/***************************************************************************** * * ESS Maestro3/Allegro driver for Linux 2.4.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 2000 Zach Brown <zab@zabbo.net> * * I need to thank many people for helping make this driver happen. * As always, Eric Brombaugh was a hacking machine and killed many bugs * that I was too dumb to notice. Howard Kim at ESS provided reference boards * and as much docs as he could. Todd and Mick at Dell tested snapshots on * an army of laptops. msw and deviant at Red Hat also humoured me by hanging * their laptops every few hours in the name of science. * * Shouts go out to Mike "DJ XPCom" Ang. * * History * v1.23 - Jun 5 2002 - Michael Olson <olson@cs.odu.edu> * added a module option to allow selection of GPIO pin number * for external amp * v1.22 - Feb 28 2001 - Zach Brown <zab@zabbo.net> * allocate mem at insmod/setup, rather than open * limit pci dma addresses to 28bit, thanks guys. * v1.21 - Feb 04 2001 - Zach Brown <zab@zabbo.net> * fix up really dumb notifier -> suspend oops * v1.20 - Jan 30 2001 - Zach Brown <zab@zabbo.net> * get rid of pm callback and use pci_dev suspend/resume instead * m3_probe cleanups, including pm oops think-o * v1.10 - Jan 6 2001 - Zach Brown <zab@zabbo.net> * revert to lame remap_page_range mmap() just to make it work * record mmap fixed. * fix up incredibly broken open/release resource management * duh. fix record format setting. * add SMP locking and cleanup formatting here and there * v1.00 - Dec 16 2000 - Zach Brown <zab@zabbo.net> * port to sexy 2.4 interfaces * properly align instance allocations so recording works * clean up function namespace a little :/ * update PCI IDs based on mail from ESS * arbitrarily bump version number to show its 2.4 now, * 2.2 will stay 0., oss_audio port gets 2. * v0.03 - Nov 05 2000 - Zach Brown <zab@zabbo.net> * disable recording but allow dsp to be opened read * pull out most silly compat defines * v0.02 - Nov 04 2000 - Zach Brown <zab@zabbo.net> * changed clocking setup for m3, slowdown fixed. * codec reset is hopefully reliable now * rudimentary apm/power management makes suspend/resume work * v0.01 - Oct 31 2000 - Zach Brown <zab@zabbo.net> * first release * v0.00 - Sep 09 2000 - Zach Brown <zab@zabbo.net> * first pass derivation from maestro.c * * TODO * in/out allocated contiguously so fullduplex mmap will work? * no beep on init (mute) * resetup msrc data memory if freq changes? * * -- * * Allow me to ramble a bit about the m3 architecture. The core of the * chip is the 'assp', the custom ESS dsp that runs the show. It has * a small amount of code and data ram. ESS drops binary dsp code images * on our heads, but we don't get to see specs on the dsp. * * The constant piece of code on the dsp is the 'kernel'. It also has a * chunk of the dsp memory that is statically set aside for its control * info. This is the KDATA defines in maestro3.h. Part of its core * data is a list of code addresses that point to the pieces of DSP code * that it should walk through in its loop. These other pieces of code * do the real work. The kernel presumably jumps into each of them in turn. * These code images tend to have their own data area, and one can have * multiple data areas representing different states for each of the 'client * instance' code portions. There is generally a list in the kernel data * that points to the data instances for a given piece of code. * * We've only been given the binary image for the 'minisrc', mini sample * rate converter. This is rather annoying because it limits the work * we can do on the dsp, but it also greatly simplifies the job of managing * dsp data memory for the code and data for our playing streams :). We * statically allocate the minisrc code into a region we 'know' to be free * based on the map of the binary kernel image we're loading. We also * statically allocate the data areas for the maximum number of pcm streams * we can be dealing with. This max is set by the length of the static list * in the kernel data that records the number of minisrc data regions we * can have. Thats right, all software dsp mixing with static code list * limits. Rock. * * How sound goes in and out is still a relative mystery. It appears * that the dsp has the ability to get input and output through various * 'connections'. To do IO from or to a connection, you put the address * of the minisrc client area in the static kernel data lists for that * input or output. so for pcm -> dsp -> mixer, we put the minisrc data * instance in the DMA list and also in the list for the mixer. I guess * it Just Knows which is in/out, and we give some dma control info that * helps. There are all sorts of cool inputs/outputs that it seems we can't * use without dsp code images that know how to use them. * * So at init time we preload all the memory allocation stuff and set some * system wide parameters. When we really get a sound to play we build * up its minisrc header (stream parameters, buffer addresses, input/output * settings). Then we throw its header on the various lists. We also * tickle some KDATA settings that ask the assp to raise clock interrupts * and do some amount of software mixing before handing data to the ac97. * * Sorry for the vague details. Feel free to ask Eric or myself if you * happen to be trying to use this driver elsewhere. Please accept my * apologies for the quality of the OSS support code, its passed through * too many hands now and desperately wants to be rethought. */ /*****************************************************************************/ #include <linux/config.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/string.h> #include <linux/ctype.h> #include <linux/ioport.h> #include <linux/sched.h> #include <linux/delay.h> #include <linux/sound.h> #include <linux/slab.h> #include <linux/soundcard.h> #include <linux/pci.h> #include <linux/vmalloc.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/poll.h> #include <linux/reboot.h> #include <linux/spinlock.h> #include <linux/ac97_codec.h> #include <linux/wait.h> #include <linux/mutex.h> #include <asm/io.h> #include <asm/dma.h> #include <asm/uaccess.h> #include "maestro3.h" #define M_DEBUG 1 #define DRIVER_VERSION "1.23" #define M3_MODULE_NAME "maestro3" #define PFX M3_MODULE_NAME ": " #define M3_STATE_MAGIC 0x734d724d #define M3_CARD_MAGIC 0x646e6f50 #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 DAC_RUNNING 1 #define ADC_RUNNING 2 #define SND_DEV_DSP16 5 #ifdef M_DEBUG static int debug; #define DPMOD 1 /* per module load */ #define DPSTR 2 /* per 'stream' */ #define DPSYS 3 /* per syscall */ #define DPCRAP 4 /* stuff the user shouldn't see unless they're really debuggin */ #define DPINT 5 /* per interrupt, LOTS */ #define DPRINTK(DP, args...) {if (debug >= (DP)) printk(KERN_DEBUG PFX args);} #else #define DPRINTK(x) #endif struct m3_list { int curlen; u16 mem_addr; int max; }; static int external_amp = 1; static int gpio_pin = -1; struct m3_state { unsigned int magic; struct m3_card *card; unsigned char fmt, enable; int index; /* this locks around the oss state in the driver */ /* no, this lock is removed - only use card->lock */ /* otherwise: against what are you protecting on SMP when irqhandler uses s->lock and m3_assp_read uses card->lock ? */ struct mutex open_mutex; wait_queue_head_t open_wait; mode_t open_mode; int dev_audio; struct assp_instance { u16 code, data; } dac_inst, adc_inst; /* should be in dmabuf */ unsigned int rateadc, ratedac; struct dmabuf { void *rawbuf; unsigned buforder; unsigned numfrag; unsigned fragshift; unsigned hwptr, swptr; unsigned total_bytes; int count; unsigned error; /* over/underrun */ wait_queue_head_t wait; /* redundant, but makes calculations easier */ unsigned fragsize; unsigned dmasize; unsigned fragsamples; /* OSS stuff */ unsigned mapped:1; unsigned ready:1; unsigned endcleared:1; unsigned ossfragshift; int ossmaxfrags; unsigned subdivision; /* new in m3 */ int mixer_index, dma_index, msrc_index, adc1_index; int in_lists; /* 2.4.. */ dma_addr_t handle; } dma_dac, dma_adc; }; struct m3_card { unsigned int magic; struct m3_card *next; struct ac97_codec *ac97; spinlock_t ac97_lock; int card_type; #define NR_DSPS 1 #define MAX_DSPS NR_DSPS struct m3_state channels[MAX_DSPS]; /* this locks around the physical registers on the card */ spinlock_t lock; /* hardware resources */ struct pci_dev *pcidev; u32 iobase; u32 irq; int dacs_active; int timer_users; struct m3_list msrc_list, mixer_list, adc1_list, dma_list; /* for storing reset state..