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qcacld-3.0: Split wlan.ko into wlan_resident.ko and wlan.ko

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Module is saved in specified memory location when loading. In some
third platform, after rmmod/insmod wlan.ko for a while, wlan.ko may
fail to load due to memory fragmentation.

Split wlan.ko into wlan_resident.ko and wlan.ko. Keep wlan_resident.ko
in kernel all the while and trigger insmod/rmmod only on wlan.ko.

wlan_resident.ko contains all the module realization while wlan.ko
only contains module init/exit.

Change-Id: Iaeb6d810293cc000de8d6ec1df5cd985cef0c317
CRs-Fixed: 2727941
This commit is contained in:
bings 2020-07-30 12:16:37 +08:00 • committed by snandini
commit 1939a20df7
4 changed files with 128 additions and 21 deletions
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7
Kbuild
View file

@ -2543,6 +2543,7 @@ cppflags-$(CONFIG_CM_ROAM_OFFLOAD) += -DROAM_OFFLOAD_V1
cppflags-$(CONFIG_PLD_IPCI_ICNSS_FLAG) += -DCONFIG_PLD_IPCI_ICNSS
cppflags-$(CONFIG_PLD_SDIO_CNSS_FLAG) += -DCONFIG_PLD_SDIO_CNSS
cppflags-$(CONFIG_WLAN_RESIDENT_DRIVER) += -DFEATURE_WLAN_RESIDENT_DRIVER
ifeq ($(CONFIG_IPCIE_FW_SIM), y)
cppflags-y += -DCONFIG_PLD_IPCIE_FW_SIM
@ -3638,7 +3639,13 @@ endif
# Module information used by KBuild framework
obj-$(CONFIG_QCA_CLD_WLAN) += $(MODNAME).o
ifeq ($(CONFIG_WLAN_RESIDENT_DRIVER), y)
$(MODNAME)-y := $(HDD_SRC_DIR)/wlan_hdd_main_module.o
obj-$(CONFIG_QCA_CLD_WLAN) += wlan_resident.o
wlan_resident-y := $(OBJS)
else
$(MODNAME)-y := $(OBJS)
endif
OBJS_DIRS := $(dir $(OBJS)) \
$(WLAN_COMMON_ROOT)/$(HIF_CE_DIR)/ \
$(QDF_OBJ_DIR)/ \

26
core/hdd/inc/wlan_hdd_main.h
View file

@ -4456,6 +4456,32 @@ static inline void hdd_sta_destroy_ctx_all(struct hdd_context *hdd_ctx)
}
#endif
#ifdef FEATURE_WLAN_RESIDENT_DRIVER
extern char *country_code;
extern int con_mode;
extern const struct kernel_param_ops con_mode_ops;
extern int con_mode_ftm;
extern const struct kernel_param_ops con_mode_ftm_ops;
#endif
/**
* hdd_driver_load() - Perform the driver-level load operation
*
* Note: this is used in both static and DLKM driver builds
*
* Return: Errno
*/
int hdd_driver_load(void);
/**
* hdd_driver_unload() - Performs the driver-level unload operation
*
* Note: this is used in both static and DLKM driver builds
*
* Return: None
*/
void hdd_driver_unload(void);
/**
* hdd_init_start_completion() - Init the completion variable to wait on ON/OFF
*

