Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 2691 insertions, 0 deletions

diff --git a/sound/oss/ymfpci.c b/sound/oss/ymfpci.c
new file mode 100644
index 000000000000..05203ad523f7
--- /dev/null
+++ b/sound/oss/ymfpci.c
@@ -0,0 +1,2691 @@
+/*
+ *  Copyright 1999 Jaroslav Kysela <perex@suse.cz>
+ *  Copyright 2000 Alan Cox <alan@redhat.com>
+ *  Copyright 2001 Kai Germaschewski <kai@tp1.ruhr-uni-bochum.de>
+ *  Copyright 2002 Pete Zaitcev <zaitcev@yahoo.com>
+ *
+ *  Yamaha YMF7xx driver.
+ *
+ *  This code is a result of high-speed collision
+ *  between ymfpci.c of ALSA and cs46xx.c of Linux.
+ *  -- Pete Zaitcev <zaitcev@yahoo.com>; 2000/09/18
+ *
+ *   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.
+ *
+ * TODO:
+ *  - Use P44Slot for 44.1 playback (beware of idle buzzing in P44Slot).
+ *  - 96KHz playback for DVD - use pitch of 2.0.
+ *  - Retain DMA buffer on close, do not wait the end of frame.
+ *  - Resolve XXX tagged questions.
+ *  - Cannot play 5133Hz.
+ *  - 2001/01/07 Consider if we can remove voice_lock, like so:
+ *     : Allocate/deallocate voices in open/close under semafore.
+ *     : We access voices in interrupt, that only for pcms that open.
+ *    voice_lock around playback_prepare closes interrupts for insane duration.
+ *  - Revisit the way voice_alloc is done - too confusing, overcomplicated.
+ *    Should support various channel types, however.
+ *  - Remove prog_dmabuf from read/write, leave it in open.
+ *  - 2001/01/07 Replace the OPL3 part of CONFIG_SOUND_YMFPCI_LEGACY code with
+ *    native synthesizer through a playback slot.
+ *  - 2001/11/29 ac97_save_state
+ *    Talk to Kai to remove ac97_save_state before it's too late!
+ *  - Second AC97
+ *  - Restore S/PDIF - Toshibas have it.
+ *
+ * Kai used pci_alloc_consistent for DMA buffer, which sounds a little
+ * unconventional. However, given how small our fragments can be,
+ * a little uncached access is perhaps better than endless flushing.
+ * On i386 and other I/O-coherent architectures pci_alloc_consistent
+ * is entirely harmless.
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/delay.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/poll.h>
+#include <linux/soundcard.h>
+#include <linux/ac97_codec.h>
+#include <linux/sound.h>
+
+#include <asm/io.h>
+#include <asm/dma.h>
+#include <asm/uaccess.h>
+
+#ifdef CONFIG_SOUND_YMFPCI_LEGACY
+# include "sound_config.h"
+# include "mpu401.h"
+#endif
+#include "ymfpci.h"
+
+/*
+ * I do not believe in debug levels as I never can guess what
+ * part of the code is going to be problematic in the future.
+ * Don't forget to run your klogd with -c 8.
+ *
+ * Example (do not remove):
+ * #define YMFDBG(fmt, arg...)  do{ printk(KERN_DEBUG fmt, ##arg); }while(0)
+ */
+#define YMFDBGW(fmt, arg...)  /* */	/* write counts */
+#define YMFDBGI(fmt, arg...)  /* */	/* interrupts */
+#define YMFDBGX(fmt, arg...)  /* */	/* ioctl */
+
+static int ymf_playback_trigger(ymfpci_t *unit, struct ymf_pcm *ypcm, int cmd);
+static void ymf_capture_trigger(ymfpci_t *unit, struct ymf_pcm *ypcm, int cmd);
+static void ymfpci_voice_free(ymfpci_t *unit, ymfpci_voice_t *pvoice);
+static int ymf_capture_alloc(struct ymf_unit *unit, int *pbank);
+static int ymf_playback_prepare(struct ymf_state *state);
+static int ymf_capture_prepare(struct ymf_state *state);
+static struct ymf_state *ymf_state_alloc(ymfpci_t *unit);
+
+static void ymfpci_aclink_reset(struct pci_dev * pci);
+static void ymfpci_disable_dsp(ymfpci_t *unit);
+static void ymfpci_download_image(ymfpci_t *codec);
+static void ymf_memload(ymfpci_t *unit);
+
+static DEFINE_SPINLOCK(ymf_devs_lock);
+static LIST_HEAD(ymf_devs);
+
+/*
+ *  constants
+ */
+
+static struct pci_device_id ymf_id_tbl[] = {
+#define DEV(v, d, data) \
+  { PCI_VENDOR_ID_##v, PCI_DEVICE_ID_##v##_##d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (unsigned long)data }
+	DEV (YAMAHA, 724,  "YMF724"),
+	DEV (YAMAHA, 724F, "YMF724F"),
+	DEV (YAMAHA, 740,  "YMF740"),
+	DEV (YAMAHA, 740C, "YMF740C"),
+	DEV (YAMAHA, 744,  "YMF744"),
+	DEV (YAMAHA, 754,  "YMF754"),
+#undef DEV
+	{ }
+};
+MODULE_DEVICE_TABLE(pci, ymf_id_tbl);
+
+/*
+ *  common I/O routines
+ */
+
+static inline void ymfpci_writeb(ymfpci_t *codec, u32 offset, u8 val)
+{
+	writeb(val, codec->reg_area_virt + offset);
+}
+
+static inline u16 ymfpci_readw(ymfpci_t *codec, u32 offset)
+{
+	return readw(codec->reg_area_virt + offset);
+}
+
+static inline void ymfpci_writew(ymfpci_t *codec, u32 offset, u16 val)
+{
+	writew(val, codec->reg_area_virt + offset);
+}
+
+static inline u32 ymfpci_readl(ymfpci_t *codec, u32 offset)
+{
+	return readl(codec->reg_area_virt + offset);
+}
+
+static inline void ymfpci_writel(ymfpci_t *codec, u32 offset, u32 val)
+{
+	writel(val, codec->reg_area_virt + offset);
+}
+
+static int ymfpci_codec_ready(ymfpci_t *codec, int secondary, int sched)
+{
+	signed long end_time;
+	u32 reg = secondary ? YDSXGR_SECSTATUSADR : YDSXGR_PRISTATUSADR;
+	
+	end_time = jiffies + 3 * (HZ / 4);
+	do {
+		if ((ymfpci_readw(codec, reg) & 0x8000) == 0)
+			return 0;
+		if (sched) {
+			set_current_state(TASK_UNINTERRUPTIBLE);
+			schedule_timeout(1);
+		}
+	} while (end_time - (signed long)jiffies >= 0);
+	printk(KERN_ERR "ymfpci_codec_ready: codec %i is not ready [0x%x]\n",
+	    secondary, ymfpci_readw(codec, reg));
+	return -EBUSY;
+}
+
+static void ymfpci_codec_write(struct ac97_codec *dev, u8 reg, u16 val)
+{
+	ymfpci_t *codec = dev->private_data;
+	u32 cmd;
+
+	spin_lock(&codec->ac97_lock);
+	/* XXX Do make use of dev->id */
+	ymfpci_codec_ready(codec, 0, 0);
+	cmd = ((YDSXG_AC97WRITECMD | reg) << 16) | val;
+	ymfpci_writel(codec, YDSXGR_AC97CMDDATA, cmd);
+	spin_unlock(&codec->ac97_lock);
+}
+
+static u16 _ymfpci_codec_read(ymfpci_t *unit, u8 reg)
+{
+	int i;
+
+	if (ymfpci_codec_ready(unit, 0, 0))
+		return ~0;
+	ymfpci_writew(unit, YDSXGR_AC97CMDADR, YDSXG_AC97READCMD | reg);
+	if (ymfpci_codec_ready(unit, 0, 0))
+		return ~0;
+	if (unit->pci->device == PCI_DEVICE_ID_YAMAHA_744 && unit->rev < 2) {
+		for (i = 0; i < 600; i++)
+			ymfpci_readw(unit, YDSXGR_PRISTATUSDATA);
+	}
+	return ymfpci_readw(unit, YDSXGR_PRISTATUSDATA);
+}
+
+static u16 ymfpci_codec_read(struct ac97_codec *dev, u8 reg)
+{
+	ymfpci_t *unit = dev->private_data;
+	u16 ret;
+	
+	spin_lock(&unit->ac97_lock);
+	ret = _ymfpci_codec_read(unit, reg);
+	spin_unlock(&unit->ac97_lock);
+	
+	return ret;
+}
+
+/*
+ *  Misc routines
+ */
+
+/*
+ * Calculate the actual sampling rate relatetively to the base clock (48kHz).
+ */
+static u32 ymfpci_calc_delta(u32 rate)
+{
+	switch (rate) {
+	case 8000:	return 0x02aaab00;
+	case 11025:	return 0x03accd00;
+	case 16000:	return 0x05555500;
+	case 22050:	return 0x07599a00;
+	case 32000:	return 0x0aaaab00;
+	case 44100:	return 0x0eb33300;
+	default:	return ((rate << 16) / 48000) << 12;
+	}
+}
+
+static u32 def_rate[8] = {
+	100, 2000, 8000, 11025, 16000, 22050, 32000, 48000
+};
+
+static u32 ymfpci_calc_lpfK(u32 rate)
+{
+	u32 i;
+	static u32 val[8] = {
+		0x00570000, 0x06AA0000, 0x18B20000, 0x20930000,
+		0x2B9A0000, 0x35A10000, 0x3EAA0000, 0x40000000
+	};
+	
+	if (rate == 44100)
+		return 0x40000000;	/* FIXME: What's the right value? */
+	for (i = 0; i < 8; i++)
+		if (rate <= def_rate[i])
+			return val[i];
+	return val[0];
+}
+
+static u32 ymfpci_calc_lpfQ(u32 rate)
+{
+	u32 i;
+	static u32 val[8] = {
+		0x35280000, 0x34A70000, 0x32020000, 0x31770000,
+		0x31390000, 0x31C90000, 0x33D00000, 0x40000000
+	};
+	
+	if (rate == 44100)
+		return 0x370A0000;
+	for (i = 0; i < 8; i++)
+		if (rate <= def_rate[i])
+			return val[i];
+	return val[0];
+}
+
+static u32 ymf_calc_lend(u32 rate)
+{
+	return (rate * YMF_SAMPF) / 48000;
+}
+
+/*
+ * We ever allow only a few formats, but let's be generic, for smaller surprise.
+ */
+static int ymf_pcm_format_width(int format)
+{
+	static int mask16 = AFMT_S16_LE|AFMT_S16_BE|AFMT_U16_LE|AFMT_U16_BE;
+
+	if ((format & (format-1)) != 0) {
+		printk(KERN_ERR "ymfpci: format 0x%x is not a power of 2\n", format);
+		return 8;
+	}
+
+	if (format == AFMT_IMA_ADPCM) return 4;
+	if ((format & mask16) != 0) return 16;
+	return 8;
+}
+
+static void ymf_pcm_update_shift(struct ymf_pcm_format *f)
+{
+	f->shift = 0;
+	if (f->voices == 2)
+		f->shift++;
+	if (ymf_pcm_format_width(f->format) == 16)
+		f->shift++;
+}
+
+/* Are you sure 32K is not too much? See if mpg123 skips on loaded systems. */
+#define DMABUF_DEFAULTORDER (15-PAGE_SHIFT)
+#define DMABUF_MINORDER 1
+
+/*
+ * Allocate DMA buffer
+ */
+static int alloc_dmabuf(ymfpci_t *unit, struct ymf_dmabuf *dmabuf)
+{
+	void *rawbuf = NULL;
+	dma_addr_t dma_addr;
+	int order;
+	struct page *map, *mapend;
+
+	/* alloc as big a chunk as we can */
+	for (order = DMABUF_DEFAULTORDER; order >= DMABUF_MINORDER; order--) {
+		rawbuf = pci_alloc_consistent(unit->pci, PAGE_SIZE << order, &dma_addr);
+		if (rawbuf)
+			break;
+	}
+	if (!rawbuf)
+		return -ENOMEM;
+
+#if 0
+	printk(KERN_DEBUG "ymfpci: allocated %ld (order = %d) bytes at %p\n",
+	       PAGE_SIZE << order, order, rawbuf);
+#endif
+
+	dmabuf->ready  = dmabuf->mapped = 0;
+	dmabuf->rawbuf = rawbuf;
+	dmabuf->dma_addr = dma_addr;
+	dmabuf->buforder = order;
+
+	/* now mark the pages as reserved; otherwise remap_pfn_range doesn't do what we want */
+	mapend = virt_to_page(rawbuf + (PAGE_SIZE << order) - 1);
+	for (map = virt_to_page(rawbuf); map <= mapend; map++)
+		set_bit(PG_reserved, &map->flags);
+
+	return 0;
+}
+
+/*
+ * Free DMA buffer
+ */
+static void dealloc_dmabuf(ymfpci_t *unit, struct ymf_dmabuf *dmabuf)
+{
+	struct page *map, *mapend;
+
+	if (dmabuf->rawbuf) {
+		/* undo marking the pages as reserved */
+		mapend = virt_to_page(dmabuf->rawbuf + (PAGE_SIZE << dmabuf->buforder) - 1);
+		for (map = virt_to_page(dmabuf->rawbuf); map <= mapend; map++)
+			clear_bit(PG_reserved, &map->flags);
+
+		pci_free_consistent(unit->pci, PAGE_SIZE << dmabuf->buforder,
+		    dmabuf->rawbuf, dmabuf->dma_addr);
+	}
+	dmabuf->rawbuf = NULL;
+	dmabuf->mapped = dmabuf->ready = 0;
+}
+
+static int prog_dmabuf(struct ymf_state *state, int rec)
+{
+	struct ymf_dmabuf *dmabuf;
+	int w_16;
+	unsigned bufsize;
+	unsigned long flags;
+	int redzone, redfrags;
+	int ret;
+
+	w_16 = ymf_pcm_format_width(state->format.format) == 16;
+	dmabuf = rec ? &state->rpcm.dmabuf : &state->wpcm.dmabuf;
+
+	spin_lock_irqsave(&state->unit->reg_lock, flags);
+	dmabuf->hwptr = dmabuf->swptr = 0;
+	dmabuf->total_bytes = 0;
+	dmabuf->count = 0;
+	spin_unlock_irqrestore(&state->unit->reg_lock, flags);
+
+	/* allocate DMA buffer if not allocated yet */
+	if (!dmabuf->rawbuf)
+		if ((ret = alloc_dmabuf(state->unit, dmabuf)))
+			return ret;
+
+	/*
+	 * Create fake fragment sizes and numbers for OSS ioctls.
