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c477138f19
Currently IOAPIC pins are represented using various types, including uint16_t,
int, uint8_t and uint32_t. This patch converts all pins to uint8_t since the
maximum number of interrupt input pins per IOAPIC is limited to 240. The special
value IOAPIC_INVALID_PIN is defined to indicate that a valid pin cannot be
found.
This type clean up also has the following impacts.
* The values in the ''legacy_irq_to_pin'' table are piggybacked with their
trigger mode. This patch splits them as the piggyback prevents us from
using a uint8_t[] for this table, and these two information are never used
at the same time.
* The ''offset'' parameter in ioapic_read_reg32 & ioapic_write_reg32 are
promoted to uint32_t to minimize explicit type conversions and keep
aligned with the type of formal parameters of mmio_(read|write)_long.
Tracked-on: ccm0001001-247033
Signed-off-by: Junjie Mao <junjie.mao@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
/*
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* Copyright (C) 2018 Intel Corporation. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef IOAPIC_H
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#define IOAPIC_H
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/* IOAPIC_MAX_LINES is architecturally defined.
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* The usable RTEs may be a subset of the total on a per IO APIC basis.
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*/
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#define IOAPIC_MAX_LINES 120U
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#define NR_LEGACY_IRQ 16U
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#define NR_LEGACY_PIN NR_LEGACY_IRQ
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#define NR_MAX_GSI (CONFIG_NR_IOAPICS*IOAPIC_MAX_LINES)
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#define GSI_MASK_IRQ(irq) irq_gsi_mask_unmask((irq), true)
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#define GSI_UNMASK_IRQ(irq) irq_gsi_mask_unmask((irq), false)
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#define GSI_SET_RTE(irq, rte) ioapic_set_rte((irq), (rte))
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void setup_ioapic_irq(void);
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bool irq_is_gsi(uint32_t irq);
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uint32_t irq_gsi_num(void);
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uint8_t irq_to_pin(uint32_t irq);
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uint32_t pin_to_irq(uint8_t pin);
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void irq_gsi_mask_unmask(uint32_t irq, bool mask);
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void ioapic_set_rte(uint32_t irq, uint64_t rte);
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void ioapic_get_rte(uint32_t irq, uint64_t *rte);
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void suspend_ioapic(void);
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void resume_ioapic(void);
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extern uint8_t legacy_irq_to_pin[];
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extern uint8_t pic_ioapic_pin_map[];
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#ifdef HV_DEBUG
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int get_ioapic_info(char *str, int str_max_len);
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#endif /* HV_DEBUG */
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#endif /* IOAPIC_H */
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