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/*
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 * Copyright (C) 2015 Etnaviv Project
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 *
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 * This program is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 as published by
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 * the Free Software Foundation.
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 *
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 * This program is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
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 * more details.
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 *
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 * You should have received a copy of the GNU General Public License along with
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 * this program.  If not, see <http://www.gnu.org/licenses/>.
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 */
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#include <etnaviv_xml/common.xml.h>
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#include "etnaviv_cmdbuf.h"
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#include "etnaviv_drv.h"
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#include "etnaviv_gem.h"
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#include "etnaviv_gpu.h"
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#include "etnaviv_iommu.h"
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#include "etnaviv_mmu.h"
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int etnaviv_iommu_init(struct etnaviv_gpu *gpu) {
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	struct etnaviv_iommu *mmu = &gpu->mmu;
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	memset(mmu, 0, sizeof(*mmu));
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	if (!(gpu->identity.minor_features1 & chipMinorFeatures1_MMU_VERSION)) {
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		etnaviv_iommuv1_domain_init(gpu);
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		mmu->version = ETNAVIV_IOMMU_V1;
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	} else {
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		etnaviv_iommuv2_domain_init(gpu);
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		mmu->version = ETNAVIV_IOMMU_V2;
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	}
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	return 0;
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}
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void etnaviv_iommu_restore(struct etnaviv_gpu *gpu) {
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	if (gpu->mmu.version == ETNAVIV_IOMMU_V1) {
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		etnaviv_iommuv1_restore(gpu);
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	} else {
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		etnaviv_iommuv2_restore(gpu);
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	}
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}
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extern struct etnaviv_iommu_ops etnaviv_iommu_ops;
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int etnaviv_iommu_get_suballoc_va(struct etnaviv_gpu *gpu, dma_addr_t paddr,
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				size_t size,
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				  uint32_t *iova) {
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	struct etnaviv_iommu *mmu = &gpu->mmu;
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	if (mmu->version == ETNAVIV_IOMMU_V1) {
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		*iova = paddr - gpu->memory_base;
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		return 0;
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	} else {
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		int ret;
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		ret = etnaviv_iommu_ops.ops.map((void*)mmu->domain, mmu->last_iova, paddr, size, IOMMU_READ);
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		if (ret < 0) {
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			return ret;
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		}
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		*iova = mmu->last_iova;
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		mmu->last_iova = mmu->last_iova + size;
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		mmu->need_flush = true;
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		return 0;
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	}
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}
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