libpayload: add UDC driver for Designware controller

Found in rockchips rk3288 as used in google/veyron.

BUG=None
TEST=None
BRANCH=None

Change-Id: I2f2c36c5bea3986a8a37f84c75608b838a8782ae
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 59a0bcd97e8d0f5ce5ac1301910e11b01e2d24b1
Original-Change-Id: Ic89ed54c48d6f9ce125a93caf96471abc6e8cd9d
Original-Signed-off-by: Yunzhi Li <lyz@rock-chips.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/272108
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Original-Commit-Queue: Lin Huang <hl@rock-chips.com>
Original-Tested-by: Lin Huang <hl@rock-chips.com>
Reviewed-on: http://review.coreboot.org/10689
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

2 files changed, 829 insertions, 0 deletions

diff --git a/payloads/libpayload/include/udc/dwc2_udc.h b/payloads/libpayload/include/udc/dwc2_udc.h
new file mode 100644
index 0000000000..741a3609ad
--- /dev/null
+++ b/payloads/libpayload/include/udc/dwc2_udc.h
@@ -0,0 +1,27 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2015 Rockchip Electronics
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef __DESIGNWARE_H__
+#define __DESIGNWARE_H__
+
+#include "udc.h"
+
+struct usbdev_ctrl *dwc2_udc_init(device_descriptor_t *dd);
+
+#endif
diff --git a/payloads/libpayload/include/usb/dwc2_registers.h b/payloads/libpayload/include/usb/dwc2_registers.h
new file mode 100644
index 0000000000..b6ae2ed7ad
--- /dev/null
+++ b/payloads/libpayload/include/usb/dwc2_registers.h
@@ -0,0 +1,802 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2015 Rockchip Electronics
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#ifndef __DWC2_REGISTERS__
+#define __DWC2_REGISTERS__
+
+#define MAX_EPS_CHANNELS 16
+
+typedef struct core_reg {
+	uint32_t gotgctl;
+	uint32_t gotgint;
+	uint32_t gahbcfg;
+	uint32_t gusbcfg;
+	uint32_t grstctl;
+	uint32_t gintsts;
+	uint32_t gintmsk;
+	uint32_t grxstsr;
+	uint32_t grxstsp;
+	uint32_t grxfsiz;
+	uint32_t gnptxfsiz;
+	uint32_t gnptxsts;
+	uint32_t gi2cctl;
+	uint32_t gpvndctl;
+	uint32_t ggpio;
+	uint32_t guid;
+	uint32_t gsnpsid;
+	uint32_t ghwcfg1;
+	uint32_t ghwcfg2;
+	uint32_t ghwcfg3;
+	uint32_t ghwcfg4;
+	uint32_t reserved1[(0x100 - 0x54) / 4];
+	uint32_t hptxfsiz;
+	uint32_t dptxfsiz_dieptxf[MAX_EPS_CHANNELS - 1];
+	uint32_t reserved2[(0x400 - 0x140) / 4];
+} core_reg_t;
+
+typedef struct hc_reg {
+	uint32_t hccharn;
+	uint32_t hcspltn;
+	uint32_t hcintn;
+	uint32_t hcintmaskn;
+	uint32_t hctsizn;
+	uint32_t hcdman;
+	uint32_t reserved[2];
+} hc_reg_t;
+
+/* Host Mode Register Structures */
+typedef struct host_reg {
+	uint32_t hcfg;
+	uint32_t hfir;
+	uint32_t hfnum;
+	uint32_t reserved0;
+	uint32_t hptxsts;
+	uint32_t haint;
+	uint32_t haintmsk;
+	uint32_t reserved1[(0x440 - 0x41c) / 4];
+	uint32_t hprt;
+	uint32_t reserved2[(0x500 - 0x444) / 4];
+	hc_reg_t hchn[MAX_EPS_CHANNELS];
+	uint32_t reserved3[(0x800 - 0x700) / 4];
+} host_reg_t;
+
+typedef struct ep_reg {
