xref: /openbmc/linux/drivers/net/fddi/skfp/h/osdef1st.h (revision 2874c5fd)
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)))
122