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Improved debugging output

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This commit is contained in:
Michael Brown
2005-04-16 10:19:13 +00:00
parent ed7b9109be
commit e1a9798af4
3 changed files with 27 additions and 7 deletions
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18
src/drivers/bus/mca.c
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@@ -22,7 +22,7 @@ static char mca_magic[0]; /* guaranteed unique symbol */
*
*/
static int fill_mca_device ( struct mca_device *mca ) {
unsigned int i;
unsigned int i, seen_non_ff;
/* Make sure motherboard setup is off */
outb_p ( 0xff, MCA_MOTHERBOARD_SETUP_REG );
@@ -31,10 +31,19 @@ static int fill_mca_device ( struct mca_device *mca ) {
outb_p ( 0x8 | ( mca->slot & 0xf ), MCA_ADAPTER_SETUP_REG );
/* Read the POS registers */
seen_non_ff = 0;
for ( i = 0 ; i < ( sizeof ( mca->pos ) / sizeof ( mca->pos[0] ) ) ;
i++ ) {
mca->pos[i] = inb_p ( MCA_POS_REG ( i ) );
if ( mca->pos[i] != 0xff )
seen_non_ff = 1;
}
/* If all POS registers are 0xff, this means there's no device
* present
*/
if ( ! seen_non_ff )
return 0;
/* Kill all setup modes */
outb_p ( 0, MCA_ADAPTER_SETUP_REG );
@@ -64,6 +73,7 @@ int find_mca_device ( struct mca_device *mca, struct mca_driver *driver ) {
/* Iterate through all possible MCA slots, starting where we
* left off
*/
DBG ( "MCA searching for device matching driver %s\n", driver->name );
for ( ; mca->slot < MCA_MAX_SLOT_NR ; mca->slot++ ) {
/* If we've already used this device, skip it */
if ( mca->already_tried ) {
@@ -81,8 +91,9 @@ int find_mca_device ( struct mca_device *mca, struct mca_driver *driver ) {
struct mca_id *id = &driver->ids[i];
if ( MCA_ID ( mca ) == id->id ) {
DBG ( "Device %s (driver %s) matches ID %hx\n",
id->name, driver->name, id->id );
DBG ( "MCA found ID %hx (device %s) "
"matching driver %s\n",
id->name, id->id, driver->name );
mca->name = id->name;
mca->already_tried = 1;
return 1;
@@ -91,6 +102,7 @@ int find_mca_device ( struct mca_device *mca, struct mca_driver *driver ) {
}
/* No device found */
DBG ( "MCA found no device matching driver %s\n", driver->name );
mca->slot = 0;
return 0;
}