Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1745 commits)
  dp83640: free packet queues on remove
  dp83640: use proper function to free transmit time stamping packets
  ipv6: Do not use routes from locally generated RAs
  |PATCH net-next] tg3: add tx_dropped counter
  be2net: don't create multiple RX/TX rings in multi channel mode
  be2net: don't create multiple TXQs in BE2
  be2net: refactor VF setup/teardown code into be_vf_setup/clear()
  be2net: add vlan/rx-mode/flow-control config to be_setup()
  net_sched: cls_flow: use skb_header_pointer()
  ipv4: avoid useless call of the function check_peer_pmtu
  TCP: remove TCP_DEBUG
  net: Fix driver name for mdio-gpio.c
  ipv4: tcp: fix TOS value in ACK messages sent from TIME_WAIT
  rtnetlink: Add missing manual netlink notification in dev_change_net_namespaces
  ipv4: fix ipsec forward performance regression
  jme: fix irq storm after suspend/resume
  route: fix ICMP redirect validation
  net: hold sock reference while processing tx timestamps
  tcp: md5: add more const attributes
  Add ethtool -g support to virtio_net
  ...

Fix up conflicts in:
 - drivers/net/Kconfig:
	The split-up generated a trivial conflict with removal of a
	stale reference to Documentation/networking/net-modules.txt.
	Remove it from the new location instead.
 - fs/sysfs/dir.c:
	Fairly nasty conflicts with the sysfs rb-tree usage, conflicting
	with Eric Biederman's changes for tagged directories.

1 files changed, 1948 insertions, 0 deletions

diff --git a/drivers/net/wireless/mwifiex/pcie.c b/drivers/net/wireless/mwifiex/pcie.c
new file mode 100644
index 000000000000..d34acf082d3a
--- /dev/null
+++ b/drivers/net/wireless/mwifiex/pcie.c
@@ -0,0 +1,1948 @@
+/*
+ * Marvell Wireless LAN device driver: PCIE specific handling
+ *
+ * Copyright (C) 2011, Marvell International Ltd.
+ *
+ * This software file (the "File") is distributed by Marvell International
+ * Ltd. under the terms of the GNU General Public License Version 2, June 1991
+ * (the "License").  You may use, redistribute and/or modify this File in
+ * accordance with the terms and conditions of the License, a copy of which
+ * is available by writing to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
+ * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
+ *
+ * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
+ * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
+ * this warranty disclaimer.
+ */
+
+#include <linux/firmware.h>
+
+#include "decl.h"
+#include "ioctl.h"
+#include "util.h"
+#include "fw.h"
+#include "main.h"
+#include "wmm.h"
+#include "11n.h"
+#include "pcie.h"
+
+#define PCIE_VERSION	"1.0"
+#define DRV_NAME        "Marvell mwifiex PCIe"
+
+static u8 user_rmmod;
+
+static struct mwifiex_if_ops pcie_ops;
+
+static struct semaphore add_remove_card_sem;
+static int mwifiex_pcie_enable_host_int(struct mwifiex_adapter *adapter);
+static int mwifiex_pcie_resume(struct pci_dev *pdev);
+
+/*
+ * This function is called after skb allocation to update
+ * "skb->cb" with physical address of data pointer.
+ */
+static phys_addr_t *mwifiex_update_sk_buff_pa(struct sk_buff *skb)
+{
+	phys_addr_t *buf_pa = MWIFIEX_SKB_PACB(skb);
+
+	*buf_pa = (phys_addr_t)virt_to_phys(skb->data);
+
+	return buf_pa;
+}
+
+/*
+ * This function reads sleep cookie and checks if FW is ready
+ */
+static bool mwifiex_pcie_ok_to_access_hw(struct mwifiex_adapter *adapter)
+{
+	u32 *cookie_addr;
+	struct pcie_service_card *card = adapter->card;
+
+	if (card->sleep_cookie) {
+		cookie_addr = (u32 *)card->sleep_cookie->data;
+		dev_dbg(adapter->dev, "info: ACCESS_HW: sleep cookie=0x%x\n",
+			*cookie_addr);
+		if (*cookie_addr == FW_AWAKE_COOKIE)
+			return true;
+	}
+
+	return false;
+}
+
+/*
+ * This function probes an mwifiex device and registers it. It allocates
+ * the card structure, enables PCIE function number and initiates the
+ * device registration and initialization procedure by adding a logical
+ * interface.
+ */
+static int mwifiex_pcie_probe(struct pci_dev *pdev,
+					const struct pci_device_id *ent)
+{
+	struct pcie_service_card *card;
+
+	pr_debug("info: vendor=0x%4.04X device=0x%4.04X rev=%d\n",
+				pdev->vendor, pdev->device, pdev->revision);
+
+	card = kzalloc(sizeof(struct pcie_service_card), GFP_KERNEL);
+	if (!card) {
+		pr_err("%s: failed to alloc memory\n", __func__);
+		return -ENOMEM;
+	}
+
+	card->dev = pdev;
+
+	if (mwifiex_add_card(card, &add_remove_card_sem, &pcie_ops,
+			     MWIFIEX_PCIE)) {
+		pr_err("%s failed\n", __func__);
+		kfree(card);
+		return -1;
+	}
+
+	return 0;
+}
+
+/*
+ * This function removes the interface and frees up the card structure.
+ */
+static void mwifiex_pcie_remove(struct pci_dev *pdev)
+{
+	struct pcie_service_card *card;
+	struct mwifiex_adapter *adapter;
+	int i;
+
+	card = pci_get_drvdata(pdev);
+	if (!card)
+		return;
+
+	adapter = card->adapter;
+	if (!adapter || !adapter->priv_num)
+		return;
+
+	if (user_rmmod) {
+#ifdef CONFIG_PM
+		if (adapter->is_suspended)
+			mwifiex_pcie_resume(pdev);
+#endif
+
+		for (i = 0; i < adapter->priv_num; i++)
+			if ((GET_BSS_ROLE(adapter->priv[i]) ==
+						MWIFIEX_BSS_ROLE_STA) &&
+					adapter->priv[i]->media_connected)
+				mwifiex_deauthenticate(adapter->priv[i], NULL);
+
+		mwifiex_disable_auto_ds(mwifiex_get_priv(adapter,
+						 MWIFIEX_BSS_ROLE_ANY));
+
+		mwifiex_init_shutdown_fw(mwifiex_get_priv(adapter,
+						MWIFIEX_BSS_ROLE_ANY),
+					 MWIFIEX_FUNC_SHUTDOWN);
+	}
+
+	mwifiex_remove_card(card->adapter, &add_remove_card_sem);
+	kfree(card);
+}
+
+/*
+ * Kernel needs to suspend all functions separately. Therefore all
+ * registered functions must have drivers with suspend and resume
+ * methods. Failing that the kernel simply removes the whole card.
+ *
+ * If already not suspended, this function allocates and sends a host
+ * sleep activate request to the firmware and turns off the traffic.
+ */
+static int mwifiex_pcie_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+	struct mwifiex_adapter *adapter;
+	struct pcie_service_card *card;
+	int hs_actived, i;
+
+	if (pdev) {
+		card = (struct pcie_service_card *) pci_get_drvdata(pdev);
+		if (!card || card->adapter) {
+			pr_err("Card or adapter structure is not valid\n");
+			return 0;
+		}
+	} else {
+		pr_err("PCIE device is not specified\n");
+		return 0;
+	}
+
+	adapter = card->adapter;
+
+	hs_actived = mwifiex_enable_hs(adapter);
+
+	/* Indicate device suspended */
+	adapter->is_suspended = true;
+
+	for (i = 0; i < adapter->priv_num; i++)
+		netif_carrier_off(adapter->priv[i]->netdev);
+
+	return 0;
+}
+
+/*
+ * Kernel needs to suspend all functions separately. Therefore all
+ * registered functions must have drivers with suspend and resume
+ * methods. Failing that the kernel simply removes the whole card.
+ *
+ * If already not resumed, this function turns on the traffic and
+ * sends a host sleep cancel request to the firmware.
+ */
+static int mwifiex_pcie_resume(struct pci_dev *pdev)
+{
+	struct mwifiex_adapter *adapter;
+	struct pcie_service_card *card;
+	int i;
+
+	if (pdev) {
+		card = (struct pcie_service_card *) pci_get_drvdata(pdev);
+		if (!card || !card->adapter) {
+			pr_err("Card or adapter structure is not valid\n");
+			return 0;
+		}
+	} else {
+		pr_err("PCIE device is not specified\n");
+		return 0;
+	}
+
+	adapter = card->adapter;
+
+	if (!adapter->is_suspended) {
+		dev_warn(adapter->dev, "Device already resumed\n");
+		return 0;
+	}
+
+	adapter->is_suspended = false;
+
+	for (i = 0; i < adapter->priv_num; i++)
+		if (adapter->priv[i]->media_connected)
+			netif_carrier_on(adapter->priv[i]->netdev);
+
+	mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
+			      MWIFIEX_ASYNC_CMD);
+
+	return 0;
+}
+
+#define PCIE_VENDOR_ID_MARVELL              (0x11ab)
+#define PCIE_DEVICE_ID_MARVELL_88W8766P		(0x2b30)
+
+static DEFINE_PCI_DEVICE_TABLE(mwifiex_ids) = {
+	{
+		PCIE_VENDOR_ID_MARVELL, PCIE_DEVICE_ID_MARVELL_88W8766P,
+		PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+	},
+	{},
+};
+
+MODULE_DEVICE_TABLE(pci, mwifiex_ids);
+
+/* PCI Device Driver */
+static struct pci_driver __refdata mwifiex_pcie = {
+	.name     = "mwifiex_pcie",
+	.id_table = mwifiex_ids,
+	.probe    = mwifiex_pcie_probe,
+	.remove   = mwifiex_pcie_remove,
+#ifdef CONFIG_PM
+	/* Power Management Hooks */
+	.suspend  = mwifiex_pcie_suspend,
+	.resume   = mwifiex_pcie_resume,
+#endif
+};
+
+/*
+ * This function writes data into PCIE card register.
