Commit | Line | Data |
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d7024191 GS |
1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* | |
3 | * K3 NAVSS DMA glue interface | |
4 | * | |
5 | * Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com | |
6 | * | |
7 | */ | |
8 | ||
56b0a668 | 9 | #include <linux/module.h> |
d7024191 GS |
10 | #include <linux/atomic.h> |
11 | #include <linux/delay.h> | |
12 | #include <linux/dma-mapping.h> | |
13 | #include <linux/io.h> | |
14 | #include <linux/init.h> | |
15 | #include <linux/of.h> | |
16 | #include <linux/platform_device.h> | |
17 | #include <linux/soc/ti/k3-ringacc.h> | |
18 | #include <linux/dma/ti-cppi5.h> | |
19 | #include <linux/dma/k3-udma-glue.h> | |
20 | ||
21 | #include "k3-udma.h" | |
22 | #include "k3-psil-priv.h" | |
23 | ||
24 | struct k3_udma_glue_common { | |
25 | struct device *dev; | |
5b65781d | 26 | struct device chan_dev; |
d7024191 GS |
27 | struct udma_dev *udmax; |
28 | const struct udma_tisci_rm *tisci_rm; | |
29 | struct k3_ringacc *ringacc; | |
30 | u32 src_thread; | |
31 | u32 dst_thread; | |
32 | ||
33 | u32 hdesc_size; | |
34 | bool epib; | |
35 | u32 psdata_size; | |
36 | u32 swdata_size; | |
5b65781d VR |
37 | u32 atype_asel; |
38 | struct psil_endpoint_config *ep_config; | |
d7024191 GS |
39 | }; |
40 | ||
41 | struct k3_udma_glue_tx_channel { | |
42 | struct k3_udma_glue_common common; | |
43 | ||
44 | struct udma_tchan *udma_tchanx; | |
45 | int udma_tchan_id; | |
46 | ||
47 | struct k3_ring *ringtx; | |
48 | struct k3_ring *ringtxcq; | |
49 | ||
50 | bool psil_paired; | |
51 | ||
52 | int virq; | |
53 | ||
54 | atomic_t free_pkts; | |
55 | bool tx_pause_on_err; | |
56 | bool tx_filt_einfo; | |
57 | bool tx_filt_pswords; | |
58 | bool tx_supr_tdpkt; | |
5b65781d VR |
59 | |
60 | int udma_tflow_id; | |
d7024191 GS |
61 | }; |
62 | ||
63 | struct k3_udma_glue_rx_flow { | |
64 | struct udma_rflow *udma_rflow; | |
65 | int udma_rflow_id; | |
66 | struct k3_ring *ringrx; | |
67 | struct k3_ring *ringrxfdq; | |
68 | ||
69 | int virq; | |
70 | }; | |
71 | ||
72 | struct k3_udma_glue_rx_channel { | |
73 | struct k3_udma_glue_common common; | |
74 | ||
75 | struct udma_rchan *udma_rchanx; | |
76 | int udma_rchan_id; | |
77 | bool remote; | |
78 | ||
79 | bool psil_paired; | |
80 | ||
81 | u32 swdata_size; | |
82 | int flow_id_base; | |
83 | ||
84 | struct k3_udma_glue_rx_flow *flows; | |
85 | u32 flow_num; | |
86 | u32 flows_ready; | |
87 | }; | |
88 | ||
5b65781d VR |
89 | static void k3_udma_chan_dev_release(struct device *dev) |
90 | { | |
91 | /* The struct containing the device is devm managed */ | |
92 | } | |
93 | ||
94 | static struct class k3_udma_glue_devclass = { | |
95 | .name = "k3_udma_glue_chan", | |
96 | .dev_release = k3_udma_chan_dev_release, | |
97 | }; | |
98 | ||
d7024191 GS |
99 | #define K3_UDMAX_TDOWN_TIMEOUT_US 1000 |
100 | ||
101 | static int of_k3_udma_glue_parse(struct device_node *udmax_np, | |
102 | struct k3_udma_glue_common *common) | |
103 | { | |
d7024191 GS |
104 | common->udmax = of_xudma_dev_get(udmax_np, NULL); |
105 | if (IS_ERR(common->udmax)) | |
106 | return PTR_ERR(common->udmax); | |
107 | ||
aa8a4c4e | 108 | common->ringacc = xudma_get_ringacc(common->udmax); |
d7024191 GS |
109 | common->tisci_rm = xudma_dev_get_tisci_rm(common->udmax); |
110 | ||
111 | return 0; | |
112 | } | |
113 | ||
114 | static int of_k3_udma_glue_parse_chn(struct device_node *chn_np, | |
115 | const char *name, struct k3_udma_glue_common *common, | |
116 | bool tx_chn) | |
117 | { | |
d7024191 GS |
118 | struct of_phandle_args dma_spec; |
119 | u32 thread_id; | |
120 | int ret = 0; | |
121 | int index; | |
122 | ||
123 | if (unlikely(!name)) | |
124 | return -EINVAL; | |
125 | ||
126 | index = of_property_match_string(chn_np, "dma-names", name); | |
127 | if (index < 0) | |
128 | return index; | |
129 | ||
130 | if (of_parse_phandle_with_args(chn_np, "dmas", "#dma-cells", index, | |
131 | &dma_spec)) | |
132 | return -ENOENT; | |
133 | ||
5b65781d VR |
134 | ret = of_k3_udma_glue_parse(dma_spec.np, common); |
135 | if (ret) | |
136 | goto out_put_spec; | |
137 | ||
d7024191 | 138 | thread_id = dma_spec.args[0]; |
0ebcf1a2 | 139 | if (dma_spec.args_count == 2) { |
5b65781d | 140 | if (dma_spec.args[1] > 2 && !xudma_is_pktdma(common->udmax)) { |
0ebcf1a2 PU |
141 | dev_err(common->dev, "Invalid channel atype: %u\n", |
142 | dma_spec.args[1]); | |
143 | ret = -EINVAL; | |
144 | goto out_put_spec; | |
145 | } | |
5b65781d VR |
146 | if (dma_spec.args[1] > 15 && xudma_is_pktdma(common->udmax)) { |
147 | dev_err(common->dev, "Invalid channel asel: %u\n", | |
148 | dma_spec.args[1]); | |
149 | ret = -EINVAL; | |
150 | goto out_put_spec; | |
151 | } | |
152 | ||
153 | common->atype_asel = dma_spec.args[1]; | |
0ebcf1a2 | 154 | } |
d7024191 GS |
155 | |
156 | if (tx_chn && !(thread_id & K3_PSIL_DST_THREAD_ID_OFFSET)) { | |
157 | ret = -EINVAL; | |
158 | goto out_put_spec; | |
159 | } | |
160 | ||
161 | if (!tx_chn && (thread_id & K3_PSIL_DST_THREAD_ID_OFFSET)) { | |
162 | ret = -EINVAL; | |
163 | goto out_put_spec; | |
164 | } | |
165 | ||
166 | /* get psil endpoint config */ | |
5b65781d VR |
167 | common->ep_config = psil_get_ep_config(thread_id); |
168 | if (IS_ERR(common->ep_config)) { | |
d7024191 GS |
169 | dev_err(common->dev, |
170 | "No configuration for psi-l thread 0x%04x\n", | |
171 | thread_id); | |
5b65781d | 172 | ret = PTR_ERR(common->ep_config); |
d7024191 GS |
173 | goto out_put_spec; |
174 | } | |
175 | ||
5b65781d VR |
176 | common->epib = common->ep_config->needs_epib; |
177 | common->psdata_size = common->ep_config->psd_size; | |
d7024191 GS |
178 | |
179 | if (tx_chn) | |
180 | common->dst_thread = thread_id; | |
181 | else | |
182 | common->src_thread = thread_id; | |
183 | ||
d7024191 GS |
184 | out_put_spec: |
185 | of_node_put(dma_spec.np); | |
186 | return ret; | |
187 | }; | |
188 | ||
189 | static void k3_udma_glue_dump_tx_chn(struct k3_udma_glue_tx_channel *tx_chn) | |
190 | { | |
191 | struct device *dev = tx_chn->common.dev; | |
192 | ||
193 | dev_dbg(dev, "dump_tx_chn:\n" | |
194 | "udma_tchan_id: %d\n" | |
195 | "src_thread: %08x\n" | |
196 | "dst_thread: %08x\n", | |
197 | tx_chn->udma_tchan_id, | |
198 | tx_chn->common.src_thread, | |
199 | tx_chn->common.dst_thread); | |
200 | } | |
201 | ||
202 | static void k3_udma_glue_dump_tx_rt_chn(struct k3_udma_glue_tx_channel *chn, | |
203 | char *mark) | |
204 | { | |
205 | struct device *dev = chn->common.dev; | |
206 | ||
207 | dev_dbg(dev, "=== dump ===> %s\n", mark); | |
bc7e5523 PU |
208 | dev_dbg(dev, "0x%08X: %08X\n", UDMA_CHAN_RT_CTL_REG, |
209 | xudma_tchanrt_read(chn->udma_tchanx, UDMA_CHAN_RT_CTL_REG)); | |
210 | dev_dbg(dev, "0x%08X: %08X\n", UDMA_CHAN_RT_PEER_RT_EN_REG, | |
d7024191 | 211 | xudma_tchanrt_read(chn->udma_tchanx, |
