331 lines
9.6 KiB
C
331 lines
9.6 KiB
C
/*-
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* Copyright (c) 2002 - 2004 Søren Schmidt <sos@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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* without modification, immediately at the beginning of the file.
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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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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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 "opt_ata.h"
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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/ata.h>
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#include <sys/bus.h>
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#include <sys/malloc.h>
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#include <sys/module.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/resource.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <isa/isavar.h>
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#include <dev/ata/ata-all.h>
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/* local vars */
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struct ata_cbus_controller {
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struct resource *io;
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struct resource *altio;
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struct resource *bankio;
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struct resource *irq;
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void *ih;
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void (*setmode)(struct ata_device *, int);
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void (*locking)(struct ata_channel *, int);
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int current_bank;
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struct {
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void (*function)(void *);
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void *argument;
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} interrupt[2];
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};
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/* local prototypes */
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static void ata_cbus_intr(void *);
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static void ata_cbus_banking(struct ata_channel *, int);
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static void ata_cbus_setmode(struct ata_device *, int);
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static int
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ata_cbus_probe(device_t dev)
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{
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struct resource *io;
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int rid;
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u_long tmp;
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/* dont probe PnP devices */
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if (isa_get_vendorid(dev))
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return (ENXIO);
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/* allocate the ioport range */
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rid = ATA_IOADDR_RID;
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io = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0,
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ATA_PC98_IOSIZE, RF_ACTIVE);
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if (!io)
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return ENOMEM;
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/* calculate & set the altport range */
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rid = ATA_PC98_ALTADDR_RID;
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if (bus_get_resource(dev, SYS_RES_IOPORT, rid, &tmp, &tmp)) {
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bus_set_resource(dev, SYS_RES_IOPORT, rid,
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rman_get_start(io)+ATA_PC98_ALTOFFSET, ATA_ALTIOSIZE);
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}
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/* calculate & set the bank range */
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rid = ATA_PC98_BANKADDR_RID;
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if (bus_get_resource(dev, SYS_RES_IOPORT, rid, &tmp, &tmp)) {
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bus_set_resource(dev, SYS_RES_IOPORT, rid,
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ATA_PC98_BANK, ATA_PC98_BANKIOSIZE);
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}
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bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, io);
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return 0;
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}
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static int
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ata_cbus_attach(device_t dev)
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{
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struct ata_cbus_controller *ctlr = device_get_softc(dev);
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int rid;
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/* allocate resources */
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rid = ATA_IOADDR_RID;
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ctlr->io = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0,
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ATA_PC98_IOSIZE, RF_ACTIVE);
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if (!ctlr->io)
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return ENOMEM;
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rid = ATA_PC98_ALTADDR_RID;
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ctlr->altio =
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bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
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rman_get_start(ctlr->io) + ATA_PC98_ALTOFFSET, ~0,
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ATA_ALTIOSIZE, RF_ACTIVE);
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if (!ctlr->altio) {
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bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io);
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return ENOMEM;
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}
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rid = ATA_PC98_BANKADDR_RID;
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ctlr->bankio = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
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ATA_PC98_BANK, ~0,
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ATA_PC98_BANKIOSIZE, RF_ACTIVE);
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if (!ctlr->bankio) {
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bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io);
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bus_release_resource(dev, SYS_RES_IOPORT, ATA_ALTADDR_RID, ctlr->altio);
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return ENOMEM;
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}
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rid = ATA_IRQ_RID;
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if (!(ctlr->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
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RF_ACTIVE | RF_SHAREABLE))) {
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device_printf(dev, "unable to alloc interrupt\n");
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bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io);
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bus_release_resource(dev, SYS_RES_IOPORT, ATA_ALTADDR_RID, ctlr->altio);
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bus_release_resource(dev, SYS_RES_IOPORT,
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ATA_PC98_BANKADDR_RID, ctlr->bankio);
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return ENXIO;
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}
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if ((bus_setup_intr(dev, ctlr->irq, ATA_INTR_FLAGS,
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ata_cbus_intr, ctlr, &ctlr->ih))) {
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device_printf(dev, "unable to setup interrupt\n");
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bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io);
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bus_release_resource(dev, SYS_RES_IOPORT, ATA_ALTADDR_RID, ctlr->altio);
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bus_release_resource(dev, SYS_RES_IOPORT,
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ATA_PC98_BANKADDR_RID, ctlr->bankio);
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bus_release_resource(dev, SYS_RES_IOPORT, ATA_IRQ_RID, ctlr->irq);
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return ENXIO;
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}
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ctlr->locking = ata_cbus_banking;
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ctlr->current_bank = -1;
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ctlr->setmode = ata_cbus_setmode;;
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if (!device_add_child(dev, "ata", 0))
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return ENOMEM;
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if (!device_add_child(dev, "ata", 1))
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return ENOMEM;
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return bus_generic_attach(dev);
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}
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static struct resource *
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ata_cbus_alloc_resource(device_t dev, device_t child, int type, int *rid,
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u_long start, u_long end, u_long count, u_int flags)
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{
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struct ata_cbus_controller *ctlr = device_get_softc(dev);
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if (type == SYS_RES_IOPORT) {
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switch (*rid) {
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case ATA_IOADDR_RID:
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return ctlr->io;
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case ATA_ALTADDR_RID:
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return ctlr->altio;
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}
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}
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if (type == SYS_RES_IRQ)
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return ctlr->irq;
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return 0;
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}
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static int
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ata_cbus_setup_intr(device_t dev, device_t child, struct resource *irq,
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int flags, driver_intr_t *intr, void *arg,
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void **cookiep)
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{
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struct ata_cbus_controller *controller = device_get_softc(dev);
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int unit = ((struct ata_channel *)device_get_softc(child))->unit;
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controller->interrupt[unit].function = intr;
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controller->interrupt[unit].argument = arg;
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*cookiep = controller;
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return 0;
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}
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static int
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ata_cbus_print_child(device_t dev, device_t child)
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{
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struct ata_channel *ch = device_get_softc(child);
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int retval = 0;
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retval += bus_print_child_header(dev, child);
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retval += printf(" at bank %d", ch->unit);
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retval += bus_print_child_footer(dev, child);
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return retval;
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}
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static void
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ata_cbus_intr(void *data)
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{
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struct ata_cbus_controller *ctlr = data;
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if (ctlr->current_bank != -1 &&
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ctlr->interrupt[ctlr->current_bank].argument)
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ctlr->interrupt[ctlr->current_bank].
