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LeafOS / LeafOS-Devices / android_kernel_samsung_gta4xl / 08f1c88954261360f20f1ea450f5d23460fcb8f6 / . / drivers / net / wireless / scsc / hip4.c
blob: 586af661ef80cd19fccc46c9ffc2282027c95201 [file] [log] [blame]
/******************************************************************************
*
* Copyright (c) 2014 - 2020 Samsung Electronics Co., Ltd. All rights reserved
*
*****************************************************************************/
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/workqueue.h>
#include <scsc/scsc_mx.h>
#include <scsc/scsc_mifram.h>
#include <linux/ktime.h>
#include <linux/kthread.h>
#include <scsc/scsc_logring.h>
#ifdef CONFIG_SCSC_WLAN_RX_NAPI
#include <linux/cpu.h>
#include <linux/bitmap.h>
#endif
#include "hip4.h"
#include "mbulk.h"
#include "dev.h"
#include "hip4_sampler.h"
#ifdef CONFIG_SCSC_WLAN_ANDROID
#include "scsc_wifilogger_rings.h"
#endif
#include "debug.h"
/* Global spinlock to serialize napi context with hip4_deinit*/
static DEFINE_SPINLOCK(in_napi_context);
#ifndef CONFIG_SCSC_WLAN_RX_NAPI
static bool hip4_rx_flowcontrol;
#endif
static bool hip4_system_wq;
module_param(hip4_system_wq, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(hip4_system_wq, "Use system wq instead of named workqueue. (default: N)");
#if IS_ENABLED(CONFIG_SCSC_LOGRING)
static bool hip4_dynamic_logging = true;
module_param(hip4_dynamic_logging, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(hip4_dynamic_logging, "Dynamic logging, logring is disabled if tput > hip4_qos_med_tput_in_mbps. (default: Y)");
static int hip4_dynamic_logging_tput_in_mbps = 150;
module_param(hip4_dynamic_logging_tput_in_mbps, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(hip4_dynamic_logging_tput_in_mbps, "throughput (in Mbps) to apply dynamic logring logging");
#endif
#ifdef CONFIG_SCSC_QOS
static bool hip4_qos_enable = true;
module_param(hip4_qos_enable, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(hip4_qos_enable, "enable HIP4 PM QoS. (default: Y)");
static int hip4_qos_max_tput_in_mbps = 250;
module_param(hip4_qos_max_tput_in_mbps, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(hip4_qos_max_tput_in_mbps, "throughput (in Mbps) to apply Max PM QoS");
static int hip4_qos_med_tput_in_mbps = 150;
module_param(hip4_qos_med_tput_in_mbps, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(hip4_qos_med_tput_in_mbps, "throughput (in Mbps) to apply Median PM QoS");
#endif
#ifdef CONFIG_SCSC_SMAPPER
static bool hip4_smapper_enable = true;
module_param(hip4_smapper_enable, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(hip4_smapper_enable, "enable HIP4 SMAPPER. (default: Y)");
static bool hip4_smapper_is_enabled;
#endif
#ifdef CONFIG_SCSC_WLAN_RX_NAPI
#define SLSI_HIP_NAPI_STATE_ENABLED (0x1)
/* run NAPI poll on a specific CPU (preferably a big CPU if online) */
#ifdef CONFIG_SOC_EXYNOS7885
int napi_select_cpu = 7; /* Big CPU number */
#else
static int napi_select_cpu; /* CPU number */
#endif
module_param(napi_select_cpu, int, 0644);
MODULE_PARM_DESC(napi_select_cpu, "select a specific CPU to execute NAPI poll");
static uint hip4_napi_num_rx_pkts = 80;
module_param(hip4_napi_num_rx_pkts, uint, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(hip4_napi_num_rx_pkts, "number of packets in Rx queue to deem it as full");
static uint hip4_napi_num_rx_full = 3;
module_param(hip4_napi_num_rx_full, uint, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(hip4_napi_num_rx_full, "number of iterations of Rx queue full that signal to move to high performance");
#endif
static int max_buffered_frames = 10000;
module_param(max_buffered_frames, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(max_buffered_frames, "Maximum number of frames to buffer in the driver");
#ifdef CONFIG_SCSC_WLAN_RX_NAPI
static ktime_t intr_received_fb;
static ktime_t bh_init_fb;
static ktime_t bh_end_fb;
static ktime_t intr_received_ctrl;
static ktime_t bh_init_ctrl;
static ktime_t bh_end_ctrl;
static ktime_t intr_received_data;
static ktime_t bh_init_data;
static ktime_t bh_end_data;
#else
static ktime_t intr_received;
static ktime_t bh_init;
static ktime_t bh_end;
#endif
static ktime_t wdt;
static ktime_t send;
static ktime_t closing;
enum rw {
widx,
ridx,
};
static u8 hip4_read_index(struct slsi_hip4 *hip, u32 q, enum rw r_w);
/* Q mapping V3 - V4 */
/*offset of F/W owned indices */
#define FW_OWN_OFS (64)
/**
* HIP queue indices layout in the scoreboard (SC-505612-DD). v3
*
* 3 2 1 0
* +-----------------------------------+
* +0 | Q3R | Q2R | Q1W | Q0W | Owned by the host
* +-----------------------------------+
* +4 | | | Q5W | Q4R | Owned by the host
* +-----------------------------------+
*
* +-----------------------------------+
* +64 | Q3W | Q2W | Q1R | Q0R | Owned by the F/W
* +-----------------------------------+
* +68 | | | Q5R | Q4W | Owned by the F/W
* +-----------------------------------+
*
* The queue indcies which owned by the host are only writable by the host.
* F/W can only read them. And vice versa.
*/
static int q_idx_layout[6][2] = {
{ 0, FW_OWN_OFS + 0}, /* mif_q_fh_ctl : 0 */
{ 1, FW_OWN_OFS + 1}, /* mif_q_fh_dat : 1 */
{ FW_OWN_OFS + 2, 2}, /* mif_q_fh_rfb : 2 */
{ FW_OWN_OFS + 3, 3}, /* mif_q_th_ctl : 3 */
{ FW_OWN_OFS + 4, 4}, /* mif_q_th_dat : 4 */
{ 5, FW_OWN_OFS + 5} /* mif_q_th_rfb : 5 */
};
/*offset of F/W owned VIF Status */
#define FW_OWN_VIF (96)
/**
* HIP Pause state VIF. v4. 2 bits per PEER
*
* +-----------------------------------+
* +96 | VIF[0] Peers [15-1] | Owned by the F/W
* +-----------------------------------+
* +100 | VIF[0] Peers [31-16] | Owned by the F/W
* +-----------------------------------+
* +104 | VIF[1] Peers [15-1] | Owned by the F/W
* +-----------------------------------+
* +108 | VIF[1] Peers [31-16] | Owned by the F/W
* +-----------------------------------+
* +112 | VIF[2] Peers [15-1] | Owned by the F/W
* +-----------------------------------+
* +116 | VIF[2] Peers [31-16] | Owned by the F/W
* +-----------------------------------+
* +120 | VIF[3] Peers [15-1] | Owned by the F/W
* +-----------------------------------+
* +124 | VIF[3] Peers [31-16] | Owned by the F/W
* +-----------------------------------+
*
*/
/* MAX_STORM. Max Interrupts allowed when platform is in suspend */
#define MAX_STORM 5
/* Timeout for Wakelocks in HIP */
#define SLSI_HIP_WAKELOCK_TIME_OUT_IN_MS (1000)
#ifdef CONFIG_SCSC_WLAN_DEBUG
static u64 histogram_1;
static u64 histogram_2;
static u64 histogram_3;
static u64 histogram_4;
static u64 histogram_5;
static u64 histogram_6;
static u64 max_jitter;
#define HISTO_1 1000 /* 1 us */
#define HISTO_2 10000 /* 10 us */
#define HISTO_3 100000 /* 100 us */
#define HISTO_4 1000000 /* 1ms */
#define HISTO_5 10000000 /* 10ms */
static u64 histogram_1_data;
static u64 histogram_2_data;
static u64 histogram_3_data;
static u64 histogram_4_data;
static u64 histogram_5_data;
static u64 histogram_6_data;
static u64 max_data;
#define HISTO_1_DATA 50 /* 50 th data packets */
#define HISTO_2_DATA 100/* 100 th data packets */
#define HISTO_3_DATA 150/* 150 th data packets */
#define HISTO_4_DATA 200/* 200 th data packets */
#define HISTO_5_DATA 250/* 250 th data packets */
/* MAX_HISTORY_RECORDS should be power of two */
#define MAX_HISTORY_RECORDS 32
#define FH 0
#define TH 1
struct hip4_history {
bool dir;
u32 signal;
u32 cnt;
ktime_t last_time;
} hip4_signal_history[MAX_HISTORY_RECORDS];
static u32 history_record;
/* This function should be called from atomic context */
static void hip4_history_record_add(bool dir, u32 signal_id)
{
struct hip4_history record;
record = hip4_signal_history[history_record];
if (record.signal == signal_id && record.dir == dir) {
/* If last signal and direction is the same, increment counter */
record.last_time = ktime_get();
record.cnt += 1;
hip4_signal_history[history_record] = record;
return;
}
history_record = (history_record + 1) & (MAX_HISTORY_RECORDS - 1);
record = hip4_signal_history[history_record];
record.dir = dir;
record.signal = signal_id;
record.cnt = 1;
record.last_time = ktime_get();
hip4_signal_history[history_record] = record;
}
#define HIP4_HISTORY(in_seq_file, m, fmt, arg ...) \
do { \
if (in_seq_file) \
seq_printf(m, fmt, ## arg); \
else \
SLSI_ERR_NODEV(fmt, ## arg); \
} while (0)
static void hip4_history_record_print(bool in_seq_file, struct seq_file *m)
{
struct hip4_history record;
u32 i, pos;
ktime_t old;
old = ktime_set(0, 0);
/* Start with the Next record to print history in order */
pos = (history_record + 1) & (MAX_HISTORY_RECORDS - 1);
HIP4_HISTORY(in_seq_file, m, "dir\t signal\t cnt\t last_time(ns) \t\t gap(ns)\n");
HIP4_HISTORY(in_seq_file, m, "-----------------------------------------------------------------------------\n");
for (i = 0; i < MAX_HISTORY_RECORDS; i++) {
record = hip4_signal_history[pos];
/*next pos*/
if (record.cnt) {
HIP4_HISTORY(in_seq_file, m, "%s\t 0x%04x\t %d\t %lld \t%lld\n", record.dir ? "<--TH" : "FH-->",
record.signal, record.cnt, ktime_to_ns(record.last_time), ktime_to_ns(ktime_sub(record.last_time, old)));
}
old = record.last_time;
pos = (pos + 1) & (MAX_HISTORY_RECORDS - 1);
}
}
static int hip4_proc_show_history(struct seq_file *m, void *v)
{
hip4_history_record_print(true, m);
return 0;
}
static int hip4_proc_history_open(struct inode *inode, struct file *file)
{
return single_open(file, hip4_proc_show_history, PDE_DATA(inode));
}
static const struct file_operations hip4_procfs_history_fops = {
.owner = THIS_MODULE,
.open = hip4_proc_history_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int hip4_proc_show(struct seq_file *m, void *v)
{
struct slsi_hip4 *hip = m->private;
struct hip4_hip_control *hip_control;
struct slsi_dev *sdev = container_of(hip, struct slsi_dev, hip4_inst);
u8 i;
u32 conf_hip4_ver = 0;
void *hip_ptr;
if (!hip->hip_priv) {
seq_puts(m, "HIP4 not active\n");
return 0;
}
conf_hip4_ver = scsc_wifi_get_hip_config_version(&hip->hip_control->init);
/* Check if the version is supported. And get the index */
/* This is hardcoded and may change in future versions */
if (conf_hip4_ver != 4 && conf_hip4_ver != 3) {
SLSI_ERR_NODEV("FW Version %d not supported or Hip has not been set up\n", conf_hip4_ver);
return 0;
}
/* hip_ref contains the reference of the start of shared memory allocated for WLAN */
/* hip_ptr is the kernel address of hip_ref*/
hip_ptr = scsc_mx_service_mif_addr_to_ptr(sdev->service, hip->hip_ref);
/* Get hip_control pointer on shared memory */
hip_control = (struct hip4_hip_control *)(hip_ptr +
HIP4_WLAN_CONFIG_OFFSET);
seq_puts(m, "-----------------------------------------\n");
seq_puts(m, "HIP4 CONFIG:\n");
seq_puts(m, "-----------------------------------------\n");
seq_printf(m, "config kernel addr = %p\n", hip_control);
if (conf_hip4_ver == 4) {
seq_printf(m, "hip4_version_4 addr = 0x%p\n", &hip_control->config_v4);
seq_printf(m, "magic_number = 0x%x\n", hip_control->config_v4.magic_number);
seq_printf(m, "hip_config_ver = 0x%x\n", hip_control->config_v4.hip_config_ver);
seq_printf(m, "config_len = 0x%x\n", hip_control->config_v4.config_len);
seq_printf(m, "compat_flag = 0x%x\n", hip_control->config_v4.compat_flag);
seq_printf(m, "sap_mlme_ver = 0x%x\n", hip_control->config_v4.sap_mlme_ver);
seq_printf(m, "sap_ma_ver = 0x%x\n", hip_control->config_v4.sap_ma_ver);
seq_printf(m, "sap_debug_ver = 0x%x\n", hip_control->config_v4.sap_debug_ver);
seq_printf(m, "sap_test_ver = 0x%x\n", hip_control->config_v4.sap_test_ver);
seq_printf(m, "fw_build_id = 0x%x\n", hip_control->config_v4.fw_build_id);
seq_printf(m, "fw_patch_id = 0x%x\n", hip_control->config_v4.fw_patch_id);
seq_printf(m, "unidat_req_headroom = 0x%x\n", hip_control->config_v4.unidat_req_headroom);
seq_printf(m, "unidat_req_tailroom = 0x%x\n", hip_control->config_v4.unidat_req_tailroom);
seq_printf(m, "bulk_buffer_align = 0x%x\n", hip_control->config_v4.bulk_buffer_align);
seq_printf(m, "host_cache_line = 0x%x\n", hip_control->config_v4.host_cache_line);
seq_printf(m, "host_buf_loc = 0x%x\n", hip_control->config_v4.host_buf_loc);
seq_printf(m, "host_buf_sz = 0x%x\n", hip_control->config_v4.host_buf_sz);
seq_printf(m, "fw_buf_loc = 0x%x\n", hip_control->config_v4.fw_buf_loc);
seq_printf(m, "fw_buf_sz = 0x%x\n", hip_control->config_v4.fw_buf_sz);
seq_printf(m, "mib_buf_loc = 0x%x\n", hip_control->config_v4.mib_loc);
seq_printf(m, "mib_buf_sz = 0x%x\n", hip_control->config_v4.mib_sz);
