1 files changed, 399 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv04.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv04.c
new file mode 100644
index 000000000..c6730c124
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv04.c
@@ -0,0 +1,399 @@
+/*
+ * 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 "nv04.h"
+#include "channv04.h"
+#include "regsnv04.h"
+
+#include <core/client.h>
+#include <core/ramht.h>
+#include <subdev/instmem.h>
+#include <subdev/timer.h>
+#include <engine/sw.h>
+
+static const struct nv04_fifo_ramfc
+nv04_fifo_ramfc[] = {
+	{ 32,  0, 0x00,  0, NV04_PFIFO_CACHE1_DMA_PUT },
+	{ 32,  0, 0x04,  0, NV04_PFIFO_CACHE1_DMA_GET },
+	{ 16,  0, 0x08,  0, NV04_PFIFO_CACHE1_DMA_INSTANCE },
+	{ 16, 16, 0x08,  0, NV04_PFIFO_CACHE1_DMA_DCOUNT },
+	{ 32,  0, 0x0c,  0, NV04_PFIFO_CACHE1_DMA_STATE },
+	{ 32,  0, 0x10,  0, NV04_PFIFO_CACHE1_DMA_FETCH },
+	{ 32,  0, 0x14,  0, NV04_PFIFO_CACHE1_ENGINE },
+	{ 32,  0, 0x18,  0, NV04_PFIFO_CACHE1_PULL1 },
+	{}
+};
+
+void
+nv04_fifo_pause(struct nvkm_fifo *base, unsigned long *pflags)
+__acquires(fifo->base.lock)
+{
+	struct nv04_fifo *fifo = nv04_fifo(base);
+	struct nvkm_device *device = fifo->base.engine.subdev.device;
+	unsigned long flags;
+
+	spin_lock_irqsave(&fifo->base.lock, flags);
+	*pflags = flags;
+
+	nvkm_wr32(device, NV03_PFIFO_CACHES, 0x00000000);
+	nvkm_mask(device, NV04_PFIFO_CACHE1_PULL0, 0x00000001, 0x00000000);
+
+	/* in some cases the puller may be left in an inconsistent state
+	 * if you try to stop it while it's busy translating handles.
+	 * sometimes you get a CACHE_ERROR, sometimes it just fails
+	 * silently; sending incorrect instance offsets to PGRAPH after
+	 * it's started up again.
+	 *
+	 * to avoid this, we invalidate the most recently calculated
+	 * instance.
+	 */
+	nvkm_msec(device, 2000,
+		u32 tmp = nvkm_rd32(device, NV04_PFIFO_CACHE1_PULL0);
+		if (!(tmp & NV04_PFIFO_CACHE1_PULL0_HASH_BUSY))
+			break;
+	);
+
+	if (nvkm_rd32(device, NV04_PFIFO_CACHE1_PULL0) &
+			  NV04_PFIFO_CACHE1_PULL0_HASH_FAILED)
+		nvkm_wr32(device, NV03_PFIFO_INTR_0, NV_PFIFO_INTR_CACHE_ERROR);
+
+	nvkm_wr32(device, NV04_PFIFO_CACHE1_HASH, 0x00000000);
+}
+
+void
+nv04_fifo_start(struct nvkm_fifo *base, unsigned long *pflags)
+__releases(fifo->base.lock)
+{
+	struct nv04_fifo *fifo = nv04_fifo(base);
+	struct nvkm_device *device = fifo->base.engine.subdev.device;
+	unsigned long flags = *pflags;
+
+	nvkm_mask(device, NV04_PFIFO_CACHE1_PULL0, 0x00000001, 0x00000001);
+	nvkm_wr32(device, NV03_PFIFO_CACHES, 0x00000001);
+
+	spin_unlock_irqrestore(&fifo->base.lock, flags);
+}
+
+struct nvkm_engine *
+nv04_fifo_id_engine(struct nvkm_fifo *fifo, int engi)
+{
+	enum nvkm_subdev_type type;
+
+	switch (engi) {
+	case NV04_FIFO_ENGN_SW  : type = NVKM_ENGINE_SW; break;
+	case NV04_FIFO_ENGN_GR  : type = NVKM_ENGINE_GR; break;
+	case NV04_FIFO_ENGN_MPEG: type = NVKM_ENGINE_MPEG; break;
+	case NV04_FIFO_ENGN_DMA : type = NVKM_ENGINE_DMAOBJ; break;
+	default:
+		WARN_ON(1);
