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Commit 26fe8fee authored by Amir Levy's avatar Amir Levy Committed by Gerrit - the friendly Code Review server
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msm: ipa: create ipa framework 



IPA driver is moving to teckpack.
create a thin kernel framework for IPA driver that will
allow dependent drivers to dispatch IPA APIs from teckpack.
Disable IPA and GSI kernel drivers compilation. This change
comes in parallel to IPA and GSI drivers enablement in teckpack.

Change-Id: I35f2918b935423637e21d6f871a113dc0224f878
Signed-off-by: default avatarAmir Levy <alevy@codeaurora.org>
parent b7a4d9d4

arch/arm64/configs/vendor/lahaina_GKI.config

+0 −5
Original line number Diff line number Diff line
@@ -105,14 +105,9 @@ CONFIG_MSM_BT_POWER=m 
CONFIG_ARM_SMMU=m

CONFIG_MSM_CLK_AOP_QMP=m

CONFIG_MSM_SPSS_UTILS=m

CONFIG_GSI=m

CONFIG_GSI_REGISTER_VERSION_2=y

CONFIG_QCOM_MINIDUMP=m

CONFIG_IPA3=m

CONFIG_IPA_USB=m

CONFIG_IPA_WDI_UNIFIED_API=y

CONFIG_RMNET_IPA3=y

CONFIG_RNDIS_IPA=m

CONFIG_CNSS2=m

CONFIG_CNSS2_QMI=y

CONFIG_CNSS_ASYNC=y

drivers/platform/msm/Kconfig

+2 −145
Original line number Diff line number Diff line
@@ -42,31 +42,11 @@ config SPS_SUPPORT_NDP_BAM 
	  to do the actual data transfer themselves, instead of the

	  BAM.



config GSI

	tristate "GSI support"

	help

	  This driver provides the transport needed to talk to the

	  IPA core. It replaces the BAM transport used previously.



	  The GSI connects to a peripheral component via uniform TLV

	  interface, and allows it to interface with other peripherals

	  and CPUs over various types of interfaces such as MHI, xDCI,

	  xHCI, GPI, WDI, Ethernet, etc.



config GSI_REGISTER_VERSION_2

	bool "GSI core Version 2 Registers SWI Support"

	depends on GSI

	help

	  GSI core registers Software interface version 2 has updated

	  registers interface to communicate with GSI. This includes

	  new registers offsets, new registers fields structure and

	  new registers.



config IPA3

	tristate "IPA3 support"

	depends on NET && GSI

	depends on NET

	help

	  This driver supports the Internet Packet Accelerator (IPA3) core.

	  This framework supports the Internet Packet Accelerator (IPA3) core.

	  IPA is a programmable protocol processor HW block.

	  It is designed to support generic HW processing of UL/DL IP packets

	  for various use cases independent of radio technology.
@@ -75,24 +55,6 @@ config IPA3 
	  Kernel and user-space processes can call the IPA driver

	  to configure IPA core.



config IPA_USB

	tristate "IPA USB offload support"

	depends on IPA3 && ARCH_QCOM

	help

	  This driver supports control of USB data traffic offload via IPA.

	  Using xDCI GSI protocol, IPA USB enables USB to configure IPA to

	  offload traffic with different USB functions. The supported functions

	  are RNDIS, ECM, MBIM, RMNET as well as DPL (data packet logging).



config IPA_DEBUG

	bool "IPA DEBUG for non-perf build"

	depends on IPA3

	help

	  This driver support more debug info for non-perf build.

	  If you use the non-perf build and want to have more debug

	  info enabled, then this flag can be enabled.

	  It is not suggested to enable this flag for perf build.



config IPA_WDI_UNIFIED_API

	bool "IPA WDI unified API support"

	depends on IPA3
@@ -103,73 +65,6 @@ config IPA_WDI_UNIFIED_API 
	  The IPA WDI unified API supports all WDI versions through a unified

	  interface.



config RMNET_IPA3

	bool "IPA3 RMNET WWAN Network Device"

	depends on IPA3 && ARCH_QCOM

	select QCOM_QMI_HELPERS

	help

	  This WWAN Network Driver implements network stack class device.

