1 // SPDX-License-Identifier: MIT
2 /*
3 * Copyright © 2023-2024 Intel Corporation
4 */
5
6 #include <drm/drm_managed.h>
7
8 #include "abi/guc_actions_sriov_abi.h"
9 #include "abi/guc_relay_actions_abi.h"
10
11 #include "regs/xe_gt_regs.h"
12 #include "regs/xe_guc_regs.h"
13 #include "regs/xe_regs.h"
14
15 #include "xe_mmio.h"
16 #include "xe_gt_sriov_printk.h"
17 #include "xe_gt_sriov_pf_helpers.h"
18 #include "xe_gt_sriov_pf_service.h"
19 #include "xe_gt_sriov_pf_service_types.h"
20 #include "xe_guc_ct.h"
21 #include "xe_guc_hxg_helpers.h"
22
pf_init_versions(struct xe_gt * gt)23 static void pf_init_versions(struct xe_gt *gt)
24 {
25 BUILD_BUG_ON(!GUC_RELAY_VERSION_BASE_MAJOR && !GUC_RELAY_VERSION_BASE_MINOR);
26 BUILD_BUG_ON(GUC_RELAY_VERSION_BASE_MAJOR > GUC_RELAY_VERSION_LATEST_MAJOR);
27
28 /* base versions may differ between platforms */
29 gt->sriov.pf.service.version.base.major = GUC_RELAY_VERSION_BASE_MAJOR;
30 gt->sriov.pf.service.version.base.minor = GUC_RELAY_VERSION_BASE_MINOR;
31
32 /* latest version is same for all platforms */
33 gt->sriov.pf.service.version.latest.major = GUC_RELAY_VERSION_LATEST_MAJOR;
34 gt->sriov.pf.service.version.latest.minor = GUC_RELAY_VERSION_LATEST_MINOR;
35 }
36
37 /* Return: 0 on success or a negative error code on failure. */
pf_negotiate_version(struct xe_gt * gt,u32 wanted_major,u32 wanted_minor,u32 * major,u32 * minor)38 static int pf_negotiate_version(struct xe_gt *gt,
39 u32 wanted_major, u32 wanted_minor,
40 u32 *major, u32 *minor)
41 {
42 struct xe_gt_sriov_pf_service_version base = gt->sriov.pf.service.version.base;
43 struct xe_gt_sriov_pf_service_version latest = gt->sriov.pf.service.version.latest;
44
45 xe_gt_assert(gt, base.major);
46 xe_gt_assert(gt, base.major <= latest.major);
47 xe_gt_assert(gt, (base.major < latest.major) || (base.minor <= latest.minor));
48
49 /* VF doesn't care - return our latest */
50 if (wanted_major == VF2PF_HANDSHAKE_MAJOR_ANY &&
51 wanted_minor == VF2PF_HANDSHAKE_MINOR_ANY) {
52 *major = latest.major;
53 *minor = latest.minor;
54 return 0;
55 }
56
57 /* VF wants newer than our - return our latest */
58 if (wanted_major > latest.major) {
59 *major = latest.major;
60 *minor = latest.minor;
61 return 0;
62 }
63
64 /* VF wants older than min required - reject */
65 if (wanted_major < base.major ||
66 (wanted_major == base.major && wanted_minor < base.minor)) {
67 return -EPERM;
68 }
69
70 /* previous major - return wanted, as we should still support it */
71 if (wanted_major < latest.major) {
72 /* XXX: we are not prepared for multi-versions yet */
73 xe_gt_assert(gt, base.major == latest.major);
74 return -ENOPKG;
75 }