+		return NULL;
+	}
+
+	return nvkm_device_engine(fifo->engine.subdev.device, type, 0);
+}
+
+int
+nv04_fifo_engine_id(struct nvkm_fifo *base, struct nvkm_engine *engine)
+{
+	switch (engine->subdev.type) {
+	case NVKM_ENGINE_SW    : return NV04_FIFO_ENGN_SW;
+	case NVKM_ENGINE_GR    : return NV04_FIFO_ENGN_GR;
+	case NVKM_ENGINE_MPEG  : return NV04_FIFO_ENGN_MPEG;
+	case NVKM_ENGINE_DMAOBJ: return NV04_FIFO_ENGN_DMA;
+	default:
+		WARN_ON(1);
+		return 0;
+	}
+}
+
+static const char *
+nv_dma_state_err(u32 state)
+{
+	static const char * const desc[] = {
+		"NONE", "CALL_SUBR_ACTIVE", "INVALID_MTHD", "RET_SUBR_INACTIVE",
+		"INVALID_CMD", "IB_EMPTY"/* NV50+ */, "MEM_FAULT", "UNK"
+	};
+	return desc[(state >> 29) & 0x7];
+}
+
+static bool
+nv04_fifo_swmthd(struct nvkm_device *device, u32 chid, u32 addr, u32 data)
+{
+	struct nvkm_sw *sw = device->sw;
+	const int subc = (addr & 0x0000e000) >> 13;
+	const int mthd = (addr & 0x00001ffc);
+	const u32 mask = 0x0000000f << (subc * 4);
+	u32 engine = nvkm_rd32(device, 0x003280);
+	bool handled = false;
+
+	switch (mthd) {
+	case 0x0000 ... 0x0000: /* subchannel's engine -> software */
+		nvkm_wr32(device, 0x003280, (engine &= ~mask));
+		fallthrough;
+	case 0x0180 ... 0x01fc: /* handle -> instance */
+		data = nvkm_rd32(device, 0x003258) & 0x0000ffff;
+		fallthrough;
+	case 0x0100 ... 0x017c:
+	case 0x0200 ... 0x1ffc: /* pass method down to sw */
+		if (!(engine & mask) && sw)
+			handled = nvkm_sw_mthd(sw, chid, subc, mthd, data);
+		break;
+	default:
+		break;
+	}
+
+	return handled;
+}
+
+static void
+nv04_fifo_cache_error(struct nv04_fifo *fifo, u32 chid, u32 get)
+{
+	struct nvkm_subdev *subdev = &fifo->base.engine.subdev;
+	struct nvkm_device *device = subdev->device;
+	struct nvkm_fifo_chan *chan;
+	unsigned long flags;
+	u32 pull0 = nvkm_rd32(device, 0x003250);
+	u32 mthd, data;
+	int ptr;
+
+	/* NV_PFIFO_CACHE1_GET actually goes to 0xffc before wrapping on my
+	 * G80 chips, but CACHE1 isn't big enough for this much data.. Tests
+	 * show that it wraps around to the start at GET=0x800.. No clue as to
+	 * why..
+	 */
+	ptr = (get & 0x7ff) >> 2;
+
+	if (device->card_type < NV_40) {
+		mthd = nvkm_rd32(device, NV04_PFIFO_CACHE1_METHOD(ptr));
+		data = nvkm_rd32(device, NV04_PFIFO_CACHE1_DATA(ptr));
+	} else {
+		mthd = nvkm_rd32(device, NV40_PFIFO_CACHE1_METHOD(ptr));
+		data = nvkm_rd32(device, NV40_PFIFO_CACHE1_DATA(ptr));
+	}
+
+	if (!(pull0 & 0x00000100) ||
+	    !nv04_fifo_swmthd(device, chid, mthd, data)) {
+		chan = nvkm_fifo_chan_chid(&fifo->base, chid, &flags);
+		nvkm_error(subdev, "CACHE_ERROR - "
+			   "ch %d [%s] subc %d mthd %04x data %08x\n",
+			   chid, chan ? chan->object.client->name : "unknown",
+			   (mthd >> 13) & 7, mthd & 0x1ffc, data);
+		nvkm_fifo_chan_put(&fifo->base, flags, &chan);
+	}
+
+	nvkm_wr32(device, NV04_PFIFO_CACHE1_DMA_PUSH, 0);
+	nvkm_wr32(device, NV03_PFIFO_INTR_0, NV_PFIFO_INTR_CACHE_ERROR);
+
+	nvkm_wr32(device, NV03_PFIFO_CACHE1_PUSH0,
