[mirror_ubuntu-artful-kernel.git] / drivers / scsi / fnic / fnic_res.c

/*
 * Copyright 2008 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.
 */
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/pci.h>
#include "wq_enet_desc.h"
#include "rq_enet_desc.h"
#include "cq_enet_desc.h"
#include "vnic_resource.h"
#include "vnic_dev.h"
#include "vnic_wq.h"
#include "vnic_rq.h"
#include "vnic_cq.h"
#include "vnic_intr.h"
#include "vnic_stats.h"
#include "vnic_nic.h"
#include "fnic.h"

int fnic_get_vnic_config(struct fnic *fnic)
{
	struct vnic_fc_config *c = &fnic->config;
	int err;

#define GET_CONFIG(m) \
	do { \
		err = vnic_dev_spec(fnic->vdev, \
				    offsetof(struct vnic_fc_config, m), \
				    sizeof(c->m), &c->m); \
		if (err) { \
			shost_printk(KERN_ERR, fnic->lport->host, \
				     "Error getting %s, %d\n", #m, \
				     err); \
			return err; \
		} \
	} while (0);

	GET_CONFIG(node_wwn);
	GET_CONFIG(port_wwn);
	GET_CONFIG(wq_enet_desc_count);
	GET_CONFIG(wq_copy_desc_count);
	GET_CONFIG(rq_desc_count);
	GET_CONFIG(maxdatafieldsize);
	GET_CONFIG(ed_tov);
	GET_CONFIG(ra_tov);
	GET_CONFIG(intr_timer);
	GET_CONFIG(intr_timer_type);
	GET_CONFIG(flags);
	GET_CONFIG(flogi_retries);
	GET_CONFIG(flogi_timeout);
	GET_CONFIG(plogi_retries);
	GET_CONFIG(plogi_timeout);
	GET_CONFIG(io_throttle_count);
	GET_CONFIG(link_down_timeout);
	GET_CONFIG(port_down_timeout);
	GET_CONFIG(port_down_io_retries);
	GET_CONFIG(luns_per_tgt);

	c->wq_enet_desc_count =
		min_t(u32, VNIC_FNIC_WQ_DESCS_MAX,
		      max_t(u32, VNIC_FNIC_WQ_DESCS_MIN,
			    c->wq_enet_desc_count));
	c->wq_enet_desc_count = ALIGN(c->wq_enet_desc_count, 16);

	c->wq_copy_desc_count =
		min_t(u32, VNIC_FNIC_WQ_COPY_DESCS_MAX,
		      max_t(u32, VNIC_FNIC_WQ_COPY_DESCS_MIN,
			    c->wq_copy_desc_count));
	c->wq_copy_desc_count = ALIGN(c->wq_copy_desc_count, 16);

	c->rq_desc_count =
		min_t(u32, VNIC_FNIC_RQ_DESCS_MAX,
		      max_t(u32, VNIC_FNIC_RQ_DESCS_MIN,
			    c->rq_desc_count));
	c->rq_desc_count = ALIGN(c->rq_desc_count, 16);

	c->maxdatafieldsize =
		min_t(u16, VNIC_FNIC_MAXDATAFIELDSIZE_MAX,
		      max_t(u16, VNIC_FNIC_MAXDATAFIELDSIZE_MIN,
			    c->maxdatafieldsize));
	c->ed_tov =
		min_t(u32, VNIC_FNIC_EDTOV_MAX,
		      max_t(u32, VNIC_FNIC_EDTOV_MIN,
			    c->ed_tov));

	c->ra_tov =
		min_t(u32, VNIC_FNIC_RATOV_MAX,
		      max_t(u32, VNIC_FNIC_RATOV_MIN,
			    c->ra_tov));

	c->flogi_retries =
		min_t(u32, VNIC_FNIC_FLOGI_RETRIES_MAX, c->flogi_retries);

	c->flogi_timeout =
		min_t(u32, VNIC_FNIC_FLOGI_TIMEOUT_MAX,
		      max_t(u32, VNIC_FNIC_FLOGI_TIMEOUT_MIN,
			    c->flogi_timeout));

	c->plogi_retries =
		min_t(u32, VNIC_FNIC_PLOGI_RETRIES_MAX, c->plogi_retries);

	c->plogi_timeout =
		min_t(u32, VNIC_FNIC_PLOGI_TIMEOUT_MAX,
		      max_t(u32, VNIC_FNIC_PLOGI_TIMEOUT_MIN,
			    c->plogi_timeout));

