![Linus Torvalds](/assets/img/avatar_default.png)
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2974 lines
86 KiB
C
2974 lines
86 KiB
C
/*****************************************************************************
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*
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* ESS Maestro3/Allegro driver for Linux 2.4.x
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* (c) Copyright 2000 Zach Brown <zab@zabbo.net>
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*
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* I need to thank many people for helping make this driver happen.
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* As always, Eric Brombaugh was a hacking machine and killed many bugs
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* that I was too dumb to notice. Howard Kim at ESS provided reference boards
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* and as much docs as he could. Todd and Mick at Dell tested snapshots on
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* an army of laptops. msw and deviant at Red Hat also humoured me by hanging
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* their laptops every few hours in the name of science.
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*
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* Shouts go out to Mike "DJ XPCom" Ang.
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*
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* History
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* v1.23 - Jun 5 2002 - Michael Olson <olson@cs.odu.edu>
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* added a module option to allow selection of GPIO pin number
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* for external amp
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* v1.22 - Feb 28 2001 - Zach Brown <zab@zabbo.net>
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* allocate mem at insmod/setup, rather than open
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* limit pci dma addresses to 28bit, thanks guys.
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* v1.21 - Feb 04 2001 - Zach Brown <zab@zabbo.net>
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* fix up really dumb notifier -> suspend oops
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* v1.20 - Jan 30 2001 - Zach Brown <zab@zabbo.net>
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* get rid of pm callback and use pci_dev suspend/resume instead
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* m3_probe cleanups, including pm oops think-o
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* v1.10 - Jan 6 2001 - Zach Brown <zab@zabbo.net>
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* revert to lame remap_page_range mmap() just to make it work
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* record mmap fixed.
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* fix up incredibly broken open/release resource management
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* duh. fix record format setting.
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* add SMP locking and cleanup formatting here and there
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* v1.00 - Dec 16 2000 - Zach Brown <zab@zabbo.net>
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* port to sexy 2.4 interfaces
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* properly align instance allocations so recording works
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* clean up function namespace a little :/
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* update PCI IDs based on mail from ESS
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* arbitrarily bump version number to show its 2.4 now,
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* 2.2 will stay 0., oss_audio port gets 2.
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* v0.03 - Nov 05 2000 - Zach Brown <zab@zabbo.net>
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* disable recording but allow dsp to be opened read
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* pull out most silly compat defines
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* v0.02 - Nov 04 2000 - Zach Brown <zab@zabbo.net>
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* changed clocking setup for m3, slowdown fixed.
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* codec reset is hopefully reliable now
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* rudimentary apm/power management makes suspend/resume work
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* v0.01 - Oct 31 2000 - Zach Brown <zab@zabbo.net>
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* first release
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* v0.00 - Sep 09 2000 - Zach Brown <zab@zabbo.net>
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* first pass derivation from maestro.c
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*
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* TODO
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* in/out allocated contiguously so fullduplex mmap will work?
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* no beep on init (mute)
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* resetup msrc data memory if freq changes?
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*
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* --
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*
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* Allow me to ramble a bit about the m3 architecture. The core of the
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* chip is the 'assp', the custom ESS dsp that runs the show. It has
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* a small amount of code and data ram. ESS drops binary dsp code images
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* on our heads, but we don't get to see specs on the dsp.
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*
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* The constant piece of code on the dsp is the 'kernel'. It also has a
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* chunk of the dsp memory that is statically set aside for its control
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* info. This is the KDATA defines in maestro3.h. Part of its core
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* data is a list of code addresses that point to the pieces of DSP code
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* that it should walk through in its loop. These other pieces of code
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* do the real work. The kernel presumably jumps into each of them in turn.
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* These code images tend to have their own data area, and one can have
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* multiple data areas representing different states for each of the 'client
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* instance' code portions. There is generally a list in the kernel data
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* that points to the data instances for a given piece of code.
