GNU Linux-libre 6.8.9-gnu
[releases.git] / drivers / net / wwan / t7xx / t7xx_dpmaif.c
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Copyright (c) 2021, MediaTek Inc.
4  * Copyright (c) 2021-2022, Intel Corporation.
5  *
6  * Authors:
7  *  Amir Hanania <amir.hanania@intel.com>
8  *  Haijun Liu <haijun.liu@mediatek.com>
9  *  Moises Veleta <moises.veleta@intel.com>
10  *  Ricardo Martinez <ricardo.martinez@linux.intel.com>
11  *
12  * Contributors:
13  *  Andy Shevchenko <andriy.shevchenko@linux.intel.com>
14  *  Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.com>
15  *  Eliot Lee <eliot.lee@intel.com>
16  *  Sreehari Kancharla <sreehari.kancharla@intel.com>
17  */
18
19 #include <linux/bits.h>
20 #include <linux/bitfield.h>
21 #include <linux/bitops.h>
22 #include <linux/delay.h>
23 #include <linux/dev_printk.h>
24 #include <linux/io.h>
25 #include <linux/iopoll.h>
26 #include <linux/types.h>
27
28 #include "t7xx_dpmaif.h"
29 #include "t7xx_reg.h"
30
31 #define ioread32_poll_timeout_atomic(addr, val, cond, delay_us, timeout_us) \
32         readx_poll_timeout_atomic(ioread32, addr, val, cond, delay_us, timeout_us)
33
34 static int t7xx_dpmaif_init_intr(struct dpmaif_hw_info *hw_info)
35 {
36         struct dpmaif_isr_en_mask *isr_en_msk = &hw_info->isr_en_mask;
37         u32 value, ul_intr_enable, dl_intr_enable;
38         int ret;
39
40         ul_intr_enable = DP_UL_INT_ERR_MSK | DP_UL_INT_QDONE_MSK;
41         isr_en_msk->ap_ul_l2intr_en_msk = ul_intr_enable;
42         iowrite32(DPMAIF_AP_ALL_L2TISAR0_MASK, hw_info->pcie_base + DPMAIF_AP_L2TISAR0);
43
44         /* Set interrupt enable mask */
45         iowrite32(ul_intr_enable, hw_info->pcie_base + DPMAIF_AO_UL_AP_L2TIMCR0);
46         iowrite32(~ul_intr_enable, hw_info->pcie_base + DPMAIF_AO_UL_AP_L2TIMSR0);
47
48         /* Check mask status */
49         ret = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_AO_UL_AP_L2TIMR0,
50                                            value, (value & ul_intr_enable) != ul_intr_enable, 0,
51                                            DPMAIF_CHECK_INIT_TIMEOUT_US);
52         if (ret)
53                 return ret;
54
55         dl_intr_enable = DP_DL_INT_PITCNT_LEN_ERR | DP_DL_INT_BATCNT_LEN_ERR;
56         isr_en_msk->ap_dl_l2intr_err_en_msk = dl_intr_enable;
57         ul_intr_enable = DPMAIF_DL_INT_DLQ0_QDONE | DPMAIF_DL_INT_DLQ0_PITCNT_LEN |
58                     DPMAIF_DL_INT_DLQ1_QDONE | DPMAIF_DL_INT_DLQ1_PITCNT_LEN;
59         isr_en_msk->ap_ul_l2intr_en_msk = ul_intr_enable;
60         iowrite32(DPMAIF_AP_APDL_ALL_L2TISAR0_MASK, hw_info->pcie_base + DPMAIF_AP_APDL_L2TISAR0);
61
62         /* Set DL ISR PD enable mask */
63         iowrite32(~ul_intr_enable, hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMSR0);
64         ret = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMR0,
65                                            value, (value & ul_intr_enable) != ul_intr_enable, 0,
66                                            DPMAIF_CHECK_INIT_TIMEOUT_US);
67         if (ret)
68                 return ret;
69
70         isr_en_msk->ap_udl_ip_busy_en_msk = DPMAIF_UDL_IP_BUSY;
71         iowrite32(DPMAIF_AP_IP_BUSY_MASK, hw_info->pcie_base + DPMAIF_AP_IP_BUSY);
72         iowrite32(isr_en_msk->ap_udl_ip_busy_en_msk,
73                   hw_info->pcie_base + DPMAIF_AO_AP_DLUL_IP_BUSY_MASK);
74         value = ioread32(hw_info->pcie_base + DPMAIF_AO_UL_AP_L1TIMR0);
75         value |= DPMAIF_DL_INT_Q2APTOP | DPMAIF_DL_INT_Q2TOQ1;
76         iowrite32(value, hw_info->pcie_base + DPMAIF_AO_UL_AP_L1TIMR0);
77         iowrite32(DPMA_HPC_ALL_INT_MASK, hw_info->pcie_base + DPMAIF_HPC_INTR_MASK);
78
79         return 0;
80 }
81
82 static void t7xx_dpmaif_mask_ulq_intr(struct dpmaif_hw_info *hw_info, unsigned int q_num)
83 {
84         struct dpmaif_isr_en_mask *isr_en_msk;
85         u32 value, ul_int_que_done;
86         int ret;
87
88         isr_en_msk = &hw_info->isr_en_mask;
89         ul_int_que_done = BIT(q_num + DP_UL_INT_DONE_OFFSET) & DP_UL_INT_QDONE_MSK;
90         isr_en_msk->ap_ul_l2intr_en_msk &= ~ul_int_que_done;
91         iowrite32(ul_int_que_done, hw_info->pcie_base + DPMAIF_AO_UL_AP_L2TIMSR0);
92
93         ret = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_AO_UL_AP_L2TIMR0,
94                                            value, (value & ul_int_que_done) == ul_int_que_done, 0,
95                                            DPMAIF_CHECK_TIMEOUT_US);
96         if (ret)
97                 dev_err(hw_info->dev,
98                         "Could not mask the UL interrupt. DPMAIF_AO_UL_AP_L2TIMR0 is 0x%x\n",
99                         value);
100 }
101
102 void t7xx_dpmaif_unmask_ulq_intr(struct dpmaif_hw_info *hw_info, unsigned int q_num)
103 {
104         struct dpmaif_isr_en_mask *isr_en_msk;
105         u32 value, ul_int_que_done;
106         int ret;
107
108         isr_en_msk = &hw_info->isr_en_mask;
109         ul_int_que_done = BIT(q_num + DP_UL_INT_DONE_OFFSET) & DP_UL_INT_QDONE_MSK;
110         isr_en_msk->ap_ul_l2intr_en_msk |= ul_int_que_done;
111         iowrite32(ul_int_que_done, hw_info->pcie_base + DPMAIF_AO_UL_AP_L2TIMCR0);
112
113         ret = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_AO_UL_AP_L2TIMR0,
114                                            value, (value & ul_int_que_done) != ul_int_que_done, 0,
115                                            DPMAIF_CHECK_TIMEOUT_US);
116         if (ret)
117                 dev_err(hw_info->dev,
118                         "Could not unmask the UL interrupt. DPMAIF_AO_UL_AP_L2TIMR0 is 0x%x\n",
119                         value);
120 }
121
122 void t7xx_dpmaif_dl_unmask_batcnt_len_err_intr(struct dpmaif_hw_info *hw_info)
123 {
124         hw_info->isr_en_mask.ap_dl_l2intr_en_msk |= DP_DL_INT_BATCNT_LEN_ERR;
125         iowrite32(DP_DL_INT_BATCNT_LEN_ERR, hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMCR0);
126 }
127
128 void t7xx_dpmaif_dl_unmask_pitcnt_len_err_intr(struct dpmaif_hw_info *hw_info)
129 {
130         hw_info->isr_en_mask.ap_dl_l2intr_en_msk |= DP_DL_INT_PITCNT_LEN_ERR;
131         iowrite32(DP_DL_INT_PITCNT_LEN_ERR, hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMCR0);
132 }
133
134 static u32 t7xx_update_dlq_intr(struct dpmaif_hw_info *hw_info, u32 q_done)
135 {
136         u32 value;
137
138         value = ioread32(hw_info->pcie_base + DPMAIF_AO_UL_AP_L2TIMR0);
139         iowrite32(q_done, hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMSR0);
140         return value;
141 }
142
143 static int t7xx_mask_dlq_intr(struct dpmaif_hw_info *hw_info, unsigned int qno)
144 {
145         u32 value, q_done;
146         int ret;
147
148         q_done = qno == DPF_RX_QNO0 ? DPMAIF_DL_INT_DLQ0_QDONE : DPMAIF_DL_INT_DLQ1_QDONE;
149         iowrite32(q_done, hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMSR0);
150
151         ret = read_poll_timeout_atomic(t7xx_update_dlq_intr, value, value & q_done,
152                                        0, DPMAIF_CHECK_TIMEOUT_US, false, hw_info, q_done);
153         if (ret) {
154                 dev_err(hw_info->dev,
155                         "Could not mask the DL interrupt. DPMAIF_AO_UL_AP_L2TIMR0 is 0x%x\n",
156                         value);
157                 return -ETIMEDOUT;
