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, 2789 insertions, 0 deletions

diff --git a/sound/oss/es1370.c b/sound/oss/es1370.c
new file mode 100644
index 00000000000..056091cff26
--- /dev/null
+++ b/sound/oss/es1370.c
@@ -0,0 +1,2789 @@
+/*****************************************************************************/
+
+/*
+ *      es1370.c  --  Ensoniq ES1370/Asahi Kasei AK4531 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.
+ *
+ * Special thanks to David C. Niemi
+ *
+ *
+ * Module command line parameters:
+ *   lineout  if 1 the LINE jack is used as an output instead of an input.
+ *            LINE then contains the unmixed dsp output. This can be used
+ *            to make the card a four channel one: use dsp to output two
+ *            channels to LINE and dac to output the other two channels to
+ *            SPKR. Set the mixer to only output synth to SPKR.
+ *   micbias  sets the +5V bias to the mic if using an electretmic.
+ *            
+ *
+ *  Note: sync mode is not yet supported (i.e. running dsp and dac from the same
+ *  clock source)
+ *
+ *  Supported devices:
+ *  /dev/dsp    standard /dev/dsp device, (mostly) OSS compatible
+ *  /dev/mixer  standard /dev/mixer device, (mostly) OSS compatible
+ *  /dev/dsp1   additional DAC, like /dev/dsp, but output only,
+ *              only 5512, 11025, 22050 and 44100 samples/s,
+ *              outputs to mixer "SYNTH" setting
+ *  /dev/midi   simple MIDI UART interface, no ioctl
+ *
+ *  NOTE: the card does not have any FM/Wavetable synthesizer, it is supposed
+ *  to be done in software. That is what /dev/dac is for. By now (Q2 1998)
+ *  there are several MIDI to PCM (WAV) packages, one of them is timidity.
+ *
+ *  Revision history
+ *    26.03.1998   0.1   Initial release
+ *    31.03.1998   0.2   Fix bug in GETOSPACE
+ *    04.04.1998   0.3   Make it work (again) under 2.0.33
+ *                       Fix mixer write operation not returning the actual
+ *                       settings
+ *    05.04.1998   0.4   First attempt at using the new PCI stuff
+ *    29.04.1998   0.5   Fix hang when ^C is pressed on amp
+ *    07.05.1998   0.6   Don't double lock around stop_*() in *_release()
+ *    10.05.1998   0.7   First stab at a simple midi interface (no bells&whistles)
+ *    14.05.1998   0.8   Don't allow excessive interrupt rates
+ *    08.06.1998   0.9   First release using Alan Cox' soundcore instead of
+ *                       miscdevice
+ *    05.07.1998   0.10  Fixed the driver to correctly maintin OSS style volume
+ *                       settings (not sure if this should be standard)
+ *                       Fixed many references: f_flags should be f_mode
+ *                       -- Gerald Britton <gbritton@mit.edu>
+ *    03.08.1998   0.11  Now mixer behaviour can basically be selected between
+ *                       "OSS documented" and "OSS actual" behaviour
+ *                       Fixed mixer table thanks to Hakan.Lennestal@lu.erisoft.se
+ *                       On module startup, set DAC2 to 11kSPS instead of 5.5kSPS,
+ *                       as it produces an annoying ssssh in the lower sampling rate
+ *                       Do not include modversions.h
+ *    22.08.1998   0.12  Mixer registers actually have 5 instead of 4 bits
+ *                       pointed out by Itai Nahshon
+ *    31.08.1998   0.13  Fix realplayer problems - dac.count issues
+ *    08.10.1998   0.14  Joystick support fixed
+ *		         -- Oliver Neukum <c188@org.chemie.uni-muenchen.de>
+ *    10.12.1998   0.15  Fix drain_dac trying to wait on not yet initialized DMA
+ *    16.12.1998   0.16  Don't wake up app until there are fragsize bytes to read/write
+ *    06.01.1999   0.17  remove the silly SA_INTERRUPT flag.
+ *                       hopefully killed the egcs section type conflict
+ *    12.03.1999   0.18  cinfo.blocks should be reset after GETxPTR ioctl.
+ *                       reported by Johan Maes <joma@telindus.be>
+ *    22.03.1999   0.19  return EAGAIN instead of EBUSY when O_NONBLOCK
+ *                       read/write cannot be executed
+ *    07.04.1999   0.20  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>
+ *                       Note: joystick address handling might still be wrong on archs
+ *                       other than i386
+ *    10.05.1999   0.21  Added support for an electret mic for SB PCI64
+ *                       to the Linux kernel sound driver. This mod also straighten
+ *                       out the question marks around the mic impedance setting
+ *                       (micz). From Kim.Berts@fisub.mail.abb.com
+ *    11.05.1999   0.22  Implemented the IMIX call to mute recording monitor.
+ *                       Guenter Geiger <geiger@epy.co.at>
+ *    15.06.1999   0.23  Fix bad allocation bug.
