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[src/trunk]: src/sys/arch/arm Add ARM ACPI PCI support.
details: https://anonhg.NetBSD.org/src/rev/90c08225d2f7
branches: trunk
changeset: 836396:90c08225d2f7
user: jmcneill <jmcneill%NetBSD.org@localhost>
date: Mon Oct 15 11:35:03 2018 +0000
description:
Add ARM ACPI PCI support.
diffstat:
sys/arch/arm/acpi/acpi_machdep.c | 7 +-
sys/arch/arm/acpi/acpi_pci_machdep.c | 367 +++++++++++++++++++++++++++++++++++
sys/arch/arm/acpi/acpi_pci_machdep.h | 37 +++
sys/arch/arm/acpi/acpipchb.c | 142 +++++++++++++
sys/arch/arm/acpi/files.acpi | 7 +-
sys/arch/arm/fdt/acpi_fdt.c | 10 +-
6 files changed, 563 insertions(+), 7 deletions(-)
diffs (truncated from 657 to 300 lines):
diff -r 1f9b44df084d -r 90c08225d2f7 sys/arch/arm/acpi/acpi_machdep.c
--- a/sys/arch/arm/acpi/acpi_machdep.c Mon Oct 15 11:33:09 2018 +0000
+++ b/sys/arch/arm/acpi/acpi_machdep.c Mon Oct 15 11:35:03 2018 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: acpi_machdep.c,v 1.1 2018/10/12 22:12:11 jmcneill Exp $ */
+/* $NetBSD: acpi_machdep.c,v 1.2 2018/10/15 11:35:03 jmcneill Exp $ */
/*-
* Copyright (c) 2018 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: acpi_machdep.c,v 1.1 2018/10/12 22:12:11 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: acpi_machdep.c,v 1.2 2018/10/15 11:35:03 jmcneill Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -44,6 +44,7 @@
#include <dev/acpi/acpica.h>
#include <dev/acpi/acpivar.h>
+#include <dev/acpi/acpi_mcfg.h>
#include <arm/pic/picvar.h>
@@ -239,6 +240,8 @@
{
ACPI_TABLE_HEADER *hdrp;
+ acpimcfg_init(&arm_generic_bs_tag, NULL);
+
if (acpi_madt_map() != AE_OK)
panic("Failed to map MADT");
acpi_madt_walk(acpi_md_madt_probe, sc);
diff -r 1f9b44df084d -r 90c08225d2f7 sys/arch/arm/acpi/acpi_pci_machdep.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/arm/acpi/acpi_pci_machdep.c Mon Oct 15 11:35:03 2018 +0000
@@ -0,0 +1,367 @@
+/* $NetBSD: acpi_pci_machdep.c,v 1.1 2018/10/15 11:35:03 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_pci_machdep.c,v 1.1 2018/10/15 11:35:03 jmcneill Exp $");
+
+#include <sys/param.h>
+#include <sys/bus.h>
+#include <sys/device.h>
+#include <sys/intr.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/extent.h>
+#include <sys/queue.h>
+#include <sys/mutex.h>
+#include <sys/kmem.h>
+
+#include <machine/cpu.h>
+
+#include <arm/cpufunc.h>
+
+#include <dev/pci/pcireg.h>
+#include <dev/pci/pcivar.h>
+#include <dev/pci/pciconf.h>
+
+#include <dev/acpi/acpivar.h>
+#include <dev/acpi/acpi_mcfg.h>
+#include <dev/acpi/acpi_pci.h>
+
+#define IH_INDEX_MASK 0x0000ffff
+#define IH_MPSAFE 0x80000000
+
+struct acpi_pci_prt {
+ u_int prt_bus;
+ ACPI_HANDLE prt_handle;
+ TAILQ_ENTRY(acpi_pci_prt) prt_list;
+};
+
+static TAILQ_HEAD(, acpi_pci_prt) acpi_pci_irq_routes =
+ TAILQ_HEAD_INITIALIZER(acpi_pci_irq_routes);
+
+static void acpi_pci_md_attach_hook(device_t, device_t,
+ struct pcibus_attach_args *);
+static int acpi_pci_md_bus_maxdevs(void *, int);
+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 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);
+static void acpi_pci_md_conf_interrupt(void *, int, int, int, int, int *);
+
+static int acpi_pci_md_intr_map(const struct pci_attach_args *,
+ pci_intr_handle_t *);
+static const char *acpi_pci_md_intr_string(void *, pci_intr_handle_t,
+ char *, size_t);
+static const struct evcnt *acpi_pci_md_intr_evcnt(void *, pci_intr_handle_t);
+static int acpi_pci_md_intr_setattr(void *, pci_intr_handle_t *, int,
+ uint64_t);
+static void * acpi_pci_md_intr_establish(void *, pci_intr_handle_t,
+ int, int (*)(void *), void *);
+static void acpi_pci_md_intr_disestablish(void *, void *);
+
+struct arm32_pci_chipset arm_acpi_pci_chipset = {
+ .pc_attach_hook = acpi_pci_md_attach_hook,
+ .pc_bus_maxdevs = acpi_pci_md_bus_maxdevs,
+ .pc_make_tag = acpi_pci_md_make_tag,
+ .pc_decompose_tag = acpi_pci_md_decompose_tag,
+ .pc_conf_read = acpi_pci_md_conf_read,
+ .pc_conf_write = acpi_pci_md_conf_write,
+ .pc_conf_hook = acpi_pci_md_conf_hook,
