1 files changed, 374 insertions, 0 deletions

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 <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");