+	uint32_t depctl;
+	uint32_t reserved04;
+	uint32_t depint;
+	uint32_t reserved0c;
+	uint32_t deptsiz;
+	uint32_t depdma;
+	uint32_t reserved18;
+	uint32_t depdmab;
+} dwc2_ep_reg_t;
+
+/* Device Mode Registers Structures */
+typedef struct device_reg {
+	uint32_t dcfg;
+	uint32_t dctl;
+	uint32_t dsts;
+	uint32_t unused;
+	uint32_t diepmsk;
+	uint32_t doepmsk;
+	uint32_t daint;
+	uint32_t daintmsk;
+	uint32_t dtknqr1;
+	uint32_t dtknqr2;
+	uint32_t dvbusdis;
+	uint32_t dvbuspulse;
+	uint32_t dtknqr3_dthrctl;
+	uint32_t dtknqr4_fifoemptymsk;
+	uint32_t reserved1[(0x900 - 0x838) / 4];
+
+	dwc2_ep_reg_t inep[MAX_EPS_CHANNELS];
+	dwc2_ep_reg_t outep[MAX_EPS_CHANNELS];
+	uint32_t reserved8[(0xe00 - 0xd00) / 4];
+} device_reg_t;
+
+typedef struct pwr_clk_ctrl_reg {
+	uint32_t pcgcctl;
+	uint32_t reserved[(0x1000 - 0xe04) / 4];
+} pwr_clk_ctrl_reg_t;
+
+typedef struct data_fifo {
+	uint32_t dataport;
+	uint32_t reserved[(0x1000 - 0x004) / 4];
+} data_fifo_t;
+
+typedef struct dwc2_otg_reg {
+	core_reg_t core;
+	host_reg_t host;
+	device_reg_t device;
+	pwr_clk_ctrl_reg_t pcgr;
+	data_fifo_t dfifo[MAX_EPS_CHANNELS];
+	uint32_t reserved[(0x40000 - 0x11000) / 4];
+} dwc2_reg_t;
+
+/**
+ * This union represents the bit fields of the Core AHB Configuration
+ * Register (GAHBCFG).
+ */
+typedef union {
+	/* raw register data */
+	uint32_t d32;
+	/* register bits */
+	struct {
+		unsigned glblintrmsk:1;
+#define GLBINT_ENABLE 1
+
+		unsigned hbstlen:4;
+#define DMA_BURST_SINGLE 0
+#define DMA_BURST_INCR 1
+#define DMA_BURST_INCR4 3
+#define DMA_BURST_INCR8 5
+#define DMA_BURST_INCR16 7
+
+		unsigned dmaen:1;
+		unsigned reserved:1;
+		unsigned nptxfemplvl:1;
+		unsigned ptxfemplvl:1;
+		unsigned reserved9_31:23;
+	};
+} gahbcfg_t;
+
+/**
+ * This union represents the bit fields of the Core USB Configuration
+ * Register (GUSBCFG).
+ */
+typedef union {
+	/* raw register data */
+	uint32_t d32;
+	/* register bits */
+	struct {
+		unsigned toutcal:3;
+		unsigned phyif:1;
+		unsigned ulpiutmisel:1;
+		unsigned fsintf:1;
+		unsigned physel:1;
+		unsigned ddrsel:1;
+		unsigned srpcap:1;
+		unsigned hnpcap:1;
+		unsigned usbtrdtim:4;
+		unsigned reserved14:1;
+		unsigned phylpwrclksel:1;
+		unsigned otgi2csel:1;
+		unsigned ulpifsls:1;
+		unsigned ulpiautores:1;
+		unsigned ulpiclksusm:1;
+		unsigned ulpiextvbusdrv:1;
+		unsigned ulpiextvbusindicator:1;
+		unsigned termseldlpulse:1;
+		unsigned reserved23_28:6;
+		unsigned forcehstmode:1;
+		unsigned forcedevmode:1;
+		unsigned cortxpkt:1;
+	};
+} gusbcfg_t;
+
+/**
+ * This union represents the bit fields of the Core Reset Register
+ * (GRSTCTL).
+ */
+typedef union {
+	/* raw register data */
+	uint32_t d32;
+	/* register bits */
+	struct {
+		/** Core Soft Reset (CSftRst) (Device and Host)
+		 *
+		 * The application can flush the control logic in the
+		 * entire core using this bit. This bit resets the
+		 * pipelines in the AHB Clock domain as well as the
+		 * PHY Clock domain.
