![Felipe Balbi](/assets/img/avatar_default.png)
ep->max_streams is a mere hint to the gadget driver that 'ep' supports stream handling. Using that as a decision variable for enabling streams was my worst brain-fart to date. Instead, we should check from the Superspeed Endpoint Companion Descriptor if the endpoint has requested streams. For that we need a little re-factoring but it is now correct. Debugged-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Felipe Balbi <balbi@ti.com>
821 lines
23 KiB
C
821 lines
23 KiB
C
/**
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* core.h - DesignWare USB3 DRD Core 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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* 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") version 2, as published by the Free
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* Software Foundation.
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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 __DRIVERS_USB_DWC3_CORE_H
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#define __DRIVERS_USB_DWC3_CORE_H
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#include <linux/device.h>
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#include <linux/spinlock.h>
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#include <linux/ioport.h>
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#include <linux/list.h>
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#include <linux/dma-mapping.h>
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#include <linux/mm.h>
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#include <linux/debugfs.h>
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#include <linux/usb/ch9.h>
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#include <linux/usb/gadget.h>
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/* Global constants */
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#define DWC3_ENDPOINTS_NUM 32
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#define DWC3_EVENT_BUFFERS_SIZE PAGE_SIZE
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#define DWC3_EVENT_TYPE_MASK 0xfe
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#define DWC3_EVENT_TYPE_DEV 0
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#define DWC3_EVENT_TYPE_CARKIT 3
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#define DWC3_EVENT_TYPE_I2C 4
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#define DWC3_DEVICE_EVENT_DISCONNECT 0
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#define DWC3_DEVICE_EVENT_RESET 1
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#define DWC3_DEVICE_EVENT_CONNECT_DONE 2
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#define DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE 3
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#define DWC3_DEVICE_EVENT_WAKEUP 4
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#define DWC3_DEVICE_EVENT_EOPF 6
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#define DWC3_DEVICE_EVENT_SOF 7
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#define DWC3_DEVICE_EVENT_ERRATIC_ERROR 9
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#define DWC3_DEVICE_EVENT_CMD_CMPL 10
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#define DWC3_DEVICE_EVENT_OVERFLOW 11
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#define DWC3_GEVNTCOUNT_MASK 0xfffc
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#define DWC3_GSNPSID_MASK 0xffff0000
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#define DWC3_GSNPSREV_MASK 0xffff
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/* Global Registers */
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#define DWC3_GSBUSCFG0 0xc100
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#define DWC3_GSBUSCFG1 0xc104
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#define DWC3_GTXTHRCFG 0xc108
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#define DWC3_GRXTHRCFG 0xc10c
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#define DWC3_GCTL 0xc110
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#define DWC3_GEVTEN 0xc114
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#define DWC3_GSTS 0xc118
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#define DWC3_GSNPSID 0xc120
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#define DWC3_GGPIO 0xc124
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#define DWC3_GUID 0xc128
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#define DWC3_GUCTL 0xc12c
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#define DWC3_GBUSERRADDR0 0xc130
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#define DWC3_GBUSERRADDR1 0xc134
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#define DWC3_GPRTBIMAP0 0xc138
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#define DWC3_GPRTBIMAP1 0xc13c
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#define DWC3_GHWPARAMS0 0xc140
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#define DWC3_GHWPARAMS1 0xc144
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#define DWC3_GHWPARAMS2 0xc148
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#define DWC3_GHWPARAMS3 0xc14c
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#define DWC3_GHWPARAMS4 0xc150
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#define DWC3_GHWPARAMS5 0xc154
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#define DWC3_GHWPARAMS6 0xc158
