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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>
This commit is contained in:
Richard Kuo
Linus Torvalds
parent
c150290df4
commit
e49ee2906c
281
arch/hexagon/include/asm/hexagon_vm.h
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281
arch/hexagon/include/asm/hexagon_vm.h
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@ -0,0 +1,281 @@
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/*
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* Declarations for to Hexagon Virtal Machine.
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*
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* Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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#ifndef ASM_HEXAGON_VM_H
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#define ASM_HEXAGON_VM_H
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/*
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* In principle, a Linux kernel for the VM could
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* selectively define the virtual instructions
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* as inline assembler macros, but for a first pass,
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* we'll use subroutines for both the VM and the native
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* kernels. It's costing a subroutine call/return,
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* but it makes for a single set of entry points
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* for tracing/debugging.
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*/
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/*
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* Lets make this stuff visible only if configured,
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* so we can unconditionally include the file.
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*/
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#ifndef __ASSEMBLY__
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enum VM_CACHE_OPS {
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ickill,
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dckill,
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l2kill,
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dccleaninva,
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icinva,
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idsync,
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fetch_cfg
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};
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enum VM_INT_OPS {
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nop,
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globen,
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globdis,
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locen,
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locdis,
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affinity,
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get,
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peek,
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status,
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post,
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clear
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};
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extern void _K_VM_event_vector(void);
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void __vmrte(void);
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long __vmsetvec(void *);
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long __vmsetie(long);
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long __vmgetie(void);
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long __vmintop(enum VM_INT_OPS, long, long, long, long);
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long __vmclrmap(void *, unsigned long);
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long __vmnewmap(void *);
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long __vmcache(enum VM_CACHE_OPS op, unsigned long addr, unsigned long len);
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unsigned long long __vmgettime(void);
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long __vmsettime(unsigned long long);
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long __vmstart(void *, void *);
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void __vmstop(void);
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long __vmwait(void);
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void __vmyield(void);
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long __vmvpid(void);
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static inline long __vmcache_ickill(void)
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{
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return __vmcache(ickill, 0, 0);
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}
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static inline long __vmcache_dckill(void)
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{
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return __vmcache(dckill, 0, 0);
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}
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static inline long __vmcache_l2kill(void)
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{
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return __vmcache(l2kill, 0, 0);
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}
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static inline long __vmcache_dccleaninva(unsigned long addr, unsigned long len)
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{
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return __vmcache(dccleaninva, addr, len);
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}
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static inline long __vmcache_icinva(unsigned long addr, unsigned long len)
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{
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return __vmcache(icinva, addr, len);
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}
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static inline long __vmcache_idsync(unsigned long addr,
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unsigned long len)
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{
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return __vmcache(idsync, addr, len);
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}
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static inline long __vmcache_fetch_cfg(unsigned long val)
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{
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return __vmcache(fetch_cfg, val, 0);
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}
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/* interrupt operations */
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static inline long __vmintop_nop(void)
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{
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return __vmintop(nop, 0, 0, 0, 0);
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}
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static inline long __vmintop_globen(long i)
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{
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return __vmintop(globen, i, 0, 0, 0);
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}
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static inline long __vmintop_globdis(long i)
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{
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return __vmintop(globdis, i, 0, 0, 0);
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}
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static inline long __vmintop_locen(long i)
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{
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return __vmintop(locen, i, 0, 0, 0);
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}
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static inline long __vmintop_locdis(long i)
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{
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return __vmintop(locdis, i, 0, 0, 0);
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}
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static inline long __vmintop_affinity(long i, long cpu)
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{
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return __vmintop(locdis, i, cpu, 0, 0);
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}
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static inline long __vmintop_get(void)
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{
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return __vmintop(get, 0, 0, 0, 0);
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}
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static inline long __vmintop_peek(void)
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{
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return __vmintop(peek, 0, 0, 0, 0);
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}
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static inline long __vmintop_status(long i)
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{
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return __vmintop(status, i, 0, 0, 0);
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}
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static inline long __vmintop_post(long i)
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{
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return __vmintop(post, i, 0, 0, 0);
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}
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static inline long __vmintop_clear(long i)
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{
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return __vmintop(clear, i, 0, 0, 0);
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}
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#else /* Only assembly code should reference these */
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#define HVM_TRAP1_VMRTE 1
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#define HVM_TRAP1_VMSETVEC 2
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#define HVM_TRAP1_VMSETIE 3
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#define HVM_TRAP1_VMGETIE 4
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#define HVM_TRAP1_VMINTOP 5
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#define HVM_TRAP1_VMCLRMAP 10
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#define HVM_TRAP1_VMNEWMAP 11
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#define HVM_TRAP1_FORMERLY_VMWIRE 12
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#define HVM_TRAP1_VMCACHE 13
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#define HVM_TRAP1_VMGETTIME 14
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#define HVM_TRAP1_VMSETTIME 15
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#define HVM_TRAP1_VMWAIT 16
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#define HVM_TRAP1_VMYIELD 17
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#define HVM_TRAP1_VMSTART 18
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#define HVM_TRAP1_VMSTOP 19
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#define HVM_TRAP1_VMVPID 20
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#define HVM_TRAP1_VMSETREGS 21
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#define HVM_TRAP1_VMGETREGS 22
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#endif /* __ASSEMBLY__ */
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/*
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* Constants for virtual instruction parameters and return values
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*/
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/* vmsetie arguments */
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#define VM_INT_DISABLE 0
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#define VM_INT_ENABLE 1
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/* vmsetimask arguments */
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#define VM_INT_UNMASK 0
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#define VM_INT_MASK 1
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#define VM_NEWMAP_TYPE_LINEAR 0
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#define VM_NEWMAP_TYPE_PGTABLES 1
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/*
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* Event Record definitions useful to both C and Assembler
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*/
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/* VMEST Layout */
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#define HVM_VMEST_UM_SFT 31
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#define HVM_VMEST_UM_MSK 1
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#define HVM_VMEST_IE_SFT 30
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#define HVM_VMEST_IE_MSK 1
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#define HVM_VMEST_EVENTNUM_SFT 16
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#define HVM_VMEST_EVENTNUM_MSK 0xff
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#define HVM_VMEST_CAUSE_SFT 0
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#define HVM_VMEST_CAUSE_MSK 0xffff
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/*
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* The initial program gets to find a system environment descriptor
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* on its stack when it begins exection. The first word is a version
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* code to indicate what is there. Zero means nothing more.
