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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/gpu/drm/nouveau/nvkm/subdev/pci/gk104.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/pci/gk104.c')
-rw-r--r--drivers/gpu/drm/nouveau/nvkm/subdev/pci/gk104.c229
1 files changed, 229 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/gk104.c b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/gk104.c
new file mode 100644
index 000000000..6be87ecff
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/gk104.c
@@ -0,0 +1,229 @@
+/*
+ * Copyright 2015 Karol Herbst <nouveau@karolherbst.de>
+ *
+ * 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: Karol Herbst <nouveau@karolherbst.de>
+ */
+#include "priv.h"
+
+static int
+gk104_pcie_version_supported(struct nvkm_pci *pci)
+{
+ return (nvkm_rd32(pci->subdev.device, 0x8c1c0) & 0x4) == 0x4 ? 2 : 1;
+}
+
+static void
+gk104_pcie_set_cap_speed(struct nvkm_pci *pci, enum nvkm_pcie_speed speed)
+{
+ struct nvkm_device *device = pci->subdev.device;
+
+ switch (speed) {
+ case NVKM_PCIE_SPEED_2_5:
+ gf100_pcie_set_cap_speed(pci, false);
+ nvkm_mask(device, 0x8c1c0, 0x30000, 0x10000);
+ break;
+ case NVKM_PCIE_SPEED_5_0:
+ gf100_pcie_set_cap_speed(pci, true);
+ nvkm_mask(device, 0x8c1c0, 0x30000, 0x20000);
+ break;
+ case NVKM_PCIE_SPEED_8_0:
+ gf100_pcie_set_cap_speed(pci, true);
+ nvkm_mask(device, 0x8c1c0, 0x30000, 0x30000);
+ break;
+ }
+}
+
+static enum nvkm_pcie_speed
+gk104_pcie_cap_speed(struct nvkm_pci *pci)
+{
+ int speed = gf100_pcie_cap_speed(pci);
+
+ if (speed == 0)
+ return NVKM_PCIE_SPEED_2_5;
+
+ if (speed >= 1) {
+ int speed2 = nvkm_rd32(pci->subdev.device, 0x8c1c0) & 0x30000;
+ switch (speed2) {
+ case 0x00000:
+ case 0x10000:
+ return NVKM_PCIE_SPEED_2_5;
+ case 0x20000:
+ return NVKM_PCIE_SPEED_5_0;
+ case 0x30000:
+ return NVKM_PCIE_SPEED_8_0;
+ }
+ }
+
+ return -EINVAL;
+}
+
+static void
+gk104_pcie_set_lnkctl_speed(struct nvkm_pci *pci, enum nvkm_pcie_speed speed)
+{
+ u8 reg_v = 0;
+ switch (speed) {
+ case NVKM_PCIE_SPEED_2_5:
+ reg_v = 1;
+ break;
+ case NVKM_PCIE_SPEED_5_0:
+ reg_v = 2;
+ break;
+ case NVKM_PCIE_SPEED_8_0:
+ reg_v = 3;
+ break;
+ }
+ nvkm_pci_mask(pci, 0xa8, 0x3, reg_v);
+}
+
+static enum nvkm_pcie_speed
+gk104_pcie_lnkctl_speed(struct nvkm_pci *pci)
+{
+ u8 reg_v = nvkm_pci_rd32(pci, 0xa8) & 0x3;
+ switch (reg_v) {
+ case 0:
+ case 1:
+ return NVKM_PCIE_SPEED_2_5;
+ case 2:
+ return NVKM_PCIE_SPEED_5_0;
+ case 3:
+ return NVKM_PCIE_SPEED_8_0;
+ }
+ return -1;
+}
+
+static enum nvkm_pcie_speed
+gk104_pcie_max_speed(struct nvkm_pci *pci)
+{
+ u32 max_speed = nvkm_rd32(pci->subdev.device, 0x8c1c0) & 0x300000;
+ switch (max_speed) {
+ case 0x000000:
