mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-27 19:29:37 +00:00
![Christian König](/assets/img/avatar_default.png)
That avoids lock inversion between the BO reservation lock and the anon_vma lock. v2: * Changed amdgpu_bo_list_entry.user_pages to an array of pointers * Lock mmap_sem only for get_user_pages * Added invalidation of unbound userpointer BOs * Fixed memory leak and page reference leak v3 (chk): * Revert locking mmap_sem only for_get user_pages * Revert adding invalidation of unbound userpointer BOs * Sanitize and fix error handling v4 (chk): * Init userpages pointer everywhere. * Fix error handling when get_user_pages() fails. * Add invalidation of unbound userpointer BOs again. v5 (chk): * Add maximum number of tries. v6 (chk): * Fix error handling when we run out of tries. Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> (v4) Acked-by: Alex Deucher <alexander.deucher@amd.com>
1493 lines
38 KiB
C
1493 lines
38 KiB
C
/*
|
|
* Copyright 2008 Advanced Micro Devices, Inc.
|
|
* Copyright 2008 Red Hat Inc.
|
|
* Copyright 2009 Jerome Glisse.
|
|
*
|
|
* 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: Dave Airlie
|
|
* Alex Deucher
|
|
* Jerome Glisse
|
|
*/
|
|
#include <drm/drmP.h>
|
|
#include <drm/amdgpu_drm.h>
|
|
#include "amdgpu.h"
|
|
#include "amdgpu_trace.h"
|
|
|
|
/*
|
|
* GPUVM
|
|
* GPUVM is similar to the legacy gart on older asics, however
|
|
* rather than there being a single global gart table
|
|
* for the entire GPU, there are multiple VM page tables active
|
|
* at any given time. The VM page tables can contain a mix
|
|
* vram pages and system memory pages and system memory pages
|
|
* can be mapped as snooped (cached system pages) or unsnooped
|
|
* (uncached system pages).
|
|
* Each VM has an ID associated with it and there is a page table
|
|
* associated with each VMID. When execting a command buffer,
|
|
* the kernel tells the the ring what VMID to use for that command
|
|
* buffer. VMIDs are allocated dynamically as commands are submitted.
|
|
* The userspace drivers maintain their own address space and the kernel
|
|
* sets up their pages tables accordingly when they submit their
|
|
* command buffers and a VMID is assigned.
|
|
* Cayman/Trinity support up to 8 active VMs at any given time;
|
|
* SI supports 16.
|
|
*/
|
|
|
|
/* Special value that no flush is necessary */
|
|
#define AMDGPU_VM_NO_FLUSH (~0ll)
|
|
|
|
/**
|
|
* amdgpu_vm_num_pde - return the number of page directory entries
|
|
*
|
|
* @adev: amdgpu_device pointer
|
|
*
|
|
* Calculate the number of page directory entries.
|
|
*/
|
|
static unsigned amdgpu_vm_num_pdes(struct amdgpu_device *adev)
|
|
{
|
|
return adev->vm_manager.max_pfn >> amdgpu_vm_block_size;
|
|
}
|
|
|
|
/**
|
|
* amdgpu_vm_directory_size - returns the size of the page directory in bytes
|
|
*
|
|
* @adev: amdgpu_device pointer
|
|
*
|
|
* Calculate the size of the page directory in bytes.
|
|
*/
|
|
static unsigned amdgpu_vm_directory_size(struct amdgpu_device *adev)
|
|
{
|
|
return AMDGPU_GPU_PAGE_ALIGN(amdgpu_vm_num_pdes(adev) * 8);
|
|
}
|
|
|
|
/**
|
|
* amdgpu_vm_get_pd_bo - add the VM PD to a validation list
|
|
*
|
|
* @vm: vm providing the BOs
|
|
* @validated: head of validation list
|
|
* @entry: entry to add
|
|
*
|
|
* Add the page directory to the list of BOs to
|
|
* validate for command submission.
|
|
*/
|
|
void amdgpu_vm_get_pd_bo(struct amdgpu_vm *vm,
|
|
struct list_head *validated,
|
|
struct amdgpu_bo_list_entry *entry)
|
|
{
|
|
entry->robj = vm->page_directory;
|
|
entry->priority = 0;
|
|
entry->tv.bo = &vm->page_directory->tbo;
|
|
entry->tv.shared = true;
|
|
entry->user_pages = NULL;
|
|
list_add(&entry->tv.head, validated);
|
|
}
|
|
|
|
/**
|
|
* amdgpu_vm_get_bos - add the vm BOs to a duplicates list
|
|
*
|
|
* @vm: vm providing the BOs
|
|
* @duplicates: head of duplicates list
|
|
*
|
|
* Add the page directory to the BO duplicates list
|
|
* for command submission.
|
|
*/
|
|
void amdgpu_vm_get_pt_bos(struct amdgpu_vm *vm, struct list_head *duplicates)
|
|
{
|
|
unsigned i;
|
|
|
|
/* add the vm page table to the list */
|
|
for (i = 0; i <= vm->max_pde_used; ++i) {
|
|
struct amdgpu_bo_list_entry *entry = &vm->page_tables[i].entry;
|
|
|
|
if (!entry->robj)
|
|
continue;
|
|
|
|
list_add(&entry->tv.head, duplicates);
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* amdgpu_vm_move_pt_bos_in_lru - move the PT BOs to the LRU tail
|
|
*
|
|
* @adev: amdgpu device instance
|
|
* @vm: vm providing the BOs
|
|
*
|
|
* Move the PT BOs to the tail of the LRU.
|
|
*/
|
|
void amdgpu_vm_move_pt_bos_in_lru(struct amdgpu_device *adev,
|
|
struct amdgpu_vm *vm)
|
|
{
|
|
struct ttm_bo_global *glob = adev->mman.bdev.glob;
|
|
unsigned i;
|
|
|
|
spin_lock(&glob->lru_lock);
|
|
for (i = 0; i <= vm->max_pde_used; ++i) {
|
|
struct amdgpu_bo_list_entry *entry = &vm->page_tables[i].entry;
|
|
|
|
if (!entry->robj)
|
|
continue;
|
|
|
|
ttm_bo_move_to_lru_tail(&entry->robj->tbo);
|
|
}
|
|
spin_unlock(&glob->lru_lock);
|
|
}
|
|
|
|
/**
|
|
* amdgpu_vm_grab_id - allocate the next free VMID
|
|
*
|
|
* @vm: vm to allocate id for
|
|
* @ring: ring we want to submit job to
|
|
* @sync: sync object where we add dependencies
|
|
* @fence: fence protecting ID from reuse
|
|
*
|
|
* Allocate an id for the vm, adding fences to the sync obj as necessary.
