The routines ps3_virq_setup() and ps3_virq_destroy() are used in only one file, so make them static. Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
		
			
				
	
	
		
			775 lines
		
	
	
	
		
			19 KiB
			
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			775 lines
		
	
	
	
		
			19 KiB
			
		
	
	
	
		
			C
		
	
	
	
	
	
/*
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 *  PS3 interrupt routines.
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 *
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 *  Copyright (C) 2006 Sony Computer Entertainment Inc.
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 *  Copyright 2006 Sony Corp.
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 *
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 *  This program is free software; you can redistribute it and/or modify
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 *  it under the terms of the GNU General Public License as published by
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 *  the Free Software Foundation; version 2 of the License.
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 *
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 *  This program is distributed in the hope that it will be useful,
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 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
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 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 *  GNU General Public License for more details.
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 *
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 *  You should have received a copy of the GNU General Public License
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 *  along with this program; if not, write to the Free Software
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 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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 */
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/irq.h>
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#include <asm/machdep.h>
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#include <asm/udbg.h>
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#include <asm/lv1call.h>
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#include <asm/smp.h>
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#include "platform.h"
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#if defined(DEBUG)
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#define DBG udbg_printf
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#else
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#define DBG pr_debug
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#endif
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/**
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 * struct ps3_bmp - a per cpu irq status and mask bitmap structure
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 * @status: 256 bit status bitmap indexed by plug
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 * @unused_1:
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 * @mask: 256 bit mask bitmap indexed by plug
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 * @unused_2:
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 * @lock:
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 * @ipi_debug_brk_mask:
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 *
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 * The HV mantains per SMT thread mappings of HV outlet to HV plug on
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 * behalf of the guest.  These mappings are implemented as 256 bit guest
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 * supplied bitmaps indexed by plug number.  The addresses of the bitmaps
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 * are registered with the HV through lv1_configure_irq_state_bitmap().
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 * The HV requires that the 512 bits of status + mask not cross a page
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 * boundary.  PS3_BMP_MINALIGN is used to define this minimal 64 byte
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 * alignment.
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 *
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 * The HV supports 256 plugs per thread, assigned as {0..255}, for a total
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 * of 512 plugs supported on a processor.  To simplify the logic this
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 * implementation equates HV plug value to Linux virq value, constrains each
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 * interrupt to have a system wide unique plug number, and limits the range
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 * of the plug values to map into the first dword of the bitmaps.  This
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 * gives a usable range of plug values of  {NUM_ISA_INTERRUPTS..63}.  Note
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 * that there is no constraint on how many in this set an individual thread
