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7369090a9f
Some gadget drivers are bad, bad boys. We notice that ADB was passing bad Burst Size which caused top bits of param0 to be overwritten which confused DWC3 when running this command. In order to avoid future issues, we're going to make sure values passed by macros are always safe for the controller. Note that ADB still needs a fix to *not* pass bad values. Cc: <stable@vger.kernel.org> # v3.2+ Reported-by: Mohamed Abbas <mohamed.abbas@intel.com> Sugested-by: Adam Andruszak <adam.andruszak@intel.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
105 lines
3.5 KiB
C
105 lines
3.5 KiB
C
/**
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* gadget.h - DesignWare USB3 DRD Gadget Header
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*
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* Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
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*
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* Authors: Felipe Balbi <balbi@ti.com>,
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* Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 of
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* the License as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef __DRIVERS_USB_DWC3_GADGET_H
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#define __DRIVERS_USB_DWC3_GADGET_H
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#include <linux/list.h>
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#include <linux/usb/gadget.h>
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#include "io.h"
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struct dwc3;
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#define to_dwc3_ep(ep) (container_of(ep, struct dwc3_ep, endpoint))
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#define gadget_to_dwc(g) (container_of(g, struct dwc3, gadget))
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/* DEPCFG parameter 1 */
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#define DWC3_DEPCFG_INT_NUM(n) (((n) & 0x1f) << 0)
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#define DWC3_DEPCFG_XFER_COMPLETE_EN (1 << 8)
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#define DWC3_DEPCFG_XFER_IN_PROGRESS_EN (1 << 9)
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#define DWC3_DEPCFG_XFER_NOT_READY_EN (1 << 10)
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#define DWC3_DEPCFG_FIFO_ERROR_EN (1 << 11)
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#define DWC3_DEPCFG_STREAM_EVENT_EN (1 << 13)
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#define DWC3_DEPCFG_BINTERVAL_M1(n) (((n) & 0xff) << 16)
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#define DWC3_DEPCFG_STREAM_CAPABLE (1 << 24)
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#define DWC3_DEPCFG_EP_NUMBER(n) (((n) & 0x1f) << 25)
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#define DWC3_DEPCFG_BULK_BASED (1 << 30)
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#define DWC3_DEPCFG_FIFO_BASED (1 << 31)
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/* DEPCFG parameter 0 */
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#define DWC3_DEPCFG_EP_TYPE(n) (((n) & 0x3) << 1)
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#define DWC3_DEPCFG_MAX_PACKET_SIZE(n) (((n) & 0x7ff) << 3)
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#define DWC3_DEPCFG_FIFO_NUMBER(n) (((n) & 0x1f) << 17)
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#define DWC3_DEPCFG_BURST_SIZE(n) (((n) & 0xf) << 22)
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#define DWC3_DEPCFG_DATA_SEQ_NUM(n) ((n) << 26)
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/* This applies for core versions earlier than 1.94a */
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#define DWC3_DEPCFG_IGN_SEQ_NUM (1 << 31)
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/* These apply for core versions 1.94a and later */
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#define DWC3_DEPCFG_ACTION_INIT (0 << 30)
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#define DWC3_DEPCFG_ACTION_RESTORE (1 << 30)
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#define DWC3_DEPCFG_ACTION_MODIFY (2 << 30)
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/* DEPXFERCFG parameter 0 */
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#define DWC3_DEPXFERCFG_NUM_XFER_RES(n) ((n) & 0xffff)
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/* -------------------------------------------------------------------------- */
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#define to_dwc3_request(r) (container_of(r, struct dwc3_request, request))
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static inline struct dwc3_request *next_request(struct list_head *list)
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{
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return list_first_entry_or_null(list, struct dwc3_request, list);
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}
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static inline void dwc3_gadget_move_started_request(struct dwc3_request *req)
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{
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struct dwc3_ep *dep = req->dep;
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req->started = true;
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list_move_tail(&req->list, &dep->started_list);
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}
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void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,
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int status);
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void dwc3_ep0_interrupt(struct dwc3 *dwc,
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const struct dwc3_event_depevt *event);
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void dwc3_ep0_out_start(struct dwc3 *dwc);
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int __dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value);
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int dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value);
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int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request,
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gfp_t gfp_flags);
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int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value, int protocol);
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/**
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* dwc3_gadget_ep_get_transfer_index - Gets transfer index from HW
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* @dwc: DesignWare USB3 Pointer
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* @number: DWC endpoint number
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*
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* Caller should take care of locking
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*/
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static inline u32 dwc3_gadget_ep_get_transfer_index(struct dwc3_ep *dep)
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{
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u32 res_id;
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res_id = dwc3_readl(dep->regs, DWC3_DEPCMD);
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return DWC3_DEPCMD_GET_RSC_IDX(res_id);
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}
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#endif /* __DRIVERS_USB_DWC3_GADGET_H */
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