#include <drm/i915_pxp_tee_interface.h>
#include <drm/i915_component.h>
+#include "gem/i915_gem_lmem.h"
+
#include "i915_drv.h"
#include "intel_pxp.h"
#include "intel_pxp_session.h"
#include "intel_pxp_tee.h"
#include "intel_pxp_tee_interface.h"
+#include "intel_pxp_huc.h"
static inline struct intel_pxp *i915_dev_to_pxp(struct device *i915_kdev)
{
return ret;
}
+int intel_pxp_tee_stream_message(struct intel_pxp *pxp,
+ u8 client_id, u32 fence_id,
+ void *msg_in, size_t msg_in_len,
+ void *msg_out, size_t msg_out_len)
+{
+ /* TODO: for bigger objects we need to use a sg of 4k pages */
+ const size_t max_msg_size = PAGE_SIZE;
+ struct drm_i915_private *i915 = pxp_to_gt(pxp)->i915;
+ struct i915_pxp_component *pxp_component = pxp->pxp_component;
+ unsigned int offset = 0;
+ struct scatterlist *sg;
+ int ret;
+
+ if (msg_in_len > max_msg_size || msg_out_len > max_msg_size)
+ return -ENOSPC;
+
+ mutex_lock(&pxp->tee_mutex);
+
+ if (unlikely(!pxp_component || !pxp_component->ops->gsc_command)) {
+ ret = -ENODEV;
+ goto unlock;
+ }
+
+ GEM_BUG_ON(!pxp->stream_cmd.obj);
+
+ sg = i915_gem_object_get_sg_dma(pxp->stream_cmd.obj, 0, &offset);
+
+ memcpy(pxp->stream_cmd.vaddr, msg_in, msg_in_len);
+
+ ret = pxp_component->ops->gsc_command(pxp_component->tee_dev, client_id,
+ fence_id, sg, msg_in_len, sg);
+ if (ret < 0)
+ drm_err(&i915->drm, "Failed to send PXP TEE gsc command\n");
+ else
+ memcpy(msg_out, pxp->stream_cmd.vaddr, msg_out_len);
+
+unlock:
+ mutex_unlock(&pxp->tee_mutex);
+ return ret;
+}
+
/**
* i915_pxp_tee_component_bind - bind function to pass the function pointers to pxp_tee
* @i915_kdev: pointer to i915 kernel device
{
struct drm_i915_private *i915 = kdev_to_i915(i915_kdev);
struct intel_pxp *pxp = i915_dev_to_pxp(i915_kdev);
+ struct intel_uc *uc = &pxp_to_gt(pxp)->uc;
intel_wakeref_t wakeref;
+ int ret = 0;
mutex_lock(&pxp->tee_mutex);
pxp->pxp_component = data;
pxp->pxp_component->tee_dev = tee_kdev;
mutex_unlock(&pxp->tee_mutex);
+ if (intel_uc_uses_huc(uc) && intel_huc_is_loaded_by_gsc(&uc->huc)) {
+ with_intel_runtime_pm(&i915->runtime_pm, wakeref) {
+ /* load huc via pxp */
+ ret = intel_huc_fw_load_and_auth_via_gsc(&uc->huc);
+ if (ret < 0)
+ drm_err(&i915->drm, "failed to load huc via gsc %d\n", ret);
+ }
+ }
+
/* if we are suspended, the HW will be re-initialized on resume */
wakeref = intel_runtime_pm_get_if_in_use(&i915->runtime_pm);
if (!wakeref)
return 0;
/* the component is required to fully start the PXP HW */
- intel_pxp_init_hw(pxp);
+ if (intel_pxp_is_enabled(pxp))
+ intel_pxp_init_hw(pxp);
intel_runtime_pm_put(&i915->runtime_pm, wakeref);
- return 0;
+ return ret;
}
static void i915_pxp_tee_component_unbind(struct device *i915_kdev,
