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-rw-r--r--kernel/drivers/acpi/nfit.h186
1 files changed, 186 insertions, 0 deletions
diff --git a/kernel/drivers/acpi/nfit.h b/kernel/drivers/acpi/nfit.h
new file mode 100644
index 000000000..3d549a383
--- /dev/null
+++ b/kernel/drivers/acpi/nfit.h
@@ -0,0 +1,186 @@
+/*
+ * NVDIMM Firmware Interface Table - NFIT
+ *
+ * Copyright(c) 2013-2015 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+#ifndef __NFIT_H__
+#define __NFIT_H__
+#include <linux/libnvdimm.h>
+#include <linux/types.h>
+#include <linux/uuid.h>
+#include <linux/acpi.h>
+#include <acpi/acuuid.h>
+
+#define UUID_NFIT_BUS "2f10e7a4-9e91-11e4-89d3-123b93f75cba"
+#define UUID_NFIT_DIMM "4309ac30-0d11-11e4-9191-0800200c9a66"
+#define ACPI_NFIT_MEM_FAILED_MASK (ACPI_NFIT_MEM_SAVE_FAILED \
+ | ACPI_NFIT_MEM_RESTORE_FAILED | ACPI_NFIT_MEM_FLUSH_FAILED \
+ | ACPI_NFIT_MEM_NOT_ARMED)
+
+enum nfit_uuids {
+ NFIT_SPA_VOLATILE,
+ NFIT_SPA_PM,
+ NFIT_SPA_DCR,
+ NFIT_SPA_BDW,
+ NFIT_SPA_VDISK,
+ NFIT_SPA_VCD,
+ NFIT_SPA_PDISK,
+ NFIT_SPA_PCD,
+ NFIT_DEV_BUS,
+ NFIT_DEV_DIMM,
+ NFIT_UUID_MAX,
+};
+
+enum {
+ ND_BLK_READ_FLUSH = 1,
+ ND_BLK_DCR_LATCH = 2,
+};
+
+struct nfit_spa {
+ struct acpi_nfit_system_address *spa;
+ struct list_head list;
+ int is_registered;
+};
+
+struct nfit_dcr {
+ struct acpi_nfit_control_region *dcr;
+ struct list_head list;
+};
+
+struct nfit_bdw {
+ struct acpi_nfit_data_region *bdw;
+ struct list_head list;
+};
+
+struct nfit_idt {
+ struct acpi_nfit_interleave *idt;
+ struct list_head list;
+};
+
+struct nfit_flush {
+ struct acpi_nfit_flush_address *flush;
+ struct list_head list;
+};
+
+struct nfit_memdev {
+ struct acpi_nfit_memory_map *memdev;
+ struct list_head list;
+};
+
+/* assembled tables for a given dimm/memory-device */
+struct nfit_mem {
+ struct nvdimm *nvdimm;
+ struct acpi_nfit_memory_map *memdev_dcr;
+ struct acpi_nfit_memory_map *memdev_pmem;
+ struct acpi_nfit_memory_map *memdev_bdw;
+ struct acpi_nfit_control_region *dcr;
+ struct acpi_nfit_data_region *bdw;
+ struct acpi_nfit_system_address *spa_dcr;
+ struct acpi_nfit_system_address *spa_bdw;
+ struct acpi_nfit_interleave *idt_dcr;
+ struct acpi_nfit_interleave *idt_bdw;
+ struct nfit_flush *nfit_flush;
+ struct list_head list;
+ struct acpi_device *adev;
+ unsigned long dsm_mask;
+};
+
+struct acpi_nfit_desc {
+ struct nvdimm_bus_descriptor nd_desc;
+ struct acpi_table_header acpi_header;
+ struct acpi_nfit_header *nfit;
+ struct mutex spa_map_mutex;
+ struct mutex init_mutex;
+ struct list_head spa_maps;
+ struct list_head memdevs;
+ struct list_head flushes;
+ struct list_head dimms;
+ struct list_head spas;
+ struct list_head dcrs;
+ struct list_head bdws;
+ struct list_head idts;
+ struct nvdimm_bus *nvdimm_bus;
+ struct device *dev;
+ unsigned long dimm_dsm_force_en;
+ unsigned long bus_dsm_force_en;
+ int (*blk_do_io)(struct nd_blk_region *ndbr, resource_size_t dpa,
+ void *iobuf, u64 len, int rw);
+};
+
+enum nd_blk_mmio_selector {
+ BDW,
+ DCR,
+};
+
+struct nd_blk_addr {
+ union {
+ void __iomem *base;
+ void __pmem *aperture;
+ };
+};
+
+struct nfit_blk {
+ struct nfit_blk_mmio {
+ struct nd_blk_addr addr;
+ u64 size;
+ u64 base_offset;
+ u32 line_size;
+ u32 num_lines;
+ u32 table_size;
+ struct acpi_nfit_interleave *idt;
+ struct acpi_nfit_system_address *spa;
+ } mmio[2];
+ struct nd_region *nd_region;
+ u64 bdw_offset; /* post interleave offset */
+ u64 stat_offset;
+ u64 cmd_offset;
+ void __iomem *nvdimm_flush;
+ u32 dimm_flags;
+};
+
+enum spa_map_type {
+ SPA_MAP_CONTROL,
+ SPA_MAP_APERTURE,
+};
+
+struct nfit_spa_mapping {
+ struct acpi_nfit_desc *acpi_desc;
+ struct acpi_nfit_system_address *spa;
+ struct list_head list;
+ struct kref kref;
+ enum spa_map_type type;
+ struct nd_blk_addr addr;
+};
+
+static inline struct nfit_spa_mapping *to_spa_map(struct kref *kref)
+{
+ return container_of(kref, struct nfit_spa_mapping, kref);
+}
+
+static inline struct acpi_nfit_memory_map *__to_nfit_memdev(
+ struct nfit_mem *nfit_mem)
+{
+ if (nfit_mem->memdev_dcr)
+ return nfit_mem->memdev_dcr;
+ return nfit_mem->memdev_pmem;
+}
+
+static inline struct acpi_nfit_desc *to_acpi_desc(
+ struct nvdimm_bus_descriptor *nd_desc)
+{
+ return container_of(nd_desc, struct acpi_nfit_desc, nd_desc);
+}
+
+const u8 *to_nfit_uuid(enum nfit_uuids id);
+int acpi_nfit_init(struct acpi_nfit_desc *nfit, acpi_size sz);
+extern const struct attribute_group *acpi_nfit_attribute_groups[];
+#endif /* __NFIT_H__ */