bc7e5523 PU |
212 | UDMA_CHAN_RT_PEER_RT_EN_REG)); |
213 | dev_dbg(dev, "0x%08X: %08X\n", UDMA_CHAN_RT_PCNT_REG, | |
214 | xudma_tchanrt_read(chn->udma_tchanx, UDMA_CHAN_RT_PCNT_REG)); | |
215 | dev_dbg(dev, "0x%08X: %08X\n", UDMA_CHAN_RT_BCNT_REG, | |
216 | xudma_tchanrt_read(chn->udma_tchanx, UDMA_CHAN_RT_BCNT_REG)); | |
217 | dev_dbg(dev, "0x%08X: %08X\n", UDMA_CHAN_RT_SBCNT_REG, | |
218 | xudma_tchanrt_read(chn->udma_tchanx, UDMA_CHAN_RT_SBCNT_REG)); | |
d7024191 GS |
219 | } |
220 | ||
221 | static int k3_udma_glue_cfg_tx_chn(struct k3_udma_glue_tx_channel *tx_chn) | |
222 | { | |
223 | const struct udma_tisci_rm *tisci_rm = tx_chn->common.tisci_rm; | |
224 | struct ti_sci_msg_rm_udmap_tx_ch_cfg req; | |
225 | ||
226 | memset(&req, 0, sizeof(req)); | |
227 | ||
228 | req.valid_params = TI_SCI_MSG_VALUE_RM_UDMAP_CH_PAUSE_ON_ERR_VALID | | |
229 | TI_SCI_MSG_VALUE_RM_UDMAP_CH_TX_FILT_EINFO_VALID | | |
230 | TI_SCI_MSG_VALUE_RM_UDMAP_CH_TX_FILT_PSWORDS_VALID | | |
231 | TI_SCI_MSG_VALUE_RM_UDMAP_CH_CHAN_TYPE_VALID | | |
232 | TI_SCI_MSG_VALUE_RM_UDMAP_CH_TX_SUPR_TDPKT_VALID | | |
233 | TI_SCI_MSG_VALUE_RM_UDMAP_CH_FETCH_SIZE_VALID | | |
0ebcf1a2 PU |
234 | TI_SCI_MSG_VALUE_RM_UDMAP_CH_CQ_QNUM_VALID | |
235 | TI_SCI_MSG_VALUE_RM_UDMAP_CH_ATYPE_VALID; | |
d7024191 GS |
236 | req.nav_id = tisci_rm->tisci_dev_id; |
237 | req.index = tx_chn->udma_tchan_id; | |
238 | if (tx_chn->tx_pause_on_err) | |
239 | req.tx_pause_on_err = 1; | |
240 | if (tx_chn->tx_filt_einfo) | |
241 | req.tx_filt_einfo = 1; | |
242 | if (tx_chn->tx_filt_pswords) | |
243 | req.tx_filt_pswords = 1; | |
244 | req.tx_chan_type = TI_SCI_RM_UDMAP_CHAN_TYPE_PKT_PBRR; | |
245 | if (tx_chn->tx_supr_tdpkt) | |
246 | req.tx_supr_tdpkt = 1; | |
247 | req.tx_fetch_size = tx_chn->common.hdesc_size >> 2; | |
248 | req.txcq_qnum = k3_ringacc_get_ring_id(tx_chn->ringtxcq); | |
5b65781d | 249 | req.tx_atype = tx_chn->common.atype_asel; |
d7024191 GS |
250 | |
251 | return tisci_rm->tisci_udmap_ops->tx_ch_cfg(tisci_rm->tisci, &req); | |
252 | } | |
253 | ||
254 | struct k3_udma_glue_tx_channel *k3_udma_glue_request_tx_chn(struct device *dev, | |
255 | const char *name, struct k3_udma_glue_tx_channel_cfg *cfg) | |
256 | { | |
257 | struct k3_udma_glue_tx_channel *tx_chn; | |
258 | int ret; | |
259 | ||
260 | tx_chn = devm_kzalloc(dev, sizeof(*tx_chn), GFP_KERNEL); | |
261 | if (!tx_chn) | |
262 | return ERR_PTR(-ENOMEM); | |
263 | ||
264 | tx_chn->common.dev = dev; | |
265 | tx_chn->common.swdata_size = cfg->swdata_size; | |
266 | tx_chn->tx_pause_on_err = cfg->tx_pause_on_err; | |
267 | tx_chn->tx_filt_einfo = cfg->tx_filt_einfo; | |
268 | tx_chn->tx_filt_pswords = cfg->tx_filt_pswords; | |
269 | tx_chn->tx_supr_tdpkt = cfg->tx_supr_tdpkt; | |
270 | ||
271 | /* parse of udmap channel */ | |
272 | ret = of_k3_udma_glue_parse_chn(dev->of_node, name, | |
273 | &tx_chn->common, true); | |
274 | if (ret) | |
275 | goto err; | |
276 | ||
277 | tx_chn->common.hdesc_size = cppi5_hdesc_calc_size(tx_chn->common.epib, | |
278 | tx_chn->common.psdata_size, | |
279 | tx_chn->common.swdata_size); | |
280 | ||
5b65781d VR |
281 | if (xudma_is_pktdma(tx_chn->common.udmax)) |
282 | tx_chn->udma_tchan_id = tx_chn->common.ep_config->mapped_channel_id; | |
283 | else | |
284 | tx_chn->udma_tchan_id = -1; | |
285 | ||
d7024191 | 286 | /* request and cfg UDMAP TX channel */ |
5b65781d VR |
287 | tx_chn->udma_tchanx = xudma_tchan_get(tx_chn->common.udmax, |
288 | tx_chn->udma_tchan_id); | |
d7024191 GS |
289 | if (IS_ERR(tx_chn->udma_tchanx)) { |
290 | ret = PTR_ERR(tx_chn->udma_tchanx); | |
291 | dev_err(dev, "UDMAX tchanx get err %d\n", ret); | |
292 | goto err; | |
293 | } | |
294 | tx_chn->udma_tchan_id = xudma_tchan_get_id(tx_chn->udma_tchanx); | |
295 | ||
5b65781d VR |
296 | tx_chn->common.chan_dev.class = &k3_udma_glue_devclass; |
297 | tx_chn->common.chan_dev.parent = xudma_get_device(tx_chn->common.udmax); | |
298 | dev_set_name(&tx_chn->common.chan_dev, "tchan%d-0x%04x", | |
299 | tx_chn->udma_tchan_id, tx_chn->common.dst_thread); | |
300 | ret = device_register(&tx_chn->common.chan_dev); | |
301 | if (ret) { | |
302 | dev_err(dev, "Channel Device registration failed %d\n", ret); | |
ac2b9f34 | 303 | put_device(&tx_chn->common.chan_dev); |
5b65781d VR |
304 | tx_chn->common.chan_dev.parent = NULL; |
305 | goto err; | |
306 | } | |
307 | ||
308 | if (xudma_is_pktdma(tx_chn->common.udmax)) { | |
309 | /* prepare the channel device as coherent */ | |
310 | tx_chn->common.chan_dev.dma_coherent = true; | |
311 | dma_coerce_mask_and_coherent(&tx_chn->common.chan_dev, | |
312 | DMA_BIT_MASK(48)); | |
313 | } | |
314 | ||
d7024191 GS |
315 | atomic_set(&tx_chn->free_pkts, cfg->txcq_cfg.size); |
316 | ||
5b65781d VR |
317 | if (xudma_is_pktdma(tx_chn->common.udmax)) |
318 | tx_chn->udma_tflow_id = tx_chn->common.ep_config->default_flow_id; | |
319 | else | |
320 | tx_chn->udma_tflow_id = tx_chn->udma_tchan_id; | |
321 | ||
d7024191 | 322 | /* request and cfg rings */ |
4927b1ab | 323 | ret = k3_ringacc_request_rings_pair(tx_chn->common.ringacc, |
5b65781d | 324 | tx_chn->udma_tflow_id, -1, |
4927b1ab PU |
325 | &tx_chn->ringtx, |
326 | &tx_chn->ringtxcq); | |
327 | if (ret) { | |
328 | dev_err(dev, "Failed to get TX/TXCQ rings %d\n", ret); | |
d7024191 GS |
329 | goto err; |
330 | } | |
331 | ||
d553e2ab PU |
332 | /* Set the dma_dev for the rings to be configured */ |
333 | cfg->tx_cfg.dma_dev = k3_udma_glue_tx_get_dma_device(tx_chn); | |
334 | cfg->txcq_cfg.dma_dev = cfg->tx_cfg.dma_dev; | |
335 | ||
5b65781d VR |
336 | /* Set the ASEL value for DMA rings of PKTDMA */ |
337 | if (xudma_is_pktdma(tx_chn->common.udmax)) { | |
338 | cfg->tx_cfg.asel = tx_chn->common.atype_asel; | |
339 | cfg->txcq_cfg.asel = tx_chn->common.atype_asel; | |
340 | } | |
341 | ||
d7024191 GS |
342 | ret = k3_ringacc_ring_cfg(tx_chn->ringtx, &cfg->tx_cfg); |
343 | if (ret) { | |
344 | dev_err(dev, "Failed to cfg ringtx %d\n", ret); | |
345 | goto err; | |
346 | } | |
347 | ||
348 | ret = k3_ringacc_ring_cfg(tx_chn->ringtxcq, &cfg->txcq_cfg); | |
349 | if (ret) { | |
350 | dev_err(dev, "Failed to cfg ringtx %d\n", ret); | |
351 | goto err; | |
352 | } | |
353 | ||
354 | /* request and cfg psi-l */ | |
355 | tx_chn->common.src_thread = | |
356 | xudma_dev_get_psil_base(tx_chn->common.udmax) + | |
357 | tx_chn->udma_tchan_id; | |
358 | ||
359 | ret = k3_udma_glue_cfg_tx_chn(tx_chn); | |
360 | if (ret) { | |
361 | dev_err(dev, "Failed to cfg tchan %d\n", ret); | |
362 | goto err; | |
363 | } | |
364 | ||
d7024191 GS |
365 | k3_udma_glue_dump_tx_chn(tx_chn); |
366 | ||
367 | return tx_chn; | |
368 | ||
369 | err: | |
370 | k3_udma_glue_release_tx_chn(tx_chn); | |
371 | return ERR_PTR(ret); | |
372 | } | |
373 | EXPORT_SYMBOL_GPL(k3_udma_glue_request_tx_chn); | |
374 | ||
375 | void k3_udma_glue_release_tx_chn(struct k3_udma_glue_tx_channel *tx_chn) | |
