drivers/block/rsxx/rsxx_cfg.h

   1 /*
   2 * Filename: rsXX_cfg.h
   3 *
   4 *
   5 * Authors: Joshua Morris <josh.h.morris@us.ibm.com>
   6 *       Philip Kelleher <pjk1939@linux.vnet.ibm.com>
   7 *
   8 * (C) Copyright 2013 IBM Corporation
   9 *
  10 * This program is free software; you can redistribute it and/or
  11 * modify it under the terms of the GNU General Public License as
  12 * published by the Free Software Foundation; either version 2 of the
  13 * License, or (at your option) any later version.
  14 *
  15 * This program is distributed in the hope that it will be useful, but
  16 * WITHOUT ANY WARRANTY; without even the implied warranty of
  17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  18 * General Public License for more details.
  19 *
  20 * You should have received a copy of the GNU General Public License
  21 * along with this program; if not, write to the Free Software Foundation,
  22 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  23 */
  24
  25 #ifndef __RSXX_CFG_H__
  26 #define __RSXX_CFG_H__
  27
  28 /* NOTE: Config values will be saved in network byte order (i.e. Big endian) */
  29 #include <linux/types.h>
  30
  31 /*
  32  * The card config version must match the driver's expected version. If it does
  33  * not, the DMA interfaces will not be attached and the user will need to
  34  * initialize/upgrade the card configuration using the card config utility.
  35  */
  36 #define RSXX_CFG_VERSION        4
  37
  38 struct card_cfg_hdr {
  39         __u32   version;
  40         __u32   crc;
  41 };
  42
  43 struct card_cfg_data {
  44         __u32   block_size;
  45         __u32   stripe_size;
  46         __u32   vendor_id;
  47         __u32   cache_order;
  48         struct {
  49                 __u32   mode;   /* Disabled, manual, auto-tune... */
  50                 __u32   count;  /* Number of intr to coalesce     */
  51                 __u32   latency;/* Max wait time (in ns)          */
  52         } intr_coal;
  53 };
  54
  55 struct rsxx_card_cfg {
  56         struct card_cfg_hdr     hdr;
  57         struct card_cfg_data    data;
  58 };
  59
  60 /* Vendor ID Values */
  61 #define RSXX_VENDOR_ID_IBM              0
  62 #define RSXX_VENDOR_ID_DSI              1
  63 #define RSXX_VENDOR_COUNT               2
  64
  65 /* Interrupt Coalescing Values */
  66 #define RSXX_INTR_COAL_DISABLED           0
  67 #define RSXX_INTR_COAL_EXPLICIT           1
  68 #define RSXX_INTR_COAL_AUTO_TUNE          2
  69
  70
  71 #endif /* __RSXX_CFG_H__ */
  72