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#define DWC3_GHWPARAMS7 0xc15c
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#define DWC3_GDBGFIFOSPACE 0xc160
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#define DWC3_GDBGLTSSM 0xc164
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#define DWC3_GPRTBIMAP_HS0 0xc180
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#define DWC3_GPRTBIMAP_HS1 0xc184
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#define DWC3_GPRTBIMAP_FS0 0xc188
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#define DWC3_GPRTBIMAP_FS1 0xc18c
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#define DWC3_GUSB2PHYCFG(n) (0xc200 + (n * 0x04))
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#define DWC3_GUSB2I2CCTL(n) (0xc240 + (n * 0x04))
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#define DWC3_GUSB2PHYACC(n) (0xc280 + (n * 0x04))
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#define DWC3_GUSB3PIPECTL(n) (0xc2c0 + (n * 0x04))
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#define DWC3_GTXFIFOSIZ(n) (0xc300 + (n * 0x04))
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#define DWC3_GRXFIFOSIZ(n) (0xc380 + (n * 0x04))
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#define DWC3_GEVNTADRLO(n) (0xc400 + (n * 0x10))
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#define DWC3_GEVNTADRHI(n) (0xc404 + (n * 0x10))
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#define DWC3_GEVNTSIZ(n) (0xc408 + (n * 0x10))
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#define DWC3_GEVNTCOUNT(n) (0xc40c + (n * 0x10))
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#define DWC3_GHWPARAMS8 0xc600
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/* Device Registers */
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#define DWC3_DCFG 0xc700
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#define DWC3_DCTL 0xc704
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#define DWC3_DEVTEN 0xc708
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#define DWC3_DSTS 0xc70c
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#define DWC3_DGCMDPAR 0xc710
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#define DWC3_DGCMD 0xc714
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#define DWC3_DALEPENA 0xc720
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#define DWC3_DEPCMDPAR2(n) (0xc800 + (n * 0x10))
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#define DWC3_DEPCMDPAR1(n) (0xc804 + (n * 0x10))
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#define DWC3_DEPCMDPAR0(n) (0xc808 + (n * 0x10))
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#define DWC3_DEPCMD(n) (0xc80c + (n * 0x10))
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/* OTG Registers */
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#define DWC3_OCFG 0xcc00
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#define DWC3_OCTL 0xcc04
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#define DWC3_OEVTEN 0xcc08
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#define DWC3_OSTS 0xcc0C
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/* Bit fields */
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/* Global Configuration Register */
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#define DWC3_GCTL_PWRDNSCALE(n) (n << 19)
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#define DWC3_GCTL_U2RSTECN (1 << 16)
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#define DWC3_GCTL_RAMCLKSEL(x) ((x & DWC3_GCTL_CLK_MASK) << 6)
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#define DWC3_GCTL_CLK_BUS (0)
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#define DWC3_GCTL_CLK_PIPE (1)
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#define DWC3_GCTL_CLK_PIPEHALF (2)
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#define DWC3_GCTL_CLK_MASK (3)
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#define DWC3_GCTL_PRTCAP(n) (((n) & (3 << 12)) >> 12)
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#define DWC3_GCTL_PRTCAPDIR(n) (n << 12)
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#define DWC3_GCTL_PRTCAP_HOST 1
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#define DWC3_GCTL_PRTCAP_DEVICE 2
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#define DWC3_GCTL_PRTCAP_OTG 3
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#define DWC3_GCTL_CORESOFTRESET (1 << 11)
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#define DWC3_GCTL_SCALEDOWN(n) (n << 4)
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#define DWC3_GCTL_DISSCRAMBLE (1 << 3)
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#define DWC3_GCTL_DSBLCLKGTNG (1 << 0)
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/* Global USB2 PHY Configuration Register */
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#define DWC3_GUSB2PHYCFG_PHYSOFTRST (1 << 31)
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#define DWC3_GUSB2PHYCFG_SUSPHY (1 << 6)
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/* Global USB3 PIPE Control Register */
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#define DWC3_GUSB3PIPECTL_PHYSOFTRST (1 << 31)
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#define DWC3_GUSB3PIPECTL_SUSPHY (1 << 17)
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/* Global HWPARAMS1 Register */
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#define DWC3_GHWPARAMS1_EN_PWROPT(n) ((n & (3 << 24)) >> 24)
