mwl8k.c 85.0 KB
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/*
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 * drivers/net/wireless/mwl8k.c
 * Driver for Marvell TOPDOG 802.11 Wireless cards
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 *
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 * Copyright (C) 2008-2009 Marvell Semiconductor Inc.
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 *
 * This file is licensed under the terms of the GNU General Public
 * License version 2.  This program is licensed "as is" without any
 * warranty of any kind, whether express or implied.
 */

#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/spinlock.h>
#include <linux/list.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/completion.h>
#include <linux/etherdevice.h>
#include <net/mac80211.h>
#include <linux/moduleparam.h>
#include <linux/firmware.h>
#include <linux/workqueue.h>

#define MWL8K_DESC	"Marvell TOPDOG(R) 802.11 Wireless Network Driver"
#define MWL8K_NAME	KBUILD_MODNAME
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#define MWL8K_VERSION	"0.11"
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/* Register definitions */
#define MWL8K_HIU_GEN_PTR			0x00000c10
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#define  MWL8K_MODE_STA				 0x0000005a
#define  MWL8K_MODE_AP				 0x000000a5
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#define MWL8K_HIU_INT_CODE			0x00000c14
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#define  MWL8K_FWSTA_READY			 0xf0f1f2f4
#define  MWL8K_FWAP_READY			 0xf1f2f4a5
#define  MWL8K_INT_CODE_CMD_FINISHED		 0x00000005
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#define MWL8K_HIU_SCRATCH			0x00000c40

/* Host->device communications */
#define MWL8K_HIU_H2A_INTERRUPT_EVENTS		0x00000c18
#define MWL8K_HIU_H2A_INTERRUPT_STATUS		0x00000c1c
#define MWL8K_HIU_H2A_INTERRUPT_MASK		0x00000c20
#define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL	0x00000c24
#define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK	0x00000c28
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#define  MWL8K_H2A_INT_DUMMY			 (1 << 20)
#define  MWL8K_H2A_INT_RESET			 (1 << 15)
#define  MWL8K_H2A_INT_DOORBELL			 (1 << 1)
#define  MWL8K_H2A_INT_PPA_READY		 (1 << 0)
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/* Device->host communications */
#define MWL8K_HIU_A2H_INTERRUPT_EVENTS		0x00000c2c
#define MWL8K_HIU_A2H_INTERRUPT_STATUS		0x00000c30
#define MWL8K_HIU_A2H_INTERRUPT_MASK		0x00000c34
#define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL	0x00000c38
#define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK	0x00000c3c
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#define  MWL8K_A2H_INT_DUMMY			 (1 << 20)
#define  MWL8K_A2H_INT_CHNL_SWITCHED		 (1 << 11)
#define  MWL8K_A2H_INT_QUEUE_EMPTY		 (1 << 10)
#define  MWL8K_A2H_INT_RADAR_DETECT		 (1 << 7)
#define  MWL8K_A2H_INT_RADIO_ON			 (1 << 6)
#define  MWL8K_A2H_INT_RADIO_OFF		 (1 << 5)
#define  MWL8K_A2H_INT_MAC_EVENT		 (1 << 3)
#define  MWL8K_A2H_INT_OPC_DONE			 (1 << 2)
#define  MWL8K_A2H_INT_RX_READY			 (1 << 1)
#define  MWL8K_A2H_INT_TX_DONE			 (1 << 0)
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#define MWL8K_A2H_EVENTS	(MWL8K_A2H_INT_DUMMY | \
				 MWL8K_A2H_INT_CHNL_SWITCHED | \
				 MWL8K_A2H_INT_QUEUE_EMPTY | \
				 MWL8K_A2H_INT_RADAR_DETECT | \
				 MWL8K_A2H_INT_RADIO_ON | \
				 MWL8K_A2H_INT_RADIO_OFF | \
				 MWL8K_A2H_INT_MAC_EVENT | \
				 MWL8K_A2H_INT_OPC_DONE | \
				 MWL8K_A2H_INT_RX_READY | \
				 MWL8K_A2H_INT_TX_DONE)

#define MWL8K_RX_QUEUES		1
#define MWL8K_TX_QUEUES		4

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struct rxd_ops {
	int rxd_size;
	void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
	void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
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	int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
			   __le16 *qos);
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};

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struct mwl8k_device_info {
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	char *part_name;
	char *helper_image;
	char *fw_image;
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	struct rxd_ops *ap_rxd_ops;
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};

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struct mwl8k_rx_queue {
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	int rxd_count;
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	/* hw receives here */
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	int head;
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	/* refill descs here */
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	int tail;
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	void *rxd;
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	dma_addr_t rxd_dma;
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	struct {
		struct sk_buff *skb;
		DECLARE_PCI_UNMAP_ADDR(dma)
	} *buf;
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};

struct mwl8k_tx_queue {
	/* hw transmits here */
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	int head;
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	/* sw appends here */
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	int tail;
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	struct ieee80211_tx_queue_stats stats;
	struct mwl8k_tx_desc *txd;
	dma_addr_t txd_dma;
	struct sk_buff **skb;
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};

struct mwl8k_priv {
	struct ieee80211_hw *hw;
	struct pci_dev *pdev;

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	struct mwl8k_device_info *device_info;

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	void __iomem *sram;
	void __iomem *regs;

	/* firmware */
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	struct firmware *fw_helper;
	struct firmware *fw_ucode;
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	/* hardware/firmware parameters */
	bool ap_fw;
	struct rxd_ops *rxd_ops;

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	/* firmware access */
	struct mutex fw_mutex;
	struct task_struct *fw_mutex_owner;
	int fw_mutex_depth;
	struct completion *hostcmd_wait;

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	/* lock held over TX and TX reap */
	spinlock_t tx_lock;

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	/* TX quiesce completion, protected by fw_mutex and tx_lock */
	struct completion *tx_wait;

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	struct ieee80211_vif *vif;

	struct ieee80211_channel *current_channel;

	/* power management status cookie from firmware */
	u32 *cookie;
	dma_addr_t cookie_dma;

	u16 num_mcaddrs;
	u8 hw_rev;
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	u32 fw_rev;
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	/*
	 * Running count of TX packets in flight, to avoid
	 * iterating over the transmit rings each time.
	 */
	int pending_tx_pkts;

	struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
	struct mwl8k_tx_queue txq[MWL8K_TX_QUEUES];

	/* PHY parameters */
	struct ieee80211_supported_band band;
	struct ieee80211_channel channels[14];
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	struct ieee80211_rate rates[14];
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	bool radio_on;
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	bool radio_short_preamble;
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	bool sniffer_enabled;
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	bool wmm_enabled;
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	struct work_struct sta_notify_worker;
	spinlock_t sta_notify_list_lock;
	struct list_head sta_notify_list;

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	/* XXX need to convert this to handle multiple interfaces */
	bool capture_beacon;
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	u8 capture_bssid[ETH_ALEN];
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	struct sk_buff *beacon_skb;

	/*
	 * This FJ worker has to be global as it is scheduled from the
	 * RX handler.  At this point we don't know which interface it
	 * belongs to until the list of bssids waiting to complete join
	 * is checked.
	 */
	struct work_struct finalize_join_worker;

	/* Tasklet to reclaim TX descriptors and buffers after tx */
	struct tasklet_struct tx_reclaim_task;
};

/* Per interface specific private data */
struct mwl8k_vif {
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	/* Local MAC address.  */
	u8 mac_addr[ETH_ALEN];
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	/* Index into station database. Returned by UPDATE_STADB.  */
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	u8	peer_id;

	/* Non AMPDU sequence number assigned by driver */
	u16	seqno;
};

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#define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
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static const struct ieee80211_channel mwl8k_channels[] = {
	{ .center_freq = 2412, .hw_value = 1, },
	{ .center_freq = 2417, .hw_value = 2, },
	{ .center_freq = 2422, .hw_value = 3, },
	{ .center_freq = 2427, .hw_value = 4, },
	{ .center_freq = 2432, .hw_value = 5, },
	{ .center_freq = 2437, .hw_value = 6, },
	{ .center_freq = 2442, .hw_value = 7, },
	{ .center_freq = 2447, .hw_value = 8, },
	{ .center_freq = 2452, .hw_value = 9, },
	{ .center_freq = 2457, .hw_value = 10, },
	{ .center_freq = 2462, .hw_value = 11, },
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	{ .center_freq = 2467, .hw_value = 12, },
	{ .center_freq = 2472, .hw_value = 13, },
	{ .center_freq = 2484, .hw_value = 14, },
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};

static const struct ieee80211_rate mwl8k_rates[] = {
	{ .bitrate = 10, .hw_value = 2, },
	{ .bitrate = 20, .hw_value = 4, },
	{ .bitrate = 55, .hw_value = 11, },
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	{ .bitrate = 110, .hw_value = 22, },
	{ .bitrate = 220, .hw_value = 44, },
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	{ .bitrate = 60, .hw_value = 12, },
	{ .bitrate = 90, .hw_value = 18, },
	{ .bitrate = 120, .hw_value = 24, },
	{ .bitrate = 180, .hw_value = 36, },
	{ .bitrate = 240, .hw_value = 48, },
	{ .bitrate = 360, .hw_value = 72, },
	{ .bitrate = 480, .hw_value = 96, },
	{ .bitrate = 540, .hw_value = 108, },
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	{ .bitrate = 720, .hw_value = 144, },
};

static const u8 mwl8k_rateids[12] = {
	2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108,
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};

/* Set or get info from Firmware */
#define MWL8K_CMD_SET			0x0001
#define MWL8K_CMD_GET			0x0000

/* Firmware command codes */
#define MWL8K_CMD_CODE_DNLD		0x0001
#define MWL8K_CMD_GET_HW_SPEC		0x0003
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#define MWL8K_CMD_SET_HW_SPEC		0x0004
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#define MWL8K_CMD_MAC_MULTICAST_ADR	0x0010
#define MWL8K_CMD_GET_STAT		0x0014
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#define MWL8K_CMD_RADIO_CONTROL		0x001c
#define MWL8K_CMD_RF_TX_POWER		0x001e
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#define MWL8K_CMD_RF_ANTENNA		0x0020
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#define MWL8K_CMD_SET_PRE_SCAN		0x0107
#define MWL8K_CMD_SET_POST_SCAN		0x0108
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#define MWL8K_CMD_SET_RF_CHANNEL	0x010a
#define MWL8K_CMD_SET_AID		0x010d
#define MWL8K_CMD_SET_RATE		0x0110
#define MWL8K_CMD_SET_FINALIZE_JOIN	0x0111
#define MWL8K_CMD_RTS_THRESHOLD		0x0113
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#define MWL8K_CMD_SET_SLOT		0x0114
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#define MWL8K_CMD_SET_EDCA_PARAMS	0x0115
#define MWL8K_CMD_SET_WMM_MODE		0x0123
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#define MWL8K_CMD_MIMO_CONFIG		0x0125
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#define MWL8K_CMD_USE_FIXED_RATE	0x0126
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#define MWL8K_CMD_ENABLE_SNIFFER	0x0150
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#define MWL8K_CMD_SET_MAC_ADDR		0x0202
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#define MWL8K_CMD_SET_RATEADAPT_MODE	0x0203
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#define MWL8K_CMD_UPDATE_STADB		0x1123
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static const char *mwl8k_cmd_name(u16 cmd, char *buf, int bufsize)
{
#define MWL8K_CMDNAME(x)	case MWL8K_CMD_##x: do {\
					snprintf(buf, bufsize, "%s", #x);\
					return buf;\
					} while (0)
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	switch (cmd & ~0x8000) {
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		MWL8K_CMDNAME(CODE_DNLD);
		MWL8K_CMDNAME(GET_HW_SPEC);
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		MWL8K_CMDNAME(SET_HW_SPEC);
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		MWL8K_CMDNAME(MAC_MULTICAST_ADR);
		MWL8K_CMDNAME(GET_STAT);
		MWL8K_CMDNAME(RADIO_CONTROL);
		MWL8K_CMDNAME(RF_TX_POWER);
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		MWL8K_CMDNAME(RF_ANTENNA);
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		MWL8K_CMDNAME(SET_PRE_SCAN);
		MWL8K_CMDNAME(SET_POST_SCAN);
		MWL8K_CMDNAME(SET_RF_CHANNEL);
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		MWL8K_CMDNAME(SET_AID);
		MWL8K_CMDNAME(SET_RATE);
		MWL8K_CMDNAME(SET_FINALIZE_JOIN);
		MWL8K_CMDNAME(RTS_THRESHOLD);
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		MWL8K_CMDNAME(SET_SLOT);
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		MWL8K_CMDNAME(SET_EDCA_PARAMS);
		MWL8K_CMDNAME(SET_WMM_MODE);
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		MWL8K_CMDNAME(MIMO_CONFIG);
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		MWL8K_CMDNAME(USE_FIXED_RATE);
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		MWL8K_CMDNAME(ENABLE_SNIFFER);
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		MWL8K_CMDNAME(SET_MAC_ADDR);
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		MWL8K_CMDNAME(SET_RATEADAPT_MODE);
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		MWL8K_CMDNAME(UPDATE_STADB);
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	default:
		snprintf(buf, bufsize, "0x%x", cmd);
	}
#undef MWL8K_CMDNAME

	return buf;
}

/* Hardware and firmware reset */
static void mwl8k_hw_reset(struct mwl8k_priv *priv)
{
	iowrite32(MWL8K_H2A_INT_RESET,
		priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
	iowrite32(MWL8K_H2A_INT_RESET,
		priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
	msleep(20);
}

/* Release fw image */
static void mwl8k_release_fw(struct firmware **fw)
{
	if (*fw == NULL)
		return;
	release_firmware(*fw);
	*fw = NULL;
}

static void mwl8k_release_firmware(struct mwl8k_priv *priv)
{
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	mwl8k_release_fw(&priv->fw_ucode);
	mwl8k_release_fw(&priv->fw_helper);
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}

/* Request fw image */
static int mwl8k_request_fw(struct mwl8k_priv *priv,
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			    const char *fname, struct firmware **fw)
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{
	/* release current image */
	if (*fw != NULL)
		mwl8k_release_fw(fw);

	return request_firmware((const struct firmware **)fw,
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				fname, &priv->pdev->dev);
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}

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static int mwl8k_request_firmware(struct mwl8k_priv *priv)
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{
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	struct mwl8k_device_info *di = priv->device_info;
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	int rc;

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	if (di->helper_image != NULL) {
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		rc = mwl8k_request_fw(priv, di->helper_image, &priv->fw_helper);
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		if (rc) {
			printk(KERN_ERR "%s: Error requesting helper "
			       "firmware file %s\n", pci_name(priv->pdev),
			       di->helper_image);
			return rc;
		}
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	}

