28,7 → 28,6 |
#include <drm/drmP.h> |
#include <drm/radeon_drm.h> |
#include "radeon.h" |
#include "radeon_reg.h" |
|
|
static inline void * |
138,7 → 137,7 |
if (rdev->gart.robj == NULL) { |
r = radeon_bo_create(rdev, rdev->gart.table_size, |
PAGE_SIZE, true, RADEON_GEM_DOMAIN_VRAM, |
NULL, &rdev->gart.robj); |
0, NULL, &rdev->gart.robj); |
if (r) { |
return r; |
} |
216,7 → 215,6 |
if (rdev->gart.robj == NULL) { |
return; |
} |
radeon_gart_table_vram_unpin(rdev); |
radeon_bo_unref(&rdev->gart.robj); |
} |
|
254,7 → 252,8 |
page_base = rdev->gart.pages_addr[p]; |
for (j = 0; j < (PAGE_SIZE / RADEON_GPU_PAGE_SIZE); j++, t++) { |
if (rdev->gart.ptr) { |
radeon_gart_set_page(rdev, t, page_base); |
radeon_gart_set_page(rdev, t, page_base, |
RADEON_GART_PAGE_DUMMY); |
} |
page_base += RADEON_GPU_PAGE_SIZE; |
} |
272,6 → 271,7 |
* @pages: number of pages to bind |
* @pagelist: pages to bind |
* @dma_addr: DMA addresses of pages |
* @flags: RADEON_GART_PAGE_* flags |
* |
* Binds the requested pages to the gart page table |
* (all asics). |
278,7 → 278,8 |
* Returns 0 for success, -EINVAL for failure. |
*/ |
int radeon_gart_bind(struct radeon_device *rdev, unsigned offset, |
int pages, u32 *pagelist, dma_addr_t *dma_addr) |
int pages, struct page **pagelist, dma_addr_t *dma_addr, |
uint32_t flags) |
{ |
unsigned t; |
unsigned p; |
285,8 → 286,6 |
uint64_t page_base; |
int i, j; |
|
// dbgprintf("offset %x pages %d list %x\n", |
// offset, pages, pagelist); |
if (!rdev->gart.ready) { |
WARN(1, "trying to bind memory to uninitialized GART !\n"); |
return -EINVAL; |
295,12 → 294,12 |
p = t / (PAGE_SIZE / RADEON_GPU_PAGE_SIZE); |
|
for (i = 0; i < pages; i++, p++) { |
rdev->gart.pages_addr[p] = pagelist[i] & ~4095; |
rdev->gart.pages_addr[p] = dma_addr[i]; |
rdev->gart.pages[p] = pagelist[i]; |
if (rdev->gart.ptr) { |
page_base = rdev->gart.pages_addr[p]; |
for (j = 0; j < (PAGE_SIZE / RADEON_GPU_PAGE_SIZE); j++, t++) { |
radeon_gart_set_page(rdev, t, page_base); |
radeon_gart_set_page(rdev, t, page_base, flags); |
page_base += RADEON_GPU_PAGE_SIZE; |
} |
} |
311,33 → 310,6 |
} |
|
/** |
* radeon_gart_restore - bind all pages in the gart page table |
* |
* @rdev: radeon_device pointer |
* |
* Binds all pages in the gart page table (all asics). |
* Used to rebuild the gart table on device startup or resume. |
*/ |
void radeon_gart_restore(struct radeon_device *rdev) |
{ |
int i, j, t; |
u64 page_base; |
|
if (!rdev->gart.ptr) { |
return; |
} |
for (i = 0, t = 0; i < rdev->gart.num_cpu_pages; i++) { |
page_base = rdev->gart.pages_addr[i]; |
for (j = 0; j < (PAGE_SIZE / RADEON_GPU_PAGE_SIZE); j++, t++) { |
radeon_gart_set_page(rdev, t, page_base); |
page_base += RADEON_GPU_PAGE_SIZE; |
} |
} |
mb(); |
radeon_gart_tlb_flush(rdev); |
} |
|
/** |
* radeon_gart_init - init the driver info for managing the gart |
* |
* @rdev: radeon_device pointer |
402,894 → 374,6 |
