From: Jahnavi Meher <jahnavi.meher@xxxxxxxxxxxxxxxxxx>
This patch has the loading of firmware, SDbus related functions
and the module initialization related functions.
Signed-off-by: Jahnavi Meher <jahnavi.meher@xxxxxxxxxxxxxxxxxx>
---
Makefile | 9
rsi_91x_dev_ops.c | 661 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
rsi_91x_main.c | 94 +++++++
3 files changed, 764 insertions(+)
diff -uprN a/drivers/net/wireless/rsi/91x/Makefile b/drivers/net/wireless/rsi/91x/Makefile
--- a/drivers/net/wireless/rsi/91x/Makefile 1970-01-01 05:30:00.000000000 +0530
+++ b/drivers/net/wireless/rsi/91x/Makefile 2014-01-30 16:25:13.800523737 +0530
@@ -0,0 +1,9 @@
+ifeq ($(CONFIG_RSI_USB), y)
+ ccflags-y =-DUSE_USB_INTF
+else
+ ccflags-y =-DUSE_SDIO_INTF
+endif
+ccflags-y += -Iinclude/
+rsi_91x-y := rsi_91x_mac80211.o rsi_91x_mgmt.o rsi_91x_pkt.o \
+ rsi_91x_dev_ops.o rsi_91x_main.o
+obj-$(CONFIG_RSI_91x) := rsi_91x.o
diff -uprN a/drivers/net/wireless/rsi/91x/rsi_91x_dev_ops.c b/drivers/net/wireless/rsi/91x/rsi_91x_dev_ops.c
--- a/drivers/net/wireless/rsi/91x/rsi_91x_dev_ops.c 1970-01-01 05:30:00.000000000 +0530
+++ b/drivers/net/wireless/rsi/91x/rsi_91x_dev_ops.c 2014-01-30 16:25:13.803524118 +0530
@@ -0,0 +1,661 @@
+/**
+ * @file rsi_91x_dev_ops.c
+ * @author
+ * @version 1.0
+ *
+ * @section LICENSE
+ * Copyright (c) 2013 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.
+ *
+ * @section DESCRIPTION
+ *
+ * The file contains the initialization part of the SDBus driver and Loading of
+ * the TA firmware.
+ */
+
+#include <linux/firmware.h>
+#include "../include/rsi_main.h"
+#include "../include/rsi_hw_intf.h"
+#include "../include/rsi_device_ops.h"
+
+static struct ta_metadata {
+ unsigned char *name;
+ unsigned int address;
+} metadata[] = {
+ {"rsi_91x.fw", 0x00000000},
+};
+
+/**
+ * This function prepares the skb.
+ *
+ * @param common Pointer to the driver private structure.
+ * @param buffer Pointer to the packet data.
+ * @param pkt_len Length of the packet.
+ * @param extended_desc Extended descriptor.
+ * @return Successfully created netbuf control block.
+ */
+static struct sk_buff *rsi_prepare_skb(struct rsi_common *common,
+ unsigned char *buffer,
+ unsigned int pkt_len,
+ unsigned char extended_desc)
+{
+ struct ieee80211_tx_info *info;
+ struct skb_info *rx_params;
+ struct sk_buff *skb = NULL;
+ unsigned char payload_offset;
+
+ if (!pkt_len) {
+ rsi_dbg(ERR_ZONE, "%s: Dummy pkt has come in\n", __func__);
+ return NULL;
+ }
+
+ if (pkt_len > (RSI_RCV_BUFFER_LEN * 4)) {
+ rsi_dbg(ERR_ZONE, "%s: Toooo big packet %d\n", __func__,
+ pkt_len);
+ pkt_len = RSI_RCV_BUFFER_LEN * 4;
+ }
+
+ if ((pkt_len < RSI_HEADER_SIZE) || (pkt_len < MIN_802_11_HDR_LEN)) {
+ rsi_dbg(ERR_ZONE, "%s: Too small packet %d\n", __func__,
+ pkt_len);
+ }
+
+ 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);
+
+ 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(common->priv);
+
+ return skb;
+}
+
+/**
+ * This function read frames from the SD card.
+ *
+ * @param common Pointer to the driver private structure.
+ * @return 0 on success, -1 on failure.
