tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Network device driver for Cell Processor-Based Blade
3 *
4 * (C) Copyright IBM Corp. 2005
5 *
6 * Authors : Utz Bacher <utz.bacher@de.ibm.com>
7 * Jens Osterkamp <Jens.Osterkamp@de.ibm.com>
8 *
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, or (at your option)
12 * any later version.
13 *
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.
18 *
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
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 */
23
24#ifndef _SPIDER_NET_H
25#define _SPIDER_NET_H
26
27#define VERSION "1.6 A"
28
29#include "sungem_phy.h"
30
31extern int spider_net_stop(struct net_device *netdev);
32extern int spider_net_open(struct net_device *netdev);
33
34extern const struct ethtool_ops spider_net_ethtool_ops;
35
36extern char spider_net_driver_name[];
37
38#define SPIDER_NET_MAX_FRAME 2312
39#define SPIDER_NET_MAX_MTU 2294
40#define SPIDER_NET_MIN_MTU 64
41
42#define SPIDER_NET_RXBUF_ALIGN 128
43
44#define SPIDER_NET_RX_DESCRIPTORS_DEFAULT 256
45#define SPIDER_NET_RX_DESCRIPTORS_MIN 16
46#define SPIDER_NET_RX_DESCRIPTORS_MAX 512
47
48#define SPIDER_NET_TX_DESCRIPTORS_DEFAULT 256
49#define SPIDER_NET_TX_DESCRIPTORS_MIN 16
50#define SPIDER_NET_TX_DESCRIPTORS_MAX 512
51
52#define SPIDER_NET_TX_TIMER (HZ/5)
53
54#define SPIDER_NET_RX_CSUM_DEFAULT 1
55
56#define SPIDER_NET_WATCHDOG_TIMEOUT 50*HZ
57#define SPIDER_NET_NAPI_WEIGHT 64
58
59#define SPIDER_NET_FIRMWARE_SEQS 6
60#define SPIDER_NET_FIRMWARE_SEQWORDS 1024
61#define SPIDER_NET_FIRMWARE_LEN (SPIDER_NET_FIRMWARE_SEQS * \
62 SPIDER_NET_FIRMWARE_SEQWORDS * \
63 sizeof(u32))
64#define SPIDER_NET_FIRMWARE_NAME "spider_fw.bin"
65
66/** spider_net SMMIO registers */
67#define SPIDER_NET_GHIINT0STS 0x00000000
68#define SPIDER_NET_GHIINT1STS 0x00000004
69#define SPIDER_NET_GHIINT2STS 0x00000008
70#define SPIDER_NET_GHIINT0MSK 0x00000010
71#define SPIDER_NET_GHIINT1MSK 0x00000014
72#define SPIDER_NET_GHIINT2MSK 0x00000018
73
74#define SPIDER_NET_GRESUMINTNUM 0x00000020
75#define SPIDER_NET_GREINTNUM 0x00000024
76
77#define SPIDER_NET_GFFRMNUM 0x00000028
78#define SPIDER_NET_GFAFRMNUM 0x0000002c
79#define SPIDER_NET_GFBFRMNUM 0x00000030
80#define SPIDER_NET_GFCFRMNUM 0x00000034
81#define SPIDER_NET_GFDFRMNUM 0x00000038
82
83/* clear them (don't use it) */
84#define SPIDER_NET_GFREECNNUM 0x0000003c
85#define SPIDER_NET_GONETIMENUM 0x00000040
86
87#define SPIDER_NET_GTOUTFRMNUM 0x00000044
88
89#define SPIDER_NET_GTXMDSET 0x00000050
90#define SPIDER_NET_GPCCTRL 0x00000054
91#define SPIDER_NET_GRXMDSET 0x00000058
92#define SPIDER_NET_GIPSECINIT 0x0000005c
93#define SPIDER_NET_GFTRESTRT 0x00000060
94#define SPIDER_NET_GRXDMAEN 0x00000064
95#define SPIDER_NET_GMRWOLCTRL 0x00000068
96#define SPIDER_NET_GPCWOPCMD 0x0000006c
97#define SPIDER_NET_GPCROPCMD 0x00000070
98#define SPIDER_NET_GTTFRMCNT 0x00000078
