2096 lines
50 KiB
C
2096 lines
50 KiB
C
/*
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* QLogic iSCSI Offload Driver
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* Copyright (c) 2016 Cavium Inc.
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*
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* This software is available under the terms of the GNU General Public License
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* (GPL) Version 2, available from the file COPYING in the main directory of
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* this source tree.
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*/
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/kernel.h>
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#include <linux/if_arp.h>
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#include <scsi/iscsi_if.h>
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#include <linux/inet.h>
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#include <net/arp.h>
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#include <linux/list.h>
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#include <linux/kthread.h>
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#include <linux/mm.h>
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#include <linux/if_vlan.h>
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#include <linux/cpu.h>
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#include <scsi/scsi_cmnd.h>
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#include <scsi/scsi_device.h>
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#include <scsi/scsi_eh.h>
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#include <scsi/scsi_host.h>
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#include <scsi/scsi.h>
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#include "qedi.h"
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#include "qedi_gbl.h"
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#include "qedi_iscsi.h"
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static uint qedi_fw_debug;
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module_param(qedi_fw_debug, uint, 0644);
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MODULE_PARM_DESC(qedi_fw_debug, " Firmware debug level 0(default) to 3");
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uint qedi_dbg_log = QEDI_LOG_WARN | QEDI_LOG_SCSI_TM;
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module_param(qedi_dbg_log, uint, 0644);
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MODULE_PARM_DESC(qedi_dbg_log, " Default debug level");
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uint qedi_io_tracing;
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module_param(qedi_io_tracing, uint, 0644);
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MODULE_PARM_DESC(qedi_io_tracing,
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" Enable logging of SCSI requests/completions into trace buffer. (default off).");
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const struct qed_iscsi_ops *qedi_ops;
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static struct scsi_transport_template *qedi_scsi_transport;
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static struct pci_driver qedi_pci_driver;
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static DEFINE_PER_CPU(struct qedi_percpu_s, qedi_percpu);
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static LIST_HEAD(qedi_udev_list);
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/* Static function declaration */
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static int qedi_alloc_global_queues(struct qedi_ctx *qedi);
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static void qedi_free_global_queues(struct qedi_ctx *qedi);
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static struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid);
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static void qedi_reset_uio_rings(struct qedi_uio_dev *udev);
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static void qedi_ll2_free_skbs(struct qedi_ctx *qedi);
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static int qedi_iscsi_event_cb(void *context, u8 fw_event_code, void *fw_handle)
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{
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struct qedi_ctx *qedi;
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struct qedi_endpoint *qedi_ep;
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struct async_data *data;
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int rval = 0;
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if (!context || !fw_handle) {
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QEDI_ERR(NULL, "Recv event with ctx NULL\n");
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return -EINVAL;
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}
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qedi = (struct qedi_ctx *)context;
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QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
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"Recv Event %d fw_handle %p\n", fw_event_code, fw_handle);
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data = (struct async_data *)fw_handle;
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QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
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"cid=0x%x tid=0x%x err-code=0x%x fw-dbg-param=0x%x\n",
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data->cid, data->itid, data->error_code,
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data->fw_debug_param);
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qedi_ep = qedi->ep_tbl[data->cid];
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if (!qedi_ep) {
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QEDI_WARN(&qedi->dbg_ctx,
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"Cannot process event, ep already disconnected, cid=0x%x\n",
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data->cid);
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WARN_ON(1);
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return -ENODEV;
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}
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switch (fw_event_code) {
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case ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE:
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if (qedi_ep->state == EP_STATE_OFLDCONN_START)
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qedi_ep->state = EP_STATE_OFLDCONN_COMPL;
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wake_up_interruptible(&qedi_ep->tcp_ofld_wait);
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break;
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case ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE:
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qedi_ep->state = EP_STATE_DISCONN_COMPL;
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wake_up_interruptible(&qedi_ep->tcp_ofld_wait);
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break;
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case ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR:
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qedi_process_iscsi_error(qedi_ep, data);
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break;
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case ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD:
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case ISCSI_EVENT_TYPE_ASYN_SYN_RCVD:
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case ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME:
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case ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT:
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case ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT:
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case ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2:
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case ISCSI_EVENT_TYPE_TCP_CONN_ERROR:
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qedi_process_tcp_error(qedi_ep, data);
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break;
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default:
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QEDI_ERR(&qedi->dbg_ctx, "Recv Unknown Event %u\n",
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fw_event_code);
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}
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return rval;
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}
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static int qedi_uio_open(struct uio_info *uinfo, struct inode *inode)
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{
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struct qedi_uio_dev *udev = uinfo->priv;
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struct qedi_ctx *qedi = udev->qedi;
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if (!capable(CAP_NET_ADMIN))
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return -EPERM;
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if (udev->uio_dev != -1)
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return -EBUSY;
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rtnl_lock();
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udev->uio_dev = iminor(inode);
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qedi_reset_uio_rings(udev);
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set_bit(UIO_DEV_OPENED, &qedi->flags);
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rtnl_unlock();
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return 0;
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}
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static int qedi_uio_close(struct uio_info *uinfo, struct inode *inode)
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{
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struct qedi_uio_dev *udev = uinfo->priv;
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struct qedi_ctx *qedi = udev->qedi;
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udev->uio_dev = -1;
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clear_bit(UIO_DEV_OPENED, &qedi->flags);
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qedi_ll2_free_skbs(qedi);
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return 0;
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}
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static void __qedi_free_uio_rings(struct qedi_uio_dev *udev)
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{
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if (udev->uctrl) {
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free_page((unsigned long)udev->uctrl);
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udev->uctrl = NULL;
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}
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if (udev->ll2_ring) {
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free_page((unsigned long)udev->ll2_ring);
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udev->ll2_ring = NULL;
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}
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if (udev->ll2_buf) {
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free_pages((unsigned long)udev->ll2_buf, 2);
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udev->ll2_buf = NULL;
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}
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}
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static void __qedi_free_uio(struct qedi_uio_dev *udev)
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{
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uio_unregister_device(&udev->qedi_uinfo);
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__qedi_free_uio_rings(udev);
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pci_dev_put(udev->pdev);
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kfree(udev);
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}
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static void qedi_free_uio(struct qedi_uio_dev *udev)
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{
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if (!udev)
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return;
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list_del_init(&udev->list);
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__qedi_free_uio(udev);
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}
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static void qedi_reset_uio_rings(struct qedi_uio_dev *udev)
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{
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struct qedi_ctx *qedi = NULL;
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struct qedi_uio_ctrl *uctrl = NULL;
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qedi = udev->qedi;
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uctrl = udev->uctrl;
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spin_lock_bh(&qedi->ll2_lock);
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uctrl->host_rx_cons = 0;
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uctrl->hw_rx_prod = 0;
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uctrl->hw_rx_bd_prod = 0;
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uctrl->host_rx_bd_cons = 0;
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memset(udev->ll2_ring, 0, udev->ll2_ring_size);
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memset(udev->ll2_buf, 0, udev->ll2_buf_size);