+ *                       Thanks to Deti Fliegl <fliegl@in.tum.de>
+ *    28.06.1999   0.24  Add pci_set_master
+ *    02.08.1999   0.25  Added workaround for the "phantom write" bug first
+ *                       documented by Dave Sharpless from Anchor Games
+ *    03.08.1999   0.26  adapt to Linus' new __setup/__initcall
+ *                       added kernel command line option "es1370=joystick[,lineout[,micbias]]"
+ *                       removed CONFIG_SOUND_ES1370_JOYPORT_BOOT kludge
+ *    12.08.1999   0.27  module_init/__setup fixes
+ *    19.08.1999   0.28  SOUND_MIXER_IMIX fixes, reported by Gianluca <gialluca@mail.tiscalinet.it>
+ *    31.08.1999   0.29  add spin_lock_init
+ *                       replaced current->state = x with set_current_state(x)
+ *    03.09.1999   0.30  change read semantics for MIDI to match
+ *                       OSS more closely; remove possible wakeup race
+ *    28.10.1999   0.31  More waitqueue races fixed
+ *    08.01.2000   0.32  Prevent some ioctl's from returning bad count values on underrun/overrun;
+ *                       Tim Janik's BSE (Bedevilled Sound Engine) found this
+ *    07.02.2000   0.33  Use pci_alloc_consistent and pci_register_driver
+ *    21.11.2000   0.34  Initialize dma buffers in poll, otherwise poll may return a bogus mask
+ *    12.12.2000   0.35  More dma buffer initializations, patch from
+ *                       Tjeerd Mulder <tjeerd.mulder@fujitsu-siemens.com>
+ *    07.01.2001   0.36  Timeout change in wrcodec as requested by Frank Klemm <pfk@fuchs.offl.uni-jena.de>
+ *    31.01.2001   0.37  Register/Unregister gameport
+ *                       Fix SETTRIGGER non OSS API conformity
+ *    03.01.2003   0.38  open_mode fixes from Georg Acher <acher@in.tum.de>
+ *
+ * some important things missing in Ensoniq documentation:
+ *
+ * Experimental PCLKDIV results:  play the same waveforms on both DAC1 and DAC2
+ * and vary PCLKDIV to obtain zero beat.
+ *  5512sps:  254
+ * 44100sps:   30
+ * seems to be fs = 1411200/(PCLKDIV+2)
+ *
+ * should find out when curr_sample_ct is cleared and
+ * where exactly the CCB fetches data
+ *
+ * The card uses a 22.5792 MHz crystal.
+ * The LINEIN jack may be converted to an AOUT jack by
+ * setting pin 47 (XCTL0) of the ES1370 to high.
+ * Pin 48 (XCTL1) of the ES1370 sets the +5V bias for an electretmic
+ * 
+ *
+ */
+
+/*****************************************************************************/
+      
+#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/smp_lock.h>
+#include <linux/init.h>
+#include <linux/poll.h>
+#include <linux/spinlock.h>
+#include <linux/gameport.h>
+#include <linux/wait.h>
+
+#include <asm/io.h>
+#include <asm/page.h>
+#include <asm/uaccess.h>
+
+/* --------------------------------------------------------------------- */
+
+#undef OSS_DOCUMENTED_MIXER_SEMANTICS
+#define DBG(x) {}
+/*#define DBG(x) {x}*/
+
+/* --------------------------------------------------------------------- */
+
+#ifndef PCI_VENDOR_ID_ENSONIQ
+#define PCI_VENDOR_ID_ENSONIQ        0x1274    
+#endif
+
+#ifndef PCI_DEVICE_ID_ENSONIQ_ES1370
+#define PCI_DEVICE_ID_ENSONIQ_ES1370 0x5000
+#endif
+
+#define ES1370_MAGIC  ((PCI_VENDOR_ID_ENSONIQ<<16)|PCI_DEVICE_ID_ENSONIQ_ES1370)
+
+#define ES1370_EXTENT             0x40
+#define JOY_EXTENT                8
+
+#define ES1370_REG_CONTROL        0x00
+#define ES1370_REG_STATUS         0x04
+#define ES1370_REG_UART_DATA      0x08
+#define ES1370_REG_UART_STATUS    0x09
+#define ES1370_REG_UART_CONTROL   0x09
+#define ES1370_REG_UART_TEST      0x0a
+#define ES1370_REG_MEMPAGE        0x0c
+#define ES1370_REG_CODEC          0x10
+#define ES1370_REG_SERIAL_CONTROL 0x20
+#define ES1370_REG_DAC1_SCOUNT    0x24
+#define ES1370_REG_DAC2_SCOUNT    0x28
