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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 | #include <mm/frame.h> |
29 | #include <mm/frame.h> |
30 | #include <sysinfo/sysinfo.h> |
30 | #include <sysinfo/sysinfo.h> |
31 | #include <console/klog.h> |
31 | #include <console/klog.h> |
32 | #include <print.h> |
32 | #include <print.h> |
33 | #include <ipc/irq.h> |
33 | #include <ipc/irq.h> |
34 | 34 | ||
35 | /* Order of frame to be allocated for klog communication */ |
35 | /* Order of frame to be allocated for klog communication */ |
36 | #define KLOG_ORDER 0 |
36 | #define KLOG_ORDER 0 |
37 | 37 | ||
38 | static char *klog; |
38 | static char *klog; |
39 | static int klogsize; |
39 | static int klogsize; |
40 | static int klogpos; |
40 | static int klogpos; |
41 | 41 | ||
42 | SPINLOCK_INITIALIZE(klog_lock); |
42 | SPINLOCK_INITIALIZE(klog_lock); |
43 | 43 | ||
44 | /** Initialize kernel loggin facility |
44 | /** Initialize kernel logging facility |
45 | * |
45 | * |
46 | * Allocate pages that are to be shared if uspace for console data |
46 | * Allocate pages that are to be shared with uspace for console data. |
- | 47 | * The shared area is a circular buffer. Userspace application may |
|
- | 48 | * be notified on new data with indication of position and size |
|
- | 49 | * of the data within the circular buffer. |
|
47 | */ |
50 | */ |
48 | void klog_init(void) |
51 | void klog_init(void) |
49 | { |
52 | { |
50 | void *faddr; |
53 | void *faddr; |
51 | 54 | ||
52 | faddr = (void *)PFN2ADDR(frame_alloc(KLOG_ORDER, FRAME_ATOMIC)); |
55 | faddr = (void *)PFN2ADDR(frame_alloc(KLOG_ORDER, FRAME_ATOMIC)); |
53 | if (!faddr) |
56 | if (!faddr) |
54 | panic("Cannot allocate page for klog"); |
57 | panic("Cannot allocate page for klog"); |
55 | klog = (char *)PA2KA(faddr); |
58 | klog = (char *)PA2KA(faddr); |
56 | 59 | ||
57 | sysinfo_set_item_val("klog.faddr", NULL, (__native)faddr); |
60 | sysinfo_set_item_val("klog.faddr", NULL, (__native)faddr); |
58 | sysinfo_set_item_val("klog.pages", NULL, 1 << KLOG_ORDER); |
61 | sysinfo_set_item_val("klog.pages", NULL, 1 << KLOG_ORDER); |
59 | 62 | ||
60 | klogsize = PAGE_SIZE << KLOG_ORDER; |
63 | klogsize = PAGE_SIZE << KLOG_ORDER; |
61 | klogpos = 0; |
64 | klogpos = 0; |
62 | } |
65 | } |
63 | 66 | ||
64 | static void klog_vprintf(const char *fmt, va_list args) |
67 | static void klog_vprintf(const char *fmt, va_list args) |
65 | { |
68 | { |
66 | int ret; |
69 | int ret; |
67 | va_list atst; |
70 | va_list atst; |
68 | 71 | ||
69 | va_copy(atst, args); |
72 | va_copy(atst, args); |
70 | spinlock_lock(&klog_lock); |
73 | spinlock_lock(&klog_lock); |
71 | 74 | ||
72 | ret = vsnprintf(klog+klogpos, klogsize-klogpos, fmt, atst); |
75 | ret = vsnprintf(klog+klogpos, klogsize-klogpos, fmt, atst); |
73 | if (ret >= klogsize-klogpos) { |
76 | if (ret >= klogsize-klogpos) { |
74 | klogpos = 0; |
77 | klogpos = 0; |
75 | if (ret >= klogsize) |
78 | if (ret >= klogsize) |
76 | goto out; |
79 | goto out; |
77 | } |
80 | } |
78 | ipc_irq_send_msg(IPC_IRQ_KLOG, klogpos, ret); |
81 | ipc_irq_send_msg(IPC_IRQ_KLOG, klogpos, ret); |
79 | klogpos += ret; |
82 | klogpos += ret; |
80 | if (klogpos >= klogsize) |
83 | if (klogpos >= klogsize) |
81 | klogpos = 0; |
84 | klogpos = 0; |
82 | out: |
85 | out: |
83 | spinlock_unlock(&klog_lock); |
86 | spinlock_unlock(&klog_lock); |
84 | va_end(atst); |
87 | va_end(atst); |
85 | } |
88 | } |
86 | 89 | ||
87 | /** Printf a message to kernel-uspace log */ |
90 | /** Printf a message to kernel-uspace log */ |
88 | void klog_printf(const char *fmt, ...) |
91 | void klog_printf(const char *fmt, ...) |
89 | { |
92 | { |
90 | va_list args; |
93 | va_list args; |
91 | 94 | ||
92 | va_start(args, fmt); |
95 | va_start(args, fmt); |
93 | 96 | ||
94 | klog_vprintf(fmt, args); |
97 | klog_vprintf(fmt, args); |
95 | 98 | ||
96 | va_end(args); |
99 | va_end(args); |
97 | } |
100 | } |
98 | 101 |