summaryrefslogtreecommitdiffstats
path: root/drivers/staging/bcm/Bcmnet.c
blob: 6e8c7f5232148db9110141475351f991addb6b30 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
#include "headers.h"

struct net_device *gblpnetdev;

static INT bcm_open(struct net_device *dev)
{
	struct bcm_mini_adapter *Adapter = GET_BCM_ADAPTER(dev);

	if (Adapter->fw_download_done == FALSE) {
		pr_notice(PFX "%s: link up failed (download in progress)\n",
			  dev->name);
		return -EBUSY;
	}

	if (netif_msg_ifup(Adapter))
		pr_info(PFX "%s: enabling interface\n", dev->name);

	if (Adapter->LinkUpStatus) {
		if (netif_msg_link(Adapter))
			pr_info(PFX "%s: link up\n", dev->name);

		netif_carrier_on(Adapter->dev);
		netif_start_queue(Adapter->dev);
	}

	return 0;
}

static INT bcm_close(struct net_device *dev)
{
	struct bcm_mini_adapter *Adapter = GET_BCM_ADAPTER(dev);

	if (netif_msg_ifdown(Adapter))
		pr_info(PFX "%s: disabling interface\n", dev->name);

	netif_carrier_off(dev);
	netif_stop_queue(dev);

	return 0;
}

static u16 bcm_select_queue(struct net_device *dev, struct sk_buff *skb)
{
	return ClassifyPacket(netdev_priv(dev), skb);
}

/*******************************************************************
* Function    -	bcm_transmit()
*
* Description - This is the main transmit function for our virtual
*		interface(eth0). It handles the ARP packets. It
*		clones this packet and then Queue it to a suitable
*		Queue. Then calls the transmit_packet().
*
* Parameter   -	 skb - Pointer to the socket buffer structure
*		 dev - Pointer to the virtual net device structure
*
*********************************************************************/

static netdev_tx_t bcm_transmit(struct sk_buff *skb, struct net_device *dev)
{
	struct bcm_mini_adapter *Adapter = GET_BCM_ADAPTER(dev);
	u16 qindex = skb_get_queue_mapping(skb);


	if (Adapter->device_removed || !Adapter->LinkUpStatus)
		goto drop;

	if (Adapter->TransferMode != IP_PACKET_ONLY_MODE)
		goto drop;

	if (INVALID_QUEUE_INDEX == qindex)
		goto drop;

	if (Adapter->PackInfo[qindex].uiCurrentPacketsOnHost >=
	    SF_MAX_ALLOWED_PACKETS_TO_BACKUP)
		return NETDEV_TX_BUSY;

	/* Now Enqueue the packet */
	if (netif_msg_tx_queued(Adapter))
		pr_info(PFX "%s: enqueueing packet to queue %d\n",
			dev->name, qindex);

	spin_lock(&Adapter->PackInfo[qindex].SFQueueLock);
	Adapter->PackInfo[qindex].uiCurrentBytesOnHost += skb->len;
	Adapter->PackInfo[qindex].uiCurrentPacketsOnHost++;

	*((B_UINT32 *) skb->cb + SKB_CB_LATENCY_OFFSET) = jiffies;
	ENQUEUEPACKET(Adapter->PackInfo[qindex].FirstTxQueue,
		      Adapter->PackInfo[qindex].LastTxQueue, skb);
	atomic_inc(&Adapter->TotalPacketCount);
	spin_unlock(&Adapter->PackInfo[qindex].SFQueueLock);

	/* FIXME - this is racy and incorrect, replace with work queue */
	if (!atomic_read(&Adapter->TxPktAvail)) {
		atomic_set(&Adapter->TxPktAvail, 1);
		wake_up(&Adapter->tx_packet_wait_queue);
	}
	return NETDEV_TX_OK;

 drop:
	dev_kfree_skb(skb);
	return NETDEV_TX_OK;
}



/**
@ingroup init_functions
Register other driver entry points with the kernel
*/
static const struct net_device_ops bcmNetDevOps = {
	.ndo_open		= bcm_open,
	.ndo_stop		= bcm_close,
	.ndo_start_xmit	        = bcm_transmit,
	.ndo_change_mtu	        = eth_change_mtu,
	.ndo_set_mac_address    = eth_mac_addr,
	.ndo_validate_addr	= eth_validate_addr,
	.ndo_select_queue	= bcm_select_queue,
};

