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
 104 struct s_txd_os {       // os-specific part of transmit descriptor
 105         struct sk_buff *skb;
 106         dma_addr_t dma_addr;
 107 } ;
 108
 109 struct 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)))