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path: root/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/base.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/mmu/base.c')
-rw-r--r--drivers/gpu/drm/nouveau/nvkm/subdev/mmu/base.c234
1 files changed, 148 insertions, 86 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/base.c
index 277b6ec04e24..e04a2296ecd0 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/base.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/base.c
@@ -21,10 +21,10 @@
*
* Authors: Ben Skeggs
*/
-#include <subdev/mmu.h>
-#include <subdev/fb.h>
+#include "priv.h"
#include <core/gpuobj.h>
+#include <subdev/fb.h>
void
nvkm_vm_map_at(struct nvkm_vma *vma, u64 delta, struct nvkm_mem *node)
@@ -32,12 +32,12 @@ nvkm_vm_map_at(struct nvkm_vma *vma, u64 delta, struct nvkm_mem *node)
struct nvkm_vm *vm = vma->vm;
struct nvkm_mmu *mmu = vm->mmu;
struct nvkm_mm_node *r;
- int big = vma->node->type != mmu->spg_shift;
+ int big = vma->node->type != mmu->func->spg_shift;
u32 offset = vma->node->offset + (delta >> 12);
u32 bits = vma->node->type - 12;
- u32 pde = (offset >> mmu->pgt_bits) - vm->fpde;
- u32 pte = (offset & ((1 << mmu->pgt_bits) - 1)) >> bits;
- u32 max = 1 << (mmu->pgt_bits - bits);
+ u32 pde = (offset >> mmu->func->pgt_bits) - vm->fpde;
+ u32 pte = (offset & ((1 << mmu->func->pgt_bits) - 1)) >> bits;
+ u32 max = 1 << (mmu->func->pgt_bits - bits);
u32 end, len;
delta = 0;
@@ -46,14 +46,14 @@ nvkm_vm_map_at(struct nvkm_vma *vma, u64 delta, struct nvkm_mem *node)
u32 num = r->length >> bits;
while (num) {
- struct nvkm_gpuobj *pgt = vm->pgt[pde].obj[big];
+ struct nvkm_memory *pgt = vm->pgt[pde].mem[big];
end = (pte + num);
if (unlikely(end >= max))
end = max;
len = end - pte;
- mmu->map(vma, pgt, node, pte, len, phys, delta);
+ mmu->func->map(vma, pgt, node, pte, len, phys, delta);
num -= len;
pte += len;
@@ -67,7 +67,7 @@ nvkm_vm_map_at(struct nvkm_vma *vma, u64 delta, struct nvkm_mem *node)
}
}
- mmu->flush(vm);
+ mmu->func->flush(vm);
}
static void
@@ -76,20 +76,20 @@ nvkm_vm_map_sg_table(struct nvkm_vma *vma, u64 delta, u64 length,
{
struct nvkm_vm *vm = vma->vm;
struct nvkm_mmu *mmu = vm->mmu;
- int big = vma->node->type != mmu->spg_shift;
+ int big = vma->node->type != mmu->func->spg_shift;
u32 offset = vma->node->offset + (delta >> 12);
u32 bits = vma->node->type - 12;
u32 num = length >> vma->node->type;
- u32 pde = (offset >> mmu->pgt_bits) - vm->fpde;
- u32 pte = (offset & ((1 << mmu->pgt_bits) - 1)) >> bits;
- u32 max = 1 << (mmu->pgt_bits - bits);
+ u32 pde = (offset >> mmu->func->pgt_bits) - vm->fpde;
+ u32 pte = (offset & ((1 << mmu->func->pgt_bits) - 1)) >> bits;
+ u32 max = 1 << (mmu->func->pgt_bits - bits);
unsigned m, sglen;
u32 end, len;
int i;
struct scatterlist *sg;
for_each_sg(mem->sg->sgl, sg, mem->sg->nents, i) {
- struct nvkm_gpuobj *pgt = vm->pgt[pde].obj[big];
