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1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 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 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 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option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software Foundation, * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * ****************************************************************/ /* TODO: * Fix in_interrupt() problem * Develop test procedures for USB net interfaces * Run test procedures * Fix bugs from previous two steps * Snoop other OSs for any tricks we're not doing * SMP locking * Reduce arbitrary timeouts * Smart multicast support * Temporary MAC change support * Tunable SOFs parameter - ioctl()? * Ethernet stats collection * Code formatting improvements */ #include <linux/module.h> #include <linux/sched.h> #include <linux/slab.h> #include <linux/string.h> #include <linux/init.h> #include <linux/delay.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/usb.h> #include <linux/types.h> #include <linux/ethtool.h> #include <linux/pci.h> #include <linux/dma-mapping.h> #include <linux/wait.h> #include <asm/uaccess.h> #include <asm/semaphore.h> #include <asm/byteorder.h> #undef DEBUG #ifdef DEBUG #define kaweth_dbg(format, arg...) printk(KERN_DEBUG __FILE__ ": " format "\n" ,##arg) #else #define kaweth_dbg(format, arg...) do {} while (0) #endif #define kaweth_err(format, arg...) printk(KERN_ERR __FILE__ ": " format "\n" ,##arg) #define kaweth_info(format, arg...) printk(KERN_INFO __FILE__ ": " format "\n" , ##arg) #define kaweth_warn(format, arg...) printk(KERN_WARNING __FILE__ ": " format "\n" , ##arg) #include "kawethfw.h" #define KAWETH_MTU 1514 #define KAWETH_BUF_SIZE 1664 #define KAWETH_TX_TIMEOUT (5 * HZ) #define KAWETH_SCRATCH_SIZE 32 #define KAWETH_FIRMWARE_BUF_SIZE 4096 #define KAWETH_CONTROL_TIMEOUT (30 * HZ) #define KAWETH_STATUS_BROKEN 0x0000001 #define KAWETH_STATUS_CLOSING 0x0000002 #define KAWETH_PACKET_FILTER_PROMISCUOUS 0x01 #define KAWETH_PACKET_FILTER_ALL_MULTICAST 0x02 #define KAWETH_PACKET_FILTER_DIRECTED 0x04 #define KAWETH_PACKET_FILTER_BROADCAST 0x08 #define KAWETH_PACKET_FILTER_MULTICAST 0x10 /* Table 7 */ #define KAWETH_COMMAND_GET_ETHERNET_DESC 0x00 #define KAWETH_COMMAND_MULTICAST_FILTERS 0x01 #define KAWETH_COMMAND_SET_PACKET_FILTER 0x02 #define KAWETH_COMMAND_STATISTICS 0x03 #define KAWETH_COMMAND_SET_TEMP_MAC 0x06 #define KAWETH_COMMAND_GET_TEMP_MAC 0x07 #define KAWETH_COMMAND_SET_URB_SIZE 0x08 #define KAWETH_COMMAND_SET_SOFS_WAIT 0x09 #define KAWETH_COMMAND_SCAN 0xFF #define KAWETH_SOFS_TO_WAIT 0x05 #define INTBUFFERSIZE 4 #define STATE_OFFSET 0 #define STATE_MASK 0x40 #define STATE_SHIFT 5 MODULE_AUTHOR("Michael Zappe <zapman@interlan.net>, Stephane Alnet <stephane@u-picardie.fr>, Brad Hards <bhards@bigpond.net.au> and Oliver Neukum <oliver@neukum.org>"); MODULE_DESCRIPTION("KL5USB101 USB Ethernet driver"); MODULE_LICENSE("GPL"); static const char driver_name[] = "kaweth"; static int kaweth_probe( struct usb_interface *intf, const struct usb_device_id *id /* from id_table */ ); static void kaweth_disconnect(struct usb_interface *intf); static int kaweth_internal_control_msg(struct usb_device *usb_dev, unsigned int pipe, struct usb_ctrlrequest *cmd, void *data, int len, int timeout); /**************************************************************** * usb_device_id ****************************************************************/ static struct usb_device_id usb_klsi_table[] = { { USB_DEVICE(0x03e8, 0x0008) }, /* AOX Endpoints USB Ethernet */ { USB_DEVICE(0x04bb, 0x0901) }, /* I-O DATA USB-ET/T */ { USB_DEVICE(0x0506, 0x03e8) }, /* 3Com 3C19250 */ { USB_DEVICE(0x0506, 0x11f8) }, /* 3Com 3C460 */ { USB_DEVICE(0x0557, 0x2002) }, /* ATEN USB Ethernet */ { USB_DEVICE(0x0557, 0x4000) }, /* D-Link DSB-650C */ { USB_DEVICE(0x0565, 0x0002) }, /* Peracom Enet */ { USB_DEVICE(0x0565, 