seq_printf(m, "log_config_loc = 0x%x\n", hip_control->config_v4.log_config_loc);
seq_printf(m, "log_config_sz = 0x%x\n", hip_control->config_v4.log_config_sz);
seq_printf(m, "mif_fh_int_n = 0x%x\n", hip_control->config_v4.mif_fh_int_n);
seq_printf(m, "mif_th_int_n[FH_CTRL] = 0x%x\n", hip_control->config_v4.mif_th_int_n[HIP4_MIF_Q_FH_CTRL]);
seq_printf(m, "mif_th_int_n[FH_DAT] = 0x%x\n", hip_control->config_v4.mif_th_int_n[HIP4_MIF_Q_FH_DAT]);
seq_printf(m, "mif_th_int_n[FH_RFB] = 0x%x\n", hip_control->config_v4.mif_th_int_n[HIP4_MIF_Q_FH_RFB]);
seq_printf(m, "mif_th_int_n[TH_CTRL] = 0x%x\n", hip_control->config_v4.mif_th_int_n[HIP4_MIF_Q_TH_CTRL]);
seq_printf(m, "mif_th_int_n[TH_DAT] = 0x%x\n", hip_control->config_v4.mif_th_int_n[HIP4_MIF_Q_TH_DAT]);
seq_printf(m, "mif_th_int_n[TH_RFB] = 0x%x\n", hip_control->config_v4.mif_th_int_n[HIP4_MIF_Q_TH_RFB]);
seq_printf(m, "scbrd_loc = 0x%x\n", hip_control->config_v4.scbrd_loc);
seq_printf(m, "q_num = 0x%x\n", hip_control->config_v4.q_num);
seq_printf(m, "q_len = 0x%x\n", hip_control->config_v4.q_len);
seq_printf(m, "q_idx_sz = 0x%x\n", hip_control->config_v4.q_idx_sz);
for (i = 0; i < MIF_HIP_CFG_Q_NUM; i++)
seq_printf(m, "q_loc[%d] = 0x%x\n", i, hip_control->config_v4.q_loc[i]);
} else if (conf_hip4_ver == 5) {
seq_printf(m, "hip4_version_5 addr = 0x%p\n", &hip_control->config_v5);
seq_printf(m, "magic_number = 0x%x\n", hip_control->config_v5.magic_number);
seq_printf(m, "hip_config_ver = 0x%x\n", hip_control->config_v5.hip_config_ver);
seq_printf(m, "config_len = 0x%x\n", hip_control->config_v5.config_len);
seq_printf(m, "compat_flag = 0x%x\n", hip_control->config_v5.compat_flag);
seq_printf(m, "sap_mlme_ver = 0x%x\n", hip_control->config_v5.sap_mlme_ver);
seq_printf(m, "sap_ma_ver = 0x%x\n", hip_control->config_v5.sap_ma_ver);
seq_printf(m, "sap_debug_ver = 0x%x\n", hip_control->config_v5.sap_debug_ver);
seq_printf(m, "sap_test_ver = 0x%x\n", hip_control->config_v5.sap_test_ver);
seq_printf(m, "fw_build_id = 0x%x\n", hip_control->config_v5.fw_build_id);
seq_printf(m, "fw_patch_id = 0x%x\n", hip_control->config_v5.fw_patch_id);
seq_printf(m, "unidat_req_headroom = 0x%x\n", hip_control->config_v5.unidat_req_headroom);
seq_printf(m, "unidat_req_tailroom = 0x%x\n", hip_control->config_v5.unidat_req_tailroom);
seq_printf(m, "bulk_buffer_align = 0x%x\n", hip_control->config_v5.bulk_buffer_align);
seq_printf(m, "host_cache_line = 0x%x\n", hip_control->config_v5.host_cache_line);
seq_printf(m, "host_buf_loc = 0x%x\n", hip_control->config_v5.host_buf_loc);
seq_printf(m, "host_buf_sz = 0x%x\n", hip_control->config_v5.host_buf_sz);
seq_printf(m, "fw_buf_loc = 0x%x\n", hip_control->config_v5.fw_buf_loc);
seq_printf(m, "fw_buf_sz = 0x%x\n", hip_control->config_v5.fw_buf_sz);
seq_printf(m, "mib_buf_loc = 0x%x\n", hip_control->config_v5.mib_loc);
seq_printf(m, "mib_buf_sz = 0x%x\n", hip_control->config_v5.mib_sz);
seq_printf(m, "log_config_loc = 0x%x\n", hip_control->config_v5.log_config_loc);
seq_printf(m, "log_config_sz = 0x%x\n", hip_control->config_v5.log_config_sz);
seq_printf(m, "mif_fh_int_n = 0x%x\n", hip_control->config_v5.mif_fh_int_n);
seq_printf(m, "mif_th_int_n = 0x%x\n", hip_control->config_v5.mif_th_int_n);
seq_printf(m, "scbrd_loc = 0x%x\n", hip_control->config_v5.scbrd_loc);
seq_printf(m, "q_num = 0x%x\n", hip_control->config_v5.q_num);
seq_printf(m, "q_len = 0x%x\n", hip_control->config_v5.q_len);
seq_printf(m, "q_idx_sz = 0x%x\n", hip_control->config_v5.q_idx_sz);
for (i = 0; i < MIF_HIP_CFG_Q_NUM; i++)
seq_printf(m, "q_loc[%d] = 0x%x\n", i, hip_control->config_v5.q_loc[i]);
}
seq_puts(m, "\n-----------------------------------------\n");
seq_puts(m, "HIP4 SCOREBOARD INDEXES:\n");
seq_puts(m, "-----------------------------------------\n");
seq_printf(m, "ktime start %lld (ns)\n", ktime_to_ns(hip->hip_priv->stats.start));
seq_printf(m, "ktime now %lld (ns)\n\n", ktime_to_ns(ktime_get()));
seq_printf(m, "rx_intr_tohost 0x%x\n", hip->hip_priv->intr_tohost);
seq_printf(m, "rx_intr_fromhost 0x%x\n\n", hip->hip_priv->intr_fromhost);
/* HIP statistics */
seq_printf(m, "HIP IRQs: %u\n", atomic_read(&hip->hip_priv->stats.irqs));
seq_printf(m, "HIP IRQs spurious: %u\n", atomic_read(&hip->hip_priv->stats.spurious_irqs));
seq_printf(m, "FW debug-inds: %u\n\n", atomic_read(&sdev->debug_inds));
seq_puts(m, "Queue\tIndex\tFrames\n");
seq_puts(m, "-----\t-----\t------\n");
/* Print scoreboard */
for (i = 0; i < MIF_HIP_CFG_Q_NUM; i++) {
seq_printf(m, "Q%dW\t0x%x\t\n", i, hip4_read_index(hip, i, widx));
seq_printf(m, "Q%dR\t0x%x\t%d\n", i, hip4_read_index(hip, i, ridx), hip->hip_priv->stats.q_num_frames[i]);
}
seq_puts(m, "\n");
return 0;
}
static int hip4_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, hip4_proc_show, PDE_DATA(inode));
}
static const struct file_operations hip4_procfs_stats_fops = {
.owner = THIS_MODULE,
.open = hip4_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int hip4_proc_jitter_show(struct seq_file *m, void *v)
{
seq_puts(m, "Values in ns\n");
seq_printf(m, "<%d(ns)\t\t\t\t %lld\n", HISTO_1, histogram_1);
seq_printf(m, "%d(ns)-%d(ns)\t\t\t %lld\n", HISTO_1, HISTO_2, histogram_2);
seq_printf(m, "%d(ns)-%d(ns)\t\t\t %lld\n", HISTO_2, HISTO_3, histogram_3);
seq_printf(m, "%d(ns)-%d(ns)\t\t\t %lld\n", HISTO_3, HISTO_4, histogram_4);
seq_printf(m, "%d(ns)-%d(ns)\t\t %lld\n", HISTO_4, HISTO_5, histogram_5);
seq_printf(m, ">%d(ns)\t\t\t\t %lld\n", HISTO_5, histogram_6);
seq_printf(m, "max jitter(ns)\t\t\t\t %lld\n", max_jitter);
seq_puts(m, "--------------------------\n");
seq_puts(m, "Packets in TH DATA Q\n");
seq_printf(m, "<%d\t\t%lld\n", HISTO_1_DATA, histogram_1_data);
seq_printf(m, "%d-%d\t\t%lld\n", HISTO_1_DATA, HISTO_2_DATA, histogram_2_data);
seq_printf(m, "%d-%d\t\t%lld\n", HISTO_2_DATA, HISTO_3_DATA, histogram_3_data);
seq_printf(m, "%d-%d\t\t%lld\n", HISTO_3_DATA, HISTO_4_DATA, histogram_4_data);
seq_printf(m, "%d-%d\t\t%lld\n", HISTO_4_DATA, HISTO_5_DATA, histogram_5_data);
seq_printf(m, ">%d\t\t%lld\n", HISTO_5_DATA, histogram_6_data);
seq_printf(m, "max data\t%lld\n", max_data);
return 0;
}
static int hip4_proc_jitter_open(struct inode *inode, struct file *file)
{
return single_open(file, hip4_proc_jitter_show, PDE_DATA(inode));
}
static ssize_t hip4_proc_jitter_clear(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos)
{
SLSI_INFO_NODEV("Clear Histogram\n");
histogram_1 = 0;
histogram_2 = 0;
histogram_3 = 0;
histogram_4 = 0;
histogram_5 = 0;
histogram_6 = 0;
max_jitter = 0;
histogram_1_data = 0;
histogram_2_data = 0;
histogram_3_data = 0;
histogram_4_data = 0;
histogram_5_data = 0;
histogram_6_data = 0;
max_data = 0;
return count;
}
static const struct file_operations hip4_procfs_jitter_fops = {
.owner = THIS_MODULE,
.open = hip4_proc_jitter_open,
.write = hip4_proc_jitter_clear,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
#endif
#define FB_NO_SPC_NUM_RET 100
#define FB_NO_SPC_SLEEP_MS 10
#define FB_NO_SPC_DELAY_US 1000
/* Update scoreboard index */
/* Function can be called from BH context */
static void hip4_update_index(struct slsi_hip4 *hip, u32 q, enum rw r_w, u8 value)
{
struct hip4_priv *hip_priv = hip->hip_priv;
write_lock_bh(&hip_priv->rw_scoreboard);
if (hip->hip_priv->version == 5 || hip->hip_priv->version == 4) {
*((u8 *)(hip->hip_priv->scbrd_base + q_idx_layout[q][r_w])) = value;
} else {
SLSI_ERR_NODEV("Incorrect version\n");
goto error;
}
/* Memory barrier when updating shared mailbox/memory */
smp_wmb();
SCSC_HIP4_SAMPLER_Q(hip_priv->minor, q, r_w, value, 0);
error:
write_unlock_bh(&hip_priv->rw_scoreboard);
}
/* Read scoreboard index */
/* Function can be called from BH context */
static u8 hip4_read_index(struct slsi_hip4 *hip, u32 q, enum rw r_w)
{
struct hip4_priv *hip_priv = hip->hip_priv;
u32 value = 0;
read_lock_bh(&hip_priv->rw_scoreboard);
if (hip->hip_priv->version == 5 || hip->hip_priv->version == 4) {
value = *((u8 *)(hip->hip_priv->scbrd_base + q_idx_layout[q][r_w]));
} else {
SLSI_ERR_NODEV("Incorrect version\n");
goto error;
}
/* Memory barrier when reading shared mailbox/memory */
smp_rmb();
error:
read_unlock_bh(&hip_priv->rw_scoreboard);
return value;
}
static void hip4_dump_dbg(struct slsi_hip4 *hip, struct mbulk *m, struct sk_buff *skb, struct scsc_service *service)
{
unsigned int i = 0;
scsc_mifram_ref ref;
#ifdef CONFIG_SCSC_WLAN_RX_NAPI
SLSI_ERR_NODEV("intr_tohost_fb 0x%x\n", hip->hip_priv->intr_tohost_mul[HIP4_MIF_Q_FH_RFB]);
SLSI_ERR_NODEV("intr_tohost_ctrl 0x%x\n", hip->hip_priv->intr_tohost_mul[HIP4_MIF_Q_TH_CTRL]);
SLSI_ERR_NODEV("intr_tohost_dat 0x%x\n", hip->hip_priv->intr_tohost_mul[HIP4_MIF_Q_TH_DAT]);
#else
SLSI_ERR_NODEV("intr_tohost 0x%x\n", hip->hip_priv->intr_tohost);
#endif
SLSI_ERR_NODEV("intr_fromhost 0x%x\n", hip->hip_priv->intr_fromhost);
/* Print scoreboard */
for (i = 0; i < 6; i++) {
SLSI_ERR_NODEV("Q%dW 0x%x\n", i, hip4_read_index(hip, i, widx));
SLSI_ERR_NODEV("Q%dR 0x%x\n", i, hip4_read_index(hip, i, ridx));
}
if (service)
scsc_mx_service_mif_dump_registers(service);
if (m && service) {
if (scsc_mx_service_mif_ptr_to_addr(service, m, &ref))
return;
SLSI_ERR_NODEV("m: %p 0x%x\n", m, ref);
print_hex_dump(KERN_ERR, SCSC_PREFIX "mbulk ", DUMP_PREFIX_NONE, 16, 1, m, sizeof(struct mbulk), 0);
}
if (m && mbulk_has_signal(m))
print_hex_dump(KERN_ERR, SCSC_PREFIX "sig ", DUMP_PREFIX_NONE, 16, 1, mbulk_get_signal(m),
MBULK_SEG_SIG_BUFSIZE(m), 0);
if (skb)
print_hex_dump(KERN_ERR, SCSC_PREFIX "skb ", DUMP_PREFIX_NONE, 16, 1, skb->data, skb->len > 0xff ? 0xff : skb->len, 0);
SLSI_ERR_NODEV("time: wdt %lld\n", ktime_to_ns(wdt));
SLSI_ERR_NODEV("time: send %lld\n", ktime_to_ns(send));
#ifdef CONFIG_SCSC_WLAN_RX_NAPI
SLSI_ERR_NODEV("time: intr_fb %lld\n", ktime_to_ns(intr_received_fb));
SLSI_ERR_NODEV("time: bh_init_fb %lld\n", ktime_to_ns(bh_init_fb));
SLSI_ERR_NODEV("time: bh_end_fb %lld\n", ktime_to_ns(bh_end_fb));
SLSI_ERR_NODEV("time: intr_ctrl %lld\n", ktime_to_ns(intr_received_ctrl));
SLSI_ERR_NODEV("time: bh_init_ctrl %lld\n", ktime_to_ns(bh_init_ctrl));
SLSI_ERR_NODEV("time: bh_end_ctrl %lld\n", ktime_to_ns(bh_end_ctrl));
SLSI_ERR_NODEV("time: intr_data %lld\n", ktime_to_ns(intr_received_data));
SLSI_ERR_NODEV("time: bh_init_data %lld\n", ktime_to_ns(bh_init_data));
SLSI_ERR_NODEV("time: bh_end_data %lld\n", ktime_to_ns(bh_end_data));
#else
SLSI_ERR_NODEV("time: intr %lld\n", ktime_to_ns(intr_received));
SLSI_ERR_NODEV("time: bh_init %lld\n", ktime_to_ns(bh_init));
SLSI_ERR_NODEV("time: bh_end %lld\n", ktime_to_ns(bh_end));
#endif
SLSI_ERR_NODEV("time: closing %lld\n", ktime_to_ns(closing));
#ifdef CONFIG_SCSC_WLAN_DEBUG
/* Discard noise if it is a mbulk/skb issue */
if (!skb && !m)
hip4_history_record_print(false, NULL);
#endif
}
/* Transform skb to mbulk (fapi_signal + payload) */
static struct mbulk *hip4_skb_to_mbulk(struct hip4_priv *hip, struct sk_buff *skb, bool ctrl_packet, mbulk_colour colour)
{
struct mbulk *m = NULL;
void *sig = NULL, *b_data = NULL;
size_t payload = 0;
u8 pool_id = ctrl_packet ? MBULK_POOL_ID_CTRL : MBULK_POOL_ID_DATA;
u8 headroom = 0, tailroom = 0;
enum mbulk_class clas = ctrl_packet ? MBULK_CLASS_FROM_HOST_CTL : MBULK_CLASS_FROM_HOST_DAT;
struct slsi_skb_cb *cb = slsi_skb_cb_get(skb);
#ifdef CONFIG_SCSC_WLAN_SG
u32 linear_data;
u32 offset;
u8 i;
#endif
payload = skb->len - cb->sig_length;
/* Get headroom/tailroom */
headroom = hip->unidat_req_headroom;
tailroom = hip->unidat_req_tailroom;
/* Allocate mbulk */
if (payload > 0) {
/* If signal include payload, add headroom and tailroom */
m = mbulk_with_signal_alloc_by_pool(pool_id, colour, clas, cb->sig_length + 4,
payload + headroom + tailroom);
if (!m)
return NULL;
if (!mbulk_reserve_head(m, headroom))
return NULL;
} else {
/* If it is only a signal do not add headroom */
m = mbulk_with_signal_alloc_by_pool(pool_id, colour, clas, cb->sig_length + 4, 0);
if (!m)
return NULL;
}
/* Get signal handler */
sig = mbulk_get_signal(m);
if (!sig) {
mbulk_free_virt_host(m);
return NULL;
}
/* Copy signal */
/* 4Bytes offset is required for FW fapi header */
memcpy(sig + 4, skb->data, cb->sig_length);
/* Copy payload */
/* If the signal has payload memcpy the data */
if (payload > 0) {
/* Get head pointer */
b_data = mbulk_dat_rw(m);
if (!b_data) {
mbulk_free_virt_host(m);
return NULL;
}
#ifdef CONFIG_SCSC_WLAN_SG
/* The amount of non-paged data at skb->data can be calculated as skb->len - skb->data_len.
* Helper routine: skb_headlen() .
