* Alex Deucher
* Jerome Glisse
*/
-#include "drmP.h"
-#include "radeon_drm.h"
+#include <drm/drmP.h>
+#include <drm/radeon_drm.h>
#include "radeon.h"
#include "radeon_reg.h"
*/
/**
+ * 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_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
struct radeon_vm *vm;
struct radeon_bo_va *bo_va;
int r;
+ unsigned size;
if (!rdev->vm_manager.enabled) {
- /* mark first vm as always in use, it's the system one */
/* 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,
- rdev->vm_manager.max_pfn * 8 * 2,
+ RADEON_GPU_PAGE_ALIGN(size),
RADEON_GEM_DOMAIN_VRAM);
if (r) {
dev_err(rdev->dev, "failed to allocate vm bo (%dKB)\n",
return r;
}
- r = rdev->vm_manager.funcs->init(rdev);
+ 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);
/* restore page table */
list_for_each_entry(vm, &rdev->vm_manager.lru_vm, list) {
- if (vm->id == -1)
+ if (vm->page_directory == NULL)
continue;
list_for_each_entry(bo_va, &vm->va, vm_list) {
- struct ttm_mem_reg *mem = NULL;
- if (bo_va->valid)
- mem = &bo_va->bo->tbo.mem;
-
bo_va->valid = false;
- r = radeon_vm_bo_update_pte(rdev, vm, bo_va->bo, mem);
- if (r) {
- DRM_ERROR("Failed to update pte for vm %d!\n", vm->id);
- }
- }
-
- r = rdev->vm_manager.funcs->bind(rdev, vm, vm->id);
- if (r) {
- DRM_ERROR("Failed to bind vm %d!\n", vm->id);
}
}
return 0;
}
-/* global mutex must be lock */
/**
- * radeon_vm_unbind_locked - unbind a specific vm
+ * radeon_vm_free_pt - free the page table for a specific vm
*
* @rdev: radeon_device pointer
* @vm: vm to unbind
*
- * Unbind the requested vm (cayman+).
- * Wait for use of the VM to finish, then unbind the page table,
- * and free the page table memory.
+ * Free the page table of a specific vm (cayman+).
+ *
+ * Global and local mutex must be lock!
*/
-static void radeon_vm_unbind_locked(struct radeon_device *rdev,
+static void radeon_vm_free_pt(struct radeon_device *rdev,
struct radeon_vm *vm)
{
struct radeon_bo_va *bo_va;
+ int i;
- if (vm->id == -1) {
+ if (!vm->page_directory)
return;
- }
-
- /* wait for vm use to end */
- while (vm->fence) {
- int r;
- r = radeon_fence_wait(vm->fence, false);
- if (r)
- DRM_ERROR("error while waiting for fence: %d\n", r);
- if (r == -EDEADLK) {
- mutex_unlock(&rdev->vm_manager.lock);
- r = radeon_gpu_reset(rdev);
- mutex_lock(&rdev->vm_manager.lock);
- if (!r)
- continue;
- }
- break;
- }
- radeon_fence_unref(&vm->fence);
- /* hw unbind */
- rdev->vm_manager.funcs->unbind(rdev, vm);
- rdev->vm_manager.use_bitmap &= ~(1 << vm->id);
list_del_init(&vm->list);
- vm->id = -1;
- radeon_sa_bo_free(rdev, &vm->sa_bo, NULL);
- vm->pt = NULL;
+ 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);
}
/**
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);
- /* unbind all active vm */
+ /* free all allocated page tables */
list_for_each_entry_safe(vm, tmp, &rdev->vm_manager.lru_vm, list) {
- radeon_vm_unbind_locked(rdev, vm);
+ 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]);
}
- rdev->vm_manager.funcs->fini(rdev);
+ radeon_asic_vm_fini(rdev);
mutex_unlock(&rdev->vm_manager.lock);
radeon_sa_bo_manager_suspend(rdev, &rdev->vm_manager.sa_manager);
rdev->vm_manager.enabled = false;
}
-/* global mutex must be locked */
/**
- * radeon_vm_unbind - locked version of unbind
+ * radeon_vm_evict - evict page table to make room for new one
*
* @rdev: radeon_device pointer
- * @vm: vm to unbind
+ * @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.
