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freebsd-nq/sys/dev/pccbb/pccbb_pci.c
Warner Losh d0493c85a6 Update to the interrupt handling code: 
o Try to be smarter about reading the ExCA CSC register.  Now, we only
  do it for 16-bit cards.  Add some experimental code to treat it like
  a power interrupt, but I'm not 100% sure that I like it.  It may be
  removed upon further testing.  It seemed to help in one test case, but
  the evidence may be inconclusive.  This may be beneficial for cleaning up
  exca_reset and exca_wait_ready.
o Check for CSTS events on the socket event register.  We ask for it when
  we're powering up a card, but I don't think we're otherwise using
  it.  Just ACK the interrupt for now.  In theory, we can use it
  instead of the busy wait we do in cbb_cardbus_reset.  More research
  is necessary to see if we can optimize things there when we're
  waiting for the DEVVENDOR register to become valid.
o Rework the comments a bit.  Minor tidying up.  Etc.
2008-12-11 06:27:18 +00:00

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/*-
* Copyright (c) 2002-2004 M. Warner Losh.
* Copyright (c) 2000-2001 Jonathan Chen.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
/*-
* Copyright (c) 1998, 1999 and 2000
* HAYAKAWA Koichi. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by HAYAKAWA Koichi.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Driver for PCI to CardBus Bridge chips
*
* References:
* TI Datasheets:
* http://www-s.ti.com/cgi-bin/sc/generic2.cgi?family=PCI+CARDBUS+CONTROLLERS
*
* Written by Jonathan Chen <jon@freebsd.org>
* The author would like to acknowledge:
* * HAYAKAWA Koichi: Author of the NetBSD code for the same thing
* * Warner Losh: Newbus/newcard guru and author of the pccard side of things
* * YAMAMOTO Shigeru: Author of another FreeBSD cardbus driver
* * David Cross: Author of the initial ugly hack for a specific cardbus card
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/condvar.h>
#include <sys/errno.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mutex.h>
#include <sys/sysctl.h>
#include <sys/kthread.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <machine/resource.h>
#include <sys/module.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pccard/pccardreg.h>
#include <dev/pccard/pccardvar.h>
#include <dev/exca/excareg.h>
#include <dev/exca/excavar.h>
#include <dev/pccbb/pccbbreg.h>
#include <dev/pccbb/pccbbvar.h>
#include "power_if.h"
#include "card_if.h"
#include "pcib_if.h"
#define DPRINTF(x) do { if (cbb_debug) printf x; } while (0)
#define DEVPRINTF(x) do { if (cbb_debug) device_printf x; } while (0)
#define PCI_MASK_CONFIG(DEV,REG,MASK,SIZE) \
pci_write_config(DEV, REG, pci_read_config(DEV, REG, SIZE) MASK, SIZE)
#define PCI_MASK2_CONFIG(DEV,REG,MASK1,MASK2,SIZE) \
pci_write_config(DEV, REG, ( \
