3900 lines
112 KiB
C
3900 lines
112 KiB
C
/**************************************************************************/
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/* */
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/* IBM System i and System p Virtual NIC Device Driver */
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/* Copyright (C) 2014 IBM Corp. */
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/* Santiago Leon (santi_leon@yahoo.com) */
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/* Thomas Falcon (tlfalcon@linux.vnet.ibm.com) */
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/* John Allen (jallen@linux.vnet.ibm.com) */
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/* */
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/* This program is free software; you can redistribute it and/or modify */
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/* it under the terms of the GNU General Public License as published by */
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/* the Free Software Foundation; either version 2 of the License, or */
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/* (at your option) any later version. */
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/* */
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/* This program is distributed in the hope that it will be useful, */
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/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
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/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
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/* GNU General Public License for more details. */
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/* */
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/* You should have received a copy of the GNU General Public License */
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/* along with this program. */
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/* */
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/* This module contains the implementation of a virtual ethernet device */
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/* for use with IBM i/p Series LPAR Linux. It utilizes the logical LAN */
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/* option of the RS/6000 Platform Architecture to interface with virtual */
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/* ethernet NICs that are presented to the partition by the hypervisor. */
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/* */
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/* Messages are passed between the VNIC driver and the VNIC server using */
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/* Command/Response Queues (CRQs) and sub CRQs (sCRQs). CRQs are used to */
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/* issue and receive commands that initiate communication with the server */
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/* on driver initialization. Sub CRQs (sCRQs) are similar to CRQs, but */
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/* are used by the driver to notify the server that a packet is */
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/* ready for transmission or that a buffer has been added to receive a */
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/* packet. Subsequently, sCRQs are used by the server to notify the */
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/* driver that a packet transmission has been completed or that a packet */
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/* has been received and placed in a waiting buffer. */
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/* */
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/* In lieu of a more conventional "on-the-fly" DMA mapping strategy in */
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/* which skbs are DMA mapped and immediately unmapped when the transmit */
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/* or receive has been completed, the VNIC driver is required to use */
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/* "long term mapping". This entails that large, continuous DMA mapped */
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/* buffers are allocated on driver initialization and these buffers are */
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/* then continuously reused to pass skbs to and from the VNIC server. */
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/* */
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/**************************************************************************/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/types.h>
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#include <linux/errno.h>
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#include <linux/completion.h>
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#include <linux/ioport.h>
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#include <linux/dma-mapping.h>
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#include <linux/kernel.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/skbuff.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/mm.h>
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#include <linux/ethtool.h>
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#include <linux/proc_fs.h>
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#include <linux/in.h>
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#include <linux/ip.h>
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#include <linux/ipv6.h>
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#include <linux/irq.h>
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#include <linux/kthread.h>
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#include <linux/seq_file.h>
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#include <linux/debugfs.h>
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#include <linux/interrupt.h>
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#include <net/net_namespace.h>
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#include <asm/hvcall.h>
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#include <linux/atomic.h>
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#include <asm/vio.h>
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#include <asm/iommu.h>
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#include <linux/uaccess.h>
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#include <asm/firmware.h>
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#include <linux/seq_file.h>
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#include <linux/workqueue.h>
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#include "ibmvnic.h"
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static const char ibmvnic_driver_name[] = "ibmvnic";
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static const char ibmvnic_driver_string[] = "IBM System i/p Virtual NIC Driver";
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MODULE_AUTHOR("Santiago Leon <santi_leon@yahoo.com>");
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MODULE_DESCRIPTION("IBM System i/p Virtual NIC Driver");
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MODULE_LICENSE("GPL");
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MODULE_VERSION(IBMVNIC_DRIVER_VERSION);
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static int ibmvnic_version = IBMVNIC_INITIAL_VERSION;
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static int ibmvnic_remove(struct vio_dev *);
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static void release_sub_crqs(struct ibmvnic_adapter *);
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static void release_sub_crqs_no_irqs(struct ibmvnic_adapter *);
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static int ibmvnic_reset_crq(struct ibmvnic_adapter *);
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static int ibmvnic_send_crq_init(struct ibmvnic_adapter *);
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static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter *);
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static int ibmvnic_send_crq(struct ibmvnic_adapter *, union ibmvnic_crq *);
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static int send_subcrq(struct ibmvnic_adapter *adapter, u64 remote_handle,
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union sub_crq *sub_crq);
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static int send_subcrq_indirect(struct ibmvnic_adapter *, u64, u64, u64);
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static irqreturn_t ibmvnic_interrupt_rx(int irq, void *instance);
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static int enable_scrq_irq(struct ibmvnic_adapter *,
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struct ibmvnic_sub_crq_queue *);
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static int disable_scrq_irq(struct ibmvnic_adapter *,
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struct ibmvnic_sub_crq_queue *);
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static int pending_scrq(struct ibmvnic_adapter *,
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struct ibmvnic_sub_crq_queue *);
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static union sub_crq *ibmvnic_next_scrq(struct ibmvnic_adapter *,
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struct ibmvnic_sub_crq_queue *);
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static int ibmvnic_poll(struct napi_struct *napi, int data);
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static void send_map_query(struct ibmvnic_adapter *adapter);
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static void send_request_map(struct ibmvnic_adapter *, dma_addr_t, __be32, u8);
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static void send_request_unmap(struct ibmvnic_adapter *, u8);
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struct ibmvnic_stat {
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char name[ETH_GSTRING_LEN];
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int offset;
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};
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#define IBMVNIC_STAT_OFF(stat) (offsetof(struct ibmvnic_adapter, stats) + \
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offsetof(struct ibmvnic_statistics, stat))
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#define IBMVNIC_GET_STAT(a, off) (*((u64 *)(((unsigned long)(a)) + off)))
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static const struct ibmvnic_stat ibmvnic_stats[] = {
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{"rx_packets", IBMVNIC_STAT_OFF(rx_packets)},
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{"rx_bytes", IBMVNIC_STAT_OFF(rx_bytes)},
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{"tx_packets", IBMVNIC_STAT_OFF(tx_packets)},
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{"tx_bytes", IBMVNIC_STAT_OFF(tx_bytes)},
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{"ucast_tx_packets", IBMVNIC_STAT_OFF(ucast_tx_packets)},
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{"ucast_rx_packets", IBMVNIC_STAT_OFF(ucast_rx_packets)},
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{"mcast_tx_packets", IBMVNIC_STAT_OFF(mcast_tx_packets)},
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{"mcast_rx_packets", IBMVNIC_STAT_OFF(mcast_rx_packets)},
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{"bcast_tx_packets", IBMVNIC_STAT_OFF(bcast_tx_packets)},
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{"bcast_rx_packets", IBMVNIC_STAT_OFF(bcast_rx_packets)},
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{"align_errors", IBMVNIC_STAT_OFF(align_errors)},
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{"fcs_errors", IBMVNIC_STAT_OFF(fcs_errors)},
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{"single_collision_frames", IBMVNIC_STAT_OFF(single_collision_frames)},
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{"multi_collision_frames", IBMVNIC_STAT_OFF(multi_collision_frames)},
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{"sqe_test_errors", IBMVNIC_STAT_OFF(sqe_test_errors)},
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{"deferred_tx", IBMVNIC_STAT_OFF(deferred_tx)},
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{"late_collisions", IBMVNIC_STAT_OFF(late_collisions)},
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{"excess_collisions", IBMVNIC_STAT_OFF(excess_collisions)},
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{"internal_mac_tx_errors", IBMVNIC_STAT_OFF(internal_mac_tx_errors)},
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{"carrier_sense", IBMVNIC_STAT_OFF(carrier_sense)},
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{"too_long_frames", IBMVNIC_STAT_OFF(too_long_frames)},
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{"internal_mac_rx_errors", IBMVNIC_STAT_OFF(internal_mac_rx_errors)},
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};
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static long h_reg_sub_crq(unsigned long unit_address, unsigned long token,
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unsigned long length, unsigned long *number,
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unsigned long *irq)
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{
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unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
