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esp_mm: cache_msync API

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This commit is contained in:
Armando
2023-02-15 12:29:34 +08:00
parent 8486a2c3ad
commit fda9746bb8
37 changed files with 740 additions and 39 deletions
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9
components/esp_lcd/src/esp_lcd_panel_rgb.c
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@@ -42,6 +42,7 @@
#include "hal/lcd_ll.h"
#include "hal/gdma_ll.h"
#include "rom/cache.h"
#include "esp_cache.h"
#if CONFIG_LCD_RGB_ISR_IRAM_SAFE
#define LCD_RGB_INTR_ALLOC_FLAGS (ESP_INTR_FLAG_IRAM | ESP_INTR_FLAG_INTRDISABLED)
@@ -798,7 +799,7 @@ static esp_err_t rgb_panel_draw_bitmap(esp_lcd_panel_t *panel, int x_start, int
if (rgb_panel->flags.fb_in_psram && !rgb_panel->bb_size) {
// CPU writes data to PSRAM through DCache, data in PSRAM might not get updated, so write back
// Note that if we use a bounce buffer, the data gets read by the CPU as well so no need to write back
Cache_WriteBack_Addr((uint32_t)(flush_ptr), bytes_to_flush);
esp_cache_msync((void *)(flush_ptr), (size_t)bytes_to_flush, 0);
}
if (!rgb_panel->bb_size) {
@@ -954,11 +955,7 @@ static IRAM_ATTR bool lcd_rgb_panel_fill_bounce_buffer(esp_rgb_panel_t *panel, u
if (panel->flags.bb_invalidate_cache) {
// We don't need the bytes we copied from the psram anymore
// Make sure that if anything happened to have changed (because the line already was in cache) we write the data back.
Cache_WriteBack_Addr((uint32_t)&panel->fbs[panel->bb_fb_index][panel->bounce_pos_px * bytes_per_pixel], panel->bb_size);
// Invalidate the data.
// Note: possible race: perhaps something on the other core can squeeze a write between this and the writeback,
// in which case that data gets discarded.
Cache_Invalidate_Addr((uint32_t)&panel->fbs[panel->bb_fb_index][panel->bounce_pos_px * bytes_per_pixel], panel->bb_size);
esp_cache_msync(&panel->fbs[panel->bb_fb_index][panel->bounce_pos_px * bytes_per_pixel], (size_t)panel->bb_size, ESP_CACHE_MSYNC_FLAG_INVALIDATE);
}
}
panel->bounce_pos_px += panel->bb_size / bytes_per_pixel;