pci_read_config(DEV, REG, SIZE) MASK1) MASK2, SIZE)
static void cbb_chipinit(struct cbb_softc *sc);
static int cbb_pci_filt(void *arg);
static struct yenta_chipinfo {
uint32_t yc_id;
const char *yc_name;
int yc_chiptype;
} yc_chipsets[] = {
/* Texas Instruments chips */
{PCIC_ID_TI1031, "TI1031 PCI-PC Card Bridge", CB_TI113X},
{PCIC_ID_TI1130, "TI1130 PCI-CardBus Bridge", CB_TI113X},
{PCIC_ID_TI1131, "TI1131 PCI-CardBus Bridge", CB_TI113X},
{PCIC_ID_TI1210, "TI1210 PCI-CardBus Bridge", CB_TI12XX},
{PCIC_ID_TI1211, "TI1211 PCI-CardBus Bridge", CB_TI12XX},
{PCIC_ID_TI1220, "TI1220 PCI-CardBus Bridge", CB_TI12XX},
{PCIC_ID_TI1221, "TI1221 PCI-CardBus Bridge", CB_TI12XX},
{PCIC_ID_TI1225, "TI1225 PCI-CardBus Bridge", CB_TI12XX},
{PCIC_ID_TI1250, "TI1250 PCI-CardBus Bridge", CB_TI125X},
{PCIC_ID_TI1251, "TI1251 PCI-CardBus Bridge", CB_TI125X},
{PCIC_ID_TI1251B,"TI1251B PCI-CardBus Bridge",CB_TI125X},
{PCIC_ID_TI1260, "TI1260 PCI-CardBus Bridge", CB_TI12XX},
{PCIC_ID_TI1260B,"TI1260B PCI-CardBus Bridge",CB_TI12XX},
{PCIC_ID_TI1410, "TI1410 PCI-CardBus Bridge", CB_TI12XX},
{PCIC_ID_TI1420, "TI1420 PCI-CardBus Bridge", CB_TI12XX},
{PCIC_ID_TI1421, "TI1421 PCI-CardBus Bridge", CB_TI12XX},
{PCIC_ID_TI1450, "TI1450 PCI-CardBus Bridge", CB_TI125X}, /*SIC!*/
{PCIC_ID_TI1451, "TI1451 PCI-CardBus Bridge", CB_TI12XX},
{PCIC_ID_TI1510, "TI1510 PCI-CardBus Bridge", CB_TI12XX},
{PCIC_ID_TI1520, "TI1520 PCI-CardBus Bridge", CB_TI12XX},
{PCIC_ID_TI4410, "TI4410 PCI-CardBus Bridge", CB_TI12XX},
{PCIC_ID_TI4450, "TI4450 PCI-CardBus Bridge", CB_TI12XX},
{PCIC_ID_TI4451, "TI4451 PCI-CardBus Bridge", CB_TI12XX},
{PCIC_ID_TI4510, "TI4510 PCI-CardBus Bridge", CB_TI12XX},
{PCIC_ID_TI6411, "TI6411 PCI-CardBus Bridge", CB_TI12XX},
{PCIC_ID_TI6420, "TI6420 PCI-CardBus Bridge", CB_TI12XX},
{PCIC_ID_TI6420SC, "TI6420 PCI-CardBus Bridge", CB_TI12XX},
{PCIC_ID_TI7410, "TI7410 PCI-CardBus Bridge", CB_TI12XX},
{PCIC_ID_TI7510, "TI7510 PCI-CardBus Bridge", CB_TI12XX},
{PCIC_ID_TI7610, "TI7610 PCI-CardBus Bridge", CB_TI12XX},
{PCIC_ID_TI7610M, "TI7610 PCI-CardBus Bridge", CB_TI12XX},
{PCIC_ID_TI7610SD, "TI7610 PCI-CardBus Bridge", CB_TI12XX},
{PCIC_ID_TI7610MS, "TI7610 PCI-CardBus Bridge", CB_TI12XX},
/* ENE */
{PCIC_ID_ENE_CB710, "ENE CB710 PCI-CardBus Bridge", CB_TI12XX},
{PCIC_ID_ENE_CB720, "ENE CB720 PCI-CardBus Bridge", CB_TI12XX},
{PCIC_ID_ENE_CB1211, "ENE CB1211 PCI-CardBus Bridge", CB_TI12XX},
{PCIC_ID_ENE_CB1225, "ENE CB1225 PCI-CardBus Bridge", CB_TI12XX},
{PCIC_ID_ENE_CB1410, "ENE CB1410 PCI-CardBus Bridge", CB_TI12XX},
{PCIC_ID_ENE_CB1420, "ENE CB1420 PCI-CardBus Bridge", CB_TI12XX},
/* Ricoh chips */
{PCIC_ID_RICOH_RL5C465, "RF5C465 PCI-CardBus Bridge", CB_RF5C46X},
{PCIC_ID_RICOH_RL5C466, "RF5C466 PCI-CardBus Bridge", CB_RF5C46X},
{PCIC_ID_RICOH_RL5C475, "RF5C475 PCI-CardBus Bridge", CB_RF5C47X},
{PCIC_ID_RICOH_RL5C476, "RF5C476 PCI-CardBus Bridge", CB_RF5C47X},