+ struct nvkm_memory *pgt = vm->pgt[pde].mem[big];
sglen = sg_dma_len(sg) >> PAGE_SHIFT;
end = pte + sglen;
@@ -100,7 +100,7 @@ nvkm_vm_map_sg_table(struct nvkm_vma *vma, u64 delta, u64 length,
for (m = 0; m < len; m++) {
dma_addr_t addr = sg_dma_address(sg) + (m << PAGE_SHIFT);
- mmu->map_sg(vma, pgt, mem, pte, 1, &addr);
+ mmu->func->map_sg(vma, pgt, mem, pte, 1, &addr);
num--;
pte++;
@@ -115,7 +115,7 @@ nvkm_vm_map_sg_table(struct nvkm_vma *vma, u64 delta, u64 length,
for (; m < sglen; m++) {
dma_addr_t addr = sg_dma_address(sg) + (m << PAGE_SHIFT);
- mmu->map_sg(vma, pgt, mem, pte, 1, &addr);
+ mmu->func->map_sg(vma, pgt, mem, pte, 1, &addr);
num--;
pte++;
if (num == 0)
@@ -125,7 +125,7 @@ nvkm_vm_map_sg_table(struct nvkm_vma *vma, u64 delta, u64 length,
}
finish:
- mmu->flush(vm);
+ mmu->func->flush(vm);
}
static void
@@ -135,24 +135,24 @@ nvkm_vm_map_sg(struct nvkm_vma *vma, u64 delta, u64 length,
struct nvkm_vm *vm = vma->vm;
struct nvkm_mmu *mmu = vm->mmu;
dma_addr_t *list = mem->pages;
- int big = vma->node->type != mmu->spg_shift;
+ int big = vma->node->type != mmu->func->spg_shift;
u32 offset = vma->node->offset + (delta >> 12);
u32 bits = vma->node->type - 12;
u32 num = length >> vma->node->type;
- u32 pde = (offset >> mmu->pgt_bits) - vm->fpde;
- u32 pte = (offset & ((1 << mmu->pgt_bits) - 1)) >> bits;
- u32 max = 1 << (mmu->pgt_bits - bits);
+ u32 pde = (offset >> mmu->func->pgt_bits) - vm->fpde;
+ u32 pte = (offset & ((1 << mmu->func->pgt_bits) - 1)) >> bits;
+ u32 max = 1 << (mmu->func->pgt_bits - bits);
u32 end, len;
while (num) {
- struct nvkm_gpuobj *pgt = vm->pgt[pde].obj[big];
+ struct nvkm_memory *pgt = vm->pgt[pde].mem[big];
end = (pte + num);
if (unlikely(end >= max))
end = max;
len = end - pte;
- mmu->map_sg(vma, pgt, mem, pte, len, list);
+ mmu->func->map_sg(vma, pgt, mem, pte, len, list);
num -= len;
pte += len;
@@ -163,7 +163,7 @@ nvkm_vm_map_sg(struct nvkm_vma *vma, u64 delta, u64 length,
}
}
- mmu->flush(vm);
+ mmu->func->flush(vm);
}
void
@@ -183,24 +183,24 @@ nvkm_vm_unmap_at(struct nvkm_vma *vma, u64 delta, u64 length)
{
struct nvkm_vm *vm = vma->vm;
struct nvkm_mmu *mmu = vm->mmu;
- int big = vma->node->type != mmu->spg_shift;
+ int big = vma->node->type != mmu->func->spg_shift;
u32 offset = vma->node->offset + (delta >> 12);
u32 bits = vma->node->type - 12;
u32 num = length >> vma->node->type;
- u32 pde = (offset >> mmu->pgt_bits) - vm->fpde;
- u32 pte = (offset & ((1 << mmu->pgt_bits) - 1)) >> bits;
- u32 max = 1 << (mmu->pgt_bits - bits);
+ u32 pde = (offset >> mmu->func->pgt_bits) - vm->fpde;
+ u32 pte = (offset & ((1 << mmu->func->pgt_bits) - 1)) >> bits;
+ u32 max = 1 << (mmu->func->pgt_bits - bits);
u32 end, len;
while (num) {
- struct nvkm_gpuobj *pgt = vm->pgt[pde].obj[big];
+ struct nvkm_memory *pgt = vm->pgt[pde].mem[big];
end = (pte + num);
if (unlikely(end >= max))
end = max;
