87 lines
2.9 KiB
C
87 lines
2.9 KiB
C
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/*
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* Copyright 2013 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Ben Skeggs
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*/
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#define mcp77_ram(p) container_of((p), struct mcp77_ram, base)
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#include "ram.h"
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struct mcp77_ram {
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struct nvkm_ram base;
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u64 poller_base;
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};
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static int
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mcp77_ram_init(struct nvkm_ram *base)
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{
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struct mcp77_ram *ram = mcp77_ram(base);
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struct nvkm_device *device = ram->base.fb->subdev.device;
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u32 dniso = ((ram->base.size - (ram->poller_base + 0x00)) >> 5) - 1;
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u32 hostnb = ((ram->base.size - (ram->poller_base + 0x20)) >> 5) - 1;
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u32 flush = ((ram->base.size - (ram->poller_base + 0x40)) >> 5) - 1;
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/* Enable NISO poller for various clients and set their associated
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* read address, only for MCP77/78 and MCP79/7A. (fd#27501)
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*/
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nvkm_wr32(device, 0x100c18, dniso);
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nvkm_mask(device, 0x100c14, 0x00000000, 0x00000001);
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nvkm_wr32(device, 0x100c1c, hostnb);
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nvkm_mask(device, 0x100c14, 0x00000000, 0x00000002);
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nvkm_wr32(device, 0x100c24, flush);
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nvkm_mask(device, 0x100c14, 0x00000000, 0x00010000);
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return 0;
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}
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static const struct nvkm_ram_func
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mcp77_ram_func = {
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.init = mcp77_ram_init,
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};
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int
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mcp77_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram)
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{
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struct nvkm_device *device = fb->subdev.device;
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u32 rsvd_head = ( 256 * 1024); /* vga memory */
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u32 rsvd_tail = (1024 * 1024) + 0x1000; /* vbios etc + poller mem */
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u64 base = (u64)nvkm_rd32(device, 0x100e10) << 12;
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u64 size = (u64)nvkm_rd32(device, 0x100e14) << 12;
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struct mcp77_ram *ram;
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int ret;
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if (!(ram = kzalloc(sizeof(*ram), GFP_KERNEL)))
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return -ENOMEM;
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*pram = &ram->base;
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ret = nvkm_ram_ctor(&mcp77_ram_func, fb, NVKM_RAM_TYPE_STOLEN,
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size, &ram->base);
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if (ret)
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return ret;
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ram->poller_base = size - rsvd_tail;
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ram->base.stolen = base;
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nvkm_mm_fini(&ram->base.vram);
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return nvkm_mm_init(&ram->base.vram, NVKM_RAM_MM_NORMAL,
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rsvd_head >> NVKM_RAM_MM_SHIFT,
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(size - rsvd_head - rsvd_tail) >>
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NVKM_RAM_MM_SHIFT, 1);
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}
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