577 lines
16 KiB
C
577 lines
16 KiB
C
/*
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* Copyright 2012 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Ben Skeggs
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*/
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#include <nvif/push006c.h>
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#include <nvif/class.h>
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#include <nvif/cl0002.h>
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#include <nvif/if0020.h>
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#include "nouveau_drv.h"
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#include "nouveau_dma.h"
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#include "nouveau_bo.h"
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#include "nouveau_chan.h"
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#include "nouveau_fence.h"
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#include "nouveau_abi16.h"
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#include "nouveau_vmm.h"
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#include "nouveau_svm.h"
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MODULE_PARM_DESC(vram_pushbuf, "Create DMA push buffers in VRAM");
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int nouveau_vram_pushbuf;
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module_param_named(vram_pushbuf, nouveau_vram_pushbuf, int, 0400);
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static int
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nouveau_channel_killed(struct nvif_event *event, void *repv, u32 repc)
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{
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struct nouveau_channel *chan = container_of(event, typeof(*chan), kill);
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struct nouveau_cli *cli = (void *)chan->user.client;
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NV_PRINTK(warn, cli, "channel %d killed!\n", chan->chid);
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atomic_set(&chan->killed, 1);
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if (chan->fence)
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nouveau_fence_context_kill(chan->fence, -ENODEV);
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return NVIF_EVENT_DROP;
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}
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int
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nouveau_channel_idle(struct nouveau_channel *chan)
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{
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if (likely(chan && chan->fence && !atomic_read(&chan->killed))) {
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struct nouveau_cli *cli = (void *)chan->user.client;
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struct nouveau_fence *fence = NULL;
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int ret;
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ret = nouveau_fence_new(chan, false, &fence);
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if (!ret) {
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ret = nouveau_fence_wait(fence, false, false);
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nouveau_fence_unref(&fence);
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}
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if (ret) {
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NV_PRINTK(err, cli, "failed to idle channel %d [%s]\n",
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chan->chid, nvxx_client(&cli->base)->name);
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return ret;
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}
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}
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return 0;
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}
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void
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nouveau_channel_del(struct nouveau_channel **pchan)
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{
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struct nouveau_channel *chan = *pchan;
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if (chan) {
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struct nouveau_cli *cli = (void *)chan->user.client;
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if (chan->fence)
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nouveau_fence(chan->drm)->context_del(chan);
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if (cli)
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nouveau_svmm_part(chan->vmm->svmm, chan->inst);
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nvif_object_dtor(&chan->nvsw);
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nvif_object_dtor(&chan->gart);
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nvif_object_dtor(&chan->vram);
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nvif_event_dtor(&chan->kill);
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nvif_object_dtor(&chan->user);
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nvif_mem_dtor(&chan->mem_userd);
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nvif_object_dtor(&chan->push.ctxdma);
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nouveau_vma_del(&chan->push.vma);
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nouveau_bo_unmap(chan->push.buffer);
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if (chan->push.buffer && chan->push.buffer->bo.pin_count)
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nouveau_bo_unpin(chan->push.buffer);
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nouveau_bo_ref(NULL, &chan->push.buffer);
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kfree(chan);
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}
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*pchan = NULL;
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}
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static void
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nouveau_channel_kick(struct nvif_push *push)
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{
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struct nouveau_channel *chan = container_of(push, typeof(*chan), chan._push);
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chan->dma.cur = chan->dma.cur + (chan->chan._push.cur - chan->chan._push.bgn);
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FIRE_RING(chan);
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chan->chan._push.bgn = chan->chan._push.cur;
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}
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static int
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nouveau_channel_wait(struct nvif_push *push, u32 size)
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{
