Linux-2.6.12-rc2v2.6.12-rc2

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

Let it rip!

1 files changed, 2497 insertions, 0 deletions

diff --git a/sound/oss/esssolo1.c b/sound/oss/esssolo1.c
new file mode 100644
index 00000000000..6b3b9a99579
--- /dev/null
+++ b/sound/oss/esssolo1.c
@@ -0,0 +1,2497 @@
+/****************************************************************************/
+
+/*
+ *      esssolo1.c  --  ESS Technology Solo1 (ES1946) audio driver.
+ *
+ *      Copyright (C) 1998-2001, 2003  Thomas Sailer (t.sailer@alumni.ethz.ch)
+ *
+ *      This program is free software; you can redistribute it and/or modify
+ *      it under the terms of the GNU General Public License as published by
+ *      the Free Software Foundation; either version 2 of the License, or
+ *      (at your option) any later version.
+ *
+ *      This program is distributed in the hope that it will be useful,
+ *      but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *      GNU General Public License for more details.
+ *
+ *      You should have received a copy of the GNU General Public License
+ *      along with this program; if not, write to the Free Software
+ *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Module command line parameters:
+ *   none so far
+ *
+ *  Supported devices:
+ *  /dev/dsp    standard /dev/dsp device, (mostly) OSS compatible
+ *  /dev/mixer  standard /dev/mixer device, (mostly) OSS compatible
+ *  /dev/midi   simple MIDI UART interface, no ioctl
+ *
+ *  Revision history
+ *    10.11.1998   0.1   Initial release (without any hardware)
+ *    22.03.1999   0.2   cinfo.blocks should be reset after GETxPTR ioctl.
+ *                       reported by Johan Maes <joma@telindus.be>
+ *                       return EAGAIN instead of EBUSY when O_NONBLOCK
+ *                       read/write cannot be executed
+ *    07.04.1999   0.3   implemented the following ioctl's: SOUND_PCM_READ_RATE, 
+ *                       SOUND_PCM_READ_CHANNELS, SOUND_PCM_READ_BITS; 
+ *                       Alpha fixes reported by Peter Jones <pjones@redhat.com>
+ *    15.06.1999   0.4   Fix bad allocation bug.
+ *                       Thanks to Deti Fliegl <fliegl@in.tum.de>
+ *    28.06.1999   0.5   Add pci_set_master
+ *    12.08.1999   0.6   Fix MIDI UART crashing the driver
+ *                       Changed mixer semantics from OSS documented
+ *                       behaviour to OSS "code behaviour".
+ *                       Recording might actually work now.
+ *                       The real DDMA controller address register is at PCI config
+ *                       0x60, while the register at 0x18 is used as a placeholder
+ *                       register for BIOS address allocation. This register
+ *                       is supposed to be copied into 0x60, according
+ *                       to the Solo1 datasheet. When I do that, I can access
+ *                       the DDMA registers except the mask bit, which
+ *                       is stuck at 1. When I copy the contents of 0x18 +0x10
+ *                       to the DDMA base register, everything seems to work.
+ *                       The fun part is that the Windows Solo1 driver doesn't
+ *                       seem to do these tricks.
+ *                       Bugs remaining: plops and clicks when starting/stopping playback
+ *    31.08.1999   0.7   add spin_lock_init
+ *                       replaced current->state = x with set_current_state(x)
+ *    03.09.1999   0.8   change read semantics for MIDI to match
+ *                       OSS more closely; remove possible wakeup race
+ *    07.10.1999   0.9   Fix initialization; complain if sequencer writes time out
+ *                       Revised resource grabbing for the FM synthesizer
+ *    28.10.1999   0.10  More waitqueue races fixed
+ *    09.12.1999   0.11  Work around stupid Alpha port issue (virt_to_bus(kmalloc(GFP_DMA)) > 16M)
+ *                       Disabling recording on Alpha
+ *    12.01.2000   0.12  Prevent some ioctl's from returning bad count values on underrun/overrun;
+ *                       Tim Janik's BSE (Bedevilled Sound Engine) found this
+ *                       Integrated (aka redid 8-)) APM support patch by Zach Brown
+ *    07.02.2000   0.13  Use pci_alloc_consistent and pci_register_driver
+ *    19.02.2000   0.14  Use pci_dma_supported to determine if recording should be disabled
+ *    13.03.2000   0.15  Reintroduce initialization of a couple of PCI config space registers
+ *    21.11.2000   0.16  Initialize dma buffers in poll, otherwise poll may return a bogus mask
+ *    12.12.2000   0.17  More dma buffer initializations, patch from
+ *                       Tjeerd Mulder <tjeerd.mulder@fujitsu-siemens.com>
+ *    31.01.2001   0.18  Register/Unregister gameport, original patch from
+ *                       Nathaniel Daw <daw@cs.cmu.edu>
+ *                       Fix SETTRIGGER non OSS API conformity
+ *    10.03.2001         provide abs function, prevent picking up a bogus kernel macro
+ *                       for abs. Bug report by Andrew Morton <andrewm@uow.edu.au>
+ *    15.05.2001         pci_enable_device moved, return values in probe cleaned
+ *                       up. Marcus Meissner <mm@caldera.de>
+ *    22.05.2001   0.19  more cleanups, changed PM to PCI 2.4 style, got rid
+ *                       of global list of devices, using pci device data.
