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48257c4f PA |
1 | /* |
2 | * FCC driver for Motorola MPC82xx (PQ2). | |
3 | * | |
9b8ee8e7 | 4 | * Copyright (c) 2003 Intracom S.A. |
48257c4f PA |
5 | * by Pantelis Antoniou <panto@intracom.gr> |
6 | * | |
9b8ee8e7 | 7 | * 2005 (c) MontaVista Software, Inc. |
48257c4f PA |
8 | * Vitaly Bordug <vbordug@ru.mvista.com> |
9 | * | |
9b8ee8e7 VB |
10 | * This file is licensed under the terms of the GNU General Public License |
11 | * version 2. This program is licensed "as is" without any warranty of any | |
48257c4f PA |
12 | * kind, whether express or implied. |
13 | */ | |
14 | ||
48257c4f PA |
15 | #include <linux/module.h> |
16 | #include <linux/kernel.h> | |
17 | #include <linux/types.h> | |
48257c4f PA |
18 | #include <linux/string.h> |
19 | #include <linux/ptrace.h> | |
20 | #include <linux/errno.h> | |
21 | #include <linux/ioport.h> | |
22 | #include <linux/slab.h> | |
23 | #include <linux/interrupt.h> | |
48257c4f PA |
24 | #include <linux/init.h> |
25 | #include <linux/delay.h> | |
26 | #include <linux/netdevice.h> | |
27 | #include <linux/etherdevice.h> | |
28 | #include <linux/skbuff.h> | |
29 | #include <linux/spinlock.h> | |
30 | #include <linux/mii.h> | |
31 | #include <linux/ethtool.h> | |
32 | #include <linux/bitops.h> | |
33 | #include <linux/fs.h> | |
f7b99969 | 34 | #include <linux/platform_device.h> |
5b4b8454 | 35 | #include <linux/phy.h> |
48257c4f PA |
36 | |
37 | #include <asm/immap_cpm2.h> | |
38 | #include <asm/mpc8260.h> | |
39 | #include <asm/cpm2.h> | |
40 | ||
41 | #include <asm/pgtable.h> | |
42 | #include <asm/irq.h> | |
43 | #include <asm/uaccess.h> | |
44 | ||
45 | #include "fs_enet.h" | |
46 | ||
47 | /*************************************************/ | |
48 | ||
49 | /* FCC access macros */ | |
50 | ||
51 | #define __fcc_out32(addr, x) out_be32((unsigned *)addr, x) | |
52 | #define __fcc_out16(addr, x) out_be16((unsigned short *)addr, x) | |
53 | #define __fcc_out8(addr, x) out_8((unsigned char *)addr, x) | |
54 | #define __fcc_in32(addr) in_be32((unsigned *)addr) | |
55 | #define __fcc_in16(addr) in_be16((unsigned short *)addr) | |
56 | #define __fcc_in8(addr) in_8((unsigned char *)addr) | |
57 | ||
58 | /* parameter space */ | |
59 | ||
60 | /* write, read, set bits, clear bits */ | |
61 | #define W32(_p, _m, _v) __fcc_out32(&(_p)->_m, (_v)) | |
62 | #define R32(_p, _m) __fcc_in32(&(_p)->_m) | |
63 | #define S32(_p, _m, _v) W32(_p, _m, R32(_p, _m) | (_v)) | |
64 | #define C32(_p, _m, _v) W32(_p, _m, R32(_p, _m) & ~(_v)) | |
65 | ||
66 | #define W16(_p, _m, _v) __fcc_out16(&(_p)->_m, (_v)) | |
67 | #define R16(_p, _m) __fcc_in16(&(_p)->_m) | |
68 | #define S16(_p, _m, _v) W16(_p, _m, R16(_p, _m) | (_v)) | |
69 | #define C16(_p, _m, _v) W16(_p, _m, R16(_p, _m) & ~(_v)) | |
70 | ||
71 | #define W8(_p, _m, _v) __fcc_out8(&(_p)->_m, (_v)) | |
72 | #define R8(_p, _m) __fcc_in8(&(_p)->_m) | |
73 | #define S8(_p, _m, _v) W8(_p, _m, R8(_p, _m) | (_v)) | |
