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freebsd-nq/sys/dev/pccbb/pccbb.c
Marc Fonvieille 1739cac24b Fix typos: s/O2Mirco/O2Micro/ 
Approved by:	imp
2002-08-24 07:46:08 +00:00

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/*
* Copyright (c) 2002 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,
* without modification, immediately at the beginning of the file.
* 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.
*
* $FreeBSD$
*/
/*
* 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/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 <pci/pcireg.h>
#include <pci/pcivar.h>
#include <machine/clock.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)
#define CBB_START_MEM 0x88000000
#define CBB_START_32_IO 0x1000
#define CBB_START_16_IO 0x100
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},
{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},
/* 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_CIRRUS},
{PCIC_ID_OZ6860, "O2Micro OZ6836/6860 PCI-CardBus Bridge", CB_CIRRUS},
{PCIC_ID_OZ6872, "O2Micro OZ6812/6872 PCI-CardBus Bridge", CB_CIRRUS},
{PCIC_ID_OZ6912, "O2Micro OZ6912/6972 PCI-CardBus Bridge", CB_CIRRUS},
{PCIC_ID_OZ6922, "O2Micro OZ6822 PCI-CardBus Bridge", CB_CIRRUS},
{PCIC_ID_OZ6933, "O2Micro OZ6833 PCI-CardBus Bridge", CB_CIRRUS},
/* sentinel */
{0 /* null id */, "unknown", CB_UNKNOWN},
};
/* sysctl vars */
SYSCTL_NODE(_hw, OID_AUTO, cbb, CTLFLAG_RD, 0, "CBB parameters");
/* There's no way to say TUNEABLE_LONG to get the right types */
u_long cbb_start_mem = CBB_START_MEM;
TUNABLE_INT("hw.cbb.start_memory", (int *)&cbb_start_mem);
SYSCTL_ULONG(_hw_cbb, OID_AUTO, start_memory, CTLFLAG_RW,
&cbb_start_mem, CBB_START_MEM,
"Starting address for memory allocations");
u_long cbb_start_16_io = CBB_START_16_IO;
TUNABLE_INT("hw.cbb.start_16_io", (int *)&cbb_start_16_io);
SYSCTL_ULONG(_hw_cbb, OID_AUTO, start_16_io, CTLFLAG_RW,
&cbb_start_16_io, CBB_START_16_IO,
"Starting ioport for 16-bit cards");
u_long cbb_start_32_io = CBB_START_32_IO;
TUNABLE_INT("hw.cbb.start_32_io", (int *)&cbb_start_32_io);
SYSCTL_ULONG(_hw_cbb, OID_AUTO, start_32_io, CTLFLAG_RW,
&cbb_start_32_io, CBB_START_32_IO,
"Starting ioport for 32-bit cards");
int cbb_debug = 0;
TUNABLE_INT("hw.cbb.debug", &cbb_debug);
SYSCTL_ULONG(_hw_cbb, OID_AUTO, debug, CTLFLAG_RW, &cbb_debug, 0,
"Verbose cardbus bridge debugging");
static int cbb_chipset(uint32_t pci_id, const char **namep);
static int cbb_probe(device_t brdev);
static void cbb_chipinit(struct cbb_softc *sc);
static int cbb_attach(device_t brdev);
static int cbb_detach(device_t brdev);
static int cbb_shutdown(device_t brdev);
static void cbb_driver_added(device_t brdev, driver_t *driver);
static void cbb_child_detached(device_t brdev, device_t child);
static int cbb_card_reprobe(device_t brdev, device_t busdev);
static void cbb_event_thread(void *arg);
static void cbb_insert(struct cbb_softc *sc);
static void cbb_removal(struct cbb_softc *sc);
static void cbb_intr(void *arg);
static int cbb_detect_voltage(device_t brdev);
static int cbb_power(device_t brdev, int volts);
static void cbb_cardbus_reset(device_t brdev);
static int cbb_cardbus_power_enable_socket(device_t brdev,
device_t child);
static void cbb_cardbus_power_disable_socket(device_t brdev,
device_t child);
static int cbb_cardbus_io_open(device_t brdev, int win, uint32_t start,
uint32_t end);
static int cbb_cardbus_mem_open(device_t brdev, int win,
uint32_t start, uint32_t end);
static void cbb_cardbus_auto_open(struct cbb_softc *sc, int type);
static int cbb_cardbus_activate_resource(device_t brdev, device_t child,
int type, int rid, struct resource *res);
static int cbb_cardbus_deactivate_resource(device_t brdev,
device_t child, int type, int rid, struct resource *res);
static struct resource *cbb_cardbus_alloc_resource(device_t brdev,
device_t child, int type, int *rid, u_long start,
u_long end, u_long count, uint flags);
static int cbb_cardbus_release_resource(device_t brdev, device_t child,
int type, int rid, struct resource *res);
static int cbb_power_enable_socket(device_t brdev, device_t child);
static void cbb_power_disable_socket(device_t brdev, device_t child);
static int cbb_activate_resource(device_t brdev, device_t child,
int type, int rid, struct resource *r);
static int cbb_deactivate_resource(device_t brdev, device_t child,
int type, int rid, struct resource *r);
static struct resource *cbb_alloc_resource(device_t brdev, device_t child,
int type, int *rid, u_long start, u_long end, u_long count,
uint flags);
static int cbb_release_resource(device_t brdev, device_t child,
int type, int rid, struct resource *r);
static int cbb_read_ivar(device_t brdev, device_t child, int which,
uintptr_t *result);
static int cbb_write_ivar(device_t brdev, device_t child, int which,
uintptr_t value);
static int cbb_maxslots(device_t brdev);
static uint32_t cbb_read_config(device_t brdev, int b, int s, int f,
int reg, int width);
static void cbb_write_config(device_t brdev, int b, int s, int f,
int reg, uint32_t val, int width);
/*
*/
static __inline void
cbb_set(struct cbb_softc *sc, uint32_t reg, uint32_t val)
{
bus_space_write_4(sc->bst, sc->bsh, reg, val);
}
static __inline uint32_t
cbb_get(struct cbb_softc *sc, uint32_t reg)
{
return (bus_space_read_4(sc->bst, sc->bsh, reg));
}
static __inline void
cbb_setb(struct cbb_softc *sc, uint32_t reg, uint32_t bits)
{
cbb_set(sc, reg, cbb_get(sc, reg) | bits);
}
static __inline void
cbb_clrb(struct cbb_softc *sc, uint32_t reg, uint32_t bits)
{
cbb_set(sc, reg, cbb_get(sc, reg) & ~bits);
}
static void
cbb_remove_res(struct cbb_softc *sc, struct resource *res)
{
struct cbb_reslist *rle;
SLIST_FOREACH(rle, &sc->rl, link) {
if (rle->res == res) {
SLIST_REMOVE(&sc->rl, rle, cbb_reslist, link);
free(rle, M_DEVBUF);
return;
}
}
}
static struct resource *
cbb_find_res(struct cbb_softc *sc, int type, int rid)
{
struct cbb_reslist *rle;
SLIST_FOREACH(rle, &sc->rl, link)
if (SYS_RES_MEMORY == rle->type && rid == rle->rid)
return (rle->res);
return (NULL);
}
static void
cbb_insert_res(struct cbb_softc *sc, struct resource *res, int type,
int rid)
{
struct cbb_reslist *rle;
/*
* Need to record allocated resource so we can iterate through
* it later.
