1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Copyright(c) 2013-2015 Intel Corporation. All rights reserved.
4  */
5 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
6 #include <linux/platform_device.h>
7 #include <linux/dma-mapping.h>
8 #include <linux/workqueue.h>
9 #include <linux/libnvdimm.h>
10 #include <linux/genalloc.h>
11 #include <linux/vmalloc.h>
12 #include <linux/device.h>
13 #include <linux/module.h>
14 #include <linux/mutex.h>
15 #include <linux/ndctl.h>
16 #include <linux/sizes.h>
17 #include <linux/list.h>
18 #include <linux/slab.h>
19 #include <nd-core.h>
20 #include <intel.h>
21 #include <nfit.h>
22 #include <nd.h>
23 #include "nfit_test.h"
24 #include "../watermark.h"
25 
26 /*
27  * Generate an NFIT table to describe the following topology:
28  *
29  * BUS0: Interleaved PMEM regions, and aliasing with BLK regions
30  *
31  *                     (a)                       (b)            DIMM   BLK-REGION
32  *           +----------+--------------+----------+---------+
33  * +------+  |  blk2.0  |     pm0.0    |  blk2.1  |  pm1.0  |    0      region2
34  * | imc0 +--+- - - - - region0 - - - -+----------+         +
35  * +--+---+  |  blk3.0  |     pm0.0    |  blk3.1  |  pm1.0  |    1      region3
36  *    |      +----------+--------------v----------v         v
37  * +--+---+                            |                    |
38  * | cpu0 |                                    region1
39  * +--+---+                            |                    |
40  *    |      +-------------------------^----------^         ^
41  * +--+---+  |                 blk4.0             |  pm1.0  |    2      region4
42  * | imc1 +--+-------------------------+----------+         +
43  * +------+  |                 blk5.0             |  pm1.0  |    3      region5
44  *           +-------------------------+----------+-+-------+
45  *
46  * +--+---+
47  * | cpu1 |
48  * +--+---+                   (Hotplug DIMM)
49  *    |      +----------------------------------------------+
50  * +--+---+  |                 blk6.0/pm7.0                 |    4      region6/7
51  * | imc0 +--+----------------------------------------------+
52  * +------+
53  *
54  *
55  * *) In this layout we have four dimms and two memory controllers in one
56  *    socket.  Each unique interface (BLK or PMEM) to DPA space
57  *    is identified by a region device with a dynamically assigned id.
58  *
59  * *) The first portion of dimm0 and dimm1 are interleaved as REGION0.
60  *    A single PMEM namespace "pm0.0" is created using half of the
61  *    REGION0 SPA-range.  REGION0 spans dimm0 and dimm1.  PMEM namespace
62  *    allocate from from the bottom of a region.  The unallocated
63  *    portion of REGION0 aliases with REGION2 and REGION3.  That
64  *    unallacted capacity is reclaimed as BLK namespaces ("blk2.0" and
65  *    "blk3.0") starting at the base of each DIMM to offset (a) in those
66  *    DIMMs.  "pm0.0", "blk2.0" and "blk3.0" are free-form readable
67  *    names that can be assigned to a namespace.
68  *
69  * *) In the last portion of dimm0 and dimm1 we have an interleaved
70  *    SPA range, REGION1, that spans those two dimms as well as dimm2
71  *    and dimm3.  Some of REGION1 allocated to a PMEM namespace named
72  *    "pm1.0" the rest is reclaimed in 4 BLK namespaces (for each
73  *    dimm in the interleave set), "blk2.1", "blk3.1", "blk4.0", and
74  *    "blk5.0".
75  *
76  * *) The portion of dimm2 and dimm3 that do not participate in the
77  *    REGION1 interleaved SPA range (i.e. the DPA address below offset
78  *    (b) are also included in the "blk4.0" and "blk5.0" namespaces.
79  *    Note, that BLK namespaces need not be contiguous in DPA-space, and
80  *    can consume aliased capacity from multiple interleave sets.
81  *
82  * BUS1: Legacy NVDIMM (single contiguous range)
83  *
84  *  region2
85  * +---------------------+
86  * |---------------------|
87  * ||       pm2.0       ||
88  * |---------------------|
89  * +---------------------+
90  *
91  * *) A NFIT-table may describe a simple system-physical-address range
92  *    with no BLK aliasing.  This type of region may optionally
93  *    reference an NVDIMM.
94  */
95 enum {
96 	NUM_PM  = 3,
97 	NUM_DCR = 5,
98 	NUM_HINTS = 8,
99 	NUM_BDW = NUM_DCR,
100 	NUM_SPA = NUM_PM + NUM_DCR + NUM_BDW,
101 	NUM_MEM = NUM_DCR + NUM_BDW + 2 /* spa0 iset */
102 		+ 4 /* spa1 iset */ + 1 /* spa11 iset */,
103 	DIMM_SIZE = SZ_32M,
104 	LABEL_SIZE = SZ_128K,
105 	SPA_VCD_SIZE = SZ_4M,
106 	SPA0_SIZE = DIMM_SIZE,
107 	SPA1_SIZE = DIMM_SIZE*2,
108 	SPA2_SIZE = DIMM_SIZE,
109 	BDW_SIZE = 64 << 8,
110 	DCR_SIZE = 12,
111 	NUM_NFITS = 2, /* permit testing multiple NFITs per system */
112 };
113 
114 struct nfit_test_dcr {
115 	__le64 bdw_addr;
116 	__le32 bdw_status;
117 	__u8 aperature[BDW_SIZE];
118 };
119 
120 #define NFIT_DIMM_HANDLE(node, socket, imc, chan, dimm) \
121 	(((node & 0xfff) << 16) | ((socket & 0xf) << 12) \
122 	 | ((imc & 0xf) << 8) | ((chan & 0xf) << 4) | (dimm & 0xf))
123 
124 static u32 handle[] = {
125 	[0] = NFIT_DIMM_HANDLE(0, 0, 0, 0, 0),
126 	[1] = NFIT_DIMM_HANDLE(0, 0, 0, 0, 1),
127 	[2] = NFIT_DIMM_HANDLE(0, 0, 1, 0, 0),
128 	[3] = NFIT_DIMM_HANDLE(0, 0, 1, 0, 1),
129 	[4] = NFIT_DIMM_HANDLE(0, 1, 0, 0, 0),
130 	[5] = NFIT_DIMM_HANDLE(1, 0, 0, 0, 0),
131 	[6] = NFIT_DIMM_HANDLE(1, 0, 0, 0, 1),
132 };
133 
134 static unsigned long dimm_fail_cmd_flags[ARRAY_SIZE(handle)];
135 static int dimm_fail_cmd_code[ARRAY_SIZE(handle)];
136 struct nfit_test_sec {
137 	u8 state;
138 	u8 ext_state;
139 	u8 old_state;
140 	u8 passphrase[32];
141 	u8 master_passphrase[32];
142 	u64 overwrite_end_time;
143 } dimm_sec_info[NUM_DCR];
144 
145 static const struct nd_intel_smart smart_def = {
146 	.flags = ND_INTEL_SMART_HEALTH_VALID
147 		| ND_INTEL_SMART_SPARES_VALID
148 		| ND_INTEL_SMART_ALARM_VALID
149 		| ND_INTEL_SMART_USED_VALID
150 		| ND_INTEL_SMART_SHUTDOWN_VALID
151 		| ND_INTEL_SMART_SHUTDOWN_COUNT_VALID
152 		| ND_INTEL_SMART_MTEMP_VALID
153 		| ND_INTEL_SMART_CTEMP_VALID,
154 	.health = ND_INTEL_SMART_NON_CRITICAL_HEALTH,
155 	.media_temperature = 23 * 16,
156 	.ctrl_temperature = 25 * 16,
157 	.pmic_temperature = 40 * 16,
158 	.spares = 75,
159 	.alarm_flags = ND_INTEL_SMART_SPARE_TRIP
160 		| ND_INTEL_SMART_TEMP_TRIP,
161 	.ait_status = 1,
162 	.life_used = 5,
163 	.shutdown_state = 0,
164 	.shutdown_count = 42,
165 	.vendor_size = 0,
166 };
167 
168 struct nfit_test_fw {
169 	enum intel_fw_update_state state;
170 	u32 context;
171 	u64 version;
172 	u32 size_received;
173 	u64 end_time;
174 	bool armed;
175 	bool missed_activate;
176 	unsigned long last_activate;
177 };
178 
179 struct nfit_test {
180 	struct acpi_nfit_desc acpi_desc;
181 	struct platform_device pdev;
182 	struct list_head resources;
183 	void *nfit_buf;
184 	dma_addr_t nfit_dma;
185 	size_t nfit_size;
186 	size_t nfit_filled;
187 	int dcr_idx;
188 	int num_dcr;
189 	int num_pm;
190 	void **dimm;
191 	dma_addr_t *dimm_dma;
192 	void **flush;
193 	dma_addr_t *flush_dma;
194 	void **label;
195 	dma_addr_t *label_dma;
196 	void **spa_set;
197 	dma_addr_t *spa_set_dma;
198 	struct nfit_test_dcr **dcr;
199 	dma_addr_t *dcr_dma;
200 	int (*alloc)(struct nfit_test *t);
201 	void (*setup)(struct nfit_test *t);
202 	int setup_hotplug;
203 	union acpi_object **_fit;
204 	dma_addr_t _fit_dma;
205 	struct ars_state {
206 		struct nd_cmd_ars_status *ars_status;
207 		unsigned long deadline;
208 		spinlock_t lock;
209 	} ars_state;
210 	struct device *dimm_dev[ARRAY_SIZE(handle)];
211 	struct nd_intel_smart *smart;
212 	struct nd_intel_smart_threshold *smart_threshold;
213 	struct badrange badrange;
214 	struct work_struct work;
215 	struct nfit_test_fw *fw;
216 };
217 
218 static struct workqueue_struct *nfit_wq;
219 
220 static struct gen_pool *nfit_pool;
221 
222 static const char zero_key[NVDIMM_PASSPHRASE_LEN];
223 
to_nfit_test(struct device * dev)224 static struct nfit_test *to_nfit_test(struct device *dev)
225 {
226 	struct platform_device *pdev = to_platform_device(dev);
227 
228 	return container_of(pdev, struct nfit_test, pdev);
229 }
230 
nd_intel_test_get_fw_info(struct nfit_test * t,struct nd_intel_fw_info * nd_cmd,unsigned int buf_len,int idx)231 static int nd_intel_test_get_fw_info(struct nfit_test *t,
232 		struct nd_intel_fw_info *nd_cmd, unsigned int buf_len,
233 		int idx)
234 {
235 	struct device *dev = &t->pdev.dev;
236 	struct nfit_test_fw *fw = &t->fw[idx];
237 
238 	dev_dbg(dev, "%s(nfit_test: %p nd_cmd: %p, buf_len: %u, idx: %d\n",
239 			__func__, t, nd_cmd, buf_len, idx);
240 
241 	if (buf_len < sizeof(*nd_cmd))
242 		return -EINVAL;
243 
244 	nd_cmd->status = 0;
245 	nd_cmd->storage_size = INTEL_FW_STORAGE_SIZE;
246 	nd_cmd->max_send_len = INTEL_FW_MAX_SEND_LEN;
247 	nd_cmd->query_interval = INTEL_FW_QUERY_INTERVAL;
248 	nd_cmd->max_query_time = INTEL_FW_QUERY_MAX_TIME;
249 	nd_cmd->update_cap = 0;
250 	nd_cmd->fis_version = INTEL_FW_FIS_VERSION;
251 	nd_cmd->run_version = 0;
252 	nd_cmd->updated_version = fw->version;
253 
254 	return 0;
255 }
256 
nd_intel_test_start_update(struct nfit_test * t,struct nd_intel_fw_start * nd_cmd,unsigned int buf_len,int idx)257 static int nd_intel_test_start_update(struct nfit_test *t,
258 		struct nd_intel_fw_start *nd_cmd, unsigned int buf_len,
259 		int idx)
260 {
261 	struct device *dev = &t->pdev.dev;
262 	struct nfit_test_fw *fw = &t->fw[idx];
263 
264 	dev_dbg(dev, "%s(nfit_test: %p nd_cmd: %p buf_len: %u idx: %d)\n",
265 			__func__, t, nd_cmd, buf_len, idx);
266 
267 	if (buf_len < sizeof(*nd_cmd))
268 		return -EINVAL;
269 
270 	if (fw->state != FW_STATE_NEW) {
271 		/* extended status, FW update in progress */
272 		nd_cmd->status = 0x10007;
273 		return 0;
274 	}
275 
276 	fw->state = FW_STATE_IN_PROGRESS;
277 	fw->context++;
278 	fw->size_received = 0;
279 	nd_cmd->status = 0;
280 	nd_cmd->context = fw->context;
281 
282 	dev_dbg(dev, "%s: context issued: %#x\n", __func__, nd_cmd->context);
283 
284 	return 0;
285 }
286 
nd_intel_test_send_data(struct nfit_test * t,struct nd_intel_fw_send_data * nd_cmd,unsigned int buf_len,int idx)287 static int nd_intel_test_send_data(struct nfit_test *t,
288 		struct nd_intel_fw_send_data *nd_cmd, unsigned int buf_len,
289 		int idx)
290 {
291 	struct device *dev = &t->pdev.dev;
292 	struct nfit_test_fw *fw = &t->fw[idx];
293 	u32 *status = (u32 *)&nd_cmd->data[nd_cmd->length];
294 
295 	dev_dbg(dev, "%s(nfit_test: %p nd_cmd: %p buf_len: %u idx: %d)\n",
296 			__func__, t, nd_cmd, buf_len, idx);
297 
298 	if (buf_len < sizeof(*nd_cmd))
299 		return -EINVAL;
300 
301 
302 	dev_dbg(dev, "%s: cmd->status: %#x\n", __func__, *status);
303 	dev_dbg(dev, "%s: cmd->data[0]: %#x\n", __func__, nd_cmd->data[0]);
304 	dev_dbg(dev, "%s: cmd->data[%u]: %#x\n", __func__, nd_cmd->length-1,
305 			nd_cmd->data[nd_cmd->length-1]);
306 
307 	if (fw->state != FW_STATE_IN_PROGRESS) {
308 		dev_dbg(dev, "%s: not in IN_PROGRESS state\n", __func__);
309 		*status = 0x5;
310 		return 0;
311 	}
312 
313 	if (nd_cmd->context != fw->context) {
314 		dev_dbg(dev, "%s: incorrect context: in: %#x correct: %#x\n",
315 				__func__, nd_cmd->context, fw->context);
316 		*status = 0x10007;
317 		return 0;
318 	}
319 
320 	/*
321 	 * check offset + len > size of fw storage
322 	 * check length is > max send length
323 	 */
324 	if (nd_cmd->offset + nd_cmd->length > INTEL_FW_STORAGE_SIZE ||
325 			nd_cmd->length > INTEL_FW_MAX_SEND_LEN) {
326 		*status = 0x3;
327 		dev_dbg(dev, "%s: buffer boundary violation\n", __func__);
328 		return 0;
329 	}
330 
331 	fw->size_received += nd_cmd->length;
332 	dev_dbg(dev, "%s: copying %u bytes, %u bytes so far\n",
333 			__func__, nd_cmd->length, fw->size_received);
334 	*status = 0;
335 	return 0;
336 }
337 
nd_intel_test_finish_fw(struct nfit_test * t,struct nd_intel_fw_finish_update * nd_cmd,unsigned int buf_len,int idx)338 static int nd_intel_test_finish_fw(struct nfit_test *t,
339 		struct nd_intel_fw_finish_update *nd_cmd,
340 		unsigned int buf_len, int idx)
341 {
342 	struct device *dev = &t->pdev.dev;
343 	struct nfit_test_fw *fw = &t->fw[idx];
344 
345 	dev_dbg(dev, "%s(nfit_test: %p nd_cmd: %p buf_len: %u idx: %d)\n",
346 			__func__, t, nd_cmd, buf_len, idx);
347 
348 	if (fw->state == FW_STATE_UPDATED) {
349 		/* update already done, need activation */
350 		nd_cmd->status = 0x20007;
351 		return 0;
352 	}
353 
354 	dev_dbg(dev, "%s: context: %#x  ctrl_flags: %#x\n",
355 			__func__, nd_cmd->context, nd_cmd->ctrl_flags);
356 
357 	switch (nd_cmd->ctrl_flags) {
358 	case 0: /* finish */
359 		if (nd_cmd->context != fw->context) {
360 			dev_dbg(dev, "%s: incorrect context: in: %#x correct: %#x\n",
361 					__func__, nd_cmd->context,
362 					fw->context);
363 			nd_cmd->status = 0x10007;
364 			return 0;
365 		}
366 		nd_cmd->status = 0;
367 		fw->state = FW_STATE_VERIFY;
368 		/* set 1 second of time for firmware "update" */
369 		fw->end_time = jiffies + HZ;
370 		break;
371 
372 	case 1: /* abort */
373 		fw->size_received = 0;
374 		/* successfully aborted status */
375 		nd_cmd->status = 0x40007;
376 		fw->state = FW_STATE_NEW;
377 		dev_dbg(dev, "%s: abort successful\n", __func__);
378 		break;
379 
380 	default: /* bad control flag */
381 		dev_warn(dev, "%s: unknown control flag: %#x\n",
382 				__func__, nd_cmd->ctrl_flags);
383 		return -EINVAL;
384 	}
385 
386 	return 0;
387 }
388 
nd_intel_test_finish_query(struct nfit_test * t,struct nd_intel_fw_finish_query * nd_cmd,unsigned int buf_len,int idx)389 static int nd_intel_test_finish_query(struct nfit_test *t,
390 		struct nd_intel_fw_finish_query *nd_cmd,
391 		unsigned int buf_len, int idx)
392 {
393 	struct device *dev = &t->pdev.dev;
394 	struct nfit_test_fw *fw = &t->fw[idx];
395 
396 	dev_dbg(dev, "%s(nfit_test: %p nd_cmd: %p buf_len: %u idx: %d)\n",
397 			__func__, t, nd_cmd, buf_len, idx);
398 
399 	if (buf_len < sizeof(*nd_cmd))
400 		return -EINVAL;
401 
402 	if (nd_cmd->context != fw->context) {
403 		dev_dbg(dev, "%s: incorrect context: in: %#x correct: %#x\n",
