diff options
Diffstat (limited to 'exec.c')
| -rw-r--r-- | exec.c | 174 |
1 files changed, 107 insertions, 67 deletions
@@ -187,7 +187,6 @@ uintptr_t qemu_host_page_mask; static void *l1_map[V_L1_SIZE]; #if !defined(CONFIG_USER_ONLY) -typedef struct PhysPageEntry PhysPageEntry; static MemoryRegionSection *phys_sections; static unsigned phys_sections_nb, phys_sections_nb_alloc; @@ -196,22 +195,12 @@ static uint16_t phys_section_notdirty; static uint16_t phys_section_rom; static uint16_t phys_section_watch; -struct PhysPageEntry { - uint16_t is_leaf : 1; - /* index into phys_sections (is_leaf) or phys_map_nodes (!is_leaf) */ - uint16_t ptr : 15; -}; - /* Simple allocator for PhysPageEntry nodes */ static PhysPageEntry (*phys_map_nodes)[L2_SIZE]; static unsigned phys_map_nodes_nb, phys_map_nodes_nb_alloc; #define PHYS_MAP_NODE_NIL (((uint16_t)~0) >> 1) -/* This is a multi-level map on the physical address space. - The bottom level has pointers to MemoryRegionSections. */ -static PhysPageEntry phys_map = { .ptr = PHYS_MAP_NODE_NIL, .is_leaf = 0 }; - static void io_mem_init(void); static void memory_map_init(void); @@ -459,18 +448,19 @@ static void phys_page_set_level(PhysPageEntry *lp, target_phys_addr_t *index, } } -static void phys_page_set(target_phys_addr_t index, target_phys_addr_t nb, +static void phys_page_set(AddressSpaceDispatch *d, + target_phys_addr_t index, target_phys_addr_t nb, uint16_t leaf) { /* Wildly overreserve - it doesn't matter much. */ phys_map_node_reserve(3 * P_L2_LEVELS); - phys_page_set_level(&phys_map, &index, &nb, leaf, P_L2_LEVELS - 1); + phys_page_set_level(&d->phys_map, &index, &nb, leaf, P_L2_LEVELS - 1); } -MemoryRegionSection *phys_page_find(target_phys_addr_t index) +MemoryRegionSection *phys_page_find(AddressSpaceDispatch *d, target_phys_addr_t index) { - PhysPageEntry lp = phys_map; + PhysPageEntry lp = d->phys_map; PhysPageEntry *p; int i; uint16_t s_index = phys_section_unassigned; @@ -1472,7 +1462,7 @@ void tb_invalidate_phys_addr(target_phys_addr_t addr) ram_addr_t ram_addr; MemoryRegionSection *section; - section = phys_page_find(addr >> TARGET_PAGE_BITS); + section = phys_page_find(address_space_memory.dispatch, addr >> TARGET_PAGE_BITS); if (!(memory_region_is_ram(section->mr) || (section->mr->rom_device && section->mr->readable))) { return; @@ -2210,9 +2200,9 @@ static void destroy_l2_mapping(PhysPageEntry *lp, unsigned level) lp->ptr = PHYS_MAP_NODE_NIL; } -static void destroy_all_mappings(void) +static void destroy_all_mappings(AddressSpaceDispatch *d) { - destroy_l2_mapping(&phys_map, P_L2_LEVELS - 1); + destroy_l2_mapping(&d->phys_map, P_L2_LEVELS - 1); phys_map_nodes_reset(); } @@ -2232,12 +2222,12 @@ static void phys_sections_clear(void) phys_sections_nb = 0; } -static void register_subpage(MemoryRegionSection *section) +static void register_subpage(AddressSpaceDispatch *d, MemoryRegionSection *section) { subpage_t *subpage; target_phys_addr_t base = section->offset_within_address_space & TARGET_PAGE_MASK; - MemoryRegionSection *existing = phys_page_find(base >> TARGET_PAGE_BITS); + MemoryRegionSection *existing = phys_page_find(d, base >> TARGET_PAGE_BITS); MemoryRegionSection subsection = { .offset_within_address_space = base, .size = TARGET_PAGE_SIZE, @@ -2249,7 +2239,7 @@ static void register_subpage(MemoryRegionSection *section) if (!