Merge master.kernel.org:/pub/scm/linux/kernel/git/paulus/ppc64-2.6

arch/ppc64/kernel/pSeries_setup.c

@@ -590,6 +590,13 @@ static int pseries_shared_idle(void)
 	return 0;
 }
 
+static int pSeries_pci_probe_mode(struct pci_bus *bus)
+{
+	if (systemcfg->platform & PLATFORM_LPAR)
+		return PCI_PROBE_DEVTREE;
+	return PCI_PROBE_NORMAL;
+}
+
 struct machdep_calls __initdata pSeries_md = {
 	.probe			= pSeries_probe,
 	.setup_arch		= pSeries_setup_arch,
@@ -597,6 +604,7 @@ struct machdep_calls __initdata pSeries_md = {
 	.get_cpuinfo		= pSeries_get_cpuinfo,
 	.log_error		= pSeries_log_error,
 	.pcibios_fixup		= pSeries_final_fixup,
+	.pci_probe_mode		= pSeries_pci_probe_mode,
 	.irq_bus_setup		= pSeries_irq_bus_setup,
 	.restart		= rtas_restart,
 	.power_off		= rtas_power_off,

arch/ppc64/kernel/pSeries_smp.c

@@ -272,6 +272,7 @@ static inline int __devinit smp_startup_cpu(unsigned int lcpu)
 	unsigned long start_here = __pa((u32)*((unsigned long *)
 					       pSeries_secondary_smp_init));
 	unsigned int pcpu;
+	int start_cpu;
 
 	if (cpu_isset(lcpu, of_spin_map))
 		/* Already started by OF and sitting in spin loop */
@@ -282,12 +283,20 @@ static inline int __devinit smp_startup_cpu(unsigned int lcpu)
 	/* Fixup atomic count: it exited inside IRQ handler. */
 	paca[lcpu].__current->thread_info->preempt_count	= 0;
 
-	status = rtas_call(rtas_token("start-cpu"), 3, 1, NULL,
-			   pcpu, start_here, lcpu);
+	/* 
+	 * If the RTAS start-cpu token does not exist then presume the
+	 * cpu is already spinning.
+	 */
+	start_cpu = rtas_token("start-cpu");
+	if (start_cpu == RTAS_UNKNOWN_SERVICE)
+		return 1;
+
+	status = rtas_call(start_cpu, 3, 1, NULL, pcpu, start_here, lcpu);
 	if (status != 0) {
 		printk(KERN_ERR "start-cpu failed: %i\n", status);
 		return 0;
 	}
+
 	return 1;
 }
 

arch/ppc64/kernel/pmac_setup.c

@@ -477,6 +477,18 @@ static int __init pmac_probe(int platform)
 	return 1;
 }
 
+static int pmac_probe_mode(struct pci_bus *bus)
+{
+	struct device_node *node = bus->sysdata;
+
+	/* We need to use normal PCI probing for the AGP bus,
+	   since the device for the AGP bridge isn't in the tree. */
+	if (bus->self == NULL && device_is_compatible(node, "u3-agp"))
+		return PCI_PROBE_NORMAL;
+
+	return PCI_PROBE_DEVTREE;
+}
+
 struct machdep_calls __initdata pmac_md = {
 #ifdef CONFIG_HOTPLUG_CPU
 	.cpu_die		= generic_mach_cpu_die,
@@ -488,6 +500,7 @@ struct machdep_calls __initdata pmac_md = {
 	.init_IRQ		= pmac_init_IRQ,
 	.get_irq		= mpic_get_irq,
 	.pcibios_fixup		= pmac_pcibios_fixup,
+	.pci_probe_mode		= pmac_probe_mode,
 	.restart		= pmac_restart,
 	.power_off		= pmac_power_off,
 	.halt			= pmac_halt,

arch/ppc64/kernel/process.c

@@ -54,6 +54,7 @@
 #include <asm/sections.h>
 #include <asm/tlbflush.h>
 #include <asm/time.h>
+#include <asm/plpar_wrappers.h>
 
 #ifndef CONFIG_SMP
 struct task_struct *last_task_used_math = NULL;
@@ -163,7 +164,30 @@ int dump_task_altivec(struct pt_regs *regs, elf_vrregset_t *vrregs)
 
 #endif /* CONFIG_ALTIVEC */
 
+static void set_dabr_spr(unsigned long val)
+{
+	mtspr(SPRN_DABR, val);
+}
+
+int set_dabr(unsigned long dabr)
+{
+	int ret = 0;
+
+	if (firmware_has_feature(FW_FEATURE_XDABR)) {
+		/* We want to catch accesses from kernel and userspace */
+		unsigned long flags = H_DABRX_KERNEL|H_DABRX_USER;
+		ret = plpar_set_xdabr(dabr, flags);
+	} else if (firmware_has_feature(FW_FEATURE_DABR)) {
+		ret = plpar_set_dabr(dabr);
+	} else {
+		set_dabr_spr(dabr);
+	}
+
+	return ret;
+}
+
 DEFINE_PER_CPU(struct cpu_usage, cpu_usage_array);
+static DEFINE_PER_CPU(unsigned long, current_dabr);
 
 struct task_struct *__switch_to(struct task_struct *prev,
 				struct task_struct *new)
@@ -198,6 +222,11 @@ struct task_struct *__switch_to(struct task_struct *prev,
 		new->thread.regs->msr |= MSR_VEC;
 #endif /* CONFIG_ALTIVEC */
 
