tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * PS3 Platfom gelic network driver.
3 *
4 * Copyright (C) 2007 Sony Computer Entertainment Inc.
5 * Copyright 2006, 2007 Sony Corporation.
6 *
7 * This file is based on: spider_net.h
8 *
9 * (C) Copyright IBM Corp. 2005
10 *
11 * Authors : Utz Bacher <utz.bacher@de.ibm.com>
12 * Jens Osterkamp <Jens.Osterkamp@de.ibm.com>
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2, or (at your option)
17 * any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 */
28#ifndef _GELIC_NET_H
29#define _GELIC_NET_H
30
31/* descriptors */
32#define GELIC_NET_RX_DESCRIPTORS 128 /* num of descriptors */
33#define GELIC_NET_TX_DESCRIPTORS 128 /* num of descriptors */
34
35#define GELIC_NET_MAX_MTU VLAN_ETH_FRAME_LEN
36#define GELIC_NET_MIN_MTU VLAN_ETH_ZLEN
37#define GELIC_NET_RXBUF_ALIGN 128
38#define GELIC_CARD_RX_CSUM_DEFAULT 1 /* hw chksum */
39#define GELIC_NET_WATCHDOG_TIMEOUT 5*HZ
40#define GELIC_NET_NAPI_WEIGHT (GELIC_NET_RX_DESCRIPTORS)
41#define GELIC_NET_BROADCAST_ADDR 0xffffffffffffL
42
43#define GELIC_NET_MC_COUNT_MAX 32 /* multicast address list */
44
45/* virtual interrupt status register bits */
46 /* INT1 */
47#define GELIC_CARD_TX_RAM_FULL_ERR 0x0000000000000001L
48#define GELIC_CARD_RX_RAM_FULL_ERR 0x0000000000000002L
49#define GELIC_CARD_TX_SHORT_FRAME_ERR 0x0000000000000004L
50#define GELIC_CARD_TX_INVALID_DESCR_ERR 0x0000000000000008L
51#define GELIC_CARD_RX_FIFO_FULL_ERR 0x0000000000002000L
52#define GELIC_CARD_RX_DESCR_CHAIN_END 0x0000000000004000L
53#define GELIC_CARD_RX_INVALID_DESCR_ERR 0x0000000000008000L
54#define GELIC_CARD_TX_RESPONCE_ERR 0x0000000000010000L
55#define GELIC_CARD_RX_RESPONCE_ERR 0x0000000000100000L
56#define GELIC_CARD_TX_PROTECTION_ERR 0x0000000000400000L
57#define GELIC_CARD_RX_PROTECTION_ERR 0x0000000004000000L
58#define GELIC_CARD_TX_TCP_UDP_CHECKSUM_ERR 0x0000000008000000L
59#define GELIC_CARD_PORT_STATUS_CHANGED 0x0000000020000000L
60#define GELIC_CARD_WLAN_EVENT_RECEIVED 0x0000000040000000L
61#define GELIC_CARD_WLAN_COMMAND_COMPLETED 0x0000000080000000L
62 /* INT 0 */
63#define GELIC_CARD_TX_FLAGGED_DESCR 0x0004000000000000L
64#define GELIC_CARD_RX_FLAGGED_DESCR 0x0040000000000000L
65#define GELIC_CARD_TX_TRANSFER_END 0x0080000000000000L
66#define GELIC_CARD_TX_DESCR_CHAIN_END 0x0100000000000000L
67#define GELIC_CARD_NUMBER_OF_RX_FRAME 0x1000000000000000L
68#define GELIC_CARD_ONE_TIME_COUNT_TIMER 0x4000000000000000L
69#define GELIC_CARD_FREE_RUN_COUNT_TIMER 0x8000000000000000L
70
71/* initial interrupt mask */
72#define GELIC_CARD_TXINT GELIC_CARD_TX_DESCR_CHAIN_END
73
74#define GELIC_CARD_RXINT (GELIC_CARD_RX_DESCR_CHAIN_END | \
75 GELIC_CARD_NUMBER_OF_RX_FRAME)
76
77 /* RX descriptor data_status bits */
78enum gelic_descr_rx_status {
79 GELIC_DESCR_RXDMADU = 0x80000000, /* destination MAC addr unknown */
80 GELIC_DESCR_RXLSTFBF = 0x40000000, /* last frame buffer */
81 GELIC_DESCR_RXIPCHK = 0x20000000, /* IP checksum performed */
82 GELIC_DESCR_RXTCPCHK = 0x10000000, /* TCP/UDP checksup performed */
