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Merge "msm: ipa: Support hardware accelerated DIAG over qdss"

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qctecmdr 2020-10-14 10:15:01 -07:00 • committed by Gerrit - the friendly Code Review server
commit 8a6b39ffdb
2 changed files with 102 additions and 0 deletions
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100
include/linux/ipa_qdss.h Normal file
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@ -0,0 +1,100 @@
/* 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_ */

2
include/uapi/linux/msm_ipa.h
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@ -425,6 +425,8 @@ 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 || \