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1// SPDX-License-Identifier: MIT
2/*
3 * Copyright 2023, Intel Corporation.
4 */
5
6#include <linux/err.h>
7#include <drm/i915_hdcp_interface.h>
8
9#include "i915_drv.h"
10#include "intel_hdcp_gsc_message.h"
11
12int
13intel_hdcp_gsc_initiate_session(struct device *dev, struct hdcp_port_data *data,
14 struct hdcp2_ake_init *ake_data)
15{
16 struct wired_cmd_initiate_hdcp2_session_in session_init_in = {};
17 struct wired_cmd_initiate_hdcp2_session_out session_init_out = {};
18 struct drm_i915_private *i915;
19 ssize_t byte;
20
21 if (!dev || !data || !ake_data)
22 return -EINVAL;
23
24 i915 = kdev_to_i915(dev);
25 if (!i915) {
26 dev_err(dev, "DRM not initialized, aborting HDCP.\n");
27 return -ENODEV;
28 }
29
30 session_init_in.header.api_version = HDCP_API_VERSION;
31 session_init_in.header.command_id = WIRED_INITIATE_HDCP2_SESSION;
32 session_init_in.header.status = FW_HDCP_STATUS_SUCCESS;
33 session_init_in.header.buffer_len =
34 WIRED_CMD_BUF_LEN_INITIATE_HDCP2_SESSION_IN;
35
36 session_init_in.port.integrated_port_type = data->port_type;
37 session_init_in.port.physical_port = (u8)data->hdcp_ddi;
38 session_init_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
39 session_init_in.protocol = data->protocol;
40
41 byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&session_init_in,
42 sizeof(session_init_in),
43 (u8 *)&session_init_out,
44 sizeof(session_init_out));
45 if (byte < 0) {
46 drm_dbg_kms(&i915->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte);
47 return byte;
48 }
49
50 if (session_init_out.header.status != FW_HDCP_STATUS_SUCCESS) {
51 drm_dbg_kms(&i915->drm, "FW cmd 0x%08X Failed. Status: 0x%X\n",
52 WIRED_INITIATE_HDCP2_SESSION,
53 session_init_out.header.status);
54 return -EIO;
55 }
56
57 ake_data->msg_id = HDCP_2_2_AKE_INIT;
58 ake_data->tx_caps = session_init_out.tx_caps;
59 memcpy(ake_data->r_tx, session_init_out.r_tx, HDCP_2_2_RTX_LEN);
60
61 return 0;
62}
63
64int
65intel_hdcp_gsc_verify_receiver_cert_prepare_km(struct device *dev,
66 struct hdcp_port_data *data,
67 struct hdcp2_ake_send_cert *rx_cert,
68 bool *km_stored,
69 struct hdcp2_ake_no_stored_km
70 *ek_pub_km,
71 size_t *msg_sz)
72{
73 struct wired_cmd_verify_receiver_cert_in verify_rxcert_in = {};
74 struct wired_cmd_verify_receiver_cert_out verify_rxcert_out = {};
75 struct drm_i915_private *i915;
76 ssize_t byte;
77
78 if (!dev || !data || !rx_cert || !km_stored || !ek_pub_km || !msg_sz)
79 return -EINVAL;
80
81 i915 = kdev_to_i915(dev);
82 if (!i915) {
83 dev_err(dev, "DRM not initialized, aborting HDCP.\n");
84 return -ENODEV;
85 }
86
87 verify_rxcert_in.header.api_version = HDCP_API_VERSION;
88 verify_rxcert_in.header.command_id = WIRED_VERIFY_RECEIVER_CERT;
89 verify_rxcert_in.header.status = FW_HDCP_STATUS_SUCCESS;
90 verify_rxcert_in.header.buffer_len =
91 WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_IN;
92
93 verify_rxcert_in.port.integrated_port_type = data->port_type;
94 verify_rxcert_in.port.physical_port = (u8)data->hdcp_ddi;
95 verify_rxcert_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
96
97 verify_rxcert_in.cert_rx = rx_cert->cert_rx;
98 memcpy(verify_rxcert_in.r_rx, &rx_cert->r_rx, HDCP_2_2_RRX_LEN);
99 memcpy(verify_rxcert_in.rx_caps, rx_cert->rx_caps, HDCP_2_2_RXCAPS_LEN);
