mirror of
https://github.com/torvalds/linux.git
synced 2026-04-18 23:03:57 -04:00
bf4afc53b7
This was done entirely with mindless brute force, using
git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'
to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.
Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.
For the same reason the 'flex' versions will be done as a separate
conversion.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
323 lines
6.3 KiB
C
323 lines
6.3 KiB
C
// SPDX-License-Identifier: GPL-2.0 OR MIT
|
|
/* Copyright 2017-2019 Qiang Yu <yuq825@gmail.com> */
|
|
|
|
#include <linux/slab.h>
|
|
#include <linux/dma-mapping.h>
|
|
|
|
#include "lima_device.h"
|
|
#include "lima_vm.h"
|
|
#include "lima_gem.h"
|
|
#include "lima_regs.h"
|
|
|
|
struct lima_bo_va {
|
|
struct list_head list;
|
|
unsigned int ref_count;
|
|
|
|
struct drm_mm_node node;
|
|
|
|
struct lima_vm *vm;
|
|
};
|
|
|
|
#define LIMA_VM_PD_SHIFT 22
|
|
#define LIMA_VM_PT_SHIFT 12
|
|
#define LIMA_VM_PB_SHIFT (LIMA_VM_PD_SHIFT + LIMA_VM_NUM_PT_PER_BT_SHIFT)
|
|
#define LIMA_VM_BT_SHIFT LIMA_VM_PT_SHIFT
|
|
|
|
#define LIMA_VM_PT_MASK ((1 << LIMA_VM_PD_SHIFT) - 1)
|
|
#define LIMA_VM_BT_MASK ((1 << LIMA_VM_PB_SHIFT) - 1)
|
|
|
|
#define LIMA_PDE(va) (va >> LIMA_VM_PD_SHIFT)
|
|
#define LIMA_PTE(va) ((va & LIMA_VM_PT_MASK) >> LIMA_VM_PT_SHIFT)
|
|
#define LIMA_PBE(va) (va >> LIMA_VM_PB_SHIFT)
|
|
#define LIMA_BTE(va) ((va & LIMA_VM_BT_MASK) >> LIMA_VM_BT_SHIFT)
|
|
|
|
|
|
static void lima_vm_unmap_range(struct lima_vm *vm, u32 start, u32 end)
|
|
{
|
|
u32 addr;
|
|
|
|
for (addr = start; addr <= end; addr += LIMA_PAGE_SIZE) {
|
|
u32 pbe = LIMA_PBE(addr);
|
|
u32 bte = LIMA_BTE(addr);
|
|
|
|
vm->bts[pbe].cpu[bte] = 0;
|
|
}
|
|
}
|
|
|
|
static int lima_vm_map_page(struct lima_vm *vm, dma_addr_t pa, u32 va)
|
|
{
|
|
u32 pbe = LIMA_PBE(va);
|
|
u32 bte = LIMA_BTE(va);
|
|
|
|
if (!vm->bts[pbe].cpu) {
|
|
dma_addr_t pts;
|
|
u32 *pd;
|
|
int j;
|
|
|
|
vm->bts[pbe].cpu = dma_alloc_wc(
|
|
vm->dev->dev, LIMA_PAGE_SIZE << LIMA_VM_NUM_PT_PER_BT_SHIFT,
|
|
&vm->bts[pbe].dma, GFP_KERNEL | __GFP_NOWARN | __GFP_ZERO);
|
|
if (!vm->bts[pbe].cpu)
|
|
return -ENOMEM;
|
|
|
|
pts = vm->bts[pbe].dma;
|
|
pd = vm->pd.cpu + (pbe << LIMA_VM_NUM_PT_PER_BT_SHIFT);
|
|
for (j = 0; j < LIMA_VM_NUM_PT_PER_BT; j++) {
|
|
pd[j] = pts | LIMA_VM_FLAG_PRESENT;
|
|
pts += LIMA_PAGE_SIZE;
|
|
}
|
|
}
|
|
|
|
vm->bts[pbe].cpu[bte] = pa | LIMA_VM_FLAGS_CACHE;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct lima_bo_va *
|
|
lima_vm_bo_find(struct lima_vm *vm, struct lima_bo *bo)
|
|
{
|
|