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 * can acquire.
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 */
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#define PS3_BMP_MINALIGN 64
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struct ps3_bmp {
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	struct {
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		u64 status;
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		u64 unused_1[3];
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		u64 mask;
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		u64 unused_2[3];
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	};
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	u64 ipi_debug_brk_mask;
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	spinlock_t lock;
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};
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/**
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 * struct ps3_private - a per cpu data structure
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 * @bmp: ps3_bmp structure
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 * @ppe_id: HV logical_ppe_id
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 * @thread_id: HV thread_id
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 */
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struct ps3_private {
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	struct ps3_bmp bmp __attribute__ ((aligned (PS3_BMP_MINALIGN)));
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	u64 ppe_id;
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	u64 thread_id;
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};
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static DEFINE_PER_CPU(struct ps3_private, ps3_private);
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/**
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 * ps3_chip_mask - Set an interrupt mask bit in ps3_bmp.
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 * @virq: The assigned Linux virq.
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 *
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 * Sets ps3_bmp.mask and calls lv1_did_update_interrupt_mask().
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 */
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static void ps3_chip_mask(unsigned int virq)
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{
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	struct ps3_private *pd = get_irq_chip_data(virq);
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	unsigned long flags;
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	pr_debug("%s:%d: thread_id %lu, virq %d\n", __func__, __LINE__,
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		pd->thread_id, virq);
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	local_irq_save(flags);
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	clear_bit(63 - virq, &pd->bmp.mask);
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	lv1_did_update_interrupt_mask(pd->ppe_id, pd->thread_id);
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	local_irq_restore(flags);
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}
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/**
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 * ps3_chip_unmask - Clear an interrupt mask bit in ps3_bmp.
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 * @virq: The assigned Linux virq.
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 *
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 * Clears ps3_bmp.mask and calls lv1_did_update_interrupt_mask().
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 */
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static void ps3_chip_unmask(unsigned int virq)
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{
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	struct ps3_private *pd = get_irq_chip_data(virq);
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	unsigned long flags;
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	pr_debug("%s:%d: thread_id %lu, virq %d\n", __func__, __LINE__,
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		pd->thread_id, virq);
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	local_irq_save(flags);
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	set_bit(63 - virq, &pd->bmp.mask);
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	lv1_did_update_interrupt_mask(pd->ppe_id, pd->thread_id);
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	local_irq_restore(flags);
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}
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/**
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 * ps3_chip_eoi - HV end-of-interrupt.
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 * @virq: The assigned Linux virq.
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 *
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 * Calls lv1_end_of_interrupt_ext().
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 */
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static void ps3_chip_eoi(unsigned int virq)