*/
rle = malloc(sizeof(struct cbb_reslist), M_DEVBUF, M_NOWAIT);
if (!res)
panic("cbb_cardbus_alloc_resource: can't record entry!");
rle->res = res;
rle->type = type;
rle->rid = rid;
SLIST_INSERT_HEAD(&sc->rl, rle, link);
}
static void
cbb_destroy_res(struct cbb_softc *sc)
{
struct cbb_reslist *rle;
while ((rle = SLIST_FIRST(&sc->rl)) != NULL) {
device_printf(sc->dev, "Danger Will Robinson: Resource "
"left allocated! This is a bug... "
"(rid=%x, type=%d, addr=%lx)\n", rle->rid, rle->type,
rman_get_start(rle->res));
SLIST_REMOVE_HEAD(&sc->rl, link);
free(rle, M_DEVBUF);
}
}
/************************************************************************/
/* 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_probe(device_t brdev)
{
const char *name;
uint32_t progif;
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 (0);
}
/*
* We do support generic CardBus bridges. All that we've seen
* to date have progif 0 (the Yenta spec, and successors mandate
* this). We do not support PCI PCMCIA bridges (with one exception)
* with this driver since they generally are I/O mapped. Those
* are supported by the pcic driver. This should help us be more
* future proof.
*/
subclass = pci_get_subclass(brdev);
progif = pci_get_progif(brdev);
if (subclass == PCIS_BRIDGE_CARDBUS && progif == 0) {
device_set_desc(brdev, "PCI-CardBus Bridge");
return (0);
}
return (ENXIO);
}
static void
cbb_chipinit(struct cbb_softc *sc)
{
uint32_t mux, sysctrl;
/* 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_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
* on some machines.
*/
pci_write_config(sc->dev, CBBR_MMCTRL, 0, 4);
break;
case CB_TOPIC97:
/*
* Disable Zoom Video, ToPIC 97, 100.
*/
pci_write_config(sc->dev, CBBR_TOPIC_ZV_CONTROL, 0, 1);
/*
* ToPIC 97, 100
* At offset 0xa1: INTERRUPT CONTROL register
* 0x1: Turn on INT interrupts.
*/
PCI_MASK_CONFIG(sc->dev, CBBR_TOPIC_INTCTRL,
| CBBM_TOPIC_INTCTRL_INTIRQSEL, 1);
goto topic_common;
case CB_TOPIC95:
/*
* SOCKETCTRL appears to be TOPIC 95/B specific
*/
PCI_MASK_CONFIG(sc->dev, CBBR_TOPIC_SOCKETCTRL,
| CBBM_TOPIC_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, CBBR_TOPIC_SLOTCTRL,
CBBM_TOPIC_SLOTCTRL_SLOTON |
CBBM_TOPIC_SLOTCTRL_SLOTEN |
CBBM_TOPIC_SLOTCTRL_ID_LOCK |
CBBM_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, CBBR_TOPIC_CDC,
| CBBM_TOPIC_CDC_CARDBUS,
& ~CBBM_TOPIC_CDC_SWDETECT, 4);
break;
}
/*
* Need to tell ExCA registers to route via PCI interrupts. There
* are two ways to do this. Once is to set INTR_ENABLE and the
* other is to set CSC to 0. Since both methods are mutually
* compatible, we do both.
*/
exca_write(&sc->exca, EXCA_INTR, EXCA_INTR_ENABLE);
exca_write(&sc->exca, EXCA_CSC_INTR, 0);
/* 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_attach(device_t brdev)
{
struct cbb_softc *sc = (struct cbb_softc *)device_get_softc(brdev);
int rid;
mtx_init(&sc->mtx, device_get_nameunit(brdev), "cbb", MTX_DEF);
cv_init(&sc->cv, "cbb cv");
sc->chipset = cbb_chipset(pci_get_devid(brdev), NULL);
sc->dev = brdev;
sc->cbdev = NULL;
sc->pccarddev = NULL;
sc->secbus = pci_read_config(brdev, PCIR_SECBUS_2, 1);
sc->subbus = pci_read_config(brdev, PCIR_SUBBUS_2, 1);
SLIST_INIT(&sc->rl);
#ifndef BURN_THE_BOATS
/*
* The PCI bus code should assign us memory in the absense
* of the BIOS doing so. However, 'should' isn't 'is,' so we kludge
* up something here until the PCI/acpi code properly assigns the
* resource.
*/
#endif
rid = CBBR_SOCKBASE;
sc->base_res = bus_alloc_resource(brdev, SYS_RES_MEMORY, &rid,
0, ~0, 1, RF_ACTIVE);
if (!sc->base_res) {
#ifdef BURN_THE_BOATS
device_printf(brdev, "Could not map register memory\n");
mtx_destroy(&sc->mtx);
cv_destroy(&sc->cv);
return (ENOMEM);
#else
uint32_t sockbase;
/*
* Generally, the BIOS will assign this memory for us.
* However, newer BIOSes do not because the MS design
* documents have mandated that this is for the OS
* to assign rather than the BIOS. This driver shouldn't
* be doing this, but until the pci bus code (or acpi)
* does this, we allow CardBus bridges to work on more
* machines.
