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48618fb4 AB |
1 | RapidIO subsystem mport driver for IDT Tsi721 PCI Express-to-SRIO bridge. |
2 | ========================================================================= | |
3 | ||
4 | I. Overview | |
5 | ||
6 | This driver implements all currently defined RapidIO mport callback functions. | |
7 | It supports maintenance read and write operations, inbound and outbound RapidIO | |
8 | doorbells, inbound maintenance port-writes and RapidIO messaging. | |
9 | ||
10 | To generate SRIO maintenance transactions this driver uses one of Tsi721 DMA | |
11 | channels. This mechanism provides access to larger range of hop counts and | |
12 | destination IDs without need for changes in outbound window translation. | |
13 | ||
14 | RapidIO messaging support uses dedicated messaging channels for each mailbox. | |
15 | For inbound messages this driver uses destination ID matching to forward messages | |
16 | into the corresponding message queue. Messaging callbacks are implemented to be | |
17 | fully compatible with RIONET driver (Ethernet over RapidIO messaging services). | |
18 | ||
19 | II. Known problems | |
20 | ||
21 | None. | |
22 | ||
23 | III. To do | |
24 | ||
25 | Add DMA data transfers (non-messaging). | |
26 | Add inbound region (SRIO-to-PCIe) mapping. | |
27 | ||
28 | IV. Version History | |
29 | ||
30 | 1.0.0 - Initial driver release. | |
31 | ||
32 | V. License | |
33 | ----------------------------------------------- | |
34 | ||
35 | Copyright(c) 2011 Integrated Device Technology, Inc. All rights reserved. | |
36 | ||
37 | This program is free software; you can redistribute it and/or modify it | |
38 | under the terms of the GNU General Public License as published by the Free | |
39 | Software Foundation; either version 2 of the License, or (at your option) | |
40 | any later version. | |
41 | ||
42 | This program is distributed in the hope that it will be useful, but WITHOUT | |
43 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
44 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
45 | more details. | |
46 | ||
47 | You should have received a copy of the GNU General Public License along with | |
48 | this program; if not, write to the Free Software Foundation, Inc., | |
49 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |