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drm/shared-core/nouveau_fifo.c

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/*
* Copyright 2005-2006 Stephane Marchesin
* 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"
/* returns the number of hw fifos */
int nouveau_fifo_number(drm_device_t* dev)
{
drm_nouveau_private_t *dev_priv=dev->dev_private;
switch(dev_priv->card_type)
{
case NV_03:
return 8;
case NV_04:
case NV_05:
return 16;
default:
return 32;
}
}
/* returns the size of fifo context */
static int nouveau_fifo_ctx_size(drm_device_t* dev)
{
drm_nouveau_private_t *dev_priv=dev->dev_private;
if (dev_priv->card_type >= NV_40)
return 128;
else if (dev_priv->card_type >= NV_10)
return 64;
else
return 32;
}
/***********************************
* functions doing the actual work
***********************************/
/* voir nv_xaa.c : NVResetGraphics
* mémoire mappée par nv_driver.c : NVMapMem
* voir nv_driver.c : NVPreInit
*/
static int nouveau_fifo_instmem_configure(drm_device_t *dev)
{
drm_nouveau_private_t *dev_priv = dev->dev_private;
int i;
/* Clear start of RAMIN, enough to cover RAMFC/HT/RO basically */
for (i=0x00710000; i<0x00730000; i++)
NV_WRITE(i, 0x00000000);
/* FIFO hash table (RAMHT)
* use 4k hash table at RAMIN+0x10000
* TODO: extend the hash table
*/
dev_priv->ramht_offset = 0x10000;
dev_priv->ramht_bits = 9;
dev_priv->ramht_size = (1 << dev_priv->ramht_bits);
NV_WRITE(NV_PFIFO_RAMHT,
(0x03 << 24) /* search 128 */ |
((dev_priv->ramht_bits - 9) << 16) |
(dev_priv->ramht_offset >> 8)
);
DRM_DEBUG("RAMHT offset=0x%x, size=%d\n",
dev_priv->ramht_offset,
dev_priv->ramht_size);
/* FIFO runout table (RAMRO) - 512k at 0x11200 */
dev_priv->ramro_offset = 0x11200;
dev_priv->ramro_size = 512;
NV_WRITE(NV_PFIFO_RAMRO, dev_priv->ramro_offset>>8);
DRM_DEBUG("RAMRO offset=0x%x, size=%d\n",
dev_priv->ramro_offset,
dev_priv->ramro_size);
/* FIFO context table (RAMFC)
* NV40 : Not sure exactly how to position RAMFC on some cards,
* 0x30002 seems to position it at RAMIN+0x20000 on these
* cards. RAMFC is 4kb (32 fifos, 128byte entries).
* Others: Position RAMFC at RAMIN+0x11400
*/
switch(dev_priv->card_type)
{
case NV_50:
case NV_40:
dev_priv->ramfc_offset = 0x20000;
dev_priv->ramfc_size = nouveau_fifo_number(dev) * nouveau_fifo_ctx_size(dev);
NV_WRITE(NV40_PFIFO_RAMFC, 0x30002);
break;
case NV_44:
dev_priv->ramfc_offset = 0x20000;
dev_priv->ramfc_size = nouveau_fifo_number(dev) * nouveau_fifo_ctx_size(dev);
NV_WRITE(NV40_PFIFO_RAMFC, ((nouveau_mem_fb_amount(dev)-512*1024+dev_priv->ramfc_offset)>>16) |
(2 << 16));
break;
case NV_30:
case NV_20:
case NV_10:
dev_priv->ramfc_offset = 0x11400;
dev_priv->ramfc_size = nouveau_fifo_number(dev) * nouveau_fifo_ctx_size(dev);
NV_WRITE(NV_PFIFO_RAMFC, (dev_priv->ramfc_offset>>8) |
(1 << 16) /* 64 Bytes entry*/);
break;
case NV_04:
case NV_03:
dev_priv->ramfc_offset = 0x11400;
dev_priv->ramfc_size = nouveau_fifo_number(dev) * nouveau_fifo_ctx_size(dev);
NV_WRITE(NV_PFIFO_RAMFC, dev_priv->ramfc_offset>>8);
break;
}
DRM_DEBUG("RAMFC offset=0x%x, size=%d\n",
dev_priv->ramfc_offset,