376 | { | |
377 | if (tx_chn->psil_paired) { | |
378 | xudma_navss_psil_unpair(tx_chn->common.udmax, | |
379 | tx_chn->common.src_thread, | |
380 | tx_chn->common.dst_thread); | |
381 | tx_chn->psil_paired = false; | |
382 | } | |
383 | ||
384 | if (!IS_ERR_OR_NULL(tx_chn->udma_tchanx)) | |
385 | xudma_tchan_put(tx_chn->common.udmax, | |
386 | tx_chn->udma_tchanx); | |
387 | ||
388 | if (tx_chn->ringtxcq) | |
389 | k3_ringacc_ring_free(tx_chn->ringtxcq); | |
390 | ||
391 | if (tx_chn->ringtx) | |
392 | k3_ringacc_ring_free(tx_chn->ringtx); | |
5b65781d VR |
393 | |
394 | if (tx_chn->common.chan_dev.parent) { | |
395 | device_unregister(&tx_chn->common.chan_dev); | |
396 | tx_chn->common.chan_dev.parent = NULL; | |
397 | } | |
d7024191 GS |
398 | } |
399 | EXPORT_SYMBOL_GPL(k3_udma_glue_release_tx_chn); | |
400 | ||
401 | int k3_udma_glue_push_tx_chn(struct k3_udma_glue_tx_channel *tx_chn, | |
402 | struct cppi5_host_desc_t *desc_tx, | |
403 | dma_addr_t desc_dma) | |
404 | { | |
405 | u32 ringtxcq_id; | |
406 | ||
407 | if (!atomic_add_unless(&tx_chn->free_pkts, -1, 0)) | |
408 | return -ENOMEM; | |
409 | ||
410 | ringtxcq_id = k3_ringacc_get_ring_id(tx_chn->ringtxcq); | |
411 | cppi5_desc_set_retpolicy(&desc_tx->hdr, 0, ringtxcq_id); | |
412 | ||
413 | return k3_ringacc_ring_push(tx_chn->ringtx, &desc_dma); | |
414 | } | |
415 | EXPORT_SYMBOL_GPL(k3_udma_glue_push_tx_chn); | |
416 | ||
417 | int k3_udma_glue_pop_tx_chn(struct k3_udma_glue_tx_channel *tx_chn, | |
418 | dma_addr_t *desc_dma) | |
419 | { | |
420 | int ret; | |
421 | ||
422 | ret = k3_ringacc_ring_pop(tx_chn->ringtxcq, desc_dma); | |
423 | if (!ret) | |
424 | atomic_inc(&tx_chn->free_pkts); | |
425 | ||
426 | return ret; | |
427 | } | |
428 | EXPORT_SYMBOL_GPL(k3_udma_glue_pop_tx_chn); | |
429 | ||
430 | int k3_udma_glue_enable_tx_chn(struct k3_udma_glue_tx_channel *tx_chn) | |
431 | { | |
69973b48 GS |
432 | int ret; |
433 | ||
434 | ret = xudma_navss_psil_pair(tx_chn->common.udmax, | |
435 | tx_chn->common.src_thread, | |
436 | tx_chn->common.dst_thread); | |
437 | if (ret) { | |
438 | dev_err(tx_chn->common.dev, "PSI-L request err %d\n", ret); | |
439 | return ret; | |
440 | } | |
441 | ||
442 | tx_chn->psil_paired = true; | |
443 | ||
bc7e5523 | 444 | xudma_tchanrt_write(tx_chn->udma_tchanx, UDMA_CHAN_RT_PEER_RT_EN_REG, |
52c74d3d | 445 | UDMA_PEER_RT_EN_ENABLE); |
d7024191 | 446 | |
bc7e5523 | 447 | xudma_tchanrt_write(tx_chn->udma_tchanx, UDMA_CHAN_RT_CTL_REG, |
52c74d3d | 448 | UDMA_CHAN_RT_CTL_EN); |
d7024191 GS |
449 | |
450 | k3_udma_glue_dump_tx_rt_chn(tx_chn, "txchn en"); | |
451 | return 0; | |
452 | } | |
453 | EXPORT_SYMBOL_GPL(k3_udma_glue_enable_tx_chn); | |
454 | ||
455 | void k3_udma_glue_disable_tx_chn(struct k3_udma_glue_tx_channel *tx_chn) | |
456 | { | |
457 | k3_udma_glue_dump_tx_rt_chn(tx_chn, "txchn dis1"); | |
458 | ||
bc7e5523 | 459 | xudma_tchanrt_write(tx_chn->udma_tchanx, UDMA_CHAN_RT_CTL_REG, 0); |
d7024191 GS |
460 | |
461 | xudma_tchanrt_write(tx_chn->udma_tchanx, | |
bc7e5523 | 462 | UDMA_CHAN_RT_PEER_RT_EN_REG, 0); |
d7024191 | 463 | k3_udma_glue_dump_tx_rt_chn(tx_chn, "txchn dis2"); |
69973b48 GS |
464 | |
465 | if (tx_chn->psil_paired) { | |
466 | xudma_navss_psil_unpair(tx_chn->common.udmax, | |
467 | tx_chn->common.src_thread, | |
468 | tx_chn->common.dst_thread); | |
469 | tx_chn->psil_paired = false; | |
470 | } | |
d7024191 GS |
471 | } |
472 | EXPORT_SYMBOL_GPL(k3_udma_glue_disable_tx_chn); | |
473 | ||
474 | void k3_udma_glue_tdown_tx_chn(struct k3_udma_glue_tx_channel *tx_chn, | |
475 | bool sync) | |
476 | { | |
477 | int i = 0; | |
478 | u32 val; | |
479 | ||
480 | k3_udma_glue_dump_tx_rt_chn(tx_chn, "txchn tdown1"); | |
481 | ||
bc7e5523 | 482 | xudma_tchanrt_write(tx_chn->udma_tchanx, UDMA_CHAN_RT_CTL_REG, |
d7024191 GS |
483 | UDMA_CHAN_RT_CTL_EN | UDMA_CHAN_RT_CTL_TDOWN); |
484 | ||
bc7e5523 | 485 | val = xudma_tchanrt_read(tx_chn->udma_tchanx, UDMA_CHAN_RT_CTL_REG); |
d7024191 GS |
486 | |
487 | while (sync && (val & UDMA_CHAN_RT_CTL_EN)) { | |
488 | val = xudma_tchanrt_read(tx_chn->udma_tchanx, | |
bc7e5523 | 489 | UDMA_CHAN_RT_CTL_REG); |
d7024191 GS |
490 | udelay(1); |
491 | if (i > K3_UDMAX_TDOWN_TIMEOUT_US) { | |
492 | dev_err(tx_chn->common.dev, "TX tdown timeout\n"); | |
493 | break; | |
494 | } | |
495 | i++; | |
496 | } | |
497 | ||
498 | val = xudma_tchanrt_read(tx_chn->udma_tchanx, | |
bc7e5523 | 499 | UDMA_CHAN_RT_PEER_RT_EN_REG); |
d7024191 GS |
500 | if (sync && (val & UDMA_PEER_RT_EN_ENABLE)) |
501 | dev_err(tx_chn->common.dev, "TX tdown peer not stopped\n"); | |
502 | k3_udma_glue_dump_tx_rt_chn(tx_chn, "txchn tdown2"); | |
503 | } | |
504 | EXPORT_SYMBOL_GPL(k3_udma_glue_tdown_tx_chn); | |
505 | ||
506 | void k3_udma_glue_reset_tx_chn(struct k3_udma_glue_tx_channel *tx_chn, | |
507 | void *data, | |
508 | void (*cleanup)(void *data, dma_addr_t desc_dma)) | |
509 | { | |
5b65781d | 510 | struct device *dev = tx_chn->common.dev; |
d7024191 GS |
511 | dma_addr_t desc_dma; |
512 | int occ_tx, i, ret; | |
513 | ||
d7024191 GS |
514 | /* |
515 | * TXQ reset need to be special way as it is input for udma and its | |
516 | * state cached by udma, so: | |
517 | * 1) save TXQ occ | |
518 | * 2) clean up TXQ and call callback .cleanup() for each desc | |
519 | * 3) reset TXQ in a special way | |
520 | */ | |
521 | occ_tx = k3_ringacc_ring_get_occ(tx_chn->ringtx); | |
5b65781d | 522 | dev_dbg(dev, "TX reset occ_tx %u\n", occ_tx); |
d7024191 GS |
523 | |
524 | for (i = 0; i < occ_tx; i++) { | |
525 | ret = k3_ringacc_ring_pop(tx_chn->ringtx, &desc_dma); | |
526 | if (ret) { | |
5b65781d VR |
527 | if (ret != -ENODATA) |
528 | dev_err(dev, "TX reset pop %d\n", ret); | |
d7024191 GS |
529 | break; |
530 | } | |
531 | cleanup(data, desc_dma); | |
532 | } | |
533 | ||
5b65781d VR |
534 | /* reset TXCQ as it is not input for udma - expected to be empty */ |
535 | k3_ringacc_ring_reset(tx_chn->ringtxcq); | |
d7024191 GS |
536 | k3_ringacc_ring_reset_dma(tx_chn->ringtx, occ_tx); |
537 | } | |
538 | EXPORT_SYMBOL_GPL(k3_udma_glue_reset_tx_chn); | |
539 | ||
540 | u32 k3_udma_glue_tx_get_hdesc_size(struct k3_udma_glue_tx_channel *tx_chn) | |
541 | { | |
542 | return tx_chn->common.hdesc_size; | |
543 | } | |
544 | EXPORT_SYMBOL_GPL(k3_udma_glue_tx_get_hdesc_size); | |
545 | ||
546 | u32 k3_udma_glue_tx_get_txcq_id(struct k3_udma_glue_tx_channel *tx_chn) | |
547 | { | |
548 | return k3_ringacc_get_ring_id(tx_chn->ringtxcq); | |
549 | } | |
550 | EXPORT_SYMBOL_GPL(k3_udma_glue_tx_get_txcq_id); | |
551 | ||
552 | int k3_udma_glue_tx_get_irq(struct k3_udma_glue_tx_channel *tx_chn) | |
553 | { | |
5b65781d VR |
554 | if (xudma_is_pktdma(tx_chn->common.udmax)) { |
555 | tx_chn->virq = xudma_pktdma_tflow_get_irq(tx_chn->common.udmax, | |
556 | tx_chn->udma_tflow_id); | |
