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449 lines
10 KiB
C
449 lines
10 KiB
C
/*
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* PLX pseudo controller
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*-------------------------------------------------------------------------
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*
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* Copyright (c) 2001 M. Warner Losh. 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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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/bus.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 <pccard/meciareg.h>
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#include <pccard/cardinfo.h>
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#include <pccard/slot.h>
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#include <dev/pccard/pccardvar.h>
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#include "card_if.h"
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#define PLXCARD_DEVICE2SOFTC(dev) \
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((struct plxcard_slot *) device_get_softc(dev))
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/*
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* Prototypes for interrupt handler.
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*/
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static driver_intr_t plxcardintr;
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static int plxcard_ioctl(struct slot *, int, caddr_t);
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static int plxcard_power(struct slot *);
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static void plxcard_mapirq(struct slot *, int);
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static timeout_t plxcard_reset;
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static void plxcard_resume(struct slot *);
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static void plxcard_disable(struct slot *);
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static int plxcard_memory(struct slot *, int);
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static int plxcard_io(struct slot *, int);
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/*
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* Per-slot data table.
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*/
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struct plxcard_slot {
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int unit; /* Unit number */
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int slotnum; /* My slot number */
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struct slot *slt; /* Back ptr to slot */
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device_t dev; /* My device */
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};
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static struct slot_ctrl plxcard_cinfo = {
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plxcard_mapirq,
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plxcard_memory,
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plxcard_io,
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plxcard_reset,
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plxcard_disable,
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plxcard_power,
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plxcard_ioctl,
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plxcard_resume,
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1,
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1
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};
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static int validunits = 0;
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/*
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* For each available slot, allocate a PC-CARD slot.
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*/
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static int
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plxcard_probe(device_t dev)
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{
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return (ENXIO);
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}
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static int
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plxcard_attach(device_t dev)
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{
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int error;
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void *ih;
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device_t kid;
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struct resource *r;
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int rid;
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struct slot *slt;
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struct plxcard_slot *sp;
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sp = PLXCARD_DEVICE2SOFTC(dev);
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sp->unit = validunits++;
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kid = device_add_child(dev, NULL, -1);
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if (kid == NULL) {
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device_printf(dev, "Can't add pccard bus slot 0\n");
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return (ENXIO);
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}
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device_probe_and_attach(kid);
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slt = pccard_init_slot(kid, &plxcard_cinfo);
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if (slt == 0) {
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device_printf(dev, "Can't get pccard info slot 0\n");
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return (ENXIO);
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}
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slt->cdata = sp;
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sp->slt = slt;
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validunits++;
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rid = 0;
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r = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1, RF_ACTIVE);
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if (r) {
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error = bus_setup_intr(dev, r, INTR_TYPE_MISC,
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plxcardintr, (void *) sp, &ih);
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if (error) {
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bus_release_resource(dev, SYS_RES_IRQ, rid, r);
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return (error);
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}
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sp->slt->irq = rman_get_start(r);
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}
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return (bus_generic_attach(dev));
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}
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/*
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* ioctl calls - Controller specific ioctls
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*/
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static int
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plxcard_ioctl(struct slot *slt, int cmd, caddr_t data)
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{
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return (ENOTTY);
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}
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/*
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* PLXCARD Interrupt handler.
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* Check the slot and report any changes.