74 | #define C8(_p, _m, _v) W8(_p, _m, R8(_p, _m) & ~(_v)) | |
75 | ||
76 | /*************************************************/ | |
77 | ||
78 | #define FCC_MAX_MULTICAST_ADDRS 64 | |
79 | ||
80 | #define mk_mii_read(REG) (0x60020000 | ((REG & 0x1f) << 18)) | |
81 | #define mk_mii_write(REG, VAL) (0x50020000 | ((REG & 0x1f) << 18) | (VAL & 0xffff)) | |
82 | #define mk_mii_end 0 | |
83 | ||
84 | #define MAX_CR_CMD_LOOPS 10000 | |
85 | ||
86 | static inline int fcc_cr_cmd(struct fs_enet_private *fep, u32 mcn, u32 op) | |
87 | { | |
88 | const struct fs_platform_info *fpi = fep->fpi; | |
89 | ||
90 | cpm2_map_t *immap = fs_enet_immap; | |
91 | cpm_cpm2_t *cpmp = &immap->im_cpm; | |
92 | u32 v; | |
93 | int i; | |
94 | ||
9b8ee8e7 | 95 | /* Currently I don't know what feature call will look like. But |
48257c4f PA |
96 | I guess there'd be something like do_cpm_cmd() which will require page & sblock */ |
97 | v = mk_cr_cmd(fpi->cp_page, fpi->cp_block, mcn, op); | |
98 | W32(cpmp, cp_cpcr, v | CPM_CR_FLG); | |
99 | for (i = 0; i < MAX_CR_CMD_LOOPS; i++) | |
100 | if ((R32(cpmp, cp_cpcr) & CPM_CR_FLG) == 0) | |
101 | break; | |
102 | ||
103 | if (i >= MAX_CR_CMD_LOOPS) { | |
104 | printk(KERN_ERR "%s(): Not able to issue CPM command\n", | |
105 | __FUNCTION__); | |
106 | return 1; | |
107 | } | |
108 | ||
109 | return 0; | |
110 | } | |
111 | ||
112 | static int do_pd_setup(struct fs_enet_private *fep) | |
113 | { | |
114 | struct platform_device *pdev = to_platform_device(fep->dev); | |
115 | struct resource *r; | |
116 | ||
117 | /* Fill out IRQ field */ | |
118 | fep->interrupt = platform_get_irq(pdev, 0); | |
48944738 DV |
119 | if (fep->interrupt < 0) |
120 | return -EINVAL; | |
48257c4f PA |
121 | |
122 | /* Attach the memory for the FCC Parameter RAM */ | |
123 | r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "fcc_pram"); | |
5b4b8454 | 124 | fep->fcc.ep = (void *)ioremap(r->start, r->end - r->start + 1); |
48257c4f PA |
125 | if (fep->fcc.ep == NULL) |
126 | return -EINVAL; | |
127 | ||
128 | r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "fcc_regs"); | |
5b4b8454 | 129 | fep->fcc.fccp = (void *)ioremap(r->start, r->end - r->start + 1); |
48257c4f PA |
130 | if (fep->fcc.fccp == NULL) |
131 | return -EINVAL; | |
132 | ||
5b4b8454 VB |
133 | if (fep->fpi->fcc_regs_c) { |
134 | ||
135 | fep->fcc.fcccp = (void *)fep->fpi->fcc_regs_c; | |
136 | } else { | |
137 | r = platform_get_resource_byname(pdev, IORESOURCE_MEM, | |
138 | "fcc_regs_c"); | |
139 | fep->fcc.fcccp = (void *)ioremap(r->start, | |
140 | r->end - r->start + 1); | |
141 | } | |
48257c4f PA |
142 | |
143 | if (fep->fcc.fcccp == NULL) | |
144 | return -EINVAL; | |
145 | ||
5b4b8454 VB |
146 | fep->fcc.mem = (void *)fep->fpi->mem_offset; |
147 | if (fep->fcc.mem == NULL) | |
148 | return -EINVAL; | |
149 | ||
48257c4f PA |
150 | return 0; |
151 | } | |
152 | ||
153 | #define FCC_NAPI_RX_EVENT_MSK (FCC_ENET_RXF | FCC_ENET_RXB) | |
154 | #define FCC_RX_EVENT (FCC_ENET_RXF) | |
