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
12static 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
193static 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(dev: ab->dev, size, dma_handle: &hal->rdp.paddr,
200 GFP_KERNEL);
201 if (!hal->rdp.vaddr)
202 return -ENOMEM;
203
204 return 0;
205}
206
207static 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(dev: ab->dev, size,
217 cpu_addr: hal->rdp.vaddr, dma_handle: hal->rdp.paddr);
218 hal->rdp.vaddr = NULL;
219}
220
221static 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(dev: ab->dev, size, dma_handle: &hal->wrp.paddr,
228 GFP_KERNEL);
229 if (!hal->wrp.vaddr)
230 return -ENOMEM;
231
232 return 0;
233}
234
235static 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(dev: ab->dev, size,
245 cpu_addr: hal->wrp.vaddr, dma_handle: hal->wrp.paddr);
246 hal->wrp.vaddr = NULL;
247}
248
249static 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, address: 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, address: addr, data: val);
265}
266
267static 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, address: reg_base +
279 HAL_REO1_RING_MSI1_BASE_LSB_OFFSET(ab),
280 data: 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, address: reg_base +
287 HAL_REO1_RING_MSI1_BASE_MSB_OFFSET(ab), data: val);
288
289 ath11k_hif_write32(ab,
290 address: reg_base + HAL_REO1_RING_MSI1_DATA_OFFSET(ab),
291 data: srng->msi_data);
292 }
293
294 ath11k_hif_write32(ab, address: reg_base, data: 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, address: reg_base + HAL_REO1_RING_BASE_MSB_OFFSET(ab), data: 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, address: reg_base + HAL_REO1_RING_ID_OFFSET(ab), data: 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 address: reg_base + HAL_REO1_RING_PRODUCER_INT_SETUP_OFFSET(ab),
317 data: 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, address: reg_base + HAL_REO1_RING_HP_ADDR_LSB_OFFSET(ab),
323 data: hp_addr & HAL_ADDR_LSB_REG_MASK);
324 ath11k_hif_write32(ab, address: reg_base + HAL_REO1_RING_HP_ADDR_MSB_OFFSET(ab),
325 data: 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, address: reg_base, data: 0);
330 ath11k_hif_write32(ab, address: reg_base + HAL_REO1_RING_TP_OFFSET(ab), data: 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, address: reg_base + HAL_REO1_RING_MISC_OFFSET(ab), data: val);
344}
345
346static 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, address: reg_base +
358 HAL_TCL1_RING_MSI1_BASE_LSB_OFFSET(ab),
359 data: 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, address: reg_base +
366 HAL_TCL1_RING_MSI1_BASE_MSB_OFFSET(ab),
367 data: val);
368
369 ath11k_hif_write32(ab, address: reg_base +
370 HAL_TCL1_RING_MSI1_DATA_OFFSET(ab),
371 data: srng->msi_data);
372 }
373
374 ath11k_hif_write32(ab, address: reg_base, data: 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, address: reg_base + HAL_TCL1_RING_BASE_MSB_OFFSET(ab), data: val);
382
383 val = FIELD_PREP(HAL_REO1_RING_ID_ENTRY_SIZE, srng->entry_size);
384 ath11k_hif_write32(ab, address: reg_base + HAL_TCL1_RING_ID_OFFSET(ab), data: val);
385
386 if (srng->ring_id == HAL_SRNG_RING_ID_WBM_IDLE_LINK) {
387 ath11k_hif_write32(ab, address: reg_base, data: (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, address: reg_base + HAL_TCL1_RING_BASE_MSB_OFFSET(ab), data: 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 address: reg_base + HAL_TCL1_RING_CONSR_INT_SETUP_IX0_OFFSET(ab),
409 data: 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 address: reg_base + HAL_TCL1_RING_CONSR_INT_SETUP_IX1_OFFSET(ab),
418 data: 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 address: reg_base + HAL_TCL1_RING_TP_ADDR_LSB_OFFSET(ab),
426 data: tp_addr & HAL_ADDR_LSB_REG_MASK);
427 ath11k_hif_write32(ab,
428 address: reg_base + HAL_TCL1_RING_TP_ADDR_MSB_OFFSET(ab),
429 data: 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, address: reg_base, data: 0);
435 ath11k_hif_write32(ab, address: reg_base + HAL_TCL1_RING_TP_OFFSET, data: 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, address: reg_base + HAL_TCL1_RING_MISC_OFFSET(ab), data: val);
453}
454
455static 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
464static 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, fmt: "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
486int 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
498int 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
510void 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
525dma_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
541dma_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
557u32 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
571void 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 = 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
587void ath11k_hal_ce_dst_set_desc(void *buf, dma_addr_t paddr)
