1 files changed, 276 insertions, 0 deletions
diff --git a/arch/hexagon/include/asm/hexagon_vm.h b/arch/hexagon/include/asm/hexagon_vm.h
new file mode 100644
index 000000000..9aa2493fe
--- /dev/null
+++ b/arch/hexagon/include/asm/hexagon_vm.h
@@ -0,0 +1,276 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Declarations for to Hexagon Virtal Machine.
+ *
+ * Copyright (c) 2010-2013, The Linux Foundation. All rights reserved.
+ */
+
+#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.
+ */
+
+#define HVM_TRAP1_VMVERSION		0
+#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
+#define HVM_TRAP1_VMTIMEROP		24
+
+#ifndef __ASSEMBLY__
+
+enum VM_CACHE_OPS {
+	hvmc_ickill,
+	hvmc_dckill,
+	hvmc_l2kill,
+	hvmc_dccleaninva,
+	hvmc_icinva,
+	hvmc_idsync,
+	hvmc_fetch_cfg
+};
+
+enum VM_INT_OPS {
+	hvmi_nop,
+	hvmi_globen,
+	hvmi_globdis,
+	hvmi_locen,
+	hvmi_locdis,
+	hvmi_affinity,
+	hvmi_get,
+	hvmi_peek,
+	hvmi_status,
+	hvmi_post,
+	hvmi_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(hvmc_ickill, 0, 0);
+}
+
+static inline long __vmcache_dckill(void)
+{
+	return __vmcache(hvmc_dckill, 0, 0);
+}
+
+static inline long __vmcache_l2kill(void)
+{
+	return __vmcache(hvmc_l2kill, 0, 0);
+}
+
+static inline long __vmcache_dccleaninva(unsigned long addr, unsigned long len)
+{
+	return __vmcache(hvmc_dccleaninva, addr, len);
+}
+
+static inline long __vmcache_icinva(unsigned long addr, unsigned long len)
+{
+	return __vmcache(hvmc_icinva, addr, len);
+}
+
+static inline long __vmcache_idsync(unsigned long addr,
+					   unsigned long len)
+{
+	return __vmcache(hvmc_idsync, addr, len);
+}
+
+static inline long __vmcache_fetch_cfg(unsigned long val)
+{
+	return __vmcache(hvmc_fetch_cfg, val, 0);
+}
+
+/* interrupt operations  */
+
+static inline long __vmintop_nop(void)
+{
+	return __vmintop(hvmi_nop, 0, 0, 0, 0);
+}
+
+static inline long __vmintop_globen(long i)
+{
+	return __vmintop(hvmi_globen, i, 0, 0, 0);
+}
+
+static inline long __vmintop_globdis(long i)
+{
+	return __vmintop(hvmi_globdis, i, 0, 0, 0);
+}
+
+static inline long __vmintop_locen(long i)
+{
+	return __vmintop(hvmi_locen, i, 0, 0, 0);
+}
+
+static inline long __vmintop_locdis(long i)
+{
+	return __vmintop(hvmi_locdis, i, 0, 0, 0);
+}
+
+static inline long __vmintop_affinity(long i, long cpu)
+{
+	return __vmintop(hvmi_affinity, i, cpu, 0, 0);
+}
+
+static inline long __vmintop_get(void)
+{
+	return __vmintop(hvmi_get, 0, 0, 0, 0);
+}
+
+static inline long __vmintop_peek(void)
+{
+	return __vmintop(hvmi_peek, 0, 0, 0, 0);
+}
+
+static inline long __vmintop_status(long i)
+{
+	return __vmintop(hvmi_status, i, 0, 0, 0);
+}
+
+static inline long __vmintop_post(long i)
+{
+	return __vmintop(hvmi_post, i, 0, 0, 0);
+}
+
+static inline long __vmintop_clear(long i)
+{
+	return __vmintop(hvmi_clear, i, 0, 0, 0);
+}
+
+#else /* Only assembly code should reference these */
+
+#endif /* __ASSEMBLY__ */
+
+/*
+ * Constants for virtual instruction parameters and return values
+ */
+
+/* vmnewmap arguments */
+
+#define VM_TRANS_TYPE_LINEAR 0
+#define VM_TRANS_TYPE_TABLE 1
+#define VM_TLB_INVALIDATE_FALSE 0
+#define VM_TLB_INVALIDATE_TRUE 1
+
+/* 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_SS_SFT	29
+#define HVM_VMEST_SS_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 execution. 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_WREG	0x1D
+#define HVM_GE_C_PCAL	0x1E
+#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