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*/
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static void
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plxcardintr(void *arg)
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{
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}
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static int
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plxcard_memory(struct slot *slt, int win)
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{
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struct mem_desc *mp = &slt->mem[win];
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if (mp->flags & MDF_ACTIVE) {
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} else { /* !(mp->flags & MDF_ACTIVE) */
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}
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return (0);
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}
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static int
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plxcard_io(struct slot *slt, int win)
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{
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struct io_desc *ip = &slt->io[win];
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if (ip->flags & IODF_ACTIVE) {
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} else {
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}
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return (0);
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}
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static int
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plxcard_power(struct slot *slt)
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{
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return (0);
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}
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static void
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plxcard_mapirq(struct slot *slt, int irq)
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{
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}
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static void
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plxcard_reset(void *chan)
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{
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struct slot *slt = chan;
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selwakeup(&slt->selp);
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}
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static void
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plxcard_disable(struct slot *slt)
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{
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/* null function */
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}
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static void
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plxcard_resume(struct slot *slt)
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{
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/* XXX PLXCARD How ? */
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}
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static int
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plxcard_activate_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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struct pccard_devinfo *devi = device_get_ivars(child);
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int err;
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if (dev != device_get_parent(device_get_parent(child)) || devi == NULL)
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return (bus_generic_activate_resource(dev, child, type,
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rid, r));
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switch (type) {
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case SYS_RES_IOPORT: {
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struct io_desc *ip;
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ip = &devi->slt->io[rid];
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if (ip->flags == 0) {
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if (rid == 0)
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ip->flags = IODF_WS | IODF_16BIT | IODF_CS16;
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else
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ip->flags = devi->slt->io[0].flags;
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}
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ip->flags |= IODF_ACTIVE;
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ip->start = rman_get_start(r);
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ip->size = rman_get_end(r) - rman_get_start(r) + 1;
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err = plxcard_cinfo.mapio(devi->slt, rid);
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if (err)
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return (err);
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break;
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}
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case SYS_RES_IRQ:
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/*
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* We actually defer the activation of the IRQ resource
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* until the interrupt is registered to avoid stray
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* interrupt messages.
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*/
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break;
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case SYS_RES_MEMORY: {
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struct mem_desc *mp;
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if (rid >= NUM_MEM_WINDOWS)
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return (EINVAL);
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mp = &devi->slt->mem[rid];
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mp->flags |= MDF_ACTIVE;
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mp->start = (caddr_t) rman_get_start(r);
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mp->size = rman_get_end(r) - rman_get_start(r) + 1;
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err = plxcard_cinfo.mapmem(devi->slt, rid);
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if (err)
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return (err);
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break;
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}
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default:
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break;
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}
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err = bus_generic_activate_resource(dev, child, type, rid, r);
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return (err);
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}
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static int
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plxcard_deactivate_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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struct pccard_devinfo *devi = device_get_ivars(child);
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int err;
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if (dev != device_get_parent(device_get_parent(child)) || devi == NULL)
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return (bus_generic_deactivate_resource(dev, child, type,
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rid, r));
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switch (type) {
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case SYS_RES_IOPORT: {
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struct io_desc *ip = &devi->slt->io[rid];
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ip->flags &= ~IODF_ACTIVE;
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err = plxcard_cinfo.mapio(devi->slt, rid);
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if (err)
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return (err);
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break;
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}
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case SYS_RES_IRQ:
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break;
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case SYS_RES_MEMORY: {
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struct mem_desc *mp = &devi->slt->mem[rid];
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mp->flags &= ~(MDF_ACTIVE | MDF_ATTR);
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err = plxcard_cinfo.mapmem(devi->slt, rid);
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if (err)
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return (err);
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break;
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}
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default:
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break;
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}
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err = bus_generic_deactivate_resource(dev, child, type, rid, r);
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return (err);
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}
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static int
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plxcard_setup_intr(device_t dev, device_t child, struct resource *irq,