dev_priv->ramfc_size);
if (nouveau_instmem_init(dev, dev_priv->ramfc_offset +
dev_priv->ramfc_size))
return 1;
return 0;
}
int nouveau_fifo_init(drm_device_t *dev)
{
drm_nouveau_private_t *dev_priv = dev->dev_private;
int ret;
NV_WRITE(NV_PFIFO_CACHES, 0x00000000);
ret = nouveau_fifo_instmem_configure(dev);
if (ret) {
DRM_ERROR("Failed to configure instance memory\n");
return ret;
}
/* FIXME remove all the stuff that's done in nouveau_fifo_alloc */
DRM_DEBUG("Setting defaults for remaining PFIFO regs\n");
/* All channels into PIO mode */
NV_WRITE(NV_PFIFO_MODE, 0x00000000);
NV_WRITE(NV_PFIFO_CACH1_PSH0, 0x00000000);
NV_WRITE(NV_PFIFO_CACH1_PUL0, 0x00000000);
/* Channel 0 active, PIO mode */
NV_WRITE(NV_PFIFO_CACH1_PSH1, 0x00000000);
/* PUT and GET to 0 */
NV_WRITE(NV_PFIFO_CACH1_DMAP, 0x00000000);
NV_WRITE(NV_PFIFO_CACH1_DMAP, 0x00000000);
/* No cmdbuf object */
NV_WRITE(NV_PFIFO_CACH1_DMAI, 0x00000000);
NV_WRITE(NV_PFIFO_CACH0_PSH0, 0x00000000);
NV_WRITE(NV_PFIFO_CACH0_PUL0, 0x00000000);
NV_WRITE(NV_PFIFO_SIZE, 0x0000FFFF);
NV_WRITE(NV_PFIFO_CACH1_HASH, 0x0000FFFF);
NV_WRITE(NV_PFIFO_CACH0_PUL1, 0x00000001);
NV_WRITE(NV_PFIFO_CACH1_DMAC, 0x00000000);
NV_WRITE(NV_PFIFO_CACH1_DMAS, 0x00000000);
NV_WRITE(NV_PFIFO_CACH1_ENG, 0x00000000);
NV_WRITE(NV_PFIFO_CACH1_DMAF, NV_PFIFO_CACH1_DMAF_TRIG_112_BYTES |
NV_PFIFO_CACH1_DMAF_SIZE_128_BYTES |
NV_PFIFO_CACH1_DMAF_MAX_REQS_4 |
#ifdef __BIG_ENDIAN
NV_PFIFO_CACH1_BIG_ENDIAN |
#endif
0x00000000);
NV_WRITE(NV_PFIFO_CACH1_DMAPSH, 0x00000001);
NV_WRITE(NV_PFIFO_CACH1_PSH0, 0x00000001);
NV_WRITE(NV_PFIFO_CACH1_PUL0, 0x00000001);
NV_WRITE(NV_PFIFO_CACH1_PUL1, 0x00000001);
NV_WRITE(NV_PGRAPH_CTX_USER, 0x0);
NV_WRITE(NV_PFIFO_DELAY_0, 0xff /* retrycount*/ );
if (dev_priv->card_type >= NV_40)
NV_WRITE(NV_PGRAPH_CTX_CONTROL, 0x00002001);
else
NV_WRITE(NV_PGRAPH_CTX_CONTROL, 0x10110000);
NV_WRITE(NV_PFIFO_DMA_TIMESLICE, 0x001fffff);
NV_WRITE(NV_PFIFO_CACHES, 0x00000001);
return 0;
}
static int
nouveau_fifo_cmdbuf_alloc(struct drm_device *dev, int channel)
{
drm_nouveau_private_t *dev_priv = dev->dev_private;
struct nouveau_config *config = &dev_priv->config;
struct mem_block *cb;
struct nouveau_object *cb_dma = NULL;
int cb_min_size = max(NV03_FIFO_SIZE,PAGE_SIZE);
/* Defaults for unconfigured values */
if (!config->cmdbuf.location)
config->cmdbuf.location = NOUVEAU_MEM_FB;
if (!config->cmdbuf.size || config->cmdbuf.size < cb_min_size)
config->cmdbuf.size = cb_min_size;
cb = nouveau_mem_alloc(dev, 0, config->cmdbuf.size,
config->cmdbuf.location | NOUVEAU_MEM_MAPPED,
(DRMFILE)-2);
if (!cb) {
DRM_ERROR("Couldn't allocate DMA command buffer.\n");
return DRM_ERR(ENOMEM);
}
if (cb->flags & NOUVEAU_MEM_AGP) {
cb_dma = nouveau_dma_object_create(dev,
cb->start, cb->size,
NV_DMA_ACCESS_RO, NV_DMA_TARGET_AGP);
} else if (dev_priv->card_type != NV_04) {
cb_dma = nouveau_dma_object_create(dev,
cb->start - drm_get_resource_start(dev, 1),
cb->size,
NV_DMA_ACCESS_RO, NV_DMA_TARGET_VIDMEM);
} else {
/* NV04 cmdbuf hack, from original ddx.. not sure of it's
* exact reason for existing :) PCI access to cmdbuf in
* VRAM.