{PCIC_ID_RICOH_RL5C477, "RF5C477 PCI-CardBus Bridge", CB_RF5C47X},
{PCIC_ID_RICOH_RL5C478, "RF5C478 PCI-CardBus Bridge", CB_RF5C47X},
/* Toshiba products */
{PCIC_ID_TOPIC95, "ToPIC95 PCI-CardBus Bridge", CB_TOPIC95},
{PCIC_ID_TOPIC95B, "ToPIC95B PCI-CardBus Bridge", CB_TOPIC95},
{PCIC_ID_TOPIC97, "ToPIC97 PCI-CardBus Bridge", CB_TOPIC97},
{PCIC_ID_TOPIC100, "ToPIC100 PCI-CardBus Bridge", CB_TOPIC97},
/* Cirrus Logic */
{PCIC_ID_CLPD6832, "CLPD6832 PCI-CardBus Bridge", CB_CIRRUS},
{PCIC_ID_CLPD6833, "CLPD6833 PCI-CardBus Bridge", CB_CIRRUS},
{PCIC_ID_CLPD6834, "CLPD6834 PCI-CardBus Bridge", CB_CIRRUS},
/* 02Micro */
{PCIC_ID_OZ6832, "O2Micro OZ6832/6833 PCI-CardBus Bridge", CB_O2MICRO},
{PCIC_ID_OZ6860, "O2Micro OZ6836/6860 PCI-CardBus Bridge", CB_O2MICRO},
{PCIC_ID_OZ6872, "O2Micro OZ6812/6872 PCI-CardBus Bridge", CB_O2MICRO},
{PCIC_ID_OZ6912, "O2Micro OZ6912/6972 PCI-CardBus Bridge", CB_O2MICRO},
{PCIC_ID_OZ6922, "O2Micro OZ6922 PCI-CardBus Bridge", CB_O2MICRO},
{PCIC_ID_OZ6933, "O2Micro OZ6933 PCI-CardBus Bridge", CB_O2MICRO},
{PCIC_ID_OZ711E1, "O2Micro OZ711E1 PCI-CardBus Bridge", CB_O2MICRO},
{PCIC_ID_OZ711EC1, "O2Micro OZ711EC1/M1 PCI-CardBus Bridge", CB_O2MICRO},
{PCIC_ID_OZ711E2, "O2Micro OZ711E2 PCI-CardBus Bridge", CB_O2MICRO},
{PCIC_ID_OZ711M1, "O2Micro OZ711M1 PCI-CardBus Bridge", CB_O2MICRO},
{PCIC_ID_OZ711M2, "O2Micro OZ711M2 PCI-CardBus Bridge", CB_O2MICRO},
{PCIC_ID_OZ711M3, "O2Micro OZ711M3 PCI-CardBus Bridge", CB_O2MICRO},
/* SMC */
{PCIC_ID_SMC_34C90, "SMC 34C90 PCI-CardBus Bridge", CB_CIRRUS},
/* sentinel */
{0 /* null id */, "unknown", CB_UNKNOWN},
};
/************************************************************************/
/* Probe/Attach */
/************************************************************************/
static int
cbb_chipset(uint32_t pci_id, const char **namep)
{
struct yenta_chipinfo *ycp;
for (ycp = yc_chipsets; ycp->yc_id != 0 && pci_id != ycp->yc_id; ++ycp)
continue;
if (namep != NULL)
*namep = ycp->yc_name;
return (ycp->yc_chiptype);
}
static int
cbb_pci_probe(device_t brdev)
{
const char *name;
uint32_t progif;
uint32_t baseclass;
uint32_t subclass;
/*
* Do we know that we support the chipset? If so, then we
* accept the device.
*/
if (cbb_chipset(pci_get_devid(brdev), &name) != CB_UNKNOWN) {
device_set_desc(brdev, name);
return (BUS_PROBE_DEFAULT);
}
/*
* We do support generic CardBus bridges. All that we've seen
* to date have progif 0 (the Yenta spec, and successors mandate
* this).
*/
baseclass = pci_get_class(brdev);
subclass = pci_get_subclass(brdev);
progif = pci_get_progif(brdev);
if (baseclass == PCIC_BRIDGE &&
subclass == PCIS_BRIDGE_CARDBUS && progif == 0) {
device_set_desc(brdev, "PCI-CardBus Bridge");
return (BUS_PROBE_GENERIC);
}
return (ENXIO);
}
/*
* Still need this because the pci code only does power for type 0
* header devices.
