Merge with 2.3.19.

author: Ralf Baechle <ralf@linux-mips.org> 1999-10-09 00:00:47 +0000
committer: Ralf Baechle <ralf@linux-mips.org> 1999-10-09 00:00:47 +0000
commit: d6434e1042f3b0a6dfe1b1f615af369486f9b1fa (patch)
tree: e2be02f33984c48ec019c654051d27964e42c441 /include/asm-m68k
parent: 609d1e803baf519487233b765eb487f9ec227a18 (diff)
46 files changed, 2782 insertions, 360 deletions
diff --git a/include/asm-m68k/cache.h b/include/asm-m68k/cache.h
index b3a873938..9e009ce18 100644
--- a/include/asm-m68k/cache.h
+++ b/include/asm-m68k/cache.h
@@ -11,4 +11,12 @@
 
 #define        SMP_CACHE_BYTES L1_CACHE_BYTES
 
+#ifdef MODULE
+#define __cacheline_aligned __attribute__((__aligned__(L1_CACHE_BYTES)))
+#else
+#define __cacheline_aligned					\
+  __attribute__((__aligned__(L1_CACHE_BYTES),			\
+		 __section__(".data.cacheline_aligned")))
+#endif
+
 #endif
diff --git a/include/asm-m68k/dvma.h b/include/asm-m68k/dvma.h
index f6976b43c..4f7875def 100644
--- a/include/asm-m68k/dvma.h
+++ b/include/asm-m68k/dvma.h
@@ -9,6 +9,23 @@
 #ifndef __M68K_DVMA_H
 #define __M68K_DVMA_H
 
+#ifdef CONFIG_SUN3
+/* sun3 dvma page support */
+
+/* memory and pmegs reserved for dvma */
+#define DVMA_PMEG_START 10
+#define DVMA_PMEG_END 16
+#define DVMA_START 0xff00000
+#define DVMA_END 0xffe0000
+#define DVMA_SIZE (DVMA_END-DVMA_START)
+
+/* virt <-> phys conversions */
+#define sun3_dvma_vtop(x) ((unsigned long)(x) & 0xffffff)
+#define sun3_dvma_ptov(x) ((unsigned long)(x) | 0xf000000)
+	
+void *sun3_dvma_malloc(int len);
+#else /* Sun3x */
+
 /* Structure to describe the current status of DMA registers on the Sparc */
 struct sparc_dma_registers {
   __volatile__ unsigned long cond_reg;	/* DMA condition register */
@@ -161,5 +178,5 @@ extern struct Linux_SBus_DMA *dma_chain;
 
 extern unsigned long dvma_alloc (unsigned long, unsigned long);
 extern void dvma_free (unsigned long, unsigned long);
-
+#endif /* !CONFIG_SUN3 */
 #endif /* !(__M68K_DVMA_H) */
diff --git a/include/asm-m68k/elf.h b/include/asm-m68k/elf.h
index 70a0c8087..8799724e6 100644
--- a/include/asm-m68k/elf.h
+++ b/include/asm-m68k/elf.h
@@ -33,14 +33,22 @@ typedef struct user_m68kfp_struct elf_fpregset_t;
 #define ELF_PLAT_INIT(_r)	_r->a1 = 0
 
 #define USE_ELF_CORE_DUMP
+#ifndef CONFIG_SUN3
 #define ELF_EXEC_PAGESIZE	4096
+#else
+#define ELF_EXEC_PAGESIZE	8192
+#endif
 
 /* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
    use of this is to invoke "./ld.so someprog" to test out a new version of
    the loader.  We need to make sure that it is out of the way of the program
    that it will "exec", and that there is sufficient room for the brk.  */
 
+#ifndef CONFIG_SUN3
 #define ELF_ET_DYN_BASE         0xD0000000UL
+#else
+#define ELF_ET_DYN_BASE         0x0D800000UL
+#endif
 
 #define ELF_CORE_COPY_REGS(pr_reg, regs)				\
 	/* Bleech. */							\
diff --git a/include/asm-m68k/entry.h b/include/asm-m68k/entry.h
index 647764bd1..56ab0dcf8 100644
--- a/include/asm-m68k/entry.h
+++ b/include/asm-m68k/entry.h
@@ -3,6 +3,7 @@
 
 #include <linux/config.h>
 #include <asm/setup.h>
+#include <asm/page.h>
 #ifdef CONFIG_KGDB
 #include <asm/kgdb.h>
 #endif
@@ -132,7 +133,7 @@ PF_DTRACE_BIT = 5
 
 .macro	get_current reg=%d0
 	movel	%sp,\reg
-	andw	#-8192,\reg
+	andw	#-KTHREAD_SIZE,\reg
 	movel	\reg,%curptr
 .endm
 
@@ -161,7 +162,7 @@ PF_DTRACE_BIT = 5
 #endif
 #define GET_CURRENT(tmp) \
 	"movel	%%sp,"#tmp"\n\t" \
-	"andw	#-8192,"#tmp"\n\t" \
+	"andw	#-KTHREAD_SIZE,"#tmp"\n\t" \
 	"movel	"#tmp",%%a2"
 
 #endif
diff --git a/include/asm-m68k/fpu.h b/include/asm-m68k/fpu.h
index 717ecfa7f..3bcf85065 100644
--- a/include/asm-m68k/fpu.h
+++ b/include/asm-m68k/fpu.h
@@ -11,6 +11,8 @@
 #define FPSTATESIZE (216/sizeof(unsigned char))
 #elif defined(CONFIG_M68040)
 #define FPSTATESIZE (96/sizeof(unsigned char))
+#elif defined(CONFIG_M68KFPU_EMU)
+#define FPSTATESIZE (28/sizeof(unsigned char))
 #elif defined(CONFIG_M68060)
 #define FPSTATESIZE (12/sizeof(unsigned char))
 #else
diff --git a/include/asm-m68k/hardirq.h b/include/asm-m68k/hardirq.h
index acae65fc6..6e8e0d4ac 100644
--- a/include/asm-m68k/hardirq.h
+++ b/include/asm-m68k/hardirq.h
@@ -1,7 +1,7 @@
 #ifndef __M68K_HARDIRQ_H
 #define __M68K_HARDIRQ_H
 
-#include <linux/tasks.h>
+#include <linux/threads.h>
 
 extern unsigned int local_irq_count[NR_CPUS];
 
diff --git a/include/asm-m68k/hwtest.h b/include/asm-m68k/hwtest.h
index 17d3f0ad7..ec7f96a08 100644
--- a/include/asm-m68k/hwtest.h
+++ b/include/asm-m68k/hwtest.h
@@ -2,7 +2,7 @@
  * see arch/m68k/mm/hwtest.c.
  *  -- PMM <pmaydell@chiark.greenend.org.uk> 05/1998
  *
- * Removed initfunc from decls.  We might want them in modules, and 
+ * Removed __init from decls.  We might want them in modules, and 
  * the code is tiny anyway.  16/5/98 pb
  */
 
diff --git a/include/asm-m68k/ide.h b/include/asm-m68k/ide.h
index e4a83371d..5ef14f29e 100644
--- a/include/asm-m68k/ide.h
+++ b/include/asm-m68k/ide.h
@@ -38,6 +38,7 @@
 #include <asm/irq.h>
 
 #ifdef CONFIG_ATARI
+#include <linux/interrupt.h>
 #include <asm/atari_stdma.h>
 #endif
 
@@ -63,7 +64,7 @@ int q40ide_default_io_base(int);
 static __inline__ ide_ioreg_t ide_default_io_base(int index)
 {
 	if (MACH_IS_Q40)
-		return q40ide_default_io_base(index);
+		return (ide_ioreg_t)q40ide_default_io_base(index);
 	else return 0;
 }
 
@@ -82,7 +83,8 @@ static __inline__ void ide_init_hwif_ports(hw_regs_t *hw, ide_ioreg_t data_port,
 	if (MACH_IS_Q40)
 		return q40_ide_init_hwif_ports(hw, (q40ide_ioreg_t) data_port, (q40ide_ioreg_t) ctrl_port, irq);
 #endif
-	printk("ide_init_hwif_ports: must not be called\n");
+	if (data_port || ctrl_port)
+		printk("ide_init_hwif_ports: must not be called\n");
 }
 
 /*
@@ -104,10 +106,6 @@ typedef union {
 	} b;
 	} select_t;
 
-#ifdef CONFIG_MAC	/* MSch: Hack; wrapper for ide_intr */
-void mac_ide_intr(int irq, void *dev_id, struct pt_regs *regs);
-#endif
-
 static __inline__ int ide_request_irq(unsigned int irq, void (*handler)(int, void *, struct pt_regs *),
 			unsigned long flags, const char *device, void *dev_id)
 {
@@ -121,11 +119,7 @@ static __inline__ int ide_request_irq(unsigned int irq, void (*handler)(int, voi
 #endif /* CONFIG_Q40*/
 #ifdef CONFIG_MAC
 	if (MACH_IS_MAC)
-#if 0	/* MSch Hack: maybe later we'll call ide_intr without a wrapper */
-	return nubus_request_irq(12, dev_id, handler);
-#else
-	return nubus_request_irq(12, dev_id, mac_ide_intr);
-#endif
+		return request_irq(irq, handler, 0, device, dev_id);
 #endif /* CONFIG_MAC */
 	return 0;
 }
@@ -142,7 +136,7 @@ static __inline__ void ide_free_irq(unsigned int irq, void *dev_id)
 #endif /* CONFIG_Q40*/
 #ifdef CONFIG_MAC
 	if (MACH_IS_MAC)
-		nubus_free_irq(12);
+		free_irq(irq, dev_id);
 #endif /* CONFIG_MAC */
 }
 
diff --git a/include/asm-m68k/init.h b/include/asm-m68k/init.h
index 022300376..dc73aed8a 100644
--- a/include/asm-m68k/init.h
+++ b/include/asm-m68k/init.h
@@ -7,17 +7,11 @@
 
 #define __init __attribute__ ((__section__ (".text.init")))
 #define __initdata __attribute__ ((__section__ (".data.init")))
-#define __initfunc(__arginit) \
-	__arginit __init; \
-	__arginit
 /* For assembly routines */
 #define __INIT		.section	".text.init",#alloc,#execinstr
 #define __FINIT		.previous
 #define __INITDATA	.section	".data.init",#alloc,#write
 
-#define __cacheline_aligned __attribute__ \
-		((__aligned__(16), __section__ (".data.cacheline_aligned")))
-
 #else
 
 /* gdb doesn't like it all if the code for one source file isn't together in
@@ -25,12 +19,10 @@
 	
 #define __init
 #define __initdata
-#define __initfunc(__arginit) __arginit
 /* For assembly routines */
 #define __INIT
 #define __FINIT
 #define __INITDATA
-#define __cacheline_aligned __attribute__ ((__aligned__(16)))
 
 #endif /* CONFIG_KGDB */
 
diff --git a/include/asm-m68k/intersil.h b/include/asm-m68k/intersil.h
new file mode 100644
index 000000000..e039ea320
--- /dev/null
+++ b/include/asm-m68k/intersil.h
@@ -0,0 +1,48 @@
+#ifndef _SUN3_INTERSIL_H
+#define _SUN3_INTERSIL_H
+/* bits 0 and 1 */
+#define INTERSIL_FREQ_32K        0x00
+#define INTERSIL_FREQ_1M         0x01
+#define INTERSIL_FREQ_2M         0x02
+#define INTERSIL_FREQ_4M         0x03
+
+/* bit 2 */
+#define INTERSIL_12H_MODE   0x00
+#define INTERSIL_24H_MODE   0x04
+
+/* bit 3 */
+#define INTESIL_STOP            0x00
+#define INTERSIL_RUN             0x08
+
+/* bit 4 */
+#define INTERSIL_INT_ENABLE     0x10
+#define INTERSIL_INT_DISABLE    0x00
+                
+/* bit 5 */
+#define INTERSIL_MODE_NORMAL     0x00
+#define INTERSIL_MODE_TEST       0x20
+
+#define INTERSIL_HZ_100_MASK	 0x02
+
+struct intersil_dt {
+	u_char	csec;
+	u_char	hour;
+	u_char	minute;
+	u_char	second;
+	u_char	month;
+	u_char	day;
+	u_char	year;
+	u_char	weekday;
+};
+
+struct intersil_7170 {
+	struct intersil_dt counter;
+	struct intersil_dt alarm;
+	u_char	int_reg;
+	u_char	cmd_reg;
+};
+
+extern volatile char* clock_va;
+#define intersil_clock ((volatile struct intersil_7170 *) clock_va)
+#define intersil_clear() (void)intersil_clock->int_reg
+#endif
diff --git a/include/asm-m68k/io.h b/include/asm-m68k/io.h
index 7843b8f09..9257711dc 100644
--- a/include/asm-m68k/io.h
+++ b/include/asm-m68k/io.h
@@ -14,6 +14,10 @@
 #include <asm/virtconvert.h>
 
 /*
+ * These are for ISA/PCI shared memory _only_ and should never be used
+ * on any other type of memory, including Zorro memory. They are meant to
+ * access the bus in the bus byte order which is little-endian!.
+ *
  * readX/writeX() are used to access memory mapped devices. On some
  * architectures the memory mapped IO stuff needs to be accessed
  * differently. On the m68k architecture, we just read/write the
diff --git a/include/asm-m68k/irq.h b/include/asm-m68k/irq.h
index 169fa381c..0a62d30ef 100644
--- a/include/asm-m68k/irq.h
+++ b/include/asm-m68k/irq.h
@@ -70,19 +70,26 @@ static __inline__ int irq_cannonicalize(int irq)
 extern void (*enable_irq)(unsigned int);
 extern void (*disable_irq)(unsigned int);
 
+#define disable_irq_nosync	disable_irq
+#define enable_irq_nosync	enable_irq
+
 extern int sys_request_irq(unsigned int, 
 	void (*)(int, void *, struct pt_regs *), 
 	unsigned long, const char *, void *);
 extern void sys_free_irq(unsigned int, void *);
 
 /*
- * various flags for request_irq()
+ * various flags for request_irq() - the Amiga now uses the standard
+ * mechanism like all other architectures - SA_INTERRUPT and SA_SHIRQ
+ * are your friends.
  */
+#ifndef CONFIG_AMIGA
 #define IRQ_FLG_LOCK	(0x0001)	/* handler is not replaceable	*/
 #define IRQ_FLG_REPLACE	(0x0002)	/* replace existing handler	*/
 #define IRQ_FLG_FAST	(0x0004)
 #define IRQ_FLG_SLOW	(0x0008)
 #define IRQ_FLG_STD	(0x8000)	/* internally used		*/
+#endif
 