len = end - pte;
- mmu->unmap(pgt, pte, len);
+ mmu->func->unmap(vma, pgt, pte, len);
num -= len;
pte += len;
@@ -210,7 +210,7 @@ nvkm_vm_unmap_at(struct nvkm_vma *vma, u64 delta, u64 length)
}
}
- mmu->flush(vm);
+ mmu->func->flush(vm);
}
void
@@ -225,7 +225,7 @@ nvkm_vm_unmap_pgt(struct nvkm_vm *vm, int big, u32 fpde, u32 lpde)
struct nvkm_mmu *mmu = vm->mmu;
struct nvkm_vm_pgd *vpgd;
struct nvkm_vm_pgt *vpgt;
- struct nvkm_gpuobj *pgt;
+ struct nvkm_memory *pgt;
u32 pde;
for (pde = fpde; pde <= lpde; pde++) {
@@ -233,16 +233,14 @@ nvkm_vm_unmap_pgt(struct nvkm_vm *vm, int big, u32 fpde, u32 lpde)
if (--vpgt->refcount[big])
continue;
- pgt = vpgt->obj[big];
- vpgt->obj[big] = NULL;
+ pgt = vpgt->mem[big];
+ vpgt->mem[big] = NULL;
list_for_each_entry(vpgd, &vm->pgd_list, head) {
- mmu->map_pgt(vpgd->obj, pde, vpgt->obj);
+ mmu->func->map_pgt(vpgd->obj, pde, vpgt->mem);
}
- mutex_unlock(&nv_subdev(mmu)->mutex);
- nvkm_gpuobj_ref(NULL, &pgt);
- mutex_lock(&nv_subdev(mmu)->mutex);
+ nvkm_memory_del(&pgt);
}
}
@@ -252,34 +250,23 @@ nvkm_vm_map_pgt(struct nvkm_vm *vm, u32 pde, u32 type)
struct nvkm_mmu *mmu = vm->mmu;
struct nvkm_vm_pgt *vpgt = &vm->pgt[pde - vm->fpde];
struct nvkm_vm_pgd *vpgd;
- struct nvkm_gpuobj *pgt;
- int big = (type != mmu->spg_shift);
+ int big = (type != mmu->func->spg_shift);
u32 pgt_size;
int ret;
- pgt_size = (1 << (mmu->pgt_bits + 12)) >> type;
+ pgt_size = (1 << (mmu->func->pgt_bits + 12)) >> type;
pgt_size *= 8;
- mutex_unlock(&nv_subdev(mmu)->mutex);
- ret = nvkm_gpuobj_new(nv_object(vm->mmu), NULL, pgt_size, 0x1000,
- NVOBJ_FLAG_ZERO_ALLOC, &pgt);
- mutex_lock(&nv_subdev(mmu)->mutex);
+ ret = nvkm_memory_new(mmu->subdev.device, NVKM_MEM_TARGET_INST,
+ pgt_size, 0x1000, true, &vpgt->mem[big]);
if (unlikely(ret))
return ret;
- /* someone beat us to filling the PDE while we didn't have the lock */
- if (unlikely(vpgt->refcount[big]++)) {
- mutex_unlock(&nv_subdev(mmu)->mutex);
- nvkm_gpuobj_ref(NULL, &pgt);
- mutex_lock(&nv_subdev(mmu)->mutex);
- return 0;
- }
-
- vpgt->obj[big] = pgt;
list_for_each_entry(vpgd, &vm->pgd_list, head) {
- mmu->map_pgt(vpgd->obj, pde, vpgt->obj);
+ mmu->func->map_pgt(vpgd->obj, pde, vpgt->mem);
}
+ vpgt->refcount[big]++;
return 0;
}
@@ -293,20 +280,20 @@ nvkm_vm_get(struct nvkm_vm *vm, u64 size, u32 page_shift, u32 access,
u32 fpde, lpde, pde;
int ret;
- mutex_lock(&nv_subdev(mmu)->mutex);
+ mutex_lock(&vm->mutex);
ret = nvkm_mm_head(&vm->mm, 0, page_shift, msize, msize, align,
&vma->node);
if (unlikely(ret != 0)) {
- mutex_unlock(&nv_subdev(mmu)->mutex);
+ mutex_unlock(&vm->mutex);
return ret;
}
- fpde = (vma->node->offset >> mmu->pgt_bits);
- lpde = (vma->node->offset + vma->node->length - 1) >> mmu->pgt_bits;
+ fpde = (vma->node->offset >> mmu->func->pgt_bits);
+ lpde = (vma->node->offset + vma->node->length - 1) >> mmu->func->pgt_bits;
for (pde = fpde; pde <= lpde; pde++) {