+#define ES1370_REG_ADC_SCOUNT     0x2c
+
+#define ES1370_REG_DAC1_FRAMEADR    0xc30
+#define ES1370_REG_DAC1_FRAMECNT    0xc34
+#define ES1370_REG_DAC2_FRAMEADR    0xc38
+#define ES1370_REG_DAC2_FRAMECNT    0xc3c
+#define ES1370_REG_ADC_FRAMEADR     0xd30
+#define ES1370_REG_ADC_FRAMECNT     0xd34
+#define ES1370_REG_PHANTOM_FRAMEADR 0xd38
+#define ES1370_REG_PHANTOM_FRAMECNT 0xd3c
+
+#define ES1370_FMT_U8_MONO     0
+#define ES1370_FMT_U8_STEREO   1
+#define ES1370_FMT_S16_MONO    2
+#define ES1370_FMT_S16_STEREO  3
+#define ES1370_FMT_STEREO      1
+#define ES1370_FMT_S16         2
+#define ES1370_FMT_MASK        3
+
+static const unsigned sample_size[] = { 1, 2, 2, 4 };
+static const unsigned sample_shift[] = { 0, 1, 1, 2 };
+
+static const unsigned dac1_samplerate[] = { 5512, 11025, 22050, 44100 };
+
+#define DAC2_SRTODIV(x) (((1411200+(x)/2)/(x))-2)
+#define DAC2_DIVTOSR(x) (1411200/((x)+2))
+
+#define CTRL_ADC_STOP   0x80000000  /* 1 = ADC stopped */
+#define CTRL_XCTL1      0x40000000  /* electret mic bias */
+#define CTRL_OPEN       0x20000000  /* no function, can be read and written */
+#define CTRL_PCLKDIV    0x1fff0000  /* ADC/DAC2 clock divider */
+#define CTRL_SH_PCLKDIV 16
+#define CTRL_MSFMTSEL   0x00008000  /* MPEG serial data fmt: 0 = Sony, 1 = I2S */
+#define CTRL_M_SBB      0x00004000  /* DAC2 clock: 0 = PCLKDIV, 1 = MPEG */
+#define CTRL_WTSRSEL    0x00003000  /* DAC1 clock freq: 0=5512, 1=11025, 2=22050, 3=44100 */
+#define CTRL_SH_WTSRSEL 12
+#define CTRL_DAC_SYNC   0x00000800  /* 1 = DAC2 runs off DAC1 clock */
+#define CTRL_CCB_INTRM  0x00000400  /* 1 = CCB "voice" ints enabled */
+#define CTRL_M_CB       0x00000200  /* recording source: 0 = ADC, 1 = MPEG */
+#define CTRL_XCTL0      0x00000100  /* 0 = Line in, 1 = Line out */
+#define CTRL_BREQ       0x00000080  /* 1 = test mode (internal mem test) */
+#define CTRL_DAC1_EN    0x00000040  /* enable DAC1 */
+#define CTRL_DAC2_EN    0x00000020  /* enable DAC2 */
+#define CTRL_ADC_EN     0x00000010  /* enable ADC */
+#define CTRL_UART_EN    0x00000008  /* enable MIDI uart */
+#define CTRL_JYSTK_EN   0x00000004  /* enable Joystick port (presumably at address 0x200) */
+#define CTRL_CDC_EN     0x00000002  /* enable serial (CODEC) interface */
+#define CTRL_SERR_DIS   0x00000001  /* 1 = disable PCI SERR signal */
+
+#define STAT_INTR       0x80000000  /* wired or of all interrupt bits */
+#define STAT_CSTAT      0x00000400  /* 1 = codec busy or codec write in progress */
+#define STAT_CBUSY      0x00000200  /* 1 = codec busy */
+#define STAT_CWRIP      0x00000100  /* 1 = codec write in progress */
+#define STAT_VC         0x00000060  /* CCB int source, 0=DAC1, 1=DAC2, 2=ADC, 3=undef */
+#define STAT_SH_VC      5
+#define STAT_MCCB       0x00000010  /* CCB int pending */
+#define STAT_UART       0x00000008  /* UART int pending */
+#define STAT_DAC1       0x00000004  /* DAC1 int pending */
+#define STAT_DAC2       0x00000002  /* DAC2 int pending */
+#define STAT_ADC        0x00000001  /* ADC int pending */
+
+#define USTAT_RXINT     0x80        /* UART rx int pending */
+#define USTAT_TXINT     0x04        /* UART tx int pending */
+#define USTAT_TXRDY     0x02        /* UART tx ready */
+#define USTAT_RXRDY     0x01        /* UART rx ready */
+
+#define UCTRL_RXINTEN   0x80        /* 1 = enable RX ints */
+#define UCTRL_TXINTEN   0x60        /* TX int enable field mask */
+#define UCTRL_ENA_TXINT 0x20        /* enable TX int */
+#define UCTRL_CNTRL     0x03        /* control field */
+#define UCTRL_CNTRL_SWR 0x03        /* software reset command */
+
+#define SCTRL_P2ENDINC    0x00380000  /*  */
+#define SCTRL_SH_P2ENDINC 19
+#define SCTRL_P2STINC     0x00070000  /*  */
+#define SCTRL_SH_P2STINC  16
+#define SCTRL_R1LOOPSEL   0x00008000  /* 0 = loop mode */
