/* $FreeBSD$ */ /*- * Copyright (c) 2008 Hans Petter Selasky. All rights reserved. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. */ /* * Including this file is mandatory for all USB related c-files in the * kernel. */ #ifndef _USB2_CORE_H_ #define _USB2_CORE_H_ /* Default USB configuration */ #ifndef USB_USE_CONDVAR #define USB_USE_CONDVAR 0 #endif #ifndef USB_TD_GET_PROC #define USB_TD_GET_PROC(td) (td)->td_proc #endif #ifndef USB_PROC_GET_GID #define USB_PROC_GET_GID(td) (td)->p_pgid #endif #ifndef USB_VNOPS_FO_CLOSE #define USB_VNOPS_FO_CLOSE(fp, td, perr) do { \ (td)->td_fpop = (fp); \ *(perr) = vnops.fo_close(fp, td); \ (td)->td_fpop = NULL; \ } while (0) #endif #ifndef USB_VNOPS_FO_STAT #define USB_VNOPS_FO_STAT(fp, sb, cred, td) \ vnops.fo_stat(fp, sb, cred, td) #endif #ifndef USB_VNOPS_FO_TRUNCATE #define USB_VNOPS_FO_TRUNCATE(fp, length, cred, td) \ vnops.fo_truncate(fp, length, cred, td) #endif /* Include files */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "usb_if.h" #include "opt_usb.h" #include "opt_bus.h" #define USB_STACK_VERSION 2000 /* 2.0 */ #define USB_HOST_ALIGN 8 /* bytes, must be power of two */ #define USB_ISOC_TIME_MAX 128 /* ms */ #define USB_FS_ISOC_UFRAME_MAX 4 /* exclusive unit */ #if (USB_FS_ISOC_UFRAME_MAX > 6) #error "USB_FS_ISOC_UFRAME_MAX cannot be set higher than 6" #endif #define USB_MAX_FS_ISOC_FRAMES_PER_XFER (120) /* units */ #define USB_MAX_HS_ISOC_FRAMES_PER_XFER (8*120) /* units */ #define USB_MAX_IPACKET 8 /* maximum size of the initial USB * data packet */ #ifndef USB_VERBOSE #define USB_VERBOSE 1 #endif #define USB_HUB_MAX_DEPTH 5 /* USB transfer states */ #define USB_ST_SETUP 0 #define USB_ST_TRANSFERRED 1 #define USB_ST_ERROR 2 /* * The following macro will return the current state of an USB * transfer like defined by the "USB_ST_XXX" enums. */ #define USB_GET_STATE(xfer) ((xfer)->usb2_state) /* * The following macro will tell if an USB transfer is currently * receiving or transferring data. */ #define USB_GET_DATA_ISREAD(xfer) (((xfer)->flags_int.usb2_mode == \ USB_MODE_DEVICE) ? ((xfer->endpoint & UE_DIR_IN) ? 0 : 1) : \ ((xfer->endpoint & UE_DIR_IN) ? 1 : 0)) /* * The following macros are used used to convert milliseconds into * HZ. We use 1024 instead of 1000 milliseconds per second to save a * full division. */ #define USB_MS_HZ 1024 #define USB_MS_TO_TICKS(ms) \ (((uint32_t)((((uint32_t)(ms)) * ((uint32_t)(hz))) + USB_MS_HZ - 1)) / USB_MS_HZ) /* macros */ #define usb2_callout_init_mtx(c,m,f) callout_init_mtx(&(c)->co,m,f) #define usb2_callout_reset(c,t,f,d) callout_reset(&(c)->co,t,f,d) #define usb2_callout_stop(c) callout_stop(&(c)->co) #define usb2_callout_drain(c) callout_drain(&(c)->co) #define usb2_callout_pending(c) callout_pending(&(c)->co) #define USB_BUS_LOCK(_b) mtx_lock(&(_b)->bus_mtx) #define USB_BUS_UNLOCK(_b) mtx_unlock(&(_b)->bus_mtx) #define USB_BUS_LOCK_ASSERT(_b, _t) mtx_assert(&(_b)->bus_mtx, _t) #define USB_XFER_LOCK(_x) mtx_lock((_x)->xroot->xfer_mtx) #define USB_XFER_UNLOCK(_x) mtx_unlock((_x)->xroot->xfer_mtx) #define USB_XFER_LOCK_ASSERT(_x, _t) mtx_assert((_x)->xroot->xfer_mtx, _t) /* structure prototypes */ struct file; struct usb2_bus; struct usb2_device; struct usb2_page; struct usb2_page_cache; struct usb2_xfer; struct usb2_xfer_root; /* typedefs */ typedef uint8_t usb2_error_t; typedef void (usb2_callback_t)(struct usb2_xfer *); /* structures */ /* * Common queue structure for USB transfers. */ struct usb2_xfer_queue { TAILQ_HEAD(, usb2_xfer) head; struct usb2_xfer *curr; /* current USB transfer processed */ void (*command) (struct usb2_xfer_queue *pq); uint8_t recurse_1:1; uint8_t recurse_2:1; }; /* * The following is a wrapper for the callout structure to ease * porting the code to other platforms. */ struct usb2_callout { struct callout co; }; /* * The following structure defines a set of USB transfer