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/*
* 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/bios.h>
struct nvc0_fb_priv {
struct nouveau_fb base;
struct page *r100c10_page;
dma_addr_t r100c10;
};
/* 0 = unsupported
* 1 = non-compressed
* 3 = compressed
*/
static const u8 types[256] = {
1, 1, 3, 3, 3, 3, 0, 3, 3, 3, 3, 0, 0, 0, 0, 0,
0, 1, 0, 0, 0, 0, 0, 3, 3, 3, 3, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 3, 3, 3, 3, 3,
3, 3, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 3, 3, 3, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 3, 3, 3, 3, 0, 1, 1, 1, 1, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 3, 3, 3, 3, 1, 1, 1, 1, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3,
3, 3, 3, 1, 0, 0, 0, 0, 0, 0, 0, 0, 3, 3, 3, 3,
3, 3, 0, 0, 0, 0, 0, 0, 3, 0, 0, 3, 0, 3, 0, 3,
3, 0, 3, 3, 3, 3, 3, 0, 0, 3, 0, 3, 0, 3, 3, 0,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 0, 1, 1, 0
};
static bool
nvc0_fb_memtype_valid(struct nouveau_fb *pfb, u32 tile_flags)
{
u8 memtype = (tile_flags & 0x0000ff00) >> 8;
return likely((types[memtype] == 1));
}
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;
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->memtype = type;
mem->size = size;
mutex_lock(&mm->mutex);
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(&mm->mutex);
pfb->ram.put(pfb, &mem);
return ret;
}
list_add_tail(&r->rl_entry, &mem->regions);
size -= r->length;
} while (size);
mutex_unlock(&mm->mutex);
r = list_first_entry(&mem->regions, struct nouveau_mm_node, rl_entry);
mem->offset = (u64)r->offset << 12;
*pmem = mem;
return 0;
}
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;
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 = nv50_fb_vram_del;
priv->r100c10_page = alloc_page(GFP_KERNEL | __GFP_ZERO);
if (!priv->r100c10_page)
return -ENOMEM;
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,
},
};
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