blob: f652345d65a27d4b802af39ad74818c34f03e376 (
plain)
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
|
#ifndef HW_I8257_H
#define HW_I8257_H
#include "hw/isa/isa.h"
#include "exec/ioport.h"
#include "qom/object.h"
#define TYPE_I8257 "i8257"
OBJECT_DECLARE_SIMPLE_TYPE(I8257State, I8257)
typedef struct I8257Regs {
int now[2];
uint16_t base[2];
uint8_t mode;
uint8_t page;
uint8_t pageh;
uint8_t dack;
uint8_t eop;
IsaDmaTransferHandler transfer_handler;
void *opaque;
} I8257Regs;
struct I8257State {
/* <private> */
ISADevice parent_obj;
/* <public> */
int32_t base;
int32_t page_base;
int32_t pageh_base;
int32_t dshift;
uint8_t status;
uint8_t command;
uint8_t mask;
uint8_t flip_flop;
I8257Regs regs[4];
MemoryRegion channel_io;
MemoryRegion cont_io;
QEMUBH *dma_bh;
bool dma_bh_scheduled;
int running;
PortioList portio_page;
PortioList portio_pageh;
};
void i8257_dma_init(ISABus *bus, bool high_page_enable);
#endif
|
