Merge nuts.ninka.net:/home/davem/src/BK/sparcwork-2.5

into nuts.ninka.net:/home/davem/src/BK/sparc-2.5

arch/sparc/boot/Makefile

@@ -32,3 +32,6 @@ $(obj)/tftpboot.img: $(obj)/piggyback $(obj)/System.map $(obj)/image FORCE
 
 $(obj)/btfix.s: $(obj)/btfixupprep vmlinux FORCE
 	$(call if_changed,btfix)
+
+clean:
+	rm $(obj)/System.map

arch/sparc/defconfig

@@ -138,29 +138,61 @@ CONFIG_BLK_DEV_INITRD=y
 CONFIG_SCSI=y
 
 #
-# SCSI support type (disk, tape, CDrom)
+# SCSI support type (disk, tape, CD-ROM)
 #
 CONFIG_BLK_DEV_SD=y
-CONFIG_SD_EXTRA_DEVS=40
 # CONFIG_CHR_DEV_ST is not set
 # CONFIG_CHR_DEV_OSST is not set
 CONFIG_BLK_DEV_SR=m
 # CONFIG_BLK_DEV_SR_VENDOR is not set
-CONFIG_SR_EXTRA_DEVS=2
 CONFIG_CHR_DEV_SG=m
 
 #
 # Some SCSI devices (e.g. CD jukebox) support multiple LUNs
 #
 # CONFIG_SCSI_MULTI_LUN is not set
+CONFIG_SCSI_REPORT_LUNS=y
 # CONFIG_SCSI_CONSTANTS is not set
 # CONFIG_SCSI_LOGGING is not set
 
 #
 # SCSI low-level drivers
 #
-CONFIG_SCSI_SUNESP=y
+# CONFIG_BLK_DEV_3W_XXXX_RAID is not set
+# CONFIG_SCSI_ACARD is not set
+# CONFIG_SCSI_AACRAID is not set
+# CONFIG_SCSI_AIC7XXX is not set
+# CONFIG_SCSI_AIC7XXX_OLD is not set
+# CONFIG_SCSI_AIC79XX is not set
+# CONFIG_SCSI_DPT_I2O is not set
+# CONFIG_SCSI_ADVANSYS is not set
+# CONFIG_SCSI_AM53C974 is not set
+# CONFIG_SCSI_MEGARAID is not set
+# CONFIG_SCSI_BUSLOGIC is not set
+# CONFIG_SCSI_CPQFCTS is not set
+# CONFIG_SCSI_DMX3191D is not set
+# CONFIG_SCSI_EATA is not set
+# CONFIG_SCSI_EATA_PIO is not set
+# CONFIG_SCSI_FUTURE_DOMAIN is not set
+# CONFIG_SCSI_GDTH is not set
+# CONFIG_SCSI_GENERIC_NCR5380 is not set
+# CONFIG_SCSI_GENERIC_NCR5380_MMIO is not set
+# CONFIG_SCSI_INITIO is not set
+# CONFIG_SCSI_INIA100 is not set
+# CONFIG_SCSI_SYM53C8XX_2 is not set
+# CONFIG_SCSI_NCR53C8XX is not set
+# CONFIG_SCSI_PCI2000 is not set
+# CONFIG_SCSI_PCI2220I is not set
+# CONFIG_SCSI_QLOGIC_ISP is not set
+# CONFIG_SCSI_QLOGIC_FC is not set
+# CONFIG_SCSI_QLOGIC_1280 is not set
 CONFIG_SCSI_QLOGICPTI=m
+# CONFIG_SCSI_DC395x is not set
+# CONFIG_SCSI_DC390T is not set
+# CONFIG_SCSI_U14_34F is not set
+# CONFIG_SCSI_NSP32 is not set
+# CONFIG_SCSI_DEBUG is not set
+CONFIG_SCSI_SUNESP=y
 
 #
 # Fibre Channel support

arch/sparc/kernel/Makefile

@@ -12,8 +12,9 @@ obj-y    := entry.o wof.o wuf.o etrap.o rtrap.o traps.o $(IRQ_OBJS) \
 	    sys_sparc.o sunos_asm.o systbls.o \
 	    time.o windows.o cpu.o devices.o sclow.o \
 	    tadpole.o tick14.o ptrace.o sys_solaris.o \
-	    unaligned.o muldiv.o pcic.o semaphore.o sparc_ksyms.o
+	    unaligned.o muldiv.o semaphore.o sparc_ksyms.o
 
