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linux/drivers/gpu/drm/qxl/qxl_drv.h
Gerd Hoffmann 62676d10b4 qxl: alloc & use shadow for dumb buffers 
This patch changes the way the primary surface is used for dumb
framebuffers.  Instead of configuring the bo itself as primary surface
a shadow bo is created and used instead.  Framebuffers can share the
shadow bo in case they have the same format and resolution.

On atomic plane updates we don't have to update the primary surface in
case we pageflip from one framebuffer to another framebuffer which
shares the same shadow.  This in turn avoids the flicker caused by the
primary-destroy + primary-create cycle, which is very annonying when
running wayland on qxl.

The qxl driver never actually writes to the shadow bo.  It sends qxl
blit commands which update it though, and the spice server might
actually execute them (and thereby write to the shadow) in case the
local rendering is kicked for some reason.  This happens for example in
case qemu is asked to write out a dump of the guest display (screendump
monitor command).

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20171019062150.28090-3-kraxel@redhat.com
2017-10-23 08:23:11 +02:00

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/*
* Copyright 2013 Red Hat Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: Dave Airlie
* Alon Levy
*/
#ifndef QXL_DRV_H
#define QXL_DRV_H
/*
* Definitions taken from spice-protocol, plus kernel driver specific bits.
*/
#include <linux/dma-fence.h>
#include <linux/workqueue.h>
#include <linux/firmware.h>
#include <linux/platform_device.h>
#include <drm/drm_crtc.h>
#include <drm/drm_encoder.h>
#include <drm/drm_gem.h>
#include <drm/drmP.h>
#include <drm/ttm/ttm_bo_api.h>
#include <drm/ttm/ttm_bo_driver.h>
/* just for ttm_validate_buffer */
#include <drm/ttm/ttm_execbuf_util.h>
#include <drm/ttm/ttm_module.h>
#include <drm/ttm/ttm_placement.h>
#include <drm/qxl_drm.h>
#include "qxl_dev.h"
#define DRIVER_AUTHOR "Dave Airlie"
#define DRIVER_NAME "qxl"
#define DRIVER_DESC "RH QXL"
#define DRIVER_DATE "20120117"
#define DRIVER_MAJOR 0
#define DRIVER_MINOR 1
#define DRIVER_PATCHLEVEL 0
#define QXL_DEBUGFS_MAX_COMPONENTS 32
extern int qxl_num_crtc;
extern int qxl_max_ioctls;
#define DRM_FILE_OFFSET 0x100000000ULL
#define DRM_FILE_PAGE_OFFSET (DRM_FILE_OFFSET >> PAGE_SHIFT)
#define QXL_INTERRUPT_MASK (\
QXL_INTERRUPT_DISPLAY |\
QXL_INTERRUPT_CURSOR |\
QXL_INTERRUPT_IO_CMD |\
QXL_INTERRUPT_CLIENT_MONITORS_CONFIG)
struct qxl_bo {
/* Protected by gem.mutex */
struct list_head list;
/* Protected by tbo.reserved */
struct ttm_place placements[3];
struct ttm_placement placement;
struct ttm_buffer_object tbo;
struct ttm_bo_kmap_obj kmap;
unsigned pin_count;
void *kptr;
int type;
/* Constant after initialization */
struct drm_gem_object gem_base;
bool is_primary; /* is this now a primary surface */
bool is_dumb;
struct qxl_bo *shadow;
bool hw_surf_alloc;
struct qxl_surface surf;
uint32_t surface_id;
struct qxl_release *surf_create;
};
#define gem_to_qxl_bo(gobj) container_of((gobj), struct qxl_bo, gem_base)
#define to_qxl_bo(tobj) container_of((tobj), struct qxl_bo, tbo)
struct qxl_gem {
struct mutex mutex;
struct list_head objects;
};
struct qxl_bo_list {
struct ttm_validate_buffer tv;
};
struct qxl_crtc {
struct drm_crtc base;
int index;
};
struct qxl_output {
int index;
struct drm_connector base;
struct drm_encoder enc;
};
struct qxl_framebuffer {
struct drm_framebuffer base;
struct drm_gem_object *obj;
};
#define to_qxl_crtc(x) container_of(x, struct qxl_crtc, base)
#define drm_connector_to_qxl_output(x) container_of(x, struct qxl_output, base)
#define drm_encoder_to_qxl_output(x) container_of(x, struct qxl_output, enc)
#define to_qxl_framebuffer(x) container_of(x, struct qxl_framebuffer, base)
