this tool can be run alongside the nvidia driver to print information about the current p/cstate, which voltage was set by nvidia and what nouveau would set in the same situation.
Signed-off-by: Karol Herbst <[email protected]> --- bin/nv_cmp_volt.c | 130 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 130 insertions(+) create mode 100644 bin/nv_cmp_volt.c diff --git a/bin/nv_cmp_volt.c b/bin/nv_cmp_volt.c new file mode 100644 index 0000000..6147a7d --- /dev/null +++ b/bin/nv_cmp_volt.c @@ -0,0 +1,130 @@ +/* + * Copyright 2016 Karol Herbst + * + * 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 + */ + +#include <nvif/client.h> +#include <nvif/device.h> +#include <nvif/class.h> + +#include <nvkm/subdev/volt.h> + +#include "util.h" + +int +main(int argc, char **argv) +{ + struct nvif_client if_client; + struct nvif_device if_device; + struct nvkm_clk *clk; + struct nvkm_volt *volt; + struct nvkm_device *device; + int ret; + int old_voltage = 0, old_nouveau_voltage = 0, old_pstate = 0; + int old_cstate = 0, old_temp = 0; + + ret = u_device("lib", argv[0], "error", true, true, + (1ULL << NVKM_SUBDEV_CLK) | +// (1ULL << NVKM_SUBDEV_FUSE) | + (1ULL << NVKM_SUBDEV_GPIO) | +// (1ULL << NVKM_SUBDEV_I2C) | + (1ULL << NVKM_SUBDEV_PCI) | +// (1ULL << NVKM_SUBDEV_THERM) | +// (1ULL << NVKM_SUBDEV_TIMER) | + (1ULL << NVKM_SUBDEV_VBIOS) | + (1ULL << NVKM_SUBDEV_VOLT), + 0x00000000, &if_client, &if_device); + + if (ret < 0) + return ret; + + device = nvxx_device(&if_device); + clk = device->clk; +// therm = device->therm; + volt = device->volt; + + printf("current voltage (µV), expected voltage (µV), abs diff (µV)," + "rel diff nouveau/nvidia (%%), pstate, cstate, temperature" + "(°C)\n"); + while (true) { + int gpc_clock = nvkm_clk_read(clk, nv_clk_src_gpc); + int mem_clock = nvkm_clk_read(clk, nv_clk_src_mem); + struct nvkm_pstate *pstate = NULL, *best_pstate = NULL; + struct nvkm_cstate *cstate = NULL, *best_cstate = NULL; + int mem_err, gpc_err; + int new_voltage, new_nouveau_voltage, new_pstate, new_cstate; + int new_temp; + + list_for_each_entry(pstate, &clk->states, head) { + list_for_each_entry(cstate, &pstate->list, head) { + if (!best_pstate) { + best_pstate = pstate; + best_cstate = cstate; + gpc_err = abs(cstate->domain[nv_clk_src_gpc] - gpc_clock); + mem_err = abs(cstate->domain[nv_clk_src_mem] - mem_clock); + continue; + } + + if (abs(cstate->domain[nv_clk_src_gpc] - gpc_clock) <= gpc_err && + abs(cstate->domain[nv_clk_src_mem] - mem_clock) <= mem_err) { + best_pstate = pstate; + best_cstate = cstate; + gpc_err = abs(cstate->domain[nv_clk_src_gpc] - gpc_clock); + mem_err = abs(cstate->domain[nv_clk_src_mem] - mem_clock); + } + } + + if (!best_pstate) { + best_pstate = pstate; + mem_err = abs(cstate->domain[nv_clk_src_mem] - mem_clock); + continue; + } else if (!best_cstate && (pstate->base.domain[nv_clk_src_mem] - mem_clock) <= mem_err) { + best_pstate = pstate; + mem_err = abs(cstate->domain[nv_clk_src_mem] - mem_clock); + } + } + + if (!best_cstate) + best_cstate = &best_pstate->base; + + new_voltage = nvkm_volt_get(volt); + new_temp = nvkm_rd32(device, 0x20400);//nvkm_therm_temp_get(therm); + new_nouveau_voltage = max(nvkm_volt_map(volt, best_cstate->voltage), nvkm_volt_map(volt, best_pstate->base.voltage)); + new_pstate = best_pstate->pstate; + new_cstate = best_cstate->cstate; + + if (new_voltage != old_voltage || new_nouveau_voltage != old_nouveau_voltage || new_pstate != old_pstate || new_cstate != old_cstate || new_temp != old_temp) { + old_voltage = new_voltage; + old_nouveau_voltage = new_nouveau_voltage; + old_pstate = new_pstate; + old_cstate = new_cstate; + old_temp = new_temp; + printf("%i, %i, %i, %f, %i, %i, %i\n", new_voltage, + new_nouveau_voltage, new_nouveau_voltage - new_voltage, + 100 * (double)new_nouveau_voltage / new_voltage, + new_pstate, new_cstate, new_temp); + } + usleep(100000); + } + + return 0; +} -- 2.8.1 _______________________________________________ Nouveau mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/nouveau