|
|
*/
|
|
int amdgpu_vm_grab_id(struct amdgpu_vm *vm, struct amdgpu_ring *ring,
|
|
struct amdgpu_sync *sync, struct fence *fence,
|
|
unsigned *vm_id, uint64_t *vm_pd_addr)
|
|
{
|
|
uint64_t pd_addr = amdgpu_bo_gpu_offset(vm->page_directory);
|
|
struct amdgpu_device *adev = ring->adev;
|
|
struct amdgpu_vm_id *id = &vm->ids[ring->idx];
|
|
struct fence *updates = sync->last_vm_update;
|
|
int r;
|
|
|
|
mutex_lock(&adev->vm_manager.lock);
|
|
|
|
/* check if the id is still valid */
|
|
if (id->mgr_id) {
|
|
struct fence *flushed = id->flushed_updates;
|
|
bool is_later;
|
|
long owner;
|
|
|
|
if (!flushed)
|
|
is_later = true;
|
|
else if (!updates)
|
|
is_later = false;
|
|
else
|
|
is_later = fence_is_later(updates, flushed);
|
|
|
|
owner = atomic_long_read(&id->mgr_id->owner);
|
|
if (!is_later && owner == (long)id &&
|
|
pd_addr == id->pd_gpu_addr) {
|
|
|
|
r = amdgpu_sync_fence(ring->adev, sync,
|
|
id->mgr_id->active);
|
|
if (r) {
|
|
mutex_unlock(&adev->vm_manager.lock);
|
|
return r;
|
|
}
|
|
|
|
fence_put(id->mgr_id->active);
|
|
id->mgr_id->active = fence_get(fence);
|
|
|
|
list_move_tail(&id->mgr_id->list,
|
|
&adev->vm_manager.ids_lru);
|
|
|
|
*vm_id = id->mgr_id - adev->vm_manager.ids;
|
|
*vm_pd_addr = AMDGPU_VM_NO_FLUSH;
|
|
trace_amdgpu_vm_grab_id(vm, ring->idx, *vm_id,
|
|
*vm_pd_addr);
|
|
|
|
mutex_unlock(&adev->vm_manager.lock);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
id->mgr_id = list_first_entry(&adev->vm_manager.ids_lru,
|
|
struct amdgpu_vm_manager_id,
|
|
list);
|
|
|
|
r = amdgpu_sync_fence(ring->adev, sync, id->mgr_id->active);
|
|
if (!r) {
|
|
fence_put(id->mgr_id->active);
|
|
id->mgr_id->active = fence_get(fence);
|
|
|
|
fence_put(id->flushed_updates);
|
|
id->flushed_updates = fence_get(updates);
|
|
|
|
id->pd_gpu_addr = pd_addr;
|
|
|
|
list_move_tail(&id->mgr_id->list, &adev->vm_manager.ids_lru);
|
|
atomic_long_set(&id->mgr_id->owner, (long)id);
|
|
|
|
*vm_id = id->mgr_id - adev->vm_manager.ids;
|
|
*vm_pd_addr = pd_addr;
|
|
trace_amdgpu_vm_grab_id(vm, ring->idx, *vm_id, *vm_pd_addr);
|
|
}
|
|
|
|
mutex_unlock(&adev->vm_manager.lock);
|
|
return r;
|
|
}
|
|
|
|
/**
|
|
* amdgpu_vm_flush - hardware flush the vm
|
|
*
|
|
* @ring: ring to use for flush
|
|
* @vm_id: vmid number to use
|
|
* @pd_addr: address of the page directory
|
|
*
|
|
* Emit a VM flush when it is necessary.
|
|
*/
|
|
void amdgpu_vm_flush(struct amdgpu_ring *ring,
|
|
unsigned vm_id, uint64_t pd_addr,
|
|
uint32_t gds_base, uint32_t gds_size,
|
|
uint32_t gws_base, uint32_t gws_size,
|
|
uint32_t oa_base, uint32_t oa_size)
|
|
{
|
|
struct amdgpu_device *adev = ring->adev;
|
|
struct amdgpu_vm_manager_id *mgr_id = &adev->vm_manager.ids[vm_id];
|
|
bool gds_switch_needed = ring->funcs->emit_gds_switch && (
|
|
mgr_id->gds_base != gds_base ||
|
|
mgr_id->gds_size != gds_size ||
|
|
mgr_id->gws_base != gws_base ||
|
|
mgr_id->gws_size != gws_size ||
|
|
mgr_id->oa_base != oa_base ||
|
|
mgr_id->oa_size != oa_size);
|
|
|
|
if (ring->funcs->emit_pipeline_sync && (
|
|
pd_addr != AMDGPU_VM_NO_FLUSH || gds_switch_needed))
|
|
amdgpu_ring_emit_pipeline_sync(ring);
|
|
|
|
if (pd_addr != AMDGPU_VM_NO_FLUSH) {
|
|
trace_amdgpu_vm_flush(pd_addr, ring->idx, vm_id);
|
|
amdgpu_ring_emit_vm_flush(ring, vm_id, pd_addr);
|
|
}
|
|
|
|
if (gds_switch_needed) {
|
|
mgr_id->gds_base = gds_base;
|
|
mgr_id->gds_size = gds_size;
|
|
mgr_id->gws_base = gws_base;
|
|
mgr_id->gws_size = gws_size;
|
|
mgr_id->oa_base = oa_base;
|
|
mgr_id->oa_size = oa_size;
|
|
amdgpu_ring_emit_gds_switch(ring, vm_id,
|
|
gds_base, gds_size,
|
|
gws_base, gws_size,
|
|
oa_base, oa_size);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* amdgpu_vm_reset_id - reset VMID to zero
|
|
*
|
|
* @adev: amdgpu device structure
|
|
* @vm_id: vmid number to use
|
|
*
|
|
* Reset saved GDW, GWS and OA to force switch on next flush.
|
|
*/
|
|
void amdgpu_vm_reset_id(struct amdgpu_device *adev, unsigned vm_id)
|
|
{
|
|
struct amdgpu_vm_manager_id *mgr_id = &adev->vm_manager.ids[vm_id];
|
|
|
|
mgr_id->gds_base = 0;
|
|
mgr_id->gds_size = 0;
|
|
mgr_id->gws_base = 0;
|
|
mgr_id->gws_size = 0;
|
|
mgr_id->oa_base = 0;
|
|
mgr_id->oa_size = 0;
|
|
}
|
|
|
|
/**
|
|
* amdgpu_vm_bo_find - find the bo_va for a specific vm & bo
|
|
*
|
|
* @vm: requested vm
|
|
* @bo: requested buffer object
|
|
*
|
|
* Find @bo inside the requested vm.
|
|
* Search inside the @bos vm list for the requested vm
|
|
* Returns the found bo_va or NULL if none is found
|
|
*
|
|
* Object has to be reserved!
|
|
*/
|
|
struct amdgpu_bo_va *amdgpu_vm_bo_find(struct amdgpu_vm *vm,
|
|
struct amdgpu_bo *bo)
|
|
{
|
|
struct amdgpu_bo_va *bo_va;
|
|
|
|
list_for_each_entry(bo_va, &bo->va, bo_list) {
|
|
if (bo_va->vm == vm) {
|
|
return bo_va;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* amdgpu_vm_update_pages - helper to call the right asic function
|
|
*
|
|
* @adev: amdgpu_device pointer
|
|
* @gtt: GART instance to use for mapping
|
|
* @gtt_flags: GTT hw access flags
|
|
* @ib: indirect buffer to fill with commands
|
|
* @pe: addr of the page entry
|
|
* @addr: dst addr to write into pe
|
|
* @count: number of page entries to update
|
|
* @incr: increase next addr by incr bytes
|
|
* @flags: hw access flags
|
|
*
|
|
* Traces the parameters and calls the right asic functions
|
|
* to setup the page table using the DMA.
|
|
*/
|
|
static void amdgpu_vm_update_pages(struct amdgpu_device *adev,
|
|
struct amdgpu_gart *gtt,
|
|
uint32_t gtt_flags,
|
|
struct amdgpu_ib *ib,
|
|
uint64_t pe, uint64_t addr,
|
|
unsigned count, uint32_t incr,
|
|
uint32_t flags)
|
|
{
|
|
trace_amdgpu_vm_set_page(pe, addr, count, incr, flags);
|
|
|
|
if ((gtt == &adev->gart) && (flags == gtt_flags)) {
|
|
uint64_t src = gtt->table_addr + (addr >> 12) * 8;
|
|
amdgpu_vm_copy_pte(adev, ib, pe, src, count);
|
|
|
|
} else if (gtt) {
|
|
dma_addr_t *pages_addr = gtt->pages_addr;
|
|
amdgpu_vm_write_pte(adev, ib, pages_addr, pe, addr,
|
|
count, incr, flags);
|
|
|
|
} else if (count < 3) {
|
|
amdgpu_vm_write_pte(adev, ib, NULL, pe, addr,
|
|
count, incr, flags);
|
|
|
|
} else {
|
|
amdgpu_vm_set_pte_pde(adev, ib, pe, addr,
|
|
count, incr, flags);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* amdgpu_vm_clear_bo - initially clear the page dir/table
|
|
*
|
|
* @adev: amdgpu_device pointer
|
|
* @bo: bo to clear
|
|
*
|
|
* need to reserve bo first before calling it.
