From: Jagannathan Raman <jag.raman@oracle.com>
To: qemu-devel@nongnu.org
Cc: elena.ufimtseva@oracle.com, fam@euphon.net,
john.g.johnson@oracle.com, kraxel@redhat.com,
jag.raman@oracle.com, quintela@redhat.com, mst@redhat.com,
armbru@redhat.com, kanth.ghatraju@oracle.com, thuth@redhat.com,
ehabkost@redhat.com, konrad.wilk@oracle.com, dgilbert@redhat.com,
liran.alon@oracle.com, stefanha@redhat.com, rth@twiddle.net,
kwolf@redhat.com, berrange@redhat.com, mreitz@redhat.com,
ross.lagerwall@citrix.com, marcandre.lureau@gmail.com,
pbonzini@redhat.com
Subject: [RFC v4 PATCH 09/49] multi-process: setup PCI host bridge for remote device
Date: Thu, 24 Oct 2019 05:08:50 -0400 [thread overview]
Message-ID: <21b8d0f06279f177f2daca8779ced48af14139ee.1571905346.git.jag.raman@oracle.com> (raw)
In-Reply-To: <cover.1571905346.git.jag.raman@oracle.com>
In-Reply-To: <cover.1571905346.git.jag.raman@oracle.com>
PCI host bridge is setup for the remote device process. It is
implemented using remote-pcihost object. It is an extension of the PCI
host bridge setup by QEMU.
Remote-pcihost configures a PCI bus which could be used by the remote
PCI device to latch on to.
Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Signed-off-by: John G Johnson <john.g.johnson@oracle.com>
Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com>
---
hw/pci/Makefile.objs | 2 +-
include/remote/pcihost.h | 59 +++++++++++++++++++++++++++++++++
remote/Makefile.objs | 1 +
remote/pcihost.c | 85 ++++++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 146 insertions(+), 1 deletion(-)
create mode 100644 include/remote/pcihost.h
create mode 100644 remote/pcihost.c
diff --git a/hw/pci/Makefile.objs b/hw/pci/Makefile.objs
index 955be54..90693a7 100644
--- a/hw/pci/Makefile.objs
+++ b/hw/pci/Makefile.objs
@@ -13,6 +13,6 @@ common-obj-$(CONFIG_PCI_EXPRESS) += pcie_port.o pcie_host.o
common-obj-$(call lnot,$(CONFIG_PCI)) += pci-stub.o
common-obj-$(CONFIG_ALL) += pci-stub.o
-remote-pci-obj-$(CONFIG_MPQEMU) += pci.o pci_bridge.o
+remote-pci-obj-$(CONFIG_MPQEMU) += pci.o pci_bridge.o pci_host.o pcie_host.o
remote-pci-obj-$(CONFIG_MPQEMU) += msi.o msix.o
remote-pci-obj-$(CONFIG_MPQEMU) += pcie.o
diff --git a/include/remote/pcihost.h b/include/remote/pcihost.h
new file mode 100644
index 0000000..b3c711d
--- /dev/null
+++ b/include/remote/pcihost.h
@@ -0,0 +1,59 @@
+/*
+ * PCI Host for remote device
+ *
+ * Copyright 2019, Oracle and/or its affiliates.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef REMOTE_PCIHOST_H
+#define REMOTE_PCIHOST_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include "exec/memory.h"
+#include "hw/pci/pcie_host.h"
+
+#define TYPE_REMOTE_HOST_DEVICE "remote-pcihost"
+#define REMOTE_HOST_DEVICE(obj) \
+ OBJECT_CHECK(RemPCIHost, (obj), TYPE_REMOTE_HOST_DEVICE)
+
+typedef struct RemPCIHost {
+ /*< private >*/
+ PCIExpressHost parent_obj;
+ /*< public >*/
+