*/
cb_dma = nouveau_dma_object_create(dev,
cb->start, cb->size,
NV_DMA_ACCESS_RO, NV_DMA_TARGET_PCI);
}
if (!cb_dma) {
nouveau_mem_free(dev, cb);
DRM_ERROR("Failed to alloc DMA object for command buffer\n");
return DRM_ERR(ENOMEM);
}
dev_priv->fifos[channel].cmdbuf_mem = cb;
dev_priv->fifos[channel].cmdbuf_obj = cb_dma;
return 0;
}
#define RAMFC_WR(offset, val) NV_WRITE(fifoctx + NV04_RAMFC_##offset, (val))
static void nouveau_nv04_context_init(drm_device_t *dev,
drm_nouveau_fifo_alloc_t *init)
{
drm_nouveau_private_t *dev_priv = dev->dev_private;
struct nouveau_object *cb_obj;
uint32_t fifoctx, ctx_size = 32;
int i;
cb_obj = dev_priv->fifos[init->channel].cmdbuf_obj;
fifoctx=NV_RAMIN+dev_priv->ramfc_offset+init->channel*ctx_size;
// clear the fifo context
for(i=0;i<ctx_size/4;i++)
NV_WRITE(fifoctx+4*i,0x0);
RAMFC_WR(DMA_PUT , init->put_base);
RAMFC_WR(DMA_GET , init->put_base);
RAMFC_WR(DMA_INSTANCE , nouveau_chip_instance_get(dev, cb_obj->instance));
RAMFC_WR(DMA_FETCH, NV_PFIFO_CACH1_DMAF_TRIG_112_BYTES |
NV_PFIFO_CACH1_DMAF_SIZE_128_BYTES |
NV_PFIFO_CACH1_DMAF_MAX_REQS_4 |
#ifdef __BIG_ENDIAN
NV_PFIFO_CACH1_BIG_ENDIAN |
#endif
0x00000000);
}
#undef RAMFC_WR
#define RAMFC_WR(offset, val) NV_WRITE(fifoctx + NV10_RAMFC_##offset, (val))
static void nouveau_nv10_context_init(drm_device_t *dev,
drm_nouveau_fifo_alloc_t *init)
{
drm_nouveau_private_t *dev_priv = dev->dev_private;
struct nouveau_object *cb_obj;
uint32_t fifoctx;
int i;
cb_obj = dev_priv->fifos[init->channel].cmdbuf_obj;
fifoctx = NV_RAMIN + dev_priv->ramfc_offset + init->channel*64;
for (i=0;i<64;i+=4)
NV_WRITE(fifoctx + i, 0);
/* Fill entries that are seen filled in dumps of nvidia driver just
* after channel's is put into DMA mode
*/
RAMFC_WR(DMA_PUT , init->put_base);
RAMFC_WR(DMA_GET , init->put_base);
RAMFC_WR(DMA_INSTANCE , nouveau_chip_instance_get(dev,
cb_obj->instance));
RAMFC_WR(DMA_FETCH, NV_PFIFO_CACH1_DMAF_TRIG_112_BYTES |
NV_PFIFO_CACH1_DMAF_SIZE_128_BYTES |
NV_PFIFO_CACH1_DMAF_MAX_REQS_4 |
#ifdef __BIG_ENDIAN
NV_PFIFO_CACH1_BIG_ENDIAN |
#endif
0x00000000);
}
static void nouveau_nv30_context_init(drm_device_t *dev,
drm_nouveau_fifo_alloc_t *init)
{
drm_nouveau_private_t *dev_priv = dev->dev_private;
struct nouveau_fifo *chan = &dev_priv->fifos[init->channel];
struct nouveau_object *cb_obj;
uint32_t fifoctx, grctx_inst, cb_inst, ctx_size = 64;
