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Subject[PATCH v19 1/6] drm/i915/gvt: Add framebuffer decoder support
Date
This patch is to introduce the framebuffer decoder which can decode guest
OS's framebuffer information, including primary, cursor and sprite plane.

v16:
- rebase to 4.14.0-rc6.

v14:
- refine pixel format table. (Zhenyu)

v9:
- move drm format change to a separate patch. (Xiaoguang)

v8:
- fix a bug in decoding primary plane. (Tina)

v7:
- refine framebuffer decoder code. (Zhenyu)

Signed-off-by: Tina Zhang <tina.zhang@intel.com>
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
---
drivers/gpu/drm/i915/gvt/Makefile | 3 +-
drivers/gpu/drm/i915/gvt/display.c | 2 +-
drivers/gpu/drm/i915/gvt/display.h | 2 +
drivers/gpu/drm/i915/gvt/fb_decoder.c | 507 ++++++++++++++++++++++++++++++++++
drivers/gpu/drm/i915/gvt/fb_decoder.h | 169 ++++++++++++
drivers/gpu/drm/i915/gvt/gvt.h | 1 +
6 files changed, 682 insertions(+), 2 deletions(-)
create mode 100644 drivers/gpu/drm/i915/gvt/fb_decoder.c
create mode 100644 drivers/gpu/drm/i915/gvt/fb_decoder.h

diff --git a/drivers/gpu/drm/i915/gvt/Makefile b/drivers/gpu/drm/i915/gvt/Makefile
index 18e1c17..b786ac3 100644
--- a/drivers/gpu/drm/i915/gvt/Makefile
+++ b/drivers/gpu/drm/i915/gvt/Makefile
@@ -2,7 +2,8 @@
GVT_DIR := gvt
GVT_SOURCE := gvt.o aperture_gm.o handlers.o vgpu.o trace_points.o firmware.o \
interrupt.o gtt.o cfg_space.o opregion.o mmio.o display.o edid.o \
- execlist.o scheduler.o sched_policy.o render.o cmd_parser.o debugfs.o
+ execlist.o scheduler.o sched_policy.o render.o cmd_parser.o debugfs.o \
+ fb_decoder.o

ccflags-y += -I$(src) -I$(src)/$(GVT_DIR)
i915-y += $(addprefix $(GVT_DIR)/, $(GVT_SOURCE))
diff --git a/drivers/gpu/drm/i915/gvt/display.c b/drivers/gpu/drm/i915/gvt/display.c
index 3c31843..fb7fdba 100644
--- a/drivers/gpu/drm/i915/gvt/display.c
+++ b/drivers/gpu/drm/i915/gvt/display.c
@@ -67,7 +67,7 @@ static int edp_pipe_is_enabled(struct intel_vgpu *vgpu)
return 1;
}

-static int pipe_is_enabled(struct intel_vgpu *vgpu, int pipe)
+int pipe_is_enabled(struct intel_vgpu *vgpu, int pipe)
{
struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;

diff --git a/drivers/gpu/drm/i915/gvt/display.h b/drivers/gpu/drm/i915/gvt/display.h
index d73de22..b46b868 100644
--- a/drivers/gpu/drm/i915/gvt/display.h
+++ b/drivers/gpu/drm/i915/gvt/display.h
@@ -179,4 +179,6 @@ int intel_vgpu_init_display(struct intel_vgpu *vgpu, u64 resolution);
void intel_vgpu_reset_display(struct intel_vgpu *vgpu);
void intel_vgpu_clean_display(struct intel_vgpu *vgpu);

+int pipe_is_enabled(struct intel_vgpu *vgpu, int pipe);
+
#endif
diff --git a/drivers/gpu/drm/i915/gvt/fb_decoder.c b/drivers/gpu/drm/i915/gvt/fb_decoder.c
new file mode 100644
index 0000000..6c99c64
--- /dev/null
+++ b/drivers/gpu/drm/i915/gvt/fb_decoder.c
@@ -0,0 +1,507 @@
+/*
+ * Copyright(c) 2011-2016 Intel Corporation. All rights reserved.
