diff options
Diffstat (limited to 'package/platform/lantiq/ltq-hcd/src/ifxhcd.h')
| -rw-r--r-- | package/platform/lantiq/ltq-hcd/src/ifxhcd.h | 758 |
1 files changed, 758 insertions, 0 deletions
diff --git a/package/platform/lantiq/ltq-hcd/src/ifxhcd.h b/package/platform/lantiq/ltq-hcd/src/ifxhcd.h new file mode 100644 index 0000000000..243c5f57e3 --- /dev/null +++ b/package/platform/lantiq/ltq-hcd/src/ifxhcd.h @@ -0,0 +1,758 @@ +/***************************************************************************** + ** FILE NAME : ifxhcd.h + ** PROJECT : IFX USB sub-system V3 + ** MODULES : IFX USB sub-system Host and Device driver + ** SRC VERSION : 3.2 + ** DATE : 1/Jan/2011 + ** AUTHOR : Chen, Howard + ** DESCRIPTION : This file contains the structures, constants, and interfaces for + ** the Host Contoller Driver (HCD). + ** + ** The Host Controller Driver (HCD) is responsible for translating requests + ** from the USB Driver into the appropriate actions on the IFXUSB controller. + ** It isolates the USBD from the specifics of the controller by providing an + ** API to the USBD. + ** FUNCTIONS : + ** COMPILER : gcc + ** REFERENCE : Synopsys DWC-OTG Driver 2.7 + ** COPYRIGHT : Copyright (c) 2010 + ** LANTIQ DEUTSCHLAND GMBH, + ** Am Campeon 3, 85579 Neubiberg, Germany + ** + ** 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; either version 2 of the License, or + ** (at your option) any later version. + ** + ** Version Control Section ** + ** $Author$ + ** $Date$ + ** $Revisions$ + ** $Log$ Revision history + *****************************************************************************/ + +/* + * This file contains code fragments from Synopsys HS OTG Linux Software Driver. + * For this code the following notice is applicable: + * + * ========================================================================== + * + * Synopsys HS OTG Linux Software Driver and documentation (hereinafter, + * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless + * otherwise expressly agreed to in writing between Synopsys and you. + * + * The Software IS NOT an item of Licensed Software or Licensed Product under + * any End User Software License Agreement or Agreement for Licensed Product + * with Synopsys or any supplement thereto. You are permitted to use and + * redistribute this Software in source and binary forms, with or without + * modification, provided that redistributions of source code must retain this + * notice. You may not view, use, disclose, copy or distribute this file or + * any information contained herein except pursuant to this license grant from + * Synopsys. If you do not agree with this notice, including the disclaimer + * below, then you are not authorized to use the Software. + * + * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS 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. + * ========================================================================== */ + +/*! + \defgroup IFXUSB_HCD HCD Interface + \ingroup IFXUSB_DRIVER_V3 + \brief The Host Controller Driver (HCD) is responsible for translating requests + from the USB Driver into the appropriate actions on the IFXUSB controller. + It isolates the USBD from the specifics of the controller by providing an + API to the USBD. + */ + + +/*! + \file ifxhcd.h + \ingroup IFXUSB_DRIVER_V3 + \brief This file contains the structures, constants, and interfaces for + the Host Contoller Driver (HCD). + */ + +#if !defined(__IFXHCD_H__) +#define __IFXHCD_H__ + + +#define __STRICT_ORDER__ + + +#include <linux/list.h> +#include <linux/usb.h> + +#include <linux/usb/hcd.h> + +#include "ifxusb_cif.h" +#include "ifxusb_plat.h" + + +#undef __INNAKSTOP__ +#if !defined(__INNAKSTOP__) && defined(__INNAKSTOP_CTRL__) + #define __INNAKSTOP__ 1 +#endif +#if !defined(__INNAKSTOP__) && defined(__INNAKSTOP_BULK__) + #define __INNAKSTOP__ 1 +#endif + +#undef __PINGSTOP__ +#if !defined(__PINGSTOP__) && defined(__PINGSTOP_CTRL__) + #define __PINGSTOP__ 1 +#endif +#if !defined(__PINGSTOP__) && defined(__PINGSTOP_BULK__) + #define __PINGSTOP__ 1 +#endif + +#undef __NAKSTOP__ +#if defined(__INNAKSTOP__) || defined(__PINGSTOP__) + #define __NAKSTOP__ 1 +#endif + + +/* Phases for control transfers.*/ +typedef enum ifxhcd_epqh_phase { + EPQH_IDLE=0, + EPQH_DISABLING, +// EPQH_COMPLETING, + EPQH_STDBY, + EPQH_READY, + EPQH_ACTIVE +} ifxhcd_epqh_phase_e; + +/* Phases for control transfers.*/ +typedef enum ifxhcd_urbd_phase { + URBD_IDLE=0, + URBD_ACTIVE, + URBD_STARTING, + URBD_STARTED, + URBD_FINISHING, //URB_Complete already scheduled + URBD_COMPLETING, //To URB_Complete, it's normal finish + URBD_DEQUEUEING, //To URB_Complete, it's abnormal finish +} ifxhcd_urbd_phase_e; + +/* Phases for control transfers.*/ +typedef enum ifxhcd_hc_phase { + HC_IDLE=0, + HC_ASSIGNED, + HC_WAITING, + HC_STARTING, + HC_STARTED, + HC_STOPPING, + HC_STOPPED, +} ifxhcd_hc_phase_e; + +/*! + \addtogroup IFXUSB_HCD + */ +/*@{*/ + +/*! \typedef ifxhcd_control_phase_e + \brief Phases for control transfers. +*/ + +typedef enum ifxhcd_control_phase { + IFXHCD_CONTROL_SETUP, + IFXHCD_CONTROL_DATA, + IFXHCD_CONTROL_STATUS +} ifxhcd_control_phase_e; + +/*! \typedef ifxhcd_halt_status_e + \brief Reasons for halting a host channel. +*/ +typedef enum ifxhcd_halt_status +{ + HC_XFER_NO_HALT_STATUS, // Initial + HC_XFER_COMPLETE, // Xact complete without error, upward + HC_XFER_URB_COMPLETE, // Xfer complete without error, short upward + HC_XFER_STALL, // HC stopped abnormally, upward/downward + HC_XFER_XACT_ERR, // HC stopped abnormally, upward + HC_XFER_FRAME_OVERRUN, // HC stopped abnormally, upward + HC_XFER_BABBLE_ERR, // HC stopped abnormally, upward + HC_XFER_AHB_ERR, // HC stopped abnormally, upward + HC_XFER_DATA_TOGGLE_ERR, + HC_XFER_URB_DEQUEUE, // HC stopper manually, downward + HC_XFER_NO_URB, // HC stopper manually, downward + HC_XFER_NO_EPQH, // HC stopper manually, downward + #ifdef __NAKSTOP__ + HC_XFER_NAK, // HC stopped by nak monitor, downward + #endif + #if defined(__INTRNAKRETRY__) || defined(__INTRINCRETRY__) + HC_XFER_INTR_NAK_RETRY, // HC stopped by nak monitor, downward + #endif +} ifxhcd_halt_status_e; + +struct ifxhcd_urbd; +struct ifxhcd_hc ; +struct ifxhcd_epqh ; +struct ifxhcd_hcd; + +/*! typedef ifxhcd_urbd_t + \brief A URB Descriptor (URBD) holds the state of a bulk, control, + interrupt, or isochronous transfer. A single URBD is created for each URB + (of one of these types) submitted to the HCD. The transfer associated with + a URBD may require one or multiple transactions. + + A URBD is linked to a EP Queue Head, which is entered in either the + isoc, intr or non-periodic schedule for execution. When a URBD is chosen for + execution, some or all of its transactions may be executed. After + execution, the state of the URBD is updated. The URBD may be retired if all + its transactions are complete or if an error occurred. Otherwise, it + remains in the schedule so more transactions can be executed later. + */ +typedef struct ifxhcd_urbd { + ifxhcd_urbd_phase_e phase; + struct list_head ql; // Hook for EPQH->urbd_list + struct urb *urb; /*!< URB for this transfer */ + //struct urb { + // struct list_head urb_list; + // struct list_head anchor_list; + // struct usb_anchor * anchor; + // struct usb_device * dev; + // struct usb_host_endpoint * ep; + // unsigned int pipe; + // int status; + // unsigned int transfer_flags; + // void * transfer_buffer; + // dma_addr_t transfer_dma; + // u32 transfer_buffer_length; + // u32 actual_length; + // unsigned char * setup_packet; + // dma_addr_t setup_dma; + // int start_frame; + // int number_of_packets; + // int interval; + // int error_count; + // void * context; + // usb_complete_t complete; + // struct usb_iso_packet_descriptor iso_frame_desc[0]; + //}; + //urb_list For use by current owner of the URB. + //anchor_list membership in the list of an anchor + //anchor to anchor URBs to a common mooring + //dev Identifies the USB device to perform the request. + //ep Points to the endpoint's data structure. Will + // eventually replace pipe. + //pipe Holds endpoint number, direction, type, and more. + // Create these values with the eight macros available; u + // sb_{snd,rcv}TYPEpipe(dev,endpoint), where the TYPE is + // "ctrl", "bulk", "int" or "iso". For example + // usb_sndbulkpipe or usb_rcvintpipe. Endpoint numbers + // range from zero to fifteen. Note that "in" endpoint two + // is a different endpoint (and pipe) from "out" endpoint + // two. The current configuration controls the existence, + // type, and maximum packet size of any given endpoint. + //status This is read in non-iso completion functions to get + // the status of the particular request. ISO requests + // only use it to tell whether the URB was unlinked; + // detailed status for each frame is in the fields of + // the iso_frame-desc. + //transfer_flags A variety of flags may be used to affect how URB + // submission, unlinking, or operation are handled. + // Different kinds of URB can use different flags. + // URB_SHORT_NOT_OK + // URB_ISO_ASAP + // URB_NO_TRANSFER_DMA_MAP + // URB_NO_SETUP_DMA_MAP + // URB_NO_FSBR + // URB_ZERO_PACKET + // URB_NO_INTERRUPT + //transfer_buffer This identifies the buffer to (or from) which the I/O + // request will be performed (unless URB_NO_TRANSFER_DMA_MAP + // is set). This buffer must be suitable for DMA; allocate it + // with kmalloc or equivalent. For transfers to "in" + // endpoints, contents of this buffer will be modified. This + // buffer is used for the data stage of control transfers. + //transfer_dma When transfer_flags includes URB_NO_TRANSFER_DMA_MAP, the + // device driver is saying that it provided this DMA address, + // which the host controller driver should use in preference + // to the transfer_buffer. + //transfer_buffer_length How big is transfer_buffer. The transfer may be broken + // up into chunks according to the current maximum packet size + // for the endpoint, which is a function of the configuration + // and is encoded in the pipe. When the length is zero, neither + // transfer_buffer nor transfer_dma is used. + //actual_length This is read in non-iso completion functions, and it tells + // how many bytes (out of transfer_buffer_length) were transferred. + // It will normally be the same as requested, unless either an error + // was reported or a short read was performed. The URB_SHORT_NOT_OK + // transfer flag may be used to make such short reads be