| /* |
| * linux/drivers/sound/soundcard.c |
| * |
| * Sound card driver for Linux |
| * |
| * |
| * Copyright (C) by Hannu Savolainen 1993-1997 |
| * |
| * OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL) |
| * Version 2 (June 1991). See the "COPYING" file distributed with this software |
| * for more info. |
| * |
| * |
| * Thomas Sailer : ioctl code reworked (vmalloc/vfree removed) |
| * integrated sound_switch.c |
| * Stefan Reinauer : integrated /proc/sound (equals to /dev/sndstat, |
| * which should disappear in the near future) |
| * Eric Dumas : devfs support (22-Jan-98) <dumas@linux.eu.org> with |
| * fixups by C. Scott Ananian <cananian@alumni.princeton.edu> |
| * Richard Gooch : moved common (non OSS-specific) devices to sound_core.c |
| * Rob Riggs : Added persistent DMA buffers support (1998/10/17) |
| * Christoph Hellwig : Some cleanup work (2000/03/01) |
| */ |
| |
| #include <linux/config.h> |
| |
| #include "sound_config.h" |
| #include <linux/init.h> |
| #include <linux/types.h> |
| #include <linux/errno.h> |
| #include <linux/signal.h> |
| #include <linux/fcntl.h> |
| #include <linux/ctype.h> |
| #include <linux/stddef.h> |
| #include <linux/kmod.h> |
| #include <asm/dma.h> |
| #include <asm/io.h> |
| #include <asm/segment.h> |
| #include <linux/wait.h> |
| #include <linux/slab.h> |
| #include <linux/ioport.h> |
| #include <linux/devfs_fs_kernel.h> |
| #include <linux/major.h> |
| #include <linux/delay.h> |
| #include <linux/proc_fs.h> |
| #include <linux/smp_lock.h> |
| #include <linux/module.h> |
| |
| /* |
| * This ought to be moved into include/asm/dma.h |
| */ |
| #ifndef valid_dma |
| #define valid_dma(n) ((n) >= 0 && (n) < MAX_DMA_CHANNELS && (n) != 4) |
| #endif |
| |
| /* |
| * Table for permanently allocated memory (used when unloading the module) |
| */ |
| caddr_t sound_mem_blocks[1024]; |
| int sound_nblocks = 0; |
| |
| /* Persistent DMA buffers */ |
| #ifdef CONFIG_SOUND_DMAP |
| int sound_dmap_flag = 1; |
| #else |
| int sound_dmap_flag = 0; |
| #endif |
| |
| static char dma_alloc_map[MAX_DMA_CHANNELS] = {0}; |
| |
| #define DMA_MAP_UNAVAIL 0 |
| #define DMA_MAP_FREE 1 |
| #define DMA_MAP_BUSY 2 |
| |
| |
| unsigned long seq_time = 0; /* Time for /dev/sequencer */ |
| |
| /* |
| * Table for configurable mixer volume handling |
| */ |
| static mixer_vol_table mixer_vols[MAX_MIXER_DEV]; |
| static int num_mixer_volumes = 0; |
| |
| int *load_mixer_volumes(char *name, int *levels, int present) |
| { |
| int i, n; |
| |
| for (i = 0; i < num_mixer_volumes; i++) { |
| if (strncmp(name, mixer_vols[i].name, 32) == 0) { |
| if (present) |
| mixer_vols[i].num = i; |
| return mixer_vols[i].levels; |
| } |
| } |
| if (num_mixer_volumes >= MAX_MIXER_DEV) { |
| printk(KERN_ERR "Sound: Too many mixers (%s)\n", name); |
| return levels; |
| } |
| n = num_mixer_volumes++; |
