From mboxrd@z Thu Jan 1 00:00:00 1970 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 From: Xiao Guangrong Date: Wed, 1 Jul 2015 22:50:30 +0800 Message-Id: <1435762232-15543-15-git-send-email-guangrong.xiao@linux.intel.com> 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> Subject: [Qemu-devel] [PATCH 14/16] nvdimm: support NFIT_CMD_GET_CONFIG_SIZE function List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: pbonzini@redhat.com, imammedo@redhat.com 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 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; }; -- 2.1.0