	c->io_throttle_count =
		min_t(u32, VNIC_FNIC_IO_THROTTLE_COUNT_MAX,
		      max_t(u32, VNIC_FNIC_IO_THROTTLE_COUNT_MIN,
			    c->io_throttle_count));

	c->link_down_timeout =
		min_t(u32, VNIC_FNIC_LINK_DOWN_TIMEOUT_MAX,
		      c->link_down_timeout);

	c->port_down_timeout =
		min_t(u32, VNIC_FNIC_PORT_DOWN_TIMEOUT_MAX,
		      c->port_down_timeout);

	c->port_down_io_retries =
		min_t(u32, VNIC_FNIC_PORT_DOWN_IO_RETRIES_MAX,
		      c->port_down_io_retries);

	c->luns_per_tgt =
		min_t(u32, VNIC_FNIC_LUNS_PER_TARGET_MAX,
		      max_t(u32, VNIC_FNIC_LUNS_PER_TARGET_MIN,
			    c->luns_per_tgt));

	c->intr_timer = min_t(u16, VNIC_INTR_TIMER_MAX, c->intr_timer);
	c->intr_timer_type = c->intr_timer_type;

	shost_printk(KERN_INFO, fnic->lport->host,
		     "vNIC MAC addr %02x:%02x:%02x:%02x:%02x:%02x "
		     "wq/wq_copy/rq %d/%d/%d\n",
		     fnic->mac_addr[0], fnic->mac_addr[1], fnic->mac_addr[2],
		     fnic->mac_addr[3], fnic->mac_addr[4], fnic->mac_addr[5],
		     c->wq_enet_desc_count, c->wq_copy_desc_count,
		     c->rq_desc_count);
	shost_printk(KERN_INFO, fnic->lport->host,
		     "vNIC node wwn %llx port wwn %llx\n",
		     c->node_wwn, c->port_wwn);
	shost_printk(KERN_INFO, fnic->lport->host,
		     "vNIC ed_tov %d ra_tov %d\n",
		     c->ed_tov, c->ra_tov);
	shost_printk(KERN_INFO, fnic->lport->host,
		     "vNIC mtu %d intr timer %d\n",
		     c->maxdatafieldsize, c->intr_timer);
	shost_printk(KERN_INFO, fnic->lport->host,
		     "vNIC flags 0x%x luns per tgt %d\n",
		     c->flags, c->luns_per_tgt);
	shost_printk(KERN_INFO, fnic->lport->host,
		     "vNIC flogi_retries %d flogi timeout %d\n",
		     c->flogi_retries, c->flogi_timeout);
	shost_printk(KERN_INFO, fnic->lport->host,
		     "vNIC plogi retries %d plogi timeout %d\n",
		     c->plogi_retries, c->plogi_timeout);
	shost_printk(KERN_INFO, fnic->lport->host,
		     "vNIC io throttle count %d link dn timeout %d\n",
		     c->io_throttle_count, c->link_down_timeout);
	shost_printk(KERN_INFO, fnic->lport->host,
		     "vNIC port dn io retries %d port dn timeout %d\n",
		     c->port_down_io_retries, c->port_down_timeout);

	return 0;
}

int fnic_set_nic_config(struct fnic *fnic, u8 rss_default_cpu,
			u8 rss_hash_type,
			u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable,
			u8 tso_ipid_split_en, u8 ig_vlan_strip_en)
{
	u64 a0, a1;
	u32 nic_cfg;
	int wait = 1000;

	vnic_set_nic_cfg(&nic_cfg, rss_default_cpu,
		rss_hash_type, rss_hash_bits, rss_base_cpu,
		rss_enable, tso_ipid_split_en, ig_vlan_strip_en);

	a0 = nic_cfg;
	a1 = 0;

	return vnic_dev_cmd(fnic->vdev, CMD_NIC_CFG, &a0, &a1, wait);
}

void fnic_get_res_counts(struct fnic *fnic)
{
	fnic->wq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_WQ);
	fnic->raw_wq_count = fnic->wq_count - 1;
	fnic->wq_copy_count = fnic->wq_count - fnic->raw_wq_count;
	fnic->rq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_RQ);
	fnic->cq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_CQ);
	fnic->intr_count = vnic_dev_get_res_count(fnic->vdev,
		RES_TYPE_INTR_CTRL);
}

void fnic_free_vnic_resources(struct fnic *fnic)
{
	unsigned int i;

	for (i = 0; i < fnic->raw_wq_count; i++)
		vnic_wq_free(&fnic->wq[i]);

