mwl8k.c 87.7 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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	/* Non AMPDU sequence number assigned by driver */
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	u16 seqno;
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};
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#define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
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struct mwl8k_sta {
	/* Index into station database. Returned by UPDATE_STADB.  */
	u8 peer_id;
};
#define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->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, },
};

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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 {
581 582 583 584 585 586 587 588
		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;
589
			break;
590 591 592
		}

		cond_resched();
593 594 595 596 597 598 599 600 601 602 603
		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;
604
	char data[0];
605 606 607
} __attribute__((packed));

/* Routines to add/remove DMA header from skb.  */
608
static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
609
{
610 611 612 613 614 615 616 617 618 619 620 621 622
	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);
		}
623
	}
624 625 626

	if (hdrlen != sizeof(*tr))
		skb_pull(skb, sizeof(*tr) - hdrlen);
627 628
}

629
static inline void mwl8k_add_dma_header(struct sk_buff *skb)
630 631
{
	struct ieee80211_hdr *wh;
632
	int hdrlen;
633 634
	struct mwl8k_dma_data *tr;

635 636 637 638 639 640
	/*
	 * 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).
	 */
641
	wh = (struct ieee80211_hdr *)skb->data;
642

643
	hdrlen = ieee80211_hdrlen(wh->frame_control);
644 645
	if (hdrlen != sizeof(*tr))
		skb_push(skb, sizeof(*tr) - hdrlen);
646

647 648
	if (ieee80211_is_data_qos(wh->frame_control))
		hdrlen -= 2;
649 650 651 652

	tr = (struct mwl8k_dma_data *)skb->data;
	if (wh != &tr->wh)
		memmove(&tr->wh, wh, hdrlen);
653 654
	if (hdrlen != sizeof(tr->wh))
		memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
655 656 657 658 659 660

	/*
	 * 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.
	 */
661
	tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr));
662 663 664 665
}


/*
666
 * Packet reception for 88w8366 AP firmware.
667
 */
668
struct mwl8k_rxd_8366_ap {
669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685
	__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));

686 687 688
#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)
689

690
#define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST	0x80
691

692
static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
693
{
694
	struct mwl8k_rxd_8366_ap *rxd = _rxd;
695 696

	rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
697
	rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
698 699
}

700
static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
701
{
702
	struct mwl8k_rxd_8366_ap *rxd = _rxd;
703 704 705 706 707 708 709 710

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

static int
711 712
mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
			  __le16 *qos)
713
{
714
	struct mwl8k_rxd_8366_ap *rxd = _rxd;
715

716
	if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
717 718 719 720 721 722 723 724
		return -1;
	rmb();

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

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

725
	if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
726
		status->flag |= RX_FLAG_HT;
727
		if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
728
			status->flag |= RX_FLAG_40MHZ;
729
		status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
730 731 732 733 734 735 736 737 738 739 740 741 742 743
	} 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);

744 745
	*qos = rxd->qos_control;

746 747 748
	return le16_to_cpu(rxd->pkt_len);
}

749 750 751 752 753
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,
754 755 756
};

/*
757
 * Packet reception for STA firmware.
758
 */
759
struct mwl8k_rxd_sta {
760 761 762 763
	__le16 pkt_len;
	__u8 link_quality;
	__u8 noise_level;
	__le32 pkt_phys_addr;
764
	__le32 next_rxd_phys_addr;
765 766 767 768 769 770 771 772 773 774 775
	__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));

776 777 778 779 780 781
#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
782

783
#define MWL8K_STA_RX_CTRL_OWNED_BY_HOST		0x02
784

785
static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
786
{
787
	struct mwl8k_rxd_sta *rxd = _rxd;
788 789

	rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
790
	rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
791 792
}

793
static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
794
{
795
	struct mwl8k_rxd_sta *rxd = _rxd;
796 797 798 799 800 801 802 803

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

static int
804
mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
805
		       __le16 *qos)
806
{
807
	struct mwl8k_rxd_sta *rxd = _rxd;
808 809
	u16 rate_info;

810
	if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
811 812 813 814 815 816 817 818 819
		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;
820 821
	status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
	status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
822

823
	if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
824
		status->flag |= RX_FLAG_SHORTPRE;
825
	if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
826
		status->flag |= RX_FLAG_40MHZ;
827
	if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
828
		status->flag |= RX_FLAG_SHORT_GI;
829
	if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
830 831 832 833 834
		status->flag |= RX_FLAG_HT;

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

835 836
	*qos = rxd->qos_control;

837 838 839
	return le16_to_cpu(rxd->pkt_len);
}

840 841 842 843 844
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,
845 846 847
};


848 849 850 851 852 853 854 855 856 857
#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;

858 859 860
	rxq->rxd_count = 0;
	rxq->head = 0;
	rxq->tail = 0;
861

862
	size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
863

864 865
	rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
	if (rxq->rxd == NULL) {
866
		printk(KERN_ERR "%s: failed to alloc RX descriptors\n",
L
Lennert Buytenhek 已提交
867
		       wiphy_name(hw->wiphy));
868 869
		return -ENOMEM;
	}
870
	memset(rxq->rxd, 0, size);
871

872 873
	rxq->buf = kmalloc(MWL8K_RX_DESCS * sizeof(*rxq->buf), GFP_KERNEL);
	if (rxq->buf == NULL) {
874
		printk(KERN_ERR "%s: failed to alloc RX skbuff list\n",
L
Lennert Buytenhek 已提交
875
		       wiphy_name(hw->wiphy));
876
		pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
877 878
		return -ENOMEM;
	}
879
	memset(rxq->buf, 0, MWL8K_RX_DESCS * sizeof(*rxq->buf));
880 881

	for (i = 0; i < MWL8K_RX_DESCS; i++) {
882 883
		int desc_size;
		void *rxd;
884
		int nexti;
885 886 887 888
		dma_addr_t next_dma_addr;

		desc_size = priv->rxd_ops->rxd_size;
		rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
889

890 891 892 893
		nexti = i + 1;
		if (nexti == MWL8K_RX_DESCS)
			nexti = 0;
		next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
894

895
		priv->rxd_ops->rxd_init(rxd, next_dma_addr);
896 897 898 899 900 901 902 903 904 905 906 907
	}

	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;
908
	while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
909
		struct sk_buff *skb;
910
		dma_addr_t addr;
911
		int rx;
912
		void *rxd;
913 914 915 916 917

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

918 919
		addr = pci_map_single(priv->pdev, skb->data,
				      MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
920

921 922 923 924
		rxq->rxd_count++;
		rx = rxq->tail++;
		if (rxq->tail == MWL8K_RX_DESCS)
			rxq->tail = 0;
925 926
		rxq->buf[rx].skb = skb;
		pci_unmap_addr_set(&rxq->buf[rx], dma, addr);
927 928 929

		rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
		priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
930 931 932 933 934 935 936 937 938 939 940 941 942 943 944

		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++) {
945 946 947 948 949 950 951 952
		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;
953 954 955
		}
	}