struct lima_bo_va *bo_va, *ret = NULL;
|
|
|
|
list_for_each_entry(bo_va, &bo->va, list) {
|
|
if (bo_va->vm == vm) {
|
|
ret = bo_va;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
int lima_vm_bo_add(struct lima_vm *vm, struct lima_bo *bo, bool create)
|
|
{
|
|
struct lima_bo_va *bo_va;
|
|
struct sg_dma_page_iter sg_iter;
|
|
int offset = 0, err;
|
|
|
|
mutex_lock(&bo->lock);
|
|
|
|
bo_va = lima_vm_bo_find(vm, bo);
|
|
if (bo_va) {
|
|
bo_va->ref_count++;
|
|
mutex_unlock(&bo->lock);
|
|
return 0;
|
|
}
|
|
|
|
/* should not create new bo_va if not asked by caller */
|
|
if (!create) {
|
|
mutex_unlock(&bo->lock);
|
|
return -ENOENT;
|
|
}
|
|
|
|
bo_va = kzalloc_obj(*bo_va);
|
|
if (!bo_va) {
|
|
err = -ENOMEM;
|
|
goto err_out0;
|
|
}
|
|
|
|
bo_va->vm = vm;
|
|
bo_va->ref_count = 1;
|
|
|
|
mutex_lock(&vm->lock);
|
|
|
|
err = drm_mm_insert_node(&vm->mm, &bo_va->node, lima_bo_size(bo));
|
|
if (err)
|
|
goto err_out1;
|
|
|
|
for_each_sgtable_dma_page(bo->base.sgt, &sg_iter, 0) {
|
|
err = lima_vm_map_page(vm, sg_page_iter_dma_address(&sg_iter),
|
|
bo_va->node.start + offset);
|
|
if (err)
|
|
goto err_out2;
|
|
|
|
offset += PAGE_SIZE;
|
|
}
|
|
|
|
mutex_unlock(&vm->lock);
|
|
|
|
list_add_tail(&bo_va->list, &bo->va);
|
|
|
|
mutex_unlock(&bo->lock);
|
|
return 0;
|
|
|
|
err_out2:
|
|
if (offset)
|
|
lima_vm_unmap_range(vm, bo_va->node.start, bo_va->node.start + offset - 1);
|
|
drm_mm_remove_node(&bo_va->node);
|
|
err_out1:
|
|
mutex_unlock(&vm->lock);
|
|
kfree(bo_va);
|
|
err_out0:
|
|
mutex_unlock(&bo->lock);
|
|
return err;
|
|
}
|
|
|
|
void lima_vm_bo_del(struct lima_vm *vm, struct lima_bo *bo)
|
|
{
|
|
struct lima_bo_va *bo_va;
|
|
u32 size;
|
|
|
|
mutex_lock(&bo->lock);
|
|
|
|
bo_va = lima_vm_bo_find(vm, bo);
|
|
if (--bo_va->ref_count > 0) {
|
|
mutex_unlock(&bo->lock);
|
|
return;
|
|
}
|
|
|
|
mutex_lock(&vm->lock);
|
|
|
|
size = bo->heap_size ? bo->heap_size : bo_va->node.size;
|
|
lima_vm_unmap_range(vm, bo_va->node.start,
|
|
bo_va->node.start + size - 1);
|
|
|
|
drm_mm_remove_node(&bo_va->node);
|
|
|
|
mutex_unlock(&vm->lock);
|
|
|
|
list_del(&bo_va->list);
|
|
|
|
mutex_unlock(&bo->lock);
|
|
|
|
kfree(bo_va);
|
|
}
|
|
|
|
u32 lima_vm_get_va(struct lima_vm *vm, struct lima_bo *bo)
|
|
{
|
|
struct lima_bo_va *bo_va;
|
|
u32 ret;
|
|
|
|
mutex_lock(&bo->lock);
|
|
|
|
bo_va = lima_vm_bo_find(vm, bo);
|
|
ret = bo_va->node.start;
|
|
|
|
mutex_unlock(&bo->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
struct lima_vm *lima_vm_create(struct lima_device *dev)
|
|
{
|
|
struct lima_vm *vm;
|
|
|
|
vm = kzalloc_obj(*vm);
|
|
if (!vm)
|
|