*/
linear_data = skb_headlen(skb) - cb->sig_length;
offset = 0;
/* Copy the linear data */
if (linear_data > 0) {
/* Copy the linear payload skipping the signal data */
memcpy(b_data, skb->data + cb->sig_length, linear_data);
offset = linear_data;
}
/* Traverse fragments and copy in to linear DRAM memory */
for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
skb_frag_t *frag = NULL;
void *frag_va_data;
unsigned int frag_size;
frag = &skb_shinfo(skb)->frags[i];
WARN_ON(!frag);
if (!frag)
continue;
frag_va_data = skb_frag_address_safe(frag);
WARN_ON(!frag_va_data);
if (!frag_va_data)
continue;
frag_size = skb_frag_size(frag);
/* Copy the fragmented data */
memcpy(b_data + offset, frag_va_data, frag_size);
offset += frag_size;
}
/* Check whether the driver should perform the checksum */
if (skb->ip_summed == CHECKSUM_PARTIAL) {
SLSI_DBG3_NODEV(SLSI_HIP, "CHECKSUM_PARTIAL. Driver performing checksum\n");
if (skb->protocol == htons(ETH_P_IP)) {
struct ethhdr *mach = (struct ethhdr *)b_data;
struct iphdr *iph = (struct iphdr *)((char *)b_data + sizeof(*mach));
unsigned int len = payload - sizeof(*mach) - (iph->ihl << 2);
if (iph->protocol == IPPROTO_TCP) {
struct tcphdr *th = (struct tcphdr *)((char *)b_data + sizeof(*mach) +
(iph->ihl << 2));
th->check = 0;
th->check = csum_tcpudp_magic(iph->saddr, iph->daddr, len,
IPPROTO_TCP,
csum_partial((char *)th, len, 0));
SLSI_DBG3_NODEV(SLSI_HIP, "th->check 0x%x\n", ntohs(th->check));
} else if (iph->protocol == IPPROTO_UDP) {
struct udphdr *uh = (struct udphdr *)((char *)b_data + sizeof(*mach) +
(iph->ihl << 2));
uh->check = 0;
uh->check = csum_tcpudp_magic(iph->saddr, iph->daddr, len,
IPPROTO_UDP,
csum_partial((char *)uh, len, 0));
SLSI_DBG3_NODEV(SLSI_HIP, "uh->check 0x%x\n", ntohs(uh->check));
}
}
}
#else
/* Copy payload skipping the signal data */
memcpy(b_data, skb->data + cb->sig_length, payload);
#endif
mbulk_append_tail(m, payload);
}
m->flag |= MBULK_F_OBOUND;
#ifdef CONFIG_SCSC_SMAPPER
/* Clear smapper field */
cb->skb_addr = NULL;
#endif
return m;
}
/* Transform mbulk to skb (fapi_signal + payload) */
static struct sk_buff *hip4_mbulk_to_skb(struct scsc_service *service, struct hip4_priv *hip_priv, struct mbulk *m, scsc_mifram_ref *to_free, bool atomic)
{
struct slsi_skb_cb *cb;
struct mbulk *next_mbulk[MBULK_MAX_CHAIN];
struct sk_buff *skb = NULL;
scsc_mifram_ref ref;
scsc_mifram_ref m_chain_next;
u8 free = 0;
u8 i = 0, j = 0;
u8 *p;
size_t bytes_to_alloc = 0;
/* Get the mif ref pointer, check for incorrect mbulk */
if (scsc_mx_service_mif_ptr_to_addr(service, m, &ref)) {
SLSI_ERR_NODEV("mbulk address conversion failed\n");
return NULL;
}
/* Track mbulk that should be freed */
to_free[free++] = ref;
bytes_to_alloc += m->sig_bufsz - 4;
bytes_to_alloc += m->len;
/* Detect Chained mbulk to start building the chain */
if ((MBULK_SEG_IS_CHAIN_HEAD(m)) && (MBULK_SEG_IS_CHAINED(m))) {
m_chain_next = mbulk_chain_next(m);
if (!m_chain_next) {
SLSI_ERR_NODEV("Mbulk is set MBULK_F_CHAIN_HEAD and MBULK_F_CHAIN but m_chain_next is NULL\n");
goto cont;
}
while (1) {
/* increase number mbulks in chain */
i++;
/* Get next_mbulk kernel address space pointer */
next_mbulk[i - 1] = scsc_mx_service_mif_addr_to_ptr(service, m_chain_next);
if (!next_mbulk[i - 1]) {
SLSI_ERR_NODEV("First Mbulk is set as MBULK_F_CHAIN but next_mbulk is NULL\n");
return NULL;
}
/* Track mbulk to be freed */
to_free[free++] = m_chain_next;
bytes_to_alloc += next_mbulk[i - 1]->len;
if (MBULK_SEG_IS_CHAINED(next_mbulk[i - 1])) {
/* continue traversing the chain */
m_chain_next = mbulk_chain_next(next_mbulk[i - 1]);
if (!m_chain_next)
break;
if (i >= MBULK_MAX_CHAIN) {
SLSI_ERR_NODEV("Max number of chained MBULK reached\n");
return NULL;
}
} else {
break;
}
}
}
cont:
if (atomic) {
skb = alloc_skb(bytes_to_alloc, GFP_ATOMIC);
} else {
spin_unlock_bh(&hip_priv->rx_lock);
skb = alloc_skb(bytes_to_alloc, GFP_KERNEL);
spin_lock_bh(&hip_priv->rx_lock);
}
if (!skb) {
SLSI_ERR_NODEV("Error allocating skb %d bytes\n", bytes_to_alloc);
return NULL;
}
cb = slsi_skb_cb_init(skb);
cb->sig_length = m->sig_bufsz - 4;
/* fapi_data_append adds to the data_length */
cb->data_length = cb->sig_length;
p = mbulk_get_signal(m);
if (!p) {
SLSI_ERR_NODEV("No signal in Mbulk\n");
print_hex_dump(KERN_ERR, SCSC_PREFIX "mbulk ", DUMP_PREFIX_NONE, 16, 1, m, sizeof(struct mbulk), 0);
#ifdef CONFIG_SCSC_SMAPPER
hip4_smapper_free_mapped_skb(skb);
#endif
kfree_skb(skb);
return NULL;
}
/* Remove 4Bytes offset coming from FW */
p += 4;
/* Don't need to copy the 4Bytes header coming from the FW */
memcpy(skb_put(skb, cb->sig_length), p, cb->sig_length);
if (m->len)
fapi_append_data(skb, mbulk_dat_r(m), m->len);
for (j = 0; j < i; j++)
fapi_append_data(skb, mbulk_dat_r(next_mbulk[j]), next_mbulk[j]->len);
return skb;
}
/* Add signal reference (offset in shared memory) in the selected queue */
/* This function should be called in atomic context. Callers should supply proper locking mechanism */
static int hip4_q_add_signal(struct slsi_hip4 *hip, enum hip4_hip_q_conf conf, scsc_mifram_ref phy_m, struct scsc_service *service)
{
struct hip4_hip_control *ctrl = hip->hip_control;
struct hip4_priv *hip_priv = hip->hip_priv;
u8 idx_w;
u8 idx_r;
/* Read the current q write pointer */
idx_w = hip4_read_index(hip, conf, widx);
/* Read the current q read pointer */
idx_r = hip4_read_index(hip, conf, ridx);
SCSC_HIP4_SAMPLER_Q(hip_priv->minor, conf, widx, idx_w, 1);
SCSC_HIP4_SAMPLER_Q(hip_priv->minor, conf, ridx, idx_r, 1);
/* Queueu is full */
if (idx_r == ((idx_w + 1) & (MAX_NUM - 1)))
return -ENOSPC;
/* Update array */
ctrl->q[conf].array[idx_w] = phy_m;
/* Memory barrier before updating shared mailbox */
smp_wmb();
SCSC_HIP4_SAMPLER_QREF(hip_priv->minor, phy_m, conf);
#ifdef CONFIG_SCSC_WLAN_DEBUG
hip->hip_priv->stats.q_num_frames[conf] = hip->hip_priv->stats.q_num_frames[conf] + 1;
#endif
/* Increase index */
idx_w++;
idx_w &= (MAX_NUM - 1);
/* Update the scoreboard */
hip4_update_index(hip, conf, widx, idx_w);
send = ktime_get();
scsc_service_mifintrbit_bit_set(service, hip_priv->intr_fromhost, SCSC_MIFINTR_TARGET_R4);
return 0;
}
#if KERNEL_VERSION(4, 15, 0) <= LINUX_VERSION_CODE
static void hip4_watchdog(struct timer_list *t)
#else
static void hip4_watchdog(unsigned long data)
#endif
{
#if KERNEL_VERSION(4, 15, 0) <= LINUX_VERSION_CODE
struct hip4_priv *priv = from_timer(priv, t, watchdog);
struct slsi_hip4 *hip = priv->hip;
#else
struct slsi_hip4 *hip = (struct slsi_hip4 *)data;
#endif
struct slsi_dev *sdev = container_of(hip, struct slsi_dev, hip4_inst);
struct scsc_service *service;
ktime_t intr_ov;
unsigned long flags;
#ifdef CONFIG_SCSC_WLAN_RX_NAPI
bool retrigger_watchdog = true;
#endif
u8 i;
if (!hip || !sdev || !sdev->service || !hip->hip_priv)
return;
spin_lock_irqsave(&hip->hip_priv->watchdog_lock, flags);
if (!atomic_read(&hip->hip_priv->watchdog_timer_active))
goto exit;
wdt = ktime_get();
#ifdef CONFIG_SCSC_WLAN_RX_NAPI
/* if intr_received > wdt skip as intr has been unblocked */
if (test_and_clear_bit(HIP4_MIF_Q_FH_RFB, hip->hip_priv->irq_bitmap)) {
intr_ov = ktime_add_ms(intr_received_fb, jiffies_to_msecs(HZ));
if ((ktime_compare(intr_ov, wdt) < 0))
retrigger_watchdog = false;
}
if (test_and_clear_bit(HIP4_MIF_Q_TH_CTRL, hip->hip_priv->irq_bitmap)) {
intr_ov = ktime_add_ms(intr_received_ctrl, jiffies_to_msecs(HZ));
if ((ktime_compare(intr_ov, wdt) < 0))
retrigger_watchdog = false;
}
if (test_and_clear_bit(HIP4_MIF_Q_TH_DAT, hip->hip_priv->irq_bitmap)) {
intr_ov = ktime_add_ms(intr_received_data, jiffies_to_msecs(HZ));
if ((ktime_compare(intr_ov, wdt) < 0))
retrigger_watchdog = false;
}
if (retrigger_watchdog) {
wdt = ktime_set(0, 0);
/* Retrigger WDT to check flags again in the future */
mod_timer(&hip->hip_priv->watchdog, jiffies + HZ / 2);
goto exit;
}
#else
/* if intr_received > wdt skip as intr has been unblocked */
if (ktime_compare(intr_received, wdt) > 0) {
wdt = ktime_set(0, 0);
goto exit;
}
intr_ov = ktime_add_ms(intr_received, jiffies_to_msecs(HZ));
/* Check that wdt is > 1 HZ intr */
if (!(ktime_compare(intr_ov, wdt) < 0)) {
wdt = ktime_set(0, 0);
/* Retrigger WDT to check flags again in the future */
mod_timer(&hip->hip_priv->watchdog, jiffies + HZ / 2);
goto exit;
}
#endif
/* Unlock irq to avoid __local_bh_enable_ip warning */
spin_unlock_irqrestore(&hip->hip_priv->watchdog_lock, flags);
hip4_dump_dbg(hip, NULL, NULL, sdev->service);
spin_lock_irqsave(&hip->hip_priv->watchdog_lock, flags);
service = sdev->service;
SLSI_INFO_NODEV("Hip4 watchdog triggered\n");
#ifdef CONFIG_SCSC_WLAN_RX_NAPI
for (i = 0; i < MIF_HIP_CFG_Q_NUM; i++) {
if (hip->hip_priv->intr_tohost_mul[i] == MIF_NO_IRQ)
continue;
if (scsc_service_mifintrbit_bit_mask_status_get(service) & (1 << hip->hip_priv->intr_tohost_mul[i])) {
/* Interrupt might be pending! */
SLSI_INFO_NODEV("%d: Interrupt Masked. Unmask to restart Interrupt processing\n", i);
scsc_service_mifintrbit_bit_unmask(service, hip->hip_priv->intr_tohost_mul[i]);
}
}
#else
if (scsc_service_mifintrbit_bit_mask_status_get(service) & (1 << hip->hip_priv->intr_tohost)) {
/* Interrupt might be pending! */
SLSI_INFO_NODEV("Interrupt Masked. Unmask to restart Interrupt processing\n");
scsc_service_mifintrbit_bit_unmask(service, hip->hip_priv->intr_tohost);
}
#endif
exit:
spin_unlock_irqrestore(&hip->hip_priv->watchdog_lock, flags);
}
#ifdef CONFIG_SCSC_WLAN_RX_NAPI
void hip4_set_napi_cpu(struct slsi_hip4 *hip, u8 napi_cpu, bool perf_mode)
{
struct hip4_priv *hip_priv;
struct slsi_dev *sdev;
unsigned long flags;
if (!hip)
return;
sdev = container_of(hip, struct slsi_dev, hip4_inst);
if (!sdev)
return;
hip_priv = hip->hip_priv;
if (!hip_priv)
return;
if (!cpu_online(napi_cpu)) {
SLSI_ERR_NODEV("CPU%d is offline.\n", napi_cpu);
scsc_service_mifintrbit_bit_unmask(sdev->service, hip->hip_priv->intr_tohost_mul[HIP4_MIF_Q_TH_DAT]);
return;
}
slsi_wake_lock(&hip->hip_priv->hip4_wake_lock_data);
if (napi_cpu != napi_select_cpu) {
spin_lock_irqsave(&hip->hip_priv->napi_cpu_lock, flags);
scsc_service_mifintrbit_bit_mask(sdev->service, hip->hip_priv->intr_tohost_mul[HIP4_MIF_Q_TH_DAT]);
if (!test_bit(SLSI_HIP_NAPI_STATE_ENABLED, &hip->hip_priv->napi_state)) {
slsi_wake_unlock(&hip->hip_priv->hip4_wake_lock_data);
SLSI_INFO_NODEV("NAPI is already disabled on CPU%d\n", napi_select_cpu);
spin_unlock_irqrestore(&hip->hip_priv->napi_cpu_lock, flags);
return;
}
SLSI_INFO_NODEV("disable NAPI on CPU%d\n", napi_select_cpu);
clear_bit(SLSI_HIP_NAPI_STATE_ENABLED, &hip->hip_priv->napi_state);
napi_select_cpu = napi_cpu;
/* napi_disable may sleep, so release the lock */
spin_unlock_irqrestore(&hip->hip_priv->napi_cpu_lock, flags);
napi_disable(&hip->hip_priv->napi);
#if defined(CONFIG_SOC_S5E9815) && defined(CONFIG_SCSC_QOS)
/**
* In case where irq affinity set is failed,
* we allow that IRQ and napi are scheduled in different core.
*/
if (scsc_service_set_affinity_cpu(sdev->service, napi_select_cpu) != 0)
SLSI_ERR_NODEV("failed to change IRQ affinity (CPU%d)\n", napi_select_cpu);
#endif
local_bh_disable();
spin_lock_irqsave(&hip->hip_priv->napi_cpu_lock, flags);
hip_priv->napi_perf_mode = perf_mode;
if (!test_and_set_bit(SLSI_HIP_NAPI_STATE_ENABLED, &hip->hip_priv->napi_state)) {
SLSI_INFO_NODEV("enable NAPI on CPU%d\n", napi_select_cpu);
napi_enable(&hip->hip_priv->napi);
if (napi_select_cpu == smp_processor_id()) {
napi_schedule(&hip->hip_priv->napi);
} else {
if (napi_select_cpu && cpu_online(napi_select_cpu))
schedule_work_on(napi_select_cpu, &hip->hip_priv->intr_wq_napi_cpu_switch);
else
napi_schedule(&hip->hip_priv->napi);
}
}
spin_unlock_irqrestore(&hip->hip_priv->napi_cpu_lock, flags);
local_bh_enable();
}
scsc_service_mifintrbit_bit_unmask(sdev->service, hip->hip_priv->intr_tohost_mul[HIP4_MIF_Q_TH_DAT]);
slsi_wake_unlock(&hip->hip_priv->hip4_wake_lock_data);
}
static void hip4_tl_fb(unsigned long data)
{
struct slsi_hip4 *hip = (void *)data;
struct hip4_priv *hip_priv = hip->hip_priv;
struct hip4_hip_control *ctrl;
struct scsc_service *service;
struct slsi_dev *sdev;
bool no_change = true;
u8 idx_r;
u8 idx_w;
scsc_mifram_ref ref;
void *mem;
if (!hip_priv || !hip_priv->hip) {
SLSI_ERR_NODEV("hip_priv or hip_priv->hip is Null\n");
return;
}
hip = hip_priv->hip;
ctrl = hip->hip_control;
if (!ctrl) {
SLSI_ERR_NODEV("hip->hip_control is Null\n");
return;
}
sdev = container_of(hip, struct slsi_dev, hip4_inst);