956 957
	kfree(rxq->buf);
	rxq->buf = NULL;
958 959

	pci_free_consistent(priv->pdev,
960
			    MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
961 962
			    rxq->rxd, rxq->rxd_dma);
	rxq->rxd = NULL;
963 964 965 966 967 968 969 970 971 972 973 974 975 976 977
}


/*
 * 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);
}

978 979
static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
				     struct sk_buff *skb)
980
{
981 982
	struct mwl8k_priv *priv = hw->priv;

983
	priv->capture_beacon = false;
984
	memset(priv->capture_bssid, 0, ETH_ALEN);
985 986 987 988 989 990 991 992

	/*
	 * 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)
993
		ieee80211_queue_work(hw, &priv->finalize_join_worker);
994 995 996 997 998 999 1000 1001 1002
}

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;
1003
	while (rxq->rxd_count && limit--) {
1004
		struct sk_buff *skb;
1005 1006
		void *rxd;
		int pkt_len;
1007
		struct ieee80211_rx_status status;
1008
		__le16 qos;
1009

1010
		skb = rxq->buf[rxq->head].skb;
1011 1012
		if (skb == NULL)
			break;
1013 1014 1015

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

1016
		pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos);
1017 1018 1019
		if (pkt_len < 0)
			break;

1020 1021 1022 1023 1024 1025
		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);
1026

1027 1028 1029 1030
		rxq->head++;
		if (rxq->head == MWL8K_RX_DESCS)
			rxq->head = 0;

1031
		rxq->rxd_count--;
1032

1033
		skb_put(skb, pkt_len);
1034
		mwl8k_remove_dma_header(skb, qos);
1035 1036

		/*
L
Lennert Buytenhek 已提交
1037 1038 1039
		 * 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.
1040
		 */
1041
		if (mwl8k_capture_bssid(priv, (void *)skb->data))
1042
			mwl8k_save_beacon(hw, skb);
1043

1044 1045
		memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
		ieee80211_rx_irqsafe(hw, skb);
1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063

		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

1064 1065 1066 1067 1068 1069
#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

1070 1071 1072 1073 1074 1075 1076
struct mwl8k_tx_desc {
	__le32 status;
	__u8 data_rate;
	__u8 tx_priority;
	__le16 qos_control;
	__le32 pkt_phys_addr;
	__le16 pkt_len;
1077
	__u8 dest_MAC_addr[ETH_ALEN];
1078
	__le32 next_txd_phys_addr;
1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093
	__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;

1094 1095 1096 1097
	memset(&txq->stats, 0, sizeof(struct ieee80211_tx_queue_stats));
	txq->stats.limit = MWL8K_TX_DESCS;
	txq->head = 0;
	txq->tail = 0;
1098 1099 1100

	size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);

1101 1102
	txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
	if (txq->txd == NULL) {
1103
		printk(KERN_ERR "%s: failed to alloc TX descriptors\n",
L
Lennert Buytenhek 已提交
1104
		       wiphy_name(hw->wiphy));
1105 1106
		return -ENOMEM;
	}
1107
	memset(txq->txd, 0, size);
1108

1109 1110
	txq->skb = kmalloc(MWL8K_TX_DESCS * sizeof(*txq->skb), GFP_KERNEL);
	if (txq->skb == NULL) {
1111
		printk(KERN_ERR "%s: failed to alloc TX skbuff list\n",
L
Lennert Buytenhek 已提交
1112
		       wiphy_name(hw->wiphy));
1113
		pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1114 1115
		return -ENOMEM;
	}
1116
	memset(txq->skb, 0, MWL8K_TX_DESCS * sizeof(*txq->skb));
1117 1118 1119 1120 1121

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

1122
		tx_desc = txq->txd + i;
1123 1124 1125
		nexti = (i + 1) % MWL8K_TX_DESCS;

		tx_desc->status = 0;
1126 1127
		tx_desc->next_txd_phys_addr =
			cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141
	}

	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);
}

1142
static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1143
{
1144 1145 1146 1147 1148 1149 1150 1151 1152 1153
	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;

1154
		for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1155 1156
			struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
			u32 status;
1157

1158
			status = le32_to_cpu(tx_desc->status);
1159
			if (status & MWL8K_TXD_STATUS_FW_OWNED)
1160
				fw_owned++;
1161
			else
1162
				drv_owned++;
1163 1164

			if (tx_desc->pkt_len == 0)
1165
				unused++;
1166 1167
		}

1168 1169 1170 1171 1172 1173
		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);
	}
1174 1175
}

1176
/*
1177
 * Must be called with priv->fw_mutex held and tx queues stopped.
1178
 */
1179 1180
#define MWL8K_TX_WAIT_TIMEOUT_MS	1000

1181
static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1182 1183
{
	struct mwl8k_priv *priv = hw->priv;
1184
	DECLARE_COMPLETION_ONSTACK(tx_wait);
1185 1186
	int retry;
	int rc;
1187 1188 1189

	might_sleep();

1190 1191 1192 1193 1194 1195 1196 1197 1198 1199
	/*
	 * 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;

1200
	spin_lock_bh(&priv->tx_lock);
1201 1202 1203 1204
	priv->tx_wait = &tx_wait;
	while (!rc) {
		int oldcount;
		unsigned long timeout;
1205

1206
		oldcount = priv->pending_tx_pkts;
1207

1208
		spin_unlock_bh(&priv->tx_lock);
1209
		timeout = wait_for_completion_timeout(&tx_wait,
1210
			    msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1211
		spin_lock_bh(&priv->tx_lock);
1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222

		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) {
1223 1224
			printk(KERN_NOTICE "%s: waiting for tx rings "
			       "to drain (%d -> %d pkts)\n",
1225 1226 1227 1228 1229 1230
			       wiphy_name(hw->wiphy), oldcount,
			       priv->pending_tx_pkts);
			retry = 1;
			continue;
		}

1231 1232
		priv->tx_wait = NULL;

1233 1234 1235 1236 1237
		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;
1238
	}
1239
	spin_unlock_bh(&priv->tx_lock);
1240

1241
	return rc;
1242 1243
}

1244 1245 1246 1247
#define MWL8K_TXD_SUCCESS(status)				\
	((status) & (MWL8K_TXD_STATUS_OK |			\
		     MWL8K_TXD_STATUS_OK_RETRY |		\
		     MWL8K_TXD_STATUS_OK_MORE_RETRY))
1248 1249 1250 1251 1252 1253 1254

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;

1255
	while (txq->stats.len > 0) {
1256 1257 1258
		int tx;
		struct mwl8k_tx_desc *tx_desc;
		unsigned long addr;
1259
		int size;
1260 1261 1262 1263
		struct sk_buff *skb;
		struct ieee80211_tx_info *info;
		u32 status;

1264 1265
		tx = txq->head;
		tx_desc = txq->txd + tx;
1266 1267 1268 1269 1270 1271 1272 1273 1274 1275

