From 3ac2a0b9bbbb8138971c6df6086719ebb4bdb7ae Mon Sep 17 00:00:00 2001 From: Jani Nikula Date: Thu, 24 Apr 2025 23:01:38 +0300 Subject: [PATCH] drm/i915/hdcp: pass the context to the HDCP GSC message interface The opaque HDCP GSC context nicely abstracts the differences between drivers. Pass that instead of struct drm_i915_private or struct xe_device to intel_hdcp_gsc_msg_send(). We can store the driver specific data in the context. This lets us drop the dependency on i915_drv.h from intel_hdcp_gsc_message.c. Cc: Suraj Kandpal Reviewed-by: Suraj Kandpal Link: https://lore.kernel.org/r/df1653212f9014e717701b017e78e0017884b870.1745524803.git.jani.nikula@intel.com Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/display/intel_hdcp_gsc.c | 11 +-- drivers/gpu/drm/i915/display/intel_hdcp_gsc.h | 7 +- .../drm/i915/display/intel_hdcp_gsc_message.c | 70 ++++++++++--------- drivers/gpu/drm/xe/display/xe_hdcp_gsc.c | 12 ++-- 4 files changed, 52 insertions(+), 48 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_hdcp_gsc.c b/drivers/gpu/drm/i915/display/intel_hdcp_gsc.c index efcd3a4b41ed..77c4df6c6181 100644 --- a/drivers/gpu/drm/i915/display/intel_hdcp_gsc.c +++ b/drivers/gpu/drm/i915/display/intel_hdcp_gsc.c @@ -13,6 +13,7 @@ #include "intel_hdcp_gsc.h" struct intel_hdcp_gsc_context { + struct drm_i915_private *i915; struct i915_vma *vma; void *hdcp_cmd_in; void *hdcp_cmd_out; @@ -80,6 +81,7 @@ static int intel_hdcp_gsc_initialize_message(struct drm_i915_private *i915, gsc_context->hdcp_cmd_in = cmd_in; gsc_context->hdcp_cmd_out = cmd_out; gsc_context->vma = vma; + gsc_context->i915 = i915; return 0; @@ -171,14 +173,14 @@ static int intel_gsc_send_sync(struct drm_i915_private *i915, * gsc cs memory header as stated in specs after which the normal HDCP payload * will follow */ -ssize_t intel_hdcp_gsc_msg_send(struct drm_i915_private *i915, u8 *msg_in, - size_t msg_in_len, u8 *msg_out, - size_t msg_out_len) +ssize_t intel_hdcp_gsc_msg_send(struct intel_hdcp_gsc_context *gsc_context, + u8 *msg_in, size_t msg_in_len, + u8 *msg_out, size_t msg_out_len) { + struct drm_i915_private *i915 = gsc_context->i915; struct intel_gt *gt = i915->media_gt; struct intel_gsc_mtl_header *header_in, *header_out; const size_t max_msg_size = PAGE_SIZE - sizeof(*header_in); - struct intel_hdcp_gsc_context *gsc_context; u64 addr_in, addr_out, host_session_id; u32 reply_size, msg_size_in, msg_size_out; int ret, tries = 0; @@ -191,7 +193,6 @@ ssize_t intel_hdcp_gsc_msg_send(struct drm_i915_private *i915, u8 *msg_in, msg_size_in = msg_in_len + sizeof(*header_in); msg_size_out = msg_out_len + sizeof(*header_out); - gsc_context = i915->display.hdcp.gsc_context; header_in = gsc_context->hdcp_cmd_in; header_out = gsc_context->hdcp_cmd_out; addr_in = i915_ggtt_offset(gsc_context->vma); diff --git a/drivers/gpu/drm/i915/display/intel_hdcp_gsc.h b/drivers/gpu/drm/i915/display/intel_hdcp_gsc.h index 227c00a837d8..7133e631a938 100644 --- a/drivers/gpu/drm/i915/display/intel_hdcp_gsc.h +++ b/drivers/gpu/drm/i915/display/intel_hdcp_gsc.h @@ -9,14 +9,13 @@ #include #include -struct drm_i915_private; struct intel_display; struct intel_hdcp_gsc_context; bool intel_hdcp_gsc_cs_required(struct intel_display *display); -ssize_t intel_hdcp_gsc_msg_send(struct drm_i915_private *i915, u8 *msg_in, - size_t msg_in_len, u8 *msg_out, - size_t msg_out_len); +ssize_t intel_hdcp_gsc_msg_send(struct intel_hdcp_gsc_context *gsc_context, + u8 *msg_in, size_t msg_in_len, + u8 *msg_out, size_t msg_out_len); bool intel_hdcp_gsc_check_status(struct intel_display *display); struct intel_hdcp_gsc_context *intel_hdcp_gsc_context_alloc(struct intel_display *display); diff --git a/drivers/gpu/drm/i915/display/intel_hdcp_gsc_message.c b/drivers/gpu/drm/i915/display/intel_hdcp_gsc_message.c index 92143226858c..d87f61d773ca 100644 --- a/drivers/gpu/drm/i915/display/intel_hdcp_gsc_message.c +++ b/drivers/gpu/drm/i915/display/intel_hdcp_gsc_message.c @@ -4,9 +4,11 @@ */ #include + +#include #include -#include "i915_drv.h" +#include "intel_display_core.h" #include "intel_display_types.h" #include "intel_hdcp_gsc.h" #include "intel_hdcp_gsc_message.h" @@ -17,8 +19,8 @@ intel_hdcp_gsc_initiate_session(struct device *dev, struct hdcp_port_data *data, { struct wired_cmd_initiate_hdcp2_session_in session_init_in = {}; struct wired_cmd_initiate_hdcp2_session_out session_init_out = {}; + struct intel_hdcp_gsc_context *gsc_context; struct intel_display *display; - struct drm_i915_private *i915; ssize_t byte; if (!dev || !data || !ake_data) @@ -29,7 +31,7 @@ intel_hdcp_gsc_initiate_session(struct device *dev, struct hdcp_port_data *data, dev_err(dev, "DRM not initialized, aborting HDCP.\n"); return -ENODEV; } - i915 = to_i915(display->drm); + gsc_context = display->hdcp.gsc_context; session_init_in.header.api_version = HDCP_API_VERSION; session_init_in.header.command_id = WIRED_INITIATE_HDCP2_SESSION; @@ -42,7 +44,7 @@ intel_hdcp_gsc_initiate_session(struct device *dev, struct hdcp_port_data *data, session_init_in.port.attached_transcoder = (u8)data->hdcp_transcoder; session_init_in.protocol = data->protocol; - byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&session_init_in, + byte = intel_hdcp_gsc_msg_send(gsc_context, (u8 *)&session_init_in, sizeof(session_init_in), (u8 *)&session_init_out, sizeof(session_init_out)); @@ -76,8 +78,8 @@ intel_hdcp_gsc_verify_receiver_cert_prepare_km(struct device *dev, { struct wired_cmd_verify_receiver_cert_in verify_rxcert_in = {}; struct wired_cmd_verify_receiver_cert_out verify_rxcert_out = {}; + struct intel_hdcp_gsc_context *gsc_context; struct intel_display *display; - struct drm_i915_private *i915; ssize_t byte; if (!dev || !data || !rx_cert || !km_stored || !ek_pub_km || !msg_sz) @@ -88,7 +90,7 @@ intel_hdcp_gsc_verify_receiver_cert_prepare_km(struct device *dev, dev_err(dev, "DRM not initialized, aborting HDCP.