+	 * Import what Doom might have set with SNDCTL_DSP_SETFRAGMENT.
+	 */
+	bufsize = PAGE_SIZE << dmabuf->buforder;
+	/* By default we give 4 big buffers. */
+	dmabuf->fragshift = (dmabuf->buforder + PAGE_SHIFT - 2);
+	if (dmabuf->ossfragshift > 3 &&
+	    dmabuf->ossfragshift < dmabuf->fragshift) {
+		/* If OSS set smaller fragments, give more smaller buffers. */
+		dmabuf->fragshift = dmabuf->ossfragshift;
+	}
+	dmabuf->fragsize = 1 << dmabuf->fragshift;
+
+	dmabuf->numfrag = bufsize >> dmabuf->fragshift;
+	dmabuf->dmasize = dmabuf->numfrag << dmabuf->fragshift;
+
+	if (dmabuf->ossmaxfrags >= 2) {
+		redzone = ymf_calc_lend(state->format.rate);
+		redzone <<= state->format.shift;
+		redzone *= 3;
+		redfrags = (redzone + dmabuf->fragsize-1) >> dmabuf->fragshift;
+
+		if (dmabuf->ossmaxfrags + redfrags < dmabuf->numfrag) {
+			dmabuf->numfrag = dmabuf->ossmaxfrags + redfrags;
+			dmabuf->dmasize = dmabuf->numfrag << dmabuf->fragshift;
+		}
+	}
+
+	memset(dmabuf->rawbuf, w_16 ? 0 : 0x80, dmabuf->dmasize);
+
+	/*
+	 *	Now set up the ring 
+	 */
+
+	/* XXX   ret = rec? cap_pre(): pbk_pre();  */
+	spin_lock_irqsave(&state->unit->voice_lock, flags);
+	if (rec) {
+		if ((ret = ymf_capture_prepare(state)) != 0) {
+			spin_unlock_irqrestore(&state->unit->voice_lock, flags);
+			return ret;
+		}
+	} else {
+		if ((ret = ymf_playback_prepare(state)) != 0) {
+			spin_unlock_irqrestore(&state->unit->voice_lock, flags);
+			return ret;
+		}
+	}
+	spin_unlock_irqrestore(&state->unit->voice_lock, flags);
+
+	/* set the ready flag for the dma buffer (this comment is not stupid) */
+	dmabuf->ready = 1;
+
+#if 0
+	printk(KERN_DEBUG "prog_dmabuf: rate %d format 0x%x,"
+	    " numfrag %d fragsize %d dmasize %d\n",
+	       state->format.rate, state->format.format, dmabuf->numfrag,
+	       dmabuf->fragsize, dmabuf->dmasize);
+#endif
+
+	return 0;
+}
+
+static void ymf_start_dac(struct ymf_state *state)
+{
+	ymf_playback_trigger(state->unit, &state->wpcm, 1);
+}
+
+// static void ymf_start_adc(struct ymf_state *state)
+// {
+// 	ymf_capture_trigger(state->unit, &state->rpcm, 1);
+// }
+
+/*
+ * Wait until output is drained.
+ * This does not kill the hardware for the sake of ioctls.
+ */
+static void ymf_wait_dac(struct ymf_state *state)
+{
+	struct ymf_unit *unit = state->unit;
+	struct ymf_pcm *ypcm = &state->wpcm;
+	DECLARE_WAITQUEUE(waita, current);
+	unsigned long flags;
+
+	add_wait_queue(&ypcm->dmabuf.wait, &waita);
+
+	spin_lock_irqsave(&unit->reg_lock, flags);
+	if (ypcm->dmabuf.count != 0 && !ypcm->running) {
+		ymf_playback_trigger(unit, ypcm, 1);
+	}
+
+#if 0
+	if (file->f_flags & O_NONBLOCK) {
+		/*
+		 * XXX Our  mistake is to attach DMA buffer to state
+		 * rather than to some per-device structure.
+		 * Cannot skip waiting, can only make it shorter.
+		 */
+	}
+#endif
+
+	set_current_state(TASK_UNINTERRUPTIBLE);
+	while (ypcm->running) {
+		spin_unlock_irqrestore(&unit->reg_lock, flags);
+		schedule();
+		spin_lock_irqsave(&unit->reg_lock, flags);
+		set_current_state(TASK_UNINTERRUPTIBLE);
+	}
+	spin_unlock_irqrestore(&unit->reg_lock, flags);
+
+	set_current_state(TASK_RUNNING);
+	remove_wait_queue(&ypcm->dmabuf.wait, &waita);
+
+	/*
+	 * This function may take up to 4 seconds to reach this point
+	 * (32K circular buffer, 8000 Hz). User notices.
+	 */
+}
+
+/* Can just stop, without wait. Or can we? */
+static void ymf_stop_adc(struct ymf_state *state)
+{
+	struct ymf_unit *unit = state->unit;
+	unsigned long flags;
+
+	spin_lock_irqsave(&unit->reg_lock, flags);
+	ymf_capture_trigger(unit, &state->rpcm, 0);
+	spin_unlock_irqrestore(&unit->reg_lock, flags);
+}
+
+/*
+ *  Hardware start management
+ */
+
+static void ymfpci_hw_start(ymfpci_t *unit)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&unit->reg_lock, flags);
+	if (unit->start_count++ == 0) {
+		ymfpci_writel(unit, YDSXGR_MODE,
+		    ymfpci_readl(unit, YDSXGR_MODE) | 3);
+		unit->active_bank = ymfpci_readl(unit, YDSXGR_CTRLSELECT) & 1;
+	}
+	spin_unlock_irqrestore(&unit->reg_lock, flags);
+}
+
+static void ymfpci_hw_stop(ymfpci_t *unit)
+{
+	unsigned long flags;
+	long timeout = 1000;
+
+	spin_lock_irqsave(&unit->reg_lock, flags);
+	if (--unit->start_count == 0) {
+		ymfpci_writel(unit, YDSXGR_MODE,
+		    ymfpci_readl(unit, YDSXGR_MODE) & ~3);
+		while (timeout-- > 0) {
+			if ((ymfpci_readl(unit, YDSXGR_STATUS) & 2) == 0)
+				break;
+		}
+	}
+	spin_unlock_irqrestore(&unit->reg_lock, flags);
+}
+
+/*
+ *  Playback voice management
+ */
+
+static int voice_alloc(ymfpci_t *codec, ymfpci_voice_type_t type, int pair, ymfpci_voice_t *rvoice[])
+{
+	ymfpci_voice_t *voice, *voice2;
+	int idx;
+
+	for (idx = 0; idx < YDSXG_PLAYBACK_VOICES; idx += pair ? 2 : 1) {
+		voice = &codec->voices[idx];
+		voice2 = pair ? &codec->voices[idx+1] : NULL;
+		if (voice->use || (voice2 && voice2->use))
+			continue;
+		voice->use = 1;
+		if (voice2)
+			voice2->use = 1;
+		switch (type) {
+		case YMFPCI_PCM:
+			voice->pcm = 1;
+			if (voice2)
+				voice2->pcm = 1;
+			break;
+		case YMFPCI_SYNTH:
+			voice->synth = 1;
+			break;
+		case YMFPCI_MIDI:
+			voice->midi = 1;
+			break;
+		}
+		ymfpci_hw_start(codec);
+		rvoice[0] = voice;
+		if (voice2) {
+			ymfpci_hw_start(codec);
+			rvoice[1] = voice2;
+		}
+		return 0;
+	}
+	return -EBUSY;	/* Your audio channel is open by someone else. */
+}
+
+static void ymfpci_voice_free(ymfpci_t *unit, ymfpci_voice_t *pvoice)
+{
+	ymfpci_hw_stop(unit);
+	pvoice->use = pvoice->pcm = pvoice->synth = pvoice->midi = 0;
+	pvoice->ypcm = NULL;
+}
+
+/*
+ */
+
+static void ymf_pcm_interrupt(ymfpci_t *codec, ymfpci_voice_t *voice)
+{
+	struct ymf_pcm *ypcm;
+	int redzone;
+	int pos, delta, swptr;
+	int played, distance;
+	struct ymf_state *state;
+	struct ymf_dmabuf *dmabuf;
+	char silence;
+
+	if ((ypcm = voice->ypcm) == NULL) {
+		return;
+	}
+	if ((state = ypcm->state) == NULL) {
+		ypcm->running = 0;	// lock it
+		return;
+	}
+	dmabuf = &ypcm->dmabuf;
+	spin_lock(&codec->reg_lock);
+	if (ypcm->running) {
+		YMFDBGI("ymfpci: %d, intr bank %d count %d start 0x%x:%x\n",
+		   voice->number, codec->active_bank, dmabuf->count,
+		   le32_to_cpu(voice->bank[0].start),
+		   le32_to_cpu(voice->bank[1].start));
+		silence = (ymf_pcm_format_width(state->format.format) == 16) ?
+		    0 : 0x80;
+		/* We need actual left-hand-side redzone size here. */
+		redzone = ymf_calc_lend(state->format.rate);
+		redzone <<= (state->format.shift + 1);
+		swptr = dmabuf->swptr;
+
+		pos = le32_to_cpu(voice->bank[codec->active_bank].start);
+		pos <<= state->format.shift;
+		if (pos < 0 || pos >= dmabuf->dmasize) {	/* ucode bug */
+			printk(KERN_ERR "ymfpci%d: runaway voice %d: hwptr %d=>%d dmasize %d\n",
+			    codec->dev_audio, voice->number,
+			    dmabuf->hwptr, pos, dmabuf->dmasize);
+			pos = 0;
+		}
+		if (pos < dmabuf->hwptr) {
+			delta = dmabuf->dmasize - dmabuf->hwptr;
+			memset(dmabuf->rawbuf + dmabuf->hwptr, silence, delta);
+			delta += pos;
+			memset(dmabuf->rawbuf, silence, pos);
+		} else {
+			delta = pos - dmabuf->hwptr;
+			memset(dmabuf->rawbuf + dmabuf->hwptr, silence, delta);
+		}
+		dmabuf->hwptr = pos;
+
+		if (dmabuf->count == 0) {
+			printk(KERN_ERR "ymfpci%d: %d: strain: hwptr %d\n",
+			    codec->dev_audio, voice->number, dmabuf->hwptr);
+			ymf_playback_trigger(codec, ypcm, 0);
+		}
+
+		if (swptr <= pos) {
+			distance = pos - swptr;
+		} else {
+			distance = dmabuf->dmasize - (swptr - pos);
+		}
+		if (distance < redzone) {
+			/*
+			 * hwptr inside redzone => DMA ran out of samples.
+			 */
+			if (delta < dmabuf->count) {
+				/*
+				 * Lost interrupt or other screwage.
+				 */
+				printk(KERN_ERR "ymfpci%d: %d: lost: delta %d"
+				    " hwptr %d swptr %d distance %d count %d\n",
+				    codec->dev_audio, voice->number, delta,
+				    dmabuf->hwptr, swptr, distance, dmabuf->count);
+			} else {
+				/*
+				 * Normal end of DMA.
+				 */
+				YMFDBGI("ymfpci%d: %d: done: delta %d"
+				    " hwptr %d swptr %d distance %d count %d\n",
+				    codec->dev_audio, voice->number, delta,
+				    dmabuf->hwptr, swptr, distance, dmabuf->count);
+			}
+			played = dmabuf->count;
+			if (ypcm->running) {
+				ymf_playback_trigger(codec, ypcm, 0);
+			}
+		} else {
+			/*
+			 * hwptr is chipping away towards a remote swptr.
+			 * Calculate other distance and apply it to count.
