Subversion Repositories Kolibri OS

Rev

Rev 2014 | Show entire file | Regard whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 2014 Rev 2047
Line 3... Line 3...
3 
;; Copyright (C) KolibriOS team 2004-2009. All rights reserved. ;;
 3 
;; Copyright (C) KolibriOS team 2004-2009. All rights reserved. ;;
4 
;; Distributed under terms of the GNU General Public License    ;;
 4 
;; Distributed under terms of the GNU General Public License    ;;
5 
;;                                                              ;;
 5 
;;                                                              ;;
6 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 6 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
Line 7... Line 7...
7 
 
 7 
 
Line 8... Line 8...
8 
$Revision: 2014 $
 8 
$Revision: 2047 $
9 
 
 9 
 
Line 335... Line 335...
335 
	   ret
 335 
	   ret
336 
endp
 336 
endp
Line 337... Line 337...
337 
 
 337 
 
338 
align 4
 338 
align 4
339 
proc init_LFB
 339 
proc init_LFB
Line 340... Line 340...
340 
	   call init_mtrr
 340 
	   stdcall set_mtrr, [LFBAddress],[LFBSize],MEM_WC
341 
 
 341 
 
342 
	   mov edx, LFB_BASE
 342 
	   mov edx, LFB_BASE
343 
	   mov esi, [LFBAddress]
 343 
	   mov esi, [LFBAddress]
Line 362... Line 362...
362 
	   ret
 362 
	   ret
363 
endp
 363 
endp
Line 364... Line 364...
364 
 
 364 
 
365 
align 4
 365 
align 4
366 
init_userDMA:
 366 
init_userDMA:
367 
	   stdcall alloc_pages, 4096	; 16M <<<<<<<<<<+++++++++++++++++++++++++++++++++
 - 
 
368 
	   add eax, 0x007FFFF0		; terrible mess, sorry ...
 - 
 
- 
 
 367 
	   stdcall set_mtrr, [UserDMAaddr], USER_DMA_SIZE, MEM_UC   ; <<<<<<<<<<+++++++++++++++++++++++++++++++++
369 
	   and eax, 0xFF800000		; align at 8M boundary
 368 
 
370 
	   mov [UserDMAaddr], eax
 369 
	   mov	eax, [UserDMAaddr]	; phys. addr, 8M-aligned
371 
	   or  eax, PG_LARGE + PG_UW + PG_NOCACHE
 370 
	   or  eax, PG_GLOBAL+PG_LARGE + PG_UW + PG_NOCACHE
372 
	   mov ebx, sys_pgdir + (USER_DMA_BUFFER shr 20)
 371 
	   mov ebx, sys_pgdir + (USER_DMA_BUFFER shr 20)
373 
	   mov [ebx], eax
 372 
	   mov [ebx], eax
374 
	   add ebx, 4
 373 
	   add ebx, 4
375 
	   add eax, 0x00400000
 374 
	   add eax, 0x00400000
- 
 
 375 
	   mov [ebx], eax
376 
	   mov [ebx], eax
 376 
 
377 
	   mov eax, cr3       ;flush TLB
 377 
	   mov eax, cr3       ;flush TLB
378 
	   mov cr3, eax
 378 
	   mov cr3, eax
Line 379... Line 379...
379 
	   ret
 379 
	   ret
Line 1247... Line 1247...
1247 
	   ret
 1247 
	   ret
1248 
endp
 1248 
endp
Line 1249... Line 1249...
1249 
 
