| 1 | #ifndef HW_I8257_H |
| 2 | #define HW_I8257_H |
| 3 | |
| 4 | #include "hw/isa/isa.h" |
| 5 | #include "system/ioport.h" |
| 6 | #include "qom/object.h" |
| 7 | |
| 8 | #define TYPE_I8257 "i8257" |
| 9 | OBJECT_DECLARE_SIMPLE_TYPE(I8257State, I8257) |
| 10 | |
| 11 | typedef struct I8257Regs { |
| 12 | int now[2]; |
| 13 | uint16_t base[2]; |
| 14 | uint8_t mode; |
| 15 | uint8_t page; |
| 16 | uint8_t pageh; |
| 17 | uint8_t dack; |
| 18 | uint8_t eop; |
| 19 | IsaDmaTransferHandler transfer_handler; |
| 20 | void *opaque; |
| 21 | } I8257Regs; |
| 22 | |
| 23 | struct I8257State { |
| 24 | /* <private> */ |
| 25 | ISADevice parent_obj; |
| 26 | |
| 27 | /* <public> */ |
| 28 | int32_t base; |
| 29 | int32_t page_base; |
| 30 | int32_t pageh_base; |
| 31 | int32_t dshift; |
| 32 | |
| 33 | uint8_t status; |
| 34 | uint8_t command; |
| 35 | uint8_t mask; |
| 36 | uint8_t flip_flop; |
| 37 | I8257Regs regs[4]; |
| 38 | MemoryRegion channel_io; |
| 39 | MemoryRegion cont_io; |
| 40 | |
| 41 | QEMUBH *dma_bh; |
| 42 | bool dma_bh_scheduled; |
| 43 | int running; |
| 44 | PortioList portio_page; |
| 45 | PortioList portio_pageh; |
| 46 | }; |
| 47 | |
| 48 | void i8257_dma_init(Object *parent, ISABus *bus, bool high_page_enable); |
| 49 | |
| 50 | #endif |