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11#include <linux/stmmac.h>
12#include "common.h"
13#include "descs_com.h"
14
15static int enh_desc_get_tx_status(void *data, struct stmmac_extra_stats *x,
16 struct dma_desc *p, void __iomem *ioaddr)
17{
18 struct net_device_stats *stats = (struct net_device_stats *)data;
19 unsigned int tdes0 = le32_to_cpu(p->des0);
20 int ret = tx_done;
21
22
23 if (unlikely(tdes0 & ETDES0_OWN))
24 return tx_dma_own;
25
26
27 if (likely(!(tdes0 & ETDES0_LAST_SEGMENT)))
28 return tx_not_ls;
29
30 if (unlikely(tdes0 & ETDES0_ERROR_SUMMARY)) {
31 if (unlikely(tdes0 & ETDES0_JABBER_TIMEOUT))
32 x->tx_jabber++;
33
34 if (unlikely(tdes0 & ETDES0_FRAME_FLUSHED)) {
35 x->tx_frame_flushed++;
36 dwmac_dma_flush_tx_fifo(ioaddr);
37 }
38
39 if (unlikely(tdes0 & ETDES0_LOSS_CARRIER)) {
40 x->tx_losscarrier++;
41 stats->tx_carrier_errors++;
42 }
43 if (unlikely(tdes0 & ETDES0_NO_CARRIER)) {
44 x->tx_carrier++;
45 stats->tx_carrier_errors++;
46 }
47 if (unlikely((tdes0 & ETDES0_LATE_COLLISION) ||
48 (tdes0 & ETDES0_EXCESSIVE_COLLISIONS)))
49 stats->collisions +=
50 (tdes0 & ETDES0_COLLISION_COUNT_MASK) >> 3;
51
52 if (unlikely(tdes0 & ETDES0_EXCESSIVE_DEFERRAL))
53 x->tx_deferred++;
54
55 if (unlikely(tdes0 & ETDES0_UNDERFLOW_ERROR)) {
56 dwmac_dma_flush_tx_fifo(ioaddr);
57 x->tx_underflow++;
58 }
59
60 if (unlikely(tdes0 & ETDES0_IP_HEADER_ERROR))
61 x->tx_ip_header_error++;
62
63 if (unlikely(tdes0 & ETDES0_PAYLOAD_ERROR)) {
64 x->tx_payload_error++;
65 dwmac_dma_flush_tx_fifo(ioaddr);
66 }
67
68 ret = tx_err;
69 }
70
71 if (unlikely(tdes0 & ETDES0_DEFERRED))
72 x->tx_deferred++;
73
74#ifdef STMMAC_VLAN_TAG_USED
75 if (tdes0 & ETDES0_VLAN_FRAME)
76 x->tx_vlan++;
77#endif
78
79 return ret;
80}
81
82static int enh_desc_get_tx_len(struct dma_desc *p)
83{
84 return (le32_to_cpu(p->des1) & ETDES1_BUFFER1_SIZE_MASK);
85}
86
87static int enh_desc_coe_rdes0(int ipc_err, int type, int payload_err)
88{
89 int ret = good_frame;
90 u32 status = (type << 2 | ipc_err << 1 | payload_err) & 0x7;
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100
101
102
103 if (status == 0x0)
104 ret = llc_snap;
105 else if (status == 0x4)
106 ret = good_frame;
107 else if (status == 0x5)
108 ret = csum_none;
109 else if (status == 0x6)
110 ret = csum_none;
111 else if (status == 0x7)
112 ret = csum_none;
113 else if (status == 0x1)
114 ret = discard_frame;
115 else if (status == 0x3)
116 ret = discard_frame;
117 return ret;
118}
119
120static void enh_desc_get_ext_status(void *data, struct stmmac_extra_stats *x,
121 struct dma_extended_desc *p)
122{
123 unsigned int rdes0 = le32_to_cpu(p->basic.des0);
124 unsigned int rdes4 = le32_to_cpu(p->des4);
125
126 if (unlikely(rdes0 & ERDES0_RX_MAC_ADDR)) {
127 int message_type = (rdes4 & ERDES4_MSG_TYPE_MASK) >> 8;
128
129 if (rdes4 & ERDES4_IP_HDR_ERR)
130 x->ip_hdr_err++;
131 if (rdes4 & ERDES4_IP_PAYLOAD_ERR)
132 x->ip_payload_err++;
133 if (rdes4 & ERDES4_IP_CSUM_BYPASSED)
134 x->ip_csum_bypassed++;
135 if (rdes4 & ERDES4_IPV4_PKT_RCVD)
136 x->ipv4_pkt_rcvd++;
137 if (rdes4 & ERDES4_IPV6_PKT_RCVD)
138 x->ipv6_pkt_rcvd++;