		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);
		}

1276 1277 1278
		txq->head = (tx + 1) % MWL8K_TX_DESCS;
		BUG_ON(txq->stats.len == 0);
		txq->stats.len--;
1279 1280 1281
		priv->pending_tx_pkts--;

		addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1282
		size = le16_to_cpu(tx_desc->pkt_len);
1283 1284
		skb = txq->skb[tx];
		txq->skb[tx] = NULL;
1285 1286 1287 1288

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

1289
		mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1290 1291 1292 1293 1294 1295 1296

		/* 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);
1297
		if (MWL8K_TXD_SUCCESS(status))
1298 1299 1300 1301
			info->flags |= IEEE80211_TX_STAT_ACK;

		ieee80211_tx_status_irqsafe(hw, skb);

1302
		wake = 1;
1303 1304
	}

1305
	if (wake && priv->radio_on && !mutex_is_locked(&priv->fw_mutex))
1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316
		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);

1317 1318
	kfree(txq->skb);
	txq->skb = NULL;
1319 1320 1321

	pci_free_consistent(priv->pdev,
			    MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1322 1323
			    txq->txd, txq->txd_dma);
	txq->txd = NULL;
1324 1325 1326 1327 1328 1329 1330
}

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;
1331
	struct mwl8k_vif *mwl8k_vif;
1332 1333 1334 1335
	struct ieee80211_hdr *wh;
	struct mwl8k_tx_queue *txq;
	struct mwl8k_tx_desc *tx;
	dma_addr_t dma;
1336 1337 1338
	u32 txstatus;
	u8 txdatarate;
	u16 qos;
1339

1340 1341 1342 1343 1344
	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;
1345

1346
	mwl8k_add_dma_header(skb);
1347
	wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1348 1349 1350 1351 1352 1353

	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;
1354

1355 1356 1357 1358 1359
		wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
		wh->seq_ctrl |= cpu_to_le16(seqno << 4);
		mwl8k_vif->seqno = seqno++ % 4096;
	}

1360 1361 1362 1363 1364 1365
	/* 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;
1366
		qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1367 1368 1369 1370 1371
	} else if (ieee80211_is_data(wh->frame_control)) {
		txdatarate = 1;
		if (is_multicast_ether_addr(wh->addr1))
			txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;

1372
		qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1373
		if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1374
			qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1375
		else
1376
			qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1377
	}
1378 1379 1380 1381 1382 1383

	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
1384
		       "dropping TX frame.\n", wiphy_name(hw->wiphy));
1385
		dev_kfree_skb(skb);
1386 1387 1388
		return NETDEV_TX_OK;
	}

1389
	spin_lock_bh(&priv->tx_lock);
1390

1391
	txq = priv->txq + index;
1392

1393 1394
	BUG_ON(txq->skb[txq->tail] != NULL);
	txq->skb[txq->tail] = skb;
1395

1396
	tx = txq->txd + txq->tail;
1397 1398
	tx->data_rate = txdatarate;
	tx->tx_priority = index;
1399 1400 1401
	tx->qos_control = cpu_to_le16(qos);
	tx->pkt_phys_addr = cpu_to_le32(dma);
	tx->pkt_len = cpu_to_le16(skb->len);
1402
	tx->rate_info = 0;
1403 1404 1405 1406
	if (!priv->ap_fw && tx_info->control.sta != NULL)
		tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id;
	else
		tx->peer_id = 0;
1407
	wmb();
1408 1409
	tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);

1410 1411
	txq->stats.count++;
	txq->stats.len++;
1412 1413
	priv->pending_tx_pkts++;

1414 1415 1416
	txq->tail++;
	if (txq->tail == MWL8K_TX_DESCS)
		txq->tail = 0;
1417

1418
	if (txq->head == txq->tail)
1419 1420
		ieee80211_stop_queue(hw, index);

1421
	mwl8k_tx_start(priv);
1422 1423 1424 1425 1426 1427 1428

	spin_unlock_bh(&priv->tx_lock);

	return NETDEV_TX_OK;
}


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 1482
/*
 * 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);
	}
}


1483 1484 1485 1486
/*
 * Command processing.
 */

1487 1488
/* Timeout firmware commands after 10s */
#define MWL8K_CMD_TIMEOUT_MS	10000
1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500

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
1501
	cmd->result = 0xffff;
1502 1503 1504 1505 1506 1507
	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;

1508
	rc = mwl8k_fw_lock(hw);
1509 1510 1511
	if (rc) {
		pci_unmap_single(priv->pdev, dma_addr, dma_size,
						PCI_DMA_BIDIRECTIONAL);
1512
		return rc;
1513
	}
1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524

	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));

1525 1526 1527 1528
	priv->hostcmd_wait = NULL;

	mwl8k_fw_unlock(hw);

1529 1530 1531
	pci_unmap_single(priv->pdev, dma_addr, dma_size,
					PCI_DMA_BIDIRECTIONAL);

1532 1533
	if (!timeout) {
		printk(KERN_ERR "%s: Command %s timeout after %u ms\n",
L
Lennert Buytenhek 已提交
1534
		       wiphy_name(hw->wiphy),
1535 1536 1537 1538
		       mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
		       MWL8K_CMD_TIMEOUT_MS);
		rc = -ETIMEDOUT;
	} else {
1539 1540 1541 1542
		int ms;

		ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);

1543
		rc = cmd->result ? -EINVAL : 0;
1544 1545
		if (rc)
			printk(KERN_ERR "%s: Command %s error 0x%x\n",
L
Lennert Buytenhek 已提交
1546
			       wiphy_name(hw->wiphy),
1547
			       mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1548
			       le16_to_cpu(cmd->result));
1549 1550 1551 1552 1553
		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);
1554 1555 1556 1557 1558 1559
	}

	return rc;
}

/*
1560
 * CMD_GET_HW_SPEC (STA version).
1561
 */
1562
struct mwl8k_cmd_get_hw_spec_sta {
1563 1564 1565 1566
	struct mwl8k_cmd_pkt header;
	__u8 hw_rev;
	__u8 host_interface;
	__le16 num_mcaddrs;
1567
	__u8 perm_addr[ETH_ALEN];
1568 1569 1570 1571 1572 1573 1574 1575 1576 1577
	__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;
1578
	__le32 total_rxd;
1579 1580
} __attribute__((packed));

1581
static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
1582 1583
{
	struct mwl8k_priv *priv = hw->priv;
1584
	struct mwl8k_cmd_get_hw_spec_sta *cmd;
1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596
	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);
1597
	cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
1598
	cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES);
1599
	for (i = 0; i < MWL8K_TX_QUEUES; i++)
1600
		cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
1601
	cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
1602
	cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
1603 1604 1605 1606 1607 1608

	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);
1609
		priv->fw_rev = le32_to_cpu(cmd->fw_rev);
1610 1611 1612 1613 1614 1615 1616
		priv->hw_rev = cmd->hw_rev;
	}

	kfree(cmd);
	return rc;
}

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 1739
/*
 * 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;
}