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struct nouveau_channel *chan = container_of(push, typeof(*chan), chan._push);
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int ret;
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chan->dma.cur = chan->dma.cur + (chan->chan._push.cur - chan->chan._push.bgn);
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ret = RING_SPACE(chan, size);
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if (ret == 0) {
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chan->chan._push.bgn = chan->chan._push.mem.object.map.ptr;
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chan->chan._push.bgn = chan->chan._push.bgn + chan->dma.cur;
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chan->chan._push.cur = chan->chan._push.bgn;
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chan->chan._push.end = chan->chan._push.bgn + size;
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}
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return ret;
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}
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static int
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nouveau_channel_prep(struct nouveau_drm *drm, struct nvif_device *device,
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u32 size, struct nouveau_channel **pchan)
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{
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struct nouveau_cli *cli = (void *)device->object.client;
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struct nv_dma_v0 args = {};
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struct nouveau_channel *chan;
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u32 target;
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int ret;
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chan = *pchan = kzalloc(sizeof(*chan), GFP_KERNEL);
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if (!chan)
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return -ENOMEM;
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chan->device = device;
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chan->drm = drm;
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chan->vmm = cli->svm.cli ? &cli->svm : &cli->vmm;
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atomic_set(&chan->killed, 0);
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/* allocate memory for dma push buffer */
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target = NOUVEAU_GEM_DOMAIN_GART | NOUVEAU_GEM_DOMAIN_COHERENT;
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if (nouveau_vram_pushbuf)
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target = NOUVEAU_GEM_DOMAIN_VRAM;
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ret = nouveau_bo_new(cli, size, 0, target, 0, 0, NULL, NULL,
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&chan->push.buffer);
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if (ret == 0) {
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ret = nouveau_bo_pin(chan->push.buffer, target, false);
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if (ret == 0)
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ret = nouveau_bo_map(chan->push.buffer);
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}
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if (ret) {
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nouveau_channel_del(pchan);
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return ret;
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}
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chan->chan._push.mem.object.parent = cli->base.object.parent;
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chan->chan._push.mem.object.client = &cli->base;
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chan->chan._push.mem.object.name = "chanPush";
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chan->chan._push.mem.object.map.ptr = chan->push.buffer->kmap.virtual;
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chan->chan._push.wait = nouveau_channel_wait;
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chan->chan._push.kick = nouveau_channel_kick;
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chan->chan.push = &chan->chan._push;
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/* create dma object covering the *entire* memory space that the
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* pushbuf lives in, this is because the GEM code requires that
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* we be able to call out to other (indirect) push buffers
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*/
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chan->push.addr = chan->push.buffer->offset;
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if (device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
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ret = nouveau_vma_new(chan->push.buffer, chan->vmm,
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&chan->push.vma);
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if (ret) {
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nouveau_channel_del(pchan);
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return ret;
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}
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chan->push.addr = chan->push.vma->addr;
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if (device->info.family >= NV_DEVICE_INFO_V0_FERMI)
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return 0;
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args.target = NV_DMA_V0_TARGET_VM;
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args.access = NV_DMA_V0_ACCESS_VM;
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args.start = 0;
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args.limit = chan->vmm->vmm.limit - 1;
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} else
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if (chan->push.buffer->bo.resource->mem_type == TTM_PL_VRAM) {
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if (device->info.family == NV_DEVICE_INFO_V0_TNT) {
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/* nv04 vram pushbuf hack, retarget to its location in
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* the framebuffer bar rather than direct vram access..
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* nfi why this exists, it came from the -nv ddx.
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*/
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args.target = NV_DMA_V0_TARGET_PCI;
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args.access = NV_DMA_V0_ACCESS_RDWR;
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args.start = nvxx_device(device)->func->
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resource_addr(nvxx_device(device), 1);
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args.limit = args.start + device->info.ram_user - 1;
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} else {
