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.
282 lines
7.5 KiB
C
282 lines
7.5 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2008 Deglitch Networks, Stanislav Sedov
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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 ``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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* Driver for the AT91RM9200 CompactFlash controller operating in a
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* common memory mode. Interrupts are driven by polling. The driver
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* implements an ATA bridge and attached ATA channel driver on top
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* of it.
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* NOTE WELL: this driver uses polling mode. To achieve an acceptable
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* operating speed you will probably want to use HZ=2000 in kernel
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* config.
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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/kernel.h>
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#include <sys/module.h>
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#include <sys/time.h>
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#include <sys/bus.h>
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#include <sys/resource.h>
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#include <sys/rman.h>
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#include <sys/sema.h>
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#include <sys/taskqueue.h>
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#include <vm/uma.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <machine/intr.h>
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#include <sys/ata.h>
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#include <dev/ata/ata-all.h>
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#include <ata_if.h>
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struct at91_cfata_softc {
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device_t dev;
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struct resource *mem_res;
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struct resource irq;
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void (*isr_cb)(void *);
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void *isr_arg;
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struct callout tick;
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};
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static int at91_cfata_detach(device_t dev);
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static void at91_cfata_callout(void *arg);
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static int
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at91_cfata_probe(device_t dev)
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{
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device_set_desc_copy(dev, "AT91RM9200 CompactFlash controller");
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return (0);
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}
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static int
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at91_cfata_attach(device_t dev)
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{
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struct at91_cfata_softc *sc;
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int rid, error;
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sc = device_get_softc(dev);
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sc->dev = dev;
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rid = 0;
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error = 0;
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sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
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RF_ACTIVE);
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if (sc->mem_res == NULL)
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return (ENOMEM);
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/* XXX: init CF controller? */
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callout_init(&sc->tick, 1); /* Callout to poll the device. */
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device_add_child(dev, "ata", -1);
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bus_generic_attach(dev);
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return (0);
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}
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static int
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at91_cfata_detach(device_t dev)
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{
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struct at91_cfata_softc *sc;
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sc = device_get_softc(dev);
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bus_generic_detach(sc->dev);
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if (sc->mem_res != NULL) {
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bus_release_resource(dev, SYS_RES_MEMORY,
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rman_get_rid(sc->mem_res), sc->mem_res);
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sc->mem_res = NULL;
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}
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return (0);
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}
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static struct resource *
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ata_at91_alloc_resource(device_t dev, device_t child, int type, int *rid,
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rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
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{
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struct at91_cfata_softc *sc = device_get_softc(dev);
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KASSERT(type == SYS_RES_IRQ && *rid == ATA_IRQ_RID,
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("[at91_cfata, %d]: illegal resource request (type %u rid %u)",
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__LINE__, type, *rid));
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return (&sc->irq);
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}
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static int
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ata_at91_release_resource(device_t dev, device_t child, int type, int rid,
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struct resource *r)
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{
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KASSERT(type == SYS_RES_IRQ && rid == ATA_IRQ_RID,
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("[at91_cfata, %d]: illegal resource request (type %u rid %u)",
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__LINE__, type, rid));
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return (0);
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}
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static int
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ata_at91_setup_intr(device_t dev, device_t child, struct resource *irq,
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int flags, driver_filter_t *filt,
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driver_intr_t *function, void *argument, void **cookiep)
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{
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struct at91_cfata_softc *sc = device_get_softc(dev);
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KASSERT(sc->isr_cb == NULL,
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("[at91_cfata, %d]: overwriting the old handler", __LINE__));
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sc->isr_cb = function;
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sc->isr_arg = argument;
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*cookiep = sc;
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callout_reset(&sc->tick, 1, at91_cfata_callout, sc);
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return (0);
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}
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static int
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ata_at91_teardown_intr(device_t dev, device_t child, struct resource *irq,
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void *cookie)
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{
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struct at91_cfata_softc *sc = device_get_softc(dev);
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sc->isr_cb = NULL;
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sc->isr_arg = NULL;
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return (0);
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}
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static void
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at91_cfata_callout(void *arg)
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{
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struct at91_cfata_softc *sc;
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sc = (struct at91_cfata_softc *)arg;
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if (sc->isr_cb != NULL)
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sc->isr_cb(sc->isr_arg);
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callout_reset(&sc->tick, 1, at91_cfata_callout, sc);
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}
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static int
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at91_channel_probe(device_t dev)
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{
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struct ata_channel *ch = device_get_softc(dev);
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ch->unit = 0;
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ch->flags |= ATA_USE_16BIT | ATA_NO_SLAVE;
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device_set_desc_copy(dev, "ATA channel 0");
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return (ata_probe(dev));
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}
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static int
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at91_channel_attach(device_t dev)
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{
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struct at91_cfata_softc *sc = device_get_softc(device_get_parent(dev));
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struct ata_channel *ch = device_get_softc(dev);
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int i;
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for (i = 0; i < ATA_MAX_RES; i++)
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ch->r_io[i].res = sc->mem_res;
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/*
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* CF+ Specification.
