WebSVN – HelenOS – Diff – /branches/dynload/uspace/srv/obio/obio.c


/*
 * Copyright (c) 2009 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 obio
 * @{
 */
 
/**
 * @file    obio.c
 * @brief   OBIO driver.
 *
 * OBIO is a short for on-board I/O. On UltraSPARC IIi and systems with U2P,
 * there is a piece of the root PCI bus controller address space, which
 * contains interrupt mapping and clear registers for all on-board devices.
 * Although UltraSPARC IIi and U2P are different in general, these registers can
 * be found at the same addresses.
 */
 
#include <ipc/ipc.h>
#include <ipc/services.h>
#include <ipc/bus.h>
#include <ipc/ns.h>
#include <sysinfo.h>
#include <as.h>
#include <ddi.h>
#include <align.h>
#include <bool.h>
#include <errno.h>
#include <async.h>
#include <align.h>
#include <async.h>
#include <stdio.h>
#include <ipc/devmap.h>
 
#define NAME "obio"
 
#define OBIO_SIZE   0x1898  
 
#define OBIO_IMR_BASE   0x200
#define OBIO_IMR(ino)   (OBIO_IMR_BASE + ((ino) & INO_MASK))
 
#define OBIO_CIR_BASE   0x300
#define OBIO_CIR(ino)   (OBIO_CIR_BASE + ((ino) & INO_MASK))
 
#define INO_MASK    0x1f
 
static void *base_phys;
static volatile uint64_t *base_virt;
 
/** Handle one connection to obio.
 *
 * @param iid       Hash of the request that opened the connection.
 * @param icall     Call data of the request that opened the connection.
 */
static void obio_connection(ipc_callid_t iid, ipc_call_t *icall)
{
    ipc_callid_t callid;
    ipc_call_t call;
 
    /*
     * Answer the first IPC_M_CONNECT_ME_TO call.
     */
    ipc_answer_0(iid, EOK);
 
    while (1) {
        int inr;
   
        callid = async_get_call(&call);
        switch (IPC_GET_METHOD(call)) {
        case BUS_CLEAR_INTERRUPT:
            inr = IPC_GET_ARG1(call);
            base_virt[OBIO_CIR(inr & INO_MASK)] = 0;
            ipc_answer_0(callid, EOK);
            break;
        default:
            ipc_answer_0(callid, EINVAL);
            break;
        }
    }
}
 
/** Initialize the OBIO driver.
 *
 * So far, the driver heavily depends on information provided by the kernel via
 * sysinfo. In the future, there should be a standalone OBIO driver.
 */
static bool obio_init(void)
{
    ipcarg_t phonead;
 
    base_phys = (void *) sysinfo_value("obio.base.physical");
   
    if (!base_phys) {
        printf(NAME ": no OBIO registers found\n");
        return false;
    }
 
    base_virt = as_get_mappable_page(OBIO_SIZE);
   
    int flags = AS_AREA_READ | AS_AREA_WRITE;
    int retval = physmem_map(base_phys, (void *) base_virt,
        ALIGN_UP(OBIO_SIZE, PAGE_SIZE) >> PAGE_WIDTH, flags);
   
    if (retval < 0) {
        printf(NAME ": Error mapping OBIO registers\n");
        return false;
    }
   
    printf(NAME ": OBIO registers with base at %p\n", base_phys);
 
    async_set_client_connection(obio_connection);
    ipc_connect_to_me(PHONE_NS, SERVICE_OBIO, 0, 0, &phonead);
   
    return true;
}
 
int main(int argc, char **argv)
{
    printf(NAME ": HelenOS OBIO driver\n");
   
    if (!obio_init())
        return -1;
   
    printf(NAME ": Accepting connections\n");
    async_manager();
 
