Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k: (24 commits)
  m68k: Define sigcontext ABI of ColdFire
  m68knommu: NPTL support for uClinux
  m68k: Add NPTL support
  m68k: Eliminate unused variable in page_to_phys()
  m68k: Switch to generic siginfo layout
  macfb: fix 24-bit visual and stuff
  macfb: cleanup
  fbdev: add some missing mac modes
  mac68k: start CUDA early
  valkyriefb: various fixes
  fbdev: mac_var_to_mode() fix
  mac68k: move macsonic and macmace platform devices
  mac68k: move mac_esp platform device
  mac68k: replace mac68k SCC code with platform device
  pmac-zilog: add platform driver
  pmac-zilog: cleanup
  mac68k: rework SWIM platform device
  mac68k: cleanup
  ataflop: Killl warning about unused variable flags
  m68k: Use DIV_ROUND_CLOSEST
  ...

33 files changed, 432 insertions, 755 deletions

diff --git a/arch/h8300/mm/memory.c b/arch/h8300/mm/memory.c
index ccd6ade816d..40d8aa811e4 100644
--- a/arch/h8300/mm/memory.c
+++ b/arch/h8300/mm/memory.c
@@ -44,8 +44,8 @@ void cache_push_v (unsigned long vaddr, int len)
 {
 }
 
-/* Map some physical address range into the kernel address space. The
- * code is copied and adapted from map_chunk().
+/*
+ * Map some physical address range into the kernel address space.
  */
 
 unsigned long kernel_map(unsigned long paddr, unsigned long size,
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
index ecdc19a299b..b5da298ba61 100644
--- a/arch/m68k/Kconfig
+++ b/arch/m68k/Kconfig
@@ -536,10 +536,6 @@ config GVPIOEXT_PLIP
 	  Say Y to enable doing IP over the parallel port on your GVP
 	  IO-Extender card, N otherwise.
 
-config MAC_SCC
-	tristate "Macintosh serial support"
-	depends on MAC
-
 config MAC_HID
 	bool
 	depends on INPUT_ADBHID
@@ -595,7 +591,7 @@ config DN_SERIAL
 
 config SERIAL_CONSOLE
 	bool "Support for serial port console"
-	depends on (AMIGA || ATARI || MAC || SUN3 || SUN3X || VME || APOLLO) && (ATARI_MFPSER=y || ATARI_MIDI=y || MAC_SCC=y || AMIGA_BUILTIN_SERIAL=y || GVPIOEXT=y || MULTIFACE_III_TTY=y || SERIAL=y || MVME147_SCC || SERIAL167 || MVME162_SCC || BVME6000_SCC || DN_SERIAL)
+	depends on (AMIGA || ATARI || SUN3 || SUN3X || VME || APOLLO) && (ATARI_MFPSER=y || ATARI_MIDI=y || AMIGA_BUILTIN_SERIAL=y || GVPIOEXT=y || MULTIFACE_III_TTY=y || SERIAL=y || MVME147_SCC || SERIAL167 || MVME162_SCC || BVME6000_SCC || DN_SERIAL)
 	---help---
 	  If you say Y here, it will be possible to use a serial port as the
 	  system console (the system console is the device which receives all
diff --git a/arch/m68k/amiga/config.c b/arch/m68k/amiga/config.c
index 6c74751c7b8..d2cc35d9853 100644
--- a/arch/m68k/amiga/config.c
+++ b/arch/m68k/amiga/config.c
@@ -480,7 +480,7 @@ static void __init amiga_sched_init(irq_handler_t timer_routine)
 	static struct resource sched_res = {
 		.name = "timer", .start = 0x00bfd400, .end = 0x00bfd5ff,
 	};
-	jiffy_ticks = (amiga_eclock+HZ/2)/HZ;
+	jiffy_ticks = DIV_ROUND_CLOSEST(amiga_eclock, HZ);
 