139
140 if (message_type == RDES_EXT_NO_PTP)
141 x->no_ptp_rx_msg_type_ext++;
142 else if (message_type == RDES_EXT_SYNC)
143 x->ptp_rx_msg_type_sync++;
144 else if (message_type == RDES_EXT_FOLLOW_UP)
145 x->ptp_rx_msg_type_follow_up++;
146 else if (message_type == RDES_EXT_DELAY_REQ)
147 x->ptp_rx_msg_type_delay_req++;
148 else if (message_type == RDES_EXT_DELAY_RESP)
149 x->ptp_rx_msg_type_delay_resp++;
150 else if (message_type == RDES_EXT_PDELAY_REQ)
151 x->ptp_rx_msg_type_pdelay_req++;
152 else if (message_type == RDES_EXT_PDELAY_RESP)
153 x->ptp_rx_msg_type_pdelay_resp++;
154 else if (message_type == RDES_EXT_PDELAY_FOLLOW_UP)
155 x->ptp_rx_msg_type_pdelay_follow_up++;
156 else if (message_type == RDES_PTP_ANNOUNCE)
157 x->ptp_rx_msg_type_announce++;
158 else if (message_type == RDES_PTP_MANAGEMENT)
159 x->ptp_rx_msg_type_management++;
160 else if (message_type == RDES_PTP_PKT_RESERVED_TYPE)
161 x->ptp_rx_msg_pkt_reserved_type++;
162
163 if (rdes4 & ERDES4_PTP_FRAME_TYPE)
164 x->ptp_frame_type++;
165 if (rdes4 & ERDES4_PTP_VER)
166 x->ptp_ver++;
167 if (rdes4 & ERDES4_TIMESTAMP_DROPPED)
168 x->timestamp_dropped++;
169 if (rdes4 & ERDES4_AV_PKT_RCVD)
170 x->av_pkt_rcvd++;
171 if (rdes4 & ERDES4_AV_TAGGED_PKT_RCVD)
172 x->av_tagged_pkt_rcvd++;
173 if ((rdes4 & ERDES4_VLAN_TAG_PRI_VAL_MASK) >> 18)
174 x->vlan_tag_priority_val++;
175 if (rdes4 & ERDES4_L3_FILTER_MATCH)
176 x->l3_filter_match++;
177 if (rdes4 & ERDES4_L4_FILTER_MATCH)
178 x->l4_filter_match++;
179 if ((rdes4 & ERDES4_L3_L4_FILT_NO_MATCH_MASK) >> 26)
180 x->l3_l4_filter_no_match++;
181 }
182}
183
184static int enh_desc_get_rx_status(void *data, struct stmmac_extra_stats *x,
185 struct dma_desc *p)
186{
187 struct net_device_stats *stats = (struct net_device_stats *)data;
188 unsigned int rdes0 = le32_to_cpu(p->des0);
189 int ret = good_frame;
190
191 if (unlikely(rdes0 & RDES0_OWN))
192 return dma_own;
193
194 if (unlikely(!(rdes0 & RDES0_LAST_DESCRIPTOR))) {
195 stats->rx_length_errors++;
196 return discard_frame;
197 }
198
199 if (unlikely(rdes0 & RDES0_ERROR_SUMMARY)) {
200 if (unlikely(rdes0 & RDES0_DESCRIPTOR_ERROR)) {
201 x->rx_desc++;
202 stats->rx_length_errors++;
203 }
204 if (unlikely(rdes0 & RDES0_OVERFLOW_ERROR))
205 x->rx_gmac_overflow++;
206
207 if (unlikely(rdes0 & RDES0_IPC_CSUM_ERROR))
208 pr_err("\tIPC Csum Error/Giant frame\n");
209
210 if (unlikely(rdes0 & RDES0_COLLISION))
211 stats->collisions++;
212 if (unlikely(rdes0 & RDES0_RECEIVE_WATCHDOG))
213 x->rx_watchdog++;
214
215 if (unlikely(rdes0 & RDES0_MII_ERROR))
216 x->rx_mii++;
217
218 if (unlikely(rdes0 & RDES0_CRC_ERROR)) {
219 x->rx_crc_errors++;
220 stats->rx_crc_errors++;
221 }
222 ret = discard_frame;
223 }
224
225
226
227
228
229 if (likely(ret == good_frame))
230 ret = enh_desc_coe_rdes0(!!(rdes0 & RDES0_IPC_CSUM_ERROR),
231 !!(rdes0 & RDES0_FRAME_TYPE),
232 !!(rdes0 & ERDES0_RX_MAC_ADDR));
233
234 if (unlikely(rdes0 & RDES0_DRIBBLING))
235 x->dribbling_bit++;
236
237 if (unlikely(rdes0 & RDES0_SA_FILTER_FAIL)) {
238 x->sa_rx_filter_fail++;
239 ret = discard_frame;
240 }
241 if (unlikely(rdes0 & RDES0_DA_FILTER_FAIL)) {