int i;
cb_obj = dev_priv->fifos[init->channel].cmdbuf_obj;
cb_inst = nouveau_chip_instance_get(dev, chan->cmdbuf_obj->instance);
grctx_inst = nouveau_chip_instance_get(dev, chan->ramin_grctx);
fifoctx = NV_RAMIN + dev_priv->ramfc_offset + init->channel * ctx_size;
for (i = 0; i < ctx_size; i += 4)
NV_WRITE(fifoctx + i, 0);
RAMFC_WR(DMA_PUT, init->put_base);
RAMFC_WR(DMA_GET, init->put_base);
RAMFC_WR(REF_CNT, NV_READ(NV_PFIFO_CACH1_REF_CNT));
RAMFC_WR(DMA_INSTANCE, cb_inst);
RAMFC_WR(DMA_STATE, NV_READ(NV_PFIFO_CACH1_DMAS));
RAMFC_WR(DMA_FETCH, NV_PFIFO_CACH1_DMAF_TRIG_128_BYTES |
NV_PFIFO_CACH1_DMAF_SIZE_128_BYTES |
NV_PFIFO_CACH1_DMAF_MAX_REQS_8 |
#ifdef __BIG_ENDIAN
NV_PFIFO_CACH1_BIG_ENDIAN |
#endif
0x00000000);
RAMFC_WR(ENGINE, NV_READ(NV_PFIFO_CACH1_ENG));
RAMFC_WR(PULL1_ENGINE, NV_READ(NV_PFIFO_CACH1_PUL1));
RAMFC_WR(ACQUIRE_VALUE, NV_READ(NV_PFIFO_CACH1_ACQUIRE_VALUE));
RAMFC_WR(ACQUIRE_TIMESTAMP, NV_READ(NV_PFIFO_CACH1_ACQUIRE_TIMESTAMP));
RAMFC_WR(ACQUIRE_TIMEOUT, NV_READ(NV_PFIFO_CACH1_ACQUIRE_TIMEOUT));
RAMFC_WR(SEMAPHORE, NV_READ(NV_PFIFO_CACH1_SEMAPHORE));
RAMFC_WR(DMA_SUBROUTINE, init->put_base);
}
static void nouveau_nv10_context_save(drm_device_t *dev)
{
drm_nouveau_private_t *dev_priv = dev->dev_private;
uint32_t fifoctx;
int channel;
channel = NV_READ(NV_PFIFO_CACH1_PSH1) & (nouveau_fifo_number(dev)-1);
fifoctx = NV_RAMIN + dev_priv->ramfc_offset + channel*64;
RAMFC_WR(DMA_PUT , NV_READ(NV_PFIFO_CACH1_DMAP));
RAMFC_WR(DMA_GET , NV_READ(NV_PFIFO_CACH1_DMAG));
RAMFC_WR(REF_CNT , NV_READ(NV_PFIFO_CACH1_REF_CNT));
RAMFC_WR(DMA_INSTANCE , NV_READ(NV_PFIFO_CACH1_DMAI));
RAMFC_WR(DMA_STATE , NV_READ(NV_PFIFO_CACH1_DMAS));
RAMFC_WR(DMA_FETCH , NV_READ(NV_PFIFO_CACH1_DMAF));
RAMFC_WR(ENGINE , NV_READ(NV_PFIFO_CACH1_ENG));
RAMFC_WR(PULL1_ENGINE , NV_READ(NV_PFIFO_CACH1_PUL1));
RAMFC_WR(ACQUIRE_VALUE , NV_READ(NV_PFIFO_CACH1_ACQUIRE_VALUE));
RAMFC_WR(ACQUIRE_TIMESTAMP, NV_READ(NV_PFIFO_CACH1_ACQUIRE_TIMESTAMP));
RAMFC_WR(ACQUIRE_TIMEOUT , NV_READ(NV_PFIFO_CACH1_ACQUIRE_TIMEOUT));
RAMFC_WR(SEMAPHORE , NV_READ(NV_PFIFO_CACH1_SEMAPHORE));
RAMFC_WR(DMA_SUBROUTINE , NV_READ(NV_PFIFO_CACH1_DMASR));
}
#undef RAMFC_WR
#define RAMFC_WR(offset, val) NV_WRITE(fifoctx + NV40_RAMFC_##offset, (val))
static void nouveau_nv40_context_init(drm_device_t *dev,
drm_nouveau_fifo_alloc_t *init)
{
