mwl8k.c 85.1 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	"0.10"
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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 *rxd_ops;
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	u16 modes;
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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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};

/* Pointers to the firmware data and meta information about it.  */
struct mwl8k_firmware {
	/* Boot helper code */
	struct firmware *helper;
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	/* Microcode */
	struct firmware *ucode;
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};

struct mwl8k_priv {
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	void __iomem *sram;
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	void __iomem *regs;
	struct ieee80211_hw *hw;

	struct pci_dev *pdev;

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	struct mwl8k_device_info *device_info;
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	bool ap_fw;
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	struct rxd_ops *rxd_ops;
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	/* firmware files and meta data */
	struct mwl8k_firmware fw;

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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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	/* 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 {
	/* backpointer to parent config block */
	struct mwl8k_priv *priv;

	/* BSS config of AP or IBSS from mac80211*/
	struct ieee80211_bss_conf bss_info;

	/* BSSID of AP or IBSS */
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	u8	bssid[ETH_ALEN];
	u8	mac_addr[ETH_ALEN];
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	/* Index into station database. Returned by UPDATE_STADB.  */
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	u8	peer_id;

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

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

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

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

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

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

	return buf;
}

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

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

static void mwl8k_release_firmware(struct mwl8k_priv *priv)
{
	mwl8k_release_fw(&priv->fw.ucode);
	mwl8k_release_fw(&priv->fw.helper);
}

/* 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) {
		rc = mwl8k_request_fw(priv, di->helper_image, &priv->fw.helper);
		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);
		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;
	struct firmware *fw = priv->fw.ucode;
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	struct mwl8k_device_info *di = priv->device_info;
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	int rc;
	int loops;

	if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
		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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	if (di->modes & BIT(NL80211_IFTYPE_AP))
		iowrite32(MWL8K_MODE_AP, priv->regs + MWL8K_HIU_GEN_PTR);
	else
		iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
591

592
	loops = 500000;
593
	do {
594 595 596 597 598 599 600 601
		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;
602
			break;
603 604 605
		}

		cond_resched();
606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647
		udelay(1);
	} while (--loops);

	return loops ? 0 : -ETIMEDOUT;
}


/*
 * Defines shared between transmission and reception.
 */
/* HT control fields for firmware */
struct ewc_ht_info {
	__le16	control1;
	__le16	control2;
	__le16	control3;
} __attribute__((packed));

/* Firmware Station database operations */
#define MWL8K_STA_DB_ADD_ENTRY		0
#define MWL8K_STA_DB_MODIFY_ENTRY	1
#define MWL8K_STA_DB_DEL_ENTRY		2
#define MWL8K_STA_DB_FLUSH		3

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

struct 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.  */
648
	__u8	legacy_rates[12];
649 650

	/* HT rate table. Intersection of our rates and peer rates.  */
651
	__u8	ht_rates[16];
652
	__u8	pad[16];
653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701

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

/* Inline functions to manipulate QoS field in data descriptor.  */
static inline u16 mwl8k_qos_setbit_eosp(u16 qos)
{
	u16 val_mask = 1 << 4;

	/* End of Service Period Bit 4 */
	return qos | val_mask;
}

static inline u16 mwl8k_qos_setbit_ack(u16 qos, u8 ack_policy)
{
	u16 val_mask = 0x3;
	u8	shift = 5;
	u16 qos_mask = ~(val_mask << shift);

	/* Ack Policy Bit 5-6 */
	return (qos & qos_mask) | ((ack_policy & val_mask) << shift);
}

static inline u16 mwl8k_qos_setbit_amsdu(u16 qos)
{
	u16 val_mask = 1 << 7;

	/* AMSDU present Bit 7 */
	return qos | val_mask;
}

static inline u16 mwl8k_qos_setbit_qlen(u16 qos, u8 len)
{
	u16 val_mask = 0xff;
	u8	shift = 8;
	u16 qos_mask = ~(val_mask << shift);

	/* Queue Length Bits 8-15 */
	return (qos & qos_mask) | ((len & val_mask) << shift);
}

/* DMA header used by firmware and hardware.  */
struct mwl8k_dma_data {
	__le16 fwlen;
	struct ieee80211_hdr wh;
702
	char data[0];
703 704 705
} __attribute__((packed));

/* Routines to add/remove DMA header from skb.  */
706
static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
707
{
708 709 710 711 712 713 714 715 716 717 718 719 720
	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);
		}
721
	}
722 723 724

	if (hdrlen != sizeof(*tr))
		skb_pull(skb, sizeof(*tr) - hdrlen);
725 726
}

727
static inline void mwl8k_add_dma_header(struct sk_buff *skb)
728 729
{
	struct ieee80211_hdr *wh;
730
	int hdrlen;
731 732
	struct mwl8k_dma_data *tr;

733 734 735 736 737 738
	/*
	 * 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).
	 */
739
	wh = (struct ieee80211_hdr *)skb->data;
740

741
	hdrlen = ieee80211_hdrlen(wh->frame_control);
742 743
	if (hdrlen != sizeof(*tr))
		skb_push(skb, sizeof(*tr) - hdrlen);
744

745 746
	if (ieee80211_is_data_qos(wh->frame_control))
		hdrlen -= 2;
747 748 749 750

	tr = (struct mwl8k_dma_data *)skb->data;
	if (wh != &tr->wh)
		memmove(&tr->wh, wh, hdrlen);
751 752
	if (hdrlen != sizeof(tr->wh))
		memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
753 754 755 756 757 758

	/*
	 * 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.
	 */
759
	tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr));
760 761 762 763
}


/*
764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783
 * Packet reception for 88w8366.
 */
struct mwl8k_rxd_8366 {
	__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));

784 785 786 787
#define MWL8K_8366_RATE_INFO_MCS_FORMAT		0x80
#define MWL8K_8366_RATE_INFO_40MHZ		0x40
#define MWL8K_8366_RATE_INFO_RATEID(x)		((x) & 0x3f)

788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808
#define MWL8K_8366_RX_CTRL_OWNED_BY_HOST	0x80

static void mwl8k_rxd_8366_init(void *_rxd, dma_addr_t next_dma_addr)
{
	struct mwl8k_rxd_8366 *rxd = _rxd;

	rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
	rxd->rx_ctrl = MWL8K_8366_RX_CTRL_OWNED_BY_HOST;
}

static void mwl8k_rxd_8366_refill(void *_rxd, dma_addr_t addr, int len)
{
	struct mwl8k_rxd_8366 *rxd = _rxd;

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

static int
809 810
mwl8k_rxd_8366_process(void *_rxd, struct ieee80211_rx_status *status,
		       __le16 *qos)
811 812 813 814 815 816 817 818 819 820 821 822
{
	struct mwl8k_rxd_8366 *rxd = _rxd;

	if (!(rxd->rx_ctrl & MWL8K_8366_RX_CTRL_OWNED_BY_HOST))
		return -1;
	rmb();

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

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

823
	if (rxd->rate & MWL8K_8366_RATE_INFO_MCS_FORMAT) {
824
		status->flag |= RX_FLAG_HT;
825 826 827
		if (rxd->rate & MWL8K_8366_RATE_INFO_40MHZ)
			status->flag |= RX_FLAG_40MHZ;
		status->rate_idx = MWL8K_8366_RATE_INFO_RATEID(rxd->rate);
828 829 830 831 832 833 834 835 836 837 838 839 840 841
	} 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);