+		 *
+		 * The state machines are reset to an IDLE state, the
+		 * control bits in the CSRs are cleared, all the
+		 * transmit FIFOs and the receive FIFO are flushed.
+		 *
+		 * The status mask bits that control the generation of
+		 * the interrupt, are cleared, to clear the
+		 * interrupt. The interrupt status bits are not
+		 * cleared, so the application can get the status of
+		 * any events that occurred in the core after it has
+		 * set this bit.
+		 *
+		 * Any transactions on the AHB are terminated as soon
+		 * as possible following the protocol. Any
+		 * transactions on the USB are terminated immediately.
+		 *
+		 * The configuration settings in the CSRs are
+		 * unchanged, so the software doesn't have to
+		 * reprogram these registers (Device
+		 * Configuration/Host Configuration/Core System
+		 * Configuration/Core PHY Configuration).
+		 *
+		 * The application can write to this bit, any time it
+		 * wants to reset the core. This is a self clearing
+		 * bit and the core clears this bit after all the
+		 * necessary logic is reset in the core, which may
+		 * take several clocks, depending on the current state
+		 * of the core.
+		 */
+		unsigned csftrst:1;
+		/** Hclk Soft Reset
+		 *
+		 * The application uses this bit to reset the control logic in
+		 * the AHB clock domain. Only AHB clock domain pipelines are
+		 * reset.
+		 */
+		unsigned hsftrst:1;
+		/** Host Frame Counter Reset (Host Only)<br>
+		 *
+		 * The application can reset the (micro)frame number
+		 * counter inside the core, using this bit. When the
+		 * (micro)frame counter is reset, the subsequent SOF
+		 * sent out by the core, will have a (micro)frame
+		 * number of 0.
+		 */
+		unsigned frmcntrrst:1;
+		/** In Token Sequence Learning Queue Flush
+		 * (INTknQFlsh) (Device Only)
+		 */
+		unsigned intknqflsh:1;
+		/** RxFIFO Flush (RxFFlsh) (Device and Host)
+		 *
+		 * The application can flush the entire Receive FIFO
+		 * using this bit.	<p>The application must first
+		 * ensure that the core is not in the middle of a
+		 * transaction.	 <p>The application should write into
+		 * this bit, only after making sure that neither the
+		 * DMA engine is reading from the RxFIFO nor the MAC
+		 * is writing the data in to the FIFO.	<p>The
+		 * application should wait until the bit is cleared
+		 * before performing any other operations. This bit
+		 * will takes 8 clocks (slowest of PHY or AHB clock)
+		 * to clear.
+		 */
+		unsigned rxfflsh:1;
+		/** TxFIFO Flush (TxFFlsh) (Device and Host).
+		 *
+		 * This bit is used to selectively flush a single or
+		 * all transmit FIFOs.	The application must first
+		 * ensure that the core is not in the middle of a
+		 * transaction.	 <p>The application should write into
+		 * this bit, only after making sure that neither the
+		 * DMA engine is writing into the TxFIFO nor the MAC
+		 * is reading the data out of the FIFO.	 <p>The
+		 * application should wait until the core clears this
+		 * bit, before performing any operations. This bit
+		 * will takes 8 clocks (slowest of PHY or AHB clock)
+		 * to clear.
+		 */
+		unsigned txfflsh:1;
+
+		/** TxFIFO Number (TxFNum) (Device and Host).
+		 *
+		 * This is the FIFO number which needs to be flushed,
+		 * using the TxFIFO Flush bit. This field should not
+		 * be changed until the TxFIFO Flush bit is cleared by
+		 * the core.
+		 *	 - 0x0 : Non Periodic TxFIFO Flush
+		 *	 - 0x1 : Periodic TxFIFO #1 Flush in device mode
+		 *	   or Periodic TxFIFO in host mode
+		 *	 - 0x2 : Periodic TxFIFO #2 Flush in device mode.
+		 *	 - ...
