Hexagon: Add hypervisor interface
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/hexagon/include/asm/hexagon_vm.h b/arch/hexagon/include/asm/hexagon_vm.h
new file mode 100644
index 0000000..182cb9d
--- /dev/null
+++ b/arch/hexagon/include/asm/hexagon_vm.h
@@ -0,0 +1,281 @@
+/*
+ * Declarations for to Hexagon Virtal Machine.
+ *
+ * Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+#ifndef ASM_HEXAGON_VM_H
+#define ASM_HEXAGON_VM_H
+
+/*
+ * In principle, a Linux kernel for the VM could
+ * selectively define the virtual instructions
+ * as inline assembler macros, but for a first pass,
+ * we'll use subroutines for both the VM and the native
+ * kernels. It's costing a subroutine call/return,
+ * but it makes for a single set of entry points
+ * for tracing/debugging.
+ */
+
+/*
+ * Lets make this stuff visible only if configured,
+ * so we can unconditionally include the file.
+ */
+
+#ifndef __ASSEMBLY__
+
+enum VM_CACHE_OPS {
+ ickill,
+ dckill,
+ l2kill,
+ dccleaninva,
+ icinva,
+ idsync,
+ fetch_cfg
+};
+
+enum VM_INT_OPS {
+ nop,
+ globen,
+ globdis,
+ locen,
+ locdis,
+ affinity,
+ get,
+ peek,
+ status,
+ post,
+ clear
+};
+
+extern void _K_VM_event_vector(void);
+
+void __vmrte(void);
+long __vmsetvec(void *);
+long __vmsetie(long);
+long __vmgetie(void);
+long __vmintop(enum VM_INT_OPS, long, long, long, long);
+long __vmclrmap(void *, unsigned long);
+long __vmnewmap(void *);
+long __vmcache(enum VM_CACHE_OPS op, unsigned long addr, unsigned long len);
+unsigned long long __vmgettime(void);
+long __vmsettime(unsigned long long);
+long __vmstart(void *, void *);
+void __vmstop(void);
+long __vmwait(void);
+void __vmyield(void);
+long __vmvpid(void);
+
+static inline long __vmcache_ickill(void)
+{
+ return __vmcache(ickill, 0, 0);
+}
+
+static inline long __vmcache_dckill(void)
+{
+ return __vmcache(dckill, 0, 0);
+}
+
+static inline long __vmcache_l2kill(void)
+{
+ return __vmcache(l2kill, 0, 0);
+}
+
+static inline long __vmcache_dccleaninva(unsigned long addr, unsigned long len)
+{
+ return __vmcache(dccleaninva, addr, len);
+}
+
+static inline long __vmcache_icinva(unsigned long addr, unsigned long len)
+{
+ return __vmcache(icinva, addr, len);
+}
+
+static inline long __vmcache_idsync(unsigned long addr,
+ unsigned long len)
+{
+ return __vmcache(idsync, addr, len);
+}
+
+static inline long __vmcache_fetch_cfg(unsigned long val)
+{
+ return __vmcache(fetch_cfg, val, 0);
+}
+
+/* interrupt operations */
+
+static inline long __vmintop_nop(void)
+{
+ return __vmintop(nop, 0, 0, 0, 0);
+}
+
+static inline long __vmintop_globen(long i)
+{
+ return __vmintop(globen, i, 0, 0, 0);
+}
+
+static inline long __vmintop_globdis(long i)
+{
+ return __vmintop(globdis, i, 0, 0, 0);
+}
+
+static inline long __vmintop_locen(long i)
+{
+ return __vmintop(locen, i, 0, 0, 0);
+}
+
+static inline long __vmintop_locdis(long i)
+{
+ return __vmintop(locdis, i, 0, 0, 0);
+}
+
+static inline long __vmintop_affinity(long i, long cpu)
