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_BROADCAST_ADDR        0xffffffffffffL
41 
42 #define GELIC_NET_MC_COUNT_MAX          32 /* multicast address list */
43 
44 /* virtual interrupt status register bits */
45 	/* INT1 */
46 #define GELIC_CARD_TX_RAM_FULL_ERR           0x0000000000000001L
47 #define GELIC_CARD_RX_RAM_FULL_ERR           0x0000000000000002L
48 #define GELIC_CARD_TX_SHORT_FRAME_ERR        0x0000000000000004L
49 #define GELIC_CARD_TX_INVALID_DESCR_ERR      0x0000000000000008L
50 #define GELIC_CARD_RX_FIFO_FULL_ERR          0x0000000000002000L
51 #define GELIC_CARD_RX_DESCR_CHAIN_END        0x0000000000004000L
52 #define GELIC_CARD_RX_INVALID_DESCR_ERR      0x0000000000008000L
53 #define GELIC_CARD_TX_RESPONCE_ERR           0x0000000000010000L
54 #define GELIC_CARD_RX_RESPONCE_ERR           0x0000000000100000L
55 #define GELIC_CARD_TX_PROTECTION_ERR         0x0000000000400000L
56 #define GELIC_CARD_RX_PROTECTION_ERR         0x0000000004000000L
57 #define GELIC_CARD_TX_TCP_UDP_CHECKSUM_ERR   0x0000000008000000L
58 #define GELIC_CARD_PORT_STATUS_CHANGED       0x0000000020000000L
59 #define GELIC_CARD_WLAN_EVENT_RECEIVED       0x0000000040000000L
60 #define GELIC_CARD_WLAN_COMMAND_COMPLETED    0x0000000080000000L
61 	/* INT 0 */
62 #define GELIC_CARD_TX_FLAGGED_DESCR          0x0004000000000000L
63 #define GELIC_CARD_RX_FLAGGED_DESCR          0x0040000000000000L
64 #define GELIC_CARD_TX_TRANSFER_END           0x0080000000000000L
65 #define GELIC_CARD_TX_DESCR_CHAIN_END        0x0100000000000000L
66 #define GELIC_CARD_NUMBER_OF_RX_FRAME        0x1000000000000000L
67 #define GELIC_CARD_ONE_TIME_COUNT_TIMER      0x4000000000000000L
68 #define GELIC_CARD_FREE_RUN_COUNT_TIMER      0x8000000000000000L
69 
70 /* initial interrupt mask */
71 #define GELIC_CARD_TXINT	GELIC_CARD_TX_DESCR_CHAIN_END
72 
73 #define GELIC_CARD_RXINT	(GELIC_CARD_RX_DESCR_CHAIN_END | \
74 				 GELIC_CARD_NUMBER_OF_RX_FRAME)
75 
76  /* RX descriptor data_status bits */
77 enum gelic_descr_rx_status {
78 	GELIC_DESCR_RXDMADU	= 0x80000000, /* destination MAC addr unknown */
79 	GELIC_DESCR_RXLSTFBF	= 0x40000000, /* last frame buffer            */
80 	GELIC_DESCR_RXIPCHK	= 0x20000000, /* IP checksum performed        */
81 	GELIC_DESCR_RXTCPCHK	= 0x10000000, /* TCP/UDP checksup performed   */
82 	GELIC_DESCR_RXWTPKT	= 0x00C00000, /*
83 					       * wakeup trigger packet
84 					       * 01: Magic Packet (TM)
85 					       * 10: ARP packet
86 					       * 11: Multicast MAC addr
87 					       */
88 	GELIC_DESCR_RXVLNPKT	= 0x00200000, /* VLAN packet */
89 	/* bit 20..16 reserved */
90 	GELIC_DESCR_RXRRECNUM	= 0x0000ff00, /* reception receipt number */
91 	/* bit 7..0 reserved */
92 };
93 
94 #define GELIC_DESCR_DATA_STATUS_CHK_MASK	\
95 	(GELIC_DESCR_RXIPCHK | GELIC_DESCR_RXTCPCHK)
96 
97  /* TX descriptor data_status bits */
98 enum gelic_descr_tx_status {
99 	GELIC_DESCR_TX_TAIL	= 0x00000001, /* gelic treated this
100 					       * descriptor was end of
101 					       * a tx frame
102 					       */
103 };
104 
105 /* RX descriptor data error bits */
106 enum gelic_descr_rx_error {