100
101 byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&verify_rxcert_in,
102 sizeof(verify_rxcert_in),
103 (u8 *)&verify_rxcert_out,
104 sizeof(verify_rxcert_out));
105 if (byte < 0) {
106 drm_dbg_kms(&i915->drm, "intel_hdcp_gsc_msg_send failed: %zd\n", byte);
107 return byte;
108 }
109
110 if (verify_rxcert_out.header.status != FW_HDCP_STATUS_SUCCESS) {
111 drm_dbg_kms(&i915->drm, "FW cmd 0x%08X Failed. Status: 0x%X\n",
112 WIRED_VERIFY_RECEIVER_CERT,
113 verify_rxcert_out.header.status);
114 return -EIO;
115 }
116
117 *km_stored = !!verify_rxcert_out.km_stored;
118 if (verify_rxcert_out.km_stored) {
119 ek_pub_km->msg_id = HDCP_2_2_AKE_STORED_KM;
120 *msg_sz = sizeof(struct hdcp2_ake_stored_km);
121 } else {
122 ek_pub_km->msg_id = HDCP_2_2_AKE_NO_STORED_KM;
123 *msg_sz = sizeof(struct hdcp2_ake_no_stored_km);
124 }
125
126 memcpy(ek_pub_km->e_kpub_km, &verify_rxcert_out.ekm_buff,
127 sizeof(verify_rxcert_out.ekm_buff));
128
129 return 0;
130}
131
132int
133intel_hdcp_gsc_verify_hprime(struct device *dev, struct hdcp_port_data *data,
134 struct hdcp2_ake_send_hprime *rx_hprime)
135{
136 struct wired_cmd_ake_send_hprime_in send_hprime_in = {};
137 struct wired_cmd_ake_send_hprime_out send_hprime_out = {};
138 struct drm_i915_private *i915;
139 ssize_t byte;
140
141 if (!dev || !data || !rx_hprime)
142 return -EINVAL;
143
144 i915 = kdev_to_i915(dev);
145 if (!i915) {
146 dev_err(dev, "DRM not initialized, aborting HDCP.\n");
147 return -ENODEV;
148 }
149
150 send_hprime_in.header.api_version = HDCP_API_VERSION;
151 send_hprime_in.header.command_id = WIRED_AKE_SEND_HPRIME;
152 send_hprime_in.header.status = FW_HDCP_STATUS_SUCCESS;
153 send_hprime_in.header.buffer_len = WIRED_CMD_BUF_LEN_AKE_SEND_HPRIME_IN;
154
155 send_hprime_in.port.integrated_port_type = data->port_type;
156 send_hprime_in.port.physical_port = (u8)data->hdcp_ddi;
157 send_hprime_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
158
159 memcpy(send_hprime_in.h_prime, rx_hprime->h_prime,
160 HDCP_2_2_H_PRIME_LEN);
161
162 byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&send_hprime_in,
163 sizeof(send_hprime_in),
164 (u8 *)&send_hprime_out,
165 sizeof(send_hprime_out));
166 if (byte < 0) {
167 drm_dbg_kms(&i915->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte);
168 return byte;
169 }
170
171 if (send_hprime_out.header.status != FW_HDCP_STATUS_SUCCESS) {
172 drm_dbg_kms(&i915->drm, "FW cmd 0x%08X Failed. Status: 0x%X\n",
173 WIRED_AKE_SEND_HPRIME, send_hprime_out.header.status);
174 return -EIO;
175 }
176
177 return 0;
178}
179
180int
181intel_hdcp_gsc_store_pairing_info(struct device *dev, struct hdcp_port_data *data,
182 struct hdcp2_ake_send_pairing_info *pairing_info)
183{
184 struct wired_cmd_ake_send_pairing_info_in pairing_info_in = {};
185 struct wired_cmd_ake_send_pairing_info_out pairing_info_out = {};
186 struct drm_i915_private *i915;
187 ssize_t byte;
188
189 if (!dev || !data || !pairing_info)
190 return -EINVAL;
191
192 i915 = kdev_to_i915(dev);
193 if (!i915) {
194 dev_err(dev, "DRM not initialized, aborting HDCP.\n");
195 return -ENODEV;
196 }
197
198 pairing_info_in.header.api_version = HDCP_API_VERSION;
199 pairing_info_in.header.command_id = WIRED_AKE_SEND_PAIRING_INFO;
