//
// Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net>
//
-// This file may be distributed under the terms of the GNU GPLv3 license.
-
-#include "ioport.h" // outb
-
-#define DISK_RET_SUCCESS 0x00
-#define DISK_RET_EPARAM 0x01
-#define DISK_RET_ECHANGED 0x06
-#define DISK_RET_EBOUNDARY 0x09
-#define DISK_RET_ECONTROLLER 0x20
-#define DISK_RET_ETIMEOUT 0x80
-#define DISK_RET_EMEDIA 0xC0
-
-static inline void
-eoi_master_pic()
-{
- outb(PIC1_IRQ5, PORT_PIC1);
-}
-
-static inline void
-eoi_both_pics()
-{
- outb(PIC2_IRQ13, PORT_PIC2);
- eoi_master_pic();
-}
+// This file may be distributed under the terms of the GNU LGPLv3 license.
+#ifndef __DISK_H
+#define __DISK_H
-// floppy.c
+#include "types.h" // u8
+#include "config.h" // CONFIG_*
+
+#define DISK_RET_SUCCESS 0x00
+#define DISK_RET_EPARAM 0x01
+#define DISK_RET_EADDRNOTFOUND 0x02
+#define DISK_RET_EWRITEPROTECT 0x03
+#define DISK_RET_ECHANGED 0x06
+#define DISK_RET_EBOUNDARY 0x09
+#define DISK_RET_EBADTRACK 0x0c
+#define DISK_RET_ECONTROLLER 0x20
+#define DISK_RET_ETIMEOUT 0x80
+#define DISK_RET_ENOTLOCKED 0xb0
+#define DISK_RET_ELOCKED 0xb1
+#define DISK_RET_ENOTREMOVABLE 0xb2
+#define DISK_RET_ETOOMANYLOCKS 0xb4
+#define DISK_RET_EMEDIA 0xC0
+#define DISK_RET_ENOTREADY 0xAA
+
+
+/****************************************************************
+ * Interface structs
+ ****************************************************************/
+
+// Bios disk structures.
+struct int13ext_s {
+ u8 size;
+ u8 reserved;
+ u16 count;
+ u16 offset;
+ u16 segment;
+ u64 lba;
+} PACKED;
+
+#define GET_INT13EXT(regs,var) \
+ GET_FARVAR((regs)->ds, ((struct int13ext_s*)((regs)->si+0))->var)
+#define SET_INT13EXT(regs,var,val) \
+ SET_FARVAR((regs)->ds, ((struct int13ext_s*)((regs)->si+0))->var, (val))
+
+// Disk Physical Table definition
+struct int13dpt_s {
+ u16 size;
+ u16 infos;
+ u32 cylinders;
+ u32 heads;
+ u32 spt;
+ u64 sector_count;
+ u16 blksize;
+ u16 dpte_offset;
+ u16 dpte_segment;
+ u16 key;
+ u8 dpi_length;
+ u8 reserved1;
+ u16 reserved2;
+ u8 host_bus[4];
+ u8 iface_type[8];
+ u64 iface_path;
+ u64 device_path;
+ u8 reserved3;
+ u8 checksum;
+} PACKED;
+
+#define GET_INT13DPT(regs,var) \
+ GET_FARVAR((regs)->ds, ((struct int13dpt_s*)((regs)->si+0))->var)
+#define SET_INT13DPT(regs,var,val) \
+ SET_FARVAR((regs)->ds, ((struct int13dpt_s*)((regs)->si+0))->var, (val))
+
+// Floppy "Disk Base Table"
+struct floppy_dbt_s {
+ u8 specify1;
+ u8 specify2;
+ u8 shutoff_ticks;
+ u8 bps_code;
+ u8 sectors;
+ u8 interblock_len;
+ u8 data_len;
+ u8 gap_len;
+ u8 fill_byte;
+ u8 settle_time;
+ u8 startup_time;
+} PACKED;
+
+struct floppy_ext_dbt_s {
+ struct floppy_dbt_s dbt;
+ // Extra fields
+ u8 max_track;
+ u8 data_rate;
+ u8 drive_type;
+} PACKED;
+
+// Helper function for setting up a return code.
struct bregs;
+void __disk_ret(struct bregs *regs, u32 linecode, const char *fname);
+#define disk_ret(regs, code) \
+ __disk_ret((regs), (code) | (__LINE__ << 8), __func__)
+
+
+/****************************************************************
+ * Disk command request
+ ****************************************************************/
+
+struct disk_op_s {
+ u64 lba;
+ void *far_buffer;
+ u16 count;
+ u8 driveid;
+ u8 command;
+};
+
+#define CMD_CDROM_READ 1
+#define CMD_CDEMU_READ 2
+
+
+/****************************************************************
+ * Global storage
+ ****************************************************************/
+
+struct chs_s {
+ u16 heads; // # heads
+ u16 cylinders; // # cylinders
+ u16 spt; // # sectors / track
+};
+
+struct ata_channel_s {
+ u16 iobase1; // IO Base 1
+ u16 iobase2; // IO Base 2
+ u16 pci_bdf;
+ u8 irq; // IRQ
+};
+
+struct ata_device_s {
+ u8 type; // Detected type of ata (ata/atapi/none/unknown)
+ u8 device; // Detected type of attached devices (hd/cd/none)
+ u8 removable; // Removable device flag
+ u8 mode; // transfer mode : PIO 16/32 bits - IRQ - ISADMA - PCIDMA
+ u16 blksize; // block size
+
+ u8 translation; // type of translation
+ struct chs_s lchs; // Logical CHS
+ struct chs_s pchs; // Physical CHS
+
+ u64 sectors; // Total sectors count
+};
+
+struct ata_s {
+ // ATA channels info
+ struct ata_channel_s channels[CONFIG_MAX_ATA_INTERFACES];
+
+ // ATA devices info
+ struct ata_device_s devices[CONFIG_MAX_ATA_DEVICES];
+ //
+ // map between bios hd/cd id and ata channels
+ u8 cdcount;
+ u8 idmap[2][CONFIG_MAX_ATA_DEVICES];
+};
+
+
+/****************************************************************
+ * Function defs
+ ****************************************************************/
+
+// ata.c
+extern struct ata_s ATA;
+int ata_cmd_data(struct disk_op_s *op);
+int cdrom_read(struct disk_op_s *op);
+int cdrom_read_512(struct disk_op_s *op);
+int ata_cmd_packet(int driveid, u8 *cmdbuf, u8 cmdlen
+ , u32 length, void *far_buffer);
+void ata_reset(int driveid);
+void hard_drive_setup();
+
+// floppy.c
+extern struct floppy_ext_dbt_s diskette_param_table2;
+void floppy_drive_setup();
void floppy_13(struct bregs *regs, u8 drive);
void floppy_tick();
+
+// disk.c
+void disk_13(struct bregs *regs, u8 device);
+void disk_13XX(struct bregs *regs, u8 device);
+
+// cdrom.c
+void cdrom_13(struct bregs *regs, u8 device);
+void cdemu_13(struct bregs *regs);
+void cdemu_134b(struct bregs *regs);
+int cdrom_boot();
+
+#endif // disk.h
projects / seabios.git / blobdiff