tobi/M7350
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
46ba6f09ec
M7350/kernel/drivers/net/wireless/cnss/cnss_pci.c

3123 lines
74 KiB
C
Raw Normal View History

M7350v5_en_gpl
2024-09-09 08:57:42 +00:00
/* Copyright (c) 2013-2016, 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.
*/
#include <asm/dma-iommu.h>
#include <linux/iommu.h>
#include <linux/export.h>
#include <linux/err.h>
#include <linux/of.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/regulator/consumer.h>
#include <linux/gpio.h>
#include <linux/of_gpio.h>
#include <linux/pm.h>
#include <linux/pm_wakeup.h>
#include <linux/sched.h>
#include <linux/pm_qos.h>
#include <linux/pm_runtime.h>
#include <linux/esoc_client.h>
#include <linux/pinctrl/consumer.h>
#include <linux/firmware.h>
#include <linux/dma-mapping.h>
#include <linux/msm-bus.h>
#include <linux/msm-bus-board.h>
#include <linux/spinlock.h>
#include <linux/suspend.h>
#include <linux/rwsem.h>
#include <linux/crypto.h>
#include <linux/scatterlist.h>
#include <linux/log2.h>
#ifdef CONFIG_PCI_MSM
#include <linux/msm_pcie.h>
#else
#include <mach/msm_pcie.h>
#endif
#include <soc/qcom/subsystem_restart.h>
#include <soc/qcom/subsystem_notif.h>
#include <soc/qcom/ramdump.h>
#include <net/cfg80211.h>
#include <soc/qcom/memory_dump.h>
#include <net/cnss.h>
#ifdef CONFIG_WCNSS_MEM_PRE_ALLOC
#include <net/cnss_prealloc.h>
#endif
#define subsys_to_drv(d) container_of(d, struct cnss_data, subsys_desc)
#define VREG_ON 1
#define VREG_OFF 0
#define WLAN_EN_HIGH 1
#define WLAN_EN_LOW 0
#define PCIE_LINK_UP 1
#define PCIE_LINK_DOWN 0
#define WLAN_BOOTSTRAP_HIGH 1
#define WLAN_BOOTSTRAP_LOW 0
#define CNSS_DUMP_FORMAT_VER 0x11
#define CNSS_DUMP_MAGIC_VER_V2 0x42445953
#define CNSS_DUMP_NAME "CNSS_WLAN"
#define QCA6174_VENDOR_ID (0x168C)
#define QCA6174_DEVICE_ID (0x003E)
#define BEELINER_DEVICE_ID (0x0040)
#define QCA6174_REV_ID_OFFSET (0x08)
#define QCA6174_FW_1_1 (0x11)
#define QCA6174_FW_1_3 (0x13)
#define QCA6174_FW_2_0 (0x20)
#define QCA6174_FW_3_0 (0x30)
#define QCA6174_FW_3_2 (0x32)
#define BEELINER_FW (0x00)
#define AR6320_REV1_VERSION 0x5000000
#define AR6320_REV1_1_VERSION 0x5000001
#define AR6320_REV1_3_VERSION 0x5000003
#define AR6320_REV2_1_VERSION 0x5010000
#define AR6320_REV3_VERSION 0x5020000
#define AR6320_REV3_2_VERSION 0x5030000
#define AR900B_DEV_VERSION 0x1000000
static struct cnss_fw_files FW_FILES_QCA6174_FW_1_1 = {
"qwlan11.bin", "bdwlan11.bin", "otp11.bin", "utf11.bin",
"utfbd11.bin", "epping11.bin", "evicted11.bin"};
static struct cnss_fw_files FW_FILES_QCA6174_FW_2_0 = {
"qwlan20.bin", "bdwlan20.bin", "otp20.bin", "utf20.bin",
"utfbd20.bin", "epping20.bin", "evicted20.bin"};
static struct cnss_fw_files FW_FILES_QCA6174_FW_1_3 = {
"qwlan13.bin", "bdwlan13.bin", "otp13.bin", "utf13.bin",
"utfbd13.bin", "epping13.bin", "evicted13.bin"};
static struct cnss_fw_files FW_FILES_QCA6174_FW_3_0 = {
"qwlan30.bin", "bdwlan30.bin", "otp30.bin", "utf30.bin",
"utfbd30.bin", "epping30.bin", "evicted30.bin"};
static struct cnss_fw_files FW_FILES_DEFAULT = {
"qwlan.bin", "bdwlan.bin", "otp.bin", "utf.bin",
"utfbd.bin", "epping.bin", "evicted.bin"};
#define QCA6180_VENDOR_ID (0x168C)
#define QCA6180_DEVICE_ID (0x0041)
#define QCA6180_REV_ID_OFFSET (0x08)
#define WLAN_VREG_NAME "vdd-wlan"
#define WLAN_VREG_IO_NAME "vdd-wlan-io"
#define WLAN_VREG_XTAL_NAME "vdd-wlan-xtal"
#define WLAN_VREG_CORE_NAME "vdd-wlan-core"
#define WLAN_VREG_SP2T_NAME "vdd-wlan-sp2t"
#define WLAN_SWREG_NAME "wlan-soc-swreg"
#define WLAN_ANT_SWITCH_NAME "wlan-ant-switch"
#define WLAN_EN_GPIO_NAME "wlan-en-gpio"
#define WLAN_BOOTSTRAP_GPIO_NAME "wlan-bootstrap-gpio"
#define PM_OPTIONS 0
#define PM_OPTIONS_SUSPEND_LINK_DOWN \
(MSM_PCIE_CONFIG_NO_CFG_RESTORE | MSM_PCIE_CONFIG_LINKDOWN)
#define PM_OPTIONS_RESUME_LINK_DOWN \
(MSM_PCIE_CONFIG_NO_CFG_RESTORE)
#define SOC_SWREG_VOLT_MAX 1200000
#define SOC_SWREG_VOLT_MIN 1200000
#define WLAN_ANT_SWITCH_VOLT_MAX 2700000
#define WLAN_ANT_SWITCH_VOLT_MIN 2700000
#define WLAN_ANT_SWITCH_CURR 20000
#define WLAN_VREG_IO_MAX 1800000
#define WLAN_VREG_IO_MIN 1800000
#define WLAN_VREG_XTAL_MAX 1800000
#define WLAN_VREG_XTAL_MIN 1800000
#define WLAN_VREG_CORE_MAX 1300000
#define WLAN_VREG_CORE_MIN 1300000
#define WLAN_VREG_SP2T_MAX 2700000
#define WLAN_VREG_SP2T_MIN 2700000
#define POWER_ON_DELAY 2
#define WLAN_ENABLE_DELAY 10
#define WLAN_RECOVERY_DELAY 1
#define PCIE_ENABLE_DELAY 100
#define WLAN_BOOTSTRAP_DELAY 10
#define EVICT_BIN_MAX_SIZE (512*1024)
#define CNSS_PINCTRL_STATE_ACTIVE "default"
static DEFINE_SPINLOCK(pci_link_down_lock);
#define FW_NAME_FIXED_LEN (6)
#define MAX_NUM_OF_SEGMENTS (16)
#define MAX_INDEX_FILE_SIZE (512)
#define FW_FILENAME_LENGTH (13)
#define TYPE_LENGTH (4)
#define PER_FILE_DATA (21)
#define MAX_IMAGE_SIZE (2*1024*1024)
#define FW_IMAGE_FTM (0x01)
#define FW_IMAGE_MISSION (0x02)
#define FW_IMAGE_BDATA (0x03)
#define FW_IMAGE_PRINT (0x04)
#define SEG_METADATA (0x01)
#define SEG_NON_PAGED (0x02)
#define SEG_LOCKED_PAGE (0x03)
#define SEG_UNLOCKED_PAGE (0x04)
#define SEG_NON_SECURE_DATA (0x05)
#define BMI_TEST_SETUP (0x09)
struct cnss_wlan_gpio_info {
char *name;
u32 num;
bool state;
bool init;
bool prop;
struct pinctrl *pinctrl;
struct pinctrl_state *gpio_state_default;
};
struct cnss_wlan_vreg_info {
struct regulator *wlan_reg;
struct regulator *soc_swreg;
struct regulator *ant_switch;
struct regulator *wlan_reg_io;
struct regulator *wlan_reg_xtal;
struct regulator *wlan_reg_core;
struct regulator *wlan_reg_sp2t;
bool state;
};
struct segment_memory {
dma_addr_t dma_region;
void *cpu_region;
u32 size;
};
/* FW image descriptor lists */
struct image_desc_hdr {
u8 image_id;
u8 reserved[3];
u32 segments_cnt;
};
struct segment_desc {
u8 segment_id;
u8 segment_idx;
u8 flags[2];
u32 addr_count;
u32 addr_low;
u32 addr_high;
};
struct region_desc {
u32 addr_low;
u32 addr_high;
u32 size;
u32 reserved;
};
struct index_file {
u32 type;
u32 segment_idx;
u8 file_name[13];
};
/* device_info is expected to be fully populated after cnss_config is invoked.
* The function pointer callbacks are expected to be non null as well.
