mirror of
https://github.com/torvalds/linux.git
synced 2024-11-24 13:11:40 +00:00
1da177e4c3
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!
375 lines
9.6 KiB
C
375 lines
9.6 KiB
C
/* -- ISP16 cdrom detection and configuration
|
|
*
|
|
* Copyright (c) 1995,1996 Eric van der Maarel <H.T.M.v.d.Maarel@marin.nl>
|
|
*
|
|
* Version 0.6
|
|
*
|
|
* History:
|
|
* 0.5 First release.
|
|
* Was included in the sjcd and optcd cdrom drivers.
|
|
* 0.6 First "stand-alone" version.
|
|
* Removed sound configuration.
|
|
* Added "module" support.
|
|
*
|
|
* 9 November 1999 -- Make kernel-parameter implementation work with 2.3.x
|
|
* Removed init_module & cleanup_module in favor of
|
|
* module_init & module_exit.
|
|
* Torben Mathiasen <tmm@image.dk>
|
|
*
|
|
* 19 June 2004 -- check_region() converted to request_region()
|
|
* and return statement cleanups.
|
|
* Jesper Juhl <juhl-lkml@dif.dk>
|
|
*
|
|
* Detect cdrom interface on ISP16 sound card.
|
|
* Configure cdrom interface.
|
|
*
|
|
* Algorithm for the card with OPTi 82C928 taken
|
|
* from the CDSETUP.SYS driver for MSDOS,
|
|
* by OPTi Computers, version 2.03.
|
|
* Algorithm for the card with OPTi 82C929 as communicated
|
|
* to me by Vadim Model and Leo Spiekman.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*
|
|
*/
|
|
|
|
#define ISP16_VERSION_MAJOR 0
|
|
#define ISP16_VERSION_MINOR 6
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/fs.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/string.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/init.h>
|
|
#include <asm/io.h>
|
|
#include "isp16.h"
|
|
|
|
static short isp16_detect(void);
|
|
static short isp16_c928__detect(void);
|
|
static short isp16_c929__detect(void);
|
|
static short isp16_cdi_config(int base, u_char drive_type, int irq,
|
|
int dma);
|
|
static short isp16_type; /* dependent on type of interface card */
|
|
static u_char isp16_ctrl;
|
|
static u_short isp16_enable_port;
|
|
|
|
static int isp16_cdrom_base = ISP16_CDROM_IO_BASE;
|
|
static int isp16_cdrom_irq = ISP16_CDROM_IRQ;
|
|
static int isp16_cdrom_dma = ISP16_CDROM_DMA;
|
|
static char *isp16_cdrom_type = ISP16_CDROM_TYPE;
|
|
|
|
module_param(isp16_cdrom_base, int, 0);
|
|
module_param(isp16_cdrom_irq, int, 0);
|
|
module_param(isp16_cdrom_dma, int, 0);
|
|
module_param(isp16_cdrom_type, charp, 0);
|
|
|
|
#define ISP16_IN(p) (outb(isp16_ctrl,ISP16_CTRL_PORT), inb(p))
|
|
#define ISP16_OUT(p,b) (outb(isp16_ctrl,ISP16_CTRL_PORT), outb(b,p))
|
|
|
|
#ifndef MODULE
|
|
|
|
static int
|
|
__init isp16_setup(char *str)
|
|
{
|
|
int ints[4];
|
|
|
|
(void) get_options(str, ARRAY_SIZE(ints), ints);
|
|
if (ints[0] > 0)
|
|
isp16_cdrom_base = ints[1];
|
|
if (ints[0] > 1)
|
|
isp16_cdrom_irq = ints[2];
|
|
if (ints[0] > 2)
|
|
isp16_cdrom_dma = ints[3];
|
|
if (str)
|
|
isp16_cdrom_type = str;
|
|
|
|
return 1;
|
|
}
|
|
|
|
__setup("isp16=", isp16_setup);
|
|
|
|
#endif /* MODULE */
|
|
|
|
/*
|
|
* ISP16 initialisation.
