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/*-
* Copyright (c) 2003 M. Warner Losh. All Rights Reserved.
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/module.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/pci/pci_private.h>
#include <dev/cardbus/cardbusreg.h>
#include <dev/cardbus/cardbusvar.h>
#include <dev/cardbus/cardbus_cis.h>
#include <dev/pccard/pccard_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 void cardbus_add_map(device_t cbdev, device_t child, int reg);
static int cardbus_alloc_resources(device_t cbdev, device_t child);
static int cardbus_attach(device_t cbdev);
static int cardbus_attach_card(device_t cbdev);
static int cardbus_barsort(const void *a, const void *b);
static int cardbus_detach(device_t cbdev);
static int cardbus_detach_card(device_t cbdev);
static void cardbus_device_setup_regs(device_t brdev, int b, int s, int f,
pcicfgregs *cfg);
static void cardbus_driver_added(device_t cbdev, driver_t *driver);
static void cardbus_pickup_maps(device_t cbdev, device_t child);
static int cardbus_probe(device_t cbdev);
static int cardbus_read_ivar(device_t cbdev, device_t child, int which,
uintptr_t *result);
static void cardbus_release_all_resources(device_t cbdev,
struct cardbus_devinfo *dinfo);
static int cardbus_write_ivar(device_t cbdev, device_t child, int which,
uintptr_t value);
/*
* Resource allocation
*/
/*
* Adding a memory/io resource (sans CIS)
*/
static void
cardbus_add_map(device_t cbdev, device_t child, int reg)
{
struct cardbus_devinfo *dinfo = device_get_ivars(child);
struct resource_list_entry *rle;
uint32_t size;
uint32_t testval;
int type;
SLIST_FOREACH(rle, &dinfo->pci.resources, link) {
if (rle->rid == reg)
return;
}
if (reg == CARDBUS_ROM_REG)
testval = CARDBUS_ROM_ADDRMASK;
else
testval = ~0;
pci_write_config(child, reg, testval, 4);
testval = pci_read_config(child, reg, 4);
if (testval == ~0 || testval == 0)
return;
if ((testval & 1) == 0)
type = SYS_RES_MEMORY;
else
type = SYS_RES_IOPORT;
size = CARDBUS_MAPREG_MEM_SIZE(testval);
device_printf(cbdev, "Resource not specified in CIS: id=%x, size=%x\n",
reg, size);
resource_list_add(&dinfo->pci.resources, type, reg, 0UL, ~0UL, size);
}
static void
cardbus_pickup_maps(device_t cbdev, device_t child)
{
struct cardbus_devinfo *dinfo = device_get_ivars(child);
int reg;
/*
* Try to pick up any resources that was not specified in CIS.
* Maybe this isn't any longer necessary now that we have fixed
* CIS parsing and we should filter things here? XXX
*/
for (reg = 0; reg < dinfo->pci.cfg.nummaps; reg++)
cardbus_add_map(cbdev, child, PCIR_BAR(reg));
}
static void
cardbus_do_res(struct resource_list_entry *rle, device_t child, uint32_t start)
{
rle->start = start;
rle->end = start + rle->count - 1;
pci_write_config(child, rle->rid, rle->start, 4);
}
static int
cardbus_barsort(const void *a, const void *b)
{
return ((*(const struct resource_list_entry * const *)b)->count -
(*(const struct resource_list_entry * const *)a)->count);
}
/* XXX this function is too long */
static int
cardbus_alloc_resources(device_t cbdev, device_t child)
{
struct cardbus_devinfo *dinfo = device_get_ivars(child);
int count;
struct resource_list_entry *rle;
struct resource_list_entry **barlist;
int tmp;
uint32_t mem_psize = 0, mem_nsize = 0, io_size = 0;
struct resource *res;
uint32_t start,end;
int rid, flags;
count = 0;
SLIST_FOREACH(rle, &dinfo->pci.resources, link) {
count++;
}
if (count == 0)
return (0);
barlist = malloc(sizeof(struct resource_list_entry*) * count, M_DEVBUF,
M_WAITOK);
count = 0;
SLIST_FOREACH(rle, &dinfo->pci.resources, link) {
barlist[count] = rle;
if (rle->type == SYS_RES_IOPORT) {
io_size += rle->count;
} else if (rle->type == SYS_RES_MEMORY) {
if (dinfo->mprefetchable & BARBIT(rle->rid))
mem_psize += rle->count;
else
mem_nsize += rle->count;
}
count++;
}
/*
* We want to allocate the largest resource first, so that our
* allocated memory is packed.
