diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/subdev/fb/nvc0.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/fb/nvc0.c | 247 |
1 files changed, 247 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/fb/nvc0.c b/drivers/gpu/drm/nouveau/core/subdev/fb/nvc0.c new file mode 100644 index 0000000..86ad592 --- /dev/null +++ b/drivers/gpu/drm/nouveau/core/subdev/fb/nvc0.c @@ -0,0 +1,247 @@ +/* + * Copyright 2012 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 <subdev/fb.h> +#include <subdev/ltcg.h> +#include <subdev/bios.h> + +struct nvc0_fb_priv { + struct nouveau_fb base; + struct page *r100c10_page; + dma_addr_t r100c10; +}; + +extern const u8 nvc0_pte_storage_type_map[256]; + + +static bool +nvc0_fb_memtype_valid(struct nouveau_fb *pfb, u32 tile_flags) +{ + u8 memtype = (tile_flags & 0x0000ff00) >> 8; + return likely((nvc0_pte_storage_type_map[memtype] != 0xff)); +} + +static int +nvc0_fb_vram_init(struct nouveau_fb *pfb) +{ + struct nouveau_bios *bios = nouveau_bios(pfb); + const u32 rsvd_head = ( 256 * 1024) >> 12; /* vga memory */ + const u32 rsvd_tail = (1024 * 1024) >> 12; /* vbios etc */ + u32 parts = nv_rd32(pfb, 0x022438); + u32 pmask = nv_rd32(pfb, 0x022554); + u32 bsize = nv_rd32(pfb, 0x10f20c); + u32 offset, length; + bool uniform = true; + int ret, part; + + nv_debug(pfb, "0x100800: 0x%08x\n", nv_rd32(pfb, 0x100800)); + nv_debug(pfb, "parts 0x%08x mask 0x%08x\n", parts, pmask); + + pfb->ram.type = nouveau_fb_bios_memtype(bios); + pfb->ram.ranks = (nv_rd32(pfb, 0x10f200) & 0x00000004) ? 2 : 1; + + /* read amount of vram attached to each memory controller */ + for (part = 0; part < parts; part++) { + if (!(pmask & (1 << part))) { + u32 psize = nv_rd32(pfb, 0x11020c + (part * 0x1000)); + if (psize != bsize) { + if (psize < bsize) + bsize = psize; + uniform = false; + } + + nv_debug(pfb, "%d: mem_amount 0x%08x\n", part, psize); + pfb->ram.size += (u64)psize << 20; + } + } + + /* if all controllers have the same amount attached, there's no holes */ + if (uniform) { + offset = rsvd_head; + length = (pfb->ram.size >> 12) - rsvd_head - rsvd_tail; + return nouveau_mm_init(&pfb->vram, offset, length, 1); + } + + /* otherwise, address lowest common amount from 0GiB */ + ret = nouveau_mm_init(&pfb->vram, rsvd_head, (bsize << 8) * parts, 1); + if (ret) + return ret; + + /* and the rest starting from (8GiB + common_size) */ + offset = (0x0200000000ULL >> 12) + (bsize << 8); + length = (pfb->ram.size >> 12) - (bsize << 8) - rsvd_tail; + + ret = nouveau_mm_init(&pfb->vram, offset, length, 0); + if (ret) { + nouveau_mm_fini(&pfb->vram); + return ret; + } + + return 0; +} + +static int +nvc0_fb_vram_new(struct nouveau_fb *pfb, u64 size, u32 align, u32 ncmin, + u32 memtype, struct nouveau_mem **pmem) +{ + struct nouveau_mm *mm = &pfb->vram; + struct nouveau_mm_node *r; + struct nouveau_mem *mem; + int type = (memtype & 0x0ff); + int back = (memtype & 0x800); + int ret; + const bool comp = nvc0_pte_storage_type_map[type] != type; + + size >>= 12; + align >>= 