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function(ctlr->interrupt[ctlr->current_bank].argument);
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}
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static void
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ata_cbus_banking(struct ata_channel *ch, int flags)
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{
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struct ata_cbus_controller *ctlr =
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device_get_softc(device_get_parent(ch->dev));
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switch (flags) {
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case ATA_LF_LOCK:
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if (ctlr->current_bank == ch->unit)
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break;
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while (!atomic_cmpset_acq_int(&ctlr->current_bank, -1, ch->unit))
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tsleep((caddr_t)ch->locking, PRIBIO, "atabnk", 1);
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ATA_OUTB(ctlr->bankio, 0, ch->unit);
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break;
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case ATA_LF_UNLOCK:
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if (ctlr->current_bank == -1 || ctlr->current_bank != ch->unit)
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break;
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atomic_store_rel_int(&ctlr->current_bank, -1);
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break;
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}
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return;
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}
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static void
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ata_cbus_setmode(struct ata_device *atadev, int mode)
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{
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atadev->mode = ata_limit_mode(atadev, mode, ATA_PIO_MAX);
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}
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static device_method_t ata_cbus_methods[] = {
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/* device_interface */
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DEVMETHOD(device_probe, ata_cbus_probe),
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DEVMETHOD(device_attach, ata_cbus_attach),
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/* bus methods */
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DEVMETHOD(bus_alloc_resource, ata_cbus_alloc_resource),
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DEVMETHOD(bus_setup_intr, ata_cbus_setup_intr),
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DEVMETHOD(bus_print_child, ata_cbus_print_child),
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{ 0, 0 }
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};
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static driver_t ata_cbus_driver = {
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"atacbus",
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ata_cbus_methods,
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sizeof(struct ata_cbus_controller),
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};
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static devclass_t ata_cbus_devclass;
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DRIVER_MODULE(atacbus, isa, ata_cbus_driver, ata_cbus_devclass, 0, 0);
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static int
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ata_cbussub_probe(device_t dev)
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{
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struct ata_cbus_controller *ctlr = device_get_softc(device_get_parent(dev));
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struct ata_channel *ch = device_get_softc(dev);
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device_t *children;
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int count, i;
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/* find channel number on this controller */
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device_get_children(device_get_parent(dev), &children, &count);
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for (i = 0; i < count; i++) {
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if (children[i] == dev)
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ch->unit = i;
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}
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free(children, M_TEMP);
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/* setup the resource vectors */
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for (i = ATA_DATA; i <= ATA_STATUS; i ++) {
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ch->r_io[i].res = ctlr->io;
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ch->r_io[i].offset = i << 1;
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}
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ch->r_io[ATA_ALTSTAT].res = ctlr->altio;
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ch->r_io[ATA_ALTSTAT].offset = 0;
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/* initialize softc for this channel */
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ch->flags |= ATA_USE_16BIT | ATA_USE_PC98GEOM;
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ch->locking = ctlr->locking;
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ch->device[MASTER].setmode = ctlr->setmode;
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ch->device[SLAVE].setmode = ctlr->setmode;
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ata_generic_hw(ch);
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return ata_probe(dev);
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}
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static device_method_t ata_cbussub_methods[] = {
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/* device interface */
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DEVMETHOD(device_probe, ata_cbussub_probe),
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DEVMETHOD(device_attach, ata_attach),
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DEVMETHOD(device_detach, ata_detach),
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DEVMETHOD(device_resume, ata_resume),
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{ 0, 0 }
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};
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static driver_t ata_cbussub_driver = {
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"ata",
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ata_cbussub_methods,
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sizeof(struct ata_channel),
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};
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DRIVER_MODULE(ata, atacbus, ata_cbussub_driver, ata_devclass, 0, 0);
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