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-rw-r--r--drivers/char/dsp56k.c578
1 files changed, 2 insertions, 576 deletions
diff --git a/drivers/char/dsp56k.c b/drivers/char/dsp56k.c
index dd035d58c..ef97f7255 100644
--- a/drivers/char/dsp56k.c
+++ b/drivers/char/dsp56k.c
@@ -34,6 +34,7 @@
#include <linux/delay.h> /* guess what */
#include <linux/fs.h>
#include <linux/mm.h>
+#include <linux/init.h>
#include <asm/segment.h>
#include <asm/atarihw.h>
@@ -529,582 +530,7 @@ static struct file_operations dsp56k_fops = {
static int init_error = 0;
-void dsp56k_init(void)
-{
- if(!ATARIHW_PRESENT(DSP56K)) {
- init_error = 1;
- printk("DSP56k driver: Hardware not present\n");
- return;
- }
-
-#ifndef MODULE
- if(register_chrdev(DSP56K_MAJOR, "dsp56k", &dsp56k_fops)) {
- printk("DSP56k driver: Unable to register driver\n");
- return;
- }
-#endif /* !MODULE */
-
- dsp56k.in_use = 0;
-
- printk("DSP56k driver installed\n");
-}
-
-#ifdef MODULE
-int init_module(void)
-{
- int r;
-
- init_error = 0;
- dsp56k_init();
- if(init_error)
- return -EPERM;
-
- r = register_chrdev(DSP56K_MAJOR, "dsp56k", &dsp56k_fops);
- if(r) {
- printk("DSP56k driver: Unable to register driver\n");
- return r;
- }
-
- return 0;
-}
-
-void cleanup_module(void)
-{
- unregister_chrdev(DSP56K_MAJOR, "dsp56k");
-}
-#endif /* MODULE */
-/*
- * The DSP56001 Device Driver, saviour of the Free World(tm)
- *
- * Authors: Fredrik Noring <noring@lysator.liu.se>
- * lars brinkhoff <f93labr@dd.chalmers.se>
- * Tomas Berndtsson <tobe@lysator.liu.se>
- *
- * First version May 1996
- *
- * History:
- * 97-01-29 Tomas Berndtsson,
- * Integrated with Linux 2.1.21 kernel sources.
- * 97-02-15 Tomas Berndtsson,
- * Fixed for kernel 2.1.26
- *
- * BUGS:
- * Hmm... there must be something here :)
- *
- * Copyright (C) 1996,1997 Fredrik Noring, lars brinkhoff & Tomas Berndtsson
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file COPYING in the main directory of this archive
- * for more details.
- */
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/version.h>
-#include <linux/malloc.h> /* for kmalloc() and kfree() */
-#include <linux/sched.h> /* for struct wait_queue etc */
-#include <linux/major.h>
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/delay.h> /* guess what */
-#include <linux/fs.h>
-#include <linux/mm.h>
-
-#include <asm/segment.h>
-#include <asm/atarihw.h>
-#include <asm/traps.h>
-#include <asm/uaccess.h> /* For put_user and get_user */
-
-#include <asm/dsp56k.h>
-
-/* minor devices */
-#define DSP56K_DEV_56001 0 /* The only device so far */
-
-#define TIMEOUT 10 /* Host port timeout in number of tries */
-#define MAXIO 2048 /* Maximum number of words before sleep */
-#define DSP56K_MAX_BINARY_LENGTH (3*64*1024)
-
-#define DSP56K_TX_INT_ON dsp56k_host_interface.icr |= DSP56K_ICR_TREQ
