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b4c53b4ac6
Added delayed status support for Control transfers. Tested in all 3 modes: Slave, BDMA and DDMA. Performed tests: USB CV (Ch9 and MSC), Control Read/Write tests using Synopsys USB test environment function driver. Signed-off-by: Minas Harutyunyan <hminas@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
1471 lines
59 KiB
C
1471 lines
59 KiB
C
// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
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/*
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* core.h - DesignWare HS OTG Controller common declarations
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*
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* Copyright (C) 2004-2013 Synopsys, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The names of the above-listed copyright holders may not be used
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* to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* ALTERNATIVELY, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option) any
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* later version.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __DWC2_CORE_H__
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#define __DWC2_CORE_H__
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#include <linux/phy/phy.h>
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#include <linux/regulator/consumer.h>
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#include <linux/usb/gadget.h>
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#include <linux/usb/otg.h>
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#include <linux/usb/phy.h>
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#include "hw.h"
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/*
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* Suggested defines for tracers:
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* - no_printk: Disable tracing
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* - pr_info: Print this info to the console
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* - trace_printk: Print this info to trace buffer (good for verbose logging)
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*/
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#define DWC2_TRACE_SCHEDULER no_printk
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#define DWC2_TRACE_SCHEDULER_VB no_printk
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/* Detailed scheduler tracing, but won't overwhelm console */
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#define dwc2_sch_dbg(hsotg, fmt, ...) \
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DWC2_TRACE_SCHEDULER(pr_fmt("%s: SCH: " fmt), \
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dev_name(hsotg->dev), ##__VA_ARGS__)
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/* Verbose scheduler tracing */
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#define dwc2_sch_vdbg(hsotg, fmt, ...) \
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DWC2_TRACE_SCHEDULER_VB(pr_fmt("%s: SCH: " fmt), \
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dev_name(hsotg->dev), ##__VA_ARGS__)
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/* Maximum number of Endpoints/HostChannels */
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#define MAX_EPS_CHANNELS 16
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/* dwc2-hsotg declarations */
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static const char * const dwc2_hsotg_supply_names[] = {
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"vusb_d", /* digital USB supply, 1.2V */
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"vusb_a", /* analog USB supply, 1.1V */
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};
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#define DWC2_NUM_SUPPLIES ARRAY_SIZE(dwc2_hsotg_supply_names)
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/*
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* EP0_MPS_LIMIT
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*
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* Unfortunately there seems to be a limit of the amount of data that can
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* be transferred by IN transactions on EP0. This is either 127 bytes or 3
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* packets (which practically means 1 packet and 63 bytes of data) when the
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* MPS is set to 64.
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*
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* This means if we are wanting to move >127 bytes of data, we need to
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* split the transactions up, but just doing one packet at a time does
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* not work (this may be an implicit DATA0 PID on first packet of the
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* transaction) and doing 2 packets is outside the controller's limits.
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*
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* If we try to lower the MPS size for EP0, then no transfers work properly
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* for EP0, and the system will fail basic enumeration. As no cause for this
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* has currently been found, we cannot support any large IN transfers for
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* EP0.
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*/
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#define EP0_MPS_LIMIT 64
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struct dwc2_hsotg;
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struct dwc2_hsotg_req;
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/**
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* struct dwc2_hsotg_ep - driver endpoint definition.
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* @ep: The gadget layer representation of the endpoint.
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* @name: The driver generated name for the endpoint.
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* @queue: Queue of requests for this endpoint.
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* @parent: Reference back to the parent device structure.
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* @req: The current request that the endpoint is processing. This is
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* used to indicate an request has been loaded onto the endpoint
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* and has yet to be completed (maybe due to data move, or simply
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* awaiting an ack from the core all the data has been completed).
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* @debugfs: File entry for debugfs file for this endpoint.
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* @dir_in: Set to true if this endpoint is of the IN direction, which
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* means that it is sending data to the Host.
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* @index: The index for the endpoint registers.
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* @mc: Multi Count - number of transactions per microframe
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* @interval: Interval for periodic endpoints, in frames or microframes.
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* @name: The name array passed to the USB core.
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* @halted: Set if the endpoint has been halted.
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* @periodic: Set if this is a periodic ep, such as Interrupt
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* @isochronous: Set if this is a isochronous ep
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* @send_zlp: Set if we need to send a zero-length packet.
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* @desc_list_dma: The DMA address of descriptor chain currently in use.
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* @desc_list: Pointer to descriptor DMA chain head currently in use.
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* @desc_count: Count of entries within the DMA descriptor chain of EP.
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* @next_desc: index of next free descriptor in the ISOC chain under SW control.
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* @compl_desc: index of next descriptor to be completed by xFerComplete
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* @total_data: The total number of data bytes done.
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* @fifo_size: The size of the FIFO (for periodic IN endpoints)
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* @fifo_index: For Dedicated FIFO operation, only FIFO0 can be used for EP0.
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* @fifo_load: The amount of data loaded into the FIFO (periodic IN)
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* @last_load: The offset of data for the last start of request.
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* @size_loaded: The last loaded size for DxEPTSIZE for periodic IN
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* @target_frame: Targeted frame num to setup next ISOC transfer
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* @frame_overrun: Indicates SOF number overrun in DSTS
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*
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* This is the driver's state for each registered enpoint, allowing it
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* to keep track of transactions that need doing. Each endpoint has a
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* lock to protect the state, to try and avoid using an overall lock
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* for the host controller as much as possible.
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*
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* For periodic IN endpoints, we have fifo_size and fifo_load to try
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* and keep track of the amount of data in the periodic FIFO for each
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* of these as we don't have a status register that tells us how much
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* is in each of them. (note, this may actually be useless information
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* as in shared-fifo mode periodic in acts like a single-frame packet
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* buffer than a fifo)
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*/
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struct dwc2_hsotg_ep {
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struct usb_ep ep;
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struct list_head queue;
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struct dwc2_hsotg *parent;
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struct dwc2_hsotg_req *req;
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struct dentry *debugfs;
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unsigned long total_data;
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unsigned int size_loaded;
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unsigned int last_load;
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unsigned int fifo_load;
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unsigned short fifo_size;
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unsigned short fifo_index;
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unsigned char dir_in;
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unsigned char index;
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unsigned char mc;
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u16 interval;
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unsigned int halted:1;
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unsigned int periodic:1;
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unsigned int isochronous:1;
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unsigned int send_zlp:1;
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unsigned int target_frame;
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#define TARGET_FRAME_INITIAL 0xFFFFFFFF
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bool frame_overrun;
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dma_addr_t desc_list_dma;
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struct dwc2_dma_desc *desc_list;
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u8 desc_count;
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unsigned int next_desc;
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unsigned int compl_desc;
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char name[10];
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};
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/**
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* struct dwc2_hsotg_req - data transfer request
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* @req: The USB gadget request
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* @queue: The list of requests for the endpoint this is queued for.
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* @saved_req_buf: variable to save req.buf when bounce buffers are used.
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*/
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struct dwc2_hsotg_req {
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struct usb_request req;
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struct list_head queue;
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void *saved_req_buf;
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};
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#if IS_ENABLED(CONFIG_USB_DWC2_PERIPHERAL) || \
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IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE)
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#define call_gadget(_hs, _entry) \
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do { \
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if ((_hs)->gadget.speed != USB_SPEED_UNKNOWN && \
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(_hs)->driver && (_hs)->driver->_entry) { \
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spin_unlock(&_hs->lock); \
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(_hs)->driver->_entry(&(_hs)->gadget); \
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spin_lock(&_hs->lock); \
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} \
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} while (0)
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#else
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#define call_gadget(_hs, _entry) do {} while (0)
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#endif
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struct dwc2_hsotg;
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struct dwc2_host_chan;
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/* Device States */
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enum dwc2_lx_state {
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DWC2_L0, /* On state */
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DWC2_L1, /* LPM sleep state */
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DWC2_L2, /* USB suspend state */
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DWC2_L3, /* Off state */
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};
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/* Gadget ep0 states */
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enum dwc2_ep0_state {
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DWC2_EP0_SETUP,
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DWC2_EP0_DATA_IN,
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DWC2_EP0_DATA_OUT,
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DWC2_EP0_STATUS_IN,
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DWC2_EP0_STATUS_OUT,
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};
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/**
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* struct dwc2_core_params - Parameters for configuring the core
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*
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* @otg_cap: Specifies the OTG capabilities.
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* 0 - HNP and SRP capable
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* 1 - SRP Only capable
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* 2 - No HNP/SRP capable (always available)
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* Defaults to best available option (0, 1, then 2)
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* @host_dma: Specifies whether to use slave or DMA mode for accessing
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* the data FIFOs. The driver will automatically detect the
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* value for this parameter if none is specified.
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* 0 - Slave (always available)
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* 1 - DMA (default, if available)
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* @dma_desc_enable: When DMA mode is enabled, specifies whether to use
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* address DMA mode or descriptor DMA mode for accessing
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* the data FIFOs. The driver will automatically detect the
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* value for this if none is specified.
