intel_hdcp_gsc_message.c

  1// SPDX-License-Identifier: MIT
  2/*
  3 * Copyright 2023, Intel Corporation.
  4 */
  5
  6#include <linux/err.h>
  7
  8#include <drm/drm_print.h>
  9#include <drm/intel/i915_hdcp_interface.h>
 10
 11#include "intel_display_core.h"
 12#include "intel_display_types.h"
 13#include "intel_hdcp_gsc.h"
 14#include "intel_hdcp_gsc_message.h"
 15
 16static int
 17intel_hdcp_gsc_initiate_session(struct device *dev, struct hdcp_port_data *data,
 18				struct hdcp2_ake_init *ake_data)
 19{
 20	struct wired_cmd_initiate_hdcp2_session_in session_init_in = {};
 21	struct wired_cmd_initiate_hdcp2_session_out session_init_out = {};
 22	struct intel_hdcp_gsc_context *gsc_context;
 23	struct intel_display *display;
 24	ssize_t byte;
 25
 26	if (!dev || !data || !ake_data)
 27		return -EINVAL;
 28
 29	display = to_intel_display(dev);
 30	if (!display) {
 31		dev_err(dev, "DRM not initialized, aborting HDCP.\n");
 32		return -ENODEV;
 33	}
 34	gsc_context = display->hdcp.gsc_context;
 35
 36	session_init_in.header.api_version = HDCP_API_VERSION;
 37	session_init_in.header.command_id = WIRED_INITIATE_HDCP2_SESSION;
 38	session_init_in.header.status = FW_HDCP_STATUS_SUCCESS;
 39	session_init_in.header.buffer_len =
 40				WIRED_CMD_BUF_LEN_INITIATE_HDCP2_SESSION_IN;
 41
 42	session_init_in.port.integrated_port_type = data->port_type;
 43	session_init_in.port.physical_port = (u8)data->hdcp_ddi;
 44	session_init_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
 45	session_init_in.protocol = data->protocol;
 46
 47	byte = intel_hdcp_gsc_msg_send(gsc_context, &session_init_in,
 48				       sizeof(session_init_in),
 49				       &session_init_out,
 50				       sizeof(session_init_out));
 51	if (byte < 0) {
 52		drm_dbg_kms(display->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte);
 53		return byte;
 54	}
 55
 56	if (session_init_out.header.status != FW_HDCP_STATUS_SUCCESS) {
 57		drm_dbg_kms(display->drm, "FW cmd 0x%08X Failed. Status: 0x%X\n",
 58			    WIRED_INITIATE_HDCP2_SESSION,
 59			    session_init_out.header.status);
 60		return -EIO;
 61	}
 62
 63	ake_data->msg_id = HDCP_2_2_AKE_INIT;
 64	ake_data->tx_caps = session_init_out.tx_caps;
 65	memcpy(ake_data->r_tx, session_init_out.r_tx, HDCP_2_2_RTX_LEN);
 66
 67	return 0;
 68}
 69
 70static int
 71intel_hdcp_gsc_verify_receiver_cert_prepare_km(struct device *dev,
 72					       struct hdcp_port_data *data,
 73					       struct hdcp2_ake_send_cert *rx_cert,
 74					       bool *km_stored,
 75					       struct hdcp2_ake_no_stored_km
 76					       *ek_pub_km,
 77					       size_t *msg_sz)
 78{
 79	struct wired_cmd_verify_receiver_cert_in verify_rxcert_in = {};
 80	struct wired_cmd_verify_receiver_cert_out verify_rxcert_out = {};
 81	struct intel_hdcp_gsc_context *gsc_context;
 82	struct intel_display *display;
 83	ssize_t byte;
 84
 85	if (!dev || !data || !rx_cert || !km_stored || !ek_pub_km || !msg_sz)
 86		return -EINVAL;
 87
 88	display = to_intel_display(dev);
 89	if (!display) {
 90		dev_err(dev, "DRM not initialized, aborting HDCP.\n");
 91		return -ENODEV;
 92	}
 93	gsc_context = display->hdcp.gsc_context;
 94
 95	verify_rxcert_in.header.api_version = HDCP_API_VERSION;
 96	verify_rxcert_in.header.command_id = WIRED_VERIFY_RECEIVER_CERT;
 97	verify_rxcert_in.header.status = FW_HDCP_STATUS_SUCCESS;
 98	verify_rxcert_in.header.buffer_len =