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{
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	const struct ps3_private *pd = get_irq_chip_data(virq);
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	lv1_end_of_interrupt_ext(pd->ppe_id, pd->thread_id, virq);
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}
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/**
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 * ps3_irq_chip - Represents the ps3_bmp as a Linux struct irq_chip.
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 */
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static struct irq_chip ps3_irq_chip = {
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	.typename = "ps3",
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	.mask = ps3_chip_mask,
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	.unmask = ps3_chip_unmask,
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	.eoi = ps3_chip_eoi,
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};
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/**
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 * ps3_virq_setup - virq related setup.
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 * @cpu: enum ps3_cpu_binding indicating the cpu the interrupt should be
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 * serviced on.
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 * @outlet: The HV outlet from the various create outlet routines.
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 * @virq: The assigned Linux virq.
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 *
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 * Calls irq_create_mapping() to get a virq and sets the chip data to
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 * ps3_private data.
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 */
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static int ps3_virq_setup(enum ps3_cpu_binding cpu, unsigned long outlet,
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			  unsigned int *virq)
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{
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	int result;
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	struct ps3_private *pd;
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	/* This defines the default interrupt distribution policy. */
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	if (cpu == PS3_BINDING_CPU_ANY)
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		cpu = 0;
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	pd = &per_cpu(ps3_private, cpu);
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	*virq = irq_create_mapping(NULL, outlet);
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	if (*virq == NO_IRQ) {
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		pr_debug("%s:%d: irq_create_mapping failed: outlet %lu\n",
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			__func__, __LINE__, outlet);
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		result = -ENOMEM;
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		goto fail_create;
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	}
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	pr_debug("%s:%d: outlet %lu => cpu %u, virq %u\n", __func__, __LINE__,
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		outlet, cpu, *virq);
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	result = set_irq_chip_data(*virq, pd);
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	if (result) {
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		pr_debug("%s:%d: set_irq_chip_data failed\n",
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			__func__, __LINE__);
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		goto fail_set;
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	}
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	ps3_chip_mask(*virq);
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	return result;
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fail_set:
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	irq_dispose_mapping(*virq);
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fail_create:
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	return result;
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}
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/**
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 * ps3_virq_destroy - virq related teardown.
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 * @virq: The assigned Linux virq.
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 *
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 * Clears chip data and calls irq_dispose_mapping() for the virq.
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 */
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static int ps3_virq_destroy(unsigned int virq)
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{
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	const struct ps3_private *pd = get_irq_chip_data(virq);
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	pr_debug("%s:%d: ppe_id %lu, thread_id %lu, virq %u\n", __func__,
