drm/nve0/fifo: initial implementation
authorBen Skeggs <bskeggs@redhat.com>
Thu, 8 Mar 2012 00:41:45 +0000 (10:41 +1000)
committerBen Skeggs <bskeggs@redhat.com>
Thu, 24 May 2012 06:31:39 +0000 (16:31 +1000)
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
drivers/gpu/drm/nouveau/Makefile
drivers/gpu/drm/nouveau/nouveau_drv.h
drivers/gpu/drm/nouveau/nouveau_state.c
drivers/gpu/drm/nouveau/nve0_fifo.c [new file with mode: 0644]

index 01f13351a4732117760d136793cfa34dec3bc2cc..a0e22ef1a7d27f46aebda05d5c2288ae64574583 100644 (file)
@@ -17,6 +17,7 @@ nouveau-y := nouveau_drv.o nouveau_state.o nouveau_channel.o nouveau_mem.o \
              nv04_fb.o nv10_fb.o nv20_fb.o nv30_fb.o nv40_fb.o \
              nv50_fb.o nvc0_fb.o \
              nv04_fifo.o nv10_fifo.o nv40_fifo.o nv50_fifo.o nvc0_fifo.o \
+             nve0_fifo.o \
              nv04_graph.o nv10_graph.o nv20_graph.o \
              nv40_graph.o nv50_graph.o nvc0_graph.o \
              nv40_grctx.o nv50_grctx.o nvc0_grctx.o \
index 92c9a8a648de0969b3b6906f4d5a797cf40f6528..5c4e015692d873a5e68ba2a5eb8f3789970ce182 100644 (file)
@@ -70,7 +70,7 @@ struct nouveau_mem;
 
 #define MAX_NUM_DCB_ENTRIES 16
 
-#define NOUVEAU_MAX_CHANNEL_NR 128
+#define NOUVEAU_MAX_CHANNEL_NR 4096
 #define NOUVEAU_MAX_TILE_NR 15
 
 struct nouveau_mem {
@@ -1260,6 +1260,14 @@ extern void nvc0_fifo_destroy_context(struct nouveau_channel *);
 extern int  nvc0_fifo_load_context(struct nouveau_channel *);
 extern int  nvc0_fifo_unload_context(struct drm_device *);
 
+/* nve0_fifo.c */
+extern int  nve0_fifo_init(struct drm_device *);
+extern void nve0_fifo_takedown(struct drm_device *);
+extern int  nve0_fifo_channel_id(struct drm_device *);
+extern int  nve0_fifo_create_context(struct nouveau_channel *);
+extern void nve0_fifo_destroy_context(struct nouveau_channel *);
+extern int  nve0_fifo_unload_context(struct drm_device *);
+
 /* nv04_graph.c */
 extern int  nv04_graph_create(struct drm_device *);
 extern int  nv04_graph_object_new(struct nouveau_channel *, int, u32, u16);
index 298c09b755697f791c530fc541d559ad0465ca69..64f9d42bfb7a582a9ea0807077f457677156dfbf 100644 (file)
@@ -496,13 +496,17 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
                engine->timer.takedown          = nv04_timer_takedown;
                engine->fb.init                 = nvc0_fb_init;
                engine->fb.takedown             = nvc0_fb_takedown;
-               engine->fifo.channels           = 0;
-               engine->fifo.init               = nouveau_stub_init;
-               engine->fifo.takedown           = nouveau_stub_takedown;
+               engine->fifo.channels           = 4096;
+               engine->fifo.init               = nve0_fifo_init;
+               engine->fifo.takedown           = nve0_fifo_takedown;
                engine->fifo.disable            = nvc0_fifo_disable;
                engine->fifo.enable             = nvc0_fifo_enable;
                engine->fifo.reassign           = nvc0_fifo_reassign;
-               engine->fifo.unload_context     = nouveau_stub_init;
+               engine->fifo.channel_id         = nve0_fifo_channel_id;
+               engine->fifo.create_context     = nve0_fifo_create_context;
+               engine->fifo.destroy_context    = nve0_fifo_destroy_context;
+               engine->fifo.load_context       = nvc0_fifo_load_context;
+               engine->fifo.unload_context     = nve0_fifo_unload_context;
                engine->display.early_init      = nouveau_stub_init;
                engine->display.late_takedown   = nouveau_stub_takedown;
                engine->display.create          = nvd0_display_create;
