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drm/i915: implement drmmode overlay support v4 

This implements intel overlay support for kms via a device-specific
ioctl. Thomas Hellstrom brought up the idea of a general ioctl (on
dri-devel). We've reached the conclusion that such an infrastructure
only makes sense when multiple kms overlay implementations exists,
which atm don't (and it doesn't look like this is gonna change).

Open issues:
- Runs in sync with the gpu, i.e. unnecessary waiting. I've decided
  to wait on this because the hw tends to hang when changing something
  in this area. I left some dummy functions as infrastructure.
- polyphase filtering uses a static table.
- uses uninterruptible sleeps. Unfortunately the alternatives may
  unnecessarily wedged the hw if/when we timeout too early (and
  userspace only overloaded the batch buffers with stuff worth a few
  secs of gpu time).

Changes since v1:
- fix off-by-one misconception on my side. This fixes fullscreen
  playback.
Changes since v2:
- add underrun detection as spec'ed for i965.
- flush caches properly, fixing visual corruptions.
Changes since v4:
- fix up cache flushing of overlay memory regs.
- killed require_pipe_a logic - it hangs the chip.

Tested-By: diego.abelenda@gmail.com (on a 865G)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
[anholt: Resolved against the MADVISE ioctl going in before this one]
Signed-off-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Daniel Vetter 2009-09-15 22:57:34 +02:00 коммит произвёл Eric Anholt
Родитель f0f8a9cece
Коммит 02e792fbaa
8 изменённых файлов: 1432 добавлений и 3 удалений
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1
drivers/gpu/drm/i915/Makefile
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@ -23,6 +23,7 @@ i915-y := i915_drv.o i915_dma.o i915_irq.o i915_mem.o \
intel_fb.o \
intel_tv.o \
intel_dvo.o \
intel_overlay.o \
dvo_ch7xxx.o \
dvo_ch7017.o \
dvo_ivch.o \

7
drivers/gpu/drm/i915/i915_dma.c
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@ -807,6 +807,9 @@ static int i915_getparam(struct drm_device *dev, void *data,
case I915_PARAM_NUM_FENCES_AVAIL:
value = dev_priv->num_fence_regs - dev_priv->fence_reg_start;
break;
case I915_PARAM_HAS_OVERLAY:
value = dev_priv->overlay ? 1 : 0;
break;
default:
DRM_DEBUG_DRIVER("Unknown parameter %d\n",
param->param);
@ -1548,6 +1551,8 @@ int i915_driver_unload(struct drm_device *dev)
mutex_unlock(&dev->struct_mutex);
drm_mm_takedown(&dev_priv->vram);
i915_gem_lastclose(dev);
intel_cleanup_overlay(dev);
}
pci_dev_put(dev_priv->bridge_dev);
@ -1656,6 +1661,8 @@ struct drm_ioctl_desc i915_ioctls[] = {
DRM_IOCTL_DEF(DRM_I915_GEM_GET_APERTURE, i915_gem_get_aperture_ioctl, 0),
DRM_IOCTL_DEF(DRM_I915_GET_PIPE_FROM_CRTC_ID, intel_get_pipe_from_crtc_id, 0),
DRM_IOCTL_DEF(DRM_I915_GEM_MADVISE, i915_gem_madvise_ioctl, 0),
DRM_IOCTL_DEF(DRM_I915_OVERLAY_PUT_IMAGE, intel_overlay_put_image, DRM_MASTER|DRM_CONTROL_ALLOW),
DRM_IOCTL_DEF(DRM_I915_OVERLAY_ATTRS, intel_overlay_attrs, DRM_MASTER|DRM_CONTROL_ALLOW),
};
int i915_max_ioctl = DRM_ARRAY_SIZE(i915_ioctls);

5
drivers/gpu/drm/i915/i915_drv.h
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@ -170,6 +170,8 @@ struct drm_i915_display_funcs {
/* clock gating init */
};
struct intel_overlay;
typedef struct drm_i915_private {
struct drm_device *dev;
@ -241,6 +243,9 @@ typedef struct drm_i915_private {
struct intel_opregion opregion;
/* overlay */
struct intel_overlay *overlay;
/* LVDS info */
int backlight_duty_cycle; /* restore backlight to this value */
bool panel_wants_dither;

5
drivers/gpu/drm/i915/i915_reg.h
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@ -140,6 +140,7 @@
#define MI_NOOP MI_INSTR(0, 0)
#define MI_USER_INTERRUPT MI_INSTR(0x02, 0)
#define MI_WAIT_FOR_EVENT MI_INSTR(0x03, 0)
#define MI_WAIT_FOR_OVERLAY_FLIP (1<<16)
#define MI_WAIT_FOR_PLANE_B_FLIP (1<<6)
#define MI_WAIT_FOR_PLANE_A_FLIP (1<<2)
#define MI_WAIT_FOR_PLANE_A_SCANLINES (1<<1)
@ -151,6 +152,10 @@
#define MI_END_SCENE (1 << 4) /* flush binner and incr scene count */
#define MI_BATCH_BUFFER_END MI_INSTR(0x0a, 0)
#define MI_REPORT_HEAD MI_INSTR(0x07, 0)
#define MI_OVERLAY_FLIP MI_INSTR(0x11,0)
#define MI_OVERLAY_CONTINUE (0x0<<21)
#define MI_OVERLAY_ON (0x1<<21)
#define MI_OVERLAY_OFF (0x2<<21)
#define MI_LOAD_SCAN_LINES_INCL MI_INSTR(0x12, 0)
#define MI_STORE_DWORD_IMM MI_INSTR(0x20, 1)
#define MI_MEM_VIRTUAL (1 << 22) /* 965+ only */

