| /* |
| * 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 <subdev/bios.h> |
| #include <core/mm.h> |
| #include "priv.h" |
| |
| void |
| nv50_ram_put(struct nouveau_fb *pfb, struct nouveau_mem **pmem) |
| { |
| struct nouveau_mm_node *this; |
| struct nouveau_mem *mem; |
| |
| mem = *pmem; |
| *pmem = NULL; |
| if (unlikely(mem == NULL)) |
| return; |
| |
| mutex_lock(&pfb->base.mutex); |
| while (!list_empty(&mem->regions)) { |
| this = list_first_entry(&mem->regions, typeof(*this), rl_entry); |
| |
| list_del(&this->rl_entry); |
| nouveau_mm_free(&pfb->vram, &this); |
| } |
| |
| nouveau_mm_free(&pfb->tags, &mem->tag); |
| mutex_unlock(&pfb->base.mutex); |
| |
| kfree(mem); |
| } |
| |
| static int |
| nv50_ram_get(struct nouveau_fb *pfb, u64 size, u32 align, u32 ncmin, |
| u32 memtype, struct nouveau_mem **pmem) |
| { |
| struct nouveau_mm *heap = &pfb->vram; |
| struct nouveau_mm *tags = &pfb->tags; |
| struct nouveau_mm_node *r; |
| struct nouveau_mem *mem; |
| int comp = (memtype & 0x300) >> 8; |
| int type = (memtype & 0x07f); |
| int back = (memtype & 0x800); |
| int min, max, ret; |
| |
| max = (size >> 12); |
| min = ncmin ? (ncmin >> 12) : max; |
| align >>= 12; |
| |
| mem = kzalloc(sizeof(*mem), GFP_KERNEL); |
| if (!mem) |
| return -ENOMEM; |
| |
| mutex_lock(&pfb->base.mutex); |
| if (comp) { |
| if (align == 16) { |
| int n = (max >> 4) * comp; |
| |
| ret = nouveau_mm_head(tags, 1, n, n, 1, &mem->tag); |
| if (ret) |
| mem->tag = NULL; |
| } |
| |
| if (unlikely(!mem->tag)) |
| comp = 0; |
| } |
| |
| INIT_LIST_HEAD(&mem->regions); |
| mem->memtype = (comp << 7) | type; |
| mem->size = max; |
| |
| type = nv50_fb_memtype[type]; |
| do { |
| if (back) |
| ret = nouveau_mm_tail(heap, type, max, min, align, &r); |
| else |
| ret = nouveau_mm_head(heap, type, max, min, align, &r); |
| if (ret) { |
| mutex_unlock(&pfb->base.mutex); |
| pfb->ram->put(pfb, &mem); |
| return ret; |
| } |
| |
| list_add_tail(&r->rl_entry, &mem->regions); |
| max -= r->length; |
| } while (max); |
| 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 u32 |
| nv50_fb_vram_rblock(struct nouveau_fb *pfb, struct nouveau_ram *ram) |
| { |
| int i, parts, colbits, rowbitsa, rowbitsb, banks; |
| u64 rowsize, predicted; |
| u32 r0, r4, rt, ru, rblock_size; |
| |
| r0 = nv_rd32(pfb, 0x100200); |
| r4 = nv_rd32(pfb, 0x100204); |
| rt = nv_rd32(pfb, 0x100250); |
| ru = nv_rd32(pfb, 0x001540); |
| nv_debug(pfb, "memcfg 0x%08x 0x%08x 0x%08x 0x%08x\n", r0, r4, rt, ru); |
| |
| for (i = 0, parts = 0; i < 8; i++) { |
| if (ru & (0x00010000 << i)) |
| parts++; |
| } |
| |
| colbits = (r4 & 0x0000f000) >> 12; |
| rowbitsa = ((r4 & 0x000f0000) >> 16) + 8; |