-#define DSP56K_RX_INT_ON dsp56k_host_interface.icr |= DSP56K_ICR_RREQ
-#define DSP56K_TX_INT_OFF dsp56k_host_interface.icr &= ~DSP56K_ICR_TREQ
-#define DSP56K_RX_INT_OFF dsp56k_host_interface.icr &= ~DSP56K_ICR_RREQ
-
-#define DSP56K_TRANSMIT (dsp56k_host_interface.isr & DSP56K_ISR_TXDE)
-#define DSP56K_RECEIVE (dsp56k_host_interface.isr & DSP56K_ISR_RXDF)
-
-#define max(a,b) ((a) > (b) ? (a) : (b))
-#define min(a,b) ((a) < (b) ? (a) : (b))
-
-#define wait_some(n) \
-{ \
- current->state = TASK_INTERRUPTIBLE; \
- current->timeout = jiffies + n; \
- schedule(); \
-}
-
-#define handshake(count, maxio, timeout, ENABLE, f) \
-{ \
- long i, t, m; \
- while (count > 0) { \
- m = min(count, maxio); \
- for (i = 0; i < m; i++) { \
- for (t = 0; t < timeout && !ENABLE; t++) \
- wait_some(2); \
- if(!ENABLE) \
- return -EIO; \
- f; \
- } \
- count -= m; \
- if (m == maxio) wait_some(2); \
- } \
-}
-
-#define tx_wait(n) \
-{ \
- int t; \
- for(t = 0; t < n && !DSP56K_TRANSMIT; t++) \
- wait_some(1); \
- if(!DSP56K_TRANSMIT) { \
- return -EIO; \
- } \
-}
-
-#define rx_wait(n) \
-{ \
- int t; \
- for(t = 0; t < n && !DSP56K_RECEIVE; t++) \
- wait_some(1); \
- if(!DSP56K_RECEIVE) { \
- return -EIO; \
- } \
-}
-
-/* DSP56001 bootstrap code */
-static char bootstrap[] = {
- 0x0c, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x60, 0xf4, 0x00, 0x00, 0x00, 0x4f, 0x61, 0xf4,
- 0x00, 0x00, 0x7e, 0xa9, 0x06, 0x2e, 0x80, 0x00, 0x00, 0x47,
- 0x07, 0xd8, 0x84, 0x07, 0x59, 0x84, 0x08, 0xf4, 0xa8, 0x00,
- 0x00, 0x04, 0x08, 0xf4, 0xbf, 0x00, 0x0c, 0x00, 0x00, 0xfe,
- 0xb8, 0x0a, 0xf0, 0x80, 0x00, 0x7e, 0xa9, 0x08, 0xf4, 0xa0,
- 0x00, 0x00, 0x01, 0x08, 0xf4, 0xbe, 0x00, 0x00, 0x00, 0x0a,
- 0xa9, 0x80, 0x00, 0x7e, 0xad, 0x08, 0x4e, 0x2b, 0x44, 0xf4,
- 0x00, 0x00, 0x00, 0x03, 0x44, 0xf4, 0x45, 0x00, 0x00, 0x01,
- 0x0e, 0xa0, 0x00, 0x0a, 0xa9, 0x80, 0x00, 0x7e, 0xb5, 0x08,
- 0x50, 0x2b, 0x0a, 0xa9, 0x80, 0x00, 0x7e, 0xb8, 0x08, 0x46,
- 0x2b, 0x44, 0xf4, 0x45, 0x00, 0x00, 0x02, 0x0a, 0xf0, 0xaa,
- 0x00, 0x7e, 0xc9, 0x20, 0x00, 0x45, 0x0a, 0xf0, 0xaa, 0x00,
- 0x7e, 0xd0, 0x06, 0xc6, 0x00, 0x00, 0x7e, 0xc6, 0x0a, 0xa9,
- 0x80, 0x00, 0x7e, 0xc4, 0x08, 0x58, 0x6b, 0x0a, 0xf0, 0x80,
- 0x00, 0x7e, 0xad, 0x06, 0xc6, 0x00, 0x00, 0x7e, 0xcd, 0x0a,
- 0xa9, 0x80, 0x00, 0x7e, 0xcb, 0x08, 0x58, 0xab, 0x0a, 0xf0,
- 0x80, 0x00, 0x7e, 0xad, 0x06, 0xc6, 0x00, 0x00, 0x7e, 0xd4,
- 0x0a, 0xa9, 0x80, 0x00, 0x7e, 0xd2, 0x08, 0x58, 0xeb, 0x0a,
- 0xf0, 0x80, 0x00, 0x7e, 0xad};
-static int sizeof_bootstrap = 375;
-
-
-static struct dsp56k_device {
- int in_use;
- long maxio, timeout;
- int tx_wsize, rx_wsize;
-} dsp56k;
-
-static int dsp56k_reset(void)
-{
- u_char status;
-
- /* Power down the DSP */
- sound_ym.rd_data_reg_sel = 14;
- status = sound_ym.rd_data_reg_sel & 0xef;
- sound_ym.wd_data = status;
- sound_ym.wd_data = status | 0x10;
-
- udelay(10);
-
