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FreeNOS
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The ATA (Advanced Technology Attachment) driver provides a block I/O storage device. More...
Data Structures | |
| struct | IdentifyData |
| IDENTIFY data presentation. More... | |
| struct | ATADrive |
| Represents a Drive on the ATA bus. More... | |
| class | ATAController |
| AT Attachment (ATA) Host Controller Device. More... | |
Macros | |
| #define | IDENTIFY_TEXT_SWAP(field, size) |
| Swap ASCII bytes from IDENTIFY. More... | |
Typedefs | |
| typedef struct IdentifyData | IdentifyData |
| IDENTIFY data presentation. More... | |
| typedef struct ATADrive | ATADrive |
| Represents a Drive on the ATA bus. More... | |
ATA I/O Bases. | |
| #define | ATA_BASE_CMD0 0x1f0 |
| First ATA Bus Command I/O Base. More... | |
| #define | ATA_BASE_CMD1 0x170 |
| Second ATA Bus Command I/O Base. More... | |
| #define | ATA_BASE_CTL0 0x3f6 |
| First ATA Bus Control I/O Base. More... | |
| #define | ATA_BASE_CTL1 0x376 |
| Second ATA Bus Control I/O Base. More... | |
ATA Command Registers. | |
| #define | ATA_REG_DATA 0 |
| Data port. More... | |
| #define | ATA_REG_ERROR 1 |
| Features and Error info. More... | |
| #define | ATA_REG_COUNT 2 |
| Sector Count. More... | |
| #define | ATA_REG_ADDR0 3 |
| Partial Disk Sector address. More... | |
| #define | ATA_REG_ADDR1 4 |
| Partial Disk Sector address. More... | |
| #define | ATA_REG_ADDR2 5 |
| Partial Disk Sector address. More... | |
| #define | ATA_REG_SELECT 6 |
| Drive Select bit, Flag bits, Extra address bits. More... | |
| #define | ATA_REG_CMD 7 |
| Command port and Regular Status port. More... | |
| #define | ATA_REG_STATUS 7 |
| Regular Status port. More... | |
ATA Status Registers. | |
| #define | ATA_STATUS_ERROR 0x01 |
| Error flag (when set). More... | |
| #define | ATA_STATUS_DATA 0x08 |
| Drive data ready for transfer. More... | |
| #define | ATA_STATUS_BUSY 0x80 |
| Drive is preparing to accept or send data. More... | |
ATA Control Registers. | |
| #define | ATA_REG_RESET 0x4 |
| Software Reset. More... | |
| #define | ATA_REG_INTR 0x2 |
| Interrupt Disable. More... | |
ATA Device Selector Flags. | |
| #define | ATA_SEL_MASTER 0xa0 |
| Master Drive in Legacy mode. More... | |
| #define | ATA_SEL_MASTER_28 0xe0 |
| Master Drive in 28-bit LBA mode. More... | |
| #define | ATA_SEL_MASTER_48 0x40 |
| Master Drive in 48-bit LBA mode. More... | |
ATA Commands. | |
| #define | ATA_CMD_IDENTIFY 0xec |
| Identifies an ATA device, if any. More... | |
| #define | ATA_CMD_READ 0x20 |
| Reads sectors from an ATA device. More... | |
The ATA (Advanced Technology Attachment) driver provides a block I/O storage device.
| #define ATA_BASE_CMD0 0x1f0 |
First ATA Bus Command I/O Base.
Definition at line 39 of file ATAController.h.
| #define ATA_BASE_CMD1 0x170 |
Second ATA Bus Command I/O Base.
Definition at line 42 of file ATAController.h.
| #define ATA_BASE_CTL0 0x3f6 |
First ATA Bus Control I/O Base.
Definition at line 45 of file ATAController.h.
| #define ATA_BASE_CTL1 0x376 |
Second ATA Bus Control I/O Base.
Definition at line 48 of file ATAController.h.
| #define ATA_CMD_IDENTIFY 0xec |
Identifies an ATA device, if any.
Definition at line 190 of file ATAController.h.
| #define ATA_CMD_READ 0x20 |
Reads sectors from an ATA device.
Definition at line 193 of file ATAController.h.
| #define ATA_REG_ADDR0 3 |
Partial Disk Sector address.
This register is CHS, LBA28 and LBA48 specific.
Definition at line 82 of file ATAController.h.
| #define ATA_REG_ADDR1 4 |
Partial Disk Sector address.
Definition at line 87 of file ATAController.h.
| #define ATA_REG_ADDR2 5 |
Partial Disk Sector address.
Definition at line 92 of file ATAController.h.
| #define ATA_REG_CMD 7 |
Command port and Regular Status port.
Used to write commands and read status.
Definition at line 103 of file ATAController.h.
| #define ATA_REG_COUNT 2 |
Sector Count.
Number of sectors to read or write (0 = special value).
Definition at line 76 of file ATAController.h.
| #define ATA_REG_DATA 0 |
Data port.
Read and write PIO data bytes on this port.
Definition at line 64 of file ATAController.h.
| #define ATA_REG_ERROR 1 |
| #define ATA_REG_INTR 0x2 |
Interrupt Disable.
Set this to stop the current device from sending interrupts.
Definition at line 160 of file ATAController.h.
| #define ATA_REG_RESET 0x4 |
Software Reset.
Set this to reset all ATA drives on a bus, if one is misbehaving.
Definition at line 154 of file ATAController.h.
| #define ATA_REG_SELECT 6 |
Drive Select bit, Flag bits, Extra address bits.
Definition at line 97 of file ATAController.h.
| #define ATA_REG_STATUS 7 |
Regular Status port.
This is the same register as the command register.
Definition at line 110 of file ATAController.h.
| #define ATA_SEL_MASTER 0xa0 |
Master Drive in Legacy mode.
Definition at line 172 of file ATAController.h.
| #define ATA_SEL_MASTER_28 0xe0 |
Master Drive in 28-bit LBA mode.
Definition at line 175 of file ATAController.h.
| #define ATA_SEL_MASTER_48 0x40 |
Master Drive in 48-bit LBA mode.
Definition at line 178 of file ATAController.h.
| #define ATA_STATUS_BUSY 0x80 |
Drive is preparing to accept or send data.
Wait until this bit clears. If it never clears, do a Software Reset. Technically, when BSY is set, the other bits in the Status bytes are meaningless.
Definition at line 138 of file ATAController.h.
| #define ATA_STATUS_DATA 0x08 |
Drive data ready for transfer.
Set when the drive has PIO data to transfer, or is ready to accept PIO data.
Definition at line 131 of file ATAController.h.
| #define ATA_STATUS_ERROR 0x01 |
Error flag (when set).
Send a new command to clear it (or nuke it with a Software Reset).
Definition at line 125 of file ATAController.h.
| #define IDENTIFY_TEXT_SWAP | ( | field, | |
| size | |||
| ) |
Swap ASCII bytes from IDENTIFY.
This macro is needed to swap ASCII bytes in the IDENTIFY result buffer, because IDENTIFY returns 256 little-endian words.
Definition at line 206 of file ATAController.h.
| typedef struct IdentifyData IdentifyData |
IDENTIFY data presentation.
1.8.17