842 843
	*qos = rxd->qos_control;

844 845 846 847 848 849 850 851 852 853 854 855
	return le16_to_cpu(rxd->pkt_len);
}

static struct rxd_ops rxd_8366_ops = {
	.rxd_size	= sizeof(struct mwl8k_rxd_8366),
	.rxd_init	= mwl8k_rxd_8366_init,
	.rxd_refill	= mwl8k_rxd_8366_refill,
	.rxd_process	= mwl8k_rxd_8366_process,
};

/*
 * Packet reception for 88w8687.
856
 */
857
struct mwl8k_rxd_8687 {
858 859 860 861
	__le16 pkt_len;
	__u8 link_quality;
	__u8 noise_level;
	__le32 pkt_phys_addr;
862
	__le32 next_rxd_phys_addr;
863 864 865 866 867 868 869 870 871 872 873
	__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));

874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901
#define MWL8K_8687_RATE_INFO_SHORTPRE		0x8000
#define MWL8K_8687_RATE_INFO_ANTSELECT(x)	(((x) >> 11) & 0x3)
#define MWL8K_8687_RATE_INFO_RATEID(x)		(((x) >> 3) & 0x3f)
#define MWL8K_8687_RATE_INFO_40MHZ		0x0004
#define MWL8K_8687_RATE_INFO_SHORTGI		0x0002
#define MWL8K_8687_RATE_INFO_MCS_FORMAT		0x0001

#define MWL8K_8687_RX_CTRL_OWNED_BY_HOST	0x02

static void mwl8k_rxd_8687_init(void *_rxd, dma_addr_t next_dma_addr)
{
	struct mwl8k_rxd_8687 *rxd = _rxd;

	rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
	rxd->rx_ctrl = MWL8K_8687_RX_CTRL_OWNED_BY_HOST;
}

static void mwl8k_rxd_8687_refill(void *_rxd, dma_addr_t addr, int len)
{
	struct mwl8k_rxd_8687 *rxd = _rxd;

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

static int
902 903
mwl8k_rxd_8687_process(void *_rxd, struct ieee80211_rx_status *status,
		       __le16 *qos)
904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932
{
	struct mwl8k_rxd_8687 *rxd = _rxd;
	u16 rate_info;

	if (!(rxd->rx_ctrl & MWL8K_8687_RX_CTRL_OWNED_BY_HOST))
		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;
	status->antenna = MWL8K_8687_RATE_INFO_ANTSELECT(rate_info);
	status->rate_idx = MWL8K_8687_RATE_INFO_RATEID(rate_info);

	if (rate_info & MWL8K_8687_RATE_INFO_SHORTPRE)
		status->flag |= RX_FLAG_SHORTPRE;
	if (rate_info & MWL8K_8687_RATE_INFO_40MHZ)
		status->flag |= RX_FLAG_40MHZ;
	if (rate_info & MWL8K_8687_RATE_INFO_SHORTGI)
		status->flag |= RX_FLAG_SHORT_GI;
	if (rate_info & MWL8K_8687_RATE_INFO_MCS_FORMAT)
		status->flag |= RX_FLAG_HT;

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

933 934
	*qos = rxd->qos_control;

935 936 937 938 939 940 941 942 943 944 945
	return le16_to_cpu(rxd->pkt_len);
}

static struct rxd_ops rxd_8687_ops = {
	.rxd_size	= sizeof(struct mwl8k_rxd_8687),
	.rxd_init	= mwl8k_rxd_8687_init,
	.rxd_refill	= mwl8k_rxd_8687_refill,
	.rxd_process	= mwl8k_rxd_8687_process,
};


946 947 948 949 950 951 952 953 954 955
#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;

956 957 958
	rxq->rxd_count = 0;
	rxq->head = 0;
	rxq->tail = 0;
959

960
	size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
961

962 963
	rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
	if (rxq->rxd == NULL) {
964
		printk(KERN_ERR "%s: failed to alloc RX descriptors\n",
L
Lennert Buytenhek 已提交
965
		       wiphy_name(hw->wiphy));
966 967
		return -ENOMEM;
	}
968
	memset(rxq->rxd, 0, size);
969

970 971
	rxq->buf = kmalloc(MWL8K_RX_DESCS * sizeof(*rxq->buf), GFP_KERNEL);
	if (rxq->buf == NULL) {
972
		printk(KERN_ERR "%s: failed to alloc RX skbuff list\n",
L
Lennert Buytenhek 已提交
973
		       wiphy_name(hw->wiphy));
974
		pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
975 976
		return -ENOMEM;
	}
977
	memset(rxq->buf, 0, MWL8K_RX_DESCS * sizeof(*rxq->buf));
978 979

	for (i = 0; i < MWL8K_RX_DESCS; i++) {
980 981
		int desc_size;
		void *rxd;
982
		int nexti;
983 984 985 986
		dma_addr_t next_dma_addr;

		desc_size = priv->rxd_ops->rxd_size;
		rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
987

988 989 990 991
		nexti = i + 1;
		if (nexti == MWL8K_RX_DESCS)
			nexti = 0;
		next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
992

993
		priv->rxd_ops->rxd_init(rxd, next_dma_addr);
994 995 996 997 998 999 1000 1001 1002 1003 1004 1005
	}

	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;
1006
	while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1007
		struct sk_buff *skb;
1008
		dma_addr_t addr;
1009
		int rx;
1010
		void *rxd;
1011 1012 1013 1014 1015

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

1016 1017
		addr = pci_map_single(priv->pdev, skb->data,
				      MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1018

1019 1020 1021 1022
		rxq->rxd_count++;
		rx = rxq->tail++;
		if (rxq->tail == MWL8K_RX_DESCS)
			rxq->tail = 0;
1023 1024
		rxq->buf[rx].skb = skb;
		pci_unmap_addr_set(&rxq->buf[rx], dma, addr);
1025 1026 1027

		rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
		priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042

		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++) {
1043 1044 1045 1046 1047 1048 1049 1050
		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;
1051 1052 1053
		}
	}

1054 1055
	kfree(rxq->buf);
	rxq->buf = NULL;
1056 1057

	pci_free_consistent(priv->pdev,
1058
			    MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1059 1060
			    rxq->rxd, rxq->rxd_dma);
	rxq->rxd = NULL;
1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075
}


/*
 * 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);
}

1076 1077
static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
				     struct sk_buff *skb)
1078
{
1079 1080
	struct mwl8k_priv *priv = hw->priv;

1081
	priv->capture_beacon = false;
1082
	memset(priv->capture_bssid, 0, ETH_ALEN);
1083 1084 1085 1086 1087 1088 1089 1090

	/*
	 * 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)
1091
		ieee80211_queue_work(hw, &priv->finalize_join_worker);
1092 1093 1094 1095 1096 1097 1098 1099 1100
}

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;
1101
	while (rxq->rxd_count && limit--) {
1102
		struct sk_buff *skb;
1103 1104
		void *rxd;
		int pkt_len;
1105
		struct ieee80211_rx_status status;
1106
		__le16 qos;
1107

1108
		skb = rxq->buf[rxq->head].skb;
1109 1110
		if (skb == NULL)
			break;
1111 1112 1113

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

1114
		pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos);
1115 1116 1117
		if (pkt_len < 0)
			break;

1118 1119 1120 1121 1122 1123
		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);
1124

1125 1126 1127 1128
		rxq->head++;
		if (rxq->head == MWL8K_RX_DESCS)
			rxq->head = 0;