155 | #define FCC_TX_EVENT (FCC_ENET_TXB) | |
156 | #define FCC_ERR_EVENT_MSK (FCC_ENET_TXE | FCC_ENET_BSY) | |
157 | ||
158 | static int setup_data(struct net_device *dev) | |
159 | { | |
160 | struct fs_enet_private *fep = netdev_priv(dev); | |
161 | const struct fs_platform_info *fpi = fep->fpi; | |
162 | ||
163 | fep->fcc.idx = fs_get_fcc_index(fpi->fs_no); | |
164 | if ((unsigned int)fep->fcc.idx >= 3) /* max 3 FCCs */ | |
165 | return -EINVAL; | |
166 | ||
48257c4f PA |
167 | if (do_pd_setup(fep) != 0) |
168 | return -EINVAL; | |
169 | ||
170 | fep->ev_napi_rx = FCC_NAPI_RX_EVENT_MSK; | |
171 | fep->ev_rx = FCC_RX_EVENT; | |
172 | fep->ev_tx = FCC_TX_EVENT; | |
173 | fep->ev_err = FCC_ERR_EVENT_MSK; | |
174 | ||
175 | return 0; | |
176 | } | |
177 | ||
178 | static int allocate_bd(struct net_device *dev) | |
179 | { | |
180 | struct fs_enet_private *fep = netdev_priv(dev); | |
181 | const struct fs_platform_info *fpi = fep->fpi; | |
182 | ||
183 | fep->ring_base = dma_alloc_coherent(fep->dev, | |
184 | (fpi->tx_ring + fpi->rx_ring) * | |
185 | sizeof(cbd_t), &fep->ring_mem_addr, | |
186 | GFP_KERNEL); | |
187 | if (fep->ring_base == NULL) | |
188 | return -ENOMEM; | |
189 | ||
190 | return 0; | |
191 | } | |
192 | ||
193 | static void free_bd(struct net_device *dev) | |
194 | { | |
195 | struct fs_enet_private *fep = netdev_priv(dev); | |
196 | const struct fs_platform_info *fpi = fep->fpi; | |
197 | ||
198 | if (fep->ring_base) | |
199 | dma_free_coherent(fep->dev, | |
200 | (fpi->tx_ring + fpi->rx_ring) * sizeof(cbd_t), | |
201 | fep->ring_base, fep->ring_mem_addr); | |
202 | } | |
203 | ||
204 | static void cleanup_data(struct net_device *dev) | |
205 | { | |
206 | /* nothing */ | |
207 | } | |
208 | ||
209 | static void set_promiscuous_mode(struct net_device *dev) | |
210 | { | |
211 | struct fs_enet_private *fep = netdev_priv(dev); | |
212 | fcc_t *fccp = fep->fcc.fccp; | |
213 | ||
214 | S32(fccp, fcc_fpsmr, FCC_PSMR_PRO); | |
215 | } | |
216 | ||
217 | static void set_multicast_start(struct net_device *dev) | |
218 | { | |
219 | struct fs_enet_private *fep = netdev_priv(dev); | |
220 | fcc_enet_t *ep = fep->fcc.ep; | |
221 | ||
222 | W32(ep, fen_gaddrh, 0); | |
223 | W32(ep, fen_gaddrl, 0); | |
224 | } | |
225 | ||
226 | static void set_multicast_one(struct net_device *dev, const u8 *mac) | |
227 | { | |
228 | struct fs_enet_private *fep = netdev_priv(dev); | |
229 | fcc_enet_t *ep = fep->fcc.ep; | |
230 | u16 taddrh, taddrm, taddrl; | |
231 | ||
232 | taddrh = ((u16)mac[5] << 8) | mac[4]; | |
233 | taddrm = ((u16)mac[3] << 8) | mac[2]; | |
234 | taddrl = ((u16)mac[1] << 8) | mac[0]; | |
235 | ||
236 | W16(ep, fen_taddrh, taddrh); | |
237 | W16(ep, fen_taddrm, taddrm); | |
238 | W16(ep, fen_taddrl, taddrl); | |
239 | fcc_cr_cmd(fep, 0x0C, CPM_CR_SET_GADDR); | |
240 | } | |
241 | ||
242 | static void set_multicast_finish(struct net_device *dev) | |
243 | { | |
244 | struct fs_enet_private *fep = netdev_priv(dev); | |
245 | fcc_t *fccp = fep->fcc.fccp; | |