vfree(rdev->gart.pages_addr); |
rdev->gart.pages = NULL; |
rdev->gart.pages_addr = NULL; |
} |
|
/* |
* 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. |
*/ |
|
/* |
* vm helpers |
* |
* TODO bind a default page at vm initialization for default address |
*/ |
|
/** |
* radeon_vm_num_pde - return the number of page directory entries |
* |
* @rdev: radeon_device pointer |
* |
* Calculate the number of page directory entries (cayman+). |
*/ |
static unsigned radeon_vm_num_pdes(struct radeon_device *rdev) |
{ |
return rdev->vm_manager.max_pfn >> RADEON_VM_BLOCK_SIZE; |
radeon_dummy_page_fini(rdev); |
} |
|
/** |
* radeon_vm_directory_size - returns the size of the page directory in bytes |
* |
* @rdev: radeon_device pointer |
* |
* Calculate the size of the page directory in bytes (cayman+). |
*/ |
static unsigned radeon_vm_directory_size(struct radeon_device *rdev) |
{ |
return RADEON_GPU_PAGE_ALIGN(radeon_vm_num_pdes(rdev) * 8); |
} |
|
/** |
* radeon_vm_manager_init - init the vm manager |
* |
* @rdev: radeon_device pointer |
* |
* Init the vm manager (cayman+). |
* Returns 0 for success, error for failure. |
*/ |
int radeon_vm_manager_init(struct radeon_device *rdev) |
{ |
struct radeon_vm *vm; |
struct radeon_bo_va *bo_va; |
int r; |
unsigned size; |
|
if (!rdev->vm_manager.enabled) { |
/* allocate enough for 2 full VM pts */ |
size = radeon_vm_directory_size(rdev); |
size += rdev->vm_manager.max_pfn * 8; |
size *= 2; |
r = radeon_sa_bo_manager_init(rdev, &rdev->vm_manager.sa_manager, |
RADEON_GPU_PAGE_ALIGN(size), |
RADEON_GEM_DOMAIN_VRAM); |
if (r) { |
dev_err(rdev->dev, "failed to allocate vm bo (%dKB)\n", |
(rdev->vm_manager.max_pfn * 8) >> 10); |
return r; |
} |
|
r = radeon_asic_vm_init(rdev); |
if (r) |
return r; |
|
rdev->vm_manager.enabled = true; |
|
r = radeon_sa_bo_manager_start(rdev, &rdev->vm_manager.sa_manager); |
if (r) |
return r; |
} |
|
/* restore page table */ |
list_for_each_entry(vm, &rdev->vm_manager.lru_vm, list) { |
if (vm->page_directory == NULL) |
continue; |
|
list_for_each_entry(bo_va, &vm->va, vm_list) { |
bo_va->valid = false; |
} |
} |
return 0; |
} |
|
/** |
* radeon_vm_free_pt - free the page table for a specific vm |
* |
* @rdev: radeon_device pointer |
* @vm: vm to unbind |
* |
* Free the page table of a specific vm (cayman+). |
* |
* Global and local mutex must be lock! |
*/ |
static void radeon_vm_free_pt(struct radeon_device *rdev, |
struct radeon_vm *vm) |
{ |
struct radeon_bo_va *bo_va; |
int i; |
|
if (!vm->page_directory) |
return; |
|
list_del_init(&vm->list); |
radeon_sa_bo_free(rdev, &vm->page_directory, vm->fence); |
|
list_for_each_entry(bo_va, &vm->va, vm_list) { |
bo_va->valid = false; |
} |
|
if (vm->page_tables == NULL) |
return; |
|
for (i = 0; i < radeon_vm_num_pdes(rdev); i++) |
radeon_sa_bo_free(rdev, &vm->page_tables[i], vm->fence); |
|
kfree(vm->page_tables); |
} |
|
/** |
* radeon_vm_manager_fini - tear down the vm manager |