reported + // as errors. + //setup_packet Only used for control transfers, this points to eight bytes of + // setup data. Control transfers always start by sending this data + // to the device. Then transfer_buffer is read or written, if needed. + //setup_dma For control transfers with URB_NO_SETUP_DMA_MAP set, the device + // driver has provided this DMA address for the setup packet. The + // host controller driver should use this in preference to setup_packet. + //start_frame Returns the initial frame for isochronous transfers. + //number_of_packets Lists the number of ISO transfer buffers. + //interval Specifies the polling interval for interrupt or isochronous transfers. + // The units are frames (milliseconds) for for full and low speed devices, + // and microframes (1/8 millisecond) for highspeed ones. + //error_count Returns the number of ISO transfers that reported errors. + //context For use in completion functions. This normally points to request-specific + // driver context. + //complete Completion handler. This URB is passed as the parameter to the completion + // function. The completion function may then do what it likes with the URB, + // including resubmitting or freeing it. + //iso_frame_desc[0] Used to provide arrays of ISO transfer buffers and to collect the transfer + // status for each buffer. + + struct ifxhcd_epqh *epqh; + // Actual data portion, not SETUP or STATUS in case of CTRL XFER + // DMA adjusted + uint8_t *setup_buff; /*!< Pointer to the entire transfer buffer. (CPU accessable)*/ + uint8_t *xfer_buff; /*!< Pointer to the entire transfer buffer. (CPU accessable)*/ + uint32_t xfer_len; /*!< Total number of bytes to transfer in this xfer. */ + + #if defined(__UNALIGNED_BUF_ADJ__) +// uint8_t using_aligned_setup; + uint8_t *aligned_setup; +// uint8_t using_aligned_buf; + uint8_t *aligned_buf; + unsigned aligned_buf_len : 19; + #endif + #if defined(__UNALIGNED_BUF_ADJ__) || defined(__UNALIGNED_BUF_CHK__) + unsigned aligned_checked : 1; + #endif + unsigned is_in :1; + #ifndef __STRICT_ORDER__ + struct tasklet_struct complete_urb_sub; + #endif + + // For ALL XFER + uint8_t error_count; /*!< Holds the number of bus errors that have occurred for a transaction + within this transfer. + */ + // For ISOC XFER only + #ifdef __EN_ISOC__ + int isoc_frame_index; /*!< Index of the next frame descriptor for an isochronous transfer. A + frame descriptor describes the buffer position and length of the + data to be transferred in the next scheduled (micro)frame of an + isochronous transfer. It also holds status for that transaction. + The frame index starts at 0. + */ + #endif + int status; +} ifxhcd_urbd_t; + +/*! typedef ifxhcd_epqh_t + \brief A EP Queue Head (EPQH) holds the static characteristics of an endpoint and + maintains a list of transfers (URBDs) for that endpoint. A EPQH structure may + be entered in either the isoc, intr or non-periodic schedule. + */ + +typedef struct ifxhcd_epqh { + struct ifxhcd_hcd *ifxhcd; + struct usb_host_endpoint *sysep; + uint8_t devno; + + ifxhcd_epqh_phase_e phase; + struct list_head ql_all; + struct list_head ql; // Hook for EP Queues + struct list_head urbd_list; /*!< List of URBDs for this EPQH. */ + #ifdef __STRICT_ORDER__ + struct list_head release_list; + struct tasklet_struct complete_urb_sub; + #endif + struct ifxhcd_hc *hc; /*!< Host channel currently processing transfers for this EPQH. */ + struct ifxhcd_urbd *urbd; /*!