246 | fcc_enet_t *ep = fep->fcc.ep; | |
247 | ||
248 | /* clear promiscuous always */ | |
249 | C32(fccp, fcc_fpsmr, FCC_PSMR_PRO); | |
250 | ||
251 | /* if all multi or too many multicasts; just enable all */ | |
252 | if ((dev->flags & IFF_ALLMULTI) != 0 || | |
253 | dev->mc_count > FCC_MAX_MULTICAST_ADDRS) { | |
254 | ||
255 | W32(ep, fen_gaddrh, 0xffffffff); | |
256 | W32(ep, fen_gaddrl, 0xffffffff); | |
257 | } | |
258 | ||
259 | /* read back */ | |
260 | fep->fcc.gaddrh = R32(ep, fen_gaddrh); | |
261 | fep->fcc.gaddrl = R32(ep, fen_gaddrl); | |
262 | } | |
263 | ||
264 | static void set_multicast_list(struct net_device *dev) | |
265 | { | |
266 | struct dev_mc_list *pmc; | |
267 | ||
268 | if ((dev->flags & IFF_PROMISC) == 0) { | |
269 | set_multicast_start(dev); | |
270 | for (pmc = dev->mc_list; pmc != NULL; pmc = pmc->next) | |
271 | set_multicast_one(dev, pmc->dmi_addr); | |
272 | set_multicast_finish(dev); | |
273 | } else | |
274 | set_promiscuous_mode(dev); | |
275 | } | |
276 | ||
277 | static void restart(struct net_device *dev) | |
278 | { | |
279 | struct fs_enet_private *fep = netdev_priv(dev); | |
280 | const struct fs_platform_info *fpi = fep->fpi; | |
281 | fcc_t *fccp = fep->fcc.fccp; | |
282 | fcc_c_t *fcccp = fep->fcc.fcccp; | |
283 | fcc_enet_t *ep = fep->fcc.ep; | |
284 | dma_addr_t rx_bd_base_phys, tx_bd_base_phys; | |
285 | u16 paddrh, paddrm, paddrl; | |
286 | u16 mem_addr; | |
287 | const unsigned char *mac; | |
288 | int i; | |
289 | ||
290 | C32(fccp, fcc_gfmr, FCC_GFMR_ENR | FCC_GFMR_ENT); | |
291 | ||
292 | /* clear everything (slow & steady does it) */ | |
293 | for (i = 0; i < sizeof(*ep); i++) | |
294 | __fcc_out8((char *)ep + i, 0); | |
295 | ||
296 | /* get physical address */ | |
297 | rx_bd_base_phys = fep->ring_mem_addr; | |
298 | tx_bd_base_phys = rx_bd_base_phys + sizeof(cbd_t) * fpi->rx_ring; | |
299 | ||
300 | /* point to bds */ | |
301 | W32(ep, fen_genfcc.fcc_rbase, rx_bd_base_phys); | |
302 | W32(ep, fen_genfcc.fcc_tbase, tx_bd_base_phys); | |
303 | ||
304 | /* Set maximum bytes per receive buffer. | |
305 | * It must be a multiple of 32. | |
306 | */ | |
307 | W16(ep, fen_genfcc.fcc_mrblr, PKT_MAXBLR_SIZE); | |
308 | ||
309 | W32(ep, fen_genfcc.fcc_rstate, (CPMFCR_GBL | CPMFCR_EB) << 24); | |
310 | W32(ep, fen_genfcc.fcc_tstate, (CPMFCR_GBL | CPMFCR_EB) << 24); | |
311 | ||
312 | /* Allocate space in the reserved FCC area of DPRAM for the | |
313 | * internal buffers. No one uses this space (yet), so we | |
314 | * can do this. Later, we will add resource management for | |
315 | * this area. | |
316 | */ | |
317 | ||
318 | mem_addr = (u32) fep->fcc.mem; /* de-fixup dpram offset */ | |
319 | ||
320 | W16(ep, fen_genfcc.fcc_riptr, (mem_addr & 0xffff)); | |
321 | W16(ep, fen_genfcc.fcc_tiptr, ((mem_addr + 32) & 0xffff)); | |
322 | W16(ep, fen_padptr, mem_addr + 64); | |
323 | ||
324 | /* fill with special symbol... */ | |
325 | memset(fep->fcc.mem + fpi->dpram_offset + 64, 0x88, 32); | |
326 | ||
