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Diffstat (limited to 'sound/oss/maestro.c')
| -rw-r--r-- | sound/oss/maestro.c | 3832 |
1 files changed, 3832 insertions, 0 deletions
diff --git a/sound/oss/maestro.c b/sound/oss/maestro.c new file mode 100644 index 00000000000..52d2db4bc31 --- /dev/null +++ b/sound/oss/maestro.c @@ -0,0 +1,3832 @@ +/***************************************************************************** + * + * ESS Maestro/Maestro-2/Maestro-2E driver for Linux 2.[23].x + * + * 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. + * + * (c) Copyright 1999 Alan Cox <alan.cox@linux.org> + * + * Based heavily on SonicVibes.c: + * Copyright (C) 1998-1999 Thomas Sailer (sailer@ife.ee.ethz.ch) + * + * Heavily modified by Zach Brown <zab@zabbo.net> based on lunch + * with ESS engineers. Many thanks to Howard Kim for providing + * contacts and hardware. Honorable mention goes to Eric + * Brombaugh for all sorts of things. Best regards to the + * proprietors of Hack Central for fine lodging. + * + * Supported devices: + * /dev/dsp0-3 standard /dev/dsp device, (mostly) OSS compatible + * /dev/mixer standard /dev/mixer device, (mostly) OSS compatible + * + * Hardware Description + * + * A working Maestro setup contains the Maestro chip wired to a + * codec or 2. In the Maestro we have the APUs, the ASSP, and the + * Wavecache. The APUs can be though of as virtual audio routing + * channels. They can take data from a number of sources and perform + * basic encodings of the data. The wavecache is a storehouse for + * PCM data. Typically it deals with PCI and interracts with the + * APUs. The ASSP is a wacky DSP like device that ESS is loth + * to release docs on. Thankfully it isn't required on the Maestro + * until you start doing insane things like FM emulation and surround + * encoding. The codecs are almost always AC-97 compliant codecs, + * but it appears that early Maestros may have had PT101 (an ESS + * part?) wired to them. The only real difference in the Maestro + * families is external goop like docking capability, memory for + * the ASSP, and initialization differences. + * + * Driver Operation + * + * We only drive the APU/Wavecache as typical DACs and drive the + * mixers in the codecs. There are 64 APUs. We assign 6 to each + * /dev/dsp? device. 2 channels for output, and 4 channels for + * input. + * + * Each APU can do a number of things, but we only really use + * 3 basic functions. For playback we use them to convert PCM + * data fetched over PCI by the wavecahche into analog data that + * is handed to the codec. One APU for mono, and a pair for stereo. + * When in stereo, the combination of smarts in the APU and Wavecache + * decide which wavecache gets the left or right channel. + * + * For record we still use the old overly mono system. For each in + * coming channel the data comes in from the codec, through a 'input' + * APU, through another rate converter APU, and then into memory via + * the wavecache and PCI. If its stereo, we mash it back into LRLR in + * software. The pass between the 2 APUs is supposedly what requires us + * to have a 512 byte buffer sitting around in wavecache/memory. + * + * The wavecache makes our life even more fun. First off, it can + * only address the first 28 bits of PCI address space, making it + * useless on quite a few architectures. Secondly, its insane. + * It claims to fetch from 4 regions of PCI space, each 4 meg in length. + * But that doesn't really work. You can only use 1 region. So all our + * allocations have to be in 4meg of each other. Booo. Hiss. + * So we have a module parameter, dsps_order, that is the order of + * the number of dsps to provide. All their buffer space is allocated + * on open time. The sonicvibes OSS routines we inherited really want + * power of 2 buffers, so we have all those next to each other, then + * 512 byte regions for the recording wavecaches. This ends up + * wasting quite a bit of memory. The only fixes I can see would be + * getting a kernel allocator that could work in zones, or figuring out + * just how to coerce the WP into doing what we want. + * + * The indirection of the various registers means we have to spinlock + * nearly all register accesses. We have the main register indirection + * like the wave cache, maestro registers, etc. Then we have beasts + * like the APU interface that is indirect registers gotten at through + * the main maestro indirection. Ouch. We spinlock around the actual + * ports on a per card basis. This means spinlock activity at each IO + * operation, but the only IO operation clusters are in non critical + * paths and it makes the code far easier to follow. Interrupts are + * blocked while holding the locks because the int handler has to + * get at some of them :(. The mixer interface doesn't, however. + * We also have an OSS state lock that is thrown around in a few + * places. + * + * This driver has brute force APM suspend support. We catch suspend + * notifications and stop all work being done on the chip. Any people + * that try between this shutdown and the real suspend operation will + * be put to sleep. When we resume we restore our software state on + * the chip and wake up the people that were using it. The code thats + * being used now is quite dirty and assumes we're on a uni-processor + * machine. Much of it will need to be cleaned up for SMP ACPI or + * similar. + * + * We also pay attention to PCI power management now. The driver + * will power down units of the chip that it knows aren't needed. + * The WaveProcessor and company are only powered on when people + * have /dev/dsp*s open. On removal the driver will + * power down the maestro entirely. There could still be + * trouble with BIOSen that magically change power states + * themselves, but we'll see. + * + * History + * v0.15 - May 21 2001 - Marcus Meissner <mm@caldera.de> + * Ported to Linux 2.4 PCI API. Some clean ups, global devs list + * removed (now using pci device driver data). + * PM needs to be polished still. Bumped version. + * (still kind of v0.14) May 13 2001 - Ben Pfaff <pfaffben@msu.edu> + * Add support for 978 docking and basic hardware volume control + * (still kind of v0.14) Nov 23 - Alan Cox <alan@redhat.com> + * Add clocking= for people with seriously warped hardware + * (still v0.14) Nov 10 2000 - Bartlomiej Zolnierkiewicz <bkz@linux-ide.org> + * add __init to maestro_ac97_init() and maestro_install() + * (still based on v0.14) Mar 29 2000 - Zach Brown <zab@redhat.com> + * move to 2.3 power management interface, which + * required hacking some suspend/resume/check paths + * make static compilation work + * v0.14 - Jan 28 2000 - Zach Brown <zab@redhat.com> + * add PCI power management through ACPI regs. + * we now shut down on machine reboot/halt + * leave scary PCI config items alone (isa stuff, mostly) + * enable 1921s, it seems only mine was broke. + * fix swapped left/right pcm dac. har har. + * up bob freq, increase buffers, fix pointers at underflow + * silly compilation problems + * v0.13 - Nov 18 1999 - Zach Brown <zab@redhat.com> + * fix nec Versas? man would that be cool. + * v0.12 - Nov 12 1999 - Zach Brown <zab@redhat.com> + * brown bag volume max fix.. + * v0.11 - Nov 11 1999 - Zach Brown <zab@redhat.com> + * use proper stereo apu decoding, mmap/write should work. + * make volume sliders more useful, tweak rate calculation. + * fix lame 8bit format reporting bug. duh. apm apu saving buglet also + * fix maestro 1 clock freq "bug", remove pt101 support + * v0.10 - Oct 28 1999 - Zach Brown <zab@redhat.com> + * aha, so, sometimes the WP writes a status word to offset 0 + * from one of the PCMBARs. rearrange allocation accordingly.. + * cheers again to Eric for being a good hacker in investigating this. + * Jeroen Hoogervorst submits 7500 fix out of nowhere. yay. :) + * v0.09 - Oct 23 1999 - Zach Brown <zab@redhat.com> + * added APM support. + * re-order something such that some 2Es now work. Magic! + * new codec reset routine. made some codecs come to life. + * fix clear_advance, sync some control with ESS. + * now write to all base regs to be paranoid. + * v0.08 - Oct 20 1999 - Zach Brown <zab@redhat.com> + * Fix initial buflen bug. I am so smart. also smp compiling.. + * I owe Eric yet another beer: fixed recmask, igain, + * muting, and adc sync consistency. Go Team. + * v0.07 - Oct 4 1999 - Zach Brown <zab@redhat.com> + * tweak adc/dac, formating, and stuff to allow full duplex + * allocate dsps memory at open() so we can fit in the wavecache window + * fix wavecache braindamage. again. no more scribbling? + * fix ess 1921 codec bug on some laptops. + * fix dumb pci scanning bug + * started 2.3 cleanup, redid spinlocks, little cleanups + * v0.06 - Sep 20 1999 - Zach Brown <zab@redhat.com> + * fix wavecache thinkos. limit to 1 /dev/dsp. + * eric is wearing his thinking toque this week. + * spotted apu mode bugs and gain ramping problem + * don't touch weird mixer regs, make recmask optional + * fixed igain inversion, defaults for mixers, clean up rec_start + * make mono recording work. + * report subsystem stuff, please send reports. + * littles: parallel out, amp now + * v0.05 - Sep 17 1999 - Zach Brown <zab@redhat.com> + * merged and fixed up Eric's initial recording code + * munged format handling to catch misuse, needs rewrite. + * revert ring bus init, fixup shared int, add pci busmaster setting + * fix mixer oss interface, fix mic mute and recmask + * mask off unsupported mixers, reset with all 1s, modularize defaults + * make sure bob is running while we need it + * got rid of device limit, initial minimal apm hooks + * pull out dead code/includes, only allow multimedia/audio maestros + * v0.04 - Sep 01 1999 - Zach Brown <zab@redhat.com> + * copied memory leak fix from sonicvibes driver + * different ac97 reset, play with 2.0 ac97, simplify ring bus setup + * bob freq code, region sanity, jitter sync fix; all from Eric + * + * TODO + * fix bob frequency + * endianness + * do smart things with ac97 2.0 bits. + * dual codecs + * leave 54->61 open + * + * it also would be fun to have a mode that would not use pci dma at all + * but would copy into the wavecache on board memory and use that + * on architectures that don't like the maestro's pci dma ickiness. + */ + +/*****************************************************************************/ + +#include <linux/module.h> +#include <linux/sched.h> +#include <linux/smp_lock.h> +#include <linux/string.h> +#include <linux/ctype.h> +#include <linux/ioport.h> +#include <linux/delay.h> +#include <linux/sound.h> +#include <linux/slab.h> +#include <linux/soundcard.h> +#include <linux/pci.h> +#include <linux/spinlock.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/poll.h> +#include <linux/reboot.h> +#include <linux/bitops.h> +#include <linux/wait.h> + +#include <asm/current.h> +#include <asm/dma.h> +#include <asm/io.h> +#include <asm/page.h> +#include <asm/uaccess.h> + +#include <linux/pm.h> +static int maestro_pm_callback(struct pm_dev *dev, pm_request_t rqst, void *d); + +#include "maestro.h" + +static struct pci_driver maestro_pci_driver; + +/* --------------------------------------------------------------------- */ + +#define M_DEBUG 1 + +#ifdef M_DEBUG +static int debug; +#define M_printk(args...) {if (debug) printk(args);} +#else +#define M_printk(x) +#endif + +/* we try to setup 2^(dsps_order) /dev/dsp devices */ +static int dsps_order; +/* whether or not we mess around with power management */ +static int use_pm=2; /* set to 1 for force */ +/* clocking for broken hardware - a few laptops seem to use a 50Khz clock + ie insmod with clocking=50000 or so */ + +static int clocking=48000; + +MODULE_AUTHOR("Zach Brown <zab@zabbo.net>, Alan Cox <alan@redhat.com>"); +MODULE_DESCRIPTION("ESS Maestro Driver"); +MODULE_LICENSE("GPL"); + +#ifdef M_DEBUG +module_param(debug, bool, 0644); +#endif +module_param(dsps_order, int, 0); +module_param(use_pm, int, 0); +module_param(clocking, int, 0); + +/* --------------------------------------------------------------------- */ +#define DRIVER_VERSION "0.15" + +#ifndef PCI_VENDOR_ESS +#define PCI_VENDOR_ESS 0x125D +#define PCI_DEVICE_ID_ESS_ESS1968 0x1968 /* Maestro 2 */ +#define PCI_DEVICE_ID_ESS_ESS1978 0x1978 /* Maestro 2E */ + +#define PCI_VENDOR_ESS_OLD 0x1285 /* Platform Tech, + the people the maestro + was bought from */ +#define PCI_DEVICE_ID_ESS_ESS0100 0x0100 /* maestro 1 */ +#endif /* PCI_VENDOR_ESS */ + +#define ESS_CHAN_HARD 0x100 + +/* NEC Versas ? */ +#define NEC_VERSA_SUBID1 0x80581033 +#define NEC_VERSA_SUBID2 0x803c1033 + + +/* changed so that I could actually find all the + references and fix them up. it's a little more readable now. */ +#define ESS_FMT_STEREO 0x01 +#define ESS_FMT_16BIT 0x02 +#define ESS_FMT_MASK 0x03 +#define ESS_DAC_SHIFT 0 +#define ESS_ADC_SHIFT 4 + +#define ESS_STATE_MAGIC 0x125D1968 +#define ESS_CARD_MAGIC 0x19283746 + +#define DAC_RUNNING 1 +#define ADC_RUNNING 2 + +#define MAX_DSP_ORDER 2 +#define MAX_DSPS (1<<MAX_DSP_ORDER) +#define NR_DSPS (1<<dsps_order) +#define NR_IDRS 32 + +#define NR_APUS 64 +#define NR_APU_REGS 16 + +/* acpi states */ +enum { + ACPI_D0=0, + ACPI_D1, + ACPI_D2, + ACPI_D3 +}; + +/* bits in the acpi masks */ +#define ACPI_12MHZ ( 1 << 