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Message-Id: <1433516792-16397-2-git-send-email-eric.auger@linaro.org>
Date: Fri, 5 Jun 2015 17:06:29 +0200
From: Eric Auger <eric.auger@...aro.org>
To: eric.auger@...com, eric.auger@...aro.org,
linux-arm-kernel@...ts.infradead.org, alex.williamson@...hat.com,
b.reynal@...tualopensystems.com
Cc: christoffer.dall@...aro.org, linux-kernel@...r.kernel.org,
patches@...aro.org, agraf@...e.de
Subject: [PATCH v2 1/4] VFIO: platform: add reset struct and lookup table
This patch introduces the vfio_platform_reset_combo struct that
stores all the information useful to handle the reset modality:
compat string, name of the reset function, name of the module that
implements the reset function. A lookup table of such structures
is added, currently containing a single sentinel element. A new
type field is added in vfio_platform_device to store what kind of
reset is associated to the device, if any.
Signed-off-by: Eric Auger <eric.auger@...aro.org>
---
drivers/vfio/platform/vfio_platform_common.c | 6 ++++++
drivers/vfio/platform/vfio_platform_private.h | 12 ++++++++++++
2 files changed, 18 insertions(+)
diff --git a/drivers/vfio/platform/vfio_platform_common.c b/drivers/vfio/platform/vfio_platform_common.c
index abcff7a..d970776 100644
--- a/drivers/vfio/platform/vfio_platform_common.c
+++ b/drivers/vfio/platform/vfio_platform_common.c
@@ -25,6 +25,12 @@
static DEFINE_MUTEX(driver_lock);
+static const struct vfio_platform_reset_combo reset_lookup_table[] = {
+ {
+ .type = VFIO_PLATFORM_RESET_TYPE_MAX
+ },
+};
+
static int vfio_platform_regions_init(struct vfio_platform_device *vdev)
{
int cnt = 0, i;
diff --git a/drivers/vfio/platform/vfio_platform_private.h b/drivers/vfio/platform/vfio_platform_private.h
index 5d31e04..d864124 100644
--- a/drivers/vfio/platform/vfio_platform_private.h
+++ b/drivers/vfio/platform/vfio_platform_private.h
@@ -49,6 +49,10 @@ struct vfio_platform_region {
void __iomem *ioaddr;
};
+enum vfio_platform_reset_type {
+ VFIO_PLATFORM_RESET_TYPE_MAX /* last element */,
+};
+
struct vfio_platform_device {
struct vfio_platform_region *regions;
u32 num_regions;
@@ -56,6 +60,7 @@ struct vfio_platform_device {
u32 num_irqs;
int refcnt;
struct mutex igate;
+ enum vfio_platform_reset_type type;
/*
* These fields should be filled by the bus specific binder
@@ -69,6 +74,13 @@ struct vfio_platform_device {
int (*get_irq)(struct vfio_platform_device *vdev, int i);
};
+struct vfio_platform_reset_combo {
+ enum vfio_platform_reset_type type;
+ char *compat;
+ char *reset_function_name;
+ char *module_name;
+};
+
extern int vfio_platform_probe_common(struct vfio_platform_device *vdev,
struct device *dev);
extern struct vfio_platform_device *vfio_platform_remove_common
--
1.9.1
--
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