0x0003) }, /* Optus@Home UEP1045A */ { USB_DEVICE(0x0565, 0x0005) }, /* Peracom Enet2 */ { USB_DEVICE(0x05e9, 0x0008) }, /* KLSI KL5KUSB101B */ { USB_DEVICE(0x05e9, 0x0009) }, /* KLSI KL5KUSB101B (Board change) */ { USB_DEVICE(0x066b, 0x2202) }, /* Linksys USB10T */ { USB_DEVICE(0x06e1, 0x0008) }, /* ADS USB-10BT */ { USB_DEVICE(0x06e1, 0x0009) }, /* ADS USB-10BT */ { USB_DEVICE(0x0707, 0x0100) }, /* SMC 2202USB */ { USB_DEVICE(0x07aa, 0x0001) }, /* Correga K.K. */ { USB_DEVICE(0x07b8, 0x4000) }, /* D-Link DU-E10 */ { USB_DEVICE(0x0846, 0x1001) }, /* NetGear EA-101 */ { USB_DEVICE(0x0846, 0x1002) }, /* NetGear EA-101 */ { USB_DEVICE(0x085a, 0x0008) }, /* PortGear Ethernet Adapter */ { USB_DEVICE(0x085a, 0x0009) }, /* PortGear Ethernet Adapter */ { USB_DEVICE(0x087d, 0x5704) }, /* Jaton USB Ethernet Device Adapter */ { USB_DEVICE(0x0951, 0x0008) }, /* Kingston Technology USB Ethernet Adapter */ { USB_DEVICE(0x095a, 0x3003) }, /* Portsmith Express Ethernet Adapter */ { USB_DEVICE(0x10bd, 0x1427) }, /* ASANTE USB To Ethernet Adapter */ { USB_DEVICE(0x1342, 0x0204) }, /* Mobility USB-Ethernet Adapter */ { USB_DEVICE(0x13d2, 0x0400) }, /* Shark Pocket Adapter */ { USB_DEVICE(0x1485, 0x0001) }, /* Silicom U2E */ { USB_DEVICE(0x1485, 0x0002) }, /* Psion Dacom Gold Port Ethernet */ { USB_DEVICE(0x1645, 0x0005) }, /* Entrega E45 */ { USB_DEVICE(0x1645, 0x0008) }, /* Entrega USB Ethernet Adapter */ { USB_DEVICE(0x1645, 0x8005) }, /* PortGear Ethernet Adapter */ { USB_DEVICE(0x2001, 0x4000) }, /* D-link DSB-650C */ {} /* Null terminator */ }; MODULE_DEVICE_TABLE (usb, usb_klsi_table); /**************************************************************** * kaweth_driver ****************************************************************/ static struct usb_driver kaweth_driver = { .owner = THIS_MODULE, .name = driver_name, .probe = kaweth_probe, .disconnect = kaweth_disconnect, .id_table = usb_klsi_table, }; typedef __u8 eth_addr_t[6]; /**************************************************************** * usb_eth_dev ****************************************************************/ struct usb_eth_dev { char *name; __u16 vendor; __u16 device; void *pdata; }; /**************************************************************** * kaweth_ethernet_configuration * Refer Table 8 ****************************************************************/ struct kaweth_ethernet_configuration { __u8 size; __u8 reserved1; __u8 reserved2; eth_addr_t hw_addr; __u32 statistics_mask; __le16 segment_size; __u16 max_multicast_filters; __u8 reserved3; } __attribute__ ((packed)); /**************************************************************** * kaweth_device ****************************************************************/ struct kaweth_device { spinlock_t device_lock; __u32 status; int end; int suspend_lowmem_rx; int suspend_lowmem_ctrl; int linkstate; struct work_struct lowmem_work; struct usb_device *dev; struct net_device *net; wait_queue_head_t term_wait; struct urb *rx_urb; struct urb *tx_urb; struct urb *irq_urb; dma_addr_t intbufferhandle; __u8 *intbuffer; dma_addr_t rxbufferhandle; __u8 *rx_buf; struct sk_buff *tx_skb; __u8 *firmware_buf; __u8 scratch[KAWETH_SCRATCH_SIZE]; __u16 packet_filter_bitmap; struct kaweth_ethernet_configuration configuration; struct net_device_stats stats; }; /**************************************************************** * kaweth_control ****************************************************************/ static int kaweth_control(struct kaweth_device *kaweth, unsigned int pipe, __u8 request, __u8 requesttype, __u16 value, __u16 index, void *data, __u16 size, int timeout) { struct usb_ctrlrequest *dr; kaweth_dbg("kaweth_control()"); if(in_interrupt()) { kaweth_dbg("in_interrupt()"); return -EBUSY; } dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC); if (!dr) { kaweth_dbg("kmalloc() failed"); return -ENOMEM; } dr->bRequestType= requesttype; dr->bRequest = request; dr->wValue = cpu_to_le16p(&value); dr->wIndex = cpu_to_le16p(&index); dr->wLength = cpu_to_le16p(&size); return kaweth_internal_control_msg(kaweth->dev, pipe, dr, data, size, timeout); } /**************************************************************** * kaweth_read_configuration ****************************************************************/ static int kaweth_read_configuration(struct kaweth_device *kaweth) { int retval; kaweth_dbg("Reading kaweth configuration"); retval = kaweth_control(kaweth, usb_rcvctrlpipe(kaweth->dev, 0), KAWETH_COMMAND_GET_ETHERNET_DESC, USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_DEVICE, 0, 0, (void *)&kaweth->configuration, sizeof(kaweth->configuration), KAWETH_CONTROL_TIMEOUT); return retval; } /**************************************************************** * kaweth_set_urb_size ****************************************************************/ static int kaweth_set_urb_size(struct kaweth_device *kaweth, __u16 urb_size) { int retval; kaweth_dbg("Setting URB size to %d", (unsigned)urb_size); retval = kaweth_control(kaweth, usb_sndctrlpipe(kaweth->dev, 0), KAWETH_COMMAND_SET_URB_SIZE, USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, urb_size, 0, (void *)&kaweth->scratch, 0, KAWETH_CONTROL_TIMEOUT); return retval; } /**************************************************************** * kaweth_set_sofs_wait ****************************************************************/ static int kaweth_set_sofs_wait(struct kaweth_device *kaweth, __u16 sofs_wait) { int retval; kaweth_dbg("Set SOFS wait to %d", (unsigned)sofs_wait); retval = kaweth_control(kaweth, usb_sndctrlpipe(kaweth->dev, 0), KAWETH_COMMAND_SET_SOFS_WAIT, USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, sofs_wait, 0, (void *)&kaweth->scratch, 0, KAWETH_CONTROL_TIMEOUT); return retval; } /**************************************************************** * kaweth_set_receive_filter ****************************************************************/ static int kaweth_set_receive_filter(struct kaweth_device *kaweth, __u16 receive_filter) { int retval; kaweth_dbg("Set receive filter to %d", (unsigned)receive_filter); retval = kaweth_control(kaweth, usb_sndctrlpipe(kaweth->dev, 0), KAWETH_COMMAND_SET_PACKET_FILTER, USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, receive_filter, 0, (void *)&kaweth->scratch, 0, KAWETH_CONTROL_TIMEOUT); return retval; } /**************************************************************** * kaweth_download_firmware ****************************************************************/ static int kaweth_download_firmware(struct kaweth_device *kaweth, __u8 *data, __u16 data_len, __u8 interrupt, __u8 type) { if(data_len > KAWETH_FIRMWARE_BUF_SIZE) { kaweth_err("Firmware too big: %d", data_len); return -ENOSPC; } memcpy(kaweth->firmware_buf, data, data_len); kaweth->firmware_buf[2] = (data_len & 0xFF) - 7; kaweth->firmware_buf[3] = data_len >> 8; kaweth->firmware_buf[4] = type; kaweth->firmware_buf[5] = interrupt; kaweth_dbg("High: %i, Low:%i", kaweth->firmware_buf[3], kaweth->firmware_buf[2]); kaweth_dbg("Downloading firmware at %p to kaweth device at %p", data, kaweth); kaweth_dbg("Firmware length: %d", data_len); return kaweth_control(kaweth, usb_sndctrlpipe(kaweth->dev, 0), KAWETH_COMMAND_SCAN, USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, 0, 0, (void *)kaweth->firmware_buf, data_len, KAWETH_CONTROL_TIMEOUT); } /**************************************************************** * kaweth_trigger_firmware ****************************************************************/ static int kaweth_trigger_firmware(struct kaweth_device *kaweth, __u8 interrupt) { kaweth->firmware_buf[0] = 0xB6; kaweth->firmware_buf[1] = 0xC3; kaweth->firmware_buf[2] = 0x01; kaweth->firmware_buf[3] = 0x00; kaweth->firmware_buf[4] = 0x06; kaweth->firmware_buf[5] = interrupt; kaweth->firmware_buf[6] = 0x00; kaweth->firmware_buf[7] = 0x00; kaweth_dbg("Triggering firmware"); return kaweth_control(kaweth, usb_sndctrlpipe(kaweth->dev, 