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args.target = NV_DMA_V0_TARGET_VRAM;
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args.access = NV_DMA_V0_ACCESS_RDWR;
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args.start = 0;
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args.limit = device->info.ram_user - 1;
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}
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} else {
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if (chan->drm->agp.bridge) {
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args.target = NV_DMA_V0_TARGET_AGP;
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args.access = NV_DMA_V0_ACCESS_RDWR;
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args.start = chan->drm->agp.base;
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args.limit = chan->drm->agp.base +
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chan->drm->agp.size - 1;
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} else {
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args.target = NV_DMA_V0_TARGET_VM;
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args.access = NV_DMA_V0_ACCESS_RDWR;
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args.start = 0;
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args.limit = chan->vmm->vmm.limit - 1;
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}
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}
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ret = nvif_object_ctor(&device->object, "abi16PushCtxDma", 0,
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NV_DMA_FROM_MEMORY, &args, sizeof(args),
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&chan->push.ctxdma);
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if (ret) {
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nouveau_channel_del(pchan);
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return ret;
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}
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return 0;
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}
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static int
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nouveau_channel_ctor(struct nouveau_drm *drm, struct nvif_device *device, bool priv, u64 runm,
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struct nouveau_channel **pchan)
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{
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static const struct {
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s32 oclass;
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int version;
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} hosts[] = {
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{ AMPERE_CHANNEL_GPFIFO_B, 0 },
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{ AMPERE_CHANNEL_GPFIFO_A, 0 },
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{ TURING_CHANNEL_GPFIFO_A, 0 },
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{ VOLTA_CHANNEL_GPFIFO_A, 0 },
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{ PASCAL_CHANNEL_GPFIFO_A, 0 },
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{ MAXWELL_CHANNEL_GPFIFO_A, 0 },
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{ KEPLER_CHANNEL_GPFIFO_B, 0 },
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{ KEPLER_CHANNEL_GPFIFO_A, 0 },
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{ FERMI_CHANNEL_GPFIFO , 0 },
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{ G82_CHANNEL_GPFIFO , 0 },
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{ NV50_CHANNEL_GPFIFO , 0 },
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{ NV40_CHANNEL_DMA , 0 },
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{ NV17_CHANNEL_DMA , 0 },
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{ NV10_CHANNEL_DMA , 0 },
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{ NV03_CHANNEL_DMA , 0 },
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{}
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};
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struct {
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struct nvif_chan_v0 chan;
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char name[TASK_COMM_LEN+16];
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} args;
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struct nouveau_cli *cli = (void *)device->object.client;
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struct nouveau_channel *chan;
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const u64 plength = 0x10000;
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const u64 ioffset = plength;
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const u64 ilength = 0x02000;
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char name[TASK_COMM_LEN];
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int cid, ret;
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u64 size;
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cid = nvif_mclass(&device->object, hosts);
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if (cid < 0)
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return cid;
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if (hosts[cid].oclass < NV50_CHANNEL_GPFIFO)
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size = plength;
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else
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size = ioffset + ilength;
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/* allocate dma push buffer */
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ret = nouveau_channel_prep(drm, device, size, &chan);
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*pchan = chan;
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if (ret)
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return ret;
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/* create channel object */
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args.chan.version = 0;
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args.chan.namelen = sizeof(args.name);
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args.chan.runlist = __ffs64(runm);
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args.chan.runq = 0;
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args.chan.priv = priv;
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args.chan.devm = BIT(0);
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if (hosts[cid].oclass < NV50_CHANNEL_GPFIFO) {
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args.chan.vmm = 0;
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args.chan.ctxdma = nvif_handle(&chan->push.ctxdma);
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args.chan.offset = chan->push.addr;
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args.chan.length = 0;
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} else {
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args.chan.vmm = nvif_handle(&chan->vmm->vmm.object);
