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[linux-2.6] / drivers / net / spider_net.h
1 /*
2  * Network device driver for Cell Processor-Based Blade and Celleb platform
3  *
4  * (C) Copyright IBM Corp. 2005
5  * (C) Copyright 2006 TOSHIBA CORPORATION
6  *
7  * Authors : Utz Bacher <utz.bacher@de.ibm.com>
8  *           Jens Osterkamp <Jens.Osterkamp@de.ibm.com>
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation; either version 2, or (at your option)
13  * any later version.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  * GNU General Public License for more details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with this program; if not, write to the Free Software
22  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23  */
24
25 #ifndef _SPIDER_NET_H
26 #define _SPIDER_NET_H
27
28 #define VERSION "2.0 B"
29
30 #include "sungem_phy.h"
31
32 extern int spider_net_stop(struct net_device *netdev);
33 extern int spider_net_open(struct net_device *netdev);
34
35 extern const struct ethtool_ops spider_net_ethtool_ops;
36
37 extern char spider_net_driver_name[];
38
39 #define SPIDER_NET_MAX_FRAME                    2312
40 #define SPIDER_NET_MAX_MTU                      2294
41 #define SPIDER_NET_MIN_MTU                      64
42
43 #define SPIDER_NET_RXBUF_ALIGN                  128
44
45 #define SPIDER_NET_RX_DESCRIPTORS_DEFAULT       256
46 #define SPIDER_NET_RX_DESCRIPTORS_MIN           16
47 #define SPIDER_NET_RX_DESCRIPTORS_MAX           512
48
49 #define SPIDER_NET_TX_DESCRIPTORS_DEFAULT       256
50 #define SPIDER_NET_TX_DESCRIPTORS_MIN           16
51 #define SPIDER_NET_TX_DESCRIPTORS_MAX           512
52
53 #define SPIDER_NET_TX_TIMER                     (HZ/5)
54 #define SPIDER_NET_ANEG_TIMER                   (HZ)
55 #define SPIDER_NET_ANEG_TIMEOUT                 5
56
57 #define SPIDER_NET_RX_CSUM_DEFAULT              1
58
59 #define SPIDER_NET_WATCHDOG_TIMEOUT             50*HZ
60 #define SPIDER_NET_NAPI_WEIGHT                  64
61
62 #define SPIDER_NET_FIRMWARE_SEQS        6
63 #define SPIDER_NET_FIRMWARE_SEQWORDS    1024
64 #define SPIDER_NET_FIRMWARE_LEN         (SPIDER_NET_FIRMWARE_SEQS * \
65                                          SPIDER_NET_FIRMWARE_SEQWORDS * \
66                                          sizeof(u32))
67 #define SPIDER_NET_FIRMWARE_NAME        "spider_fw.bin"
68
69 /** spider_net SMMIO registers */
70 #define SPIDER_NET_GHIINT0STS           0x00000000
71 #define SPIDER_NET_GHIINT1STS           0x00000004
72 #define SPIDER_NET_GHIINT2STS           0x00000008
73 #define SPIDER_NET_GHIINT0MSK           0x00000010
74 #define SPIDER_NET_GHIINT1MSK           0x00000014
75 #define SPIDER_NET_GHIINT2MSK           0x00000018
76
77 #define SPIDER_NET_GRESUMINTNUM         0x00000020
78 #define SPIDER_NET_GREINTNUM            0x00000024
79
80 #define SPIDER_NET_GFFRMNUM             0x00000028
81 #define SPIDER_NET_GFAFRMNUM            0x0000002c
82 #define SPIDER_NET_GFBFRMNUM            0x00000030
83 #define SPIDER_NET_GFCFRMNUM            0x00000034
84 #define SPIDER_NET_GFDFRMNUM            0x00000038
85
86 /* clear them (don't use it) */
87 #define SPIDER_NET_GFREECNNUM           0x0000003c
88 #define SPIDER_NET_GONETIMENUM          0x00000040
89
90 #define SPIDER_NET_GTOUTFRMNUM          0x00000044
91
