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freebsd/sys/dev/cardbus/cardbus.c

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/*
* 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.
*
* $FreeBSD$
*/
/*
* Cardbus Bus Driver
*
* much of the bus code was stolen directly from sys/pci/pci.c
* (Copyright (c) 1997, Stefan Esser <se@freebsd.org>)
*
* Written by Jonathan Chen <jon@freebsd.org>
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/sysctl.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <machine/resource.h>
#include <sys/pciio.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/cardbus/cardbusreg.h>
#include <dev/cardbus/cardbusvar.h>
#include <dev/cardbus/cardbus_cis.h>
#include <dev/pccard/pccardvar.h>
#include "power_if.h"
#include "pcib_if.h"
/* sysctl vars */
SYSCTL_NODE(_hw, OID_AUTO, cardbus, CTLFLAG_RD, 0, "CardBus parameters");
int cardbus_debug = 0;
TUNABLE_INT("hw.cardbus.debug", &cardbus_debug);
SYSCTL_INT(_hw_cardbus, OID_AUTO, debug, CTLFLAG_RW,
&cardbus_debug, 0,
"CardBus debug");
int cardbus_cis_debug = 0;
TUNABLE_INT("hw.cardbus.cis_debug", &cardbus_cis_debug);
SYSCTL_INT(_hw_cardbus, OID_AUTO, cis_debug, CTLFLAG_RW,
&cardbus_cis_debug, 0,
"CardBus CIS debug");
#define DPRINTF(a) if (cardbus_debug) printf a
#define DEVPRINTF(x) if (cardbus_debug) device_printf x
static int cardbus_probe(device_t cbdev);
static int cardbus_attach(device_t cbdev);
static int cardbus_detach(device_t cbdev);
static void device_setup_regs(device_t brdev, int b, int s, int f,
pcicfgregs *cfg);
static int cardbus_attach_card(device_t cbdev);
static int cardbus_detach_card(device_t cbdev, int flags);
static void cardbus_driver_added(device_t cbdev, driver_t *driver);
static void cardbus_read_extcap(device_t cbdev, pcicfgregs *cfg);
static void cardbus_hdrtypedata(device_t brdev, int b, int s, int f,
pcicfgregs *cfg);
static struct cardbus_devinfo *cardbus_read_device(device_t brdev, int b,
int s, int f);
static int cardbus_freecfg(struct cardbus_devinfo *dinfo);
static void cardbus_print_verbose(struct cardbus_devinfo *dinfo);
static int cardbus_set_resource(device_t cbdev, device_t child, int type,
int rid, u_long start, u_long count, struct resource *res);
static int cardbus_get_resource(device_t cbdev, device_t child, int type,
int rid, u_long *startp, u_long *countp);
static void cardbus_delete_resource(device_t cbdev, device_t child,
int type, int rid);
static int cardbus_set_resource_method(device_t cbdev, device_t child,
int type, int rid, u_long start, u_long count);
static int cardbus_get_resource_method(device_t cbdev, device_t child,
int type, int rid, u_long *startp, u_long *countp);
static void cardbus_delete_resource_method(device_t cbdev, device_t child,
int type, int rid);
static void cardbus_release_all_resources(device_t cbdev,
struct cardbus_devinfo *dinfo);
static struct resource *cardbus_alloc_resource(device_t cbdev, device_t child,
int type, int *rid, u_long start, u_long end, u_long count,
u_int flags);
static int cardbus_release_resource(device_t cbdev, device_t child,
int type, int rid, struct resource *r);
static int cardbus_setup_intr(device_t cbdev, device_t child,
struct resource *irq, int flags, driver_intr_t *intr,
void *arg, void **cookiep);
static int cardbus_teardown_intr(device_t cbdev, device_t child,
struct resource *irq, void *cookie);
static int cardbus_print_resources(struct resource_list *rl,
const char *name, int type, const char *format);
static int cardbus_print_child(device_t cbdev, device_t child);
static void cardbus_probe_nomatch(device_t cbdev, device_t child);
static int cardbus_read_ivar(device_t cbdev, device_t child, int which,
u_long *result);
static int cardbus_write_ivar(device_t cbdev, device_t child, int which,
uintptr_t value);
static int cardbus_set_powerstate_method(device_t cbdev, device_t child,
int state);
static int cardbus_get_powerstate_method(device_t cbdev, device_t child);
static u_int32_t cardbus_read_config_method(device_t cbdev,