1740 1741 1742 1743 1744 1745 1746
/*
 * CMD_MAC_MULTICAST_ADR.
 */
struct mwl8k_cmd_mac_multicast_adr {
	struct mwl8k_cmd_pkt header;
	__le16 action;
	__le16 numaddr;
1747
	__u8 addr[0][ETH_ALEN];
1748 1749
};

1750 1751 1752 1753
#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
1754

1755
static struct mwl8k_cmd_pkt *
L
Lennert Buytenhek 已提交
1756
__mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
1757
			      int mc_count, struct dev_addr_list *mclist)
1758
{
1759
	struct mwl8k_priv *priv = hw->priv;
1760
	struct mwl8k_cmd_mac_multicast_adr *cmd;
1761 1762
	int size;

L
Lennert Buytenhek 已提交
1763
	if (allmulti || mc_count > priv->num_mcaddrs) {
1764 1765 1766
		allmulti = 1;
		mc_count = 0;
	}
1767 1768

	size = sizeof(*cmd) + mc_count * ETH_ALEN;
1769

1770
	cmd = kzalloc(size, GFP_ATOMIC);
1771
	if (cmd == NULL)
1772
		return NULL;
1773 1774 1775

	cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
	cmd->header.length = cpu_to_le16(size);
1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792
	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;
1793 1794 1795
		}
	}

1796
	return &cmd->header;
1797 1798 1799
}

/*
1800
 * CMD_GET_STAT.
1801
 */
1802
struct mwl8k_cmd_get_stat {
1803 1804 1805 1806 1807 1808 1809 1810 1811
	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

1812 1813
static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
			      struct ieee80211_low_level_stats *stats)
1814
{
1815
	struct mwl8k_cmd_get_stat *cmd;
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 1841
	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;
}

/*
1842
 * CMD_RADIO_CONTROL.
1843
 */
1844
struct mwl8k_cmd_radio_control {
1845 1846 1847 1848 1849 1850
	struct mwl8k_cmd_pkt header;
	__le16 action;
	__le16 control;
	__le16 radio_on;
} __attribute__((packed));

1851
static int
1852
mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
1853 1854
{
	struct mwl8k_priv *priv = hw->priv;
1855
	struct mwl8k_cmd_radio_control *cmd;
1856 1857
	int rc;

1858
	if (enable == priv->radio_on && !force)
1859 1860 1861 1862 1863 1864 1865 1866 1867
		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);
1868
	cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
1869 1870 1871 1872 1873 1874
	cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);

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

	if (!rc)
1875
		priv->radio_on = enable;
1876 1877 1878 1879

	return rc;
}

1880
static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
1881
{
1882
	return mwl8k_cmd_radio_control(hw, 0, 0);
1883 1884
}

1885
static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
1886
{
1887
	return mwl8k_cmd_radio_control(hw, 1, 0);
1888 1889
}

1890 1891 1892
static int
mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
{
1893
	struct mwl8k_priv *priv = hw->priv;
1894

1895
	priv->radio_short_preamble = short_preamble;
1896

1897
	return mwl8k_cmd_radio_control(hw, 1, 1);
1898 1899 1900
}

/*
1901
 * CMD_RF_TX_POWER.
1902 1903 1904
 */
#define MWL8K_TX_POWER_LEVEL_TOTAL	8

1905
struct mwl8k_cmd_rf_tx_power {
1906 1907 1908 1909 1910 1911 1912 1913
	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));

1914
static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
1915
{
1916
	struct mwl8k_cmd_rf_tx_power *cmd;
1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933
	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;
}

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 1966
/*
 * 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;
}

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 1997
/*
 * 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;
1998
	__u8 bssid[ETH_ALEN];
1999 2000 2001
} __attribute__((packed));

static int
2002
mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013
{
	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;
2014
	memcpy(cmd->bssid, mac, ETH_ALEN);
2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

	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,
2033
				    struct ieee80211_conf *conf)
2034
{
2035
	struct ieee80211_channel *channel = conf->channel;
2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046
	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;
2047

2048
	if (channel->band == IEEE80211_BAND_2GHZ)
2049 2050 2051 2052 2053 2054 2055 2056 2057
		cmd->channel_flags |= cpu_to_le32(0x00000001);

	if (conf->channel_type == NL80211_CHAN_NO_HT ||
	    conf->channel_type == NL80211_CHAN_HT20)
		cmd->channel_flags |= cpu_to_le32(0x00000080);
	else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
		cmd->channel_flags |= cpu_to_le32(0x000001900);
	else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
		cmd->channel_flags |= cpu_to_le32(0x000000900);
2058 2059 2060 2061 2062 2063 2064 2065

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

	return rc;
}

/*
2066
 * CMD_SET_AID.
2067
 */
2068 2069 2070 2071
#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
2072

2073 2074 2075
struct mwl8k_cmd_update_set_aid {
	struct	mwl8k_cmd_pkt header;
	__le16	aid;
2076

2077 2078 2079 2080
	 /* AP's MAC address (BSSID) */
	__u8	bssid[ETH_ALEN];
	__le16	protection_mode;
	__u8	supp_rates[14];
2081 2082
} __attribute__((packed));

L
Lennert Buytenhek 已提交
2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098
static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
{
	int i;
	int j;

	/*
	 * Clear nonstandard rates 4 and 13.
	 */
	mask &= 0x1fef;

	for (i = 0, j = 0; i < 14; i++) {
		if (mask & (1 << i))
			rates[j++] = mwl8k_rates[i].hw_value;
	}
}

2099
static int
L
Lennert Buytenhek 已提交
2100 2101
mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
		  struct ieee80211_vif *vif, u32 legacy_rate_mask)
2102
{
2103 2104
	struct mwl8k_cmd_update_set_aid *cmd;
	u16 prot_mode;
2105 2106 2107 2108 2109 2110
	int rc;

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

2111
	cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
2112
	cmd->header.length = cpu_to_le16(sizeof(*cmd));
2113
	cmd->aid = cpu_to_le16(vif->bss_conf.aid);
2114
	memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
2115

2116
	if (vif->bss_conf.use_cts_prot) {
2117 2118
		prot_mode = MWL8K_FRAME_PROT_11G;
	} else {
2119
		switch (vif->bss_conf.ht_operation_mode &
2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132
			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);
2133

L
Lennert Buytenhek 已提交
2134
	legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
2135 2136 2137 2138 2139 2140 2141

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

	return rc;
}

2142
/*
2143
 * CMD_SET_RATE.
2144
 */
2145 2146 2147 2148 2149 2150 2151
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];
2152 2153
} __attribute__((packed));

2154
static int
L
Lennert Buytenhek 已提交
2155
mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
2156
		   u32 legacy_rate_mask, u8 *mcs_rates)
2157
{
2158
	struct mwl8k_cmd_set_rate *cmd;
2159 2160 2161 2162 2163 2164
	int rc;

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

2165
	cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
2166
	cmd->header.length = cpu_to_le16(sizeof(*cmd));
L
Lennert Buytenhek 已提交
2167
	legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
2168
	memcpy(cmd->mcs_set, mcs_rates, 16);
2169 2170 2171 2172 2173 2174 2175