if (!sdev || !sdev->service) {
SLSI_ERR_NODEV("sdev or sdev->service is Null\n");
return;
}
spin_lock_bh(&hip_priv->rx_lock);
service = sdev->service;
SCSC_HIP4_SAMPLER_INT_BH(hip->hip_priv->minor, 2);
bh_init_fb = ktime_get();
clear_bit(HIP4_MIF_Q_FH_RFB, hip->hip_priv->irq_bitmap);
idx_r = hip4_read_index(hip, HIP4_MIF_Q_FH_RFB, ridx);
idx_w = hip4_read_index(hip, HIP4_MIF_Q_FH_RFB, widx);
#ifdef CONFIG_SCSC_WLAN_HIP4_PROFILING
if (idx_r != idx_w) {
SCSC_HIP4_SAMPLER_Q(hip_priv->minor, HIP4_MIF_Q_FH_RFB, ridx, idx_r, 1);
SCSC_HIP4_SAMPLER_Q(hip_priv->minor, HIP4_MIF_Q_FH_RFB, widx, idx_w, 1);
}
#endif
while (idx_r != idx_w) {
struct mbulk *m;
mbulk_colour colour;
no_change = false;
ref = ctrl->q[HIP4_MIF_Q_FH_RFB].array[idx_r];
#ifdef CONFIG_SCSC_WLAN_HIP4_PROFILING
SCSC_HIP4_SAMPLER_QREF(hip_priv->minor, ref, HIP4_MIF_Q_FH_RFB);
#endif
mem = scsc_mx_service_mif_addr_to_ptr(service, ref);
m = (struct mbulk *)mem;
if (!m) {
SLSI_ERR_NODEV("FB: Mbulk is NULL\n");
goto consume_fb_mbulk;
}
/* Account ONLY for data RFB */
if ((m->pid & 0x1) == MBULK_POOL_ID_DATA) {
colour = mbulk_get_colour(MBULK_POOL_ID_DATA, m);
#ifdef CONFIG_SCSC_WLAN_HIP4_PROFILING
SCSC_HIP4_SAMPLER_VIF_PEER(hip->hip_priv->minor,
0,
SLSI_MBULK_COLOUR_GET_VIF(colour),
SLSI_MBULK_COLOUR_GET_PEER_IDX(colour));
/* to profile round-trip */
{
u16 host_tag;
u8 *get_host_tag;
/* This is a nasty way of getting the host_tag without involving mbulk processing
* This hostag value should also be include in the cb descriptor which goes to
* mbulk descriptor (no room left at the moment)
*/
get_host_tag = (u8 *)m;
host_tag = get_host_tag[37] << 8 | get_host_tag[36];
SCSC_HIP4_SAMPLER_PKT_TX_FB(hip->hip_priv->minor, host_tag);
}
#endif
/* Ignore return value */
slsi_hip_tx_done(sdev,
SLSI_MBULK_COLOUR_GET_VIF(colour),
SLSI_MBULK_COLOUR_GET_PEER_IDX(colour),
SLSI_MBULK_COLOUR_GET_AC(colour));
}
mbulk_free_virt_host(m);
consume_fb_mbulk:
/* Increase index */
idx_r++;
idx_r &= (MAX_NUM - 1);
hip4_update_index(hip, HIP4_MIF_Q_FH_RFB, ridx, idx_r);
}
if (no_change)
atomic_inc(&hip->hip_priv->stats.spurious_irqs);
if (!atomic_read(&hip->hip_priv->closing)) {
atomic_set(&hip->hip_priv->watchdog_timer_active, 0);
scsc_service_mifintrbit_bit_unmask(sdev->service, hip->hip_priv->intr_tohost_mul[HIP4_MIF_Q_FH_RFB]);
}
SCSC_HIP4_SAMPLER_INT_OUT_BH(hip->hip_priv->minor, 2);
if (slsi_wake_lock_active(&hip->hip_priv->hip4_wake_lock_tx)) {
slsi_wake_unlock(&hip->hip_priv->hip4_wake_lock_tx);
#ifdef CONFIG_SCSC_WLAN_ANDROID
SCSC_WLOG_WAKELOCK(WLOG_LAZY, WL_RELEASED, "hip4_wake_lock_tx", WL_REASON_RX);
#endif
}
bh_end_fb = ktime_get();
spin_unlock_bh(&hip_priv->rx_lock);
}
static void hip4_irq_handler_fb(int irq, void *data)
{
struct slsi_hip4 *hip = (struct slsi_hip4 *)data;
struct slsi_dev *sdev = container_of(hip, struct slsi_dev, hip4_inst);
SCSC_HIP4_SAMPLER_INT(hip->hip_priv->minor, 2);
intr_received_fb = ktime_get();
if (!slsi_wake_lock_active(&hip->hip_priv->hip4_wake_lock_tx)) {
slsi_wake_lock_timeout(&hip->hip_priv->hip4_wake_lock_tx, msecs_to_jiffies(SLSI_HIP_WAKELOCK_TIME_OUT_IN_MS));
#ifdef CONFIG_SCSC_WLAN_ANDROID
SCSC_WLOG_WAKELOCK(WLOG_LAZY, WL_TAKEN, "hip4_wake_lock_tx", WL_REASON_RX);
#endif
}
if (!atomic_read(&hip->hip_priv->watchdog_timer_active)) {
atomic_set(&hip->hip_priv->watchdog_timer_active, 1);
mod_timer(&hip->hip_priv->watchdog, jiffies + HZ);
}
set_bit(HIP4_MIF_Q_FH_RFB, hip->hip_priv->irq_bitmap);
scsc_service_mifintrbit_bit_mask(sdev->service, irq);
tasklet_hi_schedule(&hip->hip_priv->intr_tl_fb);
/* Clear interrupt */
scsc_service_mifintrbit_bit_clear(sdev->service, irq);
SCSC_HIP4_SAMPLER_INT_OUT(hip->hip_priv->minor, 2);
}
static void hip4_wq_ctrl(struct work_struct *data)
{
struct hip4_priv *hip_priv = container_of(data, struct hip4_priv, intr_wq_ctrl);
struct slsi_hip4 *hip;
struct hip4_hip_control *ctrl;
struct scsc_service *service;
struct slsi_dev *sdev;
u8 retry;
bool no_change = true;
u8 idx_r;
u8 idx_w;
scsc_mifram_ref ref;
void *mem;
struct mbulk *m;
#if defined(CONFIG_SCSC_WLAN_DEBUG) || defined(CONFIG_SCSC_WLAN_HIP4_PROFILING)
int id;
#endif
if (!hip_priv || !hip_priv->hip) {
SLSI_ERR_NODEV("hip_priv or hip_priv->hip is Null\n");
return;
}
hip = hip_priv->hip;
ctrl = hip->hip_control;
if (!ctrl) {
SLSI_ERR_NODEV("hip->hip_control is Null\n");
return;
}
sdev = container_of(hip, struct slsi_dev, hip4_inst);
if (!sdev || !sdev->service) {
SLSI_ERR_NODEV("sdev or sdev->service is Null\n");
return;
}
spin_lock_bh(&hip_priv->rx_lock);
service = sdev->service;
SCSC_HIP4_SAMPLER_INT_BH(hip->hip_priv->minor, 1);
bh_init_ctrl = ktime_get();
clear_bit(HIP4_MIF_Q_TH_CTRL, hip->hip_priv->irq_bitmap);
idx_r = hip4_read_index(hip, HIP4_MIF_Q_TH_CTRL, ridx);
idx_w = hip4_read_index(hip, HIP4_MIF_Q_TH_CTRL, widx);
#ifdef CONFIG_SCSC_WLAN_HIP4_PROFILING
if (idx_r != idx_w) {
SCSC_HIP4_SAMPLER_Q(hip_priv->minor, HIP4_MIF_Q_TH_CTRL, ridx, idx_r, 1);
SCSC_HIP4_SAMPLER_Q(hip_priv->minor, HIP4_MIF_Q_TH_CTRL, widx, idx_w, 1);
}
#endif
while (idx_r != idx_w) {
struct sk_buff *skb;
/* TODO: currently the max number to be freed is 2. In future
* implementations (i.e. AMPDU) this number may be bigger
* list of mbulks to be freedi
*/
scsc_mifram_ref to_free[MBULK_MAX_CHAIN + 1] = { 0 };
u8 i = 0;
no_change = false;
/* Catch-up with idx_w */
ref = ctrl->q[HIP4_MIF_Q_TH_CTRL].array[idx_r];
#ifdef CONFIG_SCSC_WLAN_HIP4_PROFILING
SCSC_HIP4_SAMPLER_QREF(hip_priv->minor, ref, HIP4_MIF_Q_TH_CTRL);
#endif
mem = scsc_mx_service_mif_addr_to_ptr(service, ref);
m = (struct mbulk *)(mem);
/* Process Control Signal */
skb = hip4_mbulk_to_skb(service, hip_priv, m, to_free, false);
if (!skb) {
SLSI_ERR_NODEV("Ctrl: Error parsing or allocating skb\n");
hip4_dump_dbg(hip, m, skb, service);
goto consume_ctl_mbulk;
}
if (m->flag & MBULK_F_WAKEUP) {
SLSI_INFO(sdev, "WIFI wakeup by MLME frame 0x%x:\n", fapi_get_sigid(skb));
SCSC_BIN_TAG_INFO(BINARY, skb->data, skb->len > 128 ? 128 : skb->len);
slsi_skb_cb_get(skb)->wakeup = true;
}
#if defined(CONFIG_SCSC_WLAN_DEBUG) || defined(CONFIG_SCSC_WLAN_HIP4_PROFILING)
id = fapi_get_sigid(skb);
#endif
#ifdef CONFIG_SCSC_WLAN_HIP4_PROFILING
/* log control signal, not unidata not debug */
if (fapi_is_mlme(skb))
SCSC_HIP4_SAMPLER_SIGNAL_CTRLRX(hip_priv->minor, (id & 0xff00) >> 8, id & 0xff);
#endif
#ifdef CONFIG_SCSC_WLAN_DEBUG
hip4_history_record_add(TH, id);
#endif
if (slsi_hip_rx(sdev, skb) < 0) {
SLSI_ERR_NODEV("Ctrl: Error detected slsi_hip_rx\n");
hip4_dump_dbg(hip, m, skb, service);
#ifdef CONFIG_SCSC_SMAPPER
hip4_smapper_free_mapped_skb(skb);
#endif
kfree_skb(skb);
}
consume_ctl_mbulk:
/* Increase index */
idx_r++;
idx_r &= (MAX_NUM - 1);
/* Go through the list of references to free */
while ((ref = to_free[i++])) {
/* Set the number of retries */
retry = FB_NO_SPC_NUM_RET;
/* return to the firmware */
while (hip4_q_add_signal(hip, HIP4_MIF_Q_TH_RFB, ref, service) && (!atomic_read(&hip->hip_priv->closing)) && (retry > 0)) {
SLSI_WARN_NODEV("Ctrl: Not enough space in FB, retry: %d/%d\n", retry, FB_NO_SPC_NUM_RET);
spin_unlock_bh(&hip_priv->rx_lock);
msleep(FB_NO_SPC_SLEEP_MS);
spin_lock_bh(&hip_priv->rx_lock);
retry--;
if (retry == 0)
SLSI_ERR_NODEV("Ctrl: FB has not been freed for %d ms\n", FB_NO_SPC_NUM_RET * FB_NO_SPC_SLEEP_MS);
SCSC_HIP4_SAMPLER_QFULL(hip_priv->minor, HIP4_MIF_Q_TH_RFB);
}
}
hip4_update_index(hip, HIP4_MIF_Q_TH_CTRL, ridx, idx_r);
}
if (no_change)
atomic_inc(&hip->hip_priv->stats.spurious_irqs);
if (!atomic_read(&hip->hip_priv->closing)) {
atomic_set(&hip->hip_priv->watchdog_timer_active, 0);
scsc_service_mifintrbit_bit_unmask(sdev->service, hip->hip_priv->intr_tohost_mul[HIP4_MIF_Q_TH_CTRL]);
}
SCSC_HIP4_SAMPLER_INT_OUT_BH(hip->hip_priv->minor, 1);
if (slsi_wake_lock_active(&hip->hip_priv->hip4_wake_lock_ctrl)) {
slsi_wake_unlock(&hip->hip_priv->hip4_wake_lock_ctrl);
#ifdef CONFIG_SCSC_WLAN_ANDROID
SCSC_WLOG_WAKELOCK(WLOG_LAZY, WL_RELEASED, "hip4_wake_lock_ctrl", WL_REASON_RX);
#endif
}
bh_end_ctrl = ktime_get();
spin_unlock_bh(&hip_priv->rx_lock);
}
static void hip4_irq_handler_ctrl(int irq, void *data)
{
struct slsi_hip4 *hip = (struct slsi_hip4 *)data;
struct slsi_dev *sdev = container_of(hip, struct slsi_dev, hip4_inst);
SCSC_HIP4_SAMPLER_INT(hip->hip_priv->minor, 1);
intr_received_ctrl = ktime_get();
if (!slsi_wake_lock_active(&hip->hip_priv->hip4_wake_lock_ctrl)) {
slsi_wake_lock_timeout(&hip->hip_priv->hip4_wake_lock_ctrl, msecs_to_jiffies(SLSI_HIP_WAKELOCK_TIME_OUT_IN_MS));
#ifdef CONFIG_SCSC_WLAN_ANDROID
SCSC_WLOG_WAKELOCK(WLOG_LAZY, WL_TAKEN, "hip4_wake_lock_ctrl", WL_REASON_RX);
#endif
}
if (!atomic_read(&hip->hip_priv->watchdog_timer_active)) {
atomic_set(&hip->hip_priv->watchdog_timer_active, 1);
mod_timer(&hip->hip_priv->watchdog, jiffies + HZ);
}
set_bit(HIP4_MIF_Q_TH_CTRL, hip->hip_priv->irq_bitmap);
scsc_service_mifintrbit_bit_mask(sdev->service, irq);
if (hip4_system_wq)
schedule_work(&hip->hip_priv->intr_wq_ctrl);
else
queue_work(hip->hip_priv->hip4_workq, &hip->hip_priv->intr_wq_ctrl);
/* Clear interrupt */
scsc_service_mifintrbit_bit_clear(sdev->service, irq);
SCSC_HIP4_SAMPLER_INT_OUT(hip->hip_priv->minor, 1);
}
void hip4_sched_wq_ctrl(struct slsi_hip4 *hip)
{
struct slsi_dev *sdev = container_of(hip, struct slsi_dev, hip4_inst);
if (!hip || !sdev || !sdev->service || !hip->hip_priv)
return;
if (atomic_read(&hip->hip_priv->closing))
return;
hip4_dump_dbg(hip, NULL, NULL, sdev->service);
if (!slsi_wake_lock_active(&hip->hip_priv->hip4_wake_lock_ctrl)) {
slsi_wake_lock_timeout(&hip->hip_priv->hip4_wake_lock_ctrl, msecs_to_jiffies(SLSI_HIP_WAKELOCK_TIME_OUT_IN_MS));
#ifdef CONFIG_SCSC_WLAN_ANDROID
SCSC_WLOG_WAKELOCK(WLOG_LAZY, WL_TAKEN, "hip4_wake_lock_ctrl", WL_REASON_RX);
#endif
}
SLSI_DBG1(sdev, SLSI_HIP, "Trigger wq for skipped ctrl BH\n");
if (hip4_system_wq)
schedule_work(&hip->hip_priv->intr_wq_ctrl);
else
if(!queue_work(hip->hip_priv->hip4_workq, &hip->hip_priv->intr_wq_ctrl))
SLSI_DBG1(sdev, SLSI_HIP, "hip4_wq_ctrl is already scheduled\n");
}
static int hip4_napi_poll(struct napi_struct *napi, int budget)
{
struct hip4_priv *hip_priv = container_of(napi, struct hip4_priv, napi);
struct slsi_hip4 *hip;
struct hip4_hip_control *ctrl;
struct scsc_service *service;
struct slsi_dev *sdev;
#ifdef CONFIG_SCSC_WLAN_DEBUG
int id;
#endif
u8 idx_r;
u8 idx_w;
scsc_mifram_ref ref;
void *mem;
struct mbulk *m;
u8 retry;
u8 todo = 0;
int work_done = 0;
spin_lock_bh(&in_napi_context);
if (!hip_priv || !hip_priv->hip) {
SLSI_ERR_NODEV("hip_priv or hip_priv->hip is Null\n");
spin_unlock_bh(&in_napi_context);
return 0;
}
hip = hip_priv->hip;
if (!hip || !hip->hip_priv) {
SLSI_ERR_NODEV("either hip or hip->hip_priv is Null\n");
spin_unlock_bh(&in_napi_context);
return 0;
}
ctrl = hip->hip_control;
if (!ctrl) {
SLSI_ERR_NODEV("hip->hip_control is Null\n");
spin_unlock_bh(&in_napi_context);
return 0;
}
sdev = container_of(hip, struct slsi_dev, hip4_inst);
if (!sdev || !sdev->service) {
SLSI_ERR_NODEV("sdev or sdev->service is Null\n");
spin_unlock_bh(&in_napi_context);
return 0;
}
if (atomic_read(&sdev->hip.hip_state) != SLSI_HIP_STATE_STARTED) {
napi_complete_done(napi, 0);
spin_unlock_bh(&in_napi_context);
return 0;
}
spin_lock_bh(&hip_priv->rx_lock);
SCSC_HIP4_SAMPLER_INT_BH(hip->hip_priv->minor, 0);
if (ktime_compare(bh_init_data, bh_end_data) <= 0) {
bh_init_data = ktime_get();
if (!atomic_read(&hip->hip_priv->closing))
atomic_set(&hip->hip_priv->watchdog_timer_active, 0);
}
clear_bit(HIP4_MIF_Q_TH_DAT, hip->hip_priv->irq_bitmap);
idx_r = hip4_read_index(hip, HIP4_MIF_Q_TH_DAT, ridx);
idx_w = hip4_read_index(hip, HIP4_MIF_Q_TH_DAT, widx);
service = sdev->service;
if (idx_r == idx_w) {
SLSI_DBG3(sdev, SLSI_RX, "nothing to do, NAPI Complete\n");
hip->hip_priv->napi_rx_full_cnt = 0;
hip_priv->napi_rx_saturated = 0;
bh_end_data = ktime_get();
napi_complete_done(napi, 0);
if (!atomic_read(&hip->hip_priv->closing)) {
/* Nothing more to drain, unmask interrupt */
scsc_service_mifintrbit_bit_unmask(sdev->service, hip->hip_priv->intr_tohost_mul[HIP4_MIF_Q_TH_DAT]);
}
if (slsi_wake_lock_active(&hip->hip_priv->hip4_wake_lock_data)) {
slsi_wake_unlock(&hip->hip_priv->hip4_wake_lock_data);
#ifdef CONFIG_SCSC_WLAN_ANDROID
SCSC_WLOG_WAKELOCK(WLOG_LAZY, WL_RELEASED, "hip4_wake_lock_data", WL_REASON_RX);
#endif
}
goto end;
}
#ifdef CONFIG_SCSC_WLAN_HIP4_PROFILING
if (idx_r != idx_w) {