drm_nouveau_private_t *dev_priv = dev->dev_private;
struct nouveau_fifo *chan = &dev_priv->fifos[init->channel];
uint32_t fifoctx, cb_inst, grctx_inst;
int i;
cb_inst = nouveau_chip_instance_get(dev, chan->cmdbuf_obj->instance);
grctx_inst = nouveau_chip_instance_get(dev, chan->ramin_grctx);
fifoctx = NV_RAMIN + dev_priv->ramfc_offset + init->channel*128;
for (i=0;i<128;i+=4)
NV_WRITE(fifoctx + i, 0);
/* Fill entries that are seen filled in dumps of nvidia driver just
* after channel's is put into DMA mode
*/
RAMFC_WR(DMA_PUT , init->put_base);
RAMFC_WR(DMA_GET , init->put_base);
RAMFC_WR(DMA_INSTANCE , cb_inst);
RAMFC_WR(DMA_FETCH , NV_PFIFO_CACH1_DMAF_TRIG_128_BYTES |
NV_PFIFO_CACH1_DMAF_SIZE_128_BYTES |
NV_PFIFO_CACH1_DMAF_MAX_REQS_8 |
#ifdef __BIG_ENDIAN
NV_PFIFO_CACH1_BIG_ENDIAN |
#endif
0x30000000 /* no idea.. */);
RAMFC_WR(DMA_SUBROUTINE, init->put_base);
RAMFC_WR(GRCTX_INSTANCE, grctx_inst);
RAMFC_WR(DMA_TIMESLICE , 0x0001FFFF);
}
static void nouveau_nv40_context_save(drm_device_t *dev)
{
drm_nouveau_private_t *dev_priv = dev->dev_private;
uint32_t fifoctx;
int channel;
channel = NV_READ(NV_PFIFO_CACH1_PSH1) & (nouveau_fifo_number(dev)-1);
fifoctx = NV_RAMIN + dev_priv->ramfc_offset + channel*128;
RAMFC_WR(DMA_PUT , NV_READ(NV_PFIFO_CACH1_DMAP));
RAMFC_WR(DMA_GET , NV_READ(NV_PFIFO_CACH1_DMAG));
RAMFC_WR(REF_CNT , NV_READ(NV_PFIFO_CACH1_REF_CNT));
RAMFC_WR(DMA_INSTANCE , NV_READ(NV_PFIFO_CACH1_DMAI));
RAMFC_WR(DMA_DCOUNT , NV_READ(NV_PFIFO_CACH1_DMA_DCOUNT));
RAMFC_WR(DMA_STATE , NV_READ(NV_PFIFO_CACH1_DMAS));
RAMFC_WR(DMA_FETCH , NV_READ(NV_PFIFO_CACH1_DMAF));
RAMFC_WR(ENGINE , NV_READ(NV_PFIFO_CACH1_ENG));
RAMFC_WR(PULL1_ENGINE , NV_READ(NV_PFIFO_CACH1_PUL1));
RAMFC_WR(ACQUIRE_VALUE , NV_READ(NV_PFIFO_CACH1_ACQUIRE_VALUE));
RAMFC_WR(ACQUIRE_TIMESTAMP, NV_READ(NV_PFIFO_CACH1_ACQUIRE_TIMESTAMP));
RAMFC_WR(ACQUIRE_TIMEOUT , NV_READ(NV_PFIFO_CACH1_ACQUIRE_TIMEOUT));
RAMFC_WR(SEMAPHORE , NV_READ(NV_PFIFO_CACH1_SEMAPHORE));
RAMFC_WR(DMA_SUBROUTINE , NV_READ(NV_PFIFO_CACH1_DMAG));
RAMFC_WR(GRCTX_INSTANCE , NV_READ(NV40_PFIFO_GRCTX_INSTANCE));
RAMFC_WR(DMA_TIMESLICE , NV_READ(NV_PFIFO_DMA_TIMESLICE) & 0x1FFFF);
RAMFC_WR(UNK_40 , NV_READ(NV40_PFIFO_UNK32E4));
}
#undef RAMFC_WR
/* This function should load values from RAMFC into PFIFO, but for now
* it just clobbers PFIFO with what nouveau_fifo_alloc used to setup
* unconditionally.
