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Diffstat (limited to 'drivers/usb/net/usbnet.c')
-rw-r--r--drivers/usb/net/usbnet.c350
1 files changed, 1 insertions, 349 deletions
diff --git a/drivers/usb/net/usbnet.c b/drivers/usb/net/usbnet.c
index 590bf31ae1f4..d52480aced80 100644
--- a/drivers/usb/net/usbnet.c
+++ b/drivers/usb/net/usbnet.c
@@ -156,9 +156,6 @@
156// us (it polls at HZ/4 usually) before we report too many false errors. 156// us (it polls at HZ/4 usually) before we report too many false errors.
157#define THROTTLE_JIFFIES (HZ/8) 157#define THROTTLE_JIFFIES (HZ/8)
158 158
159// for vendor-specific control operations
160#define CONTROL_TIMEOUT_MS USB_CTRL_GET_TIMEOUT
161
162// between wakeups 159// between wakeups
163#define UNLINK_TIMEOUT_MS 3 160#define UNLINK_TIMEOUT_MS 3
164 161
@@ -690,341 +687,6 @@ static const struct driver_info cdc_info = {
690 687
691 688
692 689
693#ifdef CONFIG_USB_GENESYS
694#define HAVE_HARDWARE
695
696/*-------------------------------------------------------------------------
697 *
698 * GeneSys GL620USB-A (www.genesyslogic.com.tw)
699 *
700 * ... should partially interop with the Win32 driver for this hardware
701 * The GeneSys docs imply there's some NDIS issue motivating this framing.
702 *
703 * Some info from GeneSys:
704 * - GL620USB-A is full duplex; GL620USB is only half duplex for bulk.
705 * (Some cables, like the BAFO-100c, use the half duplex version.)
706 * - For the full duplex model, the low bit of the version code says
707 * which side is which ("left/right").
708 * - For the half duplex type, a control/interrupt handshake settles
709 * the transfer direction. (That's disabled here, partially coded.)
710 * A control URB would block until other side writes an interrupt.
711 *
712 * Original code from Jiun-Jie Huang <huangjj@genesyslogic.com.tw>
713 * and merged into "usbnet" by Stanislav Brabec <utx@penguin.cz>.
714 *
715 *-------------------------------------------------------------------------*/
716
717// control msg write command
718#define GENELINK_CONNECT_WRITE 0xF0
719// interrupt pipe index
720#define GENELINK_INTERRUPT_PIPE 0x03
721// interrupt read buffer size
722#define INTERRUPT_BUFSIZE 0x08
723// interrupt pipe interval value
724#define GENELINK_INTERRUPT_INTERVAL 0x10
725// max transmit packet number per transmit
726#define GL_MAX_TRANSMIT_PACKETS 32
727// max packet length
728#define GL_MAX_PACKET_LEN 1514
729// max receive buffer size
730#define GL_RCV_BUF_SIZE \
731 (((GL_MAX_PACKET_LEN + 4) * GL_MAX_TRANSMIT_PACKETS) + 4)
732
733struct gl_packet {
734 u32 packet_length;
735 char packet_data [1];
736};
737
738struct gl_header {
739 u32 packet_count;
740 struct gl_packet packets;
741};
742
743#ifdef GENELINK_ACK
744
745// FIXME: this code is incomplete, not debugged; it doesn't
746// handle interrupts correctly. interrupts should be generic
747// code like all other device I/O, anyway.