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#define DWC3_GHWPARAMS1_EN_PWROPT_NO 0
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#define DWC3_GHWPARAMS1_EN_PWROPT_CLK 1
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/* Device Configuration Register */
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#define DWC3_DCFG_DEVADDR(addr) ((addr) << 3)
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#define DWC3_DCFG_DEVADDR_MASK DWC3_DCFG_DEVADDR(0x7f)
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#define DWC3_DCFG_SPEED_MASK (7 << 0)
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#define DWC3_DCFG_SUPERSPEED (4 << 0)
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#define DWC3_DCFG_HIGHSPEED (0 << 0)
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#define DWC3_DCFG_FULLSPEED2 (1 << 0)
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#define DWC3_DCFG_LOWSPEED (2 << 0)
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#define DWC3_DCFG_FULLSPEED1 (3 << 0)
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/* Device Control Register */
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#define DWC3_DCTL_RUN_STOP (1 << 31)
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#define DWC3_DCTL_CSFTRST (1 << 30)
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#define DWC3_DCTL_LSFTRST (1 << 29)
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#define DWC3_DCTL_HIRD_THRES_MASK (0x1f << 24)
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#define DWC3_DCTL_HIRD_THRES(n) (((n) & DWC3_DCTL_HIRD_THRES_MASK) >> 24)
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#define DWC3_DCTL_APPL1RES (1 << 23)
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#define DWC3_DCTL_INITU2ENA (1 << 12)
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#define DWC3_DCTL_ACCEPTU2ENA (1 << 11)
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#define DWC3_DCTL_INITU1ENA (1 << 10)
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#define DWC3_DCTL_ACCEPTU1ENA (1 << 9)
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#define DWC3_DCTL_TSTCTRL_MASK (0xf << 1)
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#define DWC3_DCTL_ULSTCHNGREQ_MASK (0x0f << 5)
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#define DWC3_DCTL_ULSTCHNGREQ(n) (((n) << 5) & DWC3_DCTL_ULSTCHNGREQ_MASK)
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#define DWC3_DCTL_ULSTCHNG_NO_ACTION (DWC3_DCTL_ULSTCHNGREQ(0))
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#define DWC3_DCTL_ULSTCHNG_SS_DISABLED (DWC3_DCTL_ULSTCHNGREQ(4))
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#define DWC3_DCTL_ULSTCHNG_RX_DETECT (DWC3_DCTL_ULSTCHNGREQ(5))
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#define DWC3_DCTL_ULSTCHNG_SS_INACTIVE (DWC3_DCTL_ULSTCHNGREQ(6))
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#define DWC3_DCTL_ULSTCHNG_RECOVERY (DWC3_DCTL_ULSTCHNGREQ(8))
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#define DWC3_DCTL_ULSTCHNG_COMPLIANCE (DWC3_DCTL_ULSTCHNGREQ(10))
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#define DWC3_DCTL_ULSTCHNG_LOOPBACK (DWC3_DCTL_ULSTCHNGREQ(11))
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/* Device Event Enable Register */
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#define DWC3_DEVTEN_VNDRDEVTSTRCVEDEN (1 << 12)
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#define DWC3_DEVTEN_EVNTOVERFLOWEN (1 << 11)
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#define DWC3_DEVTEN_CMDCMPLTEN (1 << 10)
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#define DWC3_DEVTEN_ERRTICERREN (1 << 9)
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#define DWC3_DEVTEN_SOFEN (1 << 7)
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#define DWC3_DEVTEN_EOPFEN (1 << 6)
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#define DWC3_DEVTEN_WKUPEVTEN (1 << 4)
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#define DWC3_DEVTEN_ULSTCNGEN (1 << 3)
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#define DWC3_DEVTEN_CONNECTDONEEN (1 << 2)
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#define DWC3_DEVTEN_USBRSTEN (1 << 1)
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#define DWC3_DEVTEN_DISCONNEVTEN (1 << 0)
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/* Device Status Register */
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#define DWC3_DSTS_PWRUPREQ (1 << 24)
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#define DWC3_DSTS_COREIDLE (1 << 23)
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#define DWC3_DSTS_DEVCTRLHLT (1 << 22)
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#define DWC3_DSTS_USBLNKST_MASK (0x0f << 18)
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#define DWC3_DSTS_USBLNKST(n) (((n) & DWC3_DSTS_USBLNKST_MASK) >> 18)
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#define DWC3_DSTS_RXFIFOEMPTY (1 << 17)
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#define DWC3_DSTS_SOFFN_MASK (0x3ff << 3)
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#define DWC3_DSTS_SOFFN(n) (((n) & DWC3_DSTS_SOFFN_MASK) >> 3)
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#define DWC3_DSTS_CONNECTSPD (7 << 0)
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#define DWC3_DSTS_SUPERSPEED (4 << 0)
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#define DWC3_DSTS_HIGHSPEED (0 << 0)
