Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753277AbdI1MxD (ORCPT ); Thu, 28 Sep 2017 08:53:03 -0400 Received: from mail.kapsi.fi ([91.232.154.25]:38965 "EHLO mail.kapsi.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753020AbdI1Mv4 (ORCPT ); Thu, 28 Sep 2017 08:51:56 -0400 From: Mikko Perttunen To: thierry.reding@gmail.com, jonathanh@nvidia.com Cc: digetx@gmail.com, dri-devel@lists.freedesktop.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org, Mikko Perttunen Subject: [PATCH v3 2/6] gpu: host1x: Enable gather filter Date: Thu, 28 Sep 2017 15:50:40 +0300 Message-Id: <20170928125044.32516-3-mperttunen@nvidia.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20170928125044.32516-1-mperttunen@nvidia.com> References: <20170928125044.32516-1-mperttunen@nvidia.com> X-SA-Exim-Connect-IP: 84.249.131.249 X-SA-Exim-Mail-From: mperttunen@nvidia.com X-SA-Exim-Scanned: No (on mail.kapsi.fi); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3260 Lines: 98 The gather filter is a feature present on Tegra124 and newer where the hardware prevents GATHERed command buffers from executing commands normally reserved for the CDMA pushbuffer which is maintained by the kernel driver. This commit enables the gather filter on all supporting hardware. Signed-off-by: Mikko Perttunen Reviewed-by: Dmitry Osipenko --- drivers/gpu/host1x/hw/channel_hw.c | 22 ++++++++++++++++++++++ drivers/gpu/host1x/hw/hw_host1x04_channel.h | 12 ++++++++++++ drivers/gpu/host1x/hw/hw_host1x05_channel.h | 12 ++++++++++++ 3 files changed, 46 insertions(+) diff --git a/drivers/gpu/host1x/hw/channel_hw.c b/drivers/gpu/host1x/hw/channel_hw.c index b929d7f1e291..fb8132fc477b 100644 --- a/drivers/gpu/host1x/hw/channel_hw.c +++ b/drivers/gpu/host1x/hw/channel_hw.c @@ -181,10 +181,32 @@ static int channel_submit(struct host1x_job *job) return err; } +static void enable_gather_filter(struct host1x *host, + struct host1x_channel *ch) +{ +#if HOST1X_HW >= 6 + u32 val; + + if (!host->hv_regs) + return; + + val = host1x_hypervisor_readl( + host, HOST1X_HV_CH_KERNEL_FILTER_GBUFFER(ch->id / 32)); + val |= BIT(ch->id % 32); + host1x_hypervisor_writel( + host, val, HOST1X_HV_CH_KERNEL_FILTER_GBUFFER(ch->id / 32)); +#elif HOST1X_HW >= 4 + host1x_ch_writel(ch, + HOST1X_CHANNEL_CHANNELCTRL_KERNEL_FILTER_GBUFFER(1), + HOST1X_CHANNEL_CHANNELCTRL); +#endif +} + static int host1x_channel_init(struct host1x_channel *ch, struct host1x *dev, unsigned int index) { ch->regs = dev->regs + index * HOST1X_CHANNEL_SIZE; + enable_gather_filter(dev, ch); return 0; } diff --git a/drivers/gpu/host1x/hw/hw_host1x04_channel.h b/drivers/gpu/host1x/hw/hw_host1x04_channel.h index 95e6f96142b9..2e8b635aa660 100644 --- a/drivers/gpu/host1x/hw/hw_host1x04_channel.h +++ b/drivers/gpu/host1x/hw/hw_host1x04_channel.h @@ -117,5 +117,17 @@ static inline u32 host1x_channel_dmactrl_dmainitget(void) } #define HOST1X_CHANNEL_DMACTRL_DMAINITGET \ host1x_channel_dmactrl_dmainitget() +static inline u32 host1x_channel_channelctrl_r(void) +{ + return 0x98; +} +#define HOST1X_CHANNEL_CHANNELCTRL \ + host1x_channel_channelctrl_r() +static inline u32 host1x_channel_channelctrl_kernel_filter_gbuffer_f(u32 v) +{ + return (v & 0x1) << 2; +} +#define HOST1X_CHANNEL_CHANNELCTRL_KERNEL_FILTER_GBUFFER(v) \ + host1x_channel_channelctrl_kernel_filter_gbuffer_f(v) #endif diff --git a/drivers/gpu/host1x/hw/hw_host1x05_channel.h b/drivers/gpu/host1x/hw/hw_host1x05_channel.h index fce6e2c1ff4c..abbbc2641ce6 100644 --- a/drivers/gpu/host1x/hw/hw_host1x05_channel.h +++ b/drivers/gpu/host1x/hw/hw_host1x05_channel.h @@ -117,5 +117,17 @@ static inline u32 host1x_channel_dmactrl_dmainitget(void) } #define HOST1X_CHANNEL_DMACTRL_DMAINITGET \ host1x_channel_dmactrl_dmainitget() +static inline u32 host1x_channel_channelctrl_r(void) +{ + return 0x98; +} +#define HOST1X_CHANNEL_CHANNELCTRL \ + host1x_channel_channelctrl_r() +static inline u32 host1x_channel_channelctrl_kernel_filter_gbuffer_f(u32 v) +{ + return (v & 0x1) << 2; +} +#define HOST1X_CHANNEL_CHANNELCTRL_KERNEL_FILTER_GBUFFER(v) \ + host1x_channel_channelctrl_kernel_filter_gbuffer_f(v) #endif -- 2.14.1