588{
589 struct hal_ce_srng_dest_desc *desc = buf;
590
591 desc->buffer_addr_low = paddr & HAL_ADDR_LSB_REG_MASK;
592 desc->buffer_addr_info =
593 FIELD_PREP(HAL_CE_DEST_DESC_ADDR_INFO_ADDR_HI,
594 ((u64)paddr >> HAL_ADDR_MSB_REG_SHIFT));
595}
596
597u32 ath11k_hal_ce_dst_status_get_length(void *buf)
598{
599 struct hal_ce_srng_dst_status_desc *desc = buf;
600 u32 len;
601
602 len = FIELD_GET(HAL_CE_DST_STATUS_DESC_FLAGS_LEN, desc->flags);
603 desc->flags &= ~HAL_CE_DST_STATUS_DESC_FLAGS_LEN;
604
605 return len;
606}
607
608void ath11k_hal_set_link_desc_addr(struct hal_wbm_link_desc *desc, u32 cookie,
609 dma_addr_t paddr)
610{
611 desc->buf_addr_info.info0 = FIELD_PREP(BUFFER_ADDR_INFO0_ADDR,
612 (paddr & HAL_ADDR_LSB_REG_MASK));
613 desc->buf_addr_info.info1 = FIELD_PREP(BUFFER_ADDR_INFO1_ADDR,
614 ((u64)paddr >> HAL_ADDR_MSB_REG_SHIFT)) |
615 FIELD_PREP(BUFFER_ADDR_INFO1_RET_BUF_MGR, 1) |
616 FIELD_PREP(BUFFER_ADDR_INFO1_SW_COOKIE, cookie);
617}
618
619u32 *ath11k_hal_srng_dst_peek(struct ath11k_base *ab, struct hal_srng *srng)
620{
621 lockdep_assert_held(&srng->lock);
622
623 if (srng->u.dst_ring.tp != srng->u.dst_ring.cached_hp)
624 return (srng->ring_base_vaddr + srng->u.dst_ring.tp);
625
626 return NULL;
627}
628
629static u32 *ath11k_hal_srng_dst_peek_with_dma(struct ath11k_base *ab,
630 struct hal_srng *srng, dma_addr_t *paddr)
631{
632 lockdep_assert_held(&srng->lock);
633
634 if (srng->u.dst_ring.tp != srng->u.dst_ring.cached_hp) {
635 *paddr = srng->ring_base_paddr +
636 sizeof(*srng->ring_base_vaddr) * srng->u.dst_ring.tp;
637 return srng->ring_base_vaddr + srng->u.dst_ring.tp;
638 }
639
640 return NULL;
641}
642
643static void ath11k_hal_srng_prefetch_desc(struct ath11k_base *ab,
644 struct hal_srng *srng)
645{
646 dma_addr_t desc_paddr;
647 u32 *desc;
648
649 /* prefetch only if desc is available */
650 desc = ath11k_hal_srng_dst_peek_with_dma(ab, srng, paddr: &desc_paddr);
651 if (likely(desc)) {
652 dma_sync_single_for_cpu(dev: ab->dev, addr: desc_paddr,
653 size: (srng->entry_size * sizeof(u32)),
654 dir: DMA_FROM_DEVICE);
655 prefetch(desc);
656 }
657}
658
659u32 *ath11k_hal_srng_dst_get_next_entry(struct ath11k_base *ab,
660 struct hal_srng *srng)
661{
662 u32 *desc;
663
664 lockdep_assert_held(&srng->lock);
665
666 if (srng->u.dst_ring.tp == srng->u.dst_ring.cached_hp)
667 return NULL;
668
669 desc = srng->ring_base_vaddr + srng->u.dst_ring.tp;
670
671 srng->u.dst_ring.tp += srng->entry_size;
672
673 /* wrap around to start of ring*/
674 if (srng->u.dst_ring.tp == srng->ring_size)
675 srng->u.dst_ring.tp = 0;
676
677 /* Try to prefetch the next descriptor in the ring */
678 if (srng->flags & HAL_SRNG_FLAGS_CACHED)
679 ath11k_hal_srng_prefetch_desc(ab, srng);
680
681 return desc;
682}
683
684int ath11k_hal_srng_dst_num_free(struct ath11k_base *ab, struct hal_srng *srng,
685 bool sync_hw_ptr)
686{
687 u32 tp, hp;
688
689 lockdep_assert_held(&srng->lock);
690
691 tp = srng->u.dst_ring.tp;
692
693 if (sync_hw_ptr) {
694 hp = *srng->u.dst_ring.hp_addr;
695 srng->u.dst_ring.cached_hp = hp;
696 } else {
697 hp = srng->u.dst_ring.cached_hp;
698 }
699
700 if (hp >= tp)
701 return (hp - tp) / srng->entry_size;
702 else
703 return (srng->ring_size - tp + hp) / srng->entry_size;
704}
705
706/* Returns number of available entries in src ring */
707int ath11k_hal_srng_src_num_free(struct ath11k_base *ab, struct hal_srng *srng,
708 bool sync_hw_ptr)
709{
710 u32 tp, hp;
711
712 lockdep_assert_held(&srng->lock);
713
714 hp = srng->u.src_ring.hp;
715
716 if (sync_hw_ptr) {
717 tp = *srng->u.src_ring.tp_addr;
718 srng->u.src_ring.cached_tp = tp;
719 } else {
720 tp = srng->u.src_ring.cached_tp;
721 }
722
723 if (tp > hp)
724 return ((tp - hp) / srng->entry_size) - 1;
725 else
726 return ((srng->ring_size - hp + tp) / srng->entry_size) - 1;
727}
728
729u32 *ath11k_hal_srng_src_get_next_entry(struct ath11k_base *ab,
730 struct hal_srng *srng)
731{
732 u32 *desc;
733 u32 next_hp;
734
735 lockdep_assert_held(&srng->lock);
736
737 /* TODO: Using % is expensive, but we have to do this since size of some
738 * SRNG rings is not power of 2 (due to descriptor sizes). Need to see
739 * if separate function is defined for rings having power of 2 ring size
740 * (TCL2SW, REO2SW, SW2RXDMA and CE rings) so that we can avoid the
741 * overhead of % by using mask (with &).
742 */
743 next_hp = (srng->u.src_ring.hp + srng->entry_size) % srng->ring_size;
744
745 if (next_hp == srng->u.src_ring.cached_tp)
746 return NULL;
747
748 desc = srng->ring_base_vaddr + srng->u.src_ring.hp;
749 srng->u.src_ring.hp = next_hp;
750
751 /* TODO: Reap functionality is not used by all rings. If particular
752 * ring does not use reap functionality, we need not update reap_hp
753 * with next_hp pointer. Need to make sure a separate function is used
754 * before doing any optimization by removing below code updating
755 * reap_hp.
