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

Rev	Author	Line No.	Line
1897	jermar	1	/*
2071	jermar	2	* Copyright (c) 2006 Jakub Jermar
1897	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 <func.h>
		41	#include <align.h>
		42	#include <print.h>
		43
1898	jermar	44	#define FFB_REG_24BPP 7
		45
1897	jermar	46	scr_type_t scr_type = SCR_UNKNOWN;
		47
		48	/** Initialize screen.
		49	*
		50	* Traverse OpenFirmware device tree in order to find necessary
		51	* info about the screen device.
		52	*
		53	* @param node Screen device node.
		54	*/
		55	void scr_init(ofw_tree_node_t *node)
		56	{
		57	ofw_tree_property_t *prop;
		58	const char *name;
		59
		60	name = ofw_tree_node_name(node);
		61
		62	if (strcmp(name, "SUNW,m64B") == 0)
		63	scr_type = SCR_ATYFB;
		64	else if (strcmp(name, "SUNW,ffb") == 0)
		65	scr_type = SCR_FFB;
		66
		67	if (scr_type == SCR_UNKNOWN) {
		68	printf("Unknown keyboard device.\n");
		69	return;
		70	}
		71
		72	uintptr_t fb_addr;
		73	uint32_t fb_width = 0;
		74	uint32_t fb_height = 0;
		75	uint32_t fb_depth = 0;
		76	uint32_t fb_linebytes = 0;
		77	uint32_t fb_scanline = 0;
1993	decky	78	unsigned int visual;
1897	jermar	79
		80	prop = ofw_tree_getprop(node, "width");
		81	if (prop && prop->value)
		82	fb_width = ((uint32_t ) prop->value);
		83
		84	prop = ofw_tree_getprop(node, "height");
		85	if (prop && prop->value)
		86	fb_height = ((uint32_t ) prop->value);
		87
		88	prop = ofw_tree_getprop(node, "depth");
		89	if (prop && prop->value)
		90	fb_depth = ((uint32_t ) prop->value);
		91
		92	prop = ofw_tree_getprop(node, "linebytes");
		93	if (prop && prop->value)
		94	fb_linebytes = ((uint32_t ) prop->value);
		95
		96	prop = ofw_tree_getprop(node, "reg");
		97	if (!prop)
		98	panic("Can't find \"reg\" property.\n");
		99
		100	switch (scr_type) {
		101	case SCR_ATYFB:
		102	if (prop->size / sizeof(ofw_pci_reg_t) < 2) {
		103	printf("Too few screen registers.\n");
		104	return;
		105	}
		106
		107	ofw_pci_reg_t fb_reg = &((ofw_pci_reg_t ) prop->value)[1];
		108	ofw_pci_reg_t abs_reg;
		109
		110	if (!ofw_pci_reg_absolutize(node, fb_reg, &abs_reg)) {
		111	printf("Failed to absolutize fb register.\n");
		112	return;
		113	}
		114
		115	if (!ofw_pci_apply_ranges(node->parent, &abs_reg , &fb_addr)) {
		116	printf("Failed to determine screen address.\n");
		117	return;
		118	}
1993	decky	119
		120	switch (fb_depth) {
		121	case 8:
		122	fb_scanline = fb_linebytes * (fb_depth >> 3);
		123	visual = VISUAL_INDIRECT_8;
		124	break;
		125	case 16:
		126	fb_scanline = fb_linebytes * (fb_depth >> 3);
		127	visual = VISUAL_RGB_5_6_5;
		128	break;
		129	case 24:
1897	jermar	130	fb_scanline = fb_linebytes * 4;
1993	decky	131	visual = VISUAL_RGB_8_8_8_0;
		132	break;
		133	case 32:
1897	jermar	134	fb_scanline = fb_linebytes * (fb_depth >> 3);
1993	decky	135	visual = VISUAL_RGB_0_8_8_8;
		136	break;
		137	default:
		138	printf("Unsupported bits per pixel.\n");
		139	return;
		140	}
1897	jermar	141
		142	break;
1898	jermar	143	case SCR_FFB:
		144	fb_scanline = 8192;
1994	decky	145	visual = VISUAL_BGR_0_8_8_8;
1898	jermar	146
		147	ofw_upa_reg_t reg = &((ofw_upa_reg_t ) prop->value)[FFB_REG_24BPP];
		148	if (!ofw_upa_apply_ranges(node->parent, reg, &fb_addr)) {
		149	printf("Failed to determine screen address.\n");
		150	return;
		151	}
		152
		153	break;
1897	jermar	154	default:
		155	panic("Unexpected type.\n");
		156	}
		157
1993	decky	158	fb_init(fb_addr, fb_width, fb_height, fb_scanline, visual);
1897	jermar	159	}
		160
		161	/** @}
		162	*/

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