	  It supports Embedded data transfer from A7 to Q6. Configures IPA HW

	  for RmNet Data Driver and also exchange of QMI messages between

	  A7 and Q6 IPA-driver.



config ECM_IPA

	tristate "STD ECM LAN Driver support"

	depends on IPA_USB

	help

	  Enables LAN between applications processor and a tethered

	  host using the STD ECM protocol.

	  This Network interface is aimed to allow data path go through

	  IPA core while using STD ECM protocol.



config RNDIS_IPA

	tristate "RNDIS_IPA Network Interface Driver support"

	depends on IPA_USB

	help

	  Enables LAN between applications processor and a tethered

	  host using the RNDIS protocol.

	  This Network interface is aimed to allow data path go through

	  IPA core while using RNDIS protocol.



config IPA3_MHI_PROXY

	bool "IPA3 MHI proxy driver"

	depends on RMNET_IPA3

	help

	  This driver is used as a proxy between modem and MHI host driver.

	  Its main functionality is to setup MHI Satellite channels on behalf of

	  modem and provide the ability of modem to MHI device communication.

	  Once the configuration is done modem will communicate directly with

	  the MHI device without AP involvement, with the exception of

	  power management.



config IPA3_MHI_PRIME_MANAGER

	tristate "IPA3_MHI Prime Manager driver"

	depends on RMNET_IPA3

	help

	  This driver functionality is to setup MHI Prime channels between Host and

	  modem and enable the ability for MHI Prime communication.

	  Once the configuration is done modem will communicate directly with

	  the Host without AP involvement for tethering data offload.



config IPA_UT

	bool "IPA Unit-Test Framework and Test Suites"

	depends on IPA3 && DEBUG_FS

	help

	  This Module implements IPA in-kernel test framework.

	  The framework supports defining and running tests, grouped

	  into suites according to the sub-unit of the IPA being tested.

	  The user interface to run and control the tests is debugfs file

	  system.



config IPA_EMULATION

	bool "IPA on X86 Linux (IPA emulation support)"

	depends on X86 && IPA3

	help

	  This options is used only when building the X86 version of

	  the IPA/GSI driver. On this mode, IPA driver will be probed

	  as PCIE device (and not platform device) where IPA emulation

	  shall be connected via PCIE to X86 machine.



config USB_BAM

	tristate "USB BAM Driver"

	depends on SPS && USB_GADGET
@@ -187,44 +82,6 @@ config MSM_GENI_SE 
	  module is used to configure and read the configuration from the

	  Serial Engines.



config IPA3_REGDUMP

	bool "Dump or collect IPA/GSI register values on Linux crash"

	depends on IPA3

	help

	  This option is to be used when the saving of IPA register state is

	  desired upon a fatal system exception. When an exception occurs,

	  an IPA register collection algorithm will be run in the context of

	  the exception handler.  A predefined set of registers will be read

	  and their values will be placed into a static hierarchical data

	  structure that can be perused post crash.



choice

	prompt "Platform whose registers are to be dumped/collected"

	depends on IPA3_REGDUMP

	help

	  The choices within represent the possible platforms this build is

	  intended for. The choices are mutually exclusive.  By selecting

	  one, you effect the inclusion path used, such that the relevant

	  register definitions will be found.  Each platform has unique

	  register definitions.



config IPA3_REGDUMP_IPA_4_5

	bool "The 4.5 IPA"

	depends on IPA3_REGDUMP

	depends on ARCH_KONA

	help

	  Set this to enable the 4.5 IPA's registers to be dumped/collected.



endchoice



config IPA3_REGDUMP_NUM_EXTRA_ENDP_REGS

	int "The number of extra endp registers for remaining pipes"

	depends on IPA3_REGDUMP

	default 0

	help

	  If the platform has extra endpoint registers for remaining

	  pipes, please express how many here.



