vasilito
dc68054305
- Restore 29 recipe symlinks (libdrm, qtbase, dbus, sddm, pipewire, etc.) - Restore 33 patches (KDE, libdrm, mesa, pipewire, sddm, wireplumber) - Restore 20+ local/scripts (audit, lint, test, build helpers) - Restore src/cook/scheduler.rs, status.rs, gnu-config/ - Restore scripts/patch-inclusion-gate.sh, run_mini1.sh, validate-collision-log.sh - Recover TLC source from HEAD (was overwritten by 0.2.3 checkout) - Recover 11 local/docs plans from HEAD (were overwritten) - Recover qt6-wayland-smoke symlink from HEAD - Fix MOTD: remove garbled ASCII art, use clean text - Update version: 0.2.0 -> 0.2.4 in os-release, motd, config - Reduce filesystem_size: 1536 -> 512 MiB - Add ABSOLUTE RULE to AGENTS.md: never delete/ignore packages - Reduce pcid scheme log verbosity: info -> debug
112 lines
3.3 KiB
C
112 lines
3.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* xHCI host controller sideband support
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*
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* Copyright (c) 2023-2025, Intel Corporation.
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*
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* Author: Mathias Nyman <mathias.nyman@linux.intel.com>
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*/
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#ifndef __LINUX_XHCI_SIDEBAND_H
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#define __LINUX_XHCI_SIDEBAND_H
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#include <linux/scatterlist.h>
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#include <linux/usb.h>
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#include <linux/usb/hcd.h>
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#define EP_CTX_PER_DEV 31 /* FIXME defined twice, from xhci.h */
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struct xhci_sideband;
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enum xhci_sideband_type {
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XHCI_SIDEBAND_AUDIO,
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XHCI_SIDEBAND_VENDOR,
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};
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enum xhci_sideband_notify_type {
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XHCI_SIDEBAND_XFER_RING_FREE,
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};
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/**
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* struct xhci_sideband_event - sideband event
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* @type: notifier type
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* @evt_data: event data
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*/
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struct xhci_sideband_event {
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enum xhci_sideband_notify_type type;
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void *evt_data;
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};
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/**
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* struct xhci_sideband - representation of a sideband accessed usb device.
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* @xhci: The xhci host controller the usb device is connected to
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* @vdev: the usb device accessed via sideband
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* @eps: array of endpoints controlled via sideband
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* @ir: event handling and buffer for sideband accessed device
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* @type: xHCI sideband type
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* @mutex: mutex for sideband operations
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* @intf: USB sideband client interface
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* @notify_client: callback for xHCI sideband sequences
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*
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* FIXME usb device accessed via sideband Keeping track of sideband accessed usb devices.
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*/
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struct xhci_sideband {
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struct xhci_hcd *xhci;
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struct xhci_virt_device *vdev;
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struct xhci_virt_ep *eps[EP_CTX_PER_DEV];
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struct xhci_interrupter *ir;
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enum xhci_sideband_type type;
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/* Synchronizing xHCI sideband operations with client drivers operations */
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struct mutex mutex;
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struct usb_interface *intf;
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int (*notify_client)(struct usb_interface *intf,
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struct xhci_sideband_event *evt);
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};
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struct xhci_sideband *
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xhci_sideband_register(struct usb_interface *intf, enum xhci_sideband_type type,
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int (*notify_client)(struct usb_interface *intf,
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struct xhci_sideband_event *evt));
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void
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xhci_sideband_unregister(struct xhci_sideband *sb);
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int
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xhci_sideband_add_endpoint(struct xhci_sideband *sb,
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struct usb_host_endpoint *host_ep);
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int
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xhci_sideband_remove_endpoint(struct xhci_sideband *sb,
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struct usb_host_endpoint *host_ep);
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int
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xhci_sideband_stop_endpoint(struct xhci_sideband *sb,
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struct usb_host_endpoint *host_ep);
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struct sg_table *
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xhci_sideband_get_endpoint_buffer(struct xhci_sideband *sb,
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struct usb_host_endpoint *host_ep);
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struct sg_table *
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xhci_sideband_get_event_buffer(struct xhci_sideband *sb);
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#if IS_ENABLED(CONFIG_USB_XHCI_SIDEBAND)
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bool xhci_sideband_check(struct usb_hcd *hcd);
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#else
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static inline bool xhci_sideband_check(struct usb_hcd *hcd)
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{ return false; }
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#endif /* IS_ENABLED(CONFIG_USB_XHCI_SIDEBAND) */
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int
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xhci_sideband_create_interrupter(struct xhci_sideband *sb, int num_seg,
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bool ip_autoclear, u32 imod_interval, int intr_num);
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void
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xhci_sideband_remove_interrupter(struct xhci_sideband *sb);
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int
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xhci_sideband_interrupter_id(struct xhci_sideband *sb);
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#if IS_ENABLED(CONFIG_USB_XHCI_SIDEBAND)
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void xhci_sideband_notify_ep_ring_free(struct xhci_sideband *sb,
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unsigned int ep_index);
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#else
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static inline void xhci_sideband_notify_ep_ring_free(struct xhci_sideband *sb,
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unsigned int ep_index)
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{ }
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#endif /* IS_ENABLED(CONFIG_USB_XHCI_SIDEBAND) */
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#endif /* __LINUX_XHCI_SIDEBAND_H */
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