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*
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* We've only been given the binary image for the 'minisrc', mini sample
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* rate converter. This is rather annoying because it limits the work
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* we can do on the dsp, but it also greatly simplifies the job of managing
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* dsp data memory for the code and data for our playing streams :). We
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* statically allocate the minisrc code into a region we 'know' to be free
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* based on the map of the binary kernel image we're loading. We also
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* statically allocate the data areas for the maximum number of pcm streams
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* we can be dealing with. This max is set by the length of the static list
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* in the kernel data that records the number of minisrc data regions we
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* can have. Thats right, all software dsp mixing with static code list
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* limits. Rock.
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*
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* How sound goes in and out is still a relative mystery. It appears
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* that the dsp has the ability to get input and output through various
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* 'connections'. To do IO from or to a connection, you put the address
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* of the minisrc client area in the static kernel data lists for that
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* input or output. so for pcm -> dsp -> mixer, we put the minisrc data
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* instance in the DMA list and also in the list for the mixer. I guess
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* it Just Knows which is in/out, and we give some dma control info that
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* helps. There are all sorts of cool inputs/outputs that it seems we can't
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* use without dsp code images that know how to use them.
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*
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* So at init time we preload all the memory allocation stuff and set some
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* system wide parameters. When we really get a sound to play we build
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* up its minisrc header (stream parameters, buffer addresses, input/output
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* settings). Then we throw its header on the various lists. We also
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* tickle some KDATA settings that ask the assp to raise clock interrupts
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* and do some amount of software mixing before handing data to the ac97.
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*
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* Sorry for the vague details. Feel free to ask Eric or myself if you
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* happen to be trying to use this driver elsewhere. Please accept my
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* apologies for the quality of the OSS support code, its passed through
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* too many hands now and desperately wants to be rethought.
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*/
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/*****************************************************************************/
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#include <linux/config.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/ctype.h>
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#include <linux/ioport.h>
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#include <linux/sched.h>
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#include <linux/delay.h>
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#include <linux/sound.h>
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#include <linux/slab.h>
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#include <linux/soundcard.h>
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#include <linux/pci.h>
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#include <linux/vmalloc.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/poll.h>
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#include <linux/reboot.h>
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#include <linux/spinlock.h>
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#include <linux/ac97_codec.h>
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#include <linux/wait.h>
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#include <asm/io.h>
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#include <asm/dma.h>
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#include <asm/uaccess.h>
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#include "maestro3.h"
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#define M_DEBUG 1
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#define DRIVER_VERSION "1.23"
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#define M3_MODULE_NAME "maestro3"
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#define PFX M3_MODULE_NAME ": "
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#define M3_STATE_MAGIC 0x734d724d
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#define M3_CARD_MAGIC 0x646e6f50
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#define ESS_FMT_STEREO 0x01
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#define ESS_FMT_16BIT 0x02
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#define ESS_FMT_MASK 0x03
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#define ESS_DAC_SHIFT 0
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#define ESS_ADC_SHIFT 4
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#define DAC_RUNNING 1
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#define ADC_RUNNING 2
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#define SND_DEV_DSP16 5
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#ifdef M_DEBUG
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static int debug;
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#define DPMOD 1 /* per module load */
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#define DPSTR 2 /* per 'stream' */
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#define DPSYS 3 /* per syscall */
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#define DPCRAP 4 /* stuff the user shouldn't see unless they're really debuggin */
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#define DPINT 5 /* per interrupt, LOTS */
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#define DPRINTK(DP, args...) {if (debug >= (DP)) printk(KERN_DEBUG PFX args);}
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#else
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#define DPRINTK(x)
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#endif
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struct m3_list {
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int curlen;
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u16 mem_addr;
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int max;
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};
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static int external_amp = 1;
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static int gpio_pin = -1;
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struct m3_state {
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unsigned int magic;
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struct m3_card *card;
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unsigned char fmt, enable;
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int index;
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/* this locks around the oss state in the driver */
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/* no, this lock is removed - only use card->lock */
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/* otherwise: against what are you protecting on SMP
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when irqhandler uses s->lock
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and m3_assp_read uses card->lock ?