config QPNP_REVID

	tristate "QPNP Revision ID Peripheral"

	depends on SPMI

drivers/platform/msm/Makefile

+1 −2
Original line number Diff line number Diff line
@@ -5,8 +5,7 @@ 
#



obj-$(CONFIG_MSM_EXT_DISPLAY) += msm_ext_display.o

obj-$(CONFIG_GSI) += gsi/

obj-$(CONFIG_IPA3) += ipa/

obj-$(CONFIG_IPA3) += ipa_fmwk/

obj-$(CONFIG_MSM_GENI_SE) += msm-geni-se.o

obj-$(CONFIG_USB_BAM) += usb_bam.o

obj-$(CONFIG_QPNP_REVID) += qpnp-revid.o

drivers/platform/msm/ipa_fmwk/Makefile

0 → 100644
+5 −0
Original line number Diff line number Diff line 
# SPDX-License-Identifier: GPL-2.0-only



ipa_fwmk-y += ipa_fmwk.o



obj-$(CONFIG_IPA3) += ipa_fmwk.o

drivers/platform/msm/ipa_fmwk/ipa_fmwk.c

0 → 100644
+322 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (c) 2015-2020, The Linux Foundation. All rights reserved.

 */



#include <linux/ipa.h>

#include <linux/ipa_uc_offload.h>

#include <linux/ipa_mhi.h>

#include <linux/ipa_wigig.h>

#include <linux/ipa_wdi3.h>

#include <linux/ipa_usb.h>

#include <linux/ipa_odu_bridge.h>

#include <linux/ipa_fmwk.h>



#include <linux/init.h>

#include <linux/kernel.h>

#include <linux/mm.h>

#include <linux/module.h>

#include <linux/list.h>



#define IPA_FMWK_DISPATCH_RETURN(api, p...) \

	do { \

		if (!ipa_fmwk_ctx) { \

			pr_err("%s:%d IPA framework was not inited\n", \

				__func__, __LINE__); \

			ret = -EPERM; \

		} \

		else { \

			if (ipa_fmwk_ctx->api) { \

				ret = ipa_fmwk_ctx->api(p); \

			} else { \

				WARN(1, \

					"%s was not registered on ipa_fmwk\n", \

						__func__); \

				ret = -EPERM; \

			} \

		} \

	} while (0)



/**

 * struct ipa_ready_cb_info - A list of all the registrations

 *  for an indication of IPA driver readiness

 *

 * @link: linked list link

 * @ready_cb: callback

 * @user_data: User data

 *

 */

struct ipa_ready_cb_info {

	struct list_head link;

	ipa_ready_cb ready_cb;

	void *user_data;

};



struct ipa_fmwk_contex {

	bool ipa_ready;

	struct list_head ipa_ready_cb_list;

	struct mutex lock;



	/* ipa core driver APIs */

	int (*ipa_tx_dp)(enum ipa_client_type dst, struct sk_buff *skb,

		struct ipa_tx_meta *metadata);



	/* ipa_usb APIs */

	int (*ipa_usb_init_teth_prot)(enum ipa_usb_teth_prot teth_prot,

		struct ipa_usb_teth_params *teth_params,

		int (*ipa_usb_notify_cb)(enum ipa_usb_notify_event,

			void *),

		void *user_data);



	int (*ipa_usb_xdci_connect)(

		struct ipa_usb_xdci_chan_params *ul_chan_params,

		struct ipa_usb_xdci_chan_params *dl_chan_params,

		struct ipa_req_chan_out_params *ul_out_params,

		struct ipa_req_chan_out_params *dl_out_params,

		struct ipa_usb_xdci_connect_params *connect_params);



	int (*ipa_usb_xdci_disconnect)(u32 ul_clnt_hdl, u32 dl_clnt_hdl,

		enum ipa_usb_teth_prot teth_prot);



	int (*ipa_usb_deinit_teth_prot)(enum ipa_usb_teth_prot teth_prot);



	int (*ipa_usb_xdci_suspend)(u32 ul_clnt_hdl, u32 dl_clnt_hdl,

		enum ipa_usb_teth_prot teth_prot,

		bool with_remote_wakeup);



	int (*ipa_usb_xdci_resume)(u32 ul_clnt_hdl, u32 dl_clnt_hdl,

		enum ipa_usb_teth_prot teth_prot);

};



static struct ipa_fmwk_contex *ipa_fmwk_ctx;



static inline void ipa_trigger_ipa_ready_cbs(void)

{

	struct ipa_ready_cb_info *info;

	struct ipa_ready_cb_info *next;



	/* Call all the CBs */

	list_for_each_entry_safe(info, next,

		&ipa_fmwk_ctx->ipa_ready_cb_list, link) {

		if (info->ready_cb)

			info->ready_cb(info->user_data);



		list_del(&info->link);

		kfree(info);