|
|
*
|
|
*/
|
|
static int __init isp16_init(void)
|
|
{
|
|
u_char expected_drive;
|
|
|
|
printk(KERN_INFO
|
|
"ISP16: configuration cdrom interface, version %d.%d.\n",
|
|
ISP16_VERSION_MAJOR, ISP16_VERSION_MINOR);
|
|
|
|
if (!strcmp(isp16_cdrom_type, "noisp16")) {
|
|
printk("ISP16: no cdrom interface configured.\n");
|
|
return 0;
|
|
}
|
|
|
|
if (!request_region(ISP16_IO_BASE, ISP16_IO_SIZE, "isp16")) {
|
|
printk("ISP16: i/o ports already in use.\n");
|
|
goto out;
|
|
}
|
|
|
|
if ((isp16_type = isp16_detect()) < 0) {
|
|
printk("ISP16: no cdrom interface found.\n");
|
|
goto cleanup_out;
|
|
}
|
|
|
|
printk(KERN_INFO
|
|
"ISP16: cdrom interface (with OPTi 82C92%d chip) detected.\n",
|
|
(isp16_type == 2) ? 9 : 8);
|
|
|
|
if (!strcmp(isp16_cdrom_type, "Sanyo"))
|
|
expected_drive =
|
|
(isp16_type ? ISP16_SANYO1 : ISP16_SANYO0);
|
|
else if (!strcmp(isp16_cdrom_type, "Sony"))
|
|
expected_drive = ISP16_SONY;
|
|
else if (!strcmp(isp16_cdrom_type, "Panasonic"))
|
|
expected_drive =
|
|
(isp16_type ? ISP16_PANASONIC1 : ISP16_PANASONIC0);
|
|
else if (!strcmp(isp16_cdrom_type, "Mitsumi"))
|
|
expected_drive = ISP16_MITSUMI;
|
|
else {
|
|
printk("ISP16: %s not supported by cdrom interface.\n",
|
|
isp16_cdrom_type);
|
|
goto cleanup_out;
|
|
}
|
|
|
|
if (isp16_cdi_config(isp16_cdrom_base, expected_drive,
|
|
isp16_cdrom_irq, isp16_cdrom_dma) < 0) {
|
|
printk
|
|
("ISP16: cdrom interface has not been properly configured.\n");
|
|
goto cleanup_out;
|
|
}
|
|
printk(KERN_INFO
|
|
"ISP16: cdrom interface set up with io base 0x%03X, irq %d, dma %d,"
|
|
" type %s.\n", isp16_cdrom_base, isp16_cdrom_irq,
|
|
isp16_cdrom_dma, isp16_cdrom_type);
|
|
return 0;
|
|
|
|
cleanup_out:
|
|
release_region(ISP16_IO_BASE, ISP16_IO_SIZE);
|
|
out:
|
|
return -EIO;
|
|
}
|
|
|
|
static short __init isp16_detect(void)
|
|
{
|
|
|
|
if (isp16_c929__detect() >= 0)
|
|
return 2;
|
|
else
|
|
return (isp16_c928__detect());
|
|
}
|
|
|
|
static short __init isp16_c928__detect(void)
|
|
{
|
|
u_char ctrl;
|
|
u_char enable_cdrom;
|
|
u_char io;
|
|
short i = -1;
|
|
|
|
isp16_ctrl = ISP16_C928__CTRL;
|
|
isp16_enable_port = ISP16_C928__ENABLE_PORT;
|
|
|
|
/* read' and write' are a special read and write, respectively */
|
|
|
|
/* read' ISP16_CTRL_PORT, clear last two bits and write' back the result */
|
|
ctrl = ISP16_IN(ISP16_CTRL_PORT) & 0xFC;
|
|
ISP16_OUT(ISP16_CTRL_PORT, ctrl);
|
|
|
|
/* read' 3,4 and 5-bit from the cdrom enable port */
|
|
enable_cdrom = ISP16_IN(ISP16_C928__ENABLE_PORT) & 0x38;
|
|
|
|
if (!(enable_cdrom & 0x20)) { /* 5-bit not set */
|
|
/* read' last 2 bits of ISP16_IO_SET_PORT */
|
|
io = ISP16_IN(ISP16_IO_SET_PORT) & 0x03;
|
|
if (((io & 0x01) << 1) == (io & 0x02)) { /* bits are the same */
|
|
if (io == 0) { /* ...the same and 0 */
|
|
i = 0;
|
|
enable_cdrom |= 0x20;
|
|
} else { /* ...the same and 1 *//* my card, first time 'round */
|
|
i = 1;
|
|
enable_cdrom |= 0x28;
|
|
}
|
|
ISP16_OUT(ISP16_C928__ENABLE_PORT, enable_cdrom);
|
|
} else { /* bits are not the same */
|
|
ISP16_OUT(ISP16_CTRL_PORT, ctrl);
|
|
return i; /* -> not detected: possibly incorrect conclusion */
|
|
}
|
|
} else if (enable_cdrom == 0x20)
|
|
i = 0;
|
|
else if (enable_cdrom == 0x28) /* my card, already initialised */
|
|
i = 1;
|
|
|
|
ISP16_OUT(ISP16_CTRL_PORT, ctrl);
|
|
|
|
return i;
|
|
}
|
|
|
|
static short __init isp16_c929__detect(void)
|
|
{
|
|
u_char ctrl;
|
|
u_char tmp;
|
|
|
|
isp16_ctrl = ISP16_C929__CTRL;
|
|
isp16_enable_port = ISP16_C929__ENABLE_PORT;
|
|
|
|
