diff options
Diffstat (limited to 'arch/hexagon/include/asm')
-rw-r--r-- | arch/hexagon/include/asm/hexagon_vm.h | 281 | ||||
-rw-r--r-- | arch/hexagon/include/asm/vm_mmu.h | 111 |
2 files changed, 392 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 000000000000..182cb9d54769 --- /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 diff --git a/arch/hexagon/include/asm/vm_mmu.h b/arch/hexagon/include/asm/vm_mmu.h new file mode 100644 index 000000000000..580462de5cca --- /dev/null +++ b/arch/hexagon/include/asm/vm_mmu.h @@ -0,0 +1,111 @@ +/* + * Hexagon VM page table entry definitions + * + * 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_VM_MMU_H +#define _ASM_VM_MMU_H + +/* + * Shift, mask, and other constants for the Hexagon Virtual Machine + * page tables. + * + * Virtual machine MMU allows first-level entries to either be + * single-level lookup PTEs for very large pages, or PDEs pointing + * to second-level PTEs for smaller pages. If PTE is single-level, + * the least significant bits cannot be used as software bits to encode + * virtual memory subsystem information about the page, and that state + * must be maintained in some parallel data structure. + */ + +/* S or Page Size field in PDE */ +#define __HVM_PDE_S (0x7 << 0) +#define __HVM_PDE_S_4KB 0 +#define __HVM_PDE_S_16KB 1 +#define __HVM_PDE_S_64KB 2 +#define __HVM_PDE_S_256KB 3 +#define __HVM_PDE_S_1MB 4 +#define __HVM_PDE_S_4MB 5 +#define __HVM_PDE_S_16MB 6 +#define __HVM_PDE_S_INVALID 7 + +/* Masks for L2 page table pointer, as function of page size */ +#define __HVM_PDE_PTMASK_4KB 0xfffff000 +#define __HVM_PDE_PTMASK_16KB 0xfffffc00 +#define __HVM_PDE_PTMASK_64KB 0xffffff00 +#define __HVM_PDE_PTMASK_256KB 0xffffffc0 +#define __HVM_PDE_PTMASK_1MB 0xfffffff0 + +/* + * Virtual Machine PTE Bits/Fields + */ +#define __HVM_PTE_T (1<<4) +#define __HVM_PTE_U (1<<5) +#define __HVM_PTE_C (0x7<<6) +#define __HVM_PTE_CVAL(pte) (((pte) & __HVM_PTE_C) >> 6) +#define __HVM_PTE_R (1<<9) +#define __HVM_PTE_W (1<<10) +#define __HVM_PTE_X (1<<11) + +/* + * Cache Attributes, to be shifted as necessary for virtual/physical PTEs + */ + +#define __HEXAGON_C_WB 0x0 /* Write-back, no L2 */ +#define __HEXAGON_C_WT 0x1 /* Write-through, no L2 */ +#define __HEXAGON_C_DEV 0x4 /* Device register space */ +#define __HEXAGON_C_WT_L2 0x5 /* Write-through, with L2 */ +/* this really should be #if CONFIG_HEXAGON_ARCH = 2 but that's not defined */ +#if defined(CONFIG_HEXAGON_COMET) || defined(CONFIG_QDSP6_ST1) +#define __HEXAGON_C_UNC __HEXAGON_C_DEV +#else +#define __HEXAGON_C_UNC 0x6 /* Uncached memory */ +#endif +#define __HEXAGON_C_WB_L2 0x7 /* Write-back, with L2 */ + +/* + * This can be overriden, but we're defaulting to the most aggressive + * cache policy, the better to find bugs sooner. + */ + +#define CACHE_DEFAULT __HEXAGON_C_WB_L2 + +/* Masks for physical page address, as a function of page size */ + +#define __HVM_PTE_PGMASK_4KB 0xfffff000 +#define __HVM_PTE_PGMASK_16KB 0xffffc000 +#define __HVM_PTE_PGMASK_64KB 0xffff0000 +#define __HVM_PTE_PGMASK_256KB 0xfffc0000 +#define __HVM_PTE_PGMASK_1MB 0xfff00000 + +/* Masks for single-level large page lookups */ + +#define __HVM_PTE_PGMASK_4MB 0xffc00000 +#define __HVM_PTE_PGMASK_16MB 0xff000000 + +/* + * "Big kernel page mappings" (see vm_init_segtable.S) + * are currently 16MB + */ + +#define BIG_KERNEL_PAGE_SHIFT 24 +#define BIG_KERNEL_PAGE_SIZE (1 << BIG_KERNEL_PAGE_SHIFT) + + + +#endif /* _ASM_VM_MMU_H */ |