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| Source at commit 1079 created 12 years 9 months ago. By meklort, began implimenting Bios disk changes. Code taken from biosfn.c | |
|---|---|
| 1 | /*␊ |
| 2 | * Copyright (c) 2011 Evan Lojewski. All rights reserved.␊ |
| 3 | *␊ |
| 4 | */␊ |
| 5 | #ifndef BIOSDISK_H␊ |
| 6 | #define BIOSDISK_H␊ |
| 7 | ␊ |
| 8 | #include <IOKit/IOTypes.h>␊ |
| 9 | #include <Disk.hpp>␊ |
| 10 | ␊ |
| 11 | ␊ |
| 12 | #define super Disk␊ |
| 13 | ␊ |
| 14 | /*␊ |
| 15 | * BIOS drive information.␊ |
| 16 | */␊ |
| 17 | struct boot_drive_info {␊ |
| 18 | ␉struct drive_params {␊ |
| 19 | UInt16 buf_size;␊ |
| 20 | UInt16 info_flags;␊ |
| 21 | UInt32 phys_cyls;␊ |
| 22 | UInt32 phys_heads;␊ |
| 23 | UInt32 phys_spt;␊ |
| 24 | UInt64 phys_sectors;␊ |
| 25 | UInt16 phys_nbps;␊ |
| 26 | UInt16 dpte_offset;␊ |
| 27 | UInt16 dpte_segment;␊ |
| 28 | /*␊ |
| 29 | UInt16 key;␊ |
| 30 | UInt8 path_len;␊ |
| 31 | UInt8 reserved1;␊ |
| 32 | UInt16 reserved2;␊ |
| 33 | UInt8 bus_type[4];␊ |
| 34 | UInt8 interface_type[8];␊ |
| 35 | UInt8 interface_path[8];␊ |
| 36 | UInt8 dev_path[8];␊ |
| 37 | UInt8 reserved3;␊ |
| 38 | UInt8 checksum;␊ |
| 39 | */␊ |
| 40 | ␉} params;␊ |
| 41 | ␉struct drive_dpte {␊ |
| 42 | UInt16 io_port_base;␊ |
| 43 | UInt16 control_port_base;␊ |
| 44 | UInt8 head_flags;␊ |
| 45 | UInt8 vendor_info;␊ |
| 46 | UInt8 irq␉␉ : 4;␊ |
| 47 | UInt8 irq_unused : 4;␊ |
| 48 | UInt8 block_count;␊ |
| 49 | UInt8 dma_channel : 4;␊ |
| 50 | UInt8 dma_type␉ : 4;␊ |
| 51 | UInt8 pio_type␉ : 4;␊ |
| 52 | UInt8 pio_unused : 4;␊ |
| 53 | UInt16 option_flags;␊ |
| 54 | UInt16 reserved;␊ |
| 55 | UInt8 revision;␊ |
| 56 | UInt8 checksum;␊ |
| 57 | ␉} dpte;␊ |
| 58 | } __attribute__((packed));␊ |
| 59 | typedef struct boot_drive_info boot_drive_info_t;␊ |
| 60 | ␊ |
| 61 | ␊ |
| 62 | class BiosDisk : public Disk␊ |
| 63 | {␊ |
| 64 | public:␊ |
| 65 | BiosDisk(const char* name);␊ |
| 66 | ~BiosDisk();␊ |
| 67 | ␊ |
| 68 | virtual IOReturn Read(UInt64 sector, UInt64 size, UInt8* buffer);␊ |
| 69 | virtual IOReturn Write(UInt64 sector, UInt64 size, UInt8* buffer);␊ |
| 70 | virtual bool isValid() { return (mValid && (mName != NULL) && (mDiskID & 0x80)); };␊ |
| 71 | ␊ |
| 72 | protected:␊ |
| 73 | UInt8 BIOSRead(UInt16 cylinder, UInt8 head, UInt8 sector, UInt8 count);␊ |
| 74 | ␊ |
| 75 | UInt8 EBIOSRead(UInt64 sector, UInt8 count);␊ |
| 76 | UInt8 EBIOSWrite(UInt64 sector, UInt8 count);␊ |
| 77 | ␊ |
| 78 | UInt8 GetDriveInfo();␊ |
| 79 | ␊ |
| 80 | private:␊ |
| 81 | UInt8 mDiskID;␊ |
| 82 | ␊ |
| 83 | UInt8 mUsesEBIOS;␊ |
| 84 | bool mNoEmulation;␊ |
| 85 | bool mValid;␊ |
| 86 | ␊ |
| 87 | boot_drive_info_t mDriveInfo;␊ |
| 88 | ␊ |
| 89 | };␊ |
| 90 | ␊ |
| 91 | ␊ |
| 92 | #endif /* BIOSDISK_H */␊ |
| 93 | |