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	rc = mwl8k_request_fw(priv, di->fw_image, &priv->fw_ucode);
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	if (rc) {
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		printk(KERN_ERR "%s: Error requesting firmware file %s\n",
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		       pci_name(priv->pdev), di->fw_image);
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		mwl8k_release_fw(&priv->fw_helper);
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		return rc;
	}

	return 0;
}

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MODULE_FIRMWARE("mwl8k/helper_8687.fw");
MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");

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struct mwl8k_cmd_pkt {
	__le16	code;
	__le16	length;
	__le16	seq_num;
	__le16	result;
	char	payload[0];
} __attribute__((packed));

/*
 * Firmware loading.
 */
static int
mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
{
	void __iomem *regs = priv->regs;
	dma_addr_t dma_addr;
	int loops;

	dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
	if (pci_dma_mapping_error(priv->pdev, dma_addr))
		return -ENOMEM;

	iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
	iowrite32(0, regs + MWL8K_HIU_INT_CODE);
	iowrite32(MWL8K_H2A_INT_DOORBELL,
		regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
	iowrite32(MWL8K_H2A_INT_DUMMY,
		regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);

	loops = 1000;
	do {
		u32 int_code;

		int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
		if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
			iowrite32(0, regs + MWL8K_HIU_INT_CODE);
			break;
		}

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		cond_resched();
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		udelay(1);
	} while (--loops);

	pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);

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	return loops ? 0 : -ETIMEDOUT;
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}

static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
				const u8 *data, size_t length)
{
	struct mwl8k_cmd_pkt *cmd;
	int done;
	int rc = 0;

	cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
	if (cmd == NULL)
		return -ENOMEM;

	cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
	cmd->seq_num = 0;
	cmd->result = 0;

	done = 0;
	while (length) {
		int block_size = length > 256 ? 256 : length;

		memcpy(cmd->payload, data + done, block_size);
		cmd->length = cpu_to_le16(block_size);

		rc = mwl8k_send_fw_load_cmd(priv, cmd,
						sizeof(*cmd) + block_size);
		if (rc)
			break;

		done += block_size;
		length -= block_size;
	}

	if (!rc) {
		cmd->length = 0;
		rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
	}

	kfree(cmd);

	return rc;
}

static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
				const u8 *data, size_t length)
{
	unsigned char *buffer;
	int may_continue, rc = 0;
	u32 done, prev_block_size;

	buffer = kmalloc(1024, GFP_KERNEL);
	if (buffer == NULL)
		return -ENOMEM;

	done = 0;
	prev_block_size = 0;
	may_continue = 1000;
	while (may_continue > 0) {
		u32 block_size;

		block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
		if (block_size & 1) {
			block_size &= ~1;
			may_continue--;
		} else {
			done += prev_block_size;
			length -= prev_block_size;
		}

		if (block_size > 1024 || block_size > length) {
			rc = -EOVERFLOW;
			break;
		}

		if (length == 0) {
			rc = 0;
			break;
		}

		if (block_size == 0) {
			rc = -EPROTO;
			may_continue--;
			udelay(1);
			continue;
		}

		prev_block_size = block_size;
		memcpy(buffer, data + done, block_size);

		rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
		if (rc)
			break;
	}

	if (!rc && length != 0)
		rc = -EREMOTEIO;

	kfree(buffer);

	return rc;
}

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static int mwl8k_load_firmware(struct ieee80211_hw *hw)
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{
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	struct mwl8k_priv *priv = hw->priv;
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	struct firmware *fw = priv->fw_ucode;
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	int rc;
	int loops;

	if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
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		struct firmware *helper = priv->fw_helper;
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		if (helper == NULL) {
			printk(KERN_ERR "%s: helper image needed but none "
			       "given\n", pci_name(priv->pdev));
			return -EINVAL;
		}
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		rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
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		if (rc) {
			printk(KERN_ERR "%s: unable to load firmware "
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			       "helper image\n", pci_name(priv->pdev));
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			return rc;
		}
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		msleep(5);
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		rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
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	} else {
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		rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
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	}

	if (rc) {
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		printk(KERN_ERR "%s: unable to load firmware image\n",
		       pci_name(priv->pdev));
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		return rc;
	}

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	iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
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	loops = 500000;
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	do {
583 584 585 586 587 588 589 590
		u32 ready_code;

		ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
		if (ready_code == MWL8K_FWAP_READY) {
			priv->ap_fw = 1;
			break;
		} else if (ready_code == MWL8K_FWSTA_READY) {
			priv->ap_fw = 0;
591
			break;
592 593 594
		}

		cond_resched();
595 596 597 598 599 600 601 602 603 604 605
		udelay(1);
	} while (--loops);

	return loops ? 0 : -ETIMEDOUT;
}


/* DMA header used by firmware and hardware.  */
struct mwl8k_dma_data {
	__le16 fwlen;
	struct ieee80211_hdr wh;
606
	char data[0];
607 608 609
} __attribute__((packed));

/* Routines to add/remove DMA header from skb.  */
610
static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
611
{
612 613 614 615 616 617 618 619 620 621 622 623 624
	struct mwl8k_dma_data *tr;
	int hdrlen;

	tr = (struct mwl8k_dma_data *)skb->data;
	hdrlen = ieee80211_hdrlen(tr->wh.frame_control);

	if (hdrlen != sizeof(tr->wh)) {
		if (ieee80211_is_data_qos(tr->wh.frame_control)) {
			memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
			*((__le16 *)(tr->data - 2)) = qos;
		} else {
			memmove(tr->data - hdrlen, &tr->wh, hdrlen);
		}
625
	}
626 627 628

	if (hdrlen != sizeof(*tr))
		skb_pull(skb, sizeof(*tr) - hdrlen);
629 630
}

631
static inline void mwl8k_add_dma_header(struct sk_buff *skb)
632 633
{
	struct ieee80211_hdr *wh;
634
	int hdrlen;
635 636
	struct mwl8k_dma_data *tr;

637 638 639 640 641 642
	/*
	 * Add a firmware DMA header; the firmware requires that we
	 * present a 2-byte payload length followed by a 4-address
	 * header (without QoS field), followed (optionally) by any
	 * WEP/ExtIV header (but only filled in for CCMP).
	 */
643
	wh = (struct ieee80211_hdr *)skb->data;
644

645
	hdrlen = ieee80211_hdrlen(wh->frame_control);
646 647
	if (hdrlen != sizeof(*tr))
		skb_push(skb, sizeof(*tr) - hdrlen);
648

649 650
	if (ieee80211_is_data_qos(wh->frame_control))
		hdrlen -= 2;
651 652 653 654

	tr = (struct mwl8k_dma_data *)skb->data;
	if (wh != &tr->wh)
		memmove(&tr->wh, wh, hdrlen);
655 656
	if (hdrlen != sizeof(tr->wh))
		memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
657 658 659 660 661 662

	/*
	 * Firmware length is the length of the fully formed "802.11
	 * payload".  That is, everything except for the 802.11 header.
	 * This includes all crypto material including the MIC.
	 */
663
	tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr));
664 665 666 667
}


/*
668
 * Packet reception for 88w8366 AP firmware.
669
 */
670
struct mwl8k_rxd_8366_ap {
671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687
	__le16 pkt_len;
	__u8 sq2;
	__u8 rate;
	__le32 pkt_phys_addr;
	__le32 next_rxd_phys_addr;
	__le16 qos_control;
	__le16 htsig2;
	__le32 hw_rssi_info;
	__le32 hw_noise_floor_info;
	__u8 noise_floor;
	__u8 pad0[3];
	__u8 rssi;
	__u8 rx_status;
	__u8 channel;
	__u8 rx_ctrl;
} __attribute__((packed));

688 689 690
#define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT	0x80
#define MWL8K_8366_AP_RATE_INFO_40MHZ		0x40
#define MWL8K_8366_AP_RATE_INFO_RATEID(x)	((x) & 0x3f)
691

692
#define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST	0x80
693

694
static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
695
{
696
	struct mwl8k_rxd_8366_ap *rxd = _rxd;
697 698

	rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
699
	rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
700 701
}

702
static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
703
{
704
	struct mwl8k_rxd_8366_ap *rxd = _rxd;
705 706 707 708 709 710 711 712

	rxd->pkt_len = cpu_to_le16(len);
	rxd->pkt_phys_addr = cpu_to_le32(addr);
	wmb();
	rxd->rx_ctrl = 0;
}

static int
713 714
mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
			  __le16 *qos)
715
{
716
	struct mwl8k_rxd_8366_ap *rxd = _rxd;
717

718
	if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
719 720 721 722 723 724 725 726
		return -1;
	rmb();

	memset(status, 0, sizeof(*status));

	status->signal = -rxd->rssi;
	status->noise = -rxd->noise_floor;

727
	if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
728
		status->flag |= RX_FLAG_HT;
729
		if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
730
			status->flag |= RX_FLAG_40MHZ;
731
		status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
732 733 734 735 736 737 738 739 740 741 742 743 744 745
	} else {
		int i;

		for (i = 0; i < ARRAY_SIZE(mwl8k_rates); i++) {
			if (mwl8k_rates[i].hw_value == rxd->rate) {
				status->rate_idx = i;
				break;
			}
		}
	}

	status->band = IEEE80211_BAND_2GHZ;
	status->freq = ieee80211_channel_to_frequency(rxd->channel);

746 747
	*qos = rxd->qos_control;

748 749 750
	return le16_to_cpu(rxd->pkt_len);
}

751 752 753 754 755
static struct rxd_ops rxd_8366_ap_ops = {
	.rxd_size	= sizeof(struct mwl8k_rxd_8366_ap),
	.rxd_init	= mwl8k_rxd_8366_ap_init,
	.rxd_refill	= mwl8k_rxd_8366_ap_refill,
	.rxd_process	= mwl8k_rxd_8366_ap_process,
756 757 758
};

/*
759
 * Packet reception for STA firmware.
760
 */
761
struct mwl8k_rxd_sta {
762 763 764 765
	__le16 pkt_len;
	__u8 link_quality;
	__u8 noise_level;
	__le32 pkt_phys_addr;
766
	__le32 next_rxd_phys_addr;
767 768 769 770 771 772 773 774 775 776 777
	__le16 qos_control;
	__le16 rate_info;
	__le32 pad0[4];
	__u8 rssi;
	__u8 channel;
	__le16 pad1;
	__u8 rx_ctrl;
	__u8 rx_status;
	__u8 pad2[2];
} __attribute__((packed));

778 779 780 781 782 783
#define MWL8K_STA_RATE_INFO_SHORTPRE		0x8000
#define MWL8K_STA_RATE_INFO_ANTSELECT(x)	(((x) >> 11) & 0x3)
#define MWL8K_STA_RATE_INFO_RATEID(x)		(((x) >> 3) & 0x3f)
#define MWL8K_STA_RATE_INFO_40MHZ		0x0004
#define MWL8K_STA_RATE_INFO_SHORTGI		0x0002
#define MWL8K_STA_RATE_INFO_MCS_FORMAT		0x0001
784

785
#define MWL8K_STA_RX_CTRL_OWNED_BY_HOST		0x02
786

787
static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
788
{
789
	struct mwl8k_rxd_sta *rxd = _rxd;
790 791

	rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
792
	rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
793 794
}

795
static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
796
{
797
	struct mwl8k_rxd_sta *rxd = _rxd;
798 799 800 801 802 803 804 805

	rxd->pkt_len = cpu_to_le16(len);
	rxd->pkt_phys_addr = cpu_to_le32(addr);
	wmb();
	rxd->rx_ctrl = 0;
}

static int
806
mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
807
		       __le16 *qos)
808
{
809
	struct mwl8k_rxd_sta *rxd = _rxd;
810 811
	u16 rate_info;

812
	if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
813 814 815 816 817 818 819 820 821
		return -1;
	rmb();

	rate_info = le16_to_cpu(rxd->rate_info);

	memset(status, 0, sizeof(*status));

	status->signal = -rxd->rssi;
	status->noise = -rxd->noise_level;
822 823
	status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
	status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
824

825
	if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
826
		status->flag |= RX_FLAG_SHORTPRE;
827
	if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
828
		status->flag |= RX_FLAG_40MHZ;
829
	if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
830
		status->flag |= RX_FLAG_SHORT_GI;
831
	if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
832 833 834 835 836
		status->flag |= RX_FLAG_HT;

	status->band = IEEE80211_BAND_2GHZ;
	status->freq = ieee80211_channel_to_frequency(rxd->channel);

837 838
	*qos = rxd->qos_control;

839 840 841
	return le16_to_cpu(rxd->pkt_len);
}

842 843 844 845 846
static struct rxd_ops rxd_sta_ops = {
	.rxd_size	= sizeof(struct mwl8k_rxd_sta),
	.rxd_init	= mwl8k_rxd_sta_init,
	.rxd_refill	= mwl8k_rxd_sta_refill,
	.rxd_process	= mwl8k_rxd_sta_process,
847 848 849
};


850 851 852 853 854 855 856 857 858 859
#define MWL8K_RX_DESCS		256
#define MWL8K_RX_MAXSZ		3800

static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
{
	struct mwl8k_priv *priv = hw->priv;
	struct mwl8k_rx_queue *rxq = priv->rxq + index;
	int size;
	int i;

860 861 862
	rxq->rxd_count = 0;
	rxq->head = 0;
	rxq->tail = 0;
863

864
	size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
865

866 867
	rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
	if (rxq->rxd == NULL) {
868
		printk(KERN_ERR "%s: failed to alloc RX descriptors\n",
L
Lennert Buytenhek 已提交
869
		       wiphy_name(hw->wiphy));
870 871
		return -ENOMEM;
	}
872
	memset(rxq->rxd, 0, size);
873

874 875
	rxq->buf = kmalloc(MWL8K_RX_DESCS * sizeof(*rxq->buf), GFP_KERNEL);
	if (rxq->buf == NULL) {
876
		printk(KERN_ERR "%s: failed to alloc RX skbuff list\n",
L
Lennert Buytenhek 已提交
877
		       wiphy_name(hw->wiphy));
878
		pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
879 880
		return -ENOMEM;
	}
881
	memset(rxq->buf, 0, MWL8K_RX_DESCS * sizeof(*rxq->buf));
882 883

	for (i = 0; i < MWL8K_RX_DESCS; i++) {
884 885
		int desc_size;
		void *rxd;
886
		int nexti;
887 888 889 890
		dma_addr_t next_dma_addr;

		desc_size = priv->rxd_ops->rxd_size;
		rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
891

892 893 894 895
		nexti = i + 1;
		if (nexti == MWL8K_RX_DESCS)
			nexti = 0;
		next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
896