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*/
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#define HEXAGON_VM_SED_NULL 0
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/*
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* Event numbers for vector binding
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*/
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#define HVM_EV_RESET 0
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#define HVM_EV_MACHCHECK 1
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#define HVM_EV_GENEX 2
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#define HVM_EV_TRAP 8
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#define HVM_EV_INTR 15
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/* These shoud be nuked as soon as we know the VM is up to spec v0.1.1 */
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#define HVM_EV_INTR_0 16
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#define HVM_MAX_INTR 240
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/*
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* Cause values for General Exception
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*/
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#define HVM_GE_C_BUS 0x01
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#define HVM_GE_C_XPROT 0x11
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#define HVM_GE_C_XUSER 0x14
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#define HVM_GE_C_INVI 0x15
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#define HVM_GE_C_PRIVI 0x1B
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#define HVM_GE_C_XMAL 0x1C
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#define HVM_GE_C_RMAL 0x20
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#define HVM_GE_C_WMAL 0x21
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#define HVM_GE_C_RPROT 0x22
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#define HVM_GE_C_WPROT 0x23
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#define HVM_GE_C_RUSER 0x24
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#define HVM_GE_C_WUSER 0x25
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#define HVM_GE_C_CACHE 0x28
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/*
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* Cause codes for Machine Check
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*/
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#define HVM_MCHK_C_DOWN 0x00
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#define HVM_MCHK_C_BADSP 0x01
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#define HVM_MCHK_C_BADEX 0x02
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#define HVM_MCHK_C_BADPT 0x03
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#define HVM_MCHK_C_REGWR 0x29
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#endif
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111
arch/hexagon/include/asm/vm_mmu.h
Normal file
111
arch/hexagon/include/asm/vm_mmu.h
Normal file
@ -0,0 +1,111 @@
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/*
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* Hexagon VM page table entry definitions
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*
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* Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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#ifndef _ASM_VM_MMU_H
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#define _ASM_VM_MMU_H
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/*
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* Shift, mask, and other constants for the Hexagon Virtual Machine
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* page tables.
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*
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* Virtual machine MMU allows first-level entries to either be
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* single-level lookup PTEs for very large pages, or PDEs pointing
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* to second-level PTEs for smaller pages. If PTE is single-level,
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* the least significant bits cannot be used as software bits to encode
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* virtual memory subsystem information about the page, and that state
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* must be maintained in some parallel data structure.
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*/
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/* S or Page Size field in PDE */
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#define __HVM_PDE_S (0x7 << 0)
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#define __HVM_PDE_S_4KB 0
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#define __HVM_PDE_S_16KB 1
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#define __HVM_PDE_S_64KB 2
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#define __HVM_PDE_S_256KB 3
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#define __HVM_PDE_S_1MB 4
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#define __HVM_PDE_S_4MB 5
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#define __HVM_PDE_S_16MB 6
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#define __HVM_PDE_S_INVALID 7
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/* Masks for L2 page table pointer, as function of page size */
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#define __HVM_PDE_PTMASK_4KB 0xfffff000
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#define __HVM_PDE_PTMASK_16KB 0xfffffc00
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#define __HVM_PDE_PTMASK_64KB 0xffffff00
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#define __HVM_PDE_PTMASK_256KB 0xffffffc0
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#define __HVM_PDE_PTMASK_1MB 0xfffffff0
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/*
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* Virtual Machine PTE Bits/Fields
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*/
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#define __HVM_PTE_T (1<<4)
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#define __HVM_PTE_U (1<<5)
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#define __HVM_PTE_C (0x7<<6)
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#define __HVM_PTE_CVAL(pte) (((pte) & __HVM_PTE_C) >> 6)
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#define __HVM_PTE_R (1<<9)
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#define __HVM_PTE_W (1<<10)
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#define __HVM_PTE_X (1<<11)
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/*
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* Cache Attributes, to be shifted as necessary for virtual/physical PTEs
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*/
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#define __HEXAGON_C_WB 0x0 /* Write-back, no L2 */
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#define __HEXAGON_C_WT 0x1 /* Write-through, no L2 */
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#define __HEXAGON_C_DEV 0x4 /* Device register space */
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#define __HEXAGON_C_WT_L2 0x5 /* Write-through, with L2 */
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/* this really should be #if CONFIG_HEXAGON_ARCH = 2 but that's not defined */
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#if defined(CONFIG_HEXAGON_COMET) || defined(CONFIG_QDSP6_ST1)
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#define __HEXAGON_C_UNC __HEXAGON_C_DEV
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#else
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#define __HEXAGON_C_UNC 0x6 /* Uncached memory */
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#endif
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#define __HEXAGON_C_WB_L2 0x7 /* Write-back, with L2 */
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/*
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* This can be overriden, but we're defaulting to the most aggressive
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* cache policy, the better to find bugs sooner.
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*/
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#define CACHE_DEFAULT __HEXAGON_C_WB_L2
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/* Masks for physical page address, as a function of page size */
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#define __HVM_PTE_PGMASK_4KB 0xfffff000
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#define __HVM_PTE_PGMASK_16KB 0xffffc000
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#define __HVM_PTE_PGMASK_64KB 0xffff0000
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#define __HVM_PTE_PGMASK_256KB 0xfffc0000
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#define __HVM_PTE_PGMASK_1MB 0xfff00000
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/* Masks for single-level large page lookups */
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#define __HVM_PTE_PGMASK_4MB 0xffc00000
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#define __HVM_PTE_PGMASK_16MB 0xff000000
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/*
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* "Big kernel page mappings" (see vm_init_segtable.S)
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* are currently 16MB
|
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*/
|
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#define BIG_KERNEL_PAGE_SHIFT 24
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#define BIG_KERNEL_PAGE_SIZE (1 << BIG_KERNEL_PAGE_SHIFT)
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#endif /* _ASM_VM_MMU_H */
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269
arch/hexagon/kernel/vm_entry.S
Normal file
269
arch/hexagon/kernel/vm_entry.S
Normal file
@ -0,0 +1,269 @@
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/*
|
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* Event entry/exit for Hexagon
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#include <asm/asm-offsets.h> /* assembly-safer versions of C defines */
|
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#include <asm/mem-layout.h> /* sigh, except for page_offset */
|
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#include <asm/hexagon_vm.h>
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#include <asm/thread_info.h>
|
||||
|
||||
/*
|
||||
* Entry into guest-mode Linux under Hexagon Virtual Machine.