 /*
  * This structure is used to chain together the ISRs for a particular
diff --git a/include/asm-m68k/mac_iop.h b/include/asm-m68k/mac_iop.h
new file mode 100644
index 000000000..e04a9b58e
--- /dev/null
+++ b/include/asm-m68k/mac_iop.h
@@ -0,0 +1,162 @@
+/*
+ * I/O Processor (IOP) defines and structures, mostly snagged from A/UX
+ * header files.
+ *
+ * The original header from which this was taken is copyrighted. I've done some
+ * rewriting (in fact my changes make this a bit more readable, IMHO) but some
+ * more should be done.
+ */
+
+/*
+ * This is the base address of the IOPs. Use this as the address of
+ * a "struct iop" (see below) to see where the actual registers fall.
+ */
+
+#define SCC_IOP_BASE_IIFX	(0x50F04000)
+#define ISM_IOP_BASE_IIFX	(0x50F12000)
+
+#define SCC_IOP_BASE_QUADRA	(0x50F0C000)
+#define ISM_IOP_BASE_QUADRA	(0x50F1E000)
+
+/* IOP status/control register bits: */
+
+#define	IOP_BYPASS	0x01	/* bypass-mode hardware access */
+#define	IOP_AUTOINC	0x02	/* allow autoincrement of ramhi/lo */
+#define	IOP_RUN		0x04	/* set to 0 to reset IOP chip */
+#define	IOP_IRQ		0x08	/* generate IRQ to IOP if 1 */
+#define	IOP_INT0	0x10	/* intr priority from IOP to host */
+#define	IOP_INT1	0x20	/* intr priority from IOP to host */
+#define	IOP_HWINT	0x40	/* IRQ from hardware; bypass mode only */
+#define	IOP_DMAINACTIVE	0x80	/* no DMA request active; bypass mode only */
+
+#define NUM_IOPS	2
+#define NUM_IOP_CHAN	7
+#define NUM_IOP_MSGS	NUM_IOP_CHAN*8
+#define IOP_MSG_LEN	32
+
+/* IOP reference numbers, used by the globally-visible iop_xxx functions */
+
+#define IOP_NUM_SCC	0
+#define IOP_NUM_ISM	1
+
+/* IOP channel states */
+
+#define IOP_MSG_IDLE		0       /* idle                         */
+#define IOP_MSG_NEW		1       /* new message sent             */
+#define IOP_MSG_RCVD		2       /* message received; processing */
+#define IOP_MSG_COMPLETE	3       /* message processing complete  */
+
+/* IOP message status codes */
+
+#define IOP_MSGSTATUS_UNUSED	0	/* Unusued message structure       */
+#define IOP_MSGSTATUS_WAITING	1	/* waiting for channel             */
+#define IOP_MSGSTATUS_SENT	2	/* message sent, awaiting reply    */
+#define IOP_MSGSTATUS_COMPLETE	3	/* message complete and reply rcvd */
+#define IOP_MSGSTATUS_UNSOL	6	/* message is unsolicited          */
+
+/* IOP memory addresses of the members of the the mac_iop_kernel structure. */
+
+#define IOP_ADDR_MAX_SEND_CHAN	0x0200
+#define IOP_ADDR_SEND_STATE	0x0201
+#define IOP_ADDR_PATCH_CTRL	0x021F
+#define IOP_ADDR_SEND_MSG	0x0220
+#define IOP_ADDR_MAX_RECV_CHAN	0x0300
+#define IOP_ADDR_RECV_STATE	0x0301
+#define IOP_ADDR_ALIVE		0x031F
+#define IOP_ADDR_RECV_MSG	0x0320
+
+#ifndef __ASSEMBLY__
+
+/*
+ * IOP Control registers, staggered because in usual Apple style they were
+ * too lazy to decode the A0 bit. This structure is assumed to begin at
+ * one of the xxx_IOP_BASE addresses given above.
+ */
+
+struct mac_iop {
+    __u8	ram_addr_hi;	/* shared RAM address hi byte */
+    __u8	pad0;
+    __u8	ram_addr_lo;	/* shared RAM address lo byte */
+    __u8	pad1;
+    __u8	status_ctrl;	/* status/control register */
+    __u8	pad2[3];
+    __u8	ram_data;	/* RAM data byte at ramhi/lo */
+
+    __u8	pad3[23];
+
+    /* Bypass-mode hardware access registers */
+
+    union {
+	struct {		/* SCC registers */
+	    __u8 sccb_cmd;	/* SCC B command reg */
+	    __u8 pad4;
+	    __u8 scca_cmd;	/* SCC A command reg */
+	    __u8 pad5;
+	    __u8 sccb_data;	/* SCC B data */
+	    __u8 pad6;
+	    __u8 scca_data;	/* SCC A data */
+	} scc_regs;
+
+	struct {		/* ISM registers */
+	    __u8 wdata;		/* write a data byte */
+	    __u8 pad7;
+	    __u8 wmark;		/* write a mark byte */
+	    __u8 pad8;
+	    __u8 wcrc;		/* write 2-byte crc to disk */
+	    __u8 pad9;
+	    __u8 wparams;	/* write the param regs */
+	    __u8 pad10;
+	    __u8 wphase;	/* write the phase states & dirs */
+	    __u8 pad11;
+	    __u8 wsetup;	/* write the setup register */
+	    __u8 pad12;
+	    __u8 wzeroes;	/* mode reg: 1's clr bits, 0's are x */
+	    __u8 pad13;
+	    __u8 wones;		/* mode reg: 1's set bits, 0's are x */
+	    __u8 pad14;
+	    __u8 rdata;		/* read a data byte */
+	    __u8 pad15;
+	    __u8 rmark;		/* read a mark byte */
+	    __u8 pad16;
+	    __u8 rerror;	/* read the error register */
+	    __u8 pad17;
+	    __u8 rparams;	/* read the param regs */
+	    __u8 pad18;
+	    __u8 rphase;	/* read the phase states & dirs */
+	    __u8 pad19;
+	    __u8 rsetup;	/* read the setup register */
+	    __u8 pad20;
+	    __u8 rmode;		/* read the mode register */
+	    __u8 pad21;
+	    __u8 rhandshake;	/* read the handshake register */
+	} ism_regs;
+    } b;
+};
+
+/* This structure is used to track IOP messages in the Linux kernel */
+
+struct iop_msg {
+	struct iop_msg	*next;		/* next message in queue or NULL     */
+	uint	iop_num;		/* IOP number                        */
+	uint	channel;		/* channel number                    */
+	void	*caller_priv;		/* caller private data               */
+	int	status;			/* status of this message            */
+	__u8	message[IOP_MSG_LEN];	/* the message being sent/received   */
+	__u8	reply[IOP_MSG_LEN];	/* the reply to the message          */
+	void	(*handler)(struct iop_msg *, struct pt_regs *);
+					/* function to call when reply recvd */
+};
+
+extern int iop_scc_present,iop_ism_present;
+
+extern int iop_listen(uint, uint,
+			void (*handler)(struct iop_msg *, struct pt_regs *),
+			const char *);
+extern int iop_send_message(uint, uint, void *, uint, __u8 *,
+			    void (*)(struct iop_msg *, struct pt_regs *));
+extern void iop_complete_message(struct iop_msg *);
+extern void iop_upload_code(uint, __u8 *, uint, __u16);
+extern void iop_download_code(uint, __u8 *, uint, __u16);
+extern __u8 *iop_compare_code(uint, __u8 *, uint, __u16);
+
+#endif /* __ASSEMBLY__ */
diff --git a/include/asm-m68k/mac_oss.h b/include/asm-m68k/mac_oss.h
new file mode 100644
index 000000000..c48d8b840
--- /dev/null
+++ b/include/asm-m68k/mac_oss.h
@@ -0,0 +1,94 @@
+/*
+ *	OSS
+ *
+ *	This is used in place of VIA2 on the IIfx.
+ */
+ 
+#define OSS_BASE	(0x50f1a000)
+
+/*
+ * Interrupt level offsets for mac_oss->irq_level
+ */
+
+#define OSS_NUBUS0	0
+#define OSS_NUBUS1	1
+#define OSS_NUBUS2	2
+#define OSS_NUBUS3	3
+#define OSS_NUBUS4	4
+#define OSS_NUBUS5	5
+#define OSS_IOPISM	6
+#define OSS_IOPSCC	7
+#define OSS_SOUND	8
+#define OSS_SCSI	9
+#define OSS_60HZ	10
+#define OSS_VIA1	11
+#define OSS_UNUSED1	12
+#define OSS_UNUSED2	13
+#define OSS_PARITY	14
+#define OSS_UNUSED3	15
+
+#define OSS_NUM_SOURCES	16
+
+/*
+ * Pending interrupt bits in mac_oss->irq_pending
+ */
+
+#define OSS_IP_NUBUS0	0x0001
+#define OSS_IP_NUBUS1	0x0002
+#define OSS_IP_NUBUS2	0x0004
+#define OSS_IP_NUBUS3	0x0008
+#define OSS_IP_NUBUS4	0x0010
+#define OSS_IP_NUBUS5	0x0020
+#define OSS_IP_IOPISM	0x0040
+#define OSS_IP_IOPSCC	0x0080
+#define OSS_IP_SOUND	0x0100
+#define OSS_IP_SCSI	0x0200
+#define OSS_IP_60HZ	0x0400
+#define OSS_IP_VIA1	0x0800
+#define OSS_IP_UNUSED1	0x1000
+#define OSS_IP_UNUSED2	0x2000
+#define OSS_IP_PARITY	0x4000
+#define OSS_IP_UNUSED3	0x8000
+
+#define OSS_IP_NUBUS (OSS_IP_NUBUS0|OSS_IP_NUBUS1|OSS_IP_NUBUS2|OSS_IP_NUBUS3|OSS_IP_NUBUS4|OSS_IP_NUBUS5)
+
+/*
+ * Rom Control Register
+ */
+
+#define OSS_POWEROFF	0x80
+
+/*
+ * OSS Interrupt levels for various sub-systems
+ *
+ * This mapping is layed out with two things in mind: first, we try to keep
+ * things on their own levels to avoid having to do double-dispatches. Second,
+ * the levels match as closely as possible the alternate IRQ mapping mode (aka
+ * "A/UX mode") available on some VIA machines.
+ */
+
+#define OSS_IRQLEV_DISABLED	0
+#define OSS_IRQLEV_IOPISM	1	/* ADB? */
+#define OSS_IRQLEV_SCSI		2
+#define OSS_IRQLEV_NUBUS	3	/* keep this on its own level */
+#define OSS_IRQLEV_IOPSCC	4	/* matches VIA alternate mapping */
+#define OSS_IRQLEV_SOUND	5	/* matches VIA alternate mapping */
+#define OSS_IRQLEV_60HZ		6	/* matches VIA alternate mapping */
+#define OSS_IRQLEV_VIA1		6	/* matches VIA alternate mapping */
+#define OSS_IRQLEV_PARITY	7	/* matches VIA alternate mapping */
+
+#ifndef __ASSEMBLY__
+
+struct mac_oss {
+    __u8  irq_level[0x10];	/* [0x000-0x00f] Interrupt levels */
+    __u8  padding0[0x1F2];	/* [0x010-0x201] IO space filler */
+    __u16 irq_pending;		/* [0x202-0x203] pending interrupts bits */
+    __u8  rom_ctrl;		/* [0x204-0x204] ROM cntl reg (for poweroff) */
+    __u8  padding1[0x2];	/* [0x205-0x206] currently unused by A/UX */
+    __u8  ack_60hz;		/* [0x207-0x207] 60 Hz ack. */
+};
+
+extern volatile struct mac_oss *oss;
+extern int oss_present;
+
+#endif /* __ASSEMBLY__ */
diff --git a/include/asm-m68k/mac_psc.h b/include/asm-m68k/mac_psc.h
index de22bbefe..75463aafc 100644
--- a/include/asm-m68k/mac_psc.h
+++ b/include/asm-m68k/mac_psc.h
@@ -1,73 +1,243 @@
 /*
- *	Apple Peripheral System Controller (PSC)
+ * Apple Peripheral System Controller (PSC)
  *
- *	The PSC is used on the AV Macs to control IO functions not handled
- *	by the VIAs (Ethernet, DSP, SCC).
+ * The PSC is used on the AV Macs to control IO functions not handled
+ * by the VIAs (Ethernet, DSP, SCC, Sound). This includes nine DMA
+ * channels.
+ *
+ * The first seven DMA channels appear to be "one-shot" and are actually
+ * sets of two channels; one member is active while the other is being
+ * configured, and then you flip the active member and start all over again.
+ * The one-shot channels are grouped together and are:
+ *
+ * 1. SCSI
+ * 2. Ethernet Read
+ * 3. Ethernet Write
+ * 4. Floppy Disk Controller
+ * 5. SCC Channel A Receive
+ * 6. SCC Channel B Receive
+ * 7. SCC Channel A Transmit
+ *
+ * The remaining two channels are handled somewhat differently. They appear
+ * to be closely tied and share one set of registers. They also seem to run
+ * continuously, although how you keep the buffer filled in this scenario is
+ * not understood as there seems to be only one input and one output buffer
+ * pointer.
+ * 
+ * Much of this was extrapolated from what was known about the Ethernet
+ * registers and subsequently confirmed using MacsBug (ie by pinging the
+ * machine with easy-to-find patterns and looking for them in the DMA
+ * buffers, or by sending a file over the serial ports and finding the
+ * file in the buffers.)
+ *
+ * 1999-05-25 (jmt)
  */
- 
-#define PSCBASE		0x50F31000
+
+#define PSC_BASE	(0x50F31000)
 
 /*
- *	The IER/IFR registers work like the VIA, except that it has 4
- *	of them each on different interrupt levels.
+ * The IER/IFR registers work like the VIA, except that it has 4
+ * of them each on different interrupt levels, and each register
+ * set only seems to handle four interrupts instead of seven.
+ *
+ * To access a particular set of registers, add 0xn0 to the base
+ * where n = 3,4,5 or 6.
  */
  
-#define pIFR3		0x130
-#define pIFR4		0x140
-#define pIFR5		0x150
-#define pIFR6		0x160
+#define pIFRbase	0x100
+#define pIERbase	0x104
 
-#define pIER3		0x134
-#define pIER4		0x144
-#define pIER5		0x154
-#define pIER6		0x164
+/*
+ * One-shot DMA control registers
+ */
+
+#define PSC_CTL_BASE	0xC00
+
+#define PSC_SCSI_CTL	0xC00
+#define PSC_ENETRD_CTL  0xC10
+#define PSC_ENETWR_CTL  0xC20
+#define PSC_FDC_CTL	0xC30
+#define PSC_SCCA_CTL	0xC40
+#define PSC_SCCB_CTL	0xC50
+#define PSC_SCCATX_CTL	0xC60
 
 /*
- *	Ethernet Control Registers
+ * DMA channels. Add +0x10 for the second channel in the set.
+ * You're supposed to use one channel while the other runs and
+ * then flip channels and do the whole thing again.
  */
- 
-#define PSC_ENETRD_CTL  0xc10
-#define PSC_ENETWR_CTL  0xc20
+
+#define PSC_ADDR_BASE	0x1000
+#define PSC_LEN_BASE	0x1004
+#define PSC_CMD_BASE	0x1008
+
+#define PSC_SCSI_ADDR	0x1000 	/* confirmed */
+#define PSC_SCSI_LEN	0x1004 	/* confirmed */
+#define PSC_SCSI_CMD	0x1008 	/* confirmed */
+#define PSC_ENETRD_ADDR 0x1020	/* confirmed */
+#define PSC_ENETRD_LEN  0x1024	/* confirmed */
+#define PSC_ENETRD_CMD  0x1028	/* confirmed */
+#define PSC_ENETWR_ADDR 0x1040	/* confirmed */
+#define PSC_ENETWR_LEN  0x1044	/* confirmed */
+#define PSC_ENETWR_CMD  0x1048	/* confirmed */
+#define PSC_FDC_ADDR	0x1060	/* strongly suspected */
+#define PSC_FDC_LEN	0x1064	/* strongly suspected */
+#define PSC_FDC_CMD	0x1068	/* strongly suspected */
+#define PSC_SCCA_ADDR	0x1080	/* confirmed */
+#define PSC_SCCA_LEN	0x1084	/* confirmed */
+#define PSC_SCCA_CMD	0x1088	/* confirmed */
+#define PSC_SCCB_ADDR	0x10A0	/* confirmed */
+#define PSC_SCCB_LEN	0x10A4	/* confirmed */
+#define PSC_SCCB_CMD	0x10A8	/* confirmed */
+#define PSC_SCCATX_ADDR	0x10C0	/* confirmed */
+#define PSC_SCCATX_LEN	0x10C4	/* confirmed */
+#define PSC_SCCATX_CMD	0x10C8	/* confirmed */
 
 /*
- *	Receive DMA channel (add +0x10 for 2nd channel)
+ * Free-running DMA registers. The only part known for sure are the bits in
+ * the control register, the buffer addresses and the buffer length. Everything
+ * else is anybody's guess.
+ *
+ * These registers seem to be mirrored every thirty-two bytes up until offset
+ * 0x300. It's safe to assume then that a new set of registers starts there.
  */
- 
-#define PSC_ENETRD_ADDR 0x1020 
-#define PSC_ENETRD_LEN  0x1024
-#define PSC_ENETRD_CMD  0x1028
+
+#define PSC_SND_CTL	0x200	/*
+				 * [ 16-bit ]
+				 * Sound (Singer?) control register.
+				 *
+				 * bit 0  : ????
+				 * bit 1  : ????
+				 * bit 2  : Set to one to enable sound
+				 *          output. Possibly a mute flag.
+				 * bit 3  : ????
+				 * bit 4  : ????
+				 * bit 5  : ????
+				 * bit 6  : Set to one to enable pass-thru
+				 *          audio. In this mode the audio data
+				 *          seems to appear in both the input
+				 *          buffer and the output buffer.
+				 * bit 7  : Set to one to activate the
+				 *          sound input DMA or zero to
+				 *          disable it.
+				 * bit 8  : Set to one to activate the
+				 *          sound output DMA or zero to
+				 *          disable it.
+				 * bit 9  : \
+				 * bit 11 :  |
+				 *          These two bits control the sample
+				 *          rate. Usually set to binary 10 and
+				 *	    MacOS 8.0 says I'm at 48 KHz. Using
+				 *	    a binary value of 01 makes things
+				 *	    sound about 1/2 speed (24 KHz?) and
+				 *          binary 00 is slower still (22 KHz?)
+				 *
+				 * Setting this to 0x0000 is a good way to
+				 * kill all DMA at boot time so that the
+				 * PSC won't overwrite the kernel image
+				 * with sound data.
+				 */
 
 /*
- *	Transmit DMA channel (add +0x10 for 2nd channel)
+ * 0x0202 - 0x0203 is unused. Writing there
+ * seems to clobber the control register.
  */
- 
-#define PSC_ENETWR_ADDR 0x1040
-#define PSC_ENETWR_LEN  0x1044
-#define PSC_ENETWR_CMD  0x1048
+
+#define PSC_SND_SOURCE	0x204	/*
+				 * [ 32-bit ]
+				 * Controls input source and volume:
+				 *
+				 * bits 12-15 : input source volume, 0 - F
+				 * bits 16-19 : unknown, always 0x5
+				 * bits 20-23 : input source selection:
+				 *                  0x3 = CD Audio
+				 *                  0x4 = External Audio
+				 *
+				 * The volume is definately not the general
+				 * output volume as it doesn't affect the
+				 * alert sound volume.
+				 */
+#define PSC_SND_STATUS1	0x208	/*
+				 * [ 32-bit ]
+				 * Appears to be a read-only status register.
+				 * The usual value is 0x00400002.
+				 */
+#define PSC_SND_HUH3	0x20C	/*
+				 * [ 16-bit ]
+				 * Unknown 16-bit value, always 0x0000.
+				 */
+#define PSC_SND_BITS2GO	0x20E	/*
+				 * [ 16-bit ]
+				 * Counts down to zero from some constant
+				 * value. The value appears to be the
+				 * number of _bits_ remaining before the
+				 * buffer is full, which would make sense
+				 * since Apple's docs say the sound DMA
+				 * channels are 1 bit wide.
+				 */
+#define PSC_SND_INADDR	0x210	/*
+				 * [ 32-bit ]
+				 * Address of the sound input DMA buffer
+				 */
+#define PSC_SND_OUTADDR	0x214	/*
+				 * [ 32-bit ]
+				 * Address of the sound output DMA buffer
+				 */
+#define PSC_SND_LEN	0x218	/*
+				 * [ 16-bit ]
+				 * Length of both buffers in eight-byte units.
+				 */
+#define PSC_SND_HUH4	0x21A	/*
+				 * [ 16-bit ]
+				 * Unknown, always 0x0000.
+				 */
+#define PSC_SND_STATUS2	0x21C	/*
+				 * [ 16-bit ]
+				 * Appears to e a read-only status register.
+				 * The usual value is 0x0200.
+				 */
+#define PSC_SND_HUH5	0x21E	/*
+				 * [ 16-bit ]
+				 * Unknown, always 0x0000.
+				 */
+
+#ifndef __ASSEMBLY__
+
+extern volatile __u8 *psc;
+extern int psc_present;
 
 /*
  *	Access functions
  */
  
-extern volatile unsigned char *psc;
+extern inline void psc_write_byte(int offset, __u8 data)
+{
+	*((volatile __u8 *)(psc + offset)) = data;
+}
+
+extern inline void psc_write_word(int offset, __u16 data)
+{
+	*((volatile __u16 *)(psc + offset)) = data;
+}
 
-extern inline void psc_write_word(int offset, u16 data)
+extern inline void psc_write_long(int offset, __u32 data)
 {
-	*((volatile u16 *)(psc+offset)) = data;
+	*((volatile __u32 *)(psc + offset)) = data;
 }
 
-extern inline void psc_write_long(int offset, u32 data)
+extern inline u8 psc_read_byte(int offset)
 {
-	*((volatile u32 *)(psc+offset)) = data;
+	return *((volatile __u8 *)(psc + offset));
 }
 
 extern inline u16 psc_read_word(int offset)
 {
-	return *((volatile u16 *)(psc+offset));
+	return *((volatile __u16 *)(psc + offset));
 }
 
 extern inline u32 psc_read_long(int offset)
 {
-	return *((volatile u32 *)(psc+offset));
+	return *((volatile __u32 *)(psc + offset));
 }
 
