From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by gabe.freedesktop.org (Postfix) with ESMTPS id 700A710E458 for ; Fri, 22 Apr 2022 12:08:12 +0000 (UTC) From: "Gupta, Anshuman" To: "Vivi, Rodrigo" Date: Fri, 22 Apr 2022 12:08:10 +0000 Message-ID: References: <20220418125048.7969-1-anshuman.gupta@intel.com> <20220418125048.7969-6-anshuman.gupta@intel.com> In-Reply-To: Content-Language: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Subject: Re: [igt-dev] [PATCH i-g-t 5/9] tools: Add intel_pm_rpm tool List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "igt-dev@lists.freedesktop.org" , "Nilawar, Badal" Errors-To: igt-dev-bounces@lists.freedesktop.org Sender: "igt-dev" List-ID: > -----Original Message----- > From: Vivi, Rodrigo > Sent: Friday, April 22, 2022 3:52 PM > To: Gupta, Anshuman > Cc: igt-dev@lists.freedesktop.org; Nilawar, Badal > Subject: Re: [igt-dev] [PATCH i-g-t 5/9] tools: Add intel_pm_rpm tool >=20 > On Mon, Apr 18, 2022 at 06:20:44PM +0530, Anshuman Gupta wrote: > > intel_pm_rpm tool is a debug tool. It can be use to setup and prepare > > the gfx card to go to D3Cold. > > It also provide the debug option to disable all display and prepare > > device to enter to runtime suspend. > > > > Cc: Rodrigo Vivi > > Signed-off-by: Anshuman Gupta > > --- > > tools/intel_pm_rpm.c | 209 > +++++++++++++++++++++++++++++++++++++++++++ > > tools/meson.build | 1 + > > 2 files changed, 210 insertions(+) > > create mode 100644 tools/intel_pm_rpm.c > > > > diff --git a/tools/intel_pm_rpm.c b/tools/intel_pm_rpm.c new file mode > > 100644 index 000000000..df9cfa632 > > --- /dev/null > > +++ b/tools/intel_pm_rpm.c > > @@ -0,0 +1,209 @@ > > +/* > > + * Copyright (c) 2022 Intel Corporation > > + * > > + * 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 (including > > +the next > > + * paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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. > > + * > > + */ > > + > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include "igt.h" > > +#include "igt_device.h" > > +#include "igt_device_scan.h" > > +#include "igt_pm.h" > > + > > +typedef struct { > > + int drm_fd; > > + int debugfs_fd; > > + uint32_t devid; > > + drmModeResPtr res; > > + igt_display_t display; > > +} data_t; > > + > > +const char *help_str =3D > > + " --disable-display\t\tDisable all screen and try to go into runtime > pm.\n" > > + " --setup-d3cold\t\tPrepare dgfx gfx card to enter runtime D3Cold.\n= " > > + " --help\t\tProvide help. Provide card name with > > +IGT_DEVICE=3Ddrm:/dev/dri/card*."; static struct option long_options[]= =3D { > > + {"disable-display", 0, 0, 'd'}, > > + {"setup-d3cold", 0, 0, 's'}, > > + {"help", 0, 0, 'h'}, > > + { 0, 0, 0, 0 } > > +}; > > + > > +const char *optstr =3D "dsh"; > > + > > +static void usage(const char *name) > > +{ > > + igt_info("Usage: %s [options]\n", name); > > + igt_info("%s\n", help_str); > > +} > > + > > +static void disable_all_displays(data_t *data) { > > + igt_output_t *output; > > + > > + for (int i =3D 0; i < data->display.n_outputs; i++) { > > + output =3D &data->display.outputs[i]; > > + igt_output_set_pipe(output, PIPE_NONE); > > + igt_display_commit(&data->display); > > + } > > +} > > + > > +static void setup_gfx_card_d3cold(data_t *data) { > > + struct pci_device *root; > > + int d_state; > > + > > + /* igfx does not support d3cold */ > > + if (!IS_DGFX(data->devid)) > > + return; >=20 > I believe the if below will already take care of this since the real_powe= r_state > won't show up. However, let's keep this check here to be really clear on = the > expectations and to avoid navigating the tree in vain... >=20 > > + > > + root =3D igt_device_get_pci_root_port(data->drm_fd); > > + > > + if (!igt_pm_acpi_d3cold_supported(root)) { > > + igt_info("D3Cold isn't supported on Root port > %04x:%02x:%02x.%01x\n", > > + root->domain, root->bus, root->dev, root->func); > > + return; > > + } > > + > > + disable_all_displays(data); > > + igt_pm_setup_pci_card_runtime_pm(root); > > + sleep(1); > > + d_state =3D igt_pm_get_acpi_real_d_state(root); > > + > > + if (d_state =3D=3D IGT_ACPI_D3Cold) { > > + igt_info("D3Cold achieved for root port > %04x:%02x:%02x.