From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 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! --- drivers/cdrom/isp16.c | 374 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 374 insertions(+) create mode 100644 drivers/cdrom/isp16.c (limited to 'drivers/cdrom/isp16.c') diff --git a/drivers/cdrom/isp16.c b/drivers/cdrom/isp16.c new file mode 100644 index 000000000000..8e68d858ce64 --- /dev/null +++ b/drivers/cdrom/isp16.c @@ -0,0 +1,374 @@ +/* -- ISP16 cdrom detection and configuration + * + * Copyright (c) 1995,1996 Eric van der Maarel + * + * 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 + * + * 19 June 2004 -- check_region() converted to request_region() + * and return statement cleanups. + * Jesper Juhl + * + * 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 + +#include +#include +#include +#include +#include +#include +#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"); -- cgit v1.2.3