device_t child, int reg, int width);
static void cardbus_write_config_method(device_t cbdev, device_t child,
int reg, u_int32_t val, int width);
static __inline void cardbus_set_command_bit(device_t cbdev, device_t child,
u_int16_t bit);
static __inline void cardbus_clear_command_bit(device_t cbdev, device_t child,
u_int16_t bit);
static void cardbus_enable_busmaster_method(device_t cbdev, device_t child);
static void cardbus_disable_busmaster_method(device_t cbdev, device_t child);
static void cardbus_enable_io_method(device_t cbdev, device_t child,
int space);
static void cardbus_disable_io_method(device_t cbdev, device_t child,
int space);
/************************************************************************/
/* Probe/Attach */
/************************************************************************/
static int
cardbus_probe(device_t cbdev)
{
device_set_desc(cbdev, "CardBus bus");
return 0;
}
static int
cardbus_attach(device_t cbdev)
{
return 0;
}
static int
cardbus_detach(device_t cbdev)
{
cardbus_detach_card(cbdev, DETACH_FORCE);
return 0;
}
static int
cardbus_suspend(device_t self)
{
cardbus_detach_card(self, DETACH_FORCE);
return (0);
}
static int
cardbus_resume(device_t self)
{
return (0);
}
/************************************************************************/
/* Attach/Detach card */
/************************************************************************/
static void
device_setup_regs(device_t brdev, int b, int s, int f, pcicfgregs *cfg)
{
PCIB_WRITE_CONFIG(brdev, b, s, f, PCIR_INTLINE,
pci_get_irq(device_get_parent(brdev)), 1);
cfg->intline = PCIB_READ_CONFIG(brdev, b, s, f, PCIR_INTLINE, 1);
PCIB_WRITE_CONFIG(brdev, b, s, f, PCIR_CACHELNSZ, 0x08, 1);
cfg->cachelnsz = PCIB_READ_CONFIG(brdev, b, s, f, PCIR_CACHELNSZ, 1);
PCIB_WRITE_CONFIG(brdev, b, s, f, PCIR_LATTIMER, 0xa8, 1);
cfg->lattimer = PCIB_READ_CONFIG(brdev, b, s, f, PCIR_LATTIMER, 1);
PCIB_WRITE_CONFIG(brdev, b, s, f, PCIR_MINGNT, 0x14, 1);
cfg->mingnt = PCIB_READ_CONFIG(brdev, b, s, f, PCIR_MINGNT, 1);
PCIB_WRITE_CONFIG(brdev, b, s, f, PCIR_MAXLAT, 0x14, 1);
cfg->maxlat = PCIB_READ_CONFIG(brdev, b, s, f, PCIR_MAXLAT, 1);
}
#define DETACH_NOWARN 0x800
static int
cardbus_attach_card(device_t cbdev)
{
device_t brdev = device_get_parent(cbdev);
int cardattached = 0;
static int curr_bus_number = 2; /* XXX EVILE BAD (see below) */
int bus, slot, func;
cardbus_detach_card(cbdev, DETACH_NOWARN); /* detach existing cards */
POWER_ENABLE_SOCKET(brdev, cbdev);
bus = pcib_get_bus(cbdev);
if (bus == 0) {
/*
* XXX EVILE BAD XXX
* Not all BIOSes initialize the secondary bus number properly,
* so if the default is bad, we just put one in and hope it
* works.
*/
bus = curr_bus_number;
pci_write_config(brdev, PCIR_SECBUS_2, curr_bus_number, 1);
pci_write_config(brdev, PCIR_SUBBUS_2, curr_bus_number + 2, 1);
curr_bus_number += 3;
}
/* For each function, set it up and try to attach a driver to it */
for (slot = 0; slot <= CARDBUS_SLOTMAX; slot++) {
int cardbusfunchigh = 0;
for (func = 0; func <= cardbusfunchigh; func++) {
struct cardbus_devinfo *dinfo =
cardbus_read_device(brdev, bus, slot, func);
if (dinfo == NULL)
continue;
if (dinfo->pci.cfg.mfdev)
cardbusfunchigh = CARDBUS_FUNCMAX;
device_setup_regs(brdev, bus, slot, func, &dinfo->pci.cfg);
cardbus_print_verbose(dinfo);
dinfo->pci.cfg.dev = device_add_child(cbdev, NULL, -1);
if (!dinfo->pci.cfg.dev) {
DEVPRINTF((cbdev, "Cannot add child!\n"));
cardbus_freecfg(dinfo);
continue;
}
resource_list_init(&dinfo->pci.resources);
device_set_ivars(dinfo->pci.cfg.dev, dinfo);
cardbus_do_cis(cbdev, dinfo->pci.cfg.dev);
if (device_probe_and_attach(dinfo->pci.cfg.dev) != 0) {
/* when fail, release all resources */
cardbus_release_all_resources(cbdev, dinfo);
} else
cardattached++;
}
}
if (cardattached > 0)
return 0;
POWER_DISABLE_SOCKET(brdev, cbdev);
return ENOENT;
}
static int
cardbus_detach_card(device_t cbdev, int flags)
{
int numdevs;
device_t *devlist;
int tmp;
int err = 0;
device_get_children(cbdev, &devlist, &numdevs);