*
- * Locked version that wraps radeon_vm_unbind_locked (cayman+).
+ * Global and local mutex must be locked!
*/
-void radeon_vm_unbind(struct radeon_device *rdev, struct radeon_vm *vm)
+int radeon_vm_evict(struct radeon_device *rdev, struct radeon_vm *vm)
{
- mutex_lock(&vm->mutex);
- radeon_vm_unbind_locked(rdev, vm);
- mutex_unlock(&vm->mutex);
+ 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;
}
-/* global and local mutex must be locked */
/**
- * radeon_vm_bind - bind a page table to a VMID
+ * radeon_vm_alloc_pt - allocates a page table for a VM
*
* @rdev: radeon_device pointer
* @vm: vm to bind
*
- * Bind the requested vm (cayman+).
- * Suballocate memory for the page table, allocate a VMID
- * and bind the page table to it, and finally start to populate
- * the page table.
+ * Allocate a page table for the requested vm (cayman+).
+ * Also starts to populate the page table.
* Returns 0 for success, error for failure.
+ *
+ * Global and local mutex must be locked!
*/
-int radeon_vm_bind(struct radeon_device *rdev, struct radeon_vm *vm)
+int radeon_vm_alloc_pt(struct radeon_device *rdev, struct radeon_vm *vm)
{
- struct radeon_vm *vm_evict;
- unsigned i;
- int id = -1, r;
+ unsigned pd_size, pts_size;
+ u64 *pd_addr;
+ int r;
if (vm == NULL) {
return -EINVAL;
}
- if (vm->id != -1) {
+ if (vm->page_directory != NULL) {
/* update lru */
list_del_init(&vm->list);
list_add_tail(&vm->list, &rdev->vm_manager.lru_vm);
}
retry:
- r = radeon_sa_bo_new(rdev, &rdev->vm_manager.sa_manager, &vm->sa_bo,
- RADEON_GPU_PAGE_ALIGN(vm->last_pfn * 8),
+ 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) {
- if (list_empty(&rdev->vm_manager.lru_vm)) {
+ if (r == -ENOMEM) {
+ r = radeon_vm_evict(rdev, vm);
+ if (r)
return r;
- }
- vm_evict = list_first_entry(&rdev->vm_manager.lru_vm, struct radeon_vm, list);
- radeon_vm_unbind(rdev, vm_evict);
goto retry;
- }
- vm->pt = radeon_sa_bo_cpu_addr(vm->sa_bo);
- vm->pt_gpu_addr = radeon_sa_bo_gpu_addr(vm->sa_bo);
- memset(vm->pt, 0, RADEON_GPU_PAGE_ALIGN(vm->last_pfn * 8));
-retry_id:
- /* search for free vm */
- for (i = 0; i < rdev->vm_manager.nvm; i++) {
- if (!(rdev->vm_manager.use_bitmap & (1 << i))) {
- id = i;
- break;
- }
- }
- /* evict vm if necessary */
- if (id == -1) {
- vm_evict = list_first_entry(&rdev->vm_manager.lru_vm, struct radeon_vm, list);
- radeon_vm_unbind(rdev, vm_evict);
- goto retry_id;
+ } else if (r) {
+ return r;
}
- /* do hw bind */
- r = rdev->vm_manager.funcs->bind(rdev, vm, id);
- if (r) {
- radeon_sa_bo_free(rdev, &vm->sa_bo, NULL);
- 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;
}
- rdev->vm_manager.use_bitmap |= 1 << id;
- vm->id = id;
+
list_add_tail(&vm->list, &rdev->vm_manager.lru_vm);
return radeon_vm_bo_update_pte(rdev, vm, rdev->ring_tmp_bo.bo,
&rdev->ring_tmp_bo.bo->tbo.mem);
}
-/* object have to be reserved */
+/**
+ * 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
- * @offset: requested offset of the buffer in the VM address space
- * @flags: attributes of pages (read/write/valid/etc.)
*
* Add @bo into the requested vm (cayman+).
- * Add @bo to the list of bos associated with the vm and validate
- * the offset requested within the vm address space.