76
77 /* same major - return common minor */
78 *major = wanted_major;
79 *minor = min_t(u32, latest.minor, wanted_minor);
80 return 0;
81 }
82
pf_connect(struct xe_gt * gt,u32 vfid,u32 major,u32 minor)83 static void pf_connect(struct xe_gt *gt, u32 vfid, u32 major, u32 minor)
84 {
85 xe_gt_sriov_pf_assert_vfid(gt, vfid);
86 xe_gt_assert(gt, major || minor);
87
88 gt->sriov.pf.vfs[vfid].version.major = major;
89 gt->sriov.pf.vfs[vfid].version.minor = minor;
90 }
91
pf_disconnect(struct xe_gt * gt,u32 vfid)92 static void pf_disconnect(struct xe_gt *gt, u32 vfid)
93 {
94 xe_gt_sriov_pf_assert_vfid(gt, vfid);
95
96 gt->sriov.pf.vfs[vfid].version.major = 0;
97 gt->sriov.pf.vfs[vfid].version.minor = 0;
98 }
99
pf_is_negotiated(struct xe_gt * gt,u32 vfid,u32 major,u32 minor)100 static bool pf_is_negotiated(struct xe_gt *gt, u32 vfid, u32 major, u32 minor)
101 {
102 xe_gt_sriov_pf_assert_vfid(gt, vfid);
103
104 return major == gt->sriov.pf.vfs[vfid].version.major &&
105 minor <= gt->sriov.pf.vfs[vfid].version.minor;
106 }
107
108 static const struct xe_reg tgl_runtime_regs[] = {
109 RPM_CONFIG0, /* _MMIO(0x0d00) */
110 MIRROR_FUSE3, /* _MMIO(0x9118) */
111 XELP_EU_ENABLE, /* _MMIO(0x9134) */
112 XELP_GT_SLICE_ENABLE, /* _MMIO(0x9138) */
113 XELP_GT_GEOMETRY_DSS_ENABLE, /* _MMIO(0x913c) */
114 GT_VEBOX_VDBOX_DISABLE, /* _MMIO(0x9140) */
115 CTC_MODE, /* _MMIO(0xa26c) */
116 HUC_KERNEL_LOAD_INFO, /* _MMIO(0xc1dc) */
117 TIMESTAMP_OVERRIDE, /* _MMIO(0x44074) */
118 };
119
120 static const struct xe_reg ats_m_runtime_regs[] = {
121 RPM_CONFIG0, /* _MMIO(0x0d00) */
122 MIRROR_FUSE3, /* _MMIO(0x9118) */
123 MIRROR_FUSE1, /* _MMIO(0x911c) */
124 XELP_EU_ENABLE, /* _MMIO(0x9134) */
125 XELP_GT_GEOMETRY_DSS_ENABLE, /* _MMIO(0x913c) */
126 GT_VEBOX_VDBOX_DISABLE, /* _MMIO(0x9140) */
127 XEHP_GT_COMPUTE_DSS_ENABLE, /* _MMIO(0x9144) */
128 CTC_MODE, /* _MMIO(0xa26c) */
129 HUC_KERNEL_LOAD_INFO, /* _MMIO(0xc1dc) */
130 TIMESTAMP_OVERRIDE, /* _MMIO(0x44074) */
131 };
132
133 static const struct xe_reg pvc_runtime_regs[] = {
134 RPM_CONFIG0, /* _MMIO(0x0d00) */
135 MIRROR_FUSE3, /* _MMIO(0x9118) */
136 XELP_EU_ENABLE, /* _MMIO(0x9134) */
137 XELP_GT_GEOMETRY_DSS_ENABLE, /* _MMIO(0x913c) */
138 GT_VEBOX_VDBOX_DISABLE, /* _MMIO(0x9140) */
139 XEHP_GT_COMPUTE_DSS_ENABLE, /* _MMIO(0x9144) */
140 XEHPC_GT_COMPUTE_DSS_ENABLE_EXT,/* _MMIO(0x9148) */
141 CTC_MODE, /* _MMIO(0xA26C) */
142 HUC_KERNEL_LOAD_INFO, /* _MMIO(0xc1dc) */
143 TIMESTAMP_OVERRIDE, /* _MMIO(0x44074) */
144 };
145
146 static const struct xe_reg ver_1270_runtime_regs[] = {
147 RPM_CONFIG0, /* _MMIO(0x0d00) */
148 XEHP_FUSE4, /* _MMIO(0x9114) */