    /* Never reached */
    return 0;
}
 
/**
 * @}
 */
 

Rev 4344	Rev 4346
1	/*	1	/*
2	* Copyright (c) 2009 Jakub Jermar	2	* Copyright (c) 2009 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 obio	29	/** @addtogroup obio
30	* @{	30	* @{
31	*/	31	*/
32		32
33	/**	33	/**
34	* @file obio.c	34	* @file obio.c
35	* @brief OBIO driver.	35	* @brief OBIO driver.
36	*	36	*
37	* OBIO is a short for on-board I/O. On UltraSPARC IIi and systems with U2P,	37	* OBIO is a short for on-board I/O. On UltraSPARC IIi and systems with U2P,
38	* there is a piece of the root PCI bus controller address space, which	38	* there is a piece of the root PCI bus controller address space, which
39	* contains interrupt mapping and clear registers for all on-board devices.	39	* contains interrupt mapping and clear registers for all on-board devices.
40	* Although UltraSPARC IIi and U2P are different in general, these registers can	40	* Although UltraSPARC IIi and U2P are different in general, these registers can
41	* be found at the same addresses.	41	* be found at the same addresses.
42	*/	42	*/
43		43
44	#include <ipc/ipc.h>	44	#include <ipc/ipc.h>
45	#include <ipc/services.h>	45	#include <ipc/services.h>
46	#include <ipc/bus.h>	46	#include <ipc/bus.h>
47	#include <ipc/ns.h>	47	#include <ipc/ns.h>
48	#include <sysinfo.h>	48	#include <sysinfo.h>
49	#include <as.h>	49	#include <as.h>
50	#include <ddi.h>	50	#include <ddi.h>
51	#include <align.h>	51	#include <align.h>
52	#include <bool.h>	52	#include <bool.h>
53	#include <errno.h>	53	#include <errno.h>
54	#include <async.h>	54	#include <async.h>
55	#include <align.h>	55	#include <align.h>
56	#include <async.h>	56	#include <async.h>
57	#include <stdio.h>	57	#include <stdio.h>
58	#include <ipc/devmap.h>	58	#include <ipc/devmap.h>
59		59
60	#define NAME "obio"	60	#define NAME "obio"
61		61
62	#define OBIO_SIZE 0x1898	62	#define OBIO_SIZE 0x1898
63		63
64	#define OBIO_IMR_BASE 0x200	64	#define OBIO_IMR_BASE 0x200
65	#define OBIO_IMR(ino) (OBIO_IMR_BASE + ((ino) & INO_MASK))	65	#define OBIO_IMR(ino) (OBIO_IMR_BASE + ((ino) & INO_MASK))
66		66
67	#define OBIO_CIR_BASE 0x300	67	#define OBIO_CIR_BASE 0x300
68	#define OBIO_CIR(ino) (OBIO_CIR_BASE + ((ino) & INO_MASK))	68	#define OBIO_CIR(ino) (OBIO_CIR_BASE + ((ino) & INO_MASK))
69		69
70	#define INO_MASK 0x1f	70	#define INO_MASK 0x1f
71		71
72	static void *base_phys;	72	static void *base_phys;
73	static volatile uint64_t *base_virt;	73	static volatile uint64_t *base_virt;
74		74
75	/** Handle one connection to obio.	75	/** Handle one connection to obio.
76	*	76	*
77	* @param iid Hash of the request that opened the connection.	77	* @param iid Hash of the request that opened the connection.
78	* @param icall Call data of the request that opened the connection.	78	* @param icall Call data of the request that opened the connection.
79	*/	79	*/
80	static void obio_connection(ipc_callid_t iid, ipc_call_t *icall)	80	static void obio_connection(ipc_callid_t iid, ipc_call_t *icall)
81	{	81	{
82	ipc_callid_t callid;	82	ipc_callid_t callid;
83	ipc_call_t call;	83	ipc_call_t call;
84		84
85	/*	85	/*
86	* Answer the first IPC_M_CONNECT_ME_TO call.	86	* Answer the first IPC_M_CONNECT_ME_TO call.
87	*/	87	*/
88	ipc_answer_0(iid, EOK);	88	ipc_answer_0(iid, EOK);
