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authorChristoph Bumiller <e0425955@student.tuwien.ac.at>2013-03-27 22:16:53 +0100
committerBen Skeggs <bskeggs@redhat.com>2013-04-26 15:37:40 +1000
commite30441adb91b020044f257c5c8e41022f3406ba1 (patch)
treeed9aaaa9a0aeb74eeaef783b4fd531269d3396ae
parentde7b7d59d54852c9544a9e4fa7af719511fb5366 (diff)
drm/nvc0-/ltcg: implement VRAM compression
Signed-off-by: Christoph Bumiller <e0425955@student.tuwien.ac.at> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
-rw-r--r--drivers/gpu/drm/nouveau/core/include/subdev/ltcg.h7
-rw-r--r--drivers/gpu/drm/nouveau/core/subdev/fb/nvc0.c55
-rw-r--r--drivers/gpu/drm/nouveau/core/subdev/ltcg/nvc0.c129
-rw-r--r--drivers/gpu/drm/nouveau/core/subdev/vm/nvc0.c58
4 files changed, 220 insertions, 29 deletions
diff --git a/drivers/gpu/drm/nouveau/core/include/subdev/ltcg.h b/drivers/gpu/drm/nouveau/core/include/subdev/ltcg.h
index f351f63..a1985ed 100644
--- a/drivers/gpu/drm/nouveau/core/include/subdev/ltcg.h
+++ b/drivers/gpu/drm/nouveau/core/include/subdev/ltcg.h
@@ -4,8 +4,15 @@
#include <core/subdev.h>
#include <core/device.h>
+struct nouveau_mm_node;
+
struct nouveau_ltcg {
struct nouveau_subdev base;
+
+ int (*tags_alloc)(struct nouveau_ltcg *, u32 count,
+ struct nouveau_mm_node **);
+ void (*tags_free)(struct nouveau_ltcg *, struct nouveau_mm_node **);
+ void (*tags_clear)(struct nouveau_ltcg *, u32 first, u32 count);
};
static inline struct nouveau_ltcg *
diff --git a/drivers/gpu/drm/nouveau/core/subdev/fb/nvc0.c b/drivers/gpu/drm/nouveau/core/subdev/fb/nvc0.c
index 3b2ddc6..86ad592 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/fb/nvc0.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/fb/nvc0.c
@@ -23,6 +23,7 @@
*/
#include <subdev/fb.h>
+#include <subdev/ltcg.h>
#include <subdev/bios.h>
struct nvc0_fb_priv {
@@ -31,34 +32,14 @@ struct nvc0_fb_priv {
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
-};
+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((types[memtype] == 1));
+ return likely((nvc0_pte_storage_type_map[memtype] != 0xff));
}
static int
@@ -130,6 +111,7 @@ nvc0_fb_vram_new(struct nouveau_fb *pfb, u64 size, u32 align, u32 ncmin,
int type = (memtype & 0x0ff);
int back = (memtype & 0x800);
int ret;
+ const bool comp = nvc0_pte_storage_type_map[type] != type;
size >>= 12;
align >>= 12;
@@ -142,10 +124,22 @@ nvc0_fb_vram_new(struct nouveau_fb *pfb, u64 size, u32 align, u32 ncmin,
return -ENOMEM;
INIT_LIST_HEAD(&mem->regions);
- mem->memtype = type;
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);
@@ -168,6 +162,17 @@ nvc0_fb_vram_new(struct nouveau_fb *pfb, u64 size, u32 align, u32 ncmin,
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)
{
@@ -215,7 +220,7 @@ nvc0_fb_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