|
|
*/
|
|
static int amdgpu_vm_clear_bo(struct amdgpu_device *adev,
|
|
struct amdgpu_vm *vm,
|
|
struct amdgpu_bo *bo)
|
|
{
|
|
struct amdgpu_ring *ring;
|
|
struct fence *fence = NULL;
|
|
struct amdgpu_job *job;
|
|
unsigned entries;
|
|
uint64_t addr;
|
|
int r;
|
|
|
|
ring = container_of(vm->entity.sched, struct amdgpu_ring, sched);
|
|
|
|
r = reservation_object_reserve_shared(bo->tbo.resv);
|
|
if (r)
|
|
return r;
|
|
|
|
r = ttm_bo_validate(&bo->tbo, &bo->placement, true, false);
|
|
if (r)
|
|
goto error;
|
|
|
|
addr = amdgpu_bo_gpu_offset(bo);
|
|
entries = amdgpu_bo_size(bo) / 8;
|
|
|
|
r = amdgpu_job_alloc_with_ib(adev, 64, &job);
|
|
if (r)
|
|
goto error;
|
|
|
|
amdgpu_vm_update_pages(adev, NULL, 0, &job->ibs[0], addr, 0, entries,
|
|
0, 0);
|
|
amdgpu_ring_pad_ib(ring, &job->ibs[0]);
|
|
|
|
WARN_ON(job->ibs[0].length_dw > 64);
|
|
r = amdgpu_job_submit(job, ring, &vm->entity,
|
|
AMDGPU_FENCE_OWNER_VM, &fence);
|
|
if (r)
|
|
goto error_free;
|
|
|
|
amdgpu_bo_fence(bo, fence, true);
|
|
fence_put(fence);
|
|
return 0;
|
|
|
|
error_free:
|
|
amdgpu_job_free(job);
|
|
|
|
error:
|
|
return r;
|
|
}
|
|
|
|
/**
|
|
* amdgpu_vm_map_gart - Resolve gart mapping of addr
|
|
*
|
|
* @pages_addr: optional DMA address to use for lookup
|
|
* @addr: the unmapped addr
|
|
*
|
|
* Look up the physical address of the page that the pte resolves
|
|
* to and return the pointer for the page table entry.
|
|
*/
|
|
uint64_t amdgpu_vm_map_gart(const dma_addr_t *pages_addr, uint64_t addr)
|
|
{
|
|
uint64_t result;
|
|
|
|
if (pages_addr) {
|
|
/* page table offset */
|
|
result = pages_addr[addr >> PAGE_SHIFT];
|
|
|
|
/* in case cpu page size != gpu page size*/
|
|
result |= addr & (~PAGE_MASK);
|
|
|
|
} else {
|
|
/* No mapping required */
|
|
result = addr;
|
|
}
|
|
|
|
result &= 0xFFFFFFFFFFFFF000ULL;
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* amdgpu_vm_update_pdes - make sure that page directory is valid
|
|
*
|
|
* @adev: amdgpu_device pointer
|
|
* @vm: requested vm
|
|
* @start: start of GPU address range
|
|
* @end: end of GPU address range
|
|
*
|
|
* Allocates new page tables if necessary
|
|
* and updates the page directory.
|
|
* Returns 0 for success, error for failure.
|
|
*/
|
|
int amdgpu_vm_update_page_directory(struct amdgpu_device *adev,
|
|
struct amdgpu_vm *vm)
|
|
{
|
|
struct amdgpu_ring *ring;
|
|
struct amdgpu_bo *pd = vm->page_directory;
|
|
uint64_t pd_addr = amdgpu_bo_gpu_offset(pd);
|
|
uint32_t incr = AMDGPU_VM_PTE_COUNT * 8;
|
|
uint64_t last_pde = ~0, last_pt = ~0;
|
|
unsigned count = 0, pt_idx, ndw;
|
|
struct amdgpu_job *job;
|
|
struct amdgpu_ib *ib;
|
|
struct fence *fence = NULL;
|
|
|
|
int r;
|
|
|
|
ring = container_of(vm->entity.sched, struct amdgpu_ring, sched);
|
|
|
|
/* padding, etc. */
|
|
ndw = 64;
|
|
|
|
/* assume the worst case */
|
|
ndw += vm->max_pde_used * 6;
|
|
|
|
r = amdgpu_job_alloc_with_ib(adev, ndw * 4, &job);
|
|
if (r)
|
|
return r;
|
|
|
|
ib = &job->ibs[0];
|
|
|
|
/* walk over the address space and update the page directory */
|
|
for (pt_idx = 0; pt_idx <= vm->max_pde_used; ++pt_idx) {
|
|
struct amdgpu_bo *bo = vm->page_tables[pt_idx].entry.robj;
|
|
uint64_t pde, pt;
|
|
|
|
if (bo == NULL)
|
|
continue;
|
|
|
|
pt = amdgpu_bo_gpu_offset(bo);
|
|
if (vm->page_tables[pt_idx].addr == pt)
|
|
continue;
|
|
vm->page_tables[pt_idx].addr = pt;
|
|
|
|
pde = pd_addr + pt_idx * 8;
|
|
if (((last_pde + 8 * count) != pde) ||
|
|
((last_pt + incr * count) != pt)) {
|
|
|
|
if (count) {
|
|
amdgpu_vm_update_pages(adev, NULL, 0, ib,
|
|
last_pde, last_pt,
|
|
count, incr,
|
|
AMDGPU_PTE_VALID);
|
|
}
|
|
|
|
count = 1;
|
|
last_pde = pde;
|
|
last_pt = pt;
|
|
} else {
|
|
++count;
|
|
}
|
|
}
|
|
|
|
if (count)
|
|
amdgpu_vm_update_pages(adev, NULL, 0, ib, last_pde, last_pt,
|
|
count, incr, AMDGPU_PTE_VALID);
|
|
|
|
if (ib->length_dw != 0) {
|
|
amdgpu_ring_pad_ib(ring, ib);
|
|
amdgpu_sync_resv(adev, &job->sync, pd->tbo.resv,
|
|
AMDGPU_FENCE_OWNER_VM);
|
|
WARN_ON(ib->length_dw > ndw);
|
|
r = amdgpu_job_submit(job, ring, &vm->entity,
|
|
AMDGPU_FENCE_OWNER_VM, &fence);
|
|
if (r)
|
|
goto error_free;
|
|
|
|
amdgpu_bo_fence(pd, fence, true);
|
|
fence_put(vm->page_directory_fence);
|
|
vm->page_directory_fence = fence_get(fence);
|
|
fence_put(fence);
|
|
|
|
} else {
|
|
amdgpu_job_free(job);
|
|
}
|
|
|
|
return 0;
|
|
|
|
error_free:
|
|
amdgpu_job_free(job);
|
|
return r;
|
|
}
|
|
|
|
/**
|
|
* amdgpu_vm_frag_ptes - add fragment information to PTEs
|
|
*
|
|
* @adev: amdgpu_device pointer
|
|
* @gtt: GART instance to use for mapping
|
|
* @gtt_flags: GTT hw mapping flags
|
|
* @ib: IB for the update
|
|
* @pe_start: first PTE to handle
|
|
* @pe_end: last PTE to handle
|
|
* @addr: addr those PTEs should point to
|
|
* @flags: hw mapping flags
|
|
*/
|
|
static void amdgpu_vm_frag_ptes(struct amdgpu_device *adev,
|
|
struct amdgpu_gart *gtt,
|
|
uint32_t gtt_flags,
|
|
struct amdgpu_ib *ib,
|
|
uint64_t pe_start, uint64_t pe_end,
|
|
uint64_t addr, uint32_t flags)
|
|
{
|
|
/**
|
|
* The MC L1 TLB supports variable sized pages, based on a fragment
|
|
* field in the PTE. When this field is set to a non-zero value, page
|
|
* granularity is increased from 4KB to (1 << (12 + frag)). The PTE
|
|
* flags are considered valid for all PTEs within the fragment range
|
|
* and corresponding mappings are assumed to be physically contiguous.
