/** * core.h - DesignWare USB3 DRD Core Header * * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com * * Authors: Felipe Balbi , * Sebastian Andrzej Siewior * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef __DRIVERS_USB_DWC3_CORE_H #define __DRIVERS_USB_DWC3_CORE_H #include #include #include #include #include #include #include #include #include /* Global constants */ #define DWC3_EP0_BOUNCE_SIZE 512 #define DWC3_ENDPOINTS_NUM 32 #define DWC3_XHCI_RESOURCES_NUM 2 #define DWC3_EVENT_SIZE 4 /* bytes */ #define DWC3_EVENT_MAX_NUM 64 /* 2 events/endpoint */ #define DWC3_EVENT_BUFFERS_SIZE (DWC3_EVENT_SIZE * DWC3_EVENT_MAX_NUM) #define DWC3_EVENT_TYPE_MASK 0xfe #define DWC3_EVENT_TYPE_DEV 0 #define DWC3_EVENT_TYPE_CARKIT 3 #define DWC3_EVENT_TYPE_I2C 4 #define DWC3_DEVICE_EVENT_DISCONNECT 0 #define DWC3_DEVICE_EVENT_RESET 1 #define DWC3_DEVICE_EVENT_CONNECT_DONE 2 #define DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE 3 #define DWC3_DEVICE_EVENT_WAKEUP 4 #define DWC3_DEVICE_EVENT_HIBER_REQ 5 #define DWC3_DEVICE_EVENT_EOPF 6 #define DWC3_DEVICE_EVENT_SOF 7 #define DWC3_DEVICE_EVENT_ERRATIC_ERROR 9 #define DWC3_DEVICE_EVENT_CMD_CMPL 10 #define DWC3_DEVICE_EVENT_OVERFLOW 11 #define DWC3_GEVNTCOUNT_MASK 0xfffc #define DWC3_GSNPSID_MASK 0xffff0000 #define DWC3_GSNPSREV_MASK 0xffff /* DWC3 registers memory space boundries */ #define DWC3_XHCI_REGS_START 0x0 #define DWC3_XHCI_REGS_END 0x7fff #define DWC3_GLOBALS_REGS_START 0xc100 #define DWC3_GLOBALS_REGS_END 0xc6ff #define DWC3_DEVICE_REGS_START 0xc700 #define DWC3_DEVICE_REGS_END 0xcbff #define DWC3_OTG_REGS_START 0xcc00 #define DWC3_OTG_REGS_END 0xccff /* Global Registers */ #define DWC3_GSBUSCFG0 0xc100 #define DWC3_GSBUSCFG1 0xc104 #define DWC3_GTXTHRCFG 0xc108 #define DWC3_GRXTHRCFG 0xc10c #define DWC3_GCTL 0xc110 #define DWC3_GEVTEN 0xc114 #define DWC3_GSTS 0xc118 #define DWC3_GSNPSID 0xc120 #define DWC3_GGPIO 0xc124 #define DWC3_GUID 0xc128 #define DWC3_GUCTL 0xc12c #define DWC3_GBUSERRADDR0 0xc130 #define DWC3_GBUSERRADDR1 0xc134 #define DWC3_GPRTBIMAP0 0xc138 #define DWC3_GPRTBIMAP1 0xc13c #define DWC3_GHWPARAMS0 0xc140 #define DWC3_GHWPARAMS1 0xc144 #define DWC3_GHWPARAMS2 0xc148 #define DWC3_GHWPARAMS3 0xc14c #define DWC3_GHWPARAMS4 0xc150 #define DWC3_GHWPARAMS5 0xc154 #define DWC3_GHWPARAMS6 0xc158 #define DWC3_GHWPARAMS7 0xc15c #define DWC3_GDBGFIFOSPACE 0xc160 #define DWC3_GDBGLTSSM 0xc164 #define DWC3_GPRTBIMAP_HS0 0xc180 #define DWC3_GPRTBIMAP_HS1 0xc184 #define DWC3_GPRTBIMAP_FS0 0xc188 #define DWC3_GPRTBIMAP_FS1 0xc18c #define DWC3_GUSB2PHYCFG(n) (0xc200 + (n * 0x04)) #define DWC3_GUSB2I2CCTL(n) (0xc240 + (n * 0x04)) #define DWC3_GUSB2PHYACC(n) (0xc280 + (n * 0x04)) #define