404 				__func__, nd_cmd->context, fw->context);
405 		nd_cmd->status = 0x10007;
406 		return 0;
407 	}
408 
409 	dev_dbg(dev, "%s context: %#x\n", __func__, nd_cmd->context);
410 
411 	switch (fw->state) {
412 	case FW_STATE_NEW:
413 		nd_cmd->updated_fw_rev = 0;
414 		nd_cmd->status = 0;
415 		dev_dbg(dev, "%s: new state\n", __func__);
416 		break;
417 
418 	case FW_STATE_IN_PROGRESS:
419 		/* sequencing error */
420 		nd_cmd->status = 0x40007;
421 		nd_cmd->updated_fw_rev = 0;
422 		dev_dbg(dev, "%s: sequence error\n", __func__);
423 		break;
424 
425 	case FW_STATE_VERIFY:
426 		if (time_is_after_jiffies64(fw->end_time)) {
427 			nd_cmd->updated_fw_rev = 0;
428 			nd_cmd->status = 0x20007;
429 			dev_dbg(dev, "%s: still verifying\n", __func__);
430 			break;
431 		}
432 		dev_dbg(dev, "%s: transition out verify\n", __func__);
433 		fw->state = FW_STATE_UPDATED;
434 		fw->missed_activate = false;
435 		fallthrough;
436 	case FW_STATE_UPDATED:
437 		nd_cmd->status = 0;
438 		/* bogus test version */
439 		fw->version = nd_cmd->updated_fw_rev =
440 			INTEL_FW_FAKE_VERSION;
441 		dev_dbg(dev, "%s: updated\n", __func__);
442 		break;
443 
444 	default: /* we should never get here */
445 		return -EINVAL;
446 	}
447 
448 	return 0;
449 }
450 
nfit_test_cmd_get_config_size(struct nd_cmd_get_config_size * nd_cmd,unsigned int buf_len)451 static int nfit_test_cmd_get_config_size(struct nd_cmd_get_config_size *nd_cmd,
452 		unsigned int buf_len)
453 {
454 	if (buf_len < sizeof(*nd_cmd))
455 		return -EINVAL;
456 
457 	nd_cmd->status = 0;
458 	nd_cmd->config_size = LABEL_SIZE;
459 	nd_cmd->max_xfer = SZ_4K;
460 
461 	return 0;
462 }
463 
nfit_test_cmd_get_config_data(struct nd_cmd_get_config_data_hdr * nd_cmd,unsigned int buf_len,void * label)464 static int nfit_test_cmd_get_config_data(struct nd_cmd_get_config_data_hdr
465 		*nd_cmd, unsigned int buf_len, void *label)
466 {
467 	unsigned int len, offset = nd_cmd->in_offset;
468 	int rc;
469 
470 	if (buf_len < sizeof(*nd_cmd))
471 		return -EINVAL;
472 	if (offset >= LABEL_SIZE)
473 		return -EINVAL;
474 	if (nd_cmd->in_length + sizeof(*nd_cmd) > buf_len)
475 		return -EINVAL;
476 
477 	nd_cmd->status = 0;
478 	len = min(nd_cmd->in_length, LABEL_SIZE - offset);
479 	memcpy(nd_cmd->out_buf, label + offset, len);
480 	rc = buf_len - sizeof(*nd_cmd) - len;
481 
482 	return rc;
483 }
484 
nfit_test_cmd_set_config_data(struct nd_cmd_set_config_hdr * nd_cmd,unsigned int buf_len,void * label)485 static int nfit_test_cmd_set_config_data(struct nd_cmd_set_config_hdr *nd_cmd,
486 		unsigned int buf_len, void *label)
487 {
488 	unsigned int len, offset = nd_cmd->in_offset;
489 	u32 *status;
490 	int rc;
491 
492 	if (buf_len < sizeof(*nd_cmd))
493 		return -EINVAL;
494 	if (offset >= LABEL_SIZE)
495 		return -EINVAL;
496 	if (nd_cmd->in_length + sizeof(*nd_cmd) + 4 > buf_len)
497 		return -EINVAL;
498 
499 	status = (void *)nd_cmd + nd_cmd->in_length + sizeof(*nd_cmd);
500 	*status = 0;
501 	len = min(nd_cmd->in_length, LABEL_SIZE - offset);
502 	memcpy(label + offset, nd_cmd->in_buf, len);
503 	rc = buf_len - sizeof(*nd_cmd) - (len + 4);
504 
505 	return rc;
506 }
507 
508 #define NFIT_TEST_CLEAR_ERR_UNIT 256
509 
nfit_test_cmd_ars_cap(struct nd_cmd_ars_cap * nd_cmd,unsigned int buf_len)510 static int nfit_test_cmd_ars_cap(struct nd_cmd_ars_cap *nd_cmd,
511 		unsigned int buf_len)
512 {
513 	int ars_recs;
514 
515 	if (buf_len < sizeof(*nd_cmd))
516 		return -EINVAL;
517 
518 	/* for testing, only store up to n records that fit within 4k */
519 	ars_recs = SZ_4K / sizeof(struct nd_ars_record);
520 
521 	nd_cmd->max_ars_out = sizeof(struct nd_cmd_ars_status)
522 		+ ars_recs * sizeof(struct nd_ars_record);
523 	nd_cmd->status = (ND_ARS_PERSISTENT | ND_ARS_VOLATILE) << 16;
524 	nd_cmd->clear_err_unit = NFIT_TEST_CLEAR_ERR_UNIT;
525 
526 	return 0;
527 }
528 
post_ars_status(struct ars_state * ars_state,struct badrange * badrange,u64 addr,u64 len)529 static void post_ars_status(struct ars_state *ars_state,
530 		struct badrange *badrange, u64 addr, u64 len)
531 {
532 	struct nd_cmd_ars_status *ars_status;
533 	struct nd_ars_record *ars_record;
534 	struct badrange_entry *be;
535 	u64 end = addr + len - 1;
536 	int i = 0;
537 
538 	ars_state->deadline = jiffies + 1*HZ;
539 	ars_status = ars_state->ars_status;
540 	ars_status->status = 0;
541 	ars_status->address = addr;
542 	ars_status->length = len;
543 	ars_status->type = ND_ARS_PERSISTENT;
544 
545 	spin_lock(&badrange->lock);
546 	list_for_each_entry(be, &badrange->list, list) {
547 		u64 be_end = be->start + be->length - 1;
548 		u64 rstart, rend;
549 
550 		/* skip entries outside the range */
551 		if (be_end < addr || be->start > end)
552 			continue;
553 
554 		rstart = (be->start < addr) ? addr : be->start;
555 		rend = (be_end < end) ? be_end : end;
556 		ars_record = &ars_status->records[i];
557 		ars_record->handle = 0;
558 		ars_record->err_address = rstart;
559 		ars_record->length = rend - rstart + 1;
560 		i++;
561 	}
562 	spin_unlock(&badrange->lock);
563 	ars_status->num_records = i;
564 	ars_status->out_length = sizeof(struct nd_cmd_ars_status)
565 		+ i * sizeof(struct nd_ars_record);
566 }
567 
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)568 static int nfit_test_cmd_ars_start(struct nfit_test *t,
569 		struct ars_state *ars_state,
570 		struct nd_cmd_ars_start *ars_start, unsigned int buf_len,
571 		int *cmd_rc)
572 {
573 	if (buf_len < sizeof(*ars_start))
574 		return -EINVAL;
575 
576 	spin_lock(&ars_state->lock);
577 	if (time_before(jiffies, ars_state->deadline)) {
578 		ars_start->status = NFIT_ARS_START_BUSY;
579 		*cmd_rc = -EBUSY;
580 	} else {
581 		ars_start->status = 0;
582 		ars_start->scrub_time = 1;
583 		post_ars_status(ars_state, &t->badrange, ars_start->address,
584 				ars_start->length);
585 		*cmd_rc = 0;
586 	}
587 	spin_unlock(&ars_state->lock);
588 
589 	return 0;
590 }
591 
nfit_test_cmd_ars_status(struct ars_state * ars_state,struct nd_cmd_ars_status * ars_status,unsigned int buf_len,int * cmd_rc)592 static int nfit_test_cmd_ars_status(struct ars_state *ars_state,
593 		struct nd_cmd_ars_status *ars_status, unsigned int buf_len,
594 		int *cmd_rc)
595 {
596 	if (buf_len < ars_state->ars_status->out_length)
597 		return -EINVAL;
598 
599 	spin_lock(&ars_state->lock);
600 	if (time_before(jiffies, ars_state->deadline)) {
601 		memset(ars_status, 0, buf_len);
602 		ars_status->status = NFIT_ARS_STATUS_BUSY;
603 		ars_status->out_length = sizeof(*ars_status);
604 		*cmd_rc = -EBUSY;
605 	} else {
606 		memcpy(ars_status, ars_state->ars_status,
607 				ars_state->ars_status->out_length);
608 		*cmd_rc = 0;
609 	}
610 	spin_unlock(&ars_state->lock);
611 	return 0;
612 }
613 
nfit_test_cmd_clear_error(struct nfit_test * t,struct nd_cmd_clear_error * clear_err,unsigned int buf_len,int * cmd_rc)614 static int nfit_test_cmd_clear_error(struct nfit_test *t,
615 		struct nd_cmd_clear_error *clear_err,
616 		unsigned int buf_len, int *cmd_rc)
617 {
618 	const u64 mask = NFIT_TEST_CLEAR_ERR_UNIT - 1;
619 	if (buf_len < sizeof(*clear_err))
620 		return -EINVAL;
621 
622 	if ((clear_err->address & mask) || (clear_err->length & mask))
623 		return -EINVAL;
624 
625 	badrange_forget(&t->badrange, clear_err->address, clear_err->length);
626 	clear_err->status = 0;
627 	clear_err->cleared = clear_err->length;
628 	*cmd_rc = 0;
629 	return 0;
630 }
631 
632 struct region_search_spa {
633 	u64 addr;
634 	struct nd_region *region;
635 };
636 
is_region_device(struct device * dev)637 static int is_region_device(struct device *dev)
638 {
639 	return !strncmp(dev->kobj.name, "region", 6);
640 }
641 
nfit_test_search_region_spa(struct device * dev,void * data)642 static int nfit_test_search_region_spa(struct device *dev, void *data)
643 {
644 	struct region_search_spa *ctx = data;
645 	struct nd_region *nd_region;
646 	resource_size_t ndr_end;
647 
648 	if (!is_region_device(dev))
649 		return 0;
650 
651 	nd_region = to_nd_region(dev);
652 	ndr_end = nd_region->ndr_start + nd_region->ndr_size;
653 
654 	if (ctx->addr >= nd_region->ndr_start && ctx->addr < ndr_end) {
655 		ctx->region = nd_region;
656 		return 1;
657 	}
658 
659 	return 0;
660 }
661 
nfit_test_search_spa(struct nvdimm_bus * bus,struct nd_cmd_translate_spa * spa)662 static int nfit_test_search_spa(struct nvdimm_bus *bus,
663 		struct nd_cmd_translate_spa *spa)
664 {
665 	int ret;
666 	struct nd_region *nd_region = NULL;
667 	struct nvdimm *nvdimm = NULL;
668 	struct nd_mapping *nd_mapping = NULL;
669 	struct region_search_spa ctx = {
670 		.addr = spa->spa,
671 		.region = NULL,
672 	};
673 	u64 dpa;
674 
675 	ret = device_for_each_child(&bus->dev, &ctx,
676 				nfit_test_search_region_spa);
677 
678 	if (!ret)
679 		return -ENODEV;
680 
681 	nd_region = ctx.region;
682 
683 	dpa = ctx.addr - nd_region->ndr_start;
684 
685 	/*
686 	 * last dimm is selected for test
687 	 */
688 	nd_mapping = &nd_region->mapping[nd_region->ndr_mappings - 1];
689 	nvdimm = nd_mapping->nvdimm;
690 
691 	spa->devices[0].nfit_device_handle = handle[nvdimm->id];
692 	spa->num_nvdimms = 1;
693 	spa->devices[0].dpa = dpa;
694 
695 	return 0;
696 }
697 
nfit_test_cmd_translate_spa(struct nvdimm_bus * bus,struct nd_cmd_translate_spa * spa,unsigned int buf_len)698 static int nfit_test_cmd_translate_spa(struct nvdimm_bus *bus,
699 		struct nd_cmd_translate_spa *spa, unsigned int buf_len)
700 {
701 	if (buf_len < spa->translate_length)
702 		return -EINVAL;
703 
704 	if (nfit_test_search_spa(bus, spa) < 0 || !spa->num_nvdimms)
705 		spa->status = 2;
706 
707 	return 0;
708 }
709 
nfit_test_cmd_smart(struct nd_intel_smart * smart,unsigned int buf_len,struct nd_intel_smart * smart_data)710 static int nfit_test_cmd_smart(struct nd_intel_smart *smart, unsigned int buf_len,
711 		struct nd_intel_smart *smart_data)
712 {
713 	if (buf_len < sizeof(*smart))
714 		return -EINVAL;
715 	memcpy(smart, smart_data, sizeof(*smart));
716 	return 0;
717 }
718 
nfit_test_cmd_smart_threshold(struct nd_intel_smart_threshold * out,unsigned int buf_len,struct nd_intel_smart_threshold * smart_t)719 static int nfit_test_cmd_smart_threshold(
720 		struct nd_intel_smart_threshold *out,
721 		unsigned int buf_len,
722 		struct nd_intel_smart_threshold *smart_t)
723 {
724 	if (buf_len < sizeof(*smart_t))
725 		return -EINVAL;
726 	memcpy(out, smart_t, sizeof(*smart_t));
727 	return 0;
728 }
729 
smart_notify(struct device * bus_dev,struct device * dimm_dev,struct nd_intel_smart * smart,struct nd_intel_smart_threshold * thresh)730 static void smart_notify(struct device *bus_dev,
731 		struct device *dimm_dev, struct nd_intel_smart *smart,
732 		struct nd_intel_smart_threshold *thresh)
733 {
734 	dev_dbg(dimm_dev, "%s: alarm: %#x spares: %d (%d) mtemp: %d (%d) ctemp: %d (%d)\n",
735 			__func__, thresh->alarm_control, thresh->spares,
736 			smart->spares, thresh->media_temperature,
737 			smart->media_temperature, thresh->ctrl_temperature,
738 			smart->ctrl_temperature);
739 	if (((thresh->alarm_control & ND_INTEL_SMART_SPARE_TRIP)
740 				&& smart->spares
741 				<= thresh->spares)
742 			|| ((thresh->alarm_control & ND_INTEL_SMART_TEMP_TRIP)
743 				&& smart->media_temperature
744 				>= thresh->media_temperature)
745 			|| ((thresh->alarm_control & ND_INTEL_SMART_CTEMP_TRIP)
746 				&& smart->ctrl_temperature
747 				>= thresh->ctrl_temperature)
748 			|| (smart->health != ND_INTEL_SMART_NON_CRITICAL_HEALTH)
749 			|| (smart->shutdown_state != 0)) {
750 		device_lock(bus_dev);
751 		__acpi_nvdimm_notify(dimm_dev, 0x81);
752 		device_unlock(bus_dev);
753 	}
754 }
755 
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)756 static int nfit_test_cmd_smart_set_threshold(
757 		struct nd_intel_smart_set_threshold *in,
758 		unsigned int buf_len,
759 		struct nd_intel_smart_threshold *thresh,
760 		struct nd_intel_smart *smart,
761 		struct device *bus_dev, struct device *dimm_dev)
762 {
763 	unsigned int size;
764 
765 	size = sizeof(*in) - 4;
766 	if (buf_len < size)
767 		return -EINVAL;
768 	memcpy(thresh->data, in, size);
769 	in->status = 0;
770 	smart_notify(bus_dev, dimm_dev, smart, thresh);
771 
772 	return 0;
773 }
774 
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)775 static int nfit_test_cmd_smart_inject(
776 		struct nd_intel_smart_inject *inj,
777 		unsigned int buf_len,
778 		struct nd_intel_smart_threshold *thresh,
779 		struct nd_intel_smart *smart,
780 		struct device *bus_dev, struct device *dimm_dev)
781 {
782 	if (buf_len != sizeof(*inj))
783 		return -EINVAL;
784 
785 	if (inj->flags & ND_INTEL_SMART_INJECT_MTEMP) {
786 		if (inj->mtemp_enable)
787 			smart->media_temperature = inj->media_temperature;
788 		else
789 			smart->media_temperature = smart_def.media_temperature;
790 	}
791 	if (inj->flags & ND_INTEL_SMART_INJECT_SPARE) {
792 		if (inj->spare_enable)
793 			smart->spares = inj->spares;
794 		else
795 			smart->spares = smart_def.spares;
796 	}
797 	if (inj->flags & ND_INTEL_SMART_INJECT_FATAL) {
798 		if (inj->fatal_enable)
799 			smart->health = ND_INTEL_SMART_FATAL_HEALTH;
800 		else
801 			smart->health = ND_INTEL_SMART_NON_CRITICAL_HEALTH;
802 	}
803 	if (inj->flags & ND_INTEL_SMART_INJECT_SHUTDOWN) {
804 		if (inj->unsafe_shutdown_enable) {
805 			smart->shutdown_state = 1;
806 			smart->shutdown_count++;
807 		} else
808 			smart->shutdown_state = 0;
809 	}
810 	inj->status = 0;
811 	smart_notify(bus_dev, dimm_dev, smart, thresh);
812 
813 	return 0;
814 }
815 
uc_error_notify(struct work_struct * work)816 static void uc_error_notify(struct work_struct *work)
817 {
818 	struct nfit_test *t = container_of(work, typeof(*t), work);
819 
820 	__acpi_nfit_notify(&t->pdev.dev, t, NFIT_NOTIFY_UC_MEMORY_ERROR);
821 }
822 
nfit_test_cmd_ars_error_inject(struct nfit_test * t,struct nd_cmd_ars_err_inj * err_inj,unsigned int buf_len)823 static int nfit_test_cmd_ars_error_inject(struct nfit_test *t,
824 		struct nd_cmd_ars_err_inj *err_inj, unsigned int buf_len)
825 {
826 	int rc;
827 
