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Thu, 26 Nov 2020 01:48:30 +0000 (GMT) Received: from vios4361.aus.stglabs.ibm.com (unknown [9.3.43.61]) by b03ledav001.gho.boulder.ibm.com (Postfix) with ESMTP; Thu, 26 Nov 2020 01:48:30 +0000 (GMT) From: Tyrel Datwyler To: james.bottomley@hansenpartnership.com Subject: [PATCH 03/13] ibmvfc: add Subordinate CRQ definitions Date: Wed, 25 Nov 2020 19:48:14 -0600 Message-Id: <20201126014824.123831-4-tyreld@linux.ibm.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20201126014824.123831-1-tyreld@linux.ibm.com> References: <20201126014824.123831-1-tyreld@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.312, 18.0.737 definitions=2020-11-25_14:2020-11-25, 2020-11-25 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 phishscore=0 lowpriorityscore=0 priorityscore=1501 malwarescore=0 impostorscore=0 bulkscore=0 suspectscore=1 adultscore=0 spamscore=0 mlxlogscore=999 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2011260001 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Tyrel Datwyler , martin.petersen@oracle.com, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, brking@linux.ibm.com, linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Subordinate Command Response Queues (Sub CRQ) are used in conjunction with the primary CRQ when more than one queue is needed by the virtual IO adapter. Recent phyp firmware versions support Sub CRQ's with ibmvfc adapters. This feature is a prerequisite for supporting multiple hardware backed submission queues in the vfc adapter. The Sub CRQ command element differs from the standard CRQ in that it is 32bytes long as opposed to 16bytes for the latter. Despite this extra 16bytes the ibmvfc protocol will use the original CRQ command element mapped to the first 16bytes of the Sub CRQ element initially. Add definitions for the Sub CRQ command element and queue. Signed-off-by: Tyrel Datwyler --- drivers/scsi/ibmvscsi/ibmvfc.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/scsi/ibmvscsi/ibmvfc.h b/drivers/scsi/ibmvscsi/ibmvfc.h index 8225bdbb127e..084ecdfe51ea 100644 --- a/drivers/scsi/ibmvscsi/ibmvfc.h +++ b/drivers/scsi/ibmvscsi/ibmvfc.h @@ -656,6 +656,29 @@ struct ibmvfc_crq_queue { dma_addr_t msg_token; }; +struct ibmvfc_sub_crq { + struct ibmvfc_crq crq; + __be64 reserved[2]; +} __packed __aligned(8); + +struct ibmvfc_sub_queue { + struct ibmvfc_sub_crq *msgs; + dma_addr_t msg_token; + int size, cur; + struct ibmvfc_host *vhost; + unsigned long cookie; + unsigned long vios_cookie; + unsigned long hw_irq; + unsigned long irq; + unsigned long hwq_id; + char name[32]; +}; + +struct ibmvfc_scsi_channels { + struct ibmvfc_sub_queue *scrqs; + unsigned int active_queues; +}; + enum ibmvfc_ae_link_state { IBMVFC_AE_LS_LINK_UP = 0x01, IBMVFC_AE_LS_LINK_BOUNCED = 0x02, -- 2.27.0