 	if (request_resource(&mb_resources._ciab, &sched_res))
 		printk("Cannot allocate ciab.ta{lo,hi}\n");
diff --git a/arch/m68k/configs/mac_defconfig b/arch/m68k/configs/mac_defconfig
index 9991b64fea5..c5f3232ff91 100644
--- a/arch/m68k/configs/mac_defconfig
+++ b/arch/m68k/configs/mac_defconfig
@@ -701,6 +701,11 @@ CONFIG_VT_HW_CONSOLE_BINDING=y
 #
 # Non-8250 serial port support
 #
+CONFIG_SERIAL_CORE=y
+CONFIG_SERIAL_CORE_CONSOLE=y
+CONFIG_SERIAL_PMACZILOG=y
+CONFIG_SERIAL_PMACZILOG_TTYS=y
+CONFIG_SERIAL_PMACZILOG_CONSOLE=y
 CONFIG_UNIX98_PTYS=y
 # CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
 CONFIG_LEGACY_PTYS=y
@@ -834,9 +839,7 @@ CONFIG_HIDRAW=y
 #
 # Character devices
 #
-CONFIG_MAC_SCC=y
 CONFIG_MAC_HID=y
-CONFIG_SERIAL_CONSOLE=y
 
 #
 # File systems
diff --git a/arch/m68k/configs/multi_defconfig b/arch/m68k/configs/multi_defconfig
index 69c43e2d8b4..a8bfa3fa71c 100644
--- a/arch/m68k/configs/multi_defconfig
+++ b/arch/m68k/configs/multi_defconfig
@@ -822,6 +822,11 @@ CONFIG_A2232=y
 #
 # Non-8250 serial port support
 #
+CONFIG_SERIAL_CORE=y
+CONFIG_SERIAL_CORE_CONSOLE=y
+CONFIG_SERIAL_PMACZILOG=y
+CONFIG_SERIAL_PMACZILOG_TTYS=y
+CONFIG_SERIAL_PMACZILOG_CONSOLE=y
 CONFIG_UNIX98_PTYS=y
 # CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
 CONFIG_LEGACY_PTYS=y
@@ -982,7 +987,6 @@ CONFIG_ATARI_MIDI=y
 CONFIG_ATARI_DSP56K=m
 CONFIG_AMIGA_BUILTIN_SERIAL=y
 CONFIG_MULTIFACE_III_TTY=m
-CONFIG_MAC_SCC=y
 CONFIG_MAC_HID=y
 CONFIG_MVME147_SCC=y
 CONFIG_SERIAL167=y
diff --git a/arch/m68k/include/asm/machw.h b/arch/m68k/include/asm/machw.h
index 2b4de0c2ce4..a2209516492 100644
--- a/arch/m68k/include/asm/machw.h
+++ b/arch/m68k/include/asm/machw.h
@@ -21,29 +21,4 @@
 #define VIDEOMEMSIZE	(4096*1024)
 #define VIDEOMEMMASK	(-4096*1024)
 
-#ifndef __ASSEMBLY__
-
-#include <linux/types.h>
-
-#if 0
-/*
-** SCC Z8530
-*/
-
-#define MAC_SCC_BAS (0x50F04000)
-struct MAC_SCC
- {
-  u_char cha_a_ctrl;
-  u_char char_dummy1;
-  u_char cha_a_data;
-  u_char char_dummy2;
-  u_char cha_b_ctrl;
-  u_char char_dummy3;
-  u_char cha_b_data;
- };
-# define mac_scc ((*(volatile struct SCC*)MAC_SCC_BAS))
-#endif
-
-#endif /* __ASSEMBLY__ */
-
 #endif /* linux/machw.h */
diff --git a/arch/m68k/include/asm/macints.h b/arch/m68k/include/asm/macints.h
index 679c48ab440..ebe1b70fe90 100644
--- a/arch/m68k/include/asm/macints.h
+++ b/arch/m68k/include/asm/macints.h
@@ -37,7 +37,6 @@
 
 #define VIA1_SOURCE_BASE	8
 #define VIA2_SOURCE_BASE	16
-#define MAC_SCC_SOURCE_BASE	24
 #define PSC3_SOURCE_BASE	24
 #define PSC4_SOURCE_BASE	32
 #define PSC5_SOURCE_BASE	40
@@ -96,26 +95,12 @@
 #define IRQ_PSC3_2	  (26)
 #define IRQ_PSC3_3	  (27)
 