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spin_unlock_bh(&qedi->ll2_lock);
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}
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static int __qedi_alloc_uio_rings(struct qedi_uio_dev *udev)
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{
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int rc = 0;
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if (udev->ll2_ring || udev->ll2_buf)
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return rc;
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/* Memory for control area. */
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udev->uctrl = (void *)get_zeroed_page(GFP_KERNEL);
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if (!udev->uctrl)
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return -ENOMEM;
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/* Allocating memory for LL2 ring */
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udev->ll2_ring_size = QEDI_PAGE_SIZE;
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udev->ll2_ring = (void *)get_zeroed_page(GFP_KERNEL | __GFP_COMP);
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if (!udev->ll2_ring) {
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rc = -ENOMEM;
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goto exit_alloc_ring;
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}
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/* Allocating memory for Tx/Rx pkt buffer */
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udev->ll2_buf_size = TX_RX_RING * LL2_SINGLE_BUF_SIZE;
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udev->ll2_buf_size = QEDI_PAGE_ALIGN(udev->ll2_buf_size);
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udev->ll2_buf = (void *)__get_free_pages(GFP_KERNEL | __GFP_COMP |
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__GFP_ZERO, 2);
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if (!udev->ll2_buf) {
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rc = -ENOMEM;
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goto exit_alloc_buf;
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}
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return rc;
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exit_alloc_buf:
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free_page((unsigned long)udev->ll2_ring);
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udev->ll2_ring = NULL;
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exit_alloc_ring:
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return rc;
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}
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static int qedi_alloc_uio_rings(struct qedi_ctx *qedi)
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{
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struct qedi_uio_dev *udev = NULL;
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int rc = 0;
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list_for_each_entry(udev, &qedi_udev_list, list) {
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if (udev->pdev == qedi->pdev) {
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udev->qedi = qedi;
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if (__qedi_alloc_uio_rings(udev)) {
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udev->qedi = NULL;
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return -ENOMEM;
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}
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qedi->udev = udev;
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return 0;
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}
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}
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udev = kzalloc(sizeof(*udev), GFP_KERNEL);
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if (!udev) {
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rc = -ENOMEM;
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goto err_udev;
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}
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udev->uio_dev = -1;
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udev->qedi = qedi;
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udev->pdev = qedi->pdev;
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rc = __qedi_alloc_uio_rings(udev);
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if (rc)
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goto err_uctrl;
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list_add(&udev->list, &qedi_udev_list);
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pci_dev_get(udev->pdev);
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qedi->udev = udev;
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udev->tx_pkt = udev->ll2_buf;
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udev->rx_pkt = udev->ll2_buf + LL2_SINGLE_BUF_SIZE;
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return 0;
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err_uctrl:
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kfree(udev);
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err_udev:
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return -ENOMEM;
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}
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static int qedi_init_uio(struct qedi_ctx *qedi)
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{
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struct qedi_uio_dev *udev = qedi->udev;
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struct uio_info *uinfo;
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int ret = 0;
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if (!udev)
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return -ENOMEM;
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uinfo = &udev->qedi_uinfo;
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uinfo->mem[0].addr = (unsigned long)udev->uctrl;
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uinfo->mem[0].size = sizeof(struct qedi_uio_ctrl);
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uinfo->mem[0].memtype = UIO_MEM_LOGICAL;
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uinfo->mem[1].addr = (unsigned long)udev->ll2_ring;
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uinfo->mem[1].size = udev->ll2_ring_size;
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uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
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uinfo->mem[2].addr = (unsigned long)udev->ll2_buf;
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uinfo->mem[2].size = udev->ll2_buf_size;
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uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
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uinfo->name = "qedi_uio";
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uinfo->version = QEDI_MODULE_VERSION;
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uinfo->irq = UIO_IRQ_CUSTOM;
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uinfo->open = qedi_uio_open;
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uinfo->release = qedi_uio_close;
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if (udev->uio_dev == -1) {
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if (!uinfo->priv) {
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uinfo->priv = udev;
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ret = uio_register_device(&udev->pdev->dev, uinfo);
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if (ret) {
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QEDI_ERR(&qedi->dbg_ctx,
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"UIO registration failed\n");
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}
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}
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}
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return ret;
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}
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static int qedi_alloc_and_init_sb(struct qedi_ctx *qedi,
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struct qed_sb_info *sb_info, u16 sb_id)
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{
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struct status_block *sb_virt;
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dma_addr_t sb_phys;
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int ret;
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sb_virt = dma_alloc_coherent(&qedi->pdev->dev,
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sizeof(struct status_block), &sb_phys,
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GFP_KERNEL);
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if (!sb_virt) {
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QEDI_ERR(&qedi->dbg_ctx,
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"Status block allocation failed for id = %d.\n",
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sb_id);
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return -ENOMEM;
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}
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ret = qedi_ops->common->sb_init(qedi->cdev, sb_info, sb_virt, sb_phys,
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sb_id, QED_SB_TYPE_STORAGE);
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if (ret) {
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QEDI_ERR(&qedi->dbg_ctx,
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"Status block initialization failed for id = %d.\n",
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sb_id);
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return ret;
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}
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return 0;
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}
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static void qedi_free_sb(struct qedi_ctx *qedi)
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{
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struct qed_sb_info *sb_info;
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int id;
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for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
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sb_info = &qedi->sb_array[id];
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if (sb_info->sb_virt)
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dma_free_coherent(&qedi->pdev->dev,
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sizeof(*sb_info->sb_virt),
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(void *)sb_info->sb_virt,
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sb_info->sb_phys);
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}
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}
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static void qedi_free_fp(struct qedi_ctx *qedi)
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{
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kfree(qedi->fp_array);
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kfree(qedi->sb_array);
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}
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static void qedi_destroy_fp(struct qedi_ctx *qedi)
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{
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qedi_free_sb(qedi);
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qedi_free_fp(qedi);
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}
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static int qedi_alloc_fp(struct qedi_ctx *qedi)
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{
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int ret = 0;
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qedi->fp_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi),
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sizeof(struct qedi_fastpath), GFP_KERNEL);
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if (!qedi->fp_array) {
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QEDI_ERR(&qedi->dbg_ctx,
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"fastpath fp array allocation failed.\n");
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return -ENOMEM;
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}
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qedi->sb_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi),
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sizeof(struct qed_sb_info), GFP_KERNEL);
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if (!qedi->sb_array) {
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QEDI_ERR(&qedi->dbg_ctx,
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"fastpath sb array allocation failed.\n");
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ret = -ENOMEM;
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goto free_fp;
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}
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return ret;
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free_fp:
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qedi_free_fp(qedi);
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return ret;
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}
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static void qedi_int_fp(struct qedi_ctx *qedi)
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{
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struct qedi_fastpath *fp;
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int id;
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memset(qedi->fp_array, 0, MIN_NUM_CPUS_MSIX(qedi) *