*/
static struct cnss_data {
struct platform_device *pldev;
struct subsys_device *subsys;
struct subsys_desc subsysdesc;
bool ramdump_dynamic;
struct ramdump_device *ramdump_dev;
unsigned long ramdump_size;
void *ramdump_addr;
phys_addr_t ramdump_phys;
struct msm_dump_data dump_data;
u16 unsafe_ch_count;
u16 unsafe_ch_list[CNSS_MAX_CH_NUM];
struct cnss_wlan_driver *driver;
struct pci_dev *pdev;
const struct pci_device_id *id;
struct dma_iommu_mapping *smmu_mapping;
dma_addr_t smmu_iova_start;
size_t smmu_iova_len;
struct cnss_wlan_vreg_info vreg_info;
struct cnss_wlan_gpio_info gpio_info;
bool pcie_link_state;
bool pcie_link_down_ind;
bool pci_register_again;
bool notify_modem_status;
struct pci_saved_state *saved_state;
u16 revision_id;
u16 dfs_nol_info_len;
bool recovery_in_progress;
bool fw_available;
struct codeswap_codeseg_info *cnss_seg_info;
/* Virtual Address of the DMA page */
void *codeseg_cpuaddr[CODESWAP_MAX_CODESEGS];
struct cnss_fw_files fw_files;
struct pm_qos_request qos_request;
void *modem_notify_handler;
int modem_current_status;
struct msm_bus_scale_pdata *bus_scale_table;
uint32_t bus_client;
int current_bandwidth_vote;
void *subsys_handle;
struct esoc_desc *esoc_desc;
struct cnss_platform_cap cap;
struct msm_pcie_register_event event_reg;
struct wakeup_source ws;
uint32_t recovery_count;
enum cnss_driver_status driver_status;
void *dfs_nol_info;
#ifdef CONFIG_CNSS_SECURE_FW
void *fw_mem;
#endif
u32 device_id;
int fw_image_setup;
uint32_t bmi_test;
void *fw_cpu;
dma_addr_t fw_dma;
u32 fw_dma_size;
u32 fw_seg_count;
struct segment_memory fw_seg_mem[MAX_NUM_OF_SEGMENTS];
void *bdata_cpu;
dma_addr_t bdata_dma;
u32 bdata_dma_size;
u32 bdata_seg_count;
struct segment_memory bdata_seg_mem[MAX_NUM_OF_SEGMENTS];
int wlan_bootstrap_gpio;
atomic_t auto_suspended;
bool monitor_wake_intr;
} *penv;
static unsigned int pcie_link_down_panic;
module_param(pcie_link_down_panic, uint, S_IRUSR | S_IWUSR);
MODULE_PARM_DESC(pcie_link_down_panic,
"Trigger kernel panic when PCIe link down is detected");
static int cnss_wlan_vreg_on(struct cnss_wlan_vreg_info *vreg_info)
{
int ret;
if (vreg_info->wlan_reg_core) {
ret = regulator_enable(vreg_info->wlan_reg_core);
if (ret) {
pr_err("%s: regulator enable failed for wlan_reg_core\n",
__func__);
goto error_enable_reg_core;
}
}
ret = regulator_enable(vreg_info->wlan_reg);
if (ret) {
pr_err("%s: regulator enable failed for WLAN power\n",
__func__);
goto error_enable;
}
if (vreg_info->wlan_reg_io) {
ret = regulator_enable(vreg_info->wlan_reg_io);
if (ret) {
pr_err("%s: regulator enable failed for wlan_reg_io\n",
__func__);
goto error_enable_reg_io;
}
}
if (vreg_info->wlan_reg_xtal) {
ret = regulator_enable(vreg_info->wlan_reg_xtal);
if (ret) {
pr_err("%s: regulator enable failed for wlan_reg_xtal\n",
__func__);
goto error_enable_reg_xtal;
}
}
if (vreg_info->wlan_reg_sp2t) {
ret = regulator_enable(vreg_info->wlan_reg_sp2t);
if (ret) {
pr_err("%s: regulator enable failed for wlan_reg_sp2t\n",
__func__);
goto error_enable_reg_sp2t;
}
}
if (vreg_info->ant_switch) {
ret = regulator_enable(vreg_info->ant_switch);
if (ret) {
pr_err("%s: regulator enable failed for ant_switch\n",
__func__);
goto error_enable_ant_switch;
}
}
if (vreg_info->soc_swreg) {
ret = regulator_enable(vreg_info->soc_swreg);
if (ret) {
pr_err("%s: regulator enable failed for external soc-swreg\n",
__func__);
goto error_enable_soc_swreg;
}
}
return ret;
error_enable_soc_swreg:
if (vreg_info->ant_switch)
regulator_disable(vreg_info->ant_switch);
error_enable_ant_switch:
if (vreg_info->wlan_reg_sp2t)
regulator_disable(vreg_info->wlan_reg_sp2t);
error_enable_reg_sp2t:
if (vreg_info->wlan_reg_xtal)
regulator_disable(vreg_info->wlan_reg_xtal);
error_enable_reg_xtal:
if (vreg_info->wlan_reg_io)
regulator_disable(vreg_info->wlan_reg_io);
error_enable_reg_io:
regulator_disable(vreg_info->wlan_reg);
error_enable:
if (vreg_info->wlan_reg_core)
regulator_disable(vreg_info->wlan_reg_core);
error_enable_reg_core:
return ret;
}
static int cnss_wlan_vreg_off(struct cnss_wlan_vreg_info *vreg_info)
{
int ret;
if (vreg_info->soc_swreg) {
ret = regulator_disable(vreg_info->soc_swreg);
if (ret) {
pr_err("%s: regulator disable failed for external soc-swreg\n",
__func__);
goto error_disable;
}
}
if (vreg_info->ant_switch) {
ret = regulator_disable(vreg_info->ant_switch);
if (ret) {
pr_err("%s: regulator disable failed for ant_switch\n",
__func__);
goto error_disable;
}
}
if (vreg_info->wlan_reg_sp2t) {
ret = regulator_disable(vreg_info->wlan_reg_sp2t);
if (ret) {
pr_err("%s: regulator disable failed for wlan_reg_sp2t\n",
__func__);
goto error_disable;
}
}
if (vreg_info->wlan_reg_xtal) {
ret = regulator_disable(vreg_info->wlan_reg_xtal);
if (ret) {
pr_err("%s: regulator disable failed for wlan_reg_xtal\n",
__func__);
goto error_disable;
}
}
if (vreg_info->wlan_reg_io) {
ret = regulator_disable(vreg_info->wlan_reg_io);
if (ret) {
pr_err("%s: regulator disable failed for wlan_reg_io\n",
__func__);
goto error_disable;
}
}
ret = regulator_disable(vreg_info->wlan_reg);
if (ret) {
pr_err("%s: regulator disable failed for WLAN power\n",
__func__);
goto error_disable;
}
if (vreg_info->wlan_reg_core) {
ret = regulator_disable(vreg_info->wlan_reg_core);
if (ret) {
pr_err("%s: regulator disable failed for wlan_reg_core\n",
__func__);
goto error_disable;
}
}
error_disable:
return ret;
}
static int cnss_wlan_vreg_set(struct cnss_wlan_vreg_info *vreg_info, bool state)
{
int ret = 0;
if (vreg_info->state == state) {
pr_debug("Already wlan vreg state is %s\n",
state ? "enabled" : "disabled");
goto out;
}
if (state)
ret = cnss_wlan_vreg_on(vreg_info);
else
ret = cnss_wlan_vreg_off(vreg_info);
if (ret)
goto out;
pr_debug("%s: wlan vreg is now %s\n", __func__,
state ? "enabled" : "disabled");
vreg_info->state = state;
out:
return ret;
}
static int cnss_wlan_gpio_init(struct cnss_wlan_gpio_info *info)
{
int ret = 0;
ret = gpio_request(info->num, info->name);
if (ret) {
pr_err("can't get gpio %s ret %d\n", info->name, ret);
goto err_gpio_req;
}
ret = gpio_direction_output(info->num, info->init);
if (ret) {
pr_err("can't set gpio direction %s ret %d\n", info->name, ret);
goto err_gpio_dir;
}
info->state = info->init;
return ret;
err_gpio_dir:
gpio_free(info->num);
err_gpio_req:
return ret;
}
static int cnss_wlan_bootstrap_gpio_init(void)
{
int ret = 0;
ret = gpio_request(penv->wlan_bootstrap_gpio, WLAN_BOOTSTRAP_GPIO_NAME);
if (ret) {
pr_err("%s: Can't get GPIO %s, ret = %d\n",
__func__, WLAN_BOOTSTRAP_GPIO_NAME, ret);
goto out;
}
ret = gpio_direction_output(penv->wlan_bootstrap_gpio,
WLAN_BOOTSTRAP_HIGH);
if (ret) {
pr_err("%s: Can't set GPIO %s direction, ret = %d\n",
__func__, WLAN_BOOTSTRAP_GPIO_NAME, ret);
gpio_free(penv->wlan_bootstrap_gpio);
goto out;
}
msleep(WLAN_BOOTSTRAP_DELAY);
out:
return ret;
}
static void cnss_wlan_gpio_set(struct cnss_wlan_gpio_info *info, bool state)
{
if (!info->prop)
return;
if (info->state == state) {
pr_debug("Already %s gpio is %s\n",
info->name, state ? "high" : "low");
return;
}
gpio_set_value(info->num, state);
info->state = state;
pr_debug("%s: %s gpio is now %s\n", __func__,
info->name, info->state ? "enabled" : "disabled");
}
static int cnss_pinctrl_init(struct cnss_wlan_gpio_info *gpio_info,
struct platform_device *pdev)
{
int ret;
gpio_info->pinctrl = devm_pinctrl_get(&pdev->dev);
if (IS_ERR_OR_NULL(gpio_info->pinctrl)) {
pr_err("%s: Failed to get pinctrl!\n", __func__);
return PTR_ERR(gpio_info->pinctrl);
}
gpio_info->gpio_state_default = pinctrl_lookup_state(gpio_info->pinctrl,
CNSS_PINCTRL_STATE_ACTIVE);
if (IS_ERR_OR_NULL(gpio_info->gpio_state_default)) {
pr_err("%s: Can not get active pin state!\n", __func__);
return PTR_ERR(gpio_info->gpio_state_default);
}
ret = pinctrl_select_state(gpio_info->pinctrl,
gpio_info->gpio_state_default);
return ret;
}
static int cnss_wlan_get_resources(struct platform_device *pdev)
{
int ret = 0;
struct cnss_wlan_gpio_info *gpio_info = &penv->gpio_info;
struct cnss_wlan_vreg_info *vreg_info = &penv->vreg_info;
if (of_get_property(pdev->dev.of_node,
WLAN_VREG_CORE_NAME"-supply", NULL)) {
vreg_info->wlan_reg_core = regulator_get(&pdev->dev,
WLAN_VREG_CORE_NAME);
if (IS_ERR(vreg_info->wlan_reg_core)) {
ret = PTR_ERR(vreg_info->wlan_reg_core);
if (ret == -EPROBE_DEFER) {
pr_err("%s: wlan_reg_core probe deferred!\n",
__func__);
} else {
pr_err("%s: Get wlan_reg_core failed!\n",
__func__);
}
goto err_reg_core_get;
}
ret = regulator_set_voltage(vreg_info->wlan_reg_core,
WLAN_VREG_CORE_MIN, WLAN_VREG_CORE_MAX);
if (ret) {
pr_err("%s: Set wlan_reg_core failed!\n", __func__);
goto err_reg_core_set;
}
ret = regulator_enable(vreg_info->wlan_reg_core);
if (ret) {
pr_err("%s: Enable wlan_reg_core failed!\n", __func__);
goto err_reg_core_enable;
}
}
vreg_info->wlan_reg = regulator_get(&pdev->dev, WLAN_VREG_NAME);
if (IS_ERR(vreg_info->wlan_reg)) {
if (PTR_ERR(vreg_info->wlan_reg) == -EPROBE_DEFER)
pr_err("%s: vreg probe defer\n", __func__);
else
pr_err("%s: vreg regulator get failed\n", __func__);
ret = PTR_ERR(vreg_info->wlan_reg);
goto err_reg_get;
}
ret = regulator_enable(vreg_info->wlan_reg);
if (ret) {
pr_err("%s: vreg initial vote failed\n", __func__);
goto err_reg_enable;
}
if (of_get_property(pdev->dev.of_node,
WLAN_VREG_IO_NAME"-supply", NULL)) {
vreg_info->wlan_reg_io = regulator_get(&pdev->dev,
WLAN_VREG_IO_NAME);
if (!IS_ERR(vreg_info->wlan_reg_io)) {
ret = regulator_set_voltage(vreg_info->wlan_reg_io,
WLAN_VREG_IO_MIN, WLAN_VREG_IO_MAX);
if (ret) {