+			 */
+			if (swptr >= pos) {
+				distance = swptr - pos;
+			} else {
+				distance = dmabuf->dmasize - (pos - swptr);
+			}
+			if (distance < dmabuf->count) {
+				played = dmabuf->count - distance;
+			} else {
+				played = 0;
+			}
+		}
+
+		dmabuf->total_bytes += played;
+		dmabuf->count -= played;
+		if (dmabuf->count < dmabuf->dmasize / 2) {
+			wake_up(&dmabuf->wait);
+		}
+	}
+	spin_unlock(&codec->reg_lock);
+}
+
+static void ymf_cap_interrupt(ymfpci_t *unit, struct ymf_capture *cap)
+{
+	struct ymf_pcm *ypcm;
+	int redzone;
+	struct ymf_state *state;
+	struct ymf_dmabuf *dmabuf;
+	int pos, delta;
+	int cnt;
+
+	if ((ypcm = cap->ypcm) == NULL) {
+		return;
+	}
+	if ((state = ypcm->state) == NULL) {
+		ypcm->running = 0;	// lock it
+		return;
+	}
+	dmabuf = &ypcm->dmabuf;
+	spin_lock(&unit->reg_lock);
+	if (ypcm->running) {
+		redzone = ymf_calc_lend(state->format.rate);
+		redzone <<= (state->format.shift + 1);
+
+		pos = le32_to_cpu(cap->bank[unit->active_bank].start);
+		// pos <<= state->format.shift;
+		if (pos < 0 || pos >= dmabuf->dmasize) {	/* ucode bug */
+			printk(KERN_ERR "ymfpci%d: runaway capture %d: hwptr %d=>%d dmasize %d\n",
+			    unit->dev_audio, ypcm->capture_bank_number,
+			    dmabuf->hwptr, pos, dmabuf->dmasize);
+			pos = 0;
+		}
+		if (pos < dmabuf->hwptr) {
+			delta = dmabuf->dmasize - dmabuf->hwptr;
+			delta += pos;
+		} else {
+			delta = pos - dmabuf->hwptr;
+		}
+		dmabuf->hwptr = pos;
+
+		cnt = dmabuf->count;
+		cnt += delta;
+		if (cnt + redzone > dmabuf->dmasize) {
+			/* Overflow - bump swptr */
+			dmabuf->count = dmabuf->dmasize - redzone;
+			dmabuf->swptr = dmabuf->hwptr + redzone;
+			if (dmabuf->swptr >= dmabuf->dmasize) {
+				dmabuf->swptr -= dmabuf->dmasize;
+			}
+		} else {
+			dmabuf->count = cnt;
+		}
+
+		dmabuf->total_bytes += delta;
+		if (dmabuf->count) {		/* && is_sleeping  XXX */
+			wake_up(&dmabuf->wait);
+		}
+	}
+	spin_unlock(&unit->reg_lock);
+}
+
+static int ymf_playback_trigger(ymfpci_t *codec, struct ymf_pcm *ypcm, int cmd)
+{
+
+	if (ypcm->voices[0] == NULL) {
+		return -EINVAL;
+	}
+	if (cmd != 0) {
+		codec->ctrl_playback[ypcm->voices[0]->number + 1] =
+		    cpu_to_le32(ypcm->voices[0]->bank_ba);
+		if (ypcm->voices[1] != NULL)
+			codec->ctrl_playback[ypcm->voices[1]->number + 1] =
+			    cpu_to_le32(ypcm->voices[1]->bank_ba);
+		ypcm->running = 1;
+	} else {
+		codec->ctrl_playback[ypcm->voices[0]->number + 1] = 0;
+		if (ypcm->voices[1] != NULL)
+			codec->ctrl_playback[ypcm->voices[1]->number + 1] = 0;
+		ypcm->running = 0;
+	}
+	return 0;
+}
+
+static void ymf_capture_trigger(ymfpci_t *codec, struct ymf_pcm *ypcm, int cmd)
+{
+	u32 tmp;
+
+	if (cmd != 0) {
+		tmp = ymfpci_readl(codec, YDSXGR_MAPOFREC) | (1 << ypcm->capture_bank_number);
+		ymfpci_writel(codec, YDSXGR_MAPOFREC, tmp);
+		ypcm->running = 1;
+	} else {
+		tmp = ymfpci_readl(codec, YDSXGR_MAPOFREC) & ~(1 << ypcm->capture_bank_number);
+		ymfpci_writel(codec, YDSXGR_MAPOFREC, tmp);
+		ypcm->running = 0;
+	}
+}
+
+static int ymfpci_pcm_voice_alloc(struct ymf_pcm *ypcm, int voices)
+{
+	struct ymf_unit *unit;
+	int err;
+
+	unit = ypcm->state->unit;
+	if (ypcm->voices[1] != NULL && voices < 2) {
+		ymfpci_voice_free(unit, ypcm->voices[1]);
+		ypcm->voices[1] = NULL;
+	}
+	if (voices == 1 && ypcm->voices[0] != NULL)
+		return 0;		/* already allocated */
+	if (voices == 2 && ypcm->voices[0] != NULL && ypcm->voices[1] != NULL)
+		return 0;		/* already allocated */
+	if (voices > 1) {
+		if (ypcm->voices[0] != NULL && ypcm->voices[1] == NULL) {
+			ymfpci_voice_free(unit, ypcm->voices[0]);
+			ypcm->voices[0] = NULL;
+		}		
+		if ((err = voice_alloc(unit, YMFPCI_PCM, 1, ypcm->voices)) < 0)
+			return err;
+		ypcm->voices[0]->ypcm = ypcm;
+		ypcm->voices[1]->ypcm = ypcm;
+	} else {
+		if ((err = voice_alloc(unit, YMFPCI_PCM, 0, ypcm->voices)) < 0)
+			return err;
+		ypcm->voices[0]->ypcm = ypcm;
+	}
+	return 0;
+}
+
+static void ymf_pcm_init_voice(ymfpci_voice_t *voice, int stereo,
+    int rate, int w_16, unsigned long addr, unsigned int end, int spdif)
+{
+	u32 format;
+	u32 delta = ymfpci_calc_delta(rate);
+	u32 lpfQ = ymfpci_calc_lpfQ(rate);
+	u32 lpfK = ymfpci_calc_lpfK(rate);
+	ymfpci_playback_bank_t *bank;
+	int nbank;
+
+	/*
+	 * The gain is a floating point number. According to the manual,
+	 * bit 31 indicates a sign bit, bit 30 indicates an integer part,
+	 * and bits [29:15] indicate a decimal fraction part. Thus,
+	 * for a gain of 1.0 the constant of 0x40000000 is loaded.
+	 */
+	unsigned default_gain = cpu_to_le32(0x40000000);
+
+	format = (stereo ? 0x00010000 : 0) | (w_16 ? 0 : 0x80000000);
+	if (stereo)
+		end >>= 1;
+	if (w_16)
+		end >>= 1;
+	for (nbank = 0; nbank < 2; nbank++) {
+		bank = &voice->bank[nbank];
+		bank->format = cpu_to_le32(format);
+		bank->loop_default = 0;	/* 0-loops forever, otherwise count */
+		bank->base = cpu_to_le32(addr);
+		bank->loop_start = 0;
+		bank->loop_end = cpu_to_le32(end);
+		bank->loop_frac = 0;
+		bank->eg_gain_end = default_gain;
+		bank->lpfQ = cpu_to_le32(lpfQ);
+		bank->status = 0;
+		bank->num_of_frames = 0;
+		bank->loop_count = 0;
+		bank->start = 0;
+		bank->start_frac = 0;
+		bank->delta =
+		bank->delta_end = cpu_to_le32(delta);
+		bank->lpfK =
+		bank->lpfK_end = cpu_to_le32(lpfK);
+		bank->eg_gain = default_gain;
+		bank->lpfD1 =
+		bank->lpfD2 = 0;
+
+		bank->left_gain = 
+		bank->right_gain =
+		bank->left_gain_end =
+		bank->right_gain_end =
+		bank->eff1_gain =
+		bank->eff2_gain =
+		bank->eff3_gain =
+		bank->eff1_gain_end =
+		bank->eff2_gain_end =
+		bank->eff3_gain_end = 0;
+
+		if (!stereo) {
+			if (!spdif) {
+				bank->left_gain = 
+				bank->right_gain =
+				bank->left_gain_end =
+				bank->right_gain_end = default_gain;
+			} else {
+				bank->eff2_gain =
+				bank->eff2_gain_end =
+				bank->eff3_gain =
+				bank->eff3_gain_end = default_gain;
+			}
+		} else {
+			if (!spdif) {
+				if ((voice->number & 1) == 0) {
+					bank->left_gain =
+					bank->left_gain_end = default_gain;
+				} else {
+					bank->format |= cpu_to_le32(1);
+					bank->right_gain =
+					bank->right_gain_end = default_gain;
+				}
+			} else {
+				if ((voice->number & 1) == 0) {
+					bank->eff2_gain =
+					bank->eff2_gain_end = default_gain;
+				} else {
+					bank->format |= cpu_to_le32(1);
+					bank->eff3_gain =
+					bank->eff3_gain_end = default_gain;
+				}
+			}
+		}
+	}
+}
+
+/*
+ * XXX Capture channel allocation is entirely fake at the moment.
+ * We use only one channel and mark it busy as required.
+ */
+static int ymf_capture_alloc(struct ymf_unit *unit, int *pbank)
+{
+	struct ymf_capture *cap;
+	int cbank;
+
+	cbank = 1;		/* Only ADC slot is used for now. */
+	cap = &unit->capture[cbank];
+	if (cap->use)
+		return -EBUSY;
+	cap->use = 1;
+	*pbank = cbank;
+	return 0;
+}
+
+static int ymf_playback_prepare(struct ymf_state *state)
+{
+	struct ymf_pcm *ypcm = &state->wpcm;
+	int err, nvoice;
+
+	if ((err = ymfpci_pcm_voice_alloc(ypcm, state->format.voices)) < 0) {
+		/* Somebody started 32 mpg123's in parallel? */
+		printk(KERN_INFO "ymfpci%d: cannot allocate voice\n",
+		    state->unit->dev_audio);
+		return err;
+	}
+
+	for (nvoice = 0; nvoice < state->format.voices; nvoice++) {
+		ymf_pcm_init_voice(ypcm->voices[nvoice],
+		    state->format.voices == 2, state->format.rate,
+		    ymf_pcm_format_width(state->format.format) == 16,
+		    ypcm->dmabuf.dma_addr, ypcm->dmabuf.dmasize,
+		    ypcm->spdif);
+	}
+	return 0;
+}
+
+static int ymf_capture_prepare(struct ymf_state *state)
+{
+	ymfpci_t *unit = state->unit;
+	struct ymf_pcm *ypcm = &state->rpcm;
+	ymfpci_capture_bank_t * bank;
+	/* XXX This is confusing, gotta rename one of them banks... */
+	int nbank;		/* flip-flop bank */
+	int cbank;		/* input [super-]bank */
+	struct ymf_capture *cap;
+	u32 rate, format;
+
+	if (ypcm->capture_bank_number == -1) {
+		if (ymf_capture_alloc(unit, &cbank) != 0)
+			return -EBUSY;
+
+		ypcm->capture_bank_number = cbank;
+
+		cap = &unit->capture[cbank];
+		cap->bank = unit->bank_capture[cbank][0];
+		cap->ypcm = ypcm;
+		ymfpci_hw_start(unit);
+	}
+
+	// ypcm->frag_size = snd_pcm_lib_transfer_fragment(substream);
+	// frag_size is replaced with nonfragged byte-aligned rolling buffer
+	rate = ((48000 * 4096) / state->format.rate) - 1;
+	format = 0;
+	if (state->format.voices == 2)
+		format |= 2;
+	if (ymf_pcm_format_width(state->format.format) == 8)
+		format |= 1;
+	switch (ypcm->capture_bank_number) {
+	case 0:
+		ymfpci_writel(unit, YDSXGR_RECFORMAT, format);
+		ymfpci_writel(unit, YDSXGR_RECSLOTSR, rate);
+		break;
+	case 1:
+		ymfpci_writel(unit, YDSXGR_ADCFORMAT, format);
+		ymfpci_writel(unit, YDSXGR_ADCSLOTSR, rate);
+		break;
+	}
+	for (nbank = 0; nbank < 2; nbank++) {
+		bank = unit->bank_capture[ypcm->capture_bank_number][nbank];
+		bank->base = cpu_to_le32(ypcm->dmabuf.dma_addr);
+		// bank->loop_end = ypcm->dmabuf.dmasize >> state->format.shift;
+		bank->loop_end = cpu_to_le32(ypcm->dmabuf.dmasize);
+		bank->start = 0;
+		bank->num_of_loops = 0;
+	}
+#if 0 /* s/pdif */
+	if (state->digital.dig_valid)
+		/*state->digital.type == SND_PCM_DIG_AES_IEC958*/
+		ymfpci_writew(codec, YDSXGR_SPDIFOUTSTATUS,
+		    state->digital.dig_status[0] | (state->digital.dig_status[1] << 8));
+#endif
+	return 0;
+}
+
+static irqreturn_t ymf_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+	ymfpci_t *codec = dev_id;
+	u32 status, nvoice, mode;
+	struct ymf_voice *voice;
+	struct ymf_capture *cap;
+
+	status = ymfpci_readl(codec, YDSXGR_STATUS);
+	if (status & 0x80000000) {
+		codec->active_bank = ymfpci_readl(codec, YDSXGR_CTRLSELECT) & 1;
+		spin_lock(&codec->voice_lock);
+		for (nvoice = 0; nvoice < YDSXG_PLAYBACK_VOICES; nvoice++) {
+			voice = &codec->voices[nvoice];
+			if (voice->use)
+				ymf_pcm_interrupt(codec, voice);
+		}
+		for (nvoice = 0; nvoice < YDSXG_CAPTURE_VOICES; nvoice++) {
+			cap = &codec->capture[nvoice];
+			if (cap->use)
+				ymf_cap_interrupt(codec, cap);
+		}
+		spin_unlock(&codec->voice_lock);
+		spin_lock(&codec->reg_lock);
+		ymfpci_writel(codec, YDSXGR_STATUS, 0x80000000);
+		mode = ymfpci_readl(codec, YDSXGR_MODE) | 2;
+		ymfpci_writel(codec, YDSXGR_MODE, mode);
+		spin_unlock(&codec->reg_lock);
+	}
+
+	status = ymfpci_readl(codec, YDSXGR_INTFLAG);
+	if (status & 1) {
+		/* timer handler */
+		ymfpci_writel(codec, YDSXGR_INTFLAG, ~0);
+	}
+	return IRQ_HANDLED;
+}
+
+static void ymf_pcm_free_substream(struct ymf_pcm *ypcm)
+{
+	unsigned long flags;
+	struct ymf_unit *unit;
+
+	unit = ypcm->state->unit;
+
+	if (ypcm->type == PLAYBACK_VOICE) {
+		spin_lock_irqsave(&unit->voice_lock, flags);
+		if (ypcm->voices[1])
+			ymfpci_voice_free(unit, ypcm->voices[1]);