+ */
+static int mwifiex_write_reg(struct mwifiex_adapter *adapter, int reg, u32 data)
+{
+	struct pcie_service_card *card = adapter->card;
+
+	iowrite32(data, card->pci_mmap1 + reg);
+
+	return 0;
+}
+
+/*
+ * This function reads data from PCIE card register.
+ */
+static int mwifiex_read_reg(struct mwifiex_adapter *adapter, int reg, u32 *data)
+{
+	struct pcie_service_card *card = adapter->card;
+
+	*data = ioread32(card->pci_mmap1 + reg);
+
+	return 0;
+}
+
+/*
+ * This function wakes up the card.
+ *
+ * A host power up command is written to the card configuration
+ * register to wake up the card.
+ */
+static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter)
+{
+	int i = 0;
+
+	while (mwifiex_pcie_ok_to_access_hw(adapter)) {
+		i++;
+		udelay(10);
+		/* 50ms max wait */
+		if (i == 50000)
+			break;
+	}
+
+	dev_dbg(adapter->dev, "event: Wakeup device...\n");
+
+	/* Enable interrupts or any chip access will wakeup device */
+	if (mwifiex_write_reg(adapter, PCIE_HOST_INT_MASK, HOST_INTR_MASK)) {
+		dev_warn(adapter->dev, "Enable host interrupt failed\n");
+		return -1;
+	}
+
+	dev_dbg(adapter->dev, "PCIE wakeup: Setting PS_STATE_AWAKE\n");
+	adapter->ps_state = PS_STATE_AWAKE;
+
+	return 0;
+}
+
+/*
+ * This function is called after the card has woken up.
+ *
+ * The card configuration register is reset.
+ */
+static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter)
+{
+	dev_dbg(adapter->dev, "cmd: Wakeup device completed\n");
+
+	return 0;
+}
+
+/*
+ * This function disables the host interrupt.
+ *
+ * The host interrupt mask is read, the disable bit is reset and
+ * written back to the card host interrupt mask register.
+ */
+static int mwifiex_pcie_disable_host_int(struct mwifiex_adapter *adapter)
+{
+	if (mwifiex_pcie_ok_to_access_hw(adapter)) {
+		if (mwifiex_write_reg(adapter, PCIE_HOST_INT_MASK,
+				      0x00000000)) {
+			dev_warn(adapter->dev, "Disable host interrupt failed\n");
+			return -1;
+		}
+	}
+
+	return 0;
+}
+
+/*
+ * This function enables the host interrupt.
+ *
+ * The host interrupt enable mask is written to the card
+ * host interrupt mask register.
+ */
+static int mwifiex_pcie_enable_host_int(struct mwifiex_adapter *adapter)
+{
+	if (mwifiex_pcie_ok_to_access_hw(adapter)) {
+		/* Simply write the mask to the register */
+		if (mwifiex_write_reg(adapter, PCIE_HOST_INT_MASK,
+				      HOST_INTR_MASK)) {
+			dev_warn(adapter->dev, "Enable host interrupt failed\n");
+			return -1;
+		}
+	}
+
+	return 0;
+}
+
+/*
+ * This function creates buffer descriptor ring for TX
+ */
+static int mwifiex_pcie_create_txbd_ring(struct mwifiex_adapter *adapter)
+{
+	struct pcie_service_card *card = adapter->card;
+	struct sk_buff *skb;
+	int i;
+	phys_addr_t *buf_pa;
+
+	/*
+	 * driver maintaines the write pointer and firmware maintaines the read
+	 * pointer. The write pointer starts at 0 (zero) while the read pointer
+	 * starts at zero with rollover bit set
+	 */
+	card->txbd_wrptr = 0;
+	card->txbd_rdptr |= MWIFIEX_BD_FLAG_ROLLOVER_IND;
+
+	/* allocate shared memory for the BD ring and divide the same in to
+	   several descriptors */
+	card->txbd_ring_size = sizeof(struct mwifiex_pcie_buf_desc) *
+				MWIFIEX_MAX_TXRX_BD;
+	dev_dbg(adapter->dev, "info: txbd_ring: Allocating %d bytes\n",
+				card->txbd_ring_size);
+	card->txbd_ring_vbase = kzalloc(card->txbd_ring_size, GFP_KERNEL);
+	if (!card->txbd_ring_vbase) {
+		dev_err(adapter->dev, "Unable to allocate buffer for txbd ring.\n");
+		kfree(card->txbd_ring_vbase);
+		return -1;
+	}
+	card->txbd_ring_pbase = virt_to_phys(card->txbd_ring_vbase);
+
+	dev_dbg(adapter->dev, "info: txbd_ring - base: %p, pbase: %#x:%x,"
+			"len: %x\n", card->txbd_ring_vbase,
+			(u32)card->txbd_ring_pbase,
+			(u32)((u64)card->txbd_ring_pbase >> 32),
+			card->txbd_ring_size);
+
+	for (i = 0; i < MWIFIEX_MAX_TXRX_BD; i++) {
+		card->txbd_ring[i] = (struct mwifiex_pcie_buf_desc *)
+				(card->txbd_ring_vbase +
+				(sizeof(struct mwifiex_pcie_buf_desc) * i));
+
+		/* Allocate buffer here so that firmware can DMA data from it */
+		skb = dev_alloc_skb(MWIFIEX_RX_DATA_BUF_SIZE);
+		if (!skb) {
+			dev_err(adapter->dev, "Unable to allocate skb for TX ring.\n");
+			kfree(card->txbd_ring_vbase);
+			return -ENOMEM;
+		}
+		buf_pa = mwifiex_update_sk_buff_pa(skb);
+
+		skb_put(skb, MWIFIEX_RX_DATA_BUF_SIZE);
+		dev_dbg(adapter->dev, "info: TX ring: add new skb base: %p, "
+				"buf_base: %p, buf_pbase: %#x:%x, "
+				"buf_len: %#x\n", skb, skb->data,
+				(u32)*buf_pa, (u32)(((u64)*buf_pa >> 32)),
+				skb->len);
+
+		card->tx_buf_list[i] = skb;
+		card->txbd_ring[i]->paddr = *buf_pa;
+		card->txbd_ring[i]->len = (u16)skb->len;
+		card->txbd_ring[i]->flags = 0;
+	}
+
+	return 0;
+}
+
+static int mwifiex_pcie_delete_txbd_ring(struct mwifiex_adapter *adapter)
+{
+	struct pcie_service_card *card = adapter->card;
+	int i;
+
+	for (i = 0; i < MWIFIEX_MAX_TXRX_BD; i++) {
+		if (card->tx_buf_list[i])
+			dev_kfree_skb_any(card->tx_buf_list[i]);
+		card->tx_buf_list[i] = NULL;
+		card->txbd_ring[i]->paddr = 0;
+		card->txbd_ring[i]->len = 0;
+		card->txbd_ring[i]->flags = 0;
+		card->txbd_ring[i] = NULL;
+	}
+
+	kfree(card->txbd_ring_vbase);
+	card->txbd_ring_size = 0;
+	card->txbd_wrptr = 0;
+	card->txbd_rdptr = 0 | MWIFIEX_BD_FLAG_ROLLOVER_IND;
+	card->txbd_ring_vbase = NULL;
+
+	return 0;
+}
+
+/*
+ * This function creates buffer descriptor ring for RX
+ */
+static int mwifiex_pcie_create_rxbd_ring(struct mwifiex_adapter *adapter)
+{
+	struct pcie_service_card *card = adapter->card;
+	struct sk_buff *skb;
+	int i;
+	phys_addr_t *buf_pa;
+
+	/*
+	 * driver maintaines the read pointer and firmware maintaines the write
+	 * pointer. The write pointer starts at 0 (zero) while the read pointer
+	 * starts at zero with rollover bit set
+	 */
+	card->rxbd_wrptr = 0;
+	card->rxbd_rdptr |= MWIFIEX_BD_FLAG_ROLLOVER_IND;
+
+	card->rxbd_ring_size = sizeof(struct mwifiex_pcie_buf_desc) *
+				MWIFIEX_MAX_TXRX_BD;
+	dev_dbg(adapter->dev, "info: rxbd_ring: Allocating %d bytes\n",
+				card->rxbd_ring_size);
+	card->rxbd_ring_vbase = kzalloc(card->rxbd_ring_size, GFP_KERNEL);
+	if (!card->rxbd_ring_vbase) {
+		dev_err(adapter->dev, "Unable to allocate buffer for "
+				"rxbd_ring.\n");
+		return -1;
+	}
+	card->rxbd_ring_pbase = virt_to_phys(card->rxbd_ring_vbase);
+
+	dev_dbg(adapter->dev, "info: rxbd_ring - base: %p, pbase: %#x:%x,"
+			"len: %#x\n", card->rxbd_ring_vbase,
+			(u32)card->rxbd_ring_pbase,
+			(u32)((u64)card->rxbd_ring_pbase >> 32),
+			card->rxbd_ring_size);
+
+	for (i = 0; i < MWIFIEX_MAX_TXRX_BD; i++) {
+		card->rxbd_ring[i] = (struct mwifiex_pcie_buf_desc *)
+				(card->rxbd_ring_vbase +
+				(sizeof(struct mwifiex_pcie_buf_desc) * i));
+
+		/* Allocate skb here so that firmware can DMA data from it */
+		skb = dev_alloc_skb(MWIFIEX_RX_DATA_BUF_SIZE);
+		if (!skb) {
+			dev_err(adapter->dev, "Unable to allocate skb for RX ring.\n");
+			kfree(card->rxbd_ring_vbase);
+			return -ENOMEM;
+		}
+		buf_pa = mwifiex_update_sk_buff_pa(skb);
+		skb_put(skb, MWIFIEX_RX_DATA_BUF_SIZE);
+
+		dev_dbg(adapter->dev, "info: RX ring: add new skb base: %p, "
+				"buf_base: %p, buf_pbase: %#x:%x, "
+				"buf_len: %#x\n", skb, skb->data,