*/
static void
nouveau_fifo_context_restore(drm_device_t *dev, int channel)
{
drm_nouveau_private_t *dev_priv = dev->dev_private;
struct nouveau_fifo *chan = &dev_priv->fifos[channel];
uint32_t cb_inst;
cb_inst = nouveau_chip_instance_get(dev, chan->cmdbuf_obj->instance);
// FIXME check if we need to refill the time quota with something like NV_WRITE(0x204C, 0x0003FFFF);
if (dev_priv->card_type >= NV_40)
NV_WRITE(NV_PFIFO_CACH1_PSH1, 0x00010000|channel);
else
NV_WRITE(NV_PFIFO_CACH1_PSH1, 0x00000100|channel);
NV_WRITE(NV_PFIFO_CACH1_DMAP, 0 /*RAMFC_DMA_PUT*/);
NV_WRITE(NV_PFIFO_CACH1_DMAG, 0 /*RAMFC_DMA_GET*/);
NV_WRITE(NV_PFIFO_CACH1_DMAI, cb_inst);
NV_WRITE(NV_PFIFO_SIZE , 0x0000FFFF);
NV_WRITE(NV_PFIFO_CACH1_HASH, 0x0000FFFF);
NV_WRITE(NV_PFIFO_CACH0_PUL1, 0x00000001);
NV_WRITE(NV_PFIFO_CACH1_DMAC, 0x00000000);
NV_WRITE(NV_PFIFO_CACH1_DMAS, 0x00000000);
NV_WRITE(NV_PFIFO_CACH1_ENG, 0x00000000);
NV_WRITE(NV_PFIFO_CACH1_DMAF, NV_PFIFO_CACH1_DMAF_TRIG_112_BYTES |
NV_PFIFO_CACH1_DMAF_SIZE_128_BYTES |
NV_PFIFO_CACH1_DMAF_MAX_REQS_4 |
#ifdef __BIG_ENDIAN
NV_PFIFO_CACH1_BIG_ENDIAN |
#endif
0x00000000);
}
/* allocates and initializes a fifo for user space consumption */
static int nouveau_fifo_alloc(drm_device_t* dev,drm_nouveau_fifo_alloc_t* init, DRMFILE filp)
{
int i;
int ret;
drm_nouveau_private_t *dev_priv = dev->dev_private;
struct nouveau_object *cb_obj;
/*
* Alright, here is the full story
* Nvidia cards have multiple hw fifo contexts (praise them for that,
* no complicated crash-prone context switches)
* We allocate a new context for each app and let it write to it directly
* (woo, full userspace command submission !)
* When there are no more contexts, you lost
*/
for(i=0;i<nouveau_fifo_number(dev);i++)
if (dev_priv->fifos[i].used==0)
break;
DRM_INFO("Allocating FIFO number %d\n", i);
/* no more fifos. you lost. */
if (i==nouveau_fifo_number(dev))
return DRM_ERR(EINVAL);
/* allocate a command buffer, and create a dma object for the gpu */
ret = nouveau_fifo_cmdbuf_alloc(dev, i);
if (ret) return ret;
cb_obj = dev_priv->fifos[i].cmdbuf_obj;
/* that fifo is used */
dev_priv->fifos[i].used=1;
dev_priv->fifos[i].filp=filp;
init->channel = i;
init->put_base = 0;
dev_priv->cur_fifo = init->channel;
nouveau_wait_for_idle(dev);
/* disable the fifo caches */
NV_WRITE(NV_PFIFO_CACHES, 0x00000000);
NV_WRITE(NV_PFIFO_CACH1_DMAPSH, NV_READ(NV_PFIFO_CACH1_DMAPSH)&(~0x1));
NV_WRITE(NV_PFIFO_CACH1_PSH0, 0x00000000);
NV_WRITE(NV_PFIFO_CACH1_PUL0, 0x00000000);
/* Construct inital RAMFC for new channel */
if (dev_priv->card_type < NV_10) {
nouveau_nv04_context_init(dev, init);
} else if (dev_priv->card_type < NV_20) {
nv10_graph_context_create(dev, init->channel);
nouveau_nv10_context_init(dev, init);
} else if (dev_priv->card_type < NV_30) {
ret = nv20_graph_context_create(dev, init->channel);
if (ret) {
