99 lines
2.2 KiB
C++
99 lines
2.2 KiB
C++
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2011, 2012, 2013, 2014, 2015, 2016.
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This file is part of Sortix.
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Sortix is free software: you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later
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version.
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Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along with
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Sortix. If not, see <http://www.gnu.org/licenses/>.
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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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