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authorOlof Johansson2013-02-05 13:10:39 -0800
committerOlof Johansson2013-02-05 13:10:39 -0800
commite9daa0ead197d39f024ceeb668b2407b8b1ca8b7 (patch)
tree24fca8c657105d2fa8cecad1ae2540f97497c454 /arch/arm/kernel
parentc8bfea3636215e50b519e6fdb29f1bf776b0f166 (diff)
parent031b77afc374cf1b86dbcda5dfa6e1bbb989836c (diff)
Merge tag 'tegra-for-3.9-soc-t114' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/soc
From Stepen Warren: ARM: tegra: add Tegra114 SoC support This pull request adds initial support for the Tegra114 SoC, which integrates a quad-core ARM Cortex-A15 CPU. I'm proud to observe that we posted the initial versions of these patches before the final official announcement of this chip. These patches are enough to boot with a UART-based console, support the Dalmore and Pluto reference/evaluation boards, instantiate the GPIO and pinctrl drivers, and enable a cpuidle state. As yet, no clocks or storage devices are supported, but patches for those will follow shortly. This pull request is based on (most of) the previous pull request with tag tegra-for-3.9-soc-cpuidle, followed by a merge of the previous pull request with tag tegra-for-3.9-scu-base-rework. * tag 'tegra-for-3.9-soc-t114' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra: (24 commits) ARM: DT: tegra114: add pinmux DT entry ARM: DT: tegra114: add GPIO DT entry ARM: tegra114: select PINCTRL for Tegra114 SoC ARM: tegra: add Tegra114 ARM_CPUIDLE_WFI_STATE support ARM: tegra: Add SMMU entry to Tegra114 DT ARM: tegra: add AHB entry to Tegra114 DT ARM: tegra: Add initial support for Tegra114 SoC. ARM: dt: tegra114: Add new board, Pluto ARM: dt: tegra114: Add new board, Dalmore ARM: dt: tegra114: Add new SoC base, Tegra114 SoC ARM: tegra: fuse: Add chip ID Tegra114 0x35 ARM: OMAP: Make use of available scu_a9_get_base() interface ARM: tegra: Skip scu_enable(scu_base) if not Cortex A9 ARM: Add API to detect SCU base address from CP15 ARM: tegra: Use DT /cpu node to detect number of CPU core ARM: tegra: Add CPU nodes to Tegra30 device tree ARM: tegra: Add CPU nodes to Tegra20 device tree ARM: perf: simplify __hw_perf_event_init err handling ARM: perf: remove unnecessary checks for idx < 0 ARM: perf: handle armpmu_register failing ... Signed-off-by: Olof Johansson <olof@lixom.net> Remove/add conflict in arch/arm/mach-tegra/common.c resolved. Remove/remove conflict in arch/arm/mach-tegra/platsmp.c. Leave the empty stub function for now since removing it in the merge commit is confusing; will be cleaned up in a separate commit. # # It looks like you may be committing a merge. # If this is not correct, please remove the file # .git/MERGE_HEAD # and try again.