diff --git a/drivers/gpu/drm/nouveau/nve0_fifo.c b/drivers/gpu/drm/nouveau/nve0_fifo.c
new file mode 100644 (file)
index 0000000..82ad47c
--- /dev/null
@@ -0,0 +1,459 @@
+/*
+ * Copyright 2010 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 "drmP.h"
+
+#include "nouveau_drv.h"
+#include "nouveau_mm.h"
+
+#define NVE0_FIFO_ENGINE_NUM 32
+
+static void nve0_fifo_isr(struct drm_device *);
+
+struct nve0_fifo_engine {
+       struct nouveau_gpuobj *playlist[2];
+       int cur_playlist;
+};
+
+struct nve0_fifo_priv {
+       struct nve0_fifo_engine engine[NVE0_FIFO_ENGINE_NUM];
+       struct {
+               struct nouveau_gpuobj *mem;
+               struct nouveau_vma bar;
+       } user;
+       int spoon_nr;
+};
+
+struct nve0_fifo_chan {
+       struct nouveau_gpuobj *ramfc;
+       u32 engine;
+};
+
+static void
+nve0_fifo_playlist_update(struct drm_device *dev, u32 engine)
+{
+       struct drm_nouveau_private *dev_priv = dev->dev_private;
+       struct nouveau_instmem_engine *pinstmem = &dev_priv->engine.instmem;
+       struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
+       struct nve0_fifo_priv *priv = pfifo->priv;
+       struct nve0_fifo_engine *peng = &priv->engine[engine];
+       struct nouveau_gpuobj *cur;
+       u32 match = (engine << 16) | 0x00000001;
+       int ret, i, p;
+
+       cur = peng->playlist[peng->cur_playlist];
+       if (unlikely(cur == NULL)) {
+               ret = nouveau_gpuobj_new(dev, NULL, 0x8000, 0x1000, 0, &cur);
+               if (ret) {
+                       NV_ERROR(dev, "PFIFO: playlist alloc failed\n");
+                       return;
+               }
+
+               peng->playlist[peng->cur_playlist] = cur;
+       }
+
+       peng->cur_playlist = !peng->cur_playlist;
+
+       for (i = 0, p = 0; i < pfifo->channels; i++) {
+               u32 ctrl = nv_rd32(dev, 0x800004 + (i * 8)) & 0x001f0001;
+               if (ctrl != match)
+                       continue;
+               nv_wo32(cur, p + 0, i);
+               nv_wo32(cur, p + 4, 0x00000000);
+               p += 8;
+       }
+       pinstmem->flush(dev);
+
+       nv_wr32(dev, 0x002270, cur->vinst >> 12);
+       nv_wr32(dev, 0x002274, (engine << 20) | (p >> 3));
+       if (!nv_wait(dev, 0x002284 + (engine * 4), 0x00100000, 0x00000000))
+               NV_ERROR(dev, "PFIFO: playlist %d update timeout\n", engine);
+}
+
+int
+nve0_fifo_channel_id(struct drm_device *dev)
+{
+       return 4095;
+}
+
+int
+nve0_fifo_create_context(struct nouveau_channel *chan)
+{
+       struct drm_device *dev = chan->dev;
+       struct drm_nouveau_private *dev_priv = dev->dev_private;
+       struct nouveau_instmem_engine *pinstmem = &dev_priv->engine.instmem;
+       struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
+       struct nve0_fifo_priv *priv = pfifo->priv;
+       struct nve0_fifo_chan *fifoch;
+       u64 usermem = priv->user.mem->vinst + chan->id * 512;
+       u64 ib_virt = chan->pushbuf_base + chan->dma.ib_base * 4;
+       int ret;
+
+       chan->fifo_priv = kzalloc(sizeof(*fifoch), GFP_KERNEL);
+       if (!chan->fifo_priv)
+               return -ENOMEM;
+       fifoch = chan->fifo_priv;
+       fifoch->engine = 0; /* PGRAPH */
+
+       /* allocate vram for control regs, map into polling area */
+       chan->user = ioremap_wc(pci_resource_start(dev->pdev, 1) +
+                               priv->user.bar.offset + (chan->id * 512), 512);
+       if (!chan->user) {
+               ret = -ENOMEM;
+               goto error;
+       }
+
+       /* ramfc */
+       ret = nouveau_gpuobj_new_fake(dev, chan->ramin->pinst,