- /* Power up the DSP */
- sound_ym.rd_data_reg_sel = 14;
- sound_ym.wd_data = sound_ym.rd_data_reg_sel & 0xef;
-
- return 0;
-}
-
-static int dsp56k_upload(u_char *bin, int len)
-{
- int i;
- u_char *p;
-
- dsp56k_reset();
-
- p = bootstrap;
- for (i = 0; i < sizeof_bootstrap/3; i++) {
- /* tx_wait(10); */
- dsp56k_host_interface.data.b[1] = *p++;
- dsp56k_host_interface.data.b[2] = *p++;
- dsp56k_host_interface.data.b[3] = *p++;
- }
- for (; i < 512; i++) {
- /* tx_wait(10); */
- dsp56k_host_interface.data.b[1] = 0;
- dsp56k_host_interface.data.b[2] = 0;
- dsp56k_host_interface.data.b[3] = 0;
- }
-
- for (i = 0; i < len; i++) {
- tx_wait(10);
- get_user(dsp56k_host_interface.data.b[1], bin++);
- get_user(dsp56k_host_interface.data.b[2], bin++);
- get_user(dsp56k_host_interface.data.b[3], bin++);
- }
-
- tx_wait(10);
- dsp56k_host_interface.data.l = 3; /* Magic execute */
-
- return 0;
-}
-
-static long dsp56k_read(struct inode *inode, struct file *file,
- char *buf, unsigned long count)
-{
- int dev = MINOR(inode->i_rdev) & 0x0f;
-
- switch(dev)
- {
- case DSP56K_DEV_56001:
- {
-
- long n;
-
- /* Don't do anything if nothing is to be done */
- if (!count) return 0;
-
- n = 0;
- switch (dsp56k.rx_wsize) {
- case 1: /* 8 bit */
- {
- handshake(count, dsp56k.maxio, dsp56k.timeout, DSP56K_RECEIVE,
- put_user(dsp56k_host_interface.data.b[3], buf+n++));
- return n;
- }
- case 2: /* 16 bit */
- {
- short *data;
-
- count /= 2;
- data = (short*) buf;
- handshake(count, dsp56k.maxio, dsp56k.timeout, DSP56K_RECEIVE,
- put_user(dsp56k_host_interface.data.w[1], data+n++));
- return 2*n;
- }
- case 3: /* 24 bit */
- {
- count /= 3;
- handshake(count, dsp56k.maxio, dsp56k.timeout, DSP56K_RECEIVE,
- put_user(dsp56k_host_interface.data.b[1], buf+n++);
- put_user(dsp56k_host_interface.data.b[2], buf+n++);
- put_user(dsp56k_host_interface.data.b[3], buf+n++));
- return 3*n;
- }
- case 4: /* 32 bit */
- {
- long *data;
-
- count /= 4;
- data = (long*) buf;
- handshake(count, dsp56k.maxio, dsp56k.timeout, DSP56K_RECEIVE,
- put_user(dsp56k_host_interface.data.l, data+n++));
- return 4*n;
- }
- }
- return -EFAULT;
- }
-
- default:
- printk("DSP56k driver: Unknown minor device: %d\n", dev);
- return -ENXIO;
- }
-}
-
-static long dsp56k_write(struct inode *inode, struct file *file,
- const char *buf, unsigned long count)
-{
- int dev = MINOR(inode->i_rdev) & 0x0f;
-
- switch(dev)
- {
- case DSP56K_DEV_56001:
- {
- long n;
-
- /* Don't do anything if nothing is to be done */
- if (!count) return 0;
-
- n = 0;
- switch (dsp56k.tx_wsize) {
- case 1: /* 8 bit */
- {
- handshake(count, dsp56k.maxio, dsp56k.timeout, DSP56K_TRANSMIT,
- get_user(dsp56k_host_interface.data.b[3], buf+n++));
- return n;
- }
- case 2: /* 16 bit */
- {
- short *data;
-
- count /= 2;
- data = (short*) buf;
- handshake(count, dsp56k.maxio, dsp56k.timeout, DSP56K_TRANSMIT,