DWC3_GUSB3PIPECTL(n) (0xc2c0 + (n * 0x04)) #define DWC3_GTXFIFOSIZ(n) (0xc300 + (n * 0x04)) #define DWC3_GRXFIFOSIZ(n) (0xc380 + (n * 0x04)) #define DWC3_GEVNTADRLO(n) (0xc400 + (n * 0x10)) #define DWC3_GEVNTADRHI(n) (0xc404 + (n * 0x10)) #define DWC3_GEVNTSIZ(n) (0xc408 + (n * 0x10)) #define DWC3_GEVNTCOUNT(n) (0xc40c + (n * 0x10)) #define DWC3_GHWPARAMS8 0xc600 /* Device Registers */ #define DWC3_DCFG 0xc700 #define DWC3_DCTL 0xc704 #define DWC3_DEVTEN 0xc708 #define DWC3_DSTS 0xc70c #define DWC3_DGCMDPAR 0xc710 #define DWC3_DGCMD 0xc714 #define DWC3_DALEPENA 0xc720 #define DWC3_DEPCMDPAR2(n) (0xc800 + (n * 0x10)) #define DWC3_DEPCMDPAR1(n) (0xc804 + (n * 0x10)) #define DWC3_DEPCMDPAR0(n) (0xc808 + (n * 0x10)) #define DWC3_DEPCMD(n) (0xc80c + (n * 0x10)) /* OTG Registers */ #define DWC3_OCFG 0xcc00 #define DWC3_OCTL 0xcc04 #define DWC3_OEVTEN 0xcc08 #define DWC3_OSTS 0xcc0C /* Bit fields */ /* Global Configuration Register */ #define DWC3_GCTL_PWRDNSCALE(n) ((n) << 19) #define DWC3_GCTL_U2RSTECN (1 << 16) #define DWC3_GCTL_RAMCLKSEL(x) (((x) & DWC3_GCTL_CLK_MASK) << 6) #define DWC3_GCTL_CLK_BUS (0) #define DWC3_GCTL_CLK_PIPE (1) #define DWC3_GCTL_CLK_PIPEHALF (2) #define DWC3_GCTL_CLK_MASK (3) #define DWC3_GCTL_PRTCAP(n) (((n) & (3 << 12)) >> 12) #define DWC3_GCTL_PRTCAPDIR(n) ((n) << 12) #define DWC3_GCTL_PRTCAP_HOST 1 #define DWC3_GCTL_PRTCAP_DEVICE 2 #define DWC3_GCTL_PRTCAP_OTG 3 #define DWC3_GCTL_CORESOFTRESET (1 << 11) #define DWC3_GCTL_SCALEDOWN(n) ((n) << 4) #define DWC3_GCTL_SCALEDOWN_MASK DWC3_GCTL_SCALEDOWN(3) #define DWC3_GCTL_DISSCRAMBLE (1 << 3) #define DWC3_GCTL_GBLHIBERNATIONEN (1 << 1) #define DWC3_GCTL_DSBLCLKGTNG (1 << 0) /* Global USB2 PHY Configuration Register */ #define DWC3_GUSB2PHYCFG_PHYSOFTRST (1 << 31) #define DWC3_GUSB2PHYCFG_SUSPHY (1 << 6) /* Global USB3 PIPE Control Register */ #define DWC3_GUSB3PIPECTL_PHYSOFTRST (1 << 31) #define DWC3_GUSB3PIPECTL_SUSPHY (1 << 17) /* Global TX Fifo Size Register */ #define DWC3_GTXFIFOSIZ_TXFDEF(n) ((n) & 0xffff) #define DWC3_GTXFIFOSIZ_TXFSTADDR(n) ((n) & 0xffff0000) /* Global HWPARAMS1 Register */ #define DWC3_GHWPARAMS1_EN_PWROPT(n) (((n) & (3 << 24)) >> 24) #define DWC3_GHWPARAMS1_EN_PWROPT_NO 0 #define DWC3_GHWPARAMS1_EN_PWROPT_CLK 1 #define DWC3_GHWPARAMS1_EN_PWROPT_HIB 2 #define DWC3_GHWPARAMS1_PWROPT(n) ((n) << 24) #define DWC3_GHWPARAMS1_PWROPT_MASK DWC3_GHWPARAMS1_PWROPT(3) /* Global HWPARAMS4 Register */ #define DWC3_GHWPARAMS4_HIBER_SCRATCHBUFS(n) (((n) & (0x0f << 13)) >> 13) #define DWC3_MAX_HIBER_SCRATCHBUFS 15 /* Device Configuration Register */ #define DWC3_DCFG_LPM_CAP (1 << 22) #define DWC3_DCFG_DEVADDR(addr) ((addr) << 3) #define DWC3_DCFG_DEVADDR_MASK DWC3_DCFG_DEVADDR(0x7f) #define