diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_object.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_object.c | 150 |
1 files changed, 12 insertions, 138 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_object.c b/drivers/gpu/drm/nouveau/nouveau_object.c index cc419fae794..637636b55c7 100644 --- a/drivers/gpu/drm/nouveau/nouveau_object.c +++ b/drivers/gpu/drm/nouveau/nouveau_object.c @@ -35,6 +35,7 @@ #include "nouveau_drv.h" #include "nouveau_drm.h" #include "nouveau_ramht.h" +#include "nouveau_software.h" #include "nouveau_vm.h" #include "nv50_display.h" @@ -133,37 +134,6 @@ nouveau_gpuobj_mthd_call2(struct drm_device *dev, int chid, return ret; } -/* NVidia uses context objects to drive drawing operations. - - Context objects can be selected into 8 subchannels in the FIFO, - and then used via DMA command buffers. - - A context object is referenced by a user defined handle (CARD32). The HW - looks up graphics objects in a hash table in the instance RAM. - - An entry in the hash table consists of 2 CARD32. The first CARD32 contains - the handle, the second one a bitfield, that contains the address of the - object in instance RAM. - - The format of the second CARD32 seems to be: - - NV4 to NV30: - - 15: 0 instance_addr >> 4 - 17:16 engine (here uses 1 = graphics) - 28:24 channel id (here uses 0) - 31 valid (use 1) - - NV40: - - 15: 0 instance_addr >> 4 (maybe 19-0) - 21:20 engine (here uses 1 = graphics) - I'm unsure about the other bits, but using 0 seems to work. - - The key into the hash table depends on the object handle and channel id and - is given as: -*/ - int nouveau_gpuobj_new(struct drm_device *dev, struct nouveau_channel *chan, uint32_t size, int align, uint32_t flags, @@ -361,34 +331,6 @@ nouveau_gpuobj_new_fake(struct drm_device *dev, u32 pinst, u64 vinst, return 0; } -/* - DMA objects are used to reference a piece of memory in the - framebuffer, PCI or AGP address space. Each object is 16 bytes big - and looks as follows: - - entry[0] - 11:0 class (seems like I can always use 0 here) - 12 page table present? - 13 page entry linear? - 15:14 access: 0 rw, 1 ro, 2 wo - 17:16 target: 0 NV memory, 1 NV memory tiled, 2 PCI, 3 AGP - 31:20 dma adjust (bits 0-11 of the address) - entry[1] - dma limit (size of transfer) - entry[X] - 1 0 readonly, 1 readwrite - 31:12 dma frame address of the page (bits 12-31 of the address) - entry[N] - page table terminator, same value as the first pte, as does nvidia - rivatv uses 0xffffffff - - Non linear page tables need a list of frame addresses afterwards, - the rivatv project has some info on this. - - The method below creates a DMA object in instance RAM and returns a handle - to it that can be used to set up context objects. -*/ - void nv50_gpuobj_dma_init(struct nouveau_gpuobj *obj, u32 offset, int class, u64 base, u64 size, int target, int access, @@ -540,82 +482,6 @@ nouveau_gpuobj_dma_new(struct nouveau_channel *chan, int class, u64 base, return 0; } -/* Context objects in the instance RAM have the following structure. - * On NV40 they are 32 byte long, on NV30 and smaller 16 bytes. - - NV4 - NV30: - - entry[0] - 11:0 class - 12 chroma key enable - 13 user clip enable - 14 swizzle enable - 17:15 patch config: - scrcopy_and, rop_and, blend_and, scrcopy, srccopy_pre, blend_pre - 18 synchronize enable - 19 endian: 1 big, 0 little - 21:20 dither mode - 23 single step enable - 24 patch status: 0 invalid, 1 valid - 25 context_surface 0: 1 valid - 26 context surface 1: 1 valid - 27 context pattern: 1 valid - 28 context rop: 1 valid - 29,30 context beta, beta4 - entry[1] - 7:0 mono format - 15:8 color format - 31:16 notify instance address - entry[2] - 15:0 dma 0 instance address - 31:16 dma 1 instance address - entry[3] - dma method traps - - NV40: - No idea what the exact format is. Here's what can be deducted: - - entry[0]: - 11:0 class (maybe uses more bits here?) - 17 user clip enable - 21:19 patch config - 25 patch status valid ? - entry[1]: - 15:0 DMA notifier (maybe 20:0) - entry[2]: - 15:0 DMA 0 instance (maybe 20:0) - 24 big endian - entry[3]: - 15:0 DMA 1 instance (maybe 20:0) - entry[4]: - entry[5]: - set to 0? -*/ -static int -nouveau_gpuobj_sw_new(struct nouveau_channel *chan, u32 handle, u16 class) -{ - struct drm_nouveau_private *dev_priv = chan->dev->dev_private; - struct nouveau_gpuobj *gpuobj; - int ret; - - gpuobj = kzalloc(sizeof(*gpuobj), GFP_KERNEL); - if (!gpuobj) - return -ENOMEM; - gpuobj->dev = chan->dev; - gpuobj->engine = NVOBJ_ENGINE_SW; - gpuobj->class = class; - kref_init(&gpuobj->refcount); - gpuobj->cinst = 0x40; - - spin_lock(&dev_priv->ramin_lock); - list_add_tail(&gpuobj->list, &dev_priv->gpuobj_list); - spin_unlock(&dev_priv->ramin_lock); - - ret = nouveau_ramht_insert(chan, handle, gpuobj); - nouveau_gpuobj_ref(NULL, &gpuobj); - return ret; -} - int nouveau_gpuobj_gr_new(struct nouveau_channel *chan, u32 handle, int class) { @@ -632,9 +498,6 @@ nouveau_gpuobj_gr_new(struct nouveau_channel *chan, u32 handle, int class) if (oc->id != class) continue; - if (oc->engine == NVOBJ_ENGINE_SW) - return nouveau_gpuobj_sw_new(chan, handle, class); - if (!chan->engctx[oc->engine]) { ret = eng->context_new(chan, oc->engine); if (ret) @@ -956,6 +819,17 @@ int nouveau_ioctl_grobj_alloc(struct drm_device *dev, void *data, if (init->handle == ~0) return -EINVAL; + /* compatibility with userspace that assumes 506e for all chipsets */ + if (init->class == 0x506e) { + init->class = nouveau_software_class(dev); + if (init->class == 0x906e) + return 0; + } else + if (init->class == 0x906e) { + NV_ERROR(dev, "906e not supported yet\n"); + return -EINVAL; + } + chan = nouveau_channel_get(file_priv, init->channel); if (IS_ERR(chan)) return PTR_ERR(chan); |