- get_user(dsp56k_host_interface.data.w[1], data+n++));
- return 2*n;
- }
- case 3: /* 24 bit */
- {
- count /= 3;
- handshake(count, dsp56k.maxio, dsp56k.timeout, DSP56K_TRANSMIT,
- get_user(dsp56k_host_interface.data.b[1], buf+n++);
- get_user(dsp56k_host_interface.data.b[2], buf+n++);
- get_user(dsp56k_host_interface.data.b[3], buf+n++));
- return 3*n;
- }
- case 4: /* 32 bit */
- {
- long *data;
-
- count /= 4;
- data = (long*) buf;
- handshake(count, dsp56k.maxio, dsp56k.timeout, DSP56K_TRANSMIT,
- get_user(dsp56k_host_interface.data.l, data+n++));
- return 4*n;
- }
- }
-
- return -EFAULT;
- }
- default:
- printk("DSP56k driver: Unknown minor device: %d\n", dev);
- return -ENXIO;
- }
-}
-
-static int dsp56k_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- int dev = MINOR(inode->i_rdev) & 0x0f;
-
- switch(dev)
- {
- case DSP56K_DEV_56001:
-
- switch(cmd) {
- case DSP56K_UPLOAD:
- {
- char *bin;
- int r, len;
- struct dsp56k_upload *binary = (struct dsp56k_upload *) arg;
-
- if(get_user(len, &binary->len) < 0)
- return -EFAULT;
- if(get_user(bin, &binary->bin) < 0)
- return -EFAULT;
-
- if (len == 0) {
- return -EINVAL; /* nothing to upload?!? */
- }
- if (len > DSP56K_MAX_BINARY_LENGTH) {
- return -EINVAL;
- }
-
- r = dsp56k_upload(bin, len);
- if (r < 0) {
- return r;
- }
-
- break;
- }
- case DSP56K_SET_TX_WSIZE:
- if (arg > 4 || arg < 1)
- return -EINVAL;
- dsp56k.tx_wsize = (int) arg;
- break;
- case DSP56K_SET_RX_WSIZE:
- if (arg > 4 || arg < 1)
- return -EINVAL;
- dsp56k.rx_wsize = (int) arg;
- break;
- case DSP56K_HOST_FLAGS:
- {
- int dir, out, status;
- struct dsp56k_host_flags *hf = (struct dsp56k_host_flags*) arg;
-
- if(get_user(dir, &hf->dir) < 0)
- return -EFAULT;
- if(get_user(out, &hf->out) < 0)
- return -EFAULT;
-
- if ((dir & 0x1) && (out & 0x1))
- dsp56k_host_interface.icr |= DSP56K_ICR_HF0;
- else if (dir & 0x1)
- dsp56k_host_interface.icr &= ~DSP56K_ICR_HF0;
- if ((dir & 0x2) && (out & 0x2))
- dsp56k_host_interface.icr |= DSP56K_ICR_HF1;
- else if (dir & 0x2)
- dsp56k_host_interface.icr &= ~DSP56K_ICR_HF1;
-
- status = 0;
- if (dsp56k_host_interface.icr & DSP56K_ICR_HF0) status |= 0x1;
- if (dsp56k_host_interface.icr & DSP56K_ICR_HF1) status |= 0x2;
- if (dsp56k_host_interface.isr & DSP56K_ISR_HF2) status |= 0x4;
- if (dsp56k_host_interface.isr & DSP56K_ISR_HF3) status |= 0x8;
-
- if(put_user(status, &hf->status) < 0)
- return -EFAULT;
- break;
- }
- case DSP56K_HOST_CMD:
- if (arg > 31 || arg < 0)
- return -EINVAL;
- dsp56k_host_interface.cvr = (u_char)((arg & DSP56K_CVR_HV_MASK) |
- DSP56K_CVR_HC);
- break;
- default:
- return -EINVAL;
- }
- return 0;
-
- default:
- printk("DSP56k driver: Unknown minor device: %d\n", dev);
- return -ENXIO;
- }
-}
-
-/* As of 2.1.26 this should be dsp56k_poll,
- * but how do I then check device minor number?
