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/* 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 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); 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 */ |