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-rw-r--r--arch/mips/oprofile/op_model_mipsxx.c444
1 files changed, 0 insertions, 444 deletions
diff --git a/arch/mips/oprofile/op_model_mipsxx.c b/arch/mips/oprofile/op_model_mipsxx.c
deleted file mode 100644
index e4b1140cdae0..000000000000
--- a/arch/mips/oprofile/op_model_mipsxx.c
+++ /dev/null
@@ -1,444 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2004, 05, 06 by Ralf Baechle
- * Copyright (C) 2005 by MIPS Technologies, Inc.
- */
-#include <linux/cpumask.h>
-#include <linux/oprofile.h>
-#include <linux/interrupt.h>
-#include <linux/smp.h>
-#include <asm/irq_regs.h>
-
-#include "op_impl.h"
-
-#define M_PERFCTL_EXL (1UL << 0)
-#define M_PERFCTL_KERNEL (1UL << 1)
-#define M_PERFCTL_SUPERVISOR (1UL << 2)
-#define M_PERFCTL_USER (1UL << 3)
-#define M_PERFCTL_INTERRUPT_ENABLE (1UL << 4)
-#define M_PERFCTL_EVENT(event) (((event) & 0x3ff) << 5)
-#define M_PERFCTL_VPEID(vpe) ((vpe) << 16)
-#define M_PERFCTL_MT_EN(filter) ((filter) << 20)
-#define M_TC_EN_ALL M_PERFCTL_MT_EN(0)
-#define M_TC_EN_VPE M_PERFCTL_MT_EN(1)
-#define M_TC_EN_TC M_PERFCTL_MT_EN(2)
-#define M_PERFCTL_TCID(tcid) ((tcid) << 22)
-#define M_PERFCTL_WIDE (1UL << 30)
-#define M_PERFCTL_MORE (1UL << 31)
-
-#define M_COUNTER_OVERFLOW (1UL << 31)
-
-/* Netlogic XLR specific, count events in all threads in a core */
-#define M_PERFCTL_COUNT_ALL_THREADS (1UL << 13)
-
-static int (*save_perf_irq)(void);
-
-/*
- * XLR has only one set of counters per core. Designate the
- * first hardware thread in the core for setup and init.
- * Skip CPUs with non-zero hardware thread id (4 hwt per core)
- */
-#if defined(CONFIG_CPU_XLR) && defined(CONFIG_SMP)
-#define oprofile_skip_cpu(c) ((cpu_logical_map(c) & 0x3) != 0)
-#else
-#define oprofile_skip_cpu(c) 0
-#endif
-
-#ifdef CONFIG_MIPS_MT_SMP
-static int cpu_has_mipsmt_pertccounters;
-#define WHAT (M_TC_EN_VPE | \
- M_PERFCTL_VPEID(cpu_data[smp_processor_id()].vpe_id))
-#define vpe_id() (cpu_has_mipsmt_pertccounters ? \
- 0 : cpu_data[smp_processor_id()].vpe_id)
-
-/*
- * The number of bits to shift to convert between counters per core and
- * counters per VPE. There is no reasonable interface atm to obtain the
- * number of VPEs used by Linux and in the 34K this number is fixed to two
- * anyways so we hardcore a few things here for the moment. The way it's
- * done here will ensure that oprofile VSMP kernel will run right on a lesser
- * core like a 24K also or with maxcpus=1.
- */
-static inline unsigned int vpe_shift(void)
-{
- if (num_possible_cpus() > 1)
- return 1;
-
- return 0;
-}
-
-#else
-
-#define WHAT 0
-#define vpe_id() 0
-
-static inline unsigned int vpe_shift(void)
-{
- return 0;
-}
-
-#endif
-
-static inline unsigned int counters_total_to_per_cpu(unsigned int counters)
-{
- return counters >> vpe_shift();
-}
-
-static inline unsigned int counters_per_cpu_to_total(unsigned int counters)
-{
- return counters << vpe_shift();
-}
-
-#define __define_perf_accessors(r, n, np) \
- \
-static inline unsigned int r_c0_ ## r ## n(void) \
-{ \
- unsigned int cpu = vpe_id(); \
- \
- switch (cpu) { \
- case 0: \
- return read_c0_ ## r ## n(); \
- case 1: \
- return read_c0_ ## r ## np(); \
- default: \
- BUG(); \
- } \
- return 0; \
-} \
- \
-static inline void w_c0_ ## r ## n(unsigned int value) \
-{ \
- unsigned int cpu = vpe_id(); \
- \
- switch (cpu) { \
- case 0: \
- write_c0_ ## r ## n(value); \
- return; \
- case 1: \
- write_c0_ ## r ## np(value); \
- return; \
- default: \
