ali_card *card) +{ + if (card->channel[2].used == 1) + return NULL; + card->channel[2].used = 1; + return &card->channel[2]; +} + +static struct ali_channel *ali_alloc_codec_spdifout_channel(struct ali_card *card) +{ + if (card->channel[3].used == 1) + return NULL; + card->channel[3].used = 1; + return &card->channel[3]; +} + +static struct ali_channel *ali_alloc_controller_spdifout_channel(struct ali_card *card) +{ + if (card->channel[4].used == 1) + return NULL; + card->channel[4].used = 1; + return &card->channel[4]; +} +static void ali_free_pcm_channel(struct ali_card *card, int channel) +{ + card->channel[channel].used = 0; +} + + +//add support codec spdif out +static int ali_valid_spdif_rate(struct ac97_codec *codec, int rate) +{ + unsigned long id = 0L; + + id = (ali_ac97_get(codec, AC97_VENDOR_ID1) << 16); + id |= ali_ac97_get(codec, AC97_VENDOR_ID2) & 0xffff; + switch (id) { + case 0x41445361: /* AD1886 */ + if (rate == 48000) { + return 1; + } + break; + case 0x414c4720: /* ALC650 */ + if (rate == 48000) { + return 1; + } + break; + default: /* all other codecs, until we know otherwiae */ + if (rate == 48000 || rate == 44100 || rate == 32000) { + return 1; + } + break; + } + return (0); +} + +/* ali_set_spdif_output + * + * Configure the S/PDIF output transmitter. When we turn on + * S/PDIF, we turn off the analog output. This may not be + * the right thing to do. + * + * Assumptions: + * The DSP sample rate must already be set to a supported + * S/PDIF rate (32kHz, 44.1kHz, or 48kHz) or we abort. + */ +static void ali_set_spdif_output(struct ali_state *state, int slots, + int rate) +{ + int vol; + int aud_reg; + struct ac97_codec *codec = state->card->ac97_codec[0]; + + if (!(state->card->ac97_features & 4)) { + state->card->ac97_status &= ~SPDIF_ON; + } else { + if (slots == -1) { /* Turn off S/PDIF */ + aud_reg = ali_ac97_get(codec, AC97_EXTENDED_STATUS); + ali_ac97_set(codec, AC97_EXTENDED_STATUS, (aud_reg & ~AC97_EA_SPDIF)); + + /* If the volume wasn't muted before we turned on S/PDIF, unmute it */ + if (!(state->card->ac97_status & VOL_MUTED)) { + aud_reg = ali_ac97_get(codec, AC97_MASTER_VOL_STEREO); + ali_ac97_set(codec, AC97_MASTER_VOL_STEREO, + (aud_reg & ~VOL_MUTED)); + } + state->card->ac97_status &= ~(VOL_MUTED | SPDIF_ON); + return; + } + + vol = ali_ac97_get(codec, AC97_MASTER_VOL_STEREO); + state->card->ac97_status = vol & VOL_MUTED; + + /* Set S/PDIF transmitter sample rate */ + aud_reg = ali_ac97_get(codec, AC97_SPDIF_CONTROL); + switch (rate) { + case 32000: + aud_reg = (aud_reg & AC97_SC_SPSR_MASK) | AC97_SC_SPSR_32K; + break; + case 44100: + aud_reg = (aud_reg & AC97_SC_SPSR_MASK) | AC97_SC_SPSR_44K; + break; + case 48000: + aud_reg = (aud_reg & AC97_SC_SPSR_MASK) | AC97_SC_SPSR_48K; + break; + default: + /* turn off S/PDIF */ + aud_reg = ali_ac97_get(codec, AC97_EXTENDED_STATUS); + ali_ac97_set(codec, AC97_EXTENDED_STATUS, (aud_reg & ~AC97_EA_SPDIF)); + state->card->ac97_status &= ~SPDIF_ON; + return; + } + + ali_ac97_set(codec, AC97_SPDIF_CONTROL, aud_reg); + + aud_reg = ali_ac97_get(codec, AC97_EXTENDED_STATUS); + aud_reg = (aud_reg & AC97_EA_SLOT_MASK) | slots | AC97_EA_SPDIF; + ali_ac97_set(codec, AC97_EXTENDED_STATUS, aud_reg); + + aud_reg = ali_ac97_get(codec, AC97_POWER_CONTROL); + aud_reg |= 0x0002; + ali_ac97_set(codec, AC97_POWER_CONTROL, aud_reg); + udelay(1); + + state->card->ac97_status |= SPDIF_ON; + + /* Check to make sure the configuration is valid */ + aud_reg = ali_ac97_get(codec, AC97_EXTENDED_STATUS); + if (!(aud_reg & 0x0400)) { + /* turn off S/PDIF */ + ali_ac97_set(codec, AC97_EXTENDED_STATUS, (aud_reg & ~AC97_EA_SPDIF)); + state->card->ac97_status &= ~SPDIF_ON; + return; + } + if (codec_independent_spdif_locked > 0) { + aud_reg = ali_ac97_get(codec, 0x6a); + ali_ac97_set(codec, 0x6a, (aud_reg & 0xefff)); + } + /* Mute the analog output */ + /* Should this only mute the PCM volume??? */ + } +} + +/* ali_set_dac_channels + * + * Configure the codec's multi-channel DACs + * + * The logic is backwards. Setting the bit to 1 turns off the DAC. + * + * What about the ICH? We currently configure it using the + * SNDCTL_DSP_CHANNELS ioctl. If we're turnning on the DAC, + * does that imply that we want the ICH set to support + * these channels? + * + * TODO: + * vailidate that the codec really supports these DACs + * before turning them on. + */ +static void ali_set_dac_channels(struct ali_state *state, int channel) +{ + int aud_reg; + struct ac97_codec *codec = state->card->ac97_codec[0]; + + aud_reg = ali_ac97_get(codec, AC97_EXTENDED_STATUS); + aud_reg |= AC97_EA_PRI | AC97_EA_PRJ | AC97_EA_PRK; + state->card->ac97_status &= ~(SURR_ON | CENTER_LFE_ON); + + switch (channel) { + case 2: /* always enabled */ + break; + case 4: + aud_reg &= ~AC97_EA_PRJ; + state->card->ac97_status |= SURR_ON; + break; + case 6: + aud_reg &= ~(AC97_EA_PRJ | AC97_EA_PRI | AC97_EA_PRK); + state->card->ac97_status |= SURR_ON | CENTER_LFE_ON; + break; + default: + break; + } + ali_ac97_set(codec, AC97_EXTENDED_STATUS, aud_reg); + +} + +/* set playback sample rate */ +static unsigned int ali_set_dac_rate(struct ali_state *state, + unsigned int rate) +{ + struct dmabuf *dmabuf = &state->dmabuf; + u32 new_rate; + struct ac97_codec *codec = state->card->ac97_codec[0]; + + if (!(state->card->ac97_features & 0x0001)) { + dmabuf->rate = clocking; + return clocking; + } + + if (rate > 48000) + rate = 48000; + if (rate < 8000) + rate = 8000; + dmabuf->rate = rate; + + /* + * Adjust for misclocked crap + */ + + rate = (rate * clocking) / 48000; + + if (strict_clocking && rate < 8000) { + rate = 8000; + dmabuf->rate = (rate * 48000) / clocking; + } + + new_rate = ac97_set_dac_rate(codec, rate); + if (new_rate != rate) { + dmabuf->rate = (new_rate * 48000) / clocking; + } + rate = new_rate; + return dmabuf->rate; +} + +/* set recording sample rate */ +static unsigned int ali_set_adc_rate(struct ali_state *state, + unsigned int rate) +{ + struct dmabuf *dmabuf = &state->dmabuf; + u32 new_rate; + struct ac97_codec *codec = state->card->ac97_codec[0]; + + if (!(state->card->ac97_features & 0x0001)) { + dmabuf->rate = clocking; + return clocking; + } + + if (rate > 48000) + rate = 48000; + if (rate < 8000) + rate = 8000; + dmabuf->rate = rate; + + /* + * Adjust for misclocked crap + */ + + rate = (rate * clocking) / 48000; + if (strict_clocking && rate < 8000) { + rate = 8000; + dmabuf->rate = (rate * 48000) / clocking; + } + + new_rate = ac97_set_adc_rate(codec, rate); + + if (new_rate != rate) { + dmabuf->rate = (new_rate * 48000) / clocking; + rate = new_rate; + } + return dmabuf->rate; +} + +/* set codec independent spdifout sample rate */ +static unsigned int ali_set_codecspdifout_rate(struct ali_state *state, + unsigned int rate) +{ + struct dmabuf *dmabuf = &state->dmabuf; + + if (!(state->card->ac97_features & 0x0001)) { + dmabuf->rate = clocking; + return clocking; + } + + if (rate > 48000) + rate = 48000; + if (rate < 8000) + rate = 8000; + dmabuf->rate = rate; + + return dmabuf->rate; +} + +/* set controller independent spdif out function sample rate */ +static void ali_set_spdifout_rate(struct ali_state *state, + unsigned int rate) +{ + unsigned char ch_st_sel; + unsigned short status_rate; + + switch (rate) { + case 44100: + status_rate = 0; + break; + case 32000: + status_rate = 0x300; + break; + case 48000: + default: + status_rate = 0x200; + break; + } + + ch_st_sel = inb(state->card->iobase + ALI_SPDIFICS) & ALI_SPDIF_OUT_CH_STATUS; //select spdif_out + + ch_st_sel |= 0x80; //select right + outb(ch_st_sel, (state->card->iobase + ALI_SPDIFICS)); + outb(status_rate | 0x20, (state->card->iobase + ALI_SPDIFCSR + 2)); + + ch_st_sel &= (~0x80); //select left + outb(ch_st_sel, (state->card->iobase + ALI_SPDIFICS)); + outw(status_rate | 0x10, (state->card->iobase + ALI_SPDIFCSR + 2)); +} + +/* get current playback/recording dma buffer pointer (byte offset from LBA), + called with spinlock held! */ + +static inline unsigned ali_get_dma_addr(struct ali_state *state, int rec) +{ + struct dmabuf *dmabuf = &state->dmabuf; + unsigned int civ, offset, port, port_picb; + unsigned int data; + + if (!dmabuf->enable) + return 0; + + if (rec == 1) + port = state->card->iobase + dmabuf->read_channel->port; + else if (rec == 2) + port = state->card->iobase + dmabuf->codec_spdifout_channel->port; + else if (rec == 3) + port = state->card->iobase + dmabuf->controller_spdifout_channel->port; + else + port = state->card->iobase + dmabuf->write_channel->port; + + port_picb = port + OFF_PICB; + + do { + civ = inb(port + OFF_CIV) & 31; + offset = inw(port_picb); + /* Must have a delay here! */ + if (offset == 0) + udelay(1); + + /* Reread both registers and make sure that that total + * offset from the first reading to the second is 0. + * There is an issue with SiS hardware where it will count + * picb down to 0, then update civ to the next value, + * then set the new picb to fragsize bytes. We can catch + * it between the civ update and the picb update, making + * it look as though we are 1 fragsize ahead of where we + * are. The next to we get the address though, it will + * be back in thdelay is more than long enough + * that we won't have to worry about the chip still being + * out of sync with reality ;-) + */ + } while (civ != (inb(port + OFF_CIV) & 31) || offset != inw(port_picb)); + + data = ((civ + 1) * dmabuf->fragsize - (2 * offset)) % dmabuf->dmasize; + if (inw(port_picb) == 0) + data -= 2048; + + return data; +} + +/* Stop recording (lock held) */ +static inline void __stop_adc(struct ali_state *state) +{ + struct dmabuf *dmabuf = &state->dmabuf; + struct ali_card *card = state->card; + + dmabuf->enable &= ~ADC_RUNNING; + + outl((1 << 18) | (1 << 16), card->iobase + ALI_DMACR); + udelay(1); + + outb(0, card->iobase + PI_CR); + while (inb(card->iobase + PI_CR) != 0); + + // now clear any latent interrupt bits (like the halt bit) + outb(inb(card->iobase + PI_SR) | 0x001e, card->iobase + PI_SR); + outl(inl(card->iobase + ALI_INTERRUPTSR) & INT_PCMIN, card->iobase + ALI_INTERRUPTSR); +} + +static void stop_adc(struct ali_state *state) +{ + struct ali_card *card = state->card; + unsigned long flags; + spin_lock_irqsave(&card->lock, flags); + __stop_adc(state); + spin_unlock_irqrestore(&card->lock, flags); +} + +static inline void __start_adc(struct ali_state *state) +{ + struct dmabuf *dmabuf = &state->dmabuf; + + if (dmabuf->count < dmabuf->dmasize && dmabuf->ready + && !dmabuf->enable && (dmabuf->trigger & PCM_ENABLE_INPUT)) { + dmabuf->enable |= ADC_RUNNING; + outb((1 << 4) | (1 << 2), state->card->iobase + PI_CR); + if (state->card->channel[0].used == 1) + outl(1, state->card->iobase + ALI_DMACR); // DMA CONTROL REGISTRER + udelay(100); + if (state->card->channel[2].used == 1) + outl((1 << 2), state->card->iobase + ALI_DMACR); //DMA CONTROL REGISTER + udelay(100); + } +} + +static void start_adc(struct ali_state *state) +{ + struct ali_card *card = state->card; + unsigned long flags; + + spin_lock_irqsave(&card->lock, flags); + __start_adc(state); + spin_unlock_irqrestore(&card->lock, flags); +} + +/* stop playback (lock held) */ +static inline void __stop_dac(struct ali_state *state) +{ + struct dmabuf *dmabuf = &state->dmabuf; + struct ali_card *card = state->card; + + dmabuf->enable &= ~DAC_RUNNING; + outl(0x00020000, card->iobase + 0x08); + outb(0, card->iobase + PO_CR); + while (inb(card->iobase + PO_CR) != 0) + cpu_relax(); + + outb(inb(card->iobase + PO_SR) | 0x001e, card->iobase + PO_SR); + + outl(inl(card->iobase + ALI_INTERRUPTSR) & INT_PCMOUT, card->iobase + ALI_INTERRUPTSR); +} + +static void stop_dac(struct ali_state *state) +{ + struct ali_card *card = state->card; + unsigned long flags; + spin_lock_irqsave(&card->lock, flags); + __stop_dac(state); + spin_unlock_irqrestore(&card->lock, flags); +} + +static inline void __start_dac(struct ali_state *state) +{ + struct dmabuf *dmabuf = &state->dmabuf; + if (dmabuf->count > 0 && dmabuf->ready && !dmabuf->enable && + (dmabuf->trigger & PCM_ENABLE_OUTPUT)) { + dmabuf->enable |= DAC_RUNNING; + outb((1 << 4) | (1 << 2), state->card->iobase + PO_CR); + outl((1 << 1), state->card->iobase + 0x08); //dma control register + } +} + +static void start_dac(struct ali_state *state) +{ + struct ali_card *card = state->card; + unsigned long flags; + spin_lock_irqsave(&card->lock, flags); + __start_dac(state); + spin_unlock_irqrestore(&card->lock, flags); +} + +/* stop codec and controller spdif out (lock held) */ +static inline void __stop_spdifout(struct