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, 173 insertions, 0 deletions

diff --git a/linux/src/drivers/scsi/t128.h b/linux/src/drivers/scsi/t128.h
new file mode 100644
index 0000000..43a8982
--- /dev/null
+++ b/linux/src/drivers/scsi/t128.h
@@ -0,0 +1,173 @@
+/*
+ * Trantor T128/T128F/T228 defines
+ *	Note : architecturally, the T100 and T128 are different and won't work
+ *
+ * Copyright 1993, Drew Eckhardt
+ *	Visionary Computing
+ *	(Unix and Linux consulting and custom programming)
+ *	drew@colorado.edu
+ *      +1 (303) 440-4894
+ *
+ * DISTRIBUTION RELEASE 3. 
+ *
+ * For more information, please consult 
+ *
+ * Trantor Systems, Ltd.
+ * T128/T128F/T228 SCSI Host Adapter
+ * Hardware Specifications
+ * 
+ * Trantor Systems, Ltd. 
+ * 5415 Randall Place
+ * Fremont, CA 94538
+ * 1+ (415) 770-1400, FAX 1+ (415) 770-9910
+ * 
+ * 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
+ */
+
+/*
+ * $Log: t128.h,v $
+ */
+
+#ifndef T128_H
+#define T128_H
+
+#define T128_PUBLIC_RELEASE 3
+
+#define TDEBUG_INIT	0x1
+#define TDEBUG_TRANSFER 0x2
+
+/*
+ * The trantor boards are memory mapped. They use an NCR5380 or 
+ * equivalent (my sample board had part second sourced from ZILOG).
+ * NCR's recommended "Pseudo-DMA" architecture is used, where 
+ * a PAL drives the DMA signals on the 5380 allowing fast, blind
+ * transfers with proper handshaking. 
+ */
+
+/*
+ * Note : a boot switch is provided for the purpose of informing the 
+ * firmware to boot or not boot from attached SCSI devices.  So, I imagine
+ * there are fewer people who've yanked the ROM like they do on the Seagate
+ * to make bootup faster, and I'll probably use this for autodetection.
+ */
+#define T_ROM_OFFSET		0
+
+/*
+ * Note : my sample board *WAS NOT* populated with the SRAM, so this
+ * can't be used for autodetection without a ROM present.
+ */
+#define T_RAM_OFFSET		0x1800
+
+/*
+ * All of the registers are allocated 32 bytes of address space, except
+ * for the data register (read/write to/from the 5380 in pseudo-DMA mode)
+ */ 
+#define T_CONTROL_REG_OFFSET	0x1c00	/* rw */
+#define T_CR_INT		0x10	/* Enable interrupts */
+#define T_CR_CT			0x02	/* Reset watchdog timer */
+
+#define T_STATUS_REG_OFFSET	0x1c20	/* ro */
+#define T_ST_BOOT		0x80	/* Boot switch */
+#define T_ST_S3			0x40	/* User settable switches, */
+#define T_ST_S2			0x20	/* read 0 when switch is on, 1 off */
+#define T_ST_S1			0x10
+#define T_ST_PS2		0x08	/* Set for Microchannel 228 */
+#define T_ST_RDY		0x04	/* 5380 DRQ */
+#define T_ST_TIM		0x02	/* indicates 40us watchdog timer fired */
+#define T_ST_ZERO		0x01	/* Always zero */
+
+#define T_5380_OFFSET		0x1d00	/* 8 registers here, see NCR5380.h */
+
+#define T_DATA_REG_OFFSET	0x1e00	/* rw 512 bytes long */
+
+#ifndef ASM
+int t128_abort(Scsi_Cmnd *);
+int t128_biosparam(Disk *, kdev_t, int*);
+int t128_detect(Scsi_Host_Template *);
+int t128_queue_command(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
+int t128_reset(Scsi_Cmnd *, unsigned int reset_flags);
+int t128_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 TRANTOR_T128 {NULL, NULL, NULL, NULL, \
+	"Trantor T128/T128F/T228", t128_detect, NULL,  \
+	NULL,							\
+	NULL, t128_queue_command, t128_abort, t128_reset, NULL, 	\
+	t128_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 T128_address(reg) (base + T_5380_OFFSET + ((reg) * 0x20))
+
+#if !(TDEBUG & TDEBUG_TRANSFER) 
+#define NCR5380_read(reg) (*(T128_address(reg)))
+#define NCR5380_write(reg, value) (*(T128_address(reg)) = (value))
+#else
+#define NCR5380_read(reg)						\
+    (((unsigned char) printk("scsi%d : read register %d at address %08x\n"\
+    , instance->hostno, (reg), T128_address(reg))), *(T128_address(reg)))
+
+#define NCR5380_write(reg, value) {					\
+    printk("scsi%d : write %02x to register %d at address %08x\n", 	\
+	    instance->hostno, (value), (reg), T128_address(reg));	\
+    *(T128_address(reg)) = (value);					\
+}
+#endif
+
+#define NCR5380_intr t128_intr
+#define NCR5380_queue_command t128_queue_command
+#define NCR5380_abort t128_abort
+#define NCR5380_reset t128_reset
+#define NCR5380_proc_info t128_proc_info
+
+/* 15 14 12 10 7 5 3 
+   1101 0100 1010 1000 */
+   
+#define T128_IRQS 0xc4a8 
+
+#endif /* else def HOSTS_C */
+#endif /* ndef ASM */
+#endif /* T128_H */