diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_overlay.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_overlay.c | 1497 |
1 files changed, 1497 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_overlay.c b/drivers/gpu/drm/i915/display/intel_overlay.c new file mode 100644 index 000000000000..21339b7f6a3e --- /dev/null +++ b/drivers/gpu/drm/i915/display/intel_overlay.c @@ -0,0 +1,1497 @@ +/* + * Copyright © 2009 + * + * 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: + * Daniel Vetter <daniel@ffwll.ch> + * + * Derived from Xorg ddx, xf86-video-intel, src/i830_video.c + */ + +#include <drm/drm_fourcc.h> +#include <drm/i915_drm.h> + +#include "gem/i915_gem_pm.h" + +#include "i915_drv.h" +#include "i915_reg.h" +#include "intel_drv.h" +#include "intel_frontbuffer.h" +#include "intel_overlay.h" + +/* Limits for overlay size. According to intel doc, the real limits are: + * Y width: 4095, UV width (planar): 2047, Y height: 2047, + * UV width (planar): * 1023. But the xorg thinks 2048 for height and width. Use + * the mininum of both. */ +#define IMAGE_MAX_WIDTH 2048 +#define IMAGE_MAX_HEIGHT 2046 /* 2 * 1023 */ +/* on 830 and 845 these large limits result in the card hanging */ +#define IMAGE_MAX_WIDTH_LEGACY 1024 +#define IMAGE_MAX_HEIGHT_LEGACY 1088 + +/* overlay register definitions */ +/* OCMD register */ +#define OCMD_TILED_SURFACE (0x1<<19) +#define OCMD_MIRROR_MASK (0x3<<17) +#define OCMD_MIRROR_MODE (0x3<<17) +#define OCMD_MIRROR_HORIZONTAL (0x1<<17) +#define OCMD_MIRROR_VERTICAL (0x2<<17) +#define OCMD_MIRROR_BOTH (0x3<<17) +#define OCMD_BYTEORDER_MASK (0x3<<14) /* zero for YUYV or FOURCC YUY2 */ +#define OCMD_UV_SWAP (0x1<<14) /* YVYU */ +#define OCMD_Y_SWAP (0x2<<14) /* UYVY or FOURCC UYVY */ +#define OCMD_Y_AND_UV_SWAP (0x3<<14) /* VYUY */ +#define OCMD_SOURCE_FORMAT_MASK (0xf<<10) +#define OCMD_RGB_888 (0x1<<10) /* not in i965 Intel docs */ +#define OCMD_RGB_555 (0x2<<10) /* not in i965 Intel docs */ +#define OCMD_RGB_565 (0x3<<10) /* not in i965 Intel docs */ +#define OCMD_YUV_422_PACKED (0x8<<10) +#define OCMD_YUV_411_PACKED (0x9<<10) /* not in i965 Intel docs */ +#define OCMD_YUV_420_PLANAR (0xc<<10) +#define OCMD_YUV_422_PLANAR (0xd<<10) +#define OCMD_YUV_410_PLANAR (0xe<<10) /* also 411 */ +#define OCMD_TVSYNCFLIP_PARITY (0x1<<9) +#define OCMD_TVSYNCFLIP_ENABLE (0x1<<7) +#define OCMD_BUF_TYPE_MASK (0x1<<5) +#define OCMD_BUF_TYPE_FRAME (0x0<<5) +#define OCMD_BUF_TYPE_FIELD (0x1<<5) +#define OCMD_TEST_MODE (0x1<<4) +#define OCMD_BUFFER_SELECT (0x3<<2) +#define OCMD_BUFFER0 (0x0<<2) +#define OCMD_BUFFER1 (0x1<<2) +#define OCMD_FIELD_SELECT (0x1<<2) +#define OCMD_FIELD0 (0x0<<1) +#define OCMD_FIELD1 (0x1<<1) +#define OCMD_ENABLE (0x1<<0) + +/* OCONFIG register */ +#define OCONF_PIPE_MASK (0x1<<18) +#define OCONF_PIPE_A (0x0<<18) +#define OCONF_PIPE_B (0x1<<18) +#define OCONF_GAMMA2_ENABLE (0x1<<16) +#define OCONF_CSC_MODE_BT601 (0x0<<5) +#define OCONF_CSC_MODE_BT709 (0x1<<5) +#define OCONF_CSC_BYPASS (0x1<<4) +#define OCONF_CC_OUT_8BIT (0x1<<3) +#define OCONF_TEST_MODE (0x1<<2) +#define OCONF_THREE_LINE_BUFFER (0x1<<0) +#define OCONF_TWO_LINE_BUFFER (0x0<<0) + +/* DCLRKM (dst-key) register */ +#define DST_KEY_ENABLE (0x1<<31) +#define CLK_RGB24_MASK 0x0 +#define CLK_RGB16_MASK 0x070307 +#define CLK_RGB15_MASK 0x070707 +#define CLK_RGB8I_MASK 0xffffff + +#define RGB16_TO_COLORKEY(c) \ + (((c & 0xF800) << 8) | ((c & 0x07E0) << 5) | ((c & 0x001F) << 3)) +#define RGB15_TO_COLORKEY(c) \ + (((c & 0x7c00) << 9) | ((c & 0x03E0) << 6) | ((c & 0x001F) << 3)) + +/* overlay flip addr flag */ +#define OFC_UPDATE 0x1 + +/* polyphase filter coefficients */ +#define N_HORIZ_Y_TAPS 5 +#define N_VERT_Y_TAPS 3 +#define N_HORIZ_UV_TAPS 3 +#define N_VERT_UV_TAPS 3 +#define N_PHASES 17 +#define MAX_TAPS 5 + +/* memory bufferd overlay registers */ +struct overlay_registers { + u32 OBUF_0Y; + u32 OBUF_1Y; + u32 OBUF_0U; + u32 OBUF_0V; + u32 OBUF_1U; + u32 OBUF_1V; + u32 OSTRIDE; + u32 YRGB_VPH; + u32 UV_VPH; + u32 HORZ_PH; + u32 INIT_PHS; + u32 DWINPOS; + u32 DWINSZ; + u32 SWIDTH; + u32 SWIDTHSW; + u32 SHEIGHT; + u32 YRGBSCALE; + u32 UVSCALE; + u32 OCLRC0; + u32 OCLRC1; + u32 DCLRKV; + u32 DCLRKM; + u32 SCLRKVH; + u32 SCLRKVL; + u32 SCLRKEN; + u32 OCONFIG; + u32 OCMD; + u32 RESERVED1; /* 0x6C */ + u32 OSTART_0Y; + u32 OSTART_1Y; + u32 OSTART_0U; + u32 OSTART_0V; + u32 OSTART_1U; + u32 OSTART_1V; + u32 OTILEOFF_0Y; + u32 OTILEOFF_1Y; + u32 OTILEOFF_0U; + u32 OTILEOFF_0V; + u32 OTILEOFF_1U; + u32 OTILEOFF_1V; + u32 FASTHSCALE; /* 0xA0 */ + u32 UVSCALEV; /* 0xA4 */ + u32 RESERVEDC[(0x200 - 0xA8) / 4]; /* 0xA8 - 0x1FC */ + u16 Y_VCOEFS[N_VERT_Y_TAPS * N_PHASES]; /* 0x200 */ + u16 RESERVEDD[0x100 / 2 - N_VERT_Y_TAPS * N_PHASES]; + u16 Y_HCOEFS[N_HORIZ_Y_TAPS * N_PHASES]; /* 0x300 */ + u16 RESERVEDE[0x200 / 2 - N_HORIZ_Y_TAPS * N_PHASES]; + u16 UV_VCOEFS[N_VERT_UV_TAPS * N_PHASES]; /* 0x500 */ + u16 RESERVEDF[0x100 / 2 - N_VERT_UV_TAPS * N_PHASES]; + u16 UV_HCOEFS[N_HORIZ_UV_TAPS * N_PHASES]; /* 0x600 */ + u16 RESERVEDG[0x100 / 2 - N_HORIZ_UV_TAPS * N_PHASES]; +}; + +struct intel_overlay { + struct drm_i915_private *i915; + struct intel_crtc *crtc; + struct i915_vma *vma; + struct i915_vma *old_vma; + bool active; + bool pfit_active; + u32 pfit_vscale_ratio; /* shifted-point number, (1<<12) == 1.0 */ + u32 color_key:24; + u32 color_key_enabled:1; + u32 brightness, contrast, saturation; + u32 old_xscale, old_yscale; + /* register access */ + struct drm_i915_gem_object *reg_bo; + struct overlay_registers __iomem *regs; + u32 flip_addr; + /* flip handling */ + struct i915_active_request last_flip; +}; + +static void i830_overlay_clock_gating(struct drm_i915_private *dev_priv, + bool enable) +{ + struct pci_dev *pdev = dev_priv->drm.pdev; + u8 val; + + /* WA_OVERLAY_CLKGATE:alm */ + if (enable) + I915_WRITE(DSPCLK_GATE_D, 0); + else + I915_WRITE(DSPCLK_GATE_D, OVRUNIT_CLOCK_GATE_DISABLE); + + /* WA_DISABLE_L2CACHE_CLOCK_GATING:alm */ + pci_bus_read_config_byte(pdev->bus, + PCI_DEVFN(0, 0), I830_CLOCK_GATE, &val); + if (enable) + val &= ~I830_L2_CACHE_CLOCK_GATE_DISABLE; + else + val |= I830_L2_CACHE_CLOCK_GATE_DISABLE; + pci_bus_write_config_byte(pdev->bus, + PCI_DEVFN(0, 0), I830_CLOCK_GATE, val); +} + +static void intel_overlay_submit_request(struct intel_overlay *overlay, + struct i915_request *rq, + i915_active_retire_fn retire) +{ + GEM_BUG_ON(i915_active_request_peek(&overlay->last_flip, + &overlay->i915->drm.struct_mutex)); + i915_active_request_set_retire_fn(&overlay->last_flip, retire, + &overlay->i915->drm.struct_mutex); + __i915_active_request_set(&overlay->last_flip, rq); + i915_request_add(rq); +} + +static int intel_overlay_do_wait_request(struct intel_overlay *overlay, + struct i915_request *rq, + i915_active_retire_fn retire) +{ + intel_overlay_submit_request(overlay, rq, retire); + return i915_active_request_retire(&overlay->last_flip, + &overlay->i915->drm.struct_mutex); +} + +static struct i915_request *alloc_request(struct intel_overlay *overlay) +{ + struct intel_engine_cs *engine = overlay->i915->engine[RCS0]; + + return i915_request_create(engine->kernel_context); +} + +/* overlay needs to be disable in OCMD reg */ +static int intel_overlay_on(struct intel_overlay *overlay) +{ + struct drm_i915_private *dev_priv = overlay->i915; + struct i915_request *rq; + u32 *cs; + + WARN_ON(overlay->active); + + rq = alloc_request(overlay); + if (IS_ERR(rq)) + return PTR_ERR(rq); + + cs = intel_ring_begin(rq, 4); + if (IS_ERR(cs)) { + i915_request_add(rq); + return PTR_ERR(cs); + } + + overlay->active = true; + + if (IS_I830(dev_priv)) + i830_overlay_clock_gating(dev_priv, false); + + *cs++ = MI_OVERLAY_FLIP | MI_OVERLAY_ON; + *cs++ = overlay->flip_addr | OFC_UPDATE; + *cs++ = MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP; + *cs++ = MI_NOOP; + intel_ring_advance(rq, cs); + + return intel_overlay_do_wait_request(overlay, rq, NULL); +} + +static void intel_overlay_flip_prepare(struct intel_overlay *overlay, + struct i915_vma *vma) +{ + enum pipe pipe = overlay->crtc->pipe; + + WARN_ON(overlay->old_vma); + + i915_gem_track_fb(overlay->vma ? overlay->vma->obj : NULL, + vma ? vma->obj : NULL, + INTEL_FRONTBUFFER_OVERLAY(pipe)); + + intel_frontbuffer_flip_prepare(overlay->i915, + INTEL_FRONTBUFFER_OVERLAY(pipe)); + + overlay->old_vma = overlay->vma; + if (vma) + overlay->vma = i915_vma_get(vma); + else + overlay->vma = NULL; +} + +/* overlay needs to be enabled in OCMD reg */ +static int intel_overlay_continue(struct intel_overlay *overlay, + struct i915_vma *vma, + bool load_polyphase_filter) +{ + struct drm_i915_private *dev_priv = overlay->i915; + struct i915_request *rq; + u32 flip_addr = overlay->flip_addr; + u32 tmp, *cs; + + WARN_ON(!overlay->active); + + if (load_polyphase_filter) + flip_addr |= OFC_UPDATE; + + /* check for underruns */ + tmp = I915_READ(DOVSTA); + if (tmp & (1 << 17)) + DRM_DEBUG("overlay underrun, DOVSTA: %x\n", tmp); + + rq = alloc_request(overlay); + if (IS_ERR(rq)) + return PTR_ERR(rq); + + cs = intel_ring_begin(rq, 2); + if (IS_ERR(cs)) { + i915_request_add(rq); + return PTR_ERR(cs); + } + + *cs++ = MI_OVERLAY_FLIP | MI_OVERLAY_CONTINUE; + *cs++ = flip_addr; + intel_ring_advance(rq, cs); + + intel_overlay_flip_prepare(overlay, vma); + + intel_overlay_submit_request(overlay, rq, NULL); + + return 0; +} + +static void intel_overlay_release_old_vma(struct intel_overlay *overlay) +{ + struct i915_vma *vma; + + vma = fetch_and_zero(&overlay->old_vma); + if (WARN_ON(!vma)) + return; + + intel_frontbuffer_flip_complete(overlay->i915, + INTEL_FRONTBUFFER_OVERLAY(overlay->crtc->pipe)); + + i915_gem_object_unpin_from_display_plane(vma); + i915_vma_put(vma); +} + +static void +intel_overlay_release_old_vid_tail(struct i915_active_request *active, + struct i915_request *rq) +{ + struct intel_overlay *overlay = + container_of(active, typeof(*overlay), last_flip); + + intel_overlay_release_old_vma(overlay); +} + +static void intel_overlay_off_tail(struct i915_active_request *active, + struct i915_request *rq) +{ + struct intel_overlay *overlay = + container_of(active, typeof(*overlay), last_flip); + struct drm_i915_private *dev_priv = overlay->i915; + + intel_overlay_release_old_vma(overlay); + + overlay->crtc->overlay = NULL; + overlay->crtc = NULL; + overlay->active = false; + + if (IS_I830(dev_priv)) + i830_overlay_clock_gating(dev_priv, true); +} + +/* overlay needs to be disabled in OCMD reg */ +static int intel_overlay_off(struct intel_overlay *overlay) +{ + struct i915_request *rq; + u32 *cs, flip_addr = overlay->flip_addr; + + WARN_ON(!overlay->active); + + /* According to intel docs the overlay hw may hang (when switching + * off) without loading the filter coeffs. It is however unclear whether + * this applies to the disabling of the overlay or to the switching off + * of the hw. Do it in both cases */ + flip_addr |= OFC_UPDATE; + + rq = alloc_request(overlay); + if (IS_ERR(rq)) + return PTR_ERR(rq); + + cs = intel_ring_begin(rq, 6); + if (IS_ERR(cs)) { + i915_request_add(rq); + return PTR_ERR(cs); + } + + /* wait for overlay to go idle */ + *cs++ = MI_OVERLAY_FLIP | MI_OVERLAY_CONTINUE; + *cs++ = flip_addr; + *cs++ = MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP; + + /* turn overlay off */ + *cs++ = MI_OVERLAY_FLIP | MI_OVERLAY_OFF; + *cs++ = flip_addr; + *cs++ = MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP; + + intel_ring_advance(rq, cs); + + intel_overlay_flip_prepare(overlay, NULL); + + return intel_overlay_do_wait_request(overlay, rq, + intel_overlay_off_tail); +} + +/* recover from an interruption due to a signal + * We have to be careful not to repeat work forever an make forward progess. */ +static int intel_overlay_recover_from_interrupt(struct intel_overlay *overlay) +{ + return i915_active_request_retire(&overlay->last_flip, + &overlay->i915->drm.struct_mutex); +} + +/* Wait for pending overlay flip and release old frame. + * Needs to be called before the overlay register are changed + * via intel_overlay_(un)map_regs + */ +static int intel_overlay_release_old_vid(struct intel_overlay *overlay) +{ + struct drm_i915_private *dev_priv = overlay->i915; + u32 *cs; + int ret; + + lockdep_assert_held(&dev_priv->drm.struct_mutex); + + /* Only wait if there is actually an old frame to release to + * guarantee forward progress. + */ + if (!overlay->old_vma) + return 0; + + if (I915_READ(GEN2_ISR) & I915_OVERLAY_PLANE_FLIP_PENDING_INTERRUPT) { + /* synchronous slowpath */ + struct i915_request *rq; + + rq = alloc_request(overlay); + if (IS_ERR(rq)) + return PTR_ERR(rq); + + cs = intel_ring_begin(rq, 2); + if (IS_ERR(cs)) { + i915_request_add(rq); + return PTR_ERR(cs); + } + + *cs++ = MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP; + *cs++ = MI_NOOP; + intel_ring_advance(rq, cs); + + ret = intel_overlay_do_wait_request(overlay, rq, + intel_overlay_release_old_vid_tail); + if (ret) + return ret; + } else + intel_overlay_release_old_vid_tail(&overlay->last_flip, NULL); + + return 0; +} + +void intel_overlay_reset(struct drm_i915_private *dev_priv) +{ + struct intel_overlay *overlay = dev_priv->overlay; + + if (!overlay) + return; + + overlay->old_xscale = 0; + overlay->old_yscale = 0; + overlay->crtc = NULL; + overlay->active = false; +} + +static int packed_depth_bytes(u32 format) +{ + switch (format & I915_OVERLAY_DEPTH_MASK) { + case I915_OVERLAY_YUV422: + return 4; + case I915_OVERLAY_YUV411: + /* return 6; not implemented */ + default: + return -EINVAL; + } +} + +static int packed_width_bytes(u32 format, short width) +{ + switch (format & I915_OVERLAY_DEPTH_MASK) { + case I915_OVERLAY_YUV422: + return width << 1; + default: + return -EINVAL; + } +} + +static int uv_hsubsampling(u32 format) +{ + switch (format & I915_OVERLAY_DEPTH_MASK) { + case I915_OVERLAY_YUV422: + case I915_OVERLAY_YUV420: + return 2; + case I915_OVERLAY_YUV411: + case I915_OVERLAY_YUV410: + return 4; + default: + return -EINVAL; + } +} + +static int uv_vsubsampling(u32 format) +{ + switch (format & I915_OVERLAY_DEPTH_MASK) { + case I915_OVERLAY_YUV420: + case I915_OVERLAY_YUV410: + return 2; + case I915_OVERLAY_YUV422: + case I915_OVERLAY_YUV411: + return 1; + default: + return -EINVAL; + } +} + +static u32 calc_swidthsw(struct drm_i915_private *dev_priv, u32 offset, u32 width) +{ + u32 sw; + + if (IS_GEN(dev_priv, 2)) + sw = ALIGN((offset & 31) + width, 32); + else + sw = ALIGN((offset & 63) + width, 64); + + if (sw == 0) + return 0; + + return (sw - 32) >> 3; +} + +static const u16 y_static_hcoeffs[N_PHASES][N_HORIZ_Y_TAPS] = { + [ 0] = { 0x3000, 0xb4a0, 0x1930, 0x1920, 0xb4a0, }, + [ 1] = { 0x3000, 0xb500, 0x19d0, 0x1880, 0xb440, }, + [ 2] = { 0x3000, 0xb540, 0x1a88, 0x2f80, 0xb3e0, }, + [ 3] = { 0x3000, 0xb580, 0x1b30, 0x2e20, 0xb380, }, + [ 4] = { 0x3000, 0xb5c0, 0x1bd8, 0x2cc0, 0xb320, }, + [ 5] = { 0x3020, 0xb5e0, 0x1c60, 0x2b80, 0xb2c0, }, + [ 6] = { 0x3020, 0xb5e0, 0x1cf8, 0x2a20, 0xb260, }, + [ 7] = { 0x3020, 0xb5e0, 0x1d80, 0x28e0, 0xb200, }, + [ 8] = { 0x3020, 0xb5c0, 0x1e08, 0x3f40, 0xb1c0, }, + [ 9] = { 0x3020, 0xb580, 0x1e78, 0x3ce0, 0xb160, }, + [10] = { 0x3040, 0xb520, 0x1ed8, 0x3aa0, 0xb120, }, + [11] = { 0x3040, 0xb4a0, 0x1f30, 0x3880, 0xb0e0, }, + [12] = { 0x3040, 0xb400, 0x1f78, 0x3680, 0xb0a0, }, + [13] = { 0x3020, 0xb340, 0x1fb8, 0x34a0, 0xb060, }, + [14] = { 0x3020, 0xb240, 0x1fe0, 0x32e0, 0xb040, }, + [15] = { 0x3020, 0xb140, 0x1ff8, 0x3160, 0xb020, }, + [16] = { 0xb000, 0x3000, 0x0800, 0x3000, 0xb000, }, +}; + +static const u16 uv_static_hcoeffs[N_PHASES][N_HORIZ_UV_TAPS] = { + [ 0] = { 0x3000, 0x1800, 0x1800, }, + [ 1] = { 0xb000, 0x18d0, 0x2e60, }, + [ 2] = { 0xb000, 0x1990, 0x2ce0, }, + [ 3] = { 0xb020, 0x1a68, 0x2b40, }, + [ 4] = { 0xb040, 0x1b20, 0x29e0, }, + [ 5] = { 0xb060, 0x1bd8, 0x2880, }, + [ 6] = { 0xb080, 0x1c88, 0x3e60, }, + [ 7] = { 0xb0a0, 0x1d28, 0x3c00, }, + [ 8] = { 0xb0c0, 0x1db8, 0x39e0, }, + [ 9] = { 0xb0e0, 0x1e40, 0x37e0, }, + [10] = { 0xb100, 0x1eb8, 0x3620, }, + [11] = { 0xb100, 0x1f18, 0x34a0, }, + [12] = { 0xb100, 0x1f68, 0x3360, }, + [13] = { 0xb0e0, 0x1fa8, 0x3240, }, + [14] = { 0xb0c0, 0x1fe0, 0x3140, }, + [15] = { 0xb060, 0x1ff0, 0x30a0, }, + [16] = { 0x3000, 0x0800, 0x3000, }, +}; + +static void update_polyphase_filter(struct overlay_registers __iomem *regs) +{ + memcpy_toio(regs->Y_HCOEFS, y_static_hcoeffs, sizeof(y_static_hcoeffs)); + memcpy_toio(regs->UV_HCOEFS, uv_static_hcoeffs, + sizeof(uv_static_hcoeffs)); +} + +static bool update_scaling_factors(struct intel_overlay *overlay, + struct overlay_registers __iomem *regs, + struct drm_intel_overlay_put_image *params) +{ + /* fixed point with a 12 bit shift */ + u32 xscale, yscale, xscale_UV, yscale_UV; +#define FP_SHIFT 12 +#define FRACT_MASK 0xfff + bool scale_changed = false; + int uv_hscale = uv_hsubsampling(params->flags); + int uv_vscale = uv_vsubsampling(params->flags); + + if (params->dst_width > 1) + xscale = ((params->src_scan_width - 1) << FP_SHIFT) / + params->dst_width; + else + xscale = 1 << FP_SHIFT; + + if (params->dst_height > 1) + yscale = ((params->src_scan_height - 1) << FP_SHIFT) / + params->dst_height; + else + yscale = 1 << FP_SHIFT; + + /*if (params->format & I915_OVERLAY_YUV_PLANAR) {*/ + xscale_UV = xscale/uv_hscale; + yscale_UV = yscale/uv_vscale; + /* make the Y scale to UV scale ratio an exact multiply */ + xscale = xscale_UV * uv_hscale; + yscale = yscale_UV * uv_vscale; + /*} else { + xscale_UV = 0; + yscale_UV = 0; + }*/ + + if (xscale != overlay->old_xscale || yscale != overlay->old_yscale) + scale_changed = true; + overlay->old_xscale = xscale; + overlay->old_yscale = yscale; + + iowrite32(((yscale & FRACT_MASK) << 20) | + ((xscale >> FP_SHIFT) << 16) | + ((xscale & FRACT_MASK) << 3), + ®s->YRGBSCALE); + + iowrite32(((yscale_UV & FRACT_MASK) << 20) | + ((xscale_UV >> FP_SHIFT) << 16) | + ((xscale_UV & FRACT_MASK) << 3), + ®s->UVSCALE); + + iowrite32((((yscale >> FP_SHIFT) << 16) | + ((yscale_UV >> FP_SHIFT) << 0)), + ®s->UVSCALEV); + + if (scale_changed) + update_polyphase_filter(regs); + + return scale_changed; +} + +static void update_colorkey(struct intel_overlay *overlay, + struct overlay_registers __iomem *regs) +{ + const struct intel_plane_state *state = + to_intel_plane_state(overlay->crtc->base.primary->state); + u32 key = overlay->color_key; + u32 format = 0; + u32 flags = 0; + + if (overlay->color_key_enabled) + flags |= DST_KEY_ENABLE; + + if (state->base.visible) + format = state->base.fb->format->format; + + switch (format) { + case DRM_FORMAT_C8: + key = 0; + flags |= CLK_RGB8I_MASK; + break; + case DRM_FORMAT_XRGB1555: + key = RGB15_TO_COLORKEY(key); + flags |= CLK_RGB15_MASK; + break; + case DRM_FORMAT_RGB565: + key = RGB16_TO_COLORKEY(key); + flags |= CLK_RGB16_MASK; + break; + default: + flags |= CLK_RGB24_MASK; + break; + } + + iowrite32(key, ®s->DCLRKV); + iowrite32(flags, ®s->DCLRKM); +} + +static u32 overlay_cmd_reg(struct drm_intel_overlay_put_image *params) +{ + u32 cmd = OCMD_ENABLE | OCMD_BUF_TYPE_FRAME | OCMD_BUFFER0; + + if (params->flags & I915_OVERLAY_YUV_PLANAR) { + switch (params->flags & I915_OVERLAY_DEPTH_MASK) { + case I915_OVERLAY_YUV422: + cmd |= OCMD_YUV_422_PLANAR; + break; + case I915_OVERLAY_YUV420: + cmd |= OCMD_YUV_420_PLANAR; + break; + case I915_OVERLAY_YUV411: + case I915_OVERLAY_YUV410: + cmd |= OCMD_YUV_410_PLANAR; + break; + } + } else { /* YUV packed */ + switch (params->flags & I915_OVERLAY_DEPTH_MASK) { + case I915_OVERLAY_YUV422: + cmd |= OCMD_YUV_422_PACKED; + break; + case I915_OVERLAY_YUV411: + cmd |= OCMD_YUV_411_PACKED; + break; + } + + switch (params->flags & I915_OVERLAY_SWAP_MASK) { + case I915_OVERLAY_NO_SWAP: + break; + case I915_OVERLAY_UV_SWAP: + cmd |= OCMD_UV_SWAP; + break; + case I915_OVERLAY_Y_SWAP: + cmd |= OCMD_Y_SWAP; + break; + case I915_OVERLAY_Y_AND_UV_SWAP: + cmd |= OCMD_Y_AND_UV_SWAP; + break; + } + } + + return cmd; +} + +static int intel_overlay_do_put_image(struct intel_overlay *overlay, + struct drm_i915_gem_object *new_bo, + struct drm_intel_overlay_put_image *params) +{ + struct overlay_registers __iomem *regs = overlay->regs; + struct drm_i915_private *dev_priv = overlay->i915; + u32 swidth, swidthsw, sheight, ostride; + enum pipe pipe = overlay->crtc->pipe; + bool scale_changed = false; + struct i915_vma *vma; + int ret, tmp_width; + + lockdep_assert_held(&dev_priv->drm.struct_mutex); + WARN_ON(!drm_modeset_is_locked(&dev_priv->drm.mode_config.connection_mutex)); + + ret = intel_overlay_release_old_vid(overlay); + if (ret != 0) + return ret; + + atomic_inc(&dev_priv->gpu_error.pending_fb_pin); + + i915_gem_object_lock(new_bo); + vma = i915_gem_object_pin_to_display_plane(new_bo, + 0, NULL, PIN_MAPPABLE); + i915_gem_object_unlock(new_bo); + if (IS_ERR(vma)) { + ret = PTR_ERR(vma); + goto out_pin_section; + } + intel_fb_obj_flush(new_bo, ORIGIN_DIRTYFB); + + ret = i915_vma_put_fence(vma); + if (ret) + goto out_unpin; + + if (!overlay->active) { + u32 oconfig; + + oconfig = OCONF_CC_OUT_8BIT; + if (IS_GEN(dev_priv, 4)) + oconfig |= OCONF_CSC_MODE_BT709; + oconfig |= pipe == 0 ? + OCONF_PIPE_A : OCONF_PIPE_B; + iowrite32(oconfig, ®s->OCONFIG); + + ret = intel_overlay_on(overlay); + if (ret != 0) + goto out_unpin; + } + + iowrite32(params->dst_y << 16 | params->dst_x, ®s->DWINPOS); + iowrite32(params->dst_height << 16 | params->dst_width, ®s->DWINSZ); + + if (params->flags & I915_OVERLAY_YUV_PACKED) + tmp_width = packed_width_bytes(params->flags, + params->src_width); + else + tmp_width = params->src_width; + + swidth = params->src_width; + swidthsw = calc_swidthsw(dev_priv, params->offset_Y, tmp_width); + sheight = params->src_height; + iowrite32(i915_ggtt_offset(vma) + params->offset_Y, ®s->OBUF_0Y); + ostride = params->stride_Y; + + if (params->flags & I915_OVERLAY_YUV_PLANAR) { + int uv_hscale = uv_hsubsampling(params->flags); + int uv_vscale = uv_vsubsampling(params->flags); + u32 tmp_U, tmp_V; + + swidth |= (params->src_width / uv_hscale) << 16; + sheight |= (params->src_height / uv_vscale) << 16; + + tmp_U = calc_swidthsw(dev_priv, params->offset_U, + params->src_width / uv_hscale); + tmp_V = calc_swidthsw(dev_priv, params->offset_V, + params->src_width / uv_hscale); + swidthsw |= max(tmp_U, tmp_V) << 16; + + iowrite32(i915_ggtt_offset(vma) + params->offset_U, + ®s->OBUF_0U); + iowrite32(i915_ggtt_offset(vma) + params->offset_V, + ®s->OBUF_0V); + + ostride |= params->stride_UV << 16; + } + + iowrite32(swidth, ®s->SWIDTH); + iowrite32(swidthsw, ®s->SWIDTHSW); + iowrite32(sheight, ®s->SHEIGHT); + iowrite32(ostride, ®s->OSTRIDE); + + scale_changed = update_scaling_factors(overlay, regs, params); + + update_colorkey(overlay, regs); + + iowrite32(overlay_cmd_reg(params), ®s->OCMD); + + ret = intel_overlay_continue(overlay, vma, scale_changed); + if (ret) + goto out_unpin; + + return 0; + +out_unpin: + i915_gem_object_unpin_from_display_plane(vma); +out_pin_section: + atomic_dec(&dev_priv->gpu_error.pending_fb_pin); + + return ret; +} + +int intel_overlay_switch_off(struct intel_overlay *overlay) +{ + struct drm_i915_private *dev_priv = overlay->i915; + int ret; + + lockdep_assert_held(&dev_priv->drm.struct_mutex); + WARN_ON(!drm_modeset_is_locked(&dev_priv->drm.mode_config.connection_mutex)); + + ret = intel_overlay_recover_from_interrupt(overlay); + if (ret != 0) + return ret; + + if (!overlay->active) + return 0; + + ret = intel_overlay_release_old_vid(overlay); + if (ret != 0) + return ret; + + iowrite32(0, &overlay->regs->OCMD); + + return intel_overlay_off(overlay); +} + +static int check_overlay_possible_on_crtc(struct intel_overlay *overlay, + struct intel_crtc *crtc) +{ + if (!crtc->active) + return -EINVAL; + + /* can't use the overlay with double wide pipe */ + if (crtc->config->double_wide) + return -EINVAL; + + return 