	for (i = 0; i < fnic->wq_copy_count; i++)
		vnic_wq_copy_free(&fnic->wq_copy[i]);

	for (i = 0; i < fnic->rq_count; i++)
		vnic_rq_free(&fnic->rq[i]);

	for (i = 0; i < fnic->cq_count; i++)
		vnic_cq_free(&fnic->cq[i]);

	for (i = 0; i < fnic->intr_count; i++)
		vnic_intr_free(&fnic->intr[i]);
}

int fnic_alloc_vnic_resources(struct fnic *fnic)
{
	enum vnic_dev_intr_mode intr_mode;
	unsigned int mask_on_assertion;
	unsigned int interrupt_offset;
	unsigned int error_interrupt_enable;
	unsigned int error_interrupt_offset;
	unsigned int i, cq_index;
	unsigned int wq_copy_cq_desc_count;
	int err;

	intr_mode = vnic_dev_get_intr_mode(fnic->vdev);

	shost_printk(KERN_INFO, fnic->lport->host, "vNIC interrupt mode: %s\n",
		     intr_mode == VNIC_DEV_INTR_MODE_INTX ? "legacy PCI INTx" :
		     intr_mode == VNIC_DEV_INTR_MODE_MSI ? "MSI" :
		     intr_mode == VNIC_DEV_INTR_MODE_MSIX ?
		     "MSI-X" : "unknown");

	shost_printk(KERN_INFO, fnic->lport->host, "vNIC resources avail: "
		     "wq %d cp_wq %d raw_wq %d rq %d cq %d intr %d\n",
		     fnic->wq_count, fnic->wq_copy_count, fnic->raw_wq_count,
		     fnic->rq_count, fnic->cq_count, fnic->intr_count);

	/* Allocate Raw WQ used for FCS frames */
	for (i = 0; i < fnic->raw_wq_count; i++) {
		err = vnic_wq_alloc(fnic->vdev, &fnic->wq[i], i,
			fnic->config.wq_enet_desc_count,
			sizeof(struct wq_enet_desc));
		if (err)
			goto err_out_cleanup;
	}

	/* Allocate Copy WQs used for SCSI IOs */
	for (i = 0; i < fnic->wq_copy_count; i++) {
		err = vnic_wq_copy_alloc(fnic->vdev, &fnic->wq_copy[i],
			(fnic->raw_wq_count + i),
			fnic->config.wq_copy_desc_count,
			sizeof(struct fcpio_host_req));
		if (err)
			goto err_out_cleanup;
	}

	/* RQ for receiving FCS frames */
	for (i = 0; i < fnic->rq_count; i++) {
		err = vnic_rq_alloc(fnic->vdev, &fnic->rq[i], i,
			fnic->config.rq_desc_count,
			sizeof(struct rq_enet_desc));
		if (err)
			goto err_out_cleanup;
	}

	/* CQ for each RQ */
	for (i = 0; i < fnic->rq_count; i++) {
		cq_index = i;
		err = vnic_cq_alloc(fnic->vdev,
			&fnic->cq[cq_index], cq_index,
			fnic->config.rq_desc_count,
			sizeof(struct cq_enet_rq_desc));
		if (err)
			goto err_out_cleanup;
	}

	/* CQ for each WQ */
	for (i = 0; i < fnic->raw_wq_count; i++) {
		cq_index = fnic->rq_count + i;
		err = vnic_cq_alloc(fnic->vdev, &fnic->cq[cq_index], cq_index,
			fnic->config.wq_enet_desc_count,
			sizeof(struct cq_enet_wq_desc));
		if (err)
			goto err_out_cleanup;
	}

	/* CQ for each COPY WQ */
	wq_copy_cq_desc_count = (fnic->config.wq_copy_desc_count * 3);
	for (i = 0; i < fnic->wq_copy_count; i++) {
		cq_index = fnic->raw_wq_count + fnic->rq_count + i;
		err = vnic_cq_alloc(fnic->vdev, &fnic->cq[cq_index],
			cq_index,
			wq_copy_cq_desc_count,
			sizeof(struct fcpio_fw_req));
		if (err)
			goto err_out_cleanup;
	}

	for (i = 0; i < fnic->intr_count; i++) {
		err = vnic_intr_alloc(fnic->vdev, &fnic->intr[i], i);
		if (err)
			goto err_out_cleanup;
	}

	fnic->legacy_pba = vnic_dev_get_res(fnic->vdev,
				RES_TYPE_INTR_PBA_LEGACY, 0);

	if (!fnic->legacy_pba && intr_mode == VNIC_DEV_INTR_MODE_INTX) {
		shost_printk(KERN_ERR, fnic->lport->host,
			     "Failed to hook legacy pba resource\n");
		err = -ENODEV;
		goto err_out_cleanup;
	}

