diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/atm/nicstarmac.copyright |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'drivers/atm/nicstarmac.copyright')
-rw-r--r-- | drivers/atm/nicstarmac.copyright | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/drivers/atm/nicstarmac.copyright b/drivers/atm/nicstarmac.copyright new file mode 100644 index 000000000000..2e15b39fac4f --- /dev/null +++ b/drivers/atm/nicstarmac.copyright | |||
@@ -0,0 +1,61 @@ | |||
1 | /* nicstar.c v0.22 Jawaid Bazyar (bazyar@hypermall.com) | ||
2 | * nicstar.c, M. Welsh (matt.welsh@cl.cam.ac.uk) | ||
3 | * | ||
4 | * Hacked October, 1997 by Jawaid Bazyar, Interlink Advertising Services Inc. | ||
5 | * http://www.hypermall.com/ | ||
6 | * 10/1/97 - commented out CFG_PHYIE bit - we don't care when the PHY | ||
7 | * interrupts us (except possibly for removal/insertion of the cable?) | ||
8 | * 10/4/97 - began heavy inline documentation of the code. Corrected typos | ||
9 | * and spelling mistakes. | ||
10 | * 10/5/97 - added code to handle PHY interrupts, disable PHY on | ||
11 | * loss of link, and correctly re-enable PHY when link is | ||
12 | * re-established. (put back CFG_PHYIE) | ||
13 | * | ||
14 | * Modified to work with the IDT7721 nicstar -- AAL5 (tested) only. | ||
15 | * | ||
16 | * R. D. Rechenmacher <ron@fnal.gov>, Aug. 6, 1997 $Revision: 1.1 $ $Date: 1999/08/20 11:00:11 $ | ||
17 | * | ||
18 | * Linux driver for the IDT77201 NICStAR PCI ATM controller. | ||
19 | * PHY component is expected to be 155 Mbps S/UNI-Lite or IDT 77155; | ||
20 | * see init_nicstar() for PHY initialization to change this. This driver | ||
21 | * expects the Linux ATM stack to support scatter-gather lists | ||
22 | * (skb->atm.iovcnt != 0) for Rx skb's passed to vcc->push. | ||
23 | * | ||
24 | * Implementing minimal-copy of received data: | ||
25 | * IDT always receives data into a small buffer, then large buffers | ||
26 | * as needed. This means that data must always be copied to create | ||
27 | * the linear buffer needed by most non-ATM protocol stacks (e.g. IP) | ||
28 | * Fix is simple: make large buffers large enough to hold entire | ||
29 | * SDU, and leave <small_buffer_data> bytes empty at the start. Then | ||
30 | * copy small buffer contents to head of large buffer. | ||
31 | * Trick is to avoid fragmenting Linux, due to need for a lot of large | ||
32 | * buffers. This is done by 2 things: | ||
33 | * 1) skb->destructor / skb->atm.recycle_buffer | ||
34 | * combined, allow nicstar_free_rx_skb to be called to | ||
35 | * recycle large data buffers | ||
36 | * 2) skb_clone of received buffers | ||
37 | * See nicstar_free_rx_skb and linearize_buffer for implementation | ||
38 | * details. | ||
39 | * | ||
40 | * | ||
41 | * | ||
42 | * Copyright (c) 1996 University of Cambridge Computer Laboratory | ||
43 | * | ||
44 | * This program is free software; you can redistribute it and/or modify | ||
45 | * it under the terms of the GNU General Public License as published by | ||
46 | * the Free Software Foundation; either version 2 of the License, or | ||
47 | * (at your option) any later version. | ||
48 | * | ||
49 | * This program is distributed in the hope that it will be useful, | ||
50 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
51 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
52 | * GNU General Public License for more details. | ||
53 | * | ||
54 | * You should have received a copy of the GNU General Public License | ||
55 | * along with this program; if not, write to the Free Software | ||
56 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | ||
57 | * | ||
58 | * M. Welsh, 6 July 1996 | ||
59 | * | ||
60 | * | ||
61 | */ | ||