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* 0 - Address DMA
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* 1 - Descriptor DMA (default, if available)
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* @dma_desc_fs_enable: When DMA mode is enabled, specifies whether to use
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* address DMA mode or descriptor DMA mode for accessing
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* the data FIFOs in Full Speed mode only. The driver
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* will automatically detect the value for this if none is
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* specified.
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* 0 - Address DMA
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* 1 - Descriptor DMA in FS (default, if available)
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* @speed: Specifies the maximum speed of operation in host and
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* device mode. The actual speed depends on the speed of
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* the attached device and the value of phy_type.
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* 0 - High Speed
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* (default when phy_type is UTMI+ or ULPI)
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* 1 - Full Speed
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* (default when phy_type is Full Speed)
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* @enable_dynamic_fifo: 0 - Use coreConsultant-specified FIFO size parameters
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* 1 - Allow dynamic FIFO sizing (default, if available)
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* @en_multiple_tx_fifo: Specifies whether dedicated per-endpoint transmit FIFOs
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* are enabled for non-periodic IN endpoints in device
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* mode.
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* @host_rx_fifo_size: Number of 4-byte words in the Rx FIFO in host mode when
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* dynamic FIFO sizing is enabled
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* 16 to 32768
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* Actual maximum value is autodetected and also
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* the default.
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* @host_nperio_tx_fifo_size: Number of 4-byte words in the non-periodic Tx FIFO
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* in host mode when dynamic FIFO sizing is enabled
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* 16 to 32768
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* Actual maximum value is autodetected and also
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* the default.
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* @host_perio_tx_fifo_size: Number of 4-byte words in the periodic Tx FIFO in
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* host mode when dynamic FIFO sizing is enabled
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* 16 to 32768
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* Actual maximum value is autodetected and also
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* the default.
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* @max_transfer_size: The maximum transfer size supported, in bytes
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* 2047 to 65,535
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* Actual maximum value is autodetected and also
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* the default.
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* @max_packet_count: The maximum number of packets in a transfer
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* 15 to 511
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* Actual maximum value is autodetected and also
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* the default.
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* @host_channels: The number of host channel registers to use
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* 1 to 16
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* Actual maximum value is autodetected and also
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* the default.
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* @phy_type: Specifies the type of PHY interface to use. By default,
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* the driver will automatically detect the phy_type.
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* 0 - Full Speed Phy
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* 1 - UTMI+ Phy
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* 2 - ULPI Phy
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* Defaults to best available option (2, 1, then 0)
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* @phy_utmi_width: Specifies the UTMI+ Data Width (in bits). This parameter
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* is applicable for a phy_type of UTMI+ or ULPI. (For a
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* ULPI phy_type, this parameter indicates the data width
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* between the MAC and the ULPI Wrapper.) Also, this
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* parameter is applicable only if the OTG_HSPHY_WIDTH cC
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* parameter was set to "8 and 16 bits", meaning that the
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* core has been configured to work at either data path
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* width.
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* 8 or 16 (default 16 if available)
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* @phy_ulpi_ddr: Specifies whether the ULPI operates at double or single
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* data rate. This parameter is only applicable if phy_type
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* is ULPI.
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* 0 - single data rate ULPI interface with 8 bit wide
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* data bus (default)
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* 1 - double data rate ULPI interface with 4 bit wide
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* data bus
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* @phy_ulpi_ext_vbus: For a ULPI phy, specifies whether to use the internal or
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* external supply to drive the VBus
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* 0 - Internal supply (default)
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* 1 - External supply
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* @i2c_enable: Specifies whether to use the I2Cinterface for a full
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* speed PHY. This parameter is only applicable if phy_type
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* is FS.
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* 0 - No (default)
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* 1 - Yes
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* @ipg_isoc_en: Indicates the IPG supports is enabled or disabled.
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* 0 - Disable (default)
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* 1 - Enable
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* @acg_enable: For enabling Active Clock Gating in the controller
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* 0 - No
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* 1 - Yes
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* @ulpi_fs_ls: Make ULPI phy operate in FS/LS mode only
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* 0 - No (default)
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* 1 - Yes
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* @host_support_fs_ls_low_power: Specifies whether low power mode is supported
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* when attached to a Full Speed or Low Speed device in
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* host mode.
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* 0 - Don't support low power mode (default)
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* 1 - Support low power mode
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* @host_ls_low_power_phy_clk: Specifies the PHY clock rate in low power mode
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* when connected to a Low Speed device in host
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* mode. This parameter is applicable only if
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* host_support_fs_ls_low_power is enabled.
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* 0 - 48 MHz
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* (default when phy_type is UTMI+ or ULPI)
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* 1 - 6 MHz
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* (default when phy_type is Full Speed)
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* @oc_disable: Flag to disable overcurrent condition.
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* 0 - Allow overcurrent condition to get detected
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* 1 - Disable overcurrent condtion to get detected
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* @ts_dline: Enable Term Select Dline pulsing
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* 0 - No (default)
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* 1 - Yes
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* @reload_ctl: Allow dynamic reloading of HFIR register during runtime
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* 0 - No (default for core < 2.92a)
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* 1 - Yes (default for core >= 2.92a)
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* @ahbcfg: This field allows the default value of the GAHBCFG
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* register to be overridden
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* -1 - GAHBCFG value will be set to 0x06
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* (INCR, default)
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* all others - GAHBCFG value will be overridden with
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* this value
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* Not all bits can be controlled like this, the
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* bits defined by GAHBCFG_CTRL_MASK are controlled
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* by the driver and are ignored in this
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* configuration value.
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* @uframe_sched: True to enable the microframe scheduler
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* @external_id_pin_ctl: Specifies whether ID pin is handled externally.
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* Disable CONIDSTSCHNG controller interrupt in such
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* case.
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* 0 - No (default)
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* 1 - Yes
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* @power_down: Specifies whether the controller support power_down.
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* If power_down is enabled, the controller will enter
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* power_down in both peripheral and host mode when
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* needed.
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* 0 - No (default)
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* 1 - Partial power down
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* 2 - Hibernation
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* @lpm: Enable LPM support.
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* 0 - No
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* 1 - Yes
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* @lpm_clock_gating: Enable core PHY clock gating.
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* 0 - No
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* 1 - Yes
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* @besl: Enable LPM Errata support.
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* 0 - No
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* 1 - Yes
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* @hird_threshold_en: HIRD or HIRD Threshold enable.
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* 0 - No
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* 1 - Yes
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* @hird_threshold: Value of BESL or HIRD Threshold.
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* @ref_clk_per: Indicates in terms of pico seconds the period
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* of ref_clk.
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* 62500 - 16MHz
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* 58823 - 17MHz
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* 52083 - 19.2MHz
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* 50000 - 20MHz
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* 41666 - 24MHz
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* 33333 - 30MHz (default)
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* 25000 - 40MHz
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* @sof_cnt_wkup_alert: Indicates in term of number of SOF's after which
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* the controller should generate an interrupt if the
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* device had been in L1 state until that period.
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* This is used by SW to initiate Remote WakeUp in the
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* controller so as to sync to the uF number from the host.
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* @activate_stm_fs_transceiver: Activate internal transceiver using GGPIO
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* register.
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* 0 - Deactivate the transceiver (default)
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* 1 - Activate the transceiver
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* @g_dma: Enables gadget dma usage (default: autodetect).
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* @g_dma_desc: Enables gadget descriptor DMA (default: autodetect).
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* @g_rx_fifo_size: The periodic rx fifo size for the device, in
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* DWORDS from 16-32768 (default: 2048 if
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* possible, otherwise autodetect).
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* @g_np_tx_fifo_size: The non-periodic tx fifo size for the device in
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* DWORDS from 16-32768 (default: 1024 if
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* possible, otherwise autodetect).
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* @g_tx_fifo_size: An array of TX fifo sizes in dedicated fifo
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* mode. Each value corresponds to one EP
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* starting from EP1 (max 15 values). Sizes are
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* in DWORDS with possible values from from
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* 16-32768 (default: 256, 256, 256, 256, 768,
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* 768, 768, 768, 0, 0, 0, 0, 0, 0, 0).
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* @change_speed_quirk: Change speed configuration to DWC2_SPEED_PARAM_FULL
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* while full&low speed device connect. And change speed
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* back to DWC2_SPEED_PARAM_HIGH while device is gone.
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* 0 - No (default)
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* 1 - Yes
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* @service_interval: Enable service interval based scheduling.
