From nobody Fri Mar 7 06:28:03 2025 X-Original-To: dev-commits-src-all@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 4Z8GYv6mp0zt43F; Fri, 07 Mar 2025 06:28:03 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R10" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4Z8GYv2fnfz3MYX; Fri, 07 Mar 2025 06:28:03 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1741328883; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=8OSFu+Fr01qplbW2cEiVyDLFoRm+Sj/M6B1ZbFjMwxw=; b=VU1PYwU9aBQShizTcIL1sRd0eXlJ0ctA9z2HQFNWpiCDQT4lRSM8C72knxl/UV8dBuaa8O PanDDKGlXE7UKVmrlVGkWniGRuw1p35gVHN0NL5kd37iYgqNowiTbjW5IvEBqOZd2DmS/f KWcYbs1SL5MLFgk6G2Ydbs8Et5pei/1iuEuPEFbEYu7chJ0FOKiJTyKL6umD5tYUM0Jw36 iPwJov8Q4P42WjntXrd+B4g81bsgZyRc+ZFFzoD/9C6U6mzdIW2Hl5uvC3xcTlIKyvMfci HL3xWonuBPuRKNJNPiQs2rGtI5Cwbj4nxIWS8FT6YZTHWTT8kpzB0hzYfI4sqg== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1741328883; a=rsa-sha256; cv=none; b=MqeDbZmf6DNPutyjHS06YmK4ExCngWp3wVz7wQ/mQJJz0QUlmShSFT09MS6vud6E5ZVvlh RHMaQkLWkCcffqaajEPyzFo84KBf0KT/3eLqBQzAJt+DpbsZrtk9RbWvGvi6iH9uVZgbj+ AOfoNMuzVDnEV6Dcjhmk0UZnOvAI0sDvIotdTVspuHYHZkGlwZehMMA/uxEKIZuINuumzi 3/vgih4Rk9NJ8Y4Iy1ouWpBfaW01qWjBigQKQmFGlai7U6qxwD/SDE2ernDe2cg7DiQ9BY cRs+ZlTpzKktRJigKMWIme7aar706ElDP2/xU5vTQsPY/b52uP57Nx7RwqkJeQ== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1741328883; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=8OSFu+Fr01qplbW2cEiVyDLFoRm+Sj/M6B1ZbFjMwxw=; b=UkOq8PSbpYYUHuNWl8zutgJxZ5gHt3KssquIDqAxRZ6FrfJ4SJtWBTZnNHKbkYay9uZRAH fcLJfxoiIBpkLvT4XRDBcAn3xpOppmQv7yC2viP3LwnnOtUyuYcai8TPBvQZDEnZOUtGQc ovw6SaDV0ihnvir4POMHx+pcxVcazmFgER6pDbRojWrNlIELCXMOjesZnnAsOWLtHDZB1E AUcOOCJWnmdCaa2bhFjKsUbl22zmONTJqwhED444qLzw8fbSRBeDp6v0PnyLcbNcUHDJB3 rU8UAkXnXCXeKOwWqgnal2/e5iKImDyY24CWVhUg9lgSKZz51WpDowoe6e/pow== Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4Z8GYv2GZZz8cj; Fri, 07 Mar 2025 06:28:03 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.18.1/8.18.1) with ESMTP id 5276S3sY093018; Fri, 7 Mar 2025 06:28:03 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.18.1/8.18.1/Submit) id 5276S3mH093015; Fri, 7 Mar 2025 06:28:03 GMT (envelope-from git) Date: Fri, 7 Mar 2025 06:28:03 GMT Message-Id: <202503070628.5276S3mH093015@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Vladimir Kondratyev Subject: git: 548d3aa856a9 - main - iichid(4): Read wMaxInputLength bytes over I2C even if we discards data List-Id: Commit messages for all branches of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-all List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-all@freebsd.org Sender: owner-dev-commits-src-all@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: wulf X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 548d3aa856a97f4483554beceeb57fa9ba0ff913 Auto-Submitted: auto-generated The branch main has been updated by wulf: URL: https://cgit.FreeBSD.org/src/commit/?id=548d3aa856a97f4483554beceeb57fa9ba0ff913 commit 548d3aa856a97f4483554beceeb57fa9ba0ff913 Author: Vladimir Kondratyev AuthorDate: 2025-03-07 06:26:51 +0000 Commit: Vladimir Kondratyev CommitDate: 2025-03-07 06:26:51 +0000 iichid(4): Read wMaxInputLength bytes over I2C even if we discards data For some devices e.g. ITE5570 it is not enough to read HID-over-I2C input length header of RESET command response to acknowledge interrupt. Do a full-size read to avoid interrupt storm. Sponsored by: Future Crew LLC MFC after: 2 month Differential Revision: https://reviews.freebsd.org/D48957 --- sys/dev/iicbus/iichid.c | 47 ++++++++++++++++++++++++++++++++++++----------- 1 file changed, 36 insertions(+), 11 deletions(-) diff --git a/sys/dev/iicbus/iichid.c b/sys/dev/iicbus/iichid.c index fb6e8606adae..1a08bd1d824a 100644 --- a/sys/dev/iicbus/iichid.c +++ b/sys/dev/iicbus/iichid.c @@ -284,11 +284,25 @@ iichid_cmd_read(struct iichid_softc* sc, void *buf, iichid_size_t maxlen, return (error); actlen = actbuf[0] | actbuf[1] << 8; - if (actlen <= 2 || actlen == 0xFFFF || maxlen == 0) { +#ifdef IICHID_SAMPLING + if ((actlen == 0 && sc->sampling_rate_slow < 0) || + (maxlen == 0 && sc->sampling_rate_slow >= 