if (numdevs == 0) {
if (!(flags & DETACH_NOWARN)) {
DEVPRINTF((cbdev, "detach_card: no card to detach!\n"));
POWER_DISABLE_SOCKET(device_get_parent(cbdev), cbdev);
}
free(devlist, M_TEMP);
return ENOENT;
}
for (tmp = 0; tmp < numdevs; tmp++) {
struct cardbus_devinfo *dinfo = device_get_ivars(devlist[tmp]);
int status = device_get_state(devlist[tmp]);
if (status == DS_ATTACHED || status == DS_BUSY) {
if (device_detach(dinfo->pci.cfg.dev) == 0 ||
flags & DETACH_FORCE) {
cardbus_release_all_resources(cbdev, dinfo);
device_delete_child(cbdev, devlist[tmp]);
} else {
err++;
}
cardbus_freecfg(dinfo);
} else {
cardbus_release_all_resources(cbdev, dinfo);
device_delete_child(cbdev, devlist[tmp]);
cardbus_freecfg(dinfo);
}
}
if (err == 0)
POWER_DISABLE_SOCKET(device_get_parent(cbdev), cbdev);
free(devlist, M_TEMP);
return err;
}
static void
cardbus_driver_added(device_t cbdev, driver_t *driver)
{
/* XXX check if 16-bit or cardbus! */
int numdevs;
device_t *devlist;
int tmp;
device_get_children(cbdev, &devlist, &numdevs);
DEVICE_IDENTIFY(driver, cbdev);
for (tmp = 0; tmp < numdevs; tmp++) {
if (device_get_state(devlist[tmp]) == DS_NOTPRESENT) {
struct cardbus_devinfo *dinfo;
dinfo = device_get_ivars(devlist[tmp]);
cardbus_release_all_resources(cbdev, dinfo);
resource_list_init(&dinfo->pci.resources);
cardbus_do_cis(cbdev, dinfo->pci.cfg.dev);
if (device_probe_and_attach(dinfo->pci.cfg.dev) != 0) {
cardbus_release_all_resources(cbdev, dinfo);
}
}
}
free(devlist, M_TEMP);
}
/************************************************************************/
/* PCI-Like config reading (copied from pci.c */
/************************************************************************/
/* read configuration header into pcicfgrect structure */
static void
cardbus_read_extcap(device_t cbdev, pcicfgregs *cfg)
{
#define REG(n, w) PCIB_READ_CONFIG(cbdev, cfg->bus, cfg->slot, cfg->func, n, w)
int ptr, nextptr, ptrptr;
switch (cfg->hdrtype) {
case 0:
ptrptr = 0x34;
break;
case 2:
ptrptr = 0x14;
break;
default:
return; /* no extended capabilities support */
}
nextptr = REG(ptrptr, 1); /* sanity check? */
/*
* Read capability entries.
*/
while (nextptr != 0) {
/* Sanity check */
if (nextptr > 255) {
printf("illegal PCI extended capability offset %d\n",
nextptr);
return;
}
/* Find the next entry */
ptr = nextptr;
nextptr = REG(ptr + 1, 1);
/* Process this entry */
switch (REG(ptr, 1)) {
case 0x01: /* PCI power management */
if (cfg->pp_cap == 0) {
cfg->pp_cap = REG(ptr + PCIR_POWER_CAP, 2);
cfg->pp_status = ptr + PCIR_POWER_STATUS;
cfg->pp_pmcsr = ptr + PCIR_POWER_PMCSR;
if ((nextptr - ptr) > PCIR_POWER_DATA)
cfg->pp_data = ptr + PCIR_POWER_DATA;
}
break;
default:
break;
}
}
#undef REG
}
/* extract header type specific config data */
static void
cardbus_hdrtypedata(device_t brdev, int b, int s, int f, pcicfgregs *cfg)
{
#define REG(n, w) PCIB_READ_CONFIG(brdev, b, s, f, n, w)
switch (cfg->hdrtype) {
case 0:
cfg->subvendor = REG(PCIR_SUBVEND_0, 2);
cfg->subdevice = REG(PCIR_SUBDEV_0, 2);
cfg->nummaps = PCI_MAXMAPS_0;
break;
case 1:
cfg->subvendor = REG(PCIR_SUBVEND_1, 2);
cfg->subdevice = REG(PCIR_SUBDEV_1, 2);
cfg->nummaps = PCI_MAXMAPS_1;
break;
case 2:
cfg->subvendor = REG(PCIR_SUBVEND_2, 2);
cfg->subdevice = REG(PCIR_SUBDEV_2, 2);
cfg->nummaps = PCI_MAXMAPS_2;
break;
}
#undef REG
}
static struct cardbus_devinfo *
cardbus_read_device(device_t brdev, int b, int s, int f)
{
#define REG(n, w) PCIB_READ_CONFIG(brdev, b, s, f, n, w)
pcicfgregs *cfg = NULL;
struct cardbus_devinfo *devlist_entry = NULL;
if (REG(PCIR_DEVVENDOR, 4) != -1) {
devlist_entry = malloc(sizeof(struct cardbus_devinfo),
M_DEVBUF, M_WAITOK | M_ZERO);
if (devlist_entry == NULL)
return (NULL);
cfg = &devlist_entry->pci.cfg;
cfg->bus = b;
cfg->slot = s;
cfg->func = f;
cfg->vendor = REG(PCIR_VENDOR, 2);
cfg->device = REG(PCIR_DEVICE, 2);
cfg->cmdreg = REG(PCIR_COMMAND, 2);
cfg->statreg = REG(PCIR_STATUS, 2);
cfg->baseclass = REG(PCIR_CLASS, 1);
cfg->subclass = REG(PCIR_SUBCLASS, 1);