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* 0 - No
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* 1 - Yes
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*
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|
* The following parameters may be specified when starting the module. These
|
|
* parameters define how the DWC_otg controller should be configured. A
|
|
* value of -1 (or any other out of range value) for any parameter means
|
|
* to read the value from hardware (if possible) or use the builtin
|
|
* default described above.
|
|
*/
|
|
struct dwc2_core_params {
|
|
u8 otg_cap;
|
|
#define DWC2_CAP_PARAM_HNP_SRP_CAPABLE 0
|
|
#define DWC2_CAP_PARAM_SRP_ONLY_CAPABLE 1
|
|
#define DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE 2
|
|
|
|
u8 phy_type;
|
|
#define DWC2_PHY_TYPE_PARAM_FS 0
|
|
#define DWC2_PHY_TYPE_PARAM_UTMI 1
|
|
#define DWC2_PHY_TYPE_PARAM_ULPI 2
|
|
|
|
u8 speed;
|
|
#define DWC2_SPEED_PARAM_HIGH 0
|
|
#define DWC2_SPEED_PARAM_FULL 1
|
|
#define DWC2_SPEED_PARAM_LOW 2
|
|
|
|
u8 phy_utmi_width;
|
|
bool phy_ulpi_ddr;
|
|
bool phy_ulpi_ext_vbus;
|
|
bool enable_dynamic_fifo;
|
|
bool en_multiple_tx_fifo;
|
|
bool i2c_enable;
|
|
bool acg_enable;
|
|
bool ulpi_fs_ls;
|
|
bool ts_dline;
|
|
bool reload_ctl;
|
|
bool uframe_sched;
|
|
bool external_id_pin_ctl;
|
|
|
|
int power_down;
|
|
#define DWC2_POWER_DOWN_PARAM_NONE 0
|
|
#define DWC2_POWER_DOWN_PARAM_PARTIAL 1
|
|
#define DWC2_POWER_DOWN_PARAM_HIBERNATION 2
|
|
|
|
bool lpm;
|
|
bool lpm_clock_gating;
|
|
bool besl;
|
|
bool hird_threshold_en;
|
|
bool service_interval;
|
|
u8 hird_threshold;
|
|
bool activate_stm_fs_transceiver;
|
|
bool ipg_isoc_en;
|
|
u16 max_packet_count;
|
|
u32 max_transfer_size;
|
|
u32 ahbcfg;
|
|
|
|
/* GREFCLK parameters */
|
|
u32 ref_clk_per;
|
|
u16 sof_cnt_wkup_alert;
|
|
|
|
/* Host parameters */
|
|
bool host_dma;
|
|
bool dma_desc_enable;
|
|
bool dma_desc_fs_enable;
|
|
bool host_support_fs_ls_low_power;
|
|
bool host_ls_low_power_phy_clk;
|
|
bool oc_disable;
|
|
|
|
u8 host_channels;
|
|
u16 host_rx_fifo_size;
|
|
u16 host_nperio_tx_fifo_size;
|
|
u16 host_perio_tx_fifo_size;
|
|
|
|
/* Gadget parameters */
|
|
bool g_dma;
|
|
bool g_dma_desc;
|
|
u32 g_rx_fifo_size;
|
|
u32 g_np_tx_fifo_size;
|
|
u32 g_tx_fifo_size[MAX_EPS_CHANNELS];
|
|
|
|
bool change_speed_quirk;
|
|
};
|
|
|
|
/**
|
|
* struct dwc2_hw_params - Autodetected parameters.
|
|
*
|
|
* These parameters are the various parameters read from hardware
|
|
* registers during initialization. They typically contain the best
|
|
* supported or maximum value that can be configured in the
|
|
* corresponding dwc2_core_params value.
|
|
*
|
|
* The values that are not in dwc2_core_params are documented below.
|
|
*
|
|
* @op_mode: Mode of Operation
|
|
* 0 - HNP- and SRP-Capable OTG (Host & Device)
|
|
* 1 - SRP-Capable OTG (Host & Device)
|
|
* 2 - Non-HNP and Non-SRP Capable OTG (Host & Device)
|
|
* 3 - SRP-Capable Device
|
|
* 4 - Non-OTG Device
|
|
* 5 - SRP-Capable Host
|
|
* 6 - Non-OTG Host
|
|
* @arch: Architecture
|
|
* 0 - Slave only
|
|
* 1 - External DMA
|
|
* 2 - Internal DMA
|
|
* @ipg_isoc_en: This feature indicates that the controller supports
|
|
* the worst-case scenario of Rx followed by Rx
|
|
* Interpacket Gap (IPG) (32 bitTimes) as per the utmi
|
|
* specification for any token following ISOC OUT token.
|
|
* 0 - Don't support
|
|
* 1 - Support
|
|
* @power_optimized: Are power optimizations enabled?
|
|
* @num_dev_ep: Number of device endpoints available
|
|
* @num_dev_in_eps: Number of device IN endpoints available
|
|
* @num_dev_perio_in_ep: Number of device periodic IN endpoints
|
|
* available
|
|
* @dev_token_q_depth: Device Mode IN Token Sequence Learning Queue
|
|
* Depth
|
|
* 0 to 30
|
|
* @host_perio_tx_q_depth:
|
|
* Host Mode Periodic Request Queue Depth
|
|
* 2, 4 or 8
|
|
* @nperio_tx_q_depth:
|
|
* Non-Periodic Request Queue Depth
|
|
* 2, 4 or 8
|
|
* @hs_phy_type: High-speed PHY interface type
|
|
* 0 - High-speed interface not supported
|
|
* 1 - UTMI+
|
|
* 2 - ULPI
|
|
* 3 - UTMI+ and ULPI
|
|
* @fs_phy_type: Full-speed PHY interface type
|
|
* 0 - Full speed interface not supported
|
|
* 1 - Dedicated full speed interface
|
|
* 2 - FS pins shared with UTMI+ pins
|
|
* 3 - FS pins shared with ULPI pins
|
|
* @total_fifo_size: Total internal RAM for FIFOs (bytes)
|
|
* @hibernation: Is hibernation enabled?
|
|
* @utmi_phy_data_width: UTMI+ PHY data width
|
|
* 0 - 8 bits
|
|
* 1 - 16 bits
|
|
* 2 - 8 or 16 bits
|
|
* @snpsid: Value from SNPSID register
|
|
* @dev_ep_dirs: Direction of device endpoints (GHWCFG1)
|
|
* @g_tx_fifo_size: Power-on values of TxFIFO sizes
|
|
* @dma_desc_enable: When DMA mode is enabled, specifies whether to use
|
|
* address DMA mode or descriptor DMA mode for accessing
|
|
* the data FIFOs. The driver will automatically detect the
|
|
* value for this if none is specified.
|
|
* 0 - Address DMA
|
|
* 1 - Descriptor DMA (default, if available)
|
|
* @enable_dynamic_fifo: 0 - Use coreConsultant-specified FIFO size parameters
|
|
* 1 - Allow dynamic FIFO sizing (default, if available)
|
|
* @en_multiple_tx_fifo: Specifies whether dedicated per-endpoint transmit FIFOs
|
|
* are enabled for non-periodic IN endpoints in device
|
|
* mode.
|
|
* @host_nperio_tx_fifo_size: Number of 4-byte words in the non-periodic Tx FIFO
|
|
* in host mode when dynamic FIFO sizing is enabled
|
|
* 16 to 32768
|
|
* Actual maximum value is autodetected and also
|
|
* the default.
|
|
* @host_perio_tx_fifo_size: Number of 4-byte words in the periodic Tx FIFO in
|
|
* host mode when dynamic FIFO sizing is enabled
|
|
* 16 to 32768
|
|
* Actual maximum value is autodetected and also
|
|
* the default.
|
|
* @max_transfer_size: The maximum transfer size supported, in bytes
|
|
* 2047 to 65,535
|
|
* Actual maximum value is autodetected and also
|
|
* the default.
|
|
* @max_packet_count: The maximum number of packets in a transfer
|
|
* 15 to 511
|
|
* Actual maximum value is autodetected and also
|
|
* the default.
|
|
* @host_channels: The number of host channel registers to use
|
|
* 1 to 16
|
|
* Actual maximum value is autodetected and also
|
|
* the default.
|
|
* @dev_nperio_tx_fifo_size: Number of 4-byte words in the non-periodic Tx FIFO
|
|
* in device mode when dynamic FIFO sizing is enabled
|
|
* 16 to 32768
|
|
* Actual maximum value is autodetected and also
|
|
* the default.
|
|
* @i2c_enable: Specifies whether to use the I2Cinterface for a full
|
|
* speed PHY. This parameter is only applicable if phy_type
|
|
* is FS.
|
|
* 0 - No (default)
|
|
* 1 - Yes
|
|
* @acg_enable: For enabling Active Clock Gating in the controller
|
|
* 0 - Disable
|
|
* 1 - Enable
|
|
* @lpm_mode: For enabling Link Power Management in the controller
|
|
* 0 - Disable
|
|
* 1 - Enable
|
|
* @rx_fifo_size: Number of 4-byte words in the Rx FIFO when dynamic
|
|
* FIFO sizing is enabled 16 to 32768
|
|
* Actual maximum value is autodetected and also
|
|
* the default.
|
|
* @service_interval_mode: For enabling service interval based scheduling in the
|
|
* controller.