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sizeof(*qedi->fp_array));
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memset(qedi->sb_array, 0, MIN_NUM_CPUS_MSIX(qedi) *
|
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sizeof(*qedi->sb_array));
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|
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for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
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fp = &qedi->fp_array[id];
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fp->sb_info = &qedi->sb_array[id];
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fp->sb_id = id;
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fp->qedi = qedi;
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snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
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"qedi", id);
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|
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/* fp_array[i] ---- irq cookie
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* So init data which is needed in int ctx
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*/
|
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}
|
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}
|
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|
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static int qedi_prepare_fp(struct qedi_ctx *qedi)
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{
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struct qedi_fastpath *fp;
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int id, ret = 0;
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ret = qedi_alloc_fp(qedi);
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if (ret)
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goto err;
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qedi_int_fp(qedi);
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for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
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fp = &qedi->fp_array[id];
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ret = qedi_alloc_and_init_sb(qedi, fp->sb_info, fp->sb_id);
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if (ret) {
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QEDI_ERR(&qedi->dbg_ctx,
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"SB allocation and initialization failed.\n");
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ret = -EIO;
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goto err_init;
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}
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}
|
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|
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return 0;
|
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|
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err_init:
|
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qedi_free_sb(qedi);
|
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qedi_free_fp(qedi);
|
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err:
|
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return ret;
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}
|
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|
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static int qedi_setup_cid_que(struct qedi_ctx *qedi)
|
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{
|
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int i;
|
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|
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qedi->cid_que.cid_que_base = kmalloc_array(qedi->max_active_conns,
|
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sizeof(u32), GFP_KERNEL);
|
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if (!qedi->cid_que.cid_que_base)
|
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return -ENOMEM;
|
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|
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qedi->cid_que.conn_cid_tbl = kmalloc_array(qedi->max_active_conns,
|
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sizeof(struct qedi_conn *),
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GFP_KERNEL);
|
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if (!qedi->cid_que.conn_cid_tbl) {
|
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kfree(qedi->cid_que.cid_que_base);
|
|
qedi->cid_que.cid_que_base = NULL;
|
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return -ENOMEM;
|
|
}
|
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|
|
qedi->cid_que.cid_que = (u32 *)qedi->cid_que.cid_que_base;
|
|
qedi->cid_que.cid_q_prod_idx = 0;
|
|
qedi->cid_que.cid_q_cons_idx = 0;
|
|
qedi->cid_que.cid_q_max_idx = qedi->max_active_conns;
|
|
qedi->cid_que.cid_free_cnt = qedi->max_active_conns;
|
|
|
|
for (i = 0; i < qedi->max_active_conns; i++) {
|
|
qedi->cid_que.cid_que[i] = i;
|
|
qedi->cid_que.conn_cid_tbl[i] = NULL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void qedi_release_cid_que(struct qedi_ctx *qedi)
|
|
{
|
|
kfree(qedi->cid_que.cid_que_base);
|
|
qedi->cid_que.cid_que_base = NULL;
|
|
|
|
kfree(qedi->cid_que.conn_cid_tbl);
|
|
qedi->cid_que.conn_cid_tbl = NULL;
|
|
}
|
|
|
|
static int qedi_init_id_tbl(struct qedi_portid_tbl *id_tbl, u16 size,
|
|
u16 start_id, u16 next)
|
|
{
|
|
id_tbl->start = start_id;
|
|
id_tbl->max = size;
|
|
id_tbl->next = next;
|
|
spin_lock_init(&id_tbl->lock);
|
|
id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL);
|
|
if (!id_tbl->table)
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void qedi_free_id_tbl(struct qedi_portid_tbl *id_tbl)
|
|
{
|
|
kfree(id_tbl->table);
|
|
id_tbl->table = NULL;
|
|
}
|
|
|
|
int qedi_alloc_id(struct qedi_portid_tbl *id_tbl, u16 id)
|
|
{
|
|
int ret = -1;
|
|
|
|
id -= id_tbl->start;
|
|
if (id >= id_tbl->max)
|
|
return ret;
|
|
|
|
spin_lock(&id_tbl->lock);
|
|
if (!test_bit(id, id_tbl->table)) {
|
|
set_bit(id, id_tbl->table);
|
|
ret = 0;
|
|
}
|
|
spin_unlock(&id_tbl->lock);
|
|
return ret;
|
|
}
|
|
|
|
u16 qedi_alloc_new_id(struct qedi_portid_tbl *id_tbl)
|
|
{
|
|
u16 id;
|
|
|
|
spin_lock(&id_tbl->lock);
|
|
id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
|
|
if (id >= id_tbl->max) {
|
|
id = QEDI_LOCAL_PORT_INVALID;
|
|
if (id_tbl->next != 0) {
|
|
id = find_first_zero_bit(id_tbl->table, id_tbl->next);
|
|
if (id >= id_tbl->next)
|
|
id = QEDI_LOCAL_PORT_INVALID;
|
|
}
|
|
}
|
|
|
|
if (id < id_tbl->max) {
|
|
set_bit(id, id_tbl->table);
|
|
id_tbl->next = (id + 1) & (id_tbl->max - 1);
|
|
id += id_tbl->start;
|
|
}
|
|
|
|
spin_unlock(&id_tbl->lock);
|
|
|
|
return id;
|
|
}
|
|
|
|
void qedi_free_id(struct qedi_portid_tbl *id_tbl, u16 id)
|
|
{
|
|
if (id == QEDI_LOCAL_PORT_INVALID)
|
|
return;
|
|
|
|
id -= id_tbl->start;
|
|
if (id >= id_tbl->max)
|
|
return;
|
|
|
|
clear_bit(id, id_tbl->table);
|
|
}
|
|
|
|
static void qedi_cm_free_mem(struct qedi_ctx *qedi)
|
|
{
|
|
kfree(qedi->ep_tbl);
|
|
qedi->ep_tbl = NULL;
|
|
qedi_free_id_tbl(&qedi->lcl_port_tbl);
|
|
}
|
|
|
|
static int qedi_cm_alloc_mem(struct qedi_ctx *qedi)
|
|
{
|
|
u16 port_id;
|
|
|
|
qedi->ep_tbl = kzalloc((qedi->max_active_conns *
|
|
sizeof(struct qedi_endpoint *)), GFP_KERNEL);
|
|
if (!qedi->ep_tbl)
|
|
return -ENOMEM;
|
|
port_id = prandom_u32() % QEDI_LOCAL_PORT_RANGE;
|
|
if (qedi_init_id_tbl(&qedi->lcl_port_tbl, QEDI_LOCAL_PORT_RANGE,
|
|
QEDI_LOCAL_PORT_MIN, port_id)) {
|
|
qedi_cm_free_mem(qedi);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct qedi_ctx *qedi_host_alloc(struct pci_dev *pdev)
|
|
{
|
|
struct Scsi_Host *shost;
|
|
struct qedi_ctx *qedi = NULL;
|
|
|
|
shost = iscsi_host_alloc(&qedi_host_template,
|
|
sizeof(struct qedi_ctx), 0);
|
|
if (!shost) {
|
|
QEDI_ERR(NULL, "Could not allocate shost\n");
|
|
goto exit_setup_shost;
|
|
}
|
|
|
|
shost->max_id = QEDI_MAX_ISCSI_CONNS_PER_HBA;
|
|
shost->max_channel = 0;
|
|
shost->max_lun = ~0;
|
|
shost->max_cmd_len = 16;
|
|
shost->transportt = qedi_scsi_transport;
|
|
|
|
qedi = iscsi_host_priv(shost);
|
|
memset(qedi, 0, sizeof(*qedi));
|
|
qedi->shost = shost;
|
|
qedi->dbg_ctx.host_no = shost->host_no;
|
|
qedi->pdev = pdev;
|
|
qedi->dbg_ctx.pdev = pdev;
|
|
qedi->max_active_conns = ISCSI_MAX_SESS_PER_HBA;
|
|
qedi->max_sqes = QEDI_SQ_SIZE;
|
|
|
|
if (shost_use_blk_mq(shost))
|
|
shost->nr_hw_queues = MIN_NUM_CPUS_MSIX(qedi);
|
|
|
|
pci_set_drvdata(pdev, qedi);
|
|
|
|
exit_setup_shost:
|
|
return qedi;
|
|
}
|
|
|
|
static int qedi_ll2_rx(void *cookie, struct sk_buff *skb, u32 arg1, u32 arg2)
|
|
{
|
|
struct qedi_ctx *qedi = (struct qedi_ctx *)cookie;
|
|
struct qedi_uio_dev *udev;
|
|
struct qedi_uio_ctrl *uctrl;
|
|
struct skb_work_list *work;
|
|
u32 prod;
|
|
|
|
if (!qedi) {
|
|
QEDI_ERR(NULL, "qedi is NULL\n");
|
|
return -1;
|
|
}
|
|
|
|
if (!test_bit(UIO_DEV_OPENED, &qedi->flags)) {
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UIO,
|
|
"UIO DEV is not opened\n");
|
|
kfree_skb(skb);
|
|
return 0;
|
|
}
|
|
|
|
udev = qedi->udev;
|
|
uctrl = udev->uctrl;
|
|
|
|
work = kzalloc(sizeof(*work), GFP_ATOMIC);
|
|
if (!work) {
|
|
QEDI_WARN(&qedi->dbg_ctx,
|
|
"Could not allocate work so dropping frame.\n");
|
|
kfree_skb(skb);
|
|
return 0;
|
|
}
|
|
|
|
INIT_LIST_HEAD(&work->list);
|
|
work->skb = skb;
|
|
|
|
if (skb_vlan_tag_present(skb))
|
|
work->vlan_id = skb_vlan_tag_get(skb);
|
|
|
|
if (work->vlan_id)
|
|
__vlan_insert_tag(work->skb, htons(ETH_P_8021Q), work->vlan_id);
|
|
|
|
spin_lock_bh(&qedi->ll2_lock);
|
|
list_add_tail(&work->list, &qedi->ll2_skb_list);
|
|
|
|
++uctrl->hw_rx_prod_cnt;
|
|
prod = (uctrl->hw_rx_prod + 1) % RX_RING;
|
|
if (prod != uctrl->host_rx_cons) {
|
|
uctrl->hw_rx_prod = prod;
|
|
spin_unlock_bh(&qedi->ll2_lock);
|
|
wake_up_process(qedi->ll2_recv_thread);
|
|
return 0;
|
|
}
|
|
|
|
spin_unlock_bh(&qedi->ll2_lock);
|
|
return 0;
|
|
}
|
|
|
|
/* map this skb to iscsiuio mmaped region */
|
|
static int qedi_ll2_process_skb(struct qedi_ctx *qedi, struct sk_buff *skb,
|
|
u16 vlan_id)
|
|
{
|
|
struct qedi_uio_dev *udev = NULL;
|
|
struct qedi_uio_ctrl *uctrl = NULL;
|
|
struct qedi_rx_bd rxbd;
|
|
struct qedi_rx_bd *p_rxbd;
|
|
u32 rx_bd_prod;
|
|
void *pkt;
|
|
int len = 0;
|
|
|
|
if (!qedi) {
|
|
QEDI_ERR(NULL, "qedi is NULL\n");
|
|
return -1;
|
|
}
|
|
|
|
udev = qedi->udev;
|
|
uctrl = udev->uctrl;
|
|
pkt = udev->rx_pkt + (uctrl->hw_rx_prod * LL2_SINGLE_BUF_SIZE);
|
|
len = min_t(u32, skb->len, (u32)LL2_SINGLE_BUF_SIZE);
|
|
memcpy(pkt, skb->data, len);
|
|
|
|
memset(&rxbd, 0, sizeof(rxbd));
|
|
rxbd.rx_pkt_index = uctrl->hw_rx_prod;
|
|
rxbd.rx_pkt_len = len;
|
|
rxbd.vlan_id = vlan_id;
|
|
|
|
uctrl->hw_rx_bd_prod = (uctrl->hw_rx_bd_prod + 1) % QEDI_NUM_RX_BD;
|
|
rx_bd_prod = uctrl->hw_rx_bd_prod;
|
|
p_rxbd = (struct qedi_rx_bd *)udev->ll2_ring;
|
|
p_rxbd += rx_bd_prod;
|
|
|
|
memcpy(p_rxbd, &rxbd, sizeof(rxbd));
|
|
|
|
/* notify the iscsiuio about new packet */
|
|
uio_event_notify(&udev->qedi_uinfo);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void qedi_ll2_free_skbs(struct qedi_ctx *qedi)
|
|
{
|
|
struct skb_work_list *work, *work_tmp;
|
|
|
|
spin_lock_bh(&qedi->ll2_lock);
|
|
list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, list) {
|
|
list_del(&work->list);
|
|
if (work->skb)
|
|
kfree_skb(work->skb);
|
|
kfree(work);
|
|
}
|
|
spin_unlock_bh(&qedi->ll2_lock);
|
|
}
|
|
|
|
static int qedi_ll2_recv_thread(void *arg)
|
|
{
|
|
struct qedi_ctx *qedi = (struct qedi_ctx *)arg;
|
|
struct skb_work_list *work, *work_tmp;
|
|
|
|
set_user_nice(current, -20);
|
|
|
|
while (!kthread_should_stop()) {
|
|
spin_lock_bh(&qedi->ll2_lock);
|
|
list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list,
|
|
list) {
|
|
list_del(&work->list);
|
|
qedi_ll2_process_skb(qedi, work->skb, work->vlan_id);
|
|
kfree_skb(work->skb);
|
|
kfree(work);
|
|
}
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
|
spin_unlock_bh(&qedi->ll2_lock);
|
|
schedule();
|
|
}
|
|
|
|
__set_current_state(TASK_RUNNING);
|
|
return 0;
|
|
}
|
|
|
|
static int qedi_set_iscsi_pf_param(struct qedi_ctx *qedi)
|
|
{
|
|
u8 num_sq_pages;
|
|
u32 log_page_size;
|
|
int rval = 0;
|
|
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "Min number of MSIX %d\n",
|
|
MIN_NUM_CPUS_MSIX(qedi));
|
|
|
|
num_sq_pages = (MAX_OUSTANDING_TASKS_PER_CON * 8) / PAGE_SIZE;
|
|
|
|
qedi->num_queues = MIN_NUM_CPUS_MSIX(qedi);
|
|
|
|
memset(&qedi->pf_params.iscsi_pf_params, 0,
|
|
sizeof(qedi->pf_params.iscsi_pf_params));
|
|
|
|
qedi->p_cpuq = pci_alloc_consistent(qedi->pdev,
|
|
qedi->num_queues * sizeof(struct qedi_glbl_q_params),
|
|
&qedi->hw_p_cpuq);
|
|
if (!qedi->p_cpuq) {
|
|
QEDI_ERR(&qedi->dbg_ctx, "pci_alloc_consistent fail\n");
|
|
rval = -1;
|
|
goto err_alloc_mem;
|
|
}
|
|
|
|
rval = qedi_alloc_global_queues(qedi);
|
|
if (rval) {
|
|
QEDI_ERR(&qedi->dbg_ctx, "Global queue allocation failed.\n");
|
|
rval = -1;
|
|
goto err_alloc_mem;
|
|
}
|
|
|
|
qedi->pf_params.iscsi_pf_params.num_cons = QEDI_MAX_ISCSI_CONNS_PER_HBA;
|
|
qedi->pf_params.iscsi_pf_params.num_tasks = QEDI_MAX_ISCSI_TASK;
|
|
qedi->pf_params.iscsi_pf_params.half_way_close_timeout = 10;
|
|
qedi->pf_params.iscsi_pf_params.num_sq_pages_in_ring = num_sq_pages;
|
|
qedi->pf_params.iscsi_pf_params.num_r2tq_pages_in_ring = num_sq_pages;
|
|
qedi->pf_params.iscsi_pf_params.num_uhq_pages_in_ring = num_sq_pages;
|
|
qedi->pf_params.iscsi_pf_params.num_queues = qedi->num_queues;
|
|
qedi->pf_params.iscsi_pf_params.debug_mode = qedi_fw_debug;
|
|
qedi->pf_params.iscsi_pf_params.two_msl_timer = 4000;
|
|
qedi->pf_params.iscsi_pf_params.max_fin_rt = 2;
|
|
|
|
for (log_page_size = 0 ; log_page_size < 32 ; log_page_size++) {
|
|
if ((1 << log_page_size) == PAGE_SIZE)
|
|
break;
|
|
}
|
|
qedi->pf_params.iscsi_pf_params.log_page_size = log_page_size;
|
|
|
|
qedi->pf_params.iscsi_pf_params.glbl_q_params_addr =
|
|
(u64)qedi->hw_p_cpuq;
|
|
|
|
/* RQ BDQ initializations.