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long rc;
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rc = plpar_hcall(H_REG_SUB_CRQ, retbuf, unit_address, token, length);
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*number = retbuf[0];
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*irq = retbuf[1];
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return rc;
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}
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/* net_device_ops functions */
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static void init_rx_pool(struct ibmvnic_adapter *adapter,
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struct ibmvnic_rx_pool *rx_pool, int num, int index,
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int buff_size, int active)
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{
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netdev_dbg(adapter->netdev,
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"Initializing rx_pool %d, %d buffs, %d bytes each\n",
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index, num, buff_size);
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rx_pool->size = num;
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rx_pool->index = index;
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rx_pool->buff_size = buff_size;
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rx_pool->active = active;
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}
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static int alloc_long_term_buff(struct ibmvnic_adapter *adapter,
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struct ibmvnic_long_term_buff *ltb, int size)
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{
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struct device *dev = &adapter->vdev->dev;
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ltb->size = size;
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ltb->buff = dma_alloc_coherent(dev, ltb->size, <b->addr,
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GFP_KERNEL);
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if (!ltb->buff) {
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dev_err(dev, "Couldn't alloc long term buffer\n");
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return -ENOMEM;
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}
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ltb->map_id = adapter->map_id;
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adapter->map_id++;
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send_request_map(adapter, ltb->addr,
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ltb->size, ltb->map_id);
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init_completion(&adapter->fw_done);
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wait_for_completion(&adapter->fw_done);
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return 0;
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}
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static void free_long_term_buff(struct ibmvnic_adapter *adapter,
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struct ibmvnic_long_term_buff *ltb)
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{
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struct device *dev = &adapter->vdev->dev;
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dma_free_coherent(dev, ltb->size, ltb->buff, ltb->addr);
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send_request_unmap(adapter, ltb->map_id);
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}
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static int alloc_rx_pool(struct ibmvnic_adapter *adapter,
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struct ibmvnic_rx_pool *pool)
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{
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struct device *dev = &adapter->vdev->dev;
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int i;
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pool->free_map = kcalloc(pool->size, sizeof(int), GFP_KERNEL);
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if (!pool->free_map)
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return -ENOMEM;
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pool->rx_buff = kcalloc(pool->size, sizeof(struct ibmvnic_rx_buff),
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GFP_KERNEL);
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if (!pool->rx_buff) {
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dev_err(dev, "Couldn't alloc rx buffers\n");
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kfree(pool->free_map);
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return -ENOMEM;
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}
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if (alloc_long_term_buff(adapter, &pool->long_term_buff,
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pool->size * pool->buff_size)) {
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kfree(pool->free_map);
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kfree(pool->rx_buff);
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return -ENOMEM;
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}
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for (i = 0; i < pool->size; ++i)
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pool->free_map[i] = i;
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atomic_set(&pool->available, 0);
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pool->next_alloc = 0;
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pool->next_free = 0;
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return 0;
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}
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static void replenish_rx_pool(struct ibmvnic_adapter *adapter,
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struct ibmvnic_rx_pool *pool)
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{
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int count = pool->size - atomic_read(&pool->available);
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struct device *dev = &adapter->vdev->dev;
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int buffers_added = 0;
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unsigned long lpar_rc;
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union sub_crq sub_crq;
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struct sk_buff *skb;
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unsigned int offset;
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dma_addr_t dma_addr;
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unsigned char *dst;
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u64 *handle_array;
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int shift = 0;
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int index;
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int i;
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handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) +
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be32_to_cpu(adapter->login_rsp_buf->
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off_rxadd_subcrqs));
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for (i = 0; i < count; ++i) {
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skb = alloc_skb(pool->buff_size, GFP_ATOMIC);
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if (!skb) {
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dev_err(dev, "Couldn't replenish rx buff\n");
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adapter->replenish_no_mem++;
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break;
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}
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index = pool->free_map[pool->next_free];
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if (pool->rx_buff[index].skb)
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dev_err(dev, "Inconsistent free_map!\n");
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/* Copy the skb to the long term mapped DMA buffer */
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offset = index * pool->buff_size;
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dst = pool->long_term_buff.buff + offset;
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memset(dst, 0, pool->buff_size);
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dma_addr = pool->long_term_buff.addr + offset;
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pool->rx_buff[index].data = dst;
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pool->free_map[pool->next_free] = IBMVNIC_INVALID_MAP;
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pool->rx_buff[index].dma = dma_addr;
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pool->rx_buff[index].skb = skb;
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pool->rx_buff[index].pool_index = pool->index;
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pool->rx_buff[index].size = pool->buff_size;
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memset(&sub_crq, 0, sizeof(sub_crq));
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sub_crq.rx_add.first = IBMVNIC_CRQ_CMD;
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sub_crq.rx_add.correlator =
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cpu_to_be64((u64)&pool->rx_buff[index]);
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sub_crq.rx_add.ioba = cpu_to_be32(dma_addr);
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sub_crq.rx_add.map_id = pool->long_term_buff.map_id;
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/* The length field of the sCRQ is defined to be 24 bits so the
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* buffer size needs to be left shifted by a byte before it is
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* converted to big endian to prevent the last byte from being
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* truncated.
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*/
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#ifdef __LITTLE_ENDIAN__
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shift = 8;
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#endif
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sub_crq.rx_add.len = cpu_to_be32(pool->buff_size << shift);
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lpar_rc = send_subcrq(adapter, handle_array[pool->index],
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&sub_crq);
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if (lpar_rc != H_SUCCESS)
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goto failure;
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buffers_added++;
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adapter->replenish_add_buff_success++;
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pool->next_free = (pool->next_free + 1) % pool->size;
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}
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atomic_add(buffers_added, &pool->available);
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return;
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failure:
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dev_info(dev, "replenish pools failure\n");
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pool->free_map[pool->next_free] = index;
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pool->rx_buff[index].skb = NULL;
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if (!dma_mapping_error(dev, dma_addr))
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dma_unmap_single(dev, dma_addr, pool->buff_size,
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DMA_FROM_DEVICE);
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dev_kfree_skb_any(skb);
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adapter->replenish_add_buff_failure++;
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atomic_add(buffers_added, &pool->available);
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}
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static void replenish_pools(struct ibmvnic_adapter *adapter)
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{
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int i;
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if (adapter->migrated)
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return;
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adapter->replenish_task_cycles++;
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for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
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i++) {
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if (adapter->rx_pool[i].active)
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replenish_rx_pool(adapter, &adapter->rx_pool[i]);
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}
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}
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static void free_rx_pool(struct ibmvnic_adapter *adapter,
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struct ibmvnic_rx_pool *pool)
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{
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int i;
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kfree(pool->free_map);
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pool->free_map = NULL;
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if (!pool->rx_buff)
