Linux-2.6.12-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, 3615 insertions, 0 deletions

diff --git a/sound/oss/via82cxxx_audio.c b/sound/oss/via82cxxx_audio.c
new file mode 100644
index 000000000000..b387e1e52485
--- /dev/null
+++ b/sound/oss/via82cxxx_audio.c
@@ -0,0 +1,3615 @@
+/*
+ * Support for VIA 82Cxxx Audio Codecs
+ * Copyright 1999,2000 Jeff Garzik
+ *
+ * Updated to support the VIA 8233/8235 audio subsystem
+ * Alan Cox <alan@redhat.com> (C) Copyright 2002, 2003 Red Hat Inc
+ *
+ * Distributed under the GNU GENERAL PUBLIC LICENSE (GPL) Version 2.
+ * See the "COPYING" file distributed with this software for more info.
+ * NO WARRANTY
+ *
+ * For a list of known bugs (errata) and documentation,
+ * see via-audio.pdf in Documentation/DocBook.
+ * If this documentation does not exist, run "make pdfdocs".
+ */
+
+
+#define VIA_VERSION	"1.9.1-ac4-2.5"
+
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/fs.h>
+#include <linux/mm.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/proc_fs.h>
+#include <linux/spinlock.h>
+#include <linux/sound.h>
+#include <linux/poll.h>
+#include <linux/soundcard.h>
+#include <linux/ac97_codec.h>
+#include <linux/smp_lock.h>
+#include <linux/ioport.h>
+#include <linux/delay.h>
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include <asm/semaphore.h>
+#include "sound_config.h"
+#include "dev_table.h"
+#include "mpu401.h"
+
+
+#undef VIA_DEBUG	/* define to enable debugging output and checks */
+#ifdef VIA_DEBUG
+/* note: prints function name for you */
+#define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , ## args)
+#else
+#define DPRINTK(fmt, args...)
+#endif
+
+#undef VIA_NDEBUG	/* define to disable lightweight runtime checks */
+#ifdef VIA_NDEBUG
+#define assert(expr)
+#else
+#define assert(expr) \
+        if(!(expr)) {					\
+        printk( "Assertion failed! %s,%s,%s,line=%d\n",	\
+        #expr,__FILE__,__FUNCTION__,__LINE__);		\
+        }
+#endif
+
+#define VIA_SUPPORT_MMAP 1 /* buggy, for now... */
+
+#define MAX_CARDS	1
+
+#define VIA_CARD_NAME	"VIA 82Cxxx Audio driver " VIA_VERSION
+#define VIA_MODULE_NAME "via82cxxx"
+#define PFX		VIA_MODULE_NAME ": "
+
+#define VIA_COUNTER_LIMIT	100000
+
+/* size of DMA buffers */
+#define VIA_MAX_BUFFER_DMA_PAGES	32
+
+/* buffering default values in ms */
+#define VIA_DEFAULT_FRAG_TIME		20
+#define VIA_DEFAULT_BUFFER_TIME		500
+
+/* the hardware has a 256 fragment limit */
+#define VIA_MIN_FRAG_NUMBER		2
+#define VIA_MAX_FRAG_NUMBER		128
+
+#define VIA_MAX_FRAG_SIZE		PAGE_SIZE
+#define VIA_MIN_FRAG_SIZE		(VIA_MAX_BUFFER_DMA_PAGES * PAGE_SIZE / VIA_MAX_FRAG_NUMBER)
+
+
+/* 82C686 function 5 (audio codec) PCI configuration registers */
+#define VIA_ACLINK_STATUS	0x40
+#define VIA_ACLINK_CTRL		0x41
+#define VIA_FUNC_ENABLE		0x42
+#define VIA_PNP_CONTROL		0x43
+#define VIA_FM_NMI_CTRL		0x48
+
+/*
+ * controller base 0 (scatter-gather) registers
+ *
+ * NOTE: Via datasheet lists first channel as "read"
+ * channel and second channel as "write" channel.
+ * I changed the naming of the constants to be more
+ * clear than I felt the datasheet to be.
+ */
+
+#define VIA_BASE0_PCM_OUT_CHAN	0x00 /* output PCM to user */
+#define VIA_BASE0_PCM_OUT_CHAN_STATUS 0x00
+#define VIA_BASE0_PCM_OUT_CHAN_CTRL	0x01
+#define VIA_BASE0_PCM_OUT_CHAN_TYPE	0x02
+
+#define VIA_BASE0_PCM_IN_CHAN		0x10 /* input PCM from user */
+#define VIA_BASE0_PCM_IN_CHAN_STATUS	0x10
+#define VIA_BASE0_PCM_IN_CHAN_CTRL	0x11
+#define VIA_BASE0_PCM_IN_CHAN_TYPE	0x12
+
+/* offsets from base */
+#define VIA_PCM_STATUS			0x00
+#define VIA_PCM_CONTROL			0x01
+#define VIA_PCM_TYPE			0x02
+#define VIA_PCM_LEFTVOL			0x02
+#define VIA_PCM_RIGHTVOL		0x03
+#define VIA_PCM_TABLE_ADDR		0x04
+#define VIA_PCM_STOPRATE		0x08	/* 8233+ */
+#define VIA_PCM_BLOCK_COUNT		0x0C
+
+/* XXX unused DMA channel for FM PCM data */
+#define VIA_BASE0_FM_OUT_CHAN		0x20
+#define VIA_BASE0_FM_OUT_CHAN_STATUS	0x20
+#define VIA_BASE0_FM_OUT_CHAN_CTRL	0x21
+#define VIA_BASE0_FM_OUT_CHAN_TYPE	0x22
+
+/* Six channel audio output on 8233 */
+#define VIA_BASE0_MULTI_OUT_CHAN		0x40
+#define VIA_BASE0_MULTI_OUT_CHAN_STATUS		0x40
+#define VIA_BASE0_MULTI_OUT_CHAN_CTRL		0x41
+#define VIA_BASE0_MULTI_OUT_CHAN_TYPE		0x42
+
+#define VIA_BASE0_AC97_CTRL		0x80
+#define VIA_BASE0_SGD_STATUS_SHADOW	0x84
+#define VIA_BASE0_GPI_INT_ENABLE	0x8C
+#define VIA_INTR_OUT			((1<<0) |  (1<<4) |  (1<<8))
+#define VIA_INTR_IN			((1<<1) |  (1<<5) |  (1<<9))
+#define VIA_INTR_FM			((1<<2) |  (1<<6) | (1<<10))
+#define VIA_INTR_MASK		(VIA_INTR_OUT | VIA_INTR_IN | VIA_INTR_FM)
+
+/* Newer VIA we need to monitor the low 3 bits of each channel. This
+   mask covers the channels we don't yet use as well 
+ */
+ 
+#define VIA_NEW_INTR_MASK		0x77077777UL
+
+/* VIA_BASE0_AUDIO_xxx_CHAN_TYPE bits */
+#define VIA_IRQ_ON_FLAG			(1<<0)	/* int on each flagged scatter block */
+#define VIA_IRQ_ON_EOL			(1<<1)	/* int at end of scatter list */
+#define VIA_INT_SEL_PCI_LAST_LINE_READ	(0)	/* int at PCI read of last line */
+#define VIA_INT_SEL_LAST_SAMPLE_SENT	(1<<2)	/* int at last sample sent */
+#define VIA_INT_SEL_ONE_LINE_LEFT	(1<<3)	/* int at less than one line to send */
+#define VIA_PCM_FMT_STEREO		(1<<4)	/* PCM stereo format (bit clear == mono) */
+#define VIA_PCM_FMT_16BIT		(1<<5)	/* PCM 16-bit format (bit clear == 8-bit) */
+#define VIA_PCM_REC_FIFO		(1<<6)	/* PCM Recording FIFO */
+#define VIA_RESTART_SGD_ON_EOL		(1<<7)	/* restart scatter-gather at EOL */
+#define VIA_PCM_FMT_MASK		(VIA_PCM_FMT_STEREO|VIA_PCM_FMT_16BIT)
+#define VIA_CHAN_TYPE_MASK		(VIA_RESTART_SGD_ON_EOL | \
+					 VIA_IRQ_ON_FLAG | \
+					 VIA_IRQ_ON_EOL)
+#define VIA_CHAN_TYPE_INT_SELECT	(VIA_INT_SEL_LAST_SAMPLE_SENT)
+
+/* PCI configuration register bits and masks */
+#define VIA_CR40_AC97_READY	0x01
+#define VIA_CR40_AC97_LOW_POWER	0x02
+#define VIA_CR40_SECONDARY_READY 0x04
+
+#define VIA_CR41_AC97_ENABLE	0x80 /* enable AC97 codec */
+#define VIA_CR41_AC97_RESET	0x40 /* clear bit to reset AC97 */
+#define VIA_CR41_AC97_WAKEUP	0x20 /* wake up from power-down mode */
+#define VIA_CR41_AC97_SDO	0x10 /* force Serial Data Out (SDO) high */
+#define VIA_CR41_VRA		0x08 /* enable variable sample rate */
+#define VIA_CR41_PCM_ENABLE	0x04 /* AC Link SGD Read Channel PCM Data Output */
+#define VIA_CR41_FM_PCM_ENABLE	0x02 /* AC Link FM Channel PCM Data Out */
+#define VIA_CR41_SB_PCM_ENABLE	0x01 /* AC Link SB PCM Data Output */
+#define VIA_CR41_BOOT_MASK	(VIA_CR41_AC97_ENABLE | \
+				 VIA_CR41_AC97_WAKEUP | \
+				 VIA_CR41_AC97_SDO)
+#define VIA_CR41_RUN_MASK	(VIA_CR41_AC97_ENABLE | \
+				 VIA_CR41_AC97_RESET | \
+				 VIA_CR41_VRA | \
+				 VIA_CR41_PCM_ENABLE)
+
+#define VIA_CR42_SB_ENABLE	0x01
+#define VIA_CR42_MIDI_ENABLE	0x02
+#define VIA_CR42_FM_ENABLE	0x04
+#define VIA_CR42_GAME_ENABLE	0x08
+#define VIA_CR42_MIDI_IRQMASK   0x40
+#define VIA_CR42_MIDI_PNP	0x80
+
+#define VIA_CR44_SECOND_CODEC_SUPPORT	(1 << 6)
+#define VIA_CR44_AC_LINK_ACCESS		(1 << 7)
+
+#define VIA_CR48_FM_TRAP_TO_NMI		(1 << 2)
+
+/* controller base 0 register bitmasks */
+#define VIA_INT_DISABLE_MASK		(~(0x01|0x02))
+#define VIA_SGD_STOPPED			(1 << 2)
+#define VIA_SGD_PAUSED			(1 << 6)
+#define VIA_SGD_ACTIVE			(1 << 7)
+#define VIA_SGD_TERMINATE		(1 << 6)
+#define VIA_SGD_FLAG			(1 << 0)
+#define VIA_SGD_EOL			(1 << 1)
+#define VIA_SGD_START			(1 << 7)
+
+#define VIA_CR80_FIRST_CODEC		0
+#define VIA_CR80_SECOND_CODEC		(1 << 30)
+#define VIA_CR80_FIRST_CODEC_VALID	(1 << 25)
+#define VIA_CR80_VALID			(1 << 25)
+#define VIA_CR80_SECOND_CODEC_VALID	(1 << 27)
+#define VIA_CR80_BUSY			(1 << 24)
+#define VIA_CR83_BUSY			(1)
+#define VIA_CR83_FIRST_CODEC_VALID	(1 << 1)
+#define VIA_CR80_READ			(1 << 23)
+#define VIA_CR80_WRITE_MODE		0
+#define VIA_CR80_REG_IDX(idx)		((((idx) & 0xFF) >> 1) << 16)
+
+/* capabilities we announce */
+#ifdef VIA_SUPPORT_MMAP
+#define VIA_DSP_CAP (DSP_CAP_REVISION | DSP_CAP_DUPLEX | DSP_CAP_MMAP | \
+		     DSP_CAP_TRIGGER | DSP_CAP_REALTIME)
+#else
+#define VIA_DSP_CAP (DSP_CAP_REVISION | DSP_CAP_DUPLEX | \
+		     DSP_CAP_TRIGGER | DSP_CAP_REALTIME)
+#endif
+
+/* scatter-gather DMA table entry, exactly as passed to hardware */
+struct via_sgd_table {
+	u32 addr;
+	u32 count;	/* includes additional VIA_xxx bits also */
+};
+
+#define VIA_EOL (1 << 31)
+#define VIA_FLAG (1 << 30)
+#define VIA_STOP (1 << 29)
+
+
+enum via_channel_states {
+	sgd_stopped = 0,
+	sgd_in_progress = 1,
+};
+
+
+struct via_buffer_pgtbl {
+	dma_addr_t handle;
+	void *cpuaddr;
+};
+
+
+struct via_channel {
+	atomic_t n_frags;
+	atomic_t hw_ptr;
+	wait_queue_head_t wait;
+
+	unsigned int sw_ptr;
+	unsigned int slop_len;
+	unsigned int n_irqs;
+	int bytes;
+
+	unsigned is_active : 1;
+	unsigned is_record : 1;
+	unsigned is_mapped : 1;
+	unsigned is_enabled : 1;
+	unsigned is_multi: 1;	/* 8233 6 channel */
+	u8 pcm_fmt;		/* VIA_PCM_FMT_xxx */
+	u8 channels;		/* Channel count */
+
+	unsigned rate;		/* sample rate */
+	unsigned int frag_size;
+	unsigned int frag_number;
+	
+	unsigned char intmask;
+
+	volatile struct via_sgd_table *sgtable;
+	dma_addr_t sgt_handle;
+
+	unsigned int page_number;
+	struct via_buffer_pgtbl pgtbl[VIA_MAX_BUFFER_DMA_PAGES];
+
+	long iobase;
+
+	const char *name;
+};
+
+
+/* data stored for each chip */
+struct via_info {
+	struct pci_dev *pdev;
+	long baseaddr;
+
+	struct ac97_codec *ac97;
+	spinlock_t ac97_lock;
+	spinlock_t lock;
+	int card_num;		/* unique card number, from 0 */
+
+	int dev_dsp;		/* /dev/dsp index from register_sound_dsp() */
+
+	unsigned rev_h : 1;
+	unsigned legacy: 1;	/* Has legacy ports */
+	unsigned intmask: 1;	/* Needs int bits */
+	unsigned sixchannel: 1;	/* 8233/35 with 6 channel support */
+	unsigned volume: 1;
+
+	int locked_rate : 1;
+	
+	int mixer_vol;		/* 8233/35 volume  - not yet implemented */
+
+	struct semaphore syscall_sem;
+	struct semaphore open_sem;
+
+	/* The 8233/8235 have 4 DX audio channels, two record and
+	   one six channel out. We bind ch_in to DX 1, ch_out to multichannel
+	   and ch_fm to DX 2. DX 3 and REC0/REC1 are unused at the
+	   moment */
+	   
+	struct via_channel ch_in;
+	struct via_channel ch_out;
+	struct via_channel ch_fm;
+
+#ifdef CONFIG_MIDI_VIA82CXXX
+        void *midi_devc;
+        struct address_info midi_info;
+#endif
+};
+
+
+/* number of cards, used for assigning unique numbers to cards */
+static unsigned via_num_cards;
+
+
+
+/****************************************************************
+ *
+ * prototypes
+ *
+ *
+ */
+
+static int via_init_one (struct pci_dev *dev, const struct pci_device_id *id);
+static void __devexit via_remove_one (struct pci_dev *pdev);
+
+static ssize_t via_dsp_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos);
+static ssize_t via_dsp_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos);
+static unsigned int via_dsp_poll(struct file *file, struct poll_table_struct *wait);
+static int via_dsp_ioctl (struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg);
+static int via_dsp_open (struct inode *inode, struct file *file);
+static int via_dsp_release(struct inode *inode, struct file *file);
+static int via_dsp_mmap(struct file *file, struct vm_area_struct *vma);
+
+static u16 via_ac97_read_reg (struct ac97_codec *codec, u8 reg);
+static void via_ac97_write_reg (struct ac97_codec *codec, u8 reg, u16 value);
+static u8 via_ac97_wait_idle (struct via_info *card);
+
+static void via_chan_free (struct via_info *card, struct via_channel *chan);
+static void via_chan_clear (struct via_info *card, struct via_channel *chan);
+static void via_chan_pcm_fmt (struct via_channel *chan, int reset);
+static void via_chan_buffer_free (struct via_info *card, struct via_channel *chan);
+
+
+/****************************************************************
+ *
+ * Various data the driver needs
+ *
+ *
+ */
+
+
+static struct pci_device_id via_pci_tbl[] = {
+	{ PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_5,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+	{ PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_5,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1},
+	{ 0, }
+};
+MODULE_DEVICE_TABLE(pci,via_pci_tbl);
+
+
+static struct pci_driver via_driver = {
+	.name		= VIA_MODULE_NAME,
+	.id_table	= via_pci_tbl,
+	.probe		= via_init_one,
+	.remove		= __devexit_p(via_remove_one),
+};
+
+
+/****************************************************************
+ *
+ * Low-level base 0 register read/write helpers
+ *
+ *
+ */
+
+/**
+ *	via_chan_stop - Terminate DMA on specified PCM channel
+ *	@iobase: PCI base address for SGD channel registers
+ *
+ *	Terminate scatter-gather DMA operation for given
+ *	channel (derived from @iobase), if DMA is active.
