Rewrite header ISA.h
partially fixes #1576 Change-Id: I245f55ab466222279e74df7f206a609d3b913ed5 Reviewed-on: https://review.haiku-os.org/c/haiku/+/6298 Reviewed-by: Fredrik Holmqvist <[email protected]>
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wszdexdrf
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Fredrik Holmqvist
Fredrik Holmqvist
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0ec55fb069
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@@ -1,83 +1,77 @@
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/*******************************************************************************
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/*
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/
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* Copyright 2023, Haiku Inc. All Rights Reserved.
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/ File: ISA.h
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* Distributed under the terms of the MIT License.
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/
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*/
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/ Description: Interface to ISA module
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/
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/ Copyright 1998, Be Incorporated, All Rights Reserved.
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/
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*******************************************************************************/
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#ifndef _ISA_H
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#ifndef ISA_H
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#define _ISA_H
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#define ISA_H
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//#include <SupportDefs.h>
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#include <bus_manager.h>
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#include <bus_manager.h>
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#ifdef __cplusplus
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#ifdef __cplusplus
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extern "C" {
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extern "C" {
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#endif
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#endif
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/* ---
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/*
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ISA scatter/gather dma support.
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* ISA scatter/gather dma support.
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--- */
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*/
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typedef struct {
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typedef struct {
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ulong address; /* memory address (little endian!) 4 bytes */
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uint32 address; // memory address in little endian
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ushort transfer_count; /* # transfers minus one (little endian!) 2 bytes*/
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uint16 transfer_count; // number of transfers -1 in little endian
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uchar reserved; /* filler, 1byte*/
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uint8 reserved; // empty space
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uchar flag; /* end of link flag, 1byte */
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uint8 flag; // end of link flag
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} isa_dma_entry;
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} isa_dma_entry;
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#define B_LAST_ISA_DMA_ENTRY 0x80 /* sets end of link flag in isa_dma_entry */
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#define B_LAST_ISA_DMA_ENTRY 0x80 // sets end of link flag
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#define B_MAX_ISA_DMA_COUNT 0x10000
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#define B_ISA_MODULE_NAME "bus_managers/isa/v1"
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enum {
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enum {
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B_8_BIT_TRANSFER,
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B_8_BIT_TRANSFER,
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B_16_BIT_TRANSFER
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B_16_BIT_TRANSFER
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};
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};
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#define B_MAX_ISA_DMA_COUNT 0x10000
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typedef struct isa_module_info {
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typedef struct isa_module_info {
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bus_manager_info binfo;
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bus_manager_info binfo;
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uint8 (*read_io_8) (int mapped_io_addr);
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uint8 (*read_io_8) (int mapped_io_addr);
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void (*write_io_8) (int mapped_io_addr, uint8 value);
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void (*write_io_8) (int mapped_io_addr, uint8 value);
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uint16 (*read_io_16) (int mapped_io_addr);
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uint16 (*read_io_16) (int mapped_io_addr);
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void (*write_io_16) (int mapped_io_addr, uint16 value);
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void (*write_io_16) (int mapped_io_addr, uint16 value);
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uint32 (*read_io_32) (int mapped_io_addr);
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uint32 (*read_io_32) (int mapped_io_addr);
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void (*write_io_32) (int mapped_io_addr, uint32 value);
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void (*write_io_32) (int mapped_io_addr, uint32 value);
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phys_addr_t (*ram_address) (phys_addr_t physical_address_in_system_memory);
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phys_addr_t (*ram_address) (phys_addr_t physical_address_in_system_memory);
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long (*make_isa_dma_table) (
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long (*make_isa_dma_table) (
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const void *buffer, /* buffer to make a table for */
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const void *buffer, // buffer for making table
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long buffer_size, /* buffer size */
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long buffer_size, // size of the buffer
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ulong num_bits, /* dma transfer size that will be used */
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ulong num_bits, // dma transfer size
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isa_dma_entry *table, /* -> caller-supplied scatter/gather table */
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isa_dma_entry *table, // -> caller-supplied
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long num_entries /* max # entries in table */
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// scatter/gather table
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long num_entries // max # of entries in table
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);
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);
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status_t (*start_isa_dma) (
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status_t (*start_isa_dma) (
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long channel, /* dma channel to use */
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long channel, // dma channel to use
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void *buf, /* buffer to transfer */
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void *buf, // buffer to transfer
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long transfer_count, /* # transfers */
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long transfer_count, // number of transfers
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uchar mode, /* mode flags */
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uchar mode, // mode flags
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uchar e_mode /* extended mode flags */
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uchar e_mode // extended mode flags
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);
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);
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long (*start_scattered_isa_dma) (
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long (*start_scattered_isa_dma) (
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long channel, /* channel # to use */
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long channel, // channel number to use
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const isa_dma_entry *table, /* physical address of scatter/gather table */
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const isa_dma_entry *table, // physical address of
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uchar mode, /* mode flags */
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// scatter/gather table
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uchar emode /* extended mode flags */
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uchar mode, // mode flags
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uchar emode // extended mode flags
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);
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);
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status_t (*lock_isa_dma_channel) (long channel);
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status_t (*lock_isa_dma_channel) (long channel);
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status_t (*unlock_isa_dma_channel) (long channel);
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status_t (*unlock_isa_dma_channel) (long channel);
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} isa_module_info;
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} isa_module_info;
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#define B_ISA_MODULE_NAME "bus_managers/isa/v1"
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#ifdef __cplusplus
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#ifdef __cplusplus
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}
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}
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#endif
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#endif
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#endif /* _ISA_H */
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#endif /* ISA_H */
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