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Fri, 26 Jun 2020 20:04:35 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id ADDFAC4344E; Fri, 26 Jun 2020 20:04:33 +0000 (UTC) Received: from jordan-laptop.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: jcrouse) by smtp.codeaurora.org (Postfix) with ESMTPSA id 96B86C433C6; Fri, 26 Jun 2020 20:04:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 96B86C433C6 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=jcrouse@codeaurora.org From: Jordan Crouse To: linux-arm-msm@vger.kernel.org Subject: [PATCH v2 6/6] drm/msm/a6xx: Add support for per-instance pagetables Date: Fri, 26 Jun 2020 14:04:14 -0600 Message-Id: <20200626200414.14382-7-jcrouse@codeaurora.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200626200414.14382-1-jcrouse@codeaurora.org> References: <20200626200414.14382-1-jcrouse@codeaurora.org> Cc: Jonathan Marek , David Airlie , Sean Paul , Sharat Masetty , Akhil P Oommen , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Eric Anholt , iommu@lists.linux-foundation.org, John Stultz , Daniel Vetter , freedreno@lists.freedesktop.org, Emil Velikov X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" Add support for using per-instance pagetables if all the dependencies are available. Signed-off-by: Jordan Crouse --- drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 43 +++++++++++++++++++++++++++ drivers/gpu/drm/msm/msm_ringbuffer.h | 1 + 2 files changed, 44 insertions(+) diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c index aa53f47b7e8b..95ed2ceac121 100644 --- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c +++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c @@ -79,6 +79,34 @@ static void get_stats_counter(struct msm_ringbuffer *ring, u32 counter, OUT_RING(ring, upper_32_bits(iova)); } +static void a6xx_set_pagetable(struct msm_gpu *gpu, struct msm_ringbuffer *ring, + struct msm_file_private *ctx) +{ + phys_addr_t ttbr; + u32 asid; + + if (msm_iommu_pagetable_params(ctx->aspace->mmu, &ttbr, &asid)) + return; + + /* Execute the table update */ + OUT_PKT7(ring, CP_SMMU_TABLE_UPDATE, 4); + OUT_RING(ring, lower_32_bits(ttbr)); + OUT_RING(ring, (((u64) asid) << 48) | upper_32_bits(ttbr)); + /* CONTEXTIDR is currently unused */ + OUT_RING(ring, 0); + /* CONTEXTBANK is currently unused */ + OUT_RING(ring, 0); + + /* + * Write the new TTBR0 to the memstore. This is good for debugging. + */ + OUT_PKT7(ring, CP_MEM_WRITE, 4); + OUT_RING(ring, lower_32_bits(rbmemptr(ring, ttbr0))); + OUT_RING(ring, upper_32_bits(rbmemptr(ring, ttbr0))); + OUT_RING(ring, lower_32_bits(ttbr)); + OUT_RING(ring, (((u64) asid) << 48) | upper_32_bits(ttbr)); +} + static void a6xx_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit, struct msm_file_private *ctx) { @@ -89,6 +117,8 @@ static void a6xx_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit, struct msm_ringbuffer *ring = submit->ring; unsigned int i; + a6xx_set_pagetable(gpu, ring, ctx); + get_stats_counter(ring, REG_A6XX_RBBM_PERFCTR_CP_0_LO, rbmemptr_stats(ring, index, cpcycles_start)); @@ -872,6 +902,18 @@ static unsigned long a6xx_gpu_busy(struct msm_gpu *gpu) return (unsigned long)busy_time; } +struct msm_gem_address_space *a6xx_address_space_instance(struct msm_gpu *gpu) +{ + struct msm_mmu *mmu; + + mmu = msm_iommu_pagetable_create(gpu->aspace->mmu); + if (IS_ERR(mmu)) + return msm_gem_address_space_get(gpu->aspace); + + return msm_gem_address_space_create(mmu, + "gpu", 0x100000000ULL, 0x1ffffffffULL); +} + static const struct adreno_gpu_funcs funcs = { .base = { .get_param = adreno_get_param, @@ -895,6 +937,7 @@ static const struct adreno_gpu_funcs funcs = { .gpu_state_put = a6xx_gpu_state_put, #endif .create_address_space = adreno_iommu_create_address_space, + .address_space_instance = a6xx_address_space_instance, }, .get_timestamp = a6xx_get_timestamp, }; diff --git a/drivers/gpu/drm/msm/msm_ringbuffer.h b/drivers/gpu/drm/msm/msm_ringbuffer.h index 7764373d0ed2..0987d6bf848c 100644 --- a/drivers/gpu/drm/msm/msm_ringbuffer.h +++ b/drivers/gpu/drm/msm/msm_ringbuffer.h @@ -31,6 +31,7 @@ struct msm_rbmemptrs { volatile uint32_t fence; volatile struct msm_gpu_submit_stats stats[MSM_GPU_SUBMIT_STATS_COUNT]; + volatile u64 ttbr0; }; struct msm_ringbuffer { -- 2.17.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu