FreeBSD-5.3/sys/dev/cardbus/cardbus_cis.c
/*
* 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.
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/sys/dev/cardbus/cardbus_cis.c,v 1.46 2004/04/11 19:22:25 imp Exp $");
/*
* CIS Handling for the Cardbus Bus
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <sys/endian.h>
#include <sys/pciio.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pccard/pccardvar.h>
#include <dev/pccard/pccard_cis.h>
#include <dev/cardbus/cardbusreg.h>
#include <dev/cardbus/cardbusvar.h>
#include <dev/cardbus/cardbus_cis.h>
extern int cardbus_cis_debug;
#define DPRINTF(a) if (cardbus_cis_debug) printf a
#define DEVPRINTF(x) if (cardbus_cis_debug) device_printf x
struct tuple_callbacks;
typedef int (tuple_cb) (device_t cbdev, device_t child, int id, int len,
uint8_t *tupledata, uint32_t start, uint32_t *off,
struct tuple_callbacks *info);
struct tuple_callbacks {
int id;
char *name;
tuple_cb *func;
};
static int decode_tuple_generic(device_t cbdev, device_t child, int id,
int len, uint8_t *tupledata, uint32_t start, uint32_t *off,
struct tuple_callbacks *info);
static int decode_tuple_linktarget(device_t cbdev, device_t child, int id,
int len, uint8_t *tupledata, uint32_t start, uint32_t *off,
struct tuple_callbacks *info);
static int decode_tuple_vers_1(device_t cbdev, device_t child, int id,
int len, uint8_t *tupledata, uint32_t start, uint32_t *off,
struct tuple_callbacks *info);
static int decode_tuple_funcid(device_t cbdev, device_t child, int id,
int len, uint8_t *tupledata, uint32_t start, uint32_t *off,
struct tuple_callbacks *info);
static int decode_tuple_manfid(device_t cbdev, device_t child, int id,
int len, uint8_t *tupledata, uint32_t start, uint32_t *off,
struct tuple_callbacks *info);
static int decode_tuple_funce(device_t cbdev, device_t child, int id,
int len, uint8_t *tupledata, uint32_t start, uint32_t *off,
struct tuple_callbacks *info);
static int decode_tuple_bar(device_t cbdev, device_t child, int id,
int len, uint8_t *tupledata, uint32_t start, uint32_t *off,
struct tuple_callbacks *info);
static int decode_tuple_unhandled(device_t cbdev, device_t child, int id,
int len, uint8_t *tupledata, uint32_t start, uint32_t *off,
struct tuple_callbacks *info);
static int decode_tuple_end(device_t cbdev, device_t child, int id,
int len, uint8_t *tupledata, uint32_t start, uint32_t *off,
struct tuple_callbacks *info);
static int cardbus_read_tuple_conf(device_t cbdev, device_t child,
uint32_t start, uint32_t *off, int *tupleid, int *len,
uint8_t *tupledata);
static int cardbus_read_tuple_mem(device_t cbdev, struct resource *res,
uint32_t start, uint32_t *off, int *tupleid, int *len,
uint8_t *tupledata);
static int cardbus_read_tuple(device_t cbdev, device_t child,
struct resource *res, uint32_t start, uint32_t *off,
int *tupleid, int *len, uint8_t *tupledata);
static void cardbus_read_tuple_finish(device_t cbdev, device_t child,
int rid, struct resource *res);
static struct resource *cardbus_read_tuple_init(device_t cbdev, device_t child,
uint32_t *start, int *rid);
static int decode_tuple(device_t cbdev, device_t child, int tupleid,
int len, uint8_t *tupledata, uint32_t start,
uint32_t *off, struct tuple_callbacks *callbacks);
static int cardbus_parse_cis(device_t cbdev, device_t child,
