337 lines
8.6 KiB
C
337 lines
8.6 KiB
C
/**
|
|
* Copyright (c) 2014 Redpine Signals Inc.
|
|
*
|
|
* Permission to use, copy, modify, and/or distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/firmware.h>
|
|
#include "rsi_mgmt.h"
|
|
#include "rsi_common.h"
|
|
#include "rsi_hal.h"
|
|
|
|
u32 rsi_zone_enabled = /* INFO_ZONE |
|
|
INIT_ZONE |
|
|
MGMT_TX_ZONE |
|
|
MGMT_RX_ZONE |
|
|
DATA_TX_ZONE |
|
|
DATA_RX_ZONE |
|
|
FSM_ZONE |
|
|
ISR_ZONE | */
|
|
ERR_ZONE |
|
|
0;
|
|
EXPORT_SYMBOL_GPL(rsi_zone_enabled);
|
|
|
|
/**
|
|
* rsi_dbg() - This function outputs informational messages.
|
|
* @zone: Zone of interest for output message.
|
|
* @fmt: printf-style format for output message.
|
|
*
|
|
* Return: none
|
|
*/
|
|
void rsi_dbg(u32 zone, const char *fmt, ...)
|
|
{
|
|
struct va_format vaf;
|
|
va_list args;
|
|
|
|
va_start(args, fmt);
|
|
|
|
vaf.fmt = fmt;
|
|
vaf.va = &args;
|
|
|
|
if (zone & rsi_zone_enabled)
|
|
pr_info("%pV", &vaf);
|
|
va_end(args);
|
|
}
|
|
EXPORT_SYMBOL_GPL(rsi_dbg);
|
|
|
|
static char *opmode_str(int oper_mode)
|
|
{
|
|
switch (oper_mode) {
|
|
case RSI_DEV_OPMODE_WIFI_ALONE:
|
|
return "Wi-Fi alone";
|
|
}
|
|
|
|
return "Unknown";
|
|
}
|
|
|
|
void rsi_print_version(struct rsi_common *common)
|
|
{
|
|
rsi_dbg(ERR_ZONE, "================================================\n");
|
|
rsi_dbg(ERR_ZONE, "================ RSI Version Info ==============\n");
|
|
rsi_dbg(ERR_ZONE, "================================================\n");
|
|
rsi_dbg(ERR_ZONE, "FW Version\t: %d.%d.%d\n",
|
|
common->lmac_ver.major, common->lmac_ver.minor,
|
|
common->lmac_ver.release_num);
|
|
rsi_dbg(ERR_ZONE, "Operating mode\t: %d [%s]",
|
|
common->oper_mode, opmode_str(common->oper_mode));
|
|
rsi_dbg(ERR_ZONE, "Firmware file\t: %s", common->priv->fw_file_name);
|
|
rsi_dbg(ERR_ZONE, "================================================\n");
|
|
}
|
|
|
|
/**
|
|
* rsi_prepare_skb() - This function prepares the skb.
|
|
* @common: Pointer to the driver private structure.
|
|
* @buffer: Pointer to the packet data.
|
|
* @pkt_len: Length of the packet.
|
|
* @extended_desc: Extended descriptor.
|
|
*
|
|
* Return: Successfully skb.
|
|
*/
|
|
static struct sk_buff *rsi_prepare_skb(struct rsi_common *common,
|
|
u8 *buffer,
|
|
u32 pkt_len,
|
|
u8 extended_desc)
|
|
{
|
|
struct ieee80211_tx_info *info;
|
|
struct skb_info *rx_params;
|
|
struct sk_buff *skb = NULL;
|
|
u8 payload_offset;
|
|
struct ieee80211_vif *vif;
|
|
struct ieee80211_hdr *wh;
|
|
|
|
if (WARN(!pkt_len, "%s: Dummy pkt received", __func__))
|
|
return NULL;
|
|
|
|
if (pkt_len > (RSI_RCV_BUFFER_LEN * 4)) {
|
|
rsi_dbg(ERR_ZONE, "%s: Pkt size > max rx buf size %d\n",
|
|
__func__, pkt_len);
|
|
pkt_len = RSI_RCV_BUFFER_LEN * 4;
|
|
}
|
|
|
|
pkt_len -= extended_desc;
|
|
skb = dev_alloc_skb(pkt_len + FRAME_DESC_SZ);
|
|
if (skb == NULL)
|
|
return NULL;
|
|
|
|
payload_offset = (extended_desc + FRAME_DESC_SZ);
|
|
skb_put(skb, pkt_len);
|
|
memcpy((skb->data), (buffer + payload_offset), skb->len);
|
|
wh = (struct ieee80211_hdr *)skb->data;
|
|
vif = rsi_get_vif(common->priv, wh->addr1);
|
|
|
|
info = IEEE80211_SKB_CB(skb);
|
|
rx_params = (struct skb_info *)info->driver_data;
|
|
rx_params->rssi = rsi_get_rssi(buffer);
|
|
rx_params->channel = rsi_get_connected_channel(vif);
|
|
|
|
return skb;
|
|
}
|
|
|
|
/**
|
|
* rsi_read_pkt() - This function reads frames from the card.
