[PARISC] Make sure use of RFI conforms to PA 2.0 and 1.1 arch docs

2.6.12-rc4-pa3 : first pass at making sure use of RFI conforms to
PA 2.0 arch pages F-4 and F-5, PA 1.1 Arch page 3-19 and 3-20.

The discussion revolves around all the rules for clearing PSW Q-bit.
The hard part is meeting all the rules for "relied upon translation".

.align directive is used to guarantee the critical sequence ends more than
8 instructions (32 bytes) from the end of page.

Signed-off-by: Grant Grundler <grundler@parisc-linux.org>

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>

1 files changed, 26 insertions, 25 deletions

diff --git a/include/asm-parisc/psw.h b/include/asm-parisc/psw.h
index 51323029f377..4334d6ca2add 100644
--- a/include/asm-parisc/psw.h
+++ b/include/asm-parisc/psw.h
@@ -1,4 +1,7 @@
 #ifndef _PARISC_PSW_H
+
+#include <linux/config.h>
+
 #define PSW_I   0x00000001
 #define PSW_D   0x00000002
 #define PSW_P   0x00000004
@@ -9,6 +12,16 @@
 #define PSW_G   0x00000040      /* PA1.x only */
 #define PSW_O   0x00000080      /* PA2.0 only */
 
+/* ssm/rsm instructions number PSW_W and PSW_E differently */
+#define PSW_SM_I        PSW_I   /* Enable External Interrupts */
+#define PSW_SM_D        PSW_D
+#define PSW_SM_P        PSW_P
+#define PSW_SM_Q        PSW_Q   /* Enable Interrupt State Collection */
+#define PSW_SM_R        PSW_R   /* Enable Recover Counter Trap */
+#define PSW_SM_W        0x200   /* PA2.0 only : Enable Wide Mode */
+
+#define PSW_SM_QUIET    PSW_SM_R+PSW_SM_Q+PSW_SM_P+PSW_SM_D+PSW_SM_I
+
 #define PSW_CB  0x0000ff00
 
 #define PSW_M   0x00010000
@@ -30,33 +43,21 @@
 #define PSW_Z   0x40000000      /* PA1.x only */
 #define PSW_Y   0x80000000      /* PA1.x only */
 
-#ifdef __LP64__
-#define PSW_HI_CB 0x000000ff    /* PA2.0 only */
+#ifdef CONFIG_64BIT
+#  define PSW_HI_CB 0x000000ff    /* PA2.0 only */
 #endif
 
-/* PSW bits to be used with ssm/rsm */
-#define PSW_SM_I        0x1
-#define PSW_SM_D        0x2
-#define PSW_SM_P        0x4
-#define PSW_SM_Q        0x8
-#define PSW_SM_R        0x10
-#define PSW_SM_F        0x20
-#define PSW_SM_G        0x40
-#define PSW_SM_O        0x80
-#define PSW_SM_E        0x100
-#define PSW_SM_W        0x200
-
-#ifdef __LP64__
-#  define USER_PSW      (PSW_C | PSW_Q | PSW_P | PSW_D | PSW_I)
-#  define KERNEL_PSW    (PSW_W | PSW_C | PSW_Q | PSW_P | PSW_D)
-#  define REAL_MODE_PSW (PSW_W | PSW_Q)
-#  define USER_PSW_MASK (PSW_W | PSW_T | PSW_N | PSW_X | PSW_B | PSW_V | PSW_CB)
-#  define USER_PSW_HI_MASK (PSW_HI_CB)
-#else
-#  define USER_PSW      (PSW_C | PSW_Q | PSW_P | PSW_D | PSW_I)
-#  define KERNEL_PSW    (PSW_C | PSW_Q | PSW_P | PSW_D)
-#  define REAL_MODE_PSW (PSW_Q)
-#  define USER_PSW_MASK (PSW_T | PSW_N | PSW_X | PSW_B | PSW_V | PSW_CB)
+#ifdef CONFIG_64BIT
+#  define USER_PSW_HI_MASK      PSW_HI_CB
+#  define WIDE_PSW              PSW_W
+#else 
+#  define WIDE_PSW              0
 #endif
 
+/* Used when setting up for rfi */
+#define KERNEL_PSW    (WIDE_PSW | PSW_C | PSW_Q | PSW_P | PSW_D)
+#define REAL_MODE_PSW (WIDE_PSW | PSW_Q)
+#define USER_PSW_MASK (WIDE_PSW | PSW_T | PSW_N | PSW_X | PSW_B | PSW_V | PSW_CB)
+#define USER_PSW      (PSW_C | PSW_Q | PSW_P | PSW_D | PSW_I)
+
 #endif