828 	if (buf_len != sizeof(*err_inj)) {
829 		rc = -EINVAL;
830 		goto err;
831 	}
832 
833 	if (err_inj->err_inj_spa_range_length <= 0) {
834 		rc = -EINVAL;
835 		goto err;
836 	}
837 
838 	rc =  badrange_add(&t->badrange, err_inj->err_inj_spa_range_base,
839 			err_inj->err_inj_spa_range_length);
840 	if (rc < 0)
841 		goto err;
842 
843 	if (err_inj->err_inj_options & (1 << ND_ARS_ERR_INJ_OPT_NOTIFY))
844 		queue_work(nfit_wq, &t->work);
845 
846 	err_inj->status = 0;
847 	return 0;
848 
849 err:
850 	err_inj->status = NFIT_ARS_INJECT_INVALID;
851 	return rc;
852 }
853 
nfit_test_cmd_ars_inject_clear(struct nfit_test * t,struct nd_cmd_ars_err_inj_clr * err_clr,unsigned int buf_len)854 static int nfit_test_cmd_ars_inject_clear(struct nfit_test *t,
855 		struct nd_cmd_ars_err_inj_clr *err_clr, unsigned int buf_len)
856 {
857 	int rc;
858 
859 	if (buf_len != sizeof(*err_clr)) {
860 		rc = -EINVAL;
861 		goto err;
862 	}
863 
864 	if (err_clr->err_inj_clr_spa_range_length <= 0) {
865 		rc = -EINVAL;
866 		goto err;
867 	}
868 
869 	badrange_forget(&t->badrange, err_clr->err_inj_clr_spa_range_base,
870 			err_clr->err_inj_clr_spa_range_length);
871 
872 	err_clr->status = 0;
873 	return 0;
874 
875 err:
876 	err_clr->status = NFIT_ARS_INJECT_INVALID;
877 	return rc;
878 }
879 
nfit_test_cmd_ars_inject_status(struct nfit_test * t,struct nd_cmd_ars_err_inj_stat * err_stat,unsigned int buf_len)880 static int nfit_test_cmd_ars_inject_status(struct nfit_test *t,
881 		struct nd_cmd_ars_err_inj_stat *err_stat,
882 		unsigned int buf_len)
883 {
884 	struct badrange_entry *be;
885 	int max = SZ_4K / sizeof(struct nd_error_stat_query_record);
886 	int i = 0;
887 
888 	err_stat->status = 0;
889 	spin_lock(&t->badrange.lock);
890 	list_for_each_entry(be, &t->badrange.list, list) {
891 		err_stat->record[i].err_inj_stat_spa_range_base = be->start;
892 		err_stat->record[i].err_inj_stat_spa_range_length = be->length;
893 		i++;
894 		if (i > max)
895 			break;
896 	}
897 	spin_unlock(&t->badrange.lock);
898 	err_stat->inj_err_rec_count = i;
899 
900 	return 0;
901 }
902 
nd_intel_test_cmd_set_lss_status(struct nfit_test * t,struct nd_intel_lss * nd_cmd,unsigned int buf_len)903 static int nd_intel_test_cmd_set_lss_status(struct nfit_test *t,
904 		struct nd_intel_lss *nd_cmd, unsigned int buf_len)
905 {
906 	struct device *dev = &t->pdev.dev;
907 
908 	if (buf_len < sizeof(*nd_cmd))
909 		return -EINVAL;
910 
911 	switch (nd_cmd->enable) {
912 	case 0:
913 		nd_cmd->status = 0;
914 		dev_dbg(dev, "%s: Latch System Shutdown Status disabled\n",
915 				__func__);
916 		break;
917 	case 1:
918 		nd_cmd->status = 0;
919 		dev_dbg(dev, "%s: Latch System Shutdown Status enabled\n",
920 				__func__);
921 		break;
922 	default:
923 		dev_warn(dev, "Unknown enable value: %#x\n", nd_cmd->enable);
924 		nd_cmd->status = 0x3;
925 		break;
926 	}
927 
928 
929 	return 0;
930 }
931 
override_return_code(int dimm,unsigned int func,int rc)932 static int override_return_code(int dimm, unsigned int func, int rc)
933 {
934 	if ((1 << func) & dimm_fail_cmd_flags[dimm]) {
935 		if (dimm_fail_cmd_code[dimm])
936 			return dimm_fail_cmd_code[dimm];
937 		return -EIO;
938 	}
939 	return rc;
940 }
941 
nd_intel_test_cmd_security_status(struct nfit_test * t,struct nd_intel_get_security_state * nd_cmd,unsigned int buf_len,int dimm)942 static int nd_intel_test_cmd_security_status(struct nfit_test *t,
943 		struct nd_intel_get_security_state *nd_cmd,
944 		unsigned int buf_len, int dimm)
945 {
946 	struct device *dev = &t->pdev.dev;
947 	struct nfit_test_sec *sec = &dimm_sec_info[dimm];
948 
949 	nd_cmd->status = 0;
950 	nd_cmd->state = sec->state;
951 	nd_cmd->extended_state = sec->ext_state;
952 	dev_dbg(dev, "security state (%#x) returned\n", nd_cmd->state);
953 
954 	return 0;
955 }
956 
nd_intel_test_cmd_unlock_unit(struct nfit_test * t,struct nd_intel_unlock_unit * nd_cmd,unsigned int buf_len,int dimm)957 static int nd_intel_test_cmd_unlock_unit(struct nfit_test *t,
958 		struct nd_intel_unlock_unit *nd_cmd,
959 		unsigned int buf_len, int dimm)
960 {
961 	struct device *dev = &t->pdev.dev;
962 	struct nfit_test_sec *sec = &dimm_sec_info[dimm];
963 
964 	if (!(sec->state & ND_INTEL_SEC_STATE_LOCKED) ||
965 			(sec->state & ND_INTEL_SEC_STATE_FROZEN)) {
966 		nd_cmd->status = ND_INTEL_STATUS_INVALID_STATE;
967 		dev_dbg(dev, "unlock unit: invalid state: %#x\n",
968 				sec->state);
969 	} else if (memcmp(nd_cmd->passphrase, sec->passphrase,
970 				ND_INTEL_PASSPHRASE_SIZE) != 0) {
971 		nd_cmd->status = ND_INTEL_STATUS_INVALID_PASS;
972 		dev_dbg(dev, "unlock unit: invalid passphrase\n");
973 	} else {
974 		nd_cmd->status = 0;
975 		sec->state = ND_INTEL_SEC_STATE_ENABLED;
976 		dev_dbg(dev, "Unit unlocked\n");
977 	}
978 
979 	dev_dbg(dev, "unlocking status returned: %#x\n", nd_cmd->status);
980 	return 0;
981 }
982 
nd_intel_test_cmd_set_pass(struct nfit_test * t,struct nd_intel_set_passphrase * nd_cmd,unsigned int buf_len,int dimm)983 static int nd_intel_test_cmd_set_pass(struct nfit_test *t,
984 		struct nd_intel_set_passphrase *nd_cmd,
985 		unsigned int buf_len, int dimm)
986 {
987 	struct device *dev = &t->pdev.dev;
988 	struct nfit_test_sec *sec = &dimm_sec_info[dimm];
989 
990 	if (sec->state & ND_INTEL_SEC_STATE_FROZEN) {
991 		nd_cmd->status = ND_INTEL_STATUS_INVALID_STATE;
992 		dev_dbg(dev, "set passphrase: wrong security state\n");
993 	} else if (memcmp(nd_cmd->old_pass, sec->passphrase,
994 				ND_INTEL_PASSPHRASE_SIZE) != 0) {
995 		nd_cmd->status = ND_INTEL_STATUS_INVALID_PASS;
996 		dev_dbg(dev, "set passphrase: wrong passphrase\n");
997 	} else {
998 		memcpy(sec->passphrase, nd_cmd->new_pass,
999 				ND_INTEL_PASSPHRASE_SIZE);
1000 		sec->state |= ND_INTEL_SEC_STATE_ENABLED;
1001 		nd_cmd->status = 0;
1002 		dev_dbg(dev, "passphrase updated\n");
1003 	}
1004 
1005 	return 0;
1006 }
1007 
nd_intel_test_cmd_freeze_lock(struct nfit_test * t,struct nd_intel_freeze_lock * nd_cmd,unsigned int buf_len,int dimm)1008 static int nd_intel_test_cmd_freeze_lock(struct nfit_test *t,
1009 		struct nd_intel_freeze_lock *nd_cmd,
1010 		unsigned int buf_len, int dimm)
1011 {
1012 	struct device *dev = &t->pdev.dev;
1013 	struct nfit_test_sec *sec = &dimm_sec_info[dimm];
1014 
1015 	if (!(sec->state & ND_INTEL_SEC_STATE_ENABLED)) {
1016 		nd_cmd->status = ND_INTEL_STATUS_INVALID_STATE;
1017 		dev_dbg(dev, "freeze lock: wrong security state\n");
1018 	} else {
1019 		sec->state |= ND_INTEL_SEC_STATE_FROZEN;
1020 		nd_cmd->status = 0;
1021 		dev_dbg(dev, "security frozen\n");
1022 	}
1023 
1024 	return 0;
1025 }
1026 
nd_intel_test_cmd_disable_pass(struct nfit_test * t,struct nd_intel_disable_passphrase * nd_cmd,unsigned int buf_len,int dimm)1027 static int nd_intel_test_cmd_disable_pass(struct nfit_test *t,
1028 		struct nd_intel_disable_passphrase *nd_cmd,
1029 		unsigned int buf_len, int dimm)
1030 {
1031 	struct device *dev = &t->pdev.dev;
1032 	struct nfit_test_sec *sec = &dimm_sec_info[dimm];
1033 
1034 	if (!(sec->state & ND_INTEL_SEC_STATE_ENABLED) ||
1035 			(sec->state & ND_INTEL_SEC_STATE_FROZEN)) {
1036 		nd_cmd->status = ND_INTEL_STATUS_INVALID_STATE;
1037 		dev_dbg(dev, "disable passphrase: wrong security state\n");
1038 	} else if (memcmp(nd_cmd->passphrase, sec->passphrase,
1039 				ND_INTEL_PASSPHRASE_SIZE) != 0) {
1040 		nd_cmd->status = ND_INTEL_STATUS_INVALID_PASS;
1041 		dev_dbg(dev, "disable passphrase: wrong passphrase\n");
1042 	} else {
1043 		memset(sec->passphrase, 0, ND_INTEL_PASSPHRASE_SIZE);
1044 		sec->state = 0;
1045 		dev_dbg(dev, "disable passphrase: done\n");
1046 	}
1047 
1048 	return 0;
1049 }
1050 
nd_intel_test_cmd_secure_erase(struct nfit_test * t,struct nd_intel_secure_erase * nd_cmd,unsigned int buf_len,int dimm)1051 static int nd_intel_test_cmd_secure_erase(struct nfit_test *t,
1052 		struct nd_intel_secure_erase *nd_cmd,
1053 		unsigned int buf_len, int dimm)
1054 {
1055 	struct device *dev = &t->pdev.dev;
1056 	struct nfit_test_sec *sec = &dimm_sec_info[dimm];
1057 
1058 	if (sec->state & ND_INTEL_SEC_STATE_FROZEN) {
1059 		nd_cmd->status = ND_INTEL_STATUS_INVALID_STATE;
1060 		dev_dbg(dev, "secure erase: wrong security state\n");
1061 	} else if (memcmp(nd_cmd->passphrase, sec->passphrase,
1062 				ND_INTEL_PASSPHRASE_SIZE) != 0) {
1063 		nd_cmd->status = ND_INTEL_STATUS_INVALID_PASS;
1064 		dev_dbg(dev, "secure erase: wrong passphrase\n");
1065 	} else {
1066 		if (!(sec->state & ND_INTEL_SEC_STATE_ENABLED)
1067 				&& (memcmp(nd_cmd->passphrase, zero_key,
1068 					ND_INTEL_PASSPHRASE_SIZE) != 0)) {
1069 			dev_dbg(dev, "invalid zero key\n");
1070 			return 0;
1071 		}
1072 		memset(sec->passphrase, 0, ND_INTEL_PASSPHRASE_SIZE);
1073 		memset(sec->master_passphrase, 0, ND_INTEL_PASSPHRASE_SIZE);
1074 		sec->state = 0;
1075 		sec->ext_state = ND_INTEL_SEC_ESTATE_ENABLED;
1076 		dev_dbg(dev, "secure erase: done\n");
1077 	}
1078 
1079 	return 0;
1080 }
1081 
nd_intel_test_cmd_overwrite(struct nfit_test * t,struct nd_intel_overwrite * nd_cmd,unsigned int buf_len,int dimm)1082 static int nd_intel_test_cmd_overwrite(struct nfit_test *t,
1083 		struct nd_intel_overwrite *nd_cmd,
1084 		unsigned int buf_len, int dimm)
1085 {
1086 	struct device *dev = &t->pdev.dev;
1087 	struct nfit_test_sec *sec = &dimm_sec_info[dimm];
1088 
1089 	if ((sec->state & ND_INTEL_SEC_STATE_ENABLED) &&
1090 			memcmp(nd_cmd->passphrase, sec->passphrase,
1091 				ND_INTEL_PASSPHRASE_SIZE) != 0) {
1092 		nd_cmd->status = ND_INTEL_STATUS_INVALID_PASS;
1093 		dev_dbg(dev, "overwrite: wrong passphrase\n");
1094 		return 0;
1095 	}
1096 
1097 	sec->old_state = sec->state;
1098 	sec->state = ND_INTEL_SEC_STATE_OVERWRITE;
1099 	dev_dbg(dev, "overwrite progressing.\n");
1100 	sec->overwrite_end_time = get_jiffies_64() + 5 * HZ;
1101 
1102 	return 0;
1103 }
1104 
nd_intel_test_cmd_query_overwrite(struct nfit_test * t,struct nd_intel_query_overwrite * nd_cmd,unsigned int buf_len,int dimm)1105 static int nd_intel_test_cmd_query_overwrite(struct nfit_test *t,
1106 		struct nd_intel_query_overwrite *nd_cmd,
1107 		unsigned int buf_len, int dimm)
1108 {
1109 	struct device *dev = &t->pdev.dev;
1110 	struct nfit_test_sec *sec = &dimm_sec_info[dimm];
1111 
1112 	if (!(sec->state & ND_INTEL_SEC_STATE_OVERWRITE)) {
1113 		nd_cmd->status = ND_INTEL_STATUS_OQUERY_SEQUENCE_ERR;
1114 		return 0;
1115 	}
1116 
1117 	if (time_is_before_jiffies64(sec->overwrite_end_time)) {
1118 		sec->overwrite_end_time = 0;
1119 		sec->state = sec->old_state;
1120 		sec->old_state = 0;
1121 		sec->ext_state = ND_INTEL_SEC_ESTATE_ENABLED;
1122 		dev_dbg(dev, "overwrite is complete\n");
1123 	} else
1124 		nd_cmd->status = ND_INTEL_STATUS_OQUERY_INPROGRESS;
1125 	return 0;
1126 }
1127 
nd_intel_test_cmd_master_set_pass(struct nfit_test * t,struct nd_intel_set_master_passphrase * nd_cmd,unsigned int buf_len,int dimm)1128 static int nd_intel_test_cmd_master_set_pass(struct nfit_test *t,
1129 		struct nd_intel_set_master_passphrase *nd_cmd,
1130 		unsigned int buf_len, int dimm)
1131 {
1132 	struct device *dev = &t->pdev.dev;
1133 	struct nfit_test_sec *sec = &dimm_sec_info[dimm];
1134 
1135 	if (!(sec->ext_state & ND_INTEL_SEC_ESTATE_ENABLED)) {
1136 		nd_cmd->status = ND_INTEL_STATUS_NOT_SUPPORTED;
1137 		dev_dbg(dev, "master set passphrase: in wrong state\n");
1138 	} else if (sec->ext_state & ND_INTEL_SEC_ESTATE_PLIMIT) {
1139 		nd_cmd->status = ND_INTEL_STATUS_INVALID_STATE;
1140 		dev_dbg(dev, "master set passphrase: in wrong security state\n");
1141 	} else if (memcmp(nd_cmd->old_pass, sec->master_passphrase,
1142 				ND_INTEL_PASSPHRASE_SIZE) != 0) {
1143 		nd_cmd->status = ND_INTEL_STATUS_INVALID_PASS;
1144 		dev_dbg(dev, "master set passphrase: wrong passphrase\n");
1145 	} else {
1146 		memcpy(sec->master_passphrase, nd_cmd->new_pass,
1147 				ND_INTEL_PASSPHRASE_SIZE);
1148 		sec->ext_state = ND_INTEL_SEC_ESTATE_ENABLED;
1149 		dev_dbg(dev, "master passphrase: updated\n");
1150 	}
1151 
1152 	return 0;
1153 }
1154 
nd_intel_test_cmd_master_secure_erase(struct nfit_test * t,struct nd_intel_master_secure_erase * nd_cmd,unsigned int buf_len,int dimm)1155 static int nd_intel_test_cmd_master_secure_erase(struct nfit_test *t,
1156 		struct nd_intel_master_secure_erase *nd_cmd,
1157 		unsigned int buf_len, int dimm)
1158 {
1159 	struct device *dev = &t->pdev.dev;
1160 	struct nfit_test_sec *sec = &dimm_sec_info[dimm];
1161 
1162 	if (!(sec->ext_state & ND_INTEL_SEC_ESTATE_ENABLED)) {
1163 		nd_cmd->status = ND_INTEL_STATUS_NOT_SUPPORTED;
1164 		dev_dbg(dev, "master secure erase: in wrong state\n");
1165 	} else if (sec->ext_state & ND_INTEL_SEC_ESTATE_PLIMIT) {
1166 		nd_cmd->status = ND_INTEL_STATUS_INVALID_STATE;
1167 		dev_dbg(dev, "master secure erase: in wrong security state\n");
1168 	} else if (memcmp(nd_cmd->passphrase, sec->master_passphrase,
1169 				ND_INTEL_PASSPHRASE_SIZE) != 0) {
1170 		nd_cmd->status = ND_INTEL_STATUS_INVALID_PASS;
1171 		dev_dbg(dev, "master secure erase: wrong passphrase\n");
1172 	} else {
1173 		/* we do not erase master state passphrase ever */
1174 		sec->ext_state = ND_INTEL_SEC_ESTATE_ENABLED;
1175 		memset(sec->passphrase, 0, ND_INTEL_PASSPHRASE_SIZE);
1176 		sec->state = 0;
1177 		dev_dbg(dev, "master secure erase: done\n");
1178 	}
1179 
1180 	return 0;
1181 }
1182 
1183 static unsigned long last_activate;
1184 
nvdimm_bus_intel_fw_activate_businfo(struct nfit_test * t,struct nd_intel_bus_fw_activate_businfo * nd_cmd,unsigned int buf_len)1185 static int nvdimm_bus_intel_fw_activate_businfo(struct nfit_test *t,
1186 		struct nd_intel_bus_fw_activate_businfo *nd_cmd,
1187 		unsigned int buf_len)
1188 {
1189 	int i, armed = 0;
1190 	int state;
1191 	u64 tmo;
1192 
1193 	for (i = 0; i < NUM_DCR; i++) {
1194 		struct nfit_test_fw *fw = &t->fw[i];
1195 
1196 		if (fw->armed)
1197 			armed++;
1198 	}
1199 
1200 	/*
1201 	 * Emulate 3 second activation max, and 1 second incremental
1202 	 * quiesce time per dimm requiring multiple activates to get all
1203 	 * DIMMs updated.