756 */
757 srng->u.src_ring.reap_hp = next_hp;
758
759 return desc;
760}
761
762u32 *ath11k_hal_srng_src_reap_next(struct ath11k_base *ab,
763 struct hal_srng *srng)
764{
765 u32 *desc;
766 u32 next_reap_hp;
767
768 lockdep_assert_held(&srng->lock);
769
770 next_reap_hp = (srng->u.src_ring.reap_hp + srng->entry_size) %
771 srng->ring_size;
772
773 if (next_reap_hp == srng->u.src_ring.cached_tp)
774 return NULL;
775
776 desc = srng->ring_base_vaddr + next_reap_hp;
777 srng->u.src_ring.reap_hp = next_reap_hp;
778
779 return desc;
780}
781
782u32 *ath11k_hal_srng_src_get_next_reaped(struct ath11k_base *ab,
783 struct hal_srng *srng)
784{
785 u32 *desc;
786
787 lockdep_assert_held(&srng->lock);
788
789 if (srng->u.src_ring.hp == srng->u.src_ring.reap_hp)
790 return NULL;
791
792 desc = srng->ring_base_vaddr + srng->u.src_ring.hp;
793 srng->u.src_ring.hp = (srng->u.src_ring.hp + srng->entry_size) %
794 srng->ring_size;
795
796 return desc;
797}
798
799u32 *ath11k_hal_srng_src_peek(struct ath11k_base *ab, struct hal_srng *srng)
800{
801 lockdep_assert_held(&srng->lock);
802
803 if (((srng->u.src_ring.hp + srng->entry_size) % srng->ring_size) ==
804 srng->u.src_ring.cached_tp)
805 return NULL;
806
807 return srng->ring_base_vaddr + srng->u.src_ring.hp;
808}
809
810void ath11k_hal_srng_access_begin(struct ath11k_base *ab, struct hal_srng *srng)
811{
812 lockdep_assert_held(&srng->lock);
813
814 if (srng->ring_dir == HAL_SRNG_DIR_SRC) {
815 srng->u.src_ring.cached_tp =
816 *(volatile u32 *)srng->u.src_ring.tp_addr;
817 } else {
818 srng->u.dst_ring.cached_hp = *srng->u.dst_ring.hp_addr;
819
820 /* Try to prefetch the next descriptor in the ring */
821 if (srng->flags & HAL_SRNG_FLAGS_CACHED)
822 ath11k_hal_srng_prefetch_desc(ab, srng);
823 }
824}
825
826/* Update cached ring head/tail pointers to HW. ath11k_hal_srng_access_begin()
827 * should have been called before this.
828 */
829void ath11k_hal_srng_access_end(struct ath11k_base *ab, struct hal_srng *srng)
830{
831 lockdep_assert_held(&srng->lock);
832
833 /* TODO: See if we need a write memory barrier here */
834 if (srng->flags & HAL_SRNG_FLAGS_LMAC_RING) {
835 /* For LMAC rings, ring pointer updates are done through FW and
836 * hence written to a shared memory location that is read by FW
837 */
838 if (srng->ring_dir == HAL_SRNG_DIR_SRC) {
839 srng->u.src_ring.last_tp =
840 *(volatile u32 *)srng->u.src_ring.tp_addr;
841 *srng->u.src_ring.hp_addr = srng->u.src_ring.hp;
842 } else {
843 srng->u.dst_ring.last_hp = *srng->u.dst_ring.hp_addr;
844 *srng->u.dst_ring.tp_addr = srng->u.dst_ring.tp;
845 }
846 } else {
847 if (srng->ring_dir == HAL_SRNG_DIR_SRC) {
848 srng->u.src_ring.last_tp =
849 *(volatile u32 *)srng->u.src_ring.tp_addr;
850 ath11k_hif_write32(ab,
851 address: (unsigned long)srng->u.src_ring.hp_addr -
852 (unsigned long)ab->mem,
853 data: srng->u.src_ring.hp);
854 } else {
855 srng->u.dst_ring.last_hp = *srng->u.dst_ring.hp_addr;
856 ath11k_hif_write32(ab,
857 address: (unsigned long)srng->u.dst_ring.tp_addr -
858 (unsigned long)ab->mem,
859 data: srng->u.dst_ring.tp);
860 }
861 }
862
863 srng->timestamp = jiffies;
864}
865
866void ath11k_hal_setup_link_idle_list(struct ath11k_base *ab,
867 struct hal_wbm_idle_scatter_list *sbuf,
868 u32 nsbufs, u32 tot_link_desc,
869 u32 end_offset)
870{
871 struct ath11k_buffer_addr *link_addr;
872 int i;
873 u32 reg_scatter_buf_sz = HAL_WBM_IDLE_SCATTER_BUF_SIZE / 64;
874
875 link_addr = (void *)sbuf[0].vaddr + HAL_WBM_IDLE_SCATTER_BUF_SIZE;
876
877 for (i = 1; i < nsbufs; i++) {
878 link_addr->info0 = sbuf[i].paddr & HAL_ADDR_LSB_REG_MASK;
879 link_addr->info1 = FIELD_PREP(
880 HAL_WBM_SCATTERED_DESC_MSB_BASE_ADDR_39_32,
