1 // SPDX-License-Identifier: BSD-3-Clause-Clear
2 /*
3 * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved.
4 * Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved.
5 */
6 #include <linux/dma-mapping.h>
7 #include "hal_tx.h"
8 #include "debug.h"
9 #include "hal_desc.h"
10 #include "hif.h"
11
12 static const struct hal_srng_config hw_srng_config_template[] = {
13 /* TODO: max_rings can populated by querying HW capabilities */
14 { /* REO_DST */
15 .start_ring_id = HAL_SRNG_RING_ID_REO2SW1,
16 .max_rings = 4,
17 .entry_size = sizeof(struct hal_reo_dest_ring) >> 2,
18 .lmac_ring = false,
19 .ring_dir = HAL_SRNG_DIR_DST,
20 .max_size = HAL_REO_REO2SW1_RING_BASE_MSB_RING_SIZE,
21 },
22 { /* REO_EXCEPTION */
23 /* Designating REO2TCL ring as exception ring. This ring is
24 * similar to other REO2SW rings though it is named as REO2TCL.
25 * Any of theREO2SW rings can be used as exception ring.
26 */
27 .start_ring_id = HAL_SRNG_RING_ID_REO2TCL,
28 .max_rings = 1,
29 .entry_size = sizeof(struct hal_reo_dest_ring) >> 2,
30 .lmac_ring = false,
31 .ring_dir = HAL_SRNG_DIR_DST,
32 .max_size = HAL_REO_REO2TCL_RING_BASE_MSB_RING_SIZE,
33 },
34 { /* REO_REINJECT */
35 .start_ring_id = HAL_SRNG_RING_ID_SW2REO,
36 .max_rings = 1,
37 .entry_size = sizeof(struct hal_reo_entrance_ring) >> 2,
38 .lmac_ring = false,
39 .ring_dir = HAL_SRNG_DIR_SRC,
40 .max_size = HAL_REO_SW2REO_RING_BASE_MSB_RING_SIZE,
41 },
42 { /* REO_CMD */
43 .start_ring_id = HAL_SRNG_RING_ID_REO_CMD,
44 .max_rings = 1,
45 .entry_size = (sizeof(struct hal_tlv_hdr) +
46 sizeof(struct hal_reo_get_queue_stats)) >> 2,
47 .lmac_ring = false,
48 .ring_dir = HAL_SRNG_DIR_SRC,
49 .max_size = HAL_REO_CMD_RING_BASE_MSB_RING_SIZE,
50 },
51 { /* REO_STATUS */
52 .start_ring_id = HAL_SRNG_RING_ID_REO_STATUS,
53 .max_rings = 1,
54 .entry_size = (sizeof(struct hal_tlv_hdr) +
55 sizeof(struct hal_reo_get_queue_stats_status)) >> 2,
56 .lmac_ring = false,
57 .ring_dir = HAL_SRNG_DIR_DST,
58 .max_size = HAL_REO_STATUS_RING_BASE_MSB_RING_SIZE,
59 },
60 { /* TCL_DATA */
61 .start_ring_id = HAL_SRNG_RING_ID_SW2TCL1,
62 .max_rings = 3,
63 .entry_size = (sizeof(struct hal_tlv_hdr) +
64 sizeof(struct hal_tcl_data_cmd)) >> 2,
65 .lmac_ring = false,
66 .ring_dir = HAL_SRNG_DIR_SRC,
67 .max_size = HAL_SW2TCL1_RING_BASE_MSB_RING_SIZE,
68 },
69 { /* TCL_CMD */
70 .start_ring_id = HAL_SRNG_RING_ID_SW2TCL_CMD,
71 .max_rings = 1,
72 .entry_size = (sizeof(struct hal_tlv_hdr) +
73 sizeof(struct hal_tcl_gse_cmd)) >> 2,
74 .lmac_ring = false,
75 .ring_dir = HAL_SRNG_DIR_SRC,
76 .max_size = HAL_SW2TCL1_CMD_RING_BASE_MSB_RING_SIZE,
77 },
78 { /* TCL_STATUS */
79 .start_ring_id = HAL_SRNG_RING_ID_TCL_STATUS,
80 .max_rings = 1,
81 .entry_size = (sizeof(struct hal_tlv_hdr) +
82 sizeof(struct hal_tcl_status_ring)) >> 2,
83 .lmac_ring = false,
84 .ring_dir = HAL_SRNG_DIR_DST,
85 .max_size = HAL_TCL_STATUS_RING_BASE_MSB_RING_SIZE,
86 },
87 { /* CE_SRC */
88 .start_ring_id = HAL_SRNG_RING_ID_CE0_SRC,
89 .max_rings = 12,
90 .entry_size = sizeof(struct hal_ce_srng_src_desc) >> 2,
91 .lmac_ring = false,
92 .ring_dir = HAL_SRNG_DIR_SRC,
93 .max_size = HAL_CE_SRC_RING_BASE_MSB_RING_SIZE,
94 },
95 { /* CE_DST */
96 .start_ring_id = HAL_SRNG_RING_ID_CE0_DST,
97 .max_rings = 12,
98 .entry_size = sizeof(struct hal_ce_srng_dest_desc) >> 2,
99 .lmac_ring = false,
100 .ring_dir = HAL_SRNG_DIR_SRC,
101 .max_size = HAL_CE_DST_RING_BASE_MSB_RING_SIZE,
102 },
103 { /* CE_DST_STATUS */
104 .start_ring_id = HAL_SRNG_RING_ID_CE0_DST_STATUS,
105 .max_rings = 12,
106 .entry_size = sizeof(struct hal_ce_srng_dst_status_desc) >> 2,
107 .lmac_ring = false,
108 .ring_dir = HAL_SRNG_DIR_DST,
109 .max_size = HAL_CE_DST_STATUS_RING_BASE_MSB_RING_SIZE,
110 },
111 { /* WBM_IDLE_LINK */
112 .start_ring_id = HAL_SRNG_RING_ID_WBM_IDLE_LINK,
113 .max_rings = 1,
114 .entry_size = sizeof(struct hal_wbm_link_desc) >> 2,
115 .lmac_ring = false,
116 .ring_dir = HAL_SRNG_DIR_SRC,
117 .max_size = HAL_WBM_IDLE_LINK_RING_BASE_MSB_RING_SIZE,
118 },
119 { /* SW2WBM_RELEASE */
120 .start_ring_id = HAL_SRNG_RING_ID_WBM_SW_RELEASE,
121 .max_rings = 1,
122 .entry_size = sizeof(struct hal_wbm_release_ring) >> 2,
123 .lmac_ring = false,
124 .ring_dir = HAL_SRNG_DIR_SRC,
125 .max_size = HAL_SW2WBM_RELEASE_RING_BASE_MSB_RING_SIZE,
126 },
127 { /* WBM2SW_RELEASE */
128 .start_ring_id = HAL_SRNG_RING_ID_WBM2SW0_RELEASE,
129 .max_rings = 5,
130 .entry_size = sizeof(struct hal_wbm_release_ring) >> 2,
131 .lmac_ring = false,
132 .ring_dir = HAL_SRNG_DIR_DST,
133 .max_size = HAL_WBM2SW_RELEASE_RING_BASE_MSB_RING_SIZE,
134 },
135 { /* RXDMA_BUF */
136 .start_ring_id = HAL_SRNG_RING_ID_WMAC1_SW2RXDMA0_BUF,
137 .max_rings = 2,
138 .entry_size = sizeof(struct hal_wbm_buffer_ring) >> 2,
139 .lmac_ring = true,
140 .ring_dir = HAL_SRNG_DIR_SRC,
141 .max_size = HAL_RXDMA_RING_MAX_SIZE,
142 },
143 { /* RXDMA_DST */
144 .start_ring_id = HAL_SRNG_RING_ID_WMAC1_RXDMA2SW0,
145 .max_rings = 1,
146 .entry_size = sizeof(struct hal_reo_entrance_ring) >> 2,
147 .lmac_ring = true,
148 .ring_dir = HAL_SRNG_DIR_DST,
149 .max_size = HAL_RXDMA_RING_MAX_SIZE,
150 },
151 { /* RXDMA_MONITOR_BUF */
152 .start_ring_id = HAL_SRNG_RING_ID_WMAC1_SW2RXDMA2_BUF,
153 .max_rings = 1,
154 .entry_size = sizeof(struct hal_wbm_buffer_ring) >> 2,
155 .lmac_ring = true,
156 .ring_dir = HAL_SRNG_DIR_SRC,
157 .max_size = HAL_RXDMA_RING_MAX_SIZE,
158 },
159 { /* RXDMA_MONITOR_STATUS */
160 .start_ring_id = HAL_SRNG_RING_ID_WMAC1_SW2RXDMA1_STATBUF,
161 .max_rings = 1,
162 .entry_size = sizeof(struct hal_wbm_buffer_ring) >> 2,
163 .lmac_ring = true,
164 .ring_dir = HAL_SRNG_DIR_SRC,
165 .max_size = HAL_RXDMA_RING_MAX_SIZE,
166 },
167 { /* RXDMA_MONITOR_DST */
168 .start_ring_id = HAL_SRNG_RING_ID_WMAC1_RXDMA2SW1,
169 .max_rings = 1,
170 .entry_size = sizeof(struct hal_reo_entrance_ring) >> 2,
171 .lmac_ring = true,
172 .ring_dir = HAL_SRNG_DIR_DST,
173 .max_size = HAL_RXDMA_RING_MAX_SIZE,
174 },
175 { /* RXDMA_MONITOR_DESC */
176 .start_ring_id = HAL_SRNG_RING_ID_WMAC1_SW2RXDMA1_DESC,
177 .max_rings = 1,
178 .entry_size = sizeof(struct hal_wbm_buffer_ring) >> 2,
179 .lmac_ring = true,
180 .ring_dir = HAL_SRNG_DIR_SRC,
181 .max_size = HAL_RXDMA_RING_MAX_SIZE,
182 },
183 { /* RXDMA DIR BUF */