	/*
	 * Init RQ/WQ resources.
	 *
	 * RQ[0 to n-1] point to CQ[0 to n-1]
	 * WQ[0 to m-1] point to CQ[n to n+m-1]
	 * WQ_COPY[0 to k-1] points to CQ[n+m to n+m+k-1]
	 *
	 * Note for copy wq we always initialize with cq_index = 0
	 *
	 * Error interrupt is not enabled for MSI.
	 */

	switch (intr_mode) {
	case VNIC_DEV_INTR_MODE_INTX:
	case VNIC_DEV_INTR_MODE_MSIX:
		error_interrupt_enable = 1;
		error_interrupt_offset = fnic->err_intr_offset;
		break;
	default:
		error_interrupt_enable = 0;
		error_interrupt_offset = 0;
		break;
	}

	for (i = 0; i < fnic->rq_count; i++) {
		cq_index = i;
		vnic_rq_init(&fnic->rq[i],
			     cq_index,
			     error_interrupt_enable,
			     error_interrupt_offset);
	}

	for (i = 0; i < fnic->raw_wq_count; i++) {
		cq_index = i + fnic->rq_count;
		vnic_wq_init(&fnic->wq[i],
			     cq_index,
			     error_interrupt_enable,
			     error_interrupt_offset);
	}

	for (i = 0; i < fnic->wq_copy_count; i++) {
		vnic_wq_copy_init(&fnic->wq_copy[i],
				  0 /* cq_index 0 - always */,
				  error_interrupt_enable,
				  error_interrupt_offset);
	}

	for (i = 0; i < fnic->cq_count; i++) {

		switch (intr_mode) {
		case VNIC_DEV_INTR_MODE_MSIX:
			interrupt_offset = i;
			break;
		default:
			interrupt_offset = 0;
			break;
		}

		vnic_cq_init(&fnic->cq[i],
			0 /* flow_control_enable */,
			1 /* color_enable */,
			0 /* cq_head */,
			0 /* cq_tail */,
			1 /* cq_tail_color */,
			1 /* interrupt_enable */,
			1 /* cq_entry_enable */,
			0 /* cq_message_enable */,
			interrupt_offset,
			0 /* cq_message_addr */);
	}

	/*
	 * Init INTR resources
	 *
	 * mask_on_assertion is not used for INTx due to the level-
	 * triggered nature of INTx
	 */

	switch (intr_mode) {
	case VNIC_DEV_INTR_MODE_MSI:
	case VNIC_DEV_INTR_MODE_MSIX:
		mask_on_assertion = 1;
		break;
	default:
		mask_on_assertion = 0;
		break;
	}

	for (i = 0; i < fnic->intr_count; i++) {
		vnic_intr_init(&fnic->intr[i],
			fnic->config.intr_timer,
			fnic->config.intr_timer_type,
			mask_on_assertion);
	}

	/* init the stats memory by making the first call here */
	err = vnic_dev_stats_dump(fnic->vdev, &fnic->stats);
	if (err) {
		shost_printk(KERN_ERR, fnic->lport->host,
			     "vnic_dev_stats_dump failed - x%x\n", err);
		goto err_out_cleanup;
	}

	/* Clear LIF stats */
	vnic_dev_stats_clear(fnic->vdev);

	return 0;

err_out_cleanup:
	fnic_free_vnic_resources(fnic);

