patch-1.3.43 linux/drivers/block/umc8672.c

• Lines: 109
• Date: Fri Nov 17 08:33:07 1995
• Orig file: v1.3.42/linux/drivers/block/umc8672.c
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v1.3.42/linux/drivers/block/umc8672.c linux/drivers/block/umc8672.c
@@ -0,0 +1,108 @@
+/*
+ *  linux/drivers/block/umc8672.c	Version 0.01  Nov 16, 1995
+ *
+ *  Copyright (C) 1995  Linus Torvalds & author (see below)
+ */
+
+/*
+ *  Principal Author/Maintainer:  PODIEN@hml2.atlas.de (Wolfram Podien)
+ *
+ *  This file provides support for the advanced features
+ *  of the UMC 8672 IDE interface.
+ *
+ *  Version 0.01	Initial version, hacked out of ide.c,
+ *			and #include'd rather than compiled separately.
+ *			This will get cleaned up in a subsequent release.
+ */
+
+/*
+ * VLB Controller Support from 
+ * Wolfram Podien
+ * Rohoefe 3
+ * D28832 Achim
+ * Germany
+ *
+ * To enable UMC8672 support there must a lilo line like
+ * append="hd=umc8672"...
+ * To set the speed according to the abilities of the hardware there must be a
+ * line like
+ * #define UMC_DRIVE0 11
+ * in the beginning of the driver, which sets the speed of drive 0 to 11 (there
+ * are some lines present). 0 - 11 are allowed speed values. These values are
+ * the results from the DOS speed test programm supplied from UMC. 11 is the 
+ * highest speed (about PIO mode 3)
+ */
+
+/*
+ * The speeds will eventually become selectable using hdparm via ioctl's,
+ * but for now they are coded here:
+ */
+#define UMC_DRIVE0      11              /* DOS messured drive Speeds */
+#define UMC_DRIVE1      11              /* 0 - 11 allowed */
+#define UMC_DRIVE2      11              /* 11 = Highest Speed */
+#define UMC_DRIVE3      11              /* In case of crash reduce speed */
+
+void out_umc (char port,char wert)
+{
+	outb_p (port,0x108);
+	outb_p (wert,0x109);
+}
+
+byte in_umc (char port)
+{
+	outb_p (port,0x108);
+	return inb_p (0x109);
+}
+
+void init_umc8672(void)
+{
+	int i,tmp;
+	int speed [4];
+/*      0    1    2    3    4    5    6    7    8    9    10   11      */
+	char speedtab [3][12] = {
+	{0xf ,0xb ,0x2 ,0x2 ,0x2 ,0x1 ,0x1 ,0x1 ,0x1 ,0x1 ,0x1 ,0x1 },
+	{0x3 ,0x2 ,0x2 ,0x2 ,0x2 ,0x2 ,0x1 ,0x1 ,0x1 ,0x1 ,0x1 ,0x1 },
+	{0xff,0xcb,0xc0,0x58,0x36,0x33,0x23,0x22,0x21,0x11,0x10,0x0}};
+
+	cli ();
+	outb_p (0x5A,0x108); /* enable umc */
+	if (in_umc (0xd5) != 0xa0)
+	{
+		sti ();
+		printk ("UMC8672 not found\n");
+		return;  
+	}
+	speed[0] = UMC_DRIVE0;
+	speed[1] = UMC_DRIVE1;
+	speed[2] = UMC_DRIVE2;
+	speed[3] = UMC_DRIVE3;
+	for (i = 0;i < 4;i++)
+	{
+		if ((speed[i] < 0) || (speed[i] > 11))
+		{
+			sti ();
+			printk ("UMC 8672 drive speed out of range. Drive %d Speed %d\n",
+				i, speed[i]);
+			printk ("UMC support aborted\n");
+			return; 
+		}
+	}
+	out_umc (0xd7,(speedtab[0][speed[2]] | (speedtab[0][speed[3]]<<4)));
+	out_umc (0xd6,(speedtab[0][speed[0]] | (speedtab[0][speed[1]]<<4)));
+	tmp = 0;
+	for (i = 3; i >= 0; i--)
+	{
+		tmp = (tmp << 2) | speedtab[1][speed[i]];
+	}
+	out_umc (0xdc,tmp);
+	for (i = 0;i < 4; i++)
+	{
+		out_umc (0xd0+i,speedtab[2][speed[i]]);
+		out_umc (0xd8+i,speedtab[2][speed[i]]);
+	}
+	outb_p (0xa5,0x108); /* disable umc */
+	sti ();
+	printk ("Speeds for UMC8672 \n");
+	for (i = 0;i < 4;i++)
+		 printk ("Drive %d speed %d\n",i,speed[i]);
+}