1129
		rxq->rxd_count--;
1130

1131
		skb_put(skb, pkt_len);
1132
		mwl8k_remove_dma_header(skb, qos);
1133 1134

		/*
L
Lennert Buytenhek 已提交
1135 1136 1137
		 * 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.
1138
		 */
1139
		if (mwl8k_capture_bssid(priv, (void *)skb->data))
1140
			mwl8k_save_beacon(hw, skb);
1141

1142 1143
		memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
		ieee80211_rx_irqsafe(hw, skb);
1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172

		processed++;
	}

	return processed;
}


/*
 * Packet transmission.
 */

/* Transmit packet ACK policy */
#define MWL8K_TXD_ACK_POLICY_NORMAL		0
#define MWL8K_TXD_ACK_POLICY_BLOCKACK		3

#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

struct mwl8k_tx_desc {
	__le32 status;
	__u8 data_rate;
	__u8 tx_priority;
	__le16 qos_control;
	__le32 pkt_phys_addr;
	__le16 pkt_len;
1173
	__u8 dest_MAC_addr[ETH_ALEN];
1174
	__le32 next_txd_phys_addr;
1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189
	__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;

1190 1191 1192 1193
	memset(&txq->stats, 0, sizeof(struct ieee80211_tx_queue_stats));
	txq->stats.limit = MWL8K_TX_DESCS;
	txq->head = 0;
	txq->tail = 0;
1194 1195 1196

	size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);

1197 1198
	txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
	if (txq->txd == NULL) {
1199
		printk(KERN_ERR "%s: failed to alloc TX descriptors\n",
L
Lennert Buytenhek 已提交
1200
		       wiphy_name(hw->wiphy));
1201 1202
		return -ENOMEM;
	}
1203
	memset(txq->txd, 0, size);
1204

1205 1206
	txq->skb = kmalloc(MWL8K_TX_DESCS * sizeof(*txq->skb), GFP_KERNEL);
	if (txq->skb == NULL) {
1207
		printk(KERN_ERR "%s: failed to alloc TX skbuff list\n",
L
Lennert Buytenhek 已提交
1208
		       wiphy_name(hw->wiphy));
1209
		pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1210 1211
		return -ENOMEM;
	}
1212
	memset(txq->skb, 0, MWL8K_TX_DESCS * sizeof(*txq->skb));
1213 1214 1215 1216 1217

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

1218
		tx_desc = txq->txd + i;
1219 1220 1221
		nexti = (i + 1) % MWL8K_TX_DESCS;

		tx_desc->status = 0;
1222 1223
		tx_desc->next_txd_phys_addr =
			cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237
	}

	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);
}

1238
static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1239
{
1240 1241 1242 1243 1244 1245 1246 1247 1248 1249
	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;

1250
		for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1251 1252
			struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
			u32 status;
1253

1254
			status = le32_to_cpu(tx_desc->status);
1255
			if (status & MWL8K_TXD_STATUS_FW_OWNED)
1256
				fw_owned++;
1257
			else
1258
				drv_owned++;
1259 1260

			if (tx_desc->pkt_len == 0)
1261
				unused++;
1262 1263
		}

1264 1265 1266 1267 1268 1269
		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);
	}
1270 1271
}

1272
/*
1273
 * Must be called with priv->fw_mutex held and tx queues stopped.
1274
 */
1275 1276
#define MWL8K_TX_WAIT_TIMEOUT_MS	1000

1277
static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1278 1279
{
	struct mwl8k_priv *priv = hw->priv;
1280
	DECLARE_COMPLETION_ONSTACK(tx_wait);
1281 1282
	int retry;
	int rc;
1283 1284 1285

	might_sleep();

1286 1287 1288 1289 1290 1291 1292 1293 1294 1295
	/*
	 * 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;

1296
	spin_lock_bh(&priv->tx_lock);
1297 1298 1299 1300
	priv->tx_wait = &tx_wait;
	while (!rc) {
		int oldcount;
		unsigned long timeout;
1301

1302
		oldcount = priv->pending_tx_pkts;
1303

1304
		spin_unlock_bh(&priv->tx_lock);
1305
		timeout = wait_for_completion_timeout(&tx_wait,
1306
			    msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1307
		spin_lock_bh(&priv->tx_lock);
1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326

		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) {
			printk(KERN_NOTICE "%s: timeout waiting for tx "
			       "rings to drain (%d -> %d pkts), retrying\n",
			       wiphy_name(hw->wiphy), oldcount,
			       priv->pending_tx_pkts);
			retry = 1;
			continue;
		}

1327 1328
		priv->tx_wait = NULL;

1329 1330 1331 1332 1333
		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;
1334
	}
1335
	spin_unlock_bh(&priv->tx_lock);
1336

1337
	return rc;
1338 1339
}

1340 1341 1342 1343
#define MWL8K_TXD_SUCCESS(status)				\
	((status) & (MWL8K_TXD_STATUS_OK |			\
		     MWL8K_TXD_STATUS_OK_RETRY |		\
		     MWL8K_TXD_STATUS_OK_MORE_RETRY))
1344 1345 1346 1347 1348 1349 1350

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;

1351
	while (txq->stats.len > 0) {
1352 1353 1354
		int tx;
		struct mwl8k_tx_desc *tx_desc;
		unsigned long addr;
1355
		int size;
1356 1357 1358 1359
		struct sk_buff *skb;
		struct ieee80211_tx_info *info;
		u32 status;

1360 1361
		tx = txq->head;
		tx_desc = txq->txd + tx;
1362 1363 1364 1365 1366 1367 1368 1369 1370 1371

		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);
		}

1372 1373 1374
		txq->head = (tx + 1) % MWL8K_TX_DESCS;
		BUG_ON(txq->stats.len == 0);
		txq->stats.len--;
1375 1376 1377
		priv->pending_tx_pkts--;

		addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1378
		size = le16_to_cpu(tx_desc->pkt_len);
1379 1380
		skb = txq->skb[tx];
		txq->skb[tx] = NULL;
1381 1382 1383 1384

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

1385
		mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1386 1387 1388 1389 1390 1391 1392

		/* 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);
1393
		if (MWL8K_TXD_SUCCESS(status))
1394 1395 1396 1397
			info->flags |= IEEE80211_TX_STAT_ACK;

		ieee80211_tx_status_irqsafe(hw, skb);

1398
		wake = 1;
1399 1400
	}

1401
	if (wake && priv->radio_on && !mutex_is_locked(&priv->fw_mutex))
1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412
		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);

1413 1414
	kfree(txq->skb);
	txq->skb = NULL;
1415 1416 1417

	pci_free_consistent(priv->pdev,
			    MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1418 1419
			    txq->txd, txq->txd_dma);
	txq->txd = NULL;
1420 1421 1422 1423 1424 1425 1426
}

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;
1427
	struct mwl8k_vif *mwl8k_vif;
1428 1429 1430 1431
	struct ieee80211_hdr *wh;
	struct mwl8k_tx_queue *txq;
	struct mwl8k_tx_desc *tx;
	dma_addr_t dma;
1432 1433 1434
	u32 txstatus;
	u8 txdatarate;
	u16 qos;
1435

1436 1437 1438 1439 1440
	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;
1441

1442
	mwl8k_add_dma_header(skb);
1443
	wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1444 1445 1446 1447 1448 1449

