WebSVN – HelenOS – Diff – /trunk/kernel/generic/src/console/klog.c


/*
 * Copyright (c) 2006 Ondrej Palkovsky
 * 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 genericklog
 * @{
 */
/** @file
 */
 
#include <mm/frame.h>
#include <sysinfo/sysinfo.h>
#include <console/klog.h>
#include <print.h>
#include <ddi/device.h>
#include <ddi/irq.h>
#include <ddi/ddi.h>
#include <ipc/irq.h>
 
/** Physical memory area used for klog. */
static parea_t klog_parea;
   
/*
 * For now, we use 0 as INR.
 * However, on some architectures 0 is the clock interrupt (e.g. amd64 and
 * ia32). It is therefore desirable to have architecture specific definition of
 * KLOG_VIRT_INR in the future.
 */
#define KLOG_VIRT_INR   0
 
/* Order of frame to be allocated for klog communication */
#define KLOG_ORDER  0
 
static char *klog;
static int klogsize;
static int klogpos;
 
SPINLOCK_INITIALIZE(klog_lock);
 
static irq_t klog_irq;
 
static irq_ownership_t klog_claim(void);
 
/** Initialize kernel logging facility
 *
 * Allocate pages that are to be shared with uspace for console data.
 * The shared area is a circular buffer. Userspace application may
 * be notified on new data with indication of position and size
 * of the data within the circular buffer.
 */
void klog_init(void)
{
    void *faddr;
 
    faddr = frame_alloc(KLOG_ORDER, FRAME_ATOMIC);
    if (!faddr)
        panic("Cannot allocate page for klog");
    klog = (char *) PA2KA(faddr);
   
    devno_t devno = device_assign_devno();
   
    klog_parea.pbase = (uintptr_t) faddr;
    klog_parea.vbase = (uintptr_t) klog;
    klog_parea.frames = 1 << KLOG_ORDER;
    klog_parea.cacheable = true;
    ddi_parea_register(&klog_parea);
 
    sysinfo_set_item_val("klog.faddr", NULL, (unative_t) faddr);
    sysinfo_set_item_val("klog.fcolor", NULL, (unative_t)
        PAGE_COLOR((uintptr_t) klog));
    sysinfo_set_item_val("klog.pages", NULL, 1 << KLOG_ORDER);
    sysinfo_set_item_val("klog.devno", NULL, devno);
    sysinfo_set_item_val("klog.inr", NULL, KLOG_VIRT_INR);
 
    irq_initialize(&klog_irq);
    klog_irq.devno = devno;
    klog_irq.inr = KLOG_VIRT_INR;
    klog_irq.claim = klog_claim;
    irq_register(&klog_irq);
 
    klogsize = PAGE_SIZE << KLOG_ORDER;
    klogpos = 0;
}
 
/** Allways refuse IRQ ownership.
 *
 * This is not a real IRQ, so we always decline.
 *
 * @return Always returns IRQ_DECLINE.
 */
irq_ownership_t klog_claim(void)
{
    return IRQ_DECLINE;
}
 
static void klog_vprintf(const char *fmt, va_list args)
{
    int ret;
    va_list atst;
 
    va_copy(atst, args);
    spinlock_lock(&klog_lock);
 
    ret = vsnprintf(klog+klogpos, klogsize-klogpos, fmt, atst);
    if (ret >= klogsize-klogpos) {
        klogpos = 0;
        if (ret >= klogsize)
            goto out;
    }
    ipc_irq_send_msg(&klog_irq, klogpos, ret, 0);
    klogpos += ret;
    if (klogpos >= klogsize)
        klogpos = 0;
out:
    spinlock_unlock(&klog_lock);
    va_end(atst);
}
 