* |
* @rdev: radeon_device pointer |
* |
* Tear down the VM manager (cayman+). |
*/ |
void radeon_vm_manager_fini(struct radeon_device *rdev) |
{ |
struct radeon_vm *vm, *tmp; |
int i; |
|
if (!rdev->vm_manager.enabled) |
return; |
|
mutex_lock(&rdev->vm_manager.lock); |
/* free all allocated page tables */ |
list_for_each_entry_safe(vm, tmp, &rdev->vm_manager.lru_vm, list) { |
mutex_lock(&vm->mutex); |
radeon_vm_free_pt(rdev, vm); |
mutex_unlock(&vm->mutex); |
} |
for (i = 0; i < RADEON_NUM_VM; ++i) { |
radeon_fence_unref(&rdev->vm_manager.active[i]); |
} |
radeon_asic_vm_fini(rdev); |
mutex_unlock(&rdev->vm_manager.lock); |
|
radeon_sa_bo_manager_suspend(rdev, &rdev->vm_manager.sa_manager); |
radeon_sa_bo_manager_fini(rdev, &rdev->vm_manager.sa_manager); |
rdev->vm_manager.enabled = false; |
} |
|
/** |
* radeon_vm_evict - evict page table to make room for new one |
* |
* @rdev: radeon_device pointer |
* @vm: VM we want to allocate something for |
* |
* Evict a VM from the lru, making sure that it isn't @vm. (cayman+). |
* Returns 0 for success, -ENOMEM for failure. |
* |
* Global and local mutex must be locked! |
*/ |
static int radeon_vm_evict(struct radeon_device *rdev, struct radeon_vm *vm) |
{ |
struct radeon_vm *vm_evict; |
|
if (list_empty(&rdev->vm_manager.lru_vm)) |
return -ENOMEM; |
|
vm_evict = list_first_entry(&rdev->vm_manager.lru_vm, |
struct radeon_vm, list); |
if (vm_evict == vm) |
return -ENOMEM; |
|
mutex_lock(&vm_evict->mutex); |
radeon_vm_free_pt(rdev, vm_evict); |
mutex_unlock(&vm_evict->mutex); |
return 0; |
} |
|
/** |
* radeon_vm_alloc_pt - allocates a page table for a VM |
* |
* @rdev: radeon_device pointer |
* @vm: vm to bind |
* |
* Allocate a page table for the requested vm (cayman+). |
* Returns 0 for success, error for failure. |
* |
* Global and local mutex must be locked! |
*/ |
int radeon_vm_alloc_pt(struct radeon_device *rdev, struct radeon_vm *vm) |
{ |
unsigned pd_size, pts_size; |
u64 *pd_addr; |
int r; |
|
if (vm == NULL) { |
return -EINVAL; |
} |
|
if (vm->page_directory != NULL) { |
return 0; |
} |
|
retry: |
pd_size = RADEON_GPU_PAGE_ALIGN(radeon_vm_directory_size(rdev)); |
r = radeon_sa_bo_new(rdev, &rdev->vm_manager.sa_manager, |
&vm->page_directory, pd_size, |
RADEON_GPU_PAGE_SIZE, false); |
if (r == -ENOMEM) { |
r = radeon_vm_evict(rdev, vm); |
if (r) |
return r; |
goto retry; |
|
} else if (r) { |
return r; |
} |
|
vm->pd_gpu_addr = radeon_sa_bo_gpu_addr(vm->page_directory); |
|
/* Initially clear the page directory */ |
pd_addr = radeon_sa_bo_cpu_addr(vm->page_directory); |
memset(pd_addr, 0, pd_size); |
|
pts_size = radeon_vm_num_pdes(rdev) * sizeof(struct radeon_sa_bo *); |
vm->page_tables = kzalloc(pts_size, GFP_KERNEL); |
|
if (vm->page_tables == NULL) { |
DRM_ERROR("Cannot allocate memory for page table array\n"); |
radeon_sa_bo_free(rdev, &vm->page_directory, vm->fence); |
return -ENOMEM; |
} |
|
return 0; |
} |
|
/** |
* radeon_vm_add_to_lru - add VMs page table to LRU list |
* |
* @rdev: radeon_device pointer |
* @vm: vm to add to LRU |
* |
* Add the allocated page table to the LRU list (cayman+). |
* |
* Global mutex must be locked! |
*/ |
void radeon_vm_add_to_lru(struct radeon_device *rdev, struct radeon_vm *vm) |
{ |
list_del_init(&vm->list); |
list_add_tail(&vm->list, &rdev->vm_manager.lru_vm); |
} |
|
/** |
* radeon_vm_grab_id - allocate the next free VMID |
* |
* @rdev: radeon_device pointer |
* @vm: vm to allocate id for |
* @ring: ring we want to submit job to |
* |
* Allocate an id for the vm (cayman+). |
* Returns the fence we need to sync to (if any). |
* |
* Global and local mutex must be locked! |
*/ |
struct radeon_fence *radeon_vm_grab_id(struct radeon_device *rdev, |
struct radeon_vm *vm, int ring) |
{ |
struct radeon_fence *best[RADEON_NUM_RINGS] = {}; |
unsigned choices[2] = {}; |
unsigned i; |
|
/* check if the id is still valid */ |
if (vm->fence && vm->fence == rdev->vm_manager.active[vm->id]) |
return NULL; |
|
/* we definately need to flush */ |
radeon_fence_unref(&vm->last_flush); |
|
/* skip over VMID 0, since it is the system VM */ |
for (i = 1; i < rdev->vm_manager.nvm; ++i) { |
struct radeon_fence *fence = rdev->vm_manager.active[i]; |
|
if (fence == NULL) { |
/* found a free one */ |
vm->id = i; |
return NULL; |
} |
|
if (radeon_fence_is_earlier(fence, best[fence->ring])) { |
best[fence->ring] = fence; |
choices[fence->ring == ring ? 0 : 1] = i; |
} |
} |
|
for (i = 0; i < 2; ++i) { |
if (choices[i]) { |
vm->id = choices[i]; |
return rdev->vm_manager.active[choices[i]]; |
} |
} |
|
/* should never happen */ |
BUG(); |
return NULL; |
} |
|
/** |
* radeon_vm_fence - remember fence for vm |
* |
* @rdev: radeon_device pointer |
* @vm: vm we want to fence |
* @fence: fence to remember |
* |
* Fence the vm (cayman+). |
* Set the fence used to protect page table and id. |
* |
* Global and local mutex must be locked! |
*/ |
void radeon_vm_fence(struct radeon_device *rdev, |
struct radeon_vm *vm, |
struct radeon_fence *fence) |
{ |
radeon_fence_unref(&rdev->vm_manager.active[vm->id]); |
rdev->vm_manager.active[vm->id] = radeon_fence_ref(fence); |
|
radeon_fence_unref(&vm->fence); |
vm->fence = radeon_fence_ref(fence); |
} |
|
/** |
* radeon_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 (cayman+). |
* 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 radeon_bo_va *radeon_vm_bo_find(struct radeon_vm *vm, |
struct radeon_bo *bo) |
{ |
struct radeon_bo_va *bo_va; |
|
list_for_each_entry(bo_va, &bo->va, bo_list) { |
if (bo_va->vm == vm) { |
return bo_va; |
} |
} |
return NULL; |
} |
|
/** |
* radeon_vm_bo_add - add a bo to a specific vm |
* |
* @rdev: radeon_device pointer |
* @vm: requested vm |
* @bo: radeon buffer object |
* |
* Add @bo into the requested vm (cayman+). |
