^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * Copyright 2014 Cisco Systems, Inc. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * This program is free software; you may redistribute it and/or modify
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * it under the terms of the GNU General Public License as published by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * the Free Software Foundation; version 2 of the License.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * SOFTWARE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/pci.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include "vnic_dev.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include "vnic_wq.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) static inline int vnic_wq_get_ctrl(struct vnic_dev *vdev, struct vnic_wq *wq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) unsigned int index, enum vnic_res_type res_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) wq->ctrl = svnic_dev_get_res(vdev, res_type, index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) if (!wq->ctrl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) static inline int vnic_wq_alloc_ring(struct vnic_dev *vdev, struct vnic_wq *wq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) unsigned int index, unsigned int desc_count, unsigned int desc_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) return svnic_dev_alloc_desc_ring(vdev, &wq->ring, desc_count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) desc_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) static int vnic_wq_alloc_bufs(struct vnic_wq *wq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) struct vnic_wq_buf *buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) unsigned int i, j, count = wq->ring.desc_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) unsigned int blks = VNIC_WQ_BUF_BLKS_NEEDED(count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) for (i = 0; i < blks; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) wq->bufs[i] = kzalloc(VNIC_WQ_BUF_BLK_SZ, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) if (!wq->bufs[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) pr_err("Failed to alloc wq_bufs\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) for (i = 0; i < blks; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) buf = wq->bufs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) for (j = 0; j < VNIC_WQ_BUF_DFLT_BLK_ENTRIES; j++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) buf->index = i * VNIC_WQ_BUF_DFLT_BLK_ENTRIES + j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) buf->desc = (u8 *)wq->ring.descs +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) wq->ring.desc_size * buf->index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) if (buf->index + 1 == count) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) buf->next = wq->bufs[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) } else if (j + 1 == VNIC_WQ_BUF_DFLT_BLK_ENTRIES) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) buf->next = wq->bufs[i + 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) buf->next = buf + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) buf++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) wq->to_use = wq->to_clean = wq->bufs[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) void svnic_wq_free(struct vnic_wq *wq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) struct vnic_dev *vdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) vdev = wq->vdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) svnic_dev_free_desc_ring(vdev, &wq->ring);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) for (i = 0; i < VNIC_WQ_BUF_BLKS_MAX; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) kfree(wq->bufs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) wq->bufs[i] = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) wq->ctrl = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) int vnic_wq_devcmd2_alloc(struct vnic_dev *vdev, struct vnic_wq *wq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) unsigned int desc_count, unsigned int desc_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) wq->index = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) wq->vdev = vdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) err = vnic_wq_get_ctrl(vdev, wq, 0, RES_TYPE_DEVCMD2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) pr_err("Failed to get devcmd2 resource\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) svnic_wq_disable(wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) err = vnic_wq_alloc_ring(vdev, wq, 0, desc_count, desc_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) int svnic_wq_alloc(struct vnic_dev *vdev, struct vnic_wq *wq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) unsigned int index, unsigned int desc_count, unsigned int desc_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) wq->index = index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) wq->vdev = vdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) err = vnic_wq_get_ctrl(vdev, wq, index, RES_TYPE_WQ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) pr_err("Failed to hook WQ[%d] resource\n", index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) svnic_wq_disable(wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) err = vnic_wq_alloc_ring(vdev, wq, index, desc_count, desc_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) err = vnic_wq_alloc_bufs(wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) svnic_wq_free(wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) void vnic_wq_init_start(struct vnic_wq *wq, unsigned int cq_index,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) unsigned int fetch_index, unsigned int posted_index,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) unsigned int error_interrupt_enable,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) unsigned int error_interrupt_offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) u64 paddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) unsigned int count = wq->ring.desc_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) paddr = (u64)wq->ring.base_addr | VNIC_PADDR_TARGET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) writeq(paddr, &wq->ctrl->ring_base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) iowrite32(count, &wq->ctrl->ring_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) iowrite32(fetch_index, &wq->ctrl->fetch_index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) iowrite32(posted_index, &wq->ctrl->posted_index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) iowrite32(cq_index, &wq->ctrl->cq_index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) iowrite32(error_interrupt_enable, &wq->ctrl->error_interrupt_enable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) iowrite32(error_interrupt_offset, &wq->ctrl->error_interrupt_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) iowrite32(0, &wq->ctrl->error_status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) wq->to_use = wq->to_clean =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) &wq->bufs[fetch_index / VNIC_WQ_BUF_BLK_ENTRIES(count)]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) [fetch_index % VNIC_WQ_BUF_BLK_ENTRIES(count)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) void svnic_wq_init(struct vnic_wq *wq, unsigned int cq_index,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) unsigned int error_interrupt_enable,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) unsigned int error_interrupt_offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) vnic_wq_init_start(wq, cq_index, 0, 0, error_interrupt_enable,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) error_interrupt_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) unsigned int svnic_wq_error_status(struct vnic_wq *wq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) return ioread32(&wq->ctrl->error_status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) void svnic_wq_enable(struct vnic_wq *wq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) iowrite32(1, &wq->ctrl->enable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) int svnic_wq_disable(struct vnic_wq *wq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) unsigned int wait;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) iowrite32(0, &wq->ctrl->enable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) /* Wait for HW to ACK disable request */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) for (wait = 0; wait < 100; wait++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) if (!(ioread32(&wq->ctrl->running)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) udelay(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) pr_err("Failed to disable WQ[%d]\n", wq->index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) return -ETIMEDOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) void svnic_wq_clean(struct vnic_wq *wq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) void (*buf_clean)(struct vnic_wq *wq, struct vnic_wq_buf *buf))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) struct vnic_wq_buf *buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) BUG_ON(ioread32(&wq->ctrl->enable));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) buf = wq->to_clean;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) while (svnic_wq_desc_used(wq) > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) (*buf_clean)(wq, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) buf = wq->to_clean = buf->next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) wq->ring.desc_avail++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) wq->to_use = wq->to_clean = wq->bufs[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) iowrite32(0, &wq->ctrl->fetch_index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) iowrite32(0, &wq->ctrl->posted_index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) iowrite32(0, &wq->ctrl->error_status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) svnic_dev_clear_desc_ring(&wq->ring);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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