| rowbitsb = ((r4 & 0x00f00000) >> 20) + 8; |
| banks = 1 << (((r4 & 0x03000000) >> 24) + 2); |
| |
| rowsize = parts * banks * (1 << colbits) * 8; |
| predicted = rowsize << rowbitsa; |
| if (r0 & 0x00000004) |
| predicted += rowsize << rowbitsb; |
| |
| if (predicted != ram->size) { |
| nv_warn(pfb, "memory controller reports %d MiB VRAM\n", |
| (u32)(ram->size >> 20)); |
| } |
| |
| rblock_size = rowsize; |
| if (rt & 1) |
| rblock_size *= 3; |
| |
| nv_debug(pfb, "rblock %d bytes\n", rblock_size); |
| return rblock_size; |
| } |
| |
| static int |
| nv50_ram_create(struct nouveau_object *parent, struct nouveau_object *engine, |
| struct nouveau_oclass *oclass, void *data, u32 datasize, |
| struct nouveau_object **pobject) |
| { |
| struct nouveau_fb *pfb = nouveau_fb(parent); |
| struct nouveau_device *device = nv_device(pfb); |
| struct nouveau_bios *bios = nouveau_bios(device); |
| struct nouveau_ram *ram; |
| const u32 rsvd_head = ( 256 * 1024) >> 12; /* vga memory */ |
| const u32 rsvd_tail = (1024 * 1024) >> 12; /* vbios etc */ |
| u32 size; |
| int ret; |
| |
| ret = nouveau_ram_create(parent, engine, oclass, &ram); |
| *pobject = nv_object(ram); |
| if (ret) |
| return ret; |
| |
| ram->size = nv_rd32(pfb, 0x10020c); |
| ram->size = (ram->size & 0xffffff00) | |
| ((ram->size & 0x000000ff) << 32); |
| |
| size = (ram->size >> 12) - rsvd_head - rsvd_tail; |
| switch (device->chipset) { |
| case 0xaa: |
| case 0xac: |
| case 0xaf: /* IGPs, no reordering, no real VRAM */ |
| ret = nouveau_mm_init(&pfb->vram, rsvd_head, size, 1); |
| if (ret) |
| return ret; |
| |
| ram->type = NV_MEM_TYPE_STOLEN; |
| ram->stolen = (u64)nv_rd32(pfb, 0x100e10) << 12; |
| break; |
| default: |
| switch (nv_rd32(pfb, 0x100714) & 0x00000007) { |
| case 0: ram->type = NV_MEM_TYPE_DDR1; break; |
| case 1: |
| if (nouveau_fb_bios_memtype(bios) == NV_MEM_TYPE_DDR3) |
| ram->type = NV_MEM_TYPE_DDR3; |
| else |
| ram->type = NV_MEM_TYPE_DDR2; |
| break; |
| case 2: ram->type = NV_MEM_TYPE_GDDR3; break; |
| case 3: ram->type = NV_MEM_TYPE_GDDR4; break; |
| case 4: ram->type = NV_MEM_TYPE_GDDR5; break; |
| default: |
| break; |
| } |
| |
| ret = nouveau_mm_init(&pfb->vram, rsvd_head, size, |
| nv50_fb_vram_rblock(pfb, ram) >> 12); |
| if (ret) |
| return ret; |
| |
| ram->ranks = (nv_rd32(pfb, 0x100200) & 0x4) ? 2 : 1; |
| ram->tags = nv_rd32(pfb, 0x100320); |
| break; |
| } |
| |
| ram->get = nv50_ram_get; |
| ram->put = nv50_ram_put; |
| return 0; |
| } |
| |
| struct nouveau_oclass |
| nv50_ram_oclass = { |
| .handle = 0, |
| .ofuncs = &(struct nouveau_ofuncs) { |
| .ctor = nv50_ram_create, |
| .dtor = _nouveau_ram_dtor, |
| .init = _nouveau_ram_init, |
| .fini = _nouveau_ram_fini, |
| } |
| }; |