+		nvkm_rd32(device, NV03_PFIFO_CACHE1_PUSH0) & ~1);
+	nvkm_wr32(device, NV03_PFIFO_CACHE1_GET, get + 4);
+	nvkm_wr32(device, NV03_PFIFO_CACHE1_PUSH0,
+		nvkm_rd32(device, NV03_PFIFO_CACHE1_PUSH0) | 1);
+	nvkm_wr32(device, NV04_PFIFO_CACHE1_HASH, 0);
+
+	nvkm_wr32(device, NV04_PFIFO_CACHE1_DMA_PUSH,
+		nvkm_rd32(device, NV04_PFIFO_CACHE1_DMA_PUSH) | 1);
+	nvkm_wr32(device, NV04_PFIFO_CACHE1_PULL0, 1);
+}
+
+static void
+nv04_fifo_dma_pusher(struct nv04_fifo *fifo, u32 chid)
+{
+	struct nvkm_subdev *subdev = &fifo->base.engine.subdev;
+	struct nvkm_device *device = subdev->device;
+	u32 dma_get = nvkm_rd32(device, 0x003244);
+	u32 dma_put = nvkm_rd32(device, 0x003240);
+	u32 push = nvkm_rd32(device, 0x003220);
+	u32 state = nvkm_rd32(device, 0x003228);
+	struct nvkm_fifo_chan *chan;
+	unsigned long flags;
+	const char *name;
+
+	chan = nvkm_fifo_chan_chid(&fifo->base, chid, &flags);
+	name = chan ? chan->object.client->name : "unknown";
+	if (device->card_type == NV_50) {
+		u32 ho_get = nvkm_rd32(device, 0x003328);
+		u32 ho_put = nvkm_rd32(device, 0x003320);
+		u32 ib_get = nvkm_rd32(device, 0x003334);
+		u32 ib_put = nvkm_rd32(device, 0x003330);
+
+		nvkm_error(subdev, "DMA_PUSHER - "
+			   "ch %d [%s] get %02x%08x put %02x%08x ib_get %08x "
+			   "ib_put %08x state %08x (err: %s) push %08x\n",
+			   chid, name, ho_get, dma_get, ho_put, dma_put,
+			   ib_get, ib_put, state, nv_dma_state_err(state),
+			   push);
+
+		/* METHOD_COUNT, in DMA_STATE on earlier chipsets */
+		nvkm_wr32(device, 0x003364, 0x00000000);
+		if (dma_get != dma_put || ho_get != ho_put) {
+			nvkm_wr32(device, 0x003244, dma_put);
+			nvkm_wr32(device, 0x003328, ho_put);
+		} else
+		if (ib_get != ib_put)
+			nvkm_wr32(device, 0x003334, ib_put);
+	} else {
+		nvkm_error(subdev, "DMA_PUSHER - ch %d [%s] get %08x put %08x "
+				   "state %08x (err: %s) push %08x\n",
+			   chid, name, dma_get, dma_put, state,
+			   nv_dma_state_err(state), push);
+
+		if (dma_get != dma_put)
+			nvkm_wr32(device, 0x003244, dma_put);
+	}
+	nvkm_fifo_chan_put(&fifo->base, flags, &chan);
+
+	nvkm_wr32(device, 0x003228, 0x00000000);
+	nvkm_wr32(device, 0x003220, 0x00000001);
+	nvkm_wr32(device, 0x002100, NV_PFIFO_INTR_DMA_PUSHER);
+}
+
+void
+nv04_fifo_intr(struct nvkm_fifo *base)
+{
+	struct nv04_fifo *fifo = nv04_fifo(base);
+	struct nvkm_subdev *subdev = &fifo->base.engine.subdev;
+	struct nvkm_device *device = subdev->device;
+	u32 mask = nvkm_rd32(device, NV03_PFIFO_INTR_EN_0);
+	u32 stat = nvkm_rd32(device, NV03_PFIFO_INTR_0) & mask;
+	u32 reassign, chid, get, sem;
+
+	reassign = nvkm_rd32(device, NV03_PFIFO_CACHES) & 1;
+	nvkm_wr32(device, NV03_PFIFO_CACHES, 0);
+
+	chid = nvkm_rd32(device, NV03_PFIFO_CACHE1_PUSH1) & (fifo->base.nr - 1);
+	get  = nvkm_rd32(device, NV03_PFIFO_CACHE1_GET);
+
+	if (stat & NV_PFIFO_INTR_CACHE_ERROR) {
+		nv04_fifo_cache_error(fifo, chid, get);
+		stat &= ~NV_PFIFO_INTR_CACHE_ERROR;
+	}
+
+	if (stat & NV_PFIFO_INTR_DMA_PUSHER) {
+		nv04_fifo_dma_pusher(fifo, chid);
