From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DB110CA9EAF for ; Thu, 24 Oct 2019 14:25:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B1E5C2070B for ; Thu, 24 Oct 2019 14:25:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2502818AbfJXOZI (ORCPT ); Thu, 24 Oct 2019 10:25:08 -0400 Received: from szxga07-in.huawei.com ([45.249.212.35]:32834 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1732393AbfJXOYy (ORCPT ); Thu, 24 Oct 2019 10:24:54 -0400 Received: from DGGEMS414-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 46566FB19A85F1FDF07C; Thu, 24 Oct 2019 22:24:50 +0800 (CST) Received: from localhost.localdomain (10.69.192.58) by DGGEMS414-HUB.china.huawei.com (10.3.19.214) with Microsoft SMTP Server id 14.3.439.0; Thu, 24 Oct 2019 22:24:41 +0800 From: John Garry To: , CC: , , , , , "John Garry" Subject: [PATCH 4/6] scsi: hisi_sas: Add slot_index_alloc_v3_hw() and slot_index_free_v3_hw() Date: Thu, 24 Oct 2019 22:21:19 +0800 Message-ID: <1571926881-75524-5-git-send-email-john.garry@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1571926881-75524-1-git-send-email-john.garry@huawei.com> References: <1571926881-75524-1-git-send-email-john.garry@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.69.192.58] X-CFilter-Loop: Reflected Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org We will want to make these non-generic in future. Signed-off-by: John Garry --- drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 27 ++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c index a46717efb870..497bbf6964f6 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c @@ -563,6 +563,31 @@ static int bitmaps_alloc_v3_hw(struct hisi_hba *hisi_hba) GFP_KERNEL, dev_to_node(hisi_hba->dev)); } +static int slot_index_alloc_v3_hw(struct hisi_hba *hisi_hba, + struct domain_device *device, + struct scsi_cmnd *scmd) +{ + struct sbitmap *slot_index_tags = &hisi_hba->slot_index_tags; + int index; + + if (scmd) + return scmd->request->tag; + + index = sbitmap_get(slot_index_tags, 0, false); + if (index == -1) + return index; + return index + HISI_SAS_UNRESERVED_IPTT; +} + +static void slot_index_free_v3_hw(struct hisi_hba *hisi_hba, int slot_idx) +{ + struct sbitmap *slot_index_tags = &hisi_hba->slot_index_tags; + + if (slot_idx >= HISI_SAS_UNRESERVED_IPTT) + sbitmap_clear_bit(slot_index_tags, + slot_idx - HISI_SAS_UNRESERVED_IPTT); +} + static void init_reg_v3_hw(struct hisi_hba *hisi_hba) { int i; @@ -3090,6 +3115,8 @@ static struct scsi_host_template sht_v3_hw = { static const struct hisi_sas_hw hisi_sas_v3_hw = { .hw_init = hisi_sas_v3_init, .setup_itct = setup_itct_v3_hw, + .slot_index_alloc = slot_index_alloc_v3_hw, + .slot_index_free = slot_index_free_v3_hw, .bitmaps_alloc = bitmaps_alloc_v3_hw, .get_wideport_bitmap = get_wideport_bitmap_v3_hw, .complete_hdr_size = sizeof(struct hisi_sas_complete_v3_hdr), -- 2.17.1