450 lines
12 KiB
C
450 lines
12 KiB
C
/*
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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/kernel.h>
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#include <sys/module.h>
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#include <sys/sysctl.h>
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#include <sys/systm.h>
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#include <pccard/i82365.h>
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#include <pccard/cardinfo.h>
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#include <pccard/slot.h>
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#include <pccard/pcicvar.h>
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/* Get pnp IDs */
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#include <isa/isavar.h>
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#include <dev/pcic/i82365reg.h>
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#include <dev/pccard/pccardvar.h>
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#include "card_if.h"
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static struct isa_pnp_id pcic_ids[] = {
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{PCIC_PNP_ACTIONTEC, NULL}, /* AEI0218 */
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{PCIC_PNP_IBM3765, NULL}, /* IBM3765 */
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{PCIC_PNP_82365, NULL}, /* PNP0E00 */
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{PCIC_PNP_CL_PD6720, NULL}, /* PNP0E01 */
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{PCIC_PNP_VLSI_82C146, NULL}, /* PNP0E02 */
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{PCIC_PNP_82365_CARDBUS, NULL}, /* PNP0E03 */
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{PCIC_PNP_SCM_SWAPBOX, NULL}, /* SCM0469 */
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{PCIC_NEC_PC9801_102, NULL}, /* NEC8091 */
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{PCIC_NEC_PC9821RA_E01, NULL}, /* NEC8121 */
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{0}
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};
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static struct {
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const char *name;
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u_int32_t flags;
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} bridges[] = {
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{ "Intel i82365SL-A/B", PCIC_AB_POWER},
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{ "IBM PCIC", PCIC_AB_POWER},
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{ "VLSI 82C146", PCIC_AB_POWER},
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{ "Cirrus logic 672x", PCIC_PD_POWER},
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{ "Cirrus logic 6710", PCIC_PD_POWER},
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{ "Vadem 365", PCIC_VG_POWER},
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{ "Vadem 465", PCIC_VG_POWER},
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{ "Vadem 468", PCIC_VG_POWER},
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{ "Vadem 469", PCIC_VG_POWER},
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{ "Ricoh RF5C296", PCIC_RICOH_POWER},
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{ "Ricoh RF5C396", PCIC_RICOH_POWER},
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{ "IBM KING", PCIC_KING_POWER},
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{ "Intel i82365SL-DF", PCIC_DF_POWER}
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};
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static driver_intr_t pcicintr;
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static int pcicintr1(void *);
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static timeout_t pcictimeout;
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static int pcic_override_irq = 0;
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TUNABLE_INT("machdep.pccard.pcic_irq", &pcic_override_irq);
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TUNABLE_INT("hw.pcic.irq", &pcic_override_irq);
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SYSCTL_DECL(_hw_pcic);
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SYSCTL_INT(_hw_pcic, OID_AUTO, override_irq, CTLFLAG_RD,
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&pcic_override_irq, 0,
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"Override the IRQ configured by the config system for all pcic devices");
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/*
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* Look for an Intel PCIC (or compatible).
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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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pcic_isa_probe(device_t dev)
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{
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int slotnum, validslots = 0;
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struct pcic_slot *sp;
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struct pcic_slot *sp0;
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struct pcic_slot *sp1;
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struct pcic_slot spsave;
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unsigned char c;
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struct resource *r;
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int rid;
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struct pcic_softc *sc;
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int error;
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/* Check isapnp ids */
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error = ISA_PNP_PROBE(device_get_parent(dev), dev, pcic_ids);
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if (error == ENXIO)
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return (ENXIO);
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if (bus_get_resource_start(dev, SYS_RES_IOPORT, 0) == 0)
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bus_set_resource(dev, SYS_RES_IOPORT, 0, PCIC_PORT_0,
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PCIC_NPORT);
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rid = 0;
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r = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1, RF_ACTIVE);
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if (!r) {
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if (bootverbose)
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device_printf(dev, "Cannot get I/O range\n");
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return (ENOMEM);
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}
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sc = (struct pcic_softc *) device_get_softc(dev);
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sc->dev = dev;
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sp = &sc->slots[0];
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for (slotnum = 0; slotnum < PCIC_CARD_SLOTS; slotnum++, sp++) {
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/*
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* Initialise the PCIC slot table.
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*/
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sp->getb = pcic_getb_io;
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sp->putb = pcic_putb_io;
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sp->bst = rman_get_bustag(r);
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sp->bsh = rman_get_bushandle(r);
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sp->offset = slotnum * PCIC_SLOT_SIZE;
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sp->controller = -1;
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}
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/*
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* Prescan for the broken VLSI chips.
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*
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* According to the Linux PCMCIA code from David Hinds,
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* working chipsets return 0x84 from their (correct) ID ports,
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* while the broken ones would need to be probed at the new
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* offset we set after we assume it's broken.
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*
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* Note: because of this, we may incorrectly detect a single
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* slot vlsi chip as a i82365sl step D. I cannot find a
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* datasheet for the affected chip, so that's the best we can
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* do for now.