	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;
1450

1451 1452 1453 1454 1455
		wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
		wh->seq_ctrl |= cpu_to_le16(seqno << 4);
		mwl8k_vif->seqno = seqno++ % 4096;
	}

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
	/* 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;
		qos = mwl8k_qos_setbit_eosp(qos);
		/* Set Queue size to unspecified */
		qos = mwl8k_qos_setbit_qlen(qos, 0xff);
	} else if (ieee80211_is_data(wh->frame_control)) {
		txdatarate = 1;
		if (is_multicast_ether_addr(wh->addr1))
			txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;

		/* Send pkt in an aggregate if AMPDU frame.  */
		if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
			qos = mwl8k_qos_setbit_ack(qos,
				MWL8K_TXD_ACK_POLICY_BLOCKACK);
		else
			qos = mwl8k_qos_setbit_ack(qos,
				MWL8K_TXD_ACK_POLICY_NORMAL);

		if (qos & IEEE80211_QOS_CONTROL_A_MSDU_PRESENT)
			qos = mwl8k_qos_setbit_amsdu(qos);
	}
1481 1482 1483 1484 1485 1486

	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
1487
		       "dropping TX frame.\n", wiphy_name(hw->wiphy));
1488
		dev_kfree_skb(skb);
1489 1490 1491
		return NETDEV_TX_OK;
	}

1492
	spin_lock_bh(&priv->tx_lock);
1493

1494
	txq = priv->txq + index;
1495

1496 1497
	BUG_ON(txq->skb[txq->tail] != NULL);
	txq->skb[txq->tail] = skb;
1498

1499
	tx = txq->txd + txq->tail;
1500 1501
	tx->data_rate = txdatarate;
	tx->tx_priority = index;
1502 1503 1504
	tx->qos_control = cpu_to_le16(qos);
	tx->pkt_phys_addr = cpu_to_le32(dma);
	tx->pkt_len = cpu_to_le16(skb->len);
1505 1506
	tx->rate_info = 0;
	tx->peer_id = mwl8k_vif->peer_id;
1507
	wmb();
1508 1509
	tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);

1510 1511
	txq->stats.count++;
	txq->stats.len++;
1512 1513
	priv->pending_tx_pkts++;

1514 1515 1516
	txq->tail++;
	if (txq->tail == MWL8K_TX_DESCS)
		txq->tail = 0;
1517

1518
	if (txq->head == txq->tail)
1519 1520
		ieee80211_stop_queue(hw, index);

1521
	mwl8k_tx_start(priv);
1522 1523 1524 1525 1526 1527 1528

	spin_unlock_bh(&priv->tx_lock);

	return NETDEV_TX_OK;
}


1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582
/*
 * 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);
	}
}


1583 1584 1585 1586
/*
 * Command processing.
 */

1587 1588
/* Timeout firmware commands after 10s */
#define MWL8K_CMD_TIMEOUT_MS	10000
1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600

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
1601
	cmd->result = 0xffff;
1602 1603 1604 1605 1606 1607
	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;

1608
	rc = mwl8k_fw_lock(hw);
1609 1610 1611
	if (rc) {
		pci_unmap_single(priv->pdev, dma_addr, dma_size,
						PCI_DMA_BIDIRECTIONAL);
1612
		return rc;
1613
	}
1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624

	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));

1625 1626 1627 1628
	priv->hostcmd_wait = NULL;

	mwl8k_fw_unlock(hw);

1629 1630 1631
	pci_unmap_single(priv->pdev, dma_addr, dma_size,
					PCI_DMA_BIDIRECTIONAL);

1632 1633
	if (!timeout) {
		printk(KERN_ERR "%s: Command %s timeout after %u ms\n",
L
Lennert Buytenhek 已提交
1634
		       wiphy_name(hw->wiphy),
1635 1636 1637 1638
		       mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
		       MWL8K_CMD_TIMEOUT_MS);
		rc = -ETIMEDOUT;
	} else {
1639 1640 1641 1642
		int ms;

		ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);

1643
		rc = cmd->result ? -EINVAL : 0;
1644 1645
		if (rc)
			printk(KERN_ERR "%s: Command %s error 0x%x\n",
L
Lennert Buytenhek 已提交
1646
			       wiphy_name(hw->wiphy),
1647
			       mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1648
			       le16_to_cpu(cmd->result));
1649 1650 1651 1652 1653
		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);
1654 1655 1656 1657 1658 1659
	}

	return rc;
}

/*
1660
 * CMD_GET_HW_SPEC (STA version).
1661
 */
1662
struct mwl8k_cmd_get_hw_spec_sta {
1663 1664 1665 1666
	struct mwl8k_cmd_pkt header;
	__u8 hw_rev;
	__u8 host_interface;
	__le16 num_mcaddrs;
1667
	__u8 perm_addr[ETH_ALEN];
1668 1669 1670 1671 1672 1673 1674 1675 1676 1677
	__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;
1678
	__le32 total_rxd;
1679 1680
} __attribute__((packed));

1681
static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
1682 1683
{
	struct mwl8k_priv *priv = hw->priv;
1684
	struct mwl8k_cmd_get_hw_spec_sta *cmd;
1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696
	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);
1697
	cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
1698
	cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES);
1699
	for (i = 0; i < MWL8K_TX_QUEUES; i++)
1700
		cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
1701
	cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
1702
	cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
1703 1704 1705 1706 1707 1708

	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);
1709
		priv->fw_rev = le32_to_cpu(cmd->fw_rev);
1710 1711 1712 1713 1714 1715 1716
		priv->hw_rev = cmd->hw_rev;
	}

	kfree(cmd);
	return rc;
}

1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839
/*
 * 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;
}

1840 1841 1842 1843 1844 1845 1846
/*
 * CMD_MAC_MULTICAST_ADR.
 */
struct mwl8k_cmd_mac_multicast_adr {
	struct mwl8k_cmd_pkt header;
	__le16 action;
	__le16 numaddr;
1847
	__u8 addr[0][ETH_ALEN];
1848 1849
};

1850 1851 1852 1853
#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
1854

1855
static struct mwl8k_cmd_pkt *
L
Lennert Buytenhek 已提交
1856
__mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
1857
			      int mc_count, struct dev_addr_list *mclist)
1858
{
1859
	struct mwl8k_priv *priv = hw->priv;
1860
	struct mwl8k_cmd_mac_multicast_adr *cmd;
1861 1862
	int size;

L
Lennert Buytenhek 已提交
1863
	if (allmulti || mc_count > priv->num_mcaddrs) {
1864 1865 1866
		allmulti = 1;
		mc_count = 0;
	}
1867 1868

	size = sizeof(*cmd) + mc_count * ETH_ALEN;
1869

1870
	cmd = kzalloc(size, GFP_ATOMIC);
1871
	if (cmd == NULL)
1872
		return NULL;
1873 1874 1875

	cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
	cmd->header.length = cpu_to_le16(size);
1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892
	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;
1893 1894 1895
		}
	}

1896
	return &cmd->header;
1897 1898 1899
}

/*
1900
 * CMD_GET_STAT.
1901
 */
1902
struct mwl8k_cmd_get_stat {
1903 1904 1905 1906 1907 1908 1909 1910 1911
	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

1912 1913
static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
			      struct ieee80211_low_level_stats *stats)
1914
{
1915
	struct mwl8k_cmd_get_stat *cmd;
1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941
	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;
}

