1 // SPDX-License-Identifier: GPL-2.0-only
2 // Copyright (C) 2019-2020 NVIDIA CORPORATION.  All rights reserved.
10 #include "arm-smmu.h"
13  * Tegra194 has three ARM MMU-500 Instances.
16  * non-isochronous HW devices.
20  * The third instance usage is through standard arm-smmu driver itself and
36 	return nvidia_smmu->bases[inst] + (page << smmu->pgshift);  in nvidia_smmu_page()
89 		for (spin_cnt = TLB_SPIN_COUNT; spin_cnt > 0; spin_cnt--) {  in nvidia_smmu_tlb_sync()
109 	dev_err_ratelimited(smmu->dev,  in nvidia_smmu_tlb_sync()
110 			    "TLB sync timed out -- SMMU may be deadlocked\n");  in nvidia_smmu_tlb_sync()
145 	dev_err_ratelimited(smmu->dev,  in nvidia_smmu_global_fault_inst()
147 	dev_err_ratelimited(smmu->dev,  in nvidia_smmu_global_fault_inst()
179 	void __iomem *cb_base = nvidia_smmu_page(smmu, inst, smmu->numpage + idx);  in nvidia_smmu_context_fault_bank()
189 	dev_err_ratelimited(smmu->dev,  in nvidia_smmu_context_fault_bank()
207 	smmu = smmu_domain->smmu;  in nvidia_smmu_context_fault()
216 		for (idx = 0; idx < smmu->num_context_banks; idx++) {  in nvidia_smmu_context_fault()
241 	struct device *dev = smmu->dev;  in nvidia_smmu_impl_init()
247 		return ERR_PTR(-ENOMEM);  in nvidia_smmu_impl_init()
251 	 * arm-smmu.c. The smmu from struct nvidia_smmu replaces the smmu  in nvidia_smmu_impl_init()
252 	 * pointer used in arm-smmu.c once this function returns.  in nvidia_smmu_impl_init()
256 	nvidia_smmu->smmu = *smmu;  in nvidia_smmu_impl_init()
257 	/* Instance 0 is ioremapped by arm-smmu.c. */  in nvidia_smmu_impl_init()
258 	nvidia_smmu->bases[0] = smmu->base;  in nvidia_smmu_impl_init()
262 		return ERR_PTR(-ENODEV);  in nvidia_smmu_impl_init()
264 	nvidia_smmu->bases[1] = devm_ioremap_resource(dev, res);  in nvidia_smmu_impl_init()
265 	if (IS_ERR(nvidia_smmu->bases[1]))  in nvidia_smmu_impl_init()
266 		return ERR_CAST(nvidia_smmu->bases[1]);  in nvidia_smmu_impl_init()
268 	nvidia_smmu->smmu.impl = &nvidia_smmu_impl;  in nvidia_smmu_impl_init()
271 	 * Free the struct arm_smmu_device *smmu allocated in arm-smmu.c.  in nvidia_smmu_impl_init()
272 	 * Once this function returns, arm-smmu.c would use arm_smmu_device  in nvidia_smmu_impl_init()
277 	return &nvidia_smmu->smmu;  in nvidia_smmu_impl_init()