patch-1.3.58 linux/drivers/cdrom/optcd_isp16.h

• Lines: 338
• Date: Thu Jan 18 06:22:13 1996
• Orig file: v1.3.57/linux/drivers/cdrom/optcd_isp16.h
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v1.3.57/linux/drivers/cdrom/optcd_isp16.h linux/drivers/cdrom/optcd_isp16.h
@@ -0,0 +1,337 @@
+/* linux/drivers/cdrom/optcd_isp16.h - ISP16 CDROM interface configuration
+   $Id: optcd_isp16.h,v 1.3 1996/01/15 18:43:11 root Exp root $
+
+   Extracts from linux/drivers/cdrom/sjcd.c
+   For copyrights see linux/drivers/cdrom/optcd.c
+*/
+
+
+/* Some (Media)Magic */
+/* define types of drive the interface on an ISP16 card may be looking at */
+#define ISP16_DRIVE_X 0x00
+#define ISP16_SONY  0x02
+#define ISP16_PANASONIC0 0x02
+#define ISP16_SANYO0 0x02
+#define ISP16_MITSUMI  0x04
+#define ISP16_PANASONIC1 0x06
+#define ISP16_SANYO1 0x06
+#define ISP16_DRIVE_NOT_USED 0x08  /* not used */
+#define ISP16_DRIVE_SET_MASK 0xF1  /* don't change 0-bit or 4-7-bits*/
+/* ...for port */
+#define ISP16_DRIVE_SET_PORT 0xF8D
+/* set io parameters */
+#define ISP16_BASE_340  0x00
+#define ISP16_BASE_330  0x40
+#define ISP16_BASE_360  0x80
+#define ISP16_BASE_320  0xC0
+#define ISP16_IRQ_X  0x00
+#define ISP16_IRQ_5  0x04  /* shouldn't be used due to soundcard conflicts */
+#define ISP16_IRQ_7  0x08  /* shouldn't be used due to soundcard conflicts */
+#define ISP16_IRQ_3  0x0C
+#define ISP16_IRQ_9  0x10
+#define ISP16_IRQ_10  0x14
+#define ISP16_IRQ_11  0x18
+#define ISP16_DMA_X  0x03
+#define ISP16_DMA_3  0x00
+#define ISP16_DMA_5  0x00
+#define ISP16_DMA_6  0x01
+#define ISP16_DMA_7  0x02
+#define ISP16_IO_SET_MASK  0x20  /* don't change 5-bit */
+/* ...for port */
+#define ISP16_IO_SET_PORT  0xF8E
+/* enable the card */
+#define ISP16_C928__ENABLE_PORT  0xF90  /* ISP16 with OPTi 82C928 chip */
+#define ISP16_C929__ENABLE_PORT  0xF91  /* ISP16 with OPTi 82C929 chip */
+#define ISP16_ENABLE_CDROM  0x80  /* seven bit */
+
+/* the magic stuff */
+#define ISP16_CTRL_PORT  0xF8F
+#define ISP16_C928__CTRL  0xE2  /* ISP16 with OPTi 82C928 chip */
+#define ISP16_C929__CTRL  0xE3  /* ISP16 with OPTi 82C929 chip */
+
+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 void isp16_sound_config( void );
+static short isp16_type; /* dependent on type of interface card */
+static u_char isp16_ctrl;
+static u_short isp16_enable_port;
+
+/*static int sjcd_present = 0;*/
+static u_char special_mask = 0;
+
+static unsigned char defaults[ 16 ] = {
+  0xA8, 0xA8, 0x18, 0x18, 0x18, 0x18, 0x8E, 0x8E,
+  0x03, 0x00, 0x02, 0x00, 0x0A, 0x00, 0x00, 0x00
+};
+/* ------------- */
+/*
+ * -- ISP16 detection and configuration
+ *
+ *    Copyright (c) 1995, Eric van der Maarel <maarel@marin.nl>
+ *
+ *    Version 0.5
+ *
+ *    Detect cdrom interface on ISP16 soundcard.
+ *    Configure cdrom interface.