pr_err("%s: Set wlan_vreg_io failed!\n",
__func__);
goto err_reg_io_set;
}
ret = regulator_enable(vreg_info->wlan_reg_io);
if (ret) {
pr_err("%s: Enable wlan_vreg_io failed!\n",
__func__);
goto err_reg_io_enable;
}
}
}
if (of_get_property(pdev->dev.of_node,
WLAN_VREG_XTAL_NAME"-supply", NULL)) {
vreg_info->wlan_reg_xtal =
regulator_get(&pdev->dev, WLAN_VREG_XTAL_NAME);
if (!IS_ERR(vreg_info->wlan_reg_xtal)) {
ret = regulator_set_voltage(vreg_info->wlan_reg_xtal,
WLAN_VREG_XTAL_MIN, WLAN_VREG_XTAL_MAX);
if (ret) {
pr_err("%s: Set wlan_vreg_xtal failed!\n",
__func__);
goto err_reg_xtal_set;
}
ret = regulator_enable(vreg_info->wlan_reg_xtal);
if (ret) {
pr_err("%s: Enable wlan_vreg_xtal failed!\n",
__func__);
goto err_reg_xtal_enable;
}
}
}
if (of_get_property(pdev->dev.of_node,
WLAN_VREG_SP2T_NAME"-supply", NULL)) {
vreg_info->wlan_reg_sp2t =
regulator_get(&pdev->dev, WLAN_VREG_SP2T_NAME);
if (!IS_ERR(vreg_info->wlan_reg_sp2t)) {
ret = regulator_set_voltage(vreg_info->wlan_reg_sp2t,
WLAN_VREG_SP2T_MIN, WLAN_VREG_SP2T_MAX);
if (ret) {
pr_err("%s: Set wlan_vreg_sp2t failed!\n",
__func__);
goto err_reg_sp2t_set;
}
ret = regulator_enable(vreg_info->wlan_reg_sp2t);
if (ret) {
pr_err("%s: Enable wlan_vreg_sp2t failed!\n",
__func__);
goto err_reg_sp2t_enable;
}
}
}
if (of_get_property(pdev->dev.of_node,
WLAN_ANT_SWITCH_NAME "-supply", NULL)) {
vreg_info->ant_switch =
regulator_get(&pdev->dev, WLAN_ANT_SWITCH_NAME);
if (!IS_ERR(vreg_info->ant_switch)) {
ret = regulator_set_voltage(vreg_info->ant_switch,
WLAN_ANT_SWITCH_VOLT_MIN,
WLAN_ANT_SWITCH_VOLT_MAX);
if (ret < 0) {
pr_err("%s: Set ant_switch voltage failed!\n",
__func__);
goto err_ant_switch_set;
}
ret = regulator_set_optimum_mode(vreg_info->ant_switch,
WLAN_ANT_SWITCH_CURR);
if (ret < 0) {
pr_err("%s: Set ant_switch current failed!\n",
__func__);
goto err_ant_switch_set;
}
ret = regulator_enable(vreg_info->ant_switch);
if (ret < 0) {
pr_err("%s: Enable ant_switch failed!\n",
__func__);
goto err_ant_switch_enable;
}
}
}
if (of_find_property((&pdev->dev)->of_node,
"qcom,wlan-uart-access", NULL))
penv->cap.cap_flag |= CNSS_HAS_UART_ACCESS;
if (of_get_property(pdev->dev.of_node,
WLAN_SWREG_NAME"-supply", NULL)) {
vreg_info->soc_swreg = regulator_get(&pdev->dev,
WLAN_SWREG_NAME);
if (IS_ERR(vreg_info->soc_swreg)) {
pr_err("%s: soc-swreg node not found\n",
__func__);
goto err_reg_get2;
}
ret = regulator_set_voltage(vreg_info->soc_swreg,
SOC_SWREG_VOLT_MIN, SOC_SWREG_VOLT_MAX);
if (ret) {
pr_err("%s: vreg initial voltage set failed on soc-swreg\n",
__func__);
goto err_reg_set;
}
ret = regulator_enable(vreg_info->soc_swreg);
if (ret) {
pr_err("%s: vreg initial vote failed\n", __func__);
goto err_reg_enable2;
}
penv->cap.cap_flag |= CNSS_HAS_EXTERNAL_SWREG;
}
vreg_info->state = VREG_ON;
if (!of_find_property((&pdev->dev)->of_node, gpio_info->name, NULL)) {
gpio_info->prop = false;
goto end;
}
gpio_info->prop = true;
ret = of_get_named_gpio((&pdev->dev)->of_node,
gpio_info->name, 0);
if (ret >= 0) {
gpio_info->num = ret;
ret = 0;
} else {
if (ret == -EPROBE_DEFER)
pr_debug("get WLAN_EN GPIO probe defer\n");
else
pr_err("can't get gpio %s ret %d",
gpio_info->name, ret);
goto err_get_gpio;
}
ret = cnss_pinctrl_init(gpio_info, pdev);
if (ret) {
pr_err("%s: pinctrl init failed!\n", __func__);
goto err_pinctrl_init;
}
ret = cnss_wlan_gpio_init(gpio_info);
if (ret) {
pr_err("gpio init failed\n");
goto err_gpio_init;
}
if (of_find_property((&pdev->dev)->of_node,
WLAN_BOOTSTRAP_GPIO_NAME, NULL)) {
penv->wlan_bootstrap_gpio =
of_get_named_gpio((&pdev->dev)->of_node,
WLAN_BOOTSTRAP_GPIO_NAME, 0);
if (penv->wlan_bootstrap_gpio > 0) {
ret = cnss_wlan_bootstrap_gpio_init();
if (ret)
goto err_gpio_init;
} else {
if (ret == -EPROBE_DEFER) {
pr_debug("%s: Get GPIO %s probe defer\n",
__func__, WLAN_BOOTSTRAP_GPIO_NAME);
} else {
pr_err("%s: Can't get GPIO %s, ret = %d",
__func__, WLAN_BOOTSTRAP_GPIO_NAME,
ret);
}
goto err_gpio_init;
}
}
end:
return ret;
err_gpio_init:
err_pinctrl_init:
err_get_gpio:
if (vreg_info->soc_swreg)
regulator_disable(vreg_info->soc_swreg);
vreg_info->state = VREG_OFF;
err_reg_enable2:
err_reg_set:
if (vreg_info->soc_swreg)
regulator_put(vreg_info->soc_swreg);
err_reg_get2:
if (vreg_info->ant_switch)
regulator_disable(vreg_info->ant_switch);
err_ant_switch_enable:
err_ant_switch_set:
if (vreg_info->ant_switch)
regulator_put(vreg_info->ant_switch);
if (vreg_info->wlan_reg_sp2t)
regulator_disable(vreg_info->wlan_reg_sp2t);
err_reg_sp2t_enable:
err_reg_sp2t_set:
if (vreg_info->wlan_reg_sp2t)
regulator_put(vreg_info->wlan_reg_sp2t);
if (vreg_info->wlan_reg_xtal)
regulator_disable(vreg_info->wlan_reg_xtal);
err_reg_xtal_enable:
err_reg_xtal_set:
if (vreg_info->wlan_reg_xtal)
regulator_put(vreg_info->wlan_reg_xtal);
if (vreg_info->wlan_reg_io)
regulator_disable(vreg_info->wlan_reg_io);
err_reg_io_enable:
err_reg_io_set:
if (vreg_info->wlan_reg_io)
regulator_put(vreg_info->wlan_reg_io);
regulator_disable(vreg_info->wlan_reg);
err_reg_enable:
regulator_put(vreg_info->wlan_reg);
err_reg_get:
if (vreg_info->wlan_reg_core)
regulator_disable(vreg_info->wlan_reg_core);
err_reg_core_enable:
err_reg_core_set:
if (vreg_info->wlan_reg_core)
regulator_put(vreg_info->wlan_reg_core);
err_reg_core_get:
return ret;
}
static void cnss_wlan_release_resources(void)
{
struct cnss_wlan_gpio_info *gpio_info = &penv->gpio_info;
struct cnss_wlan_vreg_info *vreg_info = &penv->vreg_info;
if (penv->wlan_bootstrap_gpio > 0)
gpio_free(penv->wlan_bootstrap_gpio);
gpio_free(gpio_info->num);
gpio_info->state = WLAN_EN_LOW;
gpio_info->prop = false;
cnss_wlan_vreg_set(vreg_info, VREG_OFF);
if (vreg_info->soc_swreg)
regulator_put(vreg_info->soc_swreg);
if (vreg_info->ant_switch)
regulator_put(vreg_info->ant_switch);
if (vreg_info->wlan_reg_sp2t)
regulator_put(vreg_info->wlan_reg_sp2t);
if (vreg_info->wlan_reg_xtal)
regulator_put(vreg_info->wlan_reg_xtal);
if (vreg_info->wlan_reg_io)
regulator_put(vreg_info->wlan_reg_io);
regulator_put(vreg_info->wlan_reg);
if (vreg_info->wlan_reg_core)
regulator_put(vreg_info->wlan_reg_core);
vreg_info->state = VREG_OFF;
}
static u8 cnss_get_pci_dev_bus_number(struct pci_dev *pdev)
{
return pdev->bus->number;
}
void cnss_setup_fw_files(u16 revision)
{
switch (revision) {
case QCA6174_FW_1_1:
strlcpy(penv->fw_files.image_file, "qwlan11.bin",
CNSS_MAX_FILE_NAME);
strlcpy(penv->fw_files.board_data, "bdwlan11.bin",
CNSS_MAX_FILE_NAME);
strlcpy(penv->fw_files.otp_data, "otp11.bin",
CNSS_MAX_FILE_NAME);
strlcpy(penv->fw_files.utf_file, "utf11.bin",
CNSS_MAX_FILE_NAME);
strlcpy(penv->fw_files.utf_board_data, "utfbd11.bin",
CNSS_MAX_FILE_NAME);
break;
case QCA6174_FW_1_3:
strlcpy(penv->fw_files.image_file, "qwlan13.bin",
CNSS_MAX_FILE_NAME);
strlcpy(penv->fw_files.board_data, "bdwlan13.bin",
CNSS_MAX_FILE_NAME);
strlcpy(penv->fw_files.otp_data, "otp13.bin",
CNSS_MAX_FILE_NAME);
strlcpy(penv->fw_files.utf_file, "utf13.bin",
CNSS_MAX_FILE_NAME);
strlcpy(penv->fw_files.utf_board_data, "utfbd13.bin",
CNSS_MAX_FILE_NAME);
break;
case QCA6174_FW_2_0:
strlcpy(penv->fw_files.image_file, "qwlan20.bin",
CNSS_MAX_FILE_NAME);
strlcpy(penv->fw_files.board_data, "bdwlan20.bin",
CNSS_MAX_FILE_NAME);
strlcpy(penv->fw_files.otp_data, "otp20.bin",
CNSS_MAX_FILE_NAME);
strlcpy(penv->fw_files.utf_file, "utf20.bin",
CNSS_MAX_FILE_NAME);
strlcpy(penv->fw_files.utf_board_data, "utfbd20.bin",
CNSS_MAX_FILE_NAME);
break;
case QCA6174_FW_3_0:
case QCA6174_FW_3_2:
strlcpy(penv->fw_files.image_file, "qwlan30.bin",
CNSS_MAX_FILE_NAME);
strlcpy(penv->fw_files.board_data, "bdwlan30.bin",
CNSS_MAX_FILE_NAME);
strlcpy(penv->fw_files.otp_data, "otp30.bin",
CNSS_MAX_FILE_NAME);
strlcpy(penv->fw_files.utf_file, "utf30.bin",
CNSS_MAX_FILE_NAME);
strlcpy(penv->fw_files.utf_board_data, "utfbd30.bin",
CNSS_MAX_FILE_NAME);
break;
default:
strlcpy(penv->fw_files.image_file, "qwlan.bin",
CNSS_MAX_FILE_NAME);
strlcpy(penv->fw_files.board_data, "bdwlan.bin",
CNSS_MAX_FILE_NAME);
strlcpy(penv->fw_files.otp_data, "otp.bin",
CNSS_MAX_FILE_NAME);
strlcpy(penv->fw_files.utf_file, "utf.bin",
CNSS_MAX_FILE_NAME);
strlcpy(penv->fw_files.utf_board_data, "utfbd.bin",
CNSS_MAX_FILE_NAME);
break;
}
}
int cnss_get_fw_files(struct cnss_fw_files *pfw_files)
{
if (!penv || !pfw_files)
return -ENODEV;
*pfw_files = penv->fw_files;
return 0;
}
EXPORT_SYMBOL(cnss_get_fw_files);
int cnss_get_fw_files_for_target(struct cnss_fw_files *pfw_files,
u32 target_type, u32 target_version)
{
if (!pfw_files)
return -ENODEV;
switch (target_version) {
case AR6320_REV1_VERSION:
case AR6320_REV1_1_VERSION:
memcpy(pfw_files, &FW_FILES_QCA6174_FW_1_1, sizeof(*pfw_files));
break;
case AR6320_REV1_3_VERSION:
memcpy(pfw_files, &FW_FILES_QCA6174_FW_1_3, sizeof(*pfw_files));
break;
case AR6320_REV2_1_VERSION:
memcpy(pfw_files, &FW_FILES_QCA6174_FW_2_0, sizeof(*pfw_files));
break;
case AR6320_REV3_VERSION:
case AR6320_REV3_2_VERSION:
memcpy(pfw_files, &FW_FILES_QCA6174_FW_3_0, sizeof(*pfw_files));
break;
default:
memcpy(pfw_files, &FW_FILES_DEFAULT, sizeof(*pfw_files));
pr_err("%s version mismatch 0x%X 0x%X",
__func__, target_type, target_version);
break;
}
return 0;
}
EXPORT_SYMBOL(cnss_get_fw_files_for_target);
#ifdef CONFIG_CNSS_SECURE_FW
static void cnss_wlan_fw_mem_alloc(struct pci_dev *pdev)
{
penv->fw_mem = devm_kzalloc(&pdev->dev, MAX_FIRMWARE_SIZE, GFP_KERNEL);
if (!penv->fw_mem)
pr_debug("Memory not available for Secure FW\n");
}
#else
static void cnss_wlan_fw_mem_alloc(struct pci_dev *pdev)
{
}
#endif
static int get_image_file(const u8 *index_info, u8 *file_name,