struct qxl_mman {
struct ttm_bo_global_ref bo_global_ref;
struct drm_global_reference mem_global_ref;
bool mem_global_referenced;
struct ttm_bo_device bdev;
};
struct qxl_mode_info {
bool mode_config_initialized;
/* pointer to fbdev info structure */
struct qxl_fbdev *qfbdev;
};
struct qxl_memslot {
uint8_t generation;
uint64_t start_phys_addr;
uint64_t end_phys_addr;
uint64_t high_bits;
};
enum {
QXL_RELEASE_DRAWABLE,
QXL_RELEASE_SURFACE_CMD,
QXL_RELEASE_CURSOR_CMD,
};
/* drm_ prefix to differentiate from qxl_release_info in
* spice-protocol/qxl_dev.h */
#define QXL_MAX_RES 96
struct qxl_release {
struct dma_fence base;
int id;
int type;
uint32_t release_offset;
uint32_t surface_release_id;
struct ww_acquire_ctx ticket;
struct list_head bos;
};
struct qxl_drm_chunk {
struct list_head head;
struct qxl_bo *bo;
};
struct qxl_drm_image {
struct qxl_bo *bo;
struct list_head chunk_list;
};
struct qxl_fb_image {
struct qxl_device *qdev;
uint32_t pseudo_palette[16];
struct fb_image fb_image;
uint32_t visual;
};
struct qxl_draw_fill {
struct qxl_device *qdev;
struct qxl_rect rect;
uint32_t color;
uint16_t rop;
};
/*
* Debugfs
*/
struct qxl_debugfs {
struct drm_info_list *files;
unsigned num_files;
};
int qxl_debugfs_add_files(struct qxl_device *rdev,
struct drm_info_list *files,
unsigned nfiles);
int qxl_debugfs_fence_init(struct qxl_device *rdev);
struct qxl_device;
struct qxl_device {
struct drm_device ddev;
resource_size_t vram_base, vram_size;
resource_size_t surfaceram_base, surfaceram_size;
resource_size_t rom_base, rom_size;
struct qxl_rom *rom;
struct qxl_mode *modes;
struct qxl_bo *monitors_config_bo;
struct qxl_monitors_config *monitors_config;
/* last received client_monitors_config */
struct qxl_monitors_config *client_monitors_config;
int io_base;
void *ram;
struct qxl_mman mman;
struct qxl_gem gem;
struct qxl_mode_info mode_info;
struct fb_info *fbdev_info;
struct qxl_framebuffer *fbdev_qfb;
void *ram_physical;
struct qxl_ring *release_ring;
struct qxl_ring *command_ring;
struct qxl_ring *cursor_ring;
struct qxl_ram_header *ram_header;
bool primary_created;
struct qxl_memslot *mem_slots;
uint8_t n_mem_slots;
uint8_t main_mem_slot;
uint8_t surfaces_mem_slot;
uint8_t slot_id_bits;
uint8_t slot_gen_bits;
uint64_t va_slot_mask;
spinlock_t release_lock;
struct idr release_idr;
uint32_t release_seqno;
spinlock_t release_idr_lock;
struct mutex async_io_mutex;
unsigned int last_sent_io_cmd;
/* interrupt handling */
atomic_t irq_received;
atomic_t irq_received_display;
atomic_t irq_received_cursor;
atomic_t irq_received_io_cmd;
unsigned irq_received_error;
wait_queue_head_t display_event;
wait_queue_head_t cursor_event;
wait_queue_head_t io_cmd_event;
struct work_struct client_monitors_config_work;
/* debugfs */
struct qxl_debugfs debugfs[QXL_DEBUGFS_MAX_COMPONENTS];
unsigned debugfs_count;
struct mutex update_area_mutex;
struct idr surf_id_idr;
spinlock_t surf_id_idr_lock;
int last_alloced_surf_id;
struct mutex surf_evict_mutex;
struct io_mapping *vram_mapping;
struct io_mapping *surface_mapping;
/* */
struct mutex release_mutex;
struct qxl_bo *current_release_bo[3];
int current_release_bo_offset[3];
struct work_struct gc_work;
struct drm_property *hotplug_mode_update_property;
int monitors_config_width;
int monitors_config_height;
};
/* forward declaration for QXL_INFO_IO */
__printf(2,3) void qxl_io_log(struct qxl_device *qdev, const char *fmt, ...);
extern const struct drm_ioctl_desc qxl_ioctls[];
extern int qxl_max_ioctl;
int qxl_device_init(struct qxl_device *qdev, struct drm_driver *drv,
struct pci_dev *pdev);
void qxl_device_fini(struct qxl_device *qdev);
int qxl_modeset_init(struct qxl_device *qdev);
void qxl_modeset_fini(struct qxl_device *qdev);
int qxl_bo_init(struct qxl_device *qdev);
void qxl_bo_fini(struct qxl_device *qdev);
