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| author | Felipe Balbi <felipe.balbi@linux.intel.com> | 2017-01-05 14:46:52 +0200 |
|---|---|---|
| committer | Felipe Balbi <felipe.balbi@linux.intel.com> | 2017-01-24 11:04:12 +0200 |
| commit | 905dc04ea796e77e003c5020a3f9f1509cc7a275 (patch) | |
| tree | 7c67cb4d2e0f4717043803028426790e07ff7aa9 /drivers/usb/dwc3/core.h | |
| parent | e49d3cf4926af0ff713238acd31514e50f1004ec (diff) | |
| download | linux-905dc04ea796e77e003c5020a3f9f1509cc7a275.tar.bz2 | |
usb: dwc3: gadget: allocate bounce buffer for unaligned xfers
Allocate a coherent buffer of 1024 bytes (size of a single superspeed
bulk packet) to serve as bounce buffer for an extra TRB needed to align
transfers to wMaxPacketSize.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'drivers/usb/dwc3/core.h')
| -rw-r--r-- | drivers/usb/dwc3/core.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 14b760209680..9b4b79ae0beb 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -40,6 +40,7 @@ /* Global constants */ #define DWC3_PULL_UP_TIMEOUT 500 /* ms */ #define DWC3_ZLP_BUF_SIZE 1024 /* size of a superspeed bulk */ +#define DWC3_BOUNCE_SIZE 1024 /* size of a superspeed bulk */ #define DWC3_EP0_BOUNCE_SIZE 512 #define DWC3_ENDPOINTS_NUM 32 #define DWC3_XHCI_RESOURCES_NUM 2 @@ -857,12 +858,14 @@ struct dwc3_scratchpad_array { struct dwc3 { struct usb_ctrlrequest *ctrl_req; struct dwc3_trb *ep0_trb; + void *bounce; void *ep0_bounce; void *zlp_buf; void *scratchbuf; u8 *setup_buf; dma_addr_t ctrl_req_addr; dma_addr_t ep0_trb_addr; + dma_addr_t bounce_addr; dma_addr_t ep0_bounce_addr; dma_addr_t scratch_addr; struct dwc3_request ep0_usb_req; |