+ */
+static int rsi_read_pkt(struct rsi_common *common)
+{
+#ifdef USE_SDIO_INTF
+ struct rsi_hw *adapter = common->priv;
+ struct rsi_common_ops *common_ops = common->common_ops;
+ unsigned char num_blks = 0;
+ unsigned int rcv_pkt_len = 0;
+ int status = 0;
+#endif
+ unsigned char *frame_desc = NULL;
+ unsigned int index, length = 0;
+ unsigned short actual_length = 0, offset;
+ struct sk_buff *skb = NULL;
+ unsigned int queueno;
+ unsigned char extended_desc;
+
+#ifdef USE_SDIO_INTF
+ status = common_ops->read_register(adapter,
+ SDIO_RX_NUM_BLOCKS_REG,
+ &num_blks);
+
+ if (status) {
+ rsi_dbg(ERR_ZONE,
+ "%s: Failed to read pkt length from the card:\n",
+ __func__);
+ return status;
+ }
+ rcv_pkt_len = (num_blks * 256);
+
+ common->rx_data_pkt = kmalloc(rcv_pkt_len, GFP_KERNEL);
+ if (!common->rx_data_pkt) {
+ rsi_dbg(ERR_ZONE, "%s: Failed in memory allocation\n",
+ __func__);
+ return -1;
+ }
+
+ status = common_ops->host_intf_read_pkt(adapter,
+ common->rx_data_pkt,
+ rcv_pkt_len);
+ if (status) {
+ rsi_dbg(ERR_ZONE, "%s: Failed to read packet from card\n",
+ __func__);
+ goto fail;
+ }
+#endif
+ index = 0;
+ do {
+ frame_desc = &common->rx_data_pkt[index];
+ actual_length = *(unsigned short *)&frame_desc[0];
+ offset = *(unsigned short *)&frame_desc[2];
+
+ queueno = rsi_get_queueno(frame_desc, offset);
+ length = rsi_get_length(frame_desc, offset);
+ extended_desc = rsi_get_extended_desc(frame_desc, offset);
+
+ switch (queueno) {
+ 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);
+ common->common_ops->print(ERR_ZONE,
+ common->rx_data_pkt,
+ 200);
+ goto fail;
+ }
+
+ index += actual_length;
+#ifdef USE_USB_INTF
+ } while (0);
+#else
+ rcv_pkt_len -= actual_length;
+ } while (rcv_pkt_len);
+ kfree(common->rx_data_pkt);
+#endif
+ return 0;
+fail:
+ kfree(common->rx_data_pkt);
+ return -1;
+}
+
+
+#ifdef USE_SDIO_INTF
+/**
+ * This function read and process the SDIO interrupts.
+ *
+ * @param common Pointer to the driver private structure.
+ * @return None.
+ */
+void rsi_interrupt_handler(struct rsi_common *common)
+{
+ int status;
+ enum SDIO_INTERRUPT_TYPE isr_type;
+ unsigned char isr_status = 0;
+ unsigned char fw_status = 0;
+ struct rsi_common_ops *common_ops = common->common_ops;
+
+ common->rx_info.sdio_int_counter++;
+
+ do {
+ mutex_lock(&common->tx_rxlock);
+ status = common_ops->read_register(common->priv,
+ RSI_FN1_INT_REGISTER,
+ &isr_status);
+ if (status) {
+ rsi_dbg(ERR_ZONE,
+ "%s: Failed to Read Intr Status Register\n",
+ __func__);
+ mutex_unlock(&common->tx_rxlock);
+ return;
+ }
+
+ if (isr_status == 0) {
+ common_ops->set_event(&common->tx_event);
+ common->rx_info.sdio_intr_status_zero++;
+ mutex_unlock(&common->tx_rxlock);
+ return;
+ }
+
+ rsi_dbg(ISR_ZONE, "%s: Intr_status = %x %d %d\n",
+ __func__, isr_status, (1 << MSDU_PKT_PENDING),
+ (1 << FW_ASSERT_IND));
+
+ do {
+ RSI_GET_SDIO_INTERRUPT_TYPE(isr_status, isr_type);
+
+ switch (isr_type) {
+ case BUFFER_AVAILABLE:
+ common->rx_info.watch_bufferfull_count = 0;
+ common->rx_info.buffer_full = false;