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#define DWC3_DSTS_FULLSPEED2 (1 << 0)
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#define DWC3_DSTS_LOWSPEED (2 << 0)
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#define DWC3_DSTS_FULLSPEED1 (3 << 0)
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/* Device Generic Command Register */
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#define DWC3_DGCMD_SET_LMP 0x01
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#define DWC3_DGCMD_SET_PERIODIC_PAR 0x02
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#define DWC3_DGCMD_XMIT_FUNCTION 0x03
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#define DWC3_DGCMD_SELECTED_FIFO_FLUSH 0x09
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#define DWC3_DGCMD_ALL_FIFO_FLUSH 0x0a
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#define DWC3_DGCMD_SET_ENDPOINT_NRDY 0x0c
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#define DWC3_DGCMD_RUN_SOC_BUS_LOOPBACK 0x10
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/* Device Endpoint Command Register */
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#define DWC3_DEPCMD_PARAM_SHIFT 16
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#define DWC3_DEPCMD_PARAM(x) (x << DWC3_DEPCMD_PARAM_SHIFT)
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#define DWC3_DEPCMD_GET_RSC_IDX(x) ((x >> DWC3_DEPCMD_PARAM_SHIFT) & 0x7f)
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#define DWC3_DEPCMD_STATUS_MASK (0x0f << 12)
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#define DWC3_DEPCMD_STATUS(x) ((x & DWC3_DEPCMD_STATUS_MASK) >> 12)
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#define DWC3_DEPCMD_HIPRI_FORCERM (1 << 11)
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#define DWC3_DEPCMD_CMDACT (1 << 10)
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#define DWC3_DEPCMD_CMDIOC (1 << 8)
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#define DWC3_DEPCMD_DEPSTARTCFG (0x09 << 0)
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#define DWC3_DEPCMD_ENDTRANSFER (0x08 << 0)
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#define DWC3_DEPCMD_UPDATETRANSFER (0x07 << 0)
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#define DWC3_DEPCMD_STARTTRANSFER (0x06 << 0)
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#define DWC3_DEPCMD_CLEARSTALL (0x05 << 0)
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#define DWC3_DEPCMD_SETSTALL (0x04 << 0)
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#define DWC3_DEPCMD_GETSEQNUMBER (0x03 << 0)
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#define DWC3_DEPCMD_SETTRANSFRESOURCE (0x02 << 0)
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#define DWC3_DEPCMD_SETEPCONFIG (0x01 << 0)
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/* The EP number goes 0..31 so ep0 is always out and ep1 is always in */
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#define DWC3_DALEPENA_EP(n) (1 << n)
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#define DWC3_DEPCMD_TYPE_CONTROL 0
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#define DWC3_DEPCMD_TYPE_ISOC 1
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#define DWC3_DEPCMD_TYPE_BULK 2
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#define DWC3_DEPCMD_TYPE_INTR 3
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/* Structures */
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struct dwc3_trb_hw;
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/**
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* struct dwc3_event_buffer - Software event buffer representation
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* @list: a list of event buffers
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* @buf: _THE_ buffer
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* @length: size of this buffer
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* @dma: dma_addr_t
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* @dwc: pointer to DWC controller
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*/
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struct dwc3_event_buffer {
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void *buf;
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unsigned length;
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unsigned int lpos;
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dma_addr_t dma;
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struct dwc3 *dwc;
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};
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#define DWC3_EP_FLAG_STALLED (1 << 0)
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#define DWC3_EP_FLAG_WEDGED (1 << 1)
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#define DWC3_EP_DIRECTION_TX true
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#define DWC3_EP_DIRECTION_RX false
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#define DWC3_TRB_NUM 32
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#define DWC3_TRB_MASK (DWC3_TRB_NUM - 1)
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/**
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* struct dwc3_ep - device side endpoint representation
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* @endpoint: usb endpoint
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* @request_list: list of requests for this endpoint