+		if (ypcm->voices[0])
+			ymfpci_voice_free(unit, ypcm->voices[0]);
+		spin_unlock_irqrestore(&unit->voice_lock, flags);
+	} else {
+		if (ypcm->capture_bank_number != -1) {
+			unit->capture[ypcm->capture_bank_number].use = 0;
+			ypcm->capture_bank_number = -1;
+			ymfpci_hw_stop(unit);
+		}
+	}
+}
+
+static struct ymf_state *ymf_state_alloc(ymfpci_t *unit)
+{
+	struct ymf_pcm *ypcm;
+	struct ymf_state *state;
+
+	if ((state = kmalloc(sizeof(struct ymf_state), GFP_KERNEL)) == NULL) {
+		goto out0;
+	}
+	memset(state, 0, sizeof(struct ymf_state));
+
+	ypcm = &state->wpcm;
+	ypcm->state = state;
+	ypcm->type = PLAYBACK_VOICE;
+	ypcm->capture_bank_number = -1;
+	init_waitqueue_head(&ypcm->dmabuf.wait);
+
+	ypcm = &state->rpcm;
+	ypcm->state = state;
+	ypcm->type = CAPTURE_AC97;
+	ypcm->capture_bank_number = -1;
+	init_waitqueue_head(&ypcm->dmabuf.wait);
+
+	state->unit = unit;
+
+	state->format.format = AFMT_U8;
+	state->format.rate = 8000;
+	state->format.voices = 1;
+	ymf_pcm_update_shift(&state->format);
+
+	return state;
+
+out0:
+	return NULL;
+}
+
+/* AES/IEC958 channel status bits */
+#define SND_PCM_AES0_PROFESSIONAL	(1<<0)	/* 0 = consumer, 1 = professional */
+#define SND_PCM_AES0_NONAUDIO		(1<<1)	/* 0 = audio, 1 = non-audio */
+#define SND_PCM_AES0_PRO_EMPHASIS	(7<<2)	/* mask - emphasis */
+#define SND_PCM_AES0_PRO_EMPHASIS_NOTID	(0<<2)	/* emphasis not indicated */
+#define SND_PCM_AES0_PRO_EMPHASIS_NONE	(1<<2)	/* none emphasis */
+#define SND_PCM_AES0_PRO_EMPHASIS_5015	(3<<2)	/* 50/15us emphasis */
+#define SND_PCM_AES0_PRO_EMPHASIS_CCITT	(7<<2)	/* CCITT J.17 emphasis */
+#define SND_PCM_AES0_PRO_FREQ_UNLOCKED	(1<<5)	/* source sample frequency: 0 = locked, 1 = unlocked */
+#define SND_PCM_AES0_PRO_FS		(3<<6)	/* mask - sample frequency */
+#define SND_PCM_AES0_PRO_FS_NOTID	(0<<6)	/* fs not indicated */
+#define SND_PCM_AES0_PRO_FS_44100	(1<<6)	/* 44.1kHz */
+#define SND_PCM_AES0_PRO_FS_48000	(2<<6)	/* 48kHz */
+#define SND_PCM_AES0_PRO_FS_32000	(3<<6)	/* 32kHz */
+#define SND_PCM_AES0_CON_NOT_COPYRIGHT	(1<<2)	/* 0 = copyright, 1 = not copyright */
+#define SND_PCM_AES0_CON_EMPHASIS	(7<<3)	/* mask - emphasis */
+#define SND_PCM_AES0_CON_EMPHASIS_NONE	(0<<3)	/* none emphasis */
+#define SND_PCM_AES0_CON_EMPHASIS_5015	(1<<3)	/* 50/15us emphasis */
+#define SND_PCM_AES0_CON_MODE		(3<<6)	/* mask - mode */
+#define SND_PCM_AES1_PRO_MODE		(15<<0)	/* mask - channel mode */
+#define SND_PCM_AES1_PRO_MODE_NOTID	(0<<0)	/* not indicated */
+#define SND_PCM_AES1_PRO_MODE_STEREOPHONIC (2<<0) /* stereophonic - ch A is left */
+#define SND_PCM_AES1_PRO_MODE_SINGLE	(4<<0)	/* single channel */
+#define SND_PCM_AES1_PRO_MODE_TWO	(8<<0)	/* two channels */
+#define SND_PCM_AES1_PRO_MODE_PRIMARY	(12<<0)	/* primary/secondary */
+#define SND_PCM_AES1_PRO_MODE_BYTE3	(15<<0)	/* vector to byte 3 */
+#define SND_PCM_AES1_PRO_USERBITS	(15<<4)	/* mask - user bits */
+#define SND_PCM_AES1_PRO_USERBITS_NOTID	(0<<4)	/* not indicated */
+#define SND_PCM_AES1_PRO_USERBITS_192	(8<<4)	/* 192-bit structure */
+#define SND_PCM_AES1_PRO_USERBITS_UDEF	(12<<4)	/* user defined application */
+#define SND_PCM_AES1_CON_CATEGORY	0x7f
+#define SND_PCM_AES1_CON_GENERAL	0x00
+#define SND_PCM_AES1_CON_EXPERIMENTAL	0x40
+#define SND_PCM_AES1_CON_SOLIDMEM_MASK	0x0f
+#define SND_PCM_AES1_CON_SOLIDMEM_ID	0x08
+#define SND_PCM_AES1_CON_BROADCAST1_MASK 0x07
+#define SND_PCM_AES1_CON_BROADCAST1_ID	0x04
+#define SND_PCM_AES1_CON_DIGDIGCONV_MASK 0x07
+#define SND_PCM_AES1_CON_DIGDIGCONV_ID	0x02
+#define SND_PCM_AES1_CON_ADC_COPYRIGHT_MASK 0x1f
+#define SND_PCM_AES1_CON_ADC_COPYRIGHT_ID 0x06
+#define SND_PCM_AES1_CON_ADC_MASK	0x1f
+#define SND_PCM_AES1_CON_ADC_ID		0x16
+#define SND_PCM_AES1_CON_BROADCAST2_MASK 0x0f
+#define SND_PCM_AES1_CON_BROADCAST2_ID	0x0e
+#define SND_PCM_AES1_CON_LASEROPT_MASK	0x07
+#define SND_PCM_AES1_CON_LASEROPT_ID	0x01
+#define SND_PCM_AES1_CON_MUSICAL_MASK	0x07
+#define SND_PCM_AES1_CON_MUSICAL_ID	0x05
+#define SND_PCM_AES1_CON_MAGNETIC_MASK	0x07
+#define SND_PCM_AES1_CON_MAGNETIC_ID	0x03
+#define SND_PCM_AES1_CON_IEC908_CD	(SND_PCM_AES1_CON_LASEROPT_ID|0x00)
+#define SND_PCM_AES1_CON_NON_IEC908_CD	(SND_PCM_AES1_CON_LASEROPT_ID|0x08)
+#define SND_PCM_AES1_CON_PCM_CODER	(SND_PCM_AES1_CON_DIGDIGCONV_ID|0x00)
+#define SND_PCM_AES1_CON_SAMPLER	(SND_PCM_AES1_CON_DIGDIGCONV_ID|0x20)
+#define SND_PCM_AES1_CON_MIXER		(SND_PCM_AES1_CON_DIGDIGCONV_ID|0x10)
+#define SND_PCM_AES1_CON_RATE_CONVERTER	(SND_PCM_AES1_CON_DIGDIGCONV_ID|0x18)
+#define SND_PCM_AES1_CON_SYNTHESIZER	(SND_PCM_AES1_CON_MUSICAL_ID|0x00)
+#define SND_PCM_AES1_CON_MICROPHONE	(SND_PCM_AES1_CON_MUSICAL_ID|0x08)
+#define SND_PCM_AES1_CON_DAT		(SND_PCM_AES1_CON_MAGNETIC_ID|0x00)
+#define SND_PCM_AES1_CON_VCR		(SND_PCM_AES1_CON_MAGNETIC_ID|0x08)
+#define SND_PCM_AES1_CON_ORIGINAL	(1<<7)	/* this bits depends on the category code */
+#define SND_PCM_AES2_PRO_SBITS		(7<<0)	/* mask - sample bits */
+#define SND_PCM_AES2_PRO_SBITS_20	(2<<0)	/* 20-bit - coordination */
+#define SND_PCM_AES2_PRO_SBITS_24	(4<<0)	/* 24-bit - main audio */
+#define SND_PCM_AES2_PRO_SBITS_UDEF	(6<<0)	/* user defined application */
+#define SND_PCM_AES2_PRO_WORDLEN	(7<<3)	/* mask - source word length */
+#define SND_PCM_AES2_PRO_WORDLEN_NOTID	(0<<3)	/* not indicated */
+#define SND_PCM_AES2_PRO_WORDLEN_22_18	(2<<3)	/* 22-bit or 18-bit */
+#define SND_PCM_AES2_PRO_WORDLEN_23_19	(4<<3)	/* 23-bit or 19-bit */
+#define SND_PCM_AES2_PRO_WORDLEN_24_20	(5<<3)	/* 24-bit or 20-bit */
+#define SND_PCM_AES2_PRO_WORDLEN_20_16	(6<<3)	/* 20-bit or 16-bit */
+#define SND_PCM_AES2_CON_SOURCE		(15<<0)	/* mask - source number */
+#define SND_PCM_AES2_CON_SOURCE_UNSPEC	(0<<0)	/* unspecified */
+#define SND_PCM_AES2_CON_CHANNEL	(15<<4)	/* mask - channel number */
+#define SND_PCM_AES2_CON_CHANNEL_UNSPEC	(0<<4)	/* unspecified */
+#define SND_PCM_AES3_CON_FS		(15<<0)	/* mask - sample frequency */
+#define SND_PCM_AES3_CON_FS_44100	(0<<0)	/* 44.1kHz */
+#define SND_PCM_AES3_CON_FS_48000	(2<<0)	/* 48kHz */
+#define SND_PCM_AES3_CON_FS_32000	(3<<0)	/* 32kHz */
+#define SND_PCM_AES3_CON_CLOCK		(3<<4)	/* mask - clock accuracy */
+#define SND_PCM_AES3_CON_CLOCK_1000PPM	(0<<4)	/* 1000 ppm */
+#define SND_PCM_AES3_CON_CLOCK_50PPM	(1<<4)	/* 50 ppm */
+#define SND_PCM_AES3_CON_CLOCK_VARIABLE	(2<<4)	/* variable pitch */
+
+/*
+ * User interface
+ */
+
+/*
+ * in this loop, dmabuf.count signifies the amount of data that is
+ * waiting to be copied to the user's buffer.  it is filled by the dma
+ * machine and drained by this loop.
+ */
+static ssize_t
+ymf_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
+{
+	struct ymf_state *state = (struct ymf_state *)file->private_data;
+	struct ymf_dmabuf *dmabuf = &state->rpcm.dmabuf;
+	struct ymf_unit *unit = state->unit;
+	DECLARE_WAITQUEUE(waita, current);
+	ssize_t ret;
+	unsigned long flags;
+	unsigned int swptr;
+	int cnt;			/* This many to go in this revolution */
+
+	if (dmabuf->mapped)
+		return -ENXIO;
+	if (!dmabuf->ready && (ret = prog_dmabuf(state, 1)))
+		return ret;
+	ret = 0;
+
+	add_wait_queue(&dmabuf->wait, &waita);
+	set_current_state(TASK_INTERRUPTIBLE);
+	while (count > 0) {
+		spin_lock_irqsave(&unit->reg_lock, flags);
+		if (unit->suspended) {
+			spin_unlock_irqrestore(&unit->reg_lock, flags);
+			schedule();
+			set_current_state(TASK_INTERRUPTIBLE);
+			if (signal_pending(current)) {
+				if (!ret) ret = -EAGAIN;
+				break;
+			}
+			continue;
+		}
+		swptr = dmabuf->swptr;
+		cnt = dmabuf->dmasize - swptr;
+		if (dmabuf->count < cnt)
+			cnt = dmabuf->count;
+		spin_unlock_irqrestore(&unit->reg_lock, flags);
+
+		if (cnt > count)
+			cnt = count;
+		if (cnt <= 0) {
+			unsigned long tmo;
+			/* buffer is empty, start the dma machine and wait for data to be
+			   recorded */
+			spin_lock_irqsave(&state->unit->reg_lock, flags);
+			if (!state->rpcm.running) {
+				ymf_capture_trigger(state->unit, &state->rpcm, 1);
+			}
+			spin_unlock_irqrestore(&state->unit->reg_lock, flags);
+			if (file->f_flags & O_NONBLOCK) {
+				if (!ret) ret = -EAGAIN;
+				break;
+			}
+			/* This isnt strictly right for the 810  but it'll do */
+			tmo = (dmabuf->dmasize * HZ) / (state->format.rate * 2);
+			tmo >>= state->format.shift;
+			/* There are two situations when sleep_on_timeout returns, one is when
+			   the interrupt is serviced correctly and the process is waked up by
+			   ISR ON TIME. Another is when timeout is expired, which means that
+			   either interrupt is NOT serviced correctly (pending interrupt) or it
+			   is TOO LATE for the process to be scheduled to run (scheduler latency)
+			   which results in a (potential) buffer overrun. And worse, there is
+			   NOTHING we can do to prevent it. */
+			tmo = schedule_timeout(tmo);
+			spin_lock_irqsave(&state->unit->reg_lock, flags);
+			set_current_state(TASK_INTERRUPTIBLE);
+			if (tmo == 0 && dmabuf->count == 0) {
+				printk(KERN_ERR "ymfpci%d: recording schedule timeout, "
+				    "dmasz %u fragsz %u count %i hwptr %u swptr %u\n",
+				    state->unit->dev_audio,
+				    dmabuf->dmasize, dmabuf->fragsize, dmabuf->count,
+				    dmabuf->hwptr, dmabuf->swptr);
+			}
+			spin_unlock_irqrestore(&state->unit->reg_lock, flags);
+			if (signal_pending(current)) {
+				if (!ret) ret = -ERESTARTSYS;
+				break;
+			}
+			continue;
+		}
+
+		if (copy_to_user(buffer, dmabuf->rawbuf + swptr, cnt)) {
+			if (!ret) ret = -EFAULT;
+			break;
+		}
+
+		swptr = (swptr + cnt) % dmabuf->dmasize;
+
+		spin_lock_irqsave(&unit->reg_lock, flags);
+		if (unit->suspended) {
+			spin_unlock_irqrestore(&unit->reg_lock, flags);
+			continue;
+		}
+
+		dmabuf->swptr = swptr;
+		dmabuf->count -= cnt;
+		// spin_unlock_irqrestore(&unit->reg_lock, flags);
+
+		count -= cnt;
+		buffer += cnt;
+		ret += cnt;
+		// spin_lock_irqsave(&unit->reg_lock, flags);
+		if (!state->rpcm.running) {
+			ymf_capture_trigger(unit, &state->rpcm, 1);
+		}
+		spin_unlock_irqrestore(&unit->reg_lock, flags);
+	}
+	set_current_state(TASK_RUNNING);
+	remove_wait_queue(&dmabuf->wait, &waita);
+
+	return ret;
+}
+
+static ssize_t
+ymf_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
+{
+	struct ymf_state *state = (struct ymf_state *)file->private_data;
+	struct ymf_dmabuf *dmabuf = &state->wpcm.dmabuf;
+	struct ymf_unit *unit = state->unit;
+	DECLARE_WAITQUEUE(waita, current);
+	ssize_t ret;
+	unsigned long flags;
+	unsigned int swptr;
+	int cnt;			/* This many to go in this revolution */
+	int redzone;
+	int delay;
+
+	YMFDBGW("ymf_write: count %d\n", count);
+
+	if (dmabuf->mapped)
+		return -ENXIO;
+	if (!dmabuf->ready && (ret = prog_dmabuf(state, 0)))
+		return ret;
+	ret = 0;
+
+	/*
+	 * Alan's cs46xx works without a red zone - marvel of ingenuity.