881 (u64)sbuf[i].paddr >> HAL_ADDR_MSB_REG_SHIFT) |
882 FIELD_PREP(
883 HAL_WBM_SCATTERED_DESC_MSB_BASE_ADDR_MATCH_TAG,
884 BASE_ADDR_MATCH_TAG_VAL);
885
886 link_addr = (void *)sbuf[i].vaddr +
887 HAL_WBM_IDLE_SCATTER_BUF_SIZE;
888 }
889
890 ath11k_hif_write32(ab,
891 HAL_SEQ_WCSS_UMAC_WBM_REG + HAL_WBM_R0_IDLE_LIST_CONTROL_ADDR,
892 FIELD_PREP(HAL_WBM_SCATTER_BUFFER_SIZE, reg_scatter_buf_sz) |
893 FIELD_PREP(HAL_WBM_LINK_DESC_IDLE_LIST_MODE, 0x1));
894 ath11k_hif_write32(ab,
895 HAL_SEQ_WCSS_UMAC_WBM_REG + HAL_WBM_R0_IDLE_LIST_SIZE_ADDR,
896 FIELD_PREP(HAL_WBM_SCATTER_RING_SIZE_OF_IDLE_LINK_DESC_LIST,
897 reg_scatter_buf_sz * nsbufs));
898 ath11k_hif_write32(ab,
899 HAL_SEQ_WCSS_UMAC_WBM_REG +
900 HAL_WBM_SCATTERED_RING_BASE_LSB,
901 FIELD_PREP(BUFFER_ADDR_INFO0_ADDR,
902 sbuf[0].paddr & HAL_ADDR_LSB_REG_MASK));
903 ath11k_hif_write32(ab,
904 HAL_SEQ_WCSS_UMAC_WBM_REG +
905 HAL_WBM_SCATTERED_RING_BASE_MSB,
906 FIELD_PREP(
907 HAL_WBM_SCATTERED_DESC_MSB_BASE_ADDR_39_32,
908 (u64)sbuf[0].paddr >> HAL_ADDR_MSB_REG_SHIFT) |
909 FIELD_PREP(
910 HAL_WBM_SCATTERED_DESC_MSB_BASE_ADDR_MATCH_TAG,
911 BASE_ADDR_MATCH_TAG_VAL));
912
913 /* Setup head and tail pointers for the idle list */
914 ath11k_hif_write32(ab,
915 HAL_SEQ_WCSS_UMAC_WBM_REG +
916 HAL_WBM_SCATTERED_DESC_PTR_HEAD_INFO_IX0,
917 FIELD_PREP(BUFFER_ADDR_INFO0_ADDR,
918 sbuf[nsbufs - 1].paddr));
919 ath11k_hif_write32(ab,
920 HAL_SEQ_WCSS_UMAC_WBM_REG +
921 HAL_WBM_SCATTERED_DESC_PTR_HEAD_INFO_IX1,
922 FIELD_PREP(
923 HAL_WBM_SCATTERED_DESC_MSB_BASE_ADDR_39_32,
924 ((u64)sbuf[nsbufs - 1].paddr >>
925 HAL_ADDR_MSB_REG_SHIFT)) |
926 FIELD_PREP(HAL_WBM_SCATTERED_DESC_HEAD_P_OFFSET_IX1,
927 (end_offset >> 2)));
928 ath11k_hif_write32(ab,
929 HAL_SEQ_WCSS_UMAC_WBM_REG +
930 HAL_WBM_SCATTERED_DESC_PTR_HEAD_INFO_IX0,
931 FIELD_PREP(BUFFER_ADDR_INFO0_ADDR,
932 sbuf[0].paddr));
933
934 ath11k_hif_write32(ab,
935 HAL_SEQ_WCSS_UMAC_WBM_REG +
936 HAL_WBM_SCATTERED_DESC_PTR_TAIL_INFO_IX0,
937 FIELD_PREP(BUFFER_ADDR_INFO0_ADDR,
938 sbuf[0].paddr));
939 ath11k_hif_write32(ab,
940 HAL_SEQ_WCSS_UMAC_WBM_REG +
941 HAL_WBM_SCATTERED_DESC_PTR_TAIL_INFO_IX1,
942 FIELD_PREP(
943 HAL_WBM_SCATTERED_DESC_MSB_BASE_ADDR_39_32,
944 ((u64)sbuf[0].paddr >> HAL_ADDR_MSB_REG_SHIFT)) |
945 FIELD_PREP(HAL_WBM_SCATTERED_DESC_TAIL_P_OFFSET_IX1,
946 0));
947 ath11k_hif_write32(ab,
948 HAL_SEQ_WCSS_UMAC_WBM_REG +
949 HAL_WBM_SCATTERED_DESC_PTR_HP_ADDR,
950 data: 2 * tot_link_desc);
951
952 /* Enable the SRNG */
953 ath11k_hif_write32(ab,
954 HAL_SEQ_WCSS_UMAC_WBM_REG +
955 HAL_WBM_IDLE_LINK_RING_MISC_ADDR(ab), data: 0x40);
956}
957
958int ath11k_hal_srng_setup(struct ath11k_base *ab, enum hal_ring_type type,
959 int ring_num, int mac_id,
960 struct hal_srng_params *params)
961{
962 struct ath11k_hal *hal = &ab->hal;
963 struct hal_srng_config *srng_config = &ab->hal.srng_config[type];
964 struct hal_srng *srng;
965 int ring_id;
966 u32 lmac_idx;
967 int i;
968 u32 reg_base;
969
970 ring_id = ath11k_hal_srng_get_ring_id(ab, type, ring_num, mac_id);
971 if (ring_id < 0)
972 return ring_id;
973
974 srng = &hal->srng_list[ring_id];
975
976 srng->ring_id = ring_id;
977 srng->ring_dir = srng_config->ring_dir;
978 srng->ring_base_paddr = params->ring_base_paddr;
979 srng->ring_base_vaddr = params->ring_base_vaddr;
980 srng->entry_size = srng_config->entry_size;
981 srng->num_entries = params->num_entries;
982 srng->ring_size = srng->entry_size * srng->num_entries;
983 srng->intr_batch_cntr_thres_entries =
984 params->intr_batch_cntr_thres_entries;
985 srng->intr_timer_thres_us = params->intr_timer_thres_us;
986 srng->flags = params->flags;
987 srng->msi_addr = params->msi_addr;
