diff options
Diffstat (limited to 'drivers/sound/cmpci.c')
| -rw-r--r-- | drivers/sound/cmpci.c | 2391 |
1 files changed, 2391 insertions, 0 deletions
diff --git a/drivers/sound/cmpci.c b/drivers/sound/cmpci.c new file mode 100644 index 000000000..f4befd5a3 --- /dev/null +++ b/drivers/sound/cmpci.c @@ -0,0 +1,2391 @@ +/*****************************************************************************/ + +/* + * cmpci.c -- C-Media PCI audio driver. + * + * Copyright (C) 1999 ChenLi Tien (cltien@home.com) + * + * Based on the PCI drivers by Thomas Sailer (sailer@ife.ee.ethz.ch) + * + * 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. + * + * Special thanks to David C. Niemi + * + * + * Module command line parameters: + * none so far + * + * + * Supported devices: + * /dev/dsp standard /dev/dsp device, (mostly) OSS compatible + * /dev/mixer standard /dev/mixer device, (mostly) OSS compatible + * /dev/midi simple MIDI UART interface, no ioctl + * + * The card has both an FM and a Wavetable synth, but I have to figure + * out first how to drive them... + * + * Revision history + * 06.05.98 0.1 Initial release + * 10.05.98 0.2 Fixed many bugs, esp. ADC rate calculation + * First stab at a simple midi interface (no bells&whistles) + * 13.05.98 0.3 Fix stupid cut&paste error: set_adc_rate was called instead of + * set_dac_rate in the FMODE_WRITE case in cm_open + * Fix hwptr out of bounds (now mpg123 works) + * 14.05.98 0.4 Don't allow excessive interrupt rates + * 08.06.98 0.5 First release using Alan Cox' soundcore instead of miscdevice + * 03.08.98 0.6 Do not include modversions.h + * Now mixer behaviour can basically be selected between + * "OSS documented" and "OSS actual" behaviour + * 31.08.98 0.7 Fix realplayer problems - dac.count issues + * 10.12.98 0.8 Fix drain_dac trying to wait on not yet initialized DMA + * 16.12.98 0.9 Fix a few f_file & FMODE_ bugs + * 06.01.99 0.10 remove the silly SA_INTERRUPT flag. + * hopefully killed the egcs section type conflict + * 12.03.99 0.11 cinfo.blocks should be reset after GETxPTR ioctl. + * reported by Johan Maes <joma@telindus.be> + * 22.03.99 0.12 return EAGAIN instead of EBUSY when O_NONBLOCK + * read/write cannot be executed + * + */ + +/*****************************************************************************/ + +#include <linux/version.h> +#include <linux/module.h> +#include <linux/string.h> +#include <linux/ioport.h> +#include <linux/sched.h> +#include <linux/delay.h> +#include <linux/sound.h> +#include <linux/malloc.h> +#include <linux/soundcard.h> +#include <linux/pci.h> +#include <asm/io.h> +#include <asm/dma.h> +#include <linux/init.h> +#include <linux/poll.h> +#include <asm/spinlock.h> +#include <asm/uaccess.h> +#include <asm/hardirq.h> + +#include "dm.h" + +/* --------------------------------------------------------------------- */ + +#undef OSS_DOCUMENTED_MIXER_SEMANTICS + +/* --------------------------------------------------------------------- */ + +#ifndef PCI_VENDOR_ID_CMEDIA +#define PCI_VENDOR_ID_CMEDIA 0x13F6 +#endif +#ifndef PCI_DEVICE_ID_CMEDIA_CM8338A +#define PCI_DEVICE_ID_CMEDIA_CM8338A 0x0100 +#endif +#ifndef PCI_DEVICE_ID_CMEDIA_CM8338B +#define PCI_DEVICE_ID_CMEDIA_CM8338B 0x0101 +#endif +#ifndef PCI_DEVICE_ID_CMEDIA_CM8738 +#define PCI_DEVICE_ID_CMEDIA_CM8738 0x0111 +#endif + +#define CM_MAGIC ((PCI_VENDOR_ID_CMEDIA<<16)|PCI_DEVICE_ID_CMEDIA_CM8338A) + +/* + * CM8338 registers definition + */ + +#define CODEC_CMI_FUNCTRL0 (0x00) +#define CODEC_CMI_FUNCTRL1 (0x04) +#define CODEC_CMI_CHFORMAT (0x08) +#define CODEC_CMI_INT_HLDCLR (0x0C) +#define CODEC_CMI_INT_STATUS (0x10) +#define CODEC_CMI_LEGACY_CTRL (0x14) +#define CODEC_CMI_MISC_CTRL (0x18) +#define CODEC_CMI_TDMA_POS (0x1C) +#define CODEC_CMI_MIXER (0x20) +#define CODEC_SB16_DATA (0x22) +#define CODEC_SB16_ADDR (0x23) +#define CODEC_CMI_MIXER1 (0x24) +#define CODEC_CMI_MIXER2 (0x25) +#define CODEC_CMI_AUX_VOL (0x26) +#define CODEC_CMI_MISC (0x27) +#define CODEC_CMI_AC97 (0x28) + +#define CODEC_CMI_CH0_FRAME1 (0x80) +#define CODEC_CMI_CH0_FRAME2 (0x84) +#define CODEC_CMI_CH1_FRAME1 (0x88) +#define CODEC_CMI_CH1_FRAME2 (0x8C) + +#define CODEC_CMI_EXT_REG (0xF0) +#define UCHAR unsigned char +/* +** Mixer registers for SB16 +*/ + +#define DSP_MIX_DATARESETIDX ((UCHAR)(0x00)) + +#define DSP_MIX_MASTERVOLIDX_L ((UCHAR)(0x30)) +#define DSP_MIX_MASTERVOLIDX_R ((UCHAR)(0x31)) +#define DSP_MIX_VOICEVOLIDX_L ((UCHAR)(0x32)) +#define DSP_MIX_VOICEVOLIDX_R ((UCHAR)(0x33)) +#define DSP_MIX_FMVOLIDX_L ((UCHAR)(0x34)) +#define DSP_MIX_FMVOLIDX_R ((UCHAR)(0x35)) +#define DSP_MIX_CDVOLIDX_L ((UCHAR)(0x36)) +#define DSP_MIX_CDVOLIDX_R ((UCHAR)(0x37)) +#define DSP_MIX_LINEVOLIDX_L ((UCHAR)(0x38)) +#define DSP_MIX_LINEVOLIDX_R ((UCHAR)(0x39)) + +#define DSP_MIX_MICVOLIDX ((UCHAR)(0x3A)) +#define DSP_MIX_SPKRVOLIDX ((UCHAR)(0x3B)) + +#define DSP_MIX_OUTMIXIDX ((UCHAR)(0x3C)) + +#define DSP_MIX_ADCMIXIDX_L ((UCHAR)(0x3D)) +#define DSP_MIX_ADCMIXIDX_R ((UCHAR)(0x3E)) + +#define DSP_MIX_INGAINIDX_L ((UCHAR)(0x3F)) +#define DSP_MIX_INGAINIDX_R ((UCHAR)(0x40)) +#define DSP_MIX_OUTGAINIDX_L ((UCHAR)(0x41)) +#define DSP_MIX_OUTGAINIDX_R ((UCHAR)(0x42)) + +#define DSP_MIX_AGCIDX ((UCHAR)(0x43)) + +#define DSP_MIX_TREBLEIDX_L ((UCHAR)(0x44)) +#define DSP_MIX_TREBLEIDX_R ((UCHAR)(0x45)) +#define DSP_MIX_BASSIDX_L ((UCHAR)(0x46)) +#define DSP_MIX_BASSIDX_R ((UCHAR)(0x47)) +#define CM_CH0_RESET 0x04 +#define CM_CH1_RESET 0x08 +#define CM_EXTENT_CODEC 0x100 +#define CM_EXTENT_MIDI 0x2 +#define CM_EXTENT_SYNTH 0x4 +#define CM_INT_CH0 1 +#define CM_INT_CH1 2 + +#define CM_CFMT_STEREO 0x01 +#define CM_CFMT_16BIT 0x02 +#define CM_CFMT_MASK 0x03 +#define CM_CFMT_DACSHIFT 0 +#define CM_CFMT_ADCSHIFT 2 + +static const unsigned sample_size[] = { 1, 2, 2, 4 }; +static const unsigned sample_shift[] = { 0, 1, 1, 2 }; + +#define CM_CENABLE_RE 0x2 +#define CM_CENABLE_PE 0x1 + + +/* MIDI buffer sizes */ + +#define MIDIINBUF 256 +#define MIDIOUTBUF 256 + +#define FMODE_MIDI_SHIFT 2 +#define FMODE_MIDI_READ (FMODE_READ << FMODE_MIDI_SHIFT) +#define FMODE_MIDI_WRITE (FMODE_WRITE << FMODE_MIDI_SHIFT) + +#define FMODE_DMFM 0x10 + +#define SND_DEV_DSP16 5 + +/* --------------------------------------------------------------------- */ + +struct cm_state { + /* magic */ + unsigned int magic; + + /* we keep cm cards in a linked list */ + struct cm_state *next; + + /* soundcore stuff */ + int dev_audio; + int dev_mixer; + int dev_midi; + int dev_dmfm; + + /* hardware resources */ + unsigned int iosb, iobase, iosynth, iomidi, iogame, irq; + + /* mixer stuff */ + struct { + unsigned int modcnt; +#ifndef OSS_DOCUMENTED_MIXER_SEMANTICS + unsigned short vol[13]; +#endif /* OSS_DOCUMENTED_MIXER_SEMANTICS */ + } mix; + + /* wave stuff */ + unsigned int rateadc, ratedac; + unsigned char fmt, enable; + + spinlock_t lock; + struct semaphore open_sem; + mode_t open_mode; + wait_queue_head_t open_wait; + + struct dmabuf { + void *rawbuf; + unsigned buforder; + unsigned numfrag; + unsigned fragshift; + unsigned hwptr, swptr; + unsigned total_bytes; + int count; + unsigned error; /* over/underrun */ + wait_queue_head_t wait; + /* redundant, but makes calculations easier */ + unsigned fragsize; + unsigned dmasize; + unsigned fragsamples; + /* OSS stuff */ + unsigned mapped:1; + unsigned ready:1; + unsigned endcleared:1; + unsigned ossfragshift; + int ossmaxfrags; + unsigned subdivision; + } dma_dac, dma_adc; + + /* midi stuff */ + struct { + unsigned ird, iwr, icnt; + unsigned ord, owr, ocnt; + wait_queue_head_t iwait; + wait_queue_head_t owait; + struct timer_list timer; + unsigned char ibuf[MIDIINBUF]; + unsigned char obuf[MIDIOUTBUF]; + } midi; +}; + +/* --------------------------------------------------------------------- */ + +static struct cm_state *devs = NULL; +static unsigned long wavetable_mem = 0; + +/* --------------------------------------------------------------------- */ + +extern __inline__ unsigned ld2(unsigned int x) +{ + unsigned r = 0; + + if (x >= 0x10000) { + x >>= 16; + r += 16; + } + if (x >= 0x100) { + x >>= 8; + r += 8; + } + if (x >= 0x10) { + x >>= 4; + r += 4; + } + if (x >= 4) { + x >>= 2; + r += 2; + } + if (x >= 2) + r++; + return r; +} + +/* + * hweightN: returns the hamming weight (i.e. the number + * of bits set) of a N-bit word + */ + +#ifdef hweight32 +#undef hweight32 +#endif + +extern __inline__ unsigned int