| |
| strncpy(mixer_vols[n].name, name, 32); |
| |
| if (present) |
| mixer_vols[n].num = n; |
| else |
| mixer_vols[n].num = -1; |
| |
| for (i = 0; i < 32; i++) |
| mixer_vols[n].levels[i] = levels[i]; |
| return mixer_vols[n].levels; |
| } |
| |
| static int set_mixer_levels(caddr_t arg) |
| { |
| /* mixer_vol_table is 174 bytes, so IMHO no reason to not allocate it on the stack */ |
| mixer_vol_table buf; |
| |
| if (__copy_from_user(&buf, arg, sizeof(buf))) |
| return -EFAULT; |
| load_mixer_volumes(buf.name, buf.levels, 0); |
| if (__copy_to_user(arg, &buf, sizeof(buf))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int get_mixer_levels(caddr_t arg) |
| { |
| int n; |
| |
| if (__get_user(n, (int *)(&(((mixer_vol_table *)arg)->num)))) |
| return -EFAULT; |
| if (n < 0 || n >= num_mixer_volumes) |
| return -EINVAL; |
| if (__copy_to_user(arg, &mixer_vols[n], sizeof(mixer_vol_table))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| #ifndef MIN |
| #define MIN(a,b) (((a) < (b)) ? (a) : (b)) |
| #endif |
| |
| /* 4K page size but our output routines use some slack for overruns */ |
| #define PROC_BLOCK_SIZE (3*1024) |
| |
| static ssize_t sound_read(struct file *file, char *buf, size_t count, loff_t *ppos) |
| { |
| int dev = MINOR(file->f_dentry->d_inode->i_rdev); |
| int ret = -EINVAL; |
| |
| /* |
| * The OSS drivers aren't remotely happy without this locking, |
| * and unless someone fixes them when they are about to bite the |
| * big one anyway, we might as well bandage here.. |
| */ |
| |
| lock_kernel(); |
| |
| DEB(printk("sound_read(dev=%d, count=%d)\n", dev, count)); |
| switch (dev & 0x0f) { |
| case SND_DEV_DSP: |
| case SND_DEV_DSP16: |
| case SND_DEV_AUDIO: |
| ret = audio_read(dev, file, buf, count); |
| break; |
| |
| case SND_DEV_SEQ: |
| case SND_DEV_SEQ2: |
| ret = sequencer_read(dev, file, buf, count); |
| break; |
| |
| case SND_DEV_MIDIN: |
| ret = MIDIbuf_read(dev, file, buf, count); |
| } |
| unlock_kernel(); |
| return ret; |
| } |
| |
| static ssize_t sound_write(struct file *file, const char *buf, size_t count, loff_t *ppos) |
| { |
| int dev = MINOR(file->f_dentry->d_inode->i_rdev); |
| int ret = -EINVAL; |
| |
| lock_kernel(); |
| DEB(printk("sound_write(dev=%d, count=%d)\n", dev, count)); |
| switch (dev & 0x0f) { |
| case SND_DEV_SEQ: |
| case SND_DEV_SEQ2: |
| ret = sequencer_write(dev, file, buf, count); |
| break; |
| |
| case SND_DEV_DSP: |
| case SND_DEV_DSP16: |
| case SND_DEV_AUDIO: |
| ret = audio_write(dev, file, buf, count); |
| break; |
| |
| case SND_DEV_MIDIN: |
| ret = MIDIbuf_write(dev, file, buf, count); |
| break; |
| } |
| unlock_kernel(); |
| return ret; |
| } |
| |
| static int sound_open(struct inode *inode, struct file *file) |
| { |
| int dev = MINOR(inode->i_rdev); |
| int retval; |
| |
| DEB(printk("sound_open(dev=%d)\n", dev)); |
