/kernel/trunk/arch/ppc32/include/exception.h |
---|
0,0 → 1,78 |
/* |
* Copyright (C) 2006 Martin Decky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __ppc32_EXCEPTION_H__ |
#define __ppc32_EXCEPTION_H__ |
#ifndef __ppc32_TYPES_H__ |
# include <arch/types.h> |
#endif |
#include <typedefs.h> |
struct istate { |
__u32 r0; |
__u32 r2; |
__u32 r3; |
__u32 r4; |
__u32 r5; |
__u32 r6; |
__u32 r7; |
__u32 r8; |
__u32 r9; |
__u32 r10; |
__u32 r11; |
__u32 r12; |
__u32 r13; |
__u32 r14; |
__u32 r15; |
__u32 r16; |
__u32 r17; |
__u32 r18; |
__u32 r19; |
__u32 r20; |
__u32 r21; |
__u32 r22; |
__u32 r23; |
__u32 r24; |
__u32 r25; |
__u32 r26; |
__u32 r27; |
__u32 r28; |
__u32 r29; |
__u32 r30; |
__u32 r31; |
__u32 pc; |
__u32 srr1; |
__u32 lr; |
__u32 cr; |
__u32 ctr; |
__u32 xer; |
}; |
#endif |
/kernel/trunk/arch/ppc32/include/types.h |
---|
48,6 → 48,12 |
typedef __u32 __native; |
typedef __u32 pte_t; |
/** Page Table Entry. */ |
typedef struct { |
unsigned p : 1; /**< Present bit. */ |
unsigned a : 1; /**< Accessed bit. */ |
unsigned valid : 1; /**< Valid content even if not present. */ |
unsigned pfn : 20; /**< Physical frame number. */ |
} pte_t; |
#endif |
/kernel/trunk/arch/ppc32/include/mm/frame.h |
---|
30,7 → 30,7 |
#define __ppc32_FRAME_H__ |
#define FRAME_WIDTH 12 /* 4K */ |
#define FRAME_SIZE (1<<FRAME_WIDTH) |
#define FRAME_SIZE (1 << FRAME_WIDTH) |
#ifdef KERNEL |
#ifndef __ASM__ |
/kernel/trunk/arch/ppc32/include/mm/page.h |
---|
44,41 → 44,54 |
# define PA2KA(x) ((x) + 0x80000000) |
#endif |
#define PTL0_ENTRIES_ARCH 0 |
#define PTL1_ENTRIES_ARCH 0 |
#define PTL2_ENTRIES_ARCH 0 |
#define PTL3_ENTRIES_ARCH 0 |
/* |
* Implementation of generic 4-level page table interface, |
* the hardware Page Hash Table is used as cache. |
* |
* Page table layout: |
* - 32-bit virtual addressess |
* - Offset is 12 bits => pages are 4K long |
* - PTL0 has 1024 entries (10 bits) |
* - PTL1 is not used |
* - PTL2 is not used |
* - PLT3 has 1024 entries (10 bits) |
*/ |
#define PTL0_INDEX_ARCH(vaddr) 0 |
#define PTL1_INDEX_ARCH(vaddr) 0 |
#define PTL2_INDEX_ARCH(vaddr) 0 |
#define PTL3_INDEX_ARCH(vaddr) 0 |
#define PTL0_ENTRIES_ARCH 1024 |
#define PTL1_ENTRIES_ARCH 0 |
#define PTL2_ENTRIES_ARCH 0 |
#define PTL3_ENTRIES_ARCH 1024 |
#define PTL0_INDEX_ARCH(vaddr) (((vaddr) >> 22) & 0x3ff) |
#define PTL1_INDEX_ARCH(vaddr) 0 |
#define PTL2_INDEX_ARCH(vaddr) 0 |
#define PTL3_INDEX_ARCH(vaddr) (((vaddr) >> 12) & 0x3ff) |
#define SET_PTL0_ADDRESS_ARCH(ptl0) |
#define GET_PTL1_ADDRESS_ARCH(ptl0, i) ((pte_t *) 0) |
#define GET_PTL2_ADDRESS_ARCH(ptl1, i) ((pte_t *) 0) |
#define GET_PTL3_ADDRESS_ARCH(ptl2, i) ((pte_t *) 0) |
#define GET_FRAME_ADDRESS_ARCH(ptl3, i) ((pte_t *) 0) |
#define GET_PTL1_ADDRESS_ARCH(ptl0, i) (((pte_t *) (ptl0))[(i)].pfn << 12) |
#define GET_PTL2_ADDRESS_ARCH(ptl1, i) (ptl1) |
