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That's all we know. X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" From: Eric Auger Page and block PTE decoding can share some code. Let's first handle table PTE and factorize some code shared by page and block PTEs. Signed-off-by: Eric Auger Reviewed-by: Peter Maydell Message-id: 20200728150815.11446-2-eric.auger@redhat.com Signed-off-by: Peter Maydell --- hw/arm/smmu-common.c | 48 ++++++++++++++++---------------------------- 1 file changed, 17 insertions(+), 31 deletions(-) diff --git a/hw/arm/smmu-common.c b/hw/arm/smmu-common.c index e13a5f4a7cb..a3f9e473985 100644 --- a/hw/arm/smmu-common.c +++ b/hw/arm/smmu-common.c @@ -186,7 +186,7 @@ static int smmu_ptw_64(SMMUTransCfg *cfg, uint64_t subpage_size =3D 1ULL << level_shift(level, granule_sz); uint64_t mask =3D subpage_size - 1; uint32_t offset =3D iova_level_offset(iova, inputsize, level, gran= ule_sz); - uint64_t pte; + uint64_t pte, gpa; dma_addr_t pte_addr =3D baseaddr + offset * sizeof(pte); uint8_t ap; =20 @@ -199,56 +199,42 @@ static int smmu_ptw_64(SMMUTransCfg *cfg, if (is_invalid_pte(pte) || is_reserved_pte(pte, level)) { trace_smmu_ptw_invalid_pte(stage, level, baseaddr, pte_addr, offset, pte); - info->type =3D SMMU_PTW_ERR_TRANSLATION; - goto error; + break; } =20 - if (is_page_pte(pte, level)) { - uint64_t gpa =3D get_page_pte_address(pte, granule_sz); + if (is_table_pte(pte, level)) { + ap =3D PTE_APTABLE(pte); =20 - ap =3D PTE_AP(pte); if (is_permission_fault(ap, perm)) { info->type =3D SMMU_PTW_ERR_PERMISSION; goto error; } - - tlbe->translated_addr =3D gpa + (iova & mask); - tlbe->perm =3D PTE_AP_TO_PERM(ap); + baseaddr =3D get_table_pte_address(pte, granule_sz); + level++; + continue; + } else if (is_page_pte(pte, level)) { + gpa =3D get_page_pte_address(pte, granule_sz); trace_smmu_ptw_page_pte(stage, level, iova, baseaddr, pte_addr, pte, gpa); - return 0; - } - if (is_block_pte(pte, level)) { + } else { uint64_t block_size; - hwaddr gpa =3D get_block_pte_address(pte, level, granule_sz, - &block_size); - - ap =3D PTE_AP(pte); - if (is_permission_fault(ap, perm)) { - info->type =3D SMMU_PTW_ERR_PERMISSION; - goto error; - } =20 + gpa =3D get_block_pte_address(pte, level, granule_sz, + &block_size); trace_smmu_ptw_block_pte(stage, level, baseaddr, pte_addr, pte, iova, gpa, block_size >> 20); - - tlbe->translated_addr =3D gpa + (iova & mask); - tlbe->perm =3D PTE_AP_TO_PERM(ap); - return 0; } - - /* table pte */ - ap =3D PTE_APTABLE(pte); - + ap =3D PTE_AP(pte); if (is_permission_fault(ap, perm)) { info->type =3D SMMU_PTW_ERR_PERMISSION; goto error; } - baseaddr =3D get_table_pte_address(pte, granule_sz); - level++; - } =20 + tlbe->translated_addr =3D gpa + (iova & mask); + tlbe->perm =3D PTE_AP_TO_PERM(ap); + return 0; + } info->type =3D SMMU_PTW_ERR_TRANSLATION; =20 error: --=20 2.20.1