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-rw-r--r--com32/gplinclude/disk/geom.h309
-rw-r--r--com32/gplinclude/disk/read.h6
-rw-r--r--com32/gplinclude/disk/util.h9
-rw-r--r--com32/gplinclude/disk/write.h11
4 files changed, 335 insertions, 0 deletions
diff --git a/com32/gplinclude/disk/geom.h b/com32/gplinclude/disk/geom.h
new file mode 100644
index 00000000..4dda88bf
--- /dev/null
+++ b/com32/gplinclude/disk/geom.h
@@ -0,0 +1,309 @@
+#ifndef _GEOM_H_
+#define _GEOM_H_
+
+#include <stdint.h>
+
+#define SECTOR 512 /* bytes/sector */
+
+/*
+ * Disk parameters
+ */
+struct driveinfo {
+ int disk;
+ int ebios; /* EBIOS supported on this disk */
+ int edd_version; /* EBIOS major version */
+ int edd_functionality_subset;
+ int cbios; /* CHS geometry is valid */
+ int heads;
+ int sectors;
+ int sectors_per_track;
+ int bytes_per_sector;
+ int cylinder;
+ int type; /* Drive type (AT/PS2 floppies only) */
+ int drives; /* Number of drives */
+ char host_bus_type[5];
+ char interface_type[8];
+};
+
+struct ebios_dapa {
+ uint16_t len;
+ uint16_t count;
+ uint16_t off;
+ uint16_t seg;
+ uint64_t lba;
+};
+
+/**
+ * INT 13 Extensions
+ *
+ * Note: if the size is less than 30 on call, the final DWORD will not be
+ * returned by a v2.x implementation; similarly for the Device Path info
+ **/
+struct device_parameter {
+ uint16_t len; /* size of returned data */
+ /**
+ * Bitfields for IBM/MS INT 13 Extensions information flags:
+ * Bit(s) Description (Table 00274)
+ * 0 DMA boundary errors handled transparently
+ * 1 cylinder/head/sectors-per-track information is valid
+ * 2 removable drive
+ * 3 write with verify supported
+ * 4 drive has change-line support (required if drive >= 80h is removable)
+ * 5 drive can be locked (required if drive >= 80h is removable)
+ * 6 CHS information set to maximum supported values, not current media
+ * 15-7 reserved (0)
+ **/
+ uint16_t info; /* information flags */
+ uint32_t cylinders; /* number of physical cylinders on drive */
+ uint32_t heads; /* number of physical heads on drive */
+ uint32_t sectors_per_track; /* number of physical sectors per track */
+ uint64_t sectors; /* total number of sectors on drive */
+ uint16_t bytes_per_sector; /* bytes per sector */
+ /* --- v2.0+ --- */
+ uint32_t dpte_pointer; /* EDD configuration parameters, FFFFh:FFFFh if not available */
+ /* --- v3.0 --- */
+ uint16_t device_path_information; /* signature BEDDh to indicate presence of Device Path info */
+ uint8_t device_path_length; /* length of Device Path information, including signature and this byte (24h for v3.0) */
+ uint8_t device_path_reserved; /* reserved (0) */
+ uint16_t device_path_reserved_2; /* reserved (0) */
+ uint8_t host_bus_type[4]; /* ASCIZ name of host bus ("ISA" or "PCI") */
+ uint8_t interface_type[8]; /* ASCIZ name of interface type
+ * "ATA"
+ * "ATAPI"
+ * "SCSI"
+ * "USB"
+ * "1394" IEEE 1394 (FireWire)
+ * "FIBRE" Fibre Channel
+ */
+ /**
+ * Format of EDD v3.0 Interface Path:
+ * Offset Size Description (Table 00275)
+ * ---ISA---
+ * 00h WORD 16-bit base address
+ * 02h 6 BYTEs reserved (0)
+ * ---PCI---
+ * 00h BYTE PCI bus number
+ * 01h BYTE PCI device number
+ * 02h BYTE PCI function number
+ * 03h 5 BYTEs reserved (0)
+ **/
+ union {
+ struct {
+ uint16_t base_address;
+ uint16_t reserved1;
+ uint32_t reserved2;
+ } __attribute__ ((packed)) isa;
+ struct {
+ uint8_t bus;
+ uint8_t slot;
+ uint8_t function;
+ uint8_t channel;
+ uint32_t reserved;
+ } __attribute__ ((packed)) pci;
+ /* pcix is same as pci */
+ struct {
+ uint64_t reserved;
+ } __attribute__ ((packed)) ibnd;
+ struct {
+ uint64_t reserved;
