From: Matthew Rosato <mjrosato@linux.ibm.com>
To: linux-s390@vger.kernel.org
Cc: alex.williamson@redhat.com, cohuck@redhat.com,
schnelle@linux.ibm.com, farman@linux.ibm.com,
pmorel@linux.ibm.com, borntraeger@linux.ibm.com,
hca@linux.ibm.com, gor@linux.ibm.com,
gerald.schaefer@linux.ibm.com, agordeev@linux.ibm.com,
frankja@linux.ibm.com, david@redhat.com, imbrenda@linux.ibm.com,
vneethv@linux.ibm.com, oberpar@linux.ibm.com,
freude@linux.ibm.com, thuth@redhat.com, pasic@linux.ibm.com,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v2 14/30] KVM: s390: pci: add basic kvm_zdev structure
Date: Fri, 14 Jan 2022 15:31:29 -0500 [thread overview]
Message-ID: <20220114203145.242984-15-mjrosato@linux.ibm.com> (raw)
In-Reply-To: <20220114203145.242984-1-mjrosato@linux.ibm.com>
This structure will be used to carry kvm passthrough information related to
zPCI devices.
Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
---
arch/s390/include/asm/kvm_pci.h | 29 +++++++++++++++++++++
arch/s390/include/asm/pci.h | 3 +++
arch/s390/kvm/Makefile | 2 +-
arch/s390/kvm/pci.c | 46 +++++++++++++++++++++++++++++++++
4 files changed, 79 insertions(+), 1 deletion(-)
create mode 100644 arch/s390/include/asm/kvm_pci.h
create mode 100644 arch/s390/kvm/pci.c
diff --git a/arch/s390/include/asm/kvm_pci.h b/arch/s390/include/asm/kvm_pci.h
new file mode 100644
index 000000000000..aafee2976929
--- /dev/null
+++ b/arch/s390/include/asm/kvm_pci.h
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * KVM PCI Passthrough for virtual machines on s390
+ *
+ * Copyright IBM Corp. 2021
+ *
+ * Author(s): Matthew Rosato <mjrosato@linux.ibm.com>
+ */
+
+
+#ifndef ASM_KVM_PCI_H
+#define ASM_KVM_PCI_H
+
+#include <linux/types.h>
+#include <linux/kvm_types.h>
+#include <linux/kvm_host.h>
+#include <linux/kvm.h>
+#include <linux/pci.h>
+
+struct kvm_zdev {
+ struct zpci_dev *zdev;
+ struct kvm *kvm;
+};
+
+int kvm_s390_pci_dev_open(struct zpci_dev *zdev);
+void kvm_s390_pci_dev_release(struct zpci_dev *zdev);
+void kvm_s390_pci_attach_kvm(struct zpci_dev *zdev, struct kvm *kvm);
+
+#endif /* ASM_KVM_PCI_H */
diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h
index f3cd2da8128c..9b6c657d8d31 100644
--- a/arch/s390/include/asm/pci.h
+++ b/arch/s390/include/asm/pci.h
@@ -97,6 +97,7 @@ struct zpci_bar_struct {
};
struct s390_domain;
+struct kvm_zdev;
#define ZPCI_FUNCTIONS_PER_BUS 256
struct zpci_bus {
@@ -190,6 +191,8 @@ struct zpci_dev {
struct dentry *debugfs_dev;
struct s390_domain *s390_domain; /* s390 IOMMU domain data */
+
+ struct kvm_zdev *kzdev; /* passthrough data */
};
static inline bool zdev_enabled(struct zpci_dev *zdev)
diff --git a/arch/s390/kvm/Makefile b/arch/s390/kvm/Makefile
index b3aaadc60ead..a26f4fe7b680 100644
--- a/arch/s390/kvm/Makefile
+++ b/arch/s390/kvm/Makefile
@@ -11,5 +11,5 @@ ccflags-y := -Ivirt/kvm -Iarch/s390/kvm
kvm-objs := $(common-objs) kvm-s390.o intercept.o interrupt.o priv.o sigp.o
kvm-objs += diag.o gaccess.o guestdbg.o vsie.o pv.o
-
+kvm-$(CONFIG_PCI) += pci.o
obj-$(CONFIG_KVM) += kvm.o
diff --git a/arch/s390/kvm/pci.c b/arch/s390/kvm/pci.c
new file mode 100644
index 000000000000..1c33bc7bf2bd
--- /dev/null
+++ b/arch/s390/kvm/pci.c
@@ -0,0 +1,46 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * s390 kvm PCI passthrough support