200 pairing_info_in.header.status = FW_HDCP_STATUS_SUCCESS;
201 pairing_info_in.header.buffer_len =
202 WIRED_CMD_BUF_LEN_SEND_PAIRING_INFO_IN;
203
204 pairing_info_in.port.integrated_port_type = data->port_type;
205 pairing_info_in.port.physical_port = (u8)data->hdcp_ddi;
206 pairing_info_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
207
208 memcpy(pairing_info_in.e_kh_km, pairing_info->e_kh_km,
209 HDCP_2_2_E_KH_KM_LEN);
210
211 byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&pairing_info_in,
212 sizeof(pairing_info_in),
213 (u8 *)&pairing_info_out,
214 sizeof(pairing_info_out));
215 if (byte < 0) {
216 drm_dbg_kms(&i915->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte);
217 return byte;
218 }
219
220 if (pairing_info_out.header.status != FW_HDCP_STATUS_SUCCESS) {
221 drm_dbg_kms(&i915->drm, "FW cmd 0x%08X failed. Status: 0x%X\n",
222 WIRED_AKE_SEND_PAIRING_INFO,
223 pairing_info_out.header.status);
224 return -EIO;
225 }
226
227 return 0;
228}
229
230int
231intel_hdcp_gsc_initiate_locality_check(struct device *dev,
232 struct hdcp_port_data *data,
233 struct hdcp2_lc_init *lc_init_data)
234{
235 struct wired_cmd_init_locality_check_in lc_init_in = {};
236 struct wired_cmd_init_locality_check_out lc_init_out = {};
237 struct drm_i915_private *i915;
238 ssize_t byte;
239
240 if (!dev || !data || !lc_init_data)
241 return -EINVAL;
242
243 i915 = kdev_to_i915(dev);
244 if (!i915) {
245 dev_err(dev, "DRM not initialized, aborting HDCP.\n");
246 return -ENODEV;
247 }
248
249 lc_init_in.header.api_version = HDCP_API_VERSION;
250 lc_init_in.header.command_id = WIRED_INIT_LOCALITY_CHECK;
251 lc_init_in.header.status = FW_HDCP_STATUS_SUCCESS;
252 lc_init_in.header.buffer_len = WIRED_CMD_BUF_LEN_INIT_LOCALITY_CHECK_IN;
253
254 lc_init_in.port.integrated_port_type = data->port_type;
255 lc_init_in.port.physical_port = (u8)data->hdcp_ddi;
256 lc_init_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
257
258 byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&lc_init_in, sizeof(lc_init_in),
259 (u8 *)&lc_init_out, sizeof(lc_init_out));
260 if (byte < 0) {
261 drm_dbg_kms(&i915->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte);
262 return byte;
263 }
264
265 if (lc_init_out.header.status != FW_HDCP_STATUS_SUCCESS) {
266 drm_dbg_kms(&i915->drm, "FW cmd 0x%08X Failed. status: 0x%X\n",
267 WIRED_INIT_LOCALITY_CHECK, lc_init_out.header.status);
268 return -EIO;
269 }
270
271 lc_init_data->msg_id = HDCP_2_2_LC_INIT;
272 memcpy(lc_init_data->r_n, lc_init_out.r_n, HDCP_2_2_RN_LEN);
273
274 return 0;
275}
276
277int
278intel_hdcp_gsc_verify_lprime(struct device *dev, struct hdcp_port_data *data,
279 struct hdcp2_lc_send_lprime *rx_lprime)
280{
281 struct wired_cmd_validate_locality_in verify_lprime_in = {};
282 struct wired_cmd_validate_locality_out verify_lprime_out = {};
283 struct drm_i915_private *i915;
284 ssize_t byte;
285
286 if (!dev || !data || !rx_lprime)
287 return -EINVAL;
288
289 i915 = kdev_to_i915(dev);
290 if (!i915) {
291 dev_err(dev, "DRM not initialized, aborting HDCP.\n");
292 return -ENODEV;
293 }
294
295 verify_lprime_in.header.api_version = HDCP_API_VERSION;
296 verify_lprime_in.header.command_id = WIRED_VALIDATE_LOCALITY;
297 verify_lprime_in.header.status = FW_HDCP_STATUS_SUCCESS;
298 verify_lprime_in.header.buffer_len =