	return err;
}
Commit	Line	Data
5df6d737 AJ	1	/*
	2	* Copyright 2008 Cisco Systems, Inc. All rights reserved.
	3	* Copyright 2007 Nuova Systems, Inc. All rights reserved.
	4	*
	5	* This program is free software; you may redistribute it and/or modify
	6	* it under the terms of the GNU General Public License as published by
	7	* the Free Software Foundation; version 2 of the License.
	8	*
	9	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	10	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	11	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	12	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	13	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	14	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	15	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	16	* SOFTWARE.
	17	*/
	18	#include <linux/errno.h>
	19	#include <linux/types.h>
	20	#include <linux/pci.h>
	21	#include "wq_enet_desc.h"
	22	#include "rq_enet_desc.h"
	23	#include "cq_enet_desc.h"
	24	#include "vnic_resource.h"
	25	#include "vnic_dev.h"
	26	#include "vnic_wq.h"
	27	#include "vnic_rq.h"
	28	#include "vnic_cq.h"
	29	#include "vnic_intr.h"
	30	#include "vnic_stats.h"
	31	#include "vnic_nic.h"
	32	#include "fnic.h"
	33
	34	int fnic_get_vnic_config(struct fnic *fnic)
	35	{
	36	struct vnic_fc_config *c = &fnic->config;
	37	int err;
	38
	39	#define GET_CONFIG(m) \
	40	do { \
	41	err = vnic_dev_spec(fnic->vdev, \
	42	offsetof(struct vnic_fc_config, m), \
	43	sizeof(c->m), &c->m); \
	44	if (err) { \
	45	shost_printk(KERN_ERR, fnic->lport->host, \
	46	"Error getting %s, %d\n", #m, \
	47	err); \
	48	return err; \
	49	} \
	50	} while (0);
	51
	52	GET_CONFIG(node_wwn);
	53	GET_CONFIG(port_wwn);
	54	GET_CONFIG(wq_enet_desc_count);
	55	GET_CONFIG(wq_copy_desc_count);
	56	GET_CONFIG(rq_desc_count);
	57	GET_CONFIG(maxdatafieldsize);
	58	GET_CONFIG(ed_tov);
	59	GET_CONFIG(ra_tov);
	60	GET_CONFIG(intr_timer);
	61	GET_CONFIG(intr_timer_type);
	62	GET_CONFIG(flags);
	63	GET_CONFIG(flogi_retries);
	64	GET_CONFIG(flogi_timeout);
65	GET_CONFIG(plogi_retries);
66	GET_CONFIG(plogi_timeout);
67	GET_CONFIG(io_throttle_count);
68	GET_CONFIG(link_down_timeout);
69	GET_CONFIG(port_down_timeout);
70	GET_CONFIG(port_down_io_retries);
71	GET_CONFIG(luns_per_tgt);
72
73	c->wq_enet_desc_count =
74	min_t(u32, VNIC_FNIC_WQ_DESCS_MAX,
75	max_t(u32, VNIC_FNIC_WQ_DESCS_MIN,
76	c->wq_enet_desc_count));
77	c->wq_enet_desc_count = ALIGN(c->wq_enet_desc_count, 16);
78
79	c->wq_copy_desc_count =
80	min_t(u32, VNIC_FNIC_WQ_COPY_DESCS_MAX,
81	max_t(u32, VNIC_FNIC_WQ_COPY_DESCS_MIN,
82	c->wq_copy_desc_count));
83	c->wq_copy_desc_count = ALIGN(c->wq_copy_desc_count, 16);
84
85	c->rq_desc_count =
86	min_t(u32, VNIC_FNIC_RQ_DESCS_MAX,
87	max_t(u32, VNIC_FNIC_RQ_DESCS_MIN,
88	c->rq_desc_count));
89	c->rq_desc_count = ALIGN(c->rq_desc_count, 16);
90
91	c->maxdatafieldsize =
92	min_t(u16, VNIC_FNIC_MAXDATAFIELDSIZE_MAX,
93	max_t(u16, VNIC_FNIC_MAXDATAFIELDSIZE_MIN,
94	c->maxdatafieldsize));
95	c->ed_tov =
96	min_t(u32, VNIC_FNIC_EDTOV_MAX,
97	max_t(u32, VNIC_FNIC_EDTOV_MIN,
98	c->ed_tov));
99
100	c->ra_tov =
101	min_t(u32, VNIC_FNIC_RATOV_MAX,
102	max_t(u32, VNIC_FNIC_RATOV_MIN,
103	c->ra_tov));
104
105	c->flogi_retries =
106	min_t(u32, VNIC_FNIC_FLOGI_RETRIES_MAX, c->flogi_retries);