0; +} + +static void update_pfit_vscale_ratio(struct intel_overlay *overlay) +{ + struct drm_i915_private *dev_priv = overlay->i915; + u32 pfit_control = I915_READ(PFIT_CONTROL); + u32 ratio; + + /* XXX: This is not the same logic as in the xorg driver, but more in + * line with the intel documentation for the i965 + */ + if (INTEL_GEN(dev_priv) >= 4) { + /* on i965 use the PGM reg to read out the autoscaler values */ + ratio = I915_READ(PFIT_PGM_RATIOS) >> PFIT_VERT_SCALE_SHIFT_965; + } else { + if (pfit_control & VERT_AUTO_SCALE) + ratio = I915_READ(PFIT_AUTO_RATIOS); + else + ratio = I915_READ(PFIT_PGM_RATIOS); + ratio >>= PFIT_VERT_SCALE_SHIFT; + } + + overlay->pfit_vscale_ratio = ratio; +} + +static int check_overlay_dst(struct intel_overlay *overlay, + struct drm_intel_overlay_put_image *rec) +{ + const struct intel_crtc_state *pipe_config = + overlay->crtc->config; + + if (rec->dst_x < pipe_config->pipe_src_w && + rec->dst_x + rec->dst_width <= pipe_config->pipe_src_w && + rec->dst_y < pipe_config->pipe_src_h && + rec->dst_y + rec->dst_height <= pipe_config->pipe_src_h) + return 0; + else + return -EINVAL; +} + +static int check_overlay_scaling(struct drm_intel_overlay_put_image *rec) +{ + u32 tmp; + + /* downscaling limit is 8.0 */ + tmp = ((rec->src_scan_height << 16) / rec->dst_height) >> 16; + if (tmp > 7) + return -EINVAL; + + tmp = ((rec->src_scan_width << 16) / rec->dst_width) >> 16; + if (tmp > 7) + return -EINVAL; + + return 0; +} + +static int check_overlay_src(struct drm_i915_private *dev_priv, + struct drm_intel_overlay_put_image *rec, + struct drm_i915_gem_object *new_bo) +{ + int uv_hscale = uv_hsubsampling(rec->flags); + int uv_vscale = uv_vsubsampling(rec->flags); + u32 stride_mask; + int depth; + u32 tmp; + + /* check src dimensions */ + if (IS_I845G(dev_priv) || IS_I830(dev_priv)) { + if (rec->src_height > IMAGE_MAX_HEIGHT_LEGACY || + rec->src_width > IMAGE_MAX_WIDTH_LEGACY) + return -EINVAL; + } else { + if (rec->src_height > IMAGE_MAX_HEIGHT || + rec->src_width > IMAGE_MAX_WIDTH) + return -EINVAL; + } + + /* better safe than sorry, use 4 as the maximal subsampling ratio */ + if (rec->src_height < N_VERT_Y_TAPS*4 || + rec->src_width < N_HORIZ_Y_TAPS*4) + return -EINVAL; + + /* check alignment constraints */ + switch (rec->flags & I915_OVERLAY_TYPE_MASK) { + case I915_OVERLAY_RGB: + /* not implemented */ + return -EINVAL; + + case I915_OVERLAY_YUV_PACKED: + if (uv_vscale != 1) + return -EINVAL; + + depth = packed_depth_bytes(rec->flags); + if (depth < 0) + return depth; + + /* ignore UV planes */ + rec->stride_UV = 0; + rec->offset_U = 0; + rec->offset_V = 0; + /* check pixel alignment */ + if (rec->offset_Y % depth) + return -EINVAL; + break; + + case I915_OVERLAY_YUV_PLANAR: + if (uv_vscale < 0 || uv_hscale < 0) + return -EINVAL; + /* no offset restrictions for planar formats */ + break; + + default: + return -EINVAL; + } + + if (rec->src_width % uv_hscale) + return -EINVAL; + + /* stride checking */ + if (IS_I830(dev_priv) || IS_I845G(dev_priv)) + stride_mask = 255; + else + stride_mask = 63; + + if (rec->stride_Y & stride_mask || rec->stride_UV & stride_mask) + return -EINVAL; + if (IS_GEN(dev_priv, 4) && rec->stride_Y < 512) + return -EINVAL; + + tmp = (rec->flags & I915_OVERLAY_TYPE_MASK) == I915_OVERLAY_YUV_PLANAR ? + 4096 : 8192; + if (rec->stride_Y > tmp || rec->stride_UV > 2*1024) + return -EINVAL; + + /* check buffer dimensions */ + switch (rec->flags & I915_OVERLAY_TYPE_MASK) { + case I915_OVERLAY_RGB: + case I915_OVERLAY_YUV_PACKED: + /* always 4 Y values per depth pixels */ + if (packed_width_bytes(rec->flags, rec->src_width) > rec->stride_Y) + return -EINVAL; + + tmp = rec->stride_Y*rec->src_height; + if (rec->offset_Y + tmp > new_bo->base.size) + return -EINVAL; + break; + + case I915_OVERLAY_YUV_PLANAR: + if (rec->src_width > rec->stride_Y) + return -EINVAL; + if (rec->src_width/uv_hscale > rec->stride_UV) + return -EINVAL; + + tmp = rec->stride_Y * rec->src_height; + if (rec->offset_Y + tmp > new_bo->base.size) + return -EINVAL; + + tmp = rec->stride_UV * (rec->src_height / uv_vscale); + if (rec->offset_U + tmp > new_bo->base.size || + rec->offset_V + tmp > new_bo->base.size) + return -EINVAL; + break; + } + + return 0; +} + +int intel_overlay_put_image_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_intel_overlay_put_image *params = data; + struct drm_i915_private *dev_priv = to_i915(dev); + struct intel_overlay *overlay; + struct drm_crtc *drmmode_crtc; + struct intel_crtc *crtc; + struct drm_i915_gem_object *new_bo; + int ret; + + overlay = dev_priv->overlay; + if (!overlay) { + DRM_DEBUG("userspace bug: no overlay\n"); + return -ENODEV; + } + + if (!