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if (hosts[cid].oclass < FERMI_CHANNEL_GPFIFO)
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args.chan.ctxdma = nvif_handle(&chan->push.ctxdma);
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else
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args.chan.ctxdma = 0;
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args.chan.offset = ioffset + chan->push.addr;
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args.chan.length = ilength;
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}
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args.chan.huserd = 0;
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args.chan.ouserd = 0;
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/* allocate userd */
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if (hosts[cid].oclass >= VOLTA_CHANNEL_GPFIFO_A) {
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ret = nvif_mem_ctor(&cli->mmu, "abi16ChanUSERD", NVIF_CLASS_MEM_GF100,
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NVIF_MEM_VRAM | NVIF_MEM_COHERENT | NVIF_MEM_MAPPABLE,
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0, PAGE_SIZE, NULL, 0, &chan->mem_userd);
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if (ret)
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return ret;
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args.chan.huserd = nvif_handle(&chan->mem_userd.object);
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args.chan.ouserd = 0;
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chan->userd = &chan->mem_userd.object;
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} else {
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chan->userd = &chan->user;
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}
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get_task_comm(name, current);
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snprintf(args.name, sizeof(args.name), "%s[%d]", name, task_pid_nr(current));
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ret = nvif_object_ctor(&device->object, "abi16ChanUser", 0, hosts[cid].oclass,
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&args, sizeof(args), &chan->user);
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if (ret) {
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nouveau_channel_del(pchan);
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return ret;
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}
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chan->runlist = args.chan.runlist;
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chan->chid = args.chan.chid;
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chan->inst = args.chan.inst;
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chan->token = args.chan.token;
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return 0;
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}
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static int
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nouveau_channel_init(struct nouveau_channel *chan, u32 vram, u32 gart)
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{
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struct nvif_device *device = chan->device;
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struct nouveau_drm *drm = chan->drm;
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struct nv_dma_v0 args = {};
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int ret, i;
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ret = nvif_object_map(chan->userd, NULL, 0);
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if (ret)
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return ret;
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if (chan->user.oclass >= FERMI_CHANNEL_GPFIFO) {
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struct {
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struct nvif_event_v0 base;
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struct nvif_chan_event_v0 host;
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} args;
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args.host.version = 0;
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args.host.type = NVIF_CHAN_EVENT_V0_KILLED;
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ret = nvif_event_ctor(&chan->user, "abi16ChanKilled", chan->chid,
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nouveau_channel_killed, false,
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&args.base, sizeof(args), &chan->kill);
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if (ret == 0)
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ret = nvif_event_allow(&chan->kill);
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if (ret) {
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NV_ERROR(drm, "Failed to request channel kill "
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"notification: %d\n", ret);
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return ret;
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}
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}
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/* allocate dma objects to cover all allowed vram, and gart */
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if (device->info.family < NV_DEVICE_INFO_V0_FERMI) {
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if (device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
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args.target = NV_DMA_V0_TARGET_VM;
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args.access = NV_DMA_V0_ACCESS_VM;
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args.start = 0;
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args.limit = chan->vmm->vmm.limit - 1;
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} else {
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args.target = NV_DMA_V0_TARGET_VRAM;
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args.access = NV_DMA_V0_ACCESS_RDWR;
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args.start = 0;
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args.limit = device->info.ram_user - 1;
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}
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ret = nvif_object_ctor(&chan->user, "abi16ChanVramCtxDma", vram,
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NV_DMA_IN_MEMORY, &args, sizeof(args),
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&chan->vram);
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if (ret)
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return ret;
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if (device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
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args.target = NV_DMA_V0_TARGET_VM;
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args.access = NV_DMA_V0_ACCESS_VM;
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args.start = 0;
