WebSVN – HelenOS – Diff – /branches/network/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 <string.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;
   
    unsigned 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, cir_t *cir, void **cir_arg)
{
    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;
   
    unsigned 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 (str_cmp(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, cir, cir_arg))
        return false;
 
    return true;
}
 
/** @}
 */
 

Rev 4153	Rev 4263
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 <string.h>	41	#include <string.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	47	bool
48	ofw_ebus_apply_ranges(ofw_tree_node_t node, ofw_ebus_reg_t reg, uintptr_t *pa)	48	ofw_ebus_apply_ranges(ofw_tree_node_t node, ofw_ebus_reg_t reg, uintptr_t *pa)
49	{	49	{
50	ofw_tree_property_t *prop;	50	ofw_tree_property_t *prop;
51	ofw_ebus_range_t *range;	51	ofw_ebus_range_t *range;
52	count_t ranges;	52	count_t ranges;
53		53
54	prop = ofw_tree_getprop(node, "ranges");	54	prop = ofw_tree_getprop(node, "ranges");
55	if (!prop)	55	if (!prop)
56	return false;	56	return false;
57		57
58	ranges = prop->size / sizeof(ofw_ebus_range_t);	58	ranges = prop->size / sizeof(ofw_ebus_range_t);
59	range = prop->value;	59	range = prop->value;
60		60
61	unsigned int i;	61	unsigned int i;
62		62
63	for (i = 0; i < ranges; i++) {	63	for (i = 0; i < ranges; i++) {
64	if (reg->space != range[i].child_space)	64	if (reg->space != range[i].child_space)
65	continue;	65	continue;
66	if (overlaps(reg->addr, reg->size, range[i].child_base,	66	if (overlaps(reg->addr, reg->size, range[i].child_base,
67	range[i].size)) {	67	range[i].size)) {
68	ofw_pci_reg_t pci_reg;	68	ofw_pci_reg_t pci_reg;
69		69
70	pci_reg.space = range[i].parent_space;	70	pci_reg.space = range[i].parent_space;
71	pci_reg.addr = range[i].parent_base +	71	pci_reg.addr = range[i].parent_base +
72	(reg->addr - range[i].child_base);	72	(reg->addr - range[i].child_base);
73	pci_reg.size = reg->size;	73	pci_reg.size = reg->size;
74		74
75	return ofw_pci_apply_ranges(node->parent, &pci_reg, pa);	75	return ofw_pci_apply_ranges(node->parent, &pci_reg, pa);
76	}	76	}
77	}	77	}
78		78
79	return false;	79	return false;
80	}	80	}
81		81
82	bool	82	bool
83	ofw_ebus_map_interrupt(ofw_tree_node_t node, ofw_ebus_reg_t reg,	83	ofw_ebus_map_interrupt(ofw_tree_node_t node, ofw_ebus_reg_t reg,
84	uint32_t interrupt, int inr, cir_t cir, void **cir_arg)	84	uint32_t interrupt, int inr, cir_t cir, void **cir_arg)
85	{	85	{
86	ofw_tree_property_t *prop;	86	ofw_tree_property_t *prop;
87	ofw_tree_node_t *controller;	87	ofw_tree_node_t *controller;
88		88
89	prop = ofw_tree_getprop(node, "interrupt-map");	89	prop = ofw_tree_getprop(node, "interrupt-map");
90	if (!prop \|\| !prop->value)	90	if (!prop \|\| !prop->value)
91	return false;	91	return false;
92		92
93	ofw_ebus_intr_map_t *intr_map = prop->value;	93	ofw_ebus_intr_map_t *intr_map = prop->value;
94	count_t count = prop->size / sizeof(ofw_ebus_intr_map_t);	94	count_t count = prop->size / sizeof(ofw_ebus_intr_map_t);
95		95
96	ASSERT(count);	96	ASSERT(count);
97		97
98	prop = ofw_tree_getprop(node, "interrupt-map-mask");	98	prop = ofw_tree_getprop(node, "interrupt-map-mask");
99	if (!prop \|\| !prop->value)	99	if (!prop \|\| !prop->value)
100	return false;	100	return false;
101		101
102	ofw_ebus_intr_mask_t *intr_mask = prop->value;	102	ofw_ebus_intr_mask_t *intr_mask = prop->value;
103		103
104	ASSERT(prop->size == sizeof(ofw_ebus_intr_mask_t));	104	ASSERT(prop->size == sizeof(ofw_ebus_intr_mask_t));
105		105
106	uint32_t space = reg->space & intr_mask->space_mask;	106	uint32_t space = reg->space & intr_mask->space_mask;
107	uint32_t addr = reg->addr & intr_mask->addr_mask;	107	uint32_t addr = reg->addr & intr_mask->addr_mask;
108	uint32_t intr = interrupt & intr_mask->intr_mask;	108	uint32_t intr = interrupt & intr_mask->intr_mask;
109		109
110	unsigned int i;	110	unsigned int i;
111	for (i = 0; i < count; i++) {	111	for (i = 0; i < count; i++) {
112	if ((intr_map[i].space == space) &&	112	if ((intr_map[i].space == space) &&
113	(intr_map[i].addr == addr) && (intr_map[i].intr == intr))	113	(intr_map[i].addr == addr) && (intr_map[i].intr == intr))
114	goto found;	114	goto found;
115	}	115	}
116	return false;	116	return false;
117		117
118	found:	118	found:
119	/*	119	/*
120	* We found the device that functions as an interrupt controller	120	* We found the device that functions as an interrupt controller
121	* for the interrupt. We also found partial mapping from interrupt to	121	* for the interrupt. We also found partial mapping from interrupt to
122	* INO.	122	* INO.
123	*/	123	*/
124		124
125	controller = ofw_tree_find_node_by_handle(ofw_tree_lookup("/"),	125	controller = ofw_tree_find_node_by_handle(ofw_tree_lookup("/"),
126	intr_map[i].controller_handle);	126	intr_map[i].controller_handle);
127	if (!controller)	127	if (!controller)
128	return false;	128	return false;
129		129
130	if (strcmp(ofw_tree_node_name(controller), "pci") != 0) {	130	if (str_cmp(ofw_tree_node_name(controller), "pci") != 0) {
131	/*	131	/*
132	* This is not a PCI node.	132	* This is not a PCI node.
133	*/	133	*/
134	return false;	134	return false;
135	}	135	}
136		136
137	/*	137	/*
138	* Let the PCI do the next step in mapping the interrupt.	138	* Let the PCI do the next step in mapping the interrupt.
139	*/	139	*/
140	if (!ofw_pci_map_interrupt(controller, NULL, intr_map[i].controller_ino,	140	if (!ofw_pci_map_interrupt(controller, NULL, intr_map[i].controller_ino,
141	inr, cir, cir_arg))	141	inr, cir, cir_arg))
142	return false;	142	return false;
143		143
144	return true;	144	return true;
145	}	145	}
146		146
147	/** @}	147	/** @}
148	*/	148	*/
149		149

Subversion Repositories HelenOS

(root)/branches/network/kernel/genarch/src/ofw/ebus.c @ 4744 – Rev 4153 → 4263