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linux/drivers/gpu/drm/nouveau/nv50_instmem.c

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/*
* Copyright (C) 2007 Ben Skeggs.
*
* All Rights Reserved.
*
* 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 (including the
* next paragraph) 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 OWNER(S) AND/OR ITS SUPPLIERS 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.
*
*/
#include "drmP.h"
#include "drm.h"
#include "nouveau_drv.h"
struct nv50_instmem_priv {
uint32_t save1700[5]; /* 0x1700->0x1710 */
struct nouveau_gpuobj_ref *pramin_pt;
struct nouveau_gpuobj_ref *pramin_bar;
struct nouveau_gpuobj_ref *fb_bar;
bool last_access_wr;
};
#define NV50_INSTMEM_PAGE_SHIFT 12
#define NV50_INSTMEM_PAGE_SIZE (1 << NV50_INSTMEM_PAGE_SHIFT)
#define NV50_INSTMEM_PT_SIZE(a) (((a) >> 12) << 3)
/*NOTE: - Assumes 0x1700 already covers the correct MiB of PRAMIN
*/
#define BAR0_WI32(g, o, v) do { \
uint32_t offset; \
if ((g)->im_backing) { \
offset = (g)->im_backing_start; \
} else { \
offset = chan->ramin->gpuobj->im_backing_start; \
offset += (g)->im_pramin->start; \
} \
offset += (o); \
nv_wr32(dev, NV_RAMIN + (offset & 0xfffff), (v)); \
} while (0)
int
nv50_instmem_init(struct drm_device *dev)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_channel *chan;
uint32_t c_offset, c_size, c_ramfc, c_vmpd, c_base, pt_size;
uint32_t save_nv001700;
uint64_t v;
struct nv50_instmem_priv *priv;
int ret, i;
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
dev_priv->engine.instmem.priv = priv;
/* Save state, will restore at takedown. */
for (i = 0x1700; i <= 0x1710; i += 4)
priv->save1700[(i-0x1700)/4] = nv_rd32(dev, i);
/* Reserve the last MiB of VRAM, we should probably try to avoid
* setting up the below tables over the top of the VBIOS image at
* some point.
*/
dev_priv->ramin_rsvd_vram = 1 << 20;
c_offset = dev_priv->vram_size - dev_priv->ramin_rsvd_vram;
c_size = 128 << 10;
c_vmpd = ((dev_priv->chipset & 0xf0) == 0x50) ? 0x1400 : 0x200;
c_ramfc = ((dev_priv->chipset & 0xf0) == 0x50) ? 0x0 : 0x20;
c_base = c_vmpd + 0x4000;
pt_size = NV50_INSTMEM_PT_SIZE(dev_priv->ramin_size);
NV_DEBUG(dev, " Rsvd VRAM base: 0x%08x\n", c_offset);
NV_DEBUG(dev, " VBIOS image: 0x%08x\n",
(nv_rd32(dev, 0x619f04) & ~0xff) << 8);
NV_DEBUG(dev, " Aperture size: %d MiB\n", dev_priv->ramin_size >> 20);
NV_DEBUG(dev, " PT size: %d KiB\n", pt_size >> 10);
/* Determine VM layout, we need to do this first to make sure
* we allocate enough memory for all the page tables.
*/
dev_priv->vm_gart_base = roundup(NV50_VM_BLOCK, NV50_VM_BLOCK);
dev_priv->vm_gart_size = NV50_VM_BLOCK;
dev_priv->vm_vram_base = dev_priv->vm_gart_base + dev_priv->vm_gart_size;
dev_priv->vm_vram_size = dev_priv->vram_size;
if (dev_priv->vm_vram_size > NV50_VM_MAX_VRAM)
dev_priv->vm_vram_size = NV50_VM_MAX_VRAM;
dev_priv->vm_vram_size = roundup(dev_priv->vm_vram_size, NV50_VM_BLOCK);
dev_priv->vm_vram_pt_nr = dev_priv->vm_vram_size / NV50_VM_BLOCK;
dev_priv->vm_end = dev_priv->vm_vram_base + dev_priv->vm_vram_size;
NV_DEBUG(dev, "NV50VM: GART 0x%016llx-0x%016llx\n",
dev_priv->vm_gart_base,
dev_priv->vm_gart_base + dev_priv->vm_gart_size - 1);
NV_DEBUG(dev, "NV50VM: VRAM 0x%016llx-0x%016llx\n",
dev_priv->vm_vram_base,
dev_priv->vm_vram_base + dev_priv->vm_vram_size - 1);
c_size += dev_priv->vm_vram_pt_nr * (NV50_VM_BLOCK / 65536 * 8);
/* Map BAR0 PRAMIN aperture over the memory we want to use */
save_nv001700 = nv_rd32(dev, NV50_PUNK_BAR0_PRAMIN);
nv_wr32(dev, NV50_PUNK_BAR0_PRAMIN, (c_offset >> 16));
/* Create a fake channel, and use it as our "dummy" channels 0/127.