+ *                       Marcus Meissner <mm@caldera.de>
+ *    03.01.2003   0.20  open_mode fixes from Georg Acher <acher@in.tum.de>
+ */
+
+/*****************************************************************************/
+      
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/ioport.h>
+#include <linux/sched.h>
+#include <linux/delay.h>
+#include <linux/sound.h>
+#include <linux/slab.h>
+#include <linux/soundcard.h>
+#include <linux/pci.h>
+#include <linux/bitops.h>
+#include <linux/init.h>
+#include <linux/poll.h>
+#include <linux/spinlock.h>
+#include <linux/smp_lock.h>
+#include <linux/gameport.h>
+#include <linux/wait.h>
+
+#include <asm/io.h>
+#include <asm/page.h>
+#include <asm/uaccess.h>
+
+#include "dm.h"
+
+/* --------------------------------------------------------------------- */
+
+#undef OSS_DOCUMENTED_MIXER_SEMANTICS
+
+/* --------------------------------------------------------------------- */
+
+#ifndef PCI_VENDOR_ID_ESS
+#define PCI_VENDOR_ID_ESS         0x125d
+#endif
+#ifndef PCI_DEVICE_ID_ESS_SOLO1
+#define PCI_DEVICE_ID_ESS_SOLO1   0x1969
+#endif
+
+#define SOLO1_MAGIC  ((PCI_VENDOR_ID_ESS<<16)|PCI_DEVICE_ID_ESS_SOLO1)
+
+#define DDMABASE_OFFSET           0    /* chip bug workaround kludge */
+#define DDMABASE_EXTENT           16
+
+#define IOBASE_EXTENT             16
+#define SBBASE_EXTENT             16
+#define VCBASE_EXTENT             (DDMABASE_EXTENT+DDMABASE_OFFSET)
+#define MPUBASE_EXTENT            4
+#define GPBASE_EXTENT             4
+#define GAMEPORT_EXTENT		  4
+
+#define FMSYNTH_EXTENT            4
+
+/* MIDI buffer sizes */
+
+#define MIDIINBUF  256
+#define MIDIOUTBUF 256
+
+#define FMODE_MIDI_SHIFT 3
+#define FMODE_MIDI_READ  (FMODE_READ << FMODE_MIDI_SHIFT)
+#define FMODE_MIDI_WRITE (FMODE_WRITE << FMODE_MIDI_SHIFT)
+
+#define FMODE_DMFM 0x10
+
+static struct pci_driver solo1_driver;
+
+/* --------------------------------------------------------------------- */
+
+struct solo1_state {
+	/* magic */
+	unsigned int magic;
+
+	/* the corresponding pci_dev structure */
+	struct pci_dev *dev;
+
+	/* soundcore stuff */
+	int dev_audio;
+	int dev_mixer;
+	int dev_midi;
+	int dev_dmfm;
+
+	/* hardware resources */
+	unsigned long iobase, sbbase, vcbase, ddmabase, mpubase; /* long for SPARC */
+	unsigned int irq;
+
+	/* mixer registers */
+	struct {
+		unsigned short vol[10];
+		unsigned int recsrc;
+		unsigned int modcnt;
+		unsigned short micpreamp;
+	} mix;
+
+	/* wave stuff */
+	unsigned fmt;
+	unsigned channels;
+	unsigned rate;
+	unsigned char clkdiv;
+	unsigned ena;
+
+	spinlock_t lock;
+	struct semaphore open_sem;
+	mode_t open_mode;
+	wait_queue_head_t open_wait;
+
+	struct dmabuf {
+		void *rawbuf;
+		dma_addr_t dmaaddr;
+		unsigned buforder;
+		unsigned numfrag;
+		unsigned fragshift;
+		unsigned hwptr, swptr;
+		unsigned total_bytes;
+		int count;
+		unsigned error; /* over/underrun */
+		wait_queue_head_t wait;
+		/* redundant, but makes calculations easier */
+		unsigned fragsize;
+		unsigned dmasize;
+		unsigned fragsamples;
+		/* OSS stuff */
+		unsigned mapped:1;
+		unsigned ready:1;
+		unsigned endcleared:1;
+		unsigned enabled:1;
+		unsigned ossfragshift;
+		int ossmaxfrags;
+		unsigned subdivision;
+	} dma_dac, dma_adc;
+
+	/* midi stuff */
+	struct {
+		unsigned ird, iwr, icnt;
+		unsigned ord, owr, ocnt;
+		wait_queue_head_t iwait;
+		wait_queue_head_t owait;
+		struct timer_list timer;
+		unsigned char ibuf[MIDIINBUF];
+		unsigned char obuf[MIDIOUTBUF];
+	} midi;
+
+	struct gameport *gameport;
+};
+
+/* --------------------------------------------------------------------- */
+
+static inline void write_seq(struct solo1_state *s, unsigned char data)
+{
+        int i;
+	unsigned long flags;
+
+	/* the local_irq_save stunt is to send the data within the command window */
+        for (i = 0; i < 0xffff; i++) {
+		local_irq_save(flags);
+                if (!(inb(s->sbbase+0xc) & 0x80)) {
+                        outb(data, s->sbbase+0xc);
+			local_irq_restore(flags);
+                        return;
+                }
+		local_irq_restore(flags);
