diff options
author | Thibaut Varene <varenet@parisc-linux.org> | 2006-05-03 19:27:35 -0400 |
---|---|---|
committer | Kyle McMartin <kyle@hera.kernel.org> | 2006-06-27 19:28:37 -0400 |
commit | 8ffaeaf42e91930888df09d696a8a6ebe056d0e0 (patch) | |
tree | 7b1785ccab10b69c06f91184e382f8d96b1cc04d /arch/parisc/kernel/pdc_chassis.c | |
parent | c95f2e5f2f6f61d734a025414c9eb81872a5c831 (diff) |
[PARISC] PDC_CHASSIS is implemented on all machines
This patch removes a limitation of the original code, so that CHASSIS
codes can be sent to all machines. On machines with a LCD panel, this
code displays "INI" during bootup, "RUN" when the system is booted and
running, "FLT" when a panic occurs, etc.
This part of the code can be enabled/disabled through CONFIG_PDC_CHASSIS
This patch also adds minimalistic support for Chassis warnings, through
a proc entry '/proc/chassis', which will reflect the warnings status (PSU
or fans failure when they happen, NVRAM battery level and temperature
thresholds overflows).
This part of the code can be enabled/disabled through CONFIG_PDC_CHASSIS_WARN
Signed-off-by: Thibaut VARENE <varenet@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
Diffstat (limited to 'arch/parisc/kernel/pdc_chassis.c')
-rw-r--r-- | arch/parisc/kernel/pdc_chassis.c | 73 |
1 files changed, 62 insertions, 11 deletions
diff --git a/arch/parisc/kernel/pdc_chassis.c b/arch/parisc/kernel/pdc_chassis.c index a45e2e2ffd9f..51e86c0365c1 100644 --- a/arch/parisc/kernel/pdc_chassis.c +++ b/arch/parisc/kernel/pdc_chassis.c | |||
@@ -1,8 +1,8 @@ | |||
1 | /* | 1 | /* |
2 | * interfaces to log Chassis Codes via PDC (firmware) | 2 | * interfaces to Chassis Codes via PDC (firmware) |
3 | * | 3 | * |
4 | * Copyright (C) 2002 Laurent Canet <canetl@esiee.fr> | 4 | * Copyright (C) 2002 Laurent Canet <canetl@esiee.fr> |
5 | * Copyright (C) 2002-2004 Thibaut VARENE <varenet@parisc-linux.org> | 5 | * Copyright (C) 2002-2006 Thibaut VARENE <varenet@parisc-linux.org> |
6 | * | 6 | * |
7 | * This program is free software; you can redistribute it and/or modify | 7 | * This program is free software; you can redistribute it and/or modify |
8 | * it under the terms of the GNU General Public License, version 2, as | 8 | * it under the terms of the GNU General Public License, version 2, as |
@@ -16,6 +16,9 @@ | |||
16 | * You should have received a copy of the GNU General Public License | 16 | * You should have received a copy of the GNU General Public License |
17 | * along with this program; if not, write to the Free Software | 17 | * along with this program; if not, write to the Free Software |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
19 | * | ||
20 | * TODO: poll chassis warns, trigger (configurable) machine shutdown when | ||
21 | * needed. | ||
19 | */ | 22 | */ |
20 | 23 | ||
21 | #undef PDC_CHASSIS_DEBUG | 24 | #undef PDC_CHASSIS_DEBUG |
@@ -30,6 +33,7 @@ | |||
30 | #include <linux/reboot.h> | 33 | #include <linux/reboot.h> |
31 | #include <linux/notifier.h> | 34 | #include <linux/notifier.h> |
32 | #include <linux/cache.h> | 35 | #include <linux/cache.h> |
36 | #include <linux/proc_fs.h> | ||
33 | 37 | ||
34 | #include <asm/pdc_chassis.h> | 38 | #include <asm/pdc_chassis.h> |
35 | #include <asm/processor.h> | 39 | #include <asm/processor.h> |
@@ -38,7 +42,6 @@ | |||
38 | 42 | ||
39 | 43 | ||
40 | #ifdef CONFIG_PDC_CHASSIS | 44 | #ifdef CONFIG_PDC_CHASSIS |
41 | static int pdc_chassis_old __read_mostly = 0; | ||
42 | static unsigned int pdc_chassis_enabled __read_mostly = 1; | 45 | static unsigned int pdc_chassis_enabled __read_mostly = 1; |
43 | 46 | ||
44 | 47 | ||
@@ -64,7 +67,7 @@ __setup("pdcchassis=", pdc_chassis_setup); | |||
64 | * Currently, only E class and A180 are known to work with this. | 67 | * Currently, only E class and A180 are known to work with this. |
65 | * Inspired by Christoph Plattner | 68 | * Inspired by Christoph Plattner |
66 | */ | 69 | */ |
67 | 70 | #if 0 | |
68 | static void __init pdc_chassis_checkold(void) | 71 | static void __init pdc_chassis_checkold(void) |
69 | { | 72 | { |
70 | switch(CPU_HVERSION) { | 73 | switch(CPU_HVERSION) { |
@@ -73,7 +76,6 @@ static void __init pdc_chassis_checkold(void) | |||
73 | case 0x482: /* E45 */ | 76 | case 0x482: /* E45 */ |
