msm: ipa: Support hardware accelerated DIAG over qdss (6b989191) · Commits · e / devices / android_kernel_fairphone_FP5

include/linux/ipa_qdss.h

0 → 100644

+100 −0

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		/* SPDX-License-Identifier: GPL-2.0-only */
		/*
		* Copyright (c) 2020, The Linux Foundation. All rights reserved.
		*/

		#ifndef _IPA_QDSS_H_
		#define _IPA_QDSS_H_

		#include <linux/ipa.h>

		/**
		* enum ipa_qdss_notify - these are the only return items
		* @IPA_QDSS_SUCCESS: will be returned as it is for both conn
		* and disconn
		* @IPA_QDSS_PIPE_CONN_FAILURE: will be returned as negative value
		* @IPA_QDSS_PIPE_DISCONN_FAILURE: will be returned as negative value
		*/
		enum ipa_qdss_notify {
		IPA_QDSS_SUCCESS,
		IPA_QDSS_PIPE_CONN_FAILURE,
		IPA_QDSS_PIPE_DISCONN_FAILURE,
		};

		/**
		* struct ipa_qdss_conn_in_params - QDSS -> IPA TX configuration
		* @data_fifo_base_addr: Base address of the data FIFO used by BAM
		* @data_fifo_size: Size of the data FIFO
		* @desc_fifo_base_addr: Base address of the descriptor FIFO by BAM
		* @desc_fifo_size: Should be configured to 1 by QDSS
		* @bam_p_evt_dest_addr: equivalent to event_ring_doorbell_pa
		* physical address of the doorbell that IPA uC
		* will update the headpointer of the event ring.
		* QDSS should send BAM_P_EVNT_REG address in this var
		* Configured with the GSI Doorbell Address.
		* GSI sends Update RP by doing a write to this address
		* @bam_p_evt_threshold: Threshold level of how many bytes consumed
		* @override_eot: if override EOT==1, it doesn't check the EOT bit in
		* the descriptor
		*/
		struct ipa_qdss_conn_in_params {
		phys_addr_t data_fifo_base_addr;
		u32 data_fifo_size;
		phys_addr_t desc_fifo_base_addr;
		u32 desc_fifo_size;
		phys_addr_t bam_p_evt_dest_addr;
		u32 bam_p_evt_threshold;
		u32 override_eot;
		};

		/**
		* struct ipa_qdss_conn_out_params - information provided
		* to QDSS driver
		* @rx_db_pa: physical address of IPA doorbell for RX (QDSS->IPA transactions)
		* QDSS to take this address and assign it to BAM_P_EVENT_DEST_ADDR
		*/
		struct ipa_qdss_conn_out_params {
		phys_addr_t ipa_rx_db_pa;
		};

		#if defined CONFIG_IPA3

		/**
		* ipa_qdss_conn_pipes - Client should call this
		* function to connect QDSS -> IPA pipe
		*
		* @in: [in] input parameters from client
		* @out: [out] output params to client
		*
		* Note: Should not be called from atomic context
		*
		* @Return 0 on success, negative on failure
		*/
		int ipa_qdss_conn_pipes(struct ipa_qdss_conn_in_params *in,
		struct ipa_qdss_conn_out_params *out);

		/**
		* ipa_qdss_disconn_pipes() - Client should call this
		* function to disconnect pipes
		*
		* Note: Should not be called from atomic context
		*
		* Returns: 0 on success, negative on failure
		*/
		int ipa_qdss_disconn_pipes(void);

		#else /* CONFIG_IPA3 */

		static inline int ipa_qdss_conn_pipes(struct ipa_qdss_conn_in_params *in,
		struct ipa_qdss_conn_out_params *out)
		{
		return -IPA_QDSS_PIPE_CONN_FAILURE;
		}

		static inline int ipa_qdss_disconn_pipes(void)
		{
		return -IPA_QDSS_PIPE_DISCONN_FAILURE;
		}

		#endif /* CONFIG_IPA3 */
		#endif /* _IPA_QDSS_H_ */

include/uapi/linux/msm_ipa.h

+2 −0

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		@@ -419,6 +419,8 @@ enum ipa_client_type {
		#define IPA_CLIENT_MHI_PRIME_DPL_PROD IPA_CLIENT_MHI_PRIME_DPL_PROD
		#define IPA_CLIENT_AQC_ETHERNET_PROD IPA_CLIENT_AQC_ETHERNET_PROD
		#define IPA_CLIENT_AQC_ETHERNET_CONS IPA_CLIENT_AQC_ETHERNET_CONS
		#define IPA_CLIENT_MHI_QDSS_CONS IPA_CLIENT_MHI_QDSS_CONS
		#define IPA_CLIENT_QDSS_PROD IPA_CLIENT_QDSS_PROD

		#define IPA_CLIENT_IS_APPS_CONS(client) \
		((client) == IPA_CLIENT_APPS_LAN_CONS \|\| \