+ *
+ * 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 (including the next
+ * paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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:
+ * Kevin Tian <kevin.tian@intel.com>
+ *
+ * Contributors:
+ * Bing Niu <bing.niu@intel.com>
+ * Xu Han <xu.han@intel.com>
+ * Ping Gao <ping.a.gao@intel.com>
+ * Xiaoguang Chen <xiaoguang.chen@intel.com>
+ * Yang Liu <yang2.liu@intel.com>
+ * Tina Zhang <tina.zhang@intel.com>
+ *
+ */
+
+#include <uapi/drm/drm_fourcc.h>
+#include "i915_drv.h"
+#include "gvt.h"
+
+#define PRIMARY_FORMAT_NUM 16
+struct pixel_format {
+ int drm_format; /* Pixel format in DRM definition */
+ int bpp; /* Bits per pixel, 0 indicates invalid */
+ char *desc; /* The description */
+};
+
+static struct pixel_format bdw_pixel_formats[] = {
+ {DRM_FORMAT_C8, 8, "8-bit Indexed"},
+ {DRM_FORMAT_RGB565, 16, "16-bit BGRX (5:6:5 MSB-R:G:B)"},
+ {DRM_FORMAT_XRGB8888, 32, "32-bit BGRX (8:8:8:8 MSB-X:R:G:B)"},
+ {DRM_FORMAT_XBGR2101010, 32, "32-bit RGBX (2:10:10:10 MSB-X:B:G:R)"},
+
+ {DRM_FORMAT_XRGB2101010, 32, "32-bit BGRX (2:10:10:10 MSB-X:R:G:B)"},
+ {DRM_FORMAT_XBGR8888, 32, "32-bit RGBX (8:8:8:8 MSB-X:B:G:R)"},
+
+ /* non-supported format has bpp default to 0 */
+ {0, 0, NULL},
+};
+
+static struct pixel_format skl_pixel_formats[] = {
+ {DRM_FORMAT_YUYV, 16, "16-bit packed YUYV (8:8:8:8 MSB-V:Y2:U:Y1)"},
+ {DRM_FORMAT_UYVY, 16, "16-bit packed UYVY (8:8:8:8 MSB-Y2:V:Y1:U)"},
+ {DRM_FORMAT_YVYU, 16, "16-bit packed YVYU (8:8:8:8 MSB-U:Y2:V:Y1)"},
+ {DRM_FORMAT_VYUY, 16, "16-bit packed VYUY (8:8:8:8 MSB-Y2:U:Y1:V)"},
+
+ {DRM_FORMAT_C8, 8, "8-bit Indexed"},
+ {DRM_FORMAT_RGB565, 16, "16-bit BGRX (5:6:5 MSB-R:G:B)"},
+ {DRM_FORMAT_ABGR8888, 32, "32-bit RGBA (8:8:8:8 MSB-A:B:G:R)"},
+ {DRM_FORMAT_XBGR8888, 32, "32-bit RGBX (8:8:8:8 MSB-X:B:G:R)"},
+
+ {DRM_FORMAT_ARGB8888, 32, "32-bit BGRA (8:8:8:8 MSB-A:R:G:B)"},
+ {DRM_FORMAT_XRGB8888, 32, "32-bit BGRX (8:8:8:8 MSB-X:R:G:B)"},
+ {DRM_FORMAT_XBGR2101010, 32, "32-bit RGBX (2:10:10:10 MSB-X:B:G:R)"},
+ {DRM_FORMAT_XRGB2101010, 32, "32-bit BGRX (2:10:10:10 MSB-X:R:G:B)"},
+
+ /* non-supported format has bpp default to 0 */
+ {0, 0, NULL},
+};
+
+static int bdw_format_to_drm(int format)
+{
+ int bdw_pixel_formats_index = 6;
+
+ switch (format) {
+ case DISPPLANE_8BPP:
+ bdw_pixel_formats_index = 0;
+ break;
+ case DISPPLANE_BGRX565:
+ bdw_pixel_formats_index = 1;
+ break;
+ case DISPPLANE_BGRX888:
+ bdw_pixel_formats_index = 2;
+ break;
+ case DISPPLANE_RGBX101010:
+ bdw_pixel_formats_index = 3;
+ break;
+ case DISPPLANE_BGRX101010:
+ bdw_pixel_formats_index = 4;
+ break;
+ case DISPPLANE_RGBX888:
+ bdw_pixel_formats_index = 5;
+ break;
+
+ default:
+ break;
+ }
+
+ return bdw_pixel_formats_index;
+}
+