+{
+ return __vmintop(locdis, i, cpu, 0, 0);
+}
+
+static inline long __vmintop_get(void)
+{
+ return __vmintop(get, 0, 0, 0, 0);
+}
+
+static inline long __vmintop_peek(void)
+{
+ return __vmintop(peek, 0, 0, 0, 0);
+}
+
+static inline long __vmintop_status(long i)
+{
+ return __vmintop(status, i, 0, 0, 0);
+}
+
+static inline long __vmintop_post(long i)
+{
+ return __vmintop(post, i, 0, 0, 0);
+}
+
+static inline long __vmintop_clear(long i)
+{
+ return __vmintop(clear, i, 0, 0, 0);
+}
+
+#else /* Only assembly code should reference these */
+
+#define HVM_TRAP1_VMRTE 1
+#define HVM_TRAP1_VMSETVEC 2
+#define HVM_TRAP1_VMSETIE 3
+#define HVM_TRAP1_VMGETIE 4
+#define HVM_TRAP1_VMINTOP 5
+#define HVM_TRAP1_VMCLRMAP 10
+#define HVM_TRAP1_VMNEWMAP 11
+#define HVM_TRAP1_FORMERLY_VMWIRE 12
+#define HVM_TRAP1_VMCACHE 13
+#define HVM_TRAP1_VMGETTIME 14
+#define HVM_TRAP1_VMSETTIME 15
+#define HVM_TRAP1_VMWAIT 16
+#define HVM_TRAP1_VMYIELD 17
+#define HVM_TRAP1_VMSTART 18
+#define HVM_TRAP1_VMSTOP 19
+#define HVM_TRAP1_VMVPID 20
+#define HVM_TRAP1_VMSETREGS 21
+#define HVM_TRAP1_VMGETREGS 22
+
+#endif /* __ASSEMBLY__ */
+
+/*
+ * Constants for virtual instruction parameters and return values
+ */
+
+/* vmsetie arguments */
+
+#define VM_INT_DISABLE 0
+#define VM_INT_ENABLE 1
+
+/* vmsetimask arguments */
+
+#define VM_INT_UNMASK 0
+#define VM_INT_MASK 1
+
+#define VM_NEWMAP_TYPE_LINEAR 0
+#define VM_NEWMAP_TYPE_PGTABLES 1
+
+
+/*
+ * Event Record definitions useful to both C and Assembler
+ */
+
+/* VMEST Layout */
+
+#define HVM_VMEST_UM_SFT 31
+#define HVM_VMEST_UM_MSK 1
+#define HVM_VMEST_IE_SFT 30
+#define HVM_VMEST_IE_MSK 1
+#define HVM_VMEST_EVENTNUM_SFT 16
+#define HVM_VMEST_EVENTNUM_MSK 0xff
+#define HVM_VMEST_CAUSE_SFT 0
+#define HVM_VMEST_CAUSE_MSK 0xffff
+
+/*
+ * The initial program gets to find a system environment descriptor
+ * on its stack when it begins exection. The first word is a version
+ * code to indicate what is there. Zero means nothing more.
+ */
+
+#define HEXAGON_VM_SED_NULL 0
+
+/*
+ * Event numbers for vector binding
+ */
+
+#define HVM_EV_RESET 0
+#define HVM_EV_MACHCHECK 1
+#define HVM_EV_GENEX 2
+#define HVM_EV_TRAP 8
+#define HVM_EV_INTR 15
+/* These shoud be nuked as soon as we know the VM is up to spec v0.1.1 */
+#define HVM_EV_INTR_0 16
+#define HVM_MAX_INTR 240
+
+/*
+ * Cause values for General Exception
+ */
+
+#define HVM_GE_C_BUS 0x01
+#define HVM_GE_C_XPROT 0x11
+#define HVM_GE_C_XUSER 0x14
+#define HVM_GE_C_INVI 0x15
+#define HVM_GE_C_PRIVI 0x1B
+#define HVM_GE_C_XMAL 0x1C
+#define HVM_GE_C_RMAL 0x20
+#define HVM_GE_C_WMAL 0x21
+#define HVM_GE_C_RPROT 0x22
+#define HVM_GE_C_WPROT 0x23
+#define HVM_GE_C_RUSER 0x24
+#define HVM_GE_C_WUSER 0x25
+#define HVM_GE_C_CACHE 0x28
+
+/*
+ * Cause codes for Machine Check
+ */
+
+#define HVM_MCHK_C_DOWN 0x00
+#define HVM_MCHK_C_BADSP 0x01
+#define HVM_MCHK_C_BADEX 0x02
+#define HVM_MCHK_C_BADPT 0x03
+#define HVM_MCHK_C_REGWR 0x29
+
+#endif