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*/
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sp0 = &sc->slots[0];
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sp1 = &sc->slots[1];
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if (sp0->getb(sp0, PCIC_ID_REV) == PCIC_VLSI82C146 &&
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sp1->getb(sp1, PCIC_ID_REV) != PCIC_VLSI82C146) {
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spsave = *sp1;
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sp1->bsh += 4;
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sp1->offset = PCIC_SLOT_SIZE << 1;
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if (sp1->getb(sp1, PCIC_ID_REV) != PCIC_VLSI82C146) {
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*sp1 = spsave;
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} else {
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sp0->controller = PCIC_VLSI;
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sp1->controller = PCIC_VLSI;
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}
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}
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/*
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* Look for normal chipsets here.
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*/
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sp = &sc->slots[0];
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for (slotnum = 0; slotnum < PCIC_CARD_SLOTS; slotnum++, sp++) {
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/*
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* see if there's a PCMCIA controller here
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* Intel PCMCIA controllers use 0x82 and 0x83
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* IBM clone chips use 0x88 and 0x89, apparently
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*/
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c = sp->getb(sp, PCIC_ID_REV);
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sp->revision = -1;
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switch(c) {
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/*
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* 82365 or clones.
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*/
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case PCIC_INTEL0:
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case PCIC_INTEL1:
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sp->controller = PCIC_I82365;
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sp->revision = c & 1;
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/*
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* Check for Vadem chips by unlocking their extra
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* registers and looking for valid ID. Bit 3 in
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* the ID register is normally 0, except when
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* PCIC_VADEMREV is set. Other bridges appear
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* to ignore this frobbing.
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*/
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bus_space_write_1(sp->bst, sp->bsh, PCIC_INDEX, 0x0E);
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bus_space_write_1(sp->bst, sp->bsh, PCIC_INDEX, 0x37);
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pcic_setb(sp, PCIC_VMISC, PCIC_VADEMREV);
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c = sp->getb(sp, PCIC_ID_REV);
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if (c & 0x08) {
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switch (sp->revision = c & 7) {
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case 1:
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sp->controller = PCIC_VG365;
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break;
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case 2:
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sp->controller = PCIC_VG465;
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break;
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case 3:
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sp->controller = PCIC_VG468;
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break;
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default:
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sp->controller = PCIC_VG469;
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break;
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}
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pcic_clrb(sp, PCIC_VMISC, PCIC_VADEMREV);
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}
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/*
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* Check for RICOH RF5C[23]96 PCMCIA Controller
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*/
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c = sp->getb(sp, PCIC_RICOH_ID);
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if (c == PCIC_RID_396)
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sp->controller = PCIC_RF5C396;
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else if (c == PCIC_RID_296)
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sp->controller = PCIC_RF5C296;
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break;
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/*
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* Intel i82365sl-DF step or maybe a vlsi 82c146
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* we detected the vlsi case earlier, so if the controller
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* isn't set, we know it is a i82365sl step D.
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*/
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case PCIC_INTEL2:
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if (sp->controller == -1)
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sp->controller = PCIC_I82365SL_DF;
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break;
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case PCIC_IBM1:
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case PCIC_IBM2:
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sp->controller = PCIC_IBM;
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sp->revision = c & 1;
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break;
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case PCIC_IBM3:
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sp->controller = PCIC_IBM_KING;
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sp->revision = c & 1;
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break;
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default:
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continue;
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}
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/*
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* Check for Cirrus logic chips.
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*/
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sp->putb(sp, PCIC_CLCHIP, 0);
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c = sp->getb(sp, PCIC_CLCHIP);
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if ((c & PCIC_CLC_TOGGLE) == PCIC_CLC_TOGGLE) {
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c = sp->getb(sp, PCIC_CLCHIP);
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if ((c & PCIC_CLC_TOGGLE) == 0) {
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if (c & PCIC_CLC_DUAL)
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sp->controller = PCIC_PD672X;
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else
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sp->controller = PCIC_PD6710;
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sp->revision = 8 - ((c & 0x1F) >> 2);
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}
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}
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device_set_desc(dev, bridges[(int) sp->controller].name);
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sc->flags = bridges[(int) sp->controller].flags;
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/*
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* OK it seems we have a PCIC or lookalike.
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* Allocate a slot and initialise the data structures.
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*/
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validslots++;
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sp->slt = (struct slot *) 1;
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/*
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* Modem cards send the speaker audio (dialing noises)
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* to the host's speaker. Cirrus Logic PCIC chips must
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* enable this. There is also a Low Power Dynamic Mode bit
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* that claims to reduce power consumption by 30%, so
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* enable it and hope for the best.
