From b9eda7c38c67b115c9a3b2706938972fe6adac5d Mon Sep 17 00:00:00 2001
From: Jason Wright <jason@cvs.openbsd.org>
Date: Mon, 15 Apr 2002 17:43:31 +0000
Subject: Since XFree doesn't try to remap things behind our backs anymore,
 simplify the driver a bit (mainly don't reprobe the pci address for every
 call to vgafb_mmap()).

---
 sys/arch/sparc64/dev/vgafb.c | 34 ++++++++++++----------------------
 1 file changed, 12 insertions(+), 22 deletions(-)

diff --git a/sys/arch/sparc64/dev/vgafb.c b/sys/arch/sparc64/dev/vgafb.c
index 59e7f3947e8..7a149be7188 100644
--- a/sys/arch/sparc64/dev/vgafb.c
+++ b/sys/arch/sparc64/dev/vgafb.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: vgafb.c,v 1.16 2002/04/08 17:49:42 jason Exp $	*/
+/*	$OpenBSD: vgafb.c,v 1.17 2002/04/15 17:43:30 jason Exp $	*/
 
 /*
  * Copyright (c) 2001 Jason L. Wright (jason@thought.net)
@@ -70,8 +70,6 @@ struct vgafb_softc {
 	bus_addr_t sc_io_addr, sc_mem_addr, sc_mmio_addr, sc_rom_addr;
 	bus_size_t sc_io_size, sc_mem_size, sc_mmio_size, sc_rom_size;
 	pci_chipset_tag_t sc_pci_chip;
-	pcitag_t sc_pci_tag;
-	int sc_io_cf, sc_mmio_cf, sc_mem_cf;
 	u_int8_t *sc_rom_ptr;
 	int sc_has_rom;
 	struct rcons sc_rcons;
@@ -180,8 +178,8 @@ vgafbattach(parent, self, aux)
 	struct wsemuldisplaydev_attach_args waa;
 	long defattr;
 
-	sc->sc_pci_chip = pa->pa_pc;
-	sc->sc_pci_tag = pa->pa_tag;
+	sc->sc_mem_t = pa->pa_memt;
+	sc->sc_io_t = pa->pa_iot;
 	sc->sc_node = PCITAG_NODE(pa->pa_tag);
 
 	sc->sc_depth = getpropint(sc->sc_node, "depth", -1);
@@ -424,8 +422,6 @@ vgafb_mmap(v, off, prot)
 	int prot;
 {
 	struct vgafb_softc *sc = v;
-	bus_addr_t ba;
-	bus_size_t bs;
 	paddr_t pa;
 	vaddr_t va;
 
@@ -434,16 +430,16 @@ vgafb_mmap(v, off, prot)
 
 	switch (sc->sc_mode) {
 	case WSDISPLAYIO_MODE_MAPPED:
-		if ((pci_mem_find(sc->sc_pci_chip, sc->sc_pci_tag,
-		    sc->sc_mem_cf, &ba, &bs, NULL) == 0) &&
-		    (off >= ba) && (off < (ba + bs)))
-			return (bus_space_mmap(sc->sc_mem_t, ba, off - ba,
+		if (off >= sc->sc_mem_addr &&
+		    off < (sc->sc_mem_addr + sc->sc_mem_size))
+			return (bus_space_mmap(sc->sc_mem_t,
+			    sc->sc_mem_addr, off - sc->sc_mem_addr,
 			    prot, BUS_SPACE_MAP_LINEAR));
 
-		if ((pci_mem_find(sc->sc_pci_chip, sc->sc_pci_tag,
-		    sc->sc_mmio_cf, &ba, &bs, NULL) == 0) &&
-		    (off >= ba) && (off < (ba + bs)))
-			return (bus_space_mmap(sc->sc_mem_t, ba, off - ba,
+		if (off >= sc->sc_mmio_addr &&
+		    off < (sc->sc_mmio_addr + sc->sc_mmio_size))
+			return (bus_space_mmap(sc->sc_mem_t,
+			    sc->sc_mmio_addr, off - sc->sc_mmio_addr,
 			    prot, BUS_SPACE_MAP_LINEAR));
 
 		if (sc->sc_rom_ptr != NULL &&
@@ -599,10 +595,9 @@ vgafb_mapregs(sc, pa)
 				printf(": can't map io space\n");
 				continue;
 			}
-			sc->sc_io_cf = i;
 			hasio = 1;
 		} else {
-			/* Memory mapping... framebuffer or mmio? */
+			/* Memory mapping... frame memory or mmio? */
 			if (pci_mem_find(pa->pa_pc, pa->pa_tag, i,
 			    &ba, &bs, NULL)) {
 				printf(": failed to find mem at 0x%x\n", i);
@@ -619,7 +614,6 @@ vgafb_mapregs(sc, pa)
 				}
 				sc->sc_mmio_addr = ba;
 				sc->sc_mmio_size = bs;
-				sc->sc_mmio_cf = i;
 				hasmmio = 1;
 			} else {
 				if (hasmem)
@@ -632,7 +626,6 @@ vgafb_mapregs(sc, pa)
 				}
 				sc->sc_mem_addr = ba;
 				sc->sc_mem_size = bs;
-				sc->sc_mem_cf = i;
 				hasmem = 1;
 			}
 		}
@@ -643,9 +636,6 @@ vgafb_mapregs(sc, pa)
 		goto fail;
 	}
 
-	sc->sc_mem_t = pa->pa_memt;
-	sc->sc_io_t = pa->pa_iot;
-
 	return (0);
 
 fail:
-- 
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