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/****************************************************************************
* include/nuttx/usb/ohci.h
*
* Copyright (C) 2010 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* References: "OpenHCI Open Host Controller Interface Specification
* for USB," Release 1.0a, Compaq, Microsoft, National Semiconductor,
* September 14, 1999.
*
* 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.
* 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. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* 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 __INCLUDE_NUTTX_USB_OHCI_H
#define __INCLUDE_NUTTX_USB_OHCI_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <stdint.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Register offsets *********************************************************/
/* Control and status registers (section 7.1) */
#define OHCI_HCIREV_OFFSET 0x0000 /* HcRevision: Version of HCI specification */
#define OHCI_CTRL_OFFSET 0x0004 /* HcControl: HC control */
#define OHCI_CMDST_OFFSET 0x0008 /* HcCommandStatus: HC command status */
#define OHCI_INTST_OFFSET 0x000c /* HcInterruptStatus: HC interrupt status */
#define OHCI_INTEN_OFFSET 0x0010 /* HcInterruptEnable: HC interrupt enable */
#define OHCI_INTDIS_OFFSET 0x0014 /* HcInterruptDisable: HC interrupt disable */
/* Memory pointer registers (section 7.2) */
#define OHCI_HCCA_OFFSET 0x0018 /* HcHCCA: HC communication area */
#define OHCI_PERED_OFFSET 0x001c /* HcPeriodCurrentED: Current isoc or int endpoint desc */
#define OHCI_CTRLHEADED_OFFSET 0x0020 /* HcControlHeadED: First EP desc in the control list */
#define OHCI_CTRLED_OFFSET 0x0024 /* HcControlCurrentED: Current EP desc in the control list */
#define OHCI_BULKHEADED_OFFSET 0x0028 /* HcBulkHeadED: First EP desc in the bulk list */
#define OHCI_BULKED_OFFSET 0x002c /* HcBulkCurrentED: Current EP desc in the bulk list */
#define OHCI_DONEHEAD_OFFSET 0x0030 /* HcDoneHead: Last transfer desc added to DONE queue */
/* Frame counter registers (section 7.3) */
#define OHCI_FMINT_OFFSET 0x0034 /* HcFmInterval: Bit time interval that would not cause overrun */
#define OHCI_FMREM_OFFSET 0x0038 /* HcFmRemaining: Bit time remaining in current frame */
#define OHCI_FMNO_OFFSET 0x003c /* HcFmNumber: Frame number counter */
#define OHCI_PERSTART_OFFSET 0x0040 /* HcPeriodicStart: Time to start processing periodic list */
/* Root hub registers (section 7.4) */
#define OHCI_LSTHRES_OFFSET 0x0044 /* HcLSThreshold: Commit to transfer threshold */
#define OHCI_RHDESCA_OFFSET 0x0048 /* HcRhDescriptorA: Describes root hub (part A) */
#define OHCI_RHDESCB_OFFSET 0x004c /* HcRhDescriptorB: Describes root hub (part B) */
#define OHCI_RHSTATUS_OFFSET 0x0050 /* HcRhStatus: Root hub status */
#define OHCI_MAX_RHPORT 15 /* Maximum number of OHCI root hub ports */
#define OHCI_RHPORTST_OFFSET(n) (0x0054+(((n)-1) << 2))
#define OHCI_RHPORTST1_OFFSET 0x0054 /* HcRhPort1Status: Root hub port status 1 */
#define OHCI_RHPORTST2_OFFSET 0x0058 /* HcRhPort2Status: Root hub port status 2 */
#define OHCI_RHPORTST3_OFFSET 0x005c /* HcRhPort3Status: Root hub port status 3 */
#define OHCI_RHPORTST4_OFFSET 0x0060 /* HcRhPort4Status: Root hub port status 4 */
#define OHCI_RHPORTST5_OFFSET 0x0064 /* HcRhPort5Status: Root hub port status 5 */
