1998-11-30 OKUJI Yoshinori <okuji@kuicr.kyoto-u.ac.jp>

	Clean up linux emulation code to make it architecture-independent
	as much as possible.

	* linux: Renamed from linuxdev.
	* Makefile.in (objfiles): Add linux.o instead of linuxdev.o.
	(MAKE): New variable. Used for the linux.o target.
	* configure.in: Add AC_CHECK_TOOL(MAKE, make).
	* i386/i386/spl.h: Include <i386/ipl.h>, for compatibility with
	OSF Mach 3.0. Suggested by Elgin Lee <ehl@funghi.com>.
	* linux/src: Renamed from linux/linux.
	* linux/dev: Renamed from linux/mach.
	* linux/Drivers.in (AC_INIT): Use dev/include/linux/autoconf.h,
	instead of mach/include/linux/autoconf.h.
	* Makefile.in (all): Target ../linux.o instead of ../linuxdev.o.
	* linux/dev/drivers/block/genhd.c: Include <machine/spl.h> instead
	of <i386/ipl.h>.
	* linux/dev/drivers/net/auto_irq.c: Remove unneeded header files,
	<i386/ipl.h> and <i386/pic.h>.
	* linux/dev/init/main.c: Many i386-dependent codes moved to ...
	* linux/dev/arch/i386/irq.c: ... here.
	* linux/dev/arch/i386/setup.c: New file.
	* linux/dev/arch/i386/linux_emul.h: Likewise.
	* linux/dev/arch/i386/glue/timer.c: Merged into sched.c.
	* linux/dev/arch/i386/glue/sched.c: Include <machine/spl.h> instead
	of <i386/ipl.h>, and moved to ...
	* linux/dev/kernel/sched.c: ... here.
	* linux/dev/arch/i386/glue/block.c: Include <machine/spl.h> and
	<linux_emul.h>, instead of i386-dependent header files, and
	moved to ...
	* linux/dev/glue/blocl.c: ... here.
	* linux/dev/arch/i386/glue/net.c: Include <machine/spl.h> and
	<linux_emul.h>, instead of i386-dependent header files, and
	moved to ...
	* linux/dev/glue/net.c: ... here.
	* linux/dev/arch/i386/glue/misc.c: Remove `x86' and moved to ...
	* linux/dev/glue/misc.c: ... here.
	* linux/dev/arch/i386/glue/kmem.c: Moved to ...
	* linux/dev/glue/kmem.c: ... here.