149 MIRROR_FUSE3, /* _MMIO(0x9118) */
150 MIRROR_FUSE1, /* _MMIO(0x911c) */
151 XELP_EU_ENABLE, /* _MMIO(0x9134) */
152 XELP_GT_GEOMETRY_DSS_ENABLE, /* _MMIO(0x913c) */
153 GT_VEBOX_VDBOX_DISABLE, /* _MMIO(0x9140) */
154 XEHP_GT_COMPUTE_DSS_ENABLE, /* _MMIO(0x9144) */
155 XEHPC_GT_COMPUTE_DSS_ENABLE_EXT,/* _MMIO(0x9148) */
156 CTC_MODE, /* _MMIO(0xa26c) */
157 HUC_KERNEL_LOAD_INFO, /* _MMIO(0xc1dc) */
158 TIMESTAMP_OVERRIDE, /* _MMIO(0x44074) */
159 };
160
161 static const struct xe_reg ver_2000_runtime_regs[] = {
162 RPM_CONFIG0, /* _MMIO(0x0d00) */
163 XEHP_FUSE4, /* _MMIO(0x9114) */
164 MIRROR_FUSE3, /* _MMIO(0x9118) */
165 MIRROR_FUSE1, /* _MMIO(0x911c) */
166 XELP_EU_ENABLE, /* _MMIO(0x9134) */
167 XELP_GT_GEOMETRY_DSS_ENABLE, /* _MMIO(0x913c) */
168 GT_VEBOX_VDBOX_DISABLE, /* _MMIO(0x9140) */
169 XEHP_GT_COMPUTE_DSS_ENABLE, /* _MMIO(0x9144) */
170 XEHPC_GT_COMPUTE_DSS_ENABLE_EXT,/* _MMIO(0x9148) */
171 XE2_GT_COMPUTE_DSS_2, /* _MMIO(0x914c) */
172 XE2_GT_GEOMETRY_DSS_1, /* _MMIO(0x9150) */
173 XE2_GT_GEOMETRY_DSS_2, /* _MMIO(0x9154) */
174 CTC_MODE, /* _MMIO(0xa26c) */
175 HUC_KERNEL_LOAD_INFO, /* _MMIO(0xc1dc) */
176 TIMESTAMP_OVERRIDE, /* _MMIO(0x44074) */
177 };
178
pick_runtime_regs(struct xe_device * xe,unsigned int * count)179 static const struct xe_reg *pick_runtime_regs(struct xe_device *xe, unsigned int *count)
180 {
181 const struct xe_reg *regs;
182
183 if (GRAPHICS_VERx100(xe) >= 2000) {
184 *count = ARRAY_SIZE(ver_2000_runtime_regs);
185 regs = ver_2000_runtime_regs;
186 } else if (GRAPHICS_VERx100(xe) >= 1270) {
187 *count = ARRAY_SIZE(ver_1270_runtime_regs);
188 regs = ver_1270_runtime_regs;
189 } else if (GRAPHICS_VERx100(xe) == 1260) {
190 *count = ARRAY_SIZE(pvc_runtime_regs);
191 regs = pvc_runtime_regs;
192 } else if (GRAPHICS_VERx100(xe) == 1255) {
193 *count = ARRAY_SIZE(ats_m_runtime_regs);
194 regs = ats_m_runtime_regs;
195 } else if (GRAPHICS_VERx100(xe) == 1200) {
196 *count = ARRAY_SIZE(tgl_runtime_regs);
197 regs = tgl_runtime_regs;
198 } else {
199 regs = ERR_PTR(-ENOPKG);
200 *count = 0;
201 }
202
203 return regs;
204 }
205
pf_alloc_runtime_info(struct xe_gt * gt)206 static int pf_alloc_runtime_info(struct xe_gt *gt)
207 {
208 struct xe_device *xe = gt_to_xe(gt);
209 const struct xe_reg *regs;
210 unsigned int size;
211 u32 *values;
212
213 xe_gt_assert(gt, IS_SRIOV_PF(xe));
214 xe_gt_assert(gt, !gt->sriov.pf.service.runtime.size);
215 xe_gt_assert(gt, !gt->sriov.pf.service.runtime.regs);
216 xe_gt_assert(gt, !gt->sriov.pf.service.runtime.values);
217
218 regs = pick_runtime_regs(xe, &size);
219 if (IS_ERR(regs))
220 return PTR_ERR(regs);
221
222 if (unlikely(!size))
223 return 0;
224