#define OHCI_RHPORTST6_OFFSET 0x0068 /* HcRhPort6Status: Root hub port status 6 */
#define OHCI_RHPORTST7_OFFSET 0x006c /* HcRhPort7Status: Root hub port status 7 */
#define OHCI_RHPORTST8_OFFSET 0x0070 /* HcRhPort8Status: Root hub port status 8 */
#define OHCI_RHPORTST9_OFFSET 0x0074 /* HcRhPort9Status: Root hub port status 9 */
#define OHCI_RHPORTST10_OFFSET 0x0078 /* HcRhPort10Status: Root hub port status 10 */
#define OHCI_RHPORTST11_OFFSET 0x007c /* HcRhPort11Status: Root hub port status 11 */
#define OHCI_RHPORTST12_OFFSET 0x0080 /* HcRhPort12Status: Root hub port status 12 */
#define OHCI_RHPORTST13_OFFSET 0x0084 /* HcRhPort13Status: Root hub port status 13 */
#define OHCI_RHPORTST14_OFFSET 0x0088 /* HcRhPort14Status: Root hub port status 14 */
#define OHCI_RHPORTST15_OFFSET 0x008c /* HcRhPort15Status: Root hub port status 15 */
/* Register bit definitions *************************************************/
/* HcRevision: Version of HCI specification (7.1.1) */
#define OHCI_HCIREV_SHIFT (0) /* Bits 0-7: HCI spec version (BCD) */
#define OHCI_HCIREV_MASK (0xff << OHCI_HCIREV_SHIFT)
/* HcControl: HC control (7.1.2) */
#define OHCI_CTRL_CBSR (3 << 0) /* Bit 0: Control/bulk service ratio */
#define OHCI_CTRL_PLE (1 << 2) /* Bit 1: Periodic list enable */
#define OHCI_CTRL_IE (1 << 3) /* Bit 2: Isochronous enable */
#define OHCI_CTRL_CLE (1 << 4) /* Bit 3: Control list enable */
#define OHCI_CTRL_BLE (1 << 5) /* Bit 4: Bulk list enable */
#define OHCI_CTRL_HCFS_SHIFT (6) /* Bits 6-7: Host controller functional state */
#define OHCI_CTRL_HCFS_MASK (3 << OHCI_CTRL_HCFS_SHIFT)
# define OHCI_CTRL_HCFS_RESET (0 << OHCI_CTRL_HCFS_SHIFT)
# define OHCI_CTRL_HCFS_RESUME (1 << OHCI_CTRL_HCFS_SHIFT)
# define OHCI_CTRL_HCFS_OPER (2 << OHCI_CTRL_HCFS_SHIFT)
# define OHCI_CTRL_HCFS_SUSPEND (3 << OHCI_CTRL_HCFS_SHIFT)
#define OHCI_CTRL_IR (1 << 8) /* Bit 8: Interrupt routing */
#define OHCI_CTRL_RWC (1 << 9) /* Bit 9: Remote wakeup connected */
#define OHCI_CTRL_RWE (1 << 10) /* Bit 10: Remote wakeup enable */
/* Bits 11-31: Reserved */
/* HcCommandStatus: HC command status (7.1.3) */
#define OHCI_CMDST_HCR (1 << 0) /* Bit 0: Host controller reset */
#define OHCI_CMDST_CLF (1 << 1) /* Bit 1: Control list filled */
#define OHCI_CMDST_BLF (1 << 2) /* Bit 2: Bulk list filled */
#define OHCI_CMDST_OCR (1 << 3) /* Bit 3: Ownership change request */
/* Bits 4-15: Reserved */
#define OHCI_CMDST_SOC (3 << 16) /* Bit 16: Scheduling overrun count */
/* Bits 17-31: Reserved */
/* HcInterruptStatus: HC interrupt status (7.1.4),
* HcInterruptEnable: HC interrupt enable (7.1.5), and
* HcInterruptDisable: HC interrupt disable (7.1.6)
*/
#define OHCI_INT_SO (1 << 0) /* Bit 0: Scheduling overrun */
#define OHCI_INT_WDH (1 << 1) /* Bit 1: Writeback done head */
#define OHCI_INT_SF (1 << 2) /* Bit 2: Start of frame */
#define OHCI_INT_RD (1 << 3) /* Bit 3: Resume detected */
#define OHCI_INT_UE (1 << 4) /* Bit 4: Unrecoverable error */
#define OHCI_INT_FNO (1 << 5) /* Bit 5: Frame number overflow */
#define OHCI_INT_RHSC (1 << 6) /* Bit 6: Root hub status change */
/* Bits 7-29: Reserved */
#define OHCI_INT_OC (1 << 30) /* Bit 30: Ownership change */
#define OHCI_INT_MIE (1 << 31) /* Bit 31: Master interrupt enable
* (Enable/disable only) */
/* HcHCCA: HC communication area (7.2.1):
*
* 32-bits aligned to 256 byte boundary.
