* [PATCH V3 1/6] misc/pvpanic: preparing for pvpanic driver framework
2019-01-23 15:47 [PATCH V3 0/6] add pvpanic driver framework Peng Hao
@ 2019-01-23 15:47 ` Peng Hao
2019-01-23 15:47 ` [PATCH V3 2/6] misc/pvpanic: Add " Peng Hao
` (4 subsequent siblings)
5 siblings, 0 replies; 8+ messages in thread
From: Peng Hao @ 2019-01-23 15:47 UTC (permalink / raw)
To: gregkh, arnd, andy.shevchenko; +Cc: linux-kernel, Peng Hao
Preparing for pvpanic driver framework. Create a pvpanic driver
directory and move current driver file to new directory.
Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
---
drivers/misc/Kconfig | 9 +--------
drivers/misc/Makefile | 2 +-
drivers/misc/pvpanic/Kconfig | 7 +++++++
drivers/misc/pvpanic/Makefile | 5 +++++
drivers/misc/{ => pvpanic}/pvpanic.c | 0
5 files changed, 14 insertions(+), 9 deletions(-)
create mode 100644 drivers/misc/pvpanic/Kconfig
create mode 100644 drivers/misc/pvpanic/Makefile
rename drivers/misc/{ => pvpanic}/pvpanic.c (100%)
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index f417b06..aa3a805 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -513,14 +513,7 @@ config MISC_RTSX
tristate
default MISC_RTSX_PCI || MISC_RTSX_USB
-config PVPANIC
- tristate "pvpanic device support"
- depends on HAS_IOMEM && (ACPI || OF)
- 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.
-
+source "drivers/misc/pvpanic/Kconfig"
source "drivers/misc/c2port/Kconfig"
source "drivers/misc/eeprom/Kconfig"
source "drivers/misc/cb710/Kconfig"
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index e39ccbb..cfe20b3 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -58,4 +58,4 @@ obj-$(CONFIG_ASPEED_LPC_SNOOP) += aspeed-lpc-snoop.o
obj-$(CONFIG_PCI_ENDPOINT_TEST) += pci_endpoint_test.o
obj-$(CONFIG_OCXL) += ocxl/
obj-y += cardreader/
-obj-$(CONFIG_PVPANIC) += pvpanic.o
+obj-$(CONFIG_PVPANIC) += pvpanic/
diff --git a/drivers/misc/pvpanic/Kconfig b/drivers/misc/pvpanic/Kconfig
new file mode 100644
index 0000000..3e612c6
--- /dev/null
+++ b/drivers/misc/pvpanic/Kconfig
@@ -0,0 +1,7 @@
+config PVPANIC
+ tristate "pvpanic device support"
+ depends on HAS_IOMEM && (ACPI || OF)
+ help
+ This driver provides support for the pvpanic device. pvpanic is
+ a paravirtualized device provided by QEMU; it lets a virtual machine
+ (guest) communicate panic events to the host.
diff --git a/drivers/misc/pvpanic/Makefile b/drivers/misc/pvpanic/Makefile
new file mode 100644
index 0000000..6394224
--- /dev/null
+++ b/drivers/misc/pvpanic/Makefile
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# Copyright (c) 2018 ZTE Ltd.
+
+obj-$(CONFIG_PVPANIC) += pvpanic.o
diff --git a/drivers/misc/pvpanic.c b/drivers/misc/pvpanic/pvpanic.c
similarity index 100%
rename from drivers/misc/pvpanic.c
rename to drivers/misc/pvpanic/pvpanic.c
--
1.8.3.1
^ permalink raw reply related [flat|nested] 8+ messages in thread* [PATCH V3 2/6] misc/pvpanic: Add pvpanic driver framework
2019-01-23 15:47 [PATCH V3 0/6] add pvpanic driver framework Peng Hao
2019-01-23 15:47 ` [PATCH V3 1/6] misc/pvpanic: preparing for " Peng Hao
@ 2019-01-23 15:47 ` Peng Hao
2019-01-23 15:47 ` [PATCH V3 3/6] misc/pvpanic: add API for " Peng Hao
` (3 subsequent siblings)
5 siblings, 0 replies; 8+ messages in thread
From: Peng Hao @ 2019-01-23 15:47 UTC (permalink / raw)
To: gregkh, arnd, andy.shevchenko; +Cc: linux-kernel, Peng Hao
Add pvpanic driver framework. Follow-up patches will split the original
pvpanic acpi/of driver as the two seperate files and modify code to
adapt the framework.
Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
---
drivers/misc/pvpanic/pvpanic.c | 171 ++++++++++-------------------------------
1 file changed, 39 insertions(+), 132 deletions(-)
diff --git a/drivers/misc/pvpanic/pvpanic.c b/drivers/misc/pvpanic/pvpanic.c
index 595ac06..6380540 100644
--- a/drivers/misc/pvpanic/pvpanic.c
+++ b/drivers/misc/pvpanic/pvpanic.c
@@ -8,15 +8,20 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-#include <linux/acpi.h>
+#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
#include <linux/platform_device.h>
#include <linux/types.h>
-static void __iomem *base;
+static struct {
+ struct platform_device *pdev;
+ void __iomem *base;
+ bool is_ioport;
+} pvpanic_data = {
+ .pdev = NULL,
+ .is_ioport = false,
+};
#define PVPANIC_PANICKED (1 << 0)
@@ -27,7 +32,7 @@
static void
pvpanic_send_event(unsigned int event)
{
- iowrite8(event, base);
+ iowrite8(event, pvpanic_data.base);
}
static int
@@ -43,150 +48,52 @@
.priority = 1, /* let this called before broken drm_fb_helper */
};
-#ifdef CONFIG_ACPI
-static int pvpanic_add(struct acpi_device *device);
-static int pvpanic_remove(struct acpi_device *device);
-
-static const struct acpi_device_id pvpanic_device_ids[] = {
- { "QEMU0001", 0 },
- { "", 0 }
-};
-MODULE_DEVICE_TABLE(acpi, pvpanic_device_ids);
-
-static struct acpi_driver pvpanic_driver = {
- .name = "pvpanic",
- .class = "QEMU",
- .ids = pvpanic_device_ids,
- .ops = {
- .add = pvpanic_add,
- .remove = pvpanic_remove,
- },
- .owner = THIS_MODULE,
-};
-
-static acpi_status
-pvpanic_walk_resources(struct acpi_resource *res, void *context)
+static int pvpanic_platform_probe(struct platform_device *pdev)
{
- struct resource r;
-
- if (acpi_dev_resource_io(res, &r)) {
- base = ioport_map(r.start, resource_size(&r));
- return AE_OK;
- } else if (acpi_dev_resource_memory(res, &r)) {
- base = ioremap(r.start, resource_size(&r));
- return AE_OK;
+ struct device *dev = &pdev->dev;
+ struct resource *res;
+ void __iomem *base;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (res) {
+ base = devm_ioremap_resource(dev, res);
+ if (IS_ERR(base))
+ return -ENODEV;
+ } else {
+ res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+ if (!res)
+ return -ENODEV;
+
+ base = ioport_map(res->start, resource_size(res));
+ if (!base)
+ return -ENODEV;
+ pvpanic_data.is_ioport = true;
}
- return AE_ERROR;
-}
-
-static int pvpanic_add(struct acpi_device *device)
-{
- int ret;
-
- ret = acpi_bus_get_status(device);
- if (ret < 0)
- return ret;
-
- if (!device->status.enabled || !device->status.functional)
- return -ENODEV;
-
- acpi_walk_resources(device->handle, METHOD_NAME__CRS,
- pvpanic_walk_resources, NULL);
-
- if (!base)
- return -ENODEV;
-
+ pvpanic_data.base = base;
atomic_notifier_chain_register(&panic_notifier_list,
&pvpanic_panic_nb);
return 0;
}
