diff options
Diffstat (limited to 'shared-core/nv20_graph.c')
| -rw-r--r-- | shared-core/nv20_graph.c | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/shared-core/nv20_graph.c b/shared-core/nv20_graph.c new file mode 100644 index 00000000..6d00effa --- /dev/null +++ b/shared-core/nv20_graph.c @@ -0,0 +1,155 @@ +/* + * Copyright 2007 Matthieu CASTET <castet.matthieu@free.fr> + * All Rights Reserved. + * + * 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 (including the next + * paragraph) 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 + * PRECISION INSIGHT AND/OR ITS SUPPLIERS 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. + */ + +#include "drmP.h" +#include "drm.h" +#include "nouveau_drv.h" +#include "nouveau_drm.h" + +#define NV20_GRCTX_SIZE (3529) + +int nv20_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]; + unsigned int ctx_size = NV20_GRCTX_SIZE; + int i; + + /* 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 */ + INSTANCE_WR(chan->ramin_grctx, 10, channel << 24); /* CTX_USER */ + + INSTANCE_WR(dev_priv->ctx_table, channel, nouveau_chip_instance_get(dev, chan->ramin_grctx)); + + return 0; +} + +static void nv20_graph_rdi(drm_device_t *dev) { + drm_nouveau_private_t *dev_priv = + (drm_nouveau_private_t *)dev->dev_private; + int i; + + NV_WRITE(NV_PGRAPH_RDI_INDEX, 0x2c80000); + for (i = 0; i < 32; i++) + NV_WRITE(NV_PGRAPH_RDI_DATA, 0); + + nouveau_wait_for_idle(dev); +} + +/* Save current context (from PGRAPH) into the channel's context + */ +static void nv20_graph_context_save_current(drm_device_t *dev, int channel) { + drm_nouveau_private_t *dev_priv = + (drm_nouveau_private_t *)dev->dev_private; + uint32_t instance; + + instance = INSTANCE_RD(dev_priv->ctx_table, channel); + if (!instance) { + return; + } + if (instance != nouveau_chip_instance_get(dev, dev_priv->fifos[channel].ramin_grctx)) + DRM_ERROR("nv20_graph_context_save_current : bad instance\n"); + + NV_WRITE(NV_PGRAPH_CHANNEL_CTX_SIZE, instance); + NV_WRITE(NV_PGRAPH_CHANNEL_CTX_POINTER, 2 /* save ctx */); +} + + +/* Restore the context for a specific channel into PGRAPH + */ +static void nv20_graph_context_restore(drm_device_t *dev, int channel) { + drm_nouveau_private_t *dev_priv = + (drm_nouveau_private_t *)dev->dev_private; + uint32_t instance; + + instance = INSTANCE_RD(dev_priv->ctx_table, channel); + if (!instance) { + return; + } + if (instance != nouveau_chip_instance_get(dev, dev_priv->fifos[channel].ramin_grctx)) + DRM_ERROR("nv20_graph_context_restore_current : bad instance\n"); + + NV_WRITE(NV_PGRAPH_CTX_USER, channel << 24); + NV_WRITE(NV_PGRAPH_CHANNEL_CTX_SIZE, instance); + NV_WRITE(NV_PGRAPH_CHANNEL_CTX_POINTER, 1 /* restore ctx */); +} + +void nouveau_nv20_context_switch(drm_device_t *dev) +{ + drm_nouveau_private_t *dev_priv = dev->dev_private; + int channel, channel_old; + + channel=NV_READ(NV_PFIFO_CACH1_PSH1)&(nouveau_fifo_number(dev)-1); + channel_old = (NV_READ(NV_PGRAPH_CTX_USER) >> 24) & (nouveau_fifo_number(dev)-1); + + DRM_INFO("NV: PGRAPH context switch interrupt channel %x -> %x\n",channel_old, channel); + + NV_WRITE(NV_PGRAPH_FIFO,0x0); + + nv20_graph_context_save_current(dev, channel_old); + + nouveau_wait_for_idle(dev); + + NV_WRITE(NV_PGRAPH_CTX_CONTROL, 0x10000000); + + nv20_graph_context_restore(dev, channel_old); + + nouveau_wait_for_idle(dev); + + if ((NV_READ(NV_PGRAPH_CTX_USER) >> 24) != channel) + DRM_ERROR("nouveau_nv20_context_switch : wrong channel restored %x %x!!!\n", channel, NV_READ(NV_PGRAPH_CTX_USER) >> 24); + + NV_WRITE(NV_PGRAPH_CTX_CONTROL, 0x10010100); + NV_WRITE(NV_PGRAPH_FFINTFC_ST2, NV_READ(NV_PGRAPH_FFINTFC_ST2)&0xCFFFFFFF); + + NV_WRITE(NV_PGRAPH_FIFO,0x1); +} + +int nv20_graph_init(drm_device_t *dev) { + drm_nouveau_private_t *dev_priv = + (drm_nouveau_private_t *)dev->dev_private; + int i; + + /* 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)); + + //XXX need to be done and save/restore for each fifo ??? + nv20_graph_rdi(dev); + + return 0; +} |