drm/nv50: implement BAR1/BAR3 management on top of new VM code
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c
index 5a71ca4..4d14203 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
@@ -32,6 +32,8 @@
#include "nouveau_drm.h"
#include "nouveau_drv.h"
#include "nouveau_dma.h"
+#include "nouveau_mm.h"
+#include "nouveau_vm.h"
#include <linux/log2.h>
#include <linux/slab.h>
@@ -386,10 +388,13 @@
man->default_caching = TTM_PL_FLAG_CACHED;
break;
case TTM_PL_VRAM:
- if (dev_priv->card_type == NV_50)
+ if (dev_priv->card_type == NV_50) {
man->func = &nouveau_vram_manager;
- else
+ man->io_reserve_fastpath = false;
+ man->use_io_reserve_lru = true;
+ } else {
man->func = &ttm_bo_manager_func;
+ }
man->flags = TTM_MEMTYPE_FLAG_FIXED |
TTM_MEMTYPE_FLAG_MAPPABLE;
man->available_caching = TTM_PL_FLAG_UNCACHED |
@@ -858,6 +863,7 @@
struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
struct drm_nouveau_private *dev_priv = nouveau_bdev(bdev);
struct drm_device *dev = dev_priv->dev;
+ int ret;
mem->bus.addr = NULL;
mem->bus.offset = 0;
@@ -880,9 +886,32 @@
#endif
break;
case TTM_PL_VRAM:
- mem->bus.offset = mem->start << PAGE_SHIFT;
+ {
+ struct nouveau_vram *vram = mem->mm_node;
+
+ if (!dev_priv->bar1_vm) {
+ mem->bus.offset = mem->start << PAGE_SHIFT;
+ mem->bus.base = pci_resource_start(dev->pdev, 1);
+ mem->bus.is_iomem = true;
+ break;
+ }
+
+ ret = nouveau_vm_get(dev_priv->bar1_vm, mem->bus.size, 12,
+ NV_MEM_ACCESS_RW, &vram->bar_vma);
+ if (ret)
+ return ret;
+
+ nouveau_vm_map(&vram->bar_vma, vram);
+ if (ret) {
+ nouveau_vm_put(&vram->bar_vma);
+ return ret;
+ }
+
+ mem->bus.offset = vram->bar_vma.offset;
+ mem->bus.offset -= 0x0020000000ULL;
mem->bus.base = pci_resource_start(dev->pdev, 1);
mem->bus.is_iomem = true;
+ }
break;
default:
return -EINVAL;
@@ -893,6 +922,17 @@
static void
nouveau_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem)
{
+ struct drm_nouveau_private *dev_priv = nouveau_bdev(bdev);
+ struct nouveau_vram *vram = mem->mm_node;
+
+ if (!dev_priv->bar1_vm || mem->mem_type != TTM_PL_VRAM)
+ return;
+
+ if (!vram->bar_vma.node)
+ return;
+
+ nouveau_vm_unmap(&vram->bar_vma);
+ nouveau_vm_put(&vram->bar_vma);
}
static int
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h
index ce1dde4..452a865 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
@@ -55,7 +55,10 @@
#include "nouveau_reg.h"
#include "nouveau_bios.h"
#include "nouveau_util.h"
+
struct nouveau_grctx;
+struct nouveau_vram;
+#include "nouveau_vm.h"
#define MAX_NUM_DCB_ENTRIES 16
@@ -69,6 +72,8 @@
