patch-2.3.4 linux/drivers/sound/cmpci.c
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- Lines: 2392
- Date:
Wed May 26 09:35:00 1999
- Orig file:
v2.3.3/linux/drivers/sound/cmpci.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.3.3/linux/drivers/sound/cmpci.c linux/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 */
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)