225 values = drmm_kcalloc(&xe->drm, size, sizeof(u32), GFP_KERNEL);
226 if (!values)
227 return -ENOMEM;
228
229 gt->sriov.pf.service.runtime.size = size;
230 gt->sriov.pf.service.runtime.regs = regs;
231 gt->sriov.pf.service.runtime.values = values;
232
233 return 0;
234 }
235
read_many(struct xe_gt * gt,unsigned int count,const struct xe_reg * regs,u32 * values)236 static void read_many(struct xe_gt *gt, unsigned int count,
237 const struct xe_reg *regs, u32 *values)
238 {
239 while (count--)
240 *values++ = xe_mmio_read32(gt, *regs++);
241 }
242
pf_prepare_runtime_info(struct xe_gt * gt)243 static void pf_prepare_runtime_info(struct xe_gt *gt)
244 {
245 const struct xe_reg *regs;
246 unsigned int size;
247 u32 *values;
248
249 if (!gt->sriov.pf.service.runtime.size)
250 return;
251
252 size = gt->sriov.pf.service.runtime.size;
253 regs = gt->sriov.pf.service.runtime.regs;
254 values = gt->sriov.pf.service.runtime.values;
255
256 read_many(gt, size, regs, values);
257
258 if (IS_ENABLED(CONFIG_DRM_XE_DEBUG_SRIOV)) {
259 struct drm_printer p = xe_gt_info_printer(gt);
260
261 xe_gt_sriov_pf_service_print_runtime(gt, &p);
262 }
263 }
264
265 /**
266 * xe_gt_sriov_pf_service_init - Early initialization of the GT SR-IOV PF services.
267 * @gt: the &xe_gt to initialize
268 *
269 * Performs early initialization of the GT SR-IOV PF services, including preparation
270 * of the runtime info that will be shared with VFs.
271 *
272 * This function can only be called on PF.
273 */
xe_gt_sriov_pf_service_init(struct xe_gt * gt)274 int xe_gt_sriov_pf_service_init(struct xe_gt *gt)
275 {
276 int err;
277
278 pf_init_versions(gt);
279
280 err = pf_alloc_runtime_info(gt);
281 if (unlikely(err))
282 goto failed;
283
284 return 0;
285 failed:
286 xe_gt_sriov_err(gt, "Failed to initialize service (%pe)\n", ERR_PTR(err));
287 return err;
288 }
289
290 /**
291 * xe_gt_sriov_pf_service_update - Update PF SR-IOV services.
292 * @gt: the &xe_gt to update
293 *
294 * Updates runtime data shared with VFs.
295 *
296 * This function can be called more than once.
297 * This function can only be called on PF.
298 */
xe_gt_sriov_pf_service_update(struct xe_gt * gt)299 void xe_gt_sriov_pf_service_update(struct xe_gt *gt)
300 {
301 pf_prepare_runtime_info(gt);
302 }
303
304 /**
305 * xe_gt_sriov_pf_service_reset - Reset a connection with the VF.
306 * @gt: the &xe_gt
307 * @vfid: the VF identifier
308 *
309 * Reset a VF driver negotiated VF/PF ABI version.
310 * After that point, the VF driver will have to perform new version handshake
311 * to continue use of the PF services again.
312 *
313 * This function can only be called on PF.