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return;
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for (i = 0; i < pool->size; i++) {
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if (pool->rx_buff[i].skb) {
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dev_kfree_skb_any(pool->rx_buff[i].skb);
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pool->rx_buff[i].skb = NULL;
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}
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}
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kfree(pool->rx_buff);
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pool->rx_buff = NULL;
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}
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|
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static int ibmvnic_open(struct net_device *netdev)
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{
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struct ibmvnic_adapter *adapter = netdev_priv(netdev);
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struct device *dev = &adapter->vdev->dev;
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struct ibmvnic_tx_pool *tx_pool;
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union ibmvnic_crq crq;
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int rxadd_subcrqs;
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u64 *size_array;
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int tx_subcrqs;
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int i, j;
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rxadd_subcrqs =
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be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
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tx_subcrqs =
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be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs);
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size_array = (u64 *)((u8 *)(adapter->login_rsp_buf) +
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be32_to_cpu(adapter->login_rsp_buf->
|
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off_rxadd_buff_size));
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adapter->map_id = 1;
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adapter->napi = kcalloc(adapter->req_rx_queues,
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sizeof(struct napi_struct), GFP_KERNEL);
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if (!adapter->napi)
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goto alloc_napi_failed;
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for (i = 0; i < adapter->req_rx_queues; i++) {
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netif_napi_add(netdev, &adapter->napi[i], ibmvnic_poll,
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NAPI_POLL_WEIGHT);
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napi_enable(&adapter->napi[i]);
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}
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adapter->rx_pool =
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kcalloc(rxadd_subcrqs, sizeof(struct ibmvnic_rx_pool), GFP_KERNEL);
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|
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if (!adapter->rx_pool)
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goto rx_pool_arr_alloc_failed;
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send_map_query(adapter);
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for (i = 0; i < rxadd_subcrqs; i++) {
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init_rx_pool(adapter, &adapter->rx_pool[i],
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IBMVNIC_BUFFS_PER_POOL, i,
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be64_to_cpu(size_array[i]), 1);
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if (alloc_rx_pool(adapter, &adapter->rx_pool[i])) {
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dev_err(dev, "Couldn't alloc rx pool\n");
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goto rx_pool_alloc_failed;
|
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}
|
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}
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adapter->tx_pool =
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kcalloc(tx_subcrqs, sizeof(struct ibmvnic_tx_pool), GFP_KERNEL);
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|
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if (!adapter->tx_pool)
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goto tx_pool_arr_alloc_failed;
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for (i = 0; i < tx_subcrqs; i++) {
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tx_pool = &adapter->tx_pool[i];
|
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tx_pool->tx_buff =
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kcalloc(adapter->max_tx_entries_per_subcrq,
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sizeof(struct ibmvnic_tx_buff), GFP_KERNEL);
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if (!tx_pool->tx_buff)
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goto tx_pool_alloc_failed;
|
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|
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if (alloc_long_term_buff(adapter, &tx_pool->long_term_buff,
|
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adapter->max_tx_entries_per_subcrq *
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adapter->req_mtu))
|
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goto tx_ltb_alloc_failed;
|
|
|
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tx_pool->free_map =
|
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kcalloc(adapter->max_tx_entries_per_subcrq,
|
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sizeof(int), GFP_KERNEL);
|
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if (!tx_pool->free_map)
|
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goto tx_fm_alloc_failed;
|
|
|
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for (j = 0; j < adapter->max_tx_entries_per_subcrq; j++)
|
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tx_pool->free_map[j] = j;
|
|
|
|
tx_pool->consumer_index = 0;
|
|
tx_pool->producer_index = 0;
|
|
}
|
|
adapter->bounce_buffer_size =
|
|
(netdev->mtu + ETH_HLEN - 1) / PAGE_SIZE + 1;
|
|
adapter->bounce_buffer = kmalloc(adapter->bounce_buffer_size,
|
|
GFP_KERNEL);
|
|
if (!adapter->bounce_buffer)
|
|
goto bounce_alloc_failed;
|
|
|
|
adapter->bounce_buffer_dma = dma_map_single(dev, adapter->bounce_buffer,
|
|
adapter->bounce_buffer_size,
|
|
DMA_TO_DEVICE);
|
|
if (dma_mapping_error(dev, adapter->bounce_buffer_dma)) {
|
|
dev_err(dev, "Couldn't map tx bounce buffer\n");
|
|
goto bounce_map_failed;
|
|
}
|
|
replenish_pools(adapter);
|
|
|
|
/* We're ready to receive frames, enable the sub-crq interrupts and
|
|
* set the logical link state to up
|
|
*/
|
|
for (i = 0; i < adapter->req_rx_queues; i++)
|
|
enable_scrq_irq(adapter, adapter->rx_scrq[i]);
|
|
|
|
for (i = 0; i < adapter->req_tx_queues; i++)
|
|
enable_scrq_irq(adapter, adapter->tx_scrq[i]);
|
|
|
|
memset(&crq, 0, sizeof(crq));
|
|
crq.logical_link_state.first = IBMVNIC_CRQ_CMD;
|
|
crq.logical_link_state.cmd = LOGICAL_LINK_STATE;
|
|
crq.logical_link_state.link_state = IBMVNIC_LOGICAL_LNK_UP;
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
netif_tx_start_all_queues(netdev);
|
|
|
|
return 0;
|
|
|
|
bounce_map_failed:
|
|
kfree(adapter->bounce_buffer);
|
|
bounce_alloc_failed:
|
|
i = tx_subcrqs - 1;
|
|
kfree(adapter->tx_pool[i].free_map);
|
|
tx_fm_alloc_failed:
|
|
free_long_term_buff(adapter, &adapter->tx_pool[i].long_term_buff);
|
|
tx_ltb_alloc_failed:
|
|
kfree(adapter->tx_pool[i].tx_buff);
|
|
tx_pool_alloc_failed:
|
|
for (j = 0; j < i; j++) {
|
|
kfree(adapter->tx_pool[j].tx_buff);
|
|
free_long_term_buff(adapter,
|
|
&adapter->tx_pool[j].long_term_buff);
|
|
kfree(adapter->tx_pool[j].free_map);
|
|
}
|
|
kfree(adapter->tx_pool);
|
|
adapter->tx_pool = NULL;
|
|
tx_pool_arr_alloc_failed:
|
|
i = rxadd_subcrqs;
|
|
rx_pool_alloc_failed:
|
|
for (j = 0; j < i; j++) {
|
|
free_rx_pool(adapter, &adapter->rx_pool[j]);
|
|
free_long_term_buff(adapter,
|
|
&adapter->rx_pool[j].long_term_buff);
|
|
}
|
|
kfree(adapter->rx_pool);
|
|
adapter->rx_pool = NULL;
|
|
rx_pool_arr_alloc_failed:
|
|
for (i = 0; i < adapter->req_rx_queues; i++)
|
|
napi_enable(&adapter->napi[i]);
|
|
alloc_napi_failed:
|
|
return -ENOMEM;
|
|
}
|
|
|
|
static int ibmvnic_close(struct net_device *netdev)
|
|
{
|
|
struct ibmvnic_adapter *adapter = netdev_priv(netdev);
|
|
struct device *dev = &adapter->vdev->dev;
|
|
union ibmvnic_crq crq;
|
|
int i;
|
|
|
|
adapter->closing = true;
|
|
|
|
for (i = 0; i < adapter->req_rx_queues; i++)
|
|
napi_disable(&adapter->napi[i]);
|
|
|
|
netif_tx_stop_all_queues(netdev);
|
|
|
|
if (adapter->bounce_buffer) {
|
|
if (!dma_mapping_error(dev, adapter->bounce_buffer_dma)) {
|
|
dma_unmap_single(&adapter->vdev->dev,
|
|
adapter->bounce_buffer_dma,
|
|
adapter->bounce_buffer_size,
|
|
DMA_BIDIRECTIONAL);
|
|
adapter->bounce_buffer_dma = DMA_ERROR_CODE;
|
|
}
|
|
kfree(adapter->bounce_buffer);
|
|
adapter->bounce_buffer = NULL;
|
|
}
|
|
|
|
memset(&crq, 0, sizeof(crq));
|
|
crq.logical_link_state.first = IBMVNIC_CRQ_CMD;
|
|
crq.logical_link_state.cmd = LOGICAL_LINK_STATE;
|
|
crq.logical_link_state.link_state = IBMVNIC_LOGICAL_LNK_DN;
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs);
|
|
i++) {
|
|
kfree(adapter->tx_pool[i].tx_buff);
|
|
free_long_term_buff(adapter,
|
|
&adapter->tx_pool[i].long_term_buff);
|
|
kfree(adapter->tx_pool[i].free_map);
|
|
}
|
|
kfree(adapter->tx_pool);
|
|
adapter->tx_pool = NULL;
|
|
|
|
for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
|
|
i++) {
|
|
free_rx_pool(adapter, &adapter->rx_pool[i]);
|
|
free_long_term_buff(adapter,
|
|
&adapter->rx_pool[i].long_term_buff);
|
|
}
|
|
kfree(adapter->rx_pool);
|
|
adapter->rx_pool = NULL;
|
|
|
|
adapter->closing = false;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* build_hdr_data - creates L2/L3/L4 header data buffer
|
|
* @hdr_field - bitfield determining needed headers
|
|
* @skb - socket buffer
|
|
* @hdr_len - array of header lengths
|
|
* @tot_len - total length of data
|
|
*
|
|
* Reads hdr_field to determine which headers are needed by firmware.
|
|
* Builds a buffer containing these headers. Saves individual header
|
|
* lengths and total buffer length to be used to build descriptors.
|
|
*/
|
|
static int build_hdr_data(u8 hdr_field, struct sk_buff *skb,
|
|
int *hdr_len, u8 *hdr_data)
|
|
{
|
|
int len = 0;
|
|
u8 *hdr;
|
|
|
|
hdr_len[0] = sizeof(struct ethhdr);
|
|
|
|
if (skb->protocol == htons(ETH_P_IP)) {
|
|
hdr_len[1] = ip_hdr(skb)->ihl * 4;
|
|
if (ip_hdr(skb)->protocol == IPPROTO_TCP)
|
|
hdr_len[2] = tcp_hdrlen(skb);
|
|
else if (ip_hdr(skb)->protocol == IPPROTO_UDP)
|
|
hdr_len[2] = sizeof(struct udphdr);
|
|
} else if (skb->protocol == htons(ETH_P_IPV6)) {
|
|
hdr_len[1] = sizeof(struct ipv6hdr);
|
|
if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
|
|
hdr_len[2] = tcp_hdrlen(skb);
|
|
else if (ipv6_hdr(skb)->nexthdr == IPPROTO_UDP)
|
|
hdr_len[2] = sizeof(struct udphdr);
|
|
}
|
|
|
|
memset(hdr_data, 0, 120);
|
|
if ((hdr_field >> 6) & 1) {
|
|
hdr = skb_mac_header(skb);
|
|
memcpy(hdr_data, hdr, hdr_len[0]);
|
|
len += hdr_len[0];
|
|
}
|
|
|
|
if ((hdr_field >> 5) & 1) {
|
|
hdr = skb_network_header(skb);
|
|
memcpy(hdr_data + len, hdr, hdr_len[1]);
|
|
len += hdr_len[1];
|
|
}
|
|
|
|
if ((hdr_field >> 4) & 1) {
|
|
hdr = skb_transport_header(skb);
|
|
memcpy(hdr_data + len, hdr, hdr_len[2]);
|
|
len += hdr_len[2];
|
|
}
|
|
return len;
|
|
}
|
|
|
|
/**
|
|
* create_hdr_descs - create header and header extension descriptors
|
|
* @hdr_field - bitfield determining needed headers
|
|
* @data - buffer containing header data
|
|
* @len - length of data buffer
|
|
* @hdr_len - array of individual header lengths
|
|
* @scrq_arr - descriptor array
|
|
*
|
|
* Creates header and, if needed, header extension descriptors and
|
|
* places them in a descriptor array, scrq_arr
|
|
*/
|
|
|
|
static void create_hdr_descs(u8 hdr_field, u8 *hdr_data, int len, int *hdr_len,
|
|
union sub_crq *scrq_arr)
|
|
{
|
|
union sub_crq hdr_desc;
|
|
int tmp_len = len;
|
|
u8 *data, *cur;
|
|
int tmp;
|
|
|
|
while (tmp_len > 0) {
|
|
cur = hdr_data + len - tmp_len;
|
|
|
|
memset(&hdr_desc, 0, sizeof(hdr_desc));
|
|
if (cur != hdr_data) {
|
|
data = hdr_desc.hdr_ext.data;
|
|
tmp = tmp_len > 29 ? 29 : tmp_len;
|
|
hdr_desc.hdr_ext.first = IBMVNIC_CRQ_CMD;
|
|
hdr_desc.hdr_ext.type = IBMVNIC_HDR_EXT_DESC;
|
|
hdr_desc.hdr_ext.len = tmp;
|
|
} else {
|
|
data = hdr_desc.hdr.data;
|
|
tmp = tmp_len > 24 ? 24 : tmp_len;
|
|
hdr_desc.hdr.first = IBMVNIC_CRQ_CMD;
|
|
hdr_desc.hdr.type = IBMVNIC_HDR_DESC;
|
|
hdr_desc.hdr.len = tmp;
|
|
hdr_desc.hdr.l2_len = (u8)hdr_len[0];
|
|
hdr_desc.hdr.l3_len = cpu_to_be16((u16)hdr_len[1]);
|
|
hdr_desc.hdr.l4_len = (u8)hdr_len[2];
|
|
hdr_desc.hdr.flag = hdr_field << 1;
|
|
}
|
|
memcpy(data, cur, tmp);
|
|
tmp_len -= tmp;
|
|
*scrq_arr = hdr_desc;
|
|
scrq_arr++;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* build_hdr_descs_arr - build a header descriptor array
|
|
* @skb - socket buffer
|
|
* @num_entries - number of descriptors to be sent
|
|
* @subcrq - first TX descriptor
|
|
* @hdr_field - bit field determining which headers will be sent
|
|
*
|
|
* This function will build a TX descriptor array with applicable
|
|
* L2/L3/L4 packet header descriptors to be sent by send_subcrq_indirect.