+ *
+ *	Note that @iobase is not the PCI base address,
+ *	but the PCI base address plus an offset to
+ *	one of three PCM channels supported by the chip.
+ *
+ */
+
+static inline void via_chan_stop (long iobase)
+{
+	if (inb (iobase + VIA_PCM_STATUS) & VIA_SGD_ACTIVE)
+		outb (VIA_SGD_TERMINATE, iobase + VIA_PCM_CONTROL);
+}
+
+
+/**
+ *	via_chan_status_clear - Clear status flags on specified DMA channel
+ *	@iobase: PCI base address for SGD channel registers
+ *
+ *	Clear any pending status flags for the given
+ *	DMA channel (derived from @iobase), if any
+ *	flags are asserted.
+ *
+ *	Note that @iobase is not the PCI base address,
+ *	but the PCI base address plus an offset to
+ *	one of three PCM channels supported by the chip.
+ *
+ */
+
+static inline void via_chan_status_clear (long iobase)
+{
+	u8 tmp = inb (iobase + VIA_PCM_STATUS);
+
+	if (tmp != 0)
+		outb (tmp, iobase + VIA_PCM_STATUS);
+}
+
+
+/**
+ *	sg_begin - Begin recording or playback on a PCM channel
+ *	@chan: Channel for which DMA operation shall begin
+ *
+ *	Start scatter-gather DMA for the given channel.
+ *
+ */
+
+static inline void sg_begin (struct via_channel *chan)
+{
+	DPRINTK("Start with intmask %d\n", chan->intmask);
+	DPRINTK("About to start from %d to %d\n", 
+		inl(chan->iobase + VIA_PCM_BLOCK_COUNT),
+		inb(chan->iobase + VIA_PCM_STOPRATE + 3));
+	outb (VIA_SGD_START|chan->intmask, chan->iobase + VIA_PCM_CONTROL);
+	DPRINTK("Status is now %02X\n", inb(chan->iobase + VIA_PCM_STATUS));
+	DPRINTK("Control is now %02X\n", inb(chan->iobase + VIA_PCM_CONTROL));
+}
+
+
+static int sg_active (long iobase)
+{
+	u8 tmp = inb (iobase + VIA_PCM_STATUS);
+	if ((tmp & VIA_SGD_STOPPED) || (tmp & VIA_SGD_PAUSED)) {
+		printk(KERN_WARNING "via82cxxx warning: SG stopped or paused\n");
+		return 0;
+	}
+	if (tmp & VIA_SGD_ACTIVE)
+		return 1;
+	return 0;
+}
+
+static int via_sg_offset(struct via_channel *chan)
+{
+	return inl (chan->iobase + VIA_PCM_BLOCK_COUNT) & 0x00FFFFFF;
+}
+
+/****************************************************************
+ *
+ * Miscellaneous debris
+ *
+ *
+ */
+
+
+/**
+ *	via_syscall_down - down the card-specific syscell semaphore
+ *	@card: Private info for specified board
+ *	@nonblock: boolean, non-zero if O_NONBLOCK is set
+ *
+ *	Encapsulates standard method of acquiring the syscall sem.
+ *
+ *	Returns negative errno on error, or zero for success.
+ */
+
+static inline int via_syscall_down (struct via_info *card, int nonblock)
+{
+	/* Thomas Sailer:
+	 * EAGAIN is supposed to be used if IO is pending,
+	 * not if there is contention on some internal
+	 * synchronization primitive which should be
+	 * held only for a short time anyway
+	 */
+	nonblock = 0;
+
+	if (nonblock) {
+		if (down_trylock (&card->syscall_sem))
+			return -EAGAIN;
+	} else {
+		if (down_interruptible (&card->syscall_sem))
+			return -ERESTARTSYS;
+	}
+
+	return 0;
+}
+
+
+/**
+ *	via_stop_everything - Stop all audio operations
+ *	@card: Private info for specified board
+ *
+ *	Stops all DMA operations and interrupts, and clear
+ *	any pending status bits resulting from those operations.
+ */
+
+static void via_stop_everything (struct via_info *card)
+{
+	u8 tmp, new_tmp;
+
+	DPRINTK ("ENTER\n");
+
+	assert (card != NULL);
+
+	/*
+	 * terminate any existing operations on audio read/write channels
+	 */
+	via_chan_stop (card->baseaddr + VIA_BASE0_PCM_OUT_CHAN);
+	via_chan_stop (card->baseaddr + VIA_BASE0_PCM_IN_CHAN);
+	via_chan_stop (card->baseaddr + VIA_BASE0_FM_OUT_CHAN);
+	if(card->sixchannel)
+		via_chan_stop (card->baseaddr + VIA_BASE0_MULTI_OUT_CHAN);
+
+	/*
+	 * clear any existing stops / flags (sanity check mainly)
+	 */
+	via_chan_status_clear (card->baseaddr + VIA_BASE0_PCM_OUT_CHAN);
+	via_chan_status_clear (card->baseaddr + VIA_BASE0_PCM_IN_CHAN);
+	via_chan_status_clear (card->baseaddr + VIA_BASE0_FM_OUT_CHAN);
+	if(card->sixchannel)
+		via_chan_status_clear (card->baseaddr + VIA_BASE0_MULTI_OUT_CHAN);
+
+	/*
+	 * clear any enabled interrupt bits
+	 */
+	tmp = inb (card->baseaddr + VIA_BASE0_PCM_OUT_CHAN_TYPE);
+	new_tmp = tmp & ~(VIA_IRQ_ON_FLAG|VIA_IRQ_ON_EOL|VIA_RESTART_SGD_ON_EOL);
+	if (tmp != new_tmp)
+		outb (0, card->baseaddr + VIA_BASE0_PCM_OUT_CHAN_TYPE);
+
+	tmp = inb (card->baseaddr + VIA_BASE0_PCM_IN_CHAN_TYPE);
+	new_tmp = tmp & ~(VIA_IRQ_ON_FLAG|VIA_IRQ_ON_EOL|VIA_RESTART_SGD_ON_EOL);
+	if (tmp != new_tmp)
+		outb (0, card->baseaddr + VIA_BASE0_PCM_IN_CHAN_TYPE);
+
+	tmp = inb (card->baseaddr + VIA_BASE0_FM_OUT_CHAN_TYPE);
+	new_tmp = tmp & ~(VIA_IRQ_ON_FLAG|VIA_IRQ_ON_EOL|VIA_RESTART_SGD_ON_EOL);
+	if (tmp != new_tmp)
+		outb (0, card->baseaddr + VIA_BASE0_FM_OUT_CHAN_TYPE);
+
+	if(card->sixchannel)
+	{
+		tmp = inb (card->baseaddr + VIA_BASE0_MULTI_OUT_CHAN_TYPE);
+		new_tmp = tmp & ~(VIA_IRQ_ON_FLAG|VIA_IRQ_ON_EOL|VIA_RESTART_SGD_ON_EOL);
+		if (tmp != new_tmp)
+			outb (0, card->baseaddr + VIA_BASE0_MULTI_OUT_CHAN_TYPE);
+	}
+
+	udelay(10);
+
+	/*
+	 * clear any existing flags
+	 */
+	via_chan_status_clear (card->baseaddr + VIA_BASE0_PCM_OUT_CHAN);
+	via_chan_status_clear (card->baseaddr + VIA_BASE0_PCM_IN_CHAN);
+	via_chan_status_clear (card->baseaddr + VIA_BASE0_FM_OUT_CHAN);
+
+	DPRINTK ("EXIT\n");
+}
+
+
+/**
+ *	via_set_rate - Set PCM rate for given channel
+ *	@ac97: Pointer to generic codec info struct
+ *	@chan: Private info for specified channel
+ *	@rate: Desired PCM sample rate, in Khz
+ *
+ *	Sets the PCM sample rate for a channel.
+ *
+ *	Values for @rate are clamped to a range of 4000 Khz through 48000 Khz,
+ *	due to hardware constraints.
+ */
+
+static int via_set_rate (struct ac97_codec *ac97,
+			 struct via_channel *chan, unsigned rate)
+{
+	struct via_info *card = ac97->private_data;
+	int rate_reg;
+	u32 dacp;
+	u32 mast_vol, phone_vol, mono_vol, pcm_vol;
+	u32 mute_vol = 0x8000;	/* The mute volume? -- Seems to work! */
+
+	DPRINTK ("ENTER, rate = %d\n", rate);
+
+	if (chan->rate == rate)
+		goto out;
+	if (card->locked_rate) {
+		chan->rate = 48000;
+		goto out;
+	}
+
+	if (rate > 48000)		rate = 48000;
+	if (rate < 4000) 		rate = 4000;
+
+	rate_reg = chan->is_record ? AC97_PCM_LR_ADC_RATE :
+			    AC97_PCM_FRONT_DAC_RATE;
+
+	/* Save current state */
+	dacp=via_ac97_read_reg(ac97, AC97_POWER_CONTROL);
+	mast_vol = via_ac97_read_reg(ac97, AC97_MASTER_VOL_STEREO);
+	mono_vol = via_ac97_read_reg(ac97, AC97_MASTER_VOL_MONO);
+	phone_vol = via_ac97_read_reg(ac97, AC97_HEADPHONE_VOL);
+	pcm_vol = via_ac97_read_reg(ac97, AC97_PCMOUT_VOL);
+	/* Mute - largely reduces popping */
+	via_ac97_write_reg(ac97, AC97_MASTER_VOL_STEREO, mute_vol);
+	via_ac97_write_reg(ac97, AC97_MASTER_VOL_MONO, mute_vol);
+	via_ac97_write_reg(ac97, AC97_HEADPHONE_VOL, mute_vol);
+       	via_ac97_write_reg(ac97, AC97_PCMOUT_VOL, mute_vol);
+	/* Power down the DAC */
+	via_ac97_write_reg(ac97, AC97_POWER_CONTROL, dacp|0x0200);
+
+        /* Set new rate */
+	via_ac97_write_reg (ac97, rate_reg, rate);
+
+	/* Power DAC back up */
+	via_ac97_write_reg(ac97, AC97_POWER_CONTROL, dacp);
+	udelay (200); /* reduces popping */
+
+	/* Restore volumes */
+	via_ac97_write_reg(ac97, AC97_MASTER_VOL_STEREO, mast_vol);
+	via_ac97_write_reg(ac97, AC97_MASTER_VOL_MONO, mono_vol);
+	via_ac97_write_reg(ac97, AC97_HEADPHONE_VOL, phone_vol);
+	via_ac97_write_reg(ac97, AC97_PCMOUT_VOL, pcm_vol);
+
+	/* the hardware might return a value different than what we
+	 * passed to it, so read the rate value back from hardware
+	 * to see what we came up with
+	 */
+	chan->rate = via_ac97_read_reg (ac97, rate_reg);
+
+	if (chan->rate == 0) {
+		card->locked_rate = 1;
+		chan->rate = 48000;
+		printk (KERN_WARNING PFX "Codec rate locked at 48Khz\n");
+	}
+
+out:
+	DPRINTK ("EXIT, returning rate %d Hz\n", chan->rate);
+	return chan->rate;
+}
+
+
+/****************************************************************
+ *
+ * Channel-specific operations
+ *
+ *
+ */
+
+
+/**
+ *	via_chan_init_defaults - Initialize a struct via_channel
+ *	@card: Private audio chip info
+ *	@chan: Channel to be initialized
+ *
+ *	Zero @chan, and then set all static defaults for the structure.
+ */
+
+static void via_chan_init_defaults (struct via_info *card, struct via_channel *chan)
+{
+	memset (chan, 0, sizeof (*chan));
+
+	if(card->intmask)
+		chan->intmask = 0x23;	/* Turn on the IRQ bits */
+		
+	if (chan == &card->ch_out) {
+		chan->name = "PCM-OUT";
+		if(card->sixchannel)
+		{
+			chan->iobase = card->baseaddr + VIA_BASE0_MULTI_OUT_CHAN;
+			chan->is_multi = 1;
+			DPRINTK("Using multichannel for pcm out\n");
+		}
+		else
+			chan->iobase = card->baseaddr + VIA_BASE0_PCM_OUT_CHAN;
+	} else if (chan == &card->ch_in) {
+		chan->name = "PCM-IN";
+		chan->iobase = card->baseaddr + VIA_BASE0_PCM_IN_CHAN;
+		chan->is_record = 1;
+	} else if (chan == &card->ch_fm) {
+		chan->name = "PCM-OUT-FM";
+		chan->iobase = card->baseaddr + VIA_BASE0_FM_OUT_CHAN;
+	} else {
+		BUG();
+	}
+
+	init_waitqueue_head (&chan->wait);
+
+	chan->pcm_fmt = VIA_PCM_FMT_MASK;
+	chan->is_enabled = 1;
+
+	chan->frag_number = 0;
+        chan->frag_size = 0;
+	atomic_set(&chan->n_frags, 0);
+	atomic_set (&chan->hw_ptr, 0);
+}
+
+/**
+ *      via_chan_init - Initialize PCM channel
+ *      @card: Private audio chip info
+ *      @chan: Channel to be initialized
+ *
+ *      Performs some of the preparations necessary to begin
+ *      using a PCM channel.
+ *
+ *      Currently the preparations consist of
+ *      setting the PCM channel to a known state.
+ */
+
+
+static void via_chan_init (struct via_info *card, struct via_channel *chan)
+{
+
+        DPRINTK ("ENTER\n");
+
+	/* bzero channel structure, and init members to defaults */
+        via_chan_init_defaults (card, chan);
+
+        /* stop any existing channel output */
+        via_chan_clear (card, chan);
+        via_chan_status_clear (chan->iobase);
+        via_chan_pcm_fmt (chan, 1);
+
+	DPRINTK ("EXIT\n");
+}
+
+/**
+ *	via_chan_buffer_init - Initialize PCM channel buffer
+ *	@card: Private audio chip info
+ *	@chan: Channel to be initialized
+ *
+ *	Performs some of the preparations necessary to begin
+ *	using a PCM channel.
+ *
+ *	Currently the preparations include allocating the
+ *	scatter-gather DMA table and buffers,
+ *	and passing the
+ *	address of the DMA table to the hardware.
+ *
+ *	Note that special care is taken when passing the
+ *	DMA table address to hardware, because it was found
+ *	during driver development that the hardware did not
+ *	always "take" the address.
