[src/trunk]: src/sys/arch/sgimips/mace on mips64 we can use the whole PCI spa...

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

details:   https://anonhg.NetBSD.org/src/rev/588f0b9ba515
branches:  trunk
changeset: 340692:588f0b9ba515
user:      macallan <macallan%NetBSD.org@localhost>
date:      Thu Sep 24 17:56:59 2015 +0000

description:
on mips64 we can use the whole PCI space, not just the two 32MB windows
accessible via KSEG*

diffstat:

 sys/arch/sgimips/mace/pci_mace.c |  28 +++++++++++++++++++---------
 1 files changed, 19 insertions(+), 9 deletions(-)

diffs (84 lines):

diff -r cea671811135 -r 588f0b9ba515 sys/arch/sgimips/mace/pci_mace.c
--- a/sys/arch/sgimips/mace/pci_mace.c  Thu Sep 24 16:37:09 2015 +0000
+++ b/sys/arch/sgimips/mace/pci_mace.c  Thu Sep 24 17:56:59 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pci_mace.c,v 1.18 2015/02/18 16:47:59 macallan Exp $   */
+/*     $NetBSD: pci_mace.c,v 1.19 2015/09/24 17:56:59 macallan Exp $   */
 
 /*
  * Copyright (c) 2001,2003 Christopher Sekiya
@@ -34,7 +34,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pci_mace.c,v 1.18 2015/02/18 16:47:59 macallan Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pci_mace.c,v 1.19 2015/09/24 17:56:59 macallan Exp $");
 
 #include "opt_pci.h"
 #include "pci.h"
@@ -65,6 +65,11 @@
 
 #include <sgimips/mace/pcireg_mace.h>
 
+#ifndef __mips_o32
+#define USE_HIGH_PCI
+#endif
+
+
 struct macepci_softc {
        struct sgimips_pci_chipset sc_pc;
 };
@@ -156,15 +161,23 @@
        bus_space_write_4(pc->iot, pc->ioh, MACEPCI_CONTROL, control);
 
 #if NPCI > 0
+#ifdef USE_HIGH_PCI
        pc->pc_ioext = extent_create("macepciio", 0x00001000, 0x01ffffff,
            NULL, 0, EX_NOWAIT);
+       pc->pc_memext = extent_create("macepcimem", 0x80000000, 0xffffffff,
+           NULL, 0, EX_NOWAIT);
+#else
+       pc->pc_ioext = extent_create("macepciio", 0x00001000, 0x01ffffff,
+           NULL, 0, EX_NOWAIT);
+       /* XXX no idea why we limit ourselves to only half of the 32MB window */
        pc->pc_memext = extent_create("macepcimem", 0x80100000, 0x81ffffff,
            NULL, 0, EX_NOWAIT);
+#endif /* USE_HIGH_PCI */
        pci_configure_bus(pc, pc->pc_ioext, pc->pc_memext, NULL, 0,
            mips_cache_info.mci_dcache_align);
        memset(&pba, 0, sizeof pba);
-/*XXX*/        pba.pba_iot = mace_pci_iot;
-/*XXX*/        pba.pba_memt = mace_pci_memt;
+       pba.pba_iot = mace_pci_iot;
+       pba.pba_memt = mace_pci_memt;
        pba.pba_dmat = &pci_bus_dma_tag;
        pba.pba_dmat64 = NULL;
        pba.pba_bus = 0;
@@ -209,9 +222,6 @@
 void
 macepci_conf_write(pci_chipset_tag_t pc, pcitag_t tag, int reg, pcireg_t data)
 {
-       /* XXX O2 soren */
-       if (tag == 0)
-               return;
 
        bus_space_write_4(pc->iot, pc->ioh, MACE_PCI_CONFIG_ADDR, (tag | reg));
        bus_space_write_4(pc->iot, pc->ioh, MACE_PCI_CONFIG_DATA, data);
@@ -377,7 +387,7 @@
  */
 #define        CHIP_W1_BUS_START(v)    0x80000000UL
 #define CHIP_W1_BUS_END(v)     0xffffffffUL
-#ifdef _LP64
+#ifdef USE_HIGH_PCI
 #define        CHIP_W1_SYS_START(v)    MACE_PCI_HI_MEMORY
 #define        CHIP_W1_SYS_END(v)      MACE_PCI_HI_MEMORY + 0x7fffffffUL
 #else
@@ -402,7 +412,7 @@
 #define        CHIP_MEM                /* defined */
 #define        CHIP_W1_BUS_START(v)    0x00000000UL
 #define CHIP_W1_BUS_END(v)     0xffffffffUL
-#ifdef _LP64
+#ifdef USE_HIGH_PCI
 #define        CHIP_W1_SYS_START(v)    MACE_PCI_HI_IO
 #define        CHIP_W1_SYS_END(v)      MACE_PCI_HI_IO + 0xffffffffUL
 #else