748
749struct gl_priv {
750 struct urb *irq_urb;
751 char irq_buf [INTERRUPT_BUFSIZE];
752};
753
754static inline int gl_control_write (struct usbnet *dev, u8 request, u16 value)
755{
756 int retval;
757
758 retval = usb_control_msg (dev->udev,
759 usb_sndctrlpipe (dev->udev, 0),
760 request,
761 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
762 value,
763 0, // index
764 0, // data buffer
765 0, // size
766 CONTROL_TIMEOUT_MS);
767 return retval;
768}
769
770static void gl_interrupt_complete (struct urb *urb, struct pt_regs *regs)
771{
772 int status = urb->status;
773
774 switch (status) {
775 case 0:
776 /* success */
777 break;
778 case -ECONNRESET:
779 case -ENOENT:
780 case -ESHUTDOWN:
781 /* this urb is terminated, clean up */
782 dbg("%s - urb shutting down with status: %d",
783 __FUNCTION__, status);
784 return;
785 default:
786 dbg("%s - nonzero urb status received: %d",
787 __FUNCTION__, urb->status);
788 }
789
790 status = usb_submit_urb (urb, GFP_ATOMIC);
791 if (status)
792 err ("%s - usb_submit_urb failed with result %d",
793 __FUNCTION__, status);
794}
795
796static int gl_interrupt_read (struct usbnet *dev)
797{
798 struct gl_priv *priv = dev->priv_data;
799 int retval;
800
801 // issue usb interrupt read
802 if (priv && priv->irq_urb) {
803 // submit urb
804 if ((retval = usb_submit_urb (priv->irq_urb, GFP_KERNEL)) != 0)
805 dbg ("gl_interrupt_read: submit fail - %X...", retval);
806 else
807 dbg ("gl_interrupt_read: submit success...");
808 }
809
810 return 0;
811}
812
813// check whether another side is connected
814static int genelink_check_connect (struct usbnet *dev)
815{
816 int retval;
817
818 dbg ("genelink_check_connect...");
819
820 // detect whether another side is connected
821 if ((retval = gl_control_write (dev, GENELINK_CONNECT_WRITE, 0)) != 0) {
822 dbg ("%s: genelink_check_connect write fail - %X",
823 dev->net->name, retval);
824 return retval;
825 }
826
827 // usb interrupt read to ack another side
828 if ((retval = gl_interrupt_read (dev)) != 0) {
829 dbg ("%s: genelink_check_connect read fail - %X",
830 dev->net->name, retval);
831 return retval;
832 }
833
834 dbg ("%s: genelink_check_connect read success", dev->net->name);
835 return 0;
836}
837
838// allocate and initialize the private data for genelink
839static int genelink_init (struct usbnet *dev)
840{
841 struct gl_priv *priv;
842
843 // allocate the private data structure
844 if ((priv = kmalloc (sizeof *priv, GFP_KERNEL)) == 0) {
845 dbg ("%s: cannot allocate private data per device",
846 dev->net->name);
847 return -ENOMEM;
848 }
849
850 // allocate irq urb
851 if ((priv->irq_urb = usb_alloc_urb (0, GFP_KERNEL)) == 0) {
852 dbg ("%s: cannot allocate private irq urb per device",
853 dev->net->name);
854 kfree (priv);
855 return -ENOMEM;
856 }
857
858 // fill irq urb
859 usb_fill_int_urb (priv->irq_urb, dev->udev,
860 usb_rcvintpipe (dev->udev, GENELINK_INTERRUPT_PIPE),
861 priv->irq_buf, INTERRUPT_BUFSIZE,
862 gl_interrupt_complete, 0,
863 GENELINK_INTERRUPT_INTERVAL);
864
865 // set private data pointer
866 dev->priv_data = priv;
867
868 return 0;
869}
870
871// release the private data
872static int genelink_free (struct usbnet *dev)
873{
874 struct gl_priv *priv = dev->priv_data;
875
876 if (!priv)
877 return 0;
878
879// FIXME: can't cancel here; it's synchronous, and
880// should have happened earlier in any case (interrupt
881// handling needs to be generic)
882
883 // cancel irq urb first
884 usb_kill_urb (priv->irq_urb);
885
886 // free irq urb
887 usb_free_urb (priv->irq_urb);
888
889 // free the private data structure
890 kfree (priv);
891
892 return 0;
893}
894
895#endif
896
897static int genelink_rx_fixup (struct usbnet *dev, struct sk_buff *skb)
898{
899 struct gl_header *header;
900 struct gl_packet *packet;
901 struct sk_buff *gl_skb;
902 u32 size;
903
904 header = (struct gl_header *) skb->data;
905
906 // get the packet count of the received skb
907 le32_to_cpus (&header->packet_count);
908 if ((header->packet_count > GL_MAX_TRANSMIT_PACKETS)
909 || (header->packet_count < 0)) {
910 dbg ("genelink: invalid received packet count %d",
