WebSVN – Kolibri OS – Blame – /kernel/branches/Kolibri-acpi/video/framebuffer.inc

Rev	Author	Line No.	Line
6246	serge	1	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		2	;; ;;
		3	;; Copyright (C) KolibriOS team 2004-2016. All rights reserved. ;;
		4	;; Distributed under terms of the GNU General Public License ;;
		5	;; ;;
		6	;; Synhronization for MenuetOS. ;;
		7	;; Author: Halyavin Andrey, halyavin@land.ru ;;
		8	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		9
		10	$Revision: 6240 $
		11
		12	struct FRB
		13	list LHEAD
		14	magic rd 1
		15	handle rd 1
		16	destroy rd 1
		17
		18	width rd 1
		19	height rd 1
		20	pitch rd 1
		21	format rd 1
		22	private rd 1
		23	pde rd 8
		24	ends
		25
		26	align 4
		27	create_framebuffer:
		28	mov ecx, sizeof.FRB
		29	call create_object
		30	test eax, eax
		31	jz .fail
		32
		33	mov [eax+FRB.magic], 'FRMB'
		34	mov [eax+FRB.destroy], 0
		35	.fail:
		36	ret
		37
		38
		39	align 4
		40	init_video:
		41	mov ebp, bios_fb
		42
		43	movzx eax, byte [BOOT_VARS+BOOT_BPP] ; bpp
		44	mov [_display.bits_per_pixel], eax
		45	mov [_display.vrefresh], 60
		46
		47	movzx eax, word [BOOT_VARS+BOOT_X_RES]; X max
		48	mov [_display.width], eax
		49	mov [ebp+FRB.width], eax
		50	mov [display_width_standard], eax
		51	dec eax
		52	mov [screen_workarea.right], eax
		53
		54	movzx eax, word [BOOT_VARS+BOOT_Y_RES]; Y max
		55	mov [_display.height], eax
		56	mov [ebp+FRB.height], eax
		57	mov [display_height_standard], eax
		58	dec eax
		59	mov [screen_workarea.bottom], eax
		60
		61	movzx eax, word [BOOT_VARS+BOOT_VESA_MODE] ; screen mode
		62	mov dword [SCR_MODE], eax
		63	mov eax, 640 *4 ; Bytes PerScanLine
		64	cmp [SCR_MODE], word 0x13 ; 320x200
		65	je @f
		66	cmp [SCR_MODE], word 0x12 ; VGA 640x480
		67	je @f
		68	movzx eax, word[BOOT_VARS+BOOT_PITCH] ; for other modes
		69	@@:
		70	mov [_display.lfb_pitch], eax
		71	mov [ebp+FRB.pitch], eax
		72
		73	mov eax, [BOOT_VARS+BOOT_LFB]
		74	mov [LFBAddress], eax
		75
		76	mov eax, [_display.width]
		77	mul [_display.height]
		78	mov [_display.win_map_size], eax
		79
		80	cmp word [SCR_MODE], 0x0012 ; VGA (640x480 16 colors)
		81	je .vga
		82	cmp word [SCR_MODE], 0x0013 ; MCGA (320*200 256 colors)
		83	je .32bpp
		84	cmp byte [_display.bits_per_pixel], 32
		85	je .32bpp
		86	cmp byte [_display.bits_per_pixel], 24
		87	je .24bpp
		88	cmp byte [_display.bits_per_pixel], 16
		89	je .16bpp
		90
		91	.vga:
		92	mov [PUTPIXEL], VGA_putpixel
		93	mov [GETPIXEL], Vesa20_getpixel32 ; Conversion buffer is 32 bpp
		94	mov [_display.bytes_per_pixel], 4 ; Conversion buffer is 32 bpp
		95	jmp .finish
		96
		97	.16bpp:
		98	mov [PUTPIXEL], Vesa20_putpixel16
		99	mov [GETPIXEL], Vesa20_getpixel16
		100	mov [_display.bytes_per_pixel], 2
		101	jmp .finish
		102
		103	.24bpp:
		104	mov [PUTPIXEL], Vesa20_putpixel24
		105	mov [GETPIXEL], Vesa20_getpixel24
		106	mov [_display.bytes_per_pixel], 3