+				(u32)*buf_pa, (u32)((u64)*buf_pa >> 32),
+				skb->len);
+
+		card->rx_buf_list[i] = skb;
+		card->rxbd_ring[i]->paddr = *buf_pa;
+		card->rxbd_ring[i]->len = (u16)skb->len;
+		card->rxbd_ring[i]->flags = 0;
+	}
+
+	return 0;
+}
+
+/*
+ * This function deletes Buffer descriptor ring for RX
+ */
+static int mwifiex_pcie_delete_rxbd_ring(struct mwifiex_adapter *adapter)
+{
+	struct pcie_service_card *card = adapter->card;
+	int i;
+
+	for (i = 0; i < MWIFIEX_MAX_TXRX_BD; i++) {
+		if (card->rx_buf_list[i])
+			dev_kfree_skb_any(card->rx_buf_list[i]);
+		card->rx_buf_list[i] = NULL;
+		card->rxbd_ring[i]->paddr = 0;
+		card->rxbd_ring[i]->len = 0;
+		card->rxbd_ring[i]->flags = 0;
+		card->rxbd_ring[i] = NULL;
+	}
+
+	kfree(card->rxbd_ring_vbase);
+	card->rxbd_ring_size = 0;
+	card->rxbd_wrptr = 0;
+	card->rxbd_rdptr = 0 | MWIFIEX_BD_FLAG_ROLLOVER_IND;
+	card->rxbd_ring_vbase = NULL;
+
+	return 0;
+}
+
+/*
+ * This function creates buffer descriptor ring for Events
+ */
+static int mwifiex_pcie_create_evtbd_ring(struct mwifiex_adapter *adapter)
+{
+	struct pcie_service_card *card = adapter->card;
+	struct sk_buff *skb;
+	int i;
+	phys_addr_t *buf_pa;
+
+	/*
+	 * driver maintaines the read pointer and firmware maintaines the write
+	 * pointer. The write pointer starts at 0 (zero) while the read pointer
+	 * starts at zero with rollover bit set
+	 */
+	card->evtbd_wrptr = 0;
+	card->evtbd_rdptr |= MWIFIEX_BD_FLAG_ROLLOVER_IND;
+
+	card->evtbd_ring_size = sizeof(struct mwifiex_pcie_buf_desc) *
+				MWIFIEX_MAX_EVT_BD;
+	dev_dbg(adapter->dev, "info: evtbd_ring: Allocating %d bytes\n",
+				card->evtbd_ring_size);
+	card->evtbd_ring_vbase = kzalloc(card->evtbd_ring_size, GFP_KERNEL);
+	if (!card->evtbd_ring_vbase) {
+		dev_err(adapter->dev, "Unable to allocate buffer. "
+				"Terminating download\n");
+		return -1;
+	}
+	card->evtbd_ring_pbase = virt_to_phys(card->evtbd_ring_vbase);
+
+	dev_dbg(adapter->dev, "info: CMDRSP/EVT bd_ring - base: %p, "
+		       "pbase: %#x:%x, len: %#x\n", card->evtbd_ring_vbase,
+		       (u32)card->evtbd_ring_pbase,
+		       (u32)((u64)card->evtbd_ring_pbase >> 32),
+		       card->evtbd_ring_size);
+
+	for (i = 0; i < MWIFIEX_MAX_EVT_BD; i++) {
+		card->evtbd_ring[i] = (struct mwifiex_pcie_buf_desc *)
+				(card->evtbd_ring_vbase +
+				(sizeof(struct mwifiex_pcie_buf_desc) * i));
+
+		/* Allocate skb here so that firmware can DMA data from it */
+		skb = dev_alloc_skb(MAX_EVENT_SIZE);
+		if (!skb) {
+			dev_err(adapter->dev, "Unable to allocate skb for EVENT buf.\n");
+			kfree(card->evtbd_ring_vbase);
+			return -ENOMEM;
+		}
+		buf_pa = mwifiex_update_sk_buff_pa(skb);
+		skb_put(skb, MAX_EVENT_SIZE);
+
+		dev_dbg(adapter->dev, "info: Evt ring: add new skb. base: %p, "
+			       "buf_base: %p, buf_pbase: %#x:%x, "
+			       "buf_len: %#x\n", skb, skb->data,
+			       (u32)*buf_pa, (u32)((u64)*buf_pa >> 32),
+			       skb->len);
+
+		card->evt_buf_list[i] = skb;
+		card->evtbd_ring[i]->paddr = *buf_pa;
+		card->evtbd_ring[i]->len = (u16)skb->len;
+		card->evtbd_ring[i]->flags = 0;
+	}
+
+	return 0;
+}
+
+/*
+ * This function deletes Buffer descriptor ring for Events
+ */
+static int mwifiex_pcie_delete_evtbd_ring(struct mwifiex_adapter *adapter)
+{
+	struct pcie_service_card *card = adapter->card;
+	int i;
+
+	for (i = 0; i < MWIFIEX_MAX_EVT_BD; i++) {
+		if (card->evt_buf_list[i])
+			dev_kfree_skb_any(card->evt_buf_list[i]);
+		card->evt_buf_list[i] = NULL;
+		card->evtbd_ring[i]->paddr = 0;
+		card->evtbd_ring[i]->len = 0;
+		card->evtbd_ring[i]->flags = 0;
+		card->evtbd_ring[i] = NULL;
+	}
+
+	kfree(card->evtbd_ring_vbase);
+	card->evtbd_wrptr = 0;
+	card->evtbd_rdptr = 0 | MWIFIEX_BD_FLAG_ROLLOVER_IND;
+	card->evtbd_ring_size = 0;
+	card->evtbd_ring_vbase = NULL;
+
+	return 0;
+}
+
+/*
+ * This function allocates a buffer for CMDRSP
+ */
+static int mwifiex_pcie_alloc_cmdrsp_buf(struct mwifiex_adapter *adapter)
+{
+	struct pcie_service_card *card = adapter->card;
+	struct sk_buff *skb;
+
+	/* Allocate memory for receiving command response data */
+	skb = dev_alloc_skb(MWIFIEX_UPLD_SIZE);
+	if (!skb) {
+		dev_err(adapter->dev, "Unable to allocate skb for command "
+				      "response data.\n");
+		return -ENOMEM;
+	}
+	mwifiex_update_sk_buff_pa(skb);
+	skb_put(skb, MWIFIEX_UPLD_SIZE);
+	card->cmdrsp_buf = skb;
+
+	skb = NULL;
+	/* Allocate memory for sending command to firmware */
+	skb = dev_alloc_skb(MWIFIEX_SIZE_OF_CMD_BUFFER);
+	if (!skb) {
+		dev_err(adapter->dev, "Unable to allocate skb for command "
+				      "data.\n");
+		return -ENOMEM;
+	}
+	mwifiex_update_sk_buff_pa(skb);
+	skb_put(skb, MWIFIEX_SIZE_OF_CMD_BUFFER);
+	card->cmd_buf = skb;
+
+	return 0;
+}
+
+/*
+ * This function deletes a buffer for CMDRSP
+ */
+static int mwifiex_pcie_delete_cmdrsp_buf(struct mwifiex_adapter *adapter)
+{
+	struct pcie_service_card *card;
+
+	if (!adapter)
+		return 0;
+
+	card = adapter->card;
+
+	if (card && card->cmdrsp_buf)
+		dev_kfree_skb_any(card->cmdrsp_buf);
+
+	if (card && card->cmd_buf)
+		dev_kfree_skb_any(card->cmd_buf);
+
+	return 0;
+}
+
+/*
+ * This function allocates a buffer for sleep cookie
+ */
+static int mwifiex_pcie_alloc_sleep_cookie_buf(struct mwifiex_adapter *adapter)
+{
+	struct sk_buff *skb;
+	struct pcie_service_card *card = adapter->card;
+
+	/* Allocate memory for sleep cookie */
+	skb = dev_alloc_skb(sizeof(u32));
+	if (!skb) {
+		dev_err(adapter->dev, "Unable to allocate skb for sleep "
+				      "cookie!\n");
+		return -ENOMEM;
+	}
+	mwifiex_update_sk_buff_pa(skb);
+	skb_put(skb, sizeof(u32));
+
+	/* Init val of Sleep Cookie */
+	*(u32 *)skb->data = FW_AWAKE_COOKIE;
+
+	dev_dbg(adapter->dev, "alloc_scook: sleep cookie=0x%x\n",
+				*((u32 *)skb->data));
+
+	/* Save the sleep cookie */
+	card->sleep_cookie = skb;
+
+	return 0;
+}
+
+/*
+ * This function deletes buffer for sleep cookie
+ */
+static int mwifiex_pcie_delete_sleep_cookie_buf(struct mwifiex_adapter *adapter)
+{
+	struct pcie_service_card *card;
+
+	if (!adapter)
+		return 0;
+
+	card = adapter->card;
+
+	if (card && card->sleep_cookie) {
+		dev_kfree_skb_any(card->sleep_cookie);
+		card->sleep_cookie = NULL;
+	}
+
+	return 0;
+}
+
+/*
+ * This function sends data buffer to device
+ */
+static int
+mwifiex_pcie_send_data(struct mwifiex_adapter *adapter, struct sk_buff *skb)
+{
+	struct pcie_service_card *card = adapter->card;
+	u32 wrindx, rdptr;
+	phys_addr_t *buf_pa;
+	__le16 *tmp;
+
+	if (!mwifiex_pcie_ok_to_access_hw(adapter))
+		mwifiex_pm_wakeup_card(adapter);
+
+	/* Read the TX ring read pointer set by firmware */
+	if (mwifiex_read_reg(adapter, REG_TXBD_RDPTR, &rdptr)) {
+		dev_err(adapter->dev, "SEND DATA: failed to read "
+				      "REG_TXBD_RDPTR\n");
+		return -1;
+	}
+
+	wrindx = card->txbd_wrptr & MWIFIEX_TXBD_MASK;
+
+	dev_dbg(adapter->dev, "info: SEND DATA: <Rd: %#x, Wr: %#x>\n", rdptr,
+				card->txbd_wrptr);
+	if (((card->txbd_wrptr & MWIFIEX_TXBD_MASK) !=
+			(rdptr & MWIFIEX_TXBD_MASK)) ||
+	    ((card->txbd_wrptr & MWIFIEX_BD_FLAG_ROLLOVER_IND) !=
+			(rdptr & MWIFIEX_BD_FLAG_ROLLOVER_IND))) {
+		struct sk_buff *skb_data;
+		u8 *payload;
+
+		adapter->data_sent = true;
+		skb_data = card->tx_buf_list[wrindx];
