1 files changed, 0 insertions, 748 deletions

diff --git a/arch/arm/kernel/perf_event_xscale.c b/arch/arm/kernel/perf_event_xscale.c
deleted file mode 100644
index 7a2ba1c689a7..000000000000
--- a/arch/arm/kernel/perf_event_xscale.c
+++ /dev/null
@@ -1,748 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * ARMv5 [xscale] Performance counter handling code.
- *
- * Copyright (C) 2010, ARM Ltd., Will Deacon <will.deacon@arm.com>
- *
- * Based on the previous xscale OProfile code.
- *
- * There are two variants of the xscale PMU that we support:
- * 	- xscale1pmu: 2 event counters and a cycle counter
- * 	- xscale2pmu: 4 event counters and a cycle counter
- * The two variants share event definitions, but have different
- * PMU structures.
- */
-
-#ifdef CONFIG_CPU_XSCALE
-
-#include <asm/cputype.h>
-#include <asm/irq_regs.h>
-
-#include <linux/of.h>
-#include <linux/perf/arm_pmu.h>
-#include <linux/platform_device.h>
-
-enum xscale_perf_types {
-	XSCALE_PERFCTR_ICACHE_MISS		= 0x00,
-	XSCALE_PERFCTR_ICACHE_NO_DELIVER	= 0x01,
-	XSCALE_PERFCTR_DATA_STALL		= 0x02,
-	XSCALE_PERFCTR_ITLB_MISS		= 0x03,
-	XSCALE_PERFCTR_DTLB_MISS		= 0x04,
-	XSCALE_PERFCTR_BRANCH			= 0x05,
-	XSCALE_PERFCTR_BRANCH_MISS		= 0x06,
-	XSCALE_PERFCTR_INSTRUCTION		= 0x07,
-	XSCALE_PERFCTR_DCACHE_FULL_STALL	= 0x08,
-	XSCALE_PERFCTR_DCACHE_FULL_STALL_CONTIG	= 0x09,
-	XSCALE_PERFCTR_DCACHE_ACCESS		= 0x0A,
-	XSCALE_PERFCTR_DCACHE_MISS		= 0x0B,
-	XSCALE_PERFCTR_DCACHE_WRITE_BACK	= 0x0C,
-	XSCALE_PERFCTR_PC_CHANGED		= 0x0D,
-	XSCALE_PERFCTR_BCU_REQUEST		= 0x10,
-	XSCALE_PERFCTR_BCU_FULL			= 0x11,
-	XSCALE_PERFCTR_BCU_DRAIN		= 0x12,
-	XSCALE_PERFCTR_BCU_ECC_NO_ELOG		= 0x14,
-	XSCALE_PERFCTR_BCU_1_BIT_ERR		= 0x15,
-	XSCALE_PERFCTR_RMW			= 0x16,
-	/* XSCALE_PERFCTR_CCNT is not hardware defined */
-	XSCALE_PERFCTR_CCNT			= 0xFE,
-	XSCALE_PERFCTR_UNUSED			= 0xFF,
-};
-
-enum xscale_counters {
-	XSCALE_CYCLE_COUNTER	= 0,
-	XSCALE_COUNTER0,
-	XSCALE_COUNTER1,
-	XSCALE_COUNTER2,
-	XSCALE_COUNTER3,
-};
-
-static const unsigned xscale_perf_map[PERF_COUNT_HW_MAX] = {
-	PERF_MAP_ALL_UNSUPPORTED,
-	[PERF_COUNT_HW_CPU_CYCLES]		= XSCALE_PERFCTR_CCNT,
-	[PERF_COUNT_HW_INSTRUCTIONS]		= XSCALE_PERFCTR_INSTRUCTION,
-	[PERF_COUNT_HW_BRANCH_INSTRUCTIONS]	= XSCALE_PERFCTR_BRANCH,
-	[PERF_COUNT_HW_BRANCH_MISSES]		= XSCALE_PERFCTR_BRANCH_MISS,
-	[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND]	= XSCALE_PERFCTR_ICACHE_NO_DELIVER,
-};
-
-static const unsigned xscale_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
-					   [PERF_COUNT_HW_CACHE_OP_MAX]
-					   [PERF_COUNT_HW_CACHE_RESULT_MAX] = {