(existing->mr->subpage)) { subpage = subpage_init(base); subsection.mr = &subpage->iomem; - phys_page_set(base >> TARGET_PAGE_BITS, 1, + phys_page_set(d, base >> TARGET_PAGE_BITS, 1, phys_section_add(&subsection)); } else { subpage = container_of(existing->mr, subpage_t, iomem); @@ -2260,7 +2250,7 @@ static void register_subpage(MemoryRegionSection *section) } -static void register_multipage(MemoryRegionSection *section) +static void register_multipage(AddressSpaceDispatch *d, MemoryRegionSection *section) { target_phys_addr_t start_addr = section->offset_within_address_space; ram_addr_t size = section->size; @@ -2270,13 +2260,13 @@ static void register_multipage(MemoryRegionSection *section) assert(size); addr = start_addr; - phys_page_set(addr >> TARGET_PAGE_BITS, size >> TARGET_PAGE_BITS, + phys_page_set(d, addr >> TARGET_PAGE_BITS, size >> TARGET_PAGE_BITS, section_index); } -void cpu_register_physical_memory_log(MemoryRegionSection *section, - bool readonly) +static void mem_add(MemoryListener *listener, MemoryRegionSection *section) { + AddressSpaceDispatch *d = container_of(listener, AddressSpaceDispatch, listener); MemoryRegionSection now = *section, remain = *section; if ((now.offset_within_address_space & ~TARGET_PAGE_MASK) @@ -2284,7 +2274,7 @@ void cpu_register_physical_memory_log(MemoryRegionSection *section, now.size = MIN(TARGET_PAGE_ALIGN(now.offset_within_address_space) - now.offset_within_address_space, now.size); - register_subpage(&now); + register_subpage(d, &now); remain.size -= now.size; remain.offset_within_address_space += now.size; remain.offset_within_region += now.size; @@ -2293,10 +2283,10 @@ void cpu_register_physical_memory_log(MemoryRegionSection *section, now = remain; if (remain.offset_within_region & ~TARGET_PAGE_MASK) { now.size = TARGET_PAGE_SIZE; - register_subpage(&now); + register_subpage(d, &now); } else { now.size &= TARGET_PAGE_MASK; - register_multipage(&now); + register_multipage(d, &now); } remain.size -= now.size; remain.offset_within_address_space += now.size; @@ -2304,7 +2294,7 @@ void cpu_register_physical_memory_log(MemoryRegionSection *section, } now = remain; if (now.size) { - register_subpage(&now); + register_subpage(d, &now); } } @@ -3155,11 +3145,17 @@ static void io_mem_init(void) "watch", UINT64_MAX); } +static void mem_begin(MemoryListener *listener) +{ + AddressSpaceDispatch *d = container_of(listener, AddressSpaceDispatch, listener); + + destroy_all_mappings(d); + d->phys_map.ptr = PHYS_MAP_NODE_NIL; +} + static void core_begin(MemoryListener *listener) { - destroy_all_mappings(); phys_sections_clear(); - phys_map.ptr = PHYS_MAP_NODE_NIL; phys_section_unassigned = dummy_section(&io_mem_unassigned); phys_section_notdirty = dummy_section(&io_mem_notdirty); phys_section_rom = dummy_section(&io_mem_rom); @@ -3178,18 +3174,6 @@ static void tcg_commit(MemoryListener *listener) } } -static void core_region_add(MemoryListener *listener, - MemoryRegionSection *section) -{ - cpu_register_physical_memory_log(section, section->readonly); -} - -static void core_region_nop(MemoryListener *listener, - MemoryRegionSection *section) -{ - cpu_register_physical_memory_log(section, section->readonly); -} - static void core_log_global_start(MemoryListener *listener) { cpu_physical_memory_set_dirty_tracking(1); @@ -3220,11 +3204,9 @@ static void io_region_del(MemoryListener *listener, static MemoryListener core_memory_listener = { .begin = core_begin, - .region_add = core_region_add, - .region_nop = core_region_nop, .log_global_start = core_log_global_start, .log_global_stop = core_log_global_stop, - .priority = 0, + .priority = 1, }; static MemoryListener io_memory_listener = { @@ -3237,6 +3219,21 @@ static MemoryListener tcg_memory_listener = { .commit = tcg_commit, }; +void address_space_init_dispatch(AddressSpace *as) +{ + AddressSpaceDispatch *d = g_new(AddressSpaceDispatch, 1); + + d->phys_map = (PhysPageEntry) { .ptr = PHYS_MAP_NODE_NIL, .is_leaf = 0 }; + d->listener = (MemoryListener) { + .begin = mem_begin, + .region_add = mem_add, + .region_nop = mem_add, + .priority = 0, + }; + as->dispatch = d; + memory_listener_register(&d->listener, as); +} + static void memory_map_init(void) { system_memory = g_malloc(sizeof(*system_memory)); @@ -3321,9 +3318,10 @@ static void invalidate_and_set_dirty(target_phys_addr_t addr, xen_modified_memory(addr, length); } -void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf, - int len, int is_write) +void address_space_rw(AddressSpace *as, target_phys_addr_t addr, uint8_t *buf, + int len, bool is_write) { + AddressSpaceDispatch *d = as->dispatch; int l; uint8_t *ptr; uint32_t val; @@ -3335,7 +3333,7 @@ void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf, l = (page + TARGET_PAGE_SIZE) - addr; if (l > len) l = len; - section = phys_page_find(page >> TARGET_PAGE_BITS); + section = phys_page_find(d, page >> TARGET_PAGE_BITS); if (is_write) { if (!memory_region_is_ram(section->mr)) { @@ -3406,10 +3404,36 @@ void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf, } } +void address_space_write(AddressSpace *as, target_phys_addr_t addr, + const uint8_t *buf, int len) +{ + address_space_rw(as, addr, (uint8_t *)buf, len, true); +} + +/** + * address_space_read: read from an address space. + * + * @as: #AddressSpace to be accessed + * @addr: address within that address space + * @buf: buffer with the data transferred + */ +void address_space_read(AddressSpace *as, target_phys_addr_t addr, uint8_t *buf, int len) +{ + address_space_rw(as, addr, buf, len, false); +} + + +void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf, + int len, int is_write) +{ + return address_space_rw(&address_space_memory, addr, buf, len, is_write); +} + /* used for ROM loading : can write in RAM and ROM */ void cpu_physical_memory_write_rom(target_phys_addr_t addr, const uint8_t *buf, int len) { + AddressSpaceDispatch *d = address_space_memory.dispatch; int l; uint8_t *ptr; target_phys_addr_t page; @@ -3420,7 +3444,7 @@ void cpu_physical_memory_write_rom(target_phys_addr_t addr, l = (page + TARGET_PAGE_SIZE) - addr; if (l > len) l = len; - section = phys_page_find(page >> TARGET_PAGE_BITS); + section = phys_page_find(d, page >> TARGET_PAGE_BITS); if (!(memory_region_is_ram(section->mr) || memory_region_is_romd(section->mr))) { @@ -3494,10 +3518,12 @@ static void cpu_notify_map_clients(void) * Use cpu_register_map_client() to know when retrying the map operation is * likely to succeed. */ -void *cpu_physical_memory_map(target_phys_addr_t addr, - target_phys_addr_t *plen, - int is_write) +void *address_space_map(AddressSpace *as, + target_phys_addr_t addr, + target_phys_addr_t *plen, + bool is_write) { + AddressSpaceDispatch *d = as->dispatch; target_phys_addr_t len = *plen; target_phys_addr_t todo = 0; int l; @@ -3512,7 +3538,7 @@ void *cpu_physical_memory_map(target_phys_addr_t addr, l = (page + TARGET_PAGE_SIZE) - addr; if (l > len) l = len; - section = phys_page_find(page >> TARGET_PAGE_BITS); + section = phys_page_find(d, page >> TARGET_PAGE_BITS); if (!(memory_region_is_ram(section->mr) && !section->readonly)) { if (todo || bounce.buffer) { @@ -3522,7 +3548,7 @@ void *cpu_physical_memory_map(target_phys_addr_t addr, bounce.addr = addr; bounce.len = l; if (!is_write) { - cpu_physical_memory_read(addr, bounce.buffer, l); + address_space_read(as, addr, bounce.buffer, l); } *plen = l; @@ -3543,12 +3569,12 @@ void *cpu_physical_memory_map(target_phys_addr_t addr, return ret; } -/* Unmaps a memory region previously mapped by cpu_physical_memory_map(). +/* Unmaps a memory region previously mapped by address_space_map(). * Will also mark the memory as dirty if is_write == 1. access_len gives * the amount of memory that was actually read or written by the caller. */ -void cpu_physical_memory_unmap(void *buffer, target_phys_addr_t len, - int is_write, target_phys_addr_t access_len) +void address_space_unmap(AddressSpace *as, void *buffer, target_phys_addr_t len, + int is_write, target_phys_addr_t access_len) { if (buffer != bounce.buffer) { if (is_write) { @@ -3569,13 +3595,26 @@ void cpu_physical_memory_unmap(void *buffer, target_phys_addr_t len, return; } if (is_write) { - cpu_physical_memory_write(bounce.addr, bounce.buffer, access_len); + address_space_write(as, bounce.addr, bounce.buffer, access_len); } qemu_vfree(bounce.buffer); bounce.buffer = NULL; cpu_notify_map_clients(); } +void *cpu_physical_memory_map(target_phys_addr_t addr, + target_phys_addr_t *plen, + int is_write) +{ + return address_space_map(&address_space_memory, addr, plen, is_write); +} + +void cpu_physical_memory_unmap(void *buffer, target_phys_addr_t len, + int is_write, target_phys_addr_t access_len) +{ + return address_space_unmap(&address_space_memory, buffer, len, is_write, access_len); +} + /* warning: addr must be aligned */ static inline uint32_t ldl_phys_internal(target_phys_addr_t addr, enum device_endian endian) @@ -3584,7 +3623,7 @@ static inline uint32_t ldl_phys_internal(target_phys_addr_t addr, uint32_t val; MemoryRegionSection *section; - section = phys_page_find(addr >> TARGET_PAGE_BITS); + section = phys_page_find(address_space_memory.dispatch, addr >> TARGET_PAGE_BITS); if (!(memory_region_is_ram(section->mr) || memory_region_is_romd(section->mr))) { @@ -3643,7 +3682,7 @@ static inline uint64_t ldq_phys_internal(target_phys_addr_t addr, uint64_t val; MemoryRegionSection *section; - section = phys_page_find(addr >> TARGET_PAGE_BITS); + section = phys_page_find(address_space_memory.dispatch, addr >> TARGET_PAGE_BITS); if (!(memory_region_is_ram(section->mr) || memory_region_is_romd(section->mr))) { @@ -3710,7 +3749,7 @@ static inline uint32_t lduw_phys_internal(target_phys_addr_t addr, uint64_t val; MemoryRegionSection *section; - section = phys_page_find(addr >> TARGET_PAGE_BITS); + section = phys_page_find(address_space_memory.dispatch, addr >> TARGET_PAGE_BITS); if (!(memory_region_is_ram(section->mr) || memory_region_is_romd(section->mr))) { @@ -3769,7 +3808,7 @@ void stl_phys_notdirty(target_phys_addr_t addr, uint32_t val) uint8_t *ptr; MemoryRegionSection *section; - section = phys_page_find(addr >> TARGET_PAGE_BITS); + section = phys_page_find(address_space_memory.dispatch, addr >> TARGET_PAGE_BITS); if (!memory_region_is_ram(section->mr) || section->readonly) { addr = memory_region_section_addr(section, addr); @@ -3801,7 +3840,7 @@ void stq_phys_notdirty(target_phys_addr_t addr, uint64_t val) uint8_t *ptr; MemoryRegionSection *section; - section = phys_page_find(addr >> TARGET_PAGE_BITS); + section = phys_page_find(address_space_memory.dispatch, addr >> TARGET_PAGE_BITS); if (!memory_region_is_ram(section->mr) || section->readonly) { addr = memory_region_section_addr(section, addr); @@ -3830,7 +3869,7 @@ static inline void stl_phys_internal(target_phys_addr_t addr, uint32_t val, uint8_t *ptr; MemoryRegionSection *section; - section = phys_page_find(addr >> TARGET_PAGE_BITS); + section = phys_page_find(address_space_memory.dispatch, addr >> TARGET_PAGE_BITS); if (!memory_region_is_ram(section->mr) || section->readonly) { addr = memory_region_section_addr(section, addr); @@ -3897,7 +3936,7 @@ static inline void stw_phys_internal(target_phys_addr_t addr, uint32_t val, uint8_t *ptr; MemoryRegionSection *section; - section = phys_page_find(addr >> TARGET_PAGE_BITS); + section = phys_page_find(address_space_memory.dispatch, addr >> TARGET_PAGE_BITS); if (!memory_region_is_ram(section->mr) || section->readonly) { addr = memory_region_section_addr(section, addr); @@ -4133,7 +4172,8 @@ bool cpu_physical_memory_is_io(target_phys_addr_t phys_addr) { MemoryRegionSection *section; - section = phys_page_find(phys_addr >> TARGET_PAGE_BITS); + section = phys_page_find(address_space_memory.dispatch, + phys_addr >> TARGET_PAGE_BITS); return !(memory_region_is_ram(section->mr) || memory_region_is_romd(section->mr)); |