+#define SCTRL_P2LOOPSEL   0x00004000  /* 0 = loop mode */
+#define SCTRL_P1LOOPSEL   0x00002000  /* 0 = loop mode */
+#define SCTRL_P2PAUSE     0x00001000  /* 1 = pause mode */
+#define SCTRL_P1PAUSE     0x00000800  /* 1 = pause mode */
+#define SCTRL_R1INTEN     0x00000400  /* enable interrupt */
+#define SCTRL_P2INTEN     0x00000200  /* enable interrupt */
+#define SCTRL_P1INTEN     0x00000100  /* enable interrupt */
+#define SCTRL_P1SCTRLD    0x00000080  /* reload sample count register for DAC1 */
+#define SCTRL_P2DACSEN    0x00000040  /* 1 = DAC2 play back last sample when disabled */
+#define SCTRL_R1SEB       0x00000020  /* 1 = 16bit */
+#define SCTRL_R1SMB       0x00000010  /* 1 = stereo */
+#define SCTRL_R1FMT       0x00000030  /* format mask */
+#define SCTRL_SH_R1FMT    4
+#define SCTRL_P2SEB       0x00000008  /* 1 = 16bit */
+#define SCTRL_P2SMB       0x00000004  /* 1 = stereo */
+#define SCTRL_P2FMT       0x0000000c  /* format mask */
+#define SCTRL_SH_P2FMT    2
+#define SCTRL_P1SEB       0x00000002  /* 1 = 16bit */
+#define SCTRL_P1SMB       0x00000001  /* 1 = stereo */
+#define SCTRL_P1FMT       0x00000003  /* format mask */
+#define SCTRL_SH_P1FMT    0
+
+/* misc stuff */
+
+#define FMODE_DAC         4           /* slight misuse of mode_t */
+
+/* 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)
+
+/* --------------------------------------------------------------------- */
+
+struct es1370_state {
+	/* magic */
+	unsigned int magic;
+
+	/* list of es1370 devices */
+	struct list_head devs;
+
+	/* the corresponding pci_dev structure */
+	struct pci_dev *dev;
+
+	/* soundcore stuff */
+	int dev_audio;
+	int dev_mixer;
+	int dev_dac;
+	int dev_midi;
+	
+	/* hardware resources */
+	unsigned long io; /* long for SPARC */
+	unsigned int irq;
+
+	/* mixer registers; there is no HW readback */
+	struct {
+		unsigned short vol[10];
+		unsigned int recsrc;
+		unsigned int modcnt;
+		unsigned short micpreamp;
+	        unsigned int imix;
+	} mix;
+
+	/* wave stuff */
+	unsigned ctrl;
+	unsigned sctrl;
+
+	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_dac1, dma_dac2, dma_adc;
+
+	/* The following buffer is used to point the phantom write channel to. */
+	unsigned char *bugbuf_cpu;
+	dma_addr_t bugbuf_dma;
+
+	/* midi stuff */
+	struct {
+		unsigned ird, iwr, icnt;
+		unsigned ord, owr, ocnt;
+		wait_queue_head_t iwait;
+		wait_queue_head_t owait;
+		unsigned char ibuf[MIDIINBUF];
+		unsigned char obuf[MIDIOUTBUF];
+	} midi;
+
+	struct gameport *gameport;
+	struct semaphore sem;
+};
+
+/* --------------------------------------------------------------------- */
+
+static LIST_HEAD(devs);
+
+/* --------------------------------------------------------------------- */
+
+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 void wrcodec(struct es1370_state *s, unsigned char idx, unsigned char data)
+{
+	unsigned long tmo = jiffies + HZ/10, j;
+	
+	do {
+		j = jiffies;
+		if (!(inl(s->io+ES1370_REG_STATUS) & STAT_CSTAT)) {
+			outw((((unsigned short)idx)<<8)|data, s->io+ES1370_REG_CODEC);
+			return;
+		}
+		schedule();
+	} while ((signed)(tmo-j) > 0);
+	printk(KERN_ERR "es1370: write to codec register timeout\n");
+}
+
+/* --------------------------------------------------------------------- */
+
+static inline void stop_adc(struct es1370_state *s)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&s->lock, flags);
+	s->ctrl &= ~CTRL_ADC_EN;
+	outl(s->ctrl, s->io+ES1370_REG_CONTROL);
+	spin_unlock_irqrestore(&s->lock, flags);
+}	
+
+static inline void stop_dac1(struct es1370_state *s)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&s->lock, flags);
+	s->ctrl &= ~CTRL_DAC1_EN;
+	outl(s->ctrl, s->io+ES1370_REG_CONTROL);
+	spin_unlock_irqrestore(&s->lock, flags);