184 .start_ring_id = HAL_SRNG_RING_ID_RXDMA_DIR_BUF,
185 .max_rings = 1,
186 .entry_size = 8 >> 2, /* TODO: Define the struct */
187 .lmac_ring = true,
188 .ring_dir = HAL_SRNG_DIR_SRC,
189 .max_size = HAL_RXDMA_RING_MAX_SIZE,
190 },
191 };
192
ath11k_hal_alloc_cont_rdp(struct ath11k_base * ab)193 static int ath11k_hal_alloc_cont_rdp(struct ath11k_base *ab)
194 {
195 struct ath11k_hal *hal = &ab->hal;
196 size_t size;
197
198 size = sizeof(u32) * HAL_SRNG_RING_ID_MAX;
199 hal->rdp.vaddr = dma_alloc_coherent(ab->dev, size, &hal->rdp.paddr,
200 GFP_KERNEL);
201 if (!hal->rdp.vaddr)
202 return -ENOMEM;
203
204 return 0;
205 }
206
ath11k_hal_free_cont_rdp(struct ath11k_base * ab)207 static void ath11k_hal_free_cont_rdp(struct ath11k_base *ab)
208 {
209 struct ath11k_hal *hal = &ab->hal;
210 size_t size;
211
212 if (!hal->rdp.vaddr)
213 return;
214
215 size = sizeof(u32) * HAL_SRNG_RING_ID_MAX;
216 dma_free_coherent(ab->dev, size,
217 hal->rdp.vaddr, hal->rdp.paddr);
218 hal->rdp.vaddr = NULL;
219 }
220
ath11k_hal_alloc_cont_wrp(struct ath11k_base * ab)221 static int ath11k_hal_alloc_cont_wrp(struct ath11k_base *ab)
222 {
223 struct ath11k_hal *hal = &ab->hal;
224 size_t size;
225
226 size = sizeof(u32) * HAL_SRNG_NUM_LMAC_RINGS;
227 hal->wrp.vaddr = dma_alloc_coherent(ab->dev, size, &hal->wrp.paddr,
228 GFP_KERNEL);
229 if (!hal->wrp.vaddr)
230 return -ENOMEM;
231
232 return 0;
233 }
234
ath11k_hal_free_cont_wrp(struct ath11k_base * ab)235 static void ath11k_hal_free_cont_wrp(struct ath11k_base *ab)
236 {
237 struct ath11k_hal *hal = &ab->hal;
238 size_t size;
239
240 if (!hal->wrp.vaddr)
241 return;
242
243 size = sizeof(u32) * HAL_SRNG_NUM_LMAC_RINGS;
244 dma_free_coherent(ab->dev, size,
245 hal->wrp.vaddr, hal->wrp.paddr);
246 hal->wrp.vaddr = NULL;
247 }
248
ath11k_hal_ce_dst_setup(struct ath11k_base * ab,struct hal_srng * srng,int ring_num)249 static void ath11k_hal_ce_dst_setup(struct ath11k_base *ab,
250 struct hal_srng *srng, int ring_num)
251 {
252 struct hal_srng_config *srng_config = &ab->hal.srng_config[HAL_CE_DST];
253 u32 addr;
254 u32 val;
255
256 addr = HAL_CE_DST_RING_CTRL +
257 srng_config->reg_start[HAL_SRNG_REG_GRP_R0] +
258 ring_num * srng_config->reg_size[HAL_SRNG_REG_GRP_R0];
259
260 val = ath11k_hif_read32(ab, addr);
261 val &= ~HAL_CE_DST_R0_DEST_CTRL_MAX_LEN;
262 val |= FIELD_PREP(HAL_CE_DST_R0_DEST_CTRL_MAX_LEN,
263 srng->u.dst_ring.max_buffer_length);
264 ath11k_hif_write32(ab, addr, val);
265 }
266
ath11k_hal_srng_dst_hw_init(struct ath11k_base * ab,struct hal_srng * srng)267 static void ath11k_hal_srng_dst_hw_init(struct ath11k_base *ab,
268 struct hal_srng *srng)
269 {
270 struct ath11k_hal *hal = &ab->hal;
271 u32 val;
272 u64 hp_addr;
273 u32 reg_base;
274
275 reg_base = srng->hwreg_base[HAL_SRNG_REG_GRP_R0];
276
277 if (srng->flags & HAL_SRNG_FLAGS_MSI_INTR) {
278 ath11k_hif_write32(ab, reg_base +
279 HAL_REO1_RING_MSI1_BASE_LSB_OFFSET(ab),
280 srng->msi_addr);
281
282 val = FIELD_PREP(HAL_REO1_RING_MSI1_BASE_MSB_ADDR,
283 ((u64)srng->msi_addr >>
284 HAL_ADDR_MSB_REG_SHIFT)) |
285 HAL_REO1_RING_MSI1_BASE_MSB_MSI1_ENABLE;
286 ath11k_hif_write32(ab, reg_base +
287 HAL_REO1_RING_MSI1_BASE_MSB_OFFSET(ab), val);
288
289 ath11k_hif_write32(ab,
290 reg_base + HAL_REO1_RING_MSI1_DATA_OFFSET(ab),
291 srng->msi_data);
292 }
293
294 ath11k_hif_write32(ab, reg_base, srng->ring_base_paddr);
295
296 val = FIELD_PREP(HAL_REO1_RING_BASE_MSB_RING_BASE_ADDR_MSB,
297 ((u64)srng->ring_base_paddr >>
298 HAL_ADDR_MSB_REG_SHIFT)) |
299 FIELD_PREP(HAL_REO1_RING_BASE_MSB_RING_SIZE,
300 (srng->entry_size * srng->num_entries));
301 ath11k_hif_write32(ab, reg_base + HAL_REO1_RING_BASE_MSB_OFFSET(ab), val);
302
303 val = FIELD_PREP(HAL_REO1_RING_ID_RING_ID, srng->ring_id) |
304 FIELD_PREP(HAL_REO1_RING_ID_ENTRY_SIZE, srng->entry_size);
305 ath11k_hif_write32(ab, reg_base + HAL_REO1_RING_ID_OFFSET(ab), val);
306
307 /* interrupt setup */
308 val = FIELD_PREP(HAL_REO1_RING_PRDR_INT_SETUP_INTR_TMR_THOLD,
309 (srng->intr_timer_thres_us >> 3));
310
311 val |= FIELD_PREP(HAL_REO1_RING_PRDR_INT_SETUP_BATCH_COUNTER_THOLD,
312 (srng->intr_batch_cntr_thres_entries *
313 srng->entry_size));
314
315 ath11k_hif_write32(ab,
316 reg_base + HAL_REO1_RING_PRODUCER_INT_SETUP_OFFSET(ab),
317 val);
318
319 hp_addr = hal->rdp.paddr +
320 ((unsigned long)srng->u.dst_ring.hp_addr -
321 (unsigned long)hal->rdp.vaddr);
322 ath11k_hif_write32(ab, reg_base + HAL_REO1_RING_HP_ADDR_LSB_OFFSET(ab),
323 hp_addr & HAL_ADDR_LSB_REG_MASK);
324 ath11k_hif_write32(ab, reg_base + HAL_REO1_RING_HP_ADDR_MSB_OFFSET(ab),
325 hp_addr >> HAL_ADDR_MSB_REG_SHIFT);
326
327 /* Initialize head and tail pointers to indicate ring is empty */
328 reg_base = srng->hwreg_base[HAL_SRNG_REG_GRP_R2];
329 ath11k_hif_write32(ab, reg_base, 0);
330 ath11k_hif_write32(ab, reg_base + HAL_REO1_RING_TP_OFFSET(ab), 0);
331 *srng->u.dst_ring.hp_addr = 0;
332
333 reg_base = srng->hwreg_base[HAL_SRNG_REG_GRP_R0];
334 val = 0;
335 if (srng->flags & HAL_SRNG_FLAGS_DATA_TLV_SWAP)
336 val |= HAL_REO1_RING_MISC_DATA_TLV_SWAP;
337 if (srng->flags & HAL_SRNG_FLAGS_RING_PTR_SWAP)
338 val |= HAL_REO1_RING_MISC_HOST_FW_SWAP;
339 if (srng->flags & HAL_SRNG_FLAGS_MSI_SWAP)
340 val |= HAL_REO1_RING_MISC_MSI_SWAP;
341 val |= HAL_REO1_RING_MISC_SRNG_ENABLE;
342
343 ath11k_hif_write32(ab, reg_base + HAL_REO1_RING_MISC_OFFSET(ab), val);
344 }
345
ath11k_hal_srng_src_hw_init(struct ath11k_base * ab,struct hal_srng * srng)346 static void ath11k_hal_srng_src_hw_init(struct ath11k_base *ab,
347 struct hal_srng *srng)
348 {
349 struct ath11k_hal *hal = &ab->hal;
350 u32 val;
351 u64 tp_addr;
352 u32 reg_base;
353
354 reg_base = srng->hwreg_base[HAL_SRNG_REG_GRP_R0];
355
356 if (srng->flags & HAL_SRNG_FLAGS_MSI_INTR) {
357 ath11k_hif_write32(ab, reg_base +
358 HAL_TCL1_RING_MSI1_BASE_LSB_OFFSET(ab),
359 srng->msi_addr);
360
361 val = FIELD_PREP(HAL_TCL1_RING_MSI1_BASE_MSB_ADDR,
362 ((u64)srng->msi_addr >>
363 HAL_ADDR_MSB_REG_SHIFT)) |
364 HAL_TCL1_RING_MSI1_BASE_MSB_MSI1_ENABLE;
365 ath11k_hif_write32(ab, reg_base +
366 HAL_TCL1_RING_MSI1_BASE_MSB_OFFSET(ab),
367 val);
368
369 ath11k_hif_write32(ab, reg_base +
370 HAL_TCL1_RING_MSI1_DATA_OFFSET(ab),
371 srng->msi_data);
372 }
373