struct nouveau_vram {
struct drm_device *dev;
+ struct nouveau_vma bar_vma;
+
struct list_head regions;
u32 memtype;
u64 offset;
@@ -244,6 +249,7 @@
void *pgraph_ctx;
/* NV50 VM */
+ struct nouveau_vm *vm;
struct nouveau_gpuobj *vm_pd;
struct nouveau_gpuobj *vm_gart_pt;
struct nouveau_gpuobj *vm_vram_pt[NV50_VM_VRAM_NR];
@@ -701,6 +707,10 @@
uint64_t fb_aper_free;
int fb_mtrr;
+ /* BAR control (NV50-) */
+ struct nouveau_vm *bar1_vm;
+ struct nouveau_vm *bar3_vm;
+
/* G8x/G9x virtual address space */
uint64_t vm_gart_base;
uint64_t vm_gart_size;
diff --git a/drivers/gpu/drm/nouveau/nv50_instmem.c b/drivers/gpu/drm/nouveau/nv50_instmem.c
index 4eb2f08..4ba8f74 100644
--- a/drivers/gpu/drm/nouveau/nv50_instmem.c
+++ b/drivers/gpu/drm/nouveau/nv50_instmem.c
@@ -31,12 +31,16 @@
#include "nouveau_drv.h"
#include "nouveau_vm.h"
+#define BAR1_VM_BASE 0x0020000000ULL
+#define BAR1_VM_SIZE pci_resource_len(dev->pdev, 1)
+#define BAR3_VM_BASE 0x0000000000ULL
+#define BAR3_VM_SIZE pci_resource_len(dev->pdev, 3)
+
struct nv50_instmem_priv {
uint32_t save1700[5]; /* 0x1700->0x1710 */
- struct nouveau_gpuobj *pramin_pt;
- struct nouveau_gpuobj *pramin_bar;
- struct nouveau_gpuobj *fb_bar;
+ struct nouveau_gpuobj *bar1_dmaobj;
+ struct nouveau_gpuobj *bar3_dmaobj;
};
static void
@@ -50,6 +54,7 @@
return;
nouveau_gpuobj_ref(NULL, &chan->ramfc);
+ nouveau_vm_ref(NULL, &chan->vm, chan->vm_pd);
nouveau_gpuobj_ref(NULL, &chan->vm_pd);
if (chan->ramin_heap.free_stack.next)
drm_mm_takedown(&chan->ramin_heap);
@@ -58,14 +63,14 @@
}
static int
-nv50_channel_new(struct drm_device *dev, u32 size,
+nv50_channel_new(struct drm_device *dev, u32 size, struct nouveau_vm *vm,
struct nouveau_channel **pchan)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
u32 pgd = (dev_priv->chipset == 0x50) ? 0x1400 : 0x0200;
u32 fc = (dev_priv->chipset == 0x50) ? 0x0000 : 0x4200;
struct nouveau_channel *chan;
- int ret;
+ int ret, i;
chan = kzalloc(sizeof(*chan), GFP_KERNEL);
if (!chan)
@@ -94,6 +99,17 @@
return ret;
}
+ for (i = 0; i < 0x4000; i += 8) {
+ nv_wo32(chan->vm_pd, i + 0, 0x00000000);
+ nv_wo32(chan->vm_pd, i + 4, 0xdeadcafe);
+ }
+
+ ret = nouveau_vm_ref(vm, &chan->vm, chan->vm_pd);
+ if (ret) {
+ nv50_channel_del(&chan);
+ return ret;
+ }
+
ret = nouveau_gpuobj_new_fake(dev, chan->ramin->pinst == ~0 ? ~0 :
chan->ramin->pinst + fc,
chan->ramin->vinst + fc, 0x100,
@@ -113,6 +129,7 @@
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nv50_instmem_priv *priv;
struct nouveau_channel *chan;
+ struct nouveau_vm *vm;
int ret, i;
u32 tmp;