*/
static void
cbb_powerstate_d0(device_t dev)
{
u_int32_t membase, irq;
if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
/* Save important PCI config data. */
membase = pci_read_config(dev, CBBR_SOCKBASE, 4);
irq = pci_read_config(dev, PCIR_INTLINE, 4);
/* Reset the power state. */
device_printf(dev, "chip is in D%d power mode "
"-- setting to D0\n", pci_get_powerstate(dev));
pci_set_powerstate(dev, PCI_POWERSTATE_D0);
/* Restore PCI config data. */
pci_write_config(dev, CBBR_SOCKBASE, membase, 4);
pci_write_config(dev, PCIR_INTLINE, irq, 4);
}
}
/*
* Print out the config space
*/
static void
cbb_print_config(device_t dev)
{
int i;
device_printf(dev, "PCI Configuration space:");
for (i = 0; i < 256; i += 4) {
if (i % 16 == 0)
printf("\n 0x%02x: ", i);
printf("0x%08x ", pci_read_config(dev, i, 4));
}
printf("\n");
}
static int
cbb_pci_attach(device_t brdev)
{
static int curr_bus_number = 2; /* XXX EVILE BAD (see below) */
struct cbb_softc *sc = (struct cbb_softc *)device_get_softc(brdev);
struct sysctl_ctx_list *sctx;
struct sysctl_oid *soid;
int rid;
device_t parent;
uint32_t pribus;
parent = device_get_parent(brdev);
mtx_init(&sc->mtx, device_get_nameunit(brdev), "cbb", MTX_DEF);
sc->chipset = cbb_chipset(pci_get_devid(brdev), NULL);
sc->dev = brdev;
sc->cbdev = NULL;
sc->exca[0].pccarddev = NULL;
sc->domain = pci_get_domain(brdev);
sc->secbus = pci_read_config(brdev, PCIR_SECBUS_2, 1);
sc->subbus = pci_read_config(brdev, PCIR_SUBBUS_2, 1);
sc->pribus = pcib_get_bus(parent);
SLIST_INIT(&sc->rl);
cbb_powerstate_d0(brdev);
rid = CBBR_SOCKBASE;
sc->base_res = bus_alloc_resource_any(brdev, SYS_RES_MEMORY, &rid,
RF_ACTIVE);
if (!sc->base_res) {
device_printf(brdev, "Could not map register memory\n");
mtx_destroy(&sc->mtx);
return (ENOMEM);
} else {
DEVPRINTF((brdev, "Found memory at %08lx\n",
rman_get_start(sc->base_res)));
}
sc->bst = rman_get_bustag(sc->base_res);
sc->bsh = rman_get_bushandle(sc->base_res);
exca_init(&sc->exca[0], brdev, sc->bst, sc->bsh, CBB_EXCA_OFFSET);
sc->exca[0].flags |= EXCA_HAS_MEMREG_WIN;
sc->exca[0].chipset = EXCA_CARDBUS;
sc->chipinit = cbb_chipinit;
sc->chipinit(sc);
/*Sysctls*/
sctx = device_get_sysctl_ctx(brdev);
soid = device_get_sysctl_tree(brdev);
SYSCTL_ADD_UINT(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "domain",
CTLFLAG_RD, &sc->domain, 0, "Domain number");
SYSCTL_ADD_UINT(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "pribus",
CTLFLAG_RD, &sc->pribus, 0, "Primary bus number");
SYSCTL_ADD_UINT(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "secbus",
CTLFLAG_RD, &sc->secbus, 0, "Secondary bus number");
SYSCTL_ADD_UINT(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "subbus",
CTLFLAG_RD, &sc->subbus, 0, "Subordinate bus number");
#if 0
SYSCTL_ADD_UINT(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "memory",
CTLFLAG_RD, &sc->subbus, 0, "Memory window open");
SYSCTL_ADD_UINT(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "premem",
CTLFLAG_RD, &sc->subbus, 0, "Prefetch memroy window open");
SYSCTL_ADD_UINT(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "io1",
CTLFLAG_RD, &sc->subbus, 0, "io range 1 open");
SYSCTL_ADD_UINT(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "io2",
CTLFLAG_RD, &sc->subbus, 0, "io range 2 open");
#endif
/*
* This is a gross hack. We should be scanning the entire pci
* tree, assigning bus numbers in a way such that we (1) can
* reserve 1 extra bus just in case and (2) all sub busses
* are in an appropriate range.
*/
DEVPRINTF((brdev, "Secondary bus is %d\n", sc->secbus));
pribus = pci_read_config(brdev, PCIR_PRIBUS_2, 1);
if (sc->secbus == 0 || sc->pribus != pribus) {
if (curr_bus_number <= sc->pribus)
curr_bus_number = sc->pribus + 1;
if (pribus != sc->pribus) {
DEVPRINTF((brdev, "Setting primary bus to %d\n",
sc->pribus));
pci_write_config(brdev, PCIR_PRIBUS_2, sc->pribus, 1);
