[src/trunk]: src/sys/arch/sparc/dev some register bits are defined differentl...

[macallan <macallan%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/e56f98983f2f
branches:  trunk
changeset: 449096:e56f98983f2f
user:      macallan <macallan%NetBSD.org@localhost>
date:      Fri Feb 22 23:01:25 2019 +0000

description:
some register bits are defined differently by SunOS's sxreg.h and the SPAM
manual, upon investigation the hardware appears to agree with the SunOS header,
so adapt accordingly

diffstat:

 sys/arch/sparc/dev/sxreg.h |  51 ++++++++++++++++++++++++++++++++++++++++++++-
 1 files changed, 49 insertions(+), 2 deletions(-)

diffs (89 lines):

diff -r f71cf09c6eb2 -r e56f98983f2f sys/arch/sparc/dev/sxreg.h
--- a/sys/arch/sparc/dev/sxreg.h        Fri Feb 22 22:25:22 2019 +0000
+++ b/sys/arch/sparc/dev/sxreg.h        Fri Feb 22 23:01:25 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: sxreg.h,v 1.16 2017/12/08 22:28:54 macallan Exp $      */
+/*     $NetBSD: sxreg.h,v 1.17 2019/02/22 23:01:25 macallan Exp $      */
 
 /*-
  * Copyright (c) 2013 The NetBSD Foundation, Inc.
@@ -47,6 +47,8 @@
 #define SX_ID                  0x00000028
 #define SX_R0_INIT             0x0000002c
 #define SX_SOFTRESET           0x00000030
+#define SX_SYNC                        0x00000034      /* write will stall CPU until */
+                                               /* SX is idle                 */
 /* write registers directly, only when processor is stopped */
 #define SX_DIRECT_R0           0x00000100
 #define SX_DIRECT_R1           0x00000104      /* and so on until R127 */
@@ -73,10 +75,39 @@
 #define SX_EE5         0x00000010      /* alignment violation */
 #define SX_EE6         0x00000020      /* illegal instruction queue write */
 #define SX_EI          0x00000080      /* interrupt on error */
+/*
+ * XXX
+ * the following bit definitions are from the SX manual. They're defined in a
+ * different way in SunOS's sxreg.h, the hardware seems to follow the latter.
+ */
+#if 0
 #define SX_PB          0x00001000      /* enable page bound checking */
 #define SX_WO          0x00002000      /* write occured ( by SX ) */
 #define SX_GO          0x00004000      /* start/stop the processor */
 #define SX_MT          0x00008000      /* instruction queue is empty */
+#endif
+
+#define SX_PB          0x00000400      /* enable page bound checking */
+#define SX_WO          0x00000800      /* write occured ( by SX ) */
+#define SX_GO          0x00001000      /* start/stop the processor */
+#define SX_JB          0x00002000      /* Jammed/Busy specifies the type of events */
+                                       /* which increment the SX timer */
+#define SX_MT          0x00004000      /* instruction queue is empty */
+#define SX_BZ          0x00008000      /* Busy bit. When set it indicates that SX */
+                                       /* is processing an instruction or an */
+                                       /* instruction is pending in the Q      */
+#define SX_B0MOD       0x00010000      /* When set by SX it indicates that a write */
+                                       /* to bank zero of the SX registers (0-31) */
+                                       /* occured */
+#define SX_B1MOD       0x00020000      /* When set by SX it indicates that a write */
+                                       /* to bank 1 of the SX registers (32-63) */
+                                       /* occured */
+#define SX_B2MOD       0x00040000      /* When set by SX it indicates that a write */
+                                       /* to bank 2 of the SX registers (64-95) */
+                                       /* occured */
+#define SX_B3MOD       0x00080000      /* When set by SX it indicates that a write */
+                                       /* to bank 3 of the SX registers (96-127) */
+                                       /* occured */
 
 /* SX_ERROR */
 #define SX_SE1         0x00000001      /* illegal instruction */
@@ -87,13 +118,29 @@
 #define SX_SE6         0x00000020      /* illegal instruction queue write */
 #define SX_SI          0x00000080      /* interrupt on error */
 
-/* SX_ID */
+/* SX_ID from the manual */
+#if 0
 #define SX_ARCHITECTURE_MASK   0x000000ff
 #define SX_CHIP_REVISION       0x0000ff00
+#endif
+
+#define SX_ARCHITECTURE_MASK   0x00000003
+#define SX_CHIP_REVISION       0x000000f8
 
 /* SX_DIAGNOSTICS */
 #define SX_IQ_FIFO_ACCESS      0x00000001      /* allow memory instructions
                                                 * in SX_INSTRUCTIONS */
+#define SX_SERIAL_INSTRUCTIONS 0x00000002      /* force inst. serializing */
+#define SX_RAM_PAGE_CROSS      0x00000004      /* indicates page crossing */
+#define SX_ARRAY_CONSTRAINING  0x00000008      /* When set constrains VRAM */
+                                               /* array offset effective */
+                                               /* address calculation  */
+#define SX_UPG_MPG_DISABLE     0x00000010      /* When set, disables page */
+                                               /* cross input into ld/st */
+                                               /* state machines */
+#define SX_DIAG_INIT           0x4804          /* Setting of the diag reg */
+                                               /* upon reset */
+
 
 /*
  * memory referencing instructions are written to 0x800000000 + PA