+ .pc_conf_interrupt = acpi_pci_md_conf_interrupt,
+
+ .pc_intr_map = acpi_pci_md_intr_map,
+ .pc_intr_string = acpi_pci_md_intr_string,
+ .pc_intr_evcnt = acpi_pci_md_intr_evcnt,
+ .pc_intr_setattr = acpi_pci_md_intr_setattr,
+ .pc_intr_establish = acpi_pci_md_intr_establish,
+ .pc_intr_disestablish = acpi_pci_md_intr_disestablish,
+};
+
+static ACPI_STATUS
+acpi_pci_md_pci_link(ACPI_HANDLE handle, int bus)
+{
+ ACPI_PCI_ROUTING_TABLE *prt;
+ ACPI_HANDLE linksrc;
+ ACPI_BUFFER buf;
+ ACPI_STATUS rv;
+ void *linkdev;
+
+ rv = acpi_get(handle, &buf, AcpiGetIrqRoutingTable);
+ if (ACPI_FAILURE(rv))
+ return rv;
+
+ for (char *p = buf.Pointer; ; p += prt->Length) {
+ prt = (ACPI_PCI_ROUTING_TABLE *)p;
+ if (prt->Length == 0)
+ break;
+
+ const u_int dev = ACPI_HIWORD(prt->Address);
+ if (prt->Source[0] != 0) {
+ aprint_debug("ACPI: %s dev %u INT%c on lnkdev %s\n",
+ acpi_name(handle), dev, 'A' + (prt->Pin & 3), prt->Source);
+ rv = AcpiGetHandle(ACPI_ROOT_OBJECT, prt->Source, &linksrc);
+ if (ACPI_FAILURE(rv)) {
+ aprint_debug("ACPI: AcpiGetHandle failed for '%s': %s\n",
+ prt->Source, AcpiFormatException(rv));
+ continue;
+ }
+
+ linkdev = acpi_pci_link_devbyhandle(linksrc);
+ acpi_pci_link_add_reference(linkdev, 0, bus, dev, prt->Pin & 3);
+ } else {
+ aprint_debug("ACPI: %s dev %u INT%c on globint %d\n",
+ acpi_name(handle), dev, 'A' + (prt->Pin & 3), prt->SourceIndex);
+ }
+ }
+
+ return AE_OK;
+}
+
+static void
+acpi_pci_md_attach_hook(device_t parent, device_t self,
+ struct pcibus_attach_args *pba)
+{
+ struct acpi_pci_prt *prt, *prtp;
+ struct acpi_devnode *ad;
+ ACPI_HANDLE handle;
+ int seg, bus, dev, func;
+
+ seg = 0; /* XXX segment */
+ handle = NULL;
+
+ if (pba->pba_bridgetag) {
+ /*
+ * Find the PCI address of our parent bridge and look for the
+ * corresponding ACPI device node. If there is no node for this
+ * bus, use the parent bridge routing information.
+ */
+ acpi_pci_md_decompose_tag(NULL, *pba->pba_bridgetag, &bus, &dev, &func);
+ ad = acpi_pcidev_find(seg, bus, dev, func);
+ if (ad != NULL) {
+ handle = ad->ad_handle;
+ } else {
+ /* No routes defined for this bus, copy from parent */
+ TAILQ_FOREACH(prtp, &acpi_pci_irq_routes, prt_list)
+ if (prtp->prt_bus == bus) {
+ handle = prtp->prt_handle;
+ break;
+ }
+ }
+ } else {
+ /*
+ * Lookup the ACPI device node for the root bus.
+ */
+ ad = acpi_pciroot_find(seg, 0);
+ if (ad != NULL)
+ handle = ad->ad_handle;
+ }
+
+ if (ad != NULL) {
+ /*
+ * This is a new ACPI managed bus. Add PCI link references.
+ */
+ acpi_pci_md_pci_link(ad->ad_handle, pba->pba_bus);
+ }
+
+ if (handle != NULL) {
+ prt = kmem_alloc(sizeof(*prt), KM_SLEEP);
+ prt->prt_bus = pba->pba_bus;
+ prt->prt_handle = handle;
+ TAILQ_INSERT_TAIL(&acpi_pci_irq_routes, prt, prt_list);
+ }
+
+ acpimcfg_map_bus(self, pba->pba_pc, pba->pba_bus);
+}
+
+static int
+acpi_pci_md_bus_maxdevs(void *v, int busno)
+{
+ return 32;
+}
+
+static pcitag_t
+acpi_pci_md_make_tag(void *v, int b, int d, int f)
+{
+ return (b << 16) | (d << 11) | (f << 8);
+}
+
+static void
+acpi_pci_md_decompose_tag(void *v, pcitag_t tag, int *bp, int *dp, int *fp)
+{
+ if (bp)
+ *bp = (tag >> 16) & 0xff;
+ if (dp)
+ *dp = (tag >> 11) & 0x1f;
+ if (fp)
+ *fp = (tag >> 8) & 0x7;
+}
+
+static pcireg_t
+acpi_pci_md_conf_read(void *v, pcitag_t tag, int offset)
+{
+ pcireg_t val;
+
+ if (offset < 0 || offset >= PCI_EXTCONF_SIZE)
+ return (pcireg_t) -1;
+
+ acpimcfg_conf_read(&arm_acpi_pci_chipset, tag, offset, &val);
+
+ return val;
+}
+
+static void
+acpi_pci_md_conf_write(void *v, pcitag_t tag, int offset, pcireg_t val)
+{
+ if (offset < 0 || offset >= PCI_EXTCONF_SIZE)
+ return;
+
+ acpimcfg_conf_write(&arm_acpi_pci_chipset, tag, offset, val);
+}
+
+static int
+acpi_pci_md_conf_hook(void *v, int b, int d, int f, pcireg_t id)
+{
+ return PCI_CONF_DEFAULT;
+}
+
+static void
+acpi_pci_md_conf_interrupt(void *v, int bus, int dev, int ipin, int sqiz, int *ilinep)
+{
+}
+
+static struct acpi_pci_prt *
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