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-rw-r--r--sound/oss/i810_audio.c3656
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diff --git a/sound/oss/i810_audio.c b/sound/oss/i810_audio.c
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--- a/sound/oss/i810_audio.c
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-/*
- * Intel i810 and friends ICH driver for Linux
- * Alan Cox <alan@redhat.com>
- *
- * Built from:
- * Low level code: Zach Brown (original nonworking i810 OSS driver)
- * Jaroslav Kysela <perex@suse.cz> (working ALSA driver)
- *
- * Framework: Thomas Sailer <sailer@ife.ee.ethz.ch>
- * Extended by: Zach Brown <zab@redhat.com>
- * and others..
- *
- * Hardware Provided By:
- * Analog Devices (A major AC97 codec maker)
- * Intel Corp (you've probably heard of them already)
- *
- * AC97 clues and assistance provided by
- * Analog Devices
- * Zach 'Fufu' Brown
- * Jeff Garzik
- *
- * 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.
- *
- *
- * Intel 810 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.
- *
- * Fix The Sound On Dell
- *
- * Not everyone uses 48KHz. We know of no way to detect this reliably
- * and certainly not to get the right data. If your i810 audio sounds
- * stupid you may need to investigate other speeds. According to Analog
- * they tend to use a 14.318MHz clock which gives you a base rate of
- * 41194Hz.
- *
- * This is available via the 'ftsodell=1' option.
- *
- * If you need to force a specific rate set the clocking= option
- *
- * This driver is cursed. (Ben LaHaise)
- *
- * ICH 3 caveats
- * Intel errata #7 for ICH3 IO. We need to disable SMI stuff
- * when codec probing. [Not Yet Done]
- *
- * ICH 4 caveats
- *
- * The ICH4 has the feature, that the codec ID doesn't have to be
- * congruent with the IO connection.
- *
- * Therefore, from driver version 0.23 on, there is a "codec ID" <->
- * "IO register base offset" mapping (card->ac97_id_map) field.
- *
- * Juergen "George" Sawinski (jsaw)
- */
-
-#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 <linux/interrupt.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/bitops.h>
-#include <linux/mutex.h>
-#include <linux/mm.h>
-
-#include <asm/uaccess.h>
-
-#define DRIVER_VERSION "1.01"
-
-#define MODULOP2(a, b) ((a) & ((b) - 1))
-#define MASKP2(a, b) ((a) & ~((b) - 1))
-
-static int ftsodell;
-static int strict_clocking;
-static unsigned int clocking;
-static int spdif_locked;
-static int ac97_quirk = AC97_TUNE_DEFAULT;
-
-//#define DEBUG
-//#define DEBUG2
-//#define DEBUG_INTERRUPTS
-//#define DEBUG_MMAP
-//#define DEBUG_MMIO
-
-#define ADC_RUNNING 1
-#define DAC_RUNNING 2
-
-#define I810_FMT_16BIT 1
-#define I810_FMT_STEREO 2
-#define I810_FMT_MASK 3
-
-#define SPDIF_ON 0x0004
-#define SURR_ON 0x0010
-#define CENTER_LFE_ON 0x0020
-#define VOL_MUTED 0x8000
-
-/* 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 i810 channel */
-#define SG_LEN 32
-struct i810_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.
- *
- * ICH4 has 6 dma engines, pcm in, pcm out, mic, pcm in 2,
- * mic in 2, s/pdif. Of special interest is the fact that
- * the upper 3 DMA engines on the ICH4 *must* be accessed
- * via mmio access instead of pio access.
- */
-
-#define ENUM_ENGINE(PRE,DIG) \
-enum { \
- PRE##_BASE = 0x##DIG##0, /* Base Address */ \
- 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##_PIV = 0x##DIG##a, /* Prefetched Index Value */ \
- PRE##_CR = 0x##DIG##b /* Control Register */ \
-}
-
-ENUM_ENGINE(OFF,0); /* Offsets */
-ENUM_ENGINE(PI,0); /* PCM In */
-ENUM_ENGINE(PO,1); /* PCM Out */
-ENUM_ENGINE(MC,2); /* Mic In */
-
-enum {
- GLOB_CNT = 0x2c, /* Global Control */
- GLOB_STA = 0x30, /* Global Status */
- CAS = 0x34 /* Codec Write Semaphore Register */
-};
-
-ENUM_ENGINE(MC2,4); /* Mic In 2 */
-ENUM_ENGINE(PI2,5); /* PCM In 2 */
-ENUM_ENGINE(SP,6); /* S/PDIF */
-
-enum {
- SDM = 0x80 /* SDATA_IN Map Register */
-};
-
-/* 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) */
-#define DMA_INT_MASK (DMA_INT_FIFO|DMA_INT_COMPLETE|DMA_INT_LVI)
-
-/* interrupts for the whole chip */
-#define INT_SEC (1<<11)
-#define INT_PRI (1<<10)
-#define INT_MC (1<<7)
-#define INT_PO (1<<6)
-#define INT_PI (1<<5)
-#define INT_MO (1<<2)
-#define INT_NI (1<<1)
-#define INT_GPI (1<<0)
-#define INT_MASK (INT_SEC|INT_PRI|INT_MC|INT_PO|INT_PI|INT_MO|INT_NI|INT_GPI)
-
-/* magic numbers to protect our data structures */
-#define I810_CARD_MAGIC 0x5072696E /* "Prin" */
-#define I810_STATE_MAGIC 0x63657373 /* "cess" */
-#define I810_DMA_MASK 0xffffffff /* DMA buffer mask for pci_alloc_consist */
-#define NR_HW_CH 3
-
-/* maxinum number of AC97 codecs connected, AC97 2.0 defined 4 */
-#define NR_AC97 4
-
-/* 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 };
-
-enum {
- ICH82801AA = 0,
- ICH82901AB,
- INTEL440MX,
- INTELICH2,
- INTELICH3,
- INTELICH4,
- INTELICH5,
- SI7012,
- NVIDIA_NFORCE,
- AMD768,
- AMD8111
-};
-
-static char * card_names[] = {
- "Intel ICH 82801AA",
- "Intel ICH 82901AB",
- "Intel 440MX",
- "Intel ICH2",
- "Intel ICH3",
- "Intel ICH4",
- "Intel ICH5",
- "SiS 7012",
- "NVIDIA nForce Audio",
- "AMD 768",
- "AMD-8111 IOHub"
-};
-
-/* These are capabilities (and bugs) the chipsets _can_ have */
-static struct {
- int16_t nr_ac97;
-#define CAP_MMIO 0x0001
-#define CAP_20BIT_AUDIO_SUPPORT 0x0002
- u_int16_t flags;
-} card_cap[] = {
- { 1, 0x0000 }, /* ICH82801AA */
- { 1, 0x0000 }, /* ICH82901AB */
- { 1, 0x0000 }, /* INTEL440MX */
- { 1, 0x0000 }, /* INTELICH2 */
- { 2, 0x0000 }, /* INTELICH3 */
- { 3, 0x0003 }, /* INTELICH4 */
- { 3, 0x0003 }, /* INTELICH5 */
- /*@FIXME to be verified*/ { 2, 0x0000 }, /* SI7012 */
- /*@FIXME to be verified*/ { 2, 0x0000 }, /* NVIDIA_NFORCE */
- /*@FIXME to be verified*/ { 2, 0x0000 }, /* AMD768 */
- /*@FIXME to be verified*/ { 3, 0x0001 }, /* AMD8111 */
-};
-
-static struct pci_device_id i810_pci_tbl [] = {
- {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_5,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, ICH82801AA},
- {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_5,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, ICH82901AB},
- {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_440MX,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, INTEL440MX},
- {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_4,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, INTELICH2},
- {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_5,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, INTELICH3},
- {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_5,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, INTELICH4},
- {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_5,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, INTELICH5},
- {PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_7012,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, SI7012},
- {PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_MCP1_AUDIO,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, NVIDIA_NFORCE},
- {PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_MCP2_AUDIO,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, NVIDIA_NFORCE},
- {PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_MCP3_AUDIO,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, NVIDIA_NFORCE},
- {PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_OPUS_7445,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, AMD768},
- {PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_AUDIO,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, AMD8111},
- {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_5,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, INTELICH4},
- {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_18,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, INTELICH4},
- {PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_AUDIO,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, NVIDIA_NFORCE},