+ common->rx_info.mgmt_buffer_full = false;
+ common_ops->ack_interrupt(common->priv,
+ (1 << PKT_BUFF_AVAILABLE));
+ common_ops->set_event((&common->tx_event));
+ rsi_dbg(ISR_ZONE,
+ "%s: ==> BUFFER_AVILABLE <==\n",
+ __func__);
+ common->rx_info.buf_avilable_counter++;
+ break;
+
+ case FIRMWARE_ASSERT_IND:
+ rsi_dbg(ERR_ZONE,
+ "%s: ==> FIRMWARE Assert <==\n",
+ __func__);
+ status = common_ops->read_register(common->priv,
+ SDIO_FW_STATUS_REG,
+ &fw_status);
+ if (status) {
+ rsi_dbg(ERR_ZONE,
+ "%s: Failed to read f/w reg\n",
+ __func__);
+ } else {
+ rsi_dbg(ERR_ZONE,
+ "%s: Firmware Status is 0x%x\n",
+ __func__ , fw_status);
+ common_ops->ack_interrupt(common->priv,
+ (1 << FW_ASSERT_IND));
+ }
+
+ common->fsm_state = FSM_CARD_NOT_READY;
+ break;
+
+ case MSDU_PACKET_PENDING:
+ rsi_dbg(ISR_ZONE, "Pkt pending interrupt\n");
+ common->rx_info.total_sdio_msdu_pending_intr++;
+
+ status = rsi_read_pkt(common);
+ if (status) {
+ rsi_dbg(ERR_ZONE,
+ "%s: Failed to read pkt\n",
+ __func__);
+ mutex_unlock(&common->tx_rxlock);
+ return;
+ }
+ break;
+ default:
+ common_ops->ack_interrupt(common->priv,
+ isr_status);
+ common->rx_info.total_sdio_unknown_intr++;
+ isr_status = 0;
+ rsi_dbg(ISR_ZONE,
+ "Unknown Interrupt %x\n",
+ isr_status);
+ break;
+ }
+ isr_status ^= BIT(isr_type - 1);
+ } while (isr_status);
+ mutex_unlock(&common->tx_rxlock);
+ } while (1);
+ return;
+}
+EXPORT_SYMBOL(rsi_interrupt_handler);
+#endif
+
+
+#ifdef USE_SDIO_INTF
+/**
+ * This function sets the AHB master access MS word in the SDIO slave registers.
+ *
+ * @param adapter Pointer to the adapter structure.
+ * @param ms_word ms word need to be initialized.
+ * @return status: 0 on success, -1 on failure.
+ */
+static int rsi_sdio_master_access_msword(struct rsi_hw *adapter,
+ unsigned short ms_word)
+{
+ struct rsi_common *common = adapter->priv;
+ struct rsi_common_ops *common_ops = common->common_ops;
+ unsigned char byte;
+ unsigned char reg_dmn = 0;
+ int status = 0;
+
+ byte = (unsigned char)(ms_word & 0x00FF);
+
+ rsi_dbg(INIT_ZONE,
+ "%s: MASTER_ACCESS_MSBYTE:0x%x\n", __func__, byte);
+
+ status = common_ops->write_register(adapter,
+ reg_dmn,
+ SDIO_MASTER_ACCESS_MSBYTE,
+ &byte);
+ if (status) {
+ rsi_dbg(ERR_ZONE,
+ "%s: fail to access MASTER_ACCESS_MSBYTE\n",
+ __func__);
+ return -1;
+ }
+
+ byte = (unsigned char)(ms_word >> 8);
+
+ rsi_dbg(INIT_ZONE, "%s:MASTER_ACCESS_LSBYTE:0x%x\n", __func__, byte);
+ status = common_ops->write_register(adapter,
+ reg_dmn,
+ SDIO_MASTER_ACCESS_LSBYTE,
+ &byte);
+ return status;
+}
+#endif
+
+/**
+ * This function includes the actual funtionality of copying the TA firmware to the card.
+ * Basically this function includes opening the TA file,reading the TA file and
+ * writing their values in blocks of data.
+ *
+ * @param common Pointer to the driver private structure.
+ * @param fw Pointer to the firmware value to be written.
+ * @param len length of firmware file.
+ * @param num_blocks Number of blocks to be written to the card.
+ * @return 0 on success and -1 on failure.