15) +#define ACPI_24MHZ ( 1 << 14) +#define ACPI_978 ( 1 << 13) +#define ACPI_SPDIF ( 1 << 12) +#define ACPI_GLUE ( 1 << 11) +#define ACPI__10 ( 1 << 10) /* reserved */ +#define ACPI_PCIINT ( 1 << 9) +#define ACPI_HV ( 1 << 8) /* hardware volume */ +#define ACPI_GPIO ( 1 << 7) +#define ACPI_ASSP ( 1 << 6) +#define ACPI_SB ( 1 << 5) /* sb emul */ +#define ACPI_FM ( 1 << 4) /* fm emul */ +#define ACPI_RB ( 1 << 3) /* ringbus / aclink */ +#define ACPI_MIDI ( 1 << 2) +#define ACPI_GP ( 1 << 1) /* game port */ +#define ACPI_WP ( 1 << 0) /* wave processor */ + +#define ACPI_ALL (0xffff) +#define ACPI_SLEEP (~(ACPI_SPDIF|ACPI_ASSP|ACPI_SB|ACPI_FM| \ + ACPI_MIDI|ACPI_GP|ACPI_WP)) +#define ACPI_NONE (ACPI__10) + +/* these masks indicate which units we care about at + which states */ +static u16 acpi_state_mask[] = { + [ACPI_D0] = ACPI_ALL, + [ACPI_D1] = ACPI_SLEEP, + [ACPI_D2] = ACPI_SLEEP, + [ACPI_D3] = ACPI_NONE +}; + +static char version[] __devinitdata = +KERN_INFO "maestro: version " DRIVER_VERSION " time " __TIME__ " " __DATE__ "\n"; + + + +static const unsigned sample_size[] = { 1, 2, 2, 4 }; +static const unsigned sample_shift[] = { 0, 1, 1, 2 }; + +enum card_types_t { + TYPE_MAESTRO, + TYPE_MAESTRO2, + TYPE_MAESTRO2E +}; + +static const char *card_names[]={ + [TYPE_MAESTRO] = "ESS Maestro", + [TYPE_MAESTRO2] = "ESS Maestro 2", + [TYPE_MAESTRO2E] = "ESS Maestro 2E" +}; + +static int clock_freq[]={ + [TYPE_MAESTRO] = (49152000L / 1024L), + [TYPE_MAESTRO2] = (50000000L / 1024L), + [TYPE_MAESTRO2E] = (50000000L / 1024L) +}; + +static int maestro_notifier(struct notifier_block *nb, unsigned long event, void *buf); + +static struct notifier_block maestro_nb = {maestro_notifier, NULL, 0}; + +/* --------------------------------------------------------------------- */ + +struct ess_state { + unsigned int magic; + /* FIXME: we probably want submixers in here, but only one record pair */ + u8 apu[6]; /* l/r output, l/r intput converters, l/r input apus */ + u8 apu_mode[6]; /* Running mode for this APU */ + u8 apu_pan[6]; /* Panning setup for this APU */ + u32 apu_base[6]; /* base address for this apu */ + struct ess_card *card; /* Card info */ + /* wave stuff */ + unsigned int rateadc, ratedac; + unsigned char fmt, enable; + + int index; + + /* this locks around the oss state in the driver */ + spinlock_t lock; + /* only let 1 be opening at a time */ + struct semaphore open_sem; + wait_queue_head_t open_wait; + mode_t open_mode; + + /* soundcore stuff */ + int dev_audio; + + struct dmabuf { + void *rawbuf; + unsigned buforder; + unsigned numfrag; + unsigned fragshift; + /* XXX zab - swptr only in here so that it can be referenced by + clear_advance, as far as I can tell :( */ + 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; /* our oss buffers are ready to go */ + unsigned endcleared:1; + unsigned ossfragshift; + int ossmaxfrags; + unsigned subdivision; + u16 base; /* Offset for ptr */ + } dma_dac, dma_adc; + + /* pointer to each dsp?s piece of the apu->src buffer page */ + void *mixbuf; + +}; + +struct ess_card { + unsigned int magic; + + /* We keep maestro cards in a linked list */ + struct ess_card *next; + + int dev_mixer; + + int card_type; + + /* as most of this is static, + perhaps it should be a pointer to a global struct */ + struct mixer_goo { + int modcnt; + int supported_mixers; + int stereo_mixers; + int record_sources; + /* the caller must guarantee arg sanity before calling these */ +/* int (*read_mixer)(struct ess_card *card, int index);*/ + void (*write_mixer)(struct ess_card *card,int mixer, unsigned int left,unsigned int right); + int (*recmask_io)(struct ess_card *card,int rw,int mask); + unsigned int mixer_state[SOUND_MIXER_NRDEVICES]; + } mix; + + int power_regs; + + int in_suspend; + wait_queue_head_t suspend_queue; + + struct ess_state channels[MAX_DSPS]; + u16 maestro_map[NR_IDRS]; /* Register map */ + /* we have to store this junk so that we can come back from a + suspend */ + u16 apu_map[NR_APUS][NR_APU_REGS]; /* contents of apu regs */ + + /* this locks around the physical registers on the card */ + spinlock_t lock; + + /* memory for this card.. wavecache limited :(*/ + void *dmapages; + int dmaorder; + + /* hardware resources */ + struct pci_dev *pcidev; + u32 iobase; + u32 irq; + + int bob_freq; + char dsps_open; + + int dock_mute_vol; +}; + +static void set_mixer(struct ess_card *card,unsigned int mixer, unsigned int val ); + +static 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 check_suspend(struct ess_card *card); + +/* --------------------------------------------------------------------- */ + + +/* + * ESS Maestro AC97 codec programming interface. + */ + +static void maestro_ac97_set(struct ess_card *card, u8 cmd, u16 val) +{ + int io = card->iobase; + int i; + /* + * Wait for the codec bus to be free + */ + + check_suspend(card); + + for(i=0;i<10000;i++) + { + if(!(inb(io+ESS_AC97_INDEX)&1)) + break; + } + /* + * Write the bus + */ + outw(val, io+ESS_AC97_DATA); + mdelay(1); + outb(cmd, io+ESS_AC97_INDEX); + mdelay(1); +} + +static u16 maestro_ac97_get(struct ess_card *card, u8 cmd) +{ + int io = card->iobase; + int sanity=10000; + u16 data; + int i; + + check_suspend(card); + /* + * Wait for the codec bus to be free + */ + + for(i=0;i<10000;i++) + { + if(!(inb(io+ESS_AC97_INDEX)&1)) + break; + } + + outb(cmd|0x80, io+ESS_AC97_INDEX); + mdelay(1); + + while(inb(io+ESS_AC97_INDEX)&1) + { + sanity--; + if(!sanity) + { + printk(KERN_ERR "maestro: ac97 codec timeout reading 0x%x.\n",cmd); + return 0; + } + } + data=inw(io+ESS_AC97_DATA); + mdelay(1); + return data; +} + +/* OSS interface to the ac97s.. */ + +#define AC97_STEREO_MASK (SOUND_MASK_VOLUME|\ + SOUND_MASK_PCM|SOUND_MASK_LINE|SOUND_MASK_CD|\ + SOUND_MASK_VIDEO|SOUND_MASK_LINE1|SOUND_MASK_IGAIN) + +#define AC97_SUPPORTED_MASK (AC97_STEREO_MASK | \ + SOUND_MASK_BASS|SOUND_MASK_TREBLE|SOUND_MASK_MIC|\ + SOUND_MASK_SPEAKER) + +#define AC97_RECORD_MASK (SOUND_MASK_MIC|\ + SOUND_MASK_CD| SOUND_MASK_VIDEO| SOUND_MASK_LINE1| SOUND_MASK_LINE|\ + SOUND_MASK_PHONEIN) + +#define supported_mixer(CARD,FOO) ( CARD->mix.supported_mixers & (1<<FOO) ) + +/* this table has default mixer values for all OSS mixers. + be sure to fill it in if you add oss mixers + to anyone's supported mixer defines */ + +static unsigned int mixer_defaults[SOUND_MIXER_NRDEVICES] = { + [SOUND_MIXER_VOLUME] = 0x3232, + [SOUND_MIXER_BASS] = 0x3232, + [SOUND_MIXER_TREBLE] = 0x3232, + [SOUND_MIXER_SPEAKER] = 0x3232, + [SOUND_MIXER_MIC] = 0x8000, /* annoying */ + [SOUND_MIXER_LINE] = 0x3232, + [SOUND_MIXER_CD] = 0x3232, + [SOUND_MIXER_VIDEO] = 0x3232, + [SOUND_MIXER_LINE1] = 0x3232, + [SOUND_MIXER_PCM] = 0x3232, + [SOUND_MIXER_IGAIN] = 0x3232 +}; + +static struct ac97_mixer_hw { + unsigned char offset; + int scale; +} ac97_hw[SOUND_MIXER_NRDEVICES]= { + [SOUND_MIXER_VOLUME] = {0x02,63}, + [SOUND_MIXER_BASS] = {0x08,15}, + [SOUND_MIXER_TREBLE] = {0x08,15}, + [SOUND_MIXER_SPEAKER] = {0x0a,15}, + [SOUND_MIXER_MIC] = {0x0e,31}, + [SOUND_MIXER_LINE] = {0x10,31}, + [SOUND_MIXER_CD] = {0x12,31}, + [SOUND_MIXER_VIDEO] = {0x14,31}, + [SOUND_MIXER_LINE1] = {0x16,31}, + [SOUND_MIXER_PCM] = {0x18,31}, + [SOUND_MIXER_IGAIN] = {0x1c,15} +}; + +#if 0 /* *shrug* removed simply because we never used it. + feel free to implement again if needed */ + +/* reads the given OSS mixer from the ac97 + the caller must have insured that the ac97 knows + about that given mixer, and should be holding a + spinlock for the card */ +static int ac97_read_mixer(struct ess_card *card, int mixer) +{ + u16 val; + int ret=0; + struct ac97_mixer_hw *mh = &ac97_hw[mixer]; + + val = maestro_ac97_get(card, mh->offset); + + if(AC97_STEREO_MASK & (1<<mixer)) { + /* nice stereo mixers .. */ + int left,right; + + left = (val >> 8) & 0x7f; + right = val & 0x7f; + + if (mixer == SOUND_MIXER_IGAIN) { + right = (right * 100) / mh->scale; + left = (left * 100) / mh->scale; + } else { + right = 100 - ((right * 100) / mh->scale); + left = 100 - ((left * 100) / mh->scale); + } + + ret = left | (right << 8); + } else if (mixer == SOUND_MIXER_SPEAKER) { + ret = 100 - ((((val & 0x1e)>>1) * 100) / mh->scale); + } else if (mixer == SOUND_MIXER_MIC) { + ret = 100 - (((val & 0x1f) * 100) / mh->scale); + /* the low bit is optional in the tone sliders and masking + it lets is avoid the 0xf 'bypass'.. */ + } else if (mixer == SOUND_MIXER_BASS) { + ret = 100 - ((((val >> 8) & 0xe) * 100) / mh->scale); + } else if (mixer == SOUND_MIXER_TREBLE) { + ret = 100 - (((val & 0xe) * 100) / mh->scale); + } + + M_printk("read mixer %d (0x%x) %x -> %x\n",mixer,mh->offset,val,ret); + + return ret; +} +#endif + +/* write the OSS encoded volume to the given OSS encoded mixer, + again caller's job to make sure all is well in arg land, + call with spinlock held */ + +/* linear scale -> log */ +static unsigned char lin2log[101] = +{ +0, 0 , 15 , 23 , 30 , 34 , 38 , 42 , 45 , 47 , +50 , 52 , 53 , 55 , 57 , 58 , 60 , 61 , 62 , +63 , 65 , 66 , 67 , 68 , 69 , 69 , 70 , 71 , +72 , 73 , 73 , 74 , 75 , 75 , 76 , 77 , 77 , +78 , 78 , 79 , 80 , 80 , 81 , 81 , 82 , 82 , +83 , 83 , 84 , 84 , 84 , 85 , 85 , 86 , 86 , +87 , 87 , 87 , 88 , 88 , 88 , 89 , 89 , 89 , +90 , 90 , 90 , 91 , 91 , 91 , 92 , 92 , 92 , +93 , 93 , 93 , 94 , 94 , 94 , 94 , 95 , 95 , +95 , 95 , 96 , 96 , 96 , 96 , 97 , 97 , 97 , +97 , 98 , 98 , 98 , 98 , 99 , 99 , 99 , 99 , 99 +}; + +static void ac97_write_mixer(struct ess_card *card,int mixer, unsigned int left, unsigned int right) +{ + u16 val=0; + struct ac97_mixer_hw *mh = &ac97_hw[mixer]; + + M_printk("wrote mixer %d (0x%x) %d,%d",mixer,mh->offset,left,right); + + if(AC97_STEREO_MASK & (1<<mixer)) { + /* stereo mixers, mute them if we can */ + + if (mixer == SOUND_MIXER_IGAIN) { + /* igain's slider is reversed.. */ + right = (right * mh->scale) / 100; + left = (left * mh->scale) / 100; + if ((left == 0) && (right == 0)) + val |= 0x8000; + } else if (mixer == SOUND_MIXER_PCM || mixer == SOUND_MIXER_CD) { + /* log conversion seems bad for them */ + if ((left == 0) && (right == 0)) + val = 0x8000; + right = ((100 - right) * mh->scale) / 100; + left = ((100 - left) * mh->scale) / 100; + } else { + /* log conversion for the stereo controls */ + if((left == 0) && (right == 0)) + val = 0x8000; + right = ((100 - lin2log[right]) * mh->scale) / 100; + left = ((100 - lin2log[left]) * mh->scale) / 100; + } + + val |= (left << 8) | right; + + } else if (mixer == SOUND_MIXER_SPEAKER) { + val = (((100 - left) * mh->scale) / 100) << 1; + } else if (mixer == SOUND_MIXER_MIC) { + val = maestro_ac97_get(card, mh->offset) & ~0x801f; + val |= (((100 - left) * mh->scale) / 100); + /* the low bit is optional in the tone sliders and masking + it lets is avoid the 0xf 'bypass'.. */ + } else if (mixer == SOUND_MIXER_BASS) { + val = maestro_ac97_get(card , mh->offset) & ~0x0f00; + val |= ((((100 - left) * mh->scale) / 100) << 8) & 0x0e00; + } else if (mixer == SOUND_MIXER_TREBLE) { + val = maestro_ac97_get(card , mh->offset) & ~0x000f; + val |= (((100 - left) * mh->scale) / 100) & 0x000e; + } + + maestro_ac97_set(card , mh->offset, val); + + M_printk(" -> %x\n",val); +} + +/* the following tables allow us to go from + OSS <-> ac97 quickly. */ + +enum ac97_recsettings { + AC97_REC_MIC=0, + AC97_REC_CD, + AC97_REC_VIDEO, + AC97_REC_AUX, + AC97_REC_LINE, + AC97_REC_STEREO, /* combination of all enabled outputs.. */ + AC97_REC_MONO, /*.. or the mono equivalent */ + AC97_REC_PHONE +}; + +static unsigned int ac97_oss_mask[] = { + [AC97_REC_MIC] = SOUND_MASK_MIC, + [AC97_REC_CD] = SOUND_MASK_CD, + [AC97_REC_VIDEO] = SOUND_MASK_VIDEO, + [AC97_REC_AUX] = SOUND_MASK_LINE1, + [AC97_REC_LINE] = SOUND_MASK_LINE, + [AC97_REC_PHONE] = SOUND_MASK_PHONEIN +}; + +/* indexed by bit position */ +static unsigned int ac97_oss_rm[] = { + [SOUND_MIXER_MIC] = AC97_REC_MIC, + [SOUND_MIXER_CD] = AC97_REC_CD, + [SOUND_MIXER_VIDEO] = AC97_REC_VIDEO, + [SOUND_MIXER_LINE1] = AC97_REC_AUX, + [SOUND_MIXER_LINE] = AC97_REC_LINE, + [SOUND_MIXER_PHONEIN] = AC97_REC_PHONE +}; + +/* read or write the recmask + the ac97 can really have left and right recording + inputs independently set, but OSS doesn't seem to + want us to express that to the user. + the caller guarantees that we have a supported bit set, + and they must be holding the card's spinlock */ +static int +ac97_recmask_io(struct ess_card *card, int read, int mask) +{ + unsigned int val = ac97_oss_mask[ maestro_ac97_get(card, 0x1a) & 0x7 ]; + + if (read) return val; + + /* oss can have many inputs, maestro can't. try + to pick the 'new' one */ + + if (mask != val) mask &= ~val; + + val = ffs(mask) - 1; + val = ac97_oss_rm[val]; + val |= val << 8; /* set both channels */ + + M_printk("maestro: setting ac97 recmask to 0x%x\n",val); + + maestro_ac97_set(card,0x1a,val); + + return 0; +}; + +/* + * The Maestro can be wired to a standard AC97 compliant codec + * (see www.intel.com for the pdf's on this), or to a PT101 codec + * which appears to be the ES1918 (data sheet on the esstech.com.tw site) + * + * The PT101 setup is untested. + */ + +static u16 __init maestro_ac97_init(struct ess_card *card) +{ + u16 vend1, vend2, caps; + + card->mix.supported_mixers = AC97_SUPPORTED_MASK; + card->mix.stereo_mixers = AC97_STEREO_MASK; + card->mix.record_sources = AC97_RECORD_MASK; +/* card->mix.read_mixer = ac97_read_mixer;*/ + card->mix.write_mixer = ac97_write_mixer; + card->mix.recmask_io = ac97_recmask_io; + + vend1 = maestro_ac97_get(card, 0x7c); + vend2 = maestro_ac97_get(card, 0x7e); + + caps = maestro_ac97_get(card, 0x00); + + printk(KERN_INFO "maestro: AC97 Codec detected: v: 0x%2x%2x caps: 0x%x pwr: 0x%x\n", + vend1,vend2,caps,maestro_ac97_get(card,0x26) & 0xf); + + if (! (caps & 0x4) ) { + /* no bass/treble nobs */ + card->mix.supported_mixers &= ~(SOUND_MASK_BASS|SOUND_MASK_TREBLE); + } + + /* XXX endianness, dork head. */ + /* vendor specifc bits.. */ + switch ((long)(vend1 << 16) | vend2) { + case 0x545200ff: /* TriTech */ + /* no idea what this does */ + maestro_ac97_set(card,0x2a,0x0001); + maestro_ac97_set(card,0x2c,0x0000); + maestro_ac97_set(card,0x2c,0xffff); + break; +#if 0 /* i thought the problems I was seeing were with + the 1921, but apparently they were with the pci board + it was on, so this code is commented out. + lets see if this holds true. */ + case 0x83847609: /* ESS 1921 */ + /* writing to 0xe (mic) or 0x1a (recmask) seems + to hang this codec */ + card->mix.supported_mixers &= ~(SOUND_MASK_MIC); + card->mix.record_sources = 0; + card->mix.recmask_io = NULL; +#if 0 /* don't ask. I have yet to see what these actually do. */ + maestro_ac97_set(card,0x76,0xABBA); /* o/~ Take a chance on me o/~ */ + udelay(20); + maestro_ac97_set(card,0x78,0x3002); + udelay(20); + maestro_ac97_set(card,0x78,0x3802); + udelay(20); +#endif + break; +#endif + default: break; + } + + maestro_ac97_set(card, 0x1E, 0x0404); + /* null misc stuff */ + maestro_ac97_set(card, 0x20, 0x0000); + + return 0; +} + +#if 0 /* there has been 1 person on the planet with a pt101 that we + know of. If they care, they can put this back in :) */ +static u16 maestro_pt101_init(struct ess_card *card,int iobase) +{ + printk(KERN_INFO "maestro: PT101 Codec detected, initializing but _not_ installing mixer device.