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* @req_queued: list of requests on this ep which have TRBs setup
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* @trb_pool: array of transaction buffers
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* @trb_pool_dma: dma address of @trb_pool
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* @free_slot: next slot which is going to be used
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* @busy_slot: first slot which is owned by HW
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* @desc: usb_endpoint_descriptor pointer
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* @dwc: pointer to DWC controller
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* @flags: endpoint flags (wedged, stalled, ...)
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* @current_trb: index of current used trb
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* @number: endpoint number (1 - 15)
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* @type: set to bmAttributes & USB_ENDPOINT_XFERTYPE_MASK
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* @res_trans_idx: Resource transfer index
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* @interval: the intervall on which the ISOC transfer is started
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* @name: a human readable name e.g. ep1out-bulk
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* @direction: true for TX, false for RX
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* @stream_capable: true when streams are enabled
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*/
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struct dwc3_ep {
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struct usb_ep endpoint;
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struct list_head request_list;
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struct list_head req_queued;
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struct dwc3_trb_hw *trb_pool;
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dma_addr_t trb_pool_dma;
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u32 free_slot;
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u32 busy_slot;
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const struct usb_endpoint_descriptor *desc;
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const struct usb_ss_ep_comp_descriptor *comp_desc;
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struct dwc3 *dwc;
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unsigned flags;
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#define DWC3_EP_ENABLED (1 << 0)
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#define DWC3_EP_STALL (1 << 1)
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#define DWC3_EP_WEDGE (1 << 2)
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#define DWC3_EP_BUSY (1 << 4)
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#define DWC3_EP_PENDING_REQUEST (1 << 5)
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/* This last one is specific to EP0 */
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#define DWC3_EP0_DIR_IN (1 << 31)
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unsigned current_trb;
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u8 number;
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u8 type;
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u8 res_trans_idx;
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u32 interval;
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char name[20];
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unsigned direction:1;
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unsigned stream_capable:1;
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};
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enum dwc3_phy {
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DWC3_PHY_UNKNOWN = 0,
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DWC3_PHY_USB3,
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DWC3_PHY_USB2,
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};
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enum dwc3_ep0_next {
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DWC3_EP0_UNKNOWN = 0,
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DWC3_EP0_COMPLETE,
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DWC3_EP0_NRDY_SETUP,
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DWC3_EP0_NRDY_DATA,
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DWC3_EP0_NRDY_STATUS,
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};
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enum dwc3_ep0_state {
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EP0_UNCONNECTED = 0,
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EP0_SETUP_PHASE,
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EP0_DATA_PHASE,
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|
EP0_STATUS_PHASE,
|
|
};
|
|
|
|
enum dwc3_link_state {
|
|
/* In SuperSpeed */
|
|
DWC3_LINK_STATE_U0 = 0x00, /* in HS, means ON */
|
|
DWC3_LINK_STATE_U1 = 0x01,
|
|
DWC3_LINK_STATE_U2 = 0x02, /* in HS, means SLEEP */
|
|
DWC3_LINK_STATE_U3 = 0x03, /* in HS, means SUSPEND */
|
|
DWC3_LINK_STATE_SS_DIS = 0x04,
|
|
DWC3_LINK_STATE_RX_DET = 0x05, /* in HS, means Early Suspend */
|
|
DWC3_LINK_STATE_SS_INACT = 0x06,
|
|
DWC3_LINK_STATE_POLL = 0x07,
|
|