1204 	 */
1205 	if (armed)
1206 		state = ND_INTEL_FWA_ARMED;
1207 	else if (!last_activate || time_after(jiffies, last_activate + 3 * HZ))
1208 		state = ND_INTEL_FWA_IDLE;
1209 	else
1210 		state = ND_INTEL_FWA_BUSY;
1211 
1212 	tmo = armed * USEC_PER_SEC;
1213 	*nd_cmd = (struct nd_intel_bus_fw_activate_businfo) {
1214 		.capability = ND_INTEL_BUS_FWA_CAP_FWQUIESCE
1215 			| ND_INTEL_BUS_FWA_CAP_OSQUIESCE
1216 			| ND_INTEL_BUS_FWA_CAP_RESET,
1217 		.state = state,
1218 		.activate_tmo = tmo,
1219 		.cpu_quiesce_tmo = tmo,
1220 		.io_quiesce_tmo = tmo,
1221 		.max_quiesce_tmo = 3 * USEC_PER_SEC,
1222 	};
1223 
1224 	return 0;
1225 }
1226 
nvdimm_bus_intel_fw_activate(struct nfit_test * t,struct nd_intel_bus_fw_activate * nd_cmd,unsigned int buf_len)1227 static int nvdimm_bus_intel_fw_activate(struct nfit_test *t,
1228 		struct nd_intel_bus_fw_activate *nd_cmd,
1229 		unsigned int buf_len)
1230 {
1231 	struct nd_intel_bus_fw_activate_businfo info;
1232 	u32 status = 0;
1233 	int i;
1234 
1235 	nvdimm_bus_intel_fw_activate_businfo(t, &info, sizeof(info));
1236 	if (info.state == ND_INTEL_FWA_BUSY)
1237 		status = ND_INTEL_BUS_FWA_STATUS_BUSY;
1238 	else if (info.activate_tmo > info.max_quiesce_tmo)
1239 		status = ND_INTEL_BUS_FWA_STATUS_TMO;
1240 	else if (info.state == ND_INTEL_FWA_IDLE)
1241 		status = ND_INTEL_BUS_FWA_STATUS_NOARM;
1242 
1243 	dev_dbg(&t->pdev.dev, "status: %d\n", status);
1244 	nd_cmd->status = status;
1245 	if (status && status != ND_INTEL_BUS_FWA_STATUS_TMO)
1246 		return 0;
1247 
1248 	last_activate = jiffies;
1249 	for (i = 0; i < NUM_DCR; i++) {
1250 		struct nfit_test_fw *fw = &t->fw[i];
1251 
1252 		if (!fw->armed)
1253 			continue;
1254 		if (fw->state != FW_STATE_UPDATED)
1255 			fw->missed_activate = true;
1256 		else
1257 			fw->state = FW_STATE_NEW;
1258 		fw->armed = false;
1259 		fw->last_activate = last_activate;
1260 	}
1261 
1262 	return 0;
1263 }
1264 
nd_intel_test_cmd_fw_activate_dimminfo(struct nfit_test * t,struct nd_intel_fw_activate_dimminfo * nd_cmd,unsigned int buf_len,int dimm)1265 static int nd_intel_test_cmd_fw_activate_dimminfo(struct nfit_test *t,
1266 		struct nd_intel_fw_activate_dimminfo *nd_cmd,
1267 		unsigned int buf_len, int dimm)
1268 {
1269 	struct nd_intel_bus_fw_activate_businfo info;
1270 	struct nfit_test_fw *fw = &t->fw[dimm];
1271 	u32 result, state;
1272 
1273 	nvdimm_bus_intel_fw_activate_businfo(t, &info, sizeof(info));
1274 
1275 	if (info.state == ND_INTEL_FWA_BUSY)
1276 		state = ND_INTEL_FWA_BUSY;
1277 	else if (info.state == ND_INTEL_FWA_IDLE)
1278 		state = ND_INTEL_FWA_IDLE;
1279 	else if (fw->armed)
1280 		state = ND_INTEL_FWA_ARMED;
1281 	else
1282 		state = ND_INTEL_FWA_IDLE;
1283 
1284 	result = ND_INTEL_DIMM_FWA_NONE;
1285 	if (last_activate && fw->last_activate == last_activate &&
1286 			state == ND_INTEL_FWA_IDLE) {
1287 		if (fw->missed_activate)
1288 			result = ND_INTEL_DIMM_FWA_NOTSTAGED;
1289 		else
1290 			result = ND_INTEL_DIMM_FWA_SUCCESS;
1291 	}
1292 
1293 	*nd_cmd = (struct nd_intel_fw_activate_dimminfo) {
1294 		.result = result,
1295 		.state = state,
1296 	};
1297 
1298 	return 0;
1299 }
1300 
nd_intel_test_cmd_fw_activate_arm(struct nfit_test * t,struct nd_intel_fw_activate_arm * nd_cmd,unsigned int buf_len,int dimm)1301 static int nd_intel_test_cmd_fw_activate_arm(struct nfit_test *t,
1302 		struct nd_intel_fw_activate_arm *nd_cmd,
1303 		unsigned int buf_len, int dimm)
1304 {
1305 	struct nfit_test_fw *fw = &t->fw[dimm];
1306 
1307 	fw->armed = nd_cmd->activate_arm == ND_INTEL_DIMM_FWA_ARM;
1308 	nd_cmd->status = 0;
1309 	return 0;
1310 }
1311 
get_dimm(struct nfit_mem * nfit_mem,unsigned int func)1312 static int get_dimm(struct nfit_mem *nfit_mem, unsigned int func)
1313 {
1314 	int i;
1315 
1316 	/* lookup per-dimm data */
1317 	for (i = 0; i < ARRAY_SIZE(handle); i++)
1318 		if (__to_nfit_memdev(nfit_mem)->device_handle == handle[i])
1319 			break;
1320 	if (i >= ARRAY_SIZE(handle))
1321 		return -ENXIO;
1322 	return i;
1323 }
1324 
nfit_ctl_dbg(struct acpi_nfit_desc * acpi_desc,struct nvdimm * nvdimm,unsigned int cmd,void * buf,unsigned int len)1325 static void nfit_ctl_dbg(struct acpi_nfit_desc *acpi_desc,
1326 		struct nvdimm *nvdimm, unsigned int cmd, void *buf,
1327 		unsigned int len)
1328 {
1329 	struct nfit_test *t = container_of(acpi_desc, typeof(*t), acpi_desc);
1330 	unsigned int func = cmd;
1331 	unsigned int family = 0;
1332 
1333 	if (cmd == ND_CMD_CALL) {
1334 		struct nd_cmd_pkg *pkg = buf;
1335 
1336 		len = pkg->nd_size_in;
1337 		family = pkg->nd_family;
1338 		buf = pkg->nd_payload;
1339 		func = pkg->nd_command;
1340 	}
1341 	dev_dbg(&t->pdev.dev, "%s family: %d cmd: %d: func: %d input length: %d\n",
1342 			nvdimm ? nvdimm_name(nvdimm) : "bus", family, cmd, func,
1343 			len);
1344 	print_hex_dump_debug("nvdimm in  ", DUMP_PREFIX_OFFSET, 16, 4,
1345 			buf, min(len, 256u), true);
1346 }
1347 
nfit_test_ctl(struct nvdimm_bus_descriptor * nd_desc,struct nvdimm * nvdimm,unsigned int cmd,void * buf,unsigned int buf_len,int * cmd_rc)1348 static int nfit_test_ctl(struct nvdimm_bus_descriptor *nd_desc,
1349 		struct nvdimm *nvdimm, unsigned int cmd, void *buf,
1350 		unsigned int buf_len, int *cmd_rc)
1351 {
1352 	struct acpi_nfit_desc *acpi_desc = to_acpi_desc(nd_desc);
1353 	struct nfit_test *t = container_of(acpi_desc, typeof(*t), acpi_desc);
1354 	unsigned int func = cmd;
1355 	int i, rc = 0, __cmd_rc;
1356 
1357 	if (!cmd_rc)
1358 		cmd_rc = &__cmd_rc;
1359 	*cmd_rc = 0;
1360 
1361 	nfit_ctl_dbg(acpi_desc, nvdimm, cmd, buf, buf_len);
1362 
1363 	if (nvdimm) {
1364 		struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm);
1365 		unsigned long cmd_mask = nvdimm_cmd_mask(nvdimm);
1366 
1367 		if (!nfit_mem)
1368 			return -ENOTTY;
1369 
1370 		if (cmd == ND_CMD_CALL) {
1371 			struct nd_cmd_pkg *call_pkg = buf;
1372 
1373 			buf_len = call_pkg->nd_size_in + call_pkg->nd_size_out;
1374 			buf = (void *) call_pkg->nd_payload;
1375 			func = call_pkg->nd_command;
1376 			if (call_pkg->nd_family != nfit_mem->family)
1377 				return -ENOTTY;
1378 
1379 			i = get_dimm(nfit_mem, func);
1380 			if (i < 0)
1381 				return i;
1382 			if (i >= NUM_DCR) {
1383 				dev_WARN_ONCE(&t->pdev.dev, 1,
1384 						"ND_CMD_CALL only valid for nfit_test0\n");
1385 				return -EINVAL;
1386 			}
1387 
1388 			switch (func) {
1389 			case NVDIMM_INTEL_GET_SECURITY_STATE:
1390 				rc = nd_intel_test_cmd_security_status(t,
1391 						buf, buf_len, i);
1392 				break;
1393 			case NVDIMM_INTEL_UNLOCK_UNIT:
1394 				rc = nd_intel_test_cmd_unlock_unit(t,
1395 						buf, buf_len, i);
1396 				break;
1397 			case NVDIMM_INTEL_SET_PASSPHRASE:
1398 				rc = nd_intel_test_cmd_set_pass(t,
1399 						buf, buf_len, i);
1400 				break;
1401 			case NVDIMM_INTEL_DISABLE_PASSPHRASE:
1402 				rc = nd_intel_test_cmd_disable_pass(t,
1403 						buf, buf_len, i);
1404 				break;
1405 			case NVDIMM_INTEL_FREEZE_LOCK:
1406 				rc = nd_intel_test_cmd_freeze_lock(t,
1407 						buf, buf_len, i);
1408 				break;
1409 			case NVDIMM_INTEL_SECURE_ERASE:
1410 				rc = nd_intel_test_cmd_secure_erase(t,
1411 						buf, buf_len, i);
1412 				break;
1413 			case NVDIMM_INTEL_OVERWRITE:
1414 				rc = nd_intel_test_cmd_overwrite(t,
1415 						buf, buf_len, i);
1416 				break;
1417 			case NVDIMM_INTEL_QUERY_OVERWRITE:
1418 				rc = nd_intel_test_cmd_query_overwrite(t,
1419 						buf, buf_len, i);
1420 				break;
1421 			case NVDIMM_INTEL_SET_MASTER_PASSPHRASE:
1422 				rc = nd_intel_test_cmd_master_set_pass(t,
1423 						buf, buf_len, i);
1424 				break;
1425 			case NVDIMM_INTEL_MASTER_SECURE_ERASE:
1426 				rc = nd_intel_test_cmd_master_secure_erase(t,
1427 						buf, buf_len, i);
1428 				break;
1429 			case NVDIMM_INTEL_FW_ACTIVATE_DIMMINFO:
1430 				rc = nd_intel_test_cmd_fw_activate_dimminfo(
1431 					t, buf, buf_len, i);
1432 				break;
1433 			case NVDIMM_INTEL_FW_ACTIVATE_ARM:
1434 				rc = nd_intel_test_cmd_fw_activate_arm(
1435 					t, buf, buf_len, i);
1436 				break;
1437 			case ND_INTEL_ENABLE_LSS_STATUS:
1438 				rc = nd_intel_test_cmd_set_lss_status(t,
1439 						buf, buf_len);
1440 				break;
1441 			case ND_INTEL_FW_GET_INFO:
1442 				rc = nd_intel_test_get_fw_info(t, buf,
1443 						buf_len, i);
1444 				break;
1445 			case ND_INTEL_FW_START_UPDATE:
1446 				rc = nd_intel_test_start_update(t, buf,
1447 						buf_len, i);
1448 				break;
1449 			case ND_INTEL_FW_SEND_DATA:
1450 				rc = nd_intel_test_send_data(t, buf,
1451 						buf_len, i);
1452 				break;
1453 			case ND_INTEL_FW_FINISH_UPDATE:
1454 				rc = nd_intel_test_finish_fw(t, buf,
1455 						buf_len, i);
1456 				break;
1457 			case ND_INTEL_FW_FINISH_QUERY:
1458 				rc = nd_intel_test_finish_query(t, buf,
1459 						buf_len, i);
1460 				break;
1461 			case ND_INTEL_SMART:
1462 				rc = nfit_test_cmd_smart(buf, buf_len,
1463 						&t->smart[i]);
1464 				break;
1465 			case ND_INTEL_SMART_THRESHOLD:
1466 				rc = nfit_test_cmd_smart_threshold(buf,
1467 						buf_len,
1468 						&t->smart_threshold[i]);
1469 				break;
1470 			case ND_INTEL_SMART_SET_THRESHOLD:
1471 				rc = nfit_test_cmd_smart_set_threshold(buf,
1472 						buf_len,
1473 						&t->smart_threshold[i],
1474 						&t->smart[i],
1475 						&t->pdev.dev, t->dimm_dev[i]);
1476 				break;
1477 			case ND_INTEL_SMART_INJECT:
1478 				rc = nfit_test_cmd_smart_inject(buf,
1479 						buf_len,
1480 						&t->smart_threshold[i],
1481 						&t->smart[i],
1482 						&t->pdev.dev, t->dimm_dev[i]);
1483 				break;
1484 			default:
1485 				return -ENOTTY;
1486 			}
1487 			return override_return_code(i, func, rc);
1488 		}
1489 
1490 		if (!test_bit(cmd, &cmd_mask)
1491 				|| !test_bit(func, &nfit_mem->dsm_mask))
1492 			return -ENOTTY;
1493 
1494 		i = get_dimm(nfit_mem, func);
1495 		if (i < 0)
1496 			return i;
1497 
1498 		switch (func) {
1499 		case ND_CMD_GET_CONFIG_SIZE:
1500 			rc = nfit_test_cmd_get_config_size(buf, buf_len);
1501 			break;
1502 		case ND_CMD_GET_CONFIG_DATA:
1503 			rc = nfit_test_cmd_get_config_data(buf, buf_len,
1504 				t->label[i - t->dcr_idx]);
1505 			break;
1506 		case ND_CMD_SET_CONFIG_DATA:
1507 			rc = nfit_test_cmd_set_config_data(buf, buf_len,
1508 				t->label[i - t->dcr_idx]);
1509 			break;
1510 		default:
1511 			return -ENOTTY;
1512 		}
1513 		return override_return_code(i, func, rc);
1514 	} else {
1515 		struct ars_state *ars_state = &t->ars_state;
1516 		struct nd_cmd_pkg *call_pkg = buf;
1517 
1518 		if (!nd_desc)
1519 			return -ENOTTY;
1520 
1521 		if (cmd == ND_CMD_CALL && call_pkg->nd_family
1522 				== NVDIMM_BUS_FAMILY_NFIT) {
1523 			func = call_pkg->nd_command;
1524 			buf_len = call_pkg->nd_size_in + call_pkg->nd_size_out;
1525 			buf = (void *) call_pkg->nd_payload;
1526 
1527 			switch (func) {
1528 			case NFIT_CMD_TRANSLATE_SPA:
1529 				rc = nfit_test_cmd_translate_spa(
1530 					acpi_desc->nvdimm_bus, buf, buf_len);
1531 				return rc;
1532 			case NFIT_CMD_ARS_INJECT_SET:
1533 				rc = nfit_test_cmd_ars_error_inject(t, buf,
1534 					buf_len);
1535 				return rc;
1536 			case NFIT_CMD_ARS_INJECT_CLEAR:
1537 				rc = nfit_test_cmd_ars_inject_clear(t, buf,
1538 					buf_len);
1539 				return rc;
1540 			case NFIT_CMD_ARS_INJECT_GET:
1541 				rc = nfit_test_cmd_ars_inject_status(t, buf,
1542 					buf_len);
1543 				return rc;
1544 			default:
1545 				return -ENOTTY;
1546 			}
1547 		} else if (cmd == ND_CMD_CALL && call_pkg->nd_family
1548 				== NVDIMM_BUS_FAMILY_INTEL) {
1549 			func = call_pkg->nd_command;
1550 			buf_len = call_pkg->nd_size_in + call_pkg->nd_size_out;
1551 			buf = (void *) call_pkg->nd_payload;
1552 
1553 			switch (func) {
1554 			case NVDIMM_BUS_INTEL_FW_ACTIVATE_BUSINFO:
1555 				rc = nvdimm_bus_intel_fw_activate_businfo(t,
1556 						buf, buf_len);
1557 				return rc;
1558 			case NVDIMM_BUS_INTEL_FW_ACTIVATE:
1559 				rc = nvdimm_bus_intel_fw_activate(t, buf,
1560 						buf_len);
1561 				return rc;
1562 			default:
1563 				return -ENOTTY;
1564 			}
1565 		} else if (cmd == ND_CMD_CALL)
1566 			return -ENOTTY;
1567 
1568 		if (!nd_desc || !test_bit(cmd, &nd_desc->cmd_mask))
1569 			return -ENOTTY;
1570 
1571 		switch (func) {
1572 		case ND_CMD_ARS_CAP:
1573 			rc = nfit_test_cmd_ars_cap(buf, buf_len);
1574 			break;
1575 		case ND_CMD_ARS_START:
1576 			rc = nfit_test_cmd_ars_start(t, ars_state, buf,
1577 					buf_len, cmd_rc);
1578 			break;
1579 		case ND_CMD_ARS_STATUS:
1580 			rc = nfit_test_cmd_ars_status(ars_state, buf, buf_len,
1581 					cmd_rc);
1582 			break;
1583 		case ND_CMD_CLEAR_ERROR:
1584 			rc = nfit_test_cmd_clear_error(t, buf, buf_len, cmd_rc);
1585 			break;
1586 		default:
1587 			return -ENOTTY;
1588 		}
1589 	}
1590 
1591 	return rc;
1592 }
1593 
1594 static DEFINE_SPINLOCK(nfit_test_lock);
1595 static struct nfit_test *instances[NUM_NFITS];
1596 
release_nfit_res(void * data)1597 static void release_nfit_res(void *data)
1598 {
1599 	struct nfit_test_resource *nfit_res = data;
1600 
1601 	spin_lock(&nfit_test_lock);
1602 	list_del(&nfit_res->list);
1603 	spin_unlock(&nfit_test_lock);
1604 
1605 	if (resource_size(&nfit_res->res) >= DIMM_SIZE)
1606 		gen_pool_free(nfit_pool, nfit_res->res.start,
1607 				resource_size(&nfit_res->res));
1608 	vfree(nfit_res->buf);
1609 	kfree(nfit_res);
1610 }
1611 
__test_alloc(struct nfit_test * t,size_t size,dma_addr_t * dma,void * buf)1612 static void *__test_alloc(struct nfit_test *t, size_t size, dma_addr_t *dma,
1613 		void *buf)
1614 {
1615 	struct device *dev = &t->pdev.dev;
1616 	struct nfit_test_resource *nfit_res = kzalloc(sizeof(*nfit_res),
1617 			GFP_KERNEL);
1618 	int rc;
1619 
1620 	if (!buf || !nfit_res || !*dma)
1621 		goto err;
1622 	rc = devm_add_action(dev, release_nfit_res, nfit_res);
1623 	if (rc)
1624 		goto err;
1625 	INIT_LIST_HEAD(&nfit_res->list);
1626 	memset(buf, 0, size);
1627 	nfit_res->dev = dev;
1628 	nfit_res->buf = buf;
1629 	nfit_res->res.start = *dma;
1630 	nfit_res->res.end = *dma + size - 1;
1631 	nfit_res->res.name = "NFIT";
1632 	spin_lock_init(&nfit_res->lock);
1633 	INIT_LIST_HEAD(&nfit_res->requests);
1634 	spin_lock(&nfit_test_lock);
1635 	list_add(&nfit_res->list, &t->resources);
1636 	spin_unlock(&nfit_test_lock);
1637 
1638 	return nfit_res->buf;
1639  err:
1640 	if (*dma && size >= DIMM_SIZE)
1641 		gen_pool_free(nfit_pool, *dma, size);
1642 	if (buf)
1643 		vfree(buf);
1644 	kfree(nfit_res);
1645 	return NULL;
1646 }
1647 
test_alloc(struct nfit_test * t,size_t size,dma_addr_t * dma)1648 static void *test_alloc(struct nfit_test *t, size_t size, dma_addr_t *dma)
1649 {
1650 	struct genpool_data_align data = {
1651 		.align = SZ_128M,
1652 	};
1653 	void *buf = vmalloc(size);
1654 
1655 	if (size >= DIMM_SIZE)
1656 		*dma = gen_pool_alloc_algo(nfit_pool, size,
1657 				gen_pool_first_fit_align, &data);
1658 	else
1659 		*dma = (unsigned long) buf;