| if ((dev >= SND_NDEVS) || (dev < 0)) { |
| printk(KERN_ERR "Invalid minor device %d\n", dev); |
| return -ENXIO; |
| } |
| switch (dev & 0x0f) { |
| case SND_DEV_CTL: |
| dev >>= 4; |
| if (dev >= 0 && dev < MAX_MIXER_DEV && mixer_devs[dev] == NULL) { |
| char modname[20]; |
| sprintf(modname, "mixer%d", dev); |
| request_module(modname); |
| } |
| if (dev && (dev >= num_mixers || mixer_devs[dev] == NULL)) |
| return -ENXIO; |
| |
| if (mixer_devs[dev]->owner) |
| __MOD_INC_USE_COUNT (mixer_devs[dev]->owner); |
| break; |
| |
| case SND_DEV_SEQ: |
| case SND_DEV_SEQ2: |
| if ((retval = sequencer_open(dev, file)) < 0) |
| return retval; |
| break; |
| |
| case SND_DEV_MIDIN: |
| if ((retval = MIDIbuf_open(dev, file)) < 0) |
| return retval; |
| break; |
| |
| case SND_DEV_DSP: |
| case SND_DEV_DSP16: |
| case SND_DEV_AUDIO: |
| if ((retval = audio_open(dev, file)) < 0) |
| return retval; |
| break; |
| |
| default: |
| printk(KERN_ERR "Invalid minor device %d\n", dev); |
| return -ENXIO; |
| } |
| |
| return 0; |
| } |
| |
| static int sound_release(struct inode *inode, struct file *file) |
| { |
| int dev = MINOR(inode->i_rdev); |
| |
| lock_kernel(); |
| DEB(printk("sound_release(dev=%d)\n", dev)); |
| switch (dev & 0x0f) { |
| case SND_DEV_CTL: |
| dev >>= 4; |
| if (mixer_devs[dev]->owner) |
| __MOD_DEC_USE_COUNT (mixer_devs[dev]->owner); |
| break; |
| |
| case SND_DEV_SEQ: |
| case SND_DEV_SEQ2: |
| sequencer_release(dev, file); |
| break; |
| |
| case SND_DEV_MIDIN: |
| MIDIbuf_release(dev, file); |
| break; |
| |
| case SND_DEV_DSP: |
| case SND_DEV_DSP16: |
| case SND_DEV_AUDIO: |
| audio_release(dev, file); |
| break; |
| |
| default: |
| printk(KERN_ERR "Sound error: Releasing unknown device 0x%02x\n", dev); |
| } |
| unlock_kernel(); |
| |
| return 0; |
| } |
| |
| static int get_mixer_info(int dev, caddr_t arg) |
| { |
| mixer_info info; |
| |
| strncpy(info.id, mixer_devs[dev]->id, sizeof(info.id)); |
| strncpy(info.name, mixer_devs[dev]->name, sizeof(info.name)); |
| info.name[sizeof(info.name)-1] = 0; |
| info.modify_counter = mixer_devs[dev]->modify_counter; |
| if (__copy_to_user(arg, &info, sizeof(info))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int get_old_mixer_info(int dev, caddr_t arg) |
| { |
| _old_mixer_info info; |
| |
| strncpy(info.id, mixer_devs[dev]->id, sizeof(info.id)); |
| strncpy(info.name, mixer_devs[dev]->name, sizeof(info.name)); |
| info.name[sizeof(info.name)-1] = 0; |
| if (copy_to_user(arg, &info, sizeof(info))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int sound_mixer_ioctl(int mixdev, unsigned int cmd, caddr_t arg) |
| { |
| if (mixdev < 0 || mixdev >= MAX_MIXER_DEV) |
| return -ENXIO; |
| /* Try to load the mixer... */ |
| if (mixer_devs[mixdev] == NULL) { |
| char modname[20]; |
| sprintf(modname, "mixer%d", mixdev); |