|
|
*/
|
|
|
|
static void build_hdr_descs_arr(struct ibmvnic_tx_buff *txbuff,
|
|
int *num_entries, u8 hdr_field)
|
|
{
|
|
int hdr_len[3] = {0, 0, 0};
|
|
int tot_len, len;
|
|
u8 *hdr_data = txbuff->hdr_data;
|
|
|
|
tot_len = build_hdr_data(hdr_field, txbuff->skb, hdr_len,
|
|
txbuff->hdr_data);
|
|
len = tot_len;
|
|
len -= 24;
|
|
if (len > 0)
|
|
num_entries += len % 29 ? len / 29 + 1 : len / 29;
|
|
create_hdr_descs(hdr_field, hdr_data, tot_len, hdr_len,
|
|
txbuff->indir_arr + 1);
|
|
}
|
|
|
|
static int ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev)
|
|
{
|
|
struct ibmvnic_adapter *adapter = netdev_priv(netdev);
|
|
int queue_num = skb_get_queue_mapping(skb);
|
|
u8 *hdrs = (u8 *)&adapter->tx_rx_desc_req;
|
|
struct device *dev = &adapter->vdev->dev;
|
|
struct ibmvnic_tx_buff *tx_buff = NULL;
|
|
struct ibmvnic_tx_pool *tx_pool;
|
|
unsigned int tx_send_failed = 0;
|
|
unsigned int tx_map_failed = 0;
|
|
unsigned int tx_dropped = 0;
|
|
unsigned int tx_packets = 0;
|
|
unsigned int tx_bytes = 0;
|
|
dma_addr_t data_dma_addr;
|
|
struct netdev_queue *txq;
|
|
bool used_bounce = false;
|
|
unsigned long lpar_rc;
|
|
union sub_crq tx_crq;
|
|
unsigned int offset;
|
|
int num_entries = 1;
|
|
unsigned char *dst;
|
|
u64 *handle_array;
|
|
int index = 0;
|
|
int ret = 0;
|
|
|
|
tx_pool = &adapter->tx_pool[queue_num];
|
|
txq = netdev_get_tx_queue(netdev, skb_get_queue_mapping(skb));
|
|
handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) +
|
|
be32_to_cpu(adapter->login_rsp_buf->
|
|
off_txsubm_subcrqs));
|
|
if (adapter->migrated) {
|
|
tx_send_failed++;
|
|
tx_dropped++;
|
|
ret = NETDEV_TX_BUSY;
|
|
goto out;
|
|
}
|
|
|
|
index = tx_pool->free_map[tx_pool->consumer_index];
|
|
offset = index * adapter->req_mtu;
|
|
dst = tx_pool->long_term_buff.buff + offset;
|
|
memset(dst, 0, adapter->req_mtu);
|
|
skb_copy_from_linear_data(skb, dst, skb->len);
|
|
data_dma_addr = tx_pool->long_term_buff.addr + offset;
|
|
|
|
tx_pool->consumer_index =
|
|
(tx_pool->consumer_index + 1) %
|
|
adapter->max_tx_entries_per_subcrq;
|
|
|
|
tx_buff = &tx_pool->tx_buff[index];
|
|
tx_buff->skb = skb;
|
|
tx_buff->data_dma[0] = data_dma_addr;
|
|
tx_buff->data_len[0] = skb->len;
|
|
tx_buff->index = index;
|
|
tx_buff->pool_index = queue_num;
|
|
tx_buff->last_frag = true;
|
|
tx_buff->used_bounce = used_bounce;
|
|
|
|
memset(&tx_crq, 0, sizeof(tx_crq));
|
|
tx_crq.v1.first = IBMVNIC_CRQ_CMD;
|
|
tx_crq.v1.type = IBMVNIC_TX_DESC;
|
|
tx_crq.v1.n_crq_elem = 1;
|
|
tx_crq.v1.n_sge = 1;
|
|
tx_crq.v1.flags1 = IBMVNIC_TX_COMP_NEEDED;
|
|
tx_crq.v1.correlator = cpu_to_be32(index);
|
|
tx_crq.v1.dma_reg = cpu_to_be16(tx_pool->long_term_buff.map_id);
|
|
tx_crq.v1.sge_len = cpu_to_be32(skb->len);
|
|
tx_crq.v1.ioba = cpu_to_be64(data_dma_addr);
|
|
|
|
if (adapter->vlan_header_insertion) {
|
|
tx_crq.v1.flags2 |= IBMVNIC_TX_VLAN_INSERT;
|
|
tx_crq.v1.vlan_id = cpu_to_be16(skb->vlan_tci);
|
|
}
|
|
|
|
if (skb->protocol == htons(ETH_P_IP)) {
|
|
if (ip_hdr(skb)->version == 4)
|
|
tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV4;
|
|
else if (ip_hdr(skb)->version == 6)
|
|
tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV6;
|
|
|
|
if (ip_hdr(skb)->protocol == IPPROTO_TCP)
|
|
tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_TCP;
|
|
else if (ip_hdr(skb)->protocol != IPPROTO_TCP)
|
|
tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_UDP;
|
|
}
|
|
|
|
if (skb->ip_summed == CHECKSUM_PARTIAL) {
|
|
tx_crq.v1.flags1 |= IBMVNIC_TX_CHKSUM_OFFLOAD;
|
|
hdrs += 2;
|
|
}
|
|
/* determine if l2/3/4 headers are sent to firmware */
|
|
if ((*hdrs >> 7) & 1 &&
|
|
(skb->protocol == htons(ETH_P_IP) ||
|
|
skb->protocol == htons(ETH_P_IPV6))) {
|
|
build_hdr_descs_arr(tx_buff, &num_entries, *hdrs);
|
|
tx_crq.v1.n_crq_elem = num_entries;
|
|
tx_buff->indir_arr[0] = tx_crq;
|
|
tx_buff->indir_dma = dma_map_single(dev, tx_buff->indir_arr,
|
|
sizeof(tx_buff->indir_arr),
|
|
DMA_TO_DEVICE);
|
|
if (dma_mapping_error(dev, tx_buff->indir_dma)) {
|
|
if (!firmware_has_feature(FW_FEATURE_CMO))
|
|
dev_err(dev, "tx: unable to map descriptor array\n");
|
|
tx_map_failed++;
|
|
tx_dropped++;
|
|
ret = NETDEV_TX_BUSY;
|
|
goto out;
|
|
}
|
|
lpar_rc = send_subcrq_indirect(adapter, handle_array[queue_num],
|
|
(u64)tx_buff->indir_dma,
|
|
(u64)num_entries);
|
|
} else {
|
|
lpar_rc = send_subcrq(adapter, handle_array[queue_num],
|
|
&tx_crq);
|
|
}
|
|
if (lpar_rc != H_SUCCESS) {
|
|
dev_err(dev, "tx failed with code %ld\n", lpar_rc);
|
|
|
|
if (tx_pool->consumer_index == 0)
|
|
tx_pool->consumer_index =
|
|
adapter->max_tx_entries_per_subcrq - 1;
|
|
else
|
|
tx_pool->consumer_index--;
|
|
|
|
tx_send_failed++;
|
|
tx_dropped++;
|
|
ret = NETDEV_TX_BUSY;
|
|
goto out;
|
|
}
|
|
tx_packets++;
|
|
tx_bytes += skb->len;
|
|
txq->trans_start = jiffies;
|
|
ret = NETDEV_TX_OK;
|
|
|
|
out:
|
|
netdev->stats.tx_dropped += tx_dropped;
|
|
netdev->stats.tx_bytes += tx_bytes;
|
|
netdev->stats.tx_packets += tx_packets;
|
|
adapter->tx_send_failed += tx_send_failed;
|
|
adapter->tx_map_failed += tx_map_failed;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void ibmvnic_set_multi(struct net_device *netdev)
|
|
{
|
|
struct ibmvnic_adapter *adapter = netdev_priv(netdev);
|
|
struct netdev_hw_addr *ha;
|
|
union ibmvnic_crq crq;
|
|
|
|
memset(&crq, 0, sizeof(crq));
|
|
crq.request_capability.first = IBMVNIC_CRQ_CMD;
|
|
crq.request_capability.cmd = REQUEST_CAPABILITY;
|
|
|
|
if (netdev->flags & IFF_PROMISC) {
|
|
if (!adapter->promisc_supported)
|
|
return;
|
|
} else {
|
|
if (netdev->flags & IFF_ALLMULTI) {
|
|
/* Accept all multicast */
|
|
memset(&crq, 0, sizeof(crq));
|
|
crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD;
|
|
crq.multicast_ctrl.cmd = MULTICAST_CTRL;
|
|
crq.multicast_ctrl.flags = IBMVNIC_ENABLE_ALL;
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
} else if (netdev_mc_empty(netdev)) {
|
|
/* Reject all multicast */
|
|
memset(&crq, 0, sizeof(crq));
|
|
crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD;
|
|
crq.multicast_ctrl.cmd = MULTICAST_CTRL;
|
|
crq.multicast_ctrl.flags = IBMVNIC_DISABLE_ALL;
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