*/
sockbase = pci_read_config(brdev, rid, 4);
if (sockbase < 0x100000 || sockbase >= 0xfffffff0) {
pci_write_config(brdev, rid, 0xffffffff, 4);
sockbase = pci_read_config(brdev, rid, 4);
sockbase = (sockbase & 0xfffffff0) &
-(sockbase & 0xfffffff0);
sc->base_res = bus_generic_alloc_resource(
device_get_parent(brdev), brdev, SYS_RES_MEMORY,
&rid, cbb_start_mem, ~0, sockbase,
RF_ACTIVE|rman_make_alignment_flags(sockbase));
if (!sc->base_res) {
device_printf(brdev,
"Could not grab register memory\n");
mtx_destroy(&sc->mtx);
cv_destroy(&sc->cv);
return (ENOMEM);
}
sc->flags |= CBB_KLUDGE_ALLOC;
pci_write_config(brdev, CBBR_SOCKBASE,
rman_get_start(sc->base_res), 4);
DEVPRINTF((brdev, "PCI Memory allocated: %08lx\n",
rman_get_start(sc->base_res)));
} else {
device_printf(brdev, "Could not map register memory\n");
goto err;
}
#endif
}
sc->bst = rman_get_bustag(sc->base_res);
sc->bsh = rman_get_bushandle(sc->base_res);
exca_init(&sc->exca, brdev, sc->bst, sc->bsh, CBB_EXCA_OFFSET);
sc->exca.flags |= EXCA_HAS_MEMREG_WIN;
cbb_chipinit(sc);
/* 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->cbdev = NULL;
}
sc->pccarddev = device_add_child(brdev, "pccard", -1);
if (sc->pccarddev == NULL)
DEVPRINTF((brdev, "WARNING: cannot add pccard bus.\n"));
else if (device_probe_and_attach(sc->pccarddev) != 0) {
DEVPRINTF((brdev, "WARNING: cannot attach pccard bus.\n"));
sc->pccarddev = NULL;
}
/* Map and establish the interrupt. */
rid = 0;
sc->irq_res = bus_alloc_resource(brdev, SYS_RES_IRQ, &rid, 0, ~0, 1,
RF_SHAREABLE | RF_ACTIVE);
if (sc->irq_res == NULL) {
printf("cbb: Unable to map IRQ...\n");
goto err;
return (ENOMEM);
}
if (bus_setup_intr(brdev, sc->irq_res, INTR_TYPE_AV, cbb_intr, sc,
&sc->intrhand)) {
device_printf(brdev, "couldn't establish interrupt");
goto err;
}
/* reset 16-bit pcmcia bus */
exca_clrb(&sc->exca, EXCA_INTR, EXCA_INTR_RESET);
/* turn off power */
cbb_power(brdev, CARD_VCC_0V | CARD_VPP_0V);
/* 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));
/* Start the thread */
if (kthread_create(cbb_event_thread, sc, &sc->event_thread, 0,
"%s%d", device_get_name(sc->dev), device_get_unit(sc->dev))) {
device_printf (sc->dev, "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) {
if (sc->flags & CBB_KLUDGE_ALLOC)
bus_generic_release_resource(device_get_parent(brdev),
brdev, SYS_RES_MEMORY, CBBR_SOCKBASE,
sc->base_res);
else
bus_release_resource(brdev, SYS_RES_MEMORY,
CBBR_SOCKBASE, sc->base_res);
}
mtx_destroy(&sc->mtx);
cv_destroy(&sc->cv);
return (ENOMEM);
}
static int
cbb_detach(device_t brdev)
{
struct cbb_softc *sc = device_get_softc(brdev);
int numdevs;
device_t *devlist;
int tmp;
int error;
device_get_children(brdev, &devlist, &numdevs);
error = 0;
for (tmp = 0; tmp < numdevs; tmp++) {
if (device_detach(devlist[tmp]) == 0)
device_delete_child(brdev, devlist[tmp]);
else
error++;
}
free(devlist, M_TEMP);
if (error > 0)
return (ENXIO);
mtx_lock(&sc->mtx);
bus_teardown_intr(brdev, sc->irq_res, sc->intrhand);
sc->flags |= CBB_KTHREAD_DONE;
if (sc->flags & CBB_KTHREAD_RUNNING) {
wakeup(sc);
mtx_unlock(&sc->mtx);
DEVPRINTF((brdev, "waiting for kthread exit..."));
error = tsleep(sc, PWAIT, "cbb-detach-wait", 60 * hz);
if (error)
DPRINTF(("timeout\n"));
else
DPRINTF(("done\n"));
} else {
mtx_unlock(&sc->mtx);
}
bus_release_resource(brdev, SYS_RES_IRQ, 0, sc->irq_res);
bus_release_resource(brdev, SYS_RES_MEMORY, CBBR_SOCKBASE,
sc->base_res);
mtx_destroy(&sc->mtx);
cv_destroy(&sc->cv);
return (0);
}
static int
cbb_shutdown(device_t brdev)
{
struct cbb_softc *sc = (struct cbb_softc *)device_get_softc(brdev);
/* properly reset everything at shutdown */
PCI_MASK_CONFIG(brdev, CBBR_BRIDGECTRL, |CBBM_BRIDGECTRL_RESET, 2);
exca_clrb(&sc->exca, EXCA_INTR, EXCA_INTR_RESET);
cbb_set(sc, CBB_SOCKET_MASK, 0);
cbb_power(brdev, CARD_VCC_0V | CARD_VPP_0V);
exca_write(&sc->exca, 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);
pci_write_config(brdev, PCIR_COMMAND, 0, 2);
return (0);
}
static int
cbb_setup_intr(device_t dev, device_t child, struct resource *irq,
int flags, driver_intr_t *intr, void *arg, void **cookiep)
{
int err;
/*
* You aren't allowed to have fast interrupts for pccard/cardbus
* things since those interrupts are PCI and shared. Since we use
* the PCI interrupt for the status change interrupts, it can't be
* free for use by the driver. Fast interrupts must not be shared.
*/
if ((flags & INTR_FAST) != 0)
return (EINVAL);
err = bus_generic_setup_intr(dev, child, irq, flags, intr, arg,
cookiep);
/*
* XXX need to turn on ISA interrupts, if we ever support them, but
* XXX for now that's all we need to do.
*/
return (err);
}
static int
cbb_teardown_intr(device_t dev, device_t child, struct resource *irq,
void *cookie)
{
/* XXX Need to do different things for ISA interrupts. */
return (bus_generic_teardown_intr(dev, child, irq, cookie));
}
static void
cbb_driver_added(device_t brdev, driver_t *driver)
{
struct cbb_softc *sc = device_get_softc(brdev);
device_t *devlist;
int tmp;
int numdevs;
int wake;
uint32_t sockstate;
DEVICE_IDENTIFY(driver, brdev);
device_get_children(brdev, &devlist, &numdevs);
wake = 0;
sockstate = cbb_get(sc, CBB_SOCKET_STATE);
for (tmp = 0; tmp < numdevs; tmp++) {
if (device_get_state(devlist[tmp]) == DS_NOTPRESENT &&
device_probe_and_attach(devlist[tmp]) == 0) {
if (devlist[tmp] == NULL)
/* NOTHING */;
else if (strcmp(driver->name, "cardbus") == 0) {
sc->cbdev = devlist[tmp];
if (((sockstate & CBB_SOCKET_STAT_CD) == 0) &&
(sockstate & CBB_SOCKET_STAT_CB))
wake++;
} else if (strcmp(driver->name, "pccard") == 0) {
sc->pccarddev = devlist[tmp];
if (((sockstate & CBB_SOCKET_STAT_CD) == 0) &&
(sockstate & CBB_SOCKET_STAT_16BIT))
wake++;
} else
device_printf(brdev,
"Unsupported child bus: %s\n",
driver->name);
}
}
free(devlist, M_TEMP);
if (wake > 0) {
if ((cbb_get(sc, CBB_SOCKET_STATE) & CBB_SOCKET_STAT_CD)
== 0) {
mtx_lock(&sc->mtx);
wakeup(sc);
mtx_unlock(&sc->mtx);
}
}
}
static void
cbb_child_detached(device_t brdev, device_t child)
{
struct cbb_softc *sc = device_get_softc(brdev);
if (child == sc->cbdev)
sc->cbdev = NULL;
else if (child == sc->pccarddev)
sc->pccarddev = NULL;
else
device_printf(brdev, "Unknown child detached: %s %p/%p\n",
device_get_nameunit(child), sc->cbdev, sc->pccarddev);
}
static int
cbb_card_reprobe(device_t brdev, device_t busdev)
{
struct cbb_softc *sc = device_get_softc(brdev);
int wake = 0;
uint32_t sockstate;
sockstate = cbb_get(sc, CBB_SOCKET_STATE);
if ((sockstate & CBB_SOCKET_STAT_CD) == 0) {
if (busdev == sc->cbdev &&
(sockstate & CBB_SOCKET_STAT_CB))
wake++;
else if (busdev == sc->pccarddev &&
(sockstate & CBB_SOCKET_STAT_16BIT))
wake++;
if (wake > 0) {
mtx_lock(&sc->mtx);
wakeup(sc);
mtx_unlock(&sc->mtx);
return (0);
}
return (EBUSY);
}
return (ENOENT);
}
/************************************************************************/
/* Kthreads */
/************************************************************************/
static void
cbb_event_thread(void *arg)
{
struct cbb_softc *sc = arg;
uint32_t status;
int err;
/*
* We take out Giant here because we drop it in tsleep
* and need it for kthread_exit, which drops it.
