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freebsd/sys/dev/pccbb/pccbb_pci.c
Adrian Chadd b0fa0cba65 Restore the PCI bridge configuration upon resume. 
This allows my TI1510 cardbus/PCI bridge to work after a suspend/resume,
without having to unload/reload the cbb driver.

I've also tested this on stable/9.  I'll MFC it shortly.

PR:		kern/170058
Reviewed by:	jhb
MFC after:	1 day
2012-07-31 18:47:17 +00:00

867 lines
30 KiB
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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");
}
sc->sc_root_token = root_mount_hold(device_get_nameunit(sc->dev));
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);
/* Restore bus configuration */
pci_write_config(sc->dev, PCIR_PRIBUS_2, sc->pribus, 1);
pci_write_config(sc->dev, PCIR_SECBUS_2, sc->secbus, 1);
pci_write_config(sc->dev, PCIR_SUBBUS_2, sc->subbus, 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);
/*
* We're about to pull the rug out from the card, so mark it as
* gone to prevent harm.
*/
sc->cardok = 0;
/*
* 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, u_int b, u_int s, u_int f, u_int reg, int width)
{
/*
* Pass through to the next ppb up the chain (i.e. our grandparent).
*/
return (PCIB_READ_CONFIG(device_get_parent(device_get_parent(brdev)),
b, s, f, reg, width));
}
static void
cbb_write_config(device_t brdev, u_int b, u_int s, u_int f, u_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_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),
DEVMETHOD_END
};
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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