|
|
*
|
|
* The L1 TLB can store a single PTE for the whole fragment,
|
|
* significantly increasing the space available for translation
|
|
* caching. This leads to large improvements in throughput when the
|
|
* TLB is under pressure.
|
|
*
|
|
* The L2 TLB distributes small and large fragments into two
|
|
* asymmetric partitions. The large fragment cache is significantly
|
|
* larger. Thus, we try to use large fragments wherever possible.
|
|
* Userspace can support this by aligning virtual base address and
|
|
* allocation size to the fragment size.
|
|
*/
|
|
|
|
/* SI and newer are optimized for 64KB */
|
|
uint64_t frag_flags = AMDGPU_PTE_FRAG_64KB;
|
|
uint64_t frag_align = 0x80;
|
|
|
|
uint64_t frag_start = ALIGN(pe_start, frag_align);
|
|
uint64_t frag_end = pe_end & ~(frag_align - 1);
|
|
|
|
unsigned count;
|
|
|
|
/* Abort early if there isn't anything to do */
|
|
if (pe_start == pe_end)
|
|
return;
|
|
|
|
/* system pages are non continuously */
|
|
if (gtt || !(flags & AMDGPU_PTE_VALID) || (frag_start >= frag_end)) {
|
|
|
|
count = (pe_end - pe_start) / 8;
|
|
amdgpu_vm_update_pages(adev, gtt, gtt_flags, ib, pe_start,
|
|
addr, count, AMDGPU_GPU_PAGE_SIZE,
|
|
flags);
|
|
return;
|
|
}
|
|
|
|
/* handle the 4K area at the beginning */
|
|
if (pe_start != frag_start) {
|
|
count = (frag_start - pe_start) / 8;
|
|
amdgpu_vm_update_pages(adev, NULL, 0, ib, pe_start, addr,
|
|
count, AMDGPU_GPU_PAGE_SIZE, flags);
|
|
addr += AMDGPU_GPU_PAGE_SIZE * count;
|
|
}
|
|
|
|
/* handle the area in the middle */
|
|
count = (frag_end - frag_start) / 8;
|
|
amdgpu_vm_update_pages(adev, NULL, 0, ib, frag_start, addr, count,
|
|
AMDGPU_GPU_PAGE_SIZE, flags | frag_flags);
|
|
|
|
/* handle the 4K area at the end */
|
|
if (frag_end != pe_end) {
|
|
addr += AMDGPU_GPU_PAGE_SIZE * count;
|
|
count = (pe_end - frag_end) / 8;
|
|
amdgpu_vm_update_pages(adev, NULL, 0, ib, frag_end, addr,
|
|
count, AMDGPU_GPU_PAGE_SIZE, flags);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* amdgpu_vm_update_ptes - make sure that page tables are valid
|
|
*
|
|
* @adev: amdgpu_device pointer
|
|
* @gtt: GART instance to use for mapping
|
|
* @gtt_flags: GTT hw mapping flags
|
|
* @vm: requested vm
|
|
* @start: start of GPU address range
|
|
* @end: end of GPU address range
|
|
* @dst: destination address to map to
|
|
* @flags: mapping flags
|
|
*
|
|
* Update the page tables in the range @start - @end.
|
|
*/
|
|
static void amdgpu_vm_update_ptes(struct amdgpu_device *adev,
|
|
struct amdgpu_gart *gtt,
|
|
uint32_t gtt_flags,
|
|
struct amdgpu_vm *vm,
|
|
struct amdgpu_ib *ib,
|
|
uint64_t start, uint64_t end,
|
|
uint64_t dst, uint32_t flags)
|
|
{
|
|
const uint64_t mask = AMDGPU_VM_PTE_COUNT - 1;
|
|
|
|
uint64_t last_pe_start = ~0, last_pe_end = ~0, last_dst = ~0;
|
|
uint64_t addr;
|
|
|
|
/* walk over the address space and update the page tables */
|
|
for (addr = start; addr < end; ) {
|
|
uint64_t pt_idx = addr >> amdgpu_vm_block_size;
|
|
struct amdgpu_bo *pt = vm->page_tables[pt_idx].entry.robj;
|
|
unsigned nptes;
|
|
uint64_t pe_start;
|
|
|
|
if ((addr & ~mask) == (end & ~mask))
|
|
nptes = end - addr;
|
|
else
|
|
nptes = AMDGPU_VM_PTE_COUNT - (addr & mask);
|
|
|
|
pe_start = amdgpu_bo_gpu_offset(pt);
|
|
pe_start += (addr & mask) * 8;
|
|
|
|
if (last_pe_end != pe_start) {
|
|
|
|
amdgpu_vm_frag_ptes(adev, gtt, gtt_flags, ib,
|
|
last_pe_start, last_pe_end,
|
|
last_dst, flags);
|
|
|
|
last_pe_start = pe_start;
|
|
last_pe_end = pe_start + 8 * nptes;
|
|
last_dst = dst;
|
|
} else {
|
|
last_pe_end += 8 * nptes;
|
|
}
|
|
|
|
addr += nptes;
|
|
dst += nptes * AMDGPU_GPU_PAGE_SIZE;
|
|
}
|
|
|
|
amdgpu_vm_frag_ptes(adev, gtt, gtt_flags, ib,
|
|
last_pe_start, last_pe_end,
|
|
last_dst, flags);
|
|
}
|
|
|
|
/**
|
|
* amdgpu_vm_bo_update_mapping - update a mapping in the vm page table
|
|
*
|
|
* @adev: amdgpu_device pointer
|
|
* @gtt: GART instance to use for mapping
|
|
* @gtt_flags: flags as they are used for GTT
|
|
* @vm: requested vm
|
|
* @start: start of mapped range
|
|
* @last: last mapped entry
|
|
* @flags: flags for the entries
|
|
* @addr: addr to set the area to
|
|
* @fence: optional resulting fence
|
|
*
|
|
* Fill in the page table entries between @start and @last.
|
|
* Returns 0 for success, -EINVAL for failure.