*/ u8 reset_state; u16 *suspend_mem; int in_suspend; wait_queue_head_t suspend_queue; }; /* * an arbitrary volume we set the internal * volume settings to so that the ac97 volume * range is a little less insane. 0x7fff is * max. */ #define ARB_VOLUME ( 0x6800 ) static const unsigned sample_shift[] = { 0, 1, 1, 2 }; enum { ESS_ALLEGRO, ESS_MAESTRO3, /* * a maestro3 with 'hardware strapping', only * found inside ESS? */ ESS_MAESTRO3HW, }; static char *card_names[] = { [ESS_ALLEGRO] = "Allegro", [ESS_MAESTRO3] = "Maestro3(i)", [ESS_MAESTRO3HW] = "Maestro3(i)hw" }; #ifndef PCI_VENDOR_ESS #define PCI_VENDOR_ESS 0x125D #endif #define M3_DEVICE(DEV, TYPE) \ { \ .vendor = PCI_VENDOR_ESS, \ .device = DEV, \ .subvendor = PCI_ANY_ID, \ .subdevice = PCI_ANY_ID, \ .class = PCI_CLASS_MULTIMEDIA_AUDIO << 8, \ .class_mask = 0xffff << 8, \ .driver_data = TYPE, \ } static struct pci_device_id m3_id_table[] = { M3_DEVICE(0x1988, ESS_ALLEGRO), M3_DEVICE(0x1998, ESS_MAESTRO3), M3_DEVICE(0x199a, ESS_MAESTRO3HW), {0,} }; MODULE_DEVICE_TABLE (pci, m3_id_table); /* * reports seem to indicate that the m3 is limited * to 28bit bus addresses. aaaargggh... */ #define M3_PCI_DMA_MASK 0x0fffffff 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 struct m3_card *devs; /* * I'm not very good at laying out functions in a file :) */ static int m3_notifier(struct notifier_block *nb, unsigned long event, void *buf); static int m3_suspend(struct pci_dev *pci_dev, pm_message_t state); static void check_suspend(struct m3_card *card); static struct notifier_block m3_reboot_nb = { .notifier_call = m3_notifier, }; static void m3_outw(struct m3_card *card, u16 value, unsigned long reg) { check_suspend(card); outw(value, card->iobase + reg); } static u16 m3_inw(struct m3_card *card, unsigned long reg) { check_suspend(card); return inw(card->iobase + reg); } static void m3_outb(struct m3_card *card, u8 value, unsigned long reg) { check_suspend(card); outb(value, card->iobase + reg); } static u8 m3_inb(struct m3_card *card, unsigned long reg) { check_suspend(card); return inb(card->iobase + reg); } /* * access 16bit words to the code or data regions of the dsp's memory. * index addresses 16bit words. */ static u16 __m3_assp_read(struct m3_card *card, u16 region, u16 index) { m3_outw(card, region & MEMTYPE_MASK, DSP_PORT_MEMORY_TYPE); m3_outw(card, index, DSP_PORT_MEMORY_INDEX); return m3_inw(card, DSP_PORT_MEMORY_DATA); } static u16 m3_assp_read(struct m3_card *card, u16 region, u16 index) { unsigned long flags; u16 ret; spin_lock_irqsave(&(card->lock), flags); ret = __m3_assp_read(card, region, index); spin_unlock_irqrestore(&(card->lock), flags); return ret; } static void __m3_assp_write(struct m3_card *card, u16 region, u16 index, u16 data) { m3_outw(card, region & MEMTYPE_MASK, DSP_PORT_MEMORY_TYPE); m3_outw(card, index, DSP_PORT_MEMORY_INDEX); m3_outw(card, data, DSP_PORT_MEMORY_DATA); } static void m3_assp_write(struct m3_card *card, u16 region, u16 index, u16 data) { unsigned long flags; spin_lock_irqsave(&(card->lock), flags); __m3_assp_write(card, region, index, data); spin_unlock_irqrestore(&(card->lock), flags); } static void m3_assp_halt(struct m3_card *card) { card->reset_state = m3_inb(card, DSP_PORT_CONTROL_REG_B) & ~REGB_STOP_CLOCK; mdelay(10); m3_outb(card, card->reset_state & ~REGB_ENABLE_RESET, DSP_PORT_CONTROL_REG_B); } static void m3_assp_continue(struct m3_card *card) { m3_outb(card, card->reset_state | REGB_ENABLE_RESET, DSP_PORT_CONTROL_REG_B); } /* * This makes me sad. the maestro3 has lists * internally that must be packed.. 0 terminates, * apparently, or maybe all unused entries have * to be 0, the lists have static lengths set * by the binary code images. */ static int m3_add_list(struct m3_card *card, struct m3_list *list, u16 val) { DPRINTK(DPSTR, "adding val 0x%x to list 0x%p at pos %d\n", val, list, list->curlen); m3_assp_write(card, MEMTYPE_INTERNAL_DATA, list->mem_addr + list->curlen, val); return list->curlen++; } static void m3_remove_list(struct m3_card *card, struct m3_list *list, int index) { u16 val; int lastindex = list->curlen - 1; DPRINTK(DPSTR, "removing ind %d from list 0x%p\n", index, list); if(index != lastindex) { val = m3_assp_read(card, MEMTYPE_INTERNAL_DATA, list->mem_addr + lastindex); m3_assp_write(card, MEMTYPE_INTERNAL_DATA, list->mem_addr + index, val); } m3_assp_write(card, MEMTYPE_INTERNAL_DATA, list->mem_addr + lastindex, 0); list->curlen--; } static void set_fmt(struct m3_state *s, unsigned char mask, unsigned char data) { int tmp; s->fmt = (s->fmt & mask) | data; tmp = (s->fmt >> ESS_DAC_SHIFT) & ESS_FMT_MASK; /* write to 'mono' word */ m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->dac_inst.data + SRC3_DIRECTION_OFFSET + 1, (tmp & ESS_FMT_STEREO) ? 0 : 1); /* write to '8bit' word */ m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->dac_inst.data + SRC3_DIRECTION_OFFSET + 2, (tmp & ESS_FMT_16BIT) ? 0 : 1); tmp = (s->fmt >> ESS_ADC_SHIFT) & ESS_FMT_MASK; /* write to 'mono' word */ m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->adc_inst.data + SRC3_DIRECTION_OFFSET + 1, (tmp & ESS_FMT_STEREO) ? 0 : 1); /* write to '8bit' word */ m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->adc_inst.data + SRC3_DIRECTION_OFFSET + 2, (tmp & ESS_FMT_16BIT) ? 0 : 1); } static void set_dac_rate(struct m3_state *s, unsigned int rate) { u32 freq; if (rate > 48000) rate = 48000; if (rate < 8000) rate = 8000; s->ratedac = rate; freq = ((rate << 15) + 24000 ) / 48000; if(freq) freq--; m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->dac_inst.data + CDATA_FREQUENCY, freq); } static void set_adc_rate(struct m3_state *s, unsigned int rate) { u32 freq; if (rate > 48000) rate = 48000; if (rate < 8000) rate = 8000; s->rateadc = rate; freq = ((rate << 15) + 24000 ) / 48000; if(freq) freq--; m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->adc_inst.data + CDATA_FREQUENCY, freq); } static void inc_timer_users(struct m3_card *card) { unsigned long flags; spin_lock_irqsave(&card->lock, flags); card->timer_users++; DPRINTK(DPSYS, "inc timer users now %d\n", card->timer_users); if(card->timer_users != 1) goto out; __m3_assp_write(card, MEMTYPE_INTERNAL_DATA, KDATA_TIMER_COUNT_RELOAD, 240 ) ; __m3_assp_write(card, MEMTYPE_INTERNAL_DATA, KDATA_TIMER_COUNT_CURRENT, 240 ) ; m3_outw(card, m3_inw(card, HOST_INT_CTRL) | CLKRUN_GEN_ENABLE, HOST_INT_CTRL); out: spin_unlock_irqrestore(&card->lock, flags); } static void dec_timer_users(struct m3_card *card) { unsigned long flags; spin_lock_irqsave(&card->lock, flags); card->timer_users--; DPRINTK(DPSYS, "dec timer users now %d\n", card->timer_users); if(card->timer_users > 0 ) goto