From 44c462eb9e19dfa089b454271dd2dff5eaf1ad6d Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Mon, 19 Sep 2016 16:38:50 -0700 Subject: [PATCH] libnvdimm, region: move region-mapping input-paramters to nd_mapping_desc Before we add more libnvdimm-private fields to nd_mapping make it clear which parameters are input vs libnvdimm internals. Use struct nd_mapping_desc instead of struct nd_mapping in nd_region_desc and make struct nd_mapping private to libnvdimm. Signed-off-by: Dan Williams --- drivers/acpi/nfit/core.c | 30 +++++++++++++++--------------- drivers/nvdimm/nd.h | 14 ++++++++++++++ drivers/nvdimm/region_devs.c | 16 +++++++++------- include/linux/libnvdimm.h | 25 +++++++------------------ 4 files changed, 45 insertions(+), 40 deletions(-) diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c index 02838f928d7e..6490a15abdd3 100644 --- a/drivers/acpi/nfit/core.c +++ b/drivers/acpi/nfit/core.c @@ -1627,9 +1627,9 @@ static int acpi_nfit_init_interleave_set(struct acpi_nfit_desc *acpi_desc, if (!info) return -ENOMEM; for (i = 0; i < nr; i++) { - struct nd_mapping *nd_mapping = &ndr_desc->nd_mapping[i]; + struct nd_mapping_desc *mapping = &ndr_desc->mapping[i]; struct nfit_set_info_map *map = &info->mapping[i]; - struct nvdimm *nvdimm = nd_mapping->nvdimm; + struct nvdimm *nvdimm = mapping->nvdimm; struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm); struct acpi_nfit_memory_map *memdev = memdev_from_spa(acpi_desc, spa->range_index, i); @@ -2053,7 +2053,7 @@ static int acpi_nfit_insert_resource(struct acpi_nfit_desc *acpi_desc, } static int acpi_nfit_init_mapping(struct acpi_nfit_desc *acpi_desc, - struct nd_mapping *nd_mapping, struct nd_region_desc *ndr_desc, + struct nd_mapping_desc *mapping, struct nd_region_desc *ndr_desc, struct acpi_nfit_memory_map *memdev, struct nfit_spa *nfit_spa) { @@ -2070,12 +2070,12 @@ static int acpi_nfit_init_mapping(struct acpi_nfit_desc *acpi_desc, return -ENODEV; } - nd_mapping->nvdimm = nvdimm; + mapping->nvdimm = nvdimm; switch (nfit_spa_type(spa)) { case NFIT_SPA_PM: case NFIT_SPA_VOLATILE: - nd_mapping->start = memdev->address; - nd_mapping->size = memdev->region_size; + mapping->start = memdev->address; + mapping->size = memdev->region_size; break; case NFIT_SPA_DCR: nfit_mem = nvdimm_provider_data(nvdimm); @@ -2083,13 +2083,13 @@ static int acpi_nfit_init_mapping(struct acpi_nfit_desc *acpi_desc, dev_dbg(acpi_desc->dev, "spa%d %s missing bdw\n", spa->range_index, nvdimm_name(nvdimm)); } else { - nd_mapping->size = nfit_mem->bdw->capacity; - nd_mapping->start = nfit_mem->bdw->start_address; + mapping->size = nfit_mem->bdw->capacity; + mapping->start = nfit_mem->bdw->start_address; ndr_desc->num_lanes = nfit_mem->bdw->windows; blk_valid = 1; } - ndr_desc->nd_mapping = nd_mapping; + ndr_desc->mapping = mapping; ndr_desc->num_mappings = blk_valid; ndbr_desc = to_blk_region_desc(ndr_desc); ndbr_desc->enable = acpi_nfit_blk_region_enable; @@ -2115,7 +2115,7 @@ static bool nfit_spa_is_virtual(struct acpi_nfit_system_address *spa) static int acpi_nfit_register_region(struct acpi_nfit_desc *acpi_desc, struct nfit_spa *nfit_spa) { - static struct nd_mapping nd_mappings[ND_MAX_MAPPINGS]; + static struct nd_mapping_desc mappings[ND_MAX_MAPPINGS]; struct acpi_nfit_system_address *spa = nfit_spa->spa; struct nd_blk_region_desc ndbr_desc; struct nd_region_desc *ndr_desc; @@ -2134,7 +2134,7 @@ static int acpi_nfit_register_region(struct acpi_nfit_desc *acpi_desc, } memset(&res, 0, sizeof(res)); - memset(&nd_mappings, 0, sizeof(nd_mappings)); + memset(&mappings, 0, sizeof(mappings)); memset(&ndbr_desc, 0, sizeof(ndbr_desc)); res.start = spa->address; res.end = res.start + spa->length - 1; @@ -2150,7 +2150,7 @@ static int acpi_nfit_register_region(struct acpi_nfit_desc *acpi_desc, list_for_each_entry(nfit_memdev, &acpi_desc->memdevs, list) { struct acpi_nfit_memory_map *memdev = nfit_memdev->memdev; - struct nd_mapping *nd_mapping; + struct nd_mapping_desc *mapping; if (memdev->range_index != spa->range_index) continue; @@ -2159,14 +2159,14 @@ static int acpi_nfit_register_region(struct acpi_nfit_desc *acpi_desc, spa->range_index, ND_MAX_MAPPINGS); return -ENXIO; } - nd_mapping = &nd_mappings[count++]; - rc = acpi_nfit_init_mapping(acpi_desc, nd_mapping, ndr_desc, + mapping = &mappings[count++]; + rc = acpi_nfit_init_mapping(acpi_desc, mapping, ndr_desc, memdev, nfit_spa); if (rc) goto out; } - ndr_desc->nd_mapping = nd_mappings; + ndr_desc->mapping = mappings; ndr_desc->num_mappings = count; rc = acpi_nfit_init_interleave_set(acpi_desc, ndr_desc, spa); if (rc) diff --git a/drivers/nvdimm/nd.h b/drivers/nvdimm/nd.h index 38d6f039234e..e58c40824e1f 100644 --- a/drivers/nvdimm/nd.h +++ b/drivers/nvdimm/nd.h @@ -98,6 +98,20 @@ struct nd_percpu_lane { spinlock_t lock; }; +struct nd_mapping { + struct nvdimm *nvdimm; + struct nd_namespace_label **labels; + u64 start; + u64 size; + /* + * @ndd is for private use at region enable / disable time for + * get_ndd() + put_ndd(), all other nd_mapping to ndd + * conversions use to_ndd() which respects enabled state of the + * nvdimm. + */ + struct nvdimm_drvdata *ndd; +}; + struct nd_region { struct device dev; struct ida ns_ida; diff --git a/drivers/nvdimm/region_devs.c b/drivers/nvdimm/region_devs.c index e8d5ba7b29af..0ff43cbb15e3 100644 --- a/drivers/nvdimm/region_devs.c +++ b/drivers/nvdimm/region_devs.c @@ -755,10 +755,10 @@ static struct nd_region *nd_region_create(struct nvdimm_bus *nvdimm_bus, int ro = 0; for (i = 0; i < ndr_desc->num_mappings; i++) { - struct nd_mapping *nd_mapping = &ndr_desc->nd_mapping[i]; - struct nvdimm *nvdimm = nd_mapping->nvdimm; + struct nd_mapping_desc *mapping = &ndr_desc->mapping[i]; + struct nvdimm *nvdimm = mapping->nvdimm; - if ((nd_mapping->start | nd_mapping->size) % SZ_4K) { + if ((mapping->start | mapping->size) % SZ_4K) { dev_err(&nvdimm_bus->dev, "%s: %s mapping%d is not 4K aligned\n", caller, dev_name(&nvdimm->dev), i); @@ -809,11 +809,13 @@ static struct nd_region *nd_region_create(struct nvdimm_bus *nvdimm_bus, ndl->count = 0; } - memcpy(nd_region->mapping, ndr_desc->nd_mapping, - sizeof(struct nd_mapping) * ndr_desc->num_mappings); for (i = 0; i < ndr_desc->num_mappings; i++) { - struct nd_mapping *nd_mapping = &ndr_desc->nd_mapping[i]; - struct nvdimm *nvdimm = nd_mapping->nvdimm; + struct nd_mapping_desc *mapping = &ndr_desc->mapping[i]; + struct nvdimm *nvdimm = mapping->nvdimm; + + nd_region->mapping[i].nvdimm = nvdimm; + nd_region->mapping[i].start = mapping->start; + nd_region->mapping[i].size = mapping->size; get_device(&nvdimm->dev); } diff --git a/include/linux/libnvdimm.h b/include/linux/libnvdimm.h index 4a5f8c51f2a5..f4947fda11e7 100644 --- a/include/linux/libnvdimm.h +++ b/include/linux/libnvdimm.h @@ -50,23 +50,6 @@ typedef int (*ndctl_fn)(struct nvdimm_bus_descriptor *nd_desc, struct nvdimm *nvdimm, unsigned int cmd, void *buf, unsigned int buf_len, int *cmd_rc); -struct nd_namespace_label; -struct nvdimm_drvdata; - -struct nd_mapping { - struct nvdimm *nvdimm; - struct nd_namespace_label **labels; - u64 start; - u64 size; - /* - * @ndd is for private use at region enable / disable time for - * get_ndd() + put_ndd(), all other nd_mapping to ndd - * conversions use to_ndd() which respects enabled state of the - * nvdimm. - */ - struct nvdimm_drvdata *ndd; -}; - struct nvdimm_bus_descriptor { const struct attribute_group **attr_groups; unsigned long cmd_mask; @@ -89,9 +72,15 @@ struct nd_interleave_set { u64 cookie; }; +struct nd_mapping_desc { + struct nvdimm *nvdimm; + u64 start; + u64 size; +}; + struct nd_region_desc { struct resource *res; - struct nd_mapping *nd_mapping; + struct nd_mapping_desc *mapping; u16 num_mappings; const struct attribute_group **attr_groups; struct nd_interleave_set *nd_set; -- GitLab