[src/sommerfeld_i386mp_1]: src/sys/arch/i386/include Let machine-dependent co...

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

details:   https://anonhg.NetBSD.org/src/rev/e853db36aa6f
branches:  sommerfeld_i386mp_1
changeset: 482529:e853db36aa6f
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Wed May 15 19:23:55 2002 +0000

description:
Let machine-dependent code specify how to enumerate the bus.
Currently, everyone uses pci_enumerate_bus_generic().

diffstat:

 sys/arch/i386/include/pci_machdep.h |  116 ++++++++++++++++++++++++++++++++++++
 1 files changed, 116 insertions(+), 0 deletions(-)

diffs (120 lines):

diff -r 301aa53784eb -r e853db36aa6f sys/arch/i386/include/pci_machdep.h
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/i386/include/pci_machdep.h       Wed May 15 19:23:55 2002 +0000
@@ -0,0 +1,116 @@
+/*     $NetBSD: pci_machdep.h,v 1.18.4.2 2002/05/15 19:23:55 thorpej Exp $     */
+
+/*
+ * Copyright (c) 1996 Christopher G. Demetriou.  All rights reserved.
+ * Copyright (c) 1994 Charles M. Hannum.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by Charles M. Hannum.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * Machine-specific definitions for PCI autoconfiguration.
+ */
+#define        __HAVE_PCIIDE_MACHDEP_COMPAT_INTR_ESTABLISH
+
+/*
+ * Many i386 PCI systems only work properly with I/O mapped space, in
+ * particular, buses behind PCI-PCI bridges may not have memory
+ * space mapped at all.  For this reason, tell drivers that have
+ * a choice that we "prefer" I/O space.
+ */
+#define        PCI_PREFER_IOSPACE
+
+/*
+ * i386-specific PCI structure and type definitions.
+ * NOT TO BE USED DIRECTLY BY MACHINE INDEPENDENT CODE.
+ *
+ * Configuration tag; created from a {bus,device,function} triplet by
+ * pci_make_tag(), and passed to pci_conf_read() and pci_conf_write().
+ * We could instead always pass the {bus,device,function} triplet to
+ * the read and write routines, but this would cause extra overhead.
+ *
+ * Mode 2 is historical and deprecated by the Revision 2.0 specification.
+ */
+union i386_pci_tag_u {
+       u_int32_t mode1;
+       struct {
+               u_int16_t port;
+               u_int8_t enable;
+               u_int8_t forward;
+       } mode2;
+};
+
+extern struct i386_bus_dma_tag pci_bus_dma_tag;
+
+/*
+ * Types provided to machine-independent PCI code
+ */
+typedef void *pci_chipset_tag_t;
+typedef union i386_pci_tag_u pcitag_t;
+typedef int pci_intr_handle_t;
+
+/*
+ * i386-specific PCI variables and functions.
+ * NOT TO BE USED DIRECTLY BY MACHINE INDEPENDENT CODE.
+ */
+extern int pci_mode;
+int            pci_mode_detect(void);
+int            pci_bus_flags(void);
+struct         pci_attach_args;
+
+/*
+ * Functions provided to machine-independent PCI code.
+ */
+void           pci_attach_hook(struct device *, struct device *,
+                   struct pcibus_attach_args *);
+int            pci_bus_maxdevs(pci_chipset_tag_t, int);
+pcitag_t       pci_make_tag(pci_chipset_tag_t, int, int, int);
+void           pci_decompose_tag(pci_chipset_tag_t, pcitag_t,
+                   int *, int *, int *);
+pcireg_t       pci_conf_read(pci_chipset_tag_t, pcitag_t, int);
+void           pci_conf_write(pci_chipset_tag_t, pcitag_t, int,
+                   pcireg_t);
+int            pci_intr_map(struct pci_attach_args *, pci_intr_handle_t *);
+const char     *pci_intr_string(pci_chipset_tag_t, pci_intr_handle_t);
+const struct evcnt *pci_intr_evcnt(pci_chipset_tag_t, pci_intr_handle_t);
+void           *pci_intr_establish(pci_chipset_tag_t, pci_intr_handle_t,
+                   int, int (*)(void *), void *);
+void           pci_intr_disestablish(pci_chipset_tag_t, void *);
+
+#define        pci_enumerate_bus(sc, m, p)                                     \
+       pci_enumerate_bus_generic((sc), (m), (p))
+
+/*
+ * ALL OF THE FOLLOWING ARE MACHINE-DEPENDENT, AND SHOULD NOT BE USED
+ * BY PORTABLE CODE.
+ */
+
+/*
+ * Section 6.2.4, `Miscellaneous Functions' of the PCI Specification,
+ * says that 255 means `unknown' or `no connection' to the interrupt
+ * controller on a PC.
+ */
+#define        I386_PCI_INTERRUPT_LINE_NO_CONNECTION   0xff