flags. */ struct usb2_xfer_flags { uint8_t force_short_xfer:1; /* force a short transmit transfer * last */ uint8_t short_xfer_ok:1; /* allow short receive transfers */ uint8_t short_frames_ok:1; /* allow short frames */ uint8_t pipe_bof:1; /* block pipe on failure */ uint8_t proxy_buffer:1; /* makes buffer size a factor of * "max_frame_size" */ uint8_t ext_buffer:1; /* uses external DMA buffer */ uint8_t manual_status:1; /* non automatic status stage on * control transfers */ uint8_t no_pipe_ok:1; /* set if "USB_ERR_NO_PIPE" error can * be ignored */ uint8_t stall_pipe:1; /* set if the endpoint belonging to * this USB transfer should be stalled * before starting this transfer! */ }; /* * The following structure defines a set of internal USB transfer * flags. */ struct usb2_xfer_flags_int { uint16_t control_rem; /* remainder in bytes */ uint8_t open:1; /* set if USB pipe has been opened */ uint8_t transferring:1; /* set if an USB transfer is in * progress */ uint8_t did_dma_delay:1; /* set if we waited for HW DMA */ uint8_t did_close:1; /* set if we closed the USB transfer */ uint8_t draining:1; /* set if we are draining an USB * transfer */ uint8_t started:1; /* keeps track of started or stopped */ uint8_t bandwidth_reclaimed:1; uint8_t control_xfr:1; /* set if control transfer */ uint8_t control_hdr:1; /* set if control header should be * sent */ uint8_t control_act:1; /* set if control transfer is active */ uint8_t short_frames_ok:1; /* filtered version */ uint8_t short_xfer_ok:1; /* filtered version */ uint8_t bdma_enable:1; /* filtered version (only set if * hardware supports DMA) */ uint8_t bdma_no_post_sync:1; /* set if the USB callback wrapper * should not do the BUS-DMA post sync * operation */ uint8_t bdma_setup:1; /* set if BUS-DMA has been setup */ uint8_t isochronous_xfr:1; /* set if isochronous transfer */ uint8_t usb2_mode:1; /* shadow copy of "udev->usb2_mode" */ uint8_t curr_dma_set:1; /* used by USB HC/DC driver */ uint8_t can_cancel_immed:1; /* set if USB transfer can be * cancelled immediately */ }; /* * The following structure defines the symmetric part of an USB config * structure. */ struct usb2_config_sub { usb2_callback_t *callback; /* USB transfer callback */ uint32_t bufsize; /* total pipe buffer size in bytes */ uint32_t frames; /* maximum number of USB frames */ uint16_t interval; /* interval in milliseconds */ #define USB_DEFAULT_INTERVAL 0 uint16_t timeout; /* transfer timeout in milliseconds */ struct usb2_xfer_flags flags; /* transfer flags */ }; /* * The following structure define an USB configuration, that basically * is used when setting up an USB transfer. */ struct usb2_config { struct usb2_config_sub mh; /* parameters for USB_MODE_HOST */ struct usb2_config_sub md; /* parameters for USB_MODE_DEVICE */ uint8_t type; /* pipe type */ uint8_t endpoint; /* pipe number */ uint8_t direction; /* pipe direction */ uint8_t ep_index; /* pipe index match to use */ uint8_t if_index; /* "ifaces" index to use */ }; /* * The following structure defines an USB transfer. */ struct usb2_xfer { struct usb2_callout timeout_handle; TAILQ_ENTRY(usb2_xfer) wait_entry; /* used at various places */ struct usb2_page_cache *buf_fixup; /* fixup buffer(s) */ struct usb2_xfer_queue *wait_queue; /* pointer to queue that we * are waiting on */ struct usb2_page *dma_page_ptr; struct usb2_pipe *pipe; /* our USB pipe */ struct usb2_xfer_root *xroot; /* used by HC driver */ void *qh_start[2]; /* used by HC driver */ void *td_start[2]; /* used by HC driver */ void *td_transfer_first; /* used by HC driver */ void *td_transfer_last; /* used by HC driver */ void *td_transfer_cache; /* used by HC driver */ void *priv_sc; /* device driver data pointer 1 */ void *priv_fifo; /* device driver data pointer 2 */ void *local_buffer; uint32_t *frlengths; struct usb2_page_cache *frbuffers; usb2_callback_t *callback; uint32_t