+ */
+
+static int via_chan_buffer_init (struct via_info *card, struct via_channel *chan)
+{
+	int page, offset;
+	int i;
+
+	DPRINTK ("ENTER\n");
+
+
+	chan->intmask = 0;
+	if(card->intmask)
+		chan->intmask = 0x23;	/* Turn on the IRQ bits */
+		
+	if (chan->sgtable != NULL) {
+		DPRINTK ("EXIT\n");
+		return 0;
+	}
+
+	/* alloc DMA-able memory for scatter-gather table */
+	chan->sgtable = pci_alloc_consistent (card->pdev,
+		(sizeof (struct via_sgd_table) * chan->frag_number),
+		&chan->sgt_handle);
+	if (!chan->sgtable) {
+		printk (KERN_ERR PFX "DMA table alloc fail, aborting\n");
+		DPRINTK ("EXIT\n");
+		return -ENOMEM;
+	}
+
+	memset ((void*)chan->sgtable, 0,
+		(sizeof (struct via_sgd_table) * chan->frag_number));
+
+	/* alloc DMA-able memory for scatter-gather buffers */
+
+	chan->page_number = (chan->frag_number * chan->frag_size) / PAGE_SIZE +
+			    (((chan->frag_number * chan->frag_size) % PAGE_SIZE) ? 1 : 0);
+
+	for (i = 0; i < chan->page_number; i++) {
+		chan->pgtbl[i].cpuaddr = pci_alloc_consistent (card->pdev, PAGE_SIZE,
+					      &chan->pgtbl[i].handle);
+
+		if (!chan->pgtbl[i].cpuaddr) {
+			chan->page_number = i;
+			goto err_out_nomem;
+		}
+
+#ifndef VIA_NDEBUG
+                memset (chan->pgtbl[i].cpuaddr, 0xBC, chan->frag_size);
+#endif
+
+#if 1
+                DPRINTK ("dmabuf_pg #%d (h=%lx, v2p=%lx, a=%p)\n",
+			i, (long)chan->pgtbl[i].handle,
+			virt_to_phys(chan->pgtbl[i].cpuaddr),
+			chan->pgtbl[i].cpuaddr);
+#endif
+	}
+
+	for (i = 0; i < chan->frag_number; i++) {
+
+		page = i / (PAGE_SIZE / chan->frag_size);
+		offset = (i % (PAGE_SIZE / chan->frag_size)) * chan->frag_size;
+
+		chan->sgtable[i].count = cpu_to_le32 (chan->frag_size | VIA_FLAG);
+		chan->sgtable[i].addr = cpu_to_le32 (chan->pgtbl[page].handle + offset);
+
+#if 1
+		DPRINTK ("dmabuf #%d (32(h)=%lx)\n",
+			 i,
+			 (long)chan->sgtable[i].addr);
+#endif
+	}
+
+	/* overwrite the last buffer information */
+	chan->sgtable[chan->frag_number - 1].count = cpu_to_le32 (chan->frag_size | VIA_EOL);
+
+	/* set location of DMA-able scatter-gather info table */
+	DPRINTK ("outl (0x%X, 0x%04lX)\n",
+		chan->sgt_handle, chan->iobase + VIA_PCM_TABLE_ADDR);
+
+	via_ac97_wait_idle (card);
+	outl (chan->sgt_handle, chan->iobase + VIA_PCM_TABLE_ADDR);
+	udelay (20);
+	via_ac97_wait_idle (card);
+	/* load no rate adaption, stereo 16bit, set up ring slots */
+	if(card->sixchannel)
+	{
+		if(!chan->is_multi)
+		{
+			outl (0xFFFFF | (0x3 << 20) | (chan->frag_number << 24), chan->iobase + VIA_PCM_STOPRATE);
+			udelay (20);
+			via_ac97_wait_idle (card);
+		}
+	}
+
+	DPRINTK ("inl (0x%lX) = %x\n",
+		chan->iobase + VIA_PCM_TABLE_ADDR,
+		inl(chan->iobase + VIA_PCM_TABLE_ADDR));
+
+	DPRINTK ("EXIT\n");
+	return 0;
+
+err_out_nomem:
+	printk (KERN_ERR PFX "DMA buffer alloc fail, aborting\n");
+	via_chan_buffer_free (card, chan);
+	DPRINTK ("EXIT\n");
+	return -ENOMEM;
+}
+
+
+/**
+ *	via_chan_free - Release a PCM channel
+ *	@card: Private audio chip info
+ *	@chan: Channel to be released
+ *
+ *	Performs all the functions necessary to clean up
+ *	an initialized channel.
+ *
+ *	Currently these functions include disabled any
+ *	active DMA operations, setting the PCM channel
+ *	back to a known state, and releasing any allocated
+ *	sound buffers.
+ */
+
+static void via_chan_free (struct via_info *card, struct via_channel *chan)
+{
+	DPRINTK ("ENTER\n");
+
+	spin_lock_irq (&card->lock);
+
+	/* stop any existing channel output */
+	via_chan_status_clear (chan->iobase);
+	via_chan_stop (chan->iobase);
+	via_chan_status_clear (chan->iobase);
+
+	spin_unlock_irq (&card->lock);
+
+	synchronize_irq(card->pdev->irq);
+
+	DPRINTK ("EXIT\n");
+}
+
+static void via_chan_buffer_free (struct via_info *card, struct via_channel *chan)
+{
+	int i;
+
+        DPRINTK ("ENTER\n");
+
+	/* zero location of DMA-able scatter-gather info table */
+	via_ac97_wait_idle(card);
+	outl (0, chan->iobase + VIA_PCM_TABLE_ADDR);
+
+	for (i = 0; i < chan->page_number; i++)
+		if (chan->pgtbl[i].cpuaddr) {
+			pci_free_consistent (card->pdev, PAGE_SIZE,
+					     chan->pgtbl[i].cpuaddr,
+					     chan->pgtbl[i].handle);
+			chan->pgtbl[i].cpuaddr = NULL;
+			chan->pgtbl[i].handle = 0;
+		}
+
+	chan->page_number = 0;
+
+	if (chan->sgtable) {
+		pci_free_consistent (card->pdev,
+			(sizeof (struct via_sgd_table) * chan->frag_number),
+			(void*)chan->sgtable, chan->sgt_handle);
+		chan->sgtable = NULL;
+	}
+
+	DPRINTK ("EXIT\n");
+}
+
+
+/**
+ *	via_chan_pcm_fmt - Update PCM channel settings
+ *	@chan: Channel to be updated
+ *	@reset: Boolean.  If non-zero, channel will be reset
+ *		to 8-bit mono mode.
+ *
+ *	Stores the settings of the current PCM format,
+ *	8-bit or 16-bit, and mono/stereo, into the
+ *	hardware settings for the specified channel.
+ *	If @reset is non-zero, the channel is reset
+ *	to 8-bit mono mode.  Otherwise, the channel
+ *	is set to the values stored in the channel
+ *	information struct @chan.
+ */
+
+static void via_chan_pcm_fmt (struct via_channel *chan, int reset)
+{
+	DPRINTK ("ENTER, pcm_fmt=0x%02X, reset=%s\n",
+		 chan->pcm_fmt, reset ? "yes" : "no");
+
+	assert (chan != NULL);
+
+	if (reset)
+	{
+		/* reset to 8-bit mono mode */
+		chan->pcm_fmt = 0;
+		chan->channels = 1;
+	}
+
+	/* enable interrupts on FLAG and EOL */
+	chan->pcm_fmt |= VIA_CHAN_TYPE_MASK;
+
+	/* if we are recording, enable recording fifo bit */
+	if (chan->is_record)
+		chan->pcm_fmt |= VIA_PCM_REC_FIFO;
+	/* set interrupt select bits where applicable (PCM in & out channels) */
+	if (!chan->is_record)
+		chan->pcm_fmt |= VIA_CHAN_TYPE_INT_SELECT;
+	
+	DPRINTK("SET FMT - %02x %02x\n", chan->intmask , chan->is_multi);
+	
+	if(chan->intmask)
+	{
+		u32 m;
+
+		/*
+		 *	Channel 0x4 is up to 6 x 16bit and has to be
+		 *	programmed differently 
+		 */
+		 		
+		if(chan->is_multi)
+		{
+			u8 c = 0;
+			
+			/*
+			 *	Load the type bit for num channels
+			 *	and 8/16bit
+			 */
+			 
+			if(chan->pcm_fmt & VIA_PCM_FMT_16BIT)
+				c = 1 << 7;
+			if(chan->pcm_fmt & VIA_PCM_FMT_STEREO)
+				c |= (2<<4);
+			else
+				c |= (1<<4);
+				
+			outb(c, chan->iobase + VIA_PCM_TYPE);
+			
+			/*
+			 *	Set the channel steering
+			 *	Mono
+			 *		Channel 0 to slot 3
+			 *		Channel 0 to slot 4
+			 *	Stereo
+			 *		Channel 0 to slot 3
+			 *		Channel 1 to slot 4
+			 */
+			 
+			switch(chan->channels)
+			{
+				case 1:
+					outl(0xFF000000 | (1<<0) | (1<<4) , chan->iobase + VIA_PCM_STOPRATE);
+					break;
+				case 2:
+					outl(0xFF000000 | (1<<0) | (2<<4) , chan->iobase + VIA_PCM_STOPRATE);
+					break;
+				case 4:
+					outl(0xFF000000 | (1<<0) | (2<<4) | (3<<8) | (4<<12), chan->iobase + VIA_PCM_STOPRATE);
+					break;
+				case 6:
+					outl(0xFF000000 | (1<<0) | (2<<4) | (5<<8) | (6<<12) | (3<<16) | (4<<20), chan->iobase + VIA_PCM_STOPRATE);
+					break;
+			}				
+		}
+		else
+		{
+			/*
+			 *	New style, turn off channel volume
+			 *	control, set bits in the right register
+			 */	
+			outb(0x0, chan->iobase + VIA_PCM_LEFTVOL);
+			outb(0x0, chan->iobase + VIA_PCM_RIGHTVOL);
+
+			m = inl(chan->iobase + VIA_PCM_STOPRATE);
+			m &= ~(3<<20);
+			if(chan->pcm_fmt & VIA_PCM_FMT_STEREO)
+				m |= (1 << 20);
+			if(chan->pcm_fmt & VIA_PCM_FMT_16BIT)
+				m |= (1 << 21);
+			outl(m, chan->iobase + VIA_PCM_STOPRATE);
+		}		
+	}
+	else
+		outb (chan->pcm_fmt, chan->iobase + VIA_PCM_TYPE);
+
+
+	DPRINTK ("EXIT, pcm_fmt = 0x%02X, reg = 0x%02X\n",
+		 chan->pcm_fmt,
+		 inb (chan->iobase + VIA_PCM_TYPE));
+}
+
+
+/**
+ *	via_chan_clear - Stop DMA channel operation, and reset pointers
+ *	@card: the chip to accessed
+ *	@chan: Channel to be cleared
+ *
+ *	Call via_chan_stop to halt DMA operations, and then resets
+ *	all software pointers which track DMA operation.
+ */
+
+static void via_chan_clear (struct via_info *card, struct via_channel *chan)
+{
+	DPRINTK ("ENTER\n");
+	via_chan_stop (chan->iobase);
+	via_chan_buffer_free(card, chan);
+	chan->is_active = 0;
+	chan->is_mapped = 0;
+	chan->is_enabled = 1;
+	chan->slop_len = 0;
+	chan->sw_ptr = 0;
+	chan->n_irqs = 0;
+	atomic_set (&chan->hw_ptr, 0);
+	DPRINTK ("EXIT\n");
+}
+
+
+/**
+ *	via_chan_set_speed - Set PCM sample rate for given channel
+ *	@card: Private info for specified board
+ *	@chan: Channel whose sample rate will be adjusted
+ *	@val: New sample rate, in Khz
+ *
+ *	Helper function for the %SNDCTL_DSP_SPEED ioctl.  OSS semantics
+ *	demand that all audio operations halt (if they are not already
+ *	halted) when the %SNDCTL_DSP_SPEED is given.
+ *
+ *	This function halts all audio operations for the given channel
+ *	@chan, and then calls via_set_rate to set the audio hardware
+ *	to the new rate.
+ */
+
+static int via_chan_set_speed (struct via_info *card,
+			       struct via_channel *chan, int val)
+{
+	DPRINTK ("ENTER, requested rate = %d\n", val);
+
+	via_chan_clear (card, chan);
+
+	val = via_set_rate (card->ac97, chan, val);
+
+	DPRINTK ("EXIT, returning %d\n", val);
+	return val;
+}
+
+
+/**
+ *	via_chan_set_fmt - Set PCM sample size for given channel
+ *	@card: Private info for specified board
+ *	@chan: Channel whose sample size will be adjusted
+ *	@val: New sample size, use the %AFMT_xxx constants
+ *
+ *	Helper function for the %SNDCTL_DSP_SETFMT ioctl.  OSS semantics
+ *	demand that all audio operations halt (if they are not already
+ *	halted) when the %SNDCTL_DSP_SETFMT is given.
+ *
+ *	This function halts all audio operations for the given channel
+ *	@chan, and then calls via_chan_pcm_fmt to set the audio hardware
+ *	to the new sample size, either 8-bit or 16-bit.
+ */
+
+static int via_chan_set_fmt (struct via_info *card,
+			     struct via_channel *chan, int val)
+{
+	DPRINTK ("ENTER, val=%s\n",
+		 val == AFMT_U8 ? "AFMT_U8" :
+	 	 val == AFMT_S16_LE ? "AFMT_S16_LE" :
+		 "unknown");
+
+	via_chan_clear (card, chan);
+
+	assert (val != AFMT_QUERY); /* this case is handled elsewhere */
+
+	switch (val) {
+	case AFMT_S16_LE:
+		if ((chan->pcm_fmt & VIA_PCM_FMT_16BIT) == 0) {
+			chan->pcm_fmt |= VIA_PCM_FMT_16BIT;
+			via_chan_pcm_fmt (chan, 0);
+		}
+		break;
+
+	case AFMT_U8:
+		if (chan->pcm_fmt & VIA_PCM_FMT_16BIT) {
+			chan->pcm_fmt &= ~VIA_PCM_FMT_16BIT;
+			via_chan_pcm_fmt (chan, 0);
+		}
+		break;
+
+	default:
+		DPRINTK ("unknown AFMT: 0x%X\n", val);
+		val = AFMT_S16_LE;
+	}
+
+	DPRINTK ("EXIT\n");
+	return val;
+}
+
+
+/**
+ *	via_chan_set_stereo - Enable or disable stereo for a DMA channel
+ *	@card: Private info for specified board
+ *	@chan: Channel whose stereo setting will be adjusted
+ *	@val: New sample size, use the %AFMT_xxx constants
+ *
+ *	Helper function for the %SNDCTL_DSP_CHANNELS and %SNDCTL_DSP_STEREO ioctls.  OSS semantics
+ *	demand that all audio operations halt (if they are not already
+ *	halted) when %SNDCTL_DSP_CHANNELS or SNDCTL_DSP_STEREO is given.
+ *
+ *	This function halts all audio operations for the given channel
+ *	@chan, and then calls via_chan_pcm_fmt to set the audio hardware
+ *	to enable or disable stereo.
