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(INTR_FILTER). This includes: o Save a pointer to the sapic structure and IRQ for every vector, so that we can quickly EOI, mask and unmask the interrupt. o Add locking to the sapic code now that we can reprogram a sapic on multiple CPUs at the same time. o Use u_int for the vector and IRQ. We only have 256 vectors, so using a 64-bit type for it is rather excessive. o Properly handle concurrent registration of a handler for the same vector. Since vectors have a corresponding priority, we should not map IRQs to vectors in a linear fashion, but rather pick a vector that has a priority in line with the interrupt type. This is left for later. The vector/IRQ interchange has been untangled as much as possible to make this easier. Approved by: re (blacket)
56 lines
2.1 KiB
C
56 lines
2.1 KiB
C
/*-
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* Copyright (c) 1998 Doug Rabson
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_INTR_H_
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#define _MACHINE_INTR_H_
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/*
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* Layout of the Processor Interrupt Block.
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*/
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struct ia64_interrupt_block
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{
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u_int64_t ib_ipi[0x20000]; /* 1Mb of IPI interrupts */
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u_int8_t ib_reserved1[0xe0000];
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u_int8_t ib_inta; /* Generate INTA cycle */
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u_int8_t ib_reserved2[7];
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u_int8_t ib_xtp; /* XTP cycle */
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u_int8_t ib_reserved3[7];
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u_int8_t ib_reserved4[0x1fff0];
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};
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extern u_int64_t ia64_lapic_address;
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#define IA64_INTERRUPT_BLOCK \
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(struct ia64_interrupt_block *)IA64_PHYS_TO_RR6(ia64_lapic_address)
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int ia64_setup_intr(const char *name, int irq, driver_filter_t filter,
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driver_intr_t handler, void *arg, enum intr_type flags, void **cookiep);
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int ia64_teardown_intr(void *cookie);
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#endif /* !_MACHINE_INTR_H_ */
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