ali_state *state) +{ + struct dmabuf *dmabuf = &state->dmabuf; + struct ali_card *card = state->card; + + if (codec_independent_spdif_locked > 0) { + dmabuf->enable &= ~CODEC_SPDIFOUT_RUNNING; + outl((1 << 19), card->iobase + 0x08); + outb(0, card->iobase + CODECSPDIFOUT_CR); + + while (inb(card->iobase + CODECSPDIFOUT_CR) != 0) + cpu_relax(); + + outb(inb(card->iobase + CODECSPDIFOUT_SR) | 0x001e, card->iobase + CODECSPDIFOUT_SR); + outl(inl(card->iobase + ALI_INTERRUPTSR) & INT_CODECSPDIFOUT, card->iobase + ALI_INTERRUPTSR); + } else { + if (controller_independent_spdif_locked > 0) { + dmabuf->enable &= ~CONTROLLER_SPDIFOUT_RUNNING; + outl((1 << 23), card->iobase + 0x08); + outb(0, card->iobase + CONTROLLERSPDIFOUT_CR); + while (inb(card->iobase + CONTROLLERSPDIFOUT_CR) != 0) + cpu_relax(); + outb(inb(card->iobase + CONTROLLERSPDIFOUT_SR) | 0x001e, card->iobase + CONTROLLERSPDIFOUT_SR); + outl(inl(card->iobase + ALI_INTERRUPTSR) & INT_SPDIFOUT, card->iobase + ALI_INTERRUPTSR); + } + } +} + +static void stop_spdifout(struct ali_state *state) +{ + struct ali_card *card = state->card; + unsigned long flags; + spin_lock_irqsave(&card->lock, flags); + __stop_spdifout(state); + spin_unlock_irqrestore(&card->lock, flags); +} + +static inline void __start_spdifout(struct ali_state *state) +{ + struct dmabuf *dmabuf = &state->dmabuf; + if (dmabuf->count > 0 && dmabuf->ready && !dmabuf->enable && + (dmabuf->trigger & SPDIF_ENABLE_OUTPUT)) { + if (codec_independent_spdif_locked > 0) { + dmabuf->enable |= CODEC_SPDIFOUT_RUNNING; + outb((1 << 4) | (1 << 2), state->card->iobase + CODECSPDIFOUT_CR); + outl((1 << 3), state->card->iobase + 0x08); //dma control register + } else { + if (controller_independent_spdif_locked > 0) { + dmabuf->enable |= CONTROLLER_SPDIFOUT_RUNNING; + outb((1 << 4) | (1 << 2), state->card->iobase + CONTROLLERSPDIFOUT_CR); + outl((1 << 7), state->card->iobase + 0x08); //dma control register + } + } + } +} + +static void start_spdifout(struct ali_state *state) +{ + struct ali_card *card = state->card; + unsigned long flags; + spin_lock_irqsave(&card->lock, flags); + __start_spdifout(state); + spin_unlock_irqrestore(&card->lock, flags); +} + +#define DMABUF_DEFAULTORDER (16-PAGE_SHIFT) +#define DMABUF_MINORDER 1 + +/* allocate DMA buffer, playback , recording,spdif out buffer should be allocated separately */ +static int alloc_dmabuf(struct ali_state *state) +{ + struct dmabuf *dmabuf = &state->dmabuf; + void *rawbuf = NULL; + int order, size; + struct page *page, *pend; + + /* If we don't have any oss frag params, then use our default ones */ + if (dmabuf->ossmaxfrags == 0) + dmabuf->ossmaxfrags = 4; + if (dmabuf->ossfragsize == 0) + dmabuf->ossfragsize = (PAGE_SIZE << DMABUF_DEFAULTORDER) / dmabuf->ossmaxfrags; + size = dmabuf->ossfragsize * dmabuf->ossmaxfrags; + + if (dmabuf->rawbuf && (PAGE_SIZE << dmabuf->buforder) == size) + return 0; + /* alloc enough to satisfy the oss params */ + for (order = DMABUF_DEFAULTORDER; order >= DMABUF_MINORDER; order--) { + if ((PAGE_SIZE << order) > size) + continue; + if ((rawbuf = pci_alloc_consistent(state->card->pci_dev, + PAGE_SIZE << order, + &dmabuf->dma_handle))) + break; + } + if (!rawbuf) + return -ENOMEM; + + dmabuf->ready = dmabuf->mapped = 0; + dmabuf->rawbuf = rawbuf; + dmabuf->buforder = order; + + /* now mark the pages as reserved; otherwise remap_pfn_range doesn't do what we want */ + pend = virt_to_page(rawbuf + (PAGE_SIZE << order) - 1); + for (page = virt_to_page(rawbuf); page <= pend; page++) + SetPageReserved(page); + return 0; +} + +/* free DMA buffer */ +static void dealloc_dmabuf(struct ali_state *state) +{ + struct dmabuf *dmabuf = &state->dmabuf; + struct page *page, *pend; + + if (dmabuf->rawbuf) { + /* undo marking the pages as reserved */ + pend = virt_to_page(dmabuf->rawbuf + (PAGE_SIZE << dmabuf->buforder) - 1); + for (page = virt_to_page(dmabuf->rawbuf); page <= pend; page++) + ClearPageReserved(page); + pci_free_consistent(state->card->pci_dev, + PAGE_SIZE << dmabuf->buforder, + dmabuf->rawbuf, dmabuf->dma_handle); + } + dmabuf->rawbuf = NULL; + dmabuf->mapped = dmabuf->ready = 0; +} + +static int prog_dmabuf(struct ali_state *state, unsigned rec) +{ + struct dmabuf *dmabuf = &state->dmabuf; + struct ali_channel *c = NULL; + struct sg_item *sg; + unsigned long flags; + int ret; + unsigned fragint; + int i; + + spin_lock_irqsave(&state->card->lock, flags); + if (dmabuf->enable & DAC_RUNNING) + __stop_dac(state); + if (dmabuf->enable & ADC_RUNNING) + __stop_adc(state); + if (dmabuf->enable & CODEC_SPDIFOUT_RUNNING) + __stop_spdifout(state); + if (dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING) + __stop_spdifout(state); + + dmabuf->total_bytes = 0; + dmabuf->count = dmabuf->error = 0; + dmabuf->swptr = dmabuf->hwptr = 0; + spin_unlock_irqrestore(&state->card->lock, flags); + + /* allocate DMA buffer, let alloc_dmabuf determine if we are already + * allocated well enough or if we should replace the current buffer + * (assuming one is already allocated, if it isn't, then allocate it). + */ + if ((ret = alloc_dmabuf(state))) + return ret; + + /* FIXME: figure out all this OSS fragment stuff */ + /* I did, it now does what it should according to the OSS API. DL */ + /* We may not have realloced our dmabuf, but the fragment size to + * fragment number ratio may have changed, so go ahead and reprogram + * things + */ + + dmabuf->dmasize = PAGE_SIZE << dmabuf->buforder; + dmabuf->numfrag = SG_LEN; + dmabuf->fragsize = dmabuf->dmasize / dmabuf->numfrag; + dmabuf->fragsamples = dmabuf->fragsize >> 1; + dmabuf->userfragsize = dmabuf->ossfragsize; + dmabuf->userfrags = dmabuf->dmasize / dmabuf->ossfragsize; + + memset(dmabuf->rawbuf, 0, dmabuf->dmasize); + + if (dmabuf->ossmaxfrags == 4) { + fragint = 8; + dmabuf->fragshift = 2; + } else if (dmabuf->ossmaxfrags == 8) { + fragint = 4; + dmabuf->fragshift = 3; + } else if (dmabuf->ossmaxfrags == 16) { + fragint = 2; + dmabuf->fragshift = 4; + } else { + fragint = 1; + dmabuf->fragshift = 5; + } + /* + * Now set up the ring + */ + + if (rec == 1) + c = dmabuf->read_channel; + else if (rec == 2) + c = dmabuf->codec_spdifout_channel; + else if (rec == 3) + c = dmabuf->controller_spdifout_channel; + else if (rec == 0) + c = dmabuf->write_channel; + if (c != NULL) { + sg = &c->sg[0]; + /* + * Load up 32 sg entries and take an interrupt at half + * way (we might want more interrupts later..) + */ + for (i = 0; i < dmabuf->numfrag; i++) { + sg->busaddr = + virt_to_bus(dmabuf->rawbuf + + dmabuf->fragsize * i); + // the card will always be doing 16bit stereo + sg->control = dmabuf->fragsamples; + sg->control |= CON_BUFPAD; //I modify + // set us up to get IOC interrupts as often as needed to + // satisfy numfrag requirements, no more + if (((i + 1) % fragint) == 0) { + sg->control |= CON_IOC; + } + sg++; + } + spin_lock_irqsave(&state->card->lock, flags); + outb(2, state->card->iobase + c->port + OFF_CR); /* reset DMA machine */ + outl(virt_to_bus(&c->sg[0]), state->card->iobase + c->port + OFF_BDBAR); + outb(0, state->card->iobase + c->port + OFF_CIV); + outb(0, state->card->iobase + c->port + OFF_LVI); + spin_unlock_irqrestore(&state->card->lock, flags); + } + /* set the ready flag for the dma buffer */ + dmabuf->ready = 1; + return 0; +} + +static void __ali_update_lvi(struct ali_state *state, int rec) +{ + struct dmabuf *dmabuf = &state->dmabuf; + int x, port; + port = state->card->iobase; + if (rec == 1) + port += dmabuf->read_channel->port; + else if (rec == 2) + port += dmabuf->codec_spdifout_channel->port; + else if (rec == 3) + port += dmabuf->controller_spdifout_channel->port; + else if (rec == 0) + port += dmabuf->write_channel->port; + /* if we are currently stopped, then our CIV is actually set to our + * *last* sg segment and we are ready to wrap to the next. However, + * if we set our LVI to the last sg segment, then it won't wrap to + * the next sg segment, it won't even get a start. So, instead, when + * we are stopped, we set both the LVI value and also we increment + * the CIV value to the next sg segment to be played so that when + * we call start_{dac,adc}, things will operate properly + */ + if (!dmabuf->enable && dmabuf->ready) { + if (rec && dmabuf->count < dmabuf->dmasize && (dmabuf->trigger & PCM_ENABLE_INPUT)) { + outb((inb(port + OFF_CIV) + 1) & 31, port + OFF_LVI); + __start_adc(state); + while (! (inb(port + OFF_CR) & ((1 << 4) | (1 << 2)))) + cpu_relax(); + } else if (!rec && dmabuf->count && (dmabuf->trigger & PCM_ENABLE_OUTPUT)) { + outb((inb(port + OFF_CIV) + 1) & 31, port + OFF_LVI); + __start_dac(state); + while (!(inb(port + OFF_CR) & ((1 << 4) | (1 << 2)))) + cpu_relax(); + } else if (rec && dmabuf->count && (dmabuf->trigger & SPDIF_ENABLE_OUTPUT)) { + if (codec_independent_spdif_locked > 0) { + // outb((inb(port+OFF_CIV))&31, port+OFF_LVI); + outb((inb(port + OFF_CIV) + 1) & 31, port + OFF_LVI); + __start_spdifout(state); + while (!(inb(port + OFF_CR) & ((1 << 4) | (1 << 2)))) + cpu_relax(); + } else { + if (controller_independent_spdif_locked > 0) { + outb((inb(port + OFF_CIV) + 1) & 31, port + OFF_LVI); + __start_spdifout(state); + while (!(inb(port + OFF_CR) & ((1 << 4) | (1 << 2)))) + cpu_relax(); + } + } + } + } + + /* swptr - 1 is the tail of our transfer */ + x = (dmabuf->dmasize + dmabuf->swptr - 1) % dmabuf->dmasize; + x /= dmabuf->fragsize; + outb(x, port + OFF_LVI); +} + +static void ali_update_lvi(struct ali_state *state, int rec) +{ + struct dmabuf *dmabuf = &state->dmabuf; + unsigned long flags; + if (!dmabuf->ready) + return; + spin_lock_irqsave(&state->card->lock, flags); + __ali_update_lvi(state, rec); + spin_unlock_irqrestore(&state->card->lock, flags); +} + +/* update buffer manangement pointers, especially, dmabuf->count and dmabuf->hwptr */ +static void ali_update_ptr(struct ali_state *state) +{ + struct dmabuf *dmabuf = &state->dmabuf; + unsigned hwptr; + int diff; + + /* error handling and process wake up for DAC */ + if (dmabuf->enable == ADC_RUNNING) { + /* update hardware pointer */ + hwptr = ali_get_dma_addr(state, 1); + diff = (dmabuf->dmasize + hwptr - dmabuf->hwptr) % dmabuf->dmasize; + dmabuf->hwptr = hwptr; + dmabuf->total_bytes += diff; + dmabuf->count += diff; + if (dmabuf->count > dmabuf->dmasize) { + /* buffer underrun or buffer overrun */ + /* this is normal for the end of a read */ + /* only give an error if we went past the */ + /* last valid sg entry */ + if ((inb(state->card->iobase + PI_CIV) & 31) != (inb(state->card->iobase + PI_LVI) & 31)) { + printk(KERN_WARNING "ali_audio: DMA overrun on read\n"); + dmabuf->error++; + } + } + if (dmabuf->count > dmabuf->userfragsize) + wake_up(&dmabuf->wait); + } + /* error handling and process wake up for DAC */ + if (dmabuf->enable == DAC_RUNNING) { + /* update hardware pointer */ + hwptr = ali_get_dma_addr(state, 0); + diff = + (dmabuf->dmasize + hwptr - + dmabuf->hwptr) % dmabuf->dmasize; +#if defined(DEBUG_INTERRUPTS) || defined(DEBUG_MMAP) + printk("DAC HWP %d,%d,%d\n", hwptr, dmabuf->hwptr, diff); +#endif + dmabuf->hwptr = hwptr; + dmabuf->total_bytes += diff; + dmabuf->count -= diff; + if (dmabuf->count < 0) { + /* buffer underrun or buffer overrun */ + /* this is normal for the end of a write */ + /* only give an error if we went past the */ + /* last valid sg entry */ + if ((inb(state->card->iobase + PO_CIV) & 31) != (inb(state->card->iobase + PO_LVI) & 31)) { + printk(KERN_WARNING "ali_audio: DMA overrun on write\n"); + printk(KERN_DEBUG "ali_audio: CIV %d, LVI %d, hwptr %x, count %d\n", + inb(state->card->iobase + PO_CIV) & 31, + inb(state->card->iobase + PO_LVI) & 31, + dmabuf->hwptr, + dmabuf->count); + dmabuf->error++; + } + } + if (dmabuf->count < (dmabuf->dmasize - dmabuf->userfragsize)) + wake_up(&dmabuf->wait); + } + + /* error handling and process wake up for CODEC SPDIF OUT */ + if (dmabuf->enable == CODEC_SPDIFOUT_RUNNING) { + /* update hardware pointer */ + hwptr = ali_get_dma_addr(state, 2); + diff = (dmabuf->dmasize + hwptr - dmabuf->hwptr) % dmabuf->dmasize; + dmabuf->hwptr = hwptr; + dmabuf->total_bytes += diff; + dmabuf->count -= diff; + if (dmabuf->count < 0) { + /* buffer underrun or buffer overrun */ + /* this is normal for the end of a write */ + /* only give an error if we went past the */ + /* last valid sg entry */ + if ((inb(state->card->iobase + CODECSPDIFOUT_CIV) & 31) != (inb(state->card->iobase + CODECSPDIFOUT_LVI) & 31)) { + printk(KERN_WARNING "ali_audio: DMA overrun on write\n"); + printk(KERN_DEBUG "ali_audio: CIV %d, LVI %d, hwptr %x, count %d\n", + inb(state->card->iobase + CODECSPDIFOUT_CIV) & 31, + inb(state->card->iobase + CODECSPDIFOUT_LVI) & 31, + dmabuf->hwptr, dmabuf->count); + dmabuf->error++; + } + } + if (dmabuf->count < (dmabuf->dmasize - dmabuf->userfragsize)) + wake_up(&dmabuf->wait); + } + /* error handling and process wake up for CONTROLLER SPDIF OUT */ + if (dmabuf->enable == CONTROLLER_SPDIFOUT_RUNNING) { + /* update hardware pointer */ + hwptr = ali_get_dma_addr(state, 3); + diff = (dmabuf->dmasize + hwptr - dmabuf->hwptr) % dmabuf->dmasize; + dmabuf->hwptr = hwptr; + dmabuf->total_bytes += diff; + dmabuf->count -= diff; + if (dmabuf->count < 0) { + /* buffer underrun or buffer overrun */ + /* this is normal for the end of a write */ + /* only give an error if we went past the */ + /* last valid sg entry */ + if ((inb(state->card->iobase + CONTROLLERSPDIFOUT_CIV) & 31) != (inb(state->card->iobase + CONTROLLERSPDIFOUT_LVI) & 31)) { + printk(KERN_WARNING + "ali_audio: DMA overrun on write\n"); + printk("ali_audio: CIV %d, LVI %d, hwptr %x, " + "count %d\n", + inb(state->card->iobase + CONTROLLERSPDIFOUT_CIV) & 31, + inb(state->card->iobase + CONTROLLERSPDIFOUT_LVI) & 31, + dmabuf->hwptr, dmabuf->count); + dmabuf->error++; + } + } + if (dmabuf->count < (dmabuf->dmasize - dmabuf->userfragsize)) + wake_up(&dmabuf->wait); + } +} + +static inline int ali_get_free_write_space(struct + ali_state + *state) +{ + struct dmabuf *dmabuf = &state->dmabuf; + int free; + + if (dmabuf->count < 0) { + dmabuf->count = 0; + dmabuf->swptr = dmabuf->hwptr; + } + free = dmabuf->dmasize - dmabuf->swptr; + if ((dmabuf->count + free) > dmabuf->dmasize){ + free = dmabuf->dmasize - dmabuf->count; + } + return free; +} + +static inline int ali_get_available_read_data(struct + ali_state + *state) +{ + struct dmabuf *dmabuf = &state->dmabuf; + int avail; + ali_update_ptr(state); + // catch overruns during record + if (dmabuf->count > dmabuf->dmasize) { + dmabuf->count = dmabuf->dmasize; + dmabuf->swptr = dmabuf->hwptr; + } + avail = dmabuf->count; + avail -= (dmabuf->hwptr % dmabuf->fragsize); + if (avail < 0) + return (0); + return (avail); +} + +static int drain_dac(struct ali_state *state, int signals_allowed) +{ + + DECLARE_WAITQUEUE(wait, current); + struct dmabuf *dmabuf = &state->dmabuf; + unsigned long flags; + unsigned long tmo; + int count; + if (!dmabuf->ready) + return 0; + if (dmabuf->mapped) { + stop_dac(state); + return 0; + } + add_wait_queue(&dmabuf->wait, &wait); + for (;;) { + + spin_lock_irqsave(&state->card->lock, flags); + ali_update_ptr(state); + count = dmabuf->count; + spin_unlock_irqrestore(&state->card->lock, flags); + if (count <= 0) + break; + /* + * This will make sure that our LVI is correct, that our + * pointer is updated, and that the DAC is running. We + * have to force the setting of dmabuf->trigger to avoid + * any possible deadlocks. + */ + if (!dmabuf->enable) { + dmabuf->trigger = PCM_ENABLE_OUTPUT; + ali_update_lvi(state, 0); + } + if (signal_pending(current) && signals_allowed) { + break; + } + + /* It seems that we have to set the current state to + * TASK_INTERRUPTIBLE every time to make the process + * really go to sleep. This also has to be *after* the + * update_ptr() call because update_ptr is likely to + * do a wake_up() which will unset this before we ever + * try to sleep, resuling in a tight loop in this code + * instead of actually sleeping and waiting for an + * interrupt to wake us up! + */ + set_current_state(TASK_INTERRUPTIBLE); + /* + * set the timeout to significantly longer than it *should* + * take for the DAC to drain the DMA buffer + */ + tmo = (count * HZ) / (dmabuf->rate); + if (!schedule_timeout(tmo >= 2 ? tmo : 2)) { + printk(KERN_ERR "ali_audio: drain_dac, dma timeout?\n"); + count = 0; + break; + } + } + set_current_state(TASK_RUNNING); + remove_wait_queue(&dmabuf->wait, &wait); + if (count > 0 && signal_pending(current) && signals_allowed) + return -ERESTARTSYS; + stop_dac(state); + return 0; +} + + +static int drain_spdifout(struct ali_state *state, int signals_allowed) +{ + + DECLARE_WAITQUEUE(wait, current); + struct dmabuf *dmabuf = &state->dmabuf; + unsigned long flags; + unsigned long tmo; + int count; + if (!dmabuf->ready) + return 0; + if (dmabuf->mapped) { + stop_spdifout(state); + return 0; + } + add_wait_queue(&dmabuf->wait, &wait); + for (;;) { + + spin_lock_irqsave(&state->card->lock, flags); + ali_update_ptr(state); + count = dmabuf->count; + spin_unlock_irqrestore(&state->card->lock, flags); + if (count <= 0) + break; + /* + * This will make sure that our LVI is correct, that our + * pointer is updated, and that the DAC is running. We + * have to force the setting of dmabuf->trigger to avoid + * any possible deadlocks. + */ + if (!dmabuf->enable) { + if (codec_independent_spdif_locked > 0) { + dmabuf->trigger = SPDIF_ENABLE_OUTPUT; + ali_update_lvi(state, 2); + } else { + if (controller_independent_spdif_locked > 0) { + dmabuf->trigger = SPDIF_ENABLE_OUTPUT; + ali_update_lvi(state, 3); + } + } + } + if (signal_pending(current) && signals_allowed) { + break; + } + + /* It seems that we have to set the current state to + * TASK_INTERRUPTIBLE every time to make the process + * really go to sleep. This also has to be *after* the + * update_ptr() call because update_ptr is likely to + * do a wake_up() which will unset this before we ever + * try to sleep, resuling in a tight loop in this code + * instead of actually sleeping and waiting for an + * interrupt to wake us up! + */ + set_current_state(TASK_INTERRUPTIBLE); + /* + * set the timeout to significantly longer than it *should* + * take for the DAC to drain the DMA buffer + */ + tmo = (count * HZ) / (dmabuf->rate); + if (!schedule_timeout(tmo >= 2 ? tmo : 2)) { + printk(KERN_ERR "ali_audio: drain_spdifout, dma timeout?\n"); + count = 0; + break; + } + } + set_current_state(TASK_RUNNING); + remove_wait_queue(&dmabuf->wait, &wait); + if (count > 0 && signal_pending(current) && signals_allowed) + return -ERESTARTSYS; + stop_spdifout(state); + return 0; +} + +static void ali_channel_interrupt(struct ali_card *card) +{ + int i, count; + + for (i = 0; i < NR_HW_CH; i++) { + struct ali_state *state = card->states[i]; + struct ali_channel *c = NULL; + struct dmabuf *dmabuf; + unsigned long port = card->iobase; + u16 status; + if (!state) + continue; + if (!state->dmabuf.ready) + continue; + dmabuf = &state->dmabuf; + if (codec_independent_spdif_locked > 0) { + if (dmabuf->enable & CODEC_SPDIFOUT_RUNNING) { + c = dmabuf->codec_spdifout_channel; + } + } else { + if (controller_independent_spdif_locked > 0) { + if (dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING) + c = dmabuf->controller_spdifout_channel; + } else { + if (dmabuf->enable & DAC_RUNNING) { + c = dmabuf->write_channel; + } else if (dmabuf->enable & ADC_RUNNING) { + c = dmabuf->read_channel; + } else + continue; + } + } + port += c->port; + + status = inw(port + OFF_SR); + + if (status & DMA_INT_COMPLETE) { + /* only wake_up() waiters if this interrupt signals + * us being beyond a userfragsize of data open or + * available, and ali_update_ptr() does that for + * us + */ + ali_update_ptr(state); + } + + if (status & DMA_INT_LVI) { + ali_update_ptr(state); + wake_up(&dmabuf->wait); + + if (dmabuf->enable & DAC_RUNNING) + count = dmabuf->count; + else if (dmabuf->enable & ADC_RUNNING) + count = dmabuf->dmasize - dmabuf->count; + else if (dmabuf->enable & CODEC_SPDIFOUT_RUNNING) + count = dmabuf->count; + else if (dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING) + count = dmabuf->count; + else count = 0; + + if (count > 0) { + if (dmabuf->enable & DAC_RUNNING) + outl((1 << 1), state->card->iobase + ALI_DMACR); + else if (dmabuf->enable & CODEC_SPDIFOUT_RUNNING) + outl((1 << 3), state->card->iobase + ALI_DMACR); + else if (dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING) + outl((1 << 7), state->card->iobase + ALI_DMACR); + } else { + if (dmabuf->enable & DAC_RUNNING) + __stop_dac(state); + if (dmabuf->enable & ADC_RUNNING) + __stop_adc(state); + if (dmabuf->enable & CODEC_SPDIFOUT_RUNNING) + __stop_spdifout(state); + if (dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING) + __stop_spdifout(state); + dmabuf->enable = 0; + wake_up(&dmabuf->wait); + } + + } + if (!(status & DMA_INT_DCH)) { + ali_update_ptr(state); + wake_up(&dmabuf->wait); + if (dmabuf->enable & DAC_RUNNING) + count = dmabuf->count; + else if (dmabuf->enable & ADC_RUNNING) + count = dmabuf->dmasize - dmabuf->count; + else if (dmabuf->enable & CODEC_SPDIFOUT_RUNNING) + count = dmabuf->count; + else if (dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING) + count = dmabuf->count; + else + count = 0; + + if (count > 0) { + if (dmabuf->enable & DAC_RUNNING) + outl((1 << 1), state->card->iobase + ALI_DMACR); + else if (dmabuf->enable & CODEC_SPDIFOUT_RUNNING) + outl((1 << 3), state->card->iobase + ALI_DMACR); + else if (dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING) + outl((1 << 7), state->card->iobase + ALI_DMACR); + } else { + if (dmabuf->enable & DAC_RUNNING) + __stop_dac(state); + if (dmabuf->enable & ADC_RUNNING) + __stop_adc(state); + if (dmabuf->enable & CODEC_SPDIFOUT_RUNNING) + __stop_spdifout(state); + if (dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING) + __stop_spdifout(state); + dmabuf->enable = 0; + wake_up(&dmabuf->wait); + } + } + outw(status & DMA_INT_MASK, port + OFF_SR); + } +} + +static irqreturn_t ali_interrupt(int irq, void *dev_id, struct pt_regs *regs) +{ + struct ali_card *card = (struct ali_card *) dev_id; + u32 status; + u16 status2; + + spin_lock(&card->lock); + status = inl(card->iobase + ALI_INTERRUPTSR); + if (!(status & INT_MASK)) { + spin_unlock(&card->lock); + return IRQ_NONE; /* not for us */ + } + + if (codec_independent_spdif_locked > 0) { + if (globel == 0) { + globel += 1; + status2 = inw(card->iobase + 0x76); + outw(status2 | 0x000c, card->iobase + 0x76); + } else { + if (status & (INT_PCMOUT | INT_PCMIN | INT_MICIN | INT_SPDIFOUT | INT_CODECSPDIFOUT)) + ali_channel_interrupt(card); + } + } else { + if (status & (INT_PCMOUT | INT_PCMIN | INT_MICIN | INT_SPDIFOUT | INT_CODECSPDIFOUT)) + ali_channel_interrupt(card); + } + + /* clear 'em */ + outl(status & INT_MASK, card->iobase + ALI_INTERRUPTSR); + spin_unlock(&card->lock); + return IRQ_HANDLED; +} + +/* in this loop, dmabuf.count signifies the amount of data that is + waiting to be copied to the user's buffer. It is filled by the dma + machine and drained by this loop. */ + +static ssize_t ali_read(struct file *file, char __user *buffer, + size_t count, loff_t * ppos) +{ + struct ali_state *state = (struct ali_state *) file->private_data; + struct ali_card *card = state ? state->card : NULL; + struct dmabuf *dmabuf = &state->dmabuf; + ssize_t ret; + unsigned long flags; + unsigned int swptr; + int cnt; + DECLARE_WAITQUEUE(waita, current); +#ifdef DEBUG2 + printk("ali_audio: ali_read called, count = %d\n", count); +#endif + if (dmabuf->mapped) + return -ENXIO; + if (dmabuf->enable & DAC_RUNNING) + return -ENODEV; + if (!dmabuf->read_channel) { + dmabuf->ready = 0; + dmabuf->read_channel = card->alloc_rec_pcm_channel(card); + if (!dmabuf->read_channel) { + return -EBUSY; + } + } + if (!dmabuf->ready && (ret = prog_dmabuf(state, 1))) + return ret; + if (!access_ok(VERIFY_WRITE, buffer, count)) + return -EFAULT; + ret = 0; + add_wait_queue(&dmabuf->wait, &waita); + while (count > 0) { + set_current_state(TASK_INTERRUPTIBLE); + spin_lock_irqsave(&card->lock, flags); + if (PM_SUSPENDED(card)) { + spin_unlock_irqrestore(&card->lock, flags); + schedule(); + if (signal_pending(current)) { + if (!ret) + ret = -EAGAIN; + break; + } + continue; + } + swptr = dmabuf->swptr; + cnt = ali_get_available_read_data(state); + // this is to make the copy_to_user simpler below + if (cnt > (dmabuf->dmasize - swptr)) + cnt = dmabuf->dmasize - swptr; + spin_unlock_irqrestore(&card->lock, flags); + if (cnt > count) + cnt = count; + /* Lop off the last two bits to force the code to always + * write in full samples. This keeps software that sets + * O_NONBLOCK but doesn't check the return value of the + * write call from getting things out of state where they + * think a full 4 byte sample was written when really only + * a portion was, resulting in odd sound and stereo + * hysteresis. + */ + cnt &= ~0x3; + if (cnt <= 0) { + unsigned long tmo; + /* + * Don't let us deadlock. The ADC won't start if + * dmabuf->trigger isn't set. A call to SETTRIGGER + * could have turned it