/** * STM32_PERIPHERAL_FIREWALL: This type of firewall protects peripherals * STM32_MEMORY_FIREWALL: This type of firewall protects memories/subsets of memory * zones * STM32_NOTYPE_FIREWALL: Undefined firewall type
*/
/** * struct stm32_firewall_controller - Information on firewall controller supplying services * * @name: Name of the firewall controller * @dev: Device reference of the firewall controller * @mmio: Base address of the firewall controller * @entry: List entry of the firewall controller list * @type: Type of firewall * @max_entries: Number of entries covered by the firewall * @grant_access: Callback used to grant access for a device access against a * firewall controller * @release_access: Callback used to release resources taken by a device when access was * granted * @grant_memory_range_access: Callback used to grant access for a device to a given memory region
*/ struct stm32_firewall_controller { constchar *name; struct device *dev; void __iomem *mmio; struct list_head entry; unsignedint type; unsignedint max_entries;
/** * stm32_firewall_controller_register - Register a firewall controller to the STM32 firewall * framework * @firewall_controller: Firewall controller to register * * Returns 0 in case of success or -ENODEV if no controller was given.
*/ int stm32_firewall_controller_register(struct stm32_firewall_controller *firewall_controller);
/** * stm32_firewall_controller_unregister - Unregister a firewall controller from the STM32 * firewall framework * @firewall_controller: Firewall controller to unregister
*/ void stm32_firewall_controller_unregister(struct stm32_firewall_controller *firewall_controller);
/** * stm32_firewall_populate_bus - Populate device tree nodes that have a correct firewall * configuration. This is used at boot-time only, as a sanity check * between device tree and firewalls hardware configurations to * prevent a kernel crash when a device driver is not granted access * * @firewall_controller: Firewall controller which nodes will be populated or not * * Returns 0 in case of success or appropriate errno code if error occurred.
*/ int stm32_firewall_populate_bus(struct stm32_firewall_controller *firewall_controller);
#endif/* _STM32_FIREWALL_H */
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