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[src/trunk]: src/sys/arch/arm Add support for decoding PCI ID mappings using ...
details: https://anonhg.NetBSD.org/src/rev/919acb490916
branches: trunk
changeset: 446506:919acb490916
user: jmcneill <jmcneill%NetBSD.org@localhost>
date: Sat Dec 08 15:04:40 2018 +0000
description:
Add support for decoding PCI ID mappings using IO remapping tables (IORT).
diffstat:
sys/arch/arm/acpi/acpi_iort.c | 110 +++++++++++++++++++++++++++++++++++
sys/arch/arm/acpi/acpi_iort.h | 37 +++++++++++
sys/arch/arm/acpi/acpi_pci_machdep.c | 15 ++++-
sys/arch/arm/acpi/files.acpi | 3 +-
sys/arch/arm/cortex/gicv3_its.c | 9 +-
sys/arch/arm/include/pci_machdep.h | 5 +-
6 files changed, 172 insertions(+), 7 deletions(-)
diffs (289 lines):
diff -r e518f5d845cc -r 919acb490916 sys/arch/arm/acpi/acpi_iort.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/arm/acpi/acpi_iort.c Sat Dec 08 15:04:40 2018 +0000
@@ -0,0 +1,110 @@
+/* $NetBSD: acpi_iort.c,v 1.1 2018/12/08 15:04:40 jmcneill Exp $ */
+
+/*-
+ * Copyright (c) 2018 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jared McNeill <jmcneill%invisible.ca@localhost>.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``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 FOUNDATION OR CONTRIBUTORS
+ * 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.
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: acpi_iort.c,v 1.1 2018/12/08 15:04:40 jmcneill Exp $");
+
+#include <sys/param.h>
+#include <sys/bus.h>
+#include <sys/cpu.h>
+
+#include <dev/acpi/acpireg.h>
+#include <dev/acpi/acpivar.h>
+
+#include <arm/acpi/acpi_iort.h>
+
+static ACPI_IORT_ID_MAPPING *
+acpi_iort_id_map(ACPI_IORT_NODE *node, uint32_t *id)
+{
+ ACPI_IORT_ID_MAPPING *map;
+ uint32_t offset, n;
+
+ offset = node->MappingOffset;
+ for (n = 0; n < node->MappingCount; n++) {
+ map = ACPI_ADD_PTR(ACPI_IORT_ID_MAPPING, node, offset);
+ if (map->Flags & ACPI_IORT_ID_SINGLE_MAPPING) {
+ *id = map->InputBase;
+ return map;
+ }
+ if (*id >= map->InputBase && *id <= map->InputBase + map->IdCount) {
+ *id = *id - map->InputBase + map->OutputBase;
+ return map;
+ }
+ offset += sizeof(ACPI_IORT_ID_MAPPING);
+ }
+
+ return NULL;
+}
+
+static ACPI_IORT_NODE *
+acpi_iort_find_ref(ACPI_TABLE_IORT *iort, ACPI_IORT_NODE *node, uint32_t *id)
+{
+ ACPI_IORT_ID_MAPPING *map;
+
+ map = acpi_iort_id_map(node, id);
+ if (map == NULL)
+ return NULL;
+
+ return ACPI_ADD_PTR(ACPI_IORT_NODE, iort, map->OutputReference);
+}
+
+uint32_t
+acpi_iort_pci_root_map(u_int seg, uint32_t devid)
+{
+ ACPI_TABLE_IORT *iort;
+ ACPI_IORT_NODE *node;
+ ACPI_IORT_ROOT_COMPLEX *root;
+ uint32_t offset, n;
+ ACPI_STATUS rv;
+
+ rv = AcpiGetTable(ACPI_SIG_IORT, 0, (ACPI_TABLE_HEADER **)&iort);
+ if (ACPI_FAILURE(rv))
+ return devid;
+
+ offset = iort->NodeOffset;
+ for (n = 0; n < iort->NodeCount; n++) {
+ node = ACPI_ADD_PTR(ACPI_IORT_NODE, iort, offset);
+ if (node->Type == ACPI_IORT_NODE_PCI_ROOT_COMPLEX) {
+ root = (ACPI_IORT_ROOT_COMPLEX *)node->NodeData;
+ if (root->PciSegmentNumber == seg) {
+ const uint32_t odevid = devid;
+ do {
+ node = acpi_iort_find_ref(iort, node, &devid);
+ } while (node != NULL);
+ aprint_debug("ACPI: IORT remapped devid %#x -> %#x\n", odevid, devid);
+ return devid;
+ }
+ }
+ offset += node->Length;
+ }
+
+ return devid;
+}
diff -r e518f5d845cc -r 919acb490916 sys/arch/arm/acpi/acpi_iort.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/arm/acpi/acpi_iort.h Sat Dec 08 15:04:40 2018 +0000
@@ -0,0 +1,37 @@
+/* $NetBSD: acpi_iort.h,v 1.1 2018/12/08 15:04:40 jmcneill Exp $ */
+
+/*-
+ * Copyright (c) 2018 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jared McNeill <jmcneill%invisible.ca@localhost>.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``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 FOUNDATION OR CONTRIBUTORS
+ * 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.