+	if (unlikely(__get_cpu_var(current_dabr) != new->thread.dabr)) {
+		set_dabr(new->thread.dabr);
+		__get_cpu_var(current_dabr) = new->thread.dabr;
+	}
+
 	flush_tlb_pending();
 
 	new_thread = &new->thread;
@@ -334,6 +363,11 @@ void flush_thread(void)
 		last_task_used_altivec = NULL;
 #endif /* CONFIG_ALTIVEC */
 #endif /* CONFIG_SMP */
+
+	if (current->thread.dabr) {
+		current->thread.dabr = 0;
+		set_dabr(0);
+	}
 }
 
 void

arch/ppc64/kernel/ptrace.c

@@ -17,6 +17,7 @@
  * this archive for more details.
  */
 
+#include <linux/config.h>
 #include <linux/kernel.h>
 #include <linux/sched.h>
 #include <linux/mm.h>
@@ -206,6 +207,19 @@ int sys_ptrace(long request, long pid, long addr, long data)
 		break;
 	}
 
+	case PTRACE_GET_DEBUGREG: {
+		ret = -EINVAL;
+		/* We only support one DABR and no IABRS at the moment */
+		if (addr > 0)
+			break;
+		ret = put_user(child->thread.dabr,
+			       (unsigned long __user *)data);
+		break;
+	}
+
+	case PTRACE_SET_DEBUGREG:
+		ret = ptrace_set_debugreg(child, addr, data);
+
 	case PTRACE_DETACH:
 		ret = ptrace_detach(child, data);
 		break;
@@ -274,6 +288,20 @@ int sys_ptrace(long request, long pid, long addr, long data)
 		break;
 	}
 
+#ifdef CONFIG_ALTIVEC
+	case PTRACE_GETVRREGS:
+		/* Get the child altivec register state. */
+		flush_altivec_to_thread(child);
+		ret = get_vrregs((unsigned long __user *)data, child);
+		break;
+
+	case PTRACE_SETVRREGS:
+		/* Set the child altivec register state. */
+		flush_altivec_to_thread(child);
+		ret = set_vrregs(child, (unsigned long __user *)data);
+		break;
+#endif
+
 	default:
 		ret = ptrace_request(child, request, addr, data);
 		break;

arch/ppc64/kernel/ptrace32.c

@@ -17,6 +17,7 @@
  * this archive for more details.
  */
 
+#include <linux/config.h>
 #include <linux/kernel.h>
 #include <linux/sched.h>
 #include <linux/mm.h>
@@ -337,6 +338,19 @@ int sys32_ptrace(long request, long pid, unsigned long addr, unsigned long data)
 		break;
 	}
 
+	case PTRACE_GET_DEBUGREG: {
+		ret = -EINVAL;
+		/* We only support one DABR and no IABRS at the moment */
+		if (addr > 0)
+			break;
+		ret = put_user(child->thread.dabr, (u32 __user *)data);
+		break;
+	}
+
+	case PTRACE_SET_DEBUGREG:
+		ret = ptrace_set_debugreg(child, addr, data);
+		break;
+
 	case PTRACE_DETACH:
 		ret = ptrace_detach(child, data);
 		break;
@@ -409,6 +423,20 @@ int sys32_ptrace(long request, long pid, unsigned long addr, unsigned long data)
 		ret = put_user(child->ptrace_message, (unsigned int __user *) data);
 		break;
 
+#ifdef CONFIG_ALTIVEC
+	case PTRACE_GETVRREGS:
+		/* Get the child altivec register state. */
+		flush_altivec_to_thread(child);
+		ret = get_vrregs((unsigned long __user *)data, child);
+		break;
+
+	case PTRACE_SETVRREGS:
+		/* Set the child altivec register state. */
+		flush_altivec_to_thread(child);
+		ret = set_vrregs(child, (unsigned long __user *)data);
+		break;
+#endif
+
 	default:
 		ret = ptrace_request(child, request, addr, data);
 		break;

arch/ppc64/kernel/ras.c

@@ -59,8 +59,6 @@ char mce_data_buf[RTAS_ERROR_LOG_MAX]
 /* This is true if we are using the firmware NMI handler (typically LPAR) */
 extern int fwnmi_active;
 