+                                     chan->ramin->vinst, 0x100,
+                                     NVOBJ_FLAG_ZERO_ALLOC, &fifoch->ramfc);
+       if (ret)
+               goto error;
+
+       nv_wo32(fifoch->ramfc, 0x08, lower_32_bits(usermem));
+       nv_wo32(fifoch->ramfc, 0x0c, upper_32_bits(usermem));
+       nv_wo32(fifoch->ramfc, 0x10, 0x0000face);
+       nv_wo32(fifoch->ramfc, 0x30, 0xfffff902);
+       nv_wo32(fifoch->ramfc, 0x48, lower_32_bits(ib_virt));
+       nv_wo32(fifoch->ramfc, 0x4c, drm_order(chan->dma.ib_max + 1) << 16 |
+                                    upper_32_bits(ib_virt));
+       nv_wo32(fifoch->ramfc, 0x84, 0x20400000);
+       nv_wo32(fifoch->ramfc, 0x94, 0x30000001);
+       nv_wo32(fifoch->ramfc, 0x9c, 0x00000100);
+       nv_wo32(fifoch->ramfc, 0xac, 0x0000001f);
+       nv_wo32(fifoch->ramfc, 0xe4, 0x00000000);
+       nv_wo32(fifoch->ramfc, 0xe8, chan->id);
+       nv_wo32(fifoch->ramfc, 0xf8, 0x10003080); /* 0x002310 */
+       nv_wo32(fifoch->ramfc, 0xfc, 0x10000010); /* 0x002350 */
+       pinstmem->flush(dev);
+
+       nv_wr32(dev, 0x800000 + (chan->id * 8), 0x80000000 |
+                                               (chan->ramin->vinst >> 12));
+       nv_mask(dev, 0x800004 + (chan->id * 8), 0x00000400, 0x00000400);
+       nve0_fifo_playlist_update(dev, fifoch->engine);
+       nv_mask(dev, 0x800004 + (chan->id * 8), 0x00000400, 0x00000400);
+       return 0;
+
+error:
+       pfifo->destroy_context(chan);
+       return ret;
+}
+
+void
+nve0_fifo_destroy_context(struct nouveau_channel *chan)
+{
+       struct nve0_fifo_chan *fifoch = chan->fifo_priv;
+       struct drm_device *dev = chan->dev;
+
+       if (!fifoch)
+               return;
+
+       nv_mask(dev, 0x800004 + (chan->id * 8), 0x00000800, 0x00000800);
+       nv_wr32(dev, 0x002634, chan->id);
+       if (!nv_wait(dev, 0x0002634, 0xffffffff, chan->id))
+               NV_WARN(dev, "0x2634 != chid: 0x%08x\n", nv_rd32(dev, 0x2634));
+       nve0_fifo_playlist_update(dev, fifoch->engine);
+       nv_wr32(dev, 0x800000 + (chan->id * 8), 0x00000000);
+
+       if (chan->user) {
+               iounmap(chan->user);
+               chan->user = NULL;
+       }
+
+       nouveau_gpuobj_ref(NULL, &fifoch->ramfc);
+       chan->fifo_priv = NULL;
+       kfree(fifoch);
+}
+
+int
+nve0_fifo_load_context(struct nouveau_channel *chan)
+{
+       return 0;
+}
+
+int
+nve0_fifo_unload_context(struct drm_device *dev)
+{
+       struct drm_nouveau_private *dev_priv = dev->dev_private;
+       struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
+       int i;
+
+       for (i = 0; i < pfifo->channels; i++) {
+               if (!(nv_rd32(dev, 0x800004 + (i * 8)) & 1))
+                       continue;
+
+               nv_mask(dev, 0x800004 + (i * 8), 0x00000800, 0x00000800);
+               nv_wr32(dev, 0x002634, i);
+               if (!nv_wait(dev, 0x002634, 0xffffffff, i)) {
+                       NV_INFO(dev, "PFIFO: kick ch %d failed: 0x%08x\n",
+                               i, nv_rd32(dev, 0x002634));
+                       return -EBUSY;
+               }
+       }
+
+       return 0;
+}
+
+static void
+nve0_fifo_destroy(struct drm_device *dev)
+{
+       struct drm_nouveau_private *dev_priv = dev->dev_private;
+       struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
+       struct nve0_fifo_priv *priv;
+       int i;
+
+       priv = pfifo->priv;
+       if (!priv)
+               return;
+
+       nouveau_vm_put(&priv->user.bar);
+       nouveau_gpuobj_ref(NULL, &priv->user.mem);
+
+       for (i = 0; i < NVE0_FIFO_ENGINE_NUM; i++) {
+               nouveau_gpuobj_ref(NULL, &priv->engine[i].playlist[0]);
