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acpi: Move MCFG implementation to common lib

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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>
Reviewed-by: Simon Glass <sjg@chromium.org>
Use sizeof(*mcfg) instead of sizeof(*header)
Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Moritz Fischer 2022-02-05 12:17:45 -08:00 committed by Simon Glass
parent ab2ffe7359
commit 058fb9f5ff
6 changed files with 83 additions and 67 deletions
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13
arch/x86/cpu/intel_common/acpi.c
View file

@ -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,
size = acpi_create_mcfg_mmconfig((void *)ctx->current,
CONFIG_MMCONF_BASE_ADDRESS, 0, 0,
(CONFIG_SA_PCIEX_LENGTH >> 20)
- 1);
return current;
(CONFIG_SA_PCIEX_LENGTH >> 20) - 1);
acpi_inc(ctx, size);
return 0;
}
static int acpi_sci_irq(void)

15
arch/x86/cpu/tangier/acpi.c
View file

@ -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)
{
/* TODO: Derive parameters from SFI MCFG table */
current += acpi_create_mcfg_mmconfig
((struct acpi_mcfg_mmconfig *)current,
MCFG_BASE_ADDRESS, 0x0, 0x0, 0x0);
size_t size;
return current;
/* TODO: Derive parameters from SFI MCFG table */
size = acpi_create_mcfg_mmconfig
((struct acpi_mcfg_mmconfig *)ctx->current,
MCFG_BASE_ADDRESS, 0x0, 0x0, 0x0);
acpi_inc(ctx, size);
return 0;
}
static u32 acpi_fill_csrt_dma(struct acpi_csrt_group *grp)

1
arch/x86/include/asm/acpi_table.h
View file

@ -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

54
arch/x86/lib/acpi_table.c
View file

@ -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
*

1
lib/acpi/Makefile
View file

@ -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

64
lib/acpi/mcfg.c Normal file
View file

@ -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(*mcfg));
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);