988 srng->msi_data = params->msi_data;
989 srng->initialized = 1;
990 spin_lock_init(&srng->lock);
991 lockdep_set_class(&srng->lock, hal->srng_key + ring_id);
992
993 for (i = 0; i < HAL_SRNG_NUM_REG_GRP; i++) {
994 srng->hwreg_base[i] = srng_config->reg_start[i] +
995 (ring_num * srng_config->reg_size[i]);
996 }
997
998 memset(srng->ring_base_vaddr, 0,
999 (srng->entry_size * srng->num_entries) << 2);
1000
1001 /* TODO: Add comments on these swap configurations */
1002 if (IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
1003 srng->flags |= HAL_SRNG_FLAGS_MSI_SWAP | HAL_SRNG_FLAGS_DATA_TLV_SWAP |
1004 HAL_SRNG_FLAGS_RING_PTR_SWAP;
1005
1006 reg_base = srng->hwreg_base[HAL_SRNG_REG_GRP_R2];
1007
1008 if (srng->ring_dir == HAL_SRNG_DIR_SRC) {
1009 srng->u.src_ring.hp = 0;
1010 srng->u.src_ring.cached_tp = 0;
1011 srng->u.src_ring.reap_hp = srng->ring_size - srng->entry_size;
1012 srng->u.src_ring.tp_addr = (void *)(hal->rdp.vaddr + ring_id);
1013 srng->u.src_ring.low_threshold = params->low_threshold *
1014 srng->entry_size;
1015 if (srng_config->lmac_ring) {
1016 lmac_idx = ring_id - HAL_SRNG_RING_ID_LMAC1_ID_START;
1017 srng->u.src_ring.hp_addr = (void *)(hal->wrp.vaddr +
1018 lmac_idx);
1019 srng->flags |= HAL_SRNG_FLAGS_LMAC_RING;
1020 } else {
1021 if (!ab->hw_params.supports_shadow_regs)
1022 srng->u.src_ring.hp_addr =
1023 (u32 *)((unsigned long)ab->mem + reg_base);
1024 else
1025 ath11k_dbg(ab, ATH11K_DBG_HAL,
1026 "type %d ring_num %d reg_base 0x%x shadow 0x%lx\n",
1027 type, ring_num,
1028 reg_base,
1029 (unsigned long)srng->u.src_ring.hp_addr -
1030 (unsigned long)ab->mem);
1031 }
1032 } else {
1033 /* During initialization loop count in all the descriptors
1034 * will be set to zero, and HW will set it to 1 on completing
1035 * descriptor update in first loop, and increments it by 1 on
1036 * subsequent loops (loop count wraps around after reaching
1037 * 0xffff). The 'loop_cnt' in SW ring state is the expected
1038 * loop count in descriptors updated by HW (to be processed
1039 * by SW).
1040 */
1041 srng->u.dst_ring.loop_cnt = 1;
1042 srng->u.dst_ring.tp = 0;
1043 srng->u.dst_ring.cached_hp = 0;
1044 srng->u.dst_ring.hp_addr = (void *)(hal->rdp.vaddr + ring_id);
1045 if (srng_config->lmac_ring) {
1046 /* For LMAC rings, tail pointer updates will be done
1047 * through FW by writing to a shared memory location
1048 */
1049 lmac_idx = ring_id - HAL_SRNG_RING_ID_LMAC1_ID_START;
1050 srng->u.dst_ring.tp_addr = (void *)(hal->wrp.vaddr +
1051 lmac_idx);
1052 srng->flags |= HAL_SRNG_FLAGS_LMAC_RING;
1053 } else {
1054 if (!ab->hw_params.supports_shadow_regs)
1055 srng->u.dst_ring.tp_addr =
1056 (u32 *)((unsigned long)ab->mem + reg_base +
1057 (HAL_REO1_RING_TP(ab) - HAL_REO1_RING_HP(ab)));
1058 else
1059 ath11k_dbg(ab, ATH11K_DBG_HAL,
1060 "type %d ring_num %d target_reg 0x%x shadow 0x%lx\n",
1061 type, ring_num,
1062 reg_base + (HAL_REO1_RING_TP(ab) -
1063 HAL_REO1_RING_HP(ab)),
1064 (unsigned long)srng->u.dst_ring.tp_addr -
1065 (unsigned long)ab->mem);
1066 }
1067 }
1068
1069 if (srng_config->lmac_ring)
1070 return ring_id;
1071
1072 ath11k_hal_srng_hw_init(ab, srng);
1073
1074 if (type == HAL_CE_DST) {
1075 srng->u.dst_ring.max_buffer_length = params->max_buffer_len;
1076 ath11k_hal_ce_dst_setup(ab, srng, ring_num);
1077 }
1078
1079 return ring_id;
1080}
1081
1082static void ath11k_hal_srng_update_hp_tp_addr(struct ath11k_base *ab,
1083 int shadow_cfg_idx,
1084 enum hal_ring_type ring_type,
1085 int ring_num)
1086{
1087 struct hal_srng *srng;
1088 struct ath11k_hal *hal = &ab->hal;
1089 int ring_id;
1090 struct hal_srng_config *srng_config = &hal->srng_config[ring_type];
1091