557 | } else { | |
558 | tx_chn->virq = k3_ringacc_get_ring_irq_num(tx_chn->ringtxcq); | |
559 | } | |
d7024191 | 560 | |
f9a1d321 DC |
561 | if (!tx_chn->virq) |
562 | return -ENXIO; | |
563 | ||
d7024191 GS |
564 | return tx_chn->virq; |
565 | } | |
566 | EXPORT_SYMBOL_GPL(k3_udma_glue_tx_get_irq); | |
567 | ||
426506a7 PU |
568 | struct device * |
569 | k3_udma_glue_tx_get_dma_device(struct k3_udma_glue_tx_channel *tx_chn) | |
570 | { | |
5b65781d VR |
571 | if (xudma_is_pktdma(tx_chn->common.udmax) && |
572 | (tx_chn->common.atype_asel == 14 || tx_chn->common.atype_asel == 15)) | |
573 | return &tx_chn->common.chan_dev; | |
574 | ||
426506a7 PU |
575 | return xudma_get_device(tx_chn->common.udmax); |
576 | } | |
577 | EXPORT_SYMBOL_GPL(k3_udma_glue_tx_get_dma_device); | |
578 | ||
5b65781d VR |
579 | void k3_udma_glue_tx_dma_to_cppi5_addr(struct k3_udma_glue_tx_channel *tx_chn, |
580 | dma_addr_t *addr) | |
581 | { | |
582 | if (!xudma_is_pktdma(tx_chn->common.udmax) || | |
583 | !tx_chn->common.atype_asel) | |
584 | return; | |
585 | ||
586 | *addr |= (u64)tx_chn->common.atype_asel << K3_ADDRESS_ASEL_SHIFT; | |
587 | } | |
588 | EXPORT_SYMBOL_GPL(k3_udma_glue_tx_dma_to_cppi5_addr); | |
589 | ||
590 | void k3_udma_glue_tx_cppi5_to_dma_addr(struct k3_udma_glue_tx_channel *tx_chn, | |
591 | dma_addr_t *addr) | |
592 | { | |
593 | if (!xudma_is_pktdma(tx_chn->common.udmax) || | |
594 | !tx_chn->common.atype_asel) | |
595 | return; | |
596 | ||
597 | *addr &= (u64)GENMASK(K3_ADDRESS_ASEL_SHIFT - 1, 0); | |
598 | } | |
599 | EXPORT_SYMBOL_GPL(k3_udma_glue_tx_cppi5_to_dma_addr); | |
600 | ||
d7024191 GS |
601 | static int k3_udma_glue_cfg_rx_chn(struct k3_udma_glue_rx_channel *rx_chn) |
602 | { | |
603 | const struct udma_tisci_rm *tisci_rm = rx_chn->common.tisci_rm; | |
604 | struct ti_sci_msg_rm_udmap_rx_ch_cfg req; | |
605 | int ret; | |
606 | ||
607 | memset(&req, 0, sizeof(req)); | |
608 | ||
609 | req.valid_params = TI_SCI_MSG_VALUE_RM_UDMAP_CH_FETCH_SIZE_VALID | | |
610 | TI_SCI_MSG_VALUE_RM_UDMAP_CH_CQ_QNUM_VALID | | |
611 | TI_SCI_MSG_VALUE_RM_UDMAP_CH_CHAN_TYPE_VALID | | |
0ebcf1a2 | 612 | TI_SCI_MSG_VALUE_RM_UDMAP_CH_ATYPE_VALID; |
d7024191 GS |
613 | |
614 | req.nav_id = tisci_rm->tisci_dev_id; | |
615 | req.index = rx_chn->udma_rchan_id; | |
616 | req.rx_fetch_size = rx_chn->common.hdesc_size >> 2; | |
617 | /* | |
618 | * TODO: we can't support rxcq_qnum/RCHAN[a]_RCQ cfg with current sysfw | |
619 | * and udmax impl, so just configure it to invalid value. | |
620 | * req.rxcq_qnum = k3_ringacc_get_ring_id(rx_chn->flows[0].ringrx); | |
621 | */ | |
622 | req.rxcq_qnum = 0xFFFF; | |
5b65781d VR |
623 | if (!xudma_is_pktdma(rx_chn->common.udmax) && rx_chn->flow_num && |
624 | rx_chn->flow_id_base != rx_chn->udma_rchan_id) { | |
d7024191 | 625 | /* Default flow + extra ones */ |
5b65781d VR |
626 | req.valid_params |= TI_SCI_MSG_VALUE_RM_UDMAP_CH_RX_FLOWID_START_VALID | |
627 | TI_SCI_MSG_VALUE_RM_UDMAP_CH_RX_FLOWID_CNT_VALID; | |
d7024191 GS |
628 | req.flowid_start = rx_chn->flow_id_base; |
629 | req.flowid_cnt = rx_chn->flow_num; | |
630 | } | |
631 | req.rx_chan_type = TI_SCI_RM_UDMAP_CHAN_TYPE_PKT_PBRR; | |
5b65781d | 632 | req.rx_atype = rx_chn->common.atype_asel; |
d7024191 GS |
633 | |
634 | ret = tisci_rm->tisci_udmap_ops->rx_ch_cfg(tisci_rm->tisci, &req); | |
635 | if (ret) | |
636 | dev_err(rx_chn->common.dev, "rchan%d cfg failed %d\n", | |
637 | rx_chn->udma_rchan_id, ret); | |
638 | ||
639 | return ret; | |
640 | } | |
641 | ||
642 | static void k3_udma_glue_release_rx_flow(struct k3_udma_glue_rx_channel *rx_chn, | |
643 | u32 flow_num) | |
644 | { | |
645 | struct k3_udma_glue_rx_flow *flow = &rx_chn->flows[flow_num]; | |
646 | ||
647 | if (IS_ERR_OR_NULL(flow->udma_rflow)) | |
648 | return; | |
649 | ||
650 | if (flow->ringrxfdq) | |
651 | k3_ringacc_ring_free(flow->ringrxfdq); | |
652 | ||
653 | if (flow->ringrx) | |
654 | k3_ringacc_ring_free(flow->ringrx); | |
655 | ||
656 | xudma_rflow_put(rx_chn->common.udmax, flow->udma_rflow); | |
657 | flow->udma_rflow = NULL; | |
658 | rx_chn->flows_ready--; | |
659 | } | |
660 | ||
661 | static int k3_udma_glue_cfg_rx_flow(struct k3_udma_glue_rx_channel *rx_chn, | |
662 | u32 flow_idx, | |
663 | struct k3_udma_glue_rx_flow_cfg *flow_cfg) | |
664 | { | |
665 | struct k3_udma_glue_rx_flow *flow = &rx_chn->flows[flow_idx]; | |
666 | const struct udma_tisci_rm *tisci_rm = rx_chn->common.tisci_rm; | |
667 | struct device *dev = rx_chn->common.dev; | |
668 | struct ti_sci_msg_rm_udmap_flow_cfg req; | |
669 | int rx_ring_id; | |
670 | int rx_ringfdq_id; | |
671 | int ret = 0; | |
672 | ||
673 | flow->udma_rflow = xudma_rflow_get(rx_chn->common.udmax, | |
674 | flow->udma_rflow_id); | |
675 | if (IS_ERR(flow->udma_rflow)) { | |
676 | ret = PTR_ERR(flow->udma_rflow); | |
677 | dev_err(dev, "UDMAX rflow get err %d\n", ret); | |
018af9be | 678 | return ret; |
d7024191 GS |
679 | } |
680 | ||
681 | if (flow->udma_rflow_id != xudma_rflow_get_id(flow->udma_rflow)) { | |
018af9be CJ |
682 | ret = -ENODEV; |
683 | goto err_rflow_put; | |
d7024191 GS |
684 | } |
685 | ||
5b65781d VR |
686 | if (xudma_is_pktdma(rx_chn->common.udmax)) { |
687 | rx_ringfdq_id = flow->udma_rflow_id + | |
688 | xudma_get_rflow_ring_offset(rx_chn->common.udmax); | |
689 | rx_ring_id = 0; | |
690 | } else { | |
691 | rx_ring_id = flow_cfg->ring_rxq_id; | |
692 | rx_ringfdq_id = flow_cfg->ring_rxfdq0_id; | |
693 | } | |
694 | ||
d7024191 | 695 | /* request and cfg rings */ |
4927b1ab | 696 | ret = k3_ringacc_request_rings_pair(rx_chn->common.ringacc, |
5b65781d | 697 | rx_ringfdq_id, rx_ring_id, |
4927b1ab PU |
698 | &flow->ringrxfdq, |
699 | &flow->ringrx); | |
700 | if (ret) { | |
701 | dev_err(dev, "Failed to get RX/RXFDQ rings %d\n", ret); | |
018af9be | 702 | goto err_rflow_put; |
d7024191 GS |
703 | } |
704 | ||
d553e2ab PU |
705 | /* Set the dma_dev for the rings to be configured */ |
706 | flow_cfg->rx_cfg.dma_dev = k3_udma_glue_rx_get_dma_device(rx_chn); | |
707 | flow_cfg->rxfdq_cfg.dma_dev = flow_cfg->rx_cfg.dma_dev; | |
708 | ||
5b65781d VR |
709 | /* Set the ASEL value for DMA rings of PKTDMA */ |
710 | if (xudma_is_pktdma(rx_chn->common.udmax)) { | |
711 | flow_cfg->rx_cfg.asel = rx_chn->common.atype_asel; | |
712 | flow_cfg->rxfdq_cfg.asel = rx_chn->common.atype_asel; | |
713 | } | |
714 | ||
d7024191 GS |
715 | ret = k3_ringacc_ring_cfg(flow->ringrx, &flow_cfg->rx_cfg); |
716 | if (ret) { | |
717 | dev_err(dev, "Failed to cfg ringrx %d\n", ret); | |
018af9be | 718 | goto err_ringrxfdq_free; |
d7024191 GS |
719 | } |
720 | ||
721 | ret = k3_ringacc_ring_cfg(flow->ringrxfdq, &flow_cfg->rxfdq_cfg); | |
722 | if (ret) { | |
723 | dev_err(dev, "Failed to cfg ringrxfdq %d\n", ret); | |
018af9be | 724 | goto err_ringrxfdq_free; |
d7024191 GS |
725 | } |
726 | ||
727 | if (rx_chn->remote) { | |
