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-rw-r--r--arch/sparc64/kernel/sstate.c127
1 files changed, 0 insertions, 127 deletions
diff --git a/arch/sparc64/kernel/sstate.c b/arch/sparc64/kernel/sstate.c
deleted file mode 100644
index 8cdbe5946b43..000000000000
--- a/arch/sparc64/kernel/sstate.c
+++ /dev/null
@@ -1,127 +0,0 @@
1/* sstate.c: System soft state support.
2 *
3 * Copyright (C) 2007, 2008 David S. Miller <davem@davemloft.net>
4 */
5
6#include <linux/kernel.h>
7#include <linux/notifier.h>
8#include <linux/reboot.h>
9#include <linux/init.h>
10
11#include <asm/hypervisor.h>
12#include <asm/spitfire.h>
13#include <asm/oplib.h>
14#include <asm/head.h>
15#include <asm/io.h>
16
17static int hv_supports_soft_state;
18
19static unsigned long kimage_addr_to_ra(const char *p)
20{
21 unsigned long val = (unsigned long) p;
22
23 return kern_base + (val - KERNBASE);
24}
25
26static void do_set_sstate(unsigned long state, const char *msg)
27{
28 unsigned long err;
29
30 if (!hv_supports_soft_state)
31 return;
32
33 err = sun4v_mach_set_soft_state(state, kimage_addr_to_ra(msg));
34 if (err) {
35 printk(KERN_WARNING "SSTATE: Failed to set soft-state to "
36 "state[%lx] msg[%s], err=%lu\n",
37 state, msg, err);
38 }
39}
40
41static const char booting_msg[32] __attribute__((aligned(32))) =
42 "Linux booting";
43static const char running_msg[32] __attribute__((aligned(32))) =
44 "Linux running";
45static const char halting_msg[32] __attribute__((aligned(32))) =
46 "Linux halting";
47static const char poweroff_msg[32] __attribute__((aligned(32))) =
48 "Linux powering off";
49static const char rebooting_msg[32] __attribute__((aligned(32))) =
50 "Linux rebooting";
51static const char panicing_msg[32] __attribute__((aligned(32))) =
52 "Linux panicing";
53
54static int sstate_reboot_call(struct notifier_block *np, unsigned long type, void *_unused)
55{
56 const char *msg;
57
58 switch (type) {
59 case SYS_DOWN:
60 default:
61 msg = rebooting_msg;
62 break;
63
64 case SYS_HALT:
65 msg = halting_msg;
66 break;
67
68 case SYS_POWER_OFF:
69 msg = poweroff_msg;
70 break;
71 }
72
73 do_set_sstate(HV_SOFT_STATE_TRANSITION, msg);
74
75 return NOTIFY_OK;
76}
77
78static struct notifier_block sstate_reboot_notifier = {
79 .notifier_call = sstate_reboot_call,
80};
81
82static int sstate_panic_event(struct notifier_block *n, unsigned long event, void *ptr)
83{
84 do_set_sstate(HV_SOFT_STATE_TRANSITION, panicing_msg);
85
86 return NOTIFY_DONE;
87}
88
89static struct notifier_block sstate_panic_block = {
90 .notifier_call = sstate_panic_event,
91 .priority = INT_MAX,
92};
93
94static int __init sstate_init(void)
95{
96 unsigned long major, minor;
97
98 if (tlb_type != hypervisor)
99 return 0;
100
101 major = 1;
102 minor = 0;
103 if (sun4v_hvapi_register(HV_GRP_SOFT_STATE, major, &minor))
104 return 0;
105
106 hv_supports_soft_state = 1;
107
108 prom_sun4v_guest_soft_state();
109
110 do_set_sstate(HV_SOFT_STATE_TRANSITION, booting_msg);
111
112 atomic_notifier_chain_register(&panic_notifier_list,
113 &sstate_panic_block);
114 register_reboot_notifier(&sstate_reboot_notifier);
115
116 return 0;
117}
118
119core_initcall(sstate_init);
120
121static int __init sstate_running(void)
122{
123 do_set_sstate(HV_SOFT_STATE_NORMAL, running_msg);
124 return 0;
125}
126
127late_initcall(sstate_running);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-20 22:35:33 -0500