99#define SPIDER_NET_GTESTMD 0x0000007c
100
101#define SPIDER_NET_GSINIT 0x00000080
102#define SPIDER_NET_GSnPRGADR 0x00000084
103#define SPIDER_NET_GSnPRGDAT 0x00000088
104
105#define SPIDER_NET_GMACOPEMD 0x00000100
106#define SPIDER_NET_GMACLENLMT 0x00000108
107#define SPIDER_NET_GMACINTEN 0x00000118
108#define SPIDER_NET_GMACPHYCTRL 0x00000120
109
110#define SPIDER_NET_GMACAPAUSE 0x00000154
111#define SPIDER_NET_GMACTXPAUSE 0x00000164
112
113#define SPIDER_NET_GMACMODE 0x000001b0
114#define SPIDER_NET_GMACBSTLMT 0x000001b4
115
116#define SPIDER_NET_GMACUNIMACU 0x000001c0
117#define SPIDER_NET_GMACUNIMACL 0x000001c8
118
119#define SPIDER_NET_GMRMHFILnR 0x00000400
120#define SPIDER_NET_MULTICAST_HASHES 256
121
122#define SPIDER_NET_GMRUAFILnR 0x00000500
123#define SPIDER_NET_GMRUA0FIL15R 0x00000578
124
125#define SPIDER_NET_GTTQMSK 0x00000934
126
127/* RX DMA controller registers, all 0x00000a.. are for DMA controller A,
128 * 0x00000b.. for DMA controller B, etc. */
129#define SPIDER_NET_GDADCHA 0x00000a00
130#define SPIDER_NET_GDADMACCNTR 0x00000a04
131#define SPIDER_NET_GDACTDPA 0x00000a08
132#define SPIDER_NET_GDACTDCNT 0x00000a0c
133#define SPIDER_NET_GDACDBADDR 0x00000a20
134#define SPIDER_NET_GDACDBSIZE 0x00000a24
135#define SPIDER_NET_GDACNEXTDA 0x00000a28
136#define SPIDER_NET_GDACCOMST 0x00000a2c
137#define SPIDER_NET_GDAWBCOMST 0x00000a30
138#define SPIDER_NET_GDAWBRSIZE 0x00000a34
139#define SPIDER_NET_GDAWBVSIZE 0x00000a38
140#define SPIDER_NET_GDAWBTRST 0x00000a3c
141#define SPIDER_NET_GDAWBTRERR 0x00000a40
142
143/* TX DMA controller registers */
144#define SPIDER_NET_GDTDCHA 0x00000e00
145#define SPIDER_NET_GDTDMACCNTR 0x00000e04
146#define SPIDER_NET_GDTCDPA 0x00000e08
147#define SPIDER_NET_GDTDMASEL 0x00000e14
148
149#define SPIDER_NET_ECMODE 0x00000f00
150/* clock and reset control register */
151#define SPIDER_NET_CKRCTRL 0x00000ff0
152
153/** SCONFIG registers */
154#define SPIDER_NET_SCONFIG_IOACTE 0x00002810
155
156/** interrupt mask registers */
157#define SPIDER_NET_INT0_MASK_VALUE 0x3f7fe2c7
158#define SPIDER_NET_INT1_MASK_VALUE 0xffff7ff7
159/* no MAC aborts -> auto retransmission */
160#define SPIDER_NET_INT2_MASK_VALUE 0xffef7ff1
161
162/* we rely on flagged descriptor interrupts */
163#define SPIDER_NET_FRAMENUM_VALUE 0x00000000
164/* set this first, then the FRAMENUM_VALUE */
165#define SPIDER_NET_GFXFRAMES_VALUE 0x00000000
166
167#define SPIDER_NET_STOP_SEQ_VALUE 0x00000000
168#define SPIDER_NET_RUN_SEQ_VALUE 0x0000007e
169
170#define SPIDER_NET_PHY_CTRL_VALUE 0x00040040
171/* #define SPIDER_NET_PHY_CTRL_VALUE 0x01070080*/
172#define SPIDER_NET_RXMODE_VALUE 0x00000011
173/* auto retransmission in case of MAC aborts */
174#define SPIDER_NET_TXMODE_VALUE 0x00010000
175#define SPIDER_NET_RESTART_VALUE 0x00000000
176#define SPIDER_NET_WOL_VALUE 0x00001111
177#if 0
178#define SPIDER_NET_WOL_VALUE 0x00000000