*/
qsort(barlist, count, sizeof(struct resource_list_entry *),
cardbus_barsort);
/* Allocate prefetchable memory */
flags = 0;
for (tmp = 0; tmp < count; tmp++) {
rle = barlist[tmp];
if (rle->res == NULL &&
rle->type == SYS_RES_MEMORY &&
dinfo->mprefetchable & BARBIT(rle->rid)) {
flags = rman_make_alignment_flags(rle->count);
break;
}
}
if (flags > 0) { /* If any prefetchable memory is requested... */
/*
* First we allocate one big space for all resources of this
* type. We do this because our parent, pccbb, needs to open
* a window to forward all addresses within the window, and
* it would be best if nobody else has resources allocated
* within the window.
* (XXX: Perhaps there might be a better way to do this?)
*/
rid = 0;
res = bus_alloc_resource(cbdev, SYS_RES_MEMORY, &rid, 0,
(dinfo->mprefetchable & dinfo->mbelow1mb)?0xFFFFF:~0UL,
mem_psize, flags);
if (res == NULL) {
device_printf(cbdev,
"Can't get memory for prefetch mem\n");
free(barlist, M_DEVBUF);
return (EIO);
}
start = rman_get_start(res);
end = rman_get_end(res);
DEVPRINTF((cbdev, "Prefetchable memory at %x-%x\n", start, end));
/*
* Now that we know the region is free, release it and hand it
* out piece by piece.
*/
bus_release_resource(cbdev, SYS_RES_MEMORY, rid, res);
for (tmp = 0; tmp < count; tmp++) {
rle = barlist[tmp];
if (rle->type == SYS_RES_MEMORY &&
dinfo->mprefetchable & BARBIT(rle->rid)) {
cardbus_do_res(rle, child, start);
start += rle->count;
}
}
}
/* Allocate non-prefetchable memory */
flags = 0;
for (tmp = 0; tmp < count; tmp++) {
rle = barlist[tmp];
if (rle->type == SYS_RES_MEMORY &&
(dinfo->mprefetchable & BARBIT(rle->rid)) == 0) {
flags = rman_make_alignment_flags(rle->count);
break;
}
}
if (flags > 0) { /* If any non-prefetchable memory is requested... */
/*
* First we allocate one big space for all resources of this
* type. We do this because our parent, pccbb, needs to open
* a window to forward all addresses within the window, and
* it would be best if nobody else has resources allocated
* within the window.
* (XXX: Perhaps there might be a better way to do this?)
*/
rid = 0;
res = bus_alloc_resource(cbdev, SYS_RES_MEMORY, &rid, 0,
((~dinfo->mprefetchable) & dinfo->mbelow1mb)?0xFFFFF:~0UL,
mem_nsize, flags);
if (res == NULL) {
device_printf(cbdev,
"Can't get memory for non-prefetch mem\n");
free(barlist, M_DEVBUF);
return (EIO);
}
start = rman_get_start(res);
end = rman_get_end(res);
DEVPRINTF((cbdev, "Non-prefetchable memory at %x-%x\n",
start, end));
/*
* Now that we know the region is free, release it and hand it
* out piece by piece.