- {0,}
-};
-
-MODULE_DEVICE_TABLE (pci, i810_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 i810_state {
- unsigned int magic;
- struct i810_card *card; /* Card info */
-
- /* single open lock mechanism, only used for recording */
- struct mutex open_mutex;
- 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 i810_channel *read_channel;
- struct i810_channel *write_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 i810_card {
- unsigned int magic;
-
- /* We keep i810 cards in a linked list */
- struct i810_card *next;
-
- /* The i810 has a certain amount of cross channel interaction
- so we use a single per card lock */
- spinlock_t lock;
-
- /* Control AC97 access serialization */
- spinlock_t ac97_lock;
-
- /* PCI device stuff */
- struct pci_dev * pci_dev;
- u16 pci_id;
- u16 pci_id_internal; /* used to access card_cap[] */
-#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*/
- u16 ac97_id_map[NR_AC97];
- struct ac97_codec *ac97_codec[NR_AC97];
- struct i810_state *states[NR_HW_CH];
- struct i810_channel *channel; /* 1:1 to states[] but diff. lifetime */
- dma_addr_t chandma;
-
- u16 ac97_features;
- u16 ac97_status;
- u16 channels;
-
- /* hardware resources */
- unsigned long ac97base;
- unsigned long iobase;
- u32 irq;
-
- unsigned long ac97base_mmio_phys;
- unsigned long iobase_mmio_phys;
- u_int8_t __iomem *ac97base_mmio;
- u_int8_t __iomem *iobase_mmio;
-
- int use_mmio;
-
- /* Function support */
- struct i810_channel *(*alloc_pcm_channel)(struct i810_card *);
- struct i810_channel *(*alloc_rec_pcm_channel)(struct i810_card *);
- struct i810_channel *(*alloc_rec_mic_channel)(struct i810_card *);
- void (*free_pcm_channel)(struct i810_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;
-};
-
-/* extract register offset from codec struct */
-#define IO_REG_OFF(codec) (((struct i810_card *) codec->private_data)->ac97_id_map[codec->id])
-
-#define I810_IOREAD(size, type, card, off) \
-({ \
- type val; \
- if (card->use_mmio) \
- val=read##size(card->iobase_mmio+off); \
- else \
- val=in##size(card->iobase+off); \
- val; \
-})
-
-#define I810_IOREADL(card, off) I810_IOREAD(l, u32, card, off)
-#define I810_IOREADW(card, off) I810_IOREAD(w, u16, card, off)
-#define I810_IOREADB(card, off) I810_IOREAD(b, u8, card, off)
-
-#define I810_IOWRITE(size, val, card, off) \
-({ \
- if (card->use_mmio) \
- write##size(val, card->iobase_mmio+off); \
- else \
- out##size(val, card->iobase+off); \
-})
-
-#define I810_IOWRITEL(val, card, off) I810_IOWRITE(l, val, card, off)
-#define I810_IOWRITEW(val, card, off) I810_IOWRITE(w, val, card, off)
-#define I810_IOWRITEB(val, card, off) I810_IOWRITE(b, val, card, off)
-
-#define GET_CIV(card, port) MODULOP2(I810_IOREADB((card), (port) + OFF_CIV), SG_LEN)
-#define GET_LVI(card, port) MODULOP2(I810_IOREADB((card), (port) + OFF_LVI), SG_LEN)
-
-/* set LVI from CIV */
-#define CIV_TO_LVI(card, port, off) \
- I810_IOWRITEB(MODULOP2(GET_CIV((card), (port)) + (off), SG_LEN), (card), (port) + OFF_LVI)
-
-static struct ac97_quirk ac97_quirks[] __devinitdata = {
- {
- .vendor = 0x0e11,
- .device = 0x00b8,
- .name = "Compaq Evo D510C",
- .type = AC97_TUNE_HP_ONLY
- },
- {
- .vendor = 0x1028,
- .device = 0x00d8,
- .name = "Dell Precision 530", /* AD1885 */
- .type = AC97_TUNE_HP_ONLY
- },
- {
- .vendor = 0x1028,
- .device = 0x0126,
- .name = "Dell Optiplex GX260", /* AD1981A */
- .type = AC97_TUNE_HP_ONLY
- },
- {
- .vendor = 0x1028,
- .device = 0x012d,
- .name = "Dell Precision 450", /* AD1981B*/
- .type = AC97_TUNE_HP_ONLY
- },
- { /* FIXME: which codec? */
- .vendor = 0x103c,
- .device = 0x00c3,
- .name = "Hewlett-Packard onboard",
- .type = AC97_TUNE_HP_ONLY
- },
- {
- .vendor = 0x103c,
- .device = 0x12f1,
- .name = "HP xw8200", /* AD1981B*/
- .type = AC97_TUNE_HP_ONLY
- },
- {
- .vendor = 0x103c,
- .device = 0x3008,
- .name = "HP xw4200", /* AD1981B*/
- .type = AC97_TUNE_HP_ONLY
- },
- {
- .vendor = 0x10f1,
- .device = 0x2665,
- .name = "Fujitsu-Siemens Celsius", /* AD1981? */
- .type = AC97_TUNE_HP_ONLY
- },
- {
- .vendor = 0x10f1,
- .device = 0x2885,
- .name = "AMD64 Mobo", /* ALC650 */
- .type = AC97_TUNE_HP_ONLY
- },
- {
- .vendor = 0x110a,
- .device = 0x0056,
- .name = "Fujitsu-Siemens Scenic", /* AD1981? */
- .type = AC97_TUNE_HP_ONLY
- },
- {
- .vendor = 0x11d4,
- .device = 0x5375,
- .name = "ADI AD1985 (discrete)",
- .type = AC97_TUNE_HP_ONLY
- },
- {
- .vendor = 0x1462,
- .device = 0x5470,
- .name = "MSI P4 ATX 645 Ultra",
- .type = AC97_TUNE_HP_ONLY
- },
- {
- .vendor = 0x1734,
- .device = 0x0088,
- .name = "Fujitsu-Siemens D1522", /* AD1981 */
- .type = AC97_TUNE_HP_ONLY
- },
- {
- .vendor = 0x8086,
- .device = 0x4856,
- .name = "Intel D845WN (82801BA)",
- .type = AC97_TUNE_SWAP_HP
- },
- {
- .vendor = 0x8086,
- .device = 0x4d44,
- .name = "Intel D850EMV2", /* AD1885 */
- .type = AC97_TUNE_HP_ONLY
- },
- {
- .vendor = 0x8086,
- .device = 0x4d56,
- .name = "Intel ICH/AD1885",
- .type = AC97_TUNE_HP_ONLY
- },
- {
- .vendor = 0x1028,
- .device = 0x012d,
- .name = "Dell Precision 450", /* AD1981B*/
- .type = AC97_TUNE_HP_ONLY
- },
- {
- .vendor = 0x103c,
- .device = 0x3008,
- .name = "HP xw4200", /* AD1981B*/
- .type = AC97_TUNE_HP_ONLY
- },
- {
- .vendor = 0x103c,
- .device = 0x12f1,
- .name = "HP xw8200", /* AD1981B*/
- .type = AC97_TUNE_HP_ONLY
- },
- { } /* terminator */
-};
-
-static struct i810_card *devs = NULL;
-
-static int i810_open_mixdev(struct inode *inode, struct file *file);
-static int i810_ioctl_mixdev(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg);
-static u16 i810_ac97_get(struct ac97_codec *dev, u8 reg);
-static void i810_ac97_set(struct ac97_codec *dev, u8 reg, u16 data);
-static u16 i810_ac97_get_mmio(struct ac97_codec *dev, u8 reg);
-static void i810_ac97_set_mmio(struct ac97_codec *dev, u8 reg, u16 data);
-static u16 i810_ac97_get_io(struct ac97_codec *dev, u8 reg);
-static void i810_ac97_set_io(struct ac97_codec *dev, u8 reg, u16 data);
-
-static struct i810_channel *i810_alloc_pcm_channel(struct i810_card *card)
-{
- if(card->channel[1].used==1)
- return NULL;
- card->channel[1].used=1;
- return &card->channel[1];
-}
-
-static struct i810_channel *i810_alloc_rec_pcm_channel(struct i810_card *card)
-{
- if(card->channel[0].used==1)
- return NULL;
- card->channel[0].used=1;
- return &card->channel[0];
-}
-
-static struct i810_channel *i810_alloc_rec_mic_channel(struct i810_card *card)
-{
- if(card->channel[2].used==1)
- return NULL;
- card->channel[2].used=1;
- return &card->channel[2];
-}
-
-static void i810_free_pcm_channel(struct i810_card *card, int channel)
-{
- card->channel[channel].used=0;
-}
-
-static int i810_valid_spdif_rate ( struct ac97_codec *codec, int rate )
-{
- unsigned long id = 0L;
-
- id = (i810_ac97_get(codec, AC97_VENDOR_ID1) << 16);
- id |= i810_ac97_get(codec, AC97_VENDOR_ID2) & 0xffff;
-#ifdef DEBUG
- printk ( "i810_audio: codec = %s, codec_id = 0x%08lx\n", codec->name, id);
-#endif
- switch ( id ) {
- case 0x41445361: /* AD1886 */
- 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);
-}
-
-/* i810_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 int i810_set_spdif_output(struct i810_state *state, int slots, int rate)
-{
- int vol;
- int aud_reg;
- int r = 0;
- struct ac97_codec *codec = state->card->ac97_codec[0];
-
- if(!codec->codec_ops->digital) {
- state->card->ac97_status &= ~SPDIF_ON;
- } else {
- if ( slots == -1 ) { /* Turn off S/PDIF */
- codec->codec_ops->digital(codec, 0, 0, 0);
- /* If the volume wasn't muted before we turned on S/PDIF, unmute it */
- if ( !(state->card->ac97_status & VOL_MUTED) ) {
- aud_reg = i810_ac97_get(codec, AC97_MASTER_VOL_STEREO);
- i810_ac97_set(codec, AC97_MASTER_VOL_STEREO, (aud_reg & ~VOL_MUTED));
- }
- state->card->ac97_status &= ~(VOL_MUTED | SPDIF_ON);
- return 0;
- }
-
- vol = i810_ac97_get(codec, AC97_MASTER_VOL_STEREO);
- state->card->ac97_status = vol & VOL_MUTED;
-
- r = codec->codec_ops->digital(codec, slots, rate, 0);