+}	
+
+static inline void stop_dac2(struct es1370_state *s)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&s->lock, flags);
+	s->ctrl &= ~CTRL_DAC2_EN;
+	outl(s->ctrl, s->io+ES1370_REG_CONTROL);
+	spin_unlock_irqrestore(&s->lock, flags);
+}	
+
+static void start_dac1(struct es1370_state *s)
+{
+	unsigned long flags;
+	unsigned fragremain, fshift;
+
+	spin_lock_irqsave(&s->lock, flags);
+	if (!(s->ctrl & CTRL_DAC1_EN) && (s->dma_dac1.mapped || s->dma_dac1.count > 0)
+	    && s->dma_dac1.ready) {
+		s->ctrl |= CTRL_DAC1_EN;
+		s->sctrl = (s->sctrl & ~(SCTRL_P1LOOPSEL | SCTRL_P1PAUSE | SCTRL_P1SCTRLD)) | SCTRL_P1INTEN;
+		outl(s->sctrl, s->io+ES1370_REG_SERIAL_CONTROL);
+		fragremain = ((- s->dma_dac1.hwptr) & (s->dma_dac1.fragsize-1));
+		fshift = sample_shift[(s->sctrl & SCTRL_P1FMT) >> SCTRL_SH_P1FMT];
+		if (fragremain < 2*fshift)
+			fragremain = s->dma_dac1.fragsize;
+		outl((fragremain >> fshift) - 1, s->io+ES1370_REG_DAC1_SCOUNT);
+		outl(s->ctrl, s->io+ES1370_REG_CONTROL);
+		outl((s->dma_dac1.fragsize >> fshift) - 1, s->io+ES1370_REG_DAC1_SCOUNT);
+	}
+	spin_unlock_irqrestore(&s->lock, flags);
+}	
+
+static void start_dac2(struct es1370_state *s)
+{
+	unsigned long flags;
+	unsigned fragremain, fshift;
+
+	spin_lock_irqsave(&s->lock, flags);
+	if (!(s->ctrl & CTRL_DAC2_EN) && (s->dma_dac2.mapped || s->dma_dac2.count > 0)
+	    && s->dma_dac2.ready) {
+		s->ctrl |= CTRL_DAC2_EN;
+		s->sctrl = (s->sctrl & ~(SCTRL_P2LOOPSEL | SCTRL_P2PAUSE | SCTRL_P2DACSEN | 
+					 SCTRL_P2ENDINC | SCTRL_P2STINC)) | SCTRL_P2INTEN |
+			(((s->sctrl & SCTRL_P2FMT) ? 2 : 1) << SCTRL_SH_P2ENDINC) | 
+			(0 << SCTRL_SH_P2STINC);
+		outl(s->sctrl, s->io+ES1370_REG_SERIAL_CONTROL);
+		fragremain = ((- s->dma_dac2.hwptr) & (s->dma_dac2.fragsize-1));
+		fshift = sample_shift[(s->sctrl & SCTRL_P2FMT) >> SCTRL_SH_P2FMT];
+		if (fragremain < 2*fshift)
+			fragremain = s->dma_dac2.fragsize;
+		outl((fragremain >> fshift) - 1, s->io+ES1370_REG_DAC2_SCOUNT);
+		outl(s->ctrl, s->io+ES1370_REG_CONTROL);
+		outl((s->dma_dac2.fragsize >> fshift) - 1, s->io+ES1370_REG_DAC2_SCOUNT);
+	}
+	spin_unlock_irqrestore(&s->lock, flags);
+}	
+
+static void start_adc(struct es1370_state *s)
+{
+	unsigned long flags;
+	unsigned fragremain, fshift;
+
+	spin_lock_irqsave(&s->lock, flags);
+	if (!(s->ctrl & CTRL_ADC_EN) && (s->dma_adc.mapped || s->dma_adc.count < (signed)(s->dma_adc.dmasize - 2*s->dma_adc.fragsize))
+	    && s->dma_adc.ready) {
+		s->ctrl |= CTRL_ADC_EN;
+		s->sctrl = (s->sctrl & ~SCTRL_R1LOOPSEL) | SCTRL_R1INTEN;
+		outl(s->sctrl, s->io+ES1370_REG_SERIAL_CONTROL);
+		fragremain = ((- s->dma_adc.hwptr) & (s->dma_adc.fragsize-1));
+		fshift = sample_shift[(s->sctrl & SCTRL_R1FMT) >> SCTRL_SH_R1FMT];
+		if (fragremain < 2*fshift)
+			fragremain = s->dma_adc.fragsize;
+		outl((fragremain >> fshift) - 1, s->io+ES1370_REG_ADC_SCOUNT);
+		outl(s->ctrl, s->io+ES1370_REG_CONTROL);
+		outl((s->dma_adc.fragsize >> fshift) - 1, s->io+ES1370_REG_ADC_SCOUNT);
+	}
+	spin_unlock_irqrestore(&s->lock, flags);
+}	
+
+/* --------------------------------------------------------------------- */
+
+#define DMABUF_DEFAULTORDER (17-PAGE_SHIFT)
+#define DMABUF_MINORDER 1
+
+static inline void dealloc_dmabuf(struct es1370_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 es1370_state *s, struct dmabuf *db, unsigned rate, unsigned fmt, unsigned reg)
+{
+	int order;
+	unsigned bytepersec;
+	unsigned bufs;
+	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);
+	}
+	fmt &= ES1370_FMT_MASK;
+	bytepersec = rate << sample_shift[fmt];
+	bufs = PAGE_SIZE << db->buforder;
+	if (db->ossfragshift) {
+		if ((1000 << db->ossfragshift) < bytepersec)
+			db->fragshift = ld2(bytepersec/1000);
+		else
+			db->fragshift = db->ossfragshift;
+	} else {
