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[PATCH] cell: enable pause(0) in cpu_idle

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This patch enables support for pause(0) power management state
for the Cell Broadband Processor, which is import for power efficient
operation. The pervasive infrastructure will in the future enable
us to introduce more functionality specific to the Cell's
pervasive unit.

From: Maximino Aguilar <maguilar@us.ibm.com>
Signed-off-by: Arnd Bergmann <arndb@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Arnd Bergmann
2006-01-04 19:55:53 +00:00
committed by Paul Mackerras
parent 017e0fad3e
commit c902be71dc
12 changed files with 335 additions and 14 deletions
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2
arch/powerpc/kernel/cputable.c
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@@ -273,7 +273,7 @@ struct cpu_spec cpu_specs[] = {
.oprofile_model = &op_model_power4,
#endif
},
{ /* BE DD1.x */
{ /* Cell Broadband Engine */
.pvr_mask = 0xffff0000,
.pvr_value = 0x00700000,
.cpu_name = "Cell Broadband Engine",

6
arch/powerpc/kernel/traps.c
View File

@@ -230,8 +230,10 @@ void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr)
void system_reset_exception(struct pt_regs *regs)
{
/* See if any machine dependent calls */
if (ppc_md.system_reset_exception)
ppc_md.system_reset_exception(regs);
if (ppc_md.system_reset_exception) {
if (ppc_md.system_reset_exception(regs))
return;
}
die("System Reset", regs, SIGABRT);