25
drivers/gpu/drm/i915/intel_display.c
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@ -1781,6 +1781,22 @@ static void igdng_crtc_dpms(struct drm_crtc *crtc, int mode)
}
}
static void intel_crtc_dpms_overlay(struct intel_crtc *intel_crtc, bool enable)
{
struct intel_overlay *overlay;
if (!enable && intel_crtc->overlay) {
overlay = intel_crtc->overlay;
mutex_lock(&overlay->dev->struct_mutex);
intel_overlay_switch_off(overlay);
mutex_unlock(&overlay->dev->struct_mutex);
}
/* Let userspace switch the overlay on again. In most cases userspace
* has to recompute where to put it anyway. */
return;
}
static void i9xx_crtc_dpms(struct drm_crtc *crtc, int mode)
{
struct drm_device *dev = crtc->dev;
@ -1839,12 +1855,13 @@ static void i9xx_crtc_dpms(struct drm_crtc *crtc, int mode)
intel_update_fbc(crtc, &crtc->mode);
/* Give the overlay scaler a chance to enable if it's on this pipe */
//intel_crtc_dpms_video(crtc, true); TODO
intel_crtc_dpms_overlay(intel_crtc, true);
break;
case DRM_MODE_DPMS_OFF:
intel_update_watermarks(dev);
/* Give the overlay scaler a chance to disable if it's on this pipe */
//intel_crtc_dpms_video(crtc, FALSE); TODO
intel_crtc_dpms_overlay(intel_crtc, false);
if (dev_priv->cfb_plane == plane &&
dev_priv->display.disable_fbc)
@ -2039,7 +2056,7 @@ static int i830_get_display_clock_speed(struct drm_device *dev)
* Return the pipe currently connected to the panel fitter,
* or -1 if the panel fitter is not present or not in use
*/
static int intel_panel_fitter_pipe (struct drm_device *dev)
int intel_panel_fitter_pipe (struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
u32 pfit_control;
@ -4458,6 +4475,8 @@ void intel_modeset_init(struct drm_device *dev)
INIT_WORK(&dev_priv->idle_work, intel_idle_update);
setup_timer(&dev_priv->idle_timer, intel_gpu_idle_timer,
(unsigned long)dev);
intel_setup_overlay(dev);
}
void intel_modeset_cleanup(struct drm_device *dev)

28
drivers/gpu/drm/i915/intel_drv.h
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@ -110,6 +110,25 @@ struct intel_output {
int clone_mask;
};
struct intel_crtc;
struct intel_overlay {
struct drm_device *dev;
struct intel_crtc *crtc;
struct drm_i915_gem_object *vid_bo;
struct drm_i915_gem_object *old_vid_bo;
int active;
int pfit_active;
u32 pfit_vscale_ratio; /* shifted-point number, (1<<12) == 1.0 */
u32 color_key;
u32 brightness, contrast, saturation;
u32 old_xscale, old_yscale;
/* register access */
u32 flip_addr;
struct drm_i915_gem_object *reg_bo;
void *virt_addr;
int hw_wedged;
};
struct intel_crtc {
struct drm_crtc base;
enum pipe pipe;
@ -121,6 +140,7 @@ struct intel_crtc {
bool busy; /* is scanout buffer being updated frequently? */
struct timer_list idle_timer;
bool lowfreq_avail;
struct intel_overlay *overlay;
};
#define to_intel_crtc(x) container_of(x, struct intel_crtc, base)
@ -148,6 +168,7 @@ intel_dp_set_m_n(struct drm_crtc *crtc, struct drm_display_mode *mode,
extern void intel_edp_link_config (struct intel_output *, int *, int *);
extern int intel_panel_fitter_pipe (struct drm_device *dev);
extern void intel_crtc_load_lut(struct drm_crtc *crtc);
extern void intel_encoder_prepare (struct drm_encoder *encoder);
extern void intel_encoder_commit (struct drm_encoder *encoder);
@ -183,4 +204,11 @@ extern int intel_framebuffer_create(struct drm_device *dev,
struct drm_framebuffer **fb,
struct drm_gem_object *obj);
extern void intel_setup_overlay(struct drm_device *dev);
extern void intel_cleanup_overlay(struct drm_device *dev);
extern int intel_overlay_switch_off(struct intel_overlay *overlay);
extern int intel_overlay_put_image(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int intel_overlay_attrs(struct drm_device *dev, void *data,
struct drm_file *file_priv);
#endif /* __INTEL_DRV_H__ */

