[V4,2/6] modpost: add support for mdev class id
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Message ID 20191017104836.32464-3-jasowang@redhat.com
State Superseded
Headers show
Series
  • mdev based hardware virtio offloading support
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Commit Message

Jason Wang Oct. 17, 2019, 10:48 a.m. UTC
Add support to parse mdev class id table.

Signed-off-by: Jason Wang <jasowang@redhat.com>
---
 drivers/vfio/mdev/vfio_mdev.c     |  2 ++
 scripts/mod/devicetable-offsets.c |  3 +++
 scripts/mod/file2alias.c          | 10 ++++++++++
 3 files changed, 15 insertions(+)

Comments

Parav Pandit Oct. 20, 2019, 11:25 p.m. UTC | #1
> -----Original Message-----
> From: Jason Wang <jasowang@redhat.com>
> Sent: Thursday, October 17, 2019 5:49 AM
> To: kvm@vger.kernel.org; linux-s390@vger.kernel.org; linux-
> kernel@vger.kernel.org; dri-devel@lists.freedesktop.org; intel-
> gfx@lists.freedesktop.org; intel-gvt-dev@lists.freedesktop.org;
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> lingshan.zhu@intel.com; Ido Shamay <idos@mellanox.com>;
> eperezma@redhat.com; lulu@redhat.com; Parav Pandit
> <parav@mellanox.com>; christophe.de.dinechin@gmail.com;
> kevin.tian@intel.com; stefanha@redhat.com; Jason Wang
> <jasowang@redhat.com>
> Subject: [PATCH V4 2/6] modpost: add support for mdev class id
> 
> Add support to parse mdev class id table.
> 
> Signed-off-by: Jason Wang <jasowang@redhat.com>
> ---
>  drivers/vfio/mdev/vfio_mdev.c     |  2 ++
>  scripts/mod/devicetable-offsets.c |  3 +++
>  scripts/mod/file2alias.c          | 10 ++++++++++
>  3 files changed, 15 insertions(+)
> 
> diff --git a/drivers/vfio/mdev/vfio_mdev.c b/drivers/vfio/mdev/vfio_mdev.c
> index 7b24ee9cb8dd..cb701cd646f0 100644
> --- a/drivers/vfio/mdev/vfio_mdev.c
> +++ b/drivers/vfio/mdev/vfio_mdev.c
> @@ -125,6 +125,8 @@ static const struct mdev_class_id id_table[] = {
>  	{ 0 },
>  };
> 
> +MODULE_DEVICE_TABLE(mdev, id_table);
> +
>  static struct mdev_driver vfio_mdev_driver = {
>  	.name	= "vfio_mdev",
>  	.probe	= vfio_mdev_probe,
> diff --git a/scripts/mod/devicetable-offsets.c b/scripts/mod/devicetable-
> offsets.c
> index 054405b90ba4..6cbb1062488a 100644
> --- a/scripts/mod/devicetable-offsets.c
> +++ b/scripts/mod/devicetable-offsets.c
> @@ -231,5 +231,8 @@ int main(void)
>  	DEVID(wmi_device_id);
>  	DEVID_FIELD(wmi_device_id, guid_string);
> 
> +	DEVID(mdev_class_id);
> +	DEVID_FIELD(mdev_class_id, id);
> +
>  	return 0;
>  }
> diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c index
> c91eba751804..d365dfe7c718 100644
> --- a/scripts/mod/file2alias.c
> +++ b/scripts/mod/file2alias.c
> @@ -1335,6 +1335,15 @@ static int do_wmi_entry(const char *filename,
> void *symval, char *alias)
>  	return 1;
>  }
> 
> +/* looks like: "mdev:cN" */
> +static int do_mdev_entry(const char *filename, void *symval, char
> +*alias) {
> +	DEF_FIELD(symval, mdev_class_id, id);
> +
> +	sprintf(alias, "mdev:c%02X", id);
> +	return 1;
> +}
> +
>  /* Does namelen bytes of name exactly match the symbol? */  static bool
> sym_is(const char *name, unsigned namelen, const char *symbol)  { @@ -
> 1407,6 +1416,7 @@ static const struct devtable devtable[] = {
>  	{"typec", SIZE_typec_device_id, do_typec_entry},
>  	{"tee", SIZE_tee_client_device_id, do_tee_entry},
>  	{"wmi", SIZE_wmi_device_id, do_wmi_entry},
> +	{"mdev", SIZE_mdev_class_id, do_mdev_entry},
>  };
> 
>  /* Create MODULE_ALIAS() statements.
> --
> 2.19.1
Reviewed-by: Parav Pandit <parav@mellanox.com>

Patch
diff mbox series

diff --git a/drivers/vfio/mdev/vfio_mdev.c b/drivers/vfio/mdev/vfio_mdev.c
index 7b24ee9cb8dd..cb701cd646f0 100644
--- a/drivers/vfio/mdev/vfio_mdev.c
+++ b/drivers/vfio/mdev/vfio_mdev.c
@@ -125,6 +125,8 @@  static const struct mdev_class_id id_table[] = {
 	{ 0 },
 };
 
+MODULE_DEVICE_TABLE(mdev, id_table);
+
 static struct mdev_driver vfio_mdev_driver = {
 	.name	= "vfio_mdev",
 	.probe	= vfio_mdev_probe,
diff --git a/scripts/mod/devicetable-offsets.c b/scripts/mod/devicetable-offsets.c
index 054405b90ba4..6cbb1062488a 100644
--- a/scripts/mod/devicetable-offsets.c
+++ b/scripts/mod/devicetable-offsets.c
@@ -231,5 +231,8 @@  int main(void)
 	DEVID(wmi_device_id);
 	DEVID_FIELD(wmi_device_id, guid_string);
 
+	DEVID(mdev_class_id);
+	DEVID_FIELD(mdev_class_id, id);
+
 	return 0;
 }
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index c91eba751804..d365dfe7c718 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -1335,6 +1335,15 @@  static int do_wmi_entry(const char *filename, void *symval, char *alias)
 	return 1;
 }
 
+/* looks like: "mdev:cN" */
+static int do_mdev_entry(const char *filename, void *symval, char *alias)
+{
+	DEF_FIELD(symval, mdev_class_id, id);
+
+	sprintf(alias, "mdev:c%02X", id);
+	return 1;
+}
+
 /* Does namelen bytes of name exactly match the symbol? */
 static bool sym_is(const char *name, unsigned namelen, const char *symbol)
 {
@@ -1407,6 +1416,7 @@  static const struct devtable devtable[] = {
 	{"typec", SIZE_typec_device_id, do_typec_entry},
 	{"tee", SIZE_tee_client_device_id, do_tee_entry},
 	{"wmi", SIZE_wmi_device_id, do_wmi_entry},
+	{"mdev", SIZE_mdev_class_id, do_mdev_entry},
 };
 
 /* Create MODULE_ALIAS() statements.