72 lines
2.2 KiB
C
72 lines
2.2 KiB
C
/*
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* Copyright 2002-2003, Thomas Kurschel. All rights reserved.
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* Copyright 2003-2009, Haiku, Inc. All rights reserved.
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* Distributed under the terms of the MIT License.
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*/
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#ifndef __ATA_H__
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#define __ATA_H__
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#include <device_manager.h>
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#include <KernelExport.h>
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// Controller Driver Node
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// attributes:
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// node type
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#define ATA_BUS_TYPE_NAME "bus/ata/v1"
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// maximum number of devices connected to controller (uint8, optional, default:2)
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#define ATA_CONTROLLER_MAX_DEVICES_ITEM "ata/max_devices"
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// set to not-0 if DMA is supported (uint8, optional, default:0)
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#define ATA_CONTROLLER_CAN_DMA_ITEM "ata/can_DMA"
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// name of controller (string, required)
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#define ATA_CONTROLLER_CONTROLLER_NAME_ITEM "ata/controller_name"
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union ata_task_file;
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typedef unsigned int ata_reg_mask;
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// channel cookie, issued by ata bus manager
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typedef void* ata_channel;
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// interface of controller driver
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typedef struct {
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driver_module_info info;
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void (*set_channel)(void *cookie, ata_channel channel);
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status_t (*write_command_block_regs)(void *channelCookie,
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union ata_task_file *file, ata_reg_mask mask);
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status_t (*read_command_block_regs)(void *channelCookie,
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union ata_task_file *file, ata_reg_mask mask);
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uint8 (*get_altstatus)(void *channelCookie);
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status_t (*write_device_control)(void *channelCookie, uint8 val);
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status_t (*write_pio)(void *channelCookie, uint16 *data, int count,
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bool force16Bit);
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status_t (*read_pio)(void *channelCookie, uint16 *data, int count,
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bool force16Bit);
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status_t (*prepare_dma)(void *channelCookie, const physical_entry *sg_list,
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size_t sg_list_count, bool write);
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status_t (*start_dma)(void *channelCookie);
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status_t (*finish_dma)(void *channelCookie);
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} ata_controller_interface;
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// Interface for Controller Driver
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// interface of bus manager as seen from controller driver
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// use this interface as the fixed consumer of your controller driver
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typedef struct {
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driver_module_info info;
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// status - status read from controller (_not_ alt_status, as reading
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// normal status acknowledges IRQ request of device)
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status_t (*interrupt_handler)(ata_channel channel, uint8 status);
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} ata_for_controller_interface;
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#define ATA_FOR_CONTROLLER_MODULE_NAME "bus_managers/ata/controller/driver_v1"
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#endif /* __ATA_H__ */
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