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->base.ram.put = nvc0_fb_vram_del;
priv->r100c10_page = alloc_page(GFP_KERNEL | __GFP_ZERO);
if (priv->r100c10_page) {
diff --git a/drivers/gpu/drm/nouveau/core/subdev/ltcg/nvc0.c b/drivers/gpu/drm/nouveau/core/subdev/ltcg/nvc0.c
index 078a2b9..a529563 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/ltcg/nvc0.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/ltcg/nvc0.c
@@ -23,10 +23,17 @@
*/
#include <subdev/ltcg.h>
+#include <subdev/fb.h>
+#include <subdev/timer.h>
struct nvc0_ltcg_priv {
struct nouveau_ltcg base;
+ u32 part_nr;
+ u32 part_mask;
u32 subp_nr;
+ struct nouveau_mm tags;
+ u32 num_tags;
+ struct nouveau_mm_node *tag_ram;
};
static void
@@ -62,11 +69,104 @@ nvc0_ltcg_intr(struct nouveau_subdev *subdev)
}
static int
+nvc0_ltcg_tags_alloc(struct nouveau_ltcg *ltcg, u32 n,
+ struct nouveau_mm_node **pnode)
+{
+ struct nvc0_ltcg_priv *priv = (struct nvc0_ltcg_priv *)ltcg;
+ int ret;
+
+ ret = nouveau_mm_head(&priv->tags, 1, n, n, 1, pnode);
+ if (ret)
+ *pnode = NULL;
+
+ return ret;
+}
+
+static void
+nvc0_ltcg_tags_free(struct nouveau_ltcg *ltcg, struct nouveau_mm_node **pnode)
+{
+ struct nvc0_ltcg_priv *priv = (struct nvc0_ltcg_priv *)ltcg;
+
+ nouveau_mm_free(&priv->tags, pnode);
+}
+
+static void
+nvc0_ltcg_tags_clear(struct nouveau_ltcg *ltcg, u32 first, u32 count)
+{
+ struct nvc0_ltcg_priv *priv = (struct nvc0_ltcg_priv *)ltcg;
+ u32 last = first + count - 1;
+ int p, i;
+
+ BUG_ON((first > last) || (last >= priv->num_tags));
+
+ nv_wr32(priv, 0x17e8cc, first);
+ nv_wr32(priv, 0x17e8d0, last);
+ nv_wr32(priv, 0x17e8c8, 0x4); /* trigger clear */
+
+ /* wait until it's finished with clearing */
+ for (p = 0; p < priv->part_nr; ++p) {
+ if (!(priv->part_mask & (1 << p)))
+ continue;
+ for (i = 0; i < priv->subp_nr; ++i)
+ nv_wait(priv, 0x1410c8 + p * 0x2000 + i * 0x400, ~0, 0);
+ }
+}
+
+/* TODO: Figure out tag memory details and drop the over-cautious allocation.
+ */
+static int
+nvc0_ltcg_init_tag_ram(struct nouveau_fb *pfb, struct nvc0_ltcg_priv *priv)
+{
+ u32 tag_size, tag_margin, tag_align;
+ int ret;
+
+ nv_wr32(priv, 0x17e8d8, priv->part_nr);
+
+ /* tags for 1/4 of VRAM should be enough (8192/4 per GiB of VRAM) */
+ priv->num_tags = (pfb->ram.size >> 17) / 4;
+ if (priv->num_tags > (1 << 17))
+ priv->num_tags = 1 << 17; /* we have 17 bits in PTE */
+ priv->num_tags = (priv->num_tags + 63) & ~63; /* round up to 64 */
+
+ tag_align = priv->part_nr * 0x800;
+ tag_margin = (tag_align < 0x6000) ? 0x6000 : tag_align;
+
+ /* 4 part 4 sub: 0x2000 bytes for 56 tags */
+ /* 3 part 4 sub: 0x6000 bytes for 168 tags */
+ /*
+ * About 147 bytes per tag. Let's be safe and allocate x2, which makes
+ * 0x4980 bytes for 64 tags, and round up to 0x6000 bytes for 64 tags.
+ *
+ * For 4 GiB of memory we'll have 8192 tags which makes 3 MiB, < 0.1 %.
