Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc

16 files changed, 82 insertions, 36 deletions

diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index 10696456a4c..3191be7135f 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -891,7 +891,7 @@ struct cpu_spec	cpu_specs[] = {
 		.platform		= "ppc405",
 	},
 	{	/* Xilinx Virtex-II Pro  */
-		.pvr_mask		= 0xffff0000,
+		.pvr_mask		= 0xfffff000,
 		.pvr_value		= 0x20010000,
 		.cpu_name		= "Virtex-II Pro",
 		.cpu_features		= CPU_FTRS_40X,
@@ -901,6 +901,16 @@ struct cpu_spec	cpu_specs[] = {
 		.dcache_bsize		= 32,
 		.platform		= "ppc405",
 	},
+	{	/* Xilinx Virtex-4 FX */
+		.pvr_mask		= 0xfffff000,
+		.pvr_value		= 0x20011000,
+		.cpu_name		= "Virtex-4 FX",
+		.cpu_features		= CPU_FTRS_40X,
+		.cpu_user_features	= PPC_FEATURE_32 |
+			PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
+		.icache_bsize		= 32,
+		.dcache_bsize		= 32,
+	},
 	{	/* 405EP */
 		.pvr_mask		= 0xffff0000,
 		.pvr_value		= 0x51210000,
diff --git a/arch/powerpc/kernel/fpu.S b/arch/powerpc/kernel/fpu.S
index e4362dfa37f..340730fb8c9 100644
--- a/arch/powerpc/kernel/fpu.S
+++ b/arch/powerpc/kernel/fpu.S
@@ -66,7 +66,7 @@ _GLOBAL(load_up_fpu)
 #else
 	ld	r4,PACACURRENT(r13)
 	addi	r5,r4,THREAD		/* Get THREAD */
-	ld	r4,THREAD_FPEXC_MODE(r5)
+	lwz	r4,THREAD_FPEXC_MODE(r5)
 	ori	r12,r12,MSR_FP
 	or	r12,r12,r4
 	std	r12,_MSR(r1)
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index 30826846634..41565962939 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -749,11 +749,12 @@ iSeries_secondary_smp_loop:
 
 	.globl decrementer_iSeries_masked
 decrementer_iSeries_masked:
+	/* We may not have a valid TOC pointer in here. */
 	li	r11,1
 	ld	r12,PACALPPACAPTR(r13)
 	stb	r11,LPPACADECRINT(r12)
-	LOAD_REG_ADDRBASE(r12,tb_ticks_per_jiffy)
-	lwz	r12,ADDROFF(tb_ticks_per_jiffy)(r12)
+	LOAD_REG_IMMEDIATE(r12, tb_ticks_per_jiffy)
+	lwz	r12,0(r12)
 	mtspr	SPRN_DEC,r12
 	/* fall through */
 
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index 4d9b4388918..946f3219fd2 100644
--- a/arch/powerpc/kernel/iommu.c
+++ b/arch/powerpc/kernel/iommu.c
@@ -334,9 +334,6 @@ int iommu_map_sg(struct device *dev, struct iommu_table *tbl,
 
 	spin_unlock_irqrestore(&(tbl->it_lock), flags);
 
-	/* Make sure updates are seen by hardware */
-	mb();
-
 	DBG("mapped %d elements:\n", outcount);
 
 	/* For the sake of iommu_unmap_sg, we clear out the length in the
@@ -347,6 +344,10 @@ int iommu_map_sg(struct device *dev, struct iommu_table *tbl,
 		outs->dma_address = DMA_ERROR_CODE;
 		outs->dma_length = 0;
 	}
+
+	/* Make sure updates are seen by hardware */
+	mb();
+
 	return outcount;
 