+static int skl_format_to_drm(int format, bool rgb_order, bool alpha,
+ int yuv_order)
+{
+ int skl_pixel_formats_index = 12;
+
+ switch (format) {
+ case PLANE_CTL_FORMAT_INDEXED:
+ skl_pixel_formats_index = 4;
+ break;
+ case PLANE_CTL_FORMAT_RGB_565:
+ skl_pixel_formats_index = 5;
+ break;
+ case PLANE_CTL_FORMAT_XRGB_8888:
+ if (rgb_order)
+ skl_pixel_formats_index = alpha ? 6 : 7;
+ else
+ skl_pixel_formats_index = alpha ? 8 : 9;
+ break;
+ case PLANE_CTL_FORMAT_XRGB_2101010:
+ skl_pixel_formats_index = rgb_order ? 10 : 11;
+ break;
+ case PLANE_CTL_FORMAT_YUV422:
+ skl_pixel_formats_index = yuv_order >> 16;
+ if (skl_pixel_formats_index > 3)
+ return -EINVAL;
+ break;
+
+ default:
+ break;
+ }
+
+ return skl_pixel_formats_index;
+}
+
+static u32 intel_vgpu_get_stride(struct intel_vgpu *vgpu, int pipe,
+ u32 tiled, int stride_mask, int bpp)
+{
+ struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
+
+ u32 stride_reg = vgpu_vreg(vgpu, DSPSTRIDE(pipe)) & stride_mask;
+ u32 stride = stride_reg;
+
+ if (IS_SKYLAKE(dev_priv)) {
+ switch (tiled) {
+ case PLANE_CTL_TILED_LINEAR:
+ stride = stride_reg * 64;
+ break;
+ case PLANE_CTL_TILED_X:
+ stride = stride_reg * 512;
+ break;
+ case PLANE_CTL_TILED_Y:
+ stride = stride_reg * 128;
+ break;
+ case PLANE_CTL_TILED_YF:
+ if (bpp == 8)
+ stride = stride_reg * 64;
+ else if (bpp == 16 || bpp == 32 || bpp == 64)
+ stride = stride_reg * 128;
+ else
+ gvt_dbg_core("skl: unsupported bpp:%d\n", bpp);
+ break;
+ default:
+ gvt_dbg_core("skl: unsupported tile format:%x\n",
+ tiled);
+ }
+ }
+
+ return stride;
+}
+
+static int get_active_pipe(struct intel_vgpu *vgpu)
+{
+ int i;
+
+ for (i = 0; i < I915_MAX_PIPES; i++)
+ if (pipe_is_enabled(vgpu, i))
+ break;
+
+ return i;
+}
+
+/**
+ * intel_vgpu_decode_primary_plane - Decode primary plane
+ * @vgpu: input vgpu
+ * @plane: primary plane to save decoded info
+ * This function is called for decoding plane
+ *
+ * Returns:
+ * 0 on success, non-zero if failed.
+ */
+int intel_vgpu_decode_primary_plane(struct intel_vgpu *vgpu,
+ struct intel_vgpu_primary_plane_format *plane)
+{
+ u32 val, fmt;
+ struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
+ int pipe;
+
+ pipe = get_active_pipe(vgpu);
+ if (pipe >= I915_MAX_PIPES)
+ return -ENODEV;
+
+ val = vgpu_vreg(vgpu, DSPCNTR(pipe));
+ plane->enabled = !!(val & DISPLAY_PLANE_ENABLE);
+ if (!plane->enabled)
+ return -ENODEV;
+
+ if (IS_SKYLAKE(dev_priv)) {
+ plane->tiled = (val & PLANE_CTL_TILED_MASK) >>
+ _PLANE_CTL_TILED_SHIFT;
+ fmt = skl_format_to_drm(
+ val & PLANE_CTL_FORMAT_MASK,
+ val & PLANE_CTL_ORDER_RGBX,
+ val & PLANE_CTL_ALPHA_MASK,
+ val & PLANE_CTL_YUV422_ORDER_MASK);
+ plane->bpp = skl_pixel_formats[fmt].bpp;
+ plane->drm_format = skl_pixel_formats[fmt].drm_format;
+ } else {
+ plane->tiled = !!(val & DISPPLANE_TILED);
+ fmt = bdw_format_to_drm(val & DISPPLANE_PIXFORMAT_MASK);
+ plane->bpp = bdw_pixel_formats[fmt].bpp;
+ plane->drm_format = bdw_pixel_formats[fmt].drm_format;
+ }
+
+ if (!plane->bpp) {
+ gvt_vgpu_err("Non-supported pixel format (0x%x)\n", fmt);
+ return -EINVAL;
+ }
+
+ plane->hw_format = fmt;
+
+ plane->base = vgpu_vreg(vgpu, DSPSURF(pipe)) & I915_GTT_PAGE_MASK;
+ if (!intel_gvt_ggtt_validate_range(vgpu, plane->base, 0)) {
+ gvt_vgpu_err("invalid gma address: %lx\n",
+ (unsigned long)plane->base);
+ return -EINVAL;
+ }
+
+ plane->base_gpa = intel_vgpu_gma_to_gpa(vgpu->gtt.ggtt_mm, plane->base);
+ if (plane->base_gpa == INTEL_GVT_INVALID_ADDR) {
+ gvt_vgpu_err("invalid gma address: %lx\n",
+ (unsigned long)plane->base);
+ return -EINVAL;
+ }
+
+ plane->stride = intel_vgpu_get_stride(vgpu, pipe, (plane->tiled << 10),
+ (IS_SKYLAKE(dev_priv)) ? (_PRI_PLANE_STRIDE_MASK >> 6) :
+ _PRI_PLANE_STRIDE_MASK, plane->bpp);
+
+ plane->width = (vgpu_vreg(vgpu, PIPESRC(pipe)) & _PIPE_H_SRCSZ_MASK) >>
+ _PIPE_H_SRCSZ_SHIFT;
+ plane->width += 1;
+ plane->height = (vgpu_vreg(vgpu, PIPESRC(pipe)) &
+ _PIPE_V_SRCSZ_MASK) >> _PIPE_V_SRCSZ_SHIFT;
+ plane->height += 1; /* raw height is one minus the real value */
+
+ val = vgpu_vreg(vgpu, DSPTILEOFF(pipe));
+ plane->x_offset = (val & _PRI_PLANE_X_OFF_MASK) >>
+ _PRI_PLANE_X_OFF_SHIFT;
+ plane->y_offset = (val & _PRI_PLANE_Y_OFF_MASK) >>
+ _PRI_PLANE_Y_OFF_SHIFT;
+
+ return 0;
+}
+
+#define CURSOR_FORMAT_NUM (1 << 6)
+struct cursor_mode_format {
+ int drm_format; /* Pixel format in DRM definition */
+ u8 bpp; /* Bits per pixel; 0 indicates invalid */
+ u32 width; /* In pixel */
+ u32 height; /* In lines */
+ char *desc; /* The description */
+};
+
+static struct cursor_mode_format cursor_pixel_formats[] = {
+ {DRM_FORMAT_ARGB8888, 32, 128, 128, "128x128 32bpp ARGB"},
+ {DRM_FORMAT_ARGB8888, 32, 256, 256, "256x256 32bpp ARGB"},
+ {DRM_FORMAT_ARGB8888, 32, 64, 64, "64x64 32bpp ARGB"},
+ {DRM_FORMAT_ARGB8888, 32, 64, 64, "64x64 32bpp ARGB"},
+
+ /* non-supported format has bpp default to 0 */
+ {0, 0, 0, 0, NULL},
+};
+
+static int cursor_mode_to_drm(int mode)
+{
+ int cursor_pixel_formats_index = 4;
+
+ switch (mode) {
+ case CURSOR_MODE_128_ARGB_AX:
+ cursor_pixel_formats_index = 0;
+ break;
+ case CURSOR_MODE_256_ARGB_AX:
+ cursor_pixel_formats_index = 1;
+ break;
+ case CURSOR_MODE_64_ARGB_AX:
+ cursor_pixel_formats_index = 2;
+ break;
+ case CURSOR_MODE_64_32B_AX:
+ cursor_pixel_formats_index = 3;
+ break;
+
+ default:
+ break;
+ }
+
+ return cursor_pixel_formats_index;
+}
+
+/**
+ * intel_vgpu_decode_cursor_plane - Decode sprite plane
+ * @vgpu: input vgpu
+ * @plane: cursor plane to save decoded info
+ * This function is called for decoding plane
+ *
+ * Returns:
+ * 0 on success, non-zero if failed.