+	 * We are not so brilliant... Red zone does two things:
+	 *  1. allows for safe start after a pause as we have no way
+	 *     to know what the actual, relentlessly advancing, hwptr is.
+	 *  2. makes computations in ymf_pcm_interrupt simpler.
+	 */
+	redzone = ymf_calc_lend(state->format.rate) << state->format.shift;
+	redzone *= 3;	/* 2 redzone + 1 possible uncertainty reserve. */
+
+	add_wait_queue(&dmabuf->wait, &waita);
+	set_current_state(TASK_INTERRUPTIBLE);
+	while (count > 0) {
+		spin_lock_irqsave(&unit->reg_lock, flags);
+		if (unit->suspended) {
+			spin_unlock_irqrestore(&unit->reg_lock, flags);
+			schedule();
+			set_current_state(TASK_INTERRUPTIBLE);
+			if (signal_pending(current)) {
+				if (!ret) ret = -EAGAIN;
+				break;
+			}
+			continue;
+		}
+		if (dmabuf->count < 0) {
+			printk(KERN_ERR
+			   "ymf_write: count %d, was legal in cs46xx\n",
+			    dmabuf->count);
+			dmabuf->count = 0;
+		}
+		if (dmabuf->count == 0) {
+			swptr = dmabuf->hwptr;
+			if (state->wpcm.running) {
+				/*
+				 * Add uncertainty reserve.
+				 */
+				cnt = ymf_calc_lend(state->format.rate);
+				cnt <<= state->format.shift;
+				if ((swptr += cnt) >= dmabuf->dmasize) {
+					swptr -= dmabuf->dmasize;
+				}
+			}
+			dmabuf->swptr = swptr;
+		} else {
+			/*
+			 * XXX This is not right if dmabuf->count is small -
+			 * about 2*x frame size or less. We cannot count on
+			 * on appending and not causing an artefact.
+			 * Should use a variation of the count==0 case above.
+			 */
+			swptr = dmabuf->swptr;
+		}
+		cnt = dmabuf->dmasize - swptr;
+		if (dmabuf->count + cnt > dmabuf->dmasize - redzone)
+			cnt = (dmabuf->dmasize - redzone) - dmabuf->count;
+		spin_unlock_irqrestore(&unit->reg_lock, flags);
+
+		if (cnt > count)
+			cnt = count;
+		if (cnt <= 0) {
+			YMFDBGW("ymf_write: full, count %d swptr %d\n",
+			   dmabuf->count, dmabuf->swptr);
+			/*
+			 * buffer is full, start the dma machine and
+			 * wait for data to be played
+			 */
+			spin_lock_irqsave(&unit->reg_lock, flags);
+			if (!state->wpcm.running) {
+				ymf_playback_trigger(unit, &state->wpcm, 1);
+			}
+			spin_unlock_irqrestore(&unit->reg_lock, flags);
+			if (file->f_flags & O_NONBLOCK) {
+				if (!ret) ret = -EAGAIN;
+				break;
+			}
+			schedule();
+			set_current_state(TASK_INTERRUPTIBLE);
+			if (signal_pending(current)) {
+				if (!ret) ret = -ERESTARTSYS;
+				break;
+			}
+			continue;
+		}
+		if (copy_from_user(dmabuf->rawbuf + swptr, buffer, cnt)) {
+			if (!ret) ret = -EFAULT;
+			break;
+		}
+
+		if ((swptr += cnt) >= dmabuf->dmasize) {
+			swptr -= dmabuf->dmasize;
+		}
+
+		spin_lock_irqsave(&unit->reg_lock, flags);
+		if (unit->suspended) {
+			spin_unlock_irqrestore(&unit->reg_lock, flags);
+			continue;
+		}
+		dmabuf->swptr = swptr;
+		dmabuf->count += cnt;
+
+		/*
+		 * Start here is a bad idea - may cause startup click
+		 * in /bin/play when dmabuf is not full yet.
+		 * However, some broken applications do not make
+		 * any use of SNDCTL_DSP_SYNC (Doom is the worst).
+		 * One frame is about 5.3ms, Doom write size is 46ms.
+		 */
+		delay = state->format.rate / 20;	/* 50ms */
+		delay <<= state->format.shift;
+		if (dmabuf->count >= delay && !state->wpcm.running) {
+			ymf_playback_trigger(unit, &state->wpcm, 1);
+		}
+
+		spin_unlock_irqrestore(&unit->reg_lock, flags);
+
+		count -= cnt;
+		buffer += cnt;
+		ret += cnt;
+	}
+
+	set_current_state(TASK_RUNNING);
+	remove_wait_queue(&dmabuf->wait, &waita);
+
+	YMFDBGW("ymf_write: ret %d dmabuf.count %d\n", ret, dmabuf->count);
+	return ret;
+}
+
+static unsigned int ymf_poll(struct file *file, struct poll_table_struct *wait)
+{
+	struct ymf_state *state = (struct ymf_state *)file->private_data;
+	struct ymf_dmabuf *dmabuf;
+	int redzone;
+	unsigned long flags;
+	unsigned int mask = 0;
+
+	if (file->f_mode & FMODE_WRITE)
+		poll_wait(file, &state->wpcm.dmabuf.wait, wait);
+	if (file->f_mode & FMODE_READ)
+		poll_wait(file, &state->rpcm.dmabuf.wait, wait);
+
+	spin_lock_irqsave(&state->unit->reg_lock, flags);
+	if (file->f_mode & FMODE_READ) {
+		dmabuf = &state->rpcm.dmabuf;
+		if (dmabuf->count >= (signed)dmabuf->fragsize)
+			mask |= POLLIN | POLLRDNORM;
+	}
+	if (file->f_mode & FMODE_WRITE) {
+		redzone = ymf_calc_lend(state->format.rate);
+		redzone <<= state->format.shift;
+		redzone *= 3;
+
+		dmabuf = &state->wpcm.dmabuf;
+		if (dmabuf->mapped) {
+			if (dmabuf->count >= (signed)dmabuf->fragsize)
+				mask |= POLLOUT | POLLWRNORM;
+		} else {
+			/*
+			 * Don't select unless a full fragment is available.
+			 * Otherwise artsd does GETOSPACE, sees 0, and loops.
+			 */
+			if (dmabuf->count + redzone + dmabuf->fragsize
+			     <= dmabuf->dmasize)
+				mask |= POLLOUT | POLLWRNORM;
+		}
+	}
+	spin_unlock_irqrestore(&state->unit->reg_lock, flags);
+
+	return mask;
+}
+
+static int ymf_mmap(struct file *file, struct vm_area_struct *vma)
+{
+	struct ymf_state *state = (struct ymf_state *)file->private_data;
+	struct ymf_dmabuf *dmabuf = &state->wpcm.dmabuf;
+	int ret;
+	unsigned long size;
+
+	if (vma->vm_flags & VM_WRITE) {
+		if ((ret = prog_dmabuf(state, 0)) != 0)
+			return ret;
+	} else if (vma->vm_flags & VM_READ) {
+		if ((ret = prog_dmabuf(state, 1)) != 0)
+			return ret;
+	} else 
+		return -EINVAL;
+
+	if (vma->vm_pgoff != 0)
+		return -EINVAL;
+	size = vma->vm_end - vma->vm_start;
+	if (size > (PAGE_SIZE << dmabuf->buforder))
+		return -EINVAL;
+	if (remap_pfn_range(vma, vma->vm_start,
+			     virt_to_phys(dmabuf->rawbuf) >> PAGE_SHIFT,
+			     size, vma->vm_page_prot))
+		return -EAGAIN;
+	dmabuf->mapped = 1;
+
+/* P3 */ printk(KERN_INFO "ymfpci: using memory mapped sound, untested!\n");
+	return 0;
+}
+
+static int ymf_ioctl(struct inode *inode, struct file *file,
+    unsigned int cmd, unsigned long arg)
+{
+	struct ymf_state *state = (struct ymf_state *)file->private_data;
+	struct ymf_dmabuf *dmabuf;
+	unsigned long flags;
+	audio_buf_info abinfo;
+	count_info cinfo;
+	int redzone;
+	int val;
+	void __user *argp = (void __user *)arg;
+	int __user *p = argp;
+
+	switch (cmd) {
+	case OSS_GETVERSION:
+		YMFDBGX("ymf_ioctl: cmd 0x%x(GETVER) arg 0x%lx\n", cmd, arg);
+		return put_user(SOUND_VERSION, p);
+
+	case SNDCTL_DSP_RESET:
+		YMFDBGX("ymf_ioctl: cmd 0x%x(RESET)\n", cmd);
+		if (file->f_mode & FMODE_WRITE) {
+			ymf_wait_dac(state);
+			dmabuf = &state->wpcm.dmabuf;
+			spin_lock_irqsave(&state->unit->reg_lock, flags);
+			dmabuf->ready = 0;
+			dmabuf->swptr = dmabuf->hwptr;
+			dmabuf->count = dmabuf->total_bytes = 0;
+			spin_unlock_irqrestore(&state->unit->reg_lock, flags);
+		}
+		if (file->f_mode & FMODE_READ) {
+			ymf_stop_adc(state);
+			dmabuf = &state->rpcm.dmabuf;
+			spin_lock_irqsave(&state->unit->reg_lock, flags);
+			dmabuf->ready = 0;
+			dmabuf->swptr = dmabuf->hwptr;
+			dmabuf->count = dmabuf->total_bytes = 0;
+			spin_unlock_irqrestore(&state->unit->reg_lock, flags);
+		}
+		return 0;
+
+	case SNDCTL_DSP_SYNC:
+		YMFDBGX("ymf_ioctl: cmd 0x%x(SYNC)\n", cmd);
+		if (file->f_mode & FMODE_WRITE) {
+			dmabuf = &state->wpcm.dmabuf;
+			if (file->f_flags & O_NONBLOCK) {
+				spin_lock_irqsave(&state->unit->reg_lock, flags);
+				if (dmabuf->count != 0 && !state->wpcm.running) {
+					ymf_start_dac(state);
+				}
+				spin_unlock_irqrestore(&state->unit->reg_lock, flags);
+			} else {
+				ymf_wait_dac(state);
+			}
+		}
+		/* XXX What does this do for reading? dmabuf->count=0; ? */
+		return 0;
+
+	case SNDCTL_DSP_SPEED: /* set smaple rate */
+		if (get_user(val, p))
+			return -EFAULT;
+		YMFDBGX("ymf_ioctl: cmd 0x%x(SPEED) sp %d\n", cmd, val);
+		if (val >= 8000 && val <= 48000) {
+			if (file->f_mode & FMODE_WRITE) {
+				ymf_wait_dac(state);
+				dmabuf = &state->wpcm.dmabuf;
+				spin_lock_irqsave(&state->unit->reg_lock, flags);
+				dmabuf->ready = 0;
+				state->format.rate = val;
+				ymf_pcm_update_shift(&state->format);
+				spin_unlock_irqrestore(&state->unit->reg_lock, flags);
+			}
+			if (file->f_mode & FMODE_READ) {
+				ymf_stop_adc(state);
+				dmabuf = &state->rpcm.dmabuf;
+				spin_lock_irqsave(&state->unit->reg_lock, flags);
+				dmabuf->ready = 0;
+				state->format.rate = val;
+				ymf_pcm_update_shift(&state->format);
+				spin_unlock_irqrestore(&state->unit->reg_lock, flags);
+			}
+		}
+		return put_user(state->format.rate, p);
+
+	/*
+	 * OSS manual does not mention SNDCTL_DSP_STEREO at all.
+	 * All channels are mono and if you want stereo, you
+	 * play into two channels with SNDCTL_DSP_CHANNELS.
+	 * However, mpg123 calls it. I wonder, why Michael Hipp used it.