(params->flags & I915_OVERLAY_ENABLE)) { + drm_modeset_lock_all(dev); + mutex_lock(&dev->struct_mutex); + + ret = intel_overlay_switch_off(overlay); + + mutex_unlock(&dev->struct_mutex); + drm_modeset_unlock_all(dev); + + return ret; + } + + drmmode_crtc = drm_crtc_find(dev, file_priv, params->crtc_id); + if (!drmmode_crtc) + return -ENOENT; + crtc = to_intel_crtc(drmmode_crtc); + + new_bo = i915_gem_object_lookup(file_priv, params->bo_handle); + if (!new_bo) + return -ENOENT; + + drm_modeset_lock_all(dev); + mutex_lock(&dev->struct_mutex); + + if (i915_gem_object_is_tiled(new_bo)) { + DRM_DEBUG_KMS("buffer used for overlay image can not be tiled\n"); + ret = -EINVAL; + goto out_unlock; + } + + ret = intel_overlay_recover_from_interrupt(overlay); + if (ret != 0) + goto out_unlock; + + if (overlay->crtc != crtc) { + ret = intel_overlay_switch_off(overlay); + if (ret != 0) + goto out_unlock; + + ret = check_overlay_possible_on_crtc(overlay, crtc); + if (ret != 0) + goto out_unlock; + + overlay->crtc = crtc; + crtc->overlay = overlay; + + /* line too wide, i.e. one-line-mode */ + if (crtc->config->pipe_src_w > 1024 && + crtc->config->gmch_pfit.control & PFIT_ENABLE) { + overlay->pfit_active = true; + update_pfit_vscale_ratio(overlay); + } else + overlay->pfit_active = false; + } + + ret = check_overlay_dst(overlay, params); + if (ret != 0) + goto out_unlock; + + if (overlay->pfit_active) { + params->dst_y = (((u32)params->dst_y << 12) / + overlay->pfit_vscale_ratio); + /* shifting right rounds downwards, so add 1 */ + params->dst_height = (((u32)params->dst_height << 12) / + overlay->pfit_vscale_ratio) + 1; + } + + if (params->src_scan_height > params->src_height || + params->src_scan_width > params->src_width) { + ret = -EINVAL; + goto out_unlock; + } + + ret = check_overlay_src(dev_priv, params, new_bo); + if (ret != 0) + goto out_unlock; + + /* Check scaling after src size to prevent a divide-by-zero. */ + ret = check_overlay_scaling(params); + if (ret != 0) + goto out_unlock; + + ret = intel_overlay_do_put_image(overlay, new_bo, params); + if (ret != 0) + goto out_unlock; + + mutex_unlock(&dev->struct_mutex); + drm_modeset_unlock_all(dev); + i915_gem_object_put(new_bo); + + return 0; + +out_unlock: + mutex_unlock(&dev->struct_mutex); + drm_modeset_unlock_all(dev); + i915_gem_object_put(new_bo); + + return ret; +} + +static void update_reg_attrs(struct intel_overlay *overlay, + struct overlay_registers __iomem *regs) +{ + iowrite32((overlay->contrast << 18) | (overlay->brightness & 0xff), + ®s->OCLRC0); + iowrite32(overlay->saturation, ®s->OCLRC1); +} + +static bool check_gamma_bounds(u32 gamma1, u32 gamma2) +{ + int i; + + if (gamma1 & 0xff000000 || gamma2 & 0xff000000) + return false; + + for (i = 0; i < 3; i++) { + if (((gamma1 >> i*8) & 0xff) >= ((gamma2 >> i*8) & 0xff)) + return false; + } + + return true; +} + +static bool check_gamma5_errata(u32 gamma5) +{ + int i; + + for (i = 0; i < 3; i++) { + if (((gamma5 >> i*8) & 0xff) == 0x80) + return false; + } + + return true; +} + +static int check_gamma(struct drm_intel_overlay_attrs *attrs) +{ + if (!check_gamma_bounds(0, attrs->gamma0) || + !check_gamma_bounds(attrs->gamma0, attrs->gamma1) || + !check_gamma_bounds(attrs->gamma1, attrs->gamma2) || + !check_gamma_bounds(attrs->gamma2, attrs->gamma3) || + !check_gamma_bounds(attrs->gamma3, attrs->gamma4) || + !check_gamma_bounds(attrs->gamma4, attrs->gamma5) || + !check_gamma_bounds(attrs->gamma5, 0x00ffffff)) + return -EINVAL; + + if (!check_gamma5_errata(attrs->gamma5)) + return -EINVAL; + + return 0; +} + +int intel_overlay_attrs_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_intel_overlay_attrs *attrs = data; + struct drm_i915_private *dev_priv = to_i915(dev); + struct intel_overlay *overlay; + int ret; + + overlay = dev_priv->overlay; + if (!overlay) { + DRM_DEBUG("userspace bug: no overlay\n"); + return -ENODEV; + } + + drm_modeset_lock_all(dev); + mutex_lock(&dev->struct_mutex); + + ret = -EINVAL; + if (!(attrs->flags & I915_OVERLAY_UPDATE_ATTRS)) { + attrs->color_key = overlay->color_key; + attrs->brightness = overlay->brightness; + attrs->contrast = overlay->contrast; + attrs->saturation = overlay->saturation; + + if (!IS_GEN(dev_priv, 2)) { + attrs->gamma0 = I915_READ(OGAMC0); + attrs->gamma1 = I915_READ(OGAMC1); + attrs->gamma2 = I915_READ(OGAMC2); + attrs->gamma3 = I915_READ(OGAMC3); + attrs->gamma4 = I915_READ(OGAMC4); + attrs->gamma5 = I915_READ(OGAMC5); + } + } else { + if (attrs->brightness < -128 || attrs->brightness > 127) + goto out_unlock; + if (attrs->contrast > 255) + goto out_unlock; + if (attrs->saturation > 1023) + goto out_unlock; + + overlay->color_key = attrs->color_key; + overlay->brightness = attrs->brightness; + overlay->contrast = attrs->contrast; + overlay->saturation = attrs->saturation; + + update_reg_attrs(overlay, overlay->regs); + + if (attrs->flags & I915_OVERLAY_UPDATE_GAMMA) { + if (IS_GEN(dev_priv, 2)) + goto out_unlock; + + if (overlay->active) { + ret = -EBUSY; + goto out_unlock; + } + + ret = check_gamma(attrs); + if (ret) + goto out_unlock; + + I915_WRITE(OGAMC0, attrs->gamma0); + I915_WRITE(OGAMC1, attrs->gamma1); + I915_WRITE(OGAMC2, attrs->gamma2); + I915_WRITE(OGAMC3, attrs->gamma3); + I915_WRITE(OGAMC4, attrs->gamma4); + I915_WRITE(OGAMC5, attrs->gamma5); + } + } + overlay->color_key_enabled = (attrs->flags & I915_OVERLAY_DISABLE_DEST_COLORKEY) == 0; + + ret = 0; +out_unlock: + mutex_unlock(&dev->struct_mutex); + drm_modeset_unlock_all(dev); + + return ret; +} + +static int get_registers(struct intel_overlay *overlay, bool use_phys) +{ + struct drm_i915_private *i915 = overlay->i915; + struct drm_i915_gem_object *obj; + struct i915_vma *vma; + int err; + + mutex_lock(&i915->drm.struct_mutex); + + obj = i915_gem_object_create_stolen(i915, PAGE_SIZE); + if (obj == NULL) + obj = i915_gem_object_create_internal(i915, PAGE_SIZE); + if (IS_ERR(obj)) { + err = PTR_ERR(obj); + goto err_unlock; + } + + vma = i915_gem_object_ggtt_pin(obj, NULL, 0, 0, PIN_MAPPABLE); + if (IS_ERR(vma)) { + err = PTR_ERR(vma); + goto err_put_bo; + } + + if (use_phys) + overlay->flip_addr = sg_dma_address(obj->mm.pages->sgl); + else + overlay->flip_addr = i915_ggtt_offset(vma); + overlay->regs = i915_vma_pin_iomap(vma); + i915_vma_unpin(vma); + + if (IS_ERR(overlay->regs)) { + err = PTR_ERR(overlay->regs); + goto err_put_bo; + } + + overlay->reg_bo = obj; + mutex_unlock(&i915->drm.struct_mutex); + return 0; + +err_put_bo: + i915_gem_object_put(obj); +err_unlock: + mutex_unlock(&i915->drm.struct_mutex); + return err; +} + +void intel_overlay_setup(struct drm_i915_private *dev_priv) +{ + struct intel_overlay *overlay; + int ret; + + if (!HAS_OVERLAY(dev_priv)) + return; + + overlay = kzalloc(sizeof(*overlay), GFP_KERNEL); + if (!overlay) + return; + + overlay->i915 = dev_priv; + + overlay->color_key = 0x0101fe; + overlay->color_key_enabled = true; + overlay->brightness = -19; + overlay->contrast = 75; + overlay->saturation = 146; + + INIT_ACTIVE_REQUEST(&overlay->last_flip); + + ret = get_registers(overlay, OVERLAY_NEEDS_PHYSICAL(dev_priv)); + if (ret) + goto out_free; + + memset_io(overlay->regs, 0, sizeof(struct overlay_registers)); + update_polyphase_filter(overlay->regs); + update_reg_attrs(overlay, overlay->regs); + + dev_priv->overlay = overlay; + DRM_INFO("Initialized overlay support.\n"); + return; + +out_free: + kfree(overlay); +} + +void intel_overlay_cleanup(struct drm_i915_private *dev_priv) +{ + struct intel_overlay *overlay; + + overlay = fetch_and_zero(&dev_priv->overlay); + if (!overlay) + return; + + /* + * The bo's should be free'd by the generic code already. + * Furthermore modesetting teardown happens beforehand so the + * hardware should be off already. + */ + WARN_ON(overlay->active); + + i915_gem_object_put(overlay->reg_bo); + + kfree(overlay); +} + +#if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR) + +struct intel_overlay_error_state { + struct overlay_registers regs; + unsigned long base; + u32 dovsta; + u32 isr; +}; + +struct intel_overlay_error_state * +intel_overlay_capture_error_state(struct drm_i915_private *dev_priv) +{ + struct intel_overlay *overlay = dev_priv->overlay; + struct intel_overlay_error_state *error; + + if (!overlay || !overlay->active) + return NULL; + + error = kmalloc(sizeof(*error), GFP_ATOMIC); + if (error == NULL) + return NULL; + + error->dovsta = I915_READ(DOVSTA); + error->isr = I915_READ(GEN2_ISR); + error->base = overlay->flip_addr; + + memcpy_fromio(&error->regs, overlay->regs, sizeof(error->regs)); + + return error; +} + +void +intel_overlay_print_error_state(struct drm_i915_error_state_buf *m, + struct intel_overlay_error_state *error) +{ + i915_error_printf(m, "Overlay, status: 0x%08x, interrupt: 0x%08x\n", + error->dovsta, error->isr); + i915_error_printf(m, " Register file at 0x%08lx:\n", + error->base); + +#define P(x) i915_error_printf(m, " " #x ": 0x%08x\n", error->regs.x) + P(OBUF_0Y); + P(OBUF_1Y); + P(OBUF_0U); + P(OBUF_0V); + P(OBUF_1U); + P(OBUF_1V); + P(OSTRIDE); + P(YRGB_VPH); + P(UV_VPH); + P(HORZ_PH); + P(INIT_PHS); + P(DWINPOS); + P(DWINSZ); + P(SWIDTH); + P(SWIDTHSW); + P(SHEIGHT); + P(YRGBSCALE); + P(UVSCALE); + P(OCLRC0); + P(OCLRC1); + P(DCLRKV); + P(DCLRKM); + P(SCLRKVH); + P(SCLRKVL); + P(SCLRKEN); + P(OCONFIG); + P(OCMD); + P(OSTART_0Y); + P(OSTART_1Y); + P(OSTART_0U); + P(OSTART_0V); + P(OSTART_1U); + P(OSTART_1V); + P(OTILEOFF_0Y); + P(OTILEOFF_1Y); + P(OTILEOFF_0U); + P(OTILEOFF_0V); + P(OTILEOFF_1U); + P(OTILEOFF_1V); + P(FASTHSCALE); + P(UVSCALEV); +#undef P +} + +#endif |