/**************************************************************************** * include/nuttx/usb/ohci.h * * Copyright (C) 2010 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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 /**************************************************************************** * 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 */