299 WIRED_CMD_BUF_LEN_VALIDATE_LOCALITY_IN;
300
301 verify_lprime_in.port.integrated_port_type = data->port_type;
302 verify_lprime_in.port.physical_port = (u8)data->hdcp_ddi;
303 verify_lprime_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
304
305 memcpy(verify_lprime_in.l_prime, rx_lprime->l_prime,
306 HDCP_2_2_L_PRIME_LEN);
307
308 byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&verify_lprime_in,
309 sizeof(verify_lprime_in),
310 (u8 *)&verify_lprime_out,
311 sizeof(verify_lprime_out));
312 if (byte < 0) {
313 drm_dbg_kms(&i915->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte);
314 return byte;
315 }
316
317 if (verify_lprime_out.header.status != FW_HDCP_STATUS_SUCCESS) {
318 drm_dbg_kms(&i915->drm, "FW cmd 0x%08X failed. status: 0x%X\n",
319 WIRED_VALIDATE_LOCALITY,
320 verify_lprime_out.header.status);
321 return -EIO;
322 }
323
324 return 0;
325}
326
327int intel_hdcp_gsc_get_session_key(struct device *dev,
328 struct hdcp_port_data *data,
329 struct hdcp2_ske_send_eks *ske_data)
330{
331 struct wired_cmd_get_session_key_in get_skey_in = {};
332 struct wired_cmd_get_session_key_out get_skey_out = {};
333 struct drm_i915_private *i915;
334 ssize_t byte;
335
336 if (!dev || !data || !ske_data)
337 return -EINVAL;
338
339 i915 = kdev_to_i915(dev);
340 if (!i915) {
341 dev_err(dev, "DRM not initialized, aborting HDCP.\n");
342 return -ENODEV;
343 }
344
345 get_skey_in.header.api_version = HDCP_API_VERSION;
346 get_skey_in.header.command_id = WIRED_GET_SESSION_KEY;
347 get_skey_in.header.status = FW_HDCP_STATUS_SUCCESS;
348 get_skey_in.header.buffer_len = WIRED_CMD_BUF_LEN_GET_SESSION_KEY_IN;
349
350 get_skey_in.port.integrated_port_type = data->port_type;
351 get_skey_in.port.physical_port = (u8)data->hdcp_ddi;
352 get_skey_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
353
354 byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&get_skey_in, sizeof(get_skey_in),
355 (u8 *)&get_skey_out, sizeof(get_skey_out));
356 if (byte < 0) {
357 drm_dbg_kms(&i915->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte);
358 return byte;
359 }
360
361 if (get_skey_out.header.status != FW_HDCP_STATUS_SUCCESS) {
362 drm_dbg_kms(&i915->drm, "FW cmd 0x%08X failed. status: 0x%X\n",
363 WIRED_GET_SESSION_KEY, get_skey_out.header.status);
364 return -EIO;
365 }
366
367 ske_data->msg_id = HDCP_2_2_SKE_SEND_EKS;
368 memcpy(ske_data->e_dkey_ks, get_skey_out.e_dkey_ks,
369 HDCP_2_2_E_DKEY_KS_LEN);
370 memcpy(ske_data->riv, get_skey_out.r_iv, HDCP_2_2_RIV_LEN);
371
372 return 0;
373}
374
375int
376intel_hdcp_gsc_repeater_check_flow_prepare_ack(struct device *dev,
377 struct hdcp_port_data *data,
378 struct hdcp2_rep_send_receiverid_list
379 *rep_topology,
380 struct hdcp2_rep_send_ack
381 *rep_send_ack)
382{
383 struct wired_cmd_verify_repeater_in verify_repeater_in = {};
384 struct wired_cmd_verify_repeater_out verify_repeater_out = {};
385 struct drm_i915_private *i915;
386 ssize_t byte;
387
388 if (!dev || !rep_topology || !rep_send_ack || !data)
389 return -EINVAL;
390
391 i915 = kdev_to_i915(dev);
392 if (!i915) {
393 dev_err(dev, "DRM not initialized, aborting HDCP.\n");
394 return -ENODEV;
395 }
396
397 verify_repeater_in.header.api_version = HDCP_API_VERSION;
398 verify_repeater_in.header.command_id = WIRED_VERIFY_REPEATER;