|
|
*/
|
|
static int amdgpu_vm_bo_update_mapping(struct amdgpu_device *adev,
|
|
struct amdgpu_gart *gtt,
|
|
uint32_t gtt_flags,
|
|
struct amdgpu_vm *vm,
|
|
uint64_t start, uint64_t last,
|
|
uint32_t flags, uint64_t addr,
|
|
struct fence **fence)
|
|
{
|
|
struct amdgpu_ring *ring;
|
|
void *owner = AMDGPU_FENCE_OWNER_VM;
|
|
unsigned nptes, ncmds, ndw;
|
|
struct amdgpu_job *job;
|
|
struct amdgpu_ib *ib;
|
|
struct fence *f = NULL;
|
|
int r;
|
|
|
|
ring = container_of(vm->entity.sched, struct amdgpu_ring, sched);
|
|
|
|
/* sync to everything on unmapping */
|
|
if (!(flags & AMDGPU_PTE_VALID))
|
|
owner = AMDGPU_FENCE_OWNER_UNDEFINED;
|
|
|
|
nptes = last - start + 1;
|
|
|
|
/*
|
|
* reserve space for one command every (1 << BLOCK_SIZE)
|
|
* entries or 2k dwords (whatever is smaller)
|
|
*/
|
|
ncmds = (nptes >> min(amdgpu_vm_block_size, 11)) + 1;
|
|
|
|
/* padding, etc. */
|
|
ndw = 64;
|
|
|
|
if ((gtt == &adev->gart) && (flags == gtt_flags)) {
|
|
/* only copy commands needed */
|
|
ndw += ncmds * 7;
|
|
|
|
} else if (gtt) {
|
|
/* header for write data commands */
|
|
ndw += ncmds * 4;
|
|
|
|
/* body of write data command */
|
|
ndw += nptes * 2;
|
|
|
|
} else {
|
|
/* set page commands needed */
|
|
ndw += ncmds * 10;
|
|
|
|
/* two extra commands for begin/end of fragment */
|
|
ndw += 2 * 10;
|
|
}
|
|
|
|
r = amdgpu_job_alloc_with_ib(adev, ndw * 4, &job);
|
|
if (r)
|
|
return r;
|
|
|
|
ib = &job->ibs[0];
|
|
|
|
r = amdgpu_sync_resv(adev, &job->sync, vm->page_directory->tbo.resv,
|
|
owner);
|
|
if (r)
|
|
goto error_free;
|
|
|
|
r = reservation_object_reserve_shared(vm->page_directory->tbo.resv);
|
|
if (r)
|
|
goto error_free;
|
|
|
|
amdgpu_vm_update_ptes(adev, gtt, gtt_flags, vm, ib, start, last + 1,
|
|
addr, flags);
|
|
|
|
amdgpu_ring_pad_ib(ring, ib);
|
|
WARN_ON(ib->length_dw > ndw);
|
|
r = amdgpu_job_submit(job, ring, &vm->entity,
|
|
AMDGPU_FENCE_OWNER_VM, &f);
|
|
if (r)
|
|
goto error_free;
|
|
|
|
amdgpu_bo_fence(vm->page_directory, f, true);
|
|
if (fence) {
|
|
fence_put(*fence);
|
|
*fence = fence_get(f);
|
|
}
|
|
fence_put(f);
|
|
return 0;
|
|
|
|
error_free:
|
|
amdgpu_job_free(job);
|
|
return r;
|
|
}
|
|
|
|
/**
|
|
* amdgpu_vm_bo_split_mapping - split a mapping into smaller chunks
|
|
*
|
|
* @adev: amdgpu_device pointer
|
|
* @gtt: GART instance to use for mapping
|
|
* @vm: requested vm
|
|
* @mapping: mapped range and flags to use for the update
|
|
* @addr: addr to set the area to
|
|
* @gtt_flags: flags as they are used for GTT
|
|
* @fence: optional resulting fence
|
|
*
|
|
* Split the mapping into smaller chunks so that each update fits
|
|
* into a SDMA IB.
|
|
* Returns 0 for success, -EINVAL for failure.
|
|
*/
|
|
static int amdgpu_vm_bo_split_mapping(struct amdgpu_device *adev,
|
|
struct amdgpu_gart *gtt,
|
|
uint32_t gtt_flags,
|
|
struct amdgpu_vm *vm,
|
|
struct amdgpu_bo_va_mapping *mapping,
|
|
uint64_t addr, struct fence **fence)
|
|
{
|
|
const uint64_t max_size = 64ULL * 1024ULL * 1024ULL / AMDGPU_GPU_PAGE_SIZE;
|
|
|
|
uint64_t start = mapping->it.start;
|
|
uint32_t flags = gtt_flags;
|
|
int r;
|
|
|
|
/* normally,bo_va->flags only contians READABLE and WIRTEABLE bit go here
|
|
* but in case of something, we filter the flags in first place
|
|
*/
|
|
if (!(mapping->flags & AMDGPU_PTE_READABLE))
|
|
flags &= ~AMDGPU_PTE_READABLE;
|
|
if (!(mapping->flags & AMDGPU_PTE_WRITEABLE))
|
|
flags &= ~AMDGPU_PTE_WRITEABLE;
|
|
|
|
trace_amdgpu_vm_bo_update(mapping);
|
|
|
|
addr += mapping->offset;
|
|
|
|
if (!gtt || ((gtt == &adev->gart) && (flags == gtt_flags)))
|
|
return amdgpu_vm_bo_update_mapping(adev, gtt, gtt_flags, vm,
|
|
start, mapping->it.last,
|
|
flags, addr, fence);
|
|
|
|
while (start != mapping->it.last + 1) {
|
|
uint64_t last;
|
|
|
|
last = min((uint64_t)mapping->it.last, start + max_size);
|
|
r = amdgpu_vm_bo_update_mapping(adev, gtt, gtt_flags, vm,
|
|
start, last, flags, addr,
|
|
fence);
|
|
if (r)
|
|
return r;
|
|
|
|
start = last + 1;
|
|
addr += max_size;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* amdgpu_vm_bo_update - update all BO mappings in the vm page table
|
|
*
|
|
* @adev: amdgpu_device pointer
|
|
* @bo_va: requested BO and VM object
|
|
* @mem: ttm mem
|
|
*
|
|
* Fill in the page table entries for @bo_va.
|
|
* Returns 0 for success, -EINVAL for failure.
|
|
*
|
|
* Object have to be reserved and mutex must be locked!
|
|
*/
|
|
int amdgpu_vm_bo_update(struct amdgpu_device *adev,
|
|
struct amdgpu_bo_va *bo_va,
|
|
struct ttm_mem_reg *mem)
|
|
{
|
|
struct amdgpu_vm *vm = bo_va->vm;
|
|
struct amdgpu_bo_va_mapping *mapping;
|
|
struct amdgpu_gart *gtt = NULL;
|
|
uint32_t flags;
|
|
uint64_t addr;
|
|
int r;
|
|
|
|
if (mem) {
|
|
addr = (u64)mem->start << PAGE_SHIFT;
|
|
switch (mem->mem_type) {
|
|
case TTM_PL_TT:
|
|
gtt = &bo_va->bo->adev->gart;
|
|
break;
|
|
|
|
case TTM_PL_VRAM:
|
|
addr += adev->vm_manager.vram_base_offset;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
} else {
|
|
addr = 0;
|
|
}
|
|
|
|
flags = amdgpu_ttm_tt_pte_flags(adev, bo_va->bo->tbo.ttm, mem);
|
|
|
|
spin_lock(&vm->status_lock);
|
|
if (!list_empty(&bo_va->vm_status))
|
|
list_splice_init(&bo_va->valids, &bo_va->invalids);
|
|
spin_unlock(&vm->status_lock);
|
|
|
|
list_for_each_entry(mapping, &bo_va->invalids, list) {
|
|
r = amdgpu_vm_bo_split_mapping(adev, gtt, flags, vm, mapping, addr,
|
|
&bo_va->last_pt_update);
|
|
if (r)
|
|
return r;
|
|
}
|
|
|
|
if (trace_amdgpu_vm_bo_mapping_enabled()) {
|
|
list_for_each_entry(mapping, &bo_va->valids, list)
|
|
trace_amdgpu_vm_bo_mapping(mapping);
|
|
|
|
list_for_each_entry(mapping, &bo_va->invalids, list)
|
|
trace_amdgpu_vm_bo_mapping(mapping);
|
|
}
|
|
|
|
spin_lock(&vm->status_lock);
|
|
list_splice_init(&bo_va->invalids, &bo_va->valids);
|
|
list_del_init(&bo_va->vm_status);
|
|
if (!mem)
|
|
list_add(&bo_va->vm_status, &vm->cleared);
|
|
spin_unlock(&vm->status_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* amdgpu_vm_clear_freed - clear freed BOs in the PT
|
|
*
|
|
* @adev: amdgpu_device pointer
|
|
* @vm: requested vm
|
|
*
|
|
* Make sure all freed BOs are cleared in the PT.