< URBD currently assigned to a host channel for this EPQH. */ + uint8_t ep_type; /*!< Endpoint type. One of the following values: + - IFXUSB_EP_TYPE_CTRL + - IFXUSB_EP_TYPE_ISOC + - IFXUSB_EP_TYPE_BULK + - IFXUSB_EP_TYPE_INTR + */ + uint16_t mps; /*!< wMaxPacketSize Field of Endpoint Descriptor. */ + #ifdef __EPQD_DESTROY_TIMEOUT__ + struct timer_list destroy_timer; + #endif + + unsigned need_split : 1 ; + unsigned do_ping : 1 ; /*!< Set to 1 to indicate that a PING request should be issued on this + channel. If 0, process normally. + */ + unsigned pause : 1; + unsigned period_do : 1; + uint16_t interval; /*!< Interval between transfers in (micro)frames. (for INTR)*/ + uint16_t period_counter; /*!< Interval between transfers in (micro)frames. */ + + #ifdef __EN_ISOC__ + struct tasklet_struct tasklet_next_isoc; + uint8_t isoc_now; + uint32_t isoc_start_frame; + // For SPLITed ISOC XFER only + #ifdef __EN_ISOC_SPLIT__ + uint8_t isoc_split_pos; /*!< Position of the ISOC split on full/low speed */ + uint16_t isoc_split_offset;/*!< Position of the ISOC split in the buffer for the current frame */ + #endif + #endif + spinlock_t urbd_list_lock; + int urbd_count; +} ifxhcd_epqh_t; + + +/*! typedef ifxhcd_hc_t + \brief Host channel descriptor. This structure represents the state of a single + host channel when acting in host mode. It contains the data items needed to + transfer packets to an endpoint via a host channel. + */ +typedef struct ifxhcd_hc +{ + struct ifxhcd_epqh *epqh ; /*!< EP Queue Head for the transfer being processed by this channel. */ + uint8_t hc_num ; /*!< Host channel number used for register address lookup */ + uint8_t *xfer_buff ; /*!< Pointer to the entire transfer buffer. */ + uint32_t xfer_count ; /*!< Number of bytes transferred so far. The offset of the begin of the buf */ + uint32_t xfer_len ; /*!< Total number of bytes to transfer in this xfer. */ + uint16_t start_pkt_count ; /*!< Packet count at start of transfer. Used to calculate the actual xfer size*/ + ifxhcd_halt_status_e halt_status; /*!< Reason for halting the host channel. */ + ifxhcd_hc_phase_e phase; + + unsigned dev_addr : 7; /*!< Device to access */ + unsigned ep_num : 4; /*!< EP to access */ + unsigned is_in : 1; /*!< EP direction. 0: OUT, 1: IN */ + unsigned speed : 2; /*!< EP speed. */ + unsigned ep_type : 2; /*!< Endpoint type. */ + unsigned mps :11; /*!< Max packet size in bytes */ + unsigned data_pid_start : 2; /*!< PID for initial transaction. */ + unsigned short_rw : 1; /*!< When Tx, means termination needed. + When Rx, indicate Short Read */ + /* Split settings for the host channel */ + unsigned split : 2; /*!< Split: 0-Non Split, 1-SSPLIT, 2&3 CSPLIT */ + + unsigned sof_delay :16; + unsigned erron : 1; + + #ifdef __NAKSTOP__ + unsigned stop_on : 1; +// unsigned wait_for_sof_quick : 1; + #endif + + ifxhcd_control_phase_e control_phase; /*!< Current phase for control transfers (Setup, Data, or Status). */ + uint32_t ssplit_out_xfer_count; /*!< How many bytes transferred during SSPLIT OUT */ + #ifdef __DEBUG__ + uint32_t start_hcchar_val; + #endif + uint32_t hcchar; + + /* Split settings for the host channel */ + uint8_t hub_addr; /*!< Address of high speed hub */ + uint8_t port_addr; /*!< Port of the low/full speed device */ + #if defined(__EN_ISOC__) && defined(__EN_ISOC_SPLIT__) + uint8_t isoc_xact_pos; /*!< Split transaction position */ + #endif +} ifxhcd_hc_t; + + +/*! typedef ifxhcd_hcd_t + \brief This structure holds the state of the HCD, including the non-periodic and + periodic schedules. + */ +typedef struct ifxhcd_hcd +{ + struct device *dev; + struct hc_driver hc_driver; + ifxusb_core_if_t core_if; /*!