+#endif /* __ASSEMBLY__ */
diff --git a/include/asm-m68k/mac_via.h b/include/asm-m68k/mac_via.h
new file mode 100644
index 000000000..ab8e23d9e
--- /dev/null
+++ b/include/asm-m68k/mac_via.h
@@ -0,0 +1,267 @@
+/*
+ *	6522 Versatile Interface Adapter (VIA)
+ *
+ *	There are two of these on the Mac II. Some IRQ's are vectored
+ *	via them as are assorted bits and bobs - eg rtc, adb. The picture
+ *	is a bit incomplete as the Mac documentation doesnt cover this well
+ */
+ 
+#ifndef _ASM_MAC_VIA_H_
+#define _ASM_MAC_VIA_H_
+
+/*
+ * Base addresses for the VIAs. There are two in every machine,
+ * although on some machines the second is an RBV or an OSS.
+ * The OSS is different enough that it's handled separately.
+ *
+ * Do not use these values directly; use the via1 and via2 variables
+ * instead (and don't forget to check rbv_present when using via2!)
+ */
+
+#define VIA1_BASE	(0x50F00000)
+#define VIA2_BASE	(0x50F02000)
+#define  RBV_BASE	(0x50F26000)
+ 
+/*
+ *	Not all of these are true post MacII I think.
+ *      CSA: probably the ones CHRP marks as 'unused' change purposes
+ *      when the IWM becomes the SWIM.
+ *      http://www.rs6000.ibm.com/resource/technology/chrpio/via5.mak.html
+ *      ftp://ftp.austin.ibm.com/pub/technology/spec/chrp/inwork/CHRP_IORef_1.0.pdf
+ *
+ * also, http://developer.apple.com/technotes/hw/hw_09.html claims the
+ * following changes for IIfx:
+ * VIA1A_vSccWrReq not available and that VIA1A_vSync has moved to an IOP.
+ * Also, "All of the functionality of VIA2 has been moved to other chips".
+ */
+ 
+#define VIA1A_vSccWrReq	0x80	/* SCC write. (input)
+				 * [CHRP] SCC WREQ: Reflects the state of the 
+				 * Wait/Request pins from the SCC.
+				 * [Macintosh Family Hardware]
+				 * as CHRP on SE/30,II,IIx,IIcx,IIci.
+				 * on IIfx, "0 means an active request"
+				 */
+#define VIA1A_vRev8	0x40	/* Revision 8 board ???
+                                 * [CHRP] En WaitReqB: Lets the WaitReq_L
+				 * signal from port B of the SCC appear on
+				 * the PA7 input pin. Output.
+				 * [Macintosh Family] On the SE/30, this
+				 * is the bit to flip screen buffers.
+				 * 0=alternate, 1=main.
+				 * on II,IIx,IIcx,IIci,IIfx this is a bit
+				 * for Rev ID. 0=II,IIx, 1=IIcx,IIci,IIfx
+				 */
+#define VIA1A_vHeadSel	0x20	/* Head select for IWM.
+				 * [CHRP] unused.
+				 * [Macintosh Family] "Floppy disk
+				 * state-control line SEL" on all but IIfx
+				 */
+#define VIA1A_vOverlay	0x10    /* [Macintosh Family] On SE/30,II,IIx,IIcx
+				 * this bit enables the "Overlay" address
+				 * map in the address decoders as it is on
+				 * reset for mapping the ROM over the reset
+				 * vector. 1=use overlay map.
+				 * On the IIci,IIfx it is another bit of the
+				 * CPU ID: 0=normal IIci, 1=IIci with parity
+				 * feature or IIfx.
+				 * [CHRP] En WaitReqA: Lets the WaitReq_L
+				 * signal from port A of the SCC appear
+				 * on the PA7 input pin (CHRP). Output.
+				 * [MkLinux] "Drive Select"
+				 *  (with 0x20 being 'disk head select')
+				 */
+#define VIA1A_vSync	0x08    /* [CHRP] Sync Modem: modem clock select:
+                                 * 1: select the external serial clock to
+				 *    drive the SCC's /RTxCA pin.
+				 * 0: Select the 3.6864MHz clock to drive
+				 *    the SCC cell.
+				 * [Macintosh Family] Correct on all but IIfx
+				 */
+
+/* Macintosh Family Hardware sez: bits 0-2 of VIA1A are volume control
+ * on Macs which had the PWM sound hardware.  Reserved on newer models.
+ * On IIci,IIfx, bits 1-2 are the rest of the CPU ID:
+ * bit 2: 1=IIci, 0=IIfx
+ * bit 1: 1 on both IIci and IIfx.
+ * MkLinux sez bit 0 is 'burnin flag' in this case.
+ * CHRP sez: VIA1A bits 0-2 and 5 are 'unused': if programmed as
+ * inputs, these bits will read 0.
+ */
+#define VIA1A_vVolume	0x07	/* Audio volume mask for PWM */
+#define VIA1A_CPUID0	0x02	/* CPU id bit 0 on RBV, others */
+#define VIA1A_CPUID1	0x04	/* CPU id bit 0 on RBV, others */
+#define VIA1A_CPUID2	0x10	/* CPU id bit 0 on RBV, others */
+#define VIA1A_CPUID3	0x40	/* CPU id bit 0 on RBV, others */
+ 	
+/* Info on VIA1B is from Macintosh Family Hardware & MkLinux.
+ * CHRP offers no info. */
+#define VIA1B_vSound	0x80	/* Sound enable (for compatibility with
+				 * PWM hardware) 0=enabled.
+				 * Also, on IIci w/parity, shows parity error
+				 * 0=error, 1=OK. */
+#define VIA1B_vMystery	0x40    /* On IIci, parity enable. 0=enabled,1=disabled
+				 * On SE/30, vertical sync interrupt enable.
+				 * 0=enabled. This vSync interrupt shows up
+				 * as a slot $E interrupt. */
+#define VIA1B_vADBS2	0x20	/* ADB state input bit 1 (unused on IIfx) */
+#define VIA1B_vADBS1	0x10	/* ADB state input bit 0 (unused on IIfx) */
+#define VIA1B_vADBInt	0x08	/* ADB interrupt 0=interrupt (unused on IIfx)*/
+#define VIA1B_vRTCEnb	0x04	/* Enable Real time clock. 0=enabled. */
+#define VIA1B_vRTCClk	0x02    /* Real time clock serial-clock line. */
+#define VIA1B_vRTCData	0x01    /* Real time clock serial-data line. */
+
+/* MkLinux defines the following "VIA1 Register B contents where they
+ * differ from standard VIA1".  From the naming scheme, we assume they
+ * correspond to a VIA work-alike named 'EVR'. */
+#define	EVRB_XCVR	0x08	/* XCVR_SESSION* */
+#define	EVRB_FULL	0x10	/* VIA_FULL */
+#define	EVRB_SYSES	0x20	/* SYS_SESSION */
+#define	EVRB_AUXIE	0x00	/* Enable A/UX Interrupt Scheme */
+#define	EVRB_AUXID	0x40	/* Disable A/UX Interrupt Scheme */
+#define	EVRB_SFTWRIE	0x00	/* Software Interrupt ReQuest */
+#define	EVRB_SFTWRID	0x80	/* Software Interrupt ReQuest */
+
+/*
+ *	VIA2 A register is the interrupt lines raised off the nubus 
+ *	slots.
+ *      The below info is from 'Macintosh Family Hardware.'
+ *      MkLinux calls the 'IIci internal video IRQ' below the 'RBV slot 0 irq.'
+ *      It also notes that the slot $9 IRQ is the 'Ethernet IRQ' and
+ *      defines the 'Video IRQ' as 0x40 for the 'EVR' VIA work-alike.
+ *      Perhaps OSS uses vRAM1 and vRAM2 for ADB.
+ */
+ 
+#define VIA2A_vRAM1	0x80	/* RAM size bit 1 (IIci: reserved) */
+#define VIA2A_vRAM0	0x40	/* RAM size bit 0 (IIci: internal video IRQ) */
+#define VIA2A_vIRQE	0x20	/* IRQ from slot $E */
+#define VIA2A_vIRQD	0x10	/* IRQ from slot $D */
+#define VIA2A_vIRQC	0x08	/* IRQ from slot $C */
+#define VIA2A_vIRQB	0x04	/* IRQ from slot $B */
+#define VIA2A_vIRQA	0x02	/* IRQ from slot $A */
+#define VIA2A_vIRQ9	0x01	/* IRQ from slot $9 */
+
+/* RAM size bits decoded as follows:
+ * bit1 bit0  size of ICs in bank A
+ *  0    0    256 kbit
+ *  0    1    1 Mbit
+ *  1    0    4 Mbit
+ *  1    1   16 Mbit
+ */
+ 
+/*
+ *	Register B has the fun stuff in it
+ */
+ 
+#define VIA2B_vVBL	0x80	/* VBL output to VIA1 (60.15Hz) driven by
+				 * timer T1.
+				 * on IIci, parity test: 0=test mode.
+				 * [MkLinux] RBV_PARODD: 1=odd,0=even. */
+#define VIA2B_vSndJck	0x40	/* External sound jack status.
+				 * 0=plug is inserted.  On SE/30, always 0 */
+#define VIA2B_vTfr0	0x20	/* Transfer mode bit 0 ack from NuBus */
+#define VIA2B_vTfr1	0x10	/* Transfer mode bit 1 ack from NuBus */
+#define VIA2B_vMode32	0x08	/* 24/32bit switch - doubles as cache flush
+				 * on II, AMU/PMMU control.
+				 *   if AMU, 0=24bit to 32bit translation
+				 *   if PMMU, 1=PMMU is accessing page table.
+				 * on SE/30 tied low.
+				 * on IIx,IIcx,IIfx, unused.
+				 * on IIci/RBV, cache control. 0=flush cache.
+				 */
+#define VIA2B_vPower	0x04	/* Power off, 0=shut off power.
+				 * on SE/30 this signal sent to PDS card. */
+#define VIA2B_vBusLk	0x02	/* Lock NuBus transactions, 0=locked.
+				 * on SE/30 sent to PDS card. */
+#define VIA2B_vCDis	0x01	/* Cache control. On IIci, 1=disable cache card
+				 * on others, 0=disable processor's instruction
+				 * and data caches. */
+
+/* Apple sez: http://developer.apple.com/technotes/ov/ov_04.html
+ * Another example of a valid function that has no ROM support is the use
+ * of the alternate video page for page-flipping animation. Since there
+ * is no ROM call to flip pages, it is necessary to go play with the
+ * right bit in the VIA chip (6522 Versatile Interface Adapter).
+ * [CSA: don't know which one this is, but it's one of 'em!]
+ */
+ 
+/*
+ *	6522 registers - see databook.
+ * CSA: Assignments for VIA1 confirmed from CHRP spec.
+ */ 
+
+/* partial address decode.  0xYYXX : XX part for RBV, YY part for VIA */
+/* Note: 15 VIA regs, 8 RBV regs */
+
+#define vBufB	0x0000	/* [VIA/RBV]  Register B */
+#define vBufAH	0x0200  /* [VIA only] Buffer A, with handshake. DON'T USE! */
+#define vDirB	0x0400  /* [VIA only] Data Direction Register B. */
+#define vDirA	0x0600  /* [VIA only] Data Direction Register A. */
+#define vT1CL	0x0800  /* [VIA only] Timer one counter low. */
+#define vT1CH	0x0a00  /* [VIA only] Timer one counter high. */
+#define vT1LL	0x0c00  /* [VIA only] Timer one latches low. */
+#define vT1LH	0x0e00  /* [VIA only] Timer one latches high. */
+#define vT2CL	0x1000  /* [VIA only] Timer two counter low. */
+#define vT2CH	0x1200  /* [VIA only] Timer two counter high. */
+#define vSR	0x1400  /* [VIA only] Shift register. */
+#define vACR	0x1600  /* [VIA only] Auxilary control register. */
+#define vPCR	0x1800  /* [VIA only] Peripheral control register. */
+                        /*            CHRP sez never ever to *write* this.
+			 *            Mac family says never to *change* this.
+			 * In fact we need to initialize it once at start. */
+#define vIFR	0x1a00  /* [VIA/RBV]  Interrupt flag register. */
+#define vIER	0x1c00  /* [VIA/RBV]  Interrupt enable register. */
+#define vBufA	0x1e00  /* [VIA/RBV] register A (no handshake) */
+
+/* The RBV only decodes the bottom eight address lines; the VIA doesn't
+ * decode the bottom eight -- so vBufB | rBufB will always get you BufB */
+/* CSA: in fact, only bits 0,1, and 4 seem to be decoded.
+ * BUT note the values for rIER and rIFR, where the top 8 bits *do* seem
+ * to matter.  In fact *all* of the top 8 bits seem to matter; 
+ * setting rIER=0x1813 and rIFR=0x1803 doesn't work, either.
+ * Perhaps some sort of 'compatibility mode' is built-in? [21-May-1999]
+ */
+
+#define rBufB   0x0000  /* [VIA/RBV]  Register B */
+#define rExp	0x0001	/* [RBV only] RBV future expansion (always 0) */
+#define rSIFR	0x0002  /* [RBV only] RBV slot interrupts register. */
+#define rIFR	0x1a03  /* [VIA/RBV]  RBV interrupt flag register. */
+#define rMonP   0x0010  /* [RBV only] RBV video monitor type. */
+#define rChpT   0x0011  /* [RBV only] RBV test mode register (reads as 0). */
+#define rSIER   0x0012  /* [RBV only] RBV slot interrupt enables. */
+#define rIER    0x1c13  /* [VIA/RBV]  RBV interrupt flag enable register. */
+#define rBufA	rSIFR   /* the 'slot interrupts register' is BufA on a VIA */
+
+/*
+ * Video monitor parameters, for rMonP:
+ */
+#define RBV_DEPTH  0x07	/* bits per pixel: 000=1,001=2,010=4,011=8 */
+#define RBV_MONID  0x38	/* monitor type, as below. */
+#define RBV_VIDOFF 0x40	/* 1 turns off onboard video */
+/* Supported monitor types: */
+#define MON_15BW   (1<<3) /* 15" BW portrait. */
+#define MON_IIGS   (2<<3) /* 12" color (modified IIGS monitor). */
+#define MON_15RGB  (5<<3) /* 15" RGB portrait. */
+#define MON_12OR13 (6<<3) /* 12" BW or 13" RGB. */
+#define MON_NONE   (7<<3) /* No monitor attached. */
+
+/* To clarify IER manipulations */
+#define IER_SET_BIT(b) (0x80 | (1<<(b)) )
+#define IER_CLR_BIT(b) (0x7F & (1<<(b)) )
+
+#ifndef __ASSEMBLY__
+
+extern volatile __u8 *via1,*via2;
+extern int rbv_present,via_alt_mapping;
+extern __u8 rbv_clear;
+
+extern __inline__ int rbv_set_video_bpp(int bpp) {
+	char val = (bpp==1)?0:(bpp==2)?1:(bpp==4)?2:(bpp==8)?3:-1;
+	if (!rbv_present || val<0) return -1;
+	via2[rMonP] = (via2[rMonP] & ~RBV_DEPTH) | val;
+	return 0;
+}
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* _ASM_MAC_VIA_H_ */
diff --git a/include/asm-m68k/machdep.h b/include/asm-m68k/machdep.h
index ff785fb6e..864f09ecd 100644
--- a/include/asm-m68k/machdep.h
+++ b/include/asm-m68k/machdep.h
@@ -30,6 +30,8 @@ extern void (*mach_gettod)(int *year, int *mon, int *day, int *hour,
 extern int (*mach_hwclk)(int, struct hwclk_time*);
 extern int (*mach_set_clock_mmss)(unsigned long);
 extern void (*mach_reset)( void );
+extern void (*mach_halt)( void );
+extern void (*mach_power_off)( void );
 extern unsigned long (*mach_hd_init) (unsigned long, unsigned long);
 extern void (*mach_hd_setup)(char *, int *);
 extern long mach_max_dma_address;
diff --git a/include/asm-m68k/machines.h b/include/asm-m68k/machines.h
new file mode 100644
index 000000000..da6015a90
--- /dev/null
+++ b/include/asm-m68k/machines.h
@@ -0,0 +1,87 @@
+/* $Id: machines.h,v 1.4 1995/11/25 02:31:58 davem Exp $
+ * machines.h:  Defines for taking apart the machine type value in the
+ *              idprom and determining the kind of machine we are on.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Sun3/3x models added by David Monro (davidm@psrg.cs.usyd.edu.au)
+ */
+#ifndef _SPARC_MACHINES_H
+#define _SPARC_MACHINES_H
+
+struct Sun_Machine_Models {
+	char *name;
+	unsigned char id_machtype;
+};
+
+/* Current number of machines we know about that has an IDPROM
+ * machtype entry including one entry for the 0x80 OBP machines.
+ */
+// reduced along with table in arch/m68k/sun3/idprom.c
+// sun3 port doesn't need to know about sparc machines.
+//#define NUM_SUN_MACHINES   23
+#define NUM_SUN_MACHINES  8
+
+extern struct Sun_Machine_Models Sun_Machines[NUM_SUN_MACHINES];
+
+/* The machine type in the idprom area looks like this:
+ *
+ * ---------------
+ * | ARCH | MACH |
+ * ---------------
+ *  7    4 3    0
+ *
+ * The ARCH field determines the architecture line (sun4, sun4c, etc).
+ * The MACH field determines the machine make within that architecture.
+ */
+
+#define SM_ARCH_MASK  0xf0
+#define SM_SUN3       0x10
+#define SM_SUN4       0x20
+#define SM_SUN3X      0x40
+#define SM_SUN4C      0x50
+#define SM_SUN4M      0x70
+#define SM_SUN4M_OBP  0x80
+
+#define SM_TYP_MASK   0x0f
+/* Sun3 machines */
+#define SM_3_160      0x01    /* Sun 3/160 series */
+#define SM_3_50       0x02    /* Sun 3/50 series */
+#define SM_3_260      0x03    /* Sun 3/260 series */
+#define SM_3_110      0x04    /* Sun 3/110 series */
+#define SM_3_60       0x07    /* Sun 3/60 series */
+#define SM_3_E        0x08    /* Sun 3/E series */
+
+/* Sun3x machines */
+#define SM_3_460      0x01    /* Sun 3/460 (460,470,480) series */
+#define SM_3_80       0x02    /* Sun 3/80 series */
+
+/* Sun4 machines */
+#define SM_4_260      0x01    /* Sun 4/200 series */
+#define SM_4_110      0x02    /* Sun 4/100 series */
+#define SM_4_330      0x03    /* Sun 4/300 series */
+#define SM_4_470      0x04    /* Sun 4/400 series */
+
+/* Sun4c machines                Full Name              - PROM NAME */
+#define SM_4C_SS1     0x01    /* Sun4c SparcStation 1   - Sun 4/60  */
+#define SM_4C_IPC     0x02    /* Sun4c SparcStation IPC - Sun 4/40  */
+#define SM_4C_SS1PLUS 0x03    /* Sun4c SparcStation 1+  - Sun 4/65  */
+#define SM_4C_SLC     0x04    /* Sun4c SparcStation SLC - Sun 4/20  */
+#define SM_4C_SS2     0x05    /* Sun4c SparcStation 2   - Sun 4/75  */
+#define SM_4C_ELC     0x06    /* Sun4c SparcStation ELC - Sun 4/25  */
+#define SM_4C_IPX     0x07    /* Sun4c SparcStation IPX - Sun 4/50  */
+
+/* Sun4m machines, these predate the OpenBoot.  These values only mean
+ * something if the value in the ARCH field is SM_SUN4M, if it is
+ * SM_SUN4M_OBP then you have the following situation:
+ * 1) You either have a sun4d, a sun4e, or a recently made sun4m.
+ * 2) You have to consult OpenBoot to determine which machine this is.
+ */
+#define SM_4M_SS60    0x01    /* Sun4m SparcSystem 600                  */
+#define SM_4M_SS50    0x02    /* Sun4m SparcStation 10                  */
+#define SM_4M_SS40    0x03    /* Sun4m SparcStation 5                   */
+
+/* Sun4d machines -- N/A */
+/* Sun4e machines -- N/A */
+/* Sun4u machines -- N/A */
+
+#endif /* !(_SPARC_MACHINES_H) */
diff --git a/include/asm-m68k/machw.h b/include/asm-m68k/machw.h
index 56da64f3b..e84641840 100644
--- a/include/asm-m68k/machw.h
+++ b/include/asm-m68k/machw.h
@@ -25,6 +25,7 @@
 
 #include <linux/types.h>
 
+#if 0
 /* Mac SCSI Controller 5380 */
 
 #define	MAC_5380_BAS	(0x50F10000) /* This is definitely wrong!! */
@@ -63,65 +64,7 @@ struct MAC_SCC
   u_char cha_b_data;
  };
 # define mac_scc ((*(volatile struct SCC*)MAC_SCC_BAS))
-
-/*
-** VIA 6522
-*/
-
-#define VIA1_BAS	(0x50F00000)
-#define VIA2_BAS	(0x50F02000)
-#define VIA2_BAS_IIci	(0x50F26000)
-struct VIA
- {
-  u_char buf_b;
-  u_char dummy1[0x199];
-  u_char buf_a;
-  u_char dummy2[0x199];
-  u_char dir_b;
-  u_char dummy3[0x199];
-  u_char dir_a;
-  u_char dummy4[0x199];
-  u_char timer1_cl;
-  u_char dummy5[0x199];
-  u_char timer1_ch;
-  u_char dummy6[0x199];
-  u_char timer1_ll;
-  u_char dummy7[0x199];
-  u_char timer1_lh;
-  u_char dummy8[0x199];
-  u_char timer2_cl;
-  u_char dummy9[0x199];
-  u_char timer2_ch;
-  u_char dummy10[0x199];
-  u_char sr;
-  u_char dummy11[0x199];
-  u_char acr;
-  u_char dummy12[0x199];
-  u_char pcr;
-  u_char dummy13[0x199];
-  u_char int_fl;
-  u_char dummy14[0x199];
-  u_char int_en;
-  u_char dummy15[0x199];
-  u_char anr;
-  u_char dummy16[0x199];
- };
-
-# define via_1         ((*(volatile struct VIA *)VIA1_BAS))
-# define via_2         ((*(volatile struct VIA *)VIA2_BAS))
-# define via1_regp     ((volatile unsigned char *)VIA1_BAS)
- 
-/*
- * OSS/RBV base address 
- */
-
-#define OSS_BAS		0x50f1a000
-#define PSC_BAS		0x50f31000
-
-/* move to oss.h?? */
-#define nIFR	0x203
-#define oIFR	0x202
-
+#endif
 
 /* hardware stuff */
 
diff --git a/include/asm-m68k/macintosh.h b/include/asm-m68k/macintosh.h
index 28dad71ca..40905e74d 100644
--- a/include/asm-m68k/macintosh.h
+++ b/include/asm-m68k/macintosh.h
@@ -6,6 +6,7 @@
  */
  
 extern void mac_reset(void);
+extern void mac_poweroff(void);
 extern void mac_init_IRQ(void);
 extern int mac_request_irq (unsigned int, void (*)(int, void *, 
 				struct pt_regs *),
@@ -13,6 +14,7 @@ extern int mac_request_irq (unsigned int, void (*)(int, void *,
 extern void mac_free_irq(unsigned int, void *);
 extern void mac_enable_irq(unsigned int);
 extern void mac_disable_irq(unsigned int);
+extern int mac_irq_pending(unsigned int);
 extern int mac_get_irq_list(char *);
 #if 0
 extern void mac_default_handler(int irq);
@@ -21,7 +23,6 @@ extern void mac_identify(void);
 extern void mac_report_hardware(void);
 extern void mac_debugging_penguin(int);
 extern void mac_boom(int);
-extern void mac_video_setup(char *,int *);
 