-extern void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr);
-
 static int ras_get_sensor_state_token;
 static int ras_check_exception_token;
 

arch/ppc64/kernel/setup.c

@@ -1064,8 +1064,6 @@ void __init setup_arch(char **cmdline_p)
 #define PPC64_LINUX_FUNCTION 0x0f000000
 #define PPC64_IPL_MESSAGE 0xc0000000
 #define PPC64_TERM_MESSAGE 0xb0000000
-#define PPC64_ATTN_MESSAGE 0xa0000000
-#define PPC64_DUMP_MESSAGE 0xd0000000
 
 static void ppc64_do_msg(unsigned int src, const char *msg)
 {
@@ -1093,20 +1091,6 @@ void ppc64_terminate_msg(unsigned int src, const char *msg)
 	printk("[terminate]%04x %s\n", src, msg);
 }
 
-/* Print something that needs attention (device error, etc) */
-void ppc64_attention_msg(unsigned int src, const char *msg)
-{
-	ppc64_do_msg(PPC64_LINUX_FUNCTION|PPC64_ATTN_MESSAGE|src, msg);
-	printk("[attention]%04x %s\n", src, msg);
-}
-
-/* Print a dump progress message. */
-void ppc64_dump_msg(unsigned int src, const char *msg)
-{
-	ppc64_do_msg(PPC64_LINUX_FUNCTION|PPC64_DUMP_MESSAGE|src, msg);
-	printk("[dump]%04x %s\n", src, msg);
-}
-
 /* This should only be called on processor 0 during calibrate decr */
 void __init setup_default_decr(void)
 {

arch/ppc64/kernel/signal.c

@@ -550,6 +550,15 @@ int do_signal(sigset_t *oldset, struct pt_regs *regs)
 		/* Whee!  Actually deliver the signal.  */
 		if (TRAP(regs) == 0x0C00)
 			syscall_restart(regs, &ka);
+
+		/*
+		 * Reenable the DABR before delivering the signal to
+		 * user space. The DABR will have been cleared if it
+		 * triggered inside the kernel.
+		 */
+		if (current->thread.dabr)
+			set_dabr(current->thread.dabr);
+
 		return handle_signal(signr, &ka, &info, oldset, regs);
 	}
 

arch/ppc64/kernel/signal32.c

@@ -970,6 +970,14 @@ int do_signal32(sigset_t *oldset, struct pt_regs *regs)
 		newsp = regs->gpr[1];
 	newsp &= ~0xfUL;
 
+	/*
+	 * Reenable the DABR before delivering the signal to
+	 * user space. The DABR will have been cleared if it
+	 * triggered inside the kernel.
+	 */
+	if (current->thread.dabr)
+		set_dabr(current->thread.dabr);
+
 	/* Whee!  Actually deliver the signal.  */
 	if (ka.sa.sa_flags & SA_SIGINFO)
 		ret = handle_rt_signal32(signr, &ka, &info, oldset, regs, newsp);

arch/ppc64/kernel/xics.c

@@ -38,7 +38,7 @@ static void xics_mask_and_ack_irq(unsigned int irq);
 static void xics_end_irq(unsigned int irq);
 static void xics_set_affinity(unsigned int irq_nr, cpumask_t cpumask);
 
-struct hw_interrupt_type xics_pic = {
+static struct hw_interrupt_type xics_pic = {
 	.typename = " XICS     ",
 	.startup = xics_startup,
 	.enable = xics_enable_irq,
@@ -48,7 +48,7 @@ struct hw_interrupt_type xics_pic = {
 	.set_affinity = xics_set_affinity
 };
 
-struct hw_interrupt_type xics_8259_pic = {
+static struct hw_interrupt_type xics_8259_pic = {
 	.typename = " XICS/8259",
 	.ack = xics_mask_and_ack_irq,
 };
@@ -89,9 +89,8 @@ static struct xics_ipl __iomem *xics_per_cpu[NR_CPUS];
 static int xics_irq_8259_cascade = 0;
 static int xics_irq_8259_cascade_real = 0;
 static unsigned int default_server = 0xFF;
-/* also referenced in smp.c... */
-unsigned int default_distrib_server = 0;
-unsigned int interrupt_server_size = 8;
+static unsigned int default_distrib_server = 0;
+static unsigned int interrupt_server_size = 8;
 
 /*
  * XICS only has a single IPI, so encode the messages per CPU
@@ -99,10 +98,10 @@ unsigned int interrupt_server_size = 8;
 struct xics_ipi_struct xics_ipi_message[NR_CPUS] __cacheline_aligned;
 
 /* RTAS service tokens */
-int ibm_get_xive;
-int ibm_set_xive;
-int ibm_int_on;
-int ibm_int_off;
+static int ibm_get_xive;
+static int ibm_set_xive;
+static int ibm_int_on;
+static int ibm_int_off;
 
 typedef struct {
 	int (*xirr_info_get)(int cpu);
@@ -284,16 +283,17 @@ static void xics_enable_irq(unsigned int virq)
 	call_status = rtas_call(ibm_set_xive, 3, 1, NULL, irq, server,
 				DEFAULT_PRIORITY);
 	if (call_status != 0) {
-		printk(KERN_ERR "xics_enable_irq: irq=%d: ibm_set_xive "
-		       "returned %x\n", irq, call_status);
+		printk(KERN_ERR "xics_enable_irq: irq=%u: ibm_set_xive "
+		       "returned %d\n", irq, call_status);
+		printk("set_xive %x, server %x\n", ibm_set_xive, server);
 		return;
 	}
 
