mirror of
https://github.com/espressif/esp-idf.git
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18f9dabce1
This commit changes the IRP (I/O Request Packet) structure to the URB (USB Request Block) in order to represent USB transfers in the host stack. The new URB strcuture: - Add extra safety with const fields - Allows each layer of the stack to add their own overhead variables The HCD layer API and tests have been updated to use this new URB structure
56 lines
1.6 KiB
C
56 lines
1.6 KiB
C
// Copyright 2021 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#pragma once
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#include <stddef.h>
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#include <stdint.h>
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#include <sys/queue.h>
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#include "usb.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct {
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uint8_t *data_buffer;
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size_t data_buffer_size;
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int num_bytes;
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int actual_num_bytes;
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uint32_t flags;
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usb_transfer_status_t status;
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uint32_t timeout;
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usb_transfer_cb_t callback;
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void *context;
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int num_isoc_packets;
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usb_isoc_packet_desc_t isoc_packet_desc[0];
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} usb_transfer_dummy_t;
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_Static_assert(sizeof(usb_transfer_dummy_t) == sizeof(usb_transfer_t), "usb_transfer_dummy_t does not match usb_transfer_t");
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struct urb_obj{
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TAILQ_ENTRY(urb_obj) tailq_entry;
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//HCD context pointer and variables. Must be initialized to NULL and 0 respectively
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void *hcd_ptr;
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uint32_t hcd_var;
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//Host Driver layer will add its fields here.
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//Public transfer structure. Must be last due to variable length array
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usb_transfer_t transfer;
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};
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typedef struct urb_obj urb_t;
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#ifdef __cplusplus
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}
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#endif
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