 /*
  *	Floppy driver magic hook - probably shouldnt be here
@@ -58,6 +59,7 @@ struct mac_model
 #define MAC_ADB_CUDA		3
 #define MAC_ADB_PB1		4
 #define MAC_ADB_PB2		5
+#define MAC_ADB_IOP		6
 
 #define MAC_VIA_II		1
 #define MAC_VIA_IIci		2
@@ -131,6 +133,7 @@ struct mac_model
 #define MAC_MODEL_P550		80	/* aka: LC550, P560 */
 #define MAC_MODEL_CCLII		83	/* aka: P275 */
 #define MAC_MODEL_PB165		84
+#define MAC_MODEL_PB190		85	/* aka: PB190CS */
 #define MAC_MODEL_TV		88
 #define MAC_MODEL_P475		89	/* aka: LC475, P476 */
 #define MAC_MODEL_P475F		90	/* aka: P475 w/ FPU (no LC040) */
@@ -141,7 +144,6 @@ struct mac_model
 #define MAC_MODEL_PB280		102
 #define MAC_MODEL_PB280C	103
 #define MAC_MODEL_PB150		115
-#define MAC_MODEL_PB190		122	/* aka: PB190CS */
 
 extern struct mac_model *macintosh_config;
  
diff --git a/include/asm-m68k/macints.h b/include/asm-m68k/macints.h
index e731c0e7f..1014df89d 100644
--- a/include/asm-m68k/macints.h
+++ b/include/asm-m68k/macints.h
@@ -14,38 +14,49 @@
 
 #include <asm/irq.h>
 
-/*
-** Macintosh Interrupt sources.
-**
-** Note: these are all routed via the generic VIA interrupt routine!
-**
-*/
+/* Setting this prints debugging info for unclaimed interrupts */
+
+#define DEBUG_SPURIOUS
+
+/* Setting this prints debugging info on each autovector interrupt */
 
-#define SRC_VIA1		0
-#define SRC_VIA2		1
+/* #define DEBUG_IRQS */
+
+/* Setting this prints debugging info on each Nubus interrupt */
+
+/* #define DEBUG_NUBUS_INT */
+
+/* Setting this prints debugging info on irqs as they enabled and disabled. */
+
+/* #define DEBUG_IRQUSE */
+
+/*
+ * Base IRQ number for all Mac68K interrupt sources. Each source
+ * has eight indexes (base -> base+7).
+ */
 
 #define VIA1_SOURCE_BASE	8
 #define VIA2_SOURCE_BASE	16
-#define RBV_SOURCE_BASE		24
-#define MAC_SCC_SOURCE_BASE	32
+#define MAC_SCC_SOURCE_BASE	24
+#define PSC3_SOURCE_BASE	24
+#define PSC4_SOURCE_BASE	32
+#define PSC5_SOURCE_BASE	40
+#define PSC6_SOURCE_BASE	48
 #define NUBUS_SOURCE_BASE	56
-#define NUBUS_MAX_SOURCES	8
 
-/* FIXME: sources not contigous ... */
-#define NUM_MAC_SOURCES   (NUBUS_SOURCE_BASE+NUBUS_MAX_SOURCES-VIA1_SOURCE_BASE)
+/*
+ * Maximum IRQ number is NUBUS_SOURCE_BASE + 7,
+ * giving us IRQs up through 63.
+ */
 
-#define IRQ_SRC_MASK (VIA1_SOURCE_BASE|VIA2_SOURCE_BASE|MAC_SCC_SOURCE_BASE)
-#define IRQ_IDX_MASK 7
+#define NUM_MAC_SOURCES		64
 
 /* 
- * quick hack to adapt old MACHSPEC-aware source
+ * clean way to separate IRQ into its source and index
  */
-#define	IRQ_IDX(irq)	(irq)
 
-/* interrupt service types */
-#define IRQ_TYPE_SLOW     0
-#define IRQ_TYPE_FAST     1
-#define IRQ_TYPE_PRIO     2
+#define IRQ_SRC(irq)	(irq >> 3)
+#define	IRQ_IDX(irq)	(irq & 7)
 
 #define	IRQ_SPURIOUS      (0)
 
@@ -59,15 +70,15 @@
 #define IRQ_AUTO_7        (7)
 
 /* VIA1 interrupts */
-#define IRQ_VIA1_0	  (8)	/* one second int. */
-#define IRQ_VIA1_1        (9)	/* VBlank int. */
+#define IRQ_VIA1_0	  (8)		/* one second int. */
+#define IRQ_VIA1_1        (9)		/* VBlank int. */
 #define IRQ_MAC_VBL	  IRQ_VIA1_1
-#define IRQ_VIA1_2 	  (10)	/* ADB SR shifts complete */
+#define IRQ_VIA1_2 	  (10)		/* ADB SR shifts complete */
 #define IRQ_MAC_ADB	  IRQ_VIA1_2
 #define IRQ_MAC_ADB_SR	  IRQ_VIA1_2
-#define IRQ_VIA1_3	  (11)	/* ADB SR CB2 ?? */
+#define IRQ_VIA1_3	  (11)		/* ADB SR CB2 ?? */
 #define IRQ_MAC_ADB_SD	  IRQ_VIA1_3
-#define IRQ_VIA1_4        (12)	/* ADB SR ext. clock pulse */
+#define IRQ_VIA1_4        (12)		/* ADB SR ext. clock pulse */
 #define IRQ_MAC_ADB_CL	  IRQ_VIA1_4
 #define IRQ_VIA1_5	  (13)
 #define IRQ_MAC_TIMER_2	  IRQ_VIA1_5
@@ -75,7 +86,7 @@
 #define IRQ_MAC_TIMER_1	  IRQ_VIA1_6
 #define IRQ_VIA1_7        (15)
 
-/* VIA2 interrupts */
+/* VIA2/RBV interrupts */
 #define IRQ_VIA2_0	  (16)
 #define IRQ_MAC_SCSIDRQ	  IRQ_VIA2_0
 #define IRQ_VIA2_1        (17)
@@ -88,18 +99,6 @@
 #define IRQ_VIA2_6	  (22)
 #define IRQ_VIA2_7        (23)
 
-#if 0
-/* RBV interrupts */
-#define IRQ_RBV_0	  (24)
-#define IRQ_RBV_1	  (25)
-#define IRQ_RBV_2 	  (26)
-#define IRQ_RBV_3	  (27)
-#define IRQ_RBV_4	  (28)
-#define IRQ_RBV_5	  (29)
-#define IRQ_RBV_6	  (30)
-#define IRQ_RBV_7	  (31)
-#endif
-
 /* Level 3 (PSC, AV Macs only) interrupts */
 #define IRQ_PSC3_0	  (24)
 #define IRQ_MAC_MACE	  IRQ_PSC3_0
@@ -109,8 +108,8 @@
 
 /* Level 4 (SCC) interrupts */
 #define IRQ_SCC 	     (32)
-#define IRQ_SCCB	     (33)
-#define IRQ_SCCA	     (34)
+#define IRQ_SCCA	     (33)
+#define IRQ_SCCB	     (34)
 #if 0 /* FIXME: are there multiple interrupt conditions on the SCC ?? */
 /* SCC interrupts */
 #define IRQ_SCCB_TX	     (32)
@@ -143,40 +142,21 @@
 #define IRQ_PSC6_3	  (51)
 
 /* Nubus interrupts (cascaded to VIA2) */
-#define IRQ_NUBUS_1	  (56)
+#define IRQ_NUBUS_9	  (56)
+#define IRQ_NUBUS_A	  (57)
+#define IRQ_NUBUS_B	  (58)
+#define IRQ_NUBUS_C	  (59)
+#define IRQ_NUBUS_D	  (60)
+#define IRQ_NUBUS_E	  (61)
+#define IRQ_NUBUS_F	  (62)
+
+#define SLOT2IRQ(x)	  (x + 47)
+#define IRQ2SLOT(x)	  (x - 47)
 
 #define INT_CLK   24576	    /* CLK while int_clk =2.456MHz and divide = 100 */
 #define INT_TICKS 246	    /* to make sched_time = 99.902... HZ */
 
-
-#define VIA_ENABLE	0
-#define VIA_PENDING	1
-#define VIA_SERVICE	2
-#define VIA_MASK	3
-
-/* 
- * Utility functions for setting/clearing bits in the interrupt registers of
- * the VIA. 
- */
-
-void mac_enable_irq( unsigned irq );
-void mac_disable_irq( unsigned irq );
-void mac_turnon_irq( unsigned irq );
-void mac_turnoff_irq( unsigned irq );
-void mac_clear_pending_irq( unsigned irq );
-int  mac_irq_pending( unsigned irq );
-int  nubus_request_irq(int slot, void *dev_id, void (*handler)(int,void *,struct pt_regs *));
-int  nubus_free_irq(int slot);
-
-unsigned long mac_register_nubus_int( void );
-void mac_unregister_nubus_int( unsigned long );
-
-extern void mac_default_handler(int irq, void *dev_id, struct pt_regs *regs);
-extern void via1_irq(int irq, void *dev_id, struct pt_regs *regs);
-extern void via2_irq(int irq, void *dev_id, struct pt_regs *regs);
-extern void  rbv_irq(int irq, void *dev_id, struct pt_regs *regs);
-extern void mac_bang(int irq, void *dev_id, struct pt_regs *regs);
-		
-extern void mac_SCC_handler(int irq, void *dev_id, struct pt_regs *regs);
+extern irq_node_t *mac_irq_list[NUM_MAC_SOURCES];
+extern void mac_do_irq_list(int irq, struct pt_regs *);
 
 #endif /* asm/macints.h */
diff --git a/include/asm-m68k/math-emu.h b/include/asm-m68k/math-emu.h
new file mode 100644
index 000000000..a09dc54f2
--- /dev/null
+++ b/include/asm-m68k/math-emu.h
@@ -0,0 +1,300 @@
+#ifndef _ASM_M68K_SETUP_H
+#define _ASM_M68K_SETUP_H
+
+#include <asm/setup.h>
+#include <linux/linkage.h>
+
+/* Status Register bits */
+
+/* accrued exception bits */
+#define FPSR_AEXC_INEX	3
+#define FPSR_AEXC_DZ	4
+#define FPSR_AEXC_UNFL	5
+#define FPSR_AEXC_OVFL	6
+#define FPSR_AEXC_IOP	7
+
+/* exception status bits */
+#define FPSR_EXC_INEX1	8
+#define FPSR_EXC_INEX2	9
+#define FPSR_EXC_DZ	10
+#define FPSR_EXC_UNFL	11
+#define FPSR_EXC_OVFL	12
+#define FPSR_EXC_OPERR	13
+#define FPSR_EXC_SNAN	14
+#define FPSR_EXC_BSUN	15
+
+/* quotient byte, assumes big-endian, of course */
+#define FPSR_QUOTIENT(fpsr) (*((signed char *) &(fpsr) + 1))
+
+/* condition code bits */
+#define FPSR_CC_NAN	24
+#define FPSR_CC_INF	25
+#define FPSR_CC_Z	26
+#define FPSR_CC_NEG	27
+
+
+/* Control register bits */
+
+/* rounding mode */
+#define	FPCR_ROUND_RN	0		/* round to nearest/even */
+#define FPCR_ROUND_RZ	1		/* round to zero */
+#define FPCR_ROUND_RM	2		/* minus infinity */
+#define FPCR_ROUND_RP	3		/* plus infinity */
+
+/* rounding precision */
+#define FPCR_PRECISION_X	0	/* long double */
+#define FPCR_PRECISION_S	1	/* double */
+#define FPCR_PRECISION_D	2	/* float */
+
+
+/* Flags to select the debugging output */
+#define PDECODE		0
+#define PEXECUTE	1
+#define PCONV		2
+#define PNORM		3
+#define PREGISTER	4
+#define PINSTR		5
+#define PUNIMPL		6
+#define PMOVEM		7
+
+#define PMDECODE	(1<<PDECODE)
+#define PMEXECUTE	(1<<PEXECUTE)
+#define PMCONV		(1<<PCONV)
+#define PMNORM		(1<<PNORM)
+#define PMREGISTER	(1<<PREGISTER)
+#define PMINSTR		(1<<PINSTR)
+#define PMUNIMPL	(1<<PUNIMPL)
+#define PMMOVEM		(1<<PMOVEM)
+
+#ifndef __ASSEMBLY__
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+
+union fp_mant64 {
+	unsigned long long m64;
+	unsigned long m32[2];
+};
+
+union fp_mant128 {
+	unsigned long long m64[2];
+	unsigned long m32[4];
+};
+
+/* internal representation of extended fp numbers */
+struct fp_ext {
+	unsigned char lowmant;
+	unsigned char sign;
+	unsigned short exp;
+	union fp_mant64 mant;
+};
+
+/* C representation of FPU registers */
+/* NOTE: if you change this, you have to change the assembler offsets
+   below and the size in <asm/fpu.h>, too */
+struct fp_data {
+	struct fp_ext fpreg[8];
+	unsigned int fpcr;
+	unsigned int fpsr;
+	unsigned int fpiar;
+	unsigned short prec;
+	unsigned short rnd;
+	struct fp_ext temp[2];
+};
+
+#if FPU_EMU_DEBUG
+extern unsigned int fp_debugprint;
+
+#define dprint(bit, fmt, args...) ({			\
+	if (fp_debugprint & (1 << (bit)))		\
+		printk(fmt, ## args);			\
+})
+#else
+#define dprint(bit, fmt, args...)
+#endif
+
+#define uprint(str) ({					\
+	static int __count = 3;				\
+							\
+	if (__count > 0) {				\
+		printk("You just hit an unimplemented "	\
+		       "fpu instruction (%s)\n", str);	\
+		printk("Please report this to ....\n");	\
+		__count--;				\
+	}						\
+})
+
+#define FPDATA		((struct fp_data *)current->thread.fp)
+
+#else	/* __ASSEMBLY__ */
+
+#define FPDATA		%a2
+
+/* offsets from the base register to the floating point data in the task struct */
+#define FPD_FPREG	(TASK_THREAD+THREAD_FPREG+0)
+#define FPD_FPCR	(TASK_THREAD+THREAD_FPREG+96)
+#define FPD_FPSR	(TASK_THREAD+THREAD_FPREG+100)
+#define FPD_FPIAR	(TASK_THREAD+THREAD_FPREG+104)
+#define FPD_PREC	(TASK_THREAD+THREAD_FPREG+108)
+#define FPD_RND		(TASK_THREAD+THREAD_FPREG+110)
+#define FPD_TEMPFP1	(TASK_THREAD+THREAD_FPREG+112)
+#define FPD_TEMPFP2	(TASK_THREAD+THREAD_FPREG+124)
+#define FPD_SIZEOF	(TASK_THREAD+THREAD_FPREG+136)
+
+/* offsets on the stack to access saved registers,
+ * these are only used during instruction decoding
+ * where we always know how deep we're on the stack.
+ */
+#define FPS_DO		(PT_D0)
+#define FPS_D1		(PT_D1)
+#define FPS_D2		(PT_D2)
+#define FPS_A0		(PT_A0)
+#define FPS_A1		(PT_A1)
+#define FPS_A2		(PT_A2)
+#define FPS_SR		(PT_SR)
+#define FPS_PC		(PT_PC)
+#define FPS_EA		(PT_PC+6)
+#define FPS_PC2		(PT_PC+10)
+
+.macro	fp_get_fp_reg
+	lea	(FPD_FPREG,FPDATA,%d0.w*4),%a0
+	lea	(%a0,%d0.w*8),%a0
+.endm
+
+/* Macros used to get/put the current program counter.
+ * 020/030 use a different stack frame then 040/060, for the
+ * 040/060 the return pc points already to the next location,
+ * so this only needs to be modified for jump instructions.
+ */
+.macro	fp_get_pc dest
+	move.l	(FPS_PC+4,%sp),\dest
+.endm
+
+.macro	fp_put_pc src,jump=0
+	move.l	\src,(FPS_PC+4,%sp)
+.endm
+
+.macro	fp_get_instr_data	f,s,dest,label
+	getuser	\f,%sp@(FPS_PC+4)@(0),\dest,\label,%sp@(FPS_PC+4)
+	addq.l	#\s,%sp@(FPS_PC+4)
+.endm
+
+.macro	fp_get_instr_word	dest,label,addr
+	fp_get_instr_data	w,2,\dest,\label,\addr
+.endm
+
+.macro	fp_get_instr_long	dest,label,addr
+	fp_get_instr_data	l,4,\dest,\label,\addr
+.endm
+
+/* These macros are used to read from/write to user space
+ * on error we jump to the fixup section, load the fault
+ * address into %a0 and jump to the exit.
+ * (derived from <asm/uaccess.h>)
+ */
+.macro	getuser	size,src,dest,label,addr
+|	printf	,"[\size<%08x]",1,\addr
+.Lu1\@:	moves\size	\src,\dest
+
+	.section .fixup,"ax"
+	.even
+.Lu2\@:	move.l	\addr,%a0
+	jra	\label
+	.previous
+
+	.section __ex_table,"a"
+	.align	4
+	.long	.Lu1\@,.Lu2\@
+	.previous
+.endm
+
+.macro	putuser	size,src,dest,label,addr
+|	printf	,"[\size>%08x]",1,\addr
+.Lu1\@:	moves\size	\src,\dest
+.Lu2\@:
+
+	.section .fixup,"ax"
+	.even
+.Lu3\@:	move.l	\addr,%a0
+	jra	\label
+	.previous
+
+	.section __ex_table,"a"
+	.align	4
+	.long	.Lu1\@,.Lu3\@
+	.long	.Lu2\@,.Lu3\@
+	.previous
+.endm
+
+
+.macro	movestack	nr,arg1,arg2,arg3,arg4,arg5
+	.if	\nr
+	movestack	(\nr-1),\arg2,\arg3,\arg4,\arg5
+	move.l	\arg1,-(%sp)
+	.endif
+.endm
+
+.macro	printf	bit=-1,string,nr=0,arg1,arg2,arg3,arg4,arg5
+#ifdef FPU_EMU_DEBUG
+	.data
+.Lpdata\@:
+	.string	"\string"
+	.previous
+
+	movem.l	%d0/%d1/%a0/%a1,-(%sp)
+	.if	\bit+1
+#if 0
+	moveq	#\bit,%d0
+	andw	#7,%d0
+	btst	%d0,fp_debugprint+((31-\bit)/8)
+#else
+	btst	#\bit,fp_debugprint+((31-\bit)/8)
+#endif
+	jeq	.Lpskip\@
+	.endif
+	movestack	\nr,\arg1,\arg2,\arg3,\arg4,\arg5
+	pea	.Lpdata\@
+	jsr	printk
+	lea	((\nr+1)*4,%sp),%sp
+.Lpskip\@:
+	movem.l	(%sp)+,%d0/%d1/%a0/%a1
+#endif
+.endm
+
+.macro	printx	bit,fp
+#ifdef FPU_EMU_DEBUG
+	movem.l	%d0/%a0,-(%sp)
+	lea	\fp,%a0
+#if 0
+	moveq	#'+',%d0
+	tst.w	(%a0)
+	jeq	.Lx1\@
+	moveq	#'-',%d0
+.Lx1\@:	printf	\bit," %c",1,%d0
+	move.l	(4,%a0),%d0
+	bclr	#31,%d0
+	jne	.Lx2\@
+	printf	\bit,"0."
+	jra	.Lx3\@
+.Lx2\@:	printf	\bit,"1."
+.Lx3\@:	printf	\bit,"%08x%08x",2,%d0,%a0@(8)
+	move.w	(2,%a0),%d0
+	ext.l	%d0
+	printf	\bit,"E%04x",1,%d0
+#else
+	printf	\bit," %08x%08x%08x",3,%a0@,%a0@(4),%a0@(8)
+#endif
+	movem.l	(%sp)+,%d0/%a0
+#endif
+.endm
+
+.macro	debug	instr,args
+#ifdef FPU_EMU_DEBUG
+	\instr	\args
+#endif
+.endm
+
+
+#endif	/* __ASSEMBLY__ */
+
+#endif	/* _ASM_M68K_SETUP_H */
diff --git a/include/asm-m68k/mmu_context.h b/include/asm-m68k/mmu_context.h
index 4850dd404..6a41f82e7 100644
--- a/include/asm-m68k/mmu_context.h
+++ b/include/asm-m68k/mmu_context.h
@@ -1,13 +1,159 @@
-#ifndef __68K_MMU_CONTEXT_H
-#define __68K_MMU_CONTEXT_H
+#ifndef __M68K_MMU_CONTEXT_H
+#define __M68K_MMU_CONTEXT_H
 
