i915-$(CONFIG_PERF_EVENTS) += \
i915_pmu.o
+# core display adaptation
+i915-y += \
+ i915_hdcp_gsc.o
+
# "Graphics Technology" (aka we talk to the gpu)
gt-y += \
gt/gen2_engine_cs.o \
display/intel_frontbuffer.o \
display/intel_global_state.o \
display/intel_hdcp.o \
- display/intel_hdcp_gsc.o \
display/intel_hdcp_gsc_message.o \
display/intel_hotplug.o \
display/intel_hotplug_irq.o \
+++ /dev/null
-// SPDX-License-Identifier: MIT
-/*
- * Copyright 2023, Intel Corporation.
- */
-
-#include <drm/drm_print.h>
-#include <drm/intel/i915_hdcp_interface.h>
-
-#include "gem/i915_gem_region.h"
-#include "gt/intel_gt.h"
-#include "gt/uc/intel_gsc_uc_heci_cmd_submit.h"
-#include "i915_drv.h"
-#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;
-};
-
-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;
-
- if (!gsc || !intel_uc_fw_is_running(&gsc->fw)) {
- drm_dbg_kms(&i915->drm,
- "GSC components required for HDCP2.2 are not ready\n");
- return false;
- }
-
- return true;
-}
-
-/*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_context *gsc_context)
-{
- struct intel_gt *gt = i915->media_gt;
- struct drm_i915_gem_object *obj = NULL;
- struct i915_vma *vma = NULL;
- void *cmd_in, *cmd_out;
- int err;
-
- /* allocate object of two page for HDCP command memory and store it */
- obj = i915_gem_object_create_shmem(i915, 2 * PAGE_SIZE);
-
- if (IS_ERR(obj)) {
- drm_err(&i915->drm, "Failed to allocate HDCP streaming command!\n");
- return PTR_ERR(obj);
- }
-
- cmd_in = i915_gem_object_pin_map_unlocked(obj, intel_gt_coherent_map_type(gt, obj, true));
- if (IS_ERR(cmd_in)) {
- drm_err(&i915->drm, "Failed to map gsc message page!\n");
- err = PTR_ERR(cmd_in);
- goto out_unpin;
- }
-
- cmd_out = cmd_in + PAGE_SIZE;
-
- vma = i915_vma_instance(obj, >->ggtt->vm, NULL);
- if (IS_ERR(vma)) {
- err = PTR_ERR(vma);
- goto out_unmap;
- }
-
- err = i915_vma_pin(vma, 0, 0, PIN_GLOBAL | PIN_HIGH);
- if (err)
- goto out_unmap;
-
- memset(cmd_in, 0, obj->base.size);
-
- gsc_context->hdcp_cmd_in = cmd_in;
- gsc_context->hdcp_cmd_out = cmd_out;
- gsc_context->vma = vma;
- gsc_context->i915 = i915;
-
- return 0;
-
-out_unmap:
- i915_gem_object_unpin_map(obj);
-out_unpin:
- i915_gem_object_put(obj);
- return err;
-}
-
-struct intel_hdcp_gsc_context *intel_hdcp_gsc_context_alloc(struct drm_device *drm)
-{
- struct drm_i915_private *i915 = to_i915(drm);
- struct intel_hdcp_gsc_context *gsc_context;
- int ret;
-
- 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
- */
- 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);
- }
-
- return gsc_context;
-}
-
-void intel_hdcp_gsc_context_free(struct intel_hdcp_gsc_context *gsc_context)
-{
- if (!gsc_context)
- return;
-
- 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,
- struct intel_gsc_mtl_header *header_in,
- struct intel_gsc_mtl_header *header_out,
- u64 addr_in, u64 addr_out,
- size_t msg_out_len)
-{
- struct intel_gt *gt = i915->media_gt;
- int ret;
-
- ret = intel_gsc_uc_heci_cmd_submit_packet(>->uc.gsc, addr_in,
- header_in->message_size,
- addr_out,
- msg_out_len + sizeof(*header_out));
- if (ret) {
- drm_err(&i915->drm, "failed to send gsc HDCP msg (%d)\n", ret);
- return ret;
- }
-
- /*
- * Checking validity marker and header status to see if some error has
- * blocked us from sending message to gsc cs
- */
- if (header_out->validity_marker != GSC_HECI_VALIDITY_MARKER) {
- drm_err(&i915->drm, "invalid validity marker\n");
- return -EINVAL;
- }
-
- if (header_out->status != 0) {
- drm_err(&i915->drm, "header status indicates error %d\n",