|
||||
* Stack pointer points to event record - build pt_regs on top of it,
|
||||
* set up a plausible C stack frame, and dispatch to the C handler.
|
||||
* On return, do vmrte virtual instruction with SP where we started.
|
||||
*
|
||||
* VM Spec 0.5 uses a trap to fetch HVM record now.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Save full register state, while setting up thread_info struct
|
||||
* pointer derived from kernel stack pointer in THREADINFO_REG
|
||||
* register, putting prior thread_info.regs pointer in a callee-save
|
||||
* register (R24, which had better not ever be assigned to THREADINFO_REG),
|
||||
* and updating thread_info.regs to point to current stack frame,
|
||||
* so as to support nested events in kernel mode.
|
||||
*
|
||||
* As this is common code, we set the pt_regs system call number
|
||||
* to -1 for all events. It will be replaced with the system call
|
||||
* number in the case where we decode a system call (trap0(#1)).
|
||||
*/
|
||||
|
||||
#define save_pt_regs()\
|
||||
memd(R0 + #_PT_R3130) = R31:30; \
|
||||
{ memw(R0 + #_PT_R2928) = R28; \
|
||||
R31 = memw(R0 + #_PT_ER_VMPSP); }\
|
||||
{ memw(R0 + #(_PT_R2928 + 4)) = R31; \
|
||||
R31 = ugp; } \
|
||||
{ memd(R0 + #_PT_R2726) = R27:26; \
|
||||
R30 = gp ; } \
|
||||
memd(R0 + #_PT_R2524) = R25:24; \
|
||||
memd(R0 + #_PT_R2322) = R23:22; \
|
||||
memd(R0 + #_PT_R2120) = R21:20; \
|
||||
memd(R0 + #_PT_R1918) = R19:18; \
|
||||
memd(R0 + #_PT_R1716) = R17:16; \
|
||||
memd(R0 + #_PT_R1514) = R15:14; \
|
||||
memd(R0 + #_PT_R1312) = R13:12; \
|
||||
{ memd(R0 + #_PT_R1110) = R11:10; \
|
||||
R15 = lc0; } \
|
||||
{ memd(R0 + #_PT_R0908) = R9:8; \
|
||||
R14 = sa0; } \
|
||||
{ memd(R0 + #_PT_R0706) = R7:6; \
|
||||
R13 = lc1; } \
|
||||
{ memd(R0 + #_PT_R0504) = R5:4; \
|
||||
R12 = sa1; } \
|
||||
{ memd(R0 + #_PT_UGPGP) = R31:30; \
|
||||
R11 = m1; \
|
||||
R2.H = #HI(_THREAD_SIZE); } \
|
||||
{ memd(R0 + #_PT_LC0SA0) = R15:14; \
|
||||
R10 = m0; \
|
||||
R2.L = #LO(_THREAD_SIZE); } \
|
||||
{ memd(R0 + #_PT_LC1SA1) = R13:12; \
|
||||
R15 = p3:0; \
|
||||
R2 = neg(R2); } \
|
||||
{ memd(R0 + #_PT_M1M0) = R11:10; \
|
||||
R14 = usr; \
|
||||
R2 = and(R0,R2); } \
|
||||
{ memd(R0 + #_PT_PREDSUSR) = R15:14; \
|
||||
THREADINFO_REG = R2; } \
|
||||
{ r24 = memw(THREADINFO_REG + #_THREAD_INFO_PT_REGS); \
|
||||
memw(THREADINFO_REG + #_THREAD_INFO_PT_REGS) = R0; \
|
||||
R2 = #-1; } \
|
||||
{ memw(R0 + #_PT_SYSCALL_NR) = R2; \
|
||||
R30 = #0; }
|
||||
|
||||
/*
|
||||
* Restore registers and thread_info.regs state. THREADINFO_REG
|
||||
* is assumed to still be sane, and R24 to have been correctly
|
||||
* preserved. Don't restore R29 (SP) until later.
|
||||
*/
|
||||
|
||||
#define restore_pt_regs() \
|
||||
{ memw(THREADINFO_REG + #_THREAD_INFO_PT_REGS) = R24; \
|
||||
R15:14 = memd(R0 + #_PT_PREDSUSR); } \
|
||||
{ R11:10 = memd(R0 + #_PT_M1M0); \
|
||||
p3:0 = R15; } \
|
||||
{ R13:12 = memd(R0 + #_PT_LC1SA1); \
|
||||
usr = R14; } \
|
||||
{ R15:14 = memd(R0 + #_PT_LC0SA0); \
|
||||
m1 = R11; } \
|
||||
{ R3:2 = memd(R0 + #_PT_R0302); \
|
||||
m0 = R10; } \
|
||||
{ R5:4 = memd(R0 + #_PT_R0504); \
|
||||
lc1 = R13; } \
|
||||
{ R7:6 = memd(R0 + #_PT_R0706); \
|
||||
sa1 = R12; } \
|
||||
{ R9:8 = memd(R0 + #_PT_R0908); \
|
||||
lc0 = R15; } \
|
||||
{ R11:10 = memd(R0 + #_PT_R1110); \
|
||||
sa0 = R14; } \
|
||||
{ R13:12 = memd(R0 + #_PT_R1312); \
|
||||
R15:14 = memd(R0 + #_PT_R1514); } \
|
||||
{ R17:16 = memd(R0 + #_PT_R1716); \
|
||||
R19:18 = memd(R0 + #_PT_R1918); } \
|
||||
{ R21:20 = memd(R0 + #_PT_R2120); \
|
||||
R23:22 = memd(R0 + #_PT_R2322); } \
|
||||
{ R25:24 = memd(R0 + #_PT_R2524); \
|
||||
R27:26 = memd(R0 + #_PT_R2726); } \
|
||||
R31:30 = memd(R0 + #_PT_UGPGP); \
|
||||
{ R28 = memw(R0 + #_PT_R2928); \
|
||||
ugp = R31; } \
|
||||
{ R31:30 = memd(R0 + #_PT_R3130); \
|
||||
gp = R30; }
|
||||
|
||||
/*
|
||||
* Clears off enough space for the rest of pt_regs; evrec is a part
|
||||
* of pt_regs in HVM mode. Save R0/R1, set handler's address in R1.
