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/*
* Based on nv40_graph.c
* Someday this will all go away...
*/
#include "drmP.h"
#include "drm.h"
#include "nouveau_drv.h"
#include "nouveau_drm.h"
/*
* TODO: In the dump start seems to be 7654b0 while end is 76ac28.
* This is obviously not the correct size.
*/
#define NV30_GRCTX_SIZE (22392)
/*TODO: deciper what each offset in the context represents. The below
* contexts are taken from dumps just after the 3D object is
* created.
*/
static void nv30_graph_context_init(drm_device_t *dev, struct mem_block *ctx)
{
drm_nouveau_private_t *dev_priv = dev->dev_private;
int i;
INSTANCE_WR(ctx, 0x28/4, 0x10000000);
INSTANCE_WR(ctx, 0x40c/4, 0x00000101);
INSTANCE_WR(ctx, 0x420/4, 0x00000111);
INSTANCE_WR(ctx, 0x424/4, 0x00000060);
INSTANCE_WR(ctx, 0x440/4, 0x00000080);
INSTANCE_WR(ctx, 0x444/4, 0xffff0000);
INSTANCE_WR(ctx, 0x448/4, 0x00000001);
INSTANCE_WR(ctx, 0x45c/4, 0x44400000);
INSTANCE_WR(ctx, 0x448/4, 0xffff0000);
INSTANCE_WR(ctx, 0x4dc/4, 0xfff00000);
INSTANCE_WR(ctx, 0x4e0/4, 0xfff00000);
INSTANCE_WR(ctx, 0x4e8/4, 0x00011100);
for (i = 0x504; i <= 0x540; i += 4)
INSTANCE_WR(ctx, i/4, 0x7ff00000);
INSTANCE_WR(ctx, 0x54c/4, 0x4b7fffff);
INSTANCE_WR(ctx, 0x588/4, 0x00000080);
INSTANCE_WR(ctx, 0x58c/4, 0x30201000);
INSTANCE_WR(ctx, 0x590/4, 0x70605040);
INSTANCE_WR(ctx, 0x594/4, 0xb8a89888);
INSTANCE_WR(ctx, 0x598/4, 0xf8e8d8c8);
INSTANCE_WR(ctx, 0x5ac/4, 0xb0000000);
for (i = 0x604; i <= 0x640; i += 4)
INSTANCE_WR(ctx, i/4, 0x00010588);
for (i = 0x644; i <= 0x680; i += 4)
INSTANCE_WR(ctx, i/4, 0x00030303);
for (i = 0x6c4; i <= 0x700; i += 4)
INSTANCE_WR(ctx, i/4, 0x0008aae4);
for (i = 0x704; i <= 0x740; i += 4)
INSTANCE_WR(ctx, i/4, 0x1012000);
for (i = 0x744; i <= 0x780; i += 4)
INSTANCE_WR(ctx, i/4, 0x0080008);
INSTANCE_WR(ctx, 0x860/4, 0x00040000);
INSTANCE_WR(ctx, 0x864/4, 0x00010000);
INSTANCE_WR(ctx, 0x868/4, 0x00040000);
INSTANCE_WR(ctx, 0x86c/4, 0x00040000);
INSTANCE_WR(ctx, 0x870/4, 0x00040000);
INSTANCE_WR(ctx, 0x874/4, 0x00040000);
for (i = 0x00; i <= 0x1170; i += 0x10)
{
INSTANCE_WR(ctx, (0x1f24 + i)/4, 0x000c001b);
INSTANCE_WR(ctx, (0x1f20 + i)/4, 0x0436086c);
INSTANCE_WR(ctx, (0x1f1c + i)/4, 0x10700ff9);
}
INSTANCE_WR(ctx, 0x30bc/4, 0x0000ffff);
INSTANCE_WR(ctx, 0x30c0/4, 0x0000ffff);
INSTANCE_WR(ctx, 0x30c4/4, 0x0000ffff);
INSTANCE_WR(ctx, 0x30c8/4, 0x0000ffff);
INSTANCE_WR(ctx, 0x380c/4, 0x3f800000);
INSTANCE_WR(ctx, 0x3450/4, 0x3f800000);
INSTANCE_WR(ctx, 0x3820/4, 0x3f800000);
INSTANCE_WR(ctx, 0x3854/4, 0x3f800000);
INSTANCE_WR(ctx, 0x3850/4, 0x3f000000);
INSTANCE_WR(ctx, 0x384c/4, 0x40000000);
INSTANCE_WR(ctx, 0x3868/4, 0xbf800000);
INSTANCE_WR(ctx, 0x3860/4, 0x3f800000);
INSTANCE_WR(ctx, 0x386c/4, 0x40000000);
INSTANCE_WR(ctx, 0x3870/4, 0xbf800000);
for (i = 0x4e0; i <= 0x4e1c; i += 4)
INSTANCE_WR(ctx, i/4, 0x001c527d);
INSTANCE_WR(ctx, 0x4e40, 0x001c527c);
INSTANCE_WR(ctx, 0x5680/4, 0x000a0000);
INSTANCE_WR(ctx, 0x87c/4, 0x10000000);
INSTANCE_WR(ctx, 0x28/4, 0x10000011);
}
int
nv30_graph_context_create(drm_device_t *dev, int channel)
{
drm_nouveau_private_t *dev_priv =
(drm_nouveau_private_t *)dev->dev_private;
struct nouveau_fifo *chan = &dev_priv->fifos[channel];
void (*ctx_init)(drm_device_t *, struct mem_block *);
unsigned int ctx_size;
int i, chipset;
chipset = (NV_READ(NV_PMC_BOOT_0) & 0x0ff00000) >> 20;
switch (chipset) {
default:
ctx_size = NV30_GRCTX_SIZE;
ctx_init = nv30_graph_context_init;
break;
}
/* Alloc and clear RAMIN to store the context */
chan->ramin_grctx = nouveau_instmem_alloc(dev, ctx_size, 4);
if (!chan->ramin_grctx)
return DRM_ERR(ENOMEM);
for (i=0; i<ctx_size; i+=4)
INSTANCE_WR(chan->ramin_grctx, i/4, 0x00000000);
/* Initialise default context values */
ctx_init(dev, chan->ramin_grctx);
return 0;
}
#if 0
/* Save current context (from PGRAPH) into the channel's context
*XXX: fails sometimes, not sure why..
