[src/trunk]: src/sys/dev/pci fix the fix(es) - don't try to access a BIOS we ...

[macallan <macallan%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/05f2429f34f8
branches:  trunk
changeset: 997825:05f2429f34f8
user:      macallan <macallan%NetBSD.org@localhost>
date:      Wed Mar 27 22:00:33 2019 +0000

description:
fix the fix(es) - don't try to access a BIOS we didn't find.
Now this works on sparc64 again.

diffstat:

 sys/dev/pci/radeonfb.c |  27 ++++++++++++---------------
 1 files changed, 12 insertions(+), 15 deletions(-)

diffs (76 lines):

diff -r eb9565697da5 -r 05f2429f34f8 sys/dev/pci/radeonfb.c
--- a/sys/dev/pci/radeonfb.c    Wed Mar 27 21:14:54 2019 +0000
+++ b/sys/dev/pci/radeonfb.c    Wed Mar 27 22:00:33 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: radeonfb.c,v 1.103 2019/03/22 07:41:41 martin Exp $ */
+/*     $NetBSD: radeonfb.c,v 1.104 2019/03/27 22:00:33 macallan Exp $ */
 
 /*-
  * Copyright (c) 2006 Itronix Inc.
@@ -70,7 +70,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: radeonfb.c,v 1.103 2019/03/22 07:41:41 martin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: radeonfb.c,v 1.104 2019/03/27 22:00:33 macallan Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -478,6 +478,8 @@
        sc->sc_pc = pa->pa_pc;
        sc->sc_family = radeonfb_devices[i].family;
        sc->sc_flags = radeonfb_devices[i].flags;
+       sc->sc_bios = NULL;
+       sc->sc_biossz = 0;
 
        /* enable memory and IO access */
        screg = pci_conf_read(sc->sc_pc, sc->sc_pt, PCI_COMMAND_STATUS_REG);
@@ -1402,9 +1404,6 @@
        pci_find_rom(pa, romt, romh, romsz, PCI_ROM_CODE_TYPE_X86, &biosh,
            &sc->sc_biossz);
 
-       if (sc->sc_biossz == 0 || sc->sc_bios == NULL)
-               return;
-
 foundit:
        if (sc->sc_biossz > 0) {
                sc->sc_bios = malloc(sc->sc_biossz, M_DEVBUF, M_WAITOK);
@@ -1431,15 +1430,13 @@
            pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM) &
            ~PCI_MAPREG_ROM_ENABLE);
 
-       DPRINTF(("BIOS %08x\n", *(uint32_t *)sc->sc_bios));
-
-       ptr = GETBIOS16(sc, 0x48);
-       if ((GETBIOS32(sc, ptr + 4) == 0x41544f4d /* "ATOM" */) ||
-           (GETBIOS32(sc, ptr + 4) == 0x4d4f5441 /* "MOTA" */)) {
-               sc->sc_flags |= RFB_ATOM;
-       }
-
        if (sc->sc_biossz > 0) {
+               ptr = GETBIOS16(sc, 0x48);
+               if ((GETBIOS32(sc, ptr + 4) == 0x41544f4d /* "ATOM" */) ||
+                   (GETBIOS32(sc, ptr + 4) == 0x4d4f5441 /* "MOTA" */)) {
+                       sc->sc_flags |= RFB_ATOM;
+               }
+
                aprint_verbose("%s: Found %d KB %s BIOS\n", XNAME(sc),
                    (unsigned)sc->sc_biossz >> 10,
                    IS_ATOM(sc) ? "ATOM" : "Legacy");
@@ -1928,14 +1925,14 @@
                        sc->sc_ports[0].rp_dac_type = RADEON_DAC_TVDAC;
                        sc->sc_ports[0].rp_conn_type = RADEON_CONN_DVI_D;
                        sc->sc_ports[0].rp_tmds_type = RADEON_TMDS_INT;
-                       sc->sc_ports[0].rp_number = 1;
+                       sc->sc_ports[0].rp_number = 0;
 
                        sc->sc_ports[1].rp_mon_type = RADEON_MT_UNKNOWN;
                        sc->sc_ports[1].rp_ddc_type = RADEON_DDC_VGA;
                        sc->sc_ports[1].rp_dac_type = RADEON_DAC_PRIMARY;
                        sc->sc_ports[1].rp_conn_type = RADEON_CONN_CRT;
                        sc->sc_ports[1].rp_tmds_type = RADEON_TMDS_UNKNOWN;
-                       sc->sc_ports[1].rp_number = 0;
+                       sc->sc_ports[1].rp_number = 1;
                }
        }