 99				WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_IN;
100
101	verify_rxcert_in.port.integrated_port_type = data->port_type;
102	verify_rxcert_in.port.physical_port = (u8)data->hdcp_ddi;
103	verify_rxcert_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
104
105	verify_rxcert_in.cert_rx = rx_cert->cert_rx;
106	memcpy(verify_rxcert_in.r_rx, &rx_cert->r_rx, HDCP_2_2_RRX_LEN);
107	memcpy(verify_rxcert_in.rx_caps, rx_cert->rx_caps, HDCP_2_2_RXCAPS_LEN);
108
109	byte = intel_hdcp_gsc_msg_send(gsc_context, &verify_rxcert_in,
110				       sizeof(verify_rxcert_in),
111				       &verify_rxcert_out,
112				       sizeof(verify_rxcert_out));
113	if (byte < 0) {
114		drm_dbg_kms(display->drm, "intel_hdcp_gsc_msg_send failed: %zd\n", byte);
115		return byte;
116	}
117
118	if (verify_rxcert_out.header.status != FW_HDCP_STATUS_SUCCESS) {
119		drm_dbg_kms(display->drm, "FW cmd 0x%08X Failed. Status: 0x%X\n",
120			    WIRED_VERIFY_RECEIVER_CERT,
121			    verify_rxcert_out.header.status);
122		return -EIO;
123	}
124
125	*km_stored = !!verify_rxcert_out.km_stored;
126	if (verify_rxcert_out.km_stored) {
127		ek_pub_km->msg_id = HDCP_2_2_AKE_STORED_KM;
128		*msg_sz = sizeof(struct hdcp2_ake_stored_km);
129	} else {
130		ek_pub_km->msg_id = HDCP_2_2_AKE_NO_STORED_KM;
131		*msg_sz = sizeof(struct hdcp2_ake_no_stored_km);
132	}
133
134	memcpy(ek_pub_km->e_kpub_km, &verify_rxcert_out.ekm_buff,
135	       sizeof(verify_rxcert_out.ekm_buff));
136
137	return 0;
138}
139
140static int
141intel_hdcp_gsc_verify_hprime(struct device *dev, struct hdcp_port_data *data,
142			     struct hdcp2_ake_send_hprime *rx_hprime)
143{
144	struct wired_cmd_ake_send_hprime_in send_hprime_in = {};
145	struct wired_cmd_ake_send_hprime_out send_hprime_out = {};
146	struct intel_hdcp_gsc_context *gsc_context;
147	struct intel_display *display;
148	ssize_t byte;
149
150	if (!dev || !data || !rx_hprime)
151		return -EINVAL;
152
153	display = to_intel_display(dev);
154	if (!display) {
155		dev_err(dev, "DRM not initialized, aborting HDCP.\n");
156		return -ENODEV;
157	}
158	gsc_context = display->hdcp.gsc_context;
159
160	send_hprime_in.header.api_version = HDCP_API_VERSION;
161	send_hprime_in.header.command_id = WIRED_AKE_SEND_HPRIME;
162	send_hprime_in.header.status = FW_HDCP_STATUS_SUCCESS;
163	send_hprime_in.header.buffer_len = WIRED_CMD_BUF_LEN_AKE_SEND_HPRIME_IN;
164
165	send_hprime_in.port.integrated_port_type = data->port_type;
166	send_hprime_in.port.physical_port = (u8)data->hdcp_ddi;
167	send_hprime_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
168
169	memcpy(send_hprime_in.h_prime, rx_hprime->h_prime,
170	       HDCP_2_2_H_PRIME_LEN);
171
172	byte = intel_hdcp_gsc_msg_send(gsc_context, &send_hprime_in,
173				       sizeof(send_hprime_in),
174				       &send_hprime_out,
175				       sizeof(send_hprime_out));
176	if (byte < 0) {
177		drm_dbg_kms(display->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte);
178		return byte;
179	}
180
181	if (send_hprime_out.header.status != FW_HDCP_STATUS_SUCCESS) {
182		drm_dbg_kms(display->drm, "FW cmd 0x%08X Failed. Status: 0x%X\n",
183			    WIRED_AKE_SEND_HPRIME, send_hprime_out.header.status);
184		return -EIO;
185	}
186
187	return 0;
188}
189
190static int
191intel_hdcp_gsc_store_pairing_info(struct device *dev, struct hdcp_port_data *data,
