mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-26 04:05:18 +07:00
e5c86679d5
Linux IRQ #0 is reserved for error reporting and may not be used. Increase NR_IRQS for one additional slot and increase irq_domain_add_legacy parameter first_irq value to 1, so that linux IRQ #0 is not associated with hardware IRQ #0 in legacy IRQ domains. Introduce macro XTENSA_PIC_LINUX_IRQ for static translation of xtensa PIC hardware IRQ # to linux IRQ #. Use this macro in XTFPGA platform data definitions. This fixes inability to use hardware IRQ #0 in configurations that don't use device tree and allows for non-identity mapping between linux IRQ # and hardware IRQ #. Cc: stable@vger.kernel.org Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
58 lines
1.5 KiB
C
58 lines
1.5 KiB
C
/*
|
|
* include/asm-xtensa/irq.h
|
|
*
|
|
* 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) 2001 - 2005 Tensilica Inc.
|
|
*/
|
|
|
|
#ifndef _XTENSA_IRQ_H
|
|
#define _XTENSA_IRQ_H
|
|
|
|
#include <linux/init.h>
|
|
#include <platform/hardware.h>
|
|
#include <variant/core.h>
|
|
|
|
#ifdef CONFIG_VARIANT_IRQ_SWITCH
|
|
#include <variant/irq.h>
|
|
#else
|
|
static inline void variant_irq_enable(unsigned int irq) { }
|
|
static inline void variant_irq_disable(unsigned int irq) { }
|
|
#endif
|
|
|
|
#ifndef VARIANT_NR_IRQS
|
|
# define VARIANT_NR_IRQS 0
|
|
#endif
|
|
#ifndef PLATFORM_NR_IRQS
|
|
# define PLATFORM_NR_IRQS 0
|
|
#endif
|
|
#define XTENSA_NR_IRQS XCHAL_NUM_INTERRUPTS
|
|
#define NR_IRQS (XTENSA_NR_IRQS + VARIANT_NR_IRQS + PLATFORM_NR_IRQS + 1)
|
|
#define XTENSA_PIC_LINUX_IRQ(hwirq) ((hwirq) + 1)
|
|
|
|
#if VARIANT_NR_IRQS == 0
|
|
static inline void variant_init_irq(void) { }
|
|
#else
|
|
void variant_init_irq(void) __init;
|
|
#endif
|
|
|
|
static __inline__ int irq_canonicalize(int irq)
|
|
{
|
|
return (irq);
|
|
}
|
|
|
|
struct irqaction;
|
|
struct irq_domain;
|
|
|
|
void migrate_irqs(void);
|
|
int xtensa_irq_domain_xlate(const u32 *intspec, unsigned int intsize,
|
|
unsigned long int_irq, unsigned long ext_irq,
|
|
unsigned long *out_hwirq, unsigned int *out_type);
|
|
int xtensa_irq_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hw);
|
|
unsigned xtensa_map_ext_irq(unsigned ext_irq);
|
|
unsigned xtensa_get_ext_irq_no(unsigned irq);
|
|
|
|
#endif /* _XTENSA_IRQ_H */
|