728 | rx_ring_id = TI_SCI_RESOURCE_NULL; | |
729 | rx_ringfdq_id = TI_SCI_RESOURCE_NULL; | |
730 | } else { | |
731 | rx_ring_id = k3_ringacc_get_ring_id(flow->ringrx); | |
732 | rx_ringfdq_id = k3_ringacc_get_ring_id(flow->ringrxfdq); | |
733 | } | |
734 | ||
735 | memset(&req, 0, sizeof(req)); | |
736 | ||
737 | req.valid_params = | |
738 | TI_SCI_MSG_VALUE_RM_UDMAP_FLOW_EINFO_PRESENT_VALID | | |
739 | TI_SCI_MSG_VALUE_RM_UDMAP_FLOW_PSINFO_PRESENT_VALID | | |
740 | TI_SCI_MSG_VALUE_RM_UDMAP_FLOW_ERROR_HANDLING_VALID | | |
741 | TI_SCI_MSG_VALUE_RM_UDMAP_FLOW_DESC_TYPE_VALID | | |
742 | TI_SCI_MSG_VALUE_RM_UDMAP_FLOW_DEST_QNUM_VALID | | |
743 | TI_SCI_MSG_VALUE_RM_UDMAP_FLOW_SRC_TAG_HI_SEL_VALID | | |
744 | TI_SCI_MSG_VALUE_RM_UDMAP_FLOW_SRC_TAG_LO_SEL_VALID | | |
745 | TI_SCI_MSG_VALUE_RM_UDMAP_FLOW_DEST_TAG_HI_SEL_VALID | | |
746 | TI_SCI_MSG_VALUE_RM_UDMAP_FLOW_DEST_TAG_LO_SEL_VALID | | |
747 | TI_SCI_MSG_VALUE_RM_UDMAP_FLOW_FDQ0_SZ0_QNUM_VALID | | |
748 | TI_SCI_MSG_VALUE_RM_UDMAP_FLOW_FDQ1_QNUM_VALID | | |
749 | TI_SCI_MSG_VALUE_RM_UDMAP_FLOW_FDQ2_QNUM_VALID | | |
750 | TI_SCI_MSG_VALUE_RM_UDMAP_FLOW_FDQ3_QNUM_VALID; | |
751 | req.nav_id = tisci_rm->tisci_dev_id; | |
752 | req.flow_index = flow->udma_rflow_id; | |
753 | if (rx_chn->common.epib) | |
754 | req.rx_einfo_present = 1; | |
755 | if (rx_chn->common.psdata_size) | |
756 | req.rx_psinfo_present = 1; | |
757 | if (flow_cfg->rx_error_handling) | |
758 | req.rx_error_handling = 1; | |
759 | req.rx_desc_type = 0; | |
760 | req.rx_dest_qnum = rx_ring_id; | |
761 | req.rx_src_tag_hi_sel = 0; | |
762 | req.rx_src_tag_lo_sel = flow_cfg->src_tag_lo_sel; | |
763 | req.rx_dest_tag_hi_sel = 0; | |
764 | req.rx_dest_tag_lo_sel = 0; | |
765 | req.rx_fdq0_sz0_qnum = rx_ringfdq_id; | |
766 | req.rx_fdq1_qnum = rx_ringfdq_id; | |
767 | req.rx_fdq2_qnum = rx_ringfdq_id; | |
768 | req.rx_fdq3_qnum = rx_ringfdq_id; | |
769 | ||
770 | ret = tisci_rm->tisci_udmap_ops->rx_flow_cfg(tisci_rm->tisci, &req); | |
771 | if (ret) { | |
772 | dev_err(dev, "flow%d config failed: %d\n", flow->udma_rflow_id, | |
773 | ret); | |
018af9be | 774 | goto err_ringrxfdq_free; |
d7024191 GS |
775 | } |
776 | ||
777 | rx_chn->flows_ready++; | |
778 | dev_dbg(dev, "flow%d config done. ready:%d\n", | |
779 | flow->udma_rflow_id, rx_chn->flows_ready); | |
780 | ||
781 | return 0; | |
018af9be CJ |
782 | |
783 | err_ringrxfdq_free: | |
784 | k3_ringacc_ring_free(flow->ringrxfdq); | |
018af9be CJ |
785 | k3_ringacc_ring_free(flow->ringrx); |
786 | ||
787 | err_rflow_put: | |
788 | xudma_rflow_put(rx_chn->common.udmax, flow->udma_rflow); | |
789 | flow->udma_rflow = NULL; | |
790 | ||
d7024191 GS |
791 | return ret; |
792 | } | |
793 | ||
794 | static void k3_udma_glue_dump_rx_chn(struct k3_udma_glue_rx_channel *chn) | |
795 | { | |
796 | struct device *dev = chn->common.dev; | |
797 | ||
798 | dev_dbg(dev, "dump_rx_chn:\n" | |
799 | "udma_rchan_id: %d\n" | |
800 | "src_thread: %08x\n" | |
801 | "dst_thread: %08x\n" | |
802 | "epib: %d\n" | |
803 | "hdesc_size: %u\n" | |
804 | "psdata_size: %u\n" | |
805 | "swdata_size: %u\n" | |
806 | "flow_id_base: %d\n" | |
807 | "flow_num: %d\n", | |
808 | chn->udma_rchan_id, | |
809 | chn->common.src_thread, | |
810 | chn->common.dst_thread, | |
811 | chn->common.epib, | |
812 | chn->common.hdesc_size, | |
813 | chn->common.psdata_size, | |
814 | chn->common.swdata_size, | |
815 | chn->flow_id_base, | |
816 | chn->flow_num); | |
817 | } | |
818 | ||
819 | static void k3_udma_glue_dump_rx_rt_chn(struct k3_udma_glue_rx_channel *chn, | |
820 | char *mark) | |
821 | { | |
822 | struct device *dev = chn->common.dev; | |
823 | ||
824 | dev_dbg(dev, "=== dump ===> %s\n", mark); | |
825 | ||
bc7e5523 PU |
826 | dev_dbg(dev, "0x%08X: %08X\n", UDMA_CHAN_RT_CTL_REG, |
827 | xudma_rchanrt_read(chn->udma_rchanx, UDMA_CHAN_RT_CTL_REG)); | |
828 | dev_dbg(dev, "0x%08X: %08X\n", UDMA_CHAN_RT_PEER_RT_EN_REG, | |
d7024191 | 829 | xudma_rchanrt_read(chn->udma_rchanx, |
bc7e5523 PU |
830 | UDMA_CHAN_RT_PEER_RT_EN_REG)); |
831 | dev_dbg(dev, "0x%08X: %08X\n", UDMA_CHAN_RT_PCNT_REG, | |
832 | xudma_rchanrt_read(chn->udma_rchanx, UDMA_CHAN_RT_PCNT_REG)); | |
833 | dev_dbg(dev, "0x%08X: %08X\n", UDMA_CHAN_RT_BCNT_REG, | |
834 | xudma_rchanrt_read(chn->udma_rchanx, UDMA_CHAN_RT_BCNT_REG)); | |
835 | dev_dbg(dev, "0x%08X: %08X\n", UDMA_CHAN_RT_SBCNT_REG, | |
836 | xudma_rchanrt_read(chn->udma_rchanx, UDMA_CHAN_RT_SBCNT_REG)); | |
d7024191 GS |
837 | } |
838 | ||
839 | static int | |
840 | k3_udma_glue_allocate_rx_flows(struct k3_udma_glue_rx_channel *rx_chn, | |
841 | struct k3_udma_glue_rx_channel_cfg *cfg) | |
842 | { | |
843 | int ret; | |
844 | ||
845 | /* default rflow */ | |
846 | if (cfg->flow_id_use_rxchan_id) | |
847 | return 0; | |
848 | ||
849 | /* not a GP rflows */ | |
850 | if (rx_chn->flow_id_base != -1 && | |
851 | !xudma_rflow_is_gp(rx_chn->common.udmax, rx_chn->flow_id_base)) | |
852 | return 0; | |
853 | ||
854 | /* Allocate range of GP rflows */ | |
855 | ret = xudma_alloc_gp_rflow_range(rx_chn->common.udmax, | |
856 | rx_chn->flow_id_base, | |
857 | rx_chn->flow_num); | |
858 | if (ret < 0) { | |
859 | dev_err(rx_chn->common.dev, "UDMAX reserve_rflow %d cnt:%d err: %d\n", | |
860 | rx_chn->flow_id_base, rx_chn->flow_num, ret); | |
861 | return ret; | |
862 | } | |
863 | rx_chn->flow_id_base = ret; | |
864 | ||
865 | return 0; | |
866 | } | |
867 | ||
868 | static struct k3_udma_glue_rx_channel * | |
869 | k3_udma_glue_request_rx_chn_priv(struct device *dev, const char *name, | |
870 | struct k3_udma_glue_rx_channel_cfg *cfg) | |
871 | { | |
872 | struct k3_udma_glue_rx_channel *rx_chn; | |
5b65781d | 873 | struct psil_endpoint_config *ep_cfg; |
d7024191 GS |
874 | int ret, i; |
875 | ||
876 | if (cfg->flow_id_num <= 0) | |
877 | return ERR_PTR(-EINVAL); | |
878 | ||
879 | if (cfg->flow_id_num != 1 && | |
880 | (cfg->def_flow_cfg || cfg->flow_id_use_rxchan_id)) | |
881 | return ERR_PTR(-EINVAL); | |
882 | ||
883 | rx_chn = devm_kzalloc(dev, sizeof(*rx_chn), GFP_KERNEL); | |
884 | if (!rx_chn) | |
885 | return ERR_PTR(-ENOMEM); | |
886 | ||
887 | rx_chn->common.dev = dev; | |
888 | rx_chn->common.swdata_size = cfg->swdata_size; | |
889 | rx_chn->remote = false; | |
890 | ||
891 | /* parse of udmap channel */ | |
892 | ret = of_k3_udma_glue_parse_chn(dev->of_node, name, | |
893 | &rx_chn->common, false); | |
894 | if (ret) | |
895 | goto err; | |
896 | ||
897 | rx_chn->common.hdesc_size = cppi5_hdesc_calc_size(rx_chn->common.epib, | |
898 | rx_chn->common.psdata_size, | |
899 | rx_chn->common.swdata_size); | |
900 | ||
5b65781d VR |
901 | ep_cfg = rx_chn->common.ep_config; |
902 | ||
903 | if (xudma_is_pktdma(rx_chn->common.udmax)) | |
904 | rx_chn->udma_rchan_id = ep_cfg->mapped_channel_id; | |
905 | else | |
906 | rx_chn->udma_rchan_id = -1; | |
907 | ||