  failure:
@@ -358,6 +359,8 @@ int iommu_map_sg(struct device *dev, struct iommu_table *tbl,
 			npages = (PAGE_ALIGN(s->dma_address + s->dma_length) - vaddr)
 				>> PAGE_SHIFT;
 			__iommu_free(tbl, vaddr, npages);
+			s->dma_address = DMA_ERROR_CODE;
+			s->dma_length = 0;
 		}
 	}
 	spin_unlock_irqrestore(&(tbl->it_lock), flags);
diff --git a/arch/powerpc/kernel/legacy_serial.c b/arch/powerpc/kernel/legacy_serial.c
index f970ace208d..c7a799a0951 100644
--- a/arch/powerpc/kernel/legacy_serial.c
+++ b/arch/powerpc/kernel/legacy_serial.c
@@ -134,7 +134,6 @@ static int __init add_legacy_soc_port(struct device_node *np,
 	return add_legacy_port(np, -1, UPIO_MEM, addr, addr, NO_IRQ, flags);
 }
 
-#ifdef CONFIG_ISA
 static int __init add_legacy_isa_port(struct device_node *np,
 				      struct device_node *isa_brg)
 {
@@ -168,7 +167,6 @@ static int __init add_legacy_isa_port(struct device_node *np,
 	return add_legacy_port(np, index, UPIO_PORT, reg[1], taddr, NO_IRQ, UPF_BOOT_AUTOCONF);
 
 }
-#endif
 
 #ifdef CONFIG_PCI
 static int __init add_legacy_pci_port(struct device_node *np,
@@ -276,7 +274,6 @@ void __init find_legacy_serial_ports(void)
 		of_node_put(soc);
 	}
 
-#ifdef CONFIG_ISA
 	/* First fill our array with ISA ports */
 	for (np = NULL; (np = of_find_node_by_type(np, "serial"));) {
 		struct device_node *isa = of_get_parent(np);
@@ -287,7 +284,6 @@ void __init find_legacy_serial_ports(void)
 		}
 		of_node_put(isa);
 	}
-#endif
 
 #ifdef CONFIG_PCI
 	/* Next, try to locate PCI ports */
diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c
index d9a459c144d..b212d3e64b8 100644
--- a/arch/powerpc/kernel/ppc_ksyms.c
+++ b/arch/powerpc/kernel/ppc_ksyms.c
@@ -57,7 +57,6 @@ extern void machine_check_exception(struct pt_regs *regs);
 extern void alignment_exception(struct pt_regs *regs);
 extern void program_check_exception(struct pt_regs *regs);
 extern void single_step_exception(struct pt_regs *regs);
-extern int pmac_newworld;
 extern int sys_sigreturn(struct pt_regs *regs);
 
 EXPORT_SYMBOL(clear_pages);
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index d50c8df0183..82d117c60d7 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -491,7 +491,12 @@ void __init finish_device_tree(void)
 	size = 16;
 	finish_node(allnodes, &size, 1);
 	size -= 16;
-	end = start = (unsigned long) __va(lmb_alloc(size, 128));
+
+	if (0 == size)
+		end = start = 0;
+	else
+		end = start = (unsigned long)__va(lmb_alloc(size, 128));
+
 	finish_node(allnodes, &end, 0);
 	BUG_ON(end != start + size);
 
@@ -826,10 +831,6 @@ void __init unflatten_device_tree(void)
 
 	/* Allocate memory for the expanded device tree */
 	mem = lmb_alloc(size + 4, __alignof__(struct device_node));
-	if (!mem) {
-		DBG("Couldn't allocate memory with lmb_alloc()!\n");
-		panic("Couldn't allocate memory with lmb_alloc()!\n");
-	}
 	mem = (unsigned long) __va(mem);
 