179#endif
180#define SPIDER_NET_IPSECINIT_VALUE 0x6f716f71
181
182/* pause frames: automatic, no upper retransmission count */
183/* outside loopback mode: ETOMOD signal dont matter, not connected */
184#define SPIDER_NET_OPMODE_VALUE 0x00000063
185/*#define SPIDER_NET_OPMODE_VALUE 0x001b0062*/
186#define SPIDER_NET_LENLMT_VALUE 0x00000908
187
188#define SPIDER_NET_MACAPAUSE_VALUE 0x00000800 /* about 1 ms */
189#define SPIDER_NET_TXPAUSE_VALUE 0x00000000
190
191#define SPIDER_NET_MACMODE_VALUE 0x00000001
192#define SPIDER_NET_BURSTLMT_VALUE 0x00000200 /* about 16 us */
193
194/* DMAC control register GDMACCNTR
195 *
196 * 1(0) enable r/tx dma
197 * 0000000 fixed to 0
198 *
199 * 000000 fixed to 0
200 * 0(1) en/disable descr writeback on force end
201 * 0(1) force end
202 *
203 * 000000 fixed to 0
204 * 00 burst alignment: 128 bytes
205 * 11 burst alignment: 1024 bytes
206 *
207 * 00000 fixed to 0
208 * 0 descr writeback size 32 bytes
209 * 0(1) descr chain end interrupt enable
210 * 0(1) descr status writeback enable */
211
212/* to set RX_DMA_EN */
213#define SPIDER_NET_DMA_RX_VALUE 0x80000000
214#define SPIDER_NET_DMA_RX_FEND_VALUE 0x00030003
215/* to set TX_DMA_EN */
216#define SPIDER_NET_TX_DMA_EN 0x80000000
217#define SPIDER_NET_GDTBSTA 0x00000300
218#define SPIDER_NET_GDTDCEIDIS 0x00000002
219#define SPIDER_NET_DMA_TX_VALUE SPIDER_NET_TX_DMA_EN | \
220 SPIDER_NET_GDTBSTA
221
222#define SPIDER_NET_DMA_TX_FEND_VALUE 0x00030003
223
224/* SPIDER_NET_UA_DESCR_VALUE is OR'ed with the unicast address */
225#define SPIDER_NET_UA_DESCR_VALUE 0x00080000
226#define SPIDER_NET_PROMISC_VALUE 0x00080000
227#define SPIDER_NET_NONPROMISC_VALUE 0x00000000
228
229#define SPIDER_NET_DMASEL_VALUE 0x00000001
230
231#define SPIDER_NET_ECMODE_VALUE 0x00000000
232
233#define SPIDER_NET_CKRCTRL_RUN_VALUE 0x1fff010f
234#define SPIDER_NET_CKRCTRL_STOP_VALUE 0x0000010f
235
236#define SPIDER_NET_SBIMSTATE_VALUE 0x00000000
237#define SPIDER_NET_SBTMSTATE_VALUE 0x00000000
238
239/* SPIDER_NET_GHIINT0STS bits, in reverse order so that they can be used
240 * with 1 << SPIDER_NET_... */
241enum spider_net_int0_status {
242 SPIDER_NET_GPHYINT = 0,
243 SPIDER_NET_GMAC2INT,
244 SPIDER_NET_GMAC1INT,
245 SPIDER_NET_GIPSINT,
246 SPIDER_NET_GFIFOINT,
247 SPIDER_NET_GDMACINT,
248 SPIDER_NET_GSYSINT,
249 SPIDER_NET_GPWOPCMPINT,
250 SPIDER_NET_GPROPCMPINT,
251 SPIDER_NET_GPWFFINT,
252 SPIDER_NET_GRMDADRINT,
253 SPIDER_NET_GRMARPINT,
254 SPIDER_NET_GRMMPINT,
255 SPIDER_NET_GDTDEN0INT,
256 SPIDER_NET_GDDDEN0INT,
257 SPIDER_NET_GDCDEN0INT,
258 SPIDER_NET_GDBDEN0INT,
259 SPIDER_NET_GDADEN0INT,
260 SPIDER_NET_GDTFDCINT,
261 SPIDER_NET_GDDFDCINT,
262 SPIDER_NET_GDCFDCINT,
263 SPIDER_NET_GDBFDCINT,
264 SPIDER_NET_GDAFDCINT,
265 SPIDER_NET_GTTEDINT,
266 SPIDER_NET_GDTDCEINT,
267 SPIDER_NET_GRFDNMINT,
268 SPIDER_NET_GRFCNMINT,
269 SPIDER_NET_GRFBNMINT,