-static int pvpanic_remove(struct acpi_device *device)
+static int pvpanic_platform_remove(struct platform_device *pdev)
{
-
atomic_notifier_chain_unregister(&panic_notifier_list,
&pvpanic_panic_nb);
- iounmap(base);
-
- return 0;
-}
-
-static int pvpanic_register_acpi_driver(void)
-{
- return acpi_bus_register_driver(&pvpanic_driver);
-}
-
-static void pvpanic_unregister_acpi_driver(void)
-{
- acpi_bus_unregister_driver(&pvpanic_driver);
-}
-#else
-static int pvpanic_register_acpi_driver(void)
-{
- return -ENODEV;
-}
-static void pvpanic_unregister_acpi_driver(void) {}
-#endif
-
-static int pvpanic_mmio_probe(struct platform_device *pdev)
-{
- struct resource *mem;
-
- mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!mem)
- return -EINVAL;
-
- base = devm_ioremap_resource(&pdev->dev, mem);
- if (IS_ERR(base))
- return PTR_ERR(base);
-
- atomic_notifier_chain_register(&panic_notifier_list,
- &pvpanic_panic_nb);
-
- return 0;
-}
-
-static int pvpanic_mmio_remove(struct platform_device *pdev)
-{
-
- atomic_notifier_chain_unregister(&panic_notifier_list,
- &pvpanic_panic_nb);
+ if (pvpanic_data.is_ioport)
+ iounmap(pvpanic_data.base);
return 0;
}
-static const struct of_device_id pvpanic_mmio_match[] = {
- { .compatible = "qemu,pvpanic-mmio", },
- {}
-};
-
-static struct platform_driver pvpanic_mmio_driver = {
+static struct platform_driver pvpanic_driver = {
+ .probe = pvpanic_platform_probe,
+ .remove = pvpanic_platform_remove,
.driver = {
- .name = "pvpanic-mmio",
- .of_match_table = pvpanic_mmio_match,
- },
- .probe = pvpanic_mmio_probe,
- .remove = pvpanic_mmio_remove,
+ .name = "pvpanic",
+ }
};
-static int __init pvpanic_mmio_init(void)
-{
- if (acpi_disabled)
- return platform_driver_register(&pvpanic_mmio_driver);
- else
- return pvpanic_register_acpi_driver();
-}
-
-static void __exit pvpanic_mmio_exit(void)
-{
- if (acpi_disabled)
- platform_driver_unregister(&pvpanic_mmio_driver);
- else
- pvpanic_unregister_acpi_driver();
-}
-
-module_init(pvpanic_mmio_init);
-module_exit(pvpanic_mmio_exit);
+module_platform_driver(pvpanic_driver);
--
1.8.3.1
^ permalink raw reply related [flat|nested] 8+ messages in thread* [PATCH V3 3/6] misc/pvpanic: add API for pvpanic driver framework
2019-01-23 15:47 [PATCH V3 0/6] add pvpanic driver framework Peng Hao
2019-01-23 15:47 ` [PATCH V3 1/6] misc/pvpanic: preparing for " Peng Hao
2019-01-23 15:47 ` [PATCH V3 2/6] misc/pvpanic: Add " Peng Hao
@ 2019-01-23 15:47 ` Peng Hao
2019-01-23 15:47 ` [PATCH V3 4/6] misc/pvpanic: add pvpanic acpi driver Peng Hao
` (2 subsequent siblings)
5 siblings, 0 replies; 8+ messages in thread
From: Peng Hao @ 2019-01-23 15:47 UTC (permalink / raw)
To: gregkh, arnd, andy.shevchenko; +Cc: linux-kernel, Peng Hao
Add pvpanic_add/remove_device API. Follow-up patches will use them to
add/remove specific drivers into framework.
Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
---
drivers/misc/pvpanic/pvpanic.c | 32 ++++++++++++++++++++++++++++++++
drivers/misc/pvpanic/pvpanic.h | 14 ++++++++++++++
2 files changed, 46 insertions(+)
create mode 100644 drivers/misc/pvpanic/pvpanic.h
diff --git a/drivers/misc/pvpanic/pvpanic.c b/drivers/misc/pvpanic/pvpanic.c
index 227ab4e..f842ee4 100644
--- a/drivers/misc/pvpanic/pvpanic.c
+++ b/drivers/misc/pvpanic/pvpanic.c
@@ -48,6 +48,38 @@
.priority = 1, /* let this called before broken drm_fb_helper */
};
+int pvpanic_add_device(struct device *dev, struct resource *res)
+{
+ struct platform_device *pdev;
+ int ret;
+
+ pdev = platform_device_alloc("pvpanic", -1);
+ if (!pdev)
+ return -ENOMEM;
+
+ pdev->dev.parent = dev;
+
+ ret = platform_device_add_resources(pdev, res, 1);
+ if (ret)
+ goto err;
+
+ ret = platform_device_add(pdev);
+ if (ret)
+ goto err;
+ pvpanic_data.pdev = pdev;
+
+ return 0;
+err:
+ platform_device_put(pdev);
+ return -1;
+}
+
+void pvpanic_remove_device(void)
+{
+ platform_device_unregister(pvpanic_data.pdev);
+ pvpanic_data.pdev = NULL;
+}
+
static int pvpanic_platform_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
diff --git a/drivers/misc/pvpanic/pvpanic.h b/drivers/misc/pvpanic/pvpanic.h
new file mode 100644
index 0000000..a72ca59
--- /dev/null
+++ b/drivers/misc/pvpanic/pvpanic.h
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* pvpanic driver framework header file
+ *
+ * Copyright (C) 2019 ZTE Ltd.
+ * Author: Peng Hao <peng.hao2@zte.com.cn>
+ */
+
+#ifndef __DRIVERS_MISC_PVPANIC_H
+#define __DRIVERS_MISC_PVPANIC_H
+
+extern int pvpanic_add_device(struct device *dev, struct resource *res);
+extern void pvpanic_remove_device(void);
+
+#endif
--
1.8.3.1
^ permalink raw reply related [flat|nested] 8+ messages in thread* [PATCH V3 4/6] misc/pvpanic: add pvpanic acpi driver
2019-01-23 15:47 [PATCH V3 0/6] add pvpanic driver framework Peng Hao
` (2 preceding siblings ...)
2019-01-23 15:47 ` [PATCH V3 3/6] misc/pvpanic: add API for " Peng Hao
@ 2019-01-23 15:47 ` Peng Hao
2019-01-23 7:34 ` Greg KH
2019-01-23 15:47 ` [PATCH V3 5/6] misc/pvpanic: add pvpanic mmio driver Peng Hao
2019-01-23 15:47 ` [PATCH V3 6/6] misc/pvpanic: add new pvpanic pci driver Peng Hao
5 siblings, 1 reply; 8+ messages in thread
From: Peng Hao @ 2019-01-23 15:47 UTC (permalink / raw)
To: gregkh, arnd, andy.shevchenko; +Cc: linux-kernel, Peng Hao
Make pvpanic acpi driver as seperate file and modify code
in order to adapt the framework.
Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
---
drivers/misc/pvpanic/Kconfig | 9 +++++
drivers/misc/pvpanic/Makefile | 1 +
drivers/misc/pvpanic/pvpanic-acpi.c | 77 +++++++++++++++++++++++++++++++++++++
3 files changed, 87 insertions(+)
create mode 100644 drivers/misc/pvpanic/pvpanic-acpi.c
diff --git a/drivers/misc/pvpanic/Kconfig b/drivers/misc/pvpanic/Kconfig
index 3e612c6..d274130 100644
--- a/drivers/misc/pvpanic/Kconfig
+++ b/drivers/misc/pvpanic/Kconfig
@@ -5,3 +5,12 @@ config PVPANIC
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.