12; + ncmin >>= 12; + if (!ncmin) + ncmin = size; + + mem = kzalloc(sizeof(*mem), GFP_KERNEL); + if (!mem) + return -ENOMEM; + + INIT_LIST_HEAD(&mem->regions); + mem->size = size; + + mutex_lock(&pfb->base.mutex); + if (comp) { + struct nouveau_ltcg *ltcg = nouveau_ltcg(pfb->base.base.parent); + + /* compression only works with lpages */ + if (align == (1 << (17 - 12))) { + int n = size >> 5; + ltcg->tags_alloc(ltcg, n, &mem->tag); + } + if (unlikely(!mem->tag)) + type = nvc0_pte_storage_type_map[type]; + } + mem->memtype = type; + + do { + if (back) + ret = nouveau_mm_tail(mm, 1, size, ncmin, align, &r); + else + ret = nouveau_mm_head(mm, 1, size, ncmin, align, &r); + if (ret) { + mutex_unlock(&pfb->base.mutex); + pfb->ram.put(pfb, &mem); + return ret; + } + + list_add_tail(&r->rl_entry, &mem->regions); + size -= r->length; + } while (size); + mutex_unlock(&pfb->base.mutex); + + r = list_first_entry(&mem->regions, struct nouveau_mm_node, rl_entry); + mem->offset = (u64)r->offset << 12; + *pmem = mem; + return 0; +} + +static void +nvc0_fb_vram_del(struct nouveau_fb *pfb, struct nouveau_mem **pmem) +{ + struct nouveau_ltcg *ltcg = nouveau_ltcg(pfb->base.base.parent); + + if ((*pmem)->tag) + ltcg->tags_free(ltcg, &(*pmem)->tag); + + nv50_fb_vram_del(pfb, pmem); +} + +static int +nvc0_fb_init(struct nouveau_object *object) +{ + struct nvc0_fb_priv *priv = (void *)object; + int ret; + + ret = nouveau_fb_init(&priv->base); + if (ret) + return ret; + + if (priv->r100c10_page) + nv_wr32(priv, 0x100c10, priv->r100c10 >> 8); + return 0; +} + +static void +nvc0_fb_dtor(struct nouveau_object *object) +{ + struct nouveau_device *device = nv_device(object); + struct nvc0_fb_priv *priv = (void *)object; + + if (priv->r100c10_page) { + pci_unmap_page(device->pdev, priv->r100c10, PAGE_SIZE, + PCI_DMA_BIDIRECTIONAL); + __free_page(priv->r100c10_page); + } + + nouveau_fb_destroy(&priv->base); +} + +static int +nvc0_fb_ctor(struct nouveau_object *parent, struct nouveau_object *engine, + struct nouveau_oclass *oclass, void *data, u32 size, + struct nouveau_object **pobject) +{ + struct nouveau_device *device = nv_device(parent); + struct nvc0_fb_priv *priv; + int ret; + + ret = nouveau_fb_create(parent, engine, oclass, &priv); + *pobject = nv_object(priv); + if (ret) + return ret; + + priv->base.memtype_valid = nvc0_fb_memtype_valid; + priv->base.ram.init = nvc0_fb_vram_init; + priv->base.ram.get = nvc0_fb_vram_new; + priv->base.ram.put = nvc0_fb_vram_del; + + priv->r100c10_page = alloc_page(GFP_KERNEL | __GFP_ZERO); + if (priv->r100c10_page) { + priv->r100c10 = pci_map_page(device->pdev, priv->r100c10_page, + 0, PAGE_SIZE, + PCI_DMA_BIDIRECTIONAL); + if (pci_dma_mapping_error(device->pdev, priv->r100c10)) + return -EFAULT; + } + + return nouveau_fb_preinit(&priv->base); +} + + +struct nouveau_oclass +nvc0_fb_oclass = { + .handle = NV_SUBDEV(FB, 0xc0), + .ofuncs = &(struct nouveau_ofuncs) { + .ctor = nvc0_fb_ctor, + .dtor = nvc0_fb_dtor, + .init = nvc0_fb_init, + .fini = _nouveau_fb_fini, + }, +}; |