314 */
xe_gt_sriov_pf_service_reset(struct xe_gt * gt,unsigned int vfid)315 void xe_gt_sriov_pf_service_reset(struct xe_gt *gt, unsigned int vfid)
316 {
317 pf_disconnect(gt, vfid);
318 }
319
320 /* Return: 0 on success or a negative error code on failure. */
pf_process_handshake(struct xe_gt * gt,u32 vfid,u32 wanted_major,u32 wanted_minor,u32 * major,u32 * minor)321 static int pf_process_handshake(struct xe_gt *gt, u32 vfid,
322 u32 wanted_major, u32 wanted_minor,
323 u32 *major, u32 *minor)
324 {
325 int err;
326
327 xe_gt_sriov_dbg_verbose(gt, "VF%u wants ABI version %u.%u\n",
328 vfid, wanted_major, wanted_minor);
329
330 err = pf_negotiate_version(gt, wanted_major, wanted_minor, major, minor);
331
332 if (err < 0) {
333 xe_gt_sriov_notice(gt, "VF%u failed to negotiate ABI %u.%u (%pe)\n",
334 vfid, wanted_major, wanted_minor, ERR_PTR(err));
335 pf_disconnect(gt, vfid);
336 } else {
337 xe_gt_sriov_dbg(gt, "VF%u negotiated ABI version %u.%u\n",
338 vfid, *major, *minor);
339 pf_connect(gt, vfid, *major, *minor);
340 }
341
342 return 0;
343 }
344
345 /* Return: length of the response message or a negative error code on failure. */
pf_process_handshake_msg(struct xe_gt * gt,u32 origin,const u32 * request,u32 len,u32 * response,u32 size)346 static int pf_process_handshake_msg(struct xe_gt *gt, u32 origin,
347 const u32 *request, u32 len, u32 *response, u32 size)
348 {
349 u32 wanted_major, wanted_minor;
350 u32 major, minor;
351 u32 mbz;
352 int err;
353
354 if (unlikely(len != VF2PF_HANDSHAKE_REQUEST_MSG_LEN))
355 return -EMSGSIZE;
356
357 mbz = FIELD_GET(VF2PF_HANDSHAKE_REQUEST_MSG_0_MBZ, request[0]);
358 if (unlikely(mbz))
359 return -EPFNOSUPPORT;
360
361 wanted_major = FIELD_GET(VF2PF_HANDSHAKE_REQUEST_MSG_1_MAJOR, request[1]);
362 wanted_minor = FIELD_GET(VF2PF_HANDSHAKE_REQUEST_MSG_1_MINOR, request[1]);
363
364 err = pf_process_handshake(gt, origin, wanted_major, wanted_minor, &major, &minor);
365 if (err < 0)
366 return err;
367
368 xe_gt_assert(gt, major || minor);
369 xe_gt_assert(gt, size >= VF2PF_HANDSHAKE_RESPONSE_MSG_LEN);
370
371 response[0] = FIELD_PREP(GUC_HXG_MSG_0_ORIGIN, GUC_HXG_ORIGIN_HOST) |
372 FIELD_PREP(GUC_HXG_MSG_0_TYPE, GUC_HXG_TYPE_RESPONSE_SUCCESS) |
373 FIELD_PREP(GUC_HXG_RESPONSE_MSG_0_DATA0, 0);
374 response[1] = FIELD_PREP(VF2PF_HANDSHAKE_RESPONSE_MSG_1_MAJOR, major) |
375 FIELD_PREP(VF2PF_HANDSHAKE_RESPONSE_MSG_1_MINOR, minor);
376
377 return VF2PF_HANDSHAKE_RESPONSE_MSG_LEN;
378 }
379
380 struct reg_data {
381 u32 offset;
382 u32 value;
383 } __packed;
384 static_assert(hxg_sizeof(struct reg_data) == 2);
385
386 /* Return: number of entries copied or negative error code on failure. */
pf_service_runtime_query(struct xe_gt * gt,u32 start,u32 limit,struct reg_data * data,u32 * remaining)387 static int pf_service_runtime_query(struct xe_gt *gt, u32 start, u32 limit,
388 struct reg_data *data, u32 *remaining)
389 {