@@ -129,53 +146,75 @@
ret = drm_mm_init(&dev_priv->ramin_heap, 0, dev_priv->ramin_size);
if (ret) {
NV_ERROR(dev, "Failed to init RAMIN heap\n");
- return -ENOMEM;
+ goto error;
}
- /* we need a channel to plug into the hw to control the BARs */
- ret = nv50_channel_new(dev, 128*1024, &dev_priv->channels.ptr[0]);
+ /* BAR3 */
+ ret = nouveau_vm_new(dev, BAR3_VM_BASE, BAR3_VM_SIZE, BAR3_VM_BASE,
+ 29, 12, 16, &dev_priv->bar3_vm);
if (ret)
- return ret;
- chan = dev_priv->channels.ptr[127] = dev_priv->channels.ptr[0];
+ goto error;
- /* allocate page table for PRAMIN BAR */
- ret = nouveau_gpuobj_new(dev, chan, (dev_priv->ramin_size >> 12) * 8,
- 0x1000, NVOBJ_FLAG_ZERO_ALLOC,
- &priv->pramin_pt);
+ ret = nouveau_gpuobj_new(dev, NULL, (BAR3_VM_SIZE >> 12) * 8,
+ 0x1000, NVOBJ_FLAG_DONT_MAP |
+ NVOBJ_FLAG_ZERO_ALLOC,
+ &dev_priv->bar3_vm->pgt[0].obj);
if (ret)
- return ret;
+ goto error;
+ dev_priv->bar3_vm->pgt[0].page_shift = 12;
+ dev_priv->bar3_vm->pgt[0].refcount = 1;
- nv_wo32(chan->vm_pd, 0x0000, priv->pramin_pt->vinst | 0x63);
- nv_wo32(chan->vm_pd, 0x0004, 0);
+ nv50_instmem_map(dev_priv->bar3_vm->pgt[0].obj);
- /* DMA object for PRAMIN BAR */
- ret = nouveau_gpuobj_new(dev, chan, 6*4, 16, 0, &priv->pramin_bar);
+ ret = nv50_channel_new(dev, 128 * 1024, dev_priv->bar3_vm, &chan);
if (ret)
- return ret;
- nv_wo32(priv->pramin_bar, 0x00, 0x7fc00000);
- nv_wo32(priv->pramin_bar, 0x04, dev_priv->ramin_size - 1);
- nv_wo32(priv->pramin_bar, 0x08, 0x00000000);
- nv_wo32(priv->pramin_bar, 0x0c, 0x00000000);
- nv_wo32(priv->pramin_bar, 0x10, 0x00000000);
- nv_wo32(priv->pramin_bar, 0x14, 0x00000000);
+ goto error;
+ dev_priv->channels.ptr[0] = dev_priv->channels.ptr[127] = chan;
- nv50_instmem_map(chan->ramin);
+ ret = nv50_gpuobj_dma_new(chan, 0x0000, BAR3_VM_BASE, BAR3_VM_SIZE,
+ NV_MEM_TARGET_VM, NV_MEM_ACCESS_VM,
+ NV_MEM_TYPE_VM, NV_MEM_COMP_VM,
+ &priv->bar3_dmaobj);
+ if (ret)
+ goto error;
- /* poke regs... */
nv_wr32(dev, 0x001704, 0x00000000 | (chan->ramin->vinst >> 12));
nv_wr32(dev, 0x001704, 0x40000000 | (chan->ramin->vinst >> 12));
- nv_wr32(dev, 0x00170c, 0x80000000 | (priv->pramin_bar->cinst >> 4));
+ nv_wr32(dev, 0x00170c, 0x80000000 | (priv->bar3_dmaobj->cinst >> 4));
tmp = nv_ri32(dev, 0);
nv_wi32(dev, 0, ~tmp);
if (nv_ri32(dev, 0) != ~tmp) {
NV_ERROR(dev, "PRAMIN readback failed\n");
- return -EIO;
+ ret = -EIO;
+ goto error;
}
nv_wi32(dev, 0, tmp);
dev_priv->ramin_available = true;
+ /* BAR1 */
+ ret = nouveau_vm_new(dev, BAR1_VM_BASE, BAR1_VM_SIZE, BAR1_VM_BASE,
+ 29, 12, 16, &vm);
+ if (ret)
