- 根目录:
- drivers
- gpu
- drm
- nouveau
- nv40_mpeg.c
/*
* 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 "drmP.h"
#include "nouveau_drv.h"
#include "nouveau_ramht.h"
struct nv40_mpeg_engine {
struct nouveau_exec_engine base;
};
static int
nv40_mpeg_context_new(struct nouveau_channel *chan, int engine)
{
struct drm_device *dev = chan->dev;
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_gpuobj *ctx = NULL;
unsigned long flags;
int ret;
NV_DEBUG(dev, "ch%d\n", chan->id);
ret = nouveau_gpuobj_new(dev, NULL, 264 * 4, 16, NVOBJ_FLAG_ZERO_ALLOC |
NVOBJ_FLAG_ZERO_FREE, &ctx);
if (ret)
return ret;
nv_wo32(ctx, 0x78, 0x02001ec1);
spin_lock_irqsave(&dev_priv->context_switch_lock, flags);
nv_mask(dev, 0x002500, 0x00000001, 0x00000000);
if ((nv_rd32(dev, 0x003204) & 0x1f) == chan->id)
nv_wr32(dev, 0x00330c, ctx->pinst >> 4);
nv_wo32(chan->ramfc, 0x54, ctx->pinst >> 4);
nv_mask(dev, 0x002500, 0x00000001, 0x00000001);
spin_unlock_irqrestore(&dev_priv->context_switch_lock, flags);
chan->engctx[engine] = ctx;
return 0;
}
static void
nv40_mpeg_context_del(struct nouveau_channel *chan, int engine)
{
struct drm_nouveau_private *dev_priv = chan->dev->dev_private;
struct nouveau_gpuobj *ctx = chan->engctx[engine];
struct drm_device *dev = chan->dev;
unsigned long flags;
u32 inst = 0x80000000 | (ctx->pinst >> 4);
spin_lock_irqsave(&dev_priv->context_switch_lock, flags);
nv_mask(dev, 0x00b32c, 0x00000001, 0x00000000);
if (nv_rd32(dev, 0x00b318) == inst)
nv_mask(dev, 0x00b318, 0x80000000, 0x00000000);
nv_mask(dev, 0x00b32c, 0x00000001, 0x00000001);
spin_unlock_irqrestore(&dev_priv->context_switch_lock, flags);
nouveau_gpuobj_ref(NULL, &ctx);
chan->engctx[engine] = NULL;
}
static int
nv40_mpeg_object_new(struct nouveau_channel *chan, int engine,
u32 handle, u16 class)
{
struct drm_device *dev = chan->dev;
struct nouveau_gpuobj *obj = NULL;
int ret;
ret = nouveau_gpuobj_new(dev, chan, 20, 16, NVOBJ_FLAG_ZERO_ALLOC |
NVOBJ_FLAG_ZERO_FREE, &obj);
if (ret)
return ret;
obj->engine = 2;
obj->class = class;
nv_wo32(obj, 0x00, class);
ret = nouveau_ramht_insert(chan, handle, obj);
nouveau_gpuobj_ref(NULL, &obj);
return ret;
}
static int
nv40_mpeg_init(struct drm_device *dev, int engine)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nv40_mpeg_engine *pmpeg = nv_engine(dev, engine);
int i;
/* VPE init */
nv_mask(dev, 0x000200, 0x00000002, 0x00000000);
nv_mask(dev, 0x000200, 0x00000002, 0x00000002);
nv_wr32(dev, 0x00b0e0, 0x00000020); /* nvidia: rd 0x01, wr 0x20 */
nv_wr32(dev, 0x00b0e8, 0x00000020); /* nvidia: rd 0x01, wr 0x20 */
for (i = 0; i < dev_priv->engine.fb.num_tiles; i++)
pmpeg->base.set_tile_region(dev, i);
/* PMPEG init */
nv_wr32(dev, 0x00b32c, 0x00000000);
nv_wr32(dev, 0x00b314, 0x00000100);
nv_wr32(dev, 0x00b220, 0x00000044);
nv_wr32(dev, 0x00b300, 0x02001ec1);
nv_mask(dev, 0x00b32c, 0x00000001, 0x00000001);
nv_wr32(dev, 0x00b100, 0xffffffff);
nv_wr32(dev, 0x00b140, 0xffffffff);
if (!nv_wait(dev, 0x00b200, 0x00000001, 0x00000000)) {
NV_ERROR(dev, "PMPEG init: 0x%08x\n", nv_rd32(dev, 0x00b200));
return -EBUSY;
}
return 0;
}
static int
nv40_mpeg_fini(struct drm_device *dev, int engine)
{
/*XXX: context save? */
nv_mask(dev, 0x00b32c, 0x00000001, 0x00000000);
nv_wr32(dev, 0x00b140, 0x00000000);
return 0;
}
static int
nv40_mpeg_mthd_dma(struct nouveau_channel *chan, u32 class, u32 mthd, u32 data)
{
struct drm_device *dev = chan->dev;
u32 inst = data << 4;
u32 dma0 = nv_ri32(dev, inst + 0);
u32 dma1 = nv_ri32(dev, inst + 4);
u32 dma2 = nv_ri32(dev, inst + 8);
u32 base = (dma2 & 0xfffff000) | (dma0 >> 20);
u32 size = dma1 + 1;
/* only allow linear DMA objects */