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

	return rc;
}

2176
/*
2177
 * CMD_FINALIZE_JOIN.
2178
 */
2179 2180 2181
#define MWL8K_FJ_BEACON_MAXLEN	128

struct mwl8k_cmd_finalize_join {
2182
	struct mwl8k_cmd_pkt header;
2183 2184
	__le32 sleep_interval;	/* Number of beacon periods to sleep */
	__u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
2185 2186
} __attribute__((packed));

2187 2188
static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
				   int framelen, int dtim)
2189
{
2190 2191 2192
	struct mwl8k_cmd_finalize_join *cmd;
	struct ieee80211_mgmt *payload = frame;
	int payload_len;
2193 2194 2195 2196 2197 2198
	int rc;

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

2199
	cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
2200
	cmd->header.length = cpu_to_le16(sizeof(*cmd));
2201 2202 2203 2204 2205 2206 2207 2208 2209
	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);
2210 2211 2212 2213 2214 2215 2216 2217

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

	return rc;
}

/*
2218
 * CMD_SET_RTS_THRESHOLD.
2219
 */
2220
struct mwl8k_cmd_set_rts_threshold {
2221 2222
	struct mwl8k_cmd_pkt header;
	__le16 action;
2223
	__le16 threshold;
2224 2225
} __attribute__((packed));

2226 2227
static int mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw,
				       u16 action, u16 threshold)
2228
{
2229
	struct mwl8k_cmd_set_rts_threshold *cmd;
2230 2231 2232 2233 2234 2235
	int rc;

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

2236
	cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
2237
	cmd->header.length = cpu_to_le16(sizeof(*cmd));
2238 2239
	cmd->action = cpu_to_le16(action);
	cmd->threshold = cpu_to_le16(threshold);
2240 2241 2242 2243 2244 2245 2246 2247

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

	return rc;
}

/*
2248
 * CMD_SET_SLOT.
2249
 */
2250
struct mwl8k_cmd_set_slot {
2251 2252
	struct mwl8k_cmd_pkt header;
	__le16 action;
2253
	__u8 short_slot;
2254 2255
} __attribute__((packed));

2256
static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
2257
{
2258
	struct mwl8k_cmd_set_slot *cmd;
2259 2260 2261 2262 2263 2264
	int rc;

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

2265
	cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
2266
	cmd->header.length = cpu_to_le16(sizeof(*cmd));
2267 2268
	cmd->action = cpu_to_le16(MWL8K_CMD_SET);
	cmd->short_slot = short_slot_time;
2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287

	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;

2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304
	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;
2305

2306 2307
			/* Log exponent of min contention period: 0...15 */
			__u8 log_cw_min;
2308

2309 2310
			/* Adaptive interframe spacing in units of 32us */
			__u8 aifs;
2311

2312 2313 2314 2315
			/* TX queue to configure */
			__u8 txq;
		} sta;
	};
2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326
} __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
2327 2328 2329
mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
			  __u16 cw_min, __u16 cw_max,
			  __u8 aifs, __u16 txop)
2330
{
2331
	struct mwl8k_priv *priv = hw->priv;
2332 2333 2334 2335 2336 2337 2338
	struct mwl8k_cmd_set_edca_params *cmd;
	int rc;

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

2339 2340 2341 2342 2343 2344
	/*
	 * Queues 0 (BE) and 1 (BK) are swapped in hardware for
	 * this call.
	 */
	qnum ^= !(qnum >> 1);

2345 2346 2347 2348
	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);
2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359
	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;
	}
2360 2361 2362 2363 2364 2365 2366 2367

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

	return rc;
}

/*
2368
 * CMD_SET_WMM_MODE.
2369
 */
2370
struct mwl8k_cmd_set_wmm_mode {
2371
	struct mwl8k_cmd_pkt header;
2372
	__le16 action;
2373 2374
} __attribute__((packed));

2375
static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
2376
{
2377 2378
	struct mwl8k_priv *priv = hw->priv;
	struct mwl8k_cmd_set_wmm_mode *cmd;
2379 2380 2381 2382 2383 2384
	int rc;

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

2385
	cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
2386
	cmd->header.length = cpu_to_le16(sizeof(*cmd));
2387
	cmd->action = cpu_to_le16(!!enable);
2388 2389 2390

	rc = mwl8k_post_cmd(hw, &cmd->header);
	kfree(cmd);
2391

2392 2393
	if (!rc)
		priv->wmm_enabled = enable;
2394 2395 2396 2397 2398

	return rc;
}

/*
2399
 * CMD_MIMO_CONFIG.
2400
 */
2401 2402 2403 2404 2405
struct mwl8k_cmd_mimo_config {
	struct mwl8k_cmd_pkt header;
	__le32 action;
	__u8 rx_antenna_map;
	__u8 tx_antenna_map;
2406 2407
} __attribute__((packed));

2408
static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
2409
{
2410
	struct mwl8k_cmd_mimo_config *cmd;
2411 2412 2413 2414 2415 2416
	int rc;

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

2417
	cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
2418
	cmd->header.length = cpu_to_le16(sizeof(*cmd));
2419 2420 2421
	cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
	cmd->rx_antenna_map = rx;
	cmd->tx_antenna_map = tx;
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 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485

	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
2486 2487 2488 2489
		/*
		 * Copy over each field manually so that endian
		 * conversion can be done.
		 */
2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513
		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;
}

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 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
/*
 * 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.
 */
2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646
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));

2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661
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));

2662 2663 2664 2665 2666 2667 2668
#define MWL8K_STA_DB_MODIFY_ENTRY	1
#define MWL8K_STA_DB_DEL_ENTRY		2

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

static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
L
Lennert Buytenhek 已提交
2669
				      struct ieee80211_vif *vif,
2670
				      struct ieee80211_sta *sta)
2671 2672
{
	struct mwl8k_cmd_update_stadb *cmd;
2673
	struct peer_capability_info *p;
2674 2675 2676 2677 2678 2679 2680 2681
	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));
2682
	cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
2683
	memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
2684

2685 2686 2687
	p = &cmd->peer_info;
	p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
	p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
2688 2689 2690 2691 2692 2693 2694
	p->ht_support = sta->ht_cap.ht_supported;
	p->ht_caps = sta->ht_cap.cap;
	p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
		((sta->ht_cap.ampdu_density & 7) << 2);
	legacy_rate_mask_to_array(p->legacy_rates,
				  sta->supp_rates[IEEE80211_BAND_2GHZ]);
	memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716
	p->interop = 1;
	p->amsdu_enabled = 0;

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

	return rc ? rc : p->station_id;
}

static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
				      struct ieee80211_vif *vif, u8 *addr)
{
	struct mwl8k_cmd_update_stadb *cmd;
	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(MWL8K_STA_DB_DEL_ENTRY);
2717
	memcpy(cmd->peer_addr, addr, ETH_ALEN);
2718