- header_out->status);
- return -EINVAL;
- }
-
- if (header_out->flags & GSC_OUTFLAG_MSG_PENDING) {
- header_in->gsc_message_handle = header_out->gsc_message_handle;
- return -EAGAIN;
- }
-
- return 0;
-}
-
-/*
- * 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_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 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);
- u64 addr_in, addr_out, host_session_id;
- u32 reply_size, msg_size_in, msg_size_out;
- int ret, tries = 0;
-
- if (!intel_uc_uses_gsc_uc(>->uc))
- return -ENODEV;
-
- if (msg_in_len > max_msg_size || msg_out_len > max_msg_size)
- return -ENOSPC;
-
- msg_size_in = msg_in_len + sizeof(*header_in);
- msg_size_out = msg_out_len + sizeof(*header_out);
- 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);
- memset(header_out, 0, msg_size_out);
- 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(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
- * message handle as we are using same address hence loc. of header is
- * same and it will contain the message handle. we will send the message
- * 20 times each message 50 ms apart
- */
- do {
- ret = intel_gsc_send_sync(i915, header_in, header_out, addr_in,
- addr_out, msg_out_len);
-
- /* Only try again if gsc says so */
- if (ret != -EAGAIN)
- break;
-
- msleep(50);
-
- } while (++tries < 20);
-
- if (ret)
- goto err;
-
- /* we use the same mem for the reply, so header is in the same loc */
- reply_size = header_out->message_size - sizeof(*header_out);
- if (reply_size > msg_out_len) {
- drm_warn(&i915->drm, "caller with insufficient HDCP reply size %u (%d)\n",
- reply_size, (u32)msg_out_len);
- reply_size = msg_out_len;
- } else if (reply_size != msg_out_len) {
- drm_dbg_kms(&i915->drm, "caller unexpected HCDP reply size %u (%d)\n",
- reply_size, (u32)msg_out_len);
- }
-
- memcpy(msg_out, gsc_context->hdcp_cmd_out + sizeof(*header_out), msg_out_len);
-
-err:
- return ret;
-}
--- /dev/null
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright 2023, Intel Corporation.
+ */
+
+#include <drm/drm_print.h>
+#include <drm/intel/i915_hdcp_interface.h>
+
+#include "display/intel_hdcp_gsc.h"
+#include "gem/i915_gem_region.h"
+#include "gt/intel_gt.h"
+#include "gt/uc/intel_gsc_uc_heci_cmd_submit.h"
+#include "i915_drv.h"
+
+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_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;
+
+ if (!gsc || !intel_uc_fw_is_running(&gsc->fw)) {
+ drm_dbg_kms(&i915->drm,
+ "GSC components required for HDCP2.2 are not ready\n");
+ return false;
+ }
+
+ return true;
+}
+
+/*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_context *gsc_context)
+{
+ struct intel_gt *gt = i915->media_gt;
+ struct drm_i915_gem_object *obj = NULL;
+ struct i915_vma *vma = NULL;
+ void *cmd_in, *cmd_out;
+ int err;
+
+ /* allocate object of two page for HDCP command memory and store it */
+ obj = i915_gem_object_create_shmem(i915, 2 * PAGE_SIZE);
+
+ if (IS_ERR(obj)) {
+ drm_err(&i915->drm, "Failed to allocate HDCP streaming command!\n");
+ return PTR_ERR(obj);
+ }
+
+ cmd_in = i915_gem_object_pin_map_unlocked(obj, intel_gt_coherent_map_type(gt, obj, true));
+ if (IS_ERR(cmd_in)) {
+ drm_err(&i915->drm, "Failed to map gsc message page!\n");
+ err = PTR_ERR(cmd_in);
+ goto out_unpin;
+ }
+
+ cmd_out = cmd_in + PAGE_SIZE;
+
+ vma = i915_vma_instance(obj, >->ggtt->vm, NULL);
+ if (IS_ERR(vma)) {
+ err = PTR_ERR(vma);
+ goto out_unmap;
+ }
+
+ err = i915_vma_pin(vma, 0, 0, PIN_GLOBAL | PIN_HIGH);
+ if (err)
+ goto out_unmap;
+
+ memset(cmd_in, 0, obj->base.size);
