1 files changed, 0 insertions, 412 deletions
diff --git a/arch/powerpc/platforms/cell/pmu.c b/arch/powerpc/platforms/cell/pmu.c
deleted file mode 100644
index b207a7f99be5..000000000000
--- a/arch/powerpc/platforms/cell/pmu.c
+++ /dev/null
@@ -1,412 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Cell Broadband Engine Performance Monitor
- *
- * (C) Copyright IBM Corporation 2001,2006
- *
- * Author:
- *    David Erb (djerb@us.ibm.com)
- *    Kevin Corry (kevcorry@us.ibm.com)
- */
-
-#include <linux/interrupt.h>
-#include <linux/irqdomain.h>
-#include <linux/types.h>
-#include <linux/export.h>
-#include <asm/io.h>
-#include <asm/irq_regs.h>
-#include <asm/machdep.h>
-#include <asm/pmc.h>
-#include <asm/reg.h>
-#include <asm/spu.h>
-#include <asm/cell-regs.h>
-
-#include "interrupt.h"
-
-/*
- * When writing to write-only mmio addresses, save a shadow copy. All of the
- * registers are 32-bit, but stored in the upper-half of a 64-bit field in
- * pmd_regs.
- */
-
-#define WRITE_WO_MMIO(reg, x)					\
-	do {							\
-		u32 _x = (x);					\
-		struct cbe_pmd_regs __iomem *pmd_regs;		\
-		struct cbe_pmd_shadow_regs *shadow_regs;	\
-		pmd_regs = cbe_get_cpu_pmd_regs(cpu);		\
-		shadow_regs = cbe_get_cpu_pmd_shadow_regs(cpu);	\
-		out_be64(&(pmd_regs->reg), (((u64)_x) << 32));	\
-		shadow_regs->reg = _x;				\
-	} while (0)
-
-#define READ_SHADOW_REG(val, reg)				\
-	do {							\
-		struct cbe_pmd_shadow_regs *shadow_regs;	\
-		shadow_regs = cbe_get_cpu_pmd_shadow_regs(cpu);	\
-		(val) = shadow_regs->reg;			\
-	} while (0)
-
-#define READ_MMIO_UPPER32(val, reg)				\
-	do {							\
-		struct cbe_pmd_regs __iomem *pmd_regs;		\
-		pmd_regs = cbe_get_cpu_pmd_regs(cpu);		\
-		(val) = (u32)(in_be64(&pmd_regs->reg) >> 32);	\
-	} while (0)
-
-/*
- * Physical counter registers.
- * Each physical counter can act as one 32-bit counter or two 16-bit counters.
- */
-
-u32 cbe_read_phys_ctr(u32 cpu, u32 phys_ctr)
-{
-	u32 val_in_latch, val = 0;
-
-	if (phys_ctr < NR_PHYS_CTRS) {
-		READ_SHADOW_REG(val_in_latch, counter_value_in_latch);
-
-		/* Read the latch or the actual counter, whichever is newer. */
-		if (val_in_latch & (1 << phys_ctr)) {
-			READ_SHADOW_REG(val, pm_ctr[phys_ctr]);
-		} else {
-			READ_MMIO_UPPER32(val, pm_ctr[phys_ctr]);
-		}
-	}
-
-	return val;
-}
-EXPORT_SYMBOL_GPL(cbe_read_phys_ctr);
-
-void cbe_write_phys_ctr(u32 cpu, u32 phys_ctr, u32 val)
-{
-	struct cbe_pmd_shadow_regs *shadow_regs;
-	u32 pm_ctrl;
-
-	if (phys_ctr < NR_PHYS_CTRS) {
-		/* Writing to a counter only writes to a hardware latch.
-		 * The new value is not propagated to the actual counter
-		 * until the performance monitor is enabled.
-		 */
-		WRITE_WO_MMIO(pm_ctr[phys_ctr], val);
-
-		pm_ctrl = cbe_read_pm(cpu, pm_control);
-		if (pm_ctrl & CBE_PM_ENABLE_PERF_MON) {
-			/* The counters are already active, so we need to
-			 * rewrite the pm_control register to "re-enable"
-			 * the PMU.
-			 */
-			cbe_write_pm(cpu, pm_control, pm_ctrl);
-		} else {
-			shadow_regs = cbe_get_cpu_pmd_shadow_regs(cpu);
-			shadow_regs->counter_value_in_latch |= (1 << phys_ctr);
-		}
-	}
-}
-EXPORT_SYMBOL_GPL(cbe_write_phys_ctr);
-
-/*
- * "Logical" counter registers.
- * These will read/write 16-bits or 32-bits depending on the
- * current size of the counter. Counters 4 - 7 are always 16-bit.
