0daa3f2af3
license stuff in it :-). Some cleanup on the other headers. git-svn-id: file:///srv/svn/repos/haiku/trunk/current@638 a95241bf-73f2-0310-859d-f6bbb57e9c96
85 lines
2.4 KiB
C
85 lines
2.4 KiB
C
/*******************************************************************************
|
|
/
|
|
/ File: ISA.h
|
|
/
|
|
/ Description: Interface to ISA module
|
|
/
|
|
/ Copyright 1998, Be Incorporated, All Rights Reserved.
|
|
/
|
|
*******************************************************************************/
|
|
|
|
#ifndef _ISA_H
|
|
#define _ISA_H
|
|
|
|
//#include <SupportDefs.h>
|
|
#include <bus_manager.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* ---
|
|
ISA scatter/gather dma support.
|
|
--- */
|
|
|
|
typedef struct {
|
|
ulong address; /* memory address (little endian!) 4 bytes */
|
|
ushort transfer_count; /* # transfers minus one (little endian!) 2 bytes*/
|
|
uchar reserved; /* filler, 1byte*/
|
|
uchar flag; /* end of link flag, 1byte */
|
|
} isa_dma_entry;
|
|
|
|
#define B_LAST_ISA_DMA_ENTRY 0x80 /* sets end of link flag in isa_dma_entry */
|
|
|
|
enum {
|
|
B_8_BIT_TRANSFER,
|
|
B_16_BIT_TRANSFER
|
|
};
|
|
|
|
#define B_MAX_ISA_DMA_COUNT 0x10000
|
|
|
|
typedef struct isa_module_info isa_module_info;
|
|
struct isa_module_info {
|
|
bus_manager_info binfo;
|
|
|
|
uint8 (*read_io_8) (int mapped_io_addr);
|
|
void (*write_io_8) (int mapped_io_addr, uint8 value);
|
|
uint16 (*read_io_16) (int mapped_io_addr);
|
|
void (*write_io_16) (int mapped_io_addr, uint16 value);
|
|
uint32 (*read_io_32) (int mapped_io_addr);
|
|
void (*write_io_32) (int mapped_io_addr, uint32 value);
|
|
|
|
void * (*ram_address) (const void *physical_address_in_system_memory);
|
|
|
|
long (*make_isa_dma_table) (
|
|
const void *buffer, /* buffer to make a table for */
|
|
long buffer_size, /* buffer size */
|
|
ulong num_bits, /* dma transfer size that will be used */
|
|
isa_dma_entry *table, /* -> caller-supplied scatter/gather table */
|
|
long num_entries /* max # entries in table */
|
|
);
|
|
long (*start_isa_dma) (
|
|
long channel, /* dma channel to use */
|
|
void *buf, /* buffer to transfer */
|
|
long transfer_count, /* # transfers */
|
|
uchar mode, /* mode flags */
|
|
uchar e_mode /* extended mode flags */
|
|
);
|
|
long (*start_scattered_isa_dma) (
|
|
long channel, /* channel # to use */
|
|
const isa_dma_entry *table, /* physical address of scatter/gather table */
|
|
uchar mode, /* mode flags */
|
|
uchar emode /* extended mode flags */
|
|
);
|
|
long (*lock_isa_dma_channel) (long channel);
|
|
long (*unlock_isa_dma_channel) (long channel);
|
|
};
|
|
|
|
#define B_ISA_MODULE_NAME "bus_managers/isa/v1"
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _ISA_H */
|