*/
mtx_lock(&Giant);
sc->flags |= CBB_KTHREAD_RUNNING;
while (1) {
/*
* Check to see if we have anything first so that
* if there's a card already inserted, we do the
* right thing.
*/
if (sc->flags & CBB_KTHREAD_DONE)
break;
status = cbb_get(sc, CBB_SOCKET_STATE);
if ((status & CBB_SOCKET_STAT_CD) == 0)
cbb_insert(sc);
else
cbb_removal(sc);
/*
* Wait until it has been 1s since the last time we
* get an interrupt. We handle the rest of the interrupt
* at the top of the loop.
*/
mtx_lock(&sc->mtx);
cv_wait(&sc->cv, &sc->mtx);
do {
err = cv_timedwait(&sc->cv, &sc->mtx, 1 * hz);
} while (err != EWOULDBLOCK &&
(sc->flags & CBB_KTHREAD_DONE) == 0);
mtx_unlock(&sc->mtx);
}
sc->flags &= ~CBB_KTHREAD_RUNNING;
/*
* XXX I think there's a race here. If we wakeup in the other
* thread before kthread_exit is called and this routine returns,
* and that thread causes us to be unmapped, then we are setting
* ourselves up for a panic. Make sure that I check out
* jhb's crash.c for a fix.
*/
wakeup(sc);
kthread_exit(0);
}
/************************************************************************/
/* Insert/removal */
/************************************************************************/
static void
cbb_insert(struct cbb_softc *sc)
{
uint32_t sockevent, sockstate;
int timeout = 30;
/*
* Debounce interrupt. However, most of the debounce
* is done in the thread's timeout routines.
*/
do {
sockevent = cbb_get(sc, CBB_SOCKET_EVENT);
sockstate = cbb_get(sc, CBB_SOCKET_STATE);
} while (sockstate & CBB_SOCKET_STAT_CD && --timeout > 0);
if (timeout < 0) {
device_printf (sc->dev, "insert timeout");
return;
}
DEVPRINTF((sc->dev, "card inserted: event=0x%08x, state=%08x\n",
sockevent, sockstate));
if (sockstate & CBB_SOCKET_STAT_16BIT) {
if (sc->pccarddev != NULL) {
sc->flags |= CBB_16BIT_CARD;
if (CARD_ATTACH_CARD(sc->pccarddev) != 0)
device_printf(sc->dev,
"PC Card card activation failed\n");
} else {
device_printf(sc->dev,
"PC Card inserted, but no pccard bus.\n");
}
} else if (sockstate & CBB_SOCKET_STAT_CB) {
if (sc->cbdev != NULL) {
sc->flags &= ~CBB_16BIT_CARD;
if (CARD_ATTACH_CARD(sc->cbdev) != 0)
device_printf(sc->dev,
"CardBus card activation failed\n");
} else {
device_printf(sc->dev,
"CardBUS card inserted, but no cardbus bus.\n");
}
} else {
/*
* We should power the card down, and try again a couple of
* times if this happens. XXX
*/
device_printf (sc->dev, "Unsupported card type detected\n");
}
}
static void
cbb_removal(struct cbb_softc *sc)
{
if (sc->flags & CBB_16BIT_CARD && sc->pccarddev != NULL)
CARD_DETACH_CARD(sc->pccarddev, DETACH_FORCE);
else if ((!(sc->flags & CBB_16BIT_CARD)) && sc->cbdev != NULL)
CARD_DETACH_CARD(sc->cbdev, DETACH_FORCE);
cbb_destroy_res(sc);
}
/************************************************************************/
/* Interrupt Handler */
/************************************************************************/
static void
cbb_intr(void *arg)
{
struct cbb_softc *sc = arg;
uint32_t sockevent;
/*
* This ISR needs work XXX
*/
sockevent = cbb_get(sc, CBB_SOCKET_EVENT);
if (sockevent) {
/* ack the interrupt */
cbb_setb(sc, CBB_SOCKET_EVENT, sockevent);
if (sockevent & CBB_SOCKET_EVENT_CD) {
mtx_lock(&sc->mtx);
cv_signal(&sc->cv);
mtx_unlock(&sc->mtx);
}
if (sockevent & CBB_SOCKET_EVENT_CSTS) {
DPRINTF((" cstsevent occured: 0x%08x\n",
cbb_get(sc, CBB_SOCKET_STATE)));
}
if (sockevent & CBB_SOCKET_EVENT_POWER) {
DPRINTF((" pwrevent occured: 0x%08x\n",
cbb_get(sc, CBB_SOCKET_STATE)));
}
/* Other bits? */
}
/* Call the interrupt if we still have the card */
}
/************************************************************************/
/* Generic Power functions */
/************************************************************************/
static int
cbb_detect_voltage(device_t brdev)
{
struct cbb_softc *sc = device_get_softc(brdev);
uint32_t psr;
int vol = CARD_UKN_CARD;
psr = cbb_get(sc, CBB_SOCKET_STATE);
if (psr & CBB_SOCKET_STAT_5VCARD)
vol |= CARD_5V_CARD;
if (psr & CBB_SOCKET_STAT_3VCARD)
vol |= CARD_3V_CARD;
if (psr & CBB_SOCKET_STAT_XVCARD)
