MIPS: CMP: activate CMP support

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>

5 files changed, 25 insertions, 62 deletions

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 64891f74019f..4368a723e2d0 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -229,7 +229,7 @@ config MIPS_MALTA
         select SYS_SUPPORTS_64BIT_KERNEL
         select SYS_SUPPORTS_BIG_ENDIAN
         select SYS_SUPPORTS_LITTLE_ENDIAN
-        select SYS_SUPPORTS_MIPS_CMP if BROKEN  # because SYNC_R4K is broken
+        select SYS_SUPPORTS_MIPS_CMP
         select SYS_SUPPORTS_MULTITHREADING
         select SYS_SUPPORTS_SMARTMIPS
         help
diff --git a/arch/mips/include/asm/amon.h b/arch/mips/include/asm/amon.h
new file mode 100644
index 000000000000..c3dc1a68dd8d
--- /dev/null
+++ b/arch/mips/include/asm/amon.h
@@ -0,0 +1,7 @@
+/*
+ * Amon support
+ */
+
+int amon_cpu_avail(int);
+void amon_cpu_start(int, unsigned long, unsigned long,
+                    unsigned long, unsigned long);
diff --git a/arch/mips/include/asm/gic.h b/arch/mips/include/asm/gic.h
index e8fdd92c52c7..10292e37c1f7 100644
--- a/arch/mips/include/asm/gic.h
+++ b/arch/mips/include/asm/gic.h
@@ -487,5 +487,7 @@ extern void gic_init(unsigned long gic_base_addr,
 
 extern unsigned int gic_get_int(void);
 extern void gic_send_ipi(unsigned int intr);
+extern unsigned int plat_ipi_call_int_xlate(unsigned int);
+extern unsigned int plat_ipi_resched_int_xlate(unsigned int);
 
 #endif /* _ASM_GICREGS_H */
diff --git a/arch/mips/kernel/smp-cmp.c b/arch/mips/kernel/smp-cmp.c
index 653be061b9ec..ad0ff5dc4d59 100644
--- a/arch/mips/kernel/smp-cmp.c
+++ b/arch/mips/kernel/smp-cmp.c
@@ -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);
 }
 
 /*
diff --git a/arch/mips/mti-malta/malta-int.c b/arch/mips/mti-malta/malta-int.c
index 4e14972dcfc4..bc0ba58acfd5 100644
--- a/arch/mips/mti-malta/malta-int.c
+++ b/arch/mips/mti-malta/malta-int.c
@@ -336,6 +336,16 @@ static int gic_resched_int_base;
 static int gic_call_int_base;
 #define GIC_RESCHED_INT(cpu) (gic_resched_int_base+(cpu))
 #define GIC_CALL_INT(cpu) (gic_call_int_base+(cpu))
+
+unsigned int plat_ipi_call_int_xlate(unsigned int cpu)
+{
+        return GIC_CALL_INT(cpu);
+}
+
+unsigned int plat_ipi_resched_int_xlate(unsigned int cpu)
+{
+        return GIC_RESCHED_INT(cpu);
+}
 #endif /* CONFIG_MIPS_MT_SMP */
 
 static struct irqaction i8259irq = {