897
		priv->rxd_ops->rxd_init(rxd, next_dma_addr);
898 899 900 901 902 903 904 905 906 907 908 909
	}

	return 0;
}

static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
{
	struct mwl8k_priv *priv = hw->priv;
	struct mwl8k_rx_queue *rxq = priv->rxq + index;
	int refilled;

	refilled = 0;
910
	while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
911
		struct sk_buff *skb;
912
		dma_addr_t addr;
913
		int rx;
914
		void *rxd;
915 916 917 918 919

		skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
		if (skb == NULL)
			break;

920 921
		addr = pci_map_single(priv->pdev, skb->data,
				      MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
922

923 924 925 926
		rxq->rxd_count++;
		rx = rxq->tail++;
		if (rxq->tail == MWL8K_RX_DESCS)
			rxq->tail = 0;
927 928
		rxq->buf[rx].skb = skb;
		pci_unmap_addr_set(&rxq->buf[rx], dma, addr);
929 930 931

		rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
		priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
932 933 934 935 936 937 938 939 940 941 942 943 944 945 946

		refilled++;
	}

	return refilled;
}

/* Must be called only when the card's reception is completely halted */
static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
{
	struct mwl8k_priv *priv = hw->priv;
	struct mwl8k_rx_queue *rxq = priv->rxq + index;
	int i;

	for (i = 0; i < MWL8K_RX_DESCS; i++) {
947 948 949 950 951 952 953 954
		if (rxq->buf[i].skb != NULL) {
			pci_unmap_single(priv->pdev,
					 pci_unmap_addr(&rxq->buf[i], dma),
					 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
			pci_unmap_addr_set(&rxq->buf[i], dma, 0);

			kfree_skb(rxq->buf[i].skb);
			rxq->buf[i].skb = NULL;
955 956 957
		}
	}

958 959
	kfree(rxq->buf);
	rxq->buf = NULL;
960 961

	pci_free_consistent(priv->pdev,
962
			    MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
963 964
			    rxq->rxd, rxq->rxd_dma);
	rxq->rxd = NULL;
965 966 967 968 969 970 971 972 973 974 975 976 977 978 979
}


/*
 * Scan a list of BSSIDs to process for finalize join.
 * Allows for extension to process multiple BSSIDs.
 */
static inline int
mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
{
	return priv->capture_beacon &&
		ieee80211_is_beacon(wh->frame_control) &&
		!compare_ether_addr(wh->addr3, priv->capture_bssid);
}

980 981
static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
				     struct sk_buff *skb)
982
{
983 984
	struct mwl8k_priv *priv = hw->priv;

985
	priv->capture_beacon = false;
986
	memset(priv->capture_bssid, 0, ETH_ALEN);
987 988 989 990 991 992 993 994

	/*
	 * Use GFP_ATOMIC as rxq_process is called from
	 * the primary interrupt handler, memory allocation call
	 * must not sleep.
	 */
	priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
	if (priv->beacon_skb != NULL)
995
		ieee80211_queue_work(hw, &priv->finalize_join_worker);
996 997 998 999 1000 1001 1002 1003 1004
}

static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
{
	struct mwl8k_priv *priv = hw->priv;
	struct mwl8k_rx_queue *rxq = priv->rxq + index;
	int processed;

	processed = 0;
1005
	while (rxq->rxd_count && limit--) {
1006
		struct sk_buff *skb;
1007 1008
		void *rxd;
		int pkt_len;
1009
		struct ieee80211_rx_status status;
1010
		__le16 qos;
1011

1012
		skb = rxq->buf[rxq->head].skb;
1013 1014
		if (skb == NULL)
			break;
1015 1016 1017

		rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);

1018
		pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos);
1019 1020 1021
		if (pkt_len < 0)
			break;

1022 1023 1024 1025 1026 1027
		rxq->buf[rxq->head].skb = NULL;

		pci_unmap_single(priv->pdev,
				 pci_unmap_addr(&rxq->buf[rxq->head], dma),
				 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
		pci_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1028

1029 1030 1031 1032
		rxq->head++;
		if (rxq->head == MWL8K_RX_DESCS)
			rxq->head = 0;

1033
		rxq->rxd_count--;
1034

1035
		skb_put(skb, pkt_len);
1036
		mwl8k_remove_dma_header(skb, qos);
1037 1038

		/*
L
Lennert Buytenhek 已提交
1039 1040 1041
		 * Check for a pending join operation.  Save a
		 * copy of the beacon and schedule a tasklet to
		 * send a FINALIZE_JOIN command to the firmware.
1042
		 */
1043
		if (mwl8k_capture_bssid(priv, (void *)skb->data))
1044
			mwl8k_save_beacon(hw, skb);
1045

1046 1047
		memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
		ieee80211_rx_irqsafe(hw, skb);
1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065

		processed++;
	}

	return processed;
}


/*
 * Packet transmission.
 */

#define MWL8K_TXD_STATUS_OK			0x00000001
#define MWL8K_TXD_STATUS_OK_RETRY		0x00000002
#define MWL8K_TXD_STATUS_OK_MORE_RETRY		0x00000004
#define MWL8K_TXD_STATUS_MULTICAST_TX		0x00000008
#define MWL8K_TXD_STATUS_FW_OWNED		0x80000000

1066 1067 1068 1069 1070 1071
#define MWL8K_QOS_QLEN_UNSPEC			0xff00
#define MWL8K_QOS_ACK_POLICY_MASK		0x0060
#define MWL8K_QOS_ACK_POLICY_NORMAL		0x0000
#define MWL8K_QOS_ACK_POLICY_BLOCKACK		0x0060
#define MWL8K_QOS_EOSP				0x0010

1072 1073 1074 1075 1076 1077 1078
struct mwl8k_tx_desc {
	__le32 status;
	__u8 data_rate;
	__u8 tx_priority;
	__le16 qos_control;
	__le32 pkt_phys_addr;
	__le16 pkt_len;
1079
	__u8 dest_MAC_addr[ETH_ALEN];
1080
	__le32 next_txd_phys_addr;
1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095
	__le32 reserved;
	__le16 rate_info;
	__u8 peer_id;
	__u8 tx_frag_cnt;
} __attribute__((packed));

#define MWL8K_TX_DESCS		128

static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
{
	struct mwl8k_priv *priv = hw->priv;
	struct mwl8k_tx_queue *txq = priv->txq + index;
	int size;
	int i;

1096 1097 1098 1099
	memset(&txq->stats, 0, sizeof(struct ieee80211_tx_queue_stats));
	txq->stats.limit = MWL8K_TX_DESCS;
	txq->head = 0;
	txq->tail = 0;
1100 1101 1102

	size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);

1103 1104
	txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
	if (txq->txd == NULL) {
1105
		printk(KERN_ERR "%s: failed to alloc TX descriptors\n",
L
Lennert Buytenhek 已提交
1106
		       wiphy_name(hw->wiphy));
1107 1108
		return -ENOMEM;
	}
1109
	memset(txq->txd, 0, size);
1110

1111 1112
	txq->skb = kmalloc(MWL8K_TX_DESCS * sizeof(*txq->skb), GFP_KERNEL);
	if (txq->skb == NULL) {
1113
		printk(KERN_ERR "%s: failed to alloc TX skbuff list\n",
L
Lennert Buytenhek 已提交
1114
		       wiphy_name(hw->wiphy));
1115
		pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1116 1117
		return -ENOMEM;
	}
1118
	memset(txq->skb, 0, MWL8K_TX_DESCS * sizeof(*txq->skb));
1119 1120 1121 1122 1123

	for (i = 0; i < MWL8K_TX_DESCS; i++) {
		struct mwl8k_tx_desc *tx_desc;
		int nexti;

1124
		tx_desc = txq->txd + i;
1125 1126 1127
		nexti = (i + 1) % MWL8K_TX_DESCS;

		tx_desc->status = 0;
1128 1129
		tx_desc->next_txd_phys_addr =
			cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143
	}

	return 0;
}

static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
{
	iowrite32(MWL8K_H2A_INT_PPA_READY,
		priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
	iowrite32(MWL8K_H2A_INT_DUMMY,
		priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
	ioread32(priv->regs + MWL8K_HIU_INT_CODE);
}

1144
static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1145
{
1146 1147 1148 1149 1150 1151 1152 1153 1154 1155
	struct mwl8k_priv *priv = hw->priv;
	int i;

	for (i = 0; i < MWL8K_TX_QUEUES; i++) {
		struct mwl8k_tx_queue *txq = priv->txq + i;
		int fw_owned = 0;
		int drv_owned = 0;
		int unused = 0;
		int desc;

1156
		for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1157 1158
			struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
			u32 status;
1159

1160
			status = le32_to_cpu(tx_desc->status);
1161
			if (status & MWL8K_TXD_STATUS_FW_OWNED)
1162
				fw_owned++;
1163
			else
1164
				drv_owned++;
1165 1166

			if (tx_desc->pkt_len == 0)
1167
				unused++;
1168 1169
		}

1170 1171 1172 1173 1174 1175
		printk(KERN_ERR "%s: txq[%d] len=%d head=%d tail=%d "
		       "fw_owned=%d drv_owned=%d unused=%d\n",
		       wiphy_name(hw->wiphy), i,
		       txq->stats.len, txq->head, txq->tail,
		       fw_owned, drv_owned, unused);
	}
1176 1177
}

1178
/*
1179
 * Must be called with priv->fw_mutex held and tx queues stopped.
1180
 */
1181 1182
#define MWL8K_TX_WAIT_TIMEOUT_MS	1000

1183
static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1184 1185
{
	struct mwl8k_priv *priv = hw->priv;
1186
	DECLARE_COMPLETION_ONSTACK(tx_wait);
1187 1188
	int retry;
	int rc;
1189 1190 1191

	might_sleep();

1192 1193 1194 1195 1196 1197 1198 1199 1200 1201
	/*
	 * The TX queues are stopped at this point, so this test
	 * doesn't need to take ->tx_lock.
	 */
	if (!priv->pending_tx_pkts)
		return 0;

	retry = 0;
	rc = 0;

1202
	spin_lock_bh(&priv->tx_lock);
1203 1204 1205 1206
	priv->tx_wait = &tx_wait;
	while (!rc) {
		int oldcount;
		unsigned long timeout;
1207

1208
		oldcount = priv->pending_tx_pkts;
1209

1210
		spin_unlock_bh(&priv->tx_lock);
1211
		timeout = wait_for_completion_timeout(&tx_wait,
1212
			    msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1213
		spin_lock_bh(&priv->tx_lock);
1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224

		if (timeout) {
			WARN_ON(priv->pending_tx_pkts);
			if (retry) {
				printk(KERN_NOTICE "%s: tx rings drained\n",
				       wiphy_name(hw->wiphy));
			}
			break;
		}

		if (priv->pending_tx_pkts < oldcount) {
1225 1226
			printk(KERN_NOTICE "%s: waiting for tx rings "
			       "to drain (%d -> %d pkts)\n",
1227 1228 1229 1230 1231 1232
			       wiphy_name(hw->wiphy), oldcount,
			       priv->pending_tx_pkts);
			retry = 1;
			continue;
		}

1233 1234
		priv->tx_wait = NULL;

1235 1236 1237 1238 1239
		printk(KERN_ERR "%s: tx rings stuck for %d ms\n",
		       wiphy_name(hw->wiphy), MWL8K_TX_WAIT_TIMEOUT_MS);
		mwl8k_dump_tx_rings(hw);

		rc = -ETIMEDOUT;
1240
	}
1241
	spin_unlock_bh(&priv->tx_lock);
1242

1243
	return rc;
1244 1245
}

1246 1247 1248 1249
#define MWL8K_TXD_SUCCESS(status)				\
	((status) & (MWL8K_TXD_STATUS_OK |			\
		     MWL8K_TXD_STATUS_OK_RETRY |		\
		     MWL8K_TXD_STATUS_OK_MORE_RETRY))
1250 1251 1252 1253 1254 1255 1256

static void mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int force)
{
	struct mwl8k_priv *priv = hw->priv;
	struct mwl8k_tx_queue *txq = priv->txq + index;
	int wake = 0;

1257
	while (txq->stats.len > 0) {
1258 1259 1260
		int tx;
		struct mwl8k_tx_desc *tx_desc;
		unsigned long addr;
1261
		int size;
1262 1263 1264 1265
		struct sk_buff *skb;
		struct ieee80211_tx_info *info;
		u32 status;

1266 1267
		tx = txq->head;
		tx_desc = txq->txd + tx;
1268 1269 1270 1271 1272 1273 1274 1275 1276 1277

		status = le32_to_cpu(tx_desc->status);

		if (status & MWL8K_TXD_STATUS_FW_OWNED) {
			if (!force)
				break;
			tx_desc->status &=
				~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
		}

1278 1279 1280
		txq->head = (tx + 1) % MWL8K_TX_DESCS;
		BUG_ON(txq->stats.len == 0);
		txq->stats.len--;
1281 1282 1283
		priv->pending_tx_pkts--;

		addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1284
		size = le16_to_cpu(tx_desc->pkt_len);
1285 1286
		skb = txq->skb[tx];
		txq->skb[tx] = NULL;
1287 1288 1289 1290

		BUG_ON(skb == NULL);
		pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);

1291
		mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1292 1293 1294 1295 1296 1297 1298

		/* Mark descriptor as unused */
		tx_desc->pkt_phys_addr = 0;
		tx_desc->pkt_len = 0;

		info = IEEE80211_SKB_CB(skb);
		ieee80211_tx_info_clear_status(info);
1299
		if (MWL8K_TXD_SUCCESS(status))
1300 1301 1302 1303
			info->flags |= IEEE80211_TX_STAT_ACK;

		ieee80211_tx_status_irqsafe(hw, skb);

1304
		wake = 1;
1305 1306
	}

1307
	if (wake && priv->radio_on && !mutex_is_locked(&priv->fw_mutex))
1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318
		ieee80211_wake_queue(hw, index);
}

/* must be called only when the card's transmit is completely halted */
static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
{
	struct mwl8k_priv *priv = hw->priv;
	struct mwl8k_tx_queue *txq = priv->txq + index;

	mwl8k_txq_reclaim(hw, index, 1);

1319 1320
	kfree(txq->skb);
	txq->skb = NULL;
1321 1322 1323

	pci_free_consistent(priv->pdev,
			    MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1324 1325
			    txq->txd, txq->txd_dma);
	txq->txd = NULL;
1326 1327 1328 1329 1330 1331 1332
}

static int
mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
{
	struct mwl8k_priv *priv = hw->priv;
	struct ieee80211_tx_info *tx_info;
1333
	struct mwl8k_vif *mwl8k_vif;
1334 1335 1336 1337
	struct ieee80211_hdr *wh;
	struct mwl8k_tx_queue *txq;
	struct mwl8k_tx_desc *tx;
	dma_addr_t dma;
1338 1339 1340
	u32 txstatus;
	u8 txdatarate;
	u16 qos;
1341