-
- if(r)
- state->card->ac97_status |= SPDIF_ON;
- else
- state->card->ac97_status &= ~SPDIF_ON;
-
- /* Mute the analog output */
- /* Should this only mute the PCM volume??? */
- i810_ac97_set(codec, AC97_MASTER_VOL_STEREO, (vol | VOL_MUTED));
- }
- return r;
-}
-
-/* i810_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 i810_set_dac_channels(struct i810_state *state, int channel)
-{
- int aud_reg;
- struct ac97_codec *codec = state->card->ac97_codec[0];
-
- /* No codec, no setup */
-
- if(codec == NULL)
- return;
-
- aud_reg = i810_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;
- }
- i810_ac97_set(codec, AC97_EXTENDED_STATUS, aud_reg);
-
-}
-
-
-/* set playback sample rate */
-static unsigned int i810_set_dac_rate(struct i810_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;
-#ifdef DEBUG
- printk("Asked for %d Hz, but ac97_features says we only do %dHz. Sorry!\n",
- rate,clocking);
-#endif
- 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;
- }
-#ifdef DEBUG
- printk("i810_audio: called i810_set_dac_rate : asked for %d, got %d\n", rate, dmabuf->rate);
-#endif
- rate = new_rate;
- return dmabuf->rate;
-}
-
-/* set recording sample rate */
-static unsigned int i810_set_adc_rate(struct i810_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;
- }
-#ifdef DEBUG
- printk("i810_audio: called i810_set_adc_rate : rate = %d/%d\n", dmabuf->rate, rate);
-#endif
- return dmabuf->rate;
-}
-
-/* get current playback/recording dma buffer pointer (byte offset from LBA),
- called with spinlock held! */
-
-static inline unsigned i810_get_dma_addr(struct i810_state *state, int rec)
-{
- struct dmabuf *dmabuf = &state->dmabuf;
- unsigned int civ, offset, port, port_picb, bytes = 2;
-
- if (!dmabuf->enable)
- return 0;
-
- if (rec)
- port = dmabuf->read_channel->port;
- else
- port = dmabuf->write_channel->port;
-
- if(state->card->pci_id == PCI_DEVICE_ID_SI_7012) {
- port_picb = port + OFF_SR;
- bytes = 1;
- } else
- port_picb = port + OFF_PICB;
-
- do {
- civ = GET_CIV(state->card, port);
- offset = I810_IOREADW(state->card, 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 the right place, and we will suddenly think
- * we just went forward dmasize - fragsize bytes, causing
- * totally stupid *huge* dma overrun messages. We are
- * assuming that the 1us delay is more than long enough
- * that we won't have to worry about the chip still being
- * out of sync with reality ;-)
- */
- } while (civ != GET_CIV(state->card, port) || offset != I810_IOREADW(state->card, port_picb));
-
- return (((civ + 1) * dmabuf->fragsize - (bytes * offset))
- % dmabuf->dmasize);
-}
-
-/* Stop recording (lock held) */
-static inline void __stop_adc(struct i810_state *state)
-{
- struct dmabuf *dmabuf = &state->dmabuf;
- struct i810_card *card = state->card;
-
- dmabuf->enable &= ~ADC_RUNNING;
- I810_IOWRITEB(0, card, PI_CR);
- // wait for the card to acknowledge shutdown
- while( I810_IOREADB(card, PI_CR) != 0 ) ;
- // now clear any latent interrupt bits (like the halt bit)
- if(card->pci_id == PCI_DEVICE_ID_SI_7012)
- I810_IOWRITEB( I810_IOREADB(card, PI_PICB), card, PI_PICB );
- else
- I810_IOWRITEB( I810_IOREADB(card, PI_SR), card, PI_SR );
- I810_IOWRITEL( I810_IOREADL(card, GLOB_STA) & INT_PI, card, GLOB_STA);
-}
-
-static void stop_adc(struct i810_state *state)
-{
- struct i810_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 i810_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;
- // Interrupt enable, LVI enable, DMA enable
- I810_IOWRITEB(0x10 | 0x04 | 0x01, state->card, PI_CR);
- }
-}
-
-static void start_adc(struct i810_state *state)
-{
- struct i810_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 i810_state *state)
-{
- struct dmabuf *dmabuf = &state->dmabuf;
- struct i810_card *card = state->card;
-
- dmabuf->enable &= ~DAC_RUNNING;
- I810_IOWRITEB(0, card, PO_CR);
- // wait for the card to acknowledge shutdown
- while( I810_IOREADB(card, PO_CR) != 0 ) ;
- // now clear any latent interrupt bits (like the halt bit)
- if(card->pci_id == PCI_DEVICE_ID_SI_7012)
- I810_IOWRITEB( I810_IOREADB(card, PO_PICB), card, PO_PICB );
- else
- I810_IOWRITEB( I810_IOREADB(card, PO_SR), card, PO_SR );
- I810_IOWRITEL( I810_IOREADL(card, GLOB_STA) & INT_PO, card, GLOB_STA);
-}
-
-static void stop_dac(struct i810_state *state)
-{
- struct i810_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 i810_state *state)
-{
- struct dmabuf *dmabuf = &state->dmabuf;
-
- if (dmabuf->count > 0 && dmabuf->ready && !dmabuf->enable &&
- (dmabuf->trigger & PCM_ENABLE_OUTPUT)) {
- dmabuf->enable |= DAC_RUNNING;
- // Interrupt enable, LVI enable, DMA enable
- I810_IOWRITEB(0x10 | 0x04 | 0x01, state->card, PO_CR);
- }
-}
-static void start_dac(struct i810_state *state)
-{
- struct i810_card *card = state->card;
- unsigned long flags;
-
- spin_lock_irqsave(&card->lock, flags);
- __start_dac(state);
- spin_unlock_irqrestore(&card->lock, flags);
-}
-
-#define DMABUF_DEFAULTORDER (16-PAGE_SHIFT)
-#define DMABUF_MINORDER 1
-
-/* allocate DMA buffer, playback and recording buffer should be allocated separately */
-static int alloc_dmabuf(struct i810_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;
-
-
-#ifdef DEBUG
- printk("i810_audio: allocated %ld (order = %d) bytes at %p\n",
- PAGE_SIZE << order, order, rawbuf);
-#endif
-
- 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 i810_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 i810_state *state, unsigned rec)
-{
- struct dmabuf *dmabuf = &state->dmabuf;
- struct i810_channel *c;
- 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);
- 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->fragshift = ffs(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;
- } else if (dmabuf->ossmaxfrags == 8) {
- fragint = 4;
- } else if (dmabuf->ossmaxfrags == 16) {
- fragint = 2;
- } else {
- fragint = 1;
- }
- /*
- * Now set up the ring
- */
- if(dmabuf->read_channel)
- c = dmabuf->read_channel;
- else
- c = dmabuf->write_channel;
- while(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=(u32)dmabuf->dma_handle+dmabuf->fragsize*i;
- // the card will always be doing 16bit stereo
- sg->control=dmabuf->fragsamples;
- if(state->card->pci_id == PCI_DEVICE_ID_SI_7012)
- sg->control <<= 1;
- sg->control|=CON_BUFPAD;
- // 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);
- I810_IOWRITEB(2, state->card, c->port+OFF_CR); /* reset DMA machine */
- while( I810_IOREADB(state->card, c->port+OFF_CR) & 0x02 ) ;
- I810_IOWRITEL((u32)state->card->chandma +
- c->num*sizeof(struct i810_channel),
- state->card, c->port+OFF_BDBAR);
- CIV_TO_LVI(state->card, c->port, 0);
-
- spin_unlock_irqrestore(&state->card->lock, flags);
-
- if(c != dmabuf->write_channel)
- c = dmabuf->write_channel;
- else
- c = NULL;
- }
-
- /* set the ready flag for the dma buffer */
- dmabuf->ready = 1;
-
-#ifdef DEBUG
- printk("i810_audio: prog_dmabuf, sample rate = %d, format = %d,\n\tnumfrag = %d, "
- "fragsize = %d dmasize = %d\n",
- dmabuf->rate, dmabuf->fmt, dmabuf->numfrag,
- dmabuf->fragsize, dmabuf->dmasize);
-#endif
-
- return 0;
-}
-
-static void __i810_update_lvi(struct i810_state *state, int rec)
-{
- struct dmabuf *dmabuf = &state->dmabuf;
- int x, port;
- int trigger;
- int count, fragsize;
- void (*start)(struct i810_state *);
-
- count = dmabuf->count;
- if (rec) {
- port = dmabuf->read_channel->port;
- trigger = PCM_ENABLE_INPUT;
- start = __start_adc;
- count = dmabuf->dmasize - count;
- } else {
- port = dmabuf->write_channel->port;
- trigger = PCM_ENABLE_OUTPUT;
- start = __start_dac;
- }
-
- /* Do not process partial fragments. */
- fragsize = dmabuf->fragsize;
- if (count < fragsize)
- return;
-
- /* 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, things will operate properly. Since the CIV can't
- * be written to directly for this purpose, we set the LVI to CIV + 1
- * temporarily. Once the engine has started we set the LVI to its
- * final value.
