From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 82DB5217F47 for ; Wed, 4 Dec 2024 15:58:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733327909; cv=none; b=edWhY7utWuBPCx9KG1V/ydIj3yTkyNNV3+BNHwIrcaKKD+V7kI+tKWXnuso9dWSejMfiKQ+yRk0g/tzuKz2Z7/ZsXnePfjgcp8C+ykJjkvFe9dTeTz/QSPf6fwT8FOWRczNVdFlcjWOgpCYJvVEl6nltMGRSt8xTZacx/KhUGkE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733327909; c=relaxed/simple; bh=zBOGmzobFvp2lIQ7+789CjkQz81YRefZttUO1zNdg+E=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ZG0V2BJlNIH1lS8xBYZVt6MTnzbID0o2sEZvxG6mDenFL0NgjD3ATOjios+hLvEAW280IWGDqb0VPeiqeTUV9zPvcO/aO2/MBDTCgCuwzhBCn+LqrvEVS3foWyzK8nxBk844j823CuXjrsijvF0h8MZ4/xVYEcKQJPL5EJQJpQo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ZQ7s23vs; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ZQ7s23vs" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C5194C4CED1; Wed, 4 Dec 2024 15:58:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1733327909; bh=zBOGmzobFvp2lIQ7+789CjkQz81YRefZttUO1zNdg+E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZQ7s23vsCq4qd0zJln0Od3NDXrLifQWEp2NX3up0vvOpi/7Pg4Z1RP7WaLmpLhMkC bAUL9RpYBDEI3531Mr/j9J8ntvxmrjMA4ogz75cnO5wdgcPh9XyltmfxvVgIC7s1XD zxdyVPx6n3LUHojApHZYS5cUmocaqyEnzdDXEmkEkAqkuWfgLFDK/Zt57ZGD4HZf+M ea1NmaHYrjOEiBFm8mSL4E1WPIOGrf9M+DpZL8Y+ErxeIGY8fNPGHtF01siKgkxUsK eUTEprrUUm4OzSqpAYr9THu/v9DOV8Oe0gshygj3JkqURhjW9St3LmuNFHpQqF13yQ +irUjZynfLykg== Received: from mchehab by mail.kernel.org with local (Exim 4.98) (envelope-from ) id 1tIrlf-00000000HYs-3IUo; Wed, 04 Dec 2024 16:58:23 +0100 From: Mauro Carvalho Chehab To: Igor Mammedov Cc: Mauro Carvalho Chehab , "Michael S. Tsirkin" , Ani Sinha , Dongjiu Geng , Peter Maydell , Shannon Zhao , linux-kernel@vger.kernel.org, qemu-arm@nongnu.org, qemu-devel@nongnu.org, Jonathan Cameron Subject: [PATCH v3 1/5] acpi/ghes: Prepare to support multiple sources on ghes Date: Wed, 4 Dec 2024 16:57:55 +0100 Message-ID: X-Mailer: git-send-email 2.47.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: Mauro Carvalho Chehab The current code is actually dependent on having just one error structure with a single source. As the number of sources should be arch-dependent, as it will depend on what kind of synchronous/assynchronous notifications will exist, change the logic to dynamically build the table. Yet, for a proper support, we need to get the number of sources by reading the number from the HEST table. However, bios currently doesn't store a pointer to it. For now just change the logic at table build time, while enforcing that it will behave like before with a single source ID. A future patch will add a HEST table bios pointer and change the logic at acpi_ghes_record_errors() to dynamically use the new size. Signed-off-by: Mauro Carvalho Chehab Reviewed-by: Jonathan Cameron --- hw/acpi/ghes.c | 43 ++++++++++++++++++++++++++-------------- hw/arm/virt-acpi-build.c | 5 +++++ include/hw/acpi/ghes.h | 21 +++++++++++++------- 3 files changed, 47 insertions(+), 22 deletions(-) diff --git a/hw/acpi/ghes.c b/hw/acpi/ghes.c index 5efa50413af3..b77e5c9d1b19 100644 --- a/hw/acpi/ghes.c +++ b/hw/acpi/ghes.c @@ -206,17 +206,26 @@ ghes_gen_err_data_uncorrectable_recoverable(GArray *block, * Initialize "etc/hardware_errors" and "etc/hardware_errors_addr" fw_cfg blobs. * See docs/specs/acpi_hest_ghes.rst for blobs format. */ -static void build_ghes_error_table(GArray *hardware_errors, BIOSLinker *linker) +static void build_ghes_error_table(GArray *hardware_errors, BIOSLinker *linker, + int num_sources) { int i, error_status_block_offset; + /* + * TODO: Current version supports only one source. + * A further patch will drop this check, after adding a proper migration + * code, as, for the code to work, we need to store a bios pointer to the + * HEST table. + */ + assert(num_sources == 1); + /* Build error_block_address */ - for (i = 0; i < ACPI_GHES_ERROR_SOURCE_COUNT; i++) { + for (i = 0; i < num_sources; i++) { build_append_int_noprefix(hardware_errors, 0, sizeof(uint64_t)); } /* Build read_ack_register */ - for (i = 0; i < ACPI_GHES_ERROR_SOURCE_COUNT; i++) { + for (i = 0; i < num_sources; i++) { /* * Initialize the value of read_ack_register to 1, so GHES can be * writable after (re)boot. @@ -231,13 +240,13 @@ static void build_ghes_error_table(GArray *hardware_errors, BIOSLinker *linker) /* Reserve space for Error Status Data Block */ acpi_data_push(hardware_errors, - ACPI_GHES_MAX_RAW_DATA_LENGTH * ACPI_GHES_ERROR_SOURCE_COUNT); + ACPI_GHES_MAX_RAW_DATA_LENGTH * num_sources); /* Tell guest firmware to place hardware_errors blob into RAM */ bios_linker_loader_alloc(linker, ACPI_HW_ERROR_FW_CFG_FILE, hardware_errors, sizeof(uint64_t), false); - for (i = 0; i < ACPI_GHES_ERROR_SOURCE_COUNT; i++) { + for (i = 0; i < num_sources; i++) { /* * Tell firmware to patch error_block_address entries to point to * corresponding "Generic Error Status Block" @@ -263,10 +272,12 @@ static void build_ghes_error_table(GArray *hardware_errors, BIOSLinker *linker) /* Build Generic Hardware Error Source version 2 (GHESv2) */ static void build_ghes_v2(GArray *table_data, BIOSLinker *linker, - enum AcpiGhesNotifyType notify, - uint16_t source_id) + const AcpiNotificationSourceId *notif_src, + uint16_t index, int num_sources) { uint64_t address_offset; + const uint16_t notify = notif_src->notify; + const uint16_t source_id = notif_src->source_id; /* * Type: @@ -297,7 +308,7 @@ static void build_ghes_v2(GArray *table_data, address_offset + GAS_ADDR_OFFSET, sizeof(uint64_t), ACPI_HW_ERROR_FW_CFG_FILE, - source_id * sizeof(uint64_t)); + index * sizeof(uint64_t)); /* Notification Structure */ build_ghes_hw_error_notification(table_data, notify); @@ -317,8 +328,7 @@ static void build_ghes_v2(GArray *table_data, address_offset + GAS_ADDR_OFFSET, sizeof(uint64_t), ACPI_HW_ERROR_FW_CFG_FILE, - (ACPI_GHES_ERROR_SOURCE_COUNT + source_id) - * sizeof(uint64_t)); + (num_sources + index) * sizeof(uint64_t)); /* * Read Ack Preserve field @@ -333,19 +343,23 @@ static void build_ghes_v2(GArray *table_data, /* Build Hardware Error Source Table */ void acpi_build_hest(GArray *table_data, GArray *hardware_errors, BIOSLinker *linker, + const AcpiNotificationSourceId * const notif_source, + int num_sources, const char *oem_id, const char *oem_table_id) { AcpiTable table = { .sig = "HEST", .rev = 1, .oem_id = oem_id, .oem_table_id = oem_table_id }; + int i; - build_ghes_error_table(hardware_errors, linker); + build_ghes_error_table(hardware_errors, linker, num_sources); acpi_table_begin(&table, table_data); /* Error Source Count */ - build_append_int_noprefix(table_data, ACPI_GHES_ERROR_SOURCE_COUNT, 4); - build_ghes_v2(table_data, linker, - ACPI_GHES_NOTIFY_SEA, ACPI_HEST_SRC_ID_SEA); + build_append_int_noprefix(table_data, num_sources, 4); + for (i = 0; i < num_sources; i++) { + build_ghes_v2(table_data, linker, ¬if_source[i], i, num_sources); + } acpi_table_end(linker, &table); } @@ -410,7 +424,6 @@ void ghes_record_cper_errors(const void *cper, size_t len, } ags = &acpi_ged_state->ghes_state; - assert(ACPI_GHES_ERROR_SOURCE_COUNT == 1); get_hw_error_offsets(le64_to_cpu(ags->hw_error_le), &cper_addr, &read_ack_register_addr); diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c index e059317b002e..bd5582bc75f8 100644 --- a/hw/arm/virt-acpi-build.c +++ b/hw/arm/virt-acpi-build.c @@ -889,6 +889,10 @@ static void acpi_align_size(GArray *blob, unsigned align) g_array_set_size(blob, ROUND_UP(acpi_data_len(blob), align)); } +static const AcpiNotificationSourceId hest_ghes_notify[] = { + { ACPI_HEST_SRC_ID_SYNC, ACPI_GHES_NOTIFY_SEA }, +}; + static void virt_acpi_build(VirtMachineState *vms, AcpiBuildTables *tables) { @@ -944,6 +948,7 @@ void virt_acpi_build(VirtMachineState *vms, AcpiBuildTables *tables) if (vms->ras) { acpi_add_table(table_offsets, tables_blob); acpi_build_hest(tables_blob, tables->hardware_errors, tables->linker, + hest_ghes_notify, ARRAY_SIZE(hest_ghes_notify), vms->oem_id, vms->oem_table_id); } diff --git a/include/hw/acpi/ghes.h b/include/hw/acpi/ghes.h index 39619a2457cb..9f0120d0d596 100644 --- a/include/hw/acpi/ghes.h +++ b/include/hw/acpi/ghes.h @@ -57,20 +57,27 @@ enum AcpiGhesNotifyType { ACPI_GHES_NOTIFY_RESERVED = 12 }; -enum { - ACPI_HEST_SRC_ID_SEA = 0, - /* future ids go here */ - - ACPI_GHES_ERROR_SOURCE_COUNT -}; - typedef struct AcpiGhesState { uint64_t hw_error_le; bool present; /* True if GHES is present at all on this board */ } AcpiGhesState; +/* + * ID numbers used to fill HEST source ID field + */ +enum AcpiGhesSourceID { + ACPI_HEST_SRC_ID_SYNC, +}; + +typedef struct AcpiNotificationSourceId { + enum AcpiGhesSourceID source_id; + enum AcpiGhesNotifyType notify; +} AcpiNotificationSourceId; + void acpi_build_hest(GArray *table_data, GArray *hardware_errors, BIOSLinker *linker, + const AcpiNotificationSourceId * const notif_source, + int num_sources, const char *oem_id, const char *oem_table_id); void acpi_ghes_add_fw_cfg(AcpiGhesState *vms, FWCfgState *s, GArray *hardware_errors); -- 2.47.1