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Better handle incorrect io ranges, it should only be fixed for PC (around 0x3f0).

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26055 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
François Revol
2008-06-21 00:35:07 +00:00
parent f43368dcbd
commit 1e4285015c
1 changed files with 18 additions and 2 deletions
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src/add-ons/kernel/drivers/disk/floppy/pc_floppy/floppy.c
+18 -2
View File
@@ -141,6 +141,8 @@ init_driver(void)
struct floppy *last = NULL;
int flops;
if ((info.config_status != B_OK) ||
((info.flags & B_DEVICE_INFO_ENABLED) == 0) ||
((info.flags & B_DEVICE_INFO_CONFIGURED) == 0) ||
(info.devtype.base != PCI_mass_storage) ||
(info.devtype.subtype != PCI_floppy) ||
(info.devtype.interface != 0) /* XXX: needed ?? */)
@@ -157,8 +159,9 @@ init_driver(void)
}
master = &(floppies[current]);
for (i = 0; i < conf->num_resources; i++) {
if (conf->resources[i].type == B_IO_PORT_RESOURCE)
master->iobase = conf->resources[i].d.r.minbase & 0x0FFF8;
if (conf->resources[i].type == B_IO_PORT_RESOURCE) {
int32 iobase = conf->resources[i].d.r.minbase;
int32 len = conf->resources[i].d.r.len;
/* WTF do I get
* min 3f2 max 3f2 align 0 len 4 ?
* on my K6-2, I even get 2 bytes at 3f2 + 2 bytes at 3f4 !
@@ -166,6 +169,19 @@ init_driver(void)
* answer: because the 8th byte is also for the IDE controller...
* good old PC stuff... PPC here I come !
*/
// XXX: maybe we shouldn't use DIGITAL_IN if register window
// is only 6 bytes ?
if (len != 8) {
if ((master->iobase & 0xfffffff8) == 0x3f0)
iobase = 0x3f0;
else {
dprintf(FLO "controller has weird register window len %ld !?\n",
len);
break;
}
}
master->iobase = iobase;
}
if (conf->resources[i].type == B_IRQ_RESOURCE) {
int val;
for (val = 0; val < 32; val++) {