1 /*
2 * SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 // The HAL layer for PAU (ESP32-C6 specific part)
8
9 #include "soc/soc.h"
10 #include "esp_attr.h"
11 #include "hal/pau_hal.h"
12 #include "hal/pau_types.h"
13
pau_hal_set_regdma_entry_link_addr(pau_hal_context_t * hal,pau_regdma_link_addr_t * link_addr)14 void pau_hal_set_regdma_entry_link_addr(pau_hal_context_t *hal, pau_regdma_link_addr_t *link_addr)
15 {
16 pau_ll_set_regdma_link0_addr(hal->dev, (*link_addr)[0]);
17 pau_ll_set_regdma_link1_addr(hal->dev, (*link_addr)[1]);
18 pau_ll_set_regdma_link2_addr(hal->dev, (*link_addr)[2]);
19 /* The link 3 of REGDMA is reserved, PMU state switching will not use
20 * REGDMA link 3 */
21 }
22
pau_hal_start_regdma_modem_link(pau_hal_context_t * hal,bool backup_or_restore)23 void IRAM_ATTR pau_hal_start_regdma_modem_link(pau_hal_context_t *hal, bool backup_or_restore)
24 {
25 pau_ll_clear_regdma_backup_done_intr_state(hal->dev);
26 pau_ll_set_regdma_select_wifimac_link(hal->dev);
27 pau_ll_set_regdma_wifimac_link_backup_direction(hal->dev, backup_or_restore);
28 pau_ll_set_regdma_wifimac_link_backup_start_enable(hal->dev);
29
30 while (!(pau_ll_get_regdma_intr_raw_signal(hal->dev) & PAU_DONE_INT_RAW));
31 }
32
pau_hal_stop_regdma_modem_link(pau_hal_context_t * hal)33 void IRAM_ATTR pau_hal_stop_regdma_modem_link(pau_hal_context_t *hal)
34 {
35 pau_ll_set_regdma_wifimac_link_backup_start_disable(hal->dev);
36 pau_ll_set_regdma_deselect_wifimac_link(hal->dev);
37 pau_ll_clear_regdma_backup_done_intr_state(hal->dev);
38 }
39
pau_hal_start_regdma_extra_link(pau_hal_context_t * hal,bool backup_or_restore)40 void IRAM_ATTR pau_hal_start_regdma_extra_link(pau_hal_context_t *hal, bool backup_or_restore)
41 {
42 pau_ll_clear_regdma_backup_done_intr_state(hal->dev);
43 /* The link 3 of REGDMA is reserved, we use it as an extra linked list to
44 * provide backup and restore services for BLE, IEEE802.15.4 and possibly
45 * other modules */
46 pau_ll_select_regdma_entry_link(hal->dev, 3);
47 pau_ll_set_regdma_entry_link_backup_direction(hal->dev, backup_or_restore);
48 pau_ll_set_regdma_entry_link_backup_start_enable(hal->dev);
49
50 while (!(pau_ll_get_regdma_intr_raw_signal(hal->dev) & PAU_DONE_INT_RAW));
51 }
52
pau_hal_stop_regdma_extra_link(pau_hal_context_t * hal)53 void IRAM_ATTR pau_hal_stop_regdma_extra_link(pau_hal_context_t *hal)
54 {
55 pau_ll_set_regdma_entry_link_backup_start_disable(hal->dev);
56 pau_ll_select_regdma_entry_link(hal->dev, 0); /* restore link select to default */
57 pau_ll_clear_regdma_backup_done_intr_state(hal->dev);
58 }
59