+	}
+	printk(KERN_ERR "esssolo1: write_seq timeout\n");
+	outb(data, s->sbbase+0xc);
+}
+
+static inline int read_seq(struct solo1_state *s, unsigned char *data)
+{
+        int i;
+
+        if (!data)
+                return 0;
+        for (i = 0; i < 0xffff; i++)
+                if (inb(s->sbbase+0xe) & 0x80) {
+                        *data = inb(s->sbbase+0xa);
+                        return 1;
+                }
+	printk(KERN_ERR "esssolo1: read_seq timeout\n");
+        return 0;
+}
+
+static inline int reset_ctrl(struct solo1_state *s)
+{
+        int i;
+
+        outb(3, s->sbbase+6); /* clear sequencer and FIFO */
+        udelay(10);
+        outb(0, s->sbbase+6);
+        for (i = 0; i < 0xffff; i++)
+                if (inb(s->sbbase+0xe) & 0x80)
+                        if (inb(s->sbbase+0xa) == 0xaa) {
+				write_seq(s, 0xc6); /* enter enhanced mode */
+                                return 1;
+			}
+        return 0;
+}
+
+static void write_ctrl(struct solo1_state *s, unsigned char reg, unsigned char data)
+{
+	write_seq(s, reg);
+	write_seq(s, data);
+}
+
+#if 0 /* unused */
+static unsigned char read_ctrl(struct solo1_state *s, unsigned char reg)
+{
+        unsigned char r;
+
+	write_seq(s, 0xc0);
+	write_seq(s, reg);
+	read_seq(s, &r);
+	return r;
+}
+#endif /* unused */
+
+static void write_mixer(struct solo1_state *s, unsigned char reg, unsigned char data)
+{
+	outb(reg, s->sbbase+4);
+	outb(data, s->sbbase+5);
+}
+
+static unsigned char read_mixer(struct solo1_state *s, unsigned char reg)
+{
+	outb(reg, s->sbbase+4);
+	return inb(s->sbbase+5);
+}
+
+/* --------------------------------------------------------------------- */
+
+static inline unsigned ld2(unsigned int x)
+{
+	unsigned r = 0;
+	
+	if (x >= 0x10000) {
+		x >>= 16;
+		r += 16;
+	}
+	if (x >= 0x100) {
+		x >>= 8;
+		r += 8;
+	}
+	if (x >= 0x10) {
+		x >>= 4;
+		r += 4;
+	}
+	if (x >= 4) {
+		x >>= 2;
+		r += 2;
+	}
+	if (x >= 2)
+		r++;
+	return r;
+}
+
+/* --------------------------------------------------------------------- */
+
+static inline void stop_dac(struct solo1_state *s)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&s->lock, flags);
+	s->ena &= ~FMODE_WRITE;
+	write_mixer(s, 0x78, 0x10);
+	spin_unlock_irqrestore(&s->lock, flags);
+}
+
+static void start_dac(struct solo1_state *s)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&s->lock, flags);
+	if (!(s->ena & FMODE_WRITE) && (s->dma_dac.mapped || s->dma_dac.count > 0) && s->dma_dac.ready) {
+		s->ena |= FMODE_WRITE;
+		write_mixer(s, 0x78, 0x12);
+		udelay(10);
+		write_mixer(s, 0x78, 0x13);
+	}
+	spin_unlock_irqrestore(&s->lock, flags);
+}	
+
+static inline void stop_adc(struct solo1_state *s)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&s->lock, flags);
+	s->ena &= ~FMODE_READ;
+	write_ctrl(s, 0xb8, 0xe);
+	spin_unlock_irqrestore(&s->lock, flags);
+}
+
+static void start_adc(struct solo1_state *s)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&s->lock, flags);
+	if (!(s->ena & FMODE_READ) && (s->dma_adc.mapped || s->dma_adc.count < (signed)(s->dma_adc.dmasize - 2*s->dma_adc.fragsize))
+	    && s->dma_adc.ready) {
+		s->ena |= FMODE_READ;
+		write_ctrl(s, 0xb8, 0xf);
+#if 0
+		printk(KERN_DEBUG "solo1: DMAbuffer: 0x%08lx\n", (long)s->dma_adc.rawbuf);
+		printk(KERN_DEBUG "solo1: DMA: mask: 0x%02x cnt: 0x%04x addr: 0x%08x  stat: 0x%02x\n", 
+		       inb(s->ddmabase+0xf), inw(s->ddmabase+4), inl(s->ddmabase), inb(s->ddmabase+8));
+#endif
+                outb(0, s->ddmabase+0xd); /* master reset */
+		outb(1, s->ddmabase+0xf);  /* mask */
+		outb(0x54/*0x14*/, s->ddmabase+0xb);  /* DMA_MODE_READ | DMA_MODE_AUTOINIT */
+		outl(virt_to_bus(s->dma_adc.rawbuf), s->ddmabase);
+		outw(s->dma_adc.dmasize-1, s->ddmabase+4);
+		outb(0, s->ddmabase+0xf);
+	}
+	spin_unlock_irqrestore(&s->lock, flags);
+#if 0
+	printk(KERN_DEBUG "solo1: start DMA: reg B8: 0x%02x  SBstat: 0x%02x\n"
+	       KERN_DEBUG "solo1: DMA: stat: 0x%02x  cnt: 0x%04x  mask: 0x%02x\n", 
+	       read_ctrl(s, 0xb8), inb(s->sbbase+0xc), 
