drm/nvc0: implement support for copy engines

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 243 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvc0_copy.c b/drivers/gpu/drm/nouveau/nvc0_copy.c
new file mode 100644
index 000000000000..208fa7ab3f42
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvc0_copy.c
@@ -0,0 +1,243 @@
+/*
+ * Copyright 2011 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 <linux/firmware.h>
+#include "drmP.h"
+#include "nouveau_drv.h"
+#include "nouveau_util.h"
+#include "nouveau_vm.h"
+#include "nouveau_ramht.h"
+#include "nvc0_copy.fuc.h"
+
+struct nvc0_copy_engine {
+	struct nouveau_exec_engine base;
+	u32 irq;
+	u32 pmc;
+	u32 fuc;
+	u32 ctx;
+};
+
+static int
+nvc0_copy_context_new(struct nouveau_channel *chan, int engine)
+{
+	struct nvc0_copy_engine *pcopy = nv_engine(chan->dev, engine);
+	struct drm_device *dev = chan->dev;
+	struct drm_nouveau_private *dev_priv = dev->dev_private;
+	struct nouveau_gpuobj *ramin = chan->ramin;
+	struct nouveau_gpuobj *ctx = NULL;
+	int ret;
+
+	ret = nouveau_gpuobj_new(dev, NULL, 256, 256,
+				 NVOBJ_FLAG_VM | NVOBJ_FLAG_VM_USER |
+				 NVOBJ_FLAG_ZERO_ALLOC, &ctx);
+	if (ret)
+		return ret;
+
+	nv_wo32(ramin, pcopy->ctx + 0, lower_32_bits(ctx->vinst));
+	nv_wo32(ramin, pcopy->ctx + 4, upper_32_bits(ctx->vinst));
+	dev_priv->engine.instmem.flush(dev);
+
+	chan->engctx[engine] = ctx;
+	return 0;
+}
+
+static int
+nvc0_copy_object_new(struct nouveau_channel *chan, int engine,
+		     u32 handle, u16 class)
+{
+	return 0;
+}
+
+static void
+nvc0_copy_context_del(struct nouveau_channel *chan, int engine)
+{
+	struct nvc0_copy_engine *pcopy = nv_engine(chan->dev, engine);
+	struct nouveau_gpuobj *ctx = chan->engctx[engine];
+	struct drm_device *dev = chan->dev;
+	u32 inst;
+
+	inst  = (chan->ramin->vinst >> 12);
+	inst |= 0x40000000;
+
+	/* disable fifo access */
+	nv_wr32(dev, pcopy->fuc + 0x048, 0x00000000);
+	/* mark channel as unloaded if it's currently active */
+	if (nv_rd32(dev, pcopy->fuc + 0x050) == inst)
+		nv_mask(dev, pcopy->fuc + 0x050, 0x40000000, 0x00000000);
+	/* mark next channel as invalid if it's about to be loaded */
+	if (nv_rd32(dev, pcopy->fuc + 0x054) == inst)
+		nv_mask(dev, pcopy->fuc + 0x054, 0x40000000, 0x00000000);
+	/* restore fifo access */
+	nv_wr32(dev, pcopy->fuc + 0x048, 0x00000003);
+
+	nv_wo32(chan->ramin, pcopy->ctx + 0, 0x00000000);
+	nv_wo32(chan->ramin, pcopy->ctx + 4, 0x00000000);
+	nouveau_gpuobj_ref(NULL, &ctx);
+
+	chan->engctx[engine] = ctx;
+}
+
+static int
+nvc0_copy_init(struct drm_device *dev, int engine)
+{
+	struct nvc0_copy_engine *pcopy = nv_engine(dev, engine);
+	int i;
+
+	nv_mask(dev, 0x000200, pcopy->pmc, 0x00000000);
+	nv_mask(dev, 0x000200, pcopy->pmc, pcopy->pmc);
+	nv_wr32(dev, pcopy->fuc + 0x014, 0xffffffff);
+
+	nv_wr32(dev, pcopy->fuc + 0x1c0, 0x01000000);
+	for (i = 0; i < sizeof(nvc0_pcopy_data) / 4; i++)
+		nv_wr32(dev, pcopy->fuc + 0x1c4, nvc0_pcopy_data[i]);
+
+	nv_wr32(dev, pcopy->fuc + 0x180, 0x01000000);
+	for (i = 0; i < sizeof(nvc0_pcopy_code) / 4; i++) {
+		if ((i & 0x3f) == 0)
+			nv_wr32(dev, pcopy->fuc + 0x188, i >> 6);
+		nv_wr32(dev, pcopy->fuc + 0x184, nvc0_pcopy_code[i]);
+	}
+
+	nv_wr32(dev, pcopy->fuc + 0x084, engine - NVOBJ_ENGINE_COPY0);
+	nv_wr32(dev, pcopy->fuc + 0x10c, 0x00000000);
