| /* |
| * 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, |
| }, |
| }; |