270 SPIDER_NET_GRFANMINT,
271 SPIDER_NET_GRFNMINT,
272 SPIDER_NET_G1TMCNTINT,
273 SPIDER_NET_GFREECNTINT
274};
275/* GHIINT1STS bits */
276enum spider_net_int1_status {
277 SPIDER_NET_GTMFLLINT = 0,
278 SPIDER_NET_GRMFLLINT,
279 SPIDER_NET_GTMSHTINT,
280 SPIDER_NET_GDTINVDINT,
281 SPIDER_NET_GRFDFLLINT,
282 SPIDER_NET_GDDDCEINT,
283 SPIDER_NET_GDDINVDINT,
284 SPIDER_NET_GRFCFLLINT,
285 SPIDER_NET_GDCDCEINT,
286 SPIDER_NET_GDCINVDINT,
287 SPIDER_NET_GRFBFLLINT,
288 SPIDER_NET_GDBDCEINT,
289 SPIDER_NET_GDBINVDINT,
290 SPIDER_NET_GRFAFLLINT,
291 SPIDER_NET_GDADCEINT,
292 SPIDER_NET_GDAINVDINT,
293 SPIDER_NET_GDTRSERINT,
294 SPIDER_NET_GDDRSERINT,
295 SPIDER_NET_GDCRSERINT,
296 SPIDER_NET_GDBRSERINT,
297 SPIDER_NET_GDARSERINT,
298 SPIDER_NET_GDSERINT,
299 SPIDER_NET_GDTPTERINT,
300 SPIDER_NET_GDDPTERINT,
301 SPIDER_NET_GDCPTERINT,
302 SPIDER_NET_GDBPTERINT,
303 SPIDER_NET_GDAPTERINT
304};
305/* GHIINT2STS bits */
306enum spider_net_int2_status {
307 SPIDER_NET_GPROPERINT = 0,
308 SPIDER_NET_GMCTCRSNGINT,
309 SPIDER_NET_GMCTLCOLINT,
310 SPIDER_NET_GMCTTMOTINT,
311 SPIDER_NET_GMCRCAERINT,
312 SPIDER_NET_GMCRCALERINT,
313 SPIDER_NET_GMCRALNERINT,
314 SPIDER_NET_GMCROVRINT,
315 SPIDER_NET_GMCRRNTINT,
316 SPIDER_NET_GMCRRXERINT,
317 SPIDER_NET_GTITCSERINT,
318 SPIDER_NET_GTIFMTERINT,
319 SPIDER_NET_GTIPKTRVKINT,
320 SPIDER_NET_GTISPINGINT,
321 SPIDER_NET_GTISADNGINT,
322 SPIDER_NET_GTISPDNGINT,
323 SPIDER_NET_GRIFMTERINT,
324 SPIDER_NET_GRIPKTRVKINT,
325 SPIDER_NET_GRISPINGINT,
326 SPIDER_NET_GRISADNGINT,
327 SPIDER_NET_GRISPDNGINT
328};
329
330#define SPIDER_NET_TXINT ( (1 << SPIDER_NET_GDTFDCINT) | \
331 (1 << SPIDER_NET_GDTDCEINT) )
332
333/* We rely on flagged descriptor interrupts */
334#define SPIDER_NET_RXINT ( (1 << SPIDER_NET_GDAFDCINT) )
335
336#define SPIDER_NET_ERRINT ( 0xffffffff & \
337 (~SPIDER_NET_TXINT) & \
338 (~SPIDER_NET_RXINT) )
339
340#define SPIDER_NET_GPREXEC 0x80000000
341#define SPIDER_NET_GPRDAT_MASK 0x0000ffff
342
343#define SPIDER_NET_DMAC_NOINTR_COMPLETE 0x00800000
344#define SPIDER_NET_DMAC_NOCS 0x00040000
345#define SPIDER_NET_DMAC_TCP 0x00020000
346#define SPIDER_NET_DMAC_UDP 0x00030000
347#define SPIDER_NET_TXDCEST 0x08000000
348
349#define SPIDER_NET_DESCR_IND_PROC_MASK 0xF0000000
350#define SPIDER_NET_DESCR_COMPLETE 0x00000000 /* used in rx and tx */
351#define SPIDER_NET_DESCR_RESPONSE_ERROR 0x10000000 /* used in rx and tx */
352#define SPIDER_NET_DESCR_PROTECTION_ERROR 0x20000000 /* used in rx and tx */
353#define SPIDER_NET_DESCR_FRAME_END 0x40000000 /* used in rx */
354#define SPIDER_NET_DESCR_FORCE_END 0x50000000 /* used in rx and tx */
355#define SPIDER_NET_DESCR_CARDOWNED 0xA0000000 /* used in rx and tx */
356#define SPIDER_NET_DESCR_NOT_IN_USE 0xF0000000
357#define SPIDER_NET_DESCR_TXDESFLG 0x00800000
358
359struct spider_net_descr {
360 /* as defined by the hardware */
361 u32 buf_addr;
