cregit-Linux how code gets into the kernel

Release 4.11 drivers/net/ethernet/cisco/enic/vnic_intr.h

/*
 * Copyright 2008-2010 Cisco Systems, Inc.  All rights reserved.
 * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
 *
 * This program is free software; you may redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */

#ifndef _VNIC_INTR_H_

#define _VNIC_INTR_H_

#include <linux/pci.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 {
	
u32 coalescing_timer;		/* 0x00 */
	
u32 pad0;
	
u32 coalescing_value;		/* 0x08 */
	
u32 pad1;
	
u32 coalescing_type;		/* 0x10 */
	
u32 pad2;
	
u32 mask_on_assertion;		/* 0x18 */
	
u32 pad3;
	
u32 mask;			/* 0x20 */
	
u32 pad4;
	
u32 int_credits;		/* 0x28 */
	
u32 pad5;
	
u32 int_credit_return;		/* 0x30 */
	
u32 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); }

Contributors

PersonTokensPropCommitsCommitProp
Scott Feldman24100.00%1100.00%
Total24100.00%1100.00%


static inline void vnic_intr_mask(struct vnic_intr *intr) { iowrite32(1, &intr->ctrl->mask); }

Contributors

PersonTokensPropCommitsCommitProp
Scott Feldman2395.83%150.00%
Vasanthy Kolluri14.17%150.00%
Total24100.00%2100.00%


static inline int vnic_intr_masked(struct vnic_intr *intr) { return ioread32(&intr->ctrl->mask); }

Contributors

PersonTokensPropCommitsCommitProp
Vasanthy Kolluri1356.52%133.33%
Scott Feldman1043.48%266.67%
Total23100.00%3100.00%


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 u32 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); }

Contributors

PersonTokensPropCommitsCommitProp
Scott Feldman75100.00%1100.00%
Total75100.00%1100.00%


static inline unsigned int vnic_intr_credits(struct vnic_intr *intr) { return ioread32(&intr->ctrl->int_credits); }

Contributors

PersonTokensPropCommitsCommitProp
Scott Feldman24100.00%1100.00%
Total24100.00%1100.00%


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); }

Contributors

PersonTokensPropCommitsCommitProp
Scott Feldman42100.00%1100.00%
Total42100.00%1100.00%


static inline u32 vnic_intr_legacy_pba(u32 __iomem *legacy_pba) { /* read PBA without clearing */ return ioread32(legacy_pba); }

Contributors

PersonTokensPropCommitsCommitProp
Scott Feldman19100.00%2100.00%
Total19100.00%2100.00%

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, u32 coalescing_timer, unsigned int coalescing_type, unsigned int mask_on_assertion); void vnic_intr_coalescing_timer_set(struct vnic_intr *intr, u32 coalescing_timer); void vnic_intr_clean(struct vnic_intr *intr); #endif /* _VNIC_INTR_H_ */

Overall Contributors

PersonTokensPropCommitsCommitProp
Scott Feldman38295.74%571.43%
Vasanthy Kolluri174.26%228.57%
Total399100.00%7100.00%
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