^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) #ifndef _VNIC_INTR_H_
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define _VNIC_INTR_H_
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/pci.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include "vnic_dev.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define VNIC_INTR_TIMER_MAX 0xffff
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define VNIC_INTR_TIMER_TYPE_ABS 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define VNIC_INTR_TIMER_TYPE_QUIET 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) /* Interrupt control */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) struct vnic_intr_ctrl {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) u32 coalescing_timer; /* 0x00 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) u32 pad0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) u32 coalescing_value; /* 0x08 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) u32 pad1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) u32 coalescing_type; /* 0x10 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) u32 pad2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) u32 mask_on_assertion; /* 0x18 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) u32 pad3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) u32 mask; /* 0x20 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) u32 pad4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) u32 int_credits; /* 0x28 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) u32 pad5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) u32 int_credit_return; /* 0x30 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) u32 pad6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) struct vnic_intr {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) unsigned int index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) struct vnic_dev *vdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) struct vnic_intr_ctrl __iomem *ctrl; /* memory-mapped */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) svnic_intr_unmask(struct vnic_intr *intr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) iowrite32(0, &intr->ctrl->mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) svnic_intr_mask(struct vnic_intr *intr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) iowrite32(1, &intr->ctrl->mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) svnic_intr_return_credits(struct vnic_intr *intr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) unsigned int credits,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) int unmask,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) int reset_timer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) #define VNIC_INTR_UNMASK_SHIFT 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) #define VNIC_INTR_RESET_TIMER_SHIFT 17
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) u32 int_credit_return = (credits & 0xffff) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) (unmask ? (1 << VNIC_INTR_UNMASK_SHIFT) : 0) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) (reset_timer ? (1 << VNIC_INTR_RESET_TIMER_SHIFT) : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) iowrite32(int_credit_return, &intr->ctrl->int_credit_return);
^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) static inline unsigned int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) svnic_intr_credits(struct vnic_intr *intr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) return ioread32(&intr->ctrl->int_credits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) svnic_intr_return_all_credits(struct vnic_intr *intr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) unsigned int credits = svnic_intr_credits(intr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) int unmask = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) int reset_timer = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) svnic_intr_return_credits(intr, credits, unmask, reset_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) void svnic_intr_free(struct vnic_intr *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) int svnic_intr_alloc(struct vnic_dev *, struct vnic_intr *, unsigned int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) void svnic_intr_init(struct vnic_intr *intr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) unsigned int coalescing_timer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) unsigned int coalescing_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) unsigned int mask_on_assertion);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) void svnic_intr_clean(struct vnic_intr *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) #endif /* _VNIC_INTR_H_ */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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