u32 *type, u32 *segment_idx)
{
if (!file_name || !index_info || !type)
return -EINVAL;
memcpy(type, index_info, TYPE_LENGTH);
memcpy(segment_idx, index_info + TYPE_LENGTH, TYPE_LENGTH);
memcpy(file_name, index_info + TYPE_LENGTH + TYPE_LENGTH,
FW_FILENAME_LENGTH);
pr_debug("%u: %u: %s", *type, *segment_idx, file_name);
return PER_FILE_DATA;
}
static void print_allocated_image_table(void)
{
u32 seg = 0, count = 0;
u8 *dump_addr;
struct segment_memory *pseg_mem = penv->fw_seg_mem;
struct segment_memory *p_bdata_seg_mem = penv->bdata_seg_mem;
pr_debug("%s: Dumping FW IMAGE\n", __func__);
while (seg++ < penv->fw_seg_count) {
dump_addr = (u8 *)pseg_mem->cpu_region +
sizeof(struct region_desc);
for (count = 0; count < pseg_mem->size -
sizeof(struct region_desc); count++)
pr_debug("%02x", dump_addr[count]);
pseg_mem++;
}
seg = 0;
pr_debug("%s: Dumping BOARD DATA\n", __func__);
while (seg++ < penv->bdata_seg_count) {
dump_addr = (u8 *)p_bdata_seg_mem->cpu_region +
sizeof(struct region_desc);
for (count = 0; count < p_bdata_seg_mem->size -
sizeof(struct region_desc); count++)
pr_debug("%02x ", dump_addr[count]);
p_bdata_seg_mem++;
}
}
static void free_allocated_image_table(void)
{
struct device *dev = &penv->pdev->dev;
struct segment_memory *pseg_mem;
u32 seg = 0;
/* free fw memroy */
pseg_mem = penv->fw_seg_mem;
while (seg++ < penv->fw_seg_count) {
dma_free_coherent(dev, pseg_mem->size,
pseg_mem->cpu_region, pseg_mem->dma_region);
pseg_mem++;
}
if (penv->fw_cpu)
dma_free_coherent(dev,
sizeof(struct segment_desc) * MAX_NUM_OF_SEGMENTS,
penv->fw_cpu, penv->fw_dma);
penv->fw_seg_count = 0;
penv->fw_dma = 0;
penv->fw_cpu = NULL;
penv->fw_dma_size = 0;
/* free bdata memory */
seg = 0;
pseg_mem = penv->bdata_seg_mem;
while (seg++ < penv->bdata_seg_count) {
dma_free_coherent(dev, pseg_mem->size,
pseg_mem->cpu_region, pseg_mem->dma_region);
pseg_mem++;
}
if (penv->bdata_cpu)
dma_free_coherent(dev,
sizeof(struct segment_desc) * MAX_NUM_OF_SEGMENTS,
penv->bdata_cpu, penv->bdata_dma);
penv->bdata_seg_count = 0;
penv->bdata_dma = 0;
penv->bdata_cpu = NULL;
penv->bdata_dma_size = 0;
}
static int cnss_setup_fw_image_table(int mode)
{
struct image_desc_hdr *image_hdr;
struct segment_desc *pseg = NULL;
const struct firmware *fw_index, *fw_image;
struct device *dev = NULL;
char reserved[3] = "";
u8 image_file[FW_FILENAME_LENGTH] = "";
u8 index_file[FW_FILENAME_LENGTH] = "";
u8 index_info[MAX_INDEX_FILE_SIZE] = "";
size_t image_desc_size = 0, file_size = 0;
size_t index_pos = 0, image_pos = 0;
struct region_desc *reg_desc = NULL;
u32 type = 0;
u32 segment_idx = 0;
uintptr_t address;
int ret = 0;
dma_addr_t dma_addr;
void *vaddr = NULL;
dma_addr_t paddr;
struct segment_memory *pseg_mem;
u32 *pseg_count;
if (!penv || !penv->pdev) {
pr_err("cnss: invalid penv or pdev or dev\n");
ret = -EINVAL;
goto err;
}
dev = &penv->pdev->dev;
/* meta data file has image details */
switch (mode) {
case FW_IMAGE_FTM:
ret = scnprintf(index_file, FW_FILENAME_LENGTH, "qftm.bin");
pseg_mem = penv->fw_seg_mem;
pseg_count = &penv->fw_seg_count;
break;
case FW_IMAGE_MISSION:
ret = scnprintf(index_file, FW_FILENAME_LENGTH, "qwlan.bin");
pseg_mem = penv->fw_seg_mem;
pseg_count = &penv->fw_seg_count;
break;
case FW_IMAGE_BDATA:
ret = scnprintf(index_file, FW_FILENAME_LENGTH, "bdwlan.bin");
pseg_mem = penv->bdata_seg_mem;
pseg_count = &penv->bdata_seg_count;
break;
default:
pr_err("%s: Unknown meta data file type 0x%x\n",
__func__, mode);
ret = -EINVAL;
}
if (ret < 0)
goto err;
image_desc_size = sizeof(struct image_desc_hdr) +
sizeof(struct segment_desc) * MAX_NUM_OF_SEGMENTS;
vaddr = dma_alloc_coherent(dev, image_desc_size,
&paddr, GFP_KERNEL);
if (!vaddr) {
pr_err("cnss: image desc allocation failure\n");
ret = -ENOMEM;
goto err;
}
memset(vaddr, 0, image_desc_size);
image_hdr = (struct image_desc_hdr *)vaddr;
image_hdr->image_id = mode;
memcpy(image_hdr->reserved, reserved, 3);
pr_err("cnss: request meta data file %s\n", index_file);
ret = request_firmware(&fw_index, index_file, dev);
if (ret || !fw_index || !fw_index->data || !fw_index->size) {
pr_err("cnss: meta data file open failure %s\n", index_file);
goto err_free;
}
if (fw_index->size > MAX_INDEX_FILE_SIZE) {
pr_err("cnss: meta data file has invalid size %s: %zu\n",
index_file, fw_index->size);
release_firmware(fw_index);
goto err_free;
}
memcpy(index_info, fw_index->data, fw_index->size);
file_size = fw_index->size;
release_firmware(fw_index);
while (file_size >= PER_FILE_DATA && image_pos < image_desc_size &&
image_hdr->segments_cnt < MAX_NUM_OF_SEGMENTS) {
ret = get_image_file(index_info + index_pos,
image_file, &type, &segment_idx);
if (ret == -EINVAL)
goto err_free;
file_size -= ret;
index_pos += ret;
pseg = vaddr + image_pos +
sizeof(struct image_desc_hdr);
switch (type) {
case SEG_METADATA:
case SEG_NON_PAGED:
case SEG_LOCKED_PAGE:
case SEG_UNLOCKED_PAGE:
case SEG_NON_SECURE_DATA:
image_hdr->segments_cnt++;
pseg->segment_id = type;
pseg->segment_idx = (u8)(segment_idx & 0xff);
memcpy(pseg->flags, reserved, 2);
ret = request_firmware(&fw_image, image_file, dev);
if (ret || !fw_image || !fw_image->data ||
!fw_image->size) {
pr_err("cnss: image file read failed %s",
image_file);
goto err_free;
}
if (fw_image->size > MAX_IMAGE_SIZE) {
pr_err("cnss: %s: image file invalid size %zu\n",
image_file, fw_image->size);
release_firmware(fw_image);
ret = -EINVAL;
goto err_free;
}
reg_desc = dma_alloc_coherent(dev,
sizeof(struct region_desc) + fw_image->size,
&dma_addr, GFP_KERNEL);
if (!reg_desc) {
pr_err("cnss: region allocation failure\n");
ret = -ENOMEM;
release_firmware(fw_image);
goto err_free;
}
address = (uintptr_t) dma_addr;
pseg->addr_low = address & 0xFFFFFFFF;
pseg->addr_high = 0x00;
/* one region for one image file */
pseg->addr_count = 1;
memcpy((u8 *)reg_desc + sizeof(struct region_desc),
fw_image->data, fw_image->size);
address += sizeof(struct region_desc);
reg_desc->addr_low = address & 0xFFFFFFFF;
reg_desc->addr_high = 0x00;
reg_desc->reserved = 0;
reg_desc->size = fw_image->size;
pseg_mem[*pseg_count].dma_region = dma_addr;
pseg_mem[*pseg_count].cpu_region = reg_desc;
pseg_mem[*pseg_count].size =
sizeof(struct region_desc) + fw_image->size;
release_firmware(fw_image);
(*pseg_count)++;
break;
default:
pr_err("cnss: Unknown segment %d", type);
ret = -EINVAL;
goto err_free;
}
image_pos += sizeof(struct segment_desc);
}
if (mode != FW_IMAGE_BDATA) {
penv->fw_cpu = vaddr;
penv->fw_dma = paddr;
penv->fw_dma_size = sizeof(struct image_desc_hdr) +
sizeof(struct segment_desc) * image_hdr->segments_cnt;
} else {
penv->bdata_cpu = vaddr;
penv->bdata_dma = paddr;
penv->bdata_dma_size = sizeof(struct image_desc_hdr) +
sizeof(struct segment_desc) * image_hdr->segments_cnt;
}
pr_info("%s: Mode %d: Image setup table built on host", __func__, mode);
return file_size;
err_free:
free_allocated_image_table();
err:
pr_err("cnss: image file setup failed %d\n", ret);
return ret;
}
int cnss_get_fw_image(struct image_desc_info *image_desc_info)
{
if (!image_desc_info || !penv ||
!penv->fw_seg_count || !penv->bdata_seg_count)
return -EINVAL;
image_desc_info->fw_addr = penv->fw_dma;
image_desc_info->fw_size = penv->fw_dma_size;
image_desc_info->bdata_addr = penv->bdata_dma;
image_desc_info->bdata_size = penv->bdata_dma_size;
return 0;
}
EXPORT_SYMBOL(cnss_get_fw_image);
static ssize_t wlan_setup_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
if (!penv)
return -ENODEV;
return scnprintf(buf, PAGE_SIZE, "%u\n", penv->revision_id);
}
static DEVICE_ATTR(wlan_setup, S_IRUSR,
wlan_setup_show, NULL);
static int cnss_wlan_is_codeswap_supported(u16 revision)
{
switch (revision) {
case QCA6174_FW_3_0:
case QCA6174_FW_3_2:
return 0;
default:
return 1;
}
}
static int cnss_smmu_init(struct device *dev)
{
struct dma_iommu_mapping *mapping;
int disable_htw = 1;
int atomic_ctx = 1;
int ret;
mapping = arm_iommu_create_mapping(&platform_bus_type,
penv->smmu_iova_start,
penv->smmu_iova_len);
if (IS_ERR(mapping)) {
pr_err("%s: create mapping failed, err = %d\n", __func__, ret);
ret = PTR_ERR(mapping);
goto map_fail;
}
ret = iommu_domain_set_attr(mapping->domain,
DOMAIN_ATTR_COHERENT_HTW_DISABLE,
&disable_htw);
if (ret) {
pr_err("%s: set disable_htw attribute failed, err = %d\n",
__func__, ret);
goto set_attr_fail;
}
ret = iommu_domain_set_attr(mapping->domain,
DOMAIN_ATTR_ATOMIC,
&atomic_ctx);
if (ret) {
pr_err("%s: set atomic_ctx attribute failed, err = %d\n",
__func__, ret);
goto set_attr_fail;
}
ret = arm_iommu_attach_device(dev, mapping);
if (ret) {
pr_err("%s: attach device failed, err = %d\n", __func__, ret);
goto attach_fail;
}
penv->smmu_mapping = mapping;
return ret;
attach_fail:
set_attr_fail:
arm_iommu_release_mapping(mapping);
map_fail:
return ret;
}
static void cnss_smmu_remove(struct device *dev)
{
arm_iommu_detach_device(dev);
arm_iommu_release_mapping(penv->smmu_mapping);
penv->smmu_mapping = NULL;
}
static int cnss_wlan_pci_probe(struct pci_dev *pdev,
const struct pci_device_id *id)
{
int ret = 0;
struct cnss_wlan_vreg_info *vreg_info = &penv->vreg_info;
struct cnss_wlan_gpio_info *gpio_info = &penv->gpio_info;
void *cpu_addr;
dma_addr_t dma_handle;
struct codeswap_codeseg_info *cnss_seg_info = NULL;
struct device *dev = &pdev->dev;
penv->pdev = pdev;
penv->id = id;
penv->fw_available = false;
penv->device_id = pdev->device;
if (penv->smmu_iova_len) {
ret = cnss_smmu_init(&pdev->dev);
if (ret) {
pr_err("%s: SMMU init failed, err = %d\n",
__func__, ret);
goto smmu_init_fail;
}
}
if (penv->pci_register_again) {
