diff options
Diffstat (limited to 'src/include/disk.h')
| -rw-r--r-- | src/include/disk.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/src/include/disk.h b/src/include/disk.h new file mode 100644 index 0000000..739902f --- /dev/null +++ b/src/include/disk.h @@ -0,0 +1,53 @@ +#ifndef DISK_H +#define DISK_H + +#include "dev.h" + +/* + * Structure returned from disk_probe and passed to other driver + * functions. + */ +struct disk +{ + struct dev dev; /* This must come first */ + int (*read)(struct disk *, sector_t sector); + unsigned int drive; + unsigned long hw_sector_size; /* The hardware sector size for dealing + * with partition tables and the like. + * Must be >= 512 + */ + unsigned int sectors_per_read; /* The number of 512 byte sectors + * returned by each read call. + * All I/O must be aligned to this size. + */ + unsigned int bytes; /* The number of bytes in the read buffer. */ + sector_t sectors; /* The number of sectors on the drive. */ + sector_t sector; /* The first sector in the driver buffer */ + unsigned char *buffer; /* The data read from the drive */ + void *priv; /* driver can hang private data here */ + + unsigned long disk_offset; + int direction; +}; + +extern struct disk disk; +extern int url_file(const char *name, + int (*fnc)(unsigned char *, unsigned int, unsigned int, int)); + +extern int disk_probe(struct dev *dev); +extern int disk_load_configuration(struct dev *dev); +extern int disk_load(struct dev *dev); +extern void disk_disable(void); + + +#ifndef DOWNLOAD_PROTO_DISK +#define disk_disable() do { } while(0) +#endif + +#define SECTOR_SIZE 512 +#define SECTOR_SHIFT 9 + +/* Maximum block_size that may be set. */ +#define DISK_BUFFER_SIZE (18 * SECTOR_SIZE) + +#endif /* DISK_H */ |