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Diffstat (limited to 'drivers/ieee1394/eth1394.h')
| -rw-r--r-- | drivers/ieee1394/eth1394.h | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/drivers/ieee1394/eth1394.h b/drivers/ieee1394/eth1394.h new file mode 100644 index 00000000000..ed8f1c4b7fd --- /dev/null +++ b/drivers/ieee1394/eth1394.h @@ -0,0 +1,236 @@ +/* + * eth1394.h -- Ethernet driver for Linux IEEE-1394 Subsystem + * + * Copyright (C) 2000 Bonin Franck <boninf@free.fr> + * (C) 2001 Ben Collins <bcollins@debian.org> + * + * Mainly based on work by Emanuel Pirker and Andreas E. Bombe + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#ifndef __ETH1394_H +#define __ETH1394_H + +#include <linux/netdevice.h> + +#include "ieee1394.h" + +/* Register for incoming packets. This is 4096 bytes, which supports up to + * S3200 (per Table 16-3 of IEEE 1394b-2002). */ +#define ETHER1394_REGION_ADDR_LEN 4096 + +#define ETHER1394_INVALID_ADDR ~0ULL + +/* GASP identifier numbers for IPv4 over IEEE 1394 */ +#define ETHER1394_GASP_SPECIFIER_ID 0x00005E +#define ETHER1394_GASP_SPECIFIER_ID_HI ((ETHER1394_GASP_SPECIFIER_ID >> 8) & 0xffff) +#define ETHER1394_GASP_SPECIFIER_ID_LO (ETHER1394_GASP_SPECIFIER_ID & 0xff) +#define ETHER1394_GASP_VERSION 1 + +#define ETHER1394_GASP_OVERHEAD (2 * sizeof(quadlet_t)) /* GASP header overhead */ + +#define ETHER1394_GASP_BUFFERS 16 + +/* Node set == 64 */ +#define NODE_SET (ALL_NODES + 1) + +enum eth1394_bc_states { ETHER1394_BC_ERROR, + ETHER1394_BC_RUNNING, + ETHER1394_BC_STOPPED }; + + +/* Private structure for our ethernet driver */ +struct eth1394_priv { + struct net_device_stats stats; /* Device stats */ + struct hpsb_host *host; /* The card for this dev */ + u16 bc_maxpayload; /* Max broadcast payload */ + u8 bc_sspd; /* Max broadcast speed */ + u64 local_fifo; /* Local FIFO Address */ + spinlock_t lock; /* Private lock */ + int broadcast_channel; /* Async stream Broadcast Channel */ + enum eth1394_bc_states bc_state; /* broadcast channel state */ + struct hpsb_iso *iso; /* Async stream recv handle */ + int bc_dgl; /* Outgoing broadcast datagram label */ + struct list_head ip_node_list; /* List of IP capable nodes */ + struct unit_directory *ud_list[ALL_NODES]; /* Cached unit dir list */ +}; + + +/* Define a fake hardware header format for the networking core. Note that + * header size cannot exceed 16 bytes as that is the size of the header cache. + * Also, we do not need the source address in the header so we omit it and + * keep the header to under 16 bytes */ +#define ETH1394_ALEN (8) +#define ETH1394_HLEN (10) + +struct eth1394hdr { + unsigned char h_dest[ETH1394_ALEN]; /* destination eth1394 addr */ + unsigned short h_proto; /* packet type ID field */ +} __attribute__((packed)); + +#ifdef __KERNEL__ +#include <linux/skbuff.h> + +static inline struct eth1394hdr *eth1394_hdr(const struct sk_buff *skb) +{ + return (struct eth1394hdr *)skb->mac.raw; +} +#endif + +typedef enum {ETH1394_GASP, ETH1394_WRREQ} eth1394_tx_type; + +/* IP1394 headers */ +#include <asm/byteorder.h> + +/* Unfragmented */ +#if defined __BIG_ENDIAN_BITFIELD +struct eth1394_uf_hdr { + u16 lf:2; + u16 res:14; + u16 ether_type; /* Ethernet packet type */ +} __attribute__((packed)); +#elif defined __LITTLE_ENDIAN_BITFIELD +struct eth1394_uf_hdr { + u16 res:14; + u16 lf:2; + u16 ether_type; +} __attribute__((packed)); +#else +#error Unknown bit field type +#endif + +/* First fragment */ +#if defined __BIG_ENDIAN_BITFIELD +struct eth1394_ff_hdr { + u16 lf:2; + u16 res1:2; + u16 dg_size:12; /* Datagram size */ + u16 ether_type; /* Ethernet packet type */ + u16 dgl; /* Datagram label */ + u16 res2; +} __attribute__((packed)); +#elif defined __LITTLE_ENDIAN_BITFIELD +struct eth1394_ff_hdr { + u16 dg_size:12; + u16 res1:2; + u16 lf:2; + u16 ether_type; + u16 dgl; + u16 res2; +} __attribute__((packed)); +#else +#error Unknown bit field type +#endif + +/* XXX: Subsequent fragments, including last */ +#if defined __BIG_ENDIAN_BITFIELD +struct eth1394_sf_hdr { + u16 lf:2; + u16 res1:2; + u16 dg_size:12; /* Datagram size */ + u16 res2:4; + u16 fg_off:12; /* Fragment offset */ + u16 dgl; /* Datagram label */ + u16 res3; +} __attribute__((packed)); +#elif defined __LITTLE_ENDIAN_BITFIELD +struct eth1394_sf_hdr { + u16 dg_size:12; + u16 res1:2; + u16 lf:2; + u16 fg_off:12; + u16 res2:4; + u16 dgl; + u16 res3; +} __attribute__((packed)); +#else +#error Unknown bit field type +#endif + +#if defined __BIG_ENDIAN_BITFIELD +struct eth1394_common_hdr { + u16 lf:2; + u16 pad1:14; +} __attribute__((packed)); +#elif defined __LITTLE_ENDIAN_BITFIELD +struct eth1394_common_hdr { + u16 pad1:14; + u16 lf:2; +} __attribute__((packed)); +#else +#error Unknown bit field type +#endif + +struct eth1394_hdr_words { + u16 word1; + u16 word2; + u16 word3; + u16 word4; +}; + +union eth1394_hdr { + struct eth1394_common_hdr common; + struct eth1394_uf_hdr uf; + struct eth1394_ff_hdr ff; + struct eth1394_sf_hdr sf; + struct eth1394_hdr_words words; +}; + +/* End of IP1394 headers */ + +/* Fragment types */ +#define ETH1394_HDR_LF_UF 0 /* unfragmented */ +#define ETH1394_HDR_LF_FF 1 /* first fragment */ +#define ETH1394_HDR_LF_LF 2 /* last fragment */ +#define ETH1394_HDR_LF_IF 3 /* interior fragment */ + +#define IP1394_HW_ADDR_LEN 16 /* As per RFC */ + +/* Our arp packet (ARPHRD_IEEE1394) */ +struct eth1394_arp { + u16 hw_type; /* 0x0018 */ + u16 proto_type; /* 0x0806 */ + u8 hw_addr_len; /* 16 */ + u8 ip_addr_len; /* 4 */ + u16 opcode; /* ARP Opcode */ + /* Above is exactly the same format as struct arphdr */ + + u64 s_uniq_id; /* Sender's 64bit EUI */ + u8 max_rec; /* Sender's max packet size */ + u8 sspd; /* Sender's max speed */ + u16 fifo_hi; /* hi 16bits of sender's FIFO addr */ + u32 fifo_lo; /* lo 32bits of sender's FIFO addr */ + u32 sip; /* Sender's IP Address */ + u32 tip; /* IP Address of requested hw addr */ +}; + +/* Network timeout */ +#define ETHER1394_TIMEOUT 100000 + +/* This is our task struct. It's used for the packet complete callback. */ +struct packet_task { + struct sk_buff *skb; + int outstanding_pkts; + eth1394_tx_type tx_type; + int max_payload; + struct hpsb_packet *packet; + struct eth1394_priv *priv; + union eth1394_hdr hdr; + u64 addr; + u16 dest_node; +}; + +#endif /* __ETH1394_H */ |