1342 1343 1344 1345 1346
	wh = (struct ieee80211_hdr *)skb->data;
	if (ieee80211_is_data_qos(wh->frame_control))
		qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
	else
		qos = 0;
1347

1348
	mwl8k_add_dma_header(skb);
1349
	wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1350 1351 1352 1353 1354 1355

	tx_info = IEEE80211_SKB_CB(skb);
	mwl8k_vif = MWL8K_VIF(tx_info->control.vif);

	if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
		u16 seqno = mwl8k_vif->seqno;
1356

1357 1358 1359 1360 1361
		wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
		wh->seq_ctrl |= cpu_to_le16(seqno << 4);
		mwl8k_vif->seqno = seqno++ % 4096;
	}

1362 1363 1364 1365 1366 1367
	/* Setup firmware control bit fields for each frame type.  */
	txstatus = 0;
	txdatarate = 0;
	if (ieee80211_is_mgmt(wh->frame_control) ||
	    ieee80211_is_ctl(wh->frame_control)) {
		txdatarate = 0;
1368
		qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1369 1370 1371 1372 1373
	} else if (ieee80211_is_data(wh->frame_control)) {
		txdatarate = 1;
		if (is_multicast_ether_addr(wh->addr1))
			txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;

1374
		qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1375
		if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1376
			qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1377
		else
1378
			qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1379
	}
1380 1381 1382 1383 1384 1385

	dma = pci_map_single(priv->pdev, skb->data,
				skb->len, PCI_DMA_TODEVICE);

	if (pci_dma_mapping_error(priv->pdev, dma)) {
		printk(KERN_DEBUG "%s: failed to dma map skb, "
L
Lennert Buytenhek 已提交
1386
		       "dropping TX frame.\n", wiphy_name(hw->wiphy));
1387
		dev_kfree_skb(skb);
1388 1389 1390
		return NETDEV_TX_OK;
	}

1391
	spin_lock_bh(&priv->tx_lock);
1392

1393
	txq = priv->txq + index;
1394

1395 1396
	BUG_ON(txq->skb[txq->tail] != NULL);
	txq->skb[txq->tail] = skb;
1397

1398
	tx = txq->txd + txq->tail;
1399 1400
	tx->data_rate = txdatarate;
	tx->tx_priority = index;
1401 1402 1403
	tx->qos_control = cpu_to_le16(qos);
	tx->pkt_phys_addr = cpu_to_le32(dma);
	tx->pkt_len = cpu_to_le16(skb->len);
1404 1405
	tx->rate_info = 0;
	tx->peer_id = mwl8k_vif->peer_id;
1406
	wmb();
1407 1408
	tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);

1409 1410
	txq->stats.count++;
	txq->stats.len++;
1411 1412
	priv->pending_tx_pkts++;

1413 1414 1415
	txq->tail++;
	if (txq->tail == MWL8K_TX_DESCS)
		txq->tail = 0;
1416

1417
	if (txq->head == txq->tail)
1418 1419
		ieee80211_stop_queue(hw, index);

1420
	mwl8k_tx_start(priv);
1421 1422 1423 1424 1425 1426 1427

	spin_unlock_bh(&priv->tx_lock);

	return NETDEV_TX_OK;
}


1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481
/*
 * Firmware access.
 *
 * We have the following requirements for issuing firmware commands:
 * - Some commands require that the packet transmit path is idle when
 *   the command is issued.  (For simplicity, we'll just quiesce the
 *   transmit path for every command.)
 * - There are certain sequences of commands that need to be issued to
 *   the hardware sequentially, with no other intervening commands.
 *
 * This leads to an implementation of a "firmware lock" as a mutex that
 * can be taken recursively, and which is taken by both the low-level
 * command submission function (mwl8k_post_cmd) as well as any users of
 * that function that require issuing of an atomic sequence of commands,
 * and quiesces the transmit path whenever it's taken.
 */
static int mwl8k_fw_lock(struct ieee80211_hw *hw)
{
	struct mwl8k_priv *priv = hw->priv;

	if (priv->fw_mutex_owner != current) {
		int rc;

		mutex_lock(&priv->fw_mutex);
		ieee80211_stop_queues(hw);

		rc = mwl8k_tx_wait_empty(hw);
		if (rc) {
			ieee80211_wake_queues(hw);
			mutex_unlock(&priv->fw_mutex);

			return rc;
		}

		priv->fw_mutex_owner = current;
	}

	priv->fw_mutex_depth++;

	return 0;
}

static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
{
	struct mwl8k_priv *priv = hw->priv;

	if (!--priv->fw_mutex_depth) {
		ieee80211_wake_queues(hw);
		priv->fw_mutex_owner = NULL;
		mutex_unlock(&priv->fw_mutex);
	}
}


1482 1483 1484 1485
/*
 * Command processing.
 */

1486 1487
/* Timeout firmware commands after 10s */
#define MWL8K_CMD_TIMEOUT_MS	10000
1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499

static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
{
	DECLARE_COMPLETION_ONSTACK(cmd_wait);
	struct mwl8k_priv *priv = hw->priv;
	void __iomem *regs = priv->regs;
	dma_addr_t dma_addr;
	unsigned int dma_size;
	int rc;
	unsigned long timeout = 0;
	u8 buf[32];

L
Lennert Buytenhek 已提交
1500
	cmd->result = 0xffff;
1501 1502 1503 1504 1505 1506
	dma_size = le16_to_cpu(cmd->length);
	dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
				  PCI_DMA_BIDIRECTIONAL);
	if (pci_dma_mapping_error(priv->pdev, dma_addr))
		return -ENOMEM;

1507
	rc = mwl8k_fw_lock(hw);
1508 1509 1510
	if (rc) {
		pci_unmap_single(priv->pdev, dma_addr, dma_size,
						PCI_DMA_BIDIRECTIONAL);
1511
		return rc;
1512
	}
1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523

	priv->hostcmd_wait = &cmd_wait;
	iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
	iowrite32(MWL8K_H2A_INT_DOORBELL,
		regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
	iowrite32(MWL8K_H2A_INT_DUMMY,
		regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);

	timeout = wait_for_completion_timeout(&cmd_wait,
				msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));

1524 1525 1526 1527
	priv->hostcmd_wait = NULL;

	mwl8k_fw_unlock(hw);

1528 1529 1530
	pci_unmap_single(priv->pdev, dma_addr, dma_size,
					PCI_DMA_BIDIRECTIONAL);

1531 1532
	if (!timeout) {
		printk(KERN_ERR "%s: Command %s timeout after %u ms\n",
L
Lennert Buytenhek 已提交
1533
		       wiphy_name(hw->wiphy),
1534 1535 1536 1537
		       mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
		       MWL8K_CMD_TIMEOUT_MS);
		rc = -ETIMEDOUT;
	} else {
1538 1539 1540 1541
		int ms;

		ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);

1542
		rc = cmd->result ? -EINVAL : 0;
1543 1544
		if (rc)
			printk(KERN_ERR "%s: Command %s error 0x%x\n",
L
Lennert Buytenhek 已提交
1545
			       wiphy_name(hw->wiphy),
1546
			       mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1547
			       le16_to_cpu(cmd->result));
1548 1549 1550 1551 1552
		else if (ms > 2000)
			printk(KERN_NOTICE "%s: Command %s took %d ms\n",
			       wiphy_name(hw->wiphy),
			       mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
			       ms);
1553 1554 1555 1556 1557 1558
	}

	return rc;
}

/*
1559
 * CMD_GET_HW_SPEC (STA version).
1560
 */
1561
struct mwl8k_cmd_get_hw_spec_sta {
1562 1563 1564 1565
	struct mwl8k_cmd_pkt header;
	__u8 hw_rev;
	__u8 host_interface;
	__le16 num_mcaddrs;
1566
	__u8 perm_addr[ETH_ALEN];
1567 1568 1569 1570 1571 1572 1573 1574 1575 1576
	__le16 region_code;
	__le32 fw_rev;
	__le32 ps_cookie;
	__le32 caps;
	__u8 mcs_bitmap[16];
	__le32 rx_queue_ptr;
	__le32 num_tx_queues;
	__le32 tx_queue_ptrs[MWL8K_TX_QUEUES];
	__le32 caps2;
	__le32 num_tx_desc_per_queue;
1577
	__le32 total_rxd;
1578 1579
} __attribute__((packed));

1580
static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
1581 1582
{
	struct mwl8k_priv *priv = hw->priv;
1583
	struct mwl8k_cmd_get_hw_spec_sta *cmd;
1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595
	int rc;
	int i;

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (cmd == NULL)
		return -ENOMEM;

	cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
	cmd->header.length = cpu_to_le16(sizeof(*cmd));

	memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
	cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
1596
	cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
1597
	cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES);
1598
	for (i = 0; i < MWL8K_TX_QUEUES; i++)
1599
		cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
1600
	cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
1601
	cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
1602 1603 1604 1605 1606 1607

	rc = mwl8k_post_cmd(hw, &cmd->header);

	if (!rc) {
		SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
		priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
1608
		priv->fw_rev = le32_to_cpu(cmd->fw_rev);
1609 1610 1611 1612 1613 1614 1615
		priv->hw_rev = cmd->hw_rev;
	}

	kfree(cmd);
	return rc;
}

1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738
/*
 * CMD_GET_HW_SPEC (AP version).
 */
struct mwl8k_cmd_get_hw_spec_ap {
	struct mwl8k_cmd_pkt header;
	__u8 hw_rev;
	__u8 host_interface;
	__le16 num_wcb;
	__le16 num_mcaddrs;
	__u8 perm_addr[ETH_ALEN];
	__le16 region_code;
	__le16 num_antenna;
	__le32 fw_rev;
	__le32 wcbbase0;
	__le32 rxwrptr;
	__le32 rxrdptr;
	__le32 ps_cookie;
	__le32 wcbbase1;
	__le32 wcbbase2;
	__le32 wcbbase3;
} __attribute__((packed));

static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
{
	struct mwl8k_priv *priv = hw->priv;
	struct mwl8k_cmd_get_hw_spec_ap *cmd;
	int rc;

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (cmd == NULL)
		return -ENOMEM;

	cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
	cmd->header.length = cpu_to_le16(sizeof(*cmd));

	memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
	cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);

	rc = mwl8k_post_cmd(hw, &cmd->header);

	if (!rc) {
		int off;

		SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
		priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
		priv->fw_rev = le32_to_cpu(cmd->fw_rev);
		priv->hw_rev = cmd->hw_rev;

		off = le32_to_cpu(cmd->wcbbase0) & 0xffff;
		iowrite32(cpu_to_le32(priv->txq[0].txd_dma), priv->sram + off);

		off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
		iowrite32(cpu_to_le32(priv->rxq[0].rxd_dma), priv->sram + off);

		off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
		iowrite32(cpu_to_le32(priv->rxq[0].rxd_dma), priv->sram + off);

		off = le32_to_cpu(cmd->wcbbase1) & 0xffff;
		iowrite32(cpu_to_le32(priv->txq[1].txd_dma), priv->sram + off);

		off = le32_to_cpu(cmd->wcbbase2) & 0xffff;
		iowrite32(cpu_to_le32(priv->txq[2].txd_dma), priv->sram + off);

		off = le32_to_cpu(cmd->wcbbase3) & 0xffff;
		iowrite32(cpu_to_le32(priv->txq[3].txd_dma), priv->sram + off);
	}

	kfree(cmd);
	return rc;
}

/*
 * CMD_SET_HW_SPEC.
 */
struct mwl8k_cmd_set_hw_spec {
	struct mwl8k_cmd_pkt header;
	__u8 hw_rev;
	__u8 host_interface;
	__le16 num_mcaddrs;
	__u8 perm_addr[ETH_ALEN];
	__le16 region_code;
	__le32 fw_rev;
	__le32 ps_cookie;
	__le32 caps;
	__le32 rx_queue_ptr;
	__le32 num_tx_queues;
	__le32 tx_queue_ptrs[MWL8K_TX_QUEUES];
	__le32 flags;
	__le32 num_tx_desc_per_queue;
	__le32 total_rxd;
} __attribute__((packed));

#define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT	0x00000080

static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
{
	struct mwl8k_priv *priv = hw->priv;
	struct mwl8k_cmd_set_hw_spec *cmd;
	int rc;
	int i;

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (cmd == NULL)
		return -ENOMEM;

	cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
	cmd->header.length = cpu_to_le16(sizeof(*cmd));

	cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
	cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
	cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES);
	for (i = 0; i < MWL8K_TX_QUEUES; i++)
		cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
	cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT);
	cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
	cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);

	rc = mwl8k_post_cmd(hw, &cmd->header);
	kfree(cmd);

	return rc;
}

1739 1740 1741 1742 1743 1744 1745
/*
 * CMD_MAC_MULTICAST_ADR.
 */
struct mwl8k_cmd_mac_multicast_adr {
	struct mwl8k_cmd_pkt header;
	__le16 action;
	__le16 numaddr;
1746
	__u8 addr[0][ETH_ALEN];
1747 1748
};

1749 1750 1751 1752
#define MWL8K_ENABLE_RX_DIRECTED	0x0001
#define MWL8K_ENABLE_RX_MULTICAST	0x0002
#define MWL8K_ENABLE_RX_ALL_MULTICAST	0x0004
#define MWL8K_ENABLE_RX_BROADCAST	0x0008
1753

1754
static struct mwl8k_cmd_pkt *
L
Lennert Buytenhek 已提交
1755
__mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
1756
			      int mc_count, struct dev_addr_list *mclist)
1757
{
1758
	struct mwl8k_priv *priv = hw->priv;
1759
	struct mwl8k_cmd_mac_multicast_adr *cmd;
1760 1761
	int size;

L
Lennert Buytenhek 已提交
1762
	if (allmulti || mc_count > priv->num_mcaddrs) {
1763 1764 1765
		allmulti = 1;
		mc_count = 0;
	}
1766 1767

	size = sizeof(*cmd) + mc_count * ETH_ALEN;
1768

1769
	cmd = kzalloc(size, GFP_ATOMIC);
1770
	if (cmd == NULL)
1771
		return NULL;
1772 1773 1774

	cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
	cmd->header.length = cpu_to_le16(size);
1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791
	cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
				  MWL8K_ENABLE_RX_BROADCAST);

	if (allmulti) {
		cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
	} else if (mc_count) {
		int i;

		cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
		cmd->numaddr = cpu_to_le16(mc_count);
		for (i = 0; i < mc_count && mclist; i++) {
			if (mclist->da_addrlen != ETH_ALEN) {
				kfree(cmd);
				return NULL;
			}
			memcpy(cmd->addr[i], mclist->da_addr, ETH_ALEN);
			mclist = mclist->next;
1792 1793 1794
		}
	}

