Device model for an IDE disk. More...

#include "base/statistics.hh"
#include "dev/io_device.hh"
#include "dev/storage/disk_image.hh"
#include "dev/storage/ide_atareg.h"
#include "dev/storage/ide_ctrl.hh"
#include "dev/storage/ide_wdcreg.h"
#include "params/IdeDisk.hh"
#include "sim/eventq.hh"

Classes
struct	PrdEntry

class	PrdTableEntry

struct	CommandReg

class	IdeDisk
	IDE Disk device model. More...

Macros
#define	DMA_BACKOFF_PERIOD 200

#define	MAX_DMA_SIZE 0x20000

#define	MAX_SINGLE_DMA_SIZE 0x10000

#define	MAX_MULTSECT (128)

#define	PRD_BASE_MASK 0xfffffffe

#define	PRD_COUNT_MASK 0xfffe

#define	PRD_EOT_MASK 0x8000

#define	DATA_OFFSET (0)

#define	ERROR_OFFSET (1)

#define	FEATURES_OFFSET (1)

#define	NSECTOR_OFFSET (2)

#define	SECTOR_OFFSET (3)

#define	LCYL_OFFSET (4)

#define	HCYL_OFFSET (5)

#define	SELECT_OFFSET (6)

#define	DRIVE_OFFSET (6)

#define	STATUS_OFFSET (7)

#define	COMMAND_OFFSET (7)

#define	CONTROL_OFFSET (2)

#define	ALTSTAT_OFFSET (2)

#define	SELECT_DEV_BIT 0x10

#define	CONTROL_RST_BIT 0x04

#define	CONTROL_IEN_BIT 0x02

#define	STATUS_BSY_BIT 0x80

#define	STATUS_DRDY_BIT 0x40

#define	STATUS_DRQ_BIT 0x08

#define	STATUS_SEEK_BIT 0x10

#define	STATUS_DF_BIT 0x20

#define	DRIVE_LBA_BIT 0x40

#define	DEV0 (0)

#define	DEV1 (1)

Typedefs
typedef struct PrdEntry	PrdEntry_t

typedef struct CommandReg	CommandReg_t

typedef enum Events	Events_t

typedef enum DevAction	DevAction_t

typedef enum DevState	DevState_t

typedef enum DmaState	DmaState_t

Enumerations
enum	Events { None = 0, Transfer, ReadWait, WriteWait, PrdRead, DmaRead, DmaWrite }

enum	DevAction { ACT_NONE = 0, ACT_CMD_WRITE, ACT_CMD_COMPLETE, ACT_CMD_ERROR, ACT_SELECT_WRITE, ACT_STAT_READ, ACT_DATA_READY, ACT_DATA_READ_BYTE, ACT_DATA_READ_SHORT, ACT_DATA_WRITE_BYTE, ACT_DATA_WRITE_SHORT, ACT_DMA_READY, ACT_DMA_DONE, ACT_SRST_SET, ACT_SRST_CLEAR }

enum	DevState { Device_Idle_S = 0, Device_Idle_SI, Device_Idle_NS, Device_Srst, Command_Execution, Prepare_Data_In, Data_Ready_INTRQ_In, Transfer_Data_In, Prepare_Data_Out, Data_Ready_INTRQ_Out, Transfer_Data_Out, Prepare_Data_Dma, Transfer_Data_Dma, Device_Dma_Abort }

enum	DmaState { Dma_Idle = 0, Dma_Start, Dma_Transfer }

Detailed Description

Device model for an IDE disk.

Definition in file ide_disk.hh.

Macro Definition Documentation

#define ALTSTAT_OFFSET (2)

Definition at line 111 of file ide_disk.hh.

Referenced by IdeDisk::readControl().

#define COMMAND_OFFSET (7)

Definition at line 108 of file ide_disk.hh.

Referenced by IdeDisk::writeCommand().

#define CONTROL_IEN_BIT 0x02

Definition at line 115 of file ide_disk.hh.

Referenced by IdeDisk::writeControl().

#define CONTROL_OFFSET (2)

Definition at line 110 of file ide_disk.hh.

Referenced by IdeDisk::writeControl().

#define CONTROL_RST_BIT 0x04

Definition at line 114 of file ide_disk.hh.

Referenced by IdeDisk::writeControl().

#define DATA_OFFSET (0)

Definition at line 98 of file ide_disk.hh.

Referenced by IdeDisk::readCommand(), and IdeDisk::writeCommand().

#define DEV0 (0)

Definition at line 123 of file ide_disk.hh.

Referenced by IdeDisk::reset().

#define DEV1 (1)

Definition at line 124 of file ide_disk.hh.

Referenced by IdeDisk::reset().

#define DMA_BACKOFF_PERIOD 200

Definition at line 61 of file ide_disk.hh.

Referenced by IdeDisk::doDmaRead(), IdeDisk::doDmaTransfer(), and IdeDisk::doDmaWrite().

#define DRIVE_LBA_BIT 0x40

Definition at line 121 of file ide_disk.hh.

Referenced by IdeDisk::startCommand().

#define DRIVE_OFFSET (6)

Definition at line 106 of file ide_disk.hh.