- */
- if (!dmabuf->enable && dmabuf->ready) {
- if (!(dmabuf->trigger & trigger))
- return;
-
- CIV_TO_LVI(state->card, port, 1);
-
- start(state);
- while (!(I810_IOREADB(state->card, port + OFF_CR) & ((1<<4) | (1<<2))))
- ;
- }
-
- /* MASKP2(swptr, fragsize) - 1 is the tail of our transfer */
- x = MODULOP2(MASKP2(dmabuf->swptr, fragsize) - 1, dmabuf->dmasize);
- x >>= dmabuf->fragshift;
- I810_IOWRITEB(x, state->card, port + OFF_LVI);
-}
-
-static void i810_update_lvi(struct i810_state *state, int rec)
-{
- struct dmabuf *dmabuf = &state->dmabuf;
- unsigned long flags;
-
- if(!dmabuf->ready)
- return;
- spin_lock_irqsave(&state->card->lock, flags);
- __i810_update_lvi(state, rec);
- spin_unlock_irqrestore(&state->card->lock, flags);
-}
-
-/* update buffer manangement pointers, especially, dmabuf->count and dmabuf->hwptr */
-static void i810_update_ptr(struct i810_state *state)
-{
- struct dmabuf *dmabuf = &state->dmabuf;
- unsigned hwptr;
- unsigned fragmask, dmamask;
- int diff;
-
- fragmask = MASKP2(~0, dmabuf->fragsize);
- dmamask = MODULOP2(~0, dmabuf->dmasize);
-
- /* error handling and process wake up for ADC */
- if (dmabuf->enable == ADC_RUNNING) {
- /* update hardware pointer */
- hwptr = i810_get_dma_addr(state, 1) & fragmask;
- diff = (hwptr - dmabuf->hwptr) & dmamask;
-#if defined(DEBUG_INTERRUPTS) || defined(DEBUG_MMAP)
- printk("ADC HWP %d,%d,%d\n", hwptr, dmabuf->hwptr, diff);
-#endif
- 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 (GET_CIV(state->card, PI_BASE) !=
- GET_LVI(state->card, PI_BASE)) {
- printk(KERN_WARNING "i810_audio: DMA overrun on read\n");
- dmabuf->error++;
- }
- }
- if (diff)
- wake_up(&dmabuf->wait);
- }
- /* error handling and process wake up for DAC */
- if (dmabuf->enable == DAC_RUNNING) {
- /* update hardware pointer */
- hwptr = i810_get_dma_addr(state, 0) & fragmask;
- diff = (hwptr - dmabuf->hwptr) & dmamask;
-#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 (GET_CIV(state->card, PO_BASE) !=
- GET_LVI(state->card, PO_BASE)) {
- printk(KERN_WARNING "i810_audio: DMA overrun on write\n");
- printk("i810_audio: CIV %d, LVI %d, hwptr %x, "
- "count %d\n",
- GET_CIV(state->card, PO_BASE),
- GET_LVI(state->card, PO_BASE),
- dmabuf->hwptr, dmabuf->count);
- dmabuf->error++;
- }
- }
- if (diff)
- wake_up(&dmabuf->wait);
- }
-}
-
-static inline int i810_get_free_write_space(struct i810_state *state)
-{
- struct dmabuf *dmabuf = &state->dmabuf;
- int free;
-
- i810_update_ptr(state);
- // catch underruns during playback
- if (dmabuf->count < 0) {
- dmabuf->count = 0;
- dmabuf->swptr = dmabuf->hwptr;
- }
- free = dmabuf->dmasize - dmabuf->count;
- if(free < 0)
- return(0);
- return(free);
-}
-
-static inline int i810_get_available_read_data(struct i810_state *state)
-{
- struct dmabuf *dmabuf = &state->dmabuf;
- int avail;
-
- i810_update_ptr(state);
- // catch overruns during record
- if (dmabuf->count > dmabuf->dmasize) {
- dmabuf->count = dmabuf->dmasize;
- dmabuf->swptr = dmabuf->hwptr;
- }
- avail = dmabuf->count;
- if(avail < 0)
- return(0);
- return(avail);
-}
-
-static inline void fill_partial_frag(struct dmabuf *dmabuf)
-{
- unsigned fragsize;
- unsigned swptr, len;
-
- fragsize = dmabuf->fragsize;
- swptr = dmabuf->swptr;
- len = fragsize - MODULOP2(dmabuf->swptr, fragsize);
- if (len == fragsize)
- return;
-
- memset(dmabuf->rawbuf + swptr, '\0', len);
- dmabuf->swptr = MODULOP2(swptr + len, dmabuf->dmasize);
- dmabuf->count += len;
-}
-
-static int drain_dac(struct i810_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;
- }
-
- spin_lock_irqsave(&state->card->lock, flags);
-
- fill_partial_frag(dmabuf);
-
- /*
- * 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.
- */
- dmabuf->trigger = PCM_ENABLE_OUTPUT;
- __i810_update_lvi(state, 0);
-
- spin_unlock_irqrestore(&state->card->lock, flags);
-
- add_wait_queue(&dmabuf->wait, &wait);
- for (;;) {
-
- spin_lock_irqsave(&state->card->lock, flags);
- i810_update_ptr(state);
- count = dmabuf->count;
-
- /* 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(signals_allowed ?
- TASK_INTERRUPTIBLE : TASK_UNINTERRUPTIBLE);
- spin_unlock_irqrestore(&state->card->lock, flags);
-
- if (count <= 0)
- break;
-
- if (signal_pending(current) && signals_allowed) {
- break;
- }
-
- /*
- * 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 "i810_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 void i810_channel_interrupt(struct i810_card *card)
-{
- int i, count;
-
-#ifdef DEBUG_INTERRUPTS
- printk("CHANNEL ");
-#endif
- for(i=0;i<NR_HW_CH;i++)
- {
- struct i810_state *state = card->states[i];
- struct i810_channel *c;
- struct dmabuf *dmabuf;
- unsigned long port;
- u16 status;
-
- if(!state)
- continue;
- if(!state->dmabuf.ready)
- continue;
- dmabuf = &state->dmabuf;
- if(dmabuf->enable & DAC_RUNNING) {
- c=dmabuf->write_channel;
- } else if(dmabuf->enable & ADC_RUNNING) {
- c=dmabuf->read_channel;
- } else /* This can occur going from R/W to close */
- continue;
-
- port = c->port;
-
- if(card->pci_id == PCI_DEVICE_ID_SI_7012)
- status = I810_IOREADW(card, port + OFF_PICB);
- else
- status = I810_IOREADW(card, port + OFF_SR);
-
-#ifdef DEBUG_INTERRUPTS
- printk("NUM %d PORT %X IRQ ( ST%d ", c->num, c->port, status);
-#endif
- if(status & DMA_INT_COMPLETE)
- {
- /* only wake_up() waiters if this interrupt signals
- * us being beyond a userfragsize of data open or
- * available, and i810_update_ptr() does that for
- * us
- */
- i810_update_ptr(state);
-#ifdef DEBUG_INTERRUPTS
- printk("COMP %d ", dmabuf->hwptr /
- dmabuf->fragsize);
-#endif
- }
- if(status & (DMA_INT_LVI | DMA_INT_DCH))
- {
- /* wake_up() unconditionally on LVI and DCH */
- i810_update_ptr(state);
- wake_up(&dmabuf->wait);
-#ifdef DEBUG_INTERRUPTS
- if(status & DMA_INT_LVI)
- printk("LVI ");
- if(status & DMA_INT_DCH)
- printk("DCH -");
-#endif
- count = dmabuf->count;
- if(dmabuf->enable & ADC_RUNNING)
- count = dmabuf->dmasize - count;
- if (count >= (int)dmabuf->fragsize) {
- I810_IOWRITEB(I810_IOREADB(card, port+OFF_CR) | 1, card, port+OFF_CR);
-#ifdef DEBUG_INTERRUPTS
- printk(" CONTINUE ");
-#endif
- } else {
- if (dmabuf->enable & DAC_RUNNING)
- __stop_dac(state);
- if (dmabuf->enable & ADC_RUNNING)
- __stop_adc(state);
- dmabuf->enable = 0;
-#ifdef DEBUG_INTERRUPTS
- printk(" STOP ");
-#endif
- }
- }
- if(card->pci_id == PCI_DEVICE_ID_SI_7012)
- I810_IOWRITEW(status & DMA_INT_MASK, card, port + OFF_PICB);
- else
- I810_IOWRITEW(status & DMA_INT_MASK, card, port + OFF_SR);
- }
-#ifdef DEBUG_INTERRUPTS
- printk(")\n");
-#endif
-}
-
-static irqreturn_t i810_interrupt(int irq, void *dev_id)
-{
- struct i810_card *card = dev_id;
- u32 status;
-
- spin_lock(&card->lock);
-
- status = I810_IOREADL(card, GLOB_STA);
-
- if(!(status & INT_MASK))
- {
- spin_unlock(&card->lock);
- return IRQ_NONE; /* not for us */
- }
-
- if(status & (INT_PO|INT_PI|INT_MC))
- i810_channel_interrupt(card);
-
- /* clear 'em */
- I810_IOWRITEL(status & INT_MASK, card, GLOB_STA);
- 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 i810_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
-{
- struct i810_state *state = (struct i810_state *)file->private_data;
- struct i810_card *card=state ? state->card : NULL;
- struct dmabuf *dmabuf = &state->dmabuf;
- ssize_t ret;
- unsigned long flags;
- unsigned int swptr;
- int cnt;
- int pending;
- DECLARE_WAITQUEUE(waita, current);
-
-#ifdef DEBUG2
- printk("i810_audio: i810_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;
-
- pending = 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;
- }
- cnt = i810_get_available_read_data(state);
- swptr = dmabuf->swptr;
- // 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;
- 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.