1795
	return &cmd->header;
1796 1797 1798
}

/*
1799
 * CMD_GET_STAT.
1800
 */
1801
struct mwl8k_cmd_get_stat {
1802 1803 1804 1805 1806 1807 1808 1809 1810
	struct mwl8k_cmd_pkt header;
	__le32 stats[64];
} __attribute__((packed));

#define MWL8K_STAT_ACK_FAILURE	9
#define MWL8K_STAT_RTS_FAILURE	12
#define MWL8K_STAT_FCS_ERROR	24
#define MWL8K_STAT_RTS_SUCCESS	11

1811 1812
static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
			      struct ieee80211_low_level_stats *stats)
1813
{
1814
	struct mwl8k_cmd_get_stat *cmd;
1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840
	int rc;

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (cmd == NULL)
		return -ENOMEM;

	cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
	cmd->header.length = cpu_to_le16(sizeof(*cmd));

	rc = mwl8k_post_cmd(hw, &cmd->header);
	if (!rc) {
		stats->dot11ACKFailureCount =
			le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
		stats->dot11RTSFailureCount =
			le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
		stats->dot11FCSErrorCount =
			le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
		stats->dot11RTSSuccessCount =
			le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
	}
	kfree(cmd);

	return rc;
}

/*
1841
 * CMD_RADIO_CONTROL.
1842
 */
1843
struct mwl8k_cmd_radio_control {
1844 1845 1846 1847 1848 1849
	struct mwl8k_cmd_pkt header;
	__le16 action;
	__le16 control;
	__le16 radio_on;
} __attribute__((packed));

1850
static int
1851
mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
1852 1853
{
	struct mwl8k_priv *priv = hw->priv;
1854
	struct mwl8k_cmd_radio_control *cmd;
1855 1856
	int rc;

1857
	if (enable == priv->radio_on && !force)
1858 1859 1860 1861 1862 1863 1864 1865 1866
		return 0;

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (cmd == NULL)
		return -ENOMEM;

	cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
	cmd->header.length = cpu_to_le16(sizeof(*cmd));
	cmd->action = cpu_to_le16(MWL8K_CMD_SET);
1867
	cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
1868 1869 1870 1871 1872 1873
	cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);

	rc = mwl8k_post_cmd(hw, &cmd->header);
	kfree(cmd);

	if (!rc)
1874
		priv->radio_on = enable;
1875 1876 1877 1878

	return rc;
}

1879
static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
1880
{
1881
	return mwl8k_cmd_radio_control(hw, 0, 0);
1882 1883
}

1884
static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
1885
{
1886
	return mwl8k_cmd_radio_control(hw, 1, 0);
1887 1888
}

1889 1890 1891
static int
mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
{
1892
	struct mwl8k_priv *priv = hw->priv;
1893

1894
	priv->radio_short_preamble = short_preamble;
1895

1896
	return mwl8k_cmd_radio_control(hw, 1, 1);
1897 1898 1899
}

/*
1900
 * CMD_RF_TX_POWER.
1901 1902 1903
 */
#define MWL8K_TX_POWER_LEVEL_TOTAL	8

1904
struct mwl8k_cmd_rf_tx_power {
1905 1906 1907 1908 1909 1910 1911 1912
	struct mwl8k_cmd_pkt header;
	__le16 action;
	__le16 support_level;
	__le16 current_level;
	__le16 reserved;
	__le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
} __attribute__((packed));

1913
static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
1914
{
1915
	struct mwl8k_cmd_rf_tx_power *cmd;
1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932
	int rc;

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (cmd == NULL)
		return -ENOMEM;

	cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
	cmd->header.length = cpu_to_le16(sizeof(*cmd));
	cmd->action = cpu_to_le16(MWL8K_CMD_SET);
	cmd->support_level = cpu_to_le16(dBm);

	rc = mwl8k_post_cmd(hw, &cmd->header);
	kfree(cmd);

	return rc;
}

1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965
/*
 * CMD_RF_ANTENNA.
 */
struct mwl8k_cmd_rf_antenna {
	struct mwl8k_cmd_pkt header;
	__le16 antenna;
	__le16 mode;
} __attribute__((packed));

#define MWL8K_RF_ANTENNA_RX		1
#define MWL8K_RF_ANTENNA_TX		2

static int
mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
{
	struct mwl8k_cmd_rf_antenna *cmd;
	int rc;

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (cmd == NULL)
		return -ENOMEM;

	cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
	cmd->header.length = cpu_to_le16(sizeof(*cmd));
	cmd->antenna = cpu_to_le16(antenna);
	cmd->mode = cpu_to_le16(mask);

	rc = mwl8k_post_cmd(hw, &cmd->header);
	kfree(cmd);

	return rc;
}

1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996
/*
 * CMD_SET_PRE_SCAN.
 */
struct mwl8k_cmd_set_pre_scan {
	struct mwl8k_cmd_pkt header;
} __attribute__((packed));

static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
{
	struct mwl8k_cmd_set_pre_scan *cmd;
	int rc;

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (cmd == NULL)
		return -ENOMEM;

	cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
	cmd->header.length = cpu_to_le16(sizeof(*cmd));

	rc = mwl8k_post_cmd(hw, &cmd->header);
	kfree(cmd);

	return rc;
}

/*
 * CMD_SET_POST_SCAN.
 */
struct mwl8k_cmd_set_post_scan {
	struct mwl8k_cmd_pkt header;
	__le32 isibss;
1997
	__u8 bssid[ETH_ALEN];
1998 1999 2000
} __attribute__((packed));

static int
2001
mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
{
	struct mwl8k_cmd_set_post_scan *cmd;
	int rc;

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (cmd == NULL)
		return -ENOMEM;

	cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
	cmd->header.length = cpu_to_le16(sizeof(*cmd));
	cmd->isibss = 0;
2013
	memcpy(cmd->bssid, mac, ETH_ALEN);
2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056

	rc = mwl8k_post_cmd(hw, &cmd->header);
	kfree(cmd);

	return rc;
}

/*
 * CMD_SET_RF_CHANNEL.
 */
struct mwl8k_cmd_set_rf_channel {
	struct mwl8k_cmd_pkt header;
	__le16 action;
	__u8 current_channel;
	__le32 channel_flags;
} __attribute__((packed));

static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
				    struct ieee80211_channel *channel)
{
	struct mwl8k_cmd_set_rf_channel *cmd;
	int rc;

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (cmd == NULL)
		return -ENOMEM;

	cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
	cmd->header.length = cpu_to_le16(sizeof(*cmd));
	cmd->action = cpu_to_le16(MWL8K_CMD_SET);
	cmd->current_channel = channel->hw_value;
	if (channel->band == IEEE80211_BAND_2GHZ)
		cmd->channel_flags = cpu_to_le32(0x00000081);
	else
		cmd->channel_flags = cpu_to_le32(0x00000000);

	rc = mwl8k_post_cmd(hw, &cmd->header);
	kfree(cmd);

	return rc;
}

/*
2057
 * CMD_SET_AID.
2058
 */
2059 2060 2061 2062
#define MWL8K_FRAME_PROT_DISABLED			0x00
#define MWL8K_FRAME_PROT_11G				0x07
#define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY		0x02
#define MWL8K_FRAME_PROT_11N_HT_ALL			0x06
2063

2064 2065 2066
struct mwl8k_cmd_update_set_aid {
	struct	mwl8k_cmd_pkt header;
	__le16	aid;
2067

2068 2069 2070 2071
	 /* AP's MAC address (BSSID) */
	__u8	bssid[ETH_ALEN];
	__le16	protection_mode;
	__u8	supp_rates[14];
2072 2073
} __attribute__((packed));

2074 2075
static int
mwl8k_cmd_set_aid(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
2076
{
2077 2078
	struct mwl8k_cmd_update_set_aid *cmd;
	u16 prot_mode;
2079 2080 2081 2082 2083 2084
	int rc;

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (cmd == NULL)
		return -ENOMEM;

2085
	cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
2086
	cmd->header.length = cpu_to_le16(sizeof(*cmd));
2087
	cmd->aid = cpu_to_le16(vif->bss_conf.aid);
2088

2089
	memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
2090

2091
	if (vif->bss_conf.use_cts_prot) {
2092 2093
		prot_mode = MWL8K_FRAME_PROT_11G;
	} else {
2094
		switch (vif->bss_conf.ht_operation_mode &
2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107
			IEEE80211_HT_OP_MODE_PROTECTION) {
		case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
			prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
			break;
		case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
			prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
			break;
		default:
			prot_mode = MWL8K_FRAME_PROT_DISABLED;
			break;
		}
	}
	cmd->protection_mode = cpu_to_le16(prot_mode);
2108

2109
	memcpy(cmd->supp_rates, mwl8k_rateids, sizeof(mwl8k_rateids));
2110 2111 2112 2113 2114 2115 2116

	rc = mwl8k_post_cmd(hw, &cmd->header);
	kfree(cmd);

	return rc;
}

2117
/*
2118
 * CMD_SET_RATE.
2119
 */
2120 2121 2122 2123 2124 2125 2126
struct mwl8k_cmd_set_rate {
	struct	mwl8k_cmd_pkt header;
	__u8	legacy_rates[14];

	/* Bitmap for supported MCS codes.  */
	__u8	mcs_set[16];
	__u8	reserved[16];
2127 2128
} __attribute__((packed));

2129 2130
static int
mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
2131
{
2132
	struct mwl8k_cmd_set_rate *cmd;
2133 2134 2135 2136 2137 2138
	int rc;

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (cmd == NULL)
		return -ENOMEM;

2139
	cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
2140
	cmd->header.length = cpu_to_le16(sizeof(*cmd));
2141
	memcpy(cmd->legacy_rates, mwl8k_rateids, sizeof(mwl8k_rateids));
2142 2143 2144 2145 2146 2147 2148

	rc = mwl8k_post_cmd(hw, &cmd->header);
	kfree(cmd);

	return rc;
}

2149
/*
2150
 * CMD_FINALIZE_JOIN.
2151
 */
2152 2153 2154
#define MWL8K_FJ_BEACON_MAXLEN	128

struct mwl8k_cmd_finalize_join {
2155
	struct mwl8k_cmd_pkt header;
2156 2157
	__le32 sleep_interval;	/* Number of beacon periods to sleep */
	__u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
2158 2159
} __attribute__((packed));

2160 2161
static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
				   int framelen, int dtim)
2162
{
2163 2164 2165
	struct mwl8k_cmd_finalize_join *cmd;
	struct ieee80211_mgmt *payload = frame;
	int payload_len;
2166 2167 2168 2169 2170 2171
	int rc;

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (cmd == NULL)
		return -ENOMEM;

2172
	cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
2173
	cmd->header.length = cpu_to_le16(sizeof(*cmd));
2174 2175 2176 2177 2178 2179 2180 2181 2182
	cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);

	payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
	if (payload_len < 0)
		payload_len = 0;
	else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
		payload_len = MWL8K_FJ_BEACON_MAXLEN;

	memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
2183 2184 2185 2186 2187 2188 2189 2190

	rc = mwl8k_post_cmd(hw, &cmd->header);
	kfree(cmd);

	return rc;
}

/*
2191
 * CMD_SET_RTS_THRESHOLD.
2192
 */
2193
struct mwl8k_cmd_set_rts_threshold {
2194 2195
	struct mwl8k_cmd_pkt header;
	__le16 action;
2196
	__le16 threshold;
2197 2198
} __attribute__((packed));

2199 2200
static int mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw,
				       u16 action, u16 threshold)
2201
{
2202
	struct mwl8k_cmd_set_rts_threshold *cmd;
2203 2204 2205 2206 2207 2208
	int rc;

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (cmd == NULL)
		return -ENOMEM;

2209
	cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
2210
	cmd->header.length = cpu_to_le16(sizeof(*cmd));
2211 2212
	cmd->action = cpu_to_le16(action);
	cmd->threshold = cpu_to_le16(threshold);
2213 2214 2215 2216 2217 2218 2219 2220

	rc = mwl8k_post_cmd(hw, &cmd->header);
	kfree(cmd);

	return rc;
}

/*
2221
 * CMD_SET_SLOT.
2222
 */
2223
struct mwl8k_cmd_set_slot {
2224 2225
	struct mwl8k_cmd_pkt header;
	__le16 action;
2226
	__u8 short_slot;
2227 2228
} __attribute__((packed));

2229
static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
2230
{
2231
	struct mwl8k_cmd_set_slot *cmd;
2232 2233 2234 2235 2236 2237
	int rc;

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (cmd == NULL)
		return -ENOMEM;

2238
	cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
2239
	cmd->header.length = cpu_to_le16(sizeof(*cmd));
2240 2241
	cmd->action = cpu_to_le16(MWL8K_CMD_SET);
	cmd->short_slot = short_slot_time;
2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260

	rc = mwl8k_post_cmd(hw, &cmd->header);
	kfree(cmd);

	return rc;
}

/*
 * CMD_SET_EDCA_PARAMS.
 */
struct mwl8k_cmd_set_edca_params {
	struct mwl8k_cmd_pkt header;

	/* See MWL8K_SET_EDCA_XXX below */
	__le16 action;

	/* TX opportunity in units of 32 us */
	__le16 txop;

2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277
	union {
		struct {
			/* Log exponent of max contention period: 0...15 */
			__le32 log_cw_max;

			/* Log exponent of min contention period: 0...15 */
			__le32 log_cw_min;

			/* Adaptive interframe spacing in units of 32us */
			__u8 aifs;

			/* TX queue to configure */
			__u8 txq;
		} ap;
		struct {
			/* Log exponent of max contention period: 0...15 */
			__u8 log_cw_max;
2278

2279 2280
			/* Log exponent of min contention period: 0...15 */
			__u8 log_cw_min;
2281

2282 2283
			/* Adaptive interframe spacing in units of 32us */
			__u8 aifs;
2284

2285 2286 2287 2288
			/* TX queue to configure */
			__u8 txq;
		} sta;
	};
2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299
} __attribute__((packed));

#define MWL8K_SET_EDCA_CW	0x01
#define MWL8K_SET_EDCA_TXOP	0x02
#define MWL8K_SET_EDCA_AIFS	0x04

#define MWL8K_SET_EDCA_ALL	(MWL8K_SET_EDCA_CW | \
				 MWL8K_SET_EDCA_TXOP | \
				 MWL8K_SET_EDCA_AIFS)

static int
2300 2301 2302
mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
			  __u16 cw_min, __u16 cw_max,
			  __u8 aifs, __u16 txop)
2303
{
2304
	struct mwl8k_priv *priv = hw->priv;
2305 2306 2307 2308 2309 2310 2311
	struct mwl8k_cmd_set_edca_params *cmd;
	int rc;

