MCFG tables are used on multiple arches. Move to common ACPI lib.
Cc: Simon Glass sjg@chromium.org Signed-off-by: Moritz Fischer moritzf@google.com ---
arch/x86/cpu/intel_common/acpi.c | 15 +++++--- arch/x86/cpu/tangier/acpi.c | 11 ++++-- arch/x86/include/asm/acpi_table.h | 1 - arch/x86/lib/acpi_table.c | 54 -------------------------- lib/acpi/Makefile | 1 + lib/acpi/mcfg.c | 64 +++++++++++++++++++++++++++++++ 6 files changed, 81 insertions(+), 65 deletions(-) create mode 100644 lib/acpi/mcfg.c
diff --git a/arch/x86/cpu/intel_common/acpi.c b/arch/x86/cpu/intel_common/acpi.c index 15f19da206..d94ec208f6 100644 --- a/arch/x86/cpu/intel_common/acpi.c +++ b/arch/x86/cpu/intel_common/acpi.c @@ -31,14 +31,17 @@ #include <linux/err.h> #include <power/acpi_pmc.h>
-u32 acpi_fill_mcfg(u32 current) +int acpi_fill_mcfg(struct acpi_ctx *ctx) { + size_t size; + /* PCI Segment Group 0, Start Bus Number 0, End Bus Number is 255 */ - current += acpi_create_mcfg_mmconfig((void *)current, - CONFIG_MMCONF_BASE_ADDRESS, 0, 0, - (CONFIG_SA_PCIEX_LENGTH >> 20) - - 1); - return current; + size = acpi_create_mcfg_mmconfig((void *)ctx->current, + CONFIG_MMCONF_BASE_ADDRESS, 0, 0, + (CONFIG_SA_PCIEX_LENGTH >> 20) - 1); + acpi_inc(ctx, size); + + return 0; }
static int acpi_sci_irq(void) diff --git a/arch/x86/cpu/tangier/acpi.c b/arch/x86/cpu/tangier/acpi.c index 12f9289612..e3a2fcea76 100644 --- a/arch/x86/cpu/tangier/acpi.c +++ b/arch/x86/cpu/tangier/acpi.c @@ -68,14 +68,17 @@ u32 acpi_fill_madt(u32 current) return current; }
-u32 acpi_fill_mcfg(u32 current) +int acpi_fill_mcfg(struct acpi_ctx *ctx) { + size_t size; + /* TODO: Derive parameters from SFI MCFG table */ - current += acpi_create_mcfg_mmconfig - ((struct acpi_mcfg_mmconfig *)current, + size = acpi_create_mcfg_mmconfig + ((struct acpi_mcfg_mmconfig *)ctx->current, MCFG_BASE_ADDRESS, 0x0, 0x0, 0x0); + acpi_inc(ctx, size);
- return current; + return 0; }
static u32 acpi_fill_csrt_dma(struct acpi_csrt_group *grp) diff --git a/arch/x86/include/asm/acpi_table.h b/arch/x86/include/asm/acpi_table.h index 0d07f7cad8..39547de0d4 100644 --- a/arch/x86/include/asm/acpi_table.h +++ b/arch/x86/include/asm/acpi_table.h @@ -34,7 +34,6 @@ int acpi_create_madt_lapic_nmi(struct acpi_madt_lapic_nmi *lapic_nmi, u32 acpi_fill_madt(u32 current); int acpi_create_mcfg_mmconfig(struct acpi_mcfg_mmconfig *mmconfig, u32 base, u16 seg_nr, u8 start, u8 end); -u32 acpi_fill_mcfg(u32 current);
/** * acpi_write_hpet() - Write out a HPET table diff --git a/arch/x86/lib/acpi_table.c b/arch/x86/lib/acpi_table.c index 753bf39619..c5b33dc65d 100644 --- a/arch/x86/lib/acpi_table.c +++ b/arch/x86/lib/acpi_table.c @@ -161,28 +161,6 @@ int acpi_write_madt(struct acpi_ctx *ctx, const struct acpi_writer *entry) } ACPI_WRITER(5x86, NULL, acpi_write_madt, 0);
-int acpi_create_mcfg_mmconfig(struct acpi_mcfg_mmconfig *mmconfig, u32 base, - u16 seg_nr, u8 start, u8 end) -{ - memset(mmconfig, 0, sizeof(*mmconfig)); - mmconfig->base_address_l = base; - mmconfig->base_address_h = 0; - mmconfig->pci_segment_group_number = seg_nr; - mmconfig->start_bus_number = start; - mmconfig->end_bus_number = end; - - return sizeof(struct acpi_mcfg_mmconfig); -} - -__weak u32 acpi_fill_mcfg(u32 current) -{ - current += acpi_create_mcfg_mmconfig - ((struct acpi_mcfg_mmconfig *)current, - CONFIG_PCIE_ECAM_BASE, 0x0, 0x0, 255); - - return current; -} - /** * acpi_create_tcpa() - Create a TCPA table * @@ -480,38 +458,6 @@ int acpi_write_gnvs(struct acpi_ctx *ctx, const struct acpi_writer *entry) } ACPI_WRITER(4gnvs, "GNVS", acpi_write_gnvs, 0);