83 GELIC_DESCR_RXWTPKT = 0x00C00000, /*
84 * wakeup trigger packet
85 * 01: Magic Packet (TM)
86 * 10: ARP packet
87 * 11: Multicast MAC addr
88 */
89 GELIC_DESCR_RXVLNPKT = 0x00200000, /* VLAN packet */
90 /* bit 20..16 reserved */
91 GELIC_DESCR_RXRRECNUM = 0x0000ff00, /* reception receipt number */
92 /* bit 7..0 reserved */
93};
94
95#define GELIC_DESCR_DATA_STATUS_CHK_MASK \
96 (GELIC_DESCR_RXIPCHK | GELIC_DESCR_RXTCPCHK)
97
98 /* TX descriptor data_status bits */
99enum gelic_descr_tx_status {
100 GELIC_DESCR_TX_TAIL = 0x00000001, /* gelic treated this
101 * descriptor was end of
102 * a tx frame
103 */
104};
105
106/* RX descriptor data error bits */
107enum gelic_descr_rx_error {
108 /* bit 31 reserved */
109 GELIC_DESCR_RXALNERR = 0x40000000, /* alignement error 10/100M */
110 GELIC_DESCR_RXOVERERR = 0x20000000, /* oversize error */
111 GELIC_DESCR_RXRNTERR = 0x10000000, /* Runt error */
112 GELIC_DESCR_RXIPCHKERR = 0x08000000, /* IP checksum error */
113 GELIC_DESCR_RXTCPCHKERR = 0x04000000, /* TCP/UDP checksum error */
114 GELIC_DESCR_RXDRPPKT = 0x00100000, /* drop packet */
115 GELIC_DESCR_RXIPFMTERR = 0x00080000, /* IP packet format error */
116 /* bit 18 reserved */
117 GELIC_DESCR_RXDATAERR = 0x00020000, /* IP packet format error */
118 GELIC_DESCR_RXCALERR = 0x00010000, /* cariier extension length
119 * error */
120 GELIC_DESCR_RXCREXERR = 0x00008000, /* carrier extention error */
121 GELIC_DESCR_RXMLTCST = 0x00004000, /* multicast address frame */
122 /* bit 13..0 reserved */
123};
124#define GELIC_DESCR_DATA_ERROR_CHK_MASK \
125 (GELIC_DESCR_RXIPCHKERR | GELIC_DESCR_RXTCPCHKERR)
126
127/* DMA command and status (RX and TX)*/
128enum gelic_descr_dma_status {
129 GELIC_DESCR_DMA_COMPLETE = 0x00000000, /* used in tx */
130 GELIC_DESCR_DMA_BUFFER_FULL = 0x00000000, /* used in rx */
131 GELIC_DESCR_DMA_RESPONSE_ERROR = 0x10000000, /* used in rx, tx */
132 GELIC_DESCR_DMA_PROTECTION_ERROR = 0x20000000, /* used in rx, tx */
133 GELIC_DESCR_DMA_FRAME_END = 0x40000000, /* used in rx */
134 GELIC_DESCR_DMA_FORCE_END = 0x50000000, /* used in rx, tx */
135 GELIC_DESCR_DMA_CARDOWNED = 0xa0000000, /* used in rx, tx */
136 GELIC_DESCR_DMA_NOT_IN_USE = 0xb0000000, /* any other value */
137};
138
139#define GELIC_DESCR_DMA_STAT_MASK (0xf0000000)
140
141/* tx descriptor command and status */
142enum gelic_descr_tx_dma_status {
143 /* [19] */
144 GELIC_DESCR_TX_DMA_IKE = 0x00080000, /* IPSEC off */
145 /* [18] */
146 GELIC_DESCR_TX_DMA_FRAME_TAIL = 0x00040000, /* last descriptor of
147 * the packet
148 */
149 /* [17..16] */
150 GELIC_DESCR_TX_DMA_TCP_CHKSUM = 0x00020000, /* TCP packet */
151 GELIC_DESCR_TX_DMA_UDP_CHKSUM = 0x00030000, /* UDP packet */
152 GELIC_DESCR_TX_DMA_NO_CHKSUM = 0x00000000, /* no checksum */
153
154 /* [1] */
155 GELIC_DESCR_TX_DMA_CHAIN_END = 0x00000002, /* DMA terminated
156 * due to chain end
157 */
158};
159
160#define GELIC_DESCR_DMA_CMD_NO_CHKSUM \
161 (GELIC_DESCR_DMA_CARDOWNED | GELIC_DESCR_TX_DMA_IKE | \
162 GELIC_DESCR_TX_DMA_NO_CHKSUM)
163
