From patchwork Fri Jun 28 17:29:15 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rodrigo Vivi X-Patchwork-Id: 2800311 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id B1036BF4A1 for ; Fri, 28 Jun 2013 17:30:11 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A866C20234 for ; Fri, 28 Jun 2013 17:30:10 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 686A020231 for ; Fri, 28 Jun 2013 17:30:09 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 66271E6717 for ; Fri, 28 Jun 2013 10:30:09 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mail-pa0-f45.google.com (mail-pa0-f45.google.com [209.85.220.45]) by gabe.freedesktop.org (Postfix) with ESMTP id C50DCE66F1 for ; Fri, 28 Jun 2013 10:29:23 -0700 (PDT) Received: by mail-pa0-f45.google.com with SMTP id bi5so2681546pad.4 for ; Fri, 28 Jun 2013 10:29:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references; bh=6LA9u7+fzL5dDvo+rATocCIlLp7UFmr20tNkaq85mPk=; b=Ua4ubrbVMuH9YFjyRx5eajC/JdCoEck6/fJPC/W7grsRHBg1pYItD/T3TncIvuZIFp 44Ua+VCWZOa9YCaLhApaP8grAqBejdY1Or0ijUtxQHGko9BOJm64Fdtnn4E1zrTUTcgf 0jhXPMVAtB4WL/PWkNsJKSUaQF9djMebpn2fR1QaIUH/JsiG1RsbCRoUCISMHGMM5Yo7 FiFV8mr0GSTuGmk+nwgr5gOlOFmDrH8RQimhDZg9tt1Zy+ma7ZOTyv3McKsW2XVJFDA2 byZIEhqiv1EPh7aDa8W1yFDHujITD9YaTiFAPZSO9ZguYAWuWbqqfc/IRxYKOU1srS+n eU3g== X-Received: by 10.66.185.14 with SMTP id ey14mr12644201pac.23.1372440563498; Fri, 28 Jun 2013 10:29:23 -0700 (PDT) Received: from localhost (jfdmzpr02-ext.jf.intel.com. [134.134.137.71]) by mx.google.com with ESMTPSA id qe10sm9082808pbb.2.2013.06.28.10.29.21 for (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Fri, 28 Jun 2013 10:29:22 -0700 (PDT) From: Rodrigo Vivi To: intel-gfx@lists.freedesktop.org Date: Fri, 28 Jun 2013 14:29:15 -0300 Message-Id: <1372440555-18751-1-git-send-email-rodrigo.vivi@gmail.com> X-Mailer: git-send-email 1.8.1.4 In-Reply-To: <1372283722-12988-5-git-send-email-rodrigo.vivi@gmail.com> References: <1372283722-12988-5-git-send-email-rodrigo.vivi@gmail.com> Cc: Paulo Zanoni Subject: [Intel-gfx] [PATCH] drm/i915: Added debugfs support for PSR Status X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: intel-gfx-bounces+patchwork-intel-gfx=patchwork.kernel.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+patchwork-intel-gfx=patchwork.kernel.org@lists.freedesktop.org X-Spam-Status: No, score=-5.4 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Adding support for PSR Status, PSR entry counter and performance counters. Heavily based on initial work from Shobhit. v2: Fix PSR Status Link bits by Paulo Zanoni. v3: Prefer seq_puts to seq_printf by Paulo Zanoni. CC: Paulo Zanoni Credits-by: Shobhit Kumar Signed-off-by: Rodrigo Vivi Reviewed-by: Paulo Zanoni --- drivers/gpu/drm/i915/i915_debugfs.c | 90 +++++++++++++++++++++++++++++++++++++ drivers/gpu/drm/i915/i915_reg.h | 24 ++++++++++ 2 files changed, 114 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index a188624..67c777f 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -1877,6 +1877,95 @@ static int i915_dpio_info(struct seq_file *m, void *data) return 0; } +static int i915_edp_psr_status(struct seq_file *m, void *data) +{ + struct drm_info_node *node = m->private; + struct drm_device *dev = node->minor->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + u32 psrctl, psrstat, psrperf; + + psrctl = I915_READ(EDP_PSR_CTL); + seq_printf(m, "PSR Enabled: %s\n", + yesno(psrctl & EDP_PSR_ENABLE)); + + psrstat = I915_READ(EDP_PSR_STATUS_CTL); + + seq_puts(m, "PSR Current State: "); + switch (psrstat & EDP_PSR_STATUS_STATE_MASK) { + case EDP_PSR_STATUS_STATE_IDLE: + seq_puts(m, "Reset