DWC3_DCFG_SPEED_MASK (7 << 0) #define DWC3_DCFG_SUPERSPEED (4 << 0) #define DWC3_DCFG_HIGHSPEED (0 << 0) #define DWC3_DCFG_FULLSPEED2 (1 << 0) #define DWC3_DCFG_LOWSPEED (2 << 0) #define DWC3_DCFG_FULLSPEED1 (3 << 0) #define DWC3_DCFG_LPM_CAP (1 << 22) /* Device Control Register */ #define DWC3_DCTL_RUN_STOP (1 << 31) #define DWC3_DCTL_CSFTRST (1 << 30) #define DWC3_DCTL_LSFTRST (1 << 29) #define DWC3_DCTL_HIRD_THRES_MASK (0x1f << 24) #define DWC3_DCTL_HIRD_THRES(n) ((n) << 24) #define DWC3_DCTL_APPL1RES (1 << 23) /* These apply for core versions 1.87a and earlier */ #define DWC3_DCTL_TRGTULST_MASK (0x0f << 17) #define DWC3_DCTL_TRGTULST(n) ((n) << 17) #define DWC3_DCTL_TRGTULST_U2 (DWC3_DCTL_TRGTULST(2)) #define DWC3_DCTL_TRGTULST_U3 (DWC3_DCTL_TRGTULST(3)) #define DWC3_DCTL_TRGTULST_SS_DIS (DWC3_DCTL_TRGTULST(4)) #define DWC3_DCTL_TRGTULST_RX_DET (DWC3_DCTL_TRGTULST(5)) #define DWC3_DCTL_TRGTULST_SS_INACT (DWC3_DCTL_TRGTULST(6)) /* These apply for core versions 1.94a and later */ #define DWC3_DCTL_KEEP_CONNECT (1 << 19) #define DWC3_DCTL_L1_HIBER_EN (1 << 18) #define DWC3_DCTL_CRS (1 << 17) #define DWC3_DCTL_CSS (1 << 16) #define DWC3_DCTL_INITU2ENA (1 << 12) #define DWC3_DCTL_ACCEPTU2ENA (1 << 11) #define DWC3_DCTL_INITU1ENA (1 << 10) #define DWC3_DCTL_ACCEPTU1ENA (1 << 9) #define DWC3_DCTL_TSTCTRL_MASK (0xf << 1) #define DWC3_DCTL_ULSTCHNGREQ_MASK (0x0f << 5) #define DWC3_DCTL_ULSTCHNGREQ(n) (((n) << 5) & DWC3_DCTL_ULSTCHNGREQ_MASK) #define DWC3_DCTL_ULSTCHNG_NO_ACTION (DWC3_DCTL_ULSTCHNGREQ(0)) #define DWC3_DCTL_ULSTCHNG_SS_DISABLED (DWC3_DCTL_ULSTCHNGREQ(4)) #define DWC3_DCTL_ULSTCHNG_RX_DETECT (DWC3_DCTL_ULSTCHNGREQ(5)) #define DWC3_DCTL_ULSTCHNG_SS_INACTIVE (DWC3_DCTL_ULSTCHNGREQ(6)) #define DWC3_DCTL_ULSTCHNG_RECOVERY (DWC3_DCTL_ULSTCHNGREQ(8)) #define DWC3_DCTL_ULSTCHNG_COMPLIANCE (DWC3_DCTL_ULSTCHNGREQ(10)) #define DWC3_DCTL_ULSTCHNG_LOOPBACK (DWC3_DCTL_ULSTCHNGREQ(11)) /* Device Event Enable Register */ #define DWC3_DEVTEN_VNDRDEVTSTRCVEDEN (1 << 12) #define DWC3_DEVTEN_EVNTOVERFLOWEN (1 << 11) #define DWC3_DEVTEN_CMDCMPLTEN (1 << 10) #define DWC3_DEVTEN_ERRTICERREN (1 << 9) #define DWC3_DEVTEN_SOFEN (1 << 7) #define DWC3_DEVTEN_EOPFEN (1 << 6) #define DWC3_DEVTEN_HIBERNATIONREQEVTEN (1 << 5) #define DWC3_DEVTEN_WKUPEVTEN (1 << 4) #define DWC3_DEVTEN_ULSTCNGEN (1 << 3) #define DWC3_DEVTEN_CONNECTDONEEN (1 << 2) #define DWC3_DEVTEN_USBRSTEN (1 << 1) #define DWC3_DEVTEN_DISCONNEVTEN (1 << 0) /* Device Status Register */ #define DWC3_DSTS_DCNRD (1 << 29) /* This applies for core versions 1.87a and earlier */ #define DWC3_DSTS_PWRUPREQ (1 << 24) /* These apply for core versions 1.94a and later */ #define DWC3_DSTS_RSS (1 << 25) #define DWC3_DSTS_SSS (1 << 24) #define