/* * Copyright (C) 2007 Advanced Micro Devices, Inc. * Author: Leo Duran <leo.duran@amd.com> * Author: Wei Wang <wei.wang2@amd.com> - adapted to xen * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * 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, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA */#ifndef _ASM_X86_64_AMD_IOMMU_DEFS_H#define _ASM_X86_64_AMD_IOMMU_DEFS_H/* Reserve some non-mapped pages to handle error conditions. * 'bad_dma_address' will point to these reserved pages, and * the mapping funtions will return 'bad_dma_address' if there * are not enough page table entries available. */#define IOMMU_RESERVED_BASE_ADDR	0#define IOMMU_RESERVED_PAGES		32/* IOMMU ComWaitInt polling after issuing a COMPLETION_WAIT command */#define COMPLETION_WAIT_DEFAULT_POLLING_COUNT	10/* IOMMU Command Buffer entries: in power of 2 increments, minimum of 256 */#define IOMMU_CMD_BUFFER_DEFAULT_ENTRIES	512/* IOMMU Event Log entries: in power of 2 increments, minimum of 256 */#define IOMMU_EVENT_LOG_DEFAULT_ENTRIES     512#define BITMAP_ENTRIES_PER_BYTE		8#define PTE_PER_TABLE_SHIFT		9#define PTE_PER_TABLE_SIZE		(1 << PTE_PER_TABLE_SHIFT)#define PTE_PER_TABLE_MASK		(~(PTE_PER_TABLE_SIZE - 1))#define PTE_PER_TABLE_ALIGN(entries) 	\	(((entries) + PTE_PER_TABLE_SIZE - 1) & PTE_PER_TABLE_MASK)#define PTE_PER_TABLE_ALLOC(entries)	\	PAGE_SIZE * (PTE_PER_TABLE_ALIGN(entries) >> PTE_PER_TABLE_SHIFT)/* 0-based aperture order (represents virtual address space for DMA mappings */#define APERTURE_ORDER_FOR_32B_APERTURE		0#define APERTURE_ORDER_FOR_64MB_APERTURE	1#define APERTURE_ORDER_FOR_128MB_APERTURE	2#define APERTURE_ORDER_FOR_256MB_APERTURE	3#define APERTURE_ORDER_FOR_512MB_APERTURE	4#define APERTURE_ORDER_FOR_1GB_APERTURE		5#define APERTURE_ORDER_FOR_MAX_APERTURE		APERTURE_ORDER_FOR_1GB_APERTURE/* The minimum 32MB aperture requires 2**13 level-1 page table entries */#define SHIFT_FOR_MIN_APERTURE		13#define PAGES_FROM_APERTURE_ORDER(order)	\	((1 << (order)) << SHIFT_FOR_MIN_APERTURE)#define ORDER_FROM_APERTURE_PAGES(pages)	\	get_order(((pages) * PAGE_SIZE) >> SHIFT_FOR_MIN_APERTURE)/* * PCI config-space */#define VALID_PCI_VENDOR_ID(id)		(((id) != 0) && ((id) != 0xFFFF))#define IS_PCI_MULTI_FUNCTION(hdr)	((hdr) & 0x80)#define IS_PCI_TYPE0_HEADER(hdr)	(((hdr) & 0x7f) == 0)#define IS_PCI_TYPE1_HEADER(hdr)	(((hdr) & 0x7f) == 1)#define PCI_MAX_BUS_COUNT	256#define PCI_MAX_DEV_COUNT	32#define PCI_MAX_FUNC_COUNT	8#define PCI_MIN_DEVFN		0#define PCI_MAX_DEVFN		0xFF/* * Capability blocks are 4-byte aligned, and must start at >= offset 0x40, * for a max of 48 possible cap_blocks (256 - 0x40 = 192; 192 / 4 = 48) * The lower 2 bits of each pointer are reserved, and must be masked off. */#define PCI_MIN_CAP_OFFSET	0x40#define PCI_MAX_CAP_BLOCKS	48#define PCI_CAP_PTR_MASK	0xFC/* IOMMU Capability */#define PCI_CAP_ID_MASK		0x000000FF#define