374 ath11k_hif_write32(ab, reg_base, srng->ring_base_paddr);
375
376 val = FIELD_PREP(HAL_TCL1_RING_BASE_MSB_RING_BASE_ADDR_MSB,
377 ((u64)srng->ring_base_paddr >>
378 HAL_ADDR_MSB_REG_SHIFT)) |
379 FIELD_PREP(HAL_TCL1_RING_BASE_MSB_RING_SIZE,
380 (srng->entry_size * srng->num_entries));
381 ath11k_hif_write32(ab, reg_base + HAL_TCL1_RING_BASE_MSB_OFFSET(ab), val);
382
383 val = FIELD_PREP(HAL_REO1_RING_ID_ENTRY_SIZE, srng->entry_size);
384 ath11k_hif_write32(ab, reg_base + HAL_TCL1_RING_ID_OFFSET(ab), val);
385
386 if (srng->ring_id == HAL_SRNG_RING_ID_WBM_IDLE_LINK) {
387 ath11k_hif_write32(ab, reg_base, (u32)srng->ring_base_paddr);
388 val = FIELD_PREP(HAL_TCL1_RING_BASE_MSB_RING_BASE_ADDR_MSB,
389 ((u64)srng->ring_base_paddr >>
390 HAL_ADDR_MSB_REG_SHIFT)) |
391 FIELD_PREP(HAL_TCL1_RING_BASE_MSB_RING_SIZE,
392 (srng->entry_size * srng->num_entries));
393 ath11k_hif_write32(ab, reg_base + HAL_TCL1_RING_BASE_MSB_OFFSET(ab), val);
394 }
395
396 /* interrupt setup */
397 /* NOTE: IPQ8074 v2 requires the interrupt timer threshold in the
398 * unit of 8 usecs instead of 1 usec (as required by v1).
399 */
400 val = FIELD_PREP(HAL_TCL1_RING_CONSR_INT_SETUP_IX0_INTR_TMR_THOLD,
401 srng->intr_timer_thres_us);
402
403 val |= FIELD_PREP(HAL_TCL1_RING_CONSR_INT_SETUP_IX0_BATCH_COUNTER_THOLD,
404 (srng->intr_batch_cntr_thres_entries *
405 srng->entry_size));
406
407 ath11k_hif_write32(ab,
408 reg_base + HAL_TCL1_RING_CONSR_INT_SETUP_IX0_OFFSET(ab),
409 val);
410
411 val = 0;
412 if (srng->flags & HAL_SRNG_FLAGS_LOW_THRESH_INTR_EN) {
413 val |= FIELD_PREP(HAL_TCL1_RING_CONSR_INT_SETUP_IX1_LOW_THOLD,
414 srng->u.src_ring.low_threshold);
415 }
416 ath11k_hif_write32(ab,
417 reg_base + HAL_TCL1_RING_CONSR_INT_SETUP_IX1_OFFSET(ab),
418 val);
419
420 if (srng->ring_id != HAL_SRNG_RING_ID_WBM_IDLE_LINK) {
421 tp_addr = hal->rdp.paddr +
422 ((unsigned long)srng->u.src_ring.tp_addr -
423 (unsigned long)hal->rdp.vaddr);
424 ath11k_hif_write32(ab,
425 reg_base + HAL_TCL1_RING_TP_ADDR_LSB_OFFSET(ab),
426 tp_addr & HAL_ADDR_LSB_REG_MASK);
427 ath11k_hif_write32(ab,
428 reg_base + HAL_TCL1_RING_TP_ADDR_MSB_OFFSET(ab),
429 tp_addr >> HAL_ADDR_MSB_REG_SHIFT);
430 }
431
432 /* Initialize head and tail pointers to indicate ring is empty */
433 reg_base = srng->hwreg_base[HAL_SRNG_REG_GRP_R2];
434 ath11k_hif_write32(ab, reg_base, 0);
435 ath11k_hif_write32(ab, reg_base + HAL_TCL1_RING_TP_OFFSET, 0);
436 *srng->u.src_ring.tp_addr = 0;
437
438 reg_base = srng->hwreg_base[HAL_SRNG_REG_GRP_R0];
439 val = 0;
440 if (srng->flags & HAL_SRNG_FLAGS_DATA_TLV_SWAP)
441 val |= HAL_TCL1_RING_MISC_DATA_TLV_SWAP;
442 if (srng->flags & HAL_SRNG_FLAGS_RING_PTR_SWAP)
443 val |= HAL_TCL1_RING_MISC_HOST_FW_SWAP;
444 if (srng->flags & HAL_SRNG_FLAGS_MSI_SWAP)
445 val |= HAL_TCL1_RING_MISC_MSI_SWAP;
446
447 /* Loop count is not used for SRC rings */
448 val |= HAL_TCL1_RING_MISC_MSI_LOOPCNT_DISABLE;
449
450 val |= HAL_TCL1_RING_MISC_SRNG_ENABLE;
451
452 ath11k_hif_write32(ab, reg_base + HAL_TCL1_RING_MISC_OFFSET(ab), val);
453 }
454
ath11k_hal_srng_hw_init(struct ath11k_base * ab,struct hal_srng * srng)455 static void ath11k_hal_srng_hw_init(struct ath11k_base *ab,
456 struct hal_srng *srng)
457 {
458 if (srng->ring_dir == HAL_SRNG_DIR_SRC)
459 ath11k_hal_srng_src_hw_init(ab, srng);
460 else
461 ath11k_hal_srng_dst_hw_init(ab, srng);
462 }
463
ath11k_hal_srng_get_ring_id(struct ath11k_base * ab,enum hal_ring_type type,int ring_num,int mac_id)464 static int ath11k_hal_srng_get_ring_id(struct ath11k_base *ab,
465 enum hal_ring_type type,
466 int ring_num, int mac_id)
467 {
468 struct hal_srng_config *srng_config = &ab->hal.srng_config[type];
469 int ring_id;
470
471 if (ring_num >= srng_config->max_rings) {
472 ath11k_warn(ab, "invalid ring number :%d\n", ring_num);
473 return -EINVAL;
474 }
475
476 ring_id = srng_config->start_ring_id + ring_num;
477 if (srng_config->lmac_ring)
478 ring_id += mac_id * HAL_SRNG_RINGS_PER_LMAC;
479
480 if (WARN_ON(ring_id >= HAL_SRNG_RING_ID_MAX))
481 return -EINVAL;
482
483 return ring_id;
484 }
485
ath11k_hal_srng_get_entrysize(struct ath11k_base * ab,u32 ring_type)486 int ath11k_hal_srng_get_entrysize(struct ath11k_base *ab, u32 ring_type)
487 {
488 struct hal_srng_config *srng_config;
489
490 if (WARN_ON(ring_type >= HAL_MAX_RING_TYPES))
491 return -EINVAL;
492
493 srng_config = &ab->hal.srng_config[ring_type];
494
495 return (srng_config->entry_size << 2);
496 }
497
ath11k_hal_srng_get_max_entries(struct ath11k_base * ab,u32 ring_type)498 int ath11k_hal_srng_get_max_entries(struct ath11k_base *ab, u32 ring_type)
499 {
500 struct hal_srng_config *srng_config;
501
502 if (WARN_ON(ring_type >= HAL_MAX_RING_TYPES))
503 return -EINVAL;
504
505 srng_config = &ab->hal.srng_config[ring_type];
506
507 return (srng_config->max_size / srng_config->entry_size);
508 }
509
ath11k_hal_srng_get_params(struct ath11k_base * ab,struct hal_srng * srng,struct hal_srng_params * params)510 void ath11k_hal_srng_get_params(struct ath11k_base *ab, struct hal_srng *srng,
511 struct hal_srng_params *params)
512 {
513 params->ring_base_paddr = srng->ring_base_paddr;
514 params->ring_base_vaddr = srng->ring_base_vaddr;
515 params->num_entries = srng->num_entries;
516 params->intr_timer_thres_us = srng->intr_timer_thres_us;
517 params->intr_batch_cntr_thres_entries =
518 srng->intr_batch_cntr_thres_entries;
519 params->low_threshold = srng->u.src_ring.low_threshold;
520 params->msi_addr = srng->msi_addr;
521 params->msi_data = srng->msi_data;
522 params->flags = srng->flags;
523 }
524
ath11k_hal_srng_get_hp_addr(struct ath11k_base * ab,struct hal_srng * srng)525 dma_addr_t ath11k_hal_srng_get_hp_addr(struct ath11k_base *ab,
526 struct hal_srng *srng)
527 {
528 if (!(srng->flags & HAL_SRNG_FLAGS_LMAC_RING))
529 return 0;
530
531 if (srng->ring_dir == HAL_SRNG_DIR_SRC)
532 return ab->hal.wrp.paddr +
533 ((unsigned long)srng->u.src_ring.hp_addr -
534 (unsigned long)ab->hal.wrp.vaddr);
535 else
536 return ab->hal.rdp.paddr +
537 ((unsigned long)srng->u.dst_ring.hp_addr -
538 (unsigned long)ab->hal.rdp.vaddr);
539 }
540
ath11k_hal_srng_get_tp_addr(struct ath11k_base * ab,struct hal_srng * srng)541 dma_addr_t ath11k_hal_srng_get_tp_addr(struct ath11k_base *ab,
542 struct hal_srng *srng)
