/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. * Copyright 2017 Joyent, Inc. */ /* * Human Interface Device driver (HID) * * The HID driver is a software driver which acts as a class * driver for USB human input devices like keyboard, mouse, * joystick etc and provides the class-specific interfaces * between these client driver modules and the Universal Serial * Bus Driver(USBA). * * NOTE: This driver is not DDI compliant in that it uses undocumented * functions for logging (USB_DPRINTF_L*, usb_alloc_log_hdl, usb_free_log_hdl). * * Undocumented functions may go away in a future Solaris OS release. * * Please see the DDK for sample code of these functions, and for the usbskel * skeleton template driver which contains scaled-down versions of these * functions written in a DDI-compliant way. */ #define USBDRV_MAJOR_VER 2 #define USBDRV_MINOR_VER 0 #include #include #include #include #include #include #include #include #include #include #include #include extern int ddi_create_internal_pathname(dev_info_t *, char *, int, minor_t); /* Debugging support */ uint_t hid_errmask = (uint_t)PRINT_MASK_ALL; uint_t hid_errlevel = USB_LOG_L4; uint_t hid_instance_debug = (uint_t)-1; /* tunables */ int hid_default_pipe_drain_timeout = HID_DEFAULT_PIPE_DRAIN_TIMEOUT; int hid_pm_mouse = 1; /* enable remote_wakeup for USB mouse/keyboard */ /* soft state structures */ #define HID_INITIAL_SOFT_SPACE 4 static void *hid_statep; /* Callbacks */ static void hid_interrupt_pipe_callback(usb_pipe_handle_t, usb_intr_req_t *); static void hid_default_pipe_callback(usb_pipe_handle_t, usb_ctrl_req_t *); static void hid_interrupt_pipe_exception_callback(usb_pipe_handle_t, usb_intr_req_t *); static void hid_default_pipe_exception_callback(usb_pipe_handle_t, usb_ctrl_req_t *); static int hid_restore_state_event_callback(dev_info_t *); static int hid_disconnect_event_callback(dev_info_t *); static int hid_cpr_suspend(hid_state_t *hidp); static void hid_cpr_resume(hid_state_t *hidp); static void hid_power_change_callback(void *arg, int rval); /* Supporting routines */ static size_t hid_parse_hid_descr(usb_hid_descr_t *, size_t, usb_alt_if_data_t *, usb_ep_data_t *); static int hid_parse_hid_descr_failure(hid_state_t *); static int hid_handle_report_descriptor(hid_state_t *, int); static void hid_set_idle(hid_state_t *); static void hid_set_protocol(hid_state_t *, int); static void hid_detach_cleanup(dev_info_t *, hid_state_t *); static int hid_start_intr_polling(hid_state_t *); static void hid_close_intr_pipe(hid_state_t *); static int hid_mctl_execute_cmd(queue_t *, int, hid_req_t *, mblk_t *); static int hid_mctl_receive(queue_t *, mblk_t *); static int hid_send_async_ctrl_request(hid_default_pipe_arg_t *, hid_req_t *, uchar_t, int, ushort_t); static void hid_create_pm_components(dev_info_t *, hid_state_t *); static int hid_is_pm_enabled(dev_info_t *); static void hid_restore_device_state(dev_info_t *, hid_state_t *); static void hid_save_device_state(hid_state_t *); static void hid_qreply_merror(queue_t *, mblk_t *, uchar_t); static mblk_t *hid_data2mblk(uchar_t *, int); static void hid_flush(queue_t *); static int hid_pwrlvl0(hid_state_t *); static int hid_pwrlvl1(hid_state_t *); static int hid_pwrlvl2(hid_state_t *); static int hid_pwrlvl3(hid_state_t *); static void hid_pm_busy_component(hid_state_t *); static void hid_pm_idle_component(hid_state_t *); static int hid_polled_read(hid_polled_handle_t, uchar_t **); static int hid_polled_input_enter(hid_polled_handle_t); static int hid_polled_input_exit(hid_polled_handle_t); static int hid_polled_input_init(hid_state_t *); static int hid_polled_input_fini(hid_state_t *); /* Streams entry points */ static int hid_open(queue_t *, dev_t *, int, int, cred_t *); static int hid_close(queue_t *, int, cred_t *); static int hid_wput(queue_t *, mblk_t *); static int hid_wsrv(queue_t *); /* dev_ops entry points */ static int hid_info(dev_info_t *, ddi_info_cmd_t, void *, void **); static int hid_attach(dev_info_t *, ddi_attach_cmd_t); static int hid_detach(dev_info_t *, ddi_detach_cmd_t); static int hid_power(dev_info_t *, int, int); /* These are to enable ugen support: */ static int hid_chropen(dev_t *, int, int, cred_t *); static int hid_chrclose(dev_t, int, int, cred_t *); static int hid_read(dev_t, struct uio *, cred_t *); static int hid_write(dev_t, struct uio *, cred_t *); static int hid_poll(dev_t, short, int, short *, struct pollhead **); /* * Warlock is not aware of the automatic locking mechanisms for * streams drivers. The hid streams enter points are protected by * a per module perimeter. If the locking in hid is a bottleneck * per queue pair or per queue locking may be used. Since warlock * is not aware of the streams perimeters, these notes have been added. * * Note that the perimeters do not protect the driver from callbacks * happening while a streams entry point is executing. So, the hid_mutex * has been created to protect the data. */ _NOTE(SCHEME_PROTECTS_DATA("unique per call", iocblk)) _NOTE(SCHEME_PROTECTS_DATA("unique per call", datab)) _NOTE(SCHEME_PROTECTS_DATA("unique per call", msgb)) _NOTE(SCHEME_PROTECTS_DATA("unique per call", queue)) _NOTE(SCHEME_PROTECTS_DATA("unique per call", usb_ctrl_req)) _NOTE(SCHEME_PROTECTS_DATA("unique per call", usb_intr_req)) /* module information */ static struct module_info hid_mod_info = { 0x0ffff, /* module id number */ "hid", /* module name */ 0, /* min packet size accepted */ INFPSZ, /* max packet size accepted */ 512, /* hi-water mark */ 128 /* lo-water mark */ }; /* read queue information structure */ static struct qinit rinit = { NULL, /* put procedure not needed */ NULL, /* service procedure not needed */ hid_open, /* called on startup */ hid_close, /* called on finish */ NULL, /* for future use */ &hid_mod_info, /* module information structure */ NULL /* module statistics structure */ }; /* write queue information structure */ static struct qinit winit = { hid_wput, /* put procedure */ hid_wsrv, /* service procedure */ NULL, /* open not used on write side */ NULL, /* close not used on write side */ NULL, /* for future use */ &hid_mod_info, /* module information structure */ NULL /* module statistics structure */ }; struct streamtab hid_streamtab = { &rinit, &winit, NULL, /* not a MUX */ NULL /* not a MUX */ }; struct cb_ops hid_cb_ops = { hid_chropen, /* open */ hid_chrclose, /* close */ nulldev, /* strategy */ nulldev, /* print */ nulldev, /* dump */ hid_read, /* read */ hid_write, /* write */ nulldev, /* ioctl */ nulldev, /* devmap */ nulldev, /* mmap */ nulldev, /* segmap */ hid_poll, /* poll */ ddi_prop_op, /* cb_prop_op */ &hid_streamtab, /* streamtab */ D_MP | D_MTPERQ }; static struct dev_ops hid_ops = { DEVO_REV, /* devo_rev, */ 0, /* refcnt */ hid_info, /* info */ nulldev, /* identify */ nulldev, /* probe */ hid_attach, /* attach */ hid_detach, /* detach */ nodev, /* reset */ &hid_cb_ops, /* driver operations */ NULL, /* bus operations */ hid_power, /* power */ ddi_quiesce_not_needed, /* quiesce */ }; static struct modldrv hidmodldrv = { &mod_driverops, "USB HID Client Driver", &hid_ops /* driver ops */ }; static struct modlinkage modlinkage = { MODREV_1, &hidmodldrv, NULL, }; static usb_event_t hid_events = { hid_disconnect_event_callback, hid_restore_state_event_callback, NULL, NULL, }; int _init(void) { int rval; if (((rval = ddi_soft_state_init(&hid_statep, sizeof (hid_state_t), HID_INITIAL_SOFT_SPACE)) != 0)) { return (rval); } if ((rval = mod_install(&modlinkage)) != 0) { ddi_soft_state_fini(&hid_statep); } return (rval); } int _fini(void) { int rval; if ((rval = mod_remove(&modlinkage)) != 0) { return (rval); } ddi_soft_state_fini(&hid_statep); return (rval); } int _info(struct modinfo *modinfop) { return (mod_info(&modlinkage, modinfop)); } /* * hid_info : * Get minor number, soft state structure etc. */ /*ARGSUSED*/ static int hid_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) { hid_state_t *hidp = NULL; int error = DDI_FAILURE; minor_t minor = getminor((dev_t)arg); int instance = HID_MINOR_TO_INSTANCE(minor); switch (infocmd) { case DDI_INFO_DEVT2DEVINFO: if ((hidp = ddi_get_soft_state(hid_statep, instance)) != NULL) { *result = hidp->hid_dip; if (*result != NULL) { error = DDI_SUCCESS; } } else *result = NULL; break; case DDI_INFO_DEVT2INSTANCE: *result = (void *)(uintptr_t)instance; error = DDI_SUCCESS; break; default: break; } return (error); } /* * hid_attach : * Gets called at the time of attach. Do allocation, * and initialization of the software structure. * Get all the descriptors, setup the * report descriptor tree by calling hidparser * function. */ static int hid_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) { int instance = ddi_get_instance(dip); int parse_hid_descr_error = 0; hid_state_t *hidp = NULL; uint32_t usage_page; uint32_t usage; usb_client_dev_data_t *dev_data; usb_alt_if_data_t *altif_data; char minor_name[HID_MINOR_NAME_LEN]; usb_ep_data_t *ep_data; usb_ugen_info_t usb_ugen_info; switch (cmd) { case DDI_ATTACH: break; case DDI_RESUME: hidp = ddi_get_soft_state(hid_statep, instance); hid_cpr_resume(hidp); return (DDI_SUCCESS); default: return (DDI_FAILURE); } /* * Allocate softstate information and get softstate pointer */ if (ddi_soft_state_zalloc(hid_statep, instance) == DDI_SUCCESS) { hidp = ddi_get_soft_state(hid_statep, instance); } if (hidp == NULL) { goto fail; } hidp->hid_log_handle = usb_alloc_log_hdl(dip, NULL, &hid_errlevel, &hid_errmask, &hid_instance_debug, 0); hidp->hid_instance = instance; hidp->hid_dip = dip; /* * Register with USBA. Just retrieve interface descriptor */ if (usb_client_attach(dip, USBDRV_VERSION, 0) != USB_SUCCESS) { USB_DPRINTF_L2(PRINT_MASK_ATTA, hidp->hid_log_handle, "hid_attach: client attach failed"); goto fail; } if (usb_get_dev_data(dip, &dev_data, USB_PARSE_LVL_IF, 0) != USB_SUCCESS) { USB_DPRINTF_L2(PRINT_MASK_ATTA, hidp->hid_log_handle, "hid_attach: usb_get_dev_data() failed"); goto fail; } /* initialize mutex */ mutex_init(&hidp->hid_mutex, NULL, MUTEX_DRIVER, dev_data->dev_iblock_cookie); hidp->hid_attach_flags |= HID_LOCK_INIT; /* get interface data for alternate 0 */ altif_data = &dev_data->dev_curr_cfg-> cfg_if[dev_data->dev_curr_if].if_alt[0]; mutex_enter(&hidp->hid_mutex); hidp->hid_dev_data = dev_data; hidp->hid_dev_descr = dev_data->dev_descr; hidp->hid_interfaceno = dev_data->dev_curr_if; hidp->hid_if_descr = altif_data->altif_descr; /* * Make sure that the bInterfaceProtocol only has meaning to * Boot Interface Subclass. */ if (hidp->hid_if_descr.bInterfaceSubClass != BOOT_INTERFACE) hidp->hid_if_descr.bInterfaceProtocol = NONE_PROTOCOL; mutex_exit(&hidp->hid_mutex); if ((ep_data = usb_lookup_ep_data(dip, dev_data, hidp->hid_interfaceno, 0, 0, (uint_t)USB_EP_ATTR_INTR, (uint_t)USB_EP_DIR_IN)) == NULL) { USB_DPRINTF_L2(PRINT_MASK_ATTA, hidp->hid_log_handle, "no interrupt IN endpoint found"); goto fail; } mutex_enter(&hidp->hid_mutex); if (usb_ep_xdescr_fill(USB_EP_XDESCR_CURRENT_VERSION, dip, ep_data, &hidp->hid_ep_intr_xdescr) != USB_SUCCESS) { mutex_exit(&hidp->hid_mutex); goto fail; } /* * Attempt to find the hid descriptor, it could be after interface * or after endpoint descriptors */ if (hid_parse_hid_descr(&hidp->hid_hid_descr, USB_HID_DESCR_SIZE, altif_data, ep_data) != USB_HID_DESCR_SIZE) { /* * If parsing of hid descriptor failed and * the device is a keyboard or mouse, use predefined * length and packet size. */ if (hid_parse_hid_descr_failure(hidp) == USB_FAILURE) { mutex_exit(&hidp->hid_mutex); goto fail; } /* * hid descriptor was bad but since * the device is a keyboard or mouse, * we will use the default length * and packet size. */ parse_hid_descr_error = HID_BAD_DESCR; } else { /* Parse hid descriptor successful */ USB_DPRINTF_L3(PRINT_MASK_ATTA, hidp->hid_log_handle, "Hid descriptor:\n\t" "bLength = 0x%x bDescriptorType = 0x%x " "bcdHID = 0x%x\n\t" "bCountryCode = 0x%x bNumDescriptors = 0x%x\n\t" "bReportDescriptorType = 0x%x\n\t" "wReportDescriptorLength = 0x%x", hidp->hid_hid_descr.bLength, hidp->hid_hid_descr.bDescriptorType, hidp->hid_hid_descr.bcdHID, hidp->hid_hid_descr.bCountryCode, hidp->hid_hid_descr.bNumDescriptors, hidp->hid_hid_descr.bReportDescriptorType, hidp->hid_hid_descr.wReportDescriptorLength); } /* * Save a copy of the default pipe for easy reference */ hidp->hid_default_pipe = hidp->hid_dev_data->dev_default_ph; /* we copied the descriptors we need, free the dev_data */ usb_free_dev_data(dip, dev_data); hidp->hid_dev_data = NULL; if (usb_owns_device(dip)) { /* Get a ugen handle. */ bzero(&usb_ugen_info, sizeof (usb_ugen_info)); usb_ugen_info.usb_ugen_flags = 0; usb_ugen_info.usb_ugen_minor_node_ugen_bits_mask = (dev_t)HID_MINOR_UGEN_BITS_MASK; usb_ugen_info.usb_ugen_minor_node_instance_mask = (dev_t)HID_MINOR_INSTANCE_MASK; hidp->hid_ugen_hdl = usb_ugen_get_hdl(dip, &usb_ugen_info); if (usb_ugen_attach(hidp->hid_ugen_hdl, cmd) != USB_SUCCESS) { USB_DPRINTF_L2(PRINT_MASK_ATTA, hidp->hid_log_handle, "usb_ugen_attach failed"); usb_ugen_release_hdl(hidp->hid_ugen_hdl); hidp->hid_ugen_hdl = NULL; } } /* * Don't get the report descriptor if parsing hid descriptor earlier * failed since device probably won't return valid report descriptor * either. Though parsing of hid descriptor failed, we have reached * this point because the device has been identified as a * keyboard or a mouse successfully and the default packet * size and layout(in case of keyboard only) will be used, so it * is ok to go ahead even if parsing of hid descriptor failed and * we will not try to get the report descriptor. */ if (parse_hid_descr_error != HID_BAD_DESCR) { /* * Sun mouse rev 105 is a bit slow in responding to this * request and requires multiple retries */ int retry; /* * Get and parse the report descriptor. * Set the packet size if parsing is successful. * Note that we start retry at 1 to have a delay * in the first iteration. */ mutex_exit(&hidp->hid_mutex); for (retry = 1; retry < HID_RETRY; retry++) { if (hid_handle_report_descriptor(hidp, hidp->hid_interfaceno) == USB_SUCCESS) { break; } delay(retry * drv_usectohz(1000)); } if (retry >= HID_RETRY) { goto fail; } mutex_enter(&hidp->hid_mutex); /* * If packet size is zero, but the device is identified * as a mouse or a keyboard, use predefined packet * size. */ if (hidp->hid_packet_size == 0) { if (hidp->hid_if_descr.bInterfaceProtocol == KEYBOARD_PROTOCOL) { /* device is a keyboard */ hidp->hid_packet_size = USBKPSZ; } else if (hidp-> hid_if_descr.bInterfaceProtocol == MOUSE_PROTOCOL) { /* device is a mouse */ hidp->hid_packet_size = USBMSSZ; } else { USB_DPRINTF_L2(PRINT_MASK_ATTA, hidp->hid_log_handle, "Failed to find hid packet size"); mutex_exit(&hidp->hid_mutex); goto fail; } } } /* * initialize the pipe policy for the interrupt pipe. */ hidp->hid_intr_pipe_policy.pp_max_async_reqs = 1; /* * Make a clas specific request to SET_IDLE * In this case send no reports if state has not changed. * See HID 7.2.4. */ mutex_exit(&hidp->hid_mutex); hid_set_idle(hidp); /* always initialize to report protocol */ hid_set_protocol(hidp, SET_REPORT_PROTOCOL); mutex_enter(&hidp->hid_mutex); /* * Create minor node based on information from the * descriptors */ switch (hidp->hid_if_descr.bInterfaceProtocol) { case KEYBOARD_PROTOCOL: (void) strcpy(minor_name, "keyboard"); break; case MOUSE_PROTOCOL: (void) strcpy(minor_name, "mouse"); break; default: /* * If the report descriptor has the GD mouse collection in * its multiple collection, create a minor node and support it. * It is used on some advanced keyboard/mouse set. */ if (hidparser_lookup_usage_collection( hidp->hid_report_descr, HID_GENERIC_DESKTOP, HID_GD_MOUSE) != HIDPARSER_FAILURE) { (void) strcpy(minor_name, "mouse"); break; } if (hidparser_get_top_level_collection_usage( hidp->hid_report_descr, &usage_page, &usage) != HIDPARSER_FAILURE) { switch (usage_page) { case HID_CONSUMER: switch (usage) { case HID_CONSUMER_CONTROL: (void) strcpy(minor_name, "consumer_control"); break; default: (void) sprintf(minor_name, "hid_%d_%d", usage_page, usage); break; } break; case HID_GENERIC_DESKTOP: switch (usage) { case HID_GD_POINTER: (void) strcpy(minor_name, "pointer"); break; case HID_GD_MOUSE: (void) strcpy(minor_name, "mouse"); break; case HID_GD_KEYBOARD: (void) strcpy(minor_name, "keyboard"); break; default: (void) sprintf(minor_name, "hid_%d_%d", usage_page, usage); break; } break; default: (void) sprintf(minor_name, "hid_%d_%d", usage_page, usage); break; } } else { USB_DPRINTF_L1(PRINT_MASK_ATTA, hidp->hid_log_handle, "hid_attach: Unsupported HID device"); mutex_exit(&hidp->hid_mutex); goto fail; } break; } mutex_exit(&hidp->hid_mutex); if ((ddi_create_minor_node(dip, minor_name, S_IFCHR, HID_CONSTRUCT_EXTERNAL_MINOR(instance), DDI_PSEUDO, 0)) != DDI_SUCCESS) { USB_DPRINTF_L2(PRINT_MASK_ATTA, hidp->hid_log_handle, "hid_attach: Could not create minor node"); goto fail; } /* create internal path for virtual */ if (strcmp(minor_name, "mouse") == 0) { if (ddi_create_internal_pathname(dip, "internal_mouse", S_IFCHR, HID_CONSTRUCT_INTERNAL_MINOR(instance)) != DDI_SUCCESS) { goto fail; } } if (strcmp(minor_name, "keyboard") == 0) { if (ddi_create_internal_pathname(dip, "internal_keyboard", S_IFCHR, HID_CONSTRUCT_INTERNAL_MINOR(instance)) != DDI_SUCCESS) { goto fail; } } mutex_enter(&hidp->hid_mutex); hidp->hid_attach_flags |= HID_MINOR_NODES; hidp->hid_dev_state = USB_DEV_ONLINE; mutex_exit(&hidp->hid_mutex); /* register for all events */ if (usb_register_event_cbs(dip, &hid_events, 0) != USB_SUCCESS) { USB_DPRINTF_L2(PRINT_MASK_ATTA, hidp->hid_log_handle, "usb_register_event_cbs failed"); goto fail; } /* now create components to power manage this device */ hid_create_pm_components(dip, hidp); hid_pm_busy_component(hidp); (void) pm_raise_power(dip, 0, USB_DEV_OS_FULL_PWR); hid_pm_idle_component(hidp); hidp->hid_internal_rq = hidp->hid_external_rq = NULL; hidp->hid_internal_flag = hidp->hid_external_flag = 0; hidp->hid_inuse_rq = NULL; /* * report device */ ddi_report_dev(dip); USB_DPRINTF_L4(PRINT_MASK_ATTA, hidp->hid_log_handle, "hid_attach: End"); return (DDI_SUCCESS); fail: if (hidp) { USB_DPRINTF_L2(PRINT_MASK_ATTA, hidp->hid_log_handle, "hid_attach: fail"); hid_detach_cleanup(dip, hidp); } return (DDI_FAILURE); } /* * hid_detach : * Gets called at the time of detach. */ static int hid_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) { int instance = ddi_get_instance(dip); hid_state_t *hidp; int rval = DDI_FAILURE; hidp = ddi_get_soft_state(hid_statep, instance); USB_DPRINTF_L4(PRINT_MASK_ALL, hidp->hid_log_handle, "hid_detach"); switch (cmd) { case DDI_DETACH: /* * Undo what we did in client_attach, freeing resources * and removing things we installed. The system * framework guarantees we are not active with this devinfo * node in any other entry points at this time. */ hid_detach_cleanup(dip, hidp); return (DDI_SUCCESS); case DDI_SUSPEND: rval = hid_cpr_suspend(hidp); return (rval == USB_SUCCESS ? DDI_SUCCESS : DDI_FAILURE); default: break; } return (rval); } static int hid_chropen(dev_t *devp, int flag, int sflag, cred_t *credp) { int rval; minor_t minor = getminor(*devp); int instance; hid_state_t *hidp; instance = HID_MINOR_TO_INSTANCE(minor); hidp = ddi_get_soft_state(hid_statep, instance); if (hidp == NULL) { return (ENXIO); } if (!HID_IS_UGEN_OPEN(minor)) { return (ENXIO); } hid_pm_busy_component(hidp); (void) pm_raise_power(hidp->hid_dip, 0, USB_DEV_OS_FULL_PWR); mutex_enter(&hidp->hid_mutex); rval = usb_ugen_open(hidp->hid_ugen_hdl, devp, flag, sflag, credp); mutex_exit(&hidp->hid_mutex); if (rval != 0) { hid_pm_idle_component(hidp); } return (rval); } static int hid_chrclose(dev_t dev, int flag, int otyp, cred_t *credp) { int rval; minor_t minor = getminor(dev); int instance; hid_state_t *hidp; instance = HID_MINOR_TO_INSTANCE(minor); hidp = ddi_get_soft_state(hid_statep, instance); if (hidp == NULL) { return (ENXIO); } if (!HID_IS_UGEN_OPEN(minor)) { return (ENXIO); } mutex_enter(&hidp->hid_mutex); rval = usb_ugen_close(hidp->hid_ugen_hdl, dev, flag, otyp, credp); mutex_exit(&hidp->hid_mutex); if (rval == 