PCI_CAP_ID_SHIFT	0#define PCI_CAP_NEXT_PTR_MASK	0x0000FF00#define PCI_CAP_NEXT_PTR_SHIFT	8#define PCI_CAP_TYPE_MASK	0x00070000#define PCI_CAP_TYPE_SHIFT	16#define PCI_CAP_REV_MASK	0x00F80000#define PCI_CAP_REV_SHIFT	19#define PCI_CAP_IOTLB_MASK	0x01000000#define PCI_CAP_IOTLB_SHIFT	24#define PCI_CAP_HT_TUNNEL_MASK	0x02000000#define PCI_CAP_HT_TUNNEL_SHIFT	25#define PCI_CAP_NP_CACHE_MASK	0x04000000#define PCI_CAP_NP_CACHE_SHIFT	26#define PCI_CAP_RESET_MASK	0x80000000#define PCI_CAP_RESET_SHIFT	31#define PCI_CAP_ID_SECURE_DEVICE	0x0F#define PCI_CAP_TYPE_IOMMU		0x3#define PCI_CAP_MMIO_BAR_LOW_OFFSET	0x04#define PCI_CAP_MMIO_BAR_HIGH_OFFSET	0x08#define PCI_CAP_MMIO_BAR_LOW_MASK	0xFFFFC000#define IOMMU_MMIO_REGION_LENGTH	0x4000#define PCI_CAP_RANGE_OFFSET		0x0C#define PCI_CAP_BUS_NUMBER_MASK		0x0000FF00#define PCI_CAP_BUS_NUMBER_SHIFT	8#define PCI_CAP_FIRST_DEVICE_MASK	0x00FF0000#define PCI_CAP_FIRST_DEVICE_SHIFT	16#define PCI_CAP_LAST_DEVICE_MASK	0xFF000000#define PCI_CAP_LAST_DEVICE_SHIFT	24#define PCI_CAP_UNIT_ID_MASK    0x0000001F#define PCI_CAP_UNIT_ID_SHIFT   0#define PCI_MISC_INFO_OFFSET    0x10#define PCI_CAP_MSI_NUMBER_MASK     0x0000001F#define PCI_CAP_MSI_NUMBER_SHIFT    0/* Device Table */#define IOMMU_DEV_TABLE_BASE_LOW_OFFSET		0x00#define IOMMU_DEV_TABLE_BASE_HIGH_OFFSET	0x04#define IOMMU_DEV_TABLE_BASE_LOW_MASK		0xFFFFF000#define IOMMU_DEV_TABLE_BASE_LOW_SHIFT		12#define IOMMU_DEV_TABLE_BASE_HIGH_MASK		0x000FFFFF#define IOMMU_DEV_TABLE_BASE_HIGH_SHIFT		0#define IOMMU_DEV_TABLE_SIZE_MASK		0x000001FF#define IOMMU_DEV_TABLE_SIZE_SHIFT		0#define IOMMU_DEV_TABLE_ENTRIES_PER_BUS		256#define IOMMU_DEV_TABLE_ENTRY_SIZE		32#define IOMMU_DEV_TABLE_U32_PER_ENTRY		(IOMMU_DEV_TABLE_ENTRY_SIZE / 4)#define IOMMU_DEV_TABLE_SYS_MGT_DMA_ABORTED	0x0#define IOMMU_DEV_TABLE_SYS_MGT_MSG_FORWARDED	0x1#define IOMMU_DEV_TABLE_SYS_MGT_INT_FORWARDED	0x2#define IOMMU_DEV_TABLE_SYS_MGT_DMA_FORWARDED	0x3#define IOMMU_DEV_TABLE_IO_CONTROL_ABORTED	0x0#define IOMMU_DEV_TABLE_IO_CONTROL_FORWARDED	0x1#define IOMMU_DEV_TABLE_IO_CONTROL_TRANSLATED	0x2#define IOMMU_DEV_TABLE_INT_CONTROL_ABORTED	0x0#define IOMMU_DEV_TABLE_INT_CONTROL_FORWARDED	0x1#define IOMMU_DEV_TABLE_INT_CONTROL_TRANSLATED	0x2/* DeviceTable Entry[31:0] */#define IOMMU_DEV_TABLE_VALID_MASK			0x00000001#define IOMMU_DEV_TABLE_VALID_SHIFT			0#define IOMMU_DEV_TABLE_TRANSLATION_VALID_MASK		0x00000002#define IOMMU_DEV_TABLE_TRANSLATION_VALID_SHIFT		1#define IOMMU_DEV_TABLE_PAGING_MODE_MASK		0x00000E00#define IOMMU_DEV_TABLE_PAGING_MODE_SHIFT		9#define IOMMU_DEV_TABLE_PAGE_TABLE_PTR_LOW_MASK		0xFFFFF000#define IOMMU_DEV_TABLE_PAGE_TABLE_PTR_LOW_SHIFT	12/* DeviceTable Entry[63:32] */#define IOMMU_DEV_TABLE_PAGE_TABLE_PTR_HIGH_MASK	0x000FFFFF#define IOMMU_DEV_TABLE_PAGE_TABLE_PTR_HIGH_SHIFT	0#define IOMMU_DEV_TABLE_IO_READ_PERMISSION_MASK		0x20000000#define IOMMU_DEV_TABLE_IO_READ_PERMISSION_SHIFT	