+		memcpy(skb_data->data, skb->data, skb->len);
+		payload = skb_data->data;
+		tmp = (__le16 *)&payload[0];
+		*tmp = cpu_to_le16((u16)skb->len);
+		tmp = (__le16 *)&payload[2];
+		*tmp = cpu_to_le16(MWIFIEX_TYPE_DATA);
+		skb_put(skb_data, MWIFIEX_RX_DATA_BUF_SIZE - skb_data->len);
+		skb_trim(skb_data, skb->len);
+		buf_pa = MWIFIEX_SKB_PACB(skb_data);
+		card->txbd_ring[wrindx]->paddr = *buf_pa;
+		card->txbd_ring[wrindx]->len = (u16)skb_data->len;
+		card->txbd_ring[wrindx]->flags = MWIFIEX_BD_FLAG_FIRST_DESC |
+						MWIFIEX_BD_FLAG_LAST_DESC;
+
+		if ((++card->txbd_wrptr & MWIFIEX_TXBD_MASK) ==
+							MWIFIEX_MAX_TXRX_BD)
+			card->txbd_wrptr = ((card->txbd_wrptr &
+						MWIFIEX_BD_FLAG_ROLLOVER_IND) ^
+						MWIFIEX_BD_FLAG_ROLLOVER_IND);
+
+		/* Write the TX ring write pointer in to REG_TXBD_WRPTR */
+		if (mwifiex_write_reg(adapter, REG_TXBD_WRPTR,
+							card->txbd_wrptr)) {
+			dev_err(adapter->dev, "SEND DATA: failed to write "
+					      "REG_TXBD_WRPTR\n");
+			return 0;
+		}
+
+		/* Send the TX ready interrupt */
+		if (mwifiex_write_reg(adapter, PCIE_CPU_INT_EVENT,
+				      CPU_INTR_DNLD_RDY)) {
+			dev_err(adapter->dev, "SEND DATA: failed to assert "
+					      "door-bell interrupt.\n");
+			return -1;
+		}
+		dev_dbg(adapter->dev, "info: SEND DATA: Updated <Rd: %#x, Wr: "
+				      "%#x> and sent packet to firmware "
+				      "successfully\n", rdptr,
+				      card->txbd_wrptr);
+	} else {
+		dev_dbg(adapter->dev, "info: TX Ring full, can't send anymore "
+				      "packets to firmware\n");
+		adapter->data_sent = true;
+		/* Send the TX ready interrupt */
+		if (mwifiex_write_reg(adapter, PCIE_CPU_INT_EVENT,
+				      CPU_INTR_DNLD_RDY))
+			dev_err(adapter->dev, "SEND DATA: failed to assert "
+					      "door-bell interrupt\n");
+		return -EBUSY;
+	}
+
+	return 0;
+}
+
+/*
+ * This function handles received buffer ring and
+ * dispatches packets to upper
+ */
+static int mwifiex_pcie_process_recv_data(struct mwifiex_adapter *adapter)
+{
+	struct pcie_service_card *card = adapter->card;
+	u32 wrptr, rd_index;
+	int ret = 0;
+	struct sk_buff *skb_tmp = NULL;
+
+	/* Read the RX ring Write pointer set by firmware */
+	if (mwifiex_read_reg(adapter, REG_RXBD_WRPTR, &wrptr)) {
+		dev_err(adapter->dev, "RECV DATA: failed to read "
+				      "REG_TXBD_RDPTR\n");
+		ret = -1;
+		goto done;
+	}
+
+	while (((wrptr & MWIFIEX_RXBD_MASK) !=
+		(card->rxbd_rdptr & MWIFIEX_RXBD_MASK)) ||
+	       ((wrptr & MWIFIEX_BD_FLAG_ROLLOVER_IND) ==
+		(card->rxbd_rdptr & MWIFIEX_BD_FLAG_ROLLOVER_IND))) {
+		struct sk_buff *skb_data;
+		u16 rx_len;
+
+		rd_index = card->rxbd_rdptr & MWIFIEX_RXBD_MASK;
+		skb_data = card->rx_buf_list[rd_index];
+
+		/* Get data length from interface header -
+		   first byte is len, second byte is type */
+		rx_len = *((u16 *)skb_data->data);
+		dev_dbg(adapter->dev, "info: RECV DATA: Rd=%#x, Wr=%#x, "
+				"Len=%d\n", card->rxbd_rdptr, wrptr, rx_len);
+		skb_tmp = dev_alloc_skb(rx_len);
+		if (!skb_tmp) {
+			dev_dbg(adapter->dev, "info: Failed to alloc skb "
+					      "for RX\n");
+			ret = -EBUSY;
+			goto done;
+		}
+
+		skb_put(skb_tmp, rx_len);
+
+		memcpy(skb_tmp->data, skb_data->data + INTF_HEADER_LEN, rx_len);
+		if ((++card->rxbd_rdptr & MWIFIEX_RXBD_MASK) ==
+							MWIFIEX_MAX_TXRX_BD) {
+			card->rxbd_rdptr = ((card->rxbd_rdptr &
+					     MWIFIEX_BD_FLAG_ROLLOVER_IND) ^
+					    MWIFIEX_BD_FLAG_ROLLOVER_IND);
+		}
+		dev_dbg(adapter->dev, "info: RECV DATA: <Rd: %#x, Wr: %#x>\n",
+				card->rxbd_rdptr, wrptr);
+
+		/* Write the RX ring read pointer in to REG_RXBD_RDPTR */
+		if (mwifiex_write_reg(adapter, REG_RXBD_RDPTR,
+				      card->rxbd_rdptr)) {
+			dev_err(adapter->dev, "RECV DATA: failed to "
+					      "write REG_RXBD_RDPTR\n");
+			ret = -1;
+			goto done;
+		}
+
+		/* Read the RX ring Write pointer set by firmware */
+		if (mwifiex_read_reg(adapter, REG_RXBD_WRPTR, &wrptr)) {
+			dev_err(adapter->dev, "RECV DATA: failed to read "
+					      "REG_TXBD_RDPTR\n");
+			ret = -1;
+			goto done;
+		}
+		dev_dbg(adapter->dev, "info: RECV DATA: Received packet from "
+				      "firmware successfully\n");
+		mwifiex_handle_rx_packet(adapter, skb_tmp);
+	}
+
+done:
+	if (ret && skb_tmp)
+		dev_kfree_skb_any(skb_tmp);
+	return ret;
+}
+
+/*
+ * This function downloads the boot command to device
+ */
+static int
+mwifiex_pcie_send_boot_cmd(struct mwifiex_adapter *adapter, struct sk_buff *skb)
+{
+	phys_addr_t *buf_pa = MWIFIEX_SKB_PACB(skb);
+
+	if (!(skb->data && skb->len && *buf_pa)) {
+		dev_err(adapter->dev, "Invalid parameter in %s <%p, %#x:%x, "
+				"%x>\n", __func__, skb->data, skb->len,
+				(u32)*buf_pa, (u32)((u64)*buf_pa >> 32));
+		return -1;
+	}
+
+	/* Write the lower 32bits of the physical address to scratch
+	 * register 0 */
+	if (mwifiex_write_reg(adapter, PCIE_SCRATCH_0_REG, (u32)*buf_pa)) {
+		dev_err(adapter->dev, "%s: failed to write download command "
+				      "to boot code.\n", __func__);
+		return -1;
+	}
+
+	/* Write the upper 32bits of the physical address to scratch
+	 * register 1 */
+	if (mwifiex_write_reg(adapter, PCIE_SCRATCH_1_REG,
+			      (u32)((u64)*buf_pa >> 32))) {
+		dev_err(adapter->dev, "%s: failed to write download command "
+				      "to boot code.\n", __func__);
+		return -1;
+	}
+
+	/* Write the command length to scratch register 2 */
+	if (mwifiex_write_reg(adapter, PCIE_SCRATCH_2_REG, skb->len)) {
+		dev_err(adapter->dev, "%s: failed to write command length to "
+				      "scratch register 2\n", __func__);
+		return -1;
+	}
+
+	/* Ring the door bell */
+	if (mwifiex_write_reg(adapter, PCIE_CPU_INT_EVENT,
+			      CPU_INTR_DOOR_BELL)) {
+		dev_err(adapter->dev, "%s: failed to assert door-bell "
+				      "interrupt.\n", __func__);
+		return -1;
+	}
+
+	return 0;
+}
+
+/*
+ * This function downloads commands to the device
+ */
+static int
+mwifiex_pcie_send_cmd(struct mwifiex_adapter *adapter, struct sk_buff *skb)
+{
+	struct pcie_service_card *card = adapter->card;
+	int ret = 0;
+	phys_addr_t *cmd_buf_pa;
+	phys_addr_t *cmdrsp_buf_pa;
+
+	if (!(skb->data && skb->len)) {
+		dev_err(adapter->dev, "Invalid parameter in %s <%p, %#x>\n",
+				      __func__, skb->data, skb->len);
+		return -1;
+	}
+
+	/* Make sure a command response buffer is available */
+	if (!card->cmdrsp_buf) {
+		dev_err(adapter->dev, "No response buffer available, send "
+				      "command failed\n");
+		return -EBUSY;
+	}
+
+	/* Make sure a command buffer is available */
+	if (!card->cmd_buf) {
+		dev_err(adapter->dev, "Command buffer not available\n");
+		return -EBUSY;
+	}
+
+	adapter->cmd_sent = true;
+	/* Copy the given skb in to DMA accessable shared buffer */
+	skb_put(card->cmd_buf, MWIFIEX_SIZE_OF_CMD_BUFFER - card->cmd_buf->len);
+	skb_trim(card->cmd_buf, skb->len);
+	memcpy(card->cmd_buf->data, skb->data, skb->len);
+
+	/* To send a command, the driver will:
+		1. Write the 64bit physical address of the data buffer to
+		   SCRATCH1 + SCRATCH0
+		2. Ring the door bell (i.e. set the door bell interrupt)
+
+		In response to door bell interrupt, the firmware will perform
+		the DMA of the command packet (first header to obtain the total
+		length and then rest of the command).