-/*
- * get a new mmu context.. do we need this on the m68k?
- */
-#define get_mmu_context(x) do { } while (0)
+#ifndef CONFIG_SUN3
 
-#define init_new_context(mm)	do { } while(0)
-#define destroy_context(mm)	do { } while(0)
-#define activate_context(tsk)	do { } while(0)
+#include <asm/setup.h>
+#include <asm/page.h>
 
+extern inline void
+init_new_context(struct task_struct *tsk, struct mm_struct *mm)
+{
+	mm->context = virt_to_phys(mm->pgd);
+}
+
+#define destroy_context(mm)		do { } while(0)
+
+extern inline void switch_mm_0230(struct mm_struct *mm)
+{
+	unsigned long crp[2] = {
+		0x80000000 | _PAGE_TABLE, mm->context
+	};
+	unsigned long tmp;
+
+	asm volatile (".chip 68030");
+
+	/* flush MC68030/MC68020 caches (they are virtually addressed) */
+	asm volatile (
+		"movec %%cacr,%0;"
+		"orw %1,%0; "
+		"movec %0,%%cacr"
+		: "=d" (tmp) : "di" (FLUSH_I_AND_D));
+
+	/* Switch the root pointer. For a 030-only kernel,
+	 * avoid flushing the whole ATC, we only need to
+	 * flush the user entries. The 68851 does this by
+	 * itself. Avoid a runtime check here.
+	 */
+	asm volatile (
+#ifdef CPU_M68030_ONLY
+		"pmovefd %0,%%crp; "
+		"pflush #0,#4"
+#else
+		"pmove %0,%%crp"
+#endif
+		: : "m" (crp[0]));
+
+	asm volatile (".chip 68k");
+}
+
+extern inline void switch_mm_0460(struct mm_struct *mm)
+{
+	asm volatile (".chip 68040");
+
+	/* flush address translation cache (user entries) */
+	asm volatile ("pflushan");
+
+	/* switch the root pointer */
+	asm volatile ("movec %0,%%urp" : : "r" (mm->context));
+
+	if (CPU_IS_060) {
+		unsigned long tmp;
+
+		/* clear user entries in the branch cache */
+		asm volatile (
+			"movec %%cacr,%0; "
+		        "orl %1,%0; "
+		        "movec %0,%%cacr"
+			: "=d" (tmp): "di" (0x00200000));
+	}
+
+	asm volatile (".chip 68k");
+}
+
+static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, struct task_struct *tsk, unsigned cpu)
+{
+	if (prev != next) {
+		if (CPU_IS_020_OR_030)
+			switch_mm_0230(next);
+		else
+			switch_mm_0460(next);
+	}
+}
+
+extern inline void activate_mm(struct mm_struct *prev_mm,
+			       struct mm_struct *next_mm)
+{
+	next_mm->context = virt_to_phys(next_mm->pgd);
+
+	if (CPU_IS_020_OR_030)
+		switch_mm_0230(next_mm);
+	else
+		switch_mm_0460(next_mm);
+}
+
+#else  /* CONFIG_SUN3 */
+#include <asm/sun3mmu.h>
+#include <linux/sched.h>
+
+extern unsigned long get_free_context(struct mm_struct *mm);
+extern void clear_context(unsigned long context);
+extern unsigned char ctx_next_to_die;
+extern unsigned char ctx_live[SUN3_CONTEXTS_NUM];
+
+/* set the context for a new task to unmapped */
+static inline void init_new_context(struct task_struct *tsk, struct mm_struct *mm)
+{
+	mm->context = SUN3_INVALID_CONTEXT;
+}
+
+/* find the context given to this process, and if it hasn't already
+   got one, go get one for it. */
+static inline void get_mmu_context(struct mm_struct *mm)
+{
+	if(mm->context == SUN3_INVALID_CONTEXT)
+		mm->context = get_free_context(mm);
+}
+
+#if 0
+/* we used to clear the context after the process exited.  we still
+   should, things are faster that way...  but very unstable.  so just
+   clear out a context next time we need a new one..  consider this a
+   FIXME. */
+
+/* flush context if allocated... */	
+static inline void destroy_context(struct mm_struct *mm)
+{
+	if(mm->context != SUN3_INVALID_CONTEXT)
+		clear_context(mm->context);
+}
+#else
+/* mark this context as dropped and set it for next death */
+static inline void destroy_context(struct mm_struct *mm) 
+{
+	if(mm->context != SUN3_INVALID_CONTEXT) {
+		ctx_next_to_die = mm->context;
+		ctx_live[mm->context] = 0;
+	}
+}
+#endif
+
+static inline void activate_context(struct mm_struct *mm)
+{
+	get_mmu_context(mm);
+	sun3_put_context(mm->context);
+}
+
+static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, struct task_struct *tsk, unsigned cpu)
+{
+	activate_context(tsk->mm);
+}
+
+extern inline void activate_mm(struct mm_struct *prev_mm,
+			       struct mm_struct *next_mm)
+{
+	activate_context(next_mm);
+}
+
+#endif 
 #endif
diff --git a/include/asm-m68k/movs.h b/include/asm-m68k/movs.h
new file mode 100644
index 000000000..67dbea369
--- /dev/null
+++ b/include/asm-m68k/movs.h
@@ -0,0 +1,55 @@
+#ifndef  __MOVS_H__
+#define __MOVS_H__
+
+/*
+** movs.h
+**
+** Inline assembly macros to generate movs & related instructions
+*/
+
+/* Set DFC register value */
+
+#define SET_DFC(x) \
+        __asm__ __volatile__ (" movec %0,%/dfc" : : "d" (x));
+
+/* Get DFC register value */
+
+#define GET_DFC(x) \
+        __asm__ __volatile__ (" movec %/dfc, %0" : "=d" (x) : );
+
+/* Set SFC register value */
+
+#define SET_SFC(x) \
+        __asm__ __volatile__ (" movec %0,%/sfc" : : "d" (x));
+
+/* Get SFC register value */
+
+#define GET_SFC(x) \
+        __asm__ __volatile__ (" movec %/sfc, %0" : "=d" (x) : );
+
+#define SET_VBR(x) \
+        __asm__ __volatile__ (" movec %0,%/vbr" : : "r" (x));
+
+#define GET_VBR(x) \
+        __asm__ __volatile__ (" movec %/vbr, %0" : "=g" (x) : );
+
+/* Set a byte using the "movs" instruction */
+
+#define SET_CONTROL_BYTE(addr,value) \
+        __asm__ __volatile__ (" movsb %0, %1@" : : "d" (value), "a" (addr));
+
+/* Get a byte using the "movs" instruction */
+
+#define GET_CONTROL_BYTE(addr,value) \
+        __asm__ __volatile__ (" movsb %1@, %0" : "=d" (value) : "a" (addr));
+
+/* Set a (long)word using the "movs" instruction */
+
+#define SET_CONTROL_WORD(addr,value) \
+        __asm__ __volatile__ (" movsl %0, %1@" : : "d" (value), "a" (addr));
+
+/* Get a (long)word using the "movs" instruction */
+
+#define GET_CONTROL_WORD(addr,value) \
+        __asm__ __volatile__ (" movsl %1@, %0" : "=d" (value) : "a" (addr));
+#endif
diff --git a/include/asm-m68k/openprom.h b/include/asm-m68k/openprom.h
new file mode 100644
index 000000000..f855a5f09
--- /dev/null
+++ b/include/asm-m68k/openprom.h
@@ -0,0 +1,309 @@
+/* $Id: openprom.h,v 1.19 1996/09/25 03:51:08 davem Exp $ */
+#ifndef __SPARC_OPENPROM_H
+#define __SPARC_OPENPROM_H
+
+/* openprom.h:  Prom structures and defines for access to the OPENBOOT
+ *              prom routines and data areas.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+/* Empirical constants... */
+#ifdef CONFIG_SUN3
+#define KADB_DEBUGGER_BEGVM     0x0fee0000    /* There is no kadb yet but...*/
+#define LINUX_OPPROM_BEGVM      0x0fef0000
+#define LINUX_OPPROM_ENDVM      0x0ff10000    /* I think this is right - tm */
+#else
+#define KADB_DEBUGGER_BEGVM     0xffc00000    /* Where kern debugger is in virt-mem */
+#define	LINUX_OPPROM_BEGVM	0xffd00000
+#define	LINUX_OPPROM_ENDVM	0xfff00000
+#define	LINUX_OPPROM_MAGIC      0x10010407
+#endif
+
+#ifndef __ASSEMBLY__
+/* V0 prom device operations. */
+struct linux_dev_v0_funcs {
+	int (*v0_devopen)(char *device_str);
+	int (*v0_devclose)(int dev_desc);
+	int (*v0_rdblkdev)(int dev_desc, int num_blks, int blk_st, char *buf);
+	int (*v0_wrblkdev)(int dev_desc, int num_blks, int blk_st, char *buf);
+	int (*v0_wrnetdev)(int dev_desc, int num_bytes, char *buf);
+	int (*v0_rdnetdev)(int dev_desc, int num_bytes, char *buf);
+	int (*v0_rdchardev)(int dev_desc, int num_bytes, int dummy, char *buf);
+	int (*v0_wrchardev)(int dev_desc, int num_bytes, int dummy, char *buf);
+	int (*v0_seekdev)(int dev_desc, long logical_offst, int from);
+};
+
+/* V2 and later prom device operations. */
+struct linux_dev_v2_funcs {
+	int (*v2_inst2pkg)(int d);	/* Convert ihandle to phandle */
+	char * (*v2_dumb_mem_alloc)(char *va, unsigned sz);
+	void (*v2_dumb_mem_free)(char *va, unsigned sz);
+
+	/* To map devices into virtual I/O space. */
+	char * (*v2_dumb_mmap)(char *virta, int which_io, unsigned paddr, unsigned sz);
+	void (*v2_dumb_munmap)(char *virta, unsigned size);
+
+	int (*v2_dev_open)(char *devpath);
+	void (*v2_dev_close)(int d);
+	int (*v2_dev_read)(int d, char *buf, int nbytes);
+	int (*v2_dev_write)(int d, char *buf, int nbytes);
+	int (*v2_dev_seek)(int d, int hi, int lo);
+
+	/* Never issued (multistage load support) */
+	void (*v2_wheee2)(void);
+	void (*v2_wheee3)(void);
+};
+
+struct linux_mlist_v0 {
+	struct linux_mlist_v0 *theres_more;
+	char *start_adr;
+	unsigned num_bytes;
+};
+
+struct linux_mem_v0 {
+	struct linux_mlist_v0 **v0_totphys;
+	struct linux_mlist_v0 **v0_prommap;
+	struct linux_mlist_v0 **v0_available; /* What we can use */
+};
+
+/* Arguments sent to the kernel from the boot prompt. */
+struct linux_arguments_v0 {
+	char *argv[8];
+	char args[100];
+	char boot_dev[2];
+	int boot_dev_ctrl;
+	int boot_dev_unit;
+	int dev_partition;
+	char *kernel_file_name;
+	void *aieee1;           /* XXX */
+};
+
+/* V2 and up boot things. */
+struct linux_bootargs_v2 {
+	char **bootpath;
+	char **bootargs;
+	int *fd_stdin;
+	int *fd_stdout;
+};
+
+#ifdef CONFIG_SUN3
+struct linux_romvec {
+	char		*pv_initsp;		
+	int		(*pv_startmon)(void);
+
+	int		*diagberr;		
+
+	struct linux_arguments_v0 **pv_v0bootargs;
+ 	unsigned	*pv_sun3mem;		
+
+	unsigned char	(*pv_getchar)(void);
+	int		(*pv_putchar)(int ch);
+	int		(*pv_nbgetchar)(void);	
+	int		(*pv_nbputchar)(int ch);
+	unsigned char	*pv_echo;	
+	unsigned char	*pv_insource;
+	unsigned char	*pv_outsink;
+
+	int		(*pv_getkey)(void);		
+	int		(*pv_initgetkey)(void);
+	unsigned int	*pv_translation;
+	unsigned char	*pv_keybid;		
+	int		*pv_screen_x;		
+	int		*pv_screen_y;		
+	struct keybuf	*pv_keybuf;		
+
+	char		*pv_monid;
+
+	/* 
+	 * Frame buffer output and terminal emulation 
+	 */
+
+	int		(*pv_fbwritechar)(char);	
+	int		*pv_fbaddr;		
+	char		**pv_font;		
+	int		(*pv_fbwritestr)(char);	
+
+	void		(*pv_reboot)(char *bootstr);
+
+	/* 
+	 * Line input and parsing 
+	 */
+
+	unsigned char	*pv_linebuf;		
+	unsigned char	**pv_lineptr;		
+	int		*pv_linesize;		
+	int		(*pv_getline)(void);	
+	unsigned char	(*pv_getnextchar)(void);	
+	unsigned char	(*pv_peeknextchar)(void);	
+	int		*pv_fbthere;		
+	int		(*pv_getnum)(void);		
+
+	void		(*pv_printf)(const char *fmt, ...);
+	int		(*pv_printhex)(void);
+
+	unsigned char	*pv_leds;		
+	int		(*pv_setleds)(void);	
+
+	/* 
+	 * Non-maskable interrupt  (nmi) information
+	 */ 
+
+	int		(*pv_nmiaddr)(void);
+	int		(*pv_abortentry)(void);
+	int		*pv_nmiclock;		
+
+	int		*pv_fbtype;
+
+	/* 
+	 * Assorted other things 
+	 */
+
+	unsigned	pv_romvers;
+	struct globram  *pv_globram;		
+	char		*pv_kbdzscc;		
+
+	int		*pv_keyrinit;		
+	unsigned char	*pv_keyrtick; 		
+	unsigned	*pv_memoryavail;	
+	long		*pv_resetaddr;		
+	long		*pv_resetmap;		
+						
+	void		(*pv_halt)(void);	
+	unsigned char	*pv_memorybitmap;	
+	void		(*pv_setctxt)(int ctxt, char *va, int pmeg);
+	void		(*pv_vector_cmd)(void);	
+	int		dummy1z;
+	int		dummy2z;
+	int		dummy3z;
+	int		dummy4z;
+};
+#else
+/* The top level PROM vector. */
+struct linux_romvec {
+	/* Version numbers. */
+	unsigned int pv_magic_cookie;
+	unsigned int pv_romvers;
+	unsigned int pv_plugin_revision;
+	unsigned int pv_printrev;
+
+	/* Version 0 memory descriptors. */
+	struct linux_mem_v0 pv_v0mem;
+
+	/* Node operations. */
+	struct linux_nodeops *pv_nodeops;
+
+	char **pv_bootstr;
+	struct linux_dev_v0_funcs pv_v0devops;
+
+	char *pv_stdin;
+	char *pv_stdout;
+#define	PROMDEV_KBD	0		/* input from keyboard */
+#define	PROMDEV_SCREEN	0		/* output to screen */
+#define	PROMDEV_TTYA	1		/* in/out to ttya */
+#define	PROMDEV_TTYB	2		/* in/out to ttyb */
+
+	/* Blocking getchar/putchar.  NOT REENTRANT! (grr) */
+	int (*pv_getchar)(void);
+	void (*pv_putchar)(int ch);
+
+	/* Non-blocking variants. */
+	int (*pv_nbgetchar)(void);
+	int (*pv_nbputchar)(int ch);
+
+	void (*pv_putstr)(char *str, int len);
+
+	/* Miscellany. */
+	void (*pv_reboot)(char *bootstr);
+	void (*pv_printf)(__const__ char *fmt, ...);
+	void (*pv_abort)(void);
+	__volatile__ int *pv_ticks;
+	void (*pv_halt)(void);
+	void (**pv_synchook)(void);
+
+	/* Evaluate a forth string, not different proto for V0 and V2->up. */
+	union {
+		void (*v0_eval)(int len, char *str);
+		void (*v2_eval)(char *str);
+	} pv_fortheval;
+
+	struct linux_arguments_v0 **pv_v0bootargs;
+
+	/* Get ether address. */
+	unsigned int (*pv_enaddr)(int d, char *enaddr);
+
+	struct linux_bootargs_v2 pv_v2bootargs;
+	struct linux_dev_v2_funcs pv_v2devops;
+
+	int filler[15];
+
+	/* This one is sun4c/sun4 only. */
+	void (*pv_setctxt)(int ctxt, char *va, int pmeg);
+
+	/* Prom version 3 Multiprocessor routines. This stuff is crazy.
+	 * No joke. Calling these when there is only one cpu probably
+	 * crashes the machine, have to test this. :-)
+	 */
+
+	/* v3_cpustart() will start the cpu 'whichcpu' in mmu-context
+	 * 'thiscontext' executing at address 'prog_counter'
+	 */
+	int (*v3_cpustart)(unsigned int whichcpu, int ctxtbl_ptr,
+			   int thiscontext, char *prog_counter);
+
+	/* v3_cpustop() will cause cpu 'whichcpu' to stop executing
+	 * until a resume cpu call is made.
+	 */
+	int (*v3_cpustop)(unsigned int whichcpu);
+
+	/* v3_cpuidle() will idle cpu 'whichcpu' until a stop or
+	 * resume cpu call is made.
+	 */
+	int (*v3_cpuidle)(unsigned int whichcpu);
+
+	/* v3_cpuresume() will resume processor 'whichcpu' executing
+	 * starting with whatever 'pc' and 'npc' were left at the
+	 * last 'idle' or 'stop' call.
+	 */
+	int (*v3_cpuresume)(unsigned int whichcpu);
+};
+#endif
+
+/* Routines for traversing the prom device tree. */
+struct linux_nodeops {
+	int (*no_nextnode)(int node);
+	int (*no_child)(int node);
+	int (*no_proplen)(int node, char *name);
+	int (*no_getprop)(int node, char *name, char *val);
+	int (*no_setprop)(int node, char *name, char *val, int len);
+	char * (*no_nextprop)(int node, char *name);
+};
+
+/* More fun PROM structures for device probing. */
+#define PROMREG_MAX     16
+#define PROMVADDR_MAX   16
+#define PROMINTR_MAX    15
+
+struct linux_prom_registers {
+	int which_io;         /* is this in OBIO space? */
+	char *phys_addr;      /* The physical address of this register */
+	int reg_size;         /* How many bytes does this register take up? */
+};
+
+struct linux_prom_irqs {
+	int pri;    /* IRQ priority */
+	int vector; /* This is foobar, what does it do? */
+};
+
+/* Element of the "ranges" vector */
+struct linux_prom_ranges {
+	unsigned int ot_child_space;
+	unsigned int ot_child_base;		/* Bus feels this */
+	unsigned int ot_parent_space;
+	unsigned int ot_parent_base;		/* CPU looks from here */
+	unsigned int or_size;
+};
+
+#endif /* !(__ASSEMBLY__) */
+
+#endif /* !(__SPARC_OPENPROM_H) */
diff --git a/include/asm-m68k/oplib.h b/include/asm-m68k/oplib.h
index 4ef5f0317..84248e0eb 100644
--- a/include/asm-m68k/oplib.h
+++ b/include/asm-m68k/oplib.h
@@ -1,8 +1,297 @@
-/*
- * prototypes for dummy prom_* routines
+/* $Id: oplib.h,v 1.12 1996/10/31 06:29:13 davem Exp $
+ * oplib.h:  Describes the interface and available routines in the
+ *           Linux Prom library.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
  */
 
