drm/nouveau: port all engines to new engine module format
This is a HUGE commit, but it's not nearly as bad as it looks - any problems
can be isolated to a particular chipset and engine combination. It was
simply too difficult to port each one at a time, the compat layers are
*already* ridiculous.
Most of the changes here are simply to the glue, the process for each of the
engine modules was to start with a standard skeleton and copy+paste the old
code into the appropriate places, fixing up variable names etc as needed.
v2: Marcin Slusarz <marcin.slusarz@gmail.com>
- fix find/replace bug in license header
v3: Ben Skeggs <bskeggs@redhat.com>
- bump indirect pushbuf size to 8KiB, 4KiB barely enough for userspace and
left no space for kernel's requirements during GEM pushbuf submission.
- fix duplicate assignments noticed by clang
v4: Marcin Slusarz <marcin.slusarz@gmail.com>
- add sparse annotations to nv04_fifo_pause/nv04_fifo_start
- use ioread32_native/iowrite32_native for fifo control registers
v5: Ben Skeggs <bskeggs@redhat.com>
- rebase on v3.6-rc4, modified to keep copy engine fix intact
- nv10/fence: unmap fence bo before destroying
- fixed fermi regression when using nvidia gr fuc
- fixed typo in supported dma_mask checking
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_chan.c b/drivers/gpu/drm/nouveau/nouveau_chan.c
new file mode 100644
index 0000000..3dd5f71
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nouveau_chan.c
@@ -0,0 +1,387 @@
+/*
+ * 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_drm *drm = chan->drm;
+ struct nouveau_fence *fence = NULL;
+ int ret;
+
+ ret = nouveau_fence_new(chan, &fence);
+ if (!ret) {
+ ret = nouveau_fence_wait(fence, false, false);
+ nouveau_fence_unref(&fence);
+ }
+
+ if (ret)
+ NV_ERROR(drm, "failed to idle channel 0x%08x\n", chan->handle);
+ 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);
+ 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;
+}
+
+int
+nouveau_channel_ind(struct nouveau_drm *drm, struct nouveau_cli *cli,
+ u32 parent, u32 handle, struct nouveau_channel **pchan)
+{
+ static const u16 oclasses[] = { 0xa06f, 0x906f, 0x826f, 0x506f, 0 };
+ const u16 *oclass = oclasses;
+ struct nv_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;
+
+ 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[] = { 0x006e, 0 };
+ const u16 *oclass = oclasses;
+ struct nv_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;
+
+ chan->vram = vram;
+ chan->gart = gart;
+
+ /* 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;
+ }
+
+ /* initialise dma tracking parameters */
+ switch (nv_hclass(chan->object) & 0xffff) {
+ 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, and
+ * to signal flip completion), bind it to a subchannel.
+ */
+ ret = nouveau_object_new(nv_object(client), chan->handle,
+ NvSw, nouveau_abi16_swclass(chan->drm),
+ NULL, 0, &object);
+ if (ret)
+ return ret;
+
+ swch = (void *)object->parent;
+ swch->flip = nouveau_flip_complete;
+ swch->flip_data = chan;
+
+ if (device->card_type < NV_C0) {
+ 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 vram, u32 gart,
+ struct nouveau_channel **pchan)
+{
+ int ret;
+
+ ret = nouveau_channel_ind(drm, cli, parent, handle, pchan);
+ if (ret) {
+ NV_DEBUG(drm, "ib channel create, %d\n", ret);
+ ret = nouveau_channel_dma(drm, cli, parent, handle, pchan);
+ if (ret) {
+ NV_DEBUG(drm, "dma channel create, %d\n", ret);
+ return ret;
+ }
+ }
+
+ ret = nouveau_channel_init(*pchan, vram, gart);
+ if (ret) {
+ NV_ERROR(drm, "channel failed to initialise, %d\n", ret);
+ nouveau_channel_del(pchan);
+ return ret;
+ }
+
+ return 0;
+}