242 x->da_rx_filter_fail++;
243 ret = discard_frame;
244 }
245 if (unlikely(rdes0 & RDES0_LENGTH_ERROR)) {
246 x->rx_length++;
247 ret = discard_frame;
248 }
249#ifdef STMMAC_VLAN_TAG_USED
250 if (rdes0 & RDES0_VLAN_TAG)
251 x->rx_vlan++;
252#endif
253
254 return ret;
255}
256
257static void enh_desc_init_rx_desc(struct dma_desc *p, int disable_rx_ic,
258 int mode, int end, int bfsize)
259{
260 int bfsize1;
261
262 p->des0 |= cpu_to_le32(RDES0_OWN);
263
264 bfsize1 = min(bfsize, BUF_SIZE_8KiB);
265 p->des1 |= cpu_to_le32(bfsize1 & ERDES1_BUFFER1_SIZE_MASK);
266
267 if (mode == STMMAC_CHAIN_MODE)
268 ehn_desc_rx_set_on_chain(p);
269 else
270 ehn_desc_rx_set_on_ring(p, end, bfsize);
271
272 if (disable_rx_ic)
273 p->des1 |= cpu_to_le32(ERDES1_DISABLE_IC);
274}
275
276static void enh_desc_init_tx_desc(struct dma_desc *p, int mode, int end)
277{
278 p->des0 &= cpu_to_le32(~ETDES0_OWN);
279 if (mode == STMMAC_CHAIN_MODE)
280 enh_desc_end_tx_desc_on_chain(p);
281 else
282 enh_desc_end_tx_desc_on_ring(p, end);
283}
284
285static int enh_desc_get_tx_owner(struct dma_desc *p)
286{
287 return (le32_to_cpu(p->des0) & ETDES0_OWN) >> 31;
288}
289
290static void enh_desc_set_tx_owner(struct dma_desc *p)
291{
292 p->des0 |= cpu_to_le32(ETDES0_OWN);
293}
294
295static void enh_desc_set_rx_owner(struct dma_desc *p, int disable_rx_ic)
296{
297 p->des0 |= cpu_to_le32(RDES0_OWN);
298}
299
300static int enh_desc_get_tx_ls(struct dma_desc *p)
301{
302 return (le32_to_cpu(p->des0) & ETDES0_LAST_SEGMENT) >> 29;
303}
304
305static void enh_desc_release_tx_desc(struct dma_desc *p, int mode)
306{
307 int ter = (le32_to_cpu(p->des0) & ETDES0_END_RING) >> 21;
308
309 memset(p, 0, offsetof(struct dma_desc, des2));
310 if (mode == STMMAC_CHAIN_MODE)
311 enh_desc_end_tx_desc_on_chain(p);
312 else
313 enh_desc_end_tx_desc_on_ring(p, ter);
314}
315
316static void enh_desc_prepare_tx_desc(struct dma_desc *p, int is_fs, int len,
317 bool csum_flag, int mode, bool tx_own,
318 bool ls, unsigned int tot_pkt_len)
319{
320 unsigned int tdes0 = le32_to_cpu(p->des0);
321
322 if (mode == STMMAC_CHAIN_MODE)
323 enh_set_tx_desc_len_on_chain(p, len);
324 else
325 enh_set_tx_desc_len_on_ring(p, len);
326
327 if (is_fs)
328 tdes0 |= ETDES0_FIRST_SEGMENT;
329 else
330 tdes0 &= ~ETDES0_FIRST_SEGMENT;
331
332 if (likely(csum_flag))
333 tdes0 |= (TX_CIC_FULL << ETDES0_CHECKSUM_INSERTION_SHIFT);
334 else
335 tdes0 &= ~(TX_CIC_FULL << ETDES0_CHECKSUM_INSERTION_SHIFT);
336
337 if (ls)
338 tdes0 |= ETDES0_LAST_SEGMENT;
339
340
341 if (tx_own)
342 tdes0 |= ETDES0_OWN;
343
344 if (is_fs && tx_own)
345
346
347
348
349 dma_wmb();
350
351 p->des0 = cpu_to_le32(tdes0);
352}
353
354static void enh_desc_set_tx_ic(struct dma_desc *p)
355{
356 p->des0 |= cpu_to_le32(ETDES0_INTERRUPT);
357}
358
359static int enh_desc_get_rx_frame_len(struct dma_desc *p, int rx_coe_type)
360{
361 unsigned int csum = 0;
362
363
364
365
366
367
368 if (rx_coe_type == STMMAC_RX_COE_TYPE1)
369 csum = 2;
370
371 return (((le32_to_cpu(p->des0) & RDES0_FRAME_LEN_MASK)
372 >> RDES0_FRAME_LEN_SHIFT) - csum);
373}
374