 1249 
 
1250 
 
 - 
 
1251 
align 4
 - 
 
1252 
proc init_mtrr
 - 
 
1253 
 
 - 
 
1254 
	   cmp [BOOT_VAR+0x901c],byte 2
 - 
 
1255 
	   je  .exit
 - 
 
1256 
 
 - 
 
1257 
	   bt [cpu_caps], CAPS_MTRR
 - 
 
1258 
	   jnc .exit
 - 
 
1259 
 
 - 
 
1260 
	   mov eax, cr0
 - 
 
1261 
	   or eax, 0x60000000	;disable caching
 - 
 
1262 
	   mov cr0, eax
 - 
 
1263 
	   wbinvd		;invalidate cache
 - 
 
1264 
 
 - 
 
1265 
	   mov ecx, 0x2FF
 - 
 
1266 
	   rdmsr		;
 - 
 
1267 
; has BIOS already initialized MTRRs?
 - 
 
1268 
	   test ah, 8
 - 
 
1269 
	   jnz .skip_init
 - 
 
1270 
; rarely needed, so mainly placeholder
 - 
 
1271 
; main memory - cached
 - 
 
1272 
	   push eax
 - 
 
1273 
 
 - 
 
1274 
	   mov eax, [MEM_AMOUNT]
 - 
 
1275 
; round eax up to next power of 2
 - 
 
1276 
	   dec eax
 - 
 
1277 
	   bsr ecx, eax
 - 
 
1278 
	   mov ebx, 2
 - 
 
1279 
	   shl ebx, cl
 - 
 
1280 
	   dec ebx
 - 
 
1281 
; base of memory range = 0, type of memory range = MEM_WB
 - 
 
1282 
	   xor edx, edx
 - 
 
1283 
	   mov eax, MEM_WB
 - 
 
1284 
	   mov ecx, 0x200
 - 
 
1285 
	   wrmsr
 - 
 
1286 
; mask of memory range = 0xFFFFFFFFF - (size - 1), ebx = size - 1
 - 
 
1287 
	   mov eax, 0xFFFFFFFF
 - 
 
1288 
	   mov edx, 0x0000000F
 - 
 
1289 
	   sub eax, ebx
 - 
 
1290 
	   sbb edx, 0
 - 
 
1291 
	   or eax, 0x800
 - 
 
1292 
	   inc ecx
 - 
 
1293 
	   wrmsr
 - 
 
1294 
; clear unused MTRRs
 - 
 
1295 
	   xor eax, eax
 - 
 
1296 
	   xor edx, edx
 - 
 
1297 
@@:
 - 
 
1298 
	   wrmsr
 - 
 
1299 
	   inc ecx
 - 
 
1300 
	   cmp ecx, 0x210
 - 
 
1301 
	   jb @b
 - 
 
1302 
; enable MTRRs
 - 
 
1303 
	   pop eax
 - 
 
1304 
	   or ah, 8
 - 
 
1305 
	   and al, 0xF0 ; default memtype = UC
 - 
 
1306 
	   mov ecx, 0x2FF
 - 
 
1307 
	   wrmsr
 - 
 
1308 
.skip_init:
 - 
 
1309 
	   stdcall set_mtrr, [LFBAddress],[LFBSize],MEM_WC
 - 
 
1310 
 
 - 
 
1311 
	   wbinvd		;again invalidate
 - 
 
1312 
 
 - 
 
1313 
	   mov eax, cr0
 - 
 
1314 
	   and eax, not 0x60000000
 - 
 
1315 
	   mov cr0, eax 	; enable caching
 - 
 
1316 
.exit:
 - 
 
1317 
	   ret
 - 
 
1318 
endp
 - 
 
1319 
 
 1250 
 
1320 
align 4
 1251 
align 4
1321 
proc set_mtrr stdcall, base:dword,size:dword,mem_type:dword
 1252 
proc set_mtrr stdcall, base:dword,size:dword,mem_type:dword
1322 
; find unused register
 1253 
; find unused register
1323 
	   mov ecx, 0x201
 1254 
	   mov ecx, 0x201
Line 1335... Line 1266...
1335 
	   jb @b
 1266 
	   jb @b
1336 
; no free registers, ignore the call
 1267 
; no free registers, ignore the call
1337 
.ret:
 1268 
.ret:
1338 
	   ret
 1269 
	   ret
1339 
.found:
 1270 
.found:
- 
 
 1271 
	   mov eax, cr0
- 
 
 1272 
	   or eax, 0x60000000	;disable caching
- 
 
 1273 
	   mov cr0, eax
1340 
; found, write values
 1274 
	   wbinvd		;invalidate cache
- 
 
 1275 
 
1341 
	   xor edx, edx
 1276 
	   xor edx, edx
1342 
	   mov eax, [base]
 1277 
	   mov eax, [base]
1343 
	   or eax, [mem_type]
 1278 
	   or eax, [mem_type]
1344 
	   wrmsr
 1279 
	   wrmsr
Line 1350... Line 1285...
1350 
	   sub eax, ebx
 1285 
	   sub eax, ebx
1351 
	   sbb edx, 0
 1286 
	   sbb edx, 0
1352 
	   or eax, 0x800
 1287 
	   or eax, 0x800
1353 
	   inc ecx
 1288 
	   inc ecx
1354 
	   wrmsr
 1289 
	   wrmsr
- 
 
 1290 
 
- 
 
 1291 
	   wbinvd		;again invalidate
- 
 
 1292 
	   mov eax, cr0
- 
 
 1293 
	   and eax, not 0x60000000
- 
 
 1294 
	   mov cr0, eax 	; enable caching
- 
 
 1295 
 
1355 
	   ret
 1296 
	   ret
1356 
endp
 1297 
endp
Line 1357... Line 1298...
1357 
 
 1298 
 
1358 
align 4
 1299 
align 4