+ */
+int intel_vgpu_decode_cursor_plane(struct intel_vgpu *vgpu,
+ struct intel_vgpu_cursor_plane_format *plane)
+{
+ u32 val, mode, index;
+ u32 alpha_plane, alpha_force;
+ struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
+ int pipe;
+
+ pipe = get_active_pipe(vgpu);
+ if (pipe >= I915_MAX_PIPES)
+ return -ENODEV;
+
+ val = vgpu_vreg(vgpu, CURCNTR(pipe));
+ mode = val & CURSOR_MODE;
+ plane->enabled = (mode != CURSOR_MODE_DISABLE);
+ if (!plane->enabled)
+ return -ENODEV;
+
+ index = cursor_mode_to_drm(mode);
+
+ if (!cursor_pixel_formats[index].bpp) {
+ gvt_vgpu_err("Non-supported cursor mode (0x%x)\n", mode);
+ return -EINVAL;
+ }
+ plane->mode = mode;
+ plane->bpp = cursor_pixel_formats[index].bpp;
+ plane->drm_format = cursor_pixel_formats[index].drm_format;
+ plane->width = cursor_pixel_formats[index].width;
+ plane->height = cursor_pixel_formats[index].height;
+
+ alpha_plane = (val & _CURSOR_ALPHA_PLANE_MASK) >>
+ _CURSOR_ALPHA_PLANE_SHIFT;
+ alpha_force = (val & _CURSOR_ALPHA_FORCE_MASK) >>
+ _CURSOR_ALPHA_FORCE_SHIFT;
+ if (alpha_plane || alpha_force)
+ gvt_dbg_core("alpha_plane=0x%x, alpha_force=0x%x\n",
+ alpha_plane, alpha_force);
+
+ plane->base = vgpu_vreg(vgpu, CURBASE(pipe)) & I915_GTT_PAGE_MASK;
+ if (!intel_gvt_ggtt_validate_range(vgpu, plane->base, 0)) {
+ gvt_vgpu_err("invalid gma address: %lx\n",
+ (unsigned long)plane->base);
+ return -EINVAL;
+ }
+
+ plane->base_gpa = intel_vgpu_gma_to_gpa(vgpu->gtt.ggtt_mm, plane->base);
+ if (plane->base_gpa == INTEL_GVT_INVALID_ADDR) {
+ gvt_vgpu_err("invalid gma address: %lx\n",
+ (unsigned long)plane->base);
+ return -EINVAL;
+ }
+
+ val = vgpu_vreg(vgpu, CURPOS(pipe));
+ plane->x_pos = (val & _CURSOR_POS_X_MASK) >> _CURSOR_POS_X_SHIFT;
+ plane->x_sign = (val & _CURSOR_SIGN_X_MASK) >> _CURSOR_SIGN_X_SHIFT;
+ plane->y_pos = (val & _CURSOR_POS_Y_MASK) >> _CURSOR_POS_Y_SHIFT;
+ plane->y_sign = (val & _CURSOR_SIGN_Y_MASK) >> _CURSOR_SIGN_Y_SHIFT;
+
+ return 0;
+}
+
+#define SPRITE_FORMAT_NUM (1 << 3)
+
+static struct pixel_format sprite_pixel_formats[SPRITE_FORMAT_NUM] = {
+ [0x0] = {DRM_FORMAT_YUV422, 16, "YUV 16-bit 4:2:2 packed"},
+ [0x1] = {DRM_FORMAT_XRGB2101010, 32, "RGB 32-bit 2:10:10:10"},
+ [0x2] = {DRM_FORMAT_XRGB8888, 32, "RGB 32-bit 8:8:8:8"},
+ [0x4] = {DRM_FORMAT_AYUV, 32,
+ "YUV 32-bit 4:4:4 packed (8:8:8:8 MSB-X:Y:U:V)"},
+};
+
+/**
+ * intel_vgpu_decode_sprite_plane - Decode sprite plane
+ * @vgpu: input vgpu
+ * @plane: sprite plane to save decoded info
+ * This function is called for decoding plane
+ *
+ * Returns:
+ * 0 on success, non-zero if failed.