d7024191 | 908 | /* request and cfg UDMAP RX channel */ |
5b65781d VR |
909 | rx_chn->udma_rchanx = xudma_rchan_get(rx_chn->common.udmax, |
910 | rx_chn->udma_rchan_id); | |
d7024191 GS |
911 | if (IS_ERR(rx_chn->udma_rchanx)) { |
912 | ret = PTR_ERR(rx_chn->udma_rchanx); | |
913 | dev_err(dev, "UDMAX rchanx get err %d\n", ret); | |
914 | goto err; | |
915 | } | |
916 | rx_chn->udma_rchan_id = xudma_rchan_get_id(rx_chn->udma_rchanx); | |
917 | ||
5b65781d VR |
918 | rx_chn->common.chan_dev.class = &k3_udma_glue_devclass; |
919 | rx_chn->common.chan_dev.parent = xudma_get_device(rx_chn->common.udmax); | |
920 | dev_set_name(&rx_chn->common.chan_dev, "rchan%d-0x%04x", | |
921 | rx_chn->udma_rchan_id, rx_chn->common.src_thread); | |
922 | ret = device_register(&rx_chn->common.chan_dev); | |
923 | if (ret) { | |
924 | dev_err(dev, "Channel Device registration failed %d\n", ret); | |
ac2b9f34 | 925 | put_device(&rx_chn->common.chan_dev); |
5b65781d VR |
926 | rx_chn->common.chan_dev.parent = NULL; |
927 | goto err; | |
928 | } | |
d7024191 | 929 | |
5b65781d VR |
930 | if (xudma_is_pktdma(rx_chn->common.udmax)) { |
931 | /* prepare the channel device as coherent */ | |
932 | rx_chn->common.chan_dev.dma_coherent = true; | |
933 | dma_coerce_mask_and_coherent(&rx_chn->common.chan_dev, | |
934 | DMA_BIT_MASK(48)); | |
935 | } | |
936 | ||
937 | if (xudma_is_pktdma(rx_chn->common.udmax)) { | |
938 | int flow_start = cfg->flow_id_base; | |
939 | int flow_end; | |
940 | ||
941 | if (flow_start == -1) | |
942 | flow_start = ep_cfg->flow_start; | |
943 | ||
944 | flow_end = flow_start + cfg->flow_id_num - 1; | |
945 | if (flow_start < ep_cfg->flow_start || | |
946 | flow_end > (ep_cfg->flow_start + ep_cfg->flow_num - 1)) { | |
947 | dev_err(dev, "Invalid flow range requested\n"); | |
948 | ret = -EINVAL; | |
949 | goto err; | |
950 | } | |
951 | rx_chn->flow_id_base = flow_start; | |
952 | } else { | |
953 | rx_chn->flow_id_base = cfg->flow_id_base; | |
954 | ||
955 | /* Use RX channel id as flow id: target dev can't generate flow_id */ | |
956 | if (cfg->flow_id_use_rxchan_id) | |
957 | rx_chn->flow_id_base = rx_chn->udma_rchan_id; | |
958 | } | |
959 | ||
960 | rx_chn->flow_num = cfg->flow_id_num; | |
d7024191 GS |
961 | |
962 | rx_chn->flows = devm_kcalloc(dev, rx_chn->flow_num, | |
963 | sizeof(*rx_chn->flows), GFP_KERNEL); | |
964 | if (!rx_chn->flows) { | |
965 | ret = -ENOMEM; | |
966 | goto err; | |
967 | } | |
968 | ||
969 | ret = k3_udma_glue_allocate_rx_flows(rx_chn, cfg); | |
970 | if (ret) | |
971 | goto err; | |
972 | ||
973 | for (i = 0; i < rx_chn->flow_num; i++) | |
974 | rx_chn->flows[i].udma_rflow_id = rx_chn->flow_id_base + i; | |
975 | ||
976 | /* request and cfg psi-l */ | |
977 | rx_chn->common.dst_thread = | |
978 | xudma_dev_get_psil_base(rx_chn->common.udmax) + | |
979 | rx_chn->udma_rchan_id; | |
980 | ||
981 | ret = k3_udma_glue_cfg_rx_chn(rx_chn); | |
982 | if (ret) { | |
983 | dev_err(dev, "Failed to cfg rchan %d\n", ret); | |
984 | goto err; | |
985 | } | |
986 | ||
987 | /* init default RX flow only if flow_num = 1 */ | |
988 | if (cfg->def_flow_cfg) { | |
989 | ret = k3_udma_glue_cfg_rx_flow(rx_chn, 0, cfg->def_flow_cfg); | |
990 | if (ret) | |
991 | goto err; | |
992 | } | |
993 | ||
d7024191 GS |
994 | k3_udma_glue_dump_rx_chn(rx_chn); |
995 | ||
996 | return rx_chn; | |
997 | ||
998 | err: | |
999 | k3_udma_glue_release_rx_chn(rx_chn); | |
1000 | return ERR_PTR(ret); | |
1001 | } | |
1002 | ||
1003 | static struct k3_udma_glue_rx_channel * | |
1004 | k3_udma_glue_request_remote_rx_chn(struct device *dev, const char *name, | |
1005 | struct k3_udma_glue_rx_channel_cfg *cfg) | |
1006 | { | |
1007 | struct k3_udma_glue_rx_channel *rx_chn; | |
1008 | int ret, i; | |
1009 | ||
1010 | if (cfg->flow_id_num <= 0 || | |
1011 | cfg->flow_id_use_rxchan_id || | |
1012 | cfg->def_flow_cfg || | |
1013 | cfg->flow_id_base < 0) | |
1014 | return ERR_PTR(-EINVAL); | |
1015 | ||
1016 | /* | |
1017 | * Remote RX channel is under control of Remote CPU core, so | |
1018 | * Linux can only request and manipulate by dedicated RX flows | |
1019 | */ | |
1020 | ||
1021 | rx_chn = devm_kzalloc(dev, sizeof(*rx_chn), GFP_KERNEL); | |
1022 | if (!rx_chn) | |
1023 | return ERR_PTR(-ENOMEM); | |
1024 | ||
1025 | rx_chn->common.dev = dev; | |
1026 | rx_chn->common.swdata_size = cfg->swdata_size; | |
1027 | rx_chn->remote = true; | |
1028 | rx_chn->udma_rchan_id = -1; | |
1029 | rx_chn->flow_num = cfg->flow_id_num; | |
1030 | rx_chn->flow_id_base = cfg->flow_id_base; | |
1031 | rx_chn->psil_paired = false; | |
1032 | ||
1033 | /* parse of udmap channel */ | |
1034 | ret = of_k3_udma_glue_parse_chn(dev->of_node, name, | |
1035 | &rx_chn->common, false); | |
1036 | if (ret) | |
1037 | goto err; | |
1038 | ||
1039 | rx_chn->common.hdesc_size = cppi5_hdesc_calc_size(rx_chn->common.epib, | |
1040 | rx_chn->common.psdata_size, | |
1041 | rx_chn->common.swdata_size); | |
1042 | ||
1043 | rx_chn->flows = devm_kcalloc(dev, rx_chn->flow_num, | |
1044 | sizeof(*rx_chn->flows), GFP_KERNEL); | |
1045 | if (!rx_chn->flows) { | |
1046 | ret = -ENOMEM; | |
1047 | goto err; | |
1048 | } | |
1049 | ||
5b65781d VR |
1050 | rx_chn->common.chan_dev.class = &k3_udma_glue_devclass; |
1051 | rx_chn->common.chan_dev.parent = xudma_get_device(rx_chn->common.udmax); | |
1052 | dev_set_name(&rx_chn->common.chan_dev, "rchan_remote-0x%04x", | |
1053 | rx_chn->common.src_thread); | |
1054 | ret = device_register(&rx_chn->common.chan_dev); | |
1055 | if (ret) { | |
1056 | dev_err(dev, "Channel Device registration failed %d\n", ret); | |
ac2b9f34 | 1057 | put_device(&rx_chn->common.chan_dev); |
5b65781d VR |
1058 | rx_chn->common.chan_dev.parent = NULL; |
1059 | goto err; | |
1060 | } | |
1061 | ||
1062 | if (xudma_is_pktdma(rx_chn->common.udmax)) { | |
1063 | /* prepare the channel device as coherent */ | |
1064 | rx_chn->common.chan_dev.dma_coherent = true; | |
1065 | dma_coerce_mask_and_coherent(&rx_chn->common.chan_dev, | |
1066 | DMA_BIT_MASK(48)); | |
1067 | } | |
1068 | ||
d7024191 GS |
1069 | ret = k3_udma_glue_allocate_rx_flows(rx_chn, cfg); |
1070 | if (ret) | |
1071 | goto err; | |
1072 | ||
1073 | for (i = 0; i < rx_chn->flow_num; i++) | |
1074 | rx_chn->flows[i].udma_rflow_id = rx_chn->flow_id_base + i; | |
1075 | ||
1076 | k3_udma_glue_dump_rx_chn(rx_chn); | |
1077 | ||
1078 | return rx_chn; | |
1079 | ||
1080 | err: | |
1081 | k3_udma_glue_release_rx_chn(rx_chn); | |
1082 | return ERR_PTR(ret); | |
1083 | } | |
1084 | ||
1085 | struct k3_udma_glue_rx_channel * | |
1086 | k3_udma_glue_request_rx_chn(struct device *dev, const char *name, | |
1087 | struct k3_udma_glue_rx_channel_cfg *cfg) | |
1088 | { | |
1089 | if (cfg->remote) | |
1090 | return k3_udma_glue_request_remote_rx_chn(dev, name, cfg); | |
1091 | else | |
1092 | return k3_udma_glue_request_rx_chn_priv(dev, name, cfg); | |