+ */
+
+static int via_chan_set_stereo (struct via_info *card,
+			        struct via_channel *chan, int val)
+{
+	DPRINTK ("ENTER, channels = %d\n", val);
+
+	via_chan_clear (card, chan);
+
+	switch (val) {
+
+	/* mono */
+	case 1:
+		chan->pcm_fmt &= ~VIA_PCM_FMT_STEREO;
+		chan->channels = 1;
+		via_chan_pcm_fmt (chan, 0);
+		break;
+
+	/* stereo */
+	case 2:
+		chan->pcm_fmt |= VIA_PCM_FMT_STEREO;
+		chan->channels = 2;
+		via_chan_pcm_fmt (chan, 0);
+		break;
+
+	case 4:
+	case 6:
+		if(chan->is_multi)
+		{
+			chan->pcm_fmt |= VIA_PCM_FMT_STEREO;
+			chan->channels = val;
+			break;
+		}
+	/* unknown */
+	default:
+		val = -EINVAL;
+		break;
+	}
+
+	DPRINTK ("EXIT, returning %d\n", val);
+	return val;
+}
+
+static int via_chan_set_buffering (struct via_info *card,
+                                struct via_channel *chan, int val)
+{
+	int shift;
+
+        DPRINTK ("ENTER\n");
+
+	/* in both cases the buffer cannot be changed */
+	if (chan->is_active || chan->is_mapped) {
+		DPRINTK ("EXIT\n");
+		return -EINVAL;
+	}
+
+	/* called outside SETFRAGMENT */
+	/* set defaults or do nothing */
+	if (val < 0) {
+
+		if (chan->frag_size && chan->frag_number)
+			goto out;
+
+		DPRINTK ("\n");
+
+		chan->frag_size = (VIA_DEFAULT_FRAG_TIME * chan->rate * chan->channels
+				   * ((chan->pcm_fmt & VIA_PCM_FMT_16BIT) ? 2 : 1)) / 1000 - 1;
+
+		shift = 0;
+		while (chan->frag_size) {
+			chan->frag_size >>= 1;
+			shift++;
+		}
+		chan->frag_size = 1 << shift;
+
+		chan->frag_number = (VIA_DEFAULT_BUFFER_TIME / VIA_DEFAULT_FRAG_TIME);
+
+		DPRINTK ("setting default values %d %d\n", chan->frag_size, chan->frag_number);
+	} else {
+		chan->frag_size = 1 << (val & 0xFFFF);
+		chan->frag_number = (val >> 16) & 0xFFFF;
+
+		DPRINTK ("using user values %d %d\n", chan->frag_size, chan->frag_number);
+	}
+
+	/* quake3 wants frag_number to be a power of two */
+	shift = 0;
+	while (chan->frag_number) {
+		chan->frag_number >>= 1;
+		shift++;
+	}
+	chan->frag_number = 1 << shift;
+
+	if (chan->frag_size > VIA_MAX_FRAG_SIZE)
+		chan->frag_size = VIA_MAX_FRAG_SIZE;
+	else if (chan->frag_size < VIA_MIN_FRAG_SIZE)
+		chan->frag_size = VIA_MIN_FRAG_SIZE;
+
+	if (chan->frag_number < VIA_MIN_FRAG_NUMBER)
+                chan->frag_number = VIA_MIN_FRAG_NUMBER;
+        if (chan->frag_number > VIA_MAX_FRAG_NUMBER)
+        	chan->frag_number = VIA_MAX_FRAG_NUMBER;
+
+	if ((chan->frag_number * chan->frag_size) / PAGE_SIZE > VIA_MAX_BUFFER_DMA_PAGES)
+		chan->frag_number = (VIA_MAX_BUFFER_DMA_PAGES * PAGE_SIZE) / chan->frag_size;
+
+out:
+	if (chan->is_record)
+		atomic_set (&chan->n_frags, 0);
+	else
+		atomic_set (&chan->n_frags, chan->frag_number);
+
+	DPRINTK ("EXIT\n");
+
+	return 0;
+}
+
+#ifdef VIA_CHAN_DUMP_BUFS
+/**
+ *	via_chan_dump_bufs - Display DMA table contents
+ *	@chan: Channel whose DMA table will be displayed
+ *
+ *	Debugging function which displays the contents of the
+ *	scatter-gather DMA table for the given channel @chan.
+ */
+
+static void via_chan_dump_bufs (struct via_channel *chan)
+{
+	int i;
+
+	for (i = 0; i < chan->frag_number; i++) {
+		DPRINTK ("#%02d: addr=%x, count=%u, flag=%d, eol=%d\n",
+			 i, chan->sgtable[i].addr,
+			 chan->sgtable[i].count & 0x00FFFFFF,
+			 chan->sgtable[i].count & VIA_FLAG ? 1 : 0,
+			 chan->sgtable[i].count & VIA_EOL ? 1 : 0);
+	}
+	DPRINTK ("buf_in_use = %d, nextbuf = %d\n",
+		 atomic_read (&chan->buf_in_use),
+		 atomic_read (&chan->sw_ptr));
+}
+#endif /* VIA_CHAN_DUMP_BUFS */
+
+
+/**
+ *	via_chan_flush_frag - Flush partially-full playback buffer to hardware
+ *	@chan: Channel whose DMA table will be flushed
+ *
+ *	Flushes partially-full playback buffer to hardware.
+ */
+
+static void via_chan_flush_frag (struct via_channel *chan)
+{
+	DPRINTK ("ENTER\n");
+
+	assert (chan->slop_len > 0);
+
+	if (chan->sw_ptr == (chan->frag_number - 1))
+		chan->sw_ptr = 0;
+	else
+		chan->sw_ptr++;
+
+	chan->slop_len = 0;
+
+	assert (atomic_read (&chan->n_frags) > 0);
+	atomic_dec (&chan->n_frags);
+
+	DPRINTK ("EXIT\n");
+}
+
+
+
+/**
+ *	via_chan_maybe_start - Initiate audio hardware DMA operation
+ *	@chan: Channel whose DMA is to be started
+ *
+ *	Initiate DMA operation, if the DMA engine for the given
+ *	channel @chan is not already active.
+ */
+
+static inline void via_chan_maybe_start (struct via_channel *chan)
+{
+	assert (chan->is_active == sg_active(chan->iobase));
+
+	DPRINTK ("MAYBE START %s\n", chan->name);
+	if (!chan->is_active && chan->is_enabled) {
+		chan->is_active = 1;
+		sg_begin (chan);
+		DPRINTK ("starting channel %s\n", chan->name);
+	}
+}
+
+
+/****************************************************************
+ *
+ * Interface to ac97-codec module
+ *
+ *
+ */
+
+/**
+ *	via_ac97_wait_idle - Wait until AC97 codec is not busy
+ *	@card: Private info for specified board
+ *
+ *	Sleep until the AC97 codec is no longer busy.
+ *	Returns the final value read from the SGD
+ *	register being polled.
+ */
+
+static u8 via_ac97_wait_idle (struct via_info *card)
+{
+	u8 tmp8;
+	int counter = VIA_COUNTER_LIMIT;
+
+	DPRINTK ("ENTER/EXIT\n");
+
+	assert (card != NULL);
+	assert (card->pdev != NULL);
+
+	do {
+		udelay (15);
+
+		tmp8 = inb (card->baseaddr + 0x83);
+	} while ((tmp8 & VIA_CR83_BUSY) && (counter-- > 0));
+
+	if (tmp8 & VIA_CR83_BUSY)
+		printk (KERN_WARNING PFX "timeout waiting on AC97 codec\n");
+	return tmp8;
+}
+
+
+/**
+ *	via_ac97_read_reg - Read AC97 standard register
+ *	@codec: Pointer to generic AC97 codec info
+ *	@reg: Index of AC97 register to be read
+ *
+ *	Read the value of a single AC97 codec register,
+ *	as defined by the Intel AC97 specification.
+ *
+ *	Defines the standard AC97 read-register operation
+ *	required by the kernel's ac97_codec interface.
+ *
+ *	Returns the 16-bit value stored in the specified
+ *	register.
+ */
+
+static u16 via_ac97_read_reg (struct ac97_codec *codec, u8 reg)
+{
+	unsigned long data;
+	struct via_info *card;
+	int counter;
+
+	DPRINTK ("ENTER\n");
+
+	assert (codec != NULL);
+	assert (codec->private_data != NULL);
+
+	card = codec->private_data;
+	
+	spin_lock(&card->ac97_lock);
+
+	/* Every time we write to register 80 we cause a transaction.
+	   The only safe way to clear the valid bit is to write it at
+	   the same time as the command */
+	data = (reg << 16) | VIA_CR80_READ | VIA_CR80_VALID;
+
+	outl (data, card->baseaddr + VIA_BASE0_AC97_CTRL);
+	udelay (20);
+
+	for (counter = VIA_COUNTER_LIMIT; counter > 0; counter--) {
+		udelay (1);
+		if ((((data = inl(card->baseaddr + VIA_BASE0_AC97_CTRL)) &
+		      (VIA_CR80_VALID|VIA_CR80_BUSY)) == VIA_CR80_VALID))
+			goto out;
+	}
+
+	printk (KERN_WARNING PFX "timeout while reading AC97 codec (0x%lX)\n", data);
+	goto err_out;
+
+out:
+	/* Once the valid bit has become set, we must wait a complete AC97
+	   frame before the data has settled. */
+	udelay(25);
+	data = (unsigned long) inl (card->baseaddr + VIA_BASE0_AC97_CTRL);
+
+	outb (0x02, card->baseaddr + 0x83);
+
+	if (((data & 0x007F0000) >> 16) == reg) {
+		DPRINTK ("EXIT, success, data=0x%lx, retval=0x%lx\n",
+			 data, data & 0x0000FFFF);
+		spin_unlock(&card->ac97_lock);
+		return data & 0x0000FFFF;
+	}
+
+	printk (KERN_WARNING "via82cxxx_audio: not our index: reg=0x%x, newreg=0x%lx\n",
+		reg, ((data & 0x007F0000) >> 16));
+
+err_out:
+	spin_unlock(&card->ac97_lock);
+	DPRINTK ("EXIT, returning 0\n");
+	return 0;
+}
+
+
+/**
+ *	via_ac97_write_reg - Write AC97 standard register
+ *	@codec: Pointer to generic AC97 codec info
+ *	@reg: Index of AC97 register to be written
+ *	@value: Value to be written to AC97 register
+ *
+ *	Write the value of a single AC97 codec register,
+ *	as defined by the Intel AC97 specification.
+ *
+ *	Defines the standard AC97 write-register operation
+ *	required by the kernel's ac97_codec interface.
+ */
+
+static void via_ac97_write_reg (struct ac97_codec *codec, u8 reg, u16 value)
+{
+	u32 data;
+	struct via_info *card;
+	int counter;
+
+	DPRINTK ("ENTER\n");
+
+	assert (codec != NULL);
+	assert (codec->private_data != NULL);
+
+	card = codec->private_data;
+
+	spin_lock(&card->ac97_lock);
+	
+	data = (reg << 16) + value;
+	outl (data, card->baseaddr + VIA_BASE0_AC97_CTRL);
+	udelay (10);
+
+	for (counter = VIA_COUNTER_LIMIT; counter > 0; counter--) {
+		if ((inb (card->baseaddr + 0x83) & VIA_CR83_BUSY) == 0)
+			goto out;
+
+		udelay (15);
+	}
+
+	printk (KERN_WARNING PFX "timeout after AC97 codec write (0x%X, 0x%X)\n", reg, value);
+
+out:
+	spin_unlock(&card->ac97_lock);
+	DPRINTK ("EXIT\n");
+}
+
+
+static int via_mixer_open (struct inode *inode, struct file *file)
+{
+	int minor = iminor(inode);
+	struct via_info *card;
+	struct pci_dev *pdev = NULL;
+	struct pci_driver *drvr;
+
+	DPRINTK ("ENTER\n");
+
+	while ((pdev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pdev)) != NULL) {
+		drvr = pci_dev_driver (pdev);
+		if (drvr == &via_driver) {
+			assert (pci_get_drvdata (pdev) != NULL);
+
+			card = pci_get_drvdata (pdev);
+			if (card->ac97->dev_mixer == minor)
+				goto match;
+		}
+	}
+
+	DPRINTK ("EXIT, returning -ENODEV\n");
+	return -ENODEV;
+
+match:
+	file->private_data = card->ac97;
+
+	DPRINTK ("EXIT, returning 0\n");
+	return nonseekable_open(inode, file);
+}
+
+static int via_mixer_ioctl (struct inode *inode, struct file *file, unsigned int cmd,
+			    unsigned long arg)
+{
+	struct ac97_codec *codec = file->private_data;
+	struct via_info *card;
+	int nonblock = (file->f_flags & O_NONBLOCK);
+	int rc;
+
+	DPRINTK ("ENTER\n");
+
+	assert (codec != NULL);
+	card = codec->private_data;
+	assert (card != NULL);
+
+	rc = via_syscall_down (card, nonblock);
+	if (rc) goto out;
+	
+#if 0
+	/*
+	 *	Intercept volume control on 8233 and 8235
+	 */
+	if(card->volume)
+	{
+		switch(cmd)
+		{
+			case SOUND_MIXER_READ_VOLUME:
+				return card->mixer_vol;
+			case SOUND_MIXER_WRITE_VOLUME:
+			{
+				int v;
+				if(get_user(v, (int *)arg))
+				{
+					rc = -EFAULT;
+					goto out;
+				}
+				card->mixer_vol = v;
+			}
+		}
+	}		
+#endif
+	rc = codec->mixer_ioctl(codec, cmd, arg);
+
+	up (&card->syscall_sem);
+
+out:
+	DPRINTK ("EXIT, returning %d\n", rc);
+	return rc;
+}
+
+
+static struct file_operations via_mixer_fops = {
+	.owner		= THIS_MODULE,
+	.open		= via_mixer_open,
+	.llseek		= no_llseek,
+	.ioctl		= via_mixer_ioctl,
+};
+
+
+static int __devinit via_ac97_reset (struct via_info *card)
+{
+	struct pci_dev *pdev = card->pdev;
+	u8 tmp8;
+	u16 tmp16;
+
+	DPRINTK ("ENTER\n");
+
+	assert (pdev != NULL);
+
+#ifndef NDEBUG
+	{
+		u8 r40,r41,r42,r43,r44,r48;
+		pci_read_config_byte (card->pdev, 0x40, &r40);
+		pci_read_config_byte (card->pdev, 0x41, &r41);
+		pci_read_config_byte (card->pdev, 0x42, &r42);
+		pci_read_config_byte (card->pdev, 0x43, &r43);
+		pci_read_config_byte (card->pdev, 0x44, &r44);
+		pci_read_config_byte (card->pdev, 0x48, &r48);
+		DPRINTK ("PCI config: %02X %02X %02X %02X %02X %02X\n",
+			r40,r41,r42,r43,r44,r48);
+
+		spin_lock_irq (&card->lock);
+		DPRINTK ("regs==%02X %02X %02X %08X %08X %08X %08X\n",
+			 inb (card->baseaddr + 0x00),
+			 inb (card->baseaddr + 0x01),
+			 inb (card->baseaddr + 0x02),
+			 inl (card->baseaddr + 0x04),
+			 inl (card->baseaddr + 0x0C),
+			 inl (card->baseaddr + 0x80),
+			 inl (card->baseaddr + 0x84));
+		spin_unlock_irq (&card->lock);
+
+	}
+#endif
+
+        /*
+         * Reset AC97 controller: enable, disable, enable,
+         * pausing after each command for good luck.  Only
+	 * do this if the codec is not ready, because it causes
+	 * loud pops and such due to such a hard codec reset.
