Commit 8495036e authored by Felipe Balbi's avatar Felipe Balbi

usb: dwc3: increase maximum number of TRBs per endpoint

previously we were using a maximum of 32 TRBs per
endpoint. With each TRB being 16 bytes long, we were
using 512 bytes of memory for each endpoint.

However, SLAB/SLUB will always allocate PAGE_SIZE
chunks. In order to better utilize the memory we
allocate and to allow deeper queues for gadgets
which would benefit from it (g_ether comes to mind),
let's increase the maximum to 256 TRBs which rounds
up to 4096 bytes for each endpoint.
Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
parent ca4d44ea
...@@ -438,7 +438,7 @@ struct dwc3_event_buffer { ...@@ -438,7 +438,7 @@ struct dwc3_event_buffer {
#define DWC3_EP_DIRECTION_TX true #define DWC3_EP_DIRECTION_TX true
#define DWC3_EP_DIRECTION_RX false #define DWC3_EP_DIRECTION_RX false
#define DWC3_TRB_NUM 32 #define DWC3_TRB_NUM 256
#define DWC3_TRB_MASK (DWC3_TRB_NUM - 1) #define DWC3_TRB_MASK (DWC3_TRB_NUM - 1)
/** /**
......
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