DWC3_LINK_STATE_RECOV = 0x08,
|
|
DWC3_LINK_STATE_HRESET = 0x09,
|
|
DWC3_LINK_STATE_CMPLY = 0x0a,
|
|
DWC3_LINK_STATE_LPBK = 0x0b,
|
|
DWC3_LINK_STATE_MASK = 0x0f,
|
|
};
|
|
|
|
enum dwc3_device_state {
|
|
DWC3_DEFAULT_STATE,
|
|
DWC3_ADDRESS_STATE,
|
|
DWC3_CONFIGURED_STATE,
|
|
};
|
|
|
|
/**
|
|
* struct dwc3_trb - transfer request block
|
|
* @bpl: lower 32bit of the buffer
|
|
* @bph: higher 32bit of the buffer
|
|
* @length: buffer size (up to 16mb - 1)
|
|
* @pcm1: packet count m1
|
|
* @trbsts: trb status
|
|
* 0 = ok
|
|
* 1 = missed isoc
|
|
* 2 = setup pending
|
|
* @hwo: hardware owner of descriptor
|
|
* @lst: last trb
|
|
* @chn: chain buffers
|
|
* @csp: continue on short packets (only supported on isoc eps)
|
|
* @trbctl: trb control
|
|
* 1 = normal
|
|
* 2 = control-setup
|
|
* 3 = control-status-2
|
|
* 4 = control-status-3
|
|
* 5 = control-data (first trb of data stage)
|
|
* 6 = isochronous-first (first trb of service interval)
|
|
* 7 = isochronous
|
|
* 8 = link trb
|
|
* others = reserved
|
|
* @isp_imi: interrupt on short packet / interrupt on missed isoc
|
|
* @ioc: interrupt on complete
|
|
* @sid_sofn: Stream ID / SOF Number
|
|
*/
|
|
struct dwc3_trb {
|
|
u64 bplh;
|
|
|
|
union {
|
|
struct {
|
|
u32 length:24;
|
|
u32 pcm1:2;
|
|
u32 reserved27_26:2;
|
|
u32 trbsts:4;
|
|
#define DWC3_TRB_STS_OKAY 0
|
|
#define DWC3_TRB_STS_MISSED_ISOC 1
|
|
#define DWC3_TRB_STS_SETUP_PENDING 2
|
|
};
|
|
u32 len_pcm;
|
|
};
|
|
|
|
union {
|
|
struct {
|
|
u32 hwo:1;
|
|
u32 lst:1;
|
|
u32 chn:1;
|
|
u32 csp:1;
|
|
u32 trbctl:6;
|
|
u32 isp_imi:1;
|
|
u32 ioc:1;
|
|
u32 reserved13_12:2;
|
|
u32 sid_sofn:16;
|
|
u32 reserved31_30:2;
|
|
};
|
|
u32 control;
|
|
};
|
|
} __packed;
|
|
|
|
/**
|
|
* struct dwc3_trb_hw - transfer request block (hw format)
|
|
* @bpl: DW0-3
|
|
* @bph: DW4-7
|
|
* @size: DW8-B
|
|
* @trl: DWC-F
|
|
*/
|
|
struct dwc3_trb_hw {
|
|
__le32 bpl;
|
|
__le32 bph;
|
|
__le32 size;
|
|
__le32 ctrl;
|
|
} __packed;
|
|
|
|
static inline void dwc3_trb_to_hw(struct dwc3_trb *nat, struct dwc3_trb_hw *hw)
|
|
{
|
|
hw->bpl = cpu_to_le32(lower_32_bits(nat->bplh));
|
|
hw->bph = cpu_to_le32(upper_32_bits(nat->bplh));
|
|
hw->size = cpu_to_le32p(&nat->len_pcm);
|
|
/* HWO is written last */
|
|
hw->ctrl = cpu_to_le32p(&nat->control);
|
|
}
|
|
|
|
static inline void dwc3_trb_to_nat(struct dwc3_trb_hw *hw, struct dwc3_trb *nat)
|
|
{
|
|
u64 bplh;
|
|
|
|
bplh = le32_to_cpup(&hw->bpl);
|
|
bplh |= (u64) le32_to_cpup(&hw->bph) << 32;
|
|
nat->bplh = bplh;
|
|
|
|
nat->len_pcm = le32_to_cpup(&hw->size);
|
|
nat->control = le32_to_cpup(&hw->ctrl);
|
|
}
|
|
|
|
/**
|
|
* dwc3_hwparams - copy of HWPARAMS registers
|
|
* @hwparams0 - GHWPARAMS0
|
|
* @hwparams1 - GHWPARAMS1
|
|
* @hwparams2 - GHWPARAMS2
|
|
* @hwparams3 - GHWPARAMS3
|
|
* @hwparams4 - GHWPARAMS4
|
|
* @hwparams5 - GHWPARAMS5
|
|
* @hwparams6 - GHWPARAMS6
|
|
* @hwparams7 - GHWPARAMS7
|
|
* @hwparams8 - GHWPARAMS8
|
|
*/
|
|
struct dwc3_hwparams {
|
|
u32 hwparams0;
|
|
u32 hwparams1;
|
|
u32 hwparams2;
|
|
u32 hwparams3;
|
|
u32 hwparams4;
|
|
u32 hwparams5;
|
|
u32 hwparams6;
|
|
u32 hwparams7;
|
|
u32 hwparams8;
|
|
};
|
|
|
|
/* HWPARAMS0 */
|
|
#define DWC3_MODE(n) ((n) & 0x7)
|
|
|
|
#define DWC3_MODE_DEVICE 0
|
|
#define DWC3_MODE_HOST 1
|
|
#define DWC3_MODE_DRD 2
|
|
#define DWC3_MODE_HUB 3
|
|
|
|
/* HWPARAMS1 */
|
|
#define DWC3_NUM_INT(n) (((n) & (0x3f << 15)) >> 15)
|
|
|
|
struct dwc3_request {
|
|
struct usb_request request;
|
|
struct list_head list;
|
|
struct dwc3_ep *dep;
|
|
|
|
u8 epnum;
|
|
struct dwc3_trb_hw *trb;
|
|
dma_addr_t trb_dma;
|
|
|
|
unsigned direction:1;
|
|
unsigned mapped:1;
|
|
unsigned queued:1;
|
|
};
|
|
|
|
/**
|
|
* struct dwc3 - representation of our controller
|
|
* @ctrl_req: usb control request which is used for ep0
|
|
* @ep0_trb: trb which is used for the ctrl_req
|
|
* @ep0_bounce: bounce buffer for ep0
|
|
* @setup_buf: used while precessing STD USB requests
|
|
* @ctrl_req_addr: dma address of ctrl_req
|
|
* @ep0_trb: dma address of ep0_trb
|
|
* @ep0_usb_req: dummy req used while handling STD USB requests
|
|
* @setup_buf_addr: dma address of setup_buf
|
|
* @ep0_bounce_addr: dma address of ep0_bounce
|
|
* @lock: for synchronizing
|
|
* @dev: pointer to our struct device
|
|
* @xhci: pointer to our xHCI child
|
|
* @event_buffer_list: a list of event buffers
|
|
* @gadget: device side representation of the peripheral controller
|
|
* @gadget_driver: pointer to the gadget driver
|
|
* @regs: base address for our registers
|
|
* @regs_size: address space size
|
|
* @irq: IRQ number
|
|
* @num_event_buffers: calculated number of event buffers
|
|
* @u1u2: only used on revisions <1.83a for workaround
|
|
* @maximum_speed: maximum speed requested (mainly for testing purposes)
|
|
* @revision: revision register contents
|
|
* @mode: mode of operation
|
|
* @is_selfpowered: true when we are selfpowered
|
|
* @three_stage_setup: set if we perform a three phase setup
|
|
* @ep0_bounced: true when we used bounce buffer
|
|
* @ep0_expect_in: true when we expect a DATA IN transfer
|
|
* @start_config_issued: true when StartConfig command has been issued
|
|
* @setup_packet_pending: true when there's a Setup Packet in FIFO. Workaround
|
|
* @ep0_next_event: hold the next expected event
|
|
* @ep0state: state of endpoint zero
|
|
* @link_state: link state
|
|
* @speed: device speed (super, high, full, low)
|
|
* @mem: points to start of memory which is used for this struct.