off after we set it to on + * previously. + */ + dmabuf->trigger = PCM_ENABLE_INPUT; + /* + * This does three things. Updates LVI to be correct, + * makes sure the ADC is running, and updates the + * hwptr. + */ + ali_update_lvi(state, 1); + if (file->f_flags & O_NONBLOCK) { + if (!ret) + ret = -EAGAIN; + goto done; + } + /* Set the timeout to how long it would take to fill + * two of our buffers. If we haven't been woke up + * by then, then we know something is wrong. + */ + tmo = (dmabuf->dmasize * HZ * 2) / (dmabuf->rate * 4); + + /* There are two situations when sleep_on_timeout returns, one is when + the interrupt is serviced correctly and the process is waked up by + ISR ON TIME. Another is when timeout is expired, which means that + either interrupt is NOT serviced correctly (pending interrupt) or it + is TOO LATE for the process to be scheduled to run (scheduler latency) + which results in a (potential) buffer overrun. And worse, there is + NOTHING we can do to prevent it. */ + if (!schedule_timeout(tmo >= 2 ? tmo : 2)) { + printk(KERN_ERR + "ali_audio: recording schedule timeout, " + "dmasz %u fragsz %u count %i hwptr %u swptr %u\n", + dmabuf->dmasize, dmabuf->fragsize, + dmabuf->count, dmabuf->hwptr, + dmabuf->swptr); + /* a buffer overrun, we delay the recovery until next time the + while loop begin and we REALLY have space to record */ + } + if (signal_pending(current)) { + ret = ret ? ret : -ERESTARTSYS; + goto done; + } + continue; + } + + if (copy_to_user(buffer, dmabuf->rawbuf + swptr, cnt)) { + if (!ret) + ret = -EFAULT; + goto done; + } + + swptr = (swptr + cnt) % dmabuf->dmasize; + spin_lock_irqsave(&card->lock, flags); + if (PM_SUSPENDED(card)) { + spin_unlock_irqrestore(&card->lock, flags); + continue; + } + dmabuf->swptr = swptr; + dmabuf->count -= cnt; + spin_unlock_irqrestore(&card->lock, flags); + count -= cnt; + buffer += cnt; + ret += cnt; + } +done: + ali_update_lvi(state, 1); + set_current_state(TASK_RUNNING); + remove_wait_queue(&dmabuf->wait, &waita); + return ret; +} + +/* in this loop, dmabuf.count signifies the amount of data that is waiting to be dma to + the soundcard. it is drained by the dma machine and filled by this loop. */ +static ssize_t ali_write(struct file *file, + const char __user *buffer, size_t count, loff_t * ppos) +{ + struct ali_state *state = (struct ali_state *) file->private_data; + struct ali_card *card = state ? state->card : NULL; + struct dmabuf *dmabuf = &state->dmabuf; + ssize_t ret; + unsigned long flags; + unsigned int swptr = 0; + int cnt, x; + DECLARE_WAITQUEUE(waita, current); +#ifdef DEBUG2 + printk("ali_audio: ali_write called, count = %d\n", count); +#endif + if (dmabuf->mapped) + return -ENXIO; + if (dmabuf->enable & ADC_RUNNING) + return -ENODEV; + if (codec_independent_spdif_locked > 0) { + if (!dmabuf->codec_spdifout_channel) { + dmabuf->ready = 0; + dmabuf->codec_spdifout_channel = card->alloc_codec_spdifout_channel(card); + if (!dmabuf->codec_spdifout_channel) + return -EBUSY; + } + } else { + if (controller_independent_spdif_locked > 0) { + if (!dmabuf->controller_spdifout_channel) { + dmabuf->ready = 0; + dmabuf->controller_spdifout_channel = card->alloc_controller_spdifout_channel(card); + if (!dmabuf->controller_spdifout_channel) + return -EBUSY; + } + } else { + if (!dmabuf->write_channel) { + dmabuf->ready = 0; + dmabuf->write_channel = + card->alloc_pcm_channel(card); + if (!dmabuf->write_channel) + return -EBUSY; + } + } + } + + if (codec_independent_spdif_locked > 0) { + if (!dmabuf->ready && (ret = prog_dmabuf(state, 2))) + return ret; + } else { + if (controller_independent_spdif_locked > 0) { + if (!dmabuf->ready && (ret = prog_dmabuf(state, 3))) + return ret; + } else { + + if (!dmabuf->ready && (ret = prog_dmabuf(state, 0))) + return ret; + } + } + if (!access_ok(VERIFY_READ, buffer, count)) + return -EFAULT; + ret = 0; + add_wait_queue(&dmabuf->wait, &waita); + while (count > 0) { + set_current_state(TASK_INTERRUPTIBLE); + spin_lock_irqsave(&state->card->lock, flags); + if (PM_SUSPENDED(card)) { + spin_unlock_irqrestore(&card->lock, flags); + schedule(); + if (signal_pending(current)) { + if (!ret) + ret = -EAGAIN; + break; + } + continue; + } + + swptr = dmabuf->swptr; + cnt = ali_get_free_write_space(state); + /* Bound the maximum size to how much we can copy to the + * dma buffer before we hit the end. If we have more to + * copy then it will get done in a second pass of this + * loop starting from the beginning of the buffer. + */ + if (cnt > (dmabuf->dmasize - swptr)) + cnt = dmabuf->dmasize - swptr; + spin_unlock_irqrestore(&state->card->lock, flags); +#ifdef DEBUG2 + printk(KERN_INFO + "ali_audio: ali_write: %d bytes available space\n", + cnt); +#endif + if (cnt > count) + cnt = count; + /* Lop off the last two bits to force the code to always + * write in full samples. This keeps software that sets + * O_NONBLOCK but doesn't check the return value of the + * write call from getting things out of state where they + * think a full 4 byte sample was written when really only + * a portion was, resulting in odd sound and stereo + * hysteresis. + */ + cnt &= ~0x3; + if (cnt <= 0) { + unsigned long tmo; + // There is data waiting to be played + /* + * Force the trigger setting since we would + * deadlock with it set any other way + */ + if (codec_independent_spdif_locked > 0) { + dmabuf->trigger = SPDIF_ENABLE_OUTPUT; + ali_update_lvi(state, 2); + } else { + if (controller_independent_spdif_locked > 0) { + dmabuf->trigger = SPDIF_ENABLE_OUTPUT; + ali_update_lvi(state, 3); + } else { + + dmabuf->trigger = PCM_ENABLE_OUTPUT; + ali_update_lvi(state, 0); + } + } + if (file->f_flags & O_NONBLOCK) { + if (!ret) + ret = -EAGAIN; + goto ret; + } + /* Not strictly correct but works */ + tmo = (dmabuf->dmasize * HZ * 2) / (dmabuf->rate * 4); + /* There are two situations when sleep_on_timeout returns, one is when + the interrupt is serviced correctly and the process is waked up by + ISR ON TIME. Another is when timeout is expired, which means that + either interrupt is NOT serviced correctly (pending interrupt) or it + is TOO LATE for the process to be scheduled to run (scheduler latency) + which results in a (potential) buffer underrun. And worse, there is + NOTHING we can do to prevent it. */ + + /* FIXME - do timeout handling here !! */ + schedule_timeout(tmo >= 2 ? tmo : 2); + + if (signal_pending(current)) { + if (!ret) + ret = -ERESTARTSYS; + goto ret; + } + continue; + } + if (copy_from_user(dmabuf->rawbuf + swptr, buffer, cnt)) { + if (!ret) + ret = -EFAULT; + goto ret; + } + + swptr = (swptr + cnt) % dmabuf->dmasize; + spin_lock_irqsave(&state->card->lock, flags); + if (PM_SUSPENDED(card)) { + spin_unlock_irqrestore(&card->lock, flags); + continue; + } + + dmabuf->swptr = swptr; + dmabuf->count += cnt; + count -= cnt; + buffer += cnt; + ret += cnt; + spin_unlock_irqrestore(&state->card->lock, flags); + } + if (swptr % dmabuf->fragsize) { + x = dmabuf->fragsize - (swptr % dmabuf->fragsize); + memset(dmabuf->rawbuf + swptr, '\0', x); + } +ret: + if (codec_independent_spdif_locked > 0) { + ali_update_lvi(state, 2); + } else { + if (controller_independent_spdif_locked > 0) { + ali_update_lvi(state, 3); + } else { + ali_update_lvi(state, 0); + } + } + set_current_state(TASK_RUNNING); + remove_wait_queue(&dmabuf->wait, &waita); + return ret; +} + +/* No kernel lock - we have our own spinlock */ +static unsigned int ali_poll(struct file *file, struct poll_table_struct + *wait) +{ + struct ali_state *state = (struct ali_state *) file->private_data; + struct dmabuf *dmabuf = &state->dmabuf; + unsigned long flags; + unsigned int mask = 0; + if (!dmabuf->ready) + return 0; + poll_wait(file, &dmabuf->wait, wait); + spin_lock_irqsave(&state->card->lock, flags); + ali_update_ptr(state); + if (file->f_mode & FMODE_READ && dmabuf->enable & ADC_RUNNING) { + if (dmabuf->count >= (signed) dmabuf->fragsize) + mask |= POLLIN | POLLRDNORM; + } + if (file->f_mode & FMODE_WRITE && (dmabuf->enable & (DAC_RUNNING|CODEC_SPDIFOUT_RUNNING|CONTROLLER_SPDIFOUT_RUNNING))) { + if ((signed) dmabuf->dmasize >= dmabuf->count + (signed) dmabuf->fragsize) + mask |= POLLOUT | POLLWRNORM; + } + spin_unlock_irqrestore(&state->card->lock, flags); + return mask; +} + +static int ali_mmap(struct file *file, struct vm_area_struct *vma) +{ + struct ali_state *state = (struct ali_state *) file->private_data; + struct dmabuf *dmabuf = &state->dmabuf; + int ret = -EINVAL; + unsigned long size; + lock_kernel(); + if (vma->vm_flags & VM_WRITE) { + if (!dmabuf->write_channel && (dmabuf->write_channel = state->card->alloc_pcm_channel(state->card)) == NULL) { + ret = -EBUSY; + goto out; + } + } + if (vma->vm_flags & VM_READ) { + if (!dmabuf->read_channel && (dmabuf->read_channel = state->card->alloc_rec_pcm_channel(state->card)) == NULL) { + ret = -EBUSY; + goto out; + } + } + if ((ret = prog_dmabuf(state, 0)) != 0) + goto out; + ret = -EINVAL; + if (vma->vm_pgoff != 0) + goto out; + size = vma->vm_end - vma->vm_start; + if (size > (PAGE_SIZE << dmabuf->buforder)) + goto out; + ret = -EAGAIN; + if (remap_pfn_range(vma, vma->vm_start, + virt_to_phys(dmabuf->rawbuf) >> PAGE_SHIFT, + size, vma->vm_page_prot)) + goto out; + dmabuf->mapped = 1; + dmabuf->trigger = 0; + ret = 0; +out: + unlock_kernel(); + return ret; +} + +static int ali_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) +{ + struct ali_state *state = (struct ali_state *) file->private_data; + struct ali_channel *c = NULL; + struct dmabuf *dmabuf = &state->dmabuf; + unsigned long flags; + audio_buf_info abinfo; + count_info cinfo; + unsigned int i_scr; + int val = 0, ret; + struct ac97_codec *codec = state->card->ac97_codec[0]; + void __user *argp = (void __user *)arg; + int __user *p = argp; + +#ifdef DEBUG + printk("ali_audio: ali_ioctl, arg=0x%x, cmd=", + arg ? *p : 0); +#endif + switch (cmd) { + case OSS_GETVERSION: +#ifdef DEBUG + printk("OSS_GETVERSION\n"); +#endif + return put_user(SOUND_VERSION, p); + case SNDCTL_DSP_RESET: +#ifdef DEBUG + printk("SNDCTL_DSP_RESET\n"); +#endif + spin_lock_irqsave(&state->card->lock, flags); + if (dmabuf->enable == DAC_RUNNING) { + c = dmabuf->write_channel; + __stop_dac(state); + } + if (dmabuf->enable == ADC_RUNNING) { + c = dmabuf->read_channel; + __stop_adc(state); + } + if (dmabuf->enable == CODEC_SPDIFOUT_RUNNING) { + c = dmabuf->codec_spdifout_channel; + __stop_spdifout(state); + } + if (dmabuf->enable == CONTROLLER_SPDIFOUT_RUNNING) { + c = dmabuf->controller_spdifout_channel; + __stop_spdifout(state); + } + if (c != NULL) { + outb(2, state->card->iobase + c->port + OFF_CR); /* reset DMA machine */ + outl(virt_to_bus(&c->sg[0]), + state->card->iobase + c->port + OFF_BDBAR); + outb(0, state->card->iobase + c->port + OFF_CIV); + outb(0, state->card->iobase + c->port + OFF_LVI); + } + + spin_unlock_irqrestore(&state->card->lock, flags); + synchronize_irq(state->card->pci_dev->irq); + dmabuf->ready = 0; + dmabuf->swptr = dmabuf->hwptr = 0; + dmabuf->count = dmabuf->total_bytes = 0; + return 0; + case SNDCTL_DSP_SYNC: +#ifdef DEBUG + printk("SNDCTL_DSP_SYNC\n"); +#endif + if (codec_independent_spdif_locked > 0) { + if (dmabuf->enable != CODEC_SPDIFOUT_RUNNING + || file->f_flags & O_NONBLOCK) + return 0; + if ((val = drain_spdifout(state, 1))) + return val; + } else { + if (controller_independent_spdif_locked > 0) { + if (dmabuf->enable != + CONTROLLER_SPDIFOUT_RUNNING + || file->f_flags & O_NONBLOCK) + return 0; + if ((val = drain_spdifout(state, 1))) + return val; + } else { + if (dmabuf->enable != DAC_RUNNING + || file->f_flags & O_NONBLOCK) + return 0; + if ((val = drain_dac(state, 1))) + return val; + } + } + dmabuf->total_bytes = 0; + return 0; + case SNDCTL_DSP_SPEED: /* set smaple rate */ +#ifdef DEBUG + printk("SNDCTL_DSP_SPEED\n"); +#endif + if (get_user(val, p)) + return -EFAULT; + if (val >= 0) { + if (file->f_mode & FMODE_WRITE) { + if ((state->card->ac97_status & SPDIF_ON)) { /* S/PDIF Enabled */ + /* RELTEK ALC650 only support 48000, need to check that */ + if (ali_valid_spdif_rate(codec, val)) { + if (codec_independent_spdif_locked > 0) { + ali_set_spdif_output(state, -1, 0); + stop_spdifout(state); + dmabuf->ready = 0; + /* I add test codec independent spdif out */ + spin_lock_irqsave(&state->card->lock, flags); + ali_set_codecspdifout_rate(state, val); // I modified + spin_unlock_irqrestore(&state->card->lock, flags); + /* Set S/PDIF transmitter rate. */ + i_scr = inl(state->card->iobase + ALI_SCR); + if ((i_scr & 0x00300000) == 0x00100000) { + ali_set_spdif_output(state, AC97_EA_SPSA_7_8, codec_independent_spdif_locked); + } else { + if ((i_scr&0x00300000) == 0x00200000) + { + ali_set_spdif_output(state, AC97_EA_SPSA_6_9, codec_independent_spdif_locked); + } else { + if ((i_scr & 0x00300000) == 0x00300000) { + ali_set_spdif_output(state, AC97_EA_SPSA_10_11, codec_independent_spdif_locked); + } else { + ali_set_spdif_output(state, AC97_EA_SPSA_7_8, codec_independent_spdif_locked); + } + } + } + + if (!