|
||||
* R0 is the address of pt_regs and is the parameter to save_pt_regs.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Since the HVM isn't automagically pushing the EVREC onto the stack anymore,
|
||||
* we'll subract the entire size out and then fill it in ourselves.
|
||||
* Need to save off R0, R1, R2, R3 immediately.
|
||||
*/
|
||||
|
||||
#define vm_event_entry(CHandler) \
|
||||
{ \
|
||||
R29 = add(R29, #-(_PT_REGS_SIZE)); \
|
||||
memd(R29 + #(_PT_R0100 + -_PT_REGS_SIZE)) = R1:0; \
|
||||
} \
|
||||
{ \
|
||||
memd(R29 +#_PT_R0302) = R3:2; \
|
||||
} \
|
||||
trap1(#HVM_TRAP1_VMGETREGS); \
|
||||
{ \
|
||||
memd(R29 + #_PT_ER_VMEL) = R1:0; \
|
||||
R0 = R29; \
|
||||
R1.L = #LO(CHandler); \
|
||||
} \
|
||||
{ \
|
||||
memd(R29 + #_PT_ER_VMPSP) = R3:2; \
|
||||
R1.H = #HI(CHandler); \
|
||||
jump event_dispatch; \
|
||||
}
|
||||
|
||||
.text
|
||||
/*
|
||||
* Do bulk save/restore in one place.
|
||||
* Adds a jump to dispatch latency, but
|
||||
* saves hundreds of bytes.
|
||||
*/
|
||||
|
||||
event_dispatch:
|
||||
save_pt_regs()
|
||||
callr r1
|
||||
|
||||
/*
|
||||
* If we were in kernel mode, we don't need to check scheduler
|
||||
* or signals if CONFIG_PREEMPT is not set. If set, then it has
|
||||
* to jump to a need_resched kind of block.
|
||||
* BTW, CONFIG_PREEMPT is not supported yet.
|
||||
*/
|
||||
|
||||
#ifdef CONFIG_PREEMPT
|
||||
R0 = #VM_INT_DISABLE
|
||||
trap1(#HVM_TRAP1_VMSETIE)
|
||||
#endif
|
||||
|
||||
/* "Nested control path" -- if the previous mode was kernel */
|
||||
R0 = memw(R29 + #_PT_ER_VMEST);
|
||||
P0 = tstbit(R0, #HVM_VMEST_UM_SFT);
|
||||
if !P0 jump restore_all;
|
||||
/*
|
||||
* Returning from system call, normally coming back from user mode
|
||||
*/
|
||||
return_from_syscall:
|
||||
/* Disable interrupts while checking TIF */
|
||||
R0 = #VM_INT_DISABLE
|
||||
trap1(#HVM_TRAP1_VMSETIE)
|
||||
|
||||
/*
|
||||
* Coming back from the C-world, our thread info pointer
|
||||
* should be in the designated register (usually R19)
|
||||
*/
|
||||
R1.L = #LO(_TIF_ALLWORK_MASK)
|
||||
{
|
||||
R1.H = #HI(_TIF_ALLWORK_MASK);
|
||||
R0 = memw(THREADINFO_REG + #_THREAD_INFO_FLAGS);
|
||||
}
|
||||
|
||||
/*
|
||||
* Compare against the "return to userspace" _TIF_WORK_MASK
|
||||
*/
|
||||
R1 = and(R1,R0);
|
||||
{ P0 = cmp.eq(R1,#0); if (!P0.new) jump:t work_pending;}
|
||||
jump restore_all; /* we're outta here! */
|
||||
|
||||
work_pending:
|
||||
{
|
||||
P0 = tstbit(R1, #TIF_NEED_RESCHED);
|
||||
if (!P0.new) jump:nt work_notifysig;
|
||||
}
|
||||
call schedule
|
||||
jump return_from_syscall; /* check for more work */
|
||||
|
||||
work_notifysig:
|
||||
/* this is the part that's kind of fuzzy. */
|
||||
R1 = and(R0, #(_TIF_SIGPENDING | _TIF_NOTIFY_RESUME));
|
||||
P0 = cmp.eq(R1, #0);
|
||||
if P0 jump restore_all
|
||||
R1 = R0; /* unsigned long thread_info_flags */
|
||||
R0 = R29; /* regs should still be at top of stack */
|
||||
call do_notify_resume
|
||||
|
||||
restore_all:
|
||||
/* Disable interrupts, if they weren't already, before reg restore. */
|
||||
R0 = #VM_INT_DISABLE
|
||||
trap1(#HVM_TRAP1_VMSETIE)
|
||||
|
||||
/* do the setregs here for VM 0.5 */
|
||||
/* R29 here should already be pointing at pt_regs */
|
||||
R1:0 = memd(R29 + #_PT_ER_VMEL);
|
||||
R3:2 = memd(R29 + #_PT_ER_VMPSP);
|
||||
trap1(#HVM_TRAP1_VMSETREGS);
|
||||
|
||||
R0 = R29
|
||||
restore_pt_regs()
|
||||
R1:0 = memd(R29 + #_PT_R0100);
|
||||
R29 = add(R29, #_PT_REGS_SIZE);
|
||||
trap1(#HVM_TRAP1_VMRTE)
|
||||
/* Notreached */
|
||||
|
||||
.globl _K_enter_genex
|
||||
_K_enter_genex:
|
||||
vm_event_entry(do_genex)
|
||||
|
||||
.globl _K_enter_interrupt
|
||||
_K_enter_interrupt:
|
||||
vm_event_entry(arch_do_IRQ)
|
||||
|
||||
.globl _K_enter_trap0
|
||||
_K_enter_trap0:
|
||||
vm_event_entry(do_trap0)
|
||||
|
||||
.globl _K_enter_machcheck
|
||||
_K_enter_machcheck:
|
||||
vm_event_entry(do_machcheck)
|
||||
|
||||
|
||||
.globl ret_from_fork
|
||||
ret_from_fork:
|
||||
call schedule_tail
|
||||
jump return_from_syscall
|
||||
101
arch/hexagon/kernel/vm_events.c
Normal file
101
arch/hexagon/kernel/vm_events.c
Normal file
@ -0,0 +1,101 @@
|
||||
/*
|
||||
* Mostly IRQ support for Hexagon
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#include <linux/kernel.h>
|
||||
#include <asm/registers.h>
|
||||
#include <linux/irq.h>
|
||||
#include <linux/hardirq.h>
|
||||
#include <asm/system.h>
|
||||
|
||||
/*
|
||||
* show_regs - print pt_regs structure
|
||||
* @regs: pointer to pt_regs
|
||||
*
|
||||
* To-do: add all the accessor definitions to registers.h
|
||||
*
|
||||
* Will make this routine a lot easier to write.
