From 76e58028d28e78431f9de3cee0b3c88d807fa39d Mon Sep 17 00:00:00 2001 From: Kevin O'Connor Date: Wed, 6 Mar 2013 21:50:09 -0500 Subject: acpi: Eliminate BDAT parameter passing to DSDT code. The "BDAT" construct is the only ACPI mechanism that relies on SeaBIOS reserved memory. Replace it with the SSDT based template system. Signed-off-by: Kevin O'Connor --- src/acpi-dsdt-pci-crs.dsl | 61 +++++++++++++++++------------------------------ src/acpi.c | 39 ++++++++++-------------------- src/acpi.h | 9 ------- src/ssdt-misc.dsl | 20 ++++++++++++++++ tools/acpi_extract.py | 17 ++++++++++++- 5 files changed, 71 insertions(+), 75 deletions(-) diff --git a/src/acpi-dsdt-pci-crs.dsl b/src/acpi-dsdt-pci-crs.dsl index 802eebc..d421891 100644 --- a/src/acpi-dsdt-pci-crs.dsl +++ b/src/acpi-dsdt-pci-crs.dsl @@ -56,52 +56,35 @@ Scope(\_SB.PCI0) { }) Method(_CRS, 0) { - /* see see acpi.h, struct bfld */ - External(BDAT, OpRegionObj) - Field(BDAT, QWordAcc, NoLock, Preserve) { - P0S, 64, - P0E, 64, - P0L, 64, - P1S, 64, - P1E, 64, - P1L, 64, - } - Field(BDAT, DWordAcc, NoLock, Preserve) { - P0SL, 32, - P0SH, 32, - P0EL, 32, - P0EH, 32, - P0LL, 32, - P0LH, 32, - P1SL, 32, - P1SH, 32, - P1EL, 32, - P1EH, 32, - P1LL, 32, - P1LH, 32, - } + /* Fields provided by dynamically created ssdt */ + External(P0S, IntObj) + External(P0E, IntObj) + External(P1V, IntObj) + External(P1S, BuffObj) + External(P1E, BuffObj) + External(P1L, BuffObj) /* fixup 32bit pci io window */ CreateDWordField(CRES, \_SB.PCI0.PW32._MIN, PS32) CreateDWordField(CRES, \_SB.PCI0.PW32._MAX, PE32) CreateDWordField(CRES, \_SB.PCI0.PW32._LEN, PL32) - Store(P0SL, PS32) - Store(P0EL, PE32) - Store(P0LL, PL32) + Store(P0S, PS32) + Store(P0E, PE32) + Store(Add(Subtract(P0E, P0S), 1), PL32) - If (LAnd(LEqual(P1SL, 0x00), LEqual(P1SH, 0x00))) { + If (LEqual(P1V, Zero)) { Return (CRES) - } Else { - /* fixup 64bit pci io window */ - CreateQWordField(CR64, \_SB.PCI0.PW64._MIN, PS64) - CreateQWordField(CR64, \_SB.PCI0.PW64._MAX, PE64) - CreateQWordField(CR64, \_SB.PCI0.PW64._LEN, PL64) - Store(P1S, PS64) - Store(P1E, PE64) - Store(P1L, PL64) - /* add window and return result */ - ConcatenateResTemplate(CRES, CR64, Local0) - Return (Local0) } + + /* fixup 64bit pci io window */ + CreateQWordField(CR64, \_SB.PCI0.PW64._MIN, PS64) + CreateQWordField(CR64, \_SB.PCI0.PW64._MAX, PE64) + CreateQWordField(CR64, \_SB.PCI0.PW64._LEN, PL64) + Store(P1S, PS64) + Store(P1E, PE64) + Store(P1L, PL64) + /* add window and return result */ + ConcatenateResTemplate(CRES, CR64, Local0) + Return (Local0) } } diff --git a/src/acpi.c b/src/acpi.c index 658ca50..98a5d40 100644 --- a/src/acpi.c +++ b/src/acpi.c @@ -501,7 +501,6 @@ build_ssdt(void) + (acpi_cpus * PROC_SIZEOF) // procs + (1+2+5+(12*acpi_cpus)) // NTFY + (6+2+1+(1*acpi_cpus)) // CPON - + 17 // BDAT + (1+3+4) // Scope(PCI0) + ((PCI_SLOTS - 1) * PCIHP_SIZEOF) // slots + (1+2+5+(12*(PCI_SLOTS - 1)))); // PCNT @@ -525,6 +524,19 @@ build_ssdt(void) ssdt_ptr[acpi_s4_name[0]] = 'X'; else ssdt_ptr[acpi_s4_pkg[0] + 1] = ssdt[acpi_s4_pkg[0] + 3] = sys_states[4] & 127; + + // store pci io windows + *(u32*)&ssdt_ptr[acpi_pci32_start[0]] = pcimem_start; + *(u32*)&ssdt_ptr[acpi_pci32_end[0]] = pcimem_end - 1; + if (pcimem64_start) { + ssdt_ptr[acpi_pci64_valid[0]] = 1; + *(u64*)&ssdt_ptr[acpi_pci64_start[0]] = pcimem64_start; + *(u64*)&ssdt_ptr[acpi_pci64_end[0]] = pcimem64_end - 1; + *(u64*)&ssdt_ptr[acpi_pci64_length[0]] = pcimem64_end - pcimem64_start; + } else { + ssdt_ptr[acpi_pci64_valid[0]] = 0; + } + ssdt_ptr += sizeof(ssdp_misc_aml); // build Scope(_SB_) header @@ -562,31 +574,6 @@ build_ssdt(void) for (i=0; ip0s = pcimem_start; - bfld->p0e = pcimem_end - 1; - bfld->p0l = pcimem_end - pcimem_start; - bfld->p1s = pcimem64_start; - bfld->p1e = pcimem64_end - 1; - bfld->p1l = pcimem64_end - pcimem64_start; - - // build "OperationRegion(BDAT, SystemMemory, 0x12345678, 0x87654321)" - *(ssdt_ptr++) = 0x5B; // ExtOpPrefix - *(ssdt_ptr++) = 0x80; // OpRegionOp - *(ssdt_ptr++) = 'B'; - *(ssdt_ptr++) = 'D'; - *(ssdt_ptr++) = 'A'; - *(ssdt_ptr++) = 'T'; - *(ssdt_ptr++) = 0x00; // SystemMemory - *(ssdt_ptr++) = 0x0C; // DWordPrefix - *(u32*)ssdt_ptr = (u32)bfld; - ssdt_ptr += 4; - *(ssdt_ptr++) = 0x0C; // DWordPrefix - *(u32*)ssdt_ptr = sizeof(struct bfld); - ssdt_ptr += 4; - // build Scope(PCI0) opcode *(ssdt_ptr++) = 0x10; // ScopeOp ssdt_ptr = encodeLen(ssdt_ptr, length - (ssdt_ptr - ssdt), 3); diff --git a/src/acpi.h b/src/acpi.h index 6289953..7fbd082 100644 --- a/src/acpi.h +++ b/src/acpi.h @@ -113,15 +113,6 @@ struct fadt_descriptor_rev1 #endif } PACKED; -struct bfld { - u64 p0s; /* pci window 0 (below 4g) - start */ - u64 p0e; /* pci window 0 (below 4g) - end */ - u64 p0l; /* pci window 0 (below 4g) - length */ - u64 p1s; /* pci window 1 (above 4g) - start */ - u64 p1e; /* pci window 1 (above 4g) - end */ - u64 p1l; /* pci window 1 (above 4g) - length */ -} PACKED; - /* PCI fw r3.0 MCFG table. */ /* Subtable */ struct acpi_mcfg_allocation { diff --git a/src/ssdt-misc.dsl b/src/ssdt-misc.dsl index f0a8df3..679422b 100644 --- a/src/ssdt-misc.dsl +++ b/src/ssdt-misc.dsl @@ -4,6 +4,26 @@ DefinitionBlock ("ssdt-misc.aml", "SSDT", 0x01, "BXPC", "BXSSDTSUSP", 0x1) { /**************************************************************** + * PCI memory ranges + ****************************************************************/ + + Scope(\) { + ACPI_EXTRACT_NAME_DWORD_CONST acpi_pci32_start + Name(P0S, 0x12345678) + ACPI_EXTRACT_NAME_DWORD_CONST acpi_pci32_end + Name(P0E, 0x12345678) + ACPI_EXTRACT_NAME_BYTE_CONST acpi_pci64_valid + Name(P1V, 0x12) + ACPI_EXTRACT_NAME_BUFFER8 acpi_pci64_start + Name(P1S, Buffer() { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }) + ACPI_EXTRACT_NAME_BUFFER8 acpi_pci64_end + Name(P1E, Buffer() { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }) + ACPI_EXTRACT_NAME_BUFFER8 acpi_pci64_length + Name(P1L, Buffer() { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }) + } + + +/**************************************************************** * Suspend ****************************************************************/ diff --git a/tools/acpi_extract.py b/tools/acpi_extract.py index dd3ccfd..ab8ced6 100755 --- a/tools/acpi_extract.py +++ b/tools/acpi_extract.py @@ -128,6 +128,15 @@ def aml_name_string(offset): offset += 1 return offset; +# Given data offset, find 8 byte buffer offset +def aml_data_buffer8(offset): + #0x08 NameOp NameString DataRef + expect = [0x11, 0x0B, 0x0A, 0x08] + if (aml[offset:offset+4] != expect): + die( "Name offset 0x%x: expected %s actual %s" % + (offset, aml[offset:offset+4], expect)) + return offset + len(expect) + # Given data offset, find dword const offset def aml_data_dword_const(offset): #0x08 NameOp NameString DataRef @@ -152,6 +161,10 @@ def aml_data_byte_const(offset): (offset, aml[offset])); return offset + 1; +# Find name'd buffer8 +def aml_name_buffer8(offset): + return aml_data_buffer8(aml_name_string(offset) + 4) + # Given name offset, find dword const offset def aml_name_dword_const(offset): return aml_data_dword_const(aml_name_string(offset) + 4) @@ -283,7 +296,9 @@ for i in range(len(asl)): die("%s directive used more than once" % directive) output[array] = aml continue - if (directive == "ACPI_EXTRACT_NAME_DWORD_CONST"): + if (directive == "ACPI_EXTRACT_NAME_BUFFER8"): + offset = aml_name_buffer8(offset) + elif (directive == "ACPI_EXTRACT_NAME_DWORD_CONST"): offset = aml_name_dword_const(offset) elif (directive == "ACPI_EXTRACT_NAME_WORD_CONST"): offset = aml_name_word_const(offset) -- cgit v1.1