\n"); + /* who knows.. */ + maestro_ac97_set(iobase, 0x2A, 0x0001); + maestro_ac97_set(iobase, 0x2C, 0x0000); + maestro_ac97_set(iobase, 0x2C, 0xFFFF); + maestro_ac97_set(iobase, 0x10, 0x9F1F); + maestro_ac97_set(iobase, 0x12, 0x0808); + maestro_ac97_set(iobase, 0x14, 0x9F1F); + maestro_ac97_set(iobase, 0x16, 0x9F1F); + maestro_ac97_set(iobase, 0x18, 0x0404); + maestro_ac97_set(iobase, 0x1A, 0x0000); + maestro_ac97_set(iobase, 0x1C, 0x0000); + maestro_ac97_set(iobase, 0x02, 0x0404); + maestro_ac97_set(iobase, 0x04, 0x0808); + maestro_ac97_set(iobase, 0x0C, 0x801F); + maestro_ac97_set(iobase, 0x0E, 0x801F); + return 0; +} +#endif + +/* this is very magic, and very slow.. */ +static void +maestro_ac97_reset(int ioaddr, struct pci_dev *pcidev) +{ + u16 save_68; + u16 w; + u32 vend; + + outw( inw(ioaddr + 0x38) & 0xfffc, ioaddr + 0x38); + outw( inw(ioaddr + 0x3a) & 0xfffc, ioaddr + 0x3a); + outw( inw(ioaddr + 0x3c) & 0xfffc, ioaddr + 0x3c); + + /* reset the first codec */ + outw(0x0000, ioaddr+0x36); + save_68 = inw(ioaddr+0x68); + pci_read_config_word(pcidev, 0x58, &w); /* something magical with gpio and bus arb. */ + pci_read_config_dword(pcidev, PCI_SUBSYSTEM_VENDOR_ID, &vend); + if( w & 0x1) + save_68 |= 0x10; + outw(0xfffe, ioaddr + 0x64); /* tickly gpio 0.. */ + outw(0x0001, ioaddr + 0x68); + outw(0x0000, ioaddr + 0x60); + udelay(20); + outw(0x0001, ioaddr + 0x60); + mdelay(20); + + outw(save_68 | 0x1, ioaddr + 0x68); /* now restore .. */ + outw( (inw(ioaddr + 0x38) & 0xfffc)|0x1, ioaddr + 0x38); + outw( (inw(ioaddr + 0x3a) & 0xfffc)|0x1, ioaddr + 0x3a); + outw( (inw(ioaddr + 0x3c) & 0xfffc)|0x1, ioaddr + 0x3c); + + /* now the second codec */ + outw(0x0000, ioaddr+0x36); + outw(0xfff7, ioaddr + 0x64); + save_68 = inw(ioaddr+0x68); + outw(0x0009, ioaddr + 0x68); + outw(0x0001, ioaddr + 0x60); + udelay(20); + outw(0x0009, ioaddr + 0x60); + mdelay(500); /* .. ouch.. */ + outw( inw(ioaddr + 0x38) & 0xfffc, ioaddr + 0x38); + outw( inw(ioaddr + 0x3a) & 0xfffc, ioaddr + 0x3a); + outw( inw(ioaddr + 0x3c) & 0xfffc, ioaddr + 0x3c); + +#if 0 /* the loop here needs to be much better if we want it.. */ + M_printk("trying software reset\n"); + /* try and do a software reset */ + outb(0x80|0x7c, ioaddr + 0x30); + for (w=0; ; w++) { + if ((inw(ioaddr+ 0x30) & 1) == 0) { + if(inb(ioaddr + 0x32) !=0) break; + + outb(0x80|0x7d, ioaddr + 0x30); + if (((inw(ioaddr+ 0x30) & 1) == 0) && (inb(ioaddr + 0x32) !=0)) break; + outb(0x80|0x7f, ioaddr + 0x30); + if (((inw(ioaddr+ 0x30) & 1) == 0) && (inb(ioaddr + 0x32) !=0)) break; + } + + if( w > 10000) { + outb( inb(ioaddr + 0x37) | 0x08, ioaddr + 0x37); /* do a software reset */ + mdelay(500); /* oh my.. */ + outb( inb(ioaddr + 0x37) & ~0x08, ioaddr + 0x37); + udelay(1); + outw( 0x80, ioaddr+0x30); + for(w = 0 ; w < 10000; w++) { + if((inw(ioaddr + 0x30) & 1) ==0) break; + } + } + } +#endif + if ( vend == NEC_VERSA_SUBID1 || vend == NEC_VERSA_SUBID2) { + /* turn on external amp? */ + outw(0xf9ff, ioaddr + 0x64); + outw(inw(ioaddr+0x68) | 0x600, ioaddr + 0x68); + outw(0x0209, ioaddr + 0x60); + } + + /* Turn on the 978 docking chip. + First frob the "master output enable" bit, + then set most of the playback volume control registers to max. */ + outb(inb(ioaddr+0xc0)|(1<<5), ioaddr+0xc0); + outb(0xff, ioaddr+0xc3); + outb(0xff, ioaddr+0xc4); + outb(0xff, ioaddr+0xc6); + outb(0xff, ioaddr+0xc8); + outb(0x3f, ioaddr+0xcf); + outb(0x3f, ioaddr+0xd0); +} +/* + * Indirect register access. Not all registers are readable so we + * need to keep register state ourselves + */ + +#define WRITEABLE_MAP 0xEFFFFF +#define READABLE_MAP 0x64003F + +/* + * The Maestro engineers were a little indirection happy. These indirected + * registers themselves include indirect registers at another layer + */ + +static void __maestro_write(struct ess_card *card, u16 reg, u16 data) +{ + long ioaddr = card->iobase; + + outw(reg, ioaddr+0x02); + outw(data, ioaddr+0x00); + if( reg >= NR_IDRS) printk("maestro: IDR %d out of bounds!\n",reg); + else card->maestro_map[reg]=data; + +} + +static void maestro_write(struct ess_state *s, u16 reg, u16 data) +{ + unsigned long flags; + + check_suspend(s->card); + spin_lock_irqsave(&s->card->lock,flags); + + __maestro_write(s->card,reg,data); + + spin_unlock_irqrestore(&s->card->lock,flags); +} + +static u16 __maestro_read(struct ess_card *card, u16 reg) +{ + long ioaddr = card->iobase; + + outw(reg, ioaddr+0x02); + return card->maestro_map[reg]=inw(ioaddr+0x00); +} + +static u16 maestro_read(struct ess_state *s, u16 reg) +{ + if(READABLE_MAP & (1<<reg)) + { + unsigned long flags; + check_suspend(s->card); + spin_lock_irqsave(&s->card->lock,flags); + + __maestro_read(s->card,reg); + + spin_unlock_irqrestore(&s->card->lock,flags); + } + return s->card->maestro_map[reg]; +} + +/* + * These routines handle accessing the second level indirections to the + * wave ram. + */ + +/* + * The register names are the ones ESS uses (see 104T31.ZIP) + */ + +#define IDR0_DATA_PORT 0x00 +#define IDR1_CRAM_POINTER 0x01 +#define IDR2_CRAM_DATA 0x02 +#define IDR3_WAVE_DATA 0x03 +#define IDR4_WAVE_PTR_LOW 0x04 +#define IDR5_WAVE_PTR_HI 0x05 +#define IDR6_TIMER_CTRL 0x06 +#define IDR7_WAVE_ROMRAM 0x07 + +static void apu_index_set(struct ess_card *card, u16 index) +{ + int i; + __maestro_write(card, IDR1_CRAM_POINTER, index); + for(i=0;i<1000;i++) + if(__maestro_read(card, IDR1_CRAM_POINTER)==index) + return; + printk(KERN_WARNING "maestro: APU register select failed.\n"); +} + +static void apu_data_set(struct ess_card *card, u16 data) +{ + int i; + for(i=0;i<1000;i++) + { + if(__maestro_read(card, IDR0_DATA_PORT)==data) + return; + __maestro_write(card, IDR0_DATA_PORT, data); + } +} + +/* + * This is the public interface for APU manipulation. It handles the + * interlock to avoid two APU writes in parallel etc. Don't diddle + * directly with the stuff above. + */ + +static void apu_set_register(struct ess_state *s, u16 channel, u8 reg, u16 data) +{ + unsigned long flags; + + check_suspend(s->card); + + if(channel&ESS_CHAN_HARD) + channel&=~ESS_CHAN_HARD; + else + { + if(channel>5) + printk("BAD CHANNEL %d.\n",channel); + else + channel = s->apu[channel]; + /* store based on real hardware apu/reg */ + s->card->apu_map[channel][reg]=data; + } + reg|=(channel<<4); + + /* hooray for double indirection!! */ + spin_lock_irqsave(&s->card->lock,flags); + + apu_index_set(s->card, reg); + apu_data_set(s->card, data); + + spin_unlock_irqrestore(&s->card->lock,flags); +} + +static u16 apu_get_register(struct ess_state *s, u16 channel, u8 reg) +{ + unsigned long flags; + u16 v; + + check_suspend(s->card); + + if(channel&ESS_CHAN_HARD) + channel&=~ESS_CHAN_HARD; + else + channel = s->apu[channel]; + + reg|=(channel<<4); + + spin_lock_irqsave(&s->card->lock,flags); + + apu_index_set(s->card, reg); + v=__maestro_read(s->card, IDR0_DATA_PORT); + + spin_unlock_irqrestore(&s->card->lock,flags); + return v; +} + + +/* + * The wavecache buffers between the APUs and + * pci bus mastering + */ + +static void wave_set_register(struct ess_state *s, u16 reg, u16 value) +{ + long ioaddr = s->card->iobase; + unsigned long flags; + check_suspend(s->card); + + spin_lock_irqsave(&s->card->lock,flags); + + outw(reg, ioaddr+0x10); + outw(value, ioaddr+0x12); + + spin_unlock_irqrestore(&s->card->lock,flags); +} + +static u16 wave_get_register(struct ess_state *s, u16 reg) +{ + long ioaddr = s->card->iobase; + unsigned long flags; + u16 value; + check_suspend(s->card); + + spin_lock_irqsave(&s->card->lock,flags); + outw(reg, ioaddr+0x10); + value=inw(ioaddr+0x12); + spin_unlock_irqrestore(&s->card->lock,flags); + + return value; +} + +static void sound_reset(int ioaddr) +{ + outw(0x2000, 0x18+ioaddr); + udelay(1); + outw(0x0000, 0x18+ioaddr); + udelay(1); +} + +/* sets the play formats of these apus, should be passed the already shifted format */ +static void set_apu_fmt(struct ess_state *s, int apu, int mode) +{ + int apu_fmt = 0x10; + + if(!(mode&ESS_FMT_16BIT)) apu_fmt+=0x20; + if((mode&ESS_FMT_STEREO)) apu_fmt+=0x10; + s->apu_mode[apu] = apu_fmt; + s->apu_mode[apu+1] = apu_fmt; +} + +/* this only fixes the output apu mode to be later set by start_dac and + company. output apu modes are set in ess_rec_setup */ +static void set_fmt(struct ess_state *s, unsigned char mask, unsigned char data) +{ + s->fmt = (s->fmt & mask) | data; + set_apu_fmt(s, 0, (s->fmt >> ESS_DAC_SHIFT) & ESS_FMT_MASK); +} + +/* this is off by a little bit.. */ +static u32 compute_rate(struct ess_state *s, u32 freq) +{ + u32 clock = clock_freq[s->card->card_type]; + + freq = (freq * clocking)/48000; + + if (freq == 48000) + return 0x10000; + + return ((freq / clock) <<16 )+ + (((freq % clock) << 16) / clock); +} + +static void set_dac_rate(struct ess_state *s, unsigned int rate) +{ + u32 freq; + int fmt = (s->fmt >> ESS_DAC_SHIFT) & ESS_FMT_MASK; + + if (rate > 48000) + rate = 48000; + if (rate < 4000) + rate = 4000; + + s->ratedac = rate; + + if(! (fmt & ESS_FMT_16BIT) && !(fmt & ESS_FMT_STEREO)) + rate >>= 1; + +/* M_printk("computing dac rate %d with mode %d\n",rate,s->fmt);*/ + + freq = compute_rate(s, rate); + + /* Load the frequency, turn on 6dB */ + apu_set_register(s, 0, 2,(apu_get_register(s, 0, 2)&0x00FF)| + ( ((freq&0xFF)<<8)|0x10 )); + apu_set_register(s, 0, 3, freq>>8); + apu_set_register(s, 1, 2,(apu_get_register(s, 1, 2)&0x00FF)| + ( ((freq&0xFF)<<8)|0x10 )); + apu_set_register(s, 1, 3, freq>>8); +} + +static void set_adc_rate(struct ess_state *s, unsigned rate) +{ + u32 freq; + + /* Sample Rate conversion APUs don't like 0x10000 for their rate */ + if (rate > 47999) + rate = 47999; + if (rate < 4000) + rate = 4000; + + s->rateadc = rate; + + freq = compute_rate(s, rate); + + /* Load the frequency, turn on 6dB */ + apu_set_register(s, 2, 2,(apu_get_register(s, 2, 2)&0x00FF)| + ( ((freq&0xFF)<<8)|0x10 )); + apu_set_register(s, 2, 3, freq>>8); + apu_set_register(s, 3, 2,(apu_get_register(s, 3, 2)&0x00FF)| + ( ((freq&0xFF)<<8)|0x10 )); + apu_set_register(s, 3, 3, freq>>8); + + /* fix mixer rate at 48khz. and its _must_ be 0x10000. */ + freq = 0x10000; + + apu_set_register(s, 4, 2,(apu_get_register(s, 4, 2)&0x00FF)| + ( ((freq&0xFF)<<8)|0x10 )); + apu_set_register(s, 4, 3, freq>>8); + apu_set_register(s, 5, 2,(apu_get_register(s, 5, 2)&0x00FF)| + ( ((freq&0xFF)<<8)|0x10 )); + apu_set_register(s, 5, 3, freq>>8); +} + +/* Stop our host of recording apus */ +static inline void stop_adc(struct ess_state *s) +{ + /* XXX lets hope we don't have to lock around this */ + if (! (s->enable & ADC_RUNNING)) return; + + s->enable &= ~ADC_RUNNING; + apu_set_register(s, 2, 0, apu_get_register(s, 2, 0)&0xFF0F); + apu_set_register(s, 3, 0, apu_get_register(s, 3, 0)&0xFF0F); + apu_set_register(s, 4, 0, apu_get_register(s, 2, 0)&0xFF0F); + apu_set_register(s, 5, 0, apu_get_register(s, 3, 0)&0xFF0F); +} + +/* stop output apus */ +static void stop_dac(struct ess_state *s) +{ + /* XXX have to lock around this? */ + if (! (s->enable & DAC_RUNNING)) return; + + s->enable &= ~DAC_RUNNING; + apu_set_register(s, 0, 0, apu_get_register(s, 0, 0)&0xFF0F); + apu_set_register(s, 1, 0, apu_get_register(s, 1, 0)&0xFF0F); +} + +static void start_dac(struct ess_state *s) +{ + /* XXX locks? */ + if ( (s->dma_dac.mapped || s->dma_dac.count > 0) && + s->dma_dac.ready && + (! (s->enable & DAC_RUNNING)) ) { + + s->enable |= DAC_RUNNING; + + apu_set_register(s, 0, 0, + (apu_get_register(s, 0, 0)&0xFF0F)|s->apu_mode[0]); + + if((s->fmt >> ESS_DAC_SHIFT) & ESS_FMT_STEREO) + apu_set_register(s, 1, 0, + (apu_get_register(s, 1, 0)&0xFF0F)|s->apu_mode[1]); + } +} + +static void start_adc(struct ess_state *s) +{ + /* XXX locks? */ + if ((s->dma_adc.mapped || s->dma_adc.count < (signed)(s->dma_adc.dmasize - 2*s->dma_adc.fragsize)) + && s->dma_adc.ready && (! (s->enable & ADC_RUNNING)) ) { + + s->enable |= ADC_RUNNING; + apu_set_register(s, 2, 0, + (apu_get_register(s, 2, 0)&0xFF0F)|s->apu_mode[2]); + apu_set_register(s, 4, 0, + (apu_get_register(s, 4, 0)&0xFF0F)|s->apu_mode[4]); + + if( s->fmt & (ESS_FMT_STEREO << ESS_ADC_SHIFT)) { + apu_set_register(s, 3, 0, + (apu_get_register(s, 3, 0)&0xFF0F)|s->apu_mode[3]); + apu_set_register(s, 5, 0, + (apu_get_register(s, 5, 0)&0xFF0F)|s->apu_mode[5]); + } + + } +} + + +/* + * Native play back driver + */ + +/* the mode passed should be already shifted and masked */ +static void +ess_play_setup(struct ess_state *ess, int mode, u32 rate, void *buffer, int size) +{ + u32 pa; + u32 tmpval; + int high_apu = 0; + int channel; + + M_printk("mode=%d rate=%d buf=%p len=%d.