-/* Level 4 (SCC) interrupts */
-#define IRQ_SCC		     (32)
-#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)
-#define IRQ_SCCB_STAT	     (33)
-#define IRQ_SCCB_RX	     (34)
-#define IRQ_SCCB_SPCOND	     (35)
-#define IRQ_SCCA_TX	     (36)
-#define IRQ_SCCA_STAT	     (37)
-#define IRQ_SCCA_RX	     (38)
-#define IRQ_SCCA_SPCOND	     (39)
-#endif
-
 /* Level 4 (PSC, AV Macs only) interrupts */
 #define IRQ_PSC4_0	  (32)
 #define IRQ_PSC4_1	  (33)
+#define IRQ_MAC_SCC_A	  IRQ_PSC4_1
 #define IRQ_PSC4_2	  (34)
+#define IRQ_MAC_SCC_B	  IRQ_PSC4_2
 #define IRQ_PSC4_3	  (35)
 #define IRQ_MAC_MACE_DMA  IRQ_PSC4_3
 
@@ -146,6 +131,9 @@
 #define IRQ_BABOON_2	  (66)
 #define IRQ_BABOON_3	  (67)
 
+/* On non-PSC machines, the serial ports share an IRQ */
+#define IRQ_MAC_SCC	  IRQ_AUTO_4
+
 #define SLOT2IRQ(x)	  (x + 47)
 #define IRQ2SLOT(x)	  (x - 47)
 
diff --git a/arch/m68k/include/asm/ptrace.h b/arch/m68k/include/asm/ptrace.h
index ee4011c2328..21605c736f6 100644
--- a/arch/m68k/include/asm/ptrace.h
+++ b/arch/m68k/include/asm/ptrace.h
@@ -71,6 +71,8 @@ struct switch_stack {
 #define PTRACE_GETFPREGS          14
 #define PTRACE_SETFPREGS          15
 
+#define PTRACE_GET_THREAD_AREA    25
+
 #define PTRACE_SINGLEBLOCK	33	/* resume execution until next branch */
 
 #ifdef __KERNEL__
diff --git a/arch/m68k/include/asm/sigcontext.h b/arch/m68k/include/asm/sigcontext.h
index 523db2a51cf..1320eaa4cc2 100644
--- a/arch/m68k/include/asm/sigcontext.h
+++ b/arch/m68k/include/asm/sigcontext.h
@@ -15,9 +15,15 @@ struct sigcontext {
 	unsigned long  sc_pc;
 	unsigned short sc_formatvec;
 #ifndef __uClinux__
+# ifdef __mcoldfire__
+	unsigned long  sc_fpregs[2][2];	/* room for two fp registers */
+	unsigned long  sc_fpcntl[3];
+	unsigned char  sc_fpstate[16+6*8];
+# else
 	unsigned long  sc_fpregs[2*3];  /* room for two fp registers */
 	unsigned long  sc_fpcntl[3];
 	unsigned char  sc_fpstate[216];
+# endif
 #endif
 };
 
diff --git a/arch/m68k/include/asm/siginfo.h b/arch/m68k/include/asm/siginfo.h
index ca7dde8fd22..851d3d784b5 100644
--- a/arch/m68k/include/asm/siginfo.h
+++ b/arch/m68k/include/asm/siginfo.h
@@ -1,97 +1,6 @@
 #ifndef _M68K_SIGINFO_H
 #define _M68K_SIGINFO_H
 
-#ifndef __uClinux__
-#define HAVE_ARCH_SIGINFO_T
-#define HAVE_ARCH_COPY_SIGINFO
-#endif
-
 #include <asm-generic/siginfo.h>
 