- * Returns 0 for success, error for failure.
+ * 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!
*/
-int radeon_vm_bo_add(struct radeon_device *rdev,
- struct radeon_vm *vm,
- struct radeon_bo *bo,
- uint64_t offset,
- uint32_t flags)
+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, *tmp;
- struct list_head *head;
- uint64_t size = radeon_bo_size(bo), last_offset = 0;
- unsigned last_pfn;
+ struct radeon_bo_va *bo_va;
bo_va = kzalloc(sizeof(struct radeon_bo_va), GFP_KERNEL);
if (bo_va == NULL) {
- return -ENOMEM;
+ return NULL;
}
bo_va->vm = vm;
bo_va->bo = bo;
- bo_va->soffset = offset;
- bo_va->eoffset = offset + size;
- bo_va->flags = flags;
+ 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);
- /* make sure object fit at this offset */
- if (bo_va->soffset >= bo_va->eoffset) {
- kfree(bo_va);
- return -EINVAL;
- }
-
- last_pfn = bo_va->eoffset / RADEON_GPU_PAGE_SIZE;
- if (last_pfn > rdev->vm_manager.max_pfn) {
- kfree(bo_va);
- dev_err(rdev->dev, "va above limit (0x%08X > 0x%08X)\n",
- last_pfn, rdev->vm_manager.max_pfn);
- return -EINVAL;
- }
mutex_lock(&vm->mutex);
- if (last_pfn > vm->last_pfn) {
- /* release mutex and lock in right order */
- mutex_unlock(&vm->mutex);
- mutex_lock(&rdev->vm_manager.lock);
- mutex_lock(&vm->mutex);
- /* and check again */
- if (last_pfn > vm->last_pfn) {
- /* grow va space 32M by 32M */
- unsigned align = ((32 << 20) >> 12) - 1;
- radeon_vm_unbind_locked(rdev, vm);
- vm->last_pfn = (last_pfn + align) & ~align;
+ 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;
}
- mutex_unlock(&rdev->vm_manager.lock);
+
+ } 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->soffset >= last_offset && bo_va->eoffset < tmp->soffset) {
+ 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 (bo_va->soffset >= tmp->soffset && bo_va->soffset < tmp->eoffset) {
+ 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, (unsigned)bo_va->soffset, tmp->bo,
+ bo_va->bo, (unsigned)bo_va->soffset, tmp->bo,
(unsigned)tmp->soffset, (unsigned)tmp->eoffset);
- kfree(bo_va);
mutex_unlock(&vm->mutex);
return -EINVAL;
}
last_offset = tmp->eoffset;
head = &tmp->vm_list;
}
- list_add(&bo_va->vm_list, head);
- list_add_tail(&bo_va->bo_list, &bo->va);
+
+ 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_get_addr - get the physical address of the page
+ * radeon_vm_map_gart - get the physical address of a gart page
*
* @rdev: radeon_device pointer
- * @mem: ttm mem
- * @pfn: pfn
+ * @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.
