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-rw-r--r--arch/powerpc/sysdev/dart.h64
1 files changed, 64 insertions, 0 deletions
diff --git a/arch/powerpc/sysdev/dart.h b/arch/powerpc/sysdev/dart.h
new file mode 100644
index 000000000..7f5df03d3
--- /dev/null
+++ b/arch/powerpc/sysdev/dart.h
@@ -0,0 +1,64 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2004 Olof Johansson <olof@lixom.net>, IBM Corporation
+ */
+
+#ifndef _POWERPC_SYSDEV_DART_H
+#define _POWERPC_SYSDEV_DART_H
+
+
+/* Offset from base to control register */
+#define DART_CNTL 0
+
+/* Offset from base to exception register */
+#define DART_EXCP_U3 0x10
+/* Offset from base to TLB tag registers */
+#define DART_TAGS_U3 0x1000
+
+/* U4 registers */
+#define DART_BASE_U4 0x10
+#define DART_SIZE_U4 0x20
+#define DART_EXCP_U4 0x30
+#define DART_TAGS_U4 0x1000
+
+/* Control Register fields */
+
+/* U3 registers */
+#define DART_CNTL_U3_BASE_MASK 0xfffff
+#define DART_CNTL_U3_BASE_SHIFT 12
+#define DART_CNTL_U3_FLUSHTLB 0x400
+#define DART_CNTL_U3_ENABLE 0x200
+#define DART_CNTL_U3_SIZE_MASK 0x1ff
+#define DART_CNTL_U3_SIZE_SHIFT 0
+
+/* U4 registers */
+#define DART_BASE_U4_BASE_MASK 0xffffff
+#define DART_BASE_U4_BASE_SHIFT 0
+#define DART_CNTL_U4_ENABLE 0x80000000
+#define DART_CNTL_U4_IONE 0x40000000
+#define DART_CNTL_U4_FLUSHTLB 0x20000000
+#define DART_CNTL_U4_IDLE 0x10000000
+#define DART_CNTL_U4_PAR_EN 0x08000000
+#define DART_CNTL_U4_IONE_MASK 0x07ffffff
+#define DART_SIZE_U4_SIZE_MASK 0x1fff
+#define DART_SIZE_U4_SIZE_SHIFT 0
+
+#define DART_REG(r) (dart + ((r) >> 2))
+#define DART_IN(r) (in_be32(DART_REG(r)))
+#define DART_OUT(r,v) (out_be32(DART_REG(r), (v)))
+
+
+/* size of table in pages */
+
+
+/* DART table fields */
+
+#define DARTMAP_VALID 0x80000000
+#define DARTMAP_RPNMASK 0x00ffffff
+
+
+#define DART_PAGE_SHIFT 12
+#define DART_PAGE_SIZE (1 << DART_PAGE_SHIFT)
+
+
+#endif /* _POWERPC_SYSDEV_DART_H */