|
|
* Returns 0 for success.
|
|
*
|
|
* PTs have to be reserved and mutex must be locked!
|
|
*/
|
|
int amdgpu_vm_clear_freed(struct amdgpu_device *adev,
|
|
struct amdgpu_vm *vm)
|
|
{
|
|
struct amdgpu_bo_va_mapping *mapping;
|
|
int r;
|
|
|
|
spin_lock(&vm->freed_lock);
|
|
while (!list_empty(&vm->freed)) {
|
|
mapping = list_first_entry(&vm->freed,
|
|
struct amdgpu_bo_va_mapping, list);
|
|
list_del(&mapping->list);
|
|
spin_unlock(&vm->freed_lock);
|
|
r = amdgpu_vm_bo_split_mapping(adev, NULL, 0, vm, mapping,
|
|
0, NULL);
|
|
kfree(mapping);
|
|
if (r)
|
|
return r;
|
|
|
|
spin_lock(&vm->freed_lock);
|
|
}
|
|
spin_unlock(&vm->freed_lock);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
/**
|
|
* amdgpu_vm_clear_invalids - clear invalidated BOs in the PT
|
|
*
|
|
* @adev: amdgpu_device pointer
|
|
* @vm: requested vm
|
|
*
|
|
* Make sure all invalidated BOs are cleared in the PT.
|
|
* Returns 0 for success.
|
|
*
|
|
* PTs have to be reserved and mutex must be locked!
|
|
*/
|
|
int amdgpu_vm_clear_invalids(struct amdgpu_device *adev,
|
|
struct amdgpu_vm *vm, struct amdgpu_sync *sync)
|
|
{
|
|
struct amdgpu_bo_va *bo_va = NULL;
|
|
int r = 0;
|
|
|
|
spin_lock(&vm->status_lock);
|
|
while (!list_empty(&vm->invalidated)) {
|
|
bo_va = list_first_entry(&vm->invalidated,
|
|
struct amdgpu_bo_va, vm_status);
|
|
spin_unlock(&vm->status_lock);
|
|
mutex_lock(&bo_va->mutex);
|
|
r = amdgpu_vm_bo_update(adev, bo_va, NULL);
|
|
mutex_unlock(&bo_va->mutex);
|
|
if (r)
|
|
return r;
|
|
|
|
spin_lock(&vm->status_lock);
|
|
}
|
|
spin_unlock(&vm->status_lock);
|
|
|
|
if (bo_va)
|
|
r = amdgpu_sync_fence(adev, sync, bo_va->last_pt_update);
|
|
|
|
return r;
|
|
}
|
|
|
|
/**
|
|
* amdgpu_vm_bo_add - add a bo to a specific vm
|
|
*
|
|
* @adev: amdgpu_device pointer
|
|
* @vm: requested vm
|
|
* @bo: amdgpu buffer object
|
|
*
|
|
* Add @bo into the requested vm.
|
|
* Add @bo to the list of bos associated with the vm
|
|
* Returns newly added bo_va or NULL for failure
|
|
*
|
|
* Object has to be reserved!
|
|
*/
|
|
struct amdgpu_bo_va *amdgpu_vm_bo_add(struct amdgpu_device *adev,
|
|
struct amdgpu_vm *vm,
|
|
struct amdgpu_bo *bo)
|
|
{
|
|
struct amdgpu_bo_va *bo_va;
|
|
|
|
bo_va = kzalloc(sizeof(struct amdgpu_bo_va), GFP_KERNEL);
|
|
if (bo_va == NULL) {
|
|
return NULL;
|
|
}
|
|
bo_va->vm = vm;
|
|
bo_va->bo = bo;
|
|
bo_va->ref_count = 1;
|
|
INIT_LIST_HEAD(&bo_va->bo_list);
|
|
INIT_LIST_HEAD(&bo_va->valids);
|
|
INIT_LIST_HEAD(&bo_va->invalids);
|
|
INIT_LIST_HEAD(&bo_va->vm_status);
|
|
mutex_init(&bo_va->mutex);
|
|
list_add_tail(&bo_va->bo_list, &bo->va);
|
|
|
|
return bo_va;
|
|
}
|
|
|
|
/**
|
|
* amdgpu_vm_bo_map - map bo inside a vm
|
|
*
|
|
* @adev: amdgpu_device pointer
|
|
* @bo_va: bo_va to store the address
|
|
* @saddr: where to map the BO
|
|
* @offset: requested offset in the BO
|
|
* @flags: attributes of pages (read/write/valid/etc.)
|
|
*
|
|
* Add a mapping of the BO at the specefied addr into the VM.
|
|
* Returns 0 for success, error for failure.
|
|
*
|
|
* Object has to be reserved and unreserved outside!
