282 lines
6.6 KiB
C
282 lines
6.6 KiB
C
|
// SPDX-License-Identifier: GPL-2.0-only
|
||
|
|
// Copyright 2014 Cisco Systems, Inc. All rights reserved.
|
||
|
|
|
||
|
|
#include <linux/errno.h>
|
||
|
|
#include <linux/types.h>
|
||
|
|
#include <linux/pci.h>
|
||
|
|
|
||
|
|
#include "wq_enet_desc.h"
|
||
|
|
#include "cq_enet_desc.h"
|
||
|
|
#include "vnic_resource.h"
|
||
|
|
#include "vnic_dev.h"
|
||
|
|
#include "vnic_wq.h"
|
||
|
|
#include "vnic_cq.h"
|
||
|
|
#include "vnic_intr.h"
|
||
|
|
#include "vnic_stats.h"
|
||
|
|
#include "snic.h"
|
||
|
|
|
||
|
|
int
|
||
|
|
snic_get_vnic_config(struct snic *snic)
|
||
|
|
{
|
||
|
|
struct vnic_snic_config *c = &snic->config;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
#define GET_CONFIG(m) \
|
||
|
|
do { \
|
||
|
|
ret = svnic_dev_spec(snic->vdev, \
|
||
|
|
offsetof(struct vnic_snic_config, m), \
|
||
|
|
sizeof(c->m), \
|
||
|
|
&c->m); \
|
||
|
|
if (ret) { \
|
||
|
|
SNIC_HOST_ERR(snic->shost, \
|
||
|
|
"Error getting %s, %d\n", #m, ret); \
|
||
|
|
return ret; \
|
||
|
|
} \
|
||
|
|
} while (0)
|
||
|
|
|
||
|
|
GET_CONFIG(wq_enet_desc_count);
|
||
|
|
GET_CONFIG(maxdatafieldsize);
|
||
|
|
GET_CONFIG(intr_timer);
|
||
|
|
GET_CONFIG(intr_timer_type);
|
||
|
|
GET_CONFIG(flags);
|
||
|
|
GET_CONFIG(io_throttle_count);
|
||
|
|
GET_CONFIG(port_down_timeout);
|
||
|
|
GET_CONFIG(port_down_io_retries);
|
||
|
|
GET_CONFIG(luns_per_tgt);
|
||
|
|
GET_CONFIG(xpt_type);
|
||
|
|
GET_CONFIG(hid);
|
||
|
|
|
||
|
|
c->wq_enet_desc_count = min_t(u32,
|
||
|
|
VNIC_SNIC_WQ_DESCS_MAX,
|
||
|
|
max_t(u32,
|
||
|
|
VNIC_SNIC_WQ_DESCS_MIN,
|
||
|
|
c->wq_enet_desc_count));
|
||
|
|
|
||
|
|
c->wq_enet_desc_count = ALIGN(c->wq_enet_desc_count, 16);
|
||
|
|
|
||
|
|
c->maxdatafieldsize = min_t(u32,
|
||
|
|
VNIC_SNIC_MAXDATAFIELDSIZE_MAX,
|
||
|
|
max_t(u32,
|
||
|
|
VNIC_SNIC_MAXDATAFIELDSIZE_MIN,
|
||
|
|
c->maxdatafieldsize));
|
||
|
|
|
||
|
|
c->io_throttle_count = min_t(u32,
|
||
|
|
VNIC_SNIC_IO_THROTTLE_COUNT_MAX,
|
||
|
|
max_t(u32,
|
||
|
|
VNIC_SNIC_IO_THROTTLE_COUNT_MIN,
|
||
|
|
c->io_throttle_count));
|
||
|
|
|
||
|
|
c->port_down_timeout = min_t(u32,
|
||
|
|
VNIC_SNIC_PORT_DOWN_TIMEOUT_MAX,
|
||
|
|
c->port_down_timeout);
|
||
|
|
|
||
|
|
c->port_down_io_retries = min_t(u32,
|
||
|
|
VNIC_SNIC_PORT_DOWN_IO_RETRIES_MAX,
|
||
|
|
c->port_down_io_retries);
|
||
|
|
|
||
|
|
c->luns_per_tgt = min_t(u32,
|
||
|
|
VNIC_SNIC_LUNS_PER_TARGET_MAX,
|
||
|
|
max_t(u32,
|
||
|
|
VNIC_SNIC_LUNS_PER_TARGET_MIN,
|
||
|
|
c->luns_per_tgt));
|
||
|
|
|
||
|
|
c->intr_timer = min_t(u32, VNIC_INTR_TIMER_MAX, c->intr_timer);
|
||
|
|
|
||
|
|
SNIC_INFO("vNIC resources wq %d\n", c->wq_enet_desc_count);
|
||
|
|
SNIC_INFO("vNIC mtu %d intr timer %d\n",