+
+if PVPANIC
+
+config PVPANIC_ACPI
+ tristate "pvpanic acpi driver"
+ depends on ACPI
+ default PVPANIC
+
+endif
diff --git a/drivers/misc/pvpanic/Makefile b/drivers/misc/pvpanic/Makefile
index 6394224..c5b73ca 100644
--- a/drivers/misc/pvpanic/Makefile
+++ b/drivers/misc/pvpanic/Makefile
@@ -3,3 +3,4 @@
# Copyright (c) 2018 ZTE Ltd.
obj-$(CONFIG_PVPANIC) += pvpanic.o
+obj-$(CONFIG_PVPANIC_ACPI) += pvpanic-acpi.o
diff --git a/drivers/misc/pvpanic/pvpanic-acpi.c b/drivers/misc/pvpanic/pvpanic-acpi.c
new file mode 100644
index 0000000..a6153fa
--- /dev/null
+++ b/drivers/misc/pvpanic/pvpanic-acpi.c
@@ -0,0 +1,77 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * pvpanic acpi driver.
+ *
+ * Copyright (C) 2019 ZTE Ltd.
+ * Author: Peng Hao
+ */
+#include <linux/acpi.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include "pvpanic.h"
+
+static int pvpanic_add(struct acpi_device *device);
+static int pvpanic_remove(struct acpi_device *device);
+
+static const struct acpi_device_id pvpanic_device_ids[] = {
+ { "QEMU0001", 0 },
+ { "", 0 }
+};
+MODULE_DEVICE_TABLE(acpi, pvpanic_device_ids);
+
+static struct acpi_driver pvpanic_driver = {
+ .name = "pvpanic",
+ .class = "QEMU",
+ .ids = pvpanic_device_ids,
+ .ops = {
+ .add = pvpanic_add,
+ .remove = pvpanic_remove,
+ },
+ .owner = THIS_MODULE,
+};
+
+static acpi_status
+pvpanic_walk_resources(struct acpi_resource *res, void *context)
+{
+ struct resource r;
+ int ret = 0;
+ struct device *dev = context;
+
+ memset(&r, 0, sizeof(r));
+ if (acpi_dev_resource_io(res, &r) || acpi_dev_resource_memory(res, &r))
+ ret = pvpanic_add_device(dev, &r);
+
+ if (!ret)
+ return AE_OK;
+
+ return AE_ERROR;
+}
+static int pvpanic_add(struct acpi_device *device)
+{
+ int ret;
+ acpi_status status;
+
+ ret = acpi_bus_get_status(device);
+ if (ret < 0)
+ return ret;
+
+ if (!device->status.enabled || !device->status.functional)
+ return -ENODEV;
+
+ status = acpi_walk_resources(device->handle, METHOD_NAME__CRS,
+ pvpanic_walk_resources, &device->dev);
+
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
+
+ return 0;
+}
+
+static int pvpanic_remove(struct acpi_device *device)
+{
+ pvpanic_remove_device();
+ return 0;
+}
+
+module_acpi_driver(pvpanic_driver);
--
1.8.3.1
^ permalink raw reply related [flat|nested] 8+ messages in thread* Re: [PATCH V3 4/6] misc/pvpanic: add pvpanic acpi driver
2019-01-23 15:47 ` [PATCH V3 4/6] misc/pvpanic: add pvpanic acpi driver Peng Hao
@ 2019-01-23 7:34 ` Greg KH
0 siblings, 0 replies; 8+ messages in thread
From: Greg KH @ 2019-01-23 7:34 UTC (permalink / raw)
To: Peng Hao; +Cc: arnd, andy.shevchenko, linux-kernel
On Wed, Jan 23, 2019 at 11:47:26PM +0800, Peng Hao wrote:
> Make pvpanic acpi driver as seperate file and modify code
> in order to adapt the framework.