out; __m3_assp_write(card, MEMTYPE_INTERNAL_DATA, KDATA_TIMER_COUNT_RELOAD, 0 ) ; __m3_assp_write(card, MEMTYPE_INTERNAL_DATA, KDATA_TIMER_COUNT_CURRENT, 0 ) ; m3_outw(card, m3_inw(card, HOST_INT_CTRL) & ~CLKRUN_GEN_ENABLE, HOST_INT_CTRL); out: spin_unlock_irqrestore(&card->lock, flags); } /* * {start,stop}_{adc,dac} should be called * while holding the 'state' lock and they * will try to grab the 'card' lock.. */ static void stop_adc(struct m3_state *s) { if (! (s->enable & ADC_RUNNING)) return; s->enable &= ~ADC_RUNNING; dec_timer_users(s->card); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->adc_inst.data + CDATA_INSTANCE_READY, 0); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, KDATA_ADC1_REQUEST, 0); } static void stop_dac(struct m3_state *s) { if (! (s->enable & DAC_RUNNING)) return; DPRINTK(DPSYS, "stop_dac()\n"); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->dac_inst.data + CDATA_INSTANCE_READY, 0); s->enable &= ~DAC_RUNNING; s->card->dacs_active--; dec_timer_users(s->card); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, KDATA_MIXER_TASK_NUMBER, s->card->dacs_active ) ; } static void start_dac(struct m3_state *s) { if( (!s->dma_dac.mapped && s->dma_dac.count < 1) || !s->dma_dac.ready || (s->enable & DAC_RUNNING)) return; DPRINTK(DPSYS, "start_dac()\n"); s->enable |= DAC_RUNNING; s->card->dacs_active++; inc_timer_users(s->card); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->dac_inst.data + CDATA_INSTANCE_READY, 1); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, KDATA_MIXER_TASK_NUMBER, s->card->dacs_active ) ; } static void start_adc(struct m3_state *s) { 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) ) return; DPRINTK(DPSYS, "start_adc()\n"); s->enable |= ADC_RUNNING; inc_timer_users(s->card); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, KDATA_ADC1_REQUEST, 1); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->adc_inst.data + CDATA_INSTANCE_READY, 1); } static struct play_vals { u16 addr, val; } pv[] = { {CDATA_LEFT_VOLUME, ARB_VOLUME}, {CDATA_RIGHT_VOLUME, ARB_VOLUME}, {SRC3_DIRECTION_OFFSET, 0} , /* +1, +2 are stereo/16 bit */ {SRC3_DIRECTION_OFFSET + 3, 0x0000}, /* fraction? */ {SRC3_DIRECTION_OFFSET + 4, 0}, /* first l */ {SRC3_DIRECTION_OFFSET + 5, 0}, /* first r */ {SRC3_DIRECTION_OFFSET + 6, 0}, /* second l */ {SRC3_DIRECTION_OFFSET + 7, 0}, /* second r */ {SRC3_DIRECTION_OFFSET + 8, 0}, /* delta l */ {SRC3_DIRECTION_OFFSET + 9, 0}, /* delta r */ {SRC3_DIRECTION_OFFSET + 10, 0x8000}, /* round */ {SRC3_DIRECTION_OFFSET + 11, 0xFF00}, /* higher bute mark */ {SRC3_DIRECTION_OFFSET + 13, 0}, /* temp0 */ {SRC3_DIRECTION_OFFSET + 14, 0}, /* c fraction */ {SRC3_DIRECTION_OFFSET + 15, 0}, /* counter */ {SRC3_DIRECTION_OFFSET + 16, 8}, /* numin */ {SRC3_DIRECTION_OFFSET + 17, 50*2}, /* numout */ {SRC3_DIRECTION_OFFSET + 18, MINISRC_BIQUAD_STAGE - 1}, /* numstage */ {SRC3_DIRECTION_OFFSET + 20, 0}, /* filtertap */ {SRC3_DIRECTION_OFFSET + 21, 0} /* booster */ }; /* the mode passed should be already shifted and masked */ static void m3_play_setup(struct m3_state *s, int mode, u32 rate, void *buffer, int size) { int dsp_in_size = MINISRC_IN_BUFFER_SIZE - (0x20 * 2); int dsp_out_size = MINISRC_OUT_BUFFER_SIZE - (0x20 * 2); int dsp_in_buffer = s->dac_inst.data + (MINISRC_TMP_BUFFER_SIZE / 2); int dsp_out_buffer = dsp_in_buffer + (dsp_in_size / 2) + 1; struct dmabuf *db = &s->dma_dac; int i; DPRINTK(DPSTR, "mode=%d rate=%d buf=%p len=%d.\n", mode, rate, buffer, size); #define LO(x) ((x) & 0xffff) #define HI(x) LO((x) >> 16) /* host dma buffer pointers */ m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->dac_inst.data + CDATA_HOST_SRC_ADDRL, LO(virt_to_bus(buffer))); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->dac_inst.data + CDATA_HOST_SRC_ADDRH, HI(virt_to_bus(buffer))); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->dac_inst.data + CDATA_HOST_SRC_END_PLUS_1L, LO(virt_to_bus(buffer) + size)); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->dac_inst.data + CDATA_HOST_SRC_END_PLUS_1H, HI(virt_to_bus(buffer) + size)); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->dac_inst.data + CDATA_HOST_SRC_CURRENTL, LO(virt_to_bus(buffer))); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->dac_inst.data + CDATA_HOST_SRC_CURRENTH, HI(virt_to_bus(buffer))); #undef LO #undef HI /* dsp buffers */ m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->dac_inst.data + CDATA_IN_BUF_BEGIN, dsp_in_buffer); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->dac_inst.data + CDATA_IN_BUF_END_PLUS_1, dsp_in_buffer + (dsp_in_size / 2)); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->dac_inst.data + CDATA_IN_BUF_HEAD, dsp_in_buffer); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->dac_inst.data + CDATA_IN_BUF_TAIL, dsp_in_buffer); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->dac_inst.data + CDATA_OUT_BUF_BEGIN, dsp_out_buffer); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->dac_inst.data + CDATA_OUT_BUF_END_PLUS_1, dsp_out_buffer + (dsp_out_size / 2)); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->dac_inst.data + CDATA_OUT_BUF_HEAD, dsp_out_buffer); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->dac_inst.data + CDATA_OUT_BUF_TAIL, dsp_out_buffer); /* * some per client initializers */ m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->dac_inst.data + SRC3_DIRECTION_OFFSET + 12, s->dac_inst.data + 40 + 8); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->dac_inst.data + SRC3_DIRECTION_OFFSET + 19, s->dac_inst.code + MINISRC_COEF_LOC); /* enable or disable low pass filter? */ m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->dac_inst.data + SRC3_DIRECTION_OFFSET + 22, s->ratedac > 45000 ? 0xff : 0 ); /* tell it which way dma is going? */ m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->dac_inst.data + CDATA_DMA_CONTROL, DMACONTROL_AUTOREPEAT + DMAC_PAGE3_SELECTOR + DMAC_BLOCKF_SELECTOR); /* * set an armload of static initializers */ for(i = 0 ; i < (sizeof(pv) / sizeof(pv[0])) ; i++) m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->dac_inst.data + pv[i].addr, pv[i].val); /* * put us in the lists if we're not already there */ if(db->in_lists == 0) { db->msrc_index = m3_add_list(s->card, &s->card->msrc_list, s->dac_inst.data >> DP_SHIFT_COUNT); db->dma_index = m3_add_list(s->card, &s->card->dma_list, s->dac_inst.data >> DP_SHIFT_COUNT); db->mixer_index = m3_add_list(s->card, &s->card->mixer_list, s->dac_inst.data >> DP_SHIFT_COUNT); db->in_lists = 1; } set_dac_rate(s,rate); start_dac(s); } /* * Native record driver */ static struct rec_vals { u16 addr, val; } rv[] = { {CDATA_LEFT_VOLUME, ARB_VOLUME}, {CDATA_RIGHT_VOLUME, ARB_VOLUME}, {SRC3_DIRECTION_OFFSET, 1} , /* +1, +2 are stereo/16 bit */ {SRC3_DIRECTION_OFFSET + 3, 0x0000}, /* fraction? */ {SRC3_DIRECTION_OFFSET + 4, 0}, /* first l */ {SRC3_DIRECTION_OFFSET + 5, 0}, /* first r */ {SRC3_DIRECTION_OFFSET + 6, 0}, /* second l */ {SRC3_DIRECTION_OFFSET + 7, 0}, /* second r */ {SRC3_DIRECTION_OFFSET + 8, 0}, /* delta l */ {SRC3_DIRECTION_OFFSET + 9, 0}, /* delta r */ {SRC3_DIRECTION_OFFSET + 10, 0x8000}, /* round */ {SRC3_DIRECTION_OFFSET + 11, 0xFF00}, /* higher bute mark */ {SRC3_DIRECTION_OFFSET + 13, 0}, /* temp0 */ {SRC3_DIRECTION_OFFSET + 14, 0}, /* c fraction */ {SRC3_DIRECTION_OFFSET + 15, 0}, /* counter */ {SRC3_DIRECTION_OFFSET + 16, 50},/* numin */ {SRC3_DIRECTION_OFFSET + 17, 8}, /* numout */ {SRC3_DIRECTION_OFFSET + 18, 0}, /* numstage */ {SRC3_DIRECTION_OFFSET + 19, 0}, /* coef */ {SRC3_DIRECTION_OFFSET + 20, 0}, /* filtertap */ {SRC3_DIRECTION_OFFSET + 21, 0}, /* booster */ {SRC3_DIRECTION_OFFSET + 22, 0xff} /* skip lpf */ }; /* again, passed mode is alrady shifted/masked */ static void m3_rec_setup(struct m3_state *s, int mode, u32 rate, void *buffer, int size) { int dsp_in_size = MINISRC_IN_BUFFER_SIZE + (0x10 * 2); int dsp_out_size = MINISRC_OUT_BUFFER_SIZE - (0x10 * 2); int dsp_in_buffer = s->adc_inst.data + (MINISRC_TMP_BUFFER_SIZE / 2); int dsp_out_buffer = dsp_in_buffer + (dsp_in_size / 2) + 1; struct dmabuf *db = &s->dma_adc; int i; DPRINTK(DPSTR, "rec_setup mode=%d rate=%d buf=%p len=%d.