struct nvkm_vm_pgt *vpgt = &vm->pgt[pde - vm->fpde];
- int big = (vma->node->type != mmu->spg_shift);
+ int big = (vma->node->type != mmu->func->spg_shift);
if (likely(vpgt->refcount[big])) {
vpgt->refcount[big]++;
@@ -318,11 +305,11 @@ nvkm_vm_get(struct nvkm_vm *vm, u64 size, u32 page_shift, u32 access,
if (pde != fpde)
nvkm_vm_unmap_pgt(vm, big, fpde, pde - 1);
nvkm_mm_free(&vm->mm, &vma->node);
- mutex_unlock(&nv_subdev(mmu)->mutex);
+ mutex_unlock(&vm->mutex);
return ret;
}
}
- mutex_unlock(&nv_subdev(mmu)->mutex);
+ mutex_unlock(&vm->mutex);
vma->vm = NULL;
nvkm_vm_ref(vm, &vma->vm, NULL);
@@ -334,27 +321,49 @@ nvkm_vm_get(struct nvkm_vm *vm, u64 size, u32 page_shift, u32 access,
void
nvkm_vm_put(struct nvkm_vma *vma)
{
- struct nvkm_vm *vm = vma->vm;
- struct nvkm_mmu *mmu = vm->mmu;
+ struct nvkm_mmu *mmu;
+ struct nvkm_vm *vm;
u32 fpde, lpde;
if (unlikely(vma->node == NULL))
return;
- fpde = (vma->node->offset >> mmu->pgt_bits);
- lpde = (vma->node->offset + vma->node->length - 1) >> mmu->pgt_bits;
+ vm = vma->vm;
+ mmu = vm->mmu;
+
+ fpde = (vma->node->offset >> mmu->func->pgt_bits);
+ lpde = (vma->node->offset + vma->node->length - 1) >> mmu->func->pgt_bits;
- mutex_lock(&nv_subdev(mmu)->mutex);
- nvkm_vm_unmap_pgt(vm, vma->node->type != mmu->spg_shift, fpde, lpde);
+ mutex_lock(&vm->mutex);
+ nvkm_vm_unmap_pgt(vm, vma->node->type != mmu->func->spg_shift, fpde, lpde);
nvkm_mm_free(&vm->mm, &vma->node);
- mutex_unlock(&nv_subdev(mmu)->mutex);
+ mutex_unlock(&vm->mutex);
nvkm_vm_ref(NULL, &vma->vm, NULL);
}
int
+nvkm_vm_boot(struct nvkm_vm *vm, u64 size)
+{
+ struct nvkm_mmu *mmu = vm->mmu;
+ struct nvkm_memory *pgt;
+ int ret;
+
+ ret = nvkm_memory_new(mmu->subdev.device, NVKM_MEM_TARGET_INST,
+ (size >> mmu->func->spg_shift) * 8, 0x1000, true, &pgt);
+ if (ret == 0) {
+ vm->pgt[0].refcount[0] = 1;
+ vm->pgt[0].mem[0] = pgt;
+ nvkm_memory_boot(pgt, vm);
+ }
+
+ return ret;
+}
+
+int
nvkm_vm_create(struct nvkm_mmu *mmu, u64 offset, u64 length, u64 mm_offset,
- u32 block, struct nvkm_vm **pvm)
+ u32 block, struct lock_class_key *key, struct nvkm_vm **pvm)
{
+ static struct lock_class_key _key;
struct nvkm_vm *vm;
u64 mm_length = (offset + length) - mm_offset;
int ret;
@@ -363,11 +372,12 @@ nvkm_vm_create(struct nvkm_mmu *mmu, u64 offset, u64 length, u64 mm_offset,
if (!vm)
return -ENOMEM;
+ __mutex_init(&vm->mutex, "&vm->mutex", key ? key : &_key);
INIT_LIST_HEAD(&vm->pgd_list);
vm->mmu = mmu;
kref_init(&vm->refcount);
- vm->fpde = offset >> (mmu->pgt_bits + 12);
- vm->lpde = (offset + length - 1) >> (mmu->pgt_bits + 12);
+ vm->fpde = offset >> (mmu->func->pgt_bits + 12);
+ vm->lpde = (offset + length - 1) >> (mmu->func->pgt_bits + 12);
vm->pgt = vzalloc((vm->lpde - vm->fpde + 1) * sizeof(*vm->pgt));
if (!vm->pgt) {
@@ -390,10 +400,12 @@ nvkm_vm_create(struct nvkm_mmu *mmu, u64 offset, u64 length, u64 mm_offset,
