Use dcr_host_t.base in ibm_emac_mal

This requires us to do a sort-of fake dcr_map(), so that base is set
properly. This will be fixed/removed when the device-tree-aware emac driver
is merged.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/net/ibm_emac/ibm_emac_mal.c

@@ -413,7 +413,10 @@ static int __init mal_probe(struct ocp_device *ocpdev)
 		       ocpdev->def->index);
 		return -ENOMEM;
 	}
-	mal->dcrbase = maldata->dcr_base;
+
+	/* XXX This only works for native dcr for now */
+	mal->dcrhost = dcr_map(NULL, maldata->dcr_base, 0);
+
 	mal->def = ocpdev->def;
 
 	INIT_LIST_HEAD(&mal->poll_list);

drivers/net/ibm_emac/ibm_emac_mal.h

@@ -191,7 +191,6 @@ struct mal_commac {
 };
 
 struct ibm_ocp_mal {
-	int			dcrbase;
 	dcr_host_t		dcrhost;
 
 	struct list_head	poll_list;
@@ -209,12 +208,12 @@ struct ibm_ocp_mal {
 
 static inline u32 get_mal_dcrn(struct ibm_ocp_mal *mal, int reg)
 {
-	return dcr_read(mal->dcrhost, mal->dcrbase + reg);
+	return dcr_read(mal->dcrhost, mal->dcrhost.base + reg);
 }
 
 static inline void set_mal_dcrn(struct ibm_ocp_mal *mal, int reg, u32 val)
 {
-	dcr_write(mal->dcrhost, mal->dcrbase + reg, val);
+	dcr_write(mal->dcrhost, mal->dcrhost.base + reg, val);
 }
 
 /* Register MAL devices */