Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
David Vrabel | 1386 | 97.74% | 5 | 35.71% |
Peter Chen | 9 | 0.63% | 1 | 7.14% |
Alan Stern | 7 | 0.49% | 1 | 7.14% |
Colin Ian King | 5 | 0.35% | 1 | 7.14% |
Dan Carpenter | 4 | 0.28% | 1 | 7.14% |
Paul Gortmaker | 3 | 0.21% | 1 | 7.14% |
Greg Kroah-Hartman | 2 | 0.14% | 2 | 14.29% |
Julia Lawall | 1 | 0.07% | 1 | 7.14% |
Namhyung Kim | 1 | 0.07% | 1 | 7.14% |
Total | 1418 | 14 |
// SPDX-License-Identifier: GPL-2.0 /* * Wireless Host Controller (WHC) driver. * * Copyright (C) 2007 Cambridge Silicon Radio Ltd. */ #include <linux/kernel.h> #include <linux/init.h> #include <linux/module.h> #include <linux/uwb/umc.h> #include "../../wusbcore/wusbhc.h" #include "whcd.h" /* * One time initialization. * * Nothing to do here. */ static int whc_reset(struct usb_hcd *usb_hcd) { return 0; } /* * Start the wireless host controller. * * Start device notification. * * Put hc into run state, set DNTS parameters. */ static int whc_start(struct usb_hcd *usb_hcd) { struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd); struct whc *whc = wusbhc_to_whc(wusbhc); u8 bcid; int ret; mutex_lock(&wusbhc->mutex); le_writel(WUSBINTR_GEN_CMD_DONE | WUSBINTR_HOST_ERR | WUSBINTR_ASYNC_SCHED_SYNCED | WUSBINTR_DNTS_INT | WUSBINTR_ERR_INT | WUSBINTR_INT, whc->base + WUSBINTR); /* set cluster ID */ bcid = wusb_cluster_id_get(); ret = whc_set_cluster_id(whc, bcid); if (ret < 0) goto out; wusbhc->cluster_id = bcid; /* start HC */ whc_write_wusbcmd(whc, WUSBCMD_RUN, WUSBCMD_RUN); usb_hcd->uses_new_polling = 1; set_bit(HCD_FLAG_POLL_RH, &usb_hcd->flags); usb_hcd->state = HC_STATE_RUNNING; out: mutex_unlock(&wusbhc->mutex); return ret; } /* * Stop the wireless host controller. * * Stop device notification. * * Wait for pending transfer to stop? Put hc into stop state? */ static void whc_stop(struct usb_hcd *usb_hcd) { struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd); struct whc *whc = wusbhc_to_whc(wusbhc); mutex_lock(&wusbhc->mutex); /* stop HC */ le_writel(0, whc->base + WUSBINTR); whc_write_wusbcmd(whc, WUSBCMD_RUN, 0); whci_wait_for(&whc->umc->dev, whc->base + WUSBSTS, WUSBSTS_HCHALTED, WUSBSTS_HCHALTED, 100, "HC to halt"); wusb_cluster_id_put(wusbhc->cluster_id); mutex_unlock(&wusbhc->mutex); } static int whc_get_frame_number(struct usb_hcd *usb_hcd) { /* Frame numbers are not applicable to WUSB. */ return -ENOSYS; } /* * Queue an URB to the ASL or PZL */ static int whc_urb_enqueue(struct usb_hcd *usb_hcd, struct urb *urb, gfp_t mem_flags) { struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd); struct whc *whc = wusbhc_to_whc(wusbhc); int ret; switch (usb_pipetype(urb->pipe)) { case PIPE_INTERRUPT: ret = pzl_urb_enqueue(whc, urb, mem_flags); break; case PIPE_ISOCHRONOUS: dev_err(&whc->umc->dev, "isochronous transfers unsupported\n"); ret = -ENOTSUPP; break; case PIPE_CONTROL: case PIPE_BULK: default: ret = asl_urb_enqueue(whc, urb, mem_flags); break; } return ret; } /* * Remove a queued URB from the ASL or PZL. */ static int whc_urb_dequeue(struct usb_hcd *usb_hcd, struct urb *urb, int status) { struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd); struct whc *whc = wusbhc_to_whc(wusbhc); int ret; switch (usb_pipetype(urb->pipe)) { case PIPE_INTERRUPT: ret = pzl_urb_dequeue(whc, urb, status); break; case PIPE_ISOCHRONOUS: ret = -ENOTSUPP; break; case PIPE_CONTROL: case PIPE_BULK: default: ret = asl_urb_dequeue(whc, urb, status); break; } return ret; } /* * Wait for all URBs to the endpoint to be completed, then delete the * qset. */ static void whc_endpoint_disable(struct usb_hcd *usb_hcd, struct usb_host_endpoint *ep) { struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd); struct whc *whc = wusbhc_to_whc(wusbhc); struct whc_qset *qset; qset = ep->hcpriv; if (qset) { ep->hcpriv = NULL; if (usb_endpoint_xfer_bulk(&ep->desc) || usb_endpoint_xfer_control(&ep->desc)) asl_qset_delete(whc, qset); else pzl_qset_delete(whc, qset); } } static void whc_endpoint_reset(struct usb_hcd *usb_hcd, struct usb_host_endpoint *ep) { struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd); struct