-#ifndef __uClinux__
-
-typedef struct siginfo {
-	int si_signo;
-	int si_errno;
-	int si_code;
-
-	union {
-		int _pad[SI_PAD_SIZE];
-
-		/* kill() */
-		struct {
-			__kernel_pid_t _pid;	/* sender's pid */
-			__kernel_uid_t _uid;	/* backwards compatibility */
-			__kernel_uid32_t _uid32; /* sender's uid */
-		} _kill;
-
-		/* POSIX.1b timers */
-		struct {
-			timer_t _tid;		/* timer id */
-			int _overrun;		/* overrun count */
-			char _pad[sizeof( __ARCH_SI_UID_T) - sizeof(int)];
-			sigval_t _sigval;	/* same as below */
-			int _sys_private;       /* not to be passed to user */
-		} _timer;
-
-		/* POSIX.1b signals */
-		struct {
-			__kernel_pid_t _pid;	/* sender's pid */
-			__kernel_uid_t _uid;	/* backwards compatibility */
-			sigval_t _sigval;
-			__kernel_uid32_t _uid32; /* sender's uid */
-		} _rt;
-
-		/* SIGCHLD */
-		struct {
-			__kernel_pid_t _pid;	/* which child */
-			__kernel_uid_t _uid;	/* backwards compatibility */
-			int _status;		/* exit code */
-			clock_t _utime;
-			clock_t _stime;
-			__kernel_uid32_t _uid32; /* sender's uid */
-		} _sigchld;
-
-		/* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
-		struct {
-			void *_addr; /* faulting insn/memory ref. */
-		} _sigfault;
-
-		/* SIGPOLL */
-		struct {
-			int _band;	/* POLL_IN, POLL_OUT, POLL_MSG */
-			int _fd;
-		} _sigpoll;
-	} _sifields;
-} siginfo_t;
-
-#define UID16_SIGINFO_COMPAT_NEEDED
-
-/*
- * How these fields are to be accessed.
- */
-#undef si_uid
-#ifdef __KERNEL__
-#define si_uid		_sifields._kill._uid32
-#define si_uid16	_sifields._kill._uid
-#else
-#define si_uid		_sifields._kill._uid
-#endif
-
-#ifdef __KERNEL__
-
-#include <linux/string.h>
-
-static inline void copy_siginfo(struct siginfo *to, struct siginfo *from)
-{
-	if (from->si_code < 0)
-		memcpy(to, from, sizeof(*to));
-	else
-		/* _sigchld is currently the largest know union member */
-		memcpy(to, from, 3*sizeof(int) + sizeof(from->_sifields._sigchld));
-}
-
-#endif /* __KERNEL__ */
-#endif /* !__uClinux__ */
-
 #endif
diff --git a/arch/m68k/include/asm/swab.h b/arch/m68k/include/asm/swab.h
index 5b754aace74..b7b37a40def 100644
--- a/arch/m68k/include/asm/swab.h
+++ b/arch/m68k/include/asm/swab.h
@@ -14,7 +14,7 @@ static inline __attribute_const__ __u32 __arch_swab32(__u32 val)
 }
 
 #define __arch_swab32 __arch_swab32
-#elif !defined(__uClinux__)
+#elif !defined(__mcoldfire__)
 
 static inline __attribute_const__ __u32 __arch_swab32(__u32 val)
 {
diff --git a/arch/m68k/include/asm/thread_info_mm.h b/arch/m68k/include/asm/thread_info_mm.h
index 167e518db41..67266c68345 100644
--- a/arch/m68k/include/asm/thread_info_mm.h
+++ b/arch/m68k/include/asm/thread_info_mm.h
@@ -16,6 +16,7 @@ struct thread_info {
 	struct exec_domain	*exec_domain;	/* execution domain */
 	int			preempt_count;	/* 0 => preemptable, <0 => BUG */
 	__u32 cpu; /* should always be 0 on m68k */
+	unsigned long		tp_value;	/* thread pointer */
 	struct restart_block    restart_block;
 };
 #endif /* __ASSEMBLY__ */
diff --git a/arch/m68k/include/asm/thread_info_no.h b/arch/m68k/include/asm/thread_info_no.h
index a6512bfdd01..884776f686c 100644
--- a/arch/m68k/include/asm/thread_info_no.h
+++ b/arch/m68k/include/asm/thread_info_no.h
@@ -37,6 +37,7 @@ struct thread_info {
 	unsigned long	   flags;		/* low level flags */
 	int		   cpu;			/* cpu we're on */
 	int		   preempt_count;	/* 0 => preemptable, <0 => BUG */
+	unsigned long	   tp_value;		/* thread pointer */
 	struct restart_block restart_block;
 };
 
diff --git a/arch/m68k/include/asm/ucontext.h b/arch/m68k/include/asm/ucontext.h
index e4e22669edc..00dcc5176c5 100644
--- a/arch/m68k/include/asm/ucontext.h
+++ b/arch/m68k/include/asm/ucontext.h
@@ -7,7 +7,11 @@ typedef greg_t gregset_t[NGREG];
 
 typedef struct fpregset {
 	int f_fpcntl[3];
+#ifdef __mcoldfire__
+	int f_fpregs[8][2];
+#else
 	int f_fpregs[8*3];
+#endif
 } fpregset_t;
 
 struct mcontext {
diff --git a/arch/m68k/include/asm/unistd.h b/arch/m68k/include/asm/unistd.h
index 48b87f5ced5..d72a71dabec 100644
--- a/arch/m68k/include/asm/unistd.h
+++ b/arch/m68k/include/asm/unistd.h
@@ -336,10 +336,14 @@
 #define __NR_pwritev		330
 #define __NR_rt_tgsigqueueinfo	331
 #define __NR_perf_event_open	332
+#define __NR_get_thread_area	333
+#define __NR_set_thread_area	334
+#define __NR_atomic_cmpxchg_32	335
+#define __NR_atomic_barrier	336
 
