b3e9732a76
the legacy 8259A PICs. - Implement an ICH-comptabile PCI interrupt router on the lpc device with 8 steerable pins configured via config space access to byte-wide registers at 0x60-63 and 0x68-6b. - For each configured PCI INTx interrupt, route it to both an I/O APIC pin and a PCI interrupt router pin. When a PCI INTx interrupt is asserted, ensure that both pins are asserted. - Provide an initial routing of PCI interrupt router (PIRQ) pins to 8259A pins (ISA IRQs) and initialize the interrupt line config register for the corresponding PCI function with the ISA IRQ as this matches existing hardware. - Add a global _PIC method for OSPM to select the desired interrupt routing configuration. - Update the _PRT methods for PCI bridges to provide both APIC and legacy PRT tables and return the appropriate table based on the configured routing configuration. Note that if the lpc device is not configured, no routing information is provided. - When the lpc device is enabled, provide ACPI PCI link devices corresponding to each PIRQ pin. - Add a VMM ioctl to adjust the trigger mode (edge vs level) for 8259A pins via the ELCR. - Mark the power management SCI as level triggered. - Don't hardcode the number of elements in Packages in the source for the DSDT. iasl(8) will fill in the actual number of elements, and this makes it simpler to generate a Package with a variable number of elements. Reviewed by: tycho
73 lines
2.3 KiB
C
73 lines
2.3 KiB
C
/*-
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* Copyright (c) 2013 Neel Natu <neel@freebsd.org>
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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 NETAPP, INC ``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 NETAPP, INC 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 _LPC_H_
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#define _LPC_H_
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#include <sys/linker_set.h>
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typedef void (*lpc_write_dsdt_t)(void);
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struct lpc_dsdt {
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lpc_write_dsdt_t handler;
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};
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#define LPC_DSDT(handler) \
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static struct lpc_dsdt __CONCAT(__lpc_dsdt, __LINE__) = { \
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(handler), \
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}; \
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DATA_SET(lpc_dsdt_set, __CONCAT(__lpc_dsdt, __LINE__))
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enum lpc_sysres_type {
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LPC_SYSRES_IO,
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LPC_SYSRES_MEM
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};
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struct lpc_sysres {
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enum lpc_sysres_type type;
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uint32_t base;
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uint32_t length;
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};
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#define LPC_SYSRES(type, base, length) \
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static struct lpc_sysres __CONCAT(__lpc_sysres, __LINE__) = { \
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(type), \
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(base), \
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(length) \
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}; \
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DATA_SET(lpc_sysres_set, __CONCAT(__lpc_sysres, __LINE__))
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#define SYSRES_IO(base, length) LPC_SYSRES(LPC_SYSRES_IO, base, length)
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#define SYSRES_MEM(base, length) LPC_SYSRES(LPC_SYSRES_MEM, base, length)
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int lpc_device_parse(const char *opt);
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char *lpc_pirq_name(int pin);
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void lpc_pirq_routed(void);
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#endif
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