diff options
| author | David S. Miller <davem@sunset.davemloft.net> | 2006-02-09 20:46:22 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-03-20 01:12:09 -0800 |
| commit | 4cce4b7cc56abc3d7b269d09224b8297aad15138 (patch) | |
| tree | 69e0f38ef8e9be4328d0098dee1a86a665f8dad7 | |
| parent | 5fe91cf6254c8f23d90efb5fc11fff57dd5ab8dd (diff) | |
[SPARC64]: Fetch cpu mid properly on sun4v.
If there is a "cpuid" property, use that. Else suck
it out of the top bits of the "reg" property.
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | arch/sparc64/kernel/devices.c | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/arch/sparc64/kernel/devices.c b/arch/sparc64/kernel/devices.c index df9a1ca8fd7..ac11d872ef7 100644 --- a/arch/sparc64/kernel/devices.c +++ b/arch/sparc64/kernel/devices.c @@ -29,13 +29,30 @@ DEFINE_SPINLOCK(ns87303_lock); extern void cpu_probe(void); extern void central_probe(void); -static char *cpu_mid_prop(void) +static const char *cpu_mid_prop(void) { if (tlb_type == spitfire) return "upa-portid"; return "portid"; } +static int get_cpu_mid(int prom_node) +{ + if (tlb_type == hypervisor) { + struct linux_prom64_registers reg; + + if (prom_getproplen(prom_node, "cpuid") == 4) + return prom_getintdefault(prom_node, "cpuid", 0); + + prom_getproperty(prom_node, "reg", (char *) ®, sizeof(reg)); + return (reg.phys_addr >> 32) & 0x0fffffffUL; + } else { + const char *prop_name = cpu_mid_prop(); + + return prom_getintdefault(prom_node, prop_name, 0); + } +} + static int check_cpu_node(int nd, int *cur_inst, int (*compare)(int, int, void *), void *compare_arg, int *prom_node, int *mid) @@ -50,7 +67,7 @@ static int check_cpu_node(int nd, int *cur_inst, if (prom_node) *prom_node = nd; if (mid) - *mid = prom_getintdefault(nd, cpu_mid_prop(), 0); + *mid = get_cpu_mid(nd); return 0; } @@ -105,7 +122,7 @@ static int cpu_mid_compare(int nd, int instance, void *_arg) int desired_mid = (int) (long) _arg; int this_mid; - this_mid = prom_getintdefault(nd, cpu_mid_prop(), 0); + this_mid = get_cpu_mid(nd); if (this_mid == desired_mid) return 0; return -ENODEV; |