0) { hid_pm_idle_component(hidp); } return (rval); } static int hid_read(dev_t dev, struct uio *uiop, cred_t *credp) { int rval; minor_t minor = getminor(dev); int instance; hid_state_t *hidp; instance = HID_MINOR_TO_INSTANCE(minor); hidp = ddi_get_soft_state(hid_statep, instance); if (hidp == NULL) { return (ENXIO); } if (!HID_IS_UGEN_OPEN(minor)) { return (ENXIO); } rval = usb_ugen_read(hidp->hid_ugen_hdl, dev, uiop, credp); return (rval); } static int hid_write(dev_t dev, struct uio *uiop, cred_t *credp) { int rval; minor_t minor = getminor(dev); int instance; hid_state_t *hidp; instance = HID_MINOR_TO_INSTANCE(minor); hidp = ddi_get_soft_state(hid_statep, instance); if (hidp == NULL) { return (ENXIO); } if (!HID_IS_UGEN_OPEN(minor)) { return (ENXIO); } rval = usb_ugen_write(hidp->hid_ugen_hdl, dev, uiop, credp); return (rval); } static int hid_poll(dev_t dev, short events, int anyyet, short *reventsp, struct pollhead **phpp) { int rval; minor_t minor = getminor(dev); int instance; hid_state_t *hidp; instance = HID_MINOR_TO_INSTANCE(minor); hidp = ddi_get_soft_state(hid_statep, instance); if (hidp == NULL) { return (ENXIO); } if (!HID_IS_UGEN_OPEN(minor)) { return (ENXIO); } rval = usb_ugen_poll(hidp->hid_ugen_hdl, dev, events, anyyet, reventsp, phpp); return (rval); } /* * hid_open : * Open entry point: Opens the interrupt pipe. Sets up queues. */ /*ARGSUSED*/ static int hid_open(queue_t *q, dev_t *devp, int flag, int sflag, cred_t *credp) { int no_of_ep = 0; int rval; int instance; hid_state_t *hidp; minor_t minor = getminor(*devp); instance = HID_MINOR_TO_INSTANCE(minor); hidp = ddi_get_soft_state(hid_statep, instance); if (hidp == NULL) { return (ENXIO); } USB_DPRINTF_L4(PRINT_MASK_OPEN, hidp->hid_log_handle, "hid_open: Begin"); /* * If this is a ugen device, return ENOSTR (no streams). This will * cause spec_open to try hid_chropen from our regular ops_cb instead * (and thus treat us as a plain character device). */ if (HID_IS_UGEN_OPEN(minor)) { return (ENOSTR); } if (sflag) { /* clone open NOT supported here */ return (ENXIO); } if (!(flag & FREAD)) { return (EIO); } mutex_enter(&hidp->hid_mutex); /* * This is a workaround: * Currently, if we open an already disconnected device, and send * a CONSOPENPOLL ioctl to it, the system will panic, please refer * to the processing HID_OPEN_POLLED_INPUT ioctl in the routine * hid_mctl_receive(). * The consconfig_dacf module need this interface to detect if the * device is already disconnnected. */ if (HID_IS_INTERNAL_OPEN(minor) && (hidp->hid_dev_state == USB_DEV_DISCONNECTED)) { mutex_exit(&hidp->hid_mutex); return (ENODEV); } if (HID_IS_INTERNAL_OPEN(minor) && (hidp->hid_internal_rq != NULL)) { ASSERT(hidp->hid_internal_rq == q); mutex_exit(&hidp->hid_mutex); return (0); } if ((!HID_IS_INTERNAL_OPEN(minor)) && (hidp->hid_external_rq != NULL)) { ASSERT(hidp->hid_external_rq == q); mutex_exit(&hidp->hid_mutex); return (0); } mutex_exit(&hidp->hid_mutex); q->q_ptr = hidp; WR(q)->q_ptr = hidp; mutex_enter(&hidp->hid_mutex); if (hidp->hid_inuse_rq != NULL) { /* Pipe has already been setup */ if (HID_IS_INTERNAL_OPEN(minor)) { hidp->hid_internal_flag = HID_STREAMS_OPEN; hidp->hid_inuse_rq = hidp->hid_internal_rq = q; } else { hidp->hid_external_flag = HID_STREAMS_OPEN; hidp->hid_inuse_rq = hidp->hid_external_rq = q; } mutex_exit(&hidp->hid_mutex); qprocson(q); return (0); } /* Pipe only needs to be opened once */ hidp->hid_interrupt_pipe = NULL; no_of_ep = hidp->hid_if_descr.bNumEndpoints; mutex_exit(&hidp->hid_mutex); /* Check if interrupt endpoint exists */ if (no_of_ep > 0) { /* Open the interrupt pipe */ if (usb_pipe_xopen(hidp->hid_dip, &hidp->hid_ep_intr_xdescr, &hidp->hid_intr_pipe_policy, USB_FLAGS_SLEEP, &hidp->hid_interrupt_pipe) != USB_SUCCESS) { q->q_ptr = NULL; WR(q)->q_ptr = NULL; return (EIO); } } hid_pm_busy_component(hidp); (void) pm_raise_power(hidp->hid_dip, 0, USB_DEV_OS_FULL_PWR); mutex_enter(&hidp->hid_mutex); if (HID_IS_INTERNAL_OPEN(minor)) { hidp->hid_internal_flag = HID_STREAMS_OPEN; hidp->hid_inuse_rq = hidp->hid_internal_rq = q; } else { hidp->hid_external_flag = HID_STREAMS_OPEN; hidp->hid_inuse_rq = hidp->hid_external_rq = q; } mutex_exit(&hidp->hid_mutex); qprocson(q); mutex_enter(&hidp->hid_mutex); if ((rval = hid_start_intr_polling(hidp)) != USB_SUCCESS) { USB_DPRINTF_L2(PRINT_MASK_OPEN, hidp->hid_log_handle, "unable to start intr pipe polling. rval = %d", rval); if (HID_IS_INTERNAL_OPEN(minor)) hidp->hid_internal_flag = HID_STREAMS_DISMANTLING; else hidp->hid_external_flag = HID_STREAMS_DISMANTLING; mutex_exit(&hidp->hid_mutex); usb_pipe_close(hidp->hid_dip, hidp->hid_interrupt_pipe, USB_FLAGS_SLEEP, NULL, NULL); mutex_enter(&hidp->hid_mutex); hidp->hid_interrupt_pipe = NULL; mutex_exit(&hidp->hid_mutex); qprocsoff(q); mutex_enter(&hidp->hid_mutex); if (HID_IS_INTERNAL_OPEN(minor)) { hidp->hid_internal_flag = 0; hidp->hid_internal_rq = NULL; if (hidp->hid_external_flag == HID_STREAMS_OPEN) hidp->hid_inuse_rq = hidp->hid_external_rq; else hidp->hid_inuse_rq = NULL; } else { hidp->hid_external_flag = 0; hidp->hid_external_rq = NULL; if (hidp->hid_internal_flag == HID_STREAMS_OPEN) hidp->hid_inuse_rq = hidp->hid_internal_rq; else hidp->hid_inuse_rq = NULL; } mutex_exit(&hidp->hid_mutex); q->q_ptr = NULL; WR(q)->q_ptr = NULL; hid_pm_idle_component(hidp); return (EIO); } mutex_exit(&hidp->hid_mutex); USB_DPRINTF_L4(PRINT_MASK_OPEN, hidp->hid_log_handle, "hid_open: End"); /* * Keyboard and mouse is Power managed by device activity. * All other devices go busy on open and idle on close. */ switch (hidp->hid_pm->hid_pm_strategy) { case HID_PM_ACTIVITY: hid_pm_idle_component(hidp); break; default: break; } return (0); } /* * hid_close : * Close entry point. */ /*ARGSUSED*/ static int hid_close(queue_t *q, int flag, cred_t *credp) { hid_state_t *hidp = (hid_state_t *)q->q_ptr; queue_t *wq; mblk_t *mp; USB_DPRINTF_L4(PRINT_MASK_CLOSE, hidp->hid_log_handle, "hid_close:"); mutex_enter(&hidp->hid_mutex); ASSERT((hidp->hid_internal_rq == q) || (hidp->hid_external_rq == q)); if (hidp->hid_internal_rq == q) hidp->hid_internal_flag = HID_STREAMS_DISMANTLING; else hidp->hid_external_flag = HID_STREAMS_DISMANTLING; mutex_exit(&hidp->hid_mutex); /* * In case there are any outstanding requests on * the default pipe, wait forever for them to complete. */ (void) usb_pipe_drain_reqs(hidp->hid_dip, hidp->hid_default_pipe, 0, USB_FLAGS_SLEEP, NULL, 0); mutex_enter(&hidp->hid_mutex); wq = WR(q); /* drain any M_CTLS on the WQ */ while (mp = getq(wq)) { hid_qreply_merror(wq, mp, EIO); mutex_exit(&hidp->hid_mutex); hid_pm_idle_component(hidp); mutex_enter(&hidp->hid_mutex); } mutex_exit(&hidp->hid_mutex); qprocsoff(q); q->q_ptr = NULL; wq->q_ptr = NULL; mutex_enter(&hidp->hid_mutex); if (hidp->hid_internal_rq == q) { hidp->hid_internal_rq = NULL; hidp->hid_internal_flag = 0; if (hidp->hid_inuse_rq == q) { /* We are closing the active stream */ if (hidp->hid_external_flag == HID_STREAMS_OPEN) hidp->hid_inuse_rq = hidp->hid_external_rq; else hidp->hid_inuse_rq = NULL; } } else { hidp->hid_external_rq = NULL; hidp->hid_external_flag = 0; if (hidp->hid_inuse_rq == q) { /* We are closing the active stream */ if (hidp->hid_internal_flag == HID_STREAMS_OPEN) hidp->hid_inuse_rq = hidp->hid_internal_rq; else hidp->hid_inuse_rq = NULL; } } if (hidp->hid_inuse_rq != NULL) { mutex_exit(&hidp->hid_mutex); return (0); } /* all queues are closed, close USB pipes */ hid_close_intr_pipe(hidp); mutex_exit(&hidp->hid_mutex); /* * Devices other than keyboard/mouse go idle on close. */ switch (hidp->hid_pm->hid_pm_strategy) { case HID_PM_ACTIVITY: break; default: hid_pm_idle_component(hidp); break; } USB_DPRINTF_L4(PRINT_MASK_CLOSE, hidp->hid_log_handle, "hid_close: End"); return (0); } /* * hid_wput : * write put routine for the hid module */ static int hid_wput(queue_t *q, mblk_t *mp) { hid_state_t *hidp = (hid_state_t *)q->q_ptr; int error = USB_SUCCESS; struct iocblk *iocbp; mblk_t *datap; int direction; struct copyresp *crp; queue_t *tmpq; int flag; USB_DPRINTF_L4(PRINT_MASK_ALL, hidp->hid_log_handle, "hid_wput: Begin"); /* See if the upper module is passing the right thing */ ASSERT(mp != NULL); ASSERT(mp->b_datap != NULL); switch (mp->b_datap->db_type) { case M_FLUSH: /* Canonical flush handling */ if (*mp->b_rptr & FLUSHW) { flushq(q, FLUSHDATA); } /* read queue not used so just send up */ if (*mp->b_rptr & FLUSHR) { *mp->b_rptr &= ~FLUSHW; qreply(q, mp); } else { freemsg(mp); } break; case M_IOCTL: iocbp = (struct iocblk *)mp->b_rptr; /* Only accept transparent ioctls */ if (iocbp->ioc_count != TRANSPARENT) { miocnak(q, mp, 0, EINVAL); break; } switch (iocbp->ioc_cmd) { case HIDIOCKMGDIRECT: mutex_enter(&hidp->hid_mutex); ASSERT(hidp->hid_inuse_rq != NULL); mutex_exit(&hidp->hid_mutex); if ((datap = allocb(sizeof (int), BPRI_MED)) == NULL) { miocnak(q, mp, 0, ENOMEM); break; } mutex_enter(&hidp->hid_mutex); if (hidp->hid_inuse_rq == hidp->hid_internal_rq) { *(int *)datap->b_wptr = 0; datap->b_wptr += sizeof (int); } else { ASSERT(hidp->hid_inuse_rq == hidp->hid_external_rq); *(int *)datap->b_wptr = 1; datap->b_wptr += sizeof (int); } mutex_exit(&hidp->hid_mutex); mcopyout(mp, NULL, sizeof (int), NULL, datap); qreply(q, mp); break; case HIDIOCKMSDIRECT: mcopyin(mp, NULL, sizeof (int), NULL); qreply(q, mp); break; default: miocnak(q, mp, 0, ENOTTY); } break; case M_IOCDATA: crp = (void *)mp->b_rptr; if (crp->cp_rval != 0) { miocnak(q, mp, 0, EIO); break; } switch (crp->cp_cmd) { case HIDIOCKMGDIRECT: miocack(q, mp, 0, 0); break; case HIDIOCKMSDIRECT: direction = *(int *)mp->b_cont->b_rptr; if ((direction != 0) && (direction != 1)) { miocnak(q, mp, 0, EINVAL); break; } mutex_enter(&hidp->hid_mutex); if (direction == 0) { /* The internal stream is made active */ flag = hidp->hid_internal_flag; tmpq = hidp->hid_internal_rq; } else { /* The external stream is made active */ flag = hidp->hid_external_flag; tmpq = hidp->hid_external_rq; } if (flag != HID_STREAMS_OPEN) { mutex_exit(&hidp->hid_mutex); miocnak(q, mp, 0, EIO); break; } hidp->hid_inuse_rq = tmpq; mutex_exit(&hidp->hid_mutex); miocack(q, mp, 0, 0); break; default: miocnak(q, mp, 0, ENOTTY); break; } break; case M_CTL: /* we are busy now */ hid_pm_busy_component(hidp); if (q->q_first) { (void) putq(q, mp); } else { error = hid_mctl_receive(q, mp); switch (error) { case HID_ENQUEUE: /* * put this mblk on the WQ for the wsrv to * process */ (void) putq(q, mp); break; case HID_INPROGRESS: /* request has been queued to the device */ break; case HID_SUCCESS: /* * returned by M_CTLS that are processed * immediately */ /* FALLTHRU */ case HID_FAILURE: default: hid_pm_idle_component(hidp); break; } } break; default: hid_qreply_merror(q, mp, EINVAL); error = USB_FAILURE; break; } USB_DPRINTF_L4(PRINT_MASK_ALL, hidp->hid_log_handle, "hid_wput: End"); return (DDI_SUCCESS); } /* * hid_wsrv : * Write service routine for hid. When a message arrives through * hid_wput(), it is kept in write queue to be serviced later. */ static int hid_wsrv(queue_t *q) { hid_state_t *hidp = (hid_state_t *)q->q_ptr; int error; mblk_t *mp; USB_DPRINTF_L4(PRINT_MASK_ALL, hidp->hid_log_handle, "hid_wsrv: Begin"); mutex_enter(&hidp->hid_mutex); USB_DPRINTF_L4(PRINT_MASK_ALL, hidp->hid_log_handle, "hid_wsrv: dev_state: %s", usb_str_dev_state(hidp->hid_dev_state)); /* * raise power if we are powered down. It is OK to block here since * we have a separate thread to process this STREAM */ if (hidp->hid_dev_state == USB_DEV_PWRED_DOWN) { mutex_exit(&hidp->hid_mutex); (void) pm_raise_power(hidp->hid_dip, 0, USB_DEV_OS_FULL_PWR); mutex_enter(&hidp->hid_mutex); } /* * continue servicing all the M_CTL's till the queue is empty * or the device gets disconnected or till a hid_close() */ while ((hidp->hid_dev_state == USB_DEV_ONLINE) && (HID_STREAMS_FLAG(q, hidp) != HID_STREAMS_DISMANTLING) && ((mp = getq(q)) != NULL)) { /* Send a message down */ mutex_exit(&hidp->hid_mutex); error = hid_mctl_receive(q, mp); switch (error) { case HID_ENQUEUE: /* put this mblk back on q to preserve order */ (void) putbq(q, mp); break; case HID_INPROGRESS: /* request has been queued to the device */ break; case HID_SUCCESS: case HID_FAILURE: default: hid_pm_idle_component(hidp); break; } mutex_enter(&hidp->hid_mutex); } mutex_exit(&hidp->hid_mutex); USB_DPRINTF_L4(PRINT_MASK_ALL, hidp->hid_log_handle, "hid_wsrv: End"); return (DDI_SUCCESS); } /* * hid_power: * power entry point */ static int hid_power(dev_info_t *dip, int comp, int level) { int instance = ddi_get_instance(dip); hid_state_t *hidp; hid_power_t *hidpm; int retval; hidp = ddi_get_soft_state(hid_statep, instance); USB_DPRINTF_L3(PRINT_MASK_PM, hidp->hid_log_handle, "hid_power:" " hid_state: comp=%d level=%d", comp, level); /* check if we are transitioning to a legal power level */ mutex_enter(&hidp->hid_mutex); hidpm = hidp->hid_pm; if (USB_DEV_PWRSTATE_OK(hidpm->hid_pwr_states, level)) { USB_DPRINTF_L2(PRINT_MASK_PM, hidp->hid_log_handle, "hid_power: illegal level=%d hid_pwr_states=%d", level, hidpm->hid_pwr_states); mutex_exit(&hidp->hid_mutex); return (DDI_FAILURE); } switch (level) { case USB_DEV_OS_PWR_OFF: retval = hid_pwrlvl0(hidp); break; case USB_DEV_OS_PWR_1: retval = hid_pwrlvl1(hidp); break; case USB_DEV_OS_PWR_2: retval = hid_pwrlvl2(hidp); break; case USB_DEV_OS_FULL_PWR: retval = hid_pwrlvl3(hidp); break; default: retval = USB_FAILURE; break; } mutex_exit(&hidp->hid_mutex); return ((retval == USB_SUCCESS) ? DDI_SUCCESS : DDI_FAILURE); } /* * hid_interrupt_pipe_callback: * Callback function for the hid intr pipe. This function is called by * USBA when a buffer has been filled. This driver does not cook the data, * it just sends the message up. */ static void hid_interrupt_pipe_callback(usb_pipe_handle_t pipe, usb_intr_req_t *req) { hid_state_t *hidp = (hid_state_t *)req->intr_client_private; queue_t *q; USB_DPRINTF_L4(PRINT_MASK_ALL, hidp->hid_log_handle, "hid_interrupt_pipe_callback: ph = 0x%p req = 0x%p", (void *)pipe, (void *)req); hid_pm_busy_component(hidp); mutex_enter(&hidp->hid_mutex); /* * If hid_close() is in progress, we shouldn't try accessing queue * Otherwise indicate that a putnext is going to happen, so * if close after this, that should wait for the putnext to finish. */ if (HID_STREAMS_FLAG(hidp->hid_inuse_rq, hidp) == HID_STREAMS_OPEN) { /* * Check if data can be put to the next queue. */ if (!canputnext(hidp->hid_inuse_rq)) { USB_DPRINTF_L2(PRINT_MASK_ALL, hidp->hid_log_handle, "Buffer flushed when overflowed."); /* Flush the queue above */ hid_flush(hidp->hid_inuse_rq); mutex_exit(&hidp->hid_mutex); } else { q = hidp->hid_inuse_rq; mutex_exit(&hidp->hid_mutex); /* Put data upstream */ putnext(q, req->intr_data); /* usb_free_intr_req should not free data */ req->intr_data = NULL; } } else { mutex_exit(&hidp->hid_mutex); } /* free request and data */ usb_free_intr_req(req); hid_pm_idle_component(hidp); } /* * hid_default_pipe_callback : * Callback routine for the asynchronous control transfer * Called from hid_send_async_ctrl_request() where we open * the pipe in exclusive mode */ static void hid_default_pipe_callback(usb_pipe_handle_t pipe, usb_ctrl_req_t *req) { hid_default_pipe_arg_t *hid_default_pipe_arg = (hid_default_pipe_arg_t *)req->ctrl_client_private; queue_t *wq = hid_default_pipe_arg->hid_default_pipe_arg_queue; queue_t *rq = RD(wq); hid_state_t *hidp = (hid_state_t *)rq->q_ptr; mblk_t *mctl_mp; mblk_t *data = NULL; USB_DPRINTF_L4(PRINT_MASK_ALL, hidp->hid_log_handle, "hid_default_pipe_callback: " "ph = 0x%p, req = 0x%p, data= 0x%p", (void *)pipe, (void *)req, (void *)data); ASSERT((req->ctrl_cb_flags & USB_CB_INTR_CONTEXT) == 0); if (req->ctrl_data) { data = req->ctrl_data; req->ctrl_data = NULL; } /* * Free the b_cont of the original message that was sent down. */ mctl_mp = hid_default_pipe_arg->hid_default_pipe_arg_mblk; freemsg(mctl_mp->b_cont); /* chain the mblk received to the original & send it up */ mctl_mp->b_cont = data; if (canputnext(rq)) { putnext(rq, mctl_mp); } else { freemsg(mctl_mp); /* avoid leak */ } /* * Free the argument for the asynchronous callback */ kmem_free(hid_default_pipe_arg, sizeof (hid_default_pipe_arg_t)); /* * Free the control pipe request structure. */ usb_free_ctrl_req(req); mutex_enter(&hidp->hid_mutex); hidp->hid_default_pipe_req--; ASSERT(hidp->hid_default_pipe_req >= 0); mutex_exit(&hidp->hid_mutex); hid_pm_idle_component(hidp); qenable(wq); } /* * hid_interrupt_pipe_exception_callback: * Exception callback routine for interrupt pipe. If there is any data, * destroy it. No threads are waiting for the exception callback. */ /*ARGSUSED*/ static void hid_interrupt_pipe_exception_callback(usb_pipe_handle_t pipe, usb_intr_req_t *req) { hid_state_t *hidp = (hid_state_t *)req->intr_client_private; mblk_t *data = req->intr_data; usb_cb_flags_t flags = req->intr_cb_flags; int rval; USB_DPRINTF_L2(PRINT_MASK_ALL, hidp->hid_log_handle, "hid_interrupt_pipe_exception_callback: " "completion_reason = 0x%x, data = 0x%p, flag = 0x%x", req->intr_completion_reason, (void *)data, req->intr_cb_flags); ASSERT((req->intr_cb_flags & USB_CB_INTR_CONTEXT) == 0); if (((flags & USB_CB_FUNCTIONAL_STALL) != 0) && ((flags & USB_CB_STALL_CLEARED) == 0)) { USB_DPRINTF_L2(PRINT_MASK_ALL, hidp->hid_log_handle, "hid_interrupt_pipe_exception_callback: " "unable to clear stall. flags = 0x%x", req->intr_cb_flags); } mutex_enter(&hidp->hid_mutex); switch (req->intr_completion_reason) { case USB_CR_STOPPED_POLLING: case USB_CR_PIPE_CLOSING: default: break; case USB_CR_PIPE_RESET: case USB_CR_NO_RESOURCES: if ((hidp->hid_dev_state == USB_DEV_ONLINE) && ((rval = hid_start_intr_polling(hidp)) != USB_SUCCESS)) { USB_DPRINTF_L2(PRINT_MASK_ALL, hidp->hid_log_handle, "unable to restart interrupt poll. rval = %d", rval); } break; } mutex_exit(&hidp->hid_mutex); usb_free_intr_req(req); } /* * hid_default_pipe_exception_callback: * Exception callback routine for default pipe. */ /*ARGSUSED*/ static void hid_default_pipe_exception_callback(usb_pipe_handle_t pipe, usb_ctrl_req_t *req) { hid_default_pipe_arg_t *hid_default_pipe_arg = (hid_default_pipe_arg_t *)req->ctrl_client_private; queue_t *wq = hid_default_pipe_arg->hid_default_pipe_arg_queue; queue_t *rq = RD(wq); hid_state_t *hidp = (hid_state_t *)rq->q_ptr; usb_cr_t ctrl_completion_reason = req->ctrl_completion_reason; mblk_t *mp, *data = NULL; USB_DPRINTF_L2(PRINT_MASK_ALL, hidp->hid_log_handle, "hid_default_pipe_exception_callback: " "completion_reason = 0x%x, data = 0x%p, flag = 0x%x", ctrl_completion_reason, (void *)data, req->ctrl_cb_flags); ASSERT((req->ctrl_cb_flags & USB_CB_INTR_CONTEXT) == 0); mp = hid_default_pipe_arg->hid_default_pipe_arg_mblk; /* * Pass an error message up. Reuse existing mblk. */ if (canputnext(rq)) { mp->b_datap->db_type = M_ERROR; mp->b_rptr = mp->b_datap->db_base; mp->b_wptr = mp->b_rptr + sizeof (char); *mp->b_rptr = EIO; putnext(rq, mp); } else { freemsg(mp); } kmem_free(hid_default_pipe_arg, sizeof (hid_default_pipe_arg_t)); mutex_enter(&hidp->hid_mutex); hidp->hid_default_pipe_req--; ASSERT(hidp->hid_default_pipe_req >= 0); mutex_exit(&hidp->hid_mutex); qenable(wq); usb_free_ctrl_req(req); hid_pm_idle_component(hidp); } /* * event handling: * * hid_reconnect_event_callback: * the device was disconnected but this instance not detached, probably * because the device was busy * * If the same device, continue with restoring state */ static int hid_restore_state_event_callback(dev_info_t *dip) { hid_state_t *hidp = (hid_state_t *)ddi_get_soft_state(hid_statep, ddi_get_instance(dip)); ASSERT(hidp != NULL); USB_DPRINTF_L3(PRINT_MASK_EVENTS, hidp->hid_log_handle, "hid_restore_state_event_callback: dip=0x%p", (void *)dip); hid_restore_device_state(dip, hidp); return (USB_SUCCESS); } /* * hid_cpr_suspend * Fail suspend if we can't finish outstanding i/o activity. */ static int hid_cpr_suspend(hid_state_t *hidp) { int rval, prev_state; int retval = USB_FAILURE; USB_DPRINTF_L4(PRINT_MASK_EVENTS, hidp->hid_log_handle, "hid_cpr_suspend: dip=0x%p", (void *)hidp->hid_dip); mutex_enter(&hidp->hid_mutex); switch (hidp->hid_dev_state) { case USB_DEV_ONLINE: case