*/
-static u64 radeon_vm_get_addr(struct radeon_device *rdev,
- struct ttm_mem_reg *mem,
- unsigned pfn)
+uint64_t radeon_vm_map_gart(struct radeon_device *rdev, uint64_t addr)
{
- u64 addr = 0;
-
- switch (mem->mem_type) {
- case TTM_PL_VRAM:
- addr = (mem->start << PAGE_SHIFT);
- addr += pfn * RADEON_GPU_PAGE_SIZE;
- addr += rdev->vm_manager.vram_base_offset;
- break;
- case TTM_PL_TT:
- /* offset inside page table */
- addr = mem->start << PAGE_SHIFT;
- addr += pfn * RADEON_GPU_PAGE_SIZE;
- addr = addr >> PAGE_SHIFT;
- /* page table offset */
- addr = rdev->gart.pages_addr[addr];
- /* in case cpu page size != gpu page size*/
- addr += (pfn * RADEON_GPU_PAGE_SIZE) & (~PAGE_MASK);
- break;
- default:
- break;
- }
- return 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,
+ 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, 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, 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,
+ 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) ||
+ ((count + nptes) > 1 << 11)) {
+
+ if (count) {
+ radeon_asic_vm_set_page(rdev, 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, last_pte, last_dst, count,
+ RADEON_GPU_PAGE_SIZE, flags);
+ }
}
-/* object have to be reserved & global and local mutex must be locked */
/**
* radeon_vm_bo_update_pte - map a bo into the vm page table
*
*
* 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_ring *ring = &rdev->ring[ridx];
+ struct radeon_semaphore *sem = NULL;
struct radeon_bo_va *bo_va;
- unsigned ngpu_pages, i;
- uint64_t addr = 0, pfn;
- uint32_t flags;
+ unsigned nptes, npdes, ndw;
+ uint64_t addr;
+ int r;
/* nothing to do if vm isn't bound */
- if (vm->id == -1)
+ if (vm->page_directory == NULL)
return 0;
- bo_va = radeon_bo_va(bo, vm);
+ 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->valid && mem)
+ 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;
- ngpu_pages = radeon_bo_ngpu_pages(bo);
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;
+ }
+
+ if (vm->fence && radeon_fence_signaled(vm->fence)) {
+ radeon_fence_unref(&vm->fence);
}
- pfn = bo_va->soffset / RADEON_GPU_PAGE_SIZE;
- flags = rdev->vm_manager.funcs->page_flags(rdev, bo_va->vm, bo_va->flags);
- for (i = 0, addr = 0; i < ngpu_pages; i++) {
- if (mem && bo_va->valid) {
- addr = radeon_vm_get_addr(rdev, mem, i);
+
+ if (vm->fence && vm->fence->ring != ridx) {
+ r = radeon_semaphore_create(rdev, &sem);
+ if (r) {
+ return r;
}
- rdev->vm_manager.funcs->set_page(rdev, bo_va->vm, i + pfn, addr, flags);
}
- rdev->vm_manager.funcs->tlb_flush(rdev, bo_va->vm);
+
+ nptes = radeon_bo_ngpu_pages(bo);
+
+ /* assume two extra pdes in case the mapping overlaps the borders */
+ npdes = (nptes >> RADEON_VM_BLOCK_SIZE) + 2;
+
+ /* estimate number of dw needed */
+ /* semaphore, fence and padding */
+ ndw = 32;
+
+ if (RADEON_VM_BLOCK_SIZE > 11)
+ /* reserve space for one header for every 2k dwords */
+ ndw += (nptes >> 11) * 3;
+ else
+ /* reserve space for one header for
+ every (1 << BLOCK_SIZE) entries */
+ ndw += (nptes >> RADEON_VM_BLOCK_SIZE) * 3;
+
+ /* reserve space for pte addresses */
+ ndw += nptes * 2;
+
+ /* reserve space for one header for every 2k dwords */
+ ndw += (npdes >> 11) * 3;
+
+ /* reserve space for pde addresses */
+ ndw += npdes * 2;
+
+ r = radeon_ring_lock(rdev, ring, ndw);
+ if (r) {
+ return r;
+ }
+
+ if (sem && radeon_fence_need_sync(vm->fence, ridx)) {
+ radeon_semaphore_sync_rings(rdev, sem, vm->fence->ring, ridx);
+ radeon_fence_note_sync(vm->fence, ridx);
+ }
+
+ r = radeon_vm_update_pdes(rdev, vm, bo_va->soffset, bo_va->eoffset);
+ if (r) {
+ radeon_ring_unlock_undo(rdev, ring);
+ return r;
+ }
+
+ radeon_vm_update_ptes(rdev, vm, bo_va->soffset, bo_va->eoffset,
+ addr, bo_va->flags);
+
+ radeon_fence_unref(&vm->fence);
+ r = radeon_fence_emit(rdev, &vm->fence, ridx);
+ if (r) {
+ radeon_ring_unlock_undo(rdev, ring);
+ return r;
+ }
+ radeon_ring_unlock_commit(rdev, ring);
+ radeon_semaphore_free(rdev, &sem, vm->fence);
+ radeon_fence_unref(&vm->last_flush);
+
return 0;
}
-/* object have to be reserved */
/**
* radeon_vm_bo_rmv - remove a bo to a specific vm
*
* @rdev: radeon_device pointer
- * @vm: requested vm
- * @bo: radeon buffer object
+ * @bo_va: requested bo_va
*
- * Remove @bo from the requested vm (cayman+).
