1
2
3
4
5
6
7
8
9
10#include <linux/kernel.h>
11#include <linux/interrupt.h>
12
13#include <asm/machdep.h>
14#include <asm/page.h>
15#include <asm/firmware.h>
16#include <asm/kexec.h>
17#include <asm/mpic.h>
18#include <asm/xics.h>
19#include <asm/smp.h>
20#include <asm/plpar_wrappers.h>
21
22#include "pseries.h"
23
24static void pseries_kexec_cpu_down(int crash_shutdown, int secondary)
25{
26
27 if (firmware_has_feature(FW_FEATURE_SPLPAR) && !crash_shutdown) {
28 int ret;
29 int cpu = smp_processor_id();
30 int hwcpu = hard_smp_processor_id();
31
32 if (get_lppaca()->dtl_enable_mask) {
33 ret = unregister_dtl(hwcpu);
34 if (ret) {
35 pr_err("WARNING: DTL deregistration for cpu "
36 "%d (hw %d) failed with %d\n",
37 cpu, hwcpu, ret);
38 }
39 }
40
41 ret = unregister_slb_shadow(hwcpu);
42 if (ret) {
43 pr_err("WARNING: SLB shadow buffer deregistration "
44 "for cpu %d (hw %d) failed with %d\n",
45 cpu, hwcpu, ret);
46 }
47
48 ret = unregister_vpa(hwcpu);
49 if (ret) {
50 pr_err("WARNING: VPA deregistration for cpu %d "
51 "(hw %d) failed with %d\n", cpu, hwcpu, ret);
52 }
53 }
54}
55
56static void pseries_kexec_cpu_down_mpic(int crash_shutdown, int secondary)
57{
58 pseries_kexec_cpu_down(crash_shutdown, secondary);
59 mpic_teardown_this_cpu(secondary);
60}
61
62void __init setup_kexec_cpu_down_mpic(void)
63{
64 ppc_md.kexec_cpu_down = pseries_kexec_cpu_down_mpic;
65}
66
67static void pseries_kexec_cpu_down_xics(int crash_shutdown, int secondary)
68{
69 pseries_kexec_cpu_down(crash_shutdown, secondary);
70 xics_kexec_teardown_cpu(secondary);
71}
72
73void __init setup_kexec_cpu_down_xics(void)
74{
75 ppc_md.kexec_cpu_down = pseries_kexec_cpu_down_xics;
76}
77