162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0-or-later */ 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * Copyright 2016,2017 IBM Corporation. 462306a36Sopenharmony_ci */ 562306a36Sopenharmony_ci#ifndef __XIVE_INTERNAL_H 662306a36Sopenharmony_ci#define __XIVE_INTERNAL_H 762306a36Sopenharmony_ci 862306a36Sopenharmony_ci/* 962306a36Sopenharmony_ci * A "disabled" interrupt should never fire, to catch problems 1062306a36Sopenharmony_ci * we set its logical number to this 1162306a36Sopenharmony_ci */ 1262306a36Sopenharmony_ci#define XIVE_BAD_IRQ 0x7fffffff 1362306a36Sopenharmony_ci#define XIVE_MAX_IRQ (XIVE_BAD_IRQ - 1) 1462306a36Sopenharmony_ci 1562306a36Sopenharmony_ci/* Each CPU carry one of these with various per-CPU state */ 1662306a36Sopenharmony_cistruct xive_cpu { 1762306a36Sopenharmony_ci#ifdef CONFIG_SMP 1862306a36Sopenharmony_ci /* HW irq number and data of IPI */ 1962306a36Sopenharmony_ci u32 hw_ipi; 2062306a36Sopenharmony_ci struct xive_irq_data ipi_data; 2162306a36Sopenharmony_ci#endif /* CONFIG_SMP */ 2262306a36Sopenharmony_ci 2362306a36Sopenharmony_ci int chip_id; 2462306a36Sopenharmony_ci 2562306a36Sopenharmony_ci /* Queue datas. Only one is populated */ 2662306a36Sopenharmony_ci#define XIVE_MAX_QUEUES 8 2762306a36Sopenharmony_ci struct xive_q queue[XIVE_MAX_QUEUES]; 2862306a36Sopenharmony_ci 2962306a36Sopenharmony_ci /* 3062306a36Sopenharmony_ci * Pending mask. Each bit corresponds to a priority that 3162306a36Sopenharmony_ci * potentially has pending interrupts. 3262306a36Sopenharmony_ci */ 3362306a36Sopenharmony_ci u8 pending_prio; 3462306a36Sopenharmony_ci 3562306a36Sopenharmony_ci /* Cache of HW CPPR */ 3662306a36Sopenharmony_ci u8 cppr; 3762306a36Sopenharmony_ci}; 3862306a36Sopenharmony_ci 3962306a36Sopenharmony_ci/* Backend ops */ 4062306a36Sopenharmony_cistruct xive_ops { 4162306a36Sopenharmony_ci int (*populate_irq_data)(u32 hw_irq, struct xive_irq_data *data); 4262306a36Sopenharmony_ci int (*configure_irq)(u32 hw_irq, u32 target, u8 prio, u32 sw_irq); 4362306a36Sopenharmony_ci int (*get_irq_config)(u32 hw_irq, u32 *target, u8 *prio, 4462306a36Sopenharmony_ci u32 *sw_irq); 4562306a36Sopenharmony_ci int (*setup_queue)(unsigned int cpu, struct xive_cpu *xc, u8 prio); 4662306a36Sopenharmony_ci void (*cleanup_queue)(unsigned int cpu, struct xive_cpu *xc, u8 prio); 4762306a36Sopenharmony_ci void (*prepare_cpu)(unsigned int cpu, struct xive_cpu *xc); 4862306a36Sopenharmony_ci void (*setup_cpu)(unsigned int cpu, struct xive_cpu *xc); 4962306a36Sopenharmony_ci void (*teardown_cpu)(unsigned int cpu, struct xive_cpu *xc); 5062306a36Sopenharmony_ci bool (*match)(struct device_node *np); 5162306a36Sopenharmony_ci void (*shutdown)(void); 5262306a36Sopenharmony_ci 5362306a36Sopenharmony_ci void (*update_pending)(struct xive_cpu *xc); 5462306a36Sopenharmony_ci void (*sync_source)(u32 hw_irq); 5562306a36Sopenharmony_ci u64 (*esb_rw)(u32 hw_irq, u32 offset, u64 data, bool write); 5662306a36Sopenharmony_ci#ifdef CONFIG_SMP 5762306a36Sopenharmony_ci int (*get_ipi)(unsigned int cpu, struct xive_cpu *xc); 5862306a36Sopenharmony_ci void (*put_ipi)(unsigned int cpu, struct xive_cpu *xc); 5962306a36Sopenharmony_ci#endif 6062306a36Sopenharmony_ci int (*debug_show)(struct seq_file *m, void *private); 6162306a36Sopenharmony_ci int (*debug_create)(struct dentry *xive_dir); 6262306a36Sopenharmony_ci const char *name; 6362306a36Sopenharmony_ci}; 6462306a36Sopenharmony_ci 6562306a36Sopenharmony_cibool xive_core_init(struct device_node *np, const struct xive_ops *ops, 6662306a36Sopenharmony_ci void __iomem *area, u32 offset, u8 max_prio); 6762306a36Sopenharmony_ci__be32 *xive_queue_page_alloc(unsigned int cpu, u32 queue_shift); 6862306a36Sopenharmony_ciint xive_core_debug_init(void); 6962306a36Sopenharmony_ci 7062306a36Sopenharmony_cistatic inline u32 xive_alloc_order(u32 queue_shift) 7162306a36Sopenharmony_ci{ 7262306a36Sopenharmony_ci return (queue_shift > PAGE_SHIFT) ? (queue_shift - PAGE_SHIFT) : 0; 7362306a36Sopenharmony_ci} 7462306a36Sopenharmony_ci 7562306a36Sopenharmony_ciextern bool xive_cmdline_disabled; 7662306a36Sopenharmony_ciextern bool xive_has_save_restore; 7762306a36Sopenharmony_ci 7862306a36Sopenharmony_ci#endif /* __XIVE_INTERNAL_H */ 79