	}

}



/* registration API for IPA core module */

int ipa_fmwk_register_ipa(const struct ipa_core_data *in)

{

	if (!ipa_fmwk_ctx) {

		pr_err("ipa framework hasn't been initialized yet\n");

		return -EPERM;

	}



	mutex_lock(&ipa_fmwk_ctx->lock);

	if (ipa_fmwk_ctx->ipa_ready) {

		pr_err("ipa core driver API were already registered\n");

		mutex_unlock(&ipa_fmwk_ctx->lock);

		return -EPERM;

	}



	ipa_fmwk_ctx->ipa_tx_dp = in->ipa_tx_dp;



	ipa_fmwk_ctx->ipa_ready = true;

	ipa_trigger_ipa_ready_cbs();

	mutex_unlock(&ipa_fmwk_ctx->lock);



	pr_info("IPA driver is now in ready state\n");

	return 0;

}

EXPORT_SYMBOL(ipa_fmwk_register_ipa);



int ipa_register_ipa_ready_cb(void(*ipa_ready_cb)(void *user_data),

	void *user_data)

{

	struct ipa_ready_cb_info *cb_info = NULL;



	if (!ipa_fmwk_ctx) {

		pr_err("ipa framework hasn't been initialized yet\n");

		return -EPERM;

	}



	mutex_lock(&ipa_fmwk_ctx->lock);

	if (ipa_fmwk_ctx->ipa_ready) {

		pr_debug("IPA driver finished initialization already\n");

		mutex_unlock(&ipa_fmwk_ctx->lock);

		return -EEXIST;

	}



	cb_info = kmalloc(sizeof(struct ipa_ready_cb_info), GFP_KERNEL);

	if (!cb_info) {

		mutex_unlock(&ipa_fmwk_ctx->lock);

		return -ENOMEM;

	}



	cb_info->ready_cb = ipa_ready_cb;

	cb_info->user_data = user_data;



	list_add_tail(&cb_info->link, &ipa_fmwk_ctx->ipa_ready_cb_list);

	mutex_unlock(&ipa_fmwk_ctx->lock);



	return 0;

}

EXPORT_SYMBOL(ipa_register_ipa_ready_cb);



/* ipa core driver API wrappers*/



int ipa_tx_dp(enum ipa_client_type dst, struct sk_buff *skb,

	struct ipa_tx_meta *metadata)

{

	int ret;



	IPA_FMWK_DISPATCH_RETURN(ipa_tx_dp,

		dst, skb, metadata);



	return ret;

}

EXPORT_SYMBOL(ipa_tx_dp);



/* registration API for IPA usb module */

int ipa_fmwk_register_ipa_usb(const struct ipa_usb_data *in)

{

	if (!ipa_fmwk_ctx) {

		pr_err("ipa framework hasn't been initialized yet\n");

		return -EPERM;

	}



	if (ipa_fmwk_ctx->ipa_usb_init_teth_prot ||

		ipa_fmwk_ctx->ipa_usb_xdci_connect ||

		ipa_fmwk_ctx->ipa_usb_xdci_disconnect ||

		ipa_fmwk_ctx->ipa_usb_deinit_teth_prot ||

		ipa_fmwk_ctx->ipa_usb_xdci_suspend ||

		ipa_fmwk_ctx->ipa_usb_xdci_resume) {

		pr_err("ipa_usb APIs were already initialized\n");

		return -EPERM;

	}

	ipa_fmwk_ctx->ipa_usb_init_teth_prot = in->ipa_usb_init_teth_prot;

	ipa_fmwk_ctx->ipa_usb_xdci_connect = in->ipa_usb_xdci_connect;

	ipa_fmwk_ctx->ipa_usb_xdci_disconnect = in->ipa_usb_xdci_disconnect;

	ipa_fmwk_ctx->ipa_usb_deinit_teth_prot = in->ipa_usb_deinit_teth_prot;

	ipa_fmwk_ctx->ipa_usb_xdci_suspend = in->ipa_usb_xdci_suspend;

	ipa_fmwk_ctx->ipa_usb_xdci_resume = in->ipa_usb_xdci_resume;



	return 0;