SCSC_HIP4_SAMPLER_Q(hip_priv->minor, HIP4_MIF_Q_TH_DAT, ridx, idx_r, 1);
SCSC_HIP4_SAMPLER_Q(hip_priv->minor, HIP4_MIF_Q_TH_DAT, widx, idx_w, 1);
}
#endif
todo = ((idx_w - idx_r) & 0xff);
SLSI_DBG3(sdev, SLSI_RX, "todo:%hhu\n", todo);
/* check if Rx queue is saturating and if so move to performance mode */
if (!napi_select_cpu && !hip_priv->napi_perf_mode && !hip_priv->napi_rx_saturated) {
if (todo > hip4_napi_num_rx_pkts)
{
if (++hip_priv->napi_rx_full_cnt >= hip4_napi_num_rx_full) {
SLSI_INFO(sdev, "Rx queue saturating.. move to performance mode\n");
hip_priv->napi_rx_saturated = 1;
/* signal to traffic monitor to notify clients */
slsi_traffic_mon_override(sdev);
}
} else {
hip_priv->napi_rx_full_cnt = 0;
}
}
while (idx_r != idx_w) {
struct sk_buff *skb;
/* TODO: currently the max number to be freed is 2. In future
* implementations (i.e. AMPDU) this number may be bigger
*/
/* list of mbulks to be freed */
scsc_mifram_ref to_free[MBULK_MAX_CHAIN + 1] = { 0 };
u8 i = 0;
/* Catch-up with idx_w */
ref = ctrl->q[HIP4_MIF_Q_TH_DAT].array[idx_r];
#ifdef CONFIG_SCSC_WLAN_HIP4_PROFILING
SCSC_HIP4_SAMPLER_QREF(hip_priv->minor, ref, HIP4_MIF_Q_TH_DAT);
#endif
mem = scsc_mx_service_mif_addr_to_ptr(service, ref);
m = (struct mbulk *)(mem);
skb = hip4_mbulk_to_skb(service, hip_priv, m, to_free, true);
if (!skb) {
SLSI_ERR_NODEV("Dat: Error parsing or allocating skb\n");
hip4_dump_dbg(hip, m, skb, service);
goto consume_dat_mbulk;
}
if (m->flag & MBULK_F_WAKEUP) {
SLSI_INFO(sdev, "WIFI wakeup by DATA frame:\n");
#ifdef CONFIG_SCSC_WLAN_DEBUG
SCSC_BIN_TAG_INFO(BINARY, skb->data, skb->len > 128 ? 128 : skb->len);
#else
SCSC_BIN_TAG_INFO(BINARY, fapi_get_data(skb), fapi_get_datalen(skb) > 54 ? 54 : fapi_get_datalen(skb));
#endif
slsi_skb_cb_get(skb)->wakeup = true;
}
#ifdef CONFIG_SCSC_WLAN_DEBUG
id = fapi_get_sigid(skb);
hip4_history_record_add(TH, id);
#endif
if (slsi_hip_rx(sdev, skb) < 0) {
SLSI_ERR_NODEV("Dat: Error detected slsi_hip_rx\n");
hip4_dump_dbg(hip, m, skb, service);
#ifdef CONFIG_SCSC_SMAPPER
hip4_smapper_free_mapped_skb(skb);
#endif
kfree_skb(skb);
}
consume_dat_mbulk:
/* Increase index */
idx_r++;
idx_r &= (MAX_NUM - 1);
while ((ref = to_free[i++])) {
/* Set the number of retries */
retry = FB_NO_SPC_NUM_RET;
while (hip4_q_add_signal(hip, HIP4_MIF_Q_TH_RFB, ref, service) && (!atomic_read(&hip->hip_priv->closing)) && (retry > 0)) {
SLSI_WARN_NODEV("Dat: Not enough space in FB, retry: %d/%d\n", retry, FB_NO_SPC_NUM_RET);
udelay(FB_NO_SPC_DELAY_US);
retry--;
if (retry == 0)
SLSI_ERR_NODEV("Dat: FB has not been freed for %d us\n", FB_NO_SPC_NUM_RET * FB_NO_SPC_DELAY_US);
#ifdef CONFIG_SCSC_WLAN_HIP4_PROFILING
SCSC_HIP4_SAMPLER_QFULL(hip_priv->minor, HIP4_MIF_Q_TH_RFB);
#endif
}
}
work_done++;
if (budget == work_done) {
/* We have consumed all the bugdet */
break;
}
}
hip4_update_index(hip, HIP4_MIF_Q_TH_DAT, ridx, idx_r);
if (work_done < budget) {
SLSI_DBG3(sdev, SLSI_RX, "NAPI complete (work_done:%d)\n", work_done);
bh_end_data = ktime_get();
hip->hip_priv->napi_rx_full_cnt = 0;
hip_priv->napi_rx_saturated = 0;
napi_complete_done(napi, work_done);
if (!atomic_read(&hip->hip_priv->closing)) {
/* Nothing more to drain, unmask interrupt */
scsc_service_mifintrbit_bit_unmask(sdev->service, hip->hip_priv->intr_tohost_mul[HIP4_MIF_Q_TH_DAT]);
}
if (slsi_wake_lock_active(&hip->hip_priv->hip4_wake_lock_data)) {
slsi_wake_unlock(&hip->hip_priv->hip4_wake_lock_data);
#ifdef CONFIG_SCSC_WLAN_ANDROID
SCSC_WLOG_WAKELOCK(WLOG_LAZY, WL_RELEASED, "hip4_wake_lock_data", WL_REASON_RX);
#endif
}
}
end:
SLSI_DBG3(sdev, SLSI_RX, "work done:%d\n", work_done);
SCSC_HIP4_SAMPLER_INT_OUT_BH(hip->hip_priv->minor, 0);
spin_unlock_bh(&hip_priv->rx_lock);
spin_unlock_bh(&in_napi_context);
return work_done;
}
static void hip4_irq_data_napi_switch_work(struct work_struct *work)
{
struct hip4_priv *hip_priv = container_of(work, struct hip4_priv, intr_wq_napi_cpu_switch);
local_bh_disable();
napi_schedule(&hip_priv->napi);
local_bh_enable();
}
static void hip4_irq_handler_dat(int irq, void *data)
{
struct slsi_hip4 *hip = (struct slsi_hip4 *)data;
struct slsi_dev *sdev = container_of(hip, struct slsi_dev, hip4_inst);
unsigned long flags;
if (!hip || !sdev || !sdev->service || !hip->hip_priv)
return;
SCSC_HIP4_SAMPLER_INT(hip->hip_priv->minor, 0);
intr_received_data = ktime_get();
if (!slsi_wake_lock_active(&hip->hip_priv->hip4_wake_lock_data)) {
slsi_wake_lock_timeout(&hip->hip_priv->hip4_wake_lock_data, msecs_to_jiffies(SLSI_HIP_WAKELOCK_TIME_OUT_IN_MS));
#ifdef CONFIG_SCSC_WLAN_ANDROID
SCSC_WLOG_WAKELOCK(WLOG_LAZY, WL_TAKEN, "hip4_wake_lock_data", WL_REASON_RX);
#endif
}
if (!atomic_read(&hip->hip_priv->watchdog_timer_active)) {
atomic_set(&hip->hip_priv->watchdog_timer_active, 1);
mod_timer(&hip->hip_priv->watchdog, jiffies + HZ);
}
set_bit(HIP4_MIF_Q_TH_DAT, hip->hip_priv->irq_bitmap);
/* Mask interrupt to avoid interrupt storm and let BH run */
scsc_service_mifintrbit_bit_mask(sdev->service, hip->hip_priv->intr_tohost_mul[HIP4_MIF_Q_TH_DAT]);
spin_lock_irqsave(&hip->hip_priv->napi_cpu_lock, flags);
if (test_bit(SLSI_HIP_NAPI_STATE_ENABLED, &hip->hip_priv->napi_state)) {
if (napi_select_cpu && (napi_select_cpu != smp_processor_id()) && cpu_online(napi_select_cpu))
/* queue work on system_wq. Do not use hip4_workq as
* it is single thread wq and WQ_UNBOUND wouldnt be
* set. What it means? its not garunteed to run on
* intended CPU if wq is created as single threaded
* wq.
*/
schedule_work_on(napi_select_cpu, &hip->hip_priv->intr_wq_napi_cpu_switch);
else
napi_schedule(&hip->hip_priv->napi);
scsc_service_mifintrbit_bit_clear(sdev->service, hip->hip_priv->intr_tohost_mul[HIP4_MIF_Q_TH_DAT]);
}
spin_unlock_irqrestore(&hip->hip_priv->napi_cpu_lock, flags);
SCSC_HIP4_SAMPLER_INT_OUT(hip->hip_priv->minor, 0);
}
#else /* #ifdef CONFIG_SCSC_WLAN_RX_NAPI */
static bool slsi_check_rx_flowcontrol(struct slsi_dev *sdev)
{
struct netdev_vif *ndev_vif;
int qlen = 0;
ndev_vif = netdev_priv(sdev->netdev[SLSI_NET_INDEX_WLAN]);
if (ndev_vif)
qlen = skb_queue_len(&ndev_vif->rx_data.queue);
if (!mutex_trylock(&sdev->netdev_remove_mutex))
goto evaluate;
#if defined(SLSI_NET_INDEX_P2PX_SWLAN)
if (sdev->netdev[SLSI_NET_INDEX_P2PX_SWLAN]) {
ndev_vif = netdev_priv(sdev->netdev[SLSI_NET_INDEX_P2PX_SWLAN]);
if (ndev_vif)
qlen += skb_queue_len(&ndev_vif->rx_data.queue);
}
#elif defined(SLSI_NET_INDEX_P2PX)
if (sdev->netdev[SLSI_NET_INDEX_P2PX]) {
ndev_vif = netdev_priv(sdev->netdev[SLSI_NET_INDEX_P2PX]);
if (ndev_vif)
qlen += skb_queue_len(&ndev_vif->rx_data.queue);
}
#endif
mutex_unlock(&sdev->netdev_remove_mutex);
evaluate:
if (qlen > max_buffered_frames) {
SLSI_DBG1_NODEV(SLSI_HIP, "max qlen reached: %d\n", qlen);
return true;
}
SLSI_DBG3_NODEV(SLSI_HIP, "qlen %d\n", qlen);
return false;
}
/* Worqueue: Lower priority, run in process context. Can run simultaneously on
* different CPUs
*/
static void hip4_wq(struct work_struct *data)
{
struct hip4_priv *hip_priv = container_of(data, struct hip4_priv, intr_wq);
struct slsi_hip4 *hip = hip_priv->hip;
struct hip4_hip_control *ctrl = hip->hip_control;
scsc_mifram_ref ref;
void *mem;
struct mbulk *m;
u8 idx_r;
u8 idx_w;
struct slsi_dev *sdev = container_of(hip, struct slsi_dev, hip4_inst);
struct scsc_service *service;
bool no_change = true;
u8 retry;
u32 packets_total;
#if defined(CONFIG_SCSC_WLAN_HIP4_PROFILING) || defined(CONFIG_SCSC_WLAN_DEBUG)
int id;
#endif
if (!sdev || !sdev->service) {
WARN_ON(1);
return;
}
service = sdev->service;
atomic_set(&hip->hip_priv->in_rx, 1);
hip4_rx_flowcontrol = slsi_check_rx_flowcontrol(sdev);
atomic_set(&hip->hip_priv->in_rx, 2);
spin_lock_bh(&hip_priv->rx_lock);
atomic_set(&hip->hip_priv->in_rx, 3);
bh_init = ktime_get();
#ifdef CONFIG_SCSC_WLAN_DEBUG
/* Compute jitter */
{
u64 jitter;
jitter = ktime_to_ns(ktime_sub(bh_init, intr_received));
if (jitter <= HISTO_1)
histogram_1++;
else if (jitter > HISTO_1 && jitter <= HISTO_2)
histogram_2++;
else if (jitter > HISTO_2 && jitter <= HISTO_3)
histogram_3++;
else if (jitter > HISTO_3 && jitter <= HISTO_4)
histogram_4++;
else if (jitter > HISTO_4 && jitter <= HISTO_5)
histogram_5++;
else
histogram_6++;
if (jitter > max_jitter)
max_jitter = jitter;
}
#endif
idx_r = hip4_read_index(hip, HIP4_MIF_Q_FH_RFB, ridx);
idx_w = hip4_read_index(hip, HIP4_MIF_Q_FH_RFB, widx);
if (idx_r != idx_w) {
no_change = false;
SCSC_HIP4_SAMPLER_Q(hip_priv->minor, HIP4_MIF_Q_FH_RFB, ridx, idx_r, 1);
SCSC_HIP4_SAMPLER_Q(hip_priv->minor, HIP4_MIF_Q_FH_RFB, widx, idx_w, 1);
}
SCSC_HIP4_SAMPLER_INT_BH(hip_priv->minor, 2);
while (idx_r != idx_w) {
struct mbulk *m;
mbulk_colour colour;
ref = ctrl->q[HIP4_MIF_Q_FH_RFB].array[idx_r];
SCSC_HIP4_SAMPLER_QREF(hip_priv->minor, ref, HIP4_MIF_Q_FH_RFB);
#ifdef CONFIG_SCSC_WLAN_DEBUG
hip->hip_priv->stats.q_num_frames[HIP4_MIF_Q_FH_RFB] = hip->hip_priv->stats.q_num_frames[HIP4_MIF_Q_FH_RFB] + 1;
#endif
mem = scsc_mx_service_mif_addr_to_ptr(service, ref);
m = (struct mbulk *)mem;
if (!m) {
SLSI_ERR_NODEV("FB: Mbulk is NULL 0x%x\n", ref);
goto consume_fb_mbulk;
}
/* Account ONLY for data RFB */
if ((m->pid & 0x1) == MBULK_POOL_ID_DATA) {
colour = mbulk_get_colour(MBULK_POOL_ID_DATA, m);
#ifdef CONFIG_SCSC_WLAN_HIP4_PROFILING
SCSC_HIP4_SAMPLER_VIF_PEER(hip->hip_priv->minor,
0,
SLSI_MBULK_COLOUR_GET_VIF(colour),
SLSI_MBULK_COLOUR_GET_PEER_IDX(colour));
/* to profile round-trip */
{
u16 host_tag;
u8 *get_host_tag;
/* This is a nasty way of getting the host_tag without involving mbulk processing
* This hostag value should also be include in the cb descriptor which goes to
* mbulk descriptor (no room left at the moment)
*/
get_host_tag = (u8 *)m;
host_tag = get_host_tag[37] << 8 | get_host_tag[36];
SCSC_HIP4_SAMPLER_PKT_TX_FB(hip->hip_priv->minor, host_tag);
}
#endif
/* Ignore return value */
slsi_hip_tx_done(sdev,
SLSI_MBULK_COLOUR_GET_VIF(colour),
SLSI_MBULK_COLOUR_GET_PEER_IDX(colour),
SLSI_MBULK_COLOUR_GET_AC(colour));
}
mbulk_free_virt_host(m);
consume_fb_mbulk:
/* Increase index */
idx_r++;
idx_r &= (MAX_NUM - 1);
hip4_update_index(hip, HIP4_MIF_Q_FH_RFB, ridx, idx_r);
}
SCSC_HIP4_SAMPLER_INT_OUT_BH(hip_priv->minor, 2);
atomic_set(&hip->hip_priv->in_rx, 4);
idx_r = hip4_read_index(hip, HIP4_MIF_Q_TH_CTRL, ridx);
idx_w = hip4_read_index(hip, HIP4_MIF_Q_TH_CTRL, widx);
if (idx_r != idx_w) {
no_change = false;
SCSC_HIP4_SAMPLER_Q(hip_priv->minor, HIP4_MIF_Q_TH_CTRL, ridx, idx_r, 1);
SCSC_HIP4_SAMPLER_Q(hip_priv->minor, HIP4_MIF_Q_TH_CTRL, widx, idx_w, 1);
}
SCSC_HIP4_SAMPLER_INT_BH(hip_priv->minor, 1);
while (idx_r != idx_w) {
struct sk_buff *skb;
/* TODO: currently the max number to be freed is 2. In future
* implementations (i.e. AMPDU) this number may be bigger
* list of mbulks to be freedi
*/
scsc_mifram_ref to_free[MBULK_MAX_CHAIN + 1] = { 0 };
u8 i = 0;
/* Catch-up with idx_w */
ref = ctrl->q[HIP4_MIF_Q_TH_CTRL].array[idx_r];
SCSC_HIP4_SAMPLER_QREF(hip_priv->minor, ref, HIP4_MIF_Q_TH_CTRL);
#ifdef CONFIG_SCSC_WLAN_DEBUG
hip->hip_priv->stats.q_num_frames[HIP4_MIF_Q_TH_CTRL] = hip->hip_priv->stats.q_num_frames[HIP4_MIF_Q_TH_CTRL] + 1;
#endif
mem = scsc_mx_service_mif_addr_to_ptr(service, ref);
m = (struct mbulk *)(mem);
if (!m) {
SLSI_ERR_NODEV("Ctrl: Mbulk is NULL 0x%x\n", ref);
goto consume_ctl_mbulk;
}
/* Process Control Signal */
skb = hip4_mbulk_to_skb(service, hip_priv, m, to_free, false);
if (!skb) {
SLSI_ERR_NODEV("Ctrl: Error parsing or allocating skb\n");
hip4_dump_dbg(hip, m, skb, service);
goto consume_ctl_mbulk;
}
if (m->flag & MBULK_F_WAKEUP) {
SLSI_INFO(sdev, "WIFI wakeup by MLME frame 0x%x:\n", fapi_get_sigid(skb));
SCSC_BIN_TAG_INFO(BINARY, skb->data, skb->len > 128 ? 128 : skb->len);
slsi_skb_cb_get(skb)->wakeup = true;
}
#if defined(CONFIG_SCSC_WLAN_HIP4_PROFILING) || defined(CONFIG_SCSC_WLAN_DEBUG)
id = fapi_get_sigid(skb);
#endif
#ifdef CONFIG_SCSC_WLAN_HIP4_PROFILING
/* log control signal, not unidata not debug */
if (fapi_is_mlme(skb))
SCSC_HIP4_SAMPLER_SIGNAL_CTRLRX(hip_priv->minor, (id & 0xff00) >> 8, id & 0xff);
#endif
#ifdef CONFIG_SCSC_WLAN_DEBUG
hip4_history_record_add(TH, id);
#endif
if (slsi_hip_rx(sdev, skb) < 0) {
SLSI_ERR_NODEV("Ctrl: Error detected slsi_hip_rx\n");
hip4_dump_dbg(hip, m, skb, service);
#ifdef CONFIG_SCSC_SMAPPER
hip4_smapper_free_mapped_skb(skb);
#endif
kfree_skb(skb);
}
consume_ctl_mbulk:
/* Increase index */
idx_r++;
idx_r &= (MAX_NUM - 1);