+ *
+ * Copyright IBM Corp. 2021
+ *
+ * Author(s): Matthew Rosato <mjrosato@linux.ibm.com>
+ */
+
+#include <linux/kvm_host.h>
+#include <linux/pci.h>
+#include <asm/kvm_pci.h>
+
+int kvm_s390_pci_dev_open(struct zpci_dev *zdev)
+{
+ struct kvm_zdev *kzdev;
+
+ kzdev = kzalloc(sizeof(struct kvm_zdev), GFP_KERNEL);
+ if (!kzdev)
+ return -ENOMEM;
+
+ kzdev->zdev = zdev;
+ zdev->kzdev = kzdev;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(kvm_s390_pci_dev_open);
+
+void kvm_s390_pci_dev_release(struct zpci_dev *zdev)
+{
+ struct kvm_zdev *kzdev;
+
+ kzdev = zdev->kzdev;
+ WARN_ON(kzdev->zdev != zdev);
+ zdev->kzdev = 0;
+ kfree(kzdev);
+}
+EXPORT_SYMBOL_GPL(kvm_s390_pci_dev_release);
+
+void kvm_s390_pci_attach_kvm(struct zpci_dev *zdev, struct kvm *kvm)
+{
+ struct kvm_zdev *kzdev = zdev->kzdev;
+
+ kzdev->kvm = kvm;
+}
+EXPORT_SYMBOL_GPL(kvm_s390_pci_attach_kvm);
--
2.27.0
next prev parent reply other threads:[~2022-01-14 20:32 UTC|newest]
Thread overview: 97+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-14 20:31 [PATCH v2 00/30] KVM: s390: enable zPCI for interpretive execution Matthew Rosato
2022-01-14 20:31 ` [PATCH v2 01/30] s390/sclp: detect the zPCI load/store interpretation facility Matthew Rosato
2022-01-14 20:31 ` [PATCH v2 02/30] s390/sclp: detect the AISII facility Matthew Rosato
2022-01-14 20:31 ` [PATCH v2 03/30] s390/sclp: detect the AENI facility Matthew Rosato
2022-01-14 20:31 ` [PATCH v2 04/30] s390/sclp: detect the AISI facility Matthew Rosato
2022-01-17 7:57 ` Thomas Huth
2022-01-14 20:31 ` [PATCH v2 05/30] s390/airq: pass more TPI info to airq handlers Matthew Rosato
2022-01-17 8:27 ` Thomas Huth
2022-01-14 20:31 ` [PATCH v2 06/30] s390/airq: allow for airq structure that uses an input vector Matthew Rosato
2022-01-17 12:29 ` Claudio Imbrenda
2022-01-18 18:52 ` Matthew Rosato
2022-01-18 9:50 ` Pierre Morel
2022-01-14 20:31 ` [PATCH v2 07/30] s390/pci: externalize the SIC operation controls and routine Matthew Rosato
2022-01-17 16:19 ` Niklas Schnelle
2022-01-26 10:07 ` Claudio Imbrenda
2022-01-27 9:57 ` Pierre Morel
2022-01-14 20:31 ` [PATCH v2 08/30] s390/pci: stash associated GISA designation Matthew Rosato
2022-01-24 14:08 ` Pierre Morel
2022-01-24 15:12 ` Matthew Rosato
2022-01-14 20:31 ` [PATCH v2 09/30] s390/pci: export some routines related to RPCIT processing Matthew Rosato
2022-01-18 9:51 ` Pierre Morel
2022-01-14 20:31 ` [PATCH v2 10/30] s390/pci: stash dtsm and maxstbl Matthew Rosato
2022-01-14 20:31 ` [PATCH v2 11/30] s390/pci: add helper function to find device by handle Matthew Rosato
2022-01-18 9:53 ` Pierre Morel
2022-01-14 20:31 ` [PATCH v2 12/30] s390/pci: get SHM information from list pci Matthew Rosato
2022-01-18 10:36 ` Pierre Morel
2022-01-26 10:13 ` Claudio Imbrenda
2022-01-27 13:41 ` Pierre Morel
2022-01-27 15:14 ` Matthew Rosato
2022-01-27 10:29 ` Niklas Schnelle
2022-01-14 20:31 ` [PATCH v2 13/30] s390/pci: return status from zpci_refresh_trans Matthew Rosato
2022-01-19 18:13 ` Pierre Morel
2022-01-26 10:45 ` Claudio Imbrenda
2022-01-27 10:30 ` Niklas Schnelle
2022-01-14 20:31 ` Matthew Rosato [this message]
2022-01-17 16:25 ` [PATCH v2 14/30] KVM: s390: pci: add basic kvm_zdev structure Pierre Morel
2022-01-18 17:32 ` Pierre Morel