/** Printf a message to kernel-uspace log */
void klog_printf(const char *fmt, ...)
{
    va_list args;
   
    va_start(args, fmt);
   
    klog_vprintf(fmt, args);
 
    va_end(args);
}
 
/** @}
 */
 

Rev 2015	Rev 2071
1	/*	1	/*
2	* Copyright (C) 2006 Ondrej Palkovsky	2	* Copyright (c) 2006 Ondrej Palkovsky
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 genericklog	29	/** @addtogroup genericklog
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	*/	33	*/
34		34
35	#include <mm/frame.h>	35	#include <mm/frame.h>
36	#include <sysinfo/sysinfo.h>	36	#include <sysinfo/sysinfo.h>
37	#include <console/klog.h>	37	#include <console/klog.h>
38	#include <print.h>	38	#include <print.h>
39	#include <ddi/device.h>	39	#include <ddi/device.h>
40	#include <ddi/irq.h>	40	#include <ddi/irq.h>
41	#include <ddi/ddi.h>	41	#include <ddi/ddi.h>
42	#include <ipc/irq.h>	42	#include <ipc/irq.h>
43		43
44	/** Physical memory area used for klog. */	44	/** Physical memory area used for klog. */
45	static parea_t klog_parea;	45	static parea_t klog_parea;
46		46
47	/*	47	/*
48	* For now, we use 0 as INR.	48	* For now, we use 0 as INR.
49	* However, on some architectures 0 is the clock interrupt (e.g. amd64 and	49	* However, on some architectures 0 is the clock interrupt (e.g. amd64 and
50	* ia32). It is therefore desirable to have architecture specific definition of	50	* ia32). It is therefore desirable to have architecture specific definition of
51	* KLOG_VIRT_INR in the future.	51	* KLOG_VIRT_INR in the future.
52	*/	52	*/
53	#define KLOG_VIRT_INR 0	53	#define KLOG_VIRT_INR 0
54		54
55	/* Order of frame to be allocated for klog communication */	55	/* Order of frame to be allocated for klog communication */
56	#define KLOG_ORDER 0	56	#define KLOG_ORDER 0
57		57
58	static char *klog;	58	static char *klog;
59	static int klogsize;	59	static int klogsize;
60	static int klogpos;	60	static int klogpos;
61		61
62	SPINLOCK_INITIALIZE(klog_lock);	62	SPINLOCK_INITIALIZE(klog_lock);
63		63
64	static irq_t klog_irq;	64	static irq_t klog_irq;
65		65
66	static irq_ownership_t klog_claim(void);	66	static irq_ownership_t klog_claim(void);
67		67
68	/** Initialize kernel logging facility	68	/** Initialize kernel logging facility
69	*	69	*
70	* Allocate pages that are to be shared with uspace for console data.	70	* Allocate pages that are to be shared with uspace for console data.
71	* The shared area is a circular buffer. Userspace application may	71	* The shared area is a circular buffer. Userspace application may
72	* be notified on new data with indication of position and size	72	* be notified on new data with indication of position and size
73	* of the data within the circular buffer.	73	* of the data within the circular buffer.
74	*/	74	*/
75	void klog_init(void)	75	void klog_init(void)
76	{	76	{
77	void *faddr;	77	void *faddr;
78		78
79	faddr = frame_alloc(KLOG_ORDER, FRAME_ATOMIC);	79	faddr = frame_alloc(KLOG_ORDER, FRAME_ATOMIC);
80	if (!faddr)	80	if (!faddr)
81	panic("Cannot allocate page for klog");	81	panic("Cannot allocate page for klog");
82	klog = (char *) PA2KA(faddr);	82	klog = (char *) PA2KA(faddr);
83		83
84	devno_t devno = device_assign_devno();	84	devno_t devno = device_assign_devno();
85		85
86	klog_parea.pbase = (uintptr_t) faddr;	86	klog_parea.pbase = (uintptr_t) faddr;
87	klog_parea.vbase = (uintptr_t) klog;	87	klog_parea.vbase = (uintptr_t) klog;