158         }
159
160         hw_info->isr_en_mask.ap_dl_l2intr_en_msk &= ~q_done;
161         return 0;
162 }
163
164 void t7xx_dpmaif_dlq_unmask_rx_done(struct dpmaif_hw_info *hw_info, unsigned int qno)
165 {
166         u32 mask;
167
168         mask = qno == DPF_RX_QNO0 ? DPMAIF_DL_INT_DLQ0_QDONE : DPMAIF_DL_INT_DLQ1_QDONE;
169         iowrite32(mask, hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMCR0);
170         hw_info->isr_en_mask.ap_dl_l2intr_en_msk |= mask;
171 }
172
173 void t7xx_dpmaif_clr_ip_busy_sts(struct dpmaif_hw_info *hw_info)
174 {
175         u32 ip_busy_sts;
176
177         ip_busy_sts = ioread32(hw_info->pcie_base + DPMAIF_AP_IP_BUSY);
178         iowrite32(ip_busy_sts, hw_info->pcie_base + DPMAIF_AP_IP_BUSY);
179 }
180
181 static void t7xx_dpmaif_dlq_mask_rx_pitcnt_len_err_intr(struct dpmaif_hw_info *hw_info,
182                                                         unsigned int qno)
183 {
184         if (qno == DPF_RX_QNO0)
185                 iowrite32(DPMAIF_DL_INT_DLQ0_PITCNT_LEN,
186                           hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMSR0);
187         else
188                 iowrite32(DPMAIF_DL_INT_DLQ1_PITCNT_LEN,
189                           hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMSR0);
190 }
191
192 void t7xx_dpmaif_dlq_unmask_pitcnt_len_err_intr(struct dpmaif_hw_info *hw_info,
193                                                 unsigned int qno)
194 {
195         if (qno == DPF_RX_QNO0)
196                 iowrite32(DPMAIF_DL_INT_DLQ0_PITCNT_LEN,
197                           hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMCR0);
198         else
199                 iowrite32(DPMAIF_DL_INT_DLQ1_PITCNT_LEN,
200                           hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMCR0);
201 }
202
203 void t7xx_dpmaif_ul_clr_all_intr(struct dpmaif_hw_info *hw_info)
204 {
205         iowrite32(DPMAIF_AP_ALL_L2TISAR0_MASK, hw_info->pcie_base + DPMAIF_AP_L2TISAR0);
206 }
207
208 void t7xx_dpmaif_dl_clr_all_intr(struct dpmaif_hw_info *hw_info)
209 {
210         iowrite32(DPMAIF_AP_APDL_ALL_L2TISAR0_MASK, hw_info->pcie_base + DPMAIF_AP_APDL_L2TISAR0);
211 }
212
213 static void t7xx_dpmaif_set_intr_para(struct dpmaif_hw_intr_st_para *para,
214                                       enum dpmaif_hw_intr_type intr_type, unsigned int intr_queue)
215 {
216         para->intr_types[para->intr_cnt] = intr_type;
217         para->intr_queues[para->intr_cnt] = intr_queue;
218         para->intr_cnt++;
219 }
220
221 /* The para->intr_cnt counter is set to zero before this function is called.
222  * It does not check for overflow as there is no risk of overflowing intr_types or intr_queues.
223  */
224 static void t7xx_dpmaif_hw_check_tx_intr(struct dpmaif_hw_info *hw_info,
225                                          unsigned int intr_status,
226                                          struct dpmaif_hw_intr_st_para *para)
227 {
228         unsigned long value;
229
230         value = FIELD_GET(DP_UL_INT_QDONE_MSK, intr_status);
231         if (value) {
232                 unsigned int index;
233
234                 t7xx_dpmaif_set_intr_para(para, DPF_INTR_UL_DONE, value);
235
236                 for_each_set_bit(index, &value, DPMAIF_TXQ_NUM)
237                         t7xx_dpmaif_mask_ulq_intr(hw_info, index);
238         }
239
240         value = FIELD_GET(DP_UL_INT_EMPTY_MSK, intr_status);
241         if (value)
242                 t7xx_dpmaif_set_intr_para(para, DPF_INTR_UL_DRB_EMPTY, value);
243
244         value = FIELD_GET(DP_UL_INT_MD_NOTREADY_MSK, intr_status);
245         if (value)
246                 t7xx_dpmaif_set_intr_para(para, DPF_INTR_UL_MD_NOTREADY, value);
247
248         value = FIELD_GET(DP_UL_INT_MD_PWR_NOTREADY_MSK, intr_status);
249         if (value)
250                 t7xx_dpmaif_set_intr_para(para, DPF_INTR_UL_MD_PWR_NOTREADY, value);
251
252         value = FIELD_GET(DP_UL_INT_ERR_MSK, intr_status);
253         if (value)
254                 t7xx_dpmaif_set_intr_para(para, DPF_INTR_UL_LEN_ERR, value);
255
256         /* Clear interrupt status */
257         iowrite32(intr_status, hw_info->pcie_base + DPMAIF_AP_L2TISAR0);
258 }
259
260 /* The para->intr_cnt counter is set to zero before this function is called.
261  * It does not check for overflow as there is no risk of overflowing intr_types or intr_queues.
262  */
263 static void t7xx_dpmaif_hw_check_rx_intr(struct dpmaif_hw_info *hw_info,
264                                          unsigned int intr_status,
265                                          struct dpmaif_hw_intr_st_para *para, int qno)
266 {
267         if (qno == DPF_RX_QNO_DFT) {
268                 if (intr_status & DP_DL_INT_SKB_LEN_ERR)
269                         t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_SKB_LEN_ERR, DPF_RX_QNO_DFT);
270
271                 if (intr_status & DP_DL_INT_BATCNT_LEN_ERR) {
272                         t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_BATCNT_LEN_ERR, DPF_RX_QNO_DFT);
273                         hw_info->isr_en_mask.ap_dl_l2intr_en_msk &= ~DP_DL_INT_BATCNT_LEN_ERR;
274                         iowrite32(DP_DL_INT_BATCNT_LEN_ERR,
275                                   hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMSR0);
276                 }
277
278                 if (intr_status & DP_DL_INT_PITCNT_LEN_ERR) {
279                         t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_PITCNT_LEN_ERR, DPF_RX_QNO_DFT);
280                         hw_info->isr_en_mask.ap_dl_l2intr_en_msk &= ~DP_DL_INT_PITCNT_LEN_ERR;
281                         iowrite32(DP_DL_INT_PITCNT_LEN_ERR,
282                                   hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMSR0);
283                 }
284
285                 if (intr_status & DP_DL_INT_PKT_EMPTY_MSK)
286                         t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_PKT_EMPTY_SET, DPF_RX_QNO_DFT);
287
288                 if (intr_status & DP_DL_INT_FRG_EMPTY_MSK)
289                         t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_FRG_EMPTY_SET, DPF_RX_QNO_DFT);
290
291                 if (intr_status & DP_DL_INT_MTU_ERR_MSK)
292                         t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_MTU_ERR, DPF_RX_QNO_DFT);
293
294                 if (intr_status & DP_DL_INT_FRG_LEN_ERR_MSK)
295                         t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_FRGCNT_LEN_ERR, DPF_RX_QNO_DFT);
296
297                 if (intr_status & DP_DL_INT_Q0_PITCNT_LEN_ERR) {
298                         t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_Q0_PITCNT_LEN_ERR, BIT(qno));
299                         t7xx_dpmaif_dlq_mask_rx_pitcnt_len_err_intr(hw_info, qno);
300                 }
301
302                 if (intr_status & DP_DL_INT_HPC_ENT_TYPE_ERR)
303                         t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_HPC_ENT_TYPE_ERR,
304                                                   DPF_RX_QNO_DFT);
305
306                 if (intr_status & DP_DL_INT_Q0_DONE) {
307                         /* Mask RX done interrupt immediately after it occurs, do not clear
308                          * the interrupt if the mask operation fails.
