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Diffstat (limited to 'tools/testing/nvdimm/test/nfit.c')
| -rw-r--r-- | tools/testing/nvdimm/test/nfit.c | 2957 |
1 files changed, 2957 insertions, 0 deletions
diff --git a/tools/testing/nvdimm/test/nfit.c b/tools/testing/nvdimm/test/nfit.c new file mode 100644 index 000000000..fa763dbfd --- /dev/null +++ b/tools/testing/nvdimm/test/nfit.c @@ -0,0 +1,2957 @@ +/* + * 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. + */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt +#include <linux/platform_device.h> +#include <linux/dma-mapping.h> +#include <linux/workqueue.h> +#include <linux/libnvdimm.h> +#include <linux/genalloc.h> +#include <linux/vmalloc.h> +#include <linux/device.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/ndctl.h> +#include <linux/sizes.h> +#include <linux/list.h> +#include <linux/slab.h> +#include <nd-core.h> +#include <nfit.h> +#include <nd.h> +#include "nfit_test.h" +#include "../watermark.h" + +#include <asm/mcsafe_test.h> + +/* + * Generate an NFIT table to describe the following topology: + * + * BUS0: Interleaved PMEM regions, and aliasing with BLK regions + * + * (a) (b) DIMM BLK-REGION + * +----------+--------------+----------+---------+ + * +------+ | blk2.0 | pm0.0 | blk2.1 | pm1.0 | 0 region2 + * | imc0 +--+- - - - - region0 - - - -+----------+ + + * +--+---+ | blk3.0 | pm0.0 | blk3.1 | pm1.0 | 1 region3 + * | +----------+--------------v----------v v + * +--+---+ | | + * | cpu0 | region1 + * +--+---+ | | + * | +-------------------------^----------^ ^ + * +--+---+ | blk4.0 | pm1.0 | 2 region4 + * | imc1 +--+-------------------------+----------+ + + * +------+ | blk5.0 | pm1.0 | 3 region5 + * +-------------------------+----------+-+-------+ + * + * +--+---+ + * | cpu1 | + * +--+---+ (Hotplug DIMM) + * | +----------------------------------------------+ + * +--+---+ | blk6.0/pm7.0 | 4 region6/7 + * | imc0 +--+----------------------------------------------+ + * +------+ + * + * + * *) In this layout we have four dimms and two memory controllers in one + * socket. Each unique interface (BLK or PMEM) to DPA space + * is identified by a region device with a dynamically assigned id. + * + * *) The first portion of dimm0 and dimm1 are interleaved as REGION0. + * A single PMEM namespace "pm0.0" is created using half of the + * REGION0 SPA-range. REGION0 spans dimm0 and dimm1. PMEM namespace + * allocate from from the bottom of a region. The unallocated + * portion of REGION0 aliases with REGION2 and REGION3. That + * unallacted capacity is reclaimed as BLK namespaces ("blk2.0" and + * "blk3.0") starting at the base of each DIMM to offset (a) in those + * DIMMs. "pm0.0", "blk2.0" and "blk3.0" are free-form readable + * names that can be assigned to a namespace. + * + * *) In the last portion of dimm0 and dimm1 we have an interleaved + * SPA range, REGION1, that spans those two dimms as well as dimm2 + * and dimm3. Some of REGION1 allocated to a PMEM namespace named + * "pm1.0" the rest is reclaimed in 4 BLK namespaces (for each + * dimm in the interleave set), "blk2.1", "blk3.1", "blk4.0", and + * "blk5.0". + * + * *) The portion of dimm2 and dimm3 that do not participate in the + * REGION1 interleaved SPA range (i.e. the DPA address below offset + * (b) are also included in the "blk4.0" and "blk5.0" namespaces. + * Note, that BLK namespaces need not be contiguous in DPA-space, and + * can consume aliased capacity from multiple interleave sets. + * + * BUS1: Legacy NVDIMM (single contiguous range) + * + * region2 + * +---------------------+ + * |---------------------| + * || pm2.0 || + * |---------------------| + * +---------------------+ + * + * *) A NFIT-table may describe a simple system-physical-address range + * with no BLK aliasing. This type of region may optionally + * reference an NVDIMM. + */ +enum { + NUM_PM = 3, + NUM_DCR = 5, + NUM_HINTS = 8, + NUM_BDW = NUM_DCR, + NUM_SPA = NUM_PM + NUM_DCR + NUM_BDW, + NUM_MEM = NUM_DCR + NUM_BDW + 2 /* spa0 iset */ + + 4 /* spa1 iset */ + 1 /* spa11 iset */, + DIMM_SIZE = SZ_32M, + LABEL_SIZE = SZ_128K, + SPA_VCD_SIZE = SZ_4M, + SPA0_SIZE = DIMM_SIZE, + SPA1_SIZE = DIMM_SIZE*2, + SPA2_SIZE = DIMM_SIZE, + BDW_SIZE = 64 << 8, + DCR_SIZE = 12, + NUM_NFITS = 2, /* permit testing multiple NFITs per system */ +}; + +struct nfit_test_dcr { + __le64 bdw_addr; + __le32 bdw_status; + __u8 aperature[BDW_SIZE]; +}; + +#define NFIT_DIMM_HANDLE(node, socket, imc, chan, dimm) \ + (((node & 0xfff) << 16) | ((socket & 0xf) << 12) \ + | ((imc & 0xf) << 8) | ((chan & 0xf) << 4) | (dimm & 0xf)) + +static u32 handle[] = { + [0] = NFIT_DIMM_HANDLE(0, 0, 0, 0, 0), + [1] = NFIT_DIMM_HANDLE(0, 0, 0, 0, 1), + [2] = NFIT_DIMM_HANDLE(0, 0, 1, 0, 0), + [3] = NFIT_DIMM_HANDLE(0, 0, 1, 0, 1), + [4] = NFIT_DIMM_HANDLE(0, 1, 0, 0, 0), + [5] = NFIT_DIMM_HANDLE(1, 0, 0, 0, 0), + [6] = NFIT_DIMM_HANDLE(1, 0, 0, 0, 1), +}; + +static unsigned long dimm_fail_cmd_flags[ARRAY_SIZE(handle)]; +static int dimm_fail_cmd_code[ARRAY_SIZE(handle)]; + +static const struct nd_intel_smart smart_def = { + .flags = ND_INTEL_SMART_HEALTH_VALID + | ND_INTEL_SMART_SPARES_VALID + | ND_INTEL_SMART_ALARM_VALID + | ND_INTEL_SMART_USED_VALID + | ND_INTEL_SMART_SHUTDOWN_VALID + | ND_INTEL_SMART_MTEMP_VALID + | ND_INTEL_SMART_CTEMP_VALID, + .health = ND_INTEL_SMART_NON_CRITICAL_HEALTH, + .media_temperature = 23 * 16, + .ctrl_temperature = 25 * 16, + .pmic_temperature = 40 * 16, + .spares = 75, + .alarm_flags = ND_INTEL_SMART_SPARE_TRIP + | ND_INTEL_SMART_TEMP_TRIP, + .ait_status = 1, + .life_used = 5, + .shutdown_state = 0, + .vendor_size = 0, + .shutdown_count = 100, +}; + +struct nfit_test_fw { + enum intel_fw_update_state state; + u32 context; + u64 version; + u32 size_received; + u64 end_time; +}; + +struct nfit_test { + struct acpi_nfit_desc acpi_desc; + struct platform_device pdev; + struct list_head resources; + void *nfit_buf; + dma_addr_t nfit_dma; + size_t nfit_size; + size_t nfit_filled; + int dcr_idx; + int num_dcr; + int num_pm; + void **dimm; + dma_addr_t *dimm_dma; + void **flush; + dma_addr_t *flush_dma; + void **label; + dma_addr_t *label_dma; + void **spa_set; + dma_addr_t *spa_set_dma; + struct nfit_test_dcr **dcr; + dma_addr_t *dcr_dma; + int (*alloc)(struct nfit_test *t); + void (*setup)(struct nfit_test *t); + int setup_hotplug; + union acpi_object **_fit; + dma_addr_t _fit_dma; + struct ars_state { + struct nd_cmd_ars_status *ars_status; + unsigned long deadline; + spinlock_t lock; + } ars_state; + struct device *dimm_dev[ARRAY_SIZE(handle)]; + struct nd_intel_smart *smart; + struct nd_intel_smart_threshold *smart_threshold; + struct badrange badrange; + struct work_struct work; + struct nfit_test_fw *fw; +}; + +static struct workqueue_struct *nfit_wq; + +static struct gen_pool *nfit_pool; + +static struct nfit_test *to_nfit_test(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + + return container_of(pdev, struct nfit_test, pdev); +} + +static int nd_intel_test_get_fw_info(struct nfit_test *t, + struct nd_intel_fw_info *nd_cmd, unsigned int buf_len, + int idx) +{ + struct device *dev = &t->pdev.dev; + struct nfit_test_fw *fw = &t->fw[idx]; + + dev_dbg(dev, "%s(nfit_test: %p nd_cmd: %p, buf_len: %u, idx: %d\n", + __func__, t, nd_cmd, buf_len, idx); + + if (buf_len < sizeof(*nd_cmd)) + return -EINVAL; + + nd_cmd->status = 0; + nd_cmd->storage_size = INTEL_FW_STORAGE_SIZE; + nd_cmd->max_send_len = INTEL_FW_MAX_SEND_LEN; + nd_cmd->query_interval = INTEL_FW_QUERY_INTERVAL; + nd_cmd->max_query_time = INTEL_FW_QUERY_MAX_TIME; + nd_cmd->update_cap = 0; + nd_cmd->fis_version = INTEL_FW_FIS_VERSION; + nd_cmd->run_version = 0; + nd_cmd->updated_version = fw->version; + + return 0; +} + +static int nd_intel_test_start_update(struct nfit_test *t, + struct nd_intel_fw_start *nd_cmd, unsigned int buf_len, + int idx) +{ + struct device *dev = &t->pdev.dev; + struct nfit_test_fw *fw = &t->fw[idx]; + + dev_dbg(dev, "%s(nfit_test: %p nd_cmd: %p buf_len: %u idx: %d)\n", + __func__, t, nd_cmd, buf_len, idx); + + if (buf_len < sizeof(*nd_cmd)) + return -EINVAL; + + if (fw->state != FW_STATE_NEW) { + /* extended status, FW update in progress */ + nd_cmd->status = 0x10007; + return 0; + } + + fw->state = FW_STATE_IN_PROGRESS; + fw->context++; + fw->size_received = 0; + nd_cmd->status = 0; + nd_cmd->context = fw->context; + + dev_dbg(dev, "%s: context issued: %#x\n", __func__, nd_cmd->context); + + return 0; +} + +static int nd_intel_test_send_data(struct nfit_test *t, + struct nd_intel_fw_send_data *nd_cmd, unsigned int buf_len, + int idx) +{ + struct device *dev = &t->pdev.dev; + struct nfit_test_fw *fw = &t->fw[idx]; + u32 *status = (u32 *)&nd_cmd->data[nd_cmd->length]; + + dev_dbg(dev, "%s(nfit_test: %p nd_cmd: %p buf_len: %u idx: %d)\n", + __func__, t, nd_cmd, buf_len, idx); + + if (buf_len < sizeof(*nd_cmd)) + return -EINVAL; + + + dev_dbg(dev, "%s: cmd->status: %#x\n", __func__, *status); + dev_dbg(dev, "%s: cmd->data[0]: %#x\n", __func__, nd_cmd->data[0]); + dev_dbg(dev, "%s: cmd->data[%u]: %#x\n", __func__, nd_cmd->length-1, + nd_cmd->data[nd_cmd->length-1]); + + if (fw->state != FW_STATE_IN_PROGRESS) { + dev_dbg(dev, "%s: not in IN_PROGRESS state\n", __func__); + *status = 0x5; + return 0; + } + + if (nd_cmd->context != fw->context) { + dev_dbg(dev, "%s: incorrect context: in: %#x correct: %#x\n", + __func__, nd_cmd->context, fw->context); + *status = 0x10007; + return 0; + } + + /* + * check offset + len > size of fw storage + * check length is > max send length + */ + if (nd_cmd->offset + nd_cmd->length > INTEL_FW_STORAGE_SIZE || + nd_cmd->length > INTEL_FW_MAX_SEND_LEN) { + *status = 0x3; + dev_dbg(dev, "%s: buffer boundary violation\n", __func__); + return 0; + } + + fw->size_received += nd_cmd->length; + dev_dbg(dev, "%s: copying %u bytes, %u bytes so far\n", + __func__, nd_cmd->length, fw->size_received); + *status = 0; + return 0; +} + +static int nd_intel_test_finish_fw(struct nfit_test *t, + struct nd_intel_fw_finish_update *nd_cmd, + unsigned int buf_len, int idx) +{ + struct device *dev = &t->pdev.dev; + struct nfit_test_fw *fw = &t->fw[idx]; + + dev_dbg(dev, "%s(nfit_test: %p nd_cmd: %p