911 header->packet_count);
912 return 0;
913 }
914
915 // set the current packet pointer to the first packet
916 packet = &header->packets;
917
918 // decrement the length for the packet count size 4 bytes
919 skb_pull (skb, 4);
920
921 while (header->packet_count > 1) {
922 // get the packet length
923 size = packet->packet_length;
924
925 // this may be a broken packet
926 if (size > GL_MAX_PACKET_LEN) {
927 dbg ("genelink: invalid rx length %d", size);
928 return 0;
929 }
930
931 // allocate the skb for the individual packet
932 gl_skb = alloc_skb (size, GFP_ATOMIC);
933 if (gl_skb) {
934
935 // copy the packet data to the new skb
936 memcpy(skb_put(gl_skb, size), packet->packet_data, size);
937 usbnet_skb_return (dev, gl_skb);
938 }
939
940 // advance to the next packet
941 packet = (struct gl_packet *)
942 &packet->packet_data [size];
943 header->packet_count--;
944
945 // shift the data pointer to the next gl_packet
946 skb_pull (skb, size + 4);
947 }
948
949 // skip the packet length field 4 bytes
950 skb_pull (skb, 4);
951
952 if (skb->len > GL_MAX_PACKET_LEN) {
953 dbg ("genelink: invalid rx length %d", skb->len);
954 return 0;
955 }
956 return 1;
957}
958
959static struct sk_buff *
960genelink_tx_fixup (struct usbnet *dev, struct sk_buff *skb, unsigned flags)
961{
962 int padlen;
963 int length = skb->len;
964 int headroom = skb_headroom (skb);
965 int tailroom = skb_tailroom (skb);
966 u32 *packet_count;
967 u32 *packet_len;
968
969 // FIXME: magic numbers, bleech
970 padlen = ((skb->len + (4 + 4*1)) % 64) ? 0 : 1;
971
972 if ((!skb_cloned (skb))
973 && ((headroom + tailroom) >= (padlen + (4 + 4*1)))) {
974 if ((headroom < (4 + 4*1)) || (tailroom < padlen)) {
975 skb->data = memmove (skb->head + (4 + 4*1),
976 skb->data, skb->len);
977 skb->tail = skb->data + skb->len;
978 }
979 } else {
980 struct sk_buff *skb2;
981 skb2 = skb_copy_expand (skb, (4 + 4*1) , padlen, flags);
982 dev_kfree_skb_any (skb);
983 skb = skb2;
984 if (!skb)
985 return NULL;
986 }
987
988 // attach the packet count to the header
989 packet_count = (u32 *) skb_push (skb, (4 + 4*1));
990 packet_len = packet_count + 1;
991
992 // FIXME little endian?
993 *packet_count = 1;
994 *packet_len = length;
995
996 // add padding byte
997 if ((skb->len % dev->maxpacket) == 0)
998 skb_put (skb, 1);
999
1000 return skb;
1001}
1002
1003static int genelink_bind (struct usbnet *dev, struct usb_interface *intf)
1004{
1005 dev->hard_mtu = GL_RCV_BUF_SIZE;
1006 dev->net->hard_header_len += 4;
1007 return 0;
1008}
1009
1010static const struct driver_info genelink_info = {
1011 .description = "Genesys GeneLink",
1012 .flags = FLAG_FRAMING_GL | FLAG_NO_SETINT,
1013 .bind = genelink_bind,
1014 .rx_fixup = genelink_rx_fixup,
1015 .tx_fixup = genelink_tx_fixup,
1016
1017 .in = 1, .out = 2,
1018
1019#ifdef GENELINK_ACK
1020 .check_connect =genelink_check_connect,
1021#endif
1022};
1023
1024#endif /* CONFIG_USB_GENESYS */
1025
1026
1027
1028#ifdef CONFIG_USB_PL2301 690#ifdef CONFIG_USB_PL2301
1029#define HAVE_HARDWARE 691#define HAVE_HARDWARE
1030 692
@@ -1059,7 +721,7 @@ pl_vendor_req (struct usbnet *dev, u8 req, u8 val, u8 index)
1059 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 721 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
1060 val, index, 722 val, index,
1061 NULL, 0, 723 NULL, 0,
1062 CONTROL_TIMEOUT_MS); 724 USB_CTRL_GET_TIMEOUT);
1063} 725}
1064 726
1065static inline int 727static inline int
@@ -2323,16 +1985,6 @@ EXPORT_SYMBOL_GPL(usbnet_resume);
2323 1985
2324static const struct usb_device_id products [] = { 1986static const struct usb_device_id products [] = {
2325 1987
2326#ifdef CONFIG_USB_GENESYS
2327{
2328 USB_DEVICE (0x05e3, 0x0502), // GL620USB-A
2329 .driver_info = (unsigned long) &genelink_info,
2330},
2331 /* NOT: USB_DEVICE (0x05e3, 0x0501), // GL620USB
2332 * that's half duplex, not currently supported
2333 */
2334#endif
2335
2336#ifdef CONFIG_USB_PL2301 1988#ifdef CONFIG_USB_PL2301
2337{ 1989{
2338 USB_DEVICE (0x067b, 0x0000), // PL-2301 1990 USB_DEVICE (0x067b, 0x0000), // PL-2301
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-29 08:38:06 -0500