+		db->fragshift = ld2(bytepersec/100/(db->subdivision ? db->subdivision : 1));
+		if (db->fragshift < 3)
+			db->fragshift = 3;
+	}
+	db->numfrag = bufs >> db->fragshift;
+	while (db->numfrag < 4 && db->fragshift > 3) {
+		db->fragshift--;
+		db->numfrag = bufs >> db->fragshift;
+	}
+	db->fragsize = 1 << db->fragshift;
+	if (db->ossmaxfrags >= 4 && db->ossmaxfrags < db->numfrag)
+		db->numfrag = db->ossmaxfrags;
+	db->fragsamples = db->fragsize >> sample_shift[fmt];
+	db->dmasize = db->numfrag << db->fragshift;
+	memset(db->rawbuf, (fmt & ES1370_FMT_S16) ? 0 : 0x80, db->dmasize);
+	outl((reg >> 8) & 15, s->io+ES1370_REG_MEMPAGE);
+	outl(db->dmaaddr, s->io+(reg & 0xff));
+	outl((db->dmasize >> 2)-1, s->io+((reg + 4) & 0xff));
+	db->enabled = 1;
+	db->ready = 1;
+	return 0;
+}
+
+static inline int prog_dmabuf_adc(struct es1370_state *s)
+{
+	stop_adc(s);
+	return prog_dmabuf(s, &s->dma_adc, DAC2_DIVTOSR((s->ctrl & CTRL_PCLKDIV) >> CTRL_SH_PCLKDIV),
+			   (s->sctrl >> SCTRL_SH_R1FMT) & ES1370_FMT_MASK, ES1370_REG_ADC_FRAMEADR);
+}
+
+static inline int prog_dmabuf_dac2(struct es1370_state *s)
+{
+	stop_dac2(s);
+	return prog_dmabuf(s, &s->dma_dac2, DAC2_DIVTOSR((s->ctrl & CTRL_PCLKDIV) >> CTRL_SH_PCLKDIV),
+			   (s->sctrl >> SCTRL_SH_P2FMT) & ES1370_FMT_MASK, ES1370_REG_DAC2_FRAMEADR);
+}
+
+static inline int prog_dmabuf_dac1(struct es1370_state *s)
+{
+	stop_dac1(s);
+	return prog_dmabuf(s, &s->dma_dac1, dac1_samplerate[(s->ctrl & CTRL_WTSRSEL) >> CTRL_SH_WTSRSEL],
+			   (s->sctrl >> SCTRL_SH_P1FMT) & ES1370_FMT_MASK, ES1370_REG_DAC1_FRAMEADR);
+}
+
+static inline unsigned get_hwptr(struct es1370_state *s, struct dmabuf *db, unsigned reg)
+{
+	unsigned hwptr, diff;
+
+	outl((reg >> 8) & 15, s->io+ES1370_REG_MEMPAGE);
+	hwptr = (inl(s->io+(reg & 0xff)) >> 14) & 0x3fffc;
+	diff = (db->dmasize + hwptr - db->hwptr) % db->dmasize;
+	db->hwptr = hwptr;
+	return diff;
+}
+
+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 es1370_update_ptr(struct es1370_state *s)
+{
+	int diff;
+
+	/* update ADC pointer */
+	if (s->ctrl & CTRL_ADC_EN) {
+		diff = get_hwptr(s, &s->dma_adc, ES1370_REG_ADC_FRAMECNT);
+		s->dma_adc.total_bytes += diff;
+		s->dma_adc.count += diff;
+		if (s->dma_adc.count >= (signed)s->dma_adc.fragsize) 
+			wake_up(&s->dma_adc.wait);
+		if (!s->dma_adc.mapped) {
+			if (s->dma_adc.count > (signed)(s->dma_adc.dmasize - ((3 * s->dma_adc.fragsize) >> 1))) {
+				s->ctrl &= ~CTRL_ADC_EN;
+				outl(s->ctrl, s->io+ES1370_REG_CONTROL);
+				s->dma_adc.error++;
+			}
+		}
+	}
+	/* update DAC1 pointer */
+	if (s->ctrl & CTRL_DAC1_EN) {
+		diff = get_hwptr(s, &s->dma_dac1, ES1370_REG_DAC1_FRAMECNT);
+		s->dma_dac1.total_bytes += diff;
+		if (s->dma_dac1.mapped) {
+			s->dma_dac1.count += diff;
+			if (s->dma_dac1.count >= (signed)s->dma_dac1.fragsize)
+				wake_up(&s->dma_dac1.wait);
+		} else {
+			s->dma_dac1.count -= diff;
+			if (s->dma_dac1.count <= 0) {
+				s->ctrl &= ~CTRL_DAC1_EN;
+				outl(s->ctrl, s->io+ES1370_REG_CONTROL);
+				s->dma_dac1.error++;
+			} else if (s->dma_dac1.count <= (signed)s->dma_dac1.fragsize && !s->dma_dac1.endcleared) {
+				clear_advance(s->dma_dac1.rawbuf, s->dma_dac1.dmasize, s->dma_dac1.swptr, 
+					      s->dma_dac1.fragsize, (s->sctrl & SCTRL_P1SEB) ? 0 : 0x80);
+				s->dma_dac1.endcleared = 1;
+			}
+			if (s->dma_dac1.count + (signed)s->dma_dac1.fragsize <= (signed)s->dma_dac1.dmasize)
+				wake_up(&s->dma_dac1.wait);
+		}
+	}
+	/* update DAC2 pointer */
+	if (s->ctrl & CTRL_DAC2_EN) {
+		diff = get_hwptr(s, &s->dma_dac2, ES1370_REG_DAC2_FRAMECNT);
+		s->dma_dac2.total_bytes += diff;
+		if (s->dma_dac2.mapped) {
+			s->dma_dac2.count += diff;
+			if (s->dma_dac2.count >= (signed)s->dma_dac2.fragsize)
+				wake_up(&s->dma_dac2.wait);
+		} else {
+			s->dma_dac2.count -= diff;