| request_module(modname); |
| } |
| if (mixdev >= num_mixers || !mixer_devs[mixdev]) |
| return -ENXIO; |
| if (cmd == SOUND_MIXER_INFO) |
| return get_mixer_info(mixdev, arg); |
| if (cmd == SOUND_OLD_MIXER_INFO) |
| return get_old_mixer_info(mixdev, arg); |
| if (_SIOC_DIR(cmd) & _SIOC_WRITE) |
| mixer_devs[mixdev]->modify_counter++; |
| if (!mixer_devs[mixdev]->ioctl) |
| return -EINVAL; |
| return mixer_devs[mixdev]->ioctl(mixdev, cmd, arg); |
| } |
| |
| static int sound_ioctl(struct inode *inode, struct file *file, |
| unsigned int cmd, unsigned long arg) |
| { |
| int err, len = 0, dtype; |
| int dev = MINOR(inode->i_rdev); |
| |
| if (_SIOC_DIR(cmd) != _SIOC_NONE && _SIOC_DIR(cmd) != 0) { |
| /* |
| * Have to validate the address given by the process. |
| */ |
| len = _SIOC_SIZE(cmd); |
| if (len < 1 || len > 65536 || arg == 0) |
| return -EFAULT; |
| if (_SIOC_DIR(cmd) & _SIOC_WRITE) |
| if ((err = verify_area(VERIFY_READ, (void *)arg, len)) < 0) |
| return err; |
| if (_SIOC_DIR(cmd) & _SIOC_READ) |
| if ((err = verify_area(VERIFY_WRITE, (void *)arg, len)) < 0) |
| return err; |
| } |
| DEB(printk("sound_ioctl(dev=%d, cmd=0x%x, arg=0x%x)\n", dev, cmd, arg)); |
| if (cmd == OSS_GETVERSION) |
| return __put_user(SOUND_VERSION, (int *)arg); |
| |
| if (_IOC_TYPE(cmd) == 'M' && num_mixers > 0 && /* Mixer ioctl */ |
| (dev & 0x0f) != SND_DEV_CTL) { |
| dtype = dev & 0x0f; |
| switch (dtype) { |
| case SND_DEV_DSP: |
| case SND_DEV_DSP16: |
| case SND_DEV_AUDIO: |
| return sound_mixer_ioctl(audio_devs[dev >> 4]->mixer_dev, |
| cmd, (caddr_t)arg); |
| |
| default: |
| return sound_mixer_ioctl(dev >> 4, cmd, (caddr_t)arg); |
| } |
| } |
| switch (dev & 0x0f) { |
| case SND_DEV_CTL: |
| if (cmd == SOUND_MIXER_GETLEVELS) |
| return get_mixer_levels((caddr_t)arg); |
| if (cmd == SOUND_MIXER_SETLEVELS) |
| return set_mixer_levels((caddr_t)arg); |
| return sound_mixer_ioctl(dev >> 4, cmd, (caddr_t)arg); |
| |
| case SND_DEV_SEQ: |
| case SND_DEV_SEQ2: |
| return sequencer_ioctl(dev, file, cmd, (caddr_t)arg); |
| |
| case SND_DEV_DSP: |
| case SND_DEV_DSP16: |
| case SND_DEV_AUDIO: |
| return audio_ioctl(dev, file, cmd, (caddr_t)arg); |
| break; |
| |
| case SND_DEV_MIDIN: |
| return MIDIbuf_ioctl(dev, file, cmd, (caddr_t)arg); |
| break; |
| |
| } |
| return -EINVAL; |
| } |
| |
| static unsigned int sound_poll(struct file *file, poll_table * wait) |
| { |
| struct inode *inode = file->f_dentry->d_inode; |
| int dev = MINOR(inode->i_rdev); |
| |
| DEB(printk("sound_poll(dev=%d)\n", dev)); |
| switch (dev & 0x0f) { |
| case SND_DEV_SEQ: |
| case SND_DEV_SEQ2: |
| return sequencer_poll(dev, file, wait); |
| |
| case SND_DEV_MIDIN: |
| return MIDIbuf_poll(dev, file, wait); |
| |
| case SND_DEV_DSP: |
| case SND_DEV_DSP16: |
| case SND_DEV_AUDIO: |
| return DMAbuf_poll(file, dev >> 4, wait); |
| } |