vol |= CARD_XV_CARD;
if (psr & CBB_SOCKET_STAT_YVCARD)
vol |= CARD_YV_CARD;
return (vol);
}
static int
cbb_power(device_t brdev, int volts)
{
uint32_t status, sock_ctrl;
struct cbb_softc *sc = device_get_softc(brdev);
int timeout;
uint32_t sockevent;
DEVPRINTF((sc->dev, "cbb_power: %s and %s [%x]\n",
(volts & CARD_VCCMASK) == CARD_VCC_UC ? "CARD_VCC_UC" :
(volts & CARD_VCCMASK) == CARD_VCC_5V ? "CARD_VCC_5V" :
(volts & CARD_VCCMASK) == CARD_VCC_3V ? "CARD_VCC_3V" :
(volts & CARD_VCCMASK) == CARD_VCC_XV ? "CARD_VCC_XV" :
(volts & CARD_VCCMASK) == CARD_VCC_YV ? "CARD_VCC_YV" :
(volts & CARD_VCCMASK) == CARD_VCC_0V ? "CARD_VCC_0V" :
"VCC-UNKNOWN",
(volts & CARD_VPPMASK) == CARD_VPP_UC ? "CARD_VPP_UC" :
(volts & CARD_VPPMASK) == CARD_VPP_12V ? "CARD_VPP_12V" :
(volts & CARD_VPPMASK) == CARD_VPP_VCC ? "CARD_VPP_VCC" :
(volts & CARD_VPPMASK) == CARD_VPP_0V ? "CARD_VPP_0V" :
"VPP-UNKNOWN",
volts));
status = cbb_get(sc, CBB_SOCKET_STATE);
sock_ctrl = cbb_get(sc, CBB_SOCKET_CONTROL);
switch (volts & CARD_VCCMASK) {
case CARD_VCC_UC:
break;
case CARD_VCC_5V:
if (CBB_SOCKET_STAT_5VCARD & status) { /* check 5 V card */
sock_ctrl &= ~CBB_SOCKET_CTRL_VCCMASK;
sock_ctrl |= CBB_SOCKET_CTRL_VCC_5V;
} else {
device_printf(sc->dev,
"BAD voltage request: no 5 V card\n");
}
break;
case CARD_VCC_3V:
if (CBB_SOCKET_STAT_3VCARD & status) {
sock_ctrl &= ~CBB_SOCKET_CTRL_VCCMASK;
sock_ctrl |= CBB_SOCKET_CTRL_VCC_3V;
} else {
device_printf(sc->dev,
"BAD voltage request: no 3.3 V card\n");
}
break;
case CARD_VCC_0V:
sock_ctrl &= ~CBB_SOCKET_CTRL_VCCMASK;
break;
default:
return (0); /* power NEVER changed */
break;
}
switch (volts & CARD_VPPMASK) {
case CARD_VPP_UC:
break;
case CARD_VPP_0V:
sock_ctrl &= ~CBB_SOCKET_CTRL_VPPMASK;
break;
case CARD_VPP_VCC:
sock_ctrl &= ~CBB_SOCKET_CTRL_VPPMASK;
sock_ctrl |= ((sock_ctrl >> 4) & 0x07);
break;
case CARD_VPP_12V:
sock_ctrl &= ~CBB_SOCKET_CTRL_VPPMASK;
sock_ctrl |= CBB_SOCKET_CTRL_VPP_12V;
break;
}
if (cbb_get(sc, CBB_SOCKET_CONTROL) == sock_ctrl)
return (1); /* no change necessary */
cbb_set(sc, CBB_SOCKET_CONTROL, sock_ctrl);
status = cbb_get(sc, CBB_SOCKET_STATE);
/*
* XXX This busy wait is bogus. We should wait for a power
* interrupt and then whine if the status is bad. If we're
* worried about the card not coming up, then we should also
* schedule a timeout which we can cacel in the power interrupt.
*/
timeout = 20;
do {
DELAY(20*1000);
sockevent = cbb_get(sc, CBB_SOCKET_EVENT);
} while (!(sockevent & CBB_SOCKET_EVENT_POWER) && --timeout > 0);
/* reset event status */
/* XXX should only reset EVENT_POWER */
cbb_set(sc, CBB_SOCKET_EVENT, sockevent);
if (timeout < 0) {
printf ("VCC supply failed.\n");
return (0);
}
/* XXX
* delay 400 ms: thgough the standard defines that the Vcc set-up time
* is 20 ms, some PC-Card bridge requires longer duration.
* XXX Note: We should check the stutus AFTER the delay to give time
* for things to stabilize.
*/
DELAY(400*1000);
if (status & CBB_SOCKET_STAT_BADVCC) {
device_printf(sc->dev,
"bad Vcc request. ctrl=0x%x, status=0x%x\n",
sock_ctrl ,status);
printf("cbb_power: %s and %s [%x]\n",
(volts & CARD_VCCMASK) == CARD_VCC_UC ? "CARD_VCC_UC" :
(volts & CARD_VCCMASK) == CARD_VCC_5V ? "CARD_VCC_5V" :
(volts & CARD_VCCMASK) == CARD_VCC_3V ? "CARD_VCC_3V" :
(volts & CARD_VCCMASK) == CARD_VCC_XV ? "CARD_VCC_XV" :
(volts & CARD_VCCMASK) == CARD_VCC_YV ? "CARD_VCC_YV" :
(volts & CARD_VCCMASK) == CARD_VCC_0V ? "CARD_VCC_0V" :
"VCC-UNKNOWN",
(volts & CARD_VPPMASK) == CARD_VPP_UC ? "CARD_VPP_UC" :
(volts & CARD_VPPMASK) == CARD_VPP_12V ? "CARD_VPP_12V":
(volts & CARD_VPPMASK) == CARD_VPP_VCC ? "CARD_VPP_VCC":
(volts & CARD_VPPMASK) == CARD_VPP_0V ? "CARD_VPP_0V" :
"VPP-UNKNOWN",
volts);
return (0);
}
return (1); /* power changed correctly */
}
/*
* detect the voltage for the card, and set it. Since the power
* used is the square of the voltage, lower voltages is a big win
* and what Windows does (and what Microsoft prefers). The MS paper
* also talks about preferring the CIS entry as well.
