From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- .../gpu/drm/nouveau/nvkm/subdev/mmu/gf100.c | 237 +++++++++++++++++++++ 1 file changed, 237 insertions(+) create mode 100644 kernel/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/gf100.c (limited to 'kernel/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/gf100.c') diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/gf100.c b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/gf100.c new file mode 100644 index 000000000..294cda37f --- /dev/null +++ b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/gf100.c @@ -0,0 +1,237 @@ +/* + * Copyright 2010 Red Hat Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: Ben Skeggs + */ +#include +#include +#include +#include +#include + +#include + +struct gf100_mmu_priv { + struct nvkm_mmu base; +}; + + +/* Map from compressed to corresponding uncompressed storage type. + * The value 0xff represents an invalid storage type. + */ +const u8 gf100_pte_storage_type_map[256] = +{ + 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0xff, 0x01, /* 0x00 */ + 0x01, 0x01, 0x01, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0x11, 0xff, 0xff, 0xff, 0xff, 0xff, 0x11, /* 0x10 */ + 0x11, 0x11, 0x11, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x26, 0x27, /* 0x20 */ + 0x28, 0x29, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x30 */ + 0xff, 0xff, 0x26, 0x27, 0x28, 0x29, 0x26, 0x27, + 0x28, 0x29, 0xff, 0xff, 0xff, 0xff, 0x46, 0xff, /* 0x40 */ + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0x46, 0x46, 0x46, 0x46, 0xff, 0xff, 0xff, /* 0x50 */ + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x60 */ + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x70 */ + 0xff, 0xff, 0xff, 0x7b, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7b, 0x7b, /* 0x80 */ + 0x7b, 0x7b, 0xff, 0x8b, 0x8c, 0x8d, 0x8e, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x90 */ + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0x8b, 0x8c, 0x8d, 0x8e, 0xa7, /* 0xa0 */ + 0xa8, 0xa9, 0xaa, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0xb0 */ + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xa7, + 0xa8, 0xa9, 0xaa, 0xc3, 0xff, 0xff, 0xff, 0xff, /* 0xc0 */ + 0xff, 0xff, 0xff, 0xff, 0xfe, 0xfe, 0xc3, 0xc3, + 0xc3, 0xc3, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0xd0 */ + 0xfe, 0xff, 0xff, 0xfe, 0xff, 0xfe, 0xff, 0xfe, + 0xfe, 0xff, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xff, /* 0xe0 */ + 0xff, 0xfe, 0xff, 0xfe, 0xff, 0xfe, 0xfe, 0xff, + 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, /* 0xf0 */ + 0xfe, 0xfe, 0xfe, 0xfe, 0xff, 0xfd, 0xfe, 0xff +}; + + +static void +gf100_vm_map_pgt(struct nvkm_gpuobj *pgd, u32 index, struct nvkm_gpuobj *pgt[2]) +{ + u32 pde[2] = { 0, 0 }; + + if (pgt[0]) + pde[1] = 0x00000001 | (pgt[0]->addr >> 8); + if (pgt[1]) + pde[0] = 0x00000001 | (pgt[1]->addr >> 8); + + nv_wo32(pgd, (index * 8) + 0, pde[0]); + nv_wo32(pgd, (index * 8) + 4, pde[1]); +} + +static inline u64 +gf100_vm_addr(struct nvkm_vma *vma, u64 phys, u32 memtype, u32 target) +{ + phys >>= 8; + + phys |= 0x00000001; /* present */ + if (vma->access & NV_MEM_ACCESS_SYS) + phys |= 0x00000002; + + phys |= ((u64)target << 32); + phys |= ((u64)memtype << 36); + return phys; +} + +static void +gf100_vm_map(struct nvkm_vma *vma, struct nvkm_gpuobj *pgt, + struct nvkm_mem *mem, u32 pte, u32 cnt, u64 phys, u64 