+ */
+int intel_vgpu_decode_sprite_plane(struct intel_vgpu *vgpu,
+ struct intel_vgpu_sprite_plane_format *plane)
+{
+ u32 val, fmt;
+ u32 color_order, yuv_order;
+ int drm_format;
+ int pipe;
+
+ pipe = get_active_pipe(vgpu);
+ if (pipe >= I915_MAX_PIPES)
+ return -ENODEV;
+
+ val = vgpu_vreg(vgpu, SPRCTL(pipe));
+ plane->enabled = !!(val & SPRITE_ENABLE);
+ if (!plane->enabled)
+ return -ENODEV;
+
+ plane->tiled = !!(val & SPRITE_TILED);
+ color_order = !!(val & SPRITE_RGB_ORDER_RGBX);
+ yuv_order = (val & SPRITE_YUV_BYTE_ORDER_MASK) >>
+ _SPRITE_YUV_ORDER_SHIFT;
+
+ fmt = (val & SPRITE_PIXFORMAT_MASK) >> _SPRITE_FMT_SHIFT;
+ if (!sprite_pixel_formats[fmt].bpp) {
+ gvt_vgpu_err("Non-supported pixel format (0x%x)\n", fmt);
+ return -EINVAL;
+ }
+ plane->hw_format = fmt;
+ plane->bpp = sprite_pixel_formats[fmt].bpp;
+ drm_format = sprite_pixel_formats[fmt].drm_format;
+
+ /* Order of RGB values in an RGBxxx buffer may be ordered RGB or
+ * BGR depending on the state of the color_order field
+ */
+ if (!color_order) {
+ if (drm_format == DRM_FORMAT_XRGB2101010)
+ drm_format = DRM_FORMAT_XBGR2101010;
+ else if (drm_format == DRM_FORMAT_XRGB8888)
+ drm_format = DRM_FORMAT_XBGR8888;
+ }
+
+ if (drm_format == DRM_FORMAT_YUV422) {
+ switch (yuv_order) {
+ case 0:
+ drm_format = DRM_FORMAT_YUYV;
+ break;
+ case 1:
+ drm_format = DRM_FORMAT_UYVY;
+ break;
+ case 2:
+ drm_format = DRM_FORMAT_YVYU;
+ break;
+ case 3:
+ drm_format = DRM_FORMAT_VYUY;
+ break;
+ default:
+ /* yuv_order has only 2 bits */
+ break;
+ }
+ }
+
+ plane->drm_format = drm_format;
+
+ plane->base = vgpu_vreg(vgpu, SPRSURF(pipe)) & I915_GTT_PAGE_MASK;
+ if (!intel_gvt_ggtt_validate_range(vgpu, plane->base, 0)) {
+ gvt_vgpu_err("invalid gma address: %lx\n",
+ (unsigned long)plane->base);
+ return -EINVAL;
+ }
+
+ plane->base_gpa = intel_vgpu_gma_to_gpa(vgpu->gtt.ggtt_mm, plane->base);
+ if (plane->base_gpa == INTEL_GVT_INVALID_ADDR) {
+ gvt_vgpu_err("invalid gma address: %lx\n",
+ (unsigned long)plane->base);
+ return -EINVAL;
+ }
+
+ plane->stride = vgpu_vreg(vgpu, SPRSTRIDE(pipe)) &
+ _SPRITE_STRIDE_MASK;
+
+ val = vgpu_vreg(vgpu, SPRSIZE(pipe));
+ plane->height = (val & _SPRITE_SIZE_HEIGHT_MASK) >>
+ _SPRITE_SIZE_HEIGHT_SHIFT;
+ plane->width = (val & _SPRITE_SIZE_WIDTH_MASK) >>
+ _SPRITE_SIZE_WIDTH_SHIFT;
+ plane->height += 1; /* raw height is one minus the real value */
+ plane->width += 1; /* raw width is one minus the real value */
+
+ val = vgpu_vreg(vgpu, SPRPOS(pipe));
+ plane->x_pos = (val & _SPRITE_POS_X_MASK) >> _SPRITE_POS_X_SHIFT;
+ plane->y_pos = (val & _SPRITE_POS_Y_MASK) >> _SPRITE_POS_Y_SHIFT;
+
+ val = vgpu_vreg(vgpu, SPROFFSET(pipe));
+ plane->x_offset = (val & _SPRITE_OFFSET_START_X_MASK) >>
+ _SPRITE_OFFSET_START_X_SHIFT;
+ plane->y_offset = (val & _SPRITE_OFFSET_START_Y_MASK) >>
+ _SPRITE_OFFSET_START_Y_SHIFT;
+
+ return 0;
+}
diff --git a/drivers/gpu/drm/i915/gvt/fb_decoder.h b/drivers/gpu/drm/i915/gvt/fb_decoder.h
new file mode 100644
index 0000000..cb055f3
--- /dev/null
+++ b/drivers/gpu/drm/i915/gvt/fb_decoder.h
@@ -0,0 +1,169 @@
+/*
+ * Copyright(c) 2011-2016 Intel Corporation. All rights reserved.