399 verify_repeater_in.header.status = FW_HDCP_STATUS_SUCCESS;
400 verify_repeater_in.header.buffer_len =
401 WIRED_CMD_BUF_LEN_VERIFY_REPEATER_IN;
402
403 verify_repeater_in.port.integrated_port_type = data->port_type;
404 verify_repeater_in.port.physical_port = (u8)data->hdcp_ddi;
405 verify_repeater_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
406
407 memcpy(verify_repeater_in.rx_info, rep_topology->rx_info,
408 HDCP_2_2_RXINFO_LEN);
409 memcpy(verify_repeater_in.seq_num_v, rep_topology->seq_num_v,
410 HDCP_2_2_SEQ_NUM_LEN);
411 memcpy(verify_repeater_in.v_prime, rep_topology->v_prime,
412 HDCP_2_2_V_PRIME_HALF_LEN);
413 memcpy(verify_repeater_in.receiver_ids, rep_topology->receiver_ids,
414 HDCP_2_2_RECEIVER_IDS_MAX_LEN);
415
416 byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&verify_repeater_in,
417 sizeof(verify_repeater_in),
418 (u8 *)&verify_repeater_out,
419 sizeof(verify_repeater_out));
420 if (byte < 0) {
421 drm_dbg_kms(&i915->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte);
422 return byte;
423 }
424
425 if (verify_repeater_out.header.status != FW_HDCP_STATUS_SUCCESS) {
426 drm_dbg_kms(&i915->drm, "FW cmd 0x%08X failed. status: 0x%X\n",
427 WIRED_VERIFY_REPEATER,
428 verify_repeater_out.header.status);
429 return -EIO;
430 }
431
432 memcpy(rep_send_ack->v, verify_repeater_out.v,
433 HDCP_2_2_V_PRIME_HALF_LEN);
434 rep_send_ack->msg_id = HDCP_2_2_REP_SEND_ACK;
435
436 return 0;
437}
438
439int intel_hdcp_gsc_verify_mprime(struct device *dev,
440 struct hdcp_port_data *data,
441 struct hdcp2_rep_stream_ready *stream_ready)
442{
443 struct wired_cmd_repeater_auth_stream_req_in *verify_mprime_in;
444 struct wired_cmd_repeater_auth_stream_req_out verify_mprime_out = {};
445 struct drm_i915_private *i915;
446 ssize_t byte;
447 size_t cmd_size;
448
449 if (!dev || !stream_ready || !data)
450 return -EINVAL;
451
452 i915 = kdev_to_i915(dev);
453 if (!i915) {
454 dev_err(dev, "DRM not initialized, aborting HDCP.\n");
455 return -ENODEV;
456 }
457
458 cmd_size = struct_size(verify_mprime_in, streams, data->k);
459 if (cmd_size == SIZE_MAX)
460 return -EINVAL;
461
462 verify_mprime_in = kzalloc(cmd_size, GFP_KERNEL);
463 if (!verify_mprime_in)
464 return -ENOMEM;
465
466 verify_mprime_in->header.api_version = HDCP_API_VERSION;
467 verify_mprime_in->header.command_id = WIRED_REPEATER_AUTH_STREAM_REQ;
468 verify_mprime_in->header.status = FW_HDCP_STATUS_SUCCESS;
469 verify_mprime_in->header.buffer_len = cmd_size - sizeof(verify_mprime_in->header);
470
471 verify_mprime_in->port.integrated_port_type = data->port_type;
472 verify_mprime_in->port.physical_port = (u8)data->hdcp_ddi;
473 verify_mprime_in->port.attached_transcoder = (u8)data->hdcp_transcoder;
474
475 memcpy(verify_mprime_in->m_prime, stream_ready->m_prime, HDCP_2_2_MPRIME_LEN);
476 drm_hdcp_cpu_to_be24(verify_mprime_in->seq_num_m, data->seq_num_m);
477
478 memcpy(verify_mprime_in->streams, data->streams,
479 array_size(data->k, sizeof(*data->streams)));
480
481 verify_mprime_in->k = cpu_to_be16(data->k);
482
483 byte = intel_hdcp_gsc_msg_send(i915, (u8 *)verify_mprime_in, cmd_size,
484 (u8 *)&verify_mprime_out,
485 sizeof(verify_mprime_out));
486 kfree(verify_mprime_in);
487 if (byte < 0) {
