[PATCH] powerpc: merge the rest of arch/ppc*/oprofile

- merge common.c
- move model specific files
- remove stub Makefiles
- clean up arch/ppc*/Makefile

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 218 insertions, 0 deletions

diff --git a/arch/powerpc/oprofile/op_model_rs64.c b/arch/powerpc/oprofile/op_model_rs64.c
new file mode 100644
index 000000000000..e010b85996e8
--- /dev/null
+++ b/arch/powerpc/oprofile/op_model_rs64.c
@@ -0,0 +1,218 @@
+/*
+ * Copyright (C) 2004 Anton Blanchard <anton@au.ibm.com>, IBM
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/oprofile.h>
+#include <linux/init.h>
+#include <linux/smp.h>
+#include <asm/ptrace.h>
+#include <asm/system.h>
+#include <asm/processor.h>
+#include <asm/cputable.h>
+#include <asm/oprofile_impl.h>
+
+#define dbg(args...)
+
+static void ctrl_write(unsigned int i, unsigned int val)
+{
+	unsigned int tmp = 0;
+	unsigned long shift = 0, mask = 0;
+
+	dbg("ctrl_write %d %x\n", i, val);
+
+	switch(i) {
+	case 0:
+		tmp = mfspr(SPRN_MMCR0);
+		shift = 6;
+		mask = 0x7F;
+		break;
+	case 1:
+		tmp = mfspr(SPRN_MMCR0);
+		shift = 0;
+		mask = 0x3F;
+		break;
+	case 2:
+		tmp = mfspr(SPRN_MMCR1);
+		shift = 31 - 4;
+		mask = 0x1F;
+		break;
+	case 3:
+		tmp = mfspr(SPRN_MMCR1);
+		shift = 31 - 9;
+		mask = 0x1F;
+		break;
+	case 4:
+		tmp = mfspr(SPRN_MMCR1);
+		shift = 31 - 14;
+		mask = 0x1F;
+		break;
+	case 5:
+		tmp = mfspr(SPRN_MMCR1);
+		shift = 31 - 19;
+		mask = 0x1F;
+		break;
+	case 6:
+		tmp = mfspr(SPRN_MMCR1);
+		shift = 31 - 24;
+		mask = 0x1F;
+		break;
+	case 7:
+		tmp = mfspr(SPRN_MMCR1);
+		shift = 31 - 28;
+		mask = 0xF;
+		break;
+	}
+
+	tmp = tmp & ~(mask << shift);
+	tmp |= val << shift;
+
+	switch(i) {
+		case 0:
+		case 1:
+			mtspr(SPRN_MMCR0, tmp);
+			break;
+		default:
+			mtspr(SPRN_MMCR1, tmp);
+	}
+
+	dbg("ctrl_write mmcr0 %lx mmcr1 %lx\n", mfspr(SPRN_MMCR0),
+	       mfspr(SPRN_MMCR1));
+}
+
+static unsigned long reset_value[OP_MAX_COUNTER];
+
+static int num_counters;
+
+static void rs64_reg_setup(struct op_counter_config *ctr,
+			   struct op_system_config *sys,
+			   int num_ctrs)
+{
+	int i;
+
+	num_counters = num_ctrs;
+
+	for (i = 0; i < num_counters; ++i)
+		reset_value[i] = 0x80000000UL - ctr[i].count;
+
+	/* XXX setup user and kernel profiling */
+}
+
+static void rs64_cpu_setup(void *unused)
+{
+	unsigned int mmcr0;
+
+	/* reset MMCR0 and set the freeze bit */
+	mmcr0 = MMCR0_FC;
+	mtspr(SPRN_MMCR0, mmcr0);
+
+	/* reset MMCR1, MMCRA */
+	mtspr(SPRN_MMCR1, 0);
+
+	if (cpu_has_feature(CPU_FTR_MMCRA))
+		mtspr(SPRN_MMCRA, 0);
+
+	mmcr0 |= MMCR0_FCM1|MMCR0_PMXE|MMCR0_FCECE;
+	/* Only applies to POWER3, but should be safe on RS64 */
+	mmcr0 |= MMCR0_PMC1CE|MMCR0_PMCjCE;
+	mtspr(SPRN_MMCR0, mmcr0);
+
+	dbg("setup on cpu %d, mmcr0 %lx\n", smp_processor_id(),
+	    mfspr(SPRN_MMCR0));
+	dbg("setup on cpu %d, mmcr1 %lx\n", smp_processor_id(),
+	    mfspr(SPRN_MMCR1));
+}
+
+static void rs64_start(struct op_counter_config *ctr)
+{
+	int i;
+	unsigned int mmcr0;
+
+	/* set the PMM bit (see comment below) */
+	mtmsrd(mfmsr() | MSR_PMM);
+
+	for (i = 0; i < num_counters; ++i) {
+		if (ctr[i].enabled) {
+			ctr_write(i, reset_value[i]);
+			ctrl_write(i, ctr[i].event);
+		} else {
+			ctr_write(i, 0);
+		}
+	}
+
+	mmcr0 = mfspr(SPRN_MMCR0);
+
+	/*
+	 * now clear the freeze bit, counting will not start until we
+	 * rfid from this excetion, because only at that point will
+	 * the PMM bit be cleared
+	 */
+	mmcr0 &= ~MMCR0_FC;
+	mtspr(SPRN_MMCR0, mmcr0);
+
+	dbg("start on cpu %d, mmcr0 %x\n", smp_processor_id(), mmcr0);
+}
+
+static void rs64_stop(void)
+{
+	unsigned int mmcr0;
+
+	/* freeze counters */
+	mmcr0 = mfspr(SPRN_MMCR0);
+	mmcr0 |= MMCR0_FC;
+	mtspr(SPRN_MMCR0, mmcr0);
+
+	dbg("stop on cpu %d, mmcr0 %x\n", smp_processor_id(), mmcr0);
+
+	mb();
+}
+
+static void rs64_handle_interrupt(struct pt_regs *regs,
+				  struct op_counter_config *ctr)
+{
+	unsigned int mmcr0;
+	int val;
+	int i;
+	unsigned long pc = mfspr(SPRN_SIAR);
+	int is_kernel = (pc >= KERNELBASE);
+
+	/* set the PMM bit (see comment below) */
+	mtmsrd(mfmsr() | MSR_PMM);
+
+	for (i = 0; i < num_counters; ++i) {
+		val = ctr_read(i);
+		if (val < 0) {
+			if (ctr[i].enabled) {
+				oprofile_add_pc(pc, is_kernel, i);
+				ctr_write(i, reset_value[i]);
+			} else {
+				ctr_write(i, 0);
+			}
+		}
+	}
+
+	mmcr0 = mfspr(SPRN_MMCR0);
+
+	/* reset the perfmon trigger */
+	mmcr0 |= MMCR0_PMXE;
+
+	/*
+	 * now clear the freeze bit, counting will not start until we
+	 * rfid from this exception, because only at that point will
+	 * the PMM bit be cleared
+	 */
+	mmcr0 &= ~MMCR0_FC;
+	mtspr(SPRN_MMCR0, mmcr0);
+}
+
+struct op_powerpc_model op_model_rs64 = {
+	.reg_setup		= rs64_reg_setup,
+	.cpu_setup		= rs64_cpu_setup,
+	.start			= rs64_start,
+	.stop			= rs64_stop,
+	.handle_interrupt	= rs64_handle_interrupt,
+};