ata.h

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#ifndef H_ATA
#define H_ATA
 
#include <xetypes.h>
 
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
 
#define XENON_ATA_REG_DATA      0
#define XENON_ATA_REG_ERROR     1
#define XENON_ATA_REG_FEATURES  1
#define XENON_ATA_REG_SECTORS   2
#define XENON_ATA_REG_SECTNUM   3
#define XENON_ATA_REG_CYLLSB    4
#define XENON_ATA_REG_CYLMSB    5
#define XENON_ATA_REG_LBALOW    3
#define XENON_ATA_REG_LBAMID    4
#define XENON_ATA_REG_LBAHIGH   5
#define XENON_ATA_REG_DISK      6
#define XENON_ATA_REG_CMD       7
#define XENON_ATA_REG_STATUS    7
 
#define XENON_ATA_REG2_CONTROL   0
 
#include "disc_io.h"
 
    enum xenon_ata_commands {
        XENON_ATA_CMD_READ_SECTORS = 0x20,
        XENON_ATA_CMD_READ_SECTORS_EXT = 0x24,
        XENON_ATA_CMD_READ_DMA_EXT = 0x25,
        XENON_ATA_CMD_WRITE_SECTORS = 0x30,
        XENON_ATA_CMD_WRITE_SECTORS_EXT = 0x34,
        XENON_ATA_CMD_IDENTIFY_DEVICE = 0xEC,
        XENON_ATA_CMD_IDENTIFY_PACKET_DEVICE = 0xA1,
        XENON_ATA_CMD_PACKET = 0xA0,
        XENON_ATA_CMD_SET_FEATURES = 0xEF,
    };
 
    enum {
        XENON_ATA_CHS = 0,
        XENON_ATA_LBA,
        XENON_ATA_LBA48
    };
 
#define XENON_DISK_SECTOR_SIZE 0x200
#define XENON_CDROM_SECTOR_SIZE 2048
 
    enum {
        XENON_ATA_DMA_TABLE_OFS = 4,
        XENON_ATA_DMA_STATUS = 2,
        XENON_ATA_DMA_CMD = 0,
        XENON_ATA_DMA_WR = (1 << 3),
        XENON_ATA_DMA_START = (1 << 0),
        XENON_ATA_DMA_INTR = (1 << 2),
        XENON_ATA_DMA_ERR = (1 << 1),
        XENON_ATA_DMA_ACTIVE = (1 << 0),
    };
 
#define MAX_PRDS 16
 
    struct xenon_ata_dma_prd {
        uint32_t address;
        uint32_t size_flags;
    } __attribute__((packed));
 
    struct xenon_ata_device {
        uint32_t ioaddress;
        uint32_t ioaddress2;
 
        int atapi;
 
        int addressing_mode;
 
        uint16_t cylinders;
        uint16_t heads;
        uint16_t sectors_per_track;
 
        uint32_t size;
        struct bdev *bdev;
 
        struct xenon_ata_dma_prd * prds;
    };
 
    struct xenon_atapi_read {
        uint8_t code;
        uint8_t reserved1;
        uint32_t lba;
        uint8_t reserved2;
        uint16_t length;
        uint8_t reserved3[3];
    } __attribute__((packed));
 
    int xenon_ata_init();
    int xenon_atapi_init();
    void xenon_atapi_set_modeb(void);
    int xenon_atapi_get_dvd_key_tsh943a(unsigned char *dvdkey);
    int xenon_atapi_set_dvd_key(unsigned char *dvdkey);
    
    extern struct xenon_ata_device ata;
    extern struct xenon_ata_device atapi;
 
#ifdef __cplusplus
}
#endif /* __cplusplus */
 
#endif