 #ifdef __KERNEL__
 
-#define NR_syscalls		333
+#define NR_syscalls		337
 
 #define __ARCH_WANT_IPC_PARSE_VERSION
 #define __ARCH_WANT_OLD_READDIR
diff --git a/arch/m68k/include/asm/virtconvert.h b/arch/m68k/include/asm/virtconvert.h
index 3f834b3ab5b..f35229b8651 100644
--- a/arch/m68k/include/asm/virtconvert.h
+++ b/arch/m68k/include/asm/virtconvert.h
@@ -31,12 +31,7 @@ static inline void *phys_to_virt(unsigned long address)
 #define page_to_phys(page) \
 	__pa(PAGE_OFFSET + (((page) - pg_data_map[0].node_mem_map) << PAGE_SHIFT))
 #else
-#define page_to_phys(_page) ({						\
-	struct page *__page = _page;					\
-	struct pglist_data *pgdat;					\
-	pgdat = pg_data_table[page_to_nid(__page)];			\
-	page_to_pfn(__page) << PAGE_SHIFT;				\
-})
+#define page_to_phys(page)	(page_to_pfn(page) << PAGE_SHIFT)
 #endif
 #else
 #define page_to_phys(page)	(((page) - mem_map) << PAGE_SHIFT)
diff --git a/arch/m68k/kernel/entry.S b/arch/m68k/kernel/entry.S
index 77fc7c16bf4..e136b8cbe9b 100644
--- a/arch/m68k/kernel/entry.S
+++ b/arch/m68k/kernel/entry.S
@@ -761,4 +761,8 @@ sys_call_table:
 	.long sys_pwritev		/* 330 */
 	.long sys_rt_tgsigqueueinfo
 	.long sys_perf_event_open
+	.long sys_get_thread_area
+	.long sys_set_thread_area
+	.long sys_atomic_cmpxchg_32	/* 335 */
+	.long sys_atomic_barrier
 
diff --git a/arch/m68k/kernel/process.c b/arch/m68k/kernel/process.c
index 05296593e71..17c3f325255 100644
--- a/arch/m68k/kernel/process.c
+++ b/arch/m68k/kernel/process.c
@@ -251,6 +251,10 @@ int copy_thread(unsigned long clone_flags, unsigned long usp,
 
 	p->thread.usp = usp;
 	p->thread.ksp = (unsigned long)childstack;
+
+	if (clone_flags & CLONE_SETTLS)
+		task_thread_info(p)->tp_value = regs->d5;
+
 	/*
 	 * Must save the current SFC/DFC value, NOT the value when
 	 * the parent was last descheduled - RGH  10-08-96
diff --git a/arch/m68k/kernel/ptrace.c b/arch/m68k/kernel/ptrace.c
index 1fc217e5f06..616e59752c2 100644
--- a/arch/m68k/kernel/ptrace.c
+++ b/arch/m68k/kernel/ptrace.c
@@ -245,6 +245,11 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 			ret = -EFAULT;
 		break;
 
+	case PTRACE_GET_THREAD_AREA:
+		ret = put_user(task_thread_info(child)->tp_value,
+			       (unsigned long __user *)data);
+		break;
+
 	default:
 		ret = ptrace_request(child, request, addr, data);
 		break;
diff --git a/arch/m68k/kernel/signal.c b/arch/m68k/kernel/signal.c
index de2d05ddd86..4b387538706 100644
--- a/arch/m68k/kernel/signal.c
+++ b/arch/m68k/kernel/signal.c
@@ -897,10 +897,17 @@ static void setup_rt_frame (int sig, struct k_sigaction *ka, siginfo_t *info,
 