- * Do I need this function at all???
- */
-#ifdef 0
-static int dsp56k_select(struct inode *inode, struct file *file, int sel_type,
- select_table *wait)
-{
- int dev = MINOR(inode->i_rdev) & 0x0f;
-
- switch(dev)
- {
- case DSP56K_DEV_56001:
-
- switch(sel_type) {
- case SEL_IN: /* read */
- return 1;
- case SEL_OUT: /* write */
- return 1;
- default:
- return 1;
- }
-
- default:
- printk("DSP56k driver: Unknown minor device: %d\n", dev);
- return -ENXIO;
- }
-}
-#endif
-
-static int dsp56k_open(struct inode *inode, struct file *file)
-{
- int dev = MINOR(inode->i_rdev) & 0x0f;
-
- switch(dev)
- {
- case DSP56K_DEV_56001:
-
- if (dsp56k.in_use)
- return -EBUSY;
-
- dsp56k.in_use = 1;
- dsp56k.timeout = TIMEOUT;
- dsp56k.maxio = MAXIO;
- dsp56k.rx_wsize = dsp56k.tx_wsize = 4;
-
- DSP56K_TX_INT_OFF;
- DSP56K_RX_INT_OFF;
-
- /* Zero host flags */
- dsp56k_host_interface.icr &= ~DSP56K_ICR_HF0;
- dsp56k_host_interface.icr &= ~DSP56K_ICR_HF1;
-
- break;
-
- default:
- printk("DSP56k driver: Unknown minor device: %d\n", dev);
- return -ENXIO;
- }
-
-#ifdef MODULE
- MOD_INC_USE_COUNT;
-#endif /* MODULE */
-
- return 0;
-}
-
-static void dsp56k_release(struct inode *inode, struct file *file)
-{
- int dev = MINOR(inode->i_rdev) & 0x0f;
-
- switch(dev)
- {
- case DSP56K_DEV_56001:
-
- dsp56k.in_use = 0;
-
- break;
- default:
- printk("DSP56k driver: Unknown minor device: %d\n", dev);
- return;
- }
-
-#ifdef MODULE
- MOD_DEC_USE_COUNT;
-#endif /* MODULE */
-}
-
-static struct file_operations dsp56k_fops = {
- NULL, /* no special dsp56k_lseek */
- dsp56k_read,
- dsp56k_write,
- NULL, /* no special dsp56k_readdir */
- NULL, /* dsp56k_poll? */
- dsp56k_ioctl,
- NULL, /* no special dsp56k_mmap */
- dsp56k_open,
- dsp56k_release,
- NULL, /* no special dsp56k_fsync */
- NULL, /* no special dsp56k_fasync */
- NULL, /* no special dsp56k_check_media_change */
- NULL /* no special dsp56k_revalidate */
-};
-
-
-/****** Init and module functions ******/
-
-static int init_error = 0;
-
-void dsp56k_init(void)
+__initfunc(void dsp56k_init(void))
{
if(!ATARIHW_PRESENT(DSP56K)) {
init_error = 1;
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