+	*/
+
+	if (card->cmdrsp_buf) {
+		cmdrsp_buf_pa = MWIFIEX_SKB_PACB(card->cmdrsp_buf);
+		/* Write the lower 32bits of the cmdrsp buffer physical
+		   address */
+		if (mwifiex_write_reg(adapter, REG_CMDRSP_ADDR_LO,
+					(u32)*cmdrsp_buf_pa)) {
+			dev_err(adapter->dev, "Failed to write download command to boot code.\n");
+			ret = -1;
+			goto done;
+		}
+		/* Write the upper 32bits of the cmdrsp buffer physical
+		   address */
+		if (mwifiex_write_reg(adapter, REG_CMDRSP_ADDR_HI,
+					(u32)((u64)*cmdrsp_buf_pa >> 32))) {
+			dev_err(adapter->dev, "Failed to write download command"
+					      " to boot code.\n");
+			ret = -1;
+			goto done;
+		}
+	}
+
+	cmd_buf_pa = MWIFIEX_SKB_PACB(card->cmd_buf);
+	/* Write the lower 32bits of the physical address to REG_CMD_ADDR_LO */
+	if (mwifiex_write_reg(adapter, REG_CMD_ADDR_LO,
+				(u32)*cmd_buf_pa)) {
+		dev_err(adapter->dev, "Failed to write download command "
+				      "to boot code.\n");
+		ret = -1;
+		goto done;
+	}
+	/* Write the upper 32bits of the physical address to REG_CMD_ADDR_HI */
+	if (mwifiex_write_reg(adapter, REG_CMD_ADDR_HI,
+				(u32)((u64)*cmd_buf_pa >> 32))) {
+		dev_err(adapter->dev, "Failed to write download command "
+				      "to boot code.\n");
+		ret = -1;
+		goto done;
+	}
+
+	/* Write the command length to REG_CMD_SIZE */
+	if (mwifiex_write_reg(adapter, REG_CMD_SIZE,
+				card->cmd_buf->len)) {
+		dev_err(adapter->dev, "Failed to write command length to "
+				      "REG_CMD_SIZE\n");
+		ret = -1;
+		goto done;
+	}
+
+	/* Ring the door bell */
+	if (mwifiex_write_reg(adapter, PCIE_CPU_INT_EVENT,
+			      CPU_INTR_DOOR_BELL)) {
+		dev_err(adapter->dev, "Failed to assert door-bell "
+				      "interrupt.\n");
+		ret = -1;
+		goto done;
+	}
+
+done:
+	if (ret)
+		adapter->cmd_sent = false;
+
+	return 0;
+}
+
+/*
+ * This function handles command complete interrupt
+ */
+static int mwifiex_pcie_process_cmd_complete(struct mwifiex_adapter *adapter)
+{
+	struct pcie_service_card *card = adapter->card;
+	int count = 0;
+
+	dev_dbg(adapter->dev, "info: Rx CMD Response\n");
+
+	if (!adapter->curr_cmd) {
+		skb_pull(card->cmdrsp_buf, INTF_HEADER_LEN);
+		if (adapter->ps_state == PS_STATE_SLEEP_CFM) {
+			mwifiex_process_sleep_confirm_resp(adapter,
+					card->cmdrsp_buf->data,
+					card->cmdrsp_buf->len);
+			while (mwifiex_pcie_ok_to_access_hw(adapter) &&
+							(count++ < 10))
+				udelay(50);
+		} else {
+			dev_err(adapter->dev, "There is no command but "
+					      "got cmdrsp\n");
+		}
+		memcpy(adapter->upld_buf, card->cmdrsp_buf->data,
+		       min_t(u32, MWIFIEX_SIZE_OF_CMD_BUFFER,
+			     card->cmdrsp_buf->len));
+		skb_push(card->cmdrsp_buf, INTF_HEADER_LEN);
+	} else if (mwifiex_pcie_ok_to_access_hw(adapter)) {
+		skb_pull(card->cmdrsp_buf, INTF_HEADER_LEN);
+		adapter->curr_cmd->resp_skb = card->cmdrsp_buf;
+		adapter->cmd_resp_received = true;
+		/* Take the pointer and set it to CMD node and will
+		   return in the response complete callback */
+		card->cmdrsp_buf = NULL;
+
+		/* Clear the cmd-rsp buffer address in scratch registers. This
+		   will prevent firmware from writing to the same response
+		   buffer again. */
+		if (mwifiex_write_reg(adapter, REG_CMDRSP_ADDR_LO, 0)) {
+			dev_err(adapter->dev, "cmd_done: failed to clear "
+					      "cmd_rsp address.\n");
+			return -1;
+		}
+		/* Write the upper 32bits of the cmdrsp buffer physical
+		   address */
+		if (mwifiex_write_reg(adapter, REG_CMDRSP_ADDR_HI, 0)) {
+			dev_err(adapter->dev, "cmd_done: failed to clear "
+					      "cmd_rsp address.\n");
+			return -1;
+		}
+	}
+
+	return 0;
+}
+
+/*
+ * Command Response processing complete handler
+ */
+static int mwifiex_pcie_cmdrsp_complete(struct mwifiex_adapter *adapter,
+					struct sk_buff *skb)
+{
+	struct pcie_service_card *card = adapter->card;
+
+	if (skb) {
+		card->cmdrsp_buf = skb;
+		skb_push(card->cmdrsp_buf, INTF_HEADER_LEN);
+	}
+
+	return 0;
+}
+
+/*
+ * This function handles firmware event ready interrupt
+ */
+static int mwifiex_pcie_process_event_ready(struct mwifiex_adapter *adapter)
+{
+	struct pcie_service_card *card = adapter->card;
+	u32 rdptr = card->evtbd_rdptr & MWIFIEX_EVTBD_MASK;
+	u32 wrptr, event;
+
+	if (adapter->event_received) {
+		dev_dbg(adapter->dev, "info: Event being processed, "\
+				"do not process this interrupt just yet\n");
+		return 0;
+	}
+
+	if (rdptr >= MWIFIEX_MAX_EVT_BD) {
+		dev_dbg(adapter->dev, "info: Invalid read pointer...\n");
+		return -1;
+	}
+
+	/* Read the event ring write pointer set by firmware */
+	if (mwifiex_read_reg(adapter, REG_EVTBD_WRPTR, &wrptr)) {
+		dev_err(adapter->dev, "EventReady: failed to read REG_EVTBD_WRPTR\n");
+		return -1;
+	}
+
+	dev_dbg(adapter->dev, "info: EventReady: Initial <Rd: 0x%x, Wr: 0x%x>",
+			card->evtbd_rdptr, wrptr);
+	if (((wrptr & MWIFIEX_EVTBD_MASK) !=
+	     (card->evtbd_rdptr & MWIFIEX_EVTBD_MASK)) ||
+	    ((wrptr & MWIFIEX_BD_FLAG_ROLLOVER_IND) ==
+	     (card->evtbd_rdptr & MWIFIEX_BD_FLAG_ROLLOVER_IND))) {
+		struct sk_buff *skb_cmd;
+		__le16 data_len = 0;
+		u16 evt_len;
+
+		dev_dbg(adapter->dev, "info: Read Index: %d\n", rdptr);
+		skb_cmd = card->evt_buf_list[rdptr];
+		/* Take the pointer and set it to event pointer in adapter
+		   and will return back after event handling callback */
+		card->evt_buf_list[rdptr] = NULL;
+		card->evtbd_ring[rdptr]->paddr = 0;
+		card->evtbd_ring[rdptr]->len = 0;
+		card->evtbd_ring[rdptr]->flags = 0;
+
+		event = *(u32 *) &skb_cmd->data[INTF_HEADER_LEN];
+		adapter->event_cause = event;
+		/* The first 4bytes will be the event transfer header
+		   len is 2 bytes followed by type which is 2 bytes */
+		memcpy(&data_len, skb_cmd->data, sizeof(__le16));
+		evt_len = le16_to_cpu(data_len);
+
+		skb_pull(skb_cmd, INTF_HEADER_LEN);
+		dev_dbg(adapter->dev, "info: Event length: %d\n", evt_len);
+
+		if ((evt_len > 0) && (evt_len  < MAX_EVENT_SIZE))
+			memcpy(adapter->event_body, skb_cmd->data +
+			       MWIFIEX_EVENT_HEADER_LEN, evt_len -
+			       MWIFIEX_EVENT_HEADER_LEN);
+
+		adapter->event_received = true;
+		adapter->event_skb = skb_cmd;
+
+		/* Do not update the event read pointer here, wait till the
+		   buffer is released. This is just to make things simpler,
+		   we need to find a better method of managing these buffers.
