diff options
Diffstat (limited to 'hw/ppc/spapr_nvdimm.c')
| -rw-r--r-- | hw/ppc/spapr_nvdimm.c | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/hw/ppc/spapr_nvdimm.c b/hw/ppc/spapr_nvdimm.c new file mode 100644 index 0000000..d03c8d3 --- /dev/null +++ b/hw/ppc/spapr_nvdimm.c @@ -0,0 +1,177 @@ +/* + * QEMU PAPR Storage Class Memory Interfaces + * + * Copyright (c) 2019-2020, IBM Corporation. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ +#include "qemu/osdep.h" +#include "qapi/error.h" +#include "hw/ppc/spapr_drc.h" +#include "hw/ppc/spapr_nvdimm.h" +#include "hw/mem/nvdimm.h" +#include "qemu/nvdimm-utils.h" +#include "hw/ppc/fdt.h" + +void spapr_nvdimm_validate_opts(NVDIMMDevice *nvdimm, uint64_t size, + Error **errp) +{ + char *uuidstr = NULL; + QemuUUID uuid; + + if (size % SPAPR_MINIMUM_SCM_BLOCK_SIZE) { + error_setg(errp, "NVDIMM memory size excluding the label area" + " must be a multiple of %" PRIu64 "MB", + SPAPR_MINIMUM_SCM_BLOCK_SIZE / MiB); + return; + } + + uuidstr = object_property_get_str(OBJECT(nvdimm), NVDIMM_UUID_PROP, NULL); + qemu_uuid_parse(uuidstr, &uuid); + g_free(uuidstr); + + if (qemu_uuid_is_null(&uuid)) { + error_setg(errp, "NVDIMM device requires the uuid to be set"); + return; + } +} + + +void spapr_add_nvdimm(DeviceState *dev, uint64_t slot, Error **errp) +{ + SpaprDrc *drc; + bool hotplugged = spapr_drc_hotplugged(dev); + Error *local_err = NULL; + + drc = spapr_drc_by_id(TYPE_SPAPR_DRC_PMEM, slot); + g_assert(drc); + + spapr_drc_attach(drc, dev, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + + if (hotplugged) { + spapr_hotplug_req_add_by_index(drc); + } +} + +int spapr_pmem_dt_populate(SpaprDrc *drc, SpaprMachineState *spapr, + void *fdt, int *fdt_start_offset, Error **errp) +{ + NVDIMMDevice *nvdimm = NVDIMM(drc->dev); + + *fdt_start_offset = spapr_dt_nvdimm(fdt, 0, nvdimm); + + return 0; +} + +void spapr_create_nvdimm_dr_connectors(SpaprMachineState *spapr) +{ + MachineState *machine = MACHINE(spapr); + int i; + + for (i = 0; i < machine->ram_slots; i++) { + spapr_dr_connector_new(OBJECT(spapr), TYPE_SPAPR_DRC_PMEM, i); + } +} + + +int spapr_dt_nvdimm(void *fdt, int parent_offset, + NVDIMMDevice *nvdimm) +{ + int child_offset; + char *buf; + SpaprDrc *drc; + uint32_t drc_idx; + uint32_t node = object_property_get_uint(OBJECT(nvdimm), PC_DIMM_NODE_PROP, + &error_abort); + uint64_t slot = object_property_get_uint(OBJECT(nvdimm), PC_DIMM_SLOT_PROP, + &error_abort); + uint32_t associativity[] = { + cpu_to_be32(0x4), /* length */ + cpu_to_be32(0x0), cpu_to_be32(0x0), + cpu_to_be32(0x0), cpu_to_be32(node) + }; + uint64_t lsize = nvdimm->label_size; + uint64_t size = object_property_get_int(OBJECT(nvdimm), PC_DIMM_SIZE_PROP, + NULL); + + drc = spapr_drc_by_id(TYPE_SPAPR_DRC_PMEM, slot); + g_assert(drc); + + drc_idx = spapr_drc_index(drc); + + buf = g_strdup_printf("ibm,pmemory@%x", drc_idx); + child_offset = fdt_add_subnode(fdt, parent_offset, buf); + g_free(buf); + + _FDT(child_offset); + + _FDT((fdt_setprop_cell(fdt, child_offset, "reg", drc_idx))); + _FDT((fdt_setprop_string(fdt, child_offset, "compatible", "ibm,pmemory"))); + _FDT((fdt_setprop_string(fdt, child_offset, "device_type", "ibm,pmemory"))); + + _FDT((fdt_setprop(fdt, child_offset, "ibm,associativity", associativity, + sizeof(associativity)))); + + buf = qemu_uuid_unparse_strdup(&nvdimm->uuid); + _FDT((fdt_setprop_string(fdt, child_offset, "ibm,unit-guid", buf))); + g_free(buf); + + _FDT((fdt_setprop_cell(fdt, child_offset, "ibm,my-drc-index", drc_idx))); + + _FDT((fdt_setprop_u64(fdt, child_offset, "ibm,block-size", + SPAPR_MINIMUM_SCM_BLOCK_SIZE))); + _FDT((fdt_setprop_u64(fdt, child_offset, "ibm,number-of-blocks", + size / SPAPR_MINIMUM_SCM_BLOCK_SIZE))); + _FDT((fdt_setprop_cell(fdt, child_offset, "ibm,metadata-size", lsize))); + + _FDT((fdt_setprop_string(fdt, child_offset, "ibm,pmem-application", + "operating-system"))); + _FDT(fdt_setprop(fdt, child_offset, "ibm,cache-flush-required", NULL, 0)); + + return child_offset; +} + +void spapr_dt_persistent_memory(void *fdt) +{ + int offset = fdt_subnode_offset(fdt, 0, "persistent-memory"); + GSList *iter, *nvdimms = nvdimm_get_device_list(); + + if (offset < 0) { + offset = fdt_add_subnode(fdt, 0, "persistent-memory"); + _FDT(offset); + _FDT((fdt_setprop_cell(fdt, offset, "#address-cells", 0x1))); + _FDT((fdt_setprop_cell(fdt, offset, "#size-cells", 0x0))); + _FDT((fdt_setprop_string(fdt, offset, "device_type", + "ibm,persistent-memory"))); + } + + /* Create DT entries for cold plugged NVDIMM devices */ + for (iter = nvdimms; iter; iter = iter->next) { + NVDIMMDevice *nvdimm = iter->data; + + spapr_dt_nvdimm(fdt, offset, nvdimm); + } + g_slist_free(nvdimms); + + return; +} |