- BUG(); \
- } \
- return; \
-} \
-
-__define_perf_accessors(perfcntr, 0, 2)
-__define_perf_accessors(perfcntr, 1, 3)
-__define_perf_accessors(perfcntr, 2, 0)
-__define_perf_accessors(perfcntr, 3, 1)
-
-__define_perf_accessors(perfctrl, 0, 2)
-__define_perf_accessors(perfctrl, 1, 3)
-__define_perf_accessors(perfctrl, 2, 0)
-__define_perf_accessors(perfctrl, 3, 1)
-
-struct op_mips_model op_model_mipsxx_ops;
-
-static struct mipsxx_register_config {
- unsigned int control[4];
- unsigned int counter[4];
-} reg;
-
-/* Compute all of the registers in preparation for enabling profiling. */
-
-static void mipsxx_reg_setup(struct op_counter_config *ctr)
-{
- unsigned int counters = op_model_mipsxx_ops.num_counters;
- int i;
-
- /* Compute the performance counter control word. */
- for (i = 0; i < counters; i++) {
- reg.control[i] = 0;
- reg.counter[i] = 0;
-
- if (!ctr[i].enabled)
- continue;
-
- reg.control[i] = M_PERFCTL_EVENT(ctr[i].event) |
- M_PERFCTL_INTERRUPT_ENABLE;
- if (ctr[i].kernel)
- reg.control[i] |= M_PERFCTL_KERNEL;
- if (ctr[i].user)
- reg.control[i] |= M_PERFCTL_USER;
- if (ctr[i].exl)
- reg.control[i] |= M_PERFCTL_EXL;
- if (current_cpu_type() == CPU_XLR)
- reg.control[i] |= M_PERFCTL_COUNT_ALL_THREADS;
- reg.counter[i] = 0x80000000 - ctr[i].count;
- }
-}
-
-/* Program all of the registers in preparation for enabling profiling. */
-
-static void mipsxx_cpu_setup(void *args)
-{
- unsigned int counters = op_model_mipsxx_ops.num_counters;
-
- if (oprofile_skip_cpu(smp_processor_id()))
- return;
-
- switch (counters) {
- case 4:
- w_c0_perfctrl3(0);
- w_c0_perfcntr3(reg.counter[3]);
- case 3:
- w_c0_perfctrl2(0);
- w_c0_perfcntr2(reg.counter[2]);
- case 2:
- w_c0_perfctrl1(0);
- w_c0_perfcntr1(reg.counter[1]);
- case 1:
- w_c0_perfctrl0(0);
- w_c0_perfcntr0(reg.counter[0]);
- }
-}
-
-/* Start all counters on current CPU */
-static void mipsxx_cpu_start(void *args)
-{
- unsigned int counters = op_model_mipsxx_ops.num_counters;
-
- if (oprofile_skip_cpu(smp_processor_id()))
- return;
-
- switch (counters) {
- case 4:
- w_c0_perfctrl3(WHAT | reg.control[3]);
- case 3:
- w_c0_perfctrl2(WHAT | reg.control[2]);
- case 2:
- w_c0_perfctrl1(WHAT | reg.control[1]);
- case 1:
- w_c0_perfctrl0(WHAT | reg.control[0]);
- }
-}
-
-/* Stop all counters on current CPU */
-static void mipsxx_cpu_stop(void *args)
-{
- unsigned int counters = op_model_mipsxx_ops.num_counters;
-
- if (oprofile_skip_cpu(smp_processor_id()))
- return;
-
- switch (counters) {
- case 4:
- w_c0_perfctrl3(0);
- case 3:
- w_c0_perfctrl2(0);
- case 2:
- w_c0_perfctrl1(0);
- case 1:
- w_c0_perfctrl0(0);
- }
-}
-
-static int mipsxx_perfcount_handler(void)
-{
- unsigned int counters = op_model_mipsxx_ops.num_counters;
- unsigned int control;
- unsigned int counter;
- int handled = IRQ_NONE;
-
- if (cpu_has_mips_r2 && !(read_c0_cause() & (1 << 26)))
- return handled;
-
- switch (counters) {
-#define HANDLE_COUNTER(n) \
- case n + 1: \
- control = r_c0_perfctrl ## n(); \
- counter = r_c0_perfcntr ## n(); \
- if ((control & M_PERFCTL_INTERRUPT_ENABLE) && \
- (counter & M_COUNTER_OVERFLOW)) { \
- oprofile_add_sample(get_irq_regs(), n); \
- w_c0_perfcntr ## n(reg.counter[n]); \
- handled = IRQ_HANDLED; \
- }
- HANDLE_COUNTER(3)
- HANDLE_COUNTER(2)
- HANDLE_COUNTER(1)
- HANDLE_COUNTER(0)
- }
-
- return handled;
-}
-
-#define M_CONFIG1_PC (1 << 4)
-
-static inline int __n_counters(void)
-{
- if (!(read_c0_config1() & M_CONFIG1_PC))
- return 0;
- if (!(read_c0_perfctrl0() & M_PERFCTL_MORE))