+ /*
+ * Memory Controller Hub (MCH) may not be necessary for the emulation
+ * program. The two important reasons for implementing a PCI host in the
+ * emulation program are:
+ * - Provide a PCI bus for IO devices
+ * - Enable translation of guest PA to the PCI bar regions
+ *
+ * For both the above mentioned purposes, it doesn't look like we would
+ * need the MCH
+ */
+
+ MemoryRegion *mr_pci_mem;
+ MemoryRegion *mr_sys_mem;
+ MemoryRegion *mr_sys_io;
+} RemPCIHost;
+
+#endif
diff --git a/remote/Makefile.objs b/remote/Makefile.objs
index a9b2256..2757f5a 100644
--- a/remote/Makefile.objs
+++ b/remote/Makefile.objs
@@ -1 +1,2 @@
remote-pci-obj-$(CONFIG_MPQEMU) += remote-main.o
+remote-pci-obj-$(CONFIG_MPQEMU) += pcihost.o
diff --git a/remote/pcihost.c b/remote/pcihost.c
new file mode 100644
index 0000000..0f43057
--- /dev/null
+++ b/remote/pcihost.c
@@ -0,0 +1,85 @@
+/*
+ * Remote PCI host device
+ *
+ * Copyright 2019, Oracle and/or its affiliates.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <sys/types.h>
+
+#include "qemu/osdep.h"
+#include "hw/pci/pci.h"
+#include "hw/pci/pci_host.h"
+#include "hw/pci/pcie_host.h"
+#include "hw/qdev-properties.h"
+#include "remote/pcihost.h"
+#include "exec/memory.h"
+
+static const char *remote_host_root_bus_path(PCIHostState *host_bridge,
+ PCIBus *rootbus)
+{
+ return "0000:00";
+}
+
+static void remote_host_realize(DeviceState *dev, Error **errp)
+{
+ PCIHostState *pci = PCI_HOST_BRIDGE(dev);
+ RemPCIHost *s = REMOTE_HOST_DEVICE(dev);
+
+ /*
+ * TODO: the name of the bus would be provided by QEMU. Use
+ * "pcie.0" for now.
+ */
+ pci->bus = pci_root_bus_new(DEVICE(s), "pcie.0",
+ s->mr_pci_mem, s->mr_sys_io,
+ 0, TYPE_PCIE_BUS);
+}
+
+static Property remote_host_props[] = {
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void remote_host_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ PCIHostBridgeClass *hc = PCI_HOST_BRIDGE_CLASS(klass);
+
+ hc->root_bus_path = remote_host_root_bus_path;
+ dc->realize = remote_host_realize;
+ dc->props = remote_host_props;
+
+ dc->user_creatable = false;
+ set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
+ dc->fw_name = "pci";
+}
+
+static const TypeInfo remote_host_info = {
+ .name = TYPE_REMOTE_HOST_DEVICE,
+ .parent = TYPE_PCIE_HOST_BRIDGE,
+ .instance_size = sizeof(RemPCIHost),
+ .class_init = remote_host_class_init,
+};
+
+static void remote_machine_register(void)
+{
+ type_register_static(&remote_host_info);
+}
+
+type_init(remote_machine_register)
--
1.8.3.1
next prev parent reply other threads:[~2019-10-24 9:18 UTC|newest]
Thread overview: 140+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-24 9:08 [RFC v4 PATCH 00/49] Initial support of multi-process qemu Jagannathan Raman
2019-10-24 9:08 ` [RFC v4 PATCH 01/49] multi-process: memory: alloc RAM from file at offset Jagannathan Raman