+	       inb(s->ddmabase+8), inw(s->ddmabase+4), inb(s->ddmabase+0xf));
+	printk(KERN_DEBUG "solo1: A1: 0x%02x  A2: 0x%02x  A4: 0x%02x  A5: 0x%02x  A8: 0x%02x\n"  
+	       KERN_DEBUG "solo1: B1: 0x%02x  B2: 0x%02x  B4: 0x%02x  B7: 0x%02x  B8: 0x%02x  B9: 0x%02x\n",
+	       read_ctrl(s, 0xa1), read_ctrl(s, 0xa2), read_ctrl(s, 0xa4), read_ctrl(s, 0xa5), read_ctrl(s, 0xa8), 
+	       read_ctrl(s, 0xb1), read_ctrl(s, 0xb2), read_ctrl(s, 0xb4), read_ctrl(s, 0xb7), read_ctrl(s, 0xb8), 
+	       read_ctrl(s, 0xb9));
+#endif
+}
+
+/* --------------------------------------------------------------------- */
+
+#define DMABUF_DEFAULTORDER (15-PAGE_SHIFT)
+#define DMABUF_MINORDER 1
+
+static inline void dealloc_dmabuf(struct solo1_state *s, struct dmabuf *db)
+{
+	struct page *page, *pend;
+
+	if (db->rawbuf) {
+		/* undo marking the pages as reserved */
+		pend = virt_to_page(db->rawbuf + (PAGE_SIZE << db->buforder) - 1);
+		for (page = virt_to_page(db->rawbuf); page <= pend; page++)
+			ClearPageReserved(page);
+		pci_free_consistent(s->dev, PAGE_SIZE << db->buforder, db->rawbuf, db->dmaaddr);
+	}
+	db->rawbuf = NULL;
+	db->mapped = db->ready = 0;
+}
+
+static int prog_dmabuf(struct solo1_state *s, struct dmabuf *db)
+{
+	int order;
+	unsigned bytespersec;
+	unsigned bufs, sample_shift = 0;
+	struct page *page, *pend;
+
+	db->hwptr = db->swptr = db->total_bytes = db->count = db->error = db->endcleared = 0;
+	if (!db->rawbuf) {
+		db->ready = db->mapped = 0;
+                for (order = DMABUF_DEFAULTORDER; order >= DMABUF_MINORDER; order--)
+			if ((db->rawbuf = pci_alloc_consistent(s->dev, PAGE_SIZE << order, &db->dmaaddr)))
+				break;
+		if (!db->rawbuf)
+			return -ENOMEM;
+		db->buforder = order;
+		/* now mark the pages as reserved; otherwise remap_pfn_range doesn't do what we want */
+		pend = virt_to_page(db->rawbuf + (PAGE_SIZE << db->buforder) - 1);
+		for (page = virt_to_page(db->rawbuf); page <= pend; page++)
+			SetPageReserved(page);
+	}
+	if (s->fmt & (AFMT_S16_LE | AFMT_U16_LE))
+		sample_shift++;
+	if (s->channels > 1)
+		sample_shift++;
+	bytespersec = s->rate << sample_shift;
+	bufs = PAGE_SIZE << db->buforder;
+	if (db->ossfragshift) {
+		if ((1000 << db->ossfragshift) < bytespersec)
+			db->fragshift = ld2(bytespersec/1000);
+		else
+			db->fragshift = db->ossfragshift;
+	} else {
+		db->fragshift = ld2(bytespersec/100/(db->subdivision ? db->subdivision : 1));
+		if (db->fragshift < 3)
+			db->fragshift = 3;
+	}
+	db->numfrag = bufs >> db->fragshift;
+	while (db->numfrag < 4 && db->fragshift > 3) {
+		db->fragshift--;
+		db->numfrag = bufs >> db->fragshift;
+	}
+	db->fragsize = 1 << db->fragshift;
+	if (db->ossmaxfrags >= 4 && db->ossmaxfrags < db->numfrag)
+		db->numfrag = db->ossmaxfrags;
+	db->fragsamples = db->fragsize >> sample_shift;
+	db->dmasize = db->numfrag << db->fragshift;
+	db->enabled = 1;
+	return 0;
+}
+
+static inline int prog_dmabuf_adc(struct solo1_state *s)
+{
+	unsigned long va;
+	int c;
+
+	stop_adc(s);
+	/* check if PCI implementation supports 24bit busmaster DMA */
+	if (s->dev->dma_mask > 0xffffff)
+		return -EIO;
+	if ((c = prog_dmabuf(s, &s->dma_adc)))
+		return c;
+	va = s->dma_adc.dmaaddr;
+	if ((va & ~((1<<24)-1)))
+		panic("solo1: buffer above 16M boundary");
+	outb(0, s->ddmabase+0xd);  /* clear */
+	outb(1, s->ddmabase+0xf); /* mask */
+	/*outb(0, s->ddmabase+8);*/  /* enable (enable is active low!) */
+	outb(0x54, s->ddmabase+0xb);  /* DMA_MODE_READ | DMA_MODE_AUTOINIT */
+	outl(va, s->ddmabase);
+	outw(s->dma_adc.dmasize-1, s->ddmabase+4);
+	c = - s->dma_adc.fragsamples;
+	write_ctrl(s, 0xa4, c);
+	write_ctrl(s, 0xa5, c >> 8);
+	outb(0, s->ddmabase+0xf);
+	s->dma_adc.ready = 1;
+	return 0;
+}
+
+static inline int prog_dmabuf_dac(struct solo1_state *s)
+{
+	unsigned long va;
+	int c;
+
+	stop_dac(s);
+	if ((c = prog_dmabuf(s, &s->dma_dac)))
+		return c;
+	memset(s->dma_dac.rawbuf, (s->fmt & (AFMT_U8 | AFMT_U16_LE)) ? 0 : 0x80, s->dma_dac.dmasize); /* almost correct for U16 */
+	va = s->dma_dac.dmaaddr;
+	if ((va ^ (va + s->dma_dac.dmasize - 1)) & ~((1<<20)-1))
+		panic("solo1: buffer crosses 1M boundary");