void qxl_reinit_memslots(struct qxl_device *qdev);
int qxl_surf_evict(struct qxl_device *qdev);
int qxl_vram_evict(struct qxl_device *qdev);
struct qxl_ring *qxl_ring_create(struct qxl_ring_header *header,
int element_size,
int n_elements,
int prod_notify,
bool set_prod_notify,
wait_queue_head_t *push_event);
void qxl_ring_free(struct qxl_ring *ring);
void qxl_ring_init_hdr(struct qxl_ring *ring);
int qxl_check_idle(struct qxl_ring *ring);
static inline void *
qxl_fb_virtual_address(struct qxl_device *qdev, unsigned long physical)
{
DRM_DEBUG_DRIVER("not implemented (%lu)\n", physical);
return 0;
}
static inline uint64_t
qxl_bo_physical_address(struct qxl_device *qdev, struct qxl_bo *bo,
unsigned long offset)
{
int slot_id = bo->type == QXL_GEM_DOMAIN_VRAM ? qdev->main_mem_slot : qdev->surfaces_mem_slot;
struct qxl_memslot *slot = &(qdev->mem_slots[slot_id]);
/* TODO - need to hold one of the locks to read tbo.offset */
return slot->high_bits | (bo->tbo.offset + offset);
}
/* qxl_fb.c */
#define QXLFB_CONN_LIMIT 1
int qxl_fbdev_init(struct qxl_device *qdev);
void qxl_fbdev_fini(struct qxl_device *qdev);
int qxl_get_handle_for_primary_fb(struct qxl_device *qdev,
struct drm_file *file_priv,
uint32_t *handle);
void qxl_fbdev_set_suspend(struct qxl_device *qdev, int state);
/* qxl_display.c */
void qxl_user_framebuffer_destroy(struct drm_framebuffer *fb);
int
qxl_framebuffer_init(struct drm_device *dev,
struct qxl_framebuffer *rfb,
const struct drm_mode_fb_cmd2 *mode_cmd,
struct drm_gem_object *obj,
const struct drm_framebuffer_funcs *funcs);
void qxl_display_read_client_monitors_config(struct qxl_device *qdev);
int qxl_create_monitors_object(struct qxl_device *qdev);
int qxl_destroy_monitors_object(struct qxl_device *qdev);
/* qxl_gem.c */
void qxl_gem_init(struct qxl_device *qdev);
void qxl_gem_fini(struct qxl_device *qdev);
int qxl_gem_object_create(struct qxl_device *qdev, int size,
int alignment, int initial_domain,
bool discardable, bool kernel,
struct qxl_surface *surf,
struct drm_gem_object **obj);
int qxl_gem_object_create_with_handle(struct qxl_device *qdev,
struct drm_file *file_priv,
u32 domain,
size_t size,
struct qxl_surface *surf,
struct qxl_bo **qobj,
uint32_t *handle);
void qxl_gem_object_free(struct drm_gem_object *gobj);
int qxl_gem_object_open(struct drm_gem_object *obj, struct drm_file *file_priv);
void qxl_gem_object_close(struct drm_gem_object *obj,
struct drm_file *file_priv);
void qxl_bo_force_delete(struct qxl_device *qdev);
int qxl_bo_kmap(struct qxl_bo *bo, void **ptr);
/* qxl_dumb.c */
int qxl_mode_dumb_create(struct drm_file *file_priv,
struct drm_device *dev,
struct drm_mode_create_dumb *args);
int qxl_mode_dumb_mmap(struct drm_file *filp,
struct drm_device *dev,
uint32_t handle, uint64_t *offset_p);
/* qxl ttm */
int qxl_ttm_init(struct qxl_device *qdev);
void qxl_ttm_fini(struct qxl_device *qdev);
int qxl_mmap(struct file *filp, struct vm_area_struct *vma);
/* qxl image */
int qxl_image_init(struct qxl_device *qdev,
struct qxl_release *release,
struct qxl_drm_image *dimage,
const uint8_t *data,
int x, int y, int width, int height,
int depth, int stride);
int
qxl_image_alloc_objects(struct qxl_device *qdev,
struct qxl_release *release,
struct qxl_drm_image **image_ptr,
int height, int stride);
void qxl_image_free_objects(struct qxl_device *qdev, struct qxl_drm_image *dimage);
void qxl_update_screen(struct qxl_device *qxl);
/* qxl io operations (qxl_cmd.c) */
void qxl_io_create_primary(struct qxl_device *qdev,
unsigned offset,
struct qxl_bo *bo);
void qxl_io_destroy_primary(struct qxl_device *qdev);
void qxl_io_memslot_add(struct qxl_device *qdev, uint8_t id);
void qxl_io_notify_oom(struct qxl_device *qdev);
int qxl_io_update_area(struct qxl_device *qdev, struct qxl_bo *surf,
const struct qxl_rect *area);