\n", + mode, rate, buffer, size); + + /* all maestro sizes are in 16bit words */ + size >>=1; + + if(mode&ESS_FMT_STEREO) { + high_apu++; + /* only 16/stereo gets size divided */ + if(mode&ESS_FMT_16BIT) + size>>=1; + } + + for(channel=0; channel <= high_apu; channel++) + { + pa = virt_to_bus(buffer); + + /* set the wavecache control reg */ + tmpval = (pa - 0x10) & 0xFFF8; + if(!(mode & ESS_FMT_16BIT)) tmpval |= 4; + if(mode & ESS_FMT_STEREO) tmpval |= 2; + ess->apu_base[channel]=tmpval; + wave_set_register(ess, ess->apu[channel]<<3, tmpval); + + pa -= virt_to_bus(ess->card->dmapages); + pa>>=1; /* words */ + + /* base offset of dma calcs when reading the pointer + on the left one */ + if(!channel) ess->dma_dac.base = pa&0xFFFF; + + pa|=0x00400000; /* System RAM */ + + /* XXX the 16bit here might not be needed.. */ + if((mode & ESS_FMT_STEREO) && (mode & ESS_FMT_16BIT)) { + if(channel) + pa|=0x00800000; /* Stereo */ + pa>>=1; + } + +/* XXX think about endianess when writing these registers */ + M_printk("maestro: ess_play_setup: APU[%d] pa = 0x%x\n", ess->apu[channel], pa); + /* start of sample */ + apu_set_register(ess, channel, 4, ((pa>>16)&0xFF)<<8); + apu_set_register(ess, channel, 5, pa&0xFFFF); + /* sample end */ + apu_set_register(ess, channel, 6, (pa+size)&0xFFFF); + /* setting loop len == sample len */ + apu_set_register(ess, channel, 7, size); + + /* clear effects/env.. */ + apu_set_register(ess, channel, 8, 0x0000); + /* set amp now to 0xd0 (?), low byte is 'amplitude dest'? */ + apu_set_register(ess, channel, 9, 0xD000); + + /* clear routing stuff */ + apu_set_register(ess, channel, 11, 0x0000); + /* dma on, no envelopes, filter to all 1s) */ + apu_set_register(ess, channel, 0, 0x400F); + + if(mode&ESS_FMT_16BIT) + ess->apu_mode[channel]=0x10; + else + ess->apu_mode[channel]=0x30; + + if(mode&ESS_FMT_STEREO) { + /* set panning: left or right */ + apu_set_register(ess, channel, 10, 0x8F00 | (channel ? 0 : 0x10)); + ess->apu_mode[channel] += 0x10; + } else + apu_set_register(ess, channel, 10, 0x8F08); + } + + /* clear WP interrupts */ + outw(1, ess->card->iobase+0x04); + /* enable WP ints */ + outw(inw(ess->card->iobase+0x18)|4, ess->card->iobase+0x18); + + /* go team! */ + set_dac_rate(ess,rate); + start_dac(ess); +} + +/* + * Native record driver + */ + +/* again, passed mode is alrady shifted/masked */ +static void +ess_rec_setup(struct ess_state *ess, int mode, u32 rate, void *buffer, int size) +{ + int apu_step = 2; + int channel; + + M_printk("maestro: ess_rec_setup: mode=%d rate=%d buf=0x%p len=%d.\n", + mode, rate, buffer, size); + + /* all maestro sizes are in 16bit words */ + size >>=1; + + /* we're given the full size of the buffer, but + in stereo each channel will only use its half */ + if(mode&ESS_FMT_STEREO) { + size >>=1; + apu_step = 1; + } + + /* APU assignments: 2 = mono/left SRC + 3 = right SRC + 4 = mono/left Input Mixer + 5 = right Input Mixer */ + for(channel=2;channel<6;channel+=apu_step) + { + int i; + int bsize, route; + u32 pa; + u32 tmpval; + + /* data seems to flow from the codec, through an apu into + the 'mixbuf' bit of page, then through the SRC apu + and out to the real 'buffer'. ok. sure. */ + + if(channel & 0x04) { + /* ok, we're an input mixer going from adc + through the mixbuf to the other apus */ + + if(!(channel & 0x01)) { + pa = virt_to_bus(ess->mixbuf); + } else { + pa = virt_to_bus(ess->mixbuf + (PAGE_SIZE >> 4)); + } + + /* we source from a 'magic' apu */ + bsize = PAGE_SIZE >> 5; /* half of this channels alloc, in words */ + route = 0x14 + (channel - 4); /* parallel in crap, see maestro reg 0xC [8-11] */ + ess->apu_mode[channel] = 0x90; /* Input Mixer */ + + } else { + /* we're a rate converter taking + input from the input apus and outputing it to + system memory */ + if(!(channel & 0x01)) { + pa = virt_to_bus(buffer); + } else { + /* right channel records its split half. + *2 accommodates for rampant shifting earlier */ + pa = virt_to_bus(buffer + size*2); + } + + ess->apu_mode[channel] = 0xB0; /* Sample Rate Converter */ + + bsize = size; + /* get input from inputing apu */ + route = channel + 2; + } + + M_printk("maestro: ess_rec_setup: getting pa 0x%x from %d\n",pa,channel); + + /* set the wavecache control reg */ + tmpval = (pa - 0x10) & 0xFFF8; + ess->apu_base[channel]=tmpval; + wave_set_register(ess, ess->apu[channel]<<3, tmpval); + + pa -= virt_to_bus(ess->card->dmapages); + pa>>=1; /* words */ + + /* base offset of dma calcs when reading the pointer + on this left one */ + if(channel==2) ess->dma_adc.base = pa&0xFFFF; + + pa|=0x00400000; /* bit 22 -> System RAM */ + + M_printk("maestro: ess_rec_setup: APU[%d] pa = 0x%x size = 0x%x route = 0x%x\n", + ess->apu[channel], pa, bsize, route); + + /* Begin loading the APU */ + for(i=0;i<15;i++) /* clear all PBRs */ + apu_set_register(ess, channel, i, 0x0000); + + apu_set_register(ess, channel, 0, 0x400F); + + /* need to enable subgroups.. and we should probably + have different groups for different /dev/dsps.. */ + apu_set_register(ess, channel, 2, 0x8); + + /* Load the buffer into the wave engine */ + apu_set_register(ess, channel, 4, ((pa>>16)&0xFF)<<8); + /* XXX reg is little endian.. */ + apu_set_register(ess, channel, 5, pa&0xFFFF); + apu_set_register(ess, channel, 6, (pa+bsize)&0xFFFF); + apu_set_register(ess, channel, 7, bsize); + + /* clear effects/env.. */ + apu_set_register(ess, channel, 8, 0x00F0); + + /* amplitude now? sure. why not. */ + apu_set_register(ess, channel, 9, 0x0000); + + /* set filter tune, radius, polar pan */ + apu_set_register(ess, channel, 10, 0x8F08); + + /* route input */ + apu_set_register(ess, channel, 11, route); + } + + /* clear WP interrupts */ + outw(1, ess->card->iobase+0x04); + /* enable WP ints */ + outw(inw(ess->card->iobase+0x18)|4, ess->card->iobase+0x18); + + /* let 'er rip */ + set_adc_rate(ess,rate); + start_adc(ess); +} +/* --------------------------------------------------------------------- */ + +static void set_dmaa(struct ess_state *s, unsigned int addr, unsigned int count) +{ + M_printk("set_dmaa??\n"); +} + +static void set_dmac(struct ess_state *s, unsigned int addr, unsigned int count) +{ + M_printk("set_dmac??\n"); +} + +/* Playback pointer */ +static inline unsigned get_dmaa(struct ess_state *s) +{ + int offset; + + offset = apu_get_register(s,0,5); + +/* M_printk("dmaa: offset: %d, base: %d\n",offset,s->dma_dac.base); */ + + offset-=s->dma_dac.base; + + return (offset&0xFFFE)<<1; /* hardware is in words */ +} + +/* Record pointer */ +static inline unsigned get_dmac(struct ess_state *s) +{ + int offset; + + offset = apu_get_register(s,2,5); + +/* M_printk("dmac: offset: %d, base: %d\n",offset,s->dma_adc.base); */ + + /* The offset is an address not a position relative to base */ + offset-=s->dma_adc.base; + + return (offset&0xFFFE)<<1; /* hardware is in words */ +} + +/* + * Meet Bob, the timer... + */ + +static irqreturn_t ess_interrupt(int irq, void *dev_id, struct pt_regs *regs); + +static void stop_bob(struct ess_state *s) +{ + /* Mask IDR 11,17 */ + maestro_write(s, 0x11, maestro_read(s, 0x11)&~1); + maestro_write(s, 0x17, maestro_read(s, 0x17)&~1); +} + +/* eventually we could be clever and limit bob ints + to the frequency at which our smallest duration + chunks may expire */ +#define ESS_SYSCLK 50000000 +static void start_bob(struct ess_state *s) +{ + int prescale; + int divide; + + /* XXX make freq selector much smarter, see calc_bob_rate */ + int freq = 200; + + /* compute ideal interrupt frequency for buffer size & play rate */ + /* first, find best prescaler value to match freq */ + for(prescale=5;prescale<12;prescale++) + if(freq > (ESS_SYSCLK>>(prescale+9))) + break; + + /* next, back off prescaler whilst getting divider into optimum range */ + divide=1; + while((prescale > 5) && (divide<32)) + { + prescale--; + divide <<=1; + } + divide>>=1; + + /* now fine-tune the divider for best match */ + for(;divide<31;divide++) + if(freq >= ((ESS_SYSCLK>>(prescale+9))/(divide+1))) + break; + + /* divide = 0 is illegal, but don't let prescale = 4! */ + if(divide == 0) + { + divide++; + if(prescale>5) + prescale--; + } + + maestro_write(s, 6, 0x9000 | (prescale<<5) | divide); /* set reg */ + + /* Now set IDR 11/17 */ + maestro_write(s, 0x11, maestro_read(s, 0x11)|1); + maestro_write(s, 0x17, maestro_read(s, 0x17)|1); +} +/* --------------------------------------------------------------------- */ + +/* this quickly calculates the frequency needed for bob + and sets it if its different than what bob is + currently running at. its called often so + needs to be fairly quick. */ +#define BOB_MIN 50 +#define BOB_MAX 400 +static void calc_bob_rate(struct ess_state *s) { +#if 0 /* this thing tries to set the frequency of bob such that + there are 2 interrupts / buffer walked by the dac/adc. That + is probably very wrong for people who actually care about + mid buffer positioning. it should be calculated as bytes/interrupt + and that needs to be decided :) so for now just use the static 150 + in start_bob.*/ + + unsigned int dac_rate=2,adc_rate=1,newrate; + static int israte=-1; + + if (s->dma_dac.fragsize == 0) dac_rate = BOB_MIN; + else { + dac_rate = (2 * s->ratedac * sample_size[(s->fmt >> ESS_DAC_SHIFT) & ESS_FMT_MASK]) / + (s->dma_dac.fragsize) ; + } + + if (s->dma_adc.fragsize == 0) adc_rate = BOB_MIN; + else { + adc_rate = (2 * s->rateadc * sample_size[(s->fmt >> ESS_DAC_SHIFT) & ESS_FMT_MASK]) / + (s->dma_adc.fragsize) ; + } + + if(dac_rate > adc_rate) newrate = adc_rate; + else newrate=dac_rate; + + if(newrate > BOB_MAX) newrate = BOB_MAX; + else { + if(newrate < BOB_MIN) + newrate = BOB_MIN; + } + + if( israte != newrate) { + printk("dac: %d adc: %d rate: %d\n",dac_rate,adc_rate,israte); + israte=newrate; + } +#endif + +} + +static int +prog_dmabuf(struct ess_state *s, unsigned rec) +{ + struct dmabuf *db = rec ? &s->dma_adc : &s->dma_dac; + unsigned rate = rec ? s->rateadc : s->ratedac; + unsigned bytepersec; + unsigned bufs; + unsigned char fmt; + unsigned long flags; + + spin_lock_irqsave(&s->lock, flags); + fmt = s->fmt; + if (rec) { + stop_adc(s); + fmt >>= ESS_ADC_SHIFT; + } else { + stop_dac(s); + fmt >>= ESS_DAC_SHIFT; + } + spin_unlock_irqrestore(&s->lock, flags); + fmt &= ESS_FMT_MASK; + + db->hwptr = db->swptr = db->total_bytes = db->count = db->error = db->endcleared = 0; + + /* this algorithm is a little nuts.. where did /1000 come from? */ + 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; + + M_printk("maestro: setup oss: numfrag: %d fragsize: %d dmasize: %d\n",db->numfrag,db->fragsize,db->dmasize); + + memset(db->rawbuf, (fmt & ESS_FMT_16BIT) ? 0 : 0x80, db->dmasize); + + spin_lock_irqsave(&s->lock, flags); + if (rec) + ess_rec_setup(s, fmt, s->rateadc, db->rawbuf, db->dmasize); + else + ess_play_setup(s, fmt, s->ratedac, db->rawbuf, db->dmasize); + + spin_unlock_irqrestore(&s->lock, flags); + db->ready = 1; + + return 0; +} + +static __inline__ void +clear_advance(struct ess_state *s) +{ + unsigned char c = ((s->fmt >> ESS_DAC_SHIFT) & ESS_FMT_16BIT) ? 