}

EXPORT_SYMBOL(ipa_fmwk_register_ipa_usb);



/* ipa_usb API wrappers*/

int ipa_usb_init_teth_prot(enum ipa_usb_teth_prot teth_prot,

	struct ipa_usb_teth_params *teth_params,

	int (*ipa_usb_notify_cb)(enum ipa_usb_notify_event,

		void *),

	void *user_data)

{

	int ret;



	IPA_FMWK_DISPATCH_RETURN(ipa_usb_init_teth_prot,

		teth_prot, teth_params, ipa_usb_notify_cb, user_data);



	return ret;

}

EXPORT_SYMBOL(ipa_usb_init_teth_prot);



int ipa_usb_xdci_connect(struct ipa_usb_xdci_chan_params *ul_chan_params,

	struct ipa_usb_xdci_chan_params *dl_chan_params,

	struct ipa_req_chan_out_params *ul_out_params,

	struct ipa_req_chan_out_params *dl_out_params,

	struct ipa_usb_xdci_connect_params *connect_params)

{

	int ret;



	IPA_FMWK_DISPATCH_RETURN(ipa_usb_xdci_connect,

		ul_chan_params, dl_chan_params, ul_out_params,

		dl_out_params, connect_params);



	return ret;

}

EXPORT_SYMBOL(ipa_usb_xdci_connect);



int ipa_usb_xdci_disconnect(u32 ul_clnt_hdl, u32 dl_clnt_hdl,

	enum ipa_usb_teth_prot teth_prot)

{

	int ret;



	IPA_FMWK_DISPATCH_RETURN(ipa_usb_xdci_disconnect,

		ul_clnt_hdl, dl_clnt_hdl, teth_prot);



	return ret;

}

EXPORT_SYMBOL(ipa_usb_xdci_disconnect);



int ipa_usb_deinit_teth_prot(enum ipa_usb_teth_prot teth_prot)

{

	int ret;



	IPA_FMWK_DISPATCH_RETURN(ipa_usb_deinit_teth_prot,

		teth_prot);



	return ret;

}

EXPORT_SYMBOL(ipa_usb_deinit_teth_prot);



int ipa_usb_xdci_suspend(u32 ul_clnt_hdl, u32 dl_clnt_hdl,

	enum ipa_usb_teth_prot teth_prot,

	bool with_remote_wakeup)

{

	int ret;



	IPA_FMWK_DISPATCH_RETURN(ipa_usb_xdci_suspend,

		ul_clnt_hdl, dl_clnt_hdl, teth_prot, with_remote_wakeup);



	return ret;

}

EXPORT_SYMBOL(ipa_usb_xdci_suspend);



int ipa_usb_xdci_resume(u32 ul_clnt_hdl, u32 dl_clnt_hdl,

	enum ipa_usb_teth_prot teth_prot)

{

	int ret;



	IPA_FMWK_DISPATCH_RETURN(ipa_usb_xdci_resume,

		ul_clnt_hdl, dl_clnt_hdl, teth_prot);



	return ret;

}

EXPORT_SYMBOL(ipa_usb_xdci_resume);



static int __init ipa_fmwk_init(void)

{

	pr_info("IPA framework init\n");



	ipa_fmwk_ctx = kzalloc(sizeof(struct ipa_fmwk_contex), GFP_KERNEL);

	if (ipa_fmwk_ctx == NULL)

		return -ENOMEM;



	INIT_LIST_HEAD(&ipa_fmwk_ctx->ipa_ready_cb_list);

	mutex_init(&ipa_fmwk_ctx->lock);



	return 0;

}

subsys_initcall(ipa_fmwk_init);



static void __exit ipa_fmwk_exit(void)

{

	struct ipa_ready_cb_info *info;

	struct ipa_ready_cb_info *next;



	pr_debug("IPA framework exit\n");

	list_for_each_entry_safe(info, next,

		&ipa_fmwk_ctx->ipa_ready_cb_list, link) {

		list_del(&info->link);

		kfree(info);

	}

	kfree(ipa_fmwk_ctx);

	ipa_fmwk_ctx = NULL;

}

module_exit(ipa_fmwk_exit);



MODULE_LICENSE("GPL v2");

MODULE_DESCRIPTION("IPA HW framework");