 	/* Set up to return from userspace.  */
 	err |= __put_user(frame->retcode, &frame->pretcode);
+#ifdef __mcoldfire__
+	/* movel #__NR_rt_sigreturn,d0; trap #0 */
+	err |= __put_user(0x203c0000, (long __user *)(frame->retcode + 0));
+	err |= __put_user(0x00004e40 + (__NR_rt_sigreturn << 16),
+			  (long __user *)(frame->retcode + 4));
+#else
 	/* moveq #,d0; notb d0; trap #0 */
 	err |= __put_user(0x70004600 + ((__NR_rt_sigreturn ^ 0xff) << 16),
 			  (long __user *)(frame->retcode + 0));
 	err |= __put_user(0x4e40, (short __user *)(frame->retcode + 4));
+#endif
 
 	if (err)
 		goto give_sigsegv;
diff --git a/arch/m68k/kernel/sys_m68k.c b/arch/m68k/kernel/sys_m68k.c
index 218f441de66..e3ad2d67197 100644
--- a/arch/m68k/kernel/sys_m68k.c
+++ b/arch/m68k/kernel/sys_m68k.c
@@ -28,6 +28,11 @@
 #include <asm/traps.h>
 #include <asm/page.h>
 #include <asm/unistd.h>
+#include <linux/elf.h>
+#include <asm/tlb.h>
+
+asmlinkage int do_page_fault(struct pt_regs *regs, unsigned long address,
+			     unsigned long error_code);
 
 asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
 	unsigned long prot, unsigned long flags,
@@ -595,3 +600,79 @@ int kernel_execve(const char *filename, char *const argv[], char *const envp[])
 			: "d" (__a), "d" (__b), "d" (__c));
 	return __res;
 }
+
+asmlinkage unsigned long sys_get_thread_area(void)
+{
+	return current_thread_info()->tp_value;
+}
+
+asmlinkage int sys_set_thread_area(unsigned long tp)
+{
+	current_thread_info()->tp_value = tp;
+	return 0;
+}
+
+/* This syscall gets its arguments in A0 (mem), D2 (oldval) and
+   D1 (newval).  */
+asmlinkage int
+sys_atomic_cmpxchg_32(unsigned long newval, int oldval, int d3, int d4, int d5,
+		      unsigned long __user * mem)
+{
+	/* This was borrowed from ARM's implementation.  */
+	for (;;) {
+		struct mm_struct *mm = current->mm;
+		pgd_t *pgd;
+		pmd_t *pmd;
+		pte_t *pte;
+		spinlock_t *ptl;
+		unsigned long mem_value;
+
+		down_read(&mm->mmap_sem);
+		pgd = pgd_offset(mm, (unsigned long)mem);
+		if (!pgd_present(*pgd))
+			goto bad_access;
+		pmd = pmd_offset(pgd, (unsigned long)mem);
+		if (!pmd_present(*pmd))
+			goto bad_access;
+		pte = pte_offset_map_lock(mm, pmd, (unsigned long)mem, &ptl);
+		if (!pte_present(*pte) || !pte_dirty(*pte)
+		    || !pte_write(*pte)) {
+			pte_unmap_unlock(pte, ptl);
+			goto bad_access;
+		}
+
+		mem_value = *mem;
+		if (mem_value == oldval)
+			*mem = newval;
+
+		pte_unmap_unlock(pte, ptl);
+		up_read(&mm->mmap_sem);
+		return mem_value;
+
+	      bad_access:
+		up_read(&mm->mmap_sem);
+		/* This is not necessarily a bad access, we can get here if
+		   a memory we're trying to write to should be copied-on-write.
+		   Make the kernel do the necessary page stuff, then re-iterate.
+		   Simulate a write access fault to do that.  */
+		{
+			/* The first argument of the function corresponds to
+			   D1, which is the first field of struct pt_regs.  */
+			struct pt_regs *fp = (struct pt_regs *)&newval;
+
+			/* '3' is an RMW flag.  */
+			if (do_page_fault(fp, (unsigned long)mem, 3))
+				/* If the do_page_fault() failed, we don't
+				   have anything meaningful to return.
+				   There should be a SIGSEGV pending for
+				   the process.  */
+				return 0xdeadbeef;
+		}
+	}
+}
+
+asmlinkage int sys_atomic_barrier(void)
+{
+	/* no code needed for uniprocs */
+	return 0;
+}
diff --git a/arch/m68k/mac/Makefile b/arch/m68k/mac/Makefile
index daebd80bdef..b8d4c835f9a 100644
--- a/arch/m68k/mac/Makefile
+++ b/arch/m68k/mac/Makefile
@@ -3,4 +3,4 @@
 #
 