#define GET_PTL3_ADDRESS_ARCH(ptl2, i) (ptl2) |
#define GET_FRAME_ADDRESS_ARCH(ptl3, i) (((pte_t *) (ptl3))[(i)].pfn << 12) |
#define SET_PTL1_ADDRESS_ARCH(ptl0, i, a) |
#define SET_PTL1_ADDRESS_ARCH(ptl0, i, a) (((pte_t *) (ptl0))[(i)].pfn = (a) >> 12) |
#define SET_PTL2_ADDRESS_ARCH(ptl1, i, a) |
#define SET_PTL3_ADDRESS_ARCH(ptl2, i, a) |
#define SET_FRAME_ADDRESS_ARCH(ptl3, i, a) |
#define SET_FRAME_ADDRESS_ARCH(ptl3, i, a) (((pte_t *) (ptl3))[(i)].pfn = (a) >> 12) |
#define GET_PTL1_FLAGS_ARCH(ptl0, i) 0 |
#define GET_PTL2_FLAGS_ARCH(ptl1, i) 0 |
#define GET_PTL3_FLAGS_ARCH(ptl2, i) 0 |
#define GET_FRAME_FLAGS_ARCH(ptl3, i) 0 |
#define GET_PTL1_FLAGS_ARCH(ptl0, i) get_pt_flags((pte_t *) (ptl0), (index_t) (i)) |
#define GET_PTL2_FLAGS_ARCH(ptl1, i) PAGE_PRESENT |
#define GET_PTL3_FLAGS_ARCH(ptl2, i) PAGE_PRESENT |
#define GET_FRAME_FLAGS_ARCH(ptl3, i) get_pt_flags((pte_t *) (ptl3), (index_t) (i)) |
#define SET_PTL1_FLAGS_ARCH(ptl0, i, x) |
#define SET_PTL1_FLAGS_ARCH(ptl0, i, x) set_pt_flags((pte_t *) (ptl0), (index_t) (i), (x)) |
#define SET_PTL2_FLAGS_ARCH(ptl1, i, x) |
#define SET_PTL3_FLAGS_ARCH(ptl2, i, x) |
#define SET_FRAME_FLAGS_ARCH(ptl3, i, x) |
#define SET_FRAME_FLAGS_ARCH(ptl3, i, x) set_pt_flags((pte_t *) (ptl3), (index_t) (i), (x)) |
#define PTE_VALID_ARCH(p) 1 |
#define PTE_PRESENT_ARCH(p) 1 |
#define PTE_GET_FRAME_ARCH(p) 0 |
#define PTE_VALID_ARCH(pte) (*((__u32 *) (pte)) != 0) |
#define PTE_PRESENT_ARCH(pte) ((pte)->p != 0) |
#define PTE_GET_FRAME_ARCH(pte) ((pte)->pfn << 12) |
#ifndef __ASM__ |
86,6 → 99,28 |
#include <arch/mm/frame.h> |
#include <arch/types.h> |
static inline int get_pt_flags(pte_t *pt, index_t i) |
{ |
pte_t *p = &pt[i]; |
return ( |
(1 << PAGE_CACHEABLE_SHIFT) | |
((!p->p) << PAGE_PRESENT_SHIFT) | |
(1 << PAGE_USER_SHIFT) | |
(1 << PAGE_READ_SHIFT) | |
(1 << PAGE_WRITE_SHIFT) | |
(1 << PAGE_EXEC_SHIFT) |
); |
} |
static inline void set_pt_flags(pte_t *pt, index_t i, int flags) |
{ |
pte_t *p = &pt[i]; |
p->p = !(flags & PAGE_NOT_PRESENT); |
p->valid = 1; |
} |
extern void page_arch_init(void); |
#endif /* __ASM__ */ |
/kernel/trunk/arch/ppc32/include/mm/asid.h |
---|
26,13 → 26,19 |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __ppc32_ASID_H__ |
#define __ppc32_ASID_H__ |
/* |
* ia32 has no hardware support for address space identifiers. |
* This file is provided to do nop-implementation of mm/asid.h |
* interface. |
*/ |
#ifndef __ia32_ASID_H__ |
#define __ia32_ASID_H__ |
typedef int asid_t; |
#define ASID_MAX_ARCH 3 |
#define ASID_MAX_ARCH 3 |
#define asid_get() (ASID_START+1) |
#define asid_get() (ASID_START+1) |
#endif |
/kernel/trunk/arch/ppc32/include/mm/tlb.h |
---|
1,5 → 1,5 |
/* |
* Copyright (C) 2005 Jakub Jermar |
* Copyright (C) 2006 Martin Decky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
