projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 8d283c35 JR |
1 | /* |
| 2 | * Copyright (C) 2007-2008 Advanced Micro Devices, Inc. | |
| 3 | * Author: Joerg Roedel <[email protected]> | |
| 4 | * Leo Duran <[email protected]> | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or modify it | |
| 7 | * under the terms of the GNU General Public License version 2 as published | |
| 8 | * by the Free Software Foundation. | |
| 9 | * | |
| 10 | * This program is distributed in the hope that it will be useful, | |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 | * GNU General Public License for more details. | |
| 14 | * | |
| 15 | * You should have received a copy of the GNU General Public License | |
| 16 | * along with this program; if not, write to the Free Software | |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | */ | |
| 19 | ||
| 20 | #ifndef __AMD_IOMMU_TYPES_H__ | |
| 21 | #define __AMD_IOMMU_TYPES_H__ | |
| 22 | ||
| 23 | #include <linux/types.h> | |
| 24 | #include <linux/list.h> | |
| 25 | #include <linux/spinlock.h> | |
| 26 | ||
| 27 | /* | |
| 28 | * some size calculation constants | |
| 29 | */ | |
| 30 | #define DEV_TABLE_ENTRY_SIZE 256 | |
| 31 | #define ALIAS_TABLE_ENTRY_SIZE 2 | |
| 32 | #define RLOOKUP_TABLE_ENTRY_SIZE (sizeof(void *)) | |
| 33 | ||
| 34 | /* helper macros */ | |
| 35 | #define LOW_U32(x) ((x) & ((1ULL << 32)-1)) | |
| 36 | #define HIGH_U32(x) (LOW_U32((x) >> 32)) | |
| 37 | ||
| 38 | /* Length of the MMIO region for the AMD IOMMU */ | |
| 39 | #define MMIO_REGION_LENGTH 0x4000 | |
| 40 | ||
| 41 | /* Capability offsets used by the driver */ | |
| 42 | #define MMIO_CAP_HDR_OFFSET 0x00 | |
| 43 | #define MMIO_RANGE_OFFSET 0x0c | |
| 44 | ||
| 45 | /* Masks, shifts and macros to parse the device range capability */ | |
| 46 | #define MMIO_RANGE_LD_MASK 0xff000000 | |
| 47 | #define MMIO_RANGE_FD_MASK 0x00ff0000 | |
| 48 | #define MMIO_RANGE_BUS_MASK 0x0000ff00 | |
| 49 | #define MMIO_RANGE_LD_SHIFT 24 | |
| 50 | #define MMIO_RANGE_FD_SHIFT 16 | |
| 51 | #define MMIO_RANGE_BUS_SHIFT 8 | |
| 52 | #define MMIO_GET_LD(x) (((x) & MMIO_RANGE_LD_MASK) >> MMIO_RANGE_LD_SHIFT) | |
| 53 | #define MMIO_GET_FD(x) (((x) & MMIO_RANGE_FD_MASK) >> MMIO_RANGE_FD_SHIFT) | |
| 54 | #define MMIO_GET_BUS(x) (((x) & MMIO_RANGE_BUS_MASK) >> MMIO_RANGE_BUS_SHIFT) | |
| 55 | ||
| 56 | /* Flag masks for the AMD IOMMU exclusion range */ | |
| 57 | #define MMIO_EXCL_ENABLE_MASK 0x01ULL | |
| 58 | #define MMIO_EXCL_ALLOW_MASK 0x02ULL | |
| 59 | ||
| 60 | /* Used offsets into the MMIO space */ | |
| 61 | #define MMIO_DEV_TABLE_OFFSET 0x0000 | |
| 62 | #define MMIO_CMD_BUF_OFFSET 0x0008 | |
| 63 | #define MMIO_EVT_BUF_OFFSET 0x0010 | |
| 64 | #define MMIO_CONTROL_OFFSET 0x0018 | |
| 65 | #define MMIO_EXCL_BASE_OFFSET 0x0020 | |
| 66 | #define MMIO_EXCL_LIMIT_OFFSET 0x0028 | |
| 67 | #define MMIO_CMD_HEAD_OFFSET 0x2000 | |
| 68 | #define MMIO_CMD_TAIL_OFFSET 0x2008 | |
| 69 | #define MMIO_EVT_HEAD_OFFSET 0x2010 | |
| 70 | #define MMIO_EVT_TAIL_OFFSET 0x2018 | |
