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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"
typedef struct {
uint32_t save1700[5]; /* 0x1700->0x1710 */
} nv50_instmem_priv;
#define NV50_INSTMEM_PAGE_SHIFT 12
#define NV50_INSTMEM_PAGE_SIZE (1 << NV50_INSTMEM_PAGE_SHIFT)
#define NV50_INSTMEM_RSVD_SIZE (64 * 1024)
#define NV50_INSTMEM_PT_SIZE(a) (((a) >> 12) << 3)
int
nv50_instmem_init(struct drm_device *dev)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
nv50_instmem_priv *priv;
uint32_t rv, pt, pts, cb, cb0, cb1, unk, as;
uint32_t i, v;
int ret;
priv = drm_calloc(1, sizeof(*priv), DRM_MEM_DRIVER);
if (!priv)
return -ENOMEM;
dev_priv->Engine.instmem.priv = priv;
/* Save current state */
for (i = 0x1700; i <= 0x1710; i+=4)
priv->save1700[(i-0x1700)/4] = NV_READ(i);
as = dev_priv->ramin->size;
rv = nouveau_mem_fb_amount(dev) - (1*1024*1024);
pt = rv + 0xd0000;
pts = NV50_INSTMEM_PT_SIZE(as);
cb = rv + 0xc8000;
if ((dev_priv->chipset & 0xf0) != 0x50) {
unk = cb + 0x4200;
cb0 = cb + 0x4240;
cb1 = cb + 0x278;
} else {
unk = cb + 0x5400;
cb0 = cb + 0x5440;
cb1 = cb + 0x1478;
}
DRM_DEBUG("PRAMIN config:\n");
DRM_DEBUG(" Rsvd VRAM base: 0x%08x\n", rv);
DRM_DEBUG(" Aperture size: %i MiB\n", as >> 20);
DRM_DEBUG(" PT base: 0x%08x\n", pt);
DRM_DEBUG(" PT size: %d KiB\n", pts >> 10);
DRM_DEBUG(" BIOS image: 0x%08x\n", (NV_READ(0x619f04)&~0xff)<<8);
DRM_DEBUG(" Config base: 0x%08x\n", cb);
DRM_DEBUG(" ctxdma Config0: 0x%08x\n", cb0);
DRM_DEBUG(" Config1: 0x%08x\n", cb1);
/* Map first MiB of reserved vram into BAR0 PRAMIN aperture */
NV_WRITE(0x1700, (rv>>16));
/* Poke some regs.. */
NV_WRITE(0x1704, (cb>>12));
NV_WRITE(0x1710, (((unk-cb)>>4))|(1<<31));
NV_WRITE(0x1704, (cb>>12)|(1<<30));
/* CB0, some DMA object, NFI what it points at... Needed however,
* or the PRAMIN aperture doesn't operate as expected.
*/
NV_WRITE(NV_RAMIN + (cb0 - rv) + 0x00, 0x7fc00000);
NV_WRITE(NV_RAMIN + (cb0 - rv) + 0x04, 0xe1ffffff);
NV_WRITE(NV_RAMIN + (cb0 - rv) + 0x08, 0xe0000000);
NV_WRITE(NV_RAMIN + (cb0 - rv) + 0x0c, 0x01000001);
NV_WRITE(NV_RAMIN + (cb0 - rv) + 0x10, 0x00000000);
NV_WRITE(NV_RAMIN + (cb0 - rv) + 0x14, 0x00000000);
/* CB1, points at PRAMIN PT */
NV_WRITE(NV_RAMIN + (cb1 - rv) + 0, pt | 0x63);
NV_WRITE(NV_RAMIN + (cb1 - rv) + 4, 0x00000000);
/* Zero PRAMIN page table */
v = NV_RAMIN + (pt - rv);
for (i = v; i < v + pts; i += 8) {
NV_WRITE(i + 0x00, 0x00000009);
NV_WRITE(i + 0x04, 0x00000000);
}
/* Map page table into PRAMIN aperture */
for (i = pt; i < pt + pts; i += 0x1000) {
uint32_t pte = NV_RAMIN + (pt-rv) + (((i-pt) >> 12) << 3);
DRM_DEBUG("PRAMIN PTE = 0x%08x @ 0x%08x\n", i, pte);
NV_WRITE(pte + 0x00, i | 1);
NV_WRITE(pte + 0x04, 0x00000000);
}
/* Points at CB0 */
NV_WRITE(0x170c, (((cb0 - cb)>>4)|(1<<31)));
/* Confirm it all worked, should be able to read back the page table's
* PTEs from the PRAMIN BAR
*/
NV_WRITE(0x1700, pt >> 16);
if (NV_READ(0x700000) != NV_RI32(0)) {
DRM_ERROR("Failed to init PRAMIN page table\n");
return -EINVAL;
}
/* Create a heap to manage PRAMIN aperture allocations */
ret = nouveau_mem_init_heap(&dev_priv->ramin_heap, pts, as-pts);
if (ret) {
DRM_ERROR("Failed to init PRAMIN heap\n");
return -ENOMEM;
}
DRM_DEBUG("NV50: PRAMIN setup ok\n");
/* Don't alloc the last MiB of VRAM, probably too much, but be safe
* at least for now.