1092 ring_id = ath11k_hal_srng_get_ring_id(ab, type: ring_type, ring_num, mac_id: 0);
1093 if (ring_id < 0)
1094 return;
1095
1096 srng = &hal->srng_list[ring_id];
1097
1098 if (srng_config->ring_dir == HAL_SRNG_DIR_DST)
1099 srng->u.dst_ring.tp_addr = (u32 *)(HAL_SHADOW_REG(ab, shadow_cfg_idx) +
1100 (unsigned long)ab->mem);
1101 else
1102 srng->u.src_ring.hp_addr = (u32 *)(HAL_SHADOW_REG(ab, shadow_cfg_idx) +
1103 (unsigned long)ab->mem);
1104}
1105
1106int ath11k_hal_srng_update_shadow_config(struct ath11k_base *ab,
1107 enum hal_ring_type ring_type,
1108 int ring_num)
1109{
1110 struct ath11k_hal *hal = &ab->hal;
1111 struct hal_srng_config *srng_config = &hal->srng_config[ring_type];
1112 int shadow_cfg_idx = hal->num_shadow_reg_configured;
1113 u32 target_reg;
1114
1115 if (shadow_cfg_idx >= HAL_SHADOW_NUM_REGS)
1116 return -EINVAL;
1117
1118 hal->num_shadow_reg_configured++;
1119
1120 target_reg = srng_config->reg_start[HAL_HP_OFFSET_IN_REG_START];
1121 target_reg += srng_config->reg_size[HAL_HP_OFFSET_IN_REG_START] *
1122 ring_num;
1123
1124 /* For destination ring, shadow the TP */
1125 if (srng_config->ring_dir == HAL_SRNG_DIR_DST)
1126 target_reg += HAL_OFFSET_FROM_HP_TO_TP;
1127
1128 hal->shadow_reg_addr[shadow_cfg_idx] = target_reg;
1129
1130 /* update hp/tp addr to hal structure*/
1131 ath11k_hal_srng_update_hp_tp_addr(ab, shadow_cfg_idx, ring_type,
1132 ring_num);
1133
1134 ath11k_dbg(ab, ATH11K_DBG_HAL,
1135 "update shadow config target_reg %x shadow reg 0x%x shadow_idx 0x%x ring_type %d ring num %d",
1136 target_reg,
1137 HAL_SHADOW_REG(ab, shadow_cfg_idx),
1138 shadow_cfg_idx,
1139 ring_type, ring_num);
1140
1141 return 0;
1142}
1143
1144void ath11k_hal_srng_shadow_config(struct ath11k_base *ab)
1145{
1146 struct ath11k_hal *hal = &ab->hal;
1147 int ring_type, ring_num;
1148
1149 /* update all the non-CE srngs. */
1150 for (ring_type = 0; ring_type < HAL_MAX_RING_TYPES; ring_type++) {
1151 struct hal_srng_config *srng_config = &hal->srng_config[ring_type];
1152
1153 if (ring_type == HAL_CE_SRC ||
1154 ring_type == HAL_CE_DST ||
1155 ring_type == HAL_CE_DST_STATUS)
1156 continue;
1157
1158 if (srng_config->lmac_ring)
1159 continue;
1160
1161 for (ring_num = 0; ring_num < srng_config->max_rings; ring_num++)
1162 ath11k_hal_srng_update_shadow_config(ab, ring_type, ring_num);
1163 }
1164}
1165
1166void ath11k_hal_srng_get_shadow_config(struct ath11k_base *ab,
1167 u32 **cfg, u32 *len)
1168{
1169 struct ath11k_hal *hal = &ab->hal;
1170
1171 *len = hal->num_shadow_reg_configured;
1172 *cfg = hal->shadow_reg_addr;
1173}
1174
1175void ath11k_hal_srng_shadow_update_hp_tp(struct ath11k_base *ab,
1176 struct hal_srng *srng)
1177{
1178 lockdep_assert_held(&srng->lock);
1179
1180 /* check whether the ring is empty. Update the shadow
1181 * HP only when then ring isn't empty.
1182 */
1183 if (srng->ring_dir == HAL_SRNG_DIR_SRC &&
1184 *srng->u.src_ring.tp_addr != srng->u.src_ring.hp)
1185 ath11k_hal_srng_access_end(ab, srng);
1186}
1187
1188static int ath11k_hal_srng_create_config(struct ath11k_base *ab)
1189{
1190 struct ath11k_hal *hal = &ab->hal;
1191 struct hal_srng_config *s;
1192
1193 hal->srng_config = kmemdup(p: hw_srng_config_template,
1194 size: sizeof(hw_srng_config_template),
1195 GFP_KERNEL);
1196 if (!hal->srng_config)
1197 return -ENOMEM;
1198
1199 s = &hal->srng_config[HAL_REO_DST];
1200 s->reg_start[0] = HAL_SEQ_WCSS_UMAC_REO_REG + HAL_REO1_RING_BASE_LSB(ab);
1201 s->reg_start[1] = HAL_SEQ_WCSS_UMAC_REO_REG + HAL_REO1_RING_HP(ab);
1202 s->reg_size[0] = HAL_REO2_RING_BASE_LSB(ab) - HAL_REO1_RING_BASE_LSB(ab);
1203 s->reg_size[1] = HAL_REO2_RING_HP(ab) - HAL_REO1_RING_HP(ab);
1204
