/*
* Copyright 2015 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 <[email protected]>
*/
#define nvkm_vram(p) container_of((p), struct nvkm_vram, memory)
#include "ram.h"
#include <core/memory.h>
#include <subdev/instmem.h>
#include <subdev/mmu.h>
struct nvkm_vram {
struct nvkm_memory memory;
struct nvkm_ram *ram;
u8 page;
struct nvkm_mm_node *mn;
};
static int
nvkm_vram_kmap(struct nvkm_memory *memory, struct nvkm_memory **pmemory)
{
return nvkm_instobj_wrap(nvkm_vram(memory)->ram->fb->subdev.device, memory, pmemory);
}
static int
nvkm_vram_map(struct nvkm_memory *memory, u64 offset, struct nvkm_vmm *vmm,
struct nvkm_vma *vma, void *argv, u32 argc)
{
struct nvkm_vram *vram = nvkm_vram(memory);
struct nvkm_vmm_map map = {
.memory = &vram->memory,
.offset = offset,
.mem = vram->mn,
};
return nvkm_vmm_map(vmm, vma, argv, argc, &map);
}
static u64
nvkm_vram_size(struct nvkm_memory *memory)
{
return (u64)nvkm_mm_size(nvkm_vram(memory)->mn) << NVKM_RAM_MM_SHIFT;
}
static u64
nvkm_vram_addr(struct nvkm_memory *memory)
{
struct nvkm_vram *vram = nvkm_vram(memory);
if (!nvkm_mm_contiguous(vram->mn))
return ~0ULL;
return (u64)nvkm_mm_addr(vram->mn) << NVKM_RAM_MM_SHIFT;
}
static u8
nvkm_vram_page(struct nvkm_memory *memory)
{
return nvkm_vram(memory)->page;
}
static enum nvkm_memory_target
nvkm_vram_target(struct nvkm_memory *memory)
{
return NVKM_MEM_TARGET_VRAM;
}
static void *
nvkm_vram_dtor(struct nvkm_memory *memory)
{
struct nvkm_vram *vram = nvkm_vram(memory);
struct nvkm_mm_node *next = vram->mn;
struct nvkm_mm_node *node;
if (next) {
if (likely(next->nl_entry.next)){
mutex_lock(&vram->ram->mutex);
while ((node = next)) {
next = node->next;
nvkm_mm_free(&vram->ram->vram, &node);
}
mutex_unlock(&vram->ram->mutex);
} else {
kfree(vram->mn);
}
}
return vram;
}
static const struct nvkm_memory_func
nvkm_vram = {
.dtor = nvkm_vram_dtor,
.target = nvkm_vram_target,
.page = nvkm_vram_page,
.addr = nvkm_vram_addr,
.size = nvkm_vram_size,
.map = nvkm_vram_map,
.kmap = nvkm_vram_kmap,
};
int
nvkm_ram_wrap(struct nvkm_device *device, u64 addr, u64 size,
struct nvkm_memory **pmemory)
{
struct nvkm_ram *ram;
struct nvkm_vram *vram;
if (!device->fb || !(ram = device->fb->ram))
return -ENODEV;
ram = device->fb->ram;
if (!(vram = kzalloc(sizeof(*vram), GFP_KERNEL)))
return -ENOMEM;
nvkm_memory_ctor(&nvkm_vram, &vram->memory);
vram->ram = ram;
vram->page = NVKM_RAM_MM_SHIFT;
*pmemory = &vram->memory;
vram->mn = kzalloc(sizeof(*vram->mn), GFP_KERNEL);
if (!vram->mn)
return -ENOMEM;
vram->mn->offset = addr >> NVKM_RAM_MM_SHIFT;
vram->mn->length = size >> NVKM_RAM_MM_SHIFT;
return 0;
}
int
nvkm_ram_get(struct nvkm_device *device, u8 heap, u8 type, u8 rpage, u64 size,
