57 lines
1.9 KiB
C
57 lines
1.9 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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#include "ram.h"
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int
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nv1a_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram)
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{
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struct pci_dev *bridge;
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u32 mem, mib;
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int domain = 0;
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struct pci_dev *pdev = NULL;
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if (dev_is_pci(fb->subdev.device->dev))
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pdev = to_pci_dev(fb->subdev.device->dev);
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if (pdev)
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domain = pci_domain_nr(pdev->bus);
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bridge = pci_get_domain_bus_and_slot(domain, 0, PCI_DEVFN(0, 1));
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if (!bridge) {
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nvkm_error(&fb->subdev, "no bridge device\n");
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return -ENODEV;
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}
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if (fb->subdev.device->chipset == 0x1a) {
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pci_read_config_dword(bridge, 0x7c, &mem);
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mib = ((mem >> 6) & 31) + 1;
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} else {
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pci_read_config_dword(bridge, 0x84, &mem);
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mib = ((mem >> 4) & 127) + 1;
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}
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return nvkm_ram_new_(&nv04_ram_func, fb, NVKM_RAM_TYPE_STOLEN,
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mib * 1024 * 1024, pram);
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}
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