|
|
*/
|
|
int amdgpu_vm_bo_map(struct amdgpu_device *adev,
|
|
struct amdgpu_bo_va *bo_va,
|
|
uint64_t saddr, uint64_t offset,
|
|
uint64_t size, uint32_t flags)
|
|
{
|
|
struct amdgpu_bo_va_mapping *mapping;
|
|
struct amdgpu_vm *vm = bo_va->vm;
|
|
struct interval_tree_node *it;
|
|
unsigned last_pfn, pt_idx;
|
|
uint64_t eaddr;
|
|
int r;
|
|
|
|
/* validate the parameters */
|
|
if (saddr & AMDGPU_GPU_PAGE_MASK || offset & AMDGPU_GPU_PAGE_MASK ||
|
|
size == 0 || size & AMDGPU_GPU_PAGE_MASK)
|
|
return -EINVAL;
|
|
|
|
/* make sure object fit at this offset */
|
|
eaddr = saddr + size - 1;
|
|
if ((saddr >= eaddr) || (offset + size > amdgpu_bo_size(bo_va->bo)))
|
|
return -EINVAL;
|
|
|
|
last_pfn = eaddr / AMDGPU_GPU_PAGE_SIZE;
|
|
if (last_pfn >= adev->vm_manager.max_pfn) {
|
|
dev_err(adev->dev, "va above limit (0x%08X >= 0x%08X)\n",
|
|
last_pfn, adev->vm_manager.max_pfn);
|
|
return -EINVAL;
|
|
}
|
|
|
|
saddr /= AMDGPU_GPU_PAGE_SIZE;
|
|
eaddr /= AMDGPU_GPU_PAGE_SIZE;
|
|
|
|
spin_lock(&vm->it_lock);
|
|
it = interval_tree_iter_first(&vm->va, saddr, eaddr);
|
|
spin_unlock(&vm->it_lock);
|
|
if (it) {
|
|
struct amdgpu_bo_va_mapping *tmp;
|
|
tmp = container_of(it, struct amdgpu_bo_va_mapping, it);
|
|
/* bo and tmp overlap, invalid addr */
|
|
dev_err(adev->dev, "bo %p va 0x%010Lx-0x%010Lx conflict with "
|
|
"0x%010lx-0x%010lx\n", bo_va->bo, saddr, eaddr,
|
|
tmp->it.start, tmp->it.last + 1);
|
|
r = -EINVAL;
|
|
goto error;
|
|
}
|
|
|
|
mapping = kmalloc(sizeof(*mapping), GFP_KERNEL);
|
|
if (!mapping) {
|
|
r = -ENOMEM;
|
|
goto error;
|
|
}
|
|
|
|
INIT_LIST_HEAD(&mapping->list);
|
|
mapping->it.start = saddr;
|
|
mapping->it.last = eaddr;
|
|
mapping->offset = offset;
|
|
mapping->flags = flags;
|
|
|
|
mutex_lock(&bo_va->mutex);
|
|
list_add(&mapping->list, &bo_va->invalids);
|
|
mutex_unlock(&bo_va->mutex);
|
|
spin_lock(&vm->it_lock);
|
|
interval_tree_insert(&mapping->it, &vm->va);
|
|
spin_unlock(&vm->it_lock);
|
|
trace_amdgpu_vm_bo_map(bo_va, mapping);
|
|
|
|
/* Make sure the page tables are allocated */
|
|
saddr >>= amdgpu_vm_block_size;
|
|
eaddr >>= amdgpu_vm_block_size;
|
|
|
|
BUG_ON(eaddr >= amdgpu_vm_num_pdes(adev));
|
|
|
|
if (eaddr > vm->max_pde_used)
|
|
vm->max_pde_used = eaddr;
|
|
|
|
/* walk over the address space and allocate the page tables */
|
|
for (pt_idx = saddr; pt_idx <= eaddr; ++pt_idx) {
|
|
struct reservation_object *resv = vm->page_directory->tbo.resv;
|
|
struct amdgpu_bo_list_entry *entry;
|
|
struct amdgpu_bo *pt;
|
|
|
|
entry = &vm->page_tables[pt_idx].entry;
|
|
if (entry->robj)
|
|
continue;
|
|
|
|
r = amdgpu_bo_create(adev, AMDGPU_VM_PTE_COUNT * 8,
|
|
AMDGPU_GPU_PAGE_SIZE, true,
|
|
AMDGPU_GEM_DOMAIN_VRAM,
|
|
AMDGPU_GEM_CREATE_NO_CPU_ACCESS,
|
|
NULL, resv, &pt);
|
|
if (r)
|
|
goto error_free;
|
|
|
|
/* Keep a reference to the page table to avoid freeing
|
|
* them up in the wrong order.
|
|
*/
|
|
pt->parent = amdgpu_bo_ref(vm->page_directory);
|
|
|
|
r = amdgpu_vm_clear_bo(adev, vm, pt);
|
|
if (r) {
|
|
amdgpu_bo_unref(&pt);
|
|
goto error_free;
|
|
}
|
|
|
|
entry->robj = pt;
|
|
entry->priority = 0;
|
|
entry->tv.bo = &entry->robj->tbo;
|
|
entry->tv.shared = true;
|
|
entry->user_pages = NULL;
|
|
vm->page_tables[pt_idx].addr = 0;
|
|
}
|
|
|
|
return 0;
|
|
|
|
error_free:
|
|
list_del(&mapping->list);
|
|
spin_lock(&vm->it_lock);
|
|
interval_tree_remove(&mapping->it, &vm->va);
|
|
spin_unlock(&vm->it_lock);
|
|
trace_amdgpu_vm_bo_unmap(bo_va, mapping);
|
|
kfree(mapping);
|
|
|
|
error:
|
|
return r;
|
|
}
|
|
|
|
/**
|
|
* amdgpu_vm_bo_unmap - remove bo mapping from vm
|
|
*
|
|
* @adev: amdgpu_device pointer
|
|
* @bo_va: bo_va to remove the address from
|
|
* @saddr: where to the BO is mapped
|
|
*
|
|
* Remove a mapping of the BO at the specefied addr from the VM.
|
|
* Returns 0 for success, error for failure.
|
|
*
|
|
* Object has to be reserved and unreserved outside!
|
|
*/
|
|
int amdgpu_vm_bo_unmap(struct amdgpu_device *adev,
|
|
struct amdgpu_bo_va *bo_va,
|
|
uint64_t saddr)
|
|
{
|
|
struct amdgpu_bo_va_mapping *mapping;
|
|
struct amdgpu_vm *vm = bo_va->vm;
|
|
bool valid = true;
|
|
|
|
saddr /= AMDGPU_GPU_PAGE_SIZE;
|
|
mutex_lock(&bo_va->mutex);
|
|
list_for_each_entry(mapping, &bo_va->valids, list) {
|
|
if (mapping->it.start == saddr)
|
|
break;
|
|
}
|
|
|
|
if (&mapping->list == &bo_va->valids) {
|
|
valid = false;
|
|
|
|
list_for_each_entry(mapping, &bo_va->invalids, list) {
|
|
if (mapping->it.start == saddr)
|
|
break;
|
|
}
|
|
|
|
if (&mapping->list == &bo_va->invalids) {
|
|
mutex_unlock(&bo_va->mutex);
|
|
return -ENOENT;
|
|
}
|
|
}
|
|
mutex_unlock(&bo_va->mutex);
|
|
list_del(&mapping->list);
|
|
spin_lock(&vm->it_lock);
|
|
interval_tree_remove(&mapping->it, &vm->va);
|
|
spin_unlock(&vm->it_lock);
|
|
trace_amdgpu_vm_bo_unmap(bo_va, mapping);
|
|
|
|
if (valid) {
|
|
spin_lock(&vm->freed_lock);
|
|
list_add(&mapping->list, &vm->freed);
|
|
spin_unlock(&vm->freed_lock);
|
|
} else {
|
|
kfree(mapping);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* amdgpu_vm_bo_rmv - remove a bo to a specific vm
|
|
*
|
|
* @adev: amdgpu_device pointer
|
|
* @bo_va: requested bo_va
|
|
*
|
|
* Remove @bo_va->bo from the requested vm.
|
|
*
|
|
* Object have to be reserved!
|
|
*/
|
|
void amdgpu_vm_bo_rmv(struct amdgpu_device *adev,
|
|
struct amdgpu_bo_va *bo_va)
|
|
{
|
|
struct amdgpu_bo_va_mapping *mapping, *next;
|
|
struct amdgpu_vm *vm = bo_va->vm;
|
|
|
|
list_del(&bo_va->bo_list);
|
|
|
|
spin_lock(&vm->status_lock);
|
|
list_del(&bo_va->vm_status);
|
|
spin_unlock(&vm->status_lock);
|
|
|
|
list_for_each_entry_safe(mapping, next, &bo_va->valids, list) {
|
|
list_del(&mapping->list);
|
|
spin_lock(&vm->it_lock);
|
|
interval_tree_remove(&mapping->it, &vm->va);
|
|
spin_unlock(&vm->it_lock);
|
|
trace_amdgpu_vm_bo_unmap(bo_va, mapping);
|
|
spin_lock(&vm->freed_lock);
|
|
list_add(&mapping->list, &vm->freed);
|
|
spin_unlock(&vm->freed_lock);
|
|
}
|
|
list_for_each_entry_safe(mapping, next, &bo_va->invalids, list) {
|
|
list_del(&mapping->list);
|
|
spin_lock(&vm->it_lock);
|
|
interval_tree_remove(&mapping->it, &vm->va);
|
|
spin_unlock(&vm->it_lock);
|
|
kfree(mapping);
|
|
}
|
|
fence_put(bo_va->last_pt_update);
|
|
mutex_destroy(&bo_va->mutex);
|
|
kfree(bo_va);
|
|
}
|
|
|
|
/**
|
|
* amdgpu_vm_bo_invalidate - mark the bo as invalid
|
|
*
|
|
* @adev: amdgpu_device pointer
|
|
* @vm: requested vm
|
|
* @bo: amdgpu buffer object
|
|
*
|
|
* Mark @bo as invalid.