} else {
|
|
/* Accept one or more multicast(s) */
|
|
netdev_for_each_mc_addr(ha, netdev) {
|
|
memset(&crq, 0, sizeof(crq));
|
|
crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD;
|
|
crq.multicast_ctrl.cmd = MULTICAST_CTRL;
|
|
crq.multicast_ctrl.flags = IBMVNIC_ENABLE_MC;
|
|
ether_addr_copy(&crq.multicast_ctrl.mac_addr[0],
|
|
ha->addr);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static int ibmvnic_set_mac(struct net_device *netdev, void *p)
|
|
{
|
|
struct ibmvnic_adapter *adapter = netdev_priv(netdev);
|
|
struct sockaddr *addr = p;
|
|
union ibmvnic_crq crq;
|
|
|
|
if (!is_valid_ether_addr(addr->sa_data))
|
|
return -EADDRNOTAVAIL;
|
|
|
|
memset(&crq, 0, sizeof(crq));
|
|
crq.change_mac_addr.first = IBMVNIC_CRQ_CMD;
|
|
crq.change_mac_addr.cmd = CHANGE_MAC_ADDR;
|
|
ether_addr_copy(&crq.change_mac_addr.mac_addr[0], addr->sa_data);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
/* netdev->dev_addr is changed in handle_change_mac_rsp function */
|
|
return 0;
|
|
}
|
|
|
|
static int ibmvnic_change_mtu(struct net_device *netdev, int new_mtu)
|
|
{
|
|
struct ibmvnic_adapter *adapter = netdev_priv(netdev);
|
|
|
|
if (new_mtu > adapter->req_mtu || new_mtu < adapter->min_mtu)
|
|
return -EINVAL;
|
|
|
|
netdev->mtu = new_mtu;
|
|
return 0;
|
|
}
|
|
|
|
static void ibmvnic_tx_timeout(struct net_device *dev)
|
|
{
|
|
struct ibmvnic_adapter *adapter = netdev_priv(dev);
|
|
int rc;
|
|
|
|
/* Adapter timed out, resetting it */
|
|
release_sub_crqs(adapter);
|
|
rc = ibmvnic_reset_crq(adapter);
|
|
if (rc)
|
|
dev_err(&adapter->vdev->dev, "Adapter timeout, reset failed\n");
|
|
else
|
|
ibmvnic_send_crq_init(adapter);
|
|
}
|
|
|
|
static void remove_buff_from_pool(struct ibmvnic_adapter *adapter,
|
|
struct ibmvnic_rx_buff *rx_buff)
|
|
{
|
|
struct ibmvnic_rx_pool *pool = &adapter->rx_pool[rx_buff->pool_index];
|
|
|
|
rx_buff->skb = NULL;
|
|
|
|
pool->free_map[pool->next_alloc] = (int)(rx_buff - pool->rx_buff);
|
|
pool->next_alloc = (pool->next_alloc + 1) % pool->size;
|
|
|
|
atomic_dec(&pool->available);
|
|
}
|
|
|
|
static int ibmvnic_poll(struct napi_struct *napi, int budget)
|
|
{
|
|
struct net_device *netdev = napi->dev;
|
|
struct ibmvnic_adapter *adapter = netdev_priv(netdev);
|
|
int scrq_num = (int)(napi - adapter->napi);
|
|
int frames_processed = 0;
|
|
restart_poll:
|
|
while (frames_processed < budget) {
|
|
struct sk_buff *skb;
|
|
struct ibmvnic_rx_buff *rx_buff;
|
|
union sub_crq *next;
|
|
u32 length;
|
|
u16 offset;
|
|
u8 flags = 0;
|
|
|
|
if (!pending_scrq(adapter, adapter->rx_scrq[scrq_num]))
|
|
break;
|
|
next = ibmvnic_next_scrq(adapter, adapter->rx_scrq[scrq_num]);
|
|
rx_buff =
|
|
(struct ibmvnic_rx_buff *)be64_to_cpu(next->
|
|
rx_comp.correlator);
|
|
/* do error checking */
|
|
if (next->rx_comp.rc) {
|
|
netdev_err(netdev, "rx error %x\n", next->rx_comp.rc);
|
|
/* free the entry */
|
|
next->rx_comp.first = 0;
|
|
remove_buff_from_pool(adapter, rx_buff);
|
|
break;
|
|
}
|
|
|
|
length = be32_to_cpu(next->rx_comp.len);
|
|
offset = be16_to_cpu(next->rx_comp.off_frame_data);
|
|
flags = next->rx_comp.flags;
|
|
skb = rx_buff->skb;
|
|
skb_copy_to_linear_data(skb, rx_buff->data + offset,
|
|
length);
|
|
skb->vlan_tci = be16_to_cpu(next->rx_comp.vlan_tci);
|
|
/* free the entry */
|
|
next->rx_comp.first = 0;
|
|
remove_buff_from_pool(adapter, rx_buff);
|
|
|
|
skb_put(skb, length);
|
|
skb->protocol = eth_type_trans(skb, netdev);
|
|
|
|
if (flags & IBMVNIC_IP_CHKSUM_GOOD &&
|
|
flags & IBMVNIC_TCP_UDP_CHKSUM_GOOD) {
|
|
skb->ip_summed = CHECKSUM_UNNECESSARY;
|
|
}
|
|
|
|
length = skb->len;
|
|
napi_gro_receive(napi, skb); /* send it up */
|
|
netdev->stats.rx_packets++;
|
|
netdev->stats.rx_bytes += length;
|
|
frames_processed++;
|
|
}
|
|
replenish_rx_pool(adapter, &adapter->rx_pool[scrq_num]);
|
|
|
|
if (frames_processed < budget) {
|
|
enable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]);
|
|
napi_complete(napi);
|
|
if (pending_scrq(adapter, adapter->rx_scrq[scrq_num]) &&
|
|
napi_reschedule(napi)) {
|
|
disable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]);
|
|
goto restart_poll;
|
|
}
|
|
}
|
|
return frames_processed;
|
|
}
|
|
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
static void ibmvnic_netpoll_controller(struct net_device *dev)
|
|
{
|
|
struct ibmvnic_adapter *adapter = netdev_priv(dev);
|
|
int i;
|
|
|
|
replenish_pools(netdev_priv(dev));
|
|
for (i = 0; i < adapter->req_rx_queues; i++)
|
|
ibmvnic_interrupt_rx(adapter->rx_scrq[i]->irq,
|
|
adapter->rx_scrq[i]);
|
|
}
|
|
#endif
|
|
|
|
static const struct net_device_ops ibmvnic_netdev_ops = {
|
|
.ndo_open = ibmvnic_open,
|
|
.ndo_stop = ibmvnic_close,
|
|
.ndo_start_xmit = ibmvnic_xmit,
|
|
.ndo_set_rx_mode = ibmvnic_set_multi,
|
|
.ndo_set_mac_address = ibmvnic_set_mac,
|
|
.ndo_validate_addr = eth_validate_addr,
|
|
.ndo_change_mtu = ibmvnic_change_mtu,
|
|
.ndo_tx_timeout = ibmvnic_tx_timeout,
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
.ndo_poll_controller = ibmvnic_netpoll_controller,
|
|
#endif
|
|
};
|
|
|
|
/* ethtool functions */
|
|
|
|
static int ibmvnic_get_settings(struct net_device *netdev,
|
|
struct ethtool_cmd *cmd)
|
|
{
|
|
cmd->supported = (SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg |
|
|
SUPPORTED_FIBRE);
|
|
cmd->advertising = (ADVERTISED_1000baseT_Full | ADVERTISED_Autoneg |
|
|
ADVERTISED_FIBRE);
|
|
ethtool_cmd_speed_set(cmd, SPEED_1000);
|
|
cmd->duplex = DUPLEX_FULL;
|
|
cmd->port = PORT_FIBRE;
|
|
cmd->phy_address = 0;
|
|
cmd->transceiver = XCVR_INTERNAL;
|
|
cmd->autoneg = AUTONEG_ENABLE;
|
|
cmd->maxtxpkt = 0;
|
|
cmd->maxrxpkt = 1;
|
|
return 0;
|
|
}
|
|
|
|
static void ibmvnic_get_drvinfo(struct net_device *dev,
|
|
struct ethtool_drvinfo *info)
|
|
{
|
|
strlcpy(info->driver, ibmvnic_driver_name, sizeof(info->driver));
|
|
strlcpy(info->version, IBMVNIC_DRIVER_VERSION, sizeof(info->version));
|
|
}
|
|
|
|
static u32 ibmvnic_get_msglevel(struct net_device *netdev)
|
|
{
|
|
struct ibmvnic_adapter *adapter = netdev_priv(netdev);
|
|
|
|
return adapter->msg_enable;
|
|
}
|
|
|
|
static void ibmvnic_set_msglevel(struct net_device *netdev, u32 data)
