diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/subdev/vm/nvc0.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/vm/nvc0.c | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/vm/nvc0.c b/drivers/gpu/drm/nouveau/core/subdev/vm/nvc0.c new file mode 100644 index 00000000000..30c61e6c201 --- /dev/null +++ b/drivers/gpu/drm/nouveau/core/subdev/vm/nvc0.c @@ -0,0 +1,189 @@ +/* + * 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 <core/device.h> +#include <core/gpuobj.h> + +#include <subdev/timer.h> +#include <subdev/fb.h> +#include <subdev/vm.h> + +struct nvc0_vmmgr_priv { + struct nouveau_vmmgr base; + spinlock_t lock; +}; + +static void +nvc0_vm_map_pgt(struct nouveau_gpuobj *pgd, u32 index, + struct nouveau_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 +nvc0_vm_addr(struct nouveau_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 +nvc0_vm_map(struct nouveau_vma *vma, struct nouveau_gpuobj *pgt, + struct nouveau_mem *mem, u32 pte, u32 cnt, u64 phys, u64 delta) +{ + u32 next = 1 << (vma->node->type - 8); + + phys = nvc0_vm_addr(vma, phys, mem->memtype, 0); + pte <<= 3; + 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 +nvc0_vm_map_sg(struct nouveau_vma *vma, struct nouveau_gpuobj *pgt, + struct nouveau_mem *mem, u32 pte, u32 cnt, dma_addr_t *list) +{ + u32 target = (vma->access & NV_MEM_ACCESS_NOSNOOP) ? 7 : 5; + + pte <<= 3; + while (cnt--) { + u64 phys = nvc0_vm_addr(vma, *list++, mem->memtype, target); + nv_wo32(pgt, pte + 0, lower_32_bits(phys)); + nv_wo32(pgt, pte + 4, upper_32_bits(phys)); + pte += 8; + } +} + +static void +nvc0_vm_unmap(struct nouveau_gpuobj *pgt, u32 pte, u32 cnt) +{ + pte <<= 3; + while (cnt--) { + nv_wo32(pgt, pte + 0, 0x00000000); + nv_wo32(pgt, pte + 4, 0x00000000); + pte += 8; + } +} + +void +nvc0_vm_flush_engine(struct nouveau_subdev *subdev, u64 addr, int type) +{ + struct nvc0_vmmgr_priv *priv = (void *)nouveau_vmmgr(subdev); + unsigned long flags; + + /* looks like maybe a "free flush slots" counter, the + * faster you write to 0x100cbc to more it decreases + */ + spin_lock_irqsave(&priv->lock, flags); + if (!nv_wait_ne(subdev, 0x100c80, 0x00ff0000, 0x00000000)) { + nv_error(subdev, "vm timeout 0: 0x%08x %d\n", + nv_rd32(subdev, 0x100c80), type); + } + + nv_wr32(subdev, 0x100cb8, addr >> 8); + nv_wr32(subdev, 0x100cbc, 0x80000000 | type); + + /* wait for flush to be queued? */ + if (!nv_wait(subdev, 0x100c80, 0x00008000, 0x00008000)) { + nv_error(subdev, "vm timeout 1: 0x%08x %d\n", + nv_rd32(subdev, 0x100c80), type); + } + spin_unlock_irqrestore(&priv->lock, flags); +} + +static void +nvc0_vm_flush(struct nouveau_vm *vm) +{ + struct nouveau_vm_pgd *vpgd; + + list_for_each_entry(vpgd, &vm->pgd_list, head) { + nvc0_vm_flush_engine(nv_subdev(vm->vmm), vpgd->obj->addr, 1); + } +} + +static int +nvc0_vm_create(struct nouveau_vmmgr *vmm, u64 offset, u64 length, + u64 mm_offset, struct nouveau_vm **pvm) +{ + return nouveau_vm_create(vmm, offset, length, mm_offset, 4096, pvm); +} + +static int +nvc0_vmmgr_ctor(struct nouveau_object *parent, struct nouveau_object *engine, + struct nouveau_oclass *oclass, void *data, u32 size, + struct nouveau_object **pobject) +{ + struct nvc0_vmmgr_priv *priv; + int ret; + + ret = nouveau_vmmgr_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 = nvc0_vm_create; + priv->base.map_pgt = nvc0_vm_map_pgt; + priv->base.map = nvc0_vm_map; + priv->base.map_sg = nvc0_vm_map_sg; + priv->base.unmap = nvc0_vm_unmap; + priv->base.flush = nvc0_vm_flush; + spin_lock_init(&priv->lock); + return 0; +} + +struct nouveau_oclass +nvc0_vmmgr_oclass = { + .handle = NV_SUBDEV(VM, 0xc0), + .ofuncs = &(struct nouveau_ofuncs) { + .ctor = nvc0_vmmgr_ctor, + .dtor = _nouveau_vmmgr_dtor, + .init = _nouveau_vmmgr_init, + .fini = _nouveau_vmmgr_fini, + }, +}; |