94 lines
2.1 KiB
C++
94 lines
2.1 KiB
C++
/*
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* Copyright (c) 2011, 2012, 2013, 2014, 2015, 2016 Jonas 'Sortie' Termansen.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* disk/ata/hba.h
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* Driver for ATA.
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*/
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#ifndef SORTIX_DISK_ATA_HBA_H
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#define SORTIX_DISK_ATA_HBA_H
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#include <stdint.h>
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#include <sortix/kernel/descriptor.h>
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#include <sortix/kernel/interrupt.h>
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#include <sortix/kernel/kthread.h>
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namespace Sortix {
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namespace ATA {
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class HBA;
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class Port;
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class Channel
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{
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friend class Port;
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friend class HBA;
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public:
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Channel();
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~Channel();
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public:
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bool Initialize(Ref<Descriptor> dev, const char* devpath);
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void OnInterrupt();
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private:
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__attribute__((format(printf, 2, 3)))
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void LogF(const char* format, ...);
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void SelectDrive(unsigned int drive_index);
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private:
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struct interrupt_handler interrupt_registration;
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kthread_mutex_t hw_lock;
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uint32_t devaddr;
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HBA* hba;
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unsigned int channel_index;
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unsigned int current_drive;
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uint16_t port_base;
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uint16_t port_control;
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uint16_t busmaster_base;
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Port* drives[2];
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unsigned int interrupt_index;
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bool interrupt_registered;
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};
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class HBA
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{
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friend class Port;
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public:
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HBA(uint32_t devaddr);
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~HBA();
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public:
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bool Initialize(Ref<Descriptor> dev, const char* devpath);
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private:
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bool InitializeChannel(Ref<Descriptor> dev, const char* devpath,
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unsigned int channel_index);
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private:
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uint32_t devaddr;
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Channel channels[2];
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};
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} // namespace ATA
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} // namespace Sortix
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#endif
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