Differential D24618 Diff 75375 sys/arm64/iommu/smmu_var.h

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sys/arm64/iommu/smmu_var.h

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				/*-
				* SPDX-License-Identifier: BSD-2-Clause
				*
				* Copyright (c) 2019-2020 Ruslan Bukin <br@bsdpad.com>
				*
				* This software was developed by SRI International and the University of
				* Cambridge Computer Laboratory (Department of Computer Science and
				* Technology) under DARPA contract HR0011-18-C-0016 ("ECATS"), as part of the
				* DARPA SSITH research programme.
				*
				* Redistribution and use in source and binary forms, with or without
				* modification, are permitted provided that the following conditions
				* are met:
				* 1. Redistributions of source code must retain the above copyright
				* notice, this list of conditions and the following disclaimer.
				* 2. Redistributions in binary form must reproduce the above copyright
				* notice, this list of conditions and the following disclaimer in the
				* documentation and/or other materials provided with the distribution.
				*
				* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
				* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
				* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
				* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
				* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
				* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
				* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
				* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
				* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
				* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
				* SUCH DAMAGE.
				*
				* $FreeBSD$
				*/

				#ifndef _DEV_IOMMU_SMMU_VAR_H_
				#define _DEV_IOMMU_SMMU_VAR_H_

				#define SMMU_DEVSTR "ARM System Memory Management Unit"
				#define SMMU_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx)
				#define SMMU_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx)

				DECLARE_CLASS(smmu_driver);

				struct smmu_queue_local_copy {
				union {
				uint64_t val;
				struct {
				uint32_t prod;
				uint32_t cons;
				};
				};
				};

				struct smmu_cd {
				vm_paddr_t paddr;
				vm_size_t size;
				void *vaddr;
				};

				struct smmu_queue {
				struct smmu_queue_local_copy lc;
				vm_paddr_t paddr;
				void *vaddr;
				uint32_t prod_off;
				uint32_t cons_off;
				int size_log2;
				uint64_t base;
				};

				struct smmu_cmdq_entry {
				uint8_t opcode;
				union {
				struct {
				uint16_t asid;
				uint16_t vmid;
				vm_offset_t addr;
				bool leaf;
				} tlbi;
				struct {
				uint32_t sid;
				uint32_t ssid;
				bool leaf;
				} cfgi;
				struct {
				uint32_t sid;
				} prefetch;
				struct {
				uint64_t msiaddr;
				} sync;
				};
				};

				struct l1_desc {
				uint8_t span;
				size_t size;
				void *va;
				vm_paddr_t pa;
				};

				struct smmu_strtab {
				void *vaddr;
				uint64_t base;
				uint32_t base_cfg;
				uint32_t num_l1_entries;
				struct l1_desc *l1;
				};

				struct smmu_softc {
				device_t dev;
				struct resource *res[4];
				void *intr_cookie[3];
				uint32_t ias; /* Intermediate Physical Address */
				uint32_t oas; /* Physical Address */
				uint32_t asid_bits;
				uint32_t vmid_bits;
				uint32_t sid_bits;
				uint32_t ssid_bits;
				uint32_t pgsizes;
				uint32_t features;
				#define SMMU_FEATURE_2_LVL_STREAM_TABLE (1 << 0)
				#define SMMU_FEATURE_2_LVL_CD (1 << 1)
				#define SMMU_FEATURE_TT_LE (1 << 2)
				#define SMMU_FEATURE_TT_BE (1 << 3)
				#define SMMU_FEATURE_SEV (1 << 4)
				#define SMMU_FEATURE_MSI (1 << 5)
				#define SMMU_FEATURE_HYP (1 << 6)
				#define SMMU_FEATURE_ATS (1 << 7)
				#define SMMU_FEATURE_PRI (1 << 8)
				#define SMMU_FEATURE_STALL_FORCE (1 << 9)
				#define SMMU_FEATURE_STALL (1 << 10)
				#define SMMU_FEATURE_S1P (1 << 11)
				#define SMMU_FEATURE_S2P (1 << 12)
				#define SMMU_FEATURE_VAX (1 << 13)
				#define SMMU_FEATURE_COHERENCY (1 << 14)
				#define SMMU_FEATURE_RANGE_INV (1 << 15)
				struct smmu_queue cmdq;
				struct smmu_queue evtq;
				struct smmu_queue priq;
				struct smmu_strtab strtab;
				int sync;
				struct mtx sc_mtx;

				bitstr_t *asid_set;
				int asid_set_size;
				struct mtx asid_set_mutex;
				struct smmu_unit unit;
				};

				MALLOC_DECLARE(M_SMMU);

				/* Device methods */
				int smmu_attach(device_t dev);
				int smmu_detach(device_t dev);

				#endif /* _DEV_IOMMU_SMMU_VAR_H_ */