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gpu: nvgpu: Split VM implementation out

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This patch begins splitting out the VM implementation from mm_gk20a.c and
moves it to common/linux/vm.c and common/mm/vm.c. This split is necessary
because the VM code has two portions: first, an interface for the OS
specific code to use (i.e userspace mappings), and second, a set of APIs
for the driver to use (init, cleanup, etc) which are not OS specific.

This is only the beginning of the split - there's still a lot of things
that need to be carefully moved around.

JIRA NVGPU-12
JIRA NVGPU-30

Change-Id: I3b57cba245d7daf9e4326a143b9c6217e0f28c96
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: http://git-master/r/1477743
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Alex Waterman
2017-04-24 15:26:00 -07:00
committed by mobile promotions
parent d37e8f7dcf
commit 014ace5a85
13 changed files with 661 additions and 630 deletions
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65
drivers/gpu/nvgpu/common/mm/vm.c
View File

@@ -23,6 +23,11 @@
#include "gk20a/gk20a.h"
#include "gk20a/mm_gk20a.h"
int vm_aspace_id(struct vm_gk20a *vm)
{
return vm->as_share ? vm->as_share->id : -1;
}
void nvgpu_vm_mapping_batch_start(struct vm_gk20a_mapping_batch *mapping_batch)
{
memset(mapping_batch, 0, sizeof(*mapping_batch));
@@ -52,7 +57,7 @@ void nvgpu_vm_mapping_batch_finish(struct vm_gk20a *vm,
void nvgpu_vm_remove_support_nofree(struct vm_gk20a *vm)
{
struct mapped_buffer_node *mapped_buffer;
struct nvgpu_mapped_buf *mapped_buffer;
struct vm_reserved_va_node *va_node, *va_node_tmp;
struct nvgpu_rbtree_node *node = NULL;
struct gk20a *g = vm->mm->g;
@@ -118,7 +123,7 @@ void nvgpu_vm_put(struct vm_gk20a *vm)
kref_put(&vm->ref, nvgpu_vm_remove_support_kref);
}
void gk20a_remove_vm(struct vm_gk20a *vm, struct nvgpu_mem *inst_block)
void nvgpu_remove_vm(struct vm_gk20a *vm, struct nvgpu_mem *inst_block)
{
struct gk20a *g = vm->mm->g;
@@ -127,3 +132,59 @@ void gk20a_remove_vm(struct vm_gk20a *vm, struct nvgpu_mem *inst_block)
gk20a_free_inst_block(g, inst_block);
nvgpu_vm_remove_support_nofree(vm);
}
int nvgpu_insert_mapped_buf(struct vm_gk20a *vm,
struct nvgpu_mapped_buf *mapped_buffer)
{
mapped_buffer->node.key_start = mapped_buffer->addr;
mapped_buffer->node.key_end = mapped_buffer->addr + mapped_buffer->size;
nvgpu_rbtree_insert(&mapped_buffer->node, &vm->mapped_buffers);
return 0;
}
void nvgpu_remove_mapped_buf(struct vm_gk20a *vm,
struct nvgpu_mapped_buf *mapped_buffer)
{
nvgpu_rbtree_unlink(&mapped_buffer->node, &vm->mapped_buffers);
}
struct nvgpu_mapped_buf *__nvgpu_vm_find_mapped_buf(
struct vm_gk20a *vm, u64 addr)
{
struct nvgpu_rbtree_node *node = NULL;
struct nvgpu_rbtree_node *root = vm->mapped_buffers;
nvgpu_rbtree_search(addr, &node, root);
if (!node)
return NULL;
return mapped_buffer_from_rbtree_node(node);
}
struct nvgpu_mapped_buf *__nvgpu_vm_find_mapped_buf_range(
struct vm_gk20a *vm, u64 addr)
{
struct nvgpu_rbtree_node *node = NULL;
struct nvgpu_rbtree_node *root = vm->mapped_buffers;
nvgpu_rbtree_range_search(addr, &node, root);
if (!node)
return NULL;
return mapped_buffer_from_rbtree_node(node);
}
struct nvgpu_mapped_buf *__nvgpu_vm_find_mapped_buf_less_than(
struct vm_gk20a *vm, u64 addr)
{
struct nvgpu_rbtree_node *node = NULL;
struct nvgpu_rbtree_node *root = vm->mapped_buffers;
nvgpu_rbtree_less_than_search(addr, &node, root);
if (!node)
return NULL;
return mapped_buffer_from_rbtree_node(node);
}