pr_debug("%s: PCI re-registration complete\n", __func__);
penv->pci_register_again = false;
return 0;
}
switch (pdev->device) {
case QCA6180_DEVICE_ID:
pci_read_config_word(pdev, QCA6180_REV_ID_OFFSET,
&penv->revision_id);
break;
case QCA6174_DEVICE_ID:
pci_read_config_word(pdev, QCA6174_REV_ID_OFFSET,
&penv->revision_id);
cnss_setup_fw_files(penv->revision_id);
break;
default:
pr_err("cnss: unknown device found %d\n", pdev->device);
ret = -EPROBE_DEFER;
goto err_unknown;
}
if (penv->pcie_link_state) {
pci_save_state(pdev);
penv->saved_state = pci_store_saved_state(pdev);
ret = msm_pcie_pm_control(MSM_PCIE_SUSPEND,
cnss_get_pci_dev_bus_number(pdev),
pdev, NULL, PM_OPTIONS);
if (ret) {
pr_err("Failed to shutdown PCIe link\n");
goto err_pcie_suspend;
}
penv->pcie_link_state = PCIE_LINK_DOWN;
}
cnss_wlan_gpio_set(gpio_info, WLAN_EN_LOW);
ret = cnss_wlan_vreg_set(vreg_info, VREG_OFF);
if (ret) {
pr_err("can't turn off wlan vreg\n");
goto err_pcie_suspend;
}
cnss_wlan_fw_mem_alloc(pdev);
ret = device_create_file(&penv->pldev->dev, &dev_attr_wlan_setup);
if (ret) {
pr_err("Can't Create Device file\n");
goto err_pcie_suspend;
}
if (cnss_wlan_is_codeswap_supported(penv->revision_id)) {
pr_debug("Code-swap not enabled: %d\n", penv->revision_id);
goto err_pcie_suspend;
}
cpu_addr = dma_alloc_coherent(dev, EVICT_BIN_MAX_SIZE,
&dma_handle, GFP_KERNEL);
if (!cpu_addr || !dma_handle) {
pr_err("cnss: Memory Alloc failed for codeswap feature\n");
goto err_pcie_suspend;
}
memset(cpu_addr, 0, EVICT_BIN_MAX_SIZE);
cnss_seg_info = devm_kzalloc(dev, sizeof(*cnss_seg_info),
GFP_KERNEL);
if (!cnss_seg_info) {
pr_err("Fail to allocate memory for cnss_seg_info\n");
goto end_dma_alloc;
}
memset(cnss_seg_info, 0, sizeof(*cnss_seg_info));
cnss_seg_info->codeseg_busaddr[0] = (void *)dma_handle;
penv->codeseg_cpuaddr[0] = cpu_addr;
cnss_seg_info->codeseg_size = EVICT_BIN_MAX_SIZE;
cnss_seg_info->codeseg_total_bytes = EVICT_BIN_MAX_SIZE;
cnss_seg_info->num_codesegs = 1;
cnss_seg_info->codeseg_size_log2 = ilog2(EVICT_BIN_MAX_SIZE);
penv->cnss_seg_info = cnss_seg_info;
pr_debug("%s: Successfully allocated memory for CODESWAP\n", __func__);
return ret;
end_dma_alloc:
dma_free_coherent(dev, EVICT_BIN_MAX_SIZE, cpu_addr, dma_handle);
err_unknown:
err_pcie_suspend:
smmu_init_fail:
return ret;
}
static void cnss_wlan_pci_remove(struct pci_dev *pdev)
{
struct device *dev;
if (!penv)
return;
dev = &penv->pldev->dev;
device_remove_file(dev, &dev_attr_wlan_setup);
if (penv->smmu_mapping)
cnss_smmu_remove(&pdev->dev);
}
static int cnss_wlan_pci_suspend(struct device *dev)
{
int ret = 0;
struct cnss_wlan_driver *wdriver;
struct pci_dev *pdev = to_pci_dev(dev);
pm_message_t state = { .event = PM_EVENT_SUSPEND };
if (!penv)
goto out;
wdriver = penv->driver;
if (!wdriver)
goto out;
if (wdriver->suspend) {
ret = wdriver->suspend(pdev, state);
if (penv->pcie_link_state) {
pci_save_state(pdev);
penv->saved_state = pci_store_saved_state(pdev);
}
}
penv->monitor_wake_intr = false;
out:
return ret;
}
static int cnss_wlan_pci_resume(struct device *dev)
{
int ret = 0;
struct cnss_wlan_driver *wdriver;
struct pci_dev *pdev = to_pci_dev(dev);
if (!penv)
goto out;
wdriver = penv->driver;
if (!wdriver)
goto out;
if (wdriver->resume && !penv->pcie_link_down_ind) {
if (penv->saved_state)
pci_load_and_free_saved_state(pdev,
&penv->saved_state);
pci_restore_state(pdev);
ret = wdriver->resume(pdev);
}
out:
return ret;
}
static int cnss_wlan_runtime_suspend(struct device *dev)
{
int ret = 0;
struct cnss_wlan_driver *wdrv;
if (!penv)
return -EAGAIN;
if (penv->pcie_link_down_ind) {
pr_debug("PCI link down recovery is in progress!\n");
return -EAGAIN;
}
pr_debug("cnss: runtime suspend start\n");
wdrv = penv->driver;
if (wdrv && wdrv->runtime_ops && wdrv->runtime_ops->runtime_suspend)
ret = wdrv->runtime_ops->runtime_suspend(to_pci_dev(dev));
pr_info("cnss: runtime suspend status: %d\n", ret);
return ret;
}
static int cnss_wlan_runtime_resume(struct device *dev)
{
struct cnss_wlan_driver *wdrv;
int ret = 0;
if (!penv)
return -EAGAIN;
if (penv->pcie_link_down_ind) {
pr_debug("PCI link down recovery is in progress!\n");
return -EAGAIN;
}
pr_debug("cnss: runtime resume start\n");
wdrv = penv->driver;
if (wdrv && wdrv->runtime_ops && wdrv->runtime_ops->runtime_resume)
ret = wdrv->runtime_ops->runtime_resume(to_pci_dev(dev));
pr_info("cnss: runtime resume status: %d\n", ret);
return ret;
}
static int cnss_wlan_runtime_idle(struct device *dev)
{
pr_debug("cnss: runtime idle\n");
pm_request_autosuspend(dev);
return -EBUSY;
}
static DECLARE_RWSEM(cnss_pm_sem);
static int cnss_pm_notify(struct notifier_block *b,
unsigned long event, void *p)
{
switch (event) {
case PM_SUSPEND_PREPARE:
down_write(&cnss_pm_sem);
break;
case PM_POST_SUSPEND:
up_write(&cnss_pm_sem);
break;
}
return NOTIFY_DONE;
}
static struct notifier_block cnss_pm_notifier = {
.notifier_call = cnss_pm_notify,
};
static DEFINE_PCI_DEVICE_TABLE(cnss_wlan_pci_id_table) = {
{ QCA6174_VENDOR_ID, QCA6174_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID },
{ QCA6174_VENDOR_ID, BEELINER_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID },
{ QCA6180_VENDOR_ID, QCA6180_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID },
{ 0 }
};
MODULE_DEVICE_TABLE(pci, cnss_wlan_pci_id_table);
#ifdef CONFIG_PM
static const struct dev_pm_ops cnss_wlan_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(cnss_wlan_pci_suspend, cnss_wlan_pci_resume)
SET_RUNTIME_PM_OPS(cnss_wlan_runtime_suspend, cnss_wlan_runtime_resume,
cnss_wlan_runtime_idle)
};
#endif
struct pci_driver cnss_wlan_pci_driver = {
.name = "cnss_wlan_pci",
.id_table = cnss_wlan_pci_id_table,
.probe = cnss_wlan_pci_probe,
.remove = cnss_wlan_pci_remove,
#ifdef CONFIG_PM
.driver = {
.pm = &cnss_wlan_pm_ops,
},
#endif
};
static ssize_t fw_image_setup_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
if (!penv)
return -ENODEV;
return scnprintf(buf, PAGE_SIZE, "%u\n", penv->fw_image_setup);
}
static ssize_t fw_image_setup_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
int val;
int ret;
if (!penv)
return -ENODEV;
if (sscanf(buf, "%d", &val) != 1)
return -EINVAL;
if (val == FW_IMAGE_FTM || val == FW_IMAGE_MISSION
|| val == FW_IMAGE_BDATA) {
pr_info("%s: fw image setup triggered %d\n", __func__, val);
ret = cnss_setup_fw_image_table(val);
if (ret != 0) {
pr_err("%s: Invalid parsing of FW image files %d",
__func__, ret);
return -EINVAL;
}
penv->fw_image_setup = val;
} else if (val == FW_IMAGE_PRINT) {
print_allocated_image_table();
} else if (val == BMI_TEST_SETUP) {
penv->bmi_test = val;
}
return count;
}
static DEVICE_ATTR(fw_image_setup, S_IRUSR | S_IWUSR,
fw_image_setup_show, fw_image_setup_store);
void recovery_work_handler(struct work_struct *recovery)
{
cnss_device_self_recovery();
}
DECLARE_WORK(recovery_work, recovery_work_handler);
void cnss_schedule_recovery_work(void)
{
schedule_work(&recovery_work);
}
EXPORT_SYMBOL(cnss_schedule_recovery_work);
void cnss_pci_events_cb(struct msm_pcie_notify *notify)
{
unsigned long flags;
if (notify == NULL)
return;
switch (notify->event) {
case MSM_PCIE_EVENT_LINKDOWN:
if (pcie_link_down_panic)
panic("PCIe link is down!\n");
spin_lock_irqsave(&pci_link_down_lock, flags);
if (penv->pcie_link_down_ind) {
pr_debug("PCI link down recovery is in progress, ignore!\n");
spin_unlock_irqrestore(&pci_link_down_lock, flags);
return;
}
penv->pcie_link_down_ind = true;
spin_unlock_irqrestore(&pci_link_down_lock, flags);
pr_err("PCI link down, schedule recovery\n");
schedule_work(&recovery_work);
break;
case MSM_PCIE_EVENT_WAKEUP:
if (penv->monitor_wake_intr &&
atomic_read(&penv->auto_suspended)) {
penv->monitor_wake_intr = false;
pm_request_resume(&penv->pdev->dev);
}
break;
default:
pr_err("cnss: invalid event from PCIe callback %d\n",
notify->event);
}
}
void cnss_wlan_pci_link_down(void)
{
unsigned long flags;
if (pcie_link_down_panic)
panic("PCIe link is down!\n");
spin_lock_irqsave(&pci_link_down_lock, flags);
if (penv->pcie_link_down_ind) {
pr_debug("PCI link down recovery is in progress, ignore!\n");
spin_unlock_irqrestore(&pci_link_down_lock, flags);
return;
}
penv->pcie_link_down_ind = true;
spin_unlock_irqrestore(&pci_link_down_lock, flags);
pr_err("PCI link down detected by host driver, schedule recovery!\n");
schedule_work(&recovery_work);
}
EXPORT_SYMBOL(cnss_wlan_pci_link_down);
int cnss_pcie_shadow_control(struct pci_dev *dev, bool enable)
{
return msm_pcie_shadow_control(dev, enable);
}
EXPORT_SYMBOL(cnss_pcie_shadow_control);
int cnss_get_codeswap_struct(struct codeswap_codeseg_info *swap_seg)
{
struct codeswap_codeseg_info *cnss_seg_info = penv->cnss_seg_info;
if (!cnss_seg_info) {
swap_seg = NULL;
return -ENOENT;
}
if (!penv->fw_available) {
pr_debug("%s: fw is not available\n", __func__);
return -ENOENT;
}
*swap_seg = *cnss_seg_info;
return 0;
}
EXPORT_SYMBOL(cnss_get_codeswap_struct);
static void cnss_wlan_memory_expansion(void)
{
struct device *dev;
const struct firmware *fw_entry;
const char *filename = FW_FILES_QCA6174_FW_3_0.evicted_data;
u_int32_t fw_entry_size, size_left, dma_size_left, length;
char *fw_temp;
char *fw_data;
char *dma_virt_addr;
struct codeswap_codeseg_info *cnss_seg_info;
u_int32_t total_length = 0;
struct pci_dev *pdev;
pdev = penv->pdev;
dev = &pdev->dev;
cnss_seg_info = penv->cnss_seg_info;
if (!cnss_seg_info) {
pr_debug("cnss: cnss_seg_info is NULL\n");
goto end;
}
if (penv->fw_available) {
pr_debug("cnss: fw code already copied to host memory\n");
goto end;
}
