| 1 | /* $NetBSD: nouveau_subdev_fb_ramnv1a.c,v 1.1.1.1 2014/08/06 12:36:30 riastradh Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright 2013 Red Hat Inc. |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 7 | * copy of this software and associated documentation files (the "Software"), |
| 8 | * to deal in the Software without restriction, including without limitation |
| 9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 10 | * and/or sell copies of the Software, and to permit persons to whom the |
| 11 | * Software is furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 22 | * OTHER DEALINGS IN THE SOFTWARE. |
| 23 | * |
| 24 | * Authors: Ben Skeggs |
| 25 | */ |
| 26 | |
| 27 | #include <sys/cdefs.h> |
| 28 | __KERNEL_RCSID(0, "$NetBSD: nouveau_subdev_fb_ramnv1a.c,v 1.1.1.1 2014/08/06 12:36:30 riastradh Exp $" ); |
| 29 | |
| 30 | #include "priv.h" |
| 31 | |
| 32 | static int |
| 33 | nv1a_ram_create(struct nouveau_object *parent, struct nouveau_object *engine, |
| 34 | struct nouveau_oclass *oclass, void *data, u32 size, |
| 35 | struct nouveau_object **pobject) |
| 36 | { |
| 37 | struct nouveau_fb *pfb = nouveau_fb(parent); |
| 38 | struct nouveau_ram *ram; |
| 39 | struct pci_dev *bridge; |
| 40 | u32 mem, mib; |
| 41 | int ret; |
| 42 | |
| 43 | bridge = pci_get_bus_and_slot(0, PCI_DEVFN(0, 1)); |
| 44 | if (!bridge) { |
| 45 | nv_fatal(pfb, "no bridge device\n" ); |
| 46 | return -ENODEV; |
| 47 | } |
| 48 | |
| 49 | ret = nouveau_ram_create(parent, engine, oclass, &ram); |
| 50 | *pobject = nv_object(ram); |
| 51 | if (ret) |
| 52 | return ret; |
| 53 | |
| 54 | if (nv_device(pfb)->chipset == 0x1a) { |
| 55 | pci_read_config_dword(bridge, 0x7c, &mem); |
| 56 | mib = ((mem >> 6) & 31) + 1; |
| 57 | } else { |
| 58 | pci_read_config_dword(bridge, 0x84, &mem); |
| 59 | mib = ((mem >> 4) & 127) + 1; |
| 60 | } |
| 61 | |
| 62 | ram->type = NV_MEM_TYPE_STOLEN; |
| 63 | ram->size = mib * 1024 * 1024; |
| 64 | return 0; |
| 65 | } |
| 66 | |
| 67 | struct nouveau_oclass |
| 68 | nv1a_ram_oclass = { |
| 69 | .handle = 0, |
| 70 | .ofuncs = &(struct nouveau_ofuncs) { |
| 71 | .ctor = nv1a_ram_create, |
| 72 | .dtor = _nouveau_ram_dtor, |
| 73 | .init = _nouveau_ram_init, |
| 74 | .fini = _nouveau_ram_fini, |
| 75 | } |
| 76 | }; |
| 77 | |