static struct device_type wimax_type = {
	.name	= "wimax",
};

static int bcm_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
	cmd->supported		= 0;
	cmd->advertising	= 0;
	cmd->speed		= SPEED_10000;
	cmd->duplex		= DUPLEX_FULL;
	cmd->port		= PORT_TP;
	cmd->phy_address	= 0;
	cmd->transceiver	= XCVR_INTERNAL;
	cmd->autoneg		= AUTONEG_DISABLE;
	cmd->maxtxpkt		= 0;
	cmd->maxrxpkt		= 0;
	return 0;
}

static void bcm_get_drvinfo(struct net_device *dev,
			    struct ethtool_drvinfo *info)
{
	struct bcm_mini_adapter *Adapter = GET_BCM_ADAPTER(dev);
	PS_INTERFACE_ADAPTER psIntfAdapter = Adapter->pvInterfaceAdapter;
	struct usb_device *udev = interface_to_usbdev(psIntfAdapter->interface);

	strcpy(info->driver, DRV_NAME);
	strcpy(info->version, DRV_VERSION);
	snprintf(info->fw_version, sizeof(info->fw_version), "%u.%u",
		 Adapter->uiFlashLayoutMajorVersion,
		 Adapter->uiFlashLayoutMinorVersion);

	usb_make_path(udev, info->bus_info, sizeof(info->bus_info));
}

static u32 bcm_get_link(struct net_device *dev)
{
	struct bcm_mini_adapter *Adapter = GET_BCM_ADAPTER(dev);

	return Adapter->LinkUpStatus;
}

static u32 bcm_get_msglevel(struct net_device *dev)
{
	struct bcm_mini_adapter *Adapter = GET_BCM_ADAPTER(dev);

	return Adapter->msg_enable;
}

static void bcm_set_msglevel(struct net_device *dev, u32 level)
{
	struct bcm_mini_adapter *Adapter = GET_BCM_ADAPTER(dev);

	Adapter->msg_enable = level;
}

static const struct ethtool_ops bcm_ethtool_ops = {
	.get_settings	= bcm_get_settings,
	.get_drvinfo	= bcm_get_drvinfo,
	.get_link	= bcm_get_link,
	.get_msglevel	= bcm_get_msglevel,
	.set_msglevel	= bcm_set_msglevel,
};

int register_networkdev(struct bcm_mini_adapter *Adapter)
{
	struct net_device *net = Adapter->dev;
	PS_INTERFACE_ADAPTER IntfAdapter = Adapter->pvInterfaceAdapter;
	struct usb_interface *udev = IntfAdapter->interface;
	struct usb_device *xdev = IntfAdapter->udev;

	int result;

	net->netdev_ops = &bcmNetDevOps;
	net->ethtool_ops = &bcm_ethtool_ops;
	net->mtu = MTU_SIZE;	/* 1400 Bytes */
	net->tx_queue_len = TX_QLEN;
	net->flags |= IFF_NOARP;

	netif_carrier_off(net);

	SET_NETDEV_DEVTYPE(net, &wimax_type);

	/* Read the MAC Address from EEPROM */
	result = ReadMacAddressFromNVM(Adapter);
	if (result != STATUS_SUCCESS) {
		dev_err(&udev->dev,
			PFX "Error in Reading the mac Address: %d", result);
		return -EIO;
	}

	result = register_netdev(net);
	if (result)
		return result;

	gblpnetdev = Adapter->dev;

	if (netif_msg_probe(Adapter))
		dev_info(&udev->dev, PFX "%s: register usb-%s-%s %pM\n",
			 net->name, xdev->bus->bus_name, xdev->devpath,
			 net->dev_addr);

	return 0;
}

void unregister_networkdev(struct bcm_mini_adapter *Adapter)
{
	struct net_device *net = Adapter->dev;
	PS_INTERFACE_ADAPTER IntfAdapter = Adapter->pvInterfaceAdapter;
	struct usb_interface *udev = IntfAdapter->interface;
	struct usb_device *xdev = IntfAdapter->udev;

	if (netif_msg_probe(Adapter))
		dev_info(&udev->dev, PFX "%s: unregister usb-%s%s\n",
			 net->name, xdev->bus->bus_name, xdev->devpath);

	unregister_netdev(Adapter->dev);
}