/* Go through the list of references to free */
while ((ref = to_free[i++])) {
/* Set the number of retries */
retry = FB_NO_SPC_NUM_RET;
/* return to the firmware */
while (hip4_q_add_signal(hip, HIP4_MIF_Q_TH_RFB, ref, service) && (!atomic_read(&hip->hip_priv->closing)) && retry > 0) {
SLSI_WARN_NODEV("Ctrl: Not enough space in FB, retry: %d/%d\n", retry, FB_NO_SPC_NUM_RET);
spin_unlock_bh(&hip_priv->rx_lock);
msleep(FB_NO_SPC_SLEEP_MS);
spin_lock_bh(&hip_priv->rx_lock);
retry--;
if (retry == 0)
SLSI_ERR_NODEV("Ctrl: FB has not been freed for %d ms\n", FB_NO_SPC_NUM_RET * FB_NO_SPC_SLEEP_MS);
SCSC_HIP4_SAMPLER_QFULL(hip_priv->minor, HIP4_MIF_Q_TH_RFB);
}
}
hip4_update_index(hip, HIP4_MIF_Q_TH_CTRL, ridx, idx_r);
}
SCSC_HIP4_SAMPLER_INT_OUT_BH(hip_priv->minor, 1);
if (hip4_rx_flowcontrol)
goto skip_data_q;
atomic_set(&hip->hip_priv->in_rx, 5);
idx_r = hip4_read_index(hip, HIP4_MIF_Q_TH_DAT, ridx);
idx_w = hip4_read_index(hip, HIP4_MIF_Q_TH_DAT, widx);
if (idx_r != idx_w) {
packets_total = 0;
no_change = false;
SCSC_HIP4_SAMPLER_Q(hip_priv->minor, HIP4_MIF_Q_TH_DAT, ridx, idx_r, 1);
SCSC_HIP4_SAMPLER_Q(hip_priv->minor, HIP4_MIF_Q_TH_DAT, widx, idx_w, 1);
#ifdef CONFIG_SCSC_WLAN_DEBUG
/* Compute DAT histogram */
{
u8 num_packets = (idx_w - idx_r) % 256;
if (num_packets <= HISTO_1_DATA)
histogram_1_data++;
else if (num_packets > HISTO_1_DATA && num_packets <= HISTO_2_DATA)
histogram_2_data++;
else if (num_packets > HISTO_2_DATA && num_packets <= HISTO_3_DATA)
histogram_3_data++;
else if (num_packets > HISTO_3_DATA && num_packets <= HISTO_4_DATA)
histogram_4_data++;
else if (num_packets > HISTO_4_DATA && num_packets <= HISTO_5_DATA)
histogram_5_data++;
else
histogram_6_data++;
if (num_packets > max_data)
max_data = num_packets;
}
#endif
}
SCSC_HIP4_SAMPLER_INT_BH(hip_priv->minor, 0);
while (idx_r != idx_w) {
struct sk_buff *skb;
/* TODO: currently the max number to be freed is 2. In future
* implementations (i.e. AMPDU) this number may be bigger
*/
/* list of mbulks to be freed */
scsc_mifram_ref to_free[MBULK_MAX_CHAIN + 1] = { 0 };
u8 i = 0;
packets_total++;
/* Catch-up with idx_w */
ref = ctrl->q[HIP4_MIF_Q_TH_DAT].array[idx_r];
SCSC_HIP4_SAMPLER_QREF(hip_priv->minor, ref, HIP4_MIF_Q_TH_DAT);
#ifdef CONFIG_SCSC_WLAN_DEBUG
hip->hip_priv->stats.q_num_frames[HIP4_MIF_Q_TH_DAT] = hip->hip_priv->stats.q_num_frames[HIP4_MIF_Q_TH_DAT] + 1;
#endif
mem = scsc_mx_service_mif_addr_to_ptr(service, ref);
m = (struct mbulk *)(mem);
if (!m) {
SLSI_ERR_NODEV("Dat: Mbulk is NULL 0x%x\n", ref);
goto consume_dat_mbulk;
}
skb = hip4_mbulk_to_skb(service, hip_priv, m, to_free, false);
if (!skb) {
SLSI_ERR_NODEV("Dat: Error parsing or allocating skb\n");
hip4_dump_dbg(hip, m, skb, service);
goto consume_dat_mbulk;
}
if (m->flag & MBULK_F_WAKEUP) {
SLSI_INFO(sdev, "WIFI wakeup by DATA frame:\n");
#ifdef CONFIG_SCSC_WLAN_DEBUG
SCSC_BIN_TAG_INFO(BINARY, skb->data, skb->len > 128 ? 128 : skb->len);
#else
SCSC_BIN_TAG_INFO(BINARY, fapi_get_data(skb), fapi_get_datalen(skb) > 54 ? 54 : fapi_get_datalen(skb));
#endif
slsi_skb_cb_get(skb)->wakeup = true;
}
#ifdef CONFIG_SCSC_WLAN_DEBUG
id = fapi_get_sigid(skb);
hip4_history_record_add(TH, id);
#endif
if (slsi_hip_rx(sdev, skb) < 0) {
SLSI_ERR_NODEV("Dat: Error detected slsi_hip_rx\n");
hip4_dump_dbg(hip, m, skb, service);
#ifdef CONFIG_SCSC_SMAPPER
hip4_smapper_free_mapped_skb(skb);
#endif
kfree_skb(skb);
}
consume_dat_mbulk:
/* Increase index */
idx_r++;
idx_r &= (MAX_NUM - 1);
/* Go through the list of references to free */
while ((ref = to_free[i++])) {
/* Set the number of retries */
retry = FB_NO_SPC_NUM_RET;
/* return to the firmware */
while (hip4_q_add_signal(hip, HIP4_MIF_Q_TH_RFB, ref, service) && (!atomic_read(&hip->hip_priv->closing)) && retry > 0) {
SLSI_WARN_NODEV("Dat: Not enough space in FB, retry: %d/%d\n", retry, FB_NO_SPC_NUM_RET);
spin_unlock_bh(&hip_priv->rx_lock);
msleep(FB_NO_SPC_SLEEP_MS);
spin_lock_bh(&hip_priv->rx_lock);
retry--;
if (retry == 0)
SLSI_ERR_NODEV("Dat: FB has not been freed for %d ms\n", FB_NO_SPC_NUM_RET * FB_NO_SPC_SLEEP_MS);
SCSC_HIP4_SAMPLER_QFULL(hip_priv->minor, HIP4_MIF_Q_TH_RFB);
}
}
hip4_update_index(hip, HIP4_MIF_Q_TH_DAT, ridx, idx_r);
/* read again the write index */
if ((idx_r == idx_w) && (packets_total < HIP4_POLLING_MAX_PACKETS)) {
u8 old_idx = idx_w;
idx_w = hip4_read_index(hip, HIP4_MIF_Q_TH_DAT, widx);
if (idx_w != old_idx) {
SCSC_HIP4_SAMPLER_Q(hip_priv->minor, HIP4_MIF_Q_TH_DAT, ridx, idx_r, 1);
SCSC_HIP4_SAMPLER_Q(hip_priv->minor, HIP4_MIF_Q_TH_DAT, widx, idx_w, 1);
}
}
}
SCSC_HIP4_SAMPLER_INT_OUT_BH(hip_priv->minor, 0);
if (no_change)
atomic_inc(&hip->hip_priv->stats.spurious_irqs);
skip_data_q:
if (!atomic_read(&hip->hip_priv->closing)) {
/* Reset status variable. DO THIS BEFORE UNMASKING!!!*/
atomic_set(&hip->hip_priv->watchdog_timer_active, 0);
scsc_service_mifintrbit_bit_unmask(service, hip->hip_priv->intr_tohost);
}
if (slsi_wake_lock_active(&hip->hip_priv->hip4_wake_lock)) {
slsi_wake_unlock(&hip->hip_priv->hip4_wake_lock);
#ifdef CONFIG_SCSC_WLAN_ANDROID
SCSC_WLOG_WAKELOCK(WLOG_LAZY, WL_RELEASED, "hip4_wake_lock", WL_REASON_RX);
#endif
}
bh_end = ktime_get();
atomic_set(&hip->hip_priv->in_rx, 0);
spin_unlock_bh(&hip_priv->rx_lock);
}
/* IRQ handler for hip4. The function runs in Interrupt context, so all the
* asssumptions related to interrupt should be applied (sleep, fast,...)
*/
static void hip4_irq_handler(int irq, void *data)
{
struct slsi_hip4 *hip = (struct slsi_hip4 *)data;
struct slsi_dev *sdev = container_of(hip, struct slsi_dev, hip4_inst);
(void)irq; /* unused */
if (!hip || !sdev || !sdev->service || !hip->hip_priv)
return;
SCSC_HIP4_SAMPLER_INT(hip->hip_priv->minor, 0);
SCSC_HIP4_SAMPLER_INT(hip->hip_priv->minor, 1);
SCSC_HIP4_SAMPLER_INT(hip->hip_priv->minor, 2);
intr_received = ktime_get();
if (!slsi_wake_lock_active(&hip->hip_priv->hip4_wake_lock)) {
slsi_wake_lock_timeout(&hip->hip_priv->hip4_wake_lock, msecs_to_jiffies(SLSI_HIP_WAKELOCK_TIME_OUT_IN_MS));
#ifdef CONFIG_SCSC_WLAN_ANDROID
SCSC_WLOG_WAKELOCK(WLOG_LAZY, WL_TAKEN, "hip4_wake_lock", WL_REASON_RX);
#endif
}
/* if wd timer is active system might be in trouble as it should be
* cleared in the BH. Ignore updating the timer
*/
if (!atomic_read(&hip->hip_priv->watchdog_timer_active)) {
atomic_set(&hip->hip_priv->watchdog_timer_active, 1);
mod_timer(&hip->hip_priv->watchdog, jiffies + HZ);
} else {
SLSI_ERR_NODEV("INT triggered while WDT is active\n");
SLSI_ERR_NODEV("bh_init %lld\n", ktime_to_ns(bh_init));
SLSI_ERR_NODEV("bh_end %lld\n", ktime_to_ns(bh_end));
SLSI_ERR_NODEV("hip4_wq work_busy %d\n", work_busy(&hip->hip_priv->intr_wq));
SLSI_ERR_NODEV("hip4_priv->in_rx %d\n", atomic_read(&hip->hip_priv->in_rx));
}
/* If system is not in suspend, mask interrupt to avoid interrupt storm and let BH run */
if (!atomic_read(&hip->hip_priv->in_suspend)) {
scsc_service_mifintrbit_bit_mask(sdev->service, hip->hip_priv->intr_tohost);
hip->hip_priv->storm_count = 0;
} else if (++hip->hip_priv->storm_count >= MAX_STORM) {
/* A MAX_STORM number of interrupts has been received
* when platform was in suspend. This indicates FW interrupt activity
* that should resume the hip4, so it is safe to mask to avoid
* interrupt storm.
*/
hip->hip_priv->storm_count = 0;
scsc_service_mifintrbit_bit_mask(sdev->service, hip->hip_priv->intr_tohost);
}
atomic_inc(&hip->hip_priv->stats.irqs);
if (hip4_system_wq)
schedule_work(&hip->hip_priv->intr_wq);
else
queue_work(hip->hip_priv->hip4_workq, &hip->hip_priv->intr_wq);
/* Clear interrupt */
scsc_service_mifintrbit_bit_clear(sdev->service, hip->hip_priv->intr_tohost);
SCSC_HIP4_SAMPLER_INT_OUT(hip->hip_priv->minor, 0);
SCSC_HIP4_SAMPLER_INT_OUT(hip->hip_priv->minor, 1);
SCSC_HIP4_SAMPLER_INT_OUT(hip->hip_priv->minor, 2);
}
void hip4_sched_wq(struct slsi_hip4 *hip)
{
struct slsi_dev *sdev = container_of(hip, struct slsi_dev, hip4_inst);
if (!hip || !sdev || !sdev->service || !hip->hip_priv)
return;
if (atomic_read(&hip->hip_priv->closing) || !hip4_rx_flowcontrol)
return;
if (!slsi_wake_lock_active(&hip->hip_priv->hip4_wake_lock)) {
slsi_wake_lock_timeout(&hip->hip_priv->hip4_wake_lock, msecs_to_jiffies(SLSI_HIP_WAKELOCK_TIME_OUT_IN_MS));
#ifdef CONFIG_SCSC_WLAN_ANDROID
SCSC_WLOG_WAKELOCK(WLOG_LAZY, WL_TAKEN, "hip4_wake_lock", WL_REASON_RX);
#endif
}
SLSI_DBG1(sdev, SLSI_HIP, "Trigger wq for skipped data BH\n");
if (hip4_system_wq)
schedule_work(&hip->hip_priv->intr_wq);
else
queue_work(hip->hip_priv->hip4_workq, &hip->hip_priv->intr_wq);
}
#endif
#ifdef CONFIG_SCSC_QOS
static void hip4_pm_qos_work(struct work_struct *data)
{
struct hip4_priv *hip_priv = container_of(data, struct hip4_priv, pm_qos_work);
struct slsi_hip4 *hip = hip_priv->hip;
struct slsi_dev *sdev = container_of(hip, struct slsi_dev, hip4_inst);
u8 state;
if (!sdev || !sdev->service) {
WARN_ON(1);
return;
}
SLSI_DBG1(sdev, SLSI_HIP, "update to state %d\n", hip_priv->pm_qos_state);
spin_lock_bh(&hip_priv->pm_qos_lock);
state = hip_priv->pm_qos_state;
spin_unlock_bh(&hip_priv->pm_qos_lock);
scsc_service_pm_qos_update_request(sdev->service, state);
}
static void hip4_traffic_monitor_cb(void *client_ctx, u32 state, u32 tput_tx, u32 tput_rx)
{
struct slsi_hip4 *hip = (struct slsi_hip4 *)client_ctx;
struct slsi_dev *sdev = container_of(hip, struct slsi_dev, hip4_inst);
u8 state_before;
if (!sdev)
return;
spin_lock_bh(&hip->hip_priv->pm_qos_lock);
state_before = hip->hip_priv->pm_qos_state;
SLSI_DBG1(sdev, SLSI_HIP, "state:%u --> event (state:%u, tput_tx:%u bps, tput_rx:%u bps)\n", state_before, state, tput_tx, tput_rx);
if (state == TRAFFIC_MON_CLIENT_STATE_HIGH || state == TRAFFIC_MON_CLIENT_STATE_OVERRIDE)
hip->hip_priv->pm_qos_state = SCSC_QOS_MAX;
else if (state == TRAFFIC_MON_CLIENT_STATE_MID)
hip->hip_priv->pm_qos_state = SCSC_QOS_MED;
else
hip->hip_priv->pm_qos_state = SCSC_QOS_DISABLED;
spin_unlock_bh(&hip->hip_priv->pm_qos_lock);
if (state_before != hip->hip_priv->pm_qos_state)
schedule_work(&hip->hip_priv->pm_qos_work);
}
#endif
#if IS_ENABLED(CONFIG_SCSC_LOGRING)
static void hip4_traffic_monitor_logring_cb(void *client_ctx, u32 state, u32 tput_tx, u32 tput_rx)
{
struct hip4_priv *hip_priv = (struct hip4_priv *)client_ctx;
struct slsi_hip4 *hip = hip_priv->hip;
struct slsi_dev *sdev = container_of(hip, struct slsi_dev, hip4_inst);
if (!sdev)
return;
SLSI_DBG1(sdev, SLSI_HIP, "event (state:%u, tput_tx:%u bps, tput_rx:%u bps)\n", state, tput_tx, tput_rx);
if (state == TRAFFIC_MON_CLIENT_STATE_HIGH || state == TRAFFIC_MON_CLIENT_STATE_MID || state == TRAFFIC_MON_CLIENT_STATE_OVERRIDE) {
if (hip4_dynamic_logging)
scsc_logring_enable(false);
} else {
scsc_logring_enable(true);
}
}
#endif
int hip4_init(struct slsi_hip4 *hip)
{
void *hip_ptr;
struct hip4_hip_control *hip_control;
struct scsc_service *service;
struct slsi_dev *sdev = container_of(hip, struct slsi_dev, hip4_inst);
scsc_mifram_ref ref, ref_scoreboard;
int i;
int ret;
u32 total_mib_len;
u32 mib_file_offset;
#ifdef CONFIG_SCSC_WLAN_RX_NAPI
struct net_device *dev;
#endif
if (!sdev || !sdev->service)
return -EINVAL;
hip->hip_priv = kzalloc(sizeof(*hip->hip_priv), GFP_ATOMIC);
if (!hip->hip_priv)
return -ENOMEM;
SLSI_INFO_NODEV("HIP4_WLAN_CONFIG_SIZE (%d)\n", HIP4_WLAN_CONFIG_SIZE);
SLSI_INFO_NODEV("HIP4_WLAN_MIB_SIZE (%d)\n", HIP4_WLAN_MIB_SIZE);
SLSI_INFO_NODEV("HIP4_WLAN_TX_DAT_SIZE (%d)\n", HIP4_WLAN_TX_DAT_SIZE);
SLSI_INFO_NODEV("HIP4_WLAN_TX_CTL_SIZE (%d)\n", HIP4_WLAN_TX_CTL_SIZE);
SLSI_INFO_NODEV("HIP4_WLAN_RX_SIZE (%d)\n", HIP4_WLAN_RX_SIZE);
SLSI_INFO_NODEV("HIP4_WLAN_TOTAL_MEM (%d)\n", HIP4_WLAN_TOTAL_MEM);
SLSI_INFO_NODEV("HIP4_DAT_SLOTS (%d)\n", HIP4_DAT_SLOTS);
SLSI_INFO_NODEV("HIP4_CTL_SLOTS (%d)\n", HIP4_CTL_SLOTS);
#ifdef CONFIG_SCSC_WLAN_DEBUG
memset(&hip->hip_priv->stats, 0, sizeof(hip->hip_priv->stats));
hip->hip_priv->stats.start = ktime_get();
hip->hip_priv->stats.procfs_dir = proc_mkdir("driver/hip4", NULL);
if (hip->hip_priv->stats.procfs_dir) {
proc_create_data("info", S_IRUSR | S_IRGRP,
hip->hip_priv->stats.procfs_dir, &hip4_procfs_stats_fops, hip);
proc_create_data("history", S_IRUSR | S_IRGRP,
hip->hip_priv->stats.procfs_dir, &hip4_procfs_history_fops, hip);
proc_create_data("jitter", S_IRUSR | S_IRGRP,
hip->hip_priv->stats.procfs_dir, &hip4_procfs_jitter_fops, hip);
}
hip->hip_priv->minor = hip4_sampler_register_hip(sdev->maxwell_core);
if (hip->hip_priv->minor < SCSC_HIP4_INTERFACES) {