|
||||
*/
|
||||
void show_regs(struct pt_regs *regs)
|
||||
{
|
||||
printk(KERN_EMERG "restart_r0: \t0x%08lx syscall_nr: %ld\n",
|
||||
regs->restart_r0, regs->syscall_nr);
|
||||
printk(KERN_EMERG "preds: \t\t0x%08lx\n", regs->preds);
|
||||
printk(KERN_EMERG "lc0: \t0x%08lx sa0: 0x%08lx m0: 0x%08lx\n",
|
||||
regs->lc0, regs->sa0, regs->m0);
|
||||
printk(KERN_EMERG "lc1: \t0x%08lx sa1: 0x%08lx m1: 0x%08lx\n",
|
||||
regs->lc1, regs->sa1, regs->m1);
|
||||
printk(KERN_EMERG "gp: \t0x%08lx ugp: 0x%08lx usr: 0x%08lx\n",
|
||||
regs->gp, regs->ugp, regs->usr);
|
||||
printk(KERN_EMERG "r0: \t0x%08lx %08lx %08lx %08lx\n", regs->r00,
|
||||
regs->r01,
|
||||
regs->r02,
|
||||
regs->r03);
|
||||
printk(KERN_EMERG "r4: \t0x%08lx %08lx %08lx %08lx\n", regs->r04,
|
||||
regs->r05,
|
||||
regs->r06,
|
||||
regs->r07);
|
||||
printk(KERN_EMERG "r8: \t0x%08lx %08lx %08lx %08lx\n", regs->r08,
|
||||
regs->r09,
|
||||
regs->r10,
|
||||
regs->r11);
|
||||
printk(KERN_EMERG "r12: \t0x%08lx %08lx %08lx %08lx\n", regs->r12,
|
||||
regs->r13,
|
||||
regs->r14,
|
||||
regs->r15);
|
||||
printk(KERN_EMERG "r16: \t0x%08lx %08lx %08lx %08lx\n", regs->r16,
|
||||
regs->r17,
|
||||
regs->r18,
|
||||
regs->r19);
|
||||
printk(KERN_EMERG "r20: \t0x%08lx %08lx %08lx %08lx\n", regs->r20,
|
||||
regs->r21,
|
||||
regs->r22,
|
||||
regs->r23);
|
||||
printk(KERN_EMERG "r24: \t0x%08lx %08lx %08lx %08lx\n", regs->r24,
|
||||
regs->r25,
|
||||
regs->r26,
|
||||
regs->r27);
|
||||
printk(KERN_EMERG "r28: \t0x%08lx %08lx %08lx %08lx\n", regs->r28,
|
||||
regs->r29,
|
||||
regs->r30,
|
||||
regs->r31);
|
||||
|
||||
printk(KERN_EMERG "elr: \t0x%08lx cause: 0x%08lx user_mode: %d\n",
|
||||
pt_elr(regs), pt_cause(regs), user_mode(regs));
|
||||
printk(KERN_EMERG "psp: \t0x%08lx badva: 0x%08lx int_enabled: %d\n",
|
||||
pt_psp(regs), pt_badva(regs), ints_enabled(regs));
|
||||
}
|
||||
|
||||
void dummy_handler(struct pt_regs *regs)
|
||||
{
|
||||
unsigned int elr = pt_elr(regs);
|
||||
printk(KERN_ERR "Unimplemented handler; ELR=0x%08x\n", elr);
|
||||
}
|
||||
|
||||
|
||||
void arch_do_IRQ(struct pt_regs *regs)
|
||||
{
|
||||
int irq = pt_cause(regs);
|
||||
struct pt_regs *old_regs = set_irq_regs(regs);
|
||||
|
||||
irq_enter();
|
||||
generic_handle_irq(irq);
|
||||
irq_exit();
|
||||
set_irq_regs(old_regs);
|
||||
}
|
||||
442
arch/hexagon/kernel/vm_init_segtable.S
Normal file
442
arch/hexagon/kernel/vm_init_segtable.S
Normal file
@ -0,0 +1,442 @@
|
||||
/*
|
||||
* Initial page table for Linux kernel under Hexagon VM,
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
/*
|
||||
* These tables are pre-computed and linked into kernel.
|
||||
*/
|
||||
|
||||
#include <asm/vm_mmu.h>
|
||||
/* #include <asm/iomap.h> */
|
||||
|
||||
/*
|
||||
* Start with mapping PA=0 to both VA=0x0 and VA=0xc000000 as 16MB large pages.
|
||||
* No user mode access, RWX, write-back cache. The entry needs
|
||||
* to be replicated for all 4 virtual segments mapping to the page.