- */
- i810_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)) {
-#ifdef DEBUG
- printk(KERN_ERR "i810_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);
-#endif
- /* 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 = MODULOP2(swptr + cnt, dmabuf->dmasize);
-
- spin_lock_irqsave(&card->lock, flags);
-
- if (PM_SUSPENDED(card)) {
- spin_unlock_irqrestore(&card->lock, flags);
- continue;
- }
- dmabuf->swptr = swptr;
- pending = dmabuf->count -= cnt;
- spin_unlock_irqrestore(&card->lock, flags);
-
- count -= cnt;
- buffer += cnt;
- ret += cnt;
- }
- done:
- pending = dmabuf->dmasize - pending;
- if (dmabuf->enable || pending >= dmabuf->userfragsize)
- i810_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 i810_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
-{
- struct i810_state *state = (struct i810_state *)file->private_data;
- struct i810_card *card=state ? state->card : NULL;
- struct dmabuf *dmabuf = &state->dmabuf;
- ssize_t ret;
- unsigned long flags;
- unsigned int swptr = 0;
- int pending;
- int cnt;
- DECLARE_WAITQUEUE(waita, current);
-
-#ifdef DEBUG2
- printk("i810_audio: i810_write called, count = %d\n", count);
-#endif
-
- if (dmabuf->mapped)
- return -ENXIO;
- if (dmabuf->enable & ADC_RUNNING)
- return -ENODEV;
- if (!dmabuf->write_channel) {
- dmabuf->ready = 0;
- dmabuf->write_channel = card->alloc_pcm_channel(card);
- if(!dmabuf->write_channel)
- return -EBUSY;
- }
- if (!dmabuf->ready && (ret = prog_dmabuf(state, 0)))
- return ret;
- if (!access_ok(VERIFY_READ, buffer, count))
- return -EFAULT;
- ret = 0;
-
- pending = 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;
- }
-
- cnt = i810_get_free_write_space(state);
- swptr = dmabuf->swptr;
- /* 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 "i810_audio: i810_write: %d bytes available space\n", cnt);
-#endif
- if (cnt > count)
- cnt = count;
- 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
- */
- dmabuf->trigger = PCM_ENABLE_OUTPUT;
- i810_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. */
- if (!schedule_timeout(tmo >= 2 ? tmo : 2)) {
-#ifdef DEBUG
- printk(KERN_ERR "i810_audio: playback schedule timeout, "
- "dmasz %u fragsz %u count %i hwptr %u swptr %u\n",
- dmabuf->dmasize, dmabuf->fragsize, dmabuf->count,
- dmabuf->hwptr, dmabuf->swptr);
-#endif
- /* a buffer underrun, we delay the recovery until next time the
- while loop begin and we REALLY have data to play */
- //return ret;
- }
- 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 = MODULOP2(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;
- pending = dmabuf->count += cnt;
-
- count -= cnt;
- buffer += cnt;
- ret += cnt;
- spin_unlock_irqrestore(&state->card->lock, flags);
- }
-ret:
- if (dmabuf->enable || pending >= dmabuf->userfragsize)
- i810_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 i810_poll(struct file *file, struct poll_table_struct *wait)
-{
- struct i810_state *state = (struct i810_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);
- if (dmabuf->enable & ADC_RUNNING ||
- dmabuf->trigger & PCM_ENABLE_INPUT) {
- if (i810_get_available_read_data(state) >=
- (signed)dmabuf->userfragsize)
- mask |= POLLIN | POLLRDNORM;
- }
- if (dmabuf->enable & DAC_RUNNING ||
- dmabuf->trigger & PCM_ENABLE_OUTPUT) {
- if (i810_get_free_write_space(state) >=
- (signed)dmabuf->userfragsize)
- mask |= POLLOUT | POLLWRNORM;
- }
- spin_unlock_irqrestore(&state->card->lock, flags);
- return mask;
-}
-
-static int i810_mmap(struct file *file, struct vm_area_struct *vma)
-{
- struct i810_state *state = (struct i810_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;
-#ifdef DEBUG_MMAP
- printk("i810_audio: mmap'ed %ld bytes of data space\n", size);
-#endif
-out:
- unlock_kernel();
- return ret;
-}
-
-static int i810_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
-{
- struct i810_state *state = (struct i810_state *)file->private_data;
- struct i810_channel *c = NULL;
- struct dmabuf *dmabuf = &state->dmabuf;
- unsigned long flags;
- audio_buf_info abinfo;
- count_info cinfo;
- unsigned int i_glob_cnt;
- 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("i810_audio: i810_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 (c != NULL) {
- I810_IOWRITEB(2, state->card, c->port+OFF_CR); /* reset DMA machine */
- while ( I810_IOREADB(state->card, c->port+OFF_CR) & 2 )
- cpu_relax();
- I810_IOWRITEL((u32)state->card->chandma +
- c->num*sizeof(struct i810_channel),
- state->card, c->port+OFF_BDBAR);
- CIV_TO_LVI(state->card, c->port, 0);
- }
-
- 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 (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 */
- /* AD1886 only supports 48000, need to check that */
- if ( i810_valid_spdif_rate ( codec, val ) ) {
- /* Set DAC rate */
- i810_set_spdif_output ( state, -1, 0 );
- stop_dac(state);
- dmabuf->ready = 0;
- spin_lock_irqsave(&state->card->lock, flags);
- i810_set_dac_rate(state, val);
- spin_unlock_irqrestore(&state->card->lock, flags);
- /* Set S/PDIF transmitter rate. */
- i810_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);
- i810_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);
- i810_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);
- }
- return put_user(1, p);
-
- case SNDCTL_DSP_GETBLKSIZE:
- if (file->f_mode & FMODE_WRITE) {
- 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:
-#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 & ADC_RUNNING) {
- stop_adc(state);
- }
- } else {
- return put_user(state->card->channels, p);
- }
-
- /* ICH and ICH0 only support 2 channels */
- if ( state->card->pci_id == PCI_DEVICE_ID_INTEL_82801AA_5
- || state->card->pci_id == PCI_DEVICE_ID_INTEL_82801AB_5)
- return put_user(2, p);
-
- /* Multi-channel support was added with ICH2. Bits in */
- /* Global Status and Global Control register are now */
- /* used to indicate this. */
-
- i_glob_cnt = I810_IOREADL(state->card, GLOB_CNT);
-
- /* Current # of channels enabled */
- if ( i_glob_cnt & 0x0100000 )
- ret = 4;
- else if ( i_glob_cnt & 0x0200000 )
- ret = 6;
- else
- ret = 2;
-
- switch ( val ) {
- case 2: /* 2 channels is always supported */
- I810_IOWRITEL(i_glob_cnt & 0xffcfffff,
- state->card, GLOB_CNT);
- /* Do we need to change mixer settings???? */
- break;
- case 4: /* Supported on some chipsets, better check first */
- if ( state->card->channels >= 4 ) {
- I810_IOWRITEL((i_glob_cnt & 0xffcfffff) | 0x100000,
- state->card, GLOB_CNT);
- /* Do we need to change mixer settings??? */
- } else {
- val = ret;
- }
- break;
- case 6: /* Supported on some chipsets, better check first */
- if ( state->card->channels >= 6 ) {
- I810_IOWRITEL((i_glob_cnt & 0xffcfffff) | 0x200000,
- state->card, GLOB_CNT);
- /* Do we need to change mixer settings??? */
- } else {
- val = ret;
- }
- 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(!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 (!dmabuf->ready && (val = prog_dmabuf(state, 0)) != 0)
- return val;
- spin_lock_irqsave(&state->card->lock, flags);
- i810_update_ptr(state);
- abinfo.fragsize = dmabuf->userfragsize;
- abinfo.fragstotal = dmabuf->userfrags;
- if (dmabuf->mapped)
- abinfo.bytes = dmabuf->dmasize;
- else
- abinfo.bytes = i810_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 (!dmabuf->ready && (val = prog_dmabuf(state, 0)) != 0)
- return val;
- spin_lock_irqsave(&state->card->lock, flags);
- val = i810_get_free_write_space(state);
- cinfo.bytes = dmabuf->total_bytes;
- cinfo.ptr = dmabuf->hwptr;
- cinfo.blocks = val/dmabuf->userfragsize;
- if (dmabuf->mapped && (dmabuf->trigger & PCM_ENABLE_OUTPUT)) {
- dmabuf->count += val;
- dmabuf->swptr = (dmabuf->swptr + val) % dmabuf->dmasize;
- __i810_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 = i810_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 = i810_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;
- __i810_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
- /* silently ignore invalid PCM_ENABLE_xxx bits,
- * like the other drivers do
- */
- if (!(file->f_mode & FMODE_READ ))
- val &= ~PCM_ENABLE_INPUT;
- if (!(file->f_mode & FMODE_WRITE ))
- val &= ~PCM_ENABLE_OUTPUT;
- if((file->f_mode & FMODE_READ) && !(val & PCM_ENABLE_INPUT) && dmabuf->enable == ADC_RUNNING) {
- stop_adc(state);
- }
- if((file->f_mode & FMODE_WRITE) && !(val & PCM_ENABLE_OUTPUT) && dmabuf->enable == DAC_RUNNING) {
- stop_dac(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);
- i810_update_ptr(state);
- dmabuf->count = 0;
- dmabuf->swptr = dmabuf->hwptr;
- dmabuf->count = i810_get_free_write_space(state);
- dmabuf->swptr = (dmabuf->swptr + dmabuf->count) % dmabuf->dmasize;
- spin_unlock_irqrestore(&state->card->lock, flags);
- }
- i810_update_lvi(state, 0);
- start_dac(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);
- i810_update_ptr(state);
- dmabuf->swptr = dmabuf->hwptr;
- dmabuf->count = 0;
- spin_unlock_irqrestore(&state->card->lock, flags);
- }
- i810_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);
- i810_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 = i810_ac97_get(codec, AC97_SPDIF_CONTROL);
- val |= (ret & 0x3000);
-
- i810_ac97_set(codec, AC97_SPDIF_CONTROL, val);
- if(i810_ac97_get(codec, AC97_SPDIF_CONTROL) != val ) {
- printk(KERN_ERR "i810_audio: Unable to set S/PDIF configuration to 0x%04x.\n", val);
- return -EFAULT;
- }
- }
-#ifdef DEBUG
- else
- printk(KERN_WARNING "i810_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 "i810_audio: S/PDIF transmitter not avalible.\n");
-#endif
- val = 0;
- } else {
- val = i810_ac97_get(codec, AC97_SPDIF_CONTROL);
- }
- //return put_user((val & 0xcfff), p);
- return put_user(val, p);
-
- 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.