| 71 | #define MMIO_STATUS_OFFSET 0x2020 | |
| 72 | ||
| 73 | /* feature control bits */ | |
| 74 | #define CONTROL_IOMMU_EN 0x00ULL | |
| 75 | #define CONTROL_HT_TUN_EN 0x01ULL | |
| 76 | #define CONTROL_EVT_LOG_EN 0x02ULL | |
| 77 | #define CONTROL_EVT_INT_EN 0x03ULL | |
| 78 | #define CONTROL_COMWAIT_EN 0x04ULL | |
| 79 | #define CONTROL_PASSPW_EN 0x08ULL | |
| 80 | #define CONTROL_RESPASSPW_EN 0x09ULL | |
| 81 | #define CONTROL_COHERENT_EN 0x0aULL | |
| 82 | #define CONTROL_ISOC_EN 0x0bULL | |
| 83 | #define CONTROL_CMDBUF_EN 0x0cULL | |
| 84 | #define CONTROL_PPFLOG_EN 0x0dULL | |
| 85 | #define CONTROL_PPFINT_EN 0x0eULL | |
| 86 | ||
| 87 | /* command specific defines */ | |
| 88 | #define CMD_COMPL_WAIT 0x01 | |
| 89 | #define CMD_INV_DEV_ENTRY 0x02 | |
| 90 | #define CMD_INV_IOMMU_PAGES 0x03 | |
| 91 | ||
| 92 | #define CMD_COMPL_WAIT_STORE_MASK 0x01 | |
| 93 | #define CMD_INV_IOMMU_PAGES_SIZE_MASK 0x01 | |
| 94 | #define CMD_INV_IOMMU_PAGES_PDE_MASK 0x02 | |
| 95 | ||
| 96 | /* macros and definitions for device table entries */ | |
| 97 | #define DEV_ENTRY_VALID 0x00 | |
| 98 | #define DEV_ENTRY_TRANSLATION 0x01 | |
| 99 | #define DEV_ENTRY_IR 0x3d | |
| 100 | #define DEV_ENTRY_IW 0x3e | |
| 101 | #define DEV_ENTRY_EX 0x67 | |
| 102 | #define DEV_ENTRY_SYSMGT1 0x68 | |
| 103 | #define DEV_ENTRY_SYSMGT2 0x69 | |
| 104 | #define DEV_ENTRY_INIT_PASS 0xb8 | |
| 105 | #define DEV_ENTRY_EINT_PASS 0xb9 | |
| 106 | #define DEV_ENTRY_NMI_PASS 0xba | |
| 107 | #define DEV_ENTRY_LINT0_PASS 0xbe | |
| 108 | #define DEV_ENTRY_LINT1_PASS 0xbf | |
| 109 | ||
| 110 | /* constants to configure the command buffer */ | |
| 111 | #define CMD_BUFFER_SIZE 8192 | |
| 112 | #define CMD_BUFFER_ENTRIES 512 | |
| 113 | #define MMIO_CMD_SIZE_SHIFT 56 | |
| 114 | #define MMIO_CMD_SIZE_512 (0x9ULL << MMIO_CMD_SIZE_SHIFT) | |
| 115 | ||
| 116 | #define PAGE_MODE_1_LEVEL 0x01 | |
| 117 | #define PAGE_MODE_2_LEVEL 0x02 | |
| 118 | #define PAGE_MODE_3_LEVEL 0x03 | |
| 119 | ||
| 120 | #define IOMMU_PDE_NL_0 0x000ULL | |
| 121 | #define IOMMU_PDE_NL_1 0x200ULL | |
| 122 | #define IOMMU_PDE_NL_2 0x400ULL | |
| 123 | #define IOMMU_PDE_NL_3 0x600ULL | |
| 124 | ||
| 125 | #define IOMMU_PTE_L2_INDEX(address) (((address) >> 30) & 0x1ffULL) | |
| 126 | #define IOMMU_PTE_L1_INDEX(address) (((address) >> 21) & 0x1ffULL) | |
| 127 | #define IOMMU_PTE_L0_INDEX(address) (((address) >> 12) & 0x1ffULL) | |
| 128 | ||
| 129 | #define IOMMU_MAP_SIZE_L1 (1ULL << 21) | |
| 130 | #define IOMMU_MAP_SIZE_L2 (1ULL << 30) | |
| 131 | #define IOMMU_MAP_SIZE_L3 (1ULL << 39) | |
| 132 | ||
| 133 | #define IOMMU_PTE_P (1ULL << 0) | |
| 134 | #define IOMMU_PTE_U (1ULL << 59) | |
| 135 | #define IOMMU_PTE_FC (1ULL << 60) | |
| 136 | #define IOMMU_PTE_IR (1ULL << 61) | |
| 137 | #define IOMMU_PTE_IW (1ULL << 62) | |
| 138 | ||
| 139 | #define IOMMU_L1_PDE(address) \ | |
| 140 | ((address) | IOMMU_PDE_NL_1 | IOMMU_PTE_P | IOMMU_PTE_IR | IOMMU_PTE_IW) | |
| 141 | #define IOMMU_L2_PDE(address) \ | |
| 142 | ((address) | IOMMU_PDE_NL_2 | IOMMU_PTE_P | IOMMU_PTE_IR | IOMMU_PTE_IW) | |