* The main reason for creating a channel is so we can use the gpuobj
* code. However, it's probably worth noting that NVIDIA also setup
* their channels 0/127 with the same values they configure here.
* So, there may be some other reason for doing this.
*
* Have to create the entire channel manually, as the real channel
* creation code assumes we have PRAMIN access, and we don't until
* we're done here.
*/
chan = kzalloc(sizeof(*chan), GFP_KERNEL);
if (!chan)
return -ENOMEM;
chan->id = 0;
chan->dev = dev;
chan->file_priv = (struct drm_file *)-2;
dev_priv->fifos[0] = dev_priv->fifos[127] = chan;
/* Channel's PRAMIN object + heap */
ret = nouveau_gpuobj_new_fake(dev, 0, c_offset, c_size, 0,
NULL, &chan->ramin);
if (ret)
return ret;
if (nouveau_mem_init_heap(&chan->ramin_heap, c_base, c_size - c_base))
return -ENOMEM;
/* RAMFC + zero channel's PRAMIN up to start of VM pagedir */
ret = nouveau_gpuobj_new_fake(dev, c_ramfc, c_offset + c_ramfc,
0x4000, 0, NULL, &chan->ramfc);
if (ret)
return ret;
for (i = 0; i < c_vmpd; i += 4)
BAR0_WI32(chan->ramin->gpuobj, i, 0);
/* VM page directory */
ret = nouveau_gpuobj_new_fake(dev, c_vmpd, c_offset + c_vmpd,
0x4000, 0, &chan->vm_pd, NULL);
if (ret)
return ret;
for (i = 0; i < 0x4000; i += 8) {
BAR0_WI32(chan->vm_pd, i + 0x00, 0x00000000);
BAR0_WI32(chan->vm_pd, i + 0x04, 0x00000000);
}
/* PRAMIN page table, cheat and map into VM at 0x0000000000.
* We map the entire fake channel into the start of the PRAMIN BAR
*/
ret = nouveau_gpuobj_new_ref(dev, chan, NULL, 0, pt_size, 0x1000,
0, &priv->pramin_pt);
if (ret)
return ret;
v = c_offset | 1;
if (dev_priv->vram_sys_base) {
v += dev_priv->vram_sys_base;
v |= 0x30;
}
i = 0;
while (v < dev_priv->vram_sys_base + c_offset + c_size) {
BAR0_WI32(priv->pramin_pt->gpuobj, i + 0, lower_32_bits(v));
BAR0_WI32(priv->pramin_pt->gpuobj, i + 4, upper_32_bits(v));
v += 0x1000;
i += 8;
}
while (i < pt_size) {
BAR0_WI32(priv->pramin_pt->gpuobj, i + 0, 0x00000000);
BAR0_WI32(priv->pramin_pt->gpuobj, i + 4, 0x00000000);
i += 8;
}
BAR0_WI32(chan->vm_pd, 0x00, priv->pramin_pt->instance | 0x63);
BAR0_WI32(chan->vm_pd, 0x04, 0x00000000);
/* VRAM page table(s), mapped into VM at +1GiB */
for (i = 0; i < dev_priv->vm_vram_pt_nr; i++) {
ret = nouveau_gpuobj_new_ref(dev, chan, NULL, 0,
NV50_VM_BLOCK/65536*8, 0, 0,
&chan->vm_vram_pt[i]);
if (ret) {
NV_ERROR(dev, "Error creating VRAM page tables: %d\n",
ret);
dev_priv->vm_vram_pt_nr = i;
return ret;
}
dev_priv->vm_vram_pt[i] = chan->vm_vram_pt[i]->gpuobj;
for (v = 0; v < dev_priv->vm_vram_pt[i]->im_pramin->size;
v += 4)
BAR0_WI32(dev_priv->vm_vram_pt[i], v, 0);
BAR0_WI32(chan->vm_pd, 0x10 + (i*8),
chan->vm_vram_pt[i]->instance | 0x61);
BAR0_WI32(chan->vm_pd, 0x14 + (i*8), 0);
}
/* DMA object for PRAMIN BAR */
ret = nouveau_gpuobj_new_ref(dev, chan, chan, 0, 6*4, 16, 0,
&priv->pramin_bar);