+			if (s->dma_dac2.count <= 0) {
+				s->ctrl &= ~CTRL_DAC2_EN;
+				outl(s->ctrl, s->io+ES1370_REG_CONTROL);
+				s->dma_dac2.error++;
+			} else if (s->dma_dac2.count <= (signed)s->dma_dac2.fragsize && !s->dma_dac2.endcleared) {
+				clear_advance(s->dma_dac2.rawbuf, s->dma_dac2.dmasize, s->dma_dac2.swptr, 
+					      s->dma_dac2.fragsize, (s->sctrl & SCTRL_P2SEB) ? 0 : 0x80);
+				s->dma_dac2.endcleared = 1;
+			}
+			if (s->dma_dac2.count + (signed)s->dma_dac2.fragsize <= (signed)s->dma_dac2.dmasize)
+				wake_up(&s->dma_dac2.wait);
+		}
+	}
+}
+
+/* hold spinlock for the following! */
+static void es1370_handle_midi(struct es1370_state *s)
+{
+	unsigned char ch;
+	int wake;
+
+	if (!(s->ctrl & CTRL_UART_EN))
+		return;
+	wake = 0;
+	while (inb(s->io+ES1370_REG_UART_STATUS) & USTAT_RXRDY) {
+		ch = inb(s->io+ES1370_REG_UART_DATA);
+		if (s->midi.icnt < MIDIINBUF) {
+			s->midi.ibuf[s->midi.iwr] = ch;
+			s->midi.iwr = (s->midi.iwr + 1) % MIDIINBUF;
+			s->midi.icnt++;
+		}
+		wake = 1;
+	}
+	if (wake)
+		wake_up(&s->midi.iwait);
+	wake = 0;
+	while ((inb(s->io+ES1370_REG_UART_STATUS) & USTAT_TXRDY) && s->midi.ocnt > 0) {
+		outb(s->midi.obuf[s->midi.ord], s->io+ES1370_REG_UART_DATA);
+		s->midi.ord = (s->midi.ord + 1) % MIDIOUTBUF;
+		s->midi.ocnt--;
+		if (s->midi.ocnt < MIDIOUTBUF-16)
+			wake = 1;
+	}
+	if (wake)
+		wake_up(&s->midi.owait);
+	outb((s->midi.ocnt > 0) ? UCTRL_RXINTEN | UCTRL_ENA_TXINT : UCTRL_RXINTEN, s->io+ES1370_REG_UART_CONTROL);
+}
+
+static irqreturn_t es1370_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+        struct es1370_state *s = (struct es1370_state *)dev_id;
+	unsigned int intsrc, sctl;
+	
+	/* fastpath out, to ease interrupt sharing */
+	intsrc = inl(s->io+ES1370_REG_STATUS);
+	if (!(intsrc & 0x80000000))
+		return IRQ_NONE;
+	spin_lock(&s->lock);
+	/* clear audio interrupts first */
+	sctl = s->sctrl;
+	if (intsrc & STAT_ADC)
+		sctl &= ~SCTRL_R1INTEN;
+	if (intsrc & STAT_DAC1)
+		sctl &= ~SCTRL_P1INTEN;
+	if (intsrc & STAT_DAC2)
+		sctl &= ~SCTRL_P2INTEN;
+	outl(sctl, s->io+ES1370_REG_SERIAL_CONTROL);
+	outl(s->sctrl, s->io+ES1370_REG_SERIAL_CONTROL);
+	es1370_update_ptr(s);
+	es1370_handle_midi(s);
+	spin_unlock(&s->lock);
+	return IRQ_HANDLED;
+}
+
+/* --------------------------------------------------------------------- */
+
+static const char invalid_magic[] = KERN_CRIT "es1370: invalid magic value\n";
+
+#define VALIDATE_STATE(s)                         \
+({                                                \
+	if (!(s) || (s)->magic != ES1370_MAGIC) { \
+		printk(invalid_magic);            \
+		return -ENXIO;                    \
+	}                                         \
+})
+
+/* --------------------------------------------------------------------- */
+
+static const struct {
+	unsigned volidx:4;
+	unsigned left:4;
+	unsigned right:4;
+	unsigned stereo:1;
+	unsigned recmask:13;
+	unsigned avail:1;
+} mixtable[SOUND_MIXER_NRDEVICES] = {
+	[SOUND_MIXER_VOLUME] = { 0, 0x0, 0x1, 1, 0x0000, 1 },   /* master */
+	[SOUND_MIXER_PCM]    = { 1, 0x2, 0x3, 1, 0x0400, 1 },   /* voice */
+	[SOUND_MIXER_SYNTH]  = { 2, 0x4, 0x5, 1, 0x0060, 1 },   /* FM */
+	[SOUND_MIXER_CD]     = { 3, 0x6, 0x7, 1, 0x0006, 1 },   /* CD */
+	[SOUND_MIXER_LINE]   = { 4, 0x8, 0x9, 1, 0x0018, 1 },   /* Line */
+	[SOUND_MIXER_LINE1]  = { 5, 0xa, 0xb, 1, 0x1800, 1 },   /* AUX */
+	[SOUND_MIXER_LINE2]  = { 6, 0xc, 0x0, 0, 0x0100, 1 },   /* Mono1 */
+	[SOUND_MIXER_LINE3]  = { 7, 0xd, 0x0, 0, 0x0200, 1 },   /* Mono2 */
+	[SOUND_MIXER_MIC]    = { 8, 0xe, 0x0, 0, 0x0001, 1 },   /* Mic */
+	[SOUND_MIXER_OGAIN]  = { 9, 0xf, 0x0, 0, 0x0000, 1 }    /* mono out */
+};
+
+static void set_recsrc(struct es1370_state *s, unsigned int val)
+{
+	unsigned int i, j;
+
