1 /* SPDX-License-Identifier: BSD-3-Clause
2  * Copyright 2008-2017 Cisco Systems, Inc.  All rights reserved.
11     struct vnic_dev_ring *ring, unsigned int desc_count, unsigned int desc_size)  in vnic_dev_alloc_desc_ring()  argument
23 	err = iflib_dma_alloc(vdev->softc->ctx, desc_count * desc_size,  in vnic_dev_alloc_desc_ring()
32 	ring->base_addr = ifdip->idi_paddr;  in vnic_dev_alloc_desc_ring()
33 	ring->descs = ifdip->idi_vaddr;  in vnic_dev_alloc_desc_ring()
34 	ring->ifdip = ifdip;  in vnic_dev_alloc_desc_ring()
35 	ring->desc_size = desc_size;  in vnic_dev_alloc_desc_ring()
36 	ring->desc_count = desc_count;  in vnic_dev_alloc_desc_ring()
37 	ring->last_count = 0;  in vnic_dev_alloc_desc_ring()
38 	ring->desc_avail = ring->desc_count - 1;  in vnic_dev_alloc_desc_ring()
40 	ring->base_align = 512;  in vnic_dev_alloc_desc_ring()
41 	ring->size_unaligned = ring->desc_count * ring->desc_size \  in vnic_dev_alloc_desc_ring()
42 	    + ring->base_align;  in vnic_dev_alloc_desc_ring()
53 void vnic_dev_free_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring)  in vnic_dev_free_desc_ring()  argument
55 	if (ring && ring->descs) {  in vnic_dev_free_desc_ring()
56 		iflib_dma_free(ring->ifdip);  in vnic_dev_free_desc_ring()
57 		free(ring->ifdip, M_DEVBUF);  in vnic_dev_free_desc_ring()
58 		ring->descs = NULL;  in vnic_dev_free_desc_ring()
63 	vnic_dev_free_desc_ring(wq->vdev, &wq->ring);  in vnic_wq_free()
64 	wq->ctrl = NULL;  in vnic_wq_free()
72 	wq->index = 0;  in enic_wq_devcmd2_alloc()
73 	wq->vdev = vdev;  in enic_wq_devcmd2_alloc()
76 	wq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_DEVCMD2, 0);  in enic_wq_devcmd2_alloc()
77 	if (!wq->ctrl)  in enic_wq_devcmd2_alloc()
80 	err = vnic_dev_alloc_desc_ring(vdev, &wq->ring, desc_count, desc_size);  in enic_wq_devcmd2_alloc()
87 	if (vdev->devcmd2) {  in vnic_dev_deinit_devcmd2()
88 		vnic_wq_disable(&vdev->devcmd2->wq);  in vnic_dev_deinit_devcmd2()
89 		if (vdev->devcmd2->wq_ctrl)  in vnic_dev_deinit_devcmd2()
90 			vnic_wq_free(&vdev->devcmd2->wq);  in vnic_dev_deinit_devcmd2()
91 		if (vdev->devcmd2->result)  in vnic_dev_deinit_devcmd2()
92 			vnic_dev_free_desc_ring(vdev, &vdev->devcmd2->results_ring);  in vnic_dev_deinit_devcmd2()
93 		free(vdev->devcmd2, M_DEVBUF);  in vnic_dev_deinit_devcmd2()
94 		vdev->devcmd2 = NULL;  in vnic_dev_deinit_devcmd2()
112 	unsigned int count = wq->ring.desc_count;  in enic_wq_init_start()
114 	paddr = (u64)wq->ring.base_addr | VNIC_PADDR_TARGET;  in enic_wq_init_start()
115 	ENIC_BUS_WRITE_8(wq->ctrl, TX_RING_BASE, paddr);  in enic_wq_init_start()
116 	ENIC_BUS_WRITE_4(wq->ctrl, TX_RING_SIZE, count);  in enic_wq_init_start()
117 	ENIC_BUS_WRITE_4(wq->ctrl, TX_FETCH_INDEX, fetch_index);  in enic_wq_init_start()
118 	ENIC_BUS_WRITE_4(wq->ctrl, TX_POSTED_INDEX, posted_index);  in enic_wq_init_start()
119 	ENIC_BUS_WRITE_4(wq->ctrl, TX_CQ_INDEX, cq_index);  in enic_wq_init_start()
120 	ENIC_BUS_WRITE_4(wq->ctrl, TX_ERROR_INTR_ENABLE, error_interrupt_enable);  in enic_wq_init_start()
121 	ENIC_BUS_WRITE_4(wq->ctrl, TX_ERROR_INTR_OFFSET, error_interrupt_offset);  in enic_wq_init_start()
122 	ENIC_BUS_WRITE_4(wq->ctrl, TX_ERROR_STATUS, 0);  in enic_wq_init_start()
124 	wq->head_idx = fetch_index;  in enic_wq_init_start()
125 	wq->tail_idx = wq->head_idx;  in enic_wq_init_start()
135 	wq->cq_pend = 0;  in vnic_wq_init()
136 	wq->last_completed_index = 0;  in vnic_wq_init()
141 	return (ENIC_BUS_READ_4(wq->ctrl, TX_ERROR_STATUS));  in vnic_wq_error_status()
146 	ENIC_BUS_WRITE_4(wq->ctrl, TX_ENABLE, 1);  in vnic_wq_enable()
153 	ENIC_BUS_WRITE_4(wq->ctrl, TX_ENABLE, 0);  in vnic_wq_disable()
157 		if (!(ENIC_BUS_READ_4(wq->ctrl, TX_RUNNING)))  in vnic_wq_disable()
162 	pr_err("Failed to disable WQ[%d]\n", wq->index);  in vnic_wq_disable()
169 	unsigned int  to_clean = wq->tail_idx;  in vnic_wq_clean()
172 		to_clean = buf_idx_incr(wq->ring.desc_count, to_clean);  in vnic_wq_clean()
173 		wq->ring.desc_avail++;  in vnic_wq_clean()
176 	wq->head_idx = 0;  in vnic_wq_clean()
177 	wq->tail_idx = 0;  in vnic_wq_clean()
178 	wq->last_completed_index = 0;  in vnic_wq_clean()
180 	ENIC_BUS_WRITE_4(wq->ctrl, TX_FETCH_INDEX, 0);  in vnic_wq_clean()
181 	ENIC_BUS_WRITE_4(wq->ctrl, TX_POSTED_INDEX, 0);  in vnic_wq_clean()
182 	ENIC_BUS_WRITE_4(wq->ctrl, TX_ERROR_STATUS, 0);  in vnic_wq_clean()