*/
bus_release_resource(cbdev, SYS_RES_MEMORY, rid, res);
for (tmp = 0; tmp < count; tmp++) {
rle = barlist[tmp];
if (rle->type == SYS_RES_MEMORY &&
(dinfo->mprefetchable & BARBIT(rle->rid)) == 0) {
cardbus_do_res(rle, child, start);
start += rle->count;
}
}
}
/* Allocate IO ports */
flags = 0;
for (tmp = 0; tmp < count; tmp++) {
rle = barlist[tmp];
if (rle->type == SYS_RES_IOPORT) {
flags = rman_make_alignment_flags(rle->count);
break;
}
}
if (flags > 0) { /* If any IO port is requested... */
/*
* First we allocate one big space for all resources of this
* type. We do this because our parent, pccbb, needs to open
* a window to forward all addresses within the window, and
* it would be best if nobody else has resources allocated
* within the window.
* (XXX: Perhaps there might be a better way to do this?)
*/
rid = 0;
res = bus_alloc_resource(cbdev, SYS_RES_IOPORT, &rid, 0,
(dinfo->ibelow1mb)?0xFFFFF:~0UL, io_size, flags);
if (res == NULL) {
device_printf(cbdev,
"Can't get memory for IO ports\n");
free(barlist, M_DEVBUF);
return (EIO);
}
start = rman_get_start(res);
end = rman_get_end(res);
DEVPRINTF((cbdev, "IO port at %x-%x\n", start, end));
/*
* Now that we know the region is free, release it and hand it
* out piece by piece.
*/
bus_release_resource(cbdev, SYS_RES_IOPORT, rid, res);
for (tmp = 0; tmp < count; tmp++) {
rle = barlist[tmp];
if (rle->type == SYS_RES_IOPORT) {
cardbus_do_res(rle, child, start);
start += rle->count;
}
}
}
/* Allocate IRQ */
rid = 0;
res = bus_alloc_resource_any(cbdev, SYS_RES_IRQ, &rid, RF_SHAREABLE);
if (res == NULL) {
device_printf(cbdev, "Can't get memory for irq\n");
free(barlist, M_DEVBUF);
return (EIO);
}
start = rman_get_start(res);
end = rman_get_end(res);
bus_release_resource(cbdev, SYS_RES_IRQ, rid, res);
resource_list_add(&dinfo->pci.resources, SYS_RES_IRQ, rid, start, end,
1);
dinfo->pci.cfg.intline = rman_get_start(res);
pci_write_config(child, PCIR_INTLINE, rman_get_start(res), 1);
free(barlist, M_DEVBUF);
return (0);
}
/************************************************************************/
/* 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);
return 0;
}
static int
cardbus_suspend(device_t self)
{
cardbus_detach_card(self);
return (0);
}
static int
cardbus_resume(device_t self)
{
return (0);
}
/************************************************************************/
/* Attach/Detach card */
/************************************************************************/
static void
cardbus_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);
}
static int
cardbus_attach_card(device_t cbdev)
{
device_t brdev = device_get_parent(cbdev);
device_t child;
int cardattached = 0;
int bus, slot, func;
cardbus_detach_card(cbdev); /* detach existing cards */
POWER_ENABLE_SOCKET(brdev, cbdev);
bus = pcib_get_bus(cbdev);
/* 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;
dinfo = (struct cardbus_devinfo *)
pci_read_device(brdev, bus, slot, func,
sizeof(struct cardbus_devinfo));
if (dinfo == NULL)
continue;
if (dinfo->pci.cfg.mfdev)
cardbusfunchigh = CARDBUS_FUNCMAX;
cardbus_device_setup_regs(brdev, bus, slot, func,
&dinfo->pci.cfg);
child = device_add_child(cbdev, NULL, -1);
if (child == NULL) {
DEVPRINTF((cbdev, "Cannot add child!\n"));
pci_freecfg((struct pci_devinfo *)dinfo);
continue;
}
dinfo->pci.cfg.dev = child;
resource_list_init(&dinfo->pci.resources);
device_set_ivars(child, dinfo);
if (cardbus_do_cis(cbdev, child) != 0) {
DEVPRINTF((cbdev, "Can't parse cis\n"));