192				  struct hdcp2_ake_send_pairing_info *pairing_info)
193{
194	struct wired_cmd_ake_send_pairing_info_in pairing_info_in = {};
195	struct wired_cmd_ake_send_pairing_info_out pairing_info_out = {};
196	struct intel_hdcp_gsc_context *gsc_context;
197	struct intel_display *display;
198	ssize_t byte;
199
200	if (!dev || !data || !pairing_info)
201		return -EINVAL;
202
203	display = to_intel_display(dev);
204	if (!display) {
205		dev_err(dev, "DRM not initialized, aborting HDCP.\n");
206		return -ENODEV;
207	}
208	gsc_context = display->hdcp.gsc_context;
209
210	pairing_info_in.header.api_version = HDCP_API_VERSION;
211	pairing_info_in.header.command_id = WIRED_AKE_SEND_PAIRING_INFO;
212	pairing_info_in.header.status = FW_HDCP_STATUS_SUCCESS;
213	pairing_info_in.header.buffer_len =
214					WIRED_CMD_BUF_LEN_SEND_PAIRING_INFO_IN;
215
216	pairing_info_in.port.integrated_port_type = data->port_type;
217	pairing_info_in.port.physical_port = (u8)data->hdcp_ddi;
218	pairing_info_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
219
220	memcpy(pairing_info_in.e_kh_km, pairing_info->e_kh_km,
221	       HDCP_2_2_E_KH_KM_LEN);
222
223	byte = intel_hdcp_gsc_msg_send(gsc_context, &pairing_info_in,
224				       sizeof(pairing_info_in),
225				       &pairing_info_out,
226				       sizeof(pairing_info_out));
227	if (byte < 0) {
228		drm_dbg_kms(display->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte);
229		return byte;
230	}
231
232	if (pairing_info_out.header.status != FW_HDCP_STATUS_SUCCESS) {
233		drm_dbg_kms(display->drm, "FW cmd 0x%08X failed. Status: 0x%X\n",
234			    WIRED_AKE_SEND_PAIRING_INFO,
235			    pairing_info_out.header.status);
236		return -EIO;
237	}
238
239	return 0;
240}
241
242static int
243intel_hdcp_gsc_initiate_locality_check(struct device *dev,
244				       struct hdcp_port_data *data,
245				       struct hdcp2_lc_init *lc_init_data)
246{
247	struct wired_cmd_init_locality_check_in lc_init_in = {};
248	struct wired_cmd_init_locality_check_out lc_init_out = {};
249	struct intel_hdcp_gsc_context *gsc_context;
250	struct intel_display *display;
251	ssize_t byte;
252
253	if (!dev || !data || !lc_init_data)
254		return -EINVAL;
255
256	display = to_intel_display(dev);
257	if (!display) {
258		dev_err(dev, "DRM not initialized, aborting HDCP.\n");
259		return -ENODEV;
260	}
261	gsc_context = display->hdcp.gsc_context;
262
263	lc_init_in.header.api_version = HDCP_API_VERSION;
264	lc_init_in.header.command_id = WIRED_INIT_LOCALITY_CHECK;
265	lc_init_in.header.status = FW_HDCP_STATUS_SUCCESS;
266	lc_init_in.header.buffer_len = WIRED_CMD_BUF_LEN_INIT_LOCALITY_CHECK_IN;
267
268	lc_init_in.port.integrated_port_type = data->port_type;
269	lc_init_in.port.physical_port = (u8)data->hdcp_ddi;
270	lc_init_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
271
272	byte = intel_hdcp_gsc_msg_send(gsc_context, &lc_init_in, sizeof(lc_init_in),
273				       &lc_init_out, sizeof(lc_init_out));
274	if (byte < 0) {
275		drm_dbg_kms(display->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte);
276		return byte;
277	}
278
279	if (lc_init_out.header.status != FW_HDCP_STATUS_SUCCESS) {
280		drm_dbg_kms(display->drm, "FW cmd 0x%08X Failed. status: 0x%X\n",
281			    WIRED_INIT_LOCALITY_CHECK, lc_init_out.header.status);
282		return -EIO;
283	}
284
285	lc_init_data->msg_id = HDCP_2_2_LC_INIT;