|
|
* rq_num_entries: suggested value for Initiator is 16 (4KB RQ)
|
|
* rqe_log_size: 8 for 256B RQE
|
|
*/
|
|
qedi->pf_params.iscsi_pf_params.rqe_log_size = 8;
|
|
/* BDQ address and size */
|
|
qedi->pf_params.iscsi_pf_params.bdq_pbl_base_addr[BDQ_ID_RQ] =
|
|
qedi->bdq_pbl_list_dma;
|
|
qedi->pf_params.iscsi_pf_params.bdq_pbl_num_entries[BDQ_ID_RQ] =
|
|
qedi->bdq_pbl_list_num_entries;
|
|
qedi->pf_params.iscsi_pf_params.rq_buffer_size = QEDI_BDQ_BUF_SIZE;
|
|
|
|
/* cq_num_entries: num_tasks + rq_num_entries */
|
|
qedi->pf_params.iscsi_pf_params.cq_num_entries = 2048;
|
|
|
|
qedi->pf_params.iscsi_pf_params.gl_rq_pi = QEDI_PROTO_CQ_PROD_IDX;
|
|
qedi->pf_params.iscsi_pf_params.gl_cmd_pi = 1;
|
|
qedi->pf_params.iscsi_pf_params.ooo_enable = 1;
|
|
|
|
err_alloc_mem:
|
|
return rval;
|
|
}
|
|
|
|
/* Free DMA coherent memory for array of queue pointers we pass to qed */
|
|
static void qedi_free_iscsi_pf_param(struct qedi_ctx *qedi)
|
|
{
|
|
size_t size = 0;
|
|
|
|
if (qedi->p_cpuq) {
|
|
size = qedi->num_queues * sizeof(struct qedi_glbl_q_params);
|
|
pci_free_consistent(qedi->pdev, size, qedi->p_cpuq,
|
|
qedi->hw_p_cpuq);
|
|
}
|
|
|
|
qedi_free_global_queues(qedi);
|
|
|
|
kfree(qedi->global_queues);
|
|
}
|
|
|
|
static void qedi_link_update(void *dev, struct qed_link_output *link)
|
|
{
|
|
struct qedi_ctx *qedi = (struct qedi_ctx *)dev;
|
|
|
|
if (link->link_up) {
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Link Up event.\n");
|
|
atomic_set(&qedi->link_state, QEDI_LINK_UP);
|
|
} else {
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
|
|
"Link Down event.\n");
|
|
atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
|
|
}
|
|
}
|
|
|
|
static struct qed_iscsi_cb_ops qedi_cb_ops = {
|
|
{
|
|
.link_update = qedi_link_update,
|
|
}
|
|
};
|
|
|
|
static int qedi_queue_cqe(struct qedi_ctx *qedi, union iscsi_cqe *cqe,
|
|
u16 que_idx, struct qedi_percpu_s *p)
|
|
{
|
|
struct qedi_work *qedi_work;
|
|
struct qedi_conn *q_conn;
|
|
struct iscsi_conn *conn;
|
|
struct qedi_cmd *qedi_cmd;
|
|
u32 iscsi_cid;
|
|
int rc = 0;
|
|
|
|
iscsi_cid = cqe->cqe_common.conn_id;
|
|
q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
|
|
if (!q_conn) {
|
|
QEDI_WARN(&qedi->dbg_ctx,
|
|
"Session no longer exists for cid=0x%x!!\n",
|
|
iscsi_cid);
|
|
return -1;
|
|
}
|
|
conn = q_conn->cls_conn->dd_data;
|
|
|
|
switch (cqe->cqe_common.cqe_type) {
|
|
case ISCSI_CQE_TYPE_SOLICITED:
|
|
case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE:
|
|
qedi_cmd = qedi_get_cmd_from_tid(qedi, cqe->cqe_solicited.itid);
|
|
if (!qedi_cmd) {
|
|
rc = -1;
|
|
break;
|
|
}
|
|
INIT_LIST_HEAD(&qedi_cmd->cqe_work.list);
|
|
qedi_cmd->cqe_work.qedi = qedi;
|
|
memcpy(&qedi_cmd->cqe_work.cqe, cqe, sizeof(union iscsi_cqe));
|
|
qedi_cmd->cqe_work.que_idx = que_idx;
|
|
qedi_cmd->cqe_work.is_solicited = true;
|
|
list_add_tail(&qedi_cmd->cqe_work.list, &p->work_list);
|
|
break;
|
|
case ISCSI_CQE_TYPE_UNSOLICITED:
|
|
case ISCSI_CQE_TYPE_DUMMY:
|
|
case ISCSI_CQE_TYPE_TASK_CLEANUP:
|
|
qedi_work = kzalloc(sizeof(*qedi_work), GFP_ATOMIC);
|
|
if (!qedi_work) {
|
|
rc = -1;
|
|
break;
|
|
}
|
|
INIT_LIST_HEAD(&qedi_work->list);
|
|
qedi_work->qedi = qedi;
|
|
memcpy(&qedi_work->cqe, cqe, sizeof(union iscsi_cqe));
|
|
qedi_work->que_idx = que_idx;
|
|
qedi_work->is_solicited = false;
|
|
list_add_tail(&qedi_work->list, &p->work_list);
|
|
break;
|
|
default:
|
|
rc = -1;
|
|
QEDI_ERR(&qedi->dbg_ctx, "FW Error cqe.\n");
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
static bool qedi_process_completions(struct qedi_fastpath *fp)
|
|
{
|
|
struct qedi_ctx *qedi = fp->qedi;
|
|
struct qed_sb_info *sb_info = fp->sb_info;
|
|
struct status_block *sb = sb_info->sb_virt;
|
|
struct qedi_percpu_s *p = NULL;
|
|
struct global_queue *que;
|
|
u16 prod_idx;
|
|
unsigned long flags;
|
|
union iscsi_cqe *cqe;
|
|
int cpu;
|
|
int ret;
|
|
|
|
/* Get the current firmware producer index */
|
|
prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
|
|
|
|
if (prod_idx >= QEDI_CQ_SIZE)
|
|
prod_idx = prod_idx % QEDI_CQ_SIZE;
|
|
|
|
que = qedi->global_queues[fp->sb_id];
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
|
|
"Before: global queue=%p prod_idx=%d cons_idx=%d, sb_id=%d\n",
|
|
que, prod_idx, que->cq_cons_idx, fp->sb_id);
|
|
|
|
qedi->intr_cpu = fp->sb_id;
|
|
cpu = smp_processor_id();
|
|
p = &per_cpu(qedi_percpu, cpu);
|
|
|
|
if (unlikely(!p->iothread))
|
|
WARN_ON(1);
|
|
|
|
spin_lock_irqsave(&p->p_work_lock, flags);
|
|
while (que->cq_cons_idx != prod_idx) {
|
|
cqe = &que->cq[que->cq_cons_idx];
|
|
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
|
|
"cqe=%p prod_idx=%d cons_idx=%d.\n",
|
|
cqe, prod_idx, que->cq_cons_idx);
|
|
|
|
ret = qedi_queue_cqe(qedi, cqe, fp->sb_id, p);
|
|
if (ret)
|
|
continue;
|
|
|
|
que->cq_cons_idx++;
|
|
if (que->cq_cons_idx == QEDI_CQ_SIZE)
|
|
que->cq_cons_idx = 0;
|
|
}
|
|
wake_up_process(p->iothread);
|
|
spin_unlock_irqrestore(&p->p_work_lock, flags);
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool qedi_fp_has_work(struct qedi_fastpath *fp)
|
|
{
|
|
struct qedi_ctx *qedi = fp->qedi;
|
|
struct global_queue *que;
|
|
struct qed_sb_info *sb_info = fp->sb_info;
|
|
struct status_block *sb = sb_info->sb_virt;
|
|
u16 prod_idx;
|
|
|
|
barrier();
|
|
|
|
/* Get the current firmware producer index */
|
|
prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
|
|
|
|
/* Get the pointer to the global CQ this completion is on */
|
|
que = qedi->global_queues[fp->sb_id];
|
|
|
|
/* prod idx wrap around uint16 */
|
|
if (prod_idx >= QEDI_CQ_SIZE)
|
|
prod_idx = prod_idx % QEDI_CQ_SIZE;
|
|
|
|
return (que->cq_cons_idx != prod_idx);
|
|
}
|
|
|
|
/* MSI-X fastpath handler code */
|
|
static irqreturn_t qedi_msix_handler(int irq, void *dev_id)
|
|
{
|
|
struct qedi_fastpath *fp = dev_id;
|
|
struct qedi_ctx *qedi = fp->qedi;
|
|
bool wake_io_thread = true;
|
|
|
|
qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0);
|
|
|
|
process_again:
|
|
wake_io_thread = qedi_process_completions(fp);
|
|
if (wake_io_thread) {
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
|
|
"process already running\n");
|
|
}
|
|
|
|
if (qedi_fp_has_work(fp) == 0)
|
|
qed_sb_update_sb_idx(fp->sb_info);
|
|
|
|
/* Check for more work */
|
|
rmb();
|
|
|
|
if (qedi_fp_has_work(fp) == 0)
|
|
qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
|
|
else
|
|
goto process_again;
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
/* simd handler for MSI/INTa */
|
|
static void qedi_simd_int_handler(void *cookie)
|
|
{
|
|
/* Cookie is qedi_ctx struct */
|
|
struct qedi_ctx *qedi = (struct qedi_ctx *)cookie;
|
|
|
|
QEDI_WARN(&qedi->dbg_ctx, "qedi=%p.\n", qedi);
|
|
}
|
|
|