|
|
* 0 - Disable
|
|
* 1 - Enable
|
|
*/
|
|
struct dwc2_hw_params {
|
|
unsigned op_mode:3;
|
|
unsigned arch:2;
|
|
unsigned dma_desc_enable:1;
|
|
unsigned enable_dynamic_fifo:1;
|
|
unsigned en_multiple_tx_fifo:1;
|
|
unsigned rx_fifo_size:16;
|
|
unsigned host_nperio_tx_fifo_size:16;
|
|
unsigned dev_nperio_tx_fifo_size:16;
|
|
unsigned host_perio_tx_fifo_size:16;
|
|
unsigned nperio_tx_q_depth:3;
|
|
unsigned host_perio_tx_q_depth:3;
|
|
unsigned dev_token_q_depth:5;
|
|
unsigned max_transfer_size:26;
|
|
unsigned max_packet_count:11;
|
|
unsigned host_channels:5;
|
|
unsigned hs_phy_type:2;
|
|
unsigned fs_phy_type:2;
|
|
unsigned i2c_enable:1;
|
|
unsigned acg_enable:1;
|
|
unsigned num_dev_ep:4;
|
|
unsigned num_dev_in_eps : 4;
|
|
unsigned num_dev_perio_in_ep:4;
|
|
unsigned total_fifo_size:16;
|
|
unsigned power_optimized:1;
|
|
unsigned hibernation:1;
|
|
unsigned utmi_phy_data_width:2;
|
|
unsigned lpm_mode:1;
|
|
unsigned ipg_isoc_en:1;
|
|
unsigned service_interval_mode:1;
|
|
u32 snpsid;
|
|
u32 dev_ep_dirs;
|
|
u32 g_tx_fifo_size[MAX_EPS_CHANNELS];
|
|
};
|
|
|
|
/* Size of control and EP0 buffers */
|
|
#define DWC2_CTRL_BUFF_SIZE 8
|
|
|
|
/**
|
|
* struct dwc2_gregs_backup - Holds global registers state before
|
|
* entering partial power down
|
|
* @gotgctl: Backup of GOTGCTL register
|
|
* @gintmsk: Backup of GINTMSK register
|
|
* @gahbcfg: Backup of GAHBCFG register
|
|
* @gusbcfg: Backup of GUSBCFG register
|
|
* @grxfsiz: Backup of GRXFSIZ register
|
|
* @gnptxfsiz: Backup of GNPTXFSIZ register
|
|
* @gi2cctl: Backup of GI2CCTL register
|
|
* @glpmcfg: Backup of GLPMCFG register
|
|
* @gdfifocfg: Backup of GDFIFOCFG register
|
|
* @pcgcctl: Backup of PCGCCTL register
|
|
* @pcgcctl1: Backup of PCGCCTL1 register
|
|
* @dtxfsiz: Backup of DTXFSIZ registers for each endpoint
|
|
* @gpwrdn: Backup of GPWRDN register
|
|
* @valid: True if registers values backuped.
|
|
*/
|
|
struct dwc2_gregs_backup {
|
|
u32 gotgctl;
|
|
u32 gintmsk;
|
|
u32 gahbcfg;
|
|
u32 gusbcfg;
|
|
u32 grxfsiz;
|
|
u32 gnptxfsiz;
|
|
u32 gi2cctl;
|
|
u32 glpmcfg;
|
|
u32 pcgcctl;
|
|
u32 pcgcctl1;
|
|
u32 gdfifocfg;
|
|
u32 gpwrdn;
|
|
bool valid;
|
|
};
|
|
|
|
/**
|
|
* struct dwc2_dregs_backup - Holds device registers state before
|
|
* entering partial power down
|
|
* @dcfg: Backup of DCFG register
|
|
* @dctl: Backup of DCTL register
|
|
* @daintmsk: Backup of DAINTMSK register
|
|
* @diepmsk: Backup of DIEPMSK register
|
|
* @doepmsk: Backup of DOEPMSK register
|
|
* @diepctl: Backup of DIEPCTL register
|
|
* @dieptsiz: Backup of DIEPTSIZ register
|
|
* @diepdma: Backup of DIEPDMA register
|
|
* @doepctl: Backup of DOEPCTL register
|
|
* @doeptsiz: Backup of DOEPTSIZ register
|
|
* @doepdma: Backup of DOEPDMA register
|
|
* @dtxfsiz: Backup of DTXFSIZ registers for each endpoint
|
|
* @valid: True if registers values backuped.
|
|
*/
|
|
struct dwc2_dregs_backup {
|
|
u32 dcfg;
|
|
u32 dctl;
|
|
u32 daintmsk;
|
|
u32 diepmsk;
|
|
u32 doepmsk;
|
|
u32 diepctl[MAX_EPS_CHANNELS];
|
|
u32 dieptsiz[MAX_EPS_CHANNELS];
|
|
u32 diepdma[MAX_EPS_CHANNELS];
|
|
u32 doepctl[MAX_EPS_CHANNELS];
|
|
u32 doeptsiz[MAX_EPS_CHANNELS];
|
|
u32 doepdma[MAX_EPS_CHANNELS];
|
|
u32 dtxfsiz[MAX_EPS_CHANNELS];
|
|
bool valid;
|
|
};
|
|
|
|
/**
|
|
* struct dwc2_hregs_backup - Holds host registers state before
|
|
* entering partial power down
|
|
* @hcfg: Backup of HCFG register
|
|
* @haintmsk: Backup of HAINTMSK register
|
|
* @hcintmsk: Backup of HCINTMSK register
|
|
* @hprt0: Backup of HPTR0 register
|
|
* @hfir: Backup of HFIR register
|
|
* @hptxfsiz: Backup of HPTXFSIZ register
|
|
* @valid: True if registers values backuped.
|
|
*/
|
|
struct dwc2_hregs_backup {
|
|
u32 hcfg;
|
|
u32 haintmsk;
|
|
u32 hcintmsk[MAX_EPS_CHANNELS];
|
|
u32 hprt0;
|
|
u32 hfir;
|
|
u32 hptxfsiz;
|
|
bool valid;
|
|
};
|
|
|
|
/*
|
|
* Constants related to high speed periodic scheduling
|
|
*
|
|
* We have a periodic schedule that is DWC2_HS_SCHEDULE_UFRAMES long. From a
|
|
* reservation point of view it's assumed that the schedule goes right back to
|
|
* the beginning after the end of the schedule.
|
|
*
|
|
* What does that mean for scheduling things with a long interval? It means
|
|
* we'll reserve time for them in every possible microframe that they could
|
|
* ever be scheduled in. ...but we'll still only actually schedule them as
|
|
* often as they were requested.
|
|
*
|
|
* We keep our schedule in a "bitmap" structure. This simplifies having
|
|
* to keep track of and merge intervals: we just let the bitmap code do most
|
|
* of the heavy lifting. In a way scheduling is much like memory allocation.
|
|
*
|
|
* We schedule 100us per uframe or 80% of 125us (the maximum amount you're
|
|
* supposed to schedule for periodic transfers). That's according to spec.
|
|
*
|
|
* Note that though we only schedule 80% of each microframe, the bitmap that we
|
|
* keep the schedule in is tightly packed (AKA it doesn't have 100us worth of
|
|
* space for each uFrame).
|
|
*
|
|
* Requirements:
|
|
* - DWC2_HS_SCHEDULE_UFRAMES must even divide 0x4000 (HFNUM_MAX_FRNUM + 1)
|
|
* - DWC2_HS_SCHEDULE_UFRAMES must be 8 times DWC2_LS_SCHEDULE_FRAMES (probably
|
|
* could be any multiple of 8 times DWC2_LS_SCHEDULE_FRAMES, but there might
|
|
* be bugs). The 8 comes from the USB spec: number of microframes per frame.
|
|
*/
|
|
#define DWC2_US_PER_UFRAME 125
|
|
#define DWC2_HS_PERIODIC_US_PER_UFRAME 100
|
|
|
|
#define DWC2_HS_SCHEDULE_UFRAMES 8
|
|
#define DWC2_HS_SCHEDULE_US (DWC2_HS_SCHEDULE_UFRAMES * \
|
|
DWC2_HS_PERIODIC_US_PER_UFRAME)
|
|
|
|
/*
|
|
* Constants related to low speed scheduling
|
|
*
|
|
* For high speed we schedule every 1us. For low speed that's a bit overkill,
|
|
* so we make up a unit called a "slice" that's worth 25us. There are 40
|
|
* slices in a full frame and we can schedule 36 of those (90%) for periodic
|
|
* transfers.
|
|
*
|
|
* Our low speed schedule can be as short as 1 frame or could be longer. When
|
|
* we only schedule 1 frame it means that we'll need to reserve a time every
|
|
* frame even for things that only transfer very rarely, so something that runs
|
|
* every 2048 frames will get time reserved in every frame. Our low speed
|
|
* schedule can be longer and we'll be able to handle more overlap, but that
|
|
* will come at increased memory cost and increased time to schedule.