286	memcpy(lc_init_data->r_n, lc_init_out.r_n, HDCP_2_2_RN_LEN);
287
288	return 0;
289}
290
291static int
292intel_hdcp_gsc_verify_lprime(struct device *dev, struct hdcp_port_data *data,
293			     struct hdcp2_lc_send_lprime *rx_lprime)
294{
295	struct wired_cmd_validate_locality_in verify_lprime_in = {};
296	struct wired_cmd_validate_locality_out verify_lprime_out = {};
297	struct intel_hdcp_gsc_context *gsc_context;
298	struct intel_display *display;
299	ssize_t byte;
300
301	if (!dev || !data || !rx_lprime)
302		return -EINVAL;
303
304	display = to_intel_display(dev);
305	if (!display) {
306		dev_err(dev, "DRM not initialized, aborting HDCP.\n");
307		return -ENODEV;
308	}
309	gsc_context = display->hdcp.gsc_context;
310
311	verify_lprime_in.header.api_version = HDCP_API_VERSION;
312	verify_lprime_in.header.command_id = WIRED_VALIDATE_LOCALITY;
313	verify_lprime_in.header.status = FW_HDCP_STATUS_SUCCESS;
314	verify_lprime_in.header.buffer_len =
315					WIRED_CMD_BUF_LEN_VALIDATE_LOCALITY_IN;
316
317	verify_lprime_in.port.integrated_port_type = data->port_type;
318	verify_lprime_in.port.physical_port = (u8)data->hdcp_ddi;
319	verify_lprime_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
320
321	memcpy(verify_lprime_in.l_prime, rx_lprime->l_prime,
322	       HDCP_2_2_L_PRIME_LEN);
323
324	byte = intel_hdcp_gsc_msg_send(gsc_context, &verify_lprime_in,
325				       sizeof(verify_lprime_in),
326				       &verify_lprime_out,
327				       sizeof(verify_lprime_out));
328	if (byte < 0) {
329		drm_dbg_kms(display->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte);
330		return byte;
331	}
332
333	if (verify_lprime_out.header.status != FW_HDCP_STATUS_SUCCESS) {
334		drm_dbg_kms(display->drm, "FW cmd 0x%08X failed. status: 0x%X\n",
335			    WIRED_VALIDATE_LOCALITY,
336			    verify_lprime_out.header.status);
337		return -EIO;
338	}
339
340	return 0;
341}
342
343static int
344intel_hdcp_gsc_get_session_key(struct device *dev,
345			       struct hdcp_port_data *data,
346			       struct hdcp2_ske_send_eks *ske_data)
347{
348	struct wired_cmd_get_session_key_in get_skey_in = {};
349	struct wired_cmd_get_session_key_out get_skey_out = {};
350	struct intel_hdcp_gsc_context *gsc_context;
351	struct intel_display *display;
352	ssize_t byte;
353
354	if (!dev || !data || !ske_data)
355		return -EINVAL;
356
357	display = to_intel_display(dev);
358	if (!display) {
359		dev_err(dev, "DRM not initialized, aborting HDCP.\n");
360		return -ENODEV;
361	}
362	gsc_context = display->hdcp.gsc_context;
363
364	get_skey_in.header.api_version = HDCP_API_VERSION;
365	get_skey_in.header.command_id = WIRED_GET_SESSION_KEY;
366	get_skey_in.header.status = FW_HDCP_STATUS_SUCCESS;
367	get_skey_in.header.buffer_len = WIRED_CMD_BUF_LEN_GET_SESSION_KEY_IN;
368
369	get_skey_in.port.integrated_port_type = data->port_type;
370	get_skey_in.port.physical_port = (u8)data->hdcp_ddi;
371	get_skey_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
372
373	byte = intel_hdcp_gsc_msg_send(gsc_context, &get_skey_in, sizeof(get_skey_in),
374				       &get_skey_out, sizeof(get_skey_out));
375	if (byte < 0) {
376		drm_dbg_kms(display->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte);
377		return byte;
378	}
379
380	if (get_skey_out.header.status != FW_HDCP_STATUS_SUCCESS) {
381		drm_dbg_kms(display->drm, "FW cmd 0x%08X failed. status: 0x%X\n",
