diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/fb/rammcp77.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/fb/rammcp77.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/rammcp77.c b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/rammcp77.c new file mode 100644 index 000000000000..abc18e89a97c --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/rammcp77.c @@ -0,0 +1,101 @@ +/* + * Copyright 2013 Red Hat Inc. + * + * 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 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 HOLDER(S) OR AUTHOR(S) 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. + * + * Authors: Ben Skeggs + */ +#include "nv50.h" + +struct mcp77_ram_priv { + struct nvkm_ram base; + u64 poller_base; +}; + +static int +mcp77_ram_ctor(struct nvkm_object *parent, struct nvkm_object *engine, + struct nvkm_oclass *oclass, void *data, u32 datasize, + struct nvkm_object **pobject) +{ + u32 rsvd_head = ( 256 * 1024); /* vga memory */ + u32 rsvd_tail = (1024 * 1024); /* vbios etc */ + struct nvkm_fb *pfb = nvkm_fb(parent); + struct mcp77_ram_priv *priv; + int ret; + + ret = nvkm_ram_create(parent, engine, oclass, &priv); + *pobject = nv_object(priv); + if (ret) + return ret; + + priv->base.type = NV_MEM_TYPE_STOLEN; + priv->base.stolen = (u64)nv_rd32(pfb, 0x100e10) << 12; + priv->base.size = (u64)nv_rd32(pfb, 0x100e14) << 12; + + rsvd_tail += 0x1000; + priv->poller_base = priv->base.size - rsvd_tail; + + ret = nvkm_mm_init(&pfb->vram, rsvd_head >> 12, + (priv->base.size - (rsvd_head + rsvd_tail)) >> 12, + 1); + if (ret) + return ret; + + priv->base.get = nv50_ram_get; + priv->base.put = nv50_ram_put; + return 0; +} + +static int +mcp77_ram_init(struct nvkm_object *object) +{ + struct nvkm_fb *pfb = nvkm_fb(object); + struct mcp77_ram_priv *priv = (void *)object; + int ret; + u64 dniso, hostnb, flush; + + ret = nvkm_ram_init(&priv->base); + if (ret) + return ret; + + dniso = ((priv->base.size - (priv->poller_base + 0x00)) >> 5) - 1; + hostnb = ((priv->base.size - (priv->poller_base + 0x20)) >> 5) - 1; + flush = ((priv->base.size - (priv->poller_base + 0x40)) >> 5) - 1; + + /* Enable NISO poller for various clients and set their associated + * read address, only for MCP77/78 and MCP79/7A. (fd#25701) + */ + nv_wr32(pfb, 0x100c18, dniso); + nv_mask(pfb, 0x100c14, 0x00000000, 0x00000001); + nv_wr32(pfb, 0x100c1c, hostnb); + nv_mask(pfb, 0x100c14, 0x00000000, 0x00000002); + nv_wr32(pfb, 0x100c24, flush); + nv_mask(pfb, 0x100c14, 0x00000000, 0x00010000); + return 0; +} + +struct nvkm_oclass +mcp77_ram_oclass = { + .ofuncs = &(struct nvkm_ofuncs) { + .ctor = mcp77_ram_ctor, + .dtor = _nvkm_ram_dtor, + .init = mcp77_ram_init, + .fini = _nvkm_ram_fini, + }, +}; |