|
#define QEDI_SIMD_HANDLER_NUM 0
|
|
static void qedi_sync_free_irqs(struct qedi_ctx *qedi)
|
|
{
|
|
int i;
|
|
|
|
if (qedi->int_info.msix_cnt) {
|
|
for (i = 0; i < qedi->int_info.used_cnt; i++) {
|
|
synchronize_irq(qedi->int_info.msix[i].vector);
|
|
irq_set_affinity_hint(qedi->int_info.msix[i].vector,
|
|
NULL);
|
|
free_irq(qedi->int_info.msix[i].vector,
|
|
&qedi->fp_array[i]);
|
|
}
|
|
} else {
|
|
qedi_ops->common->simd_handler_clean(qedi->cdev,
|
|
QEDI_SIMD_HANDLER_NUM);
|
|
}
|
|
|
|
qedi->int_info.used_cnt = 0;
|
|
qedi_ops->common->set_fp_int(qedi->cdev, 0);
|
|
}
|
|
|
|
static int qedi_request_msix_irq(struct qedi_ctx *qedi)
|
|
{
|
|
int i, rc, cpu;
|
|
|
|
cpu = cpumask_first(cpu_online_mask);
|
|
for (i = 0; i < MIN_NUM_CPUS_MSIX(qedi); i++) {
|
|
rc = request_irq(qedi->int_info.msix[i].vector,
|
|
qedi_msix_handler, 0, "qedi",
|
|
&qedi->fp_array[i]);
|
|
|
|
if (rc) {
|
|
QEDI_WARN(&qedi->dbg_ctx, "request_irq failed.\n");
|
|
qedi_sync_free_irqs(qedi);
|
|
return rc;
|
|
}
|
|
qedi->int_info.used_cnt++;
|
|
rc = irq_set_affinity_hint(qedi->int_info.msix[i].vector,
|
|
get_cpu_mask(cpu));
|
|
cpu = cpumask_next(cpu, cpu_online_mask);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int qedi_setup_int(struct qedi_ctx *qedi)
|
|
{
|
|
int rc = 0;
|
|
|
|
rc = qedi_ops->common->set_fp_int(qedi->cdev, num_online_cpus());
|
|
rc = qedi_ops->common->get_fp_int(qedi->cdev, &qedi->int_info);
|
|
if (rc)
|
|
goto exit_setup_int;
|
|
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
|
|
"Number of msix_cnt = 0x%x num of cpus = 0x%x\n",
|
|
qedi->int_info.msix_cnt, num_online_cpus());
|
|
|
|
if (qedi->int_info.msix_cnt) {
|
|
rc = qedi_request_msix_irq(qedi);
|
|
goto exit_setup_int;
|
|
} else {
|
|
qedi_ops->common->simd_handler_config(qedi->cdev, &qedi,
|
|
QEDI_SIMD_HANDLER_NUM,
|
|
qedi_simd_int_handler);
|
|
qedi->int_info.used_cnt = 1;
|
|
}
|
|
|
|
exit_setup_int:
|
|
return rc;
|
|
}
|
|
|
|
static void qedi_free_bdq(struct qedi_ctx *qedi)
|
|
{
|
|
int i;
|
|
|
|
if (qedi->bdq_pbl_list)
|
|
dma_free_coherent(&qedi->pdev->dev, PAGE_SIZE,
|
|
qedi->bdq_pbl_list, qedi->bdq_pbl_list_dma);
|
|
|
|
if (qedi->bdq_pbl)
|
|
dma_free_coherent(&qedi->pdev->dev, qedi->bdq_pbl_mem_size,
|
|
qedi->bdq_pbl, qedi->bdq_pbl_dma);
|
|
|
|
for (i = 0; i < QEDI_BDQ_NUM; i++) {
|
|
if (qedi->bdq[i].buf_addr) {
|
|
dma_free_coherent(&qedi->pdev->dev, QEDI_BDQ_BUF_SIZE,
|
|
qedi->bdq[i].buf_addr,
|
|
qedi->bdq[i].buf_dma);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void qedi_free_global_queues(struct qedi_ctx *qedi)
|
|
{
|
|
int i;
|
|
struct global_queue **gl = qedi->global_queues;
|
|
|
|
for (i = 0; i < qedi->num_queues; i++) {
|
|
if (!gl[i])
|
|
continue;
|
|
|
|
if (gl[i]->cq)
|
|
dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_mem_size,
|
|
gl[i]->cq, gl[i]->cq_dma);
|
|
if (gl[i]->cq_pbl)
|
|
dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_pbl_size,
|
|
gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
|
|
|
|
kfree(gl[i]);
|
|
}
|
|
qedi_free_bdq(qedi);
|
|
}
|
|
|
|
static int qedi_alloc_bdq(struct qedi_ctx *qedi)
|
|
{
|
|
int i;
|
|
struct scsi_bd *pbl;
|
|
u64 *list;
|
|
dma_addr_t page;
|
|
|
|
/* Alloc dma memory for BDQ buffers */
|
|
for (i = 0; i < QEDI_BDQ_NUM; i++) {
|
|
qedi->bdq[i].buf_addr =
|
|
dma_alloc_coherent(&qedi->pdev->dev,
|
|
QEDI_BDQ_BUF_SIZE,
|
|
&qedi->bdq[i].buf_dma,
|
|
GFP_KERNEL);
|
|
if (!qedi->bdq[i].buf_addr) {
|
|
QEDI_ERR(&qedi->dbg_ctx,
|
|
"Could not allocate BDQ buffer %d.\n", i);
|
|
return -ENOMEM;
|
|
}
|
|
}
|
|
|
|
/* Alloc dma memory for BDQ page buffer list */
|
|
qedi->bdq_pbl_mem_size = QEDI_BDQ_NUM * sizeof(struct scsi_bd);
|
|
qedi->bdq_pbl_mem_size = ALIGN(qedi->bdq_pbl_mem_size, PAGE_SIZE);
|
|
qedi->rq_num_entries = qedi->bdq_pbl_mem_size / sizeof(struct scsi_bd);
|
|
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "rq_num_entries = %d.\n",
|
|
qedi->rq_num_entries);
|
|
|
|
qedi->bdq_pbl = dma_alloc_coherent(&qedi->pdev->dev,
|
|
qedi->bdq_pbl_mem_size,
|
|
&qedi->bdq_pbl_dma, GFP_KERNEL);
|
|
if (!qedi->bdq_pbl) {
|
|
QEDI_ERR(&qedi->dbg_ctx, "Could not allocate BDQ PBL.\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/*
|
|
* Populate BDQ PBL with physical and virtual address of individual
|
|
* BDQ buffers
|
|
*/
|
|
pbl = (struct scsi_bd *)qedi->bdq_pbl;
|
|
for (i = 0; i < QEDI_BDQ_NUM; i++) {
|
|
pbl->address.hi =
|
|
cpu_to_le32(QEDI_U64_HI(qedi->bdq[i].buf_dma));
|
|
pbl->address.lo =
|
|
cpu_to_le32(QEDI_U64_LO(qedi->bdq[i].buf_dma));
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
|
|
"pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx], idx [%d]\n",
|
|
pbl, pbl->address.hi, pbl->address.lo, i);
|
|
pbl->opaque.hi = 0;
|
|
pbl->opaque.lo = cpu_to_le32(QEDI_U64_LO(i));
|
|
pbl++;
|
|
}
|
|
|
|
/* Allocate list of PBL pages */
|
|
qedi->bdq_pbl_list = dma_alloc_coherent(&qedi->pdev->dev,
|
|
PAGE_SIZE,
|
|
&qedi->bdq_pbl_list_dma,
|
|
GFP_KERNEL);
|
|
if (!qedi->bdq_pbl_list) {
|
|
QEDI_ERR(&qedi->dbg_ctx,
|
|
"Could not allocate list of PBL pages.\n");
|
|
return -ENOMEM;
|
|
}
|
|
memset(qedi->bdq_pbl_list, 0, PAGE_SIZE);
|
|
|
|
/*
|
|
* Now populate PBL list with pages that contain pointers to the
|
|
* individual buffers.
|
|
*/
|
|
qedi->bdq_pbl_list_num_entries = qedi->bdq_pbl_mem_size / PAGE_SIZE;
|
|
list = (u64 *)qedi->bdq_pbl_list;
|
|
page = qedi->bdq_pbl_list_dma;
|
|
for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) {
|
|
*list = qedi->bdq_pbl_dma;
|
|
list++;
|
|
page += PAGE_SIZE;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int qedi_alloc_global_queues(struct qedi_ctx *qedi)
|
|
{
|
|
u32 *list;
|
|
int i;
|
|
int status = 0, rc;
|
|
u32 *pbl;
|
|
dma_addr_t page;
|
|
int num_pages;
|
|
|
|
/*
|
|
* Number of global queues (CQ / RQ). This should
|
|
* be <= number of available MSIX vectors for the PF
|
|
*/
|
|
if (!qedi->num_queues) {
|
|
QEDI_ERR(&qedi->dbg_ctx, "No MSI-X vectors available!\n");
|
|
return 1;
|
|
}
|
|
|
|
/* Make sure we allocated the PBL that will contain the physical
|
|
* addresses of our queues
|
|
*/
|
|
if (!qedi->p_cpuq) {
|
|
status = 1;
|
|
goto mem_alloc_failure;
|
|
}
|
|
|
|
qedi->global_queues = kzalloc((sizeof(struct global_queue *) *
|
|
qedi->num_queues), GFP_KERNEL);
|
|
if (!qedi->global_queues) {
|
|
QEDI_ERR(&qedi->dbg_ctx,
|
|
"Unable to allocate global queues array ptr memory\n");
|
|
return -ENOMEM;
|
|
}
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
|
|
"qedi->global_queues=%p.\n", qedi->global_queues);
|
|
|
|
/* Allocate DMA coherent buffers for BDQ */
|
|
rc = qedi_alloc_bdq(qedi);
|
|
if (rc)
|
|
goto mem_alloc_failure;
|
|
|
|
/* Allocate a CQ and an associated PBL for each MSI-X
|
|
* vector.
