projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 11fdf7f2 TL |
1 | /* SPDX-License-Identifier: BSD-3-Clause |
| 2 | * Copyright 2008-2017 Cisco Systems, Inc. All rights reserved. | |
| 7c673cae | 3 | * Copyright 2007 Nuova Systems, Inc. All rights reserved. |
| 7c673cae FG |
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 | u32 coalescing_timer; /* 0x00 */ | |
| 18 | u32 pad0; | |
| 19 | u32 coalescing_value; /* 0x08 */ | |
| 20 | u32 pad1; | |
| 21 | u32 coalescing_type; /* 0x10 */ | |
| 22 | u32 pad2; | |
| 23 | u32 mask_on_assertion; /* 0x18 */ | |
| 24 | u32 pad3; | |
| 25 | u32 mask; /* 0x20 */ | |
| 26 | u32 pad4; | |
| 27 | u32 int_credits; /* 0x28 */ | |
| 28 | u32 pad5; | |
| 29 | u32 int_credit_return; /* 0x30 */ | |
| 30 | u32 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 | u32 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 u32 vnic_intr_legacy_pba(u32 __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, u32 coalescing_timer, | |
| 91 | unsigned int coalescing_type, unsigned int mask_on_assertion); | |
| 92 | void vnic_intr_coalescing_timer_set(struct vnic_intr *intr, | |
| 93 | u32 coalescing_timer); | |
| 94 | void vnic_intr_clean(struct vnic_intr *intr); | |
| 95 | ||
| 96 | #endif /* _VNIC_INTR_H_ */ |