(state->card->ac97_status & SPDIF_ON)) { + val = dmabuf->rate; + } + } else { + if (controller_independent_spdif_locked > 0) + { + stop_spdifout(state); + dmabuf->ready = 0; + spin_lock_irqsave(&state->card->lock, flags); + ali_set_spdifout_rate(state, controller_independent_spdif_locked); + spin_unlock_irqrestore(&state->card->lock, flags); + } else { + /* Set DAC rate */ + ali_set_spdif_output(state, -1, 0); + stop_dac(state); + dmabuf->ready = 0; + spin_lock_irqsave(&state->card->lock, flags); + ali_set_dac_rate(state, val); + spin_unlock_irqrestore(&state->card->lock, flags); + /* Set S/PDIF transmitter rate. */ + ali_set_spdif_output(state, AC97_EA_SPSA_3_4, val); + if (!(state->card->ac97_status & SPDIF_ON)) + { + val = dmabuf->rate; + } + } + } + } else { /* Not a valid rate for S/PDIF, ignore it */ + val = dmabuf->rate; + } + } else { + stop_dac(state); + dmabuf->ready = 0; + spin_lock_irqsave(&state->card->lock, flags); + ali_set_dac_rate(state, val); + spin_unlock_irqrestore(&state->card->lock, flags); + } + } + if (file->f_mode & FMODE_READ) { + stop_adc(state); + dmabuf->ready = 0; + spin_lock_irqsave(&state->card->lock, flags); + ali_set_adc_rate(state, val); + spin_unlock_irqrestore(&state->card->lock, flags); + } + } + return put_user(dmabuf->rate, p); + case SNDCTL_DSP_STEREO: /* set stereo or mono channel */ +#ifdef DEBUG + printk("SNDCTL_DSP_STEREO\n"); +#endif + if (dmabuf->enable & DAC_RUNNING) { + stop_dac(state); + } + if (dmabuf->enable & ADC_RUNNING) { + stop_adc(state); + } + if (dmabuf->enable & CODEC_SPDIFOUT_RUNNING) { + stop_spdifout(state); + } + if (dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING) { + stop_spdifout(state); + } + return put_user(1, p); + case SNDCTL_DSP_GETBLKSIZE: + if (file->f_mode & FMODE_WRITE) { + if (codec_independent_spdif_locked > 0) { + if (!dmabuf->ready && (val = prog_dmabuf(state, 2))) + return val; + } else { + if (controller_independent_spdif_locked > 0) { + if (!dmabuf->ready && (val = prog_dmabuf(state, 3))) + return val; + } else { + if (!dmabuf->ready && (val = prog_dmabuf(state, 0))) + return val; + } + } + } + + if (file->f_mode & FMODE_READ) { + if (!dmabuf->ready && (val = prog_dmabuf(state, 1))) + return val; + } +#ifdef DEBUG + printk("SNDCTL_DSP_GETBLKSIZE %d\n", dmabuf->userfragsize); +#endif + return put_user(dmabuf->userfragsize, p); + case SNDCTL_DSP_GETFMTS: /* Returns a mask of supported sample format */ +#ifdef DEBUG + printk("SNDCTL_DSP_GETFMTS\n"); +#endif + return put_user(AFMT_S16_LE, p); + case SNDCTL_DSP_SETFMT: /* Select sample format */ +#ifdef DEBUG + printk("SNDCTL_DSP_SETFMT\n"); +#endif + return put_user(AFMT_S16_LE, p); + case SNDCTL_DSP_CHANNELS: // add support 4,6 channel +#ifdef DEBUG + printk("SNDCTL_DSP_CHANNELS\n"); +#endif + if (get_user(val, p)) + return -EFAULT; + if (val > 0) { + if (dmabuf->enable & DAC_RUNNING) { + stop_dac(state); + } + if (dmabuf->enable & CODEC_SPDIFOUT_RUNNING) { + stop_spdifout(state); + } + if (dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING) { + stop_spdifout(state); + } + if (dmabuf->enable & ADC_RUNNING) { + stop_adc(state); + } + } else { + return put_user(state->card->channels, p); + } + + i_scr = inl(state->card->iobase + ALI_SCR); + /* Current # of channels enabled */ + if (i_scr & 0x00000100) + ret = 4; + else if (i_scr & 0x00000200) + ret = 6; + else + ret = 2; + switch (val) { + case 2: /* 2 channels is always supported */ + if (codec_independent_spdif_locked > 0) { + outl(((i_scr & 0xfffffcff) | 0x00100000), (state->card->iobase + ALI_SCR)); + } else + outl((i_scr & 0xfffffcff), (state->card->iobase + ALI_SCR)); + /* Do we need to change mixer settings???? */ + break; + case 4: /* Supported on some chipsets, better check first */ + if (codec_independent_spdif_locked > 0) { + outl(((i_scr & 0xfffffcff) | 0x00000100 | 0x00200000), (state->card->iobase + ALI_SCR)); + } else + outl(((i_scr & 0xfffffcff) | 0x00000100), (state->card->iobase + ALI_SCR)); + break; + case 6: /* Supported on some chipsets, better check first */ + if (codec_independent_spdif_locked > 0) { + outl(((i_scr & 0xfffffcff) | 0x00000200 | 0x00008000 | 0x00300000), (state->card->iobase + ALI_SCR)); + } else + outl(((i_scr & 0xfffffcff) | 0x00000200 | 0x00008000), (state->card->iobase + ALI_SCR)); + break; + default: /* nothing else is ever supported by the chipset */ + val = ret; + break; + } + return put_user(val, p); + case SNDCTL_DSP_POST: /* the user has sent all data and is notifying us */ + /* we update the swptr to the end of the last sg segment then return */ +#ifdef DEBUG + printk("SNDCTL_DSP_POST\n"); +#endif + if (codec_independent_spdif_locked > 0) { + if (!dmabuf->ready || (dmabuf->enable != CODEC_SPDIFOUT_RUNNING)) + return 0; + } else { + if (controller_independent_spdif_locked > 0) { + if (!dmabuf->ready || (dmabuf->enable != CONTROLLER_SPDIFOUT_RUNNING)) + return 0; + } else { + if (!dmabuf->ready || (dmabuf->enable != DAC_RUNNING)) + return 0; + } + } + if ((dmabuf->swptr % dmabuf->fragsize) != 0) { + val = dmabuf->fragsize - (dmabuf->swptr % dmabuf->fragsize); + dmabuf->swptr += val; + dmabuf->count += val; + } + return 0; + case SNDCTL_DSP_SUBDIVIDE: + if (dmabuf->subdivision) + return -EINVAL; + if (get_user(val, p)) + return -EFAULT; + if (val != 1 && val != 2 && val != 4) + return -EINVAL; +#ifdef DEBUG + printk("SNDCTL_DSP_SUBDIVIDE %d\n", val); +#endif + dmabuf->subdivision = val; + dmabuf->ready = 0; + return 0; + case SNDCTL_DSP_SETFRAGMENT: + if (get_user(val, p)) + return -EFAULT; + dmabuf->ossfragsize = 1 << (val & 0xffff); + dmabuf->ossmaxfrags = (val >> 16) & 0xffff; + if (!dmabuf->ossfragsize || !dmabuf->ossmaxfrags) + return -EINVAL; + /* + * Bound the frag size into our allowed range of 256 - 4096 + */ + if (dmabuf->ossfragsize < 256) + dmabuf->ossfragsize = 256; + else if (dmabuf->ossfragsize > 4096) + dmabuf->ossfragsize = 4096; + /* + * The numfrags could be something reasonable, or it could + * be 0xffff meaning "Give me as much as possible". So, + * we check the numfrags * fragsize doesn't exceed our + * 64k buffer limit, nor is it less than our 8k minimum. + * If it fails either one of these checks, then adjust the + * number of fragments, not the size of them. It's OK if + * our number of fragments doesn't equal 32 or anything + * like our hardware based number now since we are using + * a different frag count for the hardware. Before we get + * into this though, bound the maxfrags to avoid overflow + * issues. A reasonable bound would be 64k / 256 since our + * maximum buffer size is 64k and our minimum frag size is + * 256. On the other end, our minimum buffer size is 8k and + * our maximum frag size is 4k, so the lower bound should + * be 2. + */ + if (dmabuf->ossmaxfrags > 256) + dmabuf->ossmaxfrags = 256; + else if (dmabuf->ossmaxfrags < 2) + dmabuf->ossmaxfrags = 2; + val = dmabuf->ossfragsize * dmabuf->ossmaxfrags; + while (val < 8192) { + val <<= 1; + dmabuf->ossmaxfrags <<= 1; + } + while (val > 65536) { + val >>= 1; + dmabuf->ossmaxfrags >>= 1; + } + dmabuf->ready = 0; +#ifdef DEBUG + printk("SNDCTL_DSP_SETFRAGMENT 0x%x, %d, %d\n", val, + dmabuf->ossfragsize, dmabuf->ossmaxfrags); +#endif + return 0; + case SNDCTL_DSP_GETOSPACE: + if (!(file->f_mode & FMODE_WRITE)) + return -EINVAL; + if (codec_independent_spdif_locked > 0) { + if (!dmabuf->ready && (val = prog_dmabuf(state, 2)) != 0) + return val; + } else { + if (controller_independent_spdif_locked > 0) { + if (!dmabuf->ready && (val = prog_dmabuf(state, 3)) != 0) + return val; + } else { + if (!dmabuf->ready && (val = prog_dmabuf(state, 0)) != 0) + return val; + } + } + spin_lock_irqsave(&state->card->lock, flags); + ali_update_ptr(state); + abinfo.fragsize = dmabuf->userfragsize; + abinfo.fragstotal = dmabuf->userfrags; + if (dmabuf->mapped) + abinfo.bytes = dmabuf->dmasize; + else + abinfo.bytes = ali_get_free_write_space(state); + abinfo.fragments = abinfo.bytes / dmabuf->userfragsize; + spin_unlock_irqrestore(&state->card->lock, flags); +#if defined(DEBUG) || defined(DEBUG_MMAP) + printk("SNDCTL_DSP_GETOSPACE %d, %d, %d, %d\n", + abinfo.bytes, abinfo.fragsize, abinfo.fragments, + abinfo.fragstotal); +#endif + return copy_to_user(argp, &abinfo, + sizeof(abinfo)) ? -EFAULT : 0; + case SNDCTL_DSP_GETOPTR: + if (!(file->f_mode & FMODE_WRITE)) + return -EINVAL; + if (codec_independent_spdif_locked > 0) { + if (!dmabuf->ready && (val = prog_dmabuf(state, 2)) != 0) + return val; + } else { + if (controller_independent_spdif_locked > 0) { + if (!dmabuf->ready && (val = prog_dmabuf(state, 3)) != 0) + return val; + } else { + if (!dmabuf->ready && (val = prog_dmabuf(state, 0)) != 0) + return val; + } + } + spin_lock_irqsave(&state->card->lock, flags); + val = ali_get_free_write_space(state); + cinfo.bytes = dmabuf->total_bytes; + cinfo.ptr = dmabuf->hwptr; + cinfo.blocks = val / dmabuf->userfragsize; + if (codec_independent_spdif_locked > 0) { + if (dmabuf->mapped && (dmabuf->trigger & SPDIF_ENABLE_OUTPUT)) { + dmabuf->count += val; + dmabuf->swptr = (dmabuf->swptr + val) % dmabuf->dmasize; + __ali_update_lvi(state, 2); + } + } else { + if (controller_independent_spdif_locked > 0) { + if (dmabuf->mapped && (dmabuf->trigger & SPDIF_ENABLE_OUTPUT)) { + dmabuf->count += val; + dmabuf->swptr = (dmabuf->swptr + val) % dmabuf->dmasize; + __ali_update_lvi(state, 3); + } + } else { + if (dmabuf->mapped && (dmabuf->trigger & PCM_ENABLE_OUTPUT)) { + dmabuf->count += val; + dmabuf->swptr = (dmabuf->swptr + val) % dmabuf->dmasize; + __ali_update_lvi(state, 0); + } + } + } + spin_unlock_irqrestore(&state->card->lock, flags); +#if defined(DEBUG) || defined(DEBUG_MMAP) + printk("SNDCTL_DSP_GETOPTR %d, %d, %d, %d\n", cinfo.bytes, + cinfo.blocks, cinfo.ptr, dmabuf->count); +#endif + return copy_to_user(argp, &cinfo, sizeof(cinfo))? -EFAULT : 0; + case SNDCTL_DSP_GETISPACE: + if (!(file->f_mode & FMODE_READ)) + return -EINVAL; + if (!dmabuf->ready && (val = prog_dmabuf(state, 1)) != 0) + return val; + spin_lock_irqsave(&state->card->lock, flags); + abinfo.bytes = ali_get_available_read_data(state); + abinfo.fragsize = dmabuf->userfragsize; + abinfo.fragstotal = dmabuf->userfrags; + abinfo.fragments = abinfo.bytes / dmabuf->userfragsize; + spin_unlock_irqrestore(&state->card->lock, flags); +#if defined(DEBUG) || defined(DEBUG_MMAP) + printk("SNDCTL_DSP_GETISPACE %d, %d, %d, %d\n", + abinfo.bytes, abinfo.fragsize, abinfo.fragments, + abinfo.fragstotal); +#endif + return copy_to_user(argp, &abinfo, + sizeof(abinfo)) ? -EFAULT : 0; + case SNDCTL_DSP_GETIPTR: + if (!(file->f_mode & FMODE_READ)) + return -EINVAL; + if (!dmabuf->ready && (val = prog_dmabuf(state, 0)) != 0) + return val; + spin_lock_irqsave(&state->card->lock, flags); + val = ali_get_available_read_data(state); + cinfo.bytes = dmabuf->total_bytes; + cinfo.blocks = val / dmabuf->userfragsize; + cinfo.ptr = dmabuf->hwptr; + if (dmabuf->mapped && (dmabuf->trigger & PCM_ENABLE_INPUT)) { + dmabuf->count -= val; + dmabuf->swptr = (dmabuf->swptr + val) % dmabuf->dmasize; + __ali_update_lvi(state, 1); + } + spin_unlock_irqrestore(&state->card->lock, flags); +#if defined(DEBUG) || defined(DEBUG_MMAP) + printk("SNDCTL_DSP_GETIPTR %d, %d, %d, %d\n", cinfo.bytes, + cinfo.blocks, cinfo.ptr, dmabuf->count); +#endif + return copy_to_user(argp, &cinfo, sizeof(cinfo))? -EFAULT: 0; + case SNDCTL_DSP_NONBLOCK: +#ifdef DEBUG + printk("SNDCTL_DSP_NONBLOCK\n"); +#endif + file->f_flags |= O_NONBLOCK; + return 0; + case SNDCTL_DSP_GETCAPS: +#ifdef DEBUG + printk("SNDCTL_DSP_GETCAPS\n"); +#endif + return put_user(DSP_CAP_REALTIME | DSP_CAP_TRIGGER | + DSP_CAP_MMAP | DSP_CAP_BIND, p); + case SNDCTL_DSP_GETTRIGGER: + val = 0; +#ifdef DEBUG + printk("SNDCTL_DSP_GETTRIGGER 0x%x\n", dmabuf->trigger); +#endif + return put_user(dmabuf->trigger, p); + case SNDCTL_DSP_SETTRIGGER: + if (get_user(val, p)) + return -EFAULT; +#if defined(DEBUG) || defined(DEBUG_MMAP) + printk("SNDCTL_DSP_SETTRIGGER 0x%x\n", val); +#endif + if (!(val & PCM_ENABLE_INPUT) && dmabuf->enable == ADC_RUNNING) { + stop_adc(state); + } + if (!