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Commit 6fdfa970 authored by Scott Feldman's avatar Scott Feldman Committed by David S. Miller
Browse files

enic: organize device initialization/deinit into separate functions 



To unclutter probe() a little bit, put all device initialization code
in one spot and device deinit code in another spot.  Also remove unused
rq->buf_index variable/func.

Signed-off-by: default avatarScott Feldman <scofeldm@cisco.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 491598a4

drivers/net/enic/enic_main.c

+89 −56
Original line number Diff line number Diff line
@@ -1741,6 +1741,88 @@ static const struct net_device_ops enic_netdev_ops = { 
#endif

};



void enic_dev_deinit(struct enic *enic)

{

	netif_napi_del(&enic->napi);

	enic_free_vnic_resources(enic);

	enic_clear_intr_mode(enic);

}



int enic_dev_init(struct enic *enic)

{

	struct net_device *netdev = enic->netdev;

	int err;



	/* Get vNIC configuration

	 */



	err = enic_get_vnic_config(enic);

	if (err) {

		printk(KERN_ERR PFX

			"Get vNIC configuration failed, aborting.\n");

		return err;

	}



	/* Get available resource counts

	 */



	enic_get_res_counts(enic);



	/* Set interrupt mode based on resource counts and system

	 * capabilities

	 */



	err = enic_set_intr_mode(enic);

	if (err) {

		printk(KERN_ERR PFX

			"Failed to set intr mode, aborting.\n");

		return err;

	}



	/* Allocate and configure vNIC resources

	 */



	err = enic_alloc_vnic_resources(enic);

	if (err) {

		printk(KERN_ERR PFX

			"Failed to alloc vNIC resources, aborting.\n");

		goto err_out_free_vnic_resources;

	}



	enic_init_vnic_resources(enic);



	err = enic_set_rq_alloc_buf(enic);

	if (err) {

		printk(KERN_ERR PFX

			"Failed to set RQ buffer allocator, aborting.\n");

		goto err_out_free_vnic_resources;

	}



	err = enic_set_niccfg(enic);

	if (err) {

		printk(KERN_ERR PFX

			"Failed to config nic, aborting.\n");

		goto err_out_free_vnic_resources;

	}



	switch (vnic_dev_get_intr_mode(enic->vdev)) {

	default:

		netif_napi_add(netdev, &enic->napi, enic_poll, 64);

		break;

	case VNIC_DEV_INTR_MODE_MSIX:

		netif_napi_add(netdev, &enic->napi, enic_poll_msix, 64);

		break;

	}



	return 0;



err_out_free_vnic_resources:

	enic_clear_intr_mode(enic);

	enic_free_vnic_resources(enic);



	return err;

}



static void enic_iounmap(struct enic *enic)

{

	unsigned int i;
@@ -1883,51 +1965,13 @@ static int __devinit enic_probe(struct pci_dev *pdev, 
		goto err_out_dev_close;

	}



	/* Get vNIC configuration

	 */



	err = enic_get_vnic_config(enic);

	err = enic_dev_init(enic);

	if (err) {

		printk(KERN_ERR PFX

			"Get vNIC configuration failed, aborting.\n");

			"Device initialization failed, aborting.\n");

		goto err_out_dev_close;

	}



	/* Get available resource counts

	 */



	enic_get_res_counts(enic);



	/* Set interrupt mode based on resource counts and system

	 * capabilities

	 */



	err = enic_set_intr_mode(enic);

	if (err) {

		printk(KERN_ERR PFX

			"Failed to set intr mode, aborting.\n");

		goto err_out_dev_close;

	}



	/* Allocate and configure vNIC resources

	 */



	err = enic_alloc_vnic_resources(enic);

	if (err) {

		printk(KERN_ERR PFX

			"Failed to alloc vNIC resources, aborting.\n");

		goto err_out_free_vnic_resources;

	}



	enic_init_vnic_resources(enic);



	err = enic_set_niccfg(enic);

	if (err) {

		printk(KERN_ERR PFX

			"Failed to config nic, aborting.\n");

		goto err_out_free_vnic_resources;

	}



	/* Setup notification timer, HW reset task, and locks

	 */
@@ -1952,22 +1996,13 @@ static int __devinit enic_probe(struct pci_dev *pdev, 
	if (err) {

		printk(KERN_ERR PFX

			"Invalid MAC address, aborting.\n");

		goto err_out_free_vnic_resources;

		goto err_out_dev_deinit;