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (cmd == NULL)
		return -ENOMEM;

2312 2313 2314 2315 2316 2317
	/*
	 * Queues 0 (BE) and 1 (BK) are swapped in hardware for
	 * this call.
	 */
	qnum ^= !(qnum >> 1);

2318 2319 2320 2321
	cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
	cmd->header.length = cpu_to_le16(sizeof(*cmd));
	cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
	cmd->txop = cpu_to_le16(txop);
2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332
	if (priv->ap_fw) {
		cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
		cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
		cmd->ap.aifs = aifs;
		cmd->ap.txq = qnum;
	} else {
		cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
		cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
		cmd->sta.aifs = aifs;
		cmd->sta.txq = qnum;
	}
2333 2334 2335 2336 2337 2338 2339 2340

	rc = mwl8k_post_cmd(hw, &cmd->header);
	kfree(cmd);

	return rc;
}

/*
2341
 * CMD_SET_WMM_MODE.
2342
 */
2343
struct mwl8k_cmd_set_wmm_mode {
2344
	struct mwl8k_cmd_pkt header;
2345
	__le16 action;
2346 2347
} __attribute__((packed));

2348
static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
2349
{
2350 2351
	struct mwl8k_priv *priv = hw->priv;
	struct mwl8k_cmd_set_wmm_mode *cmd;
2352 2353 2354 2355 2356 2357
	int rc;

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (cmd == NULL)
		return -ENOMEM;

2358
	cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
2359
	cmd->header.length = cpu_to_le16(sizeof(*cmd));
2360
	cmd->action = cpu_to_le16(!!enable);
2361 2362 2363

	rc = mwl8k_post_cmd(hw, &cmd->header);
	kfree(cmd);
2364

2365 2366
	if (!rc)
		priv->wmm_enabled = enable;
2367 2368 2369 2370 2371

	return rc;
}

/*
2372
 * CMD_MIMO_CONFIG.
2373
 */
2374 2375 2376 2377 2378
struct mwl8k_cmd_mimo_config {
	struct mwl8k_cmd_pkt header;
	__le32 action;
	__u8 rx_antenna_map;
	__u8 tx_antenna_map;
2379 2380
} __attribute__((packed));

2381
static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
2382
{
2383
	struct mwl8k_cmd_mimo_config *cmd;
2384 2385 2386 2387 2388 2389
	int rc;

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (cmd == NULL)
		return -ENOMEM;

2390
	cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
2391
	cmd->header.length = cpu_to_le16(sizeof(*cmd));
2392 2393 2394
	cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
	cmd->rx_antenna_map = rx;
	cmd->tx_antenna_map = tx;
2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458

	rc = mwl8k_post_cmd(hw, &cmd->header);
	kfree(cmd);

	return rc;
}

/*
 * CMD_USE_FIXED_RATE.
 */
#define MWL8K_RATE_TABLE_SIZE	8
#define MWL8K_UCAST_RATE	0
#define MWL8K_USE_AUTO_RATE	0x0002

struct mwl8k_rate_entry {
	/* Set to 1 if HT rate, 0 if legacy.  */
	__le32	is_ht_rate;

	/* Set to 1 to use retry_count field.  */
	__le32	enable_retry;

	/* Specified legacy rate or MCS.  */
	__le32	rate;

	/* Number of allowed retries.  */
	__le32	retry_count;
} __attribute__((packed));

struct mwl8k_rate_table {
	/* 1 to allow specified rate and below */
	__le32	allow_rate_drop;
	__le32	num_rates;
	struct mwl8k_rate_entry rate_entry[MWL8K_RATE_TABLE_SIZE];
} __attribute__((packed));

struct mwl8k_cmd_use_fixed_rate {
	struct	mwl8k_cmd_pkt header;
	__le32	action;
	struct mwl8k_rate_table rate_table;

	/* Unicast, Broadcast or Multicast */
	__le32	rate_type;
	__le32	reserved1;
	__le32	reserved2;
} __attribute__((packed));

static int mwl8k_cmd_use_fixed_rate(struct ieee80211_hw *hw,
	u32 action, u32 rate_type, struct mwl8k_rate_table *rate_table)
{
	struct mwl8k_cmd_use_fixed_rate *cmd;
	int count;
	int rc;

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (cmd == NULL)
		return -ENOMEM;

	cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
	cmd->header.length = cpu_to_le16(sizeof(*cmd));

	cmd->action = cpu_to_le32(action);
	cmd->rate_type = cpu_to_le32(rate_type);

	if (rate_table != NULL) {
L
Lennert Buytenhek 已提交
2459 2460 2461 2462
		/*
		 * Copy over each field manually so that endian
		 * conversion can be done.
		 */
2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486
		cmd->rate_table.allow_rate_drop =
				cpu_to_le32(rate_table->allow_rate_drop);
		cmd->rate_table.num_rates =
				cpu_to_le32(rate_table->num_rates);

		for (count = 0; count < rate_table->num_rates; count++) {
			struct mwl8k_rate_entry *dst =
				&cmd->rate_table.rate_entry[count];
			struct mwl8k_rate_entry *src =
				&rate_table->rate_entry[count];

			dst->is_ht_rate = cpu_to_le32(src->is_ht_rate);
			dst->enable_retry = cpu_to_le32(src->enable_retry);
			dst->rate = cpu_to_le32(src->rate);
			dst->retry_count = cpu_to_le32(src->retry_count);
		}
	}

	rc = mwl8k_post_cmd(hw, &cmd->header);
	kfree(cmd);

	return rc;
}

2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584
/*
 * CMD_ENABLE_SNIFFER.
 */
struct mwl8k_cmd_enable_sniffer {
	struct mwl8k_cmd_pkt header;
	__le32 action;
} __attribute__((packed));

static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
{
	struct mwl8k_cmd_enable_sniffer *cmd;
	int rc;

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (cmd == NULL)
		return -ENOMEM;

	cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
	cmd->header.length = cpu_to_le16(sizeof(*cmd));
	cmd->action = cpu_to_le32(!!enable);

	rc = mwl8k_post_cmd(hw, &cmd->header);
	kfree(cmd);

	return rc;
}

/*
 * CMD_SET_MAC_ADDR.
 */
struct mwl8k_cmd_set_mac_addr {
	struct mwl8k_cmd_pkt header;
	union {
		struct {
			__le16 mac_type;
			__u8 mac_addr[ETH_ALEN];
		} mbss;
		__u8 mac_addr[ETH_ALEN];
	};
} __attribute__((packed));

static int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw, u8 *mac)
{
	struct mwl8k_priv *priv = hw->priv;
	struct mwl8k_cmd_set_mac_addr *cmd;
	int rc;

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (cmd == NULL)
		return -ENOMEM;

	cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
	cmd->header.length = cpu_to_le16(sizeof(*cmd));
	if (priv->ap_fw) {
		cmd->mbss.mac_type = 0;
		memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
	} else {
		memcpy(cmd->mac_addr, mac, ETH_ALEN);
	}

	rc = mwl8k_post_cmd(hw, &cmd->header);
	kfree(cmd);

	return rc;
}

/*
 * CMD_SET_RATEADAPT_MODE.
 */
struct mwl8k_cmd_set_rate_adapt_mode {
	struct mwl8k_cmd_pkt header;
	__le16 action;
	__le16 mode;
} __attribute__((packed));

static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
{
	struct mwl8k_cmd_set_rate_adapt_mode *cmd;
	int rc;

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (cmd == NULL)
		return -ENOMEM;

	cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
	cmd->header.length = cpu_to_le16(sizeof(*cmd));
	cmd->action = cpu_to_le16(MWL8K_CMD_SET);
	cmd->mode = cpu_to_le16(mode);

	rc = mwl8k_post_cmd(hw, &cmd->header);
	kfree(cmd);

	return rc;
}

/*
 * CMD_UPDATE_STADB.
 */
2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627
#define MWL8K_STA_DB_ADD_ENTRY		0
#define MWL8K_STA_DB_MODIFY_ENTRY	1
#define MWL8K_STA_DB_DEL_ENTRY		2
#define MWL8K_STA_DB_FLUSH		3

/* Peer Entry flags - used to define the type of the peer node */
#define MWL8K_PEER_TYPE_ACCESSPOINT	2

struct ewc_ht_info {
	__le16	control1;
	__le16	control2;
	__le16	control3;
} __attribute__((packed));

struct peer_capability_info {
	/* Peer type - AP vs. STA.  */
	__u8	peer_type;

	/* Basic 802.11 capabilities from assoc resp.  */
	__le16	basic_caps;

	/* Set if peer supports 802.11n high throughput (HT).  */
	__u8	ht_support;

	/* Valid if HT is supported.  */
	__le16	ht_caps;
	__u8	extended_ht_caps;
	struct ewc_ht_info	ewc_info;

	/* Legacy rate table. Intersection of our rates and peer rates.  */
	__u8	legacy_rates[12];

	/* HT rate table. Intersection of our rates and peer rates.  */
	__u8	ht_rates[16];
	__u8	pad[16];

	/* If set, interoperability mode, no proprietary extensions.  */
	__u8	interop;
	__u8	pad2;
	__u8	station_id;
	__le16	amsdu_enabled;
} __attribute__((packed));

2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643
struct mwl8k_cmd_update_stadb {
	struct mwl8k_cmd_pkt header;

	/* See STADB_ACTION_TYPE */
	__le32	action;

	/* Peer MAC address */
	__u8	peer_addr[ETH_ALEN];

	__le32	reserved;

	/* Peer info - valid during add/update.  */
	struct peer_capability_info	peer_info;
} __attribute__((packed));

static int mwl8k_cmd_update_stadb(struct ieee80211_hw *hw,
2644
		struct ieee80211_vif *vif, __u32 action, u8 *addr)
2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659
{
	struct mwl8k_vif *mv_vif = MWL8K_VIF(vif);
	struct mwl8k_cmd_update_stadb *cmd;
	struct peer_capability_info *peer_info;
	int rc;

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (cmd == NULL)
		return -ENOMEM;

	cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
	cmd->header.length = cpu_to_le16(sizeof(*cmd));

	cmd->action = cpu_to_le32(action);
	peer_info = &cmd->peer_info;
2660
	memcpy(cmd->peer_addr, addr, ETH_ALEN);
2661 2662 2663 2664 2665 2666

	switch (action) {
	case MWL8K_STA_DB_ADD_ENTRY:
	case MWL8K_STA_DB_MODIFY_ENTRY:
		/* Build peer_info block */
		peer_info->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
2667 2668
		peer_info->basic_caps =
			cpu_to_le16(vif->bss_conf.assoc_capability);
2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692
		memcpy(peer_info->legacy_rates, mwl8k_rateids,
		       sizeof(mwl8k_rateids));
		peer_info->interop = 1;
		peer_info->amsdu_enabled = 0;

		rc = mwl8k_post_cmd(hw, &cmd->header);
		if (rc == 0)
			mv_vif->peer_id = peer_info->station_id;

		break;

	case MWL8K_STA_DB_DEL_ENTRY:
	case MWL8K_STA_DB_FLUSH:
	default:
		rc = mwl8k_post_cmd(hw, &cmd->header);
		if (rc == 0)
			mv_vif->peer_id = 0;
		break;
	}
	kfree(cmd);

	return rc;
}

2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717

/*
 * Interrupt handling.
 */
static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
{
	struct ieee80211_hw *hw = dev_id;
	struct mwl8k_priv *priv = hw->priv;
	u32 status;

	status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
	iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);

	if (!status)
		return IRQ_NONE;

	if (status & MWL8K_A2H_INT_TX_DONE)
		tasklet_schedule(&priv->tx_reclaim_task);

	if (status & MWL8K_A2H_INT_RX_READY) {
		while (rxq_process(hw, 0, 1))
			rxq_refill(hw, 0, 1);
	}

	if (status & MWL8K_A2H_INT_OPC_DONE) {
2718
		if (priv->hostcmd_wait != NULL)
2719 2720 2721 2722
			complete(priv->hostcmd_wait);
	}

	if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
2723
		if (!mutex_is_locked(&priv->fw_mutex) &&
2724
		    priv->radio_on && priv->pending_tx_pkts)
2725
			mwl8k_tx_start(priv);
2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742
	}

	return IRQ_HANDLED;
}


/*
 * Core driver operations.
 */
static int mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
{
	struct mwl8k_priv *priv = hw->priv;
	int index = skb_get_queue_mapping(skb);
	int rc;

	if (priv->current_channel == NULL) {
		printk(KERN_DEBUG "%s: dropped TX frame since radio "
L
Lennert Buytenhek 已提交
2743
		       "disabled\n", wiphy_name(hw->wiphy));
2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757
		dev_kfree_skb(skb);
		return NETDEV_TX_OK;
	}

	rc = mwl8k_txq_xmit(hw, index, skb);

	return rc;
}

static int mwl8k_start(struct ieee80211_hw *hw)
{
	struct mwl8k_priv *priv = hw->priv;
	int rc;

2758
	rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
2759 2760 2761
			 IRQF_SHARED, MWL8K_NAME, hw);
	if (rc) {
		printk(KERN_ERR "%s: failed to register IRQ handler\n",
L
Lennert Buytenhek 已提交
2762
		       wiphy_name(hw->wiphy));
2763
		return -EIO;
2764 2765
	}

2766 2767 2768
	/* Enable tx reclaim tasklet */
	tasklet_enable(&priv->tx_reclaim_task);

2769
	/* Enable interrupts */
2770
	iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
2771

2772 2773
	rc = mwl8k_fw_lock(hw);
	if (!rc) {
2774
		rc = mwl8k_cmd_radio_enable(hw);
2775

2776 2777
		if (!priv->ap_fw) {
			if (!rc)
2778
				rc = mwl8k_cmd_enable_sniffer(hw, 0);
2779

2780 2781 2782 2783 2784 2785 2786
			if (!rc)
				rc = mwl8k_cmd_set_pre_scan(hw);

			if (!rc)
				rc = mwl8k_cmd_set_post_scan(hw,
						"\x00\x00\x00\x00\x00\x00");
		}
2787 2788

		if (!rc)
2789
			rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
2790

2791
		if (!rc)
2792
			rc = mwl8k_cmd_set_wmm_mode(hw, 0);
2793

2794 2795 2796 2797 2798 2799 2800 2801
		mwl8k_fw_unlock(hw);
	}

	if (rc) {
		iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
		free_irq(priv->pdev->irq, hw);
		tasklet_disable(&priv->tx_reclaim_task);
	}
2802 2803 2804 2805 2806 2807 2808 2809 2810

	return rc;
}

static void mwl8k_stop(struct ieee80211_hw *hw)
{
	struct mwl8k_priv *priv = hw->priv;
	int i;