543 {
544 if (!(srng->flags & HAL_SRNG_FLAGS_LMAC_RING))
545 return 0;
546
547 if (srng->ring_dir == HAL_SRNG_DIR_SRC)
548 return ab->hal.rdp.paddr +
549 ((unsigned long)srng->u.src_ring.tp_addr -
550 (unsigned long)ab->hal.rdp.vaddr);
551 else
552 return ab->hal.wrp.paddr +
553 ((unsigned long)srng->u.dst_ring.tp_addr -
554 (unsigned long)ab->hal.wrp.vaddr);
555 }
556
ath11k_hal_ce_get_desc_size(enum hal_ce_desc type)557 u32 ath11k_hal_ce_get_desc_size(enum hal_ce_desc type)
558 {
559 switch (type) {
560 case HAL_CE_DESC_SRC:
561 return sizeof(struct hal_ce_srng_src_desc);
562 case HAL_CE_DESC_DST:
563 return sizeof(struct hal_ce_srng_dest_desc);
564 case HAL_CE_DESC_DST_STATUS:
565 return sizeof(struct hal_ce_srng_dst_status_desc);
566 }
567
568 return 0;
569 }
570
ath11k_hal_ce_src_set_desc(void * buf,dma_addr_t paddr,u32 len,u32 id,u8 byte_swap_data)571 void ath11k_hal_ce_src_set_desc(void *buf, dma_addr_t paddr, u32 len, u32 id,
572 u8 byte_swap_data)
573 {
574 struct hal_ce_srng_src_desc *desc = (struct hal_ce_srng_src_desc *)buf;
575
576 desc->buffer_addr_low = paddr & HAL_ADDR_LSB_REG_MASK;
577 desc->buffer_addr_info =
578 FIELD_PREP(HAL_CE_SRC_DESC_ADDR_INFO_ADDR_HI,
579 ((u64)paddr >> HAL_ADDR_MSB_REG_SHIFT)) |
580 FIELD_PREP(HAL_CE_SRC_DESC_ADDR_INFO_BYTE_SWAP,
581 byte_swap_data) |
582 FIELD_PREP(HAL_CE_SRC_DESC_ADDR_INFO_GATHER, 0) |
583 FIELD_PREP(HAL_CE_SRC_DESC_ADDR_INFO_LEN, len);
584 desc->meta_info = FIELD_PREP(HAL_CE_SRC_DESC_META_INFO_DATA, id);
585 }
586
ath11k_hal_ce_dst_set_desc(void * buf,dma_addr_t paddr)587 void ath11k_hal_ce_dst_set_desc(void *buf, dma_addr_t paddr)
588 {
589 struct hal_ce_srng_dest_desc *desc =
590 (struct hal_ce_srng_dest_desc *)buf;
591
592 desc->buffer_addr_low = paddr & HAL_ADDR_LSB_REG_MASK;
593 desc->buffer_addr_info =
594 FIELD_PREP(HAL_CE_DEST_DESC_ADDR_INFO_ADDR_HI,
595 ((u64)paddr >> HAL_ADDR_MSB_REG_SHIFT));
596 }
597
ath11k_hal_ce_dst_status_get_length(void * buf)598 u32 ath11k_hal_ce_dst_status_get_length(void *buf)
599 {
600 struct hal_ce_srng_dst_status_desc *desc =
601 (struct hal_ce_srng_dst_status_desc *)buf;
602 u32 len;
603
604 len = FIELD_GET(HAL_CE_DST_STATUS_DESC_FLAGS_LEN, desc->flags);
605 desc->flags &= ~HAL_CE_DST_STATUS_DESC_FLAGS_LEN;
606
607 return len;
608 }
609
ath11k_hal_set_link_desc_addr(struct hal_wbm_link_desc * desc,u32 cookie,dma_addr_t paddr)610 void ath11k_hal_set_link_desc_addr(struct hal_wbm_link_desc *desc, u32 cookie,
611 dma_addr_t paddr)
612 {
613 desc->buf_addr_info.info0 = FIELD_PREP(BUFFER_ADDR_INFO0_ADDR,
614 (paddr & HAL_ADDR_LSB_REG_MASK));
615 desc->buf_addr_info.info1 = FIELD_PREP(BUFFER_ADDR_INFO1_ADDR,
616 ((u64)paddr >> HAL_ADDR_MSB_REG_SHIFT)) |
617 FIELD_PREP(BUFFER_ADDR_INFO1_RET_BUF_MGR, 1) |
618 FIELD_PREP(BUFFER_ADDR_INFO1_SW_COOKIE, cookie);
619 }
620
ath11k_hal_srng_dst_peek(struct ath11k_base * ab,struct hal_srng * srng)621 u32 *ath11k_hal_srng_dst_peek(struct ath11k_base *ab, struct hal_srng *srng)
622 {
623 lockdep_assert_held(&srng->lock);
624
625 if (srng->u.dst_ring.tp != srng->u.dst_ring.cached_hp)
626 return (srng->ring_base_vaddr + srng->u.dst_ring.tp);
627
628 return NULL;
629 }
630
ath11k_hal_srng_prefetch_desc(struct ath11k_base * ab,struct hal_srng * srng)631 static void ath11k_hal_srng_prefetch_desc(struct ath11k_base *ab,
632 struct hal_srng *srng)
633 {
634 u32 *desc;
635
636 /* prefetch only if desc is available */
637 desc = ath11k_hal_srng_dst_peek(ab, srng);
638 if (likely(desc)) {
639 dma_sync_single_for_cpu(ab->dev, virt_to_phys(desc),
640 (srng->entry_size * sizeof(u32)),
641 DMA_FROM_DEVICE);
642 prefetch(desc);
643 }
644 }
645
ath11k_hal_srng_dst_get_next_entry(struct ath11k_base * ab,struct hal_srng * srng)646 u32 *ath11k_hal_srng_dst_get_next_entry(struct ath11k_base *ab,
647 struct hal_srng *srng)
648 {
649 u32 *desc;
650
651 lockdep_assert_held(&srng->lock);
652
653 if (srng->u.dst_ring.tp == srng->u.dst_ring.cached_hp)
654 return NULL;
655
656 desc = srng->ring_base_vaddr + srng->u.dst_ring.tp;
657
658 srng->u.dst_ring.tp += srng->entry_size;
659
660 /* wrap around to start of ring*/
661 if (srng->u.dst_ring.tp == srng->ring_size)
662 srng->u.dst_ring.tp = 0;
663
664 /* Try to prefetch the next descriptor in the ring */
665 if (srng->flags & HAL_SRNG_FLAGS_CACHED)
666 ath11k_hal_srng_prefetch_desc(ab, srng);
667
668 return desc;
669 }
670
ath11k_hal_srng_dst_num_free(struct ath11k_base * ab,struct hal_srng * srng,bool sync_hw_ptr)671 int ath11k_hal_srng_dst_num_free(struct ath11k_base *ab, struct hal_srng *srng,
672 bool sync_hw_ptr)
673 {
674 u32 tp, hp;
675
676 lockdep_assert_held(&srng->lock);
677
678 tp = srng->u.dst_ring.tp;
679
680 if (sync_hw_ptr) {
681 hp = *srng->u.dst_ring.hp_addr;
682 srng->u.dst_ring.cached_hp = hp;
683 } else {
684 hp = srng->u.dst_ring.cached_hp;
685 }
686
687 if (hp >= tp)
688 return (hp - tp) / srng->entry_size;
689 else
690 return (srng->ring_size - tp + hp) / srng->entry_size;
691 }
692
693 /* Returns number of available entries in src ring */
ath11k_hal_srng_src_num_free(struct ath11k_base * ab,struct hal_srng * srng,bool sync_hw_ptr)694 int ath11k_hal_srng_src_num_free(struct ath11k_base *ab, struct hal_srng *srng,
695 bool sync_hw_ptr)
696 {
697 u32 tp, hp;
698
699 lockdep_assert_held(&srng->lock);
700
701 hp = srng->u.src_ring.hp;
702
703 if (sync_hw_ptr) {
704 tp = *srng->u.src_ring.tp_addr;
705 srng->u.src_ring.cached_tp = tp;
706 } else {
707 tp = srng->u.src_ring.cached_tp;
708 }
709
710 if (tp > hp)
711 return ((tp - hp) / srng->entry_size) - 1;
712 else
713 return ((srng->ring_size - hp + tp) / srng->entry_size) - 1;
714 }
715
ath11k_hal_srng_src_get_next_entry(struct ath11k_base * ab,struct hal_srng * srng)716 u32 *ath11k_hal_srng_src_get_next_entry(struct ath11k_base *ab,
717 struct hal_srng *srng)
718 {
719 u32 *desc;
720 u32 next_hp;
721
722 lockdep_assert_held(&srng->lock);
723
724 /* TODO: Using % is expensive, but we have to do this since size of some
725 * SRNG rings is not power of 2 (due to descriptor sizes). Need to see
726 * if separate function is defined for rings having power of 2 ring size
727 * (TCL2SW, REO2SW, SW2RXDMA and CE rings) so that we can avoid the
728 * overhead of % by using mask (with &).