cfg->progif = REG(PCIR_PROGIF, 1);
cfg->revid = REG(PCIR_REVID, 1);
cfg->hdrtype = REG(PCIR_HEADERTYPE, 1);
cfg->cachelnsz = REG(PCIR_CACHELNSZ, 1);
cfg->lattimer = REG(PCIR_LATTIMER, 1);
cfg->intpin = REG(PCIR_INTPIN, 1);
cfg->intline = REG(PCIR_INTLINE, 1);
cfg->mingnt = REG(PCIR_MINGNT, 1);
cfg->maxlat = REG(PCIR_MAXLAT, 1);
cfg->mfdev = (cfg->hdrtype & PCIM_MFDEV) != 0;
cfg->hdrtype &= ~PCIM_MFDEV;
cardbus_hdrtypedata(brdev, b, s, f, cfg);
if (REG(PCIR_STATUS, 2) & PCIM_STATUS_CAPPRESENT)
cardbus_read_extcap(brdev, cfg);
devlist_entry->pci.conf.pc_sel.pc_bus = cfg->bus;
devlist_entry->pci.conf.pc_sel.pc_dev = cfg->slot;
devlist_entry->pci.conf.pc_sel.pc_func = cfg->func;
devlist_entry->pci.conf.pc_hdr = cfg->hdrtype;
devlist_entry->pci.conf.pc_subvendor = cfg->subvendor;
devlist_entry->pci.conf.pc_subdevice = cfg->subdevice;
devlist_entry->pci.conf.pc_vendor = cfg->vendor;
devlist_entry->pci.conf.pc_device = cfg->device;
devlist_entry->pci.conf.pc_class = cfg->baseclass;
devlist_entry->pci.conf.pc_subclass = cfg->subclass;
devlist_entry->pci.conf.pc_progif = cfg->progif;
devlist_entry->pci.conf.pc_revid = cfg->revid;
}
return (devlist_entry);
#undef REG
}
/* free pcicfgregs structure and all depending data structures */
static int
cardbus_freecfg(struct cardbus_devinfo *dinfo)
{
free(dinfo, M_DEVBUF);
return (0);
}
static void
cardbus_print_verbose(struct cardbus_devinfo *dinfo)
{
#ifndef CARDBUS_DEBUG
if (bootverbose)
#endif /* CARDBUS_DEBUG */
{
pcicfgregs *cfg = &dinfo->pci.cfg;
printf("found->\tvendor=0x%04x, dev=0x%04x, revid=0x%02x\n",
cfg->vendor, cfg->device, cfg->revid);
printf("\tclass=%02x-%02x-%02x, hdrtype=0x%02x, mfdev=%d\n",
cfg->baseclass, cfg->subclass, cfg->progif,
cfg->hdrtype, cfg->mfdev);
#ifdef CARDBUS_DEBUG
printf("\tcmdreg=0x%04x, statreg=0x%04x, "
"cachelnsz=%d (dwords)\n",
cfg->cmdreg, cfg->statreg, cfg->cachelnsz);
printf("\tlattimer=0x%02x (%d ns), mingnt=0x%02x (%d ns), "
"maxlat=0x%02x (%d ns)\n",
cfg->lattimer, cfg->lattimer * 30,
cfg->mingnt, cfg->mingnt * 250, cfg->maxlat,
cfg->maxlat * 250);
#endif /* CARDBUS_DEBUG */
if (cfg->intpin > 0)
printf("\tintpin=%c, irq=%d\n",
cfg->intpin + 'a' - 1, cfg->intline);
}
}
/************************************************************************/
/* Resources */
/************************************************************************/
static int
cardbus_set_resource(device_t cbdev, device_t child, int type, int rid,
u_long start, u_long count, struct resource *res)
{
struct cardbus_devinfo *dinfo;
struct resource_list *rl;
struct resource_list_entry *rle;
if (device_get_parent(child) != cbdev)
return ENOENT;
dinfo = device_get_ivars(child);
rl = &dinfo->pci.resources;
rle = resource_list_find(rl, type, rid);
if (rle == NULL) {
resource_list_add(rl, type, rid, start, start + count - 1,
count);
if (res != NULL) {
rle = resource_list_find(rl, type, rid);
rle->res = res;
}
} else {
if (rle->res == NULL) {
} else if (rle->res->r_dev == cbdev &&
(!(rman_get_flags(rle->res) & RF_ACTIVE))) {
int f;
f = rman_get_flags(rle->res);
bus_release_resource(cbdev, type, rid, res);
rle->res = bus_alloc_resource(cbdev, type, &rid,
start, start + count - 1,
count, f);
} else {
device_printf(cbdev, "set_resource: resource busy\n");
return EBUSY;
}
rle->start = start;
rle->end = start + count - 1;
rle->count = count;
if (res != NULL)
rle->res = res;
}
if (device_get_parent(child) == cbdev)
pci_write_config(child, rid, start, 4);
return 0;
}
static int
cardbus_get_resource(device_t cbdev, device_t child, int type, int rid,
u_long *startp, u_long *countp)
{
struct cardbus_devinfo *dinfo;
struct resource_list *rl;
struct resource_list_entry *rle;
if (device_get_parent(child) != cbdev)
return ENOENT;
dinfo = device_get_ivars(child);
rl = &dinfo->pci.resources;
rle = resource_list_find(rl, type, rid);
if (!rle)
return ENOENT;
if (startp)
*startp = rle->start;
if (countp)
*countp = rle->count;
return 0;
}
static void
cardbus_delete_resource(device_t cbdev, device_t child, int type, int rid)