nouveau_fifo_free(dev, init->channel);
return ret;
}
nouveau_nv10_context_init(dev, init);
} else if (dev_priv->card_type < NV_40) {
ret = nv30_graph_context_create(dev, init->channel);
if (ret) {
nouveau_fifo_free(dev, init->channel);
return ret;
}
nouveau_nv30_context_init(dev, init);
} else {
ret = nv40_graph_context_create(dev, init->channel);
if (ret) {
nouveau_fifo_free(dev, init->channel);
return ret;
}
nouveau_nv40_context_init(dev, init);
}
/* enable the fifo dma operation */
NV_WRITE(NV_PFIFO_MODE,NV_READ(NV_PFIFO_MODE)|(1<<init->channel));
/* setup channel's default get/put values */
NV_WRITE(NV03_FIFO_REGS_DMAPUT(init->channel), init->put_base);
NV_WRITE(NV03_FIFO_REGS_DMAGET(init->channel), init->put_base);
/* If this is the first channel, setup PFIFO ourselves. For any
* other case, the GPU will handle this when it switches contexts.
*/
if (dev_priv->fifo_alloc_count == 0) {
nouveau_fifo_context_restore(dev, init->channel);
if (dev_priv->card_type >= NV_30) {
struct nouveau_fifo *chan;
uint32_t inst;
chan = &dev_priv->fifos[init->channel];
inst = nouveau_chip_instance_get(dev,
chan->ramin_grctx);
/* see comments in nv40_graph_context_restore() */
NV_WRITE(NV_PGRAPH_CHANNEL_CTX_SIZE, inst);
if (dev_priv->card_type >= NV_40) {
NV_WRITE(0x40032C, inst | 0x01000000);
NV_WRITE(NV40_PFIFO_GRCTX_INSTANCE, inst);
}
}
}
NV_WRITE(NV_PFIFO_CACH1_DMAPSH, 0x00000001);
NV_WRITE(NV_PFIFO_CACH1_PSH0, 0x00000001);
NV_WRITE(NV_PFIFO_CACH1_PUL0, 0x00000001);
NV_WRITE(NV_PFIFO_CACH1_PUL1, 0x00000001);
/* reenable the fifo caches */
NV_WRITE(NV_PFIFO_CACHES, 0x00000001);
/* make the fifo available to user space */
/* first, the fifo control regs */
init->ctrl = dev_priv->mmio->offset + NV03_FIFO_REGS(init->channel);
init->ctrl_size = NV03_FIFO_REGS_SIZE;
ret = drm_addmap(dev, init->ctrl, init->ctrl_size, _DRM_REGISTERS,
0, &dev_priv->fifos[init->channel].regs);
if (ret != 0)
return ret;
/* pass back FIFO map info to the caller */
init->cmdbuf = dev_priv->fifos[init->channel].cmdbuf_mem->start;
init->cmdbuf_size = dev_priv->fifos[init->channel].cmdbuf_mem->size;
/* FIFO has no objects yet */
dev_priv->fifos[init->channel].objs = NULL;
dev_priv->fifo_alloc_count++;
DRM_INFO("%s: initialised FIFO %d\n", __func__, init->channel);
return 0;
}
/* stops a fifo */
void nouveau_fifo_free(drm_device_t* dev,int n)
{
drm_nouveau_private_t *dev_priv = dev->dev_private;
int i;
int ctx_size = nouveau_fifo_ctx_size(dev);
dev_priv->fifos[n].used=0;
DRM_INFO("%s: freeing fifo %d\n", __func__, n);
/* disable the fifo caches */
NV_WRITE(NV_PFIFO_CACHES, 0x00000000);
NV_WRITE(NV_PFIFO_MODE,NV_READ(NV_PFIFO_MODE)&~(1<<n));
// FIXME XXX needs more code
/* Clean RAMFC */
for (i=0;i<ctx_size;i+=4) {
DRM_DEBUG("RAMFC +%02x: 0x%08x\n", i, NV_READ(NV_RAMIN +
dev_priv->ramfc_offset + n*ctx_size + i));
