Add pvpanic pci device driver support.
Signed-off-by: Mihai Carabas <[email protected]>
---
drivers/misc/pvpanic/Kconfig | 16 ++++++++++-
drivers/misc/pvpanic/Makefile | 7 +++++
drivers/misc/pvpanic/pvpanic-pci.c | 54 ++++++++++++++++++++++++++++++++++++++
3 files changed, 76 insertions(+), 1 deletion(-)
create mode 100644 drivers/misc/pvpanic/pvpanic-pci.c
diff --git a/drivers/misc/pvpanic/Kconfig b/drivers/misc/pvpanic/Kconfig
index 12bb017..4a96e8d 100644
--- a/drivers/misc/pvpanic/Kconfig
+++ b/drivers/misc/pvpanic/Kconfig
@@ -1,6 +1,11 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# pvpanic device
+#
+
config PVPANIC
bool "pvpanic device support"
- depends on PVPANIC_MMIO
+ depends on (PVPANIC_MMIO || PVPANIC_PCI)
help
This option enable generic code for pvpanic device driver logic.
@@ -12,3 +17,12 @@ config PVPANIC_MMIO
This driver provides support for the pvpanic device. pvpanic is
a paravirtualized device provided by QEMU; it lets a virtual machine
(guest) communicate panic events to the host.
+
+config PVPANIC_PCI
+ tristate "pvpanic pci device support"
+ depends on PCI
+ select PVPANIC
+ help
+ This driver provides support for the pvpanic device. pvpanic is
+ a paravirtualized device provided by QEMU; it lets a virtual machine
+ (guest) communicate panic events to the host.
diff --git a/drivers/misc/pvpanic/Makefile b/drivers/misc/pvpanic/Makefile
index d08379b..fe57d1f 100644
--- a/drivers/misc/pvpanic/Makefile
+++ b/drivers/misc/pvpanic/Makefile
@@ -1,2 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for pvpanic device.
+#
+
+
obj-$(CONFIG_PVPANIC) += pvpanic.o
obj-$(CONFIG_PVPANIC_MMIO) += pvpanic-mmio.o
+obj-$(CONFIG_PVPANIC_PCI) += pvpanic-pci.o
diff --git a/drivers/misc/pvpanic/pvpanic-pci.c
b/drivers/misc/pvpanic/pvpanic-pci.c
new file mode 100644
index 00000000..1d25d11
--- /dev/null
+++ b/drivers/misc/pvpanic/pvpanic-pci.c
@@ -0,0 +1,54 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * pvpanic pci driver.
+ *
+ * Copyright (C) 2021 Oracle.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/types.h>
+#include "pvpanic.h"
+
+#define PCI_VENDOR_ID_REDHAT 0x1b36
+#define PCI_DEVICE_ID_REDHAT_PVPANIC 0x0011
+
+static const struct pci_device_id pvpanic_pci_id_tbl[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_REDHAT, PCI_DEVICE_ID_REDHAT_PVPANIC),},
+ {}
+};
+
+static int pvpanic_pci_probe(struct pci_dev *pdev,
+ const struct pci_device_id *ent)
+{
+ int ret;
+ struct resource res;
+ void __iomem *base;
+
+ ret = pcim_enable_device(pdev);
+ if (ret < 0)
+ return ret;
+
+ base = pci_iomap(pdev, 0, 0);
+ if (IS_ERR(base))
+ return PTR_ERR(base);
+
+ pvpanic_probe(base);
+
+ return 0;
+}
+
+static void pvpanic_pci_remove(struct pci_dev *pdev)
+{
+ pvpanic_remove();
+}
+
+static struct pci_driver pvpanic_pci_driver = {
+ .name = "pvpanic-pci",
+ .id_table = pvpanic_pci_id_tbl,
+ .probe = pvpanic_pci_probe,
+ .remove = pvpanic_pci_remove,
+};
+
+module_pci_driver(pvpanic_pci_driver);
--
1.8.3.1
