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Diffstat (limited to 'ANDROID_3.4.5/arch/s390/kernel/lgr.c')
-rw-r--r--ANDROID_3.4.5/arch/s390/kernel/lgr.c200
1 files changed, 0 insertions, 200 deletions
diff --git a/ANDROID_3.4.5/arch/s390/kernel/lgr.c b/ANDROID_3.4.5/arch/s390/kernel/lgr.c
deleted file mode 100644
index 87f080b1..00000000
--- a/ANDROID_3.4.5/arch/s390/kernel/lgr.c
+++ /dev/null
@@ -1,200 +0,0 @@
-/*
- * Linux Guest Relocation (LGR) detection
- *
- * Copyright IBM Corp. 2012
- * Author(s): Michael Holzheu <holzheu@linux.vnet.ibm.com>
- */
-
-#include <linux/module.h>
-#include <linux/timer.h>
-#include <linux/slab.h>
-#include <asm/facility.h>
-#include <asm/sysinfo.h>
-#include <asm/ebcdic.h>
-#include <asm/debug.h>
-#include <asm/ipl.h>
-
-#define LGR_TIMER_INTERVAL_SECS (30 * 60)
-#define VM_LEVEL_MAX 2 /* Maximum is 8, but we only record two levels */
-
-/*
- * LGR info: Contains stfle and stsi data
- */
-struct lgr_info {
- /* Bit field with facility information: 4 DWORDs are stored */
- u64 stfle_fac_list[4];
- /* Level of system (1 = CEC, 2 = LPAR, 3 = z/VM */
- u32 level;
- /* Level 1: CEC info (stsi 1.1.1) */
- char manufacturer[16];
- char type[4];
- char sequence[16];
- char plant[4];
- char model[16];
- /* Level 2: LPAR info (stsi 2.2.2) */
- u16 lpar_number;
- char name[8];
- /* Level 3: VM info (stsi 3.2.2) */
- u8 vm_count;
- struct {
- char name[8];
- char cpi[16];
- } vm[VM_LEVEL_MAX];
-} __packed __aligned(8);
-
-/*
- * LGR globals
- */
-static void *lgr_page;
-static struct lgr_info lgr_info_last;
-static struct lgr_info lgr_info_cur;
-static struct debug_info *lgr_dbf;
-
-/*
- * Return number of valid stsi levels
- */
-static inline int stsi_0(void)
-{
- int rc = stsi(NULL, 0, 0, 0);
-
- return rc == -ENOSYS ? rc : (((unsigned int) rc) >> 28);
-}
-
-/*
- * Copy buffer and then convert it to ASCII
- */
-static void cpascii(char *dst, char *src, int size)
-{
- memcpy(dst, src, size);
- EBCASC(dst, size);
-}
-
-/*
- * Fill LGR info with 1.1.1 stsi data
- */
-static void lgr_stsi_1_1_1(struct lgr_info *lgr_info)
-{
- struct sysinfo_1_1_1 *si = lgr_page;
-
- if (stsi(si, 1, 1, 1) == -ENOSYS)
- return;
- cpascii(lgr_info->manufacturer, si->manufacturer,
- sizeof(si->manufacturer));
- cpascii(lgr_info->type, si->type, sizeof(si->type));
- cpascii(lgr_info->model, si->model, sizeof(si->model));
- cpascii(lgr_info->sequence, si->sequence, sizeof(si->sequence));
- cpascii(lgr_info->plant, si->plant, sizeof(si->plant));
-}
-
-/*
- * Fill LGR info with 2.2.2 stsi data
- */
-static void lgr_stsi_2_2_2(struct lgr_info *lgr_info)
-{
- struct sysinfo_2_2_2 *si = lgr_page;
-
- if (stsi(si, 2, 2, 2) == -ENOSYS)
- return;
- cpascii(lgr_info->name, si->name, sizeof(si->name));
- memcpy(&lgr_info->lpar_number, &si->lpar_number,
- sizeof(lgr_info->lpar_number));
-}
-
-/*
- * Fill LGR info with 3.2.2 stsi data
- */
-static void lgr_stsi_3_2_2(struct lgr_info *lgr_info)
-{
- struct sysinfo_3_2_2 *si = lgr_page;
- int i;
-
- if (stsi(si, 3, 2, 2) == -ENOSYS)
- return;
- for (i = 0; i < min_t(u8, si->count, VM_LEVEL_MAX); i++) {
- cpascii(lgr_info->vm[i].name, si->vm[i].name,
- sizeof(si->vm[i].name));
- cpascii(lgr_info->vm[i].cpi, si->vm[i].cpi,
- sizeof(si->vm[i].cpi));
- }
- lgr_info->vm_count = si->count;
-}
-
-/*
- * Fill LGR info with current data
- */
-static void lgr_info_get(struct lgr_info *lgr_info)
-{
- memset(lgr_info, 0, sizeof(*lgr_info));
- stfle(lgr_info->stfle_fac_list, ARRAY_SIZE(lgr_info->stfle_fac_list));
- lgr_info->level = stsi_0();
- if (lgr_info->level == -ENOSYS)
- return;
- if (lgr_info->level >= 1)
- lgr_stsi_1_1_1(lgr_info);
- if (lgr_info->level >= 2)
- lgr_stsi_2_2_2(lgr_info);
- if (lgr_info->level >= 3)
- lgr_stsi_3_2_2(lgr_info);
-}
-
-/*
- * Check if LGR info has changed and if yes log new LGR info to s390dbf
- */
-void lgr_info_log(void)
-{
- static DEFINE_SPINLOCK(lgr_info_lock);
- unsigned long flags;
-
- if (!spin_trylock_irqsave(&lgr_info_lock, flags))
- return;
- lgr_info_get(&lgr_info_cur);
- if (memcmp(&lgr_info_last, &lgr_info_cur, sizeof(lgr_info_cur)) != 0) {
- debug_event(lgr_dbf, 1, &lgr_info_cur, sizeof(lgr_info_cur));
- lgr_info_last = lgr_info_cur;
- }
- spin_unlock_irqrestore(&lgr_info_lock, flags);
-}
-EXPORT_SYMBOL_GPL(lgr_info_log);
-
-static void lgr_timer_set(void);
-
-/*
- * LGR timer callback
- */
-static void lgr_timer_fn(unsigned long ignored)
-{
- lgr_info_log();
- lgr_timer_set();
-}
-
-static struct timer_list lgr_timer =
- TIMER_DEFERRED_INITIALIZER(lgr_timer_fn, 0, 0);
-
-/*
- * Setup next LGR timer
- */
-static void lgr_timer_set(void)
-{
- mod_timer(&lgr_timer, jiffies + LGR_TIMER_INTERVAL_SECS * HZ);
-}
-
-/*
- * Initialize LGR: Add s390dbf, write initial lgr_info and setup timer
- */
-static int __init lgr_init(void)
-{
- lgr_page = (void *) __get_free_pages(GFP_KERNEL, 0);
- if (!lgr_page)
- return -ENOMEM;
- lgr_dbf = debug_register("lgr", 1, 1, sizeof(struct lgr_info));
- if (!lgr_dbf) {
- free_page((unsigned long) lgr_page);
- return -ENOMEM;
- }
- debug_register_view(lgr_dbf, &debug_hex_ascii_view);
- lgr_info_get(&lgr_info_last);
- debug_event(lgr_dbf, 1, &lgr_info_last, sizeof(lgr_info_last));
- lgr_timer_set();
- return 0;
-}
-module_init(lgr_init);