From patchwork Wed Jul 1 14:50:30 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiao Guangrong X-Patchwork-Id: 490214 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 1D5FF1402A0 for ; Thu, 2 Jul 2015 01:08:36 +1000 (AEST) Received: from localhost ([::1]:59519 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZAJco-0002jC-4m for incoming@patchwork.ozlabs.org; Wed, 01 Jul 2015 11:08:34 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:51805) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZAJQY-0006G7-GA for qemu-devel@nongnu.org; Wed, 01 Jul 2015 10:55:55 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZAJQU-0004oS-Ot for qemu-devel@nongnu.org; Wed, 01 Jul 2015 10:55:54 -0400 Received: from mga11.intel.com ([192.55.52.93]:65470) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZAJQU-0004RQ-Gr for qemu-devel@nongnu.org; Wed, 01 Jul 2015 10:55:50 -0400 Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga102.fm.intel.com with ESMTP; 01 Jul 2015 07:55:50 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.15,386,1432623600"; d="scan'208";a="517239490" Received: from xiao.sh.intel.com ([10.239.159.86]) by FMSMGA003.fm.intel.com with ESMTP; 01 Jul 2015 07:55:47 -0700 From: Xiao Guangrong To: pbonzini@redhat.com, imammedo@redhat.com Date: Wed, 1 Jul 2015 22:50:30 +0800 Message-Id: <1435762232-15543-15-git-send-email-guangrong.xiao@linux.intel.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1435762232-15543-1-git-send-email-guangrong.xiao@linux.intel.com> References: <1435762232-15543-1-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: 192.55.52.93 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 14/16] 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/pc-nvdimm.c | 87 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 87 insertions(+) diff --git a/hw/mem/pc-nvdimm.c b/hw/mem/pc-nvdimm.c index b586bf7..7e5446c 100644 --- a/hw/mem/pc-nvdimm.c +++ b/hw/mem/pc-nvdimm.c @@ -127,6 +127,20 @@ static uint32_t nvdimm_index_to_handle(int index) return index + 1; } +static PCNVDIMMDevice +*get_nvdimm_device_by_handle(GSList *list, uint32_t handle) +{ + for (; list; list = list->next) { + PCNVDIMMDevice *nvdimm = list->data; + + if (nvdimm_index_to_handle(nvdimm->device_index) == handle) { + return nvdimm; + } + } + + return NULL; +} + typedef struct { uint8_t b[16]; } uuid_le; @@ -391,6 +405,17 @@ enum { | (1 << NFIT_CMD_GET_CONFIG_DATA) \ | (1 << NFIT_CMD_SET_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; @@ -398,6 +423,7 @@ 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)]; }; @@ -412,10 +438,23 @@ 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]; }; }; @@ -441,6 +480,51 @@ 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(struct dsm_buffer *in, struct dsm_out *out) +{ + GSList *list = get_nvdimm_built_list(); + PCNVDIMMDevice *nvdimm = get_nvdimm_device_by_handle(list, in->handle); + uint32_t status = NFIT_STATUS_NON_EXISTING_MEM_DEV; + + if (!nvdimm) { + goto exit; + } + + status = NFIT_STATUS_SUCCESS; + out->cmd_config_size.config_size = nvdimm->config_data_size; + out->cmd_config_size.max_xfer = max_xfer_config_size(); + nvdebug("%s config_size %#x, max_xfer %#x.\n", __func__, + out->cmd_config_size.config_size, out->cmd_config_size.max_xfer); +exit: + g_slist_free(list); + return status; +} + static void dsm_write_nvdimm(struct dsm_buffer *in, struct dsm_out *out) { uint32_t function = in->arg2; @@ -450,6 +534,9 @@ static void dsm_write_nvdimm(struct dsm_buffer *in, struct dsm_out *out) case NFIT_CMD_IMPLEMENTED: out->cmd_implemented.cmd_list = DIMM_SUPPORT_CMD; return; + case NFIT_CMD_GET_CONFIG_SIZE: + status = dsm_cmd_config_size(in, out); + break; default: status = NFIT_STATUS_NOT_SUPPORTED; };