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		__LINE__, pd->ppe_id, pd->thread_id, virq);
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	set_irq_chip_data(virq, NULL);
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	irq_dispose_mapping(virq);
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	pr_debug("%s:%d <-\n", __func__, __LINE__);
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	return 0;
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}
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/**
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 * ps3_irq_plug_setup - Generic outlet and virq related setup.
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 * @cpu: enum ps3_cpu_binding indicating the cpu the interrupt should be
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 * serviced on.
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 * @outlet: The HV outlet from the various create outlet routines.
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 * @virq: The assigned Linux virq.
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 *
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 * Sets up virq and connects the irq plug.
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 */
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int ps3_irq_plug_setup(enum ps3_cpu_binding cpu, unsigned long outlet,
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	unsigned int *virq)
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{
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	int result;
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	struct ps3_private *pd;
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	result = ps3_virq_setup(cpu, outlet, virq);
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	if (result) {
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		pr_debug("%s:%d: ps3_virq_setup failed\n", __func__, __LINE__);
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		goto fail_setup;
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	}
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	pd = get_irq_chip_data(*virq);
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	/* Binds outlet to cpu + virq. */
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	result = lv1_connect_irq_plug_ext(pd->ppe_id, pd->thread_id, *virq,
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		outlet, 0);
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	if (result) {
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		pr_info("%s:%d: lv1_connect_irq_plug_ext failed: %s\n",
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		__func__, __LINE__, ps3_result(result));
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		result = -EPERM;
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		goto fail_connect;
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	}
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	return result;
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fail_connect:
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	ps3_virq_destroy(*virq);
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fail_setup:
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	return result;
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}
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EXPORT_SYMBOL_GPL(ps3_irq_plug_setup);
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/**
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 * ps3_irq_plug_destroy - Generic outlet and virq related teardown.
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 * @virq: The assigned Linux virq.
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 *
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 * Disconnects the irq plug and tears down virq.
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 * Do not call for system bus event interrupts setup with
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 * ps3_sb_event_receive_port_setup().
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 */
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int ps3_irq_plug_destroy(unsigned int virq)
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{
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	int result;
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	const struct ps3_private *pd = get_irq_chip_data(virq);
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	pr_debug("%s:%d: ppe_id %lu, thread_id %lu, virq %u\n", __func__,
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		__LINE__, pd->ppe_id, pd->thread_id, virq);
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	ps3_chip_mask(virq);
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	result = lv1_disconnect_irq_plug_ext(pd->ppe_id, pd->thread_id, virq);
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	if (result)
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		pr_info("%s:%d: lv1_disconnect_irq_plug_ext failed: %s\n",
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		__func__, __LINE__, ps3_result(result));
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	ps3_virq_destroy(virq);
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	return result;
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}