+               nouveau_gpuobj_ref(NULL, &priv->engine[i].playlist[1]);
+       }
+       kfree(priv);
+}
+
+void
+nve0_fifo_takedown(struct drm_device *dev)
+{
+       nv_wr32(dev, 0x002140, 0x00000000);
+       nve0_fifo_destroy(dev);
+}
+
+static int
+nve0_fifo_create(struct drm_device *dev)
+{
+       struct drm_nouveau_private *dev_priv = dev->dev_private;
+       struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
+       struct nve0_fifo_priv *priv;
+       int ret;
+
+       priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+       if (!priv)
+               return -ENOMEM;
+       pfifo->priv = priv;
+
+       ret = nouveau_gpuobj_new(dev, NULL, pfifo->channels * 512, 0x1000,
+                                NVOBJ_FLAG_ZERO_ALLOC, &priv->user.mem);
+       if (ret)
+               goto error;
+
+       ret = nouveau_vm_get(dev_priv->bar1_vm, priv->user.mem->size,
+                            12, NV_MEM_ACCESS_RW, &priv->user.bar);
+       if (ret)
+               goto error;
+
+       nouveau_vm_map(&priv->user.bar, *(struct nouveau_mem **)priv->user.mem->node);
+
+       nouveau_irq_register(dev, 8, nve0_fifo_isr);
+       return 0;
+
+error:
+       nve0_fifo_destroy(dev);
+       return ret;
+}
+
+int
+nve0_fifo_init(struct drm_device *dev)
+{
+       struct drm_nouveau_private *dev_priv = dev->dev_private;
+       struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
+       struct nouveau_channel *chan;
+       struct nve0_fifo_chan *fifoch;
+       struct nve0_fifo_priv *priv;
+       int ret, i;
+
+       if (!pfifo->priv) {
+               ret = nve0_fifo_create(dev);
+               if (ret)
+                       return ret;
+       }
+       priv = pfifo->priv;
+
+       /* reset PFIFO, enable all available PSUBFIFO areas */
+       nv_mask(dev, 0x000200, 0x00000100, 0x00000000);
+       nv_mask(dev, 0x000200, 0x00000100, 0x00000100);
+       nv_wr32(dev, 0x000204, 0xffffffff);
+
+       priv->spoon_nr = hweight32(nv_rd32(dev, 0x000204));
+       NV_DEBUG(dev, "PFIFO: %d subfifo(s)\n", priv->spoon_nr);
+
+       /* PSUBFIFO[n] */
+       for (i = 0; i < priv->spoon_nr; i++) {
+               nv_mask(dev, 0x04013c + (i * 0x2000), 0x10000100, 0x00000000);
+               nv_wr32(dev, 0x040108 + (i * 0x2000), 0xffffffff); /* INTR */
+               nv_wr32(dev, 0x04010c + (i * 0x2000), 0xfffffeff); /* INTR_EN */
+       }
+
+       nv_wr32(dev, 0x002254, 0x10000000 | priv->user.bar.offset >> 12);
+
+       nv_wr32(dev, 0x002a00, 0xffffffff);
+       nv_wr32(dev, 0x002100, 0xffffffff);
+       nv_wr32(dev, 0x002140, 0xbfffffff);
+
+       /* restore PFIFO context table */
+       for (i = 0; i < pfifo->channels; i++) {
+               chan = dev_priv->channels.ptr[i];
+               if (!chan || !chan->fifo_priv)
+                       continue;
+               fifoch = chan->fifo_priv;
+
+               nv_wr32(dev, 0x800000 + (i * 8), 0x80000000 |
+                                                (chan->ramin->vinst >> 12));
+               nv_mask(dev, 0x800004 + (i * 8), 0x00000400, 0x00000400);
+               nve0_fifo_playlist_update(dev, fifoch->engine);
+               nv_mask(dev, 0x800004 + (i * 8), 0x00000400, 0x00000400);
+       }
+
+       return 0;
+}
+
+struct nouveau_enum nve0_fifo_fault_unit[] = {
+       {}
+};
+
+struct nouveau_enum nve0_fifo_fault_reason[] = {
+       { 0x00, "PT_NOT_PRESENT" },
+       { 0x01, "PT_TOO_SHORT" },
+       { 0x02, "PAGE_NOT_PRESENT" },
+       { 0x03, "VM_LIMIT_EXCEEDED" },
+       { 0x04, "NO_CHANNEL" },
+       { 0x05, "PAGE_SYSTEM_ONLY" },
+       { 0x06, "PAGE_READ_ONLY" },