if (request_firmware(&fw_entry, filename, dev) != 0) {
pr_debug("cnss: failed to get fw: %s\n", filename);
goto end;
}
if (!fw_entry || !fw_entry->data) {
pr_err("%s: INVALID FW entries\n", __func__);
goto release_fw;
}
dma_virt_addr = (char *)penv->codeseg_cpuaddr[0];
fw_data = (u8 *) fw_entry->data;
fw_temp = fw_data;
fw_entry_size = fw_entry->size;
if (fw_entry_size > EVICT_BIN_MAX_SIZE)
fw_entry_size = EVICT_BIN_MAX_SIZE;
size_left = fw_entry_size;
dma_size_left = EVICT_BIN_MAX_SIZE;
while ((size_left && fw_temp) && (dma_size_left > 0)) {
fw_temp = fw_temp + 4;
size_left = size_left - 4;
length = *(int *)fw_temp;
if ((length > size_left || length <= 0) ||
(dma_size_left <= 0 || length > dma_size_left)) {
pr_err("cnss: wrong length read:%d\n",
length);
break;
}
fw_temp = fw_temp + 4;
size_left = size_left - 4;
memcpy(dma_virt_addr, fw_temp, length);
dma_size_left = dma_size_left - length;
size_left = size_left - length;
fw_temp = fw_temp + length;
dma_virt_addr = dma_virt_addr + length;
total_length += length;
pr_debug("cnss: bytes_left to copy: fw:%d; dma_page:%d\n",
size_left, dma_size_left);
}
pr_debug("cnss: total_bytes copied: %d\n", total_length);
cnss_seg_info->codeseg_total_bytes = total_length;
penv->fw_available = 1;
release_fw:
release_firmware(fw_entry);
end:
return;
}
int cnss_wlan_register_driver(struct cnss_wlan_driver *driver)
{
int ret = 0;
int probe_again = 0;
struct cnss_wlan_driver *wdrv;
struct cnss_wlan_vreg_info *vreg_info;
struct cnss_wlan_gpio_info *gpio_info;
struct pci_dev *pdev;
if (!penv)
return -ENODEV;
wdrv = penv->driver;
vreg_info = &penv->vreg_info;
gpio_info = &penv->gpio_info;
pdev = penv->pdev;
if (!wdrv) {
penv->driver = wdrv = driver;
} else {
pr_err("driver already registered\n");
return -EEXIST;
}
again:
ret = cnss_wlan_vreg_set(vreg_info, VREG_ON);
if (ret) {
pr_err("wlan vreg ON failed\n");
goto err_wlan_vreg_on;
}
msleep(POWER_ON_DELAY);
if (penv->wlan_bootstrap_gpio > 0) {
gpio_set_value(penv->wlan_bootstrap_gpio, WLAN_BOOTSTRAP_HIGH);
msleep(WLAN_BOOTSTRAP_DELAY);
}
cnss_wlan_gpio_set(gpio_info, WLAN_EN_HIGH);
msleep(WLAN_ENABLE_DELAY);
if (!pdev) {
pr_debug("%s: invalid pdev. register pci device\n", __func__);
ret = pci_register_driver(&cnss_wlan_pci_driver);
if (ret) {
pr_err("%s: pci registration failed\n", __func__);
goto err_pcie_reg;
}
pdev = penv->pdev;
if (!pdev) {
pr_err("%s: pdev is still invalid\n", __func__);
goto err_pcie_reg;
}
}
penv->event_reg.events = MSM_PCIE_EVENT_LINKDOWN |
MSM_PCIE_EVENT_WAKEUP;
penv->event_reg.user = pdev;
penv->event_reg.mode = MSM_PCIE_TRIGGER_CALLBACK;
penv->event_reg.callback = cnss_pci_events_cb;
penv->event_reg.options = MSM_PCIE_CONFIG_NO_RECOVERY;
ret = msm_pcie_register_event(&penv->event_reg);
if (ret)
pr_err("%s: PCIe event register failed! %d\n", __func__, ret);
if (!penv->pcie_link_state && !penv->pcie_link_down_ind) {
ret = msm_pcie_pm_control(MSM_PCIE_RESUME,
cnss_get_pci_dev_bus_number(pdev),
pdev, NULL, PM_OPTIONS);
if (ret) {
pr_err("PCIe link bring-up failed\n");
goto err_pcie_link_up;
}
penv->pcie_link_state = PCIE_LINK_UP;
} else if (!penv->pcie_link_state && penv->pcie_link_down_ind) {
ret = msm_pcie_pm_control(MSM_PCIE_RESUME,
cnss_get_pci_dev_bus_number(pdev),
pdev, NULL, PM_OPTIONS_RESUME_LINK_DOWN);
if (ret) {
pr_err("PCIe link bring-up failed (link down option)\n");
goto err_pcie_link_up;
}
penv->pcie_link_state = PCIE_LINK_UP;
ret = msm_pcie_recover_config(pdev);
if (ret) {
pr_err("cnss: PCI link failed to recover\n");
goto err_pcie_link_up;
}
penv->pcie_link_down_ind = false;
}
if (!cnss_wlan_is_codeswap_supported(penv->revision_id))
cnss_wlan_memory_expansion();
if (wdrv->probe) {
if (penv->saved_state)
pci_load_and_free_saved_state(pdev, &penv->saved_state);
pci_restore_state(pdev);
ret = wdrv->probe(pdev, penv->id);
if (ret) {
wcnss_prealloc_check_memory_leak();
wcnss_pre_alloc_reset();
if (probe_again > 3) {
pr_err("Failed to probe WLAN\n");
goto err_wlan_probe;
}
pci_save_state(pdev);
penv->saved_state = pci_store_saved_state(pdev);
msm_pcie_deregister_event(&penv->event_reg);
msm_pcie_pm_control(MSM_PCIE_SUSPEND,
cnss_get_pci_dev_bus_number(pdev),
pdev, NULL, PM_OPTIONS);
penv->pcie_link_state = PCIE_LINK_DOWN;
cnss_wlan_gpio_set(gpio_info, WLAN_EN_LOW);
msleep(WLAN_ENABLE_DELAY);
cnss_wlan_vreg_set(vreg_info, VREG_OFF);
msleep(POWER_ON_DELAY);
probe_again++;
goto again;
}
}
if (penv->notify_modem_status && wdrv->modem_status)
wdrv->modem_status(pdev, penv->modem_current_status);
return ret;
err_wlan_probe:
pci_save_state(pdev);
penv->saved_state = pci_store_saved_state(pdev);
err_pcie_link_up:
msm_pcie_deregister_event(&penv->event_reg);
if (penv->pcie_link_state) {
msm_pcie_pm_control(MSM_PCIE_SUSPEND,
cnss_get_pci_dev_bus_number(pdev),
pdev, NULL, PM_OPTIONS);
penv->pcie_link_state = PCIE_LINK_DOWN;
}
err_pcie_reg:
cnss_wlan_gpio_set(gpio_info, WLAN_EN_LOW);
cnss_wlan_vreg_set(vreg_info, VREG_OFF);
if (penv->pdev) {
pr_err("%d: Unregistering PCI device\n", __LINE__);
pci_unregister_driver(&cnss_wlan_pci_driver);
penv->pdev = NULL;
penv->pci_register_again = true;
}
err_wlan_vreg_on:
penv->driver = NULL;
return ret;
}
EXPORT_SYMBOL(cnss_wlan_register_driver);
void cnss_wlan_unregister_driver(struct cnss_wlan_driver *driver)
{
struct cnss_wlan_driver *wdrv;
struct cnss_wlan_vreg_info *vreg_info;
struct cnss_wlan_gpio_info *gpio_info;
struct pci_dev *pdev;
if (!penv)
return;
wdrv = penv->driver;
vreg_info = &penv->vreg_info;
gpio_info = &penv->gpio_info;
pdev = penv->pdev;
if (!wdrv) {
pr_err("driver not registered\n");
return;
}
if (penv->bus_client)
msm_bus_scale_client_update_request(penv->bus_client,
CNSS_BUS_WIDTH_NONE);
if (!pdev) {
pr_err("%d: invalid pdev\n", __LINE__);
goto cut_power;
}
if (wdrv->remove)
wdrv->remove(pdev);
wcnss_prealloc_check_memory_leak();
wcnss_pre_alloc_reset();
msm_pcie_deregister_event(&penv->event_reg);
if (penv->pcie_link_state && !penv->pcie_link_down_ind) {
pci_save_state(pdev);
penv->saved_state = pci_store_saved_state(pdev);
if (msm_pcie_pm_control(MSM_PCIE_SUSPEND,
cnss_get_pci_dev_bus_number(pdev),
pdev, NULL, PM_OPTIONS)) {
pr_err("Failed to shutdown PCIe link\n");
return;
}
} else if (penv->pcie_link_state && penv->pcie_link_down_ind) {
penv->saved_state = NULL;
if (msm_pcie_pm_control(MSM_PCIE_SUSPEND,
cnss_get_pci_dev_bus_number(pdev),
pdev, NULL, PM_OPTIONS_SUSPEND_LINK_DOWN)) {
pr_err("Failed to shutdown PCIe link (with linkdown option)\n");
return;
}
}
penv->pcie_link_state = PCIE_LINK_DOWN;
penv->driver_status = CNSS_UNINITIALIZED;
penv->monitor_wake_intr = false;
atomic_set(&penv->auto_suspended, 0);
cut_power:
penv->driver = NULL;
cnss_wlan_gpio_set(gpio_info, WLAN_EN_LOW);
if (cnss_wlan_vreg_set(vreg_info, VREG_OFF))
pr_err("wlan vreg OFF failed\n");
}
EXPORT_SYMBOL(cnss_wlan_unregister_driver);
int cnss_set_wlan_unsafe_channel(u16 *unsafe_ch_list, u16 ch_count)
{
if (!penv)
return -ENODEV;
if ((!unsafe_ch_list) || (ch_count > CNSS_MAX_CH_NUM))
return -EINVAL;
penv->unsafe_ch_count = ch_count;
if (ch_count != 0)
memcpy((char *)penv->unsafe_ch_list, (char *)unsafe_ch_list,
ch_count * sizeof(u16));
return 0;
}
EXPORT_SYMBOL(cnss_set_wlan_unsafe_channel);
int cnss_get_wlan_unsafe_channel(u16 *unsafe_ch_list,
u16 *ch_count, u16 buf_len)
{
if (!penv)
return -ENODEV;
if (!unsafe_ch_list || !ch_count)
return -EINVAL;
if (buf_len < (penv->unsafe_ch_count * sizeof(u16)))
return -ENOMEM;
*ch_count = penv->unsafe_ch_count;
memcpy((char *)unsafe_ch_list, (char *)penv->unsafe_ch_list,
penv->unsafe_ch_count * sizeof(u16));
return 0;
}
EXPORT_SYMBOL(cnss_get_wlan_unsafe_channel);
int cnss_wlan_set_dfs_nol(const void *info, u16 info_len)
{
void *temp;
if (!penv)
return -ENODEV;
if (!info || !info_len)
return -EINVAL;
temp = kmalloc(info_len, GFP_KERNEL);
if (!temp)
return -ENOMEM;
memcpy(temp, info, info_len);
kfree(penv->dfs_nol_info);
penv->dfs_nol_info = temp;
penv->dfs_nol_info_len = info_len;
return 0;
}
EXPORT_SYMBOL(cnss_wlan_set_dfs_nol);
int cnss_wlan_get_dfs_nol(void *info, u16 info_len)
{
int len;
if (!penv)
return -ENODEV;
if (!info || !info_len)
return -EINVAL;
if (penv->dfs_nol_info == NULL || penv->dfs_nol_info_len == 0)
return -ENOENT;
len = min(info_len, penv->dfs_nol_info_len);
memcpy(info, penv->dfs_nol_info, len);
return len;
}
EXPORT_SYMBOL(cnss_wlan_get_dfs_nol);
#ifdef CONFIG_PCI_MSM
int cnss_wlan_pm_control(bool vote)
{
if (!penv || !penv->pdev)
return -ENODEV;
return msm_pcie_pm_control(
vote ? MSM_PCIE_DISABLE_PC : MSM_PCIE_ENABLE_PC,
cnss_get_pci_dev_bus_number(penv->pdev),
penv->pdev, NULL, PM_OPTIONS);
}
EXPORT_SYMBOL(cnss_wlan_pm_control);
#endif
void cnss_lock_pm_sem(void)
{
down_read(&cnss_pm_sem);
}
EXPORT_SYMBOL(cnss_lock_pm_sem);
void cnss_release_pm_sem(void)
{
up_read(&cnss_pm_sem);
}
EXPORT_SYMBOL(cnss_release_pm_sem);
int cnss_get_ramdump_mem(unsigned long *address, unsigned long *size)
{
if (!penv || !penv->pldev)
return -ENODEV;
*address = penv->ramdump_phys;
*size = penv->ramdump_size;
return 0;
}
EXPORT_SYMBOL(cnss_get_ramdump_mem);
void *cnss_get_virt_ramdump_mem(unsigned long *size)
{
if (!penv || !penv->pldev)
return NULL;
*size = penv->ramdump_size;
return penv->ramdump_addr;
}
EXPORT_SYMBOL(cnss_get_virt_ramdump_mem);
void cnss_device_crashed(void)
{
if (penv && penv->subsys) {
subsys_set_crash_status(penv->subsys, true);
subsystem_restart_dev(penv->subsys);
}
}
EXPORT_SYMBOL(cnss_device_crashed);
static int cnss_shutdown(const struct subsys_desc *subsys, bool force_stop)
{
struct cnss_wlan_driver *wdrv;
struct pci_dev *pdev;
