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)))