|
|
{
|
|
struct ibmvnic_adapter *adapter = netdev_priv(netdev);
|
|
|
|
adapter->msg_enable = data;
|
|
}
|
|
|
|
static u32 ibmvnic_get_link(struct net_device *netdev)
|
|
{
|
|
struct ibmvnic_adapter *adapter = netdev_priv(netdev);
|
|
|
|
/* Don't need to send a query because we request a logical link up at
|
|
* init and then we wait for link state indications
|
|
*/
|
|
return adapter->logical_link_state;
|
|
}
|
|
|
|
static void ibmvnic_get_ringparam(struct net_device *netdev,
|
|
struct ethtool_ringparam *ring)
|
|
{
|
|
ring->rx_max_pending = 0;
|
|
ring->tx_max_pending = 0;
|
|
ring->rx_mini_max_pending = 0;
|
|
ring->rx_jumbo_max_pending = 0;
|
|
ring->rx_pending = 0;
|
|
ring->tx_pending = 0;
|
|
ring->rx_mini_pending = 0;
|
|
ring->rx_jumbo_pending = 0;
|
|
}
|
|
|
|
static void ibmvnic_get_strings(struct net_device *dev, u32 stringset, u8 *data)
|
|
{
|
|
int i;
|
|
|
|
if (stringset != ETH_SS_STATS)
|
|
return;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(ibmvnic_stats); i++, data += ETH_GSTRING_LEN)
|
|
memcpy(data, ibmvnic_stats[i].name, ETH_GSTRING_LEN);
|
|
}
|
|
|
|
static int ibmvnic_get_sset_count(struct net_device *dev, int sset)
|
|
{
|
|
switch (sset) {
|
|
case ETH_SS_STATS:
|
|
return ARRAY_SIZE(ibmvnic_stats);
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
}
|
|
|
|
static void ibmvnic_get_ethtool_stats(struct net_device *dev,
|
|
struct ethtool_stats *stats, u64 *data)
|
|
{
|
|
struct ibmvnic_adapter *adapter = netdev_priv(dev);
|
|
union ibmvnic_crq crq;
|
|
int i;
|
|
|
|
memset(&crq, 0, sizeof(crq));
|
|
crq.request_statistics.first = IBMVNIC_CRQ_CMD;
|
|
crq.request_statistics.cmd = REQUEST_STATISTICS;
|
|
crq.request_statistics.ioba = cpu_to_be32(adapter->stats_token);
|
|
crq.request_statistics.len =
|
|
cpu_to_be32(sizeof(struct ibmvnic_statistics));
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
/* Wait for data to be written */
|
|
init_completion(&adapter->stats_done);
|
|
wait_for_completion(&adapter->stats_done);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(ibmvnic_stats); i++)
|
|
data[i] = IBMVNIC_GET_STAT(adapter, ibmvnic_stats[i].offset);
|
|
}
|
|
|
|
static const struct ethtool_ops ibmvnic_ethtool_ops = {
|
|
.get_settings = ibmvnic_get_settings,
|
|
.get_drvinfo = ibmvnic_get_drvinfo,
|
|
.get_msglevel = ibmvnic_get_msglevel,
|
|
.set_msglevel = ibmvnic_set_msglevel,
|
|
.get_link = ibmvnic_get_link,
|
|
.get_ringparam = ibmvnic_get_ringparam,
|
|
.get_strings = ibmvnic_get_strings,
|
|
.get_sset_count = ibmvnic_get_sset_count,
|
|
.get_ethtool_stats = ibmvnic_get_ethtool_stats,
|
|
};
|
|
|
|
/* Routines for managing CRQs/sCRQs */
|
|
|
|
static void release_sub_crq_queue(struct ibmvnic_adapter *adapter,
|
|
struct ibmvnic_sub_crq_queue *scrq)
|
|
{
|
|
struct device *dev = &adapter->vdev->dev;
|
|
long rc;
|
|
|
|
netdev_dbg(adapter->netdev, "Releasing sub-CRQ\n");
|
|
|
|
/* Close the sub-crqs */
|
|
do {
|
|
rc = plpar_hcall_norets(H_FREE_SUB_CRQ,
|
|
adapter->vdev->unit_address,
|
|
scrq->crq_num);
|
|
} while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
|
|
|
|
dma_unmap_single(dev, scrq->msg_token, 4 * PAGE_SIZE,
|
|
DMA_BIDIRECTIONAL);
|
|
free_pages((unsigned long)scrq->msgs, 2);
|
|
kfree(scrq);
|
|
}
|
|
|
|
static struct ibmvnic_sub_crq_queue *init_sub_crq_queue(struct ibmvnic_adapter
|
|
*adapter)
|
|
{
|
|
struct device *dev = &adapter->vdev->dev;
|
|
struct ibmvnic_sub_crq_queue *scrq;
|
|
int rc;
|
|
|
|
scrq = kmalloc(sizeof(*scrq), GFP_ATOMIC);
|
|
if (!scrq)
|
|
return NULL;
|
|
|
|
scrq->msgs = (union sub_crq *)__get_free_pages(GFP_KERNEL, 2);
|
|
memset(scrq->msgs, 0, 4 * PAGE_SIZE);
|
|
if (!scrq->msgs) {
|
|
dev_warn(dev, "Couldn't allocate crq queue messages page\n");
|
|
goto zero_page_failed;
|
|
}
|
|
|
|
scrq->msg_token = dma_map_single(dev, scrq->msgs, 4 * PAGE_SIZE,
|
|
DMA_BIDIRECTIONAL);
|
|
if (dma_mapping_error(dev, scrq->msg_token)) {
|
|
dev_warn(dev, "Couldn't map crq queue messages page\n");
|
|
goto map_failed;
|
|
}
|
|
|
|
rc = h_reg_sub_crq(adapter->vdev->unit_address, scrq->msg_token,
|
|
4 * PAGE_SIZE, &scrq->crq_num, &scrq->hw_irq);
|
|
|
|
if (rc == H_RESOURCE)
|
|
rc = ibmvnic_reset_crq(adapter);
|
|
|
|
if (rc == H_CLOSED) {
|
|
dev_warn(dev, "Partner adapter not ready, waiting.\n");
|
|
} else if (rc) {
|
|
dev_warn(dev, "Error %d registering sub-crq\n", rc);
|
|
goto reg_failed;
|
|
}
|
|
|
|
scrq->adapter = adapter;
|
|
scrq->size = 4 * PAGE_SIZE / sizeof(*scrq->msgs);
|
|
scrq->cur = 0;
|
|
scrq->rx_skb_top = NULL;
|
|
spin_lock_init(&scrq->lock);
|
|
|
|
netdev_dbg(adapter->netdev,
|
|
"sub-crq initialized, num %lx, hw_irq=%lx, irq=%x\n",
|
|
scrq->crq_num, scrq->hw_irq, scrq->irq);
|
|
|
|
return scrq;
|
|
|
|
reg_failed:
|
|
dma_unmap_single(dev, scrq->msg_token, 4 * PAGE_SIZE,
|
|
DMA_BIDIRECTIONAL);
|
|
map_failed:
|
|
free_pages((unsigned long)scrq->msgs, 2);
|
|
zero_page_failed:
|
|
kfree(scrq);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void release_sub_crqs(struct ibmvnic_adapter *adapter)
|
|
{
|
|
int i;
|
|
|
|
if (adapter->tx_scrq) {
|
|
for (i = 0; i < adapter->req_tx_queues; i++)
|
|
if (adapter->tx_scrq[i]) {
|
|
free_irq(adapter->tx_scrq[i]->irq,
|
|
adapter->tx_scrq[i]);
|
|
irq_dispose_mapping(adapter->tx_scrq[i]->irq);
|
|
release_sub_crq_queue(adapter,
|
|
adapter->tx_scrq[i]);
|
|
}
|
|
adapter->tx_scrq = NULL;
|
|
}
|
|
|
|
if (adapter->rx_scrq) {
|
|
for (i = 0; i < adapter->req_rx_queues; i++)
|
|
if (adapter->rx_scrq[i]) {
|
|
free_irq(adapter->rx_scrq[i]->irq,
|
|
adapter->rx_scrq[i]);
|
|
irq_dispose_mapping(adapter->rx_scrq[i]->irq);
|
|
release_sub_crq_queue(adapter,
|
|
adapter->rx_scrq[i]);
|
|
}
|
|
adapter->rx_scrq = NULL;
|
|
}
|
|
|
|
adapter->requested_caps = 0;
|
|
}
|
|
|
|
static void release_sub_crqs_no_irqs(struct ibmvnic_adapter *adapter)
|
|
{
|
|
int i;
|
|
|
|
if (adapter->tx_scrq) {
|
|
for (i = 0; i < adapter->req_tx_queues; i++)
|
|
if (adapter->tx_scrq[i])
|
|
release_sub_crq_queue(adapter,
|
|
adapter->tx_scrq[i]);
|
|
adapter->tx_scrq = NULL;
|
|
}
|
|
|
|
if (adapter->rx_scrq) {
|
|
for (i = 0; i < adapter->req_rx_queues; i++)
|
|