*/
static int
cbb_do_power(device_t brdev)
{
int voltage;
/* Prefer lowest voltage supported */
voltage = cbb_detect_voltage(brdev);
cbb_power(brdev, CARD_VCC_0V | CARD_VPP_0V);
if (voltage & CARD_YV_CARD)
cbb_power(brdev, CARD_VCC_YV | CARD_VPP_VCC);
else if (voltage & CARD_XV_CARD)
cbb_power(brdev, CARD_VCC_XV | CARD_VPP_VCC);
else if (voltage & CARD_3V_CARD)
cbb_power(brdev, CARD_VCC_3V | CARD_VPP_VCC);
else if (voltage & CARD_5V_CARD)
cbb_power(brdev, CARD_VCC_5V | CARD_VPP_VCC);
else {
device_printf(brdev, "Unknown card voltage\n");
return (ENXIO);
}
return (0);
}
/************************************************************************/
/* Cardbus power functions */
/************************************************************************/
static void
cbb_cardbus_reset(device_t brdev)
{
struct cbb_softc *sc = device_get_softc(brdev);
int delay_us;
delay_us = sc->chipset == CB_RF5C47X ? 400*1000 : 20*1000;
PCI_MASK_CONFIG(brdev, CBBR_BRIDGECTRL, |CBBM_BRIDGECTRL_RESET, 2);
DELAY(delay_us);
/* If a card exists, unreset it! */
if ((cbb_get(sc, CBB_SOCKET_STATE) & CBB_SOCKET_STAT_CD) == 0) {
PCI_MASK_CONFIG(brdev, CBBR_BRIDGECTRL,
&~CBBM_BRIDGECTRL_RESET, 2);
DELAY(delay_us);
}
}
static int
cbb_cardbus_power_enable_socket(device_t brdev, device_t child)
{
struct cbb_softc *sc = device_get_softc(brdev);
int err;
if ((cbb_get(sc, CBB_SOCKET_STATE) & CBB_SOCKET_STAT_CD) ==
CBB_SOCKET_STAT_CD)
return (ENODEV);
err = cbb_do_power(brdev);
if (err)
return (err);
cbb_cardbus_reset(brdev);
return (0);
}
static void
cbb_cardbus_power_disable_socket(device_t brdev, device_t child)
{
cbb_power(brdev, CARD_VCC_0V | CARD_VPP_0V);
cbb_cardbus_reset(brdev);
}
/************************************************************************/
/* Cardbus Resource */
/************************************************************************/
static int
cbb_cardbus_io_open(device_t brdev, int win, uint32_t start, uint32_t end)
{
int basereg;
int limitreg;
if ((win < 0) || (win > 1)) {
DEVPRINTF((brdev,
"cbb_cardbus_io_open: window out of range %d\n", win));
return (EINVAL);
}
basereg = win * 8 + CBBR_IOBASE0;
limitreg = win * 8 + CBBR_IOLIMIT0;
pci_write_config(brdev, basereg, start, 4);
pci_write_config(brdev, limitreg, end, 4);
return (0);
}
static int
cbb_cardbus_mem_open(device_t brdev, int win, uint32_t start, uint32_t end)
{
int basereg;
int limitreg;
if ((win < 0) || (win > 1)) {
DEVPRINTF((brdev,
"cbb_cardbus_mem_open: window out of range %d\n", win));
return (EINVAL);
}
basereg = win*8 + CBBR_MEMBASE0;
limitreg = win*8 + CBBR_MEMLIMIT0;
pci_write_config(brdev, basereg, start, 4);
pci_write_config(brdev, limitreg, end, 4);
return (0);
}
/*
* XXX The following function belongs in the pci bus layer.
*/
static void
cbb_cardbus_auto_open(struct cbb_softc *sc, int type)
{
uint32_t starts[2];
uint32_t ends[2];
struct cbb_reslist *rle;
int align;
int prefetchable[2];
uint32_t reg;
starts[0] = starts[1] = 0xffffffff;
ends[0] = ends[1] = 0;
if (type == SYS_RES_MEMORY)
align = CBB_MEMALIGN;
else if (type == SYS_RES_IOPORT)
align = CBB_IOALIGN;
else
align = 1;
SLIST_FOREACH(rle, &sc->rl, link) {
if (rle->type != type)
;
else if (rle->res == NULL) {
device_printf(sc->dev, "WARNING: Resource not reserved? "
"(type=%d, addr=%lx)\n",
rle->type, rman_get_start(rle->res));
} else if (!(rman_get_flags(rle->res) & RF_ACTIVE)) {
/* XXX */
} else if (starts[0] == 0xffffffff) {
starts[0] = rman_get_start(rle->res);
ends[0] = rman_get_end(rle->res);
prefetchable[0] =
rman_get_flags(rle->res) & RF_PREFETCHABLE;
} else if (rman_get_end(rle->res) > ends[0] &&
rman_get_start(rle->res) - ends[0] <
CBB_AUTO_OPEN_SMALLHOLE && prefetchable[0] ==
(rman_get_flags(rle->res) & RF_PREFETCHABLE)) {
ends[0] = rman_get_end(rle->res);
} else if (rman_get_start(rle->res) < starts[0] &&
starts[0] - rman_get_end(rle->res) <
CBB_AUTO_OPEN_SMALLHOLE && prefetchable[0] ==
(rman_get_flags(rle->res) & RF_PREFETCHABLE)) {
starts[0] = rman_get_start(rle->res);
} else if (starts[1] == 0xffffffff) {
starts[1] = rman_get_start(rle->res);
ends[1] = rman_get_end(rle->res);
prefetchable[1] =
rman_get_flags(rle->res) & RF_PREFETCHABLE;
} else if (rman_get_end(rle->res) > ends[1] &&
rman_get_start(rle->res) - ends[1] <
CBB_AUTO_OPEN_SMALLHOLE && prefetchable[1] ==
(rman_get_flags(rle->res) & RF_PREFETCHABLE)) {
ends[1] = rman_get_end(rle->res);
} else if (rman_get_start(rle->res) < starts[1] &&
starts[1] - rman_get_end(rle->res) <
CBB_AUTO_OPEN_SMALLHOLE && prefetchable[1] ==
(rman_get_flags(rle->res) & RF_PREFETCHABLE)) {
starts[1] = rman_get_start(rle->res);
} else {
uint32_t diffs[2];
int win;
diffs[0] = diffs[1] = 0xffffffff;
if (rman_get_start(rle->res) > ends[0])
diffs[0] = rman_get_start(rle->res) - ends[0];
else if (rman_get_end(rle->res) < starts[0])
diffs[0] = starts[0] - rman_get_end(rle->res);
if (rman_get_start(rle->res) > ends[1])
diffs[1] = rman_get_start(rle->res) - ends[1];
else if (rman_get_end(rle->res) < starts[1])
diffs[1] = starts[1] - rman_get_end(rle->res);
win = (diffs[0] <= diffs[1])?0:1;
if (rman_get_start(rle->res) > ends[win])
ends[win] = rman_get_end(rle->res);
else if (rman_get_end(rle->res) < starts[win])
starts[win] = rman_get_start(rle->res);
if (!(rman_get_flags(rle->res) & RF_PREFETCHABLE))
prefetchable[win] = 0;
}
if (starts[0] != 0xffffffff)
starts[0] -= starts[0] % align;
if (starts[1] != 0xffffffff)
starts[1] -= starts[1] % align;
if (ends[0] % align != 0)
ends[0] += align - ends[0]%align - 1;
if (ends[1] % align != 0)
ends[1] += align - ends[1]%align - 1;
}
if (type == SYS_RES_MEMORY) {
cbb_cardbus_mem_open(sc->dev, 0, starts[0], ends[0]);
cbb_cardbus_mem_open(sc->dev, 1, starts[1], ends[1]);
reg = pci_read_config(sc->dev, CBBR_BRIDGECTRL, 2);
reg &= ~(CBBM_BRIDGECTRL_PREFETCH_0|
CBBM_BRIDGECTRL_PREFETCH_1);
reg |= (prefetchable[0]?CBBM_BRIDGECTRL_PREFETCH_0:0)|
(prefetchable[1]?CBBM_BRIDGECTRL_PREFETCH_1:0);
pci_write_config(sc->dev, CBBR_BRIDGECTRL, reg, 2);
} else if (type == SYS_RES_IOPORT) {
cbb_cardbus_io_open(sc->dev, 0, starts[0], ends[0]);
