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When in rev. 1.47 cardbus_alloc_resources() function was moved from

Browse source 
cardbus_cis.c to this file, some code was not merged and thus resource
list entries were invalid. They didn't have a resources attached to
them.
  However, the problem was masked for some time later, because newer
resources list entries were added to the head of the list, and
resource_list_find() always returned the first matching resource list
entry. Usually the underlying driver allocated a valid resource and
added it to the head of the list, and invalid one wasn't used.
  In rev. 1.174 of subr_bus.c the sorting of resource list entries was
reversed demasking the problem in cardbus_alloc_resources().
  This commit fixes the problem returning back some code from
cardbus_cis.c, pre-1.49 revisions.

PR:			kern/87114
PR:			kern/90441
Hardware provided by:	Vasily Olekhov <olekhov yandex.ru>
Reviewed by:		imp
This commit is contained in:
Gleb Smirnoff 2005-12-28 10:15:01 +00:00
parent fc9fac4c78
commit 086745614c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=153788
1 changed files with 40 additions and 15 deletions
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55
sys/dev/cardbus/cardbus.c
View file

@ -149,14 +149,6 @@ cardbus_pickup_maps(device_t cbdev, device_t child)
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)
{
@ -249,8 +241,16 @@ cardbus_alloc_resources(device_t cbdev, device_t child)
rle = barlist[tmp];
if (rle->type == SYS_RES_MEMORY &&
dinfo->mprefetchable & BARBIT(rle->rid)) {
cardbus_do_res(rle, child, start);
start += rle->count;
rle->res = bus_alloc_resource(cbdev,
rle->type, &rle->rid, start, end,
rle->count,
rman_make_alignment_flags(rle->count));
if (rle->res != NULL) {
rle->start = rman_get_start(rle->res);
rle->end = rman_get_end(rle->res);
pci_write_config(child,
rle->rid, rle->start, 4);
}
}
}
}
@ -297,8 +297,20 @@ cardbus_alloc_resources(device_t cbdev, device_t child)
rle = barlist[tmp];
if (rle->type == SYS_RES_MEMORY &&
(dinfo->mprefetchable & BARBIT(rle->rid)) == 0) {
cardbus_do_res(rle, child, start);
start += rle->count;
rle->res = bus_alloc_resource(cbdev,
rle->type, &rle->rid, start, end,
rle->count,
rman_make_alignment_flags(rle->count));
if (rle->res == NULL) {
DEVPRINTF((cbdev, "Cannot pre-allocate "
"memory for cardbus device\n"));
free(barlist, M_DEVBUF);
return (ENOMEM);
}
rle->start = rman_get_start(rle->res);
rle->end = rman_get_end(rle->res);
pci_write_config(child,
rle->rid, rle->start, 4);
}
}
}
@ -341,8 +353,20 @@ cardbus_alloc_resources(device_t cbdev, device_t child)
for (tmp = 0; tmp < count; tmp++) {
rle = barlist[tmp];
if (rle->type == SYS_RES_IOPORT) {
cardbus_do_res(rle, child, start);
start += rle->count;
rle->res = bus_alloc_resource(cbdev,
rle->type, &rle->rid, start, end,
rle->count,
rman_make_alignment_flags(rle->count));
if (rle->res == NULL) {
DEVPRINTF((cbdev, "Cannot pre-allocate "
"IO port for cardbus device\n"));
free(barlist, M_DEVBUF);
return (ENOMEM);
}
rle->start = rman_get_start(rle->res);
rle->end = rman_get_end(rle->res);
pci_write_config(child,
rle->rid, rle->start, 4);
}
}
}
@ -357,9 +381,10 @@ cardbus_alloc_resources(device_t cbdev, device_t child)
}
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);
rle = resource_list_find(&dinfo->pci.resources, SYS_RES_IRQ, rid);
rle->res = res;
dinfo->pci.cfg.intline = start;
pci_write_config(child, PCIR_INTLINE, start, 1);