(val & PCM_ENABLE_OUTPUT) && dmabuf->enable == DAC_RUNNING) { + stop_dac(state); + } + if (!(val & SPDIF_ENABLE_OUTPUT) && dmabuf->enable == CODEC_SPDIFOUT_RUNNING) { + stop_spdifout(state); + } + if (!(val & SPDIF_ENABLE_OUTPUT) && dmabuf->enable == CONTROLLER_SPDIFOUT_RUNNING) { + stop_spdifout(state); + } + dmabuf->trigger = val; + if (val & PCM_ENABLE_OUTPUT && !(dmabuf->enable & DAC_RUNNING)) { + if (!dmabuf->write_channel) { + dmabuf->ready = 0; + dmabuf->write_channel = state->card->alloc_pcm_channel(state->card); + if (!dmabuf->write_channel) + return -EBUSY; + } + if (!dmabuf->ready && (ret = prog_dmabuf(state, 0))) + return ret; + if (dmabuf->mapped) { + spin_lock_irqsave(&state->card->lock, flags); + ali_update_ptr(state); + dmabuf->count = 0; + dmabuf->swptr = dmabuf->hwptr; + dmabuf->count = ali_get_free_write_space(state); + dmabuf->swptr = (dmabuf->swptr + dmabuf->count) % dmabuf->dmasize; + __ali_update_lvi(state, 0); + spin_unlock_irqrestore(&state->card->lock, + flags); + } else + start_dac(state); + } + if (val & SPDIF_ENABLE_OUTPUT && !(dmabuf->enable & CODEC_SPDIFOUT_RUNNING)) { + if (!dmabuf->codec_spdifout_channel) { + dmabuf->ready = 0; + dmabuf->codec_spdifout_channel = state->card->alloc_codec_spdifout_channel(state->card); + if (!dmabuf->codec_spdifout_channel) + return -EBUSY; + } + if (!dmabuf->ready && (ret = prog_dmabuf(state, 2))) + return ret; + if (dmabuf->mapped) { + spin_lock_irqsave(&state->card->lock, flags); + ali_update_ptr(state); + dmabuf->count = 0; + dmabuf->swptr = dmabuf->hwptr; + dmabuf->count = ali_get_free_write_space(state); + dmabuf->swptr = (dmabuf->swptr + dmabuf->count) % dmabuf->dmasize; + __ali_update_lvi(state, 2); + spin_unlock_irqrestore(&state->card->lock, + flags); + } else + start_spdifout(state); + } + if (val & SPDIF_ENABLE_OUTPUT && !(dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING)) { + if (!dmabuf->controller_spdifout_channel) { + dmabuf->ready = 0; + dmabuf->controller_spdifout_channel = state->card->alloc_controller_spdifout_channel(state->card); + if (!dmabuf->controller_spdifout_channel) + return -EBUSY; + } + if (!dmabuf->ready && (ret = prog_dmabuf(state, 3))) + return ret; + if (dmabuf->mapped) { + spin_lock_irqsave(&state->card->lock, flags); + ali_update_ptr(state); + dmabuf->count = 0; + dmabuf->swptr = dmabuf->hwptr; + dmabuf->count = ali_get_free_write_space(state); + dmabuf->swptr = (dmabuf->swptr + dmabuf->count) % dmabuf->dmasize; + __ali_update_lvi(state, 3); + spin_unlock_irqrestore(&state->card->lock, flags); + } else + start_spdifout(state); + } + if (val & PCM_ENABLE_INPUT && !(dmabuf->enable & ADC_RUNNING)) { + if (!dmabuf->read_channel) { + dmabuf->ready = 0; + dmabuf->read_channel = state->card->alloc_rec_pcm_channel(state->card); + if (!dmabuf->read_channel) + return -EBUSY; + } + if (!dmabuf->ready && (ret = prog_dmabuf(state, 1))) + return ret; + if (dmabuf->mapped) { + spin_lock_irqsave(&state->card->lock, + flags); + ali_update_ptr(state); + dmabuf->swptr = dmabuf->hwptr; + dmabuf->count = 0; + spin_unlock_irqrestore(&state->card->lock, flags); + } + ali_update_lvi(state, 1); + start_adc(state); + } + return 0; + case SNDCTL_DSP_SETDUPLEX: +#ifdef DEBUG + printk("SNDCTL_DSP_SETDUPLEX\n"); +#endif + return -EINVAL; + case SNDCTL_DSP_GETODELAY: + if (!(file->f_mode & FMODE_WRITE)) + return -EINVAL; + spin_lock_irqsave(&state->card->lock, flags); + ali_update_ptr(state); + val = dmabuf->count; + spin_unlock_irqrestore(&state->card->lock, flags); +#ifdef DEBUG + printk("SNDCTL_DSP_GETODELAY %d\n", dmabuf->count); +#endif + return put_user(val, p); + case SOUND_PCM_READ_RATE: +#ifdef DEBUG + printk("SOUND_PCM_READ_RATE %d\n", dmabuf->rate); +#endif + return put_user(dmabuf->rate, p); + case SOUND_PCM_READ_CHANNELS: +#ifdef DEBUG + printk("SOUND_PCM_READ_CHANNELS\n"); +#endif + return put_user(2, p); + case SOUND_PCM_READ_BITS: +#ifdef DEBUG + printk("SOUND_PCM_READ_BITS\n"); +#endif + return put_user(AFMT_S16_LE, p); + case SNDCTL_DSP_SETSPDIF: /* Set S/PDIF Control register */ +#ifdef DEBUG + printk("SNDCTL_DSP_SETSPDIF\n"); +#endif + if (get_user(val, p)) + return -EFAULT; + /* Check to make sure the codec supports S/PDIF transmitter */ + if ((state->card->ac97_features & 4)) { + /* mask out the transmitter speed bits so the user can't set them */ + val &= ~0x3000; + /* Add the current transmitter speed bits to the passed value */ + ret = ali_ac97_get(codec, AC97_SPDIF_CONTROL); + val |= (ret & 0x3000); + ali_ac97_set(codec, AC97_SPDIF_CONTROL, val); + if (ali_ac97_get(codec, AC97_SPDIF_CONTROL) != val) { + printk(KERN_ERR "ali_audio: Unable to set S/PDIF configuration to 0x%04x.\n", val); + return -EFAULT; + } + } +#ifdef DEBUG + else + printk(KERN_WARNING "ali_audio: S/PDIF transmitter not avalible.\n"); +#endif + return put_user(val, p); + case SNDCTL_DSP_GETSPDIF: /* Get S/PDIF Control register */ +#ifdef DEBUG + printk("SNDCTL_DSP_GETSPDIF\n"); +#endif + if (get_user(val, p)) + return -EFAULT; + /* Check to make sure the codec supports S/PDIF transmitter */ + if (!(state->card->ac97_features & 4)) { +#ifdef DEBUG + printk(KERN_WARNING "ali_audio: S/PDIF transmitter not avalible.\n"); +#endif + val = 0; + } else { + val = ali_ac97_get(codec, AC97_SPDIF_CONTROL); + } + + return put_user(val, p); +//end add support spdif out +//add support 4,6 channel + case SNDCTL_DSP_GETCHANNELMASK: +#ifdef DEBUG + printk("SNDCTL_DSP_GETCHANNELMASK\n"); +#endif + if (get_user(val, p)) + return -EFAULT; + /* Based on AC'97 DAC support, not ICH hardware */ + val = DSP_BIND_FRONT; + if (state->card->ac97_features & 0x0004) + val |= DSP_BIND_SPDIF; + if (state->card->ac97_features & 0x0080) + val |= DSP_BIND_SURR; + if (state->card->ac97_features & 0x0140) + val |= DSP_BIND_CENTER_LFE; + return put_user(val, p); + case SNDCTL_DSP_BIND_CHANNEL: +#ifdef DEBUG + printk("SNDCTL_DSP_BIND_CHANNEL\n"); +#endif + if (get_user(val, p)) + return -EFAULT; + if (val == DSP_BIND_QUERY) { + val = DSP_BIND_FRONT; /* Always report this as being enabled */ + if (state->card->ac97_status & SPDIF_ON) + val |= DSP_BIND_SPDIF; + else { + if (state->card->ac97_status & SURR_ON) + val |= DSP_BIND_SURR; + if (state->card-> + ac97_status & CENTER_LFE_ON) + val |= DSP_BIND_CENTER_LFE; + } + } else { /* Not a query, set it */ + if (!(file->f_mode & FMODE_WRITE)) + return -EINVAL; + if (dmabuf->enable == DAC_RUNNING) { + stop_dac(state); + } + if (val & DSP_BIND_SPDIF) { /* Turn on SPDIF */ + /* Ok, this should probably define what slots + * to use. For now, we'll only set it to the + * defaults: + * + * non multichannel codec maps to slots 3&4 + * 2 channel codec maps to slots 7&8 + * 4 channel codec maps to slots 6&9 + * 6 channel codec maps to slots 10&11 + * + * there should be some way for the app to + * select the slot assignment. + */ + i_scr = inl(state->card->iobase + ALI_SCR); + if (codec_independent_spdif_locked > 0) { + + if ((i_scr & 0x00300000) == 0x00100000) { + ali_set_spdif_output(state, AC97_EA_SPSA_7_8, codec_independent_spdif_locked); + } else { + if ((i_scr & 0x00300000) == 0x00200000) { + ali_set_spdif_output(state, AC97_EA_SPSA_6_9, codec_independent_spdif_locked); + } else { + if ((i_scr & 0x00300000) == 0x00300000) { + ali_set_spdif_output(state, AC97_EA_SPSA_10_11, codec_independent_spdif_locked); + } + } + } + } else { /* codec spdif out (pcm out share ) */ + ali_set_spdif_output(state, AC97_EA_SPSA_3_4, dmabuf->rate); //I do not modify + } + + if (!(state->card->ac97_status & SPDIF_ON)) + val &= ~DSP_BIND_SPDIF; + } else { + int mask; + int channels; + /* Turn off S/PDIF if it was on */ + if (state->card->ac97_status & SPDIF_ON) + ali_set_spdif_output(state, -1, 0); + mask = + val & (DSP_BIND_FRONT | DSP_BIND_SURR | + DSP_BIND_CENTER_LFE); + switch (mask) { + case DSP_BIND_FRONT: + channels = 2; + break; + case DSP_BIND_FRONT | DSP_BIND_SURR: + channels = 4; + break; + case DSP_BIND_FRONT | DSP_BIND_SURR | DSP_BIND_CENTER_LFE: + channels = 6; + break; + default: + val = DSP_BIND_FRONT; + channels = 2; + break; + } + ali_set_dac_channels(state, channels); + /* check that they really got turned on */ + if (!state->card->ac97_status & SURR_ON) + val &= ~DSP_BIND_SURR; + if (!state->card-> + ac97_status & CENTER_LFE_ON) + val &= ~DSP_BIND_CENTER_LFE; + } + } + return put_user(val, p); + case SNDCTL_DSP_MAPINBUF: + case SNDCTL_DSP_MAPOUTBUF: + case SNDCTL_DSP_SETSYNCRO: + case SOUND_PCM_WRITE_FILTER: + case SOUND_PCM_READ_FILTER: + return -EINVAL; + } + return -EINVAL; +} + +static int ali_open(struct inode *inode, struct file *file) +{ + int i = 0; + struct ali_card *card = devs; + struct ali_state *state = NULL; + struct dmabuf *dmabuf = NULL; + unsigned int i_scr; + + /* find an available virtual channel (instance of /dev/dsp) */ + + while (card != NULL) { + + /* + * If we are initializing and then fail, card could go + * away unuexpectedly while we are in the for() loop. + * So, check for card on each iteration before we check + * for card->initializing to avoid a possible oops. + * This usually only matters for times when the driver is + * autoloaded by kmod. + */ + for (i = 0; i < 50 && card && card->initializing; i++) { + set_current_state(TASK_UNINTERRUPTIBLE); + schedule_timeout(HZ / 20); + } + + for (i = 0; i < NR_HW_CH && card && !card->initializing; i++) { + if (card->states[i] == NULL) { + state = card->states[i] = (struct ali_state *) kmalloc(sizeof(struct ali_state), GFP_KERNEL); + if (state == NULL) + return -ENOMEM; + memset(state, 0, sizeof(struct ali_state)); + dmabuf = &state->dmabuf; + goto found_virt; + } + } + card = card->next; + } + + /* no more virtual channel avaiable */ + if (!state) + return -ENODEV; +found_virt: + /* initialize the virtual channel */ + + state->virt = i; + state->card = card; + state->magic = ALI5455_STATE_MAGIC; + init_waitqueue_head(&dmabuf->wait); + init_MUTEX(&state->open_sem); + file->private_data = state; + dmabuf->trigger = 0; + /* allocate hardware channels */ + if (file->f_mode & FMODE_READ) { + if ((dmabuf->read_channel = + card->alloc_rec_pcm_channel(card)) == NULL) { + kfree(card->states[i]); + card->states[i] = NULL; + return -EBUSY; + } + dmabuf->trigger |= PCM_ENABLE_INPUT; + ali_set_adc_rate(state, 8000); + } + if (file->f_mode & FMODE_WRITE) { + if (codec_independent_spdif_locked > 0) { + if ((dmabuf->codec_spdifout_channel = card->alloc_codec_spdifout_channel(card)) == NULL) { + kfree(card->states[i]); + card->states[i] = NULL; + return -EBUSY; + } + dmabuf->trigger |= SPDIF_ENABLE_OUTPUT; + ali_set_codecspdifout_rate(state, codec_independent_spdif_locked); //It must add + i_scr = inl(state->card->iobase + ALI_SCR); + if ((i_scr & 0x00300000) == 0x00100000) { + ali_set_spdif_output(state, AC97_EA_SPSA_7_8, codec_independent_spdif_locked); + } else { + if ((i_scr & 0x00300000) == 0x00200000) { + ali_set_spdif_output(state, AC97_EA_SPSA_6_9, codec_independent_spdif_locked); + } else { + if ((i_scr & 0x00300000) == 0x00300000) { + ali_set_spdif_output(state, AC97_EA_SPSA_10_11, codec_independent_spdif_locked); + } else { + ali_set_spdif_output(state, AC97_EA_SPSA_7_8, codec_independent_spdif_locked); + } + } + + } + } else { + if (controller_independent_spdif_locked > 0) { + if ((dmabuf->controller_spdifout_channel = card->alloc_controller_spdifout_channel(card)) == NULL) { + kfree(card->states[i]); + card->states[i] = NULL; + return -EBUSY; + } + dmabuf->trigger |= SPDIF_ENABLE_OUTPUT; + ali_set_spdifout_rate(state, controller_independent_spdif_locked); + } else { + if ((dmabuf->write_channel = card->alloc_pcm_channel(card)) == NULL) { + kfree(card->states[i]); + card->states[i] = NULL; + return -EBUSY; + } + /* Initialize to 8kHz? What if we don't support 8kHz? */ + /* Let's change this to check for S/PDIF stuff */ + + dmabuf->trigger |= PCM_ENABLE_OUTPUT; + if (codec_pcmout_share_spdif_locked) { + ali_set_dac_rate(state, codec_pcmout_share_spdif_locked); + ali_set_spdif_output(state, AC97_EA_SPSA_3_4, codec_pcmout_share_spdif_locked); + } else { + ali_set_dac_rate(state, 8000); + } + } + + } + } + + /* set default sample format. According to OSS Programmer's Guide /dev/dsp + should be default to unsigned 8-bits, mono, with sample rate 8kHz and + /dev/dspW will accept 16-bits sample, but we don't support those so we + set it immediately to stereo and 16bit, which is all we do support */ + dmabuf->fmt |= ALI5455_FMT_16BIT | ALI5455_FMT_STEREO; + dmabuf->ossfragsize = 0; + dmabuf->ossmaxfrags = 0; + dmabuf->subdivision = 0; + state->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE); + outl(0x00000000, card->iobase + ALI_INTERRUPTCR); + outl(0x00000000, card->iobase + ALI_INTERRUPTSR); + return nonseekable_open(inode, file); +} + +static int ali_release(struct inode *inode, struct file *file) +{ + struct ali_state *state = (struct ali_state *) file->private_data; + struct ali_card *card = state->card; + struct dmabuf *dmabuf = &state->dmabuf; + unsigned long flags; + lock_kernel(); + + /* stop DMA state machine and free DMA buffers/channels */ + if (dmabuf->trigger & PCM_ENABLE_OUTPUT) + drain_dac(state, 0); + + if (dmabuf->trigger & SPDIF_ENABLE_OUTPUT) + drain_spdifout(state, 0); + + if (dmabuf->trigger & PCM_ENABLE_INPUT) + stop_adc(state); + + spin_lock_irqsave(&card->lock, flags); + dealloc_dmabuf(state); + if (file->f_mode & FMODE_WRITE) { + if (codec_independent_spdif_locked > 0) { + state->card->free_pcm_channel(state->card, dmabuf->codec_spdifout_channel->num); + } else { + if (controller_independent_spdif_locked > 0) + state->card->free_pcm_channel(state->card, + dmabuf->controller_spdifout_channel->num); + else state->card->free_pcm_channel(state->card, + dmabuf->write_channel->num); + } + } + if (file->f_mode & FMODE_READ) + state->card->free_pcm_channel(state->card, dmabuf->read_channel->num); + + state->card->states[state->virt] = NULL; + kfree(state); + spin_unlock_irqrestore(&card->lock, flags); + unlock_kernel(); + return 0; +} + +static /*const */ struct file_operations ali_audio_fops = { + .owner = THIS_MODULE, + .llseek = no_llseek, + .read = ali_read, + .write = ali_write, + .poll = ali_poll, + .ioctl = ali_ioctl, + .mmap = ali_mmap, + .open = ali_open, + .release = ali_release, +}; + +/* Read AC97 codec registers */ +static u16 ali_ac97_get(struct ac97_codec *dev, u8 reg) +{ + struct ali_card *card = dev->private_data; + int count1 = 100; + char val; + unsigned short int data = 0, count, addr1, addr2 = 0; + + spin_lock(&card->ac97_lock); + while (count1-- && (inl(card->iobase + ALI_CAS) & 0x80000000)) + udelay(1); + + addr1 = reg; + reg |= 0x0080; + for (count = 0; count < 0x7f; count++) { + val = inb(card->iobase + ALI_CSPSR); + if (val & 0x08) + break; + } + if (count == 0x7f) + { + spin_unlock(&card->ac97_lock); + return -1; + } + outw(reg, (card->iobase + ALI_CPR) + 2); + for (count = 0; count < 0x7f; count++) { + val = inb(card->iobase + ALI_CSPSR); + if (val & 0x02) { + data = inw(card->iobase + ALI_SPR); + addr2 = inw((card->iobase + ALI_SPR) + 2); + break; + } + } + spin_unlock(&card->ac97_lock); + if (count == 0x7f) + return -1; + if (addr2 != addr1) + return -1; + return ((u16) data); +} + +/* write ac97 codec register */ + +static void ali_ac97_set(struct ac97_codec *dev, u8 reg, u16 data) +{ + struct ali_card *card = dev->private_data; + int count1 = 100; + char val; + unsigned short int count; + + spin_lock(&card->ac97_lock); + while (count1-- && (inl(card->iobase + ALI_CAS) & 0x80000000)) + udelay(1); + + for (count = 0; count < 0x7f; count++) { + val = inb(card->iobase + ALI_CSPSR); + if (val & 0x08) + break; + } + if (count == 0x7f) { + printk(KERN_WARNING "ali_ac97_set: AC97 codec register access timed out. \n"); + spin_unlock(&card->ac97_lock); + return; + } + outw(data, (card->iobase + ALI_CPR)); + outb(reg, (card->iobase + ALI_CPR) + 2); + for (count = 0; count < 0x7f; count++) { + val = inb(card->iobase + ALI_CSPSR); + if (val & 0x01) + break; + } + spin_unlock(&card->ac97_lock); + if (count == 0x7f) + printk(KERN_WARNING "ali_ac97_set: AC97 codec register access timed out. \n"); + return; +} + +/* OSS /dev/mixer file operation methods */ + +static int ali_open_mixdev(struct inode *inode, struct file *file) +{ + int i; + int minor = iminor(inode); + struct ali_card *card = devs; + for (card = devs; card != NULL; card = card->next) { + /* + * If we are initializing and then fail, card could go + * away unuexpectedly while we are in the for() loop. + * So, check for card on each iteration before we check + * for card->initializing to avoid a possible oops. + * This usually only matters for times when the driver is + * autoloaded by kmod. + */ + for (i = 0; i < 50 && card && card->initializing; i++) { + set_current_state(TASK_UNINTERRUPTIBLE); + schedule_timeout(HZ / 20); + } + for (i = 0; i < NR_AC97 && card && !card->initializing; i++) + if (card->ac97_codec[i] != NULL + && card->ac97_codec[i]->dev_mixer == minor) { + file->private_data = card->ac97_codec[i]; + return nonseekable_open(inode, file); + } + } + return -ENODEV; +} + +static int ali_ioctl_mixdev(struct inode *inode, + struct file *file, + unsigned int cmd, unsigned long arg) +{ + struct ac97_codec *codec = (struct ac97_codec *) file->private_data; + return codec->mixer_ioctl(codec, cmd, arg); +} + +static /*const */ struct file_operations ali_mixer_fops = { + .owner = THIS_MODULE, + .llseek = no_llseek, + .ioctl = ali_ioctl_mixdev, + .open = ali_open_mixdev, +}; + +/* AC97 codec initialisation. These small functions exist so we don't + duplicate code between module init and apm resume */ + +static inline int ali_ac97_exists(struct ali_card *card, int ac97_number) +{ + unsigned int i = 1; + u32 reg = inl(card->iobase + ALI_RTSR); + if (ac97_number) { + while (i < 100) { + + reg = inl(card->iobase + ALI_RTSR); + if (reg & 0x40) { + break; + } else { + outl(reg | 0x00000040, + card->iobase + 0x34); + udelay(1); + } + i++; + } + + } else { + while (i < 100) { + reg = inl(card->iobase + ALI_RTSR); + if (reg & 0x80) { + break; + } else { + outl(reg | 0x00000080, + card->iobase + 0x34); + udelay(1); + } + i++; + } + } + + if (ac97_number) + return reg & 0x40; + else + return reg & 0x80; +} + +static inline int ali_ac97_enable_variable_rate(struct ac97_codec *codec) +{ + ali_ac97_set(codec, AC97_EXTENDED_STATUS, 9); + ali_ac97_set(codec, AC97_EXTENDED_STATUS, ali_ac97_get(codec, AC97_EXTENDED_STATUS) | 0xE800); + return (ali_ac97_get(codec, AC97_EXTENDED_STATUS) & 1); +} + + +static int ali_ac97_probe_and_powerup(struct ali_card *card, struct ac97_codec *codec) +{ + /* Returns 0 on failure */ + int i; + u16 addr; + if (ac97_probe_codec(codec) == 0) + return 0; + /* ac97_probe_codec is success ,then begin to init codec */ + ali_ac97_set(codec, AC97_RESET, 0xffff); + if (card->channel[0].used == 1) { + ali_ac97_set(codec, AC97_RECORD_SELECT, 0x0000); + ali_ac97_set(codec, AC97_LINEIN_VOL, 0x0808); + ali_ac97_set(codec, AC97_RECORD_GAIN, 0x0F0F); + } + + if (card->channel[2].used == 1) //if MICin then init codec + { + ali_ac97_set(codec, AC97_RECORD_SELECT, 0x0000); + ali_ac97_set(codec, AC97_MIC_VOL, 0x8808); + ali_ac97_set(codec, AC97_RECORD_GAIN, 0x0F0F); + ali_ac97_set(codec, AC97_RECORD_GAIN_MIC, 0x0000); + } + + ali_ac97_set(codec, AC97_MASTER_VOL_STEREO, 0x0000); + ali_ac97_set(codec, AC97_HEADPHONE_VOL, 0x0000); + ali_ac97_set(codec, AC97_PCMOUT_VOL, 0x0000); + ali_ac97_set(codec, AC97_CD_VOL, 0x0808); + ali_ac97_set(codec, AC97_VIDEO_VOL, 0x0808); + ali_ac97_set(codec, AC97_AUX_VOL, 0x0808); + ali_ac97_set(codec, AC97_PHONE_VOL, 0x8048); + ali_ac97_set(codec, AC97_PCBEEP_VOL, 0x0000); + ali_ac97_set(codec, AC97_GENERAL_PURPOSE, AC97_GP_MIX); + ali_ac97_set(codec, AC97_MASTER_VOL_MONO, 0x0000); + ali_ac97_set(codec, 0x38, 0x0000); + addr = ali_ac97_get(codec, 0x2a); + ali_ac97_set(codec, 0x2a, addr | 0x0001); + addr = ali_ac97_get(codec, 0x2a); + addr = ali_ac97_get(codec, 0x28); + ali_ac97_set(codec, 0x2c, 0xbb80); + addr = ali_ac97_get(codec, 0x2c); + /* power it all up */ + ali_ac97_set(codec, AC97_POWER_CONTROL, + ali_ac97_get(codec, AC97_POWER_CONTROL) & ~0x7f00); + /* wait for analog ready */ + for (i = 10; i && ((ali_ac97_get(codec, AC97_POWER_CONTROL) & 0xf) != 0xf); i--) { + set_current_state(TASK_UNINTERRUPTIBLE); + schedule_timeout(HZ / 20); + } + /* FIXME !! */ + i++; + return i; +} + + +/* I clone ali5455(2.4.7 ) not clone i810_audio(2.4.18) */ + +static int ali_reset_5455(struct ali_card *card) +{ + outl(0x80000003, card->iobase + ALI_SCR); + outl(0x83838383, card->iobase + ALI_FIFOCR1); + outl(0x83838383, card->iobase + ALI_FIFOCR2); + if (controller_pcmout_share_spdif_locked > 0) { + outl((inl(card->iobase + ALI_SPDIFICS) | 0x00000001), + card->iobase + ALI_SPDIFICS); + outl(0x0408000a, card->iobase + ALI_INTERFACECR); + } else { + if (codec_independent_spdif_locked > 0) { + outl((inl(card->iobase + ALI_SCR) | 0x00100000), card->iobase + ALI_SCR); // now I select slot 7 & 8 + outl(0x00200000, card->iobase + ALI_INTERFACECR); //enable codec independent spdifout + } else + outl(0x04080002, card->iobase + ALI_INTERFACECR); + } + + outl(0x00000000, card->iobase + ALI_INTERRUPTCR); + outl(0x00000000, card->iobase + ALI_INTERRUPTSR); + if (controller_independent_spdif_locked > 0) + outl((inl(card->iobase + ALI_SPDIFICS) | 0x00000001), + card->iobase + ALI_SPDIFICS); + return 1; +} + + +static int ali_ac97_random_init_stuff(struct ali_card + *card) +{ + u32 reg = inl(card->iobase + ALI_SCR); + int i = 0; + reg = inl(card->iobase + ALI_SCR); + if ((reg & 2) == 0) /* Cold required */ + reg |= 2; + else + reg |= 1; /* Warm */ + reg &= ~0x80000000; /* ACLink on */ + outl(reg, card->iobase + ALI_SCR); + + while (i < 10) { + if ((inl(card->iobase + 0x18) & (1 << 1)) == 0) + break; + current->state = TASK_UNINTERRUPTIBLE; + schedule_timeout(HZ / 20); + i++; + } + if (i == 10) { + printk(KERN_ERR "ali_audio: AC'97 reset failed.\n"); + return 0; + } + + set_current_state(TASK_UNINTERRUPTIBLE); + schedule_timeout(HZ / 2); + return 1; +} + +/* AC97 codec initialisation. */ + +static int __devinit ali_ac97_init(struct ali_card *card) +{ + int num_ac97 = 0; + int total_channels = 0; + struct ac97_codec *codec; + u16 eid; + + if (!ali_ac97_random_init_stuff(card)) + return 0; + + /* Number of channels supported */ + /* What about the codec? Just because the ICH supports */ + /* multiple channels doesn't mean the codec does. */ + /* we'll have to modify this in the codec section below */ + /* to reflect what the codec has. */ + /* ICH and ICH0 only support 2 channels so don't bother */ + /* to check.... */ + inl(card->iobase + ALI_CPR); + card->channels = 2; + + for (num_ac97 = 0; num_ac97 < NR_AC97; num_ac97++) { + + /* Assume codec isn't available until we go through the + * gauntlet below */ + card->ac97_codec[num_ac97] = NULL; + /* The ICH programmer's reference says you should */ + /* check the ready status before probing. So we chk */ + /* What do we do if it's not ready? Wait and try */ + /* again, or abort? */ + if (!ali_ac97_exists(card, num_ac97)) { + if (num_ac97 == 0) + printk(KERN_ERR "ali_audio: Primary codec not ready.\n"); + break; + } + + if ((codec = ac97_alloc_codec()) == NULL) + return -ENOMEM; + /* initialize some basic codec information, other fields will be filled + in ac97_probe_codec */ + codec->private_data = card; + codec->id = num_ac97; + codec->codec_read = ali_ac97_get; + codec->codec_write = ali_ac97_set; + if (!ali_ac97_probe_and_powerup(card, codec)) { + printk(KERN_ERR "ali_audio: timed out waiting for codec %d analog ready", + num_ac97); + kfree(codec); + break; /* it didn't work */ + } + + /* Store state information about S/PDIF transmitter */ + card->ac97_status = 0; + /* Don't attempt to get eid until powerup is complete */ + eid = ali_ac97_get(codec, AC97_EXTENDED_ID); + if (eid == 0xFFFF) { + printk(KERN_ERR "ali_audio: no codec attached ?\n"); + kfree(codec); + break; + } + + card->ac97_features = eid; + /* Now check the codec for useful features to make up for + the dumbness of the ali5455 hardware engine */ + if (!(eid & 0x0001)) + printk(KERN_WARNING + "ali_audio: only 48Khz playback available.\n"); + else { + if (!ali_ac97_enable_variable_rate(codec)) { + printk(KERN_WARNING + "ali_audio: Codec refused to allow VRA, using 48Khz only.\n"); + card->ac97_features &= ~1; + } + } + + /* Determine how many channels the codec(s) support */ + /* - The primary codec always supports 2 */ + /* - If the codec supports AMAP, surround DACs will */ + /* automaticlly get assigned to slots. */ + /* * Check for surround DACs and increment if */ + /* found. */ + /* - Else check if the codec is revision 2.2 */ + /* * If surround DACs exist, assign them to slots */ + /* and increment channel count. */ + + /* All of this only applies to ICH2 and above. ICH */ + /* and ICH0 only support 2 channels. ICH2 will only */ + /* support multiple codecs in a "split audio" config. */ + /* as described above. */ + + /* TODO: Remove all the debugging messages! */ + + if ((eid & 0xc000) == 0) /* primary codec */ + total_channels += 2; + if ((codec->dev_mixer = register_sound_mixer(&ali_mixer_fops, -1)) < 0) { + printk(KERN_ERR "ali_audio: couldn't register mixer!