+obj-$(CONFIG_PCI) += pcic.o
 obj-$(CONFIG_SUN4) += sun4setup.o
 obj-$(CONFIG_SMP) += trampoline.o smp.o sun4m_smp.o sun4d_smp.o
 obj-$(CONFIG_SUN_AUXIO) += auxio.o

arch/sparc/kernel/pcic.c

@@ -35,27 +35,6 @@
 #include <asm/timer.h>
 #include <asm/uaccess.h>
 
-#ifndef CONFIG_PCI
-
-asmlinkage int sys_pciconfig_read(unsigned long bus,
-				  unsigned long dfn,
-				  unsigned long off,
-				  unsigned long len,
-				  unsigned char *buf)
-{
-	return -EINVAL;
-}
-
-asmlinkage int sys_pciconfig_write(unsigned long bus,
-				   unsigned long dfn,
-				   unsigned long off,
-				   unsigned long len,
-				   unsigned char *buf)
-{
-	return -EINVAL;
-}
-
-#else
 
 struct pci_fixup pcibios_fixups[] = {
 	{ 0 }
@@ -1044,5 +1023,3 @@ void insl(unsigned long addr, void *dst, unsigned long count) {
 }
 
 subsys_initcall(pcic_init);
-
-#endif

arch/sparc/kernel/process.c

@@ -287,13 +287,22 @@ void show_regs(struct pt_regs *r)
 	       rw->ins[4], rw->ins[5], rw->ins[6], rw->ins[7]);
 }
 
+/*
+ * The show_stack is an external API which we do not use ourselves.
+ * The oops is printed in die_if_kernel.
+ */
 void show_stack(struct task_struct *tsk, unsigned long *_ksp)
 {
 	unsigned long pc, fp;
-	unsigned long task_base = (unsigned long) tsk;
+	unsigned long task_base;
 	struct reg_window *rw;
 	int count = 0;
 
+	if (tsk != NULL)
+		task_base = (unsigned long) tsk->thread_info;
+	else
+		task_base = (unsigned long) current_thread_info();
+
 	fp = (unsigned long) _ksp;
 	do {
 		/* Bogus frame pointer? */
@@ -308,13 +317,6 @@ void show_stack(struct task_struct *tsk, unsigned long *_ksp)
 	printk("\n");
 }
 
-void show_trace_task(struct task_struct *tsk)
-{
-	if (tsk)
-		show_stack(tsk,
-			   (unsigned long *) tsk->thread_info->ksp);
-}
-
 /*
  * Note: sparc64 has a pretty intricated thread_saved_pc, check it out.
  */

arch/sparc/kernel/sys_sparc.c

@@ -123,7 +123,10 @@ asmlinkage int sys_ipc (uint call, int first, int second, int third, void __user
 	if (call <= SEMCTL)
 		switch (call) {
 		case SEMOP:
-			err = sys_semop (first, (struct sembuf __user *)ptr, second);
+			err = sys_semtimedop (first, (struct sembuf __user *)ptr, second, NULL);
+			goto out;
+		case SEMTIMEDOP:
+			err = sys_semtimedop (first, (struct sembuf __user *)ptr, second, (const struct timespec __user *) fifth);
 			goto out;
 		case SEMGET:
 			err = sys_semget (first, second, third);

arch/sparc/mm/srmmu.c

@@ -148,6 +148,9 @@ extern unsigned long fix_kmap_end;
 /* 1 bit <=> 256 bytes of nocache <=> 64 PTEs */
 #define SRMMU_NOCACHE_BITMAP_SHIFT (PAGE_SHIFT - 4)
 
+/* The context table is a nocache user with the biggest alignment needs. */
+#define SRMMU_NOCACHE_ALIGN_MAX (sizeof(ctxd_t)*SRMMU_MAX_CONTEXTS)
+
 void *srmmu_nocache_pool;
 void *srmmu_nocache_bitmap;
 static struct bit_map srmmu_nocache_map;
@@ -320,6 +323,10 @@ static unsigned long __srmmu_get_nocache(int size, int align)
 		printk("Size 0x%x unaligned int nocache request\n", size);
 		size += SRMMU_NOCACHE_BITMAP_SHIFT-1;
 	}
+	if (align > SRMMU_NOCACHE_ALIGN_MAX) {
+		BUG();
+		return 0;
+	}
 
 	offset = bit_map_string_get(&srmmu_nocache_map,
 		       			size >> SRMMU_NOCACHE_BITMAP_SHIFT,
@@ -425,7 +432,8 @@ void srmmu_nocache_init(void)
 
 	bitmap_bits = srmmu_nocache_size >> SRMMU_NOCACHE_BITMAP_SHIFT;
 