309                          */
310                         if (!t7xx_mask_dlq_intr(hw_info, qno))
311                                 t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_Q0_DONE, BIT(qno));
312                         else
313                                 intr_status &= ~DP_DL_INT_Q0_DONE;
314                 }
315         } else {
316                 if (intr_status & DP_DL_INT_Q1_PITCNT_LEN_ERR) {
317                         t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_Q1_PITCNT_LEN_ERR, BIT(qno));
318                         t7xx_dpmaif_dlq_mask_rx_pitcnt_len_err_intr(hw_info, qno);
319                 }
320
321                 if (intr_status & DP_DL_INT_Q1_DONE) {
322                         if (!t7xx_mask_dlq_intr(hw_info, qno))
323                                 t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_Q1_DONE, BIT(qno));
324                         else
325                                 intr_status &= ~DP_DL_INT_Q1_DONE;
326                 }
327         }
328
329         intr_status |= DP_DL_INT_BATCNT_LEN_ERR;
330         /* Clear interrupt status */
331         iowrite32(intr_status, hw_info->pcie_base + DPMAIF_AP_APDL_L2TISAR0);
332 }
333
334 /**
335  * t7xx_dpmaif_hw_get_intr_cnt() - Reads interrupt status and count from HW.
336  * @hw_info: Pointer to struct hw_info.
337  * @para: Pointer to struct dpmaif_hw_intr_st_para.
338  * @qno: Queue number.
339  *
340  * Reads RX/TX interrupt status from HW and clears UL/DL status as needed.
341  *
342  * Return: Interrupt count.
343  */
344 int t7xx_dpmaif_hw_get_intr_cnt(struct dpmaif_hw_info *hw_info,
345                                 struct dpmaif_hw_intr_st_para *para, int qno)
346 {
347         u32 rx_intr_status, tx_intr_status = 0;
348         u32 rx_intr_qdone, tx_intr_qdone = 0;
349
350         rx_intr_status = ioread32(hw_info->pcie_base + DPMAIF_AP_APDL_L2TISAR0);
351         rx_intr_qdone = ioread32(hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMR0);
352
353         /* TX interrupt status */
354         if (qno == DPF_RX_QNO_DFT) {
355                 /* All ULQ and DLQ0 interrupts use the same source no need to check ULQ interrupts
356                  * when a DLQ1 interrupt has occurred.
357                  */
358                 tx_intr_status = ioread32(hw_info->pcie_base + DPMAIF_AP_L2TISAR0);
359                 tx_intr_qdone = ioread32(hw_info->pcie_base + DPMAIF_AO_UL_AP_L2TIMR0);
360         }
361
362         t7xx_dpmaif_clr_ip_busy_sts(hw_info);
363
364         if (qno == DPF_RX_QNO_DFT) {
365                 /* Do not schedule bottom half again or clear UL interrupt status when we
366                  * have already masked it.
367                  */
368                 tx_intr_status &= ~tx_intr_qdone;
369                 if (tx_intr_status)
370                         t7xx_dpmaif_hw_check_tx_intr(hw_info, tx_intr_status, para);
371         }
372
373         if (rx_intr_status) {
374                 if (qno == DPF_RX_QNO0) {
375                         rx_intr_status &= DP_DL_Q0_STATUS_MASK;
376                         if (rx_intr_qdone & DPMAIF_DL_INT_DLQ0_QDONE)
377                                 /* Do not schedule bottom half again or clear DL
378                                  * queue done interrupt status when we have already masked it.
379                                  */
380                                 rx_intr_status &= ~DP_DL_INT_Q0_DONE;
381                 } else {
382                         rx_intr_status &= DP_DL_Q1_STATUS_MASK;
383                         if (rx_intr_qdone & DPMAIF_DL_INT_DLQ1_QDONE)
384                                 rx_intr_status &= ~DP_DL_INT_Q1_DONE;
385                 }
386
387                 if (rx_intr_status)
388                         t7xx_dpmaif_hw_check_rx_intr(hw_info, rx_intr_status, para, qno);
389         }
390
391         return para->intr_cnt;
392 }
393
394 static int t7xx_dpmaif_sram_init(struct dpmaif_hw_info *hw_info)
395 {
396         u32 value;
397
398         value = ioread32(hw_info->pcie_base + DPMAIF_AP_MEM_CLR);
399         value |= DPMAIF_MEM_CLR;
400         iowrite32(value, hw_info->pcie_base + DPMAIF_AP_MEM_CLR);
401
402         return ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_AP_MEM_CLR,
403                                             value, !(value & DPMAIF_MEM_CLR), 0,
404                                             DPMAIF_CHECK_INIT_TIMEOUT_US);
405 }
406
407 static void t7xx_dpmaif_hw_reset(struct dpmaif_hw_info *hw_info)
408 {
409         iowrite32(DPMAIF_AP_AO_RST_BIT, hw_info->pcie_base + DPMAIF_AP_AO_RGU_ASSERT);
410         udelay(2);
411         iowrite32(DPMAIF_AP_RST_BIT, hw_info->pcie_base + DPMAIF_AP_RGU_ASSERT);
412         udelay(2);
413         iowrite32(DPMAIF_AP_AO_RST_BIT, hw_info->pcie_base + DPMAIF_AP_AO_RGU_DEASSERT);
414         udelay(2);
415         iowrite32(DPMAIF_AP_RST_BIT, hw_info->pcie_base + DPMAIF_AP_RGU_DEASSERT);
416         udelay(2);
417 }
418
419 static int t7xx_dpmaif_hw_config(struct dpmaif_hw_info *hw_info)
420 {
421         u32 ap_port_mode;
422         int ret;
423
424         t7xx_dpmaif_hw_reset(hw_info);
425
426         ret = t7xx_dpmaif_sram_init(hw_info);
427         if (ret)
428                 return ret;
429
430         ap_port_mode = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_THRES);
431         ap_port_mode |= DPMAIF_PORT_MODE_PCIE;
432         iowrite32(ap_port_mode, hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_THRES);
433         iowrite32(DPMAIF_CG_EN, hw_info->pcie_base + DPMAIF_AP_CG_EN);
434         return 0;
435 }
436
437 static void t7xx_dpmaif_pcie_dpmaif_sign(struct dpmaif_hw_info *hw_info)
438 {
439         iowrite32(DPMAIF_PCIE_MODE_SET_VALUE, hw_info->pcie_base + DPMAIF_UL_RESERVE_AO_RW);
440 }
441
442 static void t7xx_dpmaif_dl_performance(struct dpmaif_hw_info *hw_info)
443 {
444         u32 enable_bat_cache, enable_pit_burst;
445
446         enable_bat_cache = ioread32(hw_info->pcie_base + DPMAIF_DL_BAT_INIT_CON1);
447         enable_bat_cache |= DPMAIF_DL_BAT_CACHE_PRI;
448         iowrite32(enable_bat_cache, hw_info->pcie_base + DPMAIF_DL_BAT_INIT_CON1);
449
450         enable_pit_burst = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_THRES);
451         enable_pit_burst |= DPMAIF_DL_BURST_PIT_EN;
452         iowrite32(enable_pit_burst, hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_THRES);
453 }
454
455  /* DPMAIF DL DLQ part HW setting */
456
457 static void t7xx_dpmaif_hw_hpc_cntl_set(struct dpmaif_hw_info *hw_info)
458 {
459         unsigned int value;
460
461         value = DPMAIF_HPC_DLQ_PATH_MODE | DPMAIF_HPC_ADD_MODE_DF << 2;
462         value |= DPMAIF_HASH_PRIME_DF << 4;
463         value |= DPMAIF_HPC_TOTAL_NUM << 8;
464         iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_HPC_CNTL);
465 }
466
467 static void t7xx_dpmaif_hw_agg_cfg_set(struct dpmaif_hw_info *hw_info)
468 {
469         unsigned int value;
470