+ return NVKM_PCIE_SPEED_8_0;
+ case 0x100000:
+ return NVKM_PCIE_SPEED_5_0;
+ case 0x200000:
+ return NVKM_PCIE_SPEED_2_5;
+ }
+ return NVKM_PCIE_SPEED_2_5;
+}
+
+static void
+gk104_pcie_set_link_speed(struct nvkm_pci *pci, enum nvkm_pcie_speed speed)
+{
+ struct nvkm_device *device = pci->subdev.device;
+ u32 mask_value;
+
+ switch (speed) {
+ case NVKM_PCIE_SPEED_8_0:
+ mask_value = 0x00000;
+ break;
+ case NVKM_PCIE_SPEED_5_0:
+ mask_value = 0x40000;
+ break;
+ case NVKM_PCIE_SPEED_2_5:
+ default:
+ mask_value = 0x80000;
+ break;
+ }
+
+ nvkm_mask(device, 0x8c040, 0xc0000, mask_value);
+ nvkm_mask(device, 0x8c040, 0x1, 0x1);
+}
+
+static int
+gk104_pcie_init(struct nvkm_pci * pci)
+{
+ enum nvkm_pcie_speed lnkctl_speed, max_speed, cap_speed;
+ struct nvkm_subdev *subdev = &pci->subdev;
+
+ if (gf100_pcie_version(pci) < 2)
+ return 0;
+
+ lnkctl_speed = gk104_pcie_lnkctl_speed(pci);
+ max_speed = gk104_pcie_max_speed(pci);
+ cap_speed = gk104_pcie_cap_speed(pci);
+
+ if (cap_speed != max_speed) {
+ nvkm_trace(subdev, "adjusting cap to max speed\n");
+ gk104_pcie_set_cap_speed(pci, max_speed);
+ cap_speed = gk104_pcie_cap_speed(pci);
+ if (cap_speed != max_speed)
+ nvkm_warn(subdev, "failed to adjust cap speed\n");
+ }
+
+ if (lnkctl_speed != max_speed) {
+ nvkm_debug(subdev, "adjusting lnkctl to max speed\n");
+ gk104_pcie_set_lnkctl_speed(pci, max_speed);
+ lnkctl_speed = gk104_pcie_lnkctl_speed(pci);
+ if (lnkctl_speed != max_speed)
+ nvkm_error(subdev, "failed to adjust lnkctl speed\n");
+ }
+
+ return 0;
+}
+
+static int
+gk104_pcie_set_link(struct nvkm_pci *pci, enum nvkm_pcie_speed speed, u8 width)
+{
+ struct nvkm_subdev *subdev = &pci->subdev;
+ enum nvkm_pcie_speed lnk_ctl_speed = gk104_pcie_lnkctl_speed(pci);
+ enum nvkm_pcie_speed lnk_cap_speed = gk104_pcie_cap_speed(pci);
+
+ if (speed > lnk_cap_speed) {
+ speed = lnk_cap_speed;
+ nvkm_warn(subdev, "dropping requested speed due too low cap"
+ " speed\n");
+ }
+
+ if (speed > lnk_ctl_speed) {
+ speed = lnk_ctl_speed;
+ nvkm_warn(subdev, "dropping requested speed due too low"
+ " lnkctl speed\n");
+ }
+
+ gk104_pcie_set_link_speed(pci, speed);
+ return 0;
+}
+
+
+static const struct nvkm_pci_func
+gk104_pci_func = {
+ .init = g84_pci_init,
+ .rd32 = nv40_pci_rd32,
+ .wr08 = nv40_pci_wr08,
+ .wr32 = nv40_pci_wr32,
+ .msi_rearm = nv40_pci_msi_rearm,
+
+ .pcie.init = gk104_pcie_init,
+ .pcie.set_link = gk104_pcie_set_link,
+
+ .pcie.max_speed = gk104_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 = gk104_pcie_version_supported,
+};
+
+int
+gk104_pci_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
+ struct nvkm_pci **ppci)
+{
+ return nvkm_pci_new_(&gk104_pci_func, device, type, inst, ppci);
+}