SLSI_DBG1_NODEV(SLSI_HIP, "registered with minor %d\n", hip->hip_priv->minor);
sdev->minor_prof = hip->hip_priv->minor;
} else {
SLSI_DBG1_NODEV(SLSI_HIP, "hip4_sampler is not enabled\n");
}
#endif
/* Used in the workqueue */
hip->hip_priv->hip = hip;
service = sdev->service;
hip->hip_priv->host_pool_id_dat = MBULK_POOL_ID_DATA;
hip->hip_priv->host_pool_id_ctl = MBULK_POOL_ID_CTRL;
/* hip_ref contains the reference of the start of shared memory allocated for WLAN */
/* hip_ptr is the kernel address of hip_ref*/
hip_ptr = scsc_mx_service_mif_addr_to_ptr(service, hip->hip_ref);
#ifdef CONFIG_SCSC_WLAN_DEBUG
/* Configure mbulk allocator - Data QUEUES */
ret = mbulk_pool_add(MBULK_POOL_ID_DATA, hip_ptr + HIP4_WLAN_TX_DAT_OFFSET,
hip_ptr + HIP4_WLAN_TX_DAT_OFFSET + HIP4_WLAN_TX_DAT_SIZE,
(HIP4_WLAN_TX_DAT_SIZE / HIP4_DAT_SLOTS) - sizeof(struct mbulk), 5,
hip->hip_priv->minor);
if (ret)
return ret;
/* Configure mbulk allocator - Control QUEUES */
ret = mbulk_pool_add(MBULK_POOL_ID_CTRL, hip_ptr + HIP4_WLAN_TX_CTL_OFFSET,
hip_ptr + HIP4_WLAN_TX_CTL_OFFSET + HIP4_WLAN_TX_CTL_SIZE,
(HIP4_WLAN_TX_CTL_SIZE / HIP4_CTL_SLOTS) - sizeof(struct mbulk), 0,
hip->hip_priv->minor);
if (ret)
return ret;
#else
/* Configure mbulk allocator - Data QUEUES */
ret = mbulk_pool_add(MBULK_POOL_ID_DATA, hip_ptr + HIP4_WLAN_TX_DAT_OFFSET,
hip_ptr + HIP4_WLAN_TX_DAT_OFFSET + HIP4_WLAN_TX_DAT_SIZE,
(HIP4_WLAN_TX_DAT_SIZE / HIP4_DAT_SLOTS) - sizeof(struct mbulk), 5);
if (ret)
return ret;
/* Configure mbulk allocator - Control QUEUES */
ret = mbulk_pool_add(MBULK_POOL_ID_CTRL, hip_ptr + HIP4_WLAN_TX_CTL_OFFSET,
hip_ptr + HIP4_WLAN_TX_CTL_OFFSET + HIP4_WLAN_TX_CTL_SIZE,
(HIP4_WLAN_TX_CTL_SIZE / HIP4_CTL_SLOTS) - sizeof(struct mbulk), 0);
if (ret)
return ret;
#endif
/* Reset hip_control table */
memset(hip_ptr, 0, sizeof(struct hip4_hip_control));
/* Reset Sample q values sending 0xff */
SCSC_HIP4_SAMPLER_RESET(hip->hip_priv->minor);
/***** VERSION 4 *******/
/* TOHOST Handler allocator */
#ifdef CONFIG_SCSC_WLAN_RX_NAPI
/* Q0 FH CTRL */
hip->hip_priv->intr_tohost_mul[HIP4_MIF_Q_FH_CTRL] = MIF_NO_IRQ;
/* Q1 FH DATA */
hip->hip_priv->intr_tohost_mul[HIP4_MIF_Q_FH_DAT] = MIF_NO_IRQ;
/* Q5 TH RFB */
hip->hip_priv->intr_tohost_mul[HIP4_MIF_Q_TH_RFB] = MIF_NO_IRQ;
/* Q2 FH FB */
hip->hip_priv->intr_tohost_mul[HIP4_MIF_Q_FH_RFB] =
scsc_service_mifintrbit_register_tohost(service, hip4_irq_handler_fb, hip);
scsc_service_mifintrbit_bit_mask(service, hip->hip_priv->intr_tohost_mul[HIP4_MIF_Q_FH_RFB]);
/* Q3 TH CTRL */
hip->hip_priv->intr_tohost_mul[HIP4_MIF_Q_TH_CTRL] =
scsc_service_mifintrbit_register_tohost(service, hip4_irq_handler_ctrl, hip);
scsc_service_mifintrbit_bit_mask(service, hip->hip_priv->intr_tohost_mul[HIP4_MIF_Q_TH_CTRL]);
/* Q4 TH DAT */
hip->hip_priv->intr_tohost_mul[HIP4_MIF_Q_TH_DAT] =
scsc_service_mifintrbit_register_tohost(service, hip4_irq_handler_dat, hip);
scsc_service_mifintrbit_bit_mask(service, hip->hip_priv->intr_tohost_mul[HIP4_MIF_Q_TH_DAT]);
rcu_read_lock();
/* one NAPI instance is ok for multiple netdev devices */
dev = slsi_get_netdev_rcu(sdev, SLSI_NET_INDEX_WLAN);
if (!dev) {
SLSI_ERR(sdev, "netdev No longer exists\n");
rcu_read_unlock();
return -EINVAL;
}
netif_napi_add(dev, &hip->hip_priv->napi, hip4_napi_poll, NAPI_POLL_WEIGHT);
rcu_read_unlock();
#else
/* TOHOST Handler allocator */
hip->hip_priv->intr_tohost =
scsc_service_mifintrbit_register_tohost(service, hip4_irq_handler, hip);
/* Mask the interrupt to prevent intr been kicked during start */
scsc_service_mifintrbit_bit_mask(service, hip->hip_priv->intr_tohost);
#endif
/* FROMHOST Handler allocator */
hip->hip_priv->intr_fromhost =
scsc_service_mifintrbit_alloc_fromhost(service, SCSC_MIFINTR_TARGET_R4);
/* Get hip_control pointer on shared memory */
hip_control = (struct hip4_hip_control *)(hip_ptr +
HIP4_WLAN_CONFIG_OFFSET);
/* Initialize scoreboard */
if (scsc_mx_service_mif_ptr_to_addr(service, &hip_control->scoreboard, &ref_scoreboard))
return -EFAULT;
/* Calculate total space used by wlan*.hcf files */
for (i = 0, total_mib_len = 0; i < SLSI_WLAN_MAX_MIB_FILE; i++)
total_mib_len += sdev->mib[i].mib_len;
/* Copy MIB content in shared memory if any */
/* Clear the area to avoid picking up old values */
memset(hip_ptr + HIP4_WLAN_MIB_OFFSET, 0, HIP4_WLAN_MIB_SIZE);
if (total_mib_len > HIP4_WLAN_MIB_SIZE) {
SLSI_ERR_NODEV("MIB size (%d), is bigger than the MIB AREA (%d). Aborting memcpy\n", total_mib_len, HIP4_WLAN_MIB_SIZE);
hip_control->config_v4.mib_loc = 0;
hip_control->config_v4.mib_sz = 0;
hip_control->config_v5.mib_loc = 0;
hip_control->config_v5.mib_sz = 0;
total_mib_len = 0;
} else if (total_mib_len) {
SLSI_INFO_NODEV("Loading MIB into shared memory, size (%d)\n", total_mib_len);
/* Load each MIB file into shared DRAM region */
for (i = 0, mib_file_offset = 0;
i < SLSI_WLAN_MAX_MIB_FILE;
i++) {
SLSI_INFO_NODEV("Loading MIB %d into shared memory, offset (%d), size (%d), total (%d)\n", i, mib_file_offset, sdev->mib[i].mib_len, total_mib_len);
if (sdev->mib[i].mib_len) {
memcpy((u8 *)hip_ptr + HIP4_WLAN_MIB_OFFSET + mib_file_offset, sdev->mib[i].mib_data, sdev->mib[i].mib_len);
mib_file_offset += sdev->mib[i].mib_len;
}
}
hip_control->config_v4.mib_loc = hip->hip_ref + HIP4_WLAN_MIB_OFFSET;
hip_control->config_v4.mib_sz = total_mib_len;
hip_control->config_v5.mib_loc = hip->hip_ref + HIP4_WLAN_MIB_OFFSET;
hip_control->config_v5.mib_sz = total_mib_len;
} else {
hip_control->config_v4.mib_loc = 0;
hip_control->config_v4.mib_sz = 0;
hip_control->config_v5.mib_loc = 0;
hip_control->config_v5.mib_sz = 0;
}
/* Initialize hip_control table for version 4 */
/***** VERSION 4 *******/
hip_control->config_v4.magic_number = 0xcaba0401;
hip_control->config_v4.hip_config_ver = 4;
hip_control->config_v4.config_len = sizeof(struct hip4_hip_config_version_4);
hip_control->config_v4.host_cache_line = 64;
hip_control->config_v4.host_buf_loc = hip->hip_ref + HIP4_WLAN_TX_OFFSET;
hip_control->config_v4.host_buf_sz = HIP4_WLAN_TX_SIZE;
hip_control->config_v4.fw_buf_loc = hip->hip_ref + HIP4_WLAN_RX_OFFSET;
hip_control->config_v4.fw_buf_sz = HIP4_WLAN_RX_SIZE;
hip_control->config_v4.log_config_loc = 0;
hip_control->config_v4.mif_fh_int_n = hip->hip_priv->intr_fromhost;
for (i = 0; i < MIF_HIP_CFG_Q_NUM; i++) {
#ifdef CONFIG_SCSC_WLAN_RX_NAPI
hip_control->config_v4.mif_th_int_n[i] = hip->hip_priv->intr_tohost_mul[i];
#else
hip_control->config_v4.mif_th_int_n[i] = hip->hip_priv->intr_tohost;
#endif
}
hip_control->config_v4.scbrd_loc = (u32)ref_scoreboard;
hip_control->config_v4.q_num = 6;
hip_control->config_v4.q_len = 256;
hip_control->config_v4.q_idx_sz = 1;
/* Initialize q relative positions */
for (i = 0; i < MIF_HIP_CFG_Q_NUM; i++) {
if (scsc_mx_service_mif_ptr_to_addr(service, &hip_control->q[i].array, &ref))
return -EFAULT;
hip_control->config_v4.q_loc[i] = (u32)ref;
}
/***** END VERSION 4 *******/
/* Initialize hip_control table for version 5 */
/***** VERSION 5 *******/
hip_control->config_v5.magic_number = 0xcaba0401;
hip_control->config_v5.hip_config_ver = 5;
hip_control->config_v5.config_len = sizeof(struct hip4_hip_config_version_5);
hip_control->config_v5.host_cache_line = 64;
hip_control->config_v5.host_buf_loc = hip->hip_ref + HIP4_WLAN_TX_OFFSET;
hip_control->config_v5.host_buf_sz = HIP4_WLAN_TX_SIZE;
hip_control->config_v5.fw_buf_loc = hip->hip_ref + HIP4_WLAN_RX_OFFSET;
hip_control->config_v5.fw_buf_sz = HIP4_WLAN_RX_SIZE;
hip_control->config_v5.log_config_loc = 0;
hip_control->config_v5.mif_fh_int_n = hip->hip_priv->intr_fromhost;
hip_control->config_v5.mif_th_int_n = hip->hip_priv->intr_tohost;
hip_control->config_v5.q_num = 6;
hip_control->config_v5.q_len = 256;
hip_control->config_v5.q_idx_sz = 1;
hip_control->config_v5.scbrd_loc = (u32)ref_scoreboard; /* scoreborad location */
/* Initialize q relative positions */
for (i = 0; i < MIF_HIP_CFG_Q_NUM; i++) {
if (scsc_mx_service_mif_ptr_to_addr(service, &hip_control->q[i].array, &ref))
return -EFAULT;
hip_control->config_v5.q_loc[i] = (u32)ref;
}
/***** END VERSION 5 *******/
/* Initialzie hip_init configuration */
hip_control->init.magic_number = 0xcaaa0400;
if (scsc_mx_service_mif_ptr_to_addr(service, &hip_control->config_v4, &ref))
return -EFAULT;
hip_control->init.version_a_ref = ref;
if (scsc_mx_service_mif_ptr_to_addr(service, &hip_control->config_v5, &ref))
return -EFAULT;
hip_control->init.version_b_ref = ref;
/* End hip_init configuration */
hip->hip_control = hip_control;
hip->hip_priv->scbrd_base = &hip_control->scoreboard;
spin_lock_init(&hip->hip_priv->rx_lock);
atomic_set(&hip->hip_priv->in_rx, 0);
spin_lock_init(&hip->hip_priv->tx_lock);
atomic_set(&hip->hip_priv->in_tx, 0);
#ifdef CONFIG_SCSC_WLAN_RX_NAPI
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5, 4, 0))
slsi_wake_lock_init(NULL, &hip->hip_priv->hip4_wake_lock_tx.ws, "hip4_wake_lock_tx");
slsi_wake_lock_init(NULL, &hip->hip_priv->hip4_wake_lock_ctrl.ws, "hip4_wake_lock_ctrl");
slsi_wake_lock_init(NULL, &hip->hip_priv->hip4_wake_lock_data.ws, "hip4_wake_lock_data");
#else
slsi_wake_lock_init(&hip->hip_priv->hip4_wake_lock_tx, WAKE_LOCK_SUSPEND, "hip4_wake_lock_tx");
slsi_wake_lock_init(&hip->hip_priv->hip4_wake_lock_ctrl, WAKE_LOCK_SUSPEND, "hip4_wake_lock_ctrl");
slsi_wake_lock_init(&hip->hip_priv->hip4_wake_lock_data, WAKE_LOCK_SUSPEND, "hip4_wake_lock_data");
#endif
#endif
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5, 4, 0))
slsi_wake_lock_init(NULL, &hip->hip_priv->hip4_wake_lock.ws, "hip4_wake_lock");
#else
slsi_wake_lock_init(&hip->hip_priv->hip4_wake_lock, WAKE_LOCK_SUSPEND, "hip4_wake_lock");
#endif
/* Init work structs */
hip->hip_priv->hip4_workq = create_singlethread_workqueue("hip4_work");
if (!hip->hip_priv->hip4_workq) {
SLSI_ERR_NODEV("Error creating singlethread_workqueue\n");
return -ENOMEM;
}
#ifdef CONFIG_SCSC_WLAN_RX_NAPI
spin_lock_init(&hip->hip_priv->napi_cpu_lock);
INIT_WORK(&hip->hip_priv->intr_wq_napi_cpu_switch, hip4_irq_data_napi_switch_work);
INIT_WORK(&hip->hip_priv->intr_wq_ctrl, hip4_wq_ctrl);
tasklet_init(&hip->hip_priv->intr_tl_fb, hip4_tl_fb, (unsigned long)hip);
#else
INIT_WORK(&hip->hip_priv->intr_wq, hip4_wq);
#endif
rwlock_init(&hip->hip_priv->rw_scoreboard);
/* Setup watchdog timer */
atomic_set(&hip->hip_priv->watchdog_timer_active, 0);
spin_lock_init(&hip->hip_priv->watchdog_lock);
#if KERNEL_VERSION(4, 15, 0) <= LINUX_VERSION_CODE
timer_setup(&hip->hip_priv->watchdog, hip4_watchdog, 0);
#else
setup_timer(&hip->hip_priv->watchdog, hip4_watchdog, (unsigned long)hip);
#endif
atomic_set(&hip->hip_priv->gmod, HIP4_DAT_SLOTS);
atomic_set(&hip->hip_priv->gactive, 1);
spin_lock_init(&hip->hip_priv->gbot_lock);
hip->hip_priv->saturated = 0;
#ifdef CONFIG_SCSC_SMAPPER
/* Init SMAPPER */
if (hip4_smapper_enable) {
if (hip4_smapper_init(sdev, hip)) {
SLSI_ERR_NODEV("Error on hip4_smapper init\n");
hip4_smapper_is_enabled = false;
} else {
hip4_smapper_is_enabled = true;
}
}
#endif
#ifdef CONFIG_SCSC_QOS
/* setup for PM QoS */
spin_lock_init(&hip->hip_priv->pm_qos_lock);
if (hip4_qos_enable) {
if (!scsc_service_pm_qos_add_request(service, SCSC_QOS_DISABLED)) {
/* register to traffic monitor for throughput events */
if (slsi_traffic_mon_client_register(sdev, hip, TRAFFIC_MON_CLIENT_MODE_EVENTS, (hip4_qos_med_tput_in_mbps * 1000 * 1000), (hip4_qos_max_tput_in_mbps * 1000 * 1000), hip4_traffic_monitor_cb))
SLSI_WARN(sdev, "failed to add PM QoS client to traffic monitor\n");
else
INIT_WORK(&hip->hip_priv->pm_qos_work, hip4_pm_qos_work);
} else {
SLSI_WARN(sdev, "failed to add PM QoS request\n");
}
}
#endif
#if IS_ENABLED(CONFIG_SCSC_LOGRING)
/* register to traffic monitor for dynamic logring logging */
if (slsi_traffic_mon_client_register(sdev, hip->hip_priv, TRAFFIC_MON_CLIENT_MODE_EVENTS, 0, (hip4_dynamic_logging_tput_in_mbps * 1000 * 1000), hip4_traffic_monitor_logring_cb))
SLSI_WARN(sdev, "failed to add Logring client to traffic monitor\n");
#endif
return 0;
}
/**
* This function returns the number of free slots available to
* transmit control packet.
*/
int hip4_free_ctrl_slots_count(struct slsi_hip4 *hip)
{
return mbulk_pool_get_free_count(MBULK_POOL_ID_CTRL);
}
/**
* This function is in charge to transmit a frame through the HIP.
* It does NOT take ownership of the SKB unless it successfully transmit it;
* as a consequence skb is NOT freed on error.