729 */
730 next_hp = (srng->u.src_ring.hp + srng->entry_size) % srng->ring_size;
731
732 if (next_hp == srng->u.src_ring.cached_tp)
733 return NULL;
734
735 desc = srng->ring_base_vaddr + srng->u.src_ring.hp;
736 srng->u.src_ring.hp = next_hp;
737
738 /* TODO: Reap functionality is not used by all rings. If particular
739 * ring does not use reap functionality, we need not update reap_hp
740 * with next_hp pointer. Need to make sure a separate function is used
741 * before doing any optimization by removing below code updating
742 * reap_hp.
743 */
744 srng->u.src_ring.reap_hp = next_hp;
745
746 return desc;
747 }
748
ath11k_hal_srng_src_reap_next(struct ath11k_base * ab,struct hal_srng * srng)749 u32 *ath11k_hal_srng_src_reap_next(struct ath11k_base *ab,
750 struct hal_srng *srng)
751 {
752 u32 *desc;
753 u32 next_reap_hp;
754
755 lockdep_assert_held(&srng->lock);
756
757 next_reap_hp = (srng->u.src_ring.reap_hp + srng->entry_size) %
758 srng->ring_size;
759
760 if (next_reap_hp == srng->u.src_ring.cached_tp)
761 return NULL;
762
763 desc = srng->ring_base_vaddr + next_reap_hp;
764 srng->u.src_ring.reap_hp = next_reap_hp;
765
766 return desc;
767 }
768
ath11k_hal_srng_src_get_next_reaped(struct ath11k_base * ab,struct hal_srng * srng)769 u32 *ath11k_hal_srng_src_get_next_reaped(struct ath11k_base *ab,
770 struct hal_srng *srng)
771 {
772 u32 *desc;
773
774 lockdep_assert_held(&srng->lock);
775
776 if (srng->u.src_ring.hp == srng->u.src_ring.reap_hp)
777 return NULL;
778
779 desc = srng->ring_base_vaddr + srng->u.src_ring.hp;
780 srng->u.src_ring.hp = (srng->u.src_ring.hp + srng->entry_size) %
781 srng->ring_size;
782
783 return desc;
784 }
785
ath11k_hal_srng_src_peek(struct ath11k_base * ab,struct hal_srng * srng)786 u32 *ath11k_hal_srng_src_peek(struct ath11k_base *ab, struct hal_srng *srng)
787 {
788 lockdep_assert_held(&srng->lock);
789
790 if (((srng->u.src_ring.hp + srng->entry_size) % srng->ring_size) ==
791 srng->u.src_ring.cached_tp)
792 return NULL;
793
794 return srng->ring_base_vaddr + srng->u.src_ring.hp;
795 }
796
ath11k_hal_srng_access_begin(struct ath11k_base * ab,struct hal_srng * srng)797 void ath11k_hal_srng_access_begin(struct ath11k_base *ab, struct hal_srng *srng)
798 {
799 lockdep_assert_held(&srng->lock);
800
801 if (srng->ring_dir == HAL_SRNG_DIR_SRC) {
802 srng->u.src_ring.cached_tp =
803 *(volatile u32 *)srng->u.src_ring.tp_addr;
804 } else {
805 srng->u.dst_ring.cached_hp = *srng->u.dst_ring.hp_addr;
806
807 /* Try to prefetch the next descriptor in the ring */
808 if (srng->flags & HAL_SRNG_FLAGS_CACHED)
809 ath11k_hal_srng_prefetch_desc(ab, srng);
810 }
811 }
812
813 /* Update cached ring head/tail pointers to HW. ath11k_hal_srng_access_begin()
814 * should have been called before this.
815 */
ath11k_hal_srng_access_end(struct ath11k_base * ab,struct hal_srng * srng)816 void ath11k_hal_srng_access_end(struct ath11k_base *ab, struct hal_srng *srng)
817 {
818 lockdep_assert_held(&srng->lock);
819
820 /* TODO: See if we need a write memory barrier here */
821 if (srng->flags & HAL_SRNG_FLAGS_LMAC_RING) {
822 /* For LMAC rings, ring pointer updates are done through FW and
823 * hence written to a shared memory location that is read by FW
824 */
825 if (srng->ring_dir == HAL_SRNG_DIR_SRC) {
826 srng->u.src_ring.last_tp =
827 *(volatile u32 *)srng->u.src_ring.tp_addr;
828 *srng->u.src_ring.hp_addr = srng->u.src_ring.hp;
829 } else {
830 srng->u.dst_ring.last_hp = *srng->u.dst_ring.hp_addr;
831 *srng->u.dst_ring.tp_addr = srng->u.dst_ring.tp;
832 }
833 } else {
834 if (srng->ring_dir == HAL_SRNG_DIR_SRC) {
835 srng->u.src_ring.last_tp =
836 *(volatile u32 *)srng->u.src_ring.tp_addr;
837 ath11k_hif_write32(ab,
838 (unsigned long)srng->u.src_ring.hp_addr -
839 (unsigned long)ab->mem,
840 srng->u.src_ring.hp);
841 } else {
842 srng->u.dst_ring.last_hp = *srng->u.dst_ring.hp_addr;
843 ath11k_hif_write32(ab,
844 (unsigned long)srng->u.dst_ring.tp_addr -
845 (unsigned long)ab->mem,
846 srng->u.dst_ring.tp);
847 }
848 }
849
850 srng->timestamp = jiffies;
851 }
852
ath11k_hal_setup_link_idle_list(struct ath11k_base * ab,struct hal_wbm_idle_scatter_list * sbuf,u32 nsbufs,u32 tot_link_desc,u32 end_offset)853 void ath11k_hal_setup_link_idle_list(struct ath11k_base *ab,
854 struct hal_wbm_idle_scatter_list *sbuf,
855 u32 nsbufs, u32 tot_link_desc,
856 u32 end_offset)
857 {
858 struct ath11k_buffer_addr *link_addr;
859 int i;
860 u32 reg_scatter_buf_sz = HAL_WBM_IDLE_SCATTER_BUF_SIZE / 64;
861
862 link_addr = (void *)sbuf[0].vaddr + HAL_WBM_IDLE_SCATTER_BUF_SIZE;
863
864 for (i = 1; i < nsbufs; i++) {
865 link_addr->info0 = sbuf[i].paddr & HAL_ADDR_LSB_REG_MASK;
866 link_addr->info1 = FIELD_PREP(
867 HAL_WBM_SCATTERED_DESC_MSB_BASE_ADDR_39_32,
868 (u64)sbuf[i].paddr >> HAL_ADDR_MSB_REG_SHIFT) |
869 FIELD_PREP(
870 HAL_WBM_SCATTERED_DESC_MSB_BASE_ADDR_MATCH_TAG,
871 BASE_ADDR_MATCH_TAG_VAL);
872
873 link_addr = (void *)sbuf[i].vaddr +
874 HAL_WBM_IDLE_SCATTER_BUF_SIZE;
875 }
876
877 ath11k_hif_write32(ab,
878 HAL_SEQ_WCSS_UMAC_WBM_REG + HAL_WBM_R0_IDLE_LIST_CONTROL_ADDR,
879 FIELD_PREP(HAL_WBM_SCATTER_BUFFER_SIZE, reg_scatter_buf_sz) |
880 FIELD_PREP(HAL_WBM_LINK_DESC_IDLE_LIST_MODE, 0x1));
881 ath11k_hif_write32(ab,
882 HAL_SEQ_WCSS_UMAC_WBM_REG + HAL_WBM_R0_IDLE_LIST_SIZE_ADDR,
