diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/pci/gf100.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/pci/gf100.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/gf100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/gf100.c new file mode 100644 index 000000000..099906092 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/gf100.c @@ -0,0 +1,103 @@ +/* + * Copyright 2015 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. + * + * Authors: Ben Skeggs <bskeggs@redhat.com> + */ +#include "priv.h" + +static void +gf100_pci_msi_rearm(struct nvkm_pci *pci) +{ + nvkm_pci_wr08(pci, 0x0704, 0xff); +} + +void +gf100_pcie_set_version(struct nvkm_pci *pci, u8 ver) +{ + struct nvkm_device *device = pci->subdev.device; + nvkm_mask(device, 0x02241c, 0x1, ver > 1 ? 1 : 0); +} + +int +gf100_pcie_version(struct nvkm_pci *pci) +{ + struct nvkm_device *device = pci->subdev.device; + return (nvkm_rd32(device, 0x02241c) & 0x1) + 1; +} + +void +gf100_pcie_set_cap_speed(struct nvkm_pci *pci, bool full_speed) +{ + struct nvkm_device *device = pci->subdev.device; + nvkm_mask(device, 0x02241c, 0x80, full_speed ? 0x80 : 0x0); +} + +int +gf100_pcie_cap_speed(struct nvkm_pci *pci) +{ + struct nvkm_device *device = pci->subdev.device; + u8 punits_pci_cap_speed = nvkm_rd32(device, 0x02241c) & 0x80; + if (punits_pci_cap_speed == 0x80) + return 1; + return 0; +} + +int +gf100_pcie_init(struct nvkm_pci *pci) +{ + bool full_speed = g84_pcie_cur_speed(pci) == NVKM_PCIE_SPEED_5_0; + gf100_pcie_set_cap_speed(pci, full_speed); + return 0; +} + +int +gf100_pcie_set_link(struct nvkm_pci *pci, enum nvkm_pcie_speed speed, u8 width) +{ + gf100_pcie_set_cap_speed(pci, speed == NVKM_PCIE_SPEED_5_0); + g84_pcie_set_link_speed(pci, speed); + return 0; +} + +static const struct nvkm_pci_func +gf100_pci_func = { + .init = g84_pci_init, + .rd32 = nv40_pci_rd32, + .wr08 = nv40_pci_wr08, + .wr32 = nv40_pci_wr32, + .msi_rearm = gf100_pci_msi_rearm, + + .pcie.init = gf100_pcie_init, + .pcie.set_link = gf100_pcie_set_link, + + .pcie.max_speed = g84_pcie_max_speed, + .pcie.cur_speed = g84_pcie_cur_speed, + + .pcie.set_version = gf100_pcie_set_version, + .pcie.version = gf100_pcie_version, + .pcie.version_supported = g92_pcie_version_supported, +}; + +int +gf100_pci_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, + struct nvkm_pci **ppci) +{ + return nvkm_pci_new_(&gf100_pci_func, device, type, inst, ppci); +} |