powerpc/booke: Add definitions for advanced debug registers

powerpc/booke: Add definitions for advanced debug registers

From: Dave Kleikamp <shaggy@linux.vnet.ibm.com>

Based on patches originally written by Torez Smith.

This patch adds additional definitions for BookE Debug Registers
to the reg_booke.h header file.

Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Acked-by: David Gibson <dwg@au1.ibm.com>
Cc: Torez Smith  <lnxtorez@linux.vnet.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: Sergio Durigan Junior <sergiodj@br.ibm.com>
Cc: Thiago Jung Bauermann <bauerman@br.ibm.com>
Cc: linuxppc-dev list <Linuxppc-dev@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 34 insertions, 2 deletions

diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h
index 9eed29eee604..221ba6240464 100644
--- a/arch/powerpc/include/asm/processor.h
+++ b/arch/powerpc/include/asm/processor.h
@@ -161,9 +161,41 @@ struct thread_struct {
 #ifdef CONFIG_PPC32
         void            *pgdir;         /* root of page-table tree */
 #endif
-#if defined(CONFIG_4xx) || defined (CONFIG_BOOKE)
-        unsigned long   dbcr0;          /* debug control register values */
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
+        /*
+         * The following help to manage the use of Debug Control Registers
+         * om the BookE platforms.
+         */
+        unsigned long   dbcr0;
         unsigned long   dbcr1;
+#ifdef CONFIG_BOOKE
+        unsigned long   dbcr2;
+#endif
+        /*
+         * The stored value of the DBSR register will be the value at the
+         * last debug interrupt. This register can only be read from the
+         * user (will never be written to) and has value while helping to
+         * describe the reason for the last debug trap.  Torez
+         */
+        unsigned long   dbsr;
+        /*
+         * The following will contain addresses used by debug applications
+         * to help trace and trap on particular address locations.
+         * The bits in the Debug Control Registers above help define which
+         * of the following registers will contain valid data and/or addresses.
+         */
+        unsigned long   iac1;
+        unsigned long   iac2;
+#if CONFIG_PPC_ADV_DEBUG_IACS > 2
+        unsigned long   iac3;
+        unsigned long   iac4;
+#endif
+        unsigned long   dac1;
+        unsigned long   dac2;
+#if CONFIG_PPC_ADV_DEBUG_DVCS > 0
+        unsigned long   dvc1;
+        unsigned long   dvc2;
+#endif
 #endif
         /* FP and VSX 0-31 register set */
         double          fpr[32][TS_FPRWIDTH];