| Message ID | 89788e202bc91e2bc7f9c3c33eb91ab7478381ee.1632847120.git.rahul.singh@arm.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | PCI devices passthrough on Arm | expand |
On Tue, 28 Sep 2021, Rahul Singh wrote: > Based Linux commit a67e9472da423ec47a3586920b526ebaedf25fc3 > > Import the Linux helper of_property_read_u32_array. This function find > and read an array of 32 bit integers from a property. > > Signed-off-by: Rahul Singh <rahul.singh@arm.com> Reviewed-by: Stefano Stabellini <sstabellini@kernel.org> > --- > Change in v3: > - Modify commit message to include upstream Linux commit-id not stable > Linux commit-id > Change in v2: Patch introduced in v2 > --- > xen/include/xen/device_tree.h | 30 ++++++++++++++++++++++++++++++ > 1 file changed, 30 insertions(+) > > diff --git a/xen/include/xen/device_tree.h b/xen/include/xen/device_tree.h > index 1693fb8e8c..3ffe3eb3d2 100644 > --- a/xen/include/xen/device_tree.h > +++ b/xen/include/xen/device_tree.h > @@ -392,6 +392,36 @@ int dt_property_read_variable_u32_array(const struct dt_device_node *np, > const char *propname, u32 *out_values, > size_t sz_min, size_t sz_max); > > +/** > + * dt_property_read_u32_array - Find and read an array of 32 bit integers > + * from a property. > + * > + * @np: device node from which the property value is to be read. > + * @propname: name of the property to be searched. > + * @out_values: pointer to return value, modified only if return value is 0. > + * @sz: number of array elements to read > + * > + * Search for a property in a device node and read 32-bit value(s) from > + * it. > + * > + * Return: 0 on success, -EINVAL if the property does not exist, > + * -ENODATA if property does not have a value, and -EOVERFLOW if the > + * property data isn't large enough. > + * > + * The out_values is modified only if a valid u32 value can be decoded. > + */ > +static inline int dt_property_read_u32_array(const struct dt_device_node *np, > + const char *propname, > + u32 *out_values, size_t sz) > +{ > + int ret = dt_property_read_variable_u32_array(np, propname, out_values, > + sz, 0); > + if ( ret >= 0 ) > + return 0; > + else > + return ret; > +} > + > /** > * dt_property_read_bool - Check if a property exists > * @np: node to get the value > -- > 2.17.1 >
Hi Rahul, > On 28 Sep 2021, at 19:18, Rahul Singh <rahul.singh@arm.com> wrote: > > Based Linux commit a67e9472da423ec47a3586920b526ebaedf25fc3 > > Import the Linux helper of_property_read_u32_array. This function find > and read an array of 32 bit integers from a property. > > Signed-off-by: Rahul Singh <rahul.singh@arm.com> Reviewed-by: Bertrand Marquis <bertrand.marquis@arm.com> Cheers Bertrand > --- > Change in v3: > - Modify commit message to include upstream Linux commit-id not stable > Linux commit-id > Change in v2: Patch introduced in v2 > --- > xen/include/xen/device_tree.h | 30 ++++++++++++++++++++++++++++++ > 1 file changed, 30 insertions(+) > > diff --git a/xen/include/xen/device_tree.h b/xen/include/xen/device_tree.h > index 1693fb8e8c..3ffe3eb3d2 100644 > --- a/xen/include/xen/device_tree.h > +++ b/xen/include/xen/device_tree.h > @@ -392,6 +392,36 @@ int dt_property_read_variable_u32_array(const struct dt_device_node *np, > const char *propname, u32 *out_values, > size_t sz_min, size_t sz_max); > > +/** > + * dt_property_read_u32_array - Find and read an array of 32 bit integers > + * from a property. > + * > + * @np: device node from which the property value is to be read. > + * @propname: name of the property to be searched. > + * @out_values: pointer to return value, modified only if return value is 0. > + * @sz: number of array elements to read > + * > + * Search for a property in a device node and read 32-bit value(s) from > + * it. > + * > + * Return: 0 on success, -EINVAL if the property does not exist, > + * -ENODATA if property does not have a value, and -EOVERFLOW if the > + * property data isn't large enough. > + * > + * The out_values is modified only if a valid u32 value can be decoded. > + */ > +static inline int dt_property_read_u32_array(const struct dt_device_node *np, > + const char *propname, > + u32 *out_values, size_t sz) > +{ > + int ret = dt_property_read_variable_u32_array(np, propname, out_values, > + sz, 0); > + if ( ret >= 0 ) > + return 0; > + else > + return ret; > +} > + > /** > * dt_property_read_bool - Check if a property exists > * @np: node to get the value > -- > 2.17.1 >
diff --git a/xen/include/xen/device_tree.h b/xen/include/xen/device_tree.h index 1693fb8e8c..3ffe3eb3d2 100644 --- a/xen/include/xen/device_tree.h +++ b/xen/include/xen/device_tree.h @@ -392,6 +392,36 @@ int dt_property_read_variable_u32_array(const struct dt_device_node *np, const char *propname, u32 *out_values, size_t sz_min, size_t sz_max); +/** + * dt_property_read_u32_array - Find and read an array of 32 bit integers + * from a property. + * + * @np: device node from which the property value is to be read. + * @propname: name of the property to be searched. + * @out_values: pointer to return value, modified only if return value is 0. + * @sz: number of array elements to read + * + * Search for a property in a device node and read 32-bit value(s) from + * it. + * + * Return: 0 on success, -EINVAL if the property does not exist, + * -ENODATA if property does not have a value, and -EOVERFLOW if the + * property data isn't large enough. + * + * The out_values is modified only if a valid u32 value can be decoded. + */ +static inline int dt_property_read_u32_array(const struct dt_device_node *np, + const char *propname, + u32 *out_values, size_t sz) +{ + int ret = dt_property_read_variable_u32_array(np, propname, out_values, + sz, 0); + if ( ret >= 0 ) + return 0; + else + return ret; +} + /** * dt_property_read_bool - Check if a property exists * @np: node to get the value
Based Linux commit a67e9472da423ec47a3586920b526ebaedf25fc3 Import the Linux helper of_property_read_u32_array. This function find and read an array of 32 bit integers from a property. Signed-off-by: Rahul Singh <rahul.singh@arm.com> --- Change in v3: - Modify commit message to include upstream Linux commit-id not stable Linux commit-id Change in v2: Patch introduced in v2 --- xen/include/xen/device_tree.h | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+)