 	/* Now unmask the interrupt (often a no-op) */
 	call_status = rtas_call(ibm_int_on, 1, 1, NULL, irq);
 	if (call_status != 0) {
-		printk(KERN_ERR "xics_enable_irq: irq=%d: ibm_int_on "
-		       "returned %x\n", irq, call_status);
+		printk(KERN_ERR "xics_enable_irq: irq=%u: ibm_int_on "
+		       "returned %d\n", irq, call_status);
 		return;
 	}
 }
@@ -308,8 +308,8 @@ static void xics_disable_real_irq(unsigned int irq)
 
 	call_status = rtas_call(ibm_int_off, 1, 1, NULL, irq);
 	if (call_status != 0) {
-		printk(KERN_ERR "xics_disable_real_irq: irq=%d: "
-		       "ibm_int_off returned %x\n", irq, call_status);
+		printk(KERN_ERR "xics_disable_real_irq: irq=%u: "
+		       "ibm_int_off returned %d\n", irq, call_status);
 		return;
 	}
 
@@ -317,8 +317,8 @@ static void xics_disable_real_irq(unsigned int irq)
 	/* Have to set XIVE to 0xff to be able to remove a slot */
 	call_status = rtas_call(ibm_set_xive, 3, 1, NULL, irq, server, 0xff);
 	if (call_status != 0) {
-		printk(KERN_ERR "xics_disable_irq: irq=%d: ibm_set_xive(0xff)"
-		       " returned %x\n", irq, call_status);
+		printk(KERN_ERR "xics_disable_irq: irq=%u: ibm_set_xive(0xff)"
+		       " returned %d\n", irq, call_status);
 		return;
 	}
 }
@@ -380,7 +380,7 @@ int xics_get_irq(struct pt_regs *regs)
 		if (irq == NO_IRQ)
 			irq = real_irq_to_virt_slowpath(vec);
 		if (irq == NO_IRQ) {
-			printk(KERN_ERR "Interrupt %d (real) is invalid,"
+			printk(KERN_ERR "Interrupt %u (real) is invalid,"
 			       " disabling it.\n", vec);
 			xics_disable_real_irq(vec);
 		} else
@@ -622,7 +622,7 @@ static void xics_set_affinity(unsigned int virq, cpumask_t cpumask)
 	status = rtas_call(ibm_get_xive, 1, 3, xics_status, irq);
 
 	if (status) {
-		printk(KERN_ERR "xics_set_affinity: irq=%d ibm,get-xive "
+		printk(KERN_ERR "xics_set_affinity: irq=%u ibm,get-xive "
 		       "returns %d\n", irq, status);
 		return;
 	}
@@ -641,7 +641,7 @@ static void xics_set_affinity(unsigned int virq, cpumask_t cpumask)
 				irq, newmask, xics_status[1]);
 
 	if (status) {
-		printk(KERN_ERR "xics_set_affinity: irq=%d ibm,set-xive "
+		printk(KERN_ERR "xics_set_affinity: irq=%u ibm,set-xive "
 		       "returns %d\n", irq, status);
 		return;
 	}
@@ -720,7 +720,7 @@ void xics_migrate_irqs_away(void)
 
 		status = rtas_call(ibm_get_xive, 1, 3, xics_status, irq);
 		if (status) {
-			printk(KERN_ERR "migrate_irqs_away: irq=%d "
+			printk(KERN_ERR "migrate_irqs_away: irq=%u "
 					"ibm,get-xive returns %d\n",
 					virq, status);
 			goto unlock;
@@ -734,7 +734,7 @@ void xics_migrate_irqs_away(void)
 		if (xics_status[0] != get_hard_smp_processor_id(cpu))
 			goto unlock;
 
-		printk(KERN_WARNING "IRQ %d affinity broken off cpu %u\n",
+		printk(KERN_WARNING "IRQ %u affinity broken off cpu %u\n",
 		       virq, cpu);
 
 		/* Reset affinity to all cpus */

arch/ppc64/mm/fault.c

@@ -77,6 +77,28 @@ static int store_updates_sp(struct pt_regs *regs)
 	return 0;
 }
 