1660 	return __test_alloc(t, size, dma, buf);
1661 }
1662 
nfit_test_lookup(resource_size_t addr)1663 static struct nfit_test_resource *nfit_test_lookup(resource_size_t addr)
1664 {
1665 	int i;
1666 
1667 	for (i = 0; i < ARRAY_SIZE(instances); i++) {
1668 		struct nfit_test_resource *n, *nfit_res = NULL;
1669 		struct nfit_test *t = instances[i];
1670 
1671 		if (!t)
1672 			continue;
1673 		spin_lock(&nfit_test_lock);
1674 		list_for_each_entry(n, &t->resources, list) {
1675 			if (addr >= n->res.start && (addr < n->res.start
1676 						+ resource_size(&n->res))) {
1677 				nfit_res = n;
1678 				break;
1679 			} else if (addr >= (unsigned long) n->buf
1680 					&& (addr < (unsigned long) n->buf
1681 						+ resource_size(&n->res))) {
1682 				nfit_res = n;
1683 				break;
1684 			}
1685 		}
1686 		spin_unlock(&nfit_test_lock);
1687 		if (nfit_res)
1688 			return nfit_res;
1689 	}
1690 
1691 	return NULL;
1692 }
1693 
ars_state_init(struct device * dev,struct ars_state * ars_state)1694 static int ars_state_init(struct device *dev, struct ars_state *ars_state)
1695 {
1696 	/* for testing, only store up to n records that fit within 4k */
1697 	ars_state->ars_status = devm_kzalloc(dev,
1698 			sizeof(struct nd_cmd_ars_status) + SZ_4K, GFP_KERNEL);
1699 	if (!ars_state->ars_status)
1700 		return -ENOMEM;
1701 	spin_lock_init(&ars_state->lock);
1702 	return 0;
1703 }
1704 
put_dimms(void * data)1705 static void put_dimms(void *data)
1706 {
1707 	struct nfit_test *t = data;
1708 	int i;
1709 
1710 	for (i = 0; i < t->num_dcr; i++)
1711 		if (t->dimm_dev[i])
1712 			device_unregister(t->dimm_dev[i]);
1713 }
1714 
1715 static struct class *nfit_test_dimm;
1716 
dimm_name_to_id(struct device * dev)1717 static int dimm_name_to_id(struct device *dev)
1718 {
1719 	int dimm;
1720 
1721 	if (sscanf(dev_name(dev), "test_dimm%d", &dimm) != 1)
1722 		return -ENXIO;
1723 	return dimm;
1724 }
1725 
handle_show(struct device * dev,struct device_attribute * attr,char * buf)1726 static ssize_t handle_show(struct device *dev, struct device_attribute *attr,
1727 		char *buf)
1728 {
1729 	int dimm = dimm_name_to_id(dev);
1730 
1731 	if (dimm < 0)
1732 		return dimm;
1733 
1734 	return sprintf(buf, "%#x\n", handle[dimm]);
1735 }
1736 DEVICE_ATTR_RO(handle);
1737 
fail_cmd_show(struct device * dev,struct device_attribute * attr,char * buf)1738 static ssize_t fail_cmd_show(struct device *dev, struct device_attribute *attr,
1739 		char *buf)
1740 {
1741 	int dimm = dimm_name_to_id(dev);
1742 
1743 	if (dimm < 0)
1744 		return dimm;
1745 
1746 	return sprintf(buf, "%#lx\n", dimm_fail_cmd_flags[dimm]);
1747 }
1748 
fail_cmd_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t size)1749 static ssize_t fail_cmd_store(struct device *dev, struct device_attribute *attr,
1750 		const char *buf, size_t size)
1751 {
1752 	int dimm = dimm_name_to_id(dev);
1753 	unsigned long val;
1754 	ssize_t rc;
1755 
1756 	if (dimm < 0)
1757 		return dimm;
1758 
1759 	rc = kstrtol(buf, 0, &val);
1760 	if (rc)
1761 		return rc;
1762 
1763 	dimm_fail_cmd_flags[dimm] = val;
1764 	return size;
1765 }
1766 static DEVICE_ATTR_RW(fail_cmd);
1767 
fail_cmd_code_show(struct device * dev,struct device_attribute * attr,char * buf)1768 static ssize_t fail_cmd_code_show(struct device *dev, struct device_attribute *attr,
1769 		char *buf)
1770 {
1771 	int dimm = dimm_name_to_id(dev);
1772 
1773 	if (dimm < 0)
1774 		return dimm;
1775 
1776 	return sprintf(buf, "%d\n", dimm_fail_cmd_code[dimm]);
1777 }
1778 
fail_cmd_code_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t size)1779 static ssize_t fail_cmd_code_store(struct device *dev, struct device_attribute *attr,
1780 		const char *buf, size_t size)
1781 {
1782 	int dimm = dimm_name_to_id(dev);
1783 	unsigned long val;
1784 	ssize_t rc;
1785 
1786 	if (dimm < 0)
1787 		return dimm;
1788 
1789 	rc = kstrtol(buf, 0, &val);
1790 	if (rc)
1791 		return rc;
1792 
1793 	dimm_fail_cmd_code[dimm] = val;
1794 	return size;
1795 }
1796 static DEVICE_ATTR_RW(fail_cmd_code);
1797 
lock_dimm_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t size)1798 static ssize_t lock_dimm_store(struct device *dev,
1799 		struct device_attribute *attr, const char *buf, size_t size)
1800 {
1801 	int dimm = dimm_name_to_id(dev);
1802 	struct nfit_test_sec *sec = &dimm_sec_info[dimm];
1803 
1804 	sec->state = ND_INTEL_SEC_STATE_ENABLED | ND_INTEL_SEC_STATE_LOCKED;
1805 	return size;
1806 }
1807 static DEVICE_ATTR_WO(lock_dimm);
1808 
1809 static struct attribute *nfit_test_dimm_attributes[] = {
1810 	&dev_attr_fail_cmd.attr,
1811 	&dev_attr_fail_cmd_code.attr,
1812 	&dev_attr_handle.attr,
1813 	&dev_attr_lock_dimm.attr,
1814 	NULL,
1815 };
1816 
1817 static struct attribute_group nfit_test_dimm_attribute_group = {
1818 	.attrs = nfit_test_dimm_attributes,
1819 };
1820 
1821 static const struct attribute_group *nfit_test_dimm_attribute_groups[] = {
1822 	&nfit_test_dimm_attribute_group,
1823 	NULL,
1824 };
1825 
nfit_test_dimm_init(struct nfit_test * t)1826 static int nfit_test_dimm_init(struct nfit_test *t)
1827 {
1828 	int i;
1829 
1830 	if (devm_add_action_or_reset(&t->pdev.dev, put_dimms, t))
1831 		return -ENOMEM;
1832 	for (i = 0; i < t->num_dcr; i++) {
1833 		t->dimm_dev[i] = device_create_with_groups(nfit_test_dimm,
1834 				&t->pdev.dev, 0, NULL,
1835 				nfit_test_dimm_attribute_groups,
1836 				"test_dimm%d", i + t->dcr_idx);
1837 		if (!t->dimm_dev[i])
1838 			return -ENOMEM;
1839 	}
1840 	return 0;
1841 }
1842 
nfit_security_init(struct nfit_test * t)1843 static void nfit_security_init(struct nfit_test *t)
1844 {
1845 	int i;
1846 
1847 	for (i = 0; i < t->num_dcr; i++) {
1848 		struct nfit_test_sec *sec = &dimm_sec_info[i];
1849 
1850 		sec->ext_state = ND_INTEL_SEC_ESTATE_ENABLED;
1851 	}
1852 }
1853 
smart_init(struct nfit_test * t)1854 static void smart_init(struct nfit_test *t)
1855 {
1856 	int i;
1857 	const struct nd_intel_smart_threshold smart_t_data = {
1858 		.alarm_control = ND_INTEL_SMART_SPARE_TRIP
1859 			| ND_INTEL_SMART_TEMP_TRIP,
1860 		.media_temperature = 40 * 16,
1861 		.ctrl_temperature = 30 * 16,
1862 		.spares = 5,
1863 	};
1864 
1865 	for (i = 0; i < t->num_dcr; i++) {
1866 		memcpy(&t->smart[i], &smart_def, sizeof(smart_def));
1867 		memcpy(&t->smart_threshold[i], &smart_t_data,
1868 				sizeof(smart_t_data));
1869 	}
1870 }
1871 
sizeof_spa(struct acpi_nfit_system_address * spa)1872 static size_t sizeof_spa(struct acpi_nfit_system_address *spa)
1873 {
1874 	/* until spa location cookie support is added... */
1875 	return sizeof(*spa) - 8;
1876 }
1877 
nfit_test0_alloc(struct nfit_test * t)1878 static int nfit_test0_alloc(struct nfit_test *t)
1879 {
1880 	struct acpi_nfit_system_address *spa = NULL;
1881 	size_t nfit_size = sizeof_spa(spa) * NUM_SPA
1882 			+ sizeof(struct acpi_nfit_memory_map) * NUM_MEM
1883 			+ sizeof(struct acpi_nfit_control_region) * NUM_DCR
1884 			+ offsetof(struct acpi_nfit_control_region,
1885 					window_size) * NUM_DCR
1886 			+ sizeof(struct acpi_nfit_data_region) * NUM_BDW
1887 			+ (sizeof(struct acpi_nfit_flush_address)
1888 					+ sizeof(u64) * NUM_HINTS) * NUM_DCR
1889 			+ sizeof(struct acpi_nfit_capabilities);
1890 	int i;
1891 
1892 	t->nfit_buf = test_alloc(t, nfit_size, &t->nfit_dma);
1893 	if (!t->nfit_buf)
1894 		return -ENOMEM;
1895 	t->nfit_size = nfit_size;
1896 
1897 	t->spa_set[0] = test_alloc(t, SPA0_SIZE, &t->spa_set_dma[0]);
1898 	if (!t->spa_set[0])
1899 		return -ENOMEM;
1900 
1901 	t->spa_set[1] = test_alloc(t, SPA1_SIZE, &t->spa_set_dma[1]);
1902 	if (!t->spa_set[1])
1903 		return -ENOMEM;
1904 
1905 	t->spa_set[2] = test_alloc(t, SPA0_SIZE, &t->spa_set_dma[2]);
1906 	if (!t->spa_set[2])
1907 		return -ENOMEM;
1908 
1909 	for (i = 0; i < t->num_dcr; i++) {
1910 		t->dimm[i] = test_alloc(t, DIMM_SIZE, &t->dimm_dma[i]);
1911 		if (!t->dimm[i])
1912 			return -ENOMEM;
1913 
1914 		t->label[i] = test_alloc(t, LABEL_SIZE, &t->label_dma[i]);
1915 		if (!t->label[i])
1916 			return -ENOMEM;
1917 		sprintf(t->label[i], "label%d", i);
1918 
1919 		t->flush[i] = test_alloc(t, max(PAGE_SIZE,
1920 					sizeof(u64) * NUM_HINTS),
1921 				&t->flush_dma[i]);
1922 		if (!t->flush[i])
1923 			return -ENOMEM;
1924 	}
1925 
1926 	for (i = 0; i < t->num_dcr; i++) {
1927 		t->dcr[i] = test_alloc(t, LABEL_SIZE, &t->dcr_dma[i]);
1928 		if (!t->dcr[i])
1929 			return -ENOMEM;
1930 	}
1931 
1932 	t->_fit = test_alloc(t, sizeof(union acpi_object **), &t->_fit_dma);
1933 	if (!t->_fit)
1934 		return -ENOMEM;
1935 
1936 	if (nfit_test_dimm_init(t))
1937 		return -ENOMEM;
1938 	smart_init(t);
1939 	nfit_security_init(t);
1940 	return ars_state_init(&t->pdev.dev, &t->ars_state);
1941 }
1942 
nfit_test1_alloc(struct nfit_test * t)1943 static int nfit_test1_alloc(struct nfit_test *t)
1944 {
1945 	struct acpi_nfit_system_address *spa = NULL;
1946 	size_t nfit_size = sizeof_spa(spa) * 2
1947 		+ sizeof(struct acpi_nfit_memory_map) * 2
1948 		+ offsetof(struct acpi_nfit_control_region, window_size) * 2;
1949 	int i;
1950 
1951 	t->nfit_buf = test_alloc(t, nfit_size, &t->nfit_dma);
1952 	if (!t->nfit_buf)
1953 		return -ENOMEM;
1954 	t->nfit_size = nfit_size;
1955 
1956 	t->spa_set[0] = test_alloc(t, SPA2_SIZE, &t->spa_set_dma[0]);
1957 	if (!t->spa_set[0])
1958 		return -ENOMEM;
1959 
1960 	for (i = 0; i < t->num_dcr; i++) {
1961 		t->label[i] = test_alloc(t, LABEL_SIZE, &t->label_dma[i]);
1962 		if (!t->label[i])
1963 			return -ENOMEM;
1964 		sprintf(t->label[i], "label%d", i);
1965 	}
1966 
1967 	t->spa_set[1] = test_alloc(t, SPA_VCD_SIZE, &t->spa_set_dma[1]);
1968 	if (!t->spa_set[1])
1969 		return -ENOMEM;
1970 
1971 	if (nfit_test_dimm_init(t))
1972 		return -ENOMEM;
1973 	smart_init(t);
1974 	return ars_state_init(&t->pdev.dev, &t->ars_state);
1975 }
1976 
dcr_common_init(struct acpi_nfit_control_region * dcr)1977 static void dcr_common_init(struct acpi_nfit_control_region *dcr)
1978 {
1979 	dcr->vendor_id = 0xabcd;
1980 	dcr->device_id = 0;
1981 	dcr->revision_id = 1;
1982 	dcr->valid_fields = 1;
1983 	dcr->manufacturing_location = 0xa;
1984 	dcr->manufacturing_date = cpu_to_be16(2016);
1985 }
1986 
nfit_test0_setup(struct nfit_test * t)1987 static void nfit_test0_setup(struct nfit_test *t)
1988 {
1989 	const int flush_hint_size = sizeof(struct acpi_nfit_flush_address)
1990 		+ (sizeof(u64) * NUM_HINTS);
1991 	struct acpi_nfit_desc *acpi_desc;
1992 	struct acpi_nfit_memory_map *memdev;
1993 	void *nfit_buf = t->nfit_buf;
1994 	struct acpi_nfit_system_address *spa;
1995 	struct acpi_nfit_control_region *dcr;
1996 	struct acpi_nfit_data_region *bdw;
1997 	struct acpi_nfit_flush_address *flush;
1998 	struct acpi_nfit_capabilities *pcap;
1999 	unsigned int offset = 0, i;
2000 	unsigned long *acpi_mask;
2001 
2002 	/*
2003 	 * spa0 (interleave first half of dimm0 and dimm1, note storage
2004 	 * does not actually alias the related block-data-window
2005 	 * regions)
2006 	 */
2007 	spa = nfit_buf;
2008 	spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS;
2009 	spa->header.length = sizeof_spa(spa);
2010 	memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_PM), 16);
2011 	spa->range_index = 0+1;
2012 	spa->address = t->spa_set_dma[0];
2013 	spa->length = SPA0_SIZE;
2014 	offset += spa->header.length;
2015 
2016 	/*
2017 	 * spa1 (interleave last half of the 4 DIMMS, note storage
2018 	 * does not actually alias the related block-data-window
2019 	 * regions)
2020 	 */
2021 	spa = nfit_buf + offset;
2022 	spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS;
2023 	spa->header.length = sizeof_spa(spa);
2024 	memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_PM), 16);
2025 	spa->range_index = 1+1;
2026 	spa->address = t->spa_set_dma[1];
2027 	spa->length = SPA1_SIZE;
2028 	offset += spa->header.length;
2029 
2030 	/* spa2 (dcr0) dimm0 */
2031 	spa = nfit_buf + offset;
2032 	spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS;
2033 	spa->header.length = sizeof_spa(spa);
2034 	memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_DCR), 16);
2035 	spa->range_index = 2+1;
2036 	spa->address = t->dcr_dma[0];
2037 	spa->length = DCR_SIZE;
2038 	offset += spa->header.length;
2039 
2040 	/* spa3 (dcr1) dimm1 */
2041 	spa = nfit_buf + offset;
2042 	spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS;
2043 	spa->header.length = sizeof_spa(spa);
2044 	memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_DCR), 16);
2045 	spa->range_index = 3+1;
2046 	spa->address = t->dcr_dma[1];
2047 	spa->length = DCR_SIZE;
2048 	offset += spa->header.length;
2049 
2050 	/* spa4 (dcr2) dimm2 */
2051 	spa = nfit_buf + offset;
2052 	spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS;
2053 	spa->header.length = sizeof_spa(spa);
2054 	memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_DCR), 16);
2055 	spa->range_index = 4+1;
2056 	spa->address = t->dcr_dma[2];
2057 	spa->length = DCR_SIZE;
2058 	offset += spa->header.length;
2059 
2060 	/* spa5 (dcr3) dimm3 */
2061 	spa = nfit_buf + offset;
2062 	spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS;
2063 	spa->header.length = sizeof_spa(spa);
2064 	memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_DCR), 16);
2065 	spa->range_index = 5+1;
2066 	spa->address = t->dcr_dma[3];
2067 	spa->length = DCR_SIZE;
2068 	offset += spa->header.length;
2069 
2070 	/* spa6 (bdw for dcr0) dimm0 */
2071 	spa = nfit_buf + offset;
2072 	spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS;
2073 	spa->header.length = sizeof_spa(spa);
2074 	memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_BDW), 16);
2075 	spa->range_index = 6+1;
2076 	spa->address = t->dimm_dma[0];
2077 	spa->length = DIMM_SIZE;
2078 	offset += spa->header.length;
2079 
2080 	/* spa7 (bdw for dcr1) dimm1 */
2081 	spa = nfit_buf + offset;
2082 	spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS;
2083 	spa->header.length = sizeof_spa(spa);
2084 	memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_BDW), 16);
2085 	spa->range_index = 7+1;
2086 	spa->address = t->dimm_dma[1];
2087 	spa->length = DIMM_SIZE;
2088 	offset += spa->header.length;
2089 
2090 	/* spa8 (bdw for dcr2) dimm2 */
2091 	spa = nfit_buf + offset;
2092 	spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS;
2093 	spa->header.length = sizeof_spa(spa);
2094 	memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_BDW), 16);
2095 	spa->range_index = 8+1;
2096 	spa->address = t->dimm_dma[2];
2097 	spa->length = DIMM_SIZE;
2098 	offset += spa->header.length;
2099 
2100 	/* spa9 (bdw for dcr3) dimm3 */
2101 	spa = nfit_buf + offset;
2102 	spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS;
2103 	spa->header.length = sizeof_spa(spa);
2104 	memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_BDW), 16);
2105 	spa->range_index = 9+1;
2106 	spa->address = t->dimm_dma[3];