struct cnss_wlan_vreg_info *vreg_info;
struct cnss_wlan_gpio_info *gpio_info;
int ret = 0;
if (!penv)
return -ENODEV;
penv->recovery_in_progress = true;
wdrv = penv->driver;
pdev = penv->pdev;
vreg_info = &penv->vreg_info;
gpio_info = &penv->gpio_info;
if (!pdev) {
ret = -EINVAL;
goto cut_power;
}
if (wdrv && wdrv->shutdown)
wdrv->shutdown(pdev);
if (penv->pcie_link_state) {
if (msm_pcie_pm_control(MSM_PCIE_SUSPEND,
cnss_get_pci_dev_bus_number(pdev),
pdev, NULL, PM_OPTIONS_SUSPEND_LINK_DOWN)) {
pr_debug("cnss: Failed to shutdown PCIe link!\n");
ret = -EFAULT;
}
penv->saved_state = NULL;
penv->pcie_link_state = PCIE_LINK_DOWN;
}
cut_power:
cnss_wlan_gpio_set(gpio_info, WLAN_EN_LOW);
if (cnss_wlan_vreg_set(vreg_info, VREG_OFF))
pr_err("cnss: Failed to set WLAN VREG_OFF!\n");
return ret;
}
static int cnss_powerup(const struct subsys_desc *subsys)
{
struct cnss_wlan_driver *wdrv;
struct pci_dev *pdev;
struct cnss_wlan_vreg_info *vreg_info;
struct cnss_wlan_gpio_info *gpio_info;
int ret = 0;
if (!penv)
return -ENODEV;
if (!penv->driver)
goto out;
wdrv = penv->driver;
pdev = penv->pdev;
vreg_info = &penv->vreg_info;
gpio_info = &penv->gpio_info;
ret = cnss_wlan_vreg_set(vreg_info, VREG_ON);
if (ret) {
pr_err("cnss: Failed to set WLAN VREG_ON!\n");
goto err_wlan_vreg_on;
}
msleep(POWER_ON_DELAY);
cnss_wlan_gpio_set(gpio_info, WLAN_EN_HIGH);
msleep(WLAN_ENABLE_DELAY);
if (!pdev) {
pr_err("%d: invalid pdev\n", __LINE__);
goto err_pcie_link_up;
}
if (!penv->pcie_link_state) {
ret = msm_pcie_pm_control(MSM_PCIE_RESUME,
cnss_get_pci_dev_bus_number(pdev),
pdev, NULL, PM_OPTIONS_RESUME_LINK_DOWN);
if (ret) {
pr_err("cnss: Failed to bring-up PCIe link!\n");
goto err_pcie_link_up;
}
penv->pcie_link_state = PCIE_LINK_UP;
ret = msm_pcie_recover_config(penv->pdev);
if (ret) {
pr_err("cnss: PCI link failed to recover\n");
goto err_pcie_link_up;
}
penv->pcie_link_down_ind = false;
}
if (wdrv && wdrv->reinit) {
if (penv->saved_state)
pci_load_and_free_saved_state(pdev,
&penv->saved_state);
pci_restore_state(pdev);
ret = wdrv->reinit(pdev, penv->id);
if (ret) {
pr_err("%d: Failed to do reinit\n", __LINE__);
goto err_wlan_reinit;
}
} else {
pr_err("%d: wdrv->reinit is invalid\n", __LINE__);
goto err_pcie_link_up;
}
if (penv->notify_modem_status && wdrv->modem_status)
wdrv->modem_status(pdev, penv->modem_current_status);
out:
penv->recovery_in_progress = false;
return ret;
err_wlan_reinit:
pci_save_state(pdev);
penv->saved_state = pci_store_saved_state(pdev);
msm_pcie_pm_control(MSM_PCIE_SUSPEND,
cnss_get_pci_dev_bus_number(pdev),
pdev, NULL, PM_OPTIONS);
penv->pcie_link_state = PCIE_LINK_DOWN;
err_pcie_link_up:
cnss_wlan_gpio_set(gpio_info, WLAN_EN_LOW);
cnss_wlan_vreg_set(vreg_info, VREG_OFF);
if (penv->pdev) {
pr_err("%d: Unregistering pci device\n", __LINE__);
pci_unregister_driver(&cnss_wlan_pci_driver);
penv->pdev = NULL;
penv->pci_register_again = true;
}
err_wlan_vreg_on:
return ret;
}
static int cnss_ramdump(int enable, const struct subsys_desc *subsys)
{
struct ramdump_segment segment;
if (!penv)
return -ENODEV;
if (!penv->ramdump_size)
return -ENOENT;
if (!enable)
return 0;
memset(&segment, 0, sizeof(segment));
segment.v_address = penv->ramdump_addr;
segment.size = penv->ramdump_size;
return do_ramdump(penv->ramdump_dev, &segment, 1);
}
static void cnss_crash_shutdown(const struct subsys_desc *subsys)
{
struct cnss_wlan_driver *wdrv;
struct pci_dev *pdev;
if (!penv)
return;
wdrv = penv->driver;
pdev = penv->pdev;
penv->dump_data.version = CNSS_DUMP_FORMAT_VER;
strlcpy(penv->dump_data.name, CNSS_DUMP_NAME,
sizeof(penv->dump_data.name));
if (pdev && wdrv && wdrv->crash_shutdown)
wdrv->crash_shutdown(pdev);
penv->dump_data.magic = CNSS_DUMP_MAGIC_VER_V2;
}
void cnss_device_self_recovery(void)
{
if (!penv)
return;
if (penv->recovery_in_progress) {
pr_err("cnss: Recovery already in progress\n");
return;
}
if (penv->driver_status == CNSS_LOAD_UNLOAD) {
pr_err("cnss: load unload in progress\n");
return;
}
penv->recovery_count++;
penv->recovery_in_progress = true;
cnss_pm_wake_lock(&penv->ws);
cnss_shutdown(NULL, false);
msleep(WLAN_RECOVERY_DELAY);
cnss_powerup(NULL);
cnss_pm_wake_lock_release(&penv->ws);
penv->recovery_in_progress = false;
}
EXPORT_SYMBOL(cnss_device_self_recovery);
static int cnss_modem_notifier_nb(struct notifier_block *this,
unsigned long code,
void *ss_handle)
{
struct cnss_wlan_driver *wdrv;
struct pci_dev *pdev;
pr_debug("%s: Modem-Notify: event %lu\n", __func__, code);
if (!penv)
return NOTIFY_DONE;
if (SUBSYS_AFTER_POWERUP == code)
penv->modem_current_status = 1;
else if (SUBSYS_BEFORE_SHUTDOWN == code)
penv->modem_current_status = 0;
else
return NOTIFY_DONE;
wdrv = penv->driver;
pdev = penv->pdev;
if (!wdrv || !pdev || !wdrv->modem_status)
return NOTIFY_DONE;
wdrv->modem_status(pdev, penv->modem_current_status);
return NOTIFY_OK;
}
static struct notifier_block mnb = {
.notifier_call = cnss_modem_notifier_nb,
};
static int cnss_probe(struct platform_device *pdev)
{
int ret = 0;
struct esoc_desc *desc;
const char *client_desc;
struct device *dev = &pdev->dev;
u32 rc_num;
struct msm_dump_entry dump_entry;
struct resource *res;
u32 ramdump_size = 0;
u32 smmu_iova_address[2];
if (penv)
return -ENODEV;
penv = devm_kzalloc(&pdev->dev, sizeof(*penv), GFP_KERNEL);
if (!penv)
return -ENOMEM;
penv->pldev = pdev;
penv->esoc_desc = NULL;
penv->gpio_info.name = WLAN_EN_GPIO_NAME;
penv->gpio_info.num = 0;
penv->gpio_info.state = WLAN_EN_LOW;
penv->gpio_info.init = WLAN_EN_LOW;
penv->gpio_info.prop = false;
penv->vreg_info.wlan_reg = NULL;
penv->vreg_info.state = VREG_OFF;
penv->pci_register_again = false;
ret = cnss_wlan_get_resources(pdev);
if (ret)
goto err_get_wlan_res;
cnss_wlan_gpio_set(&penv->gpio_info, WLAN_EN_HIGH);
msleep(WLAN_ENABLE_DELAY);
ret = of_property_read_u32(dev->of_node, "qcom,wlan-rc-num", &rc_num);
if (ret) {
pr_err("%s: Failed to find PCIe RC number!\n", __func__);
goto err_get_rc;
}
ret = msm_pcie_enumerate(rc_num);
if (ret) {
pr_err("%s: Failed to enable PCIe RC%x!\n", __func__, rc_num);
goto err_pcie_enumerate;
}
penv->pcie_link_state = PCIE_LINK_UP;
penv->notify_modem_status =
of_property_read_bool(dev->of_node,
"qcom,notify-modem-status");
if (penv->notify_modem_status) {
ret = of_property_read_string_index(dev->of_node, "esoc-names",
0, &client_desc);
if (ret) {
pr_debug("%s: esoc-names is not defined in DT, SKIP\n",
__func__);
} else {
desc = devm_register_esoc_client(dev, client_desc);
if (IS_ERR_OR_NULL(desc)) {
ret = PTR_RET(desc);
pr_err("%s: can't find esoc desc\n", __func__);
goto err_esoc_reg;
}
penv->esoc_desc = desc;
}
}
penv->subsysdesc.name = "AR6320";
penv->subsysdesc.owner = THIS_MODULE;
penv->subsysdesc.shutdown = cnss_shutdown;
penv->subsysdesc.powerup = cnss_powerup;
penv->subsysdesc.ramdump = cnss_ramdump;
penv->subsysdesc.crash_shutdown = cnss_crash_shutdown;
penv->subsysdesc.dev = &pdev->dev;
penv->subsys = subsys_register(&penv->subsysdesc);
if (IS_ERR(penv->subsys)) {
ret = PTR_ERR(penv->subsys);
goto err_subsys_reg;
}
penv->subsys_handle = subsystem_get(penv->subsysdesc.name);
if (of_property_read_u32(dev->of_node, "qcom,wlan-ramdump-dynamic",
&ramdump_size) == 0) {
penv->ramdump_addr = dma_alloc_coherent(&pdev->dev,
ramdump_size, &penv->ramdump_phys, GFP_KERNEL);
if (penv->ramdump_addr)
penv->ramdump_size = ramdump_size;
penv->ramdump_dynamic = true;
} else {
res = platform_get_resource_byname(penv->pldev,
IORESOURCE_MEM, "ramdump");
if (res) {
penv->ramdump_phys = res->start;
ramdump_size = resource_size(res);
penv->ramdump_addr = ioremap(penv->ramdump_phys,
ramdump_size);
if (penv->ramdump_addr)
penv->ramdump_size = ramdump_size;
penv->ramdump_dynamic = false;
}
}
pr_debug("%s: ramdump addr: %p, phys: %pa\n", __func__,
penv->ramdump_addr, &penv->ramdump_phys);
if (penv->ramdump_size == 0) {
pr_info("%s: CNSS ramdump will not be collected", __func__);
goto skip_ramdump;
}
if (penv->ramdump_dynamic) {
penv->dump_data.addr = penv->ramdump_phys;
penv->dump_data.len = penv->ramdump_size;
dump_entry.id = MSM_DUMP_DATA_CNSS_WLAN;
dump_entry.addr = virt_to_phys(&penv->dump_data);
ret = msm_dump_data_register(MSM_DUMP_TABLE_APPS, &dump_entry);
if (ret) {
pr_err("%s: Dump table setup failed: %d\n",
__func__, ret);
goto err_ramdump_create;
}
}
penv->ramdump_dev = create_ramdump_device(penv->subsysdesc.name,
penv->subsysdesc.dev);
if (!penv->ramdump_dev) {
ret = -ENOMEM;
goto err_ramdump_create;
}
skip_ramdump:
penv->modem_current_status = 0;
if (penv->notify_modem_status) {
penv->modem_notify_handler =
subsys_notif_register_notifier(penv->esoc_desc ?
penv->esoc_desc->name :
"modem", &mnb);
if (IS_ERR(penv->modem_notify_handler)) {
ret = PTR_ERR(penv->modem_notify_handler);
pr_err("%s: Register notifier Failed\n", __func__);
goto err_notif_modem;
}
}
if (of_property_read_u32_array(dev->of_node,
"qcom,wlan-smmu-iova-address",
smmu_iova_address, 2) == 0) {
penv->smmu_iova_start = smmu_iova_address[0];
penv->smmu_iova_len = smmu_iova_address[1];
}
ret = pci_register_driver(&cnss_wlan_pci_driver);
if (ret)
goto err_pci_reg;
penv->bus_scale_table = 0;
penv->bus_scale_table = msm_bus_cl_get_pdata(pdev);
if (penv->bus_scale_table) {
penv->bus_client =
msm_bus_scale_register_client(penv->bus_scale_table);
if (!penv->bus_client) {
pr_err("Failed to register with bus_scale client\n");
goto err_bus_reg;
}
}
cnss_pm_wake_lock_init(&penv->ws, "cnss_wlock");
register_pm_notifier(&cnss_pm_notifier);
#ifdef CONFIG_CNSS_MAC_BUG
/* 0-4K memory is reserved for QCA6174 to address a MAC HW bug.