Diffstat (limited to 'arch/arm/kernel')
-rw-r--r--arch/arm/kernel/perf_event.c16
-rw-r--r--arch/arm/kernel/perf_event_cpu.c51
-rw-r--r--arch/arm/kernel/perf_event_v6.c4
-rw-r--r--arch/arm/kernel/perf_event_v7.c18
-rw-r--r--arch/arm/kernel/perf_event_xscale.c2
5 files changed, 42 insertions, 49 deletions
diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c
index f9e8657dd241..31e0eb353cd8 100644
--- a/arch/arm/kernel/perf_event.c
+++ b/arch/arm/kernel/perf_event.c
@@ -149,12 +149,6 @@ again:
static void
armpmu_read(struct perf_event *event)
{
- struct hw_perf_event *hwc = &event->hw;
-
- /* Don't read disabled counters! */
- if (hwc->idx < 0)
- return;
-
armpmu_event_update(event);
}
@@ -207,8 +201,6 @@ armpmu_del(struct perf_event *event, int flags)
struct hw_perf_event *hwc = &event->hw;
int idx = hwc->idx;
- WARN_ON(idx < 0);
-
armpmu_stop(event, PERF_EF_UPDATE);
hw_events->events[idx] = NULL;
clear_bit(idx, hw_events->used_mask);
@@ -358,7 +350,7 @@ __hw_perf_event_init(struct perf_event *event)
{
struct arm_pmu *armpmu = to_arm_pmu(event->pmu);
struct hw_perf_event *hwc = &event->hw;
- int mapping, err;
+ int mapping;
mapping = armpmu->map_event(event);
@@ -407,14 +399,12 @@ __hw_perf_event_init(struct perf_event *event)
local64_set(&hwc->period_left, hwc->sample_period);
}
- err = 0;
if (event->group_leader != event) {
- err = validate_group(event);
- if (err)
+ if (validate_group(event) != 0);
return -EINVAL;
}
- return err;
+ return 0;
}
static int armpmu_event_init(struct perf_event *event)
diff --git a/arch/arm/kernel/perf_event_cpu.c b/arch/arm/kernel/perf_event_cpu.c
index 5f6620684e25..1f2740e3dbc0 100644
--- a/arch/arm/kernel/perf_event_cpu.c
+++ b/arch/arm/kernel/perf_event_cpu.c
@@ -147,7 +147,7 @@ static void cpu_pmu_init(struct arm_pmu *cpu_pmu)
cpu_pmu->free_irq = cpu_pmu_free_irq;
/* Ensure the PMU has sane values out of reset. */
- if (cpu_pmu && cpu_pmu->reset)
+ if (cpu_pmu->reset)
on_each_cpu(cpu_pmu->reset, cpu_pmu, 1);
}
@@ -201,48 +201,46 @@ static struct platform_device_id cpu_pmu_plat_device_ids[] = {
static int probe_current_pmu(struct arm_pmu *pmu)
{
int cpu = get_cpu();
- unsigned long cpuid = read_cpuid_id();
- unsigned long implementor = (cpuid & 0xFF000000) >> 24;
- unsigned long part_number = (cpuid & 0xFFF0);
+ unsigned long implementor = read_cpuid_implementor();
+ unsigned long part_number = read_cpuid_part_number();
int ret = -ENODEV;
pr_info("probing PMU on CPU %d\n", cpu);
/* ARM Ltd CPUs. */
- if (0x41 == implementor) {
+ if (implementor == ARM_CPU_IMP_ARM) {
switch (part_number) {
- case 0xB360: /* ARM1136 */
- case 0xB560: /* ARM1156 */
- case 0xB760: /* ARM1176 */
+ case ARM_CPU_PART_ARM1136:
+ case ARM_CPU_PART_ARM1156:
+ case ARM_CPU_PART_ARM1176:
ret = armv6pmu_init(pmu);
break;
- case 0xB020: /* ARM11mpcore */
+ case ARM_CPU_PART_ARM11MPCORE:
ret = armv6mpcore_pmu_init(pmu);
break;
- case 0xC080: /* Cortex-A8 */
+ case ARM_CPU_PART_CORTEX_A8:
ret = armv7_a8_pmu_init(pmu);
break;
- case 0xC090: /* Cortex-A9 */
+ case ARM_CPU_PART_CORTEX_A9:
ret = armv7_a9_pmu_init(pmu);
break;
- case 0xC050: /* Cortex-A5 */
+ case ARM_CPU_PART_CORTEX_A5:
ret = armv7_a5_pmu_init(pmu);
break;
- case 0xC0F0: /* Cortex-A15 */
+ case ARM_CPU_PART_CORTEX_A15:
ret = armv7_a15_pmu_init(pmu);
break;
- case 0xC070: /* Cortex-A7 */
+ case ARM_CPU_PART_CORTEX_A7:
ret = armv7_a7_pmu_init(pmu);
break;
}
/* Intel CPUs [xscale]. */
- } else if (0x69 == implementor) {
- part_number = (cpuid >> 13) & 0x7;
- switch (part_number) {
- case 1:
+ } else if (implementor == ARM_CPU_IMP_INTEL) {
+ switch (xscale_cpu_arch_version()) {
+ case ARM_CPU_XSCALE_ARCH_V1:
