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Wed, 5 Jun 2024 12:18:45 GMT Received: from hu-bibekkum-hyd.qualcomm.com (10.80.80.8) by nalasex01c.na.qualcomm.com (10.47.97.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Wed, 5 Jun 2024 05:18:40 -0700 From: Bibek Kumar Patro To: , , , , , , , , , , CC: , , , , "Bibek Kumar Patro" Subject: [PATCH v11 6/6] iommu/arm-smmu: add support for PRR bit setup Date: Wed, 5 Jun 2024 17:47:13 +0530 Message-ID: <20240605121713.3596499-7-quic_bibekkum@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240605121713.3596499-1-quic_bibekkum@quicinc.com> References: <20240605121713.3596499-1-quic_bibekkum@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01c.na.qualcomm.com (10.47.97.35) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: H9kiI3ojLHVoDumKSBegJeNiijsiCnmE X-Proofpoint-ORIG-GUID: H9kiI3ojLHVoDumKSBegJeNiijsiCnmE X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-06-05_02,2024-06-05_02,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 suspectscore=0 phishscore=0 impostorscore=0 malwarescore=0 bulkscore=0 clxscore=1015 spamscore=0 mlxlogscore=999 adultscore=0 lowpriorityscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2405170001 definitions=main-2406050093 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240605_051856_712430_05108362 X-CRM114-Status: GOOD ( 18.70 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add an adreno-smmu-priv interface for drm/msm to call into arm-smmu-qcom and initiate the PRR bit setup or reset sequence as per request. This will be used by GPU side to setup the PRR bit and related configuration registers through adreno-smmu private interface instead of directly poking the smmu hardware. Signed-off-by: Bibek Kumar Patro --- drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 21 +++++++++++++++++++++ drivers/iommu/arm/arm-smmu/arm-smmu.h | 2 ++ include/linux/adreno-smmu-priv.h | 5 ++++- 3 files changed, 27 insertions(+), 1 deletion(-) -- 2.34.1 diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c index 8dabc26fa10e..2f4ee22f740a 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c @@ -28,6 +28,7 @@ #define PREFETCH_SHALLOW (1 << PREFETCH_SHIFT) #define PREFETCH_MODERATE (2 << PREFETCH_SHIFT) #define PREFETCH_DEEP (3 << PREFETCH_SHIFT) +#define GFX_ACTLR_PRR (1 << 5) static const struct actlr_config sc7280_apps_actlr_cfg[] = { { 0x0800, 0x24e1, PREFETCH_DEFAULT | CMTLB }, @@ -212,6 +213,25 @@ static void qcom_adreno_smmu_resume_translation(const void *cookie, bool termina arm_smmu_cb_write(smmu, cfg->cbndx, ARM_SMMU_CB_RESUME, reg); } +static void qcom_adreno_smmu_set_actlr_bit(const void *cookie, phys_addr_t page_addr, bool set) +{ + struct arm_smmu_domain *smmu_domain = (void *)cookie; + struct arm_smmu_cfg *cfg = &smmu_domain->cfg; + struct arm_smmu_device *smmu = smmu_domain->smmu; + u32 reg = 0; + + writel_relaxed(lower_32_bits(page_addr), + (void *)smmu->ioaddr + ARM_SMMU_GFX_PRR_CFG_LADDR); + + writel_relaxed(upper_32_bits(page_addr), + (void *)smmu->ioaddr + ARM_SMMU_GFX_PRR_CFG_UADDR); + + reg = arm_smmu_cb_read(smmu, cfg->cbndx, ARM_SMMU_CB_ACTLR); + reg |= FIELD_PREP(GFX_ACTLR_PRR, set ? 1 : 0); + arm_smmu_cb_write(smmu, cfg->cbndx, ARM_SMMU_CB_ACTLR, reg); + +} + #define QCOM_ADRENO_SMMU_GPU_SID 0 static bool qcom_adreno_smmu_is_gpu_device(struct device *dev) @@ -384,6 +404,7 @@ static int qcom_adreno_smmu_init_context(struct arm_smmu_domain *smmu_domain, priv->get_fault_info = qcom_adreno_smmu_get_fault_info; priv->set_stall = qcom_adreno_smmu_set_stall; priv->resume_translation = qcom_adreno_smmu_resume_translation; + priv->set_actlr_bit = qcom_adreno_smmu_set_actlr_bit; actlrvar = qsmmu->data->actlrvar; if (!actlrvar) diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.h b/drivers/iommu/arm/arm-smmu/arm-smmu.h index d9c2ef8c1653..3076bef49e20 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu.h +++ b/drivers/iommu/arm/arm-smmu/arm-smmu.h @@ -154,6 +154,8 @@ enum arm_smmu_cbar_type { #define ARM_SMMU_SCTLR_M BIT(0) #define ARM_SMMU_CB_ACTLR 0x4 +#define ARM_SMMU_GFX_PRR_CFG_LADDR 0x6008 +#define ARM_SMMU_GFX_PRR_CFG_UADDR 0x600C #define ARM_SMMU_CB_RESUME 0x8 #define ARM_SMMU_RESUME_TERMINATE BIT(0) diff --git a/include/linux/adreno-smmu-priv.h b/include/linux/adreno-smmu-priv.h index c637e0997f6d..448e191eeb52 100644 --- a/include/linux/adreno-smmu-priv.h +++ b/include/linux/adreno-smmu-priv.h @@ -49,7 +49,9 @@ struct adreno_smmu_fault_info { * before set_ttbr0_cfg(). If stalling on fault is enabled, * the GPU driver must call resume_translation() * @resume_translation: Resume translation after a fault - * + * @set_actlr_bits: Extendible interface to be used by GPU to modify the + * ACTLR bits, currently used to intitate PRR bit setup or + * reset sequence for ACTLR registers as requested. * * The GPU driver (drm/msm) and adreno-smmu work together for controlling * the GPU's SMMU instance. This is by necessity, as the GPU is directly @@ -67,6 +69,7 @@ struct adreno_smmu_priv { void (*get_fault_info)(const void *cookie, struct adreno_smmu_fault_info *info); void (*set_stall)(const void *cookie, bool enabled); void (*resume_translation)(const void *cookie, bool terminate); + void (*set_actlr_bit)(const void *cookie, phys_addr_t page_addr, bool set); }; #endif /* __ADRENO_SMMU_PRIV_H */