}
sc->secbus = curr_bus_number++;
sc->subbus = curr_bus_number++;
DEVPRINTF((brdev, "Secondary bus set to %d subbus %d\n",
sc->secbus, sc->subbus));
pci_write_config(brdev, PCIR_SECBUS_2, sc->secbus, 1);
pci_write_config(brdev, PCIR_SUBBUS_2, sc->subbus, 1);
}
/* attach children */
sc->cbdev = device_add_child(brdev, "cardbus", -1);
if (sc->cbdev == NULL)
DEVPRINTF((brdev, "WARNING: cannot add cardbus bus.\n"));
else if (device_probe_and_attach(sc->cbdev) != 0)
DEVPRINTF((brdev, "WARNING: cannot attach cardbus bus!\n"));
sc->exca[0].pccarddev = device_add_child(brdev, "pccard", -1);
if (sc->exca[0].pccarddev == NULL)
DEVPRINTF((brdev, "WARNING: cannot add pccard bus.\n"));
else if (device_probe_and_attach(sc->exca[0].pccarddev) != 0)
DEVPRINTF((brdev, "WARNING: cannot attach pccard bus.\n"));
/* Map and establish the interrupt. */
rid = 0;
sc->irq_res = bus_alloc_resource_any(brdev, SYS_RES_IRQ, &rid,
RF_SHAREABLE | RF_ACTIVE);
if (sc->irq_res == NULL) {
device_printf(brdev, "Unable to map IRQ...\n");
goto err;
}
if (bus_setup_intr(brdev, sc->irq_res, INTR_TYPE_AV | INTR_MPSAFE,
cbb_pci_filt, NULL, sc, &sc->intrhand)) {
device_printf(brdev, "couldn't establish interrupt\n");
goto err;
}
/* reset 16-bit pcmcia bus */
exca_clrb(&sc->exca[0], EXCA_INTR, EXCA_INTR_RESET);
/* turn off power */
cbb_power(brdev, CARD_OFF);
/* CSC Interrupt: Card detect interrupt on */
cbb_setb(sc, CBB_SOCKET_MASK, CBB_SOCKET_MASK_CD);
/* reset interrupt */
cbb_set(sc, CBB_SOCKET_EVENT, cbb_get(sc, CBB_SOCKET_EVENT));
if (bootverbose)
cbb_print_config(brdev);
/* Start the thread */
if (kproc_create(cbb_event_thread, sc, &sc->event_thread, 0, 0,
"%s event thread", device_get_nameunit(brdev))) {
device_printf(brdev, "unable to create event thread.\n");
panic("cbb_create_event_thread");
}
return (0);
err:
if (sc->irq_res)
bus_release_resource(brdev, SYS_RES_IRQ, 0, sc->irq_res);
if (sc->base_res) {
bus_release_resource(brdev, SYS_RES_MEMORY, CBBR_SOCKBASE,
sc->base_res);
}
mtx_destroy(&sc->mtx);
return (ENOMEM);
}
static void
cbb_chipinit(struct cbb_softc *sc)
{
uint32_t mux, sysctrl, reg;
/* Set CardBus latency timer */
if (pci_read_config(sc->dev, PCIR_SECLAT_1, 1) < 0x20)
pci_write_config(sc->dev, PCIR_SECLAT_1, 0x20, 1);
/* Set PCI latency timer */
if (pci_read_config(sc->dev, PCIR_LATTIMER, 1) < 0x20)
pci_write_config(sc->dev, PCIR_LATTIMER, 0x20, 1);
/* Enable memory access */
PCI_MASK_CONFIG(sc->dev, PCIR_COMMAND,
| PCIM_CMD_MEMEN
| PCIM_CMD_PORTEN
| PCIM_CMD_BUSMASTEREN, 2);
/* disable Legacy IO */
switch (sc->chipset) {
case CB_RF5C46X:
PCI_MASK_CONFIG(sc->dev, CBBR_BRIDGECTRL,
& ~(CBBM_BRIDGECTRL_RL_3E0_EN |
CBBM_BRIDGECTRL_RL_3E2_EN), 2);
break;
default:
pci_write_config(sc->dev, CBBR_LEGACY, 0x0, 4);
break;
}
/* Use PCI interrupt for interrupt routing */
PCI_MASK2_CONFIG(sc->dev, CBBR_BRIDGECTRL,
& ~(CBBM_BRIDGECTRL_MASTER_ABORT |
CBBM_BRIDGECTRL_INTR_IREQ_ISA_EN),
| CBBM_BRIDGECTRL_WRITE_POST_EN,
2);
/*
* XXX this should be a function table, ala OLDCARD. This means
* that we could more easily support ISA interrupts for pccard
* cards if we had to.
*/
switch (sc->chipset) {
case CB_TI113X:
/*
* The TI 1031, TI 1130 and TI 1131 all require another bit
* be set to enable PCI routing of interrupts, and then
* a bit for each of the CSC and Function interrupts we
* want routed.
*/
PCI_MASK_CONFIG(sc->dev, CBBR_CBCTRL,
| CBBM_CBCTRL_113X_PCI_INTR |
CBBM_CBCTRL_113X_PCI_CSC | CBBM_CBCTRL_113X_PCI_IRQ_EN,
1);
PCI_MASK_CONFIG(sc->dev, CBBR_DEVCTRL,
& ~(CBBM_DEVCTRL_INT_SERIAL |
CBBM_DEVCTRL_INT_PCI), 1);
break;
case CB_TI12XX:
/*
* Some TI 12xx (and [14][45]xx) based pci cards
* sometimes have issues with the MFUNC register not
* being initialized due to a bad EEPROM on board.
* Laptops that this matters on have this register
* properly initialized.
*
* The TI125X parts have a different register.
*/
mux = pci_read_config(sc->dev, CBBR_MFUNC, 4);
sysctrl = pci_read_config(sc->dev, CBBR_SYSCTRL, 4);
if (mux == 0) {
mux = (mux & ~CBBM_MFUNC_PIN0) |
CBBM_MFUNC_PIN0_INTA;
if ((sysctrl & CBBM_SYSCTRL_INTRTIE) == 0)
mux = (mux & ~CBBM_MFUNC_PIN1) |
CBBM_MFUNC_PIN1_INTB;
pci_write_config(sc->dev, CBBR_MFUNC, mux, 4);
}
/*FALLTHROUGH*/
case CB_TI125X:
/*
* Disable zoom video. Some machines initialize this
* improperly and exerpience has shown that this helps
* prevent strange behavior.
*/
pci_write_config(sc->dev, CBBR_MMCTRL, 0, 4);
break;
case CB_O2MICRO:
/*
* Issue #1: INT# generated at the same time as
* selected ISA IRQ. When IREQ# or STSCHG# is active,
* in addition to the ISA IRQ being generated, INT#
* will also be generated at the same time.
*
* Some of the older controllers have an issue in
* which the slot's PCI INT# will be asserted whenever
* IREQ# or STSCGH# is asserted even if ExCA registers
* 03h or 05h have an ISA IRQ selected.
*
* The fix for this issue, which will work for any
* controller (old or new), is to set ExCA registers
* 3Ah (slot 0) & 7Ah (slot 1) bits 7:4 = 1010b.
* These bits are undocumented. By setting this
* register (of each slot) to '1010xxxxb' a routing of
* IREQ# to INTC# and STSCHG# to INTC# is selected.
* Since INTC# isn't connected there will be no
* unexpected PCI INT when IREQ# or STSCHG# is active.
* However, INTA# (slot 0) or INTB# (slot 1) will
* still be correctly generated if NO ISA IRQ is
* selected (ExCA regs 03h or 05h are cleared).
*/
reg = exca_getb(&sc->exca[0], EXCA_O2MICRO_CTRL_C);
reg = (reg & 0x0f) |
EXCA_O2CC_IREQ_INTC | EXCA_O2CC_STSCHG_INTC;
exca_putb(&sc->exca[0], EXCA_O2MICRO_CTRL_C, reg);
break;
case CB_TOPIC97:
/*
* Disable Zoom Video, ToPIC 97, 100.
*/
pci_write_config(sc->dev, TOPIC97_ZV_CONTROL, 0, 1);
/*
* ToPIC 97, 100
* At offset 0xa1: INTERRUPT CONTROL register
* 0x1: Turn on INT interrupts.
*/
PCI_MASK_CONFIG(sc->dev, TOPIC_INTCTRL,
| TOPIC97_INTCTRL_INTIRQSEL, 1);
/*
* ToPIC97, 100
* Need to assert support for low voltage cards
*/
exca_setb(&sc->exca[0], EXCA_TOPIC97_CTRL,
EXCA_TOPIC97_CTRL_LV_MASK);
goto topic_common;
case CB_TOPIC95:
/*
* SOCKETCTRL appears to be TOPIC 95/B specific
*/
PCI_MASK_CONFIG(sc->dev, TOPIC95_SOCKETCTRL,
| TOPIC95_SOCKETCTRL_SCR_IRQSEL, 4);
topic_common:;
/*
* At offset 0xa0: SLOT CONTROL
* 0x80 Enable CardBus Functionality
* 0x40 Enable CardBus and PC Card registers
* 0x20 Lock ID in exca regs
* 0x10 Write protect ID in config regs
* Clear the rest of the bits, which defaults the slot
* in legacy mode to 0x3e0 and offset 0. (legacy
* mode is determined elsewhere)
*/
pci_write_config(sc->dev, TOPIC_SLOTCTRL,
TOPIC_SLOTCTRL_SLOTON |
TOPIC_SLOTCTRL_SLOTEN |
TOPIC_SLOTCTRL_ID_LOCK |
TOPIC_SLOTCTRL_ID_WP, 1);
/*
* At offset 0xa3 Card Detect Control Register
* 0x80 CARDBUS enbale
* 0x01 Cleared for hardware change detect
*/
PCI_MASK2_CONFIG(sc->dev, TOPIC_CDC,
| TOPIC_CDC_CARDBUS, & ~TOPIC_CDC_SWDETECT, 4);
break;
}
/*
* Need to tell ExCA registers to CSC interrupts route via PCI
* interrupts. There are two ways to do this. One is to set
* INTR_ENABLE and the other is to set CSC to 0. Since both
* methods are mutually compatible, we do both.
