include/linux/ipa_uc_offload.h - kernel/msm-4.9 - Gitiles

 /* Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 and
  * only version 2 as published by the Free Software Foundation.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  */

 #ifndef _IPA_UC_OFFLOAD_H_
 #define _IPA_UC_OFFLOAD_H_

 #include <linux/ipa.h>

 /**
  * enum ipa_uc_offload_proto
  * Protocol type: either WDI or Neutrino
  *
  * @IPA_UC_WDI: wdi Protocol
  * @IPA_UC_NTN: Neutrino Protocol
  */
 enum ipa_uc_offload_proto {
 	IPA_UC_INVALID = 0,
 	IPA_UC_WDI = 1,
 	IPA_UC_NTN = 2,
 	IPA_UC_MAX_PROT_SIZE
 };

 /**
  * struct ipa_hdr_info - Header to install on IPA HW
  *
  * @hdr: header to install on IPA HW
  * @hdr_len: length of header
  * @dst_mac_addr_offset: destination mac address offset
  * @hdr_type: layer two header type
  */
 struct ipa_hdr_info {
 	u8 *hdr;
 	u8 hdr_len;
 	u8 dst_mac_addr_offset;
 	enum ipa_hdr_l2_type hdr_type;
 };

 /**
  * struct ipa_uc_offload_intf_params - parameters for uC offload
  *	interface registration
  *
  * @netdev_name: network interface name
  * @notify:	callback for exception/embedded packets
  * @priv: callback cookie
  * @hdr_info: header information
  * @meta_data: meta data if any
  * @meta_data_mask: meta data mask
  * @proto: uC offload protocol type
  * @alt_dst_pipe: alternate routing output pipe
  */
 struct ipa_uc_offload_intf_params {
 	const char *netdev_name;
 	ipa_notify_cb notify;
 	void *priv;
 	struct ipa_hdr_info hdr_info[IPA_IP_MAX];
 	u8 is_meta_data_valid;
 	u32 meta_data;
 	u32 meta_data_mask;
 	enum ipa_uc_offload_proto proto;
 	enum ipa_client_type alt_dst_pipe;
 };

 /**
  * struct ntn_buff_smmu_map -  IPA iova->pa SMMU mapping
  * @iova: virtual address of the data buffer
  * @pa: physical address of the data buffer
  */
 struct ntn_buff_smmu_map {
 	dma_addr_t iova;
 	phys_addr_t pa;
 };

 /**
  * struct  ipa_ntn_setup_info - NTN TX/Rx configuration
  * @client: type of "client" (IPA_CLIENT_ODU#_PROD/CONS)
  * @smmu_enabled: SMMU is enabled for uC or not
  * @ring_base_pa: physical address of the base of the Tx/Rx ring
  * @ring_base_iova: virtual address of the base of the Tx/Rx ring
  * @ring_base_sgt:Scatter table for ntn_rings,contains valid non NULL
  *			value when ENAC S1-SMMU enabed, else NULL.
  * @ntn_ring_size: size of the Tx/Rx ring (in terms of elements)
  * @buff_pool_base_pa: physical address of the base of the Tx/Rx buffer pool
  * @buff_pool_base_iova: virtual address of the base of the Tx/Rx buffer pool
  * @buff_pool_base_sgt: Scatter table for buffer pools,contains valid non NULL
  *			 value when EMAC S1-SMMU enabed, else NULL.
  * @num_buffers: Rx/Tx buffer pool size (in terms of elements)
  * @data_buff_size: size of the each data buffer allocated in DDR
  * @ntn_reg_base_ptr_pa: physical address of the Tx/Rx NTN Ring's
  *						tail pointer
  */
 struct ipa_ntn_setup_info {
 	enum ipa_client_type client;
 	bool smmu_enabled;
 	phys_addr_t ring_base_pa;
 	dma_addr_t ring_base_iova;
 	struct sg_table *ring_base_sgt;

 	u32 ntn_ring_size;

 	phys_addr_t buff_pool_base_pa;
 	dma_addr_t buff_pool_base_iova;
 	struct sg_table *buff_pool_base_sgt;

 	struct ntn_buff_smmu_map *data_buff_list;

 	u32 num_buffers;

 	u32 data_buff_size;

 	phys_addr_t ntn_reg_base_ptr_pa;
 };

