109 lines
2.8 KiB
C
109 lines
2.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2021 Western Digital Corporation or its affiliates.
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* Copyright (C) 2022 Ventana Micro Systems Inc.
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*/
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#ifndef _IRQ_RISCV_IMSIC_STATE_H
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#define _IRQ_RISCV_IMSIC_STATE_H
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#include <linux/irqchip/riscv-imsic.h>
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#include <linux/irqdomain.h>
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#include <linux/fwnode.h>
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#include <linux/timer.h>
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#define IMSIC_IPI_ID 1
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#define IMSIC_NR_IPI 8
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struct imsic_vector {
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/* Fixed details of the vector */
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unsigned int cpu;
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unsigned int local_id;
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/* Details saved by driver in the vector */
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unsigned int hwirq;
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/* Details accessed using local lock held */
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bool enable;
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struct imsic_vector *move;
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};
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struct imsic_local_priv {
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/* Local lock to protect vector enable/move variables and dirty bitmap */
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raw_spinlock_t lock;
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/* Local dirty bitmap for synchronization */
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unsigned long *dirty_bitmap;
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#ifdef CONFIG_SMP
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/* Local timer for synchronization */
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struct timer_list timer;
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#endif
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/* Local vector table */
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struct imsic_vector *vectors;
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};
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struct imsic_priv {
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/* Device details */
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struct fwnode_handle *fwnode;
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/* Global configuration common for all HARTs */
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struct imsic_global_config global;
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/* Per-CPU state */
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struct imsic_local_priv __percpu *lpriv;
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/* State of IRQ matrix allocator */
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raw_spinlock_t matrix_lock;
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struct irq_matrix *matrix;
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/* IRQ domains (created by platform driver) */
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struct irq_domain *base_domain;
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};
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extern struct imsic_priv *imsic;
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void __imsic_eix_update(unsigned long base_id, unsigned long num_id, bool pend, bool val);
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static inline void __imsic_id_set_enable(unsigned long id)
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{
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__imsic_eix_update(id, 1, false, true);
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}
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static inline void __imsic_id_clear_enable(unsigned long id)
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{
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__imsic_eix_update(id, 1, false, false);
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}
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void imsic_local_sync_all(void);
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void imsic_local_delivery(bool enable);
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void imsic_vector_mask(struct imsic_vector *vec);
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void imsic_vector_unmask(struct imsic_vector *vec);
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static inline bool imsic_vector_isenabled(struct imsic_vector *vec)
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{
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return READ_ONCE(vec->enable);
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}
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static inline struct imsic_vector *imsic_vector_get_move(struct imsic_vector *vec)
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{
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return READ_ONCE(vec->move);
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}
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void imsic_vector_move(struct imsic_vector *old_vec, struct imsic_vector *new_vec);
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struct imsic_vector *imsic_vector_from_local_id(unsigned int cpu, unsigned int local_id);
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struct imsic_vector *imsic_vector_alloc(unsigned int hwirq, const struct cpumask *mask);
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void imsic_vector_free(struct imsic_vector *vector);
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void imsic_vector_debug_show(struct seq_file *m, struct imsic_vector *vec, int ind);
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void imsic_vector_debug_show_summary(struct seq_file *m, int ind);
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void imsic_state_online(void);
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void imsic_state_offline(void);
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int imsic_setup_state(struct fwnode_handle *fwnode);
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int imsic_irqdomain_init(void);
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#endif
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