2019-10-24 9:08 ` [RFC v4 PATCH 02/49] multi-process: util: Add qemu_thread_cancel() to cancel running thread Jagannathan Raman
2019-11-13 15:30 ` Stefan Hajnoczi
2019-11-13 15:38 ` Jag Raman
2019-11-13 15:51 ` Daniel P. Berrangé
2019-11-13 16:04 ` Jag Raman
2019-11-13 16:35 ` Daniel P. Berrangé
2019-10-24 9:08 ` [RFC v4 PATCH 03/49] multi-process: add a command line option for debug file Jagannathan Raman
2019-11-13 15:35 ` Stefan Hajnoczi
2019-10-24 9:08 ` [RFC v4 PATCH 04/49] multi-process: Add stub functions to facilate build of multi-process Jagannathan Raman
2019-10-24 9:08 ` [RFC v4 PATCH 05/49] multi-process: Add config option for multi-process QEMU Jagannathan Raman
2019-10-24 9:08 ` [RFC v4 PATCH 06/49] multi-process: build system for remote device process Jagannathan Raman
2019-10-24 9:08 ` [RFC v4 PATCH 07/49] multi-process: define mpqemu-link object Jagannathan Raman
2019-11-11 16:41 ` Stefan Hajnoczi
2019-11-13 15:47 ` Jag Raman
2019-11-13 15:53 ` Stefan Hajnoczi
2019-11-18 15:26 ` Jag Raman
2019-10-24 9:08 ` [RFC v4 PATCH 08/49] multi-process: add functions to synchronize proxy and remote endpoints Jagannathan Raman
2019-10-24 9:08 ` Jagannathan Raman [this message]
2019-11-13 16:07 ` [RFC v4 PATCH 09/49] multi-process: setup PCI host bridge for remote device Stefan Hajnoczi
2019-11-18 15:25 ` Jag Raman
2019-11-21 10:37 ` Stefan Hajnoczi
2019-10-24 9:08 ` [RFC v4 PATCH 10/49] multi-process: setup a machine object for remote device process Jagannathan Raman
2019-11-13 16:22 ` Stefan Hajnoczi
2019-11-18 15:29 ` Jag Raman
2019-10-24 9:08 ` [RFC v4 PATCH 11/49] multi-process: setup memory manager for remote device Jagannathan Raman
2019-11-13 16:33 ` Stefan Hajnoczi
2019-11-13 16:34 ` Jag Raman
2019-10-24 9:08 ` [RFC v4 PATCH 12/49] multi-process: remote process initialization Jagannathan Raman
2019-11-13 16:38 ` Stefan Hajnoczi
2019-10-24 9:08 ` [RFC v4 PATCH 13/49] multi-process: introduce proxy object Jagannathan Raman
2019-11-21 11:09 ` Stefan Hajnoczi
2019-10-24 9:08 ` [RFC v4 PATCH 14/49] mutli-process: build remote command line args Jagannathan Raman
2019-11-21 11:23 ` Stefan Hajnoczi
2019-10-24 9:08 ` [RFC v4 PATCH 15/49] multi-process: PCI BAR read/write handling for proxy & remote endpoints Jagannathan Raman
2019-11-21 11:33 ` Stefan Hajnoczi
2019-10-24 9:08 ` [RFC v4 PATCH 16/49] multi-process: Add LSI device proxy object Jagannathan Raman
2019-11-21 11:35 ` Stefan Hajnoczi
2019-10-24 9:08 ` [RFC v4 PATCH 17/49] multi-process: Synchronize remote memory Jagannathan Raman
2019-11-21 11:44 ` Stefan Hajnoczi
2019-10-24 9:08 ` [RFC v4 PATCH 18/49] multi-process: create IOHUB object to handle irq Jagannathan Raman
2019-11-21 12:02 ` Stefan Hajnoczi
2019-10-24 9:09 ` [RFC v4 PATCH 19/49] multi-process: configure remote side devices Jagannathan Raman
2019-11-21 12:05 ` Stefan Hajnoczi
2019-10-24 9:09 ` [RFC v4 PATCH 20/49] multi-process: add qdev_proxy_add to create proxy devices Jagannathan Raman
