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pcie: simplify range check
[qemu.git] / cpu-common.h
1 #ifndef CPU_COMMON_H
2 #define CPU_COMMON_H 1
3
4 /* CPU interfaces that are target indpendent.  */
5
6 #if defined(__arm__) || defined(__sparc__) || defined(__mips__) || defined(__hppa__) || defined(__ia64__)
7 #define WORDS_ALIGNED
8 #endif
9
10 #ifdef TARGET_PHYS_ADDR_BITS
11 #include "targphys.h"
12 #endif
13
14 #ifndef NEED_CPU_H
15 #include "poison.h"
16 #endif
17
18 #include "bswap.h"
19 #include "qemu-queue.h"
20
21 #if !defined(CONFIG_USER_ONLY)
22
23 /* address in the RAM (different from a physical address) */
24 typedef unsigned long ram_addr_t;
25
26 /* memory API */
27
28 typedef void CPUWriteMemoryFunc(void *opaque, target_phys_addr_t addr, uint32_t value);
29 typedef uint32_t CPUReadMemoryFunc(void *opaque, target_phys_addr_t addr);
30
31 void cpu_register_physical_memory_offset(target_phys_addr_t start_addr,
32                                          ram_addr_t size,
33                                          ram_addr_t phys_offset,
34                                          ram_addr_t region_offset);
35 static inline void cpu_register_physical_memory(target_phys_addr_t start_addr,
36                                                 ram_addr_t size,
37                                                 ram_addr_t phys_offset)
38 {
39     cpu_register_physical_memory_offset(start_addr, size, phys_offset, 0);
40 }
41
42 ram_addr_t cpu_get_physical_page_desc(target_phys_addr_t addr);
43 ram_addr_t qemu_ram_alloc(DeviceState *dev, const char *name, ram_addr_t size);
44 void qemu_ram_free(ram_addr_t addr);
45 /* This should only be used for ram local to a device.  */
46 void *qemu_get_ram_ptr(ram_addr_t addr);
47 /* This should not be used by devices.  */
48 ram_addr_t qemu_ram_addr_from_host(void *ptr);
49
50 int cpu_register_io_memory(CPUReadMemoryFunc * const *mem_read,
51                            CPUWriteMemoryFunc * const *mem_write,
52                            void *opaque);
53 void cpu_unregister_io_memory(int table_address);
54
55 void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf,
56                             int len, int is_write);
57 static inline void cpu_physical_memory_read(target_phys_addr_t addr,
58                                             uint8_t *buf, int len)
59 {
60     cpu_physical_memory_rw(addr, buf, len, 0);
61 }
62 static inline void cpu_physical_memory_write(target_phys_addr_t addr,
63                                              const uint8_t *buf, int len)
64 {
65     cpu_physical_memory_rw(addr, (uint8_t *)buf, len, 1);
66 }
67 void *cpu_physical_memory_map(target_phys_addr_t addr,
68                               target_phys_addr_t *plen,
69                               int is_write);
70 void cpu_physical_memory_unmap(void *buffer, target_phys_addr_t len,
71                                int is_write, target_phys_addr_t access_len);
72 void *cpu_register_map_client(void *opaque, void (*callback)(void *opaque));
73 void cpu_unregister_map_client(void *cookie);
74
75 struct CPUPhysMemoryClient;
76 typedef struct CPUPhysMemoryClient CPUPhysMemoryClient;
77 struct CPUPhysMemoryClient {
78     void (*set_memory)(struct CPUPhysMemoryClient *client,
79                        target_phys_addr_t start_addr,
80                        ram_addr_t size,
81                        ram_addr_t phys_offset);
82     int (*sync_dirty_bitmap)(struct CPUPhysMemoryClient *client,
83                              target_phys_addr_t start_addr,
84                              target_phys_addr_t end_addr);
85     int (*migration_log)(struct CPUPhysMemoryClient *client,
86                          int enable);
87     QLIST_ENTRY(CPUPhysMemoryClient) list;
88 };
89
90 void cpu_register_phys_memory_client(CPUPhysMemoryClient *);
91 void cpu_unregister_phys_memory_client(CPUPhysMemoryClient *);
92
93 /* Coalesced MMIO regions are areas where write operations can be reordered.
94  * This usually implies that write operations are side-effect free.  This allows
95  * batching which can make a major impact on performance when using
96  * virtualization.
97  */
98 void qemu_register_coalesced_mmio(target_phys_addr_t addr, ram_addr_t size);
99
100 void qemu_unregister_coalesced_mmio(target_phys_addr_t addr, ram_addr_t size);
101
102 void qemu_flush_coalesced_mmio_buffer(void);
103
104 uint32_t ldub_phys(target_phys_addr_t addr);
105 uint32_t lduw_phys(target_phys_addr_t addr);
106 uint32_t ldl_phys(target_phys_addr_t addr);
107 uint64_t ldq_phys(target_phys_addr_t addr);
108 void stl_phys_notdirty(target_phys_addr_t addr, uint32_t val);
109 void stq_phys_notdirty(target_phys_addr_t addr, uint64_t val);
110 void stb_phys(target_phys_addr_t addr, uint32_t val);
111 void stw_phys(target_phys_addr_t addr, uint32_t val);
112 void stl_phys(target_phys_addr_t addr, uint32_t val);
113 void stq_phys(target_phys_addr_t addr, uint64_t val);
114
115 void cpu_physical_memory_write_rom(target_phys_addr_t addr,
116                                    const uint8_t *buf, int len);
117
118 #define IO_MEM_SHIFT       3
119
120 #define IO_MEM_RAM         (0 << IO_MEM_SHIFT) /* hardcoded offset */
121 #define IO_MEM_ROM         (1 << IO_MEM_SHIFT) /* hardcoded offset */
122 #define IO_MEM_UNASSIGNED  (2 << IO_MEM_SHIFT)
123 #define IO_MEM_NOTDIRTY    (3 << IO_MEM_SHIFT)
124
125 /* Acts like a ROM when read and like a device when written.  */
126 #define IO_MEM_ROMD        (1)
127 #define IO_MEM_SUBPAGE     (2)
128
129 #endif
130
131 #endif /* !CPU_COMMON_H */
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