4 * execute BIOS int 10h calls in x86 real mode environment
5 * Copyright 1999 Egbert Eich
12 #include <X11/Xdefs.h>
15 #define SEG_ADDR(x) (((x) >> 4) & 0x00F000)
16 #define SEG_OFF(x) ((x) & 0x0FFFF)
18 #define SET_BIOS_SCRATCH 0x1
19 #define RESTORE_BIOS_SCRATCH 0x2
21 /* int10 info structure */
31 struct _int10Mem* mem;
43 struct pci_device *dev;
45 } xf86Int10InfoRec, *xf86Int10InfoPtr;
47 typedef struct _int10Mem {
48 CARD8(*rb)(xf86Int10InfoPtr, int);
49 CARD16(*rw)(xf86Int10InfoPtr, int);
50 CARD32(*rl)(xf86Int10InfoPtr, int);
51 void(*wb)(xf86Int10InfoPtr, int, CARD8);
52 void(*ww)(xf86Int10InfoPtr, int, CARD16);
53 void(*wl)(xf86Int10InfoPtr, int, CARD32);
54 } int10MemRec, *int10MemPtr;
61 } legacyVGARec, *legacyVGAPtr;
63 /* OS dependent functions */
64 extern _X_EXPORT xf86Int10InfoPtr xf86InitInt10(int entityIndex);
65 extern _X_EXPORT xf86Int10InfoPtr xf86ExtendedInitInt10(int entityIndex,
67 extern _X_EXPORT void xf86FreeInt10(xf86Int10InfoPtr pInt);
68 extern _X_EXPORT void *xf86Int10AllocPages(xf86Int10InfoPtr pInt, int num,
70 extern _X_EXPORT void xf86Int10FreePages(xf86Int10InfoPtr pInt, void *pbase,
72 extern _X_EXPORT pointer xf86int10Addr(xf86Int10InfoPtr pInt, CARD32 addr);
74 /* x86 executor related functions */
75 extern _X_EXPORT void xf86ExecX86int10(xf86Int10InfoPtr pInt);
79 #define I_S_DEFAULT_INT_VECT 0xFF065
80 #define SYS_SIZE 0x100000
81 #define SYS_BIOS 0xF0000
83 #define BIOS_SIZE 0x10000
84 #else /* a bug in DGUX requires this - let's try it */
85 #define BIOS_SIZE (0x10000 - 1)
87 #define LOW_PAGE_SIZE 0x600
89 #define VRAM_SIZE 0x20000
90 #define V_BIOS_SIZE 0x10000
91 #define V_BIOS 0xC0000
92 #define BIOS_SCRATCH_OFF 0x449
93 #define BIOS_SCRATCH_END 0x466
94 #define BIOS_SCRATCH_LEN (BIOS_SCRATCH_END - BIOS_SCRATCH_OFF + 1)
95 #define HIGH_MEM V_BIOS
96 #define HIGH_MEM_SIZE (SYS_BIOS - HIGH_MEM)
97 #define SEG_ADR(type, seg, reg) type((seg << 4) + (X86_##reg))
98 #define SEG_EADR(type, seg, reg) type((seg << 4) + (X86_E##reg))
100 #define X86_TF_MASK 0x00000100
101 #define X86_IF_MASK 0x00000200
102 #define X86_IOPL_MASK 0x00003000
103 #define X86_NT_MASK 0x00004000
104 #define X86_VM_MASK 0x00020000
105 #define X86_AC_MASK 0x00040000
106 #define X86_VIF_MASK 0x00080000 /* virtual interrupt flag */
107 #define X86_VIP_MASK 0x00100000 /* virtual interrupt pending */
108 #define X86_ID_MASK 0x00200000
110 #define MEM_RB(name, addr) (*name->mem->rb)(name, addr)
111 #define MEM_RW(name, addr) (*name->mem->rw)(name, addr)
112 #define MEM_RL(name, addr) (*name->mem->rl)(name, addr)
113 #define MEM_WB(name, addr, val) (*name->mem->wb)(name, addr, val)
114 #define MEM_WW(name, addr, val) (*name->mem->ww)(name, addr, val)
115 #define MEM_WL(name, addr, val) (*name->mem->wl)(name, addr, val)
