From patchwork Tue Aug 21 08:38:56 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Kumar, Mahesh" X-Patchwork-Id: 10571235 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BAD9713B6 for ; Tue, 21 Aug 2018 08:37:19 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A77C529E9F for ; Tue, 21 Aug 2018 08:37:19 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9B97D29EA4; Tue, 21 Aug 2018 08:37:19 +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=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 7F6A329E9F for ; Tue, 21 Aug 2018 08:37:18 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 4B1CD6E287; Tue, 21 Aug 2018 08:37:10 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1EA776E17E; Tue, 21 Aug 2018 08:37:08 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 21 Aug 2018 01:37:05 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.53,269,1531810800"; d="scan'208";a="66628512" Received: from unknown (HELO localhost.localdomain) ([10.223.25.241]) by orsmga007.jf.intel.com with ESMTP; 21 Aug 2018 01:36:41 -0700 From: Mahesh Kumar To: intel-gfx@lists.freedesktop.org Date: Tue, 21 Aug 2018 14:08:56 +0530 Message-Id: <20180821083858.26275-3-mahesh1.kumar@intel.com> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180821083858.26275-1-mahesh1.kumar@intel.com> References: <20180821083858.26275-1-mahesh1.kumar@intel.com> Subject: [Intel-gfx] [PATCH V5 2/4] drm/crc: Cleanup crtc_crc_open function X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: daniel.vetter@intel.com, Laurent Pinchart , dri-devel@lists.freedesktop.org, Haneen Mohammed MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP This patch make changes to allocate crc-entries buffer before enabling CRC generation. It moves all the failure check early in the function before setting the source or memory allocation. Now set_crc_source takes only two variable inputs, values_cnt we already gets as part of verify_crc_source. Changes since V1: - refactor code to use single spin lock Changes since V2: - rebase Changes since V3: - rebase on top of VKMS driver Signed-off-by: Mahesh Kumar Cc: dri-devel@lists.freedesktop.org Cc: Laurent Pinchart Cc: Haneen Mohammed Reviewed-by: Maarten Lankhorst (V2) Acked-by: Leo Li (V2) Reviewed-by: Laurent Pinchart (V3) --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 3 +- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c | 4 +- drivers/gpu/drm/drm_debugfs_crc.c | 61 ++++++++++------------ drivers/gpu/drm/i915/intel_drv.h | 3 +- drivers/gpu/drm/i915/intel_pipe_crc.c | 4 +- drivers/gpu/drm/rcar-du/rcar_du_crtc.c | 4 +- drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 6 +-- drivers/gpu/drm/vkms/vkms_crc.c | 5 +- drivers/gpu/drm/vkms/vkms_drv.h | 3 +- include/drm/drm_crtc.h | 3 +- 10 files changed, 39 insertions(+), 57 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h index e43ed064dc46..54056d180003 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h @@ -258,8 +258,7 @@ amdgpu_dm_remove_sink_from_freesync_module(struct drm_connector *connector); /* amdgpu_dm_crc.c */ #ifdef CONFIG_DEBUG_FS -int amdgpu_dm_crtc_set_crc_source(struct drm_crtc *crtc, const char *src_name, - size_t *values_cnt); +int amdgpu_dm_crtc_set_crc_source(struct drm_crtc *crtc, const char *src_name); int amdgpu_dm_crtc_verify_crc_source(struct drm_crtc *crtc, const char *src_name, size_t *values_cnt); diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c index 16b679faadbd..01fc5717b657 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c @@ -62,8 +62,7 @@ amdgpu_dm_crtc_verify_crc_source(struct drm_crtc *crtc, const char *src_name, return 0; } -int amdgpu_dm_crtc_set_crc_source(struct drm_crtc *crtc, const char *src_name, - size_t *values_cnt) +int amdgpu_dm_crtc_set_crc_source(struct drm_crtc *crtc, const char *src_name) { struct dm_crtc_state *crtc_state = to_dm_crtc_state(crtc->state); struct dc_stream_state *stream_state = crtc_state->stream; @@ -99,7 +98,6 @@ int