if (!(dma0 & 0x00002000))
return -EINVAL;
if (mthd == 0x0190) {
/* DMA_CMD */
nv_mask(dev, 0x00b300, 0x00030000, (dma0 & 0x00030000));
nv_wr32(dev, 0x00b334, base);
nv_wr32(dev, 0x00b324, size);
} else
if (mthd == 0x01a0) {
/* DMA_DATA */
nv_mask(dev, 0x00b300, 0x000c0000, (dma0 & 0x00030000) << 2);
nv_wr32(dev, 0x00b360, base);
nv_wr32(dev, 0x00b364, size);
} else {
/* DMA_IMAGE, VRAM only */
if (dma0 & 0x000c0000)
return -EINVAL;
nv_wr32(dev, 0x00b370, base);
nv_wr32(dev, 0x00b374, size);
}
return 0;
}
static int
nv40_mpeg_isr_chid(struct drm_device *dev, u32 inst)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_gpuobj *ctx;
unsigned long flags;
int i;
spin_lock_irqsave(&dev_priv->channels.lock, flags);
for (i = 0; i < dev_priv->engine.fifo.channels; i++) {
if (!dev_priv->channels.ptr[i])
continue;
ctx = dev_priv->channels.ptr[i]->engctx[NVOBJ_ENGINE_MPEG];
if (ctx && ctx->pinst == inst)
break;
}
spin_unlock_irqrestore(&dev_priv->channels.lock, flags);
return i;
}
static void
nv40_vpe_set_tile_region(struct drm_device *dev, int i)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_tile_reg *tile = &dev_priv->tile.reg[i];
nv_wr32(dev, 0x00b008 + (i * 0x10), tile->pitch);
nv_wr32(dev, 0x00b004 + (i * 0x10), tile->limit);
nv_wr32(dev, 0x00b000 + (i * 0x10), tile->addr);
}
static void
nv40_mpeg_isr(struct drm_device *dev)
{
u32 inst = (nv_rd32(dev, 0x00b318) & 0x000fffff) << 4;
u32 chid = nv40_mpeg_isr_chid(dev, inst);
u32 stat = nv_rd32(dev, 0x00b100);
u32 type = nv_rd32(dev, 0x00b230);
u32 mthd = nv_rd32(dev, 0x00b234);
u32 data = nv_rd32(dev, 0x00b238);
u32 show = stat;
if (stat & 0x01000000) {
/* happens on initial binding of the object */
if (type == 0x00000020 && mthd == 0x0000) {
nv_mask(dev, 0x00b308, 0x00000000, 0x00000000);
show &= ~0x01000000;
}
if (type == 0x00000010) {
if (!nouveau_gpuobj_mthd_call2(dev, chid, 0x3174, mthd, data))
show &= ~0x01000000;
}
}
nv_wr32(dev, 0x00b100, stat);
nv_wr32(dev, 0x00b230, 0x00000001);
if (show && nouveau_ratelimit()) {
NV_INFO(dev, "PMPEG: Ch %d [0x%08x] 0x%08x 0x%08x 0x%08x 0x%08x\n",
chid, inst, stat, type, mthd, data);
}
}
static void
nv40_vpe_isr(struct drm_device *dev)
{
if (nv_rd32(dev, 0x00b100))
nv40_mpeg_isr(dev);
if (nv_rd32(dev, 0x00b800)) {
u32 stat = nv_rd32(dev, 0x00b800);
NV_INFO(dev, "PMSRCH: 0x%08x\n", stat);
nv_wr32(dev, 0xb800, stat);
}
}
static void
nv40_mpeg_destroy(struct drm_device *dev, int engine)
{
struct nv40_mpeg_engine *pmpeg = nv_engine(dev, engine);
nouveau_irq_unregister(dev, 0);
NVOBJ_ENGINE_DEL(dev, MPEG);
kfree(pmpeg);
}
int
nv40_mpeg_create(struct drm_device *dev)
{
struct nv40_mpeg_engine *pmpeg;
pmpeg = kzalloc(sizeof(*pmpeg), GFP_KERNEL);
if (!pmpeg)
return -ENOMEM;
pmpeg->base.destroy = nv40_mpeg_destroy;
pmpeg->base.init = nv40_mpeg_init;
pmpeg->base.fini = nv40_mpeg_fini;
pmpeg->base.context_new = nv40_mpeg_context_new;
pmpeg->base.context_del = nv40_mpeg_context_del;
pmpeg->base.object_new = nv40_mpeg_object_new;
/* ISR vector, PMC_ENABLE bit, and TILE regs are shared between
* all VPE engines, for this driver's purposes the PMPEG engine
* will be treated as the "master" and handle the global VPE
* bits too
*/
pmpeg->base.set_tile_region = nv40_vpe_set_tile_region;
nouveau_irq_register(dev, 0, nv40_vpe_isr);
NVOBJ_ENGINE_ADD(dev, MPEG, &pmpeg->base);
NVOBJ_CLASS(dev, 0x3174, MPEG);
NVOBJ_MTHD (dev, 0x3174, 0x0190, nv40_mpeg_mthd_dma);
NVOBJ_MTHD (dev, 0x3174, 0x01a0, nv40_mpeg_mthd_dma);
NVOBJ_MTHD (dev, 0x3174, 0x01b0, nv40_mpeg_mthd_dma);
#if 0
NVOBJ_ENGINE_ADD(dev, ME, &pme->base);
NVOBJ_CLASS(dev, 0x4075, ME);
#endif
return 0;
}