-	srmmu_nocache_pool = __alloc_bootmem(srmmu_nocache_size, PAGE_SIZE, 0UL);
+	srmmu_nocache_pool = __alloc_bootmem(srmmu_nocache_size,
+		SRMMU_NOCACHE_ALIGN_MAX, 0UL);
 	memset(srmmu_nocache_pool, 0, srmmu_nocache_size);
 
 	srmmu_nocache_bitmap = __alloc_bootmem(bitmap_bits >> 3, SMP_CACHE_BYTES, 0UL);

arch/sparc64/Kconfig

@@ -924,13 +924,6 @@ config DEBUG_SPINLOCK
 	  best used in conjunction with the NMI watchdog so that spinlock
 	  deadlocks are also debuggable.
 
-config KALLSYMS
-	bool "Load all symbols for debugging/ksymoops"
-	help
-	  Say Y here to let the kernel print out symbolic crash information and
-	  symbolic stack backtraces. This increases the size of the kernel
-	  somewhat, as all symbols have to be loaded into the kernel image.
-
 config DEBUG_SPINLOCK_SLEEP
 	bool "Sleep-inside-spinlock checking"
 	help

arch/sparc64/kernel/entry.S

@@ -1749,8 +1749,8 @@ ret_sys_call:
 	cmp		%o0, -ENOIOCTLCMD
 	sllx		%g2, 32, %g2
 	bgeu,pn		%xcc, 1f
-
 	 andcc		%l0, _TIF_SYSCALL_TRACE, %l6	
+80:
 	andn		%g3, %g2, %g3		/* System call success, clear Carry condition code. */
 	stx		%g3, [%sp + PTREGS_OFF + PT_V9_TSTATE]	
 	bne,pn		%icc, linux_syscall_trace2
@@ -1760,9 +1760,21 @@ ret_sys_call:
 	 stx		%l2, [%sp + PTREGS_OFF + PT_V9_TNPC]
 
 1:
+	/* Really a failure?  Check if force_successful_syscall_return()
+	 * was invoked.
+	 */
+	ldx		[%curptr + TI_FLAGS], %l0		! Load
+	andcc		%l0, _TIF_SYSCALL_SUCCESS, %g0
+	be,pt		%icc, 1f
+	 andcc		%l0, _TIF_SYSCALL_TRACE, %l6	
+	andn		%l0, _TIF_SYSCALL_SUCCESS, %l0
+	ba,pt		%xcc, 80b
+	 stx		%l0, [%curptr + TI_FLAGS]
+
 	/* System call failure, set Carry condition code.
 	 * Also, get abs(errno) to return to the process.
 	 */
+1:
 	sub		%g0, %o0, %o0
 	or		%g3, %g2, %g3
 	stx		%o0, [%sp + PTREGS_OFF + PT_V9_I0]

arch/sparc64/kernel/sys_sparc.c

@@ -46,8 +46,10 @@ asmlinkage unsigned long sys_getpagesize(void)
 
 unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags)
 {
-	struct vm_area_struct * vmm;
+	struct mm_struct *mm = current->mm;
+	struct vm_area_struct * vma;
 	unsigned long task_size = TASK_SIZE;
+	unsigned long start_addr;
 	int do_color_align;
 
 	if (flags & MAP_FIXED) {
@@ -63,30 +65,54 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi
 		task_size = 0xf0000000UL;
 	if (len > task_size || len > -PAGE_OFFSET)
 		return -ENOMEM;
-	if (!addr)
-		addr = TASK_UNMAPPED_BASE;
 
 	do_color_align = 0;
 	if (filp || (flags & MAP_SHARED))
 		do_color_align = 1;
 
+	if (addr) {
+		if (do_color_align)
+			addr = COLOUR_ALIGN(addr, pgoff);
+		else
+			addr = PAGE_ALIGN(addr);
+
+		vma = find_vma(mm, addr);
+		if (task_size - len >= addr &&
+		    (!vma || addr + len <= vma->vm_start))
+			return addr;
+	}
+
+	start_addr = addr = mm->free_area_cache;
+
+	task_size -= len;
+
+full_search:
 	if (do_color_align)
 		addr = COLOUR_ALIGN(addr, pgoff);
 	else
 		addr = PAGE_ALIGN(addr);
-	task_size -= len;
 