382			    WIRED_GET_SESSION_KEY, get_skey_out.header.status);
383		return -EIO;
384	}
385
386	ske_data->msg_id = HDCP_2_2_SKE_SEND_EKS;
387	memcpy(ske_data->e_dkey_ks, get_skey_out.e_dkey_ks,
388	       HDCP_2_2_E_DKEY_KS_LEN);
389	memcpy(ske_data->riv, get_skey_out.r_iv, HDCP_2_2_RIV_LEN);
390
391	return 0;
392}
393
394static int
395intel_hdcp_gsc_repeater_check_flow_prepare_ack(struct device *dev,
396					       struct hdcp_port_data *data,
397					       struct hdcp2_rep_send_receiverid_list
398					       *rep_topology,
399					       struct hdcp2_rep_send_ack
400					       *rep_send_ack)
401{
402	struct wired_cmd_verify_repeater_in verify_repeater_in = {};
403	struct wired_cmd_verify_repeater_out verify_repeater_out = {};
404	struct intel_hdcp_gsc_context *gsc_context;
405	struct intel_display *display;
406	ssize_t byte;
407
408	if (!dev || !rep_topology || !rep_send_ack || !data)
409		return -EINVAL;
410
411	display = to_intel_display(dev);
412	if (!display) {
413		dev_err(dev, "DRM not initialized, aborting HDCP.\n");
414		return -ENODEV;
415	}
416	gsc_context = display->hdcp.gsc_context;
417
418	verify_repeater_in.header.api_version = HDCP_API_VERSION;
419	verify_repeater_in.header.command_id = WIRED_VERIFY_REPEATER;
420	verify_repeater_in.header.status = FW_HDCP_STATUS_SUCCESS;
421	verify_repeater_in.header.buffer_len =
422					WIRED_CMD_BUF_LEN_VERIFY_REPEATER_IN;
423
424	verify_repeater_in.port.integrated_port_type = data->port_type;
425	verify_repeater_in.port.physical_port = (u8)data->hdcp_ddi;
426	verify_repeater_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
427
428	memcpy(verify_repeater_in.rx_info, rep_topology->rx_info,
429	       HDCP_2_2_RXINFO_LEN);
430	memcpy(verify_repeater_in.seq_num_v, rep_topology->seq_num_v,
431	       HDCP_2_2_SEQ_NUM_LEN);
432	memcpy(verify_repeater_in.v_prime, rep_topology->v_prime,
433	       HDCP_2_2_V_PRIME_HALF_LEN);
434	memcpy(verify_repeater_in.receiver_ids, rep_topology->receiver_ids,
435	       HDCP_2_2_RECEIVER_IDS_MAX_LEN);
436
437	byte = intel_hdcp_gsc_msg_send(gsc_context, &verify_repeater_in,
438				       sizeof(verify_repeater_in),
439				       &verify_repeater_out,
440				       sizeof(verify_repeater_out));
441	if (byte < 0) {
442		drm_dbg_kms(display->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte);
443		return byte;
444	}
445
446	if (verify_repeater_out.header.status != FW_HDCP_STATUS_SUCCESS) {
447		drm_dbg_kms(display->drm, "FW cmd 0x%08X failed. status: 0x%X\n",
448			    WIRED_VERIFY_REPEATER,
449			    verify_repeater_out.header.status);
450		return -EIO;
451	}
452
453	memcpy(rep_send_ack->v, verify_repeater_out.v,
454	       HDCP_2_2_V_PRIME_HALF_LEN);
455	rep_send_ack->msg_id = HDCP_2_2_REP_SEND_ACK;
456
457	return 0;
458}
459
460static int
461intel_hdcp_gsc_verify_mprime(struct device *dev,
462			     struct hdcp_port_data *data,
463			     struct hdcp2_rep_stream_ready *stream_ready)
464{
465	struct wired_cmd_repeater_auth_stream_req_in *verify_mprime_in;
466	struct wired_cmd_repeater_auth_stream_req_out verify_mprime_out = {};
467	struct intel_hdcp_gsc_context *gsc_context;
468	struct intel_display *display;
469	ssize_t byte;
470	size_t cmd_size;
471
472	if (!dev || !stream_ready || !data)
473		return -EINVAL;
474
475	display = to_intel_display(dev);
476	if (!display) {
477		dev_err(dev, "DRM not initialized, aborting HDCP.\n");