+ */
+static int rsi_copy_to_card(struct rsi_common *common,
+ const unsigned char *fw,
+ unsigned int len,
+ unsigned int num_blocks)
+{
+ struct rsi_hw *adapter = common->priv;
+ unsigned int indx, ii;
+ unsigned int block_size = adapter->tx_blk_size;
+ struct rsi_common_ops *common_ops = common->common_ops;
+ unsigned int lsb_address;
+#ifdef USE_SDIO_INTF
+ unsigned int data[] = { TA_HOLD_THREAD_VALUE, TA_SOFT_RST_CLR,
+ TA_PC_ZERO, TA_RELEASE_THREAD_VALUE };
+ unsigned int address[] = { TA_HOLD_THREAD_REG, TA_SOFT_RESET_REG,
+ TA_TH0_PC_REG, TA_RELEASE_THREAD_REG };
+#endif
+ unsigned int base_address;
+ unsigned short msb_address;
+
+ base_address = metadata[0].address;
+ msb_address = base_address >> 16;
+
+ for (indx = 0, ii = 0; ii < num_blocks; ii++, indx += block_size) {
+ lsb_address = base_address;
+#ifdef USE_SDIO_INTF
+ lsb_address = ((unsigned short) base_address |
+ RSI_SD_REQUEST_MASTER);
+#endif
+ if (common_ops->load_firmware(adapter,
+ lsb_address,
+ (unsigned char *)(fw + indx),
+ block_size)) {
+ rsi_dbg(ERR_ZONE,
+ "%s: Unable to load %s blk\n", __func__,
+ metadata[0].name);
+ return -1;
+ }
+ rsi_dbg(INIT_ZONE, "%s: loading %s block: %d\n",
+ __func__, metadata[0].name, ii);
+ base_address += block_size;
+#ifdef USE_SDIO_INTF
+ if ((base_address >> 16) != msb_address) {
+ msb_address += 1;
+ if (rsi_sdio_master_access_msword(adapter,
+ msb_address)) {
+ rsi_dbg(ERR_ZONE,
+ "%s: Unable to set ms word reg\n",
+ __func__);
+ return -1;
+ }
+ }
+#endif
+ }
+
+ if (len % block_size) {
+ lsb_address = base_address;
+#ifdef USE_SDIO_INTF
+ lsb_address |= ((unsigned short) base_address |
+ RSI_SD_REQUEST_MASTER);
+#endif
+ if (common_ops->load_firmware(adapter,
+ lsb_address,
+ (unsigned char *)(fw + indx),
+ len % block_size)) {
+ rsi_dbg(ERR_ZONE,
+ "%s: Unable to load %s blk\n", __func__,
+ metadata[0].name);
+ return -1;
+ }
+ }
+ rsi_dbg(INIT_ZONE,
+ "%s: Succesfully loaded %s instructions\n", __func__,
+ metadata[0].name);
+
+#ifdef USE_SDIO_INTF
+
+ if (rsi_sdio_master_access_msword(adapter, 0x2200)) {
+ rsi_dbg(ERR_ZONE,
+ "%s: Unable to set ms word to common reg\n",
+ __func__);
+ return -1;
+ }
+
+ for (ii = 0; ii < ARRAY_SIZE(data); ii++) {
+ /* Bringing TA out of reset */
+ if (common_ops->write_reg_multiple(adapter,
+ (address[ii] |
+ RSI_SD_REQUEST_MASTER),
+ (unsigned char *)&data[ii],
+ 4)) {
+ rsi_dbg(ERR_ZONE,
+ "%s: Unable to hold TA threads\n", __func__);
+ return -1;
+ }
+ }
+#endif
+ rsi_dbg(INIT_ZONE, "%s: loaded firmware\n", __func__);
+ return 0;
+}
+
+/**
+ * This function reads the firmware version from the firmware file.
+ *
+ * @param fw Pointer to the firmware data.
+ * @param fw_ver Pointer to firmware version_info structure.
+ * @return None
+ */
+static void rsi_fill_fw_ver(const unsigned char *fw,
+ struct version_info *fw_ver)
+{
+ fw_ver->major = (fw[LMAC_VER_OFFSET] & 0xFF);
+ fw_ver->minor = (fw[LMAC_VER_OFFSET + 1] & 0xFF);
+ fw_ver->release_num = (fw[LMAC_VER_OFFSET + 2] & 0xFF);
+ fw_ver->patch_num = (fw[LMAC_VER_OFFSET + 3] & 0xFF);
+ fw_ver->info.fw_ver[0] = (fw[LMAC_VER_OFFSET + 4] & 0xFF);
+ return;
+}
+
+/**
+ * This function includes the actual funtionality of loading the TA firmware.