pci_freecfg((struct pci_devinfo *)dinfo);
continue;
}
cardbus_pickup_maps(cbdev, child);
cardbus_alloc_resources(cbdev, child);
pci_cfg_save(child, &dinfo->pci, 0);
pci_cfg_restore(child, &dinfo->pci);
pci_print_verbose(&dinfo->pci);
if (device_probe_and_attach(child) == 0)
cardattached++;
}
}
if (cardattached > 0)
return (0);
POWER_DISABLE_SOCKET(brdev, cbdev);
return (ENOENT);
}
static int
cardbus_detach_card(device_t cbdev)
{
int numdevs;
device_t *devlist;
int tmp;
int err = 0;
device_get_children(cbdev, &devlist, &numdevs);
if (numdevs == 0) {
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 (dinfo->pci.cfg.dev != devlist[tmp])
device_printf(cbdev, "devinfo dev mismatch\n");
if (status == DS_ATTACHED || status == DS_BUSY)
device_detach(devlist[tmp]);
cardbus_release_all_resources(cbdev, dinfo);
device_delete_child(cbdev, devlist[tmp]);
pci_freecfg((struct pci_devinfo *)dinfo);
}
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)
{
int numdevs;
device_t *devlist;
device_t dev;
int i;
struct cardbus_devinfo *dinfo;
DEVICE_IDENTIFY(driver, cbdev);
device_get_children(cbdev, &devlist, &numdevs);
/*
* If there are no drivers attached, but there are children,
* then power the card up.
*/
for (i = 0; i < numdevs; i++) {
dev = devlist[i];
if (device_get_state(dev) != DS_NOTPRESENT)
break;
}
if (i > 0 && i == numdevs)
POWER_ENABLE_SOCKET(device_get_parent(cbdev), cbdev);
for (i = 0; i < numdevs; i++) {
dev = devlist[i];
if (device_get_state(dev) != DS_NOTPRESENT)
continue;
dinfo = device_get_ivars(dev);
pci_print_verbose(&dinfo->pci);
pci_cfg_restore(dev, &dinfo->pci);
device_probe_and_attach(dev);
}
free(devlist, M_TEMP);
}
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 (rman_get_device(rle->res) != 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),
cbdev, 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);
}
/************************************************************************/
/* Other Bus Methods */
/************************************************************************/
static int
cardbus_read_ivar(device_t cbdev, device_t child, int which, uintptr_t *result)
{
struct cardbus_devinfo *dinfo;
pcicfgregs *cfg;
dinfo = device_get_ivars(child);
cfg = &dinfo->pci.cfg;
switch (which) {
case PCI_IVAR_ETHADDR:
/*
* The generic accessor doesn't deal with failure, so
* we set the return value, then return an error.
*/
if (dinfo->fepresent & (1 << PCCARD_TPLFE_TYPE_LAN_NID)) {
*((uint8_t **) result) = dinfo->funce.lan.nid;
break;
}
*((uint8_t **) result) = NULL;
return (EINVAL);
default:
return (pci_read_ivar(cbdev, child, which, result));
}
return 0;
}
static int
cardbus_write_ivar(device_t cbdev, device_t child, int which, uintptr_t value)
{
return(pci_write_ivar(cbdev, child, which, value));
}
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_suspend, cardbus_suspend),
DEVMETHOD(device_resume, cardbus_resume),
/* Bus interface */
DEVMETHOD(bus_read_ivar, cardbus_read_ivar),
DEVMETHOD(bus_write_ivar, cardbus_write_ivar),
DEVMETHOD(bus_driver_added, cardbus_driver_added),
/* Card Interface */
DEVMETHOD(card_attach_card, cardbus_attach_card),
DEVMETHOD(card_detach_card, cardbus_detach_card),
{0,0}
};
DECLARE_CLASS(pci_driver);
DEFINE_CLASS_1(cardbus, cardbus_driver, cardbus_methods, 0, pci_driver);
static devclass_t cardbus_devclass;
DRIVER_MODULE(cardbus, cbb, cardbus_driver, cardbus_devclass, 0, 0);
MODULE_VERSION(cardbus, 1);
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