ISA bus driver updated to report devices as present only if a driver

thinks they are.
Other bus drivers modified for consistency.

src/include/dev.h

@@ -28,7 +28,7 @@ struct device_driver;
  * A physical device location on a bus.
  *
  */
-#define BUS_LOC_SIZE 4
+#define BUS_LOC_SIZE 8
 struct bus_loc {
 	char bytes[BUS_LOC_SIZE];
 };

src/include/eisa.h

@@ -66,10 +66,11 @@ struct eisa_driver {
  * Define an EISA driver
  *
  */
-#define EISA_DRIVER( _ids ) {					\
-	.ids = _ids,						\
-	.id_count = sizeof ( _ids ) / sizeof ( _ids[0] ),	\
-}
+#define EISA_DRIVER( _name, _ids ) 					\
+	static struct eisa_driver _name = {				\
+		.ids = _ids,						\
+		.id_count = sizeof ( _ids ) / sizeof ( _ids[0] ),	\
+	}
 
 /*
  * Functions in eisa.c

src/include/isa.h

@@ -9,10 +9,11 @@
  * A location on an ISA bus
  *
  */
+struct isa_driver;
 struct isa_loc {
+	unsigned int driver;
 	unsigned int probe_idx;
 };
-#define ISA_MAX_PROBE_IDX	255 /* Unlikely to ever be more than ~20 */
 
 /*
  * A physical ISA device
@@ -20,7 +21,7 @@ struct isa_loc {
  */
 struct isa_device {
 	const char *name;
-	unsigned int driver_probe_idx;
+	struct isa_driver *driver;
 	uint16_t ioaddr;
 	uint16_t mfg_id;
 	uint16_t prod_id;
@@ -47,12 +48,14 @@ struct isa_driver {
 	uint16_t mfg_id;
 	uint16_t prod_id;
 };
+#define __isa_driver __attribute__ (( section ( ".drivers.isa" ) ))
 
 /*
  * Define an ISA driver
  *
  */
-#define ISA_DRIVER( _probe_addrs, _probe_addr, _mfg_id, _prod_id ) {	    \
+#define ISA_DRIVER( _name, _probe_addrs, _probe_addr, _mfg_id, _prod_id )   \
+static struct isa_driver _name __isa_driver = {				    \
 	.probe_addrs = _probe_addrs,					    \
 	.addr_count = sizeof ( _probe_addrs ) / sizeof ( _probe_addrs[0] ), \
 	.probe_addr = _probe_addr,					    \

src/include/isapnp.h

@@ -200,10 +200,11 @@ struct isapnp_driver {
  * Define an ISAPnP driver
  *
  */
-#define ISAPNP_DRIVER( _ids ) {					\
-	.ids = _ids,						\
-	.id_count = sizeof ( _ids ) / sizeof ( _ids[0] ),	\
-}
+#define ISAPNP_DRIVER( _name, _ids ) 					\
+	static struct isapnp_driver _name = {				\
+		.ids = _ids,						\
+		.id_count = sizeof ( _ids ) / sizeof ( _ids[0] ),	\
+	}
 
 /*
  * Functions in isapnp.c

src/include/mca.h

@@ -67,10 +67,11 @@ struct mca_driver {
  * Define an MCA driver
  *
  */
-#define MCA_DRIVER( _ids ) {					\
-	.ids = _ids,						\
-	.id_count = sizeof ( _ids ) / sizeof ( _ids[0] ),	\
-}
+#define MCA_DRIVER( _name, _ids )					\
+	static struct mca_driver _name = {				\
+		.ids = _ids,						\
+		.id_count = sizeof ( _ids ) / sizeof ( _ids[0] ),	\
+	}
 
 /*
  * Functions in mca.c

src/include/pci.h

@@ -307,7 +307,8 @@ struct pci_driver {
  * Define a PCI driver.
  *
  */
-#define PCI_DRIVER( _ids, _class ) {					\
+#define PCI_DRIVER( _name, _ids, _class ) 				\
+	static struct pci_driver _name = {				\
 		.ids = _ids,						\
 		.id_count = sizeof ( _ids ) / sizeof ( _ids[0] ),	\
 		.class = _class,					\