 obj-y		:= config.o macints.o iop.o via.o oss.o psc.o \
-			baboon.o macboing.o debug.o misc.o
+			baboon.o macboing.o misc.o
diff --git a/arch/m68k/mac/config.c b/arch/m68k/mac/config.c
index be017984a45..0356da9bf76 100644
--- a/arch/m68k/mac/config.c
+++ b/arch/m68k/mac/config.c
@@ -23,6 +23,8 @@
 #include <linux/init.h>
 #include <linux/vt_kern.h>
 #include <linux/platform_device.h>
+#include <linux/adb.h>
+#include <linux/cuda.h>
 
 #define BOOTINFO_COMPAT_1_0
 #include <asm/setup.h>
@@ -44,12 +46,7 @@
 #include <asm/mac_oss.h>
 #include <asm/mac_psc.h>
 
-/* platform device info */
-
-#define SWIM_IO_SIZE 0x2000	/* SWIM IO resource size */
-
 /* Mac bootinfo struct */
-
 struct mac_booter_data mac_bi_data;
 
 /* The phys. video addr. - might be bogus on some machines */
@@ -70,8 +67,6 @@ extern void baboon_init(void);
 
 extern void mac_mksound(unsigned int, unsigned int);
 
-extern void nubus_sweep_video(void);
-
 static void mac_get_model(char *str);
 static void mac_identify(void);
 static void mac_report_hardware(void);
@@ -168,12 +163,6 @@ void __init config_mac(void)
 #if defined(CONFIG_INPUT_M68K_BEEP) || defined(CONFIG_INPUT_M68K_BEEP_MODULE)
 	mach_beep = mac_mksound;
 #endif
-#ifdef CONFIG_HEARTBEAT
-#if 0
-	mach_heartbeat = mac_heartbeat;
-	mach_heartbeat_irq = IRQ_MAC_TIMER;
-#endif
-#endif
 
 	/*
 	 * Determine hardware present
@@ -191,27 +180,19 @@ void __init config_mac(void)
 	if (macintosh_config->ident == MAC_MODEL_IICI
 	    || macintosh_config->ident == MAC_MODEL_IIFX)
 		mach_l2_flush = mac_cache_card_flush;
-
-	/*
-	 * Check for machine specific fixups.
-	 */
-
-#ifdef OLD_NUBUS_CODE
-	nubus_sweep_video();
-#endif
 }
 
 
 /*
- *	Macintosh Table: hardcoded model configuration data.
+ * Macintosh Table: hardcoded model configuration data.
  *
- *	Much of this was defined by Alan, based on who knows what docs.
- *	I've added a lot more, and some of that was pure guesswork based
- *	on hardware pages present on the Mac web site. Possibly wildly
- *	inaccurate, so look here if a new Mac model won't run. Example: if
- *	a Mac crashes immediately after the VIA1 registers have been dumped
- *	to the screen, it probably died attempting to read DirB on a RBV.
- *	Meaning it should have MAC_VIA_IIci here :-)
+ * Much of this was defined by Alan, based on who knows what docs.
+ * I've added a lot more, and some of that was pure guesswork based
+ * on hardware pages present on the Mac web site. Possibly wildly
+ * inaccurate, so look here if a new Mac model won't run. Example: if
+ * a Mac crashes immediately after the VIA1 registers have been dumped
+ * to the screen, it probably died attempting to read DirB on a RBV.
+ * Meaning it should have MAC_VIA_IIci here :-)
  */
 
 struct mac_model *macintosh_config;
@@ -219,7 +200,7 @@ EXPORT_SYMBOL(macintosh_config);
 
 static struct mac_model mac_data_table[] = {
 	/*
-	 *	We'll pretend to be a Macintosh II, that's pretty safe.
+	 * We'll pretend to be a Macintosh II, that's pretty safe.
 	 */
 
 	{
@@ -230,12 +211,11 @@ static struct mac_model mac_data_table[] = {
 		.scsi_type	= MAC_SCSI_OLD,
 		.scc_type	= MAC_SCC_II,
 		.nubus_type	= MAC_NUBUS,
-		.floppy_type	= MAC_FLOPPY_IWM
+		.floppy_type	= MAC_FLOPPY_IWM,
 	},
 
