diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_hdcp_gsc.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_hdcp_gsc.c | 124 |
1 files changed, 42 insertions, 82 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_hdcp_gsc.c b/drivers/gpu/drm/i915/display/intel_hdcp_gsc.c index 302bff75b06c..6a22862d6be1 100644 --- a/drivers/gpu/drm/i915/display/intel_hdcp_gsc.c +++ b/drivers/gpu/drm/i915/display/intel_hdcp_gsc.c @@ -3,7 +3,7 @@ * Copyright 2023, Intel Corporation. */ -#include <drm/i915_hdcp_interface.h> +#include <drm/intel/i915_hdcp_interface.h> #include "gem/i915_gem_region.h" #include "gt/intel_gt.h" @@ -11,15 +11,17 @@ #include "i915_drv.h" #include "i915_utils.h" #include "intel_hdcp_gsc.h" -#include "intel_hdcp_gsc_message.h" -bool intel_hdcp_gsc_cs_required(struct drm_i915_private *i915) -{ - return DISPLAY_VER(i915) >= 14; -} +struct intel_hdcp_gsc_context { + struct drm_i915_private *i915; + struct i915_vma *vma; + void *hdcp_cmd_in; + void *hdcp_cmd_out; +}; -bool intel_hdcp_gsc_check_status(struct drm_i915_private *i915) +bool intel_hdcp_gsc_check_status(struct drm_device *drm) { + struct drm_i915_private *i915 = to_i915(drm); struct intel_gt *gt = i915->media_gt; struct intel_gsc_uc *gsc = gt ? >->uc.gsc : NULL; @@ -34,7 +36,7 @@ bool intel_hdcp_gsc_check_status(struct drm_i915_private *i915) /*This function helps allocate memory for the command that we will send to gsc cs */ static int intel_hdcp_gsc_initialize_message(struct drm_i915_private *i915, - struct intel_hdcp_gsc_message *hdcp_message) + struct intel_hdcp_gsc_context *gsc_context) { struct intel_gt *gt = i915->media_gt; struct drm_i915_gem_object *obj = NULL; @@ -71,9 +73,10 @@ static int intel_hdcp_gsc_initialize_message(struct drm_i915_private *i915, memset(cmd_in, 0, obj->base.size); - hdcp_message->hdcp_cmd_in = cmd_in; - hdcp_message->hdcp_cmd_out = cmd_out; - hdcp_message->vma = vma; + gsc_context->hdcp_cmd_in = cmd_in; + gsc_context->hdcp_cmd_out = cmd_out; + gsc_context->vma = vma; + gsc_context->i915 = i915; return 0; @@ -84,79 +87,37 @@ out_unpin: return err; } -static const struct i915_hdcp_ops gsc_hdcp_ops = { - .initiate_hdcp2_session = intel_hdcp_gsc_initiate_session, - .verify_receiver_cert_prepare_km = - intel_hdcp_gsc_verify_receiver_cert_prepare_km, - .verify_hprime = intel_hdcp_gsc_verify_hprime, - .store_pairing_info = intel_hdcp_gsc_store_pairing_info, - .initiate_locality_check = intel_hdcp_gsc_initiate_locality_check, - .verify_lprime = intel_hdcp_gsc_verify_lprime, - .get_session_key = intel_hdcp_gsc_get_session_key, - .repeater_check_flow_prepare_ack = - intel_hdcp_gsc_repeater_check_flow_prepare_ack, - .verify_mprime = intel_hdcp_gsc_verify_mprime, - .enable_hdcp_authentication = intel_hdcp_gsc_enable_authentication, - .close_hdcp_session = intel_hdcp_gsc_close_session, -}; - -static int intel_hdcp_gsc_hdcp2_init(struct drm_i915_private *i915) +struct intel_hdcp_gsc_context *intel_hdcp_gsc_context_alloc(struct drm_device *drm) { - struct intel_hdcp_gsc_message *hdcp_message; + struct drm_i915_private *i915 = to_i915(drm); + struct intel_hdcp_gsc_context *gsc_context; int ret; - hdcp_message = kzalloc(sizeof(*hdcp_message), GFP_KERNEL); - - if (!hdcp_message) - return -ENOMEM; + gsc_context = kzalloc(sizeof(*gsc_context), GFP_KERNEL); + if (!gsc_context) + return ERR_PTR(-ENOMEM); /* * NOTE: No need to lock the comp mutex here as it is already * going to be taken before this function called */ - i915->display.hdcp.hdcp_message = hdcp_message; - ret = intel_hdcp_gsc_initialize_message(i915, hdcp_message); - - if (ret) - drm_err(&i915->drm, "Could not initialize hdcp_message\n"); - - return ret; -} - -static void intel_hdcp_gsc_free_message(struct drm_i915_private *i915) -{ - struct intel_hdcp_gsc_message *hdcp_message = - i915->display.hdcp.hdcp_message; + ret = intel_hdcp_gsc_initialize_message(i915, gsc_context); + if (ret) { + drm_err(&i915->drm, "Could not initialize gsc_context\n"); + kfree(gsc_context); + gsc_context = ERR_PTR(ret); + } - hdcp_message->hdcp_cmd_in = NULL; - hdcp_message->hdcp_cmd_out = NULL; - i915_vma_unpin_and_release(&hdcp_message->vma, I915_VMA_RELEASE_MAP); - kfree(hdcp_message); + return gsc_context; } -int intel_hdcp_gsc_init(struct drm_i915_private *i915) +void intel_hdcp_gsc_context_free(struct intel_hdcp_gsc_context *gsc_context) { - struct i915_hdcp_arbiter *data; - int ret; - - data = kzalloc(sizeof(struct i915_hdcp_arbiter), GFP_KERNEL); - if (!data) - return -ENOMEM; + if (!gsc_context) + return; - mutex_lock(&i915->display.hdcp.hdcp_mutex); - i915->display.hdcp.arbiter = data; - i915->display.hdcp.arbiter->hdcp_dev = i915->drm.dev; - i915->display.hdcp.arbiter->ops = &gsc_hdcp_ops; - ret = intel_hdcp_gsc_hdcp2_init(i915); - mutex_unlock(&i915->display.hdcp.hdcp_mutex); - - return ret; -} - -void intel_hdcp_gsc_fini(struct drm_i915_private *i915) -{ - intel_hdcp_gsc_free_message(i915); - kfree(i915->display.hdcp.arbiter); + i915_vma_unpin_and_release(&gsc_context->vma, I915_VMA_RELEASE_MAP); + kfree(gsc_context); } static int intel_gsc_send_sync(struct drm_i915_private *i915, @@ -203,18 +164,18 @@ static int intel_gsc_send_sync(struct drm_i915_private *i915, /* * This function can now be used for sending requests and will also handle * receipt of reply messages hence no different function of message retrieval - * is required. We will initialize intel_hdcp_gsc_message structure then add + * is required. We will initialize intel_hdcp_gsc_context structure then add * 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, + void *msg_in, size_t msg_in_len, + void *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_message *hdcp_message; u64 addr_in, addr_out, host_session_id; u32 reply_size, msg_size_in, msg_size_out; int ret, tries = 0; @@ -227,10 +188,9 @@ 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); - hdcp_message = i915->display.hdcp.hdcp_message; - header_in = hdcp_message->hdcp_cmd_in; - header_out = hdcp_message->hdcp_cmd_out; - addr_in = i915_ggtt_offset(hdcp_message->vma); + header_in = gsc_context->hdcp_cmd_in; + header_out = gsc_context->hdcp_cmd_out; + addr_in = i915_ggtt_offset(gsc_context->vma); addr_out = addr_in + PAGE_SIZE; memset(header_in, 0, msg_size_in); @@ -238,7 +198,7 @@ ssize_t intel_hdcp_gsc_msg_send(struct drm_i915_private *i915, u8 *msg_in, get_random_bytes(&host_session_id, sizeof(u64)); intel_gsc_uc_heci_cmd_emit_mtl_header(header_in, HECI_MEADDRESS_HDCP, msg_size_in, host_session_id); - memcpy(hdcp_message->hdcp_cmd_in + sizeof(*header_in), msg_in, msg_in_len); + memcpy(gsc_context->hdcp_cmd_in + sizeof(*header_in), msg_in, msg_in_len); /* * Keep sending request in case the pending bit is set no need to add @@ -272,7 +232,7 @@ ssize_t intel_hdcp_gsc_msg_send(struct drm_i915_private *i915, u8 *msg_in, reply_size, (u32)msg_out_len); } - memcpy(msg_out, hdcp_message->hdcp_cmd_out + sizeof(*header_out), msg_out_len); + memcpy(msg_out, gsc_context->hdcp_cmd_out + sizeof(*header_out), msg_out_len); err: return ret; |