Documentation/rapidio/tsi721.txt

   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.