2107 	spa->length = DIMM_SIZE;
2108 	offset += spa->header.length;
2109 
2110 	/* mem-region0 (spa0, dimm0) */
2111 	memdev = nfit_buf + offset;
2112 	memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP;
2113 	memdev->header.length = sizeof(*memdev);
2114 	memdev->device_handle = handle[0];
2115 	memdev->physical_id = 0;
2116 	memdev->region_id = 0;
2117 	memdev->range_index = 0+1;
2118 	memdev->region_index = 4+1;
2119 	memdev->region_size = SPA0_SIZE/2;
2120 	memdev->region_offset = 1;
2121 	memdev->address = 0;
2122 	memdev->interleave_index = 0;
2123 	memdev->interleave_ways = 2;
2124 	offset += memdev->header.length;
2125 
2126 	/* mem-region1 (spa0, dimm1) */
2127 	memdev = nfit_buf + offset;
2128 	memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP;
2129 	memdev->header.length = sizeof(*memdev);
2130 	memdev->device_handle = handle[1];
2131 	memdev->physical_id = 1;
2132 	memdev->region_id = 0;
2133 	memdev->range_index = 0+1;
2134 	memdev->region_index = 5+1;
2135 	memdev->region_size = SPA0_SIZE/2;
2136 	memdev->region_offset = (1 << 8);
2137 	memdev->address = 0;
2138 	memdev->interleave_index = 0;
2139 	memdev->interleave_ways = 2;
2140 	memdev->flags = ACPI_NFIT_MEM_HEALTH_ENABLED;
2141 	offset += memdev->header.length;
2142 
2143 	/* mem-region2 (spa1, dimm0) */
2144 	memdev = nfit_buf + offset;
2145 	memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP;
2146 	memdev->header.length = sizeof(*memdev);
2147 	memdev->device_handle = handle[0];
2148 	memdev->physical_id = 0;
2149 	memdev->region_id = 1;
2150 	memdev->range_index = 1+1;
2151 	memdev->region_index = 4+1;
2152 	memdev->region_size = SPA1_SIZE/4;
2153 	memdev->region_offset = (1 << 16);
2154 	memdev->address = SPA0_SIZE/2;
2155 	memdev->interleave_index = 0;
2156 	memdev->interleave_ways = 4;
2157 	memdev->flags = ACPI_NFIT_MEM_HEALTH_ENABLED;
2158 	offset += memdev->header.length;
2159 
2160 	/* mem-region3 (spa1, dimm1) */
2161 	memdev = nfit_buf + offset;
2162 	memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP;
2163 	memdev->header.length = sizeof(*memdev);
2164 	memdev->device_handle = handle[1];
2165 	memdev->physical_id = 1;
2166 	memdev->region_id = 1;
2167 	memdev->range_index = 1+1;
2168 	memdev->region_index = 5+1;
2169 	memdev->region_size = SPA1_SIZE/4;
2170 	memdev->region_offset = (1 << 24);
2171 	memdev->address = SPA0_SIZE/2;
2172 	memdev->interleave_index = 0;
2173 	memdev->interleave_ways = 4;
2174 	offset += memdev->header.length;
2175 
2176 	/* mem-region4 (spa1, dimm2) */
2177 	memdev = nfit_buf + offset;
2178 	memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP;
2179 	memdev->header.length = sizeof(*memdev);
2180 	memdev->device_handle = handle[2];
2181 	memdev->physical_id = 2;
2182 	memdev->region_id = 0;
2183 	memdev->range_index = 1+1;
2184 	memdev->region_index = 6+1;
2185 	memdev->region_size = SPA1_SIZE/4;
2186 	memdev->region_offset = (1ULL << 32);
2187 	memdev->address = SPA0_SIZE/2;
2188 	memdev->interleave_index = 0;
2189 	memdev->interleave_ways = 4;
2190 	memdev->flags = ACPI_NFIT_MEM_HEALTH_ENABLED;
2191 	offset += memdev->header.length;
2192 
2193 	/* mem-region5 (spa1, dimm3) */
2194 	memdev = nfit_buf + offset;
2195 	memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP;
2196 	memdev->header.length = sizeof(*memdev);
2197 	memdev->device_handle = handle[3];
2198 	memdev->physical_id = 3;
2199 	memdev->region_id = 0;
2200 	memdev->range_index = 1+1;
2201 	memdev->region_index = 7+1;
2202 	memdev->region_size = SPA1_SIZE/4;
2203 	memdev->region_offset = (1ULL << 40);
2204 	memdev->address = SPA0_SIZE/2;
2205 	memdev->interleave_index = 0;
2206 	memdev->interleave_ways = 4;
2207 	offset += memdev->header.length;
2208 
2209 	/* mem-region6 (spa/dcr0, dimm0) */
2210 	memdev = nfit_buf + offset;
2211 	memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP;
2212 	memdev->header.length = sizeof(*memdev);
2213 	memdev->device_handle = handle[0];
2214 	memdev->physical_id = 0;
2215 	memdev->region_id = 0;
2216 	memdev->range_index = 2+1;
2217 	memdev->region_index = 0+1;
2218 	memdev->region_size = 0;
2219 	memdev->region_offset = 0;
2220 	memdev->address = 0;
2221 	memdev->interleave_index = 0;
2222 	memdev->interleave_ways = 1;
2223 	offset += memdev->header.length;
2224 
2225 	/* mem-region7 (spa/dcr1, dimm1) */
2226 	memdev = nfit_buf + offset;
2227 	memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP;
2228 	memdev->header.length = sizeof(*memdev);
2229 	memdev->device_handle = handle[1];
2230 	memdev->physical_id = 1;
2231 	memdev->region_id = 0;
2232 	memdev->range_index = 3+1;
2233 	memdev->region_index = 1+1;
2234 	memdev->region_size = 0;
2235 	memdev->region_offset = 0;
2236 	memdev->address = 0;
2237 	memdev->interleave_index = 0;
2238 	memdev->interleave_ways = 1;
2239 	offset += memdev->header.length;
2240 
2241 	/* mem-region8 (spa/dcr2, dimm2) */
2242 	memdev = nfit_buf + offset;
2243 	memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP;
2244 	memdev->header.length = sizeof(*memdev);
2245 	memdev->device_handle = handle[2];
2246 	memdev->physical_id = 2;
2247 	memdev->region_id = 0;
2248 	memdev->range_index = 4+1;
2249 	memdev->region_index = 2+1;
2250 	memdev->region_size = 0;
2251 	memdev->region_offset = 0;
2252 	memdev->address = 0;
2253 	memdev->interleave_index = 0;
2254 	memdev->interleave_ways = 1;
2255 	offset += memdev->header.length;
2256 
2257 	/* mem-region9 (spa/dcr3, dimm3) */
2258 	memdev = nfit_buf + offset;
2259 	memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP;
2260 	memdev->header.length = sizeof(*memdev);
2261 	memdev->device_handle = handle[3];
2262 	memdev->physical_id = 3;
2263 	memdev->region_id = 0;
2264 	memdev->range_index = 5+1;
2265 	memdev->region_index = 3+1;
2266 	memdev->region_size = 0;
2267 	memdev->region_offset = 0;
2268 	memdev->address = 0;
2269 	memdev->interleave_index = 0;
2270 	memdev->interleave_ways = 1;
2271 	offset += memdev->header.length;
2272 
2273 	/* mem-region10 (spa/bdw0, dimm0) */
2274 	memdev = nfit_buf + offset;
2275 	memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP;
2276 	memdev->header.length = sizeof(*memdev);
2277 	memdev->device_handle = handle[0];
2278 	memdev->physical_id = 0;
2279 	memdev->region_id = 0;
2280 	memdev->range_index = 6+1;
2281 	memdev->region_index = 0+1;
2282 	memdev->region_size = 0;
2283 	memdev->region_offset = 0;
2284 	memdev->address = 0;
2285 	memdev->interleave_index = 0;
2286 	memdev->interleave_ways = 1;
2287 	offset += memdev->header.length;
2288 
2289 	/* mem-region11 (spa/bdw1, dimm1) */
2290 	memdev = nfit_buf + offset;
2291 	memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP;
2292 	memdev->header.length = sizeof(*memdev);
2293 	memdev->device_handle = handle[1];
2294 	memdev->physical_id = 1;
2295 	memdev->region_id = 0;
2296 	memdev->range_index = 7+1;
2297 	memdev->region_index = 1+1;
2298 	memdev->region_size = 0;
2299 	memdev->region_offset = 0;
2300 	memdev->address = 0;
2301 	memdev->interleave_index = 0;
2302 	memdev->interleave_ways = 1;
2303 	offset += memdev->header.length;
2304 
2305 	/* mem-region12 (spa/bdw2, dimm2) */
2306 	memdev = nfit_buf + offset;
2307 	memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP;
2308 	memdev->header.length = sizeof(*memdev);
2309 	memdev->device_handle = handle[2];
2310 	memdev->physical_id = 2;
2311 	memdev->region_id = 0;
2312 	memdev->range_index = 8+1;
2313 	memdev->region_index = 2+1;
2314 	memdev->region_size = 0;
2315 	memdev->region_offset = 0;
2316 	memdev->address = 0;
2317 	memdev->interleave_index = 0;
2318 	memdev->interleave_ways = 1;
2319 	offset += memdev->header.length;
2320 
2321 	/* mem-region13 (spa/dcr3, dimm3) */
2322 	memdev = nfit_buf + offset;
2323 	memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP;
2324 	memdev->header.length = sizeof(*memdev);
2325 	memdev->device_handle = handle[3];
2326 	memdev->physical_id = 3;
2327 	memdev->region_id = 0;
2328 	memdev->range_index = 9+1;
2329 	memdev->region_index = 3+1;
2330 	memdev->region_size = 0;
2331 	memdev->region_offset = 0;
2332 	memdev->address = 0;
2333 	memdev->interleave_index = 0;
2334 	memdev->interleave_ways = 1;
2335 	memdev->flags = ACPI_NFIT_MEM_HEALTH_ENABLED;
2336 	offset += memdev->header.length;
2337 
2338 	/* dcr-descriptor0: blk */
2339 	dcr = nfit_buf + offset;
2340 	dcr->header.type = ACPI_NFIT_TYPE_CONTROL_REGION;
2341 	dcr->header.length = sizeof(*dcr);
2342 	dcr->region_index = 0+1;
2343 	dcr_common_init(dcr);
2344 	dcr->serial_number = ~handle[0];
2345 	dcr->code = NFIT_FIC_BLK;
2346 	dcr->windows = 1;
2347 	dcr->window_size = DCR_SIZE;
2348 	dcr->command_offset = 0;
2349 	dcr->command_size = 8;
2350 	dcr->status_offset = 8;
2351 	dcr->status_size = 4;
2352 	offset += dcr->header.length;
2353 
2354 	/* dcr-descriptor1: blk */
2355 	dcr = nfit_buf + offset;
2356 	dcr->header.type = ACPI_NFIT_TYPE_CONTROL_REGION;
2357 	dcr->header.length = sizeof(*dcr);
2358 	dcr->region_index = 1+1;
2359 	dcr_common_init(dcr);
2360 	dcr->serial_number = ~handle[1];
2361 	dcr->code = NFIT_FIC_BLK;
2362 	dcr->windows = 1;
2363 	dcr->window_size = DCR_SIZE;
2364 	dcr->command_offset = 0;
2365 	dcr->command_size = 8;
2366 	dcr->status_offset = 8;
2367 	dcr->status_size = 4;
2368 	offset += dcr->header.length;
2369 
2370 	/* dcr-descriptor2: blk */
2371 	dcr = nfit_buf + offset;
2372 	dcr->header.type = ACPI_NFIT_TYPE_CONTROL_REGION;
2373 	dcr->header.length = sizeof(*dcr);
2374 	dcr->region_index = 2+1;
2375 	dcr_common_init(dcr);
2376 	dcr->serial_number = ~handle[2];
2377 	dcr->code = NFIT_FIC_BLK;
2378 	dcr->windows = 1;
2379 	dcr->window_size = DCR_SIZE;
2380 	dcr->command_offset = 0;
2381 	dcr->command_size = 8;
2382 	dcr->status_offset = 8;
2383 	dcr->status_size = 4;
2384 	offset += dcr->header.length;
2385 
2386 	/* dcr-descriptor3: blk */
2387 	dcr = nfit_buf + offset;
2388 	dcr->header.type = ACPI_NFIT_TYPE_CONTROL_REGION;
2389 	dcr->header.length = sizeof(*dcr);
2390 	dcr->region_index = 3+1;
2391 	dcr_common_init(dcr);
2392 	dcr->serial_number = ~handle[3];
2393 	dcr->code = NFIT_FIC_BLK;
2394 	dcr->windows = 1;
2395 	dcr->window_size = DCR_SIZE;
2396 	dcr->command_offset = 0;
2397 	dcr->command_size = 8;
2398 	dcr->status_offset = 8;
2399 	dcr->status_size = 4;
2400 	offset += dcr->header.length;
2401 
2402 	/* dcr-descriptor0: pmem */
2403 	dcr = nfit_buf + offset;
2404 	dcr->header.type = ACPI_NFIT_TYPE_CONTROL_REGION;
2405 	dcr->header.length = offsetof(struct acpi_nfit_control_region,
2406 			window_size);
2407 	dcr->region_index = 4+1;
2408 	dcr_common_init(dcr);
2409 	dcr->serial_number = ~handle[0];
2410 	dcr->code = NFIT_FIC_BYTEN;
2411 	dcr->windows = 0;
2412 	offset += dcr->header.length;
2413 
2414 	/* dcr-descriptor1: pmem */
2415 	dcr = nfit_buf + offset;
2416 	dcr->header.type = ACPI_NFIT_TYPE_CONTROL_REGION;
2417 	dcr->header.length = offsetof(struct acpi_nfit_control_region,
2418 			window_size);
2419 	dcr->region_index = 5+1;
2420 	dcr_common_init(dcr);
2421 	dcr->serial_number = ~handle[1];
2422 	dcr->code = NFIT_FIC_BYTEN;
2423 	dcr->windows = 0;
2424 	offset += dcr->header.length;
2425 
2426 	/* dcr-descriptor2: pmem */
2427 	dcr = nfit_buf + offset;
2428 	dcr->header.type = ACPI_NFIT_TYPE_CONTROL_REGION;
2429 	dcr->header.length = offsetof(struct acpi_nfit_control_region,
2430 			window_size);
2431 	dcr->region_index = 6+1;
2432 	dcr_common_init(dcr);
2433 	dcr->serial_number = ~handle[2];
2434 	dcr->code = NFIT_FIC_BYTEN;
2435 	dcr->windows = 0;
2436 	offset += dcr->header.length;
2437 
2438 	/* dcr-descriptor3: pmem */
2439 	dcr = nfit_buf + offset;
2440 	dcr->header.type = ACPI_NFIT_TYPE_CONTROL_REGION;
2441 	dcr->header.length = offsetof(struct acpi_nfit_control_region,
2442 			window_size);
2443 	dcr->region_index = 7+1;
2444 	dcr_common_init(dcr);
2445 	dcr->serial_number = ~handle[3];
2446 	dcr->code = NFIT_FIC_BYTEN;
2447 	dcr->windows = 0;
2448 	offset += dcr->header.length;
2449 
2450 	/* bdw0 (spa/dcr0, dimm0) */
2451 	bdw = nfit_buf + offset;
2452 	bdw->header.type = ACPI_NFIT_TYPE_DATA_REGION;
2453 	bdw->header.length = sizeof(*bdw);
2454 	bdw->region_index = 0+1;
2455 	bdw->windows = 1;
2456 	bdw->offset = 0;
2457 	bdw->size = BDW_SIZE;
2458 	bdw->capacity = DIMM_SIZE;
2459 	bdw->start_address = 0;
2460 	offset += bdw->header.length;
2461 
2462 	/* bdw1 (spa/dcr1, dimm1) */
2463 	bdw = nfit_buf + offset;
2464 	bdw->header.type = ACPI_NFIT_TYPE_DATA_REGION;
2465 	bdw->header.length = sizeof(*bdw);
2466 	bdw->region_index = 1+1;
2467 	bdw->windows = 1;
2468 	bdw->offset = 0;
2469 	bdw->size = BDW_SIZE;
2470 	bdw->capacity = DIMM_SIZE;
2471 	bdw->start_address = 0;
2472 	offset += bdw->header.length;
2473 
2474 	/* bdw2 (spa/dcr2, dimm2) */
2475 	bdw = nfit_buf + offset;
2476 	bdw->header.type = ACPI_NFIT_TYPE_DATA_REGION;
2477 	bdw->header.length = sizeof(*bdw);
2478 	bdw->region_index = 2+1;
2479 	bdw->windows = 1;
2480 	bdw->offset = 0;
2481 	bdw->size = BDW_SIZE;
2482 	bdw->capacity = DIMM_SIZE;
2483 	bdw->start_address = 0;
2484 	offset += bdw->header.length;
2485 
2486 	/* bdw3 (spa/dcr3, dimm3) */
2487 	bdw = nfit_buf + offset;
2488 	bdw->header.type = ACPI_NFIT_TYPE_DATA_REGION;
2489 	bdw->header.length = sizeof(*bdw);
2490 	bdw->region_index = 3+1;
2491 	bdw->windows = 1;
2492 	bdw->offset = 0;
2493 	bdw->size = BDW_SIZE;
2494 	bdw->capacity = DIMM_SIZE;
2495 	bdw->start_address = 0;
2496 	offset += bdw->header.length;
2497 
2498 	/* flush0 (dimm0) */
2499 	flush = nfit_buf + offset;
2500 	flush->header.type = ACPI_NFIT_TYPE_FLUSH_ADDRESS;
2501 	flush->header.length = flush_hint_size;
2502 	flush->device_handle = handle[0];
2503 	flush->hint_count = NUM_HINTS;
2504 	for (i = 0; i < NUM_HINTS; i++)
2505 		flush->hint_address[i] = t->flush_dma[0] + i * sizeof(u64);
2506 	offset += flush->header.length;
2507 
2508 	/* flush1 (dimm1) */
2509 	flush = nfit_buf + offset;
2510 	flush->header.type = ACPI_NFIT_TYPE_FLUSH_ADDRESS;
2511 	flush->header.length = flush_hint_size;
2512 	flush->device_handle = handle[1];
2513 	flush->hint_count = NUM_HINTS;
2514 	for (i = 0; i < NUM_HINTS; i++)
2515 		flush->hint_address[i] = t->flush_dma[1] + i * sizeof(u64);
2516 	offset += flush->header.length;
2517 
2518 	/* flush2 (dimm2) */
2519 	flush = nfit_buf + offset;
2520 	flush->header.type = ACPI_NFIT_TYPE_FLUSH_ADDRESS;
2521 	flush->header.length = flush_hint_size;
2522 	flush->device_handle = handle[2];
2523 	flush->hint_count = NUM_HINTS;
2524 	for (i = 0; i < NUM_HINTS; i++)
2525 		flush->hint_address[i] = t->flush_dma[2] + i * sizeof(u64);
2526 	offset += flush->header.length;
2527 
2528 	/* flush3 (dimm3) */
2529 	flush = nfit_buf + offset;
2530 	flush->header.type = ACPI_NFIT_TYPE_FLUSH_ADDRESS;
2531 	flush->header.length = flush_hint_size;
2532 	flush->device_handle = handle[3];