hweight32(unsigned int w) +{ + unsigned int res = (w & 0x55555555) + ((w >> 1) & 0x55555555); + res = (res & 0x33333333) + ((res >> 2) & 0x33333333); + res = (res & 0x0F0F0F0F) + ((res >> 4) & 0x0F0F0F0F); + res = (res & 0x00FF00FF) + ((res >> 8) & 0x00FF00FF); + return (res & 0x0000FFFF) + ((res >> 16) & 0x0000FFFF); +} + +/* --------------------------------------------------------------------- */ + +static void set_dmadac(struct cm_state *s, unsigned int addr, unsigned int count) +{ + count--; + outl(addr, s->iobase + CODEC_CMI_CH0_FRAME1); + outw(count, s->iobase + CODEC_CMI_CH0_FRAME2); + outb(inb(s->iobase + CODEC_CMI_FUNCTRL0) & ~1, s->iobase + CODEC_CMI_FUNCTRL0); + outb(inb(s->iobase + CODEC_CMI_FUNCTRL0 + 2) | 1, s->iobase + CODEC_CMI_FUNCTRL0 + 2); +} + +static void set_dmaadc(struct cm_state *s, unsigned int addr, unsigned int count) +{ + count--; + outl(addr, s->iobase + CODEC_CMI_CH1_FRAME1); + outw(count, s->iobase + CODEC_CMI_CH1_FRAME2); + outb(inb(s->iobase + CODEC_CMI_FUNCTRL0) | 2, s->iobase + CODEC_CMI_FUNCTRL0); + outb(inb(s->iobase + CODEC_CMI_FUNCTRL0 + 2) | 2, s->iobase + CODEC_CMI_FUNCTRL0 + 2); +} + +extern __inline__ unsigned get_dmadac(struct cm_state *s) +{ + unsigned int curr_addr; + + curr_addr = inl(s->iobase + CODEC_CMI_CH0_FRAME1); + curr_addr -= virt_to_bus(s->dma_dac.rawbuf); + curr_addr = s->dma_dac.dmasize - curr_addr; + curr_addr &= ~(sample_size[(s->fmt >> CM_CFMT_DACSHIFT) & CM_CFMT_MASK]-1); + return curr_addr; +} + +extern __inline__ unsigned get_dmaadc(struct cm_state *s) +{ + unsigned int curr_addr; + + curr_addr = inl(s->iobase + CODEC_CMI_CH1_FRAME1); + curr_addr -= virt_to_bus(s->dma_adc.rawbuf); + curr_addr = s->dma_adc.dmasize - curr_addr; + curr_addr &= ~(sample_size[(s->fmt >> CM_CFMT_ADCSHIFT) & CM_CFMT_MASK]-1); + return curr_addr; +} + +static void wrmixer(struct cm_state *s, unsigned char idx, unsigned char data) +{ + outb(idx, s->iobase + CODEC_SB16_ADDR); + udelay(10); + outb(data, s->iobase + CODEC_SB16_DATA); + udelay(10); +} + +static unsigned char rdmixer(struct cm_state *s, unsigned char idx) +{ + unsigned char v; + + outb(idx, s->iobase + CODEC_SB16_ADDR); + udelay(10); + v = inb(s->iobase + CODEC_SB16_DATA); + udelay(10); + return v; +} + +static void set_fmt(struct cm_state *s, unsigned char mask, unsigned char data) +{ + unsigned long flags; + + spin_lock_irqsave(&s->lock, flags); + if (mask) { + s->fmt = inb(s->iobase + CODEC_CMI_CHFORMAT); + udelay(10); + } + s->fmt = (s->fmt & mask) | data; + outb(s->fmt, s->iobase + CODEC_CMI_CHFORMAT); + spin_unlock_irqrestore(&s->lock, flags); + udelay(10); +} + +static void frobindir(struct cm_state *s, unsigned char idx, unsigned char mask, unsigned char data) +{ + outb(idx, s->iobase + CODEC_SB16_ADDR); + udelay(10); + outb((inb(s->iobase + CODEC_SB16_DATA) & mask) | data, s->iobase + CODEC_SB16_DATA); + udelay(10); +} + +static struct { + unsigned rate; + unsigned lower; + unsigned upper; + unsigned char freq; +} rate_lookup[] = +{ + { 5512, (0 + 5512) / 2, (5512 + 8000) / 2, 0 }, + { 8000, (5512 + 8000) / 2, (8000 + 11025) / 2, 4 }, + { 11025, (8000 + 11025) / 2, (11025 + 16000) / 2, 1 }, + { 16000, (11025 + 16000) / 2, (16000 + 22050) / 2, 5 }, + { 22050, (16000 + 22050) / 2, (22050 + 32000) / 2, 2 }, + { 32000, (22050 + 32000) / 2, (32000 + 44100) / 2, 6 }, + { 44100, (32000 + 44100) / 2, (44100 + 48000) / 2, 3 }, + { 48000, 48000, 48000, 7 } +}; + +static void set_dac_rate(struct cm_state *s, unsigned rate) +{ + unsigned long flags; + unsigned char freq = 4, val; + int i; + + if (rate > 48000) + rate = 48000; + if (rate < 5512) + rate = 5512; + for (i = 0; i < sizeof(rate_lookup) / sizeof(rate_lookup[0]); i++) + { + if (rate > rate_lookup[i].lower && rate <= rate_lookup[i].upper) + { + rate = rate_lookup[i].rate; + freq = rate_lookup[i].freq; + break; + } + } + s->ratedac = rate; + freq <<= 2; + spin_lock_irqsave(&s->lock, flags); + val = inb(s->iobase + CODEC_CMI_FUNCTRL1 + 1) & ~0x1c; + outb(val | freq, s->iobase + CODEC_CMI_FUNCTRL1 + 1); + spin_unlock_irqrestore(&s->lock, flags); +} + +static void set_adc_rate(struct cm_state *s, unsigned rate) +{ + unsigned long flags; + unsigned char freq = 4, val; + int i; + + if (rate > 48000) + rate = 48000; + if (rate < 5512) + rate = 5512; + for (i = 0; i < sizeof(rate_lookup) / sizeof(rate_lookup[0]); i++) + { + if (rate > rate_lookup[i].lower && rate <= rate_lookup[i].upper) + { + rate = rate_lookup[i].rate; + freq = rate_lookup[i].freq; + break; + } + } + s->rateadc = rate; + freq <<= 5; + spin_lock_irqsave(&s->lock, flags); + val = inb(s->iobase + CODEC_CMI_FUNCTRL1 + 1) & ~0xe0; + outb(val | freq, s->iobase + CODEC_CMI_FUNCTRL1 + 1); + spin_unlock_irqrestore(&s->lock, flags); +} + +/* --------------------------------------------------------------------- */ + +extern inline void stop_adc(struct cm_state *s) +{ + unsigned long flags; + + spin_lock_irqsave(&s->lock, flags); + s->enable &= ~CM_CENABLE_RE; + /* disable interrupt */ + outb(inb(s->iobase + CODEC_CMI_INT_HLDCLR + 2) & ~2, s->iobase + CODEC_CMI_INT_HLDCLR + 2); + /* disable channel and reset */ + outb(s->enable | CM_CH1_RESET, s->iobase + CODEC_CMI_FUNCTRL0 + 2); + udelay(10); + outb(s->enable & ~CM_CH1_RESET, s->iobase + CODEC_CMI_FUNCTRL0 + 2); + spin_unlock_irqrestore(&s->lock, flags); +} + +extern inline void stop_dac(struct cm_state *s) +{ + unsigned long flags; + + spin_lock_irqsave(&s->lock, flags); + s->enable &= ~CM_CENABLE_PE; + /* disable interrupt */ + outb(inb(s->iobase + CODEC_CMI_INT_HLDCLR + 2) & ~1, s->iobase + CODEC_CMI_INT_HLDCLR + 2); + /* disable channel and reset */ + outb(s->enable | CM_CH0_RESET, s->iobase + CODEC_CMI_FUNCTRL0 + 2); + udelay(10); + outb(s->enable & ~CM_CH0_RESET, s->iobase + CODEC_CMI_FUNCTRL0 + 2); + spin_unlock_irqrestore(&s->lock, flags); +} + +static void start_dac(struct cm_state *s) +{ + unsigned long flags; + + spin_lock_irqsave(&s->lock, flags); + if ((s->dma_dac.mapped || s->dma_dac.count > 0) && s->dma_dac.ready) { + s->enable |= CM_CENABLE_PE; + outb(s->enable, s->iobase + CODEC_CMI_FUNCTRL0 + 2); + } + outb(inb(s->iobase + CODEC_CMI_INT_HLDCLR + 2) | 1, s->iobase + CODEC_CMI_INT_HLDCLR + 2); + spin_unlock_irqrestore(&s->lock, flags); +} + +static void start_adc(struct cm_state *s) +{ + unsigned long flags; + + spin_lock_irqsave(&s->lock, flags); + if ((s->dma_adc.mapped || s->dma_adc.count < (signed)(s->dma_adc.dmasize - 2*s->dma_adc.fragsize)) + && s->dma_adc.ready) { + s->enable |= CM_CENABLE_RE; + outb(s->enable, s->iobase + CODEC_CMI_FUNCTRL0 + 2); + } + outb(inb(s->iobase + CODEC_CMI_INT_HLDCLR + 2) | 2, s->iobase + CODEC_CMI_INT_HLDCLR + 2); + spin_unlock_irqrestore(&s->lock, flags); +} + +/* --------------------------------------------------------------------- */ + +#define DMABUF_DEFAULTORDER (17-PAGE_SHIFT) +#define DMABUF_MINORDER 1 + +static void dealloc_dmabuf(struct dmabuf *db) +{ + unsigned long map, mapend; + + if (db->rawbuf) { + /* undo marking the pages as reserved */ + mapend = MAP_NR(db->rawbuf + (PAGE_SIZE << db->buforder) - 1); + for (map = MAP_NR(db->rawbuf); map <= mapend; map++) + clear_bit(PG_reserved, &mem_map[map].flags); + free_pages((unsigned long)db->rawbuf, db->buforder); + } + db->rawbuf = NULL; + db->mapped = db->ready = 0; +} + + +/* Ch0 is used for playback, Ch1 is used for recording */ + +static int prog_dmabuf(struct cm_state *s, unsigned rec) +{ + struct dmabuf *db = rec ? &s->dma_adc : &s->dma_dac; + unsigned rate = rec ? s->rateadc : s->ratedac; + int order; + unsigned bytepersec; + unsigned bufs; + unsigned long map, mapend; + unsigned char fmt; + unsigned long flags; + + spin_lock_irqsave(&s->lock, flags); + fmt = s->fmt; + if (rec) { + s->enable &= ~CM_CENABLE_RE; + fmt >>= CM_CFMT_ADCSHIFT; + } else { + s->enable &= ~CM_CENABLE_PE; + fmt >>= CM_CFMT_DACSHIFT; + } + outb(s->enable, s->iobase + CODEC_CMI_FUNCTRL0 + 2); + spin_unlock_irqrestore(&s->lock, flags); + fmt &= CM_CFMT_MASK; + db->hwptr = db->swptr = db->total_bytes = db->count = db->error = db->endcleared = 0; + if (!db->rawbuf) { + db->ready = db->mapped = 0; + for (order = DMABUF_DEFAULTORDER; order >= DMABUF_MINORDER && !db->rawbuf; order--) + db->rawbuf = (void *)__get_free_pages(GFP_KERNEL | GFP_DMA, order); + if (!db->rawbuf) + return -ENOMEM; + db->buforder = order; + if ((virt_to_bus(db->rawbuf) ^ (virt_to_bus(db->rawbuf) + (PAGE_SIZE << db->buforder) - 1)) & ~0xffff) + printk(KERN_DEBUG "cm: DMA buffer crosses 64k boundary: busaddr 0x%lx size %ld\n", + virt_to_bus(db->rawbuf), PAGE_SIZE << db->buforder); + if ((virt_to_bus(db->rawbuf) + (PAGE_SIZE << db->buforder) - 1) & ~0xffffff) + printk(KERN_DEBUG "cm: DMA buffer beyond 16MB: busaddr 0x%lx size %ld\n", + virt_to_bus(db->rawbuf), PAGE_SIZE << db->buforder); + /* now mark the pages as reserved; otherwise remap_page_range doesn't do what we want */ + mapend = MAP_NR(db->rawbuf + (PAGE_SIZE << db->buforder) - 1); + for (map = MAP_NR(db->rawbuf); map <= mapend; map++) + set_bit(PG_reserved, &mem_map[map].flags); + } + bytepersec = rate << sample_shift[fmt]; + bufs = PAGE_SIZE << db->buforder; + if (db->ossfragshift) { + if ((1000 << db->ossfragshift) < bytepersec) + db->fragshift = ld2(bytepersec/1000); + else + db->fragshift = db->ossfragshift; + } else { + db->fragshift = ld2(bytepersec/100/(db->subdivision ? db->subdivision : 1)); + if (db->fragshift < 3) + db->fragshift = 3; + } + db->numfrag = bufs >> db->fragshift; + while (db->numfrag < 4 && db->fragshift > 3) { + db->fragshift--; + db->numfrag = bufs >> db->fragshift; + } + db->fragsize = 1 << db->fragshift; + if (db->ossmaxfrags >= 4 && db->ossmaxfrags < db->numfrag) + db->numfrag = db->ossmaxfrags; +#if 1 + /* to make fragsize >= 4096 */ + while (db->fragsize < 4096 && db->numfrag >= 4) + { + db->fragsize *= 2; + db->fragshift++; + db->numfrag /= 2; + } +#endif + db->fragsamples = db->fragsize >> sample_shift[fmt]; + db->dmasize = db->numfrag << db->fragshift; + memset(db->rawbuf, (fmt & CM_CFMT_16BIT) ? 0 : 0x80, db->dmasize); + spin_lock_irqsave(&s->lock, flags); + if (rec) { + set_dmaadc(s, virt_to_bus(db->rawbuf), db->dmasize >> sample_shift[fmt]); + /* program sample counts */ + outw(db->fragsamples-1, s->iobase + CODEC_CMI_CH1_FRAME2 + 2); + } else { + set_dmadac(s, virt_to_bus(db->rawbuf), db->dmasize >> sample_shift[fmt]); + /* program sample counts */ + outw(db->fragsamples-1, s->iobase + CODEC_CMI_CH0_FRAME2 + 2); + } + spin_unlock_irqrestore(&s->lock, flags); + db->ready = 1; + return 0; +} + +extern __inline__ void clear_advance(struct cm_state *s) +{ + unsigned char c = (s->fmt & (CM_CFMT_16BIT << CM_CFMT_DACSHIFT)) ? 0 : 0x80; + unsigned char *buf = s->dma_dac.rawbuf; + unsigned bsize = s->dma_dac.dmasize; + unsigned bptr = s->dma_dac.swptr; + unsigned len = s->dma_dac.fragsize; + + if (bptr + len > bsize) { + unsigned x = bsize - bptr; + memset(buf + bptr, c, x); + bptr = 0; + len -= x; + } + memset(buf + bptr, c, len); +} + +/* call with spinlock held! */ +static void cm_update_ptr(struct cm_state *s) +{ + unsigned hwptr; + int diff; + + /* update ADC pointer */ + if (s->dma_adc.ready) { + hwptr = (s->dma_adc.dmasize - get_dmaadc(s)) % s->dma_adc.dmasize; + diff = (s->dma_adc.dmasize + hwptr - s->dma_adc.hwptr) % s->dma_adc.dmasize; + s->dma_adc.hwptr = hwptr; + s->dma_adc.total_bytes += diff; + s->dma_adc.count += diff; + if (s->dma_adc.count >= (signed)s->dma_adc.fragsize) + wake_up(&s->dma_adc.wait); + if (!s->dma_adc.mapped) { + if (s->dma_adc.count > (signed)(s->dma_adc.dmasize - ((3 * s->dma_adc.fragsize) >> 1))) { + s->enable &= ~CM_CENABLE_RE; + outb(s->enable, s->iobase + CODEC_CMI_FUNCTRL0 + 2); + s->dma_adc.error++; + } + } + } + /* update DAC pointer */ + if (s->dma_dac.ready) { + hwptr = (s->dma_dac.dmasize - get_dmadac(s)) % s->dma_dac.dmasize; + diff = (s->dma_dac.dmasize + hwptr - s->dma_dac.hwptr) % s->dma_dac.dmasize; + s->dma_dac.hwptr = hwptr; + s->dma_dac.total_bytes += diff; + if (s->dma_dac.mapped) { + s->dma_dac.count += diff; + if (s->dma_dac.count >= (signed)s->dma_dac.fragsize) + wake_up(&s->dma_dac.wait); + } else { + s->dma_dac.count -= diff; + if (s->dma_dac.count <= 0) { + s->enable &= ~CM_CENABLE_PE; + outb(s->enable, s->iobase + CODEC_CMI_FUNCTRL0 + 2); + s->dma_dac.error++; + } else if (s->dma_dac.count <= (signed)s->dma_dac.fragsize && !s->dma_dac.endcleared) { + clear_advance(s); + s->dma_dac.endcleared = 1; + } + if (s->dma_dac.count + (signed)s->dma_dac.fragsize <= (signed)s->dma_dac.dmasize) + wake_up(&s->dma_dac.wait); + } + } +} + +/* hold spinlock for the following! */ +static void cm_handle_midi(struct cm_state *s) +{ + unsigned char ch; + int wake; + + wake = 0; + while (!(inb(s->iomidi+1) & 0x80)) { + ch = inb(s->iomidi); + if (s->midi.icnt < MIDIINBUF) { + s->midi.ibuf[s->midi.iwr] = ch; + s->midi.iwr = (s->midi.iwr + 1) % MIDIINBUF; + s->midi.icnt++; + } + wake = 1; + } + if (wake) + wake_up(&s->midi.iwait); + wake = 0; + while (!(inb(s->iomidi+1) & 0x40) && s->midi.ocnt > 0) { + outb(s->midi.obuf[s->midi.ord], s->iomidi); + s->midi.ord = (s->midi.ord + 1) % MIDIOUTBUF; + s->midi.ocnt--; + if (s->midi.ocnt < MIDIOUTBUF-16) + wake = 1; + } + if (wake) + wake_up(&s->midi.owait); +} + +static void cm_interrupt(int irq, void *dev_id, struct pt_regs *regs) +{ + struct cm_state *s = (struct cm_state *)dev_id; + unsigned int intsrc, intstat; + + /* fastpath out, to ease interrupt sharing */ + intsrc = inb(s->iobase + CODEC_CMI_INT_STATUS); + if (!(intsrc & (CM_INT_CH0 | CM_INT_CH1))) + return; + spin_lock(&s->lock); + intstat = inb(s->iobase + CODEC_CMI_INT_HLDCLR + 2); + /* disable interrupt */ + if (intsrc & CM_INT_CH0) + outb(intstat & ~1, s->iobase + CODEC_CMI_INT_HLDCLR + 2); + if (intsrc & CM_INT_CH1) + outb(intstat & ~2, s->iobase + CODEC_CMI_INT_HLDCLR + 2); + cm_update_ptr(s); +#ifdef SOUND_CONFIG_CMPCI_MIDI + cm_handle_midi(s); +#endif + /* enable interrupt */ + if (intsrc & CM_INT_CH0) + outb(intstat | 1, s->iobase + CODEC_CMI_INT_HLDCLR + 2); + if (intsrc & CM_INT_CH1) + outb(intstat | 2, s->iobase + CODEC_CMI_INT_HLDCLR + 2); + spin_unlock(&s->lock); +} + +static void cm_midi_timer(unsigned long data) +{ + struct cm_state *s = (struct cm_state *)data; + unsigned long flags; + + spin_lock_irqsave(&s->lock, flags); + cm_handle_midi(s); + spin_unlock_irqrestore(&s->lock, flags); + s->midi.timer.expires = jiffies+1; + add_timer(&s->midi.timer); +} + +/* --------------------------------------------------------------------- */ + +static const char invalid_magic[] = KERN_CRIT "cm: invalid magic value\n"; + +#ifdef CONFIG_SOUND_CMPCI /* support multiple chips */ +#define VALIDATE_STATE(s) +#else +#define VALIDATE_STATE(s) \ +({ \ + if (!(s) || (s)->magic != CM_MAGIC) { \ + printk(invalid_magic); \ + return -ENXIO; \ + } \ +}) +#endif + +/* --------------------------------------------------------------------- */ + +#define MT_4 1 +#define MT_5MUTE 2 +#define MT_4MUTEMONO 3 +#define MT_6MUTE 4 + +static const struct { + unsigned left; + unsigned right; + unsigned type; + unsigned rec; + unsigned play; +} mixtable[SOUND_MIXER_NRDEVICES] = { + [SOUND_MIXER_CD] = { DSP_MIX_CDVOLIDX_L, DSP_MIX_CDVOLIDX_R, MT_5MUTE, 0x04, 0x02 }, + [SOUND_MIXER_LINE] = { DSP_MIX_LINEVOLIDX_L, DSP_MIX_LINEVOLIDX_R, MT_5MUTE, 0x10, 0x08 }, + [SOUND_MIXER_MIC] = { DSP_MIX_MICVOLIDX, CODEC_CMI_MIXER2, MT_4MUTEMONO, 0x01, 0x01 }, + [SOUND_MIXER_SYNTH] = { DSP_MIX_FMVOLIDX_L, DSP_MIX_FMVOLIDX_R, MT_5MUTE, 0x40, 0x00 }, + [SOUND_MIXER_VOLUME] = { DSP_MIX_MASTERVOLIDX_L, DSP_MIX_MASTERVOLIDX_R, MT_5MUTE, 0x00, 0x00 }, + [SOUND_MIXER_PCM] = { DSP_MIX_VOICEVOLIDX_L, DSP_MIX_VOICEVOLIDX_R, MT_5MUTE, 0x00, 0x00 } +}; + +#ifdef OSS_DOCUMENTED_MIXER_SEMANTICS + +static int return_mixval(struct cm_state *s, unsigned i, int *arg) +{ + unsigned long flags; + unsigned char l, r, rl, rr; + + spin_lock_irqsave(&s->lock, flags); + l = rdmixer(s, mixtable[i].left); + r = rdmixer(s, mixtable[i].right); + spin_unlock_irqrestore(&s->lock, flags); + switch (mixtable[i].type) { + case MT_4: + r &= 0xf; + l &= 0xf; + rl = 10 + 6 * (l & 15); + rr = 10 + 6 * (r & 15); + break; + + case MT_4MUTEMONO: + rl = 55 - 3 * (l & 15); + if (r & 0x10) + rl += 45; + rr = rl; + r = l; + break; + + case MT_5MUTE: + default: + rl = 100 - 3 * (l & 31); + rr = 100 - 3 * (r & 31); + break; + + case MT_6MUTE: + rl = 100 - 3 * (l & 63) / 2; + rr = 100 - 3 * (r & 63) / 2; + break; + } + if (l & 0x80) + rl = 0; + if (r & 0x80) + rr = 0; + return put_user((rr << 8) | rl, arg); +} + +#else /* OSS_DOCUMENTED_MIXER_SEMANTICS */ + +static const unsigned char volidx[SOUND_MIXER_NRDEVICES] = +{ + [SOUND_MIXER_CD] = 1, + [SOUND_MIXER_LINE] = 2, + [SOUND_MIXER_MIC] = 3, + [SOUND_MIXER_SYNTH] = 4, + [SOUND_MIXER_VOLUME] = 5, + [SOUND_MIXER_PCM] = 