	}



	netdev->netdev_ops = &enic_netdev_ops;

	netdev->watchdog_timeo = 2 * HZ;

	netdev->ethtool_ops = &enic_ethtool_ops;



	switch (vnic_dev_get_intr_mode(enic->vdev)) {

	default:

		netif_napi_add(netdev, &enic->napi, enic_poll, 64);

		break;

	case VNIC_DEV_INTR_MODE_MSIX:

		netif_napi_add(netdev, &enic->napi, enic_poll_msix, 64);

		break;

	}



	netdev->features |= NETIF_F_HW_VLAN_TX |

		NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER;

	if (ENIC_SETTING(enic, TXCSUM))
@@ -1995,17 +2030,16 @@ static int __devinit enic_probe(struct pci_dev *pdev, 
	if (err) {

		printk(KERN_ERR PFX

			"Cannot register net device, aborting.\n");

		goto err_out_free_vnic_resources;

		goto err_out_dev_deinit;

	}



	return 0;



err_out_free_vnic_resources:

	enic_free_vnic_resources(enic);

err_out_dev_deinit:

	enic_dev_deinit(enic);

err_out_dev_close:

	vnic_dev_close(enic->vdev);

err_out_vnic_unregister:

	enic_clear_intr_mode(enic);

	vnic_dev_unregister(enic->vdev);

err_out_iounmap:

	enic_iounmap(enic);
@@ -2029,9 +2063,8 @@ static void __devexit enic_remove(struct pci_dev *pdev) 


		flush_scheduled_work();

		unregister_netdev(netdev);

		enic_free_vnic_resources(enic);

		enic_dev_deinit(enic);

		vnic_dev_close(enic->vdev);

		enic_clear_intr_mode(enic);

		vnic_dev_unregister(enic->vdev);

		enic_iounmap(enic);

		pci_release_regions(pdev);

drivers/net/enic/vnic_rq.c

+18 −9
Original line number Diff line number Diff line
@@ -62,7 +62,6 @@ static int vnic_rq_alloc_bufs(struct vnic_rq *rq) 
	}



	rq->to_use = rq->to_clean = rq->bufs[0];

	rq->buf_index = 0;



	return 0;

}
@@ -113,12 +112,12 @@ int vnic_rq_alloc(struct vnic_dev *vdev, struct vnic_rq *rq, unsigned int index, 
	return 0;

}



void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index,

void vnic_rq_init_start(struct vnic_rq *rq, unsigned int cq_index,

	unsigned int fetch_index, unsigned int posted_index,

	unsigned int error_interrupt_enable,

	unsigned int error_interrupt_offset)

{

	u64 paddr;

	u32 fetch_index;



	paddr = (u64)rq->ring.base_addr | VNIC_PADDR_TARGET;

	writeq(paddr, &rq->ctrl->ring_base);
@@ -128,15 +127,27 @@ void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index, 
	iowrite32(error_interrupt_offset, &rq->ctrl->error_interrupt_offset);

	iowrite32(0, &rq->ctrl->dropped_packet_count);

	iowrite32(0, &rq->ctrl->error_status);

	iowrite32(fetch_index, &rq->ctrl->fetch_index);

	iowrite32(posted_index, &rq->ctrl->posted_index);



	/* Use current fetch_index as the ring starting point */

	fetch_index = ioread32(&rq->ctrl->fetch_index);

	rq->to_use = rq->to_clean =

		&rq->bufs[fetch_index / VNIC_RQ_BUF_BLK_ENTRIES]

			[fetch_index % VNIC_RQ_BUF_BLK_ENTRIES];

	iowrite32(fetch_index, &rq->ctrl->posted_index);

}



void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index,

	unsigned int error_interrupt_enable,

	unsigned int error_interrupt_offset)

{

	u32 fetch_index;



	rq->buf_index = 0;

	/* Use current fetch_index as the ring starting point */

	fetch_index = ioread32(&rq->ctrl->fetch_index);



	vnic_rq_init_start(rq, cq_index,

		fetch_index, fetch_index,

		error_interrupt_enable,

		error_interrupt_offset);

}



unsigned int vnic_rq_error_status(struct vnic_rq *rq)
@@ -192,8 +203,6 @@ void vnic_rq_clean(struct vnic_rq *rq, 
			[fetch_index % VNIC_RQ_BUF_BLK_ENTRIES];

	iowrite32(fetch_index, &rq->ctrl->posted_index);



	rq->buf_index = 0;



	vnic_dev_clear_desc_ring(&rq->ring);

}

drivers/net/enic/vnic_rq.h

+5 −7
Original line number Diff line number Diff line 
/*

 * Copyright 2008 Cisco Systems, Inc.  All rights reserved.