/*
1942
 * CMD_RADIO_CONTROL.
1943
 */
1944
struct mwl8k_cmd_radio_control {
1945 1946 1947 1948 1949 1950
	struct mwl8k_cmd_pkt header;
	__le16 action;
	__le16 control;
	__le16 radio_on;
} __attribute__((packed));

1951
static int
1952
mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
1953 1954
{
	struct mwl8k_priv *priv = hw->priv;
1955
	struct mwl8k_cmd_radio_control *cmd;
1956 1957
	int rc;

1958
	if (enable == priv->radio_on && !force)
1959 1960 1961 1962 1963 1964 1965 1966 1967
		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);
1968
	cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
1969 1970 1971 1972 1973 1974
	cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);

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

	if (!rc)
1975
		priv->radio_on = enable;
1976 1977 1978 1979

	return rc;
}

1980
static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
1981
{
1982
	return mwl8k_cmd_radio_control(hw, 0, 0);
1983 1984
}

1985
static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
1986
{
1987
	return mwl8k_cmd_radio_control(hw, 1, 0);
1988 1989
}

1990 1991 1992 1993 1994 1995 1996 1997 1998
static int
mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
{
	struct mwl8k_priv *priv;

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

1999
	priv->radio_short_preamble = short_preamble;
2000

2001
	return mwl8k_cmd_radio_control(hw, 1, 1);
2002 2003 2004
}

/*
2005
 * CMD_RF_TX_POWER.
2006 2007 2008
 */
#define MWL8K_TX_POWER_LEVEL_TOTAL	8

2009
struct mwl8k_cmd_rf_tx_power {
2010 2011 2012 2013 2014 2015 2016 2017
	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));

2018
static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2019
{
2020
	struct mwl8k_cmd_rf_tx_power *cmd;
2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037
	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;
}

2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070
/*
 * 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;
}

2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101
/*
 * 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;
2102
	__u8 bssid[ETH_ALEN];
2103 2104 2105
} __attribute__((packed));

static int
2106
mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, __u8 *mac)
2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117
{
	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;
2118
	memcpy(cmd->bssid, mac, ETH_ALEN);
2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161

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

	return rc;
}

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

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

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

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

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

	return rc;
}

/*
2162
 * CMD_SET_AID.
2163
 */
2164 2165 2166 2167
#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
2168

2169 2170 2171
struct mwl8k_cmd_update_set_aid {
	struct	mwl8k_cmd_pkt header;
	__le16	aid;
2172

2173 2174 2175 2176
	 /* AP's MAC address (BSSID) */
	__u8	bssid[ETH_ALEN];
	__le16	protection_mode;
	__u8	supp_rates[14];
2177 2178
} __attribute__((packed));

2179 2180
static int
mwl8k_cmd_set_aid(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
2181
{
2182 2183 2184 2185
	struct mwl8k_vif *mv_vif = MWL8K_VIF(vif);
	struct ieee80211_bss_conf *info = &mv_vif->bss_info;
	struct mwl8k_cmd_update_set_aid *cmd;
	u16 prot_mode;
2186 2187 2188 2189 2190 2191
	int rc;

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

2192
	cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
2193
	cmd->header.length = cpu_to_le16(sizeof(*cmd));
2194
	cmd->aid = cpu_to_le16(info->aid);
2195

2196
	memcpy(cmd->bssid, mv_vif->bssid, ETH_ALEN);
2197

2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214
	if (info->use_cts_prot) {
		prot_mode = MWL8K_FRAME_PROT_11G;
	} else {
		switch (info->ht_operation_mode &
			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);
2215

2216
	memcpy(cmd->supp_rates, mwl8k_rateids, sizeof(mwl8k_rateids));
2217 2218 2219 2220 2221 2222 2223

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

	return rc;
}

2224
/*
2225
 * CMD_SET_RATE.
2226
 */
2227 2228 2229 2230 2231 2232 2233
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];
2234 2235
} __attribute__((packed));

2236 2237
static int
mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
2238
{
2239
	struct mwl8k_cmd_set_rate *cmd;
2240 2241 2242 2243 2244 2245
	int rc;

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

2246
	cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
2247
	cmd->header.length = cpu_to_le16(sizeof(*cmd));
2248
	memcpy(cmd->legacy_rates, mwl8k_rateids, sizeof(mwl8k_rateids));
2249 2250 2251 2252 2253 2254 2255

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

	return rc;
}

2256
/*
2257
 * CMD_FINALIZE_JOIN.
2258
 */
2259 2260 2261
#define MWL8K_FJ_BEACON_MAXLEN	128

struct mwl8k_cmd_finalize_join {
2262
	struct mwl8k_cmd_pkt header;
2263 2264
	__le32 sleep_interval;	/* Number of beacon periods to sleep */
	__u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
2265 2266
} __attribute__((packed));

2267 2268
static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
				   int framelen, int dtim)
2269
{
2270 2271 2272
	struct mwl8k_cmd_finalize_join *cmd;
	struct ieee80211_mgmt *payload = frame;
	int payload_len;
2273 2274 2275 2276 2277 2278
	int rc;

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

2279
	cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
2280
	cmd->header.length = cpu_to_le16(sizeof(*cmd));
2281 2282 2283 2284 2285 2286 2287 2288 2289
	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);
2290 2291 2292 2293 2294 2295 2296 2297

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

	return rc;
}

/*
2298
 * CMD_SET_RTS_THRESHOLD.
2299
 */
2300
struct mwl8k_cmd_set_rts_threshold {
2301 2302
	struct mwl8k_cmd_pkt header;
	__le16 action;
2303
	__le16 threshold;
2304 2305
} __attribute__((packed));

2306 2307
static int mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw,
				       u16 action, u16 threshold)
2308
{
2309
	struct mwl8k_cmd_set_rts_threshold *cmd;
2310 2311 2312 2313 2314 2315
	int rc;

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

2316
	cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
2317
	cmd->header.length = cpu_to_le16(sizeof(*cmd));
2318 2319
	cmd->action = cpu_to_le16(action);
	cmd->threshold = cpu_to_le16(threshold);
2320 2321 2322 2323 2324 2325 2326 2327

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

	return rc;
}

/*
2328
 * CMD_SET_SLOT.
2329
 */
2330
struct mwl8k_cmd_set_slot {
2331 2332
	struct mwl8k_cmd_pkt header;
	__le16 action;
2333
	__u8 short_slot;
2334 2335
} __attribute__((packed));

2336
static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
2337
{
2338
	struct mwl8k_cmd_set_slot *cmd;
2339 2340 2341 2342 2343 2344
	int rc;

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

2345
	cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
2346
	cmd->header.length = cpu_to_le16(sizeof(*cmd));
2347 2348
	cmd->action = cpu_to_le16(MWL8K_CMD_SET);
	cmd->short_slot = short_slot_time;
2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367

	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;

2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384
	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;
2385

2386 2387
			/* Log exponent of min contention period: 0...15 */
			__u8 log_cw_min;
2388

2389 2390
			/* Adaptive interframe spacing in units of 32us */
			__u8 aifs;
2391

2392 2393 2394 2395
			/* TX queue to configure */
			__u8 txq;
		} sta;
	};
2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406
} __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
2407 2408 2409
mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
			  __u16 cw_min, __u16 cw_max,
			  __u8 aifs, __u16 txop)
2410
{
2411
	struct mwl8k_priv *priv = hw->priv;
2412 2413 2414 2415 2416 2417 2418
	struct mwl8k_cmd_set_edca_params *cmd;
	int rc;