+#ifndef __SPARC_OPLIB_H
+#define __SPARC_OPLIB_H
+
+#include <asm/openprom.h>
+
+/* The master romvec pointer... */
+extern struct linux_romvec *romvec;
+
+/* Enumeration to describe the prom major version we have detected. */
+enum prom_major_version {
+	PROM_V0,      /* Original sun4c V0 prom */
+	PROM_V2,      /* sun4c and early sun4m V2 prom */
+	PROM_V3,      /* sun4m and later, up to sun4d/sun4e machines V3 */
+	PROM_P1275,   /* IEEE compliant ISA based Sun PROM, only sun4u */
+        PROM_AP1000,  /* actually no prom at all */
+};
+
+extern enum prom_major_version prom_vers;
+/* Revision, and firmware revision. */
+extern unsigned int prom_rev, prom_prev;
+
+/* Root node of the prom device tree, this stays constant after
+ * initialization is complete.
+ */
+extern int prom_root_node;
+
+/* Pointer to prom structure containing the device tree traversal
+ * and usage utility functions.  Only prom-lib should use these,
+ * users use the interface defined by the library only!
+ */
+extern struct linux_nodeops *prom_nodeops;
+
+/* The functions... */
+
+/* You must call prom_init() before using any of the library services,
+ * preferably as early as possible.  Pass it the romvec pointer.
+ */
+extern void prom_init(struct linux_romvec *rom_ptr);
+
+/* Boot argument acquisition, returns the boot command line string. */
+extern char *prom_getbootargs(void);
+
+/* Device utilities. */
+
+/* Map and unmap devices in IO space at virtual addresses. Note that the
+ * virtual address you pass is a request and the prom may put your mappings
+ * somewhere else, so check your return value as that is where your new
+ * mappings really are!
+ *
+ * Another note, these are only available on V2 or higher proms!
+ */
+extern char *prom_mapio(char *virt_hint, int io_space, unsigned int phys_addr, unsigned int num_bytes);
+extern void prom_unmapio(char *virt_addr, unsigned int num_bytes);
+
+/* Device operations. */
+
+/* Open the device described by the passed string.  Note, that the format
+ * of the string is different on V0 vs. V2->higher proms.  The caller must
+ * know what he/she is doing!  Returns the device descriptor, an int.
+ */
+extern int prom_devopen(char *device_string);
+
+/* Close a previously opened device described by the passed integer
+ * descriptor.
+ */
+extern int prom_devclose(int device_handle);
+
+/* Do a seek operation on the device described by the passed integer
+ * descriptor.
+ */
+extern void prom_seek(int device_handle, unsigned int seek_hival,
+		      unsigned int seek_lowval);
+
+/* Machine memory configuration routine. */
+
+/* This function returns a V0 format memory descriptor table, it has three
+ * entries.  One for the total amount of physical ram on the machine, one
+ * for the amount of physical ram available, and one describing the virtual
+ * areas which are allocated by the prom.  So, in a sense the physical
+ * available is a calculation of the total physical minus the physical mapped
+ * by the prom with virtual mappings.
+ *
+ * These lists are returned pre-sorted, this should make your life easier
+ * since the prom itself is way too lazy to do such nice things.
+ */
+extern struct linux_mem_v0 *prom_meminfo(void);
+
+/* Miscellaneous routines, don't really fit in any category per se. */
+
+/* Reboot the machine with the command line passed. */
+extern void prom_reboot(char *boot_command);
+
+/* Evaluate the forth string passed. */
+extern void prom_feval(char *forth_string);
+
+/* Enter the prom, with possibility of continuation with the 'go'
+ * command in newer proms.
+ */
+extern void prom_cmdline(void);
+
+/* Enter the prom, with no chance of continuation for the stand-alone
+ * which calls this.
+ */
+extern void prom_halt(void);
+
+/* Set the PROM 'sync' callback function to the passed function pointer.
+ * When the user gives the 'sync' command at the prom prompt while the
+ * kernel is still active, the prom will call this routine.
+ *
+ * XXX The arguments are different on V0 vs. V2->higher proms, grrr! XXX
+ */
+typedef void (*sync_func_t)(void);
+extern void prom_setsync(sync_func_t func_ptr);
+
+/* Acquire the IDPROM of the root node in the prom device tree.  This
+ * gets passed a buffer where you would like it stuffed.  The return value
+ * is the format type of this idprom or 0xff on error.
+ */
+extern unsigned char prom_get_idprom(char *idp_buffer, int idpbuf_size);
+
+/* Get the prom major version. */
+extern int prom_version(void);
+
+/* Get the prom plugin revision. */
+extern int prom_getrev(void);
+
+/* Get the prom firmware revision. */
+extern int prom_getprev(void);
+
+/* Character operations to/from the console.... */
+
+/* Non-blocking get character from console. */
+extern int prom_nbgetchar(void);
+
+/* Non-blocking put character to console. */
+extern int prom_nbputchar(char character);
+
+/* Blocking get character from console. */
+extern char prom_getchar(void);
+
+/* Blocking put character to console. */
+extern void prom_putchar(char character);
+
+/* Prom's internal printf routine, don't use in kernel/boot code. */
+void prom_printf(char *fmt, ...);
+
+/* Query for input device type */
+
+enum prom_input_device {
+	PROMDEV_IKBD,			/* input from keyboard */
+	PROMDEV_ITTYA,			/* input from ttya */
+	PROMDEV_ITTYB,			/* input from ttyb */
+	PROMDEV_I_UNK,
+};
+
+extern enum prom_input_device prom_query_input_device(void);
+
+/* Query for output device type */
+
+enum prom_output_device {
+	PROMDEV_OSCREEN,		/* to screen */
+	PROMDEV_OTTYA,			/* to ttya */
+	PROMDEV_OTTYB,			/* to ttyb */
+	PROMDEV_O_UNK,
+};
+
+extern enum prom_output_device prom_query_output_device(void);
+
+/* Multiprocessor operations... */
+
+/* Start the CPU with the given device tree node, context table, and context
+ * at the passed program counter.
+ */
+extern int prom_startcpu(int cpunode, struct linux_prom_registers *context_table,
+			 int context, char *program_counter);
+
+/* Stop the CPU with the passed device tree node. */
+extern int prom_stopcpu(int cpunode);
+
+/* Idle the CPU with the passed device tree node. */
+extern int prom_idlecpu(int cpunode);
+
+/* Re-Start the CPU with the passed device tree node. */
+extern int prom_restartcpu(int cpunode);
+
+/* PROM memory allocation facilities... */
+
+/* Allocated at possibly the given virtual address a chunk of the
+ * indicated size.
+ */
+extern char *prom_alloc(char *virt_hint, unsigned int size);
+
+/* Free a previously allocated chunk. */
+extern void prom_free(char *virt_addr, unsigned int size);
+
+/* Sun4/sun4c specific memory-management startup hook. */
+
+/* Map the passed segment in the given context at the passed
+ * virtual address.
+ */
+extern void prom_putsegment(int context, unsigned long virt_addr,
+			    int physical_segment);
+
+/* PROM device tree traversal functions... */
+
+/* Get the child node of the given node, or zero if no child exists. */
+extern int prom_getchild(int parent_node);
+
+/* Get the next sibling node of the given node, or zero if no further
+ * siblings exist.
+ */
+extern int prom_getsibling(int node);
+
+/* Get the length, at the passed node, of the given property type.
+ * Returns -1 on error (ie. no such property at this node).
+ */
+extern int prom_getproplen(int thisnode, char *property);
+
+/* Fetch the requested property using the given buffer.  Returns
+ * the number of bytes the prom put into your buffer or -1 on error.
+ */
+extern int prom_getproperty(int thisnode, char *property,
+			    char *prop_buffer, int propbuf_size);
+
+/* Acquire an integer property. */
+extern int prom_getint(int node, char *property);
+
+/* Acquire an integer property, with a default value. */
 extern int prom_getintdefault(int node, char *property, int defval);
+
+/* Acquire a boolean property, 0=FALSE 1=TRUE. */
 extern int prom_getbool(int node, char *prop);
-extern void prom_printf(char *fmt, ...);
-extern void prom_halt(void) __attribute__ ((noreturn));
+
+/* Acquire a string property, null string on error. */
+extern void prom_getstring(int node, char *prop, char *buf, int bufsize);
+
+/* Does the passed node have the given "name"? YES=1 NO=0 */
+extern int prom_nodematch(int thisnode, char *name);
+
+/* Puts in buffer a prom name in the form name@x,y or name (x for which_io 
+ * and y for first regs phys address
+ */
+extern int prom_getname(int node, char *buf, int buflen);
+
+/* Search all siblings starting at the passed node for "name" matching
+ * the given string.  Returns the node on success, zero on failure.
+ */
+extern int prom_searchsiblings(int node_start, char *name);
+
+/* Return the first property type, as a string, for the given node.
+ * Returns a null string on error.
+ */
+extern char *prom_firstprop(int node);
+
+/* Returns the next property after the passed property for the given
+ * node.  Returns null string on failure.
+ */
+extern char *prom_nextprop(int node, char *prev_property);
+
+/* Returns 1 if the specified node has given property. */
+extern int prom_node_has_property(int node, char *property);
+
+/* Set the indicated property at the given node with the passed value.
+ * Returns the number of bytes of your value that the prom took.
+ */
+extern int prom_setprop(int node, char *prop_name, char *prop_value,
+			int value_size);
+			
+extern int prom_pathtoinode(char *path);
+extern int prom_inst2pkg(int);
+
+/* Dorking with Bus ranges... */
+
+/* Adjust reg values with the passed ranges. */
+extern void prom_adjust_regs(struct linux_prom_registers *regp, int nregs,
+			     struct linux_prom_ranges *rangep, int nranges);
+
+/* Adjust child ranges with the passed parent ranges. */
+extern void prom_adjust_ranges(struct linux_prom_ranges *cranges, int ncranges,
+			       struct linux_prom_ranges *pranges, int npranges);
+
+/* Apply promlib probed OBIO ranges to registers. */
+extern void prom_apply_obio_ranges(struct linux_prom_registers *obioregs, int nregs);
+
+/* Apply ranges of any prom node (and optionally parent node as well) to registers. */
+extern void prom_apply_generic_ranges(int node, int parent, 
+				      struct linux_prom_registers *sbusregs, int nregs);
+				   
+
+#endif /* !(__SPARC_OPLIB_H) */
diff --git a/include/asm-m68k/page.h b/include/asm-m68k/page.h
index 8cc546aac..6a3d9df66 100644
--- a/include/asm-m68k/page.h
+++ b/include/asm-m68k/page.h
@@ -4,14 +4,27 @@
 #include <linux/config.h>
 
 /* PAGE_SHIFT determines the page size */
-#define PAGE_SHIFT	12
-#define PAGE_SIZE	(1UL << PAGE_SHIFT)
+#ifndef CONFIG_SUN3
+#define PAGE_SHIFT	(12)
+#define PAGE_SIZE	(4096)
+#else
+#define PAGE_SHIFT	(13)
+#define PAGE_SIZE	(8192)
+#endif
 #define PAGE_MASK	(~(PAGE_SIZE-1))
 
 #ifdef __KERNEL__
 
 #include <asm/setup.h>
 
+#if PAGE_SHIFT < 13
+#define KTHREAD_SIZE (8192)
+#else
+#define KTHREAD_SIZE PAGE_SIZE
+#endif
+ 
+#ifndef __ASSEMBLY__
+ 
 #define STRICT_MM_TYPECHECKS
 
 #define get_user_page(vaddr)	__get_free_page(GFP_KERNEL)
@@ -110,7 +123,13 @@ typedef unsigned long pgprot_t;
 #define PAGE_ALIGN(addr)	(((addr)+PAGE_SIZE-1)&PAGE_MASK)
 
 /* This handles the memory map.. */
+#ifndef CONFIG_SUN3
 #define PAGE_OFFSET		0
+#else
+#define PAGE_OFFSET		0x0E000000
+#endif
+
+#ifndef CONFIG_SUN3
 #define __pa(x)			((unsigned long)(x)-PAGE_OFFSET)
 /*
  * A hacky workaround for the problems with mmap() of frame buffer
@@ -128,8 +147,51 @@ extern inline void *__va(unsigned long physaddr)
 #endif
 		return (void *)(physaddr+PAGE_OFFSET);
 }
+#else	/* !CONFIG_SUN3 */
+/* This #define is a horrible hack to suppress lots of warnings. --m */
+#define __pa(x) ___pa((unsigned long)x)
+static inline unsigned long ___pa(unsigned long x)
+{
+     if(x == 0)
+	  return 0;
+     if(x > PAGE_OFFSET)
+        return (x-PAGE_OFFSET);
+     else
+        return (x+0x2000000);
+}
+
+static inline void *__va(unsigned long x)
+{
+     if(x == 0)
+	  return (void *)0;
+
+     if(x < 0x2000000)
+        return (void *)(x+PAGE_OFFSET);
+     else
+        return (void *)(x-0x2000000);
+}
+#endif	/* CONFIG_SUN3 */
+
 #define MAP_NR(addr)		(__pa(addr) >> PAGE_SHIFT)
 
+#endif /* !__ASSEMBLY__ */
+
+#ifndef CONFIG_SUN3
+#define BUG() do { \
+	printk("kernel BUG at %s:%d!\n", __FILE__, __LINE__); \
+	asm volatile("illegal"); \
+} while (0)
+#else
+#define BUG() do { \
+	printk("kernel BUG at %s:%d!\n", __FILE__, __LINE__); \
+	panic("BUG!"); \
+} while (0)
+#endif
+
+#define PAGE_BUG(page) do { \
+	BUG(); \
+} while (0)
+
 #endif /* __KERNEL__ */
 
 #endif /* _M68K_PAGE_H */
diff --git a/include/asm-m68k/param.h b/include/asm-m68k/param.h
index 27c9834e9..af023b547 100644
--- a/include/asm-m68k/param.h
+++ b/include/asm-m68k/param.h
@@ -6,7 +6,11 @@
 #define HZ_TO_STD(a) (a)
 #endif
 
+#ifndef CONFIG_SUN3
 #define EXEC_PAGESIZE	4096
+#else
+#define EXEC_PAGESIZE	8192
+#endif
 
 #ifndef NGROUPS
 #define NGROUPS		32
diff --git a/include/asm-m68k/pgtable.h b/include/asm-m68k/pgtable.h
index e00ff1aed..c94acfc38 100644
--- a/include/asm-m68k/pgtable.h
+++ b/include/asm-m68k/pgtable.h
@@ -6,7 +6,7 @@
 
 #ifndef __ASSEMBLY__
 #include <asm/processor.h>
-#include <linux/tasks.h>
+#include <linux/threads.h>
 
 /*
  * This file contains the functions and defines necessary to modify and use
@@ -264,21 +264,6 @@ extern inline void flush_tlb_kernel_page(unsigned long addr)
 #define PTRS_PER_PGD	128
 #define USER_PTRS_PER_PGD	(TASK_SIZE/PGDIR_SIZE)
 
-/* the no. of pointers that fit on a page: this will go away */
-#define PTRS_PER_PAGE	(PAGE_SIZE/sizeof(void*))
-
-typedef pgd_t pgd_table[PTRS_PER_PGD];
-typedef pmd_t pmd_table[PTRS_PER_PMD];
-typedef pte_t pte_table[PTRS_PER_PTE];
-
-#define PGD_TABLES_PER_PAGE (PAGE_SIZE/sizeof(pgd_table))
-#define PMD_TABLES_PER_PAGE (PAGE_SIZE/sizeof(pmd_table))
-#define PTE_TABLES_PER_PAGE (PAGE_SIZE/sizeof(pte_table))
-
-typedef pgd_table pgd_tablepage[PGD_TABLES_PER_PAGE];
-typedef pmd_table pmd_tablepage[PMD_TABLES_PER_PAGE];
-typedef pte_table pte_tablepage[PTE_TABLES_PER_PAGE];
-
 /* Virtual address region for use by kernel_map() */
 #define	KMAP_START	0xd0000000
 #define	KMAP_END	0xf0000000
@@ -315,6 +300,14 @@ typedef pte_table pte_tablepage[PTE_TABLES_PER_PAGE];
 #define _PAGE_CACHE040	0x020	/* 68040 cache mode, cachable, copyback */
 #define _PAGE_CACHE040W	0x000	/* 68040 cache mode, cachable, write-through */
 
+/* Page protection values within PTE. */
+#define SUN3_PAGE_VALID     (0x80000000)
+#define SUN3_PAGE_WRITEABLE (0x40000000)
+#define SUN3_PAGE_SYSTEM    (0x20000000)
+#define SUN3_PAGE_NOCACHE   (0x10000000)
+#define SUN3_PAGE_ACCESSED  (0x02000000)
+#define SUN3_PAGE_MODIFIED  (0x01000000)
+
 #define _DESCTYPE_MASK	0x003
 
 #define _CACHEMASK040	(~0x060)
@@ -430,9 +423,9 @@ extern inline void pmd_set(pmd_t * pmdp, pte_t * ptep)
 {
 	int i;
 	unsigned long ptbl;
-	ptbl = virt_to_phys(ptep);
-	for (i = 0; i < 16; i++, ptbl += sizeof(pte_table)/16)
-		pmdp->pmd[i] = _PAGE_TABLE | _PAGE_ACCESSED | ptbl;
+	ptbl = virt_to_phys(ptep) | _PAGE_TABLE | _PAGE_ACCESSED;
+	for (i = 0; i < 16; i++, ptbl += (sizeof(pte_t)*PTRS_PER_PTE/16))
+		pmdp->pmd[i] = ptbl;
 }
 
 extern inline void pgd_set(pgd_t * pgdp, pmd_t * pmdp)
@@ -499,42 +492,6 @@ extern inline pte_t pte_mknocache(pte_t pte)
 }
 extern inline pte_t pte_mkcache(pte_t pte)	{ pte_val(pte) = (pte_val(pte) & _CACHEMASK040) | m68k_supervisor_cachemode; return pte; }
 
-/* to set the page-dir */
-extern inline void SET_PAGE_DIR(struct task_struct * tsk, pgd_t * pgdir)
-{
-	tsk->tss.crp[0] = 0x80000000 | _PAGE_TABLE;
-	tsk->tss.crp[1] = virt_to_phys(pgdir);
-	if (tsk == current) {
-		if (CPU_IS_040_OR_060)
-			__asm__ __volatile__ (".chip 68040\n\t"
-					      "pflushan\n\t"
-					      "movec %0,%%urp\n\t"
-					      ".chip 68k"
-					      : : "r" (tsk->tss.crp[1]));
-		else {
-			unsigned long tmp;
-			__asm__ __volatile__ ("movec  %%cacr,%0\n\t"
-					      "orw #0x0808,%0\n\t"
-					      "movec %0,%%cacr"
-					      : "=d" (tmp));
-			/* For a 030-only kernel, avoid flushing the whole
-			   ATC, we only need to flush the user entries.
-			   The 68851 does this by itself.  Avoid a runtime
-			   check here.  */
-			__asm__ __volatile__ (
-#ifdef CPU_M68030_ONLY
-					      ".chip 68030\n\t"
-					      "pmovefd %0,%%crp\n\t"
-					      ".chip 68k\n\t"
-					      "pflush #0,#4"
-#else
-					      "pmove %0,%%crp"
-#endif
-					      : : "m" (tsk->tss.crp[0]));
-		}
-	}
-}
-
 #define PAGE_DIR_OFFSET(tsk,address) pgd_offset((tsk),(address))
 
 /* to find an entry in a page-table-directory */
@@ -828,4 +785,6 @@ extern inline void update_mmu_cache(struct vm_area_struct * vma,
 #define PageSkip(page)		(0)
 #define kern_addr_valid(addr)	(1)
 
+#define io_remap_page_range remap_page_range
+
 #endif /* _M68K_PGTABLE_H */
diff --git a/include/asm-m68k/processor.h b/include/asm-m68k/processor.h
index b399e9703..7b6564813 100644
--- a/include/asm-m68k/processor.h
+++ b/include/asm-m68k/processor.h
@@ -15,17 +15,41 @@
 
 #include <asm/segment.h>
 #include <asm/fpu.h>
+#include <asm/ptrace.h>
+
+extern inline unsigned long rdusp(void) {
+  	unsigned long usp;
+
+	__asm__ __volatile__("move %/usp,%0" : "=a" (usp));
+	return usp;
+}
+
+extern inline void wrusp(unsigned long usp) {
+	__asm__ __volatile__("move %0,%/usp" : : "a" (usp));
+}
 
 /*
  * User space process size: 3.75GB. This is hardcoded into a few places,
  * so don't change it unless you know what you are doing.
  */
+#ifndef CONFIG_SUN3
 #define TASK_SIZE	(0xF0000000UL)
+#else
+#ifdef __ASSEMBLY__
+#define TASK_SIZE	(0x0E000000)
+#else
+#define TASK_SIZE	(0x0E000000UL)
+#endif
+#endif
 
 /* This decides where the kernel will search for a free chunk of vm
  * space during mmap's.
  */
+#ifndef CONFIG_SUN3
 #define TASK_UNMAPPED_BASE	0xC0000000UL
+#else
+#define TASK_UNMAPPED_BASE	0x0A000000UL
+#endif
 #define TASK_UNMAPPED_ALIGN(addr, off)	PAGE_ALIGN(addr)
 
