From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- drivers/gpu/drm/nouveau/nouveau_chan.c | 425 +++++++++++++++++++++++++++++++++ 1 file changed, 425 insertions(+) create mode 100644 drivers/gpu/drm/nouveau/nouveau_chan.c (limited to 'drivers/gpu/drm/nouveau/nouveau_chan.c') diff --git a/drivers/gpu/drm/nouveau/nouveau_chan.c b/drivers/gpu/drm/nouveau/nouveau_chan.c new file mode 100644 index 000000000..0589babc5 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nouveau_chan.c @@ -0,0 +1,425 @@ +/* + * 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 +#include + +/*XXX*/ +#include + +#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"); +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 = (void *)nvif_client(chan->object); + 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_PRINTK(error, cli, "failed to idle channel 0x%08x [%s]\n", + chan->object->handle, nvxx_client(&cli->base)->name); + return ret; +} + +void +nouveau_channel_del(struct nouveau_channel **pchan) +{ + struct nouveau_channel *chan = *pchan; + if (chan) { + if (chan->fence) { + nouveau_channel_idle(chan); + nouveau_fence(chan->drm)->context_del(chan); + } + nvif_object_fini(&chan->nvsw); + nvif_object_fini(&chan->gart); + nvif_object_fini(&chan->vram); + nvif_object_ref(NULL, &chan->object); + nvif_object_fini(&chan->push.ctxdma); + 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); + nvif_device_ref(NULL, &chan->device); + kfree(chan); + } + *pchan = NULL; +} + +static int +nouveau_channel_prep(struct nouveau_drm *drm, struct nvif_device *device, + u32 handle, u32 size, struct nouveau_channel **pchan) +{ + struct nouveau_cli *cli = (void *)nvif_client(&device->base); + struct nvkm_mmu *mmu = nvxx_mmu(device); + struct nv_dma_v0 args = {}; + struct nouveau_channel *chan; + u32 target; + int ret; + + chan = *pchan = kzalloc(sizeof(*chan), GFP_KERNEL); + if (!chan) + return -ENOMEM; + + nvif_device_ref(device, &chan->device); + chan->drm = drm; + + /* allocate memory for dma push buffer */ + target = TTM_PL_FLAG_TT | TTM_PL_FLAG_UNCACHED; + if (nouveau_vram_pushbuf) + target = TTM_PL_FLAG_VRAM; + + ret = nouveau_bo_new(drm->dev, size, 0, target, 0, 0, NULL, NULL, + &chan->push.buffer); + if (ret == 0) { + ret = nouveau_bo_pin(chan->push.buffer, target, false); + 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; + + if (device->info.family >= NV_DEVICE_INFO_V0_TESLA) { + ret = nouveau_bo_vma_add(chan->push.buffer, cli->vm, + &chan->push.vma); + if (ret) { + nouveau_channel_del(pchan); + return ret; + } + + args.target = NV_DMA_V0_TARGET_VM; + args.access = NV_DMA_V0_ACCESS_VM; + args.start = 0; + args.limit = cli->vm->mmu->limit - 1; + } else + if (chan->push.buffer->bo.mem.mem_type == TTM_PL_VRAM) { + if (device->info.family == NV_DEVICE_INFO_V0_TNT) { + /* 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.target = NV_DMA_V0_TARGET_PCI; + args.access = NV_DMA_V0_ACCESS_RDWR; + args.start = nv_device_resource_start(nvxx_device(device), 1); + args.limit = args.start + device->info.ram_user - 1; + } else { + args.target = NV_DMA_V0_TARGET_VRAM; + args.access = NV_DMA_V0_ACCESS_RDWR; + args.start = 0; + args.limit = device->info.ram_user - 1; + } + } else { + if (chan->drm->agp.stat == ENABLED) { + args.target = NV_DMA_V0_TARGET_AGP; + args.access = NV_DMA_V0_ACCESS_RDWR; + args.start = chan->drm->agp.base; + args.limit = chan->drm->agp.base + + chan->drm->agp.size - 1; + } else { + args.target = NV_DMA_V0_TARGET_VM; + args.access = NV_DMA_V0_ACCESS_RDWR; + args.start = 0; + args.limit = mmu->limit - 1; + } + } + + ret = nvif_object_init(nvif_object(device), NULL, NVDRM_PUSH | + (handle & 0xffff), NV_DMA_FROM_MEMORY, + &args, sizeof(args), &chan->push.ctxdma); + if (ret) { + nouveau_channel_del(pchan); + return ret; + } + + return 0; +} + +static int +nouveau_channel_ind(struct nouveau_drm *drm, struct nvif_device *device, + u32 handle, u32 engine, struct nouveau_channel **pchan) +{ + static const u16 oclasses[] = { MAXWELL_CHANNEL_GPFIFO_A, + KEPLER_CHANNEL_GPFIFO_A, + FERMI_CHANNEL_GPFIFO, + G82_CHANNEL_GPFIFO, + NV50_CHANNEL_GPFIFO, + 0 }; + const u16 *oclass = oclasses; + union { + struct nv50_channel_gpfifo_v0 nv50; + struct kepler_channel_gpfifo_a_v0 kepler; + } args, *retn; + struct nouveau_channel *chan; + u32 size; + int ret; + + /* allocate dma push buffer */ + ret = nouveau_channel_prep(drm, device, handle, 0x12000, &chan); + *pchan = chan; + if (ret) + return ret; + + /* create channel object */ + do { + if (oclass[0] >= KEPLER_CHANNEL_GPFIFO_A) { + args.kepler.version = 0; + args.kepler.engine = engine; + args.kepler.pushbuf = chan->push.ctxdma.handle; + args.kepler.ilength = 0x02000; + args.kepler.ioffset = 0x10000 + chan->push.vma.offset; + size = sizeof(args.kepler); + } else { + args.nv50.version = 0; + args.nv50.pushbuf = chan->push.ctxdma.handle; + args.nv50.ilength = 0x02000; + args.nv50.ioffset = 0x10000 + chan->push.vma.offset; + size = sizeof(args.nv50); + } + + ret = nvif_object_new(nvif_object(device), handle, *oclass++, + &args, size, &chan->object); + if (ret == 0) { + retn = chan->object->data; + if (chan->object->oclass >= KEPLER_CHANNEL_GPFIFO_A) + chan->chid = retn->kepler.chid; + else + chan->chid = retn->nv50.chid; + return ret; + } + } while (*oclass); + + nouveau_channel_del(pchan); + return ret; +} + +static int +nouveau_channel_dma(struct nouveau_drm *drm, struct nvif_device *device, + u32 handle, struct nouveau_channel **pchan) +{ + static const u16 oclasses[] = { NV40_CHANNEL_DMA, + NV17_CHANNEL_DMA, + NV10_CHANNEL_DMA, + NV03_CHANNEL_DMA, + 0 }; + const u16 *oclass = oclasses; + struct nv03_channel_dma_v0 args, *retn; + struct nouveau_channel *chan; + int ret; + + /* allocate dma push buffer */ + ret = nouveau_channel_prep(drm, device, handle, 0x10000, &chan); + *pchan = chan; + if (ret) + return ret; + + /* create channel object */ + args.version = 0; + args.pushbuf = chan->push.ctxdma.handle; + args.offset = chan->push.vma.offset; + + do { + ret = nvif_object_new(nvif_object(device), handle, *oclass++, + &args, sizeof(args), &chan->object); + if (ret == 0) { + retn = chan->object->data; + chan->chid = retn->chid; + 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 nvif_device *device = chan->device; + struct nouveau_cli *cli = (void *)nvif_client(&device->base); + struct nvkm_mmu *mmu = nvxx_mmu(device); + struct nvkm_sw_chan *swch; + struct nv_dma_v0 args = {}; + int ret, i; + + nvif_object_map(chan->object); + + /* allocate dma objects to cover all allowed vram, and gart */ + if (device->info.family < NV_DEVICE_INFO_V0_FERMI) { + if (device->info.family >= NV_DEVICE_INFO_V0_TESLA) { + args.target = NV_DMA_V0_TARGET_VM; + args.access = NV_DMA_V0_ACCESS_VM; + args.start = 0; + args.limit = cli->vm->mmu->limit - 1; + } else { + args.target = NV_DMA_V0_TARGET_VRAM; + args.access = NV_DMA_V0_ACCESS_RDWR; + args.start = 0; + args.limit = device->info.ram_user - 1; + } + + ret = nvif_object_init(chan->object, NULL, vram, + NV_DMA_IN_MEMORY, &args, + sizeof(args), &chan->vram); + if (ret) + return ret; + + if (device->info.family >= NV_DEVICE_INFO_V0_TESLA) { + args.target = NV_DMA_V0_TARGET_VM; + args.access = NV_DMA_V0_ACCESS_VM; + args.start = 0; + args.limit = cli->vm->mmu->limit - 1; + } else + if (chan->drm->agp.stat == ENABLED) { + args.target = NV_DMA_V0_TARGET_AGP; + args.access = NV_DMA_V0_ACCESS_RDWR; + args.start = chan->drm->agp.base; + args.limit = chan->drm->agp.base + + chan->drm->agp.size - 1; + } else { + args.target = NV_DMA_V0_TARGET_VM; + args.access = NV_DMA_V0_ACCESS_RDWR; + args.start = 0; + args.limit = mmu->limit - 1; + } + + ret = nvif_object_init(chan->object, NULL, gart, + NV_DMA_IN_MEMORY, &args, + sizeof(args), &chan->gart); + if (ret) + return ret; + } + + /* initialise dma tracking parameters */ + switch (chan->object->oclass & 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->info.family < NV_DEVICE_INFO_V0_CELSIUS) { + ret = nvif_object_init(chan->object, NULL, 0x006e, 0x006e, + NULL, 0, &chan->nvsw); + if (ret) + return ret; + + swch = (void *)nvxx_object(&chan->nvsw)->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, chan->nvsw.handle); + FIRE_RING (chan); + } + + /* initialise synchronisation */ + return nouveau_fence(chan->drm)->context_new(chan); +} + +int +nouveau_channel_new(struct nouveau_drm *drm, struct nvif_device *device, + u32 handle, u32 arg0, u32 arg1, + struct nouveau_channel **pchan) +{ + struct nouveau_cli *cli = (void *)nvif_client(&device->base); + bool super; + int ret; + + /* hack until fencenv50 is fixed, and agp access relaxed */ + super = cli->base.super; + cli->base.super = true; + + ret = nouveau_channel_ind(drm, device, handle, arg0, pchan); + if (ret) { + NV_PRINTK(debug, cli, "ib channel create, %d\n", ret); + ret = nouveau_channel_dma(drm, device, handle, pchan); + if (ret) { + NV_PRINTK(debug, cli, "dma channel create, %d\n", ret); + goto done; + } + } + + ret = nouveau_channel_init(*pchan, arg0, arg1); + if (ret) { + NV_PRINTK(error, cli, "channel failed to initialise, %d\n", ret); + nouveau_channel_del(pchan); + } + +done: + cli->base.super = super; + return ret; +} -- cgit v1.2.3-54-g00ecf