DWC3_DSTS_COREIDLE (1 << 23) #define DWC3_DSTS_DEVCTRLHLT (1 << 22) #define DWC3_DSTS_USBLNKST_MASK (0x0f << 18) #define DWC3_DSTS_USBLNKST(n) (((n) & DWC3_DSTS_USBLNKST_MASK) >> 18) #define DWC3_DSTS_RXFIFOEMPTY (1 << 17) #define DWC3_DSTS_SOFFN_MASK (0x3fff << 3) #define DWC3_DSTS_SOFFN(n) (((n) & DWC3_DSTS_SOFFN_MASK) >> 3) #define DWC3_DSTS_CONNECTSPD (7 << 0) #define DWC3_DSTS_SUPERSPEED (4 << 0) #define DWC3_DSTS_HIGHSPEED (0 << 0) #define DWC3_DSTS_FULLSPEED2 (1 << 0) #define DWC3_DSTS_LOWSPEED (2 << 0) #define DWC3_DSTS_FULLSPEED1 (3 << 0) /* Device Generic Command Register */ #define DWC3_DGCMD_SET_LMP 0x01 #define DWC3_DGCMD_SET_PERIODIC_PAR 0x02 #define DWC3_DGCMD_XMIT_FUNCTION 0x03 /* These apply for core versions 1.94a and later */ #define DWC3_DGCMD_SET_SCRATCHPAD_ADDR_LO 0x04 #define DWC3_DGCMD_SET_SCRATCHPAD_ADDR_HI 0x05 #define DWC3_DGCMD_SELECTED_FIFO_FLUSH 0x09 #define DWC3_DGCMD_ALL_FIFO_FLUSH 0x0a #define DWC3_DGCMD_SET_ENDPOINT_NRDY 0x0c #define DWC3_DGCMD_RUN_SOC_BUS_LOOPBACK 0x10 #define DWC3_DGCMD_STATUS(n) (((n) >> 15) & 1) #define DWC3_DGCMD_CMDACT (1 << 10) #define DWC3_DGCMD_CMDIOC (1 << 8) /* Device Generic Command Parameter Register */ #define DWC3_DGCMDPAR_FORCE_LINKPM_ACCEPT (1 << 0) #define DWC3_DGCMDPAR_FIFO_NUM(n) ((n) << 0) #define DWC3_DGCMDPAR_RX_FIFO (0 << 5) #define DWC3_DGCMDPAR_TX_FIFO (1 << 5) #define DWC3_DGCMDPAR_LOOPBACK_DIS (0 << 0) #define DWC3_DGCMDPAR_LOOPBACK_ENA (1 << 0) /* Device Endpoint Command Register */ #define DWC3_DEPCMD_PARAM_SHIFT 16 #define DWC3_DEPCMD_PARAM(x) ((x) << DWC3_DEPCMD_PARAM_SHIFT) #define DWC3_DEPCMD_GET_RSC_IDX(x) (((x) >> DWC3_DEPCMD_PARAM_SHIFT) & 0x7f) #define DWC3_DEPCMD_STATUS(x) (((x) >> 15) & 1) #define DWC3_DEPCMD_HIPRI_FORCERM (1 << 11) #define DWC3_DEPCMD_CMDACT (1 << 10) #define DWC3_DEPCMD_CMDIOC (1 << 8) #define DWC3_DEPCMD_DEPSTARTCFG (0x09 << 0) #define DWC3_DEPCMD_ENDTRANSFER (0x08 << 0) #define DWC3_DEPCMD_UPDATETRANSFER (0x07 << 0) #define DWC3_DEPCMD_STARTTRANSFER (0x06 << 0) #define DWC3_DEPCMD_CLEARSTALL (0x05 << 0) #define DWC3_DEPCMD_SETSTALL (0x04 << 0) /* This applies for core versions 1.90a and earlier */ #define DWC3_DEPCMD_GETSEQNUMBER (0x03 << 0) /* This applies for core versions 1.94a and later */ #define DWC3_DEPCMD_GETEPSTATE (0x03 << 0) #define DWC3_DEPCMD_SETTRANSFRESOURCE (0x02 << 0) #define DWC3_DEPCMD_SETEPCONFIG (0x01 << 0) /* The EP number goes 0..31 so ep0 is always out and ep1 is always in */ #define DWC3_DALEPENA_EP(n) (1 << n) #define DWC3_DEPCMD_TYPE_CONTROL 0 #define DWC3_DEPCMD_TYPE_ISOC 1 #define DWC3_DEPCMD_TYPE_BULK 2 #define DWC3_DEPCMD_TYPE_INTR 3 /* Structures */ struct dwc3_trb; /** * struct dwc3_event_buffer - Software event buffer