// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) /* * Copyright 2013-2016 Freescale Semiconductor Inc. * Copyright 2020 NXP * */ #include <linux/kernel.h> #include <linux/fsl/mc.h> #include "fsl-mc-private.h" /* * cache the DPRC version to reduce the number of commands * towards the mc firmware */ static u16 dprc_major_ver; static u16 dprc_minor_ver; /** * dprc_open() - Open DPRC object for use * @mc_io: Pointer to MC portal's I/O object * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' * @container_id: Container ID to open * @token: Returned token of DPRC object * * Return: '0' on Success; Error code otherwise. * * @warning Required before any operation on the object. */ int dprc_open(struct fsl_mc_io *mc_io, u32 cmd_flags, int container_id, u16 *token) { … } EXPORT_SYMBOL_GPL(…); /** * dprc_close() - Close the control session of the object * @mc_io: Pointer to MC portal's I/O object * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' * @token: Token of DPRC object * * After this function is called, no further operations are * allowed on the object without opening a new control session. * * Return: '0' on Success; Error code otherwise. */ int dprc_close(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token) { … } EXPORT_SYMBOL_GPL(…); /** * dprc_reset_container - Reset child container. * @mc_io: Pointer to MC portal's I/O object * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' * @token: Token of DPRC object * @child_container_id: ID of the container to reset * @options: 32 bit options: * - 0 (no bits set) - all the objects inside the container are * reset. The child containers are entered recursively and the * objects reset. All the objects (including the child containers) * are closed. * - bit 0 set - all the objects inside the container are reset. * However the child containers are not entered recursively. * This option is supported for API versions >= 6.5 * In case a software context crashes or becomes non-responsive, the parent * may wish to reset its resources container before the software context is * restarted. * * This routine informs all objects assigned to the child container that the * container is being reset, so they may perform any cleanup operations that are * needed. All objects handles that were owned by the child container shall be * closed. * * Note that such request may be submitted even if the child software context * has not crashed, but the resulting object cleanup operations will not be * aware of that. * * Return: '0' on Success; Error code otherwise. */ int dprc_reset_container(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token, int child_container_id, u32 options) { … } EXPORT_SYMBOL_GPL(…); /** * dprc_set_irq() - Set IRQ information for the DPRC to trigger an interrupt. * @mc_io: Pointer to MC portal's I/O object * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' * @token: Token of DPRC object * @irq_index: Identifies the interrupt index to configure * @irq_cfg: IRQ configuration * * Return: '0' on Success; Error code otherwise. */ int dprc_set_irq(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token, u8 irq_index, struct dprc_irq_cfg *irq_cfg) { … } /** * dprc_set_irq_enable() - Set overall interrupt state. * @mc_io: Pointer to MC portal's I/O object * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' * @token: Token of DPRC object * @irq_index: The interrupt index to configure * @en: Interrupt state - enable = 1, disable = 0 * * Allows GPP software to control when interrupts are generated. * Each interrupt can have up to 32 causes. The enable/disable control's the * overall interrupt state. if the interrupt is disabled no causes will cause * an interrupt. * * Return: '0' on Success; Error code otherwise. */ int dprc_set_irq_enable(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token, u8 irq_index, u8 en) { … } /** * dprc_set_irq_mask() - Set interrupt mask. * @mc_io: Pointer to MC portal's I/O object * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' * @token: Token of DPRC object * @irq_index: The interrupt index to configure * @mask: event mask to trigger interrupt; * each bit: * 0 = ignore event * 1 = consider event for asserting irq * * Every interrupt can have up to 32 causes and the interrupt model supports * masking/unmasking each cause independently * * Return: '0' on Success; Error code otherwise. */ int dprc_set_irq_mask(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token, u8 irq_index, u32 mask) { … } /** * dprc_get_irq_status() - Get the current status of any pending interrupts. * @mc_io: Pointer to MC portal's I/O object * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' * @token: Token of DPRC object * @irq_index: The interrupt index to configure * @status: Returned interrupts status - one bit per cause: * 0 = no interrupt pending * 1 = interrupt pending * * Return: '0' on Success; Error code otherwise. */ int dprc_get_irq_status(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token, u8 