NV_WRITE(NV_RAMIN + dev_priv->ramfc_offset + n*ctx_size + i, 0);
}
if (dev_priv->card_type >= NV_40)
nouveau_instmem_free(dev, dev_priv->fifos[n].ramin_grctx);
else if (dev_priv->card_type >= NV_30) {
}
else if (dev_priv->card_type >= NV_20) {
/* clear ctx table */
INSTANCE_WR(dev_priv->ctx_table, n, 0);
nouveau_instmem_free(dev, dev_priv->fifos[n].ramin_grctx);
}
/* reenable the fifo caches */
NV_WRITE(NV_PFIFO_CACHES, 0x00000001);
/* Deallocate command buffer, and dma object */
nouveau_mem_free(dev, dev_priv->fifos[n].cmdbuf_mem);
dev_priv->fifo_alloc_count--;
}
/* cleanups all the fifos from filp */
void nouveau_fifo_cleanup(drm_device_t* dev, DRMFILE filp)
{
int i;
drm_nouveau_private_t *dev_priv = dev->dev_private;
DRM_DEBUG("clearing FIFO enables from filp\n");
for(i=0;i<nouveau_fifo_number(dev);i++)
if (dev_priv->fifos[i].used && dev_priv->fifos[i].filp==filp)
nouveau_fifo_free(dev,i);
/* check we still point at an active channel */
if (dev_priv->fifos[dev_priv->cur_fifo].used == 0) {
DRM_DEBUG("%s: cur_fifo is no longer owned.\n", __func__);
for (i=0;i<nouveau_fifo_number(dev);i++)
if (dev_priv->fifos[i].used) break;
if (i==nouveau_fifo_number(dev))
i=0;
DRM_DEBUG("%s: new cur_fifo is %d\n", __func__, i);
dev_priv->cur_fifo = i;
}
/* if (dev_priv->cmdbuf_alloc)
nouveau_fifo_init(dev);*/
}
int nouveau_fifo_id_get(drm_device_t* dev, DRMFILE filp)
{
drm_nouveau_private_t *dev_priv=dev->dev_private;
int i;
for(i=0;i<nouveau_fifo_number(dev);i++)
if (dev_priv->fifos[i].used && dev_priv->fifos[i].filp == filp)
return i;
return -1;
}
/***********************************
* ioctls wrapping the functions
***********************************/
static int nouveau_ioctl_fifo_alloc(DRM_IOCTL_ARGS)
{
DRM_DEVICE;
drm_nouveau_fifo_alloc_t init;
int res;
DRM_COPY_FROM_USER_IOCTL(init, (drm_nouveau_fifo_alloc_t __user *) data, sizeof(init));
res=nouveau_fifo_alloc(dev,&init,filp);
if (!res)
DRM_COPY_TO_USER_IOCTL((drm_nouveau_fifo_alloc_t __user *)data, init, sizeof(init));
return res;
}
/***********************************
* finally, the ioctl table
***********************************/
drm_ioctl_desc_t nouveau_ioctls[] = {
[DRM_IOCTL_NR(DRM_NOUVEAU_FIFO_ALLOC)] = {nouveau_ioctl_fifo_alloc, DRM_AUTH},
[DRM_IOCTL_NR(DRM_NOUVEAU_OBJECT_INIT)] = {nouveau_ioctl_object_init, DRM_AUTH},
[DRM_IOCTL_NR(DRM_NOUVEAU_DMA_OBJECT_INIT)] = {nouveau_ioctl_dma_object_init, DRM_AUTH},
[DRM_IOCTL_NR(DRM_NOUVEAU_MEM_ALLOC)] = {nouveau_ioctl_mem_alloc, DRM_AUTH},
[DRM_IOCTL_NR(DRM_NOUVEAU_MEM_FREE)] = {nouveau_ioctl_mem_free, DRM_AUTH},
[DRM_IOCTL_NR(DRM_NOUVEAU_GETPARAM)] = {nouveau_ioctl_getparam, DRM_AUTH},
[DRM_IOCTL_NR(DRM_NOUVEAU_SETPARAM)] = {nouveau_ioctl_setparam, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
};
int nouveau_max_ioctl = DRM_ARRAY_SIZE(nouveau_ioctls);
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