164#define GELIC_DESCR_DMA_CMD_TCP_CHKSUM \
165 (GELIC_DESCR_DMA_CARDOWNED | GELIC_DESCR_TX_DMA_IKE | \
166 GELIC_DESCR_TX_DMA_TCP_CHKSUM)
167
168#define GELIC_DESCR_DMA_CMD_UDP_CHKSUM \
169 (GELIC_DESCR_DMA_CARDOWNED | GELIC_DESCR_TX_DMA_IKE | \
170 GELIC_DESCR_TX_DMA_UDP_CHKSUM)
171
172enum gelic_descr_rx_dma_status {
173 /* [ 1 ] */
174 GELIC_DESCR_RX_DMA_CHAIN_END = 0x00000002, /* DMA terminated
175 * due to chain end
176 */
177};
178
179/* for lv1_net_control */
180enum gelic_lv1_net_control_code {
181 GELIC_LV1_GET_MAC_ADDRESS = 1,
182 GELIC_LV1_GET_ETH_PORT_STATUS = 2,
183 GELIC_LV1_SET_NEGOTIATION_MODE = 3,
184 GELIC_LV1_GET_VLAN_ID = 4,
185 GELIC_LV1_GET_CHANNEL = 6,
186 GELIC_LV1_POST_WLAN_CMD = 9,
187 GELIC_LV1_GET_WLAN_CMD_RESULT = 10,
188 GELIC_LV1_GET_WLAN_EVENT = 11
189};
190
191/* status returened from GET_ETH_PORT_STATUS */
192enum gelic_lv1_ether_port_status {
193 GELIC_LV1_ETHER_LINK_UP = 0x0000000000000001L,
194 GELIC_LV1_ETHER_FULL_DUPLEX = 0x0000000000000002L,
195 GELIC_LV1_ETHER_AUTO_NEG = 0x0000000000000004L,
196
197 GELIC_LV1_ETHER_SPEED_10 = 0x0000000000000010L,
198 GELIC_LV1_ETHER_SPEED_100 = 0x0000000000000020L,
199 GELIC_LV1_ETHER_SPEED_1000 = 0x0000000000000040L,
200 GELIC_LV1_ETHER_SPEED_MASK = 0x0000000000000070L
201};
202
203enum gelic_lv1_vlan_index {
204 /* for outgoing packets */
205 GELIC_LV1_VLAN_TX_ETHERNET = 0x0000000000000002L,
206 GELIC_LV1_VLAN_TX_WIRELESS = 0x0000000000000003L,
207 /* for incoming packets */
208 GELIC_LV1_VLAN_RX_ETHERNET = 0x0000000000000012L,
209 GELIC_LV1_VLAN_RX_WIRELESS = 0x0000000000000013L
210};
211
212/* size of hardware part of gelic descriptor */
213#define GELIC_DESCR_SIZE (32)
214
215enum gelic_port_type {
216 GELIC_PORT_ETHERNET = 0,
217 GELIC_PORT_WIRELESS = 1,
218 GELIC_PORT_MAX
219};
220
221struct gelic_descr {
222 /* as defined by the hardware */
223 __be32 buf_addr;
224 __be32 buf_size;
225 __be32 next_descr_addr;
226 __be32 dmac_cmd_status;
227 __be32 result_size;
228 __be32 valid_size; /* all zeroes for tx */
229 __be32 data_status;
230 __be32 data_error; /* all zeroes for tx */
231
232 /* used in the driver */
233 struct sk_buff *skb;
234 dma_addr_t bus_addr;
235 struct gelic_descr *next;
236 struct gelic_descr *prev;
237} __attribute__((aligned(32)));
238
239struct gelic_descr_chain {
240 /* we walk from tail to head */
241 struct gelic_descr *head;
242 struct gelic_descr *tail;
243};
244
245struct gelic_vlan_id {
246 u16 tx;
247 u16 rx;
248};
249
250struct gelic_card {
251 struct napi_struct napi;
252 struct net_device *netdev[GELIC_PORT_MAX];
253 /*
254 * hypervisor requires irq_status should be
255 * 8 bytes aligned, but u64 member is
256 * always disposed in that manner
257 */
258 u64 irq_status;
259 u64 irq_mask;
260
261 struct ps3_system_bus_device *dev;
262 struct gelic_vlan_id vlan[GELIC_PORT_MAX];
263 int vlan_required;
264
265 struct gelic_descr_chain tx_chain;
266 struct gelic_descr_chain rx_chain;
267 int rx_dma_restart_required;
268 int rx_csum;
269 /*
270 * tx_lock guards tx descriptor list and
271 * tx_dma_progress.
