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authorDavid S. Miller <davem@davemloft.net>2009-06-15 12:02:23 +0200
committerDavid S. Miller <davem@davemloft.net>2009-06-15 12:02:23 +0200
commit9cbc1cb8cd46ce1f7645b9de249b2ce8460129bb (patch)
tree8d104ec2a459346b99413b0b77421ca7b9936c1a /arch/arm/mach-realview/platsmp.c
parentpkt_sched: Rename PSCHED_US2NS and PSCHED_NS2US (diff)
parentMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/sam/kb... (diff)
downloadlinux-9cbc1cb8cd46ce1f7645b9de249b2ce8460129bb.tar.xz
linux-9cbc1cb8cd46ce1f7645b9de249b2ce8460129bb.zip
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts: Documentation/feature-removal-schedule.txt drivers/scsi/fcoe/fcoe.c net/core/drop_monitor.c net/core/net-traces.c
Diffstat (limited to 'arch/arm/mach-realview/platsmp.c')
-rw-r--r--arch/arm/mach-realview/platsmp.c64
1 files changed, 20 insertions, 44 deletions
diff --git a/arch/arm/mach-realview/platsmp.c b/arch/arm/mach-realview/platsmp.c
index ea3c75595fa9..ac0e83f1cc3a 100644
--- a/arch/arm/mach-realview/platsmp.c
+++ b/arch/arm/mach-realview/platsmp.c
@@ -19,10 +19,12 @@
#include <asm/cacheflush.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
+#include <asm/localtimer.h>
#include <mach/board-eb.h>
#include <mach/board-pb11mp.h>
-#include <mach/scu.h>
+#include <mach/board-pbx.h>
+#include <asm/smp_scu.h>
#include "core.h"
@@ -40,35 +42,19 @@ static void __iomem *scu_base_addr(void)
return __io_address(REALVIEW_EB11MP_SCU_BASE);
else if (machine_is_realview_pb11mp())
return __io_address(REALVIEW_TC11MP_SCU_BASE);
+ else if (machine_is_realview_pbx() &&
+ (core_tile_pbx11mp() || core_tile_pbxa9mp()))
+ return __io_address(REALVIEW_PBX_TILE_SCU_BASE);
else
return (void __iomem *)0;
}
-static unsigned int __init get_core_count(void)
+static inline unsigned int get_core_count(void)
{
- unsigned int ncores;
void __iomem *scu_base = scu_base_addr();
-
- if (scu_base) {
- ncores = __raw_readl(scu_base + SCU_CONFIG);
- ncores = (ncores & 0x03) + 1;
- } else
- ncores = 1;
-
- return ncores;
-}
-
-/*
- * Setup the SCU
- */
-static void scu_enable(void)
-{
- u32 scu_ctrl;
- void __iomem *scu_base = scu_base_addr();
-
- scu_ctrl = __raw_readl(scu_base + SCU_CTRL);
- scu_ctrl |= 1;
- __raw_writel(scu_ctrl, scu_base + SCU_CTRL);
+ if (scu_base)
+ return scu_get_core_count(scu_base);
+ return 1;
}
static DEFINE_SPINLOCK(boot_lock);
@@ -78,13 +64,6 @@ void __cpuinit platform_secondary_init(unsigned int cpu)
trace_hardirqs_off();
/*
- * the primary core may have used a "cross call" soft interrupt
- * to get this processor out of WFI in the BootMonitor - make
- * sure that we are no longer being sent this soft interrupt
- */
- smp_cross_call_done(cpumask_of_cpu(cpu));
-
- /*
* if any interrupts are already enabled for the primary
* core (e.g. timer irq), then they will not have been enabled
* for us: do so
@@ -136,7 +115,7 @@ int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
* Use smp_cross_call() for this, since there's little
* point duplicating the code here
*/
- smp_cross_call(cpumask_of_cpu(cpu));
+ smp_cross_call(cpumask_of(cpu));
timeout = jiffies + (1 * HZ);
while (time_before(jiffies, timeout)) {
@@ -191,7 +170,7 @@ void __init smp_init_cpus(void)
unsigned int i, ncores = get_core_count();
for (i = 0; i < ncores; i++)
- cpu_set(i, cpu_possible_map);
+ set_cpu_possible(i, true);
}
void __init smp_prepare_cpus(unsigned int max_cpus)
@@ -224,21 +203,12 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
if (max_cpus > ncores)
max_cpus = ncores;
-#ifdef CONFIG_LOCAL_TIMERS
- /*
- * Enable the local timer for primary CPU. If the device is
- * dummy (!CONFIG_LOCAL_TIMERS), it was already registers in
- * realview_timer_init
- */
- local_timer_setup();
-#endif
-
/*
* Initialise the present map, which describes the set of CPUs
* actually populated at the present time.
*/
for (i = 0; i < max_cpus; i++)
- cpu_set(i, cpu_present_map);
+ set_cpu_present(i, true);
/*
* Initialise the SCU if there are more than one CPU and let
@@ -248,7 +218,13 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
* WFI
*/
if (max_cpus > 1) {
- scu_enable();
+ /*
+ * Enable the local timer or broadcast device for the
+ * boot CPU, but only if we have more than one CPU.
+ */
+ percpu_timer_setup();
+
+ scu_enable(scu_base_addr());
poke_milo();
}
}