void qxl_io_reset(struct qxl_device *qdev);
void qxl_io_monitors_config(struct qxl_device *qdev);
int qxl_ring_push(struct qxl_ring *ring, const void *new_elt, bool interruptible);
void qxl_io_flush_release(struct qxl_device *qdev);
void qxl_io_flush_surfaces(struct qxl_device *qdev);
union qxl_release_info *qxl_release_map(struct qxl_device *qdev,
struct qxl_release *release);
void qxl_release_unmap(struct qxl_device *qdev,
struct qxl_release *release,
union qxl_release_info *info);
int qxl_release_list_add(struct qxl_release *release, struct qxl_bo *bo);
int qxl_release_reserve_list(struct qxl_release *release, bool no_intr);
void qxl_release_backoff_reserve_list(struct qxl_release *release);
void qxl_release_fence_buffer_objects(struct qxl_release *release);
int qxl_alloc_surface_release_reserved(struct qxl_device *qdev,
enum qxl_surface_cmd_type surface_cmd_type,
struct qxl_release *create_rel,
struct qxl_release **release);
int qxl_alloc_release_reserved(struct qxl_device *qdev, unsigned long size,
int type, struct qxl_release **release,
struct qxl_bo **rbo);
int
qxl_push_command_ring_release(struct qxl_device *qdev, struct qxl_release *release,
uint32_t type, bool interruptible);
int
qxl_push_cursor_ring_release(struct qxl_device *qdev, struct qxl_release *release,
uint32_t type, bool interruptible);
int qxl_alloc_bo_reserved(struct qxl_device *qdev,
struct qxl_release *release,
unsigned long size,
struct qxl_bo **_bo);
/* qxl drawing commands */
void qxl_draw_opaque_fb(const struct qxl_fb_image *qxl_fb_image,
int stride /* filled in if 0 */);
void qxl_draw_dirty_fb(struct qxl_device *qdev,
struct qxl_framebuffer *qxl_fb,
struct qxl_bo *bo,
unsigned flags, unsigned color,
struct drm_clip_rect *clips,
unsigned num_clips, int inc);
void qxl_draw_fill(struct qxl_draw_fill *qxl_draw_fill_rec);
void qxl_draw_copyarea(struct qxl_device *qdev,
u32 width, u32 height,
u32 sx, u32 sy,
u32 dx, u32 dy);
void qxl_release_free(struct qxl_device *qdev,
struct qxl_release *release);
/* used by qxl_debugfs_release */
struct qxl_release *qxl_release_from_id_locked(struct qxl_device *qdev,
uint64_t id);
bool qxl_queue_garbage_collect(struct qxl_device *qdev, bool flush);
int qxl_garbage_collect(struct qxl_device *qdev);
/* debugfs */
int qxl_debugfs_init(struct drm_minor *minor);
int qxl_ttm_debugfs_init(struct qxl_device *qdev);
/* qxl_prime.c */
int qxl_gem_prime_pin(struct drm_gem_object *obj);
void qxl_gem_prime_unpin(struct drm_gem_object *obj);
struct sg_table *qxl_gem_prime_get_sg_table(struct drm_gem_object *obj);
struct drm_gem_object *qxl_gem_prime_import_sg_table(
struct drm_device *dev, struct dma_buf_attachment *attach,
struct sg_table *sgt);
void *qxl_gem_prime_vmap(struct drm_gem_object *obj);
void qxl_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
int qxl_gem_prime_mmap(struct drm_gem_object *obj,
struct vm_area_struct *vma);
/* qxl_irq.c */
int qxl_irq_init(struct qxl_device *qdev);
irqreturn_t qxl_irq_handler(int irq, void *arg);
/* qxl_fb.c */
bool qxl_fbdev_qobj_is_fb(struct qxl_device *qdev, struct qxl_bo *qobj);
int qxl_debugfs_add_files(struct qxl_device *qdev,
struct drm_info_list *files,
unsigned nfiles);
int qxl_surface_id_alloc(struct qxl_device *qdev,
struct qxl_bo *surf);
void qxl_surface_id_dealloc(struct qxl_device *qdev,
uint32_t surface_id);
int qxl_hw_surface_alloc(struct qxl_device *qdev,
struct qxl_bo *surf,
struct ttm_mem_reg *mem);
int qxl_hw_surface_dealloc(struct qxl_device *qdev,
struct qxl_bo *surf);
int qxl_bo_check_id(struct qxl_device *qdev, struct qxl_bo *bo);
struct qxl_drv_surface *
qxl_surface_lookup(struct drm_device *dev, int surface_id);
void qxl_surface_evict(struct qxl_device *qdev, struct qxl_bo *surf, bool freeing);
#endif
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