delta) +{ + u64 next = 1 << (vma->node->type - 8); + + phys = gf100_vm_addr(vma, phys, mem->memtype, 0); + pte <<= 3; + + if (mem->tag) { + struct nvkm_ltc *ltc = nvkm_ltc(vma->vm->mmu); + u32 tag = mem->tag->offset + (delta >> 17); + phys |= (u64)tag << (32 + 12); + next |= (u64)1 << (32 + 12); + ltc->tags_clear(ltc, tag, cnt); + } + + while (cnt--) { + nv_wo32(pgt, pte + 0, lower_32_bits(phys)); + nv_wo32(pgt, pte + 4, upper_32_bits(phys)); + phys += next; + pte += 8; + } +} + +static void +gf100_vm_map_sg(struct nvkm_vma *vma, struct nvkm_gpuobj *pgt, + struct nvkm_mem *mem, u32 pte, u32 cnt, dma_addr_t *list) +{ + u32 target = (vma->access & NV_MEM_ACCESS_NOSNOOP) ? 7 : 5; + /* compressed storage types are invalid for system memory */ + u32 memtype = gf100_pte_storage_type_map[mem->memtype & 0xff]; + + pte <<= 3; + while (cnt--) { + u64 phys = gf100_vm_addr(vma, *list++, memtype, target); + nv_wo32(pgt, pte + 0, lower_32_bits(phys)); + nv_wo32(pgt, pte + 4, upper_32_bits(phys)); + pte += 8; + } +} + +static void +gf100_vm_unmap(struct nvkm_gpuobj *pgt, u32 pte, u32 cnt) +{ + pte <<= 3; + while (cnt--) { + nv_wo32(pgt, pte + 0, 0x00000000); + nv_wo32(pgt, pte + 4, 0x00000000); + pte += 8; + } +} + +static void +gf100_vm_flush(struct nvkm_vm *vm) +{ + struct gf100_mmu_priv *priv = (void *)vm->mmu; + struct nvkm_bar *bar = nvkm_bar(priv); + struct nvkm_vm_pgd *vpgd; + u32 type; + + bar->flush(bar); + + type = 0x00000001; /* PAGE_ALL */ + if (atomic_read(&vm->engref[NVDEV_SUBDEV_BAR])) + type |= 0x00000004; /* HUB_ONLY */ + + mutex_lock(&nv_subdev(priv)->mutex); + list_for_each_entry(vpgd, &vm->pgd_list, head) { + /* looks like maybe a "free flush slots" counter, the + * faster you write to 0x100cbc to more it decreases + */ + if (!nv_wait_ne(priv, 0x100c80, 0x00ff0000, 0x00000000)) { + nv_error(priv, "vm timeout 0: 0x%08x %d\n", + nv_rd32(priv, 0x100c80), type); + } + + nv_wr32(priv, 0x100cb8, vpgd->obj->addr >> 8); + nv_wr32(priv, 0x100cbc, 0x80000000 | type); + + /* wait for flush to be queued? */ + if (!nv_wait(priv, 0x100c80, 0x00008000, 0x00008000)) { + nv_error(priv, "vm timeout 1: 0x%08x %d\n", + nv_rd32(priv, 0x100c80), type); + } + } + mutex_unlock(&nv_subdev(priv)->mutex); +} + +static int +gf100_vm_create(struct nvkm_mmu *mmu, u64 offset, u64 length, u64 mm_offset, + struct nvkm_vm **pvm) +{ + return nvkm_vm_create(mmu, offset, length, mm_offset, 4096, pvm); +} + +static int +gf100_mmu_ctor(struct nvkm_object *parent, struct nvkm_object *engine, + struct nvkm_oclass *oclass, void *data, u32 size, + struct nvkm_object **pobject) +{ + struct gf100_mmu_priv *priv; + int ret; + + ret = nvkm_mmu_create(parent, engine, oclass, "VM", "vm", &priv); + *pobject = nv_object(priv); + if (ret) + return ret; + + priv->base.limit = 1ULL << 40; + priv->base.dma_bits = 40; + priv->base.pgt_bits = 27 - 12; + priv->base.spg_shift = 12; + priv->base.lpg_shift = 17; + priv->base.create = gf100_vm_create; + priv->base.map_pgt = gf100_vm_map_pgt; + priv->base.map = gf100_vm_map; + priv->base.map_sg = gf100_vm_map_sg; + priv->base.unmap = gf100_vm_unmap; + priv->base.flush = gf100_vm_flush; + return 0; +} + +struct nvkm_oclass +gf100_mmu_oclass = { + .handle = NV_SUBDEV(MMU, 0xc0), + .ofuncs = &(struct nvkm_ofuncs) { + .ctor = gf100_mmu_ctor, + .dtor = _nvkm_mmu_dtor, + .init = _nvkm_mmu_init, + .fini = _nvkm_mmu_fini, + }, +}; -- cgit 1.2.3-korg