*/
/* HcPeriodCurrentED: Current isoc or int endpoint desc (7.2.2),
* HcControlHeadED: First EP desc in the control list (7.2.3),
* HcControlCurrentED: Current EP desc in the control list (7.2.4),
* HcBulkHeadED: First EP desc in the bulk list (7.2.5),
* HcBulkCurrentED: Current EP desc in the bulk list (7.2.6), and
* HcDoneHead: Last transfer desc added to DONE queue (7.2.7):
*
* All 32-bits aligned to an 8-byte boundary
*/
/* HcFmInterval: Bit time interval that would not cause overrun (7.3.1) */
#define OHCI_FMINT_FI_SHIFT (0) /* Bits 0-13: Frame interval */
#define OHCI_FMINT_FI_MASK (0x3fff << OHCI_FMINT_FI_SHIFT)
/* Bits 14-15: Reserved */
#define OHCI_FMINT_FSMPS_SHIFT (16) /* Bits 16-30: FS largest packet data */
#define OHCI_FMINT_FSMPS_MASK (0x7fff << OHCI_FMINT_FSMPS_SHIFT)
#define OHCI_FMINT_FIT (1 << 31) /* Bit 31: Frame interval toggle */
/* HcFmRemaining: Bit time remaining in current frame (7.3.2) */
#define OHCI_FMREM_FR_SHIFT (0) /* Bits 0-13: Frame remaining */
#define OHCI_FMREM_FR_MASK (0x3fff << OHCI_FMREM_FR_SHIFT)
/* Bits 16-30: Reserved */
#define OHCI_FMINT_FRT (1 << 31) /* Bit 31: Frame remaining toggle */
/* HcFmNumber: Frame number counter (7.3.3) */
#define OHCI_FMNO_FI_SHIFT (0) /* Bits 0-15: Frame number */
#define OHCI_FMNO_FI_MASK (0xffff << OHCI_FMINT_FI_SHIFT)
/* Bits 16-31: Reserved */
/* HcPeriodicStart: Time to start processing periodic list (7.3.4) */
#define OHCI_PERSTART_SHIFT (0) /* Bits 0-13: Periodic start */
#define OHCI_PERSTART_MASK (0x3fff << OHCI_PERSTART_SHIFT)
/* Bits 14-31: Reserved */
/* HcLSThreshold: Commit to transfer threshold (7.3.5) */
#define OHCI_LSTHRES_SHIFT (0) /* Bits 0-11: LS threshold */
#define OHCI_LSTHRES_MASK (0x0fff << OHCI_PERSTART_SHIFT)
/* Bits 12-31: Reserved */
/* HcRhDescriptorN: Describes root hub (part A) (7.4.1) */
#define OHCI_RHDESCA_NDP_SHIFT (0) /* Bits 0-7: Number downstream ports */
#define OHCI_RHDESCA_NDP_MASK (0xff << OHCI_RHDESCA_NDP_SHIFT)
#define OHCI_RHDESCA_PSM (1 << 8) /* Bit 8: Power switching mode */
#define OHCI_RHDESCA_NPS (1 << 9) /* Bit 9: No power switching */
#define OHCI_RHDESCA_DT (1 << 10) /* Bit 10: Device type */
#define OHCI_RHDESCA_OCPM (1 << 11) /* Bit 11: Over current protection mode */
#define OHCI_RHDESCA_NOCP (1 << 12) /* Bit 12: No over current protection */
/* Bits 13-23: Reserved */
#define OHCI_RHDESCA_POTPGT_SHIFT (24) /* Bits 24-31: Power on to power good time */
#define OHCI_RHDESCA_POTPGT_MASK (0xff << OHCI_RHDESCA_POTPGT_SHIFT)
/* HcRhDescriptorB: Describes root hub (part B) (7.4.2) */
#define OHCI_RHDESCB_DR_SHIFT (0) /* Bits 0-15: Device removable */
#define OHCI_RHDESCB_DR_MASK (0xffff << OHCI_RHDESCB_DR_SHIFT)
# define OHCI_RHDESCB_ATTACHED(n) (1 << (OHCI_RHDESCB_DR_SHIFT+(n)))
#define OHCI_RHDESCB_PPCM_SHIFT (16) /* Bits 16-31: Port power control mask */
#define OHCI_RHDESCB_PPCM_MASK (0xffff << OHCI_RHDESCB_PPCM_SHIFT)
