/* * 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. *
*/ #include"priv.h"
/* PRAMIN always potentially available prior to nv50 */ if (device->card_type < NV_50) return NULL;
/* we can't get the bios image pointer without PDISP */ if (device->card_type >= GA100)
addr = device->chipset == 0x170; /*XXX: find the fuse reg for this */ else if (device->card_type >= GM100)
addr = nvkm_rd32(device, 0x021c04); else if (device->card_type >= NV_C0)
addr = nvkm_rd32(device, 0x022500); if (addr & 0x00000001) {
nvkm_debug(subdev, "... display disabled\n"); return ERR_PTR(-ENODEV);
}
/* check that the window is enabled and in vram, particularly * important as we don't want to be touching vram on an * uninitialised board
*/ if (device->card_type >= GV100)
addr = nvkm_rd32(device, 0x625f04); else
addr = nvkm_rd32(device, 0x619f04); if (!(addr & 0x00000008)) {
nvkm_debug(subdev, "... not enabled\n"); return ERR_PTR(-ENODEV);
} if ( (addr & 0x00000003) != 1) {
nvkm_debug(subdev, "... not in vram\n"); return ERR_PTR(-ENODEV);
}
/* some alternate method inherited from xf86-video-nv... */
addr = (addr & 0xffffff00) << 8; if (!addr) {
addr = (u64)nvkm_rd32(device, 0x001700) << 16;
addr += 0xf0000;
}
/* modify bar0 PRAMIN window to cover the bios image */ if (!(priv = kmalloc(sizeof(*priv), GFP_KERNEL))) {
nvkm_error(subdev, "... out of memory\n"); return ERR_PTR(-ENOMEM);
}
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