10 files changed, 208 insertions, 56 deletions

diff --git a/include/asm-powerpc/siginfo.h b/include/asm-powerpc/siginfo.h
index 538ea8ef509b..12f1bce037be 100644
--- a/include/asm-powerpc/siginfo.h
+++ b/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 */
diff --git a/include/asm-ppc/ptrace.h b/include/asm-ppc/ptrace.h
index 9d4e4ea530c3..7043c164b537 100644
--- a/include/asm-ppc/ptrace.h
+++ b/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
diff --git a/include/asm-ppc64/hvcall.h b/include/asm-ppc64/hvcall.h
index 4f668a4baff0..ab7c3cf24888 100644
--- a/include/asm-ppc64/hvcall.h
+++ b/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
diff --git a/include/asm-ppc64/machdep.h b/include/asm-ppc64/machdep.h
index 9a1ef4427ed2..8027160ec96d 100644
--- a/include/asm-ppc64/machdep.h
+++ b/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)
 {
diff --git a/include/asm-ppc64/pci-bridge.h b/include/asm-ppc64/pci-bridge.h
index 6b4a5b1f695e..d8991389ab39 100644
--- a/include/asm-ppc64/pci-bridge.h
+++ b/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__ */
diff --git a/include/asm-ppc64/plpar_wrappers.h b/include/asm-ppc64/plpar_wrappers.h
index f4a5fb7d67c7..72dd2449ee76 100644
--- a/include/asm-ppc64/plpar_wrappers.h
+++ b/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 */
diff --git a/include/asm-ppc64/processor.h b/include/asm-ppc64/processor.h
index 8bd7aa959385..4146189006e3 100644
--- a/include/asm-ppc64/processor.h
+++ b/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)));
diff --git a/include/asm-ppc64/ptrace-common.h b/include/asm-ppc64/ptrace-common.h
index af03547f9c7e..b1babb729673 100644
--- a/include/asm-ppc64/ptrace-common.h
+++ b/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 */
diff --git a/include/asm-ppc64/ptrace.h b/include/asm-ppc64/ptrace.h
index c96aad28fc08..3a55377f1fd3 100644
--- a/include/asm-ppc64/ptrace.h
+++ b/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.
  */
@@ -135,17 +138,21 @@ 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 */
+#define PT_FPSCR (PT_FPR0 + 32) /* each FP reg occupies 1 slot in 64-bit space */
 
 #ifdef __KERNEL__
-#define PT_FPSCR32 (PT_FPR0 + 2*32 + 1)   /* each FP reg occupies 2 32-bit userspace slots */
+#define PT_FPSCR32 (PT_FPR0 + 2*32 + 1) /* each FP reg occupies 2 32-bit userspace slots */
 #endif
 
 #define PT_VR0 82       /* each Vector reg occupies 2 slots in 64-bit */
@@ -173,17 +180,34 @@ extern unsigned long profile_pc(struct pt_regs *regs);
 #define PTRACE_GETVRREGS        18
 #define PTRACE_SETVRREGS        19
 
-/* 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. */
+/*
+ * 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 */
+
+/* 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 */
diff --git a/include/asm-ppc64/system.h b/include/asm-ppc64/system.h
index c0396428cc3c..375015c62f20 100644
--- a/include/asm-ppc64/system.h
+++ b/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);