\n", mode, rate, buffer, size); #define LO(x) ((x) & 0xffff) #define HI(x) LO((x) >> 16) /* host dma buffer pointers */ m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->adc_inst.data + CDATA_HOST_SRC_ADDRL, LO(virt_to_bus(buffer))); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->adc_inst.data + CDATA_HOST_SRC_ADDRH, HI(virt_to_bus(buffer))); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->adc_inst.data + CDATA_HOST_SRC_END_PLUS_1L, LO(virt_to_bus(buffer) + size)); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->adc_inst.data + CDATA_HOST_SRC_END_PLUS_1H, HI(virt_to_bus(buffer) + size)); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->adc_inst.data + CDATA_HOST_SRC_CURRENTL, LO(virt_to_bus(buffer))); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->adc_inst.data + CDATA_HOST_SRC_CURRENTH, HI(virt_to_bus(buffer))); #undef LO #undef HI /* dsp buffers */ m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->adc_inst.data + CDATA_IN_BUF_BEGIN, dsp_in_buffer); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->adc_inst.data + CDATA_IN_BUF_END_PLUS_1, dsp_in_buffer + (dsp_in_size / 2)); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->adc_inst.data + CDATA_IN_BUF_HEAD, dsp_in_buffer); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->adc_inst.data + CDATA_IN_BUF_TAIL, dsp_in_buffer); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->adc_inst.data + CDATA_OUT_BUF_BEGIN, dsp_out_buffer); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->adc_inst.data + CDATA_OUT_BUF_END_PLUS_1, dsp_out_buffer + (dsp_out_size / 2)); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->adc_inst.data + CDATA_OUT_BUF_HEAD, dsp_out_buffer); m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->adc_inst.data + CDATA_OUT_BUF_TAIL, dsp_out_buffer); /* * some per client initializers */ m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->adc_inst.data + SRC3_DIRECTION_OFFSET + 12, s->adc_inst.data + 40 + 8); /* tell it which way dma is going? */ m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->adc_inst.data + CDATA_DMA_CONTROL, DMACONTROL_DIRECTION + DMACONTROL_AUTOREPEAT + DMAC_PAGE3_SELECTOR + DMAC_BLOCKF_SELECTOR); /* * set an armload of static initializers */ for(i = 0 ; i < (sizeof(rv) / sizeof(rv[0])) ; i++) m3_assp_write(s->card, MEMTYPE_INTERNAL_DATA, s->adc_inst.data + rv[i].addr, rv[i].val); /* * put us in the lists if we're not already there */ if(db->in_lists == 0) { db->adc1_index = m3_add_list(s->card, &s->card->adc1_list, s->adc_inst.data >> DP_SHIFT_COUNT); db->dma_index = m3_add_list(s->card, &s->card->dma_list, s->adc_inst.data >> DP_SHIFT_COUNT); db->msrc_index = m3_add_list(s->card, &s->card->msrc_list, s->adc_inst.data >> DP_SHIFT_COUNT); db->in_lists = 1; } set_adc_rate(s,rate); start_adc(s); } /* --------------------------------------------------------------------- */ static void set_dmaa(struct m3_state *s, unsigned int addr, unsigned int count) { DPRINTK(DPINT,"set_dmaa??\n"); } static void set_dmac(struct m3_state *s, unsigned int addr, unsigned int count) { DPRINTK(DPINT,"set_dmac??\n"); } static u32 get_dma_pos(struct m3_card *card, int instance_addr) { u16 hi = 0, lo = 0; int retry = 10; /* * try and get a valid answer */ while(retry--) { hi = m3_assp_read(card, MEMTYPE_INTERNAL_DATA, instance_addr + CDATA_HOST_SRC_CURRENTH); lo = m3_assp_read(card, MEMTYPE_INTERNAL_DATA, instance_addr + CDATA_HOST_SRC_CURRENTL); if(hi == m3_assp_read(card, MEMTYPE_INTERNAL_DATA, instance_addr + CDATA_HOST_SRC_CURRENTH)) break; } return lo | (hi<<16); } static u32 get_dmaa(struct m3_state *s) { u32 offset; offset = get_dma_pos(s->card, s->dac_inst.data) - virt_to_bus(s->dma_dac.rawbuf); DPRINTK(DPINT,"get_dmaa: 0x%08x\n",offset); return offset; } static u32 get_dmac(struct m3_state *s) { u32 offset; offset = get_dma_pos(s->card, s->adc_inst.data) - virt_to_bus(s->dma_adc.rawbuf); DPRINTK(DPINT,"get_dmac: 0x%08x\n",offset); return offset; } static int prog_dmabuf(struct m3_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->card->lock, flags); fmt = s->fmt; if (rec) { stop_adc(s); fmt >>= ESS_ADC_SHIFT; } else { stop_dac(s); fmt >>= ESS_DAC_SHIFT; } fmt &= ESS_FMT_MASK; db->hwptr = db->swptr = db->total_bytes = db->count = db->error = db->endcleared = 0; 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; DPRINTK(DPSTR,"prog_dmabuf: numfrag: %d fragsize: %d dmasize: %d\n",db->numfrag,db->fragsize,db->dmasize); memset(db->rawbuf, (fmt & ESS_FMT_16BIT) ? 0 : 0x80, db->dmasize); if (rec) m3_rec_setup(s, fmt, s->rateadc, db->rawbuf, db->dmasize); else m3_play_setup(s, fmt, s->ratedac, db->rawbuf, db->dmasize); db->ready = 1; spin_unlock_irqrestore(&s->card->lock, flags); return 0; } static void clear_advance(struct m3_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 m3_update_ptr(struct m3_state *s) { unsigned hwptr; int diff; /* update ADC pointer */ if (s->dma_adc.ready) { 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))) { 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; diff = (s->dma_dac.dmasize + hwptr - s->dma_dac.hwptr) % s->dma_dac.dmasize; DPRINTK(DPINT,"updating dac: hwptr: %6d diff: %6d count: %6d\n", hwptr,diff,s->dma_dac.count); 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; if (s->dma_dac.count <= 0) { DPRINTK(DPCRAP,"underflow! diff: %d (0x%x) count: %d (0x%x) hw: %d (0x%x) sw: %d (0x%x)\n", diff, diff, s->dma_dac.count, s->dma_dac.count, hwptr, hwptr, s->dma_dac.swptr, s->dma_dac.swptr); 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); DPRINTK(DPINT,"waking up DAC count: %d sw: %d hw: %d\n", s->dma_dac.count, s->dma_dac.swptr, hwptr); } } } } static irqreturn_t m3_interrupt(int irq, void *dev_id, struct pt_regs *regs) { struct m3_card *c = (struct m3_card *)dev_id; struct m3_state *s = &c->channels[0]; u8 status; status = inb(c->iobase+0x1A); if(status == 0xff) return IRQ_NONE; /* presumably acking the ints? */ outw(status, c->iobase+0x1A); if(c->in_suspend) return IRQ_HANDLED; /* * ack an assp int if its running * and has an int pending */ if( status & ASSP_INT_PENDING) { u8 ctl = inb(c->iobase + ASSP_CONTROL_B); if( !