cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

udl_drv.h (3037B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 * Copyright (C) 2012 Red Hat
      4 *
      5 * based in parts on udlfb.c:
      6 * Copyright (C) 2009 Roberto De Ioris <roberto@unbit.it>
      7 * Copyright (C) 2009 Jaya Kumar <jayakumar.lkml@gmail.com>
      8 * Copyright (C) 2009 Bernie Thompson <bernie@plugable.com>
      9 */
     10
     11#ifndef UDL_DRV_H
     12#define UDL_DRV_H
     13
     14#include <linux/mm_types.h>
     15#include <linux/usb.h>
     16
     17#include <drm/drm_device.h>
     18#include <drm/drm_framebuffer.h>
     19#include <drm/drm_gem.h>
     20#include <drm/drm_simple_kms_helper.h>
     21
     22struct drm_mode_create_dumb;
     23
     24#define DRIVER_NAME		"udl"
     25#define DRIVER_DESC		"DisplayLink"
     26#define DRIVER_DATE		"20120220"
     27
     28#define DRIVER_MAJOR		0
     29#define DRIVER_MINOR		0
     30#define DRIVER_PATCHLEVEL	1
     31
     32struct udl_device;
     33
     34struct urb_node {
     35	struct list_head entry;
     36	struct udl_device *dev;
     37	struct delayed_work release_urb_work;
     38	struct urb *urb;
     39};
     40
     41struct urb_list {
     42	struct list_head list;
     43	spinlock_t lock;
     44	struct semaphore limit_sem;
     45	int available;
     46	int count;
     47	size_t size;
     48};
     49
     50struct udl_device {
     51	struct drm_device drm;
     52	struct device *dev;
     53	struct device *dmadev;
     54
     55	struct drm_simple_display_pipe display_pipe;
     56
     57	struct mutex gem_lock;
     58
     59	int sku_pixel_limit;
     60
     61	struct urb_list urbs;
     62
     63	char mode_buf[1024];
     64	uint32_t mode_buf_len;
     65};
     66
     67#define to_udl(x) container_of(x, struct udl_device, drm)
     68
     69static inline struct usb_device *udl_to_usb_device(struct udl_device *udl)
     70{
     71	return interface_to_usbdev(to_usb_interface(udl->drm.dev));
     72}
     73
     74/* modeset */
     75int udl_modeset_init(struct drm_device *dev);
     76struct drm_connector *udl_connector_init(struct drm_device *dev);
     77
     78struct urb *udl_get_urb(struct drm_device *dev);
     79
     80int udl_submit_urb(struct drm_device *dev, struct urb *urb, size_t len);
     81void udl_urb_completion(struct urb *urb);
     82
     83int udl_init(struct udl_device *udl);
     84
     85int udl_render_hline(struct drm_device *dev, int log_bpp, struct urb **urb_ptr,
     86		     const char *front, char **urb_buf_ptr,
     87		     u32 byte_offset, u32 device_byte_offset, u32 byte_width);
     88
     89int udl_drop_usb(struct drm_device *dev);
     90
     91#define CMD_WRITE_RAW8   "\xAF\x60" /**< 8 bit raw write command. */
     92#define CMD_WRITE_RL8    "\xAF\x61" /**< 8 bit run length command. */
     93#define CMD_WRITE_COPY8  "\xAF\x62" /**< 8 bit copy command. */
     94#define CMD_WRITE_RLX8   "\xAF\x63" /**< 8 bit extended run length command. */
     95
     96#define CMD_WRITE_RAW16  "\xAF\x68" /**< 16 bit raw write command. */
     97#define CMD_WRITE_RL16   "\xAF\x69" /**< 16 bit run length command. */
     98#define CMD_WRITE_COPY16 "\xAF\x6A" /**< 16 bit copy command. */
     99#define CMD_WRITE_RLX16  "\xAF\x6B" /**< 16 bit extended run length command. */
    100
    101/* On/Off for driving the DisplayLink framebuffer to the display */
    102#define UDL_REG_BLANK_MODE		0x1f
    103
    104#define UDL_BLANK_MODE_ON		0x00 /* hsync and vsync on, visible */
    105#define UDL_BLANK_MODE_BLANKED		0x01 /* hsync and vsync on, blanked */
    106#define UDL_BLANK_MODE_VSYNC_OFF	0x03 /* vsync off, blanked */
    107#define UDL_BLANK_MODE_HSYNC_OFF	0x05 /* hsync off, blanked */
    108#define UDL_BLANK_MODE_POWERDOWN	0x07 /* powered off; requires modeset */
    109
    110#endif