2719
	rc = mwl8k_post_cmd(hw, &cmd->header);
2720 2721 2722 2723 2724
	kfree(cmd);

	return rc;
}

2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749

/*
 * 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) {
2750
		if (priv->hostcmd_wait != NULL)
2751 2752 2753 2754
			complete(priv->hostcmd_wait);
	}

	if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
2755
		if (!mutex_is_locked(&priv->fw_mutex) &&
2756
		    priv->radio_on && priv->pending_tx_pkts)
2757
			mwl8k_tx_start(priv);
2758 2759 2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774
	}

	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
2775
		       "disabled\n", wiphy_name(hw->wiphy));
2776 2777 2778 2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789
		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;

2790
	rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
2791 2792 2793
			 IRQF_SHARED, MWL8K_NAME, hw);
	if (rc) {
		printk(KERN_ERR "%s: failed to register IRQ handler\n",
L
Lennert Buytenhek 已提交
2794
		       wiphy_name(hw->wiphy));
2795
		return -EIO;
2796 2797
	}

2798 2799 2800
	/* Enable tx reclaim tasklet */
	tasklet_enable(&priv->tx_reclaim_task);

2801
	/* Enable interrupts */
2802
	iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
2803

2804 2805
	rc = mwl8k_fw_lock(hw);
	if (!rc) {
2806
		rc = mwl8k_cmd_radio_enable(hw);
2807

2808 2809
		if (!priv->ap_fw) {
			if (!rc)
2810
				rc = mwl8k_cmd_enable_sniffer(hw, 0);
2811

2812 2813 2814 2815 2816 2817 2818
			if (!rc)
				rc = mwl8k_cmd_set_pre_scan(hw);

			if (!rc)
				rc = mwl8k_cmd_set_post_scan(hw,
						"\x00\x00\x00\x00\x00\x00");
		}
2819 2820

		if (!rc)
2821
			rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
2822

2823
		if (!rc)
2824
			rc = mwl8k_cmd_set_wmm_mode(hw, 0);
2825

2826 2827 2828 2829 2830 2831 2832 2833
		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);
	}
2834 2835 2836 2837 2838 2839 2840 2841 2842

	return rc;
}

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

2843
	mwl8k_cmd_radio_disable(hw);
2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864

	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,
2865
				struct ieee80211_vif *vif)
2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878
{
	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.
	 */
2879
	if (vif->type != NL80211_IFTYPE_STATION)
2880 2881
		return -EINVAL;

2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893
	/*
	 * 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;
	}

2894
	/* Clean out driver private area */
2895
	mwl8k_vif = MWL8K_VIF(vif);
2896 2897
	memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));

2898
	/* Set and save the mac address */
2899 2900
	mwl8k_cmd_set_mac_addr(hw, vif->addr);
	memcpy(mwl8k_vif->mac_addr, vif->addr, ETH_ALEN);
2901 2902 2903 2904

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

2905
	priv->vif = vif;
2906 2907 2908 2909 2910 2911
	priv->current_channel = NULL;

	return 0;
}

static void mwl8k_remove_interface(struct ieee80211_hw *hw,
2912
				   struct ieee80211_vif *vif)
2913 2914 2915 2916 2917 2918
{
	struct mwl8k_priv *priv = hw->priv;

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

2919
	mwl8k_cmd_set_mac_addr(hw, "\x00\x00\x00\x00\x00\x00");
2920

2921 2922 2923
	priv->vif = NULL;
}

2924
static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
2925 2926 2927
{
	struct ieee80211_conf *conf = &hw->conf;
	struct mwl8k_priv *priv = hw->priv;
2928
	int rc;
2929

L
Lennert Buytenhek 已提交
2930
	if (conf->flags & IEEE80211_CONF_IDLE) {
2931
		mwl8k_cmd_radio_disable(hw);
L
Lennert Buytenhek 已提交
2932
		priv->current_channel = NULL;
2933
		return 0;
L
Lennert Buytenhek 已提交
2934 2935
	}

2936 2937 2938
	rc = mwl8k_fw_lock(hw);
	if (rc)
		return rc;
2939

2940
	rc = mwl8k_cmd_radio_enable(hw);
2941 2942
	if (rc)
		goto out;
2943

2944
	rc = mwl8k_cmd_set_rf_channel(hw, conf);
2945 2946 2947 2948
	if (rc)
		goto out;

	priv->current_channel = conf->channel;
2949 2950 2951

	if (conf->power_level > 18)
		conf->power_level = 18;
2952
	rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
2953 2954
	if (rc)
		goto out;
2955

2956 2957 2958 2959 2960 2961 2962
	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);
	}
2963

2964 2965
out:
	mwl8k_fw_unlock(hw);
2966

2967
	return rc;
2968 2969
}

2970 2971 2972 2973
static void mwl8k_bss_info_changed(struct ieee80211_hw *hw,
				   struct ieee80211_vif *vif,
				   struct ieee80211_bss_conf *info,
				   u32 changed)
2974 2975
{
	struct mwl8k_priv *priv = hw->priv;
2976
	u32 ap_legacy_rates;
2977
	u8 ap_mcs_rates[16];
2978 2979
	int rc;

2980
	if (mwl8k_fw_lock(hw))
2981
		return;
2982

2983 2984 2985 2986 2987
	/*
	 * No need to capture a beacon if we're no longer associated.
	 */
	if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
		priv->capture_beacon = false;
2988

2989
	/*
2990
	 * Get the AP's legacy and MCS rates.
2991 2992
	 */
	ap_legacy_rates = 0;
2993
	if (vif->bss_conf.assoc) {
L
Lennert Buytenhek 已提交
2994 2995 2996
		struct ieee80211_sta *ap;
		rcu_read_lock();

2997 2998 2999
		ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
		if (ap == NULL) {
			rcu_read_unlock();
L
Lennert Buytenhek 已提交
3000
			goto out;
3001 3002 3003
		}

		ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
3004
		memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
3005 3006 3007

		rcu_read_unlock();
	}
L
Lennert Buytenhek 已提交
3008

3009
	if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
3010
		rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
3011 3012
		if (rc)
			goto out;
3013

3014 3015 3016 3017
		rc = mwl8k_cmd_use_fixed_rate(hw, MWL8K_USE_AUTO_RATE,
			MWL8K_UCAST_RATE, NULL);
		if (rc)
			goto out;
3018
	}
3019

3020
	if (changed & BSS_CHANGED_ERP_PREAMBLE) {
3021 3022
		rc = mwl8k_set_radio_preamble(hw,
				vif->bss_conf.use_short_preamble);
3023 3024
		if (rc)
			goto out;
3025
	}
3026

3027
	if (changed & BSS_CHANGED_ERP_SLOT) {
3028
		rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
3029 3030
		if (rc)
			goto out;
3031
	}
3032

3033 3034 3035
	if (((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) ||
	    (changed & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT))) {
		rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
3036 3037
		if (rc)
			goto out;
3038
	}
3039

3040 3041
	if (vif->bss_conf.assoc &&
	    (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
3042 3043 3044 3045
		/*
		 * Finalize the join.  Tell rx handler to process
		 * next beacon from our BSSID.
		 */
3046
		memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
3047 3048 3049
		priv->capture_beacon = true;
	}

