From: Patrik Jakobsson Date: Mon, 21 May 2012 14:27:30 +0000 (+0100) Subject: gma500: handle poulsbo cursor restriction X-Git-Tag: v3.12-rc1~3104^2~21 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=bc794829141f28e14fe7d0e07e35870bd9aee78c;p=kernel%2Fkernel-generic.git gma500: handle poulsbo cursor restriction Poulsbo needs a physical address in the cursor base register. We allocate a stolen memory buffer and copy the cursor image provided by userspace into it. When/If we get our own userspace driver we can map this stolen memory directly. The patch also adds a mark in chip ops so we can identify devices that has this requirement. Signed-off-by: Patrik Jakobsson Signed-off-by: Dave Airlie --- diff --git a/drivers/gpu/drm/gma500/cdv_device.c b/drivers/gpu/drm/gma500/cdv_device.c index 8e39330..9764045 100644 --- a/drivers/gpu/drm/gma500/cdv_device.c +++ b/drivers/gpu/drm/gma500/cdv_device.c @@ -563,6 +563,7 @@ const struct psb_ops cdv_chip_ops = { .crtcs = 2, .hdmi_mask = (1 << 0) | (1 << 1), .lvds_mask = (1 << 1), + .cursor_needs_phys = 0, .sgx_offset = MRST_SGX_OFFSET, .chip_setup = cdv_chip_setup, .errata = cdv_errata, diff --git a/drivers/gpu/drm/gma500/mdfld_device.c b/drivers/gpu/drm/gma500/mdfld_device.c index 2d8e741..265ad0d 100644 --- a/drivers/gpu/drm/gma500/mdfld_device.c +++ b/drivers/gpu/drm/gma500/mdfld_device.c @@ -531,6 +531,7 @@ const struct psb_ops mdfld_chip_ops = { .crtcs = 3, .lvds_mask = (1 << 1), .hdmi_mask = (1 << 1), + .cursor_needs_phys = 0, .sgx_offset = MRST_SGX_OFFSET, .chip_setup = mdfld_chip_setup, diff --git a/drivers/gpu/drm/gma500/oaktrail_device.c b/drivers/gpu/drm/gma500/oaktrail_device.c index 7a8ff8e..0f9b7db 100644 --- a/drivers/gpu/drm/gma500/oaktrail_device.c +++ b/drivers/gpu/drm/gma500/oaktrail_device.c @@ -544,6 +544,7 @@ const struct psb_ops oaktrail_chip_ops = { .crtcs = 2, .hdmi_mask = (1 << 0), .lvds_mask = (1 << 0), + .cursor_needs_phys = 0, .sgx_offset = MRST_SGX_OFFSET, .chip_setup = oaktrail_chip_setup, diff --git a/drivers/gpu/drm/gma500/psb_device.c b/drivers/gpu/drm/gma500/psb_device.c index 1726c04..2a3e2da 100644 --- a/drivers/gpu/drm/gma500/psb_device.c +++ b/drivers/gpu/drm/gma500/psb_device.c @@ -373,6 +373,7 @@ const struct psb_ops psb_chip_ops = { .crtcs = 2, .hdmi_mask = (1 << 0), .lvds_mask = (1 << 1), + .cursor_needs_phys = 1, .sgx_offset = PSB_SGX_OFFSET, .chip_setup = psb_chip_setup, .chip_teardown = psb_chip_teardown, diff --git a/drivers/gpu/drm/gma500/psb_drv.h b/drivers/gpu/drm/gma500/psb_drv.h index a1b0c0b..1bd115e 100644 --- a/drivers/gpu/drm/gma500/psb_drv.h +++ b/drivers/gpu/drm/gma500/psb_drv.h @@ -655,6 +655,7 @@ struct psb_ops { int sgx_offset; /* Base offset of SGX device */ int hdmi_mask; /* Mask of HDMI CRTCs */ int lvds_mask; /* Mask of LVDS CRTCs */ + int cursor_needs_phys; /* If cursor base reg need physical address */ /* Sub functions */ struct drm_crtc_helper_funcs const *crtc_helper; diff --git a/drivers/gpu/drm/gma500/psb_intel_display.c b/drivers/gpu/drm/gma500/psb_intel_display.c index f3a3160..36c3c99 100644 --- a/drivers/gpu/drm/gma500/psb_intel_display.c +++ b/drivers/gpu/drm/gma500/psb_intel_display.c @@ -928,6 +928,7 @@ static int psb_intel_crtc_cursor_set(struct drm_crtc *crtc, uint32_t width, uint32_t height) { struct drm_device *dev = crtc->dev; + struct drm_psb_private *dev_priv = dev->dev_private; struct psb_intel_crtc *psb_intel_crtc = to_psb_intel_crtc(crtc); int pipe = psb_intel_crtc->pipe; uint32_t control = (pipe == 0) ? CURACNTR : CURBCNTR; @@ -935,8 +936,10 @@ static int psb_intel_crtc_cursor_set(struct drm_crtc *crtc, uint32_t temp; size_t addr = 0; struct gtt_range *gt; + struct gtt_range *cursor_gt = psb_intel_crtc->cursor_gt; struct drm_gem_object *obj; - int ret; + void *tmp_dst, *tmp_src; + int ret, i, cursor_pages; /* if we want to turn of the cursor ignore width and height */ if (!handle) { @@ -985,10 +988,32 @@ static int psb_intel_crtc_cursor_set(struct drm_crtc *crtc, return ret; } + if (dev_priv->ops->cursor_needs_phys) { + if (cursor_gt == NULL) { + dev_err(dev->dev, "No hardware cursor mem available"); + return -ENOMEM; + } - addr = gt->offset; /* Or resource.start ??? */ + /* Prevent overflow */ + if (gt->npage > 4) + cursor_pages = 4; + else + cursor_pages = gt->npage; + + /* Copy the cursor to cursor mem */ + tmp_dst = dev_priv->vram_addr + cursor_gt->offset; + for (i = 0; i < cursor_pages; i++) { + tmp_src = kmap(gt->pages[i]); + memcpy(tmp_dst, tmp_src, PAGE_SIZE); + kunmap(gt->pages[i]); + tmp_dst += PAGE_SIZE; + } - psb_intel_crtc->cursor_addr = addr; + addr = psb_intel_crtc->cursor_addr; + } else { + addr = gt->offset; /* Or resource.start ??? */ + psb_intel_crtc->cursor_addr = addr; + } temp = 0; /* set the pipe for the cursor */ @@ -1213,6 +1238,9 @@ void psb_intel_crtc_destroy(struct drm_crtc *crtc) drm_gem_object_unreference(psb_intel_crtc->cursor_obj); psb_intel_crtc->cursor_obj = NULL; } + + if (psb_intel_crtc->cursor_gt != NULL) + psb_gtt_free_range(crtc->dev, psb_intel_crtc->cursor_gt); kfree(psb_intel_crtc->crtc_state); drm_crtc_cleanup(crtc); kfree(psb_intel_crtc); @@ -1241,13 +1269,33 @@ const struct drm_crtc_funcs psb_intel_crtc_funcs = { * Set the default value of cursor control and base register * to zero. This is a workaround for h/w defect on Oaktrail */ -static void psb_intel_cursor_init(struct drm_device *dev, int pipe) +static void psb_intel_cursor_init(struct drm_device *dev, + struct psb_intel_crtc *psb_intel_crtc) { + struct drm_psb_private *dev_priv = dev->dev_private; u32 control[3] = { CURACNTR, CURBCNTR, CURCCNTR }; u32 base[3] = { CURABASE, CURBBASE, CURCBASE }; + struct gtt_range *cursor_gt; + + if (dev_priv->ops->cursor_needs_phys) { + /* Allocate 4 pages of stolen mem for a hardware cursor. That + * is enough for the 64 x 64 ARGB cursors we support. + */ + cursor_gt = psb_gtt_alloc_range(dev, 4 * PAGE_SIZE, "cursor", 1); + if (!cursor_gt) { + psb_intel_crtc->cursor_gt = NULL; + goto out; + } + psb_intel_crtc->cursor_gt = cursor_gt; + psb_intel_crtc->cursor_addr = dev_priv->stolen_base + + cursor_gt->offset; + } else { + psb_intel_crtc->cursor_gt = NULL; + } - REG_WRITE(control[pipe], 0); - REG_WRITE(base[pipe], 0); +out: + REG_WRITE(control[psb_intel_crtc->pipe], 0); + REG_WRITE(base[psb_intel_crtc->pipe], 0); } void psb_intel_crtc_init(struct drm_device *dev, int pipe, @@ -1313,7 +1361,7 @@ void psb_intel_crtc_init(struct drm_device *dev, int pipe, psb_intel_crtc->mode_set.connectors = (struct drm_connector **) (psb_intel_crtc + 1); psb_intel_crtc->mode_set.num_connectors = 0; - psb_intel_cursor_init(dev, pipe); + psb_intel_cursor_init(dev, psb_intel_crtc); } int psb_intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data, diff --git a/drivers/gpu/drm/gma500/psb_intel_drv.h b/drivers/gpu/drm/gma500/psb_intel_drv.h index 81852b4..2515f83 100644 --- a/drivers/gpu/drm/gma500/psb_intel_drv.h +++ b/drivers/gpu/drm/gma500/psb_intel_drv.h @@ -106,11 +106,6 @@ struct psb_intel_mode_device { size_t(*bo_offset) (struct drm_device *dev, void *bo); /* - * Cursor (Can go ?) - */ - int cursor_needs_physical; - - /* * LVDS info */ int backlight_duty_cycle; /* restore backlight to this value */ @@ -176,6 +171,7 @@ struct psb_intel_crtc { int pipe; int plane; uint32_t cursor_addr; + struct gtt_range *cursor_gt; u8 lut_r[256], lut_g[256], lut_b[256]; u8 lut_adj[256]; struct psb_intel_framebuffer *fbdev_fb;