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usb: Add buffer alignment checks

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EDCI/EHCI controllers only allow 0x1000 aligned buffers.
So reply with a specific error type instead of a EP xfer error.
This commit is contained in:
CTCaer
2020-11-26 01:54:10 +02:00
parent bd4517abab
commit caae685fab
3 changed files with 15 additions and 0 deletions
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9
bdk/usb/usbd.c
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@@ -1403,6 +1403,9 @@ static usb_ep_status_t _usbd_get_ep1_status(usb_dir_t dir)
int usb_device_ep1_out_read(u8 *buf, u32 len, u32 *bytes_read, bool sync)
{
if ((u32)buf % USB_EP_BUFFER_ALIGN)
return USB2_ERROR_XFER_NOT_ALIGNED;
if (len > USB_EP_BUFFER_MAX_SIZE)
len = USB_EP_BUFFER_MAX_SIZE;
@@ -1416,6 +1419,9 @@ int usb_device_ep1_out_read(u8 *buf, u32 len, u32 *bytes_read, bool sync)
int usb_device_ep1_out_read_big(u8 *buf, u32 len, u32 *bytes_read)
{
if ((u32)buf % USB_EP_BUFFER_ALIGN)
return USB2_ERROR_XFER_NOT_ALIGNED;
if (len > USB_EP_BULK_OUT_MAX_XFER)
len = USB_EP_BULK_OUT_MAX_XFER;
@@ -1475,6 +1481,9 @@ int usb_device_ep1_out_reading_finish(u32 *pending_bytes, int tries)
int usb_device_ep1_in_write(u8 *buf, u32 len, u32 *bytes_written, bool sync)
{
if ((u32)buf % USB_EP_BUFFER_ALIGN)
return USB2_ERROR_XFER_NOT_ALIGNED;
if (len > USB_EP_BUFFER_MAX_SIZE)
len = USB_EP_BUFFER_MAX_SIZE;