{
struct cardbus_devinfo *dinfo;
struct resource_list *rl;
struct resource_list_entry *rle;
if (device_get_parent(child) != cbdev)
return;
dinfo = device_get_ivars(child);
rl = &dinfo->pci.resources;
rle = resource_list_find(rl, type, rid);
if (rle) {
if (rle->res) {
if (rle->res->r_dev != cbdev ||
rman_get_flags(rle->res) & RF_ACTIVE) {
device_printf(cbdev, "delete_resource: "
"Resource still owned by child, oops. "
"(type=%d, rid=%d, addr=%lx)\n",
rle->type, rle->rid,
rman_get_start(rle->res));
return;
}
bus_release_resource(cbdev, type, rid, rle->res);
}
resource_list_delete(rl, type, rid);
}
if (device_get_parent(child) == cbdev)
pci_write_config(child, rid, 0, 4);
}
static int
cardbus_set_resource_method(device_t cbdev, device_t child, int type, int rid,
u_long start, u_long count)
{
int ret;
ret = cardbus_set_resource(cbdev, child, type, rid, start, count, NULL);
if (ret != 0)
return ret;
return BUS_SET_RESOURCE(device_get_parent(cbdev), child, type, rid,
start, count);
}
static int
cardbus_get_resource_method(device_t cbdev, device_t child, int type, int rid,
u_long *startp, u_long *countp)
{
int ret;
ret = cardbus_get_resource(cbdev, child, type, rid, startp, countp);
if (ret != 0)
return ret;
return BUS_GET_RESOURCE(device_get_parent(cbdev), child, type, rid,
startp, countp);
}
static void
cardbus_delete_resource_method(device_t cbdev, device_t child,
int type, int rid)
{
cardbus_delete_resource(cbdev, child, type, rid);
BUS_DELETE_RESOURCE(device_get_parent(cbdev), child, type, rid);
}
static void
cardbus_release_all_resources(device_t cbdev, struct cardbus_devinfo *dinfo)
{
struct resource_list_entry *rle;
/* Free all allocated resources */
SLIST_FOREACH(rle, &dinfo->pci.resources, link) {
if (rle->res) {
if (rle->res->r_dev != cbdev)
device_printf(cbdev, "release_all_resource: "
"Resource still owned by child, oops. "
"(type=%d, rid=%d, addr=%lx)\n",
rle->type, rle->rid,
rman_get_start(rle->res));
BUS_RELEASE_RESOURCE(device_get_parent(cbdev),
rle->res->r_dev,
rle->type, rle->rid,
rle->res);
rle->res = NULL;
/*
* zero out config so the card won't acknowledge
* access to the space anymore
*/
pci_write_config(dinfo->pci.cfg.dev, rle->rid, 0, 4);
}
}
resource_list_free(&dinfo->pci.resources);
}
static struct resource *
cardbus_alloc_resource(device_t cbdev, device_t child, int type,
int *rid, u_long start, u_long end, u_long count, u_int flags)
{
struct cardbus_devinfo *dinfo;
struct resource_list_entry *rle = 0;
int passthrough = (device_get_parent(child) != cbdev);
if (passthrough) {
return (BUS_ALLOC_RESOURCE(device_get_parent(cbdev), child,
type, rid, start, end, count, flags));
}
dinfo = device_get_ivars(child);
rle = resource_list_find(&dinfo->pci.resources, type, *rid);
if (!rle)
return NULL; /* no resource of that type/rid */
if (!rle->res) {
device_printf(cbdev, "WARNING: Resource not reserved by bus\n");
return NULL;
} else {
/* Release the cardbus hold on the resource */
if (rle->res->r_dev != cbdev)
return NULL;
bus_release_resource(cbdev, type, *rid, rle->res);
rle->res = NULL;
switch (type) {
case SYS_RES_IOPORT:
case SYS_RES_MEMORY:
if (!(flags & RF_ALIGNMENT_MASK))
flags |= rman_make_alignment_flags(rle->count);
break;
case SYS_RES_IRQ:
flags |= RF_SHAREABLE;
break;
}
/* Allocate the resource to the child */
return resource_list_alloc(&dinfo->pci.resources, cbdev, child,
type, rid, rle->start, rle->end, rle->count, flags);
}
}
static int
cardbus_release_resource(device_t cbdev, device_t child, int type, int rid,
struct resource *r)
{
struct cardbus_devinfo *dinfo;
int passthrough = (device_get_parent(child) != cbdev);
struct resource_list_entry *rle = 0;
int flags;
int ret;
if (passthrough) {
return BUS_RELEASE_RESOURCE(device_get_parent(cbdev), child,
type, rid, r);
}
dinfo = device_get_ivars(child);
/*
* According to the PCI 2.2 spec, devices may share an address
* decoder between memory mapped ROM access and memory
* mapped register access. To be safe, disable ROM access
* whenever it is released.