if (adapter->rx_scrq[i])
|
|
release_sub_crq_queue(adapter,
|
|
adapter->rx_scrq[i]);
|
|
adapter->rx_scrq = NULL;
|
|
}
|
|
|
|
adapter->requested_caps = 0;
|
|
}
|
|
|
|
static int disable_scrq_irq(struct ibmvnic_adapter *adapter,
|
|
struct ibmvnic_sub_crq_queue *scrq)
|
|
{
|
|
struct device *dev = &adapter->vdev->dev;
|
|
unsigned long rc;
|
|
|
|
rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address,
|
|
H_DISABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0);
|
|
if (rc)
|
|
dev_err(dev, "Couldn't disable scrq irq 0x%lx. rc=%ld\n",
|
|
scrq->hw_irq, rc);
|
|
return rc;
|
|
}
|
|
|
|
static int enable_scrq_irq(struct ibmvnic_adapter *adapter,
|
|
struct ibmvnic_sub_crq_queue *scrq)
|
|
{
|
|
struct device *dev = &adapter->vdev->dev;
|
|
unsigned long rc;
|
|
|
|
if (scrq->hw_irq > 0x100000000ULL) {
|
|
dev_err(dev, "bad hw_irq = %lx\n", scrq->hw_irq);
|
|
return 1;
|
|
}
|
|
|
|
rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address,
|
|
H_ENABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0);
|
|
if (rc)
|
|
dev_err(dev, "Couldn't enable scrq irq 0x%lx. rc=%ld\n",
|
|
scrq->hw_irq, rc);
|
|
return rc;
|
|
}
|
|
|
|
static int ibmvnic_complete_tx(struct ibmvnic_adapter *adapter,
|
|
struct ibmvnic_sub_crq_queue *scrq)
|
|
{
|
|
struct device *dev = &adapter->vdev->dev;
|
|
struct ibmvnic_tx_buff *txbuff;
|
|
union sub_crq *next;
|
|
int index;
|
|
int i, j;
|
|
u8 first;
|
|
|
|
restart_loop:
|
|
while (pending_scrq(adapter, scrq)) {
|
|
unsigned int pool = scrq->pool_index;
|
|
|
|
next = ibmvnic_next_scrq(adapter, scrq);
|
|
for (i = 0; i < next->tx_comp.num_comps; i++) {
|
|
if (next->tx_comp.rcs[i]) {
|
|
dev_err(dev, "tx error %x\n",
|
|
next->tx_comp.rcs[i]);
|
|
continue;
|
|
}
|
|
index = be32_to_cpu(next->tx_comp.correlators[i]);
|
|
txbuff = &adapter->tx_pool[pool].tx_buff[index];
|
|
|
|
for (j = 0; j < IBMVNIC_MAX_FRAGS_PER_CRQ; j++) {
|
|
if (!txbuff->data_dma[j])
|
|
continue;
|
|
|
|
txbuff->data_dma[j] = 0;
|
|
txbuff->used_bounce = false;
|
|
}
|
|
/* if sub_crq was sent indirectly */
|
|
first = txbuff->indir_arr[0].generic.first;
|
|
if (first == IBMVNIC_CRQ_CMD) {
|
|
dma_unmap_single(dev, txbuff->indir_dma,
|
|
sizeof(txbuff->indir_arr),
|
|
DMA_TO_DEVICE);
|
|
}
|
|
|
|
if (txbuff->last_frag)
|
|
dev_kfree_skb_any(txbuff->skb);
|
|
|
|
adapter->tx_pool[pool].free_map[adapter->tx_pool[pool].
|
|
producer_index] = index;
|
|
adapter->tx_pool[pool].producer_index =
|
|
(adapter->tx_pool[pool].producer_index + 1) %
|
|
adapter->max_tx_entries_per_subcrq;
|
|
}
|
|
/* remove tx_comp scrq*/
|
|
next->tx_comp.first = 0;
|
|
}
|
|
|
|
enable_scrq_irq(adapter, scrq);
|
|
|
|
if (pending_scrq(adapter, scrq)) {
|
|
disable_scrq_irq(adapter, scrq);
|
|
goto restart_loop;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static irqreturn_t ibmvnic_interrupt_tx(int irq, void *instance)
|
|
{
|
|
struct ibmvnic_sub_crq_queue *scrq = instance;
|
|
struct ibmvnic_adapter *adapter = scrq->adapter;
|
|
|
|
disable_scrq_irq(adapter, scrq);
|
|
ibmvnic_complete_tx(adapter, scrq);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static irqreturn_t ibmvnic_interrupt_rx(int irq, void *instance)
|
|
{
|
|
struct ibmvnic_sub_crq_queue *scrq = instance;
|
|
struct ibmvnic_adapter *adapter = scrq->adapter;
|
|
|
|
if (napi_schedule_prep(&adapter->napi[scrq->scrq_num])) {
|
|
disable_scrq_irq(adapter, scrq);
|
|
__napi_schedule(&adapter->napi[scrq->scrq_num]);
|
|
}
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int init_sub_crq_irqs(struct ibmvnic_adapter *adapter)
|
|
{
|
|
struct device *dev = &adapter->vdev->dev;
|
|
struct ibmvnic_sub_crq_queue *scrq;
|
|
int i = 0, j = 0;
|
|
int rc = 0;
|
|
|
|
for (i = 0; i < adapter->req_tx_queues; i++) {
|
|
scrq = adapter->tx_scrq[i];
|
|
scrq->irq = irq_create_mapping(NULL, scrq->hw_irq);
|
|
|
|
if (scrq->irq == NO_IRQ) {
|
|
rc = -EINVAL;
|
|
dev_err(dev, "Error mapping irq\n");
|
|
goto req_tx_irq_failed;
|
|
}
|
|
|
|
rc = request_irq(scrq->irq, ibmvnic_interrupt_tx,
|
|
0, "ibmvnic_tx", scrq);
|
|
|
|
if (rc) {
|
|
dev_err(dev, "Couldn't register tx irq 0x%x. rc=%d\n",
|
|
scrq->irq, rc);
|
|
irq_dispose_mapping(scrq->irq);
|
|
goto req_rx_irq_failed;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < adapter->req_rx_queues; i++) {
|
|
scrq = adapter->rx_scrq[i];
|
|
scrq->irq = irq_create_mapping(NULL, scrq->hw_irq);
|
|
if (scrq->irq == NO_IRQ) {
|
|
rc = -EINVAL;
|
|
dev_err(dev, "Error mapping irq\n");
|
|
goto req_rx_irq_failed;
|
|
}
|
|
rc = request_irq(scrq->irq, ibmvnic_interrupt_rx,
|
|
0, "ibmvnic_rx", scrq);
|
|
if (rc) {
|
|
dev_err(dev, "Couldn't register rx irq 0x%x. rc=%d\n",
|
|
scrq->irq, rc);
|
|
irq_dispose_mapping(scrq->irq);
|
|
goto req_rx_irq_failed;
|
|
}
|
|
}
|
|
return rc;
|
|
|
|
req_rx_irq_failed:
|
|
for (j = 0; j < i; j++)
|
|
free_irq(adapter->rx_scrq[j]->irq, adapter->rx_scrq[j]);
|
|
irq_dispose_mapping(adapter->rx_scrq[j]->irq);
|
|
i = adapter->req_tx_queues;
|
|
req_tx_irq_failed:
|
|
for (j = 0; j < i; j++)
|
|
free_irq(adapter->tx_scrq[j]->irq, adapter->tx_scrq[j]);
|
|
irq_dispose_mapping(adapter->rx_scrq[j]->irq);
|
|
release_sub_crqs_no_irqs(adapter);
|
|
return rc;
|
|
}
|
|
|
|
static void init_sub_crqs(struct ibmvnic_adapter *adapter, int retry)
|
|
{
|
|
struct device *dev = &adapter->vdev->dev;
|
|
struct ibmvnic_sub_crq_queue **allqueues;
|
|
int registered_queues = 0;
|
|
union ibmvnic_crq crq;
|
|
int total_queues;
|
|
int more = 0;
|
|
int i;
|
|
|
|
if (!retry) {
|
|
/* Sub-CRQ entries are 32 byte long */
|
|
int entries_page = 4 * PAGE_SIZE / (sizeof(u64) * 4);
|
|
|
|
if (adapter->min_tx_entries_per_subcrq > entries_page ||
|
|
adapter->min_rx_add_entries_per_subcrq > entries_page) {
|
|
dev_err(dev, "Fatal, invalid entries per sub-crq\n");
|
|
goto allqueues_failed;
|
|
}
|
|
|
|
/* Get the minimum between the queried max and the entries
|
|
* that fit in our PAGE_SIZE
|
|
*/
|
|
adapter->req_tx_entries_per_subcrq =
|
|
adapter->max_tx_entries_per_subcrq > entries_page ?
|
|
entries_page : adapter->max_tx_entries_per_subcrq;
|
|
adapter->req_rx_add_entries_per_subcrq =
|
|
adapter->max_rx_add_entries_per_subcrq > entries_page ?