\n"); return -ENODEV; } - i915 = to_i915(display->drm); + gsc_context = display->hdcp.gsc_context; verify_rxcert_in.header.api_version = HDCP_API_VERSION; verify_rxcert_in.header.command_id = WIRED_VERIFY_RECEIVER_CERT; @@ -104,7 +106,7 @@ intel_hdcp_gsc_verify_receiver_cert_prepare_km(struct device *dev, memcpy(verify_rxcert_in.r_rx, &rx_cert->r_rx, HDCP_2_2_RRX_LEN); memcpy(verify_rxcert_in.rx_caps, rx_cert->rx_caps, HDCP_2_2_RXCAPS_LEN); - byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&verify_rxcert_in, + byte = intel_hdcp_gsc_msg_send(gsc_context, (u8 *)&verify_rxcert_in, sizeof(verify_rxcert_in), (u8 *)&verify_rxcert_out, sizeof(verify_rxcert_out)); @@ -141,8 +143,8 @@ intel_hdcp_gsc_verify_hprime(struct device *dev, struct hdcp_port_data *data, { struct wired_cmd_ake_send_hprime_in send_hprime_in = {}; struct wired_cmd_ake_send_hprime_out send_hprime_out = {}; + struct intel_hdcp_gsc_context *gsc_context; struct intel_display *display; - struct drm_i915_private *i915; ssize_t byte; if (!dev || !data || !rx_hprime) @@ -153,7 +155,7 @@ intel_hdcp_gsc_verify_hprime(struct device *dev, struct hdcp_port_data *data, dev_err(dev, "DRM not initialized, aborting HDCP.\n"); return -ENODEV; } - i915 = to_i915(display->drm); + gsc_context = display->hdcp.gsc_context; send_hprime_in.header.api_version = HDCP_API_VERSION; send_hprime_in.header.command_id = WIRED_AKE_SEND_HPRIME; @@ -167,7 +169,7 @@ intel_hdcp_gsc_verify_hprime(struct device *dev, struct hdcp_port_data *data, memcpy(send_hprime_in.h_prime, rx_hprime->h_prime, HDCP_2_2_H_PRIME_LEN); - byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&send_hprime_in, + byte = intel_hdcp_gsc_msg_send(gsc_context, (u8 *)&send_hprime_in, sizeof(send_hprime_in), (u8 *)&send_hprime_out, sizeof(send_hprime_out)); @@ -191,8 +193,8 @@ intel_hdcp_gsc_store_pairing_info(struct device *dev, struct hdcp_port_data *dat { struct wired_cmd_ake_send_pairing_info_in pairing_info_in = {}; struct wired_cmd_ake_send_pairing_info_out pairing_info_out = {}; + struct intel_hdcp_gsc_context *gsc_context; struct intel_display *display; - struct drm_i915_private *i915; ssize_t byte; if (!dev || !data || !pairing_info) @@ -203,7 +205,7 @@ intel_hdcp_gsc_store_pairing_info(struct device *dev, struct hdcp_port_data *dat dev_err(dev, "DRM not initialized, aborting HDCP.\n"); return -ENODEV; } - i915 = to_i915(display->drm); + gsc_context = display->hdcp.gsc_context; pairing_info_in.header.api_version = HDCP_API_VERSION; pairing_info_in.header.command_id = WIRED_AKE_SEND_PAIRING_INFO; @@ -218,7 +220,7 @@ intel_hdcp_gsc_store_pairing_info(struct device *dev, struct hdcp_port_data *dat memcpy(pairing_info_in.e_kh_km, pairing_info->e_kh_km, HDCP_2_2_E_KH_KM_LEN); - byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&pairing_info_in, + byte = intel_hdcp_gsc_msg_send(gsc_context, (u8 *)&pairing_info_in, sizeof(pairing_info_in), (u8 *)&pairing_info_out, sizeof(pairing_info_out)); @@ -244,8 +246,8 @@ intel_hdcp_gsc_initiate_locality_check(struct device *dev, { struct wired_cmd_init_locality_check_in lc_init_in = {}; struct wired_cmd_init_locality_check_out lc_init_out = {}; + struct intel_hdcp_gsc_context *gsc_context; struct intel_display *display; - struct drm_i915_private *i915; ssize_t byte; if (!dev || !data || !lc_init_data) @@ -256,7 +258,7 @@ intel_hdcp_gsc_initiate_locality_check(struct device *dev, dev_err(dev, "DRM not initialized, aborting HDCP.