0 : 0x80; + + unsigned char *buf = s->dma_dac.rawbuf; + unsigned bsize = s->dma_dac.dmasize; + unsigned bptr = s->dma_dac.swptr; + unsigned len = s->dma_dac.fragsize; + + if (bptr + len > bsize) { + unsigned x = bsize - bptr; + memset(buf + bptr, c, x); + /* account for wrapping? */ + bptr = 0; + len -= x; + } + memset(buf + bptr, c, len); +} + +/* call with spinlock held! */ +static void +ess_update_ptr(struct ess_state *s) +{ + unsigned hwptr; + int diff; + + /* update ADC pointer */ + if (s->dma_adc.ready) { + /* oh boy should this all be re-written. everything in the current code paths think + that the various counters/pointers are expressed in bytes to the user but we have + two apus doing stereo stuff so we fix it up here.. it propagates to all the various + counters from here. */ + if ( s->fmt & (ESS_FMT_STEREO << ESS_ADC_SHIFT)) { + hwptr = (get_dmac(s)*2) % s->dma_adc.dmasize; + } else { + hwptr = get_dmac(s) % s->dma_adc.dmasize; + } + diff = (s->dma_adc.dmasize + hwptr - s->dma_adc.hwptr) % s->dma_adc.dmasize; + s->dma_adc.hwptr = hwptr; + s->dma_adc.total_bytes += diff; + s->dma_adc.count += diff; + if (s->dma_adc.count >= (signed)s->dma_adc.fragsize) + wake_up(&s->dma_adc.wait); + if (!s->dma_adc.mapped) { + if (s->dma_adc.count > (signed)(s->dma_adc.dmasize - ((3 * s->dma_adc.fragsize) >> 1))) { + /* FILL ME + wrindir(s, SV_CIENABLE, s->enable); */ + stop_adc(s); + /* brute force everyone back in sync, sigh */ + s->dma_adc.count = 0; + s->dma_adc.swptr = 0; + s->dma_adc.hwptr = 0; + s->dma_adc.error++; + } + } + } + /* update DAC pointer */ + if (s->dma_dac.ready) { + hwptr = get_dmaa(s) % s->dma_dac.dmasize; + /* the apu only reports the length it has seen, not the + length of the memory that has been used (the WP + knows that) */ + if ( ((s->fmt >> ESS_DAC_SHIFT) & ESS_FMT_MASK) == (ESS_FMT_STEREO|ESS_FMT_16BIT)) + hwptr<<=1; + + diff = (s->dma_dac.dmasize + hwptr - s->dma_dac.hwptr) % s->dma_dac.dmasize; +/* M_printk("updating dac: hwptr: %d diff: %d\n",hwptr,diff);*/ + s->dma_dac.hwptr = hwptr; + s->dma_dac.total_bytes += diff; + if (s->dma_dac.mapped) { + s->dma_dac.count += diff; + if (s->dma_dac.count >= (signed)s->dma_dac.fragsize) { + wake_up(&s->dma_dac.wait); + } + } else { + s->dma_dac.count -= diff; +/* M_printk("maestro: ess_update_ptr: diff: %d, count: %d\n", diff, s->dma_dac.count); */ + if (s->dma_dac.count <= 0) { + M_printk("underflow! diff: %d count: %d hw: %d sw: %d\n", diff, s->dma_dac.count, + hwptr, s->dma_dac.swptr); + /* FILL ME + wrindir(s, SV_CIENABLE, s->enable); */ + /* XXX how on earth can calling this with the lock held work.. */ + stop_dac(s); + /* brute force everyone back in sync, sigh */ + s->dma_dac.count = 0; + s->dma_dac.swptr = hwptr; + s->dma_dac.error++; + } else if (s->dma_dac.count <= (signed)s->dma_dac.fragsize && !s->dma_dac.endcleared) { + clear_advance(s); + s->dma_dac.endcleared = 1; + } + if (s->dma_dac.count + (signed)s->dma_dac.fragsize <= (signed)s->dma_dac.dmasize) { + wake_up(&s->dma_dac.wait); +/* printk("waking up DAC count: %d sw: %d hw: %d\n",s->dma_dac.count, s->dma_dac.swptr, + hwptr);*/ + } + } + } +} + +static irqreturn_t +ess_interrupt(int irq, void *dev_id, struct pt_regs *regs) +{ + struct ess_state *s; + struct ess_card *c = (struct ess_card *)dev_id; + int i; + u32 event; + + if ( ! (event = inb(c->iobase+0x1A)) ) + return IRQ_NONE; + + outw(inw(c->iobase+4)&1, c->iobase+4); + +/* M_printk("maestro int: %x\n",event);*/ + if(event&(1<<6)) + { + int x; + enum {UP_EVT, DOWN_EVT, MUTE_EVT} vol_evt; + int volume; + + /* Figure out which volume control button was pushed, + based on differences from the default register + values. */ + x = inb(c->iobase+0x1c); + if (x&1) vol_evt = MUTE_EVT; + else if (((x>>1)&7) > 4) vol_evt = UP_EVT; + else vol_evt = DOWN_EVT; + + /* Reset the volume control registers. */ + outb(0x88, c->iobase+0x1c); + outb(0x88, c->iobase+0x1d); + outb(0x88, c->iobase+0x1e); + outb(0x88, c->iobase+0x1f); + + /* Deal with the button press in a hammer-handed + manner by adjusting the master mixer volume. */ + volume = c->mix.mixer_state[0] & 0xff; + if (vol_evt == UP_EVT) { + volume += 5; + if (volume > 100) + volume = 100; + } + else if (vol_evt == DOWN_EVT) { + volume -= 5; + if (volume < 0) + volume = 0; + } else { + /* vol_evt == MUTE_EVT */ + if (volume == 0) + volume = c->dock_mute_vol; + else { + c->dock_mute_vol = volume; + volume = 0; + } + } + set_mixer (c, 0, (volume << 8) | volume); + } + + /* Ack all the interrupts. */ + outb(0xFF, c->iobase+0x1A); + + /* + * Update the pointers for all APU's we are running. + */ + for(i=0;i<NR_DSPS;i++) + { + s=&c->channels[i]; + if(s->dev_audio == -1) + break; + spin_lock(&s->lock); + ess_update_ptr(s); + spin_unlock(&s->lock); + } + return IRQ_HANDLED; +} + + +/* --------------------------------------------------------------------- */ + +static const char invalid_magic[] = KERN_CRIT "maestro: invalid magic value in %s\n"; + +#define VALIDATE_MAGIC(FOO,MAG) \ +({ \ + if (!(FOO) || (FOO)->magic != MAG) { \ + printk(invalid_magic,__FUNCTION__); \ + return -ENXIO; \ + } \ +}) + +#define VALIDATE_STATE(a) VALIDATE_MAGIC(a,ESS_STATE_MAGIC) +#define VALIDATE_CARD(a) VALIDATE_MAGIC(a,ESS_CARD_MAGIC) + +static void set_mixer(struct ess_card *card,unsigned int mixer, unsigned int val ) +{ + unsigned int left,right; + /* cleanse input a little */ + right = ((val >> 8) & 0xff) ; + left = (val & 0xff) ; + + if(right > 100) right = 100; + if(left > 100) left = 100; + + card->mix.mixer_state[mixer]=(right << 8) | left; + card->mix.write_mixer(card,mixer,left,right); +} + +static void +mixer_push_state(struct ess_card *card) +{ + int i; + for(i = 0 ; i < SOUND_MIXER_NRDEVICES ; i++) { + if( ! supported_mixer(card,i)) continue; + + set_mixer(card,i,card->mix.mixer_state[i]); + } +} + +static int mixer_ioctl(struct ess_card *card, unsigned int cmd, unsigned long arg) +{ + int i, val=0; + unsigned long flags; + void __user *argp = (void __user *)arg; + int __user *p = argp; + + VALIDATE_CARD(card); + if (cmd == SOUND_MIXER_INFO) { + mixer_info info; + memset(&info, 0, sizeof(info)); + strlcpy(info.id, card_names[card->card_type], sizeof(info.id)); + strlcpy(info.name, card_names[card->card_type], sizeof(info.name)); + info.modify_counter = card->mix.modcnt; + if (copy_to_user(argp, &info, sizeof(info))) + return -EFAULT; + return 0; + } + if (cmd == SOUND_OLD_MIXER_INFO) { + _old_mixer_info info; + memset(&info, 0, sizeof(info)); + strlcpy(info.id, card_names[card->card_type], sizeof(info.id)); + strlcpy(info.name, card_names[card->card_type], sizeof(info.name)); + if (copy_to_user(argp, &info, sizeof(info))) + return -EFAULT; + return 0; + } + if (cmd == OSS_GETVERSION) + return put_user(SOUND_VERSION, p); + + if (_IOC_TYPE(cmd) != 'M' || _IOC_SIZE(cmd) != sizeof(int)) + return -EINVAL; + + if (_IOC_DIR(cmd) == _IOC_READ) { + switch (_IOC_NR(cmd)) { + case SOUND_MIXER_RECSRC: /* give them the current record source */ + + if(!card->mix.recmask_io) { + val = 0; + } else { + spin_lock_irqsave(&card->lock, flags); + val = card->mix.recmask_io(card,1,0); + spin_unlock_irqrestore(&card->lock, flags); + } + break; + + case SOUND_MIXER_DEVMASK: /* give them the supported mixers */ + val = card->mix.supported_mixers; + break; + + case SOUND_MIXER_RECMASK: /* Arg contains a bit for each supported recording source */ + val = card->mix.record_sources; + break; + + case SOUND_MIXER_STEREODEVS: /* Mixer channels supporting stereo */ + val = card->mix.stereo_mixers; + break; + + case SOUND_MIXER_CAPS: + val = SOUND_CAP_EXCL_INPUT; + break; + + default: /* read a specific mixer */ + i = _IOC_NR(cmd); + + if ( ! supported_mixer(card,i)) + return -EINVAL; + + /* do we ever want to touch the hardware? */ +/* spin_lock_irqsave(&card->lock, flags); + val = card->mix.read_mixer(card,i); + spin_unlock_irqrestore(&card->lock, flags);*/ + + val = card->mix.mixer_state[i]; +/* M_printk("returned 0x%x for mixer %d\n",val,i);*/ + + break; + } + return put_user(val, p); + } + + if (_IOC_DIR(cmd) != (_IOC_WRITE|_IOC_READ)) + return -EINVAL; + + card->mix.modcnt++; + + if (get_user(val, p)) + return -EFAULT; + + switch (_IOC_NR(cmd)) { + case SOUND_MIXER_RECSRC: /* Arg contains a bit for each recording source */ + + if (!card->mix.recmask_io) return -EINVAL; + if(!val) return 0; + if(! (val &= card->mix.record_sources)) return -EINVAL; + + spin_lock_irqsave(&card->lock, flags); + card->mix.recmask_io(card,0,val); + spin_unlock_irqrestore(&card->lock, flags); + return 0; + + default: + i = _IOC_NR(cmd); + + if ( ! supported_mixer(card,i)) + return -EINVAL; + + spin_lock_irqsave(&card->lock, flags); + set_mixer(card,i,val); + spin_unlock_irqrestore(&card->lock, flags); + + return 0; + } +} + +/* --------------------------------------------------------------------- */ +static int ess_open_mixdev(struct inode *inode, struct file *file) +{ + unsigned int minor = iminor(inode); + struct ess_card *card = NULL; + struct pci_dev *pdev = NULL; + struct pci_driver *drvr; + + while ((pdev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pdev)) != NULL) { + drvr = pci_dev_driver (pdev); + if (drvr == &maestro_pci_driver) { + card = (struct ess_card*)pci_get_drvdata (pdev); + if (!card) + continue; + if (card->dev_mixer == minor) + break; + } + } + if (!card) + return -ENODEV; + file->private_data = card; + return nonseekable_open(inode, file); +} + +static int ess_release_mixdev(struct inode *inode, struct file *file) +{ + struct ess_card *card = (struct ess_card *)file->private_data; + + VALIDATE_CARD(card); + + return 0; +} + +static int ess_ioctl_mixdev(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) +{ + struct ess_card *card = (struct ess_card *)file->private_data; + + VALIDATE_CARD(card); + + return mixer_ioctl(card, cmd, arg); +} + +static /*const*/ struct file_operations ess_mixer_fops = { + .owner = THIS_MODULE, + .llseek = no_llseek, + .ioctl = ess_ioctl_mixdev, + .open = ess_open_mixdev, + .release = ess_release_mixdev, +}; + +/* --------------------------------------------------------------------- */ + +static int drain_dac(struct ess_state *s, int nonblock) +{ + DECLARE_WAITQUEUE(wait,current); + unsigned long flags; + int count; + signed long tmo; + + if (s->dma_dac.mapped || !s->dma_dac.ready) + return 0; + current->state = TASK_INTERRUPTIBLE; + add_wait_queue(&s->dma_dac.wait, &wait); + for (;;) { + /* XXX uhm.. questionable locking*/ + spin_lock_irqsave(&s->lock, flags); + count = s->dma_dac.count; + spin_unlock_irqrestore(&s->lock, flags); + if (count <= 0) + break; + if (signal_pending(current)) + break; + if (nonblock) { + remove_wait_queue(&s->dma_dac.wait, &wait); + current->state = TASK_RUNNING; + return -EBUSY; + } + tmo = (count * HZ) / s->ratedac; + tmo >>= sample_shift[(s->fmt >> ESS_DAC_SHIFT) & ESS_FMT_MASK]; + /* XXX this is just broken. someone is waking us up alot, or schedule_timeout is broken. + or something. who cares. - zach */ + if (!schedule_timeout(tmo ? tmo : 1) && tmo) + M_printk(KERN_DEBUG "maestro: dma timed out?? %ld\n",jiffies); + } + remove_wait_queue(&s->dma_dac.wait, &wait); + current->state = TASK_RUNNING; + if (signal_pending(current)) + return -ERESTARTSYS; + return 0; +} + +/* --------------------------------------------------------------------- */ +/* Zach sez: "god this is gross.." */ +static int +comb_stereo(unsigned char *real_buffer,unsigned char *tmp_buffer, int offset, + int count, int bufsize) +{ + /* No such thing as stereo recording, so we + use dual input mixers. which means we have to + combine mono to stereo buffer. yuck. + + but we don't have to be able to work a byte at a time..*/ + + unsigned char *so,*left,*right; + int i; + + so = tmp_buffer; + left = real_buffer + offset; + right = real_buffer + bufsize/2 + offset; + +/* M_printk("comb_stereo writing %d to %p from %p and %p, offset: %d size: %d\n",count/2, tmp_buffer,left,right,offset,bufsize);*/ + + for(i=count/4; i ; i--) { + (*(so+2)) = *(right++); + (*(so+3)) = *(right++); + (*so) = *(left++); + (*(so+1)) = *(left++); + so+=4; + } + + return 0; +} + +/* in this loop, dma_adc.count signifies the amount of data thats waiting + to be copied to the user's buffer. it is filled by the interrupt + handler and drained by this loop. */ +static ssize_t +ess_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos) +{ + struct ess_state *s = (struct ess_state *)file->private_data; + ssize_t ret; + unsigned long flags; + unsigned swptr; + int cnt; + unsigned char *combbuf = NULL; + + VALIDATE_STATE(s); + if (s->dma_adc.mapped) + return -ENXIO; + if (!s->dma_adc.ready && (ret = prog_dmabuf(s, 1))) + return ret; + if (!access_ok(VERIFY_WRITE, buffer, count)) + return -EFAULT; + if(!