struct tuple_callbacks *callbacks);
static int barsort(const void *a, const void *b);
static int cardbus_alloc_resources(device_t cbdev, device_t child);
static void cardbus_add_map(device_t cbdev, device_t child, int reg);
static void cardbus_pickup_maps(device_t cbdev, device_t child);
#define MAKETUPLE(NAME,FUNC) { CISTPL_ ## NAME, #NAME, decode_tuple_ ## FUNC }
static char *funcnames[] = {
"Multi-Functioned",
"Memory",
"Serial Port",
"Parallel Port",
"Fixed Disk",
"Video Adaptor",
"Network Adaptor",
"AIMS",
"SCSI",
"Security"
};
/*
* Handler functions for various CIS tuples
*/
static int
decode_tuple_generic(device_t cbdev, device_t child, int id,
int len, uint8_t *tupledata, uint32_t start, uint32_t *off,
struct tuple_callbacks *info)
{
int i;
if (cardbus_cis_debug) {
if (info)
printf("TUPLE: %s [%d]:", info->name, len);
else
printf("TUPLE: Unknown(0x%02x) [%d]:", id, len);
for (i = 0; i < len; i++) {
if (i % 0x10 == 0 && len > 0x10)
printf("\n 0x%02x:", i);
printf(" %02x", tupledata[i]);
}
printf("\n");
}
return (0);
}
static int
decode_tuple_linktarget(device_t cbdev, device_t child, int id,
int len, uint8_t *tupledata, uint32_t start, uint32_t *off,
struct tuple_callbacks *info)
{
int i;
if (cardbus_cis_debug) {
printf("TUPLE: %s [%d]:", info->name, len);
for (i = 0; i < len; i++) {
if (i % 0x10 == 0 && len > 0x10)
printf("\n 0x%02x:", i);
printf(" %02x", tupledata[i]);
}
printf("\n");
}
if (len != 3 || tupledata[0] != 'C' || tupledata[1] != 'I' ||
tupledata[2] != 'S') {
printf("Invalid data for CIS Link Target!\n");
decode_tuple_generic(cbdev, child, id, len, tupledata,
start, off, info);
return (EINVAL);
}
return (0);
}
static int
decode_tuple_vers_1(device_t cbdev, device_t child, int id,
int len, uint8_t *tupledata, uint32_t start, uint32_t *off,
struct tuple_callbacks *info)
{
int i;
if (cardbus_cis_debug) {
printf("Product version: %d.%d\n", tupledata[0], tupledata[1]);
printf("Product name: ");
for (i = 2; i < len; i++) {
if (tupledata[i] == '\0')
printf(" | ");
else if (tupledata[i] == 0xff)
break;
else
printf("%c", tupledata[i]);
}
printf("\n");
}
return (0);
}
static int
decode_tuple_funcid(device_t cbdev, device_t child, int id,
int len, uint8_t *tupledata, uint32_t start, uint32_t *off,
struct tuple_callbacks *info)
{
struct cardbus_devinfo *dinfo = device_get_ivars(child);
int numnames = sizeof(funcnames) / sizeof(funcnames[0]);
int i;
if (cardbus_cis_debug) {
printf("Functions: ");
for (i = 0; i < len; i++) {
if (tupledata[i] < numnames)
printf("%s", funcnames[tupledata[i]]);
else
printf("Unknown(%d)", tupledata[i]);
if (i < len-1)
printf(", ");
}
printf("\n");
}
if (len > 0)
dinfo->funcid = tupledata[0]; /* use first in list */
return (0);
}
static int
decode_tuple_manfid(device_t cbdev, device_t child, int id,
int len, uint8_t *tupledata, uint32_t start, uint32_t *off,
struct tuple_callbacks *info)
{
struct cardbus_devinfo *dinfo = device_get_ivars(child);
int i;
if (cardbus_cis_debug) {
printf("Manufacturer ID: ");
for (i = 0; i < len; i++)
printf("%02x", tupledata[i]);
printf("\n");
}
if (len == 5) {
dinfo->mfrid = tupledata[1] | (tupledata[2] << 8);
dinfo->prodid = tupledata[3] | (tupledata[4] << 8);
}
return (0);
}
static int
decode_tuple_funce(device_t cbdev, device_t child, int id,
int len, uint8_t *tupledata, uint32_t start, uint32_t *off,