>
> Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
> ---
> drivers/misc/pvpanic/Kconfig | 9 +++++
> drivers/misc/pvpanic/Makefile | 1 +
> drivers/misc/pvpanic/pvpanic-acpi.c | 77 +++++++++++++++++++++++++++++++++++++
> 3 files changed, 87 insertions(+)
> create mode 100644 drivers/misc/pvpanic/pvpanic-acpi.c
>
> diff --git a/drivers/misc/pvpanic/Kconfig b/drivers/misc/pvpanic/Kconfig
> index 3e612c6..d274130 100644
> --- a/drivers/misc/pvpanic/Kconfig
> +++ b/drivers/misc/pvpanic/Kconfig
> @@ -5,3 +5,12 @@ config PVPANIC
> 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.
> +
> +if PVPANIC
> +
> +config PVPANIC_ACPI
> + tristate "pvpanic acpi driver"
> + depends on ACPI
> + default PVPANIC
Any reason you ignored the review comments I made for your v1
submission?
Please address those comments before you resend this again.
greg k-h
^ permalink raw reply [flat|nested] 8+ messages in thread
* [PATCH V3 5/6] misc/pvpanic: add pvpanic mmio driver
2019-01-23 15:47 [PATCH V3 0/6] add pvpanic driver framework Peng Hao
` (3 preceding siblings ...)
2019-01-23 15:47 ` [PATCH V3 4/6] misc/pvpanic: add pvpanic acpi driver Peng Hao
@ 2019-01-23 15:47 ` Peng Hao
2019-01-23 15:47 ` [PATCH V3 6/6] misc/pvpanic: add new pvpanic pci driver Peng Hao
5 siblings, 0 replies; 8+ messages in thread
From: Peng Hao @ 2019-01-23 15:47 UTC (permalink / raw)
To: gregkh, arnd, andy.shevchenko; +Cc: linux-kernel, Peng Hao
Make pvpanic mmio driver as seperate file and modify code
in order to adapt the framework.
Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
---
drivers/misc/pvpanic/Kconfig | 4 +++
drivers/misc/pvpanic/Makefile | 1 +
drivers/misc/pvpanic/pvpanic-of.c | 53 +++++++++++++++++++++++++++++++++++++++
3 files changed, 58 insertions(+)
create mode 100644 drivers/misc/pvpanic/pvpanic-of.c
diff --git a/drivers/misc/pvpanic/Kconfig b/drivers/misc/pvpanic/Kconfig
index d274130..47f8709 100644
--- a/drivers/misc/pvpanic/Kconfig
+++ b/drivers/misc/pvpanic/Kconfig
@@ -13,4 +13,8 @@ config PVPANIC_ACPI
depends on ACPI
default PVPANIC
+config PVPANIC_OF
+ tristate "pvpanic mmio driver"
+ depends on OF
+
endif
diff --git a/drivers/misc/pvpanic/Makefile b/drivers/misc/pvpanic/Makefile
index c5b73ca..63ef0db 100644
--- a/drivers/misc/pvpanic/Makefile
+++ b/drivers/misc/pvpanic/Makefile
@@ -4,3 +4,4 @@
obj-$(CONFIG_PVPANIC) += pvpanic.o
obj-$(CONFIG_PVPANIC_ACPI) += pvpanic-acpi.o
+obj-$(CONFIG_PVPANIC_OF) += pvpanic-of.o
diff --git a/drivers/misc/pvpanic/pvpanic-of.c b/drivers/misc/pvpanic/pvpanic-of.c
new file mode 100644
index 0000000..73ca5f3
--- /dev/null
+++ b/drivers/misc/pvpanic/pvpanic-of.c
@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * pvpanic of driver.
+ *
+ * Copyright (C) 2019 ZTE Ltd.
