WebSVN – HelenOS – Diff – /trunk/kernel/genarch/src/ofw/fhc.c


/*
 * Copyright (c) 2006 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
/** @addtogroup ofw
 * @{
 */
/**
 * @file
 * @brief   FHC 'reg' and 'ranges' properties handling.
 *
 */
 
#include <genarch/ofw/ofw_tree.h>
#include <arch/drivers/fhc.h>
#include <arch/memstr.h>
#include <string.h>
#include <panic.h>
#include <macros.h>
 
bool ofw_fhc_apply_ranges(ofw_tree_node_t *node, ofw_fhc_reg_t *reg, uintptr_t *pa)
{
    ofw_tree_property_t *prop;
    ofw_fhc_range_t *range;
    count_t ranges;
 
    prop = ofw_tree_getprop(node, "ranges");
    if (!prop)
        return false;
       
    ranges = prop->size / sizeof(ofw_fhc_range_t);
    range = prop->value;
   
    unsigned int i;
   
    for (i = 0; i < ranges; i++) {
        if (overlaps(reg->addr, reg->size, range[i].child_base, range[i].size)) {
            uintptr_t addr;
           
            addr = range[i].parent_base + (reg->addr - range[i].child_base);
            if (!node->parent->parent) {
                *pa = addr;
                return true;
            }
            if (strcmp(ofw_tree_node_name(node->parent), "central") != 0)
                panic("Unexpected parent node: %s.", ofw_tree_node_name(node->parent));
           
            ofw_central_reg_t central_reg;
           
            central_reg.addr = addr;
            central_reg.size = reg->size;
           
            return ofw_central_apply_ranges(node->parent, &central_reg, pa);
        }
    }
 
    return false;
}
 
bool ofw_central_apply_ranges(ofw_tree_node_t *node, ofw_central_reg_t *reg, uintptr_t *pa)
{
    if (node->parent->parent)
        panic("Unexpected parent node: %s.", ofw_tree_node_name(node->parent));
   
    ofw_tree_property_t *prop;
    ofw_central_range_t *range;
    count_t ranges;
   
    prop = ofw_tree_getprop(node, "ranges");
    if (!prop)
        return false;
       
    ranges = prop->size / sizeof(ofw_central_range_t);
    range = prop->value;
   
    unsigned int i;
   
    for (i = 0; i < ranges; i++) {
        if (overlaps(reg->addr, reg->size, range[i].child_base, range[i].size)) {
            *pa = range[i].parent_base + (reg->addr - range[i].child_base);
            return true;
        }
    }
   
    return false;
}
 
bool
ofw_fhc_map_interrupt(ofw_tree_node_t *node, ofw_fhc_reg_t *reg,
    uint32_t interrupt, int *inr, cir_t *cir, void **cir_arg)
{
    fhc_t *fhc = NULL;
    if (!node->device) {
        fhc = fhc_init(node);
        if (!fhc)
            return false;
        node->device = fhc;
        central_fhc = fhc;
    }
   
    /*
     * The interrupt controller for the interrupt is the FHC itself.
     */
    fhc_enable_interrupt(fhc, interrupt);
   
    *inr = interrupt;
    *cir = fhc_clear_interrupt;
    *cir_arg = fhc;
    return true;
}
 