+ * This function also includes opening the TA file,reading the TA file and
+ * writing their values in blocks of data.
+ *
+ * @param common Pointer to the driver private structure.
+ * @param fw_status Firmware status.
+ * @return status: 0 on success, -1 on failure.
+ */
+static int rsi_load_ta_instructions(struct rsi_common *common,
+ unsigned short fw_status)
+{
+ struct rsi_hw *adapter = common->priv;
+ struct version_info *fw_ver = &common->fw_ver;
+ unsigned int len;
+ unsigned int num_blocks;
+ const unsigned char *fw;
+ const struct firmware *fw_entry = NULL;
+ unsigned int block_size = adapter->tx_blk_size;
+ int status = 0;
+
+#ifdef USE_SDIO_INTF
+ unsigned int base_address;
+ unsigned short msb_address;
+
+ if (rsi_sdio_master_access_msword(adapter, 0x2200)) {
+ rsi_dbg(ERR_ZONE,
+ "%s: Unable to set ms word to common reg\n",
+ __func__);
+ return -1;
+ }
+ base_address = metadata[0].address;
+ msb_address = (base_address >> 16);
+
+ if (rsi_sdio_master_access_msword(adapter, msb_address)) {
+ rsi_dbg(ERR_ZONE,
+ "%s: Unable to set ms word reg\n", __func__);
+ return -1;
+ }
+#endif
+
+ status = request_firmware(&fw_entry, metadata[0].name, adapter->device);
+ if (status < 0) {
+ rsi_dbg(ERR_ZONE, "%s Firmware file %s not found\n",
+ __func__, metadata[0].name);
+ return status;
+ }
+
+ fw = kmemdup(fw_entry->data, fw_entry->size, GFP_KERNEL);
+ len = fw_entry->size;
+
+#ifdef USE_USB_INTF
+ if (fw_status) {
+#endif
+ rsi_fill_fw_ver(fw, fw_ver);
+#ifdef USE_USB_INTF
+ return 0;
+ }
+#endif
+
+ if (len % 4)
+ len += (4 - (len % 4));
+
+ num_blocks = (len / block_size);
+
+ rsi_dbg(INIT_ZONE, "%s: Instruction size:%d\n", __func__, len);
+ rsi_dbg(INIT_ZONE, "%s: num blocks: %d\n", __func__, num_blocks);
+
+ status = rsi_copy_to_card(common, fw, len, num_blocks);
+ release_firmware(fw_entry);
+ return status;
+}
+
+/**
+ * This function is a kernel thread to send the packets to the device.
+ *
+ * @param common Pointer to the driver private structure.
+ * @return None.
+ */
+void rsi_tx_scheduler_thread(struct rsi_common *common)
+{
+ struct rsi_common_ops *common_ops = common->common_ops;
+
+ do {
+ if (common->rx_info.buffer_full) {
+ common_ops->wait_queue_event(&common->tx_event, 2);
+ rsi_dbg(INFO_ZONE,
+ "%s: Event wait for 2ms\n", __func__);
+ } else {
+ common_ops->wait_queue_event(&common->tx_event,
+ EVENT_WAIT_FOREVER);
+ }
+ common_ops->reset_event(&common->tx_event);
+
+ if (common->init_done)
+ common_ops->qos_processor(common);
+ } while (atomic_read(&common->tx_thread_done) == 0);
+ complete_and_exit(&common->tx_thread.completion, 0);
+}
+EXPORT_SYMBOL(rsi_tx_scheduler_thread);
+
+#ifdef USE_USB_INTF
+/**
+ * This is a kernel thread to receive the packets from the USB device.
+ *
+ * @param common Pointer to the driver private structure.
+ * @return None.