327 | W32(ep, fen_genfcc.fcc_rbptr, 0); | |
328 | W32(ep, fen_genfcc.fcc_tbptr, 0); | |
329 | W32(ep, fen_genfcc.fcc_rcrc, 0); | |
330 | W32(ep, fen_genfcc.fcc_tcrc, 0); | |
331 | W16(ep, fen_genfcc.fcc_res1, 0); | |
332 | W32(ep, fen_genfcc.fcc_res2, 0); | |
333 | ||
334 | /* no CAM */ | |
335 | W32(ep, fen_camptr, 0); | |
336 | ||
337 | /* Set CRC preset and mask */ | |
338 | W32(ep, fen_cmask, 0xdebb20e3); | |
339 | W32(ep, fen_cpres, 0xffffffff); | |
340 | ||
341 | W32(ep, fen_crcec, 0); /* CRC Error counter */ | |
342 | W32(ep, fen_alec, 0); /* alignment error counter */ | |
343 | W32(ep, fen_disfc, 0); /* discard frame counter */ | |
344 | W16(ep, fen_retlim, 15); /* Retry limit threshold */ | |
345 | W16(ep, fen_pper, 0); /* Normal persistence */ | |
346 | ||
347 | /* set group address */ | |
348 | W32(ep, fen_gaddrh, fep->fcc.gaddrh); | |
349 | W32(ep, fen_gaddrl, fep->fcc.gaddrh); | |
350 | ||
351 | /* Clear hash filter tables */ | |
352 | W32(ep, fen_iaddrh, 0); | |
353 | W32(ep, fen_iaddrl, 0); | |
354 | ||
355 | /* Clear the Out-of-sequence TxBD */ | |
356 | W16(ep, fen_tfcstat, 0); | |
357 | W16(ep, fen_tfclen, 0); | |
358 | W32(ep, fen_tfcptr, 0); | |
359 | ||
360 | W16(ep, fen_mflr, PKT_MAXBUF_SIZE); /* maximum frame length register */ | |
361 | W16(ep, fen_minflr, PKT_MINBUF_SIZE); /* minimum frame length register */ | |
362 | ||
363 | /* set address */ | |
364 | mac = dev->dev_addr; | |
365 | paddrh = ((u16)mac[5] << 8) | mac[4]; | |
366 | paddrm = ((u16)mac[3] << 8) | mac[2]; | |
367 | paddrl = ((u16)mac[1] << 8) | mac[0]; | |
368 | ||
369 | W16(ep, fen_paddrh, paddrh); | |
370 | W16(ep, fen_paddrm, paddrm); | |
371 | W16(ep, fen_paddrl, paddrl); | |
372 | ||
373 | W16(ep, fen_taddrh, 0); | |
374 | W16(ep, fen_taddrm, 0); | |
375 | W16(ep, fen_taddrl, 0); | |
376 | ||
377 | W16(ep, fen_maxd1, 1520); /* maximum DMA1 length */ | |
378 | W16(ep, fen_maxd2, 1520); /* maximum DMA2 length */ | |
379 | ||
380 | /* Clear stat counters, in case we ever enable RMON */ | |
381 | W32(ep, fen_octc, 0); | |
382 | W32(ep, fen_colc, 0); | |
383 | W32(ep, fen_broc, 0); | |
384 | W32(ep, fen_mulc, 0); | |
385 | W32(ep, fen_uspc, 0); | |
386 | W32(ep, fen_frgc, 0); | |
387 | W32(ep, fen_ospc, 0); | |
388 | W32(ep, fen_jbrc, 0); | |
389 | W32(ep, fen_p64c, 0); | |
390 | W32(ep, fen_p65c, 0); | |
391 | W32(ep, fen_p128c, 0); | |
392 | W32(ep, fen_p256c, 0); | |
393 | W32(ep, fen_p512c, 0); | |
394 | W32(ep, fen_p1024c, 0); | |
395 | ||
396 | W16(ep, fen_rfthr, 0); /* Suggested by manual */ | |
397 | W16(ep, fen_rfcnt, 0); | |
398 | W16(ep, fen_cftype, 0); | |
399 | ||
400 | fs_init_bds(dev); | |
401 | ||
402 | /* adjust to speed (for RMII mode) */ | |
403 | if (fpi->use_rmii) { | |
5b4b8454 | 404 | if (fep->phydev->speed == 100) |
48257c4f PA |
405 | C8(fcccp, fcc_gfemr, 0x20); |
406 | else | |
407 | S8(fcccp, fcc_gfemr, 0x20); | |
408 | } | |
409 | ||
410 | fcc_cr_cmd(fep, 0x0c, CPM_CR_INIT_TRX); | |
411 | ||
412 | /* clear events */ | |