|
|
*
|
|
* Note: one other advantage of a short low speed schedule is that if we mess
|
|
* up and miss scheduling we can jump in and use any of the slots that we
|
|
* happened to reserve.
|
|
*
|
|
* With 25 us per slice and 1 frame in the schedule, we only need 4 bytes for
|
|
* the schedule. There will be one schedule per TT.
|
|
*
|
|
* Requirements:
|
|
* - DWC2_US_PER_SLICE must evenly divide DWC2_LS_PERIODIC_US_PER_FRAME.
|
|
*/
|
|
#define DWC2_US_PER_SLICE 25
|
|
#define DWC2_SLICES_PER_UFRAME (DWC2_US_PER_UFRAME / DWC2_US_PER_SLICE)
|
|
|
|
#define DWC2_ROUND_US_TO_SLICE(us) \
|
|
(DIV_ROUND_UP((us), DWC2_US_PER_SLICE) * \
|
|
DWC2_US_PER_SLICE)
|
|
|
|
#define DWC2_LS_PERIODIC_US_PER_FRAME \
|
|
900
|
|
#define DWC2_LS_PERIODIC_SLICES_PER_FRAME \
|
|
(DWC2_LS_PERIODIC_US_PER_FRAME / \
|
|
DWC2_US_PER_SLICE)
|
|
|
|
#define DWC2_LS_SCHEDULE_FRAMES 1
|
|
#define DWC2_LS_SCHEDULE_SLICES (DWC2_LS_SCHEDULE_FRAMES * \
|
|
DWC2_LS_PERIODIC_SLICES_PER_FRAME)
|
|
|
|
/**
|
|
* struct dwc2_hsotg - Holds the state of the driver, including the non-periodic
|
|
* and periodic schedules
|
|
*
|
|
* These are common for both host and peripheral modes:
|
|
*
|
|
* @dev: The struct device pointer
|
|
* @regs: Pointer to controller regs
|
|
* @hw_params: Parameters that were autodetected from the
|
|
* hardware registers
|
|
* @params: Parameters that define how the core should be configured
|
|
* @op_state: The operational State, during transitions (a_host=>
|
|
* a_peripheral and b_device=>b_host) this may not match
|
|
* the core, but allows the software to determine
|
|
* transitions
|
|
* @dr_mode: Requested mode of operation, one of following:
|
|
* - USB_DR_MODE_PERIPHERAL
|
|
* - USB_DR_MODE_HOST
|
|
* - USB_DR_MODE_OTG
|
|
* @hcd_enabled: Host mode sub-driver initialization indicator.
|
|
* @gadget_enabled: Peripheral mode sub-driver initialization indicator.
|
|
* @ll_hw_enabled: Status of low-level hardware resources.
|
|
* @hibernated: True if core is hibernated
|
|
* @reset_phy_on_wake: Quirk saying that we should assert PHY reset on a
|
|
* remote wakeup.
|
|
* @frame_number: Frame number read from the core. For both device
|
|
* and host modes. The value ranges are from 0
|
|
* to HFNUM_MAX_FRNUM.
|
|
* @phy: The otg phy transceiver structure for phy control.
|
|
* @uphy: The otg phy transceiver structure for old USB phy
|
|
* control.
|
|
* @plat: The platform specific configuration data. This can be
|
|
* removed once all SoCs support usb transceiver.
|
|
* @supplies: Definition of USB power supplies
|
|
* @vbus_supply: Regulator supplying vbus.
|
|
* @lock: Spinlock that protects all the driver data structures
|
|
* @priv: Stores a pointer to the struct usb_hcd
|
|
* @queuing_high_bandwidth: True if multiple packets of a high-bandwidth
|
|
* transfer are in process of being queued
|
|
* @srp_success: Stores status of SRP request in the case of a FS PHY
|
|
* with an I2C interface
|
|
* @wq_otg: Workqueue object used for handling of some interrupts
|
|
* @wf_otg: Work object for handling Connector ID Status Change
|
|
* interrupt
|
|
* @wkp_timer: Timer object for handling Wakeup Detected interrupt
|
|
* @lx_state: Lx state of connected device
|
|
* @gr_backup: Backup of global registers during suspend
|
|
* @dr_backup: Backup of device registers during suspend
|
|
* @hr_backup: Backup of host registers during suspend
|
|
* @needs_byte_swap: Specifies whether the opposite endianness.
|
|
*
|
|
* These are for host mode:
|
|
*
|
|
* @flags: Flags for handling root port state changes
|
|
* @flags.d32: Contain all root port flags
|
|
* @flags.b: Separate root port flags from each other
|
|
* @flags.b.port_connect_status_change: True if root port connect status
|
|
* changed
|
|
* @flags.b.port_connect_status: True if device connected to root port
|
|
* @flags.b.port_reset_change: True if root port reset status changed
|
|
* @flags.b.port_enable_change: True if root port enable status changed
|
|
* @flags.b.port_suspend_change: True if root port suspend status changed
|
|
* @flags.b.port_over_current_change: True if root port over current state
|
|
* changed.
|
|
* @flags.b.port_l1_change: True if root port l1 status changed
|
|
* @flags.b.reserved: Reserved bits of root port register
|
|
* @non_periodic_sched_inactive: Inactive QHs in the non-periodic schedule.
|
|
* Transfers associated with these QHs are not currently
|
|
* assigned to a host channel.
|
|
* @non_periodic_sched_active: Active QHs in the non-periodic schedule.
|
|
* Transfers associated with these QHs are currently
|
|
* assigned to a host channel.
|
|
* @non_periodic_qh_ptr: Pointer to next QH to process in the active
|
|
* non-periodic schedule
|
|
* @non_periodic_sched_waiting: Waiting QHs in the non-periodic schedule.
|
|
* Transfers associated with these QHs are not currently
|
|
* assigned to a host channel.
|
|
* @periodic_sched_inactive: Inactive QHs in the periodic schedule. This is a
|
|
* list of QHs for periodic transfers that are _not_
|
|
* scheduled for the next frame. Each QH in the list has an
|
|
* interval counter that determines when it needs to be
|
|
* scheduled for execution. This scheduling mechanism
|
|
* allows only a simple calculation for periodic bandwidth
|
|
* used (i.e. must assume that all periodic transfers may
|
|
* need to execute in the same frame). However, it greatly
|
|
* simplifies scheduling and should be sufficient for the
|
|
* vast majority of OTG hosts, which need to connect to a
|
|
* small number of peripherals at one time. Items move from
|
|
* this list to periodic_sched_ready when the QH interval
|
|
* counter is 0 at SOF.
|
|
* @periodic_sched_ready: List of periodic QHs that are ready for execution in
|
|
* the next frame, but have not yet been assigned to host
|
|
* channels. Items move from this list to
|
|
* periodic_sched_assigned as host channels become
|
|
* available during the current frame.
|
|
* @periodic_sched_assigned: List of periodic QHs to be executed in the next
|
|
* frame that are assigned to host channels. Items move
|
|
* from this list to periodic_sched_queued as the
|
|
* transactions for the QH are queued to the DWC_otg
|
|
* controller.
|
|
* @periodic_sched_queued: List of periodic QHs that have been queued for
|
|
* execution. Items move from this list to either
|
|
* periodic_sched_inactive or periodic_sched_ready when the
|
|
* channel associated with the transfer is released. If the
|
|
* interval for the QH is 1, the item moves to
|
|
* periodic_sched_ready because it must be rescheduled for
|
|
* the next frame. Otherwise, the item moves to
|
|
* periodic_sched_inactive.
|
|
* @split_order: List keeping track of channels doing splits, in order.
|
|
* @periodic_usecs: Total bandwidth claimed so far for periodic transfers.
|
|
* This value is in microseconds per (micro)frame. The
|
|
* assumption is that all periodic transfers may occur in
|
|
* the same (micro)frame.
|
|
* @hs_periodic_bitmap: Bitmap used by the microframe scheduler any time the
|
|
* host is in high speed mode; low speed schedules are
|
|
* stored elsewhere since we need one per TT.
|
|
* @periodic_qh_count: Count of periodic QHs, if using several eps. Used for
|
|
* SOF enable/disable.
|
|
* @free_hc_list: Free host channels in the controller. This is a list of
|
|
* struct dwc2_host_chan items.
|
|
* @periodic_channels: Number of host channels assigned to periodic transfers.
|
|
* Currently assuming that there is a dedicated host
|
|
* channel for each periodic transaction and at least one
|
|
* host channel is available for non-periodic transactions.
|
|
* @non_periodic_channels: Number of host channels assigned to non-periodic
|
|
* transfers
|
|
* @available_host_channels: Number of host channels available for the
|
|
* microframe scheduler to use
|
|
* @hc_ptr_array: Array of pointers to the host channel descriptors.
|
|
* Allows accessing a host channel descriptor given the
|
|
* host channel number. This is useful in interrupt
|
|
* handlers.