 /**
  * struct ipa_uc_offload_out_params - out parameters for uC offload
  *
  * @clnt_hndl: Handle that client need to pass during
  *	further operations
  */
 struct ipa_uc_offload_out_params {
 	u32 clnt_hndl;
 };

 /**
  * struct  ipa_ntn_conn_in_params - NTN TX/Rx connect parameters
  * @ul: parameters to connect UL pipe(from Neutrino to IPA)
  * @dl: parameters to connect DL pipe(from IPA to Neutrino)
  */
 struct ipa_ntn_conn_in_params {
 	struct ipa_ntn_setup_info ul;
 	struct ipa_ntn_setup_info dl;
 };

 /**
  * struct  ipa_ntn_conn_out_params - information provided
  *				to uC offload client
  * @ul_uc_db_pa: physical address of IPA uc doorbell for UL
  * @dl_uc_db_pa: physical address of IPA uc doorbell for DL
  * @clnt_hdl: opaque handle assigned to offload client
  */
 struct ipa_ntn_conn_out_params {
 	phys_addr_t ul_uc_db_pa;
 	phys_addr_t dl_uc_db_pa;
 };

 /**
  * struct  ipa_uc_offload_conn_in_params - information provided by
  *		uC offload client
  * @clnt_hndl: Handle that return as part of reg interface
  * @proto: Protocol to use for offload data path
  * @ntn: uC RX/Tx configuration info
  */
 struct ipa_uc_offload_conn_in_params {
 	u32 clnt_hndl;
 	union {
 		struct ipa_ntn_conn_in_params ntn;
 	} u;
 };

 /**
  * struct  ipa_uc_offload_conn_out_params - information provided
  *		to uC offload client
  * @ul_uc_db_pa: physical address of IPA uc doorbell for UL
  * @dl_uc_db_pa: physical address of IPA uc doorbell for DL
  * @clnt_hdl: opaque handle assigned to offload client
  */
 struct ipa_uc_offload_conn_out_params {
 	union {
 		struct ipa_ntn_conn_out_params ntn;
 	} u;
 };

 /**
  * struct  ipa_perf_profile - To set BandWidth profile
  *
  * @client: type of "client" (IPA_CLIENT_ODU#_PROD/CONS)
  * @max_supported_bw_mbps: maximum bandwidth needed (in Mbps)
  */
 struct ipa_perf_profile {
 	enum ipa_client_type client;
 	u32 max_supported_bw_mbps;
 };

 /**
  * struct  ipa_uc_ready_params - uC ready CB parameters
  * @is_uC_ready: uC loaded or not
  * @priv : callback cookie
  * @notify:	callback
  * @proto: uC offload protocol type
  */
 struct ipa_uc_ready_params {
 	bool is_uC_ready;
 	void *priv;
 	ipa_uc_ready_cb notify;
 	enum ipa_uc_offload_proto proto;
 };

 #if defined CONFIG_IPA || defined CONFIG_IPA3

 /**
  * ipa_uc_offload_reg_intf - Client should call this function to
  * init uC offload data path
  *
  * @init:	[in] initialization parameters
  *
  * Note: Should not be called from atomic context and only
  * after checking IPA readiness using ipa_register_ipa_ready_cb()
  *
  * @Return 0 on success, negative on failure
  */
 int ipa_uc_offload_reg_intf(
 	struct ipa_uc_offload_intf_params *in,
 	struct ipa_uc_offload_out_params *out);

 /**
  * ipa_uc_offload_cleanup - Client Driver should call this
  * function before unload and after disconnect
  *
  * @Return 0 on success, negative on failure
  */
 int ipa_uc_offload_cleanup(u32 clnt_hdl);

 /**
  * ipa_uc_offload_conn_pipes - Client should call this
  * function to connect uC pipe for offload data path
  *
  * @in:	[in] input parameters from client
  * @out: [out] output params to client
  *
  * Note: Should not be called from atomic context and only
  * after checking IPA readiness using ipa_register_ipa_ready_cb()
  *
  * @Return 0 on success, negative on failure
  */
 int ipa_uc_offload_conn_pipes(struct ipa_uc_offload_conn_in_params *in,
 			struct ipa_uc_offload_conn_out_params *out);