representation * @list: a list of event buffers * @buf: _THE_ buffer * @length: size of this buffer * @dma: dma_addr_t * @dwc: pointer to DWC controller */ struct dwc3_event_buffer { void *buf; unsigned length; unsigned int lpos; dma_addr_t dma; struct dwc3 *dwc; }; #define DWC3_EP_FLAG_STALLED (1 << 0) #define DWC3_EP_FLAG_WEDGED (1 << 1) #define DWC3_EP_DIRECTION_TX true #define DWC3_EP_DIRECTION_RX false #define DWC3_TRB_NUM 32 #define DWC3_TRB_MASK (DWC3_TRB_NUM - 1) /** * struct dwc3_ep - device side endpoint representation * @endpoint: usb endpoint * @request_list: list of requests for this endpoint * @req_queued: list of requests on this ep which have TRBs setup * @trb_pool: array of transaction buffers * @trb_pool_dma: dma address of @trb_pool * @free_slot: next slot which is going to be used * @busy_slot: first slot which is owned by HW * @desc: usb_endpoint_descriptor pointer * @dwc: pointer to DWC controller * @flags: endpoint flags (wedged, stalled, ...) * @current_trb: index of current used trb * @number: endpoint number (1 - 15) * @type: set to bmAttributes & USB_ENDPOINT_XFERTYPE_MASK * @resource_index: Resource transfer index * @interval: the intervall on which the ISOC transfer is started * @name: a human readable name e.g. ep1out-bulk * @direction: true for TX, false for RX * @stream_capable: true when streams are enabled */ struct dwc3_ep { struct usb_ep endpoint; struct list_head request_list; struct list_head req_queued; struct dwc3_trb *trb_pool; dma_addr_t trb_pool_dma; u32 free_slot; u32 busy_slot; const struct usb_ss_ep_comp_descriptor *comp_desc; struct dwc3 *dwc; unsigned flags; #define DWC3_EP_ENABLED (1 << 0) #define DWC3_EP_STALL (1 << 1) #define DWC3_EP_WEDGE (1 << 2) #define DWC3_EP_BUSY (1 << 4) #define DWC3_EP_PENDING_REQUEST (1 << 5) #define DWC3_EP_MISSED_ISOC (1 << 6) /* This last one is specific to EP0 */ #define DWC3_EP0_DIR_IN (1 << 31) unsigned current_trb; u8 number; u8 type; u8 resource_index; u32 interval; char name[20]; unsigned direction:1; unsigned stream_capable:1; }; enum dwc3_phy { DWC3_PHY_UNKNOWN = 0, DWC3_PHY_USB3, DWC3_PHY_USB2, }; enum dwc3_ep0_next { DWC3_EP0_UNKNOWN = 0, DWC3_EP0_COMPLETE, DWC3_EP0_NRDY_DATA, DWC3_EP0_NRDY_STATUS, }; enum dwc3_ep0_state { EP0_UNCONNECTED = 0, EP0_SETUP_PHASE, EP0_DATA_PHASE, 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_RESET = 0x0e, DWC3_LINK_STATE_RESUME = 0x0f, DWC3_LINK_STATE_MASK = 0x0f, }; enum dwc3_device_state { DWC3_DEFAULT_STATE, DWC3_ADDRESS_STATE, DWC3_CONFIGURED_STATE, }; /* TRB Length, PCM and Status */ #define DWC3_TRB_SIZE_MASK (0x00ffffff) #define DWC3_TRB_SIZE_LENGTH(n) ((n) & DWC3_TRB_SIZE_MASK) #define DWC3_TRB_SIZE_PCM1(n) (((n) & 0x03) << 24) #define