From e09b41010ba33a20a87472ee821fa407a5b8da36 Mon Sep 17 00:00:00 2001 From: José Pekkarinen Date: Mon, 11 Apr 2016 10:41:07 +0300 Subject: These changes are the raw update to linux-4.4.6-rt14. Kernel sources are taken from kernel.org, and rt patch from the rt wiki download page. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen --- kernel/drivers/scsi/snic/vnic_cq_fw.h | 62 +++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 kernel/drivers/scsi/snic/vnic_cq_fw.h (limited to 'kernel/drivers/scsi/snic/vnic_cq_fw.h') diff --git a/kernel/drivers/scsi/snic/vnic_cq_fw.h b/kernel/drivers/scsi/snic/vnic_cq_fw.h new file mode 100644 index 000000000..c2d1bbd44 --- /dev/null +++ b/kernel/drivers/scsi/snic/vnic_cq_fw.h @@ -0,0 +1,62 @@ +/* + * Copyright 2014 Cisco Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#ifndef _VNIC_CQ_FW_H_ +#define _VNIC_CQ_FW_H_ + +#include "snic_fwint.h" + +static inline unsigned int +vnic_cq_fw_service(struct vnic_cq *cq, + int (*q_service)(struct vnic_dev *vdev, + unsigned int index, + struct snic_fw_req *desc), + unsigned int work_to_do) + +{ + struct snic_fw_req *desc; + unsigned int work_done = 0; + u8 color; + + desc = (struct snic_fw_req *)((u8 *)cq->ring.descs + + cq->ring.desc_size * cq->to_clean); + snic_color_dec(desc, &color); + + while (color != cq->last_color) { + + if ((*q_service)(cq->vdev, cq->index, desc)) + break; + + cq->to_clean++; + if (cq->to_clean == cq->ring.desc_count) { + cq->to_clean = 0; + cq->last_color = cq->last_color ? 0 : 1; + } + + desc = (struct snic_fw_req *)((u8 *)cq->ring.descs + + cq->ring.desc_size * cq->to_clean); + snic_color_dec(desc, &color); + + work_done++; + if (work_done >= work_to_do) + break; + } + + return work_done; +} + +#endif /* _VNIC_CQ_FW_H_ */ -- cgit 1.2.3-korg