66
core/hdd/src/wlan_hdd_main.c
View file

@ -262,7 +262,10 @@ static struct kparam_string fwpath = {
.maxlen = BUF_LEN,
};
static char *country_code;
char *country_code;
#ifdef FEATURE_WLAN_RESIDENT_DRIVER
EXPORT_SYMBOL(country_code);
#endif
static int enable_11d = -1;
static int enable_dfs_chan_scan = -1;
static bool is_mode_change_psoc_idle_shutdown;
@ -1063,9 +1066,15 @@ struct notifier_block hdd_netdev_notifier = {
};
/* variable to hold the insmod parameters */
static int con_mode;
int con_mode;
#ifdef FEATURE_WLAN_RESIDENT_DRIVER
EXPORT_SYMBOL(con_mode);
#endif
static int con_mode_ftm;
int con_mode_ftm;
#ifdef FEATURE_WLAN_RESIDENT_DRIVER
EXPORT_SYMBOL(con_mode_ftm);
#endif
int con_mode_epping;
static int pcie_gen_speed;
@ -16038,14 +16047,7 @@ static int con_mode_handler(const char *kmessage, const struct kernel_param *kp)
return hdd_set_con_mode_cb(mode);
}
/**
* hdd_driver_load() - Perform the driver-level load operation
*
* Note: this is used in both static and DLKM driver builds
*
* Return: Errno
*/
static int hdd_driver_load(void)
int hdd_driver_load(void)
{
struct osif_driver_sync *driver_sync;
QDF_STATUS status;
@ -16152,14 +16154,11 @@ exit:
return errno;
}
/**
* hdd_driver_unload() - Performs the driver-level unload operation
*
* Note: this is used in both static and DLKM driver builds
*
* Return: None
*/
static void hdd_driver_unload(void)
#ifdef FEATURE_WLAN_RESIDENT_DRIVER
EXPORT_SYMBOL(hdd_driver_load);
#endif
void hdd_driver_unload(void)
{
struct osif_driver_sync *driver_sync;
struct hdd_context *hdd_ctx;
@ -16240,6 +16239,10 @@ static void hdd_driver_unload(void)
hdd_qdf_deinit();
}
#ifdef FEATURE_WLAN_RESIDENT_DRIVER
EXPORT_SYMBOL(hdd_driver_unload);
#endif
#ifndef MODULE
/**
* wlan_boot_cb() - Wlan boot callback
@ -16374,6 +16377,12 @@ static int wlan_deinit_sysfs(void)
*
* Return: 0 for success, errno on failure
*/
#ifdef FEATURE_WLAN_RESIDENT_DRIVER
static int hdd_module_init(void)
{
return 0;
}
#else
static int hdd_module_init(void)
{
if (hdd_driver_load())
@ -16381,6 +16390,7 @@ static int hdd_module_init(void)
return 0;
}
#endif
#else
static int __init hdd_module_init(void)
{
@ -16403,10 +16413,16 @@ static int __init hdd_module_init(void)
*
* Return: None
*/
#ifdef FEATURE_WLAN_RESIDENT_DRIVER
static void __exit hdd_module_exit(void)
{
}
#else
static void __exit hdd_module_exit(void)
{
hdd_driver_unload();
}
#endif
#else
static void __exit hdd_module_exit(void)
{
@ -17815,16 +17831,24 @@ MODULE_LICENSE("Dual BSD/GPL");
MODULE_AUTHOR("Qualcomm Atheros, Inc.");
MODULE_DESCRIPTION("WLAN HOST DEVICE DRIVER");
static const struct kernel_param_ops con_mode_ops = {
const struct kernel_param_ops con_mode_ops = {
.set = con_mode_handler,
.get = param_get_int,
};
static const struct kernel_param_ops con_mode_ftm_ops = {
#ifdef FEATURE_WLAN_RESIDENT_DRIVER
EXPORT_SYMBOL(con_mode_ops);
#endif
const struct kernel_param_ops con_mode_ftm_ops = {
.set = con_mode_handler_ftm,
.get = param_get_int,
};
#ifdef FEATURE_WLAN_RESIDENT_DRIVER
EXPORT_SYMBOL(con_mode_ftm_ops);
#endif
#ifdef WLAN_FEATURE_EPPING
static const struct kernel_param_ops con_mode_epping_ops = {
.set = con_mode_handler_epping,

50
core/hdd/src/wlan_hdd_main_module.c Normal file
View file

@ -0,0 +1,50 @@
/*
* Copyright (c) 2020, The Linux Foundation. All rights reserved.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/**
* wlan_driver_resident: wlan_hdd_main_module.c
*
* wlan_driver_resident: WLAN Host Device Driver module interface implementation
*
*/
#include <linux/module.h>
#include "qwlan_version.h"
#include "wlan_hdd_main.h"
static int __init hdd_module_init(void)
{
return hdd_driver_load();
}
static void __exit hdd_module_exit(void)
{
hdd_driver_unload();
}
module_init(hdd_module_init);
module_exit(hdd_module_exit);
MODULE_LICENSE("Dual BSD/GPL");
MODULE_DESCRIPTION("WLAN HOST DEVICE DRIVER");
module_param_cb(con_mode, &con_mode_ops, &con_mode,
S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
module_param_cb(con_mode_ftm, &con_mode_ftm_ops, &con_mode_ftm,
S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
module_param(country_code, charp, S_IRUSR | S_IRGRP | S_IROTH);