cbb_cardbus_io_open(sc->dev, 1, starts[1], ends[1]);
}
}
static int
cbb_cardbus_activate_resource(device_t brdev, device_t child, int type,
int rid, struct resource *res)
{
int ret;
ret = BUS_ACTIVATE_RESOURCE(device_get_parent(brdev), child,
type, rid, res);
if (ret != 0)
return (ret);
cbb_cardbus_auto_open(device_get_softc(brdev), type);
return (0);
}
static int
cbb_cardbus_deactivate_resource(device_t brdev, device_t child, int type,
int rid, struct resource *res)
{
int ret;
ret = BUS_DEACTIVATE_RESOURCE(device_get_parent(brdev), child,
type, rid, res);
if (ret != 0)
return (ret);
cbb_cardbus_auto_open(device_get_softc(brdev), type);
return (0);
}
static struct resource *
cbb_cardbus_alloc_resource(device_t brdev, device_t child, int type,
int *rid, u_long start, u_long end, u_long count, uint flags)
{
struct cbb_softc *sc = device_get_softc(brdev);
int tmp;
struct resource *res;
switch (type) {
case SYS_RES_IRQ:
tmp = rman_get_start(sc->irq_res);
if (start > tmp || end < tmp || count != 1) {
device_printf(child, "requested interrupt %ld-%ld,"
"count = %ld not supported by cbb\n",
start, end, count);
return (NULL);
}
start = end = tmp;
break;
case SYS_RES_IOPORT:
if (start <= cbb_start_32_io)
start = cbb_start_32_io;
if (end < start)
end = start;
break;
case SYS_RES_MEMORY:
if (start <= cbb_start_mem)
start = cbb_start_mem;
if (end < start)
end = start;
break;
}
res = BUS_ALLOC_RESOURCE(device_get_parent(brdev), child, type, rid,
start, end, count, flags & ~RF_ACTIVE);
if (res == NULL) {
printf("cbb alloc res fail\n");
return (NULL);
}
cbb_insert_res(sc, res, type, *rid);
if (flags & RF_ACTIVE)
if (bus_activate_resource(child, type, *rid, res) != 0) {
bus_release_resource(child, type, *rid, res);
return (NULL);
}
return (res);
}
static int
cbb_cardbus_release_resource(device_t brdev, device_t child, int type,
int rid, struct resource *res)
{
struct cbb_softc *sc = device_get_softc(brdev);
int error;
if (rman_get_flags(res) & RF_ACTIVE) {
error = bus_deactivate_resource(child, type, rid, res);
if (error != 0)
return (error);
}
cbb_remove_res(sc, res);
return (BUS_RELEASE_RESOURCE(device_get_parent(brdev), child,
type, rid, res));
}
/************************************************************************/
/* PC Card Power Functions */
/************************************************************************/
static int
cbb_pcic_power_enable_socket(device_t brdev, device_t child)
{
struct cbb_softc *sc = device_get_softc(brdev);
int err;
DPRINTF(("cbb_pcic_socket_enable:\n"));
/* power down/up the socket to reset */
err = cbb_do_power(brdev);
if (err)
return (err);
exca_reset(&sc->exca, child);
return (0);
}
static void
cbb_pcic_power_disable_socket(device_t brdev, device_t child)
{
struct cbb_softc *sc = device_get_softc(brdev);
DPRINTF(("cbb_pcic_socket_disable\n"));
/* reset signal asserting... */
exca_clrb(&sc->exca, EXCA_INTR, EXCA_INTR_RESET);
DELAY(2*1000);
/* power down the socket */
cbb_power(brdev, CARD_VCC_0V | CARD_VPP_0V);
exca_clrb(&sc->exca, EXCA_PWRCTL, EXCA_PWRCTL_OE);
/* wait 300ms until power fails (Tpf). */
DELAY(300 * 1000);
}
/************************************************************************/
/* POWER methods */
/************************************************************************/
static int
cbb_power_enable_socket(device_t brdev, device_t child)
{
struct cbb_softc *sc = device_get_softc(brdev);
if (sc->flags & CBB_16BIT_CARD)
return (cbb_pcic_power_enable_socket(brdev, child));
else
return (cbb_cardbus_power_enable_socket(brdev, child));
}
static void
cbb_power_disable_socket(device_t brdev, device_t child)
{
struct cbb_softc *sc = device_get_softc(brdev);
if (sc->flags & CBB_16BIT_CARD)
cbb_pcic_power_disable_socket(brdev, child);
else
cbb_cardbus_power_disable_socket(brdev, child);
}
static int
cbb_pcic_activate_resource(device_t brdev, device_t child, int type, int rid,
struct resource *res)
{
int err;
struct cbb_softc *sc = device_get_softc(brdev);
if (!(rman_get_flags(res) & RF_ACTIVE)) { /* not already activated */
switch (type) {
case SYS_RES_IOPORT:
err = exca_io_map(&sc->exca, 0, res);
break;
case SYS_RES_MEMORY:
err = exca_mem_map(&sc->exca, 0, res);
break;
default:
err = 0;
break;
}
if (err)
return (err);
}
return (BUS_ACTIVATE_RESOURCE(device_get_parent(brdev), child,
type, rid, res));
}
static int
cbb_pcic_deactivate_resource(device_t brdev, device_t child, int type,
int rid, struct resource *res)
{
struct cbb_softc *sc = device_get_softc(brdev);
if (rman_get_flags(res) & RF_ACTIVE) { /* if activated */
switch (type) {
case SYS_RES_IOPORT:
if (exca_io_unmap_res(&sc->exca, res))
return (ENOENT);
break;
case SYS_RES_MEMORY:
if (exca_mem_unmap_res(&sc->exca, res))
return (ENOENT);
break;
}
}
return (BUS_DEACTIVATE_RESOURCE(device_get_parent(brdev), child,
type, rid, res));
}
static struct resource *
cbb_pcic_alloc_resource(device_t brdev, device_t child, int type, int *rid,
u_long start, u_long end, u_long count, uint flags)
{
struct resource *res = NULL;
struct cbb_softc *sc = device_get_softc(brdev);
int tmp;
switch (type) {
case SYS_RES_MEMORY:
if (start < cbb_start_mem)
start = cbb_start_mem;
if (end < start)
end = start;
flags = (flags & ~RF_ALIGNMENT_MASK) |
rman_make_alignment_flags(CBB_MEMALIGN);
break;
case SYS_RES_IOPORT:
if (start < cbb_start_16_io)
start = cbb_start_16_io;
if (end < start)
end = start;
break;
case SYS_RES_IRQ:
tmp = rman_get_start(sc->irq_res);
if (start > tmp || end < tmp || count != 1) {
device_printf(child, "requested interrupt %ld-%ld,"
"count = %ld not supported by cbb\n",
start, end, count);
return (NULL);
}
flags |= RF_SHAREABLE;
start = end = rman_get_start(sc->irq_res);
break;
}
res = BUS_ALLOC_RESOURCE(device_get_parent(brdev), child, type, rid,
start, end, count, flags & ~RF_ACTIVE);
if (res == NULL)
return (NULL);
cbb_insert_res(sc, res, type, *rid);
if (flags & RF_ACTIVE) {
if (bus_activate_resource(child, type, *rid, res) != 0) {
bus_release_resource(child, type, *rid, res);
return (NULL);
}
}
return (res);
}
static int
