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/*
* Copyright 2010 Red Hat Inc.
*
* 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: Ben Skeggs
*/
#include "drmP.h"
#include "nouveau_drv.h"
#include "nouveau_vm.h"
void
nvc0_vm_map_pgt(struct nouveau_gpuobj *pgd, u32 index,
struct nouveau_gpuobj *pgt[2])
{
u32 pde[2] = { 0, 0 };
if (pgt[0])
pde[1] = 0x00000001 | (pgt[0]->vinst >> 8);
if (pgt[1])
pde[0] = 0x00000001 | (pgt[1]->vinst >> 8);
nv_wo32(pgd, (index * 8) + 0, pde[0]);
nv_wo32(pgd, (index * 8) + 4, pde[1]);
}
static inline u64
nvc0_vm_addr(struct nouveau_vma *vma, u64 phys, u32 memtype, u32 target)
{
phys >>= 8;
phys |= 0x00000001; /* present */
if (vma->access & NV_MEM_ACCESS_SYS)
phys |= 0x00000002;
phys |= ((u64)target << 32);
phys |= ((u64)memtype << 36);
return phys;
}
void
nvc0_vm_map(struct nouveau_vma *vma, struct nouveau_gpuobj *pgt,
struct nouveau_mem *mem, u32 pte, u32 cnt, u64 phys, u64 delta)
{
u32 next = 1 << (vma->node->type - 8);
phys = nvc0_vm_addr(vma, phys, mem->memtype, 0);
pte <<= 3;
while (cnt--) {
nv_wo32(pgt, pte + 0, lower_32_bits(phys));
nv_wo32(pgt, pte + 4, upper_32_bits(phys));
phys += next;
pte += 8;
}
}
void
nvc0_vm_map_sg(struct nouveau_vma *vma, struct nouveau_gpuobj *pgt,
struct nouveau_mem *mem, u32 pte, u32 cnt, dma_addr_t *list)
{
u32 target = (vma->access & NV_MEM_ACCESS_NOSNOOP) ? 7 : 5;
pte <<= 3;
while (cnt--) {
u64 phys = nvc0_vm_addr(vma, *list++, mem->memtype, target);
nv_wo32(pgt, pte + 0, lower_32_bits(phys));
nv_wo32(pgt, pte + 4, upper_32_bits(phys));
pte += 8;
}
}
void
nvc0_vm_unmap(struct nouveau_gpuobj *pgt, u32 pte, u32 cnt)
{
pte <<= 3;
while (cnt--) {
nv_wo32(pgt, pte + 0, 0x00000000);
nv_wo32(pgt, pte + 4, 0x00000000);
pte += 8;
}
}
void
nvc0_vm_flush(struct nouveau_vm *vm)
{
struct drm_nouveau_private *dev_priv = vm->dev->dev_private;
struct nouveau_instmem_engine *pinstmem = &dev_priv->engine.instmem;
struct drm_device *dev = vm->dev;
struct nouveau_vm_pgd *vpgd;
unsigned long flags;
u32 engine;
engine = 1;
if (vm == dev_priv->bar1_vm || vm == dev_priv->bar3_vm)
engine |= 4;
pinstmem->flush(vm->dev);
spin_lock_irqsave(&dev_priv->vm_lock, flags);
list_for_each_entry(vpgd, &vm->pgd_list, head) {
/* looks like maybe a "free flush slots" counter, the
* faster you write to 0x100cbc to more it decreases
*/
if (!nv_wait_ne(dev, 0x100c80, 0x00ff0000, 0x00000000)) {
NV_ERROR(dev, "vm timeout 0: 0x%08x %d\n",
nv_rd32(dev, 0x100c80), engine);
}
nv_wr32(dev, 0x100cb8, vpgd->obj->vinst >> 8);
nv_wr32(dev, 0x100cbc, 0x80000000 | engine);
/* wait for flush to be queued? */
if (!nv_wait(dev, 0x100c80, 0x00008000, 0x00008000)) {
NV_ERROR(dev, "vm timeout 1: 0x%08x %d\n",
nv_rd32(dev, 0x100c80), engine);
}
}
spin_unlock_irqrestore(&dev_priv->vm_lock, flags);
}
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