diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/scsi/snic/vnic_cq.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/scsi/snic/vnic_cq.c')
-rw-r--r-- | drivers/scsi/snic/vnic_cq.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/drivers/scsi/snic/vnic_cq.c b/drivers/scsi/snic/vnic_cq.c new file mode 100644 index 000000000..0d5d3bd4b --- /dev/null +++ b/drivers/scsi/snic/vnic_cq.c @@ -0,0 +1,66 @@ +// SPDX-License-Identifier: GPL-2.0-only +// Copyright 2014 Cisco Systems, Inc. All rights reserved. + +#include <linux/errno.h> +#include <linux/types.h> +#include <linux/pci.h> +#include "vnic_dev.h" +#include "vnic_cq.h" + +void svnic_cq_free(struct vnic_cq *cq) +{ + svnic_dev_free_desc_ring(cq->vdev, &cq->ring); + + cq->ctrl = NULL; +} + +int svnic_cq_alloc(struct vnic_dev *vdev, struct vnic_cq *cq, + unsigned int index, unsigned int desc_count, unsigned int desc_size) +{ + cq->index = index; + cq->vdev = vdev; + + cq->ctrl = svnic_dev_get_res(vdev, RES_TYPE_CQ, index); + if (!cq->ctrl) { + pr_err("Failed to hook CQ[%d] resource\n", index); + + return -EINVAL; + } + + return svnic_dev_alloc_desc_ring(vdev, &cq->ring, desc_count, desc_size); +} + +void svnic_cq_init(struct vnic_cq *cq, unsigned int flow_control_enable, + unsigned int color_enable, unsigned int cq_head, unsigned int cq_tail, + unsigned int cq_tail_color, unsigned int interrupt_enable, + unsigned int cq_entry_enable, unsigned int cq_message_enable, + unsigned int interrupt_offset, u64 cq_message_addr) +{ + u64 paddr; + + paddr = (u64)cq->ring.base_addr | VNIC_PADDR_TARGET; + writeq(paddr, &cq->ctrl->ring_base); + iowrite32(cq->ring.desc_count, &cq->ctrl->ring_size); + iowrite32(flow_control_enable, &cq->ctrl->flow_control_enable); + iowrite32(color_enable, &cq->ctrl->color_enable); + iowrite32(cq_head, &cq->ctrl->cq_head); + iowrite32(cq_tail, &cq->ctrl->cq_tail); + iowrite32(cq_tail_color, &cq->ctrl->cq_tail_color); + iowrite32(interrupt_enable, &cq->ctrl->interrupt_enable); + iowrite32(cq_entry_enable, &cq->ctrl->cq_entry_enable); + iowrite32(cq_message_enable, &cq->ctrl->cq_message_enable); + iowrite32(interrupt_offset, &cq->ctrl->interrupt_offset); + writeq(cq_message_addr, &cq->ctrl->cq_message_addr); +} + +void svnic_cq_clean(struct vnic_cq *cq) +{ + cq->to_clean = 0; + cq->last_color = 0; + + iowrite32(0, &cq->ctrl->cq_head); + iowrite32(0, &cq->ctrl->cq_tail); + iowrite32(1, &cq->ctrl->cq_tail_color); + + svnic_dev_clear_desc_ring(&cq->ring); +} |