0), KAWETH_COMMAND_SCAN, USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, 0, 0, (void *)kaweth->firmware_buf, 8, KAWETH_CONTROL_TIMEOUT); } /**************************************************************** * kaweth_reset ****************************************************************/ static int kaweth_reset(struct kaweth_device *kaweth) { int result; kaweth_dbg("kaweth_reset(%p)", kaweth); result = kaweth_control(kaweth, usb_sndctrlpipe(kaweth->dev, 0), USB_REQ_SET_CONFIGURATION, 0, kaweth->dev->config[0].desc.bConfigurationValue, 0, NULL, 0, KAWETH_CONTROL_TIMEOUT); mdelay(10); kaweth_dbg("kaweth_reset() returns %d.",result); return result; } static void kaweth_usb_receive(struct urb *, struct pt_regs *regs); static int kaweth_resubmit_rx_urb(struct kaweth_device *, gfp_t); /**************************************************************** int_callback *****************************************************************/ static void kaweth_resubmit_int_urb(struct kaweth_device *kaweth, gfp_t mf) { int status; status = usb_submit_urb (kaweth->irq_urb, mf); if (unlikely(status == -ENOMEM)) { kaweth->suspend_lowmem_ctrl = 1; schedule_delayed_work(&kaweth->lowmem_work, HZ/4); } else { kaweth->suspend_lowmem_ctrl = 0; } if (status) err ("can't resubmit intr, %s-%s, status %d", kaweth->dev->bus->bus_name, kaweth->dev->devpath, status); } static void int_callback(struct urb *u, struct pt_regs *regs) { struct kaweth_device *kaweth = u->context; int act_state; switch (u->status) { case 0: /* success */ break; case -ECONNRESET: /* unlink */ case -ENOENT: case -ESHUTDOWN: return; /* -EPIPE: should clear the halt */ default: /* error */ goto resubmit; } /* we check the link state to report changes */ if (kaweth->linkstate != (act_state = ( kaweth->intbuffer[STATE_OFFSET] | STATE_MASK) >> STATE_SHIFT)) { if (act_state) netif_carrier_on(kaweth->net); else netif_carrier_off(kaweth->net); kaweth->linkstate = act_state; } resubmit: kaweth_resubmit_int_urb(kaweth, GFP_ATOMIC); } static void kaweth_resubmit_tl(void *d) { struct kaweth_device *kaweth = (struct kaweth_device *)d; if (kaweth->status | KAWETH_STATUS_CLOSING) return; if (kaweth->suspend_lowmem_rx) kaweth_resubmit_rx_urb(kaweth, GFP_NOIO); if (kaweth->suspend_lowmem_ctrl) kaweth_resubmit_int_urb(kaweth, GFP_NOIO); } /**************************************************************** * kaweth_resubmit_rx_urb ****************************************************************/ static int kaweth_resubmit_rx_urb(struct kaweth_device *kaweth, gfp_t mem_flags) { int result; usb_fill_bulk_urb(kaweth->rx_urb, kaweth->dev, usb_rcvbulkpipe(kaweth->dev, 1), kaweth->rx_buf, KAWETH_BUF_SIZE, kaweth_usb_receive, kaweth); kaweth->rx_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; kaweth->rx_urb->transfer_dma = kaweth->rxbufferhandle; if((result = usb_submit_urb(kaweth->rx_urb, mem_flags))) { if (result == -ENOMEM) { kaweth->suspend_lowmem_rx = 1; schedule_delayed_work(&kaweth->lowmem_work, HZ/4); } kaweth_err("resubmitting rx_urb %d failed", result); } else { kaweth->suspend_lowmem_rx = 0; } return result; } static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth); /**************************************************************** * kaweth_usb_receive ****************************************************************/ static void kaweth_usb_receive(struct urb *urb, struct pt_regs *regs) { struct kaweth_device *kaweth = urb->context; struct net_device *net = kaweth->net; int count = urb->actual_length; int count2 = urb->transfer_buffer_length; __u16 pkt_len = le16_to_cpup((__le16 *)kaweth->rx_buf); struct sk_buff *skb; if(unlikely(urb->status == -ECONNRESET || urb->status == -ESHUTDOWN)) /* we are killed - set a flag and wake the disconnect handler */ { kaweth->end = 1; wake_up(&kaweth->term_wait); return; } if (kaweth->status & KAWETH_STATUS_CLOSING) return; if(urb->status && urb->status != -EREMOTEIO && count != 1) { kaweth_err("%s RX status: %d count: %d packet_len: %d", net->name, urb->status, count, (int)pkt_len); kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC); return; } if(kaweth->net && (count > 2)) { if(pkt_len > (count - 2)) { kaweth_err("Packet length too long for USB frame (pkt_len: %x, count: %x)",pkt_len, count); kaweth_err("Packet len & 2047: %x", pkt_len & 2047); kaweth_err("Count 2: %x", count2); kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC); return; } if(!