*/
if (rid == CARDBUS_ROM_REG) {
uint32_t rom_reg;
rom_reg = pci_read_config(child, rid, 4);
rom_reg &= ~CARDBUS_ROM_ENABLE;
pci_write_config(child, rid, rom_reg, 4);
}
rle = resource_list_find(&dinfo->pci.resources, type, rid);
if (!rle) {
device_printf(cbdev, "Allocated resource not found\n");
return ENOENT;
}
if (!rle->res) {
device_printf(cbdev, "Allocated resource not recorded\n");
return ENOENT;
}
ret = BUS_RELEASE_RESOURCE(device_get_parent(cbdev), child,
type, rid, r);
switch (type) {
case SYS_RES_IOPORT:
case SYS_RES_MEMORY:
flags = rman_make_alignment_flags(rle->count);
break;
case SYS_RES_IRQ:
flags = RF_SHAREABLE;
break;
default:
flags = 0;
}
/* Restore cardbus hold on the resource */
rle->res = bus_alloc_resource(cbdev, type, &rid,
rle->start, rle->end, rle->count, flags);
if (rle->res == NULL)
device_printf(cbdev, "release_resource: "
"unable to reacquire resource\n");
return ret;
}
static int
cardbus_setup_intr(device_t cbdev, device_t child, struct resource *irq,
int flags, driver_intr_t *intr, void *arg, void **cookiep)
{
int ret;
device_t cdev;
struct cardbus_devinfo *dinfo;
ret = bus_generic_setup_intr(cbdev, child, irq, flags, intr, arg,
cookiep);
if (ret != 0)
return ret;
for (cdev = child; cbdev != device_get_parent(cdev);
cdev = device_get_parent(cdev))
/* NOTHING */;
dinfo = device_get_ivars(cdev);
return 0;
}
static int
cardbus_teardown_intr(device_t cbdev, device_t child, struct resource *irq,
void *cookie)
{
int ret;
device_t cdev;
struct cardbus_devinfo *dinfo;
ret = bus_generic_teardown_intr(cbdev, child, irq, cookie);
if (ret != 0)
return ret;
for (cdev = child; cbdev != device_get_parent(cdev);
cdev = device_get_parent(cdev))
/* NOTHING */;
dinfo = device_get_ivars(cdev);
return (0);
}
/************************************************************************/
/* Other Bus Methods */
/************************************************************************/
static int
cardbus_print_resources(struct resource_list *rl, const char *name,
int type, const char *format)
{
struct resource_list_entry *rle;
int printed, retval;
printed = 0;
retval = 0;
/* Yes, this is kinda cheating */
SLIST_FOREACH(rle, rl, link) {
if (rle->type == type) {
if (printed == 0)
retval += printf(" %s ", name);
else if (printed > 0)
retval += printf(",");
printed++;
retval += printf(format, rle->start);
if (rle->count > 1) {
retval += printf("-");
retval += printf(format, rle->start +
rle->count - 1);
}
}
}
return retval;
}
static int
cardbus_print_child(device_t cbdev, device_t child)
{
struct cardbus_devinfo *dinfo;
struct resource_list *rl;
pcicfgregs *cfg;
int retval = 0;
dinfo = device_get_ivars(child);
cfg = &dinfo->pci.cfg;
rl = &dinfo->pci.resources;
retval += bus_print_child_header(cbdev, child);
retval += cardbus_print_resources(rl, "port", SYS_RES_IOPORT, "%#lx");
retval += cardbus_print_resources(rl, "mem", SYS_RES_MEMORY, "%#lx");
retval += cardbus_print_resources(rl, "irq", SYS_RES_IRQ, "%ld");
if (device_get_flags(cbdev))
retval += printf(" flags %#x", device_get_flags(cbdev));
retval += printf(" at device %d.%d", pci_get_slot(child),
pci_get_function(child));
retval += bus_print_child_footer(cbdev, child);
return (retval);
}
static void
cardbus_probe_nomatch(device_t cbdev, device_t child)
{
struct cardbus_devinfo *dinfo;
pcicfgregs *cfg;
dinfo = device_get_ivars(child);
cfg = &dinfo->pci.cfg;
device_printf(cbdev, "<unknown card>");
printf(" (vendor=0x%04x, dev=0x%04x)", cfg->vendor, cfg->device);
printf(" at %d.%d", pci_get_slot(child), pci_get_function(child));
if (cfg->intpin > 0 && cfg->intline != 255) {
printf(" irq %d", cfg->intline);
}
printf("\n");
return;
}
static int