+         */
+	pci_read_config_byte (pdev, VIA_ACLINK_STATUS, &tmp8);
+	if ((tmp8 & VIA_CR40_AC97_READY) == 0) {
+        	pci_write_config_byte (pdev, VIA_ACLINK_CTRL,
+				       VIA_CR41_AC97_ENABLE |
+                		       VIA_CR41_AC97_RESET |
+				       VIA_CR41_AC97_WAKEUP);
+        	udelay (100);
+
+        	pci_write_config_byte (pdev, VIA_ACLINK_CTRL, 0);
+        	udelay (100);
+
+        	pci_write_config_byte (pdev, VIA_ACLINK_CTRL,
+				       VIA_CR41_AC97_ENABLE |
+				       VIA_CR41_PCM_ENABLE |
+                		       VIA_CR41_VRA | VIA_CR41_AC97_RESET);
+        	udelay (100);
+	}
+
+	/* Make sure VRA is enabled, in case we didn't do a
+	 * complete codec reset, above
+	 */
+	pci_read_config_byte (pdev, VIA_ACLINK_CTRL, &tmp8);
+	if (((tmp8 & VIA_CR41_VRA) == 0) ||
+	    ((tmp8 & VIA_CR41_AC97_ENABLE) == 0) ||
+	    ((tmp8 & VIA_CR41_PCM_ENABLE) == 0) ||
+	    ((tmp8 & VIA_CR41_AC97_RESET) == 0)) {
+        	pci_write_config_byte (pdev, VIA_ACLINK_CTRL,
+				       VIA_CR41_AC97_ENABLE |
+				       VIA_CR41_PCM_ENABLE |
+                		       VIA_CR41_VRA | VIA_CR41_AC97_RESET);
+        	udelay (100);
+	}
+
+	if(card->legacy)
+	{
+#if 0 /* this breaks on K7M */
+		/* disable legacy stuff */
+		pci_write_config_byte (pdev, 0x42, 0x00);
+		udelay(10);
+#endif
+
+		/* route FM trap to IRQ, disable FM trap */
+		pci_write_config_byte (pdev, 0x48, 0x05);
+		udelay(10);
+	}
+	
+	/* disable all codec GPI interrupts */
+	outl (0, pci_resource_start (pdev, 0) + 0x8C);
+
+	/* WARNING: this line is magic.  Remove this
+	 * and things break. */
+	/* enable variable rate */
+ 	tmp16 = via_ac97_read_reg (card->ac97, AC97_EXTENDED_STATUS);
+ 	if ((tmp16 & 1) == 0)
+ 		via_ac97_write_reg (card->ac97, AC97_EXTENDED_STATUS, tmp16 | 1);
+
+	DPRINTK ("EXIT, returning 0\n");
+	return 0;
+}
+
+
+static void via_ac97_codec_wait (struct ac97_codec *codec)
+{
+	assert (codec->private_data != NULL);
+	via_ac97_wait_idle (codec->private_data);
+}
+
+
+static int __devinit via_ac97_init (struct via_info *card)
+{
+	int rc;
+	u16 tmp16;
+
+	DPRINTK ("ENTER\n");
+
+	assert (card != NULL);
+
+	card->ac97 = ac97_alloc_codec();
+	if(card->ac97 == NULL)
+		return -ENOMEM;
+		
+	card->ac97->private_data = card;
+	card->ac97->codec_read = via_ac97_read_reg;
+	card->ac97->codec_write = via_ac97_write_reg;
+	card->ac97->codec_wait = via_ac97_codec_wait;
+
+	card->ac97->dev_mixer = register_sound_mixer (&via_mixer_fops, -1);
+	if (card->ac97->dev_mixer < 0) {
+		printk (KERN_ERR PFX "unable to register AC97 mixer, aborting\n");
+		DPRINTK ("EXIT, returning -EIO\n");
+		ac97_release_codec(card->ac97);
+		return -EIO;
+	}
+
+	rc = via_ac97_reset (card);
+	if (rc) {
+		printk (KERN_ERR PFX "unable to reset AC97 codec, aborting\n");
+		goto err_out;
+	}
+	
+	mdelay(10);
+	
+	if (ac97_probe_codec (card->ac97) == 0) {
+		printk (KERN_ERR PFX "unable to probe AC97 codec, aborting\n");
+		rc = -EIO;
+		goto err_out;
+	}
+
+	/* enable variable rate */
+	tmp16 = via_ac97_read_reg (card->ac97, AC97_EXTENDED_STATUS);
+	via_ac97_write_reg (card->ac97, AC97_EXTENDED_STATUS, tmp16 | 1);
+
+ 	/*
+ 	 * If we cannot enable VRA, we have a locked-rate codec.
+ 	 * We try again to enable VRA before assuming so, however.
+ 	 */
+ 	tmp16 = via_ac97_read_reg (card->ac97, AC97_EXTENDED_STATUS);
+ 	if ((tmp16 & 1) == 0) {
+ 		via_ac97_write_reg (card->ac97, AC97_EXTENDED_STATUS, tmp16 | 1);
+ 		tmp16 = via_ac97_read_reg (card->ac97, AC97_EXTENDED_STATUS);
+ 		if ((tmp16 & 1) == 0) {
+ 			card->locked_rate = 1;
+ 			printk (KERN_WARNING PFX "Codec rate locked at 48Khz\n");
+ 		}
+ 	}
+
+	DPRINTK ("EXIT, returning 0\n");
+	return 0;
+
+err_out:
+	unregister_sound_mixer (card->ac97->dev_mixer);
+	DPRINTK ("EXIT, returning %d\n", rc);
+	ac97_release_codec(card->ac97);
+	return rc;
+}
+
+
+static void via_ac97_cleanup (struct via_info *card)
+{
+	DPRINTK ("ENTER\n");
+
+	assert (card != NULL);
+	assert (card->ac97->dev_mixer >= 0);
+
+	unregister_sound_mixer (card->ac97->dev_mixer);
+	ac97_release_codec(card->ac97);
+
+	DPRINTK ("EXIT\n");
+}
+
+
+
+/****************************************************************
+ *
+ * Interrupt-related code
+ *
+ */
+
+/**
+ *	via_intr_channel - handle an interrupt for a single channel
+ *      @card: unused
+ *	@chan: handle interrupt for this channel
+ *
+ *	This is the "meat" of the interrupt handler,
+ *	containing the actions taken each time an interrupt
+ *	occurs.  All communication and coordination with
+ *	userspace takes place here.
+ *
+ *	Locking: inside card->lock
+ */
+
+static void via_intr_channel (struct via_info *card, struct via_channel *chan)
+{
+	u8 status;
+	int n;
+	
+	/* check pertinent bits of status register for action bits */
+	status = inb (chan->iobase) & (VIA_SGD_FLAG | VIA_SGD_EOL | VIA_SGD_STOPPED);
+	if (!status)
+		return;
+
+	/* acknowledge any flagged bits ASAP */
+	outb (status, chan->iobase);
+
+	if (!chan->sgtable) /* XXX: temporary solution */
+		return;
+
+	/* grab current h/w ptr value */
+	n = atomic_read (&chan->hw_ptr);
+
+	/* sanity check: make sure our h/w ptr doesn't have a weird value */
+	assert (n >= 0);
+	assert (n < chan->frag_number);
+
+	
+	/* reset SGD data structure in memory to reflect a full buffer,
+	 * and advance the h/w ptr, wrapping around to zero if needed
+	 */
+	if (n == (chan->frag_number - 1)) {
+		chan->sgtable[n].count = cpu_to_le32(chan->frag_size | VIA_EOL);
+		atomic_set (&chan->hw_ptr, 0);
+	} else {
+		chan->sgtable[n].count = cpu_to_le32(chan->frag_size | VIA_FLAG);
+		atomic_inc (&chan->hw_ptr);
+	}
+
+	/* accounting crap for SNDCTL_DSP_GETxPTR */
+	chan->n_irqs++;
+	chan->bytes += chan->frag_size;
+	/* FIXME - signed overflow is undefined */
+	if (chan->bytes < 0) /* handle overflow of 31-bit value */
+		chan->bytes = chan->frag_size;
+	/* all following checks only occur when not in mmap(2) mode */
+	if (!chan->is_mapped)
+	{
+		/* If we are recording, then n_frags represents the number
+		 * of fragments waiting to be handled by userspace.
+		 * If we are playback, then n_frags represents the number
+		 * of fragments remaining to be filled by userspace.
+		 * We increment here.  If we reach max number of fragments,
+		 * this indicates an underrun/overrun.  For this case under OSS,
+		 * we stop the record/playback process.
+		 */
+		if (atomic_read (&chan->n_frags) < chan->frag_number)
+			atomic_inc (&chan->n_frags);
+		assert (atomic_read (&chan->n_frags) <= chan->frag_number);
+		if (atomic_read (&chan->n_frags) == chan->frag_number) {
+			chan->is_active = 0;
+			via_chan_stop (chan->iobase);
+		}
+	}
+	/* wake up anyone listening to see when interrupts occur */
+	wake_up_all (&chan->wait);
+
+	DPRINTK ("%s intr, status=0x%02X, hwptr=0x%lX, chan->hw_ptr=%d\n",
+		 chan->name, status, (long) inl (chan->iobase + 0x04),
+		 atomic_read (&chan->hw_ptr));
+
+	DPRINTK ("%s intr, channel n_frags == %d, missed %d\n", chan->name,
+		 atomic_read (&chan->n_frags), missed);
+}
+
+
+static irqreturn_t  via_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+	struct via_info *card = dev_id;
+	u32 status32;
+
+	/* to minimize interrupt sharing costs, we use the SGD status
+	 * shadow register to check the status of all inputs and
+	 * outputs with a single 32-bit bus read.  If no interrupt
+	 * conditions are flagged, we exit immediately
+	 */
+	status32 = inl (card->baseaddr + VIA_BASE0_SGD_STATUS_SHADOW);
+	if (!(status32 & VIA_INTR_MASK))
+        {
+#ifdef CONFIG_MIDI_VIA82CXXX
+	    	 if (card->midi_devc)
+                    	uart401intr(irq, card->midi_devc, regs);
+#endif
+		return IRQ_HANDLED;
+    	}
+	DPRINTK ("intr, status32 == 0x%08X\n", status32);
+
+	/* synchronize interrupt handling under SMP.  this spinlock
+	 * goes away completely on UP
+	 */
+	spin_lock (&card->lock);
+
+	if (status32 & VIA_INTR_OUT)
+		via_intr_channel (card, &card->ch_out);
+	if (status32 & VIA_INTR_IN)
+		via_intr_channel (card, &card->ch_in);
+	if (status32 & VIA_INTR_FM)
+		via_intr_channel (card, &card->ch_fm);
+
+	spin_unlock (&card->lock);
+	
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t via_new_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+	struct via_info *card = dev_id;
+	u32 status32;
+
+	/* to minimize interrupt sharing costs, we use the SGD status
+	 * shadow register to check the status of all inputs and
+	 * outputs with a single 32-bit bus read.  If no interrupt
+	 * conditions are flagged, we exit immediately
+	 */
+	status32 = inl (card->baseaddr + VIA_BASE0_SGD_STATUS_SHADOW);
+	if (!(status32 & VIA_NEW_INTR_MASK))
+		return IRQ_NONE;
+	/*
+	 * goes away completely on UP
+	 */
+	spin_lock (&card->lock);
+
+	via_intr_channel (card, &card->ch_out);
+	via_intr_channel (card, &card->ch_in);
+	via_intr_channel (card, &card->ch_fm);
+
+	spin_unlock (&card->lock);
+	return IRQ_HANDLED;
+}
+
+
+/**
+ *	via_interrupt_init - Initialize interrupt handling
+ *	@card: Private info for specified board
+ *
+ *	Obtain and reserve IRQ for using in handling audio events.
+ *	Also, disable any IRQ-generating resources, to make sure
+ *	we don't get interrupts before we want them.
+ */
+
+static int via_interrupt_init (struct via_info *card)
+{
+	u8 tmp8;
+
+	DPRINTK ("ENTER\n");
+
+	assert (card != NULL);
+	assert (card->pdev != NULL);
+
+	/* check for sane IRQ number. can this ever happen? */
+	if (card->pdev->irq < 2) {
+		printk (KERN_ERR PFX "insane IRQ %d, aborting\n",
+			card->pdev->irq);
+		DPRINTK ("EXIT, returning -EIO\n");
+		return -EIO;
+	}
+
+	/* VIA requires this is done */
+	pci_write_config_byte(card->pdev, PCI_INTERRUPT_LINE, card->pdev->irq);
+	
+	if(card->legacy)
+	{
+		/* make sure FM irq is not routed to us */
+		pci_read_config_byte (card->pdev, VIA_FM_NMI_CTRL, &tmp8);
+		if ((tmp8 & VIA_CR48_FM_TRAP_TO_NMI) == 0) {
+			tmp8 |= VIA_CR48_FM_TRAP_TO_NMI;
+			pci_write_config_byte (card->pdev, VIA_FM_NMI_CTRL, tmp8);
+		}
+		if (request_irq (card->pdev->irq, via_interrupt, SA_SHIRQ, VIA_MODULE_NAME, card)) {
+			printk (KERN_ERR PFX "unable to obtain IRQ %d, aborting\n",
+				card->pdev->irq);
+			DPRINTK ("EXIT, returning -EBUSY\n");
+			return -EBUSY;
+		}
+	}
+	else 
+	{
+		if (request_irq (card->pdev->irq, via_new_interrupt, SA_SHIRQ, VIA_MODULE_NAME, card)) {
+			printk (KERN_ERR PFX "unable to obtain IRQ %d, aborting\n",
+				card->pdev->irq);
+			DPRINTK ("EXIT, returning -EBUSY\n");
+			return -EBUSY;
+		}
+	}
+
+	DPRINTK ("EXIT, returning 0\n");
+	return 0;
+}
+
+
+/****************************************************************
+ *
+ * OSS DSP device
+ *
+ */
+
+static struct file_operations via_dsp_fops = {
+	.owner		= THIS_MODULE,
+	.open		= via_dsp_open,
+	.release	= via_dsp_release,
+	.read		= via_dsp_read,
+	.write		= via_dsp_write,
+	.poll		= via_dsp_poll,
+	.llseek		= no_llseek,
+	.ioctl		= via_dsp_ioctl,
+	.mmap		= via_dsp_mmap,
+};
+
+
+static int __devinit via_dsp_init (struct via_info *card)
+{
+	u8 tmp8;
+
+	DPRINTK ("ENTER\n");
+
+	assert (card != NULL);
+
+	if(card->legacy)
+	{
+		/* turn off legacy features, if not already */
+		pci_read_config_byte (card->pdev, VIA_FUNC_ENABLE, &tmp8);
+		if (tmp8 & (VIA_CR42_SB_ENABLE |  VIA_CR42_FM_ENABLE)) {
+			tmp8 &= ~(VIA_CR42_SB_ENABLE | VIA_CR42_FM_ENABLE);
+			pci_write_config_byte (card->pdev, VIA_FUNC_ENABLE, tmp8);
+		}
+	}
+
+	via_stop_everything (card);
+
+	card->dev_dsp = register_sound_dsp (&via_dsp_fops, -1);
+	if (card->dev_dsp < 0) {
+		DPRINTK ("EXIT, returning -ENODEV\n");
+		return -ENODEV;
+	}
+	DPRINTK ("EXIT, returning 0\n");
+	return 0;
+}
+
+
+static void via_dsp_cleanup (struct via_info *card)
+{
+	DPRINTK ("ENTER\n");
+
+	assert (card != NULL);
+	assert (card->dev_dsp >= 0);
+
+	via_stop_everything (card);
+
+	unregister_sound_dsp (card->dev_dsp);
+
+	DPRINTK ("EXIT\n");
+}
+
+
+static struct page * via_mm_nopage (struct vm_area_struct * vma,
+				    unsigned long address, int *type)
+{
+	struct via_info *card = vma->vm_private_data;
+	struct via_channel *chan = &card->ch_out;
+	struct page *dmapage;
+	unsigned long pgoff;
+	int rd, wr;
+
+	DPRINTK ("ENTER, start %lXh, ofs %lXh, pgoff %ld, addr %lXh\n",
+		 vma->vm_start,
+		 address - vma->vm_start,
+		 (address - vma->vm_start) >> PAGE_SHIFT,
+		 address);
+
+        if (address > vma->vm_end) {
+		DPRINTK ("EXIT, returning NOPAGE_SIGBUS\n");
+		return NOPAGE_SIGBUS; /* Disallow mremap */
+	}
+        if (!card) {
+		DPRINTK ("EXIT, returning NOPAGE_OOM\n");
+		return NOPAGE_OOM;	/* Nothing allocated */
+	}
+
+	pgoff = vma->vm_pgoff + ((address - vma->vm_start) >> PAGE_SHIFT);
+	rd = card->ch_in.is_mapped;
+	wr = card->ch_out.is_mapped;
+
+#ifndef VIA_NDEBUG
+	{
+	unsigned long max_bufs = chan->frag_number;
+	if (rd && wr) max_bufs *= 2;
+	/* via_dsp_mmap() should ensure this */
+	assert (pgoff < max_bufs);
+	}
+#endif
+
+	/* if full-duplex (read+write) and we have two sets of bufs,
+	 * then the playback buffers come first, sez soundcard.c */
+	if (pgoff >= chan->page_number) {
+		pgoff -= chan->page_number;
+		chan = &card->ch_in;
+	} else if (!wr)
+		chan = &card->ch_in;
+
+	assert ((((unsigned long)chan->pgtbl[pgoff].cpuaddr) % PAGE_SIZE) == 0);
+
+	dmapage = virt_to_page (chan->pgtbl[pgoff].cpuaddr);
+	DPRINTK ("EXIT, returning page %p for cpuaddr %lXh\n",
+		 dmapage, (unsigned long) chan->pgtbl[pgoff].cpuaddr);
+	get_page (dmapage);
+	if (type)
+		*type = VM_FAULT_MINOR;
+	return dmapage;
+}
+
+
+#ifndef VM_RESERVED
+static int via_mm_swapout (struct page *page, struct file *filp)
+{
+	return 0;
+}
+#endif /* VM_RESERVED */
+
+
+static struct vm_operations_struct via_mm_ops = {
+	.nopage		= via_mm_nopage,
+
+#ifndef VM_RESERVED
+	.swapout	= via_mm_swapout,
+#endif
+};
+
+
+static int via_dsp_mmap(struct file *file, struct vm_area_struct *vma)
+{
+	struct via_info *card;
+	int nonblock = (file->f_flags & O_NONBLOCK);
+	int rc = -EINVAL, rd=0, wr=0;
+	unsigned long max_size, size, start, offset;
+
+	assert (file != NULL);
+	assert (vma != NULL);
+	card = file->private_data;
+	assert (card != NULL);
+
+	DPRINTK ("ENTER, start %lXh, size %ld, pgoff %ld\n",
+		 vma->vm_start,
+		 vma->vm_end - vma->vm_start,
+		 vma->vm_pgoff);
+
+	max_size = 0;
+	if (vma->vm_flags & VM_READ) {
+		rd = 1;
+		via_chan_set_buffering(card, &card->ch_in, -1);
+		via_chan_buffer_init (card, &card->ch_in);
+		max_size += card->ch_in.page_number << PAGE_SHIFT;
+	}
+	if (vma->vm_flags & VM_WRITE) {
+		wr = 1;
+		via_chan_set_buffering(card, &card->ch_out, -1);
+		via_chan_buffer_init (card, &card->ch_out);
+		max_size += card->ch_out.page_number << PAGE_SHIFT;
+	}
+
+	start = vma->vm_start;
+	offset = (vma->vm_pgoff << PAGE_SHIFT);
+	size = vma->vm_end - vma->vm_start;
+
+	/* some basic size/offset sanity checks */
+	if (size > max_size)
+		goto out;
+	if (offset > max_size - size)
+		goto out;
+
+	rc = via_syscall_down (card, nonblock);
+	if (rc) goto out;
+
+	vma->vm_ops = &via_mm_ops;
+	vma->vm_private_data = card;
+
+#ifdef VM_RESERVED
+	vma->vm_flags |= VM_RESERVED;
+#endif
+
+	if (rd)
+		card->ch_in.is_mapped = 1;
+	if (wr)
+		card->ch_out.is_mapped = 1;
+
+	up (&card->syscall_sem);
+	rc = 0;
+
+out:
+	DPRINTK ("EXIT, returning %d\n", rc);
+	return rc;
+}
+
+
+static ssize_t via_dsp_do_read (struct via_info *card,
+				char __user *userbuf, size_t count,
+				int nonblock)
+{
+        DECLARE_WAITQUEUE(wait, current);
+	const char __user *orig_userbuf = userbuf;
+	struct via_channel *chan = &card->ch_in;
+	size_t size;
+	int n, tmp;
+	ssize_t ret = 0;
+
+	/* if SGD has not yet been started, start it */
+	via_chan_maybe_start (chan);
+
+handle_one_block:
+	/* just to be a nice neighbor */
+	/* Thomas Sailer:
+	 * But also to ourselves, release semaphore if we do so */
+	if (need_resched()) {
+		up(&card->syscall_sem);
+		schedule ();
+		ret = via_syscall_down (card, nonblock);
+		if (ret)
+			goto out;
+	}
+
+	/* grab current channel software pointer.  In the case of
+	 * recording, this is pointing to the next buffer that
+	 * will receive data from the audio hardware.