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*/
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struct semaphore open_sem;
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wait_queue_head_t open_wait;
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mode_t open_mode;
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int dev_audio;
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struct assp_instance {
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u16 code, data;
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} dac_inst, adc_inst;
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/* should be in dmabuf */
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unsigned int rateadc, ratedac;
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struct dmabuf {
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void *rawbuf;
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unsigned buforder;
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unsigned numfrag;
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unsigned fragshift;
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unsigned hwptr, swptr;
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unsigned total_bytes;
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int count;
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unsigned error; /* over/underrun */
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wait_queue_head_t wait;
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/* redundant, but makes calculations easier */
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unsigned fragsize;
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unsigned dmasize;
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unsigned fragsamples;
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/* OSS stuff */
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unsigned mapped:1;
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unsigned ready:1;
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unsigned endcleared:1;
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unsigned ossfragshift;
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int ossmaxfrags;
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unsigned subdivision;
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/* new in m3 */
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int mixer_index, dma_index, msrc_index, adc1_index;
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int in_lists;
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/* 2.4.. */
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dma_addr_t handle;
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} dma_dac, dma_adc;
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};
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struct m3_card {
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unsigned int magic;
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struct m3_card *next;
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struct ac97_codec *ac97;
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spinlock_t ac97_lock;
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int card_type;
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#define NR_DSPS 1
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#define MAX_DSPS NR_DSPS
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struct m3_state channels[MAX_DSPS];
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/* this locks around the physical registers on the card */
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spinlock_t lock;
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/* hardware resources */
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struct pci_dev *pcidev;
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u32 iobase;
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u32 irq;
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int dacs_active;
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int timer_users;
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struct m3_list msrc_list,
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mixer_list,
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adc1_list,
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dma_list;
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/* for storing reset state..*/
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u8 reset_state;
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u16 *suspend_mem;
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int in_suspend;
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wait_queue_head_t suspend_queue;
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};
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/*
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* an arbitrary volume we set the internal
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* volume settings to so that the ac97 volume
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* range is a little less insane. 0x7fff is
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* max.
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*/
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#define ARB_VOLUME ( 0x6800 )
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static const unsigned sample_shift[] = { 0, 1, 1, 2 };
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enum {
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ESS_ALLEGRO,
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ESS_MAESTRO3,
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/*
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* a maestro3 with 'hardware strapping', only
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* found inside ESS?
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*/
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ESS_MAESTRO3HW,
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};
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static char *card_names[] = {
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[ESS_ALLEGRO] = "Allegro",
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[ESS_MAESTRO3] = "Maestro3(i)",
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[ESS_MAESTRO3HW] = "Maestro3(i)hw"
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};
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#ifndef PCI_VENDOR_ESS
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#define PCI_VENDOR_ESS 0x125D
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#endif
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#define M3_DEVICE(DEV, TYPE) \
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{ \
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.vendor = PCI_VENDOR_ESS, \
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.device = DEV, \
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.subvendor = PCI_ANY_ID, \
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.subdevice = PCI_ANY_ID, \
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.class = PCI_CLASS_MULTIMEDIA_AUDIO << 8, \
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.class_mask = 0xffff << 8, \
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.driver_data = TYPE, \
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}
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static struct pci_device_id m3_id_table[] = {
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M3_DEVICE(0x1988, ESS_ALLEGRO),
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M3_DEVICE(0x1998, ESS_MAESTRO3),
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M3_DEVICE(0x199a, ESS_MAESTRO3HW),
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{0,}
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};
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MODULE_DEVICE_TABLE (pci, m3_id_table);
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/*
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* reports seem to indicate that the m3 is limited
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* to 28bit bus addresses. aaaargggh...
