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path: root/drivers/cdrom/isp16.c
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Diffstat (limited to 'drivers/cdrom/isp16.c')
-rw-r--r--drivers/cdrom/isp16.c374
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");
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-24 12:38:40 +0000