/* SPDX-License-Identifier: GPL-2.0-or-later */
|
/*
|
* Copyright 2016,2017 IBM Corporation.
|
*/
|
#ifndef __XIVE_INTERNAL_H
|
#define __XIVE_INTERNAL_H
|
|
/*
|
* A "disabled" interrupt should never fire, to catch problems
|
* we set its logical number to this
|
*/
|
#define XIVE_BAD_IRQ 0x7fffffff
|
#define XIVE_MAX_IRQ (XIVE_BAD_IRQ - 1)
|
|
/* Each CPU carry one of these with various per-CPU state */
|
struct xive_cpu {
|
#ifdef CONFIG_SMP
|
/* HW irq number and data of IPI */
|
u32 hw_ipi;
|
struct xive_irq_data ipi_data;
|
#endif /* CONFIG_SMP */
|
|
int chip_id;
|
|
/* Queue datas. Only one is populated */
|
#define XIVE_MAX_QUEUES 8
|
struct xive_q queue[XIVE_MAX_QUEUES];
|
|
/*
|
* Pending mask. Each bit corresponds to a priority that
|
* potentially has pending interrupts.
|
*/
|
u8 pending_prio;
|
|
/* Cache of HW CPPR */
|
u8 cppr;
|
};
|
|
/* Backend ops */
|
struct xive_ops {
|
int (*populate_irq_data)(u32 hw_irq, struct xive_irq_data *data);
|
int (*configure_irq)(u32 hw_irq, u32 target, u8 prio, u32 sw_irq);
|
int (*get_irq_config)(u32 hw_irq, u32 *target, u8 *prio,
|
u32 *sw_irq);
|
int (*setup_queue)(unsigned int cpu, struct xive_cpu *xc, u8 prio);
|
void (*cleanup_queue)(unsigned int cpu, struct xive_cpu *xc, u8 prio);
|
void (*setup_cpu)(unsigned int cpu, struct xive_cpu *xc);
|
void (*teardown_cpu)(unsigned int cpu, struct xive_cpu *xc);
|
bool (*match)(struct device_node *np);
|
void (*shutdown)(void);
|
|
void (*update_pending)(struct xive_cpu *xc);
|
void (*eoi)(u32 hw_irq);
|
void (*sync_source)(u32 hw_irq);
|
u64 (*esb_rw)(u32 hw_irq, u32 offset, u64 data, bool write);
|
#ifdef CONFIG_SMP
|
int (*get_ipi)(unsigned int cpu, struct xive_cpu *xc);
|
void (*put_ipi)(unsigned int cpu, struct xive_cpu *xc);
|
#endif
|
int (*debug_show)(struct seq_file *m, void *private);
|
const char *name;
|
};
|
|
bool xive_core_init(const struct xive_ops *ops, void __iomem *area, u32 offset,
|
u8 max_prio);
|
__be32 *xive_queue_page_alloc(unsigned int cpu, u32 queue_shift);
|
int xive_core_debug_init(void);
|
|
static inline u32 xive_alloc_order(u32 queue_shift)
|
{
|
return (queue_shift > PAGE_SHIFT) ? (queue_shift - PAGE_SHIFT) : 0;
|
}
|
|
extern bool xive_cmdline_disabled;
|
|
#endif /* __XIVE_INTERNAL_H */
|