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EXPORT_SYMBOL_GPL(ps3_irq_plug_destroy);
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/**
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 * ps3_event_receive_port_setup - Setup an event receive port.
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 * @cpu: enum ps3_cpu_binding indicating the cpu the interrupt should be
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 * serviced on.
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 * @virq: The assigned Linux virq.
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 *
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 * The virq can be used with lv1_connect_interrupt_event_receive_port() to
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 * arrange to receive interrupts from system-bus devices, or with
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 * ps3_send_event_locally() to signal events.
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 */
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int ps3_event_receive_port_setup(enum ps3_cpu_binding cpu, unsigned int *virq)
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{
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	int result;
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	unsigned long outlet;
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	result = lv1_construct_event_receive_port(&outlet);
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	if (result) {
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		pr_debug("%s:%d: lv1_construct_event_receive_port failed: %s\n",
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			__func__, __LINE__, ps3_result(result));
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		*virq = NO_IRQ;
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		return result;
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	}
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	result = ps3_irq_plug_setup(cpu, outlet, virq);
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	BUG_ON(result);
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	return result;
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}
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EXPORT_SYMBOL_GPL(ps3_event_receive_port_setup);
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/**
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 * ps3_event_receive_port_destroy - Destroy an event receive port.
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 * @virq: The assigned Linux virq.
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 *
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 * Since ps3_event_receive_port_destroy destroys the receive port outlet,
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 * SB devices need to call disconnect_interrupt_event_receive_port() before
 | 
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 * this.
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 */
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int ps3_event_receive_port_destroy(unsigned int virq)
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{
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	int result;
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	pr_debug(" -> %s:%d virq %u\n", __func__, __LINE__, virq);
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	ps3_chip_mask(virq);
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	result = lv1_destruct_event_receive_port(virq_to_hw(virq));
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	if (result)
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		pr_debug("%s:%d: lv1_destruct_event_receive_port failed: %s\n",
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			__func__, __LINE__, ps3_result(result));
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	/*
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	 * Don't call ps3_virq_destroy() here since ps3_smp_cleanup_cpu()
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	 * calls from interrupt context (smp_call_function) when kexecing.
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	 */
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	pr_debug(" <- %s:%d\n", __func__, __LINE__);
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	return result;
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}
 | 
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 | 
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int ps3_send_event_locally(unsigned int virq)
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{
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	return lv1_send_event_locally(virq_to_hw(virq));
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}
 | 
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 | 
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/**
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						|
 * ps3_sb_event_receive_port_setup - Setup a system bus event receive port.
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 * @cpu: enum ps3_cpu_binding indicating the cpu the interrupt should be
 | 
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 * serviced on.