-/* MCFG is defined in the PCI Firmware Specification 3.0 */ -int acpi_write_mcfg(struct acpi_ctx *ctx, const struct acpi_writer *entry) -{ - struct acpi_table_header *header; - struct acpi_mcfg *mcfg; - u32 current; - - mcfg = ctx->current; - header = &mcfg->header; - - current = (u32)mcfg + sizeof(struct acpi_mcfg); - - memset(mcfg, '\0', sizeof(struct acpi_mcfg)); - - /* Fill out header fields */ - acpi_fill_header(header, "MCFG"); - header->length = sizeof(struct acpi_mcfg); - header->revision = 1; - - current = acpi_fill_mcfg(current); - - /* (Re)calculate length and checksum */ - header->length = current - (u32)mcfg; - header->checksum = table_compute_checksum(mcfg, header->length); - - acpi_inc(ctx, mcfg->header.length); - acpi_add_table(ctx, mcfg); - - return 0; -} -ACPI_WRITER(5mcfg, "MCFG", acpi_write_mcfg, 0); - /** * acpi_write_hpet() - Write out a HPET table * diff --git a/lib/acpi/Makefile b/lib/acpi/Makefile index f9b504988f..956b5a0d72 100644 --- a/lib/acpi/Makefile +++ b/lib/acpi/Makefile @@ -11,6 +11,7 @@ obj-y += acpi_writer.o ifndef CONFIG_QEMU obj-y += base.o obj-y += csrt.o +obj-y += mcfg.o
# Sandbox does not build a .asl file ifndef CONFIG_SANDBOX diff --git a/lib/acpi/mcfg.c b/lib/acpi/mcfg.c new file mode 100644 index 0000000000..2231e25124 --- /dev/null +++ b/lib/acpi/mcfg.c @@ -0,0 +1,64 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Write an ACPI MCFG table + * + * Copyright 2022 Google LLC + */ + +#define LOG_CATEGORY LOGC_ACPI + +#include <common.h> +#include <mapmem.h> +#include <tables_csum.h> +#include <acpi/acpi_table.h> +#include <dm/acpi.h> + +int acpi_create_mcfg_mmconfig(struct acpi_mcfg_mmconfig *mmconfig, u32 base, + u16 seg_nr, u8 start, u8 end) +{ + memset(mmconfig, 0, sizeof(*mmconfig)); + mmconfig->base_address_l = base; + mmconfig->base_address_h = 0; + mmconfig->pci_segment_group_number = seg_nr; + mmconfig->start_bus_number = start; + mmconfig->end_bus_number = end; + + return sizeof(struct acpi_mcfg_mmconfig); +} + +__weak int acpi_fill_mcfg(struct acpi_ctx *ctx) +{ + return -ENOENT; +} + +/* MCFG is defined in the PCI Firmware Specification 3.0 */ +int acpi_write_mcfg(struct acpi_ctx *ctx, const struct acpi_writer *entry) +{ + struct acpi_table_header *header; + struct acpi_mcfg *mcfg; + int ret; + + mcfg = ctx->current; + header = &mcfg->header; + + memset(mcfg, '\0', sizeof(struct acpi_mcfg)); + + /* Fill out header fields */ + acpi_fill_header(header, "MCFG"); + header->length = sizeof(struct acpi_mcfg); + header->revision = 1; + acpi_inc(ctx, sizeof(*header)); + + ret = acpi_fill_mcfg(ctx); + if (ret) + return log_msg_ret("fill", ret); + + /* (Re)calculate length and checksum */ + header->length = (ulong)ctx->current - (ulong)mcfg; + header->checksum = table_compute_checksum(mcfg, header->length); + + acpi_add_table(ctx, mcfg); + + return 0; +} +ACPI_WRITER(5mcfg, "MCFG", acpi_write_mcfg, 0);