+ */
+
+#ifndef _ARM_ACPI_ACPI_IORT_H
+#define _ARM_ACPI_ACPI_IORT_H
+
+uint32_t acpi_iort_pci_root_map(u_int, uint32_t);
+
+#endif /* !_ARM_ACPI_ACPI_IORT_H */
diff -r e518f5d845cc -r 919acb490916 sys/arch/arm/acpi/acpi_pci_machdep.c
--- a/sys/arch/arm/acpi/acpi_pci_machdep.c Sat Dec 08 15:02:06 2018 +0000
+++ b/sys/arch/arm/acpi/acpi_pci_machdep.c Sat Dec 08 15:04:40 2018 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: acpi_pci_machdep.c,v 1.8 2018/11/16 15:06:21 jmcneill Exp $ */
+/* $NetBSD: acpi_pci_machdep.c,v 1.9 2018/12/08 15:04:40 jmcneill Exp $ */
/*-
* Copyright (c) 2018 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: acpi_pci_machdep.c,v 1.8 2018/11/16 15:06:21 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: acpi_pci_machdep.c,v 1.9 2018/12/08 15:04:40 jmcneill Exp $");
#include <sys/param.h>
#include <sys/bus.h>
@@ -55,6 +55,7 @@
#include <dev/acpi/acpi_mcfg.h>
#include <dev/acpi/acpi_pci.h>
+#include <arm/acpi/acpi_iort.h>
#include <arm/acpi/acpi_pci_machdep.h>
#include <arm/pci/pci_msi_machdep.h>
@@ -75,6 +76,7 @@
static pcitag_t acpi_pci_md_make_tag(void *, int, int, int);
static void acpi_pci_md_decompose_tag(void *, pcitag_t, int *, int *, int *);
static u_int acpi_pci_md_get_segment(void *);
+static uint32_t acpi_pci_md_get_devid(void *, uint32_t);
static pcireg_t acpi_pci_md_conf_read(void *, pcitag_t, int);
static void acpi_pci_md_conf_write(void *, pcitag_t, int, pcireg_t);
static int acpi_pci_md_conf_hook(void *, int, int, int, pcireg_t);
@@ -98,6 +100,7 @@
.pc_make_tag = acpi_pci_md_make_tag,
.pc_decompose_tag = acpi_pci_md_decompose_tag,
.pc_get_segment = acpi_pci_md_get_segment,
+ .pc_get_devid = acpi_pci_md_get_devid,
.pc_conf_read = acpi_pci_md_conf_read,
.pc_conf_write = acpi_pci_md_conf_write,
.pc_conf_hook = acpi_pci_md_conf_hook,
@@ -240,6 +243,14 @@
return ap->ap_seg;
}
+static uint32_t
+acpi_pci_md_get_devid(void *v, uint32_t devid)
+{
+ struct acpi_pci_context * const ap = v;
+
+ return acpi_iort_pci_root_map(ap->ap_seg, devid);
+}
+
static pcireg_t
acpi_pci_md_conf_read(void *v, pcitag_t tag, int offset)
{
diff -r e518f5d845cc -r 919acb490916 sys/arch/arm/acpi/files.acpi
--- a/sys/arch/arm/acpi/files.acpi Sat Dec 08 15:02:06 2018 +0000
+++ b/sys/arch/arm/acpi/files.acpi Sat Dec 08 15:04:40 2018 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: files.acpi,v 1.5 2018/11/12 12:56:05 jmcneill Exp $