6 +}; + +#endif /* OSS_DOCUMENTED_MIXER_SEMANTICS */ + +static unsigned mixer_recmask(struct cm_state *s) +{ + unsigned long flags; + int i, j, k; + + spin_lock_irqsave(&s->lock, flags); + j = rdmixer(s, DSP_MIX_ADCMIXIDX_L); + spin_unlock_irqrestore(&s->lock, flags); + j &= 0x7f; + for (k = i = 0; i < SOUND_MIXER_NRDEVICES; i++) + if (j & mixtable[i].rec) + k |= 1 << i; + return k; +} + +static int mixer_ioctl(struct cm_state *s, unsigned int cmd, unsigned long arg) +{ + unsigned long flags; + int i, val, j; + unsigned char l, r, rl, rr; + + VALIDATE_STATE(s); + if (cmd == SOUND_MIXER_INFO) { + mixer_info info; + strncpy(info.id, "cmpci", sizeof(info.id)); + strncpy(info.name, "C-Media PCI", sizeof(info.name)); + info.modify_counter = s->mix.modcnt; + if (copy_to_user((void *)arg, &info, sizeof(info))) + return -EFAULT; + return 0; + } + if (cmd == SOUND_OLD_MIXER_INFO) { + _old_mixer_info info; + strncpy(info.id, "cmpci", sizeof(info.id)); + strncpy(info.name, "C-Media cmpci", sizeof(info.name)); + if (copy_to_user((void *)arg, &info, sizeof(info))) + return -EFAULT; + return 0; + } + if (cmd == OSS_GETVERSION) + return put_user(SOUND_VERSION, (int *)arg); + if (_IOC_TYPE(cmd) != 'M' || _IOC_SIZE(cmd) != sizeof(int)) + return -EINVAL; + if (_IOC_DIR(cmd) == _IOC_READ) { + switch (_IOC_NR(cmd)) { + case SOUND_MIXER_RECSRC: /* Arg contains a bit for each recording source */ + return put_user(mixer_recmask(s), (int *)arg); + + case SOUND_MIXER_OUTSRC: /* Arg contains a bit for each recording source */ + return put_user(mixer_recmask(s), (int *)arg);//need fix + + case SOUND_MIXER_DEVMASK: /* Arg contains a bit for each supported device */ + for (val = i = 0; i < SOUND_MIXER_NRDEVICES; i++) + if (mixtable[i].type) + val |= 1 << i; + return put_user(val, (int *)arg); + + case SOUND_MIXER_RECMASK: /* Arg contains a bit for each supported recording source */ + for (val = i = 0; i < SOUND_MIXER_NRDEVICES; i++) + if (mixtable[i].rec) + val |= 1 << i; + return put_user(val, (int *)arg); + + case SOUND_MIXER_OUTMASK: /* Arg contains a bit for each supported recording source */ + for (val = i = 0; i < SOUND_MIXER_NRDEVICES; i++) + if (mixtable[i].play) + val |= 1 << i; + return put_user(val, (int *)arg); + + case SOUND_MIXER_STEREODEVS: /* Mixer channels supporting stereo */ + for (val = i = 0; i < SOUND_MIXER_NRDEVICES; i++) + if (mixtable[i].type && mixtable[i].type != MT_4MUTEMONO) + val |= 1 << i; + return put_user(val, (int *)arg); + + case SOUND_MIXER_CAPS: + return put_user(0, (int *)arg); + + default: + i = _IOC_NR(cmd); + if (i >= SOUND_MIXER_NRDEVICES || !mixtable[i].type) + return -EINVAL; +#ifdef OSS_DOCUMENTED_MIXER_SEMANTICS + return return_mixval(s, i, (int *)arg); +#else /* OSS_DOCUMENTED_MIXER_SEMANTICS */ + if (!volidx[i]) + return -EINVAL; + return put_user(s->mix.vol[volidx[i]-1], (int *)arg); +#endif /* OSS_DOCUMENTED_MIXER_SEMANTICS */ + } + } + if (_IOC_DIR(cmd) != (_IOC_READ|_IOC_WRITE)) + return -EINVAL; + s->mix.modcnt++; + switch (_IOC_NR(cmd)) { + case SOUND_MIXER_RECSRC: /* Arg contains a bit for each recording source */ + get_user_ret(val, (int *)arg, -EFAULT); + i = hweight32(val); + for (j = i = 0; i < SOUND_MIXER_NRDEVICES; i++) { + if (!(val & (1 << i))) + continue; + if (!mixtable[i].rec) { + val &= ~(1 << i); + continue; + } + j |= mixtable[i].rec; + } + spin_lock_irqsave(&s->lock, flags); + wrmixer(s, DSP_MIX_ADCMIXIDX_L, j); + wrmixer(s, DSP_MIX_ADCMIXIDX_R, (j & 1) | j>>1); + spin_unlock_irqrestore(&s->lock, flags); + return 0; + + case SOUND_MIXER_OUTSRC: /* Arg contains a bit for each recording source */ + get_user_ret(val, (int *)arg, -EFAULT); + for (j = i = 0; i < SOUND_MIXER_NRDEVICES; i++) { + if (!(val & (1 << i))) + continue; + if (!mixtable[i].play) { + val &= ~(1 << i); + continue; + } + j |= mixtable[i].play; + } + spin_lock_irqsave(&s->lock, flags); + frobindir(s, DSP_MIX_OUTMIXIDX, 0x1f, j); + spin_unlock_irqrestore(&s->lock, flags); + return 0; + + default: + i = _IOC_NR(cmd); + if (i >= SOUND_MIXER_NRDEVICES || !mixtable[i].type) + return -EINVAL; + get_user_ret(val, (int *)arg, -EFAULT); + l = val & 0xff; + r = (val >> 8) & 0xff; + if (l > 100) + l = 100; + if (r > 100) + r = 100; + spin_lock_irqsave(&s->lock, flags); + switch (mixtable[i].type) { + case MT_4: + if (l >= 10) + l -= 10; + if (r >= 10) + r -= 10; + frobindir(s, mixtable[i].left, 0xf0, l / 6); + frobindir(s, mixtable[i].right, 0xf0, l / 6); + break; + + case MT_4MUTEMONO: + rl = (l < 4 ? 0 : (l - 5) / 3) & 31; + rr = (rl >> 2) & 7; + wrmixer(s, mixtable[i].left, rl<<3); + outb((inb(s->iobase + CODEC_CMI_MIXER2) & ~0x0e) | rr<<1, s->iobase + CODEC_CMI_MIXER2); + break; + + case MT_5MUTE: + rl = l < 4 ? 0 : (l - 5) / 3; + rr = r < 4 ? 0 : (r - 5) / 3; + wrmixer(s, mixtable[i].left, rl<<3); + wrmixer(s, mixtable[i].right, rr<<3); + break; + + case MT_6MUTE: + if (l < 6) + rl = 0x00; + else + rl = l * 2 / 3; + if (r < 6) + rr = 0x00; + else + rr = r * 2 / 3; + wrmixer(s, mixtable[i].left, rl); + wrmixer(s, mixtable[i].right, rr); + break; + } + spin_unlock_irqrestore(&s->lock, flags); +#ifdef OSS_DOCUMENTED_MIXER_SEMANTICS + return return_mixval(s, i, (int *)arg); +#else /* OSS_DOCUMENTED_MIXER_SEMANTICS */ + if (!volidx[i]) + return -EINVAL; + s->mix.vol[volidx[i]-1] = val; + return put_user(s->mix.vol[volidx[i]-1], (int *)arg); +#endif /* OSS_DOCUMENTED_MIXER_SEMANTICS */ + } +} + +/* --------------------------------------------------------------------- */ + +static loff_t cm_llseek(struct file *file, loff_t offset, int origin) +{ + return -ESPIPE; +} + +/* --------------------------------------------------------------------- */ + +static int cm_open_mixdev(struct inode *inode, struct file *file) +{ + int minor = MINOR(inode->i_rdev); + struct cm_state *s = devs; + + while (s && s->dev_mixer != minor) + s = s->next; + if (!s) + return -ENODEV; + VALIDATE_STATE(s); + file->private_data = s; + MOD_INC_USE_COUNT; + return 0; +} + +static int cm_release_mixdev(struct inode *inode, struct file *file) +{ + struct cm_state *s = (struct cm_state *)file->private_data; + + VALIDATE_STATE(s); + MOD_DEC_USE_COUNT; + return 0; +} + +static int cm_ioctl_mixdev(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) +{ + return mixer_ioctl((struct cm_state *)file->private_data, cmd, arg); +} + +static /*const*/ struct file_operations cm_mixer_fops = { + &cm_llseek, + NULL, /* read */ + NULL, /* write */ + NULL, /* readdir */ + NULL, /* poll */ + &cm_ioctl_mixdev, + NULL, /* mmap */ + &cm_open_mixdev, + NULL, /* flush */ + &cm_release_mixdev, + NULL, /* fsync */ + NULL, /* fasync */ + NULL, /* check_media_change */ + NULL, /* revalidate */ + NULL, /* lock */ +}; + +/* --------------------------------------------------------------------- */ + +static int drain_dac(struct cm_state *s, int nonblock) +{ + DECLARE_WAITQUEUE(wait, current); + unsigned long flags; + int count, tmo; + + if (s->dma_dac.mapped || !s->dma_dac.ready) + return 0; + current->state = TASK_INTERRUPTIBLE; + add_wait_queue(&s->dma_dac.wait, &wait); + for (;;) { + spin_lock_irqsave(&s->lock, flags); + count = s->dma_dac.count; + spin_unlock_irqrestore(&s->lock, flags); + if (count <= 0) + break; + if (signal_pending(current)) + break; + if (nonblock) { + remove_wait_queue(&s->dma_dac.wait, &wait); + current->state = TASK_RUNNING; + return -EBUSY; + } + tmo = (count * HZ) / s->ratedac; + tmo >>= sample_shift[(s->fmt >> CM_CFMT_DACSHIFT) & CM_CFMT_MASK]; + if (!schedule_timeout(tmo ? : 1) && tmo) + printk(KERN_DEBUG "cm: dma timed out??