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*/
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#define M3_PCI_DMA_MASK 0x0fffffff
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static unsigned
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ld2(unsigned int x)
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{
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unsigned r = 0;
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if (x >= 0x10000) {
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x >>= 16;
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r += 16;
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}
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if (x >= 0x100) {
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x >>= 8;
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r += 8;
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}
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if (x >= 0x10) {
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x >>= 4;
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r += 4;
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}
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if (x >= 4) {
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x >>= 2;
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r += 2;
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}
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if (x >= 2)
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r++;
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return r;
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}
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static struct m3_card *devs;
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/*
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* I'm not very good at laying out functions in a file :)
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*/
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static int m3_notifier(struct notifier_block *nb, unsigned long event, void *buf);
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static int m3_suspend(struct pci_dev *pci_dev, pm_message_t state);
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static void check_suspend(struct m3_card *card);
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static struct notifier_block m3_reboot_nb = {
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.notifier_call = m3_notifier,
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};
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static void m3_outw(struct m3_card *card,
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u16 value, unsigned long reg)
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{
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check_suspend(card);
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outw(value, card->iobase + reg);
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}
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static u16 m3_inw(struct m3_card *card, unsigned long reg)
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{
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check_suspend(card);
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return inw(card->iobase + reg);
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}
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static void m3_outb(struct m3_card *card,
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u8 value, unsigned long reg)
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{
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check_suspend(card);
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outb(value, card->iobase + reg);
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}
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static u8 m3_inb(struct m3_card *card, unsigned long reg)
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{
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check_suspend(card);
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return inb(card->iobase + reg);
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}
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/*
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* access 16bit words to the code or data regions of the dsp's memory.
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* index addresses 16bit words.
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*/
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static u16 __m3_assp_read(struct m3_card *card, u16 region, u16 index)
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{
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m3_outw(card, region & MEMTYPE_MASK, DSP_PORT_MEMORY_TYPE);
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m3_outw(card, index, DSP_PORT_MEMORY_INDEX);
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return m3_inw(card, DSP_PORT_MEMORY_DATA);
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}
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static u16 m3_assp_read(struct m3_card *card, u16 region, u16 index)
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{
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unsigned long flags;
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u16 ret;
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spin_lock_irqsave(&(card->lock), flags);
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ret = __m3_assp_read(card, region, index);
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spin_unlock_irqrestore(&(card->lock), flags);
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return ret;
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}
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static void __m3_assp_write(struct m3_card *card,
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u16 region, u16 index, u16 data)
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{
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m3_outw(card, region & MEMTYPE_MASK, DSP_PORT_MEMORY_TYPE);
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m3_outw(card, index, DSP_PORT_MEMORY_INDEX);
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m3_outw(card, data, DSP_PORT_MEMORY_DATA);
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}
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static void m3_assp_write(struct m3_card *card,
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u16 region, u16 index, u16 data)
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{
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unsigned long flags;
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spin_lock_irqsave(&(card->lock), flags);
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__m3_assp_write(card, region, index, data);
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spin_unlock_irqrestore(&(card->lock), flags);
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}
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static void m3_assp_halt(struct m3_card *card)
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{
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card->reset_state = m3_inb(card, DSP_PORT_CONTROL_REG_B) & ~REGB_STOP_CLOCK;
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mdelay(10);
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m3_outb(card, card->reset_state & ~REGB_ENABLE_RESET, DSP_PORT_CONTROL_REG_B);
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}
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static void m3_assp_continue(struct m3_card *card)
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{
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m3_outb(card, card->reset_state | REGB_ENABLE_RESET, DSP_PORT_CONTROL_REG_B);
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}
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/*
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* This makes me sad. the maestro3 has lists
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* internally that must be packed.. 0 terminates,
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* apparently, or maybe all unused entries have
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* to be 0, the lists have static lengths set
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* by the binary code images.
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*/
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static int m3_add_list(struct m3_card *card,
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struct m3_list *list, u16 val)
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{
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DPRINTK(DPSTR, "adding val 0x%x to list 0x%p at pos %d\n",
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val, list, list->curlen);
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m3_assp_write(card, MEMTYPE_INTERNAL_DATA,
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list->mem_addr + list->curlen,
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val);
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return list->curlen++;
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}
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static void m3_remove_list(struct m3_card *card,
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struct m3_list *list, int index)
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{
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u16 val;
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int lastindex = list->curlen - 1;
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DPRINTK(DPSTR, "removing ind %d from list 0x%p\n",
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index, list);
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if(index != lastindex) {
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val = m3_assp_read(card, MEMTYPE_INTERNAL_DATA,
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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 */
|
|
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(&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);
|
|
|
|
up(&s->open_sem);
|
|
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);
|
|
|
|
down(&s->open_sem);
|
|
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);
|
|
up(&s->open_sem);
|
|
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;
|
|
}
|
|
static 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 __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);
|
|
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_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));
|
|
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, 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);
|
|
}
|