/*
* Copyright 2012 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
*/
#define nv40_instmem(p) container_of((p), struct nv40_instmem, base)
#include "priv.h"
#include <core/ramht.h>
#include <engine/gr/nv40.h>
struct nv40_instmem {
struct nvkm_instmem base;
struct nvkm_mm heap;
void __iomem *iomem;
};
/******************************************************************************
* instmem object implementation
*****************************************************************************/
#define nv40_instobj(p) container_of((p), struct nv40_instobj, base.memory)
struct nv40_instobj {
struct nvkm_instobj base;
struct nv40_instmem *imem;
struct nvkm_mm_node *node;
};
static void
nv40_instobj_wr32(struct nvkm_memory *memory, u64 offset, u32 data)
{
struct nv40_instobj *iobj = nv40_instobj(memory);
iowrite32_native(data, iobj->imem->iomem + iobj->node->offset + offset);
}
static u32
nv40_instobj_rd32(struct nvkm_memory *memory, u64 offset)
{
struct nv40_instobj *iobj = nv40_instobj(memory);
return ioread32_native(iobj->imem->iomem + iobj->node->offset + offset);
}
static const struct nvkm_memory_ptrs
nv40_instobj_ptrs = {
.rd32 = nv40_instobj_rd32,
.wr32 = nv40_instobj_wr32,
};
static void
nv40_instobj_release(struct nvkm_memory *memory)
{
wmb();
}
static void __iomem *
nv40_instobj_acquire(struct nvkm_memory *memory)
{
struct nv40_instobj *iobj = nv40_instobj(memory);
return iobj->imem->iomem + iobj->node->offset;
}
static u64
nv40_instobj_size(struct nvkm_memory *memory)
{
return nv40_instobj(memory)->node->length;
}
static u64
nv40_instobj_addr(struct nvkm_memory *memory)
{
return nv40_instobj(memory)->node->offset;
}
static enum nvkm_memory_target
nv40_instobj_target(struct nvkm_memory *memory)
{
return NVKM_MEM_TARGET_INST;
}
static void *
nv40_instobj_dtor(struct nvkm_memory *memory)
{
struct nv40_instobj *iobj = nv40_instobj(memory);
mutex_lock(&iobj->imem->base.mutex);
nvkm_mm_free(&iobj->imem->heap, &iobj->node);
mutex_unlock(&iobj->imem->base.mutex);
nvkm_instobj_dtor(&iobj->imem->base, &iobj->base);
return iobj;
}
static const struct nvkm_memory_func
nv40_instobj_func = {
.dtor = nv40_instobj_dtor,
.target = nv40_instobj_target,
.size = nv40_instobj_size,
.addr = nv40_instobj_addr,
.acquire = nv40_instobj_acquire,
.release = nv40_instobj_release,
};
static int
nv40_instobj_new(struct nvkm_instmem *base, u32 size, u32 align, bool zero,
struct nvkm_memory **pmemory)
{
struct nv40_instmem *imem = nv40_instmem(base);
struct nv40_instobj *iobj;
int ret;
if (!(iobj = kzalloc(sizeof (*iobj), GFP_KERNEL)))
return -ENOMEM;
*pmemory = &iobj->base.memory;
nvkm_instobj_ctor(&nv40_instobj_func, &imem->base, &iobj->base);
iobj->base.memory.ptrs = &nv40_instobj_ptrs;
iobj->imem = imem;
mutex_lock(&imem->base.mutex);
ret = nvkm_mm_head(&imem->heap, 0 , 1 , size, size, align ? align : 1 , &iobj->node);
mutex_unlock(&imem->base.mutex);
return ret;
}
/******************************************************************************
* instmem subdev implementation
*****************************************************************************/
static u32
nv40_instmem_rd32(struct nvkm_instmem *base, u32 addr)
{
return ioread32_native(nv40_instmem(base)->iomem + addr);
}
static void
nv40_instmem_wr32(struct nvkm_instmem *base, u32 addr, u32 data)
{
iowrite32_native(data, nv40_instmem(base)->iomem + addr);
}
static int
nv40_instmem_oneinit(struct nvkm_instmem *base)
{
struct nv40_instmem *imem = nv40_instmem(base);
struct nvkm_device *device = imem->base.subdev.device;
int ret, vs;
/* PRAMIN aperture maps over the end of vram, reserve enough space
* to fit graphics contexts for every channel , the magics come
* from engine / gr / nv40 . c
*/
vs = hweight8((nvkm_rd32(device, 0 x001540) & 0 x0000ff00) >> 8 );
if (device->chipset == 0 x40) imem->base.reserved = 0 x6aa0 * vs;
else if (device->chipset < 0 x43) imem->base.reserved = 0 x4f00 * vs;
else if (nv44_gr_class(device)) imem->base.reserved = 0 x4980 * vs;
else imem->base.reserved = 0 x4a40 * vs;
imem->base.reserved += 16 * 1024 ;
imem->base.reserved *= 32 ; /* per-channel */
imem->base.reserved += 512 * 1024 ; /* pci(e)gart table */
imem->base.reserved += 512 * 1024 ; /* object storage */
imem->base.reserved = round_up(imem->base.reserved, 4096 );
ret = nvkm_mm_init(&imem->heap, 0 , 0 , imem->base.reserved, 1 );
if (ret)
return ret;
/* 0x00000-0x10000: reserve for probable vbios image */
ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, 0 x10000, 0 , false ,
&imem->base.vbios);
if (ret)
return ret;
/* 0x10000-0x18000: reserve for RAMHT */
ret = nvkm_ramht_new(device, 0 x08000, 0 , NULL, &imem->base.ramht);
if (ret)
return ret;
/* 0x18000-0x18200: reserve for RAMRO
* 0 x18200 - 0 x20000 : padding
*/
ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, 0 x08000, 0 , false ,
&imem->base.ramro);
if (ret)
return ret;
/* 0x20000-0x21000: reserve for RAMFC
* 0 x21000 - 0 x40000 : padding and some unknown crap
*/
ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, 0 x20000, 0 , true ,
&imem->base.ramfc);
if (ret)
return ret;
return 0 ;
}
static void *
nv40_instmem_dtor(struct nvkm_instmem *base)
{
struct nv40_instmem *imem = nv40_instmem(base);
nvkm_memory_unref(&imem->base.ramfc);
nvkm_memory_unref(&imem->base.ramro);
nvkm_ramht_del(&imem->base.ramht);
nvkm_memory_unref(&imem->base.vbios);
nvkm_mm_fini(&imem->heap);
if (imem->iomem)
iounmap(imem->iomem);
return imem;
}
static const struct nvkm_instmem_func
nv40_instmem = {
.dtor = nv40_instmem_dtor,
.oneinit = nv40_instmem_oneinit,
.rd32 = nv40_instmem_rd32,
.wr32 = nv40_instmem_wr32,
.memory_new = nv40_instobj_new,
.zero = false ,
};
int
nv40_instmem_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
struct nvkm_instmem **pimem)
{
struct nv40_instmem *imem;
if (!(imem = kzalloc(sizeof (*imem), GFP_KERNEL)))
return -ENOMEM;
nvkm_instmem_ctor(&nv40_instmem, device, type, inst, &imem->base);
*pimem = &imem->base;
/* map bar */
imem->iomem = ioremap_wc(device->func->resource_addr(device, NVKM_BAR2_INST),
device->func->resource_size(device, NVKM_BAR2_INST));
if (!imem->iomem) {
nvkm_error(&imem->base.subdev, "unable to map PRAMIN BAR\n" );
return -EFAULT;
}
return 0 ;
}
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¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-10-06)
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