|
|
*/
|
|
void amdgpu_vm_bo_invalidate(struct amdgpu_device *adev,
|
|
struct amdgpu_bo *bo)
|
|
{
|
|
struct amdgpu_bo_va *bo_va;
|
|
|
|
list_for_each_entry(bo_va, &bo->va, bo_list) {
|
|
spin_lock(&bo_va->vm->status_lock);
|
|
if (list_empty(&bo_va->vm_status))
|
|
list_add(&bo_va->vm_status, &bo_va->vm->invalidated);
|
|
spin_unlock(&bo_va->vm->status_lock);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* amdgpu_vm_init - initialize a vm instance
|
|
*
|
|
* @adev: amdgpu_device pointer
|
|
* @vm: requested vm
|
|
*
|
|
* Init @vm fields.
|
|
*/
|
|
int amdgpu_vm_init(struct amdgpu_device *adev, struct amdgpu_vm *vm)
|
|
{
|
|
const unsigned align = min(AMDGPU_VM_PTB_ALIGN_SIZE,
|
|
AMDGPU_VM_PTE_COUNT * 8);
|
|
unsigned pd_size, pd_entries;
|
|
unsigned ring_instance;
|
|
struct amdgpu_ring *ring;
|
|
struct amd_sched_rq *rq;
|
|
int i, r;
|
|
|
|
for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
|
|
vm->ids[i].mgr_id = NULL;
|
|
vm->ids[i].flushed_updates = NULL;
|
|
}
|
|
vm->va = RB_ROOT;
|
|
spin_lock_init(&vm->status_lock);
|
|
INIT_LIST_HEAD(&vm->invalidated);
|
|
INIT_LIST_HEAD(&vm->cleared);
|
|
INIT_LIST_HEAD(&vm->freed);
|
|
spin_lock_init(&vm->it_lock);
|
|
spin_lock_init(&vm->freed_lock);
|
|
pd_size = amdgpu_vm_directory_size(adev);
|
|
pd_entries = amdgpu_vm_num_pdes(adev);
|
|
|
|
/* allocate page table array */
|
|
vm->page_tables = drm_calloc_large(pd_entries, sizeof(struct amdgpu_vm_pt));
|
|
if (vm->page_tables == NULL) {
|
|
DRM_ERROR("Cannot allocate memory for page table array\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* create scheduler entity for page table updates */
|
|
|
|
ring_instance = atomic_inc_return(&adev->vm_manager.vm_pte_next_ring);
|
|
ring_instance %= adev->vm_manager.vm_pte_num_rings;
|
|
ring = adev->vm_manager.vm_pte_rings[ring_instance];
|
|
rq = &ring->sched.sched_rq[AMD_SCHED_PRIORITY_KERNEL];
|
|
r = amd_sched_entity_init(&ring->sched, &vm->entity,
|
|
rq, amdgpu_sched_jobs);
|
|
if (r)
|
|
return r;
|
|
|
|
vm->page_directory_fence = NULL;
|
|
|
|
r = amdgpu_bo_create(adev, pd_size, align, true,
|
|
AMDGPU_GEM_DOMAIN_VRAM,
|
|
AMDGPU_GEM_CREATE_NO_CPU_ACCESS,
|
|
NULL, NULL, &vm->page_directory);
|
|
if (r)
|
|
goto error_free_sched_entity;
|
|
|
|
r = amdgpu_bo_reserve(vm->page_directory, false);
|
|
if (r)
|
|
goto error_free_page_directory;
|
|
|
|
r = amdgpu_vm_clear_bo(adev, vm, vm->page_directory);
|
|
amdgpu_bo_unreserve(vm->page_directory);
|
|
if (r)
|
|
goto error_free_page_directory;
|
|
|
|
return 0;
|
|
|
|
error_free_page_directory:
|
|
amdgpu_bo_unref(&vm->page_directory);
|
|
vm->page_directory = NULL;
|
|
|
|
error_free_sched_entity:
|
|
amd_sched_entity_fini(&ring->sched, &vm->entity);
|
|
|
|
return r;
|
|
}
|
|
|
|
/**
|
|
* amdgpu_vm_fini - tear down a vm instance
|
|
*
|
|
* @adev: amdgpu_device pointer
|
|
* @vm: requested vm
|
|
*
|
|
* Tear down @vm.
|
|
* Unbind the VM and remove all bos from the vm bo list
|
|
*/
|
|
void amdgpu_vm_fini(struct amdgpu_device *adev, struct amdgpu_vm *vm)
|
|
{
|
|
struct amdgpu_bo_va_mapping *mapping, *tmp;
|
|
int i;
|
|
|
|
amd_sched_entity_fini(vm->entity.sched, &vm->entity);
|
|
|
|
if (!RB_EMPTY_ROOT(&vm->va)) {
|
|
dev_err(adev->dev, "still active bo inside vm\n");
|
|
}
|
|
rbtree_postorder_for_each_entry_safe(mapping, tmp, &vm->va, it.rb) {
|
|
list_del(&mapping->list);
|
|
interval_tree_remove(&mapping->it, &vm->va);
|
|
kfree(mapping);
|
|
}
|
|
list_for_each_entry_safe(mapping, tmp, &vm->freed, list) {
|
|
list_del(&mapping->list);
|
|
kfree(mapping);
|
|
}
|
|
|
|
for (i = 0; i < amdgpu_vm_num_pdes(adev); i++)
|
|
amdgpu_bo_unref(&vm->page_tables[i].entry.robj);
|
|
drm_free_large(vm->page_tables);
|
|
|
|
amdgpu_bo_unref(&vm->page_directory);
|
|
fence_put(vm->page_directory_fence);
|
|
for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
|
|
struct amdgpu_vm_id *id = &vm->ids[i];
|
|
|
|
if (id->mgr_id)
|
|
atomic_long_cmpxchg(&id->mgr_id->owner,
|
|
(long)id, 0);
|
|
fence_put(id->flushed_updates);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* amdgpu_vm_manager_init - init the VM manager
|
|
*
|
|
* @adev: amdgpu_device pointer
|
|
*
|
|
* Initialize the VM manager structures
|
|
*/
|
|
void amdgpu_vm_manager_init(struct amdgpu_device *adev)
|
|
{
|
|
unsigned i;
|
|
|
|
INIT_LIST_HEAD(&adev->vm_manager.ids_lru);
|
|
|
|
/* skip over VMID 0, since it is the system VM */
|
|
for (i = 1; i < adev->vm_manager.num_ids; ++i) {
|
|
amdgpu_vm_reset_id(adev, i);
|
|
list_add_tail(&adev->vm_manager.ids[i].list,
|
|
&adev->vm_manager.ids_lru);
|
|
}
|
|
|
|
atomic_set(&adev->vm_manager.vm_pte_next_ring, 0);
|
|
}
|
|
|
|
/**
|
|
* amdgpu_vm_manager_fini - cleanup VM manager
|
|
*
|
|
* @adev: amdgpu_device pointer
|
|
*
|
|
* Cleanup the VM manager and free resources.
|
|
*/
|
|
void amdgpu_vm_manager_fini(struct amdgpu_device *adev)
|
|
{
|
|
unsigned i;
|
|
|
|
for (i = 0; i < AMDGPU_NUM_VM; ++i)
|
|
fence_put(adev->vm_manager.ids[i].active);
|
|
}
|