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authorPaul Mackerras <paulus@samba.org>2005-10-27 22:42:04 +1000
committerPaul Mackerras <paulus@samba.org>2005-10-27 22:42:04 +1000
commit80579e1f4a6b5f5dec92faa6c3e0645961c99091 (patch)
treed8fd5e184b54145811a92914c806544ad745087a /arch/powerpc/platforms/chrp
parenteef69e3cfb38d83166dbd8bcb12ededa1b6e78b6 (diff)
downloadop-kernel-dev-80579e1f4a6b5f5dec92faa6c3e0645961c99091.zip
op-kernel-dev-80579e1f4a6b5f5dec92faa6c3e0645961c99091.tar.gz
powerpc: 32-bit CHRP SMP fixes
Untested, but "should" work... at least this way it compiles. Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/platforms/chrp')
-rw-r--r--arch/powerpc/platforms/chrp/smp.c40
1 files changed, 34 insertions, 6 deletions
diff --git a/arch/powerpc/platforms/chrp/smp.c b/arch/powerpc/platforms/chrp/smp.c
index bf68282..31ee49c 100644
--- a/arch/powerpc/platforms/chrp/smp.c
+++ b/arch/powerpc/platforms/chrp/smp.c
@@ -32,15 +32,44 @@
#include <asm/time.h>
#include <asm/open_pic.h>
#include <asm/machdep.h>
+#include <asm/smp.h>
+#include <asm/mpic.h>
extern unsigned long smp_chrp_cpu_nr;
static int __init smp_chrp_probe(void)
{
- if (smp_chrp_cpu_nr > 1)
- openpic_request_IPIs();
+ struct device_node *cpus = NULL;
+ unsigned int *reg;
+ int reglen;
+ int ncpus = 0;
+ int cpuid;
+ unsigned int phys;
+
+ /* Count CPUs in the device-tree */
+ cpuid = 1; /* the boot cpu is logical cpu 0 */
+ while ((cpus = of_find_node_by_type(cpus, "cpu")) != NULL) {
+ phys = ncpus;
+ reg = (unsigned int *) get_property(cpus, "reg", &reglen);
+ if (reg && reglen >= sizeof(unsigned int))
+ /* hmmm, not having a reg property would be bad */
+ phys = *reg;
+ if (phys != boot_cpuid_phys) {
+ set_hard_smp_processor_id(cpuid, phys);
+ ++cpuid;
+ }
+ ++ncpus;
+ }
+
+ printk(KERN_INFO "CHRP SMP probe found %d cpus\n", ncpus);
+
+ /* Nothing more to do if less than 2 of them */
+ if (ncpus <= 1)
+ return 1;
+
+ mpic_request_ipis();
- return smp_chrp_cpu_nr;
+ return ncpus;
}
static void __devinit smp_chrp_kick_cpu(int nr)
@@ -51,8 +80,7 @@ static void __devinit smp_chrp_kick_cpu(int nr)
static void __devinit smp_chrp_setup_cpu(int cpu_nr)
{
- if (OpenPIC_Addr)
- do_openpic_setup_cpu();
+ mpic_setup_this_cpu();
}
static DEFINE_SPINLOCK(timebase_lock);
@@ -85,7 +113,7 @@ void __devinit smp_chrp_take_timebase(void)
/* CHRP with openpic */
struct smp_ops_t chrp_smp_ops = {
- .message_pass = smp_openpic_message_pass,
+ .message_pass = smp_mpic_message_pass,
.probe = smp_chrp_probe,
.kick_cpu = smp_chrp_kick_cpu,
.setup_cpu = smp_chrp_setup_cpu,
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