+		*/
+	}
+
+	return 0;
+}
+
+/*
+ * Event processing complete handler
+ */
+static int mwifiex_pcie_event_complete(struct mwifiex_adapter *adapter,
+				       struct sk_buff *skb)
+{
+	struct pcie_service_card *card = adapter->card;
+	int ret = 0;
+	u32 rdptr = card->evtbd_rdptr & MWIFIEX_EVTBD_MASK;
+	u32 wrptr;
+	phys_addr_t *buf_pa;
+
+	if (!skb)
+		return 0;
+
+	if (rdptr >= MWIFIEX_MAX_EVT_BD)
+		dev_err(adapter->dev, "event_complete: Invalid rdptr 0x%x\n",
+					rdptr);
+
+	/* Read the event ring write pointer set by firmware */
+	if (mwifiex_read_reg(adapter, REG_EVTBD_WRPTR, &wrptr)) {
+		dev_err(adapter->dev, "event_complete: failed to read REG_EVTBD_WRPTR\n");
+		ret = -1;
+		goto done;
+	}
+
+	if (!card->evt_buf_list[rdptr]) {
+		skb_push(skb, INTF_HEADER_LEN);
+		card->evt_buf_list[rdptr] = skb;
+		buf_pa = MWIFIEX_SKB_PACB(skb);
+		card->evtbd_ring[rdptr]->paddr = *buf_pa;
+		card->evtbd_ring[rdptr]->len = (u16)skb->len;
+		card->evtbd_ring[rdptr]->flags = 0;
+		skb = NULL;
+	} else {
+		dev_dbg(adapter->dev, "info: ERROR: Buffer is still valid at "
+				      "index %d, <%p, %p>\n", rdptr,
+				      card->evt_buf_list[rdptr], skb);
+	}
+
+	if ((++card->evtbd_rdptr & MWIFIEX_EVTBD_MASK) == MWIFIEX_MAX_EVT_BD) {
+		card->evtbd_rdptr = ((card->evtbd_rdptr &
+					MWIFIEX_BD_FLAG_ROLLOVER_IND) ^
+					MWIFIEX_BD_FLAG_ROLLOVER_IND);
+	}
+
+	dev_dbg(adapter->dev, "info: Updated <Rd: 0x%x, Wr: 0x%x>",
+				card->evtbd_rdptr, wrptr);
+
+	/* Write the event ring read pointer in to REG_EVTBD_RDPTR */
+	if (mwifiex_write_reg(adapter, REG_EVTBD_RDPTR, card->evtbd_rdptr)) {
+		dev_err(adapter->dev, "event_complete: failed to read REG_EVTBD_RDPTR\n");
+		ret = -1;
+		goto done;
+	}
+
+done:
+	/* Free the buffer for failure case */
+	if (ret && skb)
+		dev_kfree_skb_any(skb);
+
+	dev_dbg(adapter->dev, "info: Check Events Again\n");
+	ret = mwifiex_pcie_process_event_ready(adapter);
+
+	return ret;
+}
+
+/*
+ * This function downloads the firmware to the card.
+ *
+ * Firmware is downloaded to the card in blocks. Every block download
+ * is tested for CRC errors, and retried a number of times before
+ * returning failure.
+ */
+static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
+				    struct mwifiex_fw_image *fw)
+{
+	int ret;
+	u8 *firmware = fw->fw_buf;
+	u32 firmware_len = fw->fw_len;
+	u32 offset = 0;
+	struct sk_buff *skb;
+	u32 txlen, tx_blocks = 0, tries, len;
+	u32 block_retry_cnt = 0;
+
+	if (!adapter) {
+		pr_err("adapter structure is not valid\n");
+		return -1;
+	}
+
+	if (!firmware || !firmware_len) {
+		dev_err(adapter->dev, "No firmware image found! "
+				      "Terminating download\n");
+		return -1;
+	}
+
+	dev_dbg(adapter->dev, "info: Downloading FW image (%d bytes)\n",
+				firmware_len);
+
+	if (mwifiex_pcie_disable_host_int(adapter)) {
+		dev_err(adapter->dev, "%s: Disabling interrupts"
+				      " failed.\n", __func__);
+		return -1;
+	}
+
+	skb = dev_alloc_skb(MWIFIEX_UPLD_SIZE);
+	if (!skb) {
+		ret = -ENOMEM;
+		goto done;
+	}
+	mwifiex_update_sk_buff_pa(skb);
+
+	/* Perform firmware data transfer */
+	do {
+		u32 ireg_intr = 0;
+
+		/* More data? */
+		if (offset >= firmware_len)
+			break;
+
+		for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
+			ret = mwifiex_read_reg(adapter, PCIE_SCRATCH_2_REG,
+					       &len);
+			if (ret) {
+				dev_warn(adapter->dev, "Failed reading length from boot code\n");
+				goto done;
+			}
+			if (len)
+				break;
+			udelay(10);
+		}
+
+		if (!len) {
+			break;
+		} else if (len > MWIFIEX_UPLD_SIZE) {
+			pr_err("FW download failure @ %d, invalid length %d\n",
+				offset, len);
+			ret = -1;
+			goto done;
+		}
+
+		txlen = len;
+
+		if (len & BIT(0)) {
+			block_retry_cnt++;
+			if (block_retry_cnt > MAX_WRITE_IOMEM_RETRY) {
+				pr_err("FW download failure @ %d, over max "
+				       "retry count\n", offset);
+				ret = -1;
+				goto done;
+			}
+			dev_err(adapter->dev, "FW CRC error indicated by the "
+					      "helper: len = 0x%04X, txlen = "
+					      "%d\n", len, txlen);
+			len &= ~BIT(0);
+			/* Setting this to 0 to resend from same offset */
+			txlen = 0;
+		} else {
+			block_retry_cnt = 0;
+			/* Set blocksize to transfer - checking for
+			   last block */
+			if (firmware_len - offset < txlen)
+				txlen = firmware_len - offset;
+
+			dev_dbg(adapter->dev, ".");
+
+			tx_blocks =
+				(txlen + MWIFIEX_PCIE_BLOCK_SIZE_FW_DNLD - 1) /
+				MWIFIEX_PCIE_BLOCK_SIZE_FW_DNLD;
+
+			/* Copy payload to buffer */
+			memmove(skb->data, &firmware[offset], txlen);
+		}
+
+		skb_put(skb, MWIFIEX_UPLD_SIZE - skb->len);
+		skb_trim(skb, tx_blocks * MWIFIEX_PCIE_BLOCK_SIZE_FW_DNLD);
+
+		/* Send the boot command to device */
+		if (mwifiex_pcie_send_boot_cmd(adapter, skb)) {
+			dev_err(adapter->dev, "Failed to send firmware download command\n");
+			ret = -1;
+			goto done;
+		}
+		/* Wait for the command done interrupt */
+		do {
+			if (mwifiex_read_reg(adapter, PCIE_CPU_INT_STATUS,
+					     &ireg_intr)) {
+				dev_err(adapter->dev, "%s: Failed to read "
+						      "interrupt status during "
+						      "fw dnld.\n", __func__);
+				ret = -1;
+				goto done;
+			}
+		} while ((ireg_intr & CPU_INTR_DOOR_BELL) ==
+			 CPU_INTR_DOOR_BELL);
+		offset += txlen;
+	} while (true);
+
+	dev_dbg(adapter->dev, "info:\nFW download over, size %d bytes\n",
+				offset);
+
+	ret = 0;
+
+done:
+	dev_kfree_skb_any(skb);
+	return ret;
+}
+
+/*
+ * This function checks the firmware status in card.