(ctl & STOP_ASSP_CLOCK)) { ctl = inb(c->iobase + ASSP_HOST_INT_STATUS ); if(ctl & DSP2HOST_REQ_TIMER) { outb( DSP2HOST_REQ_TIMER, c->iobase + ASSP_HOST_INT_STATUS); /* update adc/dac info if it was a timer int */ spin_lock(&c->lock); m3_update_ptr(s); spin_unlock(&c->lock); } } } /* XXX is this needed? */ if(status & 0x40) outb(0x40, c->iobase+0x1A); return IRQ_HANDLED; } /* --------------------------------------------------------------------- */ static const char invalid_magic[] = KERN_CRIT PFX "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,M3_STATE_MAGIC) #define VALIDATE_CARD(a) VALIDATE_MAGIC(a,M3_CARD_MAGIC) /* --------------------------------------------------------------------- */ static int drain_dac(struct m3_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; set_current_state(TASK_INTERRUPTIBLE); add_wait_queue(&s->dma_dac.wait, &wait); for (;;) { spin_lock_irqsave(&s->card->lock, flags); count = s->dma_dac.count; spin_unlock_irqrestore(&s->card->lock, flags); if (count <= 0) break; if (signal_pending(current)) break; if (nonblock) { remove_wait_queue(&s->dma_dac.wait, &wait); set_current_state(TASK_RUNNING); return -EBUSY; } tmo = (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) DPRINTK(DPCRAP,"dma timed out?? %ld\n",jiffies); } remove_wait_queue(&s->dma_dac.wait, &wait); set_current_state(TASK_RUNNING); if (signal_pending(current)) return -ERESTARTSYS; return 0; } static ssize_t m3_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos) { struct m3_state *s = (struct m3_state *)file->private_data; ssize_t ret; unsigned long flags; unsigned swptr; int cnt; VALIDATE_STATE(s); if (s->dma_adc.mapped) return -ENXIO; if (!s->dma_adc.ready && (ret = prog_dmabuf(s, 1))) return ret; if (!access_ok(VERIFY_WRITE, buffer, count)) return -EFAULT; ret = 0; spin_lock_irqsave(&s->card->lock, flags); while (count > 0) { int timed_out; swptr = s->dma_adc.swptr; cnt = s->dma_adc.dmasize-swptr; if (s->dma_adc.count < cnt) cnt = s->dma_adc.count; if (cnt > count) cnt = count; if (cnt <= 0) { start_adc(s); if (file->f_flags & O_NONBLOCK) { ret = ret ? ret : -EAGAIN; goto out; } spin_unlock_irqrestore(&s->card->lock, flags); timed_out = interruptible_sleep_on_timeout(&s->dma_adc.wait, HZ) == 0; spin_lock_irqsave(&s->card->lock, flags); if(timed_out) { printk("read: chip lockup? dmasz %u fragsz %u count %u 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); set_dmac(s, virt_to_bus(s->dma_adc.rawbuf), s->dma_adc.numfrag << s->dma_adc.fragshift); s->dma_adc.count = s->dma_adc.hwptr = s->dma_adc.swptr = 0; } if (signal_pending(current)) { ret = ret ? ret : -ERESTARTSYS; goto out; } continue; } spin_unlock_irqrestore(&s->card->lock, flags); if (copy_to_user(buffer, s->dma_adc.rawbuf + swptr, cnt)) { ret = ret ? ret : -EFAULT; return ret; } spin_lock_irqsave(&s->card->lock, flags); swptr = (swptr + cnt) % s->dma_adc.dmasize; s->dma_adc.swptr = swptr; s->dma_adc.count -= cnt; count -= cnt; buffer += cnt; ret += cnt; start_adc(s); } out: spin_unlock_irqrestore(&s->card->lock, flags); return ret; } static ssize_t m3_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos) { struct m3_state *s = (struct m3_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; spin_lock_irqsave(&s->card->lock, flags); while (count > 0) { int timed_out; 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; if (cnt > count) cnt = count; if (cnt <= 0) { start_dac(s); if (file->f_flags & O_NONBLOCK) { if(!ret) ret = -EAGAIN; goto out; } spin_unlock_irqrestore(&s->card->lock, flags); timed_out = interruptible_sleep_on_timeout(&s->dma_dac.wait, HZ) == 0; spin_lock_irqsave(&s->card->lock, flags); if(timed_out) { DPRINTK(DPCRAP,"write: chip lockup? dmasz %u fragsz %u count %u 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); set_dmaa(s, virt_to_bus(s->dma_dac.rawbuf), s->dma_dac.numfrag << s->dma_dac.fragshift); s->dma_dac.count = s->dma_dac.hwptr = s->dma_dac.swptr = 0; } if (signal_pending(current)) { if (!ret) ret = -ERESTARTSYS; goto out; } continue; } spin_unlock_irqrestore(&s->card->lock, flags); if (copy_from_user(s->dma_dac.rawbuf + swptr, buffer, cnt)) { if (!ret) ret = -EFAULT; return ret; } spin_lock_irqsave(&s->card->lock, flags); DPRINTK(DPSYS,"wrote %6d bytes at sw: %6d cnt: %6d while hw: %6d\n", cnt, swptr, s->dma_dac.count, s->dma_dac.hwptr); swptr = (swptr + cnt) % s->dma_dac.dmasize; s->dma_dac.swptr = swptr; s->dma_dac.count += cnt; s->dma_dac.endcleared = 0; count -= cnt; buffer += cnt; ret += cnt; start_dac(s); } out: spin_unlock_irqrestore(&s->card->lock, flags); return ret; } static unsigned int m3_poll(struct file *file, struct poll_table_struct *wait) { struct m3_state *s = (struct m3_state *)file->private_data; unsigned long flags; unsigned int mask = 0; VALIDATE_STATE(s); 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->card->lock, flags); m3_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->card->lock, flags); return mask; } static int m3_mmap(struct file *file, struct vm_area_struct *vma) { struct m3_state *s = (struct m3_state *)file->private_data; unsigned long max_size, size, start, offset; struct dmabuf *db; int ret = -EINVAL; VALIDATE_STATE(s); if (vma->vm_flags & VM_WRITE) { if ((ret = prog_dmabuf(s, 0)) != 0) return ret; db = &s->dma_dac; } else if (vma->vm_flags & VM_READ) { if ((ret = prog_dmabuf(s, 1)) != 0) return ret; db = &s->dma_adc; } else return -EINVAL; max_size = db->dmasize; start = vma->vm_start; offset = (vma->vm_pgoff << PAGE_SHIFT); size = vma->vm_end - vma->vm_start; if(size > max_size) goto out; if(offset > max_size - size) goto out; /* * this will be ->nopage() once I can * ask Jeff what the hell I'm doing wrong. */ 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: return ret; } /* * this function is a disaster.. */ #define get_user_ret(x, ptr, ret) ({ if(get_user(x, ptr)) return ret; }) static int m3_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) { struct m3_state *s = (struct m3_state *)file->private_data; struct m3_card *card=s->card; 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; VALIDATE_STATE(s); mapped = ((file->f_mode & FMODE_WRITE) && s->dma_dac.mapped) || ((file->f_mode & FMODE_READ) && s->dma_adc.mapped); DPRINTK(DPSYS,"m3_ioctl: cmd %d\n", cmd); 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: spin_lock_irqsave(&card->lock, flags); 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; } spin_unlock_irqrestore(&card->lock, flags); return 0; case SNDCTL_DSP_SPEED: get_user_ret(val, p, -EFAULT); spin_lock_irqsave(&card->lock, flags); 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); } } spin_unlock_irqrestore(&card->lock, flags); return put_user((file->f_mode & FMODE_READ) ? s->rateadc : s->ratedac, p); case SNDCTL_DSP_STEREO: get_user_ret(val, p, -EFAULT); spin_lock_irqsave(&card->lock, flags); 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); spin_unlock_irqrestore(&card->lock, flags); return 0; case SNDCTL_DSP_CHANNELS: get_user_ret(val, p, -EFAULT); spin_lock_irqsave(&card->lock, flags); 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); } spin_unlock_irqrestore(&card->lock, flags); 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*/ get_user_ret(val, p, -EFAULT); spin_lock_irqsave(&card->lock, flags); if (val != AFMT_QUERY) { fmtd = 0; fmtm = ~0; if (file->f_mode & FMODE_READ) { stop_adc(s); s->dma_adc.ready = 0; if (val == AFMT_S16_LE) fmtd |= ESS_FMT_16BIT << ESS_ADC_SHIFT; else fmtm &= ~(ESS_FMT_16BIT << ESS_ADC_SHIFT); } 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); } spin_unlock_irqrestore(&card->lock, flags); 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: get_user_ret(val, p, -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->enable & DAC_RUNNING) && (val = prog_dmabuf(s, 0)) != 0) return val; spin_lock_irqsave(&card->lock, flags); m3_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(&card->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->enable & ADC_RUNNING) && (val = prog_dmabuf(s, 1)) != 0) return val; spin_lock_irqsave(&card->lock, flags); m3_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(&card->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; spin_lock_irqsave(&card->lock, flags); m3_update_ptr(s); val = s->dma_dac.count; spin_unlock_irqrestore(&card->lock, flags); return put_user(val, p); case SNDCTL_DSP_GETIPTR: if (!