29,7 → 29,9 |
#ifndef __ppc32_TLB_H__ |
#define __ppc32_TLB_H__ |
#define tlb_arch_init() |
#define tlb_print() |
#include <arch/exception.h> |
#include <typedefs.h> |
extern void pht_refill(istate_t *istate); |
#endif |
/kernel/trunk/arch/ppc32/Makefile.inc |
---|
30,7 → 30,7 |
# |
BFD_NAME = elf32-powerpc |
BFD_ARCH = powerpc |
BFD_ARCH = powerpc:common |
BFD = binary |
TARGET = ppc-linux-gnu |
TOOLCHAIN_DIR = /usr/local/ppc/bin |
78,4 → 78,5 |
arch/$(ARCH)/src/mm/as.c \ |
arch/$(ARCH)/src/mm/frame.c \ |
arch/$(ARCH)/src/mm/memory_init.c \ |
arch/$(ARCH)/src/mm/page.c |
arch/$(ARCH)/src/mm/page.c \ |
arch/$(ARCH)/src/mm/tlb.c |
/kernel/trunk/arch/ppc32/src/exception.S |
---|
31,59 → 31,7 |
.section K_UNMAPPED_TEXT_START, "ax" |
.org 0x100 |
.global exc_system_reset |
exc_system_reset: |
b exc_system_reset |
.org 0x200 |
.global exc_machine_check |
exc_machine_check: |
b exc_machine_check |
.org 0x300 |
.global exc_data_storage |
exc_data_storage: |
b exc_data_storage |
.org 0x380 |
.global exc_data_segment |
exc_data_segment: |
b exc_data_segment |
.org 0x400 |
.global exc_instruction_storage |
exc_instruction_storage: |
b exc_instruction_storage |
.org 0x480 |
.global exc_instruction_segment |
exc_instruction_segment: |
b exc_instruction_segment |
.org 0x500 |
.global exc_external |
exc_external: |
b exc_external |
.org 0x600 |
.global exc_alignment |
exc_alignment: |
b exc_alignment |
.org 0x700 |
.global exc_program |
exc_program: |
b exc_program |
.org 0x800 |
.global exc_fp_unavailable |
exc_fp_unavailable: |
b exc_fp_unavailable |
.org 0x900 |
.global exc_decrementer |
exc_decrementer: |
.macro CONTEXT_STORE |
mtspr sprg1, sp |
subis sp, sp, 0x8000 |
138,7 → 86,73 |
mfxer r3 |
stw r3, 144(sp) |
.endm |
.org 0x100 |
.global exc_system_reset |
exc_system_reset: |
b exc_system_reset |
.org 0x200 |
.global exc_machine_check |
exc_machine_check: |
b exc_machine_check |
.org 0x300 |
.global exc_data_storage |
exc_data_storage: |
CONTEXT_STORE |
lis r3, pht_refill@ha |
addi r3, r3, pht_refill@l |
mtspr srr0, r3 |
mfmsr r3 |
ori r3, r3, (msr_ir | msr_dr)@l |
mtspr srr1, r3 |
lis r3, iret@ha |
addi r3, r3, iret@l |
mtlr r3 |
addis sp, sp, 0x8000 |
rfi |
.org 0x400 |
.global exc_instruction_storage |
exc_instruction_storage: |
b exc_instruction_storage |
.org 0x480 |
.global exc_instruction_segment |
exc_instruction_segment: |
b exc_instruction_segment |
.org 0x500 |
.global exc_external |
exc_external: |
b exc_external |
.org 0x600 |
.global exc_alignment |
exc_alignment: |
b exc_alignment |
.org 0x700 |
.global exc_program |
exc_program: |
b exc_program |
.org 0x800 |
.global exc_fp_unavailable |
exc_fp_unavailable: |
b exc_fp_unavailable |
.org 0x900 |
.global exc_decrementer |
exc_decrementer: |
CONTEXT_STORE |
lis r3, exc_dispatch@ha |
addi r3, r3, exc_dispatch@l |
mtspr srr0, r3 |