|
|
* @common: Pointer to the driver private structure.
|
|
* @rcv_pkt_len: Received pkt length. In case of USB it is 0.
|
|
*
|
|
* Return: 0 on success, -1 on failure.
|
|
*/
|
|
int rsi_read_pkt(struct rsi_common *common, s32 rcv_pkt_len)
|
|
{
|
|
u8 *frame_desc = NULL, extended_desc = 0;
|
|
u32 index, length = 0, queueno = 0;
|
|
u16 actual_length = 0, offset;
|
|
struct sk_buff *skb = NULL;
|
|
|
|
index = 0;
|
|
do {
|
|
frame_desc = &common->rx_data_pkt[index];
|
|
actual_length = *(u16 *)&frame_desc[0];
|
|
offset = *(u16 *)&frame_desc[2];
|
|
|
|
queueno = rsi_get_queueno(frame_desc, offset);
|
|
length = rsi_get_length(frame_desc, offset);
|
|
|
|
/* Extended descriptor is valid for WLAN queues only */
|
|
if (queueno == RSI_WIFI_DATA_Q || queueno == RSI_WIFI_MGMT_Q)
|
|
extended_desc = rsi_get_extended_desc(frame_desc,
|
|
offset);
|
|
|
|
switch (queueno) {
|
|
case RSI_COEX_Q:
|
|
rsi_mgmt_pkt_recv(common, (frame_desc + offset));
|
|
break;
|
|
case RSI_WIFI_DATA_Q:
|
|
skb = rsi_prepare_skb(common,
|
|
(frame_desc + offset),
|
|
length,
|
|
extended_desc);
|
|
if (skb == NULL)
|
|
goto fail;
|
|
|
|
rsi_indicate_pkt_to_os(common, skb);
|
|
break;
|
|
|
|
case RSI_WIFI_MGMT_Q:
|
|
rsi_mgmt_pkt_recv(common, (frame_desc + offset));
|
|
break;
|
|
|
|
default:
|
|
rsi_dbg(ERR_ZONE, "%s: pkt from invalid queue: %d\n",
|
|
__func__, queueno);
|
|
goto fail;
|
|
}
|
|
|
|
index += actual_length;
|
|
rcv_pkt_len -= actual_length;
|
|
} while (rcv_pkt_len > 0);
|
|
|
|
return 0;
|
|
fail:
|
|
return -EINVAL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(rsi_read_pkt);
|
|
|
|
/**
|
|
* rsi_tx_scheduler_thread() - This function is a kernel thread to send the
|
|
* packets to the device.
|
|
* @common: Pointer to the driver private structure.
|
|
*
|
|
* Return: None.
|
|
*/
|
|
static void rsi_tx_scheduler_thread(struct rsi_common *common)
|
|
{
|
|
struct rsi_hw *adapter = common->priv;
|
|
u32 timeout = EVENT_WAIT_FOREVER;
|
|
|
|
do {
|
|
if (adapter->determine_event_timeout)
|
|
timeout = adapter->determine_event_timeout(adapter);
|
|
rsi_wait_event(&common->tx_thread.event, timeout);
|
|
rsi_reset_event(&common->tx_thread.event);
|
|
|
|
if (common->init_done)
|
|
rsi_core_qos_processor(common);
|
|
} while (atomic_read(&common->tx_thread.thread_done) == 0);
|
|
complete_and_exit(&common->tx_thread.completion, 0);
|
|
}
|
|
|
|
/**
|
|
* rsi_91x_init() - This function initializes os interface operations.
|
|
* @void: Void.