+# $NetBSD: files.acpi,v 1.6 2018/12/08 15:04:40 jmcneill Exp $
#
# Configuration info for ACPI compliant ARM boards.
#
@@ -10,6 +10,7 @@
include "dev/acpi/files.acpi"
+file arch/arm/acpi/acpi_iort.c acpi
file arch/arm/acpi/acpi_machdep.c acpi
file arch/arm/acpi/acpi_pci_machdep.c acpi & pci
file arch/arm/acpi/acpi_platform.c acpi
diff -r e518f5d845cc -r 919acb490916 sys/arch/arm/cortex/gicv3_its.c
--- a/sys/arch/arm/cortex/gicv3_its.c Sat Dec 08 15:02:06 2018 +0000
+++ b/sys/arch/arm/cortex/gicv3_its.c Sat Dec 08 15:04:40 2018 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: gicv3_its.c,v 1.9 2018/11/28 22:54:11 jmcneill Exp $ */
+/* $NetBSD: gicv3_its.c,v 1.10 2018/12/08 15:04:40 jmcneill Exp $ */
/*-
* Copyright (c) 2018 The NetBSD Foundation, Inc.
@@ -32,7 +32,7 @@
#define _INTR_PRIVATE
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: gicv3_its.c,v 1.9 2018/11/28 22:54:11 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: gicv3_its.c,v 1.10 2018/12/08 15:04:40 jmcneill Exp $");
#include <sys/param.h>
#include <sys/kmem.h>
@@ -282,11 +282,14 @@
static uint32_t
gicv3_its_devid(pci_chipset_tag_t pc, pcitag_t tag)
{
+ uint32_t devid;
int b, d, f;
pci_decompose_tag(pc, tag, &b, &d, &f);
- return (b << 8) | (d << 3) | f;
+ devid = (b << 8) | (d << 3) | f;
+
+ return pci_get_devid(pc, devid);
}
static int
diff -r e518f5d845cc -r 919acb490916 sys/arch/arm/include/pci_machdep.h
--- a/sys/arch/arm/include/pci_machdep.h Sat Dec 08 15:02:06 2018 +0000
+++ b/sys/arch/arm/include/pci_machdep.h Sat Dec 08 15:04:40 2018 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: pci_machdep.h,v 1.16 2018/11/16 15:06:22 jmcneill Exp $ */
+/* $NetBSD: pci_machdep.h,v 1.17 2018/12/08 15:04:40 jmcneill Exp $ */
/*
* Modified for arm32 by Mark Brinicombe
@@ -92,6 +92,7 @@
void (*pc_decompose_tag)(void *, pcitag_t, int *,
int *, int *);
u_int (*pc_get_segment)(void *);
+ uint32_t (*pc_get_devid)(void *, uint32_t);
pcireg_t (*pc_conf_read)(void *, pcitag_t, int);
void (*pc_conf_write)(void *, pcitag_t, int, pcireg_t);
@@ -148,6 +149,8 @@
(*(c)->pc_decompose_tag)((c)->pc_conf_v, (t), (bp), (dp), (fp))
#define pci_get_segment(c) \
((c)->pc_get_segment ? (*(c)->pc_get_segment)((c)->pc_conf_v) : 0)
+#define pci_get_devid(c, d) \
+ ((c)->pc_get_devid ? (*(c)->pc_get_devid)((c)->pc_conf_v, (d)) : (d))
#define pci_conf_read(c, t, r) \
(*(c)->pc_conf_read)((c)->pc_conf_v, (t), (r))
#define pci_conf_write(c, t, r, v) \
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