struct tuple_callbacks *info)
{
struct cardbus_devinfo *dinfo = device_get_ivars(child);
int type, i;
if (cardbus_cis_debug) {
printf("Function Extension: ");
for (i = 0; i < len; i++)
printf("%02x", tupledata[i]);
printf("\n");
}
if (len < 2) /* too short */
return (0);
type = tupledata[0]; /* XXX <32 always? */
switch (dinfo->funcid) {
case TPL_FUNC_SERIAL:
if (type == TPL_FUNCE_SER_UART) { /* NB: len known > 1 */
dinfo->funce.sio.type = tupledata[1] & 0x1f;
}
dinfo->fepresent |= 1<<type;
break;
case TPL_FUNC_LAN:
switch (type) {
case TPL_FUNCE_LAN_TECH:
dinfo->funce.lan.tech = tupledata[1]; /* XXX mask? */
break;
#if 0
case TPL_FUNCE_LAN_SPEED:
for (i = 0; i < 3; i++) {
if (dinfo->funce.lan.speed[i] == 0) {
if (len > 4) {
dinfo->funce.lan.speed[i] =
...;
}
break;
}
}
break;
#endif
case TPL_FUNCE_LAN_MEDIA:
for (i = 0; i < 4 && dinfo->funce.lan.media[i]; i++) {
if (dinfo->funce.lan.media[i] == 0) {
/* NB: len known > 1 */
dinfo->funce.lan.media[i] =
tupledata[1]; /*XXX? mask */
break;
}
}
break;
case TPL_FUNCE_LAN_NID:
if (tupledata[1] > sizeof(dinfo->funce.lan.nid)) {
/* ignore, warning? */
return (0);
}
bcopy(tupledata + 2, dinfo->funce.lan.nid,
tupledata[1]);
break;
case TPL_FUNCE_LAN_CONN:
dinfo->funce.lan.contype = tupledata[1];/*XXX mask? */
break;
}
dinfo->fepresent |= 1<<type;
break;
}
return (0);
}
static int
decode_tuple_bar(device_t cbdev, device_t child, int id,
int len, uint8_t *tupledata, uint32_t start, uint32_t *off,
struct tuple_callbacks *info)
{
struct cardbus_devinfo *dinfo = device_get_ivars(child);
int type;
uint8_t reg;
uint32_t bar, pci_bar;
if (len != 6) {
device_printf(cbdev, "CIS BAR length not 6 (%d)\n", len);
return (EINVAL);
}
reg = *tupledata;
len = le32toh(*(uint32_t*)(tupledata + 2));
if (reg & TPL_BAR_REG_AS) {
type = SYS_RES_IOPORT;
} else {
type = SYS_RES_MEMORY;
}
bar = reg & TPL_BAR_REG_ASI_MASK;
if (bar == 0) {
device_printf(cbdev, "Invalid BAR type 0 in CIS\n");
return (EINVAL); /* XXX Return an error? */
} else if (bar == 7) {
/* XXX Should we try to map in Option ROMs? */
return (0);
}
/* Convert from BAR type to BAR offset */
bar = CARDBUS_BASE0_REG + (bar - 1) * 4;
if (type == SYS_RES_MEMORY) {
if (reg & TPL_BAR_REG_PREFETCHABLE)
dinfo->mprefetchable |= BARBIT(bar);
#if 0
/*
* XXX: It appears from a careful reading of the spec
* that we're not supposed to honor this when the bridge
* is not on the main system bus. PCI spec doesn't appear
* to allow for memory ranges not listed in the bridge's
* decode range to be decoded. The PC Card spec seems to
* indicate that this should only be done on x86 based
* machines, which seems to imply that on non-x86 machines
* the adddresses can be anywhere. This further implies that
* since the hardware can do it on non-x86 machines, it should
* be able to do it on x86 machines. Therefore, we can and
* should ignore this hint. Furthermore, the PC Card spec
* recommends always allocating memory above 1MB, contradicting
* the other part of the PC Card spec.
*
* NetBSD ignores this bit, but it also ignores the
* prefetchable bit too, so that's not an indication of
* correctness.
*/
if (reg & TPL_BAR_REG_BELOW1MB)
dinfo->mbelow1mb |= BARBIT(bar);
#endif
}
/*
* Sanity check the BAR length reported in the CIS with the length
* encoded in the PCI BAR. The latter seems to be more reliable.