|
|
*
|
|
* Return: Pointer to the adapter structure on success, NULL on failure .
|
|
*/
|
|
struct rsi_hw *rsi_91x_init(void)
|
|
{
|
|
struct rsi_hw *adapter = NULL;
|
|
struct rsi_common *common = NULL;
|
|
u8 ii = 0;
|
|
|
|
adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
|
|
if (!adapter)
|
|
return NULL;
|
|
|
|
adapter->priv = kzalloc(sizeof(*common), GFP_KERNEL);
|
|
if (adapter->priv == NULL) {
|
|
rsi_dbg(ERR_ZONE, "%s: Failed in allocation of memory\n",
|
|
__func__);
|
|
kfree(adapter);
|
|
return NULL;
|
|
} else {
|
|
common = adapter->priv;
|
|
common->priv = adapter;
|
|
}
|
|
|
|
for (ii = 0; ii < NUM_SOFT_QUEUES; ii++)
|
|
skb_queue_head_init(&common->tx_queue[ii]);
|
|
|
|
rsi_init_event(&common->tx_thread.event);
|
|
mutex_init(&common->mutex);
|
|
mutex_init(&common->tx_lock);
|
|
mutex_init(&common->rx_lock);
|
|
|
|
if (rsi_create_kthread(common,
|
|
&common->tx_thread,
|
|
rsi_tx_scheduler_thread,
|
|
"Tx-Thread")) {
|
|
rsi_dbg(ERR_ZONE, "%s: Unable to init tx thrd\n", __func__);
|
|
goto err;
|
|
}
|
|
|
|
rsi_default_ps_params(adapter);
|
|
spin_lock_init(&adapter->ps_lock);
|
|
timer_setup(&common->roc_timer, rsi_roc_timeout, 0);
|
|
init_completion(&common->wlan_init_completion);
|
|
common->init_done = true;
|
|
return adapter;
|
|
|
|
err:
|
|
kfree(common);
|
|
kfree(adapter);
|
|
return NULL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(rsi_91x_init);
|
|
|
|
/**
|
|
* rsi_91x_deinit() - This function de-intializes os intf operations.
|
|
* @adapter: Pointer to the adapter structure.
|
|
*
|
|
* Return: None.
|
|
*/
|
|
void rsi_91x_deinit(struct rsi_hw *adapter)
|
|
{
|
|
struct rsi_common *common = adapter->priv;
|
|
u8 ii;
|
|
|
|
rsi_dbg(INFO_ZONE, "%s: Performing deinit os ops\n", __func__);
|
|
|
|
rsi_kill_thread(&common->tx_thread);
|
|
|
|
for (ii = 0; ii < NUM_SOFT_QUEUES; ii++)
|
|
skb_queue_purge(&common->tx_queue[ii]);
|
|
|
|
common->init_done = false;
|
|
|
|
kfree(common);
|
|
kfree(adapter->rsi_dev);
|
|
kfree(adapter);
|
|
}
|
|
EXPORT_SYMBOL_GPL(rsi_91x_deinit);
|
|
|
|
/**
|
|
* rsi_91x_hal_module_init() - This function is invoked when the module is
|
|
* loaded into the kernel.
|
|
* It registers the client driver.
|
|
* @void: Void.
|
|
*
|
|
* Return: 0 on success, -1 on failure.
|
|
*/
|
|
static int rsi_91x_hal_module_init(void)
|
|
{
|
|
rsi_dbg(INIT_ZONE, "%s: Module init called\n", __func__);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* rsi_91x_hal_module_exit() - This function is called at the time of
|
|
* removing/unloading the module.
|
|
* It unregisters the client driver.
|
|
* @void: Void.
|
|
*
|
|
* Return: None.
|
|
*/
|
|
static void rsi_91x_hal_module_exit(void)
|
|
{
|
|
rsi_dbg(INIT_ZONE, "%s: Module exit called\n", __func__);
|
|
}
|
|
|
|
module_init(rsi_91x_hal_module_init);
|
|
module_exit(rsi_91x_hal_module_exit);
|
|
MODULE_AUTHOR("Redpine Signals Inc");
|
|
MODULE_DESCRIPTION("Station driver for RSI 91x devices");
|
|
MODULE_SUPPORTED_DEVICE("RSI-91x");
|
|
MODULE_VERSION("0.1");
|
|
MODULE_LICENSE("Dual BSD/GPL");
|