-	PERF_CACHE_MAP_ALL_UNSUPPORTED,
-
-	[C(L1D)][C(OP_READ)][C(RESULT_ACCESS)]	= XSCALE_PERFCTR_DCACHE_ACCESS,
-	[C(L1D)][C(OP_READ)][C(RESULT_MISS)]	= XSCALE_PERFCTR_DCACHE_MISS,
-	[C(L1D)][C(OP_WRITE)][C(RESULT_ACCESS)]	= XSCALE_PERFCTR_DCACHE_ACCESS,
-	[C(L1D)][C(OP_WRITE)][C(RESULT_MISS)]	= XSCALE_PERFCTR_DCACHE_MISS,
-
-	[C(L1I)][C(OP_READ)][C(RESULT_MISS)]	= XSCALE_PERFCTR_ICACHE_MISS,
-
-	[C(DTLB)][C(OP_READ)][C(RESULT_MISS)]	= XSCALE_PERFCTR_DTLB_MISS,
-	[C(DTLB)][C(OP_WRITE)][C(RESULT_MISS)]	= XSCALE_PERFCTR_DTLB_MISS,
-
-	[C(ITLB)][C(OP_READ)][C(RESULT_MISS)]	= XSCALE_PERFCTR_ITLB_MISS,
-	[C(ITLB)][C(OP_WRITE)][C(RESULT_MISS)]	= XSCALE_PERFCTR_ITLB_MISS,
-};
-
-#define	XSCALE_PMU_ENABLE	0x001
-#define XSCALE_PMN_RESET	0x002
-#define	XSCALE_CCNT_RESET	0x004
-#define	XSCALE_PMU_RESET	(CCNT_RESET | PMN_RESET)
-#define XSCALE_PMU_CNT64	0x008
-
-#define XSCALE1_OVERFLOWED_MASK	0x700
-#define XSCALE1_CCOUNT_OVERFLOW	0x400
-#define XSCALE1_COUNT0_OVERFLOW	0x100
-#define XSCALE1_COUNT1_OVERFLOW	0x200
-#define XSCALE1_CCOUNT_INT_EN	0x040
-#define XSCALE1_COUNT0_INT_EN	0x010
-#define XSCALE1_COUNT1_INT_EN	0x020
-#define XSCALE1_COUNT0_EVT_SHFT	12
-#define XSCALE1_COUNT0_EVT_MASK	(0xff << XSCALE1_COUNT0_EVT_SHFT)
-#define XSCALE1_COUNT1_EVT_SHFT	20
-#define XSCALE1_COUNT1_EVT_MASK	(0xff << XSCALE1_COUNT1_EVT_SHFT)
-
-static inline u32
-xscale1pmu_read_pmnc(void)
-{
-	u32 val;
-	asm volatile("mrc p14, 0, %0, c0, c0, 0" : "=r" (val));
-	return val;
-}
-
-static inline void
-xscale1pmu_write_pmnc(u32 val)
-{
-	/* upper 4bits and 7, 11 are write-as-0 */
-	val &= 0xffff77f;
-	asm volatile("mcr p14, 0, %0, c0, c0, 0" : : "r" (val));
-}
-
-static inline int
-xscale1_pmnc_counter_has_overflowed(unsigned long pmnc,
-					enum xscale_counters counter)
-{
-	int ret = 0;
-
-	switch (counter) {
-	case XSCALE_CYCLE_COUNTER:
-		ret = pmnc & XSCALE1_CCOUNT_OVERFLOW;
-		break;
-	case XSCALE_COUNTER0:
-		ret = pmnc & XSCALE1_COUNT0_OVERFLOW;
-		break;
-	case XSCALE_COUNTER1:
-		ret = pmnc & XSCALE1_COUNT1_OVERFLOW;
-		break;
-	default:
-		WARN_ONCE(1, "invalid counter number (%d)\n", counter);
-	}
-
-	return ret;
-}
-
-static irqreturn_t
-xscale1pmu_handle_irq(struct arm_pmu *cpu_pmu)
-{
-	unsigned long pmnc;
-	struct perf_sample_data data;
-	struct pmu_hw_events *cpuc = this_cpu_ptr(cpu_pmu->hw_events);
-	struct pt_regs *regs;
-	int idx;
-
-	/*
-	 * NOTE: there's an A stepping erratum that states if an overflow
-	 *       bit already exists and another occurs, the previous
-	 *       Overflow bit gets cleared. There's no workaround.
