2 * eth1394.h -- Ethernet driver for Linux IEEE-1394 Subsystem
4 * Copyright (C) 2000 Bonin Franck <boninf@free.fr>
5 * (C) 2001 Ben Collins <bcollins@debian.org>
7 * Mainly based on work by Emanuel Pirker and Andreas E. Bombe
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software Foundation,
21 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
27 #include <linux/netdevice.h>
31 /* Register for incoming packets. This is 4096 bytes, which supports up to
32 * S3200 (per Table 16-3 of IEEE 1394b-2002). */
33 #define ETHER1394_REGION_ADDR_LEN 4096
35 #define ETHER1394_INVALID_ADDR ~0ULL
37 /* GASP identifier numbers for IPv4 over IEEE 1394 */
38 #define ETHER1394_GASP_SPECIFIER_ID 0x00005E
39 #define ETHER1394_GASP_SPECIFIER_ID_HI ((ETHER1394_GASP_SPECIFIER_ID >> 8) & 0xffff)
40 #define ETHER1394_GASP_SPECIFIER_ID_LO (ETHER1394_GASP_SPECIFIER_ID & 0xff)
41 #define ETHER1394_GASP_VERSION 1
43 #define ETHER1394_GASP_OVERHEAD (2 * sizeof(quadlet_t)) /* GASP header overhead */
45 #define ETHER1394_GASP_BUFFERS 16
48 #define NODE_SET (ALL_NODES + 1)
50 enum eth1394_bc_states { ETHER1394_BC_ERROR,
52 ETHER1394_BC_STOPPED };
55 /* Private structure for our ethernet driver */
57 struct net_device_stats stats; /* Device stats */
58 struct hpsb_host *host; /* The card for this dev */
59 u16 bc_maxpayload; /* Max broadcast payload */
60 u8 bc_sspd; /* Max broadcast speed */
61 u64 local_fifo; /* Local FIFO Address */
62 spinlock_t lock; /* Private lock */
63 int broadcast_channel; /* Async stream Broadcast Channel */
64 enum eth1394_bc_states bc_state; /* broadcast channel state */
65 struct hpsb_iso *iso; /* Async stream recv handle */
66 int bc_dgl; /* Outgoing broadcast datagram label */
67 struct list_head ip_node_list; /* List of IP capable nodes */
68 struct unit_directory *ud_list[ALL_NODES]; /* Cached unit dir list */
72 /* Define a fake hardware header format for the networking core. Note that
73 * header size cannot exceed 16 bytes as that is the size of the header cache.
74 * Also, we do not need the source address in the header so we omit it and
75 * keep the header to under 16 bytes */
76 #define ETH1394_ALEN (8)
77 #define ETH1394_HLEN (10)
80 unsigned char h_dest[ETH1394_ALEN]; /* destination eth1394 addr */
81 unsigned short h_proto; /* packet type ID field */
82 } __attribute__((packed));
86 typedef enum {ETH1394_GASP, ETH1394_WRREQ} eth1394_tx_type;
89 #include <asm/byteorder.h>
92 #if defined __BIG_ENDIAN_BITFIELD
93 struct eth1394_uf_hdr {
96 u16 ether_type; /* Ethernet packet type */
97 } __attribute__((packed));
98 #elif defined __LITTLE_ENDIAN_BITFIELD
99 struct eth1394_uf_hdr {
103 } __attribute__((packed));
105 #error Unknown bit field type
109 #if defined __BIG_ENDIAN_BITFIELD
110 struct eth1394_ff_hdr {
113 u16 dg_size:12; /* Datagram size */
114 u16 ether_type; /* Ethernet packet type */
115 u16 dgl; /* Datagram label */
117 } __attribute__((packed));
118 #elif defined __LITTLE_ENDIAN_BITFIELD
119 struct eth1394_ff_hdr {
126 } __attribute__((packed));
128 #error Unknown bit field type
131 /* XXX: Subsequent fragments, including last */
132 #if defined __BIG_ENDIAN_BITFIELD
133 struct eth1394_sf_hdr {
136 u16 dg_size:12; /* Datagram size */
138 u16 fg_off:12; /* Fragment offset */
139 u16 dgl; /* Datagram label */
141 } __attribute__((packed));
142 #elif defined __LITTLE_ENDIAN_BITFIELD
143 struct eth1394_sf_hdr {
151 } __attribute__((packed));
153 #error Unknown bit field type
156 #if defined __BIG_ENDIAN_BITFIELD
157 struct eth1394_common_hdr {
160 } __attribute__((packed));
161 #elif defined __LITTLE_ENDIAN_BITFIELD
162 struct eth1394_common_hdr {
165 } __attribute__((packed));
167 #error Unknown bit field type
170 struct eth1394_hdr_words {
178 struct eth1394_common_hdr common;
179 struct eth1394_uf_hdr uf;
180 struct eth1394_ff_hdr ff;
181 struct eth1394_sf_hdr sf;
182 struct eth1394_hdr_words words;
185 /* End of IP1394 headers */
188 #define ETH1394_HDR_LF_UF 0 /* unfragmented */
189 #define ETH1394_HDR_LF_FF 1 /* first fragment */
190 #define ETH1394_HDR_LF_LF 2 /* last fragment */
191 #define ETH1394_HDR_LF_IF 3 /* interior fragment */
193 #define IP1394_HW_ADDR_LEN 16 /* As per RFC */
195 /* Our arp packet (ARPHRD_IEEE1394) */
197 u16 hw_type; /* 0x0018 */
198 u16 proto_type; /* 0x0806 */
199 u8 hw_addr_len; /* 16 */
200 u8 ip_addr_len; /* 4 */
201 u16 opcode; /* ARP Opcode */
202 /* Above is exactly the same format as struct arphdr */
204 u64 s_uniq_id; /* Sender's 64bit EUI */
205 u8 max_rec; /* Sender's max packet size */
206 u8 sspd; /* Sender's max speed */
207 u16 fifo_hi; /* hi 16bits of sender's FIFO addr */
208 u32 fifo_lo; /* lo 32bits of sender's FIFO addr */
209 u32 sip; /* Sender's IP Address */
210 u32 tip; /* IP Address of requested hw addr */
213 /* Network timeout */
214 #define ETHER1394_TIMEOUT 100000
216 /* This is our task struct. It's used for the packet complete callback. */
219 int outstanding_pkts;
220 eth1394_tx_type tx_type;
222 struct hpsb_packet *packet;
223 struct eth1394_priv *priv;
224 union eth1394_hdr hdr;
229 #endif /* __ETH1394_H */