488 drm_dbg_kms(&i915->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte);
489 return byte;
490 }
491
492 if (verify_mprime_out.header.status != FW_HDCP_STATUS_SUCCESS) {
493 drm_dbg_kms(&i915->drm, "FW cmd 0x%08X failed. status: 0x%X\n",
494 WIRED_REPEATER_AUTH_STREAM_REQ,
495 verify_mprime_out.header.status);
496 return -EIO;
497 }
498
499 return 0;
500}
501
502int intel_hdcp_gsc_enable_authentication(struct device *dev,
503 struct hdcp_port_data *data)
504{
505 struct wired_cmd_enable_auth_in enable_auth_in = {};
506 struct wired_cmd_enable_auth_out enable_auth_out = {};
507 struct drm_i915_private *i915;
508 ssize_t byte;
509
510 if (!dev || !data)
511 return -EINVAL;
512
513 i915 = kdev_to_i915(dev);
514 if (!i915) {
515 dev_err(dev, "DRM not initialized, aborting HDCP.\n");
516 return -ENODEV;
517 }
518
519 enable_auth_in.header.api_version = HDCP_API_VERSION;
520 enable_auth_in.header.command_id = WIRED_ENABLE_AUTH;
521 enable_auth_in.header.status = FW_HDCP_STATUS_SUCCESS;
522 enable_auth_in.header.buffer_len = WIRED_CMD_BUF_LEN_ENABLE_AUTH_IN;
523
524 enable_auth_in.port.integrated_port_type = data->port_type;
525 enable_auth_in.port.physical_port = (u8)data->hdcp_ddi;
526 enable_auth_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
527 enable_auth_in.stream_type = data->streams[0].stream_type;
528
529 byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&enable_auth_in,
530 sizeof(enable_auth_in),
531 (u8 *)&enable_auth_out,
532 sizeof(enable_auth_out));
533 if (byte < 0) {
534 drm_dbg_kms(&i915->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte);
535 return byte;
536 }
537
538 if (enable_auth_out.header.status != FW_HDCP_STATUS_SUCCESS) {
539 drm_dbg_kms(&i915->drm, "FW cmd 0x%08X failed. status: 0x%X\n",
540 WIRED_ENABLE_AUTH, enable_auth_out.header.status);
541 return -EIO;
542 }
543
544 return 0;
545}
546
547int
548intel_hdcp_gsc_close_session(struct device *dev, struct hdcp_port_data *data)
549{
550 struct wired_cmd_close_session_in session_close_in = {};
551 struct wired_cmd_close_session_out session_close_out = {};
552 struct drm_i915_private *i915;
553 ssize_t byte;
554
555 if (!dev || !data)
556 return -EINVAL;
557
558 i915 = kdev_to_i915(dev);
559 if (!i915) {
560 dev_err(dev, "DRM not initialized, aborting HDCP.\n");
561 return -ENODEV;
562 }
563
564 session_close_in.header.api_version = HDCP_API_VERSION;
565 session_close_in.header.command_id = WIRED_CLOSE_SESSION;
566 session_close_in.header.status = FW_HDCP_STATUS_SUCCESS;
567 session_close_in.header.buffer_len =
568 WIRED_CMD_BUF_LEN_CLOSE_SESSION_IN;
569
570 session_close_in.port.integrated_port_type = data->port_type;
571 session_close_in.port.physical_port = (u8)data->hdcp_ddi;
572 session_close_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
573
574 byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&session_close_in,
575 sizeof(session_close_in),
576 (u8 *)&session_close_out,
577 sizeof(session_close_out));
578 if (byte < 0) {
579 drm_dbg_kms(&i915->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte);
580 return byte;
581 }
582
583 if (session_close_out.header.status != FW_HDCP_STATUS_SUCCESS) {
584 drm_dbg_kms(&i915->drm, "Session Close Failed. status: 0x%X\n",
585 session_close_out.header.status);
586 return -EIO;
587 }
588
589 return 0;
590}