(file->f_mode & FMODE_READ)) return -EINVAL; spin_lock_irqsave(&card->lock, flags); m3_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(&card->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; spin_lock_irqsave(&card->lock, flags); m3_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(&card->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: get_user_ret(val, p, -EFAULT); spin_lock_irqsave(&card->lock, flags); 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; } spin_unlock_irqrestore(&card->lock, flags); 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; get_user_ret(val, p, -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 int allocate_dmabuf(struct pci_dev *pci_dev, struct dmabuf *db) { int order; DPRINTK(DPSTR,"allocating for dmabuf %p\n", db); /* * alloc as big a chunk as we can, start with * 64k 'cause we're insane. based on order cause * the amazingly complicated prog_dmabuf wants it. * * pci_alloc_sonsistent guarantees that it won't cross a natural * boundary; the m3 hardware can't have dma cross a 64k bus * address boundary. */ for (order = 16-PAGE_SHIFT; order >= 1; order--) { db->rawbuf = pci_alloc_consistent(pci_dev, PAGE_SIZE << order, &(db->handle)); if(db->rawbuf) break; } if (!db->rawbuf) return 1; DPRINTK(DPSTR,"allocated %ld (%d) bytes at %p\n", PAGE_SIZE<<order, order, db->rawbuf); { struct page *page, *pend; pend = virt_to_page(db->rawbuf + (PAGE_SIZE << order) - 1); for (page = virt_to_page(db->rawbuf); page <= pend; page++) SetPageReserved(page); } db->buforder = order; db->ready = 0; db->mapped = 0; return 0; } static void nuke_lists(struct m3_card *card, struct dmabuf *db) { m3_remove_list(card, &(card->dma_list), db->dma_index); m3_remove_list(card, &(card->msrc_list), db->msrc_index); db->in_lists = 0; } static void free_dmabuf(struct pci_dev *pci_dev, struct dmabuf *db) { if(db->rawbuf == NULL) return; DPRINTK(DPSTR,"freeing %p from dmabuf %p\n",db->rawbuf, db); { struct page *page, *pend; pend = virt_to_page(db->rawbuf + (PAGE_SIZE << db->buforder) - 1); for (page = virt_to_page(db->rawbuf); page <= pend; page++) ClearPageReserved(page); } pci_free_consistent(pci_dev, PAGE_SIZE << db->buforder, db->rawbuf, db->handle); db->rawbuf = NULL; db->buforder = 0; db->mapped = 0; db->ready = 0; } static int m3_open(struct inode *inode, struct file *file) { unsigned int minor = iminor(inode); struct m3_card *c; struct m3_state *s = NULL; int i; unsigned char fmtm = ~0, fmts = 0; unsigned long flags; /* * Scan the cards and find the channel. We only * do this at open time so it is ok */ for(c = devs ; c != NULL ; c = c->next) { for(i=0;i<NR_DSPS;i++) { if(c->channels[i].dev_audio < 0) continue; if((c->channels[i].dev_audio ^ minor) & ~0xf) continue; s = &c->channels[i]; break; } } if (!s) return -ENODEV; VALIDATE_STATE(s); file->private_data = s; /* wait for device to become free */ mutex_lock(&s->open_mutex); while (s->open_mode & file->f_mode) { if (file->f_flags & O_NONBLOCK) { mutex_unlock(&s->open_mutex); return -EWOULDBLOCK; } mutex_unlock(&s->open_mutex); interruptible_sleep_on(&s->open_wait); if (signal_pending(current)) return -ERESTARTSYS; mutex_lock(&s->open_mutex); } spin_lock_irqsave(&c->lock, flags); 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; 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); mutex_unlock(&s->open_mutex); spin_unlock_irqrestore(&c->lock, flags); return nonseekable_open(inode, file); } static int m3_release(struct inode *inode, struct file *file) { struct m3_state *s = (struct m3_state *)file->private_data; struct m3_card *card=s->card; unsigned long flags; VALIDATE_STATE(s); if (file->f_mode & FMODE_WRITE) drain_dac(s, file->f_flags & O_NONBLOCK); mutex_lock(&s->open_mutex); spin_lock_irqsave(&card->lock, flags); if (file->f_mode & FMODE_WRITE) { stop_dac(s); if(s->dma_dac.in_lists) { m3_remove_list(s->card, &(s->card->mixer_list), s->dma_dac.mixer_index); nuke_lists(s->card, &(s->dma_dac)); } } if (file->f_mode & FMODE_READ) { stop_adc(s); if(s->dma_adc.in_lists) { m3_remove_list(s->card, &(s->card->adc1_list), s->dma_adc.adc1_index); nuke_lists(s->card, &(s->dma_adc)); } } s->open_mode &= (~file->f_mode) & (FMODE_READ|FMODE_WRITE); spin_unlock_irqrestore(&card->lock, flags); mutex_unlock(&s->open_mutex); wake_up(&s->open_wait); return 0; } /* * Wait for the ac97 serial bus to be free. * return nonzero if the bus is still busy. */ static int m3_ac97_wait(struct m3_card *card) { int i = 10000; while( (m3_inb(card, 0x30) & 1) && i--) ; return i == 0; } static u16 m3_ac97_read(struct ac97_codec *codec, u8 reg) { u16 ret = 0; struct m3_card *card = codec->private_data; spin_lock(&card->ac97_lock); if(m3_ac97_wait(card)) { printk(KERN_ERR PFX "serial bus busy reading reg 0x%x\n",reg); goto out; } m3_outb(card, 0x80 | (reg & 0x7f), 0x30); if(m3_ac97_wait(card)) { printk(KERN_ERR PFX "serial bus busy finishing read reg 0x%x\n",reg); goto out; } ret = m3_inw(card, 0x32); DPRINTK(DPCRAP,"reading 0x%04x from 0x%02x\n",ret, reg); out: spin_unlock(&card->ac97_lock); return ret; } static void m3_ac97_write(struct ac97_codec *codec, u8 reg, u16 val) { struct m3_card *card = codec->private_data; spin_lock(&card->ac97_lock); if(m3_ac97_wait(card)) { printk(KERN_ERR PFX "serial bus busy writing 0x%x to 0x%x\n",val, reg); goto out; } DPRINTK(DPCRAP,"writing 0x%04x to 0x%02x\n", val, reg); m3_outw(card, val, 0x32); m3_outb(card, reg & 0x7f, 0x30); out: spin_unlock(&card->ac97_lock); } /* OSS /dev/mixer file operation methods */ static int m3_open_mixdev(struct inode *inode, struct file *file) { unsigned int minor = iminor(inode); struct m3_card *card = devs; for (card = devs; card != NULL; card = card->next) { if((card->ac97 != NULL) && (card->ac97->dev_mixer == minor)) break; } if (!card) { return -ENODEV; } file->private_data = card->ac97; return nonseekable_open(inode, file); } static int m3_release_mixdev(struct inode *inode, struct file *file) { return 0; } static int m3_ioctl_mixdev(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) { struct ac97_codec *codec = (struct ac97_codec *)file->private_data; return codec->mixer_ioctl(codec, cmd, arg); } static struct file_operations m3_mixer_fops = { .owner = THIS_MODULE, .llseek = no_llseek, .ioctl = m3_ioctl_mixdev, .open = m3_open_mixdev, .release = m3_release_mixdev, }; static void remote_codec_config(int io, int isremote) { isremote = isremote ? 1 : 0; outw( (inw(io + RING_BUS_CTRL_B) & ~SECOND_CODEC_ID_MASK) | isremote, io + RING_BUS_CTRL_B); outw( (inw(io + SDO_OUT_DEST_CTRL) & ~COMMAND_ADDR_OUT) | isremote, io + SDO_OUT_DEST_CTRL); outw( (inw(io + SDO_IN_DEST_CTRL) & ~STATUS_ADDR_IN) | isremote, io + SDO_IN_DEST_CTRL); } /* * hack, returns non zero on err */ static int try_read_vendor(struct m3_card *card) { u16 ret; if(m3_ac97_wait(card)) return 1; m3_outb(card, 0x80 | (AC97_VENDOR_ID1 & 0x7f), 0x30); if(m3_ac97_wait(card)) return 1; ret = m3_inw(card, 0x32); return (ret == 0) || (ret == 0xffff); } static void m3_codec_reset(struct m3_card *card, int busywait) { u16 dir; int delay1 = 0, delay2 = 0, i; int io = card->iobase; switch (card->card_type) { /* * the onboard codec on the allegro seems * to want to wait a very long time before * coming back to life */ case ESS_ALLEGRO: delay1 = 50; delay2 = 800; break; case ESS_MAESTRO3: case ESS_MAESTRO3HW: delay1 = 20; delay2 = 500; break; } for(i = 0; i < 5; i ++) { dir = inw(io + GPIO_DIRECTION); dir |= 0x10; /* assuming pci bus master? */ remote_codec_config(io, 0); outw(IO_SRAM_ENABLE, io + RING_BUS_CTRL_A); udelay(20); outw(dir & ~GPO_PRIMARY_AC97 , io + GPIO_DIRECTION); outw(~GPO_PRIMARY_AC97 , io + GPIO_MASK); outw(0, io + GPIO_DATA); outw(dir | GPO_PRIMARY_AC97, io + GPIO_DIRECTION); if(busywait) { mdelay(delay1); } else { set_current_state(TASK_UNINTERRUPTIBLE); schedule_timeout((delay1 * HZ) / 1000); } outw(GPO_PRIMARY_AC97, io + GPIO_DATA); udelay(5); /* ok, bring