/*
* 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 <core/object.h>
#include <core/enum.h>
#include <subdev/fb.h>
#include <subdev/bios.h>
struct nv50_fb_priv {
struct nouveau_fb base;
struct page *r100c08_page;
dma_addr_t r100c08;
};
static int types[0x80] = {
1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1, 1, 1, 1, 0, 0, 0, 0, 2, 2, 2, 2, 0, 0, 0, 0,
1, 1, 1, 1, 1, 1, 1, 0, 2, 2, 2, 2, 2, 2, 2, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 0, 0,
0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 2, 2, 2, 2,
1, 0, 2, 0, 1, 0, 2, 0, 1, 1, 2, 2, 1, 1, 0, 0
};
static bool
nv50_fb_memtype_valid(struct nouveau_fb *pfb, u32 memtype)
{
return types[(memtype & 0xff00) >> 8] != 0;
}
static u32
nv50_fb_vram_rblock(struct nouveau_fb *pfb)
{
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 != pfb->ram.size) {
nv_warn(pfb, "memory controller reports %d MiB VRAM\n",
(u32)(pfb->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_fb_vram_init(struct nouveau_fb *pfb)
{
struct nouveau_device *device = nv_device(pfb);
struct nouveau_bios *bios = nouveau_bios(device);
const u32 rsvd_head = ( 256 * 1024) >> 12; /* vga memory */
const u32 rsvd_tail = (1024 * 1024) >> 12; /* vbios etc */
u32 size;
int ret;
pfb->ram.size = nv_rd32(pfb, 0x10020c);
pfb->ram.size = (pfb->ram.size & 0xffffff00) |
((pfb->ram.size & 0x000000ff) << 32);
size = (pfb->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;
pfb->ram.type = NV_MEM_TYPE_STOLEN;
pfb->ram.stolen = (u64)nv_rd32(pfb, 0x100e10) << 12;
break;
default:
switch (nv_rd32(pfb, 0x100714) & 0x00000007) {
case 0: pfb->ram.type = NV_MEM_TYPE_DDR1; break;
case 1:
if (nouveau_fb_bios_memtype(bios) == NV_MEM_TYPE_DDR3)
pfb->ram.type = NV_MEM_TYPE_DDR3;
else
pfb->ram.type = NV_MEM_TYPE_DDR2;
break;
case 2: pfb->ram.type = NV_MEM_TYPE_GDDR3; break;
case 3: pfb->ram.type = NV_MEM_TYPE_GDDR4; break;
case 4: pfb->ram.type = NV_MEM_TYPE_GDDR5; break;
default:
break;
}
ret = nouveau_mm_init(&pfb->vram, rsvd_head, size,
nv50_fb_vram_rblock(pfb) >> 12);
if (ret)
return ret;
pfb->ram.ranks = (nv_rd32(pfb, 0x100200) & 0x4) ? 2 : 1;
break;
}
return nv_rd32(pfb, 0x100320);
}
static int
nv50_fb_vram_new(struct nouveau_fb *pfb, u64 size, u32 align, u32 ncmin,
u32 memtype, struct nouveau_mem **pmem)
{
struct nv50_fb_priv *priv = (void *)pfb;
struct nouveau_mm *heap = &priv->base.vram;
struct nouveau_mm *tags = &priv->base.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 = types[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;
}
void
nv50_fb_vram_del(struct nouveau_fb *pfb, struct nouveau_mem **pmem)
{
struct nv50_fb_priv *priv = (void *)pfb;
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(&priv->base.vram, &this);
}
nouveau_mm_free(&priv->base.tags, &mem->tag);
mutex_unlock(&pfb->base.mutex);
kfree(mem);
}
static const struct nouveau_enum vm_dispatch_subclients[] = {
{ 0x00000000, "GRCTX", NULL },
{ 0x00000001, "NOTIFY", NULL },
{ 0x00000002, "QUERY", NULL },
{ 0x00000003, "COND", NULL },
{ 0x00000004, "M2M_IN", NULL },
{ 0x00000005, "M2M_OUT", NULL },