471         value = DPMAIF_AGG_MAX_LEN_DF | DPMAIF_AGG_TBL_ENT_NUM_DF << 16;
472         iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_DLQ_AGG_CFG);
473 }
474
475 static void t7xx_dpmaif_hw_hash_bit_choose_set(struct dpmaif_hw_info *hw_info)
476 {
477         iowrite32(DPMAIF_DLQ_HASH_BIT_CHOOSE_DF,
478                   hw_info->pcie_base + DPMAIF_AO_DL_DLQPIT_INIT_CON5);
479 }
480
481 static void t7xx_dpmaif_hw_mid_pit_timeout_thres_set(struct dpmaif_hw_info *hw_info)
482 {
483         iowrite32(DPMAIF_MID_TIMEOUT_THRES_DF, hw_info->pcie_base + DPMAIF_AO_DL_DLQPIT_TIMEOUT0);
484 }
485
486 static void t7xx_dpmaif_hw_dlq_timeout_thres_set(struct dpmaif_hw_info *hw_info)
487 {
488         unsigned int value, i;
489
490         /* Each register holds two DLQ threshold timeout values */
491         for (i = 0; i < DPMAIF_HPC_MAX_TOTAL_NUM / 2; i++) {
492                 value = FIELD_PREP(DPMAIF_DLQ_LOW_TIMEOUT_THRES_MKS, DPMAIF_DLQ_TIMEOUT_THRES_DF);
493                 value |= FIELD_PREP(DPMAIF_DLQ_HIGH_TIMEOUT_THRES_MSK,
494                                     DPMAIF_DLQ_TIMEOUT_THRES_DF);
495                 iowrite32(value,
496                           hw_info->pcie_base + DPMAIF_AO_DL_DLQPIT_TIMEOUT1 + sizeof(u32) * i);
497         }
498 }
499
500 static void t7xx_dpmaif_hw_dlq_start_prs_thres_set(struct dpmaif_hw_info *hw_info)
501 {
502         iowrite32(DPMAIF_DLQ_PRS_THRES_DF, hw_info->pcie_base + DPMAIF_AO_DL_DLQPIT_TRIG_THRES);
503 }
504
505 static void t7xx_dpmaif_dl_dlq_hpc_hw_init(struct dpmaif_hw_info *hw_info)
506 {
507         t7xx_dpmaif_hw_hpc_cntl_set(hw_info);
508         t7xx_dpmaif_hw_agg_cfg_set(hw_info);
509         t7xx_dpmaif_hw_hash_bit_choose_set(hw_info);
510         t7xx_dpmaif_hw_mid_pit_timeout_thres_set(hw_info);
511         t7xx_dpmaif_hw_dlq_timeout_thres_set(hw_info);
512         t7xx_dpmaif_hw_dlq_start_prs_thres_set(hw_info);
513 }
514
515 static int t7xx_dpmaif_dl_bat_init_done(struct dpmaif_hw_info *hw_info, bool frg_en)
516 {
517         u32 value, dl_bat_init = 0;
518         int ret;
519
520         if (frg_en)
521                 dl_bat_init = DPMAIF_DL_BAT_FRG_INIT;
522
523         dl_bat_init |= DPMAIF_DL_BAT_INIT_ALLSET;
524         dl_bat_init |= DPMAIF_DL_BAT_INIT_EN;
525
526         ret = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_DL_BAT_INIT,
527                                            value, !(value & DPMAIF_DL_BAT_INIT_NOT_READY), 0,
528                                            DPMAIF_CHECK_INIT_TIMEOUT_US);
529         if (ret) {
530                 dev_err(hw_info->dev, "Data plane modem DL BAT is not ready\n");
531                 return ret;
532         }
533
534         iowrite32(dl_bat_init, hw_info->pcie_base + DPMAIF_DL_BAT_INIT);
535
536         ret = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_DL_BAT_INIT,
537                                            value, !(value & DPMAIF_DL_BAT_INIT_NOT_READY), 0,
538                                            DPMAIF_CHECK_INIT_TIMEOUT_US);
539         if (ret)
540                 dev_err(hw_info->dev, "Data plane modem DL BAT initialization failed\n");
541
542         return ret;
543 }
544
545 static void t7xx_dpmaif_dl_set_bat_base_addr(struct dpmaif_hw_info *hw_info,
546                                              dma_addr_t addr)
547 {
548         iowrite32(lower_32_bits(addr), hw_info->pcie_base + DPMAIF_DL_BAT_INIT_CON0);
549         iowrite32(upper_32_bits(addr), hw_info->pcie_base + DPMAIF_DL_BAT_INIT_CON3);
550 }
551
552 static void t7xx_dpmaif_dl_set_bat_size(struct dpmaif_hw_info *hw_info, unsigned int size)
553 {
554         unsigned int value;
555
556         value = ioread32(hw_info->pcie_base + DPMAIF_DL_BAT_INIT_CON1);
557         value &= ~DPMAIF_BAT_SIZE_MSK;
558         value |= size & DPMAIF_BAT_SIZE_MSK;
559         iowrite32(value, hw_info->pcie_base + DPMAIF_DL_BAT_INIT_CON1);
560 }
561
562 static void t7xx_dpmaif_dl_bat_en(struct dpmaif_hw_info *hw_info, bool enable)
563 {
564         unsigned int value;
565
566         value = ioread32(hw_info->pcie_base + DPMAIF_DL_BAT_INIT_CON1);
567
568         if (enable)
569                 value |= DPMAIF_BAT_EN_MSK;
570         else
571                 value &= ~DPMAIF_BAT_EN_MSK;
572
573         iowrite32(value, hw_info->pcie_base + DPMAIF_DL_BAT_INIT_CON1);
574 }
575
576 static void t7xx_dpmaif_dl_set_ao_bid_maxcnt(struct dpmaif_hw_info *hw_info)
577 {
578         unsigned int value;
579
580         value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON0);
581         value &= ~DPMAIF_BAT_BID_MAXCNT_MSK;
582         value |= FIELD_PREP(DPMAIF_BAT_BID_MAXCNT_MSK, DPMAIF_HW_PKT_BIDCNT);
583         iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON0);
584 }
585
586 static void t7xx_dpmaif_dl_set_ao_mtu(struct dpmaif_hw_info *hw_info)
587 {
588         iowrite32(DPMAIF_HW_MTU_SIZE, hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON1);
589 }
590
591 static void t7xx_dpmaif_dl_set_ao_pit_chknum(struct dpmaif_hw_info *hw_info)
592 {
593         unsigned int value;
594
595         value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON2);
596         value &= ~DPMAIF_PIT_CHK_NUM_MSK;
597         value |= FIELD_PREP(DPMAIF_PIT_CHK_NUM_MSK, DPMAIF_HW_CHK_PIT_NUM);
598         iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON2);
599 }
600
601 static void t7xx_dpmaif_dl_set_ao_remain_minsz(struct dpmaif_hw_info *hw_info)
602 {
603         unsigned int value;
604
605         value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON0);
606         value &= ~DPMAIF_BAT_REMAIN_MINSZ_MSK;
607         value |= FIELD_PREP(DPMAIF_BAT_REMAIN_MINSZ_MSK,
608                             DPMAIF_HW_BAT_REMAIN / DPMAIF_BAT_REMAIN_SZ_BASE);
609         iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON0);
610 }
611
612 static void t7xx_dpmaif_dl_set_ao_bat_bufsz(struct dpmaif_hw_info *hw_info)
613 {
614         unsigned int value;
615
616         value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON2);
617         value &= ~DPMAIF_BAT_BUF_SZ_MSK;
618         value |= FIELD_PREP(DPMAIF_BAT_BUF_SZ_MSK,
619                             DPMAIF_HW_BAT_PKTBUF / DPMAIF_BAT_BUFFER_SZ_BASE);
620         iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON2);
621 }
622
623 static void t7xx_dpmaif_dl_set_ao_bat_rsv_length(struct dpmaif_hw_info *hw_info)
624 {
625         unsigned int value;
626
627         value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON2);
628         value &= ~DPMAIF_BAT_RSV_LEN_MSK;
629         value |= DPMAIF_HW_BAT_RSVLEN;
630         iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON2);
631 }
632
633 static void t7xx_dpmaif_dl_set_pkt_alignment(struct dpmaif_hw_info *hw_info)
634 {
635         unsigned int value;
636
637         value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_THRES);
638         value &= ~DPMAIF_PKT_ALIGN_MSK;
639         value |= DPMAIF_PKT_ALIGN_EN;
640         iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_THRES);
641 }
642