back the ac-link */ outw(IO_SRAM_ENABLE | SERIAL_AC_LINK_ENABLE, io + RING_BUS_CTRL_A); outw(~0, io + GPIO_MASK); if(busywait) { mdelay(delay2); } else { set_current_state(TASK_UNINTERRUPTIBLE); schedule_timeout((delay2 * HZ) / 1000); } if(! try_read_vendor(card)) break; delay1 += 10; delay2 += 100; DPRINTK(DPMOD, "retrying codec reset with delays of %d and %d ms\n", delay1, delay2); } #if 0 /* more gung-ho reset that doesn't * seem to work anywhere :) */ tmp = inw(io + RING_BUS_CTRL_A); outw(RAC_SDFS_ENABLE|LAC_SDFS_ENABLE, io + RING_BUS_CTRL_A); mdelay(20); outw(tmp, io + RING_BUS_CTRL_A); mdelay(50); #endif } static int __devinit m3_codec_install(struct m3_card *card) { struct ac97_codec *codec; if ((codec = ac97_alloc_codec()) == NULL) return -ENOMEM; codec->private_data = card; codec->codec_read = m3_ac97_read; codec->codec_write = m3_ac97_write; /* someday we should support secondary codecs.. */ codec->id = 0; if (ac97_probe_codec(codec) == 0) { printk(KERN_ERR PFX "codec probe failed\n"); ac97_release_codec(codec); return -1; } if ((codec->dev_mixer = register_sound_mixer(&m3_mixer_fops, -1)) < 0) { printk(KERN_ERR PFX "couldn't register mixer!\n"); ac97_release_codec(codec); return -1; } card->ac97 = codec; return 0; } #define MINISRC_LPF_LEN 10 static u16 minisrc_lpf[MINISRC_LPF_LEN] = { 0X0743, 0X1104, 0X0A4C, 0XF88D, 0X242C, 0X1023, 0X1AA9, 0X0B60, 0XEFDD, 0X186F }; static void m3_assp_init(struct m3_card *card) { int i; /* zero kernel data */ for(i = 0 ; i < (REV_B_DATA_MEMORY_UNIT_LENGTH * NUM_UNITS_KERNEL_DATA) / 2; i++) m3_assp_write(card, MEMTYPE_INTERNAL_DATA, KDATA_BASE_ADDR + i, 0); /* zero mixer data? */ for(i = 0 ; i < (REV_B_DATA_MEMORY_UNIT_LENGTH * NUM_UNITS_KERNEL_DATA) / 2; i++) m3_assp_write(card, MEMTYPE_INTERNAL_DATA, KDATA_BASE_ADDR2 + i, 0); /* init dma pointer */ m3_assp_write(card, MEMTYPE_INTERNAL_DATA, KDATA_CURRENT_DMA, KDATA_DMA_XFER0); /* write kernel into code memory.. */ for(i = 0 ; i < sizeof(assp_kernel_image) / 2; i++) { m3_assp_write(card, MEMTYPE_INTERNAL_CODE, REV_B_CODE_MEMORY_BEGIN + i, assp_kernel_image[i]); } /* * We only have this one client and we know that 0x400 * is free in our kernel's mem map, so lets just * drop it there. It seems that the minisrc doesn't * need vectors, so we won't bother with them.. */ for(i = 0 ; i < sizeof(assp_minisrc_image) / 2; i++) { m3_assp_write(card, MEMTYPE_INTERNAL_CODE, 0x400 + i, assp_minisrc_image[i]); } /* * write the coefficients for the low pass filter? */ for(i = 0; i < MINISRC_LPF_LEN ; i++) { m3_assp_write(card, MEMTYPE_INTERNAL_CODE, 0x400 + MINISRC_COEF_LOC + i, minisrc_lpf[i]); } m3_assp_write(card, MEMTYPE_INTERNAL_CODE, 0x400 + MINISRC_COEF_LOC + MINISRC_LPF_LEN, 0x8000); /* * the minisrc is the only thing on * our task list.. */ m3_assp_write(card, MEMTYPE_INTERNAL_DATA, KDATA_TASK0, 0x400); /* * init the mixer number.. */ m3_assp_write(card, MEMTYPE_INTERNAL_DATA, KDATA_MIXER_TASK_NUMBER,0); /* * EXTREME KERNEL MASTER VOLUME */ m3_assp_write(card, MEMTYPE_INTERNAL_DATA, KDATA_DAC_LEFT_VOLUME, ARB_VOLUME); m3_assp_write(card, MEMTYPE_INTERNAL_DATA, KDATA_DAC_RIGHT_VOLUME, ARB_VOLUME); card->mixer_list.mem_addr = KDATA_MIXER_XFER0; card->mixer_list.max = MAX_VIRTUAL_MIXER_CHANNELS; card->adc1_list.mem_addr = KDATA_ADC1_XFER0; card->adc1_list.max = MAX_VIRTUAL_ADC1_CHANNELS; card->dma_list.mem_addr = KDATA_DMA_XFER0; card->dma_list.max = MAX_VIRTUAL_DMA_CHANNELS; card->msrc_list.mem_addr = KDATA_INSTANCE0_MINISRC; card->msrc_list.max = MAX_INSTANCE_MINISRC; } static int setup_msrc(struct m3_card *card, struct assp_instance *inst, int index) { int data_bytes = 2 * ( MINISRC_TMP_BUFFER_SIZE / 2 + MINISRC_IN_BUFFER_SIZE / 2 + 1 + MINISRC_OUT_BUFFER_SIZE / 2 + 1 ); int address, i; /* * the revb memory map has 0x1100 through 0x1c00 * free. */ /* * align instance address to 256 bytes so that it's * shifted list address is aligned. * list address = (mem address >> 1) >> 7; */ data_bytes = (data_bytes + 255) & ~255; address = 0x1100 + ((data_bytes/2) * index); if((address + (data_bytes/2)) >= 0x1c00) { printk(KERN_ERR PFX "no memory for %d bytes at ind %d (addr 0x%x)\n", data_bytes, index, address); return -1; } for(i = 0; i < data_bytes/2 ; i++) m3_assp_write(card, MEMTYPE_INTERNAL_DATA, address + i, 0); inst->code = 0x400; inst->data = address; return 0; } static int m3_assp_client_init(struct m3_state *s) { setup_msrc(s->card, &(s->dac_inst), s->index * 2); setup_msrc(s->card, &(s->adc_inst), (s->index * 2) + 1); return 0; } static void m3_amp_enable(struct m3_card *card, int enable) { /* * this works for the reference board, have to find * out about others * * this needs more magic for 4 speaker, but.. */ int io = card->iobase; u16 gpo, polarity_port, polarity; if(!external_amp) return; if (gpio_pin >= 0 && gpio_pin <= 15) { polarity_port = 0x1000 + (0x100 * gpio_pin); } else { switch (card->card_type) { case ESS_ALLEGRO: polarity_port = 0x1800; break; default: polarity_port = 0x1100; /* Panasonic toughbook CF72 has to be different... */ if(card->pcidev->subsystem_vendor == 0x10F7 && card->pcidev->subsystem_device == 0x833D) polarity_port = 0x1D00; break; } } gpo = (polarity_port >> 8) & 0x0F; polarity = polarity_port >> 12; if ( enable ) polarity = !polarity; polarity = polarity << gpo; gpo = 1 << gpo; outw(~gpo , io + GPIO_MASK); outw( inw(io + GPIO_DIRECTION) | gpo , io + GPIO_DIRECTION); outw( (GPO_SECONDARY_AC97 | GPO_PRIMARY_AC97 | polarity) , io + GPIO_DATA); outw(0xffff , io + GPIO_MASK); } static int maestro_config(struct m3_card *card) { struct pci_dev *pcidev = card->pcidev; u32 n; u8 t; /* makes as much sense as 'n', no? */ pci_read_config_dword(pcidev, PCI_ALLEGRO_CONFIG, &n); n &= REDUCED_DEBOUNCE; n |= PM_CTRL_ENABLE | CLK_DIV_BY_49 | USE_PCI_TIMING; pci_write_config_dword(pcidev, PCI_ALLEGRO_CONFIG, n); outb(RESET_ASSP, card->iobase + ASSP_CONTROL_B); pci_read_config_dword(pcidev, PCI_ALLEGRO_CONFIG, &n); n &= ~INT_CLK_SELECT; if(card->card_type >= ESS_MAESTRO3) { n &= ~INT_CLK_MULT_ENABLE; n |= INT_CLK_SRC_NOT_PCI; } n &= ~( CLK_MULT_MODE_SELECT | CLK_MULT_MODE_SELECT_2 ); pci_write_config_dword(pcidev, PCI_ALLEGRO_CONFIG, n); if(card->card_type <= ESS_ALLEGRO) { pci_read_config_dword(pcidev, PCI_USER_CONFIG, &n); n |= IN_CLK_12MHZ_SELECT; pci_write_config_dword(pcidev, PCI_USER_CONFIG, n); } t = inb(card->iobase + ASSP_CONTROL_A); t &= ~( DSP_CLK_36MHZ_SELECT | ASSP_CLK_49MHZ_SELECT); t |= ASSP_CLK_49MHZ_SELECT; t |= ASSP_0_WS_ENABLE; outb(t, card->iobase + ASSP_CONTROL_A); outb(RUN_ASSP, card->iobase + ASSP_CONTROL_B); return 0; } static void m3_enable_ints(struct m3_card *card) { unsigned long io = card->iobase; outw(ASSP_INT_ENABLE, io + HOST_INT_CTRL); outb(inb(io + ASSP_CONTROL_C) | ASSP_HOST_INT_ENABLE, io + ASSP_CONTROL_C); } static struct file_operations m3_audio_fops = { .owner = THIS_MODULE, .llseek = no_llseek, .read = m3_read, .write = m3_write, .poll = m3_poll, .ioctl = m3_ioctl, .mmap = m3_mmap, .open = m3_open, .release = m3_release, }; #ifdef CONFIG_PM static int alloc_dsp_suspendmem(struct m3_card *card) { int len = sizeof(u16) * (REV_B_CODE_MEMORY_LENGTH + REV_B_DATA_MEMORY_LENGTH); if( (card->suspend_mem = vmalloc(len)) == NULL) return 1; return 0; } #else #define alloc_dsp_suspendmem(args...) 0 #endif /* * great day! this function is ugly as hell. */ static int __devinit m3_probe(struct pci_dev *pci_dev, const struct pci_device_id *pci_id) { u32 n; int i; struct m3_card *card = NULL; int ret = 0; int card_type = pci_id->driver_data; DPRINTK(DPMOD, "in maestro_install\n"); if (pci_enable_device(pci_dev)) return -EIO; if (pci_set_dma_mask(pci_dev, M3_PCI_DMA_MASK)) { printk(KERN_ERR PFX "architecture does not support limiting to 28bit PCI bus addresses\n"); return -ENODEV; } pci_set_master(pci_dev); if( (card = kmalloc(sizeof(struct m3_card), GFP_KERNEL)) == NULL) { printk(KERN_WARNING PFX "out of memory\n"); return -ENOMEM; } memset(card, 0, sizeof(struct m3_card)); card->pcidev = pci_dev; init_waitqueue_head(&card->suspend_queue); if ( ! request_region(pci_resource_start(pci_dev, 0), pci_resource_len (pci_dev, 0), M3_MODULE_NAME)) { printk(KERN_WARNING PFX "unable to reserve I/O space.