USB_DEV_PWRED_DOWN: prev_state = hidp->hid_dev_state; hidp->hid_dev_state = USB_DEV_SUSPENDED; mutex_exit(&hidp->hid_mutex); /* drain all request outstanding on the default control pipe */ rval = usb_pipe_drain_reqs(hidp->hid_dip, hidp->hid_default_pipe, hid_default_pipe_drain_timeout, USB_FLAGS_SLEEP, NULL, 0); /* fail checkpoint if we haven't finished the job yet */ mutex_enter(&hidp->hid_mutex); if ((rval != USB_SUCCESS) || (hidp->hid_default_pipe_req > 0)) { USB_DPRINTF_L2(PRINT_MASK_EVENTS, hidp->hid_log_handle, "hid_cpr_suspend: " "device busy - can't checkpoint"); /* fall back to previous state */ hidp->hid_dev_state = prev_state; } else { retval = USB_SUCCESS; hid_save_device_state(hidp); } break; case USB_DEV_DISCONNECTED: hidp->hid_dev_state = USB_DEV_SUSPENDED; hid_save_device_state(hidp); retval = USB_SUCCESS; break; case USB_DEV_SUSPENDED: default: USB_DPRINTF_L2(PRINT_MASK_EVENTS, hidp->hid_log_handle, "hid_cpr_suspend: Illegal dev state: %d", hidp->hid_dev_state); break; } mutex_exit(&hidp->hid_mutex); if ((retval == USB_SUCCESS) && hidp->hid_ugen_hdl != NULL) { retval = usb_ugen_detach(hidp->hid_ugen_hdl, DDI_SUSPEND); } return (retval); } static void hid_cpr_resume(hid_state_t *hidp) { USB_DPRINTF_L4(PRINT_MASK_EVENTS, hidp->hid_log_handle, "hid_cpr_resume: dip=0x%p", (void *)hidp->hid_dip); hid_restore_device_state(hidp->hid_dip, hidp); if (hidp->hid_ugen_hdl != NULL) { (void) usb_ugen_attach(hidp->hid_ugen_hdl, DDI_RESUME); } } /* * hid_disconnect_event_callback: * The device has been disconnected. We either wait for * detach or a reconnect event. Close all pipes and timeouts. */ static int hid_disconnect_event_callback(dev_info_t *dip) { hid_state_t *hidp; mblk_t *mp; hidp = (hid_state_t *)ddi_get_soft_state(hid_statep, ddi_get_instance(dip)); ASSERT(hidp != NULL); USB_DPRINTF_L4(PRINT_MASK_EVENTS, hidp->hid_log_handle, "hid_disconnect_event_callback: dip=0x%p", (void *)dip); mutex_enter(&hidp->hid_mutex); switch (hidp->hid_dev_state) { case USB_DEV_ONLINE: case USB_DEV_PWRED_DOWN: hidp->hid_dev_state = USB_DEV_DISCONNECTED; if (HID_IS_OPEN(hidp)) { USB_DPRINTF_L2(PRINT_MASK_EVENTS, hidp->hid_log_handle, "busy device has been disconnected"); } hid_save_device_state(hidp); /* * Notify applications about device removal, this only * applies to an external (aka. physical) open. For an * internal open, consconfig_dacf closes the queue. */ if (hidp->hid_external_flag == HID_STREAMS_OPEN) { queue_t *q = hidp->hid_external_rq; mutex_exit(&hidp->hid_mutex); mp = allocb(sizeof (uchar_t), BPRI_HI); if (mp != NULL) { mp->b_datap->db_type = M_ERROR; mp->b_rptr = mp->b_datap->db_base; mp->b_wptr = mp->b_rptr + sizeof (char); *mp->b_rptr = ENODEV; putnext(q, mp); } mutex_enter(&hidp->hid_mutex); } break; case USB_DEV_SUSPENDED: /* we remain suspended */ break; default: USB_DPRINTF_L2(PRINT_MASK_EVENTS, hidp->hid_log_handle, "hid_disconnect_event_callback: Illegal dev state: %d", hidp->hid_dev_state); break; } mutex_exit(&hidp->hid_mutex); return (USB_SUCCESS); } /* * hid_power_change_callback: * Async callback function to notify pm_raise_power completion * after hid_power entry point is called. */ static void hid_power_change_callback(void *arg, int rval) { hid_state_t *hidp; queue_t *wq; hidp = (hid_state_t *)arg; USB_DPRINTF_L4(PRINT_MASK_PM, hidp->hid_log_handle, "hid_power_change_callback - rval: %d", rval); mutex_enter(&hidp->hid_mutex); hidp->hid_pm->hid_raise_power = B_FALSE; if (hidp->hid_dev_state == USB_DEV_ONLINE) { wq = WR(hidp->hid_inuse_rq); mutex_exit(&hidp->hid_mutex); qenable(wq); } else { mutex_exit(&hidp->hid_mutex); } } /* * hid_parse_hid_descr: * Parse the hid descriptor, check after interface and after * endpoint descriptor */ static size_t hid_parse_hid_descr(usb_hid_descr_t *ret_descr, size_t ret_buf_len, usb_alt_if_data_t *altif_data, usb_ep_data_t *ep_data) { usb_cvs_data_t *cvs; int which_cvs; for (which_cvs = 0; which_cvs < altif_data->altif_n_cvs; which_cvs++) { cvs = &altif_data->altif_cvs[which_cvs]; if (cvs->cvs_buf == NULL) { continue; } if (cvs->cvs_buf[1] == USB_DESCR_TYPE_HID) { return (usb_parse_data("ccscccs", cvs->cvs_buf, cvs->cvs_buf_len, (void *)ret_descr, (size_t)ret_buf_len)); } } /* now try after endpoint */ for (which_cvs = 0; which_cvs < ep_data->ep_n_cvs; which_cvs++) { cvs = &ep_data->ep_cvs[which_cvs]; if (cvs->cvs_buf == NULL) { continue; } if (cvs->cvs_buf[1] == USB_DESCR_TYPE_HID) { return (usb_parse_data("ccscccs", cvs->cvs_buf, cvs->cvs_buf_len, (void *)ret_descr, (size_t)ret_buf_len)); } } return (USB_PARSE_ERROR); } /* * hid_parse_hid_descr_failure: * If parsing of hid descriptor failed and the device is * a keyboard or mouse, use predefined length and packet size. */ static int hid_parse_hid_descr_failure(hid_state_t *hidp) { /* * Parsing hid descriptor failed, probably because the * device did not return a valid hid descriptor. Check to * see if this is a keyboard or mouse. If so, use the * predefined hid descriptor length and packet size. * Otherwise, detach and return failure. */ USB_DPRINTF_L1(PRINT_MASK_ATTA, hidp->hid_log_handle, "Parsing of hid descriptor failed"); if (hidp->hid_if_descr.bInterfaceProtocol == KEYBOARD_PROTOCOL) { USB_DPRINTF_L2(PRINT_MASK_ATTA, hidp->hid_log_handle, "Set hid descriptor length to predefined " "USB_KB_HID_DESCR_LENGTH for keyboard."); /* device is a keyboard */ hidp->hid_hid_descr.wReportDescriptorLength = USB_KB_HID_DESCR_LENGTH; hidp->hid_packet_size = USBKPSZ; } else if (hidp->hid_if_descr.bInterfaceProtocol == MOUSE_PROTOCOL) { USB_DPRINTF_L2(PRINT_MASK_ATTA, hidp->hid_log_handle, "Set hid descriptor length to predefined " "USB_MS_HID_DESCR_LENGTH for mouse."); /* device is a mouse */ hidp->hid_hid_descr.wReportDescriptorLength = USB_MS_HID_DESCR_LENGTH; hidp->hid_packet_size = USBMSSZ; } else { return (USB_FAILURE); } return (USB_SUCCESS); } /* * hid_handle_report_descriptor: * Get the report descriptor, call hidparser routine to parse * it and query the hidparser tree to get the packet size */ static int hid_handle_report_descriptor(hid_state_t *hidp, int interface) { usb_cr_t completion_reason; usb_cb_flags_t cb_flags; mblk_t *data = NULL; hidparser_packet_info_t hpack; int i; usb_ctrl_setup_t setup = { USB_DEV_REQ_DEV_TO_HOST | /* bmRequestType */ USB_DEV_REQ_RCPT_IF, USB_REQ_GET_DESCR, /* bRequest */ USB_CLASS_DESCR_TYPE_REPORT, /* wValue */ 0, /* wIndex: interface, fill in later */ 0, /* wLength, fill in later */ 0 /* attributes */ }; /* * Parsing hid desciptor was successful earlier. * Get Report Descriptor */ setup.wIndex = (uint16_t)interface; setup.wLength = hidp->hid_hid_descr.wReportDescriptorLength; if (usb_pipe_ctrl_xfer_wait(hidp->hid_default_pipe, &setup, &data, /* data */ &completion_reason, &cb_flags, 0) != USB_SUCCESS) { USB_DPRINTF_L2(PRINT_MASK_ATTA, hidp->hid_log_handle, "Failed to receive the Report Descriptor"); freemsg(data); return (USB_FAILURE); } else { int n = hidp->hid_hid_descr.wReportDescriptorLength; ASSERT(data); /* Print the report descriptor */ for (i = 0; i < n; i++) { USB_DPRINTF_L3(PRINT_MASK_ATTA, hidp->hid_log_handle, "Index = %d\tvalue =0x%x", i, (int)(data->b_rptr[i])); } /* Get Report Descriptor was successful */ if (hidparser_parse_report_descriptor( data->b_rptr, hidp->hid_hid_descr.wReportDescriptorLength, &hidp->hid_hid_descr, &hidp->hid_report_descr) == HIDPARSER_SUCCESS) { /* find max intr-in xfer length */ hidparser_find_max_packet_size_from_report_descriptor( hidp->hid_report_descr, &hpack); /* round up to the nearest byte */ hidp->hid_packet_size = (hpack.max_packet_size + 7) / 8; /* if report id is used, add more more byte for it */ if (hpack.report_id != HID_REPORT_ID_UNDEFINED) { hidp->hid_packet_size++; } } else { USB_DPRINTF_L1(PRINT_MASK_ATTA, hidp->hid_log_handle, "Invalid Report Descriptor"); freemsg(data); return (USB_FAILURE); } freemsg(data); return (USB_SUCCESS); } } /* * hid_set_idle: * Make a clas specific request to SET_IDLE. * In this case send no reports if state has not changed. * See HID 7.2.4. */ /*ARGSUSED*/ static void hid_set_idle(hid_state_t *hidp) { usb_cr_t completion_reason; usb_cb_flags_t cb_flags; usb_ctrl_setup_t setup = { USB_DEV_REQ_HOST_TO_DEV | /* bmRequestType */ USB_DEV_REQ_TYPE_CLASS | USB_DEV_REQ_RCPT_IF, SET_IDLE, /* bRequest */ DURATION, /* wValue */ 0, /* wIndex: interface, fill in later */ 0, /* wLength */ 0 /* attributes */ }; USB_DPRINTF_L4(PRINT_MASK_ATTA, hidp->hid_log_handle, "hid_set_idle: Begin"); setup.wIndex = hidp->hid_if_descr.bInterfaceNumber; if (usb_pipe_ctrl_xfer_wait( hidp->hid_default_pipe, &setup, NULL, /* no data to send. */ &completion_reason, &cb_flags, 0) != USB_SUCCESS) { USB_DPRINTF_L2(PRINT_MASK_ATTA, hidp->hid_log_handle, "Failed while trying to set idle," "cr = %d, cb_flags = 0x%x\n", completion_reason, cb_flags); } USB_DPRINTF_L4(PRINT_MASK_ATTA, hidp->hid_log_handle, "hid_set_idle: End"); } /* * hid_set_protocol: * Initialize the device to set the preferred protocol */ /*ARGSUSED*/ static void hid_set_protocol(hid_state_t *hidp, int protocol) { usb_cr_t completion_reason; usb_cb_flags_t cb_flags; usb_ctrl_setup_t setup; USB_DPRINTF_L4(PRINT_MASK_ATTA, hidp->hid_log_handle, "hid_set_protocol(%d): Begin", protocol); /* initialize the setup request */ setup.bmRequestType = USB_DEV_REQ_HOST_TO_DEV | USB_DEV_REQ_TYPE_CLASS | USB_DEV_REQ_RCPT_IF; setup.bRequest = SET_PROTOCOL; setup.wValue = (uint16_t)protocol; setup.wIndex = hidp->hid_if_descr.bInterfaceNumber; setup.wLength = 0; setup.attrs = 0; if (usb_pipe_ctrl_xfer_wait( hidp->hid_default_pipe, /* bmRequestType */ &setup, NULL, /* no data to send */ &completion_reason, &cb_flags, 0) != USB_SUCCESS) { /* * Some devices fail to follow the specification * and instead of STALLing, they continously * NAK the SET_IDLE command. We need to reset * the pipe then, so that ohci doesn't panic. */ USB_DPRINTF_L2(PRINT_MASK_ATTA, hidp->hid_log_handle, "Failed while trying to set protocol:%d," "cr = %d cb_flags = 0x%x\n", completion_reason, cb_flags, protocol); } USB_DPRINTF_L4(PRINT_MASK_ATTA, hidp->hid_log_handle, "hid_set_protocol: End"); } /* * hid_detach_cleanup: * called by attach and detach for cleanup. */ static void hid_detach_cleanup(dev_info_t *dip, hid_state_t *hidp) { int flags = hidp->hid_attach_flags; int rval; hid_power_t *hidpm; USB_DPRINTF_L4(PRINT_MASK_ALL, hidp->hid_log_handle, "hid_detach_cleanup: Begin"); if ((hidp->hid_attach_flags & HID_LOCK_INIT) == 0) { goto done; } /* * Disable the event callbacks first, after this point, event * callbacks will never get called. Note we shouldn't hold * mutex while unregistering events because there may be a * competing event callback thread. Event callbacks are done * with ndi mutex held and this can cause a potential deadlock. */ usb_unregister_event_cbs(dip, &hid_events); mutex_enter(&hidp->hid_mutex); hidpm = hidp->hid_pm; USB_DPRINTF_L2(PRINT_MASK_ALL, hidp->hid_log_handle, "hid_detach_cleanup: hidpm=0x%p", (void *)hidpm); if (hidpm && (hidp->hid_dev_state != USB_DEV_DISCONNECTED)) { mutex_exit(&hidp->hid_mutex); hid_pm_busy_component(hidp); if (hid_is_pm_enabled(dip) == USB_SUCCESS) { if (hidpm->hid_wakeup_enabled) { /* First bring the device to full power */ (void) pm_raise_power(dip, 0, USB_DEV_OS_FULL_PWR); /* Disable remote wakeup */ rval = usb_handle_remote_wakeup(dip, USB_REMOTE_WAKEUP_DISABLE); if (rval != DDI_SUCCESS) { USB_DPRINTF_L2(PRINT_MASK_ALL, hidp->hid_log_handle, "hid_detach_cleanup: " "disble remote wakeup failed, " "rval= %d", rval); } } (void) pm_lower_power(dip, 0, USB_DEV_OS_PWR_OFF); } hid_pm_idle_component(hidp); mutex_enter(&hidp->hid_mutex); } if (hidpm) { freemsg(hidpm->hid_pm_pwrup); kmem_free(hidpm, sizeof (hid_power_t)); hidp->hid_pm = NULL; } if (hidp->hid_ugen_hdl != NULL) { rval = usb_ugen_detach(hidp->hid_ugen_hdl, DDI_DETACH); VERIFY0(rval); usb_ugen_release_hdl(hidp->hid_ugen_hdl); } mutex_exit(&hidp->hid_mutex); if (hidp->hid_report_descr != NULL) { (void) hidparser_free_report_descriptor_handle( hidp->hid_report_descr); } if (flags & HID_MINOR_NODES) { ddi_remove_minor_node(dip, NULL); } mutex_destroy(&hidp->hid_mutex); USB_DPRINTF_L4(PRINT_MASK_ALL, hidp->hid_log_handle, "hid_detach_cleanup: End"); done: usb_client_detach(dip, hidp->hid_dev_data); usb_free_log_hdl(hidp->hid_log_handle); ddi_soft_state_free(hid_statep, hidp->hid_instance); ddi_prop_remove_all(dip); } /* * hid_start_intr_polling: * Allocate an interrupt request structure, initialize, * and start interrupt transfers. */ static int hid_start_intr_polling(hid_state_t *hidp) { usb_intr_req_t *req; int rval = USB_SUCCESS; USB_DPRINTF_L4(PRINT_MASK_PM, hidp->hid_log_handle, "hid_start_intr_polling: " "dev_state=%s internal_str_flag=%d external_str_flag=%d ph=0x%p", usb_str_dev_state(hidp->hid_dev_state), hidp->hid_internal_flag, hidp->hid_external_flag, (void *)hidp->hid_interrupt_pipe); if (HID_IS_OPEN(hidp) && (hidp->hid_interrupt_pipe != NULL)) { /* * initialize interrupt pipe request structure */ req = usb_alloc_intr_req(hidp->hid_dip, 0, USB_FLAGS_SLEEP); req->intr_client_private = (usb_opaque_t)hidp; req->intr_attributes = USB_ATTRS_SHORT_XFER_OK | USB_ATTRS_AUTOCLEARING; req->intr_len = hidp->hid_packet_size; req->intr_cb = hid_interrupt_pipe_callback; req->intr_exc_cb = hid_interrupt_pipe_exception_callback; /* * Start polling on the interrupt pipe. */ mutex_exit(&hidp->hid_mutex); if ((rval = usb_pipe_intr_xfer(hidp->hid_interrupt_pipe, req, USB_FLAGS_SLEEP)) != USB_SUCCESS) { USB_DPRINTF_L2(PRINT_MASK_PM, hidp->hid_log_handle, "hid_start_intr_polling failed: rval = %d", rval); usb_free_intr_req(req); } mutex_enter(&hidp->hid_mutex); } USB_DPRINTF_L4(PRINT_MASK_PM, hidp->hid_log_handle, "hid_start_intr_polling: done, rval = %d", rval); return (rval); } /* * hid_close_intr_pipe: * close the interrupt pipe after draining all callbacks */ static void hid_close_intr_pipe(hid_state_t *hidp) { USB_DPRINTF_L4(PRINT_MASK_CLOSE, hidp->hid_log_handle, "hid_close_intr_pipe: Begin"); if (hidp->hid_interrupt_pipe) { /* * Close the interrupt pipe */ mutex_exit(&hidp->hid_mutex); usb_pipe_close(hidp->hid_dip, hidp->hid_interrupt_pipe, USB_FLAGS_SLEEP, NULL, NULL); mutex_enter(&hidp->hid_mutex); hidp->hid_interrupt_pipe = NULL; } USB_DPRINTF_L4(PRINT_MASK_CLOSE, hidp->hid_log_handle, "hid_close_intr_pipe: End"); } /* * hid_mctl_receive: * Handle M_CTL messages from upper stream. If * we don't understand the command, free message. */ static int hid_mctl_receive(register queue_t *q, register mblk_t *mp) { hid_state_t *hidp = (hid_state_t *)q->q_ptr; struct iocblk *iocp; int error = HID_FAILURE; uchar_t request_type; hid_req_t *hid_req_data = NULL; hid_polled_input_callback_t hid_polled_input; hid_vid_pid_t hid_vid_pid; USB_DPRINTF_L4(PRINT_MASK_ALL, hidp->hid_log_handle, "hid_mctl_receive"); iocp = (struct iocblk *)mp->b_rptr; switch (iocp->ioc_cmd) { case HID_SET_REPORT: /* FALLTHRU */ case HID_SET_IDLE: /* FALLTHRU */ case HID_SET_PROTOCOL: request_type = USB_DEV_REQ_HOST_TO_DEV | USB_DEV_REQ_RCPT_IF | USB_DEV_REQ_TYPE_CLASS; break; case HID_GET_REPORT: /* FALLTHRU */ case HID_GET_IDLE: /* FALLTHRU */ case HID_GET_PROTOCOL: request_type = USB_DEV_REQ_DEV_TO_HOST | USB_DEV_REQ_RCPT_IF | USB_DEV_REQ_TYPE_CLASS; break; case HID_GET_PARSER_HANDLE: if (canputnext(RD(q))) { freemsg(mp->b_cont); mp->b_cont = hid_data2mblk( (uchar_t *)&hidp->hid_report_descr, sizeof (hidp->hid_report_descr)); if (mp->b_cont == NULL) { /* * can't allocate mblk, indicate * that nothing is returned */ iocp->ioc_count = 0; } else { iocp->ioc_count = sizeof (hidp->hid_report_descr); } qreply(q, mp); return (HID_SUCCESS); } else { /* retry */ return (HID_ENQUEUE); } case HID_GET_VID_PID: if (canputnext(RD(q))) { freemsg(mp->b_cont); hid_vid_pid.VendorId = hidp->hid_dev_descr->idVendor; hid_vid_pid.ProductId = hidp->hid_dev_descr->idProduct; mp->b_cont = hid_data2mblk( (uchar_t *)&hid_vid_pid, sizeof (hid_vid_pid_t)); if (mp->b_cont == NULL) { /* * can't allocate mblk, indicate that nothing * is being returned. */ iocp->ioc_count = 0; } else { iocp->ioc_count = sizeof (hid_vid_pid_t); } qreply(q, mp); return (HID_SUCCESS); } else { /* retry */ return (HID_ENQUEUE); } case HID_OPEN_POLLED_INPUT: if (canputnext(RD(q))) { freemsg(mp->b_cont); /* Initialize the structure */ hid_polled_input.hid_polled_version = HID_POLLED_INPUT_V0; hid_polled_input.hid_polled_read = hid_polled_read; hid_polled_input.hid_polled_input_enter = hid_polled_input_enter; hid_polled_input.hid_polled_input_exit = hid_polled_input_exit; hid_polled_input.hid_polled_input_handle = (hid_polled_handle_t)hidp; mp->b_cont = hid_data2mblk( (uchar_t *)&hid_polled_input, sizeof (hid_polled_input_callback_t)); if (mp->b_cont == NULL) { /* * can't allocate mblk, indicate that nothing * is being returned. */ iocp->ioc_count = 0; } else { /* Call down into USBA */ (void) hid_polled_input_init(hidp); iocp->ioc_count = sizeof (hid_polled_input_callback_t); } qreply(q, mp); return (HID_SUCCESS); } else { /* retry */ return (HID_ENQUEUE); } case HID_CLOSE_POLLED_INPUT: /* Call down into USBA */ (void) hid_polled_input_fini(hidp); iocp->ioc_count = 0; qreply(q, mp); return (HID_SUCCESS); default: hid_qreply_merror(q, mp, EINVAL); return (HID_FAILURE); } /* * These (device executable) commands require a hid_req_t. * Make sure one is present */ if (mp->b_cont == NULL) { hid_qreply_merror(q, mp, EINVAL); return (error); } else { hid_req_data = (hid_req_t *)mp->b_cont->b_rptr; if ((iocp->ioc_cmd == HID_SET_REPORT) && (hid_req_data->hid_req_wLength == 0)) { hid_qreply_merror(q, mp, EINVAL); return (error); } } /* * Check is version no. is correct. This * is coming from the user */ if (hid_req_data->hid_req_version_no != HID_VERSION_V_0) { hid_qreply_merror(q, mp, EINVAL); return (error); } mutex_enter(&hidp->hid_mutex); USB_DPRINTF_L4(PRINT_MASK_ALL, hidp->hid_log_handle, "hid_mctl_receive: dev_state=%s", usb_str_dev_state(hidp->hid_dev_state)); switch (hidp->hid_dev_state) { case USB_DEV_PWRED_DOWN: /* * get the device full powered. We get a callback * which enables the WQ and kicks off IO */ hidp->hid_dev_state = USB_DEV_HID_POWER_CHANGE; mutex_exit(&hidp->hid_mutex); if (usb_req_raise_power(hidp->hid_dip, 0, USB_DEV_OS_FULL_PWR, hid_power_change_callback, hidp, 0) != USB_SUCCESS) { /* we retry raising power in wsrv */ mutex_enter(&hidp->hid_mutex); hidp->hid_dev_state = USB_DEV_PWRED_DOWN; mutex_exit(&hidp->hid_mutex); } error = HID_ENQUEUE; break; case USB_DEV_HID_POWER_CHANGE: mutex_exit(&hidp->hid_mutex); error = HID_ENQUEUE; break; case USB_DEV_ONLINE: if (HID_STREAMS_FLAG(q, hidp) != HID_STREAMS_DISMANTLING) { /* Send a message down */ mutex_exit(&hidp->hid_mutex); error = hid_mctl_execute_cmd(q, request_type, hid_req_data, mp); if (error == HID_FAILURE) { hid_qreply_merror(q, mp, EIO); } } else { mutex_exit(&hidp->hid_mutex); hid_qreply_merror(q, mp, EIO); } break; default: mutex_exit(&hidp->hid_mutex); hid_qreply_merror(q, mp, EIO); break; } return (error); } /* * hid_mctl_execute_cmd: * Send the command to the device. */ static int hid_mctl_execute_cmd(queue_t *q, int request_type, hid_req_t *hid_req_data, mblk_t *mp) { int request_index; struct iocblk *iocp; hid_default_pipe_arg_t *def_pipe_arg; hid_state_t *hidp = (hid_state_t *)q->q_ptr; iocp = (struct iocblk *)mp->b_rptr; USB_DPRINTF_L4(PRINT_MASK_ALL, hidp->hid_log_handle, "hid_mctl_execute_cmd: iocp=0x%p", (void *)iocp); request_index = hidp->hid_if_descr.bInterfaceNumber; /* * Set up the argument to be passed back to hid * when the asynchronous control callback is * executed. */ def_pipe_arg = kmem_zalloc(sizeof (hid_default_pipe_arg_t), 0); if (def_pipe_arg == NULL) { return (HID_FAILURE); } def_pipe_arg->hid_default_pipe_arg_queue = q; def_pipe_arg->hid_default_pipe_arg_mctlmsg.ioc_cmd = iocp->ioc_cmd; def_pipe_arg->hid_default_pipe_arg_mctlmsg.ioc_count = 0; def_pipe_arg->hid_default_pipe_arg_mblk = mp; /* * Send the command down to USBA through default * pipe. */ if (hid_send_async_ctrl_request(def_pipe_arg, hid_req_data, request_type, iocp->ioc_cmd, request_index) != USB_SUCCESS) { kmem_free(def_pipe_arg, sizeof (hid_default_pipe_arg_t)); return (HID_FAILURE); } return (HID_INPROGRESS); } /* * hid_send_async_ctrl_request: * Send an asynchronous control request to USBA. Since hid is a STREAMS * driver, it is not allowed to wait in its entry points except for the * open and close entry points. Therefore, hid must use the asynchronous * USBA calls. */ static int hid_send_async_ctrl_request(hid_default_pipe_arg_t *hid_default_pipe_arg, hid_req_t *hid_request, uchar_t request_type, int request_request, ushort_t request_index) { queue_t *q = hid_default_pipe_arg->hid_default_pipe_arg_queue; hid_state_t *hidp = (hid_state_t *)q->q_ptr; usb_ctrl_req_t *ctrl_req; int rval; size_t length = 0; USB_DPRINTF_L4(PRINT_MASK_ALL, hidp->hid_log_handle, "hid_send_async_ctrl_request: " "rq_type=%d rq_rq=%d index=%d", request_type, request_request, request_index); mutex_enter(&hidp->hid_mutex); hidp->hid_default_pipe_req++; mutex_exit(&hidp->hid_mutex); /* * Note that ctrl_req->ctrl_data should be allocated by usba * only for IN requests. OUT request(e.g SET_REPORT) can have a * non-zero wLength value but ctrl_data would be allocated by * client for them. */ if (hid_request->hid_req_wLength >= MAX_REPORT_DATA) { USB_DPRINTF_L2(PRINT_MASK_ALL, hidp->hid_log_handle, "hid_req_wLength is exceeded"); return (USB_FAILURE); } if ((request_type & USB_DEV_REQ_DIR_MASK) == USB_DEV_REQ_DEV_TO_HOST) { length = hid_request->hid_req_wLength; } if ((ctrl_req = usb_alloc_ctrl_req(hidp->hid_dip, length, 0)) == NULL) { USB_DPRINTF_L2(PRINT_MASK_ALL, hidp->hid_log_handle, "unable to alloc ctrl req. async trans failed"); mutex_enter(&hidp->hid_mutex); hidp->hid_default_pipe_req--; ASSERT(hidp->hid_default_pipe_req >= 0); mutex_exit(&hidp->hid_mutex); return (USB_FAILURE); } if ((request_type & USB_DEV_REQ_DIR_MASK) == USB_DEV_REQ_HOST_TO_DEV) { ASSERT((length == 0) && (ctrl_req->ctrl_data == NULL)); } ctrl_req->ctrl_bmRequestType = request_type; ctrl_req->ctrl_bRequest = (uint8_t)request_request; ctrl_req->ctrl_wValue = hid_request->hid_req_wValue; ctrl_req->ctrl_wIndex = request_index; ctrl_req->ctrl_wLength = hid_request->hid_req_wLength; /* host to device: create a msg from hid_req_data */ if ((request_type & USB_DEV_REQ_DIR_MASK) == USB_DEV_REQ_HOST_TO_DEV) { mblk_t *pblk = allocb(hid_request->hid_req_wLength, BPRI_HI); if (pblk == NULL) { usb_free_ctrl_req(ctrl_req); return (USB_FAILURE); } bcopy(hid_request->hid_req_data, pblk->b_wptr, hid_request->hid_req_wLength); pblk->b_wptr += hid_request->hid_req_wLength; ctrl_req->ctrl_data = pblk; } ctrl_req->ctrl_attributes = USB_ATTRS_AUTOCLEARING; ctrl_req->ctrl_client_private = (usb_opaque_t)hid_default_pipe_arg; ctrl_req->ctrl_cb = hid_default_pipe_callback; ctrl_req->ctrl_exc_cb = hid_default_pipe_exception_callback; if ((rval = usb_pipe_ctrl_xfer(hidp->hid_default_pipe, ctrl_req, 0)) != USB_SUCCESS) { mutex_enter(&hidp->hid_mutex); hidp->hid_default_pipe_req--; ASSERT(hidp->hid_default_pipe_req >= 0); mutex_exit(&hidp->hid_mutex); usb_free_ctrl_req(ctrl_req); USB_DPRINTF_L2(PRINT_MASK_ALL, hidp->hid_log_handle, "usb_pipe_ctrl_xfer() failed. rval = %d", rval); return (USB_FAILURE); } return (USB_SUCCESS); } /* * hid_create_pm_components: * Create the pm components required for power management. * For keyboard/mouse, the components is created only if the device * supports a remote wakeup. * For other hid devices they are created unconditionally. */ static void hid_create_pm_components(dev_info_t *dip, hid_state_t *hidp) { hid_power_t *hidpm; uint_t pwr_states; USB_DPRINTF_L4(PRINT_MASK_PM, hidp->hid_log_handle, "hid_create_pm_components: Begin"); /* Allocate the state structure */ hidpm = kmem_zalloc(sizeof (hid_power_t), KM_SLEEP); hidp->hid_pm = hidpm; hidpm->hid_state = hidp; hidpm->hid_raise_power = B_FALSE; hidpm->hid_pm_capabilities = 0; hidpm->hid_current_power = USB_DEV_OS_FULL_PWR; switch (hidp->hid_if_descr.bInterfaceProtocol) { case KEYBOARD_PROTOCOL: case MOUSE_PROTOCOL: hidpm->hid_pm_strategy = HID_PM_ACTIVITY; if ((hid_is_pm_enabled(dip) == USB_SUCCESS) && (usb_handle_remote_wakeup(dip, USB_REMOTE_WAKEUP_ENABLE) == USB_SUCCESS)) { USB_DPRINTF_L3(PRINT_MASK_PM, hidp->hid_log_handle, "hid_create_pm_components: Remote Wakeup Enabled"); if (usb_create_pm_components(dip, &pwr_states) == USB_SUCCESS) { hidpm->hid_wakeup_enabled = 1; hidpm->hid_pwr_states = (uint8_t)pwr_states; } } break; default: hidpm->hid_pm_strategy = HID_PM_OPEN_CLOSE; if ((hid_is_pm_enabled(dip) == USB_SUCCESS) && (usb_create_pm_components(dip, &pwr_states) == USB_SUCCESS)) { hidpm->hid_wakeup_enabled = 0; hidpm->hid_pwr_states = (uint8_t)pwr_states; } break; } USB_DPRINTF_L4(PRINT_MASK_PM, hidp->hid_log_handle, "hid_create_pm_components: END"); } /* * hid_is_pm_enabled * Check if the device is pm enabled. Always enable * pm on the new SUN mouse */ static int hid_is_pm_enabled(dev_info_t *dip) { hid_state_t *hidp = ddi_get_soft_state(hid_statep, ddi_get_instance(dip)); if (strcmp(ddi_node_name(dip), "mouse") == 0) { /* check for overrides first */ if (hid_pm_mouse || (ddi_prop_exists(DDI_DEV_T_ANY, dip, (DDI_PROP_DONTPASS | DDI_PROP_NOTPROM), "hid-mouse-pm-enable") == 1)) { return (USB_SUCCESS); } /* * Always enable PM for 1.05 or greater SUN mouse * hidp->hid_dev_descr won't be NULL. */ if ((hidp->hid_dev_descr->idVendor == HID_SUN_MOUSE_VENDOR_ID) && (hidp->hid_dev_descr->idProduct == HID_SUN_MOUSE_PROD_ID) && (hidp->hid_dev_descr->bcdDevice >= HID_SUN_MOUSE_BCDDEVICE)) { return (USB_SUCCESS); } } else { return (USB_SUCCESS); } return (USB_FAILURE); } /* * hid_save_device_state * Save the current device/driver state. */ static void hid_save_device_state(hid_state_t *hidp) { struct iocblk *mctlmsg; mblk_t *mp; queue_t *q; USB_DPRINTF_L4(PRINT_MASK_EVENTS, hidp->hid_log_handle, "hid_save_device_state"); if (!(HID_IS_OPEN(hidp))) return; if (hidp->hid_internal_flag == HID_STREAMS_OPEN) { /* * Send MCTLs up indicating that the device * will loose its state */ q = hidp->hid_internal_rq; mutex_exit(&hidp->hid_mutex); if (canputnext(q)) { mp = allocb(sizeof (struct iocblk), BPRI_HI); if (mp != NULL) { mp->b_datap->db_type = M_CTL; mctlmsg = (struct iocblk *) mp->b_datap->db_base; mctlmsg->ioc_cmd = HID_DISCONNECT_EVENT; mctlmsg->ioc_count = 0; putnext(q, mp); } } mutex_enter(&hidp->hid_mutex); } if (hidp->hid_external_flag == HID_STREAMS_OPEN) { /* * Send MCTLs up indicating that the device * will loose its state */ q = hidp->hid_external_rq; mutex_exit(&hidp->hid_mutex); if (canputnext(q)) { mp = allocb(sizeof (struct iocblk), BPRI_HI); if (mp != NULL) { mp->b_datap->db_type = M_CTL; mctlmsg = (struct iocblk *) mp->b_datap->db_base; mctlmsg->ioc_cmd = HID_DISCONNECT_EVENT; mctlmsg->ioc_count = 0; putnext(q, mp); } } mutex_enter(&hidp->hid_mutex); } mutex_exit(&hidp->hid_mutex); /* stop polling on the intr pipe */ usb_pipe_stop_intr_polling(hidp->hid_interrupt_pipe, USB_FLAGS_SLEEP); mutex_enter(&hidp->hid_mutex); } /* * hid_restore_device_state: * Set original configuration of the device. * Reopen intr pipe. * Enable wrq - this starts new transactions on the control pipe. */ static void hid_restore_device_state(dev_info_t *dip, hid_state_t *hidp) { int rval; hid_power_t *hidpm; struct iocblk *mctlmsg; mblk_t *mp; queue_t *q; hid_pm_busy_component(hidp); mutex_enter(&hidp->hid_mutex); USB_DPRINTF_L4(PRINT_MASK_ATTA, hidp->hid_log_handle, "hid_restore_device_state: %s", usb_str_dev_state(hidp->hid_dev_state)); hidpm = hidp->hid_pm; mutex_exit(&hidp->hid_mutex); /* First bring the device to full power */ (void) pm_raise_power(dip, 0, USB_DEV_OS_FULL_PWR); mutex_enter(&hidp->hid_mutex); if (hidp->hid_dev_state == USB_DEV_ONLINE) { /* * We failed the checkpoint, there is no need to restore * the device state */ mutex_exit(&hidp->hid_mutex); hid_pm_idle_component(hidp); return; } mutex_exit(&hidp->hid_mutex); /* Check if we are talking to the same device */ if (usb_check_same_device(dip, hidp->hid_log_handle, USB_LOG_L2, PRINT_MASK_ALL, USB_CHK_BASIC|USB_CHK_CFG, NULL) != USB_SUCCESS) { /* change the device state from suspended to disconnected */ mutex_enter(&hidp->hid_mutex); hidp->hid_dev_state = USB_DEV_DISCONNECTED; mutex_exit(&hidp->hid_mutex); hid_pm_idle_component(hidp); goto nodev; } hid_set_idle(hidp); hid_set_protocol(hidp, SET_REPORT_PROTOCOL); mutex_enter(&hidp->hid_mutex); /* if the device had remote wakeup earlier, enable it again */ if (hidpm->hid_wakeup_enabled) { mutex_exit(&hidp->hid_mutex); if ((rval = usb_handle_remote_wakeup(hidp->hid_dip, USB_REMOTE_WAKEUP_ENABLE)) != USB_SUCCESS) { USB_DPRINTF_L2(PRINT_MASK_ATTA, hidp->hid_log_handle, "usb_handle_remote_wakeup failed (%d)", rval); } mutex_enter(&hidp->hid_mutex); } /* * restart polling on the interrupt pipe only if the device * was previously operational (open) */ if (HID_IS_OPEN(hidp)) { if ((rval = hid_start_intr_polling(hidp)) != USB_SUCCESS) { USB_DPRINTF_L3(PRINT_MASK_ATTA, hidp->hid_log_handle, "hid_restore_device_state:" "unable to restart intr pipe poll" " rval = %d ", rval); /* * change the device state from * suspended to disconnected */ hidp->hid_dev_state = USB_DEV_DISCONNECTED; mutex_exit(&hidp->hid_mutex); hid_pm_idle_component(hidp); goto nodev; } if (hidp->hid_dev_state == USB_DEV_DISCONNECTED) { USB_DPRINTF_L2(PRINT_MASK_EVENTS, hidp->hid_log_handle, "device is being re-connected"); } /* set the device state ONLINE */ hidp->hid_dev_state = USB_DEV_ONLINE; /* inform upstream modules that the device is back */ if (hidp->hid_internal_flag == HID_STREAMS_OPEN) { q = hidp->hid_internal_rq; mutex_exit(&hidp->hid_mutex); if (canputnext(q)) { mp = allocb(sizeof (struct iocblk), BPRI_HI); if (mp != NULL) { mp->b_datap->db_type = M_CTL; mctlmsg = (struct iocblk *) mp->b_datap->db_base; mctlmsg->ioc_cmd = HID_CONNECT_EVENT; mctlmsg->ioc_count = 0; putnext(q, mp); } } /* enable write side q */ qenable(WR(q)); mutex_enter(&hidp->hid_mutex); } if (hidp->hid_external_flag == HID_STREAMS_OPEN) { q = hidp->hid_external_rq; mutex_exit(&hidp->hid_mutex); if (canputnext(q)) { mp = allocb(sizeof (struct iocblk), BPRI_HI); if (mp != NULL) { mp->b_datap->db_type = M_CTL; mctlmsg = (struct iocblk *) mp->b_datap->db_base; mctlmsg->ioc_cmd = HID_CONNECT_EVENT; mctlmsg->ioc_count = 0; putnext(q, mp); } } /* enable write side q */ qenable(WR(q)); mutex_enter(&hidp->hid_mutex); } } else { /* set the device state ONLINE */ hidp->hid_dev_state = USB_DEV_ONLINE; } mutex_exit(&hidp->hid_mutex); hid_pm_idle_component(hidp); return; nodev: /* * Notify applications about device removal. This only * applies to an external (aka. physical) open. Not sure how to * notify consconfig to close the internal minor node. */ mutex_enter(&hidp->hid_mutex); if ((q = hidp->hid_external_rq) == NULL) { mutex_exit(&hidp->hid_mutex); return; } mutex_exit(&hidp->hid_mutex); mp = allocb(sizeof (uchar_t), BPRI_HI); if (mp != NULL) { mp->b_datap->db_type = M_ERROR; mp->b_rptr = mp->b_datap->db_base; mp->b_wptr = mp->b_rptr + sizeof (char); *mp->b_rptr = ENODEV; putnext(q, mp); } } /* * hid_qreply_merror: * Pass an error message up. */ static void hid_qreply_merror(queue_t *q, mblk_t *mp, uchar_t errval) { mp->b_datap->db_type = M_ERROR; if (mp->b_cont) { freemsg(mp->b_cont); mp->b_cont = NULL; } mp->b_rptr = mp->b_datap->db_base; mp->b_wptr = mp->b_rptr + sizeof (char); *mp->b_rptr = errval; qreply(q, mp); } /* * hid_data2mblk: * Form an mblk from the given data */ static mblk_t * hid_data2mblk(uchar_t *buf, int len) { mblk_t *mp = NULL; if (len >= 0) { mp = allocb(len, BPRI_HI); if (mp) { bcopy(buf, mp->b_datap->db_base, len); mp->b_wptr += len; } } return (mp); } /* * hid_flush : * Flush data already sent upstreams to client module. */ static void hid_flush(queue_t *q) { /* * Flush pending data already sent upstream */ if ((q != NULL) && (q->q_next != NULL)) { (void) putnextctl1(q, M_FLUSH, FLUSHR); } } static void hid_pm_busy_component(hid_state_t *hid_statep) { ASSERT(!mutex_owned(&hid_statep->hid_mutex)); if (hid_statep->hid_pm != NULL) { mutex_enter(&hid_statep->hid_mutex); hid_statep->hid_pm->hid_pm_busy++; USB_DPRINTF_L4(PRINT_MASK_PM, hid_statep->hid_log_handle, "hid_pm_busy_component: %d", hid_statep->hid_pm->hid_pm_busy); mutex_exit(&hid_statep->hid_mutex); if (pm_busy_component(hid_statep->hid_dip, 0) != DDI_SUCCESS) { mutex_enter(&hid_statep->hid_mutex); hid_statep->hid_pm->hid_pm_busy--; USB_DPRINTF_L2(PRINT_MASK_PM, hid_statep->hid_log_handle, "hid_pm_busy_component failed: %d", hid_statep->hid_pm->hid_pm_busy); mutex_exit(&hid_statep->hid_mutex); } } } static void hid_pm_idle_component(hid_state_t *hid_statep) { ASSERT(!mutex_owned(&hid_statep->hid_mutex)); if (hid_statep->hid_pm != NULL) { if (pm_idle_component(hid_statep->hid_dip, 0) == DDI_SUCCESS) { mutex_enter(&hid_statep->hid_mutex); ASSERT(hid_statep->hid_pm->hid_pm_busy > 0); hid_statep->hid_pm->hid_pm_busy--; USB_DPRINTF_L4(PRINT_MASK_PM, hid_statep->hid_log_handle, "hid_pm_idle_component: %d", hid_statep->hid_pm->hid_pm_busy); mutex_exit(&hid_statep->hid_mutex); } } } /* * hid_pwrlvl0: * Functions to handle power transition for various levels * These functions act as place holders to issue USB commands * to the devices to change their power levels */ static int hid_pwrlvl0(hid_state_t *hidp) { hid_power_t *hidpm; int rval; struct iocblk *mctlmsg; mblk_t *mp_lowpwr, *mp_fullpwr; queue_t *q; hidpm = hidp->hid_pm; switch (hidp->hid_dev_state) { case USB_DEV_ONLINE: /* Deny the powerdown request if the device is busy */ if (hidpm->hid_pm_busy != 0) { return (USB_FAILURE); } if (HID_IS_OPEN(hidp)) { q = hidp->hid_inuse_rq; mutex_exit(&hidp->hid_mutex); if (canputnext(q)) { /* try to preallocate mblks */ mp_lowpwr = allocb( (int)sizeof (struct iocblk), BPRI_HI); mp_fullpwr = allocb( (int)sizeof (struct iocblk), BPRI_HI); if ((mp_lowpwr != NULL) && (mp_fullpwr != NULL)) { /* stop polling */ usb_pipe_stop_intr_polling( hidp->hid_interrupt_pipe, USB_FLAGS_SLEEP); /* * Send an MCTL up indicating that * we are powering off */ mp_lowpwr->b_datap->db_type = M_CTL; mctlmsg = (struct iocblk *) mp_lowpwr->b_datap->db_base; mctlmsg->ioc_cmd = HID_POWER_OFF; mctlmsg->ioc_count = 0; putnext(q, mp_lowpwr); /* save the full powr mblk */ mutex_enter(&hidp->hid_mutex); hidpm->hid_pm_pwrup = mp_fullpwr; } else { /* * Since we failed to allocate one * or more mblks, we fail attempt * to go into low power this time */ freemsg(mp_lowpwr); freemsg(mp_fullpwr); mutex_enter(&hidp->hid_mutex); return (USB_FAILURE); } } else { /* * Since we can't send an mblk up, * we fail this attempt to go to low power */ mutex_enter(&hidp->hid_mutex); return (USB_FAILURE); } } mutex_exit(&hidp->hid_mutex); /* Issue USB D3 command to the device here */ rval = usb_set_device_pwrlvl3(hidp->hid_dip); ASSERT(rval == USB_SUCCESS); mutex_enter(&hidp->hid_mutex); hidp->hid_dev_state = USB_DEV_PWRED_DOWN; hidpm->hid_current_power = USB_DEV_OS_PWR_OFF; /* FALLTHRU */ case USB_DEV_DISCONNECTED: case USB_DEV_SUSPENDED: case USB_DEV_PWRED_DOWN: default: break; } return (USB_SUCCESS); } /* ARGSUSED */ static int hid_pwrlvl1(hid_state_t *hidp) { int rval; /* Issue USB D2 command to the device here */ rval = usb_set_device_pwrlvl2(hidp->hid_dip); ASSERT(rval == USB_SUCCESS); return (USB_FAILURE); } /* ARGSUSED */ static int hid_pwrlvl2(hid_state_t *hidp) { int rval; rval = usb_set_device_pwrlvl1(hidp->hid_dip); ASSERT(rval == USB_SUCCESS); return (USB_FAILURE); } static int hid_pwrlvl3(hid_state_t *hidp) { hid_power_t *hidpm; int rval; struct iocblk *mctlmsg; mblk_t *mp; queue_t *q; hidpm = hidp->hid_pm; switch (hidp->hid_dev_state) { case USB_DEV_HID_POWER_CHANGE: case USB_DEV_PWRED_DOWN: /* Issue USB D0 command to the device here */ rval = usb_set_device_pwrlvl0(hidp->hid_dip); ASSERT(rval == USB_SUCCESS); if (HID_IS_OPEN(hidp)) { /* restart polling on intr pipe */ rval = hid_start_intr_polling(hidp); if (rval != USB_SUCCESS) { USB_DPRINTF_L2(PRINT_MASK_EVENTS, hidp->hid_log_handle, "unable to restart intr polling rval = %d", rval); return (USB_FAILURE); } /* Send an MCTL up indicating device in full power */ q = hidp->hid_inuse_rq; mp = hidpm->hid_pm_pwrup; hidpm->hid_pm_pwrup = NULL; mutex_exit(&hidp->hid_mutex); if (canputnext(q)) { mp->b_datap->db_type = M_CTL; mctlmsg = (struct iocblk *) mp->b_datap->db_base; mctlmsg->ioc_cmd = HID_FULL_POWER; mctlmsg->ioc_count = 0; putnext(q, mp); } else { freemsg(mp); } mutex_enter(&hidp->hid_mutex); } hidp->hid_dev_state = USB_DEV_ONLINE; hidpm->hid_current_power = USB_DEV_OS_FULL_PWR; /* FALLTHRU */ case USB_DEV_DISCONNECTED: case USB_DEV_SUSPENDED: case USB_DEV_ONLINE: return (USB_SUCCESS); default: USB_DPRINTF_L2(PRINT_MASK_EVENTS, hidp->hid_log_handle, "hid_pwrlvl3: Improper State"); return (USB_FAILURE); } } /* * hid_polled_input_init : * This routine calls down to the lower layers to initialize any state * information. This routine initializes the lower layers for input. */ static int hid_polled_input_init(hid_state_t *hidp) { USB_DPRINTF_L4(PRINT_MASK_ALL, hidp->hid_log_handle, "hid_polled_input_init"); /* * Call the lower layers to intialize any state information * that they will need to provide the polled characters. */ if (usb_console_input_init(hidp->hid_dip, hidp->hid_interrupt_pipe, &hidp->hid_polled_raw_buf, &hidp->hid_polled_console_info) != USB_SUCCESS) { /* * If for some reason the lower layers cannot initialized, then * bail. */ (void) hid_polled_input_fini(hidp); return (USB_FAILURE); } return (USB_SUCCESS); } /* * hid_polled_input_fini: * This routine is called when we are done using this device as an input * device. */ static int hid_polled_input_fini(hid_state_t *hidp) { USB_DPRINTF_L4(PRINT_MASK_ALL, hidp->hid_log_handle, "hid_polled_input_fini"); /* * Call the lower layers to free any state information * only if polled input has been initialised. */ if ((hidp->hid_polled_console_info) && (usb_console_input_fini(hidp->hid_polled_console_info) != USB_SUCCESS)) { return (USB_FAILURE); } hidp->hid_polled_console_info = NULL; return (USB_SUCCESS); } /* * hid_polled_input_enter: * This is the routine that is called in polled mode to save the USB * state information before using the USB keyboard as an input device. * This routine, and all of the routines that it calls, are responsible * for saving any state information so that it can be restored when * polling mode is over. */ static int /* ARGSUSED */ hid_polled_input_enter(hid_polled_handle_t hid_polled_inputp) { hid_state_t *hidp = (hid_state_t *)hid_polled_inputp; /* * Call the lower layers to tell them to save any state information. */ (void) usb_console_input_enter(hidp->hid_polled_console_info); return (USB_SUCCESS); } /* * hid_polled_read : * This is the routine that is called in polled mode when it wants to read * a character. We will call to the lower layers to see if there is any * input data available. If there is USB scancodes available, we will * give them back. */ static int hid_polled_read(hid_polled_handle_t hid_polled_input, uchar_t **buffer) { hid_state_t *hidp = (hid_state_t *)hid_polled_input; uint_t num_bytes; /* * Call the lower layers to get the character from the controller. * The lower layers will return the number of characters that * were put in the raw buffer. The address of the raw buffer * was passed down to the lower layers during hid_polled_init. */ if (usb_console_read(hidp->hid_polled_console_info, &num_bytes) != USB_SUCCESS) { return (0); } _NOTE(NO_COMPETING_THREADS_NOW); *buffer = hidp->hid_polled_raw_buf; _NOTE(COMPETING_THREADS_NOW); /* * Return the number of characters that were copied into the * polled buffer. */ return (num_bytes); } /* * hid_polled_input_exit : * This is the routine that is called in polled mode when it is giving up * control of the USB keyboard. This routine, and the lower layer routines * that it calls, are responsible for restoring the controller state to the * state it was in before polled mode. */ static int hid_polled_input_exit(hid_polled_handle_t hid_polled_inputp) { hid_state_t *hidp = (hid_state_t *)hid_polled_inputp; /* * Call the lower layers to restore any state information. */ (void) usb_console_input_exit(hidp->hid_polled_console_info); return (0); }