643 static void t7xx_dpmaif_dl_set_pkt_checksum(struct dpmaif_hw_info *hw_info)
644 {
645         unsigned int value;
646
647         value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_THRES);
648         value |= DPMAIF_DL_PKT_CHECKSUM_EN;
649         iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_THRES);
650 }
651
652 static void t7xx_dpmaif_dl_set_ao_frg_check_thres(struct dpmaif_hw_info *hw_info)
653 {
654         unsigned int value;
655
656         value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_FRG_THRES);
657         value &= ~DPMAIF_FRG_CHECK_THRES_MSK;
658         value |= DPMAIF_HW_CHK_FRG_NUM;
659         iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_FRG_THRES);
660 }
661
662 static void t7xx_dpmaif_dl_set_ao_frg_bufsz(struct dpmaif_hw_info *hw_info)
663 {
664         unsigned int value;
665
666         value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_FRG_THRES);
667         value &= ~DPMAIF_FRG_BUF_SZ_MSK;
668         value |= FIELD_PREP(DPMAIF_FRG_BUF_SZ_MSK,
669                             DPMAIF_HW_FRG_PKTBUF / DPMAIF_FRG_BUFFER_SZ_BASE);
670         iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_FRG_THRES);
671 }
672
673 static void t7xx_dpmaif_dl_frg_ao_en(struct dpmaif_hw_info *hw_info, bool enable)
674 {
675         unsigned int value;
676
677         value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_FRG_THRES);
678
679         if (enable)
680                 value |= DPMAIF_FRG_EN_MSK;
681         else
682                 value &= ~DPMAIF_FRG_EN_MSK;
683
684         iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_FRG_THRES);
685 }
686
687 static void t7xx_dpmaif_dl_set_ao_bat_check_thres(struct dpmaif_hw_info *hw_info)
688 {
689         unsigned int value;
690
691         value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_THRES);
692         value &= ~DPMAIF_BAT_CHECK_THRES_MSK;
693         value |= FIELD_PREP(DPMAIF_BAT_CHECK_THRES_MSK, DPMAIF_HW_CHK_BAT_NUM);
694         iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_THRES);
695 }
696
697 static void t7xx_dpmaif_dl_set_pit_seqnum(struct dpmaif_hw_info *hw_info)
698 {
699         unsigned int value;
700
701         value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_PIT_SEQ_END);
702         value &= ~DPMAIF_DL_PIT_SEQ_MSK;
703         value |= DPMAIF_DL_PIT_SEQ_VALUE;
704         iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_PIT_SEQ_END);
705 }
706
707 static void t7xx_dpmaif_dl_set_dlq_pit_base_addr(struct dpmaif_hw_info *hw_info,
708                                                  dma_addr_t addr)
709 {
710         iowrite32(lower_32_bits(addr), hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT_CON0);
711         iowrite32(upper_32_bits(addr), hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT_CON4);
712 }
713
714 static void t7xx_dpmaif_dl_set_dlq_pit_size(struct dpmaif_hw_info *hw_info, unsigned int size)
715 {
716         unsigned int value;
717
718         value = ioread32(hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT_CON1);
719         value &= ~DPMAIF_PIT_SIZE_MSK;
720         value |= size & DPMAIF_PIT_SIZE_MSK;
721         iowrite32(value, hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT_CON1);
722         iowrite32(0, hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT_CON2);
723         iowrite32(0, hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT_CON3);
724         iowrite32(0, hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT_CON5);
725         iowrite32(0, hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT_CON6);
726 }
727
728 static void t7xx_dpmaif_dl_dlq_pit_en(struct dpmaif_hw_info *hw_info)
729 {
730         unsigned int value;
731
732         value = ioread32(hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT_CON3);
733         value |= DPMAIF_DLQPIT_EN_MSK;
734         iowrite32(value, hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT_CON3);
735 }
736
737 static void t7xx_dpmaif_dl_dlq_pit_init_done(struct dpmaif_hw_info *hw_info,
738                                              unsigned int pit_idx)
739 {
740         unsigned int dl_pit_init;
741         int timeout;
742         u32 value;
743
744         dl_pit_init = DPMAIF_DL_PIT_INIT_ALLSET;
745         dl_pit_init |= (pit_idx << DPMAIF_DLQPIT_CHAN_OFS);
746         dl_pit_init |= DPMAIF_DL_PIT_INIT_EN;
747
748         timeout = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT,
749                                                value, !(value & DPMAIF_DL_PIT_INIT_NOT_READY),
750                                                DPMAIF_CHECK_DELAY_US,
751                                                DPMAIF_CHECK_INIT_TIMEOUT_US);
752         if (timeout) {
753                 dev_err(hw_info->dev, "Data plane modem DL PIT is not ready\n");
754                 return;
755         }
756
757         iowrite32(dl_pit_init, hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT);
758         timeout = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT,
759                                                value, !(value & DPMAIF_DL_PIT_INIT_NOT_READY),
760                                                DPMAIF_CHECK_DELAY_US,
761                                                DPMAIF_CHECK_INIT_TIMEOUT_US);
762         if (timeout)
763                 dev_err(hw_info->dev, "Data plane modem DL PIT initialization failed\n");
764 }
765
766 static void t7xx_dpmaif_config_dlq_pit_hw(struct dpmaif_hw_info *hw_info, unsigned int q_num,
767                                           struct dpmaif_dl *dl_que)
768 {
769         t7xx_dpmaif_dl_set_dlq_pit_base_addr(hw_info, dl_que->pit_base);
770         t7xx_dpmaif_dl_set_dlq_pit_size(hw_info, dl_que->pit_size_cnt);
771         t7xx_dpmaif_dl_dlq_pit_en(hw_info);
772         t7xx_dpmaif_dl_dlq_pit_init_done(hw_info, q_num);
773 }
774
775 static void t7xx_dpmaif_config_all_dlq_hw(struct dpmaif_hw_info *hw_info)
776 {
777         int i;
778
779         for (i = 0; i < DPMAIF_RXQ_NUM; i++)
780                 t7xx_dpmaif_config_dlq_pit_hw(hw_info, i, &hw_info->dl_que[i]);
781 }
782
783 static void t7xx_dpmaif_dl_all_q_en(struct dpmaif_hw_info *hw_info, bool enable)
784 {
785         u32 dl_bat_init, value;
786         int timeout;
787
788         value = ioread32(hw_info->pcie_base + DPMAIF_DL_BAT_INIT_CON1);
789
790         if (enable)
791                 value |= DPMAIF_BAT_EN_MSK;
792         else
793                 value &= ~DPMAIF_BAT_EN_MSK;
794
795         iowrite32(value, hw_info->pcie_base + DPMAIF_DL_BAT_INIT_CON1);
796         dl_bat_init = DPMAIF_DL_BAT_INIT_ONLY_ENABLE_BIT;
797         dl_bat_init |= DPMAIF_DL_BAT_INIT_EN;
798
799         timeout = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_DL_BAT_INIT,
800                                                value, !(value & DPMAIF_DL_BAT_INIT_NOT_READY), 0,
801                                                DPMAIF_CHECK_TIMEOUT_US);
802         if (timeout)
803                 dev_err(hw_info->dev, "Timeout updating BAT setting to HW\n");