# define OHCI_RHDESCB_POWERED(n) (1 << (OHCI_RHDESCB_DR_SHIFT+(n)))
/* HcRhStatus: Root hub status (7.4.3) */
#define OHCI_RHSTATUS_LPS (1 << 0) /* Bit 0: Local power status (read)*/
#define OHCI_RHSTATUS_CGP (1 << 0) /* Bit 0: Clear global power (write)*/
#define OHCI_RHSTATUS_OCI (1 << 1) /* Bit 1: Over current indicator */
/* Bits 2-14: Reserved */
#define OHCI_RHSTATUS_DRWE (1 << 15) /* Bit 15: Device remote wakeup enable */
#define OHCI_RHSTATUS_LPSC (1 << 16) /* Bit 16: Local power status change (read) */
#define OHCI_RHSTATUS_SGP (1 << 16) /* Bit 16: Set global power (write) */
#define OHCI_RHSTATUS_OCIC (1 << 17) /* Bit 17: Overcurrent indicator change */
/* Bits 18-30: Reserved */
#define OHCI_RHSTATUS_CRWE (1 << 31) /* Bit 31: Clear remote wakeup enable */
/* HcRhPortStatus: Root hub port status (7.4.4) */
#define OHCI_RHPORTST_CCS (1 << 0) /* Bit 0: Current connect status */
#define OHCI_RHPORTST_PES (1 << 1) /* Bit 1: Port enable status */
#define OHCI_RHPORTST_PSS (1 << 2) /* Bit 2: Port suspend status */
#define OHCI_RHPORTST_POCI (1 << 3) /* Bit 3: Port over current indicator */
#define OHCI_RHPORTST_PRS (1 << 4) /* Bit 4: Port reset status */
/* Bits 5-7: Reserved */
#define OHCI_RHPORTST_PPS (1 << 8) /* Bit 8: Port power status */
#define OHCI_RHPORTST_LSDA (1 << 9) /* Bit 9: Low speed device attached */
/* Bits 10-15: Reserved */
#define OHCI_RHPORTST_CSC (1 << 16) /* Bit 16: Connect status change */
#define OHCI_RHPORTST_PESC (1 << 17) /* Bit 17: Port enable status change */
#define OHCI_RHPORTST_PSSC (1 << 18) /* Bit 18: Port suspend status change */
#define OHCI_RHPORTST_OCIC (1 << 19) /* Bit 19: Port over current indicator change */
#define OHCI_RHPORTST_PRSC (1 << 20) /* Bit 20: Port reset status change */
/* Bits 21-31: Reserved */
/* Transfer Descriptors *****************************************************/
/* Endpoint Descriptor Offsets (4.2.1) */
#define ED_CONTROL_OFFSET (0x00) /* ED status/control bits */
#define ED_TAILP_OFFSET (0x04) /* TD Queue Tail Pointer (TailP) */
#define ED_HEADP_OFFSET (0x08) /* TD Queue Head Pointer (HeadP) */
#define ED_NEXTED_OFFSET (0x0c) /* Next Endpoint Descriptor (NextED) */
/* Endpoint Descriptor Bit Definitions (4.2.2) */
#define ED_CONTROL_FA_SHIFT (0) /* Bits 0-6: Function Address */
#define ED_CONTROL_FA_MASK (0x7f << ED_CONTROL_FA_SHIFT)
#define ED_CONTROL_EN_SHIFT (7) /* Bits 7-10: Endpoint number */
#define ED_CONTROL_EN_MASK (15 << ED_CONTROL_EN_SHIFT)
#define ED_CONTROL_D_SHIFT (11) /* Bits 11-12: Direction */
#define ED_CONTROL_D_MASK (3 << ED_CONTROL_D_SHIFT)
# define ED_CONTROL_D_TD1 (0 << ED_CONTROL_D_SHIFT) /* Get direction from TD */
# define ED_CONTROL_D_OUT (1 << ED_CONTROL_D_SHIFT) /* OUT */
# define ED_CONTROL_D_IN (2 << ED_CONTROL_D_SHIFT) /* IN */
# define ED_CONTROL_D_TD2 (3 << ED_CONTROL_D_SHIFT) /* Get direction from TD */
#define ED_CONTROL_S (1 << 13) /* Bit 13: Speed (low) */
