Merge branch 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-next

This is a major rework of the nouveau driver core, to reflect more closely
how the hw is used and to make it easier to implement newer features now
that the GPUs are more clearly understood than when nouveau started.

It also contains a few other bits:
thermal patches
nv41/44 pcie gart fixes
i2c unregistering fixes.

* 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6: (191 commits)
  drm/nv98/crypt: fix fuc build with latest envyas
  drm/nouveau/devinit: fixup various issues with subdev ctor/init ordering
  drm/nv41/vm: fix and enable use of "real" pciegart
  drm/nv44/vm: fix and enable use of "real" pciegart
  drm/nv04/dmaobj: fixup vm target handling in preparation for nv4x pcie
  drm/nouveau: store supported dma mask in vmmgr
  drm/nvc0/ibus: initial implementation of subdev
  drm/nouveau/therm: add support for fan-control modes
  drm/nouveau/hwmon: rename pwm0* to pmw1* to follow hwmon's rules
  drm/nouveau/therm: calculate the pwm divisor on nv50+
  drm/nouveau/fan: rewrite the fan tachometer driver to get more precision, faster
  drm/nouveau/therm: move thermal-related functions to the therm subdev
  drm/nouveau/bios: parse the pwm divisor from the perf table
  drm/nouveau/therm: use the EXTDEV table to detect i2c monitoring devices
  drm/nouveau/therm: rework thermal table parsing
  drm/nouveau/gpio: expose the PWM/TOGGLE parameter found in the gpio vbios table
  drm/nouveau: fix pm initialization order
  drm/nouveau/bios: check that fixed tvdac gpio data is valid before using it
  drm/nouveau: log channel debug/error messages from client object rather than drm client
  drm/nouveau: have drm debugging macros build on top of core macros
  ...

Conflicts:
	drivers/gpu/drm/nouveau/nouveau_dp.c

1 files changed, 400 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_chan.c b/drivers/gpu/drm/nouveau/nouveau_chan.c
new file mode 100644
index 000000000000..c1d7301c0e9c
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nouveau_chan.c
@@ -0,0 +1,400 @@
+/*
+ * 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, &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\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;
+}
+
+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, and
+	 * to signal flip completion), bind it to a subchannel.
+	 */
+	if (chan != chan->drm->cechan) {
+		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 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;
+}