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/*
* Copyright 2013 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 mcp77_ram(p) container_of((p), struct mcp77_ram, base)
#include "ram.h"
struct mcp77_ram {
struct nvkm_ram base;
u64 poller_base;
};
static int
mcp77_ram_init(struct nvkm_ram *base)
{
struct mcp77_ram *ram = mcp77_ram(base);
struct nvkm_device *device = ram->base.fb->subdev.device;
u32 dniso = ((ram->base.size - (ram->poller_base + 0x00)) >> 5) - 1;
u32 hostnb = ((ram->base.size - (ram->poller_base + 0x20)) >> 5) - 1;
u32 flush = ((ram->base.size - (ram->poller_base + 0x40)) >> 5) - 1;
/* Enable NISO poller for various clients and set their associated
* read address, only for MCP77/78 and MCP79/7A. (fd#27501)
*/
nvkm_wr32(device, 0x100c18, dniso);
nvkm_mask(device, 0x100c14, 0x00000000, 0x00000001);
nvkm_wr32(device, 0x100c1c, hostnb);
nvkm_mask(device, 0x100c14, 0x00000000, 0x00000002);
nvkm_wr32(device, 0x100c24, flush);
nvkm_mask(device, 0x100c14, 0x00000000, 0x00010000);
return 0;
}
static const struct nvkm_ram_func
mcp77_ram_func = {
.init = mcp77_ram_init,
};
int
mcp77_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram)
{
struct nvkm_device *device = fb->subdev.device;
u32 rsvd_head = ( 256 * 1024); /* vga memory */
u32 rsvd_tail = (1024 * 1024) + 0x1000; /* vbios etc + poller mem */
u64 base = (u64)nvkm_rd32(device, 0x100e10) << 12;
u64 size = (u64)nvkm_rd32(device, 0x100e14) << 12;
struct mcp77_ram *ram;
int ret;
if (!(ram = kzalloc(sizeof(*ram), GFP_KERNEL)))
return -ENOMEM;
*pram = &ram->base;
ret = nvkm_ram_ctor(&mcp77_ram_func, fb, NVKM_RAM_TYPE_STOLEN,
size, &ram->base);
if (ret)
return ret;
ram->poller_base = size - rsvd_tail;
ram->base.stolen = base;
nvkm_mm_fini(&ram->base.vram);
return nvkm_mm_init(&ram->base.vram, NVKM_RAM_MM_NORMAL,
rsvd_head >> NVKM_RAM_MM_SHIFT,
(size - rsvd_head - rsvd_tail) >>
NVKM_RAM_MM_SHIFT, 1);
}
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