| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef _ASM_S390_PCI_DMA_H |
| #define _ASM_S390_PCI_DMA_H |
| |
| /* I/O Translation Anchor (IOTA) */ |
| enum zpci_ioat_dtype { |
| ZPCI_IOTA_STO = 0, |
| ZPCI_IOTA_RTTO = 1, |
| ZPCI_IOTA_RSTO = 2, |
| ZPCI_IOTA_RFTO = 3, |
| ZPCI_IOTA_PFAA = 4, |
| ZPCI_IOTA_IOPFAA = 5, |
| ZPCI_IOTA_IOPTO = 7 |
| }; |
| |
| #define ZPCI_IOTA_IOT_ENABLED 0x800UL |
| #define ZPCI_IOTA_DT_ST (ZPCI_IOTA_STO << 2) |
| #define ZPCI_IOTA_DT_RT (ZPCI_IOTA_RTTO << 2) |
| #define ZPCI_IOTA_DT_RS (ZPCI_IOTA_RSTO << 2) |
| #define ZPCI_IOTA_DT_RF (ZPCI_IOTA_RFTO << 2) |
| #define ZPCI_IOTA_DT_PF (ZPCI_IOTA_PFAA << 2) |
| #define ZPCI_IOTA_FS_4K 0 |
| #define ZPCI_IOTA_FS_1M 1 |
| #define ZPCI_IOTA_FS_2G 2 |
| #define ZPCI_KEY (PAGE_DEFAULT_KEY << 5) |
| |
| #define ZPCI_TABLE_SIZE_RT (1UL << 42) |
| |
| #define ZPCI_IOTA_STO_FLAG (ZPCI_IOTA_IOT_ENABLED | ZPCI_KEY | ZPCI_IOTA_DT_ST) |
| #define ZPCI_IOTA_RTTO_FLAG (ZPCI_IOTA_IOT_ENABLED | ZPCI_KEY | ZPCI_IOTA_DT_RT) |
| #define ZPCI_IOTA_RSTO_FLAG (ZPCI_IOTA_IOT_ENABLED | ZPCI_KEY | ZPCI_IOTA_DT_RS) |
| #define ZPCI_IOTA_RFTO_FLAG (ZPCI_IOTA_IOT_ENABLED | ZPCI_KEY | ZPCI_IOTA_DT_RF) |
| #define ZPCI_IOTA_RFAA_FLAG (ZPCI_IOTA_IOT_ENABLED | ZPCI_KEY | ZPCI_IOTA_DT_PF | ZPCI_IOTA_FS_2G) |
| |
| /* I/O Region and segment tables */ |
| #define ZPCI_INDEX_MASK 0x7ffUL |
| |
| #define ZPCI_TABLE_TYPE_MASK 0xc |
| #define ZPCI_TABLE_TYPE_RFX 0xc |
| #define ZPCI_TABLE_TYPE_RSX 0x8 |
| #define ZPCI_TABLE_TYPE_RTX 0x4 |
| #define ZPCI_TABLE_TYPE_SX 0x0 |
| |
| #define ZPCI_TABLE_LEN_RFX 0x3 |
| #define ZPCI_TABLE_LEN_RSX 0x3 |
| #define ZPCI_TABLE_LEN_RTX 0x3 |
| |
| #define ZPCI_TABLE_OFFSET_MASK 0xc0 |
| #define ZPCI_TABLE_SIZE 0x4000 |
| #define ZPCI_TABLE_ALIGN ZPCI_TABLE_SIZE |
| #define ZPCI_TABLE_ENTRY_SIZE (sizeof(unsigned long)) |
| #define ZPCI_TABLE_ENTRIES (ZPCI_TABLE_SIZE / ZPCI_TABLE_ENTRY_SIZE) |
| |
| #define ZPCI_TABLE_BITS 11 |
| #define ZPCI_PT_BITS 8 |
| #define ZPCI_ST_SHIFT (ZPCI_PT_BITS + PAGE_SHIFT) |
| #define ZPCI_RT_SHIFT (ZPCI_ST_SHIFT + ZPCI_TABLE_BITS) |
| |
| #define ZPCI_RTE_FLAG_MASK 0x3fffUL |
| #define ZPCI_RTE_ADDR_MASK (~ZPCI_RTE_FLAG_MASK) |
| #define ZPCI_STE_FLAG_MASK 0x7ffUL |
| #define ZPCI_STE_ADDR_MASK (~ZPCI_STE_FLAG_MASK) |
| |
| /* I/O Page tables */ |
| #define ZPCI_PTE_VALID_MASK 0x400 |
| #define ZPCI_PTE_INVALID 0x400 |
| #define ZPCI_PTE_VALID 0x000 |
| #define ZPCI_PT_SIZE 0x800 |
| #define ZPCI_PT_ALIGN ZPCI_PT_SIZE |
| #define ZPCI_PT_ENTRIES (ZPCI_PT_SIZE / ZPCI_TABLE_ENTRY_SIZE) |
| #define ZPCI_PT_MASK (ZPCI_PT_ENTRIES - 1) |
| |
| #define ZPCI_PTE_FLAG_MASK 0xfffUL |
| #define ZPCI_PTE_ADDR_MASK (~ZPCI_PTE_FLAG_MASK) |
| |
| /* Shared bits */ |
| #define ZPCI_TABLE_VALID 0x00 |
| #define ZPCI_TABLE_INVALID 0x20 |
| #define ZPCI_TABLE_PROTECTED 0x200 |
| #define ZPCI_TABLE_UNPROTECTED 0x000 |
| |
| #define ZPCI_TABLE_VALID_MASK 0x20 |
| #define ZPCI_TABLE_PROT_MASK 0x200 |
| |
| struct zpci_iommu_ctrs { |
| atomic64_t mapped_pages; |
| atomic64_t unmapped_pages; |
| atomic64_t global_rpcits; |
| atomic64_t sync_map_rpcits; |
| atomic64_t sync_rpcits; |
| }; |
| |
| struct zpci_dev; |
| |
| struct zpci_iommu_ctrs *zpci_get_iommu_ctrs(struct zpci_dev *zdev); |
| |
| #endif |