intel_extreme: find VBT in OpRegion version 2.0 and from 2.1
we check the OpRegion version and use the rvda pointer when available. from 2.1 the pointer is relative. Change-Id: I64d8aea65368aa3c5597f63a2b96b6a430e04315 Reviewed-on: https://review.haiku-os.org/c/haiku/+/5109 Reviewed-by: Jérôme Duval <[email protected]> Tested-by: Commit checker robot <[email protected]>
This commit is contained in:
Jérôme Duval
@@ -159,86 +159,167 @@ dumprom(void *rom, uint32 size, intel_info &info)
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PROM-programmed timings info when compensation mode is off on your machine.
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PROM-programmed timings info when compensation mode is off on your machine.
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*/
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*/
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// outdated: https://01.org/sites/default/files/documentation/skl_opregion_rev0p5.pdf
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#define ASLS 0xfc // ASL Storage.
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#define ASLS 0xfc // ASL Storage.
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#define OPREGION_SIGNATURE "IntelGraphicsMem"
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#define OPREGION_SIGNATURE "IntelGraphicsMem"
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#define OPREGION_ASLE_OFFSET 0x300
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#define OPREGION_VBT_OFFSET 0x400
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#define MBOX_ACPI (1 << 0)
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#define MBOX_SWSCI (1 << 1)
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#define MBOX_ASLE (1 << 2)
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#define MBOX_ASLE_EXT (1 << 3)
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struct opregion_header {
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uint8 signature[16];
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uint32 size;
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uint8 reserved;
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uint8 revision_version;
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uint8 minor_version;
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uint8 major_version;
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uint8 sver[32];
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uint8 vver[16];
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uint8 gver[16];
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uint32 mboxes;
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uint32 driver_model;
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uint32 platform_configuration;
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uint8 gop_version[32];
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uint8 rsvd[124];
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} __attribute__((packed));
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struct opregion_asle {
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uint32 ardy;
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uint32 aslc;
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uint32 tche;
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uint32 alsi;
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uint32 bclp;
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uint32 pfit;
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uint32 cblv;
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uint16 bclm[20];
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uint32 cpfm;
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uint32 epfm;
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uint8 plut[74];
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uint32 pfmb;
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uint32 cddv;
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uint32 pcft;
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uint32 srot;
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uint32 iuer;
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uint64 fdss;
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uint32 fdsp;
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uint32 stat;
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uint64 rvda;
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uint32 rvds;
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uint8 rsvd[58];
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} __attribute__((packed));
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static bool
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static bool
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get_bios(int* vbtOffset)
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get_bios(int* vbtOffset)
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{
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{
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STATIC_ASSERT(sizeof(opregion_header) == 0x100);
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STATIC_ASSERT(sizeof(opregion_asle) == 0x100);
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intel_info &info = *gDeviceInfo[0];
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intel_info &info = *gDeviceInfo[0];
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// first try to fetch Intel OpRegion which should be polulated by the BIOS at start
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// first try to fetch Intel OpRegion which should be populated by the BIOS at start
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uint64_t kVBIOSAddress = 0;
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uint32 kVBIOSSize;
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uint32 kVBIOSSize = 8 * 1024;
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// get OpRegion - see Intel ACPI IGD info in acpi_igd_opregion_spec_0.pdf
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for (uint32 romMethod = 0; romMethod < 2; romMethod++) {
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kVBIOSAddress = get_pci_config(info.pci, ASLS, 4);
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switch(romMethod) {
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if (!kVBIOSAddress) {
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case 0:
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TRACE((DEVICE_NAME ": ACPI OpRegion not supported!\n"));
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{
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} else {
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// get OpRegion - see Intel ACPI IGD info in acpi_igd_opregion_spec_0.pdf
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TRACE((DEVICE_NAME ": Graphic OpRegion physical addr: 0x%" B_PRIx64
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uint64 kVBIOSAddress = get_pci_config(info.pci, ASLS, 4);
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"; size: 0x%" B_PRIx32 "\n", kVBIOSAddress, kVBIOSSize));
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if (kVBIOSAddress == 0) {
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vbios.area = map_physical_memory("ASLS mapping", kVBIOSAddress,
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TRACE((DEVICE_NAME ": ACPI OpRegion not supported!\n"));
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kVBIOSSize, B_ANY_KERNEL_ADDRESS, B_KERNEL_READ_AREA, (void **)&vbios.memory);
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continue;
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}
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if (vbios.area >= 0) {
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kVBIOSSize = 8 * 1024;
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TRACE((DEVICE_NAME ": mapping ASLS: 0x%" B_PRIx64 " -> %p\n",
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TRACE((DEVICE_NAME ": Graphic OpRegion physical addr: 0x%" B_PRIx64
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kVBIOSAddress, vbios.memory));
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"; size: 0x%" B_PRIx32 "\n", kVBIOSAddress, kVBIOSSize));
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// check if we got the ASLS and signature
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vbios.area = map_physical_memory("ASLS mapping", kVBIOSAddress,
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if (memcmp(vbios.memory, OPREGION_SIGNATURE, 16)) {
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kVBIOSSize, B_ANY_KERNEL_ADDRESS, B_KERNEL_READ_AREA, (void **)&vbios.memory);
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TRACE((DEVICE_NAME ": OpRegion signature mismatch\n"));
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if (vbios.area < 0)
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continue;
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TRACE((DEVICE_NAME ": mapping OpRegion: 0x%" B_PRIx64 " -> %p\n",
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kVBIOSAddress, vbios.memory));
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// check if we got the OpRegion and signature
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if (memcmp(vbios.memory, OPREGION_SIGNATURE, 16) != 0) {
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TRACE((DEVICE_NAME ": OpRegion signature mismatch\n"));
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delete_area(vbios.area);