*/
exca_putb(&sc->exca[0], EXCA_INTR, EXCA_INTR_ENABLE);
exca_putb(&sc->exca[0], EXCA_CSC_INTR, 0);
cbb_disable_func_intr(sc);
/* close all memory and io windows */
pci_write_config(sc->dev, CBBR_MEMBASE0, 0xffffffff, 4);
pci_write_config(sc->dev, CBBR_MEMLIMIT0, 0, 4);
pci_write_config(sc->dev, CBBR_MEMBASE1, 0xffffffff, 4);
pci_write_config(sc->dev, CBBR_MEMLIMIT1, 0, 4);
pci_write_config(sc->dev, CBBR_IOBASE0, 0xffffffff, 4);
pci_write_config(sc->dev, CBBR_IOLIMIT0, 0, 4);
pci_write_config(sc->dev, CBBR_IOBASE1, 0xffffffff, 4);
pci_write_config(sc->dev, CBBR_IOLIMIT1, 0, 4);
}
static int
cbb_route_interrupt(device_t pcib, device_t dev, int pin)
{
struct cbb_softc *sc = (struct cbb_softc *)device_get_softc(pcib);
return (rman_get_start(sc->irq_res));
}
static int
cbb_pci_shutdown(device_t brdev)
{
struct cbb_softc *sc = (struct cbb_softc *)device_get_softc(brdev);
/*
* Place the cards in reset, turn off the interrupts and power
* down the socket.
*/
PCI_MASK_CONFIG(brdev, CBBR_BRIDGECTRL, |CBBM_BRIDGECTRL_RESET, 2);
exca_clrb(&sc->exca[0], EXCA_INTR, EXCA_INTR_RESET);
cbb_set(sc, CBB_SOCKET_MASK, 0);
cbb_set(sc, CBB_SOCKET_EVENT, 0xffffffff);
cbb_power(brdev, CARD_OFF);
/*
* For paranoia, turn off all address decoding. Really not needed,
* it seems, but it can't hurt
*/
exca_putb(&sc->exca[0], EXCA_ADDRWIN_ENABLE, 0);
pci_write_config(brdev, CBBR_MEMBASE0, 0, 4);
pci_write_config(brdev, CBBR_MEMLIMIT0, 0, 4);
pci_write_config(brdev, CBBR_MEMBASE1, 0, 4);
pci_write_config(brdev, CBBR_MEMLIMIT1, 0, 4);
pci_write_config(brdev, CBBR_IOBASE0, 0, 4);
pci_write_config(brdev, CBBR_IOLIMIT0, 0, 4);
pci_write_config(brdev, CBBR_IOBASE1, 0, 4);
pci_write_config(brdev, CBBR_IOLIMIT1, 0, 4);
return (0);
}
static int
cbb_pci_filt(void *arg)
{
struct cbb_softc *sc = arg;
uint32_t sockevent;
uint8_t csc;
int retval = FILTER_STRAY;
/*
* Some chips also require us to read the old ExCA registe for card
* status change when we route CSC vis PCI. This isn't supposed to be
* required, but it clears the interrupt state on some chipsets.
* Maybe there's a setting that would obviate its need. Maybe we
* should test the status bits and deal with them, but so far we've
* not found any machines that don't also give us the socket status
* indication above.
*
* This call used to be unconditional. However, further research
* suggests that we hit this condition when the card READY interrupt
* fired. So now we only read it for 16-bit cards, and we only claim
* the interrupt if READY is set. If this still causes problems, then
* the next step would be to read this if we have a 16-bit card *OR*
* we have no card. We treat the READY signal as if it were the power
* completion signal. Some bridges may double signal things here, bit
* signalling twice should be OK since we only sleep on the powerintr
* in one place and a double wakeup would be benign there.
*/
if (sc->flags & CBB_16BIT_CARD) {
csc = exca_getb(&sc->exca[0], EXCA_CSC);
if (csc & EXCA_CSC_READY) {
atomic_add_int(&sc->powerintr, 1);
wakeup((void *)&sc->powerintr);
retval = FILTER_HANDLED;
}
}
/*
* Read the socket event. Sometimes, the theory goes, the PCI bus is
* so loaded that it cannot satisfy the read request, so we get
* garbage back from the following read. We have to filter out the
* garbage so that we don't spontaneously reset the card under high
* load. PCI isn't supposed to act like this. No doubt this is a bug
* in the PCI bridge chipset (or cbb brige) that's being used in
* certain amd64 laptops today. Work around the issue by assuming
* that any bits we don't know about being set means that we got
* garbage.