117 /* OS dependent functions */
118 extern _X_EXPORT Bool MapCurrentInt10(xf86Int10InfoPtr pInt);
119 /* x86 executor related functions */
120 extern _X_EXPORT Bool xf86Int10ExecSetup(xf86Int10InfoPtr pInt);
123 extern _X_EXPORT xf86Int10InfoPtr Int10Current;
124 int int_handler(xf86Int10InfoPtr pInt);
127 int setup_int(xf86Int10InfoPtr pInt);
128 void finish_int(xf86Int10InfoPtr, int sig);
129 CARD32 getIntVect(xf86Int10InfoPtr pInt, int num);
130 void pushw(xf86Int10InfoPtr pInt, CARD16 val);
131 int run_bios_int(int num, xf86Int10InfoPtr pInt);
132 void dump_code(xf86Int10InfoPtr pInt);
133 void dump_registers(xf86Int10InfoPtr pInt);
134 void stack_trace(xf86Int10InfoPtr pInt);
135 CARD8 bios_checksum(const CARD8 *start, int size);
136 void LockLegacyVGA(xf86Int10InfoPtr pInt, legacyVGAPtr vga);
137 void UnlockLegacyVGA(xf86Int10InfoPtr pInt, legacyVGAPtr vga);
139 extern _X_EXPORT void xf86Int10SaveRestoreBIOSVars(xf86Int10InfoPtr pInt, Bool save);
141 int port_rep_inb(xf86Int10InfoPtr pInt,
142 CARD16 port, CARD32 base, int d_f, CARD32 count);
143 int port_rep_inw(xf86Int10InfoPtr pInt,
144 CARD16 port, CARD32 base, int d_f, CARD32 count);
145 int port_rep_inl(xf86Int10InfoPtr pInt,
146 CARD16 port, CARD32 base, int d_f, CARD32 count);
147 int port_rep_outb(xf86Int10InfoPtr pInt,
148 CARD16 port, CARD32 base, int d_f, CARD32 count);
149 int port_rep_outw(xf86Int10InfoPtr pInt,
150 CARD16 port, CARD32 base, int d_f, CARD32 count);
151 int port_rep_outl(xf86Int10InfoPtr pInt,
152 CARD16 port, CARD32 base, int d_f, CARD32 count);
154 CARD8 x_inb(CARD16 port);
155 CARD16 x_inw(CARD16 port);
156 void x_outb(CARD16 port, CARD8 val);
157 void x_outw(CARD16 port, CARD16 val);
158 CARD32 x_inl(CARD16 port);
159 void x_outl(CARD16 port, CARD32 val);
161 CARD8 Mem_rb(CARD32 addr);
162 CARD16 Mem_rw(CARD32 addr);
163 CARD32 Mem_rl(CARD32 addr);
164 void Mem_wb(CARD32 addr, CARD8 val);
165 void Mem_ww(CARD32 addr, CARD16 val);
166 void Mem_wl(CARD32 addr, CARD32 val);
169 void setup_int_vect(xf86Int10InfoPtr pInt);
170 int setup_system_bios(void *base_addr);
171 void reset_int_vect(xf86Int10InfoPtr pInt);
172 void set_return_trap(xf86Int10InfoPtr pInt);
173 extern _X_EXPORT void * xf86HandleInt10Options(ScrnInfoPtr pScrn, int entityIndex);
174 Bool int10skip(const void* options);
175 Bool int10_check_bios(int scrnIndex, int codeSeg,
176 const unsigned char* vbiosMem);
177 Bool initPrimary(const void* options);
178 extern _X_EXPORT BusType xf86int10GetBiosLocationType(const xf86Int10InfoPtr pInt);
179 extern _X_EXPORT Bool xf86int10GetBiosSegment(xf86Int10InfoPtr pInt, void *base);
181 void dprint(unsigned long start, unsigned long size);
184 #endif /* _INT10_PRIVATE */
185 #endif /* _XF86INT10_H */