 /**
  * ipa_uc_offload_disconn_pipes() - Client should call this
  *		function to disconnect uC pipe to disable offload data path
  * @clnt_hdl:	[in] opaque client handle assigned by IPA to client
  *
  * Note: Should not be called from atomic context
  *
  * Returns: 0 on success, negative on failure
  */
 int ipa_uc_offload_disconn_pipes(u32 clnt_hdl);

 /**
  * ipa_set_perf_profile() - Client should call this function to
  *		set IPA clock Band Width based on data rates
  * @profile: [in] BandWidth profile to use
  *
  * Returns: 0 on success, negative on failure
  */
 int ipa_set_perf_profile(struct ipa_perf_profile *profile);


 /*
  * To register uC ready callback if uC not ready
  * and also check uC readiness
  * if uC not ready only, register callback
  */
 int ipa_uc_offload_reg_rdyCB(struct ipa_uc_ready_params *param);

 /*
  * To de-register uC ready callback
  */
 void ipa_uc_offload_dereg_rdyCB(enum ipa_uc_offload_proto proto);

 #else /* (CONFIG_IPA || CONFIG_IPA3) */

 static inline int ipa_uc_offload_reg_intf(
 		struct ipa_uc_offload_intf_params *in,
 		struct ipa_uc_offload_out_params *out)
 {
 	return -EPERM;
 }

 static inline int ipa_uC_offload_cleanup(u32 clnt_hdl)
 {
 	return -EPERM;
 }

 static inline int ipa_uc_offload_conn_pipes(
 		struct ipa_uc_offload_conn_in_params *in,
 		struct ipa_uc_offload_conn_out_params *out)
 {
 	return -EPERM;
 }

 static inline int ipa_uc_offload_disconn_pipes(u32 clnt_hdl)
 {
 	return -EPERM;
 }

 static inline int ipa_set_perf_profile(struct ipa_perf_profile *profile)
 {
 	return -EPERM;
 }

 static inline int ipa_uc_offload_reg_rdyCB(struct ipa_uc_ready_params *param)
 {
 	return -EPERM;
 }

 static void ipa_uc_offload_dereg_rdyCB(enum ipa_uc_offload_proto proto)
 {
 }

 #endif /* CONFIG_IPA3 */

 #endif /* _IPA_UC_OFFLOAD_H_ */
	/* Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License version 2 and
	* only version 2 as published by the Free Software Foundation.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*/

	#ifndef _IPA_UC_OFFLOAD_H_
	#define _IPA_UC_OFFLOAD_H_

	#include <linux/ipa.h>

	/**
	* enum ipa_uc_offload_proto
	* Protocol type: either WDI or Neutrino
	*
	* @IPA_UC_WDI: wdi Protocol
	* @IPA_UC_NTN: Neutrino Protocol
	*/
	enum ipa_uc_offload_proto {
	IPA_UC_INVALID = 0,
	IPA_UC_WDI = 1,
	IPA_UC_NTN = 2,
	IPA_UC_MAX_PROT_SIZE
	};

	/**
	* struct ipa_hdr_info - Header to install on IPA HW
	*
	* @hdr: header to install on IPA HW
	* @hdr_len: length of header
	* @dst_mac_addr_offset: destination mac address offset
	* @hdr_type: layer two header type
	*/
	struct ipa_hdr_info {
	u8 *hdr;
	u8 hdr_len;
	u8 dst_mac_addr_offset;
	enum ipa_hdr_l2_type hdr_type;
	};

	/**
	* struct ipa_uc_offload_intf_params - parameters for uC offload
	* interface registration
	*
	* @netdev_name: network interface name
	* @notify: callback for exception/embedded packets
	* @priv: callback cookie
	* @hdr_info: header information
	* @meta_data: meta data if any
	* @meta_data_mask: meta data mask
	* @proto: uC offload protocol type
	* @alt_dst_pipe: alternate routing output pipe
	*/
	struct ipa_uc_offload_intf_params {
	const char *netdev_name;
	ipa_notify_cb notify;
	void *priv;
	struct ipa_hdr_info hdr_info[IPA_IP_MAX];
	u8 is_meta_data_valid;
	u32 meta_data;
	u32 meta_data_mask;
	enum ipa_uc_offload_proto proto;
	enum ipa_client_type alt_dst_pipe;
	};

