From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- drivers/gpu/drm/nouveau/nvkm/subdev/pci/g84.c | 157 ++++++++++++++++++++++++++ 1 file changed, 157 insertions(+) create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/pci/g84.c (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/pci/g84.c') diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/g84.c b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/g84.c new file mode 100644 index 000000000..5b29aaced --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/g84.c @@ -0,0 +1,157 @@ +/* + * 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 + */ +#include "priv.h" + +#include + +static int +g84_pcie_version_supported(struct nvkm_pci *pci) +{ + /* g84 and g86 report wrong information about what they support */ + return 1; +} + +int +g84_pcie_version(struct nvkm_pci *pci) +{ + struct nvkm_device *device = pci->subdev.device; + return (nvkm_rd32(device, 0x00154c) & 0x1) + 1; +} + +void +g84_pcie_set_version(struct nvkm_pci *pci, u8 ver) +{ + struct nvkm_device *device = pci->subdev.device; + nvkm_mask(device, 0x00154c, 0x1, (ver >= 2 ? 0x1 : 0x0)); +} + +static void +g84_pcie_set_cap_speed(struct nvkm_pci *pci, bool full_speed) +{ + struct nvkm_device *device = pci->subdev.device; + nvkm_mask(device, 0x00154c, 0x80, full_speed ? 0x80 : 0x0); +} + +enum nvkm_pcie_speed +g84_pcie_cur_speed(struct nvkm_pci *pci) +{ + u32 reg_v = nvkm_pci_rd32(pci, 0x88) & 0x30000; + switch (reg_v) { + case 0x30000: + return NVKM_PCIE_SPEED_8_0; + case 0x20000: + return NVKM_PCIE_SPEED_5_0; + case 0x10000: + default: + return NVKM_PCIE_SPEED_2_5; + } +} + +enum nvkm_pcie_speed +g84_pcie_max_speed(struct nvkm_pci *pci) +{ + u32 reg_v = nvkm_pci_rd32(pci, 0x460) & 0x3300; + if (reg_v == 0x2200) + return NVKM_PCIE_SPEED_5_0; + return NVKM_PCIE_SPEED_2_5; +} + +void +g84_pcie_set_link_speed(struct nvkm_pci *pci, enum nvkm_pcie_speed speed) +{ + u32 mask_value; + + if (speed == NVKM_PCIE_SPEED_5_0) + mask_value = 0x20; + else + mask_value = 0x10; + + nvkm_pci_mask(pci, 0x460, 0x30, mask_value); + nvkm_pci_mask(pci, 0x460, 0x1, 0x1); +} + +int +g84_pcie_set_link(struct nvkm_pci *pci, enum nvkm_pcie_speed speed, u8 width) +{ + g84_pcie_set_cap_speed(pci, speed == NVKM_PCIE_SPEED_5_0); + g84_pcie_set_link_speed(pci, speed); + return 0; +} + +void +g84_pci_init(struct nvkm_pci *pci) +{ + /* The following only concerns PCIe cards. */ + if (!pci_is_pcie(pci->pdev)) + return; + + /* Tag field is 8-bit long, regardless of EXT_TAG. + * However, if EXT_TAG is disabled, only the lower 5 bits of the tag + * field should be used, limiting the number of request to 32. + * + * Apparently, 0x041c stores some limit on the number of requests + * possible, so if EXT_TAG is disabled, limit that requests number to + * 32 + * + * Fixes fdo#86537 + */ + if (nvkm_pci_rd32(pci, 0x007c) & 0x00000020) + nvkm_pci_mask(pci, 0x0080, 0x00000100, 0x00000100); + else + nvkm_pci_mask(pci, 0x041c, 0x00000060, 0x00000000); +} + +int +g84_pcie_init(struct nvkm_pci *pci) +{ + bool full_speed = g84_pcie_cur_speed(pci) == NVKM_PCIE_SPEED_5_0; + g84_pcie_set_cap_speed(pci, full_speed); + return 0; +} + +static const struct nvkm_pci_func +g84_pci_func = { + .init = g84_pci_init, + .rd32 = nv40_pci_rd32, + .wr08 = nv40_pci_wr08, + .wr32 = nv40_pci_wr32, + .msi_rearm = nv46_pci_msi_rearm, + + .pcie.init = g84_pcie_init, + .pcie.set_link = g84_pcie_set_link, + + .pcie.max_speed = g84_pcie_max_speed, + .pcie.cur_speed = g84_pcie_cur_speed, + + .pcie.set_version = g84_pcie_set_version, + .pcie.version = g84_pcie_version, + .pcie.version_supported = g84_pcie_version_supported, +}; + +int +g84_pci_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, + struct nvkm_pci **ppci) +{ + return nvkm_pci_new_(&g84_pci_func, device, type, inst, ppci); +} -- cgit v1.2.3