* We return ENOSPC on queue related troubles in order to trigger upper
* layers of kernel to requeue/retry.
* We free ONLY locally-allocated stuff.
*
* the vif_index, peer_index, priority fields are valid for data packets only
*/
int scsc_wifi_transmit_frame(struct slsi_hip4 *hip, struct sk_buff *skb, bool ctrl_packet, u8 vif_index, u8 peer_index, u8 priority)
{
struct scsc_service *service;
scsc_mifram_ref offset;
struct mbulk *m;
mbulk_colour colour = 0;
struct slsi_dev *sdev = container_of(hip, struct slsi_dev, hip4_inst);
struct fapi_signal_header *fapi_header;
int ret = 0;
if (!hip || !sdev || !sdev->service || !skb || !hip->hip_priv)
return -EINVAL;
spin_lock_bh(&hip->hip_priv->tx_lock);
atomic_set(&hip->hip_priv->in_tx, 1);
#ifdef CONFIG_SCSC_WLAN_RX_NAPI
if (!slsi_wake_lock_active(&hip->hip_priv->hip4_wake_lock_tx)) {
slsi_wake_lock_timeout(&hip->hip_priv->hip4_wake_lock_tx, msecs_to_jiffies(SLSI_HIP_WAKELOCK_TIME_OUT_IN_MS));
#ifdef CONFIG_SCSC_WLAN_ANDROID
SCSC_WLOG_WAKELOCK(WLOG_LAZY, WL_TAKEN, "hip4_wake_lock_tx", WL_REASON_TX);
#endif
}
#else
if (!slsi_wake_lock_active(&hip->hip_priv->hip4_wake_lock)) {
slsi_wake_lock_timeout(&hip->hip_priv->hip4_wake_lock, msecs_to_jiffies(SLSI_HIP_WAKELOCK_TIME_OUT_IN_MS));
#ifdef CONFIG_SCSC_WLAN_ANDROID
SCSC_WLOG_WAKELOCK(WLOG_LAZY, WL_TAKEN, "hip4_wake_lock", WL_REASON_TX);
#endif
}
#endif
service = sdev->service;
fapi_header = (struct fapi_signal_header *)skb->data;
if (fapi_is_ma(skb))
SLSI_MBULK_COLOUR_SET(colour, vif_index, peer_index, priority);
m = hip4_skb_to_mbulk(hip->hip_priv, skb, ctrl_packet, colour);
if (!m) {
SCSC_HIP4_SAMPLER_MFULL(hip->hip_priv->minor);
ret = -ENOSPC;
SLSI_ERR_NODEV("mbulk is NULL\n");
goto error;
}
if (scsc_mx_service_mif_ptr_to_addr(service, m, &offset) < 0) {
mbulk_free_virt_host(m);
ret = -EFAULT;
SLSI_ERR_NODEV("Incorrect reference memory\n");
goto error;
}
if (hip4_q_add_signal(hip, ctrl_packet ? HIP4_MIF_Q_FH_CTRL : HIP4_MIF_Q_FH_DAT, offset, service)) {
SCSC_HIP4_SAMPLER_QFULL(hip->hip_priv->minor, ctrl_packet ? HIP4_MIF_Q_FH_CTRL : HIP4_MIF_Q_FH_DAT);
mbulk_free_virt_host(m);
ret = -ENOSPC;
SLSI_ERR_NODEV("No space\n");
goto error;
}
#ifdef CONFIG_SCSC_WLAN_HIP4_PROFILING
if (ctrl_packet) {
/* Record control signal */
SCSC_HIP4_SAMPLER_SIGNAL_CTRLTX(hip->hip_priv->minor, (fapi_header->id & 0xff00) >> 8, fapi_header->id & 0xff);
} else {
SCSC_HIP4_SAMPLER_PKT_TX_HIP4(hip->hip_priv->minor, fapi_get_u16(skb, u.ma_unitdata_req.host_tag));
SCSC_HIP4_SAMPLER_VIF_PEER(hip->hip_priv->minor, 1, vif_index, peer_index);
}
#endif
#ifdef CONFIG_SCSC_WLAN_DEBUG
hip4_history_record_add(FH, fapi_header->id);
#endif
/* Here we push a copy of the bare skb TRANSMITTED data also to the logring
* as a binary record. Note that bypassing UDI subsystem as a whole
* means we are losing:
* UDI filtering / UDI Header INFO / UDI QueuesFrames Throttling /
* UDI Skb Asynchronous processing
* We keep separated DATA/CTRL paths.
*/
if (ctrl_packet)
SCSC_BIN_TAG_DEBUG(BIN_WIFI_CTRL_TX, skb->data, skb_headlen(skb));
else
SCSC_BIN_TAG_DEBUG(BIN_WIFI_DATA_TX, skb->data, skb_headlen(skb));
/* slsi_log_clients_log_signal_fast: skb is copied to all the log clients */
slsi_log_clients_log_signal_fast(sdev, &sdev->log_clients, skb, SLSI_LOG_DIRECTION_FROM_HOST);
consume_skb(skb);
atomic_set(&hip->hip_priv->in_tx, 0);
spin_unlock_bh(&hip->hip_priv->tx_lock);
return 0;
error:
#ifdef CONFIG_SCSC_WLAN_RX_NAPI
if (slsi_wake_lock_active(&hip->hip_priv->hip4_wake_lock_tx)) {
slsi_wake_unlock(&hip->hip_priv->hip4_wake_lock_tx);
#ifdef CONFIG_SCSC_WLAN_ANDROID
SCSC_WLOG_WAKELOCK(WLOG_LAZY, WL_RELEASED, "hip4_wake_lock_tx", WL_REASON_TX);
#endif
}
#else
if (slsi_wake_lock_active(&hip->hip_priv->hip4_wake_lock)) {
slsi_wake_unlock(&hip->hip_priv->hip4_wake_lock);
#ifdef CONFIG_SCSC_WLAN_ANDROID
SCSC_WLOG_WAKELOCK(WLOG_LAZY, WL_RELEASED, "hip4_wake_lock", WL_REASON_TX);
#endif
}
#endif
atomic_set(&hip->hip_priv->in_tx, 0);
spin_unlock_bh(&hip->hip_priv->tx_lock);
return ret;
}
/* HIP4 has been initialize, setup with values
* provided by FW
*/
int hip4_setup(struct slsi_hip4 *hip)
{
struct slsi_dev *sdev = container_of(hip, struct slsi_dev, hip4_inst);
struct scsc_service *service;
u32 conf_hip4_ver = 0;
if (!sdev || !sdev->service)
return -EIO;
if (atomic_read(&sdev->hip.hip_state) != SLSI_HIP_STATE_STARTED)
return -EIO;
service = sdev->service;
/* Get the Version reported by the FW */
conf_hip4_ver = scsc_wifi_get_hip_config_version(&hip->hip_control->init);
/* Check if the version is supported. And get the index */
/* This is hardcoded and may change in future versions */
if (conf_hip4_ver != 4 && conf_hip4_ver != 5) {
SLSI_ERR_NODEV("FW HIP config version %d not supported\n", conf_hip4_ver);
return -EIO;
}
if (conf_hip4_ver == 4) {
hip->hip_priv->unidat_req_headroom =
scsc_wifi_get_hip_config_u8(&hip->hip_control, unidat_req_headroom, 4);
hip->hip_priv->unidat_req_tailroom =
scsc_wifi_get_hip_config_u8(&hip->hip_control, unidat_req_tailroom, 4);
hip->hip_priv->version = 4;
#ifdef CONFIG_SCSC_WLAN_RX_NAPI
hip->hip_priv->napi_rx_full_cnt = 0;
hip->hip_priv->napi_rx_saturated = 0;
if (!test_and_set_bit(SLSI_HIP_NAPI_STATE_ENABLED, &hip->hip_priv->napi_state))
napi_enable(&hip->hip_priv->napi);
#endif
} else {
/* version 5 */
hip->hip_priv->unidat_req_headroom =
scsc_wifi_get_hip_config_u8(&hip->hip_control, unidat_req_headroom, 5);
hip->hip_priv->unidat_req_tailroom =
scsc_wifi_get_hip_config_u8(&hip->hip_control, unidat_req_tailroom, 5);
hip->hip_priv->version = 5;
}
/* Unmask interrupts - now host should handle them */
atomic_set(&hip->hip_priv->stats.irqs, 0);
atomic_set(&hip->hip_priv->stats.spurious_irqs, 0);
atomic_set(&sdev->debug_inds, 0);
atomic_set(&hip->hip_priv->closing, 0);
#ifdef CONFIG_SCSC_WLAN_RX_NAPI
scsc_service_mifintrbit_bit_unmask(service, hip->hip_priv->intr_tohost_mul[HIP4_MIF_Q_FH_RFB]);
scsc_service_mifintrbit_bit_unmask(service, hip->hip_priv->intr_tohost_mul[HIP4_MIF_Q_TH_CTRL]);
scsc_service_mifintrbit_bit_unmask(service, hip->hip_priv->intr_tohost_mul[HIP4_MIF_Q_TH_DAT]);
#else
scsc_service_mifintrbit_bit_unmask(service, hip->hip_priv->intr_tohost);
#endif
return 0;
}
/* On suspend hip4 needs to ensure that TH interrupts *are* unmasked */
void hip4_suspend(struct slsi_hip4 *hip)
{
struct slsi_dev *sdev;
struct scsc_service *service;
u8 i;
if (!hip || !hip->hip_priv)
return;
sdev = container_of(hip, struct slsi_dev, hip4_inst);
if (!sdev || !sdev->service)
return;
if (atomic_read(&sdev->hip.hip_state) != SLSI_HIP_STATE_STARTED)
return;
service = sdev->service;
slsi_log_client_msg(sdev, UDI_DRV_SUSPEND_IND, 0, NULL);
SCSC_HIP4_SAMPLER_SUSPEND(hip->hip_priv->minor);
atomic_set(&hip->hip_priv->in_suspend, 1);
#ifdef CONFIG_SCSC_WLAN_RX_NAPI
for (i = 0; i < MIF_HIP_CFG_Q_NUM; i++)
if (hip->hip_priv->intr_tohost_mul[i] != MIF_NO_IRQ)
scsc_service_mifintrbit_bit_unmask(service, hip->hip_priv->intr_tohost_mul[i]);
#else
scsc_service_mifintrbit_bit_unmask(service, hip->hip_priv->intr_tohost);
#endif
}
void hip4_resume(struct slsi_hip4 *hip)
{
struct slsi_dev *sdev;
struct scsc_service *service;
u8 i;
if (!hip || !hip->hip_priv)
return;
sdev = container_of(hip, struct slsi_dev, hip4_inst);
if (!sdev || !sdev->service)
return;
if (atomic_read(&sdev->hip.hip_state) != SLSI_HIP_STATE_STARTED)
return;
service = sdev->service;
#ifdef CONFIG_SCSC_WLAN_RX_NAPI
for (i = 0; i < MIF_HIP_CFG_Q_NUM; i++)
if (hip->hip_priv->intr_tohost_mul[i] != MIF_NO_IRQ)
scsc_service_mifintrbit_bit_unmask(service, hip->hip_priv->intr_tohost_mul[i]);
#else
scsc_service_mifintrbit_bit_unmask(service, hip->hip_priv->intr_tohost);
#endif
slsi_log_client_msg(sdev, UDI_DRV_RESUME_IND, 0, NULL);
SCSC_HIP4_SAMPLER_RESUME(hip->hip_priv->minor);
atomic_set(&hip->hip_priv->in_suspend, 0);
}
void hip4_freeze(struct slsi_hip4 *hip)
{
struct slsi_dev *sdev;
struct scsc_service *service;
u8 i;
if (!hip || !hip->hip_priv)
return;
sdev = container_of(hip, struct slsi_dev, hip4_inst);
if (!sdev || !sdev->service)
return;
if (atomic_read(&sdev->hip.hip_state) != SLSI_HIP_STATE_STARTED)
return;
service = sdev->service;
closing = ktime_get();
atomic_set(&hip->hip_priv->closing, 1);
hip4_dump_dbg(hip, NULL, NULL, service);
#ifdef CONFIG_SCSC_WLAN_RX_NAPI
for (i = 0; i < MIF_HIP_CFG_Q_NUM; i++)
if (hip->hip_priv->intr_tohost_mul[i] != MIF_NO_IRQ)
scsc_service_mifintrbit_bit_mask(service, hip->hip_priv->intr_tohost_mul[i]);
if (test_and_clear_bit(SLSI_HIP_NAPI_STATE_ENABLED, &hip->hip_priv->napi_state))
napi_disable(&hip->hip_priv->napi);
hip->hip_priv->napi_rx_full_cnt = 0;
hip->hip_priv->napi_rx_saturated = 0;
cancel_work_sync(&hip->hip_priv->intr_wq_napi_cpu_switch);
cancel_work_sync(&hip->hip_priv->intr_wq_ctrl);
tasklet_kill(&hip->hip_priv->intr_tl_fb);
#else
scsc_service_mifintrbit_bit_mask(service, hip->hip_priv->intr_tohost);
cancel_work_sync(&hip->hip_priv->intr_wq);
#endif
flush_workqueue(hip->hip_priv->hip4_workq);
destroy_workqueue(hip->hip_priv->hip4_workq);
atomic_set(&hip->hip_priv->watchdog_timer_active, 0);
/* Deactive the wd timer prior its expiration */
del_timer_sync(&hip->hip_priv->watchdog);
}
void hip4_deinit(struct slsi_hip4 *hip)
{
struct slsi_dev *sdev;
struct scsc_service *service;
#ifdef CONFIG_SCSC_WLAN_RX_NAPI
u8 i;
#endif
if (!hip || !hip->hip_priv)
return;
sdev = container_of(hip, struct slsi_dev, hip4_inst);
if (!sdev || !sdev->service)
return;
service = sdev->service;
#if IS_ENABLED(CONFIG_SCSC_LOGRING)
slsi_traffic_mon_client_unregister(sdev, hip->hip_priv);
/* Reenable logring in case was disabled */
scsc_logring_enable(true);
#endif
#ifdef CONFIG_SCSC_QOS
/* de-register with traffic monitor */
slsi_traffic_mon_client_unregister(sdev, hip);
scsc_service_pm_qos_remove_request(service);
#endif
#ifdef CONFIG_SCSC_SMAPPER
/* Init SMAPPER */
if (hip4_smapper_is_enabled) {
hip4_smapper_is_enabled = false;
hip4_smapper_deinit(sdev, hip);
}
#endif
closing = ktime_get();
atomic_set(&hip->hip_priv->closing, 1);
#ifdef CONFIG_SCSC_WLAN_RX_NAPI
for (i = 0; i < MIF_HIP_CFG_Q_NUM; i++)
if (hip->hip_priv->intr_tohost_mul[i] != MIF_NO_IRQ)
scsc_service_mifintrbit_bit_mask(service, hip->hip_priv->intr_tohost_mul[i]);
if (test_and_clear_bit(SLSI_HIP_NAPI_STATE_ENABLED, &hip->hip_priv->napi_state))
napi_disable(&hip->hip_priv->napi);
hip->hip_priv->napi_rx_full_cnt = 0;
hip->hip_priv->napi_rx_saturated = 0;
cancel_work_sync(&hip->hip_priv->intr_wq_napi_cpu_switch);
cancel_work_sync(&hip->hip_priv->intr_wq_ctrl);
tasklet_kill(&hip->hip_priv->intr_tl_fb);
for (i = 0; i < MIF_HIP_CFG_Q_NUM; i++)
if (hip->hip_priv->intr_tohost_mul[i] != MIF_NO_IRQ)
scsc_service_mifintrbit_unregister_tohost(service, hip->hip_priv->intr_tohost_mul[i]);
netif_napi_del(&hip->hip_priv->napi);
#else
scsc_service_mifintrbit_bit_mask(service, hip->hip_priv->intr_tohost);
cancel_work_sync(&hip->hip_priv->intr_wq);
scsc_service_mifintrbit_unregister_tohost(service, hip->hip_priv->intr_tohost);
#endif
flush_workqueue(hip->hip_priv->hip4_workq);
destroy_workqueue(hip->hip_priv->hip4_workq);
scsc_service_mifintrbit_free_fromhost(service, hip->hip_priv->intr_fromhost, SCSC_MIFINTR_TARGET_R4);
#ifdef CONFIG_SCSC_WLAN_RX_NAPI
slsi_wake_lock_destroy(&hip->hip_priv->hip4_wake_lock_tx);
slsi_wake_lock_destroy(&hip->hip_priv->hip4_wake_lock_ctrl);
slsi_wake_lock_destroy(&hip->hip_priv->hip4_wake_lock_data);
#endif
slsi_wake_lock_destroy(&hip->hip_priv->hip4_wake_lock);
/* If we get to that point with rx_lock/tx_lock claimed, trigger BUG() */
WARN_ON(atomic_read(&hip->hip_priv->in_tx));
WARN_ON(atomic_read(&hip->hip_priv->in_rx));
atomic_set(&hip->hip_priv->watchdog_timer_active, 0);
/* Deactive the wd timer prior its expiration */
del_timer_sync(&hip->hip_priv->watchdog);
#ifdef CONFIG_SCSC_WLAN_DEBUG
if (hip->hip_priv->stats.procfs_dir) {
remove_proc_entry("driver/hip4/jitter", NULL);
remove_proc_entry("driver/hip4/info", NULL);
remove_proc_entry("driver/hip4/history", NULL);
remove_proc_entry("driver/hip4", NULL);
}
#endif
spin_lock_bh(&in_napi_context);
kfree(hip->hip_priv);
hip->hip_priv = NULL;
spin_unlock_bh(&in_napi_context);
/* remove the pools */
mbulk_pool_remove(MBULK_POOL_ID_DATA);
mbulk_pool_remove(MBULK_POOL_ID_CTRL);
}