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usb: ci_udc: Support larger packets

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ci_ep_queue() currently only fills in the page0/page1 fields in the
queue item. If the buffer is larger than 4KiB (unaligned) or 8KiB
(page-aligned), then this prevents the HW from knowing where to write
the balance of the data.

Fix this by initializing all 5 pageN pointers, which allows up to
16KiB (potentially non-page-aligned) buffers.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
This commit is contained in:
Stephen Warren 2014-04-24 17:52:36 -06:00 • committed by Marek Vasut
parent 672ad18c27
commit f5c03006dd
1 changed files with 3 additions and 0 deletions
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3
drivers/usb/gadget/ci_udc.c
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@ -350,6 +350,9 @@ static int ci_ep_queue(struct usb_ep *ep,
item->info = INFO_BYTES(len) | INFO_IOC | INFO_ACTIVE;
item->page0 = (uint32_t)ci_ep->b_buf;
item->page1 = ((uint32_t)ci_ep->b_buf & 0xfffff000) + 0x1000;
item->page2 = ((uint32_t)ci_ep->b_buf & 0xfffff000) + 0x2000;
item->page3 = ((uint32_t)ci_ep->b_buf & 0xfffff000) + 0x3000;
item->page4 = ((uint32_t)ci_ep->b_buf & 0xfffff000) + 0x4000;
ci_flush_qtd(num);
head->next = (unsigned) item;