-	 *	 Fixed in B stepping or later.
-	 */
-	pmnc = xscale1pmu_read_pmnc();
-
-	/*
-	 * Write the value back to clear the overflow flags. Overflow
-	 * flags remain in pmnc for use below. We also disable the PMU
-	 * while we process the interrupt.
-	 */
-	xscale1pmu_write_pmnc(pmnc & ~XSCALE_PMU_ENABLE);
-
-	if (!(pmnc & XSCALE1_OVERFLOWED_MASK))
-		return IRQ_NONE;
-
-	regs = get_irq_regs();
-
-	for (idx = 0; idx < cpu_pmu->num_events; ++idx) {
-		struct perf_event *event = cpuc->events[idx];
-		struct hw_perf_event *hwc;
-
-		if (!event)
-			continue;
-
-		if (!xscale1_pmnc_counter_has_overflowed(pmnc, idx))
-			continue;
-
-		hwc = &event->hw;
-		armpmu_event_update(event);
-		perf_sample_data_init(&data, 0, hwc->last_period);
-		if (!armpmu_event_set_period(event))
-			continue;
-
-		if (perf_event_overflow(event, &data, regs))
-			cpu_pmu->disable(event);
-	}
-
-	irq_work_run();
-
-	/*
-	 * Re-enable the PMU.
-	 */
-	pmnc = xscale1pmu_read_pmnc() | XSCALE_PMU_ENABLE;
-	xscale1pmu_write_pmnc(pmnc);
-
-	return IRQ_HANDLED;
-}
-
-static void xscale1pmu_enable_event(struct perf_event *event)
-{
-	unsigned long val, mask, evt;
-	struct hw_perf_event *hwc = &event->hw;
-	int idx = hwc->idx;
-
-	switch (idx) {
-	case XSCALE_CYCLE_COUNTER:
-		mask = 0;
-		evt = XSCALE1_CCOUNT_INT_EN;
-		break;
-	case XSCALE_COUNTER0:
-		mask = XSCALE1_COUNT0_EVT_MASK;
-		evt = (hwc->config_base << XSCALE1_COUNT0_EVT_SHFT) |
-			XSCALE1_COUNT0_INT_EN;
-		break;
-	case XSCALE_COUNTER1:
-		mask = XSCALE1_COUNT1_EVT_MASK;
-		evt = (hwc->config_base << XSCALE1_COUNT1_EVT_SHFT) |
-			XSCALE1_COUNT1_INT_EN;
-		break;
-	default:
-		WARN_ONCE(1, "invalid counter number (%d)\n", idx);
-		return;
-	}
-
-	val = xscale1pmu_read_pmnc();
-	val &= ~mask;
-	val |= evt;
-	xscale1pmu_write_pmnc(val);
-}
-
-static void xscale1pmu_disable_event(struct perf_event *event)
-{
-	unsigned long val, mask, evt;
-	struct hw_perf_event *hwc = &event->hw;
-	int idx = hwc->idx;
-
-	switch (idx) {
-	case XSCALE_CYCLE_COUNTER:
-		mask = XSCALE1_CCOUNT_INT_EN;
-		evt = 0;
-		break;
-	case XSCALE_COUNTER0:
-		mask = XSCALE1_COUNT0_INT_EN | XSCALE1_COUNT0_EVT_MASK;
-		evt = XSCALE_PERFCTR_UNUSED << XSCALE1_COUNT0_EVT_SHFT;
-		break;
-	case XSCALE_COUNTER1:
-		mask = XSCALE1_COUNT1_INT_EN | XSCALE1_COUNT1_EVT_MASK;
-		evt = XSCALE_PERFCTR_UNUSED << XSCALE1_COUNT1_EVT_SHFT;
-		break;
-	default:
-		WARN_ONCE(1, "invalid counter number (%d)\n", idx);
-		return;
-	}
-
-	val = xscale1pmu_read_pmnc();
-	val &= ~mask;
-	val |= evt;