+		 *	 - 0xF : Periodic TxFIFO #15 Flush in device mode
+		 *	 - 0x10: Flush all the Transmit NonPeriodic and
+		 *	   Transmit Periodic FIFOs in the core
+		 */
+		unsigned txfnum:5;
+		/** Reserved */
+		unsigned reserved11_29:19;
+		/** DMA Request Signal.	 Indicated DMA request is in
+		 * probress.  Used for debug purpose. */
+		unsigned dmareq:1;
+		/** AHB Master Idle.  Indicates the AHB Master State
+		 * Machine is in IDLE condition. */
+		unsigned ahbidle:1;
+	};
+} grstctl_t;
+
+/**
+ * This union represents the bit fields of the Core Interrupt Mask
+ * Register (GINTMSK).
+ */
+typedef union {
+	/* raw register data */
+	uint32_t d32;
+	/* register bits */
+	struct {
+		unsigned curmod:1;
+		unsigned modemis:1;
+		unsigned otgint:1;
+		unsigned sof:1;
+		unsigned rxflvl:1;
+		unsigned nptxfemp:1;
+		unsigned ginnakeff:1;
+		unsigned goutnakeff:1;
+		unsigned reserved8:1;
+		unsigned i2cint:1;
+		unsigned erlysusp:1;
+		unsigned usbsusp:1;
+		unsigned usbrst:1;
+		unsigned enumdone:1;
+		unsigned isooutdrop:1;
+		unsigned eopf:1;
+		unsigned reserved16:1;
+		unsigned epmis:1;
+		unsigned iepint:1;
+		unsigned oepint:1;
+		unsigned incompisoin:1;
+		unsigned incompip:1;
+		unsigned reserved22_23:2;
+		unsigned prtint:1;
+		unsigned hchint:1;
+		unsigned ptxfemp:1;
+		unsigned reserved27:1;
+		unsigned conidstschng:1;
+		unsigned disconnint:1;
+		unsigned sessreqint:1;
+		unsigned wkupint:1;
+	};
+} gintmsk_t;
+
+/**
+* This union represents the bit fields of the Core Non-Periodic
+* Transmit FIFO Size Register(GNPTXFSIZ).
+*/
+typedef union {
+	/* raw register data */
+	uint32_t d32;
+	/* register bits */
+	struct {
+		unsigned nptxfstaddr:16;
+		unsigned nptxfdep:16;
+	};
+} gnptxfsiz_t;
+
+/**
+ * This union represents the bit fields of the Core Receive FIFO Size
+ * Register(GRXFSIZ).
+ */
+typedef union {
+	/* raw register data */
+	uint32_t d32;
+	/* register bits */
+	/*The value in this fieles is in terms of 32-bit words size.
+	 */
+	struct {
+		unsigned rxfdep:16;
+		unsigned reserved:16;
+	};
+} grxfsiz_t;
+
+/**
+* This union represents the bit fields of the Core Device
+* Transmit FIFO Size Register(GNPTXFSIZ).
+*/
+typedef union {
+	/* raw register data */
+	uint32_t d32;
+	/* register bits */
+	struct {
+		unsigned dtxfstaddr:16;
+		unsigned dtxfdep:16;
+	};
+} dtxfsiz_t;
+
+/**
+ * This union represents the bit fields of the Core Interrupt Register
+ * (GINTSTS).