whc *whc = wusbhc_to_whc(wusbhc); struct whc_qset *qset; unsigned long flags; spin_lock_irqsave(&whc->lock, flags); qset = ep->hcpriv; if (qset) { qset->remove = 1; qset->reset = 1; if (usb_endpoint_xfer_bulk(&ep->desc) || usb_endpoint_xfer_control(&ep->desc)) queue_work(whc->workqueue, &whc->async_work); else queue_work(whc->workqueue, &whc->periodic_work); } spin_unlock_irqrestore(&whc->lock, flags); } static const struct hc_driver whc_hc_driver = { .description = "whci-hcd", .product_desc = "Wireless host controller", .hcd_priv_size = sizeof(struct whc) - sizeof(struct usb_hcd), .irq = whc_int_handler, .flags = HCD_USB2, .reset = whc_reset, .start = whc_start, .stop = whc_stop, .get_frame_number = whc_get_frame_number, .urb_enqueue = whc_urb_enqueue, .urb_dequeue = whc_urb_dequeue, .endpoint_disable = whc_endpoint_disable, .endpoint_reset = whc_endpoint_reset, .hub_status_data = wusbhc_rh_status_data, .hub_control = wusbhc_rh_control, .start_port_reset = wusbhc_rh_start_port_reset, }; static int whc_probe(struct umc_dev *umc) { int ret; struct usb_hcd *usb_hcd; struct wusbhc *wusbhc; struct whc *whc; struct device *dev = &umc->dev; usb_hcd = usb_create_hcd(&whc_hc_driver, dev, "whci"); if (usb_hcd == NULL) { dev_err(dev, "unable to create hcd\n"); return -ENOMEM; } usb_hcd->wireless = 1; usb_hcd->self.sg_tablesize = 2048; /* somewhat arbitrary */ wusbhc = usb_hcd_to_wusbhc(usb_hcd); whc = wusbhc_to_whc(wusbhc); whc->umc = umc; ret = whc_init(whc); if (ret) goto error_whc_init; wusbhc->dev = dev; wusbhc->uwb_rc = uwb_rc_get_by_grandpa(umc->dev.parent); if (!wusbhc->uwb_rc) { ret = -ENODEV; dev_err(dev, "cannot get radio controller\n"); goto error_uwb_rc; } if (whc->n_devices > USB_MAXCHILDREN) { dev_warn(dev, "USB_MAXCHILDREN too low for WUSB adapter (%u ports)\n", whc->n_devices); wusbhc->ports_max = USB_MAXCHILDREN; } else wusbhc->ports_max = whc->n_devices; wusbhc->mmcies_max = whc->n_mmc_ies; wusbhc->start = whc_wusbhc_start; wusbhc->stop = whc_wusbhc_stop; wusbhc->mmcie_add = whc_mmcie_add; wusbhc->mmcie_rm = whc_mmcie_rm; wusbhc->dev_info_set = whc_dev_info_set; wusbhc->bwa_set = whc_bwa_set; wusbhc->set_num_dnts = whc_set_num_dnts; wusbhc->set_ptk = whc_set_ptk; wusbhc->set_gtk = whc_set_gtk; ret = wusbhc_create(wusbhc); if (ret) goto error_wusbhc_create; ret = usb_add_hcd(usb_hcd, whc->umc->irq, IRQF_SHARED); if (ret) { dev_err(dev, "cannot add HCD: %d\n", ret); goto error_usb_add_hcd; } device_wakeup_enable(usb_hcd->self.controller); ret = wusbhc_b_create(wusbhc); if (ret) { dev_err(dev, "WUSBHC phase B setup failed: %d\n", ret); goto error_wusbhc_b_create; } whc_dbg_init(whc); return 0; error_wusbhc_b_create: usb_remove_hcd(usb_hcd); error_usb_add_hcd: wusbhc_destroy(wusbhc); error_wusbhc_create: uwb_rc_put(wusbhc->uwb_rc); error_uwb_rc: whc_clean_up(whc); error_whc_init: usb_put_hcd(usb_hcd); return ret; } static void whc_remove(struct umc_dev *umc) { struct usb_hcd *usb_hcd = dev_get_drvdata(&umc->dev); struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd); struct whc *whc = wusbhc_to_whc(wusbhc); if (usb_hcd) { whc_dbg_clean_up(whc); wusbhc_b_destroy(wusbhc); usb_remove_hcd(usb_hcd); wusbhc_destroy(wusbhc); uwb_rc_put(wusbhc->uwb_rc); whc_clean_up(whc); usb_put_hcd(usb_hcd); } } static struct umc_driver whci_hc_driver = { .name = "whci-hcd", .cap_id = UMC_CAP_ID_WHCI_WUSB_HC, .probe = whc_probe, .remove = whc_remove, }; static int __init whci_hc_driver_init(void) { return umc_driver_register(&whci_hc_driver); } module_init(whci_hc_driver_init); static void __exit whci_hc_driver_exit(void) { umc_driver_unregister(&whci_hc_driver); } module_exit(whci_hc_driver_exit); /* PCI device ID's that we handle (so it gets loaded) */ static struct pci_device_id __used whci_hcd_id_table[] = { { PCI_DEVICE_CLASS(PCI_CLASS_WIRELESS_WHCI, ~0) }, { /* empty last entry */ } }; MODULE_DEVICE_TABLE(pci, whci_hcd_id_table); MODULE_DESCRIPTION("WHCI Wireless USB host controller driver"); MODULE_AUTHOR("Cambridge Silicon Radio Ltd."); MODULE_LICENSE("GPL");
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