+ *
+ * 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 (including the next
+ * paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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:
+ * Kevin Tian <kevin.tian@intel.com>
+ *
+ * Contributors:
+ * Bing Niu <bing.niu@intel.com>
+ * Xu Han <xu.han@intel.com>
+ * Ping Gao <ping.a.gao@intel.com>
+ * Xiaoguang Chen <xiaoguang.chen@intel.com>
+ * Yang Liu <yang2.liu@intel.com>
+ * Tina Zhang <tina.zhang@intel.com>
+ *
+ */
+
+#ifndef _GVT_FB_DECODER_H_
+#define _GVT_FB_DECODER_H_
+
+#define _PLANE_CTL_FORMAT_SHIFT 24
+#define _PLANE_CTL_TILED_SHIFT 10
+#define _PIPE_V_SRCSZ_SHIFT 0
+#define _PIPE_V_SRCSZ_MASK (0xfff << _PIPE_V_SRCSZ_SHIFT)
+#define _PIPE_H_SRCSZ_SHIFT 16
+#define _PIPE_H_SRCSZ_MASK (0x1fff << _PIPE_H_SRCSZ_SHIFT)
+
+#define _PRI_PLANE_FMT_SHIFT 26
+#define _PRI_PLANE_STRIDE_MASK (0x3ff << 6)
+#define _PRI_PLANE_X_OFF_SHIFT 0
+#define _PRI_PLANE_X_OFF_MASK (0x1fff << _PRI_PLANE_X_OFF_SHIFT)
+#define _PRI_PLANE_Y_OFF_SHIFT 16
+#define _PRI_PLANE_Y_OFF_MASK (0xfff << _PRI_PLANE_Y_OFF_SHIFT)
+
+#define _CURSOR_MODE 0x3f
+#define _CURSOR_ALPHA_FORCE_SHIFT 8
+#define _CURSOR_ALPHA_FORCE_MASK (0x3 << _CURSOR_ALPHA_FORCE_SHIFT)
+#define _CURSOR_ALPHA_PLANE_SHIFT 10
+#define _CURSOR_ALPHA_PLANE_MASK (0x3 << _CURSOR_ALPHA_PLANE_SHIFT)
+#define _CURSOR_POS_X_SHIFT 0
+#define _CURSOR_POS_X_MASK (0x1fff << _CURSOR_POS_X_SHIFT)
+#define _CURSOR_SIGN_X_SHIFT 15
+#define _CURSOR_SIGN_X_MASK (1 << _CURSOR_SIGN_X_SHIFT)
+#define _CURSOR_POS_Y_SHIFT 16
+#define _CURSOR_POS_Y_MASK (0xfff << _CURSOR_POS_Y_SHIFT)
+#define _CURSOR_SIGN_Y_SHIFT 31
+#define _CURSOR_SIGN_Y_MASK (1 << _CURSOR_SIGN_Y_SHIFT)
+
+#define _SPRITE_FMT_SHIFT 25
+#define _SPRITE_COLOR_ORDER_SHIFT 20
+#define _SPRITE_YUV_ORDER_SHIFT 16
+#define _SPRITE_STRIDE_SHIFT 6
+#define _SPRITE_STRIDE_MASK (0x1ff << _SPRITE_STRIDE_SHIFT)
+#define _SPRITE_SIZE_WIDTH_SHIFT 0
+#define _SPRITE_SIZE_HEIGHT_SHIFT 16
+#define _SPRITE_SIZE_WIDTH_MASK (0x1fff << _SPRITE_SIZE_WIDTH_SHIFT)
+#define _SPRITE_SIZE_HEIGHT_MASK (0xfff << _SPRITE_SIZE_HEIGHT_SHIFT)
+#define _SPRITE_POS_X_SHIFT 0
+#define _SPRITE_POS_Y_SHIFT 16
+#define _SPRITE_POS_X_MASK (0x1fff << _SPRITE_POS_X_SHIFT)
+#define _SPRITE_POS_Y_MASK (0xfff << _SPRITE_POS_Y_SHIFT)
+#define _SPRITE_OFFSET_START_X_SHIFT 0
+#define _SPRITE_OFFSET_START_Y_SHIFT 16
+#define _SPRITE_OFFSET_START_X_MASK (0x1fff << _SPRITE_OFFSET_START_X_SHIFT)
+#define _SPRITE_OFFSET_START_Y_MASK (0xfff << _SPRITE_OFFSET_START_Y_SHIFT)
+
+enum GVT_FB_EVENT {
+ FB_MODE_SET_START = 1,
+ FB_MODE_SET_END,
+ FB_DISPLAY_FLIP,
+};
+
+enum DDI_PORT {
+ DDI_PORT_NONE = 0,
+ DDI_PORT_B = 1,
+ DDI_PORT_C = 2,
