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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/gpu/drm/nouveau/nvkm/subdev/volt/base.c | |
parent | Initial commit. (diff) | |
download | linux-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/volt/base.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/volt/base.c | 328 |
1 files changed, 328 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/volt/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/volt/base.c new file mode 100644 index 000000000..a17a6dd8d --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/volt/base.c @@ -0,0 +1,328 @@ +/* + * Copyright 2013 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 <subdev/bios.h> +#include <subdev/bios/vmap.h> +#include <subdev/bios/volt.h> +#include <subdev/therm.h> + +int +nvkm_volt_get(struct nvkm_volt *volt) +{ + int ret, i; + + if (volt->func->volt_get) + return volt->func->volt_get(volt); + + ret = volt->func->vid_get(volt); + if (ret >= 0) { + for (i = 0; i < volt->vid_nr; i++) { + if (volt->vid[i].vid == ret) + return volt->vid[i].uv; + } + ret = -EINVAL; + } + return ret; +} + +static int +nvkm_volt_set(struct nvkm_volt *volt, u32 uv) +{ + struct nvkm_subdev *subdev = &volt->subdev; + int i, ret = -EINVAL, best_err = volt->max_uv, best = -1; + + if (volt->func->volt_set) + return volt->func->volt_set(volt, uv); + + for (i = 0; i < volt->vid_nr; i++) { + int err = volt->vid[i].uv - uv; + if (err < 0 || err > best_err) + continue; + + best_err = err; + best = i; + if (best_err == 0) + break; + } + + if (best == -1) { + nvkm_error(subdev, "couldn't set %iuv\n", uv); + return ret; + } + + ret = volt->func->vid_set(volt, volt->vid[best].vid); + nvkm_debug(subdev, "set req %duv to %duv: %d\n", uv, + volt->vid[best].uv, ret); + return ret; +} + +int +nvkm_volt_map_min(struct nvkm_volt *volt, u8 id) +{ + struct nvkm_bios *bios = volt->subdev.device->bios; + struct nvbios_vmap_entry info; + u8 ver, len; + u32 vmap; + + vmap = nvbios_vmap_entry_parse(bios, id, &ver, &len, &info); + if (vmap) { + if (info.link != 0xff) { + int ret = nvkm_volt_map_min(volt, info.link); + if (ret < 0) + return ret; + info.min += ret; + } + return info.min; + } + + return id ? id * 10000 : -ENODEV; +} + +int +nvkm_volt_map(struct nvkm_volt *volt, u8 id, u8 temp) +{ + struct nvkm_bios *bios = volt->subdev.device->bios; + struct nvbios_vmap_entry info; + u8 ver, len; + u32 vmap; + + vmap = nvbios_vmap_entry_parse(bios, id, &ver, &len, &info); + if (vmap) { + s64 result; + + if (volt->speedo < 0) + return volt->speedo; + + if (ver == 0x10 || (ver == 0x20 && info.mode == 0)) { + result = div64_s64((s64)info.arg[0], 10); + result += div64_s64((s64)info.arg[1] * volt->speedo, 10); + result += div64_s64((s64)info.arg[2] * volt->speedo * volt->speedo, 100000); + } else if (ver == 0x20) { + switch (info.mode) { + /* 0x0 handled above! */ + case 0x1: + result = ((s64)info.arg[0] * 15625) >> 18; + result += ((s64)info.arg[1] * volt->speedo * 15625) >> 18; + result += ((s64)info.arg[2] * temp * 15625) >> 10; + result += ((s64)info.arg[3] * volt->speedo * temp * 15625) >> 18; + result += ((s64)info.arg[4] * volt->speedo * volt->speedo * 15625) >> 30; + result += ((s64)info.arg[5] * temp * temp * 15625) >> 18; + break; + case 0x3: + result = (info.min + info.max) / 2; + break; + case 0x2: + default: + result = info.min; + break; + } + } else { + return -ENODEV; + } + + result = min(max(result, (s64)info.min), (s64)info.max); + + if (info.link != 0xff) { + int ret = nvkm_volt_map(volt, info.link, temp); + if (ret < 0) + return ret; + result += ret; + } + return result; + } + + return id ? id * 10000 : -ENODEV; +} + +int +nvkm_volt_set_id(struct nvkm_volt *volt, u8 id, u8 min_id, u8 temp, + int condition) +{ + int ret; + + if (volt->func->set_id) + return volt->func->set_id(volt, id, condition); + + ret = nvkm_volt_map(volt, id, temp); + if (ret >= 0) { + int prev = nvkm_volt_get(volt); + if (!condition || prev < 0 || + (condition < 0 && ret < prev) || + (condition > 0 && ret > prev)) { + int min = nvkm_volt_map(volt, min_id, temp); + if (min >= 0) + ret = max(min, ret); + ret = nvkm_volt_set(volt, ret); + } else { + ret = 0; + } + } + return ret; +} + +static void +nvkm_volt_parse_bios(struct nvkm_bios *bios, struct nvkm_volt *volt) +{ + struct nvkm_subdev *subdev = &bios->subdev; + struct nvbios_volt_entry ivid; + struct nvbios_volt info; + u8 ver, hdr, cnt, len; + u32 data; + int i; + + data = nvbios_volt_parse(bios, &ver, &hdr, &cnt, &len, &info); + if (data && info.vidmask && info.base && info.step && info.ranged) { + nvkm_debug(subdev, "found ranged based VIDs\n"); + volt->min_uv = info.min; + volt->max_uv = info.max; + for (i = 0; i < info.vidmask + 1; i++) { + if (info.base >= info.min && + info.base <= info.max) { + volt->vid[volt->vid_nr].uv = info.base; + volt->vid[volt->vid_nr].vid = i; + volt->vid_nr++; + } + info.base += info.step; + } + volt->vid_mask = info.vidmask; + } else if (data && info.vidmask && !info.ranged) { + nvkm_debug(subdev, "found entry based VIDs\n"); + volt->min_uv = 0xffffffff; + volt->max_uv = 0; + for (i = 0; i < cnt; i++) { + data = nvbios_volt_entry_parse(bios, i, &ver, &hdr, + &ivid); + if (data) { + volt->vid[volt->vid_nr].uv = ivid.voltage; + volt->vid[volt->vid_nr].vid = ivid.vid; + volt->vid_nr++; + volt->min_uv = min(volt->min_uv, ivid.voltage); + volt->max_uv = max(volt->max_uv, ivid.voltage); + } + } + volt->vid_mask = info.vidmask; + } else if (data && info.type == NVBIOS_VOLT_PWM) { + volt->min_uv = info.base; + volt->max_uv = info.base + info.pwm_range; + } +} + +static int +nvkm_volt_speedo_read(struct nvkm_volt *volt) +{ + if (volt->func->speedo_read) + return volt->func->speedo_read(volt); + return -EINVAL; +} + +static int +nvkm_volt_init(struct nvkm_subdev *subdev) +{ + struct nvkm_volt *volt = nvkm_volt(subdev); + int ret = nvkm_volt_get(volt); + if (ret < 0) { + if (ret != -ENODEV) + nvkm_debug(subdev, "current voltage unknown\n"); + return 0; + } + nvkm_debug(subdev, "current voltage: %duv\n", ret); + return 0; +} + +static int +nvkm_volt_oneinit(struct nvkm_subdev *subdev) +{ + struct nvkm_volt *volt = nvkm_volt(subdev); + + volt->speedo = nvkm_volt_speedo_read(volt); + if (volt->speedo > 0) + nvkm_debug(&volt->subdev, "speedo %x\n", volt->speedo); + + if (volt->func->oneinit) + return volt->func->oneinit(volt); + + return 0; +} + +static void * +nvkm_volt_dtor(struct nvkm_subdev *subdev) +{ + return nvkm_volt(subdev); +} + +static const struct nvkm_subdev_func +nvkm_volt = { + .dtor = nvkm_volt_dtor, + .init = nvkm_volt_init, + .oneinit = nvkm_volt_oneinit, +}; + +void +nvkm_volt_ctor(const struct nvkm_volt_func *func, struct nvkm_device *device, + enum nvkm_subdev_type type, int inst, struct nvkm_volt *volt) +{ + struct nvkm_bios *bios = device->bios; + int i; + + nvkm_subdev_ctor(&nvkm_volt, device, type, inst, &volt->subdev); + volt->func = func; + + /* Assuming the non-bios device should build the voltage table later */ + if (bios) { + u8 ver, hdr, cnt, len; + struct nvbios_vmap vmap; + + nvkm_volt_parse_bios(bios, volt); + nvkm_debug(&volt->subdev, "min: %iuv max: %iuv\n", + volt->min_uv, volt->max_uv); + + if (nvbios_vmap_parse(bios, &ver, &hdr, &cnt, &len, &vmap)) { + volt->max0_id = vmap.max0; + volt->max1_id = vmap.max1; + volt->max2_id = vmap.max2; + } else { + volt->max0_id = 0xff; + volt->max1_id = 0xff; + volt->max2_id = 0xff; + } + } + + if (volt->vid_nr) { + for (i = 0; i < volt->vid_nr; i++) { + nvkm_debug(&volt->subdev, "VID %02x: %duv\n", + volt->vid[i].vid, volt->vid[i].uv); + } + } +} + +int +nvkm_volt_new_(const struct nvkm_volt_func *func, struct nvkm_device *device, + enum nvkm_subdev_type type, int inst, struct nvkm_volt **pvolt) +{ + if (!(*pvolt = kzalloc(sizeof(**pvolt), GFP_KERNEL))) + return -ENOMEM; + nvkm_volt_ctor(func, device, type, inst, *pvolt); + return 0; +} |