804
805         iowrite32(dl_bat_init, hw_info->pcie_base + DPMAIF_DL_BAT_INIT);
806         timeout = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_DL_BAT_INIT,
807                                                value, !(value & DPMAIF_DL_BAT_INIT_NOT_READY), 0,
808                                                DPMAIF_CHECK_TIMEOUT_US);
809         if (timeout)
810                 dev_err(hw_info->dev, "Data plane modem DL BAT is not ready\n");
811 }
812
813 static int t7xx_dpmaif_config_dlq_hw(struct dpmaif_hw_info *hw_info)
814 {
815         struct dpmaif_dl *dl_que;
816         int ret;
817
818         t7xx_dpmaif_dl_dlq_hpc_hw_init(hw_info);
819
820         dl_que = &hw_info->dl_que[0]; /* All queues share one BAT/frag BAT table */
821         if (!dl_que->que_started)
822                 return -EBUSY;
823
824         t7xx_dpmaif_dl_set_ao_remain_minsz(hw_info);
825         t7xx_dpmaif_dl_set_ao_bat_bufsz(hw_info);
826         t7xx_dpmaif_dl_set_ao_frg_bufsz(hw_info);
827         t7xx_dpmaif_dl_set_ao_bat_rsv_length(hw_info);
828         t7xx_dpmaif_dl_set_ao_bid_maxcnt(hw_info);
829         t7xx_dpmaif_dl_set_pkt_alignment(hw_info);
830         t7xx_dpmaif_dl_set_pit_seqnum(hw_info);
831         t7xx_dpmaif_dl_set_ao_mtu(hw_info);
832         t7xx_dpmaif_dl_set_ao_pit_chknum(hw_info);
833         t7xx_dpmaif_dl_set_ao_bat_check_thres(hw_info);
834         t7xx_dpmaif_dl_set_ao_frg_check_thres(hw_info);
835         t7xx_dpmaif_dl_frg_ao_en(hw_info, true);
836
837         t7xx_dpmaif_dl_set_bat_base_addr(hw_info, dl_que->frg_base);
838         t7xx_dpmaif_dl_set_bat_size(hw_info, dl_que->frg_size_cnt);
839         t7xx_dpmaif_dl_bat_en(hw_info, true);
840
841         ret = t7xx_dpmaif_dl_bat_init_done(hw_info, true);
842         if (ret)
843                 return ret;
844
845         t7xx_dpmaif_dl_set_bat_base_addr(hw_info, dl_que->bat_base);
846         t7xx_dpmaif_dl_set_bat_size(hw_info, dl_que->bat_size_cnt);
847         t7xx_dpmaif_dl_bat_en(hw_info, false);
848
849         ret = t7xx_dpmaif_dl_bat_init_done(hw_info, false);
850         if (ret)
851                 return ret;
852
853         /* Init PIT (two PIT table) */
854         t7xx_dpmaif_config_all_dlq_hw(hw_info);
855         t7xx_dpmaif_dl_all_q_en(hw_info, true);
856         t7xx_dpmaif_dl_set_pkt_checksum(hw_info);
857         return 0;
858 }
859
860 static void t7xx_dpmaif_ul_update_drb_size(struct dpmaif_hw_info *hw_info,
861                                            unsigned int q_num, unsigned int size)
862 {
863         unsigned int value;
864
865         value = ioread32(hw_info->pcie_base + DPMAIF_UL_DRBSIZE_ADDRH_n(q_num));
866         value &= ~DPMAIF_DRB_SIZE_MSK;
867         value |= size & DPMAIF_DRB_SIZE_MSK;
868         iowrite32(value, hw_info->pcie_base + DPMAIF_UL_DRBSIZE_ADDRH_n(q_num));
869 }
870
871 static void t7xx_dpmaif_ul_update_drb_base_addr(struct dpmaif_hw_info *hw_info,
872                                                 unsigned int q_num, dma_addr_t addr)
873 {
874         iowrite32(lower_32_bits(addr), hw_info->pcie_base + DPMAIF_ULQSAR_n(q_num));
875         iowrite32(upper_32_bits(addr), hw_info->pcie_base + DPMAIF_UL_DRB_ADDRH_n(q_num));
876 }
877
878 static void t7xx_dpmaif_ul_rdy_en(struct dpmaif_hw_info *hw_info,
879                                   unsigned int q_num, bool ready)
880 {
881         u32 value;
882
883         value = ioread32(hw_info->pcie_base + DPMAIF_AO_UL_CHNL_ARB0);
884
885         if (ready)
886                 value |= BIT(q_num);
887         else
888                 value &= ~BIT(q_num);
889
890         iowrite32(value, hw_info->pcie_base + DPMAIF_AO_UL_CHNL_ARB0);
891 }
892
893 static void t7xx_dpmaif_ul_arb_en(struct dpmaif_hw_info *hw_info,
894                                   unsigned int q_num, bool enable)
895 {
896         u32 value;
897
898         value = ioread32(hw_info->pcie_base + DPMAIF_AO_UL_CHNL_ARB0);
899
900         if (enable)
901                 value |= BIT(q_num + 8);
902         else
903                 value &= ~BIT(q_num + 8);
904
905         iowrite32(value, hw_info->pcie_base + DPMAIF_AO_UL_CHNL_ARB0);
906 }
907
908 static void t7xx_dpmaif_config_ulq_hw(struct dpmaif_hw_info *hw_info)
909 {
910         struct dpmaif_ul *ul_que;
911         int i;
912
913         for (i = 0; i < DPMAIF_TXQ_NUM; i++) {
914                 ul_que = &hw_info->ul_que[i];
915                 if (ul_que->que_started) {
916                         t7xx_dpmaif_ul_update_drb_size(hw_info, i, ul_que->drb_size_cnt *
917                                                        DPMAIF_UL_DRB_SIZE_WORD);
918                         t7xx_dpmaif_ul_update_drb_base_addr(hw_info, i, ul_que->drb_base);
919                         t7xx_dpmaif_ul_rdy_en(hw_info, i, true);
920                         t7xx_dpmaif_ul_arb_en(hw_info, i, true);
921                 } else {
922                         t7xx_dpmaif_ul_arb_en(hw_info, i, false);
923                 }
924         }
925 }
926
927 static int t7xx_dpmaif_hw_init_done(struct dpmaif_hw_info *hw_info)
928 {
929         u32 ap_cfg;
930         int ret;
931
932         ap_cfg = ioread32(hw_info->pcie_base + DPMAIF_AP_OVERWRITE_CFG);
933         ap_cfg |= DPMAIF_SRAM_SYNC;
934         iowrite32(ap_cfg, hw_info->pcie_base + DPMAIF_AP_OVERWRITE_CFG);
935
936         ret = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_AP_OVERWRITE_CFG,
937                                            ap_cfg, !(ap_cfg & DPMAIF_SRAM_SYNC), 0,
938                                            DPMAIF_CHECK_TIMEOUT_US);
939         if (ret)
940                 return ret;
941
942         iowrite32(DPMAIF_UL_INIT_DONE, hw_info->pcie_base + DPMAIF_AO_UL_INIT_SET);
943         iowrite32(DPMAIF_DL_INIT_DONE, hw_info->pcie_base + DPMAIF_AO_DL_INIT_SET);
944         return 0;
945 }
946
947 static bool t7xx_dpmaif_dl_idle_check(struct dpmaif_hw_info *hw_info)
948 {
949         u32 dpmaif_dl_is_busy = ioread32(hw_info->pcie_base + DPMAIF_DL_CHK_BUSY);
950
951         return !(dpmaif_dl_is_busy & DPMAIF_DL_IDLE_STS);
952 }
953
954 static void t7xx_dpmaif_ul_all_q_en(struct dpmaif_hw_info *hw_info, bool enable)
955 {
956         u32 ul_arb_en = ioread32(hw_info->pcie_base + DPMAIF_AO_UL_CHNL_ARB0);
957
958         if (enable)
959                 ul_arb_en |= DPMAIF_UL_ALL_QUE_ARB_EN;
960         else
961                 ul_arb_en &= ~DPMAIF_UL_ALL_QUE_ARB_EN;
962
963         iowrite32(ul_arb_en, hw_info->pcie_base + DPMAIF_AO_UL_CHNL_ARB0);
964 }
965
966 static bool t7xx_dpmaif_ul_idle_check(struct dpmaif_hw_info *hw_info)
967 {
968         u32 dpmaif_ul_is_busy = ioread32(hw_info->pcie_base + DPMAIF_UL_CHK_BUSY);
969
970         return !(dpmaif_ul_is_busy & DPMAIF_UL_IDLE_STS);
971 }
972
973 void t7xx_dpmaif_ul_update_hw_drb_cnt(struct dpmaif_hw_info *hw_info, unsigned int q_num,
974                                       unsigned int drb_entry_cnt)
975 {
976         u32 ul_update, value;
977         int err;
978
