From patchwork Tue Jun 28 12:27:53 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shobhit Kumar X-Patchwork-Id: 9203075 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 91F7B608A6 for ; Tue, 28 Jun 2016 12:27:59 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 81B9A285CA for ; Tue, 28 Jun 2016 12:27:59 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 768A0285FF; Tue, 28 Jun 2016 12:27:59 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 10228285F3 for ; Tue, 28 Jun 2016 12:27:59 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id AD2BE6E573; Tue, 28 Jun 2016 12:27:57 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTP id EA1E66E574 for ; Tue, 28 Jun 2016 12:27:55 +0000 (UTC) Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga104.fm.intel.com with ESMTP; 28 Jun 2016 05:27:55 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos; i="5.26,541,1459839600"; d="scan'208"; a="1011195156" Received: from shobhit-desk.iind.intel.com ([10.223.19.105]) by fmsmga002.fm.intel.com with ESMTP; 28 Jun 2016 05:27:54 -0700 From: Shobhit Kumar To: intel-gfx@lists.freedesktop.org Date: Tue, 28 Jun 2016 17:57:53 +0530 Message-Id: <1467116873-31987-1-git-send-email-shobhit.kumar@linux.intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <20160613142227.GB1338@phenom.ffwll.local> References: <20160613142227.GB1338@phenom.ffwll.local> Cc: deepak.s@intel.com, Shobhit Kumar , akshu.agrawal@intel.com Subject: [Intel-gfx] [RFC] drm/i915/chv: Clip cursor for CHV pipe C HW Cursor pos < 0 X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP From: Shobhit Kumar CHV pipe C hits underrun when we get negative crtc_x values of cursor. To avoid this we clip and shift the cursor image by negative crtc_x value. v2: Make a copy of cursor plane state and allocate new gem object and fb for clipped cursor and use that in case of negative cursor position Signed-off-by: Akshu Agrawal Signed-off-by: Shobhit Kumar --- drivers/gpu/drm/i915/i915_drv.h | 7 ++ drivers/gpu/drm/i915/intel_display.c | 122 ++++++++++++++++++++++++++++++++++- 2 files changed, 128 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 724d34b..1e59c02 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2041,6 +2041,13 @@ struct drm_i915_private { struct intel_encoder *dig_port_map[I915_MAX_PORTS]; /* + * Temporary copy of cursor plane state for CHV PIPE_C + * Will be initialized only when crtc_x < 0 as there is a + * HW bug causing pipe underrun + */ + struct intel_plane_state *cursor_state; + + /* * NOTE: This is the dri1/ums dungeon, don't add stuff here. Your patch * will be rejected. Instead look for a better place. */ diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index c3b5dc8..c4988d5 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -14456,6 +14456,123 @@ intel_update_cursor_plane(struct drm_plane *plane, intel_crtc_update_cursor(crtc, state); } +static void +intel_update_chv_pipe_c_cursor_plane(struct drm_plane *plane, + const struct intel_crtc_state *crtc_state, + const struct intel_plane_state *state) +{ + struct drm_crtc *crtc = crtc_state->base.crtc; + struct intel_crtc *intel_crtc = to_intel_crtc(crtc); + struct drm_device *dev = plane->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + struct drm_i915_gem_object *obj = intel_fb_obj(state->base.fb); + struct drm_i915_gem_object *cur_obj = NULL, *use_obj = NULL; + uint32_t addr; + struct intel_plane_state *cursor_state = dev_priv->cursor_state; + const struct intel_plane_state *use_state; + char __iomem *src, *dst; + + if (state->visible && state->base.crtc_x < 0) { + int bytes_per_pixel = state->base.fb->bits_per_pixel / 8; + int x = state->base.crtc_x; + int width = state->base.crtc_w; + int height = state->base.crtc_h; + struct drm_mode_fb_cmd2 mode_cmd = { 0 }; + int i; + + if (!cursor_state) { + cursor_state = kzalloc(sizeof(*cursor_state), GFP_KERNEL); + if (!cursor_state) { + use_state = state; + use_obj = obj; + goto update; + } + + memcpy(cursor_state, state, sizeof(*state)); + cursor_state->base.crtc_x = 0; + + /* Allocate new gem object */ + cur_obj = i915_gem_object_create(dev, obj->base.size); + if (IS_ERR(cur_obj)) { + kfree(cursor_state); + use_state = state; + use_obj = obj; + goto update; + } + + mode_cmd.width = cursor_state->base.fb->width; + mode_cmd.height = cursor_state->base.fb->height; + mode_cmd.pitches[0] = cursor_state->base.fb->pitches[0]; + mode_cmd.pixel_format = cursor_state->base.fb->pixel_format; + + cursor_state->base.fb = intel_framebuffer_create(dev, &mode_cmd, cur_obj); + if (IS_ERR(cursor_state->base.fb)) { + drm_gem_object_unreference_unlocked(&cur_obj->base); + kfree(cursor_state); + use_state = state; + use_obj = obj; + goto update; + } + + dev_priv->cursor_state = cursor_state; + } else + cur_obj = intel_fb_obj(cursor_state->base.fb); + + src = ioremap_wc(dev_priv->ggtt.mappable_base + + i915_gem_obj_ggtt_offset(obj), + obj->base.size); + + dst = ioremap_wc(dev_priv->ggtt.mappable_base + + i915_gem_obj_ggtt_offset(cur_obj), + cur_obj->base.size); + + /* shift the original cusrsor in to copy buffer offsetting -ive pos */ + x = -x; + for (i = 0; i < height; i++) { + src += x * bytes_per_pixel; + memcpy(dst, src, (width - x) * bytes_per_pixel); + dst += (width - x) * bytes_per_pixel; + memset(dst, 0, x * bytes_per_pixel); + dst += x * bytes_per_pixel; + src += (width -x) * bytes_per_pixel; + } + + iounmap(src); + iounmap(dst); + + use_obj = cur_obj; + use_state = cursor_state; + } else { + /* free the cursor_state if cached */ + if (cursor_state) { + struct intel_framebuffer *intel_fb = to_intel_framebuffer(cursor_state->base.fb); + drm_framebuffer_cleanup(cursor_state->base.fb); + mutex_lock(&dev->struct_mutex); + drm_gem_object_unreference(&intel_fb->obj->base); + mutex_unlock(&dev->struct_mutex); + kfree(intel_fb); + + kfree(cursor_state); + cursor_state = NULL; + } + + use_obj = obj; + use_state = state; + } + +update: + if (!use_obj) + addr = 0; + else if (!INTEL_INFO(dev)->cursor_needs_physical) + addr = i915_gem_obj_ggtt_offset(use_obj); + else + addr = use_obj->phys_handle->busaddr; + + intel_crtc->cursor_addr = addr; + + intel_crtc_update_cursor(crtc, use_state); +} + static struct drm_plane *intel_cursor_plane_create(struct drm_device *dev, int pipe) { @@ -14478,7 +14595,10 @@ static struct drm_plane *intel_cursor_plane_create(struct drm_device *dev, cursor->plane = pipe; cursor->frontbuffer_bit = INTEL_FRONTBUFFER_CURSOR(pipe); cursor->check_plane = intel_check_cursor_plane; - cursor->update_plane = intel_update_cursor_plane; + if (IS_CHERRYVIEW(dev) && pipe == PIPE_C) + cursor->update_plane = intel_update_chv_pipe_c_cursor_plane; + else + cursor->update_plane = intel_update_cursor_plane; cursor->disable_plane = intel_disable_cursor_plane; ret = drm_universal_plane_init(dev, &cursor->base, 0,