883 FIELD_PREP(HAL_WBM_SCATTER_RING_SIZE_OF_IDLE_LINK_DESC_LIST,
884 reg_scatter_buf_sz * nsbufs));
885 ath11k_hif_write32(ab,
886 HAL_SEQ_WCSS_UMAC_WBM_REG +
887 HAL_WBM_SCATTERED_RING_BASE_LSB,
888 FIELD_PREP(BUFFER_ADDR_INFO0_ADDR,
889 sbuf[0].paddr & HAL_ADDR_LSB_REG_MASK));
890 ath11k_hif_write32(ab,
891 HAL_SEQ_WCSS_UMAC_WBM_REG +
892 HAL_WBM_SCATTERED_RING_BASE_MSB,
893 FIELD_PREP(
894 HAL_WBM_SCATTERED_DESC_MSB_BASE_ADDR_39_32,
895 (u64)sbuf[0].paddr >> HAL_ADDR_MSB_REG_SHIFT) |
896 FIELD_PREP(
897 HAL_WBM_SCATTERED_DESC_MSB_BASE_ADDR_MATCH_TAG,
898 BASE_ADDR_MATCH_TAG_VAL));
899
900 /* Setup head and tail pointers for the idle list */
901 ath11k_hif_write32(ab,
902 HAL_SEQ_WCSS_UMAC_WBM_REG +
903 HAL_WBM_SCATTERED_DESC_PTR_HEAD_INFO_IX0,
904 FIELD_PREP(BUFFER_ADDR_INFO0_ADDR,
905 sbuf[nsbufs - 1].paddr));
906 ath11k_hif_write32(ab,
907 HAL_SEQ_WCSS_UMAC_WBM_REG +
908 HAL_WBM_SCATTERED_DESC_PTR_HEAD_INFO_IX1,
909 FIELD_PREP(
910 HAL_WBM_SCATTERED_DESC_MSB_BASE_ADDR_39_32,
911 ((u64)sbuf[nsbufs - 1].paddr >>
912 HAL_ADDR_MSB_REG_SHIFT)) |
913 FIELD_PREP(HAL_WBM_SCATTERED_DESC_HEAD_P_OFFSET_IX1,
914 (end_offset >> 2)));
915 ath11k_hif_write32(ab,
916 HAL_SEQ_WCSS_UMAC_WBM_REG +
917 HAL_WBM_SCATTERED_DESC_PTR_HEAD_INFO_IX0,
918 FIELD_PREP(BUFFER_ADDR_INFO0_ADDR,
919 sbuf[0].paddr));
920
921 ath11k_hif_write32(ab,
922 HAL_SEQ_WCSS_UMAC_WBM_REG +
923 HAL_WBM_SCATTERED_DESC_PTR_TAIL_INFO_IX0,
924 FIELD_PREP(BUFFER_ADDR_INFO0_ADDR,
925 sbuf[0].paddr));
926 ath11k_hif_write32(ab,
927 HAL_SEQ_WCSS_UMAC_WBM_REG +
928 HAL_WBM_SCATTERED_DESC_PTR_TAIL_INFO_IX1,
929 FIELD_PREP(
930 HAL_WBM_SCATTERED_DESC_MSB_BASE_ADDR_39_32,
931 ((u64)sbuf[0].paddr >> HAL_ADDR_MSB_REG_SHIFT)) |
932 FIELD_PREP(HAL_WBM_SCATTERED_DESC_TAIL_P_OFFSET_IX1,
933 0));
934 ath11k_hif_write32(ab,
935 HAL_SEQ_WCSS_UMAC_WBM_REG +
936 HAL_WBM_SCATTERED_DESC_PTR_HP_ADDR,
937 2 * tot_link_desc);
938
939 /* Enable the SRNG */
940 ath11k_hif_write32(ab,
941 HAL_SEQ_WCSS_UMAC_WBM_REG +
942 HAL_WBM_IDLE_LINK_RING_MISC_ADDR(ab), 0x40);
943 }
944
ath11k_hal_srng_setup(struct ath11k_base * ab,enum hal_ring_type type,int ring_num,int mac_id,struct hal_srng_params * params)945 int ath11k_hal_srng_setup(struct ath11k_base *ab, enum hal_ring_type type,
946 int ring_num, int mac_id,
947 struct hal_srng_params *params)
948 {
949 struct ath11k_hal *hal = &ab->hal;
950 struct hal_srng_config *srng_config = &ab->hal.srng_config[type];
951 struct hal_srng *srng;
952 int ring_id;
953 u32 lmac_idx;
954 int i;
955 u32 reg_base;
956
957 ring_id = ath11k_hal_srng_get_ring_id(ab, type, ring_num, mac_id);
958 if (ring_id < 0)
959 return ring_id;
960
961 srng = &hal->srng_list[ring_id];
962
963 srng->ring_id = ring_id;
964 srng->ring_dir = srng_config->ring_dir;
965 srng->ring_base_paddr = params->ring_base_paddr;
966 srng->ring_base_vaddr = params->ring_base_vaddr;
967 srng->entry_size = srng_config->entry_size;
968 srng->num_entries = params->num_entries;
969 srng->ring_size = srng->entry_size * srng->num_entries;
970 srng->intr_batch_cntr_thres_entries =
971 params->intr_batch_cntr_thres_entries;
972 srng->intr_timer_thres_us = params->intr_timer_thres_us;
973 srng->flags = params->flags;
974 srng->msi_addr = params->msi_addr;
975 srng->msi_data = params->msi_data;
976 srng->initialized = 1;
977 spin_lock_init(&srng->lock);
978 lockdep_set_class(&srng->lock, hal->srng_key + ring_id);
979
980 for (i = 0; i < HAL_SRNG_NUM_REG_GRP; i++) {
981 srng->hwreg_base[i] = srng_config->reg_start[i] +
982 (ring_num * srng_config->reg_size[i]);
983 }
984
985 memset(srng->ring_base_vaddr, 0,
986 (srng->entry_size * srng->num_entries) << 2);
987
988 /* TODO: Add comments on these swap configurations */
989 if (IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
990 srng->flags |= HAL_SRNG_FLAGS_MSI_SWAP | HAL_SRNG_FLAGS_DATA_TLV_SWAP |
991 HAL_SRNG_FLAGS_RING_PTR_SWAP;
992
993 reg_base = srng->hwreg_base[HAL_SRNG_REG_GRP_R2];
994
995 if (srng->ring_dir == HAL_SRNG_DIR_SRC) {
996 srng->u.src_ring.hp = 0;
997 srng->u.src_ring.cached_tp = 0;
998 srng->u.src_ring.reap_hp = srng->ring_size - srng->entry_size;
999 srng->u.src_ring.tp_addr = (void *)(hal->rdp.vaddr + ring_id);
1000 srng->u.src_ring.low_threshold = params->low_threshold *
1001 srng->entry_size;
1002 if (srng_config->lmac_ring) {
1003 lmac_idx = ring_id - HAL_SRNG_RING_ID_LMAC1_ID_START;
1004 srng->u.src_ring.hp_addr = (void *)(hal->wrp.vaddr +
1005 lmac_idx);
1006 srng->flags |= HAL_SRNG_FLAGS_LMAC_RING;
1007 } else {
1008 if (!ab->hw_params.supports_shadow_regs)
1009 srng->u.src_ring.hp_addr =
1010 (u32 *)((unsigned long)ab->mem + reg_base);
1011 else
1012 ath11k_dbg(ab, ATH11K_DBG_HAL,
1013 "type %d ring_num %d reg_base 0x%x shadow 0x%lx\n",
1014 type, ring_num,
1015 reg_base,
1016 (unsigned long)srng->u.src_ring.hp_addr -
1017 (unsigned long)ab->mem);
1018 }
1019 } else {
1020 /* During initialization loop count in all the descriptors
1021 * will be set to zero, and HW will set it to 1 on completing
1022 * descriptor update in first loop, and increments it by 1 on
1023 * subsequent loops (loop count wraps around after reaching
1024 * 0xffff). The 'loop_cnt' in SW ring state is the expected
1025 * loop count in descriptors updated by HW (to be processed
1026 * by SW).