29#define IOMMU_DEV_TABLE_IO_WRITE_PERMISSION_MASK	0x40000000#define IOMMU_DEV_TABLE_IO_WRITE_PERMISSION_SHIFT	30/* DeviceTable Entry[95:64] */#define IOMMU_DEV_TABLE_DOMAIN_ID_MASK	0x0000FFFF#define IOMMU_DEV_TABLE_DOMAIN_ID_SHIFT	0/* DeviceTable Entry[127:96] */#define IOMMU_DEV_TABLE_IOTLB_SUPPORT_MASK		0x00000001#define IOMMU_DEV_TABLE_IOTLB_SUPPORT_SHIFT		0#define IOMMU_DEV_TABLE_SUPRESS_LOGGED_PAGES_MASK	0x00000002#define IOMMU_DEV_TABLE_SUPRESS_LOGGED_PAGES_SHIFT	1#define IOMMU_DEV_TABLE_SUPRESS_ALL_PAGES_MASK		0x00000004#define IOMMU_DEV_TABLE_SUPRESS_ALL_PAGES_SHIFT		2#define IOMMU_DEV_TABLE_IO_CONTROL_MASK			0x00000018#define IOMMU_DEV_TABLE_IO_CONTROL_SHIFT		3#define IOMMU_DEV_TABLE_IOTLB_CACHE_HINT_MASK		0x00000020#define IOMMU_DEV_TABLE_IOTLB_CACHE_HINT_SHIFT		5#define IOMMU_DEV_TABLE_SNOOP_DISABLE_MASK		0x00000040#define IOMMU_DEV_TABLE_SNOOP_DISABLE_SHIFT		6#define IOMMU_DEV_TABLE_ALLOW_EXCLUSION_MASK		0x00000080#define IOMMU_DEV_TABLE_ALLOW_EXCLUSION_SHIFT		7#define IOMMU_DEV_TABLE_SYS_MGT_MSG_ENABLE_MASK		0x00000300#define IOMMU_DEV_TABLE_SYS_MGT_MSG_ENABLE_SHIFT	8/* DeviceTable Entry[159:128] */#define IOMMU_DEV_TABLE_INT_VALID_MASK          0x00000001#define IOMMU_DEV_TABLE_INT_VALID_SHIFT         0#define IOMMU_DEV_TABLE_INT_TABLE_LENGTH_MASK       0x0000001E#define IOMMU_DEV_TABLE_INT_TABLE_LENGTH_SHIFT      1#define IOMMU_DEV_TABLE_INT_TABLE_IGN_UNMAPPED_MASK      0x0000000020#define IOMMU_DEV_TABLE_INT_TABLE_IGN_UNMAPPED_SHIFT      5#define IOMMU_DEV_TABLE_INT_TABLE_PTR_LOW_MASK      0xFFFFFFC0#define IOMMU_DEV_TABLE_INT_TABLE_PTR_LOW_SHIFT     6/* DeviceTable Entry[191:160] */#define IOMMU_DEV_TABLE_INT_TABLE_PTR_HIGH_MASK     0x000FFFFF#define IOMMU_DEV_TABLE_INT_TABLE_PTR_HIGH_SHIFT    0#define IOMMU_DEV_TABLE_INIT_PASSTHRU_MASK      0x01000000#define IOMMU_DEV_TABLE_INIT_PASSTHRU_SHIFT     24#define IOMMU_DEV_TABLE_EINT_PASSTHRU_MASK      0x02000000#define IOMMU_DEV_TABLE_EINT_PASSTHRU_SHIFT     25#define IOMMU_DEV_TABLE_NMI_PASSTHRU_MASK       0x04000000#define IOMMU_DEV_TABLE_NMI_PASSTHRU_SHIFT      26#define IOMMU_DEV_TABLE_INT_CONTROL_MASK        0x30000000#define IOMMU_DEV_TABLE_INT_CONTROL_SHIFT       28#define IOMMU_DEV_TABLE_LINT0_ENABLE_MASK       0x40000000#define IOMMU_DEV_TABLE_LINT0_ENABLE_SHIFT      30#define IOMMU_DEV_TABLE_LINT1_ENABLE_MASK       0x80000000#define IOMMU_DEV_TABLE_LINT1_ENABLE_SHIFT      31/* Command Buffer */#define IOMMU_CMD_BUFFER_BASE_LOW_OFFSET	0x08#define IOMMU_CMD_BUFFER_BASE_HIGH_OFFSET	0x0C#define IOMMU_CMD_BUFFER_HEAD_OFFSET		0x2000#define IOMMU_CMD_BUFFER_TAIL_OFFSET		0x2008#define IOMMU_CMD_BUFFER_BASE_LOW_MASK		0xFFFFF000#define IOMMU_CMD_BUFFER_BASE_LOW_SHIFT		12#define IOMMU_CMD_BUFFER_BASE_HIGH_MASK		0x000FFFFF#define IOMMU_CMD_BUFFER_BASE_HIGH_SHIFT	0#define IOMMU_CMD_BUFFER_LENGTH_MASK		0x0F000000#define IOMMU_CMD_BUFFER_LENGTH_SHIFT		24