Arthur Heymans | 92a3b67 | 2023-06-22 21:30:58 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| 2 | |
| 3 | #include <acpi/acpi.h> |
| 4 | #include <arch/ioapic.h> |
| 5 | #include <cpu/cpu.h> |
| 6 | #include <version.h> |
| 7 | |
| 8 | void acpi_create_dmar(acpi_dmar_t *dmar, enum dmar_flags flags, |
| 9 | unsigned long (*acpi_fill_dmar)(unsigned long)) |
| 10 | { |
| 11 | acpi_header_t *header = &(dmar->header); |
| 12 | unsigned long current = (unsigned long)dmar + sizeof(acpi_dmar_t); |
| 13 | |
| 14 | memset((void *)dmar, 0, sizeof(acpi_dmar_t)); |
| 15 | |
| 16 | if (!header) |
| 17 | return; |
| 18 | |
| 19 | /* Fill out header fields. */ |
| 20 | memcpy(header->signature, "DMAR", 4); |
| 21 | memcpy(header->oem_id, OEM_ID, 6); |
| 22 | memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8); |
| 23 | memcpy(header->asl_compiler_id, ASLC, 4); |
| 24 | |
| 25 | header->asl_compiler_revision = asl_revision; |
| 26 | header->length = sizeof(acpi_dmar_t); |
| 27 | header->revision = get_acpi_table_revision(DMAR); |
| 28 | |
| 29 | dmar->host_address_width = cpu_phys_address_size() - 1; |
| 30 | dmar->flags = flags; |
| 31 | |
| 32 | current = acpi_fill_dmar(current); |
| 33 | |
| 34 | /* (Re)calculate length and checksum. */ |
| 35 | header->length = current - (unsigned long)dmar; |
| 36 | header->checksum = acpi_checksum((void *)dmar, header->length); |
| 37 | } |
| 38 | |
| 39 | unsigned long acpi_create_dmar_drhd(unsigned long current, u8 flags, |
| 40 | u16 segment, u64 bar) |
| 41 | { |
| 42 | dmar_entry_t *drhd = (dmar_entry_t *)current; |
| 43 | memset(drhd, 0, sizeof(*drhd)); |
| 44 | drhd->type = DMAR_DRHD; |
| 45 | drhd->length = sizeof(*drhd); /* will be fixed up later */ |
| 46 | drhd->flags = flags; |
| 47 | drhd->segment = segment; |
| 48 | drhd->bar = bar; |
| 49 | |
| 50 | return drhd->length; |
| 51 | } |
| 52 | |
| 53 | unsigned long acpi_create_dmar_rmrr(unsigned long current, u16 segment, |
| 54 | u64 bar, u64 limit) |
| 55 | { |
| 56 | dmar_rmrr_entry_t *rmrr = (dmar_rmrr_entry_t *)current; |
| 57 | memset(rmrr, 0, sizeof(*rmrr)); |
| 58 | rmrr->type = DMAR_RMRR; |
| 59 | rmrr->length = sizeof(*rmrr); /* will be fixed up later */ |
| 60 | rmrr->segment = segment; |
| 61 | rmrr->bar = bar; |
| 62 | rmrr->limit = limit; |
| 63 | |
| 64 | return rmrr->length; |
| 65 | } |
| 66 | |
| 67 | unsigned long acpi_create_dmar_atsr(unsigned long current, u8 flags, |
| 68 | u16 segment) |
| 69 | { |
| 70 | dmar_atsr_entry_t *atsr = (dmar_atsr_entry_t *)current; |
| 71 | memset(atsr, 0, sizeof(*atsr)); |
| 72 | atsr->type = DMAR_ATSR; |
| 73 | atsr->length = sizeof(*atsr); /* will be fixed up later */ |
| 74 | atsr->flags = flags; |
| 75 | atsr->segment = segment; |
| 76 | |
| 77 | return atsr->length; |
| 78 | } |
| 79 | |
| 80 | unsigned long acpi_create_dmar_rhsa(unsigned long current, u64 base_addr, |
| 81 | u32 proximity_domain) |
| 82 | { |
| 83 | dmar_rhsa_entry_t *rhsa = (dmar_rhsa_entry_t *)current; |
| 84 | memset(rhsa, 0, sizeof(*rhsa)); |
| 85 | rhsa->type = DMAR_RHSA; |
| 86 | rhsa->length = sizeof(*rhsa); |
| 87 | rhsa->base_address = base_addr; |
| 88 | rhsa->proximity_domain = proximity_domain; |
| 89 | |
| 90 | return rhsa->length; |
| 91 | } |
| 92 | |
| 93 | unsigned long acpi_create_dmar_andd(unsigned long current, u8 device_number, |
| 94 | const char *device_name) |
| 95 | { |
| 96 | dmar_andd_entry_t *andd = (dmar_andd_entry_t *)current; |
| 97 | int andd_len = sizeof(dmar_andd_entry_t) + strlen(device_name) + 1; |
| 98 | memset(andd, 0, andd_len); |