|
||
|
|
c->maxdatafieldsize,
|
||
|
|
c->intr_timer);
|
||
|
|
|
||
|
|
SNIC_INFO("vNIC flags 0x%x luns per tgt %d\n",
|
||
|
|
c->flags,
|
||
|
|
c->luns_per_tgt);
|
||
|
|
|
||
|
|
SNIC_INFO("vNIC io throttle count %d\n", c->io_throttle_count);
|
||
|
|
SNIC_INFO("vNIC port down timeout %d port down io retries %d\n",
|
||
|
|
c->port_down_timeout,
|
||
|
|
c->port_down_io_retries);
|
||
|
|
|
||
|
|
SNIC_INFO("vNIC back end type = %d\n", c->xpt_type);
|
||
|
|
SNIC_INFO("vNIC hid = %d\n", c->hid);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
snic_get_res_counts(struct snic *snic)
|
||
|
|
{
|
||
|
|
snic->wq_count = svnic_dev_get_res_count(snic->vdev, RES_TYPE_WQ);
|
||
|
|
SNIC_BUG_ON(snic->wq_count == 0);
|
||
|
|
snic->cq_count = svnic_dev_get_res_count(snic->vdev, RES_TYPE_CQ);
|
||
|
|
SNIC_BUG_ON(snic->cq_count == 0);
|
||
|
|
snic->intr_count = svnic_dev_get_res_count(snic->vdev,
|
||
|
|
RES_TYPE_INTR_CTRL);
|
||
|
|
SNIC_BUG_ON(snic->intr_count == 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
snic_free_vnic_res(struct snic *snic)
|
||
|
|
{
|
||
|
|
unsigned int i;
|
||
|
|
|
||
|
|
for (i = 0; i < snic->wq_count; i++)
|
||
|
|
svnic_wq_free(&snic->wq[i]);
|
||
|
|
|
||
|
|
for (i = 0; i < snic->cq_count; i++)
|
||
|
|
svnic_cq_free(&snic->cq[i]);
|
||
|
|
|
||
|
|
for (i = 0; i < snic->intr_count; i++)
|
||
|
|
svnic_intr_free(&snic->intr[i]);
|
||
|
|
}
|
||
|
|
|
||
|
|
int
|
||
|
|
snic_alloc_vnic_res(struct snic *snic)
|
||
|
|
{
|
||
|
|
enum vnic_dev_intr_mode intr_mode;
|
||
|
|
unsigned int mask_on_assertion;
|
||
|
|
unsigned int intr_offset;
|
||
|
|
unsigned int err_intr_enable;
|
||
|
|
unsigned int err_intr_offset;
|
||
|
|
unsigned int i;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
intr_mode = svnic_dev_get_intr_mode(snic->vdev);
|
||
|
|
|
||
|
|
SNIC_INFO("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"))));
|
||
|
|
|
||
|
|
/* only MSI-X is supported */
|
||
|
|
SNIC_BUG_ON(intr_mode != VNIC_DEV_INTR_MODE_MSIX);
|
||
|
|
|
||
|
|
SNIC_INFO("wq %d cq %d intr %d\n", snic->wq_count,
|
||
|
|
snic->cq_count,
|
||
|
|
snic->intr_count);
|
||
|
|
|
||
|
|
|
||
|
|
/* Allocate WQs used for SCSI IOs */
|
||
|
|
for (i = 0; i < snic->wq_count; i++) {
|
||
|
|
ret = svnic_wq_alloc(snic->vdev,
|
||
|
|
&snic->wq[i],
|
||
|
|
i,
|
||
|
|
snic->config.wq_enet_desc_count,
|
||
|
|
sizeof(struct wq_enet_desc));
|
||
|
|
if (ret)
|
||
|
|
goto error_cleanup;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* CQ for each WQ */
|
||
|
|
for (i = 0; i < snic->wq_count; i++) {
|
||
|
|
ret = svnic_cq_alloc(snic->vdev,
|
||
|
|
&snic->cq[i],
|
||
|
|
i,
|
||
|
|
snic->config.wq_enet_desc_count,
|
||
|
|
sizeof(struct cq_enet_wq_desc));
|