+static void do_dabr(struct pt_regs *regs, unsigned long error_code)
+{
+	siginfo_t info;
+
+	if (notify_die(DIE_DABR_MATCH, "dabr_match", regs, error_code,
+			11, SIGSEGV) == NOTIFY_STOP)
+		return;
+
+	if (debugger_dabr_match(regs))
+		return;
+
+	/* Clear the DABR */
+	set_dabr(0);
+
+	/* Deliver the signal to userspace */
+	info.si_signo = SIGTRAP;
+	info.si_errno = 0;
+	info.si_code = TRAP_HWBKPT;
+	info.si_addr = (void __user *)regs->nip;
+	force_sig_info(SIGTRAP, &info, current);
+}
+
 /*
  * The error_code parameter is
  *  - DSISR for a non-SLB data access fault,
@@ -112,10 +134,7 @@ int __kprobes do_page_fault(struct pt_regs *regs, unsigned long address,
 		return SIGSEGV;
 
   	if (error_code & DSISR_DABRMATCH) {
-		if (notify_die(DIE_DABR_MATCH, "dabr_match", regs, error_code,
-					11, SIGSEGV) == NOTIFY_STOP)
-			return 0;
-		if (debugger_dabr_match(regs))
+		do_dabr(regs, error_code);
 		return 0;
 	}
 

arch/ppc64/xmon/privinst.h

@@ -46,7 +46,6 @@ GSETSPR(287, pvr)
 GSETSPR(1008, hid0)
 GSETSPR(1009, hid1)
 GSETSPR(1010, iabr)
-GSETSPR(1013, dabr)
 GSETSPR(1023, pir)
 
 static inline void store_inst(void *p)

arch/ppc64/xmon/xmon.c

@@ -586,6 +586,8 @@ int xmon_dabr_match(struct pt_regs *regs)
 {
 	if ((regs->msr & (MSR_IR|MSR_PR|MSR_SF)) != (MSR_IR|MSR_SF))
 		return 0;
+	if (dabr.enabled == 0)
+		return 0;
 	xmon_core(regs, 0);
 	return 1;
 }
@@ -628,20 +630,6 @@ int xmon_fault_handler(struct pt_regs *regs)
 	return 0;
 }
 
-/* On systems with a hypervisor, we can't set the DABR
-   (data address breakpoint register) directly. */
-static void set_controlled_dabr(unsigned long val)
-{
-#ifdef CONFIG_PPC_PSERIES
-	if (systemcfg->platform == PLATFORM_PSERIES_LPAR) {
-		int rc = plpar_hcall_norets(H_SET_DABR, val);
-		if (rc != H_Success)
-			xmon_printf("Warning: setting DABR failed (%d)\n", rc);
-	} else
-#endif
-		set_dabr(val);
-}
-
 static struct bpt *at_breakpoint(unsigned long pc)
 {
 	int i;
@@ -728,7 +716,7 @@ static void insert_bpts(void)
 static void insert_cpu_bpts(void)
 {
 	if (dabr.enabled)
-		set_controlled_dabr(dabr.address | (dabr.enabled & 7));
+		set_dabr(dabr.address | (dabr.enabled & 7));
 	if (iabr && cpu_has_feature(CPU_FTR_IABR))
 		set_iabr(iabr->address
 			 | (iabr->enabled & (BP_IABR|BP_IABR_TE)));
@@ -756,7 +744,7 @@ static void remove_bpts(void)
 
 static void remove_cpu_bpts(void)
 {
-	set_controlled_dabr(0);
+	set_dabr(0);
 	if (cpu_has_feature(CPU_FTR_IABR))
 		set_iabr(0);
 }

include/asm-powerpc/siginfo.h

@@ -15,4 +15,12 @@
 
 #include <asm-generic/siginfo.h>
 
+/*
+ * SIGTRAP si_codes
+ */
+#define TRAP_BRANCH	(__SI_FAULT|3)	/* process taken branch trap */
+#define TRAP_HWBKPT	(__SI_FAULT|4)	/* hardware breakpoint or watchpoint */
+#undef NSIGTRAP
+#define NSIGTRAP	4
+
 #endif	/* _ASM_POWERPC_SIGINFO_H */

include/asm-ppc/ptrace.h

@@ -142,4 +142,11 @@ do {									      \
 #define PTRACE_GETEVRREGS	20
 #define PTRACE_SETEVRREGS	21
 
+/*
+ * Get or set a debug register. The first 16 are DABR registers and the
+ * second 16 are IABR registers.
+ */
+#define PTRACE_GET_DEBUGREG	25
+#define PTRACE_SET_DEBUGREG	26
+
 #endif

include/asm-ppc64/hvcall.h

@@ -56,6 +56,11 @@
 #define H_PP1			(1UL<<(63-62))
 #define H_PP2			(1UL<<(63-63))
 
