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virtio: fix up VQ checks
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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_from_ptr(DeviceState *dev, const char *name,
44                         ram_addr_t size, void *host);
45 ram_addr_t qemu_ram_alloc(DeviceState *dev, const char *name, ram_addr_t size);
46 void qemu_ram_free(ram_addr_t addr);
47 /* This should only be used for ram local to a device.  */
48 void *qemu_get_ram_ptr(ram_addr_t addr);
49 /* This should not be used by devices.  */
50 int qemu_ram_addr_from_host(void *ptr, ram_addr_t *ram_addr);
51 ram_addr_t qemu_ram_addr_from_host_nofail(void *ptr);
52
53 int cpu_register_io_memory(CPUReadMemoryFunc * const *mem_read,
54                            CPUWriteMemoryFunc * const *mem_write,
55                            void *opaque);
56 void cpu_unregister_io_memory(int table_address);
57
58 void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf,
59                             int len, int is_write);
60 static inline void cpu_physical_memory_read(target_phys_addr_t addr,
61                                             uint8_t *buf, int len)
62 {
63     cpu_physical_memory_rw(addr, buf, len, 0);
64 }
65 static inline void cpu_physical_memory_write(target_phys_addr_t addr,
66                                              const uint8_t *buf, int len)
67 {
68     cpu_physical_memory_rw(addr, (uint8_t *)buf, len, 1);
69 }
70 void *cpu_physical_memory_map(target_phys_addr_t addr,
71                               target_phys_addr_t *plen,
72                               int is_write);
73 void cpu_physical_memory_unmap(void *buffer, target_phys_addr_t len,
74                                int is_write, target_phys_addr_t access_len);
75 void *cpu_register_map_client(void *opaque, void (*callback)(void *opaque));
76 void cpu_unregister_map_client(void *cookie);
77
78 struct CPUPhysMemoryClient;
79 typedef struct CPUPhysMemoryClient CPUPhysMemoryClient;
80 struct CPUPhysMemoryClient {
81     void (*set_memory)(struct CPUPhysMemoryClient *client,
82                        target_phys_addr_t start_addr,
83                        ram_addr_t size,
84                        ram_addr_t phys_offset);
85     int (*sync_dirty_bitmap)(struct CPUPhysMemoryClient *client,
86                              target_phys_addr_t start_addr,
87                              target_phys_addr_t end_addr);
88     int (*migration_log)(struct CPUPhysMemoryClient *client,
89                          int enable);
90     QLIST_ENTRY(CPUPhysMemoryClient) list;
91 };
92
93 void cpu_register_phys_memory_client(CPUPhysMemoryClient *);
94 void cpu_unregister_phys_memory_client(CPUPhysMemoryClient *);
95
96 /* Coalesced MMIO regions are areas where write operations can be reordered.
97  * This usually implies that write operations are side-effect free.  This allows
98  * batching which can make a major impact on performance when using
99  * virtualization.
100  */
101 void qemu_register_coalesced_mmio(target_phys_addr_t addr, ram_addr_t size);
102
103 void qemu_unregister_coalesced_mmio(target_phys_addr_t addr, ram_addr_t size);
104
105 void qemu_flush_coalesced_mmio_buffer(void);
106
107 uint32_t ldub_phys(target_phys_addr_t addr);
108 uint32_t lduw_phys(target_phys_addr_t addr);
109 uint32_t ldl_phys(target_phys_addr_t addr);
110 uint64_t ldq_phys(target_phys_addr_t addr);
111 void stl_phys_notdirty(target_phys_addr_t addr, uint32_t val);
112 void stq_phys_notdirty(target_phys_addr_t addr, uint64_t val);
113 void stb_phys(target_phys_addr_t addr, uint32_t val);
114 void stw_phys(target_phys_addr_t addr, uint32_t val);
115 void stl_phys(target_phys_addr_t addr, uint32_t val);
116 void stq_phys(target_phys_addr_t addr, uint64_t val);
117
118 void cpu_physical_memory_write_rom(target_phys_addr_t addr,
119                                    const uint8_t *buf, int len);
120
121 #define IO_MEM_SHIFT       3
122
123 #define IO_MEM_RAM         (0 << IO_MEM_SHIFT) /* hardcoded offset */
124 #define IO_MEM_ROM         (1 << IO_MEM_SHIFT) /* hardcoded offset */
125 #define IO_MEM_UNASSIGNED  (2 << IO_MEM_SHIFT)
126 #define IO_MEM_NOTDIRTY    (3 << IO_MEM_SHIFT)
127
128 /* Acts like a ROM when read and like a device when written.  */
129 #define IO_MEM_ROMD        (1)
130 #define IO_MEM_SUBPAGE     (2)
131
132 #endif
133
134 #endif /* !CPU_COMMON_H */
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