|
||||
*/
|
||||
|
||||
/* "Big Kernel Page" */
|
||||
#define BKP(pa) (((pa) & __HVM_PTE_PGMASK_4MB) \
|
||||
| __HVM_PTE_R | __HVM_PTE_W | __HVM_PTE_X \
|
||||
| __HEXAGON_C_WB_L2 << 6 \
|
||||
| __HVM_PDE_S_16MB)
|
||||
|
||||
/* No cache version */
|
||||
|
||||
#define BKPG_IO(pa) (((pa) & __HVM_PTE_PGMASK_16MB) \
|
||||
| __HVM_PTE_R | __HVM_PTE_W | __HVM_PTE_X \
|
||||
| __HVM_PDE_S_16MB | __HEXAGON_C_DEV << 6 )
|
||||
|
||||
#define FOURK_IO(pa) (((pa) & __HVM_PTE_PGMASK_4KB) \
|
||||
| __HVM_PTE_R | __HVM_PTE_W | __HVM_PTE_X \
|
||||
| __HEXAGON_C_DEV << 6 )
|
||||
|
||||
#define L2_PTR(pa) (((pa) & __HVM_PTE_PGMASK_4KB) \
|
||||
| __HVM_PDE_S_4KB )
|
||||
|
||||
#define X __HVM_PDE_S_INVALID
|
||||
|
||||
.p2align 12
|
||||
.globl swapper_pg_dir
|
||||
.globl _K_init_segtable
|
||||
swapper_pg_dir:
|
||||
/* VA 0x00000000 */
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
|
||||
.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
|
||||
.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
|
||||
.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
|
||||
.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
|
||||
.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
|
||||
.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
|
||||
.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
|
||||
/* VA 0x40000000 */
|
||||
.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
|
||||
.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
|
||||
.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
|
||||
.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
|
||||
.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
|
||||
.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
|
||||
.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
|
||||
.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
|
||||
/* VA 0x80000000 */
|
||||
.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
|
||||
.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
|
||||
.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
|
||||
.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
|
||||
.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
|
||||
/*0xa8*/.word X,X,X,X
|
||||
#ifdef CONFIG_COMET_EARLY_UART_DEBUG
|
||||
UART_PTE_ENTRY:
|
||||
/*0xa9*/.word BKPG_IO(0xa9000000),BKPG_IO(0xa9000000),BKPG_IO(0xa9000000),BKPG_IO(0xa9000000)
|
||||
#else
|
||||
/*0xa9*/.word X,X,X,X
|
||||
#endif
|
||||
/*0xaa*/.word X,X,X,X
|
||||
/*0xab*/.word X,X,X,X
|
||||
/*0xac*/.word X,X,X,X
|
||||
/*0xad*/.word X,X,X,X
|
||||
/*0xae*/.word X,X,X,X
|
||||
/*0xaf*/.word X,X,X,X
|
||||
/*0xb0*/.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
|
||||
.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
|
||||
_K_init_segtable:
|
||||
/* VA 0xC0000000 */
|
||||
.word BKP(0x00000000), BKP(0x00400000), BKP(0x00800000), BKP(0x00c00000)
|
||||
.word BKP(0x01000000), BKP(0x01400000), BKP(0x01800000), BKP(0x01c00000)
|
||||
.word BKP(0x02000000), BKP(0x02400000), BKP(0x02800000), BKP(0x02c00000)
|
||||
.word BKP(0x03000000), BKP(0x03400000), BKP(0x03800000), BKP(0x03c00000)
|
||||
.word BKP(0x04000000), BKP(0x04400000), BKP(0x04800000), BKP(0x04c00000)
|
||||
.word BKP(0x05000000), BKP(0x05400000), BKP(0x05800000), BKP(0x05c00000)
|
||||
.word BKP(0x06000000), BKP(0x06400000), BKP(0x06800000), BKP(0x06c00000)
|
||||
.word BKP(0x07000000), BKP(0x07400000), BKP(0x07800000), BKP(0x07c00000)
|
||||
|
||||
.word BKP(0x08000000), BKP(0x08400000), BKP(0x08800000), BKP(0x08c00000)
|
||||
.word BKP(0x09000000), BKP(0x09400000), BKP(0x09800000), BKP(0x09c00000)
|
||||
.word BKP(0x0a000000), BKP(0x0a400000), BKP(0x0a800000), BKP(0x0ac00000)
|
||||
.word BKP(0x0b000000), BKP(0x0b400000), BKP(0x0b800000), BKP(0x0bc00000)
|
||||
.word BKP(0x0c000000), BKP(0x0c400000), BKP(0x0c800000), BKP(0x0cc00000)
|
||||
.word BKP(0x0d000000), BKP(0x0d400000), BKP(0x0d800000), BKP(0x0dc00000)
|
||||
.word BKP(0x0e000000), BKP(0x0e400000), BKP(0x0e800000), BKP(0x0ec00000)
|
||||
.word BKP(0x0f000000), BKP(0x0f400000), BKP(0x0f800000), BKP(0x0fc00000)
|
||||
|
||||
.word BKP(0x10000000), BKP(0x10400000), BKP(0x10800000), BKP(0x10c00000)
|
||||
.word BKP(0x11000000), BKP(0x11400000), BKP(0x11800000), BKP(0x11c00000)
|
||||
.word BKP(0x12000000), BKP(0x12400000), BKP(0x12800000), BKP(0x12c00000)
|
||||
.word BKP(0x13000000), BKP(0x13400000), BKP(0x13800000), BKP(0x13c00000)
|
||||
.word BKP(0x14000000), BKP(0x14400000), BKP(0x14800000), BKP(0x14c00000)
|
||||
.word BKP(0x15000000), BKP(0x15400000), BKP(0x15800000), BKP(0x15c00000)
|
||||
.word BKP(0x16000000), BKP(0x16400000), BKP(0x16800000), BKP(0x16c00000)
|
||||
.word BKP(0x17000000), BKP(0x17400000), BKP(0x17800000), BKP(0x17c00000)
|
||||
|
||||
.word BKP(0x18000000), BKP(0x18400000), BKP(0x18800000), BKP(0x18c00000)
|
||||
.word BKP(0x19000000), BKP(0x19400000), BKP(0x19800000), BKP(0x19c00000)
|
||||
.word BKP(0x1a000000), BKP(0x1a400000), BKP(0x1a800000), BKP(0x1ac00000)
|
||||
.word BKP(0x1b000000), BKP(0x1b400000), BKP(0x1b800000), BKP(0x1bc00000)
|
||||
.word BKP(0x1c000000), BKP(0x1c400000), BKP(0x1c800000), BKP(0x1cc00000)
|
||||
.word BKP(0x1d000000), BKP(0x1d400000), BKP(0x1d800000), BKP(0x1dc00000)
|
||||
.word BKP(0x1e000000), BKP(0x1e400000), BKP(0x1e800000), BKP(0x1ec00000)
|
||||
.word BKP(0x1f000000), BKP(0x1f400000), BKP(0x1f800000), BKP(0x1fc00000)
|
||||
|
||||
.word BKP(0x20000000), BKP(0x20400000), BKP(0x20800000), BKP(0x20c00000)
|
||||
.word BKP(0x21000000), BKP(0x21400000), BKP(0x21800000), BKP(0x21c00000)
|
||||