+/* DABRX flags */
+#define H_DABRX_HYPERVISOR	(1UL<<(63-61))
+#define H_DABRX_KERNEL		(1UL<<(63-62))
+#define H_DABRX_USER		(1UL<<(63-63))
+
 /* pSeries hypervisor opcodes */
 #define H_REMOVE		0x04
 #define H_ENTER			0x08
@@ -101,6 +106,7 @@
 #define H_VIO_SIGNAL		0x104
 #define H_SEND_CRQ		0x108
 #define H_COPY_RDMA             0x110
+#define H_SET_XDABR		0x134
 #define H_STUFF_TCE		0x138
 #define H_PUT_TCE_INDIRECT	0x13C
 #define H_VTERM_PARTNER_INFO	0x150

include/asm-ppc64/machdep.h

@@ -88,6 +88,7 @@ struct machdep_calls {
 
 	/* PCI stuff */
 	void		(*pcibios_fixup)(void);
+	int		(*pci_probe_mode)(struct pci_bus *);
 
 	void		(*restart)(char *cmd);
 	void		(*power_off)(void);
@@ -173,10 +174,6 @@ extern sys_ctrler_t sys_ctrler;
 void ppc64_boot_msg(unsigned int src, const char *msg);
 /* Print a termination message (print only -- does not stop the kernel) */
 void ppc64_terminate_msg(unsigned int src, const char *msg);
-/* Print something that needs attention (device error, etc) */
-void ppc64_attention_msg(unsigned int src, const char *msg);
-/* Print a dump progress message. */
-void ppc64_dump_msg(unsigned int src, const char *msg);
 
 static inline void log_error(char *buf, unsigned int err_type, int fatal)
 {

include/asm-ppc64/pci-bridge.h

@@ -119,5 +119,10 @@ static inline struct pci_controller *pci_bus_to_host(struct pci_bus *bus)
 	return PCI_DN(busdn)->phb;
 }
 
+/* Return values for ppc_md.pci_probe_mode function */
+#define PCI_PROBE_NONE		-1	/* Don't look at this bus at all */
+#define PCI_PROBE_NORMAL	0	/* Do normal PCI probing */
+#define PCI_PROBE_DEVTREE	1	/* Instantiate from device tree */
+
 #endif
 #endif /* __KERNEL__ */

include/asm-ppc64/plpar_wrappers.h

@@ -107,5 +107,14 @@ static inline long plpar_put_term_char(unsigned long termno,
 				  lbuf[1]);
 }
 
+static inline long plpar_set_xdabr(unsigned long address, unsigned long flags)
+{
+	return plpar_hcall_norets(H_SET_XDABR, address, flags);
+}
+
+static inline long plpar_set_dabr(unsigned long val)
+{
+	return plpar_hcall_norets(H_SET_DABR, val);
+}
 
 #endif /* _PPC64_PLPAR_WRAPPERS_H */

include/asm-ppc64/processor.h

@@ -433,6 +433,7 @@ struct thread_struct {
 	unsigned long	start_tb;	/* Start purr when proc switched in */
 	unsigned long	accum_tb;	/* Total accumilated purr for process */
 	unsigned long	vdso_base;	/* base of the vDSO library */
+	unsigned long	dabr;		/* Data address breakpoint register */
 #ifdef CONFIG_ALTIVEC
 	/* Complete AltiVec register set */
 	vector128	vr[32] __attribute((aligned(16)));

include/asm-ppc64/ptrace-common.h

@@ -11,6 +11,10 @@
 
 #ifndef _PPC64_PTRACE_COMMON_H
 #define _PPC64_PTRACE_COMMON_H
+
+#include <linux/config.h>
+#include <asm/system.h>
+
 /*
  * Set of msr bits that gdb can change on behalf of a process.
  */
@@ -69,4 +73,92 @@ static inline void clear_single_step(struct task_struct *task)
 	clear_ti_thread_flag(task->thread_info, TIF_SINGLESTEP);
 }
 