DWC3_TRB_SIZE_TRBSTS(n) (((n) & (0x0f << 28)) >> 28) #define DWC3_TRBSTS_OK 0 #define DWC3_TRBSTS_MISSED_ISOC 1 #define DWC3_TRBSTS_SETUP_PENDING 2 #define DWC3_TRB_STS_XFER_IN_PROG 4 /* TRB Control */ #define DWC3_TRB_CTRL_HWO (1 << 0) #define DWC3_TRB_CTRL_LST (1 << 1) #define DWC3_TRB_CTRL_CHN (1 << 2) #define DWC3_TRB_CTRL_CSP (1 << 3) #define DWC3_TRB_CTRL_TRBCTL(n) (((n) & 0x3f) << 4) #define DWC3_TRB_CTRL_ISP_IMI (1 << 10) #define DWC3_TRB_CTRL_IOC (1 << 11) #define DWC3_TRB_CTRL_SID_SOFN(n) (((n) & 0xffff) << 14) #define DWC3_TRBCTL_NORMAL DWC3_TRB_CTRL_TRBCTL(1) #define DWC3_TRBCTL_CONTROL_SETUP DWC3_TRB_CTRL_TRBCTL(2) #define DWC3_TRBCTL_CONTROL_STATUS2 DWC3_TRB_CTRL_TRBCTL(3) #define DWC3_TRBCTL_CONTROL_STATUS3 DWC3_TRB_CTRL_TRBCTL(4) #define DWC3_TRBCTL_CONTROL_DATA DWC3_TRB_CTRL_TRBCTL(5) #define DWC3_TRBCTL_ISOCHRONOUS_FIRST DWC3_TRB_CTRL_TRBCTL(6) #define DWC3_TRBCTL_ISOCHRONOUS DWC3_TRB_CTRL_TRBCTL(7) #define DWC3_TRBCTL_LINK_TRB DWC3_TRB_CTRL_TRBCTL(8) /** * struct dwc3_trb - transfer request block (hw format) * @bpl: DW0-3 * @bph: DW4-7 * @size: DW8-B * @trl: DWC-F */ struct dwc3_trb { u32 bpl; u32 bph; u32 size; u32 ctrl; } __packed; /** * 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 #define DWC3_MDWIDTH(n) (((n) & 0xff00) >> 8) /* HWPARAMS1 */ #define DWC3_NUM_INT(n) (((n) & (0x3f << 15)) >> 15) /* HWPARAMS7 */ #define DWC3_RAM1_DEPTH(n) ((n) & 0xffff) struct dwc3_request { struct usb_request request; struct list_head list; struct dwc3_ep *dep; u32 start_slot; u8 epnum; struct dwc3_trb *trb; dma_addr_t trb_dma; unsigned direction:1; unsigned mapped:1; unsigned queued:1; }; /* * struct dwc3_scratchpad_array - hibernation scratchpad array * (format defined by hw) */ struct dwc3_scratchpad_array { __le64 dma_adr[DWC3_MAX_HIBER_SCRATCHBUFS]; }; /** * 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 * @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 * @usb2_phy: pointer to USB2 PHY * @usb3_phy: pointer to USB3 PHY * @dcfg: saved contents of DCFG register * @gctl: saved contents of GCTL register * @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 * @needs_fifo_resize: not all users might want fifo resizing, flag it * @resize_fifos: tells us it's ok to reconfigure our TxFIFO sizes. * @isoch_delay: wValue from Set Isochronous Delay request; * @u2sel: parameter from Set SEL request. * @u2pel: parameter from Set SEL request. * @u1sel: parameter from Set SEL request. * @u1pel: parameter from Set SEL request. * @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 *ep0_trb; void *ep0_bounce; u8 *setup_buf; dma_addr_t ctrl_req_addr; dma_addr_t ep0_trb_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 xhci_resources[DWC3_XHCI_RESOURCES_NUM]; struct