| 143 | ||
| 144 | #define IOMMU_PAGE_MASK (((1ULL << 52) - 1) & ~0xfffULL) | |
| 145 | #define IOMMU_PTE_PRESENT(pte) ((pte) & IOMMU_PTE_P) | |
| 146 | #define IOMMU_PTE_PAGE(pte) (phys_to_virt((pte) & IOMMU_PAGE_MASK)) | |
| 147 | #define IOMMU_PTE_MODE(pte) (((pte) >> 9) & 0x07) | |
| 148 | ||
| 149 | #define IOMMU_PROT_MASK 0x03 | |
| 150 | #define IOMMU_PROT_IR 0x01 | |
| 151 | #define IOMMU_PROT_IW 0x02 | |
| 152 | ||
| 153 | /* IOMMU capabilities */ | |
| 154 | #define IOMMU_CAP_IOTLB 24 | |
| 155 | #define IOMMU_CAP_NPCACHE 26 | |
| 156 | ||
| 157 | #define MAX_DOMAIN_ID 65536 | |
| 158 | ||
| 159 | struct protection_domain { | |
| 160 | spinlock_t lock; | |
| 161 | u16 id; | |
| 162 | int mode; | |
| 163 | u64 *pt_root; | |
| 164 | void *priv; | |
| 165 | }; | |
| 166 | ||
| 167 | struct dma_ops_domain { | |
| 168 | struct list_head list; | |
| 169 | struct protection_domain domain; | |
| 170 | unsigned long aperture_size; | |
| 171 | unsigned long next_bit; | |
| 172 | unsigned long *bitmap; | |
| 173 | u64 **pte_pages; | |
| 174 | }; | |
| 175 | ||
| 176 | struct amd_iommu { | |
| 177 | struct list_head list; | |
| 178 | spinlock_t lock; | |
| 179 | ||
| 180 | u16 devid; | |
| 181 | u16 cap_ptr; | |
| 182 | ||
| 183 | u64 mmio_phys; | |
| 184 | u8 *mmio_base; | |
| 185 | u32 cap; | |
| 186 | u16 first_device; | |
| 187 | u16 last_device; | |
| 188 | u64 exclusion_start; | |
| 189 | u64 exclusion_length; | |
| 190 | ||
| 191 | u8 *cmd_buf; | |
| 192 | u32 cmd_buf_size; | |
| 193 | ||
| 194 | int need_sync; | |
| 195 | ||
| 196 | struct dma_ops_domain *default_dom; | |
| 197 | }; | |
| 198 | ||
| 199 | extern struct list_head amd_iommu_list; | |
| 200 | ||
| 201 | struct dev_table_entry { | |
| 202 | u32 data[8]; | |
| 203 | }; | |
| 204 | ||
| 205 | struct unity_map_entry { | |
| 206 | struct list_head list; | |
| 207 | u16 devid_start; | |
| 208 | u16 devid_end; | |
| 209 | u64 address_start; | |
| 210 | u64 address_end; | |
| 211 | int prot; | |
| 212 | }; | |
| 213 | ||
| 214 | extern struct list_head amd_iommu_unity_map; | |
| 215 | ||
| 216 | /* data structures for device handling */ | |
| 217 | extern struct dev_table_entry *amd_iommu_dev_table; | |
| 218 | extern u16 *amd_iommu_alias_table; | |
| 219 | extern struct amd_iommu **amd_iommu_rlookup_table; | |
| 220 | ||
| 221 | extern unsigned amd_iommu_aperture_order; | |
| 222 | ||
| 223 | extern u16 amd_iommu_last_bdf; | |
| 224 | ||
| 225 | /* data structures for protection domain handling */ | |
| 226 | extern struct protection_domain **amd_iommu_pd_table; | |
| 227 | extern unsigned long *amd_iommu_pd_alloc_bitmap; | |
| 228 | ||
| 229 | extern int amd_iommu_isolate; | |
| 230 | ||
| 231 | static inline void print_devid(u16 devid, int nl) | |
| 232 | { | |
| 233 | int bus = devid >> 8; | |
| 234 | int dev = devid >> 3 & 0x1f; | |
| 235 | int fn = devid & 0x07; | |
| 236 | ||
| 237 | printk("%02x:%02x.%x", bus, dev, fn); | |
| 238 | if (nl) | |
| 239 | printk("\n"); | |
| 240 | } | |
| 241 | ||
| 242 | #endif |