390 struct xe_gt_sriov_pf_service_runtime_regs *runtime;
391 unsigned int count, i;
392 u32 addr;
393
394 xe_gt_assert(gt, IS_SRIOV_PF(gt_to_xe(gt)));
395
396 runtime = >->sriov.pf.service.runtime;
397
398 if (start > runtime->size)
399 return -ERANGE;
400
401 count = min_t(u32, runtime->size - start, limit);
402
403 for (i = 0; i < count; ++i, ++data) {
404 addr = runtime->regs[start + i].addr;
405 data->offset = xe_mmio_adjusted_addr(gt, addr);
406 data->value = runtime->values[start + i];
407 }
408
409 *remaining = runtime->size - start - count;
410 return count;
411 }
412
413 /* Return: length of the response message or a negative error code on failure. */
pf_process_runtime_query_msg(struct xe_gt * gt,u32 origin,const u32 * msg,u32 msg_len,u32 * response,u32 resp_size)414 static int pf_process_runtime_query_msg(struct xe_gt *gt, u32 origin,
415 const u32 *msg, u32 msg_len, u32 *response, u32 resp_size)
416 {
417 const u32 chunk_size = hxg_sizeof(struct reg_data);
418 struct reg_data *reg_data_buf;
419 u32 limit, start, max_chunks;
420 u32 remaining = 0;
421 int ret;
422
423 if (!pf_is_negotiated(gt, origin, 1, 0))
424 return -EACCES;
425 if (unlikely(msg_len > VF2PF_QUERY_RUNTIME_REQUEST_MSG_LEN))
426 return -EMSGSIZE;
427 if (unlikely(msg_len < VF2PF_QUERY_RUNTIME_REQUEST_MSG_LEN))
428 return -EPROTO;
429 if (unlikely(resp_size < VF2PF_QUERY_RUNTIME_RESPONSE_MSG_MIN_LEN))
430 return -EINVAL;
431
432 limit = FIELD_GET(VF2PF_QUERY_RUNTIME_REQUEST_MSG_0_LIMIT, msg[0]);
433 start = FIELD_GET(VF2PF_QUERY_RUNTIME_REQUEST_MSG_1_START, msg[1]);
434
435 resp_size = min_t(u32, resp_size, VF2PF_QUERY_RUNTIME_RESPONSE_MSG_MAX_LEN);
436 max_chunks = (resp_size - VF2PF_QUERY_RUNTIME_RESPONSE_MSG_MIN_LEN) / chunk_size;
437 limit = limit == VF2PF_QUERY_RUNTIME_NO_LIMIT ? max_chunks : min_t(u32, max_chunks, limit);
438 reg_data_buf = (void *)(response + VF2PF_QUERY_RUNTIME_RESPONSE_MSG_MIN_LEN);
439
440 ret = pf_service_runtime_query(gt, start, limit, reg_data_buf, &remaining);
441 if (ret < 0)
442 return ret;
443
444 response[0] = FIELD_PREP(GUC_HXG_MSG_0_ORIGIN, GUC_HXG_ORIGIN_HOST) |
445 FIELD_PREP(GUC_HXG_MSG_0_TYPE, GUC_HXG_TYPE_RESPONSE_SUCCESS) |
446 FIELD_PREP(VF2PF_QUERY_RUNTIME_RESPONSE_MSG_0_COUNT, ret);
447 response[1] = FIELD_PREP(VF2PF_QUERY_RUNTIME_RESPONSE_MSG_1_REMAINING, remaining);
448
449 return VF2PF_QUERY_RUNTIME_RESPONSE_MSG_MIN_LEN + ret * hxg_sizeof(struct reg_data);
450 }
451
452 /**
453 * xe_gt_sriov_pf_service_process_request - Service GT level SR-IOV request message from the VF.
454 * @gt: the &xe_gt that provides the service
455 * @origin: VF number that is requesting the service
456 * @msg: request message
457 * @msg_len: length of the request message (in dwords)
458 * @response: placeholder for the response message
459 * @resp_size: length of the response message buffer (in dwords)
460 *
461 * This function processes `Relay Message`_ request from the VF.