+ } __attribute__ ((packed)) xprs;
+ struct {
+ uint64_t reserved;
+ } __attribute__ ((packed)) htpt;
+ struct {
+ uint64_t reserved;
+ } __attribute__ ((packed)) unknown;
+ } interface_path;
+ /**
+ * Format of EDD v3.0 Device Path:
+ * Offset Size Description (Table 00276)
+ * ---ATA---
+ * 00h BYTE flag: 00h = master, 01h = slave
+ * 01h 7 BYTEs reserved (0)
+ * ---ATAPI---
+ * 00h BYTE flag: 00h = master, 01h = slave
+ * 01h BYTE logical unit number
+ * 02h 6 BYTEs reserved (0)
+ * ---SCSI---
+ * 00h BYTE logical unit number
+ * 01h 7 BYTEs reserved (0)
+ * ---USB---
+ * 00h BYTE to be determined
+ * 01h 7 BYTEs reserved (0)
+ * ---IEEE1394---
+ * 00h QWORD 64-bit FireWire General Unique Identifier (GUID)
+ * ---FibreChannel---
+ * 00h QWORD Word Wide Number (WWN)
+ **/
+ union {
+ struct {
+ uint8_t device;
+ uint8_t reserved1;
+ uint16_t reserved2;
+ uint32_t reserved3;
+ uint64_t reserved4;
+ } __attribute__ ((packed)) ata;
+ struct {
+ uint8_t device;
+ uint8_t lun;
+ uint8_t reserved1;
+ uint8_t reserved2;
+ uint32_t reserved3;
+ uint64_t reserved4;
+ } __attribute__ ((packed)) atapi;
+ struct {
+ uint16_t id;
+ uint64_t lun;
+ uint16_t reserved1;
+ uint32_t reserved2;
+ } __attribute__ ((packed)) scsi;
+ struct {
+ uint64_t serial_number;
+ uint64_t reserved;
+ } __attribute__ ((packed)) usb;
+ struct {
+ uint64_t eui;
+ uint64_t reserved;
+ } __attribute__ ((packed)) i1394;
+ struct {
+ uint64_t wwid;
+ uint64_t lun;
+ } __attribute__ ((packed)) fibre;
+ struct {
+ uint64_t identity_tag;
+ uint64_t reserved;
+ } __attribute__ ((packed)) i2o;
+ struct {
+ uint32_t array_number;
+ uint32_t reserved1;
+ uint64_t reserved2;
+ } __attribute__ ((packed)) raid;
+ struct {
+ uint8_t device;
+ uint8_t reserved1;
+ uint16_t reserved2;
+ uint32_t reserved3;
+ uint64_t reserved4;
+ } __attribute__ ((packed)) sata;
+ struct {
+ uint64_t reserved1;
+ uint64_t reserved2;
+ } __attribute__ ((packed)) unknown;
+ } device_path;
+ uint8_t reserved; /* reserved (0) */
+ uint8_t cheksum; /* checksum of bytes 1Eh-40h (two's complement of sum, which makes
+ * the 8-bit sum of bytes 1Eh-41h equal 00h) */
+} __attribute__ ((packed));
+
+/**
+ * Format of Phoenix Enhanced Disk Drive Spec translated drive parameter table:
+ * Offset Size Description (Table 00277)
+ * 00h WORD number of cylinders
+ * 02h BYTE number of heads
+ * 03h BYTE A0h (signature indicating translated table)
+ * 04h BYTE number of physical sectors per track
+ * 05h WORD starting write precompensation cylinder number
+ * 07h BYTE reserved
+ * 08h BYTE control byte (see #03198 at INT 41"DISK 0")
+ * 09h WORD number of physical cylinders
+ * 0Bh BYTE number of physical heads
+ * 0Ch WORD cylinder number of landing zone
+ * 0Eh BYTE number of logical sectors per track
+ * 0Fh BYTE checksum
+ * Program: the Phoenix Enhanced Disk Drive Specification is an addition to the
+ * IBM/MS INT 13 extensions
+ *
+ * Format of Phoenix Enhanced Disk Drive Spec Fixed Disk Parameter Table:
+ * Offset Size Description (Table 00278)
+ * 00h WORD physical I/O port base address
+ * 02h WORD disk-drive control port address
+ * 04h BYTE drive flags (see #00279)
+ * 05h BYTE proprietary information
+ * bits 7-4 reserved (0)
+ * bits 3-0: Phoenix proprietary (used by BIOS)
+ * 06h BYTE IRQ for drive (bits 3-0; bits 7-4 reserved and must be 0)
+ * 07h BYTE sector count for multi-sector transfers
+ * 08h BYTE DMA control
+ * bits 7-4: DMA type (0-2) as per ATA-2 specification
+ * bits 3-0: DMA channel
+ * 09h BYTE programmed I/O control
+ * bits 7-4: reserved (0)
+ * bits 3-0: PIO type (1-4) as per ATA-2 specification