92 #define SPIDER_NET_GTXMDSET             0x00000050
93 #define SPIDER_NET_GPCCTRL              0x00000054
94 #define SPIDER_NET_GRXMDSET             0x00000058
95 #define SPIDER_NET_GIPSECINIT           0x0000005c
96 #define SPIDER_NET_GFTRESTRT            0x00000060
97 #define SPIDER_NET_GRXDMAEN             0x00000064
98 #define SPIDER_NET_GMRWOLCTRL           0x00000068
99 #define SPIDER_NET_GPCWOPCMD            0x0000006c
100 #define SPIDER_NET_GPCROPCMD            0x00000070
101 #define SPIDER_NET_GTTFRMCNT            0x00000078
102 #define SPIDER_NET_GTESTMD              0x0000007c
103
104 #define SPIDER_NET_GSINIT               0x00000080
105 #define SPIDER_NET_GSnPRGADR            0x00000084
106 #define SPIDER_NET_GSnPRGDAT            0x00000088
107
108 #define SPIDER_NET_GMACOPEMD            0x00000100
109 #define SPIDER_NET_GMACLENLMT           0x00000108
110 #define SPIDER_NET_GMACST               0x00000110
111 #define SPIDER_NET_GMACINTEN            0x00000118
112 #define SPIDER_NET_GMACPHYCTRL          0x00000120
113
114 #define SPIDER_NET_GMACAPAUSE           0x00000154
115 #define SPIDER_NET_GMACTXPAUSE          0x00000164
116
117 #define SPIDER_NET_GMACMODE             0x000001b0
118 #define SPIDER_NET_GMACBSTLMT           0x000001b4
119
120 #define SPIDER_NET_GMACUNIMACU          0x000001c0
121 #define SPIDER_NET_GMACUNIMACL          0x000001c8
122
123 #define SPIDER_NET_GMRMHFILnR           0x00000400
124 #define SPIDER_NET_MULTICAST_HASHES     256
125
126 #define SPIDER_NET_GMRUAFILnR           0x00000500
127 #define SPIDER_NET_GMRUA0FIL15R         0x00000578
128
129 #define SPIDER_NET_GTTQMSK              0x00000934
130
131 /* RX DMA controller registers, all 0x00000a.. are for DMA controller A,
132  * 0x00000b.. for DMA controller B, etc. */
133 #define SPIDER_NET_GDADCHA              0x00000a00
134 #define SPIDER_NET_GDADMACCNTR          0x00000a04
135 #define SPIDER_NET_GDACTDPA             0x00000a08
136 #define SPIDER_NET_GDACTDCNT            0x00000a0c
137 #define SPIDER_NET_GDACDBADDR           0x00000a20
138 #define SPIDER_NET_GDACDBSIZE           0x00000a24
139 #define SPIDER_NET_GDACNEXTDA           0x00000a28
140 #define SPIDER_NET_GDACCOMST            0x00000a2c
141 #define SPIDER_NET_GDAWBCOMST           0x00000a30
142 #define SPIDER_NET_GDAWBRSIZE           0x00000a34
143 #define SPIDER_NET_GDAWBVSIZE           0x00000a38
144 #define SPIDER_NET_GDAWBTRST            0x00000a3c
145 #define SPIDER_NET_GDAWBTRERR           0x00000a40
146
147 /* TX DMA controller registers */
148 #define SPIDER_NET_GDTDCHA              0x00000e00
149 #define SPIDER_NET_GDTDMACCNTR          0x00000e04
150 #define SPIDER_NET_GDTCDPA              0x00000e08
151 #define SPIDER_NET_GDTDMASEL            0x00000e14
152
153 #define SPIDER_NET_ECMODE               0x00000f00
154 /* clock and reset control register */
155 #define SPIDER_NET_CKRCTRL              0x00000ff0
156
157 /** SCONFIG registers */
158 #define SPIDER_NET_SCONFIG_IOACTE       0x00002810
159
160 /** interrupt mask registers */
161 #define SPIDER_NET_INT0_MASK_VALUE      0x3f7fe2c7
162 #define SPIDER_NET_INT1_MASK_VALUE      0x0000fff2
163 #define SPIDER_NET_INT2_MASK_VALUE      0x000003f1
164
165 /* we rely on flagged descriptor interrupts */
166 #define SPIDER_NET_FRAMENUM_VALUE       0x00000000
167 /* set this first, then the FRAMENUM_VALUE */