|
|
*/
|
|
for (i = 0; i < qedi->num_queues; i++) {
|
|
qedi->global_queues[i] =
|
|
kzalloc(sizeof(*qedi->global_queues[0]),
|
|
GFP_KERNEL);
|
|
if (!qedi->global_queues[i]) {
|
|
QEDI_ERR(&qedi->dbg_ctx,
|
|
"Unable to allocation global queue %d.\n", i);
|
|
goto mem_alloc_failure;
|
|
}
|
|
|
|
qedi->global_queues[i]->cq_mem_size =
|
|
(QEDI_CQ_SIZE + 8) * sizeof(union iscsi_cqe);
|
|
qedi->global_queues[i]->cq_mem_size =
|
|
(qedi->global_queues[i]->cq_mem_size +
|
|
(QEDI_PAGE_SIZE - 1));
|
|
|
|
qedi->global_queues[i]->cq_pbl_size =
|
|
(qedi->global_queues[i]->cq_mem_size /
|
|
QEDI_PAGE_SIZE) * sizeof(void *);
|
|
qedi->global_queues[i]->cq_pbl_size =
|
|
(qedi->global_queues[i]->cq_pbl_size +
|
|
(QEDI_PAGE_SIZE - 1));
|
|
|
|
qedi->global_queues[i]->cq =
|
|
dma_alloc_coherent(&qedi->pdev->dev,
|
|
qedi->global_queues[i]->cq_mem_size,
|
|
&qedi->global_queues[i]->cq_dma,
|
|
GFP_KERNEL);
|
|
|
|
if (!qedi->global_queues[i]->cq) {
|
|
QEDI_WARN(&qedi->dbg_ctx,
|
|
"Could not allocate cq.\n");
|
|
status = -ENOMEM;
|
|
goto mem_alloc_failure;
|
|
}
|
|
memset(qedi->global_queues[i]->cq, 0,
|
|
qedi->global_queues[i]->cq_mem_size);
|
|
|
|
qedi->global_queues[i]->cq_pbl =
|
|
dma_alloc_coherent(&qedi->pdev->dev,
|
|
qedi->global_queues[i]->cq_pbl_size,
|
|
&qedi->global_queues[i]->cq_pbl_dma,
|
|
GFP_KERNEL);
|
|
|
|
if (!qedi->global_queues[i]->cq_pbl) {
|
|
QEDI_WARN(&qedi->dbg_ctx,
|
|
"Could not allocate cq PBL.\n");
|
|
status = -ENOMEM;
|
|
goto mem_alloc_failure;
|
|
}
|
|
memset(qedi->global_queues[i]->cq_pbl, 0,
|
|
qedi->global_queues[i]->cq_pbl_size);
|
|
|
|
/* Create PBL */
|
|
num_pages = qedi->global_queues[i]->cq_mem_size /
|
|
QEDI_PAGE_SIZE;
|
|
page = qedi->global_queues[i]->cq_dma;
|
|
pbl = (u32 *)qedi->global_queues[i]->cq_pbl;
|
|
|
|
while (num_pages--) {
|
|
*pbl = (u32)page;
|
|
pbl++;
|
|
*pbl = (u32)((u64)page >> 32);
|
|
pbl++;
|
|
page += QEDI_PAGE_SIZE;
|
|
}
|
|
}
|
|
|
|
list = (u32 *)qedi->p_cpuq;
|
|
|
|
/*
|
|
* The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
|
|
* CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points
|
|
* to the physical address which contains an array of pointers to the
|
|
* physical addresses of the specific queue pages.
|
|
*/
|
|
for (i = 0; i < qedi->num_queues; i++) {
|
|
*list = (u32)qedi->global_queues[i]->cq_pbl_dma;
|
|
list++;
|
|
*list = (u32)((u64)qedi->global_queues[i]->cq_pbl_dma >> 32);
|
|
list++;
|
|
|
|
*list = (u32)0;
|
|
list++;
|
|
*list = (u32)((u64)0 >> 32);
|
|
list++;
|
|
}
|
|
|
|
return 0;
|
|
|
|
mem_alloc_failure:
|
|
qedi_free_global_queues(qedi);
|
|
return status;
|
|
}
|
|
|
|
int qedi_alloc_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep)
|
|
{
|
|
int rval = 0;
|
|
u32 *pbl;
|
|
dma_addr_t page;
|
|
int num_pages;
|
|
|
|
if (!ep)
|
|
return -EIO;
|
|
|
|
/* Calculate appropriate queue and PBL sizes */
|
|
ep->sq_mem_size = QEDI_SQ_SIZE * sizeof(struct iscsi_wqe);
|
|
ep->sq_mem_size += QEDI_PAGE_SIZE - 1;
|
|
|
|
ep->sq_pbl_size = (ep->sq_mem_size / QEDI_PAGE_SIZE) * sizeof(void *);
|
|
ep->sq_pbl_size = ep->sq_pbl_size + QEDI_PAGE_SIZE;
|
|
|
|
ep->sq = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_mem_size,
|
|
&ep->sq_dma, GFP_KERNEL);
|
|
if (!ep->sq) {
|
|
QEDI_WARN(&qedi->dbg_ctx,
|
|
"Could not allocate send queue.\n");
|
|
rval = -ENOMEM;
|
|
goto out;
|
|
}
|
|
memset(ep->sq, 0, ep->sq_mem_size);
|
|
|
|
ep->sq_pbl = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_pbl_size,
|
|
&ep->sq_pbl_dma, GFP_KERNEL);
|
|
if (!ep->sq_pbl) {
|
|
QEDI_WARN(&qedi->dbg_ctx,
|
|
"Could not allocate send queue PBL.\n");
|
|
rval = -ENOMEM;
|
|
goto out_free_sq;
|
|
}
|
|
memset(ep->sq_pbl, 0, ep->sq_pbl_size);
|
|
|
|
/* Create PBL */
|
|
num_pages = ep->sq_mem_size / QEDI_PAGE_SIZE;
|
|
page = ep->sq_dma;
|
|
pbl = (u32 *)ep->sq_pbl;
|
|
|
|
while (num_pages--) {
|
|
*pbl = (u32)page;
|
|
pbl++;
|
|
*pbl = (u32)((u64)page >> 32);
|
|
pbl++;
|
|
page += QEDI_PAGE_SIZE;
|
|
}
|
|
|
|
return rval;
|
|
|
|
out_free_sq:
|
|
dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq,
|
|
ep->sq_dma);
|
|
out:
|
|
return rval;
|
|
}
|
|
|
|
void qedi_free_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep)
|
|
{
|
|
if (ep->sq_pbl)
|
|
dma_free_coherent(&qedi->pdev->dev, ep->sq_pbl_size, ep->sq_pbl,
|
|
ep->sq_pbl_dma);
|
|
if (ep->sq)
|
|
dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq,
|
|
ep->sq_dma);
|
|
}
|
|
|
|
int qedi_get_task_idx(struct qedi_ctx *qedi)
|
|
{
|
|
s16 tmp_idx;
|
|
|
|
again:
|
|
tmp_idx = find_first_zero_bit(qedi->task_idx_map,
|
|
MAX_ISCSI_TASK_ENTRIES);
|
|
|
|
if (tmp_idx >= MAX_ISCSI_TASK_ENTRIES) {
|
|
QEDI_ERR(&qedi->dbg_ctx, "FW task context pool is full.\n");
|
|
tmp_idx = -1;
|
|
goto err_idx;
|
|
}
|
|
|
|
if (test_and_set_bit(tmp_idx, qedi->task_idx_map))
|
|
goto again;
|
|
|
|
err_idx:
|
|
return tmp_idx;
|
|
}
|
|
|
|
void qedi_clear_task_idx(struct qedi_ctx *qedi, int idx)
|
|
{
|
|
if (!test_and_clear_bit(idx, qedi->task_idx_map))
|
|
QEDI_ERR(&qedi->dbg_ctx,
|
|
"FW task context, already cleared, tid=0x%x\n", idx);
|
|
}
|
|
|
|
void qedi_update_itt_map(struct qedi_ctx *qedi, u32 tid, u32 proto_itt,
|
|
struct qedi_cmd *cmd)
|
|
{
|
|
qedi->itt_map[tid].itt = proto_itt;
|
|
qedi->itt_map[tid].p_cmd = cmd;
|
|
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
|
|
"update itt map tid=0x%x, with proto itt=0x%x\n", tid,
|
|
qedi->itt_map[tid].itt);
|
|
}
|
|
|
|
void qedi_get_task_tid(struct qedi_ctx *qedi, u32 itt, s16 *tid)
|
|
{
|
|
u16 i;
|
|
|
|
for (i = 0; i < MAX_ISCSI_TASK_ENTRIES; i++) {
|
|
if (qedi->itt_map[i].itt == itt) {
|
|
*tid = i;
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
|
|
"Ref itt=0x%x, found at tid=0x%x\n",
|
|
itt, *tid);
|
|
return;
|
|
}
|
|
}
|
|
|
|
WARN_ON(1);
|
|
}
|
|
|
|
void qedi_get_proto_itt(struct qedi_ctx *qedi, u32 tid, u32 *proto_itt)
|
|
{
|
|
*proto_itt = qedi->itt_map[tid].itt;
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
|
|
"Get itt map tid [0x%x with proto itt[0x%x]",
|
|
tid, *proto_itt);
|
|
}
|
|
|
|
struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid)
|
|
{
|
|
struct qedi_cmd *cmd = NULL;
|
|
|
|
if (tid > MAX_ISCSI_TASK_ENTRIES)
|
|
return NULL;
|
|
|
|
cmd = qedi->itt_map[tid].p_cmd;
|
|
if (cmd->task_id != tid)
|
|
return NULL;
|
|
|
|
qedi->itt_map[tid].p_cmd = NULL;
|
|
|
|
return cmd;
|
|
}
|
|
|
|
static int qedi_alloc_itt(struct qedi_ctx *qedi)
|
|
{
|
|
qedi->itt_map = kcalloc(MAX_ISCSI_TASK_ENTRIES,
|
|
sizeof(struct qedi_itt_map), GFP_KERNEL);
|
|
if (!qedi->itt_map) {
|
|
QEDI_ERR(&qedi->dbg_ctx,
|
|
"Unable to allocate itt map array memory\n");
|
|
return -ENOMEM;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void qedi_free_itt(struct qedi_ctx *qedi)
|
|
{
|
|
kfree(qedi->itt_map);
|
|
}
|
|
|
|
static struct qed_ll2_cb_ops qedi_ll2_cb_ops = {
|
|
.rx_cb = qedi_ll2_rx,
|
|
.tx_cb = NULL,
|
|
};
|
|
|
|
static int qedi_percpu_io_thread(void *arg)
|
|
{
|
|
struct qedi_percpu_s *p = arg;