107 	/* bit 31 reserved */
108 	GELIC_DESCR_RXALNERR	= 0x40000000, /* alignement error 10/100M */
109 	GELIC_DESCR_RXOVERERR	= 0x20000000, /* oversize error */
110 	GELIC_DESCR_RXRNTERR	= 0x10000000, /* Runt error */
111 	GELIC_DESCR_RXIPCHKERR	= 0x08000000, /* IP checksum  error */
112 	GELIC_DESCR_RXTCPCHKERR	= 0x04000000, /* TCP/UDP checksum  error */
113 	GELIC_DESCR_RXDRPPKT	= 0x00100000, /* drop packet */
114 	GELIC_DESCR_RXIPFMTERR	= 0x00080000, /* IP packet format error */
115 	/* bit 18 reserved */
116 	GELIC_DESCR_RXDATAERR	= 0x00020000, /* IP packet format error */
117 	GELIC_DESCR_RXCALERR	= 0x00010000, /* cariier extension length
118 					      * error */
119 	GELIC_DESCR_RXCREXERR	= 0x00008000, /* carrier extension error */
120 	GELIC_DESCR_RXMLTCST	= 0x00004000, /* multicast address frame */
121 	/* bit 13..0 reserved */
122 };
123 #define GELIC_DESCR_DATA_ERROR_CHK_MASK		\
124 	(GELIC_DESCR_RXIPCHKERR | GELIC_DESCR_RXTCPCHKERR)
125 
126 /* DMA command and status (RX and TX)*/
127 enum gelic_descr_dma_status {
128 	GELIC_DESCR_DMA_COMPLETE            = 0x00000000, /* used in tx */
129 	GELIC_DESCR_DMA_BUFFER_FULL         = 0x00000000, /* used in rx */
130 	GELIC_DESCR_DMA_RESPONSE_ERROR      = 0x10000000, /* used in rx, tx */
131 	GELIC_DESCR_DMA_PROTECTION_ERROR    = 0x20000000, /* used in rx, tx */
132 	GELIC_DESCR_DMA_FRAME_END           = 0x40000000, /* used in rx */
133 	GELIC_DESCR_DMA_FORCE_END           = 0x50000000, /* used in rx, tx */
134 	GELIC_DESCR_DMA_CARDOWNED           = 0xa0000000, /* used in rx, tx */
135 	GELIC_DESCR_DMA_NOT_IN_USE          = 0xb0000000, /* any other value */
136 };
137 
138 #define GELIC_DESCR_DMA_STAT_MASK	(0xf0000000)
139 
140 /* tx descriptor command and status */
141 enum gelic_descr_tx_dma_status {
142 	/* [19] */
143 	GELIC_DESCR_TX_DMA_IKE		= 0x00080000, /* IPSEC off */
144 	/* [18] */
145 	GELIC_DESCR_TX_DMA_FRAME_TAIL	= 0x00040000, /* last descriptor of
146 						       * the packet
147 						       */
148 	/* [17..16] */
149 	GELIC_DESCR_TX_DMA_TCP_CHKSUM	= 0x00020000, /* TCP packet */
150 	GELIC_DESCR_TX_DMA_UDP_CHKSUM	= 0x00030000, /* UDP packet */
151 	GELIC_DESCR_TX_DMA_NO_CHKSUM	= 0x00000000, /* no checksum */
152 
153 	/* [1] */
154 	GELIC_DESCR_TX_DMA_CHAIN_END	= 0x00000002, /* DMA terminated
155 						       * due to chain end
156 						       */
157 };
158 
159 #define GELIC_DESCR_DMA_CMD_NO_CHKSUM	\
160 	(GELIC_DESCR_DMA_CARDOWNED | GELIC_DESCR_TX_DMA_IKE | \
161 	GELIC_DESCR_TX_DMA_NO_CHKSUM)
162 
163 #define GELIC_DESCR_DMA_CMD_TCP_CHKSUM	\
164 	(GELIC_DESCR_DMA_CARDOWNED | GELIC_DESCR_TX_DMA_IKE | \
165 	GELIC_DESCR_TX_DMA_TCP_CHKSUM)
166 
167 #define GELIC_DESCR_DMA_CMD_UDP_CHKSUM	\
168 	(GELIC_DESCR_DMA_CARDOWNED | GELIC_DESCR_TX_DMA_IKE | \
169 	GELIC_DESCR_TX_DMA_UDP_CHKSUM)
170 
171 enum gelic_descr_rx_dma_status {
172 	/* [ 1 ] */
173 	GELIC_DESCR_RX_DMA_CHAIN_END	= 0x00000002, /* DMA terminated
174 						       * due to chain end
175 						       */
176 };
177 
178 /* for lv1_net_control */
179 enum gelic_lv1_net_control_code {
180 	GELIC_LV1_GET_MAC_ADDRESS	= 1,
