This source file includes following definitions.
- svnic_intr_unmask
- svnic_intr_mask
- svnic_intr_return_credits
- svnic_intr_credits
- svnic_intr_return_all_credits
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18 #ifndef _VNIC_INTR_H_
19 #define _VNIC_INTR_H_
20
21 #include <linux/pci.h>
22 #include "vnic_dev.h"
23
24 #define VNIC_INTR_TIMER_MAX 0xffff
25
26 #define VNIC_INTR_TIMER_TYPE_ABS 0
27 #define VNIC_INTR_TIMER_TYPE_QUIET 1
28
29
30 struct vnic_intr_ctrl {
31 u32 coalescing_timer;
32 u32 pad0;
33 u32 coalescing_value;
34 u32 pad1;
35 u32 coalescing_type;
36 u32 pad2;
37 u32 mask_on_assertion;
38 u32 pad3;
39 u32 mask;
40 u32 pad4;
41 u32 int_credits;
42 u32 pad5;
43 u32 int_credit_return;
44 u32 pad6;
45 };
46
47 struct vnic_intr {
48 unsigned int index;
49 struct vnic_dev *vdev;
50 struct vnic_intr_ctrl __iomem *ctrl;
51 };
52
53 static inline void
54 svnic_intr_unmask(struct vnic_intr *intr)
55 {
56 iowrite32(0, &intr->ctrl->mask);
57 }
58
59 static inline void
60 svnic_intr_mask(struct vnic_intr *intr)
61 {
62 iowrite32(1, &intr->ctrl->mask);
63 }
64
65 static inline void
66 svnic_intr_return_credits(struct vnic_intr *intr,
67 unsigned int credits,
68 int unmask,
69 int reset_timer)
70 {
71 #define VNIC_INTR_UNMASK_SHIFT 16
72 #define VNIC_INTR_RESET_TIMER_SHIFT 17
73
74 u32 int_credit_return = (credits & 0xffff) |
75 (unmask ? (1 << VNIC_INTR_UNMASK_SHIFT) : 0) |
76 (reset_timer ? (1 << VNIC_INTR_RESET_TIMER_SHIFT) : 0);
77
78 iowrite32(int_credit_return, &intr->ctrl->int_credit_return);
79 }
80
81 static inline unsigned int
82 svnic_intr_credits(struct vnic_intr *intr)
83 {
84 return ioread32(&intr->ctrl->int_credits);
85 }
86
87 static inline void
88 svnic_intr_return_all_credits(struct vnic_intr *intr)
89 {
90 unsigned int credits = svnic_intr_credits(intr);
91 int unmask = 1;
92 int reset_timer = 1;
93
94 svnic_intr_return_credits(intr, credits, unmask, reset_timer);
95 }
96
97 void svnic_intr_free(struct vnic_intr *);
98 int svnic_intr_alloc(struct vnic_dev *, struct vnic_intr *, unsigned int);
99 void svnic_intr_init(struct vnic_intr *intr,
100 unsigned int coalescing_timer,
101 unsigned int coalescing_type,
102 unsigned int mask_on_assertion);
103 void svnic_intr_clean(struct vnic_intr *);
104
105 #endif