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2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 | /***************************************************************************** * * 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 * v1.22 - 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 generaly 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/malloc.h> #include <linux/soundcard.h> #include <linux/pci.h> #include <linux/vmalloc.h> #include <asm/io.h> #include <asm/dma.h> #include <linux/init.h> #include <linux/poll.h> #include <linux/reboot.h> #include <asm/uaccess.h> #include <asm/hardirq.h> #include <linux/spinlock.h> #include <linux/ac97_codec.h> /* * for crizappy mmap() */ #include <linux/wrapper.h> #include "maestro3.h" #define M_DEBUG 1 #define DRIVER_VERSION "1.22" #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=0; #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; }; int external_amp = 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 */ spinlock_t lock; struct semaphore open_sem; 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[] __initdata = { 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 = NULL; /* * 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 void m3_suspend(struct pci_dev *pci_dev); static void check_suspend(struct m3_card *card); struct notifier_block m3_reboot_nb = {m3_notifier, NULL, 0}; 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"); } 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); } 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; } 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 void m3_interrupt(int irq, void *dev_id, struct pt_regs *regs); 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->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->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 void 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; /* presumably acking the ints? */ outw(status, c->iobase+0x1A); if(c->in_suspend) return; /* * 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(&s->lock); m3_update_ptr(s); spin_unlock(&s->lock); } } } /* XXX is this needed? */ if(status & 0x40) outb(0x40, c->iobase+0x1A); } /* --------------------------------------------------------------------- */ 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 loff_t m3_llseek(struct file *file, loff_t offset, int origin) { return -ESPIPE; } /* --------------------------------------------------------------------- */ 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; current->state = TASK_INTERRUPTIBLE; add_wait_queue(&s->dma_dac.wait, &wait); for (;;) { 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) DPRINTK(DPCRAP,"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; } static ssize_t m3_read(struct file *file, char *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 (ppos != &file->f_pos) return -ESPIPE; 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->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->lock, flags); timed_out = interruptible_sleep_on_timeout(&s->dma_adc.wait, HZ) == 0; spin_lock_irqsave(&s->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->lock, flags); if (copy_to_user(buffer, s->dma_adc.rawbuf + swptr, cnt)) { ret = ret ? ret : -EFAULT; return ret; } spin_lock_irqsave(&s->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->lock, flags); return ret; } static ssize_t m3_write(struct file *file, const char *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 (ppos != &file->f_pos) return -ESPIPE; 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->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->lock, flags); timed_out = interruptible_sleep_on_timeout(&s->dma_dac.wait, HZ) == 0; spin_lock_irqsave(&s->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->lock, flags); if (copy_from_user(s->dma_dac.rawbuf + swptr, buffer, cnt)) { if (!ret) ret = -EFAULT; return ret; } spin_lock_irqsave(&s->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->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->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->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_page_range(vma->vm_start, virt_to_phys(db->rawbuf), 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; unsigned long flags; audio_buf_info abinfo; count_info cinfo; int val, mapped, ret; unsigned char fmtm, fmtd; 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, (int *)arg); 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, (int *)arg); case SNDCTL_DSP_RESET: spin_lock_irqsave(&s->lock, flags); if (file->f_mode & FMODE_WRITE) { stop_dac(s); synchronize_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->dma_adc.swptr = s->dma_adc.hwptr = s->dma_adc.count = s->dma_adc.total_bytes = 0; } spin_unlock_irqrestore(&s->lock, flags); return 0; case SNDCTL_DSP_SPEED: get_user_ret(val, (int *)arg, -EFAULT); spin_lock_irqsave(&s->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(&s->lock, flags); return put_user((file->f_mode & FMODE_READ) ? s->rateadc : s->ratedac, (int *)arg); case SNDCTL_DSP_STEREO: get_user_ret(val, (int *)arg, -EFAULT); spin_lock_irqsave(&s->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(&s->lock, flags); return 0; case SNDCTL_DSP_CHANNELS: get_user_ret(val, (int *)arg, -EFAULT); spin_lock_irqsave(&s->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(&s->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, (int *)arg); case SNDCTL_DSP_GETFMTS: /* Returns a mask */ return put_user(AFMT_U8|AFMT_S16_LE, (int *)arg); case SNDCTL_DSP_SETFMT: /* Selects ONE fmt*/ get_user_ret(val, (int *)arg, -EFAULT); spin_lock_irqsave(&s->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(&s->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, (int *)arg); 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, (int *)arg); case SNDCTL_DSP_SETTRIGGER: get_user_ret(val, (int *)arg, -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(&s->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(&s->lock, flags); return copy_to_user((void *)arg, &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(&s->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(&s->lock, flags); return copy_to_user((void *)arg, &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(&s->lock, flags); m3_update_ptr(s); val = s->dma_dac.count; spin_unlock_irqrestore(&s->lock, flags); return put_user(val, (int *)arg); case SNDCTL_DSP_GETIPTR: if (!