+ */
+typedef union {
+	/* raw register data */
+	uint32_t d32;
+#define SOF_INTR_MASK 0x0008
+	/* register bits */
+	struct {
+		unsigned curmod:1;
+#define HOST_MODE 1
+#define DEVICE_MODE 0
+		unsigned modemis:1;
+		unsigned otgint:1;
+		unsigned sof:1;
+		unsigned rxflvl:1;
+		unsigned nptxfemp:1;
+		unsigned ginnakeff:1;
+		unsigned goutnakeff:1;
+		unsigned reserved8:1;
+		unsigned i2cint:1;
+		unsigned erlysusp:1;
+		unsigned usbsusp:1;
+		unsigned usbrst:1;
+		unsigned enumdone:1;
+		unsigned isooutdrop:1;
+		unsigned eopf:1;
+		unsigned reserved16_17:2;
+		unsigned iepint:1;
+		unsigned oepint:1;
+		unsigned reserved20:1;
+		unsigned incompip:1;
+		unsigned reserved22_23:2;
+		unsigned prtint:1;
+		unsigned hchint:1;
+		unsigned ptxfemp:1;
+		unsigned reserved27:1;
+		unsigned conidstschng:1;
+		unsigned disconnint:1;
+		unsigned sessreqint:1;
+		unsigned wkupint:1;
+	};
+} gintsts_t;
+
+#define GINTSTS_WKUPINT			(1 << 31)
+#define GINTSTS_SESSREQINT		(1 << 30)
+#define GINTSTS_DISCONNINT		(1 << 29)
+#define GINTSTS_CONIDSTSCHNG		(1 << 28)
+#define GINTSTS_LPMTRANRCVD		(1 << 27)
+#define GINTSTS_PTXFEMP			(1 << 26)
+#define GINTSTS_HCHINT			(1 << 25)
+#define GINTSTS_PRTINT			(1 << 24)
+#define GINTSTS_RESETDET		(1 << 23)
+#define GINTSTS_FET_SUSP		(1 << 22)
+#define GINTSTS_INCOMPL_IP		(1 << 21)
+#define GINTSTS_INCOMPL_SOIN		(1 << 20)
+#define GINTSTS_OEPINT			(1 << 19)
+#define GINTSTS_IEPINT			(1 << 18)
+#define GINTSTS_EPMIS			(1 << 17)
+#define GINTSTS_RESTOREDONE		(1 << 16)
+#define GINTSTS_EOPF			(1 << 15)
+#define GINTSTS_ISOUTDROP		(1 << 14)
+#define GINTSTS_ENUMDONE		(1 << 13)
+#define GINTSTS_USBRST			(1 << 12)
+#define GINTSTS_USBSUSP			(1 << 11)
+#define GINTSTS_ERLYSUSP		(1 << 10)
+#define GINTSTS_I2CINT			(1 << 9)
+#define GINTSTS_ULPI_CK_INT		(1 << 8)
+#define GINTSTS_GOUTNAKEFF		(1 << 7)
+#define GINTSTS_GINNAKEFF		(1 << 6)
+#define GINTSTS_NPTXFEMP		(1 << 5)
+#define GINTSTS_RXFLVL			(1 << 4)
+#define GINTSTS_SOF			(1 << 3)
+#define GINTSTS_OTGINT			(1 << 2)
+#define GINTSTS_MODEMIS			(1 << 1)
+#define GINTSTS_CURMODE_HOST		(1 << 0)
+
+/**
+ * This union represents the bit fields of the User HW Config3 Register
+ * (GHWCFG3).
+ */
+typedef union {
+	/* raw register data */
+	uint32_t d32;
+	/* register bits */
+	struct {
+		unsigned reserved:16;
+		unsigned dfifodepth:16;
+	};
+} ghwcfg3_t;
+
+/**
+ * This union represents the bit fields in the Host Configuration Register.
+ */
+typedef union {
+	/* raw register data */
+	uint32_t d32;
+
+	/* register bits */
+	struct {
+		/** FS/LS Phy Clock Select */
+		unsigned fslspclksel:2;
+#define PHYCLK_30_60_MHZ 0
+#define PHYCLK_48_MHZ 1
+#define PHYCLK_6_MHZ 2
+
+		/** FS/LS Only Support */
+		unsigned fslssupp:1;
+	};
+} hcfg_t;
+
+/**
+ * This union represents the bit fields in the Host Port Control and status
+ * Register.
+ */
+typedef union {
+	/* raw register data */
+	uint32_t d32;
+	/* register bits */
+	struct {
+		unsigned prtconnsts:1;
+		unsigned prtconndet:1;
+		unsigned prtena:1;
+		unsigned prtenchng:1;
+		unsigned prtovrcurract:1;
+		unsigned prtovrcurrchng:1;
+		unsigned prtres:1;
+		unsigned prtsusp:1;
+		unsigned prtrst:1;
+		unsigned reserved9:1;
+		unsigned prtlnsts:2;
+		unsigned prtpwr:1;
+		unsigned prttstctl:4;
+		unsigned prtspd:2;
+#define PRTSPD_HIGH 0
+#define PRTSPD_FULL 1
+#define PRTSPD_LOW	2
+		unsigned reserved19_31:13;
+	};
+} hprt_t;
+/* Mask W1C bits */
+#define HPRT_W1C_MASK (~((1 << 1) | (1 << 2) | (1 << 3) | (1 << 5)))
+
+/**
+ * This union represents the bit fields in the Host Channel Characteristics
+ * Register.