* 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 radeon_bo_va *radeon_vm_bo_add(struct radeon_device *rdev, |
struct radeon_vm *vm, |
struct radeon_bo *bo) |
{ |
struct radeon_bo_va *bo_va; |
|
bo_va = kzalloc(sizeof(struct radeon_bo_va), GFP_KERNEL); |
if (bo_va == NULL) { |
return NULL; |
} |
bo_va->vm = vm; |
bo_va->bo = bo; |
bo_va->soffset = 0; |
bo_va->eoffset = 0; |
bo_va->flags = 0; |
bo_va->valid = false; |
bo_va->ref_count = 1; |
INIT_LIST_HEAD(&bo_va->bo_list); |
INIT_LIST_HEAD(&bo_va->vm_list); |
|
mutex_lock(&vm->mutex); |
list_add(&bo_va->vm_list, &vm->va); |
list_add_tail(&bo_va->bo_list, &bo->va); |
mutex_unlock(&vm->mutex); |
|
return bo_va; |
} |
|
/** |
* radeon_vm_bo_set_addr - set bos virtual address inside a vm |
* |
* @rdev: radeon_device pointer |
* @bo_va: bo_va to store the address |
* @soffset: requested offset of the buffer in the VM address space |
* @flags: attributes of pages (read/write/valid/etc.) |
* |
* Set offset of @bo_va (cayman+). |
* Validate and set the offset requested within the vm address space. |
* Returns 0 for success, error for failure. |
* |
* Object has to be reserved! |
*/ |
int radeon_vm_bo_set_addr(struct radeon_device *rdev, |
struct radeon_bo_va *bo_va, |
uint64_t soffset, |
uint32_t flags) |
{ |
uint64_t size = radeon_bo_size(bo_va->bo); |
uint64_t eoffset, last_offset = 0; |
struct radeon_vm *vm = bo_va->vm; |
struct radeon_bo_va *tmp; |
struct list_head *head; |
unsigned last_pfn; |
|
if (soffset) { |
/* make sure object fit at this offset */ |
eoffset = soffset + size; |
if (soffset >= eoffset) { |
return -EINVAL; |
} |
|
last_pfn = eoffset / RADEON_GPU_PAGE_SIZE; |
if (last_pfn > rdev->vm_manager.max_pfn) { |
dev_err(rdev->dev, "va above limit (0x%08X > 0x%08X)\n", |
last_pfn, rdev->vm_manager.max_pfn); |
return -EINVAL; |
} |
|
} else { |
eoffset = last_pfn = 0; |
} |
|
mutex_lock(&vm->mutex); |
head = &vm->va; |
last_offset = 0; |
list_for_each_entry(tmp, &vm->va, vm_list) { |
if (bo_va == tmp) { |
/* skip over currently modified bo */ |
continue; |
} |
|
if (soffset >= last_offset && eoffset <= tmp->soffset) { |
/* bo can be added before this one */ |
break; |
} |
if (eoffset > tmp->soffset && soffset < tmp->eoffset) { |
/* bo and tmp overlap, invalid offset */ |
dev_err(rdev->dev, "bo %p va 0x%08X conflict with (bo %p 0x%08X 0x%08X)\n", |
bo_va->bo, (unsigned)bo_va->soffset, tmp->bo, |
(unsigned)tmp->soffset, (unsigned)tmp->eoffset); |
mutex_unlock(&vm->mutex); |
return -EINVAL; |
} |
last_offset = tmp->eoffset; |
head = &tmp->vm_list; |
} |
|
bo_va->soffset = soffset; |
bo_va->eoffset = eoffset; |
bo_va->flags = flags; |
bo_va->valid = false; |
list_move(&bo_va->vm_list, head); |
|
mutex_unlock(&vm->mutex); |
return 0; |
} |
|
/** |
* radeon_vm_map_gart - get the physical address of a gart page |
* |
* @rdev: radeon_device pointer |
* @addr: the unmapped addr |
* |
* Look up the physical address of the page that the pte resolves |