#define ED_CONTROL_K (1 << 14) /* Bit 14: Skip */
#define ED_CONTROL_F (1 << 15) /* Bit 15: Format (isochronous) */
#define ED_CONTROL_MPS_SHIFT (16) /* Bits 16-26: Maximum packet size */
#define ED_CONTROL_MPS_MASK (0x7ff << ED_CONTROL_MPS_SHIFT)
#define ED_HEADP_ADDR_SHIFT (0)
#define ED_HEADP_ADDR_MASK 0xfffffff0
#define ED_HEADP_H (1 << 0) /* Bit 0: Halted */
#define ED_HEADP_C (1 << 1) /* Bit 1: Toggle carry */
/* General Transfer Descriptor Offsets (4.3.1) */
#define GTD_STATUS_OFFSET (0x00) /* TD status bits */
#define GTD_CBP_OFFSET (0x04) /* Current Buffer Pointer (CBP) */
#define GTD_NEXTTD_OFFSET (0x08) /* Next TD (NextTD) */
#define GTD_BE_OFFSET (0x0c) /* Buffer End (BE) */
/* General Transfer Descriptor Bit Definitions */
/* Bits 0-17: Reserved */
#define GTD_STATUS_R (1 << 18) /* Bit 18: Buffer rounding */
#define GTD_STATUS_DP_SHIFT (19) /* Bits 19-20: Direction/PID */
#define GTD_STATUS_DP_MASK (3 << GTD_STATUS_DP_SHIFT)
# define GTD_STATUS_DP_SETUP (0 << GTD_STATUS_DP_SHIFT) /* To endpoint */
# define GTD_STATUS_DP_OUT (1 << GTD_STATUS_DP_SHIFT) /* To endpoint */
# define GTD_STATUS_DP_IN (2 << GTD_STATUS_DP_SHIFT) /* From endpoint */
#define GTD_STATUS_DI_SHIFT (21) /* Bits 21-23: Delay input */
#define GTD_STATUS_DI_MASK (7 << GTD_STATUS_DI_SHIFT)
#define GTD_STATUS_T_SHIFT (24) /* Bits 24-25: Data Toggle */
#define GTD_STATUS_T_MASK (3 << GTD_STATUS_T_SHIFT)
# define GTD_STATUS_T_TOGGLE (0 << GTD_STATUS_T_SHIFT)
# define GTD_STATUS_T_DATA0 (2 << GTD_STATUS_T_SHIFT)
# define GTD_STATUS_T_DATA1 (3 << GTD_STATUS_T_SHIFT)
#define GTD_STATUS_EC_SHIFT (26) /* Bits 26-27: Error count */
#define GTD_STATUS_EC_MASK (3 << GTD_STATUS_EC_SHIFT)
#define GTD_STATUS_CC_SHIFT (28) /* Bits 28-31: Condition code */
#define GTD_STATUS_CC_MASK (15 << GTD_STATUS_CC_SHIFT)
/* Isochronous Transfer Descriptor Offsets (4.3.2) */
#define ITD_STATUS_OFFSET (0x00) /* TD status bits */
#define ITD_BP0_OFFSET (0x04) /* Buffer page 0 (BP0) */
#define ITD_NEXTTD_OFFSET (0x08) /* Next TD (NextTD) */
#define ITD_BE_OFFSET (0x0c) /* Buffer End (BE) */
#define ITD_NPSW (8)
#define ITD_PSW0_OFFSET (0x10) /* Offset0/PSW0 */
#define ITD_PSW1_OFFSET (0x12) /* Offset1/PSW1 */
#define ITD_PSW2_OFFSET (0x14) /* Offset2/PSW2 */
#define ITD_PSW3_OFFSET (0x16) /* Offset3/PSW3 */
#define ITD_PSW4_OFFSET (0x18) /* Offset4/PSW4 */
#define ITD_PSW5_OFFSET (0x1a) /* Offset5/PSW5 */
#define ITD_PSW6_OFFSET (0x1c) /* Offset6/PSW6 */
#define ITD_PSW7_OFFSET (0x1e) /* Offset7/PSW7 */
/* Condition codes (Table 4-7) */
#define TD_CC_NOERROR 0x00
#define TD_CC_CRC 0x01
#define TD_CC_BITSTUFFING 0x02
#define TD_CC_DATATOGGLEMISMATCH 0x03
#define TD_CC_STALL 0x04
#define TD_CC_DEVNOTRESPONDING 0x05
#define TD_CC_PIDCHECKFAILURE 0x06
#define TD_CC_UNEXPECTEDPID 0x07
#define TD_CC_DATAOVERRUN 0x08
#define TD_CC_DATAUNDERRUN 0x09