+	 */
+	n = chan->sw_ptr;
+
+	/* n_frags represents the number of fragments waiting
+	 * to be copied to userland.  sleep until at least
+	 * one buffer has been read from the audio hardware.
+	 */
+	add_wait_queue(&chan->wait, &wait);
+	for (;;) {
+		__set_current_state(TASK_INTERRUPTIBLE);
+		tmp = atomic_read (&chan->n_frags);
+		assert (tmp >= 0);
+		assert (tmp <= chan->frag_number);
+		if (tmp)
+			break;
+		if (nonblock || !chan->is_active) {
+			ret = -EAGAIN;
+			break;
+		}
+
+		up(&card->syscall_sem);
+
+		DPRINTK ("Sleeping on block %d\n", n);
+		schedule();
+
+		ret = via_syscall_down (card, nonblock);
+		if (ret)
+			break;
+
+		if (signal_pending (current)) {
+			ret = -ERESTARTSYS;
+			break;
+		}
+	}
+	set_current_state(TASK_RUNNING);
+	remove_wait_queue(&chan->wait, &wait);
+	if (ret)
+		goto out;
+
+	/* Now that we have a buffer we can read from, send
+	 * as much as sample data possible to userspace.
+	 */
+	while ((count > 0) && (chan->slop_len < chan->frag_size)) {
+		size_t slop_left = chan->frag_size - chan->slop_len;
+		void *base = chan->pgtbl[n / (PAGE_SIZE / chan->frag_size)].cpuaddr;
+		unsigned ofs = (n % (PAGE_SIZE / chan->frag_size)) * chan->frag_size;
+
+		size = (count < slop_left) ? count : slop_left;
+		if (copy_to_user (userbuf,
+				  base + ofs + chan->slop_len,
+				  size)) {
+			ret = -EFAULT;
+			goto out;
+		}
+
+		count -= size;
+		chan->slop_len += size;
+		userbuf += size;
+	}
+
+	/* If we didn't copy the buffer completely to userspace,
+	 * stop now.
+	 */
+	if (chan->slop_len < chan->frag_size)
+		goto out;
+
+	/*
+	 * If we get to this point, we copied one buffer completely
+	 * to userspace, give the buffer back to the hardware.
+	 */
+
+	/* advance channel software pointer to point to
+	 * the next buffer from which we will copy
+	 */
+	if (chan->sw_ptr == (chan->frag_number - 1))
+		chan->sw_ptr = 0;
+	else
+		chan->sw_ptr++;
+
+	/* mark one less buffer waiting to be processed */
+	assert (atomic_read (&chan->n_frags) > 0);
+	atomic_dec (&chan->n_frags);
+
+	/* we are at a block boundary, there is no fragment data */
+	chan->slop_len = 0;
+
+	DPRINTK ("Flushed block %u, sw_ptr now %u, n_frags now %d\n",
+		n, chan->sw_ptr, atomic_read (&chan->n_frags));
+
+	DPRINTK ("regs==%02X %02X %02X %08X %08X %08X %08X\n",
+		 inb (card->baseaddr + 0x00),
+		 inb (card->baseaddr + 0x01),
+		 inb (card->baseaddr + 0x02),
+		 inl (card->baseaddr + 0x04),
+		 inl (card->baseaddr + 0x0C),
+		 inl (card->baseaddr + 0x80),
+		 inl (card->baseaddr + 0x84));
+
+	if (count > 0)
+		goto handle_one_block;
+
+out:
+	return (userbuf != orig_userbuf) ? (userbuf - orig_userbuf) : ret;
+}
+
+
+static ssize_t via_dsp_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
+{
+	struct via_info *card;
+	int nonblock = (file->f_flags & O_NONBLOCK);
+	int rc;
+
+	DPRINTK ("ENTER, file=%p, buffer=%p, count=%u, ppos=%lu\n",
+		 file, buffer, count, ppos ? ((unsigned long)*ppos) : 0);
+
+	assert (file != NULL);
+	card = file->private_data;
+	assert (card != NULL);
+
+	rc = via_syscall_down (card, nonblock);
+	if (rc) goto out;
+
+	if (card->ch_in.is_mapped) {
+		rc = -ENXIO;
+		goto out_up;
+	}
+
+	via_chan_set_buffering(card, &card->ch_in, -1);
+        rc = via_chan_buffer_init (card, &card->ch_in);
+
+	if (rc)
+		goto out_up;
+
+	rc = via_dsp_do_read (card, buffer, count, nonblock);
+
+out_up:
+	up (&card->syscall_sem);
+out:
+	DPRINTK ("EXIT, returning %ld\n",(long) rc);
+	return rc;
+}
+
+
+static ssize_t via_dsp_do_write (struct via_info *card,
+				 const char __user *userbuf, size_t count,
+				 int nonblock)
+{
+        DECLARE_WAITQUEUE(wait, current);
+	const char __user *orig_userbuf = userbuf;
+	struct via_channel *chan = &card->ch_out;
+	volatile struct via_sgd_table *sgtable = chan->sgtable;
+	size_t size;
+	int n, tmp;
+	ssize_t ret = 0;
+
+handle_one_block:
+	/* just to be a nice neighbor */
+	/* Thomas Sailer:
+	 * But also to ourselves, release semaphore if we do so */
+	if (need_resched()) {
+		up(&card->syscall_sem);
+		schedule ();
+		ret = via_syscall_down (card, nonblock);
+		if (ret)
+			goto out;
+	}
+
+	/* grab current channel fragment pointer.  In the case of
+	 * playback, this is pointing to the next fragment that
+	 * should receive data from userland.
+	 */
+	n = chan->sw_ptr;
+
+	/* n_frags represents the number of fragments remaining
+	 * to be filled by userspace.  Sleep until
+	 * at least one fragment is available for our use.
+	 */
+	add_wait_queue(&chan->wait, &wait);
+	for (;;) {
+		__set_current_state(TASK_INTERRUPTIBLE);
+		tmp = atomic_read (&chan->n_frags);
+		assert (tmp >= 0);
+		assert (tmp <= chan->frag_number);
+		if (tmp)
+			break;
+		if (nonblock || !chan->is_active) {
+			ret = -EAGAIN;
+			break;
+		}
+
+		up(&card->syscall_sem);
+
+		DPRINTK ("Sleeping on page %d, tmp==%d, ir==%d\n", n, tmp, chan->is_record);
+		schedule();
+
+		ret = via_syscall_down (card, nonblock);
+		if (ret)
+			break;
+
+		if (signal_pending (current)) {
+			ret = -ERESTARTSYS;
+			break;
+		}
+	}
+	set_current_state(TASK_RUNNING);
+	remove_wait_queue(&chan->wait, &wait);
+	if (ret)
+		goto out;
+
+	/* Now that we have at least one fragment we can write to, fill the buffer
+	 * as much as possible with data from userspace.
+	 */
+	while ((count > 0) && (chan->slop_len < chan->frag_size)) {
+		size_t slop_left = chan->frag_size - chan->slop_len;
+
+		size = (count < slop_left) ? count : slop_left;
+		if (copy_from_user (chan->pgtbl[n / (PAGE_SIZE / chan->frag_size)].cpuaddr + (n % (PAGE_SIZE / chan->frag_size)) * chan->frag_size + chan->slop_len,
+				    userbuf, size)) {
+			ret = -EFAULT;
+			goto out;
+		}
+
+		count -= size;
+		chan->slop_len += size;
+		userbuf += size;
+	}
+
+	/* If we didn't fill up the buffer with data, stop now.
+         * Put a 'stop' marker in the DMA table too, to tell the
+         * audio hardware to stop if it gets here.
+         */
+	if (chan->slop_len < chan->frag_size) {
+		sgtable[n].count = cpu_to_le32 (chan->slop_len | VIA_EOL | VIA_STOP);
+		goto out;
+	}
+
+	/*
+         * If we get to this point, we have filled a buffer with
+         * audio data, flush the buffer to audio hardware.
+         */
+
+	/* Record the true size for the audio hardware to notice */
+        if (n == (chan->frag_number - 1))
+                sgtable[n].count = cpu_to_le32 (chan->frag_size | VIA_EOL);
+        else
+                sgtable[n].count = cpu_to_le32 (chan->frag_size | VIA_FLAG);
+
+	/* advance channel software pointer to point to
+	 * the next buffer we will fill with data
+	 */
+	if (chan->sw_ptr == (chan->frag_number - 1))
+		chan->sw_ptr = 0;
+	else
+		chan->sw_ptr++;
+
+	/* mark one less buffer as being available for userspace consumption */
+	assert (atomic_read (&chan->n_frags) > 0);
+	atomic_dec (&chan->n_frags);
+
+	/* we are at a block boundary, there is no fragment data */
+	chan->slop_len = 0;
+
+	/* if SGD has not yet been started, start it */
+	via_chan_maybe_start (chan);
+
+	DPRINTK ("Flushed block %u, sw_ptr now %u, n_frags now %d\n",
+		n, chan->sw_ptr, atomic_read (&chan->n_frags));
+
+	DPRINTK ("regs==S=%02X C=%02X TP=%02X BP=%08X RT=%08X SG=%08X CC=%08X SS=%08X\n",
+		 inb (card->baseaddr + 0x00),
+		 inb (card->baseaddr + 0x01),
+		 inb (card->baseaddr + 0x02),
+		 inl (card->baseaddr + 0x04),
+		 inl (card->baseaddr + 0x08),
+		 inl (card->baseaddr + 0x0C),
+		 inl (card->baseaddr + 0x80),
+		 inl (card->baseaddr + 0x84));
+
+	if (count > 0)
+		goto handle_one_block;
+
+out:
+	if (userbuf - orig_userbuf)
+		return userbuf - orig_userbuf;
+	else
+		return ret;
+}
+
+
+static ssize_t via_dsp_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
+{
+	struct via_info *card;
+	ssize_t rc;
+	int nonblock = (file->f_flags & O_NONBLOCK);
+
+	DPRINTK ("ENTER, file=%p, buffer=%p, count=%u, ppos=%lu\n",
+		 file, buffer, count, ppos ? ((unsigned long)*ppos) : 0);
+
+	assert (file != NULL);
+	card = file->private_data;
+	assert (card != NULL);
+
+	rc = via_syscall_down (card, nonblock);
+	if (rc) goto out;
+
+	if (card->ch_out.is_mapped) {
+		rc = -ENXIO;
+		goto out_up;
+	}
+
+	via_chan_set_buffering(card, &card->ch_out, -1);
+	rc = via_chan_buffer_init (card, &card->ch_out);
+
+	if (rc)
+		goto out_up;
+
+	rc = via_dsp_do_write (card, buffer, count, nonblock);
+
+out_up:
+	up (&card->syscall_sem);
+out:
+	DPRINTK ("EXIT, returning %ld\n",(long) rc);
+	return rc;
+}
+
+
+static unsigned int via_dsp_poll(struct file *file, struct poll_table_struct *wait)
+{
+	struct via_info *card;
+	struct via_channel *chan;
+	unsigned int mask = 0;
+
+	DPRINTK ("ENTER\n");
+
+	assert (file != NULL);
+	card = file->private_data;
+	assert (card != NULL);
+
+	if (file->f_mode & FMODE_READ) {
+		chan = &card->ch_in;
+		if (sg_active (chan->iobase))
+	                poll_wait(file, &chan->wait, wait);
+		if (atomic_read (&chan->n_frags) > 0)
+			mask |= POLLIN | POLLRDNORM;
+	}
+
+	if (file->f_mode & FMODE_WRITE) {
+		chan = &card->ch_out;
+		if (sg_active (chan->iobase))
+	                poll_wait(file, &chan->wait, wait);
+		if (atomic_read (&chan->n_frags) > 0)
+			mask |= POLLOUT | POLLWRNORM;
+	}
+
+	DPRINTK ("EXIT, returning %u\n", mask);
+	return mask;
+}
+
+
+/**
+ *	via_dsp_drain_playback - sleep until all playback samples are flushed
+ *	@card: Private info for specified board
+ *	@chan: Channel to drain
+ *	@nonblock: boolean, non-zero if O_NONBLOCK is set
+ *
+ *	Sleeps until all playback has been flushed to the audio
+ *	hardware.