max_usb2_frame_size; uint32_t max_data_length; uint32_t sumlen; /* sum of all lengths in bytes */ uint32_t actlen; /* actual length in bytes */ uint32_t timeout; /* milliseconds */ #define USB_NO_TIMEOUT 0 #define USB_DEFAULT_TIMEOUT 5000 /* 5000 ms = 5 seconds */ uint32_t max_frame_count; /* initial value of "nframes" after * setup */ uint32_t nframes; /* number of USB frames to transfer */ uint32_t aframes; /* actual number of USB frames * transferred */ uint16_t max_packet_size; uint16_t max_frame_size; uint16_t qh_pos; uint16_t isoc_time_complete; /* in ms */ uint16_t interval; /* milliseconds */ uint8_t address; /* physical USB address */ uint8_t endpoint; /* physical USB endpoint */ uint8_t max_packet_count; uint8_t usb2_smask; uint8_t usb2_cmask; uint8_t usb2_uframe; uint8_t usb2_state; usb2_error_t error; struct usb2_xfer_flags flags; struct usb2_xfer_flags_int flags_int; }; /* * The following structure keeps information that is used to match * against an array of "usb2_device_id" elements. */ struct usb2_lookup_info { uint16_t idVendor; uint16_t idProduct; uint16_t bcdDevice; uint8_t bDeviceClass; uint8_t bDeviceSubClass; uint8_t bDeviceProtocol; uint8_t bInterfaceClass; uint8_t bInterfaceSubClass; uint8_t bInterfaceProtocol; uint8_t bIfaceIndex; uint8_t bIfaceNum; uint8_t bConfigIndex; uint8_t bConfigNum; }; /* Structure used by probe and attach */ struct usb2_attach_arg { struct usb2_lookup_info info; device_t temp_dev; /* for internal use */ const void *driver_info; /* for internal use */ struct usb2_device *device; /* current device */ struct usb2_interface *iface; /* current interface */ uint8_t usb2_mode; /* see USB_MODE_XXX */ uint8_t port; uint8_t use_generic; /* hint for generic drivers */ }; /* external variables */ MALLOC_DECLARE(M_USB); MALLOC_DECLARE(M_USBDEV); MALLOC_DECLARE(M_USBHC); extern struct mtx usb2_ref_lock; /* typedefs */ typedef struct malloc_type *usb2_malloc_type; /* prototypes */ const char *usb2_errstr(usb2_error_t error); struct usb2_config_descriptor *usb2_get_config_descriptor( struct usb2_device *udev); struct usb2_device_descriptor *usb2_get_device_descriptor( struct usb2_device *udev); struct usb2_interface *usb2_get_iface(struct usb2_device *udev, uint8_t iface_index); struct usb2_interface_descriptor *usb2_get_interface_descriptor( struct usb2_interface *iface); uint8_t usb2_clear_stall_callback(struct usb2_xfer *xfer1, struct usb2_xfer *xfer2); uint8_t usb2_get_interface_altindex(struct usb2_interface *iface); usb2_error_t usb2_set_alt_interface_index(struct usb2_device *udev, uint8_t iface_index, uint8_t alt_index); uint8_t usb2_get_mode(struct usb2_device *udev); uint8_t usb2_get_speed(struct usb2_device *udev); uint32_t usb2_get_isoc_fps(struct usb2_device *udev); usb2_error_t usb2_transfer_setup(struct usb2_device *udev, const uint8_t *ifaces, struct usb2_xfer **pxfer, const struct usb2_config *setup_start, uint16_t n_setup, void *priv_sc, struct mtx *priv_mtx); void usb2_set_frame_data(struct usb2_xfer *xfer, void *ptr, uint32_t frindex); void usb2_set_frame_offset(struct usb2_xfer *xfer, uint32_t offset, uint32_t frindex); void usb2_start_hardware(struct usb2_xfer *xfer); void usb2_transfer_clear_stall(struct usb2_xfer *xfer); void usb2_transfer_drain(struct usb2_xfer *xfer); void usb2_transfer_set_stall(struct usb2_xfer *xfer); uint8_t usb2_transfer_pending(struct usb2_xfer *xfer); void usb2_transfer_start(struct usb2_xfer *xfer); void usb2_transfer_stop(struct usb2_xfer *xfer); void usb2_transfer_unsetup(struct usb2_xfer **pxfer, uint16_t n_setup); void usb2_set_parent_iface(struct usb2_device *udev, uint8_t iface_index, uint8_t parent_index); uint8_t usb2_get_bus_index(struct usb2_device *udev); uint8_t usb2_get_device_index(struct usb2_device *udev); void usb2_set_power_mode(struct usb2_device *udev, uint8_t power_mode); #endif /* _USB2_CORE_H_ */