diff options
Diffstat (limited to 'shared-core/nv40_fifo.c')
| -rw-r--r-- | shared-core/nv40_fifo.c | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/shared-core/nv40_fifo.c b/shared-core/nv40_fifo.c new file mode 100644 index 00000000..818a9024 --- /dev/null +++ b/shared-core/nv40_fifo.c @@ -0,0 +1,195 @@ +/* + * Copyright (C) 2007 Ben Skeggs. + * 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 THE COPYRIGHT OWNER(S) 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 "nouveau_drv.h" +#include "nouveau_drm.h" + + +#define RAMFC_WR(offset,val) INSTANCE_WR(chan->ramfc->gpuobj, \ + NV40_RAMFC_##offset/4, (val)) +#define RAMFC_RD(offset) INSTANCE_RD(chan->ramfc->gpuobj, \ + NV40_RAMFC_##offset/4) +#define NV40_RAMFC(c) (dev_priv->ramfc_offset + ((c)*NV40_RAMFC__SIZE)) +#define NV40_RAMFC__SIZE 128 + +int +nv40_fifo_create_context(drm_device_t *dev, int channel) +{ + drm_nouveau_private_t *dev_priv = dev->dev_private; + struct nouveau_fifo *chan = dev_priv->fifos[channel]; + int ret; + + if ((ret = nouveau_gpuobj_new_fake(dev, NV40_RAMFC(channel), + NV40_RAMFC__SIZE, + NVOBJ_FLAG_ZERO_ALLOC | + NVOBJ_FLAG_ZERO_FREE, + NULL, &chan->ramfc))) + return ret; + + /* Fill entries that are seen filled in dumps of nvidia driver just + * after channel's is put into DMA mode + */ + RAMFC_WR(DMA_PUT , chan->pushbuf_base); + RAMFC_WR(DMA_GET , chan->pushbuf_base); + RAMFC_WR(DMA_INSTANCE , chan->pushbuf->instance >> 4); + RAMFC_WR(DMA_FETCH , NV_PFIFO_CACHE1_DMA_FETCH_TRIG_128_BYTES | + NV_PFIFO_CACHE1_DMA_FETCH_SIZE_128_BYTES | + NV_PFIFO_CACHE1_DMA_FETCH_MAX_REQS_8 | +#ifdef __BIG_ENDIAN + NV_PFIFO_CACHE1_BIG_ENDIAN | +#endif + 0x30000000 /* no idea.. */); + RAMFC_WR(DMA_SUBROUTINE, 0); + RAMFC_WR(GRCTX_INSTANCE, chan->ramin_grctx->instance >> 4); + RAMFC_WR(DMA_TIMESLICE , 0x0001FFFF); + + /* enable the fifo dma operation */ + NV_WRITE(NV04_PFIFO_MODE,NV_READ(NV04_PFIFO_MODE)|(1<<channel)); + return 0; +} + +void +nv40_fifo_destroy_context(drm_device_t *dev, int channel) +{ + drm_nouveau_private_t *dev_priv = dev->dev_private; + struct nouveau_fifo *chan = dev_priv->fifos[channel]; + + NV_WRITE(NV04_PFIFO_MODE, NV_READ(NV04_PFIFO_MODE)&~(1<<channel)); + + if (chan->ramfc) + nouveau_gpuobj_ref_del(dev, &chan->ramfc); +} + +int +nv40_fifo_load_context(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 tmp, tmp2; + + NV_WRITE(NV04_PFIFO_CACHE1_DMA_GET , RAMFC_RD(DMA_GET)); + NV_WRITE(NV04_PFIFO_CACHE1_DMA_PUT , RAMFC_RD(DMA_PUT)); + NV_WRITE(NV10_PFIFO_CACHE1_REF_CNT , RAMFC_RD(REF_CNT)); + NV_WRITE(NV04_PFIFO_CACHE1_DMA_INSTANCE , RAMFC_RD(DMA_INSTANCE)); + NV_WRITE(NV04_PFIFO_CACHE1_DMA_DCOUNT , RAMFC_RD(DMA_DCOUNT)); + NV_WRITE(NV04_PFIFO_CACHE1_DMA_STATE , RAMFC_RD(DMA_STATE)); + + /* No idea what 0x2058 is.. */ + tmp = RAMFC_RD(DMA_FETCH); + tmp2 = NV_READ(0x2058) & 0xFFF; + tmp2 |= (tmp & 0x30000000); + NV_WRITE(0x2058, tmp2); + tmp &= ~0x30000000; + NV_WRITE(NV04_PFIFO_CACHE1_DMA_FETCH , tmp); + + NV_WRITE(NV04_PFIFO_CACHE1_ENGINE , RAMFC_RD(ENGINE)); + NV_WRITE(NV04_PFIFO_CACHE1_PULL1 , RAMFC_RD(PULL1_ENGINE)); + NV_WRITE(NV10_PFIFO_CACHE1_ACQUIRE_VALUE , RAMFC_RD(ACQUIRE_VALUE)); + NV_WRITE(NV10_PFIFO_CACHE1_ACQUIRE_TIMESTAMP, RAMFC_RD(ACQUIRE_TIMESTAMP)); + NV_WRITE(NV10_PFIFO_CACHE1_ACQUIRE_TIMEOUT , RAMFC_RD(ACQUIRE_TIMEOUT)); + NV_WRITE(NV10_PFIFO_CACHE1_SEMAPHORE , RAMFC_RD(SEMAPHORE)); + NV_WRITE(NV10_PFIFO_CACHE1_DMA_SUBROUTINE , RAMFC_RD(DMA_SUBROUTINE)); + NV_WRITE(NV40_PFIFO_GRCTX_INSTANCE , RAMFC_RD(GRCTX_INSTANCE)); + NV_WRITE(0x32e4, RAMFC_RD(UNK_40)); + /* NVIDIA does this next line twice... */ + NV_WRITE(0x32e8, RAMFC_RD(UNK_44)); + NV_WRITE(0x2088, RAMFC_RD(UNK_4C)); + NV_WRITE(0x3300, RAMFC_RD(UNK_50)); + + /* not sure what part is PUT, and which is GET.. never seen a non-zero + * value appear in a mmio-trace yet.. + */ +#if 0 + tmp = NV_READ(UNK_84); + NV_WRITE(NV_PFIFO_CACHE1_GET, tmp ???); + NV_WRITE(NV_PFIFO_CACHE1_PUT, tmp ???); +#endif + + /* Don't clobber the TIMEOUT_ENABLED flag when restoring from RAMFC */ + tmp = NV_READ(NV04_PFIFO_DMA_TIMESLICE) & ~0x1FFFF; + tmp |= RAMFC_RD(DMA_TIMESLICE) & 0x1FFFF; + NV_WRITE(NV04_PFIFO_DMA_TIMESLICE, tmp); + + /* Set channel active, and in DMA mode */ + NV_WRITE(NV03_PFIFO_CACHE1_PUSH1 , 0x00010000 | channel); + /* Reset DMA_CTL_AT_INFO to INVALID */ + tmp = NV_READ(NV04_PFIFO_CACHE1_DMA_CTL) & ~(1<<31); + NV_WRITE(NV04_PFIFO_CACHE1_DMA_CTL, tmp); + + return 0; +} + +int +nv40_fifo_save_context(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 tmp; + + RAMFC_WR(DMA_PUT , NV_READ(NV04_PFIFO_CACHE1_DMA_PUT)); + RAMFC_WR(DMA_GET , NV_READ(NV04_PFIFO_CACHE1_DMA_GET)); + RAMFC_WR(REF_CNT , NV_READ(NV10_PFIFO_CACHE1_REF_CNT)); + RAMFC_WR(DMA_INSTANCE , NV_READ(NV04_PFIFO_CACHE1_DMA_INSTANCE)); + RAMFC_WR(DMA_DCOUNT , NV_READ(NV04_PFIFO_CACHE1_DMA_DCOUNT)); + RAMFC_WR(DMA_STATE , NV_READ(NV04_PFIFO_CACHE1_DMA_STATE)); + + tmp = NV_READ(NV04_PFIFO_CACHE1_DMA_FETCH); + tmp |= NV_READ(0x2058) & 0x30000000; + RAMFC_WR(DMA_FETCH , tmp); + + RAMFC_WR(ENGINE , NV_READ(NV04_PFIFO_CACHE1_ENGINE)); + RAMFC_WR(PULL1_ENGINE , NV_READ(NV04_PFIFO_CACHE1_PULL1)); + RAMFC_WR(ACQUIRE_VALUE , NV_READ(NV10_PFIFO_CACHE1_ACQUIRE_VALUE)); + tmp = NV_READ(NV10_PFIFO_CACHE1_ACQUIRE_TIMESTAMP); + RAMFC_WR(ACQUIRE_TIMESTAMP, tmp); + RAMFC_WR(ACQUIRE_TIMEOUT , NV_READ(NV10_PFIFO_CACHE1_ACQUIRE_TIMEOUT)); + RAMFC_WR(SEMAPHORE , NV_READ(NV10_PFIFO_CACHE1_SEMAPHORE)); + + /* NVIDIA read 0x3228 first, then write DMA_GET here.. maybe something + * more involved depending on the value of 0x3228? + */ + RAMFC_WR(DMA_SUBROUTINE , NV_READ(NV04_PFIFO_CACHE1_DMA_GET)); + + RAMFC_WR(GRCTX_INSTANCE , NV_READ(NV40_PFIFO_GRCTX_INSTANCE)); + + /* No idea what the below is for exactly, ripped from a mmio-trace */ + RAMFC_WR(UNK_40 , NV_READ(NV40_PFIFO_UNK32E4)); + + /* NVIDIA do this next line twice.. bug? */ + RAMFC_WR(UNK_44 , NV_READ(0x32e8)); + RAMFC_WR(UNK_4C , NV_READ(0x2088)); + RAMFC_WR(UNK_50 , NV_READ(0x3300)); + +#if 0 /* no real idea which is PUT/GET in UNK_48.. */ + tmp = NV_READ(NV04_PFIFO_CACHE1_GET); + tmp |= (NV_READ(NV04_PFIFO_CACHE1_PUT) << 16); + RAMFC_WR(UNK_48 , tmp); +#endif + + return 0; +} + |