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MIPS: CMP: activate CMP support

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Most of the CMP support was added before, this mostly correct compile
problems but adds a platform specific translation for the interrupt number
based on cpu number.

Signed-off-by: Tim Anderson <tanderson@mvista.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Tim Anderson 2009-06-17 16:22:53 -07:00 • committed by Ralf Baechle
parent a214cef9a5
commit 0365070f05
5 changed files with 25 additions and 62 deletions
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66
arch/mips/kernel/smp-cmp.c
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@ -37,80 +37,24 @@
#include <asm/mipsregs.h>
#include <asm/mipsmtregs.h>
#include <asm/mips_mt.h>
/*
* Crude manipulation of the CPU masks to control which
* which CPU's are brought online during initialisation
*
* Beware... this needs to be called after CPU discovery
* but before CPU bringup
*/
static int __init allowcpus(char *str)
{
cpumask_t cpu_allow_map;
char buf[256];
int len;
cpus_clear(cpu_allow_map);
if (cpulist_parse(str, &cpu_allow_map) == 0) {
cpu_set(0, cpu_allow_map);
cpus_and(cpu_possible_map, cpu_possible_map, cpu_allow_map);
len = cpulist_scnprintf(buf, sizeof(buf)-1, &cpu_possible_map);
buf[len] = '\0';
pr_debug("Allowable CPUs: %s\n", buf);
return 1;
} else
return 0;
}
__setup("allowcpus=", allowcpus);
#include <asm/amon.h>
#include <asm/gic.h>
static void ipi_call_function(unsigned int cpu)
{
unsigned int action = 0;
pr_debug("CPU%d: %s cpu %d status %08x\n",
smp_processor_id(), __func__, cpu, read_c0_status());
switch (cpu) {
case 0:
action = GIC_IPI_EXT_INTR_CALLFNC_VPE0;
break;
case 1:
action = GIC_IPI_EXT_INTR_CALLFNC_VPE1;
break;
case 2:
action = GIC_IPI_EXT_INTR_CALLFNC_VPE2;
break;
case 3:
action = GIC_IPI_EXT_INTR_CALLFNC_VPE3;
break;
}
gic_send_ipi(action);
gic_send_ipi(plat_ipi_call_int_xlate(cpu));
}
static void ipi_resched(unsigned int cpu)
{
unsigned int action = 0;
pr_debug("CPU%d: %s cpu %d status %08x\n",
smp_processor_id(), __func__, cpu, read_c0_status());
switch (cpu) {
case 0:
action = GIC_IPI_EXT_INTR_RESCHED_VPE0;
break;
case 1:
action = GIC_IPI_EXT_INTR_RESCHED_VPE1;
break;
case 2:
action = GIC_IPI_EXT_INTR_RESCHED_VPE2;
break;
case 3:
action = GIC_IPI_EXT_INTR_RESCHED_VPE3;
break;
}
gic_send_ipi(action);
gic_send_ipi(plat_ipi_resched_int_xlate(cpu));
}
/*
@ -206,7 +150,7 @@ static void cmp_boot_secondary(int cpu, struct task_struct *idle)
(unsigned long)(gp + sizeof(struct thread_info)));
#endif
amon_cpu_start(cpu, pc, sp, gp, a0);
amon_cpu_start(cpu, pc, sp, (unsigned long)gp, a0);
}
/*