478		return -ENODEV;
479	}
480	gsc_context = display->hdcp.gsc_context;
481
482	cmd_size = struct_size(verify_mprime_in, streams, data->k);
483	if (cmd_size == SIZE_MAX)
484		return -EINVAL;
485
486	verify_mprime_in = kzalloc(cmd_size, GFP_KERNEL);
487	if (!verify_mprime_in)
488		return -ENOMEM;
489
490	verify_mprime_in->header.api_version = HDCP_API_VERSION;
491	verify_mprime_in->header.command_id = WIRED_REPEATER_AUTH_STREAM_REQ;
492	verify_mprime_in->header.status = FW_HDCP_STATUS_SUCCESS;
493	verify_mprime_in->header.buffer_len = cmd_size  - sizeof(verify_mprime_in->header);
494
495	verify_mprime_in->port.integrated_port_type = data->port_type;
496	verify_mprime_in->port.physical_port = (u8)data->hdcp_ddi;
497	verify_mprime_in->port.attached_transcoder = (u8)data->hdcp_transcoder;
498
499	memcpy(verify_mprime_in->m_prime, stream_ready->m_prime, HDCP_2_2_MPRIME_LEN);
500	drm_hdcp_cpu_to_be24(verify_mprime_in->seq_num_m, data->seq_num_m);
501
502	memcpy(verify_mprime_in->streams, data->streams,
503	       array_size(data->k, sizeof(*data->streams)));
504
505	verify_mprime_in->k = cpu_to_be16(data->k);
506
507	byte = intel_hdcp_gsc_msg_send(gsc_context, verify_mprime_in, cmd_size,
508				       &verify_mprime_out,
509				       sizeof(verify_mprime_out));
510	kfree(verify_mprime_in);
511	if (byte < 0) {
512		drm_dbg_kms(display->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte);
513		return byte;
514	}
515
516	if (verify_mprime_out.header.status != FW_HDCP_STATUS_SUCCESS) {
517		drm_dbg_kms(display->drm, "FW cmd 0x%08X failed. status: 0x%X\n",
518			    WIRED_REPEATER_AUTH_STREAM_REQ,
519			    verify_mprime_out.header.status);
520		return -EIO;
521	}
522
523	return 0;
524}
525
526static int intel_hdcp_gsc_enable_authentication(struct device *dev,
527						struct hdcp_port_data *data)
528{
529	struct wired_cmd_enable_auth_in enable_auth_in = {};
530	struct wired_cmd_enable_auth_out enable_auth_out = {};
531	struct intel_hdcp_gsc_context *gsc_context;
532	struct intel_display *display;
533	ssize_t byte;
534
535	if (!dev || !data)
536		return -EINVAL;
537
538	display = to_intel_display(dev);
539	if (!display) {
540		dev_err(dev, "DRM not initialized, aborting HDCP.\n");
541		return -ENODEV;
542	}
543	gsc_context = display->hdcp.gsc_context;
544
545	enable_auth_in.header.api_version = HDCP_API_VERSION;
546	enable_auth_in.header.command_id = WIRED_ENABLE_AUTH;
547	enable_auth_in.header.status = FW_HDCP_STATUS_SUCCESS;
548	enable_auth_in.header.buffer_len = WIRED_CMD_BUF_LEN_ENABLE_AUTH_IN;
549
550	enable_auth_in.port.integrated_port_type = data->port_type;
551	enable_auth_in.port.physical_port = (u8)data->hdcp_ddi;
552	enable_auth_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
553	enable_auth_in.stream_type = data->streams[0].stream_type;
554
555	byte = intel_hdcp_gsc_msg_send(gsc_context, &enable_auth_in,
556				       sizeof(enable_auth_in),
557				       &enable_auth_out,
558				       sizeof(enable_auth_out));
559	if (byte < 0) {
560		drm_dbg_kms(display->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte);
561		return byte;
562	}
563
564	if (enable_auth_out.header.status != FW_HDCP_STATUS_SUCCESS) {
565		drm_dbg_kms(display->drm, "FW cmd 0x%08X failed. status: 0x%X\n",
566			    WIRED_ENABLE_AUTH, enable_auth_out.header.status);
567		return -EIO;
568	}
569
570	return 0;
571}
572