107
108	c->flogi_timeout =
109	min_t(u32, VNIC_FNIC_FLOGI_TIMEOUT_MAX,
110	max_t(u32, VNIC_FNIC_FLOGI_TIMEOUT_MIN,
111	c->flogi_timeout));
112
113	c->plogi_retries =
114	min_t(u32, VNIC_FNIC_PLOGI_RETRIES_MAX, c->plogi_retries);
115
116	c->plogi_timeout =
117	min_t(u32, VNIC_FNIC_PLOGI_TIMEOUT_MAX,
118	max_t(u32, VNIC_FNIC_PLOGI_TIMEOUT_MIN,
119	c->plogi_timeout));
120
121	c->io_throttle_count =
122	min_t(u32, VNIC_FNIC_IO_THROTTLE_COUNT_MAX,
123	max_t(u32, VNIC_FNIC_IO_THROTTLE_COUNT_MIN,
124	c->io_throttle_count));
125
126	c->link_down_timeout =
127	min_t(u32, VNIC_FNIC_LINK_DOWN_TIMEOUT_MAX,
128	c->link_down_timeout);
129
130	c->port_down_timeout =
131	min_t(u32, VNIC_FNIC_PORT_DOWN_TIMEOUT_MAX,
132	c->port_down_timeout);
133
134	c->port_down_io_retries =
135	min_t(u32, VNIC_FNIC_PORT_DOWN_IO_RETRIES_MAX,
136	c->port_down_io_retries);
137
138	c->luns_per_tgt =
139	min_t(u32, VNIC_FNIC_LUNS_PER_TARGET_MAX,
140	max_t(u32, VNIC_FNIC_LUNS_PER_TARGET_MIN,
141	c->luns_per_tgt));
142
143	c->intr_timer = min_t(u16, VNIC_INTR_TIMER_MAX, c->intr_timer);
144	c->intr_timer_type = c->intr_timer_type;
145
146	shost_printk(KERN_INFO, fnic->lport->host,
147	"vNIC MAC addr %02x:%02x:%02x:%02x:%02x:%02x "
148	"wq/wq_copy/rq %d/%d/%d\n",
149	fnic->mac_addr[0], fnic->mac_addr[1], fnic->mac_addr[2],
150	fnic->mac_addr[3], fnic->mac_addr[4], fnic->mac_addr[5],
151	c->wq_enet_desc_count, c->wq_copy_desc_count,
152	c->rq_desc_count);
153	shost_printk(KERN_INFO, fnic->lport->host,
154	"vNIC node wwn %llx port wwn %llx\n",
155	c->node_wwn, c->port_wwn);
156	shost_printk(KERN_INFO, fnic->lport->host,
157	"vNIC ed_tov %d ra_tov %d\n",
158	c->ed_tov, c->ra_tov);
159	shost_printk(KERN_INFO, fnic->lport->host,
160	"vNIC mtu %d intr timer %d\n",
161	c->maxdatafieldsize, c->intr_timer);
162	shost_printk(KERN_INFO, fnic->lport->host,
163	"vNIC flags 0x%x luns per tgt %d\n",
164	c->flags, c->luns_per_tgt);
165	shost_printk(KERN_INFO, fnic->lport->host,
166	"vNIC flogi_retries %d flogi timeout %d\n",
167	c->flogi_retries, c->flogi_timeout);
168	shost_printk(KERN_INFO, fnic->lport->host,
169	"vNIC plogi retries %d plogi timeout %d\n",
170	c->plogi_retries, c->plogi_timeout);
171	shost_printk(KERN_INFO, fnic->lport->host,
172	"vNIC io throttle count %d link dn timeout %d\n",
173	c->io_throttle_count, c->link_down_timeout);
174	shost_printk(KERN_INFO, fnic->lport->host,
175	"vNIC port dn io retries %d port dn timeout %d\n",
176	c->port_down_io_retries, c->port_down_timeout);
177
178	return 0;
179	}
180
181	int fnic_set_nic_config(struct fnic *fnic, u8 rss_default_cpu,
182	u8 rss_hash_type,
183	u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable,
184	u8 tso_ipid_split_en, u8 ig_vlan_strip_en)
185	{
186	u64 a0, a1;
187	u32 nic_cfg;
188	int wait = 1000;
189
190	vnic_set_nic_cfg(&nic_cfg, rss_default_cpu,
191	rss_hash_type, rss_hash_bits, rss_base_cpu,
192	rss_enable, tso_ipid_split_en, ig_vlan_strip_en);
193
194	a0 = nic_cfg;
195	a1 = 0;
196
197	return vnic_dev_cmd(fnic->vdev, CMD_NIC_CFG, &a0, &a1, wait);
198	}
199
200	void fnic_get_res_counts(struct fnic *fnic)
201	{
202	fnic->wq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_WQ);
203	fnic->raw_wq_count = fnic->wq_count - 1;