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*/
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if (sp->controller == PCIC_PD672X) {
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pcic_setb(sp, PCIC_MISC1, PCIC_MISC1_SPEAKER);
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pcic_setb(sp, PCIC_MISC2, PCIC_LPDM_EN);
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}
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}
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bus_release_resource(dev, SYS_RES_IOPORT, rid, r);
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return (validslots ? 0 : ENXIO);
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}
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static int
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pcic_isa_attach(device_t dev)
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{
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struct pcic_softc *sc;
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int rid;
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struct resource *r;
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int irq = 0;
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int error;
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sc = device_get_softc(dev);
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rid = 0;
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r = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1, RF_ACTIVE);
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if (!r) {
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pcic_dealloc(dev);
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return (ENXIO);
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}
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sc->iorid = rid;
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sc->iores = r;
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sc->csc_route = isa_parallel;
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sc->func_route = isa_parallel;
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rid = 0;
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r = NULL;
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r = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1, RF_ACTIVE);
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if (r == NULL && pcic_override_irq != 0) {
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irq = pcic_override_irq;
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r = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, irq, irq, 1,
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RF_ACTIVE);
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}
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if (r && ((1 << (rman_get_start(r))) & PCIC_INT_MASK_ALLOWED) == 0) {
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device_printf(dev,
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"Hardware does not support irq %d, trying polling.\n",
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irq);
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bus_release_resource(dev, SYS_RES_IRQ, rid, r);
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irq = 0;
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r = NULL;
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}
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sc->irqrid = rid;
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sc->irqres = r;
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irq = 0;
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if (r != NULL) {
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error = bus_setup_intr(dev, r, INTR_TYPE_MISC,
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pcicintr, (void *) sc, &sc->ih);
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if (error) {
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pcic_dealloc(dev);
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return (error);
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}
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irq = rman_get_start(r);
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device_printf(dev, "management irq %d\n", irq);
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}
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sc->irq = irq;
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if (irq == 0) {
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sc->slot_poll = pcictimeout;
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sc->timeout_ch = timeout(sc->slot_poll, (void *) sc, hz/2);
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device_printf(dev, "Polling mode\n");
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}
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return (pcic_attach(dev));
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}
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/*
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* Wrapper function for pcicintr so that signatures match.
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*/
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static void
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pcicintr(void *arg)
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{
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pcicintr1(arg);
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}
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/*
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* PCIC timer. If the controller doesn't have a free IRQ to use
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* or if interrupt steering doesn't work, poll the controller for
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* insertion/removal events.
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*/
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static void
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pcictimeout(void *chan)
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{
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struct pcic_softc *sc = (struct pcic_softc *) chan;
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if (pcicintr1(chan) != 0) {
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device_printf(sc->dev,
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"Static bug detected, ignoring hardware.");
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sc->slot_poll = 0;
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return;
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}
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sc->timeout_ch = timeout(sc->slot_poll, chan, hz/2);
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}
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/*
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* PCIC Interrupt handler.
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* Check each slot in turn, and read the card status change
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* register. If this is non-zero, then a change has occurred
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* on this card, so send an event to the main code.
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*/
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static int
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pcicintr1(void *arg)
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{
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int slot, s;
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u_int8_t chg;
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struct pcic_softc *sc = (struct pcic_softc *) arg;
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struct pcic_slot *sp = &sc->slots[0];
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s = splhigh();
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for (slot = 0; slot < PCIC_CARD_SLOTS; slot++, sp++) {
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if (sp->slt == NULL)
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continue;
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if ((chg = sp->getb(sp, PCIC_STAT_CHG)) != 0) {
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/*
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* if chg is 0xff, then we know that we've hit
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* the famous "static bug" for some desktop
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* pcmcia cards. This is caused by static
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* discharge frying the poor card's mind and
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* it starts return 0xff forever. We return
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* an error and stop polling the card. When
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* we're interrupt based, we never see this.
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* The card just goes away silently.
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*/
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if (chg == 0xff) {
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splx(s);
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return (EIO);
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}
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if (chg & PCIC_CDTCH)
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pcic_do_stat_delta(sp);
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}
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}
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splx(s);
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return (0);
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}
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static device_method_t pcic_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, pcic_isa_probe),
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DEVMETHOD(device_attach, pcic_isa_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, pcic_alloc_resource),
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DEVMETHOD(bus_release_resource, bus_generic_release_resource),
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DEVMETHOD(bus_activate_resource, pcic_activate_resource),
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DEVMETHOD(bus_deactivate_resource, pcic_deactivate_resource),
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DEVMETHOD(bus_setup_intr, pcic_setup_intr),
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DEVMETHOD(bus_teardown_intr, pcic_teardown_intr),
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/* Card interface */
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DEVMETHOD(card_set_res_flags, pcic_set_res_flags),
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DEVMETHOD(card_get_res_flags, pcic_get_res_flags),
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DEVMETHOD(card_set_memory_offset, pcic_set_memory_offset),
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DEVMETHOD(card_get_memory_offset, pcic_get_memory_offset),
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{ 0, 0 }
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};
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static driver_t pcic_driver = {
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"pcic",
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pcic_methods,
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sizeof(struct pcic_softc)
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};
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DRIVER_MODULE(pcic, isa, pcic_driver, pcic_devclass, 0, 0);
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