181 	GELIC_LV1_GET_ETH_PORT_STATUS	= 2,
182 	GELIC_LV1_SET_NEGOTIATION_MODE	= 3,
183 	GELIC_LV1_GET_VLAN_ID		= 4,
184 	GELIC_LV1_SET_WOL		= 5,
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 /* for GELIC_LV1_SET_WOL */
192 enum gelic_lv1_wol_command {
193 	GELIC_LV1_WOL_MAGIC_PACKET	= 1,
194 	GELIC_LV1_WOL_ADD_MATCH_ADDR	= 6,
195 	GELIC_LV1_WOL_DELETE_MATCH_ADDR	= 7,
196 };
197 
198 /* for GELIC_LV1_WOL_MAGIC_PACKET */
199 enum gelic_lv1_wol_mp_arg {
200 	GELIC_LV1_WOL_MP_DISABLE	= 0,
201 	GELIC_LV1_WOL_MP_ENABLE		= 1,
202 };
203 
204 /* for GELIC_LV1_WOL_{ADD,DELETE}_MATCH_ADDR */
205 enum gelic_lv1_wol_match_arg {
206 	GELIC_LV1_WOL_MATCH_INDIVIDUAL	= 0,
207 	GELIC_LV1_WOL_MATCH_ALL		= 1,
208 };
209 
210 /* status returened from GET_ETH_PORT_STATUS */
211 enum gelic_lv1_ether_port_status {
212 	GELIC_LV1_ETHER_LINK_UP		= 0x0000000000000001L,
213 	GELIC_LV1_ETHER_FULL_DUPLEX	= 0x0000000000000002L,
214 	GELIC_LV1_ETHER_AUTO_NEG	= 0x0000000000000004L,
215 
216 	GELIC_LV1_ETHER_SPEED_10	= 0x0000000000000010L,
217 	GELIC_LV1_ETHER_SPEED_100	= 0x0000000000000020L,
218 	GELIC_LV1_ETHER_SPEED_1000	= 0x0000000000000040L,
219 	GELIC_LV1_ETHER_SPEED_MASK	= 0x0000000000000070L,
220 };
221 
222 enum gelic_lv1_vlan_index {
223 	/* for outgoing packets */
224 	GELIC_LV1_VLAN_TX_ETHERNET_0	= 0x0000000000000002L,
225 	GELIC_LV1_VLAN_TX_WIRELESS	= 0x0000000000000003L,
226 
227 	/* for incoming packets */
228 	GELIC_LV1_VLAN_RX_ETHERNET_0	= 0x0000000000000012L,
229 	GELIC_LV1_VLAN_RX_WIRELESS	= 0x0000000000000013L,
230 };
231 
232 enum gelic_lv1_phy {
233 	GELIC_LV1_PHY_ETHERNET_0	= 0x0000000000000002L,
234 };
235 
236 /* size of hardware part of gelic descriptor */
237 #define GELIC_DESCR_SIZE	(32)
238 
239 enum gelic_port_type {
240 	GELIC_PORT_ETHERNET_0	= 0,
241 	GELIC_PORT_WIRELESS	= 1,
242 	GELIC_PORT_MAX
243 };
244 
245 struct gelic_descr {
246 	/* as defined by the hardware */
247 	__be32 buf_addr;
248 	__be32 buf_size;
249 	__be32 next_descr_addr;
250 	__be32 dmac_cmd_status;
251 	__be32 result_size;
252 	__be32 valid_size;	/* all zeroes for tx */
253 	__be32 data_status;
254 	__be32 data_error;	/* all zeroes for tx */
255 
256 	/* used in the driver */
257 	struct sk_buff *skb;
258 	dma_addr_t bus_addr;
259 	struct gelic_descr *next;
260 	struct gelic_descr *prev;
261 } __attribute__((aligned(32)));
262 
263 struct gelic_descr_chain {
264 	/* we walk from tail to head */
265 	struct gelic_descr *head;
266 	struct gelic_descr *tail;
267 };
268 
269 struct gelic_vlan_id {
270 	u16 tx;
271 	u16 rx;
272 };
273 
274 struct gelic_card {
275 	struct napi_struct napi;
276 	struct net_device *netdev[GELIC_PORT_MAX];
277 	/*
278 	 * hypervisor requires irq_status should be
279 	 * 8 bytes aligned, but u64 member is
280 	 * always disposed in that manner
281 	 */
282 	u64 irq_status;
283 	u64 irq_mask;
284 
285 	struct ps3_system_bus_device *dev;
286 	struct gelic_vlan_id vlan[GELIC_PORT_MAX];
287 	int vlan_required;
288 
289 	struct gelic_descr_chain tx_chain;
290 	struct gelic_descr_chain rx_chain;
291 	/*
292 	 * tx_lock guards tx descriptor list and
293 	 * tx_dma_progress.