89		89
90	while (1) {	90	while (1) {
91	int inr;	91	int inr;
92		92
93	callid = async_get_call(&call);	93	callid = async_get_call(&call);
94	switch (IPC_GET_METHOD(call)) {	94	switch (IPC_GET_METHOD(call)) {
95	case BUS_CLEAR_INTERRUPT:	95	case BUS_CLEAR_INTERRUPT:
96	inr = IPC_GET_ARG1(call);	96	inr = IPC_GET_ARG1(call);
97	base_virt[OBIO_CIR(inr) & INO_MASK] = 0;	97	base_virt[OBIO_CIR(inr & INO_MASK)] = 0;
98	ipc_answer_0(callid, EOK);	98	ipc_answer_0(callid, EOK);
99	break;	99	break;
100	default:	100	default:
101	ipc_answer_0(callid, EINVAL);	101	ipc_answer_0(callid, EINVAL);
102	break;	102	break;
103	}	103	}
104	}	104	}
105	}	105	}
106		106
107	/** Initialize the OBIO driver.	107	/** Initialize the OBIO driver.
108	*	108	*
109	* So far, the driver heavily depends on information provided by the kernel via	109	* So far, the driver heavily depends on information provided by the kernel via
110	* sysinfo. In the future, there should be a standalone OBIO driver.	110	* sysinfo. In the future, there should be a standalone OBIO driver.
111	*/	111	*/
112	static bool obio_init(void)	112	static bool obio_init(void)
113	{	113	{
114	ipcarg_t phonead;	114	ipcarg_t phonead;
115		115
116	base_phys = (void *) sysinfo_value("obio.base.physical");	116	base_phys = (void *) sysinfo_value("obio.base.physical");
117		117
118	if (!base_phys) {	118	if (!base_phys) {
119	printf(NAME ": no OBIO registers found\n");	119	printf(NAME ": no OBIO registers found\n");
120	return false;	120	return false;
121	}	121	}
122		122
123	base_virt = as_get_mappable_page(OBIO_SIZE);	123	base_virt = as_get_mappable_page(OBIO_SIZE);
124		124
125	int flags = AS_AREA_READ \| AS_AREA_WRITE;	125	int flags = AS_AREA_READ \| AS_AREA_WRITE;
126	int retval = physmem_map(base_phys, (void *) base_virt,	126	int retval = physmem_map(base_phys, (void *) base_virt,
127	ALIGN_UP(OBIO_SIZE, PAGE_SIZE) >> PAGE_WIDTH, flags);	127	ALIGN_UP(OBIO_SIZE, PAGE_SIZE) >> PAGE_WIDTH, flags);
128		128
129	if (retval < 0) {	129	if (retval < 0) {
130	printf(NAME ": Error mapping OBIO registers\n");	130	printf(NAME ": Error mapping OBIO registers\n");
131	return false;	131	return false;
132	}	132	}
133		133
134	printf(NAME ": OBIO registers with base at %p\n", base_phys);	134	printf(NAME ": OBIO registers with base at %p\n", base_phys);
135		135
136	async_set_client_connection(obio_connection);	136	async_set_client_connection(obio_connection);
137	ipc_connect_to_me(PHONE_NS, SERVICE_OBIO, 0, 0, &phonead);	137	ipc_connect_to_me(PHONE_NS, SERVICE_OBIO, 0, 0, &phonead);
138		138
139	return true;	139	return true;
140	}	140	}
141		141
142	int main(int argc, char **argv)	142	int main(int argc, char **argv)
143	{	143	{
144	printf(NAME ": HelenOS OBIO driver\n");	144	printf(NAME ": HelenOS OBIO driver\n");
145		145
146	if (!obio_init())	146	if (!obio_init())
147	return -1;	147	return -1;
148		148
149	printf(NAME ": Accepting connections\n");	149	printf(NAME ": Accepting connections\n");
150	async_manager();	150	async_manager();
151		151
152	/* Never reached */	152	/* Never reached */
153	return 0;	153	return 0;
154	}	154	}
155		155
156	/**	156	/**
157	* @}	157	* @}
158	*/	158	*/
159		159

Subversion Repositories HelenOS

(root)/branches/dynload/uspace/srv/obio/obio.c – Rev 4344 → 4346