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8e7fca3255
We now generalize the USB communiction and abandon the 'req_ctx' structure inherited from openpcd. Instead we use the libosmocore 'msgb' structure to handle incoming and outgoing USB tranfers. We also use linuxlist-based msgb-queues for each endpoint.
29 lines
745 B
C
29 lines
745 B
C
#pragma once
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#include "osmocom/core/linuxlist.h"
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#include "osmocom/core/msgb.h"
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/* buffered USB endpoint (with queue of msgb) */
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struct usb_buffered_ep {
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/* endpoint number */
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uint8_t ep;
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/* OUT endpoint (1) or IN/IRQ (0)? */
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uint8_t out_from_host;
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/* currently any transfer in progress? */
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volatile uint32_t in_progress;
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/* Tx queue (IN) / Rx queue (OUT) */
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struct llist_head queue;
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};
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struct msgb *usb_buf_alloc(uint8_t ep);
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void usb_buf_free(struct msgb *msg);
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int usb_buf_submit(struct msgb *msg);
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struct llist_head *usb_get_queue(uint8_t ep);
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int usb_drain_queue(uint8_t ep);
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void usb_buf_init(void);
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struct usb_buffered_ep *usb_get_buf_ep(uint8_t ep);
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int usb_refill_to_host(uint8_t ep);
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int usb_refill_from_host(uint8_t ep);
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