(skb = dev_alloc_skb(pkt_len+2))) { kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC); return; } skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ skb->dev = net; eth_copy_and_sum(skb, kaweth->rx_buf + 2, pkt_len, 0); skb_put(skb, pkt_len); skb->protocol = eth_type_trans(skb, net); netif_rx(skb); kaweth->stats.rx_packets++; kaweth->stats.rx_bytes += pkt_len; } kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC); } /**************************************************************** * kaweth_open ****************************************************************/ static int kaweth_open(struct net_device *net) { struct kaweth_device *kaweth = netdev_priv(net); int res; kaweth_dbg("Opening network device."); res = kaweth_resubmit_rx_urb(kaweth, GFP_KERNEL); if (res) return -EIO; usb_fill_int_urb( kaweth->irq_urb, kaweth->dev, usb_rcvintpipe(kaweth->dev, 3), kaweth->intbuffer, INTBUFFERSIZE, int_callback, kaweth, 250); /* overriding the descriptor */ kaweth->irq_urb->transfer_dma = kaweth->intbufferhandle; kaweth->irq_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; res = usb_submit_urb(kaweth->irq_urb, GFP_KERNEL); if (res) { usb_kill_urb(kaweth->rx_urb); return -EIO; } netif_start_queue(net); kaweth_async_set_rx_mode(kaweth); return 0; } /**************************************************************** * kaweth_close ****************************************************************/ static int kaweth_close(struct net_device *net) { struct kaweth_device *kaweth = netdev_priv(net); netif_stop_queue(net); kaweth->status |= KAWETH_STATUS_CLOSING; usb_kill_urb(kaweth->irq_urb); usb_kill_urb(kaweth->rx_urb); usb_kill_urb(kaweth->tx_urb); flush_scheduled_work(); /* a scheduled work may have resubmitted, we hit them again */ usb_kill_urb(kaweth->irq_urb); usb_kill_urb(kaweth->rx_urb); kaweth->status &= ~KAWETH_STATUS_CLOSING; return 0; } static void kaweth_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) { strlcpy(info->driver, driver_name, sizeof(info->driver)); } static struct ethtool_ops ops = { .get_drvinfo = kaweth_get_drvinfo }; /**************************************************************** * kaweth_usb_transmit_complete ****************************************************************/ static void kaweth_usb_transmit_complete(struct urb *urb, struct pt_regs *regs) { struct kaweth_device *kaweth = urb->context; struct sk_buff *skb = kaweth->tx_skb; if (unlikely(urb->status != 0)) if (urb->status != -ENOENT) kaweth_dbg("%s: TX status %d.", kaweth->net->name, urb->status); netif_wake_queue(kaweth->net); dev_kfree_skb_irq(skb); } /**************************************************************** * kaweth_start_xmit ****************************************************************/ static int kaweth_start_xmit(struct sk_buff *skb, struct net_device *net) { struct kaweth_device *kaweth = netdev_priv(net); __le16 *private_header; int res; spin_lock(&kaweth->device_lock); kaweth_async_set_rx_mode(kaweth); netif_stop_queue(net); /* We now decide whether we can put our special header into the sk_buff */ if (skb_cloned(skb) || skb_headroom(skb) < 2) { /* no such luck - we make our own */ struct sk_buff *copied_skb; copied_skb = skb_copy_expand(skb, 2, 0, GFP_ATOMIC); dev_kfree_skb_irq(skb); skb = copied_skb; if (!copied_skb) { kaweth->stats.tx_errors++; netif_start_queue(net); spin_unlock(&kaweth->device_lock); return 0; } } private_header = (__le16 *)__skb_push(skb, 2); *private_header = cpu_to_le16(skb->len-2); kaweth->tx_skb = skb; usb_fill_bulk_urb(kaweth->tx_urb, kaweth->dev, usb_sndbulkpipe(kaweth->dev, 