*/
dev_priv->ramin_rsvd_vram = 1*1024*1024;
/*XXX: probably 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;
nv50_instmem_priv *priv = dev_priv->Engine.instmem.priv;
int i;
if (!priv)
return;
/* Restore state from before init */
for (i = 0x1700; i <= 0x1710; i+=4)
NV_WRITE(i, priv->save1700[(i-0x1700)/4]);
dev_priv->Engine.instmem.priv = NULL;
drm_free(priv, sizeof(*priv), DRM_MEM_DRIVER);
}
int
nv50_instmem_populate(struct drm_device *dev, struct nouveau_gpuobj *gpuobj, uint32_t *sz)
{
if (gpuobj->im_backing)
return -EINVAL;
*sz = (*sz + (NV50_INSTMEM_PAGE_SIZE-1)) & ~(NV50_INSTMEM_PAGE_SIZE-1);
if (*sz == 0)
return -EINVAL;
gpuobj->im_backing = nouveau_mem_alloc(dev, NV50_INSTMEM_PAGE_SIZE,
*sz, NOUVEAU_MEM_FB,
(struct drm_file *)-2);
if (!gpuobj->im_backing) {
DRM_ERROR("Couldn't allocate vram to back PRAMIN pages\n");
return -ENOMEM;
}
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_mem_free(dev, 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;
uint32_t pte, pte_end, vram;
if (!gpuobj->im_backing || !gpuobj->im_pramin || gpuobj->im_bound)
return -EINVAL;
DRM_DEBUG("st=0x%0llx sz=0x%0llx\n",
gpuobj->im_pramin->start, gpuobj->im_pramin->size);
pte = (gpuobj->im_pramin->start >> 12) << 3;
pte_end = ((gpuobj->im_pramin->size >> 12) << 3) + pte;
vram = gpuobj->im_backing->start;
if (pte == pte_end) {
DRM_ERROR("WARNING: badness in bind() pte calc\n");
pte_end++;
}
DRM_DEBUG("pramin=0x%llx, pte=%d, pte_end=%d\n",
gpuobj->im_pramin->start, pte, pte_end);
DRM_DEBUG("first vram page: 0x%llx\n",
gpuobj->im_backing->start);
while (pte < pte_end) {
NV_WI32(pte + 0, vram | 1);
NV_WI32(pte + 4, 0x00000000);
pte += 8;
vram += NV50_INSTMEM_PAGE_SIZE;
}
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;
uint32_t pte, pte_end;
if (gpuobj->im_bound == 0)
return -EINVAL;
pte = (gpuobj->im_pramin->start >> 12) << 3;
pte_end = ((gpuobj->im_pramin->size >> 12) << 3) + pte;
while (pte < pte_end) {
NV_WI32(pte + 0, 0x00000000);
NV_WI32(pte + 4, 0x00000000);
pte += 8;
}
gpuobj->im_bound = 0;
return 0;
}
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