cardbus_read_ivar(device_t cbdev, device_t child, int which, u_long *result)
{
struct cardbus_devinfo *dinfo;
pcicfgregs *cfg;
dinfo = device_get_ivars(child);
cfg = &dinfo->pci.cfg;
switch (which) {
case PCI_IVAR_SUBVENDOR:
*result = cfg->subvendor;
break;
case PCI_IVAR_SUBDEVICE:
*result = cfg->subdevice;
break;
case PCI_IVAR_VENDOR:
*result = cfg->vendor;
break;
case PCI_IVAR_DEVICE:
*result = cfg->device;
break;
case PCI_IVAR_DEVID:
*result = (cfg->device << 16) | cfg->vendor;
break;
case PCI_IVAR_CLASS:
*result = cfg->baseclass;
break;
case PCI_IVAR_SUBCLASS:
*result = cfg->subclass;
break;
case PCI_IVAR_PROGIF:
*result = cfg->progif;
break;
case PCI_IVAR_REVID:
*result = cfg->revid;
break;
case PCI_IVAR_INTPIN:
*result = cfg->intpin;
break;
case PCI_IVAR_IRQ:
*result = cfg->intline;
break;
case PCI_IVAR_BUS:
*result = cfg->bus;
break;
case PCI_IVAR_SLOT:
*result = cfg->slot;
break;
case PCI_IVAR_FUNCTION:
*result = cfg->func;
break;
default:
return ENOENT;
}
return 0;
}
static int
cardbus_write_ivar(device_t cbdev, device_t child, int which, uintptr_t value)
{
struct cardbus_devinfo *dinfo;
pcicfgregs *cfg;
dinfo = device_get_ivars(child);
cfg = &dinfo->pci.cfg;
switch (which) {
case PCI_IVAR_SUBVENDOR:
case PCI_IVAR_SUBDEVICE:
case PCI_IVAR_VENDOR:
case PCI_IVAR_DEVICE:
case PCI_IVAR_DEVID:
case PCI_IVAR_CLASS:
case PCI_IVAR_SUBCLASS:
case PCI_IVAR_PROGIF:
case PCI_IVAR_REVID:
case PCI_IVAR_INTPIN:
case PCI_IVAR_IRQ:
case PCI_IVAR_BUS:
case PCI_IVAR_SLOT:
case PCI_IVAR_FUNCTION:
return EINVAL; /* disallow for now */
default:
return ENOENT;
}
return 0;
}
/************************************************************************/
/* Compatibility with PCI bus (XXX: Do we need this?) */
/************************************************************************/
/*
* PCI power manangement
*/
static int
cardbus_set_powerstate_method(device_t cbdev, device_t child, int state)
{
struct cardbus_devinfo *dinfo = device_get_ivars(child);
pcicfgregs *cfg = &dinfo->pci.cfg;
u_int16_t status;
int result;
if (cfg->pp_cap != 0) {
status = PCI_READ_CONFIG(cbdev, child, cfg->pp_status, 2)
& ~PCIM_PSTAT_DMASK;
result = 0;
switch (state) {
case PCI_POWERSTATE_D0:
status |= PCIM_PSTAT_D0;
break;
case PCI_POWERSTATE_D1:
if (cfg->pp_cap & PCIM_PCAP_D1SUPP) {
status |= PCIM_PSTAT_D1;
} else {
result = EOPNOTSUPP;
}
break;
case PCI_POWERSTATE_D2:
if (cfg->pp_cap & PCIM_PCAP_D2SUPP) {
status |= PCIM_PSTAT_D2;
} else {
result = EOPNOTSUPP;
}
break;
case PCI_POWERSTATE_D3:
status |= PCIM_PSTAT_D3;
break;
default:
result = EINVAL;
}
if (result == 0)
PCI_WRITE_CONFIG(cbdev, child, cfg->pp_status,
status, 2);
} else {
result = ENXIO;
}
return (result);
}
static int
cardbus_get_powerstate_method(device_t cbdev, device_t child)
{
struct cardbus_devinfo *dinfo = device_get_ivars(child);
pcicfgregs *cfg = &dinfo->pci.cfg;
u_int16_t status;
int result;
if (cfg->pp_cap != 0) {
status = PCI_READ_CONFIG(cbdev, child, cfg->pp_status, 2);
switch (status & PCIM_PSTAT_DMASK) {
case PCIM_PSTAT_D0:
result = PCI_POWERSTATE_D0;
break;
case PCIM_PSTAT_D1:
result = PCI_POWERSTATE_D1;
break;
case PCIM_PSTAT_D2:
result = PCI_POWERSTATE_D2;
break;
case PCIM_PSTAT_D3:
result = PCI_POWERSTATE_D3;
break;
default:
result = PCI_POWERSTATE_UNKNOWN;
break;
}
} else {
/* No support, device is always at D0 */
result = PCI_POWERSTATE_D0;
}
return (result);
}
static u_int32_t
cardbus_read_config_method(device_t cbdev, device_t child, int reg, int width)
{
struct cardbus_devinfo *dinfo = device_get_ivars(child);
pcicfgregs *cfg = &dinfo->pci.cfg;
return PCIB_READ_CONFIG(device_get_parent(cbdev),
cfg->bus, cfg->slot, cfg->func, reg, width);
}
static void