\n"); ret = -EBUSY; goto out; } card->iobase = pci_resource_start(pci_dev, 0); if(alloc_dsp_suspendmem(card)) { printk(KERN_WARNING PFX "couldn't alloc %d bytes for saving dsp state on suspend\n", REV_B_CODE_MEMORY_LENGTH + REV_B_DATA_MEMORY_LENGTH); ret = -ENOMEM; goto out; } card->card_type = card_type; card->irq = pci_dev->irq; card->next = devs; card->magic = M3_CARD_MAGIC; spin_lock_init(&card->lock); spin_lock_init(&card->ac97_lock); devs = card; for(i = 0; i<NR_DSPS; i++) { struct m3_state *s = &(card->channels[i]); s->dev_audio = -1; } printk(KERN_INFO PFX "Configuring ESS %s found at IO 0x%04X IRQ %d\n", card_names[card->card_type], card->iobase, card->irq); pci_read_config_dword(pci_dev, PCI_SUBSYSTEM_VENDOR_ID, &n); printk(KERN_INFO PFX " subvendor id: 0x%08x\n",n); maestro_config(card); m3_assp_halt(card); m3_codec_reset(card, 0); if(m3_codec_install(card)) { ret = -EIO; goto out; } m3_assp_init(card); m3_amp_enable(card, 1); for(i=0;i<NR_DSPS;i++) { struct m3_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); mutex_init(&(s->open_mutex)); s->magic = M3_STATE_MAGIC; m3_assp_client_init(s); if(s->dma_adc.ready || s->dma_dac.ready || s->dma_adc.rawbuf) printk(KERN_WARNING PFX "initing a dsp device that is already in use?\n"); /* register devices */ if ((s->dev_audio = register_sound_dsp(&m3_audio_fops, -1)) < 0) { break; } if( allocate_dmabuf(card->pcidev, &(s->dma_adc)) || allocate_dmabuf(card->pcidev, &(s->dma_dac))) { ret = -ENOMEM; goto out; } } if(request_irq(card->irq, m3_interrupt, SA_SHIRQ, card_names[card->card_type], card)) { printk(KERN_ERR PFX "unable to allocate irq %d,\n", card->irq); ret = -EIO; goto out; } pci_set_drvdata(pci_dev, card); m3_enable_ints(card); m3_assp_continue(card); out: if(ret) { if(card->iobase) release_region(pci_resource_start(pci_dev, 0), pci_resource_len(pci_dev, 0)); vfree(card->suspend_mem); if(card->ac97) { unregister_sound_mixer(card->ac97->dev_mixer); kfree(card->ac97); } for(i=0;i<NR_DSPS;i++) { struct m3_state *s = &card->channels[i]; if(s->dev_audio != -1) unregister_sound_dsp(s->dev_audio); } kfree(card); } return ret; } static void m3_remove(struct pci_dev *pci_dev) { struct m3_card *card; unregister_reboot_notifier(&m3_reboot_nb); while ((card = devs)) { int i; devs = devs->next; free_irq(card->irq, card); unregister_sound_mixer(card->ac97->dev_mixer); kfree(card->ac97); for(i=0;i<NR_DSPS;i++) { struct m3_state *s = &card->channels[i]; if(s->dev_audio < 0) continue; unregister_sound_dsp(s->dev_audio); free_dmabuf(card->pcidev, &s->dma_adc); free_dmabuf(card->pcidev, &s->dma_dac); } release_region(card->iobase, 256); vfree(card->suspend_mem); kfree(card); } devs = NULL; } /* * some bioses like the sound chip to be powered down * at shutdown. We're just calling _suspend to * achieve that.. */ static int m3_notifier(struct notifier_block *nb, unsigned long event, void *buf) { struct m3_card *card; DPRINTK(DPMOD, "notifier suspending all cards\n"); for(card = devs; card != NULL; card = card->next) { if(!card->in_suspend) m3_suspend(card->pcidev, PMSG_SUSPEND); /* XXX legal? */ } return 0; } static int m3_suspend(struct pci_dev *pci_dev, pm_message_t state) { unsigned long flags; int i; struct m3_card *card = pci_get_drvdata(pci_dev); /* must be a better way.. */ spin_lock_irqsave(&card->lock, flags); DPRINTK(DPMOD, "pm in dev %p\n",card); for(i=0;i<NR_DSPS;i++) { struct m3_state *s = &card->channels[i]; if(s->dev_audio == -1) continue; DPRINTK(DPMOD, "stop_adc/dac() device %d\n",i); stop_dac(s); stop_adc(s); } mdelay(10); /* give the assp a chance to idle.. */ m3_assp_halt(card); if(card->suspend_mem) { int index = 0; DPRINTK(DPMOD, "saving code\n"); for(i = REV_B_CODE_MEMORY_BEGIN ; i <= REV_B_CODE_MEMORY_END; i++) card->suspend_mem[index++] = m3_assp_read(card, MEMTYPE_INTERNAL_CODE, i); DPRINTK(DPMOD, "saving data\n"); for(i = REV_B_DATA_MEMORY_BEGIN ; i <= REV_B_DATA_MEMORY_END; i++) card->suspend_mem[index++] = m3_assp_read(card, MEMTYPE_INTERNAL_DATA, i); } DPRINTK(DPMOD, "powering down apci regs\n"); m3_outw(card, 0xffff, 0x54); m3_outw(card, 0xffff, 0x56); card->in_suspend = 1; spin_unlock_irqrestore(&card->lock, flags); return 0; } static int m3_resume(struct pci_dev *pci_dev) { unsigned long flags; int index; int i; struct m3_card *card = pci_get_drvdata(pci_dev); spin_lock_irqsave(&card->lock, flags); card->in_suspend = 0; DPRINTK(DPMOD, "resuming\n"); /* first lets just bring everything back. .*/ DPRINTK(DPMOD, "bringing power back on card 0x%p\n",card); m3_outw(card, 0, 0x54); m3_outw(card, 0, 0x56); DPRINTK(DPMOD, "restoring pci configs and reseting codec\n"); maestro_config(card); m3_assp_halt(card); m3_codec_reset(card, 1); DPRINTK(DPMOD, "restoring dsp code card\n"); index = 0; for(i = REV_B_CODE_MEMORY_BEGIN ; i <= REV_B_CODE_MEMORY_END; i++) m3_assp_write(card, MEMTYPE_INTERNAL_CODE, i, card->suspend_mem[index++]); for(i = REV_B_DATA_MEMORY_BEGIN ; i <= REV_B_DATA_MEMORY_END; i++) m3_assp_write(card, MEMTYPE_INTERNAL_DATA, i, card->suspend_mem[index++]); /* tell the dma engine to restart itself */ m3_assp_write(card, MEMTYPE_INTERNAL_DATA, KDATA_DMA_ACTIVE, 0); DPRINTK(DPMOD, "resuming dsp\n"); m3_assp_continue(card); DPRINTK(DPMOD, "enabling ints\n"); m3_enable_ints(card); /* bring back the old school flavor */ for(i = 0; i < SOUND_MIXER_NRDEVICES ; i++) { int state = card->ac97->mixer_state[i]; if (!supported_mixer(card->ac97, i)) continue; card->ac97->write_mixer(card->ac97, i, state & 0xff, (state >> 8) & 0xff); } m3_amp_enable(card, 1); /* * now we flip on the music */ for(i=0;i<NR_DSPS;i++) { struct m3_state *s = &card->channels[i]; if(s->dev_audio == -1) continue; /* * db->ready makes it so these guys can be * called unconditionally.. */ DPRINTK(DPMOD, "turning on dacs ind %d\n",i); 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; } MODULE_AUTHOR("Zach Brown <zab@zabbo.net>"); MODULE_DESCRIPTION("ESS Maestro3/Allegro Driver"); MODULE_LICENSE("GPL"); #ifdef M_DEBUG module_param(debug, int, 0); #endif module_param(external_amp, int, 0); module_param(gpio_pin, int, 0); static struct pci_driver m3_pci_driver = { .name = "ess_m3_audio", .id_table = m3_id_table, .probe = m3_probe, .remove = m3_remove, .suspend = m3_suspend, .resume = m3_resume, }; static int __init m3_init_module(void) { printk(KERN_INFO PFX "version " DRIVER_VERSION " built at " __TIME__ " " __DATE__ "\n"); if (register_reboot_notifier(&m3_reboot_nb)) { printk(KERN_WARNING PFX "reboot notifier registration failed\n"); return -ENODEV; /* ? */ } if (pci_register_driver(&m3_pci_driver)) { unregister_reboot_notifier(&m3_reboot_nb); return -ENODEV; } return 0; } static void __exit m3_cleanup_module(void) { pci_unregister_driver(&m3_pci_driver); } module_init(m3_init_module); module_exit(m3_cleanup_module); void check_suspend(struct m3_card *card) { DECLARE_WAITQUEUE(wait, current); if(!card->in_suspend) return; card->in_suspend++; add_wait_queue(&card->suspend_queue, &wait); set_current_state(TASK_UNINTERRUPTIBLE); schedule(); remove_wait_queue(&card->suspend_queue, &wait); set_current_state(TASK_RUNNING); }