+	outl(va, s->iobase);
+	/* warning: s->dma_dac.dmasize & 0xffff must not be zero! i.e. this limits us to a 32k buffer */
+	outw(s->dma_dac.dmasize, s->iobase+4);
+	c = - s->dma_dac.fragsamples;
+	write_mixer(s, 0x74, c);
+	write_mixer(s, 0x76, c >> 8);
+	outb(0xa, s->iobase+6);
+	s->dma_dac.ready = 1;
+	return 0;
+}
+
+static inline void clear_advance(void *buf, unsigned bsize, unsigned bptr, unsigned len, unsigned char c)
+{
+	if (bptr + len > bsize) {
+		unsigned x = bsize - bptr;
+		memset(((char *)buf) + bptr, c, x);
+		bptr = 0;
+		len -= x;
+	}
+	memset(((char *)buf) + bptr, c, len);
+}
+
+/* call with spinlock held! */
+
+static void solo1_update_ptr(struct solo1_state *s)
+{
+	int diff;
+	unsigned hwptr;
+
+	/* update ADC pointer */
+	if (s->ena & FMODE_READ) {
+		hwptr = (s->dma_adc.dmasize - 1 - inw(s->ddmabase+4)) % s->dma_adc.dmasize;
+                diff = (s->dma_adc.dmasize + hwptr - s->dma_adc.hwptr) % s->dma_adc.dmasize;
+                s->dma_adc.hwptr = hwptr;
+		s->dma_adc.total_bytes += diff;
+		s->dma_adc.count += diff;
+#if 0
+		printk(KERN_DEBUG "solo1: rd: hwptr %u swptr %u dmasize %u count %u\n",
+		       s->dma_adc.hwptr, s->dma_adc.swptr, s->dma_adc.dmasize, s->dma_adc.count);
+#endif
+		if (s->dma_adc.mapped) {
+			if (s->dma_adc.count >= (signed)s->dma_adc.fragsize)
+				wake_up(&s->dma_adc.wait);
+		} else {
+			if (s->dma_adc.count > (signed)(s->dma_adc.dmasize - ((3 * s->dma_adc.fragsize) >> 1))) {
+				s->ena &= ~FMODE_READ;
+				write_ctrl(s, 0xb8, 0xe);
+				s->dma_adc.error++;
+			}
+			if (s->dma_adc.count > 0)
+				wake_up(&s->dma_adc.wait);
+		}
+	}
+	/* update DAC pointer */
+	if (s->ena & FMODE_WRITE) {
+                hwptr = (s->dma_dac.dmasize - inw(s->iobase+4)) % s->dma_dac.dmasize;
+                diff = (s->dma_dac.dmasize + hwptr - s->dma_dac.hwptr) % s->dma_dac.dmasize;
+                s->dma_dac.hwptr = hwptr;
+		s->dma_dac.total_bytes += diff;
+#if 0
+		printk(KERN_DEBUG "solo1: wr: hwptr %u swptr %u dmasize %u count %u\n",
+		       s->dma_dac.hwptr, s->dma_dac.swptr, s->dma_dac.dmasize, s->dma_dac.count);
+#endif
+		if (s->dma_dac.mapped) {
+			s->dma_dac.count += diff;
+			if (s->dma_dac.count >= (signed)s->dma_dac.fragsize)
+				wake_up(&s->dma_dac.wait);
+		} else {
+			s->dma_dac.count -= diff;
+			if (s->dma_dac.count <= 0) {
+				s->ena &= ~FMODE_WRITE;
+				write_mixer(s, 0x78, 0x12);
+				s->dma_dac.error++;
+			} else if (s->dma_dac.count <= (signed)s->dma_dac.fragsize && !s->dma_dac.endcleared) {
+				clear_advance(s->dma_dac.rawbuf, s->dma_dac.dmasize, s->dma_dac.swptr,
+					      s->dma_dac.fragsize, (s->fmt & (AFMT_U8 | AFMT_U16_LE)) ? 0 : 0x80);
+				s->dma_dac.endcleared = 1;
+			}
+			if (s->dma_dac.count < (signed)s->dma_dac.dmasize)
+				wake_up(&s->dma_dac.wait);
+		}
+	}
+}
+
+/* --------------------------------------------------------------------- */
+
+static void prog_codec(struct solo1_state *s)
+{
+	unsigned long flags;
+	int fdiv, filter;
+	unsigned char c;
+
+	reset_ctrl(s);
+	write_seq(s, 0xd3);
+	/* program sampling rates */
+	filter = s->rate * 9 / 20; /* Set filter roll-off to 90% of rate/2 */
+	fdiv = 256 - 7160000 / (filter * 82);
+	spin_lock_irqsave(&s->lock, flags);
+	write_ctrl(s, 0xa1, s->clkdiv);
+	write_ctrl(s, 0xa2, fdiv);
+	write_mixer(s, 0x70, s->clkdiv);
+	write_mixer(s, 0x72, fdiv);
+	/* program ADC parameters */
+	write_ctrl(s, 0xb8, 0xe);
+	write_ctrl(s, 0xb9, /*0x1*/0);
+	write_ctrl(s, 0xa8, (s->channels > 1) ? 0x11 : 0x12);
+	c = 0xd0;
+	if (s->fmt & (AFMT_S16_LE | AFMT_U16_LE))
+		c |= 0x04;
+	if (s->fmt & (AFMT_S16_LE | AFMT_S8))
+		c |= 0x20;
+	if (s->channels > 1)
+		c ^= 0x48;
+	write_ctrl(s, 0xb7, (c & 0x70) | 1);
+	write_ctrl(s, 0xb7, c);
+	write_ctrl(s, 0xb1, 0x50);
+	write_ctrl(s, 0xb2, 0x50);
+	/* program DAC parameters */
+	c = 0x40;
+	if (s->fmt & (AFMT_S16_LE | AFMT_U16_LE))
+		c |= 1;
+	if (s->fmt & (AFMT_S16_LE | AFMT_S8))
+		c |= 4;
+	if (s->channels > 1)
+		c |= 2;
+	write_mixer(s, 0x7a, c);
+	write_mixer(s, 0x78, 0x10);
+	s->ena = 0;
+	spin_unlock_irqrestore(&s->lock, flags);