0)) { +#else + if (actlen == 0) { +#endif + /* Read and discard reset command response. */ + msgs[0] = (struct iic_msg) + { sc->addr, IIC_M_RD | IIC_M_NOSTART, + le16toh(sc->desc.wMaxInputLength) - 2, sc->intr_buf }; + actlen = 0; +#ifdef IICHID_SAMPLING + } else if ((actlen <= 2 || actlen == 0xFFFF) && + sc->sampling_rate_slow >= 0) { /* Read and discard 1 byte to send I2C STOP condition. */ msgs[0] = (struct iic_msg) { sc->addr, IIC_M_RD | IIC_M_NOSTART, 1, actbuf }; actlen = 0; +#endif } else { actlen -= 2; if (actlen > maxlen) { @@ -580,7 +594,7 @@ iichid_intr(void *context) { struct iichid_softc *sc; device_t parent; - iichid_size_t maxlen, actual; + iichid_size_t actual; int error; sc = context; @@ -602,9 +616,8 @@ iichid_intr(void *context) * (to ON) before any other command. As some hardware requires reads to * acknowledge interrupts we fetch only length header and discard it. */ - maxlen = sc->power_on ? sc->intr_bufsize : 0; THREAD_SLEEPING_OK(); - error = iichid_cmd_read(sc, sc->intr_buf, maxlen, &actual); + error = iichid_cmd_read(sc, sc->intr_buf, sc->intr_bufsize, &actual); THREAD_NO_SLEEPING(); if (error == 0) { if (sc->power_on) { @@ -812,6 +825,7 @@ iichid_intr_setup(device_t dev, device_t child __unused, hid_intr_t intr, void *context, struct hid_rdesc_info *rdesc) { struct iichid_softc *sc; + device_t parent; if (intr == NULL) return; @@ -821,33 +835,38 @@ iichid_intr_setup(device_t dev, device_t child __unused, hid_intr_t intr, * Do not rely on wMaxInputLength, as some devices may set it to * a wrong length. Find the longest input report in report descriptor. */ - rdesc->rdsize = rdesc->isize; + rdesc->rdsize = + MAX(rdesc->isize, le16toh(sc->desc.wMaxInputLength) - 2); /* Write and get/set_report sizes are limited by I2C-HID protocol. */ rdesc->grsize = rdesc->srsize = IICHID_SIZE_MAX; rdesc->wrsize = IICHID_SIZE_MAX; + parent = device_get_parent(sc->dev); + iicbus_request_bus(parent, sc->dev, IIC_WAIT); + sc->intr_handler = intr; sc->intr_ctx = context; - sc->intr_buf = malloc(rdesc->rdsize, M_DEVBUF, M_WAITOK | M_ZERO); sc->intr_bufsize = rdesc->rdsize; + sc->intr_buf = realloc(sc->intr_buf, sc->intr_bufsize, + M_DEVBUF, M_WAITOK | M_ZERO); #ifdef IICHID_SAMPLING - sc->dup_buf = malloc(rdesc->rdsize, M_DEVBUF, M_WAITOK | M_ZERO); + sc->dup_buf = realloc(sc->dup_buf, sc->intr_bufsize, + M_DEVBUF, M_WAITOK | M_ZERO); taskqueue_start_threads(&sc->taskqueue, 1, PI_TTY, "%s taskq", device_get_nameunit(sc->dev)); #endif + iicbus_release_bus(parent, sc->dev); } static void iichid_intr_unsetup(device_t dev, device_t child __unused) { +#ifdef IICHID_SAMPLING struct iichid_softc *sc; sc = device_get_softc(dev); -#ifdef IICHID_SAMPLING taskqueue_drain_all(sc->taskqueue); - free(sc->dup_buf, M_DEVBUF); #endif - free(sc->intr_buf, M_DEVBUF); } static int @@ -1132,6 +1151,8 @@ iichid_attach(device_t dev) sc->power_on = true; + sc->intr_bufsize = le16toh(sc->desc.wMaxInputLength) - 2; + sc->intr_buf = malloc(sc->intr_bufsize, M_DEVBUF, M_WAITOK | M_ZERO); TASK_INIT(&sc->suspend_task, 0, iichid_suspend_task, sc); #ifdef IICHID_SAMPLING sc->taskqueue = taskqueue_create_fast("iichid_tq", M_WAITOK | M_ZERO, @@ -1142,6 +1163,7 @@ iichid_attach(device_t dev) sc->sampling_rate_slow = -1; sc->sampling_rate_fast = IICHID_SAMPLING_RATE_FAST; sc->sampling_hysteresis = IICHID_SAMPLING_HYSTERESIS; + sc->dup_buf = malloc(sc->intr_bufsize, M_DEVBUF, M_WAITOK | M_ZERO); #endif sc->irq_rid = 0; @@ -1164,6 +1186,7 @@ iichid_attach(device_t dev) if (sc->irq_res != NULL) bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq_res); + iichid_detach(dev); error = ENXIO; goto done; #endif @@ -1189,7 +1212,7 @@ iichid_attach(device_t dev) if (sc->sampling_rate_slow >= 0) { pause("iichid", (hz + 999) / 1000); - (void)iichid_cmd_read(sc, NULL, 0, NULL); + (void)iichid_cmd_read(sc, sc->intr_buf, 0, NULL); } #endif /* IICHID_SAMPLING */ @@ -1232,7 +1255,9 @@ iichid_detach(device_t dev) if (sc->taskqueue != NULL) taskqueue_free(sc->taskqueue); sc->taskqueue = NULL; + free(sc->dup_buf, M_DEVBUF); #endif + free(sc->intr_buf, M_DEVBUF); return (0); }