2), private_header, skb->len, kaweth_usb_transmit_complete, kaweth); kaweth->end = 0; if((res = usb_submit_urb(kaweth->tx_urb, GFP_ATOMIC))) { kaweth_warn("kaweth failed tx_urb %d", res); kaweth->stats.tx_errors++; netif_start_queue(net); dev_kfree_skb_irq(skb); } else { kaweth->stats.tx_packets++; kaweth->stats.tx_bytes += skb->len; net->trans_start = jiffies; } spin_unlock(&kaweth->device_lock); return 0; } /**************************************************************** * kaweth_set_rx_mode ****************************************************************/ static void kaweth_set_rx_mode(struct net_device *net) { struct kaweth_device *kaweth = netdev_priv(net); __u16 packet_filter_bitmap = KAWETH_PACKET_FILTER_DIRECTED | KAWETH_PACKET_FILTER_BROADCAST | KAWETH_PACKET_FILTER_MULTICAST; kaweth_dbg("Setting Rx mode to %d", packet_filter_bitmap); netif_stop_queue(net); if (net->flags & IFF_PROMISC) { packet_filter_bitmap |= KAWETH_PACKET_FILTER_PROMISCUOUS; } else if ((net->mc_count) || (net->flags & IFF_ALLMULTI)) { packet_filter_bitmap |= KAWETH_PACKET_FILTER_ALL_MULTICAST; } kaweth->packet_filter_bitmap = packet_filter_bitmap; netif_wake_queue(net); } /**************************************************************** * kaweth_async_set_rx_mode ****************************************************************/ static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth) { __u16 packet_filter_bitmap = kaweth->packet_filter_bitmap; kaweth->packet_filter_bitmap = 0; if (packet_filter_bitmap == 0) return; { int result; result = kaweth_control(kaweth, usb_sndctrlpipe(kaweth->dev, 0), KAWETH_COMMAND_SET_PACKET_FILTER, USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, packet_filter_bitmap, 0, (void *)&kaweth->scratch, 0, KAWETH_CONTROL_TIMEOUT); if(result < 0) { kaweth_err("Failed to set Rx mode: %d", result); } else { kaweth_dbg("Set Rx mode to %d", packet_filter_bitmap); } } } /**************************************************************** * kaweth_netdev_stats ****************************************************************/ static struct net_device_stats *kaweth_netdev_stats(struct net_device *dev) { struct kaweth_device *kaweth = netdev_priv(dev); return &kaweth->stats; } /**************************************************************** * kaweth_tx_timeout ****************************************************************/ static void kaweth_tx_timeout(struct net_device *net) { struct kaweth_device *kaweth = netdev_priv(net); kaweth_warn("%s: Tx timed out. Resetting.", net->name); kaweth->stats.tx_errors++; net->trans_start = jiffies; usb_unlink_urb(kaweth->tx_urb); } /**************************************************************** * kaweth_probe ****************************************************************/ static int kaweth_probe( struct usb_interface *intf, const struct usb_device_id *id /* from id_table */ ) { struct usb_device *dev = interface_to_usbdev(intf); struct kaweth_device *kaweth; struct net_device *netdev; const eth_addr_t bcast_addr = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; int result = 0; kaweth_dbg("Kawasaki Device Probe (Device number:%d): 0x%4.4x:0x%4.4x:0x%4.4x", dev->devnum, le16_to_cpu(dev->descriptor.idVendor), le16_to_cpu(dev->descriptor.idProduct), le16_to_cpu(dev->descriptor.bcdDevice)); kaweth_dbg("Device at %p", dev); kaweth_dbg("Descriptor length: %x type: %x", (int)dev->descriptor.bLength, (int)dev->descriptor.bDescriptorType); netdev = alloc_etherdev(sizeof(*kaweth)); if (!netdev) return -ENOMEM; kaweth = netdev_priv(netdev); kaweth->dev = dev; kaweth->net = netdev; spin_lock_init(&kaweth->device_lock); init_waitqueue_head(&kaweth->term_wait); kaweth_dbg("Resetting."); kaweth_reset(kaweth); /* * If high byte of bcdDevice is nonzero, firmware is already * downloaded. Don't try to do it again, or we'll hang the device. */ if (le16_to_cpu(dev->descriptor.bcdDevice) >> 8) { kaweth_info("Firmware present in device."); } else { /* Download the firmware */ kaweth_info("Downloading firmware..."); kaweth->firmware_buf = (__u8 *)__get_free_page(GFP_KERNEL); if ((result = kaweth_download_firmware(kaweth, kaweth_new_code, len_kaweth_new_code, 100, 2)) < 0) { kaweth_err("Error downloading firmware (%d)", result); goto err_fw; } if ((result = kaweth_download_firmware(kaweth, kaweth_new_code_fix, len_kaweth_new_code_fix, 100, 3)) < 0) { kaweth_err("Error downloading firmware fix (%d)", result); goto err_fw; } if ((result = kaweth_download_firmware(kaweth, kaweth_trigger_code, len_kaweth_trigger_code, 126, 2)) < 0) { kaweth_err("Error downloading trigger code (%d)", result); goto err_fw; } if ((result = kaweth_download_firmware(kaweth, kaweth_trigger_code_fix, len_kaweth_trigger_code_fix, 126, 3)) < 0) { kaweth_err("Error downloading trigger code fix (%d)", result); goto err_fw; } if ((result = kaweth_trigger_firmware(kaweth, 126)) < 0) { kaweth_err("Error triggering firmware (%d)", result); goto err_fw; } /* Device will now disappear for a moment... */ kaweth_info("Firmware loaded. I'll be back..."); err_fw: free_page((unsigned long)kaweth->firmware_buf); free_netdev(netdev); return -EIO; } result = kaweth_read_configuration(kaweth); if(result < 0) { kaweth_err("Error reading configuration (%d), no net device created", result); goto err_free_netdev; } kaweth_info("Statistics collection: %x", kaweth->configuration.statistics_mask); kaweth_info("Multicast filter limit: %x", kaweth->configuration.max_multicast_filters & ((1 << 15) - 1)); kaweth_info("MTU: %d", le16_to_cpu(kaweth->configuration.segment_size)); kaweth_info("Read MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", (int)kaweth->configuration.hw_addr[0], (int)kaweth->configuration.hw_addr[1], (int)kaweth->configuration.hw_addr[2], (int)kaweth->configuration.hw_addr[3], (int)kaweth->configuration.hw_addr[4], (int)kaweth->configuration.hw_addr[5]); if(!memcmp(&kaweth->configuration.hw_addr, &bcast_addr, sizeof(bcast_addr))) { kaweth_err("Firmware not functioning properly, no net device created"); goto err_free_netdev; } if(kaweth_set_urb_size(kaweth, KAWETH_BUF_SIZE) < 0) { kaweth_dbg("Error setting URB size"); goto err_free_netdev; } if(kaweth_set_sofs_wait(kaweth, KAWETH_SOFS_TO_WAIT) < 0) { kaweth_err("Error setting SOFS wait"); goto err_free_netdev; } result = kaweth_set_receive_filter(kaweth, KAWETH_PACKET_FILTER_DIRECTED | KAWETH_PACKET_FILTER_BROADCAST | KAWETH_PACKET_FILTER_MULTICAST); if(result < 0) { kaweth_err("Error setting receive filter"); goto err_free_netdev; } kaweth_dbg("Initializing net device."); kaweth->tx_urb = usb_alloc_urb(0, GFP_KERNEL); if (!kaweth->tx_urb) goto err_free_netdev; kaweth->rx_urb = usb_alloc_urb(0, GFP_KERNEL); if (!kaweth->rx_urb) goto err_only_tx; kaweth->irq_urb = usb_alloc_urb(0, GFP_KERNEL); if (!kaweth->irq_urb) goto err_tx_and_rx; kaweth->intbuffer = usb_buffer_alloc( kaweth->dev, INTBUFFERSIZE, GFP_KERNEL, &kaweth->intbufferhandle); if (!kaweth->intbuffer) goto err_tx_and_rx_and_irq; kaweth->rx_buf = usb_buffer_alloc( kaweth->dev, KAWETH_BUF_SIZE, GFP_KERNEL, &kaweth->rxbufferhandle); if (!kaweth->rx_buf) goto err_all_but_rxbuf; memcpy(netdev->broadcast, &bcast_addr, sizeof(bcast_addr)); memcpy(netdev->dev_addr, &kaweth->configuration.hw_addr, sizeof(kaweth->configuration.hw_addr)); netdev->open = kaweth_open; netdev->stop = kaweth_close; netdev->watchdog_timeo = KAWETH_TX_TIMEOUT; netdev->tx_timeout = kaweth_tx_timeout; netdev->hard_start_xmit = kaweth_start_xmit; netdev->set_multicast_list = kaweth_set_rx_mode; netdev->get_stats = kaweth_netdev_stats; netdev->mtu = le16_to_cpu(kaweth->configuration.segment_size); SET_ETHTOOL_OPS(netdev, &ops); /* kaweth is zeroed as part of alloc_netdev */ INIT_WORK(&kaweth->lowmem_work, kaweth_resubmit_tl, (void *)kaweth); SET_MODULE_OWNER(netdev); usb_set_intfdata(intf, kaweth); #if 0 // dma_supported() is deeply broken on almost all architectures if (dma_supported (&intf->dev, 