|
|
* @hwparams: copy of hwparams registers
|
|
* @root: debugfs root folder pointer
|
|
*/
|
|
struct dwc3 {
|
|
struct usb_ctrlrequest *ctrl_req;
|
|
struct dwc3_trb_hw *ep0_trb;
|
|
void *ep0_bounce;
|
|
u8 *setup_buf;
|
|
dma_addr_t ctrl_req_addr;
|
|
dma_addr_t ep0_trb_addr;
|
|
dma_addr_t setup_buf_addr;
|
|
dma_addr_t ep0_bounce_addr;
|
|
struct dwc3_request ep0_usb_req;
|
|
/* device lock */
|
|
spinlock_t lock;
|
|
struct device *dev;
|
|
|
|
struct platform_device *xhci;
|
|
struct resource *res;
|
|
|
|
struct dwc3_event_buffer **ev_buffs;
|
|
struct dwc3_ep *eps[DWC3_ENDPOINTS_NUM];
|
|
|
|
struct usb_gadget gadget;
|
|
struct usb_gadget_driver *gadget_driver;
|
|
|
|
void __iomem *regs;
|
|
size_t regs_size;
|
|
|
|
int irq;
|
|
|
|
u32 num_event_buffers;
|
|
u32 u1u2;
|
|
u32 maximum_speed;
|
|
u32 revision;
|
|
u32 mode;
|
|
|
|
#define DWC3_REVISION_173A 0x5533173a
|
|
#define DWC3_REVISION_175A 0x5533175a
|
|
#define DWC3_REVISION_180A 0x5533180a
|
|
#define DWC3_REVISION_183A 0x5533183a
|
|
#define DWC3_REVISION_185A 0x5533185a
|
|
#define DWC3_REVISION_188A 0x5533188a
|
|
#define DWC3_REVISION_190A 0x5533190a
|
|
|
|
unsigned is_selfpowered:1;
|
|
unsigned three_stage_setup:1;
|
|
unsigned ep0_bounced:1;
|
|
unsigned ep0_expect_in:1;
|
|
unsigned start_config_issued:1;
|
|
unsigned setup_packet_pending:1;
|
|
unsigned delayed_status:1;
|
|
|
|
enum dwc3_ep0_next ep0_next_event;
|
|
enum dwc3_ep0_state ep0state;
|
|
enum dwc3_link_state link_state;
|
|
enum dwc3_device_state dev_state;
|
|
|
|
u8 speed;
|
|
void *mem;
|
|
|
|
struct dwc3_hwparams hwparams;
|
|
struct dentry *root;
|
|
};
|
|
|
|
/* -------------------------------------------------------------------------- */
|
|
|
|
#define DWC3_TRBSTS_OK 0
|
|
#define DWC3_TRBSTS_MISSED_ISOC 1
|
|
#define DWC3_TRBSTS_SETUP_PENDING 2
|
|
|
|
#define DWC3_TRBCTL_NORMAL 1
|
|
#define DWC3_TRBCTL_CONTROL_SETUP 2
|
|
#define DWC3_TRBCTL_CONTROL_STATUS2 3
|
|
#define DWC3_TRBCTL_CONTROL_STATUS3 4
|
|
#define DWC3_TRBCTL_CONTROL_DATA 5
|
|
#define DWC3_TRBCTL_ISOCHRONOUS_FIRST 6
|
|
#define DWC3_TRBCTL_ISOCHRONOUS 7
|
|
#define DWC3_TRBCTL_LINK_TRB 8
|
|
|
|
/* -------------------------------------------------------------------------- */
|
|
|
|
struct dwc3_event_type {
|
|
u32 is_devspec:1;
|
|
u32 type:6;
|
|
u32 reserved8_31:25;
|
|
} __packed;
|
|
|
|
#define DWC3_DEPEVT_XFERCOMPLETE 0x01
|
|
#define DWC3_DEPEVT_XFERINPROGRESS 0x02
|
|
#define DWC3_DEPEVT_XFERNOTREADY 0x03
|
|
#define DWC3_DEPEVT_RXTXFIFOEVT 0x04
|
|
#define DWC3_DEPEVT_STREAMEVT 0x06
|
|
#define DWC3_DEPEVT_EPCMDCMPLT 0x07
|
|
|
|
/**
|
|
* struct dwc3_event_depvt - Device Endpoint Events
|
|
* @one_bit: indicates this is an endpoint event (not used)
|
|
* @endpoint_number: number of the endpoint
|
|
* @endpoint_event: The event we have:
|
|
* 0x00 - Reserved
|
|
* 0x01 - XferComplete
|
|
* 0x02 - XferInProgress
|
|
* 0x03 - XferNotReady
|
|
* 0x04 - RxTxFifoEvt (IN->Underrun, OUT->Overrun)
|
|
* 0x05 - Reserved
|
|
* 0x06 - StreamEvt
|
|
* 0x07 - EPCmdCmplt
|
|
* @reserved11_10: Reserved, don't use.