* XXX - This probably belongs elsewhere.
*/
pci_write_config(child, bar, 0xffffffff, 4);
pci_bar = pci_read_config(child, bar, 4);
if ((pci_bar != 0x0) && (pci_bar != 0xffffffff)) {
if (type == SYS_RES_MEMORY) {
pci_bar &= ~0xf;
} else {
pci_bar &= ~0x3;
}
len = 1 << (ffs(pci_bar) - 1);
}
DEVPRINTF((cbdev, "Opening BAR: type=%s, bar=%02x, len=%04x%s%s\n",
(type == SYS_RES_MEMORY) ? "MEM" : "IO", bar, len,
(type == SYS_RES_MEMORY && dinfo->mprefetchable & BARBIT(bar)) ?
" (Prefetchable)" : "", type == SYS_RES_MEMORY ?
((dinfo->mbelow1mb & BARBIT(bar)) ? " (Below 1Mb)" : "") : ""));
resource_list_add(&dinfo->pci.resources, type, bar, 0UL, ~0UL, len);
/*
* Mark the appropriate bit in the PCI command register so that
* device drivers will know which type of BARs can be used.
*/
pci_enable_io(child, type);
return (0);
}
static int
decode_tuple_unhandled(device_t cbdev, device_t child, int id,
int len, uint8_t *tupledata, uint32_t start, uint32_t *off,
struct tuple_callbacks *info)
{
/* Make this message suck less XXX */
printf("TUPLE: %s [%d] is unhandled! Bailing...", info->name, len);
return (-1);
}
static int
decode_tuple_end(device_t cbdev, device_t child, int id,
int len, uint8_t *tupledata, uint32_t start, uint32_t *off,
struct tuple_callbacks *info)
{
if (cardbus_cis_debug) {
printf("CIS reading done\n");
}
return (0);
}
/*
* Functions to read the a tuple from the card
*/
static int
cardbus_read_tuple_conf(device_t cbdev, device_t child, uint32_t start,
uint32_t *off, int *tupleid, int *len, uint8_t *tupledata)
{
int i, j;
uint32_t e;
uint32_t loc;
loc = start + *off;
e = pci_read_config(child, loc - loc % 4, 4);
for (j = loc % 4; j > 0; j--)
e >>= 8;
*len = 0;
for (i = loc, j = -2; j < *len; j++, i++) {
if (i % 4 == 0)
e = pci_read_config(child, i, 4);
if (j == -2)
*tupleid = 0xff & e;
else if (j == -1)
*len = 0xff & e;
else
tupledata[j] = 0xff & e;
e >>= 8;
}
*off += *len + 2;
return (0);
}
static int
cardbus_read_tuple_mem(device_t cbdev, struct resource *res, uint32_t start,
uint32_t *off, int *tupleid, int *len, uint8_t *tupledata)
{
bus_space_tag_t bt;
bus_space_handle_t bh;
int ret;
bt = rman_get_bustag(res);
bh = rman_get_bushandle(res);
*tupleid = bus_space_read_1(bt, bh, start + *off);
*len = bus_space_read_1(bt, bh, start + *off + 1);
bus_space_read_region_1(bt, bh, *off + start + 2, tupledata, *len);
ret = 0;
*off += *len + 2;
return (ret);
}
static int
cardbus_read_tuple(device_t cbdev, device_t child, struct resource *res,
uint32_t start, uint32_t *off, int *tupleid, int *len,
uint8_t *tupledata)
{
if (res == (struct resource*)~0UL) {
return (cardbus_read_tuple_conf(cbdev, child, start, off,
tupleid, len, tupledata));
} else {
return (cardbus_read_tuple_mem(cbdev, res, start, off,
tupleid, len, tupledata));
}
}
static void
cardbus_read_tuple_finish(device_t cbdev, device_t child, int rid,
struct resource *res)
{
if (res != (struct resource*)~0UL) {
bus_release_resource(cbdev, SYS_RES_MEMORY, rid, res);
pci_write_config(child, rid, 0, 4);
PCI_DISABLE_IO(cbdev, child, SYS_RES_MEMORY);
}
}
static struct resource *
cardbus_read_tuple_init(device_t cbdev, device_t child, uint32_t *start,
int *rid)
{
uint32_t testval;
uint32_t size;
struct resource *res;
switch (CARDBUS_CIS_SPACE(*start)) {
case CARDBUS_CIS_ASI_TUPLE:
/* CIS in PCI config space need no initialization */
return ((struct resource*)~0UL);
case CARDBUS_CIS_ASI_BAR0:
case CARDBUS_CIS_ASI_BAR1:
case CARDBUS_CIS_ASI_BAR2:
case CARDBUS_CIS_ASI_BAR3:
case CARDBUS_CIS_ASI_BAR4:
case CARDBUS_CIS_ASI_BAR5:
*rid = CARDBUS_BASE0_REG + (CARDBUS_CIS_SPACE(*start) - 1) * 4;
break;
case CARDBUS_CIS_ASI_ROM:
*rid = CARDBUS_ROM_REG;
#if 0
/*
* This mask doesn't contain the bit that actually enables
* the Option ROM.