- */
-
-u32 cbe_read_ctr(u32 cpu, u32 ctr)
-{
-	u32 val;
-	u32 phys_ctr = ctr & (NR_PHYS_CTRS - 1);
-
-	val = cbe_read_phys_ctr(cpu, phys_ctr);
-
-	if (cbe_get_ctr_size(cpu, phys_ctr) == 16)
-		val = (ctr < NR_PHYS_CTRS) ? (val >> 16) : (val & 0xffff);
-
-	return val;
-}
-EXPORT_SYMBOL_GPL(cbe_read_ctr);
-
-void cbe_write_ctr(u32 cpu, u32 ctr, u32 val)
-{
-	u32 phys_ctr;
-	u32 phys_val;
-
-	phys_ctr = ctr & (NR_PHYS_CTRS - 1);
-
-	if (cbe_get_ctr_size(cpu, phys_ctr) == 16) {
-		phys_val = cbe_read_phys_ctr(cpu, phys_ctr);
-
-		if (ctr < NR_PHYS_CTRS)
-			val = (val << 16) | (phys_val & 0xffff);
-		else
-			val = (val & 0xffff) | (phys_val & 0xffff0000);
-	}
-
-	cbe_write_phys_ctr(cpu, phys_ctr, val);
-}
-EXPORT_SYMBOL_GPL(cbe_write_ctr);
-
-/*
- * Counter-control registers.
- * Each "logical" counter has a corresponding control register.
- */
-
-u32 cbe_read_pm07_control(u32 cpu, u32 ctr)
-{
-	u32 pm07_control = 0;
-
-	if (ctr < NR_CTRS)
-		READ_SHADOW_REG(pm07_control, pm07_control[ctr]);
-
-	return pm07_control;
-}
-EXPORT_SYMBOL_GPL(cbe_read_pm07_control);
-
-void cbe_write_pm07_control(u32 cpu, u32 ctr, u32 val)
-{
-	if (ctr < NR_CTRS)
-		WRITE_WO_MMIO(pm07_control[ctr], val);
-}
-EXPORT_SYMBOL_GPL(cbe_write_pm07_control);
-
-/*
- * Other PMU control registers. Most of these are write-only.
- */
-
-u32 cbe_read_pm(u32 cpu, enum pm_reg_name reg)
-{
-	u32 val = 0;
-
-	switch (reg) {
-	case group_control:
-		READ_SHADOW_REG(val, group_control);
-		break;
-
-	case debug_bus_control:
-		READ_SHADOW_REG(val, debug_bus_control);
-		break;
-
-	case trace_address:
-		READ_MMIO_UPPER32(val, trace_address);
-		break;
-
-	case ext_tr_timer:
-		READ_SHADOW_REG(val, ext_tr_timer);
-		break;
-
-	case pm_status:
-		READ_MMIO_UPPER32(val, pm_status);
-		break;
-
-	case pm_control:
-		READ_SHADOW_REG(val, pm_control);
-		break;
-
-	case pm_interval:
-		READ_MMIO_UPPER32(val, pm_interval);
-		break;
-
-	case pm_start_stop:
-		READ_SHADOW_REG(val, pm_start_stop);
-		break;
-	}
-
-	return val;
-}
-EXPORT_SYMBOL_GPL(cbe_read_pm);
-
-void cbe_write_pm(u32 cpu, enum pm_reg_name reg, u32 val)
-{
-	switch (reg) {
-	case group_control:
-		WRITE_WO_MMIO(group_control, val);
-		break;
-
-	case debug_bus_control:
-		WRITE_WO_MMIO(debug_bus_control, val);
-		break;
-
-	case trace_address:
-		WRITE_WO_MMIO(trace_address, val);
-		break;
-
-	case ext_tr_timer:
-		WRITE_WO_MMIO(ext_tr_timer, val);
-		break;
-
-	case pm_status:
-		WRITE_WO_MMIO(pm_status, val);
-		break;
-
-	case pm_control:
-		WRITE_WO_MMIO(pm_control, val);
-		break;
-
-	case pm_interval:
-		WRITE_WO_MMIO(pm_interval, val);
-		break;
-
-	case pm_start_stop:
-		WRITE_WO_MMIO(pm_start_stop, val);
-		break;
-	}
-}
-EXPORT_SYMBOL_GPL(cbe_write_pm);
-
-/*
- * Get/set the size of a physical counter to either 16 or 32 bits.
- */
-
-u32 cbe_get_ctr_size(u32 cpu, u32 phys_ctr)
-{
-	u32 pm_ctrl, size = 0;
-
-	if (phys_ctr < NR_PHYS_CTRS) {
-		pm_ctrl = cbe_read_pm(cpu, pm_control);
-		size = (pm_ctrl & CBE_PM_16BIT_CTR(phys_ctr)) ? 16 : 32;
-	}
-
-	return size;
-}
-EXPORT_SYMBOL_GPL(cbe_get_ctr_size);
-
-void cbe_set_ctr_size(u32 cpu, u32 phys_ctr, u32 ctr_size)
-{
-	u32 pm_ctrl;
-
-	if (phys_ctr < NR_PHYS_CTRS) {
-		pm_ctrl = cbe_read_pm(cpu, pm_control);
-		switch (ctr_size) {
-		case 16:
-			pm_ctrl |= CBE_PM_16BIT_CTR(phys_ctr);
-			break;
-
-		case 32:
-			pm_ctrl &= ~CBE_PM_16BIT_CTR(phys_ctr);
-			break;
-		}
-		cbe_write_pm(cpu, pm_control, pm_ctrl);
-	}
-}
-EXPORT_SYMBOL_GPL(cbe_set_ctr_size);
-
-/*
- * Enable/disable the entire performance monitoring unit.
