From patchwork Fri Aug 14 14:52:08 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiao Guangrong X-Patchwork-Id: 507451 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id BCF5B1401DE for ; Sat, 15 Aug 2015 01:11:36 +1000 (AEST) Received: from localhost ([::1]:46769 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZQGdq-0003Nb-Be for incoming@patchwork.ozlabs.org; Fri, 14 Aug 2015 11:11:34 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:51812) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZQGSC-0006TF-NC for qemu-devel@nongnu.org; Fri, 14 Aug 2015 10:59:33 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZQGS8-0005rC-1S for qemu-devel@nongnu.org; Fri, 14 Aug 2015 10:59:32 -0400 Received: from mga01.intel.com ([192.55.52.88]:47304) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZQGS7-0005qR-N5 for qemu-devel@nongnu.org; Fri, 14 Aug 2015 10:59:27 -0400 Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga101.fm.intel.com with ESMTP; 14 Aug 2015 07:59:02 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.15,678,1432623600"; d="scan'208";a="748633480" Received: from xiao.sh.intel.com ([10.239.159.86]) by orsmga001.jf.intel.com with ESMTP; 14 Aug 2015 07:58:39 -0700 From: Xiao Guangrong To: pbonzini@redhat.com, imammedo@redhat.com Date: Fri, 14 Aug 2015 22:52:08 +0800 Message-Id: <1439563931-12352-16-git-send-email-guangrong.xiao@linux.intel.com> X-Mailer: git-send-email 2.4.3 In-Reply-To: <1439563931-12352-1-git-send-email-guangrong.xiao@linux.intel.com> References: <1439563931-12352-1-git-send-email-guangrong.xiao@linux.intel.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 192.55.52.88 Cc: Xiao Guangrong , ehabkost@redhat.com, kvm@vger.kernel.org, mst@redhat.com, gleb@kernel.org, mtosatti@redhat.com, qemu-devel@nongnu.org, stefanha@redhat.com, rth@twiddle.net Subject: [Qemu-devel] [PATCH v2 15/18] nvdimm: support NFIT_CMD_GET_CONFIG_SIZE function X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Function 4 is used to get Namespace lable size Signed-off-by: Xiao Guangrong --- hw/mem/nvdimm/acpi.c | 70 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) diff --git a/hw/mem/nvdimm/acpi.c b/hw/mem/nvdimm/acpi.c index 20aefce..0a5f2c2 100644 --- a/hw/mem/nvdimm/acpi.c +++ b/hw/mem/nvdimm/acpi.c @@ -334,6 +334,17 @@ enum { | (1 << NFIT_CMD_GET_CONFIG_SIZE) \ | (1 << NFIT_CMD_GET_CONFIG_DATA)) +struct cmd_in_get_config_data { + uint32_t offset; + uint32_t length; +} QEMU_PACKED; + +struct cmd_in_set_config_data { + uint32_t offset; + uint32_t length; + uint8_t in_buf[0]; +} QEMU_PACKED; + struct dsm_buffer { /* RAM page. */ uint32_t handle; @@ -341,6 +352,7 @@ struct dsm_buffer { uint32_t arg1; uint32_t arg2; union { + struct cmd_in_set_config_data cmd_config_set; char arg3[PAGE_SIZE - 3 * sizeof(uint32_t) - 16 * sizeof(uint8_t)]; }; @@ -358,10 +370,23 @@ struct cmd_out_implemented { uint64_t cmd_list; }; +struct cmd_out_get_config_size { + uint32_t status; + uint32_t config_size; + uint32_t max_xfer; +} QEMU_PACKED; + +struct cmd_out_get_config_data { + uint32_t status; + uint8_t out_buf[0]; +} QEMU_PACKED; + struct dsm_out { union { uint32_t status; struct cmd_out_implemented cmd_implemented; + struct cmd_out_get_config_size cmd_config_size; + struct cmd_out_get_config_data cmd_config_get; uint8_t data[PAGE_SIZE]; }; }; @@ -387,6 +412,48 @@ static void dsm_write_root(struct dsm_buffer *in, struct dsm_out *out) nvdebug("Return status %#x.\n", out->status); } +/* + * the max transfer size is the max size transfered by both a + * NFIT_CMD_GET_CONFIG_DATA and a NFIT_CMD_SET_CONFIG_DATA + * command. + */ +static uint32_t max_xfer_config_size(void) +{ + struct dsm_buffer *in; + struct dsm_out *out; + uint32_t max_get_size, max_set_size; + + /* + * the max data ACPI can read one time which is transfered by + * the response of NFIT_CMD_GET_CONFIG_DATA. + */ + max_get_size = sizeof(out->data) - sizeof(out->cmd_config_get); + + /* + * the max data ACPI can write one time which is transfered by + * NFIT_CMD_SET_CONFIG_DATA + */ + max_set_size = sizeof(in->arg3) - sizeof(in->cmd_config_set); + return MIN(max_get_size, max_set_size); +} + +static uint32_t +dsm_cmd_config_size(PCNVDIMMDevice *nvdimm, struct dsm_buffer *in, + struct dsm_out *out) +{ + uint32_t config_size, mxfer; + + config_size = nvdimm->config_data_size; + mxfer = max_xfer_config_size(); + + out->cmd_config_size.config_size = cpu_to_le32(config_size); + out->cmd_config_size.max_xfer = cpu_to_le32(mxfer); + nvdebug("%s config_size %#x, max_xfer %#x.\n", __func__, config_size, + mxfer); + + return NFIT_STATUS_SUCCESS; +} + static void dsm_write_nvdimm(struct dsm_buffer *in, struct dsm_out *out) { GSList *list = get_nvdimm_built_list(); @@ -408,6 +475,9 @@ static void dsm_write_nvdimm(struct dsm_buffer *in, struct dsm_out *out) out->cmd_implemented.cmd_list = cpu_to_le64(cmd_list); goto free; + case NFIT_CMD_GET_CONFIG_SIZE: + status = dsm_cmd_config_size(nvdimm, in, out); + break; default: status = NFIT_STATUS_NOT_SUPPORTED; };