\n"); + kfree(codec); + break; + } + card->ac97_codec[num_ac97] = codec; + } + /* pick the minimum of channels supported by ICHx or codec(s) */ + card->channels = (card->channels > total_channels) ? total_channels : card->channels; + return num_ac97; +} + +static void __devinit ali_configure_clocking(void) +{ + struct ali_card *card; + struct ali_state *state; + struct dmabuf *dmabuf; + unsigned int i, offset, new_offset; + unsigned long flags; + card = devs; + + /* We could try to set the clocking for multiple cards, but can you even have + * more than one ali in a machine? Besides, clocking is global, so unless + * someone actually thinks more than one ali in a machine is possible and + * decides to rewrite that little bit, setting the rate for more than one card + * is a waste of time. + */ + if (card != NULL) { + state = card->states[0] = (struct ali_state *) + kmalloc(sizeof(struct ali_state), GFP_KERNEL); + if (state == NULL) + return; + memset(state, 0, sizeof(struct ali_state)); + dmabuf = &state->dmabuf; + dmabuf->write_channel = card->alloc_pcm_channel(card); + state->virt = 0; + state->card = card; + state->magic = ALI5455_STATE_MAGIC; + init_waitqueue_head(&dmabuf->wait); + init_MUTEX(&state->open_sem); + dmabuf->fmt = ALI5455_FMT_STEREO | ALI5455_FMT_16BIT; + dmabuf->trigger = PCM_ENABLE_OUTPUT; + ali_set_dac_rate(state, 48000); + if (prog_dmabuf(state, 0) != 0) + goto config_out_nodmabuf; + + if (dmabuf->dmasize < 16384) + goto config_out; + + dmabuf->count = dmabuf->dmasize; + outb(31, card->iobase + dmabuf->write_channel->port + OFF_LVI); + + local_irq_save(flags); + start_dac(state); + offset = ali_get_dma_addr(state, 0); + mdelay(50); + new_offset = ali_get_dma_addr(state, 0); + stop_dac(state); + + outb(2, card->iobase + dmabuf->write_channel->port + OFF_CR); + local_irq_restore(flags); + + i = new_offset - offset; + + if (i == 0) + goto config_out; + i = i / 4 * 20; + if (i > 48500 || i < 47500) { + clocking = clocking * clocking / i; + } +config_out: + dealloc_dmabuf(state); +config_out_nodmabuf: + state->card->free_pcm_channel(state->card, state->dmabuf. write_channel->num); + kfree(state); + card->states[0] = NULL; + } +} + +/* install the driver, we do not allocate hardware channel nor DMA buffer now, they are defered + until "ACCESS" time (in prog_dmabuf called by open/read/write/ioctl/mmap) */ + +static int __devinit ali_probe(struct pci_dev *pci_dev, + const struct pci_device_id *pci_id) +{ + struct ali_card *card; + if (pci_enable_device(pci_dev)) + return -EIO; + if (pci_set_dma_mask(pci_dev, ALI5455_DMA_MASK)) { + printk(KERN_ERR "ali5455: architecture does not support" + " 32bit PCI busmaster DMA\n"); + return -ENODEV; + } + + if ((card = kmalloc(sizeof(struct ali_card), GFP_KERNEL)) == NULL) { + printk(KERN_ERR "ali_audio: out of memory\n"); + return -ENOMEM; + } + memset(card, 0, sizeof(*card)); + card->initializing = 1; + card->iobase = pci_resource_start(pci_dev, 0); + card->pci_dev = pci_dev; + card->pci_id = pci_id->device; + card->irq = pci_dev->irq; + card->next = devs; + card->magic = ALI5455_CARD_MAGIC; +#ifdef CONFIG_PM + card->pm_suspended = 0; +#endif + spin_lock_init(&card->lock); + spin_lock_init(&card->ac97_lock); + devs = card; + pci_set_master(pci_dev); + printk(KERN_INFO "ali: %s found at IO 0x%04lx, IRQ %d\n", + card_names[pci_id->driver_data], card->iobase, card->irq); + card->alloc_pcm_channel = ali_alloc_pcm_channel; + card->alloc_rec_pcm_channel = ali_alloc_rec_pcm_channel; + card->alloc_rec_mic_channel = ali_alloc_rec_mic_channel; + card->alloc_codec_spdifout_channel = ali_alloc_codec_spdifout_channel; + card->alloc_controller_spdifout_channel = ali_alloc_controller_spdifout_channel; + card->free_pcm_channel = ali_free_pcm_channel; + card->channel[0].offset = 0; + card->channel[0].port = 0x40; + card->channel[0].num = 0; + card->channel[1].offset = 0; + card->channel[1].port = 0x50; + card->channel[1].num = 1; + card->channel[2].offset = 0; + card->channel[2].port = 0x60; + card->channel[2].num = 2; + card->channel[3].offset = 0; + card->channel[3].port = 0x70; + card->channel[3].num = 3; + card->channel[4].offset = 0; + card->channel[4].port = 0xb0; + card->channel[4].num = 4; + /* claim our iospace and irq */ + request_region(card->iobase, 256, card_names[pci_id->driver_data]); + if (request_irq(card->irq, &ali_interrupt, SA_SHIRQ, + card_names[pci_id->driver_data], card)) { + printk(KERN_ERR "ali_audio: unable to allocate irq %d\n", + card->irq); + release_region(card->iobase, 256); + kfree(card); + return -ENODEV; + } + + if (ali_reset_5455(card) <= 0) { + unregister_sound_dsp(card->dev_audio); + release_region(card->iobase, 256); + free_irq(card->irq, card); + kfree(card); + return -ENODEV; + } + + /* initialize AC97 codec and register /dev/mixer */ + if (ali_ac97_init(card) < 0) { + release_region(card->iobase, 256); + free_irq(card->irq, card); + kfree(card); + return -ENODEV; + } + + pci_set_drvdata(pci_dev, card); + + if (clocking == 0) { + clocking = 48000; + ali_configure_clocking(); + } + + /* register /dev/dsp */ + if ((card->dev_audio = register_sound_dsp(&ali_audio_fops, -1)) < 0) { + int i; + printk(KERN_ERR"ali_audio: couldn't register DSP device!\n"); + release_region(card->iobase, 256); + free_irq(card->irq, card); + for (i = 0; i < NR_AC97; i++) + if (card->ac97_codec[i] != NULL) { + unregister_sound_mixer(card->ac97_codec[i]->dev_mixer); + kfree(card->ac97_codec[i]); + } + kfree(card); + return -ENODEV; + } + card->initializing = 0; + return 0; +} + +static void __devexit ali_remove(struct pci_dev *pci_dev) +{ + int i; + struct ali_card *card = pci_get_drvdata(pci_dev); + /* free hardware resources */ + free_irq(card->irq, devs); + release_region(card->iobase, 256); + /* unregister audio devices */ + for (i = 0; i < NR_AC97; i++) + if (card->ac97_codec[i] != NULL) { + unregister_sound_mixer(card->ac97_codec[i]-> + dev_mixer); + ac97_release_codec(card->ac97_codec[i]); + card->ac97_codec[i] = NULL; + } + unregister_sound_dsp(card->dev_audio); + kfree(card); +} + +#ifdef CONFIG_PM +static int ali_pm_suspend(struct pci_dev *dev, pm_message_t pm_state) +{ + struct ali_card *card = pci_get_drvdata(dev); + struct ali_state *state; + unsigned long flags; + struct dmabuf *dmabuf; + int i, num_ac97; + + if (!card) + return 0; + spin_lock_irqsave(&card->lock, flags); + card->pm_suspended = 1; + for (i = 0; i < NR_HW_CH; i++) { + state = card->states[i]; + if (!state) + continue; + /* this happens only if there are open files */ + dmabuf = &state->dmabuf; + if (dmabuf->enable & DAC_RUNNING || + (dmabuf->count + && (dmabuf->trigger & PCM_ENABLE_OUTPUT))) { + state->pm_saved_dac_rate = dmabuf->rate; + stop_dac(state); + } else { + state->pm_saved_dac_rate = 0; + } + if (dmabuf->enable & ADC_RUNNING) { + state->pm_saved_adc_rate = dmabuf->rate; + stop_adc(state); + } else { + state->pm_saved_adc_rate = 0; + } + dmabuf->ready = 0; + dmabuf->swptr = dmabuf->hwptr = 0; + dmabuf->count = dmabuf->total_bytes = 0; + } + + spin_unlock_irqrestore(&card->lock, flags); + /* save mixer settings */ + for (num_ac97 = 0; num_ac97 < NR_AC97; num_ac97++) { + struct ac97_codec *codec = card->ac97_codec[num_ac97]; + if (!codec) + continue; + for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) { + if ((supported_mixer(codec, i)) && (codec->read_mixer)) { + card->pm_saved_mixer_settings[i][num_ac97] = codec->read_mixer(codec, i); + } + } + } + pci_save_state(dev); /* XXX do we need this? */ + pci_disable_device(dev); /* disable busmastering */ + pci_set_power_state(dev, 3); /* Zzz. */ + return 0; +} + + +static int ali_pm_resume(struct pci_dev *dev) +{ + int num_ac97, i = 0; + struct ali_card *card = pci_get_drvdata(dev); + pci_enable_device(dev); + pci_restore_state(dev); + /* observation of a toshiba portege 3440ct suggests that the + hardware has to be more or less completely reinitialized from + scratch after an apm suspend. Works For Me. -dan */ + ali_ac97_random_init_stuff(card); + for (num_ac97 = 0; num_ac97 < NR_AC97; num_ac97++) { + struct ac97_codec *codec = card->ac97_codec[num_ac97]; + /* check they haven't stolen the hardware while we were + away */ + if (!codec || !ali_ac97_exists(card, num_ac97)) { + if (num_ac97) + continue; + else + BUG(); + } + if (!ali_ac97_probe_and_powerup(card, codec)) + BUG(); + if ((card->ac97_features & 0x0001)) { + /* at probe time we found we could do variable + rates, but APM suspend has made it forget + its magical powers */ + if (!ali_ac97_enable_variable_rate(codec)) + BUG(); + } + /* we lost our mixer settings, so restore them */ + for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) { + if (supported_mixer(codec, i)) { + int val = card->pm_saved_mixer_settings[i][num_ac97]; + codec->mixer_state[i] = val; + codec->write_mixer(codec, i, + (val & 0xff), + ((val >> 8) & 0xff)); + } + } + } + + /* we need to restore the sample rate from whatever it was */ + for (i = 0; i < NR_HW_CH; i++) { + struct ali_state *state = card->states[i]; + if (state) { + if (state->pm_saved_adc_rate) + ali_set_adc_rate(state, state->pm_saved_adc_rate); + if (state->pm_saved_dac_rate) + ali_set_dac_rate(state, state->pm_saved_dac_rate); + } + } + + card->pm_suspended = 0; + /* any processes that were reading/writing during the suspend + probably ended up here */ + for (i = 0; i < NR_HW_CH; i++) { + struct ali_state *state = card->states[i]; + if (state) + wake_up(&state->dmabuf.wait); + } + return 0; +} +#endif /* CONFIG_PM */ + +MODULE_AUTHOR(""); +MODULE_DESCRIPTION("ALI 5455 audio support"); +MODULE_LICENSE("GPL"); +module_param(clocking, int, 0); +/* FIXME: bool? */ +module_param(strict_clocking, uint, 0); +module_param(codec_pcmout_share_spdif_locked, uint, 0); +module_param(codec_independent_spdif_locked, uint, 0); +module_param(controller_pcmout_share_spdif_locked, uint, 0); +module_param(controller_independent_spdif_locked, uint, 0); +#define ALI5455_MODULE_NAME "ali5455" +static struct pci_driver ali_pci_driver = { + .name = ALI5455_MODULE_NAME, + .id_table = ali_pci_tbl, + .probe = ali_probe, + .remove = __devexit_p(ali_remove), +#ifdef CONFIG_PM + .suspend = ali_pm_suspend, + .resume = ali_pm_resume, +#endif /* CONFIG_PM */ +}; + +static int __init ali_init_module(void) +{ + printk(KERN_INFO "ALI 5455 + AC97 Audio, version " + DRIVER_VERSION ", " __TIME__ " " __DATE__ "\n"); + + if (codec_independent_spdif_locked > 0) { + if (codec_independent_spdif_locked == 32000 + || codec_independent_spdif_locked == 44100 + || codec_independent_spdif_locked == 48000) { + printk(KERN_INFO "ali_audio: Enabling S/PDIF at sample rate %dHz.\n", codec_independent_spdif_locked); + } else { + printk(KERN_INFO "ali_audio: S/PDIF can only be locked to 32000, 44100, or 48000Hz.\n"); + codec_independent_spdif_locked = 0; + } + } + if (controller_independent_spdif_locked > 0) { + if (controller_independent_spdif_locked == 32000 + || controller_independent_spdif_locked == 44100 + || controller_independent_spdif_locked == 48000) { + printk(KERN_INFO "ali_audio: Enabling S/PDIF at sample rate %dHz.\n", controller_independent_spdif_locked); + } else { + printk(KERN_INFO "ali_audio: S/PDIF can only be locked to 32000, 44100, or 48000Hz.\n"); + controller_independent_spdif_locked = 0; + } + } + + if (codec_pcmout_share_spdif_locked > 0) { + if (codec_pcmout_share_spdif_locked == 32000 + || codec_pcmout_share_spdif_locked == 44100 + || codec_pcmout_share_spdif_locked == 48000) { + printk(KERN_INFO "ali_audio: Enabling S/PDIF at sample rate %dHz.\n", codec_pcmout_share_spdif_locked); + } else { + printk(KERN_INFO "ali_audio: S/PDIF can only be locked to 32000, 44100, or 48000Hz.\n"); + codec_pcmout_share_spdif_locked = 0; + } + } + if (controller_pcmout_share_spdif_locked > 0) { + if (controller_pcmout_share_spdif_locked == 32000 + || controller_pcmout_share_spdif_locked == 44100 + || controller_pcmout_share_spdif_locked == 48000) { + printk(KERN_INFO "ali_audio: Enabling controller S/PDIF at sample rate %dHz.\n", controller_pcmout_share_spdif_locked); + } else { + printk(KERN_INFO "ali_audio: S/PDIF can only be locked to 32000, 44100, or 48000Hz.\n"); + controller_pcmout_share_spdif_locked = 0; + } + } + return pci_register_driver(&ali_pci_driver); +} + +static void __exit ali_cleanup_module(void) +{ + pci_unregister_driver(&ali_pci_driver); +} + +module_init(ali_init_module); +module_exit(ali_cleanup_module); +/* +Local Variables: +c-basic-offset: 8 +End: +*/ |