| return 0; |
| } |
| |
| static int sound_mmap(struct file *file, struct vm_area_struct *vma) |
| { |
| int dev_class; |
| unsigned long size; |
| struct dma_buffparms *dmap = NULL; |
| int dev = MINOR(file->f_dentry->d_inode->i_rdev); |
| |
| dev_class = dev & 0x0f; |
| dev >>= 4; |
| |
| if (dev_class != SND_DEV_DSP && dev_class != SND_DEV_DSP16 && dev_class != SND_DEV_AUDIO) { |
| printk(KERN_ERR "Sound: mmap() not supported for other than audio devices\n"); |
| return -EINVAL; |
| } |
| lock_kernel(); |
| if (vma->vm_flags & VM_WRITE) /* Map write and read/write to the output buf */ |
| dmap = audio_devs[dev]->dmap_out; |
| else if (vma->vm_flags & VM_READ) |
| dmap = audio_devs[dev]->dmap_in; |
| else { |
| printk(KERN_ERR "Sound: Undefined mmap() access\n"); |
| unlock_kernel(); |
| return -EINVAL; |
| } |
| |
| if (dmap == NULL) { |
| printk(KERN_ERR "Sound: mmap() error. dmap == NULL\n"); |
| unlock_kernel(); |
| return -EIO; |
| } |
| if (dmap->raw_buf == NULL) { |
| printk(KERN_ERR "Sound: mmap() called when raw_buf == NULL\n"); |
| unlock_kernel(); |
| return -EIO; |
| } |
| if (dmap->mapping_flags) { |
| printk(KERN_ERR "Sound: mmap() called twice for the same DMA buffer\n"); |
| unlock_kernel(); |
| return -EIO; |
| } |
| if (vma->vm_pgoff != 0) { |
| printk(KERN_ERR "Sound: mmap() offset must be 0.\n"); |
| unlock_kernel(); |
| return -EINVAL; |
| } |
| size = vma->vm_end - vma->vm_start; |
| |
| if (size != dmap->bytes_in_use) { |
| printk(KERN_WARNING "Sound: mmap() size = %ld. Should be %d\n", size, dmap->bytes_in_use); |
| } |
| if (remap_page_range(vma->vm_start, virt_to_phys(dmap->raw_buf), |
| vma->vm_end - vma->vm_start, |
| vma->vm_page_prot)) { |
| unlock_kernel(); |
| return -EAGAIN; |
| } |
| |
| dmap->mapping_flags |= DMA_MAP_MAPPED; |
| |
| if( audio_devs[dev]->d->mmap) |
| audio_devs[dev]->d->mmap(dev); |
| |
| memset(dmap->raw_buf, |
| dmap->neutral_byte, |
| dmap->bytes_in_use); |
| unlock_kernel(); |
| return 0; |
| } |
| |
| struct file_operations oss_sound_fops = { |
| owner: THIS_MODULE, |
| llseek: no_llseek, |
| read: sound_read, |
| write: sound_write, |
| poll: sound_poll, |
| ioctl: sound_ioctl, |
| mmap: sound_mmap, |
| open: sound_open, |
| release: sound_release, |
| }; |
| |
| /* |
| * Create the required special subdevices |
| */ |
| |
| static int create_special_devices(void) |
| { |
| int seq1,seq2; |
| seq1=register_sound_special(&oss_sound_fops, 1); |
| if(seq1==-1) |
| goto bad; |
| seq2=register_sound_special(&oss_sound_fops, 8); |
| if(seq2!=-1) |
| return 0; |
| unregister_sound_special(1); |
| bad: |
| return -1; |
| } |
| |
| |
| /* These device names follow the official Linux device list, |
| * Documentation/devices.txt. Let us know if there are other |
| * common names we should support for compatibility. |
