WebSVN – HelenOS – Blame – /branches/sparc/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;
2510	jermar	66	else if (strcmp(name, "cgsix") == 0)
		67	scr_type = SCR_CGSIX;
1897	jermar	68
		69	if (scr_type == SCR_UNKNOWN) {
		70	printf("Unknown keyboard device.\n");
		71	return;
		72	}
		73
		74	uintptr_t fb_addr;
		75	uint32_t fb_width = 0;
		76	uint32_t fb_height = 0;
		77	uint32_t fb_depth = 0;
		78	uint32_t fb_linebytes = 0;
		79	uint32_t fb_scanline = 0;
1993	decky	80	unsigned int visual;
1897	jermar	81
		82	prop = ofw_tree_getprop(node, "width");
		83	if (prop && prop->value)
		84	fb_width = ((uint32_t ) prop->value);
		85
		86	prop = ofw_tree_getprop(node, "height");
		87	if (prop && prop->value)
		88	fb_height = ((uint32_t ) prop->value);
		89
		90	prop = ofw_tree_getprop(node, "depth");
		91	if (prop && prop->value)
		92	fb_depth = ((uint32_t ) prop->value);
		93
		94	prop = ofw_tree_getprop(node, "linebytes");
		95	if (prop && prop->value)
		96	fb_linebytes = ((uint32_t ) prop->value);
		97
		98	prop = ofw_tree_getprop(node, "reg");
		99	if (!prop)
		100	panic("Can't find \"reg\" property.\n");
		101
		102	switch (scr_type) {
		103	case SCR_ATYFB:
		104	if (prop->size / sizeof(ofw_pci_reg_t) < 2) {
		105	printf("Too few screen registers.\n");
		106	return;
		107	}
		108
		109	ofw_pci_reg_t fb_reg = &((ofw_pci_reg_t ) prop->value)[1];
		110	ofw_pci_reg_t abs_reg;
		111
		112	if (!ofw_pci_reg_absolutize(node, fb_reg, &abs_reg)) {
		113	printf("Failed to absolutize fb register.\n");
		114	return;
		115	}
		116
		117	if (!ofw_pci_apply_ranges(node->parent, &abs_reg , &fb_addr)) {
		118	printf("Failed to determine screen address.\n");
		119	return;
		120	}
1993	decky	121
		122	switch (fb_depth) {
		123	case 8:
		124	fb_scanline = fb_linebytes * (fb_depth >> 3);
		125	visual = VISUAL_INDIRECT_8;
		126	break;
		127	case 16:
		128	fb_scanline = fb_linebytes * (fb_depth >> 3);
		129	visual = VISUAL_RGB_5_6_5;
		130	break;
		131	case 24:
1897	jermar	132	fb_scanline = fb_linebytes * 4;
1993	decky	133	visual = VISUAL_RGB_8_8_8_0;
		134	break;
		135	case 32:
1897	jermar	136	fb_scanline = fb_linebytes * (fb_depth >> 3);
1993	decky	137	visual = VISUAL_RGB_0_8_8_8;
		138	break;
		139	default:
		140	printf("Unsupported bits per pixel.\n");
		141	return;
		142	}
1897	jermar	143
		144	break;
1898	jermar	145	case SCR_FFB:
		146	fb_scanline = 8192;
1994	decky	147	visual = VISUAL_BGR_0_8_8_8;
1898	jermar	148
		149	ofw_upa_reg_t reg = &((ofw_upa_reg_t ) prop->value)[FFB_REG_24BPP];
		150	if (!ofw_upa_apply_ranges(node->parent, reg, &fb_addr)) {
		151	printf("Failed to determine screen address.\n");
		152	return;
		153	}
		154
		155	break;
2510	jermar	156	case SCR_CGSIX:
		157	switch (fb_depth) {
		158	case 8:
		159	fb_scanline = fb_linebytes;
		160	visual = VISUAL_INDIRECT_8;
		161	break;
		162	default:
		163	printf("Not implemented.\n");
		164	return;
		165	}
		166
		167	ofw_sbus_reg_t cg6_reg = &((ofw_sbus_reg_t ) prop->value)[0];
		168	if (!ofw_sbus_apply_ranges(node->parent, cg6_reg, &fb_addr)) {
		169	printf("Failed to determine screen address.\n");
		170	return;
		171	}
		172
		173	break;
1897	jermar	174	default:
		175	panic("Unexpected type.\n");
		176	}
		177
1993	decky	178	fb_init(fb_addr, fb_width, fb_height, fb_scanline, visual);
1897	jermar	179	}
		180
		181	/** @}
		182	*/

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