* to (cayman+). |
* Returns the physical address of the page. |
*/ |
uint64_t radeon_vm_map_gart(struct radeon_device *rdev, uint64_t addr) |
{ |
uint64_t result; |
|
/* page table offset */ |
result = rdev->gart.pages_addr[addr >> PAGE_SHIFT]; |
|
/* in case cpu page size != gpu page size*/ |
result |= addr & (~PAGE_MASK); |
|
return result; |
} |
|
/** |
* radeon_vm_update_pdes - make sure that page directory is valid |
* |
* @rdev: radeon_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 (cayman+). |
* Returns 0 for success, error for failure. |
* |
* Global and local mutex must be locked! |
*/ |
static int radeon_vm_update_pdes(struct radeon_device *rdev, |
struct radeon_vm *vm, |
struct radeon_ib *ib, |
uint64_t start, uint64_t end) |
{ |
static const uint32_t incr = RADEON_VM_PTE_COUNT * 8; |
|
uint64_t last_pde = ~0, last_pt = ~0; |
unsigned count = 0; |
uint64_t pt_idx; |
int r; |
|
start = (start / RADEON_GPU_PAGE_SIZE) >> RADEON_VM_BLOCK_SIZE; |
end = (end / RADEON_GPU_PAGE_SIZE) >> RADEON_VM_BLOCK_SIZE; |
|
/* walk over the address space and update the page directory */ |
for (pt_idx = start; pt_idx <= end; ++pt_idx) { |
uint64_t pde, pt; |
|
if (vm->page_tables[pt_idx]) |
continue; |
|
retry: |
r = radeon_sa_bo_new(rdev, &rdev->vm_manager.sa_manager, |
&vm->page_tables[pt_idx], |
RADEON_VM_PTE_COUNT * 8, |
RADEON_GPU_PAGE_SIZE, false); |
|
if (r == -ENOMEM) { |
r = radeon_vm_evict(rdev, vm); |
if (r) |
return r; |
goto retry; |
} else if (r) { |
return r; |
} |
|
pde = vm->pd_gpu_addr + pt_idx * 8; |
|
pt = radeon_sa_bo_gpu_addr(vm->page_tables[pt_idx]); |
|
if (((last_pde + 8 * count) != pde) || |
((last_pt + incr * count) != pt)) { |
|
if (count) { |
radeon_asic_vm_set_page(rdev, ib, last_pde, |
last_pt, count, incr, |
RADEON_VM_PAGE_VALID); |
} |
|
count = 1; |
last_pde = pde; |
last_pt = pt; |
} else { |
++count; |
} |
} |
|
if (count) { |
radeon_asic_vm_set_page(rdev, ib, last_pde, last_pt, count, |
incr, RADEON_VM_PAGE_VALID); |
|
} |
|
return 0; |
} |
|
/** |
* radeon_vm_update_ptes - make sure that page tables are valid |
* |
* @rdev: radeon_device pointer |
* @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 (cayman+). |
* |
* Global and local mutex must be locked! |
*/ |
static void radeon_vm_update_ptes(struct radeon_device *rdev, |
struct radeon_vm *vm, |
struct radeon_ib *ib, |
uint64_t start, uint64_t end, |
uint64_t dst, uint32_t flags) |
{ |
static const uint64_t mask = RADEON_VM_PTE_COUNT - 1; |
|
uint64_t last_pte = ~0, last_dst = ~0; |
unsigned count = 0; |
uint64_t addr; |
|
start = start / RADEON_GPU_PAGE_SIZE; |
end = end / RADEON_GPU_PAGE_SIZE; |
|
/* walk over the address space and update the page tables */ |
for (addr = start; addr < end; ) { |
uint64_t pt_idx = addr >> RADEON_VM_BLOCK_SIZE; |
unsigned nptes; |
uint64_t pte; |
|
if ((addr & ~mask) == (end & ~mask)) |
nptes = end - addr; |
else |
nptes = RADEON_VM_PTE_COUNT - (addr & mask); |