2019-11-21 12:16 ` Stefan Hajnoczi
2019-10-24 9:09 ` [RFC v4 PATCH 21/49] multi-process: remote: add setup_devices and setup_drive msg processing Jagannathan Raman
2019-10-24 9:09 ` [RFC v4 PATCH 22/49] multi-process: remote: use fd for socket from parent process Jagannathan Raman
2019-10-24 9:09 ` [RFC v4 PATCH 23/49] multi-process: remote: add create_done condition Jagannathan Raman
2019-10-24 9:09 ` [RFC v4 PATCH 24/49] multi-process: add processing of remote drive and device command line Jagannathan Raman
2019-10-24 9:09 ` [RFC v4 PATCH 25/49] multi-process: Introduce build flags to separate remote process code Jagannathan Raman
2019-10-24 9:09 ` [RFC v4 PATCH 26/49] multi-process: refractor vl.c code to re-use in remote Jagannathan Raman
2019-10-24 9:09 ` [RFC v4 PATCH 27/49] multi-process: add remote option Jagannathan Raman
2019-10-24 9:09 ` [RFC v4 PATCH 28/49] multi-process: add remote options parser Jagannathan Raman
2019-10-24 9:09 ` [RFC v4 PATCH 29/49] multi-process: add parse_cmdline in remote process Jagannathan Raman
2019-10-24 9:09 ` [RFC v4 PATCH 30/49] multi-process: send heartbeat messages to remote Jagannathan Raman
2019-11-11 16:27 ` Stefan Hajnoczi
2019-11-13 16:01 ` Jag Raman
2019-11-21 12:19 ` Stefan Hajnoczi
2019-10-24 9:09 ` [RFC v4 PATCH 31/49] multi-process: handle heartbeat messages in remote process Jagannathan Raman
2019-10-24 9:09 ` [RFC v4 PATCH 32/49] multi-process: Use separate MMIO communication channel Jagannathan Raman
2019-11-11 16:21 ` Stefan Hajnoczi
2019-11-13 16:14 ` Jag Raman
2019-11-21 12:31 ` Stefan Hajnoczi
2019-10-24 9:09 ` [RFC v4 PATCH 33/49] multi-process: perform device reset in the remote process Jagannathan Raman
2019-11-11 16:19 ` Stefan Hajnoczi
2019-11-13 16:15 ` Jag Raman
2019-10-24 9:09 ` [RFC v4 PATCH 34/49] multi-process/mon: choose HMP commands based on target Jagannathan Raman
2019-10-24 9:09 ` [RFC v4 PATCH 35/49] multi-process/mon: stub functions to enable QMP module for remote process Jagannathan Raman
2019-10-24 9:09 ` [RFC v4 PATCH 36/49] multi-process/mon: enable QMP module support in the " Jagannathan Raman
2019-10-24 9:09 ` [RFC v4 PATCH 37/49] multi-process/mon: Refactor monitor/chardev functions out of vl.c Jagannathan Raman
2019-10-24 9:09 ` [RFC v4 PATCH 38/49] multi-process/mon: Initialize QMP module for remote processes Jagannathan Raman
2019-10-24 9:09 ` [RFC v4 PATCH 39/49] multi-process: prevent duplicate memory initialization in remote Jagannathan Raman
2019-10-24 9:09 ` [RFC v4 PATCH 40/49] multi-process/mig: build migration module in the remote process Jagannathan Raman
2019-10-24 9:09 ` [RFC v4 PATCH 41/49] multi-process/mig: Enable VMSD save in the Proxy object Jagannathan Raman
2019-11-13 15:50 ` Daniel P. Berrangé
2019-11-13 16:32 ` Jag Raman
2019-11-13 17:11 ` Daniel P. Berrangé
2019-11-18 15:42 ` Jag Raman
