--- /dev/null
+/*
+ * Copyright (C) 2012 Red Hat
+ *
+ * based in parts on udlfb.c:
+ * Copyright (C) 2009 Roberto De Ioris <roberto@unbit.it>
+ * Copyright (C) 2009 Jaya Kumar <jayakumar.lkml@gmail.com>
+ * Copyright (C) 2009 Bernie Thompson <bernie@plugable.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License v2. See the file COPYING in the main directory of this archive for
+ * more details.
+ */
+
+#ifndef UDL_DRV_H
+#define UDL_DRV_H
+
+#include <linux/usb.h>
+#include <drm/drm_gem.h>
+
+#define DRIVER_NAME "udl"
+#define DRIVER_DESC "DisplayLink"
+#define DRIVER_DATE "20120220"
+
+#define DRIVER_MAJOR 0
+#define DRIVER_MINOR 0
+#define DRIVER_PATCHLEVEL 1
+
+#define UDL_BO_CACHEABLE (1 << 0)
+#define UDL_BO_WC (1 << 1)
+
+struct udl_device;
+
+struct urb_node {
+ struct list_head entry;
+ struct udl_device *dev;
+ struct delayed_work release_urb_work;
+ struct urb *urb;
+};
+
+struct urb_list {
+ struct list_head list;
+ spinlock_t lock;
+ struct semaphore limit_sem;
+ int available;
+ int count;
+ size_t size;
+};
+
+struct udl_fbdev;
+
+struct udl_device {
+ struct device *dev;
+ struct drm_device *ddev;
+ struct usb_device *udev;
+
+ int sku_pixel_limit;
+
+ struct urb_list urbs;
+ atomic_t lost_pixels; /* 1 = a render op failed. Need screen refresh */
+
+ struct udl_fbdev *fbdev;
+ char mode_buf[1024];
+ uint32_t mode_buf_len;
+ atomic_t bytes_rendered; /* raw pixel-bytes driver asked to render */
+ atomic_t bytes_identical; /* saved effort with backbuffer comparison */
+ atomic_t bytes_sent; /* to usb, after compression including overhead */
+ atomic_t cpu_kcycles_used; /* transpired during pixel processing */
+};
+
+struct udl_gem_object {
+ struct drm_gem_object base;
+ struct page **pages;
+ void *vmapping;
+ struct sg_table *sg;
+ unsigned int flags;
+};
+
+#define to_udl_bo(x) container_of(x, struct udl_gem_object, base)
+
+struct udl_framebuffer {
+ struct drm_framebuffer base;
+ struct udl_gem_object *obj;
+ bool active_16; /* active on the 16-bit channel */
+ int x1, y1, x2, y2; /* dirty rect */
+ spinlock_t dirty_lock;
+};
+
+#define to_udl_fb(x) container_of(x, struct udl_framebuffer, base)
+
+/* modeset */
+int udl_modeset_init(struct drm_device *dev);
+void udl_modeset_cleanup(struct drm_device *dev);
+int udl_connector_init(struct drm_device *dev, struct drm_encoder *encoder);
+
+struct drm_encoder *udl_encoder_init(struct drm_device *dev);
+
+struct urb *udl_get_urb(struct drm_device *dev);
+
+int udl_submit_urb(struct drm_device *dev, struct urb *urb, size_t len);
+void udl_urb_completion(struct urb *urb);
+
+int udl_driver_load(struct drm_device *dev, unsigned long flags);
+int udl_driver_unload(struct drm_device *dev);
+
+int udl_fbdev_init(struct drm_device *dev);
+void udl_fbdev_cleanup(struct drm_device *dev);
+void udl_fbdev_unplug(struct drm_device *dev);
+struct drm_framebuffer *
+udl_fb_user_fb_create(struct drm_device *dev,
+ struct drm_file *file,
+ struct drm_mode_fb_cmd2 *mode_cmd);
+
+int udl_render_hline(struct drm_device *dev, int bpp, struct urb **urb_ptr,
+ const char *front, char **urb_buf_ptr,
+ u32 byte_offset, u32 device_byte_offset, u32 byte_width,
+ int *ident_ptr, int *sent_ptr);
+
+int udl_dumb_create(struct drm_file *file_priv,
+ struct drm_device *dev,
+ struct drm_mode_create_dumb *args);
+int udl_gem_mmap(struct drm_file *file_priv, struct drm_device *dev,
+ uint32_t handle, uint64_t *offset);
+
+void udl_gem_free_object(struct drm_gem_object *gem_obj);
+struct udl_gem_object *udl_gem_alloc_object(struct drm_device *dev,
+ size_t size);
+struct dma_buf *udl_gem_prime_export(struct drm_device *dev,
+ struct drm_gem_object *obj, int flags);
+struct drm_gem_object *udl_gem_prime_import(struct drm_device *dev,
+ struct dma_buf *dma_buf);
+
+int udl_gem_get_pages(struct udl_gem_object *obj);
+void udl_gem_put_pages(struct udl_gem_object *obj);
+int udl_gem_vmap(struct udl_gem_object *obj);
+void udl_gem_vunmap(struct udl_gem_object *obj);
+int udl_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
+int udl_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf);
+
+int udl_handle_damage(struct udl_framebuffer *fb, int x, int y,
+ int width, int height);
+
+int udl_drop_usb(struct drm_device *dev);
+
+#define CMD_WRITE_RAW8 "\xAF\x60" /**< 8 bit raw write command. */
+#define CMD_WRITE_RL8 "\xAF\x61" /**< 8 bit run length command. */
+#define CMD_WRITE_COPY8 "\xAF\x62" /**< 8 bit copy command. */
+#define CMD_WRITE_RLX8 "\xAF\x63" /**< 8 bit extended run length command. */
+
+#define CMD_WRITE_RAW16 "\xAF\x68" /**< 16 bit raw write command. */
+#define CMD_WRITE_RL16 "\xAF\x69" /**< 16 bit run length command. */
+#define CMD_WRITE_COPY16 "\xAF\x6A" /**< 16 bit copy command. */
+#define CMD_WRITE_RLX16 "\xAF\x6B" /**< 16 bit extended run length command. */
+
+#endif
Code Review / kvmfornfv.git / blobdiff