*/
void
nv40_graph_context_save_current(drm_device_t *dev)
{
drm_nouveau_private_t *dev_priv =
(drm_nouveau_private_t *)dev->dev_private;
uint32_t instance;
int i;
NV_WRITE(NV_PGRAPH_FIFO, 0);
instance = NV_READ(0x40032C) & 0xFFFFF;
if (!instance) {
NV_WRITE(NV_PGRAPH_FIFO, 1);
return;
}
NV_WRITE(0x400784, instance);
NV_WRITE(0x400310, NV_READ(0x400310) | 0x20);
NV_WRITE(0x400304, 1);
/* just in case, we don't want to spin in-kernel forever */
for (i=0; i<1000; i++) {
if (NV_READ(0x40030C) == 0)
break;
}
if (i==1000) {
DRM_ERROR("failed to save current grctx to ramin\n");
DRM_ERROR("instance = 0x%08x\n", NV_READ(0x40032C));
DRM_ERROR("0x40030C = 0x%08x\n", NV_READ(0x40030C));
NV_WRITE(NV_PGRAPH_FIFO, 1);
return;
}
NV_WRITE(NV_PGRAPH_FIFO, 1);
}
/* Restore the context for a specific channel into PGRAPH
* XXX: fails sometimes.. not sure why
*/
void
nv40_graph_context_restore(drm_device_t *dev, int channel)
{
drm_nouveau_private_t *dev_priv =
(drm_nouveau_private_t *)dev->dev_private;
struct nouveau_fifo *chan = &dev_priv->fifos[channel];
uint32_t instance;
int i;
instance = nouveau_chip_instance_get(dev, chan->ramin_grctx);
NV_WRITE(NV_PGRAPH_FIFO, 0);
NV_WRITE(0x400784, instance);
NV_WRITE(0x400310, NV_READ(0x400310) | 0x40);
NV_WRITE(0x400304, 1);
/* just in case, we don't want to spin in-kernel forever */
for (i=0; i<1000; i++) {
if (NV_READ(0x40030C) == 0)
break;
}
if (i==1000) {
DRM_ERROR("failed to restore grctx for ch%d to PGRAPH\n",
channel);
DRM_ERROR("instance = 0x%08x\n", instance);
DRM_ERROR("0x40030C = 0x%08x\n", NV_READ(0x40030C));
NV_WRITE(NV_PGRAPH_FIFO, 1);
return;
}
/* 0x40032C, no idea of it's exact function. Could simply be a
* record of the currently active PGRAPH context. It's currently
* unknown as to what bit 24 does. The nv ddx has it set, so we will
* set it here too.
*/
NV_WRITE(0x40032C, instance | 0x01000000);
/* 0x32E0 records the instance address of the active FIFO's PGRAPH
* context. If at any time this doesn't match 0x40032C, you will
* recieve PGRAPH_INTR_CONTEXT_SWITCH
*/
NV_WRITE(NV40_PFIFO_GRCTX_INSTANCE, instance);
NV_WRITE(NV_PGRAPH_FIFO, 1);
}
#endif
int
nv30_graph_init(drm_device_t *dev)
{
drm_nouveau_private_t *dev_priv =
(drm_nouveau_private_t *)dev->dev_private;
int i, chipset;
chipset = (NV_READ(NV_PMC_BOOT_0) & 0x0ff00000) >> 20;
DRM_DEBUG("chipset (from PMC_BOOT_0): NV%02X\n", chipset);
/* Create Context Pointer Table */
dev_priv->ctx_table_size = 32 * 4;
dev_priv->ctx_table = nouveau_instmem_alloc(dev, dev_priv->ctx_table_size, 4);
if (!dev_priv->ctx_table)
return DRM_ERR(ENOMEM);
for (i=0; i< dev_priv->ctx_table_size; i+=4)
INSTANCE_WR(dev_priv->ctx_table, i/4, 0x00000000);
NV_WRITE(NV_PGRAPH_CHANNEL_CTX_TABLE, nouveau_chip_instance_get(dev, dev_priv->ctx_table));
return 0;
}
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