375static void enh_desc_enable_tx_timestamp(struct dma_desc *p)
376{
377 p->des0 |= cpu_to_le32(ETDES0_TIME_STAMP_ENABLE);
378}
379
380static int enh_desc_get_tx_timestamp_status(struct dma_desc *p)
381{
382 return (le32_to_cpu(p->des0) & ETDES0_TIME_STAMP_STATUS) >> 17;
383}
384
385static void enh_desc_get_timestamp(void *desc, u32 ats, u64 *ts)
386{
387 u64 ns;
388
389 if (ats) {
390 struct dma_extended_desc *p = (struct dma_extended_desc *)desc;
391 ns = le32_to_cpu(p->des6);
392
393 ns += le32_to_cpu(p->des7) * 1000000000ULL;
394 } else {
395 struct dma_desc *p = (struct dma_desc *)desc;
396 ns = le32_to_cpu(p->des2);
397 ns += le32_to_cpu(p->des3) * 1000000000ULL;
398 }
399
400 *ts = ns;
401}
402
403static int enh_desc_get_rx_timestamp_status(void *desc, void *next_desc,
404 u32 ats)
405{
406 if (ats) {
407 struct dma_extended_desc *p = (struct dma_extended_desc *)desc;
408 return (le32_to_cpu(p->basic.des0) & RDES0_IPC_CSUM_ERROR) >> 7;
409 } else {
410 struct dma_desc *p = (struct dma_desc *)desc;
411 if ((le32_to_cpu(p->des2) == 0xffffffff) &&
412 (le32_to_cpu(p->des3) == 0xffffffff))
413
414 return 0;
415 else
416 return 1;
417 }
418}
419
420static void enh_desc_display_ring(void *head, unsigned int size, bool rx,
421 dma_addr_t dma_rx_phy, unsigned int desc_size)
422{
423 struct dma_extended_desc *ep = (struct dma_extended_desc *)head;
424 dma_addr_t dma_addr;
425 int i;
426
427 pr_info("Extended %s descriptor ring:\n", rx ? "RX" : "TX");
428
429 for (i = 0; i < size; i++) {
430 u64 x;
431 dma_addr = dma_rx_phy + i * sizeof(*ep);
432
433 x = *(u64 *)ep;
434 pr_info("%03d [%pad]: 0x%x 0x%x 0x%x 0x%x\n",
435 i, &dma_addr,
436 (unsigned int)x, (unsigned int)(x >> 32),
437 ep->basic.des2, ep->basic.des3);
438 ep++;
439 }
440 pr_info("\n");
441}
442
443static void enh_desc_get_addr(struct dma_desc *p, unsigned int *addr)
444{
445 *addr = le32_to_cpu(p->des2);
446}
447
448static void enh_desc_set_addr(struct dma_desc *p, dma_addr_t addr)
449{
450 p->des2 = cpu_to_le32(addr);
451}
452
453static void enh_desc_clear(struct dma_desc *p)
454{
455 p->des2 = 0;
456}
457
458const struct stmmac_desc_ops enh_desc_ops = {
459 .tx_status = enh_desc_get_tx_status,
460 .rx_status = enh_desc_get_rx_status,
461 .get_tx_len = enh_desc_get_tx_len,
462 .init_rx_desc = enh_desc_init_rx_desc,
463 .init_tx_desc = enh_desc_init_tx_desc,
464 .get_tx_owner = enh_desc_get_tx_owner,
465 .release_tx_desc = enh_desc_release_tx_desc,
466 .prepare_tx_desc = enh_desc_prepare_tx_desc,
467 .set_tx_ic = enh_desc_set_tx_ic,
468 .get_tx_ls = enh_desc_get_tx_ls,
469 .set_tx_owner = enh_desc_set_tx_owner,
470 .set_rx_owner = enh_desc_set_rx_owner,
471 .get_rx_frame_len = enh_desc_get_rx_frame_len,
472 .rx_extended_status = enh_desc_get_ext_status,
473 .enable_tx_timestamp = enh_desc_enable_tx_timestamp,
474 .get_tx_timestamp_status = enh_desc_get_tx_timestamp_status,
475 .get_timestamp = enh_desc_get_timestamp,
476 .get_rx_timestamp_status = enh_desc_get_rx_timestamp_status,
477 .display_ring = enh_desc_display_ring,
478 .get_addr = enh_desc_get_addr,
479 .set_addr = enh_desc_set_addr,
480 .clear = enh_desc_clear,
481};
482