+#ifdef CONFIG_ALTIVEC
+/*
+ * Get/set all the altivec registers vr0..vr31, vscr, vrsave, in one go.
+ * The transfer totals 34 quadword.  Quadwords 0-31 contain the
+ * corresponding vector registers.  Quadword 32 contains the vscr as the
+ * last word (offset 12) within that quadword.  Quadword 33 contains the
+ * vrsave as the first word (offset 0) within the quadword.
+ *
+ * This definition of the VMX state is compatible with the current PPC32
+ * ptrace interface.  This allows signal handling and ptrace to use the
+ * same structures.  This also simplifies the implementation of a bi-arch
+ * (combined (32- and 64-bit) gdb.
+ */
+
+/*
+ * Get contents of AltiVec register state in task TASK
+ */
+static inline int get_vrregs(unsigned long __user *data,
+			     struct task_struct *task)
+{
+	unsigned long regsize;
+
+	/* copy AltiVec registers VR[0] .. VR[31] */
+	regsize = 32 * sizeof(vector128);
+	if (copy_to_user(data, task->thread.vr, regsize))
+		return -EFAULT;
+	data += (regsize / sizeof(unsigned long));
+
+	/* copy VSCR */
+	regsize = 1 * sizeof(vector128);
+	if (copy_to_user(data, &task->thread.vscr, regsize))
+		return -EFAULT;
+	data += (regsize / sizeof(unsigned long));
+
+	/* copy VRSAVE */
+	if (put_user(task->thread.vrsave, (u32 __user *)data))
+		return -EFAULT;
+
+	return 0;
+}
+
+/*
+ * Write contents of AltiVec register state into task TASK.
+ */
+static inline int set_vrregs(struct task_struct *task,
+			     unsigned long __user *data)
+{
+	unsigned long regsize;
+
+	/* copy AltiVec registers VR[0] .. VR[31] */
+	regsize = 32 * sizeof(vector128);
+	if (copy_from_user(task->thread.vr, data, regsize))
+		return -EFAULT;
+	data += (regsize / sizeof(unsigned long));
+
+	/* copy VSCR */
+	regsize = 1 * sizeof(vector128);
+	if (copy_from_user(&task->thread.vscr, data, regsize))
+		return -EFAULT;
+	data += (regsize / sizeof(unsigned long));
+
+	/* copy VRSAVE */
+	if (get_user(task->thread.vrsave, (u32 __user *)data))
+		return -EFAULT;
+
+	return 0;
+}
+#endif
+
+static inline int ptrace_set_debugreg(struct task_struct *task,
+				      unsigned long addr, unsigned long data)
+{
+	/* We only support one DABR and no IABRS at the moment */
+	if (addr > 0)
+		return -EINVAL;
+
+	/* The bottom 3 bits are flags */
+	if ((data & ~0x7UL) >= TASK_SIZE)
+		return -EIO;
+
+	/* Ensure translation is on */
+	if (data && !(data & DABR_TRANSLATION))
+		return -EIO;
+
+	task->thread.dabr = data;
+	return 0;
+}
+
 #endif /* _PPC64_PTRACE_COMMON_H */

include/asm-ppc64/ptrace.h

@@ -25,56 +25,49 @@
  */
 
 #ifndef __ASSEMBLY__
-#define PPC_REG unsigned long
+
 struct pt_regs {
-	PPC_REG gpr[32];
-	PPC_REG nip;
-	PPC_REG msr;
-	PPC_REG orig_gpr3;	/* Used for restarting system calls */
-	PPC_REG ctr;
-	PPC_REG link;
-	PPC_REG xer;
-	PPC_REG ccr;
-	PPC_REG softe;		/* Soft enabled/disabled */
-	PPC_REG trap;		/* Reason for being here */
-	PPC_REG dar;		/* Fault registers */
-	PPC_REG dsisr;
-	PPC_REG result; 	/* Result of a system call */
+	unsigned long gpr[32];
+	unsigned long nip;
+	unsigned long msr;
+	unsigned long orig_gpr3; /* Used for restarting system calls */
+	unsigned long ctr;
+	unsigned long link;
+	unsigned long xer;
+	unsigned long ccr;
+	unsigned long softe;	/* Soft enabled/disabled */
+	unsigned long trap;	/* Reason for being here */
+	unsigned long dar;	/* Fault registers */
+	unsigned long dsisr;
+	unsigned long result;	/* Result of a system call */
 };
 
-#define PPC_REG_32 unsigned int
 struct pt_regs32 {
-	PPC_REG_32 gpr[32];
-	PPC_REG_32 nip;
-	PPC_REG_32 msr;
-	PPC_REG_32 orig_gpr3;	/* Used for restarting system calls */
-	PPC_REG_32 ctr;
-	PPC_REG_32 link;
-	PPC_REG_32 xer;
-	PPC_REG_32 ccr;
-	PPC_REG_32 mq;		/* 601 only (not used at present) */
-				/* Used on APUS to hold IPL value. */
-	PPC_REG_32 trap;		/* Reason for being here */
-	PPC_REG_32 dar;		/* Fault registers */
-	PPC_REG_32 dsisr;
-	PPC_REG_32 result; 	/* Result of a system call */
+	unsigned int gpr[32];
+	unsigned int nip;
+	unsigned int msr;
+	unsigned int orig_gpr3;	/* Used for restarting system calls */
+	unsigned int ctr;
+	unsigned int link;
+	unsigned int xer;
+	unsigned int ccr;
+	unsigned int mq;	/* 601 only (not used at present) */
+	unsigned int trap;	/* Reason for being here */
+	unsigned int dar;	/* Fault registers */
+	unsigned int dsisr;
+	unsigned int result;	/* Result of a system call */
 };
 
+#ifdef __KERNEL__
+
 #define instruction_pointer(regs) ((regs)->nip)
+
 #ifdef CONFIG_SMP
 extern unsigned long profile_pc(struct pt_regs *regs);
 #else
 #define profile_pc(regs) instruction_pointer(regs)
 #endif
 
-#endif /* __ASSEMBLY__ */
-
-#define STACK_FRAME_OVERHEAD	112	/* size of minimum stack frame */
-
-/* Size of dummy stack frame allocated when calling signal handler. */
-#define __SIGNAL_FRAMESIZE	128
-#define __SIGNAL_FRAMESIZE32	64
-
 #define user_mode(regs) ((((regs)->msr) >> MSR_PR_LG) & 0x1)
 
