ebf7655aeb
The 100c10 scratch page is mapped using dma_map_page() before the TTM layer has had a chance to set the DMA mask. This means we are still running with the default of 32 when this code executes, and this causes problems for platforms with no memory below 4 GB (such as AMD Seattle) So move the dma_map_page() to the .oneinit hook, which executes after the DMA mask has been set. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
154 lines
4.0 KiB
C
154 lines
4.0 KiB
C
/*
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* Copyright 2012 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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#include "gf100.h"
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#include "ram.h"
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#include <core/memory.h>
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#include <core/option.h>
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extern const u8 gf100_pte_storage_type_map[256];
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bool
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gf100_fb_memtype_valid(struct nvkm_fb *fb, u32 tile_flags)
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{
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u8 memtype = (tile_flags & 0x0000ff00) >> 8;
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return likely((gf100_pte_storage_type_map[memtype] != 0xff));
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}
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void
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gf100_fb_intr(struct nvkm_fb *base)
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{
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struct gf100_fb *fb = gf100_fb(base);
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struct nvkm_subdev *subdev = &fb->base.subdev;
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struct nvkm_device *device = subdev->device;
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u32 intr = nvkm_rd32(device, 0x000100);
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if (intr & 0x08000000)
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nvkm_debug(subdev, "PFFB intr\n");
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if (intr & 0x00002000)
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nvkm_debug(subdev, "PBFB intr\n");
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}
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int
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gf100_fb_oneinit(struct nvkm_fb *base)
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{
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struct gf100_fb *fb = gf100_fb(base);
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struct nvkm_device *device = fb->base.subdev.device;
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int ret, size = 0x1000;
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size = nvkm_longopt(device->cfgopt, "MmuDebugBufferSize", size);
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size = min(size, 0x1000);
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ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, size, 0x1000,
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false, &fb->base.mmu_rd);
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if (ret)
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return ret;
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ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, size, 0x1000,
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false, &fb->base.mmu_wr);
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if (ret)
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return ret;
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fb->r100c10_page = alloc_page(GFP_KERNEL | __GFP_ZERO);
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if (fb->r100c10_page) {
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fb->r100c10 = dma_map_page(device->dev, fb->r100c10_page, 0,
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PAGE_SIZE, DMA_BIDIRECTIONAL);
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if (dma_mapping_error(device->dev, fb->r100c10))
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return -EFAULT;
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}
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return 0;
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}
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void
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gf100_fb_init_page(struct nvkm_fb *fb)
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{
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struct nvkm_device *device = fb->subdev.device;
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switch (fb->page) {
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case 16:
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nvkm_mask(device, 0x100c80, 0x00000001, 0x00000001);
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break;
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case 17:
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default:
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nvkm_mask(device, 0x100c80, 0x00000001, 0x00000000);
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fb->page = 17;
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break;
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}
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}
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void
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gf100_fb_init(struct nvkm_fb *base)
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{
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struct gf100_fb *fb = gf100_fb(base);
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struct nvkm_device *device = fb->base.subdev.device;
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if (fb->r100c10_page)
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nvkm_wr32(device, 0x100c10, fb->r100c10 >> 8);
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}
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void *
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gf100_fb_dtor(struct nvkm_fb *base)
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{
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struct gf100_fb *fb = gf100_fb(base);
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struct nvkm_device *device = fb->base.subdev.device;
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if (fb->r100c10_page) {
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dma_unmap_page(device->dev, fb->r100c10, PAGE_SIZE,
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DMA_BIDIRECTIONAL);
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__free_page(fb->r100c10_page);
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}
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return fb;
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}
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int
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gf100_fb_new_(const struct nvkm_fb_func *func, struct nvkm_device *device,
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int index, struct nvkm_fb **pfb)
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{
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struct gf100_fb *fb;
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if (!(fb = kzalloc(sizeof(*fb), GFP_KERNEL)))
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return -ENOMEM;
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nvkm_fb_ctor(func, device, index, &fb->base);
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*pfb = &fb->base;
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return 0;
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}
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static const struct nvkm_fb_func
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gf100_fb = {
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.dtor = gf100_fb_dtor,
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.oneinit = gf100_fb_oneinit,
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.init = gf100_fb_init,
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.init_page = gf100_fb_init_page,
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.intr = gf100_fb_intr,
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.ram_new = gf100_ram_new,
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.memtype_valid = gf100_fb_memtype_valid,
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};
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int
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gf100_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb)
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{
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return gf100_fb_new_(&gf100_fb, device, index, pfb);
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}
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