(combbuf = kmalloc(count,GFP_KERNEL))) + return -ENOMEM; + ret = 0; + + calc_bob_rate(s); + + while (count > 0) { + spin_lock_irqsave(&s->lock, flags); + /* remember, all these things are expressed in bytes to be + sent to the user.. hence the evil / 2 down below */ + swptr = s->dma_adc.swptr; + cnt = s->dma_adc.dmasize-swptr; + if (s->dma_adc.count < cnt) + cnt = s->dma_adc.count; + spin_unlock_irqrestore(&s->lock, flags); + + if (cnt > count) + cnt = count; + + if ( cnt > 0 ) cnt &= ~3; + + if (cnt <= 0) { + start_adc(s); + if (file->f_flags & O_NONBLOCK) + { + ret = ret ? ret : -EAGAIN; + goto rec_return_free; + } + if (!interruptible_sleep_on_timeout(&s->dma_adc.wait, HZ)) { + if(! s->card->in_suspend) printk(KERN_DEBUG "maestro: read: chip lockup? dmasz %u fragsz %u count %i hwptr %u swptr %u\n", + s->dma_adc.dmasize, s->dma_adc.fragsize, s->dma_adc.count, + s->dma_adc.hwptr, s->dma_adc.swptr); + stop_adc(s); + spin_lock_irqsave(&s->lock, flags); + set_dmac(s, virt_to_bus(s->dma_adc.rawbuf), s->dma_adc.numfrag << s->dma_adc.fragshift); + /* program enhanced mode registers */ + /* FILL ME */ +/* wrindir(s, SV_CIDMACBASECOUNT1, (s->dma_adc.fragsamples-1) >> 8); + wrindir(s, SV_CIDMACBASECOUNT0, s->dma_adc.fragsamples-1); */ + s->dma_adc.count = s->dma_adc.hwptr = s->dma_adc.swptr = 0; + spin_unlock_irqrestore(&s->lock, flags); + } + if (signal_pending(current)) + { + ret = ret ? ret : -ERESTARTSYS; + goto rec_return_free; + } + continue; + } + + if(s->fmt & (ESS_FMT_STEREO << ESS_ADC_SHIFT)) { + /* swptr/2 so that we know the real offset in each apu's buffer */ + comb_stereo(s->dma_adc.rawbuf,combbuf,swptr/2,cnt,s->dma_adc.dmasize); + if (copy_to_user(buffer, combbuf, cnt)) { + ret = ret ? ret : -EFAULT; + goto rec_return_free; + } + } else { + if (copy_to_user(buffer, s->dma_adc.rawbuf + swptr, cnt)) { + ret = ret ? ret : -EFAULT; + goto rec_return_free; + } + } + + swptr = (swptr + cnt) % s->dma_adc.dmasize; + spin_lock_irqsave(&s->lock, flags); + s->dma_adc.swptr = swptr; + s->dma_adc.count -= cnt; + spin_unlock_irqrestore(&s->lock, flags); + count -= cnt; + buffer += cnt; + ret += cnt; + start_adc(s); + } + +rec_return_free: + if(combbuf) kfree(combbuf); + return ret; +} + +static ssize_t +ess_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos) +{ + struct ess_state *s = (struct ess_state *)file->private_data; + ssize_t ret; + unsigned long flags; + unsigned swptr; + int cnt; + + VALIDATE_STATE(s); + if (s->dma_dac.mapped) + return -ENXIO; + if (!s->dma_dac.ready && (ret = prog_dmabuf(s, 0))) + return ret; + if (!access_ok(VERIFY_READ, buffer, count)) + return -EFAULT; + ret = 0; + + calc_bob_rate(s); + + while (count > 0) { + spin_lock_irqsave(&s->lock, flags); + + if (s->dma_dac.count < 0) { + s->dma_dac.count = 0; + s->dma_dac.swptr = s->dma_dac.hwptr; + } + swptr = s->dma_dac.swptr; + + cnt = s->dma_dac.dmasize-swptr; + + if (s->dma_dac.count + cnt > s->dma_dac.dmasize) + cnt = s->dma_dac.dmasize - s->dma_dac.count; + + spin_unlock_irqrestore(&s->lock, flags); + + if (cnt > count) + cnt = count; + + if (cnt <= 0) { + start_dac(s); + if (file->f_flags & O_NONBLOCK) { + if(!ret) ret = -EAGAIN; + goto return_free; + } + if (!interruptible_sleep_on_timeout(&s->dma_dac.wait, HZ)) { + if(! s->card->in_suspend) printk(KERN_DEBUG "maestro: write: chip lockup? dmasz %u fragsz %u count %i hwptr %u swptr %u\n", + s->dma_dac.dmasize, s->dma_dac.fragsize, s->dma_dac.count, + s->dma_dac.hwptr, s->dma_dac.swptr); + stop_dac(s); + spin_lock_irqsave(&s->lock, flags); + set_dmaa(s, virt_to_bus(s->dma_dac.rawbuf), s->dma_dac.numfrag << s->dma_dac.fragshift); + /* program enhanced mode registers */ +/* wrindir(s, SV_CIDMAABASECOUNT1, (s->dma_dac.fragsamples-1) >> 8); + wrindir(s, SV_CIDMAABASECOUNT0, s->dma_dac.fragsamples-1); */ + /* FILL ME */ + s->dma_dac.count = s->dma_dac.hwptr = s->dma_dac.swptr = 0; + spin_unlock_irqrestore(&s->lock, flags); + } + if (signal_pending(current)) { + if (!ret) ret = -ERESTARTSYS; + goto return_free; + } + continue; + } + if (copy_from_user(s->dma_dac.rawbuf + swptr, buffer, cnt)) { + if (!ret) ret = -EFAULT; + goto return_free; + } +/* printk("wrote %d bytes at sw: %d cnt: %d while hw: %d\n",cnt, swptr, s->dma_dac.count, s->dma_dac.hwptr);*/ + + swptr = (swptr + cnt) % s->dma_dac.dmasize; + + spin_lock_irqsave(&s->lock, flags); + s->dma_dac.swptr = swptr; + s->dma_dac.count += cnt; + s->dma_dac.endcleared = 0; + spin_unlock_irqrestore(&s->lock, flags); + count -= cnt; + buffer += cnt; + ret += cnt; + start_dac(s); + } +return_free: + return ret; +} + +/* No kernel lock - we have our own spinlock */ +static unsigned int ess_poll(struct file *file, struct poll_table_struct *wait) +{ + struct ess_state *s = (struct ess_state *)file->private_data; + unsigned long flags; + unsigned int mask = 0; + + VALIDATE_STATE(s); + +/* In 0.14 prog_dmabuf always returns success anyway ... */ + if (file->f_mode & FMODE_WRITE) { + if (!s->dma_dac.ready && prog_dmabuf(s, 0)) + return 0; + } + if (file->f_mode & FMODE_READ) { + if (!s->dma_adc.ready && prog_dmabuf(s, 1)) + return 0; + } + + if (file->f_mode & FMODE_WRITE) + poll_wait(file, &s->dma_dac.wait, wait); + if (file->f_mode & FMODE_READ) + poll_wait(file, &s->dma_adc.wait, wait); + spin_lock_irqsave(&s->lock, flags); + ess_update_ptr(s); + if (file->f_mode & FMODE_READ) { + if (s->dma_adc.count >= (signed)s->dma_adc.fragsize) + mask |= POLLIN | POLLRDNORM; + } + if (file->f_mode & FMODE_WRITE) { + if (s->dma_dac.mapped) { + if (s->dma_dac.count >= (signed)s->dma_dac.fragsize) + mask |= POLLOUT | POLLWRNORM; + } else { + if ((signed)s->dma_dac.dmasize >= s->dma_dac.count + (signed)s->dma_dac.fragsize) + mask |= POLLOUT | POLLWRNORM; + } + } + spin_unlock_irqrestore(&s->lock, flags); + return mask; +} + +static int ess_mmap(struct file *file, struct vm_area_struct *vma) +{ + struct ess_state *s = (struct ess_state *)file->private_data; + struct dmabuf *db; + int ret = -EINVAL; + unsigned long size; + + VALIDATE_STATE(s); + lock_kernel(); + if (vma->vm_flags & VM_WRITE) { + if ((ret = prog_dmabuf(s, 1)) != 0) + goto out; + db = &s->dma_dac; + } else +#if 0 + /* if we can have the wp/wc do the combining + we can turn this back on. */ + if (vma->vm_flags & VM_READ) { + if ((ret = prog_dmabuf(s, 0)) != 0) + goto out; + db = &s->dma_adc; + } else +#endif + goto out; + ret = -EINVAL; + if (vma->vm_pgoff != 0) + goto out; + size = vma->vm_end - vma->vm_start; + if (size > (PAGE_SIZE << db->buforder)) + goto out; + ret = -EAGAIN; + if (remap_pfn_range(vma, vma->vm_start, + virt_to_phys(db->rawbuf) >> PAGE_SHIFT, + size, vma->vm_page_prot)) + goto out; + db->mapped = 1; + ret = 0; +out: + unlock_kernel(); + return ret; +} + +static int ess_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) +{ + struct ess_state *s = (struct ess_state *)file->private_data; + unsigned long flags; + audio_buf_info abinfo; + count_info cinfo; + int val, mapped, ret; + unsigned char fmtm, fmtd; + void __user *argp = (void __user *)arg; + int __user *p = argp; + +/* printk("maestro: ess_ioctl: cmd %d\n", cmd);*/ + + VALIDATE_STATE(s); + mapped = ((file->f_mode & FMODE_WRITE) && s->dma_dac.mapped) || + ((file->f_mode & FMODE_READ) && s->dma_adc.mapped); + switch (cmd) { + case OSS_GETVERSION: + return put_user(SOUND_VERSION, p); + + case SNDCTL_DSP_SYNC: + if (file->f_mode & FMODE_WRITE) + return drain_dac(s, file->f_flags & O_NONBLOCK); + return 0; + + case SNDCTL_DSP_SETDUPLEX: + /* XXX fix */ + return 0; + + case SNDCTL_DSP_GETCAPS: + return put_user(DSP_CAP_DUPLEX | DSP_CAP_REALTIME | DSP_CAP_TRIGGER | DSP_CAP_MMAP, p); + + case SNDCTL_DSP_RESET: + if (file->f_mode & FMODE_WRITE) { + stop_dac(s); + synchronize_irq(s->card->pcidev->irq); + s->dma_dac.swptr = s->dma_dac.hwptr = s->dma_dac.count = s->dma_dac.total_bytes = 0; + } + if (file->f_mode & FMODE_READ) { + stop_adc(s); + synchronize_irq(s->card->pcidev->irq); + s->dma_adc.swptr = s->dma_adc.hwptr = s->dma_adc.count = s->dma_adc.total_bytes = 0; + } + return 0; + + case SNDCTL_DSP_SPEED: + if (get_user(val, p)) + return -EFAULT; + if (val >= 0) { + if (file->f_mode & FMODE_READ) { + stop_adc(s); + s->dma_adc.ready = 0; + set_adc_rate(s, val); + } + if (file->f_mode & FMODE_WRITE) { + stop_dac(s); + s->dma_dac.ready = 0; + set_dac_rate(s, val); + } + } + return put_user((file->f_mode & FMODE_READ) ? s->rateadc : s->ratedac, p); + + case SNDCTL_DSP_STEREO: + if (get_user(val, p)) + return -EFAULT; + fmtd = 0; + fmtm = ~0; + if (file->f_mode & FMODE_READ) { + stop_adc(s); + s->dma_adc.ready = 0; + if (val) + fmtd |= ESS_FMT_STEREO << ESS_ADC_SHIFT; + else + fmtm &= ~(ESS_FMT_STEREO << ESS_ADC_SHIFT); + } + if (file->f_mode & FMODE_WRITE) { + stop_dac(s); + s->dma_dac.ready = 0; + if (val) + fmtd |= ESS_FMT_STEREO << ESS_DAC_SHIFT; + else + fmtm &= ~(ESS_FMT_STEREO << ESS_DAC_SHIFT); + } + set_fmt(s, fmtm, fmtd); + return 0; + + case SNDCTL_DSP_CHANNELS: + if (get_user(val, p)) + return -EFAULT; + if (val != 0) { + fmtd = 0; + fmtm = ~0; + if (file->f_mode & FMODE_READ) { + stop_adc(s); + s->dma_adc.ready = 0; + if (val >= 2) + fmtd |= ESS_FMT_STEREO << ESS_ADC_SHIFT; + else + fmtm &= ~(ESS_FMT_STEREO << ESS_ADC_SHIFT); + } + if (file->f_mode & FMODE_WRITE) { + stop_dac(s); + s->dma_dac.ready = 0; + if (val >= 2) + fmtd |= ESS_FMT_STEREO << ESS_DAC_SHIFT; + else + fmtm &= ~(ESS_FMT_STEREO << ESS_DAC_SHIFT); + } + set_fmt(s, fmtm, fmtd); + } + return put_user((s->fmt & ((file->f_mode & FMODE_READ) ? (ESS_FMT_STEREO << ESS_ADC_SHIFT) + : (ESS_FMT_STEREO << ESS_DAC_SHIFT))) ? 2 : 1, p); + + case SNDCTL_DSP_GETFMTS: /* Returns a mask */ + return put_user(AFMT_U8|AFMT_S16_LE, p); + + case SNDCTL_DSP_SETFMT: /* Selects ONE fmt*/ + if (get_user(val, p)) + return -EFAULT; + if (val != AFMT_QUERY) { + fmtd = 0; + fmtm = ~0; + if (file->f_mode & FMODE_READ) { + stop_adc(s); + s->dma_adc.ready = 0; + /* fixed at 16bit for now */ + fmtd |= ESS_FMT_16BIT << ESS_ADC_SHIFT; +#if 0 + if (val == AFMT_S16_LE) + fmtd |= ESS_FMT_16BIT << ESS_ADC_SHIFT; + else + fmtm &= ~(ESS_FMT_16BIT << ESS_ADC_SHIFT); +#endif + } + if (file->f_mode & FMODE_WRITE) { + stop_dac(s); + s->dma_dac.ready = 0; + if (val == AFMT_S16_LE) + fmtd |= ESS_FMT_16BIT << ESS_DAC_SHIFT; + else + fmtm &= ~(ESS_FMT_16BIT << ESS_DAC_SHIFT); + } + set_fmt(s, fmtm, fmtd); + } + return put_user((s->fmt & ((file->f_mode & FMODE_READ) ? + (ESS_FMT_16BIT << ESS_ADC_SHIFT) + : (ESS_FMT_16BIT << ESS_DAC_SHIFT))) ? + AFMT_S16_LE : + AFMT_U8, + p); + + case SNDCTL_DSP_POST: + return 0; + + case SNDCTL_DSP_GETTRIGGER: + val = 0; + if ((file->f_mode & FMODE_READ) && (s->enable & ADC_RUNNING)) + val |= PCM_ENABLE_INPUT; + if ((file->f_mode & FMODE_WRITE) && (s->enable & DAC_RUNNING)) + val |= PCM_ENABLE_OUTPUT; + return put_user(val, p); + + case SNDCTL_DSP_SETTRIGGER: + if (get_user(val, p)) + return -EFAULT; + if (file->f_mode & FMODE_READ) { + if (val & PCM_ENABLE_INPUT) { + if (!s->dma_adc.ready && (ret = prog_dmabuf(s, 1))) + return ret; + start_adc(s); + } else + stop_adc(s); + } + if (file->f_mode & FMODE_WRITE) { + if (val & PCM_ENABLE_OUTPUT) { + if (!s->dma_dac.ready && (ret = prog_dmabuf(s, 0))) + return ret; + start_dac(s); + } else + stop_dac(s); + } + return 0; + + case SNDCTL_DSP_GETOSPACE: + if (!(file->f_mode & FMODE_WRITE)) + return -EINVAL; + if (!s->dma_dac.ready && (ret = prog_dmabuf(s, 0))) + return ret; + spin_lock_irqsave(&s->lock, flags); + ess_update_ptr(s); + abinfo.fragsize = s->dma_dac.fragsize; + abinfo.bytes = s->dma_dac.dmasize - s->dma_dac.count; + abinfo.fragstotal = s->dma_dac.numfrag; + abinfo.fragments = abinfo.bytes >> s->dma_dac.fragshift; + spin_unlock_irqrestore(&s->lock, flags); + return copy_to_user(argp, &abinfo, sizeof(abinfo)) ? -EFAULT : 0; + + case SNDCTL_DSP_GETISPACE: + if (!(file->f_mode & FMODE_READ)) + return -EINVAL; + if (!s->dma_adc.ready && (ret = prog_dmabuf(s, 1))) + return ret; + spin_lock_irqsave(&s->lock, flags); + ess_update_ptr(s); + abinfo.fragsize = s->dma_adc.fragsize; + abinfo.bytes = s->dma_adc.count; + abinfo.fragstotal = s->dma_adc.numfrag; + abinfo.fragments = abinfo.bytes >> s->dma_adc.fragshift; + spin_unlock_irqrestore(&s->lock, flags); + return copy_to_user(argp, &abinfo, sizeof(abinfo)) ? -EFAULT : 0; + + case SNDCTL_DSP_NONBLOCK: + file->f_flags |= O_NONBLOCK; + return 0; + + case SNDCTL_DSP_GETODELAY: + if (!(file->f_mode & FMODE_WRITE)) + return -EINVAL; + if (!s->dma_dac.ready && (ret = prog_dmabuf(s, 0))) + return ret; + spin_lock_irqsave(&s->lock, flags); + ess_update_ptr(s); + val = s->dma_dac.count; + spin_unlock_irqrestore(&s->lock, flags); + return put_user(val, p); + + case SNDCTL_DSP_GETIPTR: + if (!(file->f_mode & FMODE_READ)) + return -EINVAL; + if (!s->dma_adc.ready && (ret = prog_dmabuf(s, 1))) + return ret; + spin_lock_irqsave(&s->lock, flags); + ess_update_ptr(s); + cinfo.bytes = s->dma_adc.total_bytes; + cinfo.blocks = s->dma_adc.count >> s->dma_adc.fragshift; + cinfo.ptr = s->dma_adc.hwptr; + if (s->dma_adc.mapped) + s->dma_adc.count &= s->dma_adc.fragsize-1; + spin_unlock_irqrestore(&s->lock, flags); + if (copy_to_user(argp, &cinfo, sizeof(cinfo))) + return -EFAULT; + return 0; + + case SNDCTL_DSP_GETOPTR: + if (!(file->f_mode & FMODE_WRITE)) + return -EINVAL; + if (!s->dma_dac.ready && (ret = prog_dmabuf(s, 0))) + return ret; + spin_lock_irqsave(&s->lock, flags); + ess_update_ptr(s); + cinfo.bytes = s->dma_dac.total_bytes; + cinfo.blocks = s->dma_dac.count >> s->dma_dac.fragshift; + cinfo.ptr = s->dma_dac.hwptr; + if (s->dma_dac.mapped) + s->dma_dac.count &= s->dma_dac.fragsize-1; + spin_unlock_irqrestore(&s->lock, flags); + if (copy_to_user(argp, &cinfo, sizeof(cinfo))) + return -EFAULT; + return 0; + + case SNDCTL_DSP_GETBLKSIZE: + if (file->f_mode & FMODE_WRITE) { + if ((val = prog_dmabuf(s, 0))) + return val; + return put_user(s->dma_dac.fragsize, p); + } + if ((val = prog_dmabuf(s, 1))) + return val; + return put_user(s->dma_adc.fragsize, p); + + case SNDCTL_DSP_SETFRAGMENT: + if (get_user(val, p)) + return -EFAULT; + M_printk("maestro: SETFRAGMENT: %0x\n",val); + if (file->f_mode & FMODE_READ) { + s->dma_adc.ossfragshift = val & 0xffff; + s->dma_adc.ossmaxfrags = (val >> 16) & 0xffff; + if (s->dma_adc.ossfragshift < 4) + s->dma_adc.ossfragshift = 4; + if (s->dma_adc.ossfragshift > 15) + s->dma_adc.ossfragshift = 15; + if (s->dma_adc.ossmaxfrags < 4) + s->dma_adc.ossmaxfrags = 4; + } + if (file->f_mode & FMODE_WRITE) { + s->dma_dac.ossfragshift = val & 0xffff; + s->dma_dac.ossmaxfrags = (val >> 16) & 0xffff; + if (s->dma_dac.ossfragshift < 4) + s->dma_dac.ossfragshift = 4; + if (s->dma_dac.ossfragshift > 15) + s->dma_dac.ossfragshift = 15; + if (s->dma_dac.ossmaxfrags < 4) + s->dma_dac.ossmaxfrags = 4; + } + return 0; + + case SNDCTL_DSP_SUBDIVIDE: + if ((file->f_mode & FMODE_READ && s->dma_adc.subdivision) || + (file->f_mode & FMODE_WRITE && s->dma_dac.subdivision)) + return -EINVAL; + if (get_user(val, p)) + return -EFAULT; + if (val != 1 && val != 2 && val != 4) + return -EINVAL; + if (file->f_mode & FMODE_READ) + s->dma_adc.subdivision = val; + if (file->f_mode & FMODE_WRITE) + s->dma_dac.subdivision = val; + return 0; + + case SOUND_PCM_READ_RATE: + return put_user((file->f_mode & FMODE_READ) ? s->rateadc : s->ratedac, p); + + case SOUND_PCM_READ_CHANNELS: + return put_user((s->fmt & ((file->f_mode & FMODE_READ) ? (ESS_FMT_STEREO << ESS_ADC_SHIFT) + : (ESS_FMT_STEREO << ESS_DAC_SHIFT))) ? 