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vbios.area = -1;
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continue;
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}
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opregion_header* header = (opregion_header*)vbios.memory;
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opregion_asle* asle = (opregion_asle*)(vbios.memory + OPREGION_ASLE_OFFSET);
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if (header->major_version < 2 || (header->mboxes & MBOX_ASLE) == 0
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|| asle->rvda == 0 || asle->rvds == 0) {
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vbios.memory += OPREGION_VBT_OFFSET;
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kVBIOSSize -= OPREGION_VBT_OFFSET;
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break;
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}
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uint64 rvda = asle->rvda;
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kVBIOSSize = asle->rvds;
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if (header->major_version > 3 || header->minor_version >= 1) {
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rvda += kVBIOSAddress;
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}
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TRACE((DEVICE_NAME ": RVDA physical addr: 0x%" B_PRIx64
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"; size: 0x%" B_PRIx32 "\n", rvda, kVBIOSSize));
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delete_area(vbios.area);
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delete_area(vbios.area);
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vbios.area = -1;
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vbios.area = map_physical_memory("RVDA mapping", rvda,
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// force using ISA legacy map as fall-back
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kVBIOSSize, B_ANY_KERNEL_ADDRESS, B_KERNEL_READ_AREA, (void **)&vbios.memory);
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kVBIOSAddress = 0;
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if (vbios.area < 0)
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continue;
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break;
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}
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case 1:
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{
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uint64 kVBIOSAddress = 0xc0000;
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kVBIOSSize = 64 * 1024;
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/* !!!DANGER!!!: mapping of BIOS using legacy location as a fallback,
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hence, if panel mode will be set using info from VBT this way, it will
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be taken from primary card's VBIOS */
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vbios.area = map_physical_memory("VBIOS mapping", kVBIOSAddress,
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kVBIOSSize, B_ANY_KERNEL_ADDRESS, B_KERNEL_READ_AREA, (void**)&vbios.memory);
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if (vbios.area < 0)
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continue;
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TRACE((DEVICE_NAME ": mapping VBIOS: 0x%" B_PRIx64 " -> %p\n",
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kVBIOSAddress, vbios.memory));
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break;
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}
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}
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} else {
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// mapping failed: force using ISA legacy map as fall-back
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kVBIOSAddress = 0;
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}
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}
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}
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if (!kVBIOSAddress) {
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// dump ROM to file if selected in settings file
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kVBIOSAddress = 0xc0000;
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if (read_settings_dumpRom())
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kVBIOSSize = 64 * 1024;
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dumprom(vbios.memory, kVBIOSSize, info);
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/* !!!DANGER!!!: mapping of BIOS using legacy location as a fallback,
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hence, if panel mode will be set using info from VBT this way, it will
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be taken from primary card's VBIOS */
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vbios.area = map_physical_memory("VBIOS mapping", kVBIOSAddress,
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kVBIOSSize, B_ANY_KERNEL_ADDRESS, B_KERNEL_READ_AREA, (void**)&vbios.memory);
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if (vbios.area < 0)
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// scan BIOS for VBT signature
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return false;
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*vbtOffset = kVBIOSSize;
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for (uint32 i = 0; i + 4 < kVBIOSSize; i += 4) {
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if (memcmp(vbios.memory + i, "$VBT", 4) == 0) {
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*vbtOffset = i;
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break;
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}
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}
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TRACE((DEVICE_NAME ": mapping VBIOS: 0x%" B_PRIx64 " -> %p\n",
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if ((*vbtOffset + (uint32)sizeof(vbt_header)) >= kVBIOSSize) {
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kVBIOSAddress, vbios.memory));
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TRACE((DEVICE_NAME": bad VBT offset : 0x%x\n", *vbtOffset));
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}
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delete_area(vbios.area);
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// dump ROM to file if selected in settings file
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if (read_settings_dumpRom())
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dumprom(vbios.memory, kVBIOSSize, info);
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// scan BIOS for VBT signature
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*vbtOffset = kVBIOSSize;
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for (uint32 i = 0; i + 4 < kVBIOSSize; i += 4) {
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if (memcmp(vbios.memory + i, "$VBT", 4) == 0) {
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*vbtOffset = i;
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continue;
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continue;
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}
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}
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struct vbt_header* vbt = (struct vbt_header*)(vbios.memory + *vbtOffset);
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if (memcmp(vbt->signature, "$VBT", 4) != 0) {
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TRACE((DEVICE_NAME": bad VBT signature: %20s\n", vbt->signature));
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delete_area(vbios.area);
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continue;
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}
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return true;
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}
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}
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if ((*vbtOffset + (uint32)sizeof(vbt_header)) >= kVBIOSSize) {
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return false;
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TRACE((DEVICE_NAME": bad VBT offset : 0x%x\n", *vbtOffset));
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delete_area(vbios.area);
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return false;
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}
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struct vbt_header* vbt = (struct vbt_header*)(vbios.memory + *vbtOffset);
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if (memcmp(vbt->signature, "$VBT", 4) != 0) {
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TRACE((DEVICE_NAME": bad VBT signature: %20s\n", vbt->signature));
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delete_area(vbios.area);
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return false;
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}
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return true;
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}
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}
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