| 99 | andd->type = DMAR_ANDD; |
| 100 | andd->length = andd_len; |
| 101 | andd->device_number = device_number; |
| 102 | memcpy(&andd->device_name, device_name, strlen(device_name)); |
| 103 | |
| 104 | return andd->length; |
| 105 | } |
| 106 | |
| 107 | unsigned long acpi_create_dmar_satc(unsigned long current, u8 flags, u16 segment) |
| 108 | { |
| 109 | dmar_satc_entry_t *satc = (dmar_satc_entry_t *)current; |
| 110 | int satc_len = sizeof(dmar_satc_entry_t); |
| 111 | memset(satc, 0, satc_len); |
| 112 | satc->type = DMAR_SATC; |
| 113 | satc->length = satc_len; |
| 114 | satc->flags = flags; |
| 115 | satc->segment_number = segment; |
| 116 | |
| 117 | return satc->length; |
| 118 | } |
| 119 | |
| 120 | void acpi_dmar_drhd_fixup(unsigned long base, unsigned long current) |
| 121 | { |
| 122 | dmar_entry_t *drhd = (dmar_entry_t *)base; |
| 123 | drhd->length = current - base; |
| 124 | } |
| 125 | |
| 126 | void acpi_dmar_rmrr_fixup(unsigned long base, unsigned long current) |
| 127 | { |
| 128 | dmar_rmrr_entry_t *rmrr = (dmar_rmrr_entry_t *)base; |
| 129 | rmrr->length = current - base; |
| 130 | } |
| 131 | |
| 132 | void acpi_dmar_atsr_fixup(unsigned long base, unsigned long current) |
| 133 | { |
| 134 | dmar_atsr_entry_t *atsr = (dmar_atsr_entry_t *)base; |
| 135 | atsr->length = current - base; |
| 136 | } |
| 137 | |
| 138 | void acpi_dmar_satc_fixup(unsigned long base, unsigned long current) |
| 139 | { |
| 140 | dmar_satc_entry_t *satc = (dmar_satc_entry_t *)base; |
| 141 | satc->length = current - base; |
| 142 | } |
| 143 | |
| 144 | static unsigned long acpi_create_dmar_ds(unsigned long current, |
| 145 | enum dev_scope_type type, u8 enumeration_id, u8 bus, u8 dev, u8 fn) |
| 146 | { |
| 147 | /* we don't support longer paths yet */ |
| 148 | const size_t dev_scope_length = sizeof(dev_scope_t) + 2; |
| 149 | |
| 150 | dev_scope_t *ds = (dev_scope_t *)current; |
| 151 | memset(ds, 0, dev_scope_length); |
| 152 | ds->type = type; |
| 153 | ds->length = dev_scope_length; |
| 154 | ds->enumeration = enumeration_id; |
| 155 | ds->start_bus = bus; |
| 156 | ds->path[0].dev = dev; |
| 157 | ds->path[0].fn = fn; |
| 158 | |
| 159 | return ds->length; |
| 160 | } |
| 161 | |
| 162 | unsigned long acpi_create_dmar_ds_pci_br(unsigned long current, u8 bus, |
| 163 | u8 dev, u8 fn) |
| 164 | { |
| 165 | return acpi_create_dmar_ds(current, |
| 166 | SCOPE_PCI_SUB, 0, bus, dev, fn); |
| 167 | } |
| 168 | |
| 169 | unsigned long acpi_create_dmar_ds_pci(unsigned long current, u8 bus, |
| 170 | u8 dev, u8 fn) |
| 171 | { |
| 172 | return acpi_create_dmar_ds(current, |
| 173 | SCOPE_PCI_ENDPOINT, 0, bus, dev, fn); |
| 174 | } |
| 175 | |
| 176 | unsigned long acpi_create_dmar_ds_ioapic(unsigned long current, |
| 177 | u8 enumeration_id, u8 bus, u8 dev, u8 fn) |
| 178 | { |
| 179 | return acpi_create_dmar_ds(current, |
| 180 | SCOPE_IOAPIC, enumeration_id, bus, dev, fn); |
| 181 | } |
| 182 | |
| 183 | unsigned long acpi_create_dmar_ds_ioapic_from_hw(unsigned long current, |
| 184 | u32 addr, u8 bus, u8 dev, u8 fn) |
| 185 | { |
| 186 | u8 enumeration_id = get_ioapic_id((void *)(uintptr_t)addr); |
| 187 | return acpi_create_dmar_ds(current, |
| 188 | SCOPE_IOAPIC, enumeration_id, bus, dev, fn); |
| 189 | } |
| 190 | |
| 191 | unsigned long acpi_create_dmar_ds_msi_hpet(unsigned long current, |
| 192 | u8 enumeration_id, u8 bus, u8 dev, u8 fn) |
| 193 | { |
| 194 | return acpi_create_dmar_ds(current, |
| 195 | SCOPE_MSI_HPET, enumeration_id, bus, dev, fn); |
| 196 | } |