- return 1;
- if (!(read_c0_perfctrl1() & M_PERFCTL_MORE))
- return 2;
- if (!(read_c0_perfctrl2() & M_PERFCTL_MORE))
- return 3;
-
- return 4;
-}
-
-static inline int n_counters(void)
-{
- int counters;
-
- switch (current_cpu_type()) {
- case CPU_R10000:
- counters = 2;
- break;
-
- case CPU_R12000:
- case CPU_R14000:
- counters = 4;
- break;
-
- default:
- counters = __n_counters();
- }
-
- return counters;
-}
-
-static void reset_counters(void *arg)
-{
- int counters = (int)(long)arg;
- switch (counters) {
- case 4:
- w_c0_perfctrl3(0);
- w_c0_perfcntr3(0);
- case 3:
- w_c0_perfctrl2(0);
- w_c0_perfcntr2(0);
- case 2:
- w_c0_perfctrl1(0);
- w_c0_perfcntr1(0);
- case 1:
- w_c0_perfctrl0(0);
- w_c0_perfcntr0(0);
- }
-}
-
-static irqreturn_t mipsxx_perfcount_int(int irq, void *dev_id)
-{
- return mipsxx_perfcount_handler();
-}
-
-static int __init mipsxx_init(void)
-{
- int counters;
-
- counters = n_counters();
- if (counters == 0) {
- printk(KERN_ERR "Oprofile: CPU has no performance counters\n");
- return -ENODEV;
- }
-
-#ifdef CONFIG_MIPS_MT_SMP
- cpu_has_mipsmt_pertccounters = read_c0_config7() & (1<<19);
- if (!cpu_has_mipsmt_pertccounters)
- counters = counters_total_to_per_cpu(counters);
-#endif
- on_each_cpu(reset_counters, (void *)(long)counters, 1);
-
- op_model_mipsxx_ops.num_counters = counters;
- switch (current_cpu_type()) {
- case CPU_M14KC:
- op_model_mipsxx_ops.cpu_type = "mips/M14Kc";
- break;
-
- case CPU_M14KEC:
- op_model_mipsxx_ops.cpu_type = "mips/M14KEc";
- break;
-
- case CPU_20KC:
- op_model_mipsxx_ops.cpu_type = "mips/20K";
- break;
-
- case CPU_24K:
- op_model_mipsxx_ops.cpu_type = "mips/24K";
- break;
-
- case CPU_25KF:
- op_model_mipsxx_ops.cpu_type = "mips/25K";
- break;
-
- case CPU_1004K:
- case CPU_34K:
- op_model_mipsxx_ops.cpu_type = "mips/34K";
- break;
-
- case CPU_74K:
- op_model_mipsxx_ops.cpu_type = "mips/74K";
- break;
-
- case CPU_5KC:
- op_model_mipsxx_ops.cpu_type = "mips/5K";
- break;
-
- case CPU_R10000:
- if ((current_cpu_data.processor_id & 0xff) == 0x20)
- op_model_mipsxx_ops.cpu_type = "mips/r10000-v2.x";
- else
- op_model_mipsxx_ops.cpu_type = "mips/r10000";
- break;
-
- case CPU_R12000:
- case CPU_R14000:
- op_model_mipsxx_ops.cpu_type = "mips/r12000";
- break;
-
- case CPU_SB1:
- case CPU_SB1A:
- op_model_mipsxx_ops.cpu_type = "mips/sb1";
- break;
-
- case CPU_LOONGSON1:
- op_model_mipsxx_ops.cpu_type = "mips/loongson1";
- break;
-
- case CPU_XLR:
- op_model_mipsxx_ops.cpu_type = "mips/xlr";
- break;
-
- default:
- printk(KERN_ERR "Profiling unsupported for this CPU\n");
-
- return -ENODEV;
- }
-
- save_perf_irq = perf_irq;
- perf_irq = mipsxx_perfcount_handler;
-
- if ((cp0_perfcount_irq >= 0) && (cp0_compare_irq != cp0_perfcount_irq))
- return request_irq(cp0_perfcount_irq, mipsxx_perfcount_int,
- 0, "Perfcounter", save_perf_irq);
-
- return 0;
-}
-
-static void mipsxx_exit(void)
-{
- int counters = op_model_mipsxx_ops.num_counters;
-
- if ((cp0_perfcount_irq >= 0) && (cp0_compare_irq != cp0_perfcount_irq))
- free_irq(cp0_perfcount_irq, save_perf_irq);
-
- counters = counters_per_cpu_to_total(counters);
- on_each_cpu(reset_counters, (void *)(long)counters, 1);
-
- perf_irq = save_perf_irq;
-}
-
-struct op_mips_model op_model_mipsxx_ops = {
- .reg_setup = mipsxx_reg_setup,
- .cpu_setup = mipsxx_cpu_setup,
- .init = mipsxx_init,
- .exit = mipsxx_exit,
- .cpu_start = mipsxx_cpu_start,
- .cpu_stop = mipsxx_cpu_stop,
-};
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