3050 3051
out:
	mwl8k_fw_unlock(hw);
3052 3053
}

3054 3055 3056 3057 3058
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
3059 3060 3061 3062 3063 3064 3065 3066
	/*
	 * 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);
3067 3068 3069 3070

	return (unsigned long)cmd;
}

3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091
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) {
3092
		if (mwl8k_cmd_enable_sniffer(hw, 1))
3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103
			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;
}

3104 3105 3106 3107 3108 3109
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;
3110 3111
	struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;

3112 3113 3114 3115 3116 3117 3118 3119 3120 3121
	/*
	 * 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;
	}

3122 3123 3124 3125 3126 3127 3128 3129 3130
	/*
	 * 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;
	}
3131

3132
	/* Clear unsupported feature flags */
L
Lennert Buytenhek 已提交
3133
	*total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
3134

3135 3136
	if (mwl8k_fw_lock(hw))
		return;
3137

3138
	if (priv->sniffer_enabled) {
3139
		mwl8k_cmd_enable_sniffer(hw, 0);
3140 3141 3142
		priv->sniffer_enabled = false;
	}

3143
	if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
3144 3145 3146 3147
		if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
			/*
			 * Disable the BSS filter.
			 */
3148
			mwl8k_cmd_set_pre_scan(hw);
3149
		} else {
3150
			const u8 *bssid;
3151

3152 3153 3154 3155 3156 3157 3158 3159 3160
			/*
			 * 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";
3161
			if (priv->vif != NULL)
3162
				bssid = priv->vif->bss_conf.bssid;
3163

3164
			mwl8k_cmd_set_post_scan(hw, bssid);
3165 3166 3167
		}
	}

L
Lennert Buytenhek 已提交
3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181
	/*
	 * 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);
3182
	}
3183

3184
	mwl8k_fw_unlock(hw);
3185 3186 3187 3188
}

static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
{
3189
	return mwl8k_cmd_set_rts_threshold(hw, MWL8K_CMD_SET, value);
3190 3191
}

3192 3193 3194 3195 3196
struct mwl8k_sta_notify_item
{
	struct list_head list;
	struct ieee80211_vif *vif;
	enum sta_notify_cmd cmd;
3197
	struct ieee80211_sta sta;
3198 3199 3200 3201 3202 3203
};

static void mwl8k_sta_notify_worker(struct work_struct *work)
{
	struct mwl8k_priv *priv =
		container_of(work, struct mwl8k_priv, sta_notify_worker);
3204
	struct ieee80211_hw *hw = priv->hw;
3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215

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

		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);

3216 3217 3218
		if (s->cmd == STA_NOTIFY_ADD) {
			int rc;

3219
			rc = mwl8k_cmd_update_stadb_add(hw, s->vif, &s->sta);
3220 3221 3222 3223
			if (rc >= 0) {
				struct ieee80211_sta *sta;

				rcu_read_lock();
3224
				sta = ieee80211_find_sta(s->vif, s->sta.addr);
3225 3226 3227 3228 3229
				if (sta != NULL)
					MWL8K_STA(sta)->peer_id = rc;
				rcu_read_unlock();
			}
		} else {
3230
			mwl8k_cmd_update_stadb_del(hw, s->vif, s->sta.addr);
3231
		}
3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253

		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;
3254
		s->sta = *sta;
3255 3256 3257 3258 3259 3260 3261 3262 3263

		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);
	}
}

3264 3265 3266
static int mwl8k_conf_tx(struct ieee80211_hw *hw, u16 queue,
			 const struct ieee80211_tx_queue_params *params)
{
3267
	struct mwl8k_priv *priv = hw->priv;
3268 3269
	int rc;

3270 3271 3272
	rc = mwl8k_fw_lock(hw);
	if (!rc) {
		if (!priv->wmm_enabled)
3273
			rc = mwl8k_cmd_set_wmm_mode(hw, 1);
3274

3275
		if (!rc)
3276 3277 3278 3279 3280
			rc = mwl8k_cmd_set_edca_params(hw, queue,
						       params->cw_min,
						       params->cw_max,
						       params->aifs,
						       params->txop);
3281 3282

		mwl8k_fw_unlock(hw);
3283
	}
3284

3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297
	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;
3298
		memcpy(&stats[index], &txq->stats,
3299 3300 3301 3302
			sizeof(struct ieee80211_tx_queue_stats));
	}
	spin_unlock_bh(&priv->tx_lock);

3303
	return 0;
3304 3305 3306 3307 3308
}

static int mwl8k_get_stats(struct ieee80211_hw *hw,
			   struct ieee80211_low_level_stats *stats)
{
3309
	return mwl8k_cmd_get_stat(hw, stats);
3310 3311
}

3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327
static int
mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
		   enum ieee80211_ampdu_mlme_action action,
		   struct ieee80211_sta *sta, u16 tid, u16 *ssn)
{
	switch (action) {
	case IEEE80211_AMPDU_RX_START:
	case IEEE80211_AMPDU_RX_STOP:
		if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
			return -ENOTSUPP;
		return 0;
	default:
		return -ENOTSUPP;
	}
}

3328 3329 3330 3331 3332 3333 3334 3335
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,
3336
	.prepare_multicast	= mwl8k_prepare_multicast,
3337 3338
	.configure_filter	= mwl8k_configure_filter,
	.set_rts_threshold	= mwl8k_set_rts_threshold,
3339
	.sta_notify		= mwl8k_sta_notify,
3340 3341 3342
	.conf_tx		= mwl8k_conf_tx,
	.get_tx_stats		= mwl8k_get_tx_stats,
	.get_stats		= mwl8k_get_stats,
3343
	.ampdu_action		= mwl8k_ampdu_action,
3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355
};

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);

3356
	if (priv->tx_wait != NULL && !priv->pending_tx_pkts) {
3357 3358
		complete(priv->tx_wait);
		priv->tx_wait = NULL;
3359 3360 3361 3362 3363 3364 3365 3366 3367 3368
	}
	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;

3369 3370
	mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len,
				priv->vif->bss_conf.dtim_period);
3371 3372 3373 3374 3375
	dev_kfree_skb(skb);

	priv->beacon_skb = NULL;
}

3376
enum {
3377 3378
	MWL8363 = 0,
	MWL8687,
3379
	MWL8366,
3380 3381
};

3382
static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = {
3383 3384 3385 3386 3387
	[MWL8363] = {
		.part_name	= "88w8363",
		.helper_image	= "mwl8k/helper_8363.fw",
		.fw_image	= "mwl8k/fmimage_8363.fw",
	},
3388
	[MWL8687] = {
3389 3390 3391 3392
		.part_name	= "88w8687",
		.helper_image	= "mwl8k/helper_8687.fw",
		.fw_image	= "mwl8k/fmimage_8687.fw",
	},
3393
	[MWL8366] = {
3394 3395 3396
		.part_name	= "88w8366",
		.helper_image	= "mwl8k/helper_8366.fw",
		.fw_image	= "mwl8k/fmimage_8366.fw",
3397
		.ap_rxd_ops	= &rxd_8366_ap_ops,
3398
	},
3399 3400 3401
};

static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
3402 3403
	{ PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
	{ PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
3404 3405 3406 3407
	{ PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
	{ PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
	{ PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
	{ },
3408 3409 3410
};
MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);