1205 s = &hal->srng_config[HAL_REO_EXCEPTION];
1206 s->reg_start[0] = HAL_SEQ_WCSS_UMAC_REO_REG + HAL_REO_TCL_RING_BASE_LSB(ab);
1207 s->reg_start[1] = HAL_SEQ_WCSS_UMAC_REO_REG + HAL_REO_TCL_RING_HP(ab);
1208
1209 s = &hal->srng_config[HAL_REO_REINJECT];
1210 s->reg_start[0] = HAL_SEQ_WCSS_UMAC_REO_REG + HAL_SW2REO_RING_BASE_LSB(ab);
1211 s->reg_start[1] = HAL_SEQ_WCSS_UMAC_REO_REG + HAL_SW2REO_RING_HP(ab);
1212
1213 s = &hal->srng_config[HAL_REO_CMD];
1214 s->reg_start[0] = HAL_SEQ_WCSS_UMAC_REO_REG + HAL_REO_CMD_RING_BASE_LSB(ab);
1215 s->reg_start[1] = HAL_SEQ_WCSS_UMAC_REO_REG + HAL_REO_CMD_HP(ab);
1216
1217 s = &hal->srng_config[HAL_REO_STATUS];
1218 s->reg_start[0] = HAL_SEQ_WCSS_UMAC_REO_REG + HAL_REO_STATUS_RING_BASE_LSB(ab);
1219 s->reg_start[1] = HAL_SEQ_WCSS_UMAC_REO_REG + HAL_REO_STATUS_HP(ab);
1220
1221 s = &hal->srng_config[HAL_TCL_DATA];
1222 s->reg_start[0] = HAL_SEQ_WCSS_UMAC_TCL_REG + HAL_TCL1_RING_BASE_LSB(ab);
1223 s->reg_start[1] = HAL_SEQ_WCSS_UMAC_TCL_REG + HAL_TCL1_RING_HP;
1224 s->reg_size[0] = HAL_TCL2_RING_BASE_LSB(ab) - HAL_TCL1_RING_BASE_LSB(ab);
1225 s->reg_size[1] = HAL_TCL2_RING_HP - HAL_TCL1_RING_HP;
1226
1227 s = &hal->srng_config[HAL_TCL_CMD];
1228 s->reg_start[0] = HAL_SEQ_WCSS_UMAC_TCL_REG + HAL_TCL_RING_BASE_LSB(ab);
1229 s->reg_start[1] = HAL_SEQ_WCSS_UMAC_TCL_REG + HAL_TCL_RING_HP;
1230
1231 s = &hal->srng_config[HAL_TCL_STATUS];
1232 s->reg_start[0] = HAL_SEQ_WCSS_UMAC_TCL_REG + HAL_TCL_STATUS_RING_BASE_LSB(ab);
1233 s->reg_start[1] = HAL_SEQ_WCSS_UMAC_TCL_REG + HAL_TCL_STATUS_RING_HP;
1234
1235 s = &hal->srng_config[HAL_CE_SRC];
1236 s->reg_start[0] = HAL_SEQ_WCSS_UMAC_CE0_SRC_REG(ab) + HAL_CE_DST_RING_BASE_LSB +
1237 ATH11K_CE_OFFSET(ab);
1238 s->reg_start[1] = HAL_SEQ_WCSS_UMAC_CE0_SRC_REG(ab) + HAL_CE_DST_RING_HP +
1239 ATH11K_CE_OFFSET(ab);
1240 s->reg_size[0] = HAL_SEQ_WCSS_UMAC_CE1_SRC_REG(ab) -
1241 HAL_SEQ_WCSS_UMAC_CE0_SRC_REG(ab);
1242 s->reg_size[1] = HAL_SEQ_WCSS_UMAC_CE1_SRC_REG(ab) -
1243 HAL_SEQ_WCSS_UMAC_CE0_SRC_REG(ab);
1244
1245 s = &hal->srng_config[HAL_CE_DST];
1246 s->reg_start[0] = HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab) + HAL_CE_DST_RING_BASE_LSB +
1247 ATH11K_CE_OFFSET(ab);
1248 s->reg_start[1] = HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab) + HAL_CE_DST_RING_HP +
1249 ATH11K_CE_OFFSET(ab);
1250 s->reg_size[0] = HAL_SEQ_WCSS_UMAC_CE1_DST_REG(ab) -
1251 HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab);
1252 s->reg_size[1] = HAL_SEQ_WCSS_UMAC_CE1_DST_REG(ab) -
1253 HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab);
1254
1255 s = &hal->srng_config[HAL_CE_DST_STATUS];
1256 s->reg_start[0] = HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab) +
1257 HAL_CE_DST_STATUS_RING_BASE_LSB + ATH11K_CE_OFFSET(ab);
1258 s->reg_start[1] = HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab) + HAL_CE_DST_STATUS_RING_HP +
1259 ATH11K_CE_OFFSET(ab);
1260 s->reg_size[0] = HAL_SEQ_WCSS_UMAC_CE1_DST_REG(ab) -
1261 HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab);
1262 s->reg_size[1] = HAL_SEQ_WCSS_UMAC_CE1_DST_REG(ab) -
1263 HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab);
1264
1265 s = &hal->srng_config[HAL_WBM_IDLE_LINK];
1266 s->reg_start[0] = HAL_SEQ_WCSS_UMAC_WBM_REG + HAL_WBM_IDLE_LINK_RING_BASE_LSB(ab);
1267 s->reg_start[1] = HAL_SEQ_WCSS_UMAC_WBM_REG + HAL_WBM_IDLE_LINK_RING_HP;
1268
1269 s = &hal->srng_config[HAL_SW2WBM_RELEASE];
1270 s->reg_start[0] = HAL_SEQ_WCSS_UMAC_WBM_REG + HAL_WBM_RELEASE_RING_BASE_LSB(ab);
1271 s->reg_start[1] = HAL_SEQ_WCSS_UMAC_WBM_REG + HAL_WBM_RELEASE_RING_HP;
1272
1273 s = &hal->srng_config[HAL_WBM2SW_RELEASE];
1274 s->reg_start[0] = HAL_SEQ_WCSS_UMAC_WBM_REG + HAL_WBM0_RELEASE_RING_BASE_LSB(ab);