979         ul_update = drb_entry_cnt & DPMAIF_UL_ADD_COUNT_MASK;
980         ul_update |= DPMAIF_UL_ADD_UPDATE;
981
982         err = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_ULQ_ADD_DESC_CH_n(q_num),
983                                            value, !(value & DPMAIF_UL_ADD_NOT_READY), 0,
984                                            DPMAIF_CHECK_TIMEOUT_US);
985         if (err) {
986                 dev_err(hw_info->dev, "UL add is not ready\n");
987                 return;
988         }
989
990         iowrite32(ul_update, hw_info->pcie_base + DPMAIF_ULQ_ADD_DESC_CH_n(q_num));
991
992         err = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_ULQ_ADD_DESC_CH_n(q_num),
993                                            value, !(value & DPMAIF_UL_ADD_NOT_READY), 0,
994                                            DPMAIF_CHECK_TIMEOUT_US);
995         if (err)
996                 dev_err(hw_info->dev, "Timeout updating UL add\n");
997 }
998
999 unsigned int t7xx_dpmaif_ul_get_rd_idx(struct dpmaif_hw_info *hw_info, unsigned int q_num)
1000 {
1001         unsigned int value = ioread32(hw_info->pcie_base + DPMAIF_ULQ_STA0_n(q_num));
1002
1003         return FIELD_GET(DPMAIF_UL_DRB_RIDX_MSK, value) / DPMAIF_UL_DRB_SIZE_WORD;
1004 }
1005
1006 int t7xx_dpmaif_dlq_add_pit_remain_cnt(struct dpmaif_hw_info *hw_info, unsigned int dlq_pit_idx,
1007                                        unsigned int pit_remain_cnt)
1008 {
1009         u32 dl_update, value;
1010         int ret;
1011
1012         dl_update = pit_remain_cnt & DPMAIF_PIT_REM_CNT_MSK;
1013         dl_update |= DPMAIF_DL_ADD_UPDATE | (dlq_pit_idx << DPMAIF_ADD_DLQ_PIT_CHAN_OFS);
1014
1015         ret = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_DL_DLQPIT_ADD,
1016                                            value, !(value & DPMAIF_DL_ADD_NOT_READY), 0,
1017                                            DPMAIF_CHECK_TIMEOUT_US);
1018         if (ret) {
1019                 dev_err(hw_info->dev, "Data plane modem is not ready to add dlq\n");
1020                 return ret;
1021         }
1022
1023         iowrite32(dl_update, hw_info->pcie_base + DPMAIF_DL_DLQPIT_ADD);
1024
1025         ret = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_DL_DLQPIT_ADD,
1026                                            value, !(value & DPMAIF_DL_ADD_NOT_READY), 0,
1027                                            DPMAIF_CHECK_TIMEOUT_US);
1028         if (ret) {
1029                 dev_err(hw_info->dev, "Data plane modem add dlq failed\n");
1030                 return ret;
1031         }
1032
1033         return 0;
1034 }
1035
1036 unsigned int t7xx_dpmaif_dl_dlq_pit_get_wr_idx(struct dpmaif_hw_info *hw_info,
1037                                                unsigned int dlq_pit_idx)
1038 {
1039         u32 value;
1040
1041         value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_DLQ_WR_IDX +
1042                          dlq_pit_idx * DLQ_PIT_IDX_SIZE);
1043         return value & DPMAIF_DL_RD_WR_IDX_MSK;
1044 }
1045
1046 static int t7xx_dl_add_timedout(struct dpmaif_hw_info *hw_info)
1047 {
1048         u32 value;
1049
1050         return ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_DL_BAT_ADD,
1051                                            value, !(value & DPMAIF_DL_ADD_NOT_READY), 0,
1052                                            DPMAIF_CHECK_TIMEOUT_US);
1053 }
1054
1055 int t7xx_dpmaif_dl_snd_hw_bat_cnt(struct dpmaif_hw_info *hw_info, unsigned int bat_entry_cnt)
1056 {
1057         unsigned int value;
1058
1059         if (t7xx_dl_add_timedout(hw_info)) {
1060                 dev_err(hw_info->dev, "DL add BAT not ready\n");
1061                 return -EBUSY;
1062         }
1063
1064         value = bat_entry_cnt & DPMAIF_DL_ADD_COUNT_MASK;
1065         value |= DPMAIF_DL_ADD_UPDATE;
1066         iowrite32(value, hw_info->pcie_base + DPMAIF_DL_BAT_ADD);
1067
1068         if (t7xx_dl_add_timedout(hw_info)) {
1069                 dev_err(hw_info->dev, "DL add BAT timeout\n");
1070                 return -EBUSY;
1071         }
1072
1073         return 0;
1074 }
1075
1076 unsigned int t7xx_dpmaif_dl_get_bat_rd_idx(struct dpmaif_hw_info *hw_info, unsigned int q_num)
1077 {
1078         u32 value;
1079
1080         value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_BAT_RD_IDX);
1081         return value & DPMAIF_DL_RD_WR_IDX_MSK;
1082 }
1083
1084 unsigned int t7xx_dpmaif_dl_get_bat_wr_idx(struct dpmaif_hw_info *hw_info, unsigned int q_num)
1085 {
1086         u32 value;
1087
1088         value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_BAT_WR_IDX);
1089         return value & DPMAIF_DL_RD_WR_IDX_MSK;
1090 }
1091
1092 int t7xx_dpmaif_dl_snd_hw_frg_cnt(struct dpmaif_hw_info *hw_info, unsigned int frg_entry_cnt)
1093 {
1094         unsigned int value;
1095
1096         if (t7xx_dl_add_timedout(hw_info)) {
1097                 dev_err(hw_info->dev, "Data plane modem is not ready to add frag DLQ\n");
1098                 return -EBUSY;
1099         }
1100
1101         value = frg_entry_cnt & DPMAIF_DL_ADD_COUNT_MASK;
1102         value |= DPMAIF_DL_FRG_ADD_UPDATE | DPMAIF_DL_ADD_UPDATE;
1103         iowrite32(value, hw_info->pcie_base + DPMAIF_DL_BAT_ADD);
1104
1105         if (t7xx_dl_add_timedout(hw_info)) {
1106                 dev_err(hw_info->dev, "Data plane modem add frag DLQ failed");
1107                 return -EBUSY;
1108         }
1109
1110         return 0;
1111 }
1112
1113 unsigned int t7xx_dpmaif_dl_get_frg_rd_idx(struct dpmaif_hw_info *hw_info, unsigned int q_num)
1114 {
1115         u32 value;
1116
1117         value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_FRGBAT_RD_IDX);
1118         return value & DPMAIF_DL_RD_WR_IDX_MSK;
1119 }
1120
1121 static void t7xx_dpmaif_set_queue_property(struct dpmaif_hw_info *hw_info,
1122                                            struct dpmaif_hw_params *init_para)
1123 {
1124         struct dpmaif_dl *dl_que;
1125         struct dpmaif_ul *ul_que;
1126         int i;
1127
1128         for (i = 0; i < DPMAIF_RXQ_NUM; i++) {
1129                 dl_que = &hw_info->dl_que[i];
1130                 dl_que->bat_base = init_para->pkt_bat_base_addr[i];
1131                 dl_que->bat_size_cnt = init_para->pkt_bat_size_cnt[i];
1132                 dl_que->pit_base = init_para->pit_base_addr[i];
1133                 dl_que->pit_size_cnt = init_para->pit_size_cnt[i];
1134                 dl_que->frg_base = init_para->frg_bat_base_addr[i];
1135                 dl_que->frg_size_cnt = init_para->frg_bat_size_cnt[i];
1136                 dl_que->que_started = true;
1137         }
1138
1139         for (i = 0; i < DPMAIF_TXQ_NUM; i++) {
1140                 ul_que = &hw_info->ul_que[i];
1141                 ul_que->drb_base = init_para->drb_base_addr[i];
1142                 ul_que->drb_size_cnt = init_para->drb_size_cnt[i];
1143                 ul_que->que_started = true;
1144         }
1145 }
1146
1147 /**
1148  * t7xx_dpmaif_hw_stop_all_txq() - Stop all TX queues.