204	fnic->wq_copy_count = fnic->wq_count - fnic->raw_wq_count;
205	fnic->rq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_RQ);
206	fnic->cq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_CQ);
207	fnic->intr_count = vnic_dev_get_res_count(fnic->vdev,
208	RES_TYPE_INTR_CTRL);
209	}
210
211	void fnic_free_vnic_resources(struct fnic *fnic)
212	{
213	unsigned int i;
214
215	for (i = 0; i < fnic->raw_wq_count; i++)
216	vnic_wq_free(&fnic->wq[i]);
217
218	for (i = 0; i < fnic->wq_copy_count; i++)
219	vnic_wq_copy_free(&fnic->wq_copy[i]);
220
221	for (i = 0; i < fnic->rq_count; i++)
222	vnic_rq_free(&fnic->rq[i]);
223
224	for (i = 0; i < fnic->cq_count; i++)
225	vnic_cq_free(&fnic->cq[i]);
226
227	for (i = 0; i < fnic->intr_count; i++)
228	vnic_intr_free(&fnic->intr[i]);
229	}
230
231	int fnic_alloc_vnic_resources(struct fnic *fnic)
232	{
233	enum vnic_dev_intr_mode intr_mode;
234	unsigned int mask_on_assertion;
235	unsigned int interrupt_offset;
236	unsigned int error_interrupt_enable;
237	unsigned int error_interrupt_offset;
238	unsigned int i, cq_index;
239	unsigned int wq_copy_cq_desc_count;
240	int err;
241
242	intr_mode = vnic_dev_get_intr_mode(fnic->vdev);
243
244	shost_printk(KERN_INFO, fnic->lport->host, "vNIC interrupt mode: %s\n",
245	intr_mode == VNIC_DEV_INTR_MODE_INTX ? "legacy PCI INTx" :
246	intr_mode == VNIC_DEV_INTR_MODE_MSI ? "MSI" :
247	intr_mode == VNIC_DEV_INTR_MODE_MSIX ?
248	"MSI-X" : "unknown");
249
250	shost_printk(KERN_INFO, fnic->lport->host, "vNIC resources avail: "
251	"wq %d cp_wq %d raw_wq %d rq %d cq %d intr %d\n",
252	fnic->wq_count, fnic->wq_copy_count, fnic->raw_wq_count,
253	fnic->rq_count, fnic->cq_count, fnic->intr_count);
254
255	/* Allocate Raw WQ used for FCS frames */
256	for (i = 0; i < fnic->raw_wq_count; i++) {
257	err = vnic_wq_alloc(fnic->vdev, &fnic->wq[i], i,
258	fnic->config.wq_enet_desc_count,
259	sizeof(struct wq_enet_desc));
260	if (err)
261	goto err_out_cleanup;
262	}
263
264	/* Allocate Copy WQs used for SCSI IOs */
265	for (i = 0; i < fnic->wq_copy_count; i++) {
266	err = vnic_wq_copy_alloc(fnic->vdev, &fnic->wq_copy[i],
267	(fnic->raw_wq_count + i),
268	fnic->config.wq_copy_desc_count,
269	sizeof(struct fcpio_host_req));
270	if (err)
271	goto err_out_cleanup;
272	}
273
274	/* RQ for receiving FCS frames */
275	for (i = 0; i < fnic->rq_count; i++) {
276	err = vnic_rq_alloc(fnic->vdev, &fnic->rq[i], i,
277	fnic->config.rq_desc_count,
278	sizeof(struct rq_enet_desc));
279	if (err)
280	goto err_out_cleanup;
281	}
282
283	/* CQ for each RQ */
284	for (i = 0; i < fnic->rq_count; i++) {
285	cq_index = i;
286	err = vnic_cq_alloc(fnic->vdev,
287	&fnic->cq[cq_index], cq_index,
288	fnic->config.rq_desc_count,
289	sizeof(struct cq_enet_rq_desc));
290	if (err)
291	goto err_out_cleanup;
292	}
293
294	/* CQ for each WQ */
295	for (i = 0; i < fnic->raw_wq_count; i++) {
296	cq_index = fnic->rq_count + i;
297	err = vnic_cq_alloc(fnic->vdev, &fnic->cq[cq_index], cq_index,
298	fnic->config.wq_enet_desc_count,
299	sizeof(struct cq_enet_wq_desc));
300	if (err)
301	goto err_out_cleanup;
302	}
303
304	/* CQ for each COPY WQ */
305	wq_copy_cq_desc_count = (fnic->config.wq_copy_desc_count * 3);
306	for (i = 0; i < fnic->wq_copy_count; i++) {
307	cq_index = fnic->raw_wq_count + fnic->rq_count + i;
