WebSVN – HelenOS – Diff – /trunk/kernel/genarch/src/ofw/ebus.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   EBUS 'reg' and 'ranges' properties handling.
 *
 */
 
#include <genarch/ofw/ofw_tree.h>
#include <arch/memstr.h>
#include <arch/trap/interrupt.h>
#include <func.h>
#include <panic.h>
#include <debug.h>
#include <macros.h>
 
/** Apply EBUS ranges to EBUS register. */
bool ofw_ebus_apply_ranges(ofw_tree_node_t *node, ofw_ebus_reg_t *reg, uintptr_t *pa)
{
    ofw_tree_property_t *prop;
    ofw_ebus_range_t *range;
    count_t ranges;
 
    prop = ofw_tree_getprop(node, "ranges");
    if (!prop)
        return false;
       
    ranges = prop->size / sizeof(ofw_ebus_range_t);
    range = prop->value;
   
    int i;
   
    for (i = 0; i < ranges; i++) {
        if (reg->space != range[i].child_space)
            continue;
        if (overlaps(reg->addr, reg->size, range[i].child_base, range[i].size)) {
            ofw_pci_reg_t pci_reg;
           
            pci_reg.space = range[i].parent_space;
            pci_reg.addr = range[i].parent_base + (reg->addr - range[i].child_base);
            pci_reg.size = reg->size;
           
            return ofw_pci_apply_ranges(node->parent, &pci_reg, pa);
        }
    }
 
    return false;
}
 
bool ofw_ebus_map_interrupt(ofw_tree_node_t *node, ofw_ebus_reg_t *reg, uint32_t interrupt, int *inr)
{
    ofw_tree_property_t *prop;
    ofw_tree_node_t *controller;
   
    prop = ofw_tree_getprop(node, "interrupt-map");
    if (!prop || !prop->value)
        return false;
 
    ofw_ebus_intr_map_t *intr_map = prop->value;
    count_t count = prop->size / sizeof(ofw_ebus_intr_map_t);
   
    ASSERT(count);
   
    prop = ofw_tree_getprop(node, "interrupt-map-mask");
    if (!prop || !prop->value)
        return false;
   
    ofw_ebus_intr_mask_t *intr_mask = prop->value;
   
    ASSERT(prop->size == sizeof(ofw_ebus_intr_mask_t));
   
    uint32_t space = reg->space & intr_mask->space_mask;
    uint32_t addr = reg->addr & intr_mask->addr_mask;
    uint32_t intr = interrupt & intr_mask->intr_mask;
   
    int i;
    for (i = 0; i < count; i++) {
        if ((intr_map[i].space == space) && (intr_map[i].addr == addr)
            && (intr_map[i].intr == intr))
            goto found;
    }
    return false;
 
found:
    /*
     * We found the device that functions as an interrupt controller
     * for the interrupt. We also found partial mapping from interrupt to INO.
     */
 
    controller = ofw_tree_find_node_by_handle(ofw_tree_lookup("/"), intr_map[i].controller_handle);
    if (!controller)
        return false;
       
    if (strcmp(ofw_tree_node_name(controller), "pci") != 0) {
        /*
         * This is not a PCI node.
         */
        return false;
    }
 
    /*
     * Let the PCI do the next step in mapping the interrupt.
     */
    if (!ofw_pci_map_interrupt(controller, NULL, intr_map[i].controller_ino, inr))
        return false;
 