* MAC would do an invalid pointer fetch based on the data
* that was read from 0 to 4K. So fill it with zero's (to an
* address for which PCIe RC honored the read without any errors).
*/
memset(phys_to_virt(0), 0, SZ_4K);
#endif
ret = device_create_file(dev, &dev_attr_fw_image_setup);
if (ret) {
pr_err("cnss: fw_image_setup sys file creation failed\n");
goto err_bus_reg;
}
pr_info("cnss: Platform driver probed successfully.\n");
return ret;
err_bus_reg:
if (penv->bus_scale_table)
msm_bus_cl_clear_pdata(penv->bus_scale_table);
pci_unregister_driver(&cnss_wlan_pci_driver);
err_pci_reg:
if (penv->notify_modem_status)
subsys_notif_unregister_notifier
(penv->modem_notify_handler, &mnb);
err_notif_modem:
if (penv->ramdump_dev)
destroy_ramdump_device(penv->ramdump_dev);
err_ramdump_create:
if (penv->ramdump_addr) {
if (penv->ramdump_dynamic) {
dma_free_coherent(&pdev->dev, penv->ramdump_size,
penv->ramdump_addr, penv->ramdump_phys);
} else {
iounmap(penv->ramdump_addr);
}
}
if (penv->subsys_handle)
subsystem_put(penv->subsys_handle);
subsys_unregister(penv->subsys);
err_subsys_reg:
if (penv->esoc_desc)
devm_unregister_esoc_client(&pdev->dev, penv->esoc_desc);
err_esoc_reg:
err_pcie_enumerate:
err_get_rc:
cnss_wlan_gpio_set(&penv->gpio_info, WLAN_EN_LOW);
cnss_wlan_release_resources();
err_get_wlan_res:
penv = NULL;
return ret;
}
static int cnss_remove(struct platform_device *pdev)
{
struct cnss_wlan_gpio_info *gpio_info = &penv->gpio_info;
unregister_pm_notifier(&cnss_pm_notifier);
device_remove_file(&pdev->dev, &dev_attr_fw_image_setup);
cnss_pm_wake_lock_destroy(&penv->ws);
kfree(penv->dfs_nol_info);
if (penv->bus_client)
msm_bus_scale_unregister_client(penv->bus_client);
if (penv->bus_scale_table)
msm_bus_cl_clear_pdata(penv->bus_scale_table);
if (penv->ramdump_addr) {
if (penv->ramdump_dynamic) {
dma_free_coherent(&pdev->dev, penv->ramdump_size,
penv->ramdump_addr, penv->ramdump_phys);
} else {
iounmap(penv->ramdump_addr);
}
}
cnss_wlan_gpio_set(gpio_info, WLAN_EN_LOW);
if (penv->wlan_bootstrap_gpio > 0)
gpio_set_value(penv->wlan_bootstrap_gpio, WLAN_BOOTSTRAP_LOW);
cnss_wlan_release_resources();
return 0;
}
static const struct of_device_id cnss_dt_match[] = {
{.compatible = "qcom,cnss"},
{}
};
MODULE_DEVICE_TABLE(of, cnss_dt_match);
static struct platform_driver cnss_driver = {
.probe = cnss_probe,
.remove = cnss_remove,
.driver = {
.name = "cnss",
.owner = THIS_MODULE,
.of_match_table = cnss_dt_match,
},
};
static int __init cnss_initialize(void)
{
return platform_driver_register(&cnss_driver);
}
static void __exit cnss_exit(void)
{
struct platform_device *pdev = penv->pldev;
if (penv->ramdump_dev)
destroy_ramdump_device(penv->ramdump_dev);
if (penv->notify_modem_status)
subsys_notif_unregister_notifier(penv->modem_notify_handler,
&mnb);
subsys_unregister(penv->subsys);
if (penv->esoc_desc)
devm_unregister_esoc_client(&pdev->dev, penv->esoc_desc);
platform_driver_unregister(&cnss_driver);
}
void cnss_request_pm_qos(u32 qos_val)
{
if (!penv) {
pr_err("%s: penv is NULL!\n", __func__);
return;
}
pm_qos_add_request(&penv->qos_request, PM_QOS_CPU_DMA_LATENCY, qos_val);
}
EXPORT_SYMBOL(cnss_request_pm_qos);
void cnss_remove_pm_qos(void)
{
if (!penv) {
pr_err("%s: penv is NULL!\n", __func__);
return;
}
pm_qos_remove_request(&penv->qos_request);
}
EXPORT_SYMBOL(cnss_remove_pm_qos);
int cnss_request_bus_bandwidth(int bandwidth)
{
int ret = 0;
if (!penv)
return -ENODEV;
if (!penv->bus_client)
return -ENOSYS;
switch (bandwidth) {
case CNSS_BUS_WIDTH_NONE:
case CNSS_BUS_WIDTH_LOW:
case CNSS_BUS_WIDTH_MEDIUM:
case CNSS_BUS_WIDTH_HIGH:
ret = msm_bus_scale_client_update_request(penv->bus_client,
bandwidth);
if (!ret) {
penv->current_bandwidth_vote = bandwidth;
} else {
pr_err("%s: could not set bus bandwidth %d, ret = %d\n",
__func__, bandwidth, ret);
}
break;
default:
pr_err("%s: Invalid request %d", __func__, bandwidth);
ret = -EINVAL;
}
return ret;
}
EXPORT_SYMBOL(cnss_request_bus_bandwidth);
int cnss_get_platform_cap(struct cnss_platform_cap *cap)
{
if (!penv)
return -ENODEV;
if (cap)
*cap = penv->cap;
return 0;
}
EXPORT_SYMBOL(cnss_get_platform_cap);
void cnss_set_driver_status(enum cnss_driver_status driver_status)
{
penv->driver_status = driver_status;
}
EXPORT_SYMBOL(cnss_set_driver_status);
int cnss_get_bmi_setup(void)
{
if (!penv)
return -ENODEV;
return penv->bmi_test;
}
EXPORT_SYMBOL(cnss_get_bmi_setup);
#ifdef CONFIG_CNSS_SECURE_FW
int cnss_get_sha_hash(const u8 *data, u32 data_len, u8 *hash_idx, u8 *out)
{
struct scatterlist sg;
struct hash_desc desc;
int ret = 0;
if (!out) {
pr_err("memory for output buffer is not allocated\n");
ret = -EINVAL;
goto end;
}
desc.flags = CRYPTO_TFM_REQ_MAY_SLEEP;
desc.tfm = crypto_alloc_hash(hash_idx, 0, CRYPTO_ALG_ASYNC);
if (IS_ERR(desc.tfm)) {
pr_err("crypto_alloc_hash failed:%ld\n", PTR_ERR(desc.tfm));
ret = PTR_ERR(desc.tfm);
goto end;
}
sg_init_one(&sg, data, data_len);
ret = crypto_hash_digest(&desc, &sg, sg.length, out);
crypto_free_hash(desc.tfm);
end:
return ret;
}
EXPORT_SYMBOL(cnss_get_sha_hash);
void *cnss_get_fw_ptr(void)
{
if (!penv)
return NULL;
return penv->fw_mem;
}
EXPORT_SYMBOL(cnss_get_fw_ptr);
#endif
int cnss_auto_suspend(void)
{
int ret = 0;
struct pci_dev *pdev;
if (!penv || !penv->driver)
return -ENODEV;
pdev = penv->pdev;
if (penv->pcie_link_state) {
pci_save_state(pdev);
penv->saved_state = pci_store_saved_state(pdev);
pci_disable_device(pdev);
ret = pci_set_power_state(pdev, PCI_D3hot);
if (ret)
pr_err("%s: Set D3Hot failed: %d\n", __func__, ret);
if (msm_pcie_pm_control(MSM_PCIE_SUSPEND,
cnss_get_pci_dev_bus_number(pdev),
pdev, NULL, PM_OPTIONS)) {
pr_err("%s: Failed to shutdown PCIe link\n", __func__);
ret = -EAGAIN;
goto out;
}
}
atomic_set(&penv->auto_suspended, 1);
penv->monitor_wake_intr = true;
penv->pcie_link_state = PCIE_LINK_DOWN;
msm_bus_scale_client_update_request(penv->bus_client,
CNSS_BUS_WIDTH_NONE);
out:
return ret;
}
EXPORT_SYMBOL(cnss_auto_suspend);
int cnss_auto_resume(void)
{
int ret = 0;
struct pci_dev *pdev;
if (!penv || !penv->driver)
return -ENODEV;
pdev = penv->pdev;
if (!penv->pcie_link_state) {
if (msm_pcie_pm_control(MSM_PCIE_RESUME,
cnss_get_pci_dev_bus_number(pdev),
pdev, NULL, PM_OPTIONS)) {
pr_err("%s: Failed to resume PCIe link\n", __func__);
ret = -EAGAIN;
goto out;
}
ret = pci_enable_device(pdev);
if (ret)
pr_err("%s: enable device failed: %d\n", __func__, ret);
penv->pcie_link_state = PCIE_LINK_UP;
}
if (penv->saved_state)
pci_load_and_free_saved_state(pdev, &penv->saved_state);
pci_restore_state(pdev);
pci_set_master(pdev);
atomic_set(&penv->auto_suspended, 0);
msm_bus_scale_client_update_request(penv->bus_client,
penv->current_bandwidth_vote);
out:
return ret;
}
EXPORT_SYMBOL(cnss_auto_resume);
int cnss_pm_runtime_request(struct device *dev,
enum cnss_runtime_request request)
{
int ret = 0;
switch (request) {
case CNSS_PM_RUNTIME_GET:
ret = pm_runtime_get(dev);
break;
case CNSS_PM_RUNTIME_PUT:
ret = pm_runtime_put(dev);
break;
case CNSS_PM_RUNTIME_MARK_LAST_BUSY:
pm_runtime_mark_last_busy(dev);
break;
case CNSS_PM_RUNTIME_RESUME:
ret = pm_runtime_resume(dev);
break;
case CNSS_PM_RUNTIME_PUT_AUTO:
ret = pm_runtime_put_autosuspend(dev);
break;
case CNSS_PM_RUNTIME_PUT_NOIDLE:
pm_runtime_put_noidle(dev);
break;
case CNSS_PM_REQUEST_RESUME:
ret = pm_request_resume(dev);
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
EXPORT_SYMBOL(cnss_pm_runtime_request);
void cnss_runtime_init(struct device *dev, int auto_delay)
{
pm_runtime_set_autosuspend_delay(dev, auto_delay);
pm_runtime_use_autosuspend(dev);
pm_runtime_allow(dev);
pm_runtime_mark_last_busy(dev);
pm_runtime_put_noidle(dev);
pm_suspend_ignore_children(dev, true);
}
EXPORT_SYMBOL(cnss_runtime_init);
void cnss_runtime_exit(struct device *dev)
{
pm_runtime_get_noresume(dev);
pm_runtime_set_active(dev);
}
EXPORT_SYMBOL(cnss_runtime_exit);
module_init(cnss_initialize);
module_exit(cnss_exit);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION(DEVICE "CNSS Driver");
Reference in New Issue Copy Permalink