1027 */
1028 srng->u.dst_ring.loop_cnt = 1;
1029 srng->u.dst_ring.tp = 0;
1030 srng->u.dst_ring.cached_hp = 0;
1031 srng->u.dst_ring.hp_addr = (void *)(hal->rdp.vaddr + ring_id);
1032 if (srng_config->lmac_ring) {
1033 /* For LMAC rings, tail pointer updates will be done
1034 * through FW by writing to a shared memory location
1035 */
1036 lmac_idx = ring_id - HAL_SRNG_RING_ID_LMAC1_ID_START;
1037 srng->u.dst_ring.tp_addr = (void *)(hal->wrp.vaddr +
1038 lmac_idx);
1039 srng->flags |= HAL_SRNG_FLAGS_LMAC_RING;
1040 } else {
1041 if (!ab->hw_params.supports_shadow_regs)
1042 srng->u.dst_ring.tp_addr =
1043 (u32 *)((unsigned long)ab->mem + reg_base +
1044 (HAL_REO1_RING_TP(ab) - HAL_REO1_RING_HP(ab)));
1045 else
1046 ath11k_dbg(ab, ATH11K_DBG_HAL,
1047 "type %d ring_num %d target_reg 0x%x shadow 0x%lx\n",
1048 type, ring_num,
1049 reg_base + (HAL_REO1_RING_TP(ab) -
1050 HAL_REO1_RING_HP(ab)),
1051 (unsigned long)srng->u.dst_ring.tp_addr -
1052 (unsigned long)ab->mem);
1053 }
1054 }
1055
1056 if (srng_config->lmac_ring)
1057 return ring_id;
1058
1059 ath11k_hal_srng_hw_init(ab, srng);
1060
1061 if (type == HAL_CE_DST) {
1062 srng->u.dst_ring.max_buffer_length = params->max_buffer_len;
1063 ath11k_hal_ce_dst_setup(ab, srng, ring_num);
1064 }
1065
1066 return ring_id;
1067 }
1068
ath11k_hal_srng_update_hp_tp_addr(struct ath11k_base * ab,int shadow_cfg_idx,enum hal_ring_type ring_type,int ring_num)1069 static void ath11k_hal_srng_update_hp_tp_addr(struct ath11k_base *ab,
1070 int shadow_cfg_idx,
1071 enum hal_ring_type ring_type,
1072 int ring_num)
1073 {
1074 struct hal_srng *srng;
1075 struct ath11k_hal *hal = &ab->hal;
1076 int ring_id;
1077 struct hal_srng_config *srng_config = &hal->srng_config[ring_type];
1078
1079 ring_id = ath11k_hal_srng_get_ring_id(ab, ring_type, ring_num, 0);
1080 if (ring_id < 0)
1081 return;
1082
1083 srng = &hal->srng_list[ring_id];
1084
1085 if (srng_config->ring_dir == HAL_SRNG_DIR_DST)
1086 srng->u.dst_ring.tp_addr = (u32 *)(HAL_SHADOW_REG(ab, shadow_cfg_idx) +
1087 (unsigned long)ab->mem);
1088 else
1089 srng->u.src_ring.hp_addr = (u32 *)(HAL_SHADOW_REG(ab, shadow_cfg_idx) +
1090 (unsigned long)ab->mem);
1091 }
1092
ath11k_hal_srng_update_shadow_config(struct ath11k_base * ab,enum hal_ring_type ring_type,int ring_num)1093 int ath11k_hal_srng_update_shadow_config(struct ath11k_base *ab,
1094 enum hal_ring_type ring_type,
1095 int ring_num)
1096 {
1097 struct ath11k_hal *hal = &ab->hal;
1098 struct hal_srng_config *srng_config = &hal->srng_config[ring_type];
1099 int shadow_cfg_idx = hal->num_shadow_reg_configured;
1100 u32 target_reg;
1101
1102 if (shadow_cfg_idx >= HAL_SHADOW_NUM_REGS)
1103 return -EINVAL;
1104
1105 hal->num_shadow_reg_configured++;
1106
1107 target_reg = srng_config->reg_start[HAL_HP_OFFSET_IN_REG_START];
1108 target_reg += srng_config->reg_size[HAL_HP_OFFSET_IN_REG_START] *
1109 ring_num;
1110
1111 /* For destination ring, shadow the TP */
1112 if (srng_config->ring_dir == HAL_SRNG_DIR_DST)
1113 target_reg += HAL_OFFSET_FROM_HP_TO_TP;
1114
1115 hal->shadow_reg_addr[shadow_cfg_idx] = target_reg;
1116
1117 /* update hp/tp addr to hal structure*/
1118 ath11k_hal_srng_update_hp_tp_addr(ab, shadow_cfg_idx, ring_type,
1119 ring_num);
1120
1121 ath11k_dbg(ab, ATH11K_DBG_HAL,
1122 "update shadow config target_reg %x shadow reg 0x%x shadow_idx 0x%x ring_type %d ring num %d",
1123 target_reg,
1124 HAL_SHADOW_REG(ab, shadow_cfg_idx),
1125 shadow_cfg_idx,
1126 ring_type, ring_num);
1127
1128 return 0;
1129 }
1130
ath11k_hal_srng_shadow_config(struct ath11k_base * ab)1131 void ath11k_hal_srng_shadow_config(struct ath11k_base *ab)
1132 {
1133 struct ath11k_hal *hal = &ab->hal;
1134 int ring_type, ring_num;
1135
1136 /* update all the non-CE srngs. */
1137 for (ring_type = 0; ring_type < HAL_MAX_RING_TYPES; ring_type++) {
1138 struct hal_srng_config *srng_config = &hal->srng_config[ring_type];
1139
1140 if (ring_type == HAL_CE_SRC ||
1141 ring_type == HAL_CE_DST ||
1142 ring_type == HAL_CE_DST_STATUS)
1143 continue;
1144
1145 if (srng_config->lmac_ring)
1146 continue;
1147
1148 for (ring_num = 0; ring_num < srng_config->max_rings; ring_num++)
1149 ath11k_hal_srng_update_shadow_config(ab, ring_type, ring_num);
1150 }
1151 }
1152
ath11k_hal_srng_get_shadow_config(struct ath11k_base * ab,u32 ** cfg,u32 * len)1153 void ath11k_hal_srng_get_shadow_config(struct ath11k_base *ab,
1154 u32 **cfg, u32 *len)
1155 {
1156 struct ath11k_hal *hal = &ab->hal;
1157
1158 *len = hal->num_shadow_reg_configured;
1159 *cfg = hal->shadow_reg_addr;
1160 }
1161
ath11k_hal_srng_shadow_update_hp_tp(struct ath11k_base * ab,struct hal_srng * srng)1162 void ath11k_hal_srng_shadow_update_hp_tp(struct ath11k_base *ab,
1163 struct hal_srng *srng)
1164 {
1165 lockdep_assert_held(&srng->lock);
1166
1167 /* check whether the ring is empty. Update the shadow
1168 * HP only when then ring isn't empty.
1169 */
1170 if (srng->ring_dir == HAL_SRNG_DIR_SRC &&
1171 *srng->u.src_ring.tp_addr != srng->u.src_ring.hp)
1172 ath11k_hal_srng_access_end(ab, srng);
1173 }
1174
ath11k_hal_srng_create_config(struct ath11k_base * ab)1175 static int ath11k_hal_srng_create_config(struct ath11k_base *ab)
1176 {
1177 struct ath11k_hal *hal = &ab->hal;
1178 struct hal_srng_config *s;
1179
1180 hal->srng_config = kmemdup(hw_srng_config_template,
1181 sizeof(hw_srng_config_template),
1182 GFP_KERNEL);
1183 if (!hal->srng_config)
1184 return -ENOMEM;
1185
1186 s = &hal->srng_config[HAL_REO_DST];
1187 s->reg_start[0] = HAL_SEQ_WCSS_UMAC_REO_REG + HAL_REO1_RING_BASE_LSB(ab);
1188 s->reg_start[1] = HAL_SEQ_WCSS_UMAC_REO_REG + HAL_REO1_RING_HP(ab);
1189 s->reg_size[0] = HAL_REO2_RING_BASE_LSB(ab) - HAL_REO1_RING_BASE_LSB(ab);
1190 s->reg_size[1] = HAL_REO2_RING_HP(ab) - HAL_REO1_RING_HP(ab);
1191
1192 s = &hal->srng_config[HAL_REO_EXCEPTION];
1193 s->reg_start[0] = HAL_SEQ_WCSS_UMAC_REO_REG + HAL_REO_TCL_RING_BASE_LSB(ab);
1194 s->reg_start[1] = HAL_SEQ_WCSS_UMAC_REO_REG + HAL_REO_TCL_RING_HP(ab);
1195
1196 s = &hal->srng_config[HAL_REO_REINJECT];
1197 s->reg_start[0] = HAL_SEQ_WCSS_UMAC_REO_REG + HAL_SW2REO_RING_BASE_LSB(ab);
1198 s->reg_start[1] = HAL_SEQ_WCSS_UMAC_REO_REG + HAL_SW2REO_RING_HP(ab);
1199
1200 s = &hal->srng_config[HAL_REO_CMD];
1201 s->reg_start[0] = HAL_SEQ_WCSS_UMAC_REO_REG + HAL_REO_CMD_RING_BASE_LSB(ab);
1202 s->reg_start[1] = HAL_SEQ_WCSS_UMAC_REO_REG + HAL_REO_CMD_HP(ab);
1203
1204 s = &hal->srng_config[HAL_REO_STATUS];
1205 s->reg_start[0] = HAL_SEQ_WCSS_UMAC_REO_REG + HAL_REO_STATUS_RING_BASE_LSB(ab);
1206 s->reg_start[1] = HAL_SEQ_WCSS_UMAC_REO_REG + HAL_REO_STATUS_HP(ab);
1207
1208 s = &hal->srng_config[HAL_TCL_DATA];