	/**
	* struct ntn_buff_smmu_map - IPA iova->pa SMMU mapping
	* @iova: virtual address of the data buffer
	* @pa: physical address of the data buffer
	*/
	struct ntn_buff_smmu_map {
	dma_addr_t iova;
	phys_addr_t pa;
	};

	/**
	* struct ipa_ntn_setup_info - NTN TX/Rx configuration
	* @client: type of "client" (IPA_CLIENT_ODU#_PROD/CONS)
	* @smmu_enabled: SMMU is enabled for uC or not
	* @ring_base_pa: physical address of the base of the Tx/Rx ring
	* @ring_base_iova: virtual address of the base of the Tx/Rx ring
	* @ring_base_sgt:Scatter table for ntn_rings,contains valid non NULL
	* value when ENAC S1-SMMU enabed, else NULL.
	* @ntn_ring_size: size of the Tx/Rx ring (in terms of elements)
	* @buff_pool_base_pa: physical address of the base of the Tx/Rx buffer pool
	* @buff_pool_base_iova: virtual address of the base of the Tx/Rx buffer pool
	* @buff_pool_base_sgt: Scatter table for buffer pools,contains valid non NULL
	* value when EMAC S1-SMMU enabed, else NULL.
	* @num_buffers: Rx/Tx buffer pool size (in terms of elements)
	* @data_buff_size: size of the each data buffer allocated in DDR
	* @ntn_reg_base_ptr_pa: physical address of the Tx/Rx NTN Ring's
	* tail pointer
	*/
	struct ipa_ntn_setup_info {
	enum ipa_client_type client;
	bool smmu_enabled;
	phys_addr_t ring_base_pa;
	dma_addr_t ring_base_iova;
	struct sg_table *ring_base_sgt;

	u32 ntn_ring_size;

	phys_addr_t buff_pool_base_pa;
	dma_addr_t buff_pool_base_iova;
	struct sg_table *buff_pool_base_sgt;

	struct ntn_buff_smmu_map *data_buff_list;

	u32 num_buffers;

	u32 data_buff_size;

	phys_addr_t ntn_reg_base_ptr_pa;
	};

	/**
	* struct ipa_uc_offload_out_params - out parameters for uC offload
	*
	* @clnt_hndl: Handle that client need to pass during
	* further operations
	*/
	struct ipa_uc_offload_out_params {
	u32 clnt_hndl;
	};

	/**
	* struct ipa_ntn_conn_in_params - NTN TX/Rx connect parameters
	* @ul: parameters to connect UL pipe(from Neutrino to IPA)
	* @dl: parameters to connect DL pipe(from IPA to Neutrino)
	*/
	struct ipa_ntn_conn_in_params {
	struct ipa_ntn_setup_info ul;
	struct ipa_ntn_setup_info dl;
	};

	/**
	* struct ipa_ntn_conn_out_params - information provided
	* to uC offload client
	* @ul_uc_db_pa: physical address of IPA uc doorbell for UL
	* @dl_uc_db_pa: physical address of IPA uc doorbell for DL
	* @clnt_hdl: opaque handle assigned to offload client
	*/
	struct ipa_ntn_conn_out_params {
	phys_addr_t ul_uc_db_pa;
	phys_addr_t dl_uc_db_pa;
	};

	/**
	* struct ipa_uc_offload_conn_in_params - information provided by
	* uC offload client
	* @clnt_hndl: Handle that return as part of reg interface
	* @proto: Protocol to use for offload data path
	* @ntn: uC RX/Tx configuration info
	*/
	struct ipa_uc_offload_conn_in_params {
	u32 clnt_hndl;
	union {
	struct ipa_ntn_conn_in_params ntn;
	} u;
	};

	/**
	* struct ipa_uc_offload_conn_out_params - information provided
	* to uC offload client
	* @ul_uc_db_pa: physical address of IPA uc doorbell for UL
	* @dl_uc_db_pa: physical address of IPA uc doorbell for DL
	* @clnt_hdl: opaque handle assigned to offload client
	*/
	struct ipa_uc_offload_conn_out_params {
	union {
	struct ipa_ntn_conn_out_params ntn;
	} u;
	};