-	xscale1pmu_write_pmnc(val);
-}
-
-static int
-xscale1pmu_get_event_idx(struct pmu_hw_events *cpuc,
-				struct perf_event *event)
-{
-	struct hw_perf_event *hwc = &event->hw;
-	if (XSCALE_PERFCTR_CCNT == hwc->config_base) {
-		if (test_and_set_bit(XSCALE_CYCLE_COUNTER, cpuc->used_mask))
-			return -EAGAIN;
-
-		return XSCALE_CYCLE_COUNTER;
-	} else {
-		if (!test_and_set_bit(XSCALE_COUNTER1, cpuc->used_mask))
-			return XSCALE_COUNTER1;
-
-		if (!test_and_set_bit(XSCALE_COUNTER0, cpuc->used_mask))
-			return XSCALE_COUNTER0;
-
-		return -EAGAIN;
-	}
-}
-
-static void xscalepmu_clear_event_idx(struct pmu_hw_events *cpuc,
-				     struct perf_event *event)
-{
-	clear_bit(event->hw.idx, cpuc->used_mask);
-}
-
-static void xscale1pmu_start(struct arm_pmu *cpu_pmu)
-{
-	unsigned long val;
-
-	val = xscale1pmu_read_pmnc();
-	val |= XSCALE_PMU_ENABLE;
-	xscale1pmu_write_pmnc(val);
-}
-
-static void xscale1pmu_stop(struct arm_pmu *cpu_pmu)
-{
-	unsigned long val;
-
-	val = xscale1pmu_read_pmnc();
-	val &= ~XSCALE_PMU_ENABLE;
-	xscale1pmu_write_pmnc(val);
-}
-
-static inline u64 xscale1pmu_read_counter(struct perf_event *event)
-{
-	struct hw_perf_event *hwc = &event->hw;
-	int counter = hwc->idx;
-	u32 val = 0;
-
-	switch (counter) {
-	case XSCALE_CYCLE_COUNTER:
-		asm volatile("mrc p14, 0, %0, c1, c0, 0" : "=r" (val));
-		break;
-	case XSCALE_COUNTER0:
-		asm volatile("mrc p14, 0, %0, c2, c0, 0" : "=r" (val));
-		break;
-	case XSCALE_COUNTER1:
-		asm volatile("mrc p14, 0, %0, c3, c0, 0" : "=r" (val));
-		break;
-	}
-
-	return val;
-}
-
-static inline void xscale1pmu_write_counter(struct perf_event *event, u64 val)
-{
-	struct hw_perf_event *hwc = &event->hw;
-	int counter = hwc->idx;
-
-	switch (counter) {
-	case XSCALE_CYCLE_COUNTER:
-		asm volatile("mcr p14, 0, %0, c1, c0, 0" : : "r" (val));
-		break;
-	case XSCALE_COUNTER0:
-		asm volatile("mcr p14, 0, %0, c2, c0, 0" : : "r" (val));
-		break;
-	case XSCALE_COUNTER1:
-		asm volatile("mcr p14, 0, %0, c3, c0, 0" : : "r" (val));
-		break;
-	}
-}
-
-static int xscale_map_event(struct perf_event *event)
-{
-	return armpmu_map_event(event, &xscale_perf_map,
-				&xscale_perf_cache_map, 0xFF);
-}
-
-static int xscale1pmu_init(struct arm_pmu *cpu_pmu)
-{
-	cpu_pmu->name		= "armv5_xscale1";
-	cpu_pmu->handle_irq	= xscale1pmu_handle_irq;
-	cpu_pmu->enable		= xscale1pmu_enable_event;
-	cpu_pmu->disable	= xscale1pmu_disable_event;
-	cpu_pmu->read_counter	= xscale1pmu_read_counter;
-	cpu_pmu->write_counter	= xscale1pmu_write_counter;