-	for (vmm = find_vma(current->mm, addr); ; vmm = vmm->vm_next) {
-		/* At this point:  (!vmm || addr < vmm->vm_end). */
+	for (vma = find_vma(mm, addr); ; vma = vma->vm_next) {
+		/* At this point:  (!vma || addr < vma->vm_end). */
 		if (addr < PAGE_OFFSET && -PAGE_OFFSET - len < addr) {
 			addr = PAGE_OFFSET;
-			vmm = find_vma(current->mm, PAGE_OFFSET);
+			vma = find_vma(mm, PAGE_OFFSET);
 		}
-		if (task_size < addr)
+		if (task_size < addr) {
+			if (start_addr != TASK_UNMAPPED_BASE) {
+				start_addr = addr = TASK_UNMAPPED_BASE;
+				goto full_search;
+			}
 			return -ENOMEM;
-		if (!vmm || addr + len <= vmm->vm_start)
+		}
+		if (!vma || addr + len <= vma->vm_start) {
+			/*
+			 * Remember the place where we stopped the search:
+			 */
+			mm->free_area_cache = addr + len;
 			return addr;
-		addr = vmm->vm_end;
+		}
+		addr = vma->vm_end;
 		if (do_color_align)
 			addr = COLOUR_ALIGN(addr, pgoff);
 	}
@@ -182,7 +208,10 @@ asmlinkage int sys_ipc (unsigned call, int first, int second, unsigned long thir
 	if (call <= SEMCTL)
 		switch (call) {
 		case SEMOP:
-			err = sys_semop (first, (struct sembuf *)ptr, second);
+			err = sys_semtimedop (first, (struct sembuf *)ptr, second, NULL);
+			goto out;
+		case SEMTIMEDOP:
+			err = sys_semtimedop (first, (struct sembuf *)ptr, second, (const struct timespec *) fifth);
 			goto out;
 		case SEMGET:
 			err = sys_semget (first, second, (int)third);

arch/sparc64/kernel/sys_sparc32.c

@@ -480,7 +480,7 @@ static int do_sys32_semctl(int first, int second, int third, void *uptr)
 
 static int do_sys32_msgsnd (int first, int second, int third, void *uptr)
 {
-	struct msgbuf *p = kmalloc (second + sizeof (struct msgbuf) + 4, GFP_USER);
+	struct msgbuf *p = kmalloc (second + sizeof (struct msgbuf), GFP_USER);
 	struct msgbuf32 *up = (struct msgbuf32 *)uptr;
 	mm_segment_t old_fs;
 	int err;
@@ -522,12 +522,12 @@ static int do_sys32_msgrcv (int first, int second, int msgtyp, int third,
 		msgtyp = ipck.msgtyp;
 	}
 	err = -ENOMEM;
-	p = kmalloc (second + sizeof (struct msgbuf) + 4, GFP_USER);
+	p = kmalloc (second + sizeof (struct msgbuf), GFP_USER);
 	if (!p)
 		goto out;
 	old_fs = get_fs ();
 	set_fs (KERNEL_DS);
-	err = sys_msgrcv (first, p, second + 4, msgtyp, third);
+	err = sys_msgrcv (first, p, second, msgtyp, third);
 	set_fs (old_fs);
 	if (err < 0)
 		goto free_then_out;
@@ -736,6 +736,22 @@ static int do_sys32_shmctl (int first, int second, void *uptr)
 	return err;
 }
 
+static int sys32_semtimedop(int semid, struct sembuf *tsems, int nsems,
+			    const struct compat_timespec *timeout32)
+{
+	struct compat_timespec t32;
+	struct timespec *t64 = compat_alloc_user_space(sizeof(*t64));
+
+	if (copy_from_user(&t32, timeout32, sizeof(t32)))
+		return -EFAULT;
+
+	if (put_user(t32.tv_sec, &t64->tv_sec) ||
+	    put_user(t32.tv_nsec, &t64->tv_nsec))
+		return -EFAULT;
+
+	return sys_semtimedop(semid, tsems, nsems, t64);
+}
+
 asmlinkage int sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth)
 {
 	int version, err;
@@ -747,8 +763,10 @@ asmlinkage int sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u
 		switch (call) {
 		case SEMOP:
 			/* struct sembuf is the same on 32 and 64bit :)) */
-			err = sys_semop (first, (struct sembuf *)AA(ptr), second);
+			err = sys_semtimedop (first, (struct sembuf *)AA(ptr), second, NULL);
 			goto out;
+		case SEMTIMEDOP:
+			err = sys32_semtimedop (first, (struct sembuf *)AA(ptr), second, (const struct compat_timespec *) AA(fifth));
 		case SEMGET:
 			err = sys_semget (first, second, third);
 			goto out;