+ *
+ *	Locking: inside card->syscall_sem
+ */
+
+static int via_dsp_drain_playback (struct via_info *card,
+				   struct via_channel *chan, int nonblock)
+{
+        DECLARE_WAITQUEUE(wait, current);
+	int ret = 0;
+
+	DPRINTK ("ENTER, nonblock = %d\n", nonblock);
+
+	if (chan->slop_len > 0)
+		via_chan_flush_frag (chan);
+
+	if (atomic_read (&chan->n_frags) == chan->frag_number)
+		goto out;
+
+	via_chan_maybe_start (chan);
+
+	add_wait_queue(&chan->wait, &wait);
+	for (;;) {
+		DPRINTK ("FRAGS %d FRAGNUM %d\n", atomic_read(&chan->n_frags), chan->frag_number);
+		__set_current_state(TASK_INTERRUPTIBLE);
+		if (atomic_read (&chan->n_frags) >= chan->frag_number)
+			break;
+
+		if (nonblock) {
+			DPRINTK ("EXIT, returning -EAGAIN\n");
+			ret = -EAGAIN;
+			break;
+		}
+
+#ifdef VIA_DEBUG
+		{
+		u8 r40,r41,r42,r43,r44,r48;
+		pci_read_config_byte (card->pdev, 0x40, &r40);
+		pci_read_config_byte (card->pdev, 0x41, &r41);
+		pci_read_config_byte (card->pdev, 0x42, &r42);
+		pci_read_config_byte (card->pdev, 0x43, &r43);
+		pci_read_config_byte (card->pdev, 0x44, &r44);
+		pci_read_config_byte (card->pdev, 0x48, &r48);
+		DPRINTK ("PCI config: %02X %02X %02X %02X %02X %02X\n",
+			r40,r41,r42,r43,r44,r48);
+
+		DPRINTK ("regs==%02X %02X %02X %08X %08X %08X %08X\n",
+			 inb (card->baseaddr + 0x00),
+			 inb (card->baseaddr + 0x01),
+			 inb (card->baseaddr + 0x02),
+			 inl (card->baseaddr + 0x04),
+			 inl (card->baseaddr + 0x0C),
+			 inl (card->baseaddr + 0x80),
+			 inl (card->baseaddr + 0x84));
+		}
+
+		if (!chan->is_active)
+			printk (KERN_ERR "sleeping but not active\n");
+#endif
+
+		up(&card->syscall_sem);
+
+		DPRINTK ("sleeping, nbufs=%d\n", atomic_read (&chan->n_frags));
+		schedule();
+
+		if ((ret = via_syscall_down (card, nonblock)))
+			break;
+
+		if (signal_pending (current)) {
+			DPRINTK ("EXIT, returning -ERESTARTSYS\n");
+			ret = -ERESTARTSYS;
+			break;
+		}
+	}
+	set_current_state(TASK_RUNNING);
+	remove_wait_queue(&chan->wait, &wait);
+
+#ifdef VIA_DEBUG
+	{
+		u8 r40,r41,r42,r43,r44,r48;
+		pci_read_config_byte (card->pdev, 0x40, &r40);
+		pci_read_config_byte (card->pdev, 0x41, &r41);
+		pci_read_config_byte (card->pdev, 0x42, &r42);
+		pci_read_config_byte (card->pdev, 0x43, &r43);
+		pci_read_config_byte (card->pdev, 0x44, &r44);
+		pci_read_config_byte (card->pdev, 0x48, &r48);
+		DPRINTK ("PCI config: %02X %02X %02X %02X %02X %02X\n",
+			r40,r41,r42,r43,r44,r48);
+
+		DPRINTK ("regs==%02X %02X %02X %08X %08X %08X %08X\n",
+			 inb (card->baseaddr + 0x00),
+			 inb (card->baseaddr + 0x01),
+			 inb (card->baseaddr + 0x02),
+			 inl (card->baseaddr + 0x04),
+			 inl (card->baseaddr + 0x0C),
+			 inl (card->baseaddr + 0x80),
+			 inl (card->baseaddr + 0x84));
+
+		DPRINTK ("final nbufs=%d\n", atomic_read (&chan->n_frags));
+	}
+#endif
+
+out:
+	DPRINTK ("EXIT, returning %d\n", ret);
+	return ret;
+}
+
+
+/**
+ *	via_dsp_ioctl_space - get information about channel buffering
+ *	@card: Private info for specified board
+ *	@chan: pointer to channel-specific info
+ *	@arg: user buffer for returned information
+ *
+ *	Handles SNDCTL_DSP_GETISPACE and SNDCTL_DSP_GETOSPACE.
+ *
+ *	Locking: inside card->syscall_sem
+ */
+
+static int via_dsp_ioctl_space (struct via_info *card,
+				struct via_channel *chan,
+				void __user *arg)
+{
+	audio_buf_info info;
+
+	via_chan_set_buffering(card, chan, -1);
+
+	info.fragstotal = chan->frag_number;
+	info.fragsize = chan->frag_size;
+
+	/* number of full fragments we can read/write without blocking */
+	info.fragments = atomic_read (&chan->n_frags);
+
+	if ((chan->slop_len % chan->frag_size > 0) && (info.fragments > 0))
+		info.fragments--;
+
+	/* number of bytes that can be read or written immediately
+	 * without blocking.
+	 */
+	info.bytes = (info.fragments * chan->frag_size);
+	if (chan->slop_len % chan->frag_size > 0)
+		info.bytes += chan->frag_size - (chan->slop_len % chan->frag_size);
+
+	DPRINTK ("EXIT, returning fragstotal=%d, fragsize=%d, fragments=%d, bytes=%d\n",
+		info.fragstotal,
+		info.fragsize,
+		info.fragments,
+		info.bytes);
+
+	return copy_to_user (arg, &info, sizeof (info))?-EFAULT:0;
+}
+
+
+/**
+ *	via_dsp_ioctl_ptr - get information about hardware buffer ptr
+ *	@card: Private info for specified board
+ *	@chan: pointer to channel-specific info
+ *	@arg: user buffer for returned information
+ *
+ *	Handles SNDCTL_DSP_GETIPTR and SNDCTL_DSP_GETOPTR.
+ *
+ *	Locking: inside card->syscall_sem
+ */
+
+static int via_dsp_ioctl_ptr (struct via_info *card,
+				struct via_channel *chan,
+				void __user *arg)
+{
+	count_info info;
+
+	spin_lock_irq (&card->lock);
+
+	info.bytes = chan->bytes;
+	info.blocks = chan->n_irqs;
+	chan->n_irqs = 0;
+
+	spin_unlock_irq (&card->lock);
+
+	if (chan->is_active) {
+		unsigned long extra;
+		info.ptr = atomic_read (&chan->hw_ptr) * chan->frag_size;
+		extra = chan->frag_size - via_sg_offset(chan);
+		info.ptr += extra;
+		info.bytes += extra;
+	} else {
+		info.ptr = 0;
+	}
+
+	DPRINTK ("EXIT, returning bytes=%d, blocks=%d, ptr=%d\n",
+		info.bytes,
+		info.blocks,
+		info.ptr);
+
+	return copy_to_user (arg, &info, sizeof (info))?-EFAULT:0;
+}
+
+
+static int via_dsp_ioctl_trigger (struct via_channel *chan, int val)
+{
+	int enable, do_something;
+
+	if (chan->is_record)
+		enable = (val & PCM_ENABLE_INPUT);
+	else
+		enable = (val & PCM_ENABLE_OUTPUT);
+
+	if (!chan->is_enabled && enable) {
+		do_something = 1;
+	} else if (chan->is_enabled && !enable) {
+		do_something = -1;
+	} else {
+		do_something = 0;
+	}
+
+	DPRINTK ("enable=%d, do_something=%d\n",
+		 enable, do_something);
+
+	if (chan->is_active && do_something)
+		return -EINVAL;
+
+	if (do_something == 1) {
+		chan->is_enabled = 1;
+		via_chan_maybe_start (chan);
+		DPRINTK ("Triggering input\n");
+	}
+
+	else if (do_something == -1) {
+		chan->is_enabled = 0;
+		DPRINTK ("Setup input trigger\n");
+	}
+
+	return 0;
+}
+
+
+static int via_dsp_ioctl (struct inode *inode, struct file *file,
+			  unsigned int cmd, unsigned long arg)
+{
+	int rc, rd=0, wr=0, val=0;
+	struct via_info *card;
+	struct via_channel *chan;
+	int nonblock = (file->f_flags & O_NONBLOCK);
+	int __user *ip = (int __user *)arg;
+	void __user *p = (void __user *)arg;
+
+	assert (file != NULL);
+	card = file->private_data;
+	assert (card != NULL);
+
+	if (file->f_mode & FMODE_WRITE)
+		wr = 1;
+	if (file->f_mode & FMODE_READ)
+		rd = 1;
+
+	rc = via_syscall_down (card, nonblock);
+	if (rc)
+		return rc;
+	rc = -EINVAL;
+
+	switch (cmd) {
+
+	/* OSS API version.  XXX unverified */
+	case OSS_GETVERSION:
+		DPRINTK ("ioctl OSS_GETVERSION, EXIT, returning SOUND_VERSION\n");
+		rc = put_user (SOUND_VERSION, ip);
+		break;
+
+	/* list of supported PCM data formats */
+	case SNDCTL_DSP_GETFMTS:
+		DPRINTK ("DSP_GETFMTS, EXIT, returning AFMT U8|S16_LE\n");
+                rc = put_user (AFMT_U8 | AFMT_S16_LE, ip);
+		break;
+
+	/* query or set current channel's PCM data format */
+	case SNDCTL_DSP_SETFMT:
+		if (get_user(val, ip)) {
+			rc = -EFAULT;
+			break;
+		}
+		DPRINTK ("DSP_SETFMT, val==%d\n", val);
+		if (val != AFMT_QUERY) {
+			rc = 0;
+
+			if (rd)
+				rc = via_chan_set_fmt (card, &card->ch_in, val);
+
+			if (rc >= 0 && wr)
+				rc = via_chan_set_fmt (card, &card->ch_out, val);
+
+			if (rc < 0)
+				break;
+
+			val = rc;
+		} else {
+			if ((rd && (card->ch_in.pcm_fmt & VIA_PCM_FMT_16BIT)) ||
+			    (wr && (card->ch_out.pcm_fmt & VIA_PCM_FMT_16BIT)))
+				val = AFMT_S16_LE;
+			else
+				val = AFMT_U8;
+		}
+		DPRINTK ("SETFMT EXIT, returning %d\n", val);
+                rc = put_user (val, ip);
+		break;
+
+	/* query or set number of channels (1=mono, 2=stereo, 4/6 for multichannel) */
+        case SNDCTL_DSP_CHANNELS:
+		if (get_user(val, ip)) {
+			rc = -EFAULT;
+			break;
+		}
+		DPRINTK ("DSP_CHANNELS, val==%d\n", val);
+		if (val != 0) {
+			rc = 0;
+
+			if (rd)
+				rc = via_chan_set_stereo (card, &card->ch_in, val);
+
+			if (rc >= 0 && wr)
+				rc = via_chan_set_stereo (card, &card->ch_out, val);
+
+			if (rc < 0)
+				break;
+
+			val = rc;
+		} else {
+			if (rd)
+				val = card->ch_in.channels;
+			else
+				val = card->ch_out.channels;
+		}
+		DPRINTK ("CHANNELS EXIT, returning %d\n", val);
+                rc = put_user (val, ip);
+		break;
+
+	/* enable (val is not zero) or disable (val == 0) stereo */
+        case SNDCTL_DSP_STEREO:
+		if (get_user(val, ip)) {
+			rc = -EFAULT;
+			break;
+		}
+		DPRINTK ("DSP_STEREO, val==%d\n", val);
+		rc = 0;
+
+		if (rd)
+			rc = via_chan_set_stereo (card, &card->ch_in, val ? 2 : 1);
+		if (rc >= 0 && wr)
+			rc = via_chan_set_stereo (card, &card->ch_out, val ? 2 : 1);
+
+		if (rc < 0)
+			break;
+
+		val = rc - 1;
+
+		DPRINTK ("STEREO EXIT, returning %d\n", val);
+		rc = put_user(val, ip);
+		break;
+
+	/* query or set sampling rate */
+        case SNDCTL_DSP_SPEED:
+		if (get_user(val, ip)) {
+			rc = -EFAULT;
+			break;
+		}
+		DPRINTK ("DSP_SPEED, val==%d\n", val);
+		if (val < 0) {
+			rc = -EINVAL;
+			break;
+		}
+		if (val > 0) {
+			rc = 0;
+
+			if (rd)
+				rc = via_chan_set_speed (card, &card->ch_in, val);
+			if (rc >= 0 && wr)
+				rc = via_chan_set_speed (card, &card->ch_out, val);
+
+			if (rc < 0)
+				break;
+
+			val = rc;
+		} else {
+			if (rd)
+				val = card->ch_in.rate;
+			else if (wr)
+				val = card->ch_out.rate;
+			else
+				val = 0;
+		}
+		DPRINTK ("SPEED EXIT, returning %d\n", val);
+                rc = put_user (val, ip);
+		break;
+
+	/* wait until all buffers have been played, and then stop device */
+	case SNDCTL_DSP_SYNC:
+		DPRINTK ("DSP_SYNC\n");
+		rc = 0;
+		if (wr) {
+			DPRINTK ("SYNC EXIT (after calling via_dsp_drain_playback)\n");
+			rc = via_dsp_drain_playback (card, &card->ch_out, nonblock);
+		}
+		break;
+
+	/* stop recording/playback immediately */
+        case SNDCTL_DSP_RESET:
+		DPRINTK ("DSP_RESET\n");
+		if (rd) {
+			via_chan_clear (card, &card->ch_in);
+			card->ch_in.frag_number = 0;
+			card->ch_in.frag_size = 0;
+			atomic_set(&card->ch_in.n_frags, 0);
+		}
+
+		if (wr) {
+			via_chan_clear (card, &card->ch_out);
+			card->ch_out.frag_number = 0;
+			card->ch_out.frag_size = 0;
+			atomic_set(&card->ch_out.n_frags, 0);
+		}
+
+		rc = 0;
+		break;
+
+	case SNDCTL_DSP_NONBLOCK:
+		file->f_flags |= O_NONBLOCK;
+		rc = 0;
+		break;
+
+	/* obtain bitmask of device capabilities, such as mmap, full duplex, etc. */
+	case SNDCTL_DSP_GETCAPS:
+		DPRINTK ("DSP_GETCAPS\n");
+		rc = put_user(VIA_DSP_CAP, ip);
+		break;
+
+	/* obtain buffer fragment size */
+	case SNDCTL_DSP_GETBLKSIZE:
+		DPRINTK ("DSP_GETBLKSIZE\n");
+
+		if (rd) {
+			via_chan_set_buffering(card, &card->ch_in, -1);
+			rc = put_user(card->ch_in.frag_size, ip);
+		} else if (wr) {
+			via_chan_set_buffering(card, &card->ch_out, -1);
+			rc = put_user(card->ch_out.frag_size, ip);
+		}
+		break;
+
+	/* obtain information about input buffering */
+	case SNDCTL_DSP_GETISPACE:
+		DPRINTK ("DSP_GETISPACE\n");
+		if (rd)
+			rc = via_dsp_ioctl_space (card, &card->ch_in, p);
+		break;
+
+	/* obtain information about output buffering */
+	case SNDCTL_DSP_GETOSPACE:
+		DPRINTK ("DSP_GETOSPACE\n");
+		if (wr)
+			rc = via_dsp_ioctl_space (card, &card->ch_out, p);
+		break;
+
+	/* obtain information about input hardware pointer */
+	case SNDCTL_DSP_GETIPTR:
+		DPRINTK ("DSP_GETIPTR\n");
+		if (rd)
+			rc = via_dsp_ioctl_ptr (card, &card->ch_in, p);
+		break;
+
+	/* obtain information about output hardware pointer */
+	case SNDCTL_DSP_GETOPTR:
+		DPRINTK ("DSP_GETOPTR\n");
+		if (wr)
+			rc = via_dsp_ioctl_ptr (card, &card->ch_out, p);
+		break;
+
+	/* return number of bytes remaining to be played by DMA engine */
+	case SNDCTL_DSP_GETODELAY:
+		{
+		DPRINTK ("DSP_GETODELAY\n");
+
+		chan = &card->ch_out;
+
+		if (!wr)
+			break;
+
+		if (chan->is_active) {
+
+			val = chan->frag_number - atomic_read (&chan->n_frags);
+
+			assert(val >= 0);
+				
+			if (val > 0) {
+				val *= chan->frag_size;
+				val -= chan->frag_size - via_sg_offset(chan);
+			}
+			val += chan->slop_len % chan->frag_size;
+		} else
+			val = 0;
+
+		assert (val <= (chan->frag_size * chan->frag_number));
+
+		DPRINTK ("GETODELAY EXIT, val = %d bytes\n", val);
+                rc = put_user (val, ip);
+		break;
+		}
+
+	/* handle the quick-start of a channel,
+	 * or the notification that a quick-start will
+	 * occur in the future
+	 */
+	case SNDCTL_DSP_SETTRIGGER:
+		if (get_user(val, ip)) {
+			rc = -EFAULT;
+			break;
+		}
+		DPRINTK ("DSP_SETTRIGGER, rd=%d, wr=%d, act=%d/%d, en=%d/%d\n",
+			rd, wr, card->ch_in.is_active, card->ch_out.is_active,
+			card->ch_in.is_enabled, card->ch_out.is_enabled);
+
+		rc = 0;
+
+		if (rd)
+			rc = via_dsp_ioctl_trigger (&card->ch_in, val);
+
+		if (!rc && wr)
+			rc = via_dsp_ioctl_trigger (&card->ch_out, val);
+
+		break;
+
+	case SNDCTL_DSP_GETTRIGGER:
+		val = 0;
+		if ((file->f_mode & FMODE_READ) && card->ch_in.is_enabled)
+			val |= PCM_ENABLE_INPUT;
+		if ((file->f_mode & FMODE_WRITE) && card->ch_out.is_enabled)
+			val |= PCM_ENABLE_OUTPUT;
+		rc = put_user(val, ip);
+		break;
+
+	/* Enable full duplex.  Since we do this as soon as we are opened
+	 * with O_RDWR, this is mainly a no-op that always returns success.