cardbus_write_config_method(device_t cbdev, device_t child, int reg,
u_int32_t val, int width)
{
struct cardbus_devinfo *dinfo = device_get_ivars(child);
pcicfgregs *cfg = &dinfo->pci.cfg;
PCIB_WRITE_CONFIG(device_get_parent(cbdev),
cfg->bus, cfg->slot, cfg->func, reg, val, width);
}
static __inline void
cardbus_set_command_bit(device_t cbdev, device_t child, u_int16_t bit)
{
u_int16_t command;
command = PCI_READ_CONFIG(cbdev, child, PCIR_COMMAND, 2);
command |= bit;
PCI_WRITE_CONFIG(cbdev, child, PCIR_COMMAND, command, 2);
}
static __inline void
cardbus_clear_command_bit(device_t cbdev, device_t child, u_int16_t bit)
{
u_int16_t command;
command = PCI_READ_CONFIG(cbdev, child, PCIR_COMMAND, 2);
command &= ~bit;
PCI_WRITE_CONFIG(cbdev, child, PCIR_COMMAND, command, 2);
}
static void
cardbus_enable_busmaster_method(device_t cbdev, device_t child)
{
cardbus_set_command_bit(cbdev, child, PCIM_CMD_BUSMASTEREN);
}
static void
cardbus_disable_busmaster_method(device_t cbdev, device_t child)
{
cardbus_clear_command_bit(cbdev, child, PCIM_CMD_BUSMASTEREN);
}
static void
cardbus_enable_io_method(device_t cbdev, device_t child, int space)
{
switch (space) {
case SYS_RES_IOPORT:
cardbus_set_command_bit(cbdev, child, PCIM_CMD_PORTEN);
break;
case SYS_RES_MEMORY:
cardbus_set_command_bit(cbdev, child, PCIM_CMD_MEMEN);
break;
}
}
static void
cardbus_disable_io_method(device_t cbdev, device_t child, int space)
{
switch (space) {
case SYS_RES_IOPORT:
cardbus_clear_command_bit(cbdev, child, PCIM_CMD_PORTEN);
break;
case SYS_RES_MEMORY:
cardbus_clear_command_bit(cbdev, child, PCIM_CMD_MEMEN);
break;
}
}
static device_method_t cardbus_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, cardbus_probe),
DEVMETHOD(device_attach, cardbus_attach),
DEVMETHOD(device_detach, cardbus_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD(device_suspend, cardbus_suspend),
DEVMETHOD(device_resume, cardbus_resume),
/* Bus interface */
DEVMETHOD(bus_print_child, cardbus_print_child),
DEVMETHOD(bus_probe_nomatch, cardbus_probe_nomatch),
DEVMETHOD(bus_read_ivar, cardbus_read_ivar),
DEVMETHOD(bus_write_ivar, cardbus_write_ivar),
DEVMETHOD(bus_driver_added, cardbus_driver_added),
DEVMETHOD(bus_alloc_resource, cardbus_alloc_resource),
DEVMETHOD(bus_release_resource, cardbus_release_resource),
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
DEVMETHOD(bus_setup_intr, cardbus_setup_intr),
DEVMETHOD(bus_teardown_intr, cardbus_teardown_intr),
DEVMETHOD(bus_set_resource, cardbus_set_resource_method),
DEVMETHOD(bus_get_resource, cardbus_get_resource_method),
DEVMETHOD(bus_delete_resource, cardbus_delete_resource_method),
/* Card Interface */
DEVMETHOD(card_attach_card, cardbus_attach_card),
DEVMETHOD(card_detach_card, cardbus_detach_card),
DEVMETHOD(card_cis_read, cardbus_cis_read),
DEVMETHOD(card_cis_free, cardbus_cis_free),
/* Cardbus/PCI interface */
DEVMETHOD(pci_read_config, cardbus_read_config_method),
DEVMETHOD(pci_write_config, cardbus_write_config_method),
DEVMETHOD(pci_enable_busmaster, cardbus_enable_busmaster_method),
DEVMETHOD(pci_disable_busmaster, cardbus_disable_busmaster_method),
DEVMETHOD(pci_enable_io, cardbus_enable_io_method),
DEVMETHOD(pci_disable_io, cardbus_disable_io_method),
DEVMETHOD(pci_get_powerstate, cardbus_get_powerstate_method),
DEVMETHOD(pci_set_powerstate, cardbus_set_powerstate_method),
{0,0}
};
static driver_t cardbus_driver = {
"cardbus",
cardbus_methods,
0 /* no softc */
};
static devclass_t cardbus_devclass;
DRIVER_MODULE(cardbus, cbb, cardbus_driver, cardbus_devclass, 0, 0);
MODULE_VERSION(cardbus, 1);
MODULE_DEPEND(cardbus, exca, 1, 1, 1);
/*
MODULE_DEPEND(cardbus, pccbb, 1, 1, 1);
*/
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