573static int
574intel_hdcp_gsc_close_session(struct device *dev, struct hdcp_port_data *data)
575{
576	struct wired_cmd_close_session_in session_close_in = {};
577	struct wired_cmd_close_session_out session_close_out = {};
578	struct intel_hdcp_gsc_context *gsc_context;
579	struct intel_display *display;
580	ssize_t byte;
581
582	if (!dev || !data)
583		return -EINVAL;
584
585	display = to_intel_display(dev);
586	if (!display) {
587		dev_err(dev, "DRM not initialized, aborting HDCP.\n");
588		return -ENODEV;
589	}
590	gsc_context = display->hdcp.gsc_context;
591
592	session_close_in.header.api_version = HDCP_API_VERSION;
593	session_close_in.header.command_id = WIRED_CLOSE_SESSION;
594	session_close_in.header.status = FW_HDCP_STATUS_SUCCESS;
595	session_close_in.header.buffer_len =
596				WIRED_CMD_BUF_LEN_CLOSE_SESSION_IN;
597
598	session_close_in.port.integrated_port_type = data->port_type;
599	session_close_in.port.physical_port = (u8)data->hdcp_ddi;
600	session_close_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
601
602	byte = intel_hdcp_gsc_msg_send(gsc_context, &session_close_in,
603				       sizeof(session_close_in),
604				       &session_close_out,
605				       sizeof(session_close_out));
606	if (byte < 0) {
607		drm_dbg_kms(display->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte);
608		return byte;
609	}
610
611	if (session_close_out.header.status != FW_HDCP_STATUS_SUCCESS) {
612		drm_dbg_kms(display->drm, "Session Close Failed. status: 0x%X\n",
613			    session_close_out.header.status);
614		return -EIO;
615	}
616
617	return 0;
618}
619
620static const struct i915_hdcp_ops gsc_hdcp_ops = {
621	.initiate_hdcp2_session = intel_hdcp_gsc_initiate_session,
622	.verify_receiver_cert_prepare_km =
623				intel_hdcp_gsc_verify_receiver_cert_prepare_km,
624	.verify_hprime = intel_hdcp_gsc_verify_hprime,
625	.store_pairing_info = intel_hdcp_gsc_store_pairing_info,
626	.initiate_locality_check = intel_hdcp_gsc_initiate_locality_check,
627	.verify_lprime = intel_hdcp_gsc_verify_lprime,
628	.get_session_key = intel_hdcp_gsc_get_session_key,
629	.repeater_check_flow_prepare_ack =
630				intel_hdcp_gsc_repeater_check_flow_prepare_ack,
631	.verify_mprime = intel_hdcp_gsc_verify_mprime,
632	.enable_hdcp_authentication = intel_hdcp_gsc_enable_authentication,
633	.close_hdcp_session = intel_hdcp_gsc_close_session,
634};
635
636int intel_hdcp_gsc_init(struct intel_display *display)
637{
638	struct intel_hdcp_gsc_context *gsc_context;
639	struct i915_hdcp_arbiter *arbiter;
640	int ret = 0;
641
642	arbiter = kzalloc(sizeof(*arbiter), GFP_KERNEL);
643	if (!arbiter)
644		return -ENOMEM;
645
646	mutex_lock(&display->hdcp.hdcp_mutex);
647
648	gsc_context = intel_hdcp_gsc_context_alloc(display->drm);
649	if (IS_ERR(gsc_context)) {
650		ret = PTR_ERR(gsc_context);
651		kfree(arbiter);
652		goto out;
653	}
654
655	display->hdcp.arbiter = arbiter;
656	display->hdcp.arbiter->hdcp_dev = display->drm->dev;
657	display->hdcp.arbiter->ops = &gsc_hdcp_ops;
658	display->hdcp.gsc_context = gsc_context;
659
660out:
661	mutex_unlock(&display->hdcp.hdcp_mutex);
662
663	return ret;
664}
665
666void intel_hdcp_gsc_fini(struct intel_display *display)
667{
668	intel_hdcp_gsc_context_free(display->hdcp.gsc_context);
669	display->hdcp.gsc_context = NULL;
670	kfree(display->hdcp.arbiter);
671	display->hdcp.arbiter = NULL;
672}