    return true;
}
 
/** @}
 */
 

Rev 1912	Rev 2071
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 EBUS 'reg' and 'ranges' properties handling.	34	* @brief EBUS '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/memstr.h>	39	#include <arch/memstr.h>
40	#include <arch/trap/interrupt.h>	40	#include <arch/trap/interrupt.h>
41	#include <func.h>	41	#include <func.h>
42	#include <panic.h>	42	#include <panic.h>
43	#include <debug.h>	43	#include <debug.h>
44	#include <macros.h>	44	#include <macros.h>
45		45
46	/** Apply EBUS ranges to EBUS register. */	46	/** Apply EBUS ranges to EBUS register. */
47	bool ofw_ebus_apply_ranges(ofw_tree_node_t node, ofw_ebus_reg_t reg, uintptr_t *pa)	47	bool ofw_ebus_apply_ranges(ofw_tree_node_t node, ofw_ebus_reg_t reg, uintptr_t *pa)
48	{	48	{
49	ofw_tree_property_t *prop;	49	ofw_tree_property_t *prop;
50	ofw_ebus_range_t *range;	50	ofw_ebus_range_t *range;
51	count_t ranges;	51	count_t ranges;
52		52
53	prop = ofw_tree_getprop(node, "ranges");	53	prop = ofw_tree_getprop(node, "ranges");
54	if (!prop)	54	if (!prop)
55	return false;	55	return false;
56		56
57	ranges = prop->size / sizeof(ofw_ebus_range_t);	57	ranges = prop->size / sizeof(ofw_ebus_range_t);
58	range = prop->value;	58	range = prop->value;
59		59
60	int i;	60	int i;
61		61
62	for (i = 0; i < ranges; i++) {	62	for (i = 0; i < ranges; i++) {
63	if (reg->space != range[i].child_space)	63	if (reg->space != range[i].child_space)
64	continue;	64	continue;
65	if (overlaps(reg->addr, reg->size, range[i].child_base, range[i].size)) {	65	if (overlaps(reg->addr, reg->size, range[i].child_base, range[i].size)) {
66	ofw_pci_reg_t pci_reg;	66	ofw_pci_reg_t pci_reg;
67		67
68	pci_reg.space = range[i].parent_space;	68	pci_reg.space = range[i].parent_space;
69	pci_reg.addr = range[i].parent_base + (reg->addr - range[i].child_base);	69	pci_reg.addr = range[i].parent_base + (reg->addr - range[i].child_base);
70	pci_reg.size = reg->size;	70	pci_reg.size = reg->size;
71		71
72	return ofw_pci_apply_ranges(node->parent, &pci_reg, pa);	72	return ofw_pci_apply_ranges(node->parent, &pci_reg, pa);
73	}	73	}
74	}	74	}
75		75
76	return false;	76	return false;
77	}	77	}
78		78
79	bool ofw_ebus_map_interrupt(ofw_tree_node_t node, ofw_ebus_reg_t reg, uint32_t interrupt, int *inr)	79	bool ofw_ebus_map_interrupt(ofw_tree_node_t node, ofw_ebus_reg_t reg, uint32_t interrupt, int *inr)
80	{	80	{
81	ofw_tree_property_t *prop;	81	ofw_tree_property_t *prop;
82	ofw_tree_node_t *controller;	82	ofw_tree_node_t *controller;
83		83
84	prop = ofw_tree_getprop(node, "interrupt-map");	84	prop = ofw_tree_getprop(node, "interrupt-map");
85	if (!prop \|\| !prop->value)	85	if (!prop \|\| !prop->value)
86	return false;	86	return false;
87		87
88	ofw_ebus_intr_map_t *intr_map = prop->value;	88	ofw_ebus_intr_map_t *intr_map = prop->value;
89	count_t count = prop->size / sizeof(ofw_ebus_intr_map_t);	89	count_t count = prop->size / sizeof(ofw_ebus_intr_map_t);
90		90
91	ASSERT(count);	91	ASSERT(count);
92		92
93	prop = ofw_tree_getprop(node, "interrupt-map-mask");	93	prop = ofw_tree_getprop(node, "interrupt-map-mask");
94	if (!prop \|\| !prop->value)	94	if (!prop \|\| !prop->value)
95	return false;	95	return false;
96		96
97	ofw_ebus_intr_mask_t *intr_mask = prop->value;	97	ofw_ebus_intr_mask_t *intr_mask = prop->value;
98		98
99	ASSERT(prop->size == sizeof(ofw_ebus_intr_mask_t));	99	ASSERT(prop->size == sizeof(ofw_ebus_intr_mask_t));
100		100
101	uint32_t space = reg->space & intr_mask->space_mask;	101	uint32_t space = reg->space & intr_mask->space_mask;
102	uint32_t addr = reg->addr & intr_mask->addr_mask;	102	uint32_t addr = reg->addr & intr_mask->addr_mask;
103	uint32_t intr = interrupt & intr_mask->intr_mask;	103	uint32_t intr = interrupt & intr_mask->intr_mask;
104		104
105	int i;	105	int i;
106	for (i = 0; i < count; i++) {	106	for (i = 0; i < count; i++) {
107	if ((intr_map[i].space == space) && (intr_map[i].addr == addr)	107	if ((intr_map[i].space == space) && (intr_map[i].addr == addr)
108	&& (intr_map[i].intr == intr))	108	&& (intr_map[i].intr == intr))
109	goto found;	109	goto found;
110	}	110	}
111	return false;	111	return false;
112		112
113	found:	113	found:
114	/*	114	/*
115	* We found the device that functions as an interrupt controller	115	* We found the device that functions as an interrupt controller
116	* for the interrupt. We also found partial mapping from interrupt to INO.	116	* for the interrupt. We also found partial mapping from interrupt to INO.
117	*/	117	*/
118		118
119	controller = ofw_tree_find_node_by_handle(ofw_tree_lookup("/"), intr_map[i].controller_handle);	119	controller = ofw_tree_find_node_by_handle(ofw_tree_lookup("/"), intr_map[i].controller_handle);
120	if (!controller)	120	if (!controller)
121	return false;	121	return false;
122		122
123	if (strcmp(ofw_tree_node_name(controller), "pci") != 0) {	123	if (strcmp(ofw_tree_node_name(controller), "pci") != 0) {
124	/*	124	/*
125	* This is not a PCI node.	125	* This is not a PCI node.
126	*/	126	*/
127	return false;	127	return false;
128	}	128	}
129		129
130	/*	130	/*
131	* Let the PCI do the next step in mapping the interrupt.	131	* Let the PCI do the next step in mapping the interrupt.
132	*/	132	*/
133	if (!ofw_pci_map_interrupt(controller, NULL, intr_map[i].controller_ino, inr))	133	if (!ofw_pci_map_interrupt(controller, NULL, intr_map[i].controller_ino, inr))
134	return false;	134	return false;
135		135
136	return true;	136	return true;
137	}	137	}
138		138
139	/** @}	139	/** @}
140	*/	140	*/
141		141

Subversion Repositories HelenOS

(root)/trunk/kernel/genarch/src/ofw/ebus.c – Rev 1912 → 2071