|
pte = radeon_sa_bo_gpu_addr(vm->page_tables[pt_idx]); |
pte += (addr & mask) * 8; |
|
if ((last_pte + 8 * count) != pte) { |
|
if (count) { |
radeon_asic_vm_set_page(rdev, ib, last_pte, |
last_dst, count, |
RADEON_GPU_PAGE_SIZE, |
flags); |
} |
|
count = nptes; |
last_pte = pte; |
last_dst = dst; |
} else { |
count += nptes; |
} |
|
addr += nptes; |
dst += nptes * RADEON_GPU_PAGE_SIZE; |
} |
|
if (count) { |
radeon_asic_vm_set_page(rdev, ib, last_pte, |
last_dst, count, |
RADEON_GPU_PAGE_SIZE, flags); |
} |
} |
|
/** |
* radeon_vm_bo_update_pte - map a bo into the vm page table |
* |
* @rdev: radeon_device pointer |
* @vm: requested vm |
* @bo: radeon buffer object |
* @mem: ttm mem |
* |
* Fill in the page table entries for @bo (cayman+). |
* Returns 0 for success, -EINVAL for failure. |
* |
* Object have to be reserved & global and local mutex must be locked! |
*/ |
int radeon_vm_bo_update_pte(struct radeon_device *rdev, |
struct radeon_vm *vm, |
struct radeon_bo *bo, |
struct ttm_mem_reg *mem) |
{ |
unsigned ridx = rdev->asic->vm.pt_ring_index; |
struct radeon_ib ib; |
struct radeon_bo_va *bo_va; |
unsigned nptes, npdes, ndw; |
uint64_t addr; |
int r; |
|
/* nothing to do if vm isn't bound */ |
if (vm->page_directory == NULL) |
return 0; |
|
bo_va = radeon_vm_bo_find(vm, bo); |
if (bo_va == NULL) { |
dev_err(rdev->dev, "bo %p not in vm %p\n", bo, vm); |
return -EINVAL; |
} |
|
if (!bo_va->soffset) { |
dev_err(rdev->dev, "bo %p don't has a mapping in vm %p\n", |
bo, vm); |
return -EINVAL; |
} |
|
if ((bo_va->valid && mem) || (!bo_va->valid && mem == NULL)) |
return 0; |
|
bo_va->flags &= ~RADEON_VM_PAGE_VALID; |
bo_va->flags &= ~RADEON_VM_PAGE_SYSTEM; |
if (mem) { |
addr = mem->start << PAGE_SHIFT; |
if (mem->mem_type != TTM_PL_SYSTEM) { |
bo_va->flags |= RADEON_VM_PAGE_VALID; |
bo_va->valid = true; |
} |
if (mem->mem_type == TTM_PL_TT) { |
bo_va->flags |= RADEON_VM_PAGE_SYSTEM; |
} else { |
addr += rdev->vm_manager.vram_base_offset; |
} |
} else { |
addr = 0; |
bo_va->valid = false; |
} |
|
nptes = radeon_bo_ngpu_pages(bo); |
|
/* assume two extra pdes in case the mapping overlaps the borders */ |
npdes = (nptes >> RADEON_VM_BLOCK_SIZE) + 2; |
|
/* padding, etc. */ |
ndw = 64; |
|
if (RADEON_VM_BLOCK_SIZE > 11) |
/* reserve space for one header for every 2k dwords */ |
ndw += (nptes >> 11) * 4; |
else |
/* reserve space for one header for |
every (1 << BLOCK_SIZE) entries */ |
ndw += (nptes >> RADEON_VM_BLOCK_SIZE) * 4; |
|
/* reserve space for pte addresses */ |
ndw += nptes * 2; |
|
/* reserve space for one header for every 2k dwords */ |
ndw += (npdes >> 11) * 4; |
|
/* reserve space for pde addresses */ |
ndw += npdes * 2; |
|
/* update too big for an IB */ |
if (ndw > 0xfffff) |
return -ENOMEM; |
|
r = radeon_ib_get(rdev, ridx, &ib, NULL, ndw * 4); |
ib.length_dw = 0; |
|
r = radeon_vm_update_pdes(rdev, vm, &ib, bo_va->soffset, bo_va->eoffset); |
