From nobody Wed May 3 00:06:02 2023 X-Original-To: freebsd-acpi@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4Q9y0b05vXz48MSs for ; Wed, 3 May 2023 00:06:23 +0000 (UTC) (envelope-from dmitry.medvedev@gmail.com) Received: from mail-pl1-x636.google.com (mail-pl1-x636.google.com [IPv6:2607:f8b0:4864:20::636]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1D4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4Q9y0X0x9Kz3jbC for ; Wed, 3 May 2023 00:06:20 +0000 (UTC) (envelope-from dmitry.medvedev@gmail.com) Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20221208 header.b=YCK8hIPM; spf=pass (mx1.freebsd.org: domain of dmitry.medvedev@gmail.com designates 2607:f8b0:4864:20::636 as permitted sender) smtp.mailfrom=dmitry.medvedev@gmail.com; dmarc=pass (policy=none) header.from=gmail.com Received: by mail-pl1-x636.google.com with SMTP id d9443c01a7336-1aafa03f541so28404145ad.0 for ; Tue, 02 May 2023 17:06:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1683072378; x=1685664378; h=to:subject:message-id:date:from:mime-version:from:to:cc:subject :date:message-id:reply-to; bh=Vu2c9c13cS5mY80+IgEoYuX4o2Aw6WY6msIIJO52gT8=; b=YCK8hIPMiYUd8bo+DUqRzBxvE06N8Oc1PlCqW04uXvuW36/kB6eTZ9P681U6Ajhn1s D1YihSmR9lYmZ+/ep8BcXMJwJBbe28RMDjCUJig0uV/HJzvN4agYThUCGJX1lbDhPiXr E1n3Mmqt82qbEXUcmw648ZKiqskpL5ZqoSONkgeFKdg+Kzr/EV/7aUmIxg0igdbMi3CL uHWxAEyb/Wu6jHsZml6nTI6PzAsRaZZtrw2DpkUU0DkVrte38Qn4gmL9QSODZDzLw1pJ seeR0R57NdnQ458OgbnWzZCdG1O0vthEgU8+cjtMrd4KU40HUCnxsi2X1BRDqBK61JRh V3ww== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1683072378; x=1685664378; h=to:subject:message-id:date:from:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=Vu2c9c13cS5mY80+IgEoYuX4o2Aw6WY6msIIJO52gT8=; b=l+elnI1xJKyC6Isr0oZp+8808tUgFW/PNmeh70LLTOqzP1TNn4GIbpmHobQkmk0f9w 1HDjR57NOXzFntPNkqU95fs0rBIH4gOIEB3qUR5YnqyCQljI3Cin3M5ue7mSrThXSDtQ LoBQy17pK4XLQBye0akCjIYnq03P+sPNajF5t3Zo6ZcK7rETYxiP7T0MXpEyhoeanBz8 NtYhPESPJGiHpay8+iAzZ68MUHLIEd9pAfHOnsyhXt2wvd3VAWbUA3/6lw/OAZtIj3CU qxTKSbcskQflIIwt7fsuDzT2tiwa34o95wYLma3ZWzGvULwlDkjgDcQUTjHpJqS+IB5R 2d+A== X-Gm-Message-State: AC+VfDxJxbMqHix6aFts3V3rtu0jrd3mO3syJHqkU8szS/5vl3XQp0gg QPJFbxf5pYpzsqq2FWZjMtkytMXFs0OCDnNUQ8o2BjWLE7Dx8g== X-Google-Smtp-Source: ACHHUZ6ydGkVpaTPHMREnqR/UjIomqde00ekw4jZaHIH7mVHGY/yr2R6o9rF0DqDdkHTgvHSFcULk2qRyMFF2V27RzE= X-Received: by 2002:a17:902:d511:b0:1a8:1b63:8aee with SMTP id b17-20020a170902d51100b001a81b638aeemr290842plg.46.1683072378372; Tue, 02 May 2023 17:06:18 -0700 (PDT) List-Id: ACPI and power management development List-Archive: https://lists.freebsd.org/archives/freebsd-acpi List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-acpi@freebsd.org MIME-Version: 1.0 From: "Dmitry N. Medvedev" Date: Wed, 3 May 2023 02:06:02 +0200 Message-ID: Subject: managing a fan speed via memory address To: freebsd-acpi@freebsd.org Content-Type: multipart/alternative; boundary="0000000000003e894505fabed359" X-Spamd-Result: default: False [-3.88 / 15.00]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.88)[-0.884]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20221208]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; FREEMAIL_FROM(0.00)[gmail.com]; PREVIOUSLY_DELIVERED(0.00)[freebsd-acpi@freebsd.org]; BLOCKLISTDE_FAIL(0.00)[2607:f8b0:4864:20::636:server fail]; RCPT_COUNT_ONE(0.00)[1]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::636:from]; ARC_NA(0.00)[]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; TAGGED_FROM(0.00)[]; DKIM_TRACE(0.00)[gmail.com:+]; MID_RHS_MATCH_FROMTLD(0.00)[]; TO_DN_NONE(0.00)[]; MLMMJ_DEST(0.00)[freebsd-acpi@freebsd.org]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; RCVD_TLS_LAST(0.00)[]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; FREEMAIL_ENVFROM(0.00)[gmail.com]; RCVD_COUNT_TWO(0.00)[2] X-Rspamd-Queue-Id: 4Q9y0X0x9Kz3jbC X-Spamd-Bar: --- X-ThisMailContainsUnwantedMimeParts: N --0000000000003e894505fabed359 Content-Type: text/plain; charset="UTF-8" good morning, Recently I have learned about the dmidecode program and found the address of the FRNTFAN port in my HP Z420 machine: 0x0037. Since I am a complete newbie, I would like to learn if there is a way to read and change the value at this address. I need a bit of guidance. *The context*: I have added 8 SAS disks to the machine, put noctua fan in front of them and connected the fan to the FRNTFAN port on the motherboard. It looks like the fan works, but I am sure the disks would benefit if the fan produced more pressure. Which I fantasize I could do via changing the value at the said address. Not sure, of course. best regards, Dmitry N. Medvedev --0000000000003e894505fabed359 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
good m= orning,

Recently I have learned about the dmidecode prog= ram and found the address of the FRNTFAN port in my HP Z420 machine: 0x0037= .
Since I am a complete newbie, I would like to learn if there is= a way to read and change the value at this address.
I need a bit= of guidance.

The context: I have added 8 S= AS disks to the machine, put noctua fan in front of them and connected the = fan to the FRNTFAN=C2=A0port on the motherboard.
It looks like th= e fan works, but I am sure the disks would benefit if the fan produced more= pressure. Which I fantasize I could do via changing the value at the said = address.
Not sure, of course.

best regar= ds,
D= mitry N. Medvedev
--0000000000003e894505fabed359--