74 | case 0x483: /* E55 */ | 77 | case 0x483: /* E55 */ |
75 | case 0x516: /* A180 */ | 78 | case 0x516: /* A180 */ |
76 | pdc_chassis_old = 1; | ||
77 | break; | 79 | break; |
78 | 80 | ||
79 | default: | 81 | default: |
@@ -81,7 +83,7 @@ static void __init pdc_chassis_checkold(void) | |||
81 | } | 83 | } |
82 | DPRINTK(KERN_DEBUG "%s: pdc_chassis_checkold(); pdc_chassis_old = %d\n", __FILE__, pdc_chassis_old); | 84 | DPRINTK(KERN_DEBUG "%s: pdc_chassis_checkold(); pdc_chassis_old = %d\n", __FILE__, pdc_chassis_old); |
83 | } | 85 | } |
84 | 86 | #endif | |
85 | 87 | ||
86 | /** | 88 | /** |
87 | * pdc_chassis_panic_event() - Called by the panic handler. | 89 | * pdc_chassis_panic_event() - Called by the panic handler. |
@@ -136,14 +138,13 @@ void __init parisc_pdc_chassis_init(void) | |||
136 | DPRINTK(KERN_DEBUG "%s: parisc_pdc_chassis_init()\n", __FILE__); | 138 | DPRINTK(KERN_DEBUG "%s: parisc_pdc_chassis_init()\n", __FILE__); |
137 | 139 | ||
138 | /* Let see if we have something to handle... */ | 140 | /* Let see if we have something to handle... */ |
139 | /* Check for PDC_PAT or old LED Panel */ | 141 | /* Check for PDC_PAT */ |
140 | pdc_chassis_checkold(); | ||
141 | if (is_pdc_pat()) { | 142 | if (is_pdc_pat()) { |
142 | printk(KERN_INFO "Enabling PDC_PAT chassis codes support.\n"); | 143 | printk(KERN_INFO "Enabling PDC_PAT chassis codes support.\n"); |
143 | handle = 1; | 144 | handle = 1; |
144 | } | 145 | } |
145 | else if (unlikely(pdc_chassis_old)) { | 146 | else { |
146 | printk(KERN_INFO "Enabling old style chassis LED panel support.\n"); | 147 | printk(KERN_INFO "Enabling regular chassis codes support.\n"); |
147 | handle = 1; | 148 | handle = 1; |
148 | } | 149 | } |
149 | 150 | ||
@@ -215,9 +216,12 @@ int pdc_chassis_send_status(int message) | |||
215 | } | 216 | } |
216 | } else retval = -1; | 217 | } else retval = -1; |
217 | #else | 218 | #else |
218 | if (unlikely(pdc_chassis_old)) { | 219 | if (1) { |
219 | switch (message) { | 220 | switch (message) { |
220 | case PDC_CHASSIS_DIRECT_BSTART: | 221 | case PDC_CHASSIS_DIRECT_BSTART: |
222 | retval = pdc_chassis_disp(PDC_CHASSIS_DISP_DATA(OSTAT_INIT)); | ||
223 | break; | ||
224 | |||
221 | case PDC_CHASSIS_DIRECT_BCOMPLETE: | 225 | case PDC_CHASSIS_DIRECT_BCOMPLETE: |
222 | retval = pdc_chassis_disp(PDC_CHASSIS_DISP_DATA(OSTAT_RUN)); | 226 | retval = pdc_chassis_disp(PDC_CHASSIS_DISP_DATA(OSTAT_RUN)); |
223 | break; | 227 | break; |
@@ -244,3 +248,50 @@ int pdc_chassis_send_status(int message) | |||
244 | #endif /* CONFIG_PDC_CHASSIS */ | 248 | #endif /* CONFIG_PDC_CHASSIS */ |
245 | return retval; | 249 | return retval; |
246 | } | 250 | } |
251 | |||
252 | #ifdef CONFIG_PDC_CHASSIS_WARN | ||
253 | #ifdef CONFIG_PROC_FS | ||
254 | static int pdc_chassis_warn_pread(char *page, char **start, off_t off, | ||
255 | int count, int *eof, void *data) | ||
256 | { | ||
257 | char *out = page; | ||
258 | int len, ret; | ||
259 | unsigned long warn; | ||
260 | u32 warnreg; | ||
261 | |||
262 | ret = pdc_chassis_warn(&warn); | ||
263 | if (ret != PDC_OK) | ||
264 | return -EIO; | ||
265 | |||
266 | warnreg = (warn & 0xFFFFFFFF); | ||
267 | |||
268 | if ((warnreg >> 24) & 0xFF) | ||
269 | out += sprintf(out, "Chassis component failure! (eg fan or PSU): 0x%.2x\n", ((warnreg >> 24) & 0xFF)); | ||
270 | |||
271 | out += sprintf(out, "Battery: %s\n", (warnreg & 0x04) ? "Low!" : "OK"); | ||
272 | out += sprintf(out, "Temp low: %s\n", (warnreg & 0x02) ? "Exceeded!" : "OK"); | ||
273 | out += sprintf(out, "Temp mid: %s\n", (warnreg & 0x01) ? "Exceeded!" : "OK"); | ||
274 | |||
275 | len = out - page - off; | ||
276 | if (len < count) { | ||
277 | *eof = 1; | ||
278 | if (len <= 0) return 0; | ||
279 | } else { | ||
280 | len = count; | ||
281 | } | ||
282 | *start = page + off; | ||
283 | return len; | ||
284 | } | ||
285 | |||
286 | static int __init pdc_chassis_create_procfs(void) | ||
287 | { | ||
288 | printk(KERN_INFO "Enabling PDC chassis warnings support.\n"); | ||
289 | create_proc_read_entry("chassis", 0400, NULL, pdc_chassis_warn_pread, | ||
290 | NULL); | ||
291 | return 0; | ||
292 | } | ||
293 | |||
294 | __initcall(pdc_chassis_create_procfs); | ||
295 | |||
296 | #endif /* CONFIG_PROC_FS */ | ||
297 | #endif /* CONFIG_PDC_CHASSIS_WARN */ | ||