+
+ gsc_context->hdcp_cmd_in = cmd_in;
+ gsc_context->hdcp_cmd_out = cmd_out;
+ gsc_context->vma = vma;
+ gsc_context->i915 = i915;
+
+ return 0;
+
+out_unmap:
+ i915_gem_object_unpin_map(obj);
+out_unpin:
+ i915_gem_object_put(obj);
+ return err;
+}
+
+struct intel_hdcp_gsc_context *intel_hdcp_gsc_context_alloc(struct drm_device *drm)
+{
+ struct drm_i915_private *i915 = to_i915(drm);
+ struct intel_hdcp_gsc_context *gsc_context;
+ int ret;
+
+ 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
+ */
+ 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);
+ }
+
+ return gsc_context;
+}
+
+void intel_hdcp_gsc_context_free(struct intel_hdcp_gsc_context *gsc_context)
+{
+ if (!gsc_context)
+ return;
+
+ 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,
+ struct intel_gsc_mtl_header *header_in,
+ struct intel_gsc_mtl_header *header_out,
+ u64 addr_in, u64 addr_out,
+ size_t msg_out_len)
+{
+ struct intel_gt *gt = i915->media_gt;
+ int ret;
+
+ ret = intel_gsc_uc_heci_cmd_submit_packet(>->uc.gsc, addr_in,
+ header_in->message_size,
+ addr_out,
+ msg_out_len + sizeof(*header_out));
+ if (ret) {
+ drm_err(&i915->drm, "failed to send gsc HDCP msg (%d)\n", ret);
+ return ret;
+ }
+
+ /*
+ * Checking validity marker and header status to see if some error has
+ * blocked us from sending message to gsc cs
+ */
+ if (header_out->validity_marker != GSC_HECI_VALIDITY_MARKER) {
+ drm_err(&i915->drm, "invalid validity marker\n");
+ return -EINVAL;
+ }
+
+ if (header_out->status != 0) {
+ drm_err(&i915->drm, "header status indicates error %d\n",
+ header_out->status);
+ return -EINVAL;
+ }
+
+ if (header_out->flags & GSC_OUTFLAG_MSG_PENDING) {
+ header_in->gsc_message_handle = header_out->gsc_message_handle;
+ return -EAGAIN;
+ }
+
+ return 0;
+}
+
+/*
+ * 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_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 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);
+ u64 addr_in, addr_out, host_session_id;
+ u32 reply_size, msg_size_in, msg_size_out;
+ int ret, tries = 0;
+
+ if (!intel_uc_uses_gsc_uc(>->uc))
+ return -ENODEV;
+
+ if (msg_in_len > max_msg_size || msg_out_len > max_msg_size)
+ return -ENOSPC;
+
+ msg_size_in = msg_in_len + sizeof(*header_in);
+ msg_size_out = msg_out_len + sizeof(*header_out);
+ 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);
+ memset(header_out, 0, msg_size_out);
+ 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(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
+ * message handle as we are using same address hence loc. of header is
+ * same and it will contain the message handle. we will send the message
+ * 20 times each message 50 ms apart
+ */
+ do {
+ ret = intel_gsc_send_sync(i915, header_in, header_out, addr_in,
+ addr_out, msg_out_len);
+
+ /* Only try again if gsc says so */
+ if (ret != -EAGAIN)
+ break;
+
+ msleep(50);
+
+ } while (++tries < 20);
+
+ if (ret)
+ goto err;
+
+ /* we use the same mem for the reply, so header is in the same loc */
+ reply_size = header_out->message_size - sizeof(*header_out);
+ if (reply_size > msg_out_len) {
+ drm_warn(&i915->drm, "caller with insufficient HDCP reply size %u (%d)\n",
+ reply_size, (u32)msg_out_len);
+ reply_size = msg_out_len;
+ } else if (reply_size != msg_out_len) {
+ drm_dbg_kms(&i915->drm, "caller unexpected HCDP reply size %u (%d)\n",
+ reply_size, (u32)msg_out_len);
+ }
+
+ memcpy(msg_out, gsc_context->hdcp_cmd_out + sizeof(*header_out), msg_out_len);
+
+err:
+ return ret;
+}
projects / linux / commitdiff