+	 */
+	case SNDCTL_DSP_STEREO: /* set stereo or mono channel */
+		if (get_user(val, p))
+			return -EFAULT;
+		YMFDBGX("ymf_ioctl: cmd 0x%x(STEREO) st %d\n", cmd, val);
+		if (file->f_mode & FMODE_WRITE) {
+			ymf_wait_dac(state); 
+			dmabuf = &state->wpcm.dmabuf;
+			spin_lock_irqsave(&state->unit->reg_lock, flags);
+			dmabuf->ready = 0;
+			state->format.voices = val ? 2 : 1;
+			ymf_pcm_update_shift(&state->format);
+			spin_unlock_irqrestore(&state->unit->reg_lock, flags);
+		}
+		if (file->f_mode & FMODE_READ) {
+			ymf_stop_adc(state);
+			dmabuf = &state->rpcm.dmabuf;
+			spin_lock_irqsave(&state->unit->reg_lock, flags);
+			dmabuf->ready = 0;
+			state->format.voices = val ? 2 : 1;
+			ymf_pcm_update_shift(&state->format);
+			spin_unlock_irqrestore(&state->unit->reg_lock, flags);
+		}
+		return 0;
+
+	case SNDCTL_DSP_GETBLKSIZE:
+		YMFDBGX("ymf_ioctl: cmd 0x%x(GETBLK)\n", cmd);
+		if (file->f_mode & FMODE_WRITE) {
+			if ((val = prog_dmabuf(state, 0)))
+				return val;
+			val = state->wpcm.dmabuf.fragsize;
+			YMFDBGX("ymf_ioctl: GETBLK w %d\n", val);
+			return put_user(val, p);
+		}
+		if (file->f_mode & FMODE_READ) {
+			if ((val = prog_dmabuf(state, 1)))
+				return val;
+			val = state->rpcm.dmabuf.fragsize;
+			YMFDBGX("ymf_ioctl: GETBLK r %d\n", val);
+			return put_user(val, p);
+		}
+		return -EINVAL;
+
+	case SNDCTL_DSP_GETFMTS: /* Returns a mask of supported sample format*/
+		YMFDBGX("ymf_ioctl: cmd 0x%x(GETFMTS)\n", cmd);
+		return put_user(AFMT_S16_LE|AFMT_U8, p);
+
+	case SNDCTL_DSP_SETFMT: /* Select sample format */
+		if (get_user(val, p))
+			return -EFAULT;
+		YMFDBGX("ymf_ioctl: cmd 0x%x(SETFMT) fmt %d\n", cmd, val);
+		if (val == AFMT_S16_LE || val == AFMT_U8) {
+			if (file->f_mode & FMODE_WRITE) {
+				ymf_wait_dac(state);
+				dmabuf = &state->wpcm.dmabuf;
+				spin_lock_irqsave(&state->unit->reg_lock, flags);
+				dmabuf->ready = 0;
+				state->format.format = val;
+				ymf_pcm_update_shift(&state->format);
+				spin_unlock_irqrestore(&state->unit->reg_lock, flags);
+			}
+			if (file->f_mode & FMODE_READ) {
+				ymf_stop_adc(state);
+				dmabuf = &state->rpcm.dmabuf;
+				spin_lock_irqsave(&state->unit->reg_lock, flags);
+				dmabuf->ready = 0;
+				state->format.format = val;
+				ymf_pcm_update_shift(&state->format);
+				spin_unlock_irqrestore(&state->unit->reg_lock, flags);
+			}
+		}
+		return put_user(state->format.format, p);
+
+	case SNDCTL_DSP_CHANNELS:
+		if (get_user(val, p))
+			return -EFAULT;
+		YMFDBGX("ymf_ioctl: cmd 0x%x(CHAN) ch %d\n", cmd, val);
+		if (val != 0) {
+			if (file->f_mode & FMODE_WRITE) {
+				ymf_wait_dac(state);
+				if (val == 1 || val == 2) {
+					spin_lock_irqsave(&state->unit->reg_lock, flags);
+					dmabuf = &state->wpcm.dmabuf;
+					dmabuf->ready = 0;
+					state->format.voices = val;
+					ymf_pcm_update_shift(&state->format);
+					spin_unlock_irqrestore(&state->unit->reg_lock, flags);
+				}
+			}
+			if (file->f_mode & FMODE_READ) {
+				ymf_stop_adc(state);
+				if (val == 1 || val == 2) {
+					spin_lock_irqsave(&state->unit->reg_lock, flags);
+					dmabuf = &state->rpcm.dmabuf;
+					dmabuf->ready = 0;
+					state->format.voices = val;
+					ymf_pcm_update_shift(&state->format);
+					spin_unlock_irqrestore(&state->unit->reg_lock, flags);
+				}
+			}
+		}
+		return put_user(state->format.voices, p);
+
+	case SNDCTL_DSP_POST:
+		YMFDBGX("ymf_ioctl: cmd 0x%x(POST)\n", cmd);
+		/*
+		 * Quoting OSS PG:
+		 *    The ioctl SNDCTL_DSP_POST is a lightweight version of
+		 *    SNDCTL_DSP_SYNC. It just tells to the driver that there
+		 *    is likely to be a pause in the output. This makes it
+		 *    possible for the device to handle the pause more
+		 *    intelligently. This ioctl doesn't block the application.
+		 *
+		 * The paragraph above is a clumsy way to say "flush ioctl".
+		 * This ioctl is used by mpg123.
+		 */
+		spin_lock_irqsave(&state->unit->reg_lock, flags);
+		if (state->wpcm.dmabuf.count != 0 && !state->wpcm.running) {
+			ymf_start_dac(state);
+		}
+		spin_unlock_irqrestore(&state->unit->reg_lock, flags);
+		return 0;
+
+	case SNDCTL_DSP_SETFRAGMENT:
+		if (get_user(val, p))
+			return -EFAULT;
+		YMFDBGX("ymf_ioctl: cmd 0x%x(SETFRAG) fr 0x%04x:%04x(%d:%d)\n",
+		    cmd,
+		    (val >> 16) & 0xFFFF, val & 0xFFFF,
+		    (val >> 16) & 0xFFFF, val & 0xFFFF);
+		dmabuf = &state->wpcm.dmabuf;
+		dmabuf->ossfragshift = val & 0xffff;
+		dmabuf->ossmaxfrags = (val >> 16) & 0xffff;
+		if (dmabuf->ossfragshift < 4)
+			dmabuf->ossfragshift = 4;
+		if (dmabuf->ossfragshift > 15)
+			dmabuf->ossfragshift = 15;
+		return 0;
+
+	case SNDCTL_DSP_GETOSPACE:
+		YMFDBGX("ymf_ioctl: cmd 0x%x(GETOSPACE)\n", cmd);
+		if (!(file->f_mode & FMODE_WRITE))
+			return -EINVAL;
+		dmabuf = &state->wpcm.dmabuf;
+		if (!dmabuf->ready && (val = prog_dmabuf(state, 0)) != 0)
+			return val;
+		redzone = ymf_calc_lend(state->format.rate);
+		redzone <<= state->format.shift;
+		redzone *= 3;
+		spin_lock_irqsave(&state->unit->reg_lock, flags);
+		abinfo.fragsize = dmabuf->fragsize;
+		abinfo.bytes = dmabuf->dmasize - dmabuf->count - redzone;
+		abinfo.fragstotal = dmabuf->numfrag;
+		abinfo.fragments = abinfo.bytes >> dmabuf->fragshift;
+		spin_unlock_irqrestore(&state->unit->reg_lock, flags);
+		return copy_to_user(argp, &abinfo, sizeof(abinfo)) ? -EFAULT : 0;
+
+	case SNDCTL_DSP_GETISPACE:
+		YMFDBGX("ymf_ioctl: cmd 0x%x(GETISPACE)\n", cmd);
+		if (!(file->f_mode & FMODE_READ))
+			return -EINVAL;
+		dmabuf = &state->rpcm.dmabuf;
+		if (!dmabuf->ready && (val = prog_dmabuf(state, 1)) != 0)
+			return val;
+		spin_lock_irqsave(&state->unit->reg_lock, flags);
+		abinfo.fragsize = dmabuf->fragsize;
+		abinfo.bytes = dmabuf->count;
+		abinfo.fragstotal = dmabuf->numfrag;
+		abinfo.fragments = abinfo.bytes >> dmabuf->fragshift;
+		spin_unlock_irqrestore(&state->unit->reg_lock, flags);
+		return copy_to_user(argp, &abinfo, sizeof(abinfo)) ? -EFAULT : 0;
+
+	case SNDCTL_DSP_NONBLOCK:
+		YMFDBGX("ymf_ioctl: cmd 0x%x(NONBLOCK)\n", cmd);
+		file->f_flags |= O_NONBLOCK;
+		return 0;
+
+	case SNDCTL_DSP_GETCAPS:
+		YMFDBGX("ymf_ioctl: cmd 0x%x(GETCAPS)\n", cmd);
+		/* return put_user(DSP_CAP_REALTIME|DSP_CAP_TRIGGER|DSP_CAP_MMAP,
+			    p); */
+		return put_user(0, p);
+
+	case SNDCTL_DSP_GETIPTR:
+		YMFDBGX("ymf_ioctl: cmd 0x%x(GETIPTR)\n", cmd);
+		if (!(file->f_mode & FMODE_READ))
+			return -EINVAL;
+		dmabuf = &state->rpcm.dmabuf;
+		spin_lock_irqsave(&state->unit->reg_lock, flags);
+		cinfo.bytes = dmabuf->total_bytes;
+		cinfo.blocks = dmabuf->count >> dmabuf->fragshift;
+		cinfo.ptr = dmabuf->hwptr;
+		spin_unlock_irqrestore(&state->unit->reg_lock, flags);
+		YMFDBGX("ymf_ioctl: GETIPTR ptr %d bytes %d\n",
+		    cinfo.ptr, cinfo.bytes);
+		return copy_to_user(argp, &cinfo, sizeof(cinfo)) ? -EFAULT : 0;
+
+	case SNDCTL_DSP_GETOPTR:
+		YMFDBGX("ymf_ioctl: cmd 0x%x(GETOPTR)\n", cmd);
+		if (!(file->f_mode & FMODE_WRITE))
+			return -EINVAL;
+		dmabuf = &state->wpcm.dmabuf;
+		spin_lock_irqsave(&state->unit->reg_lock, flags);
+		cinfo.bytes = dmabuf->total_bytes;
+		cinfo.blocks = dmabuf->count >> dmabuf->fragshift;
+		cinfo.ptr = dmabuf->hwptr;
+		spin_unlock_irqrestore(&state->unit->reg_lock, flags);
+		YMFDBGX("ymf_ioctl: GETOPTR ptr %d bytes %d\n",
+		    cinfo.ptr, cinfo.bytes);
+		return copy_to_user(argp, &cinfo, sizeof(cinfo)) ? -EFAULT : 0;
+
+	case SNDCTL_DSP_SETDUPLEX:
+		YMFDBGX("ymf_ioctl: cmd 0x%x(SETDUPLEX)\n", cmd);
+		return 0;		/* Always duplex */
+
+	case SOUND_PCM_READ_RATE:
+		YMFDBGX("ymf_ioctl: cmd 0x%x(READ_RATE)\n", cmd);
+		return put_user(state->format.rate, p);
+
+	case SOUND_PCM_READ_CHANNELS:
+		YMFDBGX("ymf_ioctl: cmd 0x%x(READ_CH)\n", cmd);
+		return put_user(state->format.voices, p);
+
+	case SOUND_PCM_READ_BITS:
+		YMFDBGX("ymf_ioctl: cmd 0x%x(READ_BITS)\n", cmd);
+		return put_user(AFMT_S16_LE, p);
+
+	case SNDCTL_DSP_MAPINBUF:
+	case SNDCTL_DSP_MAPOUTBUF:
+	case SNDCTL_DSP_SETSYNCRO:
+	case SOUND_PCM_WRITE_FILTER:
+	case SOUND_PCM_READ_FILTER:
+		YMFDBGX("ymf_ioctl: cmd 0x%x unsupported\n", cmd);
+		return -ENOTTY;
+
+	default:
+		/*
+		 * Some programs mix up audio devices and ioctls
+		 * or perhaps they expect "universal" ioctls,
+		 * for instance we get SNDCTL_TMR_CONTINUE here.
+		 * (mpg123 -g 100 ends here too - to be fixed.)
+		 */
+		YMFDBGX("ymf_ioctl: cmd 0x%x unknown\n", cmd);
+		break;
+	}
+	return -ENOTTY;
+}
+
+/*
+ * open(2)
+ * We use upper part of the minor to distinguish between soundcards.
+ * Channels are opened with a clone open.
+ */
+static int ymf_open(struct inode *inode, struct file *file)
+{
+	struct list_head *list;
+	ymfpci_t *unit = NULL;
+	int minor;
+	struct ymf_state *state;
+	int err;
+
+	minor = iminor(inode);
+	if ((minor & 0x0F) == 3) {	/* /dev/dspN */
+		;
+	} else {
+		return -ENXIO;
+	}
+
+	unit = NULL;	/* gcc warns */
+	spin_lock(&ymf_devs_lock);
+	list_for_each(list, &ymf_devs) {
+		unit = list_entry(list, ymfpci_t, ymf_devs);
+		if (((unit->dev_audio ^ minor) & ~0x0F) == 0)
+			break;
+	}
+	spin_unlock(&ymf_devs_lock);
+	if (unit == NULL)
+		return -ENODEV;
+
+	down(&unit->open_sem);
+
+	if ((state = ymf_state_alloc(unit)) == NULL) {
+		up(&unit->open_sem);
+		return -ENOMEM;
+	}
+	list_add_tail(&state->chain, &unit->states);
+
+	file->private_data = state;
+
+	/*
+	 * ymf_read and ymf_write that we borrowed from cs46xx
+	 * allocate buffers with prog_dmabuf(). We call prog_dmabuf
+	 * here so that in case of DMA memory exhaustion open
+	 * fails rather than write.
+	 *
+	 * XXX prog_dmabuf allocates voice. Should allocate explicitly, above.
+	 */
+	if (file->f_mode & FMODE_WRITE) {
+		if (!state->wpcm.dmabuf.ready) {
+			if ((err = prog_dmabuf(state, 0)) != 0) {
+				goto out_nodma;
+			}
+		}
+	}
+	if (file->f_mode & FMODE_READ) {
+		if (!state->rpcm.dmabuf.ready) {
+			if ((err = prog_dmabuf(state, 1)) != 0) {
+				goto out_nodma;
+			}
+		}
+	}
+
+#if 0 /* test if interrupts work */
+	ymfpci_writew(unit, YDSXGR_TIMERCOUNT, 0xfffe);	/* ~ 680ms */
+	ymfpci_writeb(unit, YDSXGR_TIMERCTRL,
+	    (YDSXGR_TIMERCTRL_TEN|YDSXGR_TIMERCTRL_TIEN));
+#endif
+	up(&unit->open_sem);
+
+	return nonseekable_open(inode, file);
+
+out_nodma:
+	/*
+	 * XXX Broken custom: "goto out_xxx" in other place is
+	 * a nestable exception, but here it is not nestable due to semaphore.
+	 * XXX Doubtful technique of self-describing objects....