+ * 0Ah WORD drive options (see #00280)
+ * 0Ch 2 BYTEs reserved (0)
+ * 0Eh BYTE extension revision level (high nybble=major, low nybble=minor)
+ * (currently 10h for v1.0 and 11h for v1.1-3.0)
+ * 0Fh BYTE 2's complement checksum of bytes 00h-0Eh
+ * 8-bit sum of all bytes 00h-0Fh should equal 00h
+ * SeeAlso: #00277
+ *
+ * Bitfields for Phoenix Enhanced Disk Drive Spec drive flags:
+ * Bit(s) Description (Table 00279)
+ * 7 reserved (1)
+ * 6 LBA enabled
+ * 5 reserved (1)
+ * 4 drive is slave
+ * 3-0 reserved (0)
+ * SeeAlso: #00278,#00280
+ *
+ * Bitfields for Phoenix Enhanced Disk Drive Spec drive options:
+ * Bit(s) Description (Table 00280)
+ * 0 fast PIO enabled
+ * 1 fast DMA access enabled
+ * 2 block PIO (multi-sector transfers) enabled
+ * 3 CHS translation enabled
+ * 4 LBA translation enabled
+ * 5 removable media
+ * 6 ATAPI device (CD-ROM)
+ * 7 32-bit transfer mode
+ * ---v1.1+ ---
+ * 8 ATAPI device uses DRQ to signal readiness for packet command
+ * (must be 0 if bit 6 is 0)
+ * 10-9 translation type (must be 00 if bit 3 is 0)
+ * 00 Phoenix bit-shifting translation
+ * 01 LBA-assisted translation
+ * 10 reserved
+ * 11 proprietary translation
+ * ---v3.0---
+ * 11 Ultra DMA access enabled
+ * 15-12 reserved
+ **/
+
+/*
+ * Values for diskette drive type:
+ * 01h 360K
+ * 02h 1.2M
+ * 03h 720K
+ * 04h 1.44M
+ * 05h ???
+ * reportedly an obscure drive type shipped on some IBM machines,
+ * 2.88M on some machines (at least AMI 486 BIOS)
+ * 06h 2.88M
+ * 10h ATAPI Removable Media Device
+ */
+enum diskette_drive_types {
+ DISKETTE_360K = 1,
+ DISKETTE_1_2M = 2,
+ DISKETTE_720K = 3,
+ DISKETTE_1_44M = 4,
+ DISKETTE_2_88M = 6,
+ DISKETTE_ATAPI = 10,
+};
+
+/**
+ * chs_to_lba - compute lba value from cylinder, head and sector number
+ **/
+static inline int chs_to_lba(const struct driveinfo* drive_info,
+ const unsigned int cylinder, const unsigned int head,
+ const unsigned int sector)
+{
+ return (sector - 1) + (head * drive_info->sectors_per_track) +
+ (cylinder * (drive_info->heads + 1) * drive_info->sectors_per_track);
+}
+
+void lba_to_chs(const struct driveinfo* drive_info, const int lba,
+ unsigned int* cylinder, unsigned int* head,
+ unsigned int* sector);
+int get_drive_parameters(struct driveinfo *drive_info);
+
+#endif /* _GEOM_H */
diff --git a/com32/gplinclude/disk/read.h b/com32/gplinclude/disk/read.h
new file mode 100644
index 00000000..f8000a41
--- /dev/null
+++ b/com32/gplinclude/disk/read.h
@@ -0,0 +1,6 @@
+#ifndef _READ_H_
+#define _READ_H_
+void *dev_read(int drive, unsigned int lba, int sectors);
+void *read_sectors(struct driveinfo* drive_info, const unsigned int lba,
+ const int sectors);
+#endif /* _READ_H */
diff --git a/com32/gplinclude/disk/util.h b/com32/gplinclude/disk/util.h
new file mode 100644
index 00000000..5a76e0c4
--- /dev/null
+++ b/com32/gplinclude/disk/util.h
@@ -0,0 +1,9 @@
+#ifndef _UTIL_H_
+#define _UTIL_H_
+
+#include <com32.h>
+
+int int13_retry(const com32sys_t *inreg, com32sys_t *outreg);
+void get_error(const int, char**);
+
+#endif /* _UTIL_H_ */
diff --git a/com32/gplinclude/disk/write.h b/com32/gplinclude/disk/write.h
new file mode 100644
index 00000000..89ca8736
--- /dev/null
+++ b/com32/gplinclude/disk/write.h
@@ -0,0 +1,11 @@
+#ifndef _WRITE_H_
+#define _WRITE_H_
+int write_sectors(const struct driveinfo* drive_info, const unsigned int lba,
+ const void *data, const int size);
+int write_verify_sector(struct driveinfo* drive_info,
+ const unsigned int lba,
+ const void *data);
+int write_verify_sectors(struct driveinfo* drive_info,
+ const unsigned int lba,
+ const void *data, const int size);
+#endif