+ *
+ * The winner interface is also determined by this function.
+ */
+static int
+mwifiex_check_fw_status(struct mwifiex_adapter *adapter, u32 poll_num)
+{
+	int ret = 0;
+	u32 firmware_stat, winner_status;
+	u32 tries;
+
+	/* Mask spurios interrupts */
+	if (mwifiex_write_reg(adapter, PCIE_HOST_INT_STATUS_MASK,
+				HOST_INTR_MASK)) {
+		dev_warn(adapter->dev, "Write register failed\n");
+		return -1;
+	}
+
+	dev_dbg(adapter->dev, "Setting driver ready signature\n");
+	if (mwifiex_write_reg(adapter, REG_DRV_READY, FIRMWARE_READY_PCIE)) {
+		dev_err(adapter->dev, "Failed to write driver ready signature\n");
+		return -1;
+	}
+
+	/* Wait for firmware initialization event */
+	for (tries = 0; tries < poll_num; tries++) {
+		if (mwifiex_read_reg(adapter, PCIE_SCRATCH_3_REG,
+				     &firmware_stat))
+			ret = -1;
+		else
+			ret = 0;
+		if (ret)
+			continue;
+		if (firmware_stat == FIRMWARE_READY_PCIE) {
+			ret = 0;
+			break;
+		} else {
+			mdelay(100);
+			ret = -1;
+		}
+	}
+
+	if (ret) {
+		if (mwifiex_read_reg(adapter, PCIE_SCRATCH_3_REG,
+				     &winner_status))
+			ret = -1;
+		else if (!winner_status) {
+			dev_err(adapter->dev, "PCI-E is the winner\n");
+			adapter->winner = 1;
+			ret = -1;
+		} else {
+			dev_err(adapter->dev, "PCI-E is not the winner <%#x, %d>, exit download\n",
+					ret, adapter->winner);
+			ret = 0;
+		}
+	}
+
+	return ret;
+}
+
+/*
+ * This function reads the interrupt status from card.
+ */
+static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter)
+{
+	u32 pcie_ireg;
+	unsigned long flags;
+
+	if (!mwifiex_pcie_ok_to_access_hw(adapter))
+		return;
+
+	if (mwifiex_read_reg(adapter, PCIE_HOST_INT_STATUS, &pcie_ireg)) {
+		dev_warn(adapter->dev, "Read register failed\n");
+		return;
+	}
+
+	if ((pcie_ireg != 0xFFFFFFFF) && (pcie_ireg)) {
+
+		mwifiex_pcie_disable_host_int(adapter);
+
+		/* Clear the pending interrupts */
+		if (mwifiex_write_reg(adapter, PCIE_HOST_INT_STATUS,
+				      ~pcie_ireg)) {
+			dev_warn(adapter->dev, "Write register failed\n");
+			return;
+		}
+		spin_lock_irqsave(&adapter->int_lock, flags);
+		adapter->int_status |= pcie_ireg;
+		spin_unlock_irqrestore(&adapter->int_lock, flags);
+
+		if (pcie_ireg & HOST_INTR_CMD_DONE) {
+			if ((adapter->ps_state == PS_STATE_SLEEP_CFM) ||
+			    (adapter->ps_state == PS_STATE_SLEEP)) {
+				mwifiex_pcie_enable_host_int(adapter);
+				if (mwifiex_write_reg(adapter,
+						PCIE_CPU_INT_EVENT,
+						CPU_INTR_SLEEP_CFM_DONE)) {
+					dev_warn(adapter->dev, "Write register"
+							       " failed\n");
+					return;
+
+				}
+			}
+		} else if (!adapter->pps_uapsd_mode &&
+			   adapter->ps_state == PS_STATE_SLEEP) {
+				/* Potentially for PCIe we could get other
+				 * interrupts like shared. Don't change power
+				 * state until cookie is set */
+				if (mwifiex_pcie_ok_to_access_hw(adapter))
+					adapter->ps_state = PS_STATE_AWAKE;
+		}
+	}
+}
+
+/*
+ * Interrupt handler for PCIe root port
+ *
+ * This function reads the interrupt status from firmware and assigns
+ * the main process in workqueue which will handle the interrupt.
+ */
+static irqreturn_t mwifiex_pcie_interrupt(int irq, void *context)
+{
+	struct pci_dev *pdev = (struct pci_dev *)context;
+	struct pcie_service_card *card;
+	struct mwifiex_adapter *adapter;
+
+	if (!pdev) {
+		pr_debug("info: %s: pdev is NULL\n", (u8 *)pdev);
+		goto exit;
+	}
+
+	card = (struct pcie_service_card *) pci_get_drvdata(pdev);
+	if (!card || !card->adapter) {
+		pr_debug("info: %s: card=%p adapter=%p\n", __func__, card,
+						card ? card->adapter : NULL);
+		goto exit;
+	}
+	adapter = card->adapter;
+
+	if (adapter->surprise_removed)
+		goto exit;
+
+	mwifiex_interrupt_status(adapter);
+	queue_work(adapter->workqueue, &adapter->main_work);
+
+exit:
+	return IRQ_HANDLED;
+}
+
+/*
+ * This function checks the current interrupt status.
+ *
+ * The following interrupts are checked and handled by this function -
+ *      - Data sent
+ *      - Command sent
+ *      - Command received
+ *      - Packets received
+ *      - Events received
+ *
+ * In case of Rx packets received, the packets are uploaded from card to
+ * host and processed accordingly.
+ */
+static int mwifiex_process_int_status(struct mwifiex_adapter *adapter)
+{
+	int ret;
+	u32 pcie_ireg = 0;
+	unsigned long flags;
+
+	spin_lock_irqsave(&adapter->int_lock, flags);
+	/* Clear out unused interrupts */
+	adapter->int_status &= HOST_INTR_MASK;
+	spin_unlock_irqrestore(&adapter->int_lock, flags);
+
+	while (adapter->int_status & HOST_INTR_MASK) {
+		if (adapter->int_status & HOST_INTR_DNLD_DONE) {
+			adapter->int_status &= ~HOST_INTR_DNLD_DONE;
+			if (adapter->data_sent) {
+				dev_dbg(adapter->dev, "info: DATA sent Interrupt\n");
+				adapter->data_sent = false;
+			}
+		}
+		if (adapter->int_status & HOST_INTR_UPLD_RDY) {
+			adapter->int_status &= ~HOST_INTR_UPLD_RDY;
+			dev_dbg(adapter->dev, "info: Rx DATA\n");
+			ret = mwifiex_pcie_process_recv_data(adapter);
+			if (ret)
+				return ret;
+		}
+		if (adapter->int_status & HOST_INTR_EVENT_RDY) {
+			adapter->int_status &= ~HOST_INTR_EVENT_RDY;
+			dev_dbg(adapter->dev, "info: Rx EVENT\n");
+			ret = mwifiex_pcie_process_event_ready(adapter);
+			if (ret)
+				return ret;
+		}
+
+		if (adapter->int_status & HOST_INTR_CMD_DONE) {
+			adapter->int_status &= ~HOST_INTR_CMD_DONE;
+			if (adapter->cmd_sent) {
+				dev_dbg(adapter->dev, "info: CMD sent Interrupt\n");
+				adapter->cmd_sent = false;
+			}
+			/* Handle command response */
+			ret = mwifiex_pcie_process_cmd_complete(adapter);
+			if (ret)
+				return ret;
+		}
+
+		if (mwifiex_pcie_ok_to_access_hw(adapter)) {
+			if (mwifiex_read_reg(adapter, PCIE_HOST_INT_STATUS,
+					     &pcie_ireg)) {
+				dev_warn(adapter->dev, "Read register failed\n");
+				return -1;
+			}
+
+			if ((pcie_ireg != 0xFFFFFFFF) && (pcie_ireg)) {
+				if (mwifiex_write_reg(adapter,
+					PCIE_HOST_INT_STATUS, ~pcie_ireg)) {
+					dev_warn(adapter->dev, "Write register"
+							       " failed\n");
+					return -1;
+				}
+				adapter->int_status |= pcie_ireg;
+				adapter->int_status &= HOST_INTR_MASK;
+			}
+
+		}
+	}
+	dev_dbg(adapter->dev, "info: cmd_sent=%d data_sent=%d\n",
+	       adapter->cmd_sent, adapter->data_sent);
+	mwifiex_pcie_enable_host_int(adapter);
+
+	return 0;
+}
+
+/*
+ * This function downloads data from driver to card.
+ *
+ * Both commands and data packets are transferred to the card by this
+ * function.
+ *
+ * This function adds the PCIE specific header to the front of the buffer
+ * before transferring. The header contains the length of the packet and
+ * the type. The firmware handles the packets based upon this set type.
+ */
+static int mwifiex_pcie_host_to_card(struct mwifiex_adapter *adapter, u8 type,
+				     struct sk_buff *skb,
+				     struct mwifiex_tx_param *tx_param)
+{
+	if (!adapter || !skb) {
+		dev_err(adapter->dev, "Invalid parameter in %s <%p, %p>\n",
+				__func__, adapter, skb);
+		return -1;
+	}
+
+	if (type == MWIFIEX_TYPE_DATA)
+		return mwifiex_pcie_send_data(adapter, skb);
+	else if (type == MWIFIEX_TYPE_CMD)
+		return mwifiex_pcie_send_cmd(adapter, skb);
+
+	return 0;
+}
+
+/*
+ * This function initializes the PCI-E host memory space, WCB rings, etc.
