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refactor(gdma): move buffer aligment to buffer mount config

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This commit is contained in:
Chen Jichang
2025-08-25 14:39:34 +08:00
committed by Chen Ji Chang
parent f2f62b590d
commit ddef1d3d52
16 changed files with 92 additions and 56 deletions
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7
components/esp_driver_i3c/i3c_master.c
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@@ -306,10 +306,9 @@ static esp_err_t i3c_master_init_dma(i3c_master_bus_t *i3c_master_handle, const
// create DMA link list
size_t int_mem_align = 0;
gdma_get_alignment_constraints(i3c_master_handle->dma_tx_chan, &int_mem_align, NULL);
size_t buffer_alignment = I3C_ALIGN_UP(int_mem_align, I3C_MASTER_DMA_INTERFACE_ALIGNMENT);
size_t num_dma_nodes = esp_dma_calculate_node_count(dma_config->max_transfer_size, buffer_alignment, DMA_DESCRIPTOR_BUFFER_MAX_SIZE);
i3c_master_handle->dma_buffer_alignment = I3C_ALIGN_UP(int_mem_align, I3C_MASTER_DMA_INTERFACE_ALIGNMENT);
size_t num_dma_nodes = esp_dma_calculate_node_count(dma_config->max_transfer_size, i3c_master_handle->dma_buffer_alignment, DMA_DESCRIPTOR_BUFFER_MAX_SIZE);
gdma_link_list_config_t dma_link_config = {
.buffer_alignment = buffer_alignment, // no special buffer alignment for i3c master buffer
.item_alignment = 4, // 4 bytes alignment for AHB-DMA
.num_items = num_dma_nodes, // only one item in the link list so far
};
@@ -462,6 +461,7 @@ static esp_err_t do_dma_transaction_handler(i3c_master_bus_handle_t bus_handle,
size_t dma_aligned_size = I3C_ALIGN_UP(write_size, I3C_MASTER_DMA_INTERFACE_ALIGNMENT);
gdma_buffer_mount_config_t mount_config = {
.buffer = trans->write_buffer,
.buffer_alignment = bus_handle->dma_buffer_alignment,
.length = dma_aligned_size,
.flags = {
.mark_eof = true,
@@ -487,6 +487,7 @@ static esp_err_t do_dma_transaction_handler(i3c_master_bus_handle_t bus_handle,
size_t dma_aligned_size = I3C_ALIGN_UP(read_size, I3C_MASTER_DMA_INTERFACE_ALIGNMENT);
gdma_buffer_mount_config_t mount_config = {
.buffer = trans->read_buffer,
.buffer_alignment = bus_handle->dma_buffer_alignment,
.length = dma_aligned_size,
.flags = {
.mark_eof = true,

1
components/esp_driver_i3c/i3c_master_private.h
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@@ -161,6 +161,7 @@ struct i3c_master_bus_t {
gdma_channel_handle_t dma_rx_chan; /**< DMA channel handle for RX. */
gdma_link_list_handle_t tx_dma_link; /**< Linked list for TX DMA. */
gdma_link_list_handle_t rx_dma_link; /**< Linked list for RX DMA. */
size_t dma_buffer_alignment; /**< Alignment of the DMA buffer. */
i3c_transaction_handler_t transaction_handler; /**< Function pointer for transaction handling (FIFO or DMA) */
};