net/bnxt: log firmware debug notifications
[dpdk.git] / drivers / net / enic / base / vnic_intr.h
1 /* SPDX-License-Identifier: BSD-3-Clause
2  * Copyright 2008-2017 Cisco Systems, Inc.  All rights reserved.
3  * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
4  */
5
6 #ifndef _VNIC_INTR_H_
7 #define _VNIC_INTR_H_
8
9
10 #include "vnic_dev.h"
11
12 #define VNIC_INTR_TIMER_TYPE_ABS        0
13 #define VNIC_INTR_TIMER_TYPE_QUIET      1
14
15 /* Interrupt control */
16 struct vnic_intr_ctrl {
17         uint32_t coalescing_timer;              /* 0x00 */
18         uint32_t pad0;
19         uint32_t coalescing_value;              /* 0x08 */
20         uint32_t pad1;
21         uint32_t coalescing_type;               /* 0x10 */
22         uint32_t pad2;
23         uint32_t mask_on_assertion;             /* 0x18 */
24         uint32_t pad3;
25         uint32_t mask;                          /* 0x20 */
26         uint32_t pad4;
27         uint32_t int_credits;                   /* 0x28 */
28         uint32_t pad5;
29         uint32_t int_credit_return;             /* 0x30 */
30         uint32_t pad6;
31 };
32
33 struct vnic_intr {
34         unsigned int index;
35         struct vnic_dev *vdev;
36         struct vnic_intr_ctrl __iomem *ctrl;            /* memory-mapped */
37 };
38
39 static inline void vnic_intr_unmask(struct vnic_intr *intr)
40 {
41         iowrite32(0, &intr->ctrl->mask);
42 }
43
44 static inline void vnic_intr_mask(struct vnic_intr *intr)
45 {
46         iowrite32(1, &intr->ctrl->mask);
47 }
48
49 static inline int vnic_intr_masked(struct vnic_intr *intr)
50 {
51         return ioread32(&intr->ctrl->mask);
52 }
53
54 static inline void vnic_intr_return_credits(struct vnic_intr *intr,
55         unsigned int credits, int unmask, int reset_timer)
56 {
57 #define VNIC_INTR_UNMASK_SHIFT          16
58 #define VNIC_INTR_RESET_TIMER_SHIFT     17
59
60         uint32_t int_credit_return = (credits & 0xffff) |
61                 (unmask ? (1 << VNIC_INTR_UNMASK_SHIFT) : 0) |
62                 (reset_timer ? (1 << VNIC_INTR_RESET_TIMER_SHIFT) : 0);
63
64         iowrite32(int_credit_return, &intr->ctrl->int_credit_return);
65 }
66
67 static inline unsigned int vnic_intr_credits(struct vnic_intr *intr)
68 {
69         return ioread32(&intr->ctrl->int_credits);
70 }
71
72 static inline void vnic_intr_return_all_credits(struct vnic_intr *intr)
73 {
74         unsigned int credits = vnic_intr_credits(intr);
75         int unmask = 1;
76         int reset_timer = 1;
77
78         vnic_intr_return_credits(intr, credits, unmask, reset_timer);
79 }
80
81 static inline uint32_t vnic_intr_legacy_pba(uint32_t __iomem *legacy_pba)
82 {
83         /* read PBA without clearing */
84         return ioread32(legacy_pba);
85 }
86
87 void vnic_intr_free(struct vnic_intr *intr);
88 int vnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr,
89         unsigned int index);
90 void vnic_intr_init(struct vnic_intr *intr, uint32_t coalescing_timer,
91         unsigned int coalescing_type, unsigned int mask_on_assertion);
92 void vnic_intr_coalescing_timer_set(struct vnic_intr *intr,
93         uint32_t coalescing_timer);
94 void vnic_intr_clean(struct vnic_intr *intr);
95
96 #endif /* _VNIC_INTR_H_ */