-	cpu_pmu->get_event_idx	= xscale1pmu_get_event_idx;
-	cpu_pmu->clear_event_idx = xscalepmu_clear_event_idx;
-	cpu_pmu->start		= xscale1pmu_start;
-	cpu_pmu->stop		= xscale1pmu_stop;
-	cpu_pmu->map_event	= xscale_map_event;
-	cpu_pmu->num_events	= 3;
-
-	return 0;
-}
-
-#define XSCALE2_OVERFLOWED_MASK	0x01f
-#define XSCALE2_CCOUNT_OVERFLOW	0x001
-#define XSCALE2_COUNT0_OVERFLOW	0x002
-#define XSCALE2_COUNT1_OVERFLOW	0x004
-#define XSCALE2_COUNT2_OVERFLOW	0x008
-#define XSCALE2_COUNT3_OVERFLOW	0x010
-#define XSCALE2_CCOUNT_INT_EN	0x001
-#define XSCALE2_COUNT0_INT_EN	0x002
-#define XSCALE2_COUNT1_INT_EN	0x004
-#define XSCALE2_COUNT2_INT_EN	0x008
-#define XSCALE2_COUNT3_INT_EN	0x010
-#define XSCALE2_COUNT0_EVT_SHFT	0
-#define XSCALE2_COUNT0_EVT_MASK	(0xff << XSCALE2_COUNT0_EVT_SHFT)
-#define XSCALE2_COUNT1_EVT_SHFT	8
-#define XSCALE2_COUNT1_EVT_MASK	(0xff << XSCALE2_COUNT1_EVT_SHFT)
-#define XSCALE2_COUNT2_EVT_SHFT	16
-#define XSCALE2_COUNT2_EVT_MASK	(0xff << XSCALE2_COUNT2_EVT_SHFT)
-#define XSCALE2_COUNT3_EVT_SHFT	24
-#define XSCALE2_COUNT3_EVT_MASK	(0xff << XSCALE2_COUNT3_EVT_SHFT)
-
-static inline u32
-xscale2pmu_read_pmnc(void)
-{
-	u32 val;
-	asm volatile("mrc p14, 0, %0, c0, c1, 0" : "=r" (val));
-	/* bits 1-2 and 4-23 are read-unpredictable */
-	return val & 0xff000009;
-}
-
-static inline void
-xscale2pmu_write_pmnc(u32 val)
-{
-	/* bits 4-23 are write-as-0, 24-31 are write ignored */
-	val &= 0xf;
-	asm volatile("mcr p14, 0, %0, c0, c1, 0" : : "r" (val));
-}
-
-static inline u32
-xscale2pmu_read_overflow_flags(void)
-{
-	u32 val;
-	asm volatile("mrc p14, 0, %0, c5, c1, 0" : "=r" (val));
-	return val;
-}
-
-static inline void
-xscale2pmu_write_overflow_flags(u32 val)
-{
-	asm volatile("mcr p14, 0, %0, c5, c1, 0" : : "r" (val));
-}
-
-static inline u32
-xscale2pmu_read_event_select(void)
-{
-	u32 val;
-	asm volatile("mrc p14, 0, %0, c8, c1, 0" : "=r" (val));
-	return val;
-}
-
-static inline void
-xscale2pmu_write_event_select(u32 val)
-{
-	asm volatile("mcr p14, 0, %0, c8, c1, 0" : : "r"(val));
-}
-
-static inline u32
-xscale2pmu_read_int_enable(void)
-{
-	u32 val;
-	asm volatile("mrc p14, 0, %0, c4, c1, 0" : "=r" (val));
-	return val;
-}
-
-static void
-xscale2pmu_write_int_enable(u32 val)
-{
-	asm volatile("mcr p14, 0, %0, c4, c1, 0" : : "r" (val));
-}
-
-static inline int
-xscale2_pmnc_counter_has_overflowed(unsigned long of_flags,
-					enum xscale_counters counter)
-{
-	int ret = 0;
-
-	switch (counter) {
-	case XSCALE_CYCLE_COUNTER:
-		ret = of_flags & XSCALE2_CCOUNT_OVERFLOW;
