/* * Copyright 2012 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/object.h> #include <core/client.h> #include <core/device.h> #include <core/class.h> #include <subdev/fb.h> #include <subdev/vm.h> #include <subdev/instmem.h> #include <engine/software.h> #include "nouveau_drm.h" #include "nouveau_dma.h" #include "nouveau_bo.h" #include "nouveau_chan.h" #include "nouveau_fence.h" #include "nouveau_abi16.h" MODULE_PARM_DESC(vram_pushbuf, "Create DMA push buffers in VRAM"); static int nouveau_vram_pushbuf; module_param_named(vram_pushbuf, nouveau_vram_pushbuf, int, 0400); int nouveau_channel_idle(struct nouveau_channel *chan) { struct nouveau_cli *cli = chan->cli; struct nouveau_fence *fence = NULL; int ret; ret = nouveau_fence_new(chan, false, &fence); if (!ret) { ret = nouveau_fence_wait(fence, false, false); nouveau_fence_unref(&fence); } if (ret) NV_ERROR(cli, "failed to idle channel 0x%08x [%s]\n", chan->handle, cli->base.name); return ret; } void nouveau_channel_del(struct nouveau_channel **pchan) { struct nouveau_channel *chan = *pchan; if (chan) { struct nouveau_object *client = nv_object(chan->cli); if (chan->fence) { nouveau_channel_idle(chan); nouveau_fence(chan->drm)->context_del(chan); } nouveau_object_del(client, NVDRM_DEVICE, chan->handle); nouveau_object_del(client, NVDRM_DEVICE, chan->push.handle); nouveau_bo_vma_del(chan->push.buffer, &chan->push.vma); nouveau_bo_unmap(chan->push.buffer); if (chan->push.buffer && chan->push.buffer->pin_refcnt) nouveau_bo_unpin(chan->push.buffer); nouveau_bo_ref(NULL, &chan->push.buffer); kfree(chan); } *pchan = NULL; } static int nouveau_channel_prep(struct nouveau_drm *drm, struct nouveau_cli *cli, u32 parent, u32 handle, u32 size, struct nouveau_channel **pchan) { struct nouveau_device *device = nv_device(drm->device); struct nouveau_instmem *imem = nouveau_instmem(device); struct nouveau_vmmgr *vmm = nouveau_vmmgr(device); struct nouveau_fb *pfb = nouveau_fb(device); struct nouveau_client *client = &cli->base; struct nv_dma_class args = {}; struct nouveau_channel *chan; struct nouveau_object *push; u32 target; int ret; chan = *pchan = kzalloc(sizeof(*chan), GFP_KERNEL); if (!chan) return -ENOMEM; chan->cli = cli; chan->drm = drm; chan->handle = handle; /* allocate memory for dma push buffer */ target = TTM_PL_FLAG_TT; if (nouveau_vram_pushbuf) target = TTM_PL_FLAG_VRAM; ret = nouveau_bo_new(drm->dev, size, 0, target, 0, 0, NULL, &chan->push.buffer); if (ret == 0) { ret = nouveau_bo_pin(chan->push.buffer, target); if (ret == 0) ret = nouveau_bo_map(chan->push.buffer); } if (ret) { nouveau_channel_del(pchan); return ret; } /* create dma object covering the *entire* memory space that the * pushbuf lives in, this is because the GEM code requires that * we be able to call out to other (indirect) push buffers */ chan->push.vma.offset = chan->push.buffer->bo.offset; chan->push.handle = NVDRM_PUSH | (handle & 0xffff); if (device->card_type >= NV_50) { ret = nouveau_bo_vma_add(chan->push.buffer, client->vm, &chan->push.vma); if (ret) { nouveau_channel_del(pchan); return ret; } args.flags = NV_DMA_TARGET_VM | NV_DMA_ACCESS_VM; args.start = 0; args.limit = client->vm->vmm->limit - 1; } else if (chan->push.buffer->bo.mem.mem_type == TTM_PL_VRAM) { u64 limit = pfb->ram->size - imem->reserved - 1; if (device->card_type == NV_04) { /* nv04 vram pushbuf hack, retarget to its location in * the framebuffer bar rather than direct vram access.. * nfi why this exists, it came from the -nv ddx. */ args.flags = NV_DMA_TARGET_PCI | NV_DMA_ACCESS_RDWR; args.start = pci_resource_start(device->pdev, 1); args.limit = args.start + limit; } else { args.flags = NV_DMA_TARGET_VRAM | NV_DMA_ACCESS_RDWR; args.start = 0; args.limit = limit; } } else { if (chan->drm->agp.stat == ENABLED) { args.flags = NV_DMA_TARGET_AGP | NV_DMA_ACCESS_RDWR; args.start = chan->drm->agp.base; args.limit = chan->drm->agp.base + chan->drm->agp.size - 1; } else { args.flags = NV_DMA_TARGET_VM | NV_DMA_ACCESS_RDWR; args.start = 0; args.limit = vmm->limit - 1; } } ret = nouveau_object_new(nv_object(chan->cli), parent, chan->push.handle, 0x0002, &args, sizeof(args), &push); if (ret) { nouveau_channel_del(pchan); return ret; } return 0; } static int nouveau_channel_ind(struct nouveau_drm *drm, struct nouveau_cli *cli, u32 parent, u32 handle, u32 engine, struct nouveau_channel **pchan) { static const u16 oclasses[] = { NVE0_CHANNEL_IND_CLASS, NVC0_CHANNEL_IND_CLASS, NV84_CHANNEL_IND_CLASS, NV50_CHANNEL_IND_CLASS, 0 }; const u16 *oclass = oclasses; struct nve0_channel_ind_class args; struct nouveau_channel *chan; int ret; /* allocate dma push buffer */ ret = nouveau_channel_prep(drm, cli, parent, handle, 0x12000, &chan); *pchan = chan; if (ret) return ret; /* create channel object */ args.pushbuf = chan->push.handle; args.ioffset = 0x10000 + chan->push.vma.offset; args.ilength = 0x02000; args.engine = engine; do { ret = nouveau_object_new(nv_object(cli), parent, handle, *oclass++, &args, sizeof(args), &chan->object); if (ret == 0) return ret; } while (*oclass); nouveau_channel_del(pchan); return ret; } static int nouveau_channel_dma(struct nouveau_drm *drm, struct nouveau_cli *cli, u32 parent, u32 handle, struct nouveau_channel **pchan) { static const u16 oclasses[] = { NV40_CHANNEL_DMA_CLASS, NV17_CHANNEL_DMA_CLASS, NV10_CHANNEL_DMA_CLASS, NV03_CHANNEL_DMA_CLASS, 0 }; const u16 *oclass = oclasses; struct nv03_channel_dma_class args; struct nouveau_channel *chan; int ret; /* allocate dma push buffer */ ret = nouveau_channel_prep(drm, cli, parent, handle, 0x10000, &chan); *pchan = chan; if (ret) return ret; /* create channel object */ args.pushbuf = chan->push.handle; args.offset = chan->push.vma.offset; do { ret = nouveau_object_new(nv_object(cli), parent, handle, *oclass++, &args, sizeof(args), &chan->object); if (ret == 0) return ret; } while (ret && *oclass); nouveau_channel_del(pchan); return ret; } static int nouveau_channel_init(struct nouveau_channel *chan, u32 vram, u32 gart) { struct nouveau_client *client = nv_client(chan->cli); struct nouveau_device *device = nv_device(chan->drm->device); struct nouveau_instmem *imem = nouveau_instmem(device); struct nouveau_vmmgr *vmm = nouveau_vmmgr(device); struct nouveau_fb *pfb = nouveau_fb(device); struct nouveau_software_chan *swch; struct nouveau_object *object; struct nv_dma_class args = {}; int ret, i; /* allocate dma objects to cover all allowed vram, and gart */ if (device->card_type < NV_C0) { if (device->card_type >= NV_50) { args.flags = NV_DMA_TARGET_VM | NV_DMA_ACCESS_VM; args.start = 0; args.limit = client->vm->vmm->limit - 1; } else { args.flags = NV_DMA_TARGET_VRAM | NV_DMA_ACCESS_RDWR; args.start = 0; args.limit = pfb->ram->size - imem->reserved - 1; } ret = nouveau_object_new(nv_object(client), chan->handle, vram, 0x003d, &args, sizeof(args), &object); if (ret) return ret; if (device->card_type >= NV_50) { args.flags = NV_DMA_TARGET_VM | NV_DMA_ACCESS_VM; args.start = 0; args.limit = client->vm->vmm->limit - 1; } else if (chan->drm->agp.stat == ENABLED) { args.flags = NV_DMA_TARGET_AGP | NV_DMA_ACCESS_RDWR; args.start = chan->drm->agp.base; args.limit = chan->drm->agp.base + chan->drm->agp.size - 1; } else { args.flags = NV_DMA_TARGET_VM | NV_DMA_ACCESS_RDWR; args.start = 0; args.limit = vmm->limit - 1; } ret = nouveau_object_new(nv_object(client), chan->handle, gart, 0x003d, &args, sizeof(args), &object); if (ret) return ret; chan->vram = vram; chan->gart = gart; } /* initialise dma tracking parameters */ switch (nv_hclass(chan->object) & 0x00ff) { case 0x006b: case 0x006e: chan->user_put = 0x40; chan->user_get = 0x44; chan->dma.max = (0x10000 / 4) - 2; break; default: chan->user_put = 0x40; chan->user_get = 0x44; chan->user_get_hi = 0x60; chan->dma.ib_base = 0x10000 / 4; chan->dma.ib_max = (0x02000 / 8) - 1; chan->dma.ib_put = 0; chan->dma.ib_free = chan->dma.ib_max - chan->dma.ib_put; chan->dma.max = chan->dma.ib_base; break; } chan->dma.put = 0; chan->dma.cur = chan->dma.put; chan->dma.free = chan->dma.max - chan->dma.cur; ret = RING_SPACE(chan, NOUVEAU_DMA_SKIPS); if (ret) return ret; for (i = 0; i < NOUVEAU_DMA_SKIPS; i++) OUT_RING(chan, 0x00000000); /* allocate software object class (used for fences on <= nv05) */ if (device->card_type < NV_10) { ret = nouveau_object_new(nv_object(client), chan->handle, NvSw, 0x006e, NULL, 0, &object); if (ret) return ret; swch = (void *)object->parent; swch->flip = nouveau_flip_complete; swch->flip_data = chan; ret = RING_SPACE(chan, 2); if (ret) return ret; BEGIN_NV04(chan, NvSubSw, 0x0000, 1); OUT_RING (chan, NvSw); FIRE_RING (chan); } /* initialise synchronisation */ return nouveau_fence(chan->drm)->context_new(chan); } int nouveau_channel_new(struct nouveau_drm *drm, struct nouveau_cli *cli, u32 parent, u32 handle, u32 arg0, u32 arg1, struct nouveau_channel **pchan) { int ret; ret = nouveau_channel_ind(drm, cli, parent, handle, arg0, pchan); if (ret) { NV_DEBUG(cli, "ib channel create, %d\n", ret); ret = nouveau_channel_dma(drm, cli, parent, handle, pchan); if (ret) { NV_DEBUG(cli, "dma channel create, %d\n", ret); return ret; } } ret = nouveau_channel_init(*pchan, arg0, arg1); if (ret) { NV_ERROR(cli, "channel failed to initialise, %d\n", ret); nouveau_channel_del(pchan); return ret; } return 0; }