Do not disable the ISA compatibility window if it is the same value as

that set for our PCI IO address space.  This can happen on the BT-946.

1 files changed, 13 insertions, 8 deletions

diff --git a/sys/pci/bt_pci.c b/sys/pci/bt_pci.c
index 0286245..302be46 100644
--- a/sys/pci/bt_pci.c
+++ b/sys/pci/bt_pci.c
@@ -26,7 +26,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id$
+ *	$Id: bt_pci.c,v 1.1 1998/09/15 07:32:57 gibbs Exp $
  */
 
 #include "pci.h"
@@ -110,7 +110,6 @@ bt_pci_probe (pcici_t config_id, pcidi_t type)
 		        bus_space_handle_t bsh;
 			pci_info_data_t pci_info;
 			int error;
-			u_int8_t new_addr;
 
 			if (btpcideterminebusspace(config_id, &tag, &bsh) != 0)
 				break;
@@ -122,7 +121,8 @@ bt_pci_probe (pcici_t config_id, pcidi_t type)
 			/*
 			 * Determine if an ISA compatible I/O port has been
 			 * enabled.  If so, record the port so it will not
-			 * be probed by our ISA probe, and disable the port.
+			 * be probed by our ISA probe.  If the PCI I/O port
+			 * was not set to the compatibility port, disable it.
 			 */
 			error = bt_cmd(bt, BOP_INQUIRE_PCI_INFO,
 				       /*param*/NULL, /*paramlen*/0,
@@ -131,12 +131,17 @@ bt_pci_probe (pcici_t config_id, pcidi_t type)
 			if (error == 0
 			 && pci_info.io_port < BIO_DISABLED) {
 				bt_mark_probed_bio(pci_info.io_port);
+				if (bsh != bt_fetch_isa_iop(pci_info.io_port)) {
+					u_int8_t new_addr;
+
+					new_addr = BIO_DISABLED;
+					bt_cmd(bt, BOP_MODIFY_IO_ADDR,
+					       /*param*/&new_addr,
+					       /*paramlen*/1, /*reply_buf*/NULL,
+					       /*reply_len*/0,
+					       DEFAULT_CMD_TIMEOUT);
+				}
 			}
-
-			new_addr = BIO_DISABLED;
-			bt_cmd(bt, BOP_MODIFY_IO_ADDR, /*param*/&new_addr,
-			       /*paramlen*/1, /*reply_buf*/NULL, /*reply_len*/0,
-			       DEFAULT_CMD_TIMEOUT);
 			bt_free(bt);
 			return ("Buslogic Multimaster SCSI host adapter");
 			break;