drm/amdkfd: separate kfd_iommu_resume from kfd_resume

commit fefc01f042f44ede373ee66773b8238dd8fdcb55 upstream.

Separate kfd_iommu_resume from kfd_resume for fine-tuning
of amdgpu device init/resume/reset/recovery sequence.

v2: squash in fix for !CONFIG_HSA_AMD

Bug: https://bugzilla.kernel.org/show_bug.cgi?id=211277
Signed-off-by: James Zhu <James.Zhu@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
index a81d9cacf9b8fc31f324972904d1fa7ab49b0b80..8a402a3df4121e505d73601fd5c1000c83510973 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
@@ -305,6 +305,7 @@ bool kgd2kfd_device_init(struct kfd_dev *kfd,
                         const struct kgd2kfd_shared_resources *gpu_resources);
 void kgd2kfd_device_exit(struct kfd_dev *kfd);
 void kgd2kfd_suspend(struct kfd_dev *kfd, bool run_pm);
+int kgd2kfd_resume_iommu(struct kfd_dev *kfd);
 int kgd2kfd_resume(struct kfd_dev *kfd, bool run_pm);
 int kgd2kfd_pre_reset(struct kfd_dev *kfd);
 int kgd2kfd_post_reset(struct kfd_dev *kfd);
@@ -343,6 +344,11 @@ static inline void kgd2kfd_suspend(struct kfd_dev *kfd, bool run_pm)
 {
 }
 
+static int __maybe_unused kgd2kfd_resume_iommu(struct kfd_dev *kfd)
+{
+       return 0;
+}
+
 static inline int kgd2kfd_resume(struct kfd_dev *kfd, bool run_pm)
 {
        return 0;

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device.c b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
index 5751bddc9cadda9290574f3f957c67ead790aa47..1204dae85797ef4f12f1043c21ee82c208e1045e 100644 (file)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
@@ -896,17 +896,21 @@ int kgd2kfd_resume(struct kfd_dev *kfd, bool run_pm)
        return ret;
 }
 
-static int kfd_resume(struct kfd_dev *kfd)
+int kgd2kfd_resume_iommu(struct kfd_dev *kfd)
 {
        int err = 0;
 
        err = kfd_iommu_resume(kfd);
-       if (err) {
+       if (err)
                dev_err(kfd_device,
                        "Failed to resume IOMMU for device %x:%x\n",
                        kfd->pdev->vendor, kfd->pdev->device);
-               return err;
-       }
+       return err;
+}
+
+static int kfd_resume(struct kfd_dev *kfd)
+{
+       int err = 0;
 
        err = kfd->dqm->ops.start(kfd->dqm);
        if (err) {