	/**
	* struct ipa_perf_profile - To set BandWidth profile
	*
	* @client: type of "client" (IPA_CLIENT_ODU#_PROD/CONS)
	* @max_supported_bw_mbps: maximum bandwidth needed (in Mbps)
	*/
	struct ipa_perf_profile {
	enum ipa_client_type client;
	u32 max_supported_bw_mbps;
	};

	/**
	* struct ipa_uc_ready_params - uC ready CB parameters
	* @is_uC_ready: uC loaded or not
	* @priv : callback cookie
	* @notify: callback
	* @proto: uC offload protocol type
	*/
	struct ipa_uc_ready_params {
	bool is_uC_ready;
	void *priv;
	ipa_uc_ready_cb notify;
	enum ipa_uc_offload_proto proto;
	};

	#if defined CONFIG_IPA \|\| defined CONFIG_IPA3

	/**
	* ipa_uc_offload_reg_intf - Client should call this function to
	* init uC offload data path
	*
	* @init: [in] initialization parameters
	*
	* Note: Should not be called from atomic context and only
	* after checking IPA readiness using ipa_register_ipa_ready_cb()
	*
	* @Return 0 on success, negative on failure
	*/
	int ipa_uc_offload_reg_intf(
	struct ipa_uc_offload_intf_params *in,
	struct ipa_uc_offload_out_params *out);

	/**
	* ipa_uc_offload_cleanup - Client Driver should call this
	* function before unload and after disconnect
	*
	* @Return 0 on success, negative on failure
	*/
	int ipa_uc_offload_cleanup(u32 clnt_hdl);

	/**
	* ipa_uc_offload_conn_pipes - Client should call this
	* function to connect uC pipe for offload data path
	*
	* @in: [in] input parameters from client
	* @out: [out] output params to client
	*
	* Note: Should not be called from atomic context and only
	* after checking IPA readiness using ipa_register_ipa_ready_cb()
	*
	* @Return 0 on success, negative on failure
	*/
	int ipa_uc_offload_conn_pipes(struct ipa_uc_offload_conn_in_params *in,
	struct ipa_uc_offload_conn_out_params *out);

	/**
	* ipa_uc_offload_disconn_pipes() - Client should call this
	* function to disconnect uC pipe to disable offload data path
	* @clnt_hdl: [in] opaque client handle assigned by IPA to client
	*
	* Note: Should not be called from atomic context
	*
	* Returns: 0 on success, negative on failure
	*/
	int ipa_uc_offload_disconn_pipes(u32 clnt_hdl);

	/**
	* ipa_set_perf_profile() - Client should call this function to
	* set IPA clock Band Width based on data rates
	* @profile: [in] BandWidth profile to use
	*
	* Returns: 0 on success, negative on failure
	*/
	int ipa_set_perf_profile(struct ipa_perf_profile *profile);


	/*
	* To register uC ready callback if uC not ready
	* and also check uC readiness
	* if uC not ready only, register callback
	*/
	int ipa_uc_offload_reg_rdyCB(struct ipa_uc_ready_params *param);

	/*
	* To de-register uC ready callback
	*/
	void ipa_uc_offload_dereg_rdyCB(enum ipa_uc_offload_proto proto);

	#else /* (CONFIG_IPA \|\| CONFIG_IPA3) */

	static inline int ipa_uc_offload_reg_intf(
	struct ipa_uc_offload_intf_params *in,
	struct ipa_uc_offload_out_params *out)
	{
	return -EPERM;
	}

	static inline int ipa_uC_offload_cleanup(u32 clnt_hdl)
	{
	return -EPERM;
	}

	static inline int ipa_uc_offload_conn_pipes(
	struct ipa_uc_offload_conn_in_params *in,
	struct ipa_uc_offload_conn_out_params *out)
	{
	return -EPERM;
	}

	static inline int ipa_uc_offload_disconn_pipes(u32 clnt_hdl)
	{
	return -EPERM;
	}

	static inline int ipa_set_perf_profile(struct ipa_perf_profile *profile)
	{
	return -EPERM;
	}

	static inline int ipa_uc_offload_reg_rdyCB(struct ipa_uc_ready_params *param)
	{
	return -EPERM;
	}

	static void ipa_uc_offload_dereg_rdyCB(enum ipa_uc_offload_proto proto)
	{
	}

	#endif /* CONFIG_IPA3 */

	#endif /* _IPA_UC_OFFLOAD_H_ */