/** @}
 */
 

Rev 3790	Rev 4011
1	/*	1	/*
2	* Copyright (c) 2006 Jakub Jermar	2	* Copyright (c) 2006 Jakub Jermar
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	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	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.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	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	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	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	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	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	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.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/** @addtogroup ofw	29	/** @addtogroup ofw
30	* @{	30	* @{
31	*/	31	*/
32	/**	32	/**
33	* @file	33	* @file
34	* @brief FHC 'reg' and 'ranges' properties handling.	34	* @brief FHC 'reg' and 'ranges' properties handling.
35	*	35	*
36	*/	36	*/
37		37
38	#include <genarch/ofw/ofw_tree.h>	38	#include <genarch/ofw/ofw_tree.h>
39	#include <arch/drivers/fhc.h>	39	#include <arch/drivers/fhc.h>
40	#include <arch/memstr.h>	40	#include <arch/memstr.h>
41	#include <func.h>	41	#include <string.h>
42	#include <panic.h>	42	#include <panic.h>
43	#include <macros.h>	43	#include <macros.h>
44		44
45	bool ofw_fhc_apply_ranges(ofw_tree_node_t node, ofw_fhc_reg_t reg, uintptr_t *pa)	45	bool ofw_fhc_apply_ranges(ofw_tree_node_t node, ofw_fhc_reg_t reg, uintptr_t *pa)
46	{	46	{
47	ofw_tree_property_t *prop;	47	ofw_tree_property_t *prop;
48	ofw_fhc_range_t *range;	48	ofw_fhc_range_t *range;
49	count_t ranges;	49	count_t ranges;
50		50
51	prop = ofw_tree_getprop(node, "ranges");	51	prop = ofw_tree_getprop(node, "ranges");
52	if (!prop)	52	if (!prop)
53	return false;	53	return false;
54		54
55	ranges = prop->size / sizeof(ofw_fhc_range_t);	55	ranges = prop->size / sizeof(ofw_fhc_range_t);
56	range = prop->value;	56	range = prop->value;
57		57
58	unsigned int i;	58	unsigned int i;
59		59
60	for (i = 0; i < ranges; i++) {	60	for (i = 0; i < ranges; i++) {
61	if (overlaps(reg->addr, reg->size, range[i].child_base, range[i].size)) {	61	if (overlaps(reg->addr, reg->size, range[i].child_base, range[i].size)) {
62	uintptr_t addr;	62	uintptr_t addr;
63		63
64	addr = range[i].parent_base + (reg->addr - range[i].child_base);	64	addr = range[i].parent_base + (reg->addr - range[i].child_base);
65	if (!node->parent->parent) {	65	if (!node->parent->parent) {
66	*pa = addr;	66	*pa = addr;
67	return true;	67	return true;
68	}	68	}
69	if (strcmp(ofw_tree_node_name(node->parent), "central") != 0)	69	if (strcmp(ofw_tree_node_name(node->parent), "central") != 0)
70	panic("Unexpected parent node: %s.", ofw_tree_node_name(node->parent));	70	panic("Unexpected parent node: %s.", ofw_tree_node_name(node->parent));
71		71
72	ofw_central_reg_t central_reg;	72	ofw_central_reg_t central_reg;
73		73
74	central_reg.addr = addr;	74	central_reg.addr = addr;
75	central_reg.size = reg->size;	75	central_reg.size = reg->size;
76		76
77	return ofw_central_apply_ranges(node->parent, &central_reg, pa);	77	return ofw_central_apply_ranges(node->parent, &central_reg, pa);
78	}	78	}
79	}	79	}
80		80
81	return false;	81	return false;
82	}	82	}
83		83
84	bool ofw_central_apply_ranges(ofw_tree_node_t node, ofw_central_reg_t reg, uintptr_t *pa)	84	bool ofw_central_apply_ranges(ofw_tree_node_t node, ofw_central_reg_t reg, uintptr_t *pa)
85	{	85	{
86	if (node->parent->parent)	86	if (node->parent->parent)
87	panic("Unexpected parent node: %s.", ofw_tree_node_name(node->parent));	87	panic("Unexpected parent node: %s.", ofw_tree_node_name(node->parent));
88		88
89	ofw_tree_property_t *prop;	89	ofw_tree_property_t *prop;
90	ofw_central_range_t *range;	90	ofw_central_range_t *range;
91	count_t ranges;	91	count_t ranges;
92		92
93	prop = ofw_tree_getprop(node, "ranges");	93	prop = ofw_tree_getprop(node, "ranges");
94	if (!prop)	94	if (!prop)
95	return false;	95	return false;
96		96
97	ranges = prop->size / sizeof(ofw_central_range_t);	97	ranges = prop->size / sizeof(ofw_central_range_t);
98	range = prop->value;	98	range = prop->value;
99		99
100	unsigned int i;	100	unsigned int i;
101		101
102	for (i = 0; i < ranges; i++) {	102	for (i = 0; i < ranges; i++) {
103	if (overlaps(reg->addr, reg->size, range[i].child_base, range[i].size)) {	103	if (overlaps(reg->addr, reg->size, range[i].child_base, range[i].size)) {
104	*pa = range[i].parent_base + (reg->addr - range[i].child_base);	104	*pa = range[i].parent_base + (reg->addr - range[i].child_base);
105	return true;	105	return true;
106	}	106	}
107	}	107	}
108		108
109	return false;	109	return false;
110	}	110	}
111		111
112	bool	112	bool
113	ofw_fhc_map_interrupt(ofw_tree_node_t node, ofw_fhc_reg_t reg,	113	ofw_fhc_map_interrupt(ofw_tree_node_t node, ofw_fhc_reg_t reg,
114	uint32_t interrupt, int inr, cir_t cir, void **cir_arg)	114	uint32_t interrupt, int inr, cir_t cir, void **cir_arg)
115	{	115	{
116	fhc_t *fhc = NULL;	116	fhc_t *fhc = NULL;
117	if (!node->device) {	117	if (!node->device) {
118	fhc = fhc_init(node);	118	fhc = fhc_init(node);
119	if (!fhc)	119	if (!fhc)
120	return false;	120	return false;
121	node->device = fhc;	121	node->device = fhc;
122	central_fhc = fhc;	122	central_fhc = fhc;
123	}	123	}
124		124
125	/*	125	/*
126	* The interrupt controller for the interrupt is the FHC itself.	126	* The interrupt controller for the interrupt is the FHC itself.
127	*/	127	*/
128	fhc_enable_interrupt(fhc, interrupt);	128	fhc_enable_interrupt(fhc, interrupt);
129		129
130	*inr = interrupt;	130	*inr = interrupt;
131	*cir = fhc_clear_interrupt;	131	*cir = fhc_clear_interrupt;
132	*cir_arg = fhc;	132	*cir_arg = fhc;
133	return true;	133	return true;
134	}	134	}
135		135
136	/** @}	136	/** @}
137	*/	137	*/
138		138

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(root)/trunk/kernel/genarch/src/ofw/fhc.c @ 3790 – Rev 3790 → 4011