\n"); return -ENODEV; } - i915 = to_i915(display->drm); + gsc_context = display->hdcp.gsc_context; lc_init_in.header.api_version = HDCP_API_VERSION; lc_init_in.header.command_id = WIRED_INIT_LOCALITY_CHECK; @@ -267,7 +269,7 @@ intel_hdcp_gsc_initiate_locality_check(struct device *dev, lc_init_in.port.physical_port = (u8)data->hdcp_ddi; lc_init_in.port.attached_transcoder = (u8)data->hdcp_transcoder; - byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&lc_init_in, sizeof(lc_init_in), + byte = intel_hdcp_gsc_msg_send(gsc_context, (u8 *)&lc_init_in, sizeof(lc_init_in), (u8 *)&lc_init_out, sizeof(lc_init_out)); if (byte < 0) { drm_dbg_kms(display->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte); @@ -292,8 +294,8 @@ intel_hdcp_gsc_verify_lprime(struct device *dev, struct hdcp_port_data *data, { struct wired_cmd_validate_locality_in verify_lprime_in = {}; struct wired_cmd_validate_locality_out verify_lprime_out = {}; + struct intel_hdcp_gsc_context *gsc_context; struct intel_display *display; - struct drm_i915_private *i915; ssize_t byte; if (!dev || !data || !rx_lprime) @@ -304,7 +306,7 @@ intel_hdcp_gsc_verify_lprime(struct device *dev, struct hdcp_port_data *data, dev_err(dev, "DRM not initialized, aborting HDCP.\n"); return -ENODEV; } - i915 = to_i915(display->drm); + gsc_context = display->hdcp.gsc_context; verify_lprime_in.header.api_version = HDCP_API_VERSION; verify_lprime_in.header.command_id = WIRED_VALIDATE_LOCALITY; @@ -319,7 +321,7 @@ intel_hdcp_gsc_verify_lprime(struct device *dev, struct hdcp_port_data *data, memcpy(verify_lprime_in.l_prime, rx_lprime->l_prime, HDCP_2_2_L_PRIME_LEN); - byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&verify_lprime_in, + byte = intel_hdcp_gsc_msg_send(gsc_context, (u8 *)&verify_lprime_in, sizeof(verify_lprime_in), (u8 *)&verify_lprime_out, sizeof(verify_lprime_out)); @@ -345,8 +347,8 @@ intel_hdcp_gsc_get_session_key(struct device *dev, { struct wired_cmd_get_session_key_in get_skey_in = {}; struct wired_cmd_get_session_key_out get_skey_out = {}; + struct intel_hdcp_gsc_context *gsc_context; struct intel_display *display; - struct drm_i915_private *i915; ssize_t byte; if (!dev || !data || !ske_data) @@ -357,7 +359,7 @@ intel_hdcp_gsc_get_session_key(struct device *dev, dev_err(dev, "DRM not initialized, aborting HDCP.\n"); return -ENODEV; } - i915 = to_i915(display->drm); + gsc_context = display->hdcp.gsc_context; get_skey_in.header.api_version = HDCP_API_VERSION; get_skey_in.header.command_id = WIRED_GET_SESSION_KEY; @@ -368,7 +370,7 @@ intel_hdcp_gsc_get_session_key(struct device *dev, get_skey_in.port.physical_port = (u8)data->hdcp_ddi; get_skey_in.port.attached_transcoder = (u8)data->hdcp_transcoder; - byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&get_skey_in, sizeof(get_skey_in), + byte = intel_hdcp_gsc_msg_send(gsc_context, (u8 *)&get_skey_in, sizeof(get_skey_in), (u8 *)&get_skey_out, sizeof(get_skey_out)); if (byte < 0) { drm_dbg_kms(display->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte); @@ -399,8 +401,8 @@ intel_hdcp_gsc_repeater_check_flow_prepare_ack(struct device *dev, { struct wired_cmd_verify_repeater_in verify_repeater_in = {}; struct wired_cmd_verify_repeater_out verify_repeater_out = {}; + struct intel_hdcp_gsc_context *gsc_context; struct intel_display *display; - struct drm_i915_private *i915; ssize_t byte; if (!dev || !rep_topology || !rep_send_ack || !data) @@ -411,7 +413,7 @@ intel_hdcp_gsc_repeater_check_flow_prepare_ack(struct device *dev, dev_err(dev, "DRM not initialized, aborting HDCP.\n"); return -ENODEV; } - i915 = to_i915(display->drm); + gsc_context = display->hdcp.gsc_context; verify_repeater_in.header.api_version = HDCP_API_VERSION; verify_repeater_in.header.command_id = WIRED_VERIFY_REPEATER; @@ -432,7 +434,7 @@ intel_hdcp_gsc_repeater_check_flow_prepare_ack(struct device *dev, memcpy(verify_repeater_in.receiver_ids, rep_topology->receiver_ids, HDCP_2_2_RECEIVER_IDS_MAX_LEN); - byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&verify_repeater_in, + byte = intel_hdcp_gsc_msg_send(gsc_context, (u8 *)&verify_repeater_in, sizeof(verify_repeater_in), (u8 *)&verify_repeater_out, sizeof(verify_repeater_out)); @@ -462,8 +464,8 @@ intel_hdcp_gsc_verify_mprime(struct device *dev, { struct wired_cmd_repeater_auth_stream_req_in *verify_mprime_in; struct wired_cmd_repeater_auth_stream_req_out verify_mprime_out = {}; + struct intel_hdcp_gsc_context *gsc_context; struct intel_display *display; - struct drm_i915_private *i915; ssize_t byte; size_t cmd_size; @@ -475,7 +477,7 @@ intel_hdcp_gsc_verify_mprime(struct device *dev, dev_err(dev, "DRM not initialized, aborting HDCP.\n"); return -ENODEV; } - i915 = to_i915(display->drm); + gsc_context = display->hdcp.gsc_context; cmd_size = struct_size(verify_mprime_in, streams, data->k); if (cmd_size == SIZE_MAX) @@ -502,7 +504,7 @@ intel_hdcp_gsc_verify_mprime(struct device *dev, verify_mprime_in->k = cpu_to_be16(data->k); - byte = intel_hdcp_gsc_msg_send(i915, (u8 *)verify_mprime_in, cmd_size, + byte = intel_hdcp_gsc_msg_send(gsc_context, (u8 *)verify_mprime_in, cmd_size, (u8 *)&verify_mprime_out, sizeof(verify_mprime_out)); kfree(verify_mprime_in); @@ -526,8 +528,8 @@ static int intel_hdcp_gsc_enable_authentication(struct device *dev, { struct wired_cmd_enable_auth_in enable_auth_in = {}; struct wired_cmd_enable_auth_out enable_auth_out = {}; + struct intel_hdcp_gsc_context *gsc_context; struct intel_display *display; - struct drm_i915_private *i915; ssize_t byte; if (!dev || !data) @@ -538,7 +540,7 @@ static int intel_hdcp_gsc_enable_authentication(struct device *dev, dev_err(dev, "DRM not initialized, aborting HDCP.