2019-11-22 10:34 ` Dr. David Alan Gilbert
2019-10-24 9:09 ` [RFC v4 PATCH 42/49] multi-process/mig: Send VMSD of remote to " Jagannathan Raman
2019-10-24 9:09 ` [RFC v4 PATCH 43/49] multi-process/mig: Load VMSD in the proxy object Jagannathan Raman
2019-10-24 9:09 ` [RFC v4 PATCH 44/49] multi-process/mig: refactor runstate_check into common file Jagannathan Raman
2019-10-24 9:09 ` [RFC v4 PATCH 45/49] multi-process/mig: Synchronize runstate of remote process Jagannathan Raman
2019-11-11 16:17 ` Stefan Hajnoczi
2019-11-13 16:33 ` Jag Raman
2019-10-24 9:09 ` [RFC v4 PATCH 46/49] multi-process/mig: Restore the VMSD in " Jagannathan Raman
2019-10-24 9:09 ` [RFC v4 PATCH 47/49] multi-process: Enable support for multiple devices in remote Jagannathan Raman
2019-11-11 16:15 ` Stefan Hajnoczi
2019-11-13 16:21 ` Jag Raman
2019-10-24 9:09 ` [RFC v4 PATCH 48/49] multi-process: add the concept description to docs/devel/qemu-multiprocess Jagannathan Raman
2019-10-25 19:33 ` Elena Ufimtseva
2019-11-07 15:50 ` Stefan Hajnoczi
2019-11-11 15:41 ` Stefan Hajnoczi
2019-10-24 9:09 ` [RFC v4 PATCH 49/49] multi-process: add configure and usage information Jagannathan Raman
2019-11-07 14:02 ` Stefan Hajnoczi
2019-11-07 14:33 ` Michael S. Tsirkin
2019-11-08 11:17 ` Stefan Hajnoczi
2019-11-08 11:32 ` Daniel P. Berrangé
2019-11-07 14:39 ` Daniel P. Berrangé
2019-11-07 15:53 ` Jag Raman
2019-11-08 11:14 ` Stefan Hajnoczi
2019-10-25 2:08 ` [RFC v4 PATCH 00/49] Initial support of multi-process qemu no-reply
2019-10-25 2:08 ` no-reply
2019-10-25 2:10 ` no-reply
2019-11-21 12:46 ` Stefan Hajnoczi
2019-12-10 6:47 ` [RFC v4 PATCH 00/49] Initial support of multi-process qemu - status update Elena Ufimtseva
2019-12-13 10:41 ` Stefan Hajnoczi
2019-12-16 19:46 ` Elena Ufimtseva
2019-12-16 19:57 ` Felipe Franciosi
2019-12-17 16:33 ` Stefan Hajnoczi
2019-12-17 22:57 ` Felipe Franciosi
2019-12-18 0:00 ` Paolo Bonzini
2019-12-19 13:36 ` Stefan Hajnoczi
2019-12-20 17:15 ` John G Johnson
2020-01-02 10:00 ` Stefan Hajnoczi
2020-01-02 10:04 ` Stefan Hajnoczi
2019-12-19 11:55 ` Stefan Hajnoczi
2019-12-19 12:33 ` Felipe Franciosi
2019-12-19 12:55 ` Daniel P. Berrangé
2019-12-20 9:47 ` Stefan Hajnoczi
2019-12-20 9:50 ` Paolo Bonzini
2019-12-20 14:14 ` Felipe Franciosi
2019-12-20 15:25 ` Alex Williamson
2019-12-20 16:00 ` Felipe Franciosi
2020-02-25 9:16 ` Thanos Makatos
2019-12-20 10:22 ` Daniel P. Berrangé
2020-01-02 10:42 ` Stefan Hajnoczi
2020-01-02 11:03 ` Felipe Franciosi
2020-01-02 18:55 ` Marc-André Lureau
2020-01-08 16:31 ` Stefan Hajnoczi
2020-01-03 15:59 ` Stefan Hajnoczi
2020-01-14 1:56 ` John G Johnson
2020-01-17 17:25 ` Dr. David Alan Gilbert
2019-12-19 16:40 ` Jag Raman
2019-12-19 12:50 ` Daniel P. Berrangé
2019-12-19 16:46 ` Daniel P. Berrangé
2020-01-02 16:01 ` Elena Ufimtseva
2020-01-03 15:00 ` Stefan Hajnoczi
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