LXR linux/drivers/block/rsxx/rsxx

   1/* SPDX-License-Identifier: GPL-2.0-or-later */
   2/*
   3* Filename: rsXX_cfg.h
   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
  11#ifndef __RSXX_CFG_H__
  12#define __RSXX_CFG_H__
  13
  14/* NOTE: Config values will be saved in network byte order (i.e. Big endian) */
  15#include <linux/types.h>
  16
  17/*
  18 * The card config version must match the driver's expected version. If it does
  19 * not, the DMA interfaces will not be attached and the user will need to
  20 * initialize/upgrade the card configuration using the card config utility.
  21 */
  22#define RSXX_CFG_VERSION        4
  23
  24struct card_cfg_hdr {
  25        __u32   version;
  26        __u32   crc;
  27};
  28
  29struct card_cfg_data {
  30        __u32   block_size;
  31        __u32   stripe_size;
  32        __u32   vendor_id;
  33        __u32   cache_order;
  34        struct {
  35                __u32   mode;   /* Disabled, manual, auto-tune... */
  36                __u32   count;  /* Number of intr to coalesce     */
  37                __u32   latency;/* Max wait time (in ns)          */
  38        } intr_coal;
  39};
  40
  41struct rsxx_card_cfg {
  42        struct card_cfg_hdr     hdr;
  43        struct card_cfg_data    data;
  44};
  45
  46/* Vendor ID Values */
  47#define RSXX_VENDOR_ID_IBM              0
  48#define RSXX_VENDOR_ID_DSI              1
  49#define RSXX_VENDOR_COUNT               2
  50
  51/* Interrupt Coalescing Values */
  52#define RSXX_INTR_COAL_DISABLED           0
  53#define RSXX_INTR_COAL_EXPLICIT           1
  54#define RSXX_INTR_COAL_AUTO_TUNE          2
  55
  56
  57#endif /* __RSXX_CFG_H__ */
  58
  59