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refractor hcd API to allow queue xfer without actually transferring data

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hathach
2013-09-23 00:24:51 +07:00
parent a8a10e8650
commit 85f3ad9d3b
3 changed files with 22 additions and 16 deletions
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19
tinyusb/host/ehci/ehci.c
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@@ -402,7 +402,7 @@ pipe_handle_t hcd_pipe_open(uint8_t dev_addr, tusb_descriptor_endpoint_t const *
return (pipe_handle_t) { .dev_addr = dev_addr, .xfer_type = p_endpoint_desc->bmAttributes.xfer, .index = qhd_get_index(p_qhd) };
}
tusb_error_t hcd_pipe_xfer(pipe_handle_t pipe_hdl, uint8_t buffer[], uint16_t total_bytes, bool int_on_complete)
tusb_error_t hcd_pipe_queue_xfer(pipe_handle_t pipe_hdl, uint8_t buffer[], uint16_t total_bytes)
{
//------------- TODO pipe handle validate -------------//
@@ -414,7 +414,6 @@ tusb_error_t hcd_pipe_xfer(pipe_handle_t pipe_hdl, uint8_t buffer[], uint16_t t
qtd_init(p_qtd, (uint32_t) buffer, total_bytes);
p_qtd->pid = p_qhd->pid_non_control;
p_qtd->int_on_complete = int_on_complete ? 1 : 0;
//------------- insert TD to TD list -------------//
qtd_insert_to_qhd(p_qhd, p_qtd);
@@ -422,6 +421,21 @@ tusb_error_t hcd_pipe_xfer(pipe_handle_t pipe_hdl, uint8_t buffer[], uint16_t t
return TUSB_ERROR_NONE;
}
tusb_error_t hcd_pipe_xfer(pipe_handle_t pipe_hdl, uint8_t buffer[], uint16_t total_bytes, bool int_on_complete)
{
hcd_pipe_queue_xfer(pipe_hdl, buffer, total_bytes);
ehci_qhd_t *p_qhd = qhd_get_from_pipe_handle(pipe_hdl);
if ( int_on_complete )
{ // the just added qtd is pointed by list_tail
p_qhd->p_qtd_list_tail->int_on_complete = 1;
}
p_qhd->qtd_overlay.next.address = (uint32_t) p_qhd->p_qtd_list_head; // attach to queue head to start transferring
return TUSB_ERROR_NONE;
}
/// pipe_close should only be called as a part of unmount/safe-remove process
tusb_error_t hcd_pipe_close(pipe_handle_t pipe_hdl)
{
@@ -882,7 +896,6 @@ static inline void qtd_insert_to_qhd(ehci_qhd_t *p_qhd, ehci_qtd_t *p_qtd_new)
if (p_qhd->p_qtd_list_head == NULL) // empty list
{
p_qhd->p_qtd_list_head = p_qhd->p_qtd_list_tail = p_qtd_new;
p_qhd->qtd_overlay.next.address = (uint32_t) p_qtd_new;
}else
{
p_qhd->p_qtd_list_tail->next.address = (uint32_t) p_qtd_new;