118 lines
3.1 KiB
C++
118 lines
3.1 KiB
C++
/*
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* Copyright (c) 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/ahci/port.h
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* Driver for the Advanced Host Controller Interface.
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*/
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#ifndef SORTIX_DISK_AHCI_PORT_H
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#define SORTIX_DISK_AHCI_PORT_H
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#include <sys/types.h>
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#include <endian.h>
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#include <stdint.h>
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#include <sortix/kernel/addralloc.h>
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#include <sortix/kernel/harddisk.h>
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#include <sortix/kernel/ioctx.h>
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#include <sortix/kernel/kthread.h>
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namespace Sortix {
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namespace AHCI {
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struct command_header;
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struct command_table;
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struct fis;
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struct port_regs;
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struct prd;
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class HBA;
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class Port : public Harddisk
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{
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public:
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Port(HBA* hba, uint32_t port_index);
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virtual ~Port();
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public:
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virtual off_t GetSize();
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virtual blkcnt_t GetBlockCount();
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virtual blksize_t GetBlockSize();
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virtual uint16_t GetCylinderCount();
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virtual uint16_t GetHeadCount();
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virtual uint16_t GetSectorCount();
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virtual const char* GetDriver();
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virtual const char* GetModel();
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virtual const char* GetSerial();
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virtual const char* GetRevision();
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virtual const unsigned char* GetATAIdentify(size_t* size_ptr);
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virtual int sync(ioctx_t* ctx);
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virtual ssize_t pread(ioctx_t* ctx, unsigned char* buf, size_t count, off_t off);
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virtual ssize_t pwrite(ioctx_t* ctx, const unsigned char* buf, size_t count, off_t off);
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public:
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bool Initialize();
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bool FinishInitialize();
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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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bool Reset();
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void Seek(blkcnt_t block_index, size_t count);
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void CommandDMA(uint8_t cmd, size_t size, bool write);
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bool FinishTransferDMA();
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void PrepareAwaitInterrupt();
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bool AwaitInterrupt(unsigned int msescs);
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private:
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kthread_mutex_t port_lock;
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unsigned char identify_data[512];
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char serial[20 + 1];
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char revision[8 + 1];
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char model[40 + 1];
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addralloc_t control_alloc;
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addralloc_t dma_alloc;
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HBA* hba;
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volatile struct port_regs* regs;
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volatile struct command_header* clist;
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volatile struct fis* fis;
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volatile struct command_table* ctbl;
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volatile struct prd* prdt;
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addr_t control_physical_frame;
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addr_t dma_physical_frame;
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uint32_t port_index;
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bool is_control_page_mapped;
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bool is_dma_page_mapped;
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bool is_lba48;
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off_t device_size;
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blksize_t block_count;
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blkcnt_t block_size;
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uint16_t cylinder_count;
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uint16_t head_count;
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uint16_t sector_count;
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volatile bool interrupt_signaled;
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bool transfer_in_progress;
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size_t transfer_size;
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bool transfer_is_write;
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};
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} // namespace AHCI
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} // namespace Sortix
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#endif
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