168 #define SPIDER_NET_GFXFRAMES_VALUE      0x00000000
169
170 #define SPIDER_NET_STOP_SEQ_VALUE       0x00000000
171 #define SPIDER_NET_RUN_SEQ_VALUE        0x0000007e
172
173 #define SPIDER_NET_PHY_CTRL_VALUE       0x00040040
174 /* #define SPIDER_NET_PHY_CTRL_VALUE    0x01070080*/
175 #define SPIDER_NET_RXMODE_VALUE         0x00000011
176 /* auto retransmission in case of MAC aborts */
177 #define SPIDER_NET_TXMODE_VALUE         0x00010000
178 #define SPIDER_NET_RESTART_VALUE        0x00000000
179 #define SPIDER_NET_WOL_VALUE            0x00001111
180 #if 0
181 #define SPIDER_NET_WOL_VALUE            0x00000000
182 #endif
183 #define SPIDER_NET_IPSECINIT_VALUE      0x6f716f71
184
185 /* pause frames: automatic, no upper retransmission count */
186 /* outside loopback mode: ETOMOD signal dont matter, not connected */
187 /* ETOMOD signal is brought to PHY reset. bit 2 must be 1 in Celleb */
188 #define SPIDER_NET_OPMODE_VALUE         0x00000067
189 /*#define SPIDER_NET_OPMODE_VALUE               0x001b0062*/
190 #define SPIDER_NET_LENLMT_VALUE         0x00000908
191
192 #define SPIDER_NET_MACAPAUSE_VALUE      0x00000800 /* about 1 ms */
193 #define SPIDER_NET_TXPAUSE_VALUE        0x00000000
194
195 #define SPIDER_NET_MACMODE_VALUE        0x00000001
196 #define SPIDER_NET_BURSTLMT_VALUE       0x00000200 /* about 16 us */
197
198 /* DMAC control register GDMACCNTR
199  *
200  * 1(0)                         enable r/tx dma
201  *  0000000                             fixed to 0
202  *
203  *         000000                       fixed to 0
204  *               0(1)                   en/disable descr writeback on force end
205  *                0(1)                  force end
206  *
207  *                 000000               fixed to 0
208  *                       00             burst alignment: 128 bytes
209  *                       11             burst alignment: 1024 bytes
210  *
211  *                         00000        fixed to 0
212  *                              0       descr writeback size 32 bytes
213  *                               0(1)   descr chain end interrupt enable
214  *                                0(1)  descr status writeback enable */
215
216 /* to set RX_DMA_EN */
217 #define SPIDER_NET_DMA_RX_VALUE         0x80000000
218 #define SPIDER_NET_DMA_RX_FEND_VALUE    0x00030003
219 /* to set TX_DMA_EN */
220 #define SPIDER_NET_TX_DMA_EN           0x80000000
221 #define SPIDER_NET_GDTBSTA             0x00000300
222 #define SPIDER_NET_GDTDCEIDIS          0x00000002
223 #define SPIDER_NET_DMA_TX_VALUE        SPIDER_NET_TX_DMA_EN | \
224                                        SPIDER_NET_GDTDCEIDIS | \
225                                        SPIDER_NET_GDTBSTA
226
227 #define SPIDER_NET_DMA_TX_FEND_VALUE    0x00030003
228
229 /* SPIDER_NET_UA_DESCR_VALUE is OR'ed with the unicast address */
230 #define SPIDER_NET_UA_DESCR_VALUE       0x00080000
231 #define SPIDER_NET_PROMISC_VALUE        0x00080000
232 #define SPIDER_NET_NONPROMISC_VALUE     0x00000000
233
234 #define SPIDER_NET_DMASEL_VALUE         0x00000001
235
236 #define SPIDER_NET_ECMODE_VALUE         0x00000000
237
238 #define SPIDER_NET_CKRCTRL_RUN_VALUE    0x1fff010f
239 #define SPIDER_NET_CKRCTRL_STOP_VALUE   0x0000010f
240
241 #define SPIDER_NET_SBIMSTATE_VALUE      0x00000000