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

2419 2420 2421 2422 2423 2424
	/*
	 * Queues 0 (BE) and 1 (BK) are swapped in hardware for
	 * this call.
	 */
	qnum ^= !(qnum >> 1);

2425 2426 2427 2428
	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);
2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439
	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;
	}
2440 2441 2442 2443 2444 2445 2446 2447

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

	return rc;
}

/*
2448
 * CMD_SET_WMM_MODE.
2449
 */
2450
struct mwl8k_cmd_set_wmm_mode {
2451
	struct mwl8k_cmd_pkt header;
2452
	__le16 action;
2453 2454
} __attribute__((packed));

2455
static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
2456
{
2457 2458
	struct mwl8k_priv *priv = hw->priv;
	struct mwl8k_cmd_set_wmm_mode *cmd;
2459 2460 2461 2462 2463 2464
	int rc;

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

2465
	cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
2466
	cmd->header.length = cpu_to_le16(sizeof(*cmd));
2467
	cmd->action = cpu_to_le16(!!enable);
2468 2469 2470

	rc = mwl8k_post_cmd(hw, &cmd->header);
	kfree(cmd);
2471

2472 2473
	if (!rc)
		priv->wmm_enabled = enable;
2474 2475 2476 2477 2478

	return rc;
}

/*
2479
 * CMD_MIMO_CONFIG.
2480
 */
2481 2482 2483 2484 2485
struct mwl8k_cmd_mimo_config {
	struct mwl8k_cmd_pkt header;
	__le32 action;
	__u8 rx_antenna_map;
	__u8 tx_antenna_map;
2486 2487
} __attribute__((packed));

2488
static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
2489
{
2490
	struct mwl8k_cmd_mimo_config *cmd;
2491 2492 2493 2494 2495 2496
	int rc;

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

2497
	cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
2498
	cmd->header.length = cpu_to_le16(sizeof(*cmd));
2499 2500 2501
	cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
	cmd->rx_antenna_map = rx;
	cmd->tx_antenna_map = tx;
2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565

	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
2566 2567 2568 2569
		/*
		 * Copy over each field manually so that endian
		 * conversion can be done.
		 */
2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593
		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;
}

2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 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 2750 2751 2752 2753 2754 2755 2756
/*
 * 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.
 */
struct mwl8k_cmd_update_stadb {
	struct mwl8k_cmd_pkt header;

	/* See STADB_ACTION_TYPE */
	__le32	action;

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

	__le32	reserved;

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

static int mwl8k_cmd_update_stadb(struct ieee80211_hw *hw,
		struct ieee80211_vif *vif, __u32 action)
{
	struct mwl8k_vif *mv_vif = MWL8K_VIF(vif);
	struct ieee80211_bss_conf *info = &mv_vif->bss_info;
	struct mwl8k_cmd_update_stadb *cmd;
	struct peer_capability_info *peer_info;
	int rc;

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

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

	cmd->action = cpu_to_le32(action);
	peer_info = &cmd->peer_info;
	memcpy(cmd->peer_addr, mv_vif->bssid, ETH_ALEN);

	switch (action) {
	case MWL8K_STA_DB_ADD_ENTRY:
	case MWL8K_STA_DB_MODIFY_ENTRY:
		/* Build peer_info block */
		peer_info->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
		peer_info->basic_caps = cpu_to_le16(info->assoc_capability);
		memcpy(peer_info->legacy_rates, mwl8k_rateids,
		       sizeof(mwl8k_rateids));
		peer_info->interop = 1;
		peer_info->amsdu_enabled = 0;

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

		break;

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

	return rc;
}

2757 2758 2759 2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781

/*
 * 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) {
2782
		if (priv->hostcmd_wait != NULL)
2783 2784 2785 2786
			complete(priv->hostcmd_wait);
	}

	if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
2787
		if (!mutex_is_locked(&priv->fw_mutex) &&
2788
		    priv->radio_on && priv->pending_tx_pkts)
2789
			mwl8k_tx_start(priv);
2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806
	}

	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
2807
		       "disabled\n", wiphy_name(hw->wiphy));
2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821
		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;

2822
	rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
2823 2824 2825
			 IRQF_SHARED, MWL8K_NAME, hw);
	if (rc) {
		printk(KERN_ERR "%s: failed to register IRQ handler\n",
L
Lennert Buytenhek 已提交
2826
		       wiphy_name(hw->wiphy));
2827
		return -EIO;
2828 2829
	}

2830 2831 2832
	/* Enable tx reclaim tasklet */
	tasklet_enable(&priv->tx_reclaim_task);

2833
	/* Enable interrupts */
2834
	iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
2835

2836 2837
	rc = mwl8k_fw_lock(hw);
	if (!rc) {
2838
		rc = mwl8k_cmd_radio_enable(hw);
2839

2840 2841
		if (!priv->ap_fw) {
			if (!rc)
2842
				rc = mwl8k_cmd_enable_sniffer(hw, 0);
2843

2844 2845 2846 2847 2848 2849 2850
			if (!rc)
				rc = mwl8k_cmd_set_pre_scan(hw);

			if (!rc)
				rc = mwl8k_cmd_set_post_scan(hw,
						"\x00\x00\x00\x00\x00\x00");
		}
2851 2852

		if (!rc)
2853
			rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
2854

2855
		if (!rc)
2856
			rc = mwl8k_cmd_set_wmm_mode(hw, 0);
2857

2858 2859 2860 2861 2862 2863 2864 2865
		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);
	}
2866 2867 2868 2869 2870 2871 2872 2873 2874

	return rc;
}

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

2875
	mwl8k_cmd_radio_disable(hw);
2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910

	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,
				struct ieee80211_if_init_conf *conf)
{
	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.
	 */
2911
	if (conf->type != NL80211_IFTYPE_STATION)
2912 2913
		return -EINVAL;

2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925
	/*
	 * 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;
	}

2926 2927 2928 2929
	/* Clean out driver private area */
	mwl8k_vif = MWL8K_VIF(conf->vif);
	memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));

2930
	/* Set and save the mac address */
2931
	mwl8k_cmd_set_mac_addr(hw, conf->mac_addr);
2932
	memcpy(mwl8k_vif->mac_addr, conf->mac_addr, ETH_ALEN);
2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953

	/* Back pointer to parent config block */
	mwl8k_vif->priv = priv;

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

	priv->vif = conf->vif;
	priv->current_channel = NULL;

	return 0;
}

static void mwl8k_remove_interface(struct ieee80211_hw *hw,
				   struct ieee80211_if_init_conf *conf)
{
	struct mwl8k_priv *priv = hw->priv;

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

2954
	mwl8k_cmd_set_mac_addr(hw, "\x00\x00\x00\x00\x00\x00");
2955

2956 2957 2958
	priv->vif = NULL;
}

2959
static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
2960 2961 2962
{
	struct ieee80211_conf *conf = &hw->conf;
	struct mwl8k_priv *priv = hw->priv;
2963
	int rc;
2964

L
Lennert Buytenhek 已提交
2965
	if (conf->flags & IEEE80211_CONF_IDLE) {
2966
		mwl8k_cmd_radio_disable(hw);
L
Lennert Buytenhek 已提交
2967
		priv->current_channel = NULL;
2968
		return 0;
L
Lennert Buytenhek 已提交
2969 2970
	}