2811
	mwl8k_cmd_radio_disable(hw);
2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832

	ieee80211_stop_queues(hw);

	/* Disable interrupts */
	iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
	free_irq(priv->pdev->irq, hw);

	/* Stop finalize join worker */
	cancel_work_sync(&priv->finalize_join_worker);
	if (priv->beacon_skb != NULL)
		dev_kfree_skb(priv->beacon_skb);

	/* Stop tx reclaim tasklet */
	tasklet_disable(&priv->tx_reclaim_task);

	/* Return all skbs to mac80211 */
	for (i = 0; i < MWL8K_TX_QUEUES; i++)
		mwl8k_txq_reclaim(hw, i, 1);
}

static int mwl8k_add_interface(struct ieee80211_hw *hw,
2833
				struct ieee80211_vif *vif)
2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846
{
	struct mwl8k_priv *priv = hw->priv;
	struct mwl8k_vif *mwl8k_vif;

	/*
	 * We only support one active interface at a time.
	 */
	if (priv->vif != NULL)
		return -EBUSY;

	/*
	 * We only support managed interfaces for now.
	 */
2847
	if (vif->type != NL80211_IFTYPE_STATION)
2848 2849
		return -EINVAL;

2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861
	/*
	 * Reject interface creation if sniffer mode is active, as
	 * STA operation is mutually exclusive with hardware sniffer
	 * mode.
	 */
	if (priv->sniffer_enabled) {
		printk(KERN_INFO "%s: unable to create STA "
		       "interface due to sniffer mode being enabled\n",
		       wiphy_name(hw->wiphy));
		return -EINVAL;
	}

2862
	/* Clean out driver private area */
2863
	mwl8k_vif = MWL8K_VIF(vif);
2864 2865
	memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));

2866
	/* Set and save the mac address */
2867 2868
	mwl8k_cmd_set_mac_addr(hw, vif->addr);
	memcpy(mwl8k_vif->mac_addr, vif->addr, ETH_ALEN);
2869 2870 2871 2872

	/* Set Initial sequence number to zero */
	mwl8k_vif->seqno = 0;

2873
	priv->vif = vif;
2874 2875 2876 2877 2878 2879
	priv->current_channel = NULL;

	return 0;
}

static void mwl8k_remove_interface(struct ieee80211_hw *hw,
2880
				   struct ieee80211_vif *vif)
2881 2882 2883 2884 2885 2886
{
	struct mwl8k_priv *priv = hw->priv;

	if (priv->vif == NULL)
		return;

2887
	mwl8k_cmd_set_mac_addr(hw, "\x00\x00\x00\x00\x00\x00");
2888

2889 2890 2891
	priv->vif = NULL;
}

2892
static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
2893 2894 2895
{
	struct ieee80211_conf *conf = &hw->conf;
	struct mwl8k_priv *priv = hw->priv;
2896
	int rc;
2897

L
Lennert Buytenhek 已提交
2898
	if (conf->flags & IEEE80211_CONF_IDLE) {
2899
		mwl8k_cmd_radio_disable(hw);
L
Lennert Buytenhek 已提交
2900
		priv->current_channel = NULL;
2901
		return 0;
L
Lennert Buytenhek 已提交
2902 2903
	}

2904 2905 2906
	rc = mwl8k_fw_lock(hw);
	if (rc)
		return rc;
2907

2908
	rc = mwl8k_cmd_radio_enable(hw);
2909 2910
	if (rc)
		goto out;
2911

2912 2913 2914 2915 2916
	rc = mwl8k_cmd_set_rf_channel(hw, conf->channel);
	if (rc)
		goto out;

	priv->current_channel = conf->channel;
2917 2918 2919

	if (conf->power_level > 18)
		conf->power_level = 18;
2920
	rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
2921 2922
	if (rc)
		goto out;
2923

2924 2925 2926 2927 2928 2929 2930
	if (priv->ap_fw) {
		rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x7);
		if (!rc)
			rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
	} else {
		rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
	}
2931

2932 2933
out:
	mwl8k_fw_unlock(hw);
2934

2935
	return rc;
2936 2937
}

2938 2939 2940 2941
static void mwl8k_bss_info_changed(struct ieee80211_hw *hw,
				   struct ieee80211_vif *vif,
				   struct ieee80211_bss_conf *info,
				   u32 changed)
2942 2943
{
	struct mwl8k_priv *priv = hw->priv;
2944 2945 2946 2947
	int rc;

	if ((changed & BSS_CHANGED_ASSOC) == 0)
		return;
2948 2949 2950

	priv->capture_beacon = false;

2951
	rc = mwl8k_fw_lock(hw);
2952
	if (rc)
2953 2954
		return;

2955
	if (vif->bss_conf.assoc) {
2956
		/* Install rates */
2957
		rc = mwl8k_cmd_set_rate(hw, vif);
2958 2959
		if (rc)
			goto out;
2960 2961

		/* Turn on rate adaptation */
2962 2963 2964 2965
		rc = mwl8k_cmd_use_fixed_rate(hw, MWL8K_USE_AUTO_RATE,
			MWL8K_UCAST_RATE, NULL);
		if (rc)
			goto out;
2966 2967

		/* Set radio preamble */
2968 2969
		rc = mwl8k_set_radio_preamble(hw,
				vif->bss_conf.use_short_preamble);
2970 2971
		if (rc)
			goto out;
2972 2973

		/* Set slot time */
2974
		rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
2975 2976
		if (rc)
			goto out;
2977 2978

		/* Set AID */
2979 2980 2981
		rc = mwl8k_cmd_set_aid(hw, vif);
		if (rc)
			goto out;
2982 2983 2984 2985 2986

		/*
		 * Finalize the join.  Tell rx handler to process
		 * next beacon from our BSSID.
		 */
2987
		memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
2988 2989 2990
		priv->capture_beacon = true;
	}

2991 2992
out:
	mwl8k_fw_unlock(hw);
2993 2994
}

2995 2996 2997 2998 2999
static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
				   int mc_count, struct dev_addr_list *mclist)
{
	struct mwl8k_cmd_pkt *cmd;

L
Lennert Buytenhek 已提交
3000 3001 3002 3003 3004 3005 3006 3007
	/*
	 * Synthesize and return a command packet that programs the
	 * hardware multicast address filter.  At this point we don't
	 * know whether FIF_ALLMULTI is being requested, but if it is,
	 * we'll end up throwing this packet away and creating a new
	 * one in mwl8k_configure_filter().
	 */
	cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_count, mclist);
3008 3009 3010 3011

	return (unsigned long)cmd;
}

3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032
static int
mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
			       unsigned int changed_flags,
			       unsigned int *total_flags)
{
	struct mwl8k_priv *priv = hw->priv;

	/*
	 * Hardware sniffer mode is mutually exclusive with STA
	 * operation, so refuse to enable sniffer mode if a STA
	 * interface is active.
	 */
	if (priv->vif != NULL) {
		if (net_ratelimit())
			printk(KERN_INFO "%s: not enabling sniffer "
			       "mode because STA interface is active\n",
			       wiphy_name(hw->wiphy));
		return 0;
	}

	if (!priv->sniffer_enabled) {
3033
		if (mwl8k_cmd_enable_sniffer(hw, 1))
3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044
			return 0;
		priv->sniffer_enabled = true;
	}

	*total_flags &=	FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
			FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
			FIF_OTHER_BSS;

	return 1;
}

3045 3046 3047 3048 3049 3050
static void mwl8k_configure_filter(struct ieee80211_hw *hw,
				   unsigned int changed_flags,
				   unsigned int *total_flags,
				   u64 multicast)
{
	struct mwl8k_priv *priv = hw->priv;
3051 3052
	struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;

3053 3054 3055 3056 3057 3058 3059 3060 3061 3062
	/*
	 * AP firmware doesn't allow fine-grained control over
	 * the receive filter.
	 */
	if (priv->ap_fw) {
		*total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
		kfree(cmd);
		return;
	}

3063 3064 3065 3066 3067 3068 3069 3070 3071
	/*
	 * Enable hardware sniffer mode if FIF_CONTROL or
	 * FIF_OTHER_BSS is requested.
	 */
	if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
	    mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
		kfree(cmd);
		return;
	}
3072

3073
	/* Clear unsupported feature flags */
L
Lennert Buytenhek 已提交
3074
	*total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
3075

3076 3077
	if (mwl8k_fw_lock(hw))
		return;
3078

3079
	if (priv->sniffer_enabled) {
3080
		mwl8k_cmd_enable_sniffer(hw, 0);
3081 3082 3083
		priv->sniffer_enabled = false;
	}

3084
	if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
3085 3086 3087 3088
		if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
			/*
			 * Disable the BSS filter.
			 */
3089
			mwl8k_cmd_set_pre_scan(hw);
3090
		} else {
3091
			const u8 *bssid;
3092

3093 3094 3095 3096 3097 3098 3099 3100 3101
			/*
			 * Enable the BSS filter.
			 *
			 * If there is an active STA interface, use that
			 * interface's BSSID, otherwise use a dummy one
			 * (where the OUI part needs to be nonzero for
			 * the BSSID to be accepted by POST_SCAN).
			 */
			bssid = "\x01\x00\x00\x00\x00\x00";
3102
			if (priv->vif != NULL)
3103
				bssid = priv->vif->bss_conf.bssid;
3104

3105
			mwl8k_cmd_set_post_scan(hw, bssid);
3106 3107 3108
		}
	}

L
Lennert Buytenhek 已提交
3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122
	/*
	 * If FIF_ALLMULTI is being requested, throw away the command
	 * packet that ->prepare_multicast() built and replace it with
	 * a command packet that enables reception of all multicast
	 * packets.
	 */
	if (*total_flags & FIF_ALLMULTI) {
		kfree(cmd);
		cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, 0, NULL);
	}

	if (cmd != NULL) {
		mwl8k_post_cmd(hw, cmd);
		kfree(cmd);
3123
	}
3124

3125
	mwl8k_fw_unlock(hw);
3126 3127 3128 3129
}

static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
{
3130
	return mwl8k_cmd_set_rts_threshold(hw, MWL8K_CMD_SET, value);
3131 3132
}

3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193
struct mwl8k_sta_notify_item
{
	struct list_head list;
	struct ieee80211_vif *vif;
	enum sta_notify_cmd cmd;
	u8 addr[ETH_ALEN];
};

static void mwl8k_sta_notify_worker(struct work_struct *work)
{
	struct mwl8k_priv *priv =
		container_of(work, struct mwl8k_priv, sta_notify_worker);

	spin_lock_bh(&priv->sta_notify_list_lock);
	while (!list_empty(&priv->sta_notify_list)) {
		struct mwl8k_sta_notify_item *s;
		int action;

		s = list_entry(priv->sta_notify_list.next,
			       struct mwl8k_sta_notify_item, list);
		list_del(&s->list);

		spin_unlock_bh(&priv->sta_notify_list_lock);

		if (s->cmd == STA_NOTIFY_ADD)
			action = MWL8K_STA_DB_MODIFY_ENTRY;
		else
			action = MWL8K_STA_DB_DEL_ENTRY;
		mwl8k_cmd_update_stadb(priv->hw, s->vif, action, s->addr);

		kfree(s);

		spin_lock_bh(&priv->sta_notify_list_lock);
	}
	spin_unlock_bh(&priv->sta_notify_list_lock);
}

static void
mwl8k_sta_notify(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
		 enum sta_notify_cmd cmd, struct ieee80211_sta *sta)
{
	struct mwl8k_priv *priv = hw->priv;
	struct mwl8k_sta_notify_item *s;

	if (cmd != STA_NOTIFY_ADD && cmd != STA_NOTIFY_REMOVE)
		return;

	s = kmalloc(sizeof(*s), GFP_ATOMIC);
	if (s != NULL) {
		s->vif = vif;
		s->cmd = cmd;
		memcpy(s->addr, sta->addr, ETH_ALEN);

		spin_lock(&priv->sta_notify_list_lock);
		list_add_tail(&s->list, &priv->sta_notify_list);
		spin_unlock(&priv->sta_notify_list_lock);

		ieee80211_queue_work(hw, &priv->sta_notify_worker);
	}
}

3194 3195 3196
static int mwl8k_conf_tx(struct ieee80211_hw *hw, u16 queue,
			 const struct ieee80211_tx_queue_params *params)
{
3197
	struct mwl8k_priv *priv = hw->priv;
3198 3199
	int rc;

3200 3201 3202
	rc = mwl8k_fw_lock(hw);
	if (!rc) {
		if (!priv->wmm_enabled)
3203
			rc = mwl8k_cmd_set_wmm_mode(hw, 1);
3204

3205
		if (!rc)
3206 3207 3208 3209 3210
			rc = mwl8k_cmd_set_edca_params(hw, queue,
						       params->cw_min,
						       params->cw_max,
						       params->aifs,
						       params->txop);
3211 3212

		mwl8k_fw_unlock(hw);
3213
	}
3214

3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227
	return rc;
}

static int mwl8k_get_tx_stats(struct ieee80211_hw *hw,
			      struct ieee80211_tx_queue_stats *stats)
{
	struct mwl8k_priv *priv = hw->priv;
	struct mwl8k_tx_queue *txq;
	int index;

	spin_lock_bh(&priv->tx_lock);
	for (index = 0; index < MWL8K_TX_QUEUES; index++) {
		txq = priv->txq + index;
3228
		memcpy(&stats[index], &txq->stats,
3229 3230 3231 3232
			sizeof(struct ieee80211_tx_queue_stats));
	}
	spin_unlock_bh(&priv->tx_lock);

3233
	return 0;
3234 3235 3236 3237 3238
}

static int mwl8k_get_stats(struct ieee80211_hw *hw,
			   struct ieee80211_low_level_stats *stats)
{
3239
	return mwl8k_cmd_get_stat(hw, stats);
3240 3241 3242 3243 3244 3245 3246 3247 3248 3249
}

static const struct ieee80211_ops mwl8k_ops = {
	.tx			= mwl8k_tx,
	.start			= mwl8k_start,
	.stop			= mwl8k_stop,
	.add_interface		= mwl8k_add_interface,
	.remove_interface	= mwl8k_remove_interface,
	.config			= mwl8k_config,
	.bss_info_changed	= mwl8k_bss_info_changed,
3250
	.prepare_multicast	= mwl8k_prepare_multicast,
3251 3252
	.configure_filter	= mwl8k_configure_filter,
	.set_rts_threshold	= mwl8k_set_rts_threshold,
3253
	.sta_notify		= mwl8k_sta_notify,
3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268
	.conf_tx		= mwl8k_conf_tx,
	.get_tx_stats		= mwl8k_get_tx_stats,
	.get_stats		= mwl8k_get_stats,
};

static void mwl8k_tx_reclaim_handler(unsigned long data)
{
	int i;
	struct ieee80211_hw *hw = (struct ieee80211_hw *) data;
	struct mwl8k_priv *priv = hw->priv;

	spin_lock_bh(&priv->tx_lock);
	for (i = 0; i < MWL8K_TX_QUEUES; i++)
		mwl8k_txq_reclaim(hw, i, 0);