413 | W16(fccp, fcc_fcce, 0xffff); | |
414 | ||
415 | /* Enable interrupts we wish to service */ | |
416 | W16(fccp, fcc_fccm, FCC_ENET_TXE | FCC_ENET_RXF | FCC_ENET_TXB); | |
417 | ||
418 | /* Set GFMR to enable Ethernet operating mode */ | |
419 | W32(fccp, fcc_gfmr, FCC_GFMR_TCI | FCC_GFMR_MODE_ENET); | |
420 | ||
421 | /* set sync/delimiters */ | |
422 | W16(fccp, fcc_fdsr, 0xd555); | |
423 | ||
424 | W32(fccp, fcc_fpsmr, FCC_PSMR_ENCRC); | |
425 | ||
426 | if (fpi->use_rmii) | |
427 | S32(fccp, fcc_fpsmr, FCC_PSMR_RMII); | |
428 | ||
429 | /* adjust to duplex mode */ | |
5b4b8454 | 430 | if (fep->phydev->duplex) |
48257c4f PA |
431 | S32(fccp, fcc_fpsmr, FCC_PSMR_FDE | FCC_PSMR_LPB); |
432 | else | |
433 | C32(fccp, fcc_fpsmr, FCC_PSMR_FDE | FCC_PSMR_LPB); | |
434 | ||
435 | S32(fccp, fcc_gfmr, FCC_GFMR_ENR | FCC_GFMR_ENT); | |
436 | } | |
437 | ||
438 | static void stop(struct net_device *dev) | |
439 | { | |
440 | struct fs_enet_private *fep = netdev_priv(dev); | |
441 | fcc_t *fccp = fep->fcc.fccp; | |
442 | ||
443 | /* stop ethernet */ | |
444 | C32(fccp, fcc_gfmr, FCC_GFMR_ENR | FCC_GFMR_ENT); | |
445 | ||
446 | /* clear events */ | |
447 | W16(fccp, fcc_fcce, 0xffff); | |
448 | ||
449 | /* clear interrupt mask */ | |
450 | W16(fccp, fcc_fccm, 0); | |
451 | ||
452 | fs_cleanup_bds(dev); | |
453 | } | |
454 | ||
455 | static void pre_request_irq(struct net_device *dev, int irq) | |
456 | { | |
457 | /* nothing */ | |
458 | } | |
459 | ||
460 | static void post_free_irq(struct net_device *dev, int irq) | |
461 | { | |
462 | /* nothing */ | |
463 | } | |
464 | ||
465 | static void napi_clear_rx_event(struct net_device *dev) | |
466 | { | |
467 | struct fs_enet_private *fep = netdev_priv(dev); | |
468 | fcc_t *fccp = fep->fcc.fccp; | |
469 | ||
470 | W16(fccp, fcc_fcce, FCC_NAPI_RX_EVENT_MSK); | |
471 | } | |
472 | ||
473 | static void napi_enable_rx(struct net_device *dev) | |
474 | { | |
475 | struct fs_enet_private *fep = netdev_priv(dev); | |
476 | fcc_t *fccp = fep->fcc.fccp; | |
477 | ||
478 | S16(fccp, fcc_fccm, FCC_NAPI_RX_EVENT_MSK); | |
479 | } | |
480 | ||
481 | static void napi_disable_rx(struct net_device *dev) | |
482 | { | |
483 | struct fs_enet_private *fep = netdev_priv(dev); | |
484 | fcc_t *fccp = fep->fcc.fccp; | |
485 | ||
486 | C16(fccp, fcc_fccm, FCC_NAPI_RX_EVENT_MSK); | |
487 | } | |
488 | ||
489 | static void rx_bd_done(struct net_device *dev) | |
490 | { | |
491 | /* nothing */ | |
492 | } | |
493 | ||
494 | static void tx_kickstart(struct net_device *dev) | |
495 | { | |
5b4b8454 VB |
496 | struct fs_enet_private *fep = netdev_priv(dev); |
497 | fcc_t *fccp = fep->fcc.fccp; | |
498 | ||
499 | S32(fccp, fcc_ftodr, 0x80); | |
48257c4f PA |
500 | } |
501 | ||
502 | static u32 get_int_events(struct net_device *dev) | |
503 | { | |
504 | struct fs_enet_private *fep = netdev_priv(dev); | |
505 | fcc_t *fccp = fep->fcc.fccp; | |
506 | ||
507 | return (u32)R16(fccp, fcc_fcce); | |
508 | } | |
509 | ||