+ */
+void rsi_usb_rx_thread(struct rsi_common *common)
+{
+ struct rsi_common_ops *common_ops = common->common_ops;
+ struct rsi_hw *adapter = common->priv;
+
+ while (1) {
+ common_ops->wait_queue_event(&common->rx_event,
+ EVENT_WAIT_FOREVER);
+
+ if (atomic_read(&common->rx_thread_done))
+ goto out;
+
+ mutex_lock(&common->tx_rxlock);
+ if (rsi_read_pkt(common)) {
+ rsi_dbg(ERR_ZONE, "%s: Failed to read pkt\n", __func__);
+ mutex_unlock(&common->tx_rxlock);
+ goto out;
+ }
+ mutex_unlock(&common->tx_rxlock);
+ common_ops->reset_event(&common->rx_event);
+ if (common_ops->rx_urb_submit(adapter)) {
+ rsi_dbg(ERR_ZONE,
+ "%s: Failed in urb submission\n", __func__);
+ goto out;
+ }
+ }
+
+out:
+ rsi_dbg(INFO_ZONE, "%s: Terminated thread\n", __func__);
+ atomic_inc(&common->rx_thread_done);
+ complete_and_exit(&common->rx_thread.completion, 0);
+ return;
+}
+EXPORT_SYMBOL(rsi_usb_rx_thread);
+#endif
+
+/**
+ * This Function Initializes The HAL.
+ *
+ * @param common Pointer to the driver private structure.
+ * @param fw_status Firmware status.
+ * @return 0 on success, -1 on failure.
+ */
+int rsi_device_init(struct rsi_common *common, unsigned short fw_status)
+{
+ rsi_set_default_parameters(common);
+
+ if (rsi_load_ta_instructions(common, fw_status))
+ return -1;
+
+#ifdef USE_SDIO_INTF
+ if (rsi_sdio_master_access_msword(common->priv, 0x4105)) {
+ rsi_dbg(ERR_ZONE, "%s: Unable to set ms word reg\n",
+ __func__);
+ return -1;
+ }
+ rsi_dbg(INIT_ZONE,
+ "%s: Setting ms word to 0x41050000\n", __func__);
+#endif
+
+ return 0;
+}
+EXPORT_SYMBOL(rsi_device_init);
+
+/**
+ * This Function de-initializes The HAL.
+ *
+ * @param adapter Pointer to the adapter structure.
+ * @return 0 on success.
+ */
+int rsi_device_deinit(struct rsi_hw *adapter)
+{
+ rsi_mac80211_detach(adapter);
+ return 0;
+}
+EXPORT_SYMBOL(rsi_device_deinit);
diff -uprN a/drivers/net/wireless/rsi/91x/rsi_91x_main.c b/drivers/net/wireless/rsi/91x/rsi_91x_main.c
--- a/drivers/net/wireless/rsi/91x/rsi_91x_main.c 1970-01-01 05:30:00.000000000 +0530
+++ b/drivers/net/wireless/rsi/91x/rsi_91x_main.c 2014-01-30 16:25:13.984547126 +0530
@@ -0,0 +1,94 @@
+/**
+ * @file rsi_91x_main.c
+ * @author
+ * @version 1.0
+ *
+ * @section LICENSE
+ * Copyright (c) 2013 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.
+ *
+ * @section DESCRIPTION
+ *
+ * This file contians the code specific to file operations like creation, open,
+ * reading/ writing to the files
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include "../include/rsi_main.h"
+#include "../include/rsi_device_ops.h"
+
+unsigned int 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(rsi_zone_enabled);
+
+/**
+ * This function reads parameters of module connected.
+ *
+ * @param common Pointer to the driver private structure.
+ * @return 0 on success, -1 on failure.
+ */
+int rsi_set_default_parameters(struct rsi_common *common)
+{
+ common->rftype = RSI_RF_8111;
+ common->band = IEEE80211_BAND_2GHZ;
+ common->channel_width = BW_20MHZ;
+ common->rts_threshold = MAX_RTS_THRESHOLD;
+ common->channel = 1;
+ common->min_rate = 0xffff;
+ common->fsm_state = FSM_CARD_NOT_READY;
+ return 0;
+}
+
+/**
+ * This function is invoked when the module is loaded into the kernel.
+ * It registers the client driver.
+ *
+ * @param 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;
+}
+
+/**
+ * This function is called at the time of removing/unloading the module.
+ * It unregisters the client driver.
+ *
+ * @param Void.
+ * @return None.
+ */
+static void rsi_91x_hal_module_exit(void)
+{
+ rsi_dbg(INIT_ZONE, "%s: Module exit called\n", __func__);
+ return;
+}
+
+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 driver");
+MODULE_SUPPORTED_DEVICE("RSI-91x");
+MODULE_VERSION("0.1");
+MODULE_LICENSE("GPL");
--
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