diff options
Diffstat (limited to 'meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/1307-drm-amdkfd-Support-registering-third-pary-device-mem.patch')
| -rw-r--r-- | meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/1307-drm-amdkfd-Support-registering-third-pary-device-mem.patch | 72 |
1 files changed, 0 insertions, 72 deletions
diff --git a/meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/1307-drm-amdkfd-Support-registering-third-pary-device-mem.patch b/meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/1307-drm-amdkfd-Support-registering-third-pary-device-mem.patch deleted file mode 100644 index b832cab1..00000000 --- a/meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/1307-drm-amdkfd-Support-registering-third-pary-device-mem.patch +++ /dev/null @@ -1,72 +0,0 @@ -From 450c0b97336d03d484ec12cb45dcdd37f3fbcb5f Mon Sep 17 00:00:00 2001 -From: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com> -Date: Thu, 13 Jul 2017 12:00:20 -0400 -Subject: [PATCH 1307/4131] drm/amdkfd: Support registering third pary device - memory - -Register userptr that corresponds to third party device memory for GPU -access. Instead of userptr BO a doorbell BO will be created using the -physical address of the third party device memory. User space will treat -the doorbell BO as a regular userptr BO - -BUG: KFD-351 -Change-Id: I7ff5ded4ab0a90e01f984c1e0dc8067f09a35baa -Signed-off-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com> ---- - drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 26 +++++++++++++++++++++----- - 1 file changed, 21 insertions(+), 5 deletions(-) - -diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c -index 814ad7f..c254b52 100644 ---- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c -+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c -@@ -1194,7 +1194,9 @@ static int kfd_ioctl_alloc_memory_of_gpu(struct file *filep, - struct kfd_dev *dev; - int idr_handle; - long err; -- uint64_t offset; -+ uint64_t offset = args->mmap_offset; -+ uint32_t flags = args->flags; -+ struct vm_area_struct *vma; - - if (args->size == 0) - return -EINVAL; -@@ -1209,17 +1211,31 @@ static int kfd_ioctl_alloc_memory_of_gpu(struct file *filep, - if (IS_ERR(pdd)) - return PTR_ERR(pdd); - -- if (args->flags & KFD_IOC_ALLOC_MEM_FLAGS_DOORBELL) { -+ if (flags & KFD_IOC_ALLOC_MEM_FLAGS_USERPTR) { -+ /* Check if the userptr corresponds to another (or third-party) -+ * device local memory. If so treat is as a doorbell. User -+ * space will be oblivious of this and will use this doorbell -+ * BO as a regular userptr BO -+ */ -+ vma = find_vma(current->mm, args->mmap_offset); -+ if (vma && (vma->vm_flags & VM_IO)) { -+ unsigned long pfn; -+ -+ follow_pfn(vma, args->mmap_offset, &pfn); -+ flags |= KFD_IOC_ALLOC_MEM_FLAGS_DOORBELL; -+ flags &= ~KFD_IOC_ALLOC_MEM_FLAGS_USERPTR; -+ offset = (pfn << PAGE_SHIFT); -+ } -+ } else if (flags & KFD_IOC_ALLOC_MEM_FLAGS_DOORBELL) { - if (args->size != kfd_doorbell_process_slice(dev)) - return -EINVAL; - offset = kfd_get_process_doorbells(dev, p); -- } else -- offset = args->mmap_offset; -+ } - - err = dev->kfd2kgd->alloc_memory_of_gpu( - dev->kgd, args->va_addr, args->size, - pdd->vm, (struct kgd_mem **) &mem, &offset, -- NULL, args->flags); -+ NULL, flags); - - if (err != 0) - return err; --- -2.7.4 - |