|
|
struct qedi_work *work, *tmp;
|
|
unsigned long flags;
|
|
LIST_HEAD(work_list);
|
|
|
|
set_user_nice(current, -20);
|
|
|
|
while (!kthread_should_stop()) {
|
|
spin_lock_irqsave(&p->p_work_lock, flags);
|
|
while (!list_empty(&p->work_list)) {
|
|
list_splice_init(&p->work_list, &work_list);
|
|
spin_unlock_irqrestore(&p->p_work_lock, flags);
|
|
|
|
list_for_each_entry_safe(work, tmp, &work_list, list) {
|
|
list_del_init(&work->list);
|
|
qedi_fp_process_cqes(work);
|
|
if (!work->is_solicited)
|
|
kfree(work);
|
|
}
|
|
cond_resched();
|
|
spin_lock_irqsave(&p->p_work_lock, flags);
|
|
}
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
|
spin_unlock_irqrestore(&p->p_work_lock, flags);
|
|
schedule();
|
|
}
|
|
__set_current_state(TASK_RUNNING);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int qedi_cpu_online(unsigned int cpu)
|
|
{
|
|
struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
|
|
struct task_struct *thread;
|
|
|
|
thread = kthread_create_on_node(qedi_percpu_io_thread, (void *)p,
|
|
cpu_to_node(cpu),
|
|
"qedi_thread/%d", cpu);
|
|
if (IS_ERR(thread))
|
|
return PTR_ERR(thread);
|
|
|
|
kthread_bind(thread, cpu);
|
|
p->iothread = thread;
|
|
wake_up_process(thread);
|
|
return 0;
|
|
}
|
|
|
|
static int qedi_cpu_offline(unsigned int cpu)
|
|
{
|
|
struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
|
|
struct qedi_work *work, *tmp;
|
|
struct task_struct *thread;
|
|
|
|
spin_lock_bh(&p->p_work_lock);
|
|
thread = p->iothread;
|
|
p->iothread = NULL;
|
|
|
|
list_for_each_entry_safe(work, tmp, &p->work_list, list) {
|
|
list_del_init(&work->list);
|
|
qedi_fp_process_cqes(work);
|
|
if (!work->is_solicited)
|
|
kfree(work);
|
|
}
|
|
|
|
spin_unlock_bh(&p->p_work_lock);
|
|
if (thread)
|
|
kthread_stop(thread);
|
|
return 0;
|
|
}
|
|
|
|
void qedi_reset_host_mtu(struct qedi_ctx *qedi, u16 mtu)
|
|
{
|
|
struct qed_ll2_params params;
|
|
|
|
qedi_recover_all_conns(qedi);
|
|
|
|
qedi_ops->ll2->stop(qedi->cdev);
|
|
qedi_ll2_free_skbs(qedi);
|
|
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "old MTU %u, new MTU %u\n",
|
|
qedi->ll2_mtu, mtu);
|
|
memset(¶ms, 0, sizeof(params));
|
|
qedi->ll2_mtu = mtu;
|
|
params.mtu = qedi->ll2_mtu + IPV6_HDR_LEN + TCP_HDR_LEN;
|
|
params.drop_ttl0_packets = 0;
|
|
params.rx_vlan_stripping = 1;
|
|
ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
|
|
qedi_ops->ll2->start(qedi->cdev, ¶ms);
|
|
}
|
|
|
|
static void __qedi_remove(struct pci_dev *pdev, int mode)
|
|
{
|
|
struct qedi_ctx *qedi = pci_get_drvdata(pdev);
|
|
|
|
if (qedi->tmf_thread) {
|
|
flush_workqueue(qedi->tmf_thread);
|
|
destroy_workqueue(qedi->tmf_thread);
|
|
qedi->tmf_thread = NULL;
|
|
}
|
|
|
|
if (qedi->offload_thread) {
|
|
flush_workqueue(qedi->offload_thread);
|
|
destroy_workqueue(qedi->offload_thread);
|
|
qedi->offload_thread = NULL;
|
|
}
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
qedi_dbg_host_exit(&qedi->dbg_ctx);
|
|
#endif
|
|
if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags))
|
|
qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
|
|
|
|
qedi_sync_free_irqs(qedi);
|
|
|
|
if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
|
|
qedi_ops->stop(qedi->cdev);
|
|
qedi_ops->ll2->stop(qedi->cdev);
|
|
}
|
|
|
|
if (mode == QEDI_MODE_NORMAL)
|
|
qedi_free_iscsi_pf_param(qedi);
|
|
|
|
if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
|
|
qedi_ops->common->slowpath_stop(qedi->cdev);
|
|
qedi_ops->common->remove(qedi->cdev);
|
|
}
|
|
|
|
qedi_destroy_fp(qedi);
|
|
|
|
if (mode == QEDI_MODE_NORMAL) {
|
|
qedi_release_cid_que(qedi);
|
|
qedi_cm_free_mem(qedi);
|
|
qedi_free_uio(qedi->udev);
|
|
qedi_free_itt(qedi);
|
|
|
|
iscsi_host_remove(qedi->shost);
|
|
iscsi_host_free(qedi->shost);
|
|
|
|
if (qedi->ll2_recv_thread) {
|
|
kthread_stop(qedi->ll2_recv_thread);
|
|
qedi->ll2_recv_thread = NULL;
|
|
}
|
|
qedi_ll2_free_skbs(qedi);
|
|
}
|
|
}
|
|
|
|
static int __qedi_probe(struct pci_dev *pdev, int mode)
|
|
{
|
|
struct qedi_ctx *qedi;
|
|
struct qed_ll2_params params;
|
|
u32 dp_module = 0;
|
|
u8 dp_level = 0;
|
|
bool is_vf = false;
|
|
char host_buf[16];
|
|
struct qed_link_params link_params;
|
|
struct qed_slowpath_params sp_params;
|
|
struct qed_probe_params qed_params;
|
|
void *task_start, *task_end;
|
|
int rc;
|
|
u16 tmp;
|
|
|
|
if (mode != QEDI_MODE_RECOVERY) {
|
|
qedi = qedi_host_alloc(pdev);
|
|
if (!qedi) {
|
|
rc = -ENOMEM;
|
|
goto exit_probe;
|
|
}
|
|
} else {
|
|
qedi = pci_get_drvdata(pdev);
|
|
}
|
|
|
|
memset(&qed_params, 0, sizeof(qed_params));
|
|
qed_params.protocol = QED_PROTOCOL_ISCSI;
|
|
qed_params.dp_module = dp_module;
|
|
qed_params.dp_level = dp_level;
|
|
qed_params.is_vf = is_vf;
|
|
qedi->cdev = qedi_ops->common->probe(pdev, &qed_params);
|
|
if (!qedi->cdev) {
|
|
rc = -ENODEV;
|
|
QEDI_ERR(&qedi->dbg_ctx, "Cannot initialize hardware\n");
|
|
goto free_host;
|
|
}
|
|
|
|
qedi->msix_count = MAX_NUM_MSIX_PF;
|
|
atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
|
|
|
|
if (mode != QEDI_MODE_RECOVERY) {
|
|
rc = qedi_set_iscsi_pf_param(qedi);
|
|
if (rc) {
|
|
rc = -ENOMEM;
|
|
QEDI_ERR(&qedi->dbg_ctx,
|
|
"Set iSCSI pf param fail\n");
|
|
goto free_host;
|
|
}
|
|
}
|
|
|
|
qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
|
|
|
|
rc = qedi_prepare_fp(qedi);
|
|
if (rc) {
|
|
QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath.\n");
|
|
goto free_pf_params;
|
|
}
|
|
|
|
/* Start the Slowpath-process */
|
|
memset(&sp_params, 0, sizeof(struct qed_slowpath_params));
|
|
sp_params.int_mode = QED_INT_MODE_MSIX;
|
|
sp_params.drv_major = QEDI_DRIVER_MAJOR_VER;
|
|
sp_params.drv_minor = QEDI_DRIVER_MINOR_VER;
|
|
sp_params.drv_rev = QEDI_DRIVER_REV_VER;
|
|
sp_params.drv_eng = QEDI_DRIVER_ENG_VER;
|
|
strlcpy(sp_params.name, "qedi iSCSI", QED_DRV_VER_STR_SIZE);
|
|
rc = qedi_ops->common->slowpath_start(qedi->cdev, &sp_params);
|
|
if (rc) {
|
|
QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath\n");
|
|
goto stop_hw;
|
|
}
|
|
|
|
/* update_pf_params needs to be called before and after slowpath
|
|
* start
|
|
*/
|
|
qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
|
|
|
|
rc = qedi_setup_int(qedi);
|
|
if (rc)
|
|
goto stop_iscsi_func;
|
|
|
|
qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
|
|
|
|
/* Learn information crucial for qedi to progress */
|
|
rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info);
|
|
if (rc)
|
|
goto stop_iscsi_func;
|
|
|
|
/* Record BDQ producer doorbell addresses */
|
|
qedi->bdq_primary_prod = qedi->dev_info.primary_dbq_rq_addr;
|
|
qedi->bdq_secondary_prod = qedi->dev_info.secondary_bdq_rq_addr;
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
|
|
"BDQ primary_prod=%p secondary_prod=%p.\n",
|
|
qedi->bdq_primary_prod,
|
|
qedi->bdq_secondary_prod);
|
|
|
|
/*
|
|
* We need to write the number of BDs in the BDQ we've preallocated so
|
|
* the f/w will do a prefetch and we'll get an unsolicited CQE when a
|
|
* packet arrives.