362 u32 buf_size;
363 u32 next_descr_addr;
364 u32 dmac_cmd_status;
365 u32 result_size;
366 u32 valid_size; /* all zeroes for tx */
367 u32 data_status;
368 u32 data_error; /* all zeroes for tx */
369
370 /* used in the driver */
371 struct sk_buff *skb;
372 u32 bus_addr;
373 struct spider_net_descr *next;
374 struct spider_net_descr *prev;
375} __attribute__((aligned(32)));
376
377struct spider_net_descr_chain {
378 spinlock_t lock;
379 struct spider_net_descr *head;
380 struct spider_net_descr *tail;
381};
382
383/* descriptor data_status bits */
384#define SPIDER_NET_RX_IPCHK 29
385#define SPIDER_NET_RX_TCPCHK 28
386#define SPIDER_NET_VLAN_PACKET 21
387#define SPIDER_NET_DATA_STATUS_CKSUM_MASK ( (1 << SPIDER_NET_RX_IPCHK) | \
388 (1 << SPIDER_NET_RX_TCPCHK) )
389
390/* descriptor data_error bits */
391#define SPIDER_NET_RX_IPCHKERR 27
392#define SPIDER_NET_RX_RXTCPCHKERR 28
393
394#define SPIDER_NET_DATA_ERR_CKSUM_MASK (1 << SPIDER_NET_RX_IPCHKERR)
395
396/* the cases we don't pass the packet to the stack.
397 * 701b8000 would be correct, but every packets gets that flag */
398#define SPIDER_NET_DESTROY_RX_FLAGS 0x700b8000
399
400#define SPIDER_NET_DESCR_SIZE 32
401
402/* this will be bigger some time */
403struct spider_net_options {
404 int rx_csum; /* for rx: if 0 ip_summed=NONE,
405 if 1 and hw has verified, ip_summed=UNNECESSARY */
406};
407
408#define SPIDER_NET_DEFAULT_MSG ( NETIF_MSG_DRV | \
409 NETIF_MSG_PROBE | \
410 NETIF_MSG_LINK | \
411 NETIF_MSG_TIMER | \
412 NETIF_MSG_IFDOWN | \
413 NETIF_MSG_IFUP | \
414 NETIF_MSG_RX_ERR | \
415 NETIF_MSG_TX_ERR | \
416 NETIF_MSG_TX_QUEUED | \
417 NETIF_MSG_INTR | \
418 NETIF_MSG_TX_DONE | \
419 NETIF_MSG_RX_STATUS | \
420 NETIF_MSG_PKTDATA | \
421 NETIF_MSG_HW | \
422 NETIF_MSG_WOL )
423
424struct spider_net_extra_stats {
425 unsigned long rx_desc_error;
426 unsigned long tx_timeouts;
427 unsigned long alloc_rx_skb_error;
428 unsigned long rx_iommu_map_error;
429 unsigned long tx_iommu_map_error;
430 unsigned long rx_desc_unk_state;
431};
432
433struct spider_net_card {
434 struct net_device *netdev;
435 struct pci_dev *pdev;
436 struct mii_phy phy;
437
438 void __iomem *regs;
439
440 struct spider_net_descr_chain tx_chain;
441 struct spider_net_descr_chain rx_chain;
442 struct spider_net_descr *low_watermark;
443
444 struct net_device_stats netdev_stats;
445
446 struct spider_net_options options;
447
448 spinlock_t intmask_lock;
449 struct tasklet_struct rxram_full_tl;
450 struct timer_list tx_timer;
451
452 struct work_struct tx_timeout_task;
453 atomic_t tx_timeout_task_counter;
454 wait_queue_head_t waitq;
455
456 /* for ethtool */
457 int msg_enable;
458 int num_rx_desc;
459 int num_tx_desc;
460 struct spider_net_extra_stats spider_stats;
461
462 struct spider_net_descr descr[0];
463};
464
465#define pr_err(fmt,arg...) \
466 printk(KERN_ERR fmt ,##arg)
467
468#endif