if (ret)
return ret;
BAR0_WI32(priv->pramin_bar->gpuobj, 0x00, 0x7fc00000);
BAR0_WI32(priv->pramin_bar->gpuobj, 0x04, dev_priv->ramin_size - 1);
BAR0_WI32(priv->pramin_bar->gpuobj, 0x08, 0x00000000);
BAR0_WI32(priv->pramin_bar->gpuobj, 0x0c, 0x00000000);
BAR0_WI32(priv->pramin_bar->gpuobj, 0x10, 0x00000000);
BAR0_WI32(priv->pramin_bar->gpuobj, 0x14, 0x00000000);
/* DMA object for FB BAR */
ret = nouveau_gpuobj_new_ref(dev, chan, chan, 0, 6*4, 16, 0,
&priv->fb_bar);
if (ret)
return ret;
BAR0_WI32(priv->fb_bar->gpuobj, 0x00, 0x7fc00000);
BAR0_WI32(priv->fb_bar->gpuobj, 0x04, 0x40000000 +
drm_get_resource_len(dev, 1) - 1);
BAR0_WI32(priv->fb_bar->gpuobj, 0x08, 0x40000000);
BAR0_WI32(priv->fb_bar->gpuobj, 0x0c, 0x00000000);
BAR0_WI32(priv->fb_bar->gpuobj, 0x10, 0x00000000);
BAR0_WI32(priv->fb_bar->gpuobj, 0x14, 0x00000000);
/* Poke the relevant regs, and pray it works :) */
nv_wr32(dev, NV50_PUNK_BAR_CFG_BASE, (chan->ramin->instance >> 12));
nv_wr32(dev, NV50_PUNK_UNK1710, 0);
nv_wr32(dev, NV50_PUNK_BAR_CFG_BASE, (chan->ramin->instance >> 12) |
NV50_PUNK_BAR_CFG_BASE_VALID);
nv_wr32(dev, NV50_PUNK_BAR1_CTXDMA, (priv->fb_bar->instance >> 4) |
NV50_PUNK_BAR1_CTXDMA_VALID);
nv_wr32(dev, NV50_PUNK_BAR3_CTXDMA, (priv->pramin_bar->instance >> 4) |
NV50_PUNK_BAR3_CTXDMA_VALID);
for (i = 0; i < 8; i++)
nv_wr32(dev, 0x1900 + (i*4), 0);
/* Assume that praying isn't enough, check that we can re-read the
* entire fake channel back from the PRAMIN BAR */
dev_priv->engine.instmem.prepare_access(dev, false);
for (i = 0; i < c_size; i += 4) {
if (nv_rd32(dev, NV_RAMIN + i) != nv_ri32(dev, i)) {
NV_ERROR(dev, "Error reading back PRAMIN at 0x%08x\n",
i);
dev_priv->engine.instmem.finish_access(dev);
return -EINVAL;
}
}
dev_priv->engine.instmem.finish_access(dev);
nv_wr32(dev, NV50_PUNK_BAR0_PRAMIN, save_nv001700);
/* Global PRAMIN heap */
if (nouveau_mem_init_heap(&dev_priv->ramin_heap,
c_size, dev_priv->ramin_size - c_size)) {
dev_priv->ramin_heap = NULL;
NV_ERROR(dev, "Failed to init RAMIN heap\n");
}
/*XXX: incorrect, but needed to make hash func "work" */
dev_priv->ramht_offset = 0x10000;
dev_priv->ramht_bits = 9;
dev_priv->ramht_size = (1 << dev_priv->ramht_bits);
return 0;
}
void
nv50_instmem_takedown(struct drm_device *dev)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nv50_instmem_priv *priv = dev_priv->engine.instmem.priv;
struct nouveau_channel *chan = dev_priv->fifos[0];
int i;
NV_DEBUG(dev, "\n");
if (!priv)
return;
/* Restore state from before init */
for (i = 0x1700; i <= 0x1710; i += 4)
nv_wr32(dev, i, priv->save1700[(i - 0x1700) / 4]);
nouveau_gpuobj_ref_del(dev, &priv->fb_bar);
nouveau_gpuobj_ref_del(dev, &priv->pramin_bar);
nouveau_gpuobj_ref_del(dev, &priv->pramin_pt);
/* Destroy dummy channel */
if (chan) {
for (i = 0; i < dev_priv->vm_vram_pt_nr; i++) {
nouveau_gpuobj_ref_del(dev, &chan->vm_vram_pt[i]);