\n"); return -ENODEV; } - i915 = to_i915(display->drm); + gsc_context = display->hdcp.gsc_context; enable_auth_in.header.api_version = HDCP_API_VERSION; enable_auth_in.header.command_id = WIRED_ENABLE_AUTH; @@ -550,7 +552,7 @@ static int intel_hdcp_gsc_enable_authentication(struct device *dev, enable_auth_in.port.attached_transcoder = (u8)data->hdcp_transcoder; enable_auth_in.stream_type = data->streams[0].stream_type; - byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&enable_auth_in, + byte = intel_hdcp_gsc_msg_send(gsc_context, (u8 *)&enable_auth_in, sizeof(enable_auth_in), (u8 *)&enable_auth_out, sizeof(enable_auth_out)); @@ -573,8 +575,8 @@ intel_hdcp_gsc_close_session(struct device *dev, struct hdcp_port_data *data) { struct wired_cmd_close_session_in session_close_in = {}; struct wired_cmd_close_session_out session_close_out = {}; + struct intel_hdcp_gsc_context *gsc_context; struct intel_display *display; - struct drm_i915_private *i915; ssize_t byte; if (!dev || !data) @@ -585,7 +587,7 @@ intel_hdcp_gsc_close_session(struct device *dev, struct hdcp_port_data *data) dev_err(dev, "DRM not initialized, aborting HDCP.\n"); return -ENODEV; } - i915 = to_i915(display->drm); + gsc_context = display->hdcp.gsc_context; session_close_in.header.api_version = HDCP_API_VERSION; session_close_in.header.command_id = WIRED_CLOSE_SESSION; @@ -597,7 +599,7 @@ intel_hdcp_gsc_close_session(struct device *dev, struct hdcp_port_data *data) session_close_in.port.physical_port = (u8)data->hdcp_ddi; session_close_in.port.attached_transcoder = (u8)data->hdcp_transcoder; - byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&session_close_in, + byte = intel_hdcp_gsc_msg_send(gsc_context, (u8 *)&session_close_in, sizeof(session_close_in), (u8 *)&session_close_out, sizeof(session_close_out)); diff --git a/drivers/gpu/drm/xe/display/xe_hdcp_gsc.c b/drivers/gpu/drm/xe/display/xe_hdcp_gsc.c index 16458c1ddbe6..7b8237a5aeee 100644 --- a/drivers/gpu/drm/xe/display/xe_hdcp_gsc.c +++ b/drivers/gpu/drm/xe/display/xe_hdcp_gsc.c @@ -22,6 +22,7 @@ #define HECI_MEADDRESS_HDCP 18 struct intel_hdcp_gsc_context { + struct xe_device *xe; struct xe_bo *hdcp_bo; u64 hdcp_cmd_in; u64 hdcp_cmd_out; @@ -95,6 +96,8 @@ static int intel_hdcp_gsc_initialize_message(struct intel_display *display, gsc_context->hdcp_bo = bo; gsc_context->hdcp_cmd_in = cmd_in; gsc_context->hdcp_cmd_out = cmd_out; + gsc_context->xe = xe; + out: return ret; } @@ -157,12 +160,12 @@ static int xe_gsc_send_sync(struct xe_device *xe, return ret; } -ssize_t intel_hdcp_gsc_msg_send(struct xe_device *xe, u8 *msg_in, - size_t msg_in_len, u8 *msg_out, - size_t msg_out_len) +ssize_t intel_hdcp_gsc_msg_send(struct intel_hdcp_gsc_context *gsc_context, + u8 *msg_in, size_t msg_in_len, + u8 *msg_out, size_t msg_out_len) { + struct xe_device *xe = gsc_context->xe; const size_t max_msg_size = PAGE_SIZE - HDCP_GSC_HEADER_SIZE; - struct intel_hdcp_gsc_context *gsc_context; u64 host_session_id; u32 msg_size_in, msg_size_out; u32 addr_out_off, addr_in_wr_off = 0; @@ -175,7 +178,6 @@ ssize_t intel_hdcp_gsc_msg_send(struct xe_device *xe, u8 *msg_in, msg_size_in = msg_in_len + HDCP_GSC_HEADER_SIZE; msg_size_out = msg_out_len + HDCP_GSC_HEADER_SIZE; - gsc_context = xe->display.hdcp.gsc_context; addr_out_off = PAGE_SIZE; host_session_id = xe_gsc_create_host_session_id(); -- 2.25.1