3411 3412 3413
static int __devinit mwl8k_probe(struct pci_dev *pdev,
				 const struct pci_device_id *id)
{
3414
	static int printed_version = 0;
3415 3416 3417 3418
	struct ieee80211_hw *hw;
	struct mwl8k_priv *priv;
	int rc;
	int i;
3419 3420 3421 3422 3423

	if (!printed_version) {
		printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
		printed_version = 1;
	}
3424

3425

3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436
	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);
3437
		goto err_disable_device;
3438 3439 3440 3441
	}

	pci_set_master(pdev);

3442

3443 3444 3445 3446 3447 3448 3449
	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;
	}

3450 3451 3452
	SET_IEEE80211_DEV(hw, &pdev->dev);
	pci_set_drvdata(pdev, hw);

3453 3454 3455
	priv = hw->priv;
	priv->hw = hw;
	priv->pdev = pdev;
3456
	priv->device_info = &mwl8k_info_tbl[id->driver_data];
3457 3458


L
Lennert Buytenhek 已提交
3459 3460 3461
	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
3462
		       wiphy_name(hw->wiphy));
3463 3464 3465
		goto err_iounmap;
	}

L
Lennert Buytenhek 已提交
3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479
	/*
	 * 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;
		}
	}

3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503

	/* 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);


3504
	if (priv->ap_fw) {
3505
		priv->rxd_ops = priv->device_info->ap_rxd_ops;
3506 3507 3508 3509 3510 3511 3512
		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 {
3513
		priv->rxd_ops = &rxd_sta_ops;
3514
	}
3515 3516 3517 3518 3519 3520

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


3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543
	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 */
3544
	hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_NOISE_DBM;
3545
	hw->vif_data_size = sizeof(struct mwl8k_vif);
3546
	hw->sta_data_size = sizeof(struct mwl8k_sta);
3547 3548 3549
	priv->vif = NULL;

	/* Set default radio state and preamble */
3550
	priv->radio_on = 0;
3551
	priv->radio_short_preamble = 0;
3552

3553 3554 3555 3556 3557
	/* 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);

3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568
	/* 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)
3569
		goto err_stop_firmware;
3570 3571 3572

	rc = mwl8k_rxq_init(hw, 0);
	if (rc)
3573
		goto err_free_cookie;
3574 3575
	rxq_refill(hw, 0, INT_MAX);

3576 3577 3578 3579 3580
	mutex_init(&priv->fw_mutex);
	priv->fw_mutex_owner = NULL;
	priv->fw_mutex_depth = 0;
	priv->hostcmd_wait = NULL;

3581 3582
	spin_lock_init(&priv->tx_lock);

3583 3584
	priv->tx_wait = NULL;

3585 3586 3587 3588 3589 3590 3591
	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);
3592
	iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3593 3594 3595
	iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
	iowrite32(0xffffffff, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);

3596
	rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
3597 3598 3599
			 IRQF_SHARED, MWL8K_NAME, hw);
	if (rc) {
		printk(KERN_ERR "%s: failed to register IRQ handler\n",
L
Lennert Buytenhek 已提交
3600
		       wiphy_name(hw->wiphy));
3601 3602 3603 3604 3605 3606 3607 3608
		goto err_free_queues;
	}

	/*
	 * Temporarily enable interrupts.  Initial firmware host
	 * commands use interrupts and avoids polling.  Disable
	 * interrupts when done.
	 */
3609
	iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3610 3611

	/* Get config data, mac addrs etc */
3612 3613 3614 3615 3616 3617
	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);
3618 3619

		hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
3620
	}
3621
	if (rc) {
L
Lennert Buytenhek 已提交
3622 3623
		printk(KERN_ERR "%s: Cannot initialise firmware\n",
		       wiphy_name(hw->wiphy));
3624
		goto err_free_irq;
3625 3626 3627
	}

	/* Turn radio off */
3628
	rc = mwl8k_cmd_radio_disable(hw);
3629
	if (rc) {
L
Lennert Buytenhek 已提交
3630
		printk(KERN_ERR "%s: Cannot disable\n", wiphy_name(hw->wiphy));
3631
		goto err_free_irq;
3632 3633
	}

3634
	/* Clear MAC address */
3635
	rc = mwl8k_cmd_set_mac_addr(hw, "\x00\x00\x00\x00\x00\x00");
3636 3637 3638
	if (rc) {
		printk(KERN_ERR "%s: Cannot clear MAC address\n",
		       wiphy_name(hw->wiphy));
3639
		goto err_free_irq;
3640 3641
	}

3642 3643 3644 3645 3646 3647
	/* 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
3648 3649
		printk(KERN_ERR "%s: Cannot register device\n",
		       wiphy_name(hw->wiphy));
3650
		goto err_free_queues;
3651 3652
	}

3653
	printk(KERN_INFO "%s: %s v%d, %pM, %s firmware %u.%u.%u.%u\n",
3654
	       wiphy_name(hw->wiphy), priv->device_info->part_name,
3655
	       priv->hw_rev, hw->wiphy->perm_addr,
3656
	       priv->ap_fw ? "AP" : "STA",
3657 3658
	       (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
	       (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670

	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);

3671
err_free_cookie:
3672 3673 3674 3675
	if (priv->cookie != NULL)
		pci_free_consistent(priv->pdev, 4,
				priv->cookie, priv->cookie_dma);

3676 3677 3678 3679 3680
err_stop_firmware:
	mwl8k_hw_reset(priv);
	mwl8k_release_firmware(priv);

err_iounmap:
3681 3682 3683
	if (priv->regs != NULL)
		pci_iounmap(pdev, priv->regs);

L
Lennert Buytenhek 已提交
3684 3685 3686
	if (priv->sram != NULL)
		pci_iounmap(pdev, priv->sram);

3687 3688 3689 3690 3691
	pci_set_drvdata(pdev, NULL);
	ieee80211_free_hw(hw);

err_free_reg:
	pci_release_regions(pdev);
3692 3693

err_disable_device:
3694 3695 3696 3697 3698
	pci_disable_device(pdev);

	return rc;
}

3699
static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
3700 3701 3702 3703
{
	printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
}

3704
static void __devexit mwl8k_remove(struct pci_dev *pdev)
3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715
{
	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);

3716 3717
	ieee80211_unregister_hw(hw);

3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732
	/* 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
3733
	pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
3734 3735

	pci_iounmap(pdev, priv->regs);
L
Lennert Buytenhek 已提交
3736
	pci_iounmap(pdev, priv->sram);
3737 3738 3739 3740 3741 3742 3743 3744
	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,
3745
	.id_table	= mwl8k_pci_id_table,
3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762
	.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
3763 3764 3765 3766 3767

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