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int flags, driver_intr_t *intr, void *arg, void **cookiep)
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{
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struct pccard_devinfo *devi = device_get_ivars(child);
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int err;
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err = bus_generic_setup_intr(dev, child, irq, flags, intr, arg,
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cookiep);
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if (err == 0)
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plxcard_cinfo.mapirq(devi->slt, rman_get_start(irq));
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else
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device_printf(dev, "Error %d irq %ld\n", err,
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rman_get_start(irq));
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return (err);
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}
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static int
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plxcard_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 pccard_devinfo *devi = device_get_ivars(child);
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plxcard_cinfo.mapirq(devi->slt, 0);
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return (bus_generic_teardown_intr(dev, child, irq, cookie));
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}
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static int
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plxcard_set_res_flags(device_t bus, device_t child, int restype, int rid,
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u_long value)
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{
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struct pccard_devinfo *devi = device_get_ivars(child);
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int err = 0;
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switch (restype) {
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case SYS_RES_MEMORY: {
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struct mem_desc *mp = &devi->slt->mem[rid];
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switch (value) {
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case PCCARD_A_MEM_COM:
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mp->flags &= ~MDF_ATTR;
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break;
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case PCCARD_A_MEM_ATTR:
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mp->flags |= MDF_ATTR;
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break;
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case PCCARD_A_MEM_8BIT:
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mp->flags &= ~MDF_16BITS;
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break;
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case PCCARD_A_MEM_16BIT:
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mp->flags |= MDF_16BITS;
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break;
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}
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err = plxcard_cinfo.mapmem(devi->slt, rid);
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break;
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}
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default:
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err = EOPNOTSUPP;
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}
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return (err);
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}
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static int
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plxcard_get_res_flags(device_t bus, device_t child, int restype, int rid,
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u_long *value)
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{
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struct pccard_devinfo *devi = device_get_ivars(child);
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int err = 0;
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if (value == 0)
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return (ENOMEM);
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switch (restype) {
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case SYS_RES_IOPORT: {
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struct io_desc *ip = &devi->slt->io[rid];
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*value = ip->flags;
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break;
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}
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case SYS_RES_MEMORY: {
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struct mem_desc *mp = &devi->slt->mem[rid];
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*value = mp->flags;
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break;
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}
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default:
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err = EOPNOTSUPP;
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}
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return (err);
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}
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static int
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plxcard_set_memory_offset(device_t bus, device_t child, int rid,
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u_int32_t offset, u_int32_t *deltap)
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{
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struct pccard_devinfo *devi = device_get_ivars(child);
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struct mem_desc *mp = &devi->slt->mem[rid];
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mp->card = offset;
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if (deltap)
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*deltap = 0; /* XXX BAD XXX */
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return (plxcard_cinfo.mapmem(devi->slt, rid));
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}
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static int
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plxcard_get_memory_offset(device_t bus, device_t child, int rid,
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u_int32_t *offset)
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{
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struct pccard_devinfo *devi = device_get_ivars(child);
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struct mem_desc *mp = &devi->slt->mem[rid];
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if (offset == 0)
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return (ENOMEM);
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*offset = mp->card;
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return (0);
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}
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static device_method_t plxcard_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, plxcard_probe),
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DEVMETHOD(device_attach, plxcard_attach),
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DEVMETHOD(device_detach, bus_generic_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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/* Bus interface */
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DEVMETHOD(bus_print_child, bus_generic_print_child),
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DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource),
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DEVMETHOD(bus_release_resource, bus_generic_release_resource),
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DEVMETHOD(bus_activate_resource, plxcard_activate_resource),
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DEVMETHOD(bus_deactivate_resource, plxcard_deactivate_resource),
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DEVMETHOD(bus_setup_intr, plxcard_setup_intr),
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DEVMETHOD(bus_teardown_intr, plxcard_teardown_intr),
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/* Card interface */
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DEVMETHOD(card_set_res_flags, plxcard_set_res_flags),
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DEVMETHOD(card_get_res_flags, plxcard_get_res_flags),
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DEVMETHOD(card_set_memory_offset, plxcard_set_memory_offset),
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DEVMETHOD(card_get_memory_offset, plxcard_get_memory_offset),
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{ 0, 0 }
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};
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devclass_t plxcard_devclass;
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static driver_t plxcard_driver = {
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"plxcard",
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plxcard_methods,
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sizeof(struct plxcard_slot)
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};
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DRIVER_MODULE(plxcard, pci, plxcard_driver, plxcard_devclass, 0, 0);
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