- */
-
- i810_set_spdif_output ( state, AC97_EA_SPSA_3_4, dmabuf->rate );
- 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 )
- i810_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;
- }
- i810_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:
-#ifdef DEBUG
- printk("SNDCTL_* -EINVAL\n");
-#endif
- return -EINVAL;
- }
- return -EINVAL;
-}
-
-static int i810_open(struct inode *inode, struct file *file)
-{
- int i = 0;
- struct i810_card *card = devs;
- struct i810_state *state = NULL;
- struct dmabuf *dmabuf = NULL;
-
- /* find an avaiable 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 i810_state *)
- kzalloc(sizeof(struct i810_state), GFP_KERNEL);
- if (state == NULL)
- return -ENOMEM;
- 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 = I810_STATE_MAGIC;
- init_waitqueue_head(&dmabuf->wait);
- mutex_init(&state->open_mutex);
- 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;
- i810_set_adc_rate(state, 8000);
- }
- if(file->f_mode & FMODE_WRITE) {
- if((dmabuf->write_channel = card->alloc_pcm_channel(card)) == NULL) {
- /* make sure we free the record channel allocated above */
- if(file->f_mode & FMODE_READ)
- card->free_pcm_channel(card,dmabuf->read_channel->num);
- 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 ( spdif_locked ) {
- i810_set_dac_rate(state, spdif_locked);
- i810_set_spdif_output(state, AC97_EA_SPSA_3_4, spdif_locked);
- } else {
- i810_set_dac_rate(state, 8000);
- /* Put the ACLink in 2 channel mode by default */
- i = I810_IOREADL(card, GLOB_CNT);
- I810_IOWRITEL(i & 0xffcfffff, card, GLOB_CNT);
- }
- }
-
- /* 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 |= I810_FMT_16BIT | I810_FMT_STEREO;
- dmabuf->ossfragsize = 0;
- dmabuf->ossmaxfrags = 0;
- dmabuf->subdivision = 0;
-
- state->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE);
-
- return nonseekable_open(inode, file);
-}
-
-static int i810_release(struct inode *inode, struct file *file)
-{
- struct i810_state *state = (struct i810_state *)file->private_data;
- struct i810_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 & PCM_ENABLE_INPUT) {
- stop_adc(state);
- }
- spin_lock_irqsave(&card->lock, flags);
- dealloc_dmabuf(state);
- if (file->f_mode & FMODE_WRITE) {
- 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 i810_audio_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .read = i810_read,
- .write = i810_write,
- .poll = i810_poll,
- .ioctl = i810_ioctl,
- .mmap = i810_mmap,
- .open = i810_open,
- .release = i810_release,
-};
-
-/* Write AC97 codec registers */
-
-static u16 i810_ac97_get_mmio(struct ac97_codec *dev, u8 reg)
-{
- struct i810_card *card = dev->private_data;
- int count = 100;
- u16 reg_set = IO_REG_OFF(dev) | (reg&0x7f);
-
- while(count-- && (readb(card->iobase_mmio + CAS) & 1))
- udelay(1);
-
-#ifdef DEBUG_MMIO
- {
- u16 ans = readw(card->ac97base_mmio + reg_set);
- printk(KERN_DEBUG "i810_audio: ac97_get_mmio(%d) -> 0x%04X\n", ((int) reg_set) & 0xffff, (u32) ans);
- return ans;
- }
-#else
- return readw(card->ac97base_mmio + reg_set);
-#endif
-}
-
-static u16 i810_ac97_get_io(struct ac97_codec *dev, u8 reg)
-{
- struct i810_card *card = dev->private_data;
- int count = 100;
- u16 reg_set = IO_REG_OFF(dev) | (reg&0x7f);
-
- while(count-- && (I810_IOREADB(card, CAS) & 1))
- udelay(1);
-
- return inw(card->ac97base + reg_set);
-}
-
-static void i810_ac97_set_mmio(struct ac97_codec *dev, u8 reg, u16 data)
-{
- struct i810_card *card = dev->private_data;
- int count = 100;
- u16 reg_set = IO_REG_OFF(dev) | (reg&0x7f);
-
- while(count-- && (readb(card->iobase_mmio + CAS) & 1))
- udelay(1);
-
- writew(data, card->ac97base_mmio + reg_set);
-
-#ifdef DEBUG_MMIO
- printk(KERN_DEBUG "i810_audio: ac97_set_mmio(0x%04X, %d)\n", (u32) data, ((int) reg_set) & 0xffff);
-#endif
-}
-
-static void i810_ac97_set_io(struct ac97_codec *dev, u8 reg, u16 data)
-{
- struct i810_card *card = dev->private_data;
- int count = 100;
- u16 reg_set = IO_REG_OFF(dev) | (reg&0x7f);
-
- while(count-- && (I810_IOREADB(card, CAS) & 1))
- udelay(1);
-
- outw(data, card->ac97base + reg_set);
-}
-
-static u16 i810_ac97_get(struct ac97_codec *dev, u8 reg)
-{
- struct i810_card *card = dev->private_data;
- u16 ret;
-
- spin_lock(&card->ac97_lock);
- if (card->use_mmio) {
- ret = i810_ac97_get_mmio(dev, reg);
- }
- else {
- ret = i810_ac97_get_io(dev, reg);
- }
- spin_unlock(&card->ac97_lock);
-
- return ret;
-}
-
-static void i810_ac97_set(struct ac97_codec *dev, u8 reg, u16 data)
-{
- struct i810_card *card = dev->private_data;
-
- spin_lock(&card->ac97_lock);
- if (card->use_mmio) {
- i810_ac97_set_mmio(dev, reg, data);
- }
- else {
- i810_ac97_set_io(dev, reg, data);
- }
- spin_unlock(&card->ac97_lock);
-}
-
-
-/* OSS /dev/mixer file operation methods */
-
-static int i810_open_mixdev(struct inode *inode, struct file *file)
-{
- int i;
- int minor = iminor(inode);
- struct i810_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 i810_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 i810_mixer_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .ioctl = i810_ioctl_mixdev,
- .open = i810_open_mixdev,
-};
-
-/* AC97 codec initialisation. These small functions exist so we don't
- duplicate code between module init and apm resume */
-
-static inline int i810_ac97_exists(struct i810_card *card, int ac97_number)
-{
- u32 reg = I810_IOREADL(card, GLOB_STA);
- switch (ac97_number) {
- case 0:
- return reg & (1<<8);
- case 1:
- return reg & (1<<9);
- case 2:
- return reg & (1<<28);
- }
- return 0;
-}
-
-static inline int i810_ac97_enable_variable_rate(struct ac97_codec *codec)
-{
- i810_ac97_set(codec, AC97_EXTENDED_STATUS, 9);
- i810_ac97_set(codec,AC97_EXTENDED_STATUS,
- i810_ac97_get(codec, AC97_EXTENDED_STATUS)|0xE800);
-
- return (i810_ac97_get(codec, AC97_EXTENDED_STATUS)&1);
-}
-
-
-static int i810_ac97_probe_and_powerup(struct i810_card *card,struct ac97_codec *codec)
-{
- /* Returns 0 on failure */
- int i;
-
- if (ac97_probe_codec(codec) == 0) return 0;
-
- /* power it all up */
- i810_ac97_set(codec, AC97_POWER_CONTROL,
- i810_ac97_get(codec, AC97_POWER_CONTROL) & ~0x7f00);
-
- /* wait for analog ready */
- for (i=100; i && ((i810_ac97_get(codec, AC97_POWER_CONTROL) & 0xf) != 0xf); i--)
- {
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(HZ/20);
- }
- return i;
-}
-
-static int is_new_ich(u16 pci_id)
-{
- switch (pci_id) {
- case PCI_DEVICE_ID_INTEL_82801DB_5:
- case PCI_DEVICE_ID_INTEL_82801EB_5:
- case PCI_DEVICE_ID_INTEL_ESB_5:
- case PCI_DEVICE_ID_INTEL_ICH6_18:
- return 1;
- default:
- break;
- }
-
- return 0;
-}
-
-static inline int ich_use_mmio(struct i810_card *card)
-{
- return is_new_ich(card->pci_id) && card->use_mmio;
-}
-
-/**
- * i810_ac97_power_up_bus - bring up AC97 link
- * @card : ICH audio device to power up
- *
- * Bring up the ACLink AC97 codec bus
- */
-
-static int i810_ac97_power_up_bus(struct i810_card *card)
-{
- u32 reg = I810_IOREADL(card, GLOB_CNT);
- int i;
- int primary_codec_id = 0;
-
- if((reg&2)==0) /* Cold required */
- reg|=2;
- else
- reg|=4; /* Warm */
-
- reg&=~8; /* ACLink on */
-
- /* At this point we deassert AC_RESET # */
- I810_IOWRITEL(reg , card, GLOB_CNT);
-
- /* We must now allow time for the Codec initialisation.