{ 0x00000006, "M2M_NOTIFY", NULL },
{}
};
static const struct nouveau_enum vm_ccache_subclients[] = {
{ 0x00000000, "CB", NULL },
{ 0x00000001, "TIC", NULL },
{ 0x00000002, "TSC", NULL },
{}
};
static const struct nouveau_enum vm_prop_subclients[] = {
{ 0x00000000, "RT0", NULL },
{ 0x00000001, "RT1", NULL },
{ 0x00000002, "RT2", NULL },
{ 0x00000003, "RT3", NULL },
{ 0x00000004, "RT4", NULL },
{ 0x00000005, "RT5", NULL },
{ 0x00000006, "RT6", NULL },
{ 0x00000007, "RT7", NULL },
{ 0x00000008, "ZETA", NULL },
{ 0x00000009, "LOCAL", NULL },
{ 0x0000000a, "GLOBAL", NULL },
{ 0x0000000b, "STACK", NULL },
{ 0x0000000c, "DST2D", NULL },
{}
};
static const struct nouveau_enum vm_pfifo_subclients[] = {
{ 0x00000000, "PUSHBUF", NULL },
{ 0x00000001, "SEMAPHORE", NULL },
{}
};
static const struct nouveau_enum vm_bar_subclients[] = {
{ 0x00000000, "FB", NULL },
{ 0x00000001, "IN", NULL },
{}
};
static const struct nouveau_enum vm_client[] = {
{ 0x00000000, "STRMOUT", NULL },
{ 0x00000003, "DISPATCH", vm_dispatch_subclients },
{ 0x00000004, "PFIFO_WRITE", NULL },
{ 0x00000005, "CCACHE", vm_ccache_subclients },
{ 0x00000006, "PPPP", NULL },
{ 0x00000007, "CLIPID", NULL },
{ 0x00000008, "PFIFO_READ", NULL },
{ 0x00000009, "VFETCH", NULL },
{ 0x0000000a, "TEXTURE", NULL },
{ 0x0000000b, "PROP", vm_prop_subclients },
{ 0x0000000c, "PVP", NULL },
{ 0x0000000d, "PBSP", NULL },
{ 0x0000000e, "PCRYPT", NULL },
{ 0x0000000f, "PCOUNTER", NULL },
{ 0x00000011, "PDAEMON", NULL },
{}
};
static const struct nouveau_enum vm_engine[] = {
{ 0x00000000, "PGRAPH", NULL },
{ 0x00000001, "PVP", NULL },
{ 0x00000004, "PEEPHOLE", NULL },
{ 0x00000005, "PFIFO", vm_pfifo_subclients },
{ 0x00000006, "BAR", vm_bar_subclients },
{ 0x00000008, "PPPP", NULL },
{ 0x00000009, "PBSP", NULL },
{ 0x0000000a, "PCRYPT", NULL },
{ 0x0000000b, "PCOUNTER", NULL },
{ 0x0000000c, "SEMAPHORE_BG", NULL },
{ 0x0000000d, "PCOPY", NULL },
{ 0x0000000e, "PDAEMON", NULL },
{}
};
static const struct nouveau_enum vm_fault[] = {
{ 0x00000000, "PT_NOT_PRESENT", NULL },
{ 0x00000001, "PT_TOO_SHORT", NULL },
{ 0x00000002, "PAGE_NOT_PRESENT", NULL },
{ 0x00000003, "PAGE_SYSTEM_ONLY", NULL },
{ 0x00000004, "PAGE_READ_ONLY", NULL },
{ 0x00000006, "NULL_DMAOBJ", NULL },
{ 0x00000007, "WRONG_MEMTYPE", NULL },
{ 0x0000000b, "VRAM_LIMIT", NULL },
{ 0x0000000f, "DMAOBJ_LIMIT", NULL },
{}
};
static void
nv50_fb_intr(struct nouveau_subdev *subdev)
{
struct nouveau_device *device = nv_device(subdev);
struct nv50_fb_priv *priv = (void *)subdev;
const struct nouveau_enum *en, *cl;
u32 trap[6], idx, chan;
u8 st0, st1, st2, st3;
int i;
idx = nv_rd32(priv, 0x100c90);
if (!(idx & 0x80000000))
return;
idx &= 0x00ffffff;
for (i = 0; i < 6; i++) {
nv_wr32(priv, 0x100c90, idx | i << 24);
trap[i] = nv_rd32(priv, 0x100c94);
}
nv_wr32(priv, 0x100c90, idx | 0x80000000);
/* decode status bits into something more useful */
if (device->chipset < 0xa3 ||
device->chipset == 0xaa || device->chipset == 0xac) {
st0 = (trap[0] & 0x0000000f) >> 0;
st1 = (trap[0] & 0x000000f0) >> 4;
st2 = (trap[0] & 0x00000f00) >> 8;
