freebsd-dev/sys/powerpc/include/openpicvar.h
Justin Hibbits 9e2b2d6996 powerpc/mpc85xx: Add MSI support for Freescale PowerPC SoCs
Freescale SoCs use a set of IRQs at the high end of the OpenPIC IRQ
list, not counted in the NIRQs of the Feature reporting register.  Some
SoCs include a MSI inbound window in the PCIe controller configuration
registers as well, but some don't.  Currently, this only handles the
SoCs *with* the MSI window.

There are 256 MSIs per MSI bank (32 per MSI IRQ, 8 IRQs per MSI bank).
The P5020 has 3 banks, yielding up to 768 MSIs; older SoCs have only one
bank.
2019-11-08 03:36:19 +00:00

95 lines
3.0 KiB
C

/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (C) 2002 Benno Rice.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY Benno Rice ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _POWERPC_OPENPICVAR_H_
#define _POWERPC_OPENPICVAR_H_
#define OPENPIC_DEVSTR "OpenPIC Interrupt Controller"
#define OPENPIC_IRQMAX 256 /* h/w allows more */
#define OPENPIC_QUIRK_SINGLE_BIND 1 /* Bind interrupts to only 1 CPU */
#define OPENPIC_QUIRK_HIDDEN_IRQS 2 /* May have IRQs beyond FRR[NIRQ] */
/* Names match the macros in openpicreg.h. */
struct openpic_timer {
uint32_t tcnt;
uint32_t tbase;
uint32_t tvec;
uint32_t tdst;
};
struct openpic_softc {
device_t sc_dev;
struct resource *sc_memr;
struct resource *sc_intr;
bus_space_tag_t sc_bt;
bus_space_handle_t sc_bh;
char *sc_version;
int sc_rid;
int sc_irq;
void *sc_icookie;
u_int sc_ncpu;
u_int sc_nirq;
int sc_psim;
u_int sc_quirks;
/* Saved states. */
uint32_t sc_saved_config;
uint32_t sc_saved_ipis[4];
uint32_t sc_saved_prios[4];
struct openpic_timer sc_saved_timers[OPENPIC_TIMERS];
uint32_t sc_saved_vectors[OPENPIC_SRC_VECTOR_COUNT];
};
extern devclass_t openpic_devclass;
/*
* Bus-independent attach i/f
*/
int openpic_common_attach(device_t, uint32_t);
/*
* PIC interface.
*/
void openpic_bind(device_t dev, u_int irq, cpuset_t cpumask, void **);
void openpic_config(device_t, u_int, enum intr_trigger, enum intr_polarity);
void openpic_dispatch(device_t, struct trapframe *);
void openpic_enable(device_t, u_int, u_int, void **);
void openpic_eoi(device_t, u_int, void *);
void openpic_ipi(device_t, u_int);
void openpic_mask(device_t, u_int, void *);
void openpic_unmask(device_t, u_int, void *);
int openpic_suspend(device_t dev);
int openpic_resume(device_t dev);
#endif /* _POWERPC_OPENPICVAR_H_ */