1 files changed, 169 insertions, 0 deletions

diff --git a/linux/src/drivers/scsi/dtc.h b/linux/src/drivers/scsi/dtc.h
new file mode 100644
index 0000000..4c41237
--- /dev/null
+++ b/linux/src/drivers/scsi/dtc.h
@@ -0,0 +1,169 @@
+/*
+ * DTC controller, taken from T128 driver by...
+ * Copyright 1993, Drew Eckhardt
+ *	Visionary Computing
+ *	(Unix and Linux consulting and custom programming)
+ *	drew@colorado.edu
+ *      +1 (303) 440-4894
+ *
+ * DISTRIBUTION RELEASE 1. 
+ *
+ * For more information, please consult 
+ *
+ * 
+ * 
+ * and 
+ *
+ * NCR 5380 Family
+ * SCSI Protocol Controller
+ * Databook
+ *
+ * NCR Microelectronics
+ * 1635 Aeroplaza Drive
+ * Colorado Springs, CO 80916
+ * 1+ (719) 578-3400
+ * 1+ (800) 334-5454
+ */
+
+#ifndef DTC3280_H
+#define DTC3280_H
+
+#define DTC_PUBLIC_RELEASE 1
+
+/*#define DTCDEBUG 0x1*/
+#define DTCDEBUG_INIT	0x1
+#define DTCDEBUG_TRANSFER 0x2
+
+/*
+ * The DTC3180 & 3280 boards are memory mapped.
+ * 
+ */
+
+/*
+ */ 
+/* Offset from DTC_5380_OFFSET */
+#define DTC_CONTROL_REG		0x100	/* rw */
+#define D_CR_ACCESS		0x80	/* ro set=can access 3280 registers */
+#define CSR_DIR_READ		0x40	/* rw direction, 1 = read 0 = write */
+
+#define CSR_RESET              0x80    /* wo  Resets 53c400 */
+#define CSR_5380_REG           0x80    /* ro  5380 registers can be accessed */
+#define CSR_TRANS_DIR          0x40    /* rw  Data transfer direction */
+#define CSR_SCSI_BUFF_INTR     0x20    /* rw  Enable int on transfer ready */
+#define CSR_5380_INTR          0x10    /* rw  Enable 5380 interrupts */
+#define CSR_SHARED_INTR        0x08    /* rw  Interrupt sharing */
+#define CSR_HOST_BUF_NOT_RDY   0x04    /* ro  Host buffer not ready */
+#define CSR_SCSI_BUF_RDY       0x02    /* ro  SCSI buffer ready */
+#define CSR_GATED_5380_IRQ     0x01    /* ro  Last block xferred */
+#define CSR_INT_BASE (CSR_SCSI_BUFF_INTR | CSR_5380_INTR)
+
+
+#define DTC_BLK_CNT		0x101   /* rw 
+					 * # of 128-byte blocks to transfer */
+
+
+#define D_CR_ACCESS             0x80    /* ro set=can access 3280 registers */
+
+#define DTC_SWITCH_REG		0x3982	/* ro - DIP switches */
+#define DTC_RESUME_XFER		0x3982	/* wo - resume data xfer 
+					   * after disconnect/reconnect*/
+
+#define DTC_5380_OFFSET		0x3880	/* 8 registers here, see NCR5380.h */
+
+/*!!!! for dtc, it's a 128 byte buffer at 3900 !!! */
+#define DTC_DATA_BUF		0x3900  /* rw 128 bytes long */
+
+
+#ifndef ASM
+int dtc_abort(Scsi_Cmnd *);
+int dtc_biosparam(Disk *, kdev_t, int*);
+int dtc_detect(Scsi_Host_Template *);
+int dtc_queue_command(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
+int dtc_reset(Scsi_Cmnd *, unsigned int reset_flags);
+int dtc_proc_info (char *buffer, char **start, off_t offset,
+		   int length, int hostno, int inout);
+
+#ifndef NULL
+#define NULL 0
+#endif
+
+#ifndef CMD_PER_LUN
+#define CMD_PER_LUN 2
+#endif
+
+#ifndef CAN_QUEUE
+#define CAN_QUEUE 32 
+#endif
+
+/* 
+ * I hadn't thought of this with the earlier drivers - but to prevent
+ * macro definition conflicts, we shouldn't define all of the internal
+ * macros when this is being used solely for the host stub.
+ */
+
+#if defined(HOSTS_C) || defined(MODULE)
+
+#define DTC3x80 {NULL, NULL, NULL, NULL, \
+	"DTC 3180/3280 ", dtc_detect, NULL,  \
+	NULL,							\
+	NULL, dtc_queue_command, dtc_abort, dtc_reset, NULL, 	\
+	dtc_biosparam, 						\
+	/* can queue */ CAN_QUEUE, /* id */ 7, SG_ALL,			\
+	/* cmd per lun */ CMD_PER_LUN , 0, 0, DISABLE_CLUSTERING}
+
+#endif
+
+#ifndef HOSTS_C
+
+#define NCR5380_implementation_fields \
+    volatile unsigned char *base
+
+#define NCR5380_local_declare() \
+    volatile unsigned char *base
+
+#define NCR5380_setup(instance) \
+    base = (volatile unsigned char *) (instance)->base
+
+#define DTC_address(reg) (base + DTC_5380_OFFSET + reg)
+
+#define dbNCR5380_read(reg)                                              \
+    (rval=*(DTC_address(reg)), \
+     (((unsigned char) printk("DTC : read register %d at addr %08x is: %02x\n"\
+    , (reg), (int)DTC_address(reg), rval)), rval ) )
+
+#define dbNCR5380_write(reg, value) do {                                  \
+    printk("DTC : write %02x to register %d at address %08x\n",         \
+            (value), (reg), (int)DTC_address(reg));     \
+    *(DTC_address(reg)) = (value);} while(0)
+
+
+#if !(DTCDEBUG & DTCDEBUG_TRANSFER) 
+#define NCR5380_read(reg) (*(DTC_address(reg)))
+#define NCR5380_write(reg, value) (*(DTC_address(reg)) = (value))
+#else
+#define NCR5380_read(reg) (*(DTC_address(reg)))
+#define xNCR5380_read(reg)						\
+    (((unsigned char) printk("DTC : read register %d at address %08x\n"\
+    , (reg), DTC_address(reg))), *(DTC_address(reg)))
+
+#define NCR5380_write(reg, value) do {					\
+    printk("DTC : write %02x to register %d at address %08x\n", 	\
+	    (value), (reg), (int)DTC_address(reg));	\
+    *(DTC_address(reg)) = (value);		} while(0)
+#endif
+
+#define NCR5380_intr dtc_intr
+#define NCR5380_queue_command dtc_queue_command
+#define NCR5380_abort dtc_abort
+#define NCR5380_reset dtc_reset
+#define NCR5380_proc_info dtc_proc_info 
+
+/* 15 12 11 10
+   1001 1100 0000 0000 */
+
+#define DTC_IRQS 0x9c00
+
+
+#endif /* else def HOSTS_C */
+#endif /* ndef ASM */
+#endif /* DTC3280_H */