- 600mS is the specified time */
-
- for(i=0;i<10;i++)
- {
- if((I810_IOREADL(card, GLOB_CNT)&4)==0)
- break;
-
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(HZ/20);
- }
- if(i==10)
- {
- printk(KERN_ERR "i810_audio: AC'97 reset failed.\n");
- return 0;
- }
-
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(HZ/2);
-
- /*
- * See if the primary codec comes ready. This must happen
- * before we start doing DMA stuff
- */
- /* see i810_ac97_init for the next 10 lines (jsaw) */
- if (card->use_mmio)
- readw(card->ac97base_mmio);
- else
- inw(card->ac97base);
- if (ich_use_mmio(card)) {
- primary_codec_id = (int) readl(card->iobase_mmio + SDM) & 0x3;
- printk(KERN_INFO "i810_audio: Primary codec has ID %d\n",
- primary_codec_id);
- }
-
- if(! i810_ac97_exists(card, primary_codec_id))
- {
- printk(KERN_INFO "i810_audio: Codec not ready.. wait.. ");
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(HZ); /* actually 600mS by the spec */
-
- if(i810_ac97_exists(card, primary_codec_id))
- printk("OK\n");
- else
- printk("no response.\n");
- }
- if (card->use_mmio)
- readw(card->ac97base_mmio);
- else
- inw(card->ac97base);
- return 1;
-}
-
-static int __devinit i810_ac97_init(struct i810_card *card)
-{
- int num_ac97 = 0;
- int ac97_id;
- int total_channels = 0;
- int nr_ac97_max = card_cap[card->pci_id_internal].nr_ac97;
- struct ac97_codec *codec;
- u16 eid;
- u32 reg;
-
- if(!i810_ac97_power_up_bus(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.... */
-
- card->channels = 2;
- reg = I810_IOREADL(card, GLOB_STA);
- if ( reg & 0x0200000 )
- card->channels = 6;
- else if ( reg & 0x0100000 )
- card->channels = 4;
- printk(KERN_INFO "i810_audio: Audio Controller supports %d channels.\n", card->channels);
- printk(KERN_INFO "i810_audio: Defaulting to base 2 channel mode.\n");
- reg = I810_IOREADL(card, GLOB_CNT);
- I810_IOWRITEL(reg & 0xffcfffff, card, GLOB_CNT);
-
- for (num_ac97 = 0; num_ac97 < NR_AC97; num_ac97++)
- card->ac97_codec[num_ac97] = NULL;
-
- /*@FIXME I don't know, if I'm playing to safe here... (jsaw) */
- if ((nr_ac97_max > 2) && !card->use_mmio) nr_ac97_max = 2;
-
- for (num_ac97 = 0; num_ac97 < nr_ac97_max; num_ac97++) {
- /* codec reset */
- printk(KERN_INFO "i810_audio: Resetting connection %d\n", num_ac97);
- if (card->use_mmio)
- readw(card->ac97base_mmio + 0x80*num_ac97);
- else
- inw(card->ac97base + 0x80*num_ac97);
-
- /* If we have the SDATA_IN Map Register, as on ICH4, we
- do not loop thru all possible codec IDs but thru all
- possible IO channels. Bit 0:1 of SDM then holds the
- last codec ID spoken to.
- */
- if (ich_use_mmio(card)) {
- ac97_id = (int) readl(card->iobase_mmio + SDM) & 0x3;
- printk(KERN_INFO "i810_audio: Connection %d with codec id %d\n",
- num_ac97, ac97_id);
- }
- else {
- ac97_id = num_ac97;
- }
-
- /* 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 (!i810_ac97_exists(card, ac97_id)) {
- if(num_ac97 == 0)
- printk(KERN_ERR "i810_audio: Primary codec not ready.\n");
- }
-
- 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 = ac97_id;
- card->ac97_id_map[ac97_id] = num_ac97 * 0x80;
-
- if (card->use_mmio) {
- codec->codec_read = i810_ac97_get_mmio;
- codec->codec_write = i810_ac97_set_mmio;
- }
- else {
- codec->codec_read = i810_ac97_get_io;
- codec->codec_write = i810_ac97_set_io;
- }
-
- if(!i810_ac97_probe_and_powerup(card,codec)) {
- printk(KERN_ERR "i810_audio: timed out waiting for codec %d analog ready.\n", ac97_id);
- ac97_release_codec(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 = i810_ac97_get(codec, AC97_EXTENDED_ID);
-
- if(eid==0xFFFF)
- {
- printk(KERN_WARNING "i810_audio: no codec attached ?\n");
- ac97_release_codec(codec);
- break;
- }
-
- /* Check for an AC97 1.0 soft modem (ID1) */
-
- if(codec->modem)
- {
- printk(KERN_WARNING "i810_audio: codec %d is a softmodem - skipping.\n", ac97_id);
- ac97_release_codec(codec);
- continue;
- }
-
- card->ac97_features = eid;
-
- /* Now check the codec for useful features to make up for
- the dumbness of the 810 hardware engine */
-
- if(!(eid&0x0001))
- printk(KERN_WARNING "i810_audio: only 48Khz playback available.\n");
- else
- {
- if(!i810_ac97_enable_variable_rate(codec)) {
- printk(KERN_WARNING "i810_audio: Codec refused to allow VRA, using 48Khz only.\n");
- card->ac97_features&=~1;
- }
- }
-
- /* Turn on the amplifier */
-
- codec->codec_write(codec, AC97_POWER_CONTROL,
- codec->codec_read(codec, AC97_POWER_CONTROL) & ~0x8000);
-
- /* 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(eid & 0x200) { /* GOOD, AMAP support */
- if (eid & 0x0080) /* L/R Surround channels */
- total_channels += 2;
- if (eid & 0x0140) /* LFE and Center channels */
- total_channels += 2;
- printk("i810_audio: AC'97 codec %d supports AMAP, total channels = %d\n", ac97_id, total_channels);
- } else if (eid & 0x0400) { /* this only works on 2.2 compliant codecs */
- eid &= 0xffcf;
- if((eid & 0xc000) != 0) {
- switch ( total_channels ) {
- case 2:
- /* Set dsa1, dsa0 to 01 */
- eid |= 0x0010;
- break;
- case 4:
- /* Set dsa1, dsa0 to 10 */
- eid |= 0x0020;
- break;
- case 6:
- /* Set dsa1, dsa0 to 11 */
- eid |= 0x0030;
- break;
- }
- total_channels += 2;
- }
- i810_ac97_set(codec, AC97_EXTENDED_ID, eid);
- eid = i810_ac97_get(codec, AC97_EXTENDED_ID);
- printk("i810_audio: AC'97 codec %d, new EID value = 0x%04x\n", ac97_id, eid);
- if (eid & 0x0080) /* L/R Surround channels */
- total_channels += 2;
- if (eid & 0x0140) /* LFE and Center channels */
- total_channels += 2;
- printk("i810_audio: AC'97 codec %d, DAC map configured, total channels = %d\n", ac97_id, total_channels);
- } else {
- printk("i810_audio: AC'97 codec %d Unable to map surround DAC's (or DAC's not present), total channels = %d\n", ac97_id, total_channels);
- }
-
- if ((codec->dev_mixer = register_sound_mixer(&i810_mixer_fops, -1)) < 0) {
- printk(KERN_ERR "i810_audio: couldn't register mixer!\n");
- ac97_release_codec(codec);
- break;
- }
-
- card->ac97_codec[num_ac97] = codec;
- }
-
- /* tune up the primary codec */
- ac97_tune_hardware(card->pci_dev, ac97_quirks, ac97_quirk);
-
- /* 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 i810_configure_clocking (void)
-{
- struct i810_card *card;
- struct i810_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 i810 in a machine? Besides, clocking is global, so unless
- * someone actually thinks more than one i810 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 i810_state *)
- kzalloc(sizeof(struct i810_state), GFP_KERNEL);
- if (state == NULL)
- return;
- dmabuf = &state->dmabuf;
-
- dmabuf->write_channel = card->alloc_pcm_channel(card);
- state->virt = 0;
- state->card = card;
- state->magic = I810_STATE_MAGIC;
- init_waitqueue_head(&dmabuf->wait);
- mutex_init(&state->open_mutex);
- dmabuf->fmt = I810_FMT_STEREO | I810_FMT_16BIT;
- dmabuf->trigger = PCM_ENABLE_OUTPUT;
- i810_set_spdif_output(state, -1, 0);
- i810_set_dac_channels(state, 2);
- i810_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;
- CIV_TO_LVI(card, dmabuf->write_channel->port, -1);
- local_irq_save(flags);
- start_dac(state);
- offset = i810_get_dma_addr(state, 0);
- mdelay(50);
- new_offset = i810_get_dma_addr(state, 0);
- stop_dac(state);
- local_irq_restore(flags);
- i = new_offset - offset;
-#ifdef DEBUG_INTERRUPTS
- printk("i810_audio: %d bytes in 50 milliseconds\n", i);
-#endif
- if(i == 0)
- goto config_out;
- i = i / 4 * 20;
- if (i > 48500 || i < 47500) {
- clocking = clocking * clocking / i;
- printk("i810_audio: setting clocking to %d\n", clocking);
- }
-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 i810_probe(struct pci_dev *pci_dev, const struct pci_device_id *pci_id)
-{
- struct i810_card *card;
-
- if (pci_enable_device(pci_dev))
- return -EIO;
-
- if (pci_set_dma_mask(pci_dev, I810_DMA_MASK)) {
