diff options
| author | Paul Mackerras <paulus@samba.org> | 2005-10-27 16:42:04 +0400 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2005-10-27 16:42:04 +0400 |
| commit | 80579e1f4a6b5f5dec92faa6c3e0645961c99091 (patch) | |
| tree | d8fd5e184b54145811a92914c806544ad745087a /arch/powerpc/platforms/chrp/smp.c | |
| parent | eef69e3cfb38d83166dbd8bcb12ededa1b6e78b6 (diff) | |
| download | linux-80579e1f4a6b5f5dec92faa6c3e0645961c99091.tar.xz | |
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/smp.c')
| -rw-r--r-- | arch/powerpc/platforms/chrp/smp.c | 40 |
1 files changed, 34 insertions, 6 deletions
diff --git a/arch/powerpc/platforms/chrp/smp.c b/arch/powerpc/platforms/chrp/smp.c index bf68282670dd..31ee49c25014 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", ®len); + 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, |