\n"); + } + remove_wait_queue(&s->dma_dac.wait, &wait); + current->state = TASK_RUNNING; + if (signal_pending(current)) + return -ERESTARTSYS; + return 0; +} + +/* --------------------------------------------------------------------- */ + +static ssize_t cm_read(struct file *file, char *buffer, size_t count, loff_t *ppos) +{ + struct cm_state *s = (struct cm_state *)file->private_data; + ssize_t ret; + unsigned long flags; + unsigned swptr; + int cnt; + + VALIDATE_STATE(s); + if (ppos != &file->f_pos) + return -ESPIPE; + if (s->dma_adc.mapped) + return -ENXIO; + if (!s->dma_adc.ready && (ret = prog_dmabuf(s, 1))) + return ret; + if (!access_ok(VERIFY_WRITE, buffer, count)) + return -EFAULT; + ret = 0; +#if 0 + spin_lock_irqsave(&s->lock, flags); + cm_update_ptr(s); + spin_unlock_irqrestore(&s->lock, flags); +#endif + while (count > 0) { + spin_lock_irqsave(&s->lock, flags); + swptr = s->dma_adc.swptr; + cnt = s->dma_adc.dmasize-swptr; + if (s->dma_adc.count < cnt) + cnt = s->dma_adc.count; + spin_unlock_irqrestore(&s->lock, flags); + if (cnt > count) + cnt = count; + if (cnt <= 0) { + start_adc(s); + if (file->f_flags & O_NONBLOCK) + return ret ? ret : -EAGAIN; + interruptible_sleep_on(&s->dma_adc.wait); + if (signal_pending(current)) + return ret ? ret : -ERESTARTSYS; + continue; + } + if (copy_to_user(buffer, s->dma_adc.rawbuf + swptr, cnt)) + return ret ? ret : -EFAULT; + swptr = (swptr + cnt) % s->dma_adc.dmasize; + spin_lock_irqsave(&s->lock, flags); + s->dma_adc.swptr = swptr; + s->dma_adc.count -= cnt; + spin_unlock_irqrestore(&s->lock, flags); + count -= cnt; + buffer += cnt; + ret += cnt; + start_adc(s); + } + return ret; +} + +static ssize_t cm_write(struct file *file, const char *buffer, size_t count, loff_t *ppos) +{ + struct cm_state *s = (struct cm_state *)file->private_data; + ssize_t ret; + unsigned long flags; + unsigned swptr; + int cnt; + + VALIDATE_STATE(s); + if (ppos != &file->f_pos) + return -ESPIPE; + if (s->dma_dac.mapped) + return -ENXIO; + if (!s->dma_dac.ready && (ret = prog_dmabuf(s, 0))) + return ret; + if (!access_ok(VERIFY_READ, buffer, count)) + return -EFAULT; + ret = 0; +#if 0 + spin_lock_irqsave(&s->lock, flags); + cm_update_ptr(s); + spin_unlock_irqrestore(&s->lock, flags); +#endif + while (count > 0) { + spin_lock_irqsave(&s->lock, flags); + if (s->dma_dac.count < 0) { + s->dma_dac.count = 0; + s->dma_dac.swptr = s->dma_dac.hwptr; + } + swptr = s->dma_dac.swptr; + cnt = s->dma_dac.dmasize-swptr; + if (s->dma_dac.count + cnt > s->dma_dac.dmasize) + cnt = s->dma_dac.dmasize - s->dma_dac.count; + spin_unlock_irqrestore(&s->lock, flags); + if (cnt > count) + cnt = count; + if (cnt <= 0) { + start_dac(s); + if (file->f_flags & O_NONBLOCK) + return ret ? ret : -EAGAIN; + interruptible_sleep_on(&s->dma_dac.wait); + if (signal_pending(current)) + return ret ? ret : -ERESTARTSYS; + continue; + } + if (copy_from_user(s->dma_dac.rawbuf + swptr, buffer, cnt)) + return ret ? ret : -EFAULT; + swptr = (swptr + cnt) % s->dma_dac.dmasize; + spin_lock_irqsave(&s->lock, flags); + s->dma_dac.swptr = swptr; + s->dma_dac.count += cnt; + s->dma_dac.endcleared = 0; + spin_unlock_irqrestore(&s->lock, flags); + count -= cnt; + buffer += cnt; + ret += cnt; + start_dac(s); + } + return ret; +} + +static unsigned int cm_poll(struct file *file, struct poll_table_struct *wait) +{ + struct cm_state *s = (struct cm_state *)file->private_data; + unsigned long flags; + unsigned int mask = 0; + + VALIDATE_STATE(s); + if (file->f_mode & FMODE_WRITE) + poll_wait(file, &s->dma_dac.wait, wait); + if (file->f_mode & FMODE_READ) + poll_wait(file, &s->dma_adc.wait, wait); + spin_lock_irqsave(&s->lock, flags); + cm_update_ptr(s); + if (file->f_mode & FMODE_READ) { + if (s->dma_adc.count >= (signed)s->dma_adc.fragsize) + mask |= POLLIN | POLLRDNORM; + } + if (file->f_mode & FMODE_WRITE) { + if (s->dma_dac.mapped) { + if (s->dma_dac.count >= (signed)s->dma_dac.fragsize) + mask |= POLLOUT | POLLWRNORM; + } else { + if ((signed)s->dma_dac.dmasize >= s->dma_dac.count + (signed)s->dma_dac.fragsize) + mask |= POLLOUT | POLLWRNORM; + } + } + spin_unlock_irqrestore(&s->lock, flags); + return mask; +} + +static int cm_mmap(struct file *file, struct vm_area_struct *vma) +{ + struct cm_state *s = (struct cm_state *)file->private_data; + struct dmabuf *db; + int ret; + unsigned long size; + + VALIDATE_STATE(s); + if (vma->vm_flags & VM_WRITE) { + if ((ret = prog_dmabuf(s, 1)) != 0) + return ret; + db = &s->dma_dac; + } else if (vma->vm_flags & VM_READ) { + if ((ret = prog_dmabuf(s, 0)) != 0) + return ret; + db = &s->dma_adc; + } else + return -EINVAL; + if (vma->vm_offset != 0) + return -EINVAL; + size = vma->vm_end - vma->vm_start; + if (size > (PAGE_SIZE << db->buforder)) + return -EINVAL; + if (remap_page_range(vma->vm_start, virt_to_phys(db->rawbuf), size, vma->vm_page_prot)) + return -EAGAIN; + db->mapped = 1; + return 0; +} + +static int cm_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) +{ + struct cm_state *s = (struct cm_state *)file->private_data; + unsigned long flags; + audio_buf_info abinfo; + count_info cinfo; + int val, mapped, ret; + unsigned char fmtm, fmtd; + + VALIDATE_STATE(s); + mapped = ((file->f_mode & FMODE_WRITE) && s->dma_dac.mapped) || + ((file->f_mode & FMODE_READ) && s->dma_adc.mapped); + switch (cmd) { + case OSS_GETVERSION: + return put_user(SOUND_VERSION, (int *)arg); + + case SNDCTL_DSP_SYNC: + if (file->f_mode & FMODE_WRITE) + return drain_dac(s, 0/*file->f_flags & O_NONBLOCK*/); + return 0; + + case SNDCTL_DSP_SETDUPLEX: + return 0; + + case SNDCTL_DSP_GETCAPS: + return put_user(DSP_CAP_DUPLEX | DSP_CAP_REALTIME | DSP_CAP_TRIGGER | DSP_CAP_MMAP, (int *)arg); + + case SNDCTL_DSP_RESET: + if (file->f_mode & FMODE_WRITE) { + stop_dac(s); + synchronize_irq(); + s->dma_dac.swptr = s->dma_dac.hwptr = s->dma_dac.count = s->dma_dac.total_bytes = 0; + } + if (file->f_mode & FMODE_READ) { + stop_adc(s); + synchronize_irq(); + s->dma_adc.swptr = s->dma_adc.hwptr = s->dma_adc.count = s->dma_adc.total_bytes = 0; + } + return 0; + + case SNDCTL_DSP_SPEED: + get_user_ret(val, (int *)arg, -EFAULT); + if (val >= 0) { + if (file->f_mode & FMODE_READ) { + stop_adc(s); + s->dma_adc.ready = 0; + set_adc_rate(s, val); + } + if (file->f_mode & FMODE_WRITE) { + stop_dac(s); + s->dma_dac.ready = 0; + set_dac_rate(s, val); + } + } + return put_user((file->f_mode & FMODE_READ) ? s->rateadc : s->ratedac, (int *)arg); + + case SNDCTL_DSP_STEREO: + get_user_ret(val, (int *)arg, -EFAULT); + fmtd = 0; + fmtm = ~0; + if (file->f_mode & FMODE_READ) { + stop_adc(s); + s->dma_adc.ready = 0; + if (val) + fmtd |= CM_CFMT_STEREO << CM_CFMT_ADCSHIFT; + else + fmtm &= ~(CM_CFMT_STEREO << CM_CFMT_ADCSHIFT); + } + if (file->f_mode & FMODE_WRITE) { + stop_dac(s); + s->dma_dac.ready = 0; + if (val) + fmtd |= CM_CFMT_STEREO << CM_CFMT_DACSHIFT; + else + fmtm &= ~(CM_CFMT_STEREO << CM_CFMT_DACSHIFT); + } + set_fmt(s, fmtm, fmtd); + return 0; + + case SNDCTL_DSP_CHANNELS: + get_user_ret(val, (int *)arg, -EFAULT); + if (val != 0) { + fmtd = 0; + fmtm = ~0; + if (file->f_mode & FMODE_READ) { + stop_adc(s); + s->dma_adc.ready = 0; + if (val >= 2) + fmtd |= CM_CFMT_STEREO << CM_CFMT_ADCSHIFT; + else + fmtm &= ~(CM_CFMT_STEREO << CM_CFMT_ADCSHIFT); + } + if (file->f_mode & FMODE_WRITE) { + stop_dac(s); + s->dma_dac.ready = 0; + if (val >= 2) + fmtd |= CM_CFMT_STEREO << CM_CFMT_DACSHIFT; + else + fmtm &= ~(CM_CFMT_STEREO << CM_CFMT_DACSHIFT); + } + set_fmt(s, fmtm, fmtd); + } + return put_user((s->fmt & ((file->f_mode & FMODE_READ) ? (CM_CFMT_STEREO << CM_CFMT_ADCSHIFT) + : (CM_CFMT_STEREO << CM_CFMT_DACSHIFT))) ? 2 : 1, (int *)arg); + + case SNDCTL_DSP_GETFMTS: /* Returns a mask */ + return put_user(AFMT_S16_LE|AFMT_U8, (int *)arg); + + case SNDCTL_DSP_SETFMT: /* Selects ONE fmt*/ + get_user_ret(val, (int *)arg, -EFAULT); + if (val != AFMT_QUERY) { + fmtd = 0; + fmtm = ~0; + if (file->f_mode & FMODE_READ) { + stop_adc(s); + s->dma_adc.ready = 0; + if (val == AFMT_S16_LE) + fmtd |= CM_CFMT_16BIT << CM_CFMT_ADCSHIFT; + else + fmtm &= ~(CM_CFMT_16BIT << CM_CFMT_ADCSHIFT); + } + if (file->f_mode & FMODE_WRITE) { + stop_dac(s); + s->dma_dac.ready = 0; + if (val == AFMT_S16_LE) + fmtd |= CM_CFMT_16BIT << CM_CFMT_DACSHIFT; + else + fmtm &= ~(CM_CFMT_16BIT << CM_CFMT_DACSHIFT); + } + set_fmt(s, fmtm, fmtd); + } + return put_user((s->fmt & ((file->f_mode & FMODE_READ) ? (CM_CFMT_16BIT << CM_CFMT_ADCSHIFT) + : (CM_CFMT_16BIT << CM_CFMT_DACSHIFT))) ? AFMT_S16_LE : AFMT_U8, (int *)arg); + + case SNDCTL_DSP_POST: + return 0; + + case SNDCTL_DSP_GETTRIGGER: + val = 0; + if (file->f_mode & FMODE_READ && s->enable & CM_CENABLE_RE) + val |= PCM_ENABLE_INPUT; + if (file->f_mode & FMODE_WRITE && s->enable & CM_CENABLE_PE) + val |= PCM_ENABLE_OUTPUT; + return put_user(val, (int *)arg); + + case SNDCTL_DSP_SETTRIGGER: + get_user_ret(val, (int *)arg, -EFAULT); + if (file->f_mode & FMODE_READ) { + if (val & PCM_ENABLE_INPUT) { + if (!s->dma_adc.ready && (ret = prog_dmabuf(s, 1))) + return ret; + start_adc(s); + } else + stop_adc(s); + } + if (file->f_mode & FMODE_WRITE) { + if (val & PCM_ENABLE_OUTPUT) { + if (!s->dma_dac.ready && (ret = prog_dmabuf(s, 0))) + return ret; + start_dac(s); + } else + stop_dac(s); + } + return 0; + + case SNDCTL_DSP_GETOSPACE: + if (!