*/
sockevent = cbb_get(sc, CBB_SOCKET_EVENT);
if (sockevent != 0 && (sockevent & ~CBB_SOCKET_EVENT_VALID_MASK) == 0) {
/*
* If anything has happened to the socket, we assume that the
* card is no longer OK, and we shouldn't call its ISR. We
* set cardok as soon as we've attached the card. This helps
* in a noisy eject, which happens all too often when users
* are ejecting their PC Cards.
*
* We use this method in preference to checking to see if the
* card is still there because the check suffers from a race
* condition in the bouncing case.
*/
#define DELTA (CBB_SOCKET_MASK_CD)
if (sockevent & DELTA) {
cbb_clrb(sc, CBB_SOCKET_MASK, DELTA);
cbb_set(sc, CBB_SOCKET_EVENT, DELTA);
sc->cardok = 0;
cbb_disable_func_intr(sc);
wakeup(&sc->intrhand);
}
#undef DELTA
/*
* Wakeup anybody waiting for a power interrupt. We have to
* use atomic_add_int for wakups on other cores.
*/
if (sockevent & CBB_SOCKET_EVENT_POWER) {
cbb_clrb(sc, CBB_SOCKET_MASK, CBB_SOCKET_EVENT_POWER);
cbb_set(sc, CBB_SOCKET_EVENT, CBB_SOCKET_EVENT_POWER);
atomic_add_int(&sc->powerintr, 1);
wakeup((void *)&sc->powerintr);
}
/*
* Status change interrupts aren't presently used in the
* rest of the driver. For now, just ACK them.
*/
if (sockevent & CBB_SOCKET_EVENT_CSTS)
cbb_set(sc, CBB_SOCKET_EVENT, CBB_SOCKET_EVENT_CSTS);
retval = FILTER_HANDLED;
}
return retval;
}
/************************************************************************/
/* PCI compat methods */
/************************************************************************/
static int
cbb_maxslots(device_t brdev)
{
return (0);
}
static uint32_t
cbb_read_config(device_t brdev, int b, int s, int f, int reg, int width)
{
uint32_t rv;
/*
* Pass through to the next ppb up the chain (i.e. our grandparent).
*/
rv = PCIB_READ_CONFIG(device_get_parent(device_get_parent(brdev)),
b, s, f, reg, width);
return (rv);
}
static void
cbb_write_config(device_t brdev, int b, int s, int f, int reg, uint32_t val,
int width)
{
/*
* Pass through to the next ppb up the chain (i.e. our grandparent).
*/
PCIB_WRITE_CONFIG(device_get_parent(device_get_parent(brdev)),
b, s, f, reg, val, width);
}
static device_method_t cbb_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, cbb_pci_probe),
DEVMETHOD(device_attach, cbb_pci_attach),
DEVMETHOD(device_detach, cbb_detach),
DEVMETHOD(device_shutdown, cbb_pci_shutdown),
DEVMETHOD(device_suspend, cbb_suspend),
DEVMETHOD(device_resume, cbb_resume),
/* bus methods */
DEVMETHOD(bus_print_child, bus_generic_print_child),
DEVMETHOD(bus_read_ivar, cbb_read_ivar),
DEVMETHOD(bus_write_ivar, cbb_write_ivar),
DEVMETHOD(bus_alloc_resource, cbb_alloc_resource),
DEVMETHOD(bus_release_resource, cbb_release_resource),
DEVMETHOD(bus_activate_resource, cbb_activate_resource),
DEVMETHOD(bus_deactivate_resource, cbb_deactivate_resource),
DEVMETHOD(bus_driver_added, cbb_driver_added),
DEVMETHOD(bus_child_detached, cbb_child_detached),
DEVMETHOD(bus_setup_intr, cbb_setup_intr),
DEVMETHOD(bus_teardown_intr, cbb_teardown_intr),
DEVMETHOD(bus_child_present, cbb_child_present),
/* 16-bit card interface */
DEVMETHOD(card_set_res_flags, cbb_pcic_set_res_flags),
DEVMETHOD(card_set_memory_offset, cbb_pcic_set_memory_offset),
/* power interface */
DEVMETHOD(power_enable_socket, cbb_power_enable_socket),
DEVMETHOD(power_disable_socket, cbb_power_disable_socket),
/* pcib compatibility interface */
DEVMETHOD(pcib_maxslots, cbb_maxslots),
DEVMETHOD(pcib_read_config, cbb_read_config),
DEVMETHOD(pcib_write_config, cbb_write_config),
DEVMETHOD(pcib_route_interrupt, cbb_route_interrupt),
{0,0}
};
static driver_t cbb_driver = {
"cbb",
cbb_methods,
sizeof(struct cbb_softc)
};
DRIVER_MODULE(cbb, pci, cbb_driver, cbb_devclass, 0, 0);
MODULE_DEPEND(cbb, exca, 1, 1, 1);
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