+ *
+ * The following initializations steps are followed -
+ *      - Allocate TXBD ring buffers
+ *      - Allocate RXBD ring buffers
+ *      - Allocate event BD ring buffers
+ *      - Allocate command response ring buffer
+ *      - Allocate sleep cookie buffer
+ */
+static int mwifiex_pcie_init(struct mwifiex_adapter *adapter)
+{
+	struct pcie_service_card *card = adapter->card;
+	int ret;
+	struct pci_dev *pdev = card->dev;
+
+	pci_set_drvdata(pdev, card);
+
+	ret = pci_enable_device(pdev);
+	if (ret)
+		goto err_enable_dev;
+
+	pci_set_master(pdev);
+
+	dev_dbg(adapter->dev, "try set_consistent_dma_mask(32)\n");
+	ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+	if (ret) {
+		dev_err(adapter->dev, "set_dma_mask(32) failed\n");
+		goto err_set_dma_mask;
+	}
+
+	ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
+	if (ret) {
+		dev_err(adapter->dev, "set_consistent_dma_mask(64) failed\n");
+		goto err_set_dma_mask;
+	}
+
+	ret = pci_request_region(pdev, 0, DRV_NAME);
+	if (ret) {
+		dev_err(adapter->dev, "req_reg(0) error\n");
+		goto err_req_region0;
+	}
+	card->pci_mmap = pci_iomap(pdev, 0, 0);
+	if (!card->pci_mmap) {
+		dev_err(adapter->dev, "iomap(0) error\n");
+		goto err_iomap0;
+	}
+	ret = pci_request_region(pdev, 2, DRV_NAME);
+	if (ret) {
+		dev_err(adapter->dev, "req_reg(2) error\n");
+		goto err_req_region2;
+	}
+	card->pci_mmap1 = pci_iomap(pdev, 2, 0);
+	if (!card->pci_mmap1) {
+		dev_err(adapter->dev, "iomap(2) error\n");
+		goto err_iomap2;
+	}
+
+	dev_dbg(adapter->dev, "PCI memory map Virt0: %p PCI memory map Virt2: "
+			      "%p\n", card->pci_mmap, card->pci_mmap1);
+
+	card->cmdrsp_buf = NULL;
+	ret = mwifiex_pcie_create_txbd_ring(adapter);
+	if (ret)
+		goto err_cre_txbd;
+	ret = mwifiex_pcie_create_rxbd_ring(adapter);
+	if (ret)
+		goto err_cre_rxbd;
+	ret = mwifiex_pcie_create_evtbd_ring(adapter);
+	if (ret)
+		goto err_cre_evtbd;
+	ret = mwifiex_pcie_alloc_cmdrsp_buf(adapter);
+	if (ret)
+		goto err_alloc_cmdbuf;
+	ret = mwifiex_pcie_alloc_sleep_cookie_buf(adapter);
+	if (ret)
+		goto err_alloc_cookie;
+
+	return ret;
+
+err_alloc_cookie:
+	mwifiex_pcie_delete_cmdrsp_buf(adapter);
+err_alloc_cmdbuf:
+	mwifiex_pcie_delete_evtbd_ring(adapter);
+err_cre_evtbd:
+	mwifiex_pcie_delete_rxbd_ring(adapter);
+err_cre_rxbd:
+	mwifiex_pcie_delete_txbd_ring(adapter);
+err_cre_txbd:
+	pci_iounmap(pdev, card->pci_mmap1);
+err_iomap2:
+	pci_release_region(pdev, 2);
+err_req_region2:
+	pci_iounmap(pdev, card->pci_mmap);
+err_iomap0:
+	pci_release_region(pdev, 0);
+err_req_region0:
+err_set_dma_mask:
+	pci_disable_device(pdev);
+err_enable_dev:
+	pci_set_drvdata(pdev, NULL);
+	return ret;
+}
+
+/*
+ * This function cleans up the allocated card buffers.
+ *
+ * The following are freed by this function -
+ *      - TXBD ring buffers
+ *      - RXBD ring buffers
+ *      - Event BD ring buffers
+ *      - Command response ring buffer
+ *      - Sleep cookie buffer
+ */
+static void mwifiex_pcie_cleanup(struct mwifiex_adapter *adapter)
+{
+	struct pcie_service_card *card = adapter->card;
+	struct pci_dev *pdev = card->dev;
+
+	mwifiex_pcie_delete_sleep_cookie_buf(adapter);
+	mwifiex_pcie_delete_cmdrsp_buf(adapter);
+	mwifiex_pcie_delete_evtbd_ring(adapter);
+	mwifiex_pcie_delete_rxbd_ring(adapter);
+	mwifiex_pcie_delete_txbd_ring(adapter);
+	card->cmdrsp_buf = NULL;
+
+	dev_dbg(adapter->dev, "Clearing driver ready signature\n");
+	if (user_rmmod) {
+		if (mwifiex_write_reg(adapter, REG_DRV_READY, 0x00000000))
+			dev_err(adapter->dev, "Failed to write driver not-ready signature\n");
+	}
+
+	if (pdev) {
+		pci_iounmap(pdev, card->pci_mmap);
+		pci_iounmap(pdev, card->pci_mmap1);
+
+		pci_release_regions(pdev);
+		pci_disable_device(pdev);
+		pci_set_drvdata(pdev, NULL);
+	}
+}
+
+/*
+ * This function registers the PCIE device.
+ *
+ * PCIE IRQ is claimed, block size is set and driver data is initialized.
+ */
+static int mwifiex_register_dev(struct mwifiex_adapter *adapter)
+{
+	int ret;
+	struct pcie_service_card *card = adapter->card;
+	struct pci_dev *pdev = card->dev;
+
+	/* save adapter pointer in card */
+	card->adapter = adapter;
+
+	ret = request_irq(pdev->irq, mwifiex_pcie_interrupt, IRQF_SHARED,
+			  "MRVL_PCIE", pdev);
+	if (ret) {
+		pr_err("request_irq failed: ret=%d\n", ret);
+		adapter->card = NULL;
+		return -1;
+	}
+
+	adapter->dev = &pdev->dev;
+	strcpy(adapter->fw_name, PCIE8766_DEFAULT_FW_NAME);
+
+	return 0;
+}
+
+/*
+ * This function unregisters the PCIE device.
+ *
+ * The PCIE IRQ is released, the function is disabled and driver
+ * data is set to null.
+ */
+static void mwifiex_unregister_dev(struct mwifiex_adapter *adapter)
+{
+	struct pcie_service_card *card = adapter->card;
+
+	if (card) {
+		dev_dbg(adapter->dev, "%s(): calling free_irq()\n", __func__);
+		free_irq(card->dev->irq, card->dev);
+	}
+}
+
+static struct mwifiex_if_ops pcie_ops = {
+	.init_if =			mwifiex_pcie_init,
+	.cleanup_if =			mwifiex_pcie_cleanup,
+	.check_fw_status =		mwifiex_check_fw_status,
+	.prog_fw =			mwifiex_prog_fw_w_helper,
+	.register_dev =			mwifiex_register_dev,
+	.unregister_dev =		mwifiex_unregister_dev,
+	.enable_int =			mwifiex_pcie_enable_host_int,
+	.process_int_status =		mwifiex_process_int_status,
+	.host_to_card =			mwifiex_pcie_host_to_card,
+	.wakeup =			mwifiex_pm_wakeup_card,
+	.wakeup_complete =		mwifiex_pm_wakeup_card_complete,
+
+	/* PCIE specific */
+	.cmdrsp_complete =		mwifiex_pcie_cmdrsp_complete,
+	.event_complete =		mwifiex_pcie_event_complete,
+	.update_mp_end_port =		NULL,
+	.cleanup_mpa_buf =		NULL,
+};
+
+/*
+ * This function initializes the PCIE driver module.
+ *
+ * This initiates the semaphore and registers the device with
+ * PCIE bus.
+ */
+static int mwifiex_pcie_init_module(void)
+{
+	int ret;
+
+	pr_debug("Marvell 8766 PCIe Driver\n");
+
+	sema_init(&add_remove_card_sem, 1);
+
+	/* Clear the flag in case user removes the card. */
+	user_rmmod = 0;
+
+	ret = pci_register_driver(&mwifiex_pcie);
+	if (ret)
+		pr_err("Driver register failed!\n");
+	else
+		pr_debug("info: Driver registered successfully!\n");
+
+	return ret;
+}
+
+/*
+ * This function cleans up the PCIE driver.
+ *
+ * The following major steps are followed for cleanup -
+ *      - Resume the device if its suspended
+ *      - Disconnect the device if connected
+ *      - Shutdown the firmware
+ *      - Unregister the device from PCIE bus.
+ */
+static void mwifiex_pcie_cleanup_module(void)
+{
+	if (!down_interruptible(&add_remove_card_sem))
+		up(&add_remove_card_sem);
+
+	/* Set the flag as user is removing this module. */
+	user_rmmod = 1;
+
+	pci_unregister_driver(&mwifiex_pcie);
+}
+
+module_init(mwifiex_pcie_init_module);
+module_exit(mwifiex_pcie_cleanup_module);
+
+MODULE_AUTHOR("Marvell International Ltd.");
+MODULE_DESCRIPTION("Marvell WiFi-Ex PCI-Express Driver version " PCIE_VERSION);
+MODULE_VERSION(PCIE_VERSION);
+MODULE_LICENSE("GPL v2");
+MODULE_FIRMWARE("mrvl/pcie8766_uapsta.bin");