(file->f_mode & FMODE_WRITE)) + return -EINVAL; + if (!(s->enable & CM_CENABLE_PE) && (val = prog_dmabuf(s, 0)) != 0) + return val; + spin_lock_irqsave(&s->lock, flags); + cm_update_ptr(s); + abinfo.fragsize = s->dma_dac.fragsize; + abinfo.bytes = s->dma_dac.dmasize - s->dma_dac.count; + abinfo.fragstotal = s->dma_dac.numfrag; + abinfo.fragments = abinfo.bytes >> s->dma_dac.fragshift; + spin_unlock_irqrestore(&s->lock, flags); + return copy_to_user((void *)arg, &abinfo, sizeof(abinfo)) ? -EFAULT : 0; + + case SNDCTL_DSP_GETISPACE: + if (!(file->f_mode & FMODE_READ)) + return -EINVAL; + if (!(s->enable & CM_CENABLE_RE) && (val = prog_dmabuf(s, 1)) != 0) + return val; + spin_lock_irqsave(&s->lock, flags); + cm_update_ptr(s); + abinfo.fragsize = s->dma_adc.fragsize; + abinfo.bytes = s->dma_adc.count; + abinfo.fragstotal = s->dma_adc.numfrag; + abinfo.fragments = abinfo.bytes >> s->dma_adc.fragshift; + spin_unlock_irqrestore(&s->lock, flags); + return copy_to_user((void *)arg, &abinfo, sizeof(abinfo)) ? -EFAULT : 0; + + case SNDCTL_DSP_NONBLOCK: + file->f_flags |= O_NONBLOCK; + return 0; + + case SNDCTL_DSP_GETODELAY: + if (!(file->f_mode & FMODE_WRITE)) + return -EINVAL; + spin_lock_irqsave(&s->lock, flags); + cm_update_ptr(s); + val = s->dma_dac.count; + spin_unlock_irqrestore(&s->lock, flags); + return put_user(val, (int *)arg); + + case SNDCTL_DSP_GETIPTR: + if (!(file->f_mode & FMODE_READ)) + return -EINVAL; + spin_lock_irqsave(&s->lock, flags); + cm_update_ptr(s); + cinfo.bytes = s->dma_adc.total_bytes; + cinfo.blocks = s->dma_adc.count >> s->dma_adc.fragshift; + cinfo.ptr = s->dma_adc.hwptr; + if (s->dma_adc.mapped) + s->dma_adc.count &= s->dma_adc.fragsize-1; + spin_unlock_irqrestore(&s->lock, flags); + return copy_to_user((void *)arg, &cinfo, sizeof(cinfo)); + + case SNDCTL_DSP_GETOPTR: + if (!(file->f_mode & FMODE_WRITE)) + return -EINVAL; + spin_lock_irqsave(&s->lock, flags); + cm_update_ptr(s); + cinfo.bytes = s->dma_dac.total_bytes; + cinfo.blocks = s->dma_dac.count >> s->dma_dac.fragshift; + cinfo.ptr = s->dma_dac.hwptr; + if (s->dma_dac.mapped) + s->dma_dac.count &= s->dma_dac.fragsize-1; + spin_unlock_irqrestore(&s->lock, flags); + return copy_to_user((void *)arg, &cinfo, sizeof(cinfo)); + + case SNDCTL_DSP_GETBLKSIZE: + if (file->f_mode & FMODE_WRITE) { + if ((val = prog_dmabuf(s, 0))) + return val; + return put_user(s->dma_dac.fragsize, (int *)arg); + } + if ((val = prog_dmabuf(s, 1))) + return val; + return put_user(s->dma_adc.fragsize, (int *)arg); + + case SNDCTL_DSP_SETFRAGMENT: + get_user_ret(val, (int *)arg, -EFAULT); + if (file->f_mode & FMODE_READ) { + s->dma_adc.ossfragshift = val & 0xffff; + s->dma_adc.ossmaxfrags = (val >> 16) & 0xffff; + if (s->dma_adc.ossfragshift < 4) + s->dma_adc.ossfragshift = 4; + if (s->dma_adc.ossfragshift > 15) + s->dma_adc.ossfragshift = 15; + if (s->dma_adc.ossmaxfrags < 4) + s->dma_adc.ossmaxfrags = 4; + } + if (file->f_mode & FMODE_WRITE) { + s->dma_dac.ossfragshift = val & 0xffff; + s->dma_dac.ossmaxfrags = (val >> 16) & 0xffff; + if (s->dma_dac.ossfragshift < 4) + s->dma_dac.ossfragshift = 4; + if (s->dma_dac.ossfragshift > 15) + s->dma_dac.ossfragshift = 15; + if (s->dma_dac.ossmaxfrags < 4) + s->dma_dac.ossmaxfrags = 4; + } + return 0; + + case SNDCTL_DSP_SUBDIVIDE: + if ((file->f_mode & FMODE_READ && s->dma_adc.subdivision) || + (file->f_mode & FMODE_WRITE && s->dma_dac.subdivision)) + return -EINVAL; + get_user_ret(val, (int *)arg, -EFAULT); + if (val != 1 && val != 2 && val != 4) + return -EINVAL; + if (file->f_mode & FMODE_READ) + s->dma_adc.subdivision = val; + if (file->f_mode & FMODE_WRITE) + s->dma_dac.subdivision = val; + return 0; + + case SOUND_PCM_READ_RATE: + return put_user((file->f_mode & FMODE_READ) ? s->rateadc : s->ratedac, (int *)arg); + + case SOUND_PCM_READ_CHANNELS: + return put_user((s->fmt & ((file->f_mode & FMODE_READ) ? (CM_CFMT_STEREO << CM_CFMT_ADCSHIFT) : (CM_CFMT_STEREO << CM_CFMT_DACSHIFT))) ? 2 : 1, (int *)arg); + + case SOUND_PCM_READ_BITS: + return put_user((s->fmt & ((file->f_mode & FMODE_READ) ? (CM_CFMT_16BIT << CM_CFMT_ADCSHIFT) : (CM_CFMT_16BIT << CM_CFMT_DACSHIFT))) ? 16 : 8, (int *)arg); + + case SOUND_PCM_WRITE_FILTER: + case SNDCTL_DSP_SETSYNCRO: + case SOUND_PCM_READ_FILTER: + return -EINVAL; + + } + return mixer_ioctl(s, cmd, arg); +} + +static int cm_open(struct inode *inode, struct file *file) +{ + int minor = MINOR(inode->i_rdev); + struct cm_state *s = devs; + unsigned char fmtm = ~0, fmts = 0; + + while (s && ((s->dev_audio ^ minor) & ~0xf)) + s = s->next; + if (!s) + return -ENODEV; + VALIDATE_STATE(s); + file->private_data = s; + /* wait for device to become free */ + down(&s->open_sem); + while (s->open_mode & file->f_mode) { + if (file->f_flags & O_NONBLOCK) { + up(&s->open_sem); + return -EBUSY; + } + up(&s->open_sem); + interruptible_sleep_on(&s->open_wait); + if (signal_pending(current)) + return -ERESTARTSYS; + down(&s->open_sem); + } + if (file->f_mode & FMODE_READ) { + fmtm &= ~((CM_CFMT_STEREO | CM_CFMT_16BIT) << CM_CFMT_ADCSHIFT); + if ((minor & 0xf) == SND_DEV_DSP16) + fmts |= CM_CFMT_16BIT << CM_CFMT_ADCSHIFT; + s->dma_adc.ossfragshift = s->dma_adc.ossmaxfrags = s->dma_adc.subdivision = 0; + set_adc_rate(s, 8000); + } + if (file->f_mode & FMODE_WRITE) { + fmtm &= ~((CM_CFMT_STEREO | CM_CFMT_16BIT) << CM_CFMT_DACSHIFT); + if ((minor & 0xf) == SND_DEV_DSP16) + fmts |= CM_CFMT_16BIT << CM_CFMT_DACSHIFT; + s->dma_dac.ossfragshift = s->dma_dac.ossmaxfrags = s->dma_dac.subdivision = 0; + set_dac_rate(s, 8000); + } + set_fmt(s, fmtm, fmts); + s->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE); + up(&s->open_sem); + MOD_INC_USE_COUNT; + return 0; +} + +static int cm_release(struct inode *inode, struct file *file) +{ + struct cm_state *s = (struct cm_state *)file->private_data; + + VALIDATE_STATE(s); + if (file->f_mode & FMODE_WRITE) + drain_dac(s, file->f_flags & O_NONBLOCK); + down(&s->open_sem); + if (file->f_mode & FMODE_WRITE) { + stop_dac(s); + dealloc_dmabuf(&s->dma_dac); + } + if (file->f_mode & FMODE_READ) { + stop_adc(s); + dealloc_dmabuf(&s->dma_adc); + } + s->open_mode &= (~file->f_mode) & (FMODE_READ|FMODE_WRITE); + up(&s->open_sem); + wake_up(&s->open_wait); + MOD_DEC_USE_COUNT; + return 0; +} + +static /*const*/ struct file_operations cm_audio_fops = { + &cm_llseek, + &cm_read, + &cm_write, + NULL, /* readdir */ + &cm_poll, + &cm_ioctl, + &cm_mmap, + &cm_open, + NULL, /* flush */ + &cm_release, + NULL, /* fsync */ + NULL, /* fasync */ + NULL, /* check_media_change */ + NULL, /* revalidate */ + NULL, /* lock */ +}; + +#ifdef CONFIG_SOUND_CMPCI_MIDI +/* --------------------------------------------------------------------- */ + +static ssize_t cm_midi_read(struct file *file, char *buffer, size_t count, loff_t *ppos) +{ + struct cm_state *s = (struct cm_state *)file->private_data; + ssize_t ret; + unsigned long flags; + unsigned ptr; + int cnt; + + VALIDATE_STATE(s); + if (ppos != &file->f_pos) + return -ESPIPE; + if (!access_ok(VERIFY_WRITE, buffer, count)) + return -EFAULT; + ret = 0; + while (count > 0) { + spin_lock_irqsave(&s->lock, flags); + ptr = s->midi.ird; + cnt = MIDIINBUF - ptr; + if (s->midi.icnt < cnt) + cnt = s->midi.icnt; + spin_unlock_irqrestore(&s->lock, flags); + if (cnt > count) + cnt = count; + if (cnt <= 0) { + if (file->f_flags & O_NONBLOCK) + return ret ? ret : -EAGAIN; + interruptible_sleep_on(&s->midi.iwait); + if (signal_pending(current)) + return ret ? ret : -ERESTARTSYS; + continue; + } + if (copy_to_user(buffer, s->midi.ibuf + ptr, cnt)) + return ret ? ret : -EFAULT; + ptr = (ptr + cnt) % MIDIINBUF; + spin_lock_irqsave(&s->lock, flags); + s->midi.ird = ptr; + s->midi.icnt -= cnt; + spin_unlock_irqrestore(&s->lock, flags); + count -= cnt; + buffer += cnt; + ret += cnt; + } + return ret; +} + +static ssize_t cm_midi_write(struct file *file, const char *buffer, size_t count, loff_t *ppos) +{ + struct cm_state *s = (struct cm_state *)file->private_data; + ssize_t ret; + unsigned long flags; + unsigned ptr; + int cnt; + + VALIDATE_STATE(s); + if (ppos != &file->f_pos) + return -ESPIPE; + if (!access_ok(VERIFY_READ, buffer, count)) + return -EFAULT; + ret = 0; + while (count > 0) { + spin_lock_irqsave(&s->lock, flags); + ptr = s->midi.owr; + cnt = MIDIOUTBUF - ptr; + if (s->midi.ocnt + cnt > MIDIOUTBUF) + cnt = MIDIOUTBUF - s->midi.ocnt; + if (cnt <= 0) + cm_handle_midi(s); + spin_unlock_irqrestore(&s->lock, flags); + if (cnt > count) + cnt = count; + if (cnt <= 0) { + if (file->f_flags & O_NONBLOCK) + return ret ? ret : -EAGAIN; + interruptible_sleep_on(&s->midi.owait); + if (signal_pending(current)) + return ret ? ret : -ERESTARTSYS; + continue; + } + if (copy_from_user(s->midi.obuf + ptr, buffer, cnt)) + return ret ? ret : -EFAULT; + ptr = (ptr + cnt) % MIDIOUTBUF; + spin_lock_irqsave(&s->lock, flags); + s->midi.owr = ptr; + s->midi.ocnt += cnt; + spin_unlock_irqrestore(&s->lock, flags); + count -= cnt; + buffer += cnt; + ret += cnt; + spin_lock_irqsave(&s->lock, flags); + cm_handle_midi(s); + spin_unlock_irqrestore(&s->lock, flags); + } + return ret; +} + +static unsigned int cm_midi_poll(struct file *file, struct poll_table_struct *wait) +{ + struct cm_state *s = (struct cm_state *)file->private_data; + unsigned long flags; + unsigned int mask = 0; + + VALIDATE_STATE(s); + if (file->f_mode & FMODE_WRITE) + poll_wait(file, &s->midi.owait, wait); + if (file->f_mode & FMODE_READ) + poll_wait(file, &s->midi.iwait, wait); + spin_lock_irqsave(&s->lock, flags); + if (file->f_mode & FMODE_READ) { + if (s->midi.icnt > 0) + mask |= POLLIN | POLLRDNORM; + } + if (file->f_mode & FMODE_WRITE) { + if (s->midi.ocnt < MIDIOUTBUF) + mask |= POLLOUT | POLLWRNORM; + } + spin_unlock_irqrestore(&s->lock, flags); + return mask; +} + +static int cm_midi_open(struct inode *inode, struct file *file) +{ + int minor = MINOR(inode->i_rdev); + struct cm_state *s = devs; + unsigned long flags; + + while (s && s->dev_midi != minor) + s = s->next; + if (!s) + return -ENODEV; + VALIDATE_STATE(s); + file->private_data = s; + /* wait for device to become free */ + down(&s->open_sem); + while (s->open_mode & (file->f_mode << FMODE_MIDI_SHIFT)) { + if (file->f_flags & O_NONBLOCK) { + up(&s->open_sem); + return -EBUSY; + } + up(&s->open_sem); + interruptible_sleep_on(&s->open_wait); + if (signal_pending(current)) + return -ERESTARTSYS; + down(&s->open_sem); + } + spin_lock_irqsave(&s->lock, flags); + if (!(s->open_mode & (FMODE_MIDI_READ | FMODE_MIDI_WRITE))) { + s->midi.ird = s->midi.iwr = s->midi.icnt = 0; + s->midi.ord = s->midi.owr = s->midi.ocnt = 0; + /* enable MPU-401 */ + outb(inb(s->iobase + CODEC_CMI_FUNCTRL1) | 4, s->iobase + CODEC_CMI_FUNCTRL1); + outb(0xff, s->iomidi+1); /* reset command */ + if (!(inb(s->iomidi+1) & 0x80)) + inb(s->iomidi); + outb(0x3f, s->iomidi+1); /* uart command */ + if (!(inb(s->iomidi+1) & 0x80)) + inb(s->iomidi); + s->midi.ird = s->midi.iwr = s->midi.icnt = 0; + init_timer(&s->midi.timer); + s->midi.timer.expires = jiffies+1; + s->midi.timer.data = (unsigned long)s; + s->midi.timer.function = cm_midi_timer; + add_timer(&s->midi.timer); + } + if (file->f_mode & FMODE_READ) { + s->midi.ird = s->midi.iwr = s->midi.icnt = 0; + } + if (file->f_mode & FMODE_WRITE) { + s->midi.ord = s->midi.owr = s->midi.ocnt = 0; + } + spin_unlock_irqrestore(&s->lock, flags); + s->open_mode |= (file->f_mode << FMODE_MIDI_SHIFT) & (FMODE_MIDI_READ | FMODE_MIDI_WRITE); + up(&s->open_sem); + MOD_INC_USE_COUNT; + return 0; +} + +static int cm_midi_release(struct inode *inode, struct file *file) +{ + struct cm_state *s = (struct cm_state *)file->private_data; + DECLARE_WAITQUEUE(wait, current); + unsigned long flags; + unsigned count, tmo; + + VALIDATE_STATE(s); + + if (file->f_mode & FMODE_WRITE) { + current->state = TASK_INTERRUPTIBLE; + add_wait_queue(&s->midi.owait, &wait); + for (;;) { + spin_lock_irqsave(&s->lock, flags); + count = s->midi.ocnt; + spin_unlock_irqrestore(&s->lock, flags); + if (count <= 0) + break; + if (signal_pending(current)) + break; + if (file->f_flags & O_NONBLOCK) { + remove_wait_queue(&s->midi.owait, &wait); + current->state = TASK_RUNNING; + return -EBUSY; + } + tmo = (count * HZ) / 3100; + if (!schedule_timeout(tmo ? : 1) && tmo) + printk(KERN_DEBUG "cm: midi timed out??\n"); + } + remove_wait_queue(&s->midi.owait, &wait); + current->state = TASK_RUNNING; + } + down(&s->open_sem); + s->open_mode &= (~(file->f_mode << FMODE_MIDI_SHIFT)) & (FMODE_MIDI_READ|FMODE_MIDI_WRITE); + spin_lock_irqsave(&s->lock, flags); + if (!(s->open_mode & (FMODE_MIDI_READ | FMODE_MIDI_WRITE))) { + del_timer(&s->midi.timer); + outb(0xff, s->iomidi+1); /* reset command */ + if (!(inb(s->iomidi+1) & 0x80)) + inb(s->iomidi); + /* disable MPU-401 */ + outb(inb(s->iobase + CODEC_CMI_FUNCTRL1) & ~4, s->iobase + CODEC_CMI_FUNCTRL1); + } + spin_unlock_irqrestore(&s->lock, flags); + up(&s->open_sem); + wake_up(&s->open_wait); + MOD_DEC_USE_COUNT; + return 0; +} + +static /*const*/ struct file_operations cm_midi_fops = { + &cm_llseek, + &cm_midi_read, + &cm_midi_write, + NULL, /* readdir */ + &cm_midi_poll, + NULL, /* ioctl */ + NULL, /* mmap */ + &cm_midi_open, + NULL, /* flush */ + &cm_midi_release, + NULL, /* fsync */ + NULL, /* fasync */ + NULL, /* check_media_change */ + NULL, /* revalidate */ + NULL, /* lock */ +}; +#endif + +/* --------------------------------------------------------------------- */ + +#ifdef CONFIG_SOUND_CMPCI_FM +static int cm_dmfm_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) +{ + static const unsigned char op_offset[18] = { + 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, + 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, + 0x10, 0x11, 0x12, 0x13, 0x14, 0x15 + }; + struct cm_state *s = (struct cm_state *)file->private_data; + struct dm_fm_voice v; + struct dm_fm_note n; + struct dm_fm_params p; + unsigned int io; + unsigned int regb; + + switch (cmd) { + case FM_IOCTL_RESET: + for (regb = 0xb0; regb < 0xb9; regb++) { + outb(regb, s->iosynth); + outb(0, s->iosynth+1); + outb(regb, s->iosynth+2); + outb(0, s->iosynth+3); + } + return 0; + + case FM_IOCTL_PLAY_NOTE: + if (copy_from_user(&n, (void *)arg, sizeof(n))) + return -EFAULT; + if (n.voice >= 18) + return -EINVAL; + if (n.voice >= 9) { + regb = n.voice - 9; + io = s->iosynth+2; + } else { + regb = n.voice; + io = s->iosynth; + } + outb(0xa0 + regb, io); + outb(n.fnum & 0xff, io+1); + outb(0xb0 + regb, io); + outb(((n.fnum >> 8) & 3) | ((n.octave & 7) << 2) | ((n.key_on & 1) << 5), io+1); + return 0; + + case FM_IOCTL_SET_VOICE: + if (copy_from_user(&v, (void *)arg, sizeof(v))) + return -EFAULT; + if (v.voice >= 18) + return -EINVAL; + regb = op_offset[v.voice]; + io = s->iosynth + ((v.op & 1) << 1); + outb(0x20 + regb, io); + outb(((v.am & 1) << 7) | ((v.vibrato & 1) << 6) | ((v.do_sustain & 1) << 5) | + ((v.kbd_scale & 1) << 4) | (v.harmonic & 0xf), io+1); + outb(0x40 + regb, io); + outb(((v.scale_level & 0x3) << 6) | (v.volume & 0x3f), io+1); + outb(0x60 + regb, io); + outb(((v.attack & 0xf) << 4) | (v.decay & 0xf), io+1); + outb(0x80 + regb, io); + outb(((v.sustain & 0xf) << 4) | (v.release & 0xf), io+1); + outb(0xe0 + regb, io); + outb(v.waveform & 0x7, io+1); + if (n.voice >= 9) { + regb = n.voice - 9; + io = s->iosynth+2; + } else { + regb = n.voice; + io = s->iosynth; + } + outb(0xc0 + regb, io); + outb(((v.right & 1) << 5) | ((v.left & 1) << 4) | ((v.feedback & 7) << 1) | + (v.connection & 1), io+1); + return 0; + + case FM_IOCTL_SET_PARAMS: + if (copy_from_user(&p, (void *)arg, sizeof(p))) + return -EFAULT; + outb(0x08, s->iosynth); + outb((p.kbd_split & 1) << 6, s->iosynth+1); + outb(0xbd, s->iosynth); + outb(((p.am_depth & 1) << 7) | ((p.vib_depth & 1) << 6) | ((p.rhythm & 1) << 5) | ((p.bass & 1) << 4) | + ((p.snare & 1) << 3) | ((p.tomtom & 1) << 2) | ((p.cymbal & 1) << 1) | (p.hihat & 1), s->iosynth+1); + return 0; + + case FM_IOCTL_SET_OPL: + outb(4, s->iosynth+2); + outb(arg, s->iosynth+3); + return 0; + + case FM_IOCTL_SET_MODE: + outb(5, s->iosynth+2); + outb(arg & 1, s->iosynth+3); + return 0; + + default: + return -EINVAL; + } +} + +static int cm_dmfm_open(struct inode *inode, struct file *file) +{ + int minor = MINOR(inode->i_rdev); + struct cm_state *s = devs; + + while (s && s->dev_dmfm != minor) + s = s->next; + if (!s) + return -ENODEV; + VALIDATE_STATE(s); + file->private_data = s; + /* wait for device to become free */ + down(&s->open_sem); + while (s->open_mode & FMODE_DMFM) { + if (file->f_flags & O_NONBLOCK) { + up(&s->open_sem); + return -EBUSY; + } + up(&s->open_sem); + interruptible_sleep_on(&s->open_wait); + if (signal_pending(current)) + return -ERESTARTSYS; + down(&s->open_sem); + } + /* init the stuff */ + outb(1, s->iosynth); + outb(0x20, s->iosynth+1); /* enable waveforms */ + outb(4, s->iosynth+2); + outb(0, s->iosynth+3); /* no 4op enabled */ + outb(5, s->iosynth+2); + outb(1, s->iosynth+3); /* enable OPL3 */ + s->open_mode |= FMODE_DMFM; + up(&s->open_sem); + MOD_INC_USE_COUNT; + return 0; +} + +static int cm_dmfm_release(struct inode *inode, struct file *file) +{ + struct cm_state *s = (struct cm_state *)file->private_data; + unsigned int regb; + + VALIDATE_STATE(s); + down(&s->open_sem); + s->open_mode &= ~FMODE_DMFM; + for (regb = 0xb0; regb < 0xb9; regb++) { + outb(regb, s->iosynth); + outb(0, s->iosynth+1); + outb(regb, s->iosynth+2); + outb(0, s->iosynth+3); + } + up(&s->open_sem); + wake_up(&s->open_wait); + MOD_DEC_USE_COUNT; + return 0; +} + +static /*const*/ struct file_operations cm_dmfm_fops = { + &cm_llseek, + NULL, /* read */ + NULL, /* write */ + NULL, /* readdir */ + NULL, /* poll */ + &cm_dmfm_ioctl, + NULL, /* mmap */ + &cm_dmfm_open, + NULL, /* flush */ + &cm_dmfm_release, + NULL, /* fsync */ + NULL, /* fasync */ + NULL, /* check_media_change */ + NULL, /* revalidate */ + NULL, /* lock */ +}; +#endif /* CONFIG_SOUND_CMPCI_FM */ + +/* --------------------------------------------------------------------- */ + +/* maximum number of devices */ +#define NR_DEVICE 5 + +#if 0 +static int reverb[NR_DEVICE] = { 0, }; + +static int wavetable[NR_DEVICE] = { 0, }; +#endif + +/* --------------------------------------------------------------------- */ + +static struct initvol { + int mixch; + int vol; +} initvol[] __initdata = { + { SOUND_MIXER_WRITE_CD, 0x4040 }, + { SOUND_MIXER_WRITE_LINE, 0x4040 }, + { SOUND_MIXER_WRITE_MIC, 0x4040 }, + { SOUND_MIXER_WRITE_SYNTH, 0x4040 }, + { SOUND_MIXER_WRITE_VOLUME, 0x4040 }, + { SOUND_MIXER_WRITE_PCM, 0x4040 } +}; + +#ifdef MODULE +__initfunc(int init_module(void)) +#else +__initfunc(int init_cmpci(void)) +#endif +{ + struct cm_state *s; + struct pci_dev *pcidev = NULL; + mm_segment_t fs; + int i, val, index = 0; + struct { + unsigned short deviceid; + char *devicename; + } devicetable[] = + { + { PCI_DEVICE_ID_CMEDIA_CM8338A, "CM8338A" }, + { PCI_DEVICE_ID_CMEDIA_CM8338B, "CM8338B" }, + { PCI_DEVICE_ID_CMEDIA_CM8738, "CM8738" }, + }; + char *devicename = "unknown"; + +#ifdef CONFIG_PCI + if (!pci_present()) /* No PCI bus in this machine! */ +#endif + return -ENODEV; + printk(KERN_INFO "cm: version v1.1 time " __TIME__ " " __DATE__ "\n"); +#if 0 + if (!(wavetable_mem = __get_free_pages(GFP_KERNEL, 20-PAGE_SHIFT))) + printk(KERN_INFO "cm: cannot allocate 1MB of contiguous nonpageable memory for wavetable data\n"); +#endif + while (index < NR_DEVICE && pcidev == NULL && ( + (pcidev = pci_find_device(PCI_VENDOR_ID_CMEDIA, PCI_DEVICE_ID_CMEDIA_CM8338A, pcidev)) || + (pcidev = pci_find_device(PCI_VENDOR_ID_CMEDIA, PCI_DEVICE_ID_CMEDIA_CM8338B, pcidev)) || + (pcidev = pci_find_device(PCI_VENDOR_ID_CMEDIA, PCI_DEVICE_ID_CMEDIA_CM8738, pcidev)))) { + if (pcidev->irq == 0) + continue; + if (!(s = kmalloc(sizeof(struct cm_state), GFP_KERNEL))) { + printk(KERN_WARNING "cm: out of memory\n"); + continue; + } + /* search device name */ + for (i = 0; i < sizeof(devicetable) / sizeof(devicetable[0]); i++) + { + if (devicetable[i].deviceid == pcidev->device) + { + devicename = devicetable[i].devicename; + break; + } + } + memset(s, 0, sizeof(struct cm_state)); + init_waitqueue_head(&s->dma_adc.wait); + init_waitqueue_head(&s->dma_dac.wait); + init_waitqueue_head(&s->open_wait); + init_waitqueue_head(&s->midi.iwait); + init_waitqueue_head(&s->midi.owait); + init_MUTEX(&s->open_sem); + s->magic = CM_MAGIC; + s->iobase = pcidev->base_address[0] & PCI_BASE_ADDRESS_IO_MASK; +#ifdef CONFIG_SOUND_CMPCI_FM + s->iosynth = 0x388; +#endif +#ifdef CONFIG_SOUND_CMPCI_MIDI + s->iomidi = 0x330; +#endif + if (s->iobase == 0) + continue; + s->irq = pcidev->irq; + + if (check_region(s->iobase, CM_EXTENT_CODEC)) { + printk(KERN_ERR "cm: io ports %#x-%#x in use\n", s->iobase, s->iobase+CM_EXTENT_CODEC-1); + goto err_region5; + } + request_region(s->iobase, CM_EXTENT_CODEC, "cmpci"); +#ifdef CONFIG_SOUND_CMPCI_MIDI + if (check_region(s->iomidi, CM_EXTENT_MIDI)) { + printk(KERN_ERR "cm: io ports %#x-%#x in use\n", s->iomidi, s->iomidi+CM_EXTENT_MIDI-1); + goto err_region4; + } + request_region(s->iomidi, CM_EXTENT_MIDI, "cmpci Midi"); + /* set IO based at 0x330 */ + outb(inb(s->iobase + CODEC_CMI_LEGACY_CTRL + 3) & ~0x60, s->iobase + CODEC_CMI_LEGACY_CTRL + 3); +#endif +#ifdef CONFIG_SOUND_CMPCI_FM + if (check_region(s->iosynth, CM_EXTENT_SYNTH)) { + printk(KERN_ERR "cm: io ports %#x-%#x in use\n", s->iosynth, s->iosynth+CM_EXTENT_SYNTH-1); + goto err_region1; + } + request_region(s->iosynth, CM_EXTENT_SYNTH, "cmpci FM"); + /* enable FM */ + outb(inb(s->iobase + CODEC_CMI_MISC_CTRL + 2) | 8, s->iobase + CODEC_CMI_MISC_CTRL); +#endif + /* initialize codec registers */ + outb(0, s->iobase + CODEC_CMI_INT_HLDCLR + 2); /* disable ints */ + outb(0, s->iobase + CODEC_CMI_FUNCTRL0 + 2); /* reset channels */ + /* reset mixer */ + wrmixer(s, DSP_MIX_DATARESETIDX, 0); + + /* request irq */ + if (request_irq(s->irq, cm_interrupt, SA_SHIRQ, "cmpci", s)) { + printk(KERN_ERR "cm: irq %u in use\n", s->irq); + goto err_irq; + } + printk(KERN_INFO "cm: found %s adapter at io %#06x irq %u\n", + devicename, s->iobase, s->irq); + /* register devices */ + if ((s->dev_audio = register_sound_dsp(&cm_audio_fops, -1)) < 0) + goto err_dev1; + if ((s->dev_mixer = register_sound_mixer(&cm_mixer_fops, -1)) < 0) + goto err_dev2; +#ifdef CONFIG_SOUND_CMPCI_MIDI + if ((s->dev_midi = register_sound_midi(&cm_midi_fops, -1)) < 0) + goto err_dev3; +#endif +#ifdef CONFIG_SOUND_CMPCI_FM + if ((s->dev_dmfm = register_sound_special(&cm_dmfm_fops, 15 /* ?? */)) < 0) + goto err_dev4; +#endif + /* initialize the chips */ + fs = get_fs(); + set_fs(KERNEL_DS); + /* set mixer output */ + frobindir(s, DSP_MIX_OUTMIXIDX, 0x1f, 0x1f); + /* set mixer input */ + val = SOUND_MASK_LINE|SOUND_MASK_SYNTH|SOUND_MASK_CD|SOUND_MASK_MIC; + mixer_ioctl(s, SOUND_MIXER_WRITE_RECSRC, (unsigned long)&val); + for (i = 0; i < sizeof(initvol)/sizeof(initvol[0]); i++) { + val = initvol[i].vol; + mixer_ioctl(s, initvol[i].mixch, (unsigned long)&val); + } + set_fs(fs); + /* queue it for later freeing */ + s->next = devs; + devs = s; + index++; + continue; + + err_dev4: + unregister_sound_midi(s->dev_midi); + err_dev3: + unregister_sound_mixer(s->dev_mixer); + err_dev2: + unregister_sound_dsp(s->dev_audio); + err_dev1: + printk(KERN_ERR "cm: cannot register misc device\n"); + free_irq(s->irq, s); + err_irq: +#ifdef CONFIG_SOUND_CMPCI_FM + release_region(s->iosynth, CM_EXTENT_SYNTH); + err_region1: +#endif +#ifdef CONFIG_SOUND_CMPCI_MIDI + release_region(s->iomidi, CM_EXTENT_MIDI); +#endif + err_region4: + release_region(s->iobase, CM_EXTENT_CODEC); + err_region5: + kfree_s(s, sizeof(struct cm_state)); + } + if (!devs) { + if (wavetable_mem) + free_pages(wavetable_mem, 20-PAGE_SHIFT); + return -ENODEV; + } + return 0; +} + +/* --------------------------------------------------------------------- */ + +#ifdef MODULE + +#if 0 +MODULE_PARM(wavetable, "1-" __MODULE_STRING(NR_DEVICE) "i"); +MODULE_PARM_DESC(wavetable, "if 1 the wavetable synth is enabled"); +#endif + +MODULE_AUTHOR("ChenLi Tien, cltien@home.com"); +MODULE_DESCRIPTION("CMPCI Audio Driver"); + +void cleanup_module(void) +{ + struct cm_state *s; + + while ((s = devs)) { + devs = devs->next; + outb(0, s->iobase + CODEC_CMI_INT_HLDCLR + 2); /* disable ints */ + synchronize_irq(); + outb(0, s->iobase + CODEC_CMI_FUNCTRL0 + 2); /* reset channels */ + free_irq(s->irq, s); + + /* reset mixer */ + wrmixer(s, DSP_MIX_DATARESETIDX, 0); + + release_region(s->iobase, CM_EXTENT_CODEC); +#ifdef CONFIG_SOUND_CMPCI_MIDI + release_region(s->iomidi, CM_EXTENT_MIDI); +#endif +#ifdef CONFIG_SOUND_CMPCI_FM + release_region(s->iosynth, CM_EXTENT_SYNTH); +#endif + unregister_sound_dsp(s->dev_audio); + unregister_sound_mixer(s->dev_mixer); +#ifdef CONFIG_SOUND_CMPCI_MIDI + unregister_sound_midi(s->dev_midi); +#endif +#ifdef CONFIG_SOUND_CMPCI_FM + unregister_sound_special(s->dev_dmfm); +#endif + kfree_s(s, sizeof(struct cm_state)); + } + if (wavetable_mem) + free_pages(wavetable_mem, 20-PAGE_SHIFT); + printk(KERN_INFO "cm: unloading\n"); +} + +#endif /* MODULE */ |