dev_priv->vm_vram_pt[i] = NULL;
}
dev_priv->vm_vram_pt_nr = 0;
nouveau_gpuobj_del(dev, &chan->vm_pd);
nouveau_gpuobj_ref_del(dev, &chan->ramfc);
nouveau_gpuobj_ref_del(dev, &chan->ramin);
nouveau_mem_takedown(&chan->ramin_heap);
dev_priv->fifos[0] = dev_priv->fifos[127] = NULL;
kfree(chan);
}
dev_priv->engine.instmem.priv = NULL;
kfree(priv);
}
int
nv50_instmem_suspend(struct drm_device *dev)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_channel *chan = dev_priv->fifos[0];
struct nouveau_gpuobj *ramin = chan->ramin->gpuobj;
int i;
ramin->im_backing_suspend = vmalloc(ramin->im_pramin->size);
if (!ramin->im_backing_suspend)
return -ENOMEM;
for (i = 0; i < ramin->im_pramin->size; i += 4)
ramin->im_backing_suspend[i/4] = nv_ri32(dev, i);
return 0;
}
void
nv50_instmem_resume(struct drm_device *dev)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nv50_instmem_priv *priv = dev_priv->engine.instmem.priv;
struct nouveau_channel *chan = dev_priv->fifos[0];
struct nouveau_gpuobj *ramin = chan->ramin->gpuobj;
int i;
nv_wr32(dev, NV50_PUNK_BAR0_PRAMIN, (ramin->im_backing_start >> 16));
for (i = 0; i < ramin->im_pramin->size; i += 4)
BAR0_WI32(ramin, i, ramin->im_backing_suspend[i/4]);
vfree(ramin->im_backing_suspend);
ramin->im_backing_suspend = NULL;
/* Poke the relevant regs, and pray it works :) */
nv_wr32(dev, NV50_PUNK_BAR_CFG_BASE, (chan->ramin->instance >> 12));
nv_wr32(dev, NV50_PUNK_UNK1710, 0);
nv_wr32(dev, NV50_PUNK_BAR_CFG_BASE, (chan->ramin->instance >> 12) |
NV50_PUNK_BAR_CFG_BASE_VALID);
nv_wr32(dev, NV50_PUNK_BAR1_CTXDMA, (priv->fb_bar->instance >> 4) |
NV50_PUNK_BAR1_CTXDMA_VALID);
nv_wr32(dev, NV50_PUNK_BAR3_CTXDMA, (priv->pramin_bar->instance >> 4) |
NV50_PUNK_BAR3_CTXDMA_VALID);
for (i = 0; i < 8; i++)
nv_wr32(dev, 0x1900 + (i*4), 0);
}
int
nv50_instmem_populate(struct drm_device *dev, struct nouveau_gpuobj *gpuobj,
uint32_t *sz)
{
int ret;
if (gpuobj->im_backing)
return -EINVAL;
*sz = ALIGN(*sz, NV50_INSTMEM_PAGE_SIZE);
if (*sz == 0)
return -EINVAL;
ret = nouveau_bo_new(dev, NULL, *sz, 0, TTM_PL_FLAG_VRAM, 0, 0x0000,
true, false, &gpuobj->im_backing);
if (ret) {
NV_ERROR(dev, "error getting PRAMIN backing pages: %d\n", ret);
return ret;
}
ret = nouveau_bo_pin(gpuobj->im_backing, TTM_PL_FLAG_VRAM);
if (ret) {
NV_ERROR(dev, "error pinning PRAMIN backing VRAM: %d\n", ret);
nouveau_bo_ref(NULL, &gpuobj->im_backing);
return ret;
}
gpuobj->im_backing_start = gpuobj->im_backing->bo.mem.mm_node->start;
gpuobj->im_backing_start <<= PAGE_SHIFT;
return 0;
}
void
nv50_instmem_clear(struct drm_device *dev, struct nouveau_gpuobj *gpuobj)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
if (gpuobj && gpuobj->im_backing) {
if (gpuobj->im_bound)
dev_priv->engine.instmem.unbind(dev, gpuobj);
nouveau_bo_unpin(gpuobj->im_backing);
nouveau_bo_ref(NULL, &gpuobj->im_backing);