88	klog_parea.frames = 1 << KLOG_ORDER;	88	klog_parea.frames = 1 << KLOG_ORDER;
89	klog_parea.cacheable = true;	89	klog_parea.cacheable = true;
90	ddi_parea_register(&klog_parea);	90	ddi_parea_register(&klog_parea);
91		91
92	sysinfo_set_item_val("klog.faddr", NULL, (unative_t) faddr);	92	sysinfo_set_item_val("klog.faddr", NULL, (unative_t) faddr);
93	sysinfo_set_item_val("klog.fcolor", NULL, (unative_t)	93	sysinfo_set_item_val("klog.fcolor", NULL, (unative_t)
94	PAGE_COLOR((uintptr_t) klog));	94	PAGE_COLOR((uintptr_t) klog));
95	sysinfo_set_item_val("klog.pages", NULL, 1 << KLOG_ORDER);	95	sysinfo_set_item_val("klog.pages", NULL, 1 << KLOG_ORDER);
96	sysinfo_set_item_val("klog.devno", NULL, devno);	96	sysinfo_set_item_val("klog.devno", NULL, devno);
97	sysinfo_set_item_val("klog.inr", NULL, KLOG_VIRT_INR);	97	sysinfo_set_item_val("klog.inr", NULL, KLOG_VIRT_INR);
98		98
99	irq_initialize(&klog_irq);	99	irq_initialize(&klog_irq);
100	klog_irq.devno = devno;	100	klog_irq.devno = devno;
101	klog_irq.inr = KLOG_VIRT_INR;	101	klog_irq.inr = KLOG_VIRT_INR;
102	klog_irq.claim = klog_claim;	102	klog_irq.claim = klog_claim;
103	irq_register(&klog_irq);	103	irq_register(&klog_irq);
104		104
105	klogsize = PAGE_SIZE << KLOG_ORDER;	105	klogsize = PAGE_SIZE << KLOG_ORDER;
106	klogpos = 0;	106	klogpos = 0;
107	}	107	}
108		108
109	/** Allways refuse IRQ ownership.	109	/** Allways refuse IRQ ownership.
110	*	110	*
111	* This is not a real IRQ, so we always decline.	111	* This is not a real IRQ, so we always decline.
112	*	112	*
113	* @return Always returns IRQ_DECLINE.	113	* @return Always returns IRQ_DECLINE.
114	*/	114	*/
115	irq_ownership_t klog_claim(void)	115	irq_ownership_t klog_claim(void)
116	{	116	{
117	return IRQ_DECLINE;	117	return IRQ_DECLINE;
118	}	118	}
119		119
120	static void klog_vprintf(const char *fmt, va_list args)	120	static void klog_vprintf(const char *fmt, va_list args)
121	{	121	{
122	int ret;	122	int ret;
123	va_list atst;	123	va_list atst;
124		124
125	va_copy(atst, args);	125	va_copy(atst, args);
126	spinlock_lock(&klog_lock);	126	spinlock_lock(&klog_lock);
127		127
128	ret = vsnprintf(klog+klogpos, klogsize-klogpos, fmt, atst);	128	ret = vsnprintf(klog+klogpos, klogsize-klogpos, fmt, atst);
129	if (ret >= klogsize-klogpos) {	129	if (ret >= klogsize-klogpos) {
130	klogpos = 0;	130	klogpos = 0;
131	if (ret >= klogsize)	131	if (ret >= klogsize)
132	goto out;	132	goto out;
133	}	133	}
134	ipc_irq_send_msg(&klog_irq, klogpos, ret, 0);	134	ipc_irq_send_msg(&klog_irq, klogpos, ret, 0);
135	klogpos += ret;	135	klogpos += ret;
136	if (klogpos >= klogsize)	136	if (klogpos >= klogsize)
137	klogpos = 0;	137	klogpos = 0;
138	out:	138	out:
139	spinlock_unlock(&klog_lock);	139	spinlock_unlock(&klog_lock);
140	va_end(atst);	140	va_end(atst);
141	}	141	}
142		142
143	/** Printf a message to kernel-uspace log */	143	/** Printf a message to kernel-uspace log */
144	void klog_printf(const char *fmt, ...)	144	void klog_printf(const char *fmt, ...)
145	{	145	{
146	va_list args;	146	va_list args;
147		147
148	va_start(args, fmt);	148	va_start(args, fmt);
149		149
150	klog_vprintf(fmt, args);	150	klog_vprintf(fmt, args);
151		151
152	va_end(args);	152	va_end(args);
153	}	153	}
154		154
155	/** @}	155	/** @}
156	*/	156	*/
157		157

Subversion Repositories HelenOS

(root)/trunk/kernel/generic/src/console/klog.c – Rev 2015 → 2071