+ *    Configure sound 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.
+ *
+ *    Use, modifification or redistribution of this software is
+ *    allowed under the terms of the GPL.
+ *
+ */
+
+
+#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))
+
+static short
+isp16_detect(void)
+{
+
+  if ( !( isp16_c929__detect() < 0 ) )
+    return(2);
+  else
+    return( isp16_c928__detect() );
+}
+
+static short
+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
+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
+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( "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( "Base address 0x%03X not supported by cdrom interface on ISP16.\n", base );
+    return(-1);
+  }
+  switch (irq) {
+  case 0: irq_code = ISP16_IRQ_X; break; /* disable irq */
+  case 5: irq_code = ISP16_IRQ_5;
+          printk( "Irq 5 shouldn't be used by cdrom interface on ISP16,"
+            " due to possible conflicts with the soundcard.\n");
+          break;
+  case 7: irq_code = ISP16_IRQ_7;
+          printk( "Irq 7 shouldn't be used by cdrom interface on ISP16,"
+            " due to possible conflicts with the soundcard.\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( "Irq %d not supported by cdrom interface on ISP16.\n", irq );
+    return(-1);
+  }
+  switch (dma) {
+  case 0: dma_code = ISP16_DMA_X; break;  /* disable dma */
+  case 1: printk( "Dma 1 cannot be used by cdrom interface on ISP16,"
+            " due to conflict with the soundcard.\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( "Dma %d not supported by cdrom interface on ISP16.\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( "Drive type (code 0x%02X) not supported by cdrom"
+     " interface on ISP16.\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 isp16_sound_config( void )
+{
+  int i;
+  u_char saved;
+
+  saved = ISP16_IN( 0xF8D ) & 0x8F;
+    
+  ISP16_OUT( 0xF8D, 0x40 );
+
+  /*
+   * Now we should wait for a while...
+   */
+  for( i = 16*1024; i--; );
+  
+  ISP16_OUT( 0xF8D, saved );
+
+  ISP16_OUT( 0xF91, 0x1B );
+
+  for( i = 5*64*1024; i != 0; i-- )
+    if( !( inb( 0x534 ) & 0x80 ) ) break;
+
+  if( i > 0 ) {
+    saved = ( inb( 0x534 ) & 0xE0 ) | 0x0A;
+    outb( saved, 0x534 );
+
+    special_mask = ( inb( 0x535 ) >> 4 ) & 0x08;
+
+    saved = ( inb( 0x534 ) & 0xE0 ) | 0x0C;
+    outb( saved, 0x534 );
+
+    switch( inb( 0x535 ) ) {
+      case 0x09:
+      case 0x0A:
+        special_mask |= 0x05;
+        break;
+      case 0x8A:
+        special_mask = 0x0F;
+        break;
+      default:
+        i = 0;
+    }
+  }
+  if ( i == 0 ) {
+    printk( "Strange MediaMagic, but\n" );
+  }
+  else {
+    printk( "Conf:" );
+    saved = inb( 0x534 ) & 0xE0;
+    for( i = 0; i < 16; i++ ) {
+      outb( 0x20 | ( u_char )i, 0x534 );
+      outb( defaults[i], 0x535 );
+    }
+    for ( i = 0; i < 16; i++ ) {
+      outb( 0x20 | ( u_char )i, 0x534 );
+      saved = inb( 0x535 );
+      printk( " %02X", saved );
+    }
+    printk( "\n" );
+  }
+
+  ISP16_OUT( 0xF91, 0xA0 | special_mask );
+
+  /*
+   * The following have no explaination yet.
+   */
+  ISP16_OUT( 0xF90, 0xA2 );
+  ISP16_OUT( 0xF92, 0x03 );
+
+  /*
+   * Turn general sound on and set total volume.
+   */
+  ISP16_OUT( 0xF93, 0x0A );
+
+/*
+  outb( 0x04, 0x224 );
+  saved = inb( 0x225 );
+  outb( 0x04, 0x224 );
+  outb( saved, 0x225 );
+*/
+
+}