2022-01-18 18:39 ` Matthew Rosato
2022-01-14 20:31 ` [PATCH v2 15/30] KVM: s390: pci: do initial setup for AEN interpretation Matthew Rosato
2022-01-19 18:06 ` Pierre Morel
2022-01-19 20:19 ` Matthew Rosato
2022-01-25 12:23 ` Pierre Morel
2022-01-25 14:57 ` Matthew Rosato
2022-01-14 20:31 ` [PATCH v2 16/30] KVM: s390: pci: enable host forwarding of Adapter Event Notifications Matthew Rosato
2022-01-17 17:38 ` Pierre Morel
2022-01-18 17:25 ` Matthew Rosato
2022-01-14 20:31 ` [PATCH v2 17/30] KVM: s390: mechanism to enable guest zPCI Interpretation Matthew Rosato
2022-01-24 14:24 ` Pierre Morel
2022-01-24 15:28 ` Matthew Rosato
2022-01-24 17:15 ` Pierre Morel
2022-01-14 20:31 ` [PATCH v2 18/30] KVM: s390: pci: provide routines for enabling/disabling interpretation Matthew Rosato
2022-01-24 14:36 ` Pierre Morel
2022-01-24 15:14 ` Matthew Rosato
2022-01-14 20:31 ` [PATCH v2 19/30] KVM: s390: pci: provide routines for enabling/disabling interrupt forwarding Matthew Rosato
2022-01-25 12:41 ` Pierre Morel
2022-01-25 15:44 ` Matthew Rosato
2022-01-14 20:31 ` [PATCH v2 20/30] KVM: s390: pci: provide routines for enabling/disabling IOAT assist Matthew Rosato
2022-01-25 13:29 ` Pierre Morel
2022-01-25 14:47 ` Matthew Rosato
2022-01-26 8:30 ` Pierre Morel
2022-01-14 20:31 ` [PATCH v2 21/30] KVM: s390: pci: handle refresh of PCI translations Matthew Rosato
2022-01-19 9:29 ` Pierre Morel
2022-01-19 16:39 ` Matthew Rosato
2022-01-19 18:25 ` Pierre Morel
2022-01-19 20:02 ` Matthew Rosato
2022-01-20 9:47 ` Pierre Morel
2022-01-14 20:31 ` [PATCH v2 22/30] KVM: s390: intercept the rpcit instruction Matthew Rosato
2022-01-18 11:05 ` Pierre Morel
2022-01-18 17:27 ` Matthew Rosato
2022-01-18 17:54 ` Pierre Morel
2022-01-19 14:06 ` Pierre Morel
2022-01-14 20:31 ` [PATCH v2 23/30] vfio/pci: re-introduce CONFIG_VFIO_PCI_ZDEV Matthew Rosato
2022-01-18 17:20 ` Pierre Morel
2022-01-18 17:32 ` Matthew Rosato
2022-01-18 17:45 ` Pierre Morel
2022-01-18 18:05 ` Matthew Rosato
2022-01-14 20:31 ` [PATCH v2 24/30] vfio-pci/zdev: wire up group notifier Matthew Rosato
2022-01-18 17:34 ` Pierre Morel
2022-01-18 18:37 ` Matthew Rosato
2022-01-14 20:31 ` [PATCH v2 25/30] vfio-pci/zdev: wire up zPCI interpretive execution support Matthew Rosato
2022-01-25 13:01 ` Pierre Morel
2022-01-25 14:21 ` Matthew Rosato
2022-01-14 20:31 ` [PATCH v2 26/30] vfio-pci/zdev: wire up zPCI adapter interrupt forwarding support Matthew Rosato
2022-01-19 17:10 ` Pierre Morel
2022-01-19 17:20 ` Matthew Rosato
2022-01-25 12:36 ` Pierre Morel
2022-01-25 14:16 ` Matthew Rosato
2022-01-26 8:24 ` Pierre Morel
2022-01-14 20:31 ` [PATCH v2 27/30] vfio-pci/zdev: wire up zPCI IOAT assist support Matthew Rosato
2022-01-19 14:03 ` Pierre Morel
2022-01-14 20:31 ` [PATCH v2 28/30] vfio-pci/zdev: add DTSM to clp group capability Matthew Rosato
2022-01-19 13:48 ` Pierre Morel
2022-01-14 20:31 ` [PATCH v2 29/30] KVM: s390: introduce CPU feature for zPCI Interpretation Matthew Rosato
2022-01-19 13:39 ` Pierre Morel
2022-01-14 20:31 ` [PATCH v2 30/30] MAINTAINERS: additional files related kvm s390 pci passthrough Matthew Rosato
2022-01-14 20:49 ` [PATCH v2 00/30] KVM: s390: enable zPCI for interpretive execution Matthew Rosato
2022-01-19 18:10 ` Pierre Morel
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