| * Only those devices not created by the generic code in sound_core.c are |
| * registered here. |
| */ |
| static const struct { |
| unsigned short minor; |
| char *name; |
| umode_t mode; |
| int *num; |
| } dev_list[] = { /* list of minor devices */ |
| /* seems to be some confusion here -- this device is not in the device list */ |
| {SND_DEV_DSP16, "dspW", S_IWUGO | S_IRUSR | S_IRGRP, |
| &num_audiodevs}, |
| {SND_DEV_AUDIO, "audio", S_IWUGO | S_IRUSR | S_IRGRP, |
| &num_audiodevs}, |
| }; |
| |
| static char * |
| soundcard_make_name(char *buf, char *name, int idx) { |
| if (idx==0) |
| sprintf(buf, "sound/%s", name); |
| else |
| sprintf(buf, "sound/%s%d", name, idx); |
| return buf; |
| } |
| |
| /* Register/unregister audio entries */ |
| static void soundcard_register_devfs (int do_register) |
| { |
| char name_buf[32]; |
| int i, j, num; |
| |
| for (i = 0; i < sizeof (dev_list) / sizeof *dev_list; i++) { |
| num = (dev_list[i].num == NULL) ? 0 : *dev_list[i].num; |
| for (j = 0; j < num || j == 0; j++) { |
| soundcard_make_name (name_buf, dev_list[i].name, j); |
| if (do_register) |
| devfs_register (NULL, name_buf, DEVFS_FL_NONE, |
| SOUND_MAJOR, dev_list[i].minor+ (j* 0x10), |
| S_IFCHR | dev_list[i].mode, |
| &oss_sound_fops, NULL); |
| else { |
| devfs_handle_t de; |
| |
| de = devfs_find_handle (NULL, name_buf, 0, 0, |
| DEVFS_SPECIAL_CHR, 0); |
| devfs_unregister (de); |
| } |
| } |
| } |
| } |
| |
| |
| static int dmabuf = 0; |
| static int dmabug = 0; |
| |
| MODULE_PARM(dmabuf, "i"); |
| MODULE_PARM(dmabug, "i"); |
| |
| static int __init oss_init(void) |
| { |
| int err; |
| |
| /* drag in sound_syms.o */ |
| { |
| extern char sound_syms_symbol; |
| sound_syms_symbol = 0; |
| } |
| |
| #ifdef CONFIG_PCI |
| if(dmabug) |
| isa_dma_bridge_buggy = dmabug; |
| #endif |
| |
| err = create_special_devices(); |
| if (err) { |
| printk(KERN_ERR "sound: driver already loaded/included in kernel\n"); |
| return err; |
| } |
| |
| /* Protecting the innocent */ |
| sound_dmap_flag = (dmabuf > 0 ? 1 : 0); |
| |
| soundcard_register_devfs(1); |
| |
| if (sound_nblocks >= 1024) |
| printk(KERN_ERR "Sound warning: Deallocation table was too small.\n"); |
| |
| return 0; |
| } |
| |
| static void __exit oss_cleanup(void) |
| { |
| int i; |
| |
| if (MOD_IN_USE) |
| return; |
| |
| soundcard_register_devfs (0); |
| |
| unregister_sound_special(1); |
| unregister_sound_special(8); |
| |
| sound_stop_timer(); |
| |
| sequencer_unload(); |
| |
| for (i = 0; i < MAX_DMA_CHANNELS; i++) |
| if (dma_alloc_map[i] != DMA_MAP_UNAVAIL) { |
| printk(KERN_ERR "Sound: Hmm, DMA%d was left allocated - fixed\n", i); |
| sound_free_dma(i); |
| } |
| |
| for (i = 0; i < sound_nblocks; i++) |
| vfree(sound_mem_blocks[i]); |
| |
| } |
| |
| module_init(oss_init); |
| module_exit(oss_cleanup); |
| MODULE_LICENSE("GPL"); |
| |
| |
