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authorLinus Torvalds <torvalds@linux-foundation.org>2011-01-21 16:23:52 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-21 16:23:52 -0500
commitd41ad6df44fbd01837211cee3273ce2f9445be6e (patch)
tree2c67f9202b0db775a9b38fc121f4190433e1aef0 /arch/powerpc/kernel/crash.c
parent3dece370ecc7c6152b3fdd21c6de28179f6e643d (diff)
parent8bfc5e36619e8464bf529137f834f55bd75de381 (diff)
Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (34 commits) powerpc/mpic: Fix mask/unmask timeout message powerpc/pseries: Add BNX2=m to defconfig powerpc: Enable 64kB pages and 1024 threads in pseries config powerpc: Disable mcount tracers in pseries defconfig powerpc/boot/dts: Install dts from the right directory powerpc: machine_check_generic is wrong on 64bit powerpc: Check RTAS extended log flag before checking length powerpc: Fix corruption when grabbing FWNMI data powerpc: Rework pseries machine check handler powerpc: Don't silently handle machine checks from userspace powerpc: Remove duplicate debugger hook in machine_check_exception powerpc: Never halt RTAS error logging after receiving an unrecoverable machine check powerpc: Don't force MSR_RI in machine_check_exception powerpc: Print 32 bits of DSISR in show_regs powerpc/kdump: Disable ftrace during kexec powerpc/kdump: Move crash_kexec_stop_spus to kdump crash handler powerpc/kexec: Remove empty ppc_md.machine_kexec_prepare powerpc/kexec: Don't initialise kexec hooks to default handlers powerpc/kdump: Remove ppc_md.machine_crash_shutdown powerpc/kexec: Remove ppc_md.machine_kexec ...
Diffstat (limited to 'arch/powerpc/kernel/crash.c')
-rw-r--r--arch/powerpc/kernel/crash.c72
1 files changed, 2 insertions, 70 deletions
diff --git a/arch/powerpc/kernel/crash.c b/arch/powerpc/kernel/crash.c
index 832c8c4db254..3d569e2aff18 100644
--- a/arch/powerpc/kernel/crash.c
+++ b/arch/powerpc/kernel/crash.c
@@ -48,7 +48,7 @@ int crashing_cpu = -1;
48static cpumask_t cpus_in_crash = CPU_MASK_NONE; 48static cpumask_t cpus_in_crash = CPU_MASK_NONE;
49cpumask_t cpus_in_sr = CPU_MASK_NONE; 49cpumask_t cpus_in_sr = CPU_MASK_NONE;
50 50
51#define CRASH_HANDLER_MAX 2 51#define CRASH_HANDLER_MAX 3
52/* NULL terminated list of shutdown handles */ 52/* NULL terminated list of shutdown handles */
53static crash_shutdown_t crash_shutdown_handles[CRASH_HANDLER_MAX+1]; 53static crash_shutdown_t crash_shutdown_handles[CRASH_HANDLER_MAX+1];
54static DEFINE_SPINLOCK(crash_handlers_lock); 54static DEFINE_SPINLOCK(crash_handlers_lock);
@@ -125,7 +125,7 @@ static void crash_kexec_prepare_cpus(int cpu)
125 smp_wmb(); 125 smp_wmb();
126 126
127 /* 127 /*
128 * FIXME: Until we will have the way to stop other CPUSs reliabally, 128 * FIXME: Until we will have the way to stop other CPUs reliably,
129 * the crash CPU will send an IPI and wait for other CPUs to 129 * the crash CPU will send an IPI and wait for other CPUs to
130 * respond. 130 * respond.
131 * Delay of at least 10 seconds. 131 * Delay of at least 10 seconds.
@@ -254,72 +254,6 @@ void crash_kexec_secondary(struct pt_regs *regs)
254 cpus_in_sr = CPU_MASK_NONE; 254 cpus_in_sr = CPU_MASK_NONE;
255} 255}
256#endif 256#endif
257#ifdef CONFIG_SPU_BASE
258
259#include <asm/spu.h>
260#include <asm/spu_priv1.h>
261
262struct crash_spu_info {
263 struct spu *spu;
264 u32 saved_spu_runcntl_RW;
265 u32 saved_spu_status_R;
266 u32 saved_spu_npc_RW;
267 u64 saved_mfc_sr1_RW;
268 u64 saved_mfc_dar;
269 u64 saved_mfc_dsisr;
270};
271
272#define CRASH_NUM_SPUS 16 /* Enough for current hardware */
273static struct crash_spu_info crash_spu_info[CRASH_NUM_SPUS];
274
275static void crash_kexec_stop_spus(void)
276{
277 struct spu *spu;
278 int i;
279 u64 tmp;
280
281 for (i = 0; i < CRASH_NUM_SPUS; i++) {
282 if (!crash_spu_info[i].spu)
283 continue;
284
285 spu = crash_spu_info[i].spu;
286
287 crash_spu_info[i].saved_spu_runcntl_RW =
288 in_be32(&spu->problem->spu_runcntl_RW);
289 crash_spu_info[i].saved_spu_status_R =
290 in_be32(&spu->problem->spu_status_R);
291 crash_spu_info[i].saved_spu_npc_RW =
292 in_be32(&spu->problem->spu_npc_RW);
293
294 crash_spu_info[i].saved_mfc_dar = spu_mfc_dar_get(spu);
295 crash_spu_info[i].saved_mfc_dsisr = spu_mfc_dsisr_get(spu);
296 tmp = spu_mfc_sr1_get(spu);
297 crash_spu_info[i].saved_mfc_sr1_RW = tmp;
298
299 tmp &= ~MFC_STATE1_MASTER_RUN_CONTROL_MASK;
300 spu_mfc_sr1_set(spu, tmp);
301
302 __delay(200);
303 }
304}
305
306void crash_register_spus(struct list_head *list)
307{
308 struct spu *spu;
309
310 list_for_each_entry(spu, list, full_list) {
311 if (WARN_ON(spu->number >= CRASH_NUM_SPUS))
312 continue;
313
314 crash_spu_info[spu->number].spu = spu;
315 }
316}
317
318#else
319static inline void crash_kexec_stop_spus(void)
320{
321}
322#endif /* CONFIG_SPU_BASE */
323 257
324/* 258/*
325 * Register a function to be called on shutdown. Only use this if you 259 * Register a function to be called on shutdown. Only use this if you
@@ -439,8 +373,6 @@ void default_machine_crash_shutdown(struct pt_regs *regs)
439 crash_shutdown_cpu = -1; 373 crash_shutdown_cpu = -1;
440 __debugger_fault_handler = old_handler; 374 __debugger_fault_handler = old_handler;
441 375
442 crash_kexec_stop_spus();
443
444 if (ppc_md.kexec_cpu_down) 376 if (ppc_md.kexec_cpu_down)
445 ppc_md.kexec_cpu_down(1, 0); 377 ppc_md.kexec_cpu_down(1, 0);
446} 378}