+ goto error;
+
+ ret = nouveau_vm_ref(vm, &dev_priv->bar1_vm, chan->vm_pd);
+ if (ret)
+ goto error;
+ nouveau_vm_ref(NULL, &vm, NULL);
+
+ ret = nv50_gpuobj_dma_new(chan, 0x0000, BAR1_VM_BASE, BAR1_VM_SIZE,
+ NV_MEM_TARGET_VM, NV_MEM_ACCESS_VM,
+ NV_MEM_TYPE_VM, NV_MEM_COMP_VM,
+ &priv->bar1_dmaobj);
+ if (ret)
+ goto error;
+
+ nv_wr32(dev, 0x001708, 0x80000000 | (priv->bar1_dmaobj->cinst >> 4));
+ for (i = 0; i < 8; i++)
+ nv_wr32(dev, 0x1900 + (i*4), 0);
+
/* Determine VM layout */
dev_priv->vm_gart_base = roundup(NV50_VM_BLOCK, NV50_VM_BLOCK);
dev_priv->vm_gart_size = NV50_VM_BLOCK;
@@ -200,38 +239,19 @@
for (i = 0; i < dev_priv->vm_vram_pt_nr; i++) {
ret = nouveau_gpuobj_new(dev, NULL, NV50_VM_BLOCK / 0x10000 * 8,
0, NVOBJ_FLAG_ZERO_ALLOC,
- &chan->vm_vram_pt[i]);
+ &dev_priv->vm_vram_pt[i]);
if (ret) {
NV_ERROR(dev, "Error creating VRAM PGT: %d\n", ret);
dev_priv->vm_vram_pt_nr = i;
return ret;
}
- dev_priv->vm_vram_pt[i] = chan->vm_vram_pt[i];
-
- nv_wo32(chan->vm_pd, 0x10 + (i*8),
- chan->vm_vram_pt[i]->vinst | 0x61);
- nv_wo32(chan->vm_pd, 0x14 + (i*8), 0);
}
- /* DMA object for FB BAR */
- ret = nouveau_gpuobj_new(dev, chan, 6*4, 16, 0, &priv->fb_bar);
- if (ret)
- return ret;
- nv_wo32(priv->fb_bar, 0x00, 0x7fc00000);
- nv_wo32(priv->fb_bar, 0x04, 0x40000000 +
- pci_resource_len(dev->pdev, 1) - 1);
- nv_wo32(priv->fb_bar, 0x08, 0x40000000);
- nv_wo32(priv->fb_bar, 0x0c, 0x00000000);
- nv_wo32(priv->fb_bar, 0x10, 0x00000000);
- nv_wo32(priv->fb_bar, 0x14, 0x00000000);
-
- dev_priv->engine.instmem.flush(dev);
-
- nv_wr32(dev, 0x001708, 0x80000000 | (priv->fb_bar->cinst >> 4));
- for (i = 0; i < 8; i++)
- nv_wr32(dev, 0x1900 + (i*4), 0);
-
return 0;
+
+error:
+ nv50_instmem_takedown(dev);
+ return ret;
}
void
@@ -249,23 +269,25 @@
dev_priv->ramin_available = false;
- /* Restore state from before init */
+ for (i = 0; i < dev_priv->vm_vram_pt_nr; i++)
+ nouveau_gpuobj_ref(NULL, &dev_priv->vm_vram_pt[i]);
+ dev_priv->vm_vram_pt_nr = 0;
+
for (i = 0x1700; i <= 0x1710; i += 4)
nv_wr32(dev, i, priv->save1700[(i - 0x1700) / 4]);
- nouveau_gpuobj_ref(NULL, &priv->fb_bar);
- nouveau_gpuobj_ref(NULL, &priv->pramin_bar);
- nouveau_gpuobj_ref(NULL, &priv->pramin_pt);
+ nouveau_gpuobj_ref(NULL, &priv->bar3_dmaobj);
+ nouveau_gpuobj_ref(NULL, &priv->bar1_dmaobj);
- /* Destroy dummy channel */
- if (chan) {
- for (i = 0; i < dev_priv->vm_vram_pt_nr; i++)
- nouveau_gpuobj_ref(NULL, &chan->vm_vram_pt[i]);
- dev_priv->vm_vram_pt_nr = 0;
+ nouveau_vm_ref(NULL, &dev_priv->bar1_vm, chan->vm_pd);
