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/*
* 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
*/
#include "gf100.h"
#include <core/memory.h>
#include <core/option.h>
#include <subdev/fb.h>
#include <subdev/mmu.h>
struct nvkm_vmm *
gf100_bar_bar1_vmm(struct nvkm_bar *base)
{
return gf100_bar(base)->bar[1].vmm;
}
void
gf100_bar_bar1_wait(struct nvkm_bar *base)
{
/* NFI why it's twice. */
nvkm_bar_flush(base);
nvkm_bar_flush(base);
}
void
gf100_bar_bar1_fini(struct nvkm_bar *bar)
{
nvkm_mask(bar->subdev.device, 0x001704, 0x80000000, 0x00000000);
}
void
gf100_bar_bar1_init(struct nvkm_bar *base)
{
struct nvkm_device *device = base->subdev.device;
struct gf100_bar *bar = gf100_bar(base);
const u32 addr = nvkm_memory_addr(bar->bar[1].inst) >> 12;
nvkm_wr32(device, 0x001704, 0x80000000 | addr);
}
struct nvkm_vmm *
gf100_bar_bar2_vmm(struct nvkm_bar *base)
{
return gf100_bar(base)->bar[0].vmm;
}
void
gf100_bar_bar2_fini(struct nvkm_bar *bar)
{
nvkm_mask(bar->subdev.device, 0x001714, 0x80000000, 0x00000000);
}
void
gf100_bar_bar2_init(struct nvkm_bar *base)
{
struct nvkm_device *device = base->subdev.device;
struct gf100_bar *bar = gf100_bar(base);
u32 addr = nvkm_memory_addr(bar->bar[0].inst) >> 12;
if (bar->bar2_halve)
addr |= 0x40000000;
nvkm_wr32(device, 0x001714, 0x80000000 | addr);
}
static int
gf100_bar_oneinit_bar(struct gf100_bar *bar, struct gf100_barN *bar_vm,
struct lock_class_key *key, int bar_nr)
{
struct nvkm_device *device = bar->base.subdev.device;
resource_size_t bar_len;
int ret;
ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, 0x1000, 0, false,
&bar_vm->inst);
if (ret)
return ret;
bar_len = device->func->resource_size(device, bar_nr);
if (!bar_len)
return -ENOMEM;
if (bar_nr == 3 && bar->bar2_halve)
bar_len >>= 1;
ret = nvkm_vmm_new(device, 0, bar_len, NULL, 0, key,
(bar_nr == 3) ? "bar2" : "bar1", &bar_vm->vmm);
if (ret)
return ret;
atomic_inc(&bar_vm->vmm->engref[NVKM_SUBDEV_BAR]);
bar_vm->vmm->debug = bar->base.subdev.debug;
/*
* Bootstrap page table lookup.
*/
if (bar_nr == 3) {
ret = nvkm_vmm_boot(bar_vm->vmm);
if (ret)
return ret;
}
return nvkm_vmm_join(bar_vm->vmm, bar_vm->inst);
}
int
gf100_bar_oneinit(struct nvkm_bar *base)
{
static struct lock_class_key bar1_lock;
static struct lock_class_key bar2_lock;
struct gf100_bar *bar = gf100_bar(base);
int ret;
/* BAR2 */
if (bar->base.func->bar2.init) {
ret = gf100_bar_oneinit_bar(bar, &bar->bar[0], &bar2_lock, 3);
if (ret)
return ret;
bar->base.subdev.oneinit = true;
nvkm_bar_bar2_init(bar->base.subdev.device);
}
/* BAR1 */
ret = gf100_bar_oneinit_bar(bar, &bar->bar[1], &bar1_lock, 1);
if (ret)
return ret;
return 0;
}
void *
gf100_bar_dtor(struct nvkm_bar *base)
{
struct gf100_bar *bar = gf100_bar(base);
nvkm_vmm_part(bar->bar[1].vmm, bar->bar[1].inst);
nvkm_vmm_unref(&bar->bar[1].vmm);
nvkm_memory_unref(&bar->bar[1].inst);
nvkm_vmm_part(bar->bar[0].vmm, bar->bar[0].inst);
nvkm_vmm_unref(&bar->bar[0].vmm);
nvkm_memory_unref(&bar->bar[0].inst);
return bar;
}
int
gf100_bar_new_(const struct nvkm_bar_func *func, struct nvkm_device *device,
enum nvkm_subdev_type type, int inst, struct nvkm_bar **pbar)
{
struct gf100_bar *bar;
if (!(bar = kzalloc(sizeof(*bar), GFP_KERNEL)))
return -ENOMEM;
nvkm_bar_ctor(func, device, type, inst, &bar->base);
bar->bar2_halve = nvkm_boolopt(device->cfgopt, "NvBar2Halve", false);
*pbar = &bar->base;
return 0;
}
static const struct nvkm_bar_func
gf100_bar_func = {
.dtor = gf100_bar_dtor,
.oneinit = gf100_bar_oneinit,
.bar1.init = gf100_bar_bar1_init,
.bar1.fini = gf100_bar_bar1_fini,
.bar1.wait = gf100_bar_bar1_wait,
.bar1.vmm = gf100_bar_bar1_vmm,
.bar2.init = gf100_bar_bar2_init,
.bar2.fini = gf100_bar_bar2_fini,
.bar2.wait = gf100_bar_bar1_wait,
.bar2.vmm = gf100_bar_bar2_vmm,
.flush = g84_bar_flush,
};
int
gf100_bar_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
struct nvkm_bar **pbar)
{
return gf100_bar_new_(&gf100_bar_func, device, type, inst, pbar);
}
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