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Merge branch 'feat/enable_l2mem_burst_buffer_mode' into 'master'

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Enable l2mem burst buffer mode && improve AXI-ICM QoS function

See merge request espressif/esp-idf!37283
This commit is contained in:
morris 2025-03-04 11:14:20 +08:00
commit 541c21f975
3 changed files with 54 additions and 6 deletions
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6
components/esp_system/port/cpu_start.c
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@ -58,6 +58,7 @@
#include "esp32c2/rom/secure_boot.h"
#elif CONFIG_IDF_TARGET_ESP32P4
#include "soc/hp_sys_clkrst_reg.h"
#include "hal/l2mem_ll.h"
#elif CONFIG_IDF_TARGET_ESP32H21
#include "esp_memprot.h"
#endif
@ -403,6 +404,11 @@ void IRAM_ATTR call_start_cpu0(void)
);
#endif
#if CONFIG_IDF_TARGET_ESP32P4
// enable the buffer mode before any AHB burst happens, that's why we do it here
l2mem_ll_enable_ahb_burst_buffer(true, true);
#endif
#if SOC_BRANCH_PREDICTOR_SUPPORTED
esp_cpu_branch_prediction_enable();
#endif

23
components/hal/esp32p4/include/hal/axi_icm_ll.h
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@ -27,13 +27,22 @@ typedef enum {
AXI_ICM_MASTER_H264_M1 = 12, // H264 master port 1
} axi_icm_ll_master_id_t;
/**
* @brief AXI ICM has independent channels for read and write access.
*/
typedef enum {
AXI_ICM_ACCESS_READ = 0,
AXI_ICM_ACCESS_WRITE = 1,
} axi_icm_ll_access_type_t;
/**
* @brief Set QoS burstiness for a master port, also enable the regulator
*
* @param mid Master port ID
* @param burstiness Burstiness value. It represents the depth of the token bucket.
* @param access_type 0: read, 1: write
*/
static inline void axi_icm_ll_set_qos_burstiness(axi_icm_ll_master_id_t mid, uint32_t burstiness)
static inline void axi_icm_ll_set_qos_burstiness(axi_icm_ll_master_id_t mid, uint32_t burstiness, axi_icm_ll_access_type_t access_type)
{
HAL_ASSERT(burstiness >= 1 && burstiness <= 256);
// wait for the previous command to finish
@ -43,8 +52,8 @@ static inline void axi_icm_ll_set_qos_burstiness(axi_icm_ll_master_id_t mid, uin
AXI_ICM_QOS.data.val = (burstiness - 1) << 16 | 0x1;
// command write operation
AXI_ICM_QOS.cmd.reg_axi_rd_wr_cmd = 1;
// write addr channel
AXI_ICM_QOS.cmd.reg_rd_wr_chan = 1;
// set the qos for read channel or write channel
AXI_ICM_QOS.cmd.reg_rd_wr_chan = access_type;
// select master port
AXI_ICM_QOS.cmd.reg_axi_master_port = mid;
// set command type: burstiness regulator
@ -69,8 +78,10 @@ static inline void axi_icm_ll_set_qos_burstiness(axi_icm_ll_master_id_t mid, uin
* @param mid Master port ID
* @param peak_level Peak level, lower value means higher rate
* @param transaction_level Transaction level, lower value means higher rate
* @param access_type 0: read, 1: write
*/
static inline void axi_icm_ll_set_qos_peak_transaction_rate(axi_icm_ll_master_id_t mid, uint32_t peak_level, uint32_t transaction_level)
static inline void axi_icm_ll_set_qos_peak_transaction_rate(axi_icm_ll_master_id_t mid, uint32_t peak_level,
uint32_t transaction_level, axi_icm_ll_access_type_t access_type)
{
HAL_ASSERT(peak_level < transaction_level && transaction_level <= 11);
while (AXI_ICM_QOS.cmd.reg_axi_cmd_en);
@ -79,8 +90,8 @@ static inline void axi_icm_ll_set_qos_peak_transaction_rate(axi_icm_ll_master_id
AXI_ICM_QOS.data.val = (0x80000000 >> peak_level) + (0x8000 >> transaction_level);
// command write operation
AXI_ICM_QOS.cmd.reg_axi_rd_wr_cmd = 1;
// write addr channel
AXI_ICM_QOS.cmd.reg_rd_wr_chan = 1;
// set the qos for read channel or write channel
AXI_ICM_QOS.cmd.reg_rd_wr_chan = access_type;
// select master port
AXI_ICM_QOS.cmd.reg_axi_master_port = mid;
// set command type: peak rate xct rate

31
components/hal/esp32p4/include/hal/l2mem_ll.h Normal file
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@ -0,0 +1,31 @@
/*
* SPDX-FileCopyrightText: 2024-2025 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#pragma once
#include <stdint.h>
#include <stdbool.h>
#include "soc/hp_system_struct.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Enable the burst buffer for L2 memory
*
* @note During AHB burst access to the L2MEM, in order to reduce the AHB request to the L2MEM arbiter,
* enabling the buffer mode can improve the performance.
* @note This function must be called before any AHB burst access to the L2MEM.
*/
static inline void l2mem_ll_enable_ahb_burst_buffer(bool en_read, bool en_write)
{
HP_SYSTEM.l2_mem_ahb_buffer_ctrl.l2_mem_ahb_rdbuffer_en = en_read;
HP_SYSTEM.l2_mem_ahb_buffer_ctrl.l2_mem_ahb_wrbuffer_en = en_write;
}
#ifdef __cplusplus
}
#endif