 #define force_successful_syscall_return()   \
@@ -89,6 +82,16 @@ extern unsigned long profile_pc(struct pt_regs *regs);
 #define TRAP(regs)		((regs)->trap & ~0xF)
 #define CHECK_FULL_REGS(regs)	BUG_ON(regs->trap & 1)
 
+#endif /* __KERNEL__ */
+
+#endif /* __ASSEMBLY__ */
+
+#define STACK_FRAME_OVERHEAD	112	/* size of minimum stack frame */
+
+/* Size of dummy stack frame allocated when calling signal handler. */
+#define __SIGNAL_FRAMESIZE	128
+#define __SIGNAL_FRAMESIZE32	64
+
 /*
  * Offsets used by 'ptrace' system call interface.
  */
@@ -135,12 +138,16 @@ extern unsigned long profile_pc(struct pt_regs *regs);
 #define PT_XER	37
 #define PT_CCR	38
 #define PT_SOFTE 39
+#define PT_TRAP	40
+#define PT_DAR	41
+#define PT_DSISR 42
 #define PT_RESULT 43
 
 #define PT_FPR0	48
 
-/* Kernel and userspace will both use this PT_FPSCR value.  32-bit apps will have
- * visibility to the asm-ppc/ptrace.h header instead of this one.
+/*
+ * Kernel and userspace will both use this PT_FPSCR value.  32-bit apps will
+ * have visibility to the asm-ppc/ptrace.h header instead of this one.
  */
 #define PT_FPSCR (PT_FPR0 + 32)	/* each FP reg occupies 1 slot in 64-bit space */
 
@@ -173,17 +180,34 @@ extern unsigned long profile_pc(struct pt_regs *regs);
 #define PTRACE_GETVRREGS	18
 #define PTRACE_SETVRREGS	19
 
+/*
+ * While we dont have 64bit book E processors, we need to reserve the
+ * relevant ptrace calls for 32bit compatibility.
+ */
+#if 0
+#define PTRACE_GETEVRREGS       20
+#define PTRACE_SETEVRREGS       21
+#endif
+
+/*
+ * Get or set a debug register. The first 16 are DABR registers and the
+ * second 16 are IABR registers.
+ */
+#define PTRACE_GET_DEBUGREG	25
+#define PTRACE_SET_DEBUGREG	26
+
 /* Additional PTRACE requests implemented on PowerPC. */
 #define PPC_PTRACE_GETREGS	0x99	/* Get GPRs 0 - 31 */
 #define PPC_PTRACE_SETREGS	0x98	/* Set GPRs 0 - 31 */
 #define PPC_PTRACE_GETFPREGS	0x97	/* Get FPRs 0 - 31 */
 #define PPC_PTRACE_SETFPREGS	0x96	/* Set FPRs 0 - 31 */
-#define PPC_PTRACE_PEEKTEXT_3264  0x95  /* Read word at location ADDR on a 64-bit process from a 32-bit process. */
-#define PPC_PTRACE_PEEKDATA_3264  0x94  /* Read word at location ADDR on a 64-bit process from a 32-bit process. */
-#define PPC_PTRACE_POKETEXT_3264  0x93  /* Write word at location ADDR on a 64-bit process from a 32-bit process. */
-#define PPC_PTRACE_POKEDATA_3264  0x92  /* Write word at location ADDR on a 64-bit process from a 32-bit process. */
-#define PPC_PTRACE_PEEKUSR_3264   0x91  /* Read a register (specified by ADDR) out of the "user area" on a 64-bit process from a 32-bit process. */
-#define PPC_PTRACE_POKEUSR_3264   0x90  /* Write DATA into location ADDR within the "user area" on a 64-bit process from a 32-bit process. */
 
+/* Calls to trace a 64bit program from a 32bit program */
+#define PPC_PTRACE_PEEKTEXT_3264 0x95
+#define PPC_PTRACE_PEEKDATA_3264 0x94
+#define PPC_PTRACE_POKETEXT_3264 0x93
+#define PPC_PTRACE_POKEDATA_3264 0x92
+#define PPC_PTRACE_PEEKUSR_3264  0x91
+#define PPC_PTRACE_POKEUSR_3264  0x90
 
 #endif /* _PPC64_PTRACE_H */

include/asm-ppc64/system.h

@@ -101,6 +101,9 @@ static inline int debugger_dabr_match(struct pt_regs *regs) { return 0; }
 static inline int debugger_fault_handler(struct pt_regs *regs) { return 0; }
 #endif
 
+extern int set_dabr(unsigned long dabr);
+extern void _exception(int signr, struct pt_regs *regs, int code,
+		       unsigned long addr);
 extern int fix_alignment(struct pt_regs *regs);
 extern void bad_page_fault(struct pt_regs *regs, unsigned long address,
 			   int sig);