+	nv_wr32(dev, pcopy->fuc + 0x104, 0x00000000); /* ENTRY */
+	nv_wr32(dev, pcopy->fuc + 0x100, 0x00000002); /* TRIGGER */
+	return 0;
+}
+
+static int
+nvc0_copy_fini(struct drm_device *dev, int engine)
+{
+	struct nvc0_copy_engine *pcopy = nv_engine(dev, engine);
+
+	nv_mask(dev, pcopy->fuc + 0x048, 0x00000003, 0x00000000);
+
+	/* trigger fuc context unload */
+	nv_wait(dev, pcopy->fuc + 0x008, 0x0000000c, 0x00000000);
+	nv_mask(dev, pcopy->fuc + 0x054, 0x40000000, 0x00000000);
+	nv_wr32(dev, pcopy->fuc + 0x000, 0x00000008);
+	nv_wait(dev, pcopy->fuc + 0x008, 0x00000008, 0x00000000);
+
+	nv_wr32(dev, pcopy->fuc + 0x014, 0xffffffff);
+	return 0;
+}
+
+static struct nouveau_enum nvc0_copy_isr_error_name[] = {
+	{ 0x0001, "ILLEGAL_MTHD" },
+	{ 0x0002, "INVALID_ENUM" },
+	{ 0x0003, "INVALID_BITFIELD" },
+	{}
+};
+
+static void
+nvc0_copy_isr(struct drm_device *dev, int engine)
+{
+	struct nvc0_copy_engine *pcopy = nv_engine(dev, engine);
+	u32 disp = nv_rd32(dev, pcopy->fuc + 0x01c);
+	u32 stat = nv_rd32(dev, pcopy->fuc + 0x008) & disp & ~(disp >> 16);
+	u64 inst = (u64)(nv_rd32(dev, pcopy->fuc + 0x050) & 0x0fffffff) << 12;
+	u32 chid = nvc0_graph_isr_chid(dev, inst);
+	u32 ssta = nv_rd32(dev, pcopy->fuc + 0x040) & 0x0000ffff;
+	u32 addr = nv_rd32(dev, pcopy->fuc + 0x040) >> 16;
+	u32 mthd = (addr & 0x07ff) << 2;
+	u32 subc = (addr & 0x3800) >> 11;
+	u32 data = nv_rd32(dev, pcopy->fuc + 0x044);
+
+	if (stat & 0x00000040) {
+		NV_INFO(dev, "PCOPY: DISPATCH_ERROR [");
+		nouveau_enum_print(nvc0_copy_isr_error_name, ssta);
+		printk("] ch %d [0x%010llx] subc %d mthd 0x%04x data 0x%08x\n",
+			chid, inst, subc, mthd, data);
+		nv_wr32(dev, pcopy->fuc + 0x004, 0x00000040);
+		stat &= ~0x00000040;
+	}
+
+	if (stat) {
+		NV_INFO(dev, "PCOPY: unhandled intr 0x%08x\n", stat);
+		nv_wr32(dev, pcopy->fuc + 0x004, stat);
+	}
+}
+
+static void
+nvc0_copy_isr_0(struct drm_device *dev)
+{
+	nvc0_copy_isr(dev, NVOBJ_ENGINE_COPY0);
+}
+
+static void
+nvc0_copy_isr_1(struct drm_device *dev)
+{
+	nvc0_copy_isr(dev, NVOBJ_ENGINE_COPY1);
+}
+
+static void
+nvc0_copy_destroy(struct drm_device *dev, int engine)
+{
+	struct nvc0_copy_engine *pcopy = nv_engine(dev, engine);
+
+	nouveau_irq_unregister(dev, pcopy->irq);
+
+	if (engine == NVOBJ_ENGINE_COPY0)
+		NVOBJ_ENGINE_DEL(dev, COPY0);
+	else
+		NVOBJ_ENGINE_DEL(dev, COPY1);
+	kfree(pcopy);
+}
+
+int
+nvc0_copy_create(struct drm_device *dev, int engine)
+{
+	struct nvc0_copy_engine *pcopy;
+
+	pcopy = kzalloc(sizeof(*pcopy), GFP_KERNEL);
+	if (!pcopy)
+		return -ENOMEM;
+
+	pcopy->base.destroy = nvc0_copy_destroy;
+	pcopy->base.init = nvc0_copy_init;
+	pcopy->base.fini = nvc0_copy_fini;
+	pcopy->base.context_new = nvc0_copy_context_new;
+	pcopy->base.context_del = nvc0_copy_context_del;
+	pcopy->base.object_new = nvc0_copy_object_new;
+
+	if (engine == 0) {
+		pcopy->irq = 5;
+		pcopy->pmc = 0x00000040;
+		pcopy->fuc = 0x104000;
+		pcopy->ctx = 0x0230;
+		nouveau_irq_register(dev, pcopy->irq, nvc0_copy_isr_0);
+		NVOBJ_ENGINE_ADD(dev, COPY0, &pcopy->base);
+		NVOBJ_CLASS(dev, 0x90b5, COPY0);
+	} else {
+		pcopy->irq = 6;
+		pcopy->pmc = 0x00000080;
+		pcopy->fuc = 0x105000;
+		pcopy->ctx = 0x0240;
+		nouveau_irq_register(dev, pcopy->irq, nvc0_copy_isr_1);
+		NVOBJ_ENGINE_ADD(dev, COPY1, &pcopy->base);
+		NVOBJ_CLASS(dev, 0x90b8, COPY1);
+	}
+
+	return 0;
+}