+ */
+ tag_size = (priv->num_tags / 64) * 0x6000 + tag_margin;
+ tag_size += tag_align;
+ tag_size = (tag_size + 0xfff) >> 12; /* round up */
+
+ ret = nouveau_mm_tail(&pfb->vram, 0, tag_size, tag_size, 1,
+ &priv->tag_ram);
+ if (ret) {
+ priv->num_tags = 0;
+ } else {
+ u64 tag_base = (priv->tag_ram->offset << 12) + tag_margin;
+
+ tag_base += tag_align - 1;
+ tag_base /= tag_align;
+
+ nv_wr32(priv, 0x17e8d4, tag_base);
+ }
+ ret = nouveau_mm_init(&priv->tags, 0, priv->num_tags, 1);
+
+ return ret;
+}
+
+static int
nvc0_ltcg_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
struct nouveau_oclass *oclass, void *data, u32 size,
struct nouveau_object **pobject)
{
struct nvc0_ltcg_priv *priv;
+ struct nouveau_fb *pfb = nouveau_fb(parent);
int ret;
ret = nouveau_ltcg_create(parent, engine, oclass, &priv);
@@ -74,19 +174,44 @@ nvc0_ltcg_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
if (ret)
return ret;
- priv->subp_nr = nv_rd32(priv, 0x17e8dc) >> 24;
+ priv->part_nr = nv_rd32(priv, 0x022438);
+ priv->part_mask = nv_rd32(priv, 0x022554);
+
+ priv->subp_nr = nv_rd32(priv, 0x17e8dc) >> 28;
+
nv_mask(priv, 0x17e820, 0x00100000, 0x00000000); /* INTR_EN &= ~0x10 */
+ ret = nvc0_ltcg_init_tag_ram(pfb, priv);
+ if (ret)
+ return ret;
+
+ priv->base.tags_alloc = nvc0_ltcg_tags_alloc;
+ priv->base.tags_free = nvc0_ltcg_tags_free;
+ priv->base.tags_clear = nvc0_ltcg_tags_clear;
+
nv_subdev(priv)->intr = nvc0_ltcg_intr;
return 0;
}
+static void
+nvc0_ltcg_dtor(struct nouveau_object *object)
+{
+ struct nouveau_ltcg *ltcg = (struct nouveau_ltcg *)object;
+ struct nvc0_ltcg_priv *priv = (struct nvc0_ltcg_priv *)ltcg;
+ struct nouveau_fb *pfb = nouveau_fb(ltcg->base.base.parent);
+
+ nouveau_mm_fini(&priv->tags);
+ nouveau_mm_free(&pfb->vram, &priv->tag_ram);
+
+ nouveau_ltcg_destroy(ltcg);
+}
+
struct nouveau_oclass
nvc0_ltcg_oclass = {
.handle = NV_SUBDEV(LTCG, 0xc0),
.ofuncs = &(struct nouveau_ofuncs) {
.ctor = nvc0_ltcg_ctor,
- .dtor = _nouveau_ltcg_dtor,
+ .dtor = nvc0_ltcg_dtor,
.init = _nouveau_ltcg_init,
.fini = _nouveau_ltcg_fini,
},
diff --git a/drivers/gpu/drm/nouveau/core/subdev/vm/nvc0.c b/drivers/gpu/drm/nouveau/core/subdev/vm/nvc0.c
index 30c61e6..4c3b0a2 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/vm/nvc0.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/vm/nvc0.c
@@ -28,12 +28,54 @@
#include <subdev/timer.h>
#include <subdev/fb.h>
#include <subdev/vm.h>
+#include <subdev/ltcg.h>
struct nvc0_vmmgr_priv {
struct nouveau_vmmgr base;
spinlock_t lock;
};
+
+/* Map from compressed to corresponding uncompressed storage type.
+ * The value 0xff represents an invalid storage type.
