2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
6 * Copyright (c) 2000-2004 Silicon Graphics, Inc. All Rights Reserved.
9 #include <linux/types.h>
10 #include <linux/kernel.h>
11 #include <linux/timer.h>
12 #include <linux/vmalloc.h>
15 #include <asm/sn/sn_sal.h>
18 * Interval for calling SAL to poll for errors that do NOT cause error
19 * interrupts. SAL will raise a CPEI if any errors are present that
22 #define CPEI_INTERVAL (5*HZ)
24 struct timer_list sn_cpei_timer;
25 void sn_init_cpei_timer(void);
27 /* Printing oemdata from mca uses data that is not passed through SAL, it is
28 * global. Only one user at a time.
30 static DECLARE_MUTEX(sn_oemdata_mutex);
31 static u8 **sn_oemdata;
32 static u64 *sn_oemdata_size, sn_oemdata_bufsize;
37 * This function is the callback routine that SAL calls to log error
38 * info for platform errors. buf is appended to sn_oemdata, resizing as
41 static int print_hook(const char *fmt, ...)
47 vsnprintf(buf, sizeof(buf), fmt, args);
50 while (*sn_oemdata_size + len + 1 > sn_oemdata_bufsize) {
51 u8 *newbuf = vmalloc(sn_oemdata_bufsize += 1000);
53 printk(KERN_ERR "%s: unable to extend sn_oemdata\n",
57 memcpy(newbuf, *sn_oemdata, *sn_oemdata_size);
61 memcpy(*sn_oemdata + *sn_oemdata_size, buf, len + 1);
62 *sn_oemdata_size += len;
66 static void sn_cpei_handler(int irq, void *devid, struct pt_regs *regs)
69 * this function's sole purpose is to call SAL when we receive
70 * a CE interrupt from SHUB or when the timer routine decides
71 * we need to call SAL to check for CEs.
76 ia64_sn_plat_cpei_handler();
79 static void sn_cpei_timer_handler(unsigned long dummy)
81 sn_cpei_handler(-1, NULL, NULL);
82 mod_timer(&sn_cpei_timer, jiffies + CPEI_INTERVAL);
85 void sn_init_cpei_timer(void)
87 init_timer(&sn_cpei_timer);
88 sn_cpei_timer.expires = jiffies + CPEI_INTERVAL;
89 sn_cpei_timer.function = sn_cpei_timer_handler;
90 add_timer(&sn_cpei_timer);
94 sn_platform_plat_specific_err_print(const u8 * sect_header, u8 ** oemdata,
97 down(&sn_oemdata_mutex);
99 sn_oemdata_size = oemdata_size;
100 sn_oemdata_bufsize = 0;
101 ia64_sn_plat_specific_err_print(print_hook, (char *)sect_header);
102 up(&sn_oemdata_mutex);
106 /* Callback when userspace salinfo wants to decode oem data via the platform
107 * kernel and/or prom.
109 int sn_salinfo_platform_oemdata(const u8 *sect_header, u8 **oemdata, u64 *oemdata_size)
111 efi_guid_t guid = *(efi_guid_t *)sect_header;
116 if (efi_guidcmp(guid, SAL_PLAT_SPECIFIC_ERR_SECT_GUID) == 0) {
117 sal_log_plat_specific_err_info_t *psei = (sal_log_plat_specific_err_info_t *)sect_header;
118 valid = psei->valid.oem_data;
119 } else if (efi_guidcmp(guid, SAL_PLAT_MEM_DEV_ERR_SECT_GUID) == 0) {
120 sal_log_mem_dev_err_info_t *mdei = (sal_log_mem_dev_err_info_t *)sect_header;
121 valid = mdei->valid.oem_data;
124 return sn_platform_plat_specific_err_print(sect_header, oemdata, oemdata_size);
129 static int __init sn_salinfo_init(void)
131 salinfo_platform_oemdata = &sn_salinfo_platform_oemdata;
135 module_init(sn_salinfo_init)