3269
	if (priv->tx_wait != NULL && !priv->pending_tx_pkts) {
3270 3271
		complete(priv->tx_wait);
		priv->tx_wait = NULL;
3272 3273 3274 3275 3276 3277 3278 3279 3280 3281
	}
	spin_unlock_bh(&priv->tx_lock);
}

static void mwl8k_finalize_join_worker(struct work_struct *work)
{
	struct mwl8k_priv *priv =
		container_of(work, struct mwl8k_priv, finalize_join_worker);
	struct sk_buff *skb = priv->beacon_skb;

3282 3283
	mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len,
				priv->vif->bss_conf.dtim_period);
3284 3285 3286 3287 3288
	dev_kfree_skb(skb);

	priv->beacon_skb = NULL;
}

3289 3290 3291
enum {
	MWL8687 = 0,
	MWL8366,
3292 3293
};

3294
static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = {
3295
	[MWL8687] = {
3296 3297 3298 3299
		.part_name	= "88w8687",
		.helper_image	= "mwl8k/helper_8687.fw",
		.fw_image	= "mwl8k/fmimage_8687.fw",
	},
3300
	[MWL8366] = {
3301 3302 3303
		.part_name	= "88w8366",
		.helper_image	= "mwl8k/helper_8366.fw",
		.fw_image	= "mwl8k/fmimage_8366.fw",
3304
		.ap_rxd_ops	= &rxd_8366_ap_ops,
3305
	},
3306 3307 3308
};

static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
3309 3310 3311 3312
	{ PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
	{ PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
	{ PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
	{ },
3313 3314 3315
};
MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);

3316 3317 3318
static int __devinit mwl8k_probe(struct pci_dev *pdev,
				 const struct pci_device_id *id)
{
3319
	static int printed_version = 0;
3320 3321 3322 3323
	struct ieee80211_hw *hw;
	struct mwl8k_priv *priv;
	int rc;
	int i;
3324 3325 3326 3327 3328

	if (!printed_version) {
		printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
		printed_version = 1;
	}
3329

3330

3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341
	rc = pci_enable_device(pdev);
	if (rc) {
		printk(KERN_ERR "%s: Cannot enable new PCI device\n",
		       MWL8K_NAME);
		return rc;
	}

	rc = pci_request_regions(pdev, MWL8K_NAME);
	if (rc) {
		printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
		       MWL8K_NAME);
3342
		goto err_disable_device;
3343 3344 3345 3346
	}

	pci_set_master(pdev);

3347

3348 3349 3350 3351 3352 3353 3354
	hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
	if (hw == NULL) {
		printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
		rc = -ENOMEM;
		goto err_free_reg;
	}

3355 3356 3357
	SET_IEEE80211_DEV(hw, &pdev->dev);
	pci_set_drvdata(pdev, hw);

3358 3359 3360
	priv = hw->priv;
	priv->hw = hw;
	priv->pdev = pdev;
3361
	priv->device_info = &mwl8k_info_tbl[id->driver_data];
3362 3363


L
Lennert Buytenhek 已提交
3364 3365 3366
	priv->sram = pci_iomap(pdev, 0, 0x10000);
	if (priv->sram == NULL) {
		printk(KERN_ERR "%s: Cannot map device SRAM\n",
L
Lennert Buytenhek 已提交
3367
		       wiphy_name(hw->wiphy));
3368 3369 3370
		goto err_iounmap;
	}

L
Lennert Buytenhek 已提交
3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384
	/*
	 * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
	 * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
	 */
	priv->regs = pci_iomap(pdev, 1, 0x10000);
	if (priv->regs == NULL) {
		priv->regs = pci_iomap(pdev, 2, 0x10000);
		if (priv->regs == NULL) {
			printk(KERN_ERR "%s: Cannot map device registers\n",
			       wiphy_name(hw->wiphy));
			goto err_iounmap;
		}
	}

3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408

	/* Reset firmware and hardware */
	mwl8k_hw_reset(priv);

	/* Ask userland hotplug daemon for the device firmware */
	rc = mwl8k_request_firmware(priv);
	if (rc) {
		printk(KERN_ERR "%s: Firmware files not found\n",
		       wiphy_name(hw->wiphy));
		goto err_stop_firmware;
	}

	/* Load firmware into hardware */
	rc = mwl8k_load_firmware(hw);
	if (rc) {
		printk(KERN_ERR "%s: Cannot start firmware\n",
		       wiphy_name(hw->wiphy));
		goto err_stop_firmware;
	}

	/* Reclaim memory once firmware is successfully loaded */
	mwl8k_release_firmware(priv);


3409
	if (priv->ap_fw) {
3410
		priv->rxd_ops = priv->device_info->ap_rxd_ops;
3411 3412 3413 3414 3415 3416 3417
		if (priv->rxd_ops == NULL) {
			printk(KERN_ERR "%s: Driver does not have AP "
			       "firmware image support for this hardware\n",
			       wiphy_name(hw->wiphy));
			goto err_stop_firmware;
		}
	} else {
3418
		priv->rxd_ops = &rxd_sta_ops;
3419
	}
3420 3421 3422 3423 3424 3425

	priv->sniffer_enabled = false;
	priv->wmm_enabled = false;
	priv->pending_tx_pkts = 0;


3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448
	memcpy(priv->channels, mwl8k_channels, sizeof(mwl8k_channels));
	priv->band.band = IEEE80211_BAND_2GHZ;
	priv->band.channels = priv->channels;
	priv->band.n_channels = ARRAY_SIZE(mwl8k_channels);
	priv->band.bitrates = priv->rates;
	priv->band.n_bitrates = ARRAY_SIZE(mwl8k_rates);
	hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;

	BUILD_BUG_ON(sizeof(priv->rates) != sizeof(mwl8k_rates));
	memcpy(priv->rates, mwl8k_rates, sizeof(mwl8k_rates));

	/*
	 * Extra headroom is the size of the required DMA header
	 * minus the size of the smallest 802.11 frame (CTS frame).
	 */
	hw->extra_tx_headroom =
		sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);

	hw->channel_change_time = 10;

	hw->queues = MWL8K_TX_QUEUES;

	/* Set rssi and noise values to dBm */
3449
	hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_NOISE_DBM;
3450 3451 3452 3453
	hw->vif_data_size = sizeof(struct mwl8k_vif);
	priv->vif = NULL;

	/* Set default radio state and preamble */
3454
	priv->radio_on = 0;
3455
	priv->radio_short_preamble = 0;
3456

3457 3458 3459 3460 3461
	/* Station database handling */
	INIT_WORK(&priv->sta_notify_worker, mwl8k_sta_notify_worker);
	spin_lock_init(&priv->sta_notify_list_lock);
	INIT_LIST_HEAD(&priv->sta_notify_list);

3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472
	/* Finalize join worker */
	INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);

	/* TX reclaim tasklet */
	tasklet_init(&priv->tx_reclaim_task,
			mwl8k_tx_reclaim_handler, (unsigned long)hw);
	tasklet_disable(&priv->tx_reclaim_task);

	/* Power management cookie */
	priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
	if (priv->cookie == NULL)
3473
		goto err_stop_firmware;
3474 3475 3476

	rc = mwl8k_rxq_init(hw, 0);
	if (rc)
3477
		goto err_free_cookie;
3478 3479
	rxq_refill(hw, 0, INT_MAX);

3480 3481 3482 3483 3484
	mutex_init(&priv->fw_mutex);
	priv->fw_mutex_owner = NULL;
	priv->fw_mutex_depth = 0;
	priv->hostcmd_wait = NULL;

3485 3486
	spin_lock_init(&priv->tx_lock);

3487 3488
	priv->tx_wait = NULL;

3489 3490 3491 3492 3493 3494 3495
	for (i = 0; i < MWL8K_TX_QUEUES; i++) {
		rc = mwl8k_txq_init(hw, i);
		if (rc)
			goto err_free_queues;
	}

	iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3496
	iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3497 3498 3499
	iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
	iowrite32(0xffffffff, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);

3500
	rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
3501 3502 3503
			 IRQF_SHARED, MWL8K_NAME, hw);
	if (rc) {
		printk(KERN_ERR "%s: failed to register IRQ handler\n",
L
Lennert Buytenhek 已提交
3504
		       wiphy_name(hw->wiphy));
3505 3506 3507 3508 3509 3510 3511 3512
		goto err_free_queues;
	}

	/*
	 * Temporarily enable interrupts.  Initial firmware host
	 * commands use interrupts and avoids polling.  Disable
	 * interrupts when done.
	 */
3513
	iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3514 3515

	/* Get config data, mac addrs etc */
3516 3517 3518 3519 3520 3521
	if (priv->ap_fw) {
		rc = mwl8k_cmd_get_hw_spec_ap(hw);
		if (!rc)
			rc = mwl8k_cmd_set_hw_spec(hw);
	} else {
		rc = mwl8k_cmd_get_hw_spec_sta(hw);
3522 3523

		hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
3524
	}
3525
	if (rc) {
L
Lennert Buytenhek 已提交
3526 3527
		printk(KERN_ERR "%s: Cannot initialise firmware\n",
		       wiphy_name(hw->wiphy));
3528
		goto err_free_irq;
3529 3530 3531
	}

	/* Turn radio off */
3532
	rc = mwl8k_cmd_radio_disable(hw);
3533
	if (rc) {
L
Lennert Buytenhek 已提交
3534
		printk(KERN_ERR "%s: Cannot disable\n", wiphy_name(hw->wiphy));
3535
		goto err_free_irq;
3536 3537
	}

3538
	/* Clear MAC address */
3539
	rc = mwl8k_cmd_set_mac_addr(hw, "\x00\x00\x00\x00\x00\x00");
3540 3541 3542
	if (rc) {
		printk(KERN_ERR "%s: Cannot clear MAC address\n",
		       wiphy_name(hw->wiphy));
3543
		goto err_free_irq;
3544 3545
	}

3546 3547 3548 3549 3550 3551
	/* Disable interrupts */
	iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
	free_irq(priv->pdev->irq, hw);

	rc = ieee80211_register_hw(hw);
	if (rc) {
L
Lennert Buytenhek 已提交
3552 3553
		printk(KERN_ERR "%s: Cannot register device\n",
		       wiphy_name(hw->wiphy));
3554
		goto err_free_queues;
3555 3556
	}

3557
	printk(KERN_INFO "%s: %s v%d, %pM, %s firmware %u.%u.%u.%u\n",
3558
	       wiphy_name(hw->wiphy), priv->device_info->part_name,
3559
	       priv->hw_rev, hw->wiphy->perm_addr,
3560
	       priv->ap_fw ? "AP" : "STA",
3561 3562
	       (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
	       (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574

	return 0;

err_free_irq:
	iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
	free_irq(priv->pdev->irq, hw);

err_free_queues:
	for (i = 0; i < MWL8K_TX_QUEUES; i++)
		mwl8k_txq_deinit(hw, i);
	mwl8k_rxq_deinit(hw, 0);

3575
err_free_cookie:
3576 3577 3578 3579
	if (priv->cookie != NULL)
		pci_free_consistent(priv->pdev, 4,
				priv->cookie, priv->cookie_dma);

3580 3581 3582 3583 3584
err_stop_firmware:
	mwl8k_hw_reset(priv);
	mwl8k_release_firmware(priv);

err_iounmap:
3585 3586 3587
	if (priv->regs != NULL)
		pci_iounmap(pdev, priv->regs);

L
Lennert Buytenhek 已提交
3588 3589 3590
	if (priv->sram != NULL)
		pci_iounmap(pdev, priv->sram);

3591 3592 3593 3594 3595
	pci_set_drvdata(pdev, NULL);
	ieee80211_free_hw(hw);

err_free_reg:
	pci_release_regions(pdev);
3596 3597

err_disable_device:
3598 3599 3600 3601 3602
	pci_disable_device(pdev);

	return rc;
}

3603
static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
3604 3605 3606 3607
{
	printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
}

3608
static void __devexit mwl8k_remove(struct pci_dev *pdev)
3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619
{
	struct ieee80211_hw *hw = pci_get_drvdata(pdev);
	struct mwl8k_priv *priv;
	int i;

	if (hw == NULL)
		return;
	priv = hw->priv;

	ieee80211_stop_queues(hw);

3620 3621
	ieee80211_unregister_hw(hw);

3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636
	/* Remove tx reclaim tasklet */
	tasklet_kill(&priv->tx_reclaim_task);

	/* Stop hardware */
	mwl8k_hw_reset(priv);

	/* Return all skbs to mac80211 */
	for (i = 0; i < MWL8K_TX_QUEUES; i++)
		mwl8k_txq_reclaim(hw, i, 1);

	for (i = 0; i < MWL8K_TX_QUEUES; i++)
		mwl8k_txq_deinit(hw, i);

	mwl8k_rxq_deinit(hw, 0);

L
Lennert Buytenhek 已提交
3637
	pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
3638 3639

	pci_iounmap(pdev, priv->regs);
L
Lennert Buytenhek 已提交
3640
	pci_iounmap(pdev, priv->sram);
3641 3642 3643 3644 3645 3646 3647 3648
	pci_set_drvdata(pdev, NULL);
	ieee80211_free_hw(hw);
	pci_release_regions(pdev);
	pci_disable_device(pdev);
}

static struct pci_driver mwl8k_driver = {
	.name		= MWL8K_NAME,
3649
	.id_table	= mwl8k_pci_id_table,
3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666
	.probe		= mwl8k_probe,
	.remove		= __devexit_p(mwl8k_remove),
	.shutdown	= __devexit_p(mwl8k_shutdown),
};

static int __init mwl8k_init(void)
{
	return pci_register_driver(&mwl8k_driver);
}

static void __exit mwl8k_exit(void)
{
	pci_unregister_driver(&mwl8k_driver);
}

module_init(mwl8k_init);
module_exit(mwl8k_exit);
L
Lennert Buytenhek 已提交
3667 3668 3669 3670 3671

MODULE_DESCRIPTION(MWL8K_DESC);
MODULE_VERSION(MWL8K_VERSION);
MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
MODULE_LICENSE("GPL");