LXR linux/drivers/block/rsxx/rsxx

   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
  38struct card_cfg_hdr {
  39        __u32   version;
  40        __u32   crc;
  41};
  42
  43struct 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
  55struct 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
  73