308	err = vnic_cq_alloc(fnic->vdev, &fnic->cq[cq_index],
309	cq_index,
310	wq_copy_cq_desc_count,
311	sizeof(struct fcpio_fw_req));
312	if (err)
313	goto err_out_cleanup;
314	}
315
316	for (i = 0; i < fnic->intr_count; i++) {
317	err = vnic_intr_alloc(fnic->vdev, &fnic->intr[i], i);
318	if (err)
319	goto err_out_cleanup;
320	}
321
322	fnic->legacy_pba = vnic_dev_get_res(fnic->vdev,
323	RES_TYPE_INTR_PBA_LEGACY, 0);
324
325	if (!fnic->legacy_pba && intr_mode == VNIC_DEV_INTR_MODE_INTX) {
326	shost_printk(KERN_ERR, fnic->lport->host,
327	"Failed to hook legacy pba resource\n");
328	err = -ENODEV;
329	goto err_out_cleanup;
330	}
331
332	/*
333	* Init RQ/WQ resources.
334	*
335	* RQ[0 to n-1] point to CQ[0 to n-1]
336	* WQ[0 to m-1] point to CQ[n to n+m-1]
337	* WQ_COPY[0 to k-1] points to CQ[n+m to n+m+k-1]
338	*
339	* Note for copy wq we always initialize with cq_index = 0
340	*
341	* Error interrupt is not enabled for MSI.
342	*/
343
344	switch (intr_mode) {
345	case VNIC_DEV_INTR_MODE_INTX:
346	case VNIC_DEV_INTR_MODE_MSIX:
347	error_interrupt_enable = 1;
348	error_interrupt_offset = fnic->err_intr_offset;
349	break;
350	default:
351	error_interrupt_enable = 0;
352	error_interrupt_offset = 0;
353	break;
354	}
355
356	for (i = 0; i < fnic->rq_count; i++) {
357	cq_index = i;
358	vnic_rq_init(&fnic->rq[i],
359	cq_index,
360	error_interrupt_enable,
361	error_interrupt_offset);
362	}
363
364	for (i = 0; i < fnic->raw_wq_count; i++) {
365	cq_index = i + fnic->rq_count;
366	vnic_wq_init(&fnic->wq[i],
367	cq_index,
368	error_interrupt_enable,
369	error_interrupt_offset);
370	}
371
372	for (i = 0; i < fnic->wq_copy_count; i++) {
373	vnic_wq_copy_init(&fnic->wq_copy[i],
374	0 /* cq_index 0 - always */,
375	error_interrupt_enable,
376	error_interrupt_offset);
377	}
378
379	for (i = 0; i < fnic->cq_count; i++) {
380
381	switch (intr_mode) {
382	case VNIC_DEV_INTR_MODE_MSIX:
383	interrupt_offset = i;
384	break;
385	default:
386	interrupt_offset = 0;
387	break;
388	}
389
390	vnic_cq_init(&fnic->cq[i],
391	0 /* flow_control_enable */,
392	1 /* color_enable */,
393	0 /* cq_head */,
394	0 /* cq_tail */,
395	1 /* cq_tail_color */,
396	1 /* interrupt_enable */,
397	1 /* cq_entry_enable */,
398	0 /* cq_message_enable */,
399	interrupt_offset,
400	0 /* cq_message_addr */);
401	}
402
403	/*
404	* Init INTR resources
405	*
406	* mask_on_assertion is not used for INTx due to the level-
407	* triggered nature of INTx
408	*/
409
410	switch (intr_mode) {
411	case VNIC_DEV_INTR_MODE_MSI:
412	case VNIC_DEV_INTR_MODE_MSIX:
413	mask_on_assertion = 1;
414	break;
415	default:
416	mask_on_assertion = 0;
417	break;
418	}
419
420	for (i = 0; i < fnic->intr_count; i++) {
421	vnic_intr_init(&fnic->intr[i],
422	fnic->config.intr_timer,
423	fnic->config.intr_timer_type,
424	mask_on_assertion);
425	}
426
427	/* init the stats memory by making the first call here */
428	err = vnic_dev_stats_dump(fnic->vdev, &fnic->stats);
429	if (err) {
430	shost_printk(KERN_ERR, fnic->lport->host,
431	"vnic_dev_stats_dump failed - x%x\n", err);
432	goto err_out_cleanup;
433	}
434
435	/* Clear LIF stats */
436	vnic_dev_stats_clear(fnic->vdev);
437
438	return 0;
439
440	err_out_cleanup:
441	fnic_free_vnic_resources(fnic);
442
443	return err;
444	}