ret = xscale1pmu_init(pmu);
break;
- case 2:
+ case ARM_CPU_XSCALE_ARCH_V2:
ret = xscale2pmu_init(pmu);
break;
}
@@ -279,17 +277,22 @@ static int cpu_pmu_device_probe(struct platform_device *pdev)
}
if (ret) {
- pr_info("failed to register PMU devices!");
- kfree(pmu);
- return ret;
+ pr_info("failed to probe PMU!");
+ goto out_free;
}
cpu_pmu = pmu;
cpu_pmu->plat_device = pdev;
cpu_pmu_init(cpu_pmu);
- armpmu_register(cpu_pmu, PERF_TYPE_RAW);
+ ret = armpmu_register(cpu_pmu, PERF_TYPE_RAW);
- return 0;
+ if (!ret)
+ return 0;
+
+out_free:
+ pr_info("failed to register PMU devices!");
+ kfree(pmu);
+ return ret;
}
static struct platform_driver cpu_pmu_driver = {
diff --git a/arch/arm/kernel/perf_event_v6.c b/arch/arm/kernel/perf_event_v6.c
index 041d0526a288..03664b0e8fa4 100644
--- a/arch/arm/kernel/perf_event_v6.c
+++ b/arch/arm/kernel/perf_event_v6.c
@@ -106,7 +106,7 @@ static const unsigned armv6_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
- [C(RESULT_MISS)] = ARMV6_PERFCTR_ICACHE_MISS,
+ [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
@@ -259,7 +259,7 @@ static const unsigned armv6mpcore_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
- [C(RESULT_MISS)] = ARMV6MPCORE_PERFCTR_ICACHE_MISS,
+ [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
diff --git a/arch/arm/kernel/perf_event_v7.c b/arch/arm/kernel/perf_event_v7.c
index 4fbc757d9cff..8c79a9e70b83 100644
--- a/arch/arm/kernel/perf_event_v7.c
+++ b/arch/arm/kernel/perf_event_v7.c
@@ -157,8 +157,8 @@ static const unsigned armv7_a8_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
[C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL,
},
[C(OP_WRITE)] = {
- [C(RESULT_ACCESS)] = ARMV7_A8_PERFCTR_L1_ICACHE_ACCESS,
- [C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL,
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
@@ -282,7 +282,7 @@ static const unsigned armv7_a9_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
- [C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL,
+ [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
@@ -399,8 +399,8 @@ static const unsigned armv7_a5_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
[C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL,
},
[C(OP_WRITE)] = {
- [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_ICACHE_ACCESS,
- [C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL,
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
/*
* The prefetch counters don't differentiate between the I
@@ -527,8 +527,8 @@ static const unsigned armv7_a15_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
[C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL,
},
[C(OP_WRITE)] = {
- [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_ICACHE_ACCESS,
- [C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL,
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
@@ -651,8 +651,8 @@ static const unsigned armv7_a7_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
[C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL,
},
[C(OP_WRITE)] = {
- [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_ICACHE_ACCESS,
- [C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL,
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
diff --git a/arch/arm/kernel/perf_event_xscale.c b/arch/arm/kernel/perf_event_xscale.c
index 2b0fe30ec12e..63990c42fac9 100644
--- a/arch/arm/kernel/perf_event_xscale.c
+++ b/arch/arm/kernel/perf_event_xscale.c
@@ -83,7 +83,7 @@ static const unsigned xscale_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
- [C(RESULT_MISS)] = XSCALE_PERFCTR_ICACHE_MISS,
+ [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,