af3dc4a7ca
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
262 lines
5.4 KiB
C
262 lines
5.4 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2006 Benno Rice. 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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/malloc.h>
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#include <sys/rman.h>
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#include <sys/timetc.h>
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#include <machine/armreg.h>
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#include <machine/bus.h>
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#include <machine/intr.h>
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#include <arm/xscale/pxa/pxavar.h>
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#include <arm/xscale/pxa/pxareg.h>
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struct pxa_icu_softc {
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struct resource * pi_res[1];
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bus_space_tag_t pi_bst;
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bus_space_handle_t pi_bsh;
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};
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static struct resource_spec pxa_icu_spec[] = {
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{ SYS_RES_MEMORY, 0, RF_ACTIVE },
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{ -1, 0 }
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};
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static struct pxa_icu_softc *pxa_icu_softc = NULL;
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static int pxa_icu_probe(device_t);
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static int pxa_icu_attach(device_t);
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uint32_t pxa_icu_get_icip(void);
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void pxa_icu_clear_icip(int);
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uint32_t pxa_icu_get_icfp(void);
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void pxa_icu_clear_icfp(int);
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uint32_t pxa_icu_get_icmr(void);
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void pxa_icu_set_icmr(uint32_t);
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uint32_t pxa_icu_get_iclr(void);
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void pxa_icu_set_iclr(uint32_t);
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uint32_t pxa_icu_get_icpr(void);
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void pxa_icu_idle_enable(void);
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void pxa_icu_idle_disable(void);
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extern uint32_t pxa_gpio_intr_flags[];
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static int
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pxa_icu_probe(device_t dev)
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{
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device_set_desc(dev, "Interrupt Controller");
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return (0);
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}
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static int
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pxa_icu_attach(device_t dev)
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{
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int error;
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struct pxa_icu_softc *sc;
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sc = (struct pxa_icu_softc *)device_get_softc(dev);
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if (pxa_icu_softc != NULL)
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return (ENXIO);
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pxa_icu_softc = sc;
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error = bus_alloc_resources(dev, pxa_icu_spec, sc->pi_res);
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if (error) {
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device_printf(dev, "could not allocate resources\n");
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return (ENXIO);
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}
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sc->pi_bst = rman_get_bustag(sc->pi_res[0]);
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sc->pi_bsh = rman_get_bushandle(sc->pi_res[0]);
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/* Disable all interrupts. */
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pxa_icu_set_icmr(0);
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/* Route all interrupts to IRQ rather than FIQ. */
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pxa_icu_set_iclr(0);
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/* XXX: This should move to configure_final or something. */
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enable_interrupts(PSR_I|PSR_F);
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return (0);
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}
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static device_method_t pxa_icu_methods[] = {
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DEVMETHOD(device_probe, pxa_icu_probe),
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DEVMETHOD(device_attach, pxa_icu_attach),
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{0, 0}
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};
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static driver_t pxa_icu_driver = {
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"icu",
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pxa_icu_methods,
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sizeof(struct pxa_icu_softc),
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};
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static devclass_t pxa_icu_devclass;
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DRIVER_MODULE(pxaicu, pxa, pxa_icu_driver, pxa_icu_devclass, 0, 0);
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int
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arm_get_next_irq(int last __unused)
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{
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int irq;
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if ((irq = pxa_icu_get_icip()) != 0) {
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return (ffs(irq) - 1);
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}
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return (pxa_gpio_get_next_irq());
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}
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void
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arm_mask_irq(uintptr_t nb)
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{
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uint32_t mr;
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if (nb >= IRQ_GPIO0) {
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pxa_gpio_mask_irq(nb);
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return;
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}
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mr = pxa_icu_get_icmr();
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mr &= ~(1 << nb);
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pxa_icu_set_icmr(mr);
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}
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void
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arm_unmask_irq(uintptr_t nb)
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{
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uint32_t mr;
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if (nb >= IRQ_GPIO0) {
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pxa_gpio_unmask_irq(nb);
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return;
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}
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mr = pxa_icu_get_icmr();
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mr |= (1 << nb);
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pxa_icu_set_icmr(mr);
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}
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uint32_t
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pxa_icu_get_icip(void)
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{
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return (bus_space_read_4(pxa_icu_softc->pi_bst,
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pxa_icu_softc->pi_bsh, ICU_IP));
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}
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void
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pxa_icu_clear_icip(int irq)
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{
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bus_space_write_4(pxa_icu_softc->pi_bst,
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pxa_icu_softc->pi_bsh, ICU_IP, (1 << irq));
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}
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uint32_t
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pxa_icu_get_icfp(void)
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{
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return (bus_space_read_4(pxa_icu_softc->pi_bst,
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pxa_icu_softc->pi_bsh, ICU_FP));
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}
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void
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pxa_icu_clear_icfp(int irq)
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{
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bus_space_write_4(pxa_icu_softc->pi_bst,
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pxa_icu_softc->pi_bsh, ICU_FP, (1 << irq));
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}
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uint32_t
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pxa_icu_get_icmr(void)
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{
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return (bus_space_read_4(pxa_icu_softc->pi_bst,
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pxa_icu_softc->pi_bsh, ICU_MR));
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}
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void
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pxa_icu_set_icmr(uint32_t val)
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{
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bus_space_write_4(pxa_icu_softc->pi_bst,
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pxa_icu_softc->pi_bsh, ICU_MR, val);
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}
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uint32_t
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pxa_icu_get_iclr(void)
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{
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return (bus_space_read_4(pxa_icu_softc->pi_bst,
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pxa_icu_softc->pi_bsh, ICU_LR));
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}
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void
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pxa_icu_set_iclr(uint32_t val)
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{
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bus_space_write_4(pxa_icu_softc->pi_bst,
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pxa_icu_softc->pi_bsh, ICU_LR, val);
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}
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uint32_t
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pxa_icu_get_icpr(void)
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{
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return (bus_space_read_4(pxa_icu_softc->pi_bst,
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pxa_icu_softc->pi_bsh, ICU_PR));
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}
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void
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pxa_icu_idle_enable(void)
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{
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bus_space_write_4(pxa_icu_softc->pi_bst,
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pxa_icu_softc->pi_bsh, ICU_CR, 0x0);
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}
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void
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pxa_icu_idle_disable(void)
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{
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bus_space_write_4(pxa_icu_softc->pi_bst,
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pxa_icu_softc->pi_bsh, ICU_CR, 0x1);
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}
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