%01x\n", > > + root->domain, root->bus, root->dev, root->func); > > + } else { > > + igt_pm_print_pci_card_runtime_status(); > > + igt_info("D3Cold not achieved yet. Please monitor > %04x:%02x:%02x.%01x real_power_state\n", > > + root->domain, root->bus, root->dev, root->func); > > + } > > +} > > + > > +int main(int argc, char *argv[]) > > +{ > > + bool disable_display =3D false, setup_d3cold =3D false; > > + struct igt_device_card card; > > + char *env_device =3D NULL; > > + int c, option_index =3D 0; > > + data_t data =3D {}; > > + int ret =3D 0; > > + > > + if (argc <=3D 1) { > > + usage(argv[0]); > > + return EXIT_SUCCESS; > > + } > > + > > + env_device =3D getenv("IGT_DEVICE"); > > + igt_devices_scan(false); > > + > > + if (env_device) { > > + if (!igt_device_card_match(env_device, &card)) { > > + igt_warn("No device found for the env_device\n"); > > + ret =3D EXIT_FAILURE; > > + goto exit; > > + } > > + } else { > > + if (!igt_device_find_first_i915_discrete_card(&card)) { > > + igt_warn("No discrete gpu found\n"); > > + ret =3D EXIT_FAILURE; > > + goto exit; > > + } > > + } > > + > > + while ((c =3D getopt_long(argc, argv, optstr, > > + long_options, &option_index)) !=3D -1) { > > + switch (c) { > > + case 'd': > > + disable_display =3D true; > > + break; > > + case 's': > > + setup_d3cold =3D true; > > + break; > > + default: > > + case 'h': > > + usage(argv[0]); > > + ret =3D EXIT_SUCCESS; > > + goto exit; > > + } > > + } > > + > > + data.drm_fd =3D igt_open_card(&card); > > + if (data.drm_fd >=3D 0) { > > + igt_info("Device %s successfully opened\n", card.card); > > + } else { > > + igt_warn("Cannot open card %s device\n", card.card); > > + ret =3D EXIT_FAILURE; > > + goto exit; > > + } > > + > > + data.debugfs_fd =3D igt_debugfs_dir(data.drm_fd); > > + data.devid =3D intel_get_drm_devid(data.drm_fd); > > + igt_setup_runtime_pm(data.drm_fd); > > + > > + data.res =3D drmModeGetResources(data.drm_fd); > > + if (data.res) { > > + kmstest_set_vt_graphics_mode(); > > + igt_display_require(&data.display, data.drm_fd); > > + > > + if (!igt_pm_dmc_loaded(data.debugfs_fd)) { > > + igt_warn("dmc fw is not loaded, no runtime pm\n"); > > + ret =3D EXIT_FAILURE; > > + goto exit; > > + } > > + } >=20 > Do we really need this? It is only for checking if DMC is there in case w= e have > display right? > Should deserve a comment at least... >=20 > but already can use my: >=20 > Reviewed-by: Rodrigo Vivi Thanks for Review. I will add below comment, with respect to https://cgit.freedesktop.org/drm-= tip/tree/drivers/gpu/drm/i915/display/intel_dmc.c#n791. /* i915 disables RPM in case DMC is not loaded on display supported cards *= / Br, Anshuman Gupta >=20 > if explained with reply here or with comment if you see it fits >=20 > > + > > + if (disable_display) { > > + disable_all_displays(&data); > > + if > (!igt_wait_for_pm_status(IGT_RUNTIME_PM_STATUS_SUSPENDED)) { > > + __igt_debugfs_dump(data.drm_fd, > "i915_runtime_pm_status", IGT_LOG_INFO); > > + ret =3D EXIT_FAILURE; > > + goto exit; > > + } > > + > > + igt_info("Device runtime suspended, Useful for debugging.\n" > > + "Hit CTRL-C to exit\n"); > > + /* Don't return useful for debugging */ > > + while (1) > > + sleep(600); > > + } > > + > > + if (setup_d3cold) > > + setup_gfx_card_d3cold(&data); > > + > > +exit: > > + igt_restore_runtime_pm(); > > + > > + if (data.res) > > + igt_display_fini(&data.display); > > + > > + close(data.debugfs_fd); > > + close(data.drm_fd); > > + igt_devices_free(); > > + > > + return ret; > > +} > > diff --git a/tools/meson.build b/tools/meson.build index > > 771d0b9e3..24d0ea714 100644 > > --- a/tools/meson.build > > +++ b/tools/meson.build > > @@ -28,6 +28,7 @@ tools_progs =3D [ > > 'intel_lid', > > 'intel_opregion_decode', > > 'intel_panel_fitter', > > + 'intel_pm_rpm', > > 'intel_reg_checker', > > 'intel_residency', > > 'intel_stepping', > > -- > > 2.26.2 > >