|
|
* @status: Indicates the status of the event. Refer to databook for
|
|
* more information.
|
|
* @parameters: Parameters of the current event. Refer to databook for
|
|
* more information.
|
|
*/
|
|
struct dwc3_event_depevt {
|
|
u32 one_bit:1;
|
|
u32 endpoint_number:5;
|
|
u32 endpoint_event:4;
|
|
u32 reserved11_10:2;
|
|
u32 status:4;
|
|
#define DEPEVT_STATUS_BUSERR (1 << 0)
|
|
#define DEPEVT_STATUS_SHORT (1 << 1)
|
|
#define DEPEVT_STATUS_IOC (1 << 2)
|
|
#define DEPEVT_STATUS_LST (1 << 3)
|
|
|
|
/* Stream event only */
|
|
#define DEPEVT_STREAMEVT_FOUND 1
|
|
#define DEPEVT_STREAMEVT_NOTFOUND 2
|
|
|
|
/* Control-only Status */
|
|
#define DEPEVT_STATUS_CONTROL_SETUP 0
|
|
#define DEPEVT_STATUS_CONTROL_DATA 1
|
|
#define DEPEVT_STATUS_CONTROL_STATUS 2
|
|
|
|
u32 parameters:16;
|
|
} __packed;
|
|
|
|
/**
|
|
* struct dwc3_event_devt - Device Events
|
|
* @one_bit: indicates this is a non-endpoint event (not used)
|
|
* @device_event: indicates it's a device event. Should read as 0x00
|
|
* @type: indicates the type of device event.
|
|
* 0 - DisconnEvt
|
|
* 1 - USBRst
|
|
* 2 - ConnectDone
|
|
* 3 - ULStChng
|
|
* 4 - WkUpEvt
|
|
* 5 - Reserved
|
|
* 6 - EOPF
|
|
* 7 - SOF
|
|
* 8 - Reserved
|
|
* 9 - ErrticErr
|
|
* 10 - CmdCmplt
|
|
* 11 - EvntOverflow
|
|
* 12 - VndrDevTstRcved
|
|
* @reserved15_12: Reserved, not used
|
|
* @event_info: Information about this event
|
|
* @reserved31_24: Reserved, not used
|
|
*/
|
|
struct dwc3_event_devt {
|
|
u32 one_bit:1;
|
|
u32 device_event:7;
|
|
u32 type:4;
|
|
u32 reserved15_12:4;
|
|
u32 event_info:8;
|
|
u32 reserved31_24:8;
|
|
} __packed;
|
|
|
|
/**
|
|
* struct dwc3_event_gevt - Other Core Events
|
|
* @one_bit: indicates this is a non-endpoint event (not used)
|
|
* @device_event: indicates it's (0x03) Carkit or (0x04) I2C event.
|
|
* @phy_port_number: self-explanatory
|
|
* @reserved31_12: Reserved, not used.
|
|
*/
|
|
struct dwc3_event_gevt {
|
|
u32 one_bit:1;
|
|
u32 device_event:7;
|
|
u32 phy_port_number:4;
|
|
u32 reserved31_12:20;
|
|
} __packed;
|
|
|
|
/**
|
|
* union dwc3_event - representation of Event Buffer contents
|
|
* @raw: raw 32-bit event
|
|
* @type: the type of the event
|
|
* @depevt: Device Endpoint Event
|
|
* @devt: Device Event
|
|
* @gevt: Global Event
|
|
*/
|
|
union dwc3_event {
|
|
u32 raw;
|
|
struct dwc3_event_type type;
|
|
struct dwc3_event_depevt depevt;
|
|
struct dwc3_event_devt devt;
|
|
struct dwc3_event_gevt gevt;
|
|
};
|
|
|
|
/*
|
|
* DWC3 Features to be used as Driver Data
|
|
*/
|
|
|
|
#define DWC3_HAS_PERIPHERAL BIT(0)
|
|
#define DWC3_HAS_XHCI BIT(1)
|
|
#define DWC3_HAS_OTG BIT(3)
|
|
|
|
/* prototypes */
|
|
void dwc3_set_mode(struct dwc3 *dwc, u32 mode);
|
|
|
|
int dwc3_host_init(struct dwc3 *dwc);
|
|
void dwc3_host_exit(struct dwc3 *dwc);
|
|
|
|
int dwc3_gadget_init(struct dwc3 *dwc);
|
|
void dwc3_gadget_exit(struct dwc3 *dwc);
|
|
|
|
extern int dwc3_get_device_id(void);
|
|
extern void dwc3_put_device_id(int id);
|
|
|
|
#endif /* __DRIVERS_USB_DWC3_CORE_H */
|