amdgpu_dm_crtc_set_crc_source(struct drm_crtc *crtc, const char *src_name, return -EINVAL; } - *values_cnt = 3; /* Reset crc_skipped on dm state */ crtc_state->crc_skip_count = 0; return 0; diff --git a/drivers/gpu/drm/drm_debugfs_crc.c b/drivers/gpu/drm/drm_debugfs_crc.c index d7e626331eca..3e0a2cfaa35c 100644 --- a/drivers/gpu/drm/drm_debugfs_crc.c +++ b/drivers/gpu/drm/drm_debugfs_crc.c @@ -127,11 +127,9 @@ static ssize_t crc_control_write(struct file *file, const char __user *ubuf, if (source[len] == '\n') source[len] = '\0'; - if (crtc->funcs->verify_crc_source) { - ret = crtc->funcs->verify_crc_source(crtc, source, &values_cnt); - if (ret) - return ret; - } + ret = crtc->funcs->verify_crc_source(crtc, source, &values_cnt); + if (ret) + return ret; spin_lock_irq(&crc->lock); @@ -197,40 +195,40 @@ static int crtc_crc_open(struct inode *inode, struct file *filep) return ret; } + ret = crtc->funcs->verify_crc_source(crtc, crc->source, &values_cnt); + if (ret) + return ret; + + if (WARN_ON(values_cnt > DRM_MAX_CRC_NR)) + return -EINVAL; + + if (WARN_ON(values_cnt == 0)) + return -EINVAL; + + entries = kcalloc(DRM_CRC_ENTRIES_NR, sizeof(*entries), GFP_KERNEL); + if (!entries) + return -ENOMEM; + spin_lock_irq(&crc->lock); - if (!crc->opened) + if (!crc->opened) { crc->opened = true; - else + crc->entries = entries; + crc->values_cnt = values_cnt; + } else { ret = -EBUSY; + } spin_unlock_irq(&crc->lock); - if (ret) + if (ret) { + kfree(entries); return ret; + } - ret = crtc->funcs->set_crc_source(crtc, crc->source, &values_cnt); + ret = crtc->funcs->set_crc_source(crtc, crc->source); if (ret) goto err; - if (WARN_ON(values_cnt > DRM_MAX_CRC_NR)) { - ret = -EINVAL; - goto err_disable; - } - - if (WARN_ON(values_cnt == 0)) { - ret = -EINVAL; - goto err_disable; - } - - entries = kcalloc(DRM_CRC_ENTRIES_NR, sizeof(*entries), GFP_KERNEL); - if (!entries) { - ret = -ENOMEM; - goto err_disable; - } - spin_lock_irq(&crc->lock); - crc->entries = entries; - crc->values_cnt = values_cnt; - /* * Only return once we got a first frame, so userspace doesn't have to * guess when this particular piece of HW will be ready to start @@ -247,7 +245,7 @@ static int crtc_crc_open(struct inode *inode, struct file *filep) return 0; err_disable: - crtc->funcs->set_crc_source(crtc, NULL, &values_cnt); + crtc->funcs->set_crc_source(crtc, NULL); err: spin_lock_irq(&crc->lock); crtc_crc_cleanup(crc); @@ -259,9 +257,8 @@ static int crtc_crc_release(struct inode *inode, struct file *filep) { struct drm_crtc *crtc = filep->f_inode->i_private; struct drm_crtc_crc *crc = &crtc->crc; - size_t values_cnt; - crtc->funcs->set_crc_source(crtc, NULL, &values_cnt); + crtc->funcs->set_crc_source(crtc, NULL); spin_lock_irq(&crc->lock); crtc_crc_cleanup(crc); @@ -367,7 +364,7 @@ int drm_debugfs_crtc_crc_add(struct drm_crtc *crtc) { struct dentry *crc_ent, *ent; - if (!crtc->funcs->set_crc_source) + if (!crtc->funcs->set_crc_source || !crtc->funcs->verify_crc_source) return 0; crc_ent = debugfs_create_dir("crc", crtc->debugfs_entry); diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 529e72bcc5ef..50a51e73cc91 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -2187,8 +2187,7 @@ void lspcon_wait_pcon_mode(struct intel_lspcon *lspcon); /* intel_pipe_crc.c */ #ifdef CONFIG_DEBUG_FS -int intel_crtc_set_crc_source(struct drm_crtc *crtc, const char *source_name, - size_t *values_cnt); +int intel_crtc_set_crc_source(struct drm_crtc *crtc, const char *source_name); int intel_crtc_verify_crc_source(struct drm_crtc *crtc, const char *source_name, size_t *values_cnt); const char *const *intel_crtc_get_crc_sources(struct drm_crtc *crtc, diff --git a/drivers/gpu/drm/i915/intel_pipe_crc.c b/drivers/gpu/drm/i915/intel_pipe_crc.c index 83f9ade0cd81..f3c9010e332a 100644 --- a/drivers/gpu/drm/i915/intel_pipe_crc.c +++ b/drivers/gpu/drm/i915/intel_pipe_crc.c @@ -583,8 +583,7 @@ int intel_crtc_verify_crc_source(struct drm_crtc *crtc, const char *source_name, return -EINVAL; } -int intel_crtc_set_crc_source(struct drm_crtc *crtc, const char *source_name, - size_t *values_cnt) +int intel_crtc_set_crc_source(struct drm_crtc *crtc, const char *source_name) { struct drm_i915_private *dev_priv = to_i915(crtc->dev); struct intel_pipe_crc *pipe_crc = &dev_priv->pipe_crc[crtc->index]; @@ -623,7 +622,6 @@ int intel_crtc_set_crc_source(struct drm_crtc *crtc, const char *source_name, } pipe_crc->skipped = 0; - *values_cnt = 5; out: intel_display_power_put(dev_priv, power_domain); diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c index 57db868da4fe..8a9e5e6f16b4 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c @@ -887,8 +887,7 @@ const char *const *rcar_du_crtc_get_crc_sources(struct drm_crtc *crtc, } static int rcar_du_crtc_set_crc_source(struct drm_crtc *crtc, - const char *source_name, - size_t *values_cnt) + const char *source_name) { struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc); struct drm_modeset_acquire_ctx ctx; @@ -903,7 +902,6 @@ static int rcar_du_crtc_set_crc_source(struct drm_crtc *crtc, return ret; index = ret; - *values_cnt = 1; /* Perform an atomic commit to set the CRC source. */ drm_modeset_acquire_init(&ctx, 0); diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c index c9a5ea38e86b..38f8cae7ef51 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c @@ -1111,7 +1111,7 @@ static struct drm_connector *vop_get_edp_connector(struct vop *vop) } static int vop_crtc_set_crc_source(struct drm_crtc *crtc, - const char *source_name, size_t *values_cnt) + const char *source_name) { struct vop *vop = to_vop(crtc); struct drm_connector *connector; @@ -1121,8 +1121,6 @@ static int vop_crtc_set_crc_source(struct drm_crtc *crtc, if (!connector) return -EINVAL; - *values_cnt = 3; - if (source_name && strcmp(source_name, "auto") == 0) ret = analogix_dp_start_crc(connector); else if (!source_name) @@ -1146,7 +1144,7 @@ vop_crtc_verify_crc_source(struct drm_crtc *crtc, const char *source_name, #else static int vop_crtc_set_crc_source(struct drm_crtc *crtc, - const char *source_name, size_t *values_cnt) + const char *source_name) { return -ENODEV; } diff --git a/drivers/gpu/drm/vkms/vkms_crc.c b/drivers/gpu/drm/vkms/vkms_crc.c index 68421d3d809a..ed47d67cecd6 100644 --- a/drivers/gpu/drm/vkms/vkms_crc.c +++ b/drivers/gpu/drm/vkms/vkms_crc.c @@ -101,8 +101,7 @@ int vkms_verify_crc_source(struct drm_crtc *crtc, const char *src_name, return 0; } -int vkms_set_crc_source(struct drm_crtc *crtc, const char *src_name, - size_t *values_cnt) +int vkms_set_crc_source(struct drm_crtc *crtc, const char *src_name) { struct vkms_output *out = drm_crtc_to_vkms_output(crtc); bool enabled = false; @@ -111,8 +110,6 @@ int vkms_set_crc_source(struct drm_crtc *crtc, const char *src_name, ret = vkms_crc_parse_source(src_name, &enabled); - *values_cnt = 1; - /* make sure nothing is scheduled on crtc workq */ flush_workqueue(out->crc_workq); diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h index 090c5e4f5544..2017a2ccc43d 100644 --- a/drivers/gpu/drm/vkms/vkms_drv.h +++ b/drivers/gpu/drm/vkms/vkms_drv.h @@ -123,8 +123,7 @@ int vkms_gem_vmap(struct drm_gem_object *obj); void vkms_gem_vunmap(struct drm_gem_object *obj); /* CRC Support */ -int vkms_set_crc_source(struct drm_crtc *crtc, const char *src_name, - size_t *values_cnt); +int vkms_set_crc_source(struct drm_crtc *crtc, const char *src_name); int vkms_verify_crc_source(struct drm_crtc *crtc, const char *source_name, size_t *values_cnt); void vkms_crc_work_handle(struct work_struct *work); diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index f2dd180a867a..b21437bc95bf 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -744,8 +744,7 @@ struct drm_crtc_funcs { * * 0 on success or a negative error code on failure. */ - int (*set_crc_source)(struct drm_crtc *crtc, const char *source, - size_t *values_cnt); + int (*set_crc_source)(struct drm_crtc *crtc, const char *source); /** * @verify_crc_source: *