+ dev_priv->channels.ptr[127] = 0;
+ nv50_channel_del(&dev_priv->channels.ptr[0]);
- nv50_channel_del(&dev_priv->channels.ptr[0]);
- dev_priv->channels.ptr[127] = NULL;
- }
+ nouveau_gpuobj_ref(NULL, &dev_priv->bar3_vm->pgt[0].obj);
+ nouveau_vm_ref(NULL, &dev_priv->bar3_vm, NULL);
+
+ if (dev_priv->ramin_heap.free_stack.next)
+ drm_mm_takedown(&dev_priv->ramin_heap);
dev_priv->engine.instmem.priv = NULL;
kfree(priv);
@@ -293,9 +315,9 @@
nv_wr32(dev, NV50_PUNK_UNK1710, 0);
nv_wr32(dev, NV50_PUNK_BAR_CFG_BASE, (chan->ramin->vinst >> 12) |
NV50_PUNK_BAR_CFG_BASE_VALID);
- nv_wr32(dev, NV50_PUNK_BAR1_CTXDMA, (priv->fb_bar->cinst >> 4) |
+ nv_wr32(dev, NV50_PUNK_BAR1_CTXDMA, (priv->bar1_dmaobj->cinst >> 4) |
NV50_PUNK_BAR1_CTXDMA_VALID);
- nv_wr32(dev, NV50_PUNK_BAR3_CTXDMA, (priv->pramin_bar->cinst >> 4) |
+ nv_wr32(dev, NV50_PUNK_BAR3_CTXDMA, (priv->bar3_dmaobj->cinst >> 4) |
NV50_PUNK_BAR3_CTXDMA_VALID);
for (i = 0; i < 8; i++)
@@ -305,8 +327,7 @@
}
struct nv50_gpuobj_node {
- struct nouveau_bo *vram;
- struct drm_mm_node *ramin;
+ struct nouveau_vram *vram;
u32 align;
};
@@ -323,23 +344,17 @@
return -ENOMEM;
node->align = align;
- ret = nouveau_bo_new(dev, NULL, size, align, TTM_PL_FLAG_VRAM,
- 0, 0x0000, true, false, &node->vram);
+ size = (size + 4095) & ~4095;
+ align = max(align, (u32)4096);
+
+ ret = nv50_vram_new(dev, size, align, 0, 0, &node->vram);
if (ret) {
- NV_ERROR(dev, "error getting PRAMIN backing pages: %d\n", ret);
- WARN_ON(1);
+ kfree(node);
return ret;
}
- ret = nouveau_bo_pin(node->vram, TTM_PL_FLAG_VRAM);
- if (ret) {
- NV_ERROR(dev, "error pinning PRAMIN backing VRAM: %d\n", ret);
- nouveau_bo_ref(NULL, &node->vram);
- return ret;
- }
-
- gpuobj->vinst = node->vram->bo.mem.start << PAGE_SHIFT;
- gpuobj->size = node->vram->bo.mem.num_pages << PAGE_SHIFT;
+ gpuobj->vinst = node->vram->offset;
+ gpuobj->size = size;
gpuobj->node = node;
return 0;
}
@@ -347,13 +362,13 @@
void
nv50_instmem_put(struct nouveau_gpuobj *gpuobj)
{
+ struct drm_device *dev = gpuobj->dev;
struct nv50_gpuobj_node *node;
node = gpuobj->node;
gpuobj->node = NULL;
- nouveau_bo_unpin(node->vram);
- nouveau_bo_ref(NULL, &node->vram);
+ nv50_vram_del(dev, &node->vram);
kfree(node);
}
@@ -361,83 +376,28 @@
nv50_instmem_map(struct nouveau_gpuobj *gpuobj)
{
struct drm_nouveau_private *dev_priv = gpuobj->dev->dev_private;
- struct nv50_instmem_priv *priv = dev_priv->engine.instmem.priv;
struct nv50_gpuobj_node *node = gpuobj->node;
- struct drm_device *dev = gpuobj->dev;
- struct drm_mm_node *ramin = NULL;
- u32 pte, pte_end;
- u64 vram;