 | 
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 * @dev: The system bus device instance.
 | 
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 * @virq: The assigned Linux virq.
 | 
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 *
 | 
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 * An event irq represents a virtual device interrupt.  The interrupt_id
 | 
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 * coresponds to the software interrupt number.
 | 
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 */
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 | 
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int ps3_sb_event_receive_port_setup(struct ps3_system_bus_device *dev,
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	enum ps3_cpu_binding cpu, unsigned int *virq)
 | 
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{
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	/* this should go in system-bus.c */
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 | 
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	int result;
 | 
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 | 
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	result = ps3_event_receive_port_setup(cpu, virq);
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						|
 | 
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	if (result)
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		return result;
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	result = lv1_connect_interrupt_event_receive_port(dev->bus_id,
 | 
						|
		dev->dev_id, virq_to_hw(*virq), dev->interrupt_id);
 | 
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 | 
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	if (result) {
 | 
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		pr_debug("%s:%d: lv1_connect_interrupt_event_receive_port"
 | 
						|
			" failed: %s\n", __func__, __LINE__,
 | 
						|
			ps3_result(result));
 | 
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		ps3_event_receive_port_destroy(*virq);
 | 
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		*virq = NO_IRQ;
 | 
						|
		return result;
 | 
						|
	}
 | 
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 | 
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	pr_debug("%s:%d: interrupt_id %u, virq %u\n", __func__, __LINE__,
 | 
						|
		dev->interrupt_id, *virq);
 | 
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 | 
						|
	return 0;
 | 
						|
}
 | 
						|
EXPORT_SYMBOL(ps3_sb_event_receive_port_setup);
 | 
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 | 
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int ps3_sb_event_receive_port_destroy(struct ps3_system_bus_device *dev,
 | 
						|
	unsigned int virq)
 | 
						|
{
 | 
						|
	/* this should go in system-bus.c */
 | 
						|
 | 
						|
	int result;
 | 
						|
 | 
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	pr_debug(" -> %s:%d: interrupt_id %u, virq %u\n", __func__, __LINE__,
 | 
						|
		dev->interrupt_id, virq);
 | 
						|
 | 
						|
	result = lv1_disconnect_interrupt_event_receive_port(dev->bus_id,
 | 
						|
		dev->dev_id, virq_to_hw(virq), dev->interrupt_id);
 | 
						|
 | 
						|
	if (result)
 | 
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		pr_debug("%s:%d: lv1_disconnect_interrupt_event_receive_port"
 | 
						|
			" failed: %s\n", __func__, __LINE__,
 | 
						|
			ps3_result(result));
 | 
						|
 | 
						|
	result = ps3_event_receive_port_destroy(virq);
 | 
						|
	BUG_ON(result);
 | 
						|
 | 
						|
	/*
 | 
						|
	 * ps3_event_receive_port_destroy() destroys the IRQ plug,
 | 
						|
	 * so don't call ps3_irq_plug_destroy() here.
 | 
						|
	 */
 | 
						|
 | 
						|
	result = ps3_virq_destroy(virq);
 | 
						|
	BUG_ON(result);
 | 
						|
 | 
						|
	pr_debug(" <- %s:%d\n", __func__, __LINE__);
 | 
						|
	return result;
 | 
						|
}
 | 
						|
EXPORT_SYMBOL(ps3_sb_event_receive_port_destroy);
 | 
						|
 | 
						|
/**
 | 
						|
 * ps3_io_irq_setup - Setup a system bus io irq.
 | 
						|
 * @cpu: enum ps3_cpu_binding indicating the cpu the interrupt should be
 | 
						|
 * serviced on.
 | 
						|
 * @interrupt_id: The device interrupt id read from the system repository.
 | 
						|
 * @virq: The assigned Linux virq.
 | 
						|
 *
 | 
						|
 * An io irq represents a non-virtualized device interrupt.  interrupt_id
 | 
						|
 * coresponds to the interrupt number of the interrupt controller.
 | 
						|
 */
 | 
						|
 | 
						|
int ps3_io_irq_setup(enum ps3_cpu_binding cpu, unsigned int interrupt_id,
 | 
						|
	unsigned int *virq)
 | 
						|
{
 | 
						|
	int result;
 | 
						|
	unsigned long outlet;
 | 
						|
 | 
						|
	result = lv1_construct_io_irq_outlet(interrupt_id, &outlet);
 | 
						|
 | 
						|
	if (result) {
 | 
						|
		pr_debug("%s:%d: lv1_construct_io_irq_outlet failed: %s\n",
 | 
						|
			__func__, __LINE__, ps3_result(result));
 | 
						|
		return result;
 | 
						|
	}
 | 
						|
 | 
						|
	result = ps3_irq_plug_setup(cpu, outlet, virq);
 | 
						|
	BUG_ON(result);
 | 
						|
 | 
						|
	return result;
 | 
						|
}
 | 
						|