+}
+
+/* --------------------------------------------------------------------- */
+
+static const char invalid_magic[] = KERN_CRIT "solo1: invalid magic value\n";
+
+#define VALIDATE_STATE(s)                         \
+({                                                \
+	if (!(s) || (s)->magic != SOLO1_MAGIC) { \
+		printk(invalid_magic);            \
+		return -ENXIO;                    \
+	}                                         \
+})
+
+/* --------------------------------------------------------------------- */
+
+static int mixer_ioctl(struct solo1_state *s, unsigned int cmd, unsigned long arg)
+{
+	static const unsigned int mixer_src[8] = {
+		SOUND_MASK_MIC, SOUND_MASK_MIC, SOUND_MASK_CD, SOUND_MASK_VOLUME,
+		SOUND_MASK_MIC, 0, SOUND_MASK_LINE, 0
+	};
+	static const unsigned char mixtable1[SOUND_MIXER_NRDEVICES] = {
+		[SOUND_MIXER_PCM]     = 1,   /* voice */
+		[SOUND_MIXER_SYNTH]   = 2,   /* FM */
+		[SOUND_MIXER_CD]      = 3,   /* CD */
+		[SOUND_MIXER_LINE]    = 4,   /* Line */
+		[SOUND_MIXER_LINE1]   = 5,   /* AUX */
+		[SOUND_MIXER_MIC]     = 6,   /* Mic */
+		[SOUND_MIXER_LINE2]   = 7,   /* Mono in */
+		[SOUND_MIXER_SPEAKER] = 8,   /* Speaker */
+		[SOUND_MIXER_RECLEV]  = 9,   /* Recording level */
+		[SOUND_MIXER_VOLUME]  = 10   /* Master Volume */
+	};
+	static const unsigned char mixreg[] = {
+		0x7c,   /* voice */
+		0x36,   /* FM */
+		0x38,   /* CD */
+		0x3e,   /* Line */
+		0x3a,   /* AUX */
+		0x1a,   /* Mic */
+		0x6d    /* Mono in */
+	};
+	unsigned char l, r, rl, rr, vidx;
+	int i, val;
+	int __user *p = (int __user *)arg;
+
+	VALIDATE_STATE(s);
+
+	if (cmd == SOUND_MIXER_PRIVATE1) {
+		/* enable/disable/query mixer preamp */
+		if (get_user(val, p))
+			return -EFAULT;
+		if (val != -1) {
+			val = val ? 0xff : 0xf7;
+			write_mixer(s, 0x7d, (read_mixer(s, 0x7d) | 0x08) & val);
+		}
+		val = (read_mixer(s, 0x7d) & 0x08) ? 1 : 0;
+		return put_user(val, p);
+	}
+	if (cmd == SOUND_MIXER_PRIVATE2) {
+		/* enable/disable/query spatializer */
+		if (get_user(val, p))
+			return -EFAULT;
+		if (val != -1) {
+			val &= 0x3f;
+			write_mixer(s, 0x52, val);
+			write_mixer(s, 0x50, val ? 0x08 : 0);
+		}
+		return put_user(read_mixer(s, 0x52), p);
+	}
+        if (cmd == SOUND_MIXER_INFO) {
+		mixer_info info;
+		strncpy(info.id, "Solo1", sizeof(info.id));
+		strncpy(info.name, "ESS Solo1", sizeof(info.name));
+		info.modify_counter = s->mix.modcnt;
+		if (copy_to_user((void __user *)arg, &info, sizeof(info)))
+			return -EFAULT;
+		return 0;
+	}
+	if (cmd == SOUND_OLD_MIXER_INFO) {
+		_old_mixer_info info;
+		strncpy(info.id, "Solo1", sizeof(info.id));
+		strncpy(info.name, "ESS Solo1", sizeof(info.name));
+		if (copy_to_user((void __user *)arg, &info, sizeof(info)))
+			return -EFAULT;
+		return 0;
+	}
+	if (cmd == OSS_GETVERSION)
+		return put_user(SOUND_VERSION, p);
+	if (_IOC_TYPE(cmd) != 'M' || _SIOC_SIZE(cmd) != sizeof(int))
+                return -EINVAL;
+        if (_SIOC_DIR(cmd) == _SIOC_READ) {
+                switch (_IOC_NR(cmd)) {
+                case SOUND_MIXER_RECSRC: /* Arg contains a bit for each recording source */
+			return put_user(mixer_src[read_mixer(s, 0x1c) & 7], p);
+
+                case SOUND_MIXER_DEVMASK: /* Arg contains a bit for each supported device */
+			return put_user(SOUND_MASK_PCM | SOUND_MASK_SYNTH | SOUND_MASK_CD |
+					SOUND_MASK_LINE | SOUND_MASK_LINE1 | SOUND_MASK_MIC |
+					SOUND_MASK_VOLUME | SOUND_MASK_LINE2 | SOUND_MASK_RECLEV |
+					SOUND_MASK_SPEAKER, p);
+
+                case SOUND_MIXER_RECMASK: /* Arg contains a bit for each supported recording source */
+			return put_user(SOUND_MASK_LINE | SOUND_MASK_MIC | SOUND_MASK_CD | SOUND_MASK_VOLUME, p);
+
+                case SOUND_MIXER_STEREODEVS: /* Mixer channels supporting stereo */
+			return put_user(SOUND_MASK_PCM | SOUND_MASK_SYNTH | SOUND_MASK_CD |
+					SOUND_MASK_LINE | SOUND_MASK_LINE1 | SOUND_MASK_MIC |
+					SOUND_MASK_VOLUME | SOUND_MASK_LINE2 | SOUND_MASK_RECLEV, p);
+			
+                case SOUND_MIXER_CAPS:
+			return put_user(SOUND_CAP_EXCL_INPUT, p);