state\n"); + break; + case EDP_PSR_STATUS_STATE_SRDONACK: + seq_puts(m, "Wait for TG/Stream to send on frame of data after SRD conditions are met\n"); + break; + case EDP_PSR_STATUS_STATE_SRDENT: + seq_puts(m, "SRD entry\n"); + break; + case EDP_PSR_STATUS_STATE_BUFOFF: + seq_puts(m, "Wait for buffer turn off\n"); + break; + case EDP_PSR_STATUS_STATE_BUFON: + seq_puts(m, "Wait for buffer turn on\n"); + break; + case EDP_PSR_STATUS_STATE_AUXACK: + seq_puts(m, "Wait for AUX to acknowledge on SRD exit\n"); + break; + case EDP_PSR_STATUS_STATE_SRDOFFACK: + seq_puts(m, "Wait for TG/Stream to acknowledge the SRD VDM exit\n"); + break; + default: + seq_puts(m, "Unknown\n"); + break; + } + + seq_puts(m, "Link Status: "); + switch (psrstat & EDP_PSR_STATUS_LINK_MASK) { + case EDP_PSR_STATUS_LINK_FULL_OFF: + seq_puts(m, "Link is fully off\n"); + break; + case EDP_PSR_STATUS_LINK_FULL_ON: + seq_puts(m, "Link is fully on\n"); + break; + case EDP_PSR_STATUS_LINK_STANDBY: + seq_puts(m, "Link is in standby\n"); + break; + default: + seq_puts(m, "Unknown\n"); + break; + } + + seq_printf(m, "PSR Entry Count: %u\n", + psrstat >> EDP_PSR_STATUS_COUNT_SHIFT & + EDP_PSR_STATUS_COUNT_MASK); + + seq_printf(m, "Max Sleep Timer Counter: %u\n", + psrstat >> EDP_PSR_STATUS_MAX_SLEEP_TIMER_SHIFT & + EDP_PSR_STATUS_MAX_SLEEP_TIMER_MASK); + + seq_printf(m, "Had AUX error: %s\n", + yesno(psrstat & EDP_PSR_STATUS_AUX_ERROR)); + + seq_printf(m, "Sending AUX: %s\n", + yesno(psrstat & EDP_PSR_STATUS_AUX_SENDING)); + + seq_printf(m, "Sending Idle: %s\n", + yesno(psrstat & EDP_PSR_STATUS_SENDING_IDLE)); + + seq_printf(m, "Sending TP2 TP3: %s\n", + yesno(psrstat & EDP_PSR_STATUS_SENDING_TP2_TP3)); + + seq_printf(m, "Sending TP1: %s\n", + yesno(psrstat & EDP_PSR_STATUS_SENDING_TP1)); + + seq_printf(m, "Idle Count: %u\n", + psrstat & EDP_PSR_STATUS_IDLE_MASK); + + psrperf = (I915_READ(EDP_PSR_PERF_CNT)) & EDP_PSR_PERF_CNT_MASK; + seq_printf(m, "Performance Counter: %u\n", psrperf); + + return 0; +} + static int i915_wedged_get(void *data, u64 *val) { @@ -2306,6 +2395,7 @@ static struct drm_info_list i915_debugfs_list[] = { {"i915_swizzle_info", i915_swizzle_info, 0}, {"i915_ppgtt_info", i915_ppgtt_info, 0}, {"i915_dpio", i915_dpio_info, 0}, + {"i915_edp_psr_status", i915_edp_psr_status, 0}, }; #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index caf57d8..833cc97 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -1812,6 +1812,30 @@ #define EDP_PSR_STATUS_CTL 0x64840 #define EDP_PSR_STATUS_STATE_MASK (7<<29) +#define EDP_PSR_STATUS_STATE_IDLE (0<<29) +#define EDP_PSR_STATUS_STATE_SRDONACK (1<<29) +#define EDP_PSR_STATUS_STATE_SRDENT (2<<29) +#define EDP_PSR_STATUS_STATE_BUFOFF (3<<29) +#define EDP_PSR_STATUS_STATE_BUFON (4<<29) +#define EDP_PSR_STATUS_STATE_AUXACK (5<<29) +#define EDP_PSR_STATUS_STATE_SRDOFFACK (6<<29) +#define EDP_PSR_STATUS_LINK_MASK (3<<26) +#define EDP_PSR_STATUS_LINK_FULL_OFF (0<<26) +#define EDP_PSR_STATUS_LINK_FULL_ON (1<<26) +#define EDP_PSR_STATUS_LINK_STANDBY (2<<26) +#define EDP_PSR_STATUS_MAX_SLEEP_TIMER_SHIFT 20 +#define EDP_PSR_STATUS_MAX_SLEEP_TIMER_MASK 0x1f +#define EDP_PSR_STATUS_COUNT_SHIFT 16 +#define EDP_PSR_STATUS_COUNT_MASK 0xf +#define EDP_PSR_STATUS_AUX_ERROR (1<<15) +#define EDP_PSR_STATUS_AUX_SENDING (1<<12) +#define EDP_PSR_STATUS_SENDING_IDLE (1<<9) +#define EDP_PSR_STATUS_SENDING_TP2_TP3 (1<<8) +#define EDP_PSR_STATUS_SENDING_TP1 (1<<4) +#define EDP_PSR_STATUS_IDLE_MASK 0xf + +#define EDP_PSR_PERF_CNT 0x64844 +#define EDP_PSR_PERF_CNT_MASK 0xffffff #define EDP_PSR_DEBUG_CTL 0x64860 #define EDP_PSR_DEBUG_MASK_LPSP (1<<27)