 /*
@@ -53,7 +77,7 @@ struct thread_struct {
 
 #define INIT_MMAP { &init_mm, 0, 0x40000000, NULL, __pgprot(_PAGE_PRESENT|_PAGE_ACCESSED), VM_READ | VM_WRITE | VM_EXEC, 1, NULL, NULL }
 
-#define INIT_TSS  { \
+#define INIT_THREAD  { \
 	sizeof(init_stack) + (unsigned long) init_stack, 0, \
 	PS_S, __KERNEL_DS, \
 	{0, 0}, 0, {0,}, {0, 0, 0}, {0,}, \
@@ -73,6 +97,9 @@ static inline void start_thread(struct pt_regs * regs, unsigned long pc,
 	wrusp(usp);
 }
 
+/* Forward declaration, a strange C thing */
+struct task_struct;
+
 /* Free all resources held by a thread. */
 static inline void release_thread(struct task_struct *dead_task)
 {
@@ -80,7 +107,7 @@ static inline void release_thread(struct task_struct *dead_task)
 
 extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
 
-#define copy_segments(nr, tsk, mm)	do { } while (0)
+#define copy_segments(tsk, mm)		do { } while (0)
 #define release_segments(mm)		do { } while (0)
 #define forget_segments()		do { } while (0)
 
@@ -107,6 +134,8 @@ extern inline unsigned long thread_saved_pc(struct thread_struct *t)
 		return sw->retpc;
 }
 
+#define THREAD_SIZE (2*PAGE_SIZE)
+
 /* Allocation and freeing of basic task resources. */
 #define alloc_task_struct() \
 	((struct task_struct *) __get_free_pages(GFP_KERNEL,1))
@@ -115,14 +144,4 @@ extern inline unsigned long thread_saved_pc(struct thread_struct *t)
 #define init_task	(init_task_union.task)
 #define init_stack	(init_task_union.stack)
 
-/*
- * Return_address is a replacement for __builtin_return_address(count)
- * which on certain architectures cannot reasonably be implemented in GCC
- * (MIPS, Alpha) or is unuseable with -fomit-frame-pointer (i386).
- * Note that __builtin_return_address(x>=1) is forbidden because the GCC
- * aborts compilation on some CPUs.  It's simply not possible to unwind
- * some CPU's stackframes.
- */
-#define return_address() __builtin_return_address(0)
-
 #endif
diff --git a/include/asm-m68k/resource.h b/include/asm-m68k/resource.h
index 09ae4cfd2..11376a494 100644
--- a/include/asm-m68k/resource.h
+++ b/include/asm-m68k/resource.h
@@ -28,8 +28,8 @@
   {_STK_LIM, LONG_MAX}, \
   {       0, LONG_MAX}, \
   {LONG_MAX, LONG_MAX}, \
-  {MAX_TASKS_PER_USER, MAX_TASKS_PER_USER}, \
-  {NR_OPEN, NR_OPEN},   \
+  {0, 0},		\
+  {INR_OPEN, INR_OPEN}, \
   {LONG_MAX, LONG_MAX}, \
   {LONG_MAX, LONG_MAX}  \
 }
diff --git a/include/asm-m68k/sbus.h b/include/asm-m68k/sbus.h
new file mode 100644
index 000000000..160d76c6b
--- /dev/null
+++ b/include/asm-m68k/sbus.h
@@ -0,0 +1,20 @@
+/*
+ * some sbus structures and macros to make usage of sbus drivers possible
+ */
+
+#ifndef __M68K_SBUS_H
+#define __M68K_SBUS_H
+
+struct linux_sbus_device {
+	struct {
+		unsigned int which_io;
+		unsigned int phys_addr;
+	} reg_addrs[1];
+};
+
+extern void *sparc_alloc_io (u32, void *, int, char *, u32, int);
+#define sparc_alloc_io(a,b,c,d,e,f)	(a)
+
+#define ARCH_SUN4  0
+
+#endif
diff --git a/include/asm-m68k/semaphore.h b/include/asm-m68k/semaphore.h
index e1bdb10f4..cb4f38230 100644
--- a/include/asm-m68k/semaphore.h
+++ b/include/asm-m68k/semaphore.h
@@ -2,10 +2,11 @@
 #define _M68K_SEMAPHORE_H
 
 #include <linux/linkage.h>
+#include <linux/wait.h>
+#include <linux/spinlock.h>
 
 #include <asm/system.h>
 #include <asm/atomic.h>
-#include <asm/spinlock.h>
 
 /*
  * SMP- and interrupt-safe semaphores..
@@ -19,10 +20,45 @@ struct semaphore {
 	atomic_t count;
 	atomic_t waking;
 	wait_queue_head_t wait;
+#if WAITQUEUE_DEBUG
+	long __magic;
+#endif
 };
 
-#define MUTEX ((struct semaphore) { ATOMIC_INIT(1), ATOMIC_INIT(0), NULL })
-#define MUTEX_LOCKED ((struct semaphore) { ATOMIC_INIT(0), ATOMIC_INIT(0), NULL })
+#if WAITQUEUE_DEBUG
+# define __SEM_DEBUG_INIT(name) \
+		, (long)&(name).__magic
+#else
+# define __SEM_DEBUG_INIT(name)
+#endif
+
+#define __SEMAPHORE_INITIALIZER(name,count) \
+{ ATOMIC_INIT(count), ATOMIC_INIT(0), __WAIT_QUEUE_HEAD_INITIALIZER((name).wait) \
+	__SEM_DEBUG_INIT(name) }
+
+#define __MUTEX_INITIALIZER(name) \
+	__SEMAPHORE_INITIALIZER(name,1)
+
+#define __DECLARE_SEMAPHORE_GENERIC(name,count) \
+	struct semaphore name = __SEMAPHORE_INITIALIZER(name,count)
+
+#define DECLARE_MUTEX(name) __DECLARE_SEMAPHORE_GENERIC(name,1)
+#define DECLARE_MUTEX_LOCKED(name) __DECLARE_SEMAPHORE_GENERIC(name,0)
+
+extern inline void sema_init (struct semaphore *sem, int val)
+{
+	*sem = (struct semaphore)__SEMAPHORE_INITIALIZER(*sem, val);
+}
+
+static inline void init_MUTEX (struct semaphore *sem)
+{
+	sema_init(sem, 1);
+}
+
+static inline void init_MUTEX_LOCKED (struct semaphore *sem)
+{
+	sema_init(sem, 0);
+}
 
 asmlinkage void __down_failed(void /* special register calling convention */);
 asmlinkage int  __down_failed_interruptible(void  /* params in registers */);
@@ -34,8 +70,6 @@ asmlinkage int  __down_interruptible(struct semaphore * sem);
 asmlinkage int  __down_trylock(struct semaphore * sem);
 asmlinkage void __up(struct semaphore * sem);
 
-#define sema_init(sem, val)	atomic_set(&((sem)->count), val)
-
 /*
  * This is ugly, but we want the default case to fall through.
  * "down_failed" is a special asm handler that calls the C
@@ -44,6 +78,11 @@ asmlinkage void __up(struct semaphore * sem);
 extern inline void down(struct semaphore * sem)
 {
 	register struct semaphore *sem1 __asm__ ("%a1") = sem;
+
+#if WAITQUEUE_DEBUG
+	CHECK_MAGIC(sem->__magic);
+#endif
+
 	__asm__ __volatile__(
 		"| atomic down operation\n\t"
 		"subql #1,%0@\n\t"
@@ -64,6 +103,10 @@ extern inline int down_interruptible(struct semaphore * sem)
 	register struct semaphore *sem1 __asm__ ("%a1") = sem;
 	register int result __asm__ ("%d0");
 
+#if WAITQUEUE_DEBUG
+	CHECK_MAGIC(sem->__magic);
+#endif
+
 	__asm__ __volatile__(
 		"| atomic interruptible down operation\n\t"
 		"subql #1,%1@\n\t"
@@ -86,6 +129,10 @@ extern inline int down_trylock(struct semaphore * sem)
 	register struct semaphore *sem1 __asm__ ("%a1") = sem;
 	register int result __asm__ ("%d0");
 
+#if WAITQUEUE_DEBUG
+	CHECK_MAGIC(sem->__magic);
+#endif
+
 	__asm__ __volatile__(
 		"| atomic down trylock operation\n\t"
 		"subql #1,%1@\n\t"
@@ -112,6 +159,11 @@ extern inline int down_trylock(struct semaphore * sem)
 extern inline void up(struct semaphore * sem)
 {
 	register struct semaphore *sem1 __asm__ ("%a1") = sem;
+
+#if WAITQUEUE_DEBUG
+	CHECK_MAGIC(sem->__magic);
+#endif
+
 	__asm__ __volatile__(
 		"| atomic up operation\n\t"
 		"addql #1,%0@\n\t"
diff --git a/include/asm-m68k/setup.h b/include/asm-m68k/setup.h
index d857208fe..b2b11ed76 100644
--- a/include/asm-m68k/setup.h
+++ b/include/asm-m68k/setup.h
@@ -88,7 +88,9 @@ extern unsigned long m68k_machtype;
 #endif
 
 #if defined(CONFIG_SUN3)
-#  error Currently no Sun-3 support!
+#define MACH_IS_SUN3 (1)
+#define MACH_SUN3_ONLY (1)
+#define MACH_TYPE (MACH_SUN3)
 #else
 #define MACH_IS_SUN3 (0)
 #endif
@@ -243,7 +245,7 @@ extern unsigned long m68k_machtype;
 #ifndef __ASSEMBLY__
 extern unsigned long m68k_cputype;
 extern unsigned long m68k_fputype;
-extern unsigned long m68k_mmutype;			/* Not really used yet */
+extern unsigned long m68k_mmutype;		/* Not really used yet */
 
     /*
      *  m68k_is040or060 is != 0 for a '040 or higher;
@@ -255,38 +257,58 @@ extern int m68k_is040or060;
 
 #if !defined(CONFIG_M68020)
 #  define CPU_IS_020 (0)
+#  define MMU_IS_851 (0)
+#  define MMU_IS_SUN3 (0)
 #elif defined(CONFIG_M68030) || defined(CONFIG_M68040) || defined(CONFIG_M68060)
 #  define CPU_IS_020 (m68k_cputype & CPU_68020)
+#  define MMU_IS_851 (m68k_cputype & MMU_68851)
+#  define MMU_IS_SUN3 (0)	/* Sun3 not supported with other CPU enabled */
 #else
 #  define CPU_M68020_ONLY
 #  define CPU_IS_020 (1)
+#ifdef MACH_SUN3_ONLY
+#  define MMU_IS_SUN3 (1)
+#  define MMU_IS_851 (0)
+#else
+#  define MMU_IS_SUN3 (0)
+#  define MMU_IS_851 (1)
+#endif
 #endif
 
 #if !defined(CONFIG_M68030)
 #  define CPU_IS_030 (0)
+#  define MMU_IS_030 (0)
 #elif defined(CONFIG_M68020) || defined(CONFIG_M68040) || defined(CONFIG_M68060)
 #  define CPU_IS_030 (m68k_cputype & CPU_68030)
+#  define MMU_IS_030 (m68k_mmutype & MMU_68030)
 #else
 #  define CPU_M68030_ONLY
 #  define CPU_IS_030 (1)
+#  define MMU_IS_030 (1)
 #endif
 
 #if !defined(CONFIG_M68040)
 #  define CPU_IS_040 (0)
+#  define MMU_IS_040 (0)
 #elif defined(CONFIG_M68020) || defined(CONFIG_M68030) || defined(CONFIG_M68060)
 #  define CPU_IS_040 (m68k_cputype & CPU_68040)
+#  define MMU_IS_040 (m68k_mmutype & MMU_68040)
 #else
 #  define CPU_M68040_ONLY
 #  define CPU_IS_040 (1)
+#  define MMU_IS_040 (1)
 #endif
 
 #if !defined(CONFIG_M68060)
 #  define CPU_IS_060 (0)
+#  define MMU_IS_060 (0)
 #elif defined(CONFIG_M68020) || defined(CONFIG_M68030) || defined(CONFIG_M68040)
 #  define CPU_IS_060 (m68k_cputype & CPU_68060)
+#  define MMU_IS_060 (m68k_mmutype & MMU_68060)
 #else
 #  define CPU_M68060_ONLY
 #  define CPU_IS_060 (1)
+#  define MMU_IS_060 (1)
 #endif
 
 #if !defined(CONFIG_M68020) && !defined(CONFIG_M68030)
@@ -315,6 +337,16 @@ extern int m68k_is040or060;
 
 #define CPU_TYPE (m68k_cputype)
 
+#ifdef CONFIG_M68KFPU_EMU
+#  ifdef CONFIG_M68KFPU_EMU_ONLY
+#    define FPU_IS_EMU (1)
+#  else
+#    define FPU_IS_EMU (!m68k_fputype)
+#  endif
+#else
+#  define FPU_IS_EMU (0)
+#endif
+
 
     /*
      *  Miscellaneous
diff --git a/include/asm-m68k/shm.h b/include/asm-m68k/shm.h
index f59bbc39f..6e5bdf131 100644
--- a/include/asm-m68k/shm.h
+++ b/include/asm-m68k/shm.h
@@ -12,8 +12,14 @@
    bit 31 (SHM_READ_ONLY) flag whether the page belongs to a read-only attach
 */
 /* on the m68k both bits 0 and 1 must be zero */
+/* format on the sun3 is similar, but bits 30, 31 are set to zero and all
+   others are reduced by 2. --m */
 
+#ifndef CONFIG_SUN3
 #define SHM_ID_SHIFT	9
+#else
+#define SHM_ID_SHIFT	7
+#endif
 #define _SHM_ID_BITS	7
 #define SHM_ID_MASK	((1<<_SHM_ID_BITS)-1)
 
diff --git a/include/asm-m68k/shmparam.h b/include/asm-m68k/shmparam.h
index d9e6a9e05..2b8640c17 100644
--- a/include/asm-m68k/shmparam.h
+++ b/include/asm-m68k/shmparam.h
@@ -2,8 +2,13 @@
 #define _M68K_SHMPARAM_H
 
 /* address range for shared memory attaches if no address passed to shmat() */
+#ifndef CONFIG_SUN3
 #define SHM_RANGE_START	0xC0000000
 #define SHM_RANGE_END	0xD0000000
+#else
+#define SHM_RANGE_START	0x0C000000
+#define SHM_RANGE_END	0x0D000000
+#endif
 
 /*
  * Format of a swap-entry for shared memory pages currently out in
diff --git a/include/asm-m68k/smplock.h b/include/asm-m68k/smplock.h
index e62326a10..1590fafe9 100644
--- a/include/asm-m68k/smplock.h
+++ b/include/asm-m68k/smplock.h
@@ -4,7 +4,7 @@
  * Default SMP lock implementation
  */
 #include <linux/interrupt.h>
-#include <asm/spinlock.h>
+#include <linux/spinlock.h>
 
 extern spinlock_t kernel_flag;
 
diff --git a/include/asm-m68k/softirq.h b/include/asm-m68k/softirq.h
index dc5f56728..f27b11256 100644
--- a/include/asm-m68k/softirq.h
+++ b/include/asm-m68k/softirq.h
@@ -46,6 +46,9 @@ extern inline void remove_bh(int nr)
 
 extern unsigned int local_bh_count[NR_CPUS];
 
+#define local_bh_disable()	(local_bh_count[smp_processor_id()]++)
+#define local_bh_enable()	(local_bh_count[smp_processor_id()]--)
+
 extern inline void start_bh_atomic(void)
 {
 	local_bh_count[smp_processor_id()]++;
diff --git a/include/asm-m68k/spinlock.h b/include/asm-m68k/spinlock.h
index 1c3ace986..fec148175 100644
--- a/include/asm-m68k/spinlock.h
+++ b/include/asm-m68k/spinlock.h
@@ -1,66 +1,6 @@
 #ifndef __M68K_SPINLOCK_H
 #define __M68K_SPINLOCK_H
 
-/*
- * We don't do SMP on the m68k .... at least not yet.
- */
-
-/*
- * Gcc-2.7.x has a nasty bug with empty initializers.
- */
-#if (__GNUC__ > 2) || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8)
-typedef struct { } spinlock_t;
-#define SPIN_LOCK_UNLOCKED (spinlock_t) { }
-#else
-typedef struct { int gcc_is_buggy; } spinlock_t;
-#define SPIN_LOCK_UNLOCKED (spinlock_t) { 0 }
-#endif
-
-#define spin_lock_init(lock)	do { } while(0)
-#define spin_lock(lock)		do { } while(0)
-#define spin_trylock(lock)	do { } while(0)
-#define spin_unlock_wait(lock)	do { } while(0)
-#define spin_unlock(lock)	do { } while(0)
-#define spin_lock_irq(lock)	cli()
-#define spin_unlock_irq(lock)	sti()
-
-#define spin_lock_irqsave(lock, flags) \
-	do { save_flags(flags); cli(); } while (0)
-#define spin_unlock_irqrestore(lock, flags) \
-	restore_flags(flags)
-
-/*
- * Read-write spinlocks, allowing multiple readers
- * but only one writer.
- *
- * NOTE! it is quite common to have readers in interrupts
- * but no interrupt writers. For those circumstances we
- * can "mix" irq-safe locks - any writer needs to get a
- * irq-safe write-lock, but readers can get non-irqsafe
- * read-locks.
- *
- * Gcc-2.7.x has a nasty bug with empty initializers.
- */
-#if (__GNUC__ > 2) || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8)
-typedef struct { } rwlock_t;
-#define RW_LOCK_UNLOCKED (rwlock_t) { }
-#else
-typedef struct { int gcc_is_buggy; } rwlock_t;
-#define RW_LOCK_UNLOCKED (rwlock_t) { 0 }
-#endif
-
-#define read_lock(lock)		do { } while(0)
-#define read_unlock(lock)	do { } while(0)
-#define write_lock(lock)	do { } while(0)
-#define write_unlock(lock)	do { } while(0)
-#define read_lock_irq(lock)	cli()
-#define read_unlock_irq(lock)	sti()
-#define write_lock_irq(lock)	cli()
-#define write_unlock_irq(lock)	sti()
-
-#define read_lock_irqsave(lock, flags)		save_and_cli(flags)
-#define read_unlock_irqrestore(lock, flags)	restore_flags(flags)
-#define write_lock_irqsave(lock, flags)		save_and_cli(flags)
-#define write_unlock_irqrestore(lock, flags)	restore_flags(flags)
+#error "m68k doesn't do SMP"
 