+ DDI_PORT_D = 3,
+ DDI_PORT_E = 4
+};
+
+struct intel_gvt;
+
+/* color space conversion and gamma correction are not included */
+struct intel_vgpu_primary_plane_format {
+ u8 enabled; /* plane is enabled */
+ u8 tiled; /* X-tiled */
+ u8 bpp; /* bits per pixel */
+ u32 hw_format; /* format field in the PRI_CTL register */
+ u32 drm_format; /* format in DRM definition */
+ u32 base; /* framebuffer base in graphics memory */
+ u64 base_gpa;
+ u32 x_offset; /* in pixels */
+ u32 y_offset; /* in lines */
+ u32 width; /* in pixels */
+ u32 height; /* in lines */
+ u32 stride; /* in bytes */
+};
+
+struct intel_vgpu_sprite_plane_format {
+ u8 enabled; /* plane is enabled */
+ u8 tiled; /* X-tiled */
+ u8 bpp; /* bits per pixel */
+ u32 hw_format; /* format field in the SPR_CTL register */
+ u32 drm_format; /* format in DRM definition */
+ u32 base; /* sprite base in graphics memory */
+ u64 base_gpa;
+ u32 x_pos; /* in pixels */
+ u32 y_pos; /* in lines */
+ u32 x_offset; /* in pixels */
+ u32 y_offset; /* in lines */
+ u32 width; /* in pixels */
+ u32 height; /* in lines */
+ u32 stride; /* in bytes */
+};
+
+struct intel_vgpu_cursor_plane_format {
+ u8 enabled;
+ u8 mode; /* cursor mode select */
+ u8 bpp; /* bits per pixel */
+ u32 drm_format; /* format in DRM definition */
+ u32 base; /* cursor base in graphics memory */
+ u64 base_gpa;
+ u32 x_pos; /* in pixels */
+ u32 y_pos; /* in lines */
+ u8 x_sign; /* X Position Sign */
+ u8 y_sign; /* Y Position Sign */
+ u32 width; /* in pixels */
+ u32 height; /* in lines */
+ u32 x_hot; /* in pixels */
+ u32 y_hot; /* in pixels */
+};
+
+struct intel_vgpu_pipe_format {
+ struct intel_vgpu_primary_plane_format primary;
+ struct intel_vgpu_sprite_plane_format sprite;
+ struct intel_vgpu_cursor_plane_format cursor;
+ enum DDI_PORT ddi_port; /* the DDI port that pipe is connected to */
+};
+
+struct intel_vgpu_fb_format {
+ struct intel_vgpu_pipe_format pipes[I915_MAX_PIPES];
+};
+
+int intel_vgpu_decode_primary_plane(struct intel_vgpu *vgpu,
+ struct intel_vgpu_primary_plane_format *plane);
+int intel_vgpu_decode_cursor_plane(struct intel_vgpu *vgpu,
+ struct intel_vgpu_cursor_plane_format *plane);
+int intel_vgpu_decode_sprite_plane(struct intel_vgpu *vgpu,
+ struct intel_vgpu_sprite_plane_format *plane);
+
+#endif
diff --git a/drivers/gpu/drm/i915/gvt/gvt.h b/drivers/gpu/drm/i915/gvt/gvt.h
index f3999f2..357d458 100644
--- a/drivers/gpu/drm/i915/gvt/gvt.h
+++ b/drivers/gpu/drm/i915/gvt/gvt.h
@@ -46,6 +46,7 @@
#include "sched_policy.h"
#include "render.h"
#include "cmd_parser.h"
+#include "fb_decoder.h"

#define GVT_MAX_VGPU 8

--
2.7.4
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