struct intel_pxp *pxp = i915_dev_to_pxp(i915_kdev);
intel_wakeref_t wakeref;
- with_intel_runtime_pm_if_in_use(&i915->runtime_pm, wakeref)
- intel_pxp_fini_hw(pxp);
+ if (intel_pxp_is_enabled(pxp))
+ with_intel_runtime_pm_if_in_use(&i915->runtime_pm, wakeref)
+ intel_pxp_fini_hw(pxp);
mutex_lock(&pxp->tee_mutex);
pxp->pxp_component = NULL;
.unbind = i915_pxp_tee_component_unbind,
};
+static int alloc_streaming_command(struct intel_pxp *pxp)
+{
+ struct drm_i915_private *i915 = pxp_to_gt(pxp)->i915;
+ struct drm_i915_gem_object *obj = NULL;
+ void *cmd;
+ int err;
+
+ pxp->stream_cmd.obj = NULL;
+ pxp->stream_cmd.vaddr = NULL;
+
+ if (!IS_DGFX(i915))
+ return 0;
+
+ /* allocate lmem object of one page for PXP command memory and store it */
+ obj = i915_gem_object_create_lmem(i915, PAGE_SIZE, I915_BO_ALLOC_CONTIGUOUS);
+ if (IS_ERR(obj)) {
+ drm_err(&i915->drm, "Failed to allocate pxp streaming command!\n");
+ return PTR_ERR(obj);
+ }
+
+ err = i915_gem_object_pin_pages_unlocked(obj);
+ if (err) {
+ drm_err(&i915->drm, "Failed to pin gsc message page!\n");
+ goto out_put;
+ }
+
+ /* map the lmem into the virtual memory pointer */
+ cmd = i915_gem_object_pin_map_unlocked(obj, i915_coherent_map_type(i915, obj, true));
+ if (IS_ERR(cmd)) {
+ drm_err(&i915->drm, "Failed to map gsc message page!\n");
+ err = PTR_ERR(cmd);
+ goto out_unpin;
+ }
+
+ memset(cmd, 0, obj->base.size);
+
+ pxp->stream_cmd.obj = obj;
+ pxp->stream_cmd.vaddr = cmd;
+
+ return 0;
+
+out_unpin:
+ i915_gem_object_unpin_pages(obj);
+out_put:
+ i915_gem_object_put(obj);
+ return err;
+}
+
+static void free_streaming_command(struct intel_pxp *pxp)
+{
+ struct drm_i915_gem_object *obj = fetch_and_zero(&pxp->stream_cmd.obj);
+
+ if (!obj)
+ return;
+
+ i915_gem_object_unpin_map(obj);
+ i915_gem_object_unpin_pages(obj);
+ i915_gem_object_put(obj);
+}
+
int intel_pxp_tee_component_init(struct intel_pxp *pxp)
{
int ret;
struct intel_gt *gt = pxp_to_gt(pxp);
struct drm_i915_private *i915 = gt->i915;
+ mutex_init(&pxp->tee_mutex);
+
+ ret = alloc_streaming_command(pxp);
+ if (ret)
+ return ret;
+
ret = component_add_typed(i915->drm.dev, &i915_pxp_tee_component_ops,
I915_COMPONENT_PXP);
if (ret < 0) {
drm_err(&i915->drm, "Failed to add PXP component (%d)\n", ret);
- return ret;
+ goto out_free;
}
pxp->pxp_component_added = true;
return 0;
+
+out_free:
+ free_streaming_command(pxp);
+ return ret;
}
void intel_pxp_tee_component_fini(struct intel_pxp *pxp)
component_del(i915->drm.dev, &i915_pxp_tee_component_ops);
pxp->pxp_component_added = false;
+
+ free_streaming_command(pxp);
}
int intel_pxp_tee_cmd_create_arb_session(struct intel_pxp *pxp,
git.samba.org / sfrench / cifs-2.6.git / blobdiff