return NULL;
|
|
|
|
vm->dev = dev;
|
|
mutex_init(&vm->lock);
|
|
kref_init(&vm->refcount);
|
|
|
|
vm->pd.cpu = dma_alloc_wc(dev->dev, LIMA_PAGE_SIZE, &vm->pd.dma,
|
|
GFP_KERNEL | __GFP_NOWARN | __GFP_ZERO);
|
|
if (!vm->pd.cpu)
|
|
goto err_out0;
|
|
|
|
if (dev->dlbu_cpu) {
|
|
int err = lima_vm_map_page(
|
|
vm, dev->dlbu_dma, LIMA_VA_RESERVE_DLBU);
|
|
if (err)
|
|
goto err_out1;
|
|
}
|
|
|
|
drm_mm_init(&vm->mm, dev->va_start, dev->va_end - dev->va_start);
|
|
|
|
return vm;
|
|
|
|
err_out1:
|
|
dma_free_wc(dev->dev, LIMA_PAGE_SIZE, vm->pd.cpu, vm->pd.dma);
|
|
err_out0:
|
|
kfree(vm);
|
|
return NULL;
|
|
}
|
|
|
|
void lima_vm_release(struct kref *kref)
|
|
{
|
|
struct lima_vm *vm = container_of(kref, struct lima_vm, refcount);
|
|
int i;
|
|
|
|
drm_mm_takedown(&vm->mm);
|
|
|
|
for (i = 0; i < LIMA_VM_NUM_BT; i++) {
|
|
if (vm->bts[i].cpu)
|
|
dma_free_wc(vm->dev->dev, LIMA_PAGE_SIZE << LIMA_VM_NUM_PT_PER_BT_SHIFT,
|
|
vm->bts[i].cpu, vm->bts[i].dma);
|
|
}
|
|
|
|
if (vm->pd.cpu)
|
|
dma_free_wc(vm->dev->dev, LIMA_PAGE_SIZE, vm->pd.cpu, vm->pd.dma);
|
|
|
|
kfree(vm);
|
|
}
|
|
|
|
void lima_vm_print(struct lima_vm *vm)
|
|
{
|
|
int i, j, k;
|
|
u32 *pd, *pt;
|
|
|
|
if (!vm->pd.cpu)
|
|
return;
|
|
|
|
pd = vm->pd.cpu;
|
|
for (i = 0; i < LIMA_VM_NUM_BT; i++) {
|
|
if (!vm->bts[i].cpu)
|
|
continue;
|
|
|
|
pt = vm->bts[i].cpu;
|
|
for (j = 0; j < LIMA_VM_NUM_PT_PER_BT; j++) {
|
|
int idx = (i << LIMA_VM_NUM_PT_PER_BT_SHIFT) + j;
|
|
|
|
printk(KERN_INFO "lima vm pd %03x:%08x\n", idx, pd[idx]);
|
|
|
|
for (k = 0; k < LIMA_PAGE_ENT_NUM; k++) {
|
|
u32 pte = *pt++;
|
|
|
|
if (pte)
|
|
printk(KERN_INFO " pt %03x:%08x\n", k, pte);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
int lima_vm_map_bo(struct lima_vm *vm, struct lima_bo *bo, int pageoff)
|
|
{
|
|
struct lima_bo_va *bo_va;
|
|
struct sg_dma_page_iter sg_iter;
|
|
int offset = 0, err;
|
|
u32 base;
|
|
|
|
mutex_lock(&bo->lock);
|
|
|
|
bo_va = lima_vm_bo_find(vm, bo);
|
|
if (!bo_va) {
|
|
err = -ENOENT;
|
|
goto err_out0;
|
|
}
|
|
|
|
mutex_lock(&vm->lock);
|
|
|
|
base = bo_va->node.start + (pageoff << PAGE_SHIFT);
|
|
for_each_sgtable_dma_page(bo->base.sgt, &sg_iter, pageoff) {
|
|
err = lima_vm_map_page(vm, sg_page_iter_dma_address(&sg_iter),
|
|
base + offset);
|
|
if (err)
|
|
goto err_out1;
|
|
|
|
offset += PAGE_SIZE;
|
|
}
|
|
|
|
mutex_unlock(&vm->lock);
|
|
|
|
mutex_unlock(&bo->lock);
|
|
return 0;
|
|
|
|
err_out1:
|
|
if (offset)
|
|
lima_vm_unmap_range(vm, base, base + offset - 1);
|
|
mutex_unlock(&vm->lock);
|
|
err_out0:
|
|
mutex_unlock(&bo->lock);
|
|
return err;
|
|
}
|