.word BKP(0x22000000), BKP(0x22400000), BKP(0x22800000), BKP(0x22c00000)
|
||||
.word BKP(0x23000000), BKP(0x23400000), BKP(0x23800000), BKP(0x23c00000)
|
||||
.word BKP(0x24000000), BKP(0x24400000), BKP(0x24800000), BKP(0x24c00000)
|
||||
.word BKP(0x25000000), BKP(0x25400000), BKP(0x25800000), BKP(0x25c00000)
|
||||
.word BKP(0x26000000), BKP(0x26400000), BKP(0x26800000), BKP(0x26c00000)
|
||||
.word BKP(0x27000000), BKP(0x27400000), BKP(0x27800000), BKP(0x27c00000)
|
||||
|
||||
.word BKP(0x28000000), BKP(0x28400000), BKP(0x28800000), BKP(0x28c00000)
|
||||
.word BKP(0x29000000), BKP(0x29400000), BKP(0x29800000), BKP(0x29c00000)
|
||||
.word BKP(0x2a000000), BKP(0x2a400000), BKP(0x2a800000), BKP(0x2ac00000)
|
||||
.word BKP(0x2b000000), BKP(0x2b400000), BKP(0x2b800000), BKP(0x2bc00000)
|
||||
.word BKP(0x2c000000), BKP(0x2c400000), BKP(0x2c800000), BKP(0x2cc00000)
|
||||
.word BKP(0x2d000000), BKP(0x2d400000), BKP(0x2d800000), BKP(0x2dc00000)
|
||||
.word BKP(0x2e000000), BKP(0x2e400000), BKP(0x2e800000), BKP(0x2ec00000)
|
||||
.word BKP(0x2f000000), BKP(0x2f400000), BKP(0x2f800000), BKP(0x2fc00000)
|
||||
|
||||
.word BKP(0x30000000), BKP(0x30400000), BKP(0x30800000), BKP(0x30c00000)
|
||||
.word BKP(0x31000000), BKP(0x31400000), BKP(0x31800000), BKP(0x31c00000)
|
||||
.word BKP(0x32000000), BKP(0x32400000), BKP(0x32800000), BKP(0x32c00000)
|
||||
.word BKP(0x33000000), BKP(0x33400000), BKP(0x33800000), BKP(0x33c00000)
|
||||
.word BKP(0x34000000), BKP(0x34400000), BKP(0x34800000), BKP(0x34c00000)
|
||||
.word BKP(0x35000000), BKP(0x35400000), BKP(0x35800000), BKP(0x35c00000)
|
||||
.word BKP(0x36000000), BKP(0x36400000), BKP(0x36800000), BKP(0x36c00000)
|
||||
.word BKP(0x37000000), BKP(0x37400000), BKP(0x37800000), BKP(0x37c00000)
|
||||
|
||||
.word BKP(0x38000000), BKP(0x38400000), BKP(0x38800000), BKP(0x38c00000)
|
||||
.word BKP(0x39000000), BKP(0x39400000), BKP(0x39800000), BKP(0x39c00000)
|
||||
.word BKP(0x3a000000), BKP(0x3a400000), BKP(0x3a800000), BKP(0x3ac00000)
|
||||
.word BKP(0x3b000000), BKP(0x3b400000), BKP(0x3b800000), BKP(0x3bc00000)
|
||||
.word BKP(0x3c000000), BKP(0x3c400000), BKP(0x3c800000), BKP(0x3cc00000)
|
||||
.word BKP(0x3d000000), BKP(0x3d400000), BKP(0x3d800000), BKP(0x3dc00000)
|
||||
_K_io_map:
|
||||
.word X,X,X,X /* 0x3e000000 - device IO early remap */
|
||||
.word X,X,X,X /* 0x3f000000 - hypervisor space*/
|
||||
|
||||
#if 0
|
||||
/*
|
||||
* This is in here as an example for devices which need to be mapped really
|
||||
* early.
|
||||
*/
|
||||
.p2align 12
|
||||
.globl _K_io_kmap
|
||||
.globl _K_init_devicetable
|
||||
_K_init_devicetable: /* Should be 4MB worth of entries */
|
||||
.word FOURK_IO(MSM_GPIO1_PHYS),FOURK_IO(MSM_GPIO2_PHYS),FOURK_IO(MSM_SIRC_PHYS),X
|
||||
.word FOURK_IO(TLMM_GPIO1_PHYS),X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
.word X,X,X,X
|
||||
#endif
|
||||
102
arch/hexagon/kernel/vm_ops.S
Normal file
102
arch/hexagon/kernel/vm_ops.S
Normal file
@ -0,0 +1,102 @@
|
||||
/*
|
||||
* Hexagon VM instruction support
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#include <linux/linkage.h>
|
||||
#include <asm/hexagon_vm.h>
|
||||
|
||||
/*
|
||||
* C wrappers for virtual machine "instructions". These
|
||||
* could be, and perhaps some day will be, handled as in-line
|
||||
* macros, but for tracing/debugging it's handy to have
|
||||
* a single point of invocation for each of them.
|
||||
* Conveniently, they take paramters and return values
|
||||
* consistent with the ABI calling convention.
|
||||
*/
|
||||
|
||||
ENTRY(__vmrte)
|
||||
trap1(#HVM_TRAP1_VMRTE);
|
||||
jumpr R31;
|
||||
|
||||
ENTRY(__vmsetvec)
|
||||
trap1(#HVM_TRAP1_VMSETVEC);
|
||||
jumpr R31;
|
||||
|
||||
ENTRY(__vmsetie)
|
||||
trap1(#HVM_TRAP1_VMSETIE);
|
||||
jumpr R31;
|
||||
|
||||
ENTRY(__vmgetie)
|
||||
trap1(#HVM_TRAP1_VMGETIE);
|
||||
jumpr R31;
|
||||
|
||||
ENTRY(__vmintop)
|
||||
trap1(#HVM_TRAP1_VMINTOP);
|
||||
jumpr R31;
|
||||
|
||||
ENTRY(__vmclrmap)
|
||||
trap1(#HVM_TRAP1_VMCLRMAP);
|
||||
jumpr R31;
|
||||
|
||||
ENTRY(__vmnewmap)
|
||||
r1 = #VM_NEWMAP_TYPE_PGTABLES;
|
||||
trap1(#HVM_TRAP1_VMNEWMAP);
|
||||
jumpr R31;
|
||||
|
||||
ENTRY(__vmcache)
|
||||
trap1(#HVM_TRAP1_VMCACHE);
|
||||
jumpr R31;
|
||||
|
||||
ENTRY(__vmgettime)
|
||||
trap1(#HVM_TRAP1_VMGETTIME);
|
||||
jumpr R31;
|
||||
|
||||
ENTRY(__vmsettime)
|
||||
trap1(#HVM_TRAP1_VMSETTIME);
|
||||
jumpr R31;
|
||||
|
||||
ENTRY(__vmwait)
|
||||
trap1(#HVM_TRAP1_VMWAIT);
|
||||
jumpr R31;
|
||||
|
||||
ENTRY(__vmyield)
|
||||
trap1(#HVM_TRAP1_VMYIELD);
|
||||
jumpr R31;
|
||||
|
||||
ENTRY(__vmstart)
|
||||
trap1(#HVM_TRAP1_VMSTART);
|
||||
jumpr R31;
|
||||
|
||||
ENTRY(__vmstop)
|
||||
trap1(#HVM_TRAP1_VMSTOP);
|
||||
jumpr R31;
|
||||
|
||||
ENTRY(__vmvpid)
|
||||
trap1(#HVM_TRAP1_VMVPID);
|
||||
jumpr R31;
|
||||
|
||||
/* Probably not actually going to use these; see vm_entry.S */
|
||||
|
||||
ENTRY(__vmsetregs)
|
||||
trap1(#HVM_TRAP1_VMSETREGS);
|
||||
jumpr R31;
|
||||
|
||||
ENTRY(__vmgetregs)
|
||||
trap1(#HVM_TRAP1_VMGETREGS);
|
||||
jumpr R31;
|
||||
95
arch/hexagon/kernel/vm_switch.S
Normal file
95
arch/hexagon/kernel/vm_switch.S
Normal file
@ -0,0 +1,95 @@
|
||||
/*
|
||||
* Context switch support for Hexagon
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#include <asm/asm-offsets.h>
|
||||
|
||||
.text
|
||||
|
||||
/*
|
||||
* The register used as a fast-path thread information pointer
|
||||
* is determined as a kernel configuration option. If it happens
|
||||
* to be a callee-save register, we're going to be saving and
|
||||
* restoring it twice here.