1093 | } | |
1094 | EXPORT_SYMBOL_GPL(k3_udma_glue_request_rx_chn); | |
1095 | ||
1096 | void k3_udma_glue_release_rx_chn(struct k3_udma_glue_rx_channel *rx_chn) | |
1097 | { | |
1098 | int i; | |
1099 | ||
1100 | if (IS_ERR_OR_NULL(rx_chn->common.udmax)) | |
1101 | return; | |
1102 | ||
1103 | if (rx_chn->psil_paired) { | |
1104 | xudma_navss_psil_unpair(rx_chn->common.udmax, | |
1105 | rx_chn->common.src_thread, | |
1106 | rx_chn->common.dst_thread); | |
1107 | rx_chn->psil_paired = false; | |
1108 | } | |
1109 | ||
1110 | for (i = 0; i < rx_chn->flow_num; i++) | |
1111 | k3_udma_glue_release_rx_flow(rx_chn, i); | |
1112 | ||
1113 | if (xudma_rflow_is_gp(rx_chn->common.udmax, rx_chn->flow_id_base)) | |
1114 | xudma_free_gp_rflow_range(rx_chn->common.udmax, | |
1115 | rx_chn->flow_id_base, | |
1116 | rx_chn->flow_num); | |
1117 | ||
1118 | if (!IS_ERR_OR_NULL(rx_chn->udma_rchanx)) | |
1119 | xudma_rchan_put(rx_chn->common.udmax, | |
1120 | rx_chn->udma_rchanx); | |
5b65781d VR |
1121 | |
1122 | if (rx_chn->common.chan_dev.parent) { | |
1123 | device_unregister(&rx_chn->common.chan_dev); | |
1124 | rx_chn->common.chan_dev.parent = NULL; | |
1125 | } | |
d7024191 GS |
1126 | } |
1127 | EXPORT_SYMBOL_GPL(k3_udma_glue_release_rx_chn); | |
1128 | ||
1129 | int k3_udma_glue_rx_flow_init(struct k3_udma_glue_rx_channel *rx_chn, | |
1130 | u32 flow_idx, | |
1131 | struct k3_udma_glue_rx_flow_cfg *flow_cfg) | |
1132 | { | |
1133 | if (flow_idx >= rx_chn->flow_num) | |
1134 | return -EINVAL; | |
1135 | ||
1136 | return k3_udma_glue_cfg_rx_flow(rx_chn, flow_idx, flow_cfg); | |
1137 | } | |
1138 | EXPORT_SYMBOL_GPL(k3_udma_glue_rx_flow_init); | |
1139 | ||
1140 | u32 k3_udma_glue_rx_flow_get_fdq_id(struct k3_udma_glue_rx_channel *rx_chn, | |
1141 | u32 flow_idx) | |
1142 | { | |
1143 | struct k3_udma_glue_rx_flow *flow; | |
1144 | ||
1145 | if (flow_idx >= rx_chn->flow_num) | |
1146 | return -EINVAL; | |
1147 | ||
1148 | flow = &rx_chn->flows[flow_idx]; | |
1149 | ||
1150 | return k3_ringacc_get_ring_id(flow->ringrxfdq); | |
1151 | } | |
1152 | EXPORT_SYMBOL_GPL(k3_udma_glue_rx_flow_get_fdq_id); | |
1153 | ||
1154 | u32 k3_udma_glue_rx_get_flow_id_base(struct k3_udma_glue_rx_channel *rx_chn) | |
1155 | { | |
1156 | return rx_chn->flow_id_base; | |
1157 | } | |
1158 | EXPORT_SYMBOL_GPL(k3_udma_glue_rx_get_flow_id_base); | |
1159 | ||
1160 | int k3_udma_glue_rx_flow_enable(struct k3_udma_glue_rx_channel *rx_chn, | |
1161 | u32 flow_idx) | |
1162 | { | |
1163 | struct k3_udma_glue_rx_flow *flow = &rx_chn->flows[flow_idx]; | |
1164 | const struct udma_tisci_rm *tisci_rm = rx_chn->common.tisci_rm; | |
1165 | struct device *dev = rx_chn->common.dev; | |
1166 | struct ti_sci_msg_rm_udmap_flow_cfg req; | |
1167 | int rx_ring_id; | |
1168 | int rx_ringfdq_id; | |
1169 | int ret = 0; | |
1170 | ||
1171 | if (!rx_chn->remote) | |
1172 | return -EINVAL; | |
1173 | ||
1174 | rx_ring_id = k3_ringacc_get_ring_id(flow->ringrx); | |
1175 | rx_ringfdq_id = k3_ringacc_get_ring_id(flow->ringrxfdq); | |
1176 | ||
1177 | memset(&req, 0, sizeof(req)); | |
1178 | ||
1179 | req.valid_params = | |
1180 | TI_SCI_MSG_VALUE_RM_UDMAP_FLOW_DEST_QNUM_VALID | | |
1181 | TI_SCI_MSG_VALUE_RM_UDMAP_FLOW_FDQ0_SZ0_QNUM_VALID | | |
1182 | TI_SCI_MSG_VALUE_RM_UDMAP_FLOW_FDQ1_QNUM_VALID | | |
1183 | TI_SCI_MSG_VALUE_RM_UDMAP_FLOW_FDQ2_QNUM_VALID | | |
1184 | TI_SCI_MSG_VALUE_RM_UDMAP_FLOW_FDQ3_QNUM_VALID; | |
1185 | req.nav_id = tisci_rm->tisci_dev_id; | |
1186 | req.flow_index = flow->udma_rflow_id; | |
1187 | req.rx_dest_qnum = rx_ring_id; | |
1188 | req.rx_fdq0_sz0_qnum = rx_ringfdq_id; | |
1189 | req.rx_fdq1_qnum = rx_ringfdq_id; | |
1190 | req.rx_fdq2_qnum = rx_ringfdq_id; | |
1191 | req.rx_fdq3_qnum = rx_ringfdq_id; | |
1192 | ||
1193 | ret = tisci_rm->tisci_udmap_ops->rx_flow_cfg(tisci_rm->tisci, &req); | |
1194 | if (ret) { | |
1195 | dev_err(dev, "flow%d enable failed: %d\n", flow->udma_rflow_id, | |
1196 | ret); | |
1197 | } | |
1198 | ||
1199 | return ret; | |
1200 | } | |
1201 | EXPORT_SYMBOL_GPL(k3_udma_glue_rx_flow_enable); | |
1202 | ||
1203 | int k3_udma_glue_rx_flow_disable(struct k3_udma_glue_rx_channel *rx_chn, | |
1204 | u32 flow_idx) | |
1205 | { | |
1206 | struct k3_udma_glue_rx_flow *flow = &rx_chn->flows[flow_idx]; | |
1207 | const struct udma_tisci_rm *tisci_rm = rx_chn->common.tisci_rm; | |
1208 | struct device *dev = rx_chn->common.dev; | |
1209 | struct ti_sci_msg_rm_udmap_flow_cfg req; | |
1210 | int ret = 0; | |
1211 | ||
1212 | if (!rx_chn->remote) | |
1213 | return -EINVAL; | |
1214 | ||
1215 | memset(&req, 0, sizeof(req)); | |
1216 | req.valid_params = | |
1217 | TI_SCI_MSG_VALUE_RM_UDMAP_FLOW_DEST_QNUM_VALID | | |
1218 | TI_SCI_MSG_VALUE_RM_UDMAP_FLOW_FDQ0_SZ0_QNUM_VALID | | |
1219 | TI_SCI_MSG_VALUE_RM_UDMAP_FLOW_FDQ1_QNUM_VALID | | |
1220 | TI_SCI_MSG_VALUE_RM_UDMAP_FLOW_FDQ2_QNUM_VALID | | |
1221 | TI_SCI_MSG_VALUE_RM_UDMAP_FLOW_FDQ3_QNUM_VALID; | |
1222 | req.nav_id = tisci_rm->tisci_dev_id; | |
1223 | req.flow_index = flow->udma_rflow_id; | |
1224 | req.rx_dest_qnum = TI_SCI_RESOURCE_NULL; | |
1225 | req.rx_fdq0_sz0_qnum = TI_SCI_RESOURCE_NULL; | |
1226 | req.rx_fdq1_qnum = TI_SCI_RESOURCE_NULL; | |
1227 | req.rx_fdq2_qnum = TI_SCI_RESOURCE_NULL; | |
1228 | req.rx_fdq3_qnum = TI_SCI_RESOURCE_NULL; | |
1229 | ||
1230 | ret = tisci_rm->tisci_udmap_ops->rx_flow_cfg(tisci_rm->tisci, &req); | |
1231 | if (ret) { | |
1232 | dev_err(dev, "flow%d disable failed: %d\n", flow->udma_rflow_id, | |
1233 | ret); | |
1234 | } | |
1235 | ||
1236 | return ret; | |
1237 | } | |
1238 | EXPORT_SYMBOL_GPL(k3_udma_glue_rx_flow_disable); | |
1239 | ||
1240 | int k3_udma_glue_enable_rx_chn(struct k3_udma_glue_rx_channel *rx_chn) | |
1241 | { | |
69973b48 GS |
1242 | int ret; |
1243 | ||
d7024191 GS |
1244 | if (rx_chn->remote) |
1245 | return -EINVAL; | |
1246 | ||
1247 | if (rx_chn->flows_ready < rx_chn->flow_num) | |
1248 | return -EINVAL; | |
1249 | ||
69973b48 GS |
1250 | ret = xudma_navss_psil_pair(rx_chn->common.udmax, |
1251 | rx_chn->common.src_thread, | |
1252 | rx_chn->common.dst_thread); | |
1253 | if (ret) { | |
1254 | dev_err(rx_chn->common.dev, "PSI-L request err %d\n", ret); | |
1255 | return ret; | |
1256 | } | |
1257 | ||
1258 | rx_chn->psil_paired = true; | |
1259 | ||
bc7e5523 | 1260 | xudma_rchanrt_write(rx_chn->udma_rchanx, UDMA_CHAN_RT_CTL_REG, |
52c74d3d | 1261 | UDMA_CHAN_RT_CTL_EN); |
d7024191 | 1262 | |
bc7e5523 | 1263 | xudma_rchanrt_write(rx_chn->udma_rchanx, UDMA_CHAN_RT_PEER_RT_EN_REG, |
d7024191 GS |
1264 | UDMA_PEER_RT_EN_ENABLE); |
1265 | ||
1266 | k3_udma_glue_dump_rx_rt_chn(rx_chn, "rxrt en"); | |
1267 | return 0; | |
1268 | } | |
1269 | EXPORT_SYMBOL_GPL(k3_udma_glue_enable_rx_chn); | |
1270 | ||
1271 | void k3_udma_glue_disable_rx_chn(struct k3_udma_glue_rx_channel *rx_chn) | |
1272 | { | |