 	((u32 *)mem)[size / 4] = 0xdeadbeef;
@@ -1398,8 +1399,8 @@ struct device_node *of_find_node_by_name(struct device_node *from,
 
 	read_lock(&devtree_lock);
 	np = from ? from->allnext : allnodes;
-	for (; np != 0; np = np->allnext)
-		if (np->name != 0 && strcasecmp(np->name, name) == 0
+	for (; np != NULL; np = np->allnext)
+		if (np->name != NULL && strcasecmp(np->name, name) == 0
 		    && of_node_get(np))
 			break;
 	if (from)
@@ -1917,3 +1918,30 @@ int prom_update_property(struct device_node *np,
 
 	return 0;
 }
+
+#ifdef CONFIG_KEXEC
+/* We may have allocated the flat device tree inside the crash kernel region
+ * in prom_init. If so we need to move it out into regular memory. */
+void kdump_move_device_tree(void)
+{
+	unsigned long start, end;
+	struct boot_param_header *new;
+
+	start = __pa((unsigned long)initial_boot_params);
+	end = start + initial_boot_params->totalsize;
+
+	if (end < crashk_res.start || start > crashk_res.end)
+		return;
+
+	new = (struct boot_param_header*)
+		__va(lmb_alloc(initial_boot_params->totalsize, PAGE_SIZE));
+
+	memcpy(new, initial_boot_params, initial_boot_params->totalsize);
+
+	initial_boot_params = new;
+
+	DBG("Flat device tree blob moved to %p\n", initial_boot_params);
+
+	/* XXX should we unreserve the old DT? */
+}
+#endif /* CONFIG_KEXEC */
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 7881ec96ef1..ec7153f4d47 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -2098,6 +2098,10 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4,
 	 */
 	prom_init_stdout();
 
+	/* Bail if this is a kdump kernel. */
+	if (PHYSICAL_START > 0)
+		prom_panic("Error: You can't boot a kdump kernel from OF!\n");
+
 	/*
 	 * Check for an initrd
 	 */
diff --git a/arch/powerpc/kernel/prom_parse.c b/arch/powerpc/kernel/prom_parse.c
index a8099c80615..3934c227549 100644
--- a/arch/powerpc/kernel/prom_parse.c
+++ b/arch/powerpc/kernel/prom_parse.c
@@ -465,8 +465,10 @@ u32 *of_get_pci_address(struct device_node *dev, int bar_no, u64 *size,
 	if (parent == NULL)
 		return NULL;
 	bus = of_match_bus(parent);
-	if (strcmp(bus->name, "pci"))
+	if (strcmp(bus->name, "pci")) {
+		of_node_put(parent);
 		return NULL;
+	}
 	bus->count_cells(dev, &na, &ns);
 	of_node_put(parent);
 	if (!OF_CHECK_COUNTS(na, ns))
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index 7fe4a5c944c..b5b2add7ad1 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -22,6 +22,7 @@
 
 #include <asm/prom.h>
 #include <asm/rtas.h>
+#include <asm/hvcall.h>
 #include <asm/semaphore.h>
 #include <asm/machdep.h>
 #include <asm/page.h>
@@ -565,6 +566,7 @@ static int ibm_suspend_me_token = RTAS_UNKNOWN_SERVICE;
 #ifdef CONFIG_PPC_PSERIES
 static void rtas_percpu_suspend_me(void *info)
 {
+	int i;
 	long rc;
 	long flags;
 	struct rtas_suspend_me_data *data =
@@ -587,18 +589,16 @@ static void rtas_percpu_suspend_me(void *info)
 
 	if (rc == H_Continue) {
 		data->waiting = 0;
-		rtas_call(ibm_suspend_me_token, 0, 1,
-			  data->args->args);
+		data->args->args[data->args->nargs] =
+			rtas_call(ibm_suspend_me_token, 0, 1, NULL);
+		for_each_cpu(i)
+			plpar_hcall_norets(H_PROD,i);
 	} else {
 		data->waiting = -EBUSY;
 		printk(KERN_ERR "Error on H_Join hypervisor call\n");
 	}
 