2533 	flush->hint_count = NUM_HINTS;
2534 	for (i = 0; i < NUM_HINTS; i++)
2535 		flush->hint_address[i] = t->flush_dma[3] + i * sizeof(u64);
2536 	offset += flush->header.length;
2537 
2538 	/* platform capabilities */
2539 	pcap = nfit_buf + offset;
2540 	pcap->header.type = ACPI_NFIT_TYPE_CAPABILITIES;
2541 	pcap->header.length = sizeof(*pcap);
2542 	pcap->highest_capability = 1;
2543 	pcap->capabilities = ACPI_NFIT_CAPABILITY_MEM_FLUSH;
2544 	offset += pcap->header.length;
2545 
2546 	if (t->setup_hotplug) {
2547 		/* dcr-descriptor4: blk */
2548 		dcr = nfit_buf + offset;
2549 		dcr->header.type = ACPI_NFIT_TYPE_CONTROL_REGION;
2550 		dcr->header.length = sizeof(*dcr);
2551 		dcr->region_index = 8+1;
2552 		dcr_common_init(dcr);
2553 		dcr->serial_number = ~handle[4];
2554 		dcr->code = NFIT_FIC_BLK;
2555 		dcr->windows = 1;
2556 		dcr->window_size = DCR_SIZE;
2557 		dcr->command_offset = 0;
2558 		dcr->command_size = 8;
2559 		dcr->status_offset = 8;
2560 		dcr->status_size = 4;
2561 		offset += dcr->header.length;
2562 
2563 		/* dcr-descriptor4: pmem */
2564 		dcr = nfit_buf + offset;
2565 		dcr->header.type = ACPI_NFIT_TYPE_CONTROL_REGION;
2566 		dcr->header.length = offsetof(struct acpi_nfit_control_region,
2567 				window_size);
2568 		dcr->region_index = 9+1;
2569 		dcr_common_init(dcr);
2570 		dcr->serial_number = ~handle[4];
2571 		dcr->code = NFIT_FIC_BYTEN;
2572 		dcr->windows = 0;
2573 		offset += dcr->header.length;
2574 
2575 		/* bdw4 (spa/dcr4, dimm4) */
2576 		bdw = nfit_buf + offset;
2577 		bdw->header.type = ACPI_NFIT_TYPE_DATA_REGION;
2578 		bdw->header.length = sizeof(*bdw);
2579 		bdw->region_index = 8+1;
2580 		bdw->windows = 1;
2581 		bdw->offset = 0;
2582 		bdw->size = BDW_SIZE;
2583 		bdw->capacity = DIMM_SIZE;
2584 		bdw->start_address = 0;
2585 		offset += bdw->header.length;
2586 
2587 		/* spa10 (dcr4) dimm4 */
2588 		spa = nfit_buf + offset;
2589 		spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS;
2590 		spa->header.length = sizeof_spa(spa);
2591 		memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_DCR), 16);
2592 		spa->range_index = 10+1;
2593 		spa->address = t->dcr_dma[4];
2594 		spa->length = DCR_SIZE;
2595 		offset += spa->header.length;
2596 
2597 		/*
2598 		 * spa11 (single-dimm interleave for hotplug, note storage
2599 		 * does not actually alias the related block-data-window
2600 		 * regions)
2601 		 */
2602 		spa = nfit_buf + offset;
2603 		spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS;
2604 		spa->header.length = sizeof_spa(spa);
2605 		memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_PM), 16);
2606 		spa->range_index = 11+1;
2607 		spa->address = t->spa_set_dma[2];
2608 		spa->length = SPA0_SIZE;
2609 		offset += spa->header.length;
2610 
2611 		/* spa12 (bdw for dcr4) dimm4 */
2612 		spa = nfit_buf + offset;
2613 		spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS;
2614 		spa->header.length = sizeof_spa(spa);
2615 		memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_BDW), 16);
2616 		spa->range_index = 12+1;
2617 		spa->address = t->dimm_dma[4];
2618 		spa->length = DIMM_SIZE;
2619 		offset += spa->header.length;
2620 
2621 		/* mem-region14 (spa/dcr4, dimm4) */
2622 		memdev = nfit_buf + offset;
2623 		memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP;
2624 		memdev->header.length = sizeof(*memdev);
2625 		memdev->device_handle = handle[4];
2626 		memdev->physical_id = 4;
2627 		memdev->region_id = 0;
2628 		memdev->range_index = 10+1;
2629 		memdev->region_index = 8+1;
2630 		memdev->region_size = 0;
2631 		memdev->region_offset = 0;
2632 		memdev->address = 0;
2633 		memdev->interleave_index = 0;
2634 		memdev->interleave_ways = 1;
2635 		offset += memdev->header.length;
2636 
2637 		/* mem-region15 (spa11, dimm4) */
2638 		memdev = nfit_buf + offset;
2639 		memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP;
2640 		memdev->header.length = sizeof(*memdev);
2641 		memdev->device_handle = handle[4];
2642 		memdev->physical_id = 4;
2643 		memdev->region_id = 0;
2644 		memdev->range_index = 11+1;
2645 		memdev->region_index = 9+1;
2646 		memdev->region_size = SPA0_SIZE;
2647 		memdev->region_offset = (1ULL << 48);
2648 		memdev->address = 0;
2649 		memdev->interleave_index = 0;
2650 		memdev->interleave_ways = 1;
2651 		memdev->flags = ACPI_NFIT_MEM_HEALTH_ENABLED;
2652 		offset += memdev->header.length;
2653 
2654 		/* mem-region16 (spa/bdw4, dimm4) */
2655 		memdev = nfit_buf + offset;
2656 		memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP;
2657 		memdev->header.length = sizeof(*memdev);
2658 		memdev->device_handle = handle[4];
2659 		memdev->physical_id = 4;
2660 		memdev->region_id = 0;
2661 		memdev->range_index = 12+1;
2662 		memdev->region_index = 8+1;
2663 		memdev->region_size = 0;
2664 		memdev->region_offset = 0;
2665 		memdev->address = 0;
2666 		memdev->interleave_index = 0;
2667 		memdev->interleave_ways = 1;
2668 		offset += memdev->header.length;
2669 
2670 		/* flush3 (dimm4) */
2671 		flush = nfit_buf + offset;
2672 		flush->header.type = ACPI_NFIT_TYPE_FLUSH_ADDRESS;
2673 		flush->header.length = flush_hint_size;
2674 		flush->device_handle = handle[4];
2675 		flush->hint_count = NUM_HINTS;
2676 		for (i = 0; i < NUM_HINTS; i++)
2677 			flush->hint_address[i] = t->flush_dma[4]
2678 				+ i * sizeof(u64);
2679 		offset += flush->header.length;
2680 
2681 		/* sanity check to make sure we've filled the buffer */
2682 		WARN_ON(offset != t->nfit_size);
2683 	}
2684 
2685 	t->nfit_filled = offset;
2686 
2687 	post_ars_status(&t->ars_state, &t->badrange, t->spa_set_dma[0],
2688 			SPA0_SIZE);
2689 
2690 	acpi_desc = &t->acpi_desc;
2691 	set_bit(ND_CMD_GET_CONFIG_SIZE, &acpi_desc->dimm_cmd_force_en);
2692 	set_bit(ND_CMD_GET_CONFIG_DATA, &acpi_desc->dimm_cmd_force_en);
2693 	set_bit(ND_CMD_SET_CONFIG_DATA, &acpi_desc->dimm_cmd_force_en);
2694 	set_bit(ND_INTEL_SMART, &acpi_desc->dimm_cmd_force_en);
2695 	set_bit(ND_INTEL_SMART_THRESHOLD, &acpi_desc->dimm_cmd_force_en);
2696 	set_bit(ND_INTEL_SMART_SET_THRESHOLD, &acpi_desc->dimm_cmd_force_en);
2697 	set_bit(ND_INTEL_SMART_INJECT, &acpi_desc->dimm_cmd_force_en);
2698 	set_bit(ND_CMD_ARS_CAP, &acpi_desc->bus_cmd_force_en);
2699 	set_bit(ND_CMD_ARS_START, &acpi_desc->bus_cmd_force_en);
2700 	set_bit(ND_CMD_ARS_STATUS, &acpi_desc->bus_cmd_force_en);
2701 	set_bit(ND_CMD_CLEAR_ERROR, &acpi_desc->bus_cmd_force_en);
2702 	set_bit(ND_CMD_CALL, &acpi_desc->bus_cmd_force_en);
2703 	set_bit(NFIT_CMD_TRANSLATE_SPA, &acpi_desc->bus_dsm_mask);
2704 	set_bit(NFIT_CMD_ARS_INJECT_SET, &acpi_desc->bus_dsm_mask);
2705 	set_bit(NFIT_CMD_ARS_INJECT_CLEAR, &acpi_desc->bus_dsm_mask);
2706 	set_bit(NFIT_CMD_ARS_INJECT_GET, &acpi_desc->bus_dsm_mask);
2707 	set_bit(ND_INTEL_FW_GET_INFO, &acpi_desc->dimm_cmd_force_en);
2708 	set_bit(ND_INTEL_FW_START_UPDATE, &acpi_desc->dimm_cmd_force_en);
2709 	set_bit(ND_INTEL_FW_SEND_DATA, &acpi_desc->dimm_cmd_force_en);
2710 	set_bit(ND_INTEL_FW_FINISH_UPDATE, &acpi_desc->dimm_cmd_force_en);
2711 	set_bit(ND_INTEL_FW_FINISH_QUERY, &acpi_desc->dimm_cmd_force_en);
2712 	set_bit(ND_INTEL_ENABLE_LSS_STATUS, &acpi_desc->dimm_cmd_force_en);
2713 	set_bit(NVDIMM_INTEL_GET_SECURITY_STATE,
2714 			&acpi_desc->dimm_cmd_force_en);
2715 	set_bit(NVDIMM_INTEL_SET_PASSPHRASE, &acpi_desc->dimm_cmd_force_en);
2716 	set_bit(NVDIMM_INTEL_DISABLE_PASSPHRASE,
2717 			&acpi_desc->dimm_cmd_force_en);
2718 	set_bit(NVDIMM_INTEL_UNLOCK_UNIT, &acpi_desc->dimm_cmd_force_en);
2719 	set_bit(NVDIMM_INTEL_FREEZE_LOCK, &acpi_desc->dimm_cmd_force_en);
2720 	set_bit(NVDIMM_INTEL_SECURE_ERASE, &acpi_desc->dimm_cmd_force_en);
2721 	set_bit(NVDIMM_INTEL_OVERWRITE, &acpi_desc->dimm_cmd_force_en);
2722 	set_bit(NVDIMM_INTEL_QUERY_OVERWRITE, &acpi_desc->dimm_cmd_force_en);
2723 	set_bit(NVDIMM_INTEL_SET_MASTER_PASSPHRASE,
2724 			&acpi_desc->dimm_cmd_force_en);
2725 	set_bit(NVDIMM_INTEL_MASTER_SECURE_ERASE,
2726 			&acpi_desc->dimm_cmd_force_en);
2727 	set_bit(NVDIMM_INTEL_FW_ACTIVATE_DIMMINFO, &acpi_desc->dimm_cmd_force_en);
2728 	set_bit(NVDIMM_INTEL_FW_ACTIVATE_ARM, &acpi_desc->dimm_cmd_force_en);
2729 
2730 	acpi_mask = &acpi_desc->family_dsm_mask[NVDIMM_BUS_FAMILY_INTEL];
2731 	set_bit(NVDIMM_BUS_INTEL_FW_ACTIVATE_BUSINFO, acpi_mask);
2732 	set_bit(NVDIMM_BUS_INTEL_FW_ACTIVATE, acpi_mask);
2733 }
2734 
nfit_test1_setup(struct nfit_test * t)2735 static void nfit_test1_setup(struct nfit_test *t)
2736 {
2737 	size_t offset;
2738 	void *nfit_buf = t->nfit_buf;
2739 	struct acpi_nfit_memory_map *memdev;
2740 	struct acpi_nfit_control_region *dcr;
2741 	struct acpi_nfit_system_address *spa;
2742 	struct acpi_nfit_desc *acpi_desc;
2743 
2744 	offset = 0;
2745 	/* spa0 (flat range with no bdw aliasing) */
2746 	spa = nfit_buf + offset;
2747 	spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS;
2748 	spa->header.length = sizeof_spa(spa);
2749 	memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_PM), 16);
2750 	spa->range_index = 0+1;
2751 	spa->address = t->spa_set_dma[0];
2752 	spa->length = SPA2_SIZE;
2753 	offset += spa->header.length;
2754 
2755 	/* virtual cd region */
2756 	spa = nfit_buf + offset;
2757 	spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS;
2758 	spa->header.length = sizeof_spa(spa);
2759 	memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_VCD), 16);
2760 	spa->range_index = 0;
2761 	spa->address = t->spa_set_dma[1];
2762 	spa->length = SPA_VCD_SIZE;
2763 	offset += spa->header.length;
2764 
2765 	/* mem-region0 (spa0, dimm0) */
2766 	memdev = nfit_buf + offset;
2767 	memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP;
2768 	memdev->header.length = sizeof(*memdev);
2769 	memdev->device_handle = handle[5];
2770 	memdev->physical_id = 0;
2771 	memdev->region_id = 0;
2772 	memdev->range_index = 0+1;
2773 	memdev->region_index = 0+1;
2774 	memdev->region_size = SPA2_SIZE;
2775 	memdev->region_offset = 0;
2776 	memdev->address = 0;
2777 	memdev->interleave_index = 0;
2778 	memdev->interleave_ways = 1;
2779 	memdev->flags = ACPI_NFIT_MEM_SAVE_FAILED | ACPI_NFIT_MEM_RESTORE_FAILED
2780 		| ACPI_NFIT_MEM_FLUSH_FAILED | ACPI_NFIT_MEM_HEALTH_OBSERVED
2781 		| ACPI_NFIT_MEM_NOT_ARMED;
2782 	offset += memdev->header.length;
2783 
2784 	/* dcr-descriptor0 */
2785 	dcr = nfit_buf + offset;
2786 	dcr->header.type = ACPI_NFIT_TYPE_CONTROL_REGION;
2787 	dcr->header.length = offsetof(struct acpi_nfit_control_region,
2788 			window_size);
2789 	dcr->region_index = 0+1;
2790 	dcr_common_init(dcr);
2791 	dcr->serial_number = ~handle[5];
2792 	dcr->code = NFIT_FIC_BYTE;
2793 	dcr->windows = 0;
2794 	offset += dcr->header.length;
2795 
2796 	memdev = nfit_buf + offset;
2797 	memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP;
2798 	memdev->header.length = sizeof(*memdev);
2799 	memdev->device_handle = handle[6];
2800 	memdev->physical_id = 0;
2801 	memdev->region_id = 0;
2802 	memdev->range_index = 0;
2803 	memdev->region_index = 0+2;
2804 	memdev->region_size = SPA2_SIZE;
2805 	memdev->region_offset = 0;
2806 	memdev->address = 0;
2807 	memdev->interleave_index = 0;
2808 	memdev->interleave_ways = 1;
2809 	memdev->flags = ACPI_NFIT_MEM_MAP_FAILED;
2810 	offset += memdev->header.length;
2811 
2812 	/* dcr-descriptor1 */
2813 	dcr = nfit_buf + offset;
2814 	dcr->header.type = ACPI_NFIT_TYPE_CONTROL_REGION;
2815 	dcr->header.length = offsetof(struct acpi_nfit_control_region,
2816 			window_size);
2817 	dcr->region_index = 0+2;
2818 	dcr_common_init(dcr);
2819 	dcr->serial_number = ~handle[6];
2820 	dcr->code = NFIT_FIC_BYTE;
2821 	dcr->windows = 0;
2822 	offset += dcr->header.length;
2823 
2824 	/* sanity check to make sure we've filled the buffer */
2825 	WARN_ON(offset != t->nfit_size);
2826 
2827 	t->nfit_filled = offset;
2828 
2829 	post_ars_status(&t->ars_state, &t->badrange, t->spa_set_dma[0],
2830 			SPA2_SIZE);
2831 
2832 	acpi_desc = &t->acpi_desc;
2833 	set_bit(ND_CMD_ARS_CAP, &acpi_desc->bus_cmd_force_en);
2834 	set_bit(ND_CMD_ARS_START, &acpi_desc->bus_cmd_force_en);
2835 	set_bit(ND_CMD_ARS_STATUS, &acpi_desc->bus_cmd_force_en);
2836 	set_bit(ND_CMD_CLEAR_ERROR, &acpi_desc->bus_cmd_force_en);
2837 	set_bit(ND_INTEL_ENABLE_LSS_STATUS, &acpi_desc->dimm_cmd_force_en);
2838 	set_bit(ND_CMD_GET_CONFIG_SIZE, &acpi_desc->dimm_cmd_force_en);
2839 	set_bit(ND_CMD_GET_CONFIG_DATA, &acpi_desc->dimm_cmd_force_en);
2840 	set_bit(ND_CMD_SET_CONFIG_DATA, &acpi_desc->dimm_cmd_force_en);
2841 }
2842 
2843 static unsigned long nfit_ctl_handle;
2844 
2845 union acpi_object *result;
2846 
nfit_test_evaluate_dsm(acpi_handle handle,const guid_t * guid,u64 rev,u64 func,union acpi_object * argv4)2847 static union acpi_object *nfit_test_evaluate_dsm(acpi_handle handle,
2848 		const guid_t *guid, u64 rev, u64 func, union acpi_object *argv4)
2849 {
2850 	if (handle != &nfit_ctl_handle)
2851 		return ERR_PTR(-ENXIO);
2852 
2853 	return result;
2854 }
2855 
setup_result(void * buf,size_t size)2856 static int setup_result(void *buf, size_t size)
2857 {
2858 	result = kmalloc(sizeof(union acpi_object) + size, GFP_KERNEL);
2859 	if (!result)
2860 		return -ENOMEM;
2861 	result->package.type = ACPI_TYPE_BUFFER,
2862 	result->buffer.pointer = (void *) (result + 1);
2863 	result->buffer.length = size;
2864 	memcpy(result->buffer.pointer, buf, size);
2865 	memset(buf, 0, size);
2866 	return 0;
2867 }
2868 
nfit_ctl_test(struct device * dev)2869 static int nfit_ctl_test(struct device *dev)
2870 {
2871 	int rc, cmd_rc;
2872 	struct nvdimm *nvdimm;
2873 	struct acpi_device *adev;
2874 	struct nfit_mem *nfit_mem;
2875 	struct nd_ars_record *record;
2876 	struct acpi_nfit_desc *acpi_desc;
2877 	const u64 test_val = 0x0123456789abcdefULL;
2878 	unsigned long mask, cmd_size, offset;
2879 	struct nfit_ctl_test_cmd {
2880 		struct nd_cmd_pkg pkg;
2881 		union {
2882 			struct nd_cmd_get_config_size cfg_size;
2883 			struct nd_cmd_clear_error clear_err;
2884 			struct nd_cmd_ars_status ars_stat;
2885 			struct nd_cmd_ars_cap ars_cap;
2886 			struct nd_intel_bus_fw_activate_businfo fwa_info;
2887 			char buf[sizeof(struct nd_cmd_ars_status)
2888 				+ sizeof(struct nd_ars_record)];
2889 		};
2890 	} cmd;
2891 
2892 	adev = devm_kzalloc(dev, sizeof(*adev), GFP_KERNEL);
2893 	if (!adev)
2894 		return -ENOMEM;
2895 	*adev = (struct acpi_device) {
2896 		.handle = &nfit_ctl_handle,
2897 		.dev = {
2898 			.init_name = "test-adev",
2899 		},
2900 	};
2901 
2902 	acpi_desc = devm_kzalloc(dev, sizeof(*acpi_desc), GFP_KERNEL);
2903 	if (!acpi_desc)
2904 		return -ENOMEM;
2905 	*acpi_desc = (struct acpi_nfit_desc) {
2906 		.nd_desc = {
2907 			.cmd_mask = 1UL << ND_CMD_ARS_CAP
2908 				| 1UL << ND_CMD_ARS_START
2909 				| 1UL << ND_CMD_ARS_STATUS
2910 				| 1UL << ND_CMD_CLEAR_ERROR
2911 				| 1UL << ND_CMD_CALL,
2912 			.module = THIS_MODULE,
2913 			.provider_name = "ACPI.NFIT",