buf_len: %u idx: %d)\n", + __func__, t, nd_cmd, buf_len, idx); + + if (fw->state == FW_STATE_UPDATED) { + /* update already done, need cold boot */ + nd_cmd->status = 0x20007; + return 0; + } + + dev_dbg(dev, "%s: context: %#x ctrl_flags: %#x\n", + __func__, nd_cmd->context, nd_cmd->ctrl_flags); + + switch (nd_cmd->ctrl_flags) { + case 0: /* finish */ + if (nd_cmd->context != fw->context) { + dev_dbg(dev, "%s: incorrect context: in: %#x correct: %#x\n", + __func__, nd_cmd->context, + fw->context); + nd_cmd->status = 0x10007; + return 0; + } + nd_cmd->status = 0; + fw->state = FW_STATE_VERIFY; + /* set 1 second of time for firmware "update" */ + fw->end_time = jiffies + HZ; + break; + + case 1: /* abort */ + fw->size_received = 0; + /* successfully aborted status */ + nd_cmd->status = 0x40007; + fw->state = FW_STATE_NEW; + dev_dbg(dev, "%s: abort successful\n", __func__); + break; + + default: /* bad control flag */ + dev_warn(dev, "%s: unknown control flag: %#x\n", + __func__, nd_cmd->ctrl_flags); + return -EINVAL; + } + + return 0; +} + +static int nd_intel_test_finish_query(struct nfit_test *t, + struct nd_intel_fw_finish_query *nd_cmd, + unsigned int buf_len, int idx) +{ + struct device *dev = &t->pdev.dev; + struct nfit_test_fw *fw = &t->fw[idx]; + + dev_dbg(dev, "%s(nfit_test: %p nd_cmd: %p buf_len: %u idx: %d)\n", + __func__, t, nd_cmd, buf_len, idx); + + if (buf_len < sizeof(*nd_cmd)) + return -EINVAL; + + if (nd_cmd->context != fw->context) { + dev_dbg(dev, "%s: incorrect context: in: %#x correct: %#x\n", + __func__, nd_cmd->context, fw->context); + nd_cmd->status = 0x10007; + return 0; + } + + dev_dbg(dev, "%s context: %#x\n", __func__, nd_cmd->context); + + switch (fw->state) { + case FW_STATE_NEW: + nd_cmd->updated_fw_rev = 0; + nd_cmd->status = 0; + dev_dbg(dev, "%s: new state\n", __func__); + break; + + case FW_STATE_IN_PROGRESS: + /* sequencing error */ + nd_cmd->status = 0x40007; + nd_cmd->updated_fw_rev = 0; + dev_dbg(dev, "%s: sequence error\n", __func__); + break; + + case FW_STATE_VERIFY: + if (time_is_after_jiffies64(fw->end_time)) { + nd_cmd->updated_fw_rev = 0; + nd_cmd->status = 0x20007; + dev_dbg(dev, "%s: still verifying\n", __func__); + break; + } + + dev_dbg(dev, "%s: transition out verify\n", __func__); + fw->state = FW_STATE_UPDATED; + /* we are going to fall through if it's "done" */ + case FW_STATE_UPDATED: + nd_cmd->status = 0; + /* bogus test version */ + fw->version = nd_cmd->updated_fw_rev = + INTEL_FW_FAKE_VERSION; + dev_dbg(dev, "%s: updated\n", __func__); + break; + + default: /* we should never get here */ + return -EINVAL; + } + + return 0; +} + +static int nfit_test_cmd_get_config_size(struct nd_cmd_get_config_size *nd_cmd, + unsigned int buf_len) +{ + if (buf_len < sizeof(*nd_cmd)) + return -EINVAL; + + nd_cmd->status = 0; + nd_cmd->config_size = LABEL_SIZE; + nd_cmd->max_xfer = SZ_4K; + + return 0; +} + +static int nfit_test_cmd_get_config_data(struct nd_cmd_get_config_data_hdr + *nd_cmd, unsigned int buf_len, void *label) +{ + unsigned int len, offset = nd_cmd->in_offset; + int rc; + + if (buf_len < sizeof(*nd_cmd)) + return -EINVAL; + if (offset >= LABEL_SIZE) + return -EINVAL; + if (nd_cmd->in_length + sizeof(*nd_cmd) > buf_len) + return -EINVAL; + + nd_cmd->status = 0; + len = min(nd_cmd->in_length, LABEL_SIZE - offset); + memcpy(nd_cmd->out_buf, label + offset, len); + rc = buf_len - sizeof(*nd_cmd) - len; + + return rc; +} + +static int nfit_test_cmd_set_config_data(struct nd_cmd_set_config_hdr *nd_cmd, + unsigned int buf_len, void *label) +{ + unsigned int len, offset = nd_cmd->in_offset; + u32 *status; + int rc; + + if (buf_len < sizeof(*nd_cmd)) + return -EINVAL; + if (offset >= LABEL_SIZE) + return -EINVAL; + if (nd_cmd->in_length + sizeof(*nd_cmd) + 4 > buf_len) + return -EINVAL; + + status = (void *)nd_cmd + nd_cmd->in_length + sizeof(*nd_cmd); + *status = 0; + len = min(nd_cmd->in_length, LABEL_SIZE - offset); + memcpy(label + offset, nd_cmd->in_buf, len); + rc = buf_len - sizeof(*nd_cmd) - (len + 4); + + return rc; +} + +#define NFIT_TEST_CLEAR_ERR_UNIT 256 + +static int nfit_test_cmd_ars_cap(struct nd_cmd_ars_cap *nd_cmd, + unsigned int buf_len) +{ + int ars_recs; + + if (buf_len < sizeof(*nd_cmd)) + return -EINVAL; + + /* for testing, only store up to n records that fit within 4k */ + ars_recs = SZ_4K / sizeof(struct nd_ars_record); + + nd_cmd->max_ars_out = sizeof(struct nd_cmd_ars_status) + + ars_recs * sizeof(struct nd_ars_record); + nd_cmd->status = (ND_ARS_PERSISTENT | ND_ARS_VOLATILE) << 16; + nd_cmd->clear_err_unit = NFIT_TEST_CLEAR_ERR_UNIT; + + return 0; +} + +static void post_ars_status(struct ars_state *ars_state, + struct badrange *badrange, u64 addr, u64 len) +{ + struct nd_cmd_ars_status *ars_status; + struct nd_ars_record *ars_record; + struct badrange_entry *be; + u64 end = addr + len - 1; + int i = 0; + + ars_state->deadline = jiffies + 1*HZ; + ars_status = ars_state->ars_status; + ars_status->status = 0; + ars_status->address = addr; + ars_status->length = len; + ars_status->type = ND_ARS_PERSISTENT; + + spin_lock(&badrange->lock); + list_for_each_entry(be, &badrange->list, list) { + u64 be_end = be->start + be->length - 1; + u64 rstart, rend; + + /* skip entries outside the range */ + if (be_end < addr || be->start > end) + continue; + + rstart = (be->start < addr) ? addr : be->start; + rend = (be_end < end) ? be_end : end; + ars_record = &ars_status->records[i]; + ars_record->handle = 0; + ars_record->err_address = rstart; + ars_record->length = rend - rstart + 1; + i++; + } + spin_unlock(&badrange->lock); + ars_status->num_records = i; + ars_status->out_length = sizeof(struct nd_cmd_ars_status) + + i * sizeof(struct nd_ars_record); +} + +static int nfit_test_cmd_ars_start(struct nfit_test *t, + struct ars_state *ars_state, + struct nd_cmd_ars_start *ars_start, unsigned int buf_len, + int *cmd_rc) +{ + if (buf_len < sizeof(*ars_start)) + return -EINVAL; + + spin_lock(&ars_state->lock); + if (time_before(jiffies, ars_state->deadline)) { + ars_start->status = NFIT_ARS_START_BUSY; + *cmd_rc = -EBUSY; + } else { + ars_start->status = 0; + ars_start->scrub_time = 1; + post_ars_status(ars_state, &t->badrange, ars_start->address, + ars_start->length); + *cmd_rc = 0; + } + spin_unlock(&ars_state->lock); + + return 0; +} + +static int nfit_test_cmd_ars_status(struct ars_state *ars_state, + struct nd_cmd_ars_status *ars_status, unsigned int buf_len, + int *cmd_rc) +{ + if (buf_len < ars_state->ars_status->out_length) + return -EINVAL; + + spin_lock(&ars_state->lock); + if (time_before(jiffies, ars_state->deadline)) { + memset(ars_status, 0, buf_len); + ars_status->status = NFIT_ARS_STATUS_BUSY; + ars_status->out_length = sizeof(*ars_status); + *cmd_rc = -EBUSY; + } else { + memcpy(ars_status, ars_state->ars_status, + ars_state->ars_status->out_length); + *cmd_rc = 0; + } + spin_unlock(&ars_state->lock); + return 0; +} + +static int nfit_test_cmd_clear_error(struct nfit_test *t, + struct nd_cmd_clear_error *clear_err, + unsigned int buf_len, int *cmd_rc) +{ + const u64 mask = NFIT_TEST_CLEAR_ERR_UNIT - 1; + if (buf_len < sizeof(*clear_err)) + return -EINVAL; + + if ((clear_err->address & mask) || (clear_err->length & mask)) + return -EINVAL; + + badrange_forget(&t->badrange, clear_err->address, clear_err->length); + clear_err->status = 0; + clear_err->cleared = clear_err->length; + *cmd_rc = 0; + return 0; +} + +struct region_search_spa { + u64 addr; + struct nd_region *region; +}; + +static int is_region_device(struct device *dev) +{ + return !strncmp(dev->kobj.name, "region", 6); +} + +static int nfit_test_search_region_spa(struct device *dev, void *data) +{ + struct region_search_spa *ctx = data; + struct nd_region *nd_region; + resource_size_t ndr_end; + + if (!is_region_device(dev)) + return 0; + + nd_region = to_nd_region(dev); + ndr_end = nd_region->ndr_start + nd_region->ndr_size; + + if (ctx->addr >= nd_region->ndr_start && ctx->addr < ndr_end) { + ctx->region = nd_region; + return 1; + } + + return 0; +} + +static int nfit_test_search_spa(struct nvdimm_bus *bus, + struct nd_cmd_translate_spa *spa) +{ + int ret; + struct nd_region *nd_region = NULL; + struct nvdimm *nvdimm = NULL; + struct nd_mapping *nd_mapping = NULL; + struct region_search_spa ctx = { + .addr = spa->spa, + .region = NULL, + }; + u64 dpa; + + ret = device_for_each_child(&bus->dev, &ctx, + nfit_test_search_region_spa); + + if (!ret) + return -ENODEV; + + nd_region = ctx.region; + + dpa = ctx.addr - nd_region->ndr_start; + + /* + * last dimm is selected for test + */ + nd_mapping = &nd_region->mapping[nd_region->ndr_mappings - 1]; + nvdimm = nd_mapping->nvdimm; + + spa->devices[0].nfit_device_handle = handle[nvdimm->id]; + spa->num_nvdimms = 1; + spa->devices[0].dpa = dpa; + + return 0; +} + +static int nfit_test_cmd_translate_spa(struct nvdimm_bus *bus, + struct nd_cmd_translate_spa *spa, unsigned int buf_len) +{ + if (buf_len < spa->translate_length) + return -EINVAL; + + if (nfit_test_search_spa(bus, spa) < 0 || !spa->num_nvdimms) + spa->status = 2; + + return 0; +} + +static int nfit_test_cmd_smart(struct nd_intel_smart *smart, unsigned int buf_len, + struct nd_intel_smart *smart_data) +{ + if (buf_len < sizeof(*smart)) + return -EINVAL; + memcpy(smart, smart_data, sizeof(*smart)); + return 0; +} + +static int nfit_test_cmd_smart_threshold( + struct nd_intel_smart_threshold *out, + unsigned int buf_len, + struct nd_intel_smart_threshold *smart_t) +{ + if (buf_len < sizeof(*smart_t)) + return -EINVAL; + memcpy(out, smart_t, sizeof(*smart_t)); + return 0; +} + +static void smart_notify(struct device *bus_dev, + struct device *dimm_dev, struct nd_intel_smart *smart, + struct nd_intel_smart_threshold *thresh) +{ + dev_dbg(dimm_dev, "%s: alarm: %#x spares: %d (%d) mtemp: %d (%d) ctemp: %d (%d)\n", + __func__, thresh->alarm_control, thresh->spares, + smart->spares, thresh->media_temperature, + smart->media_temperature, thresh->ctrl_temperature, + smart->ctrl_temperature); + if (((thresh->alarm_control & ND_INTEL_SMART_SPARE_TRIP) + && smart->spares + <= thresh->spares) + || ((thresh->alarm_control & ND_INTEL_SMART_TEMP_TRIP) + && smart->media_temperature + >= thresh->media_temperature) + || ((thresh->alarm_control & ND_INTEL_SMART_CTEMP_TRIP) + && smart->ctrl_temperature + >= thresh->ctrl_temperature) + || (smart->health != ND_INTEL_SMART_NON_CRITICAL_HEALTH) + || (smart->shutdown_state != 0)) { + device_lock(bus_dev); + __acpi_nvdimm_notify(dimm_dev, 0x81); + device_unlock(bus_dev); + } +} + +static int nfit_test_cmd_smart_set_threshold( + struct nd_intel_smart_set_threshold *in, + unsigned int buf_len, + struct nd_intel_smart_threshold *thresh, + struct nd_intel_smart *smart, + struct device *bus_dev, struct device *dimm_dev) +{ + unsigned int size; + + size = sizeof(*in) - 4; + if (buf_len < size) + return -EINVAL; + memcpy(thresh->data, in, size); + in->status = 0; + smart_notify(bus_dev, dimm_dev, smart, thresh); + + return 0; +} + +static int nfit_test_cmd_smart_inject( + struct nd_intel_smart_inject *inj, + unsigned int buf_len, + struct nd_intel_smart_threshold *thresh, + struct nd_intel_smart *smart, + struct device *bus_dev, struct device *dimm_dev) +{ + if (buf_len != sizeof(*inj)) + return -EINVAL; + + if (inj->flags & ND_INTEL_SMART_INJECT_MTEMP) { + if (inj->mtemp_enable) + smart->media_temperature = inj->media_temperature; + else + smart->media_temperature = smart_def.media_temperature; + } + if (inj->flags & ND_INTEL_SMART_INJECT_SPARE) { + if (inj->spare_enable) + smart->spares = inj->spares; + else + smart->spares = smart_def.spares; + } + if (inj->flags & ND_INTEL_SMART_INJECT_FATAL) { + if (inj->fatal_enable) + smart->health = ND_INTEL_SMART_FATAL_HEALTH; + else + smart->health = ND_INTEL_SMART_NON_CRITICAL_HEALTH; + } + if (inj->flags & ND_INTEL_SMART_INJECT_SHUTDOWN) { + if (inj->unsafe_shutdown_enable) { + smart->shutdown_state = 1; + smart->shutdown_count++; + } else + smart->shutdown_state = 0; + } + inj->status = 0; + smart_notify(bus_dev, dimm_dev, smart, thresh); + + return 0; +} + +static void uc_error_notify(struct work_struct *work) +{ + struct nfit_test *t = container_of(work, typeof(*t), work); + + __acpi_nfit_notify(&t->pdev.dev, t, NFIT_NOTIFY_UC_MEMORY_ERROR); +} + +static int nfit_test_cmd_ars_error_inject(struct nfit_test *t, + struct nd_cmd_ars_err_inj *err_inj, unsigned int buf_len) +{ + int rc; + + if (buf_len != sizeof(*err_inj)) { + rc = -EINVAL; + goto err; + } + + if (err_inj->err_inj_spa_range_length <= 0) { + rc = -EINVAL; + goto err; + } + + rc = badrange_add(&t->badrange, err_inj->err_inj_spa_range_base, + err_inj->err_inj_spa_range_length); + if (rc < 0) + goto err; + + if (err_inj->err_inj_options & (1 << ND_ARS_ERR_INJ_OPT_NOTIFY)) + queue_work(nfit_wq, &t->work); + + err_inj->status = 0; + return 0; + +err: + err_inj->status = NFIT_ARS_INJECT_INVALID; + return rc; +} + +static int nfit_test_cmd_ars_inject_clear(struct nfit_test *t, + struct nd_cmd_ars_err_inj_clr *err_clr, unsigned int buf_len) +{ + int rc; + + if (buf_len != sizeof(*err_clr)) { + rc = -EINVAL; + goto err; + } + + if (err_clr->err_inj_clr_spa_range_length <= 0) { + rc = -EINVAL; + goto err; + } + + badrange_forget(&t->badrange, err_clr->err_inj_clr_spa_range_base, + err_clr->err_inj_clr_spa_range_length); + + err_clr->status = 0; + return 0; + +err: + err_clr->status = NFIT_ARS_INJECT_INVALID; + return rc; +} + +static int nfit_test_cmd_ars_inject_status(struct nfit_test *t, + struct nd_cmd_ars_err_inj_stat *err_stat, + unsigned int buf_len) +{ + struct badrange_entry *be; + int max = SZ_4K / sizeof(struct nd_error_stat_query_record); + int i = 0; + + err_stat->status = 0; + spin_lock(&t->badrange.lock); + list_for_each_entry(be, &t->badrange.list, list) { + err_stat->record[i].err_inj_stat_spa_range_base = be->start; + err_stat->record[i].err_inj_stat_spa_range_length = be->length; + i++; + if (i > max) + break; + } + spin_unlock(&t->badrange.lock); + err_stat->inj_err_rec_count = i; + + return 0; +} + +static int nd_intel_test_cmd_set_lss_status(struct nfit_test *t, + struct nd_intel_lss *nd_cmd, unsigned int buf_len) +{ + struct device *dev = &t->pdev.dev; + + if (buf_len < sizeof(*nd_cmd)) + return -EINVAL; + + switch (nd_cmd->enable) { + case 0: + nd_cmd->status = 0; + dev_dbg(dev, "%s: Latch System Shutdown Status disabled\n", + __func__); + break; + case 1: + nd_cmd->status = 0; + dev_dbg(dev, "%s: Latch System Shutdown Status enabled\n", + __func__); + break; + default: + dev_warn(dev, "Unknown enable value: %#x\n", nd_cmd->enable); + nd_cmd->status = 0x3; + break; + } + + + return 0; +} + +static int override_return_code(int dimm, unsigned int func, int rc) +{ + if ((1 << func) & dimm_fail_cmd_flags[dimm]) { + if (dimm_fail_cmd_code[dimm]) + return dimm_fail_cmd_code[dimm]; + return -EIO; + } + return rc; +} + +static int get_dimm(struct nfit_mem *nfit_mem, unsigned int func) +{ + int i; + + /* lookup per-dimm data */ + for (i = 0; i < ARRAY_SIZE(handle); i++) + if (__to_nfit_memdev(nfit_mem)->device_handle == handle[i]) + break; + if (i >= ARRAY_SIZE(handle)) + return -ENXIO; + return i; +} + +static int nfit_test_ctl(struct nvdimm_bus_descriptor *nd_desc, + struct nvdimm *nvdimm, unsigned int cmd, void *buf, + unsigned int buf_len, int *cmd_rc) +{ + struct acpi_nfit_desc *acpi_desc = to_acpi_desc(nd_desc); + struct nfit_test *t = container_of(acpi_desc, typeof(*t), acpi_desc); + unsigned int func = cmd; + int i, rc = 0, __cmd_rc; + + if (!cmd_rc) + cmd_rc = &__cmd_rc; + *cmd_rc = 0; + + if (nvdimm) { + struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm); + unsigned long cmd_mask = nvdimm_cmd_mask(nvdimm); + + if (!nfit_mem) + return -ENOTTY; + + if (cmd == ND_CMD_CALL) { + struct nd_cmd_pkg *call_pkg = buf; + + buf_len = call_pkg->nd_size_in + call_pkg->nd_size_out; + buf = (void *) call_pkg->nd_payload; + func = call_pkg->nd_command; + if (call_pkg->nd_family != nfit_mem->family) + return -ENOTTY; + + i = get_dimm(nfit_mem, func); + if (i < 0) + return i; + + switch (func) { + case ND_INTEL_ENABLE_LSS_STATUS: + rc = nd_intel_test_cmd_set_lss_status(t, + buf, buf_len); + break; + case ND_INTEL_FW_GET_INFO: + rc = nd_intel_test_get_fw_info(t, buf, + buf_len, i - t->dcr_idx); + break; + case ND_INTEL_FW_START_UPDATE: + rc = nd_intel_test_start_update(t, buf, + buf_len, i - t->dcr_idx); + break; + case ND_INTEL_FW_SEND_DATA: + rc = nd_intel_test_send_data(t, buf, + buf_len, i - t->dcr_idx); + break; + case ND_INTEL_FW_FINISH_UPDATE: + rc = nd_intel_test_finish_fw(t, buf, + buf_len, i - t->dcr_idx); + break; + case ND_INTEL_FW_FINISH_QUERY: + rc = nd_intel_test_finish_query(t, buf, + buf_len, i - t->dcr_idx); + break; + case ND_INTEL_SMART: + rc = nfit_test_cmd_smart(buf, buf_len, + &t->smart[i - t->dcr_idx]); + break; + case ND_INTEL_SMART_THRESHOLD: + rc = nfit_test_cmd_smart_threshold(buf, + buf_len, + &t->smart_threshold[i - + t->dcr_idx]); + break; + case ND_INTEL_SMART_SET_THRESHOLD: + rc = nfit_test_cmd_smart_set_threshold(buf, + buf_len, + &t->smart_threshold[i - + t->dcr_idx], + &t->smart[i - t->dcr_idx], + &t->pdev.dev, t->dimm_dev[i]); + break; + case ND_INTEL_SMART_INJECT: + rc = nfit_test_cmd_smart_inject(buf, + buf_len, + &t->smart_threshold[i - + t->dcr_idx], + &t->smart[i - t->dcr_idx], + &t->pdev.dev, t->dimm_dev[i]); + break; + default: + return -ENOTTY; + } + return override_return_code(i, func, rc); + } + + if (!test_bit(cmd, &cmd_mask) + || !test_bit(func, &nfit_mem->dsm_mask)) + return -ENOTTY; + + i = get_dimm(nfit_mem, func); + if (i < 0) + return i; + + switch (func) { + case ND_CMD_GET_CONFIG_SIZE: + rc = nfit_test_cmd_get_config_size(buf, buf_len); + break; + case ND_CMD_GET_CONFIG_DATA: + rc = nfit_test_cmd_get_config_data(buf, buf_len, + t->label[i - t->dcr_idx]); + break; + case ND_CMD_SET_CONFIG_DATA: + rc = nfit_test_cmd_set_config_data(buf, buf_len, + t->label[i - t->dcr_idx]); + break; + default: + return -ENOTTY; + } + return override_return_code(i, func, rc); + } else { + struct ars_state *ars_state = &t->ars_state; + struct nd_cmd_pkg *call_pkg = buf; + + if (!nd_desc) + return -ENOTTY; + + if (cmd == ND_CMD_CALL) { + func = call_pkg->nd_command; + + buf_len = call_pkg->nd_size_in + call_pkg->nd_size_out; + buf = (void *) call_pkg->nd_payload; + + switch (func) { + case NFIT_CMD_TRANSLATE_SPA: + rc = nfit_test_cmd_translate_spa( + acpi_desc->nvdimm_bus, buf, buf_len); + return rc; + case NFIT_CMD_ARS_INJECT_SET: + rc = nfit_test_cmd_ars_error_inject(t, buf, + buf_len); + return rc; + case NFIT_CMD_ARS_INJECT_CLEAR: + rc = nfit_test_cmd_ars_inject_clear(t, buf, + buf_len); + return rc; + case NFIT_CMD_ARS_INJECT_GET: + rc = nfit_test_cmd_ars_inject_status(t, buf, + buf_len); + return rc; + default: + return -ENOTTY; + } + } + + if (!nd_desc || !test_bit(cmd, &nd_desc->cmd_mask)) + return -ENOTTY; + + switch (func) { + case ND_CMD_ARS_CAP: + rc = nfit_test_cmd_ars_cap(buf, buf_len); + break; + case ND_CMD_ARS_START: + rc = nfit_test_cmd_ars_start(t, ars_state, buf, + buf_len, cmd_rc); + break; + case ND_CMD_ARS_STATUS: + rc = nfit_test_cmd_ars_status(ars_state, buf, buf_len, + cmd_rc); + break; + case ND_CMD_CLEAR_ERROR: + rc = nfit_test_cmd_clear_error(t, buf, buf_len, cmd_rc); + break; + default: + return -ENOTTY; + } + } + + return rc; +} + +static DEFINE_SPINLOCK(nfit_test_lock); +static struct nfit_test *instances[NUM_NFITS]; + +static void release_nfit_res(void *data) +{ + struct nfit_test_resource *nfit_res = data; + + spin_lock(&nfit_test_lock); + list_del(&nfit_res->list); + spin_unlock(&nfit_test_lock); + + if (resource_size(&nfit_res->res) >= DIMM_SIZE) + gen_pool_free(nfit_pool, nfit_res->res.start, + resource_size(&nfit_res->res)); + vfree(nfit_res->buf); + kfree(nfit_res); +} + +static void *__test_alloc(struct nfit_test *t, size_t size, dma_addr_t *dma, + void *buf) +{ + struct device *dev = &t->pdev.dev; + struct nfit_test_resource *nfit_res = kzalloc(sizeof(*nfit_res), + GFP_KERNEL); + int rc; + + if (!buf || !nfit_res || !*dma) + goto err; + rc = devm_add_action(dev, release_nfit_res, nfit_res); + if (rc) + goto err; + INIT_LIST_HEAD(&nfit_res->list); + memset(buf, 0, size); + nfit_res->dev = dev; + nfit_res->buf = buf; + nfit_res->res.start = *dma; + nfit_res->res.end = *dma + size - 1; + nfit_res->res.name = "NFIT"; + spin_lock_init(&nfit_res->lock); + INIT_LIST_HEAD(&nfit_res->requests); + spin_lock(&nfit_test_lock); + list_add(&nfit_res->list, &t->resources); + spin_unlock(&nfit_test_lock); + + return nfit_res->buf; + err: + if (*dma && size >= DIMM_SIZE) + gen_pool_free(nfit_pool, *dma, size); + if (buf) + vfree(buf); + kfree(nfit_res); + return NULL; +} + +static void *test_alloc(struct nfit_test *t, size_t size, dma_addr_t *dma) +{ + struct genpool_data_align data = { + .align = SZ_128M, + }; + void *buf = vmalloc(size); + + if (size >= DIMM_SIZE) + *dma = gen_pool_alloc_algo(nfit_pool, size, + gen_pool_first_fit_align, &data); + else + *dma = (unsigned long) buf; + return __test_alloc(t, size, dma, buf); +} + +static struct nfit_test_resource *nfit_test_lookup(resource_size_t addr) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(instances); i++) { + struct nfit_test_resource *n, *nfit_res = NULL; + struct nfit_test *t = instances[i]; + + if (!t) + continue; + spin_lock(&nfit_test_lock); + list_for_each_entry(n, &t->resources, list) { + if (addr >= n->res.start && (addr < n->res.start + + resource_size(&n->res))) { + nfit_res = n; + break; + } else if (addr >= (unsigned long) n->buf + && (addr < (unsigned long) n->buf + + resource_size(&n->res))) { + nfit_res = n; + break; + } + } + spin_unlock(&nfit_test_lock); + if (nfit_res) + return nfit_res; + } + + return NULL; +} + +static int ars_state_init(struct device *dev, struct ars_state *ars_state) +{ + /* for testing, only store up to n records that fit within 4k */ + ars_state->ars_status = devm_kzalloc(dev, + sizeof(struct nd_cmd_ars_status) + SZ_4K, GFP_KERNEL); + if (!ars_state->ars_status) + return -ENOMEM; + spin_lock_init(&ars_state->lock); + return 0; +} + +static void put_dimms(void *data) +{ + struct nfit_test *t = data; + int i; + + for (i = 0; i < t->num_dcr; i++) + if (t->dimm_dev[i]) + device_unregister(t->dimm_dev[i]); +} + +static struct class *nfit_test_dimm; + +static int dimm_name_to_id(struct device *dev) +{ + int dimm; + + if (sscanf(dev_name(dev), "test_dimm%d", &dimm) != 1) + return -ENXIO; + return dimm; +} + +static ssize_t handle_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int dimm = dimm_name_to_id(dev); + + if (dimm < 0) + return dimm; + + return sprintf(buf, "%#x\n", handle[dimm]); +} +DEVICE_ATTR_RO(handle); + +static ssize_t fail_cmd_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int dimm = dimm_name_to_id(dev); + + if (dimm < 0) + return dimm; + + return sprintf(buf, "%#lx\n", dimm_fail_cmd_flags[dimm]); +} + +static ssize_t fail_cmd_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t size) +{ + int dimm = dimm_name_to_id(dev); + unsigned long val; + ssize_t rc; + + if (dimm < 0) + return dimm; + + rc = kstrtol(buf, 0, &val); + if (rc) + return rc; + + dimm_fail_cmd_flags[dimm] = val; + return size; +} +static DEVICE_ATTR_RW(fail_cmd); + +static ssize_t fail_cmd_code_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int dimm = dimm_name_to_id(dev); + + if (dimm < 0) + return dimm; + + return sprintf(buf, "%d\n", dimm_fail_cmd_code[dimm]); +} + +static ssize_t fail_cmd_code_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t size) +{ + int dimm = dimm_name_to_id(dev); + unsigned long val; + ssize_t rc; + + if (dimm < 0) + return dimm; + + rc = kstrtol(buf, 0, &val); + if (rc) + return rc; + + dimm_fail_cmd_code[dimm] = val; + return size; +} +static DEVICE_ATTR_RW(fail_cmd_code); + +static struct attribute *nfit_test_dimm_attributes[] = { + &dev_attr_fail_cmd.attr, + &dev_attr_fail_cmd_code.attr, + &dev_attr_handle.attr, + NULL, +}; + +static struct attribute_group nfit_test_dimm_attribute_group = { + .attrs = nfit_test_dimm_attributes, +}; + +static const struct attribute_group *nfit_test_dimm_attribute_groups[] = { + &nfit_test_dimm_attribute_group, + NULL, +}; + +static int nfit_test_dimm_init(struct nfit_test *t) +{ + int i; + + if (devm_add_action_or_reset(&t->pdev.dev, put_dimms, t)) + return -ENOMEM; + for (i = 0; i < t->num_dcr; i++) { + t->dimm_dev[i] = device_create_with_groups(nfit_test_dimm, + &t->pdev.dev, 0, NULL, + nfit_test_dimm_attribute_groups, + "test_dimm%d", i + t->dcr_idx); + if (!t->dimm_dev[i]) + return -ENOMEM; + } + return 0; +} + +static void smart_init(struct nfit_test *t) +{ + int i; + const struct nd_intel_smart_threshold smart_t_data = { + .alarm_control = ND_INTEL_SMART_SPARE_TRIP + | ND_INTEL_SMART_TEMP_TRIP, + .media_temperature = 40 * 16, + .ctrl_temperature = 30 * 16, + .spares = 5, + }; + + for (i = 0; i < t->num_dcr; i++) { + memcpy(&t->smart[i], &smart_def, sizeof(smart_def)); + memcpy(&t->smart_threshold[i], &smart_t_data, + sizeof(smart_t_data)); + } +} + +static int nfit_test0_alloc(struct nfit_test *t) +{ + size_t nfit_size = sizeof(struct acpi_nfit_system_address) * NUM_SPA + + sizeof(struct acpi_nfit_memory_map) * NUM_MEM + + sizeof(struct acpi_nfit_control_region) * NUM_DCR + + offsetof(struct acpi_nfit_control_region, + window_size) * NUM_DCR + + sizeof(struct acpi_nfit_data_region) * NUM_BDW + + (sizeof(struct acpi_nfit_flush_address) + + sizeof(u64) * NUM_HINTS) * NUM_DCR + + sizeof(struct acpi_nfit_capabilities); + int i; + + t->nfit_buf = test_alloc(t, nfit_size, &t->nfit_dma); + if (!t->nfit_buf) + return -ENOMEM; + t->nfit_size = nfit_size; + + t->spa_set[0] = test_alloc(t, SPA0_SIZE, &t->spa_set_dma[0]); + if (!t->spa_set[0]) + return -ENOMEM; + + t->spa_set[1] = test_alloc(t, SPA1_SIZE, &t->spa_set_dma[1]); + if (!t->spa_set[1]) + return -ENOMEM; + + t->spa_set[2] = test_alloc(t, SPA0_SIZE, &t->spa_set_dma[2]); + if (!t->spa_set[2]) + return -ENOMEM; + + for (i = 0; i < t->num_dcr; i++) { + t->dimm[i] = test_alloc(t, DIMM_SIZE, &t->dimm_dma[i]); + if (!t->dimm[i]) + return -ENOMEM; + + t->label[i] = test_alloc(t, LABEL_SIZE, &t->label_dma[i]); + if (!t->label[i]) + return -ENOMEM; + sprintf(t->label[i], "label%d", i); + + t->flush[i] = test_alloc(t, max(PAGE_SIZE, + sizeof(u64) * NUM_HINTS), + &t->flush_dma[i]); + if (!t->flush[i]) + return -ENOMEM; + } + + for (i = 0; i < t->num_dcr; i++) { + t->dcr[i] = test_alloc(t, LABEL_SIZE, &t->dcr_dma[i]); + if (!t->dcr[i]) + return -ENOMEM; + } + + t->_fit = test_alloc(t, sizeof(union acpi_object **), &t->_fit_dma); + if (!t->_fit) + return -ENOMEM; + + if (nfit_test_dimm_init(t)) + return -ENOMEM; + smart_init(t); + return ars_state_init(&t->pdev.dev, &t->ars_state); +} + +static int nfit_test1_alloc(struct nfit_test *t) +{ + size_t nfit_size = sizeof(struct acpi_nfit_system_address) * 2 + + sizeof(struct acpi_nfit_memory_map) * 2 + + offsetof(struct acpi_nfit_control_region, window_size) * 2; + int i; + + t->nfit_buf = test_alloc(t, nfit_size, &t->nfit_dma); + if (!t->nfit_buf) + return -ENOMEM; + t->nfit_size = nfit_size; + + t->spa_set[0] = test_alloc(t, SPA2_SIZE, &t->spa_set_dma[0]); + if (!t->spa_set[0]) + return -ENOMEM; + + for (i = 0; i < t->num_dcr; i++) { + t->label[i] = test_alloc(t, LABEL_SIZE, &t->label_dma[i]); + if (!t->label[i]) + return -ENOMEM; + sprintf(t->label[i], "label%d", i); + } + + t->spa_set[1] = test_alloc(t, SPA_VCD_SIZE, &t->spa_set_dma[1]); + if (!t->spa_set[1]) + return -ENOMEM; + + if (nfit_test_dimm_init(t)) + return -ENOMEM; + smart_init(t); + return ars_state_init(&t->pdev.dev, &t->ars_state); +} + +static void dcr_common_init(struct acpi_nfit_control_region *dcr) +{ + dcr->vendor_id = 0xabcd; + dcr->device_id = 0; + dcr->revision_id = 1; + dcr->valid_fields = 1; + dcr->manufacturing_location = 0xa; + dcr->manufacturing_date = cpu_to_be16(2016); +} + +static void nfit_test0_setup(struct nfit_test *t) +{ + const int flush_hint_size = sizeof(struct acpi_nfit_flush_address) + + (sizeof(u64) * NUM_HINTS); + struct acpi_nfit_desc *acpi_desc; + struct acpi_nfit_memory_map *memdev; + void *nfit_buf = t->nfit_buf; + struct acpi_nfit_system_address *spa; + struct acpi_nfit_control_region *dcr; + struct acpi_nfit_data_region *bdw; + struct acpi_nfit_flush_address *flush; + struct acpi_nfit_capabilities *pcap; + unsigned int offset = 0, i; + + /* + * spa0 (interleave first half of dimm0 and dimm1, note storage + * does not actually alias the related block-data-window + * regions) + */ + spa = nfit_buf; + spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; + spa->header.length = sizeof(*spa); + memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_PM), 16); + spa->range_index = 0+1; + spa->address = t->spa_set_dma[0]; + spa->length = SPA0_SIZE; + offset += spa->header.length; + + /* + * spa1 (interleave last half of the 4 DIMMS, note storage + * does not actually alias the related block-data-window + * regions) + */ + spa = nfit_buf + offset; + spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; + spa->header.length = sizeof(*spa); + memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_PM), 16); + spa->range_index = 1+1; + spa->address = t->spa_set_dma[1]; + spa->length = SPA1_SIZE; + offset += spa->header.length; + + /* spa2 (dcr0) dimm0 */ + spa = nfit_buf + offset; + spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; + spa->header.length = sizeof(*spa); + memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_DCR), 16); + spa->range_index = 2+1; + spa->address = t->dcr_dma[0]; + spa->length = DCR_SIZE; + offset += spa->header.length; + + /* spa3 (dcr1) dimm1 */ + spa = nfit_buf + offset; + spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; + spa->header.length = sizeof(*spa); + memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_DCR), 16); + spa->range_index = 3+1; + spa->address = t->dcr_dma[1]; + spa->length = DCR_SIZE; + offset += spa->header.length; + + /* spa4 (dcr2) dimm2 */ + spa = nfit_buf + offset; + spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; + spa->header.length = sizeof(*spa); + memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_DCR), 16); + spa->range_index = 4+1; + spa->address = t->dcr_dma[2]; + spa->length = DCR_SIZE; + offset += spa->header.length; + + /* spa5 (dcr3) dimm3 */ + spa = nfit_buf + offset; + spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; + spa->header.length = sizeof(*spa); + memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_DCR), 16); + spa->range_index = 5+1; + spa->address = t->dcr_dma[3]; + spa->length = DCR_SIZE; + offset += spa->header.length; + + /* spa6 (bdw for dcr0) dimm0 */ + spa = nfit_buf + offset; + spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; + spa->header.length = sizeof(*spa); + memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_BDW), 16); + spa->range_index = 6+1; + spa->address = t->dimm_dma[0]; + spa->length = DIMM_SIZE; + offset += spa->header.length; + + /* spa7 (bdw for dcr1) dimm1 */ + spa = nfit_buf + offset; + spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; + spa->header.length = sizeof(*spa); + memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_BDW), 16); + spa->range_index = 7+1; + spa->address = t->dimm_dma[1]; + spa->length = DIMM_SIZE; + offset += spa->header.length; + + /* spa8 (bdw for dcr2) dimm2 */ + spa = nfit_buf + offset; + spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; + spa->header.length = sizeof(*spa); + memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_BDW), 16); + spa->range_index = 8+1; + spa->address = t->dimm_dma[2]; + spa->length = DIMM_SIZE; + offset += spa->header.length; + + /* spa9 (bdw for dcr3) dimm3 */ + spa = nfit_buf + offset; + spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; + spa->header.length = sizeof(*spa); + memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_BDW), 16); + spa->range_index = 9+1; + spa->address = t->dimm_dma[3]; + spa->length = DIMM_SIZE; + offset += spa->header.length; + + /* mem-region0 (spa0, dimm0) */ + memdev = nfit_buf + offset; + memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP; + memdev->header.length = sizeof(*memdev); + memdev->device_handle = handle[0]; + memdev->physical_id = 0; + memdev->region_id = 0; + memdev->range_index = 0+1; + memdev->region_index = 4+1; + memdev->region_size = SPA0_SIZE/2; + memdev->region_offset = 1; + memdev->address = 0; + memdev->interleave_index = 0; + memdev->interleave_ways = 2; + offset += memdev->header.length; + + /* mem-region1 (spa0, dimm1) */ + memdev = nfit_buf + offset; + memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP; + memdev->header.length = sizeof(*memdev); + memdev->device_handle = handle[1]; + memdev->physical_id = 1; + memdev->region_id = 0; + memdev->range_index = 0+1; + memdev->region_index = 5+1; + memdev->region_size = SPA0_SIZE/2; + memdev->region_offset = (1 << 8); + memdev->address = 0; + memdev->interleave_index = 0; + memdev->interleave_ways = 2; + memdev->flags = ACPI_NFIT_MEM_HEALTH_ENABLED; + offset += memdev->header.length; + + /* mem-region2 (spa1, dimm0) */ + memdev = nfit_buf + offset; + memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP; + memdev->header.length = sizeof(*memdev); + memdev->device_handle = handle[0]; + memdev->physical_id = 0; + memdev->region_id = 1; + memdev->range_index = 1+1; + memdev->region_index = 4+1; + memdev->region_size = SPA1_SIZE/4; + memdev->region_offset = (1 << 16); + memdev->address = SPA0_SIZE/2; + memdev->interleave_index = 0; + memdev->interleave_ways = 4; + memdev->flags = ACPI_NFIT_MEM_HEALTH_ENABLED; + offset += memdev->header.length; + + /* mem-region3 (spa1, dimm1) */ + memdev = nfit_buf + offset; + memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP; + memdev->header.length = sizeof(*memdev); + memdev->device_handle = handle[1]; + memdev->physical_id = 1; + memdev->region_id = 1; + memdev->range_index = 1+1; + memdev->region_index = 5+1; + memdev->region_size = SPA1_SIZE/4; + memdev->region_offset = (1 << 24); + memdev->address = SPA0_SIZE/2; + memdev->interleave_index = 0; + memdev->interleave_ways = 4; + offset += memdev->header.length; + + /* mem-region4 (spa1, dimm2) */ + memdev = nfit_buf + offset; + memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP; + memdev->header.length = sizeof(*memdev); + memdev->device_handle = handle[2]; + memdev->physical_id = 2; + memdev->region_id = 0; + memdev->range_index = 1+1; + memdev->region_index = 6+1; + memdev->region_size = SPA1_SIZE/4; + memdev->region_offset = (1ULL << 32); + memdev->address = SPA0_SIZE/2; + memdev->interleave_index = 0; + memdev->interleave_ways = 4; + memdev->flags = ACPI_NFIT_MEM_HEALTH_ENABLED; + offset += memdev->header.length; + + /* mem-region5 (spa1, dimm3) */ + memdev = nfit_buf + offset; + memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP; + memdev->header.length = sizeof(*memdev); + memdev->device_handle = handle[3]; + memdev->physical_id = 3; + memdev->region_id = 0; + memdev->range_index = 1+1; + memdev->region_index = 7+1; + memdev->region_size = SPA1_SIZE/4; + memdev->region_offset = (1ULL << 40); + memdev->address = SPA0_SIZE/2; + memdev->interleave_index = 0; + memdev->interleave_ways = 4; + offset += memdev->header.length; + + /* mem-region6 (spa/dcr0, dimm0) */ + memdev = nfit_buf + offset; + memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP; + memdev->header.length = sizeof(*memdev); + memdev->device_handle = handle[0]; + memdev->physical_id = 0; + memdev->region_id = 0; + memdev->range_index = 2+1; + memdev->region_index = 0+1; + memdev->region_size = 0; + memdev->region_offset = 0; + memdev->address = 0; + memdev->interleave_index = 0; + memdev->interleave_ways = 1; + offset += memdev->header.length; + + /* mem-region7 (spa/dcr1, dimm1) */ + memdev = nfit_buf + offset; + memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP; + memdev->header.length = sizeof(*memdev); + memdev->device_handle = handle[1]; + memdev->physical_id = 1; + memdev->region_id = 0; + memdev->range_index = 3+1; + memdev->region_index = 1+1; + memdev->region_size = 0; + memdev->region_offset = 0; + memdev->address = 0; + memdev->interleave_index = 0; + memdev->interleave_ways = 1; + offset += memdev->header.length; + + /* mem-region8 (spa/dcr2, dimm2) */ + memdev = nfit_buf + offset; + memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP; + memdev->header.length = sizeof(*memdev); + memdev->device_handle = handle[2]; + memdev->physical_id = 2; + memdev->region_id = 0; + memdev->range_index = 4+1; + memdev->region_index = 2+1; + memdev->region_size = 0; + memdev->region_offset = 0; + memdev->address = 0; + memdev->interleave_index = 0; + memdev->interleave_ways = 1; + offset += memdev->header.length; + + /* mem-region9 (spa/dcr3, dimm3) */ + memdev = nfit_buf + offset; + memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP; + memdev->header.length = sizeof(*memdev); + memdev->device_handle = handle[3]; + memdev->physical_id = 3; + memdev->region_id = 0; + memdev->range_index = 5+1; + memdev->region_index = 3+1; + memdev->region_size = 0; + memdev->region_offset = 0; + memdev->address = 0; + memdev->interleave_index = 0; + memdev->interleave_ways = 1; + offset += memdev->header.length; + + /* mem-region10 (spa/bdw0, dimm0) */ + memdev = nfit_buf + offset; + memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP; + memdev->header.length = sizeof(*memdev); + memdev->device_handle = handle[0]; + memdev->physical_id = 0; + memdev->region_id = 0; + memdev->range_index = 6+1; + memdev->region_index = 0+1; + memdev->region_size = 0; + memdev->region_offset = 0; + memdev->address = 0; + memdev->interleave_index = 0; + memdev->interleave_ways = 1; + offset += memdev->header.length; + + /* mem-region11 (spa/bdw1, dimm1) */ + memdev = nfit_buf + offset; + memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP; + memdev->header.length = sizeof(*memdev); + memdev->device_handle = handle[1]; + memdev->physical_id = 1; + memdev->region_id = 0; + memdev->range_index = 7+1; + memdev->region_index = 1+1; + memdev->region_size = 0; + memdev->region_offset = 0; + memdev->address = 0; + memdev->interleave_index = 0; + memdev->interleave_ways = 1; + offset += memdev->header.length; + + /* mem-region12 (spa/bdw2, dimm2) */ + memdev = nfit_buf + offset; + memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP; + memdev->header.length = sizeof(*memdev); + memdev->device_handle = handle[2]; + memdev->physical_id = 2; + memdev->region_id = 0; + memdev->range_index = 8+1; + memdev->region_index = 2+1; + memdev->region_size = 0; + memdev->region_offset = 0; + memdev->address = 0; + memdev->interleave_index = 0; + memdev->interleave_ways = 1; + offset += memdev->header.length; + + /* mem-region13 (spa/dcr3, dimm3) */ + memdev = nfit_buf + offset; + memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP; + memdev->header.length = sizeof(*memdev); + memdev->device_handle = handle[3]; + memdev->physical_id = 3; + memdev->region_id = 0; + memdev->range_index = 9+1; + memdev->region_index = 3+1; + memdev->region_size = 0; + memdev->region_offset = 0; + memdev->address = 0; + memdev->interleave_index = 0; + memdev->interleave_ways = 1; + memdev->flags = ACPI_NFIT_MEM_HEALTH_ENABLED; + offset += memdev->header.length; + + /* dcr-descriptor0: blk */ + dcr = nfit_buf + offset; + dcr->header.type = ACPI_NFIT_TYPE_CONTROL_REGION; + dcr->header.length = sizeof(*dcr); + dcr->region_index = 0+1; + dcr_common_init(dcr); + dcr->serial_number = ~handle[0]; + dcr->code = NFIT_FIC_BLK; + dcr->windows = 1; + dcr->window_size = DCR_SIZE; + dcr->command_offset = 0; + dcr->command_size = 8; + dcr->status_offset = 8; + dcr->status_size = 4; + offset += dcr->header.length; + + /* dcr-descriptor1: blk */ + dcr = nfit_buf + offset; + dcr->header.type = ACPI_NFIT_TYPE_CONTROL_REGION; + dcr->header.length = sizeof(*dcr); + dcr->region_index = 1+1; + dcr_common_init(dcr); + dcr->serial_number = ~handle[1]; + dcr->code = NFIT_FIC_BLK; + dcr->windows = 1; + dcr->window_size = DCR_SIZE; + dcr->command_offset = 0; + dcr->command_size = 8; + dcr->status_offset = 8; + dcr->status_size = 4; + offset += dcr->header.length; + + /* dcr-descriptor2: blk */ + dcr = nfit_buf + offset; + dcr->header.type = ACPI_NFIT_TYPE_CONTROL_REGION; + dcr->header.length = sizeof(*dcr); + dcr->region_index = 2+1; + dcr_common_init(dcr); + dcr->serial_number = ~handle[2]; + dcr->code = NFIT_FIC_BLK; + dcr->windows = 1; + dcr->window_size = DCR_SIZE; + dcr->command_offset = 0; + dcr->command_size = 8; + dcr->status_offset = 8; + dcr->status_size = 4; + offset += dcr->header.length; + + /* dcr-descriptor3: blk */ + dcr = nfit_buf + offset; + dcr->header.type = ACPI_NFIT_TYPE_CONTROL_REGION; + dcr->header.length = sizeof(*dcr); + dcr->region_index = 3+1; + dcr_common_init(dcr); + dcr->serial_number = ~handle[3]; + dcr->code = NFIT_FIC_BLK; + dcr->windows = 1; + dcr->window_size = DCR_SIZE; + dcr->command_offset = 0; + dcr->command_size = 8; + dcr->status_offset = 8; + dcr->status_size = 4; + offset += dcr->header.length; + + /* dcr-descriptor0: pmem */ + dcr = nfit_buf + offset; + dcr->header.type = ACPI_NFIT_TYPE_CONTROL_REGION; + dcr->header.length = offsetof(struct acpi_nfit_control_region, + window_size); + dcr->region_index = 4+1; + dcr_common_init(dcr); + dcr->serial_number = ~handle[0]; + dcr->code = NFIT_FIC_BYTEN; + dcr->windows = 0; + offset += dcr->header.length; + + /* dcr-descriptor1: pmem */ + dcr = nfit_buf + offset; + dcr->header.type = ACPI_NFIT_TYPE_CONTROL_REGION; + dcr->header.length = offsetof(struct acpi_nfit_control_region, + window_size); + dcr->region_index = 5+1; + dcr_common_init(dcr); + dcr->serial_number = ~handle[1]; + dcr->code = NFIT_FIC_BYTEN; + dcr->windows = 0; + offset += dcr->header.length; + + /* dcr-descriptor2: pmem */ + dcr = nfit_buf + offset; + dcr->header.type = ACPI_NFIT_TYPE_CONTROL_REGION; + dcr->header.length = offsetof(struct acpi_nfit_control_region, + window_size); + dcr->region_index = 6+1; + dcr_common_init(dcr); + dcr->serial_number = ~handle[2]; + dcr->code = NFIT_FIC_BYTEN; + dcr->windows = 0; + offset += dcr->header.length; + + /* dcr-descriptor3: pmem */ + dcr = nfit_buf + offset; + dcr->header.type = ACPI_NFIT_TYPE_CONTROL_REGION; + dcr->header.length = offsetof(struct acpi_nfit_control_region, + window_size); + dcr->region_index = 7+1; + dcr_common_init(dcr); + dcr->serial_number = ~handle[3]; + dcr->code = NFIT_FIC_BYTEN; + dcr->windows = 0; + offset += dcr->header.length; + + /* bdw0 (spa/dcr0, dimm0) */ + bdw = nfit_buf + offset; + bdw->header.type = ACPI_NFIT_TYPE_DATA_REGION; + bdw->header.length = sizeof(*bdw); + bdw->region_index = 0+1; + bdw->windows = 1; + bdw->offset = 0; + bdw->size = BDW_SIZE; + bdw->capacity = DIMM_SIZE; + bdw->start_address = 0; + offset += bdw->header.length; + + /* bdw1 (spa/dcr1, dimm1) */ + bdw = nfit_buf + offset; + bdw->header.type = ACPI_NFIT_TYPE_DATA_REGION; + bdw->header.length = sizeof(*bdw); + bdw->region_index = 1+1; + bdw->windows = 1; + bdw->offset = 0; + bdw->size = BDW_SIZE; + bdw->capacity = DIMM_SIZE; + bdw->start_address = 0; + offset += bdw->header.length; + + /* bdw2 (spa/dcr2, dimm2) */ + bdw = nfit_buf + offset; + bdw->header.type = ACPI_NFIT_TYPE_DATA_REGION; + bdw->header.length = sizeof(*bdw); + bdw->region_index = 2+1; + bdw->windows = 1; + bdw->offset = 0; + bdw->size = BDW_SIZE; + bdw->capacity = DIMM_SIZE; + bdw->start_address = 0; + offset += bdw->header.length; + + /* bdw3 (spa/dcr3, dimm3) */ + bdw = nfit_buf + offset; + bdw->header.type = ACPI_NFIT_TYPE_DATA_REGION; + bdw->header.length = sizeof(*bdw); + bdw->region_index = 3+1; + bdw->windows = 1; + bdw->offset = 0; + bdw->size = BDW_SIZE; + bdw->capacity = DIMM_SIZE; + bdw->start_address = 0; + offset += bdw->header.length; + + /* flush0 (dimm0) */ + flush = nfit_buf + offset; + flush->header.type = ACPI_NFIT_TYPE_FLUSH_ADDRESS; + flush->header.length = flush_hint_size; + flush->device_handle = handle[0]; + flush->hint_count = NUM_HINTS; + for (i = 0; i < NUM_HINTS; i++) + flush->hint_address[i] = t->flush_dma[0] + i * sizeof(u64); + offset += flush->header.length; + + /* flush1 (dimm1) */ + flush = nfit_buf + offset; + flush->header.type = ACPI_NFIT_TYPE_FLUSH_ADDRESS; + flush->header.length = flush_hint_size; + flush->device_handle = handle[1]; + flush->hint_count = NUM_HINTS; + for (i = 0; i < NUM_HINTS; i++) + flush->hint_address[i] = t->flush_dma[1] + i * sizeof(u64); + offset += flush->header.length; + + /* flush2 (dimm2) */ + flush = nfit_buf + offset; + flush->header.type = ACPI_NFIT_TYPE_FLUSH_ADDRESS; + flush->header.length = flush_hint_size; + flush->device_handle = handle[2]; + flush->hint_count = NUM_HINTS; + for (i = 0; i < NUM_HINTS; i++) + flush->hint_address[i] = t->flush_dma[2] + i * sizeof(u64); + offset += flush->header.length; + + /* flush3 (dimm3) */ + flush = nfit_buf + offset; + flush->header.type = ACPI_NFIT_TYPE_FLUSH_ADDRESS; + flush->header.length = flush_hint_size; + flush->device_handle = handle[3]; + flush->hint_count = NUM_HINTS; + for (i = 0; i < NUM_HINTS; i++) + flush->hint_address[i] = t->flush_dma[3] + i * sizeof(u64); + offset += flush->header.length; + + /* platform capabilities */ + pcap = nfit_buf + offset; + pcap->header.type = ACPI_NFIT_TYPE_CAPABILITIES; + pcap->header.length = sizeof(*pcap); + pcap->highest_capability = 1; + pcap->capabilities = ACPI_NFIT_CAPABILITY_MEM_FLUSH; + offset += pcap->header.length; + + if (t->setup_hotplug) { + /* dcr-descriptor4: blk */ + dcr = nfit_buf + offset; + dcr->header.type = ACPI_NFIT_TYPE_CONTROL_REGION; + dcr->header.length = sizeof(*dcr); + dcr->region_index = 8+1; + dcr_common_init(dcr); + dcr->serial_number = ~handle[4]; + dcr->code = NFIT_FIC_BLK; + dcr->windows = 1; + dcr->window_size = DCR_SIZE; + dcr->command_offset = 0; + dcr->command_size = 8; + dcr->status_offset = 8; + dcr->status_size = 4; + offset += dcr->header.length; + + /* dcr-descriptor4: pmem */ + dcr = nfit_buf + offset; + dcr->header.type = ACPI_NFIT_TYPE_CONTROL_REGION; + dcr->header.length = offsetof(struct acpi_nfit_control_region, + window_size); + dcr->region_index = 9+1; + dcr_common_init(dcr); + dcr->serial_number = ~handle[4]; + dcr->code = NFIT_FIC_BYTEN; + dcr->windows = 0; + offset += dcr->header.length; + + /* bdw4 (spa/dcr4, dimm4) */ + bdw = nfit_buf + offset; + bdw->header.type = ACPI_NFIT_TYPE_DATA_REGION; + bdw->header.length = sizeof(*bdw); + bdw->region_index = 8+1; + bdw->windows = 1; + bdw->offset = 0; + bdw->size = BDW_SIZE; + bdw->capacity = DIMM_SIZE; + bdw->start_address = 0; + offset += bdw->header.length; + + /* spa10 (dcr4) dimm4 */ + spa = nfit_buf + offset; + spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; + spa->header.length = sizeof(*spa); + memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_DCR), 16); + spa->range_index = 10+1; + spa->address = t->dcr_dma[4]; + spa->length = DCR_SIZE; + offset += spa->header.length; + + /* + * spa11 (single-dimm interleave for hotplug, note storage + * does not actually alias the related block-data-window + * regions) + */ + spa = nfit_buf + offset; + spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; + spa->header.length = sizeof(*spa); + memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_PM), 16); + spa->range_index = 11+1; + spa->address = t->spa_set_dma[2]; + spa->length = SPA0_SIZE; + offset += spa->header.length; + + /* spa12 (bdw for dcr4) dimm4 */ + spa = nfit_buf + offset; + spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; + spa->header.length = sizeof(*spa); + memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_BDW), 16); + spa->range_index = 12+1; + spa->address = t->dimm_dma[4]; + spa->length = DIMM_SIZE; + offset += spa->header.length; + + /* mem-region14 (spa/dcr4, dimm4) */ + memdev = nfit_buf + offset; + memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP; + memdev->header.length = sizeof(*memdev); + memdev->device_handle = handle[4]; + memdev->physical_id = 4; + memdev->region_id = 0; + memdev->range_index = 10+1; + memdev->region_index = 8+1; + memdev->region_size = 0; + memdev->region_offset = 0; + memdev->address = 0; + memdev->interleave_index = 0; + memdev->interleave_ways = 1; + offset += memdev->header.length; + + /* mem-region15 (spa11, dimm4) */ + memdev = nfit_buf + offset; + memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP; + memdev->header.length = sizeof(*memdev); + memdev->device_handle = handle[4]; + memdev->physical_id = 4; + memdev->region_id = 0; + memdev->range_index = 11+1; + memdev->region_index = 9+1; + memdev->region_size = SPA0_SIZE; + memdev->region_offset = (1ULL << 48); + memdev->address = 0; + memdev->interleave_index = 0; + memdev->interleave_ways = 1; + memdev->flags = ACPI_NFIT_MEM_HEALTH_ENABLED; + offset += memdev->header.length; + + /* mem-region16 (spa/bdw4, dimm4) */ + memdev = nfit_buf + offset; + memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP; + memdev->header.length = sizeof(*memdev); + memdev->device_handle = handle[4]; + memdev->physical_id = 4; + memdev->region_id = 0; + memdev->range_index = 12+1; + memdev->region_index = 8+1; + memdev->region_size = 0; + memdev->region_offset = 0; + memdev->address = 0; + memdev->interleave_index = 0; + memdev->interleave_ways = 1; + offset += memdev->header.length; + + /* flush3 (dimm4) */ + flush = nfit_buf + offset; + flush->header.type = ACPI_NFIT_TYPE_FLUSH_ADDRESS; + flush->header.length = flush_hint_size; + flush->device_handle = handle[4]; + flush->hint_count = NUM_HINTS; + for (i = 0; i < NUM_HINTS; i++) + flush->hint_address[i] = t->flush_dma[4] + + i * sizeof(u64); + offset += flush->header.length; + + /* sanity check to make sure we've filled the buffer */ + WARN_ON(offset != t->nfit_size); + } + + t->nfit_filled = offset; + + post_ars_status(&t->ars_state, &t->badrange, t->spa_set_dma[0], + SPA0_SIZE); + + acpi_desc = &t->acpi_desc; + set_bit(ND_CMD_GET_CONFIG_SIZE, &acpi_desc->dimm_cmd_force_en); + set_bit(ND_CMD_GET_CONFIG_DATA, &acpi_desc->dimm_cmd_force_en); + set_bit(ND_CMD_SET_CONFIG_DATA, &acpi_desc->dimm_cmd_force_en); + set_bit(ND_INTEL_SMART, &acpi_desc->dimm_cmd_force_en); + set_bit(ND_INTEL_SMART_THRESHOLD, &acpi_desc->dimm_cmd_force_en); + set_bit(ND_INTEL_SMART_SET_THRESHOLD, &acpi_desc->dimm_cmd_force_en); + set_bit(ND_INTEL_SMART_INJECT, &acpi_desc->dimm_cmd_force_en); + set_bit(ND_CMD_ARS_CAP, &acpi_desc->bus_cmd_force_en); + set_bit(ND_CMD_ARS_START, &acpi_desc->bus_cmd_force_en); + set_bit(ND_CMD_ARS_STATUS, &acpi_desc->bus_cmd_force_en); + set_bit(ND_CMD_CLEAR_ERROR, &acpi_desc->bus_cmd_force_en); + set_bit(ND_CMD_CALL, &acpi_desc->bus_cmd_force_en); + set_bit(NFIT_CMD_TRANSLATE_SPA, &acpi_desc->bus_nfit_cmd_force_en); + set_bit(NFIT_CMD_ARS_INJECT_SET, &acpi_desc->bus_nfit_cmd_force_en); + set_bit(NFIT_CMD_ARS_INJECT_CLEAR, &acpi_desc->bus_nfit_cmd_force_en); + set_bit(NFIT_CMD_ARS_INJECT_GET, &acpi_desc->bus_nfit_cmd_force_en); + set_bit(ND_INTEL_FW_GET_INFO, &acpi_desc->dimm_cmd_force_en); + set_bit(ND_INTEL_FW_START_UPDATE, &acpi_desc->dimm_cmd_force_en); + set_bit(ND_INTEL_FW_SEND_DATA, &acpi_desc->dimm_cmd_force_en); + set_bit(ND_INTEL_FW_FINISH_UPDATE, &acpi_desc->dimm_cmd_force_en); + set_bit(ND_INTEL_FW_FINISH_QUERY, &acpi_desc->dimm_cmd_force_en); + set_bit(ND_INTEL_ENABLE_LSS_STATUS, &acpi_desc->dimm_cmd_force_en); +} + +static void nfit_test1_setup(struct nfit_test *t) +{ + size_t offset; + void *nfit_buf = t->nfit_buf; + struct acpi_nfit_memory_map *memdev; + struct acpi_nfit_control_region *dcr; + struct acpi_nfit_system_address *spa; + struct acpi_nfit_desc *acpi_desc; + + offset = 0; + /* spa0 (flat range with no bdw aliasing) */ + spa = nfit_buf + offset; + spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; + spa->header.length = sizeof(*spa); + memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_PM), 16); + spa->range_index = 0+1; + spa->address = t->spa_set_dma[0]; + spa->length = SPA2_SIZE; + offset += spa->header.length; + + /* virtual cd region */ + spa = nfit_buf + offset; + spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS; + spa->header.length = sizeof(*spa); + memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_VCD), 16); + spa->range_index = 0; + spa->address = t->spa_set_dma[1]; + spa->length = SPA_VCD_SIZE; + offset += spa->header.length; + + /* mem-region0 (spa0, dimm0) */ + memdev = nfit_buf + offset; + memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP; + memdev->header.length = sizeof(*memdev); + memdev->device_handle = handle[5]; + memdev->physical_id = 0; + memdev->region_id = 0; + memdev->range_index = 0+1; + memdev->region_index = 0+1; + memdev->region_size = SPA2_SIZE; + memdev->region_offset = 0; + memdev->address = 0; + memdev->interleave_index = 0; + memdev->interleave_ways = 1; + memdev->flags = ACPI_NFIT_MEM_SAVE_FAILED | ACPI_NFIT_MEM_RESTORE_FAILED + | ACPI_NFIT_MEM_FLUSH_FAILED | ACPI_NFIT_MEM_HEALTH_OBSERVED + | ACPI_NFIT_MEM_NOT_ARMED; + offset += memdev->header.length; + + /* dcr-descriptor0 */ + dcr = nfit_buf + offset; + dcr->header.type = ACPI_NFIT_TYPE_CONTROL_REGION; + dcr->header.length = offsetof(struct acpi_nfit_control_region, + window_size); + dcr->region_index = 0+1; + dcr_common_init(dcr); + dcr->serial_number = ~handle[5]; + dcr->code = NFIT_FIC_BYTE; + dcr->windows = 0; + offset += dcr->header.length; + + memdev = nfit_buf + offset; + memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP; + memdev->header.length = sizeof(*memdev); + memdev->device_handle = handle[6]; + memdev->physical_id = 0; + memdev->region_id = 0; + memdev->range_index = 0; + memdev->region_index = 0+2; + memdev->region_size = SPA2_SIZE; + memdev->region_offset = 0; + memdev->address = 0; + memdev->interleave_index = 0; + memdev->interleave_ways = 1; + memdev->flags = ACPI_NFIT_MEM_MAP_FAILED; + offset += memdev->header.length; + + /* dcr-descriptor1 */ + dcr = nfit_buf + offset; + dcr->header.type = ACPI_NFIT_TYPE_CONTROL_REGION; + dcr->header.length = offsetof(struct acpi_nfit_control_region, + window_size); + dcr->region_index = 0+2; + dcr_common_init(dcr); + dcr->serial_number = ~handle[6]; + dcr->code = NFIT_FIC_BYTE; + dcr->windows = 0; + offset += dcr->header.length; + + /* sanity check to make sure we've filled the buffer */ + WARN_ON(offset != t->nfit_size); + + t->nfit_filled = offset; + + post_ars_status(&t->ars_state, &t->badrange, t->spa_set_dma[0], + SPA2_SIZE); + + acpi_desc = &t->acpi_desc; + set_bit(ND_CMD_ARS_CAP, &acpi_desc->bus_cmd_force_en); + set_bit(ND_CMD_ARS_START, &acpi_desc->bus_cmd_force_en); + set_bit(ND_CMD_ARS_STATUS, &acpi_desc->bus_cmd_force_en); + set_bit(ND_CMD_CLEAR_ERROR, &acpi_desc->bus_cmd_force_en); + set_bit(ND_INTEL_ENABLE_LSS_STATUS, &acpi_desc->dimm_cmd_force_en); + set_bit(ND_CMD_GET_CONFIG_SIZE, &acpi_desc->dimm_cmd_force_en); + set_bit(ND_CMD_GET_CONFIG_DATA, &acpi_desc->dimm_cmd_force_en); + set_bit(ND_CMD_SET_CONFIG_DATA, &acpi_desc->dimm_cmd_force_en); +} + +static int nfit_test_blk_do_io(struct nd_blk_region *ndbr, resource_size_t dpa, + void *iobuf, u64 len, int rw) +{ + struct nfit_blk *nfit_blk = ndbr->blk_provider_data; + struct nfit_blk_mmio *mmio = &nfit_blk->mmio[BDW]; + struct nd_region *nd_region = &ndbr->nd_region; + unsigned int lane; + + lane = nd_region_acquire_lane(nd_region); + if (rw) + memcpy(mmio->addr.base + dpa, iobuf, len); + else { + memcpy(iobuf, mmio->addr.base + dpa, len); + + /* give us some some coverage of the arch_invalidate_pmem() API */ + arch_invalidate_pmem(mmio->addr.base + dpa, len); + } + nd_region_release_lane(nd_region, lane); + + return 0; +} + +static unsigned long nfit_ctl_handle; + +union acpi_object *result; + +static union acpi_object *nfit_test_evaluate_dsm(acpi_handle handle, + const guid_t *guid, u64 rev, u64 func, union acpi_object *argv4) +{ + if (handle != &nfit_ctl_handle) + return ERR_PTR(-ENXIO); + + return result; +} + +static int setup_result(void *buf, size_t size) +{ + result = kmalloc(sizeof(union acpi_object) + size, GFP_KERNEL); + if (!result) + return -ENOMEM; + result->package.type = ACPI_TYPE_BUFFER, + result->buffer.pointer = (void *) (result + 1); + result->buffer.length = size; + memcpy(result->buffer.pointer, buf, size); + memset(buf, 0, size); + return 0; +} + +static int nfit_ctl_test(struct device *dev) +{ + int rc, cmd_rc; + struct nvdimm *nvdimm; + struct acpi_device *adev; + struct nfit_mem *nfit_mem; + struct nd_ars_record *record; + struct acpi_nfit_desc *acpi_desc; + const u64 test_val = 0x0123456789abcdefULL; + unsigned long mask, cmd_size, offset; + union { + struct nd_cmd_get_config_size cfg_size; + struct nd_cmd_clear_error clear_err; + struct nd_cmd_ars_status ars_stat; + struct nd_cmd_ars_cap ars_cap; + char buf[sizeof(struct nd_cmd_ars_status) + + sizeof(struct nd_ars_record)]; + } cmds; + + adev = devm_kzalloc(dev, sizeof(*adev), GFP_KERNEL); + if (!adev) + return -ENOMEM; + *adev = (struct acpi_device) { + .handle = &nfit_ctl_handle, + .dev = { + .init_name = "test-adev", + }, + }; + + acpi_desc = devm_kzalloc(dev, sizeof(*acpi_desc), GFP_KERNEL); + if (!acpi_desc) + return -ENOMEM; + *acpi_desc = (struct acpi_nfit_desc) { + .nd_desc = { + .cmd_mask = 1UL << ND_CMD_ARS_CAP + | 1UL << ND_CMD_ARS_START + | 1UL << ND_CMD_ARS_STATUS + | 1UL << ND_CMD_CLEAR_ERROR + | 1UL << ND_CMD_CALL, + .module = THIS_MODULE, + .provider_name = "ACPI.NFIT", + .ndctl = acpi_nfit_ctl, + .bus_dsm_mask = 1UL << NFIT_CMD_TRANSLATE_SPA + | 1UL << NFIT_CMD_ARS_INJECT_SET + | 1UL << NFIT_CMD_ARS_INJECT_CLEAR + | 1UL << NFIT_CMD_ARS_INJECT_GET, + }, + .dev = &adev->dev, + }; + + nfit_mem = devm_kzalloc(dev, sizeof(*nfit_mem), GFP_KERNEL); + if (!nfit_mem) + return -ENOMEM; + + mask = 1UL << ND_CMD_SMART | 1UL << ND_CMD_SMART_THRESHOLD + | 1UL << ND_CMD_DIMM_FLAGS | 1UL << ND_CMD_GET_CONFIG_SIZE + | 1UL << ND_CMD_GET_CONFIG_DATA | 1UL << ND_CMD_SET_CONFIG_DATA + | 1UL << ND_CMD_VENDOR; + *nfit_mem = (struct nfit_mem) { + .adev = adev, + .family = NVDIMM_FAMILY_INTEL, + .dsm_mask = mask, + }; + + nvdimm = devm_kzalloc(dev, sizeof(*nvdimm), GFP_KERNEL); + if (!nvdimm) + return -ENOMEM; + *nvdimm = (struct nvdimm) { + .provider_data = nfit_mem, + .cmd_mask = mask, + .dev = { + .init_name = "test-dimm", + }, + }; + + + /* basic checkout of a typical 'get config size' command */ + cmd_size = sizeof(cmds.cfg_size); + cmds.cfg_size = (struct nd_cmd_get_config_size) { + .status = 0, + .config_size = SZ_128K, + .max_xfer = SZ_4K, + }; + rc = setup_result(cmds.buf, cmd_size); + if (rc) + return rc; + rc = acpi_nfit_ctl(&acpi_desc->nd_desc, nvdimm, ND_CMD_GET_CONFIG_SIZE, + cmds.buf, cmd_size, &cmd_rc); + + if (rc < 0 || cmd_rc || cmds.cfg_size.status != 0 + || cmds.cfg_size.config_size != SZ_128K + || cmds.cfg_size.max_xfer != SZ_4K) { + dev_dbg(dev, "%s: failed at: %d rc: %d cmd_rc: %d\n", + __func__, __LINE__, rc, cmd_rc); + return -EIO; + } + + + /* test ars_status with zero output */ + cmd_size = offsetof(struct nd_cmd_ars_status, address); + cmds.ars_stat = (struct nd_cmd_ars_status) { + .out_length = 0, + }; + rc = setup_result(cmds.buf, cmd_size); + if (rc) + return rc; + rc = acpi_nfit_ctl(&acpi_desc->nd_desc, NULL, ND_CMD_ARS_STATUS, + cmds.buf, cmd_size, &cmd_rc); + + if (rc < 0 || cmd_rc) { + dev_dbg(dev, "%s: failed at: %d rc: %d cmd_rc: %d\n", + __func__, __LINE__, rc, cmd_rc); + return -EIO; + } + + + /* test ars_cap with benign extended status */ + cmd_size = sizeof(cmds.ars_cap); + cmds.ars_cap = (struct nd_cmd_ars_cap) { + .status = ND_ARS_PERSISTENT << 16, + }; + offset = offsetof(struct nd_cmd_ars_cap, status); + rc = setup_result(cmds.buf + offset, cmd_size - offset); + if (rc) + return rc; + rc = acpi_nfit_ctl(&acpi_desc->nd_desc, NULL, ND_CMD_ARS_CAP, + cmds.buf, cmd_size, &cmd_rc); + + if (rc < 0 || cmd_rc) { + dev_dbg(dev, "%s: failed at: %d rc: %d cmd_rc: %d\n", + __func__, __LINE__, rc, cmd_rc); + return -EIO; + } + + + /* test ars_status with 'status' trimmed from 'out_length' */ + cmd_size = sizeof(cmds.ars_stat) + sizeof(struct nd_ars_record); + cmds.ars_stat = (struct nd_cmd_ars_status) { + .out_length = cmd_size - 4, + }; + record = &cmds.ars_stat.records[0]; + *record = (struct nd_ars_record) { + .length = test_val, + }; + rc = setup_result(cmds.buf, cmd_size); + if (rc) + return rc; + rc = acpi_nfit_ctl(&acpi_desc->nd_desc, NULL, ND_CMD_ARS_STATUS, + cmds.buf, cmd_size, &cmd_rc); + + if (rc < 0 || cmd_rc || record->length != test_val) { + dev_dbg(dev, "%s: failed at: %d rc: %d cmd_rc: %d\n", + __func__, __LINE__, rc, cmd_rc); + return -EIO; + } + + + /* test ars_status with 'Output (Size)' including 'status' */ + cmd_size = sizeof(cmds.ars_stat) + sizeof(struct nd_ars_record); + cmds.ars_stat = (struct nd_cmd_ars_status) { + .out_length = cmd_size, + }; + record = &cmds.ars_stat.records[0]; + *record = (struct nd_ars_record) { + .length = test_val, + }; + rc = setup_result(cmds.buf, cmd_size); + if (rc) + return rc; + rc = acpi_nfit_ctl(&acpi_desc->nd_desc, NULL, ND_CMD_ARS_STATUS, + cmds.buf, cmd_size, &cmd_rc); + + if (rc < 0 || cmd_rc || record->length != test_val) { + dev_dbg(dev, "%s: failed at: %d rc: %d cmd_rc: %d\n", + __func__, __LINE__, rc, cmd_rc); + return -EIO; + } + + + /* test extended status for get_config_size results in failure */ + cmd_size = sizeof(cmds.cfg_size); + cmds.cfg_size = (struct nd_cmd_get_config_size) { + .status = 1 << 16, + }; + rc = setup_result(cmds.buf, cmd_size); + if (rc) + return rc; + rc = acpi_nfit_ctl(&acpi_desc->nd_desc, nvdimm, ND_CMD_GET_CONFIG_SIZE, + cmds.buf, cmd_size, &cmd_rc); + + if (rc < 0 || cmd_rc >= 0) { + dev_dbg(dev, "%s: failed at: %d rc: %d cmd_rc: %d\n", + __func__, __LINE__, rc, cmd_rc); + return -EIO; + } + + /* test clear error */ + cmd_size = sizeof(cmds.clear_err); + cmds.clear_err = (struct nd_cmd_clear_error) { + .length = 512, + .cleared = 512, + }; + rc = setup_result(cmds.buf, cmd_size); + if (rc) + return rc; + rc = acpi_nfit_ctl(&acpi_desc->nd_desc, NULL, ND_CMD_CLEAR_ERROR, + cmds.buf, cmd_size, &cmd_rc); + if (rc < 0 || cmd_rc) { + dev_dbg(dev, "%s: failed at: %d rc: %d cmd_rc: %d\n", + __func__, __LINE__, rc, cmd_rc); + return -EIO; + } + + return 0; +} + +static int nfit_test_probe(struct platform_device *pdev) +{ + struct nvdimm_bus_descriptor *nd_desc; + struct acpi_nfit_desc *acpi_desc; + struct device *dev = &pdev->dev; + struct nfit_test *nfit_test; + struct nfit_mem *nfit_mem; + union acpi_object *obj; + int rc; + + if (strcmp(dev_name(&pdev->dev), "nfit_test.0") == 0) { + rc = nfit_ctl_test(&pdev->dev); + if (rc) + return rc; + } + + nfit_test = to_nfit_test(&pdev->dev); + + /* common alloc */ + if (nfit_test->num_dcr) { + int num = nfit_test->num_dcr; + + nfit_test->dimm = devm_kcalloc(dev, num, sizeof(void *), + GFP_KERNEL); + nfit_test->dimm_dma = devm_kcalloc(dev, num, sizeof(dma_addr_t), + GFP_KERNEL); + nfit_test->flush = devm_kcalloc(dev, num, sizeof(void *), + GFP_KERNEL); + nfit_test->flush_dma = devm_kcalloc(dev, num, sizeof(dma_addr_t), + GFP_KERNEL); + nfit_test->label = devm_kcalloc(dev, num, sizeof(void *), + GFP_KERNEL); + nfit_test->label_dma = devm_kcalloc(dev, num, + sizeof(dma_addr_t), GFP_KERNEL); + nfit_test->dcr = devm_kcalloc(dev, num, + sizeof(struct nfit_test_dcr *), GFP_KERNEL); + nfit_test->dcr_dma = devm_kcalloc(dev, num, + sizeof(dma_addr_t), GFP_KERNEL); + nfit_test->smart = devm_kcalloc(dev, num, + sizeof(struct nd_intel_smart), GFP_KERNEL); + nfit_test->smart_threshold = devm_kcalloc(dev, num, + sizeof(struct nd_intel_smart_threshold), + GFP_KERNEL); + nfit_test->fw = devm_kcalloc(dev, num, + sizeof(struct nfit_test_fw), GFP_KERNEL); + if (nfit_test->dimm && nfit_test->dimm_dma && nfit_test->label + && nfit_test->label_dma && nfit_test->dcr + && nfit_test->dcr_dma && nfit_test->flush + && nfit_test->flush_dma + && nfit_test->fw) + /* pass */; + else + return -ENOMEM; + } + + if (nfit_test->num_pm) { + int num = nfit_test->num_pm; + + nfit_test->spa_set = devm_kcalloc(dev, num, sizeof(void *), + GFP_KERNEL); + nfit_test->spa_set_dma = devm_kcalloc(dev, num, + sizeof(dma_addr_t), GFP_KERNEL); + if (nfit_test->spa_set && nfit_test->spa_set_dma) + /* pass */; + else + return -ENOMEM; + } + + /* per-nfit specific alloc */ + if (nfit_test->alloc(nfit_test)) + return -ENOMEM; + + nfit_test->setup(nfit_test); + acpi_desc = &nfit_test->acpi_desc; + acpi_nfit_desc_init(acpi_desc, &pdev->dev); + acpi_desc->blk_do_io = nfit_test_blk_do_io; + nd_desc = &acpi_desc->nd_desc; + nd_desc->provider_name = NULL; + nd_desc->module = THIS_MODULE; + nd_desc->ndctl = nfit_test_ctl; + + rc = acpi_nfit_init(acpi_desc, nfit_test->nfit_buf, + nfit_test->nfit_filled); + if (rc) + return rc; + + rc = devm_add_action_or_reset(&pdev->dev, acpi_nfit_shutdown, acpi_desc); + if (rc) + return rc; + + if (nfit_test->setup != nfit_test0_setup) + return 0; + + nfit_test->setup_hotplug = 1; + nfit_test->setup(nfit_test); + + obj = kzalloc(sizeof(*obj), GFP_KERNEL); + if (!obj) + return -ENOMEM; + obj->type = ACPI_TYPE_BUFFER; + obj->buffer.length = nfit_test->nfit_size; + obj->buffer.pointer = nfit_test->nfit_buf; + *(nfit_test->_fit) = obj; + __acpi_nfit_notify(&pdev->dev, nfit_test, 0x80); + + /* associate dimm devices with nfit_mem data for notification testing */ + mutex_lock(&acpi_desc->init_mutex); + list_for_each_entry(nfit_mem, &acpi_desc->dimms, list) { + u32 nfit_handle = __to_nfit_memdev(nfit_mem)->device_handle; + int i; + + for (i = 0; i < ARRAY_SIZE(handle); i++) + if (nfit_handle == handle[i]) + dev_set_drvdata(nfit_test->dimm_dev[i], + nfit_mem); + } + mutex_unlock(&acpi_desc->init_mutex); + + return 0; +} + +static int nfit_test_remove(struct platform_device *pdev) +{ + return 0; +} + +static void nfit_test_release(struct device *dev) +{ + struct nfit_test *nfit_test = to_nfit_test(dev); + + kfree(nfit_test); +} + +static const struct platform_device_id nfit_test_id[] = { + { KBUILD_MODNAME }, + { }, +}; + +static struct platform_driver nfit_test_driver = { + .probe = nfit_test_probe, + .remove = nfit_test_remove, + .driver = { + .name = KBUILD_MODNAME, + }, + .id_table = nfit_test_id, +}; + +static char mcsafe_buf[PAGE_SIZE] __attribute__((__aligned__(PAGE_SIZE))); + +enum INJECT { + INJECT_NONE, + INJECT_SRC, + INJECT_DST, +}; + +static void mcsafe_test_init(char *dst, char *src, size_t size) +{ + size_t i; + + memset(dst, 0xff, size); + for (i = 0; i < size; i++) + src[i] = (char) i; +} + +static bool mcsafe_test_validate(unsigned char *dst, unsigned char *src, + size_t size, unsigned long rem) +{ + size_t i; + + for (i = 0; i < size - rem; i++) + if (dst[i] != (unsigned char) i) { + pr_info_once("%s:%d: offset: %zd got: %#x expect: %#x\n", + __func__, __LINE__, i, dst[i], + (unsigned char) i); + return false; + } + for (i = size - rem; i < size; i++) + if (dst[i] != 0xffU) { + pr_info_once("%s:%d: offset: %zd got: %#x expect: 0xff\n", + __func__, __LINE__, i, dst[i]); + return false; + } + return true; +} + +void mcsafe_test(void) +{ + char *inject_desc[] = { "none", "source", "destination" }; + enum INJECT inj; + + if (IS_ENABLED(CONFIG_MCSAFE_TEST)) { + pr_info("%s: run...\n", __func__); + } else { + pr_info("%s: disabled, skip.\n", __func__); + return; + } + + for (inj = INJECT_NONE; inj <= INJECT_DST; inj++) { + int i; + + pr_info("%s: inject: %s\n", __func__, inject_desc[inj]); + for (i = 0; i < 512; i++) { + unsigned long expect, rem; + void *src, *dst; + bool valid; + + switch (inj) { + case INJECT_NONE: + mcsafe_inject_src(NULL); + mcsafe_inject_dst(NULL); + dst = &mcsafe_buf[2048]; + src = &mcsafe_buf[1024 - i]; + expect = 0; + break; + case INJECT_SRC: + mcsafe_inject_src(&mcsafe_buf[1024]); + mcsafe_inject_dst(NULL); + dst = &mcsafe_buf[2048]; + src = &mcsafe_buf[1024 - i]; + expect = 512 - i; + break; + case INJECT_DST: + mcsafe_inject_src(NULL); + mcsafe_inject_dst(&mcsafe_buf[2048]); + dst = &mcsafe_buf[2048 - i]; + src = &mcsafe_buf[1024]; + expect = 512 - i; + break; + } + + mcsafe_test_init(dst, src, 512); + rem = __memcpy_mcsafe(dst, src, 512); + valid = mcsafe_test_validate(dst, src, 512, expect); + if (rem == expect && valid) + continue; + pr_info("%s: copy(%#lx, %#lx, %d) off: %d rem: %ld %s expect: %ld\n", + __func__, + ((unsigned long) dst) & ~PAGE_MASK, + ((unsigned long ) src) & ~PAGE_MASK, + 512, i, rem, valid ? "valid" : "bad", + expect); + } + } + + mcsafe_inject_src(NULL); + mcsafe_inject_dst(NULL); +} + +static __init int nfit_test_init(void) +{ + int rc, i; + + pmem_test(); + libnvdimm_test(); + acpi_nfit_test(); + device_dax_test(); + mcsafe_test(); + + nfit_test_setup(nfit_test_lookup, nfit_test_evaluate_dsm); + + nfit_wq = create_singlethread_workqueue("nfit"); + if (!nfit_wq) + return -ENOMEM; + + nfit_test_dimm = class_create(THIS_MODULE, "nfit_test_dimm"); + if (IS_ERR(nfit_test_dimm)) { + rc = PTR_ERR(nfit_test_dimm); + goto err_register; + } + + nfit_pool = gen_pool_create(ilog2(SZ_4M), NUMA_NO_NODE); + if (!nfit_pool) { + rc = -ENOMEM; + goto err_register; + } + + if (gen_pool_add(nfit_pool, SZ_4G, SZ_4G, NUMA_NO_NODE)) { + rc = -ENOMEM; + goto err_register; + } + + for (i = 0; i < NUM_NFITS; i++) { + struct nfit_test *nfit_test; + struct platform_device *pdev; + + nfit_test = kzalloc(sizeof(*nfit_test), GFP_KERNEL); + if (!nfit_test) { + rc = -ENOMEM; + goto err_register; + } + INIT_LIST_HEAD(&nfit_test->resources); + badrange_init(&nfit_test->badrange); + switch (i) { + case 0: + nfit_test->num_pm = NUM_PM; + nfit_test->dcr_idx = 0; + nfit_test->num_dcr = NUM_DCR; + nfit_test->alloc = nfit_test0_alloc; + nfit_test->setup = nfit_test0_setup; + break; + case 1: + nfit_test->num_pm = 2; + nfit_test->dcr_idx = NUM_DCR; + nfit_test->num_dcr = 2; + nfit_test->alloc = nfit_test1_alloc; + nfit_test->setup = nfit_test1_setup; + break; + default: + rc = -EINVAL; + goto err_register; + } + pdev = &nfit_test->pdev; + pdev->name = KBUILD_MODNAME; + pdev->id = i; + pdev->dev.release = nfit_test_release; + rc = platform_device_register(pdev); + if (rc) { + put_device(&pdev->dev); + goto err_register; + } + get_device(&pdev->dev); + + rc = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); + if (rc) + goto err_register; + + instances[i] = nfit_test; + INIT_WORK(&nfit_test->work, uc_error_notify); + } + + rc = platform_driver_register(&nfit_test_driver); + if (rc) + goto err_register; + return 0; + + err_register: + if (nfit_pool) + gen_pool_destroy(nfit_pool); + + destroy_workqueue(nfit_wq); + for (i = 0; i < NUM_NFITS; i++) + if (instances[i]) + platform_device_unregister(&instances[i]->pdev); + nfit_test_teardown(); + for (i = 0; i < NUM_NFITS; i++) + if (instances[i]) + put_device(&instances[i]->pdev.dev); + + return rc; +} + +static __exit void nfit_test_exit(void) +{ + int i; + + flush_workqueue(nfit_wq); + destroy_workqueue(nfit_wq); + for (i = 0; i < NUM_NFITS; i++) + platform_device_unregister(&instances[i]->pdev); + platform_driver_unregister(&nfit_test_driver); + nfit_test_teardown(); + + gen_pool_destroy(nfit_pool); + + for (i = 0; i < NUM_NFITS; i++) + put_device(&instances[i]->pdev.dev); + class_destroy(nfit_test_dimm); +} + +module_init(nfit_test_init); +module_exit(nfit_test_exit); +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Intel Corporation"); |