+ int ret;
- do {
- if (drm_mm_pre_get(&dev_priv->ramin_heap))
- return -ENOMEM;
+ ret = nouveau_vm_get(dev_priv->bar3_vm, gpuobj->size, 12,
+ NV_MEM_ACCESS_RW, &node->vram->bar_vma);
+ if (ret)
+ return ret;
- spin_lock(&dev_priv->ramin_lock);
- ramin = drm_mm_search_free(&dev_priv->ramin_heap, gpuobj->size,
- node->align, 0);
- if (ramin == NULL) {
- spin_unlock(&dev_priv->ramin_lock);
- return -ENOMEM;
- }
-
- ramin = drm_mm_get_block_atomic(ramin, gpuobj->size, node->align);
- spin_unlock(&dev_priv->ramin_lock);
- } while (ramin == NULL);
-
- pte = (ramin->start >> 12) << 1;
- pte_end = ((ramin->size >> 12) << 1) + pte;
- vram = gpuobj->vinst;
-
- NV_DEBUG(dev, "pramin=0x%lx, pte=%d, pte_end=%d\n",
- ramin->start, pte, pte_end);
- NV_DEBUG(dev, "first vram page: 0x%010llx\n", gpuobj->vinst);
-
- vram |= 1;
- if (dev_priv->vram_sys_base) {
- vram += dev_priv->vram_sys_base;
- vram |= 0x30;
- }
-
- while (pte < pte_end) {
- nv_wo32(priv->pramin_pt, (pte * 4) + 0, lower_32_bits(vram));
- nv_wo32(priv->pramin_pt, (pte * 4) + 4, upper_32_bits(vram));
- vram += 0x1000;
- pte += 2;
- }
- dev_priv->engine.instmem.flush(dev);
-
- nv50_vm_flush_engine(dev, 6);
-
- node->ramin = ramin;
- gpuobj->pinst = ramin->start;
+ nouveau_vm_map(&node->vram->bar_vma, node->vram);
+ gpuobj->pinst = node->vram->bar_vma.offset;
return 0;
}
void
nv50_instmem_unmap(struct nouveau_gpuobj *gpuobj)
{
- struct drm_nouveau_private *dev_priv = gpuobj->dev->dev_private;
- struct nv50_instmem_priv *priv = dev_priv->engine.instmem.priv;
struct nv50_gpuobj_node *node = gpuobj->node;
- u32 pte, pte_end;
- if (!node->ramin || !dev_priv->ramin_available)
- return;
-
- pte = (node->ramin->start >> 12) << 1;
- pte_end = ((node->ramin->size >> 12) << 1) + pte;
-
- while (pte < pte_end) {
- nv_wo32(priv->pramin_pt, (pte * 4) + 0, 0x00000000);
- nv_wo32(priv->pramin_pt, (pte * 4) + 4, 0x00000000);
- pte += 2;
+ if (node->vram->bar_vma.node) {
+ nouveau_vm_unmap(&node->vram->bar_vma);
+ nouveau_vm_put(&node->vram->bar_vma);
}
- dev_priv->engine.instmem.flush(gpuobj->dev);
-
- spin_lock(&dev_priv->ramin_lock);
- drm_mm_put_block(node->ramin);
- node->ramin = NULL;
- spin_unlock(&dev_priv->ramin_lock);
}
void
diff --git a/drivers/gpu/drm/nouveau/nv50_vm.c b/drivers/gpu/drm/nouveau/nv50_vm.c
index ab6c3d0..efc63c0 100644
--- a/drivers/gpu/drm/nouveau/nv50_vm.c
+++ b/drivers/gpu/drm/nouveau/nv50_vm.c
@@ -151,7 +151,6 @@
struct nouveau_instmem_engine *pinstmem = &dev_priv->engine.instmem;
pinstmem->flush(vm->dev);
-
nv50_vm_flush_engine(vm->dev, 6);
}