- printk(KERN_ERR "i810_audio: architecture does not support"
- " 32bit PCI busmaster DMA\n");
- return -ENODEV;
- }
-
- if ((card = kzalloc(sizeof(struct i810_card), GFP_KERNEL)) == NULL) {
- printk(KERN_ERR "i810_audio: out of memory\n");
- return -ENOMEM;
- }
-
- card->initializing = 1;
- card->pci_dev = pci_dev;
- card->pci_id = pci_id->device;
- card->ac97base = pci_resource_start (pci_dev, 0);
- card->iobase = pci_resource_start (pci_dev, 1);
-
- if (!(card->ac97base) || !(card->iobase)) {
- card->ac97base = 0;
- card->iobase = 0;
- }
-
- /* if chipset could have mmio capability, check it */
- if (card_cap[pci_id->driver_data].flags & CAP_MMIO) {
- card->ac97base_mmio_phys = pci_resource_start (pci_dev, 2);
- card->iobase_mmio_phys = pci_resource_start (pci_dev, 3);
-
- if ((card->ac97base_mmio_phys) && (card->iobase_mmio_phys)) {
- card->use_mmio = 1;
- }
- else {
- card->ac97base_mmio_phys = 0;
- card->iobase_mmio_phys = 0;
- }
- }
-
- if (!(card->use_mmio) && (!(card->iobase) || !(card->ac97base))) {
- printk(KERN_ERR "i810_audio: No I/O resources available.\n");
- goto out_mem;
- }
-
- card->irq = pci_dev->irq;
- card->next = devs;
- card->magic = I810_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 "i810: %s found at IO 0x%04lx and 0x%04lx, "
- "MEM 0x%04lx and 0x%04lx, IRQ %d\n",
- card_names[pci_id->driver_data],
- card->iobase, card->ac97base,
- card->ac97base_mmio_phys, card->iobase_mmio_phys,
- card->irq);
-
- card->alloc_pcm_channel = i810_alloc_pcm_channel;
- card->alloc_rec_pcm_channel = i810_alloc_rec_pcm_channel;
- card->alloc_rec_mic_channel = i810_alloc_rec_mic_channel;
- card->free_pcm_channel = i810_free_pcm_channel;
-
- if ((card->channel = pci_alloc_consistent(pci_dev,
- sizeof(struct i810_channel)*NR_HW_CH, &card->chandma)) == NULL) {
- printk(KERN_ERR "i810: cannot allocate channel DMA memory\n");
- goto out_mem;
- }
-
- { /* We may dispose of this altogether some time soon, so... */
- struct i810_channel *cp = card->channel;
-
- cp[0].offset = 0;
- cp[0].port = 0x00;
- cp[0].num = 0;
- cp[1].offset = 0;
- cp[1].port = 0x10;
- cp[1].num = 1;
- cp[2].offset = 0;
- cp[2].port = 0x20;
- cp[2].num = 2;
- }
-
- /* claim our iospace and irq */
- if (!request_region(card->iobase, 64, card_names[pci_id->driver_data])) {
- printk(KERN_ERR "i810_audio: unable to allocate region %lx\n", card->iobase);
- goto out_region1;
- }
- if (!request_region(card->ac97base, 256, card_names[pci_id->driver_data])) {
- printk(KERN_ERR "i810_audio: unable to allocate region %lx\n", card->ac97base);
- goto out_region2;
- }
-
- if (card->use_mmio) {
- if (request_mem_region(card->ac97base_mmio_phys, 512, "ich_audio MMBAR")) {
- if ((card->ac97base_mmio = ioremap(card->ac97base_mmio_phys, 512))) { /*@FIXME can ioremap fail? don't know (jsaw) */
- if (request_mem_region(card->iobase_mmio_phys, 256, "ich_audio MBBAR")) {
- if ((card->iobase_mmio = ioremap(card->iobase_mmio_phys, 256))) {
- printk(KERN_INFO "i810: %s mmio at 0x%04lx and 0x%04lx\n",
- card_names[pci_id->driver_data],
- (unsigned long) card->ac97base_mmio,
- (unsigned long) card->iobase_mmio);
- }
- else {
- iounmap(card->ac97base_mmio);
- release_mem_region(card->ac97base_mmio_phys, 512);
- release_mem_region(card->iobase_mmio_phys, 512);
- card->use_mmio = 0;
- }
- }
- else {
- iounmap(card->ac97base_mmio);
- release_mem_region(card->ac97base_mmio_phys, 512);
- card->use_mmio = 0;
- }
- }
- }
- else {
- card->use_mmio = 0;
- }
- }
-
- /* initialize AC97 codec and register /dev/mixer */
- if (i810_ac97_init(card) <= 0)
- goto out_iospace;
- pci_set_drvdata(pci_dev, card);
-
- if(clocking == 0) {
- clocking = 48000;
- i810_configure_clocking();
- }
-
- /* register /dev/dsp */
- if ((card->dev_audio = register_sound_dsp(&i810_audio_fops, -1)) < 0) {
- int i;
- printk(KERN_ERR "i810_audio: couldn't register DSP device!\n");
- 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]);
- }
- goto out_iospace;
- }
-
- if (request_irq(card->irq, &i810_interrupt, IRQF_SHARED,
- card_names[pci_id->driver_data], card)) {
- printk(KERN_ERR "i810_audio: unable to allocate irq %d\n", card->irq);
- goto out_iospace;
- }
-
-
- card->initializing = 0;
- return 0;
-
-out_iospace:
- if (card->use_mmio) {
- iounmap(card->ac97base_mmio);
- iounmap(card->iobase_mmio);
- release_mem_region(card->ac97base_mmio_phys, 512);
- release_mem_region(card->iobase_mmio_phys, 256);
- }
- release_region(card->ac97base, 256);
-out_region2:
- release_region(card->iobase, 64);
-out_region1:
- pci_free_consistent(pci_dev, sizeof(struct i810_channel)*NR_HW_CH,
- card->channel, card->chandma);
-out_mem:
- kfree(card);
- return -ENODEV;
-}
-
-static void __devexit i810_remove(struct pci_dev *pci_dev)
-{
- int i;
- struct i810_card *card = pci_get_drvdata(pci_dev);
- /* free hardware resources */
- free_irq(card->irq, devs);
- release_region(card->iobase, 64);
- release_region(card->ac97base, 256);
- pci_free_consistent(pci_dev, sizeof(struct i810_channel)*NR_HW_CH,
- card->channel, card->chandma);
- if (card->use_mmio) {
- iounmap(card->ac97base_mmio);
- iounmap(card->iobase_mmio);
- release_mem_region(card->ac97base_mmio_phys, 512);
- release_mem_region(card->iobase_mmio_phys, 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 i810_pm_suspend(struct pci_dev *dev, pm_message_t pm_state)
-{
- struct i810_card *card = pci_get_drvdata(dev);
- struct i810_state *state;
- unsigned long flags;
- struct dmabuf *dmabuf;
- int i,num_ac97;
-#ifdef DEBUG
- printk("i810_audio: i810_pm_suspend called\n");
-#endif
- 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 i810_pm_resume(struct pci_dev *dev)
-{
- int num_ac97,i=0;
- struct i810_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 */
-
- i810_ac97_power_up_bus(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 || !i810_ac97_exists(card,num_ac97)) {
- if(num_ac97) continue;
- else BUG();
- }
- if(!i810_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(!i810_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 i810_state * state=card->states[i];
- if(state) {
- if(state->pm_saved_adc_rate)
- i810_set_adc_rate(state,state->pm_saved_adc_rate);
- if(state->pm_saved_dac_rate)
- i810_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 i810_state *state = card->states[i];
- if(state) wake_up(&state->dmabuf.wait);
- }
-
- return 0;
-}
-#endif /* CONFIG_PM */
-
-MODULE_AUTHOR("The Linux kernel team");
-MODULE_DESCRIPTION("Intel 810 audio support");
-MODULE_LICENSE("GPL");
-module_param(ftsodell, int, 0444);
-module_param(clocking, uint, 0444);
-module_param(strict_clocking, int, 0444);
-module_param(spdif_locked, int, 0444);
-
-#define I810_MODULE_NAME "i810_audio"
-
-static struct pci_driver i810_pci_driver = {
- .name = I810_MODULE_NAME,
- .id_table = i810_pci_tbl,
- .probe = i810_probe,
- .remove = __devexit_p(i810_remove),
-#ifdef CONFIG_PM
- .suspend = i810_pm_suspend,
- .resume = i810_pm_resume,
-#endif /* CONFIG_PM */
-};
-
-
-static int __init i810_init_module (void)
-{
- int retval;
-
- printk(KERN_INFO "Intel 810 + AC97 Audio, version "
- DRIVER_VERSION ", " __TIME__ " " __DATE__ "\n");
-
- retval = pci_register_driver(&i810_pci_driver);
- if (retval)
- return retval;
-
- if(ftsodell != 0) {
- printk("i810_audio: ftsodell is now a deprecated option.\n");
- }
- if(spdif_locked > 0 ) {
- if(spdif_locked == 32000 || spdif_locked == 44100 || spdif_locked == 48000) {
- printk("i810_audio: Enabling S/PDIF at sample rate %dHz.\n", spdif_locked);
- } else {
- printk("i810_audio: S/PDIF can only be locked to 32000, 44100, or 48000Hz.\n");
- spdif_locked = 0;
- }
- }
-
- return 0;
-}
-
-static void __exit i810_cleanup_module (void)
-{
- pci_unregister_driver(&i810_pci_driver);
-}
-
-module_init(i810_init_module);
-module_exit(i810_cleanup_module);
-
-/*
-Local Variables:
-c-basic-offset: 8
-End:
-*/