+ */
+typedef union {
+	/* raw register data */
+	uint32_t d32;
+
+	/* register bits */
+	struct {
+		/** Maximum packet size in bytes */
+		unsigned mps:11;
+		/** Endpoint number */
+		unsigned epnum:4;
+		/** 0: OUT, 1: IN */
+		unsigned epdir:1;
+		unsigned reserved:1;
+		/** 0: Full/high speed device, 1: Low speed device */
+		unsigned lspddev:1;
+		/** 0: Control, 1: Isoc, 2: Bulk, 3: Intr */
+		unsigned eptype:2;
+		/** Packets per frame for periodic transfers. 0 is reserved. */
+		unsigned multicnt:2;
+		/** Device address */
+		unsigned devaddr:7;
+		/**
+		 * Frame to transmit periodic transaction.
+		 * 0: even, 1: odd
+		 */
+		unsigned oddfrm:1;
+		/** Channel disable */
+		unsigned chdis:1;
+		/** Channel enable */
+		unsigned chen:1;
+	};
+} hcchar_t;
+
+typedef enum {
+	EPDIR_OUT = 0,
+	EPDIR_IN,
+} ep_dir_t;
+
+/**
+ * This union represents the bit fields in the Host All Interrupt
+ * Register.
+ */
+typedef union {
+	/* raw register data */
+	uint32_t d32;
+	/* register bits */
+	struct {
+		/** Transfer Complete */
+		unsigned xfercomp:1;
+		/** Channel Halted */
+		unsigned chhltd:1;
+		/** AHB Error */
+		unsigned ahberr:1;
+		/** STALL Response Received */
+		unsigned stall:1;
+		/** NAK Response Received */
+		unsigned nak:1;
+		/** ACK Response Received */
+		unsigned ack:1;
+		/** NYET Response Received */
+		unsigned nyet:1;
+		/** Transaction Err */
+		unsigned xacterr:1;
+		/** Babble Error */
+		unsigned bblerr:1;
+		/** Frame Overrun */
+		unsigned frmovrun:1;
+		/** Data Toggle Error */
+		unsigned datatglerr:1;
+		/** Reserved */
+		unsigned reserved:21;
+	};
+} hcint_t;
+
+/**
+ * This union represents the bit fields in the Host Channel Transfer Size
+ * Register.
+ */
+typedef union {
+	/* raw register data */
+	uint32_t d32;
+
+	/* register bits */
+	struct {
+		/* Total transfer size in bytes */
+		unsigned xfersize:19;
+		/** Data packets to transfer */
+		unsigned pktcnt:10;
+		/**
+		 * Packet ID for next data packet
+		 * 0: DATA0
+		 * 1: DATA2
+		 * 2: DATA1
+		 * 3: MDATA (non-Control), SETUP (Control)
+		 */
+		unsigned pid:2;
+#define PID_DATA0 0
+#define PID_DATA1 2
+#define PID_DATA2 1
+#define PID_MDATA 3
+#define PID_SETUP 3
+		/* Do PING protocol when 1 */
+		unsigned dopng:1;
+	};
+} hctsiz_t;
+
+/**
+ * This union represents the bit fields in the Host Channel Interrupt Mask
+ * Register.