Referenced by IdeDisk::readCommand(), and IdeDisk::writeCommand().

#define ERROR_OFFSET (1)

Definition at line 99 of file ide_disk.hh.

Referenced by IdeDisk::readCommand().

#define FEATURES_OFFSET (1)

Definition at line 100 of file ide_disk.hh.

Referenced by IdeDisk::writeCommand().

#define HCYL_OFFSET (5)

Definition at line 104 of file ide_disk.hh.

Referenced by IdeDisk::readCommand(), and IdeDisk::writeCommand().

#define LCYL_OFFSET (4)

Definition at line 103 of file ide_disk.hh.

Referenced by IdeDisk::readCommand(), and IdeDisk::writeCommand().

#define MAX_DMA_SIZE 0x20000

Definition at line 63 of file ide_disk.hh.

Referenced by IdeDisk::doDmaDataWrite(), IdeDisk::doDmaRead(), IdeDisk::doDmaWrite(), IdeDisk::reset(), IdeDisk::serialize(), IdeDisk::unserialize(), and IdeDisk::updateState().

#define MAX_MULTSECT (128)

Definition at line 65 of file ide_disk.hh.

Referenced by IdeDisk::IdeDisk().

#define MAX_SINGLE_DMA_SIZE 0x10000

Definition at line 64 of file ide_disk.hh.

Referenced by PrdTableEntry::getByteCount().

#define NSECTOR_OFFSET (2)

Definition at line 101 of file ide_disk.hh.

Referenced by IdeDisk::readCommand(), and IdeDisk::writeCommand().

#define PRD_BASE_MASK 0xfffffffe

Definition at line 67 of file ide_disk.hh.

Referenced by PrdTableEntry::getBaseAddr().

#define PRD_COUNT_MASK 0xfffe

Definition at line 68 of file ide_disk.hh.

Referenced by PrdTableEntry::getByteCount().

#define PRD_EOT_MASK 0x8000

Definition at line 69 of file ide_disk.hh.

Referenced by PrdTableEntry::getEOT().

#define SECTOR_OFFSET (3)

Definition at line 102 of file ide_disk.hh.

Referenced by IdeDisk::readCommand(), and IdeDisk::writeCommand().

#define SELECT_DEV_BIT 0x10

Definition at line 113 of file ide_disk.hh.

#define SELECT_OFFSET (6)

Definition at line 105 of file ide_disk.hh.

#define STATUS_BSY_BIT 0x80

Definition at line 116 of file ide_disk.hh.

Referenced by IdeDisk::isBSYSet(), IdeDisk::startCommand(), and IdeDisk::updateState().

#define STATUS_DF_BIT 0x20

Definition at line 120 of file ide_disk.hh.

Referenced by IdeDisk::startCommand().

#define STATUS_DRDY_BIT 0x40

Definition at line 117 of file ide_disk.hh.

Referenced by IdeDisk::reset(), and IdeDisk::setComplete().

#define STATUS_DRQ_BIT 0x08

Definition at line 118 of file ide_disk.hh.

Referenced by IdeDisk::startCommand(), and IdeDisk::updateState().

#define STATUS_OFFSET (7)

Definition at line 107 of file ide_disk.hh.

Referenced by IdeDisk::readCommand().

#define STATUS_SEEK_BIT 0x10

Definition at line 119 of file ide_disk.hh.

Referenced by IdeDisk::setComplete(), and IdeDisk::updateState().

Typedef Documentation

typedef struct CommandReg CommandReg_t

typedef enum DevAction DevAction_t

typedef enum DevState DevState_t

typedef enum DmaState DmaState_t

typedef enum Events Events_t

typedef struct PrdEntry PrdEntry_t

Enumeration Type Documentation

enum DevAction

Enumerator
ACT_NONE
ACT_CMD_WRITE
ACT_CMD_COMPLETE
ACT_CMD_ERROR
ACT_SELECT_WRITE
ACT_STAT_READ
ACT_DATA_READY
ACT_DATA_READ_BYTE
ACT_DATA_READ_SHORT
ACT_DATA_WRITE_BYTE
ACT_DATA_WRITE_SHORT
ACT_DMA_READY
ACT_DMA_DONE
ACT_SRST_SET
ACT_SRST_CLEAR

Definition at line 150 of file ide_disk.hh.

enum DevState

Enumerator
Device_Idle_S
Device_Idle_SI
Device_Idle_NS
Device_Srst
Command_Execution
Prepare_Data_In
Data_Ready_INTRQ_In
Transfer_Data_In
Prepare_Data_Out
Data_Ready_INTRQ_Out
Transfer_Data_Out
Prepare_Data_Dma
Transfer_Data_Dma
Device_Dma_Abort

Definition at line 168 of file ide_disk.hh.

enum DmaState

Enumerator
Dma_Idle
Dma_Start
Dma_Transfer

Definition at line 196 of file ide_disk.hh.

enum Events

Enumerator
None
Transfer
ReadWait
WriteWait
PrdRead
DmaRead
DmaWrite

Definition at line 140 of file ide_disk.hh.

Classes

Macros

Typedefs

Enumerations

Detailed Description

Macro Definition Documentation

Typedef Documentation

Enumeration Type Documentation