*/
pci_write_config(child, *rid, CARDBUS_ROM_ADDRMASK, 4);
#endif
break;
default:
device_printf(cbdev, "Unable to read CIS: Unknown space: %d\n",
CARDBUS_CIS_SPACE(*start));
return (NULL);
}
/* figure out how much space we need */
pci_write_config(child, *rid, 0xffffffff, 4);
testval = pci_read_config(child, *rid, 4);
/*
* This bit has a different meaning depending if we are dealing
* with a normal BAR or an Option ROM BAR.
*/
if (((testval & 0x1) == 0x1) && (*rid != CARDBUS_ROM_REG)) {
device_printf(cbdev, "CIS Space is IO, expecting memory.\n");
return (NULL);
}
size = CARDBUS_MAPREG_MEM_SIZE(testval);
/* XXX Is this some kind of hack? */
if (size < 4096)
size = 4096;
/* allocate the memory space to read CIS */
res = bus_alloc_resource(cbdev, SYS_RES_MEMORY, rid, 0, ~0, size,
rman_make_alignment_flags(size) | RF_ACTIVE);
if (res == NULL) {
device_printf(cbdev, "Unable to allocate resource "
"to read CIS.\n");
return (NULL);
}
pci_write_config(child, *rid,
rman_get_start(res) | ((*rid == CARDBUS_ROM_REG)?
CARDBUS_ROM_ENABLE : 0),
4);
PCI_ENABLE_IO(cbdev, child, SYS_RES_MEMORY);
/* Flip to the right ROM image if CIS is in ROM */
if (CARDBUS_CIS_SPACE(*start) == CARDBUS_CIS_ASI_ROM) {
bus_space_tag_t bt;
bus_space_handle_t bh;
uint32_t imagesize;
uint32_t imagebase = 0;
uint32_t pcidata;
uint16_t romsig;
int romnum = 0;
int imagenum;
bt = rman_get_bustag(res);
bh = rman_get_bushandle(res);
imagenum = CARDBUS_CIS_ASI_ROM_IMAGE(*start);
for (romnum = 0;; romnum++) {
romsig = bus_space_read_2(bt, bh,
imagebase + CARDBUS_EXROM_SIGNATURE);
if (romsig != 0xaa55) {
device_printf(cbdev, "Bad header in rom %d: "
"[%x] %04x\n", romnum, imagebase +
CARDBUS_EXROM_SIGNATURE, romsig);
bus_release_resource(cbdev, SYS_RES_MEMORY,
*rid, res);
*rid = 0;
return (NULL);
}
/*
* If this was the Option ROM image that we were
* looking for, then we are done.
*/
if (romnum == imagenum)
break;
/* Find out where the next Option ROM image is */
pcidata = imagebase + bus_space_read_2(bt, bh,
imagebase + CARDBUS_EXROM_DATA_PTR);
imagesize = bus_space_read_2(bt, bh,
pcidata + CARDBUS_EXROM_DATA_IMAGE_LENGTH);
if (imagesize == 0) {
/*
* XXX some ROMs seem to have this as zero,
* can we assume this means 1 block?
