From patchwork Thu Feb 4 21:52:26 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Michael S. Tsirkin" X-Patchwork-Id: 8228151 Return-Path: X-Original-To: patchwork-qemu-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id CB9069F3CD for ; Thu, 4 Feb 2016 22:06:11 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id E49362034C for ; Thu, 4 Feb 2016 22:06:10 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D084B200C6 for ; Thu, 4 Feb 2016 22:06:09 +0000 (UTC) Received: from localhost ([::1]:44385 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aRS2S-0006zK-Tn for patchwork-qemu-devel@patchwork.kernel.org; Thu, 04 Feb 2016 17:06:08 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44787) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aRRpI-0006sF-Vu for qemu-devel@nongnu.org; Thu, 04 Feb 2016 16:52:37 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aRRpH-0005Mv-Ip for qemu-devel@nongnu.org; Thu, 04 Feb 2016 16:52:32 -0500 Received: from mx1.redhat.com ([209.132.183.28]:58489) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aRRpH-0005Mr-Ap for qemu-devel@nongnu.org; Thu, 04 Feb 2016 16:52:31 -0500 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) by mx1.redhat.com (Postfix) with ESMTPS id DEC1FC0B7E0C; Thu, 4 Feb 2016 21:52:30 +0000 (UTC) Received: from redhat.com (vpn1-4-163.ams2.redhat.com [10.36.4.163]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u14LqREe015356; Thu, 4 Feb 2016 16:52:27 -0500 Date: Thu, 4 Feb 2016 23:52:26 +0200 From: "Michael S. Tsirkin" To: qemu-devel@nongnu.org Message-ID: <1454612376-7072-23-git-send-email-mst@redhat.com> References: <1454612376-7072-1-git-send-email-mst@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1454612376-7072-1-git-send-email-mst@redhat.com> X-Mutt-Fcc: =sent X-Scanned-By: MIMEDefang 2.68 on 10.5.11.22 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 209.132.183.28 Cc: Peter Maydell , Eduardo Habkost , Corey Minyard , =?us-ascii?B?PT9VVEYtOD9xP0M9QzM9QTlkcmljPTIwTGU9MjBHb2F0ZXI/PQ==?= , Marcel Apfelbaum , Greg Kurz Subject: [Qemu-devel] [PULL 22/49] ipmi: introduce a struct ipmi_sdr_compact X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Cédric Le Goater Currently, sdr attributes are identified using byte offsets and this can be a bit confusing. This patch adds a struct ipmi_sdr_compact conforming to the IPMI specs and replaces byte offsets with names. It also introduces and uses a struct ipmi_sdr_header in sections of the code where no assumption is made on the type of SDR. This leave rooms to potential usage of other types in the future. Signed-off-by: Cédric Le Goater Acked-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- include/hw/ipmi/ipmi.h | 45 +++++++++++++++++++++++++++++++ hw/ipmi/ipmi_bmc_sim.c | 72 ++++++++++++++++++++++++++++++-------------------- 2 files changed, 89 insertions(+), 28 deletions(-) diff --git a/include/hw/ipmi/ipmi.h b/include/hw/ipmi/ipmi.h index 32bac0f..74a2b5a 100644 --- a/include/hw/ipmi/ipmi.h +++ b/include/hw/ipmi/ipmi.h @@ -210,4 +210,49 @@ IPMIFwInfo *ipmi_next_fwinfo(IPMIFwInfo *current); #define ipmi_debug(fs, ...) #endif +struct ipmi_sdr_header { + uint8_t rec_id[2]; + uint8_t sdr_version; /* 0x51 */ + uint8_t rec_type; + uint8_t rec_length; +}; +#define IPMI_SDR_HEADER_SIZE sizeof(struct ipmi_sdr_header) + +#define ipmi_sdr_recid(sdr) ((sdr)->rec_id[0] | ((sdr)->rec_id[1] << 8)) +#define ipmi_sdr_length(sdr) ((sdr)->rec_length + IPMI_SDR_HEADER_SIZE) + +/* + * 43.2 SDR Type 02h. Compact Sensor Record + */ +#define IPMI_SDR_COMPACT_TYPE 2 + +struct ipmi_sdr_compact { + struct ipmi_sdr_header header; + + uint8_t sensor_owner_id; + uint8_t sensor_owner_lun; + uint8_t sensor_owner_number; /* byte 8 */ + uint8_t entity_id; + uint8_t entity_instance; + uint8_t sensor_init; + uint8_t sensor_caps; + uint8_t sensor_type; + uint8_t reading_type; + uint8_t assert_mask[2]; /* byte 16 */ + uint8_t deassert_mask[2]; + uint8_t discrete_mask[2]; + uint8_t sensor_unit1; + uint8_t sensor_unit2; + uint8_t sensor_unit3; + uint8_t sensor_direction[2]; /* byte 24 */ + uint8_t positive_threshold; + uint8_t negative_threshold; + uint8_t reserved[3]; + uint8_t oem; + uint8_t id_str_len; /* byte 32 */ + uint8_t id_string[16]; +}; + +typedef uint8_t ipmi_sdr_compact_buffer[sizeof(struct ipmi_sdr_compact)]; + #endif diff --git a/hw/ipmi/ipmi_bmc_sim.c b/hw/ipmi/ipmi_bmc_sim.c index 73a4f6a..84fbcd2 100644 --- a/hw/ipmi/ipmi_bmc_sim.c +++ b/hw/ipmi/ipmi_bmc_sim.c @@ -318,14 +318,18 @@ static void sdr_inc_reservation(IPMISdr *sdr) } } -static int sdr_add_entry(IPMIBmcSim *ibs, const uint8_t *entry, +static int sdr_add_entry(IPMIBmcSim *ibs, + const struct ipmi_sdr_header *sdrh_entry, unsigned int len, uint16_t *recid) { - if ((len < 5) || (len > 255)) { + struct ipmi_sdr_header *sdrh = + (struct ipmi_sdr_header *) &ibs->sdr.sdr[ibs->sdr.next_free]; + + if ((len < IPMI_SDR_HEADER_SIZE) || (len > 255)) { return 1; } - if (entry[4] != len - 5) { + if (ipmi_sdr_length(sdrh_entry) != len) { return 1; } @@ -334,10 +338,10 @@ static int sdr_add_entry(IPMIBmcSim *ibs, const uint8_t *entry, return 1; } - memcpy(ibs->sdr.sdr + ibs->sdr.next_free, entry, len); - ibs->sdr.sdr[ibs->sdr.next_free] = ibs->sdr.next_rec_id & 0xff; - ibs->sdr.sdr[ibs->sdr.next_free+1] = (ibs->sdr.next_rec_id >> 8) & 0xff; - ibs->sdr.sdr[ibs->sdr.next_free+2] = 0x51; /* Conform to IPMI 1.5 spec */ + memcpy(sdrh, sdrh_entry, len); + sdrh->rec_id[0] = ibs->sdr.next_rec_id & 0xff; + sdrh->rec_id[1] = (ibs->sdr.next_rec_id >> 8) & 0xff; + sdrh->sdr_version = 0x51; /* Conform to IPMI 1.5 spec */ if (recid) { *recid = ibs->sdr.next_rec_id; @@ -355,8 +359,10 @@ static int sdr_find_entry(IPMISdr *sdr, uint16_t recid, unsigned int pos = *retpos; while (pos < sdr->next_free) { - uint16_t trec = sdr->sdr[pos] | (sdr->sdr[pos + 1] << 8); - unsigned int nextpos = pos + sdr->sdr[pos + 4] + 5; + struct ipmi_sdr_header *sdrh = + (struct ipmi_sdr_header *) &sdr->sdr[pos]; + uint16_t trec = ipmi_sdr_recid(sdrh); + unsigned int nextpos = pos + ipmi_sdr_length(sdrh); if (trec == recid) { if (nextrec) { @@ -505,29 +511,32 @@ static void ipmi_init_sensors_from_sdrs(IPMIBmcSim *s) pos = 0; for (i = 0; !sdr_find_entry(&s->sdr, i, &pos, NULL); i++) { - uint8_t *sdr = s->sdr.sdr + pos; - unsigned int len = sdr[4]; + struct