+
+		default:
+			i = _IOC_NR(cmd);
+                        if (i >= SOUND_MIXER_NRDEVICES || !(vidx = mixtable1[i]))
+                                return -EINVAL;
+			return put_user(s->mix.vol[vidx-1], p);
+		}
+	}
+        if (_SIOC_DIR(cmd) != (_SIOC_READ|_SIOC_WRITE)) 
+		return -EINVAL;
+	s->mix.modcnt++;
+	switch (_IOC_NR(cmd)) {
+	case SOUND_MIXER_RECSRC: /* Arg contains a bit for each recording source */
+#if 0
+	        {
+			static const unsigned char regs[] = {
+				0x1c, 0x1a, 0x36, 0x38, 0x3a, 0x3c, 0x3e, 0x60, 0x62, 0x6d, 0x7c
+			};
+			int i;
+			
+			for (i = 0; i < sizeof(regs); i++)
+				printk(KERN_DEBUG "solo1: mixer reg 0x%02x: 0x%02x\n",
+				       regs[i], read_mixer(s, regs[i]));
+			printk(KERN_DEBUG "solo1: ctrl reg 0x%02x: 0x%02x\n",
+			       0xb4, read_ctrl(s, 0xb4));
+		}
+#endif
+	        if (get_user(val, p))
+			return -EFAULT;
+                i = hweight32(val);
+                if (i == 0)
+                        return 0;
+                else if (i > 1) 
+                        val &= ~mixer_src[read_mixer(s, 0x1c) & 7];
+		for (i = 0; i < 8; i++) {
+			if (mixer_src[i] & val)
+				break;
+		}
+		if (i > 7)
+			return 0;
+		write_mixer(s, 0x1c, i);
+		return 0;
+
+	case SOUND_MIXER_VOLUME:
+		if (get_user(val, p))
+			return -EFAULT;
+		l = val & 0xff;
+		if (l > 100)
+			l = 100;
+		r = (val >> 8) & 0xff;
+		if (r > 100)
+			r = 100;
+		if (l < 6) {
+			rl = 0x40;
+			l = 0;
+		} else {
+			rl = (l * 2 - 11) / 3;
+			l = (rl * 3 + 11) / 2;
+		}
+		if (r < 6) {
+			rr = 0x40;
+			r = 0;
+		} else {
+			rr = (r * 2 - 11) / 3;
+			r = (rr * 3 + 11) / 2;
+		}
+		write_mixer(s, 0x60, rl);
+		write_mixer(s, 0x62, rr);
+#ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
+                s->mix.vol[9] = ((unsigned int)r << 8) | l;
+#else
+                s->mix.vol[9] = val;
+#endif
+		return put_user(s->mix.vol[9], p);
+
+	case SOUND_MIXER_SPEAKER:
+		if (get_user(val, p))
+			return -EFAULT;
+		l = val & 0xff;
+		if (l > 100)
+			l = 100;
+		else if (l < 2)
+			l = 2;
+		rl = (l - 2) / 14;
+		l = rl * 14 + 2;
+		write_mixer(s, 0x3c, rl);
+#ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
+                s->mix.vol[7] = l * 0x101;
+#else
+                s->mix.vol[7] = val;
+#endif
+		return put_user(s->mix.vol[7], p);
+
+	case SOUND_MIXER_RECLEV:
+		if (get_user(val, p))
+			return -EFAULT;
+		l = (val << 1) & 0x1fe;
+		if (l > 200)
+			l = 200;
+		else if (l < 5)
+			l = 5;
+		r = (val >> 7) & 0x1fe;
+		if (r > 200)
+			r = 200;
+		else if (r < 5)
+			r = 5;
+		rl = (l - 5) / 13;
+		rr = (r - 5) / 13;
+		r = (rl * 13 + 5) / 2;
+		l = (rr * 13 + 5) / 2;
+		write_ctrl(s, 0xb4, (rl << 4) | rr);
+#ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
+                s->mix.vol[8] = ((unsigned int)r << 8) | l;
+#else
+                s->mix.vol[8] = val;
+#endif
+		return put_user(s->mix.vol[8], p);
+
+	default:
+		i = _IOC_NR(cmd);
+		if (i >= SOUND_MIXER_NRDEVICES || !(vidx = mixtable1[i]))
+			return -EINVAL;
+		if (get_user(val, p))
+			return -EFAULT;
+		l = (val << 1) & 0x1fe;
+		if (l > 200)
+			l = 200;
+		else if (l < 5)
+			l = 5;
+		r = (val >> 7) & 0x1fe;
+		if (r > 200)
+			r = 200;
+		else if (r < 5)
+			r = 5;
+		rl = (l - 5) / 13;
+		rr = (r - 5) / 13;
+		r = (rl * 13 + 5) / 2;
+		l = (rr * 13 + 5) / 2;
+		write_mixer(s, mixreg[vidx-1], (rl << 4) | rr);
+#ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
+                s->mix.vol[vidx-1] = ((unsigned int)r << 8) | l;
+#else
+                s->mix.vol[vidx-1] = val;
+#endif
+		return put_user(s->mix.vol[vidx-1], p);
+	}
+}
+
+/* --------------------------------------------------------------------- */
+
+static int solo1_open_mixdev(struct inode *inode, struct file *file)
+{
+	unsigned int minor = iminor(inode);
+	struct solo1_state *s = NULL;
+	struct pci_dev *pci_dev = NULL;
+
+	while ((pci_dev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pci_dev)) != NULL) {
+		struct pci_driver *drvr;
+		drvr = pci_dev_driver (pci_dev);
+		if (drvr != &solo1_driver)
+			continue;