-		break;
-	case XSCALE_COUNTER0:
-		ret = of_flags & XSCALE2_COUNT0_OVERFLOW;
-		break;
-	case XSCALE_COUNTER1:
-		ret = of_flags & XSCALE2_COUNT1_OVERFLOW;
-		break;
-	case XSCALE_COUNTER2:
-		ret = of_flags & XSCALE2_COUNT2_OVERFLOW;
-		break;
-	case XSCALE_COUNTER3:
-		ret = of_flags & XSCALE2_COUNT3_OVERFLOW;
-		break;
-	default:
-		WARN_ONCE(1, "invalid counter number (%d)\n", counter);
-	}
-
-	return ret;
-}
-
-static irqreturn_t
-xscale2pmu_handle_irq(struct arm_pmu *cpu_pmu)
-{
-	unsigned long pmnc, of_flags;
-	struct perf_sample_data data;
-	struct pmu_hw_events *cpuc = this_cpu_ptr(cpu_pmu->hw_events);
-	struct pt_regs *regs;
-	int idx;
-
-	/* Disable the PMU. */
-	pmnc = xscale2pmu_read_pmnc();
-	xscale2pmu_write_pmnc(pmnc & ~XSCALE_PMU_ENABLE);
-
-	/* Check the overflow flag register. */
-	of_flags = xscale2pmu_read_overflow_flags();
-	if (!(of_flags & XSCALE2_OVERFLOWED_MASK))
-		return IRQ_NONE;
-
-	/* Clear the overflow bits. */
-	xscale2pmu_write_overflow_flags(of_flags);
-
-	regs = get_irq_regs();
-
-	for (idx = 0; idx < cpu_pmu->num_events; ++idx) {
-		struct perf_event *event = cpuc->events[idx];
-		struct hw_perf_event *hwc;
-
-		if (!event)
-			continue;
-
-		if (!xscale2_pmnc_counter_has_overflowed(of_flags, idx))
-			continue;
-
-		hwc = &event->hw;
-		armpmu_event_update(event);
-		perf_sample_data_init(&data, 0, hwc->last_period);
-		if (!armpmu_event_set_period(event))
-			continue;
-
-		if (perf_event_overflow(event, &data, regs))
-			cpu_pmu->disable(event);
-	}
-
-	irq_work_run();
-
-	/*
-	 * Re-enable the PMU.
-	 */
-	pmnc = xscale2pmu_read_pmnc() | XSCALE_PMU_ENABLE;
-	xscale2pmu_write_pmnc(pmnc);
-
-	return IRQ_HANDLED;
-}
-
-static void xscale2pmu_enable_event(struct perf_event *event)
-{
-	unsigned long ien, evtsel;
-	struct hw_perf_event *hwc = &event->hw;
-	int idx = hwc->idx;
-
-	ien = xscale2pmu_read_int_enable();
-	evtsel = xscale2pmu_read_event_select();
-
-	switch (idx) {
-	case XSCALE_CYCLE_COUNTER:
-		ien |= XSCALE2_CCOUNT_INT_EN;
-		break;
-	case XSCALE_COUNTER0:
-		ien |= XSCALE2_COUNT0_INT_EN;
-		evtsel &= ~XSCALE2_COUNT0_EVT_MASK;
-		evtsel |= hwc->config_base << XSCALE2_COUNT0_EVT_SHFT;
-		break;
-	case XSCALE_COUNTER1:
-		ien |= XSCALE2_COUNT1_INT_EN;
-		evtsel &= ~XSCALE2_COUNT1_EVT_MASK;
-		evtsel |= hwc->config_base << XSCALE2_COUNT1_EVT_SHFT;
-		break;
-	case XSCALE_COUNTER2:
-		ien |= XSCALE2_COUNT2_INT_EN;
-		evtsel &= ~XSCALE2_COUNT2_EVT_MASK;
-		evtsel |= hwc->config_base << XSCALE2_COUNT2_EVT_SHFT;