gpuobj->im_backing = NULL;
}
}
int
nv50_instmem_bind(struct drm_device *dev, struct nouveau_gpuobj *gpuobj)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nv50_instmem_priv *priv = dev_priv->engine.instmem.priv;
struct nouveau_gpuobj *pramin_pt = priv->pramin_pt->gpuobj;
uint32_t pte, pte_end;
uint64_t vram;
if (!gpuobj->im_backing || !gpuobj->im_pramin || gpuobj->im_bound)
return -EINVAL;
NV_DEBUG(dev, "st=0x%0llx sz=0x%0llx\n",
gpuobj->im_pramin->start, gpuobj->im_pramin->size);
pte = (gpuobj->im_pramin->start >> 12) << 1;
pte_end = ((gpuobj->im_pramin->size >> 12) << 1) + pte;
vram = gpuobj->im_backing_start;
NV_DEBUG(dev, "pramin=0x%llx, pte=%d, pte_end=%d\n",
gpuobj->im_pramin->start, pte, pte_end);
NV_DEBUG(dev, "first vram page: 0x%08x\n", gpuobj->im_backing_start);
vram |= 1;
if (dev_priv->vram_sys_base) {
vram += dev_priv->vram_sys_base;
vram |= 0x30;
}
dev_priv->engine.instmem.prepare_access(dev, true);
while (pte < pte_end) {
nv_wo32(dev, pramin_pt, pte++, lower_32_bits(vram));
nv_wo32(dev, pramin_pt, pte++, upper_32_bits(vram));
vram += NV50_INSTMEM_PAGE_SIZE;
}
dev_priv->engine.instmem.finish_access(dev);
nv_wr32(dev, 0x100c80, 0x00040001);
if (!nv_wait(0x100c80, 0x00000001, 0x00000000)) {
NV_ERROR(dev, "timeout: (0x100c80 & 1) == 0 (1)\n");
NV_ERROR(dev, "0x100c80 = 0x%08x\n", nv_rd32(dev, 0x100c80));
return -EBUSY;
}
nv_wr32(dev, 0x100c80, 0x00060001);
if (!nv_wait(0x100c80, 0x00000001, 0x00000000)) {
NV_ERROR(dev, "timeout: (0x100c80 & 1) == 0 (2)\n");
NV_ERROR(dev, "0x100c80 = 0x%08x\n", nv_rd32(dev, 0x100c80));
return -EBUSY;
}
gpuobj->im_bound = 1;
return 0;
}
int
nv50_instmem_unbind(struct drm_device *dev, struct nouveau_gpuobj *gpuobj)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nv50_instmem_priv *priv = dev_priv->engine.instmem.priv;
uint32_t pte, pte_end;
if (gpuobj->im_bound == 0)
return -EINVAL;
pte = (gpuobj->im_pramin->start >> 12) << 1;
pte_end = ((gpuobj->im_pramin->size >> 12) << 1) + pte;
dev_priv->engine.instmem.prepare_access(dev, true);
while (pte < pte_end) {
nv_wo32(dev, priv->pramin_pt->gpuobj, pte++, 0x00000000);
nv_wo32(dev, priv->pramin_pt->gpuobj, pte++, 0x00000000);
}
dev_priv->engine.instmem.finish_access(dev);
gpuobj->im_bound = 0;
return 0;
}
void
nv50_instmem_prepare_access(struct drm_device *dev, bool write)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nv50_instmem_priv *priv = dev_priv->engine.instmem.priv;
priv->last_access_wr = write;
}
void
nv50_instmem_finish_access(struct drm_device *dev)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nv50_instmem_priv *priv = dev_priv->engine.instmem.priv;
if (priv->last_access_wr) {
nv_wr32(dev, 0x070000, 0x00000001);
if (!nv_wait(0x070000, 0x00000001, 0x00000000))
NV_ERROR(dev, "PRAMIN flush timeout\n");
}
}
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