 #endif
diff --git a/include/asm-m68k/sun3-head.h b/include/asm-m68k/sun3-head.h
new file mode 100644
index 000000000..d2c9f39da
--- /dev/null
+++ b/include/asm-m68k/sun3-head.h
@@ -0,0 +1,12 @@
+/* $Id: head.h,v 1.32 1996/12/04 00:12:48 ecd Exp $ */
+#ifndef __SUN3_HEAD_H
+#define __SUN3_HEAD_H
+
+#define KERNBASE        0xE000000  /* First address the kernel will eventually be */
+#define LOAD_ADDR       0x4000      /* prom jumps to us here unless this is elf /boot */
+#define BI_START (KERNBASE + 0x3000) /* beginning of the bootinfo records */
+#define FC_CONTROL  3
+#define FC_SUPERD    5
+#define FC_CPU      7
+
+#endif __SUN3_HEAD_H
diff --git a/include/asm-m68k/sun3ints.h b/include/asm-m68k/sun3ints.h
new file mode 100644
index 000000000..2ea17900d
--- /dev/null
+++ b/include/asm-m68k/sun3ints.h
@@ -0,0 +1,31 @@
+/*
+ * sun3ints.h -- Linux/Sun3 interrupt handling code definitions
+ *
+ * Erik Verbruggen (erik@bigmama.xtdnet.nl)
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive for
+ * more details.
+ */
+
+#ifndef SUN3INTS_H
+#define SUN3INTS_H
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/kernel_stat.h>
+#include <linux/interrupt.h>
+#include <asm/segment.h>
+#include <asm/intersil.h>
+#include <asm/oplib.h>
+
+void sun3_enable_irq(unsigned int irq);
+void sun3_disable_irq(unsigned int irq);
+int sun3_request_irq(unsigned int irq,
+                     void (*handler)(int, void *, struct pt_regs *),
+                     unsigned long flags, const char *devname, void *dev_id
+		    );
+
+#endif /* SUN3INTS_H */
diff --git a/include/asm-m68k/sun3mmu.h b/include/asm-m68k/sun3mmu.h
new file mode 100644
index 000000000..7277c2b77
--- /dev/null
+++ b/include/asm-m68k/sun3mmu.h
@@ -0,0 +1,167 @@
+/*
+ * Definitions for Sun3 custom MMU.
+ */
+#include <asm/movs.h>
+
+#ifndef __SUN3_MMU_H__
+#define __SUN3_MMU_H__
+
+#define FC_CONTROL 3
+
+/* MMU characteristics. */
+#define SUN3_SEGMAPS_PER_CONTEXT	2048
+#define SUN3_PMEGS_NUM			256
+#define SUN3_CONTEXTS_NUM               8
+
+#define SUN3_PMEG_SIZE_BITS	 17
+#define SUN3_PMEG_SIZE		 (1 << SUN3_PMEG_SIZE_BITS)
+#define SUN3_PMEG_MASK		 (SUN3_PMEG_SIZE - 1)
+
+#define SUN3_PTE_SIZE_BITS       13
+#define SUN3_PTE_SIZE		 (1 << SUN3_PTE_SIZE_BITS)
+#define SUN3_PTE_MASK		 (SUN3_PTE_SIZE - 1)
+
+#define SUN3_CONTROL_MASK       (0x0FFFFFFC)
+#define SUN3_INVALID_PMEG	255
+#define SUN3_INVALID_CONTEXT 255
+
+#define AC_IDPROM     0x00000000    /* 34  ID PROM, R/O, byte, 32 bytes      */
+#define AC_PAGEMAP    0x10000000    /* 3   Pagemap R/W, long                 */
+#define AC_SEGMAP     0x20000000    /* 3   Segment map, byte                 */
+#define AC_CONTEXT    0x30000000    /* 34c current mmu-context               */
+#define AC_SENABLE    0x40000000    /* 34c system dvma/cache/reset enable reg*/
+#define AC_UDVMA_ENB  0x50000000    /* 34  Not used on Sun boards, byte      */
+#define AC_BUS_ERROR  0x60000000    /* 34  Cleared on read, byte.            */
+#define AC_SYNC_ERR   0x60000000    /*   c fault type                        */
+#define AC_SYNC_VA    0x60000004    /*   c fault virtual address             */
+#define AC_ASYNC_ERR  0x60000008    /*   c asynchronous fault type           */
+#define AC_ASYNC_VA   0x6000000c    /*   c async fault virtual address       */
+#define AC_LEDS       0x70000000    /* 34  Zero turns on LEDs, byte          */
+#define AC_CACHETAGS  0x80000000    /* 34c direct access to the VAC tags     */
+#define AC_CACHEDDATA 0x90000000    /* 3 c direct access to the VAC data     */
+#define AC_UDVMA_MAP  0xD0000000    /* 4   Not used on Sun boards, byte      */
+#define AC_VME_VECTOR 0xE0000000    /* 4   For non-Autovector VME, byte      */
+#define AC_BOOT_SCC   0xF0000000    /* 34  bypass to access Zilog 8530. byte.*/
+
+#define SUN3_PAGE_CHG_MASK (SUN3_PAGE_PGNUM_MASK \
+			    | SUN3_PAGE_ACCESSED | SUN3_PAGE_MODIFIED)
+
+/* Bus access type within PTE. */
+#define SUN3_PAGE_TYPE_MASK   (0x0c000000)
+#define SUN3_PAGE_TYPE_MEMORY (0x00000000)
+#define SUN3_PAGE_TYPE_IO     (0x04000000)
+#define SUN3_PAGE_TYPE_VME16  (0x08000000)
+#define SUN3_PAGE_TYPE_VME32  (0x0c000000)
+
+/* Mask for page number within PTE. */
+#define SUN3_PAGE_PGNUM_MASK (0x0007FFFF)
+
+/* Bits within bus-error register. */
+#define SUN3_BUSERR_WATCHDOG	(0x01)
+#define SUN3_BUSERR_unused	(0x02)
+#define SUN3_BUSERR_FPAENERR	(0x04)
+#define SUN3_BUSERR_FPABERR	(0x08)
+#define SUN3_BUSERR_VMEBERR	(0x10)
+#define SUN3_BUSERR_TIMEOUT	(0x20)
+#define SUN3_BUSERR_PROTERR	(0x40)
+#define SUN3_BUSERR_INVALID	(0x80)
+
+#ifndef __ASSEMBLY__
+
+/* Read bus error status register (implicitly clearing it). */
+extern __inline__ unsigned char sun3_get_buserr (void)
+{
+	unsigned char sfc, c;
+
+	GET_SFC (sfc);
+	SET_SFC (FC_CONTROL);
+	GET_CONTROL_BYTE (AC_BUS_ERROR, c);
+	SET_SFC (sfc);
+
+	return c;
+}
+
+/* Read segmap from hardware MMU. */
+extern __inline__ unsigned long sun3_get_segmap (unsigned long addr)
+{
+        register unsigned long entry;
+        unsigned char c, sfc;
+
+        GET_SFC (sfc);
+        SET_SFC (FC_CONTROL);
+        GET_CONTROL_BYTE (AC_SEGMAP | (addr & SUN3_CONTROL_MASK), c);
+        SET_SFC (sfc);
+        entry = c;
+
+        return entry;
+}
+
+/* Write segmap to hardware MMU. */
+extern __inline__ void sun3_put_segmap (unsigned long addr, unsigned long entry)
+{
+        unsigned char sfc;
+
+        GET_DFC (sfc);
+        SET_DFC (FC_CONTROL);
+        SET_CONTROL_BYTE (AC_SEGMAP | (addr & SUN3_CONTROL_MASK), entry);
+	SET_DFC (sfc);
+
+        return;
+}
+
+/* Read PTE from hardware MMU. */
+extern __inline__ unsigned long sun3_get_pte (unsigned long addr)
+{
+        register unsigned long entry;
+        unsigned char sfc;
+
+        GET_SFC (sfc);
+        SET_SFC (FC_CONTROL);
+        GET_CONTROL_WORD (AC_PAGEMAP | (addr & SUN3_CONTROL_MASK), entry);
+        SET_SFC (sfc);
+
+        return entry;
+}
+
+/* Write PTE to hardware MMU. */
+extern __inline__ void sun3_put_pte (unsigned long addr, unsigned long entry)
+{
+        unsigned char sfc;
+
+        GET_DFC (sfc);
+        SET_DFC (FC_CONTROL);
+        SET_CONTROL_WORD (AC_PAGEMAP | (addr & SUN3_CONTROL_MASK), entry);
+	SET_DFC (sfc);
+
+        return;
+}
+
+/* get current context */
+extern __inline__ unsigned char sun3_get_context(void)
+{
+	unsigned char sfc, c;
+
+	GET_SFC(sfc);
+	SET_SFC(FC_CONTROL);
+	GET_CONTROL_BYTE(AC_CONTEXT, c);
+	SET_SFC(sfc);
+	
+	return c;
+}
+
+/* set alternate context */
+extern __inline__ void sun3_put_context(unsigned char c)
+{
+	unsigned char dfc;
+	GET_DFC(dfc);
+	SET_DFC(FC_CONTROL);
+	SET_CONTROL_BYTE(AC_CONTEXT, c);
+	SET_DFC(dfc);
+	
+	return;
+}
+
+
+#endif	/* !__ASSEMBLY__ */
+
+#endif	/* !__SUN3_MMU_H__ */
diff --git a/include/asm-m68k/swim_iop.h b/include/asm-m68k/swim_iop.h
new file mode 100644
index 000000000..12df2635f
--- /dev/null
+++ b/include/asm-m68k/swim_iop.h
@@ -0,0 +1,221 @@
+/*
+ * SWIM access through the IOP
+ * Written by Joshua M. Thompson
+ */
+
+/* IOP number and channel number for the SWIM */
+
+#define SWIM_IOP	IOP_NUM_ISM
+#define SWIM_CHAN	1
+
+/* Command code: */
+
+#define CMD_INIT		0x01	/* Initialize                  */
+#define CMD_SHUTDOWN		0x02	/* Shutdown                    */
+#define CMD_START_POLL		0x03	/* Start insert/eject polling  */
+#define CMD_STOP_POLL		0x04	/* Stop insert/eject polling   */
+#define CMD_SETHFSTAG		0x05	/* Set HFS tag buffer address  */
+#define CMD_STATUS		0x06	/* Status                      */
+#define CMD_EJECT		0x07	/* Eject                       */
+#define CMD_FORMAT		0x08	/* Format                      */
+#define CMD_FORMAT_VERIFY	0x09	/* Format and Verify           */
+#define CMD_WRITE		0x0A	/* Write                       */
+#define CMD_READ		0x0B	/* Read                        */
+#define CMD_READ_VERIFY		0x0C	/* Read and Verify             */
+#define CMD_CACHE_CTRL		0x0D	/* Cache control               */
+#define CMD_TAGBUFF_CTRL	0x0E	/* Tag buffer control          */
+#define CMD_GET_ICON		0x0F	/* Get Icon                    */
+
+/* Drive types: */
+
+/* note: apple sez DRV_FDHD is 4, but I get back a type */
+/*       of 5 when I do a drive status check on my FDHD */
+
+#define	DRV_NONE	0	/* No drive             */
+#define	DRV_UNKNOWN	1	/* Unspecified drive    */
+#define	DRV_400K	2	/* 400K                 */
+#define	DRV_800K	3	/* 400K/800K            */
+#define	DRV_FDHD	5	/* 400K/800K/720K/1440K */
+#define	DRV_HD20	7	/* Apple HD20           */
+
+/* Format types: */
+
+#define	FMT_HD20	0x0001	/*  Apple HD20 */
+#define	FMT_400K	0x0002	/*  400K (GCR) */
+#define	FMT_800K	0x0004	/*  800K (GCR) */
+#define	FMT_720K	0x0008	/*  720K (MFM) */
+#define	FMT_1440K	0x0010	/* 1.44M (MFM) */
+
+#define	FMD_KIND_400K	1
+#define	FMD_KIND_800K	2
+#define	FMD_KIND_720K	3
+#define	FMD_KIND_1440K	1
+
+/* Icon Flags: */
+
+#define	ICON_MEDIA	0x01	/* Have IOP supply media icon */
+#define	ICON_DRIVE	0x01	/* Have IOP supply drive icon */
+
+/* Error codes: */
+
+#define	gcrOnMFMErr	-400	/* GCR (400/800K) on HD media */
+#define	verErr		-84	/* verify failed */
+#define	fmt2Err		-83	/* cant get enough sync during format */
+#define	fmt1Err		-82	/* can't find sector 0 after track format */
+#define	sectNFErr	-81	/* can't find sector */
+#define	seekErr		-80	/* drive error during seek */
+#define	spdAdjErr	-79	/* can't set drive speed */
+#define	twoSideErr	-78	/* drive is single-sided */
+#define	initIWMErr	-77	/* error during initialization */
+#define	tk0badErr	-76	/* track zero is bad */
+#define	cantStepErr	-75	/* drive error during step */
+#define	wrUnderrun	-74	/* write underrun occurred */
+#define	badDBtSlp	-73	/* bad data bitslip marks */
+#define	badDCksum	-72	/* bad data checksum */
+#define	noDtaMkErr	-71	/* can't find data mark */
+#define	badBtSlpErr	-70	/* bad address bitslip marks */
+#define	badCksmErr	-69	/* bad address-mark checksum */
+#define	dataVerErr	-68	/* read-verify failed */
+#define	noAdrMkErr	-67	/* can't find an address mark */
+#define	noNybErr	-66	/* no nybbles? disk is probably degaussed */
+#define	offLinErr	-65	/* no disk in drive */
+#define	noDriveErr	-64	/* drive isn't connected */
+#define	nsDrvErr	-56	/* no such drive */
+#define	paramErr	-50	/* bad positioning information */
+#define	wPrErr		-44	/* write protected */
+#define	openErr		-23	/* already initialized */
+
+#ifndef __ASSEMBLY__
+
+struct swim_drvstatus {
+	__u16	curr_track;	/* Current track number                   */
+	__u8	write_prot;	/* 0x80 if disk is write protected        */
+	__u8	disk_in_drive;	/* 0x01 or 0x02 if a disk is in the drive */
+	__u8	installed;	/* 0x01 if drive installed, 0xFF if not   */
+	__u8	num_sides;	/* 0x80 if two-sided format supported     */
+	__u8	two_sided;	/* 0xff if two-sided format diskette      */
+	__u8	new_interface;	/* 0x00 if old 400K drive, 0xFF if newer  */
+	__u16	errors;		/* Disk error count                       */
+	struct {		/* 32 bits */
+		__u16	reserved;
+		__u16	:4;
+		__u16	external:1;	/* Drive is external        */
+		__u16	scsi:1;		/* Drive is a SCSI drive    */
+		__u16	fixed:1;	/* Drive has fixed media    */
+		__u16	secondary:1;	/* Drive is secondary drive */
+		__u8	type;		/* Drive type               */
+	} info;
+	__u8	mfm_drive;	/* 0xFF if this is an FDHD drive    */
+	__u8	mfm_disk;	/* 0xFF if 720K/1440K (MFM) disk    */
+	__u8	mfm_format;	/* 0x00 if 720K, 0xFF if 1440K      */
+	__u8	ctlr_type;	/* 0x00 if IWM, 0xFF if SWIM        */
+	__u16	curr_format;	/* Current format type              */
+	__u16	allowed_fmt;	/* Allowed format types             */
+	__u32	num_blocks;	/* Number of blocks on disk         */
+	__u8	icon_flags;	/* Icon flags                       */
+	__u8	unusued;
+};
+
+/* Commands issued from the host to the IOP: */
+
+struct swimcmd_init {
+	__u8	code;		/* CMD_INIT */
+	__u8	unusued;
+	__u16	error;
+	__u8	drives[28];	/* drive type list */
+};
+
+struct swimcmd_startpoll {
+	__u8	code;		/* CMD_START_POLL */
+	__u8	unusued;
+	__u16	error;
+};
+
+struct swimcmd_sethfstag {
+	__u8	code;		/* CMD_SETHFSTAG */
+	__u8	unusued;
+	__u16	error;
+	caddr_t	tagbuf;		/* HFS tag buffer address */
+};
+
+struct swimcmd_status {
+	__u8	code;		/* CMD_STATUS */
+	__u8	drive_num;
+	__u16	error;
+	struct swim_drvstatus status;
+};
+
+struct swimcmd_eject {
+	__u8	code;		/* CMD_EJECT */
+	__u8	drive_num;
+	__u16	error;
+	struct swim_drvstatus status;
+};
+
+struct swimcmd_format {
+	__u8	code;		/* CMD_FORMAT */
+	__u8	drive_num;
+	__u16	error;
+	union {
+		struct {
+			__u16 fmt;	   /* format kind                  */
+			__u8  hdrbyte;	   /* fmt byte for hdr (0=default) */
+			__u8  interleave;  /* interleave (0 = default)     */
+			caddr_t	databuf;   /* sector data buff (0=default  */
+			caddr_t	tagbuf;	   /* tag data buffer (0=default)  */
+		} f;
+		struct swim_drvstatus status;
+	} p;
+};
+
+struct swimcmd_fmtverify {
+	__u8	code;		/* CMD_FORMAT_VERIFY */
+	__u8	drive_num;
+	__u16	error;
+};
+
+struct swimcmd_rw {
+	__u8	code;		/* CMD_READ, CMD_WRITE or CMD_READ_VERIFY */
+	__u8	drive_num;
+	__u16	error;
+	caddr_t	buffer;		/* R/W buffer address */
+	__u32	first_block;	/* Starting block     */
+	__u32	num_blocks;	/* Number of blocks   */
+	__u8	tag[12];	/* tag data           */
+};
+
+struct swimcmd_cachectl {
+	__u8	code;		/* CMD_CACHE_CTRL */
+	__u8	unused;
+	__u16	error;
+	__u8	enable;		/* Nonzero to enable cache                */
+	__u8	install;	/* +1 = install, -1 = remove, 0 = neither */
+};
+
+struct swimcmd_tagbufctl {
+	__u8	code;		/* CMD_TAGBUFF_CTRL */
+	__u8	unused;
+	__u16	error;
+	caddr_t	buf;		/* buffer address or 0 to disable */
+};
+
+struct swimcmd_geticon {
+	__u8	code;		/* CMD_GET_ICON */
+	__u8	drive_num;
+	__u16	error;
+	caddr_t	buffer;		/* Nuffer address */
+	__u16	kind;		/* 0 = media icon, 1 = drive icon */
+	__u16	unused;
+	__u16	max_bytes;	/* maximum  byte count */
+};
+
+/* Messages from the SWIM IOP to the host CPU: */
+
+struct swimmsg_status {
+	__u8	code;		/* 1 = insert, 2 = eject, 3 = status changed */
+	__u8	drive_num;
+	__u16	error;
+	struct swim_drvstatus status;
+};
+
+#endif /* __ASSEMBLY__ */
diff --git a/include/asm-m68k/system.h b/include/asm-m68k/system.h
index 03353e44c..7d1afa286 100644
--- a/include/asm-m68k/system.h
+++ b/include/asm-m68k/system.h
@@ -5,16 +5,7 @@
 #include <linux/linkage.h>
 #include <asm/segment.h>
 
-extern inline unsigned long rdusp(void) {
-  	unsigned long usp;
-
-	__asm__ __volatile__("move %/usp,%0" : "=a" (usp));
-	return usp;
-}
-
-extern inline void wrusp(unsigned long usp) {
-	__asm__ __volatile__("move %0,%/usp" : : "a" (usp));
-}
+#define prepare_to_switch()	do { } while(0)
 
 /*
  * switch_to(n) should switch tasks to task ptr, first checking that
diff --git a/include/asm-m68k/unistd.h b/include/asm-m68k/unistd.h
index 4180f3df7..2f6d5c3f4 100644
--- a/include/asm-m68k/unistd.h
+++ b/include/asm-m68k/unistd.h
@@ -116,7 +116,7 @@
 #define __NR_olduname		109
 #define __NR_iopl		/* 110 */ not supported
 #define __NR_vhangup		111
-#define __NR_idle		112
+#define __NR_idle		/* 112 */ Obsolete
 #define __NR_vm86		/* 113 */ not supported
 #define __NR_wait4		114
 #define __NR_swapoff		115
@@ -309,7 +309,6 @@ __syscall_return(type,__res); \
  * some others too.
  */
 #define __NR__exit __NR_exit
-static inline _syscall0(int,idle)
 static inline _syscall0(int,pause)
 static inline _syscall0(int,sync)
 static inline _syscall0(pid_t,setsid)
diff --git a/include/asm-m68k/virtconvert.h b/include/asm-m68k/virtconvert.h
index 8162a4979..302308d88 100644
--- a/include/asm-m68k/virtconvert.h
+++ b/include/asm-m68k/virtconvert.h
@@ -17,9 +17,21 @@
 /*
  * Change virtual addresses to physical addresses and vv.
  */
+#ifndef CONFIG_SUN3
 extern unsigned long mm_vtop(unsigned long addr) __attribute__ ((const));
 extern unsigned long mm_vtop_fallback (unsigned long) __attribute__ ((const));
 extern unsigned long mm_ptov(unsigned long addr) __attribute__ ((const));
+#else
+extern inline unsigned long mm_vtop(unsigned long vaddr)
+{
+	return __pa(vaddr);
+}
+
+extern inline unsigned long mm_ptov(unsigned long paddr)
+{
+	return (unsigned long)__va(paddr);
+}
+#endif 
 
 #ifdef CONFIG_SINGLE_MEMORY_CHUNK
 extern inline unsigned long virt_to_phys(volatile void * address)
author	Ralf Baechle <ralf@linux-mips.org>	1999-10-09 00:00:47 +0000
committer	Ralf Baechle <ralf@linux-mips.org>	1999-10-09 00:00:47 +0000
commit	d6434e1042f3b0a6dfe1b1f615af369486f9b1fa (patch)
tree	e2be02f33984c48ec019c654051d27964e42c441 /include/asm-m68k
parent	609d1e803baf519487233b765eb487f9ec227a18 (diff)