- * Remove @bo from the list of bos associated with the vm and
- * remove the ptes for @bo in the page table.
+ * 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_vm *vm,
- struct radeon_bo *bo)
+ struct radeon_bo_va *bo_va)
{
- struct radeon_bo_va *bo_va;
int r;
- bo_va = radeon_bo_va(bo, vm);
- if (bo_va == NULL)
- return 0;
-
- /* wait for va use to end */
- while (bo_va->fence) {
- r = radeon_fence_wait(bo_va->fence, false);
- if (r) {
- DRM_ERROR("error while waiting for fence: %d\n", r);
- }
- if (r == -EDEADLK) {
- r = radeon_gpu_reset(rdev);
- if (!r)
- continue;
- }
- break;
- }
- radeon_fence_unref(&bo_va->fence);
-
mutex_lock(&rdev->vm_manager.lock);
- mutex_lock(&vm->mutex);
- radeon_vm_bo_update_pte(rdev, vm, bo, NULL);
+ mutex_lock(&bo_va->vm->mutex);
+ 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(&vm->mutex);
+ mutex_unlock(&bo_va->vm->mutex);
list_del(&bo_va->bo_list);
kfree(bo_va);
- return 0;
+ return r;
}
/**
*/
int radeon_vm_init(struct radeon_device *rdev, struct radeon_vm *vm)
{
+ struct radeon_bo_va *bo_va;
int r;
- vm->id = -1;
+ vm->id = 0;
vm->fence = NULL;
mutex_init(&vm->mutex);
INIT_LIST_HEAD(&vm->list);
INIT_LIST_HEAD(&vm->va);
- /* SI requires equal sized PTs for all VMs, so always set
- * last_pfn to max_pfn. cayman allows variable sized
- * pts so we can grow then as needed. Once we switch
- * to two level pts we can unify this again.
- */
- if (rdev->family >= CHIP_TAHITI)
- vm->last_pfn = rdev->vm_manager.max_pfn;
- else
- vm->last_pfn = 0;
+
/* map the ib pool buffer at 0 in virtual address space, set
* read only
*/
- r = radeon_vm_bo_add(rdev, vm, rdev->ring_tmp_bo.bo, 0,
- RADEON_VM_PAGE_READABLE | RADEON_VM_PAGE_SNOOPED);
+ bo_va = radeon_vm_bo_add(rdev, vm, rdev->ring_tmp_bo.bo);
+ r = radeon_vm_bo_set_addr(rdev, bo_va, RADEON_VA_IB_OFFSET,
+ RADEON_VM_PAGE_READABLE |
+ RADEON_VM_PAGE_SNOOPED);
return r;
}
mutex_lock(&rdev->vm_manager.lock);
mutex_lock(&vm->mutex);
- radeon_vm_unbind_locked(rdev, vm);
+ radeon_vm_free_pt(rdev, vm);
mutex_unlock(&rdev->vm_manager.lock);
/* remove all bo at this point non are busy any more because unbind
*/
r = radeon_bo_reserve(rdev->ring_tmp_bo.bo, false);
if (!r) {
- bo_va = radeon_bo_va(rdev->ring_tmp_bo.bo, vm);
+ bo_va = radeon_vm_bo_find(vm, rdev->ring_tmp_bo.bo);
list_del_init(&bo_va->bo_list);
list_del_init(&bo_va->vm_list);
- radeon_fence_unref(&bo_va->fence);
radeon_bo_unreserve(rdev->ring_tmp_bo.bo);
kfree(bo_va);
}
r = radeon_bo_reserve(bo_va->bo, false);
if (!r) {
list_del_init(&bo_va->bo_list);
- radeon_fence_unref(&bo_va->fence);
radeon_bo_unreserve(bo_va->bo);
kfree(bo_va);
}
}
+ radeon_fence_unref(&vm->fence);
+ radeon_fence_unref(&vm->last_flush);
mutex_unlock(&vm->mutex);
}
projects / profile / ivi / kernel-adaptation-intel-automotive.git / blobdiff