/kernel/trunk/arch/ppc32/src/mm/tlb.c |
---|
0,0 → 1,155 |
/* |
* Copyright (C) 2006 Martin Decky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#include <arch/mm/tlb.h> |
#include <arch/types.h> |
#include <mm/tlb.h> |
#include <mm/page.h> |
#include <mm/as.h> |
#include <arch.h> |
#include <print.h> |
#include <symtab.h> |
/** Initialize Page Hash Table. |
* |
* Setup the Page Hash Table with no entries. |
* |
*/ |
void tlb_arch_init(void) |
{ |
} |
/** Try to find PTE for faulting address |
* |
* Try to find PTE for faulting address. |
* The AS->lock must be held on entry to this function. |
* |
* @param badvaddr Faulting virtual address. |
* @return PTE on success, NULL otherwise. |
* |
*/ |
static pte_t *find_mapping_and_check(__address badvaddr) |
{ |
/* |
* Check if the mapping exists in page tables. |
*/ |
pte_t *pte = page_mapping_find(AS, badvaddr); |
if ((pte) && (pte->p)) { |
/* |
* Mapping found in page tables. |
* Immediately succeed. |
*/ |
return pte; |
} else { |
/* |
* Mapping not found in page tables. |
* Resort to higher-level page fault handler. |
*/ |
page_table_unlock(AS, true); |
if (as_page_fault(badvaddr)) { |
/* |
* The higher-level page fault handler succeeded, |
* The mapping ought to be in place. |
*/ |
page_table_lock(AS, true); |
pte = page_mapping_find(AS, badvaddr); |
ASSERT((pte) && (pte->p)); |
return pte; |
} else { |
page_table_lock(AS, true); |
printf("Page fault.\n"); |
return NULL; |
} |
} |
} |
static void pht_refill_fail(__address badvaddr, istate_t *istate) |
{ |
char *symbol = ""; |
char *sym2 = ""; |
char *s = get_symtab_entry(istate->pc); |
if (s) |
symbol = s; |
s = get_symtab_entry(istate->lr); |
if (s) |
sym2 = s; |
panic("%X: PHT Refill Exception at %X(%s<-%s)\n", badvaddr, istate->pc, symbol, sym2); |
} |
/** Process Data Storage Interrupt |
* |
* @param istate Interrupted register context. |
* |
*/ |
void pht_refill(istate_t *istate) |
{ |
asid_t asid; |
__address badvaddr; |
pte_t *pte; |
__asm__ volatile ( |
"mfdar %0\n" |
: "=r" (badvaddr) |
); |
spinlock_lock(&AS->lock); |
asid = AS->asid; |
spinlock_unlock(&AS->lock); |
page_table_lock(AS, true); |
pte = find_mapping_and_check(badvaddr); |
if (!pte) |
goto fail; |
/* |
* Record access to PTE. |
*/ |
pte->a = 1; |
// FIXME: Insert entry into PHT |
page_table_unlock(AS, true); |
return; |
fail: |
page_table_unlock(AS, true); |
pht_refill_fail(badvaddr, istate); |
} |
/** Print contents of Page Hash Table. */ |
void tlb_print(void) |
{ |
} |
/kernel/trunk/arch/ppc64/Makefile.inc |
---|
30,10 → 30,10 |
# |
BFD_NAME = elf64-powerpc |
BFD_ARCH = powerpc |
BFD_ARCH = powerpc:common64 |
BFD = binary |
TARGET = ppc-linux-gnu |
TOOLCHAIN_DIR = /usr/local/ppc/bin |
TARGET = ppc64-linux-gnu |
TOOLCHAIN_DIR = /usr/local/ppc64/bin |
## Make some default assumptions |
# |