EXPORT_SYMBOL_GPL(ps3_io_irq_setup);
 | 
						|
 | 
						|
int ps3_io_irq_destroy(unsigned int virq)
 | 
						|
{
 | 
						|
	int result;
 | 
						|
	unsigned long outlet = virq_to_hw(virq);
 | 
						|
 | 
						|
	ps3_chip_mask(virq);
 | 
						|
 | 
						|
	/*
 | 
						|
	 * lv1_destruct_io_irq_outlet() will destroy the IRQ plug,
 | 
						|
	 * so call ps3_irq_plug_destroy() first.
 | 
						|
	 */
 | 
						|
 | 
						|
	result = ps3_irq_plug_destroy(virq);
 | 
						|
	BUG_ON(result);
 | 
						|
 | 
						|
	result = lv1_destruct_io_irq_outlet(outlet);
 | 
						|
 | 
						|
	if (result)
 | 
						|
		pr_debug("%s:%d: lv1_destruct_io_irq_outlet failed: %s\n",
 | 
						|
			__func__, __LINE__, ps3_result(result));
 | 
						|
 | 
						|
	return result;
 | 
						|
}
 | 
						|
EXPORT_SYMBOL_GPL(ps3_io_irq_destroy);
 | 
						|
 | 
						|
/**
 | 
						|
 * ps3_vuart_irq_setup - Setup the system virtual uart virq.
 | 
						|
 * @cpu: enum ps3_cpu_binding indicating the cpu the interrupt should be
 | 
						|
 * serviced on.
 | 
						|
 * @virt_addr_bmp: The caller supplied virtual uart interrupt bitmap.
 | 
						|
 * @virq: The assigned Linux virq.
 | 
						|
 *
 | 
						|
 * The system supports only a single virtual uart, so multiple calls without
 | 
						|
 * freeing the interrupt will return a wrong state error.
 | 
						|
 */
 | 
						|
 | 
						|
int ps3_vuart_irq_setup(enum ps3_cpu_binding cpu, void* virt_addr_bmp,
 | 
						|
	unsigned int *virq)
 | 
						|
{
 | 
						|
	int result;
 | 
						|
	unsigned long outlet;
 | 
						|
	u64 lpar_addr;
 | 
						|
 | 
						|
	BUG_ON(!is_kernel_addr((u64)virt_addr_bmp));
 | 
						|
 | 
						|
	lpar_addr = ps3_mm_phys_to_lpar(__pa(virt_addr_bmp));
 | 
						|
 | 
						|
	result = lv1_configure_virtual_uart_irq(lpar_addr, &outlet);
 | 
						|
 | 
						|
	if (result) {
 | 
						|
		pr_debug("%s:%d: lv1_configure_virtual_uart_irq failed: %s\n",
 | 
						|
			__func__, __LINE__, ps3_result(result));
 | 
						|
		return result;
 | 
						|
	}
 | 
						|
 | 
						|
	result = ps3_irq_plug_setup(cpu, outlet, virq);
 | 
						|
	BUG_ON(result);
 | 
						|
 | 
						|
	return result;
 | 
						|
}
 | 
						|
EXPORT_SYMBOL_GPL(ps3_vuart_irq_setup);
 | 
						|
 | 
						|
int ps3_vuart_irq_destroy(unsigned int virq)
 | 
						|
{
 | 
						|
	int result;
 | 
						|
 | 
						|
	ps3_chip_mask(virq);
 | 
						|
	result = lv1_deconfigure_virtual_uart_irq();
 | 
						|
 | 
						|
	if (result) {
 | 
						|
		pr_debug("%s:%d: lv1_configure_virtual_uart_irq failed: %s\n",
 | 
						|
			__func__, __LINE__, ps3_result(result));
 | 
						|
		return result;
 | 
						|
	}
 | 
						|
 | 
						|
	result = ps3_irq_plug_destroy(virq);
 | 
						|
	BUG_ON(result);
 | 
						|
 | 
						|
	return result;
 | 
						|
}
 | 
						|
EXPORT_SYMBOL_GPL(ps3_vuart_irq_destroy);
 | 
						|
 | 
						|
/**
 | 
						|
 * ps3_spe_irq_setup - Setup an spe virq.
 | 
						|
 * @cpu: enum ps3_cpu_binding indicating the cpu the interrupt should be
 | 
						|
 * serviced on.
 | 
						|
 * @spe_id: The spe_id returned from lv1_construct_logical_spe().
 | 
						|
 * @class: The spe interrupt class {0,1,2}.
 | 
						|
 * @virq: The assigned Linux virq.
 | 
						|
 *
 | 
						|
 */
 | 
						|
 | 
						|
int ps3_spe_irq_setup(enum ps3_cpu_binding cpu, unsigned long spe_id,
 | 
						|
	unsigned int class, unsigned int *virq)
 | 
						|
{
 | 
						|
	int result;
 | 
						|
	unsigned long outlet;
 | 
						|
 | 
						|
	BUG_ON(class > 2);
 | 
						|
 | 
						|
	result = lv1_get_spe_irq_outlet(spe_id, class, &outlet);
 | 
						|
 | 
						|
	if (result) {
 | 
						|
		pr_debug("%s:%d: lv1_get_spe_irq_outlet failed: %s\n",
 | 
						|
			__func__, __LINE__, ps3_result(result));
 | 
						|
		return result;
 | 
						|
	}
 | 
						|
 | 
						|
	result = ps3_irq_plug_setup(cpu, outlet, virq);
 | 
						|
	BUG_ON(result);
 | 
						|
 | 
						|
	return result;
 | 
						|
}
 | 
						|
 | 
						|
int ps3_spe_irq_destroy(unsigned int virq)
 | 
						|
{
 | 
						|
	int result;
 | 
						|
 | 
						|
	ps3_chip_mask(virq);
 | 
						|
 | 
						|
	result = ps3_irq_plug_destroy(virq);
 | 
						|
	BUG_ON(result);
 | 
						|
 | 
						|
	return result;
 | 
						|
}
 | 
						|
 | 
						|
 | 
						|
#define PS3_INVALID_OUTLET ((irq_hw_number_t)-1)
 | 
						|
#define PS3_PLUG_MAX 63
 | 
						|
 | 
						|
#if defined(DEBUG)
 | 
						|
static void _dump_64_bmp(const char *header, const u64 *p, unsigned cpu,
 | 
						|
	const char* func, int line)
 | 
						|
{
 | 
						|
	pr_debug("%s:%d: %s %u {%04lx_%04lx_%04lx_%04lx}\n",
 | 
						|
		func, line, header, cpu,
 | 
						|
		*p >> 48, (*p >> 32) & 0xffff, (*p >> 16) & 0xffff,
 | 
						|
		*p & 0xffff);
 | 
						|
}
 | 
						|
 | 
						|
static void __maybe_unused _dump_256_bmp(const char *header,
 | 
						|
	const u64 *p, unsigned cpu, const char* func, int line)
 | 
						|
{
 | 
						|
	pr_debug("%s:%d: %s %u {%016lx:%016lx:%016lx:%016lx}\n",
 | 
						|
		func, line, header, cpu, p[0], p[1], p[2], p[3]);
 | 
						|
}
 | 
						|
 | 
						|
#define dump_bmp(_x) _dump_bmp(_x, __func__, __LINE__)
 | 
						|