 	/*
-	 *	Original MacII hardware
-	 *
+	 * Original Mac II hardware
 	 */
 
 	{
@@ -246,7 +226,7 @@ static struct mac_model mac_data_table[] = {
 		.scsi_type	= MAC_SCSI_OLD,
 		.scc_type	= MAC_SCC_II,
 		.nubus_type	= MAC_NUBUS,
-		.floppy_type	= MAC_FLOPPY_IWM
+		.floppy_type	= MAC_FLOPPY_IWM,
 	}, {
 		.ident		= MAC_MODEL_IIX,
 		.name		= "IIx",
@@ -255,7 +235,7 @@ static struct mac_model mac_data_table[] = {
 		.scsi_type	= MAC_SCSI_OLD,
 		.scc_type	= MAC_SCC_II,
 		.nubus_type	= MAC_NUBUS,
-		.floppy_type	= MAC_FLOPPY_SWIM_ADDR2
+		.floppy_type	= MAC_FLOPPY_SWIM_ADDR2,
 	}, {
 		.ident		= MAC_MODEL_IICX,
 		.name		= "IIcx",
@@ -264,7 +244,7 @@ static struct mac_model mac_data_table[] = {
 		.scsi_type	= MAC_SCSI_OLD,
 		.scc_type	= MAC_SCC_II,
 		.nubus_type	= MAC_NUBUS,
-		.floppy_type    = MAC_FLOPPY_SWIM_ADDR2
+		.floppy_type	= MAC_FLOPPY_SWIM_ADDR2,
 	}, {
 		.ident		= MAC_MODEL_SE30,
 		.name		= "SE/30",
@@ -273,13 +253,13 @@ static struct mac_model mac_data_table[] = {
 		.scsi_type	= MAC_SCSI_OLD,
 		.scc_type	= MAC_SCC_II,
 		.nubus_type	= MAC_NUBUS,
-		.floppy_type    = MAC_FLOPPY_SWIM_ADDR2
+		.floppy_type	= MAC_FLOPPY_SWIM_ADDR2,
 	},
 
 	/*
-	 *	Weirdified MacII hardware - all subtly different. Gee thanks
-	 *	Apple. All these boxes seem to have VIA2 in a different place to
-	 *	the MacII (+1A000 rather than +4000)
+	 * Weirdified Mac II hardware - all subtly different. Gee thanks
+	 * Apple. All these boxes seem to have VIA2 in a different place to
+	 * the Mac II (+1A000 rather than +4000)
 	 * CSA: see http://developer.apple.com/technotes/hw/hw_09.html
 	 */
 
@@ -291,7 +271,7 @@ static struct mac_model mac_data_table[] = {
 		.scsi_type	= MAC_SCSI_OLD,
 		.scc_type	= MAC_SCC_II,
 		.nubus_type	= MAC_NUBUS,
-		.floppy_type    = MAC_FLOPPY_SWIM_ADDR2
+		.floppy_type	= MAC_FLOPPY_SWIM_ADDR2,
 	}, {
 		.ident		= MAC_MODEL_IIFX,
 		.name		= "IIfx",
@@ -300,7 +280,7 @@ static struct mac_model mac_data_table[] = {
 		.scsi_type	= MAC_SCSI_OLD,
 		.scc_type	= MAC_SCC_IOP,
 		.nubus_type	= MAC_NUBUS,
-		.floppy_type    = MAC_FLOPPY_SWIM_IOP
+		.floppy_type	= MAC_FLOPPY_SWIM_IOP,
 	}, {
 		.ident		= MAC_MODEL_IISI,
 		.name		= "IIsi",
@@ -309,7 +289,7 @@ static struct mac_model mac_data_table[] = {
 		.scsi_type	= MAC_SCSI_OLD,
 		.scc_type	= MAC_SCC_II,
 		.nubus_type	= MAC_NUBUS,
-		.floppy_type    = MAC_FLOPPY_SWIM_ADDR2
+		.floppy_type	= MAC_FLOPPY_SWIM_ADDR2,
 	}, {
 		.ident		= MAC_MODEL_IIVI,
 		.name		= "IIvi",
@@ -318,7 +298,7 @@ static str