2971 2972 2973
	rc = mwl8k_fw_lock(hw);
	if (rc)
		return rc;
2974

2975
	rc = mwl8k_cmd_radio_enable(hw);
2976 2977
	if (rc)
		goto out;
2978

2979 2980 2981 2982 2983
	rc = mwl8k_cmd_set_rf_channel(hw, conf->channel);
	if (rc)
		goto out;

	priv->current_channel = conf->channel;
2984 2985 2986

	if (conf->power_level > 18)
		conf->power_level = 18;
2987
	rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
2988 2989
	if (rc)
		goto out;
2990

2991 2992 2993 2994 2995 2996 2997
	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);
	}
2998

2999 3000
out:
	mwl8k_fw_unlock(hw);
3001

3002
	return rc;
3003 3004
}

3005 3006 3007 3008
static void mwl8k_bss_info_changed(struct ieee80211_hw *hw,
				   struct ieee80211_vif *vif,
				   struct ieee80211_bss_conf *info,
				   u32 changed)
3009 3010 3011
{
	struct mwl8k_priv *priv = hw->priv;
	struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3012 3013 3014 3015
	int rc;

	if ((changed & BSS_CHANGED_ASSOC) == 0)
		return;
3016 3017 3018

	priv->capture_beacon = false;

3019
	rc = mwl8k_fw_lock(hw);
3020
	if (rc)
3021 3022
		return;

3023 3024 3025 3026
	if (info->assoc) {
		memcpy(&mwl8k_vif->bss_info, info,
			sizeof(struct ieee80211_bss_conf));

3027 3028
		memcpy(mwl8k_vif->bssid, info->bssid, ETH_ALEN);

3029
		/* Install rates */
3030
		rc = mwl8k_cmd_set_rate(hw, vif);
3031 3032
		if (rc)
			goto out;
3033 3034

		/* Turn on rate adaptation */
3035 3036 3037 3038
		rc = mwl8k_cmd_use_fixed_rate(hw, MWL8K_USE_AUTO_RATE,
			MWL8K_UCAST_RATE, NULL);
		if (rc)
			goto out;
3039 3040

		/* Set radio preamble */
3041 3042 3043
		rc = mwl8k_set_radio_preamble(hw, info->use_short_preamble);
		if (rc)
			goto out;
3044 3045

		/* Set slot time */
3046 3047 3048
		rc = mwl8k_cmd_set_slot(hw, info->use_short_slot);
		if (rc)
			goto out;
3049 3050

		/* Update peer rate info */
3051
		rc = mwl8k_cmd_update_stadb(hw, vif,
3052 3053 3054
				MWL8K_STA_DB_MODIFY_ENTRY);
		if (rc)
			goto out;
3055 3056

		/* Set AID */
3057 3058 3059
		rc = mwl8k_cmd_set_aid(hw, vif);
		if (rc)
			goto out;
3060 3061 3062 3063 3064

		/*
		 * Finalize the join.  Tell rx handler to process
		 * next beacon from our BSSID.
		 */
3065
		memcpy(priv->capture_bssid, mwl8k_vif->bssid, ETH_ALEN);
3066 3067
		priv->capture_beacon = true;
	} else {
3068
		rc = mwl8k_cmd_update_stadb(hw, vif, MWL8K_STA_DB_DEL_ENTRY);
3069 3070
		memset(&mwl8k_vif->bss_info, 0,
			sizeof(struct ieee80211_bss_conf));
3071
		memset(mwl8k_vif->bssid, 0, ETH_ALEN);
3072 3073
	}

3074 3075
out:
	mwl8k_fw_unlock(hw);
3076 3077
}

3078 3079 3080 3081 3082
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
3083 3084 3085 3086 3087 3088 3089 3090
	/*
	 * 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);
3091 3092 3093 3094

	return (unsigned long)cmd;
}

3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115
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) {
3116
		if (mwl8k_cmd_enable_sniffer(hw, 1))
3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127
			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;
}

3128 3129 3130 3131 3132 3133
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;
3134 3135
	struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;

3136 3137 3138 3139 3140 3141 3142 3143 3144 3145
	/*
	 * 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;
	}

3146 3147 3148 3149 3150 3151 3152 3153 3154
	/*
	 * 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;
	}
3155

3156
	/* Clear unsupported feature flags */
L
Lennert Buytenhek 已提交
3157
	*total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
3158

3159 3160
	if (mwl8k_fw_lock(hw))
		return;
3161

3162
	if (priv->sniffer_enabled) {
3163
		mwl8k_cmd_enable_sniffer(hw, 0);
3164 3165 3166
		priv->sniffer_enabled = false;
	}

3167
	if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
3168 3169 3170 3171
		if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
			/*
			 * Disable the BSS filter.
			 */
3172
			mwl8k_cmd_set_pre_scan(hw);
3173
		} else {
3174 3175
			u8 *bssid;

3176 3177 3178 3179 3180 3181 3182 3183 3184
			/*
			 * 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";
3185 3186 3187
			if (priv->vif != NULL)
				bssid = MWL8K_VIF(priv->vif)->bssid;

3188
			mwl8k_cmd_set_post_scan(hw, bssid);
3189 3190 3191
		}
	}

L
Lennert Buytenhek 已提交
3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205
	/*
	 * 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);
3206
	}
3207

3208
	mwl8k_fw_unlock(hw);
3209 3210 3211 3212
}

static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
{
3213
	return mwl8k_cmd_set_rts_threshold(hw, MWL8K_CMD_SET, value);
3214 3215 3216 3217 3218
}

static int mwl8k_conf_tx(struct ieee80211_hw *hw, u16 queue,
			 const struct ieee80211_tx_queue_params *params)
{
3219
	struct mwl8k_priv *priv = hw->priv;
3220 3221
	int rc;

3222 3223 3224
	rc = mwl8k_fw_lock(hw);
	if (!rc) {
		if (!priv->wmm_enabled)
3225
			rc = mwl8k_cmd_set_wmm_mode(hw, 1);
3226

3227
		if (!rc)
3228 3229 3230 3231 3232
			rc = mwl8k_cmd_set_edca_params(hw, queue,
						       params->cw_min,
						       params->cw_max,
						       params->aifs,
						       params->txop);
3233 3234

		mwl8k_fw_unlock(hw);
3235
	}
3236

3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249
	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;
3250
		memcpy(&stats[index], &txq->stats,
3251 3252 3253 3254
			sizeof(struct ieee80211_tx_queue_stats));
	}
	spin_unlock_bh(&priv->tx_lock);

3255
	return 0;
3256 3257 3258 3259 3260
}

static int mwl8k_get_stats(struct ieee80211_hw *hw,
			   struct ieee80211_low_level_stats *stats)
{
3261
	return mwl8k_cmd_get_stat(hw, stats);
3262 3263 3264 3265 3266 3267 3268 3269 3270 3271
}

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,
3272
	.prepare_multicast	= mwl8k_prepare_multicast,
3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289
	.configure_filter	= mwl8k_configure_filter,
	.set_rts_threshold	= mwl8k_set_rts_threshold,
	.conf_tx		= mwl8k_conf_tx,
	.get_tx_stats		= mwl8k_get_tx_stats,
	.get_stats		= mwl8k_get_stats,
};