1273 | k3_udma_glue_dump_rx_rt_chn(rx_chn, "rxrt dis1"); | |
1274 | ||
1275 | xudma_rchanrt_write(rx_chn->udma_rchanx, | |
bc7e5523 PU |
1276 | UDMA_CHAN_RT_PEER_RT_EN_REG, 0); |
1277 | xudma_rchanrt_write(rx_chn->udma_rchanx, UDMA_CHAN_RT_CTL_REG, 0); | |
d7024191 GS |
1278 | |
1279 | k3_udma_glue_dump_rx_rt_chn(rx_chn, "rxrt dis2"); | |
69973b48 GS |
1280 | |
1281 | if (rx_chn->psil_paired) { | |
1282 | xudma_navss_psil_unpair(rx_chn->common.udmax, | |
1283 | rx_chn->common.src_thread, | |
1284 | rx_chn->common.dst_thread); | |
1285 | rx_chn->psil_paired = false; | |
1286 | } | |
d7024191 GS |
1287 | } |
1288 | EXPORT_SYMBOL_GPL(k3_udma_glue_disable_rx_chn); | |
1289 | ||
1290 | void k3_udma_glue_tdown_rx_chn(struct k3_udma_glue_rx_channel *rx_chn, | |
1291 | bool sync) | |
1292 | { | |
1293 | int i = 0; | |
1294 | u32 val; | |
1295 | ||
1296 | if (rx_chn->remote) | |
1297 | return; | |
1298 | ||
1299 | k3_udma_glue_dump_rx_rt_chn(rx_chn, "rxrt tdown1"); | |
1300 | ||
bc7e5523 | 1301 | xudma_rchanrt_write(rx_chn->udma_rchanx, UDMA_CHAN_RT_PEER_RT_EN_REG, |
d7024191 GS |
1302 | UDMA_PEER_RT_EN_ENABLE | UDMA_PEER_RT_EN_TEARDOWN); |
1303 | ||
bc7e5523 | 1304 | val = xudma_rchanrt_read(rx_chn->udma_rchanx, UDMA_CHAN_RT_CTL_REG); |
d7024191 GS |
1305 | |
1306 | while (sync && (val & UDMA_CHAN_RT_CTL_EN)) { | |
1307 | val = xudma_rchanrt_read(rx_chn->udma_rchanx, | |
bc7e5523 | 1308 | UDMA_CHAN_RT_CTL_REG); |
d7024191 GS |
1309 | udelay(1); |
1310 | if (i > K3_UDMAX_TDOWN_TIMEOUT_US) { | |
1311 | dev_err(rx_chn->common.dev, "RX tdown timeout\n"); | |
1312 | break; | |
1313 | } | |
1314 | i++; | |
1315 | } | |
1316 | ||
1317 | val = xudma_rchanrt_read(rx_chn->udma_rchanx, | |
bc7e5523 | 1318 | UDMA_CHAN_RT_PEER_RT_EN_REG); |
d7024191 GS |
1319 | if (sync && (val & UDMA_PEER_RT_EN_ENABLE)) |
1320 | dev_err(rx_chn->common.dev, "TX tdown peer not stopped\n"); | |
1321 | k3_udma_glue_dump_rx_rt_chn(rx_chn, "rxrt tdown2"); | |
1322 | } | |
1323 | EXPORT_SYMBOL_GPL(k3_udma_glue_tdown_rx_chn); | |
1324 | ||
1325 | void k3_udma_glue_reset_rx_chn(struct k3_udma_glue_rx_channel *rx_chn, | |
1326 | u32 flow_num, void *data, | |
1327 | void (*cleanup)(void *data, dma_addr_t desc_dma), bool skip_fdq) | |
1328 | { | |
1329 | struct k3_udma_glue_rx_flow *flow = &rx_chn->flows[flow_num]; | |
1330 | struct device *dev = rx_chn->common.dev; | |
1331 | dma_addr_t desc_dma; | |
1332 | int occ_rx, i, ret; | |
1333 | ||
1334 | /* reset RXCQ as it is not input for udma - expected to be empty */ | |
1335 | occ_rx = k3_ringacc_ring_get_occ(flow->ringrx); | |
1336 | dev_dbg(dev, "RX reset flow %u occ_rx %u\n", flow_num, occ_rx); | |
d7024191 GS |
1337 | |
1338 | /* Skip RX FDQ in case one FDQ is used for the set of flows */ | |
1339 | if (skip_fdq) | |
5b65781d | 1340 | goto do_reset; |
d7024191 GS |
1341 | |
1342 | /* | |
1343 | * RX FDQ reset need to be special way as it is input for udma and its | |
1344 | * state cached by udma, so: | |
1345 | * 1) save RX FDQ occ | |
1346 | * 2) clean up RX FDQ and call callback .cleanup() for each desc | |
1347 | * 3) reset RX FDQ in a special way | |
1348 | */ | |
1349 | occ_rx = k3_ringacc_ring_get_occ(flow->ringrxfdq); | |
1350 | dev_dbg(dev, "RX reset flow %u occ_rx_fdq %u\n", flow_num, occ_rx); | |
1351 | ||
1352 | for (i = 0; i < occ_rx; i++) { | |
1353 | ret = k3_ringacc_ring_pop(flow->ringrxfdq, &desc_dma); | |
1354 | if (ret) { | |
5b65781d VR |
1355 | if (ret != -ENODATA) |
1356 | dev_err(dev, "RX reset pop %d\n", ret); | |
d7024191 GS |
1357 | break; |
1358 | } | |
1359 | cleanup(data, desc_dma); | |
1360 | } | |
1361 | ||
1362 | k3_ringacc_ring_reset_dma(flow->ringrxfdq, occ_rx); | |
5b65781d VR |
1363 | |
1364 | do_reset: | |
1365 | k3_ringacc_ring_reset(flow->ringrx); | |
d7024191 GS |
1366 | } |
1367 | EXPORT_SYMBOL_GPL(k3_udma_glue_reset_rx_chn); | |
1368 | ||
1369 | int k3_udma_glue_push_rx_chn(struct k3_udma_glue_rx_channel *rx_chn, | |
1370 | u32 flow_num, struct cppi5_host_desc_t *desc_rx, | |
1371 | dma_addr_t desc_dma) | |
1372 | { | |
1373 | struct k3_udma_glue_rx_flow *flow = &rx_chn->flows[flow_num]; | |
1374 | ||
1375 | return k3_ringacc_ring_push(flow->ringrxfdq, &desc_dma); | |
1376 | } | |
1377 | EXPORT_SYMBOL_GPL(k3_udma_glue_push_rx_chn); | |
1378 | ||
1379 | int k3_udma_glue_pop_rx_chn(struct k3_udma_glue_rx_channel *rx_chn, | |
1380 | u32 flow_num, dma_addr_t *desc_dma) | |
1381 | { | |
1382 | struct k3_udma_glue_rx_flow *flow = &rx_chn->flows[flow_num]; | |
1383 | ||
1384 | return k3_ringacc_ring_pop(flow->ringrx, desc_dma); | |
1385 | } | |
1386 | EXPORT_SYMBOL_GPL(k3_udma_glue_pop_rx_chn); | |
1387 | ||
1388 | int k3_udma_glue_rx_get_irq(struct k3_udma_glue_rx_channel *rx_chn, | |
1389 | u32 flow_num) | |
1390 | { | |
1391 | struct k3_udma_glue_rx_flow *flow; | |
1392 | ||
1393 | flow = &rx_chn->flows[flow_num]; | |
1394 | ||
5b65781d VR |
1395 | if (xudma_is_pktdma(rx_chn->common.udmax)) { |
1396 | flow->virq = xudma_pktdma_rflow_get_irq(rx_chn->common.udmax, | |
1397 | flow->udma_rflow_id); | |
1398 | } else { | |
1399 | flow->virq = k3_ringacc_get_ring_irq_num(flow->ringrx); | |
1400 | } | |
d7024191 GS |
1401 | |
1402 | return flow->virq; | |
1403 | } | |
1404 | EXPORT_SYMBOL_GPL(k3_udma_glue_rx_get_irq); | |
426506a7 PU |
1405 | |
1406 | struct device * | |
1407 | k3_udma_glue_rx_get_dma_device(struct k3_udma_glue_rx_channel *rx_chn) | |
1408 | { | |
5b65781d VR |
1409 | if (xudma_is_pktdma(rx_chn->common.udmax) && |
1410 | (rx_chn->common.atype_asel == 14 || rx_chn->common.atype_asel == 15)) | |
1411 | return &rx_chn->common.chan_dev; | |
1412 | ||
426506a7 PU |
1413 | return xudma_get_device(rx_chn->common.udmax); |
1414 | } | |
1415 | EXPORT_SYMBOL_GPL(k3_udma_glue_rx_get_dma_device); | |
5b65781d VR |
1416 | |
1417 | void k3_udma_glue_rx_dma_to_cppi5_addr(struct k3_udma_glue_rx_channel *rx_chn, | |
1418 | dma_addr_t *addr) | |
1419 | { | |
1420 | if (!xudma_is_pktdma(rx_chn->common.udmax) || | |
1421 | !rx_chn->common.atype_asel) | |
1422 | return; | |
1423 | ||
1424 | *addr |= (u64)rx_chn->common.atype_asel << K3_ADDRESS_ASEL_SHIFT; | |
1425 | } | |
1426 | EXPORT_SYMBOL_GPL(k3_udma_glue_rx_dma_to_cppi5_addr); | |
1427 | ||
1428 | void k3_udma_glue_rx_cppi5_to_dma_addr(struct k3_udma_glue_rx_channel *rx_chn, | |
1429 | dma_addr_t *addr) | |
1430 | { | |
1431 | if (!xudma_is_pktdma(rx_chn->common.udmax) || | |
1432 | !rx_chn->common.atype_asel) | |
1433 | return; | |
1434 | ||
1435 | *addr &= (u64)GENMASK(K3_ADDRESS_ASEL_SHIFT - 1, 0); | |
1436 | } | |
1437 | EXPORT_SYMBOL_GPL(k3_udma_glue_rx_cppi5_to_dma_addr); | |
1438 | ||
1439 | static int __init k3_udma_glue_class_init(void) | |
1440 | { | |
1441 | return class_register(&k3_udma_glue_devclass); | |
1442 | } | |
56b0a668 KH |
1443 | |
1444 | module_init(k3_udma_glue_class_init); | |
1445 | MODULE_LICENSE("GPL v2"); |