cbb_pcic_release_resource(device_t brdev, device_t child, int type,
int rid, struct resource *res)
{
struct cbb_softc *sc = device_get_softc(brdev);
int error;
if (rman_get_flags(res) & RF_ACTIVE) {
error = bus_deactivate_resource(child, type, rid, res);
if (error != 0)
return (error);
}
cbb_remove_res(sc, res);
return (BUS_RELEASE_RESOURCE(device_get_parent(brdev), child,
type, rid, res));
}
/************************************************************************/
/* PC Card methods */
/************************************************************************/
static int
cbb_pcic_set_res_flags(device_t brdev, device_t child, int type, int rid,
uint32_t flags)
{
struct cbb_softc *sc = device_get_softc(brdev);
struct resource *res;
if (type != SYS_RES_MEMORY)
return (EINVAL);
res = cbb_find_res(sc, type, rid);
if (res == NULL) {
device_printf(brdev,
"set_res_flags: specified rid not found\n");
return (ENOENT);
}
return (exca_mem_set_flags(&sc->exca, res, flags));
}
static int
cbb_pcic_set_memory_offset(device_t brdev, device_t child, int rid,
uint32_t cardaddr, uint32_t *deltap)
{
struct cbb_softc *sc = device_get_softc(brdev);
struct resource *res;
res = cbb_find_res(sc, SYS_RES_MEMORY, rid);
if (res == NULL) {
device_printf(brdev,
"set_memory_offset: specified rid not found\n");
return (ENOENT);
}
return (exca_mem_set_offset(&sc->exca, res, cardaddr, deltap));
}
/************************************************************************/
/* BUS Methods */
/************************************************************************/
static int
cbb_activate_resource(device_t brdev, device_t child, int type, int rid,
struct resource *r)
{
struct cbb_softc *sc = device_get_softc(brdev);
if (sc->flags & CBB_16BIT_CARD)
return (cbb_pcic_activate_resource(brdev, child, type, rid, r));
else
return (cbb_cardbus_activate_resource(brdev, child, type, rid,
r));
}
static int
cbb_deactivate_resource(device_t brdev, device_t child, int type,
int rid, struct resource *r)
{
struct cbb_softc *sc = device_get_softc(brdev);
if (sc->flags & CBB_16BIT_CARD)
return (cbb_pcic_deactivate_resource(brdev, child, type,
rid, r));
else
return (cbb_cardbus_deactivate_resource(brdev, child, type,
rid, r));
}
static struct resource *
cbb_alloc_resource(device_t brdev, device_t child, int type, int *rid,
u_long start, u_long end, u_long count, uint flags)
{
struct cbb_softc *sc = device_get_softc(brdev);
if (sc->flags & CBB_16BIT_CARD)
return (cbb_pcic_alloc_resource(brdev, child, type, rid,
start, end, count, flags));
else
return (cbb_cardbus_alloc_resource(brdev, child, type, rid,
start, end, count, flags));
}
static int
cbb_release_resource(device_t brdev, device_t child, int type, int rid,
struct resource *r)
{
struct cbb_softc *sc = device_get_softc(brdev);
if (sc->flags & CBB_16BIT_CARD)
return (cbb_pcic_release_resource(brdev, child, type,
rid, r));
else
return (cbb_cardbus_release_resource(brdev, child, type,
rid, r));
}
static int
cbb_read_ivar(device_t brdev, device_t child, int which, uintptr_t *result)
{
struct cbb_softc *sc = device_get_softc(brdev);
switch (which) {
case PCIB_IVAR_BUS:
*result = sc->secbus;
return (0);
}
return (ENOENT);
}
static int
cbb_write_ivar(device_t brdev, device_t child, int which, uintptr_t value)
{
struct cbb_softc *sc = device_get_softc(brdev);
switch (which) {
case PCIB_IVAR_BUS:
sc->secbus = value;
break;
}
return (ENOENT);
}
/************************************************************************/
/* 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)
{
/*
* 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, 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 int
cbb_suspend(device_t self)
{
int error = 0;
struct cbb_softc* sc = device_get_softc(self);
bus_teardown_intr(self, sc->irq_res, sc->intrhand);
error = bus_generic_suspend(self);
return (error);
}
static int
cbb_resume(device_t self)
{
int error = 0;
struct cbb_softc *sc = (struct cbb_softc *)device_get_softc(self);
uint32_t tmp;
pci_write_config(self, CBBR_SOCKBASE, rman_get_start(sc->base_res), 4);
DEVPRINTF((self, "PCI Memory allocated: %08lx\n",
rman_get_start(sc->base_res)));
cbb_chipinit(sc);
/* re-establish the interrupt. */
if (bus_setup_intr(self, sc->irq_res, INTR_TYPE_AV, cbb_intr, sc,
&sc->intrhand)) {
device_printf(self, "couldn't re-establish interrupt");
bus_release_resource(self, SYS_RES_IRQ, 0, sc->irq_res);
bus_release_resource(self, SYS_RES_MEMORY, CBBR_SOCKBASE,
sc->base_res);
sc->irq_res = NULL;
sc->base_res = NULL;
return (ENOMEM);
}
/* CSC Interrupt: Card detect interrupt on */
cbb_setb(sc, CBB_SOCKET_MASK, CBB_SOCKET_MASK_CD);
/* reset interrupt */
tmp = cbb_get(sc, CBB_SOCKET_EVENT);
cbb_set(sc, CBB_SOCKET_EVENT, tmp);
/*
* Some BIOSes will not save the BARs for the pci chips, so we
* must do it ourselves. If the BAR is reset to 0 for an I/O
* device, it will read back as 0x1, so no explicit test for
* memory devices are needed.
*
* Note: The PCI bus code should do this automatically for us on
* suspend/resume, but until it does, we have to cope.
*/
if (pci_read_config(self, CBBR_SOCKBASE, 4) == 0)
pci_write_config(self, CBBR_SOCKBASE,
rman_get_start(sc->base_res), 4);
error = bus_generic_resume(self);
return (error);
}
static device_method_t cbb_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, cbb_probe),
DEVMETHOD(device_attach, cbb_attach),
DEVMETHOD(device_detach, cbb_detach),
DEVMETHOD(device_shutdown, cbb_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),
/* 16-bit card interface */
DEVMETHOD(card_set_res_flags, cbb_pcic_set_res_flags),
DEVMETHOD(card_set_memory_offset, cbb_pcic_set_memory_offset),
DEVMETHOD(card_reprobe_card, cbb_card_reprobe),
/* 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),
{0,0}
};
static driver_t cbb_driver = {
"cbb",
cbb_methods,
sizeof(struct cbb_softc)
};
static devclass_t cbb_devclass;
DRIVER_MODULE(cbb, pci, cbb_driver, cbb_devclass, 0, 0);
MODULE_VERSION(cbb, 1);
MODULE_DEPEND(cbb, exca, 1, 1, 1);
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