		107	jmp .finish
		108
		109	.32bpp:
		110	mov [PUTPIXEL], Vesa20_putpixel32
		111	mov [GETPIXEL], Vesa20_getpixel32
		112	mov [_display.bytes_per_pixel], 4
		113
		114	.finish:
		115	mov [MOUSE_PICTURE], mousepointer
		116	mov [_display.check_mouse], check_mouse_area_for_putpixel
		117	mov [_display.check_m_pixel], check_mouse_area_for_getpixel
		118
		119	mov ax, word [SCR_MODE]
		120	cmp ax, 0x0012
		121	je .fake
		122	cmp ax, 0x0013
		123	je .fake
		124
		125	mov esi, [LFBAddress]
		126	bt [cpu_caps], CAPS_PSE
		127	jnc .create_page_tables
		128	mov edx, 0x00400000
		129	or esi, PG_GLOBAL+PDE_LARGE+PAT_WC+PG_UWR
		130	and esi, [pte_valid_mask]
		131	mov [ebp+FRB.pde], esi
		132	add esi, edx
		133	mov [ebp+FRB.pde+4], esi
		134	add esi, edx
		135	mov [ebp+FRB.pde+8], esi
		136	add esi, edx
		137	mov [ebp+FRB.pde+12], esi
		138	add esi, edx
		139	.ok:
		140	call calculate_fast_getting_offset_for_WinMapAddress
		141	; for Qemu or non standart video cards
		142	; Unfortunately [BytesPerScanLine] does not always
		143	; equal to [_display.width] * [ScreenBPP] / 8
		144	call calculate_fast_getting_offset_for_LFB
		145	ret
		146
		147	.create_page_tables:
		148
		149	add ebp, FRB.pde
		150	or esi, PG_GLOBAL+PAT_WC+PG_UWR
		151	and esi, [pte_valid_mask]
		152
		153	stdcall alloc_kernel_space, 0x1000
		154	mov edi, eax
		155	mov ebx, 4
		156
		157	.new_pd:
		158	call alloc_page
		159	lea edx, [eax+PG_UWR]
		160	mov [ebp], edx
		161
		162	stdcall map_page, edi, eax, PG_SWR
		163
		164	mov eax, esi
		165	mov ecx, 1024
		166	@@:
		167	stosd
		168	add eax, 0x1000
		169	loop @B
		170
		171	add esi, 0x400000
		172	add ebp, 4
		173	sub edi, 4096
		174	dec ebx
		175	jnz .new_pd
		176	stdcall free_kernel_space, edi
		177	jmp .ok
		178
		179	.fake:
		180	mov [BOOT_VARS+BOOT_MTRR], byte 2
		181
		182	stdcall alloc_kernel_space, 0x1000
		183	push eax ;store in stack for subsequent
		184	mov edi, eax ;free_kernel_space call
		185
		186	call alloc_page
		187	lea edx, [eax+PG_UWR]
		188	mov [ebp+FRB.pde], edx
		189
		190	; max VGA=6404804=1228800 bytes
		191	; + 326404=81920 bytes for mouse pointer
		192	stdcall alloc_pages, ((1228800+81920)/4096)
		193	or eax, PG_GLOBAL+PG_UWR
		194	and eax, [pte_valid_mask]
		195	mov ecx, (1228800+81920)/4096
		196	@@:
		197	stosd
		198	add eax, 0x1000
		199	loop @B
		200
		201	call free_kernel_space
		202	jmp .ok
		203
		204	align 4
		205	set_framebuffer:
		206	mov edx, LFB_BASE shr 22
		207	mov eax, [ecx+FRB.pde]
		208	mov dword [master_tab+edx*4], eax
		209	mov eax, [ecx+FRB.pde+4]
		210	mov dword [master_tab+edx*4+4], eax
		211	mov eax, [ecx+FRB.pde+8]
		212	mov dword [master_tab+edx*4+8], eax
		213	mov eax, [ecx+FRB.pde+12]
		214	mov dword [master_tab+edx*4+12], eax
		215	ret
		216

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(root)/kernel/branches/Kolibri-acpi/video/framebuffer.inc @ 6252 – Rev 6246