static void _dump_bmp(struct ps3_private* pd, const char* func, int line)
 | 
						|
{
 | 
						|
	unsigned long flags;
 | 
						|
 | 
						|
	spin_lock_irqsave(&pd->bmp.lock, flags);
 | 
						|
	_dump_64_bmp("stat", &pd->bmp.status, pd->thread_id, func, line);
 | 
						|
	_dump_64_bmp("mask", &pd->bmp.mask, pd->thread_id, func, line);
 | 
						|
	spin_unlock_irqrestore(&pd->bmp.lock, flags);
 | 
						|
}
 | 
						|
 | 
						|
#define dump_mask(_x) _dump_mask(_x, __func__, __LINE__)
 | 
						|
static void __maybe_unused _dump_mask(struct ps3_private *pd,
 | 
						|
	const char* func, int line)
 | 
						|
{
 | 
						|
	unsigned long flags;
 | 
						|
 | 
						|
	spin_lock_irqsave(&pd->bmp.lock, flags);
 | 
						|
	_dump_64_bmp("mask", &pd->bmp.mask, pd->thread_id, func, line);
 | 
						|
	spin_unlock_irqrestore(&pd->bmp.lock, flags);
 | 
						|
}
 | 
						|
#else
 | 
						|
static void dump_bmp(struct ps3_private* pd) {};
 | 
						|
#endif /* defined(DEBUG) */
 | 
						|
 | 
						|
static void ps3_host_unmap(struct irq_host *h, unsigned int virq)
 | 
						|
{
 | 
						|
	set_irq_chip_data(virq, NULL);
 | 
						|
}
 | 
						|
 | 
						|
static int ps3_host_map(struct irq_host *h, unsigned int virq,
 | 
						|
	irq_hw_number_t hwirq)
 | 
						|
{
 | 
						|
	pr_debug("%s:%d: hwirq %lu, virq %u\n", __func__, __LINE__, hwirq,
 | 
						|
		virq);
 | 
						|
 | 
						|
	set_irq_chip_and_handler(virq, &ps3_irq_chip, handle_fasteoi_irq);
 | 
						|
 | 
						|
	return 0;
 | 
						|
}
 | 
						|
 | 
						|
static int ps3_host_match(struct irq_host *h, struct device_node *np)
 | 
						|
{
 | 
						|
	/* Match all */
 | 
						|
	return 1;
 | 
						|
}
 | 
						|
 | 
						|
static struct irq_host_ops ps3_host_ops = {
 | 
						|
	.map = ps3_host_map,
 | 
						|
	.unmap = ps3_host_unmap,
 | 
						|
	.match = ps3_host_match,
 | 
						|
};
 | 
						|
 | 
						|
void __init ps3_register_ipi_debug_brk(unsigned int cpu, unsigned int virq)
 | 
						|
{
 | 
						|
	struct ps3_private *pd = &per_cpu(ps3_private, cpu);
 | 
						|
 | 
						|
	pd->bmp.ipi_debug_brk_mask = 0x8000000000000000UL >> virq;
 | 
						|
 | 
						|
	pr_debug("%s:%d: cpu %u, virq %u, mask %lxh\n", __func__, __LINE__,
 | 
						|
		cpu, virq, pd->bmp.ipi_debug_brk_mask);
 | 
						|
}
 | 
						|
 | 
						|
static unsigned int ps3_get_irq(void)
 | 
						|
{
 | 
						|
	struct ps3_private *pd = &__get_cpu_var(ps3_private);
 | 
						|
	u64 x = (pd->bmp.status & pd->bmp.mask);
 | 
						|
	unsigned int plug;
 | 
						|
 | 
						|
	/* check for ipi break first to stop this cpu ASAP */
 | 
						|
 | 
						|
	if (x & pd->bmp.ipi_debug_brk_mask)
 | 
						|
		x &= pd->bmp.ipi_debug_brk_mask;
 | 
						|
 | 
						|
	asm volatile("cntlzd %0,%1" : "=r" (plug) : "r" (x));
 | 
						|
	plug &= 0x3f;
 | 
						|
 | 
						|
	if (unlikely(plug == NO_IRQ)) {
 | 
						|
		pr_debug("%s:%d: no plug found: thread_id %lu\n", __func__,
 | 
						|
			__LINE__, pd->thread_id);
 | 
						|
		dump_bmp(&per_cpu(ps3_private, 0));
 | 
						|
		dump_bmp(&per_cpu(ps3_private, 1));
 | 
						|
		return NO_IRQ;
 | 
						|
	}
 | 
						|
 | 
						|
#if defined(DEBUG)
 | 
						|
	if (unlikely(plug < NUM_ISA_INTERRUPTS || plug > PS3_PLUG_MAX)) {
 | 
						|
		dump_bmp(&per_cpu(ps3_private, 0));
 | 
						|
		dump_bmp(&per_cpu(ps3_private, 1));
 | 
						|
		BUG();
 | 
						|
	}
 | 
						|
#endif
 | 
						|
	return plug;
 | 
						|
}
 | 
						|
 | 
						|
void __init ps3_init_IRQ(void)
 | 
						|
{
 | 
						|
	int result;
 | 
						|
	unsigned cpu;
 | 
						|
	struct irq_host *host;
 | 
						|
 | 
						|
	host = irq_alloc_host(NULL, IRQ_HOST_MAP_NOMAP, 0, &ps3_host_ops,
 | 
						|
		PS3_INVALID_OUTLET);
 | 
						|
	irq_set_default_host(host);
 | 
						|
	irq_set_virq_count(PS3_PLUG_MAX + 1);
 | 
						|
 | 
						|
	for_each_possible_cpu(cpu) {
 | 
						|
		struct ps3_private *pd = &per_cpu(ps3_private, cpu);
 | 
						|
 | 
						|
		lv1_get_logical_ppe_id(&pd->ppe_id);
 | 
						|
		pd->thread_id = get_hard_smp_processor_id(cpu);
 | 
						|
		spin_lock_init(&pd->bmp.lock);
 | 
						|
 | 
						|
		pr_debug("%s:%d: ppe_id %lu, thread_id %lu, bmp %lxh\n",
 | 
						|
			__func__, __LINE__, pd->ppe_id, pd->thread_id,
 | 
						|
			ps3_mm_phys_to_lpar(__pa(&pd->bmp)));
 | 
						|
 | 
						|
		result = lv1_configure_irq_state_bitmap(pd->ppe_id,
 | 
						|
			pd->thread_id, ps3_mm_phys_to_lpar(__pa(&pd->bmp)));
 | 
						|
 | 
						|
		if (result)
 | 
						|
			pr_debug("%s:%d: lv1_configure_irq_state_bitmap failed:"
 | 
						|
				" %s\n", __func__, __LINE__,
 | 
						|
				ps3_result(result));
 | 
						|
	}
 | 
						|
 | 
						|
	ppc_md.get_irq = ps3_get_irq;
 | 
						|
}
 | 
						|
 | 
						|
void ps3_shutdown_IRQ(int cpu)
 | 
						|
{
 | 
						|
	int result;
 | 
						|
	u64 ppe_id;
 | 
						|
	u64 thread_id = get_hard_smp_processor_id(cpu);
 | 
						|
 | 
						|
	lv1_get_logical_ppe_id(&ppe_id);
 | 
						|
	result = lv1_configure_irq_state_bitmap(ppe_id, thread_id, 0);
 | 
						|
 | 
						|
	DBG("%s:%d: lv1_configure_irq_state_bitmap (%lu:%lu/%d) %s\n", __func__,
 | 
						|
		__LINE__, ppe_id, thread_id, cpu, ps3_result(result));
 | 
						|
}
 |