iommu/fsl: Add additional iommu attributes required by the PAMU driver. (7cabf491) · Commits · 戴 / test

arch/powerpc/include/asm/fsl_pamu_stash.h

0 → 100644

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		/*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License, version 2, as
		* published by the Free Software Foundation.
		*
		* This program is distributed in the hope that it will be useful,
		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		* GNU General Public License for more details.
		*
		* You should have received a copy of the GNU General Public License
		* along with this program; if not, write to the Free Software
		* Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
		*
		* Copyright (C) 2013 Freescale Semiconductor, Inc.
		*
		*/

		#ifndef __FSL_PAMU_STASH_H
		#define __FSL_PAMU_STASH_H

		/* cache stash targets */
		enum pamu_stash_target {
		PAMU_ATTR_CACHE_L1 = 1,
		PAMU_ATTR_CACHE_L2,
		PAMU_ATTR_CACHE_L3,
		};

		/*
		* This attribute allows configuring stashig specific parameters
		* in the PAMU hardware.
		*/

		struct pamu_stash_attribute {
		u32 cpu; /* cpu number */
		u32 cache; /* cache to stash to: L1,L2,L3 */
		};

		#endif /* __FSL_PAMU_STASH_H */

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		@@ -58,10 +58,26 @@ struct iommu_domain {
		#define IOMMU_CAP_CACHE_COHERENCY 0x1
		#define IOMMU_CAP_INTR_REMAP 0x2 /* isolates device intrs */

		/*
		* Following constraints are specifc to FSL_PAMUV1:
		* -aperture must be power of 2, and naturally aligned
		* -number of windows must be power of 2, and address space size
		* of each window is determined by aperture size / # of windows
		* -the actual size of the mapped region of a window must be power
		* of 2 starting with 4KB and physical address must be naturally
		* aligned.
		* DOMAIN_ATTR_FSL_PAMUV1 corresponds to the above mentioned contraints.
		* The caller can invoke iommu_domain_get_attr to check if the underlying
		* iommu implementation supports these constraints.
		*/

		enum iommu_attr {
		DOMAIN_ATTR_GEOMETRY,
		DOMAIN_ATTR_PAGING,
		DOMAIN_ATTR_WINDOWS,
		DOMAIN_ATTR_FSL_PAMU_STASH,
		DOMAIN_ATTR_FSL_PAMU_ENABLE,
		DOMAIN_ATTR_FSL_PAMUV1,
		DOMAIN_ATTR_MAX,
		};