irq_index, u32 *status) { … } /** * dprc_clear_irq_status() - Clear a pending interrupt's status * @mc_io: Pointer to MC portal's I/O object * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' * @token: Token of DPRC object * @irq_index: The interrupt index to configure * @status: bits to clear (W1C) - one bit per cause: * 0 = don't change * 1 = clear status bit * * Return: '0' on Success; Error code otherwise. */ int dprc_clear_irq_status(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token, u8 irq_index, u32 status) { … } /** * dprc_get_attributes() - Obtains container attributes * @mc_io: Pointer to MC portal's I/O object * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' * @token: Token of DPRC object * @attr: Returned container attributes * * Return: '0' on Success; Error code otherwise. */ int dprc_get_attributes(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token, struct dprc_attributes *attr) { … } /** * dprc_get_obj_count() - Obtains the number of objects in the DPRC * @mc_io: Pointer to MC portal's I/O object * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' * @token: Token of DPRC object * @obj_count: Number of objects assigned to the DPRC * * Return: '0' on Success; Error code otherwise. */ int dprc_get_obj_count(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token, int *obj_count) { … } EXPORT_SYMBOL_GPL(…); /** * dprc_get_obj() - Get general information on an object * @mc_io: Pointer to MC portal's I/O object * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' * @token: Token of DPRC object * @obj_index: Index of the object to be queried (< obj_count) * @obj_desc: Returns the requested object descriptor * * The object descriptors are retrieved one by one by incrementing * obj_index up to (not including) the value of obj_count returned * from dprc_get_obj_count(). dprc_get_obj_count() must * be called prior to dprc_get_obj(). * * Return: '0' on Success; Error code otherwise. */ int dprc_get_obj(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token, int obj_index, struct fsl_mc_obj_desc *obj_desc) { … } EXPORT_SYMBOL_GPL(…); /** * dprc_set_obj_irq() - Set IRQ information for object to trigger an interrupt. * @mc_io: Pointer to MC portal's I/O object * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' * @token: Token of DPRC object * @obj_type: Type of the object to set its IRQ * @obj_id: ID of the object to set its IRQ * @irq_index: The interrupt index to configure * @irq_cfg: IRQ configuration * * Return: '0' on Success; Error code otherwise. */ int dprc_set_obj_irq(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token, char *obj_type, int obj_id, u8 irq_index, struct dprc_irq_cfg *irq_cfg) { … } EXPORT_SYMBOL_GPL(…); /** * dprc_get_obj_region() - Get region information for a specified object. * @mc_io: Pointer to MC portal's I/O object * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' * @token: Token of DPRC object * @obj_type: Object type as returned in dprc_get_obj() * @obj_id: Unique object instance as returned in dprc_get_obj() * @region_index: The specific region to query * @region_desc: Returns the requested region descriptor * * Return: '0' on Success; Error code otherwise. */ int dprc_get_obj_region(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token, char *obj_type, int obj_id, u8 region_index, struct dprc_region_desc *region_desc) { … } EXPORT_SYMBOL_GPL(…); /** * dprc_get_api_version - Get Data Path Resource Container API version * @mc_io: Pointer to Mc portal's I/O object * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' * @major_ver: Major version of Data Path Resource Container API * @minor_ver: Minor version of Data Path Resource Container API * * Return: '0' on Success; Error code otherwise. */ int dprc_get_api_version(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 *major_ver, u16 *minor_ver) { … } /** * dprc_get_container_id - Get container ID associated with a given portal. * @mc_io: Pointer to Mc portal's I/O object * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' * @container_id: Requested container id * * Return: '0' on Success; Error code otherwise. */ int dprc_get_container_id(struct fsl_mc_io *mc_io, u32 cmd_flags, int *container_id) { … } /** * dprc_get_connection() - Get connected endpoint and link status if connection * exists. * @mc_io: Pointer to MC portal's I/O object * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' * @token: Token of DPRC object * @endpoint1: Endpoint 1 configuration parameters * @endpoint2: Returned endpoint 2 configuration parameters * @state: Returned link state: * 1 - link is up; * 0 - link is down; * -1 - no connection (endpoint2 information is irrelevant) * * Return: '0' on Success; -ENOTCONN if connection does not exist. */ int dprc_get_connection(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token, const struct dprc_endpoint *endpoint1, struct dprc_endpoint *endpoint2, int *state) { … }
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