diff options
Diffstat (limited to 'sys/i386/isa/sound/dsp.c')
| -rw-r--r-- | sys/i386/isa/sound/dsp.c | 270 |
1 files changed, 0 insertions, 270 deletions
diff --git a/sys/i386/isa/sound/dsp.c b/sys/i386/isa/sound/dsp.c deleted file mode 100644 index fca931afab3e..000000000000 --- a/sys/i386/isa/sound/dsp.c +++ /dev/null @@ -1,270 +0,0 @@ -/* - * linux/kernel/chr_drv/sound/dsp.c - * - * Device file manager for /dev/dsp - * - * Copyright by Hannu Savolainen 1993 - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. 2. - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY - * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR - * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER - * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - */ - -#include "sound_config.h" - -#ifdef CONFIGURE_SOUNDCARD - -#ifndef EXCLUDE_AUDIO - -#define ON 1 -#define OFF 0 - -static int wr_buff_no[MAX_DSP_DEV]; /* != -1, if there is a - * incomplete output block */ -static int wr_buff_size[MAX_DSP_DEV], wr_buf_ptr[MAX_DSP_DEV]; -static char *wr_dma_buf[MAX_DSP_DEV]; - -int -dsp_open (int dev, struct fileinfo *file, int bits) -{ - int mode; - int ret; - - dev = dev >> 4; - mode = file->mode & O_ACCMODE; - - if ((ret = DMAbuf_open (dev, mode)) < 0) - return ret; - - if (DMAbuf_ioctl (dev, SNDCTL_DSP_SAMPLESIZE, bits, 1) != bits) - { - dsp_release (dev, file); - return RET_ERROR (ENXIO); - } - - wr_buff_no[dev] = -1; - - return ret; -} - -void -dsp_release (int dev, struct fileinfo *file) -{ - int mode; - - dev = dev >> 4; - mode = file->mode & O_ACCMODE; - - if (wr_buff_no[dev] >= 0) - { - DMAbuf_start_output (dev, wr_buff_no[dev], wr_buf_ptr[dev]); - - wr_buff_no[dev] = -1; - } - - DMAbuf_release (dev, mode); -} - - -int -dsp_write (int dev, struct fileinfo *file, snd_rw_buf * buf, int count) -{ - int c, p, l; - int err; - - dev = dev >> 4; - - p = 0; - c = count; - - if (!count) /* Flush output */ - { - if (wr_buff_no[dev] >= 0) - { - DMAbuf_start_output (dev, wr_buff_no[dev], wr_buf_ptr[dev]); - - wr_buff_no[dev] = -1; - } - return 0; - } - - while (c) - { /* Perform output blocking */ - if (wr_buff_no[dev] < 0) /* There is no incomplete buffers */ - { - if ((wr_buff_no[dev] = DMAbuf_getwrbuffer (dev, &wr_dma_buf[dev], - &wr_buff_size[dev])) < 0) - return wr_buff_no[dev]; - wr_buf_ptr[dev] = 0; - } - - l = c; - if (l > (wr_buff_size[dev] - wr_buf_ptr[dev])) - l = (wr_buff_size[dev] - wr_buf_ptr[dev]); - - if (!dsp_devs[dev]->copy_from_user) - { /* No device specific copy routine */ - COPY_FROM_USER (&wr_dma_buf[dev][wr_buf_ptr[dev]], buf, p, l); - } - else - dsp_devs[dev]->copy_from_user (dev, - wr_dma_buf[dev], wr_buf_ptr[dev], buf, p, l); - - c -= l; - p += l; - wr_buf_ptr[dev] += l; - - if (wr_buf_ptr[dev] >= wr_buff_size[dev]) - { - if ((err = DMAbuf_start_output (dev, wr_buff_no[dev], wr_buf_ptr[dev])) < 0) - return err; - - wr_buff_no[dev] = -1; - } - - } - - return count; -} - - -int -dsp_read (int dev, struct fileinfo *file, snd_rw_buf * buf, int count) -{ - int c, p, l; - char *dmabuf; - int buff_no; - - dev = dev >> 4; - p = 0; - c = count; - - while (c) - { - if ((buff_no = DMAbuf_getrdbuffer (dev, &dmabuf, &l)) < 0) - return buff_no; - - if (l > c) - l = c; - - /* Insert any local processing here. */ - - COPY_TO_USER (buf, 0, dmabuf, l); - - DMAbuf_rmchars (dev, buff_no, l); - - p += l; - c -= l; - } - - return count - c; -} - -int -dsp_ioctl (int dev, struct fileinfo *file, - unsigned int cmd, unsigned int arg) -{ - - dev = dev >> 4; - - switch (cmd) - { - case SNDCTL_DSP_SYNC: - if (wr_buff_no[dev] >= 0) - { - DMAbuf_start_output (dev, wr_buff_no[dev], wr_buf_ptr[dev]); - - wr_buff_no[dev] = -1; - } - return DMAbuf_ioctl (dev, cmd, arg, 0); - break; - - case SNDCTL_DSP_POST: - if (wr_buff_no[dev] >= 0) - { - DMAbuf_start_output (dev, wr_buff_no[dev], wr_buf_ptr[dev]); - - wr_buff_no[dev] = -1; - } - return 0; - break; - - case SNDCTL_DSP_RESET: - wr_buff_no[dev] = -1; - return DMAbuf_ioctl (dev, cmd, arg, 0); - break; - - default: - return DMAbuf_ioctl (dev, cmd, arg, 0); - } -} - -long -dsp_init (long mem_start) -{ - return mem_start; -} - -#else -/* Stub version */ -int -dsp_read (int dev, struct fileinfo *file, snd_rw_buf * buf, int count) -{ - return RET_ERROR (EIO); -} - -int -dsp_write (int dev, struct fileinfo *file, snd_rw_buf * buf, int count) -{ - return RET_ERROR (EIO); -} - -int -dsp_open (int dev, struct fileinfo *file, int bits) -{ - return RET_ERROR (ENXIO); -} - -void -dsp_release (int dev, struct fileinfo *file) - { - }; -int -dsp_ioctl (int dev, struct fileinfo *file, - unsigned int cmd, unsigned int arg) -{ - return RET_ERROR (EIO); -} - -int -dsp_lseek (int dev, struct fileinfo *file, off_t offset, int orig) -{ - return RET_ERROR (EIO); -} - -long -dsp_init (long mem_start) -{ - return mem_start; -} - -#endif - -#endif |