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* 6.1.3 Memory Mapped Addressing.
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*/
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ch->r_io[ATA_DATA].offset = 0x00;
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ch->r_io[ATA_FEATURE].offset = 0x01;
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ch->r_io[ATA_COUNT].offset = 0x02;
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ch->r_io[ATA_SECTOR].offset = 0x03;
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ch->r_io[ATA_CYL_LSB].offset = 0x04;
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ch->r_io[ATA_CYL_MSB].offset = 0x05;
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ch->r_io[ATA_DRIVE].offset = 0x06;
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ch->r_io[ATA_COMMAND].offset = 0x07;
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ch->r_io[ATA_ERROR].offset = 0x01;
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ch->r_io[ATA_IREASON].offset = 0x02;
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ch->r_io[ATA_STATUS].offset = 0x07;
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ch->r_io[ATA_ALTSTAT].offset = 0x0e;
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ch->r_io[ATA_CONTROL].offset = 0x0e;
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/* Should point at the base of registers. */
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ch->r_io[ATA_IDX_ADDR].offset = 0x0;
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ata_generic_hw(dev);
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return (ata_attach(dev));
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}
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static device_method_t at91_cfata_methods[] = {
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/* Device interface. */
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DEVMETHOD(device_probe, at91_cfata_probe),
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DEVMETHOD(device_attach, at91_cfata_attach),
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DEVMETHOD(device_detach, at91_cfata_detach),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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DEVMETHOD(device_suspend, bus_generic_suspend),
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DEVMETHOD(device_resume, bus_generic_resume),
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/* ATA bus methods. */
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DEVMETHOD(bus_alloc_resource, ata_at91_alloc_resource),
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DEVMETHOD(bus_release_resource, ata_at91_release_resource),
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DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
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DEVMETHOD(bus_deactivate_resource,
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bus_generic_deactivate_resource),
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DEVMETHOD(bus_setup_intr, ata_at91_setup_intr),
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DEVMETHOD(bus_teardown_intr, ata_at91_teardown_intr),
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{ 0, 0 }
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};
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devclass_t at91_cfata_devclass;
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static driver_t at91_cfata_driver = {
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"at91_cfata",
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at91_cfata_methods,
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sizeof(struct at91_cfata_softc),
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};
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DRIVER_MODULE(at91_cfata, atmelarm, at91_cfata_driver, at91_cfata_devclass, 0,
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0);
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MODULE_VERSION(at91_cfata, 1);
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MODULE_DEPEND(at91_cfata, ata, 1, 1, 1);
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/*
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* ATA channel driver.
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*/
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static device_method_t at91_channel_methods[] = {
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/* device interface */
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DEVMETHOD(device_probe, at91_channel_probe),
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DEVMETHOD(device_attach, at91_channel_attach),
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DEVMETHOD(device_detach, ata_detach),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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DEVMETHOD(device_suspend, ata_suspend),
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DEVMETHOD(device_resume, ata_resume),
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{ 0, 0 }
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};
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driver_t at91_channel_driver = {
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"ata",
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at91_channel_methods,
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sizeof(struct ata_channel),
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};
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DRIVER_MODULE(ata, at91_cfata, at91_channel_driver, ata_devclass, 0, 0);
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