294 	 */
295 	spinlock_t tx_lock;
296 	int tx_dma_progress;
297 
298 	struct work_struct tx_timeout_task;
299 	atomic_t tx_timeout_task_counter;
300 	wait_queue_head_t waitq;
301 
302 	/* only first user should up the card */
303 	struct mutex updown_lock;
304 	atomic_t users;
305 
306 	u64 ether_port_status;
307 	int link_mode;
308 
309 	/* original address returned by kzalloc */
310 	void *unalign;
311 
312 	/*
313 	 * each netdevice has copy of irq
314 	 */
315 	unsigned int irq;
316 	struct gelic_descr *tx_top, *rx_top;
317 	struct gelic_descr descr[0]; /* must be the last */
318 };
319 
320 struct gelic_port {
321 	struct gelic_card *card;
322 	struct net_device *netdev;
323 	enum gelic_port_type type;
324 	long priv[0]; /* long for alignment */
325 };
326 
327 static inline struct gelic_card *port_to_card(struct gelic_port *p)
328 {
329 	return p->card;
330 }
331 static inline struct net_device *port_to_netdev(struct gelic_port *p)
332 {
333 	return p->netdev;
334 }
335 static inline struct gelic_card *netdev_card(struct net_device *d)
336 {
337 	return ((struct gelic_port *)netdev_priv(d))->card;
338 }
339 static inline struct gelic_port *netdev_port(struct net_device *d)
340 {
341 	return (struct gelic_port *)netdev_priv(d);
342 }
343 static inline struct device *ctodev(struct gelic_card *card)
344 {
345 	return &card->dev->core;
346 }
347 static inline u64 bus_id(struct gelic_card *card)
348 {
349 	return card->dev->bus_id;
350 }
351 static inline u64 dev_id(struct gelic_card *card)
352 {
353 	return card->dev->dev_id;
354 }
355 
356 static inline void *port_priv(struct gelic_port *port)
357 {
358 	return port->priv;
359 }
360 
361 #ifdef CONFIG_PPC_EARLY_DEBUG_PS3GELIC
362 void udbg_shutdown_ps3gelic(void);
363 #else
364 static inline void udbg_shutdown_ps3gelic(void) {}
365 #endif
366 
367 int gelic_card_set_irq_mask(struct gelic_card *card, u64 mask);
368 /* shared netdev ops */
369 void gelic_card_up(struct gelic_card *card);
370 void gelic_card_down(struct gelic_card *card);
371 int gelic_net_open(struct net_device *netdev);
372 int gelic_net_stop(struct net_device *netdev);
373 int gelic_net_xmit(struct sk_buff *skb, struct net_device *netdev);
374 void gelic_net_set_multi(struct net_device *netdev);
375 void gelic_net_tx_timeout(struct net_device *netdev);
376 int gelic_net_change_mtu(struct net_device *netdev, int new_mtu);
377 int gelic_net_setup_netdev(struct net_device *netdev, struct gelic_card *card);
378 
379 /* shared ethtool ops */
380 void gelic_net_get_drvinfo(struct net_device *netdev,
381 			   struct ethtool_drvinfo *info);
382 void gelic_net_poll_controller(struct net_device *netdev);
383 
384 #endif /* _GELIC_NET_H */
385