+ * Author: Peng Hao <peng.hao2@zte.com.cn>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/platform_device.h>
+#include <linux/types.h>
+#include "pvpanic.h"
+
+static int pvpanic_mmio_probe(struct platform_device *pdev)
+{
+ struct resource *res;
+ int ret;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -EINVAL;
+
+ ret = pvpanic_add_device(&pdev->dev, res);
+ if (ret)
+ return -ENODEV;
+
+ return 0;
+}
+
+static int pvpanic_mmio_remove(struct platform_device *pdev)
+{
+ pvpanic_remove_device();
+ return 0;
+}
+
+static const struct of_device_id pvpanic_mmio_match[] = {
+ { .compatible = "qemu,pvpanic-mmio", },
+ {}
+};
+
+static struct platform_driver pvpanic_mmio_driver = {
+ .driver = {
+ .name = "pvpanic-mmio",
+ .of_match_table = pvpanic_mmio_match,
+ },
+ .probe = pvpanic_mmio_probe,
+ .remove = pvpanic_mmio_remove,
+};
+
+module_platform_driver(pvpanic_mmio_driver);
--
1.8.3.1
^ permalink raw reply related [flat|nested] 8+ messages in thread* [PATCH V3 6/6] misc/pvpanic: add new pvpanic pci driver
2019-01-23 15:47 [PATCH V3 0/6] add pvpanic driver framework Peng Hao
` (4 preceding siblings ...)
2019-01-23 15:47 ` [PATCH V3 5/6] misc/pvpanic: add pvpanic mmio driver Peng Hao
@ 2019-01-23 15:47 ` Peng Hao
5 siblings, 0 replies; 8+ messages in thread
From: Peng Hao @ 2019-01-23 15:47 UTC (permalink / raw)
To: gregkh, arnd, andy.shevchenko; +Cc: linux-kernel, Peng Hao
Add new pvpanic pci driver to pvpanic driver framework.
Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
---
drivers/misc/pvpanic/Kconfig | 5 ++++
drivers/misc/pvpanic/Makefile | 1 +
drivers/misc/pvpanic/pvpanic-pci.c | 56 ++++++++++++++++++++++++++++++++++++++
3 files changed, 62 insertions(+)
create mode 100644 drivers/misc/pvpanic/pvpanic-pci.c
diff --git a/drivers/misc/pvpanic/Kconfig b/drivers/misc/pvpanic/Kconfig
index 47f8709..46b6e05 100644
--- a/drivers/misc/pvpanic/Kconfig
+++ b/drivers/misc/pvpanic/Kconfig
@@ -17,4 +17,9 @@ config PVPANIC_OF
tristate "pvpanic mmio driver"
depends on OF
+config PVPANIC_PCI
+ tristate "pvpanic pci driver"
+ depends on PCI
+ default PVPANIC
+
endif
diff --git a/drivers/misc/pvpanic/Makefile b/drivers/misc/pvpanic/Makefile
index 63ef0db..7c71f85 100644
--- a/drivers/misc/pvpanic/Makefile
+++ b/drivers/misc/pvpanic/Makefile
@@ -5,3 +5,4 @@
obj-$(CONFIG_PVPANIC) += pvpanic.o
obj-$(CONFIG_PVPANIC_ACPI) += pvpanic-acpi.o
obj-$(CONFIG_PVPANIC_OF) += pvpanic-of.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 0000000..b4f453b
--- /dev/null
+++ b/drivers/misc/pvpanic/pvpanic-pci.c
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * pvpanic acpi driver.
+ *
+ * Copyright (C) 2019 ZTE Ltd.
+ * Author: Peng Hao <peng.hao2@zte.com.cn>
+ */
+
+#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 0x0101
+
+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;
+
+ ret = pcim_enable_device(pdev);
+ if (ret < 0)
+ return ret;
+
+ memset(&res, 0, sizeof(res));
+ res.start = pci_resource_start(pdev, 0);
+ res.end = pci_resource_end(pdev, 0);
+ res.flags = IORESOURCE_MEM;
+ ret = pvpanic_add_device(&pdev->dev, &res);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static void pvpanic_pci_remove(struct pci_dev *pdev)
+{
+ pvpanic_remove_device();
+}
+
+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
^ permalink raw reply related [flat|nested] 8+ messages in thread