+       { 0x0a, "COMPRESSED_SYSRAM" },
+       { 0x0c, "INVALID_STORAGE_TYPE" },
+       {}
+};
+
+struct nouveau_enum nve0_fifo_fault_hubclient[] = {
+       {}
+};
+
+struct nouveau_enum nve0_fifo_fault_gpcclient[] = {
+       {}
+};
+
+struct nouveau_bitfield nve0_fifo_subfifo_intr[] = {
+       { 0x00200000, "ILLEGAL_MTHD" },
+       { 0x00800000, "EMPTY_SUBC" },
+       {}
+};
+
+static void
+nve0_fifo_isr_vm_fault(struct drm_device *dev, int unit)
+{
+       u32 inst = nv_rd32(dev, 0x2800 + (unit * 0x10));
+       u32 valo = nv_rd32(dev, 0x2804 + (unit * 0x10));
+       u32 vahi = nv_rd32(dev, 0x2808 + (unit * 0x10));
+       u32 stat = nv_rd32(dev, 0x280c + (unit * 0x10));
+       u32 client = (stat & 0x00001f00) >> 8;
+
+       NV_INFO(dev, "PFIFO: %s fault at 0x%010llx [",
+               (stat & 0x00000080) ? "write" : "read", (u64)vahi << 32 | valo);
+       nouveau_enum_print(nve0_fifo_fault_reason, stat & 0x0000000f);
+       printk("] from ");
+       nouveau_enum_print(nve0_fifo_fault_unit, unit);
+       if (stat & 0x00000040) {
+               printk("/");
+               nouveau_enum_print(nve0_fifo_fault_hubclient, client);
+       } else {
+               printk("/GPC%d/", (stat & 0x1f000000) >> 24);
+               nouveau_enum_print(nve0_fifo_fault_gpcclient, client);
+       }
+       printk(" on channel 0x%010llx\n", (u64)inst << 12);
+}
+
+static void
+nve0_fifo_isr_subfifo_intr(struct drm_device *dev, int unit)
+{
+       u32 stat = nv_rd32(dev, 0x040108 + (unit * 0x2000));
+       u32 addr = nv_rd32(dev, 0x0400c0 + (unit * 0x2000));
+       u32 data = nv_rd32(dev, 0x0400c4 + (unit * 0x2000));
+       u32 chid = nv_rd32(dev, 0x040120 + (unit * 0x2000)) & 0x7f;
+       u32 subc = (addr & 0x00070000);
+       u32 mthd = (addr & 0x00003ffc);
+
+       NV_INFO(dev, "PSUBFIFO %d:", unit);
+       nouveau_bitfield_print(nve0_fifo_subfifo_intr, stat);
+       NV_INFO(dev, "PSUBFIFO %d: ch %d subc %d mthd 0x%04x data 0x%08x\n",
+               unit, chid, subc, mthd, data);
+
+       nv_wr32(dev, 0x0400c0 + (unit * 0x2000), 0x80600008);
+       nv_wr32(dev, 0x040108 + (unit * 0x2000), stat);
+}
+
+static void
+nve0_fifo_isr(struct drm_device *dev)
+{
+       u32 stat = nv_rd32(dev, 0x002100);
+
+       if (stat & 0x00000100) {
+               NV_INFO(dev, "PFIFO: unknown status 0x00000100\n");
+               nv_wr32(dev, 0x002100, 0x00000100);
+               stat &= ~0x00000100;
+       }
+
+       if (stat & 0x10000000) {
+               u32 units = nv_rd32(dev, 0x00259c);
+               u32 u = units;
+
+               while (u) {
+                       int i = ffs(u) - 1;
+                       nve0_fifo_isr_vm_fault(dev, i);
+                       u &= ~(1 << i);
+               }
+
+               nv_wr32(dev, 0x00259c, units);
+               stat &= ~0x10000000;
+       }
+
+       if (stat & 0x20000000) {
+               u32 units = nv_rd32(dev, 0x0025a0);
+               u32 u = units;
+
+               while (u) {
+                       int i = ffs(u) - 1;
+                       nve0_fifo_isr_subfifo_intr(dev, i);
+                       u &= ~(1 << i);
+               }
+
+               nv_wr32(dev, 0x0025a0, units);
+               stat &= ~0x20000000;
+       }
+
+       if (stat & 0x40000000) {
+               NV_INFO(dev, "PFIFO: unknown status 0x40000000\n");
+               nv_mask(dev, 0x002a00, 0x00000000, 0x00000000);
+               stat &= ~0x40000000;
+       }
+
+       if (stat) {
+               NV_INFO(dev, "PFIFO: unhandled status 0x%08x\n", stat);
+               nv_wr32(dev, 0x002100, stat);
+               nv_wr32(dev, 0x002140, 0);
+       }
+}