+	 */
+	dealloc_dmabuf(unit, &state->wpcm.dmabuf);
+	dealloc_dmabuf(unit, &state->rpcm.dmabuf);
+	ymf_pcm_free_substream(&state->wpcm);
+	ymf_pcm_free_substream(&state->rpcm);
+
+	list_del(&state->chain);
+	kfree(state);
+
+	up(&unit->open_sem);
+	return err;
+}
+
+static int ymf_release(struct inode *inode, struct file *file)
+{
+	struct ymf_state *state = (struct ymf_state *)file->private_data;
+	ymfpci_t *unit = state->unit;
+
+#if 0 /* test if interrupts work */
+	ymfpci_writeb(unit, YDSXGR_TIMERCTRL, 0);
+#endif
+
+	down(&unit->open_sem);
+
+	/*
+	 * XXX Solve the case of O_NONBLOCK close - don't deallocate here.
+	 * Deallocate when unloading the driver and we can wait.
+	 */
+	ymf_wait_dac(state);
+	ymf_stop_adc(state);		/* fortunately, it's immediate */
+	dealloc_dmabuf(unit, &state->wpcm.dmabuf);
+	dealloc_dmabuf(unit, &state->rpcm.dmabuf);
+	ymf_pcm_free_substream(&state->wpcm);
+	ymf_pcm_free_substream(&state->rpcm);
+
+	list_del(&state->chain);
+	file->private_data = NULL;	/* Can you tell I programmed Solaris */
+	kfree(state);
+
+	up(&unit->open_sem);
+
+	return 0;
+}
+
+/*
+ * Mixer operations are based on cs46xx.
+ */
+static int ymf_open_mixdev(struct inode *inode, struct file *file)
+{
+	int minor = iminor(inode);
+	struct list_head *list;
+	ymfpci_t *unit;
+	int i;
+
+	spin_lock(&ymf_devs_lock);
+	list_for_each(list, &ymf_devs) {
+		unit = list_entry(list, ymfpci_t, ymf_devs);
+		for (i = 0; i < NR_AC97; i++) {
+			if (unit->ac97_codec[i] != NULL &&
+			    unit->ac97_codec[i]->dev_mixer == minor) {
+				spin_unlock(&ymf_devs_lock);
+				goto match;
+			}
+		}
+	}
+	spin_unlock(&ymf_devs_lock);
+	return -ENODEV;
+
+ match:
+	file->private_data = unit->ac97_codec[i];
+
+	return nonseekable_open(inode, file);
+}
+
+static int ymf_ioctl_mixdev(struct inode *inode, struct file *file,
+    unsigned int cmd, unsigned long arg)
+{
+	struct ac97_codec *codec = (struct ac97_codec *)file->private_data;
+
+	return codec->mixer_ioctl(codec, cmd, arg);
+}
+
+static int ymf_release_mixdev(struct inode *inode, struct file *file)
+{
+	return 0;
+}
+
+static /*const*/ struct file_operations ymf_fops = {
+	.owner		= THIS_MODULE,
+	.llseek		= no_llseek,
+	.read		= ymf_read,
+	.write		= ymf_write,
+	.poll		= ymf_poll,
+	.ioctl		= ymf_ioctl,
+	.mmap		= ymf_mmap,
+	.open		= ymf_open,
+	.release	= ymf_release,
+};
+
+static /*const*/ struct file_operations ymf_mixer_fops = {
+	.owner		= THIS_MODULE,
+	.llseek		= no_llseek,
+	.ioctl		= ymf_ioctl_mixdev,
+	.open		= ymf_open_mixdev,
+	.release	= ymf_release_mixdev,
+};
+
+/*
+ */
+
+static int ymf_suspend(struct pci_dev *pcidev, pm_message_t unused)
+{
+	struct ymf_unit *unit = pci_get_drvdata(pcidev);
+	unsigned long flags;
+	struct ymf_dmabuf *dmabuf;
+	struct list_head *p;
+	struct ymf_state *state;
+	struct ac97_codec *codec;
+	int i;
+
+	spin_lock_irqsave(&unit->reg_lock, flags);
+
+	unit->suspended = 1;
+
+	for (i = 0; i < NR_AC97; i++) {
+		if ((codec = unit->ac97_codec[i]) != NULL)
+			ac97_save_state(codec);
+	}
+
+	list_for_each(p, &unit->states) {
+		state = list_entry(p, struct ymf_state, chain);
+
+		dmabuf = &state->wpcm.dmabuf;
+		dmabuf->hwptr = dmabuf->swptr = 0;
+		dmabuf->total_bytes = 0;
+		dmabuf->count = 0;
+
+		dmabuf = &state->rpcm.dmabuf;
+		dmabuf->hwptr = dmabuf->swptr = 0;
+		dmabuf->total_bytes = 0;
+		dmabuf->count = 0;
+	}
+
+	ymfpci_writel(unit, YDSXGR_NATIVEDACOUTVOL, 0);
+	ymfpci_disable_dsp(unit);
+
+	spin_unlock_irqrestore(&unit->reg_lock, flags);
+	
+	return 0;
+}
+
+static int ymf_resume(struct pci_dev *pcidev)
+{
+	struct ymf_unit *unit = pci_get_drvdata(pcidev);
+	unsigned long flags;
+	struct list_head *p;
+	struct ymf_state *state;
+	struct ac97_codec *codec;
+	int i;
+
+	ymfpci_aclink_reset(unit->pci);
+	ymfpci_codec_ready(unit, 0, 1);		/* prints diag if not ready. */
+
+#ifdef CONFIG_SOUND_YMFPCI_LEGACY
+	/* XXX At this time the legacy registers are probably deprogrammed. */
+#endif
+
+	ymfpci_download_image(unit);
+
+	ymf_memload(unit);
+
+	spin_lock_irqsave(&unit->reg_lock, flags);
+
+	if (unit->start_count) {
+		ymfpci_writel(unit, YDSXGR_MODE, 3);
+		unit->active_bank = ymfpci_readl(unit, YDSXGR_CTRLSELECT) & 1;
+	}
+
+	for (i = 0; i < NR_AC97; i++) {
+		if ((codec = unit->ac97_codec[i]) != NULL)
+			ac97_restore_state(codec);
+	}
+
+	unit->suspended = 0;
+	list_for_each(p, &unit->states) {
+		state = list_entry(p, struct ymf_state, chain);
+		wake_up(&state->wpcm.dmabuf.wait);
+		wake_up(&state->rpcm.dmabuf.wait);
+	}
+
+	spin_unlock_irqrestore(&unit->reg_lock, flags);
+	return 0;
+}
+
+/*
+ *  initialization routines
+ */
+
+#ifdef CONFIG_SOUND_YMFPCI_LEGACY
+
+static int ymfpci_setup_legacy(ymfpci_t *unit, struct pci_dev *pcidev)
+{
+	int v;
+	int mpuio = -1, oplio = -1;
+
+	switch (unit->iomidi) {
+	case 0x330:
+		mpuio = 0;
+		break;
+	case 0x300:
+		mpuio = 1;
+		break;
+	case 0x332:
+		mpuio = 2;
+		break;
+	case 0x334:
+		mpuio = 3;
+		break;
+	default: ;
+	}
+
+	switch (unit->iosynth) {
+	case 0x388:
+		oplio = 0;
+		break;
+	case 0x398:
+		oplio = 1;
+		break;
+	case 0x3a0:
+		oplio = 2;
+		break;
+	case 0x3a8:
+		oplio = 3;
+		break;
+	default: ;
+	}
+
+	if (mpuio >= 0 || oplio >= 0) {
+		/* 0x0020: 1 - 10 bits of I/O address decoded, 0 - 16 bits. */
+		v = 0x001e;
+		pci_write_config_word(pcidev, PCIR_LEGCTRL, v);
+
+		switch (pcidev->device) {
+		case PCI_DEVICE_ID_YAMAHA_724:
+		case PCI_DEVICE_ID_YAMAHA_740:
+		case PCI_DEVICE_ID_YAMAHA_724F:
+		case PCI_DEVICE_ID_YAMAHA_740C:
+			v = 0x8800;
+			if (mpuio >= 0) { v |= mpuio<<4; }
+			if (oplio >= 0) { v |= oplio; }
+			pci_write_config_word(pcidev, PCIR_ELEGCTRL, v);
+			break;
+
+		case PCI_DEVICE_ID_YAMAHA_744:
+		case PCI_DEVICE_ID_YAMAHA_754:
+			v = 0x8800;
+			pci_write_config_word(pcidev, PCIR_ELEGCTRL, v);
+			if (oplio >= 0) {
+				pci_write_config_word(pcidev, PCIR_OPLADR, unit->iosynth);
+			}
+			if (mpuio >= 0) {
+				pci_write_config_word(pcidev, PCIR_MPUADR, unit->iomidi);
+			}
+			break;
+
+		default:
+			printk(KERN_ERR "ymfpci: Unknown device ID: 0x%x\n",
+			    pcidev->device);
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}
+#endif /* CONFIG_SOUND_YMFPCI_LEGACY */
+
+static void ymfpci_aclink_reset(struct pci_dev * pci)
+{
+	u8 cmd;
+
+	/*
+	 * In the 744, 754 only 0x01 exists, 0x02 is undefined.
+	 * It does not seem to hurt to trip both regardless of revision.
+	 */
+	pci_read_config_byte(pci, PCIR_DSXGCTRL, &cmd);
+	pci_write_config_byte(pci, PCIR_DSXGCTRL, cmd & 0xfc);
+	pci_write_config_byte(pci, PCIR_DSXGCTRL, cmd | 0x03);
+	pci_write_config_byte(pci, PCIR_DSXGCTRL, cmd & 0xfc);
+
+	pci_write_config_word(pci, PCIR_DSXPWRCTRL1, 0);
+	pci_write_config_word(pci, PCIR_DSXPWRCTRL2, 0);
+}
+
+static void ymfpci_enable_dsp(ymfpci_t *codec)
+{
+	ymfpci_writel(codec, YDSXGR_CONFIG, 0x00000001);
+}
+
+static void ymfpci_disable_dsp(ymfpci_t *codec)
+{
+	u32 val;
+	int timeout = 1000;
+
+	val = ymfpci_readl(codec, YDSXGR_CONFIG);
+	if (val)
+		ymfpci_writel(codec, YDSXGR_CONFIG, 0x00000000);
+	while (timeout-- > 0) {
+		val = ymfpci_readl(codec, YDSXGR_STATUS);
+		if ((val & 0x00000002) == 0)
+			break;
+	}
+}
+
+#include "ymfpci_image.h"
+
+static void ymfpci_download_image(ymfpci_t *codec)
+{
+	int i, ver_1e;
+	u16 ctrl;
+
+	ymfpci_writel(codec, YDSXGR_NATIVEDACOUTVOL, 0x00000000);
+	ymfpci_disable_dsp(codec);
+	ymfpci_writel(codec, YDSXGR_MODE, 0x00010000);
+	ymfpci_writel(codec, YDSXGR_MODE, 0x00000000);
+	ymfpci_writel(codec, YDSXGR_MAPOFREC, 0x00000000);
+	ymfpci_writel(codec, YDSXGR_MAPOFEFFECT, 0x00000000);
+	ymfpci_writel(codec, YDSXGR_PLAYCTRLBASE, 0x00000000);
+	ymfpci_writel(codec, YDSXGR_RECCTRLBASE, 0x00000000);
+	ymfpci_writel(codec, YDSXGR_EFFCTRLBASE, 0x00000000);
+	ctrl = ymfpci_readw(codec, YDSXGR_GLOBALCTRL);
+	ymfpci_writew(codec, YDSXGR_GLOBALCTRL, ctrl & ~0x0007);
+
+	/* setup DSP instruction code */
+	for (i = 0; i < YDSXG_DSPLENGTH / 4; i++)
+		ymfpci_writel(codec, YDSXGR_DSPINSTRAM + (i << 2), DspInst[i]);
+
+	switch (codec->pci->device) {
+	case PCI_DEVICE_ID_YAMAHA_724F:
+	case PCI_DEVICE_ID_YAMAHA_740C:
+	case PCI_DEVICE_ID_YAMAHA_744:
+	case PCI_DEVICE_ID_YAMAHA_754:
+		ver_1e = 1;
+		break;
+	default:
+		ver_1e = 0;
+	}
+
+	if (ver_1e) {
+		/* setup control instruction code */
+		for (i = 0; i < YDSXG_CTRLLENGTH / 4; i++)
+			ymfpci_writel(codec, YDSXGR_CTRLINSTRAM + (i << 2), CntrlInst1E[i]);
+	} else {
+		for (i = 0; i < YDSXG_CTRLLENGTH / 4; i++)
+			ymfpci_writel(codec, YDSXGR_CTRLINSTRAM + (i << 2), CntrlInst[i]);
+	}
+
+	ymfpci_enable_dsp(codec);
+
+	/* 0.02s sounds not too bad, we may do schedule_timeout() later. */
+	mdelay(20); /* seems we need some delay after downloading image.. */
+}
+
+static int ymfpci_memalloc(ymfpci_t *codec)
+{
+	unsigned int playback_ctrl_size;
+	unsigned int bank_size_playback;
+	unsigned int bank_size_capture;
+	unsigned int bank_size_effect;
+	unsigned int size;
+	unsigned int off;
+	char *ptr;
+	dma_addr_t pba;
+	int voice, bank;
+
+	playback_ctrl_size = 4 + 4 * YDSXG_PLAYBACK_VOICES;
+	bank_size_playback = ymfpci_readl(codec, YDSXGR_PLAYCTRLSIZE) << 2;
+	bank_size_capture = ymfpci_readl(codec, YDSXGR_RECCTRLSIZE) << 2;
+	bank_size_effect = ymfpci_readl(codec, YDSXGR_EFFCTRLSIZE) << 2;
+	codec->work_size = YDSXG_DEFAULT_WORK_SIZE;
+
+	size = ((playback_ctrl_size + 0x00ff) & ~0x00ff) +
+	    ((bank_size_playback * 2 * YDSXG_PLAYBACK_VOICES + 0xff) & ~0xff) +
+	    ((bank_size_capture * 2 * YDSXG_CAPTURE_VOICES + 0xff) & ~0xff) +
+	    ((bank_size_effect * 2 * YDSXG_EFFECT_VOICES + 0xff) & ~0xff) +
+	    codec->work_size;
+
+	ptr = pci_alloc_consistent(codec->pci, size + 0xff, &pba);
+	if (ptr == NULL)
+		return -ENOMEM;
+	codec->dma_area_va = ptr;
+	codec->dma_area_ba = pba;
+	codec->dma_area_size = size + 0xff;
+
+	off = (unsigned long)ptr & 0xff;
+	if (off) {
+		ptr += 0x100 - off;
+		pba += 0x100 - off;
+	}
+
+	/*
+	 * Hardware requires only ptr[playback_ctrl_size] zeroed,
+	 * but in our judgement it is a wrong kind of savings, so clear it all.
