diff options
Diffstat (limited to 'drivers/usb/host/whci/hcd.c')
-rw-r--r-- | drivers/usb/host/whci/hcd.c | 356 |
1 files changed, 0 insertions, 356 deletions
diff --git a/drivers/usb/host/whci/hcd.c b/drivers/usb/host/whci/hcd.c deleted file mode 100644 index 8af9dcfea127..000000000000 --- a/drivers/usb/host/whci/hcd.c +++ /dev/null @@ -1,356 +0,0 @@ -// 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"); |