2 : 1, p); + + case SOUND_PCM_READ_BITS: + return put_user((s->fmt & ((file->f_mode & FMODE_READ) ? (ESS_FMT_16BIT << ESS_ADC_SHIFT) + : (ESS_FMT_16BIT << ESS_DAC_SHIFT))) ? 16 : 8, p); + + case SOUND_PCM_WRITE_FILTER: + case SNDCTL_DSP_SETSYNCRO: + case SOUND_PCM_READ_FILTER: + return -EINVAL; + + } + return -EINVAL; +} + +static void +set_base_registers(struct ess_state *s,void *vaddr) +{ + unsigned long packed_phys = virt_to_bus(vaddr)>>12; + wave_set_register(s, 0x01FC , packed_phys); + wave_set_register(s, 0x01FD , packed_phys); + wave_set_register(s, 0x01FE , packed_phys); + wave_set_register(s, 0x01FF , packed_phys); +} + +/* + * this guy makes sure we're in the right power + * state for what we want to be doing + */ +static void maestro_power(struct ess_card *card, int tostate) +{ + u16 active_mask = acpi_state_mask[tostate]; + u8 state; + + if(!use_pm) return; + + pci_read_config_byte(card->pcidev, card->power_regs+0x4, &state); + state&=3; + + /* make sure we're in the right state */ + if(state != tostate) { + M_printk(KERN_WARNING "maestro: dev %02x:%02x.%x switching from D%d to D%d\n", + card->pcidev->bus->number, + PCI_SLOT(card->pcidev->devfn), + PCI_FUNC(card->pcidev->devfn), + state,tostate); + pci_write_config_byte(card->pcidev, card->power_regs+0x4, tostate); + } + + /* and make sure the units we care about are on + XXX we might want to do this before state flipping? */ + pci_write_config_word(card->pcidev, 0x54, ~ active_mask); + pci_write_config_word(card->pcidev, 0x56, ~ active_mask); +} + +/* we allocate a large power of two for all our memory. + this is cut up into (not to scale :): + |silly fifo word | 512byte mixbuf per adc | dac/adc * channels | +*/ +static int +allocate_buffers(struct ess_state *s) +{ + void *rawbuf=NULL; + int order,i; + struct page *page, *pend; + + /* alloc as big a chunk as we can */ + for (order = (dsps_order + (16-PAGE_SHIFT) + 1); order >= (dsps_order + 2 + 1); order--) + if((rawbuf = (void *)__get_free_pages(GFP_KERNEL|GFP_DMA, order))) + break; + + if (!rawbuf) + return 1; + + M_printk("maestro: allocated %ld (%d) bytes at %p\n",PAGE_SIZE<<order,order, rawbuf); + + if ((virt_to_bus(rawbuf) + (PAGE_SIZE << order) - 1) & ~((1<<28)-1)) { + printk(KERN_ERR "maestro: DMA buffer beyond 256MB! busaddr 0x%lx size %ld\n", + virt_to_bus(rawbuf), PAGE_SIZE << order); + kfree(rawbuf); + return 1; + } + + s->card->dmapages = rawbuf; + s->card->dmaorder = order; + + for(i=0;i<NR_DSPS;i++) { + struct ess_state *ess = &s->card->channels[i]; + + if(ess->dev_audio == -1) + continue; + + ess->dma_dac.ready = s->dma_dac.mapped = 0; + ess->dma_adc.ready = s->dma_adc.mapped = 0; + ess->dma_adc.buforder = ess->dma_dac.buforder = order - 1 - dsps_order - 1; + + /* offset dac and adc buffers starting half way through and then at each [da][ad]c's + order's intervals.. */ + ess->dma_dac.rawbuf = rawbuf + (PAGE_SIZE<<(order-1)) + (i * ( PAGE_SIZE << (ess->dma_dac.buforder + 1 ))); + ess->dma_adc.rawbuf = ess->dma_dac.rawbuf + ( PAGE_SIZE << ess->dma_dac.buforder); + /* offset mixbuf by a mixbuf so that the lame status fifo can + happily scribble away.. */ + ess->mixbuf = rawbuf + (512 * (i+1)); + + M_printk("maestro: setup apu %d: dac: %p adc: %p mix: %p\n",i,ess->dma_dac.rawbuf, + ess->dma_adc.rawbuf, ess->mixbuf); + + } + + /* now mark the pages as reserved; otherwise remap_pfn_range doesn't do what we want */ + pend = virt_to_page(rawbuf + (PAGE_SIZE << order) - 1); + for (page = virt_to_page(rawbuf); page <= pend; page++) + SetPageReserved(page); + + return 0; +} +static void +free_buffers(struct ess_state *s) +{ + struct page *page, *pend; + + s->dma_dac.rawbuf = s->dma_adc.rawbuf = NULL; + s->dma_dac.mapped = s->dma_adc.mapped = 0; + s->dma_dac.ready = s->dma_adc.ready = 0; + + M_printk("maestro: freeing %p\n",s->card->dmapages); + /* undo marking the pages as reserved */ + + pend = virt_to_page(s->card->dmapages + (PAGE_SIZE << s->card->dmaorder) - 1); + for (page = virt_to_page(s->card->dmapages); page <= pend; page++) + ClearPageReserved(page); + + free_pages((unsigned long)s->card->dmapages,s->card->dmaorder); + s->card->dmapages = NULL; +} + +static int +ess_open(struct inode *inode, struct file *file) +{ + unsigned int minor = iminor(inode); + struct ess_state *s = NULL; + unsigned char fmtm = ~0, fmts = 0; + struct pci_dev *pdev = NULL; + /* + * Scan the cards and find the channel. We only + * do this at open time so it is ok + */ + + while ((pdev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pdev)) != NULL) { + struct ess_card *c; + struct pci_driver *drvr; + + drvr = pci_dev_driver (pdev); + if (drvr == &maestro_pci_driver) { + int i; + struct ess_state *sp; + + c = (struct ess_card*)pci_get_drvdata (pdev); + if (!c) + continue; + for(i=0;i<NR_DSPS;i++) + { + sp=&c->channels[i]; + if(sp->dev_audio < 0) + continue; + if((sp->dev_audio ^ minor) & ~0xf) + continue; + s=sp; + } + } + } + if (!s) + return -ENODEV; + + VALIDATE_STATE(s); + file->private_data = s; + /* wait for device to become free */ + down(&s->open_sem); + while (s->open_mode & file->f_mode) { + if (file->f_flags & O_NONBLOCK) { + up(&s->open_sem); + return -EWOULDBLOCK; + } + up(&s->open_sem); + interruptible_sleep_on(&s->open_wait); + if (signal_pending(current)) + return -ERESTARTSYS; + down(&s->open_sem); + } + + /* under semaphore.. */ + if ((s->card->dmapages==NULL) && allocate_buffers(s)) { + up(&s->open_sem); + return -ENOMEM; + } + + /* we're covered by the open_sem */ + if( ! s->card->dsps_open ) { + maestro_power(s->card,ACPI_D0); + start_bob(s); + } + s->card->dsps_open++; + M_printk("maestro: open, %d bobs now\n",s->card->dsps_open); + + /* ok, lets write WC base regs now that we've + powered up the chip */ + M_printk("maestro: writing 0x%lx (bus 0x%lx) to the wp\n",virt_to_bus(s->card->dmapages), + ((virt_to_bus(s->card->dmapages))&0xFFE00000)>>12); + set_base_registers(s,s->card->dmapages); + + if (file->f_mode & FMODE_READ) { +/* + fmtm &= ~((ESS_FMT_STEREO | ESS_FMT_16BIT) << ESS_ADC_SHIFT); + if ((minor & 0xf) == SND_DEV_DSP16) + fmts |= ESS_FMT_16BIT << ESS_ADC_SHIFT; */ + + fmtm &= ~((ESS_FMT_STEREO|ESS_FMT_16BIT) << ESS_ADC_SHIFT); + fmts = (ESS_FMT_STEREO|ESS_FMT_16BIT) << ESS_ADC_SHIFT; + + s->dma_adc.ossfragshift = s->dma_adc.ossmaxfrags = s->dma_adc.subdivision = 0; + set_adc_rate(s, 8000); + } + if (file->f_mode & FMODE_WRITE) { + fmtm &= ~((ESS_FMT_STEREO | ESS_FMT_16BIT) << ESS_DAC_SHIFT); + if ((minor & 0xf) == SND_DEV_DSP16) + fmts |= ESS_FMT_16BIT << ESS_DAC_SHIFT; + + s->dma_dac.ossfragshift = s->dma_dac.ossmaxfrags = s->dma_dac.subdivision = 0; + set_dac_rate(s, 8000); + } + set_fmt(s, fmtm, fmts); + s->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE); + + up(&s->open_sem); + return nonseekable_open(inode, file); +} + +static int +ess_release(struct inode *inode, struct file *file) +{ + struct ess_state *s = (struct ess_state *)file->private_data; + + VALIDATE_STATE(s); + lock_kernel(); + if (file->f_mode & FMODE_WRITE) + drain_dac(s, file->f_flags & O_NONBLOCK); + down(&s->open_sem); + if (file->f_mode & FMODE_WRITE) { + stop_dac(s); + } + if (file->f_mode & FMODE_READ) { + stop_adc(s); + } + + s->open_mode &= (~file->f_mode) & (FMODE_READ|FMODE_WRITE); + /* we're covered by the open_sem */ + M_printk("maestro: %d dsps now alive\n",s->card->dsps_open-1); + if( --s->card->dsps_open <= 0) { + s->card->dsps_open = 0; + stop_bob(s); + free_buffers(s); + maestro_power(s->card,ACPI_D2); + } + up(&s->open_sem); + wake_up(&s->open_wait); + unlock_kernel(); + return 0; +} + +static struct file_operations ess_audio_fops = { + .owner = THIS_MODULE, + .llseek = no_llseek, + .read = ess_read, + .write = ess_write, + .poll = ess_poll, + .ioctl = ess_ioctl, + .mmap = ess_mmap, + .open = ess_open, + .release = ess_release, +}; + +static int +maestro_config(struct ess_card *card) +{ + struct pci_dev *pcidev = card->pcidev; + struct ess_state *ess = &card->channels[0]; + int apu,iobase = card->iobase; + u16 w; + u32 n; + + /* We used to muck around with pci config space that + * we had no business messing with. We don't know enough + * about the machine to know which DMA mode is appropriate, + * etc. We were guessing wrong on some machines and making + * them unhappy. We now trust in the BIOS to do things right, + * which almost certainly means a new host of problems will + * arise with broken BIOS implementations. screw 'em. + * We're already intolerant of machines that don't assign + * IRQs. + */ + + /* do config work at full power */ + maestro_power(card,ACPI_D0); + + pci_read_config_word(pcidev, 0x50, &w); + + w&=~(1<<5); /* Don't swap left/right (undoc)*/ + + pci_write_config_word(pcidev, 0x50, w); + + pci_read_config_word(pcidev, 0x52, &w); + w&=~(1<<15); /* Turn off internal clock multiplier */ + /* XXX how do we know which to use? */ + w&=~(1<<14); /* External clock */ + + w|= (1<<7); /* Hardware volume control on */ + w|= (1<<6); /* Debounce off: easier to push the HWV buttons. */ + w&=~(1<<5); /* GPIO 4:5 */ + w|= (1<<4); /* Disconnect from the CHI. Enabling this made a dell 7500 work. */ + w&=~(1<<2); /* MIDI fix off (undoc) */ + w&=~(1<<1); /* reserved, always write 0 */ + pci_write_config_word(pcidev, 0x52, w); + + /* + * Legacy mode + */ + + pci_read_config_word(pcidev, 0x40, &w); + w|=(1<<15); /* legacy decode off */ + w&=~(1<<14); /* Disable SIRQ */ + w&=~(0x1f); /* disable mpu irq/io, game port, fm, SB */ + + pci_write_config_word(pcidev, 0x40, w); + + /* Set up 978 docking control chip. */ + pci_read_config_word(pcidev, 0x58, &w); + w|=1<<2; /* Enable 978. */ + w|=1<<3; /* Turn on 978 hardware volume control. */ + w&=~(1<<11); /* Turn on 978 mixer volume control. */ + pci_write_config_word(pcidev, 0x58, w); + + sound_reset(iobase); + + /* + * Ring Bus Setup + */ + + /* setup usual 0x34 stuff.. 0x36 may be chip specific */ + outw(0xC090, iobase+0x34); /* direct sound, stereo */ + udelay(20); + outw(0x3000, iobase+0x36); /* direct sound, stereo */ + udelay(20); + + + /* + * Reset the CODEC + */ + + maestro_ac97_reset(iobase,pcidev); + + /* + * Ring Bus Setup + */ + + n=inl(iobase+0x34); + n&=~0xF000; + n|=12<<12; /* Direct Sound, Stereo */ + outl(n, iobase+0x34); + + n=inl(iobase+0x34); + n&=~0x0F00; /* Modem off */ + outl(n, iobase+0x34); + + n=inl(iobase+0x34); + n&=~0x00F0; + n|=9<<4; /* DAC, Stereo */ + outl(n, iobase+0x34); + + n=inl(iobase+0x34); + n&=~0x000F; /* ASSP off */ + outl(n, iobase+0x34); + + n=inl(iobase+0x34); + n|=(1<<29); /* Enable ring bus */ + outl(n, iobase+0x34); + + n=inl(iobase+0x34); + n|=(1<<28); /* Enable serial bus */ + outl(n, iobase+0x34); + + n=inl(iobase+0x34); + n&=~0x00F00000; /* MIC off */ + outl(n, iobase+0x34); + + n=inl(iobase+0x34); + n&=~0x000F0000; /* I2S off */ + outl(n, iobase+0x34); + + + w=inw(iobase+0x18); + w&=~(1<<7); /* ClkRun off */ + outw(w, iobase+0x18); + + w=inw(iobase+0x18); + w&=~(1<<6); /* Hardware volume control interrupt off... for now. */ + outw(w, iobase+0x18); + + w=inw(iobase+0x18); + w&=~(1<<4); /* ASSP irq off */ + outw(w, iobase+0x18); + + w=inw(iobase+0x18); + w&=~(1<<3); /* ISDN irq off */ + outw(w, iobase+0x18); + + w=inw(iobase+0x18); + w|=(1<<2); /* Direct Sound IRQ on */ + outw(w, iobase+0x18); + + w=inw(iobase+0x18); + w&=~(1<<1); /* MPU401 IRQ off */ + outw(w, iobase+0x18); + + w=inw(iobase+0x18); + w|=(1<<0); /* SB IRQ on */ + outw(w, iobase+0x18); + + /* Set hardware volume control registers to midpoints. + We can tell which button was pushed based on how they change. */ + outb(0x88, iobase+0x1c); + outb(0x88, iobase+0x1d); + outb(0x88, iobase+0x1e); + outb(0x88, iobase+0x1f); + + /* it appears some maestros (dell 7500) only work if these are set, + regardless of whether we use the assp or not. */ + + outb(0, iobase+0xA4); + outb(3, iobase+0xA2); + outb(0, iobase+0xA6); + + for(apu=0;apu<16;apu++) + { + /* Write 0 into the buffer area 0x1E0->1EF */ + outw(0x01E0+apu, 0x10+iobase); + outw(0x0000, 0x12+iobase); + + /* + * The 1.10 test program seem to write 0 into the buffer area + * 0x1D0-0x1DF too. + */ + outw(0x01D0+apu, 0x10+iobase); + outw(0x0000, 0x12+iobase); + } + +#if 1 + wave_set_register(ess, IDR7_WAVE_ROMRAM, + (wave_get_register(ess, IDR7_WAVE_ROMRAM)&0xFF00)); + wave_set_register(ess, IDR7_WAVE_ROMRAM, + wave_get_register(ess, IDR7_WAVE_ROMRAM)|0x100); + wave_set_register(ess, IDR7_WAVE_ROMRAM, + wave_get_register(ess, IDR7_WAVE_ROMRAM)&~0x200); + wave_set_register(ess, IDR7_WAVE_ROMRAM, + wave_get_register(ess, IDR7_WAVE_ROMRAM)|~0x400); +#else + maestro_write(ess, IDR7_WAVE_ROMRAM, + (maestro_read(ess, IDR7_WAVE_ROMRAM)&0xFF00)); + maestro_write(ess, IDR7_WAVE_ROMRAM, + maestro_read(ess, IDR7_WAVE_ROMRAM)|0x100); + maestro_write(ess, IDR7_WAVE_ROMRAM, + maestro_read(ess, IDR7_WAVE_ROMRAM)&~0x200); + maestro_write(ess, IDR7_WAVE_ROMRAM, + maestro_read(ess, IDR7_WAVE_ROMRAM)|0x400); +#endif + + maestro_write(ess, IDR2_CRAM_DATA, 0x0000); + maestro_write(ess, 0x08, 0xB004); + /* Now back to the DirectSound stuff */ + maestro_write(ess, 0x09, 0x001B); + maestro_write(ess, 0x0A, 0x8000); + maestro_write(ess, 0x0B, 0x3F37); + maestro_write(ess, 0x0C, 0x0098); + + /* parallel out ?? */ + maestro_write(ess, 0x0C, + (maestro_read(ess, 0x0C)&~0xF000)|0x8000); + /* parallel in, has something to do with recording :) */ + maestro_write(ess, 0x0C, + (maestro_read(ess, 0x0C)&~0x0F00)|0x0500); + + maestro_write(ess, 0x0D, 0x7632); + + /* Wave cache control on - test off, sg off, + enable, enable extra chans 1Mb */ + + outw(inw(0x14+iobase)|(1<<8),0x14+iobase); + outw(inw(0x14+iobase)&0xFE03,0x14+iobase); + outw((inw(0x14+iobase)&0xFFFC), 0x14+iobase); + outw(inw(0x14+iobase)|(1<<7),0x14+iobase); + + outw(0xA1A0, 0x14+iobase); /* 0300 ? */ + + /* Now clear the APU control ram */ + for(apu=0;apu<NR_APUS;apu++) + { + for(w=0;w<NR_APU_REGS;w++) + apu_set_register(ess, apu|ESS_CHAN_HARD, w, 0); + + } + + return 0; + +} + +/* this guy tries to find the pci power management + * register bank. this should really be in core + * code somewhere. 