272 */
273 spinlock_t tx_lock;
274 int tx_dma_progress;
275
276 struct work_struct tx_timeout_task;
277 atomic_t tx_timeout_task_counter;
278 wait_queue_head_t waitq;
279
280 /* only first user should up the card */
281 struct semaphore updown_lock;
282 atomic_t users;
283
284 u64 ether_port_status;
285 /* original address returned by kzalloc */
286 void *unalign;
287
288 /*
289 * each netdevice has copy of irq
290 */
291 unsigned int irq;
292 struct gelic_descr *tx_top, *rx_top;
293 struct gelic_descr descr[0]; /* must be the last */
294};
295
296struct gelic_port {
297 struct gelic_card *card;
298 struct net_device *netdev;
299 enum gelic_port_type type;
300 long priv[0]; /* long for alignment */
301};
302
303static inline struct gelic_card *port_to_card(struct gelic_port *p)
304{
305 return p->card;
306}
307static inline struct net_device *port_to_netdev(struct gelic_port *p)
308{
309 return p->netdev;
310}
311static inline struct gelic_card *netdev_card(struct net_device *d)
312{
313 return ((struct gelic_port *)netdev_priv(d))->card;
314}
315static inline struct gelic_port *netdev_port(struct net_device *d)
316{
317 return (struct gelic_port *)netdev_priv(d);
318}
319static inline struct device *ctodev(struct gelic_card *card)
320{
321 return &card->dev->core;
322}
323static inline u64 bus_id(struct gelic_card *card)
324{
325 return card->dev->bus_id;
326}
327static inline u64 dev_id(struct gelic_card *card)
328{
329 return card->dev->dev_id;
330}
331
332static inline void *port_priv(struct gelic_port *port)
333{
334 return port->priv;
335}
336
337extern int gelic_card_set_irq_mask(struct gelic_card *card, u64 mask);
338/* shared netdev ops */
339extern void gelic_card_up(struct gelic_card *card);
340extern void gelic_card_down(struct gelic_card *card);
341extern int gelic_net_open(struct net_device *netdev);
342extern int gelic_net_stop(struct net_device *netdev);
343extern int gelic_net_xmit(struct sk_buff *skb, struct net_device *netdev);
344extern void gelic_net_set_multi(struct net_device *netdev);
345extern void gelic_net_tx_timeout(struct net_device *netdev);
346extern int gelic_net_change_mtu(struct net_device *netdev, int new_mtu);
347extern int gelic_net_setup_netdev(struct net_device *netdev,
348 struct gelic_card *card);
349
350/* shared ethtool ops */
351extern void gelic_net_get_drvinfo(struct net_device *netdev,
352 struct ethtool_drvinfo *info);
353extern u32 gelic_net_get_rx_csum(struct net_device *netdev);
354extern int gelic_net_set_rx_csum(struct net_device *netdev, u32 data);
355extern void gelic_net_poll_controller(struct net_device *netdev);
356
357#endif /* _GELIC_NET_H */