LXR linux/drivers/net/fddi/skfp/h/osdef1st.h

   1/* SPDX-License-Identifier: GPL-2.0-or-later */
   2/******************************************************************************
   3 *
   4 *      (C)Copyright 1998,1999 SysKonnect,
   5 *      a business unit of Schneider & Koch & Co. Datensysteme GmbH.
   6 *
   7 *      The information in this file is provided "AS IS" without warranty.
   8 *
   9 ******************************************************************************/
  10
  11/* 
  12 * Operating system-dependent definitions that have to be defined
  13 * before any other header files are included.
  14 */
  15
  16// HWM (HardWare Module) Definitions
  17// -----------------------
  18
  19#include <asm/byteorder.h>
  20
  21#ifdef __LITTLE_ENDIAN
  22#define LITTLE_ENDIAN
  23#else
  24#define BIG_ENDIAN
  25#endif
  26
  27// this is set in the makefile
  28// #define PCI                  /* only PCI adapters supported by this driver */
  29// #define MEM_MAPPED_IO        /* use memory mapped I/O */
  30
  31
  32#define USE_CAN_ADDR            /* DA and SA in MAC header are canonical. */
  33
  34#define MB_OUTSIDE_SMC          /* SMT Mbufs outside of smc struct. */
  35
  36// -----------------------
  37
  38
  39// SMT Definitions 
  40// -----------------------
  41#define SYNC                    /* allow synchronous frames */
  42
  43// #define SBA                  /* Synchronous Bandwidth Allocator support */
  44                                /* not available as free source */
  45
  46#define ESS                     /* SBA End Station Support */
  47
  48#define SMT_PANIC(smc, nr, msg) printk(KERN_INFO "SMT PANIC: code: %d, msg: %s\n",nr,msg)
  49
  50
  51#ifdef DEBUG
  52#define printf(s,args...) printk(KERN_INFO s, ## args)
  53#endif
  54
  55// #define HW_PTR       u_long
  56// -----------------------
  57
  58
  59
  60// HWM and OS-specific buffer definitions
  61// -----------------------
  62
  63// default number of receive buffers.
  64#define NUM_RECEIVE_BUFFERS             10
  65
  66// default number of transmit buffers.
  67#define NUM_TRANSMIT_BUFFERS            10
  68
  69// Number of SMT buffers (Mbufs).
  70#define NUM_SMT_BUF     4
  71
  72// Number of TXDs for asynchronous transmit queue.
  73#define HWM_ASYNC_TXD_COUNT     (NUM_TRANSMIT_BUFFERS + NUM_SMT_BUF)
  74
  75// Number of TXDs for synchronous transmit queue.
  76#define HWM_SYNC_TXD_COUNT      HWM_ASYNC_TXD_COUNT
  77
  78
  79// Number of RXDs for receive queue #1.
  80// Note: Workaround for ASIC Errata #7: One extra RXD is required.
  81#if (NUM_RECEIVE_BUFFERS > 100)
  82#define SMT_R1_RXD_COUNT        (1 + 100)
  83#else
  84#define SMT_R1_RXD_COUNT        (1 + NUM_RECEIVE_BUFFERS)
  85#endif
  86
  87// Number of RXDs for receive queue #2.
  88#define SMT_R2_RXD_COUNT        0       // Not used.
  89// -----------------------
  90
  91
  92
  93/*
  94 * OS-specific part of the transmit/receive descriptor structure (TXD/RXD).
  95 *
  96 * Note: The size of these structures must follow this rule:
  97 *
  98 *      sizeof(struct) + 2*sizeof(void*) == n * 16, n >= 1
  99 *
 100 * We use the dma_addr fields under Linux to keep track of the
 101 * DMA address of the packet data, for later pci_unmap_single. -DaveM
 102 */
 103
 104struct s_txd_os {       // os-specific part of transmit descriptor
 105        struct sk_buff *skb;
 106        dma_addr_t dma_addr;
 107} ;
 108
 109struct s_rxd_os {       // os-specific part of receive descriptor
 110        struct sk_buff *skb;
 111        dma_addr_t dma_addr;
 112} ;
 113
 114
 115/*
 116 * So we do not need to make too many modifications to the generic driver
 117 * parts, we take advantage of the AIX byte swapping macro interface.
 118 */
 119
 120#define AIX_REVERSE(x)          ((u32)le32_to_cpu((u32)(x)))
 121#define MDR_REVERSE(x)          ((u32)le32_to_cpu((u32)(x)))
 122