|
|
* @status_buf: Buffer used for data received during the status phase of
|
|
* a control transfer.
|
|
* @status_buf_dma: DMA address for status_buf
|
|
* @start_work: Delayed work for handling host A-cable connection
|
|
* @reset_work: Delayed work for handling a port reset
|
|
* @phy_reset_work: Work structure for doing a PHY reset
|
|
* @otg_port: OTG port number
|
|
* @frame_list: Frame list
|
|
* @frame_list_dma: Frame list DMA address
|
|
* @frame_list_sz: Frame list size
|
|
* @desc_gen_cache: Kmem cache for generic descriptors
|
|
* @desc_hsisoc_cache: Kmem cache for hs isochronous descriptors
|
|
* @unaligned_cache: Kmem cache for DMA mode to handle non-aligned buf
|
|
*
|
|
* These are for peripheral mode:
|
|
*
|
|
* @driver: USB gadget driver
|
|
* @dedicated_fifos: Set if the hardware has dedicated IN-EP fifos.
|
|
* @num_of_eps: Number of available EPs (excluding EP0)
|
|
* @debug_root: Root directrory for debugfs.
|
|
* @ep0_reply: Request used for ep0 reply.
|
|
* @ep0_buff: Buffer for EP0 reply data, if needed.
|
|
* @ctrl_buff: Buffer for EP0 control requests.
|
|
* @ctrl_req: Request for EP0 control packets.
|
|
* @ep0_state: EP0 control transfers state
|
|
* @delayed_status: true when gadget driver asks for delayed status
|
|
* @test_mode: USB test mode requested by the host
|
|
* @remote_wakeup_allowed: True if device is allowed to wake-up host by
|
|
* remote-wakeup signalling
|
|
* @setup_desc_dma: EP0 setup stage desc chain DMA address
|
|
* @setup_desc: EP0 setup stage desc chain pointer
|
|
* @ctrl_in_desc_dma: EP0 IN data phase desc chain DMA address
|
|
* @ctrl_in_desc: EP0 IN data phase desc chain pointer
|
|
* @ctrl_out_desc_dma: EP0 OUT data phase desc chain DMA address
|
|
* @ctrl_out_desc: EP0 OUT data phase desc chain pointer
|
|
* @irq: Interrupt request line number
|
|
* @clk: Pointer to otg clock
|
|
* @reset: Pointer to dwc2 reset controller
|
|
* @reset_ecc: Pointer to dwc2 optional reset controller in Stratix10.
|
|
* @regset: A pointer to a struct debugfs_regset32, which contains
|
|
* a pointer to an array of register definitions, the
|
|
* array size and the base address where the register bank
|
|
* is to be found.
|
|
* @bus_suspended: True if bus is suspended
|
|
* @last_frame_num: Number of last frame. Range from 0 to 32768
|
|
* @frame_num_array: Used only if CONFIG_USB_DWC2_TRACK_MISSED_SOFS is
|
|
* defined, for missed SOFs tracking. Array holds that
|
|
* frame numbers, which not equal to last_frame_num +1
|
|
* @last_frame_num_array: Used only if CONFIG_USB_DWC2_TRACK_MISSED_SOFS is
|
|
* defined, for missed SOFs tracking.
|
|
* If current_frame_number != last_frame_num+1
|
|
* then last_frame_num added to this array
|
|
* @frame_num_idx: Actual size of frame_num_array and last_frame_num_array
|
|
* @dumped_frame_num_array: 1 - if missed SOFs frame numbers dumbed
|
|
* 0 - if missed SOFs frame numbers not dumbed
|
|
* @fifo_mem: Total internal RAM for FIFOs (bytes)
|
|
* @fifo_map: Each bit intend for concrete fifo. If that bit is set,
|
|
* then that fifo is used
|
|
* @gadget: Represents a usb slave device
|
|
* @connected: Used in slave mode. True if device connected with host
|
|
* @eps_in: The IN endpoints being supplied to the gadget framework
|
|
* @eps_out: The OUT endpoints being supplied to the gadget framework
|
|
* @new_connection: Used in host mode. True if there are new connected
|
|
* device
|
|
* @enabled: Indicates the enabling state of controller
|
|
*
|
|
*/
|
|
struct dwc2_hsotg {
|
|
struct device *dev;
|
|
void __iomem *regs;
|
|
/** Params detected from hardware */
|
|
struct dwc2_hw_params hw_params;
|
|
/** Params to actually use */
|
|
struct dwc2_core_params params;
|
|
enum usb_otg_state op_state;
|
|
enum usb_dr_mode dr_mode;
|
|
unsigned int hcd_enabled:1;
|
|
unsigned int gadget_enabled:1;
|
|
unsigned int ll_hw_enabled:1;
|
|
unsigned int hibernated:1;
|
|
unsigned int reset_phy_on_wake:1;
|
|
u16 frame_number;
|
|
|
|
struct phy *phy;
|
|
struct usb_phy *uphy;
|
|
struct dwc2_hsotg_plat *plat;
|
|
struct regulator_bulk_data supplies[DWC2_NUM_SUPPLIES];
|
|
struct regulator *vbus_supply;
|
|
|
|
spinlock_t lock;
|
|
void *priv;
|
|
int irq;
|
|
struct clk *clk;
|
|
struct reset_control *reset;
|
|
struct reset_control *reset_ecc;
|
|
|
|
unsigned int queuing_high_bandwidth:1;
|
|
unsigned int srp_success:1;
|
|
|
|
struct workqueue_struct *wq_otg;
|
|
struct work_struct wf_otg;
|
|
struct timer_list wkp_timer;
|
|
enum dwc2_lx_state lx_state;
|
|
struct dwc2_gregs_backup gr_backup;
|
|
struct dwc2_dregs_backup dr_backup;
|
|
struct dwc2_hregs_backup hr_backup;
|
|
|
|
struct dentry *debug_root;
|
|
struct debugfs_regset32 *regset;
|
|
bool needs_byte_swap;
|
|
|
|
/* DWC OTG HW Release versions */
|
|
#define DWC2_CORE_REV_2_71a 0x4f54271a
|
|
#define DWC2_CORE_REV_2_72a 0x4f54272a
|
|
#define DWC2_CORE_REV_2_80a 0x4f54280a
|
|
#define DWC2_CORE_REV_2_90a 0x4f54290a
|
|
#define DWC2_CORE_REV_2_91a 0x4f54291a
|
|
#define DWC2_CORE_REV_2_92a 0x4f54292a
|
|
#define DWC2_CORE_REV_2_94a 0x4f54294a
|
|
#define DWC2_CORE_REV_3_00a 0x4f54300a
|
|
#define DWC2_CORE_REV_3_10a 0x4f54310a
|
|
#define DWC2_CORE_REV_4_00a 0x4f54400a
|
|
#define DWC2_FS_IOT_REV_1_00a 0x5531100a
|
|
#define DWC2_HS_IOT_REV_1_00a 0x5532100a
|
|
|
|
/* DWC OTG HW Core ID */
|
|
#define DWC2_OTG_ID 0x4f540000
|
|
#define DWC2_FS_IOT_ID 0x55310000
|
|
#define DWC2_HS_IOT_ID 0x55320000
|
|
|
|
#if IS_ENABLED(CONFIG_USB_DWC2_HOST) || IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE)
|
|
union dwc2_hcd_internal_flags {
|
|
u32 d32;
|
|
struct {
|
|
unsigned port_connect_status_change:1;
|
|
unsigned port_connect_status:1;
|
|
unsigned port_reset_change:1;
|
|
unsigned port_enable_change:1;
|
|
unsigned port_suspend_change:1;
|
|
unsigned port_over_current_change:1;
|
|
unsigned port_l1_change:1;
|
|
unsigned reserved:25;
|
|
} b;
|
|
} flags;
|
|
|
|
struct list_head non_periodic_sched_inactive;
|
|
struct list_head non_periodic_sched_waiting;
|
|
struct list_head non_periodic_sched_active;
|
|
struct list_head *non_periodic_qh_ptr;
|
|
struct list_head periodic_sched_inactive;
|
|
struct list_head periodic_sched_ready;
|
|
struct list_head periodic_sched_assigned;
|
|
struct list_head periodic_sched_queued;
|
|
struct list_head split_order;
|
|
u16 periodic_usecs;
|
|
unsigned long hs_periodic_bitmap[
|
|
DIV_ROUND_UP(DWC2_HS_SCHEDULE_US, BITS_PER_LONG)];
|
|
u16 periodic_qh_count;
|
|
bool bus_suspended;
|
|
bool new_connection;
|
|
|
|
u16 last_frame_num;
|
|
|
|
#ifdef CONFIG_USB_DWC2_TRACK_MISSED_SOFS
|
|
#define FRAME_NUM_ARRAY_SIZE 1000
|
|
u16 *frame_num_array;
|
|
u16 *last_frame_num_array;
|
|
int frame_num_idx;
|
|
int dumped_frame_num_array;
|
|
#endif
|
|
|
|
struct list_head free_hc_list;
|
|
int periodic_channels;
|
|
int non_periodic_channels;
|
|
int available_host_channels;
|
|
struct dwc2_host_chan *hc_ptr_array[MAX_EPS_CHANNELS];
|
|
u8 *status_buf;
|
|
dma_addr_t status_buf_dma;
|
|
#define DWC2_HCD_STATUS_BUF_SIZE 64
|
|
|
|