1293
drivers/gpu/drm/i915/intel_overlay.c Normal file
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71
include/drm/i915_drm.h
Просмотреть файл

@ -186,6 +186,8 @@ typedef struct _drm_i915_sarea {
#define DRM_I915_GEM_MMAP_GTT 0x24
#define DRM_I915_GET_PIPE_FROM_CRTC_ID 0x25
#define DRM_I915_GEM_MADVISE 0x26
#define DRM_I915_OVERLAY_PUT_IMAGE 0x27
#define DRM_I915_OVERLAY_ATTRS 0x28
#define DRM_IOCTL_I915_INIT DRM_IOW( DRM_COMMAND_BASE + DRM_I915_INIT, drm_i915_init_t)
#define DRM_IOCTL_I915_FLUSH DRM_IO ( DRM_COMMAND_BASE + DRM_I915_FLUSH)
@ -223,6 +225,8 @@ typedef struct _drm_i915_sarea {
#define DRM_IOCTL_I915_GEM_GET_APERTURE DRM_IOR (DRM_COMMAND_BASE + DRM_I915_GEM_GET_APERTURE, struct drm_i915_gem_get_aperture)
#define DRM_IOCTL_I915_GET_PIPE_FROM_CRTC_ID DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GET_PIPE_FROM_CRTC_ID, struct drm_intel_get_pipe_from_crtc_id)
#define DRM_IOCTL_I915_GEM_MADVISE DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GEM_MADVISE, struct drm_i915_gem_madvise)
#define DRM_IOCTL_I915_OVERLAY_PUT_IMAGE DRM_IOW(DRM_COMMAND_BASE + DRM_IOCTL_I915_OVERLAY_ATTRS, struct drm_intel_overlay_put_image)
#define DRM_IOCTL_I915_OVERLAY_ATTRS DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_OVERLAY_ATTRS, struct drm_intel_overlay_attrs)
/* Allow drivers to submit batchbuffers directly to hardware, relying
* on the security mechanisms provided by hardware.
@ -266,6 +270,7 @@ typedef struct drm_i915_irq_wait {
#define I915_PARAM_CHIPSET_ID 4
#define I915_PARAM_HAS_GEM 5
#define I915_PARAM_NUM_FENCES_AVAIL 6
#define I915_PARAM_HAS_OVERLAY 7
typedef struct drm_i915_getparam {
int param;
@ -686,4 +691,70 @@ struct drm_i915_gem_madvise {
__u32 retained;
};
/* flags */
#define I915_OVERLAY_TYPE_MASK 0xff
#define I915_OVERLAY_YUV_PLANAR 0x01
#define I915_OVERLAY_YUV_PACKED 0x02
#define I915_OVERLAY_RGB 0x03
#define I915_OVERLAY_DEPTH_MASK 0xff00
#define I915_OVERLAY_RGB24 0x1000
#define I915_OVERLAY_RGB16 0x2000
#define I915_OVERLAY_RGB15 0x3000
#define I915_OVERLAY_YUV422 0x0100
#define I915_OVERLAY_YUV411 0x0200
#define I915_OVERLAY_YUV420 0x0300
#define I915_OVERLAY_YUV410 0x0400
#define I915_OVERLAY_SWAP_MASK 0xff0000
#define I915_OVERLAY_NO_SWAP 0x000000
#define I915_OVERLAY_UV_SWAP 0x010000
#define I915_OVERLAY_Y_SWAP 0x020000
#define I915_OVERLAY_Y_AND_UV_SWAP 0x030000
#define I915_OVERLAY_FLAGS_MASK 0xff000000
#define I915_OVERLAY_ENABLE 0x01000000
struct drm_intel_overlay_put_image {
/* various flags and src format description */
__u32 flags;
/* source picture description */
__u32 bo_handle;
/* stride values and offsets are in bytes, buffer relative */
__u16 stride_Y; /* stride for packed formats */
__u16 stride_UV;
__u32 offset_Y; /* offset for packet formats */
__u32 offset_U;
__u32 offset_V;
/* in pixels */
__u16 src_width;
__u16 src_height;
/* to compensate the scaling factors for partially covered surfaces */
__u16 src_scan_width;
__u16 src_scan_height;
/* output crtc description */
__u32 crtc_id;
__u16 dst_x;
__u16 dst_y;
__u16 dst_width;
__u16 dst_height;
};
/* flags */
#define I915_OVERLAY_UPDATE_ATTRS (1<<0)
#define I915_OVERLAY_UPDATE_GAMMA (1<<1)
struct drm_intel_overlay_attrs {
__u32 flags;
__u32 color_key;
__s32 brightness;
__u32 contrast;
__u32 saturation;
__u32 gamma0;
__u32 gamma1;
__u32 gamma2;
__u32 gamma3;
__u32 gamma4;
__u32 gamma5;
};
#endif /* _I915_DRM_H_ */