|
|
*/
|
|
qedi->bdq_prod_idx = QEDI_BDQ_NUM;
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
|
|
"Writing %d to primary and secondary BDQ doorbell registers.\n",
|
|
qedi->bdq_prod_idx);
|
|
writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod);
|
|
tmp = readw(qedi->bdq_primary_prod);
|
|
writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod);
|
|
tmp = readw(qedi->bdq_secondary_prod);
|
|
|
|
ether_addr_copy(qedi->mac, qedi->dev_info.common.hw_mac);
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "MAC address is %pM.\n",
|
|
qedi->mac);
|
|
|
|
sprintf(host_buf, "host_%d", qedi->shost->host_no);
|
|
qedi_ops->common->set_name(qedi->cdev, host_buf);
|
|
|
|
qedi_ops->register_ops(qedi->cdev, &qedi_cb_ops, qedi);
|
|
|
|
memset(¶ms, 0, sizeof(params));
|
|
params.mtu = DEF_PATH_MTU + IPV6_HDR_LEN + TCP_HDR_LEN;
|
|
qedi->ll2_mtu = DEF_PATH_MTU;
|
|
params.drop_ttl0_packets = 0;
|
|
params.rx_vlan_stripping = 1;
|
|
ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
|
|
|
|
if (mode != QEDI_MODE_RECOVERY) {
|
|
/* set up rx path */
|
|
INIT_LIST_HEAD(&qedi->ll2_skb_list);
|
|
spin_lock_init(&qedi->ll2_lock);
|
|
/* start qedi context */
|
|
spin_lock_init(&qedi->hba_lock);
|
|
spin_lock_init(&qedi->task_idx_lock);
|
|
}
|
|
qedi_ops->ll2->register_cb_ops(qedi->cdev, &qedi_ll2_cb_ops, qedi);
|
|
qedi_ops->ll2->start(qedi->cdev, ¶ms);
|
|
|
|
if (mode != QEDI_MODE_RECOVERY) {
|
|
qedi->ll2_recv_thread = kthread_run(qedi_ll2_recv_thread,
|
|
(void *)qedi,
|
|
"qedi_ll2_thread");
|
|
}
|
|
|
|
rc = qedi_ops->start(qedi->cdev, &qedi->tasks,
|
|
qedi, qedi_iscsi_event_cb);
|
|
if (rc) {
|
|
rc = -ENODEV;
|
|
QEDI_ERR(&qedi->dbg_ctx, "Cannot start iSCSI function\n");
|
|
goto stop_slowpath;
|
|
}
|
|
|
|
task_start = qedi_get_task_mem(&qedi->tasks, 0);
|
|
task_end = qedi_get_task_mem(&qedi->tasks, MAX_TID_BLOCKS_ISCSI - 1);
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
|
|
"Task context start=%p, end=%p block_size=%u.\n",
|
|
task_start, task_end, qedi->tasks.size);
|
|
|
|
memset(&link_params, 0, sizeof(link_params));
|
|
link_params.link_up = true;
|
|
rc = qedi_ops->common->set_link(qedi->cdev, &link_params);
|
|
if (rc) {
|
|
QEDI_WARN(&qedi->dbg_ctx, "Link set up failed.\n");
|
|
atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
|
|
}
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
qedi_dbg_host_init(&qedi->dbg_ctx, &qedi_debugfs_ops,
|
|
&qedi_dbg_fops);
|
|
#endif
|
|
QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
|
|
"QLogic FastLinQ iSCSI Module qedi %s, FW %d.%d.%d.%d\n",
|
|
QEDI_MODULE_VERSION, FW_MAJOR_VERSION, FW_MINOR_VERSION,
|
|
FW_REVISION_VERSION, FW_ENGINEERING_VERSION);
|
|
|
|
if (mode == QEDI_MODE_NORMAL) {
|
|
if (iscsi_host_add(qedi->shost, &pdev->dev)) {
|
|
QEDI_ERR(&qedi->dbg_ctx,
|
|
"Could not add iscsi host\n");
|
|
rc = -ENOMEM;
|
|
goto remove_host;
|
|
}
|
|
|
|
/* Allocate uio buffers */
|
|
rc = qedi_alloc_uio_rings(qedi);
|
|
if (rc) {
|
|
QEDI_ERR(&qedi->dbg_ctx,
|
|
"UIO alloc ring failed err=%d\n", rc);
|
|
goto remove_host;
|
|
}
|
|
|
|
rc = qedi_init_uio(qedi);
|
|
if (rc) {
|
|
QEDI_ERR(&qedi->dbg_ctx,
|
|
"UIO init failed, err=%d\n", rc);
|
|
goto free_uio;
|
|
}
|
|
|
|
/* host the array on iscsi_conn */
|
|
rc = qedi_setup_cid_que(qedi);
|
|
if (rc) {
|
|
QEDI_ERR(&qedi->dbg_ctx,
|
|
"Could not setup cid que\n");
|
|
goto free_uio;
|
|
}
|
|
|
|
rc = qedi_cm_alloc_mem(qedi);
|
|
if (rc) {
|
|
QEDI_ERR(&qedi->dbg_ctx,
|
|
"Could not alloc cm memory\n");
|
|
goto free_cid_que;
|
|
}
|
|
|
|
rc = qedi_alloc_itt(qedi);
|
|
if (rc) {
|
|
QEDI_ERR(&qedi->dbg_ctx,
|
|
"Could not alloc itt memory\n");
|
|
goto free_cid_que;
|
|
}
|
|
|
|
sprintf(host_buf, "host_%d", qedi->shost->host_no);
|
|
qedi->tmf_thread = create_singlethread_workqueue(host_buf);
|
|
if (!qedi->tmf_thread) {
|
|
QEDI_ERR(&qedi->dbg_ctx,
|
|
"Unable to start tmf thread!\n");
|
|
rc = -ENODEV;
|
|
goto free_cid_que;
|
|
}
|
|
|
|
sprintf(host_buf, "qedi_ofld%d", qedi->shost->host_no);
|
|
qedi->offload_thread = create_workqueue(host_buf);
|
|
if (!qedi->offload_thread) {
|
|
QEDI_ERR(&qedi->dbg_ctx,
|
|
"Unable to start offload thread!\n");
|
|
rc = -ENODEV;
|
|
goto free_cid_que;
|
|
}
|
|
|
|
/* F/w needs 1st task context memory entry for performance */
|
|
set_bit(QEDI_RESERVE_TASK_ID, qedi->task_idx_map);
|
|
atomic_set(&qedi->num_offloads, 0);
|
|
}
|
|
|
|
return 0;
|
|
|
|
free_cid_que:
|
|
qedi_release_cid_que(qedi);
|
|
free_uio:
|
|
qedi_free_uio(qedi->udev);
|
|
remove_host:
|
|
#ifdef CONFIG_DEBUG_FS
|
|
qedi_dbg_host_exit(&qedi->dbg_ctx);
|
|
#endif
|
|
iscsi_host_remove(qedi->shost);
|
|
stop_iscsi_func:
|
|
qedi_ops->stop(qedi->cdev);
|
|
stop_slowpath:
|
|
qedi_ops->common->slowpath_stop(qedi->cdev);
|
|
stop_hw:
|
|
qedi_ops->common->remove(qedi->cdev);
|
|
free_pf_params:
|
|
qedi_free_iscsi_pf_param(qedi);
|
|
free_host:
|
|
iscsi_host_free(qedi->shost);
|
|
exit_probe:
|
|
return rc;
|
|
}
|
|
|
|
static int qedi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
|
|
{
|
|
return __qedi_probe(pdev, QEDI_MODE_NORMAL);
|
|
}
|
|
|
|
static void qedi_remove(struct pci_dev *pdev)
|
|
{
|
|
__qedi_remove(pdev, QEDI_MODE_NORMAL);
|
|
}
|
|
|
|
static struct pci_device_id qedi_pci_tbl[] = {
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165E) },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8084) },
|
|
{ 0 },
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, qedi_pci_tbl);
|
|
|
|
static enum cpuhp_state qedi_cpuhp_state;
|
|
|
|
static struct pci_driver qedi_pci_driver = {
|
|
.name = QEDI_MODULE_NAME,
|
|
.id_table = qedi_pci_tbl,
|
|
.probe = qedi_probe,
|
|
.remove = qedi_remove,
|
|
};
|
|
|
|
static int __init qedi_init(void)
|
|
{
|
|
struct qedi_percpu_s *p;
|
|
int cpu, rc = 0;
|
|
|
|
qedi_ops = qed_get_iscsi_ops();
|
|
if (!qedi_ops) {
|
|
QEDI_ERR(NULL, "Failed to get qed iSCSI operations\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
qedi_dbg_init("qedi");
|
|
#endif
|
|
|
|
qedi_scsi_transport = iscsi_register_transport(&qedi_iscsi_transport);
|
|
if (!qedi_scsi_transport) {
|
|
QEDI_ERR(NULL, "Could not register qedi transport");
|
|
rc = -ENOMEM;
|
|
goto exit_qedi_init_1;
|
|
}
|
|
|
|
for_each_possible_cpu(cpu) {
|
|
p = &per_cpu(qedi_percpu, cpu);
|
|
INIT_LIST_HEAD(&p->work_list);
|
|
spin_lock_init(&p->p_work_lock);
|
|
p->iothread = NULL;
|
|
}
|
|
|
|
rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/qedi:online",
|
|
qedi_cpu_online, qedi_cpu_offline);
|
|
if (rc < 0)
|
|
goto exit_qedi_init_2;
|
|
qedi_cpuhp_state = rc;
|
|
|
|
rc = pci_register_driver(&qedi_pci_driver);
|
|
if (rc) {
|
|
QEDI_ERR(NULL, "Failed to register driver\n");
|
|
goto exit_qedi_hp;
|
|
}
|
|
|
|
return 0;
|
|
|
|
exit_qedi_hp:
|
|
cpuhp_remove_state(qedi_cpuhp_state);
|
|
exit_qedi_init_2:
|
|
iscsi_unregister_transport(&qedi_iscsi_transport);
|
|
exit_qedi_init_1:
|
|
#ifdef CONFIG_DEBUG_FS
|
|
qedi_dbg_exit();
|
|
#endif
|
|
qed_put_iscsi_ops();
|
|
return rc;
|
|
}
|
|
|
|
static void __exit qedi_cleanup(void)
|
|
{
|
|
pci_unregister_driver(&qedi_pci_driver);
|
|
cpuhp_remove_state(qedi_cpuhp_state);
|
|
iscsi_unregister_transport(&qedi_iscsi_transport);
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
qedi_dbg_exit();
|
|
#endif
|
|
qed_put_iscsi_ops();
|
|
}
|
|
|
|
MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx iSCSI Module");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("QLogic Corporation");
|
|
MODULE_VERSION(QEDI_MODULE_VERSION);
|
|
module_init(qedi_init);
|
|
module_exit(qedi_cleanup);
|