/* read' and write' are a special read and write, respectively */
|
|
|
|
/* read' ISP16_CTRL_PORT and save */
|
|
ctrl = ISP16_IN(ISP16_CTRL_PORT);
|
|
|
|
/* write' zero to the ctrl port and get response */
|
|
ISP16_OUT(ISP16_CTRL_PORT, 0);
|
|
tmp = ISP16_IN(ISP16_CTRL_PORT);
|
|
|
|
if (tmp != 2) /* isp16 with 82C929 not detected */
|
|
return -1;
|
|
|
|
/* restore ctrl port value */
|
|
ISP16_OUT(ISP16_CTRL_PORT, ctrl);
|
|
|
|
return 2;
|
|
}
|
|
|
|
static short __init
|
|
isp16_cdi_config(int base, u_char drive_type, int irq, int dma)
|
|
{
|
|
u_char base_code;
|
|
u_char irq_code;
|
|
u_char dma_code;
|
|
u_char i;
|
|
|
|
if ((drive_type == ISP16_MITSUMI) && (dma != 0))
|
|
printk("ISP16: Mitsumi cdrom drive has no dma support.\n");
|
|
|
|
switch (base) {
|
|
case 0x340:
|
|
base_code = ISP16_BASE_340;
|
|
break;
|
|
case 0x330:
|
|
base_code = ISP16_BASE_330;
|
|
break;
|
|
case 0x360:
|
|
base_code = ISP16_BASE_360;
|
|
break;
|
|
case 0x320:
|
|
base_code = ISP16_BASE_320;
|
|
break;
|
|
default:
|
|
printk
|
|
("ISP16: base address 0x%03X not supported by cdrom interface.\n",
|
|
base);
|
|
return -1;
|
|
}
|
|
switch (irq) {
|
|
case 0:
|
|
irq_code = ISP16_IRQ_X;
|
|
break; /* disable irq */
|
|
case 5:
|
|
irq_code = ISP16_IRQ_5;
|
|
printk("ISP16: irq 5 shouldn't be used by cdrom interface,"
|
|
" due to possible conflicts with the sound card.\n");
|
|
break;
|
|
case 7:
|
|
irq_code = ISP16_IRQ_7;
|
|
printk("ISP16: irq 7 shouldn't be used by cdrom interface,"
|
|
" due to possible conflicts with the sound card.\n");
|
|
break;
|
|
case 3:
|
|
irq_code = ISP16_IRQ_3;
|
|
break;
|
|
case 9:
|
|
irq_code = ISP16_IRQ_9;
|
|
break;
|
|
case 10:
|
|
irq_code = ISP16_IRQ_10;
|
|
break;
|
|
case 11:
|
|
irq_code = ISP16_IRQ_11;
|
|
break;
|
|
default:
|
|
printk("ISP16: irq %d not supported by cdrom interface.\n",
|
|
irq);
|
|
return -1;
|
|
}
|
|
switch (dma) {
|
|
case 0:
|
|
dma_code = ISP16_DMA_X;
|
|
break; /* disable dma */
|
|
case 1:
|
|
printk("ISP16: dma 1 cannot be used by cdrom interface,"
|
|
" due to conflict with the sound card.\n");
|
|
return -1;
|
|
break;
|
|
case 3:
|
|
dma_code = ISP16_DMA_3;
|
|
break;
|
|
case 5:
|
|
dma_code = ISP16_DMA_5;
|
|
break;
|
|
case 6:
|
|
dma_code = ISP16_DMA_6;
|
|
break;
|
|
case 7:
|
|
dma_code = ISP16_DMA_7;
|
|
break;
|
|
default:
|
|
printk("ISP16: dma %d not supported by cdrom interface.\n",
|
|
dma);
|
|
return -1;
|
|
}
|
|
|
|
if (drive_type != ISP16_SONY && drive_type != ISP16_PANASONIC0 &&
|
|
drive_type != ISP16_PANASONIC1 && drive_type != ISP16_SANYO0 &&
|
|
drive_type != ISP16_SANYO1 && drive_type != ISP16_MITSUMI &&
|
|
drive_type != ISP16_DRIVE_X) {
|
|
printk
|
|
("ISP16: drive type (code 0x%02X) not supported by cdrom"
|
|
" interface.\n", drive_type);
|
|
return -1;
|
|
}
|
|
|
|
/* set type of interface */
|
|
i = ISP16_IN(ISP16_DRIVE_SET_PORT) & ISP16_DRIVE_SET_MASK; /* clear some bits */
|
|
ISP16_OUT(ISP16_DRIVE_SET_PORT, i | drive_type);
|
|
|
|
/* enable cdrom on interface with 82C929 chip */
|
|
if (isp16_type > 1)
|
|
ISP16_OUT(isp16_enable_port, ISP16_ENABLE_CDROM);
|
|
|
|
/* set base address, irq and dma */
|
|
i = ISP16_IN(ISP16_IO_SET_PORT) & ISP16_IO_SET_MASK; /* keep some bits */
|
|
ISP16_OUT(ISP16_IO_SET_PORT, i | base_code | irq_code | dma_code);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void __exit isp16_exit(void)
|
|
{
|
|
release_region(ISP16_IO_BASE, ISP16_IO_SIZE);
|
|
printk(KERN_INFO "ISP16: module released.\n");
|
|
}
|
|
|
|
module_init(isp16_init);
|
|
module_exit(isp16_exit);
|
|
|
|
MODULE_LICENSE("GPL");
|