| int sound_alloc_dma(int chn, char *deviceID) |
| { |
| int err; |
| |
| if ((err = request_dma(chn, deviceID)) != 0) |
| return err; |
| |
| dma_alloc_map[chn] = DMA_MAP_FREE; |
| |
| return 0; |
| } |
| |
| int sound_open_dma(int chn, char *deviceID) |
| { |
| unsigned long flags; |
| |
| if (!valid_dma(chn)) { |
| printk(KERN_ERR "sound_open_dma: Invalid DMA channel %d\n", chn); |
| return 1; |
| } |
| save_flags(flags); |
| cli(); |
| |
| if (dma_alloc_map[chn] != DMA_MAP_FREE) { |
| printk("sound_open_dma: DMA channel %d busy or not allocated (%d)\n", chn, dma_alloc_map[chn]); |
| restore_flags(flags); |
| return 1; |
| } |
| dma_alloc_map[chn] = DMA_MAP_BUSY; |
| restore_flags(flags); |
| return 0; |
| } |
| |
| void sound_free_dma(int chn) |
| { |
| if (dma_alloc_map[chn] == DMA_MAP_UNAVAIL) { |
| /* printk( "sound_free_dma: Bad access to DMA channel %d\n", chn); */ |
| return; |
| } |
| free_dma(chn); |
| dma_alloc_map[chn] = DMA_MAP_UNAVAIL; |
| } |
| |
| void sound_close_dma(int chn) |
| { |
| unsigned long flags; |
| |
| save_flags(flags); |
| cli(); |
| |
| if (dma_alloc_map[chn] != DMA_MAP_BUSY) { |
| printk(KERN_ERR "sound_close_dma: Bad access to DMA channel %d\n", chn); |
| restore_flags(flags); |
| return; |
| } |
| dma_alloc_map[chn] = DMA_MAP_FREE; |
| restore_flags(flags); |
| } |
| |
| static void do_sequencer_timer(unsigned long dummy) |
| { |
| sequencer_timer(0); |
| } |
| |
| |
| static struct timer_list seq_timer = |
| {function: do_sequencer_timer}; |
| |
| void request_sound_timer(int count) |
| { |
| extern unsigned long seq_time; |
| |
| if (count < 0) { |
| seq_timer.expires = (-count) + jiffies; |
| add_timer(&seq_timer); |
| return; |
| } |
| count += seq_time; |
| |
| count -= jiffies; |
| |
| if (count < 1) |
| count = 1; |
| |
| seq_timer.expires = (count) + jiffies; |
| add_timer(&seq_timer); |
| } |
| |
| void sound_stop_timer(void) |
| { |
| del_timer(&seq_timer);; |
| } |
| |
| void conf_printf(char *name, struct address_info *hw_config) |
| { |
| #ifndef CONFIG_SOUND_TRACEINIT |
| return; |
| #else |
| printk("<%s> at 0x%03x", name, hw_config->io_base); |
| |
| if (hw_config->irq) |
| printk(" irq %d", (hw_config->irq > 0) ? hw_config->irq : -hw_config->irq); |
| |
| if (hw_config->dma != -1 || hw_config->dma2 != -1) |
| { |
| printk(" dma %d", hw_config->dma); |
| if (hw_config->dma2 != -1) |
| printk(",%d", hw_config->dma2); |
| } |
| printk("\n"); |
| #endif |
| } |
| |
| void conf_printf2(char *name, int base, int irq, int dma, int dma2) |
| { |
| #ifndef CONFIG_SOUND_TRACEINIT |
| return; |
| #else |
| printk("<%s> at 0x%03x", name, base); |
| |
| if (irq) |
| printk(" irq %d", (irq > 0) ? irq : -irq); |
| |
| if (dma != -1 || dma2 != -1) |
| { |
| printk(" dma %d", dma); |
| if (dma2 != -1) |
| printk(",%d", dma2); |
| } |
| printk("\n"); |
| #endif |
| } |