< Pointer to the core interface structure. */ + struct usb_hcd *syshcd; + + volatile union + { + uint32_t d32; + struct + { + unsigned port_connect_status_change : 1; + unsigned port_connect_status : 1; + unsigned port_reset_change : 1; + unsigned port_enable_change : 1; + unsigned port_suspend_change : 1; + unsigned port_over_current_change : 1; + unsigned reserved : 27; + } b; + } flags; /*!< Internal HCD Flags */ + + struct ifxhcd_hc ifxhc[MAX_EPS_CHANNELS]; /*!< Array of pointers to the host channel descriptors. Allows accessing + a host channel descriptor given the host channel number. This is + useful in interrupt handlers. + */ + uint8_t *status_buf; /*!< Buffer to use for any data received during the status phase of a + control transfer. Normally no data is transferred during the status + phase. This buffer is used as a bit bucket. + */ + #define IFXHCD_STATUS_BUF_SIZE 64 /*!< buffer size of status phase in CTRL xfer */ + + struct list_head epqh_list_all; + struct list_head epqh_list_np; + struct list_head epqh_list_intr; + #ifdef __EN_ISOC__ + struct list_head epqh_list_isoc; + #endif + + uint32_t lastframe; + + uint16_t pkt_remaining; + uint16_t pkt_remaining_reload; + uint16_t pkt_remaining_reload_hs; + uint16_t pkt_remaining_reload_fs; + uint16_t pkt_remaining_reload_ls; + #define PKT_REMAINING_RELOAD_HS 88 + #define PKT_REMAINING_RELOAD_FS 10 + #define PKT_REMAINING_RELOAD_LS 20 + #ifdef __EN_ISOC__ + uint8_t isoc_ep_count; + #endif + + spinlock_t epqh_list_lock; + spinlock_t epqh_list_all_lock; + + struct timer_list host_probe_timer; + struct timer_list autoprobe_timer; + + unsigned power_status; + int probe_sec; + int autoprobe_sec; + #ifdef __DYN_SOF_INTR__ + uint32_t dyn_sof_count; + #define DYN_SOF_COUNT_DEF 40000 + #endif + struct tasklet_struct tasklet_select_eps; /*!< Tasket to do a reset */ + struct tasklet_struct tasklet_free_epqh_list ; /*!< Tasket to do a reset */ + unsigned disconnecting : 1 ; + + uint8_t pkt_count_limit_bo; + uint8_t pkt_count_limit_bi; +} ifxhcd_hcd_t; + +/* Gets the ifxhcd_hcd from a struct usb_hcd */ +static inline ifxhcd_hcd_t *syshcd_to_ifxhcd(struct usb_hcd *syshcd) +{ + return (ifxhcd_hcd_t *)(syshcd->hcd_priv[0]); +} + +/* Gets the struct usb_hcd that contains a ifxhcd_hcd_t. */ +static inline struct usb_hcd *ifxhcd_to_syshcd(ifxhcd_hcd_t *ifxhcd) +{ + return (struct usb_hcd *)(ifxhcd->syshcd); +} + + +extern ifxhcd_epqh_t * sysep_to_epqh(ifxhcd_hcd_t *_ifxhcd, struct usb_host_endpoint *_sysep); + +/* HCD Create/Destroy Functions */ + extern int ifxhcd_init (ifxhcd_hcd_t *_ifxhcd); + extern void ifxhcd_remove(ifxhcd_hcd_t *_ifxhcd); + +/*Linux HC Driver API Functions */ + +extern int ifxhcd_start(struct usb_hcd *hcd); +extern void ifxhcd_stop (struct usb_hcd *hcd); +extern int ifxhcd_get_frame_number(struct usb_hcd *hcd); + + +/*! + \brief This function does the setup for a data transfer for a host channel and + starts the transfer. May be called in either Slave mode or DMA mode. In + Slave mode, the caller must ensure that there is sufficient space in the + request queue and Tx Data FIFO. + + For an OUT transfer in Slave mode, it loads a data packet into the + appropriate FIFO. If necessary, additional data packets will be loaded in + the Host ISR. + + For an IN transfer in Slave mode, a data packet is requested. The data + packets