bool contig, bool back, struct nvkm_memory **pmemory)
{
struct nvkm_ram *ram;
struct nvkm_mm *mm;
struct nvkm_mm_node **node, *r;
struct nvkm_vram *vram;
u8 page = max(rpage, (u8)NVKM_RAM_MM_SHIFT);
u32 align = (1 << page) >> NVKM_RAM_MM_SHIFT;
u32 max = ALIGN(size, 1 << page) >> NVKM_RAM_MM_SHIFT;
u32 min = contig ? max : align;
int ret;
if (!device->fb || !(ram = device->fb->ram))
return -ENODEV;
ram = device->fb->ram;
mm = &ram->vram;
if (!(vram = kzalloc(sizeof(*vram), GFP_KERNEL)))
return -ENOMEM;
nvkm_memory_ctor(&nvkm_vram, &vram->memory);
vram->ram = ram;
vram->page = page;
*pmemory = &vram->memory;
mutex_lock(&ram->mutex);
node = &vram->mn;
do {
if (back)
ret = nvkm_mm_tail(mm, heap, type, max, min, align, &r);
else
ret = nvkm_mm_head(mm, heap, type, max, min, align, &r);
if (ret) {
mutex_unlock(&ram->mutex);
nvkm_memory_unref(pmemory);
return ret;
}
*node = r;
node = &r->next;
max -= r->length;
} while (max);
mutex_unlock(&ram->mutex);
return 0;
}
int
nvkm_ram_init(struct nvkm_ram *ram)
{
if (ram->func->init)
return ram->func->init(ram);
return 0;
}
void
nvkm_ram_del(struct nvkm_ram **pram)
{
struct nvkm_ram *ram = *pram;
if (ram && !WARN_ON(!ram->func)) {
if (ram->func->dtor)
*pram = ram->func->dtor(ram);
nvkm_mm_fini(&ram->vram);
mutex_destroy(&ram->mutex);
kfree(*pram);
*pram = NULL;
}
}
int
nvkm_ram_ctor(const struct nvkm_ram_func *func, struct nvkm_fb *fb,
enum nvkm_ram_type type, u64 size, struct nvkm_ram *ram)
{
static const char *name[] = {
[NVKM_RAM_TYPE_UNKNOWN] = "of unknown memory type",
[NVKM_RAM_TYPE_STOLEN ] = "stolen system memory",
[NVKM_RAM_TYPE_SGRAM ] = "SGRAM",
[NVKM_RAM_TYPE_SDRAM ] = "SDRAM",
[NVKM_RAM_TYPE_DDR1 ] = "DDR1",
[NVKM_RAM_TYPE_DDR2 ] = "DDR2",
[NVKM_RAM_TYPE_DDR3 ] = "DDR3",
[NVKM_RAM_TYPE_GDDR2 ] = "GDDR2",
[NVKM_RAM_TYPE_GDDR3 ] = "GDDR3",
[NVKM_RAM_TYPE_GDDR4 ] = "GDDR4",
[NVKM_RAM_TYPE_GDDR5 ] = "GDDR5",
[NVKM_RAM_TYPE_GDDR5X ] = "GDDR5X",
[NVKM_RAM_TYPE_GDDR6 ] = "GDDR6",
[NVKM_RAM_TYPE_HBM2 ] = "HBM2",
};
struct nvkm_subdev *subdev = &fb->subdev;
int ret;
nvkm_info(subdev, "%d MiB %s\n", (int)(size >> 20), name[type]);
ram->func = func;
ram->fb = fb;
ram->type = type;
ram->size = size;
mutex_init(&ram->mutex);
if (!nvkm_mm_initialised(&ram->vram)) {
ret = nvkm_mm_init(&ram->vram, NVKM_RAM_MM_NORMAL, 0,
size >> NVKM_RAM_MM_SHIFT, 1);
if (ret)
return ret;
}
return 0;
}
int
nvkm_ram_new_(const struct nvkm_ram_func *func, struct nvkm_fb *fb,
enum nvkm_ram_type type, u64 size, struct nvkm_ram **pram)
{
if (!(*pram = kzalloc(sizeof(**pram), GFP_KERNEL)))
return -ENOMEM;
return nvkm_ram_ctor(func, fb, type, size, *pram);
}
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