242 #define SPIDER_NET_SBTMSTATE_VALUE      0x00000000
243
244 /* SPIDER_NET_GHIINT0STS bits, in reverse order so that they can be used
245  * with 1 << SPIDER_NET_... */
246 enum spider_net_int0_status {
247         SPIDER_NET_GPHYINT = 0,
248         SPIDER_NET_GMAC2INT,
249         SPIDER_NET_GMAC1INT,
250         SPIDER_NET_GIPSINT,
251         SPIDER_NET_GFIFOINT,
252         SPIDER_NET_GDMACINT,
253         SPIDER_NET_GSYSINT,
254         SPIDER_NET_GPWOPCMPINT,
255         SPIDER_NET_GPROPCMPINT,
256         SPIDER_NET_GPWFFINT,
257         SPIDER_NET_GRMDADRINT,
258         SPIDER_NET_GRMARPINT,
259         SPIDER_NET_GRMMPINT,
260         SPIDER_NET_GDTDEN0INT,
261         SPIDER_NET_GDDDEN0INT,
262         SPIDER_NET_GDCDEN0INT,
263         SPIDER_NET_GDBDEN0INT,
264         SPIDER_NET_GDADEN0INT,
265         SPIDER_NET_GDTFDCINT,
266         SPIDER_NET_GDDFDCINT,
267         SPIDER_NET_GDCFDCINT,
268         SPIDER_NET_GDBFDCINT,
269         SPIDER_NET_GDAFDCINT,
270         SPIDER_NET_GTTEDINT,
271         SPIDER_NET_GDTDCEINT,
272         SPIDER_NET_GRFDNMINT,
273         SPIDER_NET_GRFCNMINT,
274         SPIDER_NET_GRFBNMINT,
275         SPIDER_NET_GRFANMINT,
276         SPIDER_NET_GRFNMINT,
277         SPIDER_NET_G1TMCNTINT,
278         SPIDER_NET_GFREECNTINT
279 };
280 /* GHIINT1STS bits */
281 enum spider_net_int1_status {
282         SPIDER_NET_GTMFLLINT = 0,
283         SPIDER_NET_GRMFLLINT,
284         SPIDER_NET_GTMSHTINT,
285         SPIDER_NET_GDTINVDINT,
286         SPIDER_NET_GRFDFLLINT,
287         SPIDER_NET_GDDDCEINT,
288         SPIDER_NET_GDDINVDINT,
289         SPIDER_NET_GRFCFLLINT,
290         SPIDER_NET_GDCDCEINT,
291         SPIDER_NET_GDCINVDINT,
292         SPIDER_NET_GRFBFLLINT,
293         SPIDER_NET_GDBDCEINT,
294         SPIDER_NET_GDBINVDINT,
295         SPIDER_NET_GRFAFLLINT,
296         SPIDER_NET_GDADCEINT,
297         SPIDER_NET_GDAINVDINT,
298         SPIDER_NET_GDTRSERINT,
299         SPIDER_NET_GDDRSERINT,
300         SPIDER_NET_GDCRSERINT,
301         SPIDER_NET_GDBRSERINT,
302         SPIDER_NET_GDARSERINT,
303         SPIDER_NET_GDSERINT,
304         SPIDER_NET_GDTPTERINT,
305         SPIDER_NET_GDDPTERINT,
306         SPIDER_NET_GDCPTERINT,
307         SPIDER_NET_GDBPTERINT,
308         SPIDER_NET_GDAPTERINT
309 };
310 /* GHIINT2STS bits */
311 enum spider_net_int2_status {
312         SPIDER_NET_GPROPERINT = 0,
313         SPIDER_NET_GMCTCRSNGINT,
314         SPIDER_NET_GMCTLCOLINT,
315         SPIDER_NET_GMCTTMOTINT,
316         SPIDER_NET_GMCRCAERINT,
317         SPIDER_NET_GMCRCALERINT,
318         SPIDER_NET_GMCRALNERINT,
319         SPIDER_NET_GMCROVRINT,
320         SPIDER_NET_GMCRRNTINT,
321         SPIDER_NET_GMCRRXERINT,
322         SPIDER_NET_GTITCSERINT,
323         SPIDER_NET_GTIFMTERINT,
324         SPIDER_NET_GTIPKTRVKINT,
325         SPIDER_NET_GTISPINGINT,
326         SPIDER_NET_GTISADNGINT,
327         SPIDER_NET_GTISPDNGINT,
328         SPIDER_NET_GRIFMTERINT,
329         SPIDER_NET_GRIPKTRVKINT,
330         SPIDER_NET_GRISPINGINT,
331         SPIDER_NET_GRISADNGINT,
332         SPIDER_NET_GRISPDNGINT
333 };
334
335 #define SPIDER_NET_TXINT        (1 << SPIDER_NET_GDTFDCINT)
336
337 /* We rely on flagged descriptor interrupts */
338 #define SPIDER_NET_RXINT        ( (1 << SPIDER_NET_GDAFDCINT) )
339