int
nvkm_vm_new(struct nvkm_device *device, u64 offset, u64 length, u64 mm_offset,
- struct nvkm_vm **pvm)
+ struct lock_class_key *key, struct nvkm_vm **pvm)
{
- struct nvkm_mmu *mmu = nvkm_mmu(device);
- return mmu->create(mmu, offset, length, mm_offset, pvm);
+ struct nvkm_mmu *mmu = device->mmu;
+ if (!mmu->func->create)
+ return -EINVAL;
+ return mmu->func->create(mmu, offset, length, mm_offset, key, pvm);
}
static int
@@ -410,38 +422,33 @@ nvkm_vm_link(struct nvkm_vm *vm, struct nvkm_gpuobj *pgd)
if (!vpgd)
return -ENOMEM;
- nvkm_gpuobj_ref(pgd, &vpgd->obj);
+ vpgd->obj = pgd;
- mutex_lock(&nv_subdev(mmu)->mutex);
+ mutex_lock(&vm->mutex);
for (i = vm->fpde; i <= vm->lpde; i++)
- mmu->map_pgt(pgd, i, vm->pgt[i - vm->fpde].obj);
+ mmu->func->map_pgt(pgd, i, vm->pgt[i - vm->fpde].mem);
list_add(&vpgd->head, &vm->pgd_list);
- mutex_unlock(&nv_subdev(mmu)->mutex);
+ mutex_unlock(&vm->mutex);
return 0;
}
static void
nvkm_vm_unlink(struct nvkm_vm *vm, struct nvkm_gpuobj *mpgd)
{
- struct nvkm_mmu *mmu = vm->mmu;
struct nvkm_vm_pgd *vpgd, *tmp;
- struct nvkm_gpuobj *pgd = NULL;
if (!mpgd)
return;
- mutex_lock(&nv_subdev(mmu)->mutex);
+ mutex_lock(&vm->mutex);
list_for_each_entry_safe(vpgd, tmp, &vm->pgd_list, head) {
if (vpgd->obj == mpgd) {
- pgd = vpgd->obj;
list_del(&vpgd->head);
kfree(vpgd);
break;
}
}
- mutex_unlock(&nv_subdev(mmu)->mutex);
-
- nvkm_gpuobj_ref(NULL, &pgd);
+ mutex_unlock(&vm->mutex);
}
static void
@@ -478,3 +485,58 @@ nvkm_vm_ref(struct nvkm_vm *ref, struct nvkm_vm **ptr, struct nvkm_gpuobj *pgd)
*ptr = ref;
return 0;
}
+
+static int
+nvkm_mmu_oneinit(struct nvkm_subdev *subdev)
+{
+ struct nvkm_mmu *mmu = nvkm_mmu(subdev);
+ if (mmu->func->oneinit)
+ return mmu->func->oneinit(mmu);
+ return 0;
+}
+
+static int
+nvkm_mmu_init(struct nvkm_subdev *subdev)
+{
+ struct nvkm_mmu *mmu = nvkm_mmu(subdev);
+ if (mmu->func->init)
+ mmu->func->init(mmu);
+ return 0;
+}
+
+static void *
+nvkm_mmu_dtor(struct nvkm_subdev *subdev)
+{
+ struct nvkm_mmu *mmu = nvkm_mmu(subdev);
+ if (mmu->func->dtor)
+ return mmu->func->dtor(mmu);
+ return mmu;
+}
+
+static const struct nvkm_subdev_func
+nvkm_mmu = {
+ .dtor = nvkm_mmu_dtor,
+ .oneinit = nvkm_mmu_oneinit,
+ .init = nvkm_mmu_init,
+};
+
+void
+nvkm_mmu_ctor(const struct nvkm_mmu_func *func, struct nvkm_device *device,
+ int index, struct nvkm_mmu *mmu)
+{
+ nvkm_subdev_ctor(&nvkm_mmu, device, index, 0, &mmu->subdev);
+ mmu->func = func;
+ mmu->limit = func->limit;
+ mmu->dma_bits = func->dma_bits;
+ mmu->lpg_shift = func->lpg_shift;
+}
+
+int
+nvkm_mmu_new_(const struct nvkm_mmu_func *func, struct nvkm_device *device,
+ int index, struct nvkm_mmu **pmmu)
+{
+ if (!(*pmmu = kzalloc(sizeof(**pmmu), GFP_KERNEL)))
+ return -ENOMEM;
+ nvkm_mmu_ctor(func, device, index, *pmmu);
+ return 0;
+}
generated by cgit v1.2.3-70-g09d2 (git 2.48.1) at 2025-03-24 19:43:39 +0000