are unloaded from the Rx FIFO in the Host ISR. If necessary, + additional data packets are requested in the Host ISR. + + For a PING transfer in Slave mode, the Do Ping bit is set in the HCTSIZ + register along with a packet count of 1 and the channel is enabled. This + causes a single PING transaction to occur. Other fields in HCTSIZ are + simply set to 0 since no data transfer occurs in this case. + + For a PING transfer in DMA mode, the HCTSIZ register is initialized with + all the information required to perform the subsequent data transfer. In + addition, the Do Ping bit is set in the HCTSIZ register. In this case, the + controller performs the entire PING protocol, then starts the data + transfer. + + @param _ifxhc Information needed to initialize the host channel. The xfer_len + value may be reduced to accommodate the max widths of the XferSize and + PktCnt fields in the HCTSIZn register. The multi_count value may be changed + to reflect the final xfer_len value. + */ +extern void ifxhcd_hc_start(ifxhcd_hcd_t *_ifxhcd, ifxhcd_hc_t *_ifxhc); + +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,32) +extern int ifxhcd_urb_enqueue(struct usb_hcd *_syshcd, struct usb_host_endpoint *_sysep, struct urb *_urb, gfp_t mem_flags); +extern int ifxhcd_urb_dequeue(struct usb_hcd *_syshcd, struct urb *_urb); +#else +extern int ifxhcd_urb_enqueue(struct usb_hcd *_syshcd, struct urb *_urb, gfp_t mem_flags); +extern int ifxhcd_urb_dequeue(struct usb_hcd *_syshcd, struct urb *_urb, int status); +#endif +extern irqreturn_t ifxhcd_irq(struct usb_hcd *_syshcd); + +extern void ifxhcd_endpoint_disable(struct usb_hcd *_syshcd, struct usb_host_endpoint *_sysep); + +extern int ifxhcd_hub_status_data(struct usb_hcd *_syshcd, char *_buf); +extern int ifxhcd_hub_control( struct usb_hcd *_syshcd, + u16 _typeReq, + u16 _wValue, + u16 _wIndex, + char *_buf, + u16 _wLength); + +/*@}*/ + +/*! \brief Transaction Execution Functions */ +/*@{*/ +extern void ifxhcd_complete_urb (ifxhcd_hcd_t *_ifxhcd, ifxhcd_urbd_t *_urbd, int _status); + +/*! + \brief Clears the transfer state for a host channel. This function is normally + called after a transfer is done and the host channel is being released. + */ +extern void ifxhcd_hc_cleanup(ifxusb_core_if_t *_core_if, ifxhcd_hc_t *_ifxhc); + +/*! + \brief Attempts to halt a host channel. This function should only be called in + Slave mode or to abort a transfer in either Slave mode or DMA mode. Under + normal circumstances in DMA mode, the controller halts the channel when the + transfer is complete or a condition occurs that requires application + intervention. + + In DMA mode, always sets the Channel Enable and Channel Disable bits of the + HCCHARn register. The controller ensures there is space in the request + queue before submitting the halt request. + + Some time may elapse before the core flushes any posted requests for this + host channel and halts. The Channel Halted interrupt handler completes the + deactivation of the host channel. + */ +extern int ifxhcd_hc_halt(ifxusb_core_if_t *_core_if, + ifxhcd_hc_t *_ifxhc, + ifxhcd_halt_status_e _halt_status); + +/*! + \brief Prepares a host channel for transferring packets to/from a specific + endpoint. The HCCHARn register is set up with the characteristics specified + in _ifxhc. Host channel interrupts that may need to be serviced while this + transfer is in progress are enabled. + */ +extern void ifxhcd_hc_init(ifxusb_core_if_t *_core_if, ifxhcd_hc_t *_ifxhc); + +/*! + \brief This function is called to handle the disconnection of host port. + */ +int32_t ifxhcd_disconnect(ifxhcd_hcd_t *_ifxhcd); +/*@}*/ + +/*! \brief Interrupt Handler Functions */ +/*@{*/ +extern irqreturn_t ifxhcd_oc_irq(int _irq, void *_dev); + +extern int32_t ifxhcd_handle_oc_intr(ifxhcd_hcd_t *_ifxhcd); +extern int32_t ifxhcd_handle_intr (ifxhcd_hcd_t *_ifxhcd); +/*@}*/ + + +/*! \brief Schedule Queue Functions */ +/*@{*/ +extern void ifxhcd_epqh_free (ifxhcd_epqh_t *_epqh); +extern void select_eps (ifxhcd_hcd_t *_ifxhcd); +extern void ifxhcd_epqh_idle(ifxhcd_epqh_t *_epqh); +extern void ifxhcd_epqh_idle_periodic(ifxhcd_epqh_t *_epqh); +extern ifxhcd_epqh_t *ifxhcd_urbd_create (ifxhcd_hcd_t *_ifxhcd,struct urb *_urb); +/*@}*/ + +/*! \brief Gets the usb_host_endpoint associated with an URB. */ +static inline struct usb_host_endpoint *ifxhcd_urb_to_endpoint(struct urb *_urb) +{ + struct usb_device *dev = _urb->dev; + int ep_num = usb_pipeendpoint(_urb->pipe); + + return (usb_pipein(_urb->pipe))?(dev->ep_in[ep_num]):(dev->ep_out[ep_num]); +} + +/*! + * \brief Gets the endpoint number from a _bEndpointAddress argument. The endpoint is + * qualified with its direction (possible 32 endpoints per device). + */ +#define ifxhcd_ep_addr_to_endpoint(_bEndpointAddress_) ((_bEndpointAddress_ & USB_ENDPOINT_NUMBER_MASK) | \ + ((_bEndpointAddress_ & USB_DIR_IN) != 0) << 4) + + + +/*! Internal debug function */ +void ifxhcd_dump_state(ifxhcd_hcd_t *_ifxhcd); + +/*@}*//*IFXUSB_HCD*/ + +extern struct usb_device *usb_alloc_dev (struct usb_device *parent, struct usb_bus *, unsigned port); +extern int usb_add_hcd (struct usb_hcd *syshcd, unsigned int irqnum, unsigned long irqflags); +extern void usb_remove_hcd (struct usb_hcd *syshcd); +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,32) +extern struct usb_hcd *usb_create_hcd (const struct hc_driver *driver, struct device *dev, char *bus_name); +#else +extern struct usb_hcd *usb_create_hcd (const struct hc_driver *driver, struct device *dev, const char *bus_name); +#endif + +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,32) +extern void usb_hcd_giveback_urb (struct usb_hcd *syshcd, struct urb *urb); +#else +extern void usb_hcd_giveback_urb (struct usb_hcd *syshcd, struct urb *urb,int status); +#endif + +extern void usb_put_hcd (struct usb_hcd *syshcd); +extern long usb_calc_bus_time (int speed, int is_input, int isoc, int bytecount); +extern char *syserr(int errno); + + + +static inline void INIT_EPQH_LIST_ALL(ifxhcd_hcd_t *_ifxhcd) +{ + spin_lock_init(&_ifxhcd->epqh_list_all_lock); +} +static inline void LOCK_EPQH_LIST_ALL(ifxhcd_hcd_t *_ifxhcd) +{ + spin_lock(&_ifxhcd->epqh_list_all_lock); +} +static inline void UNLOCK_EPQH_LIST_ALL(ifxhcd_hcd_t *_ifxhcd) +{ + spin_unlock(&_ifxhcd->epqh_list_all_lock); +} + +static inline void INIT_EPQH_LIST(ifxhcd_hcd_t *_ifxhcd) +{ + spin_lock_init(&_ifxhcd->epqh_list_lock); +} +static inline void LOCK_EPQH_LIST(ifxhcd_hcd_t *_ifxhcd) +{ + spin_lock(&_ifxhcd->epqh_list_lock); +} +static inline void UNLOCK_EPQH_LIST(ifxhcd_hcd_t *_ifxhcd) +{ + spin_unlock(&_ifxhcd->epqh_list_lock); +} + +static inline void INIT_URBD_LIST(ifxhcd_epqh_t *_epqh) +{ + spin_lock_init(&_epqh->urbd_list_lock); +} +static inline void LOCK_URBD_LIST(ifxhcd_epqh_t *_epqh) +{ + spin_lock(&_epqh->urbd_list_lock); +} +static inline void UNLOCK_URBD_LIST(ifxhcd_epqh_t *_epqh) +{ + spin_unlock(&_epqh->urbd_list_lock); +} + +#endif // __IFXHCD_H__ + |