462 *
463 * Return: length of the response message or a negative error code on failure.
464 */
xe_gt_sriov_pf_service_process_request(struct xe_gt * gt,u32 origin,const u32 * msg,u32 msg_len,u32 * response,u32 resp_size)465 int xe_gt_sriov_pf_service_process_request(struct xe_gt *gt, u32 origin,
466 const u32 *msg, u32 msg_len,
467 u32 *response, u32 resp_size)
468 {
469 u32 action, data __maybe_unused;
470 int ret;
471
472 xe_gt_assert(gt, msg_len >= GUC_HXG_MSG_MIN_LEN);
473 xe_gt_assert(gt, FIELD_GET(GUC_HXG_MSG_0_TYPE, msg[0]) == GUC_HXG_TYPE_REQUEST);
474
475 action = FIELD_GET(GUC_HXG_REQUEST_MSG_0_ACTION, msg[0]);
476 data = FIELD_GET(GUC_HXG_REQUEST_MSG_0_DATA0, msg[0]);
477 xe_gt_sriov_dbg_verbose(gt, "service action %#x:%u from VF%u\n",
478 action, data, origin);
479
480 switch (action) {
481 case GUC_RELAY_ACTION_VF2PF_HANDSHAKE:
482 ret = pf_process_handshake_msg(gt, origin, msg, msg_len, response, resp_size);
483 break;
484 case GUC_RELAY_ACTION_VF2PF_QUERY_RUNTIME:
485 ret = pf_process_runtime_query_msg(gt, origin, msg, msg_len, response, resp_size);
486 break;
487 default:
488 ret = -EOPNOTSUPP;
489 break;
490 }
491
492 return ret;
493 }
494
495 /**
496 * xe_gt_sriov_pf_service_print_runtime - Print PF runtime data shared with VFs.
497 * @gt: the &xe_gt
498 * @p: the &drm_printer
499 *
500 * This function is for PF use only.
501 */
xe_gt_sriov_pf_service_print_runtime(struct xe_gt * gt,struct drm_printer * p)502 int xe_gt_sriov_pf_service_print_runtime(struct xe_gt *gt, struct drm_printer *p)
503 {
504 const struct xe_reg *regs;
505 unsigned int size;
506 u32 *values;
507
508 xe_gt_assert(gt, IS_SRIOV_PF(gt_to_xe(gt)));
509
510 size = gt->sriov.pf.service.runtime.size;
511 regs = gt->sriov.pf.service.runtime.regs;
512 values = gt->sriov.pf.service.runtime.values;
513
514 for (; size--; regs++, values++) {
515 drm_printf(p, "reg[%#x] = %#x\n",
516 xe_mmio_adjusted_addr(gt, regs->addr), *values);
517 }
518
519 return 0;
520 }
521
522 /**
523 * xe_gt_sriov_pf_service_print_version - Print ABI versions negotiated with VFs.
524 * @gt: the &xe_gt
525 * @p: the &drm_printer
526 *
527 * This function is for PF use only.
528 */
xe_gt_sriov_pf_service_print_version(struct xe_gt * gt,struct drm_printer * p)529 int xe_gt_sriov_pf_service_print_version(struct xe_gt *gt, struct drm_printer *p)
530 {
531 struct xe_device *xe = gt_to_xe(gt);
532 unsigned int n, total_vfs = xe_sriov_pf_get_totalvfs(xe);
533 struct xe_gt_sriov_pf_service_version *version;
534
535 xe_gt_assert(gt, IS_SRIOV_PF(xe));
536
537 for (n = 1; n <= total_vfs; n++) {
538 version = >->sriov.pf.vfs[n].version;
539 if (!version->major && !version->minor)
540 continue;
541
542 drm_printf(p, "VF%u:\t%u.%u\n", n, version->major, version->minor);
543 }
544
545 return 0;
546 }
547
548 #if IS_BUILTIN(CONFIG_DRM_XE_KUNIT_TEST)
549 #include "tests/xe_gt_sriov_pf_service_test.c"
550 #endif
551