0xffffffffffffffffULL)) kaweth->net->features |= NETIF_F_HIGHDMA; #endif SET_NETDEV_DEV(netdev, &intf->dev); if (register_netdev(netdev) != 0) { kaweth_err("Error registering netdev."); goto err_intfdata; } kaweth_info("kaweth interface created at %s", kaweth->net->name); kaweth_dbg("Kaweth probe returning."); return 0; err_intfdata: usb_set_intfdata(intf, NULL); usb_buffer_free(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle); err_all_but_rxbuf: usb_buffer_free(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle); err_tx_and_rx_and_irq: usb_free_urb(kaweth->irq_urb); err_tx_and_rx: usb_free_urb(kaweth->rx_urb); err_only_tx: usb_free_urb(kaweth->tx_urb); err_free_netdev: free_netdev(netdev); return -EIO; } /**************************************************************** * kaweth_disconnect ****************************************************************/ static void kaweth_disconnect(struct usb_interface *intf) { struct kaweth_device *kaweth = usb_get_intfdata(intf); struct net_device *netdev; kaweth_info("Unregistering"); usb_set_intfdata(intf, NULL); if (!kaweth) { kaweth_warn("unregistering non-existant device"); return; } netdev = kaweth->net; kaweth_dbg("Unregistering net device"); unregister_netdev(netdev); usb_free_urb(kaweth->rx_urb); usb_free_urb(kaweth->tx_urb); usb_free_urb(kaweth->irq_urb); usb_buffer_free(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle); usb_buffer_free(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle); free_netdev(netdev); } // FIXME this completion stuff is a modified clone of // an OLD version of some stuff in usb.c ... struct usb_api_data { wait_queue_head_t wqh; int done; }; /*-------------------------------------------------------------------* * completion handler for compatibility wrappers (sync control/bulk) * *-------------------------------------------------------------------*/ static void usb_api_blocking_completion(struct urb *urb, struct pt_regs *regs) { struct usb_api_data *awd = (struct usb_api_data *)urb->context; awd->done=1; wake_up(&awd->wqh); } /*-------------------------------------------------------------------* * COMPATIBILITY STUFF * *-------------------------------------------------------------------*/ // Starts urb and waits for completion or timeout static int usb_start_wait_urb(struct urb *urb, int timeout, int* actual_length) { struct usb_api_data awd; int status; init_waitqueue_head(&awd.wqh); awd.done = 0; urb->context = &awd; status = usb_submit_urb(urb, GFP_NOIO); if (status) { // something went wrong usb_free_urb(urb); return status; } if (!wait_event_timeout(awd.wqh, awd.done, timeout)) { // timeout kaweth_warn("usb_control/bulk_msg: timeout"); usb_kill_urb(urb); // remove urb safely status = -ETIMEDOUT; } else { status = urb->status; } if (actual_length) { *actual_length = urb->actual_length; } usb_free_urb(urb); return status; } /*-------------------------------------------------------------------*/ // returns status (negative) or length (positive) static int kaweth_internal_control_msg(struct usb_device *usb_dev, unsigned int pipe, struct usb_ctrlrequest *cmd, void *data, int len, int timeout) { struct urb *urb; int retv; int length; urb = usb_alloc_urb(0, GFP_NOIO); if (!urb) return -ENOMEM; usb_fill_control_urb(urb, usb_dev, pipe, (unsigned char*)cmd, data, len, usb_api_blocking_completion, NULL); retv = usb_start_wait_urb(urb, timeout, &length); if (retv < 0) { return retv; } else { return length; } } /**************************************************************** * kaweth_init ****************************************************************/ static int __init kaweth_init(void) { kaweth_dbg("Driver loading"); return usb_register(&kaweth_driver); } /**************************************************************** * kaweth_exit ****************************************************************/ static void __exit kaweth_exit(void) { usb_deregister(&kaweth_driver); } module_init(kaweth_init); module_exit(kaweth_exit); |