1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
#ifndef _PCILIB_DMA_H
#define _PCILIB_DMA_H
#define PCILIB_DMA_BUFFER_INVALID ((size_t)-1)
typedef struct {
int started;
size_t ring_size, buffer_size;
size_t ring_head, ring_tail;
} pcilib_dma_engine_status_t;
typedef enum {
PCILIB_DMA_TYPE_BLOCK,
PCILIB_DMA_TYPE_PACKET,
PCILIB_DMA_TYPE_UNKNOWN
} pcilib_dma_engine_type_t;
typedef struct {
pcilib_dma_engine_addr_t addr;
pcilib_dma_engine_type_t type;
pcilib_dma_direction_t direction;
size_t addr_bits;
const char *name;
const char *description;
} pcilib_dma_engine_description_t;
typedef struct {
int used;
int error;
int first;
int last;
size_t size;
} pcilib_dma_buffer_status_t;
/*
typedef struct {
int ignore_eop;
} pcilib_dma_parameters_t;
*/
typedef struct {
// pcilib_dma_parameters_t params;
pcilib_t *pcilib;
} pcilib_dma_context_t;
typedef struct {
pcilib_dma_context_t *(*init)(pcilib_t *ctx, const char *model, const void *arg);
void (*free)(pcilib_dma_context_t *ctx);
int (*status)(pcilib_dma_context_t *ctx, pcilib_dma_engine_t dma, pcilib_dma_engine_status_t *status, size_t n_buffers, pcilib_dma_buffer_status_t *buffers);
int (*enable_irq)(pcilib_dma_context_t *ctx, pcilib_irq_type_t irq_type, pcilib_dma_flags_t flags);
int (*disable_irq)(pcilib_dma_context_t *ctx, pcilib_dma_flags_t flags);
int (*acknowledge_irq)(pcilib_dma_context_t *ctx, pcilib_irq_type_t irq_type, pcilib_irq_source_t irq_source);
int (*start_dma)(pcilib_dma_context_t *ctx, pcilib_dma_engine_t dma, pcilib_dma_flags_t flags);
int (*stop_dma)(pcilib_dma_context_t *ctx, pcilib_dma_engine_t dma, pcilib_dma_flags_t flags);
int (*push)(pcilib_dma_context_t *ctx, pcilib_dma_engine_t dma, uintptr_t addr, size_t size, pcilib_dma_flags_t flags, pcilib_timeout_t timeout, void *buf, size_t *written);
int (*stream)(pcilib_dma_context_t *ctx, pcilib_dma_engine_t dma, uintptr_t addr, size_t size, pcilib_dma_flags_t flags, pcilib_timeout_t timeout, pcilib_dma_callback_t cb, void *cbattr);
double (*benchmark)(pcilib_dma_context_t *ctx, pcilib_dma_engine_addr_t dma, uintptr_t addr, size_t size, size_t iterations, pcilib_dma_direction_t direction);
} pcilib_dma_api_description_t;
typedef struct {
const pcilib_dma_api_description_t *api;
const pcilib_register_bank_description_t *banks;
const pcilib_register_description_t *registers;
const pcilib_dma_engine_description_t *engines;
const char *model;
const void *args;
const char *name;
const char *description;
} pcilib_dma_description_t;
const pcilib_dma_description_t *pcilib_get_dma_info(pcilib_t *ctx);
pcilib_dma_engine_t pcilib_add_dma_engine(pcilib_t *ctx, pcilib_dma_engine_description_t *desc);
int pcilib_get_dma_status(pcilib_t *ctx, pcilib_dma_engine_t dma, pcilib_dma_engine_status_t *status, size_t n_buffers, pcilib_dma_buffer_status_t *buffers);
int pcilib_init_dma(pcilib_t *ctx);
#endif /* _PCILIB_DMA_H */
|