WebSVN – HelenOS – Blame – /trunk/kernel/arch/sparc64/src/drivers/scr.c

Rev	Author	Line No.	Line
1897	jermar	1	/*
		2	* Copyright (C) 2006 Jakub Jermar
		3	* All rights reserved.
		4	*
		5	* Redistribution and use in source and binary forms, with or without
		6	* modification, are permitted provided that the following conditions
		7	* are met:
		8	*
		9	* - Redistributions of source code must retain the above copyright
		10	* notice, this list of conditions and the following disclaimer.
		11	* - Redistributions in binary form must reproduce the above copyright
		12	* notice, this list of conditions and the following disclaimer in the
		13	* documentation and/or other materials provided with the distribution.
		14	* - The name of the author may not be used to endorse or promote products
		15	* derived from this software without specific prior written permission.
		16	*
		17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
		18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
		19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
		20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
		21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
		22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
		23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
		24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
		25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
		26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
		27	*/
		28
		29	/** @addtogroup sparc64
		30	* @{
		31	*/
		32	/** @file
		33	*/
		34
		35	#include <arch/drivers/scr.h>
		36	#include <genarch/ofw/ofw_tree.h>
		37	#include <genarch/fb/fb.h>
1993	decky	38	#include <genarch/fb/visuals.h>
1897	jermar	39	#include <arch/types.h>
		40	#include <typedefs.h>
		41	#include <func.h>
		42	#include <align.h>
		43	#include <print.h>
		44
1898	jermar	45	#define FFB_REG_24BPP 7
		46
1897	jermar	47	scr_type_t scr_type = SCR_UNKNOWN;
		48
		49	/** Initialize screen.
		50	*
		51	* Traverse OpenFirmware device tree in order to find necessary
		52	* info about the screen device.
		53	*
		54	* @param node Screen device node.
		55	*/
		56	void scr_init(ofw_tree_node_t *node)
		57	{
		58	ofw_tree_property_t *prop;
		59	const char *name;
		60
		61	name = ofw_tree_node_name(node);
		62
		63	if (strcmp(name, "SUNW,m64B") == 0)
		64	scr_type = SCR_ATYFB;
		65	else if (strcmp(name, "SUNW,ffb") == 0)
		66	scr_type = SCR_FFB;
		67
		68	if (scr_type == SCR_UNKNOWN) {
		69	printf("Unknown keyboard device.\n");
		70	return;
		71	}
		72
		73	uintptr_t fb_addr;
		74	uint32_t fb_width = 0;
		75	uint32_t fb_height = 0;
		76	uint32_t fb_depth = 0;
		77	uint32_t fb_linebytes = 0;
		78	uint32_t fb_scanline = 0;
1993	decky	79	unsigned int visual;
1897	jermar	80
		81	prop = ofw_tree_getprop(node, "width");
		82	if (prop && prop->value)
		83	fb_width = ((uint32_t ) prop->value);
		84
		85	prop = ofw_tree_getprop(node, "height");
		86	if (prop && prop->value)
		87	fb_height = ((uint32_t ) prop->value);
		88
		89	prop = ofw_tree_getprop(node, "depth");
		90	if (prop && prop->value)
		91	fb_depth = ((uint32_t ) prop->value);
		92
		93	prop = ofw_tree_getprop(node, "linebytes");
		94	if (prop && prop->value)
		95	fb_linebytes = ((uint32_t ) prop->value);
		96
		97	prop = ofw_tree_getprop(node, "reg");
		98	if (!prop)
		99	panic("Can't find \"reg\" property.\n");
		100
		101	switch (scr_type) {
		102	case SCR_ATYFB:
		103	if (prop->size / sizeof(ofw_pci_reg_t) < 2) {
		104	printf("Too few screen registers.\n");
		105	return;
		106	}
		107
		108	ofw_pci_reg_t fb_reg = &((ofw_pci_reg_t ) prop->value)[1];
		109	ofw_pci_reg_t abs_reg;
		110
		111	if (!ofw_pci_reg_absolutize(node, fb_reg, &abs_reg)) {
		112	printf("Failed to absolutize fb register.\n");
		113	return;
		114	}
		115
		116	if (!ofw_pci_apply_ranges(node->parent, &abs_reg , &fb_addr)) {
		117	printf("Failed to determine screen address.\n");
		118	return;
		119	}
1993	decky	120
		121	switch (fb_depth) {
		122	case 8:
		123	fb_scanline = fb_linebytes * (fb_depth >> 3);
		124	visual = VISUAL_INDIRECT_8;
		125	break;
		126	case 16:
		127	fb_scanline = fb_linebytes * (fb_depth >> 3);
		128	visual = VISUAL_RGB_5_6_5;
		129	break;
		130	case 24:
1897	jermar	131	fb_scanline = fb_linebytes * 4;
1993	decky	132	visual = VISUAL_RGB_8_8_8_0;
		133	break;
		134	case 32:
1897	jermar	135	fb_scanline = fb_linebytes * (fb_depth >> 3);
1993	decky	136	visual = VISUAL_RGB_0_8_8_8;
		137	break;
		138	default:
		139	printf("Unsupported bits per pixel.\n");
		140	return;
		141	}
1897	jermar	142
		143	break;
1898	jermar	144	case SCR_FFB:
		145	fb_scanline = 8192;
1993	decky	146	visual = VISUAL_RGB_0_8_8_8;
1898	jermar	147
		148	ofw_upa_reg_t reg = &((ofw_upa_reg_t ) prop->value)[FFB_REG_24BPP];
		149	if (!ofw_upa_apply_ranges(node->parent, reg, &fb_addr)) {
		150	printf("Failed to determine screen address.\n");
		151	return;
		152	}
		153
		154	break;
1897	jermar	155	default:
		156	panic("Unexpected type.\n");
		157	}
		158
1993	decky	159	fb_init(fb_addr, fb_width, fb_height, fb_scanline, visual);
1897	jermar	160	}
		161
		162	/** @}
		163	*/

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(root)/trunk/kernel/arch/sparc64/src/drivers/scr.c – Rev 1993