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args.limit = chan->vmm->vmm.limit - 1;
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} else
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if (chan->drm->agp.bridge) {
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args.target = NV_DMA_V0_TARGET_AGP;
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args.access = NV_DMA_V0_ACCESS_RDWR;
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args.start = chan->drm->agp.base;
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args.limit = chan->drm->agp.base +
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chan->drm->agp.size - 1;
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} else {
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args.target = NV_DMA_V0_TARGET_VM;
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args.access = NV_DMA_V0_ACCESS_RDWR;
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args.start = 0;
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args.limit = chan->vmm->vmm.limit - 1;
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}
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ret = nvif_object_ctor(&chan->user, "abi16ChanGartCtxDma", gart,
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NV_DMA_IN_MEMORY, &args, sizeof(args),
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&chan->gart);
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if (ret)
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return ret;
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}
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/* initialise dma tracking parameters */
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switch (chan->user.oclass & 0x00ff) {
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case 0x006b:
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case 0x006e:
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chan->user_put = 0x40;
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chan->user_get = 0x44;
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chan->dma.max = (0x10000 / 4) - 2;
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break;
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default:
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chan->user_put = 0x40;
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chan->user_get = 0x44;
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chan->user_get_hi = 0x60;
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chan->dma.ib_base = 0x10000 / 4;
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chan->dma.ib_max = (0x02000 / 8) - 1;
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chan->dma.ib_put = 0;
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chan->dma.ib_free = chan->dma.ib_max - chan->dma.ib_put;
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chan->dma.max = chan->dma.ib_base;
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break;
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}
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chan->dma.put = 0;
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chan->dma.cur = chan->dma.put;
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chan->dma.free = chan->dma.max - chan->dma.cur;
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ret = PUSH_WAIT(chan->chan.push, NOUVEAU_DMA_SKIPS);
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if (ret)
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return ret;
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for (i = 0; i < NOUVEAU_DMA_SKIPS; i++)
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PUSH_DATA(chan->chan.push, 0x00000000);
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/* allocate software object class (used for fences on <= nv05) */
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if (device->info.family < NV_DEVICE_INFO_V0_CELSIUS) {
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ret = nvif_object_ctor(&chan->user, "abi16NvswFence", 0x006e,
|
|
NVIF_CLASS_SW_NV04,
|
|
NULL, 0, &chan->nvsw);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = PUSH_WAIT(chan->chan.push, 2);
|
|
if (ret)
|
|
return ret;
|
|
|
|
PUSH_NVSQ(chan->chan.push, NV_SW, 0x0000, chan->nvsw.handle);
|
|
PUSH_KICK(chan->chan.push);
|
|
}
|
|
|
|
/* initialise synchronisation */
|
|
return nouveau_fence(chan->drm)->context_new(chan);
|
|
}
|
|
|
|
int
|
|
nouveau_channel_new(struct nouveau_drm *drm, struct nvif_device *device,
|
|
bool priv, u64 runm, u32 vram, u32 gart, struct nouveau_channel **pchan)
|
|
{
|
|
struct nouveau_cli *cli = (void *)device->object.client;
|
|
int ret;
|
|
|
|
ret = nouveau_channel_ctor(drm, device, priv, runm, pchan);
|
|
if (ret) {
|
|
NV_PRINTK(dbg, cli, "channel create, %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = nouveau_channel_init(*pchan, vram, gart);
|
|
if (ret) {
|
|
NV_PRINTK(err, cli, "channel failed to initialise, %d\n", ret);
|
|
nouveau_channel_del(pchan);
|
|
return ret;
|
|
}
|
|
|
|
ret = nouveau_svmm_join((*pchan)->vmm->svmm, (*pchan)->inst);
|
|
if (ret)
|
|
nouveau_channel_del(pchan);
|
|
|
|
return ret;
|
|
}
|
|
|
|
void
|
|
nouveau_channels_fini(struct nouveau_drm *drm)
|
|
{
|
|
kfree(drm->runl);
|
|
}
|
|
|
|
int
|
|
nouveau_channels_init(struct nouveau_drm *drm)
|
|
{
|
|
struct {
|
|
struct nv_device_info_v1 m;
|
|
struct {
|
|
struct nv_device_info_v1_data channels;
|
|
struct nv_device_info_v1_data runlists;
|
|
} v;
|
|
} args = {
|
|
.m.version = 1,
|
|
.m.count = sizeof(args.v) / sizeof(args.v.channels),
|
|
.v.channels.mthd = NV_DEVICE_HOST_CHANNELS,
|
|
.v.runlists.mthd = NV_DEVICE_HOST_RUNLISTS,
|
|
};
|
|
struct nvif_object *device = &drm->client.device.object;
|
|
int ret, i;
|
|
|
|
ret = nvif_object_mthd(device, NV_DEVICE_V0_INFO, &args, sizeof(args));
|
|
if (ret ||
|
|
args.v.runlists.mthd == NV_DEVICE_INFO_INVALID || !args.v.runlists.data ||
|
|
args.v.channels.mthd == NV_DEVICE_INFO_INVALID)
|
|
return -ENODEV;
|
|
|
|
drm->chan_nr = drm->chan_total = args.v.channels.data;
|
|
drm->runl_nr = fls64(args.v.runlists.data);
|
|
drm->runl = kcalloc(drm->runl_nr, sizeof(*drm->runl), GFP_KERNEL);
|
|
if (!drm->runl)
|
|
return -ENOMEM;
|
|
|
|
if (drm->chan_nr == 0) {
|
|
for (i = 0; i < drm->runl_nr; i++) {
|
|
if (!(args.v.runlists.data & BIT(i)))
|
|
continue;
|
|
|
|
args.v.channels.mthd = NV_DEVICE_HOST_RUNLIST_CHANNELS;
|
|
args.v.channels.data = i;
|
|
|
|
ret = nvif_object_mthd(device, NV_DEVICE_V0_INFO, &args, sizeof(args));
|
|
if (ret || args.v.channels.mthd == NV_DEVICE_INFO_INVALID)
|
|
return -ENODEV;
|
|
|
|
drm->runl[i].chan_nr = args.v.channels.data;
|
|
drm->runl[i].chan_id_base = drm->chan_total;
|
|
drm->runl[i].context_base = dma_fence_context_alloc(drm->runl[i].chan_nr);
|
|
|
|
drm->chan_total += drm->runl[i].chan_nr;
|
|
}
|
|
} else {
|
|
drm->runl[0].context_base = dma_fence_context_alloc(drm->chan_nr);
|
|
for (i = 1; i < drm->runl_nr; i++)
|
|
drm->runl[i].context_base = drm->runl[0].context_base;
|
|
|
|
}
|
|
|
|
return 0;
|
|
}
|