(file->f_mode & FMODE_READ)) return -EINVAL; spin_lock_irqsave(&s->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(&s->lock, flags); return copy_to_user((void *)arg, &cinfo, sizeof(cinfo)); case SNDCTL_DSP_GETOPTR: if (!(file->f_mode & FMODE_WRITE)) return -EINVAL; spin_lock_irqsave(&s->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(&s->lock, flags); return copy_to_user((void *)arg, &cinfo, sizeof(cinfo)); 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, (int *)arg); } if ((val = prog_dmabuf(s, 1))) return val; return put_user(s->dma_adc.fragsize, (int *)arg); case SNDCTL_DSP_SETFRAGMENT: get_user_ret(val, (int *)arg, -EFAULT); spin_lock_irqsave(&s->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(&s->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, (int *)arg, -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, (int *)arg); 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, (int *)arg); 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, (int *)arg); 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 * boundry; the m3 hardware can't have dma cross a 64k bus * address boundry. */ 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++) mem_map_reserve(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++) mem_map_unreserve(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) { int minor = MINOR(inode->i_rdev); 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 */ 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); } spin_lock_irqsave(&s->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); MOD_INC_USE_COUNT; up(&s->open_sem); spin_unlock_irqrestore(&s->lock, flags); return 0; } static int m3_release(struct inode *inode, struct file *file) { struct m3_state *s = (struct m3_state *)file->private_data; unsigned long flags; VALIDATE_STATE(s); if (file->f_mode & FMODE_WRITE) drain_dac(s, file->f_flags & O_NONBLOCK); down(&s->open_sem); spin_lock_irqsave(&s->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(&s->lock, flags); up(&s->open_sem); wake_up(&s->open_wait); MOD_DEC_USE_COUNT; 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; } 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; } 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) { int minor = MINOR(inode->i_rdev); struct m3_card *card = devs; MOD_INC_USE_COUNT; for (card = devs; card != NULL; card = card->next) { if((card->ac97 != NULL) && (card->ac97->dev_mixer == minor)) break; } if (!card) { MOD_DEC_USE_COUNT; return -ENODEV; } file->private_data = card->ac97; return 0; } static int m3_release_mixdev(struct inode *inode, struct file *file) { MOD_DEC_USE_COUNT; 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 = { llseek: m3_llseek, ioctl: m3_ioctl_mixdev, open: m3_open_mixdev, release: m3_release_mixdev, }; 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 { 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 { 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 __init m3_codec_install(struct m3_card *card) { struct ac97_codec *codec; if ((codec = kmalloc(sizeof(struct ac97_codec), GFP_KERNEL)) == NULL) return -ENOMEM; memset(codec, 0, sizeof(struct ac97_codec)); codec->private_data = card; codec->codec_read = m3_ac97_read; codec->codec_write = m3_ac97_write; if (ac97_probe_codec(codec) == 0) { printk(KERN_ERR PFX "codec probe failed\n"); kfree(codec); return -1; } if ((codec->dev_mixer = register_sound_mixer(&m3_mixer_fops, -1)) < 0) { printk(KERN_ERR PFX "couldn't register mixer!\n"); kfree(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; switch (card->card_type) { case ESS_ALLEGRO: polarity_port = 0x1800; break; default: /* presumably this is for all 'maestro3's.. */ polarity_port = 0x1100; 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 = { llseek: &m3_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 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; } void free_dsp_suspendmem(struct m3_card *card) { if(card->suspend_mem) vfree(card->suspend_mem); } #else #define alloc_dsp_suspendmem(args...) 0 #define free_dsp_suspendmem(args...) #endif /* * great day! this function is ugly as hell. */ static int __init 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_dma_supported(pci_dev, M3_PCI_DMA_MASK)) { printk(KERN_ERR PFX "architecture does not support limiting to 28bit PCI bus addresses\n"); return -ENODEV; } if (pci_enable_device(pci_dev)) return -EIO; pci_set_master(pci_dev); pci_dev->dma_mask = M3_PCI_DMA_MASK; 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); spin_lock_init(&s->lock); init_MUTEX(&(s->open_sem)); 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_dev->driver_data = 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)); free_dsp_suspendmem(card); 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); free_dsp_suspendmem(card); 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); /* XXX legal? */ } return 0; } static void m3_suspend(struct pci_dev *pci_dev) { unsigned long flags; int i; struct m3_card *card = pci_dev->driver_data; /* must be a better way.. */ save_flags(flags); cli(); 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; restore_flags(flags); } static void m3_resume(struct pci_dev *pci_dev) { unsigned long flags; int index; int i; struct m3_card *card = pci_dev->driver_data; save_flags(flags); /* paranoia */ cli(); 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); } restore_flags(flags); /* * all right, we think things are ready, * wake up people who were using the device * when we suspended */ wake_up(&card->suspend_queue); } MODULE_AUTHOR("Zach Brown <zab@zabbo.net>"); MODULE_DESCRIPTION("ESS Maestro3/Allegro Driver"); #ifdef M_DEBUG MODULE_PARM(debug,"i"); #endif MODULE_PARM(external_amp,"i"); 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) { if (!pci_present()) /* No PCI bus in this machine! */ return -ENODEV; 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)) { pci_unregister_driver(&m3_pci_driver); 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); current->state = TASK_UNINTERRUPTIBLE; schedule(); remove_wait_queue(&card->suspend_queue, &wait); current->state = TASK_RUNNING; } |