- * When we enable the PMU, all pending writes to counters get committed.
- */
-
-void cbe_enable_pm(u32 cpu)
-{
-	struct cbe_pmd_shadow_regs *shadow_regs;
-	u32 pm_ctrl;
-
-	shadow_regs = cbe_get_cpu_pmd_shadow_regs(cpu);
-	shadow_regs->counter_value_in_latch = 0;
-
-	pm_ctrl = cbe_read_pm(cpu, pm_control) | CBE_PM_ENABLE_PERF_MON;
-	cbe_write_pm(cpu, pm_control, pm_ctrl);
-}
-EXPORT_SYMBOL_GPL(cbe_enable_pm);
-
-void cbe_disable_pm(u32 cpu)
-{
-	u32 pm_ctrl;
-	pm_ctrl = cbe_read_pm(cpu, pm_control) & ~CBE_PM_ENABLE_PERF_MON;
-	cbe_write_pm(cpu, pm_control, pm_ctrl);
-}
-EXPORT_SYMBOL_GPL(cbe_disable_pm);
-
-/*
- * Reading from the trace_buffer.
- * The trace buffer is two 64-bit registers. Reading from
- * the second half automatically increments the trace_address.
- */
-
-void cbe_read_trace_buffer(u32 cpu, u64 *buf)
-{
-	struct cbe_pmd_regs __iomem *pmd_regs = cbe_get_cpu_pmd_regs(cpu);
-
-	*buf++ = in_be64(&pmd_regs->trace_buffer_0_63);
-	*buf++ = in_be64(&pmd_regs->trace_buffer_64_127);
-}
-EXPORT_SYMBOL_GPL(cbe_read_trace_buffer);
-
-/*
- * Enabling/disabling interrupts for the entire performance monitoring unit.
- */
-
-u32 cbe_get_and_clear_pm_interrupts(u32 cpu)
-{
-	/* Reading pm_status clears the interrupt bits. */
-	return cbe_read_pm(cpu, pm_status);
-}
-EXPORT_SYMBOL_GPL(cbe_get_and_clear_pm_interrupts);
-
-void cbe_enable_pm_interrupts(u32 cpu, u32 thread, u32 mask)
-{
-	/* Set which node and thread will handle the next interrupt. */
-	iic_set_interrupt_routing(cpu, thread, 0);
-
-	/* Enable the interrupt bits in the pm_status register. */
-	if (mask)
-		cbe_write_pm(cpu, pm_status, mask);
-}
-EXPORT_SYMBOL_GPL(cbe_enable_pm_interrupts);
-
-void cbe_disable_pm_interrupts(u32 cpu)
-{
-	cbe_get_and_clear_pm_interrupts(cpu);
-	cbe_write_pm(cpu, pm_status, 0);
-}
-EXPORT_SYMBOL_GPL(cbe_disable_pm_interrupts);
-
-static irqreturn_t cbe_pm_irq(int irq, void *dev_id)
-{
-	perf_irq(get_irq_regs());
-	return IRQ_HANDLED;
-}
-
-static int __init cbe_init_pm_irq(void)
-{
-	unsigned int irq;
-	int rc, node;
-
-	for_each_online_node(node) {
-		irq = irq_create_mapping(NULL, IIC_IRQ_IOEX_PMI |
-					       (node << IIC_IRQ_NODE_SHIFT));
-		if (!irq) {
-			printk("ERROR: Unable to allocate irq for node %d\n",
-			       node);
-			return -EINVAL;
-		}
-
-		rc = request_irq(irq, cbe_pm_irq,
-				 0, "cbe-pmu-0", NULL);
-		if (rc) {
-			printk("ERROR: Request for irq on node %d failed\n",
-			       node);
-			return rc;
-		}
-	}
-
-	return 0;
-}
-machine_arch_initcall(cell, cbe_init_pm_irq);
-
-void cbe_sync_irq(int node)
-{
-	unsigned int irq;
-
-	irq = irq_find_mapping(NULL,
-			       IIC_IRQ_IOEX_PMI
-			       | (node << IIC_IRQ_NODE_SHIFT));
-
-	if (!irq) {
-		printk(KERN_WARNING "ERROR, unable to get existing irq %d " \
-		"for node %d\n", irq, node);
-		return;
-	}
-
-	synchronize_irq(irq);
-}
-EXPORT_SYMBOL_GPL(cbe_sync_irq);
-