||
|
|
if (ret)
|
||
|
|
goto error_cleanup;
|
||
|
|
}
|
||
|
|
|
||
|
|
SNIC_BUG_ON(snic->cq_count != 2 * snic->wq_count);
|
||
|
|
/* CQ for FW TO host */
|
||
|
|
for (i = snic->wq_count; i < snic->cq_count; i++) {
|
||
|
|
ret = svnic_cq_alloc(snic->vdev,
|
||
|
|
&snic->cq[i],
|
||
|
|
i,
|
||
|
|
(snic->config.wq_enet_desc_count * 3),
|
||
|
|
sizeof(struct snic_fw_req));
|
||
|
|
if (ret)
|
||
|
|
goto error_cleanup;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (i = 0; i < snic->intr_count; i++) {
|
||
|
|
ret = svnic_intr_alloc(snic->vdev, &snic->intr[i], i);
|
||
|
|
if (ret)
|
||
|
|
goto error_cleanup;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Init WQ Resources.
|
||
|
|
* WQ[0 to n] points to CQ[0 to n-1]
|
||
|
|
* firmware to host comm points to CQ[n to m+1]
|
||
|
|
*/
|
||
|
|
err_intr_enable = 1;
|
||
|
|
err_intr_offset = snic->err_intr_offset;
|
||
|
|
|
||
|
|
for (i = 0; i < snic->wq_count; i++) {
|
||
|
|
svnic_wq_init(&snic->wq[i],
|
||
|
|
i,
|
||
|
|
err_intr_enable,
|
||
|
|
err_intr_offset);
|
||
|
|
}
|
||
|
|
|
||
|
|
for (i = 0; i < snic->cq_count; i++) {
|
||
|
|
intr_offset = i;
|
||
|
|
|
||
|
|
svnic_cq_init(&snic->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 */,
|
||
|
|
intr_offset,
|
||
|
|
0 /* cq_message_addr */);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Init INTR resources
|
||
|
|
* Assumption : snic is always in MSI-X mode
|
||
|
|
*/
|
||
|
|
SNIC_BUG_ON(intr_mode != VNIC_DEV_INTR_MODE_MSIX);
|
||
|
|
mask_on_assertion = 1;
|
||
|
|
|
||
|
|
for (i = 0; i < snic->intr_count; i++) {
|
||
|
|
svnic_intr_init(&snic->intr[i],
|
||
|
|
snic->config.intr_timer,
|
||
|
|
snic->config.intr_timer_type,
|
||
|
|
mask_on_assertion);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* init the stats memory by making the first call here */
|
||
|
|
ret = svnic_dev_stats_dump(snic->vdev, &snic->stats);
|
||
|
|
if (ret) {
|
||
|
|
SNIC_HOST_ERR(snic->shost,
|
||
|
|
"svnic_dev_stats_dump failed - x%x\n",
|
||
|
|
ret);
|
||
|
|
goto error_cleanup;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Clear LIF stats */
|
||
|
|
svnic_dev_stats_clear(snic->vdev);
|
||
|
|
ret = 0;
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
error_cleanup:
|
||
|
|
snic_free_vnic_res(snic);
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
snic_log_q_error(struct snic *snic)
|
||
|
|
{
|
||
|
|
unsigned int i;
|
||
|
|
u32 err_status;
|
||
|
|
|
||
|
|
for (i = 0; i < snic->wq_count; i++) {
|
||
|
|
err_status = ioread32(&snic->wq[i].ctrl->error_status);
|
||
|
|
if (err_status)
|
||
|
|
SNIC_HOST_ERR(snic->shost,
|
||
|
|
"WQ[%d] error status %d\n",
|
||
|
|
i,
|
||
|
|
err_status);
|
||
|
|
}
|
||
|
|
} /* end of snic_log_q_error */
|