diff options
| author | Nipun Gupta <nipun.gupta@amd.com> | 2023-03-13 18:56:36 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-03-29 12:26:32 +0200 |
| commit | 48a6c7bced2a781c911497f073347bec5ab4d7a5 (patch) | |
| tree | 953e725238c48da61dceebf4d652ea52fdb8db38 /include/linux/cdx | |
| parent | 2a226927d9b836ddec674aebbcea311727d04240 (diff) | |
cdx: add device attributes
Create sysfs entry for CDX devices.
Sysfs entries provided in each of the CDX device detected by
the CDX controller
- vendor id
- device id
- remove
- reset of the device.
- driver override
Signed-off-by: Puneet Gupta <puneet.gupta@amd.com>
Signed-off-by: Nipun Gupta <nipun.gupta@amd.com>
Signed-off-by: Tarak Reddy <tarak.reddy@amd.com>
Reviewed-by: Pieter Jansen van Vuuren <pieter.jansen-van-vuuren@amd.com>
Tested-by: Nikhil Agarwal <nikhil.agarwal@amd.com>
Link: https://lore.kernel.org/r/20230313132636.31850-8-nipun.gupta@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/cdx')
| -rw-r--r-- | include/linux/cdx/cdx_bus.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/include/linux/cdx/cdx_bus.h b/include/linux/cdx/cdx_bus.h index d134e0104724..35ef41d8a61a 100644 --- a/include/linux/cdx/cdx_bus.h +++ b/include/linux/cdx/cdx_bus.h @@ -21,8 +21,20 @@ /* Forward declaration for CDX controller */ struct cdx_controller; +enum { + CDX_DEV_RESET_CONF, +}; + +struct cdx_device_config { + u8 type; +}; + typedef int (*cdx_scan_cb)(struct cdx_controller *cdx); +typedef int (*cdx_dev_configure_cb)(struct cdx_controller *cdx, + u8 bus_num, u8 dev_num, + struct cdx_device_config *dev_config); + /** * CDX_DEVICE_DRIVER_OVERRIDE - macro used to describe a CDX device with * override_only flags. @@ -39,9 +51,12 @@ typedef int (*cdx_scan_cb)(struct cdx_controller *cdx); /** * struct cdx_ops - Callbacks supported by CDX controller. * @scan: scan the devices on the controller + * @dev_configure: configuration like reset, master_enable, + * msi_config etc for a CDX device */ struct cdx_ops { cdx_scan_cb scan; + cdx_dev_configure_cb dev_configure; }; /** @@ -101,6 +116,8 @@ struct cdx_device { * @probe: Function called when a device is added * @remove: Function called when a device is removed * @shutdown: Function called at shutdown time to quiesce the device + * @reset_prepare: Function called before is reset to notify driver + * @reset_done: Function called after reset is complete to notify driver * @driver_managed_dma: Device driver doesn't use kernel DMA API for DMA. * For most device drivers, no need to care about this flag * as long as all DMAs are handled through the kernel DMA API. @@ -115,6 +132,8 @@ struct cdx_driver { int (*probe)(struct cdx_device *dev); int (*remove)(struct cdx_device *dev); void (*shutdown)(struct cdx_device *dev); + void (*reset_prepare)(struct cdx_device *dev); + void (*reset_done)(struct cdx_device *dev); bool driver_managed_dma; }; @@ -144,4 +163,12 @@ void cdx_driver_unregister(struct cdx_driver *cdx_driver); extern struct bus_type cdx_bus_type; +/** + * cdx_dev_reset - Reset CDX device + * @dev: device pointer + * + * Return: 0 for success, -errno on failure + */ +int cdx_dev_reset(struct device *dev); + #endif /* _CDX_BUS_H_ */ |