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Date: Wed, 20 Apr 2022 17:31:43 +0200
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: Besar Wicaksono <bwicaksono@...dia.com>
Cc: "Rafael J. Wysocki" <rafael@...nel.org>,
Len Brown <lenb@...nel.org>,
Robert Moore <robert.moore@...el.com>,
Catalin Marinas <catalin.marinas@....com>,
Will Deacon <will@...nel.org>,
Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
Hanjun Guo <guohanjun@...wei.com>,
Sudeep Holla <sudeep.holla@....com>,
linux-tegra <linux-tegra@...r.kernel.org>,
Thierry Reding <treding@...dia.com>,
Jon Hunter <jonathanh@...dia.com>,
ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
"open list:ACPI COMPONENT ARCHITECTURE (ACPICA)" <devel@...ica.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Linux ARM <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 1/2] ACPICA: Add support for ARM Performance Monitoring
Unit Table.
On Tue, Apr 19, 2022 at 10:55 PM Besar Wicaksono <bwicaksono@...dia.com> wrote:
>
> ACPICA commit 002165ecc0a3dc703bb24c789aaa02fdada01675
>
> The specification of this table is described in
> "ARM Performance Monitoring Unit Architecture 1.0 Platform Design Document"
> ARM DEN0117.
>
> This patch adds the necessary types and support for
> compiling/disassembling APMT.
>
> Link: https://github.com/acpica/acpica/commit/002165ec
> Signed-off-by: Besar Wicaksono <bwicaksono@...dia.com>
It should be equivalent to this patch:
https://patchwork.kernel.org/project/linux-acpi/patch/3370028.QJadu78ljV@kreacher/
present in linux-next.
If the other patch in the series is ACKed by the ARM64 ACPi people, I
can take it too.
Thanks!
> ---
> include/acpi/actbl2.h | 81 +++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 81 insertions(+)
>
> diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h
> index 16847c8d9d5f..8fc5cf318c15 100644
> --- a/include/acpi/actbl2.h
> +++ b/include/acpi/actbl2.h
> @@ -25,6 +25,7 @@
> * the wrong signature.
> */
> #define ACPI_SIG_AGDI "AGDI" /* Arm Generic Diagnostic Dump and Reset Device Interface */
> +#define ACPI_SIG_APMT "APMT" /* Arm Performance Monitoring Unit table */
> #define ACPI_SIG_BDAT "BDAT" /* BIOS Data ACPI Table */
> #define ACPI_SIG_IORT "IORT" /* IO Remapping Table */
> #define ACPI_SIG_IVRS "IVRS" /* I/O Virtualization Reporting Structure */
> @@ -258,6 +259,86 @@ struct acpi_table_agdi {
>
> #define ACPI_AGDI_SIGNALING_MODE (1)
>
> +/*******************************************************************************
> + *
> + * APMT - ARM Performance Monitoring Unit Table
> + *
> + * Conforms to:
> + * ARM Performance Monitoring Unit Architecture 1.0 Platform Design Document
> + * ARM DEN0117 v1.0 November 25, 2021
> + *
> + ******************************************************************************/
> +
> +struct acpi_table_apmt {
> + struct acpi_table_header header; /* Common ACPI table header */
> +};
> +
> +#define ACPI_APMT_NODE_ID_LENGTH 4
> +
> +/*
> + * APMT subtables
> + */
> +struct acpi_apmt_node {
> + u16 length;
> + u8 flags;
> + u8 type;
> + u32 id;
> + u64 inst_primary;
> + u32 inst_secondary;
> + u64 base_address0;
> + u64 base_address1;
> + u32 ovflw_irq;
> + u32 reserved;
> + u32 ovflw_irq_flags;
> + u32 proc_affinity;
> + u32 impl_id;
> +};
> +
> +/* Masks for Flags field above */
> +
> +#define ACPI_APMT_FLAGS_DUAL_PAGE (1<<0)
> +#define ACPI_APMT_FLAGS_AFFINITY (1<<1)
> +#define ACPI_APMT_FLAGS_ATOMIC (1<<2)
> +
> +/* Values for Flags dual page field above */
> +
> +#define ACPI_APMT_FLAGS_DUAL_PAGE_NSUPP (0<<0)
> +#define ACPI_APMT_FLAGS_DUAL_PAGE_SUPP (1<<0)
> +
> +/* Values for Flags processor affinity field above */
> +#define ACPI_APMT_FLAGS_AFFINITY_PROC (0<<1)
> +#define ACPI_APMT_FLAGS_AFFINITY_PROC_CONTAINER (1<<1)
> +
> +/* Values for Flags 64-bit atomic field above */
> +#define ACPI_APMT_FLAGS_ATOMIC_NSUPP (0<<2)
> +#define ACPI_APMT_FLAGS_ATOMIC_SUPP (1<<2)
> +
> +/* Values for Type field above */
> +
> +enum acpi_apmt_node_type {
> + ACPI_APMT_NODE_TYPE_MC = 0x00,
> + ACPI_APMT_NODE_TYPE_SMMU = 0x01,
> + ACPI_APMT_NODE_TYPE_PCIE_ROOT = 0x02,
> + ACPI_APMT_NODE_TYPE_ACPI = 0x03,
> + ACPI_APMT_NODE_TYPE_CACHE = 0x04,
> + ACPI_APMT_NODE_TYPE_COUNT
> +};
> +
> +/* Masks for ovflw_irq_flags field above */
> +
> +#define ACPI_APMT_OVFLW_IRQ_FLAGS_MODE (1<<0)
> +#define ACPI_APMT_OVFLW_IRQ_FLAGS_TYPE (1<<1)
> +
> +/* Values for ovflw_irq_flags mode field above */
> +
> +#define ACPI_APMT_OVFLW_IRQ_FLAGS_MODE_LEVEL (0<<0)
> +#define ACPI_APMT_OVFLW_IRQ_FLAGS_MODE_EDGE (1<<0)
> +
> +/* Values for ovflw_irq_flags type field above */
> +
> +#define ACPI_APMT_OVFLW_IRQ_FLAGS_TYPE_WIRED (0<<1)
> +
> +
> /*******************************************************************************
> *
> * BDAT - BIOS Data ACPI Table
> --
> 2.17.1
>
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