+ */
+typedef union {
+	/* raw register data */
+	uint32_t d32;
+	/* register bits */
+	struct {
+		unsigned xfercomp:1;
+		unsigned chhltd:1;
+		unsigned ahberr:1;
+		unsigned stall:1;
+		unsigned nak:1;
+		unsigned ack:1;
+		unsigned nyet:1;
+		unsigned xacterr:1;
+		unsigned bblerr:1;
+		unsigned frmovrun:1;
+		unsigned datatglerr:1;
+		unsigned reserved:21;
+	};
+} hcintmsk_t;
+
+typedef union {
+	/* raw register data */
+	uint32_t d32;
+	/* register bits */
+	struct {
+		unsigned devspd:2;
+		unsigned nzstsouthshk:1;
+		unsigned ena32ksusp:1;
+		unsigned devaddr:7;
+		unsigned perfrint:2;
+		unsigned endevoutnak:1;
+		unsigned reservedi14_17:4;
+		unsigned epmiscnt:5;
+		unsigned reserved26_31:9;
+	};
+} dcfg_t;
+
+typedef union {
+	/* raw register data */
+	uint32_t d32;
+	/* register bits */
+	struct {
+		unsigned suspsts:1;
+		unsigned enumspd:2;
+		unsigned errticerr:1;
+		unsigned reserved4_31:28;
+	};
+} dsts_t;
+
+typedef union {
+	/* raw register data */
+	uint32_t d32;
+	/* register bits */
+	struct {
+		unsigned rmtwkupsig:1;
+		unsigned sftdiscon:1;
+		unsigned gnpinnaksts:1;
+		unsigned goutnaksts:1;
+		unsigned tstctl:3;
+		unsigned sgnpinnak:1;
+		unsigned cgnpinnak:1;
+		unsigned sgoutnak:1;
+		unsigned cgoutnak:1;
+		unsigned pwronprgdone:1;
+		unsigned reserved12:1;
+		unsigned gmc:2;
+		unsigned ignrfrmnum:1;
+		unsigned nakonbble:1;
+		unsigned encontbna:1;
+		unsigned reserved19_31:14;
+	};
+} dctl_t;
+
+typedef union {
+	/* raw register data */
+	uint32_t d32;
+	/* register bits */
+	struct {
+#define D0EPCTL_MPS_SHIFT		0
+#define D0EPCTL_MPS_64			0
+#define D0EPCTL_MPS_32			1
+#define D0EPCTL_MPS_16			2
+#define D0EPCTL_MPS_8			3
+		unsigned mps:11;
+		unsigned nextep:4;
+		unsigned usbactep:1;
+		unsigned dpid:1;
+		unsigned naksts:1;
+		unsigned eptype:2;
+		unsigned reserved20:1;
+		unsigned stall:1;
+		unsigned txfnum:4;
+		unsigned cnak:1;
+		unsigned snak:1;
+		unsigned setd0pid:1;
+		unsigned setd1pid:1;
+		unsigned epdis:1;
+		unsigned epena:1;
+	};
+} depctl_t;
+
+typedef union {
+	/* raw register data */
+	uint32_t d32;
+	/* register bits */
+	struct {
+		unsigned xfercompl:1;
+		unsigned epdisbld:1;
+		unsigned ahberr:1;
+		unsigned setup:1;
+		unsigned reserved4_14:12;
+		unsigned stuppktrcvd:1;
+		unsigned reserved16_31:15;
+	};
+} depint_t;
+
+#define DXEPINT_SETUP_RCVD		(1 << 15)
+#define DXEPINT_INEPNAKEFF		(1 << 6)
+#define DXEPINT_BACK2BACKSETUP		(1 << 6)
+#define DXEPINT_INTKNEPMIS		(1 << 5)
+#define DXEPINT_INTKNTXFEMP		(1 << 4)
+#define DXEPINT_OUTTKNEPDIS		(1 << 4)
+#define DXEPINT_TIMEOUT			(1 << 3)
+#define DXEPINT_SETUP			(1 << 3)
+#define DXEPINT_AHBERR			(1 << 2)
+#define DXEPINT_EPDISBLD		(1 << 1)
+#define DXEPINT_XFERCOMPL		(1 << 0)
+
+typedef union {
+	/* raw register data */
+	uint32_t d32;
+	/* register bits */
+	struct {
+		unsigned xfersize:19;
+		unsigned pktcnt:10;
+		unsigned mc:2;
+		unsigned reserved31:1;
+	};
+} depsiz_t;
+
+#define DAINT_OUTEP_SHIFT	MAX_EPS_CHANNELS
+
+#endif