include/asm-sparc/ipc.h

@@ -14,6 +14,7 @@ struct ipc_kludge {
 #define SEMOP		 1
 #define SEMGET		 2
 #define SEMCTL		 3
+#define SEMTIMEDOP	 4
 #define MSGSND		11
 #define MSGRCV		12
 #define MSGGET		13

include/asm-sparc/pgtsrmmu.h

@@ -13,6 +13,9 @@
 #include <asm/thread_info.h>	/* TI_UWINMASK for WINDOW_FLUSH */
 #endif
 
+/* Number of contexts is implementation-dependent; 64k is the most we support */
+#define SRMMU_MAX_CONTEXTS	65536
+
 /* PMD_SHIFT determines the size of the area a second-level page table entry can map */
 #define SRMMU_PMD_SHIFT         18
 #define SRMMU_PMD_SIZE          (1UL << SRMMU_PMD_SHIFT)

include/asm-sparc64/ipc.h

@@ -14,6 +14,7 @@ struct ipc_kludge {
 #define SEMOP		 1
 #define SEMGET		 2
 #define SEMCTL		 3
+#define SEMTIMEDOP	 4
 #define MSGSND		11
 #define MSGRCV		12
 #define MSGGET		13

include/asm-sparc64/ptrace.h

@@ -94,6 +94,8 @@ struct sparc_trapf {
 #define STACKFRAME32_SZ	sizeof(struct sparc_stackf32)
 
 #ifdef __KERNEL__
+#define force_successful_syscall_return()	\
+	set_thread_flag(TIF_SYSCALL_SUCCESS)
 #define user_mode(regs) (!((regs)->tstate & TSTATE_PRIV))
 #define instruction_pointer(regs) ((regs)->tpc)
 extern void show_regs(struct pt_regs *);

include/asm-sparc64/thread_info.h

@@ -205,7 +205,12 @@ register struct thread_info *current_thread_info_reg asm("g6");
 #define TIF_BLKCOMMIT		9	/* use ASI_BLK_COMMIT_* in copy_user_page */
 
 #define TIF_POLLING_NRFLAG	10
-#define TIF_ABI_PENDING		11
+#define TIF_SYSCALL_SUCCESS	11
+/* NOTE: Thread flags >= 12 should be ones we have no interest
+ *       in using in assembly, else we can't use the mask as
+ *       an immediate value in instructions such as andcc.
+ */
+#define TIF_ABI_PENDING		12
 
 #define _TIF_SYSCALL_TRACE	(1<<TIF_SYSCALL_TRACE)
 #define _TIF_NOTIFY_RESUME	(1<<TIF_NOTIFY_RESUME)
@@ -219,6 +224,7 @@ register struct thread_info *current_thread_info_reg asm("g6");
 #define _TIF_BLKCOMMIT		(1<<TIF_BLKCOMMIT)
 #define _TIF_POLLING_NRFLAG	(1<<TIF_POLLING_NRFLAG)
 #define _TIF_ABI_PENDING	(1<<TIF_ABI_PENDING)
+#define _TIF_SYSCALL_SUCCESS	(1<<TIF_SYSCALL_SUCCESS)
 
 #define _TIF_USER_WORK_MASK	((0xff << TI_FLAG_WSAVED_SHIFT) | \
 				 (_TIF_NOTIFY_RESUME | _TIF_SIGPENDING | \

kernel/sys.c

@@ -233,6 +233,8 @@ cond_syscall(compat_sys_futex)
 cond_syscall(sys_epoll_create)
 cond_syscall(sys_epoll_ctl)
 cond_syscall(sys_epoll_wait)
+cond_syscall(sys_pciconfig_read)
+cond_syscall(sys_pciconfig_write)
 
 static int set_one_prio(struct task_struct *p, int niceval, int error)
 {