+		stat &= ~NV_PFIFO_INTR_DMA_PUSHER;
+	}
+
+	if (stat & NV_PFIFO_INTR_SEMAPHORE) {
+		stat &= ~NV_PFIFO_INTR_SEMAPHORE;
+		nvkm_wr32(device, NV03_PFIFO_INTR_0, NV_PFIFO_INTR_SEMAPHORE);
+
+		sem = nvkm_rd32(device, NV10_PFIFO_CACHE1_SEMAPHORE);
+		nvkm_wr32(device, NV10_PFIFO_CACHE1_SEMAPHORE, sem | 0x1);
+
+		nvkm_wr32(device, NV03_PFIFO_CACHE1_GET, get + 4);
+		nvkm_wr32(device, NV04_PFIFO_CACHE1_PULL0, 1);
+	}
+
+	if (device->card_type == NV_50) {
+		if (stat & 0x00000010) {
+			stat &= ~0x00000010;
+			nvkm_wr32(device, 0x002100, 0x00000010);
+		}
+
+		if (stat & 0x40000000) {
+			nvkm_wr32(device, 0x002100, 0x40000000);
+			nvkm_fifo_uevent(&fifo->base);
+			stat &= ~0x40000000;
+		}
+	}
+
+	if (stat) {
+		nvkm_warn(subdev, "intr %08x\n", stat);
+		nvkm_mask(device, NV03_PFIFO_INTR_EN_0, stat, 0x00000000);
+		nvkm_wr32(device, NV03_PFIFO_INTR_0, stat);
+	}
+
+	nvkm_wr32(device, NV03_PFIFO_CACHES, reassign);
+}
+
+void
+nv04_fifo_init(struct nvkm_fifo *base)
+{
+	struct nv04_fifo *fifo = nv04_fifo(base);
+	struct nvkm_device *device = fifo->base.engine.subdev.device;
+	struct nvkm_instmem *imem = device->imem;
+	struct nvkm_ramht *ramht = imem->ramht;
+	struct nvkm_memory *ramro = imem->ramro;
+	struct nvkm_memory *ramfc = imem->ramfc;
+
+	nvkm_wr32(device, NV04_PFIFO_DELAY_0, 0x000000ff);
+	nvkm_wr32(device, NV04_PFIFO_DMA_TIMESLICE, 0x0101ffff);
+
+	nvkm_wr32(device, NV03_PFIFO_RAMHT, (0x03 << 24) /* search 128 */ |
+					    ((ramht->bits - 9) << 16) |
+					    (ramht->gpuobj->addr >> 8));
+	nvkm_wr32(device, NV03_PFIFO_RAMRO, nvkm_memory_addr(ramro) >> 8);
+	nvkm_wr32(device, NV03_PFIFO_RAMFC, nvkm_memory_addr(ramfc) >> 8);
+
+	nvkm_wr32(device, NV03_PFIFO_CACHE1_PUSH1, fifo->base.nr - 1);
+
+	nvkm_wr32(device, NV03_PFIFO_INTR_0, 0xffffffff);
+	nvkm_wr32(device, NV03_PFIFO_INTR_EN_0, 0xffffffff);
+
+	nvkm_wr32(device, NV03_PFIFO_CACHE1_PUSH0, 1);
+	nvkm_wr32(device, NV04_PFIFO_CACHE1_PULL0, 1);
+	nvkm_wr32(device, NV03_PFIFO_CACHES, 1);
+}
+
+int
+nv04_fifo_new_(const struct nvkm_fifo_func *func, struct nvkm_device *device,
+	       enum nvkm_subdev_type type, int inst, int nr, const struct nv04_fifo_ramfc *ramfc,
+	       struct nvkm_fifo **pfifo)
+{
+	struct nv04_fifo *fifo;
+	int ret;
+
+	if (!(fifo = kzalloc(sizeof(*fifo), GFP_KERNEL)))
+		return -ENOMEM;
+	fifo->ramfc = ramfc;
+	*pfifo = &fifo->base;
+
+	ret = nvkm_fifo_ctor(func, device, type, inst, nr, &fifo->base);
+	if (ret)
+		return ret;
+
+	set_bit(nr - 1, fifo->base.mask); /* inactive channel */
+	return 0;
+}
+
+static const struct nvkm_fifo_func
+nv04_fifo = {
+	.init = nv04_fifo_init,
+	.intr = nv04_fifo_intr,
+	.engine_id = nv04_fifo_engine_id,
+	.id_engine = nv04_fifo_id_engine,
+	.pause = nv04_fifo_pause,
+	.start = nv04_fifo_start,
+	.chan = {
+		&nv04_fifo_dma_oclass,
+		NULL
+	},
+};
+
+int
+nv04_fifo_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
+	      struct nvkm_fifo **pfifo)
+{
+	return nv04_fifo_new_(&nv04_fifo, device, type, inst, 16, nv04_fifo_ramfc, pfifo);
+}