1209 s->reg_start[0] = HAL_SEQ_WCSS_UMAC_TCL_REG + HAL_TCL1_RING_BASE_LSB(ab);
1210 s->reg_start[1] = HAL_SEQ_WCSS_UMAC_TCL_REG + HAL_TCL1_RING_HP;
1211 s->reg_size[0] = HAL_TCL2_RING_BASE_LSB(ab) - HAL_TCL1_RING_BASE_LSB(ab);
1212 s->reg_size[1] = HAL_TCL2_RING_HP - HAL_TCL1_RING_HP;
1213
1214 s = &hal->srng_config[HAL_TCL_CMD];
1215 s->reg_start[0] = HAL_SEQ_WCSS_UMAC_TCL_REG + HAL_TCL_RING_BASE_LSB(ab);
1216 s->reg_start[1] = HAL_SEQ_WCSS_UMAC_TCL_REG + HAL_TCL_RING_HP;
1217
1218 s = &hal->srng_config[HAL_TCL_STATUS];
1219 s->reg_start[0] = HAL_SEQ_WCSS_UMAC_TCL_REG + HAL_TCL_STATUS_RING_BASE_LSB(ab);
1220 s->reg_start[1] = HAL_SEQ_WCSS_UMAC_TCL_REG + HAL_TCL_STATUS_RING_HP;
1221
1222 s = &hal->srng_config[HAL_CE_SRC];
1223 s->reg_start[0] = HAL_SEQ_WCSS_UMAC_CE0_SRC_REG(ab) + HAL_CE_DST_RING_BASE_LSB +
1224 ATH11K_CE_OFFSET(ab);
1225 s->reg_start[1] = HAL_SEQ_WCSS_UMAC_CE0_SRC_REG(ab) + HAL_CE_DST_RING_HP +
1226 ATH11K_CE_OFFSET(ab);
1227 s->reg_size[0] = HAL_SEQ_WCSS_UMAC_CE1_SRC_REG(ab) -
1228 HAL_SEQ_WCSS_UMAC_CE0_SRC_REG(ab);
1229 s->reg_size[1] = HAL_SEQ_WCSS_UMAC_CE1_SRC_REG(ab) -
1230 HAL_SEQ_WCSS_UMAC_CE0_SRC_REG(ab);
1231
1232 s = &hal->srng_config[HAL_CE_DST];
1233 s->reg_start[0] = HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab) + HAL_CE_DST_RING_BASE_LSB +
1234 ATH11K_CE_OFFSET(ab);
1235 s->reg_start[1] = HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab) + HAL_CE_DST_RING_HP +
1236 ATH11K_CE_OFFSET(ab);
1237 s->reg_size[0] = HAL_SEQ_WCSS_UMAC_CE1_DST_REG(ab) -
1238 HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab);
1239 s->reg_size[1] = HAL_SEQ_WCSS_UMAC_CE1_DST_REG(ab) -
1240 HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab);
1241
1242 s = &hal->srng_config[HAL_CE_DST_STATUS];
1243 s->reg_start[0] = HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab) +
1244 HAL_CE_DST_STATUS_RING_BASE_LSB + ATH11K_CE_OFFSET(ab);
1245 s->reg_start[1] = HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab) + HAL_CE_DST_STATUS_RING_HP +
1246 ATH11K_CE_OFFSET(ab);
1247 s->reg_size[0] = HAL_SEQ_WCSS_UMAC_CE1_DST_REG(ab) -
1248 HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab);
1249 s->reg_size[1] = HAL_SEQ_WCSS_UMAC_CE1_DST_REG(ab) -
1250 HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab);
1251
1252 s = &hal->srng_config[HAL_WBM_IDLE_LINK];
1253 s->reg_start[0] = HAL_SEQ_WCSS_UMAC_WBM_REG + HAL_WBM_IDLE_LINK_RING_BASE_LSB(ab);
1254 s->reg_start[1] = HAL_SEQ_WCSS_UMAC_WBM_REG + HAL_WBM_IDLE_LINK_RING_HP;
1255
1256 s = &hal->srng_config[HAL_SW2WBM_RELEASE];
1257 s->reg_start[0] = HAL_SEQ_WCSS_UMAC_WBM_REG + HAL_WBM_RELEASE_RING_BASE_LSB(ab);
1258 s->reg_start[1] = HAL_SEQ_WCSS_UMAC_WBM_REG + HAL_WBM_RELEASE_RING_HP;
1259
1260 s = &hal->srng_config[HAL_WBM2SW_RELEASE];
1261 s->reg_start[0] = HAL_SEQ_WCSS_UMAC_WBM_REG + HAL_WBM0_RELEASE_RING_BASE_LSB(ab);
1262 s->reg_start[1] = HAL_SEQ_WCSS_UMAC_WBM_REG + HAL_WBM0_RELEASE_RING_HP;
1263 s->reg_size[0] = HAL_WBM1_RELEASE_RING_BASE_LSB(ab) -
1264 HAL_WBM0_RELEASE_RING_BASE_LSB(ab);
1265 s->reg_size[1] = HAL_WBM1_RELEASE_RING_HP - HAL_WBM0_RELEASE_RING_HP;
1266
1267 return 0;
1268 }
1269
ath11k_hal_register_srng_key(struct ath11k_base * ab)1270 static void ath11k_hal_register_srng_key(struct ath11k_base *ab)
1271 {
1272 struct ath11k_hal *hal = &ab->hal;
1273 u32 ring_id;
1274
1275 for (ring_id = 0; ring_id < HAL_SRNG_RING_ID_MAX; ring_id++)
1276 lockdep_register_key(hal->srng_key + ring_id);
1277 }
1278
ath11k_hal_unregister_srng_key(struct ath11k_base * ab)1279 static void ath11k_hal_unregister_srng_key(struct ath11k_base *ab)
1280 {
1281 struct ath11k_hal *hal = &ab->hal;
1282 u32 ring_id;
1283
1284 for (ring_id = 0; ring_id < HAL_SRNG_RING_ID_MAX; ring_id++)
1285 lockdep_unregister_key(hal->srng_key + ring_id);
1286 }
1287
ath11k_hal_srng_init(struct ath11k_base * ab)1288 int ath11k_hal_srng_init(struct ath11k_base *ab)
1289 {
1290 struct ath11k_hal *hal = &ab->hal;
1291 int ret;
1292
1293 memset(hal, 0, sizeof(*hal));
1294
1295 ret = ath11k_hal_srng_create_config(ab);
1296 if (ret)
1297 goto err_hal;
1298
1299 ret = ath11k_hal_alloc_cont_rdp(ab);
1300 if (ret)
1301 goto err_hal;
1302
1303 ret = ath11k_hal_alloc_cont_wrp(ab);
1304 if (ret)
1305 goto err_free_cont_rdp;
1306
1307 ath11k_hal_register_srng_key(ab);
1308
1309 return 0;
1310
1311 err_free_cont_rdp:
1312 ath11k_hal_free_cont_rdp(ab);
1313
1314 err_hal:
1315 return ret;
1316 }
1317 EXPORT_SYMBOL(ath11k_hal_srng_init);
1318
ath11k_hal_srng_deinit(struct ath11k_base * ab)1319 void ath11k_hal_srng_deinit(struct ath11k_base *ab)
1320 {
1321 struct ath11k_hal *hal = &ab->hal;
1322
1323 ath11k_hal_unregister_srng_key(ab);
1324 ath11k_hal_free_cont_rdp(ab);
1325 ath11k_hal_free_cont_wrp(ab);
1326 kfree(hal->srng_config);
1327 }
1328 EXPORT_SYMBOL(ath11k_hal_srng_deinit);
1329
ath11k_hal_dump_srng_stats(struct ath11k_base * ab)1330 void ath11k_hal_dump_srng_stats(struct ath11k_base *ab)
1331 {
1332 struct hal_srng *srng;
1333 struct ath11k_ext_irq_grp *irq_grp;
1334 struct ath11k_ce_pipe *ce_pipe;
1335 int i;
1336
1337 ath11k_err(ab, "Last interrupt received for each CE:\n");
1338 for (i = 0; i < ab->hw_params.ce_count; i++) {
1339 ce_pipe = &ab->ce.ce_pipe[i];
1340
1341 if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
1342 continue;
1343
1344 ath11k_err(ab, "CE_id %d pipe_num %d %ums before\n",
1345 i, ce_pipe->pipe_num,
1346 jiffies_to_msecs(jiffies - ce_pipe->timestamp));
1347 }
1348
1349 ath11k_err(ab, "\nLast interrupt received for each group:\n");
1350 for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
1351 irq_grp = &ab->ext_irq_grp[i];
1352 ath11k_err(ab, "group_id %d %ums before\n",
1353 irq_grp->grp_id,
1354 jiffies_to_msecs(jiffies - irq_grp->timestamp));
1355 }
1356
1357 for (i = 0; i < HAL_SRNG_RING_ID_MAX; i++) {
1358 srng = &ab->hal.srng_list[i];
1359
1360 if (!srng->initialized)
1361 continue;
1362
1363 if (srng->ring_dir == HAL_SRNG_DIR_SRC)
1364 ath11k_err(ab,
1365 "src srng id %u hp %u, reap_hp %u, cur tp %u, cached tp %u last tp %u napi processed before %ums\n",
1366 srng->ring_id, srng->u.src_ring.hp,
1367 srng->u.src_ring.reap_hp,
1368 *srng->u.src_ring.tp_addr, srng->u.src_ring.cached_tp,
1369 srng->u.src_ring.last_tp,
1370 jiffies_to_msecs(jiffies - srng->timestamp));
1371 else if (srng->ring_dir == HAL_SRNG_DIR_DST)
1372 ath11k_err(ab,
1373 "dst srng id %u tp %u, cur hp %u, cached hp %u last hp %u napi processed before %ums\n",
1374 srng->ring_id, srng->u.dst_ring.tp,
1375 *srng->u.dst_ring.hp_addr,
1376 srng->u.dst_ring.cached_hp,
1377 srng->u.dst_ring.last_hp,
1378 jiffies_to_msecs(jiffies - srng->timestamp));
1379 }
1380 }
1381