st3 = (trap[0] & 0x0000f000) >> 12;
} else {
st0 = (trap[0] & 0x000000ff) >> 0;
st1 = (trap[0] & 0x0000ff00) >> 8;
st2 = (trap[0] & 0x00ff0000) >> 16;
st3 = (trap[0] & 0xff000000) >> 24;
}
chan = (trap[2] << 16) | trap[1];
nv_error(priv, "trapped %s at 0x%02x%04x%04x on channel 0x%08x ",
(trap[5] & 0x00000100) ? "read" : "write",
trap[5] & 0xff, trap[4] & 0xffff, trap[3] & 0xffff, chan);
en = nouveau_enum_find(vm_engine, st0);
if (en)
printk("%s/", en->name);
else
printk("%02x/", st0);
cl = nouveau_enum_find(vm_client, st2);
if (cl)
printk("%s/", cl->name);
else
printk("%02x/", st2);
if (cl && cl->data) cl = nouveau_enum_find(cl->data, st3);
else if (en && en->data) cl = nouveau_enum_find(en->data, st3);
else cl = NULL;
if (cl)
printk("%s", cl->name);
else
printk("%02x", st3);
printk(" reason: ");
en = nouveau_enum_find(vm_fault, st1);
if (en)
printk("%s\n", en->name);
else
printk("0x%08x\n", st1);
}
static int
nv50_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 nv50_fb_priv *priv;
int ret;
ret = nouveau_fb_create(parent, engine, oclass, &priv);
*pobject = nv_object(priv);
if (ret)
return ret;
priv->r100c08_page = alloc_page(GFP_KERNEL | __GFP_ZERO);
if (priv->r100c08_page) {
priv->r100c08 = pci_map_page(device->pdev, priv->r100c08_page,
0, PAGE_SIZE,
PCI_DMA_BIDIRECTIONAL);
if (pci_dma_mapping_error(device->pdev, priv->r100c08))
nv_warn(priv, "failed 0x100c08 page map\n");
} else {
nv_warn(priv, "failed 0x100c08 page alloc\n");
}
priv->base.memtype_valid = nv50_fb_memtype_valid;
priv->base.ram.init = nv50_fb_vram_init;
priv->base.ram.get = nv50_fb_vram_new;
priv->base.ram.put = nv50_fb_vram_del;
nv_subdev(priv)->intr = nv50_fb_intr;
return nouveau_fb_preinit(&priv->base);
}
static void
nv50_fb_dtor(struct nouveau_object *object)
{
struct nouveau_device *device = nv_device(object);
struct nv50_fb_priv *priv = (void *)object;
if (priv->r100c08_page) {
pci_unmap_page(device->pdev, priv->r100c08, PAGE_SIZE,
PCI_DMA_BIDIRECTIONAL);
__free_page(priv->r100c08_page);
}
nouveau_fb_destroy(&priv->base);
}
static int
nv50_fb_init(struct nouveau_object *object)
{
struct nouveau_device *device = nv_device(object);
struct nv50_fb_priv *priv = (void *)object;
int ret;
ret = nouveau_fb_init(&priv->base);
if (ret)
return ret;
/* Not a clue what this is exactly. Without pointing it at a
* scratch page, VRAM->GART blits with M2MF (as in DDX DFS)
* cause IOMMU "read from address 0" errors (rh#561267)
*/
nv_wr32(priv, 0x100c08, priv->r100c08 >> 8);
/* This is needed to get meaningful information from 100c90
* on traps. No idea what these values mean exactly. */
switch (device->chipset) {
case 0x50:
nv_wr32(priv, 0x100c90, 0x000707ff);
break;
case 0xa3:
case 0xa5:
case 0xa8:
nv_wr32(priv, 0x100c90, 0x000d0fff);
break;
case 0xaf:
nv_wr32(priv, 0x100c90, 0x089d1fff);
break;
default:
nv_wr32(priv, 0x100c90, 0x001d07ff);
break;
}
return 0;
}
struct nouveau_oclass
nv50_fb_oclass = {
.handle = NV_SUBDEV(FB, 0x50),
.ofuncs = &(struct nouveau_ofuncs) {
.ctor = nv50_fb_ctor,
.dtor = nv50_fb_dtor,
.init = nv50_fb_init,
.fini = _nouveau_fb_fini,
},
};