|
||||
*
|
||||
* This code anticipates a revised ABI where R20-23 are added
|
||||
* to the set of callee-save registers, but this should be
|
||||
* backward compatible to legacy tools.
|
||||
*/
|
||||
|
||||
|
||||
/*
|
||||
* void switch_to(struct task_struct *prev,
|
||||
* struct task_struct *next, struct task_struct *last);
|
||||
*/
|
||||
.p2align 2
|
||||
.globl __switch_to
|
||||
.type __switch_to, @function
|
||||
|
||||
/*
|
||||
* When we exit the wormhole, we need to store the previous task
|
||||
* in the new R0's pointer. Technically it should be R2, but they should
|
||||
* be the same; seems like a legacy thing. In short, don't butcher
|
||||
* R0, let it go back out unmolested.
|
||||
*/
|
||||
|
||||
__switch_to:
|
||||
/*
|
||||
* Push callee-saves onto "prev" stack.
|
||||
* Here, we're sneaky because the LR and FP
|
||||
* storage of the thread_stack structure
|
||||
* is automagically allocated by allocframe,
|
||||
* so we pass struct size less 8.
|
||||
*/
|
||||
allocframe(#(_SWITCH_STACK_SIZE - 8));
|
||||
memd(R29+#(_SWITCH_R2726))=R27:26;
|
||||
memd(R29+#(_SWITCH_R2524))=R25:24;
|
||||
memd(R29+#(_SWITCH_R2322))=R23:22;
|
||||
memd(R29+#(_SWITCH_R2120))=R21:20;
|
||||
memd(R29+#(_SWITCH_R1918))=R19:18;
|
||||
memd(R29+#(_SWITCH_R1716))=R17:16;
|
||||
/* Stash thread_info pointer in task_struct */
|
||||
memw(R0+#_TASK_THREAD_INFO) = THREADINFO_REG;
|
||||
memw(R0 +#(_TASK_STRUCT_THREAD + _THREAD_STRUCT_SWITCH_SP)) = R29;
|
||||
/* Switch to "next" stack and restore callee saves from there */
|
||||
R29 = memw(R1 + #(_TASK_STRUCT_THREAD + _THREAD_STRUCT_SWITCH_SP));
|
||||
{
|
||||
R27:26 = memd(R29+#(_SWITCH_R2726));
|
||||
R25:24 = memd(R29+#(_SWITCH_R2524));
|
||||
}
|
||||
{
|
||||
R23:22 = memd(R29+#(_SWITCH_R2322));
|
||||
R21:20 = memd(R29+#(_SWITCH_R2120));
|
||||
}
|
||||
{
|
||||
R19:18 = memd(R29+#(_SWITCH_R1918));
|
||||
R17:16 = memd(R29+#(_SWITCH_R1716));
|
||||
}
|
||||
{
|
||||
/* THREADINFO_REG is currently one of the callee-saved regs
|
||||
* above, and so be sure to re-load it last.
|
||||
*/
|
||||
THREADINFO_REG = memw(R1 + #_TASK_THREAD_INFO);
|
||||
R31:30 = memd(R29+#_SWITCH_FP);
|
||||
}
|
||||
{
|
||||
R29 = add(R29,#_SWITCH_STACK_SIZE);
|
||||
jumpr R31;
|
||||
}
|
||||
.size __switch_to, .-__switch_to
|
||||
48
arch/hexagon/kernel/vm_vectors.S
Normal file
48
arch/hexagon/kernel/vm_vectors.S
Normal file
@ -0,0 +1,48 @@
|
||||
/*
|
||||
* Event jump tables
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#include <asm/hexagon_vm.h>
|
||||
|
||||
.text
|
||||
|
||||
/* This is registered early on to allow angel */
|
||||
.global _K_provisional_vec
|
||||
_K_provisional_vec:
|
||||
jump 1f;
|
||||
jump 1f;
|
||||
jump 1f;
|
||||
jump 1f;
|
||||
jump 1f;
|
||||
trap1(#HVM_TRAP1_VMRTE)
|
||||
jump 1f;
|
||||
jump 1f;
|
||||
|
||||
|
||||
.global _K_VM_event_vector
|
||||
_K_VM_event_vector:
|
||||
1:
|
||||
jump 1b; /* Reset */
|
||||
jump _K_enter_machcheck;
|
||||
jump _K_enter_genex;
|
||||
jump 1b; /* 3 Rsvd */
|
||||
jump 1b; /* 4 Rsvd */
|
||||
jump _K_enter_trap0;
|
||||
jump 1b; /* 6 Rsvd */
|
||||
jump _K_enter_interrupt;
|
||||
Loading…
Reference in New Issue
Block a user