#define TD_CC_BUFFEROVERRUN 0x0c
#define TD_CC_BUFFERUNDERRUN 0x0d
#define TD_CC_NOTACCESSED 0x0f
/* Host Controller Communications Area Format (4.4.1) ***********************/
/* HccaInterrruptTable: 32x32-bit pointers to interrupt EDs */
#define HCCA_INTTBL_OFFSET (0x00)
#define HCCA_INTTBL_WSIZE (32)
#define HCCA_INTTBL_BSIZE (HCCA_INTTBL_WSIZE*4)
/* HccaFrameNumber: Current frame number */
#define HCCA_FMNO_OFFSET (0x80)
#define HCCA_FMNO_BSIZE (2)
/* HccaPad1: Zero when frame no. updated */
#define HCCA_PAD1_OFFSET (0x82)
#define HCCA_PAD1_BSIZE (2)
/* HccaDoneHead: When the HC reaches the end of a frame and its deferred
* interrupt register is 0, it writes the current value of its HcDoneHead to
* this location and generates an interrupt.
*/
#define HCCA_DONEHEAD_OFFSET (0x84)
#define HCCA_DONEHEAD_BSIZE (4)
/* 0x88: 116 bytes reserved */
#define HCCA_RESERVED_OFFSET (0x88)
#define HCCA_RESERVED_BSIZE (116)
/****************************************************************************
* Public Types
****************************************************************************/
/* Endpoint Descriptor Offsets (4.2.1) */
struct ohci_ed_s
{
volatile uint32_t ctrl; /* ED status/control bits */
volatile uint32_t tailp; /* TD Queue Tail Pointer (TailP) */
volatile uint32_t headp; /* TD Queue Head Pointer (HeadP) */
volatile uint32_t nexted; /* Next Endpoint Descriptor (NextED) */
};
/* General Transfer Descriptor (4.3.1) */
struct ohci_gtd_s
{
volatile uint32_t ctrl; /* TD status/control bits */
volatile uint32_t cbp; /* Current Buffer Pointer (CBP) */
volatile uint32_t nexttd; /* Next TD (NextTD) */
volatile uint32_t be; /* Buffer End (BE) */
};
/* Isochronous Transfer Descriptor Offsets (4.3.2) */
struct ohci_itd_s
{
volatile uint32_t ctrl; /* TD status/control bits */
volatile uint32_t bp0; /* Buffer page 0 (BP0 */
volatile uint32_t nexttd; /* Next TD (NextTD) */
volatile uint32_t be; /* Buffer End (BE) */
volatile uint16_t psw[ITD_NPSW]; /* Offset/PSW */
};
/* Host Controller Communications Area Format (4.4.1) */
struct ohci_hcca_s
{
/* HccaInterrruptTable: 32x32-bit pointers to interrupt EDs */
volatile uint32_t inttbl[HCCA_INTTBL_WSIZE];
/* HccaFrameNumber: Current frame number and
* HccaPad1: Zero when frame no. updated
*/
volatile uint16_t fmno;
volatile uint16_t pad1;
/* HccaDoneHead: When the HC reaches the end of a frame and its deferred
* interrupt register is 0, it writes the current value of its HcDoneHead to
* this location and generates an interrupt.
*/
volatile uint32_t donehead;
volatile uint8_t reserved[HCCA_RESERVED_BSIZE];
volatile uint32_t extra;
};
/****************************************************************************
* Public Data
****************************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __INCLUDE_NUTTX_USB_OHCI_H */
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