-		break;
-	case XSCALE_COUNTER3:
-		ien |= XSCALE2_COUNT3_INT_EN;
-		evtsel &= ~XSCALE2_COUNT3_EVT_MASK;
-		evtsel |= hwc->config_base << XSCALE2_COUNT3_EVT_SHFT;
-		break;
-	default:
-		WARN_ONCE(1, "invalid counter number (%d)\n", idx);
-		return;
-	}
-
-	xscale2pmu_write_event_select(evtsel);
-	xscale2pmu_write_int_enable(ien);
-}
-
-static void xscale2pmu_disable_event(struct perf_event *event)
-{
-	unsigned long ien, evtsel, of_flags;
-	struct hw_perf_event *hwc = &event->hw;
-	int idx = hwc->idx;
-
-	ien = xscale2pmu_read_int_enable();
-	evtsel = xscale2pmu_read_event_select();
-
-	switch (idx) {
-	case XSCALE_CYCLE_COUNTER:
-		ien &= ~XSCALE2_CCOUNT_INT_EN;
-		of_flags = XSCALE2_CCOUNT_OVERFLOW;
-		break;
-	case XSCALE_COUNTER0:
-		ien &= ~XSCALE2_COUNT0_INT_EN;
-		evtsel &= ~XSCALE2_COUNT0_EVT_MASK;
-		evtsel |= XSCALE_PERFCTR_UNUSED << XSCALE2_COUNT0_EVT_SHFT;
-		of_flags = XSCALE2_COUNT0_OVERFLOW;
-		break;
-	case XSCALE_COUNTER1:
-		ien &= ~XSCALE2_COUNT1_INT_EN;
-		evtsel &= ~XSCALE2_COUNT1_EVT_MASK;
-		evtsel |= XSCALE_PERFCTR_UNUSED << XSCALE2_COUNT1_EVT_SHFT;
-		of_flags = XSCALE2_COUNT1_OVERFLOW;
-		break;
-	case XSCALE_COUNTER2:
-		ien &= ~XSCALE2_COUNT2_INT_EN;
-		evtsel &= ~XSCALE2_COUNT2_EVT_MASK;
-		evtsel |= XSCALE_PERFCTR_UNUSED << XSCALE2_COUNT2_EVT_SHFT;
-		of_flags = XSCALE2_COUNT2_OVERFLOW;
-		break;
-	case XSCALE_COUNTER3:
-		ien &= ~XSCALE2_COUNT3_INT_EN;
-		evtsel &= ~XSCALE2_COUNT3_EVT_MASK;
-		evtsel |= XSCALE_PERFCTR_UNUSED << XSCALE2_COUNT3_EVT_SHFT;
-		of_flags = XSCALE2_COUNT3_OVERFLOW;
-		break;
-	default:
-		WARN_ONCE(1, "invalid counter number (%d)\n", idx);
-		return;
-	}
-
-	xscale2pmu_write_event_select(evtsel);
-	xscale2pmu_write_int_enable(ien);
-	xscale2pmu_write_overflow_flags(of_flags);
-}
-
-static int
-xscale2pmu_get_event_idx(struct pmu_hw_events *cpuc,
-				struct perf_event *event)
-{
-	int idx = xscale1pmu_get_event_idx(cpuc, event);
-	if (idx >= 0)
-		goto out;
-
-	if (!test_and_set_bit(XSCALE_COUNTER3, cpuc->used_mask))
-		idx = XSCALE_COUNTER3;
-	else if (!test_and_set_bit(XSCALE_COUNTER2, cpuc->used_mask))
-		idx = XSCALE_COUNTER2;
-out:
-	return idx;
-}
-
-static void xscale2pmu_start(struct arm_pmu *cpu_pmu)
-{
-	unsigned long val;
-
-	val = xscale2pmu_read_pmnc() & ~XSCALE_PMU_CNT64;
-	val |= XSCALE_PMU_ENABLE;
-	xscale2pmu_write_pmnc(val);
-}
-
-static void xscale2pmu_stop(struct arm_pmu *cpu_pmu)
-{
-	unsigned long val;
-
-	val = xscale2pmu_read_pmnc();
-	val &= ~XSCALE_PMU_ENABLE;
-	xscale2pmu_write_pmnc(val);
-}