510 | static void clear_int_events(struct net_device *dev, u32 int_events) | |
511 | { | |
512 | struct fs_enet_private *fep = netdev_priv(dev); | |
513 | fcc_t *fccp = fep->fcc.fccp; | |
514 | ||
515 | W16(fccp, fcc_fcce, int_events & 0xffff); | |
516 | } | |
517 | ||
518 | static void ev_error(struct net_device *dev, u32 int_events) | |
519 | { | |
520 | printk(KERN_WARNING DRV_MODULE_NAME | |
521 | ": %s FS_ENET ERROR(s) 0x%x\n", dev->name, int_events); | |
522 | } | |
523 | ||
524 | int get_regs(struct net_device *dev, void *p, int *sizep) | |
525 | { | |
526 | struct fs_enet_private *fep = netdev_priv(dev); | |
527 | ||
528 | if (*sizep < sizeof(fcc_t) + sizeof(fcc_c_t) + sizeof(fcc_enet_t)) | |
529 | return -EINVAL; | |
530 | ||
531 | memcpy_fromio(p, fep->fcc.fccp, sizeof(fcc_t)); | |
532 | p = (char *)p + sizeof(fcc_t); | |
533 | ||
534 | memcpy_fromio(p, fep->fcc.fcccp, sizeof(fcc_c_t)); | |
535 | p = (char *)p + sizeof(fcc_c_t); | |
536 | ||
537 | memcpy_fromio(p, fep->fcc.ep, sizeof(fcc_enet_t)); | |
538 | ||
539 | return 0; | |
540 | } | |
541 | ||
542 | int get_regs_len(struct net_device *dev) | |
543 | { | |
544 | return sizeof(fcc_t) + sizeof(fcc_c_t) + sizeof(fcc_enet_t); | |
545 | } | |
546 | ||
547 | /* Some transmit errors cause the transmitter to shut | |
548 | * down. We now issue a restart transmit. Since the | |
549 | * errors close the BD and update the pointers, the restart | |
550 | * _should_ pick up without having to reset any of our | |
9b8ee8e7 | 551 | * pointers either. Also, To workaround 8260 device erratum |
48257c4f PA |
552 | * CPM37, we must disable and then re-enable the transmitter |
553 | * following a Late Collision, Underrun, or Retry Limit error. | |
554 | */ | |
555 | void tx_restart(struct net_device *dev) | |
556 | { | |
557 | struct fs_enet_private *fep = netdev_priv(dev); | |
558 | fcc_t *fccp = fep->fcc.fccp; | |
559 | ||
560 | C32(fccp, fcc_gfmr, FCC_GFMR_ENT); | |
561 | udelay(10); | |
562 | S32(fccp, fcc_gfmr, FCC_GFMR_ENT); | |
563 | ||
564 | fcc_cr_cmd(fep, 0x0C, CPM_CR_RESTART_TX); | |
565 | } | |
566 | ||
567 | /*************************************************************************/ | |
568 | ||
569 | const struct fs_ops fs_fcc_ops = { | |
570 | .setup_data = setup_data, | |
571 | .cleanup_data = cleanup_data, | |
572 | .set_multicast_list = set_multicast_list, | |
573 | .restart = restart, | |
574 | .stop = stop, | |
575 | .pre_request_irq = pre_request_irq, | |
576 | .post_free_irq = post_free_irq, | |
577 | .napi_clear_rx_event = napi_clear_rx_event, | |
578 | .napi_enable_rx = napi_enable_rx, | |
579 | .napi_disable_rx = napi_disable_rx, | |
580 | .rx_bd_done = rx_bd_done, | |
581 | .tx_kickstart = tx_kickstart, | |
582 | .get_int_events = get_int_events, | |
583 | .clear_int_events = clear_int_events, | |
584 | .ev_error = ev_error, | |
585 | .get_regs = get_regs, | |
586 | .get_regs_len = get_regs_len, | |
587 | .tx_restart = tx_restart, | |
588 | .allocate_bd = allocate_bd, | |
589 | .free_bd = free_bd, | |
590 | }; |