struct delayed_work start_work;
|
|
struct delayed_work reset_work;
|
|
struct work_struct phy_reset_work;
|
|
u8 otg_port;
|
|
u32 *frame_list;
|
|
dma_addr_t frame_list_dma;
|
|
u32 frame_list_sz;
|
|
struct kmem_cache *desc_gen_cache;
|
|
struct kmem_cache *desc_hsisoc_cache;
|
|
struct kmem_cache *unaligned_cache;
|
|
#define DWC2_KMEM_UNALIGNED_BUF_SIZE 1024
|
|
|
|
#endif /* CONFIG_USB_DWC2_HOST || CONFIG_USB_DWC2_DUAL_ROLE */
|
|
|
|
#if IS_ENABLED(CONFIG_USB_DWC2_PERIPHERAL) || \
|
|
IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE)
|
|
/* Gadget structures */
|
|
struct usb_gadget_driver *driver;
|
|
int fifo_mem;
|
|
unsigned int dedicated_fifos:1;
|
|
unsigned char num_of_eps;
|
|
u32 fifo_map;
|
|
|
|
struct usb_request *ep0_reply;
|
|
struct usb_request *ctrl_req;
|
|
void *ep0_buff;
|
|
void *ctrl_buff;
|
|
enum dwc2_ep0_state ep0_state;
|
|
unsigned delayed_status : 1;
|
|
u8 test_mode;
|
|
|
|
dma_addr_t setup_desc_dma[2];
|
|
struct dwc2_dma_desc *setup_desc[2];
|
|
dma_addr_t ctrl_in_desc_dma;
|
|
struct dwc2_dma_desc *ctrl_in_desc;
|
|
dma_addr_t ctrl_out_desc_dma;
|
|
struct dwc2_dma_desc *ctrl_out_desc;
|
|
|
|
struct usb_gadget gadget;
|
|
unsigned int enabled:1;
|
|
unsigned int connected:1;
|
|
unsigned int remote_wakeup_allowed:1;
|
|
struct dwc2_hsotg_ep *eps_in[MAX_EPS_CHANNELS];
|
|
struct dwc2_hsotg_ep *eps_out[MAX_EPS_CHANNELS];
|
|
#endif /* CONFIG_USB_DWC2_PERIPHERAL || CONFIG_USB_DWC2_DUAL_ROLE */
|
|
};
|
|
|
|
/* Normal architectures just use readl/write */
|
|
static inline u32 dwc2_readl(struct dwc2_hsotg *hsotg, u32 offset)
|
|
{
|
|
u32 val;
|
|
|
|
val = readl(hsotg->regs + offset);
|
|
if (hsotg->needs_byte_swap)
|
|
return swab32(val);
|
|
else
|
|
return val;
|
|
}
|
|
|
|
static inline void dwc2_writel(struct dwc2_hsotg *hsotg, u32 value, u32 offset)
|
|
{
|
|
if (hsotg->needs_byte_swap)
|
|
writel(swab32(value), hsotg->regs + offset);
|
|
else
|
|
writel(value, hsotg->regs + offset);
|
|
|
|
#ifdef DWC2_LOG_WRITES
|
|
pr_info("info:: wrote %08x to %p\n", value, hsotg->regs + offset);
|
|
#endif
|
|
}
|
|
|
|
static inline void dwc2_readl_rep(struct dwc2_hsotg *hsotg, u32 offset,
|
|
void *buffer, unsigned int count)
|
|
{
|
|
if (count) {
|
|
u32 *buf = buffer;
|
|
|
|
do {
|
|
u32 x = dwc2_readl(hsotg, offset);
|
|
*buf++ = x;
|
|
} while (--count);
|
|
}
|
|
}
|
|
|
|
static inline void dwc2_writel_rep(struct dwc2_hsotg *hsotg, u32 offset,
|
|
const void *buffer, unsigned int count)
|
|
{
|
|
if (count) {
|
|
const u32 *buf = buffer;
|
|
|
|
do {
|
|
dwc2_writel(hsotg, *buf++, offset);
|
|
} while (--count);
|
|
}
|
|
}
|
|
|
|
/* Reasons for halting a host channel */
|
|
enum dwc2_halt_status {
|
|
DWC2_HC_XFER_NO_HALT_STATUS,
|
|
DWC2_HC_XFER_COMPLETE,
|
|
DWC2_HC_XFER_URB_COMPLETE,
|
|
DWC2_HC_XFER_ACK,
|
|
DWC2_HC_XFER_NAK,
|
|
DWC2_HC_XFER_NYET,
|
|
DWC2_HC_XFER_STALL,
|
|
DWC2_HC_XFER_XACT_ERR,
|
|
DWC2_HC_XFER_FRAME_OVERRUN,
|
|
DWC2_HC_XFER_BABBLE_ERR,
|
|
DWC2_HC_XFER_DATA_TOGGLE_ERR,
|
|
DWC2_HC_XFER_AHB_ERR,
|
|
DWC2_HC_XFER_PERIODIC_INCOMPLETE,
|
|
DWC2_HC_XFER_URB_DEQUEUE,
|
|
};
|
|
|
|
/* Core version information */
|
|
static inline bool dwc2_is_iot(struct dwc2_hsotg *hsotg)
|
|
{
|
|
return (hsotg->hw_params.snpsid & 0xfff00000) == 0x55300000;
|
|
}
|
|
|
|
static inline bool dwc2_is_fs_iot(struct dwc2_hsotg *hsotg)
|
|
{
|
|
return (hsotg->hw_params.snpsid & 0xffff0000) == 0x55310000;
|
|
}
|
|
|
|
static inline bool dwc2_is_hs_iot(struct dwc2_hsotg *hsotg)
|
|
{
|
|
return (hsotg->hw_params.snpsid & 0xffff0000) == 0x55320000;
|
|
}
|
|
|
|
/*
|
|
* The following functions support initialization of the core driver component
|
|
* and the DWC_otg controller
|
|
*/
|
|
int dwc2_core_reset(struct dwc2_hsotg *hsotg, bool skip_wait);
|
|
int dwc2_enter_partial_power_down(struct dwc2_hsotg *hsotg);
|
|
int dwc2_exit_partial_power_down(struct dwc2_hsotg *hsotg, bool restore);
|
|
int dwc2_enter_hibernation(struct dwc2_hsotg *hsotg, int is_host);
|
|
int dwc2_exit_hibernation(struct dwc2_hsotg *hsotg, int rem_wakeup,
|
|
int reset, int is_host);
|
|
void dwc2_init_fs_ls_pclk_sel(struct dwc2_hsotg *hsotg);
|
|
int dwc2_phy_init(struct dwc2_hsotg *hsotg, bool select_phy);
|
|
|
|
void dwc2_force_mode(struct dwc2_hsotg *hsotg, bool host);
|
|
void dwc2_force_dr_mode(struct dwc2_hsotg *hsotg);
|
|
|
|
bool dwc2_is_controller_alive(struct dwc2_hsotg *hsotg);
|
|
|
|
/*
|
|
* Common core Functions.
|
|
* The following functions support managing the DWC_otg controller in either
|
|
* device or host mode.
|
|
*/
|
|
void dwc2_read_packet(struct dwc2_hsotg *hsotg, u8 *dest, u16 bytes);
|
|
void dwc2_flush_tx_fifo(struct dwc2_hsotg *hsotg, const int num);
|
|
void dwc2_flush_rx_fifo(struct dwc2_hsotg *hsotg);
|
|
|
|
void dwc2_enable_global_interrupts(struct dwc2_hsotg *hcd);
|
|
void dwc2_disable_global_interrupts(struct dwc2_hsotg *hcd);
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void dwc2_hib_restore_common(struct dwc2_hsotg *hsotg, int rem_wakeup,
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int is_host);
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int dwc2_backup_global_registers(struct dwc2_hsotg *hsotg);
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int dwc2_restore_global_registers(struct dwc2_hsotg *hsotg);
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void dwc2_enable_acg(struct dwc2_hsotg *hsotg);
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/* This function should be called on every hardware interrupt. */
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irqreturn_t dwc2_handle_common_intr(int irq, void *dev);
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/* The device ID match table */
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extern const struct of_device_id dwc2_of_match_table[];
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int dwc2_lowlevel_hw_enable(struct dwc2_hsotg *hsotg);
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int dwc2_lowlevel_hw_disable(struct dwc2_hsotg *hsotg);
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/* Common polling functions */
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int dwc2_hsotg_wait_bit_set(struct dwc2_hsotg *hs_otg, u32 reg, u32 bit,
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u32 timeout);
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int dwc2_hsotg_wait_bit_clear(struct dwc2_hsotg *hs_otg, u32 reg, u32 bit,
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u32 timeout);
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/* Parameters */
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int dwc2_get_hwparams(struct dwc2_hsotg *hsotg);
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int dwc2_init_params(struct dwc2_hsotg *hsotg);
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/*
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* The following functions check the controller's OTG operation mode
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* capability (GHWCFG2.OTG_MODE).