if (r) { |
radeon_ib_free(rdev, &ib); |
return r; |
} |
|
radeon_vm_update_ptes(rdev, vm, &ib, bo_va->soffset, bo_va->eoffset, |
addr, bo_va->flags); |
|
radeon_ib_sync_to(&ib, vm->fence); |
r = radeon_ib_schedule(rdev, &ib, NULL); |
if (r) { |
radeon_ib_free(rdev, &ib); |
return r; |
} |
radeon_fence_unref(&vm->fence); |
vm->fence = radeon_fence_ref(ib.fence); |
radeon_ib_free(rdev, &ib); |
radeon_fence_unref(&vm->last_flush); |
|
return 0; |
} |
|
/** |
* radeon_vm_bo_rmv - remove a bo to a specific vm |
* |
* @rdev: radeon_device pointer |
* @bo_va: requested bo_va |
* |
* Remove @bo_va->bo from the requested vm (cayman+). |
* Remove @bo_va->bo from the list of bos associated with the bo_va->vm and |
* remove the ptes for @bo_va in the page table. |
* Returns 0 for success. |
* |
* Object have to be reserved! |
*/ |
int radeon_vm_bo_rmv(struct radeon_device *rdev, |
struct radeon_bo_va *bo_va) |
{ |
int r = 0; |
|
mutex_lock(&rdev->vm_manager.lock); |
mutex_lock(&bo_va->vm->mutex); |
if (bo_va->soffset) { |
r = radeon_vm_bo_update_pte(rdev, bo_va->vm, bo_va->bo, NULL); |
} |
mutex_unlock(&rdev->vm_manager.lock); |
list_del(&bo_va->vm_list); |
mutex_unlock(&bo_va->vm->mutex); |
list_del(&bo_va->bo_list); |
|
kfree(bo_va); |
return r; |
} |
|
/** |
* radeon_vm_bo_invalidate - mark the bo as invalid |
* |
* @rdev: radeon_device pointer |
* @vm: requested vm |
* @bo: radeon buffer object |
* |
* Mark @bo as invalid (cayman+). |
*/ |
void radeon_vm_bo_invalidate(struct radeon_device *rdev, |
struct radeon_bo *bo) |
{ |
struct radeon_bo_va *bo_va; |
|
list_for_each_entry(bo_va, &bo->va, bo_list) { |
bo_va->valid = false; |
} |
} |
|
/** |
* radeon_vm_init - initialize a vm instance |
* |
* @rdev: radeon_device pointer |
* @vm: requested vm |
* |
* Init @vm fields (cayman+). |
*/ |
void radeon_vm_init(struct radeon_device *rdev, struct radeon_vm *vm) |
{ |
vm->id = 0; |
vm->fence = NULL; |
mutex_init(&vm->mutex); |
INIT_LIST_HEAD(&vm->list); |
INIT_LIST_HEAD(&vm->va); |
} |
|
/** |
* radeon_vm_fini - tear down a vm instance |
* |
* @rdev: radeon_device pointer |
* @vm: requested vm |
* |
* Tear down @vm (cayman+). |
* Unbind the VM and remove all bos from the vm bo list |
*/ |
void radeon_vm_fini(struct radeon_device *rdev, struct radeon_vm *vm) |
{ |
struct radeon_bo_va *bo_va, *tmp; |
int r; |
|
mutex_lock(&rdev->vm_manager.lock); |
mutex_lock(&vm->mutex); |
radeon_vm_free_pt(rdev, vm); |
mutex_unlock(&rdev->vm_manager.lock); |
|
if (!list_empty(&vm->va)) { |
dev_err(rdev->dev, "still active bo inside vm\n"); |
} |
list_for_each_entry_safe(bo_va, tmp, &vm->va, vm_list) { |
list_del_init(&bo_va->vm_list); |
r = radeon_bo_reserve(bo_va->bo, false); |
if (!r) { |
list_del_init(&bo_va->bo_list); |
radeon_bo_unreserve(bo_va->bo); |
kfree(bo_va); |
} |
} |
radeon_fence_unref(&vm->fence); |
radeon_fence_unref(&vm->last_flush); |
mutex_unlock(&vm->mutex); |
} |