-
-static inline u64 xscale2pmu_read_counter(struct perf_event *event)
-{
-	struct hw_perf_event *hwc = &event->hw;
-	int counter = hwc->idx;
-	u32 val = 0;
-
-	switch (counter) {
-	case XSCALE_CYCLE_COUNTER:
-		asm volatile("mrc p14, 0, %0, c1, c1, 0" : "=r" (val));
-		break;
-	case XSCALE_COUNTER0:
-		asm volatile("mrc p14, 0, %0, c0, c2, 0" : "=r" (val));
-		break;
-	case XSCALE_COUNTER1:
-		asm volatile("mrc p14, 0, %0, c1, c2, 0" : "=r" (val));
-		break;
-	case XSCALE_COUNTER2:
-		asm volatile("mrc p14, 0, %0, c2, c2, 0" : "=r" (val));
-		break;
-	case XSCALE_COUNTER3:
-		asm volatile("mrc p14, 0, %0, c3, c2, 0" : "=r" (val));
-		break;
-	}
-
-	return val;
-}
-
-static inline void xscale2pmu_write_counter(struct perf_event *event, u64 val)
-{
-	struct hw_perf_event *hwc = &event->hw;
-	int counter = hwc->idx;
-
-	switch (counter) {
-	case XSCALE_CYCLE_COUNTER:
-		asm volatile("mcr p14, 0, %0, c1, c1, 0" : : "r" (val));
-		break;
-	case XSCALE_COUNTER0:
-		asm volatile("mcr p14, 0, %0, c0, c2, 0" : : "r" (val));
-		break;
-	case XSCALE_COUNTER1:
-		asm volatile("mcr p14, 0, %0, c1, c2, 0" : : "r" (val));
-		break;
-	case XSCALE_COUNTER2:
-		asm volatile("mcr p14, 0, %0, c2, c2, 0" : : "r" (val));
-		break;
-	case XSCALE_COUNTER3:
-		asm volatile("mcr p14, 0, %0, c3, c2, 0" : : "r" (val));
-		break;
-	}
-}
-
-static int xscale2pmu_init(struct arm_pmu *cpu_pmu)
-{
-	cpu_pmu->name		= "armv5_xscale2";
-	cpu_pmu->handle_irq	= xscale2pmu_handle_irq;
-	cpu_pmu->enable		= xscale2pmu_enable_event;
-	cpu_pmu->disable	= xscale2pmu_disable_event;
-	cpu_pmu->read_counter	= xscale2pmu_read_counter;
-	cpu_pmu->write_counter	= xscale2pmu_write_counter;
-	cpu_pmu->get_event_idx	= xscale2pmu_get_event_idx;
-	cpu_pmu->clear_event_idx = xscalepmu_clear_event_idx;
-	cpu_pmu->start		= xscale2pmu_start;
-	cpu_pmu->stop		= xscale2pmu_stop;
-	cpu_pmu->map_event	= xscale_map_event;
-	cpu_pmu->num_events	= 5;
-
-	return 0;
-}
-
-static const struct pmu_probe_info xscale_pmu_probe_table[] = {
-	XSCALE_PMU_PROBE(ARM_CPU_XSCALE_ARCH_V1, xscale1pmu_init),
-	XSCALE_PMU_PROBE(ARM_CPU_XSCALE_ARCH_V2, xscale2pmu_init),
-	{ /* sentinel value */ }
-};
-
-static int xscale_pmu_device_probe(struct platform_device *pdev)
-{
-	return arm_pmu_device_probe(pdev, NULL, xscale_pmu_probe_table);
-}
-
-static struct platform_driver xscale_pmu_driver = {
-	.driver		= {
-		.name	= "xscale-pmu",
-	},
-	.probe		= xscale_pmu_device_probe,
-};
-
-builtin_platform_driver(xscale_pmu_driver);
-#endif	/* CONFIG_CPU_XSCALE */