2914 			.ndctl = acpi_nfit_ctl,
2915 			.bus_family_mask = 1UL << NVDIMM_BUS_FAMILY_NFIT
2916 				| 1UL << NVDIMM_BUS_FAMILY_INTEL,
2917 		},
2918 		.bus_dsm_mask = 1UL << NFIT_CMD_TRANSLATE_SPA
2919 			| 1UL << NFIT_CMD_ARS_INJECT_SET
2920 			| 1UL << NFIT_CMD_ARS_INJECT_CLEAR
2921 			| 1UL << NFIT_CMD_ARS_INJECT_GET,
2922 		.family_dsm_mask[NVDIMM_BUS_FAMILY_INTEL] =
2923 			NVDIMM_BUS_INTEL_FW_ACTIVATE_CMDMASK,
2924 		.dev = &adev->dev,
2925 	};
2926 
2927 	nfit_mem = devm_kzalloc(dev, sizeof(*nfit_mem), GFP_KERNEL);
2928 	if (!nfit_mem)
2929 		return -ENOMEM;
2930 
2931 	mask = 1UL << ND_CMD_SMART | 1UL << ND_CMD_SMART_THRESHOLD
2932 		| 1UL << ND_CMD_DIMM_FLAGS | 1UL << ND_CMD_GET_CONFIG_SIZE
2933 		| 1UL << ND_CMD_GET_CONFIG_DATA | 1UL << ND_CMD_SET_CONFIG_DATA
2934 		| 1UL << ND_CMD_VENDOR;
2935 	*nfit_mem = (struct nfit_mem) {
2936 		.adev = adev,
2937 		.family = NVDIMM_FAMILY_INTEL,
2938 		.dsm_mask = mask,
2939 	};
2940 
2941 	nvdimm = devm_kzalloc(dev, sizeof(*nvdimm), GFP_KERNEL);
2942 	if (!nvdimm)
2943 		return -ENOMEM;
2944 	*nvdimm = (struct nvdimm) {
2945 		.provider_data = nfit_mem,
2946 		.cmd_mask = mask,
2947 		.dev = {
2948 			.init_name = "test-dimm",
2949 		},
2950 	};
2951 
2952 
2953 	/* basic checkout of a typical 'get config size' command */
2954 	cmd_size = sizeof(cmd.cfg_size);
2955 	cmd.cfg_size = (struct nd_cmd_get_config_size) {
2956 		.status = 0,
2957 		.config_size = SZ_128K,
2958 		.max_xfer = SZ_4K,
2959 	};
2960 	rc = setup_result(cmd.buf, cmd_size);
2961 	if (rc)
2962 		return rc;
2963 	rc = acpi_nfit_ctl(&acpi_desc->nd_desc, nvdimm, ND_CMD_GET_CONFIG_SIZE,
2964 			cmd.buf, cmd_size, &cmd_rc);
2965 
2966 	if (rc < 0 || cmd_rc || cmd.cfg_size.status != 0
2967 			|| cmd.cfg_size.config_size != SZ_128K
2968 			|| cmd.cfg_size.max_xfer != SZ_4K) {
2969 		dev_dbg(dev, "%s: failed at: %d rc: %d cmd_rc: %d\n",
2970 				__func__, __LINE__, rc, cmd_rc);
2971 		return -EIO;
2972 	}
2973 
2974 
2975 	/* test ars_status with zero output */
2976 	cmd_size = offsetof(struct nd_cmd_ars_status, address);
2977 	cmd.ars_stat = (struct nd_cmd_ars_status) {
2978 		.out_length = 0,
2979 	};
2980 	rc = setup_result(cmd.buf, cmd_size);
2981 	if (rc)
2982 		return rc;
2983 	rc = acpi_nfit_ctl(&acpi_desc->nd_desc, NULL, ND_CMD_ARS_STATUS,
2984 			cmd.buf, cmd_size, &cmd_rc);
2985 
2986 	if (rc < 0 || cmd_rc) {
2987 		dev_dbg(dev, "%s: failed at: %d rc: %d cmd_rc: %d\n",
2988 				__func__, __LINE__, rc, cmd_rc);
2989 		return -EIO;
2990 	}
2991 
2992 
2993 	/* test ars_cap with benign extended status */
2994 	cmd_size = sizeof(cmd.ars_cap);
2995 	cmd.ars_cap = (struct nd_cmd_ars_cap) {
2996 		.status = ND_ARS_PERSISTENT << 16,
2997 	};
2998 	offset = offsetof(struct nd_cmd_ars_cap, status);
2999 	rc = setup_result(cmd.buf + offset, cmd_size - offset);
3000 	if (rc)
3001 		return rc;
3002 	rc = acpi_nfit_ctl(&acpi_desc->nd_desc, NULL, ND_CMD_ARS_CAP,
3003 			cmd.buf, cmd_size, &cmd_rc);
3004 
3005 	if (rc < 0 || cmd_rc) {
3006 		dev_dbg(dev, "%s: failed at: %d rc: %d cmd_rc: %d\n",
3007 				__func__, __LINE__, rc, cmd_rc);
3008 		return -EIO;
3009 	}
3010 
3011 
3012 	/* test ars_status with 'status' trimmed from 'out_length' */
3013 	cmd_size = sizeof(cmd.ars_stat) + sizeof(struct nd_ars_record);
3014 	cmd.ars_stat = (struct nd_cmd_ars_status) {
3015 		.out_length = cmd_size - 4,
3016 	};
3017 	record = &cmd.ars_stat.records[0];
3018 	*record = (struct nd_ars_record) {
3019 		.length = test_val,
3020 	};
3021 	rc = setup_result(cmd.buf, cmd_size);
3022 	if (rc)
3023 		return rc;
3024 	rc = acpi_nfit_ctl(&acpi_desc->nd_desc, NULL, ND_CMD_ARS_STATUS,
3025 			cmd.buf, cmd_size, &cmd_rc);
3026 
3027 	if (rc < 0 || cmd_rc || record->length != test_val) {
3028 		dev_dbg(dev, "%s: failed at: %d rc: %d cmd_rc: %d\n",
3029 				__func__, __LINE__, rc, cmd_rc);
3030 		return -EIO;
3031 	}
3032 
3033 
3034 	/* test ars_status with 'Output (Size)' including 'status' */
3035 	cmd_size = sizeof(cmd.ars_stat) + sizeof(struct nd_ars_record);
3036 	cmd.ars_stat = (struct nd_cmd_ars_status) {
3037 		.out_length = cmd_size,
3038 	};
3039 	record = &cmd.ars_stat.records[0];
3040 	*record = (struct nd_ars_record) {
3041 		.length = test_val,
3042 	};
3043 	rc = setup_result(cmd.buf, cmd_size);
3044 	if (rc)
3045 		return rc;
3046 	rc = acpi_nfit_ctl(&acpi_desc->nd_desc, NULL, ND_CMD_ARS_STATUS,
3047 			cmd.buf, cmd_size, &cmd_rc);
3048 
3049 	if (rc < 0 || cmd_rc || record->length != test_val) {
3050 		dev_dbg(dev, "%s: failed at: %d rc: %d cmd_rc: %d\n",
3051 				__func__, __LINE__, rc, cmd_rc);
3052 		return -EIO;
3053 	}
3054 
3055 
3056 	/* test extended status for get_config_size results in failure */
3057 	cmd_size = sizeof(cmd.cfg_size);
3058 	cmd.cfg_size = (struct nd_cmd_get_config_size) {
3059 		.status = 1 << 16,
3060 	};
3061 	rc = setup_result(cmd.buf, cmd_size);
3062 	if (rc)
3063 		return rc;
3064 	rc = acpi_nfit_ctl(&acpi_desc->nd_desc, nvdimm, ND_CMD_GET_CONFIG_SIZE,
3065 			cmd.buf, cmd_size, &cmd_rc);
3066 
3067 	if (rc < 0 || cmd_rc >= 0) {
3068 		dev_dbg(dev, "%s: failed at: %d rc: %d cmd_rc: %d\n",
3069 				__func__, __LINE__, rc, cmd_rc);
3070 		return -EIO;
3071 	}
3072 
3073 	/* test clear error */
3074 	cmd_size = sizeof(cmd.clear_err);
3075 	cmd.clear_err = (struct nd_cmd_clear_error) {
3076 		.length = 512,
3077 		.cleared = 512,
3078 	};
3079 	rc = setup_result(cmd.buf, cmd_size);
3080 	if (rc)
3081 		return rc;
3082 	rc = acpi_nfit_ctl(&acpi_desc->nd_desc, NULL, ND_CMD_CLEAR_ERROR,
3083 			cmd.buf, cmd_size, &cmd_rc);
3084 	if (rc < 0 || cmd_rc) {
3085 		dev_dbg(dev, "%s: failed at: %d rc: %d cmd_rc: %d\n",
3086 				__func__, __LINE__, rc, cmd_rc);
3087 		return -EIO;
3088 	}
3089 
3090 	/* test firmware activate bus info */
3091 	cmd_size = sizeof(cmd.fwa_info);
3092 	cmd = (struct nfit_ctl_test_cmd) {
3093 		.pkg = {
3094 			.nd_command = NVDIMM_BUS_INTEL_FW_ACTIVATE_BUSINFO,
3095 			.nd_family = NVDIMM_BUS_FAMILY_INTEL,
3096 			.nd_size_out = cmd_size,
3097 			.nd_fw_size = cmd_size,
3098 		},
3099 		.fwa_info = {
3100 			.state = ND_INTEL_FWA_IDLE,
3101 			.capability = ND_INTEL_BUS_FWA_CAP_FWQUIESCE
3102 				| ND_INTEL_BUS_FWA_CAP_OSQUIESCE,
3103 			.activate_tmo = 1,
3104 			.cpu_quiesce_tmo = 1,
3105 			.io_quiesce_tmo = 1,
3106 			.max_quiesce_tmo = 1,
3107 		},
3108 	};
3109 	rc = setup_result(cmd.buf, cmd_size);
3110 	if (rc)
3111 		return rc;
3112 	rc = acpi_nfit_ctl(&acpi_desc->nd_desc, NULL, ND_CMD_CALL,
3113 			&cmd, sizeof(cmd.pkg) + cmd_size, &cmd_rc);
3114 	if (rc < 0 || cmd_rc) {
3115 		dev_dbg(dev, "%s: failed at: %d rc: %d cmd_rc: %d\n",
3116 				__func__, __LINE__, rc, cmd_rc);
3117 		return -EIO;
3118 	}
3119 
3120 	return 0;
3121 }
3122 
nfit_test_probe(struct platform_device * pdev)3123 static int nfit_test_probe(struct platform_device *pdev)
3124 {
3125 	struct nvdimm_bus_descriptor *nd_desc;
3126 	struct acpi_nfit_desc *acpi_desc;
3127 	struct device *dev = &pdev->dev;
3128 	struct nfit_test *nfit_test;
3129 	struct nfit_mem *nfit_mem;
3130 	union acpi_object *obj;
3131 	int rc;
3132 
3133 	if (strcmp(dev_name(&pdev->dev), "nfit_test.0") == 0) {
3134 		rc = nfit_ctl_test(&pdev->dev);
3135 		if (rc)
3136 			return rc;
3137 	}
3138 
3139 	nfit_test = to_nfit_test(&pdev->dev);
3140 
3141 	/* common alloc */
3142 	if (nfit_test->num_dcr) {
3143 		int num = nfit_test->num_dcr;
3144 
3145 		nfit_test->dimm = devm_kcalloc(dev, num, sizeof(void *),
3146 				GFP_KERNEL);
3147 		nfit_test->dimm_dma = devm_kcalloc(dev, num, sizeof(dma_addr_t),
3148 				GFP_KERNEL);
3149 		nfit_test->flush = devm_kcalloc(dev, num, sizeof(void *),
3150 				GFP_KERNEL);
3151 		nfit_test->flush_dma = devm_kcalloc(dev, num, sizeof(dma_addr_t),
3152 				GFP_KERNEL);
3153 		nfit_test->label = devm_kcalloc(dev, num, sizeof(void *),
3154 				GFP_KERNEL);
3155 		nfit_test->label_dma = devm_kcalloc(dev, num,
3156 				sizeof(dma_addr_t), GFP_KERNEL);
3157 		nfit_test->dcr = devm_kcalloc(dev, num,
3158 				sizeof(struct nfit_test_dcr *), GFP_KERNEL);
3159 		nfit_test->dcr_dma = devm_kcalloc(dev, num,
3160 				sizeof(dma_addr_t), GFP_KERNEL);
3161 		nfit_test->smart = devm_kcalloc(dev, num,
3162 				sizeof(struct nd_intel_smart), GFP_KERNEL);
3163 		nfit_test->smart_threshold = devm_kcalloc(dev, num,
3164 				sizeof(struct nd_intel_smart_threshold),
3165 				GFP_KERNEL);
3166 		nfit_test->fw = devm_kcalloc(dev, num,
3167 				sizeof(struct nfit_test_fw), GFP_KERNEL);
3168 		if (nfit_test->dimm && nfit_test->dimm_dma && nfit_test->label
3169 				&& nfit_test->label_dma && nfit_test->dcr
3170 				&& nfit_test->dcr_dma && nfit_test->flush
3171 				&& nfit_test->flush_dma
3172 				&& nfit_test->fw)
3173 			/* pass */;
3174 		else
3175 			return -ENOMEM;
3176 	}
3177 
3178 	if (nfit_test->num_pm) {
3179 		int num = nfit_test->num_pm;
3180 
3181 		nfit_test->spa_set = devm_kcalloc(dev, num, sizeof(void *),
3182 				GFP_KERNEL);
3183 		nfit_test->spa_set_dma = devm_kcalloc(dev, num,
3184 				sizeof(dma_addr_t), GFP_KERNEL);
3185 		if (nfit_test->spa_set && nfit_test->spa_set_dma)
3186 			/* pass */;
3187 		else
3188 			return -ENOMEM;
3189 	}
3190 
3191 	/* per-nfit specific alloc */
3192 	if (nfit_test->alloc(nfit_test))
3193 		return -ENOMEM;
3194 
3195 	nfit_test->setup(nfit_test);
3196 	acpi_desc = &nfit_test->acpi_desc;
3197 	acpi_nfit_desc_init(acpi_desc, &pdev->dev);
3198 	nd_desc = &acpi_desc->nd_desc;
3199 	nd_desc->provider_name = NULL;
3200 	nd_desc->module = THIS_MODULE;
3201 	nd_desc->ndctl = nfit_test_ctl;
3202 
3203 	rc = acpi_nfit_init(acpi_desc, nfit_test->nfit_buf,
3204 			nfit_test->nfit_filled);
3205 	if (rc)
3206 		return rc;
3207 
3208 	rc = devm_add_action_or_reset(&pdev->dev, acpi_nfit_shutdown, acpi_desc);
3209 	if (rc)
3210 		return rc;
3211 
3212 	if (nfit_test->setup != nfit_test0_setup)
3213 		return 0;
3214 
3215 	nfit_test->setup_hotplug = 1;
3216 	nfit_test->setup(nfit_test);
3217 
3218 	obj = kzalloc(sizeof(*obj), GFP_KERNEL);
3219 	if (!obj)
3220 		return -ENOMEM;
3221 	obj->type = ACPI_TYPE_BUFFER;
3222 	obj->buffer.length = nfit_test->nfit_size;
3223 	obj->buffer.pointer = nfit_test->nfit_buf;
3224 	*(nfit_test->_fit) = obj;
3225 	__acpi_nfit_notify(&pdev->dev, nfit_test, 0x80);
3226 
3227 	/* associate dimm devices with nfit_mem data for notification testing */
3228 	mutex_lock(&acpi_desc->init_mutex);
3229 	list_for_each_entry(nfit_mem, &acpi_desc->dimms, list) {
3230 		u32 nfit_handle = __to_nfit_memdev(nfit_mem)->device_handle;
3231 		int i;
3232 
3233 		for (i = 0; i < ARRAY_SIZE(handle); i++)
3234 			if (nfit_handle == handle[i])
3235 				dev_set_drvdata(nfit_test->dimm_dev[i],
3236 						nfit_mem);
3237 	}
3238 	mutex_unlock(&acpi_desc->init_mutex);
3239 
3240 	return 0;
3241 }
3242 
nfit_test_remove(struct platform_device * pdev)3243 static int nfit_test_remove(struct platform_device *pdev)
3244 {
3245 	return 0;
3246 }
3247 
nfit_test_release(struct device * dev)3248 static void nfit_test_release(struct device *dev)
3249 {
3250 	struct nfit_test *nfit_test = to_nfit_test(dev);
3251 
3252 	kfree(nfit_test);
3253 }
3254 
3255 static const struct platform_device_id nfit_test_id[] = {
3256 	{ KBUILD_MODNAME },
3257 	{ },
3258 };
3259 
3260 static struct platform_driver nfit_test_driver = {
3261 	.probe = nfit_test_probe,
3262 	.remove = nfit_test_remove,
3263 	.driver = {
3264 		.name = KBUILD_MODNAME,
3265 	},
3266 	.id_table = nfit_test_id,
3267 };
3268 
nfit_test_init(void)3269 static __init int nfit_test_init(void)
3270 {
3271 	int rc, i;
3272 
3273 	pmem_test();
3274 	libnvdimm_test();
3275 	acpi_nfit_test();
3276 	device_dax_test();
3277 	dax_pmem_test();
3278 
3279 	nfit_test_setup(nfit_test_lookup, nfit_test_evaluate_dsm);
3280 
3281 	nfit_wq = create_singlethread_workqueue("nfit");
3282 	if (!nfit_wq)
3283 		return -ENOMEM;
3284 
3285 	nfit_test_dimm = class_create(THIS_MODULE, "nfit_test_dimm");
3286 	if (IS_ERR(nfit_test_dimm)) {
3287 		rc = PTR_ERR(nfit_test_dimm);
3288 		goto err_register;
3289 	}
3290 
3291 	nfit_pool = gen_pool_create(ilog2(SZ_4M), NUMA_NO_NODE);
3292 	if (!nfit_pool) {
3293 		rc = -ENOMEM;
3294 		goto err_register;
3295 	}
3296 
3297 	if (gen_pool_add(nfit_pool, SZ_4G, SZ_4G, NUMA_NO_NODE)) {
3298 		rc = -ENOMEM;
3299 		goto err_register;
3300 	}
3301 
3302 	for (i = 0; i < NUM_NFITS; i++) {
3303 		struct nfit_test *nfit_test;
3304 		struct platform_device *pdev;
3305 
3306 		nfit_test = kzalloc(sizeof(*nfit_test), GFP_KERNEL);
3307 		if (!nfit_test) {
3308 			rc = -ENOMEM;
3309 			goto err_register;
3310 		}
3311 		INIT_LIST_HEAD(&nfit_test->resources);
3312 		badrange_init(&nfit_test->badrange);
3313 		switch (i) {
3314 		case 0:
3315 			nfit_test->num_pm = NUM_PM;
3316 			nfit_test->dcr_idx = 0;
3317 			nfit_test->num_dcr = NUM_DCR;
3318 			nfit_test->alloc = nfit_test0_alloc;
3319 			nfit_test->setup = nfit_test0_setup;
3320 			break;
3321 		case 1:
3322 			nfit_test->num_pm = 2;
3323 			nfit_test->dcr_idx = NUM_DCR;
3324 			nfit_test->num_dcr = 2;
3325 			nfit_test->alloc = nfit_test1_alloc;
3326 			nfit_test->setup = nfit_test1_setup;
3327 			break;
3328 		default:
3329 			rc = -EINVAL;
3330 			goto err_register;
3331 		}
3332 		pdev = &nfit_test->pdev;
3333 		pdev->name = KBUILD_MODNAME;
3334 		pdev->id = i;
3335 		pdev->dev.release = nfit_test_release;
3336 		rc = platform_device_register(pdev);
3337 		if (rc) {
3338 			put_device(&pdev->dev);
3339 			goto err_register;
3340 		}
3341 		get_device(&pdev->dev);
3342 
3343 		rc = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
3344 		if (rc)
3345 			goto err_register;
3346 
3347 		instances[i] = nfit_test;
3348 		INIT_WORK(&nfit_test->work, uc_error_notify);
3349 	}
3350 
3351 	rc = platform_driver_register(&nfit_test_driver);
3352 	if (rc)
3353 		goto err_register;
3354 	return 0;
3355 
3356  err_register:
3357 	if (nfit_pool)
3358 		gen_pool_destroy(nfit_pool);
3359 
3360 	destroy_workqueue(nfit_wq);
3361 	for (i = 0; i < NUM_NFITS; i++)
3362 		if (instances[i])
3363 			platform_device_unregister(&instances[i]->pdev);
3364 	nfit_test_teardown();
3365 	for (i = 0; i < NUM_NFITS; i++)
3366 		if (instances[i])
3367 			put_device(&instances[i]->pdev.dev);
3368 
3369 	return rc;
3370 }
3371 
nfit_test_exit(void)3372 static __exit void nfit_test_exit(void)
3373 {
3374 	int i;
3375 
3376 	destroy_workqueue(nfit_wq);
3377 	for (i = 0; i < NUM_NFITS; i++)
3378 		platform_device_unregister(&instances[i]->pdev);
3379 	platform_driver_unregister(&nfit_test_driver);
3380 	nfit_test_teardown();
3381 
3382 	gen_pool_destroy(nfit_pool);
3383 
3384 	for (i = 0; i < NUM_NFITS; i++)
3385 		put_device(&instances[i]->pdev.dev);
3386 	class_destroy(nfit_test_dimm);
3387 }
3388 
3389 module_init(nfit_test_init);
3390 module_exit(nfit_test_exit);
3391 MODULE_LICENSE("GPL v2");
3392 MODULE_AUTHOR("Intel Corporation");
3393