mirror of https://github.com/F-Stack/f-stack.git
97 lines
2.5 KiB
C
97 lines
2.5 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
|
|
* Copyright 2008-2017 Cisco Systems, Inc. All rights reserved.
|
|
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
|
*/
|
|
|
|
#ifndef _VNIC_INTR_H_
|
|
#define _VNIC_INTR_H_
|
|
|
|
|
|
#include "vnic_dev.h"
|
|
|
|
#define VNIC_INTR_TIMER_TYPE_ABS 0
|
|
#define VNIC_INTR_TIMER_TYPE_QUIET 1
|
|
|
|
/* Interrupt control */
|
|
struct vnic_intr_ctrl {
|
|
uint32_t coalescing_timer; /* 0x00 */
|
|
uint32_t pad0;
|
|
uint32_t coalescing_value; /* 0x08 */
|
|
uint32_t pad1;
|
|
uint32_t coalescing_type; /* 0x10 */
|
|
uint32_t pad2;
|
|
uint32_t mask_on_assertion; /* 0x18 */
|
|
uint32_t pad3;
|
|
uint32_t mask; /* 0x20 */
|
|
uint32_t pad4;
|
|
uint32_t int_credits; /* 0x28 */
|
|
uint32_t pad5;
|
|
uint32_t int_credit_return; /* 0x30 */
|
|
uint32_t pad6;
|
|
};
|
|
|
|
struct vnic_intr {
|
|
unsigned int index;
|
|
struct vnic_dev *vdev;
|
|
struct vnic_intr_ctrl __iomem *ctrl; /* memory-mapped */
|
|
};
|
|
|
|
static inline void vnic_intr_unmask(struct vnic_intr *intr)
|
|
{
|
|
iowrite32(0, &intr->ctrl->mask);
|
|
}
|
|
|
|
static inline void vnic_intr_mask(struct vnic_intr *intr)
|
|
{
|
|
iowrite32(1, &intr->ctrl->mask);
|
|
}
|
|
|
|
static inline int vnic_intr_masked(struct vnic_intr *intr)
|
|
{
|
|
return ioread32(&intr->ctrl->mask);
|
|
}
|
|
|
|
static inline void vnic_intr_return_credits(struct vnic_intr *intr,
|
|
unsigned int credits, int unmask, int reset_timer)
|
|
{
|
|
#define VNIC_INTR_UNMASK_SHIFT 16
|
|
#define VNIC_INTR_RESET_TIMER_SHIFT 17
|
|
|
|
uint32_t int_credit_return = (credits & 0xffff) |
|
|
(unmask ? (1 << VNIC_INTR_UNMASK_SHIFT) : 0) |
|
|
(reset_timer ? (1 << VNIC_INTR_RESET_TIMER_SHIFT) : 0);
|
|
|
|
iowrite32(int_credit_return, &intr->ctrl->int_credit_return);
|
|
}
|
|
|
|
static inline unsigned int vnic_intr_credits(struct vnic_intr *intr)
|
|
{
|
|
return ioread32(&intr->ctrl->int_credits);
|
|
}
|
|
|
|
static inline void vnic_intr_return_all_credits(struct vnic_intr *intr)
|
|
{
|
|
unsigned int credits = vnic_intr_credits(intr);
|
|
int unmask = 1;
|
|
int reset_timer = 1;
|
|
|
|
vnic_intr_return_credits(intr, credits, unmask, reset_timer);
|
|
}
|
|
|
|
static inline uint32_t vnic_intr_legacy_pba(uint32_t __iomem *legacy_pba)
|
|
{
|
|
/* read PBA without clearing */
|
|
return ioread32(legacy_pba);
|
|
}
|
|
|
|
void vnic_intr_free(struct vnic_intr *intr);
|
|
int vnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr,
|
|
unsigned int index);
|
|
void vnic_intr_init(struct vnic_intr *intr, uint32_t coalescing_timer,
|
|
unsigned int coalescing_type, unsigned int mask_on_assertion);
|
|
void vnic_intr_coalescing_timer_set(struct vnic_intr *intr,
|
|
uint32_t coalescing_timer);
|
|
void vnic_intr_clean(struct vnic_intr *intr);
|
|
|
|
#endif /* _VNIC_INTR_H_ */
|