+		s = (struct solo1_state*)pci_get_drvdata(pci_dev);
+		if (!s)
+			continue;
+		if (s->dev_mixer == minor)
+			break;
+	}
+	if (!s)
+		return -ENODEV;
+       	VALIDATE_STATE(s);
+	file->private_data = s;
+	return nonseekable_open(inode, file);
+}
+
+static int solo1_release_mixdev(struct inode *inode, struct file *file)
+{
+	struct solo1_state *s = (struct solo1_state *)file->private_data;
+
+	VALIDATE_STATE(s);
+	return 0;
+}
+
+static int solo1_ioctl_mixdev(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+{
+	return mixer_ioctl((struct solo1_state *)file->private_data, cmd, arg);
+}
+
+static /*const*/ struct file_operations solo1_mixer_fops = {
+	.owner		= THIS_MODULE,
+	.llseek		= no_llseek,
+	.ioctl		= solo1_ioctl_mixdev,
+	.open		= solo1_open_mixdev,
+	.release	= solo1_release_mixdev,
+};
+
+/* --------------------------------------------------------------------- */
+
+static int drain_dac(struct solo1_state *s, int nonblock)
+{
+	DECLARE_WAITQUEUE(wait, current);
+	unsigned long flags;
+	int count;
+	unsigned tmo;
+	
+	if (s->dma_dac.mapped)
+		return 0;
+        add_wait_queue(&s->dma_dac.wait, &wait);
+        for (;;) {
+		set_current_state(TASK_INTERRUPTIBLE);
+                spin_lock_irqsave(&s->lock, flags);
+		count = s->dma_dac.count;
+                spin_unlock_irqrestore(&s->lock, flags);
+		if (count <= 0)
+			break;
+		if (signal_pending(current))
+                        break;
+                if (nonblock) {
+                        remove_wait_queue(&s->dma_dac.wait, &wait);
+                        set_current_state(TASK_RUNNING);
+                        return -EBUSY;
+                }
+		tmo = 3 * HZ * (count + s->dma_dac.fragsize) / 2 / s->rate;
+		if (s->fmt & (AFMT_S16_LE | AFMT_U16_LE))
+			tmo >>= 1;
+		if (s->channels > 1)
+			tmo >>= 1;
+                if (!schedule_timeout(tmo + 1))
+                        printk(KERN_DEBUG "solo1: dma timed out??\n");
+        }
+        remove_wait_queue(&s->dma_dac.wait, &wait);
+        set_current_state(TASK_RUNNING);
+        if (signal_pending(current))
+                return -ERESTARTSYS;
+        return 0;
+}
+
+/* --------------------------------------------------------------------- */
+
+static ssize_t solo1_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
+{
+	struct solo1_state *s = (struct solo1_state *)file->private_data;
+	DECLARE_WAITQUEUE(wait, current);
+	ssize_t ret;
+	unsigned long flags;
+	unsigned swptr;
+	int cnt;
+
+	VALIDATE_STATE(s);
+	if (s->dma_adc.mapped)
+		return -ENXIO;
+	if (!s->dma_adc.ready && (ret = prog_dmabuf_adc(s)))
+		return ret;
+	if (!access_ok(VERIFY_WRITE, buffer, count))
+		return -EFAULT;
+	ret = 0;
+	add_wait_queue(&s->dma_adc.wait, &wait);
+	while (count > 0) {
+		spin_lock_irqsave(&s->lock, flags);
+		swptr = s->dma_adc.swptr;
+		cnt = s->dma_adc.dmasize-swptr;
+		if (s->dma_adc.count < cnt)
+			cnt = s->dma_adc.count;
+		if (cnt <= 0)
+			__set_current_state(TASK_INTERRUPTIBLE);
+		spin_unlock_irqrestore(&s->lock, flags);
+		if (cnt > count)
+			cnt = count;
+#ifdef DEBUGREC
+		printk(KERN_DEBUG "solo1_read: reg B8: 0x%02x  DMAstat: 0x%02x  DMAcnt: 0x%04x  SBstat: 0x%02x  cnt: %u\n", 
+		       read_ctrl(s, 0xb8), inb(s->ddmabase+8), inw(s->ddmabase+4), inb(s->sbbase+0xc), cnt);
+#endif
+		if (cnt <= 0) {
+			if (s->dma_adc.enabled)
+				start_adc(s);
+#ifdef DEBUGREC
+			printk(KERN_DEBUG "solo1_read: regs: A1: 0x%02x  A2: 0x%02x  A4: 0x%02x  A5: 0x%02x  A8: 0x%02x\n"
+			       KERN_DEBUG "solo1_read: regs: B1: 0x%02x  B2: 0x%02x  B7: 0x%02x  B8: 0x%02x  B9: 0x%02x\n"
+			       KERN_DEBUG "solo1_read: DMA: addr: 0x%08x cnt: 0x%04x stat: 0x%02x mask: 0x%02x\n"  
+			       KERN_DEBUG "solo1_read: SBstat: 0x%02x  cnt: %u\n",
+			       read_ctrl(s, 0xa1), read_ctrl(s, 0xa2), read_ctrl(s, 0xa4), read_ctrl(s, 0xa5), read_ctrl(s, 0xa8), 
+			       read_ctrl(s, 0xb1), read_ctrl(s, 0xb2), read_ctrl(s, 0xb7), read_ctrl(s, 0xb8), read_ctrl(s, 0xb9), 
+			       inl(s->ddmabase), inw(s->ddmabase+4), inb(s->ddmabase+8), inb(s->ddmabase+15), inb(s->sbbase+0xc), cnt);
+#endif
+			if (i