1149  * @hw_info: Pointer to struct hw_info.
1150  *
1151  * Disable HW UL queues. Checks busy UL queues to go to idle
1152  * with an attempt count of 1000000.
1153  *
1154  * Return:
1155  * * 0                  - Success
1156  * * -ETIMEDOUT         - Timed out checking busy queues
1157  */
1158 int t7xx_dpmaif_hw_stop_all_txq(struct dpmaif_hw_info *hw_info)
1159 {
1160         int count = 0;
1161
1162         t7xx_dpmaif_ul_all_q_en(hw_info, false);
1163         while (t7xx_dpmaif_ul_idle_check(hw_info)) {
1164                 if (++count >= DPMAIF_MAX_CHECK_COUNT) {
1165                         dev_err(hw_info->dev, "Failed to stop TX, status: 0x%x\n",
1166                                 ioread32(hw_info->pcie_base + DPMAIF_UL_CHK_BUSY));
1167                         return -ETIMEDOUT;
1168                 }
1169         }
1170
1171         return 0;
1172 }
1173
1174 /**
1175  * t7xx_dpmaif_hw_stop_all_rxq() - Stop all RX queues.
1176  * @hw_info: Pointer to struct hw_info.
1177  *
1178  * Disable HW DL queue. Checks busy UL queues to go to idle
1179  * with an attempt count of 1000000.
1180  * Check that HW PIT write index equals read index with the same
1181  * attempt count.
1182  *
1183  * Return:
1184  * * 0                  - Success.
1185  * * -ETIMEDOUT         - Timed out checking busy queues.
1186  */
1187 int t7xx_dpmaif_hw_stop_all_rxq(struct dpmaif_hw_info *hw_info)
1188 {
1189         unsigned int wr_idx, rd_idx;
1190         int count = 0;
1191
1192         t7xx_dpmaif_dl_all_q_en(hw_info, false);
1193         while (t7xx_dpmaif_dl_idle_check(hw_info)) {
1194                 if (++count >= DPMAIF_MAX_CHECK_COUNT) {
1195                         dev_err(hw_info->dev, "Failed to stop RX, status: 0x%x\n",
1196                                 ioread32(hw_info->pcie_base + DPMAIF_DL_CHK_BUSY));
1197                         return -ETIMEDOUT;
1198                 }
1199         }
1200
1201         /* Check middle PIT sync done */
1202         count = 0;
1203         do {
1204                 wr_idx = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_PIT_WR_IDX);
1205                 wr_idx &= DPMAIF_DL_RD_WR_IDX_MSK;
1206                 rd_idx = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_PIT_RD_IDX);
1207                 rd_idx &= DPMAIF_DL_RD_WR_IDX_MSK;
1208
1209                 if (wr_idx == rd_idx)
1210                         return 0;
1211         } while (++count < DPMAIF_MAX_CHECK_COUNT);
1212
1213         dev_err(hw_info->dev, "Check middle PIT sync fail\n");
1214         return -ETIMEDOUT;
1215 }
1216
1217 void t7xx_dpmaif_start_hw(struct dpmaif_hw_info *hw_info)
1218 {
1219         t7xx_dpmaif_ul_all_q_en(hw_info, true);
1220         t7xx_dpmaif_dl_all_q_en(hw_info, true);
1221 }
1222
1223 /**
1224  * t7xx_dpmaif_hw_init() - Initialize HW data path API.
1225  * @hw_info: Pointer to struct hw_info.
1226  * @init_param: Pointer to struct dpmaif_hw_params.
1227  *
1228  * Configures port mode, clock config, HW interrupt initialization, and HW queue.
1229  *
1230  * Return:
1231  * * 0          - Success.
1232  * * -ERROR     - Error code from failure sub-initializations.
1233  */
1234 int t7xx_dpmaif_hw_init(struct dpmaif_hw_info *hw_info, struct dpmaif_hw_params *init_param)
1235 {
1236         int ret;
1237
1238         ret = t7xx_dpmaif_hw_config(hw_info);
1239         if (ret) {
1240                 dev_err(hw_info->dev, "DPMAIF HW config failed\n");
1241                 return ret;
1242         }
1243
1244         ret = t7xx_dpmaif_init_intr(hw_info);
1245         if (ret) {
1246                 dev_err(hw_info->dev, "DPMAIF HW interrupts init failed\n");
1247                 return ret;
1248         }
1249
1250         t7xx_dpmaif_set_queue_property(hw_info, init_param);
1251         t7xx_dpmaif_pcie_dpmaif_sign(hw_info);
1252         t7xx_dpmaif_dl_performance(hw_info);
1253
1254         ret = t7xx_dpmaif_config_dlq_hw(hw_info);
1255         if (ret) {
1256                 dev_err(hw_info->dev, "DPMAIF HW dlq config failed\n");
1257                 return ret;
1258         }
1259
1260         t7xx_dpmaif_config_ulq_hw(hw_info);
1261
1262         ret = t7xx_dpmaif_hw_init_done(hw_info);
1263         if (ret)
1264                 dev_err(hw_info->dev, "DPMAIF HW queue init failed\n");
1265
1266         return ret;
1267 }
1268
1269 bool t7xx_dpmaif_ul_clr_done(struct dpmaif_hw_info *hw_info, unsigned int qno)
1270 {
1271         u32 intr_status;
1272
1273         intr_status = ioread32(hw_info->pcie_base + DPMAIF_AP_L2TISAR0);
1274         intr_status &= BIT(DP_UL_INT_DONE_OFFSET + qno);
1275         if (intr_status) {
1276                 iowrite32(intr_status, hw_info->pcie_base + DPMAIF_AP_L2TISAR0);
1277                 return true;
1278         }
1279
1280         return false;
1281 }