*/
device_printf(cbdev, "Warning, size of Option "
"ROM image %d is 0 bytes, assuming 512 "
"bytes.\n", romnum);
imagesize = 1;
}
/* Image size is in 512 byte units */
imagesize <<= 9;
if ((bus_space_read_1(bt, bh, pcidata +
CARDBUS_EXROM_DATA_INDICATOR) & 0x80) != 0) {
device_printf(cbdev, "Cannot find CIS in "
"Option ROM\n");
bus_release_resource(cbdev, SYS_RES_MEMORY,
*rid, res);
*rid = 0;
return (NULL);
}
imagebase += imagesize;
}
*start = imagebase + CARDBUS_CIS_ADDR(*start);
} else {
*start = CARDBUS_CIS_ADDR(*start);
}
return (res);
}
/*
* Dispatch the right handler function per tuple
*/
static int
decode_tuple(device_t cbdev, device_t child, int tupleid, int len,
uint8_t *tupledata, uint32_t start, uint32_t *off,
struct tuple_callbacks *callbacks)
{
int i;
for (i = 0; callbacks[i].id != CISTPL_GENERIC; i++) {
if (tupleid == callbacks[i].id)
return (callbacks[i].func(cbdev, child, tupleid, len,
tupledata, start, off, &callbacks[i]));
}
return (callbacks[i].func(cbdev, child, tupleid, len,
tupledata, start, off, NULL));
}
static int
cardbus_parse_cis(device_t cbdev, device_t child,
struct tuple_callbacks *callbacks)
{
uint8_t tupledata[MAXTUPLESIZE];
int tupleid;
int len;
int expect_linktarget;
uint32_t start, off;
struct resource *res;
int rid;
bzero(tupledata, MAXTUPLESIZE);
expect_linktarget = TRUE;
if ((start = pci_read_config(child, CARDBUS_CIS_REG, 4)) == 0)
return (ENXIO);
off = 0;
res = cardbus_read_tuple_init(cbdev, child, &start, &rid);
if (res == NULL)
return (ENXIO);
do {
if (0 != cardbus_read_tuple(cbdev, child, res, start, &off,
&tupleid, &len, tupledata)) {
device_printf(cbdev, "Failed to read CIS.\n");
cardbus_read_tuple_finish(cbdev, child, rid, res);
return (ENXIO);
}
if (expect_linktarget && tupleid != CISTPL_LINKTARGET) {
device_printf(cbdev, "Expecting link target, got 0x%x\n",
tupleid);
cardbus_read_tuple_finish(cbdev, child, rid, res);
return (EINVAL);
}
expect_linktarget = decode_tuple(cbdev, child, tupleid, len,
tupledata, start, &off, callbacks);
if (expect_linktarget != 0) {
cardbus_read_tuple_finish(cbdev, child, rid, res);
return (expect_linktarget);
}
} while (tupleid != CISTPL_END);
cardbus_read_tuple_finish(cbdev, child, rid, res);
return (0);
}
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
barsort(const void *a, const void *b)
{
return ((*(const struct resource_list_entry * const *)b)->count -
(*(const struct resource_list_entry * const *)a)->count);
}
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*), 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);
}
/*
* 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));
}
int
cardbus_do_cis(device_t cbdev, device_t child)
{
int ret;
struct tuple_callbacks init_callbacks[] = {
MAKETUPLE(LONGLINK_CB, unhandled),
MAKETUPLE(INDIRECT, unhandled),
MAKETUPLE(LONGLINK_MFC, unhandled),
MAKETUPLE(BAR, bar),
MAKETUPLE(LONGLINK_A, unhandled),
MAKETUPLE(LONGLINK_C, unhandled),
MAKETUPLE(LINKTARGET, linktarget),
MAKETUPLE(VERS_1, vers_1),
MAKETUPLE(MANFID, manfid),
MAKETUPLE(FUNCID, funcid),
MAKETUPLE(FUNCE, funce),
MAKETUPLE(END, end),
MAKETUPLE(GENERIC, generic),
};
ret = cardbus_parse_cis(cbdev, child, init_callbacks);
if (ret < 0)
return (ret);
cardbus_pickup_maps(cbdev, child);
return (cardbus_alloc_resources(cbdev, child));
}