+	 */
+	case SNDCTL_DSP_SETDUPLEX:
+		DPRINTK ("DSP_SETDUPLEX\n");
+		if (!rd || !wr)
+			break;
+		rc = 0;
+		break;
+
+	/* set fragment size.  implemented as a successful no-op for now */
+	case SNDCTL_DSP_SETFRAGMENT:
+		if (get_user(val, ip)) {
+			rc = -EFAULT;
+			break;
+		}
+		DPRINTK ("DSP_SETFRAGMENT, val==%d\n", val);
+
+		if (rd)
+			rc = via_chan_set_buffering(card, &card->ch_in, val);
+
+		if (wr)
+			rc = via_chan_set_buffering(card, &card->ch_out, val);
+
+		DPRINTK ("SNDCTL_DSP_SETFRAGMENT (fragshift==0x%04X (%d), maxfrags==0x%04X (%d))\n",
+			 val & 0xFFFF,
+			 val & 0xFFFF,
+			 (val >> 16) & 0xFFFF,
+			 (val >> 16) & 0xFFFF);
+
+		rc = 0;
+		break;
+
+	/* inform device of an upcoming pause in input (or output). */
+	case SNDCTL_DSP_POST:
+		DPRINTK ("DSP_POST\n");
+		if (wr) {
+			if (card->ch_out.slop_len > 0)
+				via_chan_flush_frag (&card->ch_out);
+			via_chan_maybe_start (&card->ch_out);
+		}
+
+		rc = 0;
+		break;
+
+	/* not implemented */
+	default:
+		DPRINTK ("unhandled ioctl, cmd==%u, arg==%p\n",
+			 cmd, p);
+		break;
+	}
+
+	up (&card->syscall_sem);
+	DPRINTK ("EXIT, returning %d\n", rc);
+	return rc;
+}
+
+
+static int via_dsp_open (struct inode *inode, struct file *file)
+{
+	int minor = iminor(inode);
+	struct via_info *card;
+	struct pci_dev *pdev = NULL;
+	struct via_channel *chan;
+	struct pci_driver *drvr;
+	int nonblock = (file->f_flags & O_NONBLOCK);
+
+	DPRINTK ("ENTER, minor=%d, file->f_mode=0x%x\n", minor, file->f_mode);
+
+	if (!(file->f_mode & (FMODE_READ | FMODE_WRITE))) {
+		DPRINTK ("EXIT, returning -EINVAL\n");
+		return -EINVAL;
+	}
+
+	card = NULL;
+	while ((pdev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pdev)) != NULL) {
+		drvr = pci_dev_driver (pdev);
+		if (drvr == &via_driver) {
+			assert (pci_get_drvdata (pdev) != NULL);
+
+			card = pci_get_drvdata (pdev);
+			DPRINTK ("dev_dsp = %d, minor = %d, assn = %d\n",
+				 card->dev_dsp, minor,
+				 (card->dev_dsp ^ minor) & ~0xf);
+
+			if (((card->dev_dsp ^ minor) & ~0xf) == 0)
+				goto match;
+		}
+	}
+
+	DPRINTK ("no matching %s found\n", card ? "minor" : "driver");
+	return -ENODEV;
+
+match:
+	if (nonblock) {
+		if (down_trylock (&card->open_sem)) {
+			DPRINTK ("EXIT, returning -EAGAIN\n");
+			return -EAGAIN;
+		}
+	} else {
+		if (down_interruptible (&card->open_sem)) {
+			DPRINTK ("EXIT, returning -ERESTARTSYS\n");
+			return -ERESTARTSYS;
+		}
+	}
+
+	file->private_data = card;
+	DPRINTK ("file->f_mode == 0x%x\n", file->f_mode);
+
+	/* handle input from analog source */
+	if (file->f_mode & FMODE_READ) {
+		chan = &card->ch_in;
+
+		via_chan_init (card, chan);
+
+		/* why is this forced to 16-bit stereo in all drivers? */
+		chan->pcm_fmt = VIA_PCM_FMT_16BIT | VIA_PCM_FMT_STEREO;
+		chan->channels = 2;
+
+		// TO DO - use FIFO: via_capture_fifo(card, 1);
+		via_chan_pcm_fmt (chan, 0);
+		via_set_rate (card->ac97, chan, 44100);
+	}
+
+	/* handle output to analog source */
+	if (file->f_mode & FMODE_WRITE) {
+		chan = &card->ch_out;
+
+		via_chan_init (card, chan);
+
+		if (file->f_mode & FMODE_READ) {
+			/* if in duplex mode make the recording and playback channels
+			   have the same settings */
+			chan->pcm_fmt = VIA_PCM_FMT_16BIT | VIA_PCM_FMT_STEREO;
+			chan->channels = 2;
+			via_chan_pcm_fmt (chan, 0);
+                        via_set_rate (card->ac97, chan, 44100);
+		} else {
+			 if ((minor & 0xf) == SND_DEV_DSP16) {
+				chan->pcm_fmt = VIA_PCM_FMT_16BIT;
+				via_chan_pcm_fmt (chan, 0);
+				via_set_rate (card->ac97, chan, 44100);
+			} else {
+				via_chan_pcm_fmt (chan, 1);
+				via_set_rate (card->ac97, chan, 8000);
+			}
+		}
+	}
+
+	DPRINTK ("EXIT, returning 0\n");
+	return nonseekable_open(inode, file);
+}
+
+
+static int via_dsp_release(struct inode *inode, struct file *file)
+{
+	struct via_info *card;
+	int nonblock = (file->f_flags & O_NONBLOCK);
+	int rc;
+
+	DPRINTK ("ENTER\n");
+
+	assert (file != NULL);
+	card = file->private_data;
+	assert (card != NULL);
+
+	rc = via_syscall_down (card, nonblock);
+	if (rc) {
+		DPRINTK ("EXIT (syscall_down error), rc=%d\n", rc);
+		return rc;
+	}
+
+	if (file->f_mode & FMODE_WRITE) {
+		rc = via_dsp_drain_playback (card, &card->ch_out, nonblock);
+		if (rc && rc != -ERESTARTSYS)	/* Nobody needs to know about ^C */
+			printk (KERN_DEBUG "via_audio: ignoring drain playback error %d\n", rc);
+
+		via_chan_free (card, &card->ch_out);
+		via_chan_buffer_free(card, &card->ch_out);
+	}
+
+	if (file->f_mode & FMODE_READ) {
+		via_chan_free (card, &card->ch_in);
+		via_chan_buffer_free (card, &card->ch_in);
+	}
+
+	up (&card->syscall_sem);
+	up (&card->open_sem);
+
+	DPRINTK ("EXIT, returning 0\n");
+	return 0;
+}
+
+
+/****************************************************************
+ *
+ * Chip setup and kernel registration
+ *
+ *
+ */
+
+static int __devinit via_init_one (struct pci_dev *pdev, const struct pci_device_id *id)
+{
+#ifdef CONFIG_MIDI_VIA82CXXX
+	u8 r42;
+#endif
+	int rc;
+	struct via_info *card;
+	static int printed_version;
+
+	DPRINTK ("ENTER\n");
+
+	if (printed_version++ == 0)
+		printk (KERN_INFO "Via 686a/8233/8235 audio driver " VIA_VERSION "\n");
+
+	rc = pci_enable_device (pdev);
+	if (rc)
+		goto err_out;
+
+	rc = pci_request_regions (pdev, "via82cxxx_audio");
+	if (rc)
+		goto err_out_disable;
+
+	rc = pci_set_dma_mask(pdev, 0xffffffffULL);
+	if (rc)
+		goto err_out_res;
+	rc = pci_set_consistent_dma_mask(pdev, 0xffffffffULL);
+	if (rc)
+		goto err_out_res;
+
+	card = kmalloc (sizeof (*card), GFP_KERNEL);
+	if (!card) {
+		printk (KERN_ERR PFX "out of memory, aborting\n");
+		rc = -ENOMEM;
+		goto err_out_res;
+	}
+
+	pci_set_drvdata (pdev, card);
+
+	memset (card, 0, sizeof (*card));
+	card->pdev = pdev;
+	card->baseaddr = pci_resource_start (pdev, 0);
+	card->card_num = via_num_cards++;
+	spin_lock_init (&card->lock);
+	spin_lock_init (&card->ac97_lock);
+	init_MUTEX (&card->syscall_sem);
+	init_MUTEX (&card->open_sem);
+
+	/* we must init these now, in case the intr handler needs them */
+	via_chan_init_defaults (card, &card->ch_out);
+	via_chan_init_defaults (card, &card->ch_in);
+	via_chan_init_defaults (card, &card->ch_fm);
+
+	/* if BAR 2 is present, chip is Rev H or later,
+	 * which means it has a few extra features */
+	if (pci_resource_start (pdev, 2) > 0)
+		card->rev_h = 1;
+		
+	/* Overkill for now, but more flexible done right */
+	
+	card->intmask = id->driver_data;
+	card->legacy = !card->intmask;
+	card->sixchannel = id->driver_data;
+	
+	if(card->sixchannel)
+		printk(KERN_INFO PFX "Six channel audio available\n");
+	if (pdev->irq < 1) {
+		printk (KERN_ERR PFX "invalid PCI IRQ %d, aborting\n", pdev->irq);
+		rc = -ENODEV;
+		goto err_out_kfree;
+	}
+
+	if (!(pci_resource_flags (pdev, 0) & IORESOURCE_IO)) {
+		printk (KERN_ERR PFX "unable to locate I/O resources, aborting\n");
+		rc = -ENODEV;
+		goto err_out_kfree;
+	}
+
+	pci_set_master(pdev);
+	
+	/*
+	 * init AC97 mixer and codec
+	 */
+	rc = via_ac97_init (card);
+	if (rc) {
+		printk (KERN_ERR PFX "AC97 init failed, aborting\n");
+		goto err_out_kfree;
+	}
+
+	/*
+	 * init DSP device
+	 */
+	rc = via_dsp_init (card);
+	if (rc) {
+		printk (KERN_ERR PFX "DSP device init failed, aborting\n");
+		goto err_out_have_mixer;
+	}
+
+	/*
+	 * init and turn on interrupts, as the last thing we do
+	 */
+	rc = via_interrupt_init (card);
+	if (rc) {
+		printk (KERN_ERR PFX "interrupt init failed, aborting\n");
+		goto err_out_have_dsp;
+	}
+
+	printk (KERN_INFO PFX "board #%d at 0x%04lX, IRQ %d\n",
+		card->card_num + 1, card->baseaddr, pdev->irq);
+
+#ifdef CONFIG_MIDI_VIA82CXXX
+	/* Disable by default */
+	card->midi_info.io_base = 0;
+
+	if(card->legacy)
+	{
+		pci_read_config_byte (pdev, 0x42, &r42);
+		/* Disable MIDI interrupt */
+		pci_write_config_byte (pdev, 0x42, r42 | VIA_CR42_MIDI_IRQMASK);
+		if (r42 & VIA_CR42_MIDI_ENABLE)
+		{
+			if (r42 & VIA_CR42_MIDI_PNP) /* Address selected by iobase 2 - not tested */
+				card->midi_info.io_base = pci_resource_start (pdev, 2);
+			else /* Address selected by byte 0x43 */
+			{
+				u8 r43;
+				pci_read_config_byte (pdev, 0x43, &r43);
+				card->midi_info.io_base = 0x300 + ((r43 & 0x0c) << 2);
+			}
+
+			card->midi_info.irq = -pdev->irq;
+			if (probe_uart401(& card->midi_info, THIS_MODULE))
+			{
+				card->midi_devc=midi_devs[card->midi_info.slots[4]]->devc;
+				pci_write_config_byte(pdev, 0x42, r42 & ~VIA_CR42_MIDI_IRQMASK);
+				printk("Enabled Via MIDI\n");
+			}
+		}
+	}
+#endif
+
+	DPRINTK ("EXIT, returning 0\n");
+	return 0;
+
+err_out_have_dsp:
+	via_dsp_cleanup (card);
+
+err_out_have_mixer:
+	via_ac97_cleanup (card);
+
+err_out_kfree:
+#ifndef VIA_NDEBUG
+	memset (card, 0xAB, sizeof (*card)); /* poison memory */
+#endif
+	kfree (card);
+
+err_out_res:
+	pci_release_regions (pdev);
+
+err_out_disable:
+	pci_disable_device (pdev);
+
+err_out:
+	pci_set_drvdata (pdev, NULL);
+	DPRINTK ("EXIT - returning %d\n", rc);
+	return rc;
+}
+
+
+static void __devexit via_remove_one (struct pci_dev *pdev)
+{
+	struct via_info *card;
+
+	DPRINTK ("ENTER\n");
+
+	assert (pdev != NULL);
+	card = pci_get_drvdata (pdev);
+	assert (card != NULL);
+
+#ifdef CONFIG_MIDI_VIA82CXXX
+	if (card->midi_info.io_base)
+		unload_uart401(&card->midi_info);
+#endif
+
+	free_irq (card->pdev->irq, card);
+	via_dsp_cleanup (card);
+	via_ac97_cleanup (card);
+
+#ifndef VIA_NDEBUG
+	memset (card, 0xAB, sizeof (*card)); /* poison memory */
+#endif
+	kfree (card);
+
+	pci_set_drvdata (pdev, NULL);
+
+	pci_release_regions (pdev);
+	pci_disable_device (pdev);
+	pci_set_power_state (pdev, 3); /* ...zzzzzz */
+
+	DPRINTK ("EXIT\n");
+	return;
+}
+
+
+/****************************************************************
+ *
+ * Driver initialization and cleanup
+ *
+ *
+ */
+
+static int __init init_via82cxxx_audio(void)
+{
+	int rc;
+
+	DPRINTK ("ENTER\n");
+
+	rc = pci_register_driver (&via_driver);
+	if (rc) {
+		DPRINTK ("EXIT, returning %d\n", rc);
+		return rc;
+	}
+
+	DPRINTK ("EXIT, returning 0\n");
+	return 0;
+}
+
+
+static void __exit cleanup_via82cxxx_audio(void)
+{
+	DPRINTK ("ENTER\n");
+
+	pci_unregister_driver (&via_driver);
+
+	DPRINTK ("EXIT\n");
+}
+
+
+module_init(init_via82cxxx_audio);
+module_exit(cleanup_via82cxxx_audio);
+
+MODULE_AUTHOR("Jeff Garzik");
+MODULE_DESCRIPTION("DSP audio and mixer driver for Via 82Cxxx audio devices");
+MODULE_LICENSE("GPL");
+