nvdimm acpi: support Get Namespace Label Data function
Function 5 is used to get Namespace Label Data Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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@ -440,6 +440,14 @@ struct NvdimmFuncGetLabelSizeOut {
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typedef struct NvdimmFuncGetLabelSizeOut NvdimmFuncGetLabelSizeOut;
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typedef struct NvdimmFuncGetLabelSizeOut NvdimmFuncGetLabelSizeOut;
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QEMU_BUILD_BUG_ON(sizeof(NvdimmFuncGetLabelSizeOut) > 4096);
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QEMU_BUILD_BUG_ON(sizeof(NvdimmFuncGetLabelSizeOut) > 4096);
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struct NvdimmFuncGetLabelDataIn {
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uint32_t offset; /* the offset in the namespace label data area. */
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uint32_t length; /* the size of data is to be read via the function. */
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} QEMU_PACKED;
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typedef struct NvdimmFuncGetLabelDataIn NvdimmFuncGetLabelDataIn;
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QEMU_BUILD_BUG_ON(sizeof(NvdimmFuncGetLabelDataIn) +
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offsetof(NvdimmDsmIn, arg3) > 4096);
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struct NvdimmFuncGetLabelDataOut {
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struct NvdimmFuncGetLabelDataOut {
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/* the size of buffer filled by QEMU. */
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/* the size of buffer filled by QEMU. */
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uint32_t len;
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uint32_t len;
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@ -447,6 +455,7 @@ struct NvdimmFuncGetLabelDataOut {
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uint8_t out_buf[0]; /* the data got via Get Namesapce Label function. */
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uint8_t out_buf[0]; /* the data got via Get Namesapce Label function. */
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} QEMU_PACKED;
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} QEMU_PACKED;
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typedef struct NvdimmFuncGetLabelDataOut NvdimmFuncGetLabelDataOut;
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typedef struct NvdimmFuncGetLabelDataOut NvdimmFuncGetLabelDataOut;
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QEMU_BUILD_BUG_ON(sizeof(NvdimmFuncGetLabelDataOut) > 4096);
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struct NvdimmFuncSetLabelDataIn {
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struct NvdimmFuncSetLabelDataIn {
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uint32_t offset; /* the offset in the namespace label data area. */
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uint32_t offset; /* the offset in the namespace label data area. */
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@ -542,6 +551,71 @@ static void nvdimm_dsm_label_size(NVDIMMDevice *nvdimm, hwaddr dsm_mem_addr)
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sizeof(label_size_out));
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sizeof(label_size_out));
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}
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}
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static uint32_t nvdimm_rw_label_data_check(NVDIMMDevice *nvdimm,
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uint32_t offset, uint32_t length)
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{
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uint32_t ret = 3 /* Invalid Input Parameters */;
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if (offset + length < offset) {
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nvdimm_debug("offset %#x + length %#x is overflow.\n", offset,
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length);
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return ret;
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}
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if (nvdimm->label_size < offset + length) {
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nvdimm_debug("position %#x is beyond label data (len = %" PRIx64 ").\n",
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offset + length, nvdimm->label_size);
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return ret;
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}
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if (length > nvdimm_get_max_xfer_label_size()) {
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nvdimm_debug("length (%#x) is larger than max_xfer (%#x).\n",
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length, nvdimm_get_max_xfer_label_size());
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return ret;
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}
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return 0 /* Success */;
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}
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/*
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* DSM Spec Rev1 4.5 Get Namespace Label Data (Function Index 5).
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*/
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static void nvdimm_dsm_get_label_data(NVDIMMDevice *nvdimm, NvdimmDsmIn *in,
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hwaddr dsm_mem_addr)
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{
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NVDIMMClass *nvc = NVDIMM_GET_CLASS(nvdimm);
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NvdimmFuncGetLabelDataIn *get_label_data;
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NvdimmFuncGetLabelDataOut *get_label_data_out;
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uint32_t status;
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int size;
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get_label_data = (NvdimmFuncGetLabelDataIn *)in->arg3;
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le32_to_cpus(&get_label_data->offset);
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le32_to_cpus(&get_label_data->length);
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nvdimm_debug("Read Label Data: offset %#x length %#x.\n",
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get_label_data->offset, get_label_data->length);
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status = nvdimm_rw_label_data_check(nvdimm, get_label_data->offset,
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get_label_data->length);
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if (status != 0 /* Success */) {
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nvdimm_dsm_no_payload(status, dsm_mem_addr);
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return;
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}
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size = sizeof(*get_label_data_out) + get_label_data->length;
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assert(size <= 4096);
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get_label_data_out = g_malloc(size);
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get_label_data_out->len = cpu_to_le32(size);
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get_label_data_out->func_ret_status = cpu_to_le32(0 /* Success */);
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nvc->read_label_data(nvdimm, get_label_data_out->out_buf,
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get_label_data->length, get_label_data->offset);
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cpu_physical_memory_write(dsm_mem_addr, get_label_data_out, size);
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g_free(get_label_data_out);
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}
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static void nvdimm_dsm_device(NvdimmDsmIn *in, hwaddr dsm_mem_addr)
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static void nvdimm_dsm_device(NvdimmDsmIn *in, hwaddr dsm_mem_addr)
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{
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{
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NVDIMMDevice *nvdimm = nvdimm_get_device_by_handle(in->handle);
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NVDIMMDevice *nvdimm = nvdimm_get_device_by_handle(in->handle);
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@ -554,7 +628,8 @@ static void nvdimm_dsm_device(NvdimmDsmIn *in, hwaddr dsm_mem_addr)
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supported_func |= 0x1 /* Bit 0 indicates whether there is
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supported_func |= 0x1 /* Bit 0 indicates whether there is
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support for any functions other
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support for any functions other
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than function 0. */ |
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than function 0. */ |
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1 << 4 /* Get Namespace Label Size */;
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1 << 4 /* Get Namespace Label Size */ |
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1 << 5 /* Get Namespace Label Data */;
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}
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}
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nvdimm_dsm_function0(supported_func, dsm_mem_addr);
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nvdimm_dsm_function0(supported_func, dsm_mem_addr);
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return;
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return;
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@ -574,6 +649,12 @@ static void nvdimm_dsm_device(NvdimmDsmIn *in, hwaddr dsm_mem_addr)
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return;
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return;
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}
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}
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break;
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break;
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case 5 /* Get Namespace Label Data */:
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if (nvdimm->label_size) {
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nvdimm_dsm_get_label_data(nvdimm, in, dsm_mem_addr);
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return;
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}
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break;
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}
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}
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nvdimm_dsm_no_payload(1 /* Not Supported */, dsm_mem_addr);
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nvdimm_dsm_no_payload(1 /* Not Supported */, dsm_mem_addr);
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