From 2606f291621eb319726243e0f3893644114277f8 Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Wed, 13 Jun 2018 16:25:53 +1000 Subject: drm/nouveau/mmu: support initialisation of client-managed address-spaces NVKM is currently responsible for managing the allocation of a client's GPU address-space, but there's various use-cases (ie. HMM address-space mirroring) where giving a client more direct control is desirable. This commit allows for a VMM to be created where the area allocated for NVKM is limited to a client-specified window, the remainder of address- space is controlled directly by the client. Leaving a window is necessary to support various internal requirements, but also to support existing allocation interfaces as not all of the HW is capable of working with a HMM allocation. Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nvif/vmm.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'drivers/gpu/drm/nouveau/nvif') diff --git a/drivers/gpu/drm/nouveau/nvif/vmm.c b/drivers/gpu/drm/nouveau/nvif/vmm.c index 6b9c5776547f..11487c00b909 100644 --- a/drivers/gpu/drm/nouveau/nvif/vmm.c +++ b/drivers/gpu/drm/nouveau/nvif/vmm.c @@ -112,8 +112,8 @@ nvif_vmm_fini(struct nvif_vmm *vmm) } int -nvif_vmm_init(struct nvif_mmu *mmu, s32 oclass, u64 addr, u64 size, - void *argv, u32 argc, struct nvif_vmm *vmm) +nvif_vmm_init(struct nvif_mmu *mmu, s32 oclass, bool managed, u64 addr, + u64 size, void *argv, u32 argc, struct nvif_vmm *vmm) { struct nvif_vmm_v0 *args; u32 argn = sizeof(*args) + argc; @@ -125,6 +125,7 @@ nvif_vmm_init(struct nvif_mmu *mmu, s32 oclass, u64 addr, u64 size, if (!(args = kmalloc(argn, GFP_KERNEL))) return -ENOMEM; args->version = 0; + args->managed = managed; args->addr = addr; args->size = size; memcpy(args->data, argv, argc); -- cgit