+	for (j = i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
+		if (!(val & (1 << i)))
+			continue;
+		if (!mixtable[i].recmask) {
+			val &= ~(1 << i);
+			continue;
+		}
+		j |= mixtable[i].recmask;
+	}
+	s->mix.recsrc = val;
+	wrcodec(s, 0x12, j & 0xd5);
+	wrcodec(s, 0x13, j & 0xaa);
+	wrcodec(s, 0x14, (j >> 8) & 0x17);
+	wrcodec(s, 0x15, (j >> 8) & 0x0f);
+	i = (j & 0x37f) | ((j << 1) & 0x3000) | 0xc60;
+	if (!s->mix.imix) {
+		i &= 0xff60;  /* mute record and line monitor */
+	}
+	wrcodec(s, 0x10, i);
+	wrcodec(s, 0x11, i >> 8);
+}
+
+static int mixer_ioctl(struct es1370_state *s, unsigned int cmd, unsigned long arg)
+{
+	unsigned long flags;
+	int i, val;
+	unsigned char l, r, rl, rr;
+	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) {
+			s->mix.micpreamp = !!val;
+			wrcodec(s, 0x19, s->mix.micpreamp);
+		}
+		return put_user(s->mix.micpreamp, p);
+	}
+	if (cmd == SOUND_MIXER_PRIVATE2) {
+		/* enable/disable/query use of linein as second lineout */
+		if (get_user(val, p))
+			return -EFAULT;
+		if (val != -1) {
+			spin_lock_irqsave(&s->lock, flags);
+			if (val)
+				s->ctrl |= CTRL_XCTL0;
+			else
+				s->ctrl &= ~CTRL_XCTL0;
+			outl(s->ctrl, s->io+ES1370_REG_CONTROL);
+			spin_unlock_irqrestore(&s->lock, flags);
+		}
+		return put_user((s->ctrl & CTRL_XCTL0) ? 1 : 0, p);
+	}
+	if (cmd == SOUND_MIXER_PRIVATE3) {
+		/* enable/disable/query microphone impedance setting */
+		if (get_user(val, p))
+			return -EFAULT;
+		if (val != -1) {
+			spin_lock_irqsave(&s->lock, flags);
+			if (val)
+				s->ctrl |= CTRL_XCTL1;
+			else
+				s->ctrl &= ~CTRL_XCTL1;
+			outl(s->ctrl, s->io+ES1370_REG_CONTROL);
+			spin_unlock_irqrestore(&s->lock, flags);
+		}
+		return put_user((s->ctrl & CTRL_XCTL1) ? 1 : 0, p);
+	}
+        if (cmd == SOUND_MIXER_INFO) {
+		mixer_info info;
+		strncpy(info.id, "ES1370", sizeof(info.id));
+		strncpy(info.name, "Ensoniq ES1370", 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, "ES1370", sizeof(info.id));
+		strncpy(info.name, "Ensoniq ES1370", 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(s->mix.recsrc, p);
+			
+                case SOUND_MIXER_DEVMASK: /* Arg contains a bit for each supported device */
+			val = SOUND_MASK_IMIX;
+			for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
+				if (mixtable[i].avail)
+					val |= 1 << i;
+			return put_user(val, p);
+
+                case SOUND_MIXER_RECMASK: /* Arg contains a bit for each supported recording source */
+			for (val = i = 0; i < SOUND_MIXER_NRDEVICES; i++)
+				if (mixtable[i].recmask)
+					val |= 1 << i;
+			return put_user(val, p);
+			
+                case SOUND_MIXER_STEREODEVS: /* Mixer channels supporting stereo */
+			for (val = i = 0; i < SOUND_MIXER_NRDEVICES; i++)
+				if (mixtable[i].stereo)
+					val |= 1 << i;
+			return put_user(val, p);
+			
+                case SOUND_MIXER_CAPS:
+			return put_user(0, p);
+		
+		case SOUND_MIXER_IMIX:
+			return put_user(s->mix.imix, p);
+
+		default:
+			i = _IOC_NR(cmd);
+                        if (i >= SOUND_MIXER_NRDEVICES || !mixtable[i].avail)
+                                return -EINVAL;
+			return put_user(s->mix.vol[mixtable[i].volidx], p);
+		}
+	}
+        if (_SIOC_DIR(cmd) != (_SIOC_READ|_SIOC_WRITE)) 
+		return -EINVAL;
+	s->mix.modcnt++;
+	switch (_IOC_NR(cmd)) {
+
+	case SOUND_MIXER_IMIX:
+		if (get_user(s->mix.imix, p))
+			return -EFAULT;
+		set_recsrc(s, s->mix.recsrc);
+		return 0;
+
+	case SOUND_MIXER_RECSRC: /* Arg contains a bit for each recording source */
+		if (get_user(val, p))
+			return -EFAULT;
+		set_recsrc(s, val);
+		return 0;
+
+	default:
+		i = _IOC_NR(cmd);
+		if (i >= SOUND_MIXER_NRDEVICES || !mixtable[i].avail)
+			return -EINVAL;
+		if (get_user(val, p))
+			return -EFAULT;
+		l = val & 0xff;
+		if