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

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

3290
	if (priv->tx_wait != NULL && !priv->pending_tx_pkts) {
3291 3292
		complete(priv->tx_wait);
		priv->tx_wait = NULL;
3293 3294 3295 3296 3297 3298 3299 3300 3301
	}
	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;
3302
	u8 dtim = MWL8K_VIF(priv->vif)->bss_info.dtim_period;
3303

3304
	mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim);
3305 3306 3307 3308 3309
	dev_kfree_skb(skb);

	priv->beacon_skb = NULL;
}

3310 3311 3312
enum {
	MWL8687 = 0,
	MWL8366,
3313 3314
};

3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329
static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = {
	{
		.part_name	= "88w8687",
		.helper_image	= "mwl8k/helper_8687.fw",
		.fw_image	= "mwl8k/fmimage_8687.fw",
		.rxd_ops	= &rxd_8687_ops,
		.modes		= BIT(NL80211_IFTYPE_STATION),
	},
	{
		.part_name	= "88w8366",
		.helper_image	= "mwl8k/helper_8366.fw",
		.fw_image	= "mwl8k/fmimage_8366.fw",
		.rxd_ops	= &rxd_8366_ops,
		.modes		= 0,
	},
3330 3331 3332
};

static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
3333 3334 3335 3336
	{ PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
	{ PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
	{ PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
	{ },
3337 3338 3339
};
MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);

3340 3341 3342
static int __devinit mwl8k_probe(struct pci_dev *pdev,
				 const struct pci_device_id *id)
{
3343
	static int printed_version = 0;
3344 3345 3346 3347
	struct ieee80211_hw *hw;
	struct mwl8k_priv *priv;
	int rc;
	int i;
3348 3349 3350 3351 3352

	if (!printed_version) {
		printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
		printed_version = 1;
	}
3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364

	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);
3365
		goto err_disable_device;
3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379
	}

	pci_set_master(pdev);

	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;
	}

	priv = hw->priv;
	priv->hw = hw;
	priv->pdev = pdev;
3380
	priv->device_info = &mwl8k_info_tbl[id->driver_data];
3381
	priv->rxd_ops = priv->device_info->rxd_ops;
3382
	priv->sniffer_enabled = false;
3383
	priv->wmm_enabled = false;
3384 3385 3386 3387 3388
	priv->pending_tx_pkts = 0;

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

L
Lennert Buytenhek 已提交
3389 3390 3391
	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
3392
		       wiphy_name(hw->wiphy));
3393 3394 3395
		goto err_iounmap;
	}

L
Lennert Buytenhek 已提交
3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409
	/*
	 * 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;
		}
	}

3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431
	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;

3432
	hw->wiphy->interface_modes = priv->device_info->modes;
3433 3434

	/* Set rssi and noise values to dBm */
3435
	hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_NOISE_DBM;
3436 3437 3438 3439
	hw->vif_data_size = sizeof(struct mwl8k_vif);
	priv->vif = NULL;

	/* Set default radio state and preamble */
3440
	priv->radio_on = 0;
3441
	priv->radio_short_preamble = 0;
3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460

	/* 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)
		goto err_iounmap;

	rc = mwl8k_rxq_init(hw, 0);
	if (rc)
		goto err_iounmap;
	rxq_refill(hw, 0, INT_MAX);

3461 3462 3463 3464 3465
	mutex_init(&priv->fw_mutex);
	priv->fw_mutex_owner = NULL;
	priv->fw_mutex_depth = 0;
	priv->hostcmd_wait = NULL;

3466 3467
	spin_lock_init(&priv->tx_lock);

3468 3469
	priv->tx_wait = NULL;

3470 3471 3472 3473 3474 3475 3476
	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);
3477
	iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3478 3479 3480
	iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
	iowrite32(0xffffffff, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);

3481
	rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
3482 3483 3484
			 IRQF_SHARED, MWL8K_NAME, hw);
	if (rc) {
		printk(KERN_ERR "%s: failed to register IRQ handler\n",
L
Lennert Buytenhek 已提交
3485
		       wiphy_name(hw->wiphy));
3486 3487 3488 3489 3490 3491 3492
		goto err_free_queues;
	}

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

	/* Ask userland hotplug daemon for the device firmware */
3493
	rc = mwl8k_request_firmware(priv);
3494
	if (rc) {
L
Lennert Buytenhek 已提交
3495 3496
		printk(KERN_ERR "%s: Firmware files not found\n",
		       wiphy_name(hw->wiphy));
3497 3498 3499 3500
		goto err_free_irq;
	}

	/* Load firmware into hardware */
L
Lennert Buytenhek 已提交
3501
	rc = mwl8k_load_firmware(hw);
3502
	if (rc) {
L
Lennert Buytenhek 已提交
3503 3504
		printk(KERN_ERR "%s: Cannot start firmware\n",
		       wiphy_name(hw->wiphy));
3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515
		goto err_stop_firmware;
	}

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

	/*
	 * Temporarily enable interrupts.  Initial firmware host
	 * commands use interrupts and avoids polling.  Disable
	 * interrupts when done.
	 */
3516
	iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3517 3518

	/* Get config data, mac addrs etc */
3519 3520 3521 3522 3523 3524 3525
	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);
	}
3526
	if (rc) {
L
Lennert Buytenhek 已提交
3527 3528
		printk(KERN_ERR "%s: Cannot initialise firmware\n",
		       wiphy_name(hw->wiphy));
3529 3530 3531 3532
		goto err_stop_firmware;
	}

	/* Turn radio off */
3533
	rc = mwl8k_cmd_radio_disable(hw);
3534
	if (rc) {
L
Lennert Buytenhek 已提交
3535
		printk(KERN_ERR "%s: Cannot disable\n", wiphy_name(hw->wiphy));
3536 3537 3538
		goto err_stop_firmware;
	}

3539
	/* Clear MAC address */
3540
	rc = mwl8k_cmd_set_mac_addr(hw, "\x00\x00\x00\x00\x00\x00");
3541 3542 3543 3544 3545 3546
	if (rc) {
		printk(KERN_ERR "%s: Cannot clear MAC address\n",
		       wiphy_name(hw->wiphy));
		goto err_stop_firmware;
	}

3547 3548 3549 3550 3551 3552
	/* 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
3553 3554
		printk(KERN_ERR "%s: Cannot register device\n",
		       wiphy_name(hw->wiphy));
3555 3556 3557
		goto err_stop_firmware;
	}

3558
	printk(KERN_INFO "%s: %s v%d, %pM, %s firmware %u.%u.%u.%u\n",
3559
	       wiphy_name(hw->wiphy), priv->device_info->part_name,
3560
	       priv->hw_rev, hw->wiphy->perm_addr,
3561
	       priv->ap_fw ? "AP" : "STA",
3562 3563
	       (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
	       (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587

	return 0;

err_stop_firmware:
	mwl8k_hw_reset(priv);
	mwl8k_release_firmware(priv);

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);

err_iounmap:
	if (priv->cookie != NULL)
		pci_free_consistent(priv->pdev, 4,
				priv->cookie, priv->cookie_dma);

	if (priv->regs != NULL)
		pci_iounmap(pdev, priv->regs);

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

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

err_free_reg:
	pci_release_regions(pdev);
3596 3597

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

	return rc;
}

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

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

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

	ieee80211_stop_queues(hw);

3620 3621
	ieee80211_unregister_hw(hw);

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

	/* Stop hardware */
	mwl8k_hw_reset(priv);

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

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

	mwl8k_rxq_deinit(hw, 0);

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

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

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

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

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

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

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