340 #define SPIDER_NET_LINKINT      ( 1 << SPIDER_NET_GMAC2INT )
341
342 #define SPIDER_NET_ERRINT       ( 0xffffffff & \
343                                   (~SPIDER_NET_TXINT) & \
344                                   (~SPIDER_NET_RXINT) & \
345                                   (~SPIDER_NET_LINKINT) )
346
347 #define SPIDER_NET_GPREXEC                      0x80000000
348 #define SPIDER_NET_GPRDAT_MASK                  0x0000ffff
349
350 #define SPIDER_NET_DMAC_NOINTR_COMPLETE         0x00800000
351 #define SPIDER_NET_DMAC_TXFRMTL         0x00040000
352 #define SPIDER_NET_DMAC_TCP                     0x00020000
353 #define SPIDER_NET_DMAC_UDP                     0x00030000
354 #define SPIDER_NET_TXDCEST                      0x08000000
355
356 #define SPIDER_NET_DESCR_RXFDIS        0x00000001
357 #define SPIDER_NET_DESCR_RXDCEIS       0x00000002
358 #define SPIDER_NET_DESCR_RXDEN0IS      0x00000004
359 #define SPIDER_NET_DESCR_RXINVDIS      0x00000008
360 #define SPIDER_NET_DESCR_RXRERRIS      0x00000010
361 #define SPIDER_NET_DESCR_RXFDCIMS      0x00000100
362 #define SPIDER_NET_DESCR_RXDCEIMS      0x00000200
363 #define SPIDER_NET_DESCR_RXDEN0IMS     0x00000400
364 #define SPIDER_NET_DESCR_RXINVDIMS     0x00000800
365 #define SPIDER_NET_DESCR_RXRERRMIS     0x00001000
366 #define SPIDER_NET_DESCR_UNUSED        0x077fe0e0
367
368 #define SPIDER_NET_DESCR_IND_PROC_MASK          0xF0000000
369 #define SPIDER_NET_DESCR_COMPLETE               0x00000000 /* used in rx and tx */
370 #define SPIDER_NET_DESCR_RESPONSE_ERROR         0x10000000 /* used in rx and tx */
371 #define SPIDER_NET_DESCR_PROTECTION_ERROR       0x20000000 /* used in rx and tx */
372 #define SPIDER_NET_DESCR_FRAME_END              0x40000000 /* used in rx */
373 #define SPIDER_NET_DESCR_FORCE_END              0x50000000 /* used in rx and tx */
374 #define SPIDER_NET_DESCR_CARDOWNED              0xA0000000 /* used in rx and tx */
375 #define SPIDER_NET_DESCR_NOT_IN_USE             0xF0000000
376 #define SPIDER_NET_DESCR_TXDESFLG               0x00800000
377
378 #define SPIDER_NET_DESCR_BAD_STATUS   (SPIDER_NET_DESCR_RXDEN0IS | \
379                                        SPIDER_NET_DESCR_RXRERRIS | \
380                                        SPIDER_NET_DESCR_RXDEN0IMS | \
381                                        SPIDER_NET_DESCR_RXINVDIMS | \
382                                        SPIDER_NET_DESCR_RXRERRMIS | \
383                                        SPIDER_NET_DESCR_UNUSED)
384
385 /* Descriptor, as defined by the hardware */
386 struct spider_net_hw_descr {
387         u32 buf_addr;
388         u32 buf_size;
389         u32 next_descr_addr;
390         u32 dmac_cmd_status;
391         u32 result_size;
392         u32 valid_size; /* all zeroes for tx */
393         u32 data_status;
394         u32 data_error; /* all zeroes for tx */
395 } __attribute__((aligned(32)));
396
397 struct spider_net_descr {
398         struct spider_net_hw_descr *hwdescr;
399         struct sk_buff *skb;
400         u32 bus_addr;
401         struct spider_net_descr *next;
402         struct spider_net_descr *prev;
403 };
404
405 struct spider_net_descr_chain {
406         spinlock_t lock;
407         struct spider_net_descr *head;
408         struct spider_net_descr *tail;
409         struct spider_net_descr *ring;
410         int num_desc;