1275 s->reg_start[1] = HAL_SEQ_WCSS_UMAC_WBM_REG + HAL_WBM0_RELEASE_RING_HP;
1276 s->reg_size[0] = HAL_WBM1_RELEASE_RING_BASE_LSB(ab) -
1277 HAL_WBM0_RELEASE_RING_BASE_LSB(ab);
1278 s->reg_size[1] = HAL_WBM1_RELEASE_RING_HP - HAL_WBM0_RELEASE_RING_HP;
1279
1280 return 0;
1281}
1282
1283static void ath11k_hal_register_srng_key(struct ath11k_base *ab)
1284{
1285 struct ath11k_hal *hal = &ab->hal;
1286 u32 ring_id;
1287
1288 for (ring_id = 0; ring_id < HAL_SRNG_RING_ID_MAX; ring_id++)
1289 lockdep_register_key(key: hal->srng_key + ring_id);
1290}
1291
1292static void ath11k_hal_unregister_srng_key(struct ath11k_base *ab)
1293{
1294 struct ath11k_hal *hal = &ab->hal;
1295 u32 ring_id;
1296
1297 for (ring_id = 0; ring_id < HAL_SRNG_RING_ID_MAX; ring_id++)
1298 lockdep_unregister_key(key: hal->srng_key + ring_id);
1299}
1300
1301int ath11k_hal_srng_init(struct ath11k_base *ab)
1302{
1303 struct ath11k_hal *hal = &ab->hal;
1304 int ret;
1305
1306 memset(hal, 0, sizeof(*hal));
1307
1308 ret = ath11k_hal_srng_create_config(ab);
1309 if (ret)
1310 goto err_hal;
1311
1312 ret = ath11k_hal_alloc_cont_rdp(ab);
1313 if (ret)
1314 goto err_hal;
1315
1316 ret = ath11k_hal_alloc_cont_wrp(ab);
1317 if (ret)
1318 goto err_free_cont_rdp;
1319
1320 ath11k_hal_register_srng_key(ab);
1321
1322 return 0;
1323
1324err_free_cont_rdp:
1325 ath11k_hal_free_cont_rdp(ab);
1326
1327err_hal:
1328 return ret;
1329}
1330EXPORT_SYMBOL(ath11k_hal_srng_init);
1331
1332void ath11k_hal_srng_deinit(struct ath11k_base *ab)
1333{
1334 struct ath11k_hal *hal = &ab->hal;
1335
1336 ath11k_hal_unregister_srng_key(ab);
1337 ath11k_hal_free_cont_rdp(ab);
1338 ath11k_hal_free_cont_wrp(ab);
1339 kfree(objp: hal->srng_config);
1340}
1341EXPORT_SYMBOL(ath11k_hal_srng_deinit);
1342
1343void ath11k_hal_dump_srng_stats(struct ath11k_base *ab)
1344{
1345 struct hal_srng *srng;
1346 struct ath11k_ext_irq_grp *irq_grp;
1347 struct ath11k_ce_pipe *ce_pipe;
1348 int i;
1349
1350 ath11k_err(ab, fmt: "Last interrupt received for each CE:\n");
1351 for (i = 0; i < ab->hw_params.ce_count; i++) {
1352 ce_pipe = &ab->ce.ce_pipe[i];
1353
1354 if (ath11k_ce_get_attr_flags(ab, ce_id: i) & CE_ATTR_DIS_INTR)
1355 continue;
1356
1357 ath11k_err(ab, fmt: "CE_id %d pipe_num %d %ums before\n",
1358 i, ce_pipe->pipe_num,
1359 jiffies_to_msecs(j: jiffies - ce_pipe->timestamp));
1360 }
1361
1362 ath11k_err(ab, fmt: "\nLast interrupt received for each group:\n");
1363 for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
1364 irq_grp = &ab->ext_irq_grp[i];
1365 ath11k_err(ab, fmt: "group_id %d %ums before\n",
1366 irq_grp->grp_id,
1367 jiffies_to_msecs(j: jiffies - irq_grp->timestamp));
1368 }
1369
1370 for (i = 0; i < HAL_SRNG_RING_ID_MAX; i++) {
1371 srng = &ab->hal.srng_list[i];
1372
1373 if (!srng->initialized)
1374 continue;
1375
1376 if (srng->ring_dir == HAL_SRNG_DIR_SRC)
1377 ath11k_err(ab,
1378 fmt: "src srng id %u hp %u, reap_hp %u, cur tp %u, cached tp %u last tp %u napi processed before %ums\n",
1379 srng->ring_id, srng->u.src_ring.hp,
1380 srng->u.src_ring.reap_hp,
1381 *srng->u.src_ring.tp_addr, srng->u.src_ring.cached_tp,
1382 srng->u.src_ring.last_tp,
1383 jiffies_to_msecs(j: jiffies - srng->timestamp));
1384 else if (srng->ring_dir == HAL_SRNG_DIR_DST)
1385 ath11k_err(ab,
1386 fmt: "dst srng id %u tp %u, cur hp %u, cached hp %u last hp %u napi processed before %ums\n",
1387 srng->ring_id, srng->u.dst_ring.tp,
1388 *srng->u.dst_ring.hp_addr,
1389 srng->u.dst_ring.cached_hp,
1390 srng->u.dst_ring.last_hp,
1391 jiffies_to_msecs(j: jiffies - srng->timestamp));
1392 }
1393}
1394

source code of linux/drivers/net/wireless/ath/ath11k/hal.c