ipmi_sdr_compact *sdr = + (struct ipmi_sdr_compact *) &s->sdr.sdr[pos]; + unsigned int len = sdr->header.rec_length; if (len < 20) { continue; } - if ((sdr[3] < 1) || (sdr[3] > 2)) { + if (sdr->header.rec_type != IPMI_SDR_COMPACT_TYPE) { continue; /* Not a sensor SDR we set from */ } - if (sdr[7] > MAX_SENSORS) { + if (sdr->sensor_owner_number > MAX_SENSORS) { continue; } - sens = s->sensors + sdr[7]; + sens = s->sensors + sdr->sensor_owner_number; IPMI_SENSOR_SET_PRESENT(sens, 1); - IPMI_SENSOR_SET_SCAN_ON(sens, (sdr[10] >> 6) & 1); - IPMI_SENSOR_SET_EVENTS_ON(sens, (sdr[10] >> 5) & 1); - sens->assert_suppt = sdr[14] | (sdr[15] << 8); - sens->deassert_suppt = sdr[16] | (sdr[17] << 8); - sens->states_suppt = sdr[18] | (sdr[19] << 8); - sens->sensor_type = sdr[12]; - sens->evt_reading_type_code = sdr[13] & 0x7f; + IPMI_SENSOR_SET_SCAN_ON(sens, (sdr->sensor_init >> 6) & 1); + IPMI_SENSOR_SET_EVENTS_ON(sens, (sdr->sensor_init >> 5) & 1); + sens->assert_suppt = sdr->assert_mask[0] | (sdr->assert_mask[1] << 8); + sens->deassert_suppt = + sdr->deassert_mask[0] | (sdr->deassert_mask[1] << 8); + sens->states_suppt = + sdr->discrete_mask[0] | (sdr->discrete_mask[1] << 8); + sens->sensor_type = sdr->sensor_type; + sens->evt_reading_type_code = sdr->reading_type & 0x7f; /* Enable all the events that are supported. */ sens->assert_enable = sens->assert_suppt; @@ -1153,6 +1162,7 @@ static void get_sdr(IPMIBmcSim *ibs, { unsigned int pos; uint16_t nextrec; + struct ipmi_sdr_header *sdrh; IPMI_CHECK_CMD_LEN(8); if (cmd[6]) { @@ -1164,7 +1174,10 @@ static void get_sdr(IPMIBmcSim *ibs, rsp[2] = IPMI_CC_REQ_ENTRY_NOT_PRESENT; return; } - if (cmd[6] > (ibs->sdr.sdr[pos + 4] + 5)) { + + sdrh = (struct ipmi_sdr_header *) &ibs->sdr.sdr[pos]; + + if (cmd[6] > ipmi_sdr_length(sdrh)) { rsp[2] = IPMI_CC_PARM_OUT_OF_RANGE; return; } @@ -1173,7 +1186,7 @@ static void get_sdr(IPMIBmcSim *ibs, IPMI_ADD_RSP_DATA((nextrec >> 8) & 0xff); if (cmd[7] == 0xff) { - cmd[7] = ibs->sdr.sdr[pos + 4] + 5 - cmd[6]; + cmd[7] = ipmi_sdr_length(sdrh) - cmd[6]; } if ((cmd[7] + *rsp_len) > max_rsp_len) { @@ -1190,8 +1203,9 @@ static void add_sdr(IPMIBmcSim *ibs, unsigned int max_rsp_len) { uint16_t recid; + struct ipmi_sdr_header *sdrh = (struct ipmi_sdr_header *) cmd + 2; - if (sdr_add_entry(ibs, cmd + 2, cmd_len - 2, &recid)) { + if (sdr_add_entry(ibs, sdrh, cmd_len - 2, &recid)) { rsp[2] = IPMI_CC_INVALID_DATA_FIELD; return; } @@ -1642,13 +1656,15 @@ static void ipmi_sim_init(Object *obj) } for (i = 0;;) { + struct ipmi_sdr_header *sdrh; int len; - if ((i + 5) > sizeof(init_sdrs)) { + if ((i + IPMI_SDR_HEADER_SIZE) > sizeof(init_sdrs)) { error_report("Problem with recid 0x%4.4x", i); return; } - len = init_sdrs[i + 4] + 5; - recid = init_sdrs[i] | (init_sdrs[i + 1] << 8); + sdrh = (struct ipmi_sdr_header *) &init_sdrs[i]; + len = ipmi_sdr_length(sdrh); + recid = ipmi_sdr_recid(sdrh); if (recid == 0xffff) { break; } @@ -1656,7 +1672,7 @@ static void ipmi_sim_init(Object *obj) error_report("Problem with recid 0x%4.4x", i); return; } - sdr_add_entry(ibs, init_sdrs + i, len, NULL); + sdr_add_entry(ibs, sdrh, len, NULL); i += len; }