 out:
-	/* before we restore interrupts, make sure we don't
-	 * generate a spurious soft lockup errors
-	 */
-	touch_softlockup_watchdog();
 	local_irq_restore(flags);
 	return;
 }
diff --git a/arch/powerpc/kernel/rtas_flash.c b/arch/powerpc/kernel/rtas_flash.c
index 50500093c97..aaf384c3f04 100644
--- a/arch/powerpc/kernel/rtas_flash.c
+++ b/arch/powerpc/kernel/rtas_flash.c
@@ -672,8 +672,7 @@ static void rtas_flash_firmware(int reboot_type)
 static void remove_flash_pde(struct proc_dir_entry *dp)
 {
 	if (dp) {
-		if (dp->data != NULL)
-			kfree(dp->data);
+		kfree(dp->data);
 		dp->owner = NULL;
 		remove_proc_entry(dp->name, dp->parent);
 	}
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index e29b275e09e..a717dff695e 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -398,6 +398,9 @@ void __init setup_system(void)
 {
 	DBG(" -> setup_system()\n");
 
+#ifdef CONFIG_KEXEC
+	kdump_move_device_tree();
+#endif
 	/*
 	 * Unflatten the device-tree passed by prom_init or kexec
 	 */
diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c
index 3747ab0dac3..c6d0595da6b 100644
--- a/arch/powerpc/kernel/signal_32.c
+++ b/arch/powerpc/kernel/signal_32.c
@@ -254,11 +254,9 @@ int do_signal(sigset_t *oldset, struct pt_regs *regs);
  */
 long sys_sigsuspend(old_sigset_t mask)
 {
-	sigset_t saveset;
-
 	mask &= _BLOCKABLE;
 	spin_lock_irq(&current->sighand->siglock);
-	saveset = current->blocked;
+	current->saved_sigmask = current->blocked;
 	siginitset(&current->blocked, mask);
 	recalc_sigpending();
 	spin_unlock_irq(&current->sighand->siglock);
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index c8458c531b2..13595a64f01 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -540,6 +540,9 @@ int __devinit start_secondary(void *unused)
 	if (smp_ops->take_timebase)
 		smp_ops->take_timebase();
 
+	if (system_state > SYSTEM_BOOTING)
+		per_cpu(last_jiffy, cpu) = get_tb();
+
 	spin_lock(&call_lock);
 	cpu_set(cpu, cpu_online_map);
 	spin_unlock(&call_lock);
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index c4a294d657b..1886045a2fd 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -612,10 +612,10 @@ void __init generic_calibrate_decr(void)
 
 	ppc_tb_freq = DEFAULT_TB_FREQ;		/* hardcoded default */
 	node_found = 0;
-	if (cpu != 0) {
+	if (cpu) {
 		fp = (unsigned int *)get_property(cpu, "timebase-frequency",
 						  NULL);
-		if (fp != 0) {
+		if (fp) {
 			node_found = 1;
 			ppc_tb_freq = *fp;
 		}
@@ -626,10 +626,10 @@ void __init generic_calibrate_decr(void)
 
 	ppc_proc_freq = DEFAULT_PROC_FREQ;
 	node_found = 0;
-	if (cpu != 0) {
+	if (cpu) {
 		fp = (unsigned int *)get_property(cpu, "clock-frequency",
 						  NULL);
-		if (fp != 0) {
+		if (fp) {
 			node_found = 1;
 			ppc_proc_freq = *fp;
 		}
diff --git a/arch/powerpc/kernel/udbg_16550.c b/arch/powerpc/kernel/udbg_16550.c
index 2da65a9c93f..5d29dcca523 100644
--- a/arch/powerpc/kernel/udbg_16550.c
+++ b/arch/powerpc/kernel/udbg_16550.c
@@ -144,7 +144,7 @@ unsigned int udbg_probe_uart_speed(void __iomem *comport, unsigned int clock)
 }
 
 #ifdef CONFIG_PPC_MAPLE
-void udbg_maple_real_putc(unsigned char c)
+void udbg_maple_real_putc(char c)
 {
 	if (udbg_comport) {
 		while ((real_readb(&udbg_comport->lsr) & LSR_THRE) == 0)