1 on success. */ +static int +parse_power(struct ess_card *card, struct pci_dev *pcidev) +{ + u32 n; + u16 w; + u8 next; + int max = 64; /* an a 8bit guy pointing to 32bit guys + can only express so much. */ + + card->power_regs = 0; + + /* check to see if we have a capabilities list in + the config register */ + pci_read_config_word(pcidev, PCI_STATUS, &w); + if(!(w & PCI_STATUS_CAP_LIST)) return 0; + + /* walk the list, starting at the head. */ + pci_read_config_byte(pcidev,PCI_CAPABILITY_LIST,&next); + + while(next && max--) { + pci_read_config_dword(pcidev, next & ~3, &n); + if((n & 0xff) == PCI_CAP_ID_PM) { + card->power_regs = next; + break; + } + next = ((n>>8) & 0xff); + } + + return card->power_regs ? 1 : 0; +} + +static int __init +maestro_probe(struct pci_dev *pcidev,const struct pci_device_id *pdid) +{ + int card_type = pdid->driver_data; + u32 n; + int iobase; + int i, ret; + struct ess_card *card; + struct ess_state *ess; + struct pm_dev *pmdev; + int num = 0; + +/* when built into the kernel, we only print version if device is found */ +#ifndef MODULE + static int printed_version; + if (!printed_version++) + printk(version); +#endif + + /* don't pick up weird modem maestros */ + if(((pcidev->class >> 8) & 0xffff) != PCI_CLASS_MULTIMEDIA_AUDIO) + return -ENODEV; + + + if ((ret=pci_enable_device(pcidev))) + return ret; + + iobase = pci_resource_start(pcidev,0); + if (!iobase || !(pci_resource_flags(pcidev, 0 ) & IORESOURCE_IO)) + return -ENODEV; + + if(pcidev->irq == 0) + return -ENODEV; + + /* stake our claim on the iospace */ + if( request_region(iobase, 256, card_names[card_type]) == NULL ) + { + printk(KERN_WARNING "maestro: can't allocate 256 bytes I/O at 0x%4.4x\n", iobase); + return -EBUSY; + } + + /* just to be sure */ + pci_set_master(pcidev); + + card = kmalloc(sizeof(struct ess_card), GFP_KERNEL); + if(card == NULL) + { + printk(KERN_WARNING "maestro: out of memory\n"); + release_region(iobase, 256); + return -ENOMEM; + } + + memset(card, 0, sizeof(*card)); + card->pcidev = pcidev; + + pmdev = pm_register(PM_PCI_DEV, PM_PCI_ID(pcidev), + maestro_pm_callback); + if (pmdev) + pmdev->data = card; + + card->iobase = iobase; + card->card_type = card_type; + card->irq = pcidev->irq; + card->magic = ESS_CARD_MAGIC; + spin_lock_init(&card->lock); + init_waitqueue_head(&card->suspend_queue); + + card->dock_mute_vol = 50; + + /* init our groups of 6 apus */ + for(i=0;i<NR_DSPS;i++) + { + struct ess_state *s=&card->channels[i]; + + s->index = i; + + s->card = card; + init_waitqueue_head(&s->dma_adc.wait); + init_waitqueue_head(&s->dma_dac.wait); + init_waitqueue_head(&s->open_wait); + spin_lock_init(&s->lock); + init_MUTEX(&s->open_sem); + s->magic = ESS_STATE_MAGIC; + + s->apu[0] = 6*i; + s->apu[1] = (6*i)+1; + s->apu[2] = (6*i)+2; + s->apu[3] = (6*i)+3; + s->apu[4] = (6*i)+4; + s->apu[5] = (6*i)+5; + + if(s->dma_adc.ready || s->dma_dac.ready || s->dma_adc.rawbuf) + printk("maestro: BOTCH!\n"); + /* register devices */ + if ((s->dev_audio = register_sound_dsp(&ess_audio_fops, -1)) < 0) + break; + } + + num = i; + + /* clear the rest if we ran out of slots to register */ + for(;i<NR_DSPS;i++) + { + struct ess_state *s=&card->channels[i]; + s->dev_audio = -1; + } + + ess = &card->channels[0]; + + /* + * Ok card ready. Begin setup proper + */ + + printk(KERN_INFO "maestro: Configuring %s found at IO 0x%04X IRQ %d\n", + card_names[card_type],iobase,card->irq); + pci_read_config_dword(pcidev, PCI_SUBSYSTEM_VENDOR_ID, &n); + printk(KERN_INFO "maestro: subvendor id: 0x%08x\n",n); + + /* turn off power management unless: + * - the user explicitly asks for it + * or + * - we're not a 2e, lesser chipps seem to have problems. + * - we're not on our _very_ small whitelist. some implemenetations + * really don't like the pm code, others require it. + * feel free to expand this as required. + */ +#define SUBSYSTEM_VENDOR(x) (x&0xffff) + if( (use_pm != 1) && + ((card_type != TYPE_MAESTRO2E) || (SUBSYSTEM_VENDOR(n) != 0x1028))) + use_pm = 0; + + if(!use_pm) + printk(KERN_INFO "maestro: not attempting power management.\n"); + else { + if(!parse_power(card,pcidev)) + printk(KERN_INFO "maestro: no PCI power management interface found.\n"); + else { + pci_read_config_dword(pcidev, card->power_regs, &n); + printk(KERN_INFO "maestro: PCI power management capability: 0x%x\n",n>>16); + } + } + + maestro_config(card); + + if(maestro_ac97_get(card, 0x00)==0x0080) { + printk(KERN_ERR "maestro: my goodness! you seem to have a pt101 codec, which is quite rare.\n" + "\tyou should tell someone about this.\n"); + } else { + maestro_ac97_init(card); + } + + if ((card->dev_mixer = register_sound_mixer(&ess_mixer_fops, -1)) < 0) { + printk("maestro: couldn't register mixer!\n"); + } else { + memcpy(card->mix.mixer_state,mixer_defaults,sizeof(card->mix.mixer_state)); + mixer_push_state(card); + } + + if((ret=request_irq(card->irq, ess_interrupt, SA_SHIRQ, card_names[card_type], card))) + { + printk(KERN_ERR "maestro: unable to allocate irq %d,\n", card->irq); + unregister_sound_mixer(card->dev_mixer); + for(i=0;i<NR_DSPS;i++) + { + struct ess_state *s = &card->channels[i]; + if(s->dev_audio != -1) + unregister_sound_dsp(s->dev_audio); + } + release_region(card->iobase, 256); + unregister_reboot_notifier(&maestro_nb); + kfree(card); + return ret; + } + + /* Turn on hardware volume control interrupt. + This has to come after we grab the IRQ above, + or a crash will result on installation if a button has been pressed, + because in that case we'll get an immediate interrupt. */ + n = inw(iobase+0x18); + n|=(1<<6); + outw(n, iobase+0x18); + + pci_set_drvdata(pcidev,card); + /* now go to sleep 'till something interesting happens */ + maestro_power(card,ACPI_D2); + + printk(KERN_INFO "maestro: %d channels configured.\n", num); + return 0; +} + +static void maestro_remove(struct pci_dev *pcidev) { + struct ess_card *card = pci_get_drvdata(pcidev); + int i; + u32 n; + + /* XXX maybe should force stop bob, but should be all + stopped by _release by now */ + + /* Turn off hardware volume control interrupt. + This has to come before we leave the IRQ below, + or a crash results if a button is pressed ! */ + n = inw(card->iobase+0x18); + n&=~(1<<6); + outw(n, card->iobase+0x18); + + free_irq(card->irq, card); + unregister_sound_mixer(card->dev_mixer); + for(i=0;i<NR_DSPS;i++) + { + struct ess_state *ess = &card->channels[i]; + if(ess->dev_audio != -1) + unregister_sound_dsp(ess->dev_audio); + } + /* Goodbye, Mr. Bond. */ + maestro_power(card,ACPI_D3); + release_region(card->iobase, 256); + kfree(card); + pci_set_drvdata(pcidev,NULL); +} + +static struct pci_device_id maestro_pci_tbl[] = { + {PCI_VENDOR_ESS, PCI_DEVICE_ID_ESS_ESS1968, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_MAESTRO2}, + {PCI_VENDOR_ESS, PCI_DEVICE_ID_ESS_ESS1978, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_MAESTRO2E}, + {PCI_VENDOR_ESS_OLD, PCI_DEVICE_ID_ESS_ESS0100, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_MAESTRO}, + {0,} +}; +MODULE_DEVICE_TABLE(pci, maestro_pci_tbl); + +static struct pci_driver maestro_pci_driver = { + .name = "maestro", + .id_table = maestro_pci_tbl, + .probe = maestro_probe, + .remove = maestro_remove, +}; + +static int __init init_maestro(void) +{ + int rc; + + rc = pci_module_init(&maestro_pci_driver); + if (rc < 0) + return rc; + + if (register_reboot_notifier(&maestro_nb)) + printk(KERN_WARNING "maestro: reboot notifier registration failed; may not reboot properly.\n"); +#ifdef MODULE + printk(version); +#endif + if (dsps_order < 0) { + dsps_order = 1; + printk(KERN_WARNING "maestro: clipping dsps_order to %d\n",dsps_order); + } + else if (dsps_order > MAX_DSP_ORDER) { + dsps_order = MAX_DSP_ORDER; + printk(KERN_WARNING "maestro: clipping dsps_order to %d\n",dsps_order); + } + return 0; +} + +static int maestro_notifier(struct notifier_block *nb, unsigned long event, void *buf) +{ + /* this notifier is called when the kernel is really shut down. */ + M_printk("maestro: shutting down\n"); + /* this will remove all card instances too */ + pci_unregister_driver(&maestro_pci_driver); + /* XXX dunno about power management */ + return NOTIFY_OK; +} + +/* --------------------------------------------------------------------- */ + + +static void cleanup_maestro(void) { + M_printk("maestro: unloading\n"); + pci_unregister_driver(&maestro_pci_driver); + pm_unregister_all(maestro_pm_callback); + unregister_reboot_notifier(&maestro_nb); +} + +/* --------------------------------------------------------------------- */ + +void +check_suspend(struct ess_card *card) +{ + DECLARE_WAITQUEUE(wait, current); + + if(!card->in_suspend) return; + + card->in_suspend++; + add_wait_queue(&(card->suspend_queue), &wait); + current->state = TASK_UNINTERRUPTIBLE; + schedule(); + remove_wait_queue(&(card->suspend_queue), &wait); + current->state = TASK_RUNNING; +} + +static int +maestro_suspend(struct ess_card *card) +{ + unsigned long flags; + int i,j; + + spin_lock_irqsave(&card->lock,flags); /* over-kill */ + + M_printk("maestro: apm in dev %p\n",card); + + /* we have to read from the apu regs, need + to power it up */ + maestro_power(card,ACPI_D0); + + for(i=0;i<NR_DSPS;i++) { + struct ess_state *s = &card->channels[i]; + + if(s->dev_audio == -1) + continue; + + M_printk("maestro: stopping apus for device %d\n",i); + stop_dac(s); + stop_adc(s); + for(j=0;j<6;j++) + card->apu_map[s->apu[j]][5]=apu_get_register(s,j,5); + + } + + /* get rid of interrupts? */ + if( card->dsps_open > 0) + stop_bob(&card->channels[0]); + + card->in_suspend++; + + spin_unlock_irqrestore(&card->lock,flags); + + /* we trust in the bios to power down the chip on suspend. + * XXX I'm also not sure that in_suspend will protect + * against all reg accesses from here on out. + */ + return 0; +} +static int +maestro_resume(struct ess_card *card) +{ + unsigned long flags; + int i; + + spin_lock_irqsave(&card->lock,flags); /* over-kill */ + + card->in_suspend = 0; + + M_printk("maestro: resuming card at %p\n",card); + + /* restore all our config */ + maestro_config(card); + /* need to restore the base pointers.. */ + if(card->dmapages) + set_base_registers(&card->channels[0],card->dmapages); + + mixer_push_state(card); + + /* set each channels' apu control registers before + * restoring audio + */ + for(i=0;i<NR_DSPS;i++) { + struct ess_state *s = &card->channels[i]; + int chan,reg; + + if(s->dev_audio == -1) + continue; + + for(chan = 0 ; chan < 6 ; chan++) { + wave_set_register(s,s->apu[chan]<<3,s->apu_base[chan]); + for(reg = 1 ; reg < NR_APU_REGS ; reg++) + apu_set_register(s,chan,reg,s->card->apu_map[s->apu[chan]][reg]); + } + for(chan = 0 ; chan < 6 ; chan++) + apu_set_register(s,chan,0,s->card->apu_map[s->apu[chan]][0] & 0xFF0F); + } + + /* now we flip on the music */ + + if( card->dsps_open <= 0) { + /* this card's idle */ + maestro_power(card,ACPI_D2); + } else { + /* ok, we're actually playing things on + this card */ + maestro_power(card,ACPI_D0); + start_bob(&card->channels[0]); + for(i=0;i<NR_DSPS;i++) { + struct ess_state *s = &card->channels[i]; + + /* these use the apu_mode, and can handle + spurious calls */ + start_dac(s); + start_adc(s); + } + } + + spin_unlock_irqrestore(&card->lock,flags); + + /* all right, we think things are ready, + wake up people who were using the device + when we suspended */ + wake_up(&(card->suspend_queue)); + + return 0; +} + +int +maestro_pm_callback(struct pm_dev *dev, pm_request_t rqst, void *data) +{ + struct ess_card *card = (struct ess_card*) dev->data; + + if ( ! card ) goto out; + + M_printk("maestro: pm event 0x%x received for card %p\n", rqst, card); + + switch (rqst) { + case PM_SUSPEND: + maestro_suspend(card); + break; + case PM_RESUME: + maestro_resume(card); + break; + /* + * we'd also like to find out about + * power level changes because some biosen + * do mean things to the maestro when they + * change their power state. + */ + } +out: + return 0; +} + +module_init(init_maestro); +module_exit(cleanup_maestro); |