411         struct spider_net_hw_descr *hwring;
412         dma_addr_t dma_addr;
413 };
414
415 /* descriptor data_status bits */
416 #define SPIDER_NET_RX_IPCHK             29
417 #define SPIDER_NET_RX_TCPCHK            28
418 #define SPIDER_NET_VLAN_PACKET          21
419 #define SPIDER_NET_DATA_STATUS_CKSUM_MASK ( (1 << SPIDER_NET_RX_IPCHK) | \
420                                           (1 << SPIDER_NET_RX_TCPCHK) )
421
422 /* descriptor data_error bits */
423 #define SPIDER_NET_RX_IPCHKERR          27
424 #define SPIDER_NET_RX_RXTCPCHKERR       28
425
426 #define SPIDER_NET_DATA_ERR_CKSUM_MASK  (1 << SPIDER_NET_RX_IPCHKERR)
427
428 /* the cases we don't pass the packet to the stack.
429  * 701b8000 would be correct, but every packets gets that flag */
430 #define SPIDER_NET_DESTROY_RX_FLAGS     0x700b8000
431
432 /* this will be bigger some time */
433 struct spider_net_options {
434         int rx_csum; /* for rx: if 0 ip_summed=NONE,
435                         if 1 and hw has verified, ip_summed=UNNECESSARY */
436 };
437
438 #define SPIDER_NET_DEFAULT_MSG          ( NETIF_MSG_DRV | \
439                                           NETIF_MSG_PROBE | \
440                                           NETIF_MSG_LINK | \
441                                           NETIF_MSG_TIMER | \
442                                           NETIF_MSG_IFDOWN | \
443                                           NETIF_MSG_IFUP | \
444                                           NETIF_MSG_RX_ERR | \
445                                           NETIF_MSG_TX_ERR | \
446                                           NETIF_MSG_TX_QUEUED | \
447                                           NETIF_MSG_INTR | \
448                                           NETIF_MSG_TX_DONE | \
449                                           NETIF_MSG_RX_STATUS | \
450                                           NETIF_MSG_PKTDATA | \
451                                           NETIF_MSG_HW | \
452                                           NETIF_MSG_WOL )
453
454 struct spider_net_extra_stats {
455         unsigned long rx_desc_error;
456         unsigned long tx_timeouts;
457         unsigned long alloc_rx_skb_error;
458         unsigned long rx_iommu_map_error;
459         unsigned long tx_iommu_map_error;
460         unsigned long rx_desc_unk_state;
461 };
462
463 struct spider_net_card {
464         struct net_device *netdev;
465         struct pci_dev *pdev;
466         struct mii_phy phy;
467
468         struct napi_struct napi;
469
470         int medium;
471
472         void __iomem *regs;
473
474         struct spider_net_descr_chain tx_chain;
475         struct spider_net_descr_chain rx_chain;
476         struct spider_net_descr *low_watermark;
477
478         int aneg_count;
479         struct timer_list aneg_timer;
480         struct timer_list tx_timer;
481         struct work_struct tx_timeout_task;
482         atomic_t tx_timeout_task_counter;
483         wait_queue_head_t waitq;
484         int num_rx_ints;
485         int ignore_rx_ramfull;
486
487         /* for ethtool */
488         int msg_enable;
489         struct spider_net_extra_stats spider_stats;
490         struct spider_net_options options;
491
492         /* Must be last item in struct */
493         struct spider_net_descr darray[0];
494 };
495
496 #endif