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*
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* These functions can be used before the internal hsotg->hw_params
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* are read in and cached so they always read directly from the
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* GHWCFG2 register.
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*/
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unsigned int dwc2_op_mode(struct dwc2_hsotg *hsotg);
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bool dwc2_hw_is_otg(struct dwc2_hsotg *hsotg);
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bool dwc2_hw_is_host(struct dwc2_hsotg *hsotg);
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bool dwc2_hw_is_device(struct dwc2_hsotg *hsotg);
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/*
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* Returns the mode of operation, host or device
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*/
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static inline int dwc2_is_host_mode(struct dwc2_hsotg *hsotg)
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{
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return (dwc2_readl(hsotg, GINTSTS) & GINTSTS_CURMODE_HOST) != 0;
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}
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static inline int dwc2_is_device_mode(struct dwc2_hsotg *hsotg)
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{
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return (dwc2_readl(hsotg, GINTSTS) & GINTSTS_CURMODE_HOST) == 0;
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}
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/*
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* Dump core registers and SPRAM
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|
*/
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void dwc2_dump_dev_registers(struct dwc2_hsotg *hsotg);
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void dwc2_dump_host_registers(struct dwc2_hsotg *hsotg);
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void dwc2_dump_global_registers(struct dwc2_hsotg *hsotg);
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|
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/* Gadget defines */
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#if IS_ENABLED(CONFIG_USB_DWC2_PERIPHERAL) || \
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IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE)
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int dwc2_hsotg_remove(struct dwc2_hsotg *hsotg);
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int dwc2_hsotg_suspend(struct dwc2_hsotg *dwc2);
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int dwc2_hsotg_resume(struct dwc2_hsotg *dwc2);
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int dwc2_gadget_init(struct dwc2_hsotg *hsotg);
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void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *dwc2,
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bool reset);
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void dwc2_hsotg_core_connect(struct dwc2_hsotg *hsotg);
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void dwc2_hsotg_disconnect(struct dwc2_hsotg *dwc2);
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int dwc2_hsotg_set_test_mode(struct dwc2_hsotg *hsotg, int testmode);
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#define dwc2_is_device_connected(hsotg) (hsotg->connected)
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int dwc2_backup_device_registers(struct dwc2_hsotg *hsotg);
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int dwc2_restore_device_registers(struct dwc2_hsotg *hsotg, int remote_wakeup);
|
|
int dwc2_gadget_enter_hibernation(struct dwc2_hsotg *hsotg);
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|
int dwc2_gadget_exit_hibernation(struct dwc2_hsotg *hsotg,
|
|
int rem_wakeup, int reset);
|
|
int dwc2_hsotg_tx_fifo_count(struct dwc2_hsotg *hsotg);
|
|
int dwc2_hsotg_tx_fifo_total_depth(struct dwc2_hsotg *hsotg);
|
|
int dwc2_hsotg_tx_fifo_average_depth(struct dwc2_hsotg *hsotg);
|
|
void dwc2_gadget_init_lpm(struct dwc2_hsotg *hsotg);
|
|
void dwc2_gadget_program_ref_clk(struct dwc2_hsotg *hsotg);
|
|
#else
|
|
static inline int dwc2_hsotg_remove(struct dwc2_hsotg *dwc2)
|
|
{ return 0; }
|
|
static inline int dwc2_hsotg_suspend(struct dwc2_hsotg *dwc2)
|
|
{ return 0; }
|
|
static inline int dwc2_hsotg_resume(struct dwc2_hsotg *dwc2)
|
|
{ return 0; }
|
|
static inline int dwc2_gadget_init(struct dwc2_hsotg *hsotg)
|
|
{ return 0; }
|
|
static inline void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *dwc2,
|
|
bool reset) {}
|
|
static inline void dwc2_hsotg_core_connect(struct dwc2_hsotg *hsotg) {}
|
|
static inline void dwc2_hsotg_disconnect(struct dwc2_hsotg *dwc2) {}
|
|
static inline int dwc2_hsotg_set_test_mode(struct dwc2_hsotg *hsotg,
|
|
int testmode)
|
|
{ return 0; }
|
|
#define dwc2_is_device_connected(hsotg) (0)
|
|
static inline int dwc2_backup_device_registers(struct dwc2_hsotg *hsotg)
|
|
{ return 0; }
|
|
static inline int dwc2_restore_device_registers(struct dwc2_hsotg *hsotg,
|
|
int remote_wakeup)
|
|
{ return 0; }
|
|
static inline int dwc2_gadget_enter_hibernation(struct dwc2_hsotg *hsotg)
|
|
{ return 0; }
|
|
static inline int dwc2_gadget_exit_hibernation(struct dwc2_hsotg *hsotg,
|
|
int rem_wakeup, int reset)
|
|
{ return 0; }
|
|
static inline int dwc2_hsotg_tx_fifo_count(struct dwc2_hsotg *hsotg)
|
|
{ return 0; }
|
|
static inline int dwc2_hsotg_tx_fifo_total_depth(struct dwc2_hsotg *hsotg)
|
|
{ return 0; }
|
|
static inline int dwc2_hsotg_tx_fifo_average_depth(struct dwc2_hsotg *hsotg)
|
|
{ return 0; }
|
|
static inline void dwc2_gadget_init_lpm(struct dwc2_hsotg *hsotg) {}
|
|
static inline void dwc2_gadget_program_ref_clk(struct dwc2_hsotg *hsotg) {}
|
|
#endif
|
|
|
|
#if IS_ENABLED(CONFIG_USB_DWC2_HOST) || IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE)
|
|
int dwc2_hcd_get_frame_number(struct dwc2_hsotg *hsotg);
|
|
int dwc2_hcd_get_future_frame_number(struct dwc2_hsotg *hsotg, int us);
|
|
void dwc2_hcd_connect(struct dwc2_hsotg *hsotg);
|
|
void dwc2_hcd_disconnect(struct dwc2_hsotg *hsotg, bool force);
|
|
void dwc2_hcd_start(struct dwc2_hsotg *hsotg);
|
|
int dwc2_core_init(struct dwc2_hsotg *hsotg, bool initial_setup);
|
|
int dwc2_backup_host_registers(struct dwc2_hsotg *hsotg);
|
|
int dwc2_restore_host_registers(struct dwc2_hsotg *hsotg);
|
|
int dwc2_host_enter_hibernation(struct dwc2_hsotg *hsotg);
|
|
int dwc2_host_exit_hibernation(struct dwc2_hsotg *hsotg,
|
|
int rem_wakeup, int reset);
|
|
static inline void dwc2_host_schedule_phy_reset(struct dwc2_hsotg *hsotg)
|
|
{ schedule_work(&hsotg->phy_reset_work); }
|
|
#else
|
|
static inline int dwc2_hcd_get_frame_number(struct dwc2_hsotg *hsotg)
|
|
{ return 0; }
|
|
static inline int dwc2_hcd_get_future_frame_number(struct dwc2_hsotg *hsotg,
|
|
int us)
|
|
{ return 0; }
|
|
static inline void dwc2_hcd_connect(struct dwc2_hsotg *hsotg) {}
|
|
static inline void dwc2_hcd_disconnect(struct dwc2_hsotg *hsotg, bool force) {}
|
|
static inline void dwc2_hcd_start(struct dwc2_hsotg *hsotg) {}
|
|
static inline void dwc2_hcd_remove(struct dwc2_hsotg *hsotg) {}
|
|
static inline int dwc2_core_init(struct dwc2_hsotg *hsotg, bool initial_setup)
|
|
{ return 0; }
|
|
static inline int dwc2_hcd_init(struct dwc2_hsotg *hsotg)
|
|
{ return 0; }
|
|
static inline int dwc2_backup_host_registers(struct dwc2_hsotg *hsotg)
|
|
{ return 0; }
|
|
static inline int dwc2_restore_host_registers(struct dwc2_hsotg *hsotg)
|
|
{ return 0; }
|
|
static inline int dwc2_host_enter_hibernation(struct dwc2_hsotg *hsotg)
|
|
{ return 0; }
|
|
static inline int dwc2_host_exit_hibernation(struct dwc2_hsotg *hsotg,
|
|
int rem_wakeup, int reset)
|
|
{ return 0; }
|
|
static inline void dwc2_host_schedule_phy_reset(struct dwc2_hsotg *hsotg) {}
|
|
|
|
#endif
|
|
|
|
#endif /* __DWC2_CORE_H__ */
|