+ */
+const u8 nvc0_pte_storage_type_map[256] =
+{
+ 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0xff, 0x01, /* 0x00 */
+ 0x01, 0x01, 0x01, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0x11, 0xff, 0xff, 0xff, 0xff, 0xff, 0x11, /* 0x10 */
+ 0x11, 0x11, 0x11, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x26, 0x27, /* 0x20 */
+ 0x28, 0x29, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x30 */
+ 0xff, 0xff, 0x26, 0x27, 0x28, 0x29, 0x26, 0x27,
+ 0x28, 0x29, 0xff, 0xff, 0xff, 0xff, 0x46, 0xff, /* 0x40 */
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0x46, 0x46, 0x46, 0x46, 0xff, 0xff, 0xff, /* 0x50 */
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x60 */
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x70 */
+ 0xff, 0xff, 0xff, 0x7b, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7b, 0x7b, /* 0x80 */
+ 0x7b, 0x7b, 0xff, 0x8b, 0x8c, 0x8d, 0x8e, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x90 */
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0x8b, 0x8c, 0x8d, 0x8e, 0xa7, /* 0xa0 */
+ 0xa8, 0xa9, 0xaa, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0xb0 */
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xa7,
+ 0xa8, 0xa9, 0xaa, 0xc3, 0xff, 0xff, 0xff, 0xff, /* 0xc0 */
+ 0xff, 0xff, 0xff, 0xff, 0xfe, 0xfe, 0xc3, 0xc3,
+ 0xc3, 0xc3, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0xd0 */
+ 0xfe, 0xff, 0xff, 0xfe, 0xff, 0xfe, 0xff, 0xfe,
+ 0xfe, 0xff, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xff, /* 0xe0 */
+ 0xff, 0xfe, 0xff, 0xfe, 0xff, 0xfe, 0xfe, 0xff,
+ 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, /* 0xf0 */
+ 0xfe, 0xfe, 0xfe, 0xfe, 0xff, 0xfd, 0xfe, 0xff
+};
+
+
static void
nvc0_vm_map_pgt(struct nouveau_gpuobj *pgd, u32 index,
struct nouveau_gpuobj *pgt[2])
@@ -68,10 +110,20 @@ static void
nvc0_vm_map(struct nouveau_vma *vma, struct nouveau_gpuobj *pgt,
struct nouveau_mem *mem, u32 pte, u32 cnt, u64 phys, u64 delta)
{
- u32 next = 1 << (vma->node->type - 8);
+ u64 next = 1 << (vma->node->type - 8);
phys = nvc0_vm_addr(vma, phys, mem->memtype, 0);
pte <<= 3;
+
+ if (mem->tag) {
+ struct nouveau_ltcg *ltcg =
+ nouveau_ltcg(vma->vm->vmm->base.base.parent);
+ u32 tag = mem->tag->offset + (delta >> 17);
+ phys |= (u64)tag << (32 + 12);
+ next |= (u64)1 << (32 + 12);
+ ltcg->tags_clear(ltcg, tag, cnt);
+ }
+
while (cnt--) {
nv_wo32(pgt, pte + 0, lower_32_bits(phys));
nv_wo32(pgt, pte + 4, upper_32_bits(phys));
@@ -85,10 +137,12 @@ nvc0_vm_map_sg(struct nouveau_vma *vma, struct nouveau_gpuobj *pgt,
struct nouveau_mem *mem, u32 pte, u32 cnt, dma_addr_t *list)
{
u32 target = (vma->access & NV_MEM_ACCESS_NOSNOOP) ? 7 : 5;
+ /* compressed storage types are invalid for system memory */
+ u32 memtype = nvc0_pte_storage_type_map[mem->memtype & 0xff];
pte <<= 3;
while (cnt--) {
- u64 phys = nvc0_vm_addr(vma, *list++, mem->memtype, target);
+ u64 phys = nvc0_vm_addr(vma, *list++, memtype, target);
nv_wo32(pgt, pte + 0, lower_32_bits(phys));
nv_wo32(pgt, pte + 4, upper_32_bits(phys));
pte += 8;