 * Copyright 2008, 2009 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
@@ -79,7 +79,6 @@ struct vnic_rq { 
	struct vnic_rq_buf *to_use;

	struct vnic_rq_buf *to_clean;

	void *os_buf_head;

	unsigned int buf_index;

	unsigned int pkts_outstanding;

};
@@ -105,11 +104,6 @@ static inline unsigned int vnic_rq_next_index(struct vnic_rq *rq) 
	return rq->to_use->index;

}



static inline unsigned int vnic_rq_next_buf_index(struct vnic_rq *rq)

{

	return rq->buf_index++;

}



static inline void vnic_rq_post(struct vnic_rq *rq,

	void *os_buf, unsigned int os_buf_index,

	dma_addr_t dma_addr, unsigned int len)
@@ -204,6 +198,10 @@ static inline int vnic_rq_fill(struct vnic_rq *rq, 
void vnic_rq_free(struct vnic_rq *rq);

int vnic_rq_alloc(struct vnic_dev *vdev, struct vnic_rq *rq, unsigned int index,

	unsigned int desc_count, unsigned int desc_size);

void vnic_rq_init_start(struct vnic_rq *rq, unsigned int cq_index,

	unsigned int fetch_index, unsigned int posted_index,

	unsigned int error_interrupt_enable,

	unsigned int error_interrupt_offset);

void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index,

	unsigned int error_interrupt_enable,

	unsigned int error_interrupt_offset);

drivers/net/enic/vnic_wq.c

+17 −3
Original line number Diff line number Diff line
@@ -112,7 +112,8 @@ int vnic_wq_alloc(struct vnic_dev *vdev, struct vnic_wq *wq, unsigned int index, 
	return 0;

}



void vnic_wq_init(struct vnic_wq *wq, unsigned int cq_index,

void vnic_wq_init_start(struct vnic_wq *wq, unsigned int cq_index,

	unsigned int fetch_index, unsigned int posted_index,

	unsigned int error_interrupt_enable,

	unsigned int error_interrupt_offset)

{
@@ -121,12 +122,25 @@ void vnic_wq_init(struct vnic_wq *wq, unsigned int cq_index, 
	paddr = (u64)wq->ring.base_addr | VNIC_PADDR_TARGET;

	writeq(paddr, &wq->ctrl->ring_base);

	iowrite32(wq->ring.desc_count, &wq->ctrl->ring_size);

	iowrite32(0, &wq->ctrl->fetch_index);

	iowrite32(0, &wq->ctrl->posted_index);

	iowrite32(fetch_index, &wq->ctrl->fetch_index);

	iowrite32(posted_index, &wq->ctrl->posted_index);

	iowrite32(cq_index, &wq->ctrl->cq_index);

	iowrite32(error_interrupt_enable, &wq->ctrl->error_interrupt_enable);

	iowrite32(error_interrupt_offset, &wq->ctrl->error_interrupt_offset);

	iowrite32(0, &wq->ctrl->error_status);



	wq->to_use = wq->to_clean =

		&wq->bufs[fetch_index / VNIC_WQ_BUF_BLK_ENTRIES]

			[fetch_index % VNIC_WQ_BUF_BLK_ENTRIES];

}



void vnic_wq_init(struct vnic_wq *wq, unsigned int cq_index,

	unsigned int error_interrupt_enable,

	unsigned int error_interrupt_offset)

{

	vnic_wq_init_start(wq, cq_index, 0, 0,

		error_interrupt_enable,

		error_interrupt_offset);

}



unsigned int vnic_wq_error_status(struct vnic_wq *wq)

drivers/net/enic/vnic_wq.h

+4 −0
Original line number Diff line number Diff line
@@ -149,6 +149,10 @@ static inline void vnic_wq_service(struct vnic_wq *wq, 
void vnic_wq_free(struct vnic_wq *wq);

int vnic_wq_alloc(struct vnic_dev *vdev, struct vnic_wq *wq, unsigned int index,

	unsigned int desc_count, unsigned int desc_size);

void vnic_wq_init_start(struct vnic_wq *wq, unsigned int cq_index,

	unsigned int fetch_index, unsigned int posted_index,

	unsigned int error_interrupt_enable,

	unsigned int error_interrupt_offset);

void vnic_wq_init(struct vnic_wq *wq, unsigned int cq_index,

	unsigned int error_interrupt_enable,

	unsigned int error_interrupt_offset);