+	 */
+	memset(ptr, 0, size);
+
+	codec->ctrl_playback = (u32 *)ptr;
+	codec->ctrl_playback_ba = pba;
+	codec->ctrl_playback[0] = cpu_to_le32(YDSXG_PLAYBACK_VOICES);
+	ptr += (playback_ctrl_size + 0x00ff) & ~0x00ff;
+	pba += (playback_ctrl_size + 0x00ff) & ~0x00ff;
+
+	off = 0;
+	for (voice = 0; voice < YDSXG_PLAYBACK_VOICES; voice++) {
+		codec->voices[voice].number = voice;
+		codec->voices[voice].bank =
+		    (ymfpci_playback_bank_t *) (ptr + off);
+		codec->voices[voice].bank_ba = pba + off;
+		off += 2 * bank_size_playback;		/* 2 banks */
+	}
+	off = (off + 0xff) & ~0xff;
+	ptr += off;
+	pba += off;
+
+	off = 0;
+	codec->bank_base_capture = pba;
+	for (voice = 0; voice < YDSXG_CAPTURE_VOICES; voice++)
+		for (bank = 0; bank < 2; bank++) {
+			codec->bank_capture[voice][bank] =
+			    (ymfpci_capture_bank_t *) (ptr + off);
+			off += bank_size_capture;
+		}
+	off = (off + 0xff) & ~0xff;
+	ptr += off;
+	pba += off;
+
+	off = 0;
+	codec->bank_base_effect = pba;
+	for (voice = 0; voice < YDSXG_EFFECT_VOICES; voice++)
+		for (bank = 0; bank < 2; bank++) {
+			codec->bank_effect[voice][bank] =
+			    (ymfpci_effect_bank_t *) (ptr + off);
+			off += bank_size_effect;
+		}
+	off = (off + 0xff) & ~0xff;
+	ptr += off;
+	pba += off;
+
+	codec->work_base = pba;
+
+	return 0;
+}
+
+static void ymfpci_memfree(ymfpci_t *codec)
+{
+	ymfpci_writel(codec, YDSXGR_PLAYCTRLBASE, 0);
+	ymfpci_writel(codec, YDSXGR_RECCTRLBASE, 0);
+	ymfpci_writel(codec, YDSXGR_EFFCTRLBASE, 0);
+	ymfpci_writel(codec, YDSXGR_WORKBASE, 0);
+	ymfpci_writel(codec, YDSXGR_WORKSIZE, 0);
+	pci_free_consistent(codec->pci,
+	    codec->dma_area_size, codec->dma_area_va, codec->dma_area_ba);
+}
+
+static void ymf_memload(ymfpci_t *unit)
+{
+
+	ymfpci_writel(unit, YDSXGR_PLAYCTRLBASE, unit->ctrl_playback_ba);
+	ymfpci_writel(unit, YDSXGR_RECCTRLBASE, unit->bank_base_capture);
+	ymfpci_writel(unit, YDSXGR_EFFCTRLBASE, unit->bank_base_effect);
+	ymfpci_writel(unit, YDSXGR_WORKBASE, unit->work_base);
+	ymfpci_writel(unit, YDSXGR_WORKSIZE, unit->work_size >> 2);
+
+	/* S/PDIF output initialization */
+	ymfpci_writew(unit, YDSXGR_SPDIFOUTCTRL, 0);
+	ymfpci_writew(unit, YDSXGR_SPDIFOUTSTATUS,
+		SND_PCM_AES0_CON_EMPHASIS_NONE |
+		(SND_PCM_AES1_CON_ORIGINAL << 8) |
+		(SND_PCM_AES1_CON_PCM_CODER << 8));
+
+	/* S/PDIF input initialization */
+	ymfpci_writew(unit, YDSXGR_SPDIFINCTRL, 0);
+
+	/* move this volume setup to mixer */
+	ymfpci_writel(unit, YDSXGR_NATIVEDACOUTVOL, 0x3fff3fff);
+	ymfpci_writel(unit, YDSXGR_BUF441OUTVOL, 0);
+	ymfpci_writel(unit, YDSXGR_NATIVEADCINVOL, 0x3fff3fff);
+	ymfpci_writel(unit, YDSXGR_NATIVEDACINVOL, 0x3fff3fff);
+}
+
+static int ymf_ac97_init(ymfpci_t *unit, int num_ac97)
+{
+	struct ac97_codec *codec;
+	u16 eid;
+
+	if ((codec = ac97_alloc_codec()) == NULL)
+		return -ENOMEM;
+
+	/* initialize some basic codec information, other fields will be filled
+	   in ac97_probe_codec */
+	codec->private_data = unit;
+	codec->id = num_ac97;
+
+	codec->codec_read = ymfpci_codec_read;
+	codec->codec_write = ymfpci_codec_write;
+
+	if (ac97_probe_codec(codec) == 0) {
+		printk(KERN_ERR "ymfpci: ac97_probe_codec failed\n");
+		goto out_kfree;
+	}
+
+	eid = ymfpci_codec_read(codec, AC97_EXTENDED_ID);
+	if (eid==0xFFFF) {
+		printk(KERN_WARNING "ymfpci: no codec attached ?\n");
+		goto out_kfree;
+	}
+
+	unit->ac97_features = eid;
+
+	if ((codec->dev_mixer = register_sound_mixer(&ymf_mixer_fops, -1)) < 0) {
+		printk(KERN_ERR "ymfpci: couldn't register mixer!\n");
+		goto out_kfree;
+	}
+
+	unit->ac97_codec[num_ac97] = codec;
+
+	return 0;
+ out_kfree:
+	ac97_release_codec(codec);
+	return -ENODEV;
+}
+
+#ifdef CONFIG_SOUND_YMFPCI_LEGACY
+# ifdef MODULE
+static int mpu_io;
+static int synth_io;
+module_param(mpu_io, int, 0);
+module_param(synth_io, int, 0);
+# else
+static int mpu_io     = 0x330;
+static int synth_io   = 0x388;
+# endif
+static int assigned;
+#endif /* CONFIG_SOUND_YMFPCI_LEGACY */
+
+static int __devinit ymf_probe_one(struct pci_dev *pcidev, const struct pci_device_id *ent)
+{
+	u16 ctrl;
+	unsigned long base;
+	ymfpci_t *codec;
+
+	int err;
+
+	if ((err = pci_enable_device(pcidev)) != 0) {
+		printk(KERN_ERR "ymfpci: pci_enable_device failed\n");
+		return err;
+	}
+	base = pci_resource_start(pcidev, 0);
+
+	if ((codec = kmalloc(sizeof(ymfpci_t), GFP_KERNEL)) == NULL) {
+		printk(KERN_ERR "ymfpci: no core\n");
+		return -ENOMEM;
+	}
+	memset(codec, 0, sizeof(*codec));
+
+	spin_lock_init(&codec->reg_lock);
+	spin_lock_init(&codec->voice_lock);
+	spin_lock_init(&codec->ac97_lock);
+	init_MUTEX(&codec->open_sem);
+	INIT_LIST_HEAD(&codec->states);
+	codec->pci = pcidev;
+
+	pci_read_config_byte(pcidev, PCI_REVISION_ID, &codec->rev);
+
+	if (request_mem_region(base, 0x8000, "ymfpci") == NULL) {
+		printk(KERN_ERR "ymfpci: unable to request mem region\n");
+		goto out_free;
+	}
+
+	if ((codec->reg_area_virt = ioremap(base, 0x8000)) == NULL) {
+		printk(KERN_ERR "ymfpci: unable to map registers\n");
+		goto out_release_region;
+	}
+
+	pci_set_master(pcidev);
+
+	printk(KERN_INFO "ymfpci: %s at 0x%lx IRQ %d\n",
+	    (char *)ent->driver_data, base, pcidev->irq);
+
+	ymfpci_aclink_reset(pcidev);
+	if (ymfpci_codec_ready(codec, 0, 1) < 0)
+		goto out_unmap;
+
+#ifdef CONFIG_SOUND_YMFPCI_LEGACY
+	if (assigned == 0) {
+		codec->iomidi = mpu_io;
+		codec->iosynth = synth_io;
+		if (ymfpci_setup_legacy(codec, pcidev) < 0)
+			goto out_unmap;
+		assigned = 1;
+	}
+#endif
+
+	ymfpci_download_image(codec);
+
+	if (ymfpci_memalloc(codec) < 0)
+		goto out_disable_dsp;
+	ymf_memload(codec);
+
+	if (request_irq(pcidev->irq, ymf_interrupt, SA_SHIRQ, "ymfpci", codec) != 0) {
+		printk(KERN_ERR "ymfpci: unable to request IRQ %d\n",
+		    pcidev->irq);
+		goto out_memfree;
+	}
+
+	/* register /dev/dsp */
+	if ((codec->dev_audio = register_sound_dsp(&ymf_fops, -1)) < 0) {
+		printk(KERN_ERR "ymfpci: unable to register dsp\n");
+		goto out_free_irq;
+	}
+
+	/*
+	 * Poke just the primary for the moment.
+	 */
+	if ((err = ymf_ac97_init(codec, 0)) != 0)
+		goto out_unregister_sound_dsp;
+
+#ifdef CONFIG_SOUND_YMFPCI_LEGACY
+	codec->opl3_data.name = "ymfpci";
+	codec->mpu_data.name  = "ymfpci";
+
+	codec->opl3_data.io_base = codec->iosynth;
+	codec->opl3_data.irq     = -1;
+
+	codec->mpu_data.io_base  = codec->iomidi;
+	codec->mpu_data.irq      = -1;	/* May be different from our PCI IRQ. */
+
+	if (codec->iomidi) {
+		if (!probe_uart401(&codec->mpu_data, THIS_MODULE)) {
+			codec->iomidi = 0;	/* XXX kludge */
+		}
+	}
+#endif /* CONFIG_SOUND_YMFPCI_LEGACY */
+
+	/* put it into driver list */
+	spin_lock(&ymf_devs_lock);
+	list_add_tail(&codec->ymf_devs, &ymf_devs);
+	spin_unlock(&ymf_devs_lock);
+	pci_set_drvdata(pcidev, codec);
+
+	return 0;
+
+ out_unregister_sound_dsp:
+	unregister_sound_dsp(codec->dev_audio);
+ out_free_irq:
+	free_irq(pcidev->irq, codec);
+ out_memfree:
+	ymfpci_memfree(codec);
+ out_disable_dsp:
+	ymfpci_disable_dsp(codec);
+	ctrl = ymfpci_readw(codec, YDSXGR_GLOBALCTRL);
+	ymfpci_writew(codec, YDSXGR_GLOBALCTRL, ctrl & ~0x0007);
+	ymfpci_writel(codec, YDSXGR_STATUS, ~0);
+ out_unmap:
+	iounmap(codec->reg_area_virt);
+ out_release_region:
+	release_mem_region(pci_resource_start(pcidev, 0), 0x8000);
+ out_free:
+	if (codec->ac97_codec[0])
+		ac97_release_codec(codec->ac97_codec[0]);
+	return -ENODEV;
+}
+
+static void __devexit ymf_remove_one(struct pci_dev *pcidev)
+{
+	__u16 ctrl;
+	ymfpci_t *codec = pci_get_drvdata(pcidev);
+
+	/* remove from list of devices */
+	spin_lock(&ymf_devs_lock);
+	list_del(&codec->ymf_devs);
+	spin_unlock(&ymf_devs_lock);
+
+	unregister_sound_mixer(codec->ac97_codec[0]->dev_mixer);
+	ac97_release_codec(codec->ac97_codec[0]);
+	unregister_sound_dsp(codec->dev_audio);
+	free_irq(pcidev->irq, codec);
+	ymfpci_memfree(codec);
+	ymfpci_writel(codec, YDSXGR_STATUS, ~0);
+	ymfpci_disable_dsp(codec);
+	ctrl = ymfpci_readw(codec, YDSXGR_GLOBALCTRL);
+	ymfpci_writew(codec, YDSXGR_GLOBALCTRL, ctrl & ~0x0007);
+	iounmap(codec->reg_area_virt);
+	release_mem_region(pci_resource_start(pcidev, 0), 0x8000);
+#ifdef CONFIG_SOUND_YMFPCI_LEGACY
+	if (codec->iomidi) {
+		unload_uart401(&codec->mpu_data);
+	}
+#endif /* CONFIG_SOUND_YMFPCI_LEGACY */
+}
+
+MODULE_AUTHOR("Jaroslav Kysela");
+MODULE_DESCRIPTION("Yamaha YMF7xx PCI Audio");
+MODULE_LICENSE("GPL");
+
+static struct pci_driver ymfpci_driver = {
+	.name		= "ymfpci",
+	.id_table	= ymf_id_tbl,
+	.probe		= ymf_probe_one,
+	.remove		= __devexit_p(ymf_remove_one),
+	.suspend	= ymf_suspend,
+	.resume		= ymf_resume
+};
+
+static int __init ymf_init_module(void)
+{
+	return pci_module_init(&ymfpci_driver);
+}
+
+static void __exit ymf_cleanup_module (void)
+{
+	pci_unregister_driver(&ymfpci_driver);
+}
+
+module_init(ymf_init_module);
+module_exit(ymf_cleanup_module);