dwc3_event_buffer **ev_buffs; struct dwc3_ep *eps[DWC3_ENDPOINTS_NUM]; struct usb_gadget gadget; struct usb_gadget_driver *gadget_driver; struct usb_phy *usb2_phy; struct usb_phy *usb3_phy; void __iomem *regs; size_t regs_size; /* used for suspend/resume */ u32 dcfg; u32 gctl; 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_187A 0x5533187a #define DWC3_REVISION_188A 0x5533188a #define DWC3_REVISION_190A 0x5533190a #define DWC3_REVISION_194A 0x5533194a #define DWC3_REVISION_200A 0x5533200a #define DWC3_REVISION_202A 0x5533202a #define DWC3_REVISION_210A 0x5533210a #define DWC3_REVISION_220A 0x5533220a 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; unsigned needs_fifo_resize:1; unsigned resize_fifos:1; unsigned pullups_connected: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; u16 isoch_delay; u16 u2sel; u16 u2pel; u8 u1sel; u8 u1pel; u8 speed; void *mem; struct dwc3_hwparams hwparams; struct dentry *root; struct debugfs_regset32 *regset; u8 test_mode; u8 test_mode_nr; }; /* -------------------------------------------------------------------------- */ /* -------------------------------------------------------------------------- */ 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; /* Within XferNotReady */ #define DEPEVT_STATUS_TRANSFER_ACTIVE (1 << 3) /* Within XferComplete */ #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_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_gadget_resize_tx_fifos(struct dwc3 *dwc); #if IS_ENABLED(CONFIG_USB_DWC3_HOST) || IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) int dwc3_host_init(struct dwc3 *dwc); void dwc3_host_exit(struct dwc3 *dwc); #else static inline int dwc3_host_init(struct dwc3 *dwc) { return 0; } static inline void dwc3_host_exit(struct dwc3 *dwc) { } #endif #if IS_ENABLED(CONFIG_USB_DWC3_GADGET) || IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) int dwc3_gadget_init(struct dwc3 *dwc); void dwc3_gadget_exit(struct dwc3 *dwc); #else static inline int dwc3_gadget_init(struct dwc3 *dwc) { return 0; } static inline void dwc3_gadget_exit(struct dwc3 *dwc) { } #endif /* power management interface */ #if !IS_ENABLED(CONFIG_USB_DWC3_HOST) int dwc3_gadget_prepare(struct dwc3 *dwc); void dwc3_gadget_complete(struct dwc3 *dwc); int dwc3_gadget_suspend(struct dwc3 *dwc); int dwc3_gadget_resume(struct dwc3 *dwc); #else static inline int dwc3_gadget_prepare(struct dwc3 *dwc) { return 0; } static inline void dwc3_gadget_complete(struct dwc3 *dwc) { } static inline int dwc3_gadget_suspend(struct dwc3 *dwc) { return 0; } static inline int dwc3_gadget_resume(struct dwc3 *dwc) { return 0; } #endif /* !IS_ENABLED(CONFIG_USB_DWC3_HOST) */ #endif /* __DRIVERS_USB_DWC3_CORE_H */