|
|
entries_page : adapter->max_rx_add_entries_per_subcrq;
|
|
|
|
/* Choosing the maximum number of queues supported by firmware*/
|
|
adapter->req_tx_queues = adapter->max_tx_queues;
|
|
adapter->req_rx_queues = adapter->max_rx_queues;
|
|
adapter->req_rx_add_queues = adapter->max_rx_add_queues;
|
|
|
|
adapter->req_mtu = adapter->max_mtu;
|
|
}
|
|
|
|
total_queues = adapter->req_tx_queues + adapter->req_rx_queues;
|
|
|
|
allqueues = kcalloc(total_queues, sizeof(*allqueues), GFP_ATOMIC);
|
|
if (!allqueues)
|
|
goto allqueues_failed;
|
|
|
|
for (i = 0; i < total_queues; i++) {
|
|
allqueues[i] = init_sub_crq_queue(adapter);
|
|
if (!allqueues[i]) {
|
|
dev_warn(dev, "Couldn't allocate all sub-crqs\n");
|
|
break;
|
|
}
|
|
registered_queues++;
|
|
}
|
|
|
|
/* Make sure we were able to register the minimum number of queues */
|
|
if (registered_queues <
|
|
adapter->min_tx_queues + adapter->min_rx_queues) {
|
|
dev_err(dev, "Fatal: Couldn't init min number of sub-crqs\n");
|
|
goto tx_failed;
|
|
}
|
|
|
|
/* Distribute the failed allocated queues*/
|
|
for (i = 0; i < total_queues - registered_queues + more ; i++) {
|
|
netdev_dbg(adapter->netdev, "Reducing number of queues\n");
|
|
switch (i % 3) {
|
|
case 0:
|
|
if (adapter->req_rx_queues > adapter->min_rx_queues)
|
|
adapter->req_rx_queues--;
|
|
else
|
|
more++;
|
|
break;
|
|
case 1:
|
|
if (adapter->req_tx_queues > adapter->min_tx_queues)
|
|
adapter->req_tx_queues--;
|
|
else
|
|
more++;
|
|
break;
|
|
}
|
|
}
|
|
|
|
adapter->tx_scrq = kcalloc(adapter->req_tx_queues,
|
|
sizeof(*adapter->tx_scrq), GFP_ATOMIC);
|
|
if (!adapter->tx_scrq)
|
|
goto tx_failed;
|
|
|
|
for (i = 0; i < adapter->req_tx_queues; i++) {
|
|
adapter->tx_scrq[i] = allqueues[i];
|
|
adapter->tx_scrq[i]->pool_index = i;
|
|
}
|
|
|
|
adapter->rx_scrq = kcalloc(adapter->req_rx_queues,
|
|
sizeof(*adapter->rx_scrq), GFP_ATOMIC);
|
|
if (!adapter->rx_scrq)
|
|
goto rx_failed;
|
|
|
|
for (i = 0; i < adapter->req_rx_queues; i++) {
|
|
adapter->rx_scrq[i] = allqueues[i + adapter->req_tx_queues];
|
|
adapter->rx_scrq[i]->scrq_num = i;
|
|
}
|
|
|
|
memset(&crq, 0, sizeof(crq));
|
|
crq.request_capability.first = IBMVNIC_CRQ_CMD;
|
|
crq.request_capability.cmd = REQUEST_CAPABILITY;
|
|
|
|
crq.request_capability.capability = cpu_to_be16(REQ_TX_QUEUES);
|
|
crq.request_capability.number = cpu_to_be64(adapter->req_tx_queues);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
crq.request_capability.capability = cpu_to_be16(REQ_RX_QUEUES);
|
|
crq.request_capability.number = cpu_to_be64(adapter->req_rx_queues);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
crq.request_capability.capability = cpu_to_be16(REQ_RX_ADD_QUEUES);
|
|
crq.request_capability.number = cpu_to_be64(adapter->req_rx_add_queues);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
crq.request_capability.capability =
|
|
cpu_to_be16(REQ_TX_ENTRIES_PER_SUBCRQ);
|
|
crq.request_capability.number =
|
|
cpu_to_be64(adapter->req_tx_entries_per_subcrq);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
crq.request_capability.capability =
|
|
cpu_to_be16(REQ_RX_ADD_ENTRIES_PER_SUBCRQ);
|
|
crq.request_capability.number =
|
|
cpu_to_be64(adapter->req_rx_add_entries_per_subcrq);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
crq.request_capability.capability = cpu_to_be16(REQ_MTU);
|
|
crq.request_capability.number = cpu_to_be64(adapter->req_mtu);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
if (adapter->netdev->flags & IFF_PROMISC) {
|
|
if (adapter->promisc_supported) {
|
|
crq.request_capability.capability =
|
|
cpu_to_be16(PROMISC_REQUESTED);
|
|
crq.request_capability.number = cpu_to_be64(1);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
}
|
|
} else {
|
|
crq.request_capability.capability =
|
|
cpu_to_be16(PROMISC_REQUESTED);
|
|
crq.request_capability.number = cpu_to_be64(0);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
}
|
|
|
|
kfree(allqueues);
|
|
|
|
return;
|
|
|
|
rx_failed:
|
|
kfree(adapter->tx_scrq);
|
|
adapter->tx_scrq = NULL;
|
|
tx_failed:
|
|
for (i = 0; i < registered_queues; i++)
|
|
release_sub_crq_queue(adapter, allqueues[i]);
|
|
kfree(allqueues);
|
|
allqueues_failed:
|
|
ibmvnic_remove(adapter->vdev);
|
|
}
|
|
|
|
static int pending_scrq(struct ibmvnic_adapter *adapter,
|
|
struct ibmvnic_sub_crq_queue *scrq)
|
|
{
|
|
union sub_crq *entry = &scrq->msgs[scrq->cur];
|
|
|
|
if (entry->generic.first & IBMVNIC_CRQ_CMD_RSP || adapter->closing)
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static union sub_crq *ibmvnic_next_scrq(struct ibmvnic_adapter *adapter,
|
|
struct ibmvnic_sub_crq_queue *scrq)
|
|
{
|
|
union sub_crq *entry;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&scrq->lock, flags);
|
|
entry = &scrq->msgs[scrq->cur];
|
|
if (entry->generic.first & IBMVNIC_CRQ_CMD_RSP) {
|
|
if (++scrq->cur == scrq->size)
|
|
scrq->cur = 0;
|
|
} else {
|
|
entry = NULL;
|
|
}
|
|
spin_unlock_irqrestore(&scrq->lock, flags);
|
|
|
|
return entry;
|
|
}
|
|
|
|
static union ibmvnic_crq *ibmvnic_next_crq(struct ibmvnic_adapter *adapter)
|
|
{
|
|
struct ibmvnic_crq_queue *queue = &adapter->crq;
|
|
union ibmvnic_crq *crq;
|
|
|
|
crq = &queue->msgs[queue->cur];
|
|
if (crq->generic.first & IBMVNIC_CRQ_CMD_RSP) {
|
|
if (++queue->cur == queue->size)
|
|
queue->cur = 0;
|
|
} else {
|
|
crq = NULL;
|
|
}
|
|
|
|
return crq;
|
|
}
|
|
|
|
static int send_subcrq(struct ibmvnic_adapter *adapter, u64 remote_handle,
|
|
union sub_crq *sub_crq)
|
|
{
|
|
unsigned int ua = adapter->vdev->unit_address;
|
|
struct device *dev = &adapter->vdev->dev;
|
|
u64 *u64_crq = (u64 *)sub_crq;
|
|
int rc;
|
|
|
|
netdev_dbg(adapter->netdev,
|
|
"Sending sCRQ %016lx: %016lx %016lx %016lx %016lx\n",
|
|
(unsigned long int)cpu_to_be64(remote_handle),
|
|
(unsigned long int)cpu_to_be64(u64_crq[0]),
|
|
(unsigned long int)cpu_to_be64(u64_crq[1]),
|
|
(unsigned long int)cpu_to_be64(u64_crq[2]),
|
|
(unsigned long int)cpu_to_be64(u64_crq[3]));
|
|
|
|
/* Make sure the hypervisor sees the complete request */
|
|
mb();
|
|
|
|
rc = plpar_hcall_norets(H_SEND_SUB_CRQ, ua,
|
|
cpu_to_be64(remote_handle),
|
|
cpu_to_be64(u64_crq[0]),
|
|
cpu_to_be64(u64_crq[1]),
|
|
cpu_to_be64(u64_crq[2]),
|
|
cpu_to_be64(u64_crq[3]));
|
|
|
|
if (rc) {
|
|
if (rc == H_CLOSED)
|
|
dev_warn(dev, "CRQ Queue closed\n");
|
|
dev_err(dev, "Send error (rc=%d)\n", rc);
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int send_subcrq_indirect(struct ibmvnic_adapter *adapter,
|
|
u64 remote_handle, u64 ioba, u64 num_entries)
|
|
{
|
|
unsigned int ua = adapter->vdev->unit_address;
|
|
struct device *dev = &adapter->vdev->dev;
|
|
int rc;
|
|
|
|
/* Make sure the hypervisor sees the complete request */
|
|
mb();
|
|
rc = plpar_hcall_norets(H_SEND_SUB_CRQ_INDIRECT, ua,
|
|
cpu_to_be64(remote_handle),
|
|
ioba, num_entries);
|
|
|
|
if (rc) {
|
|
if (rc == H_CLOSED)
|
|
dev_warn(dev, "CRQ Queue closed\n");
|
|
dev_err(dev, "Send (indirect) error (rc=%d)\n", rc);
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int ibmvnic_send_crq(struct ibmvnic_adapter *adapter,
|
|
union ibmvnic_crq *crq)
|
|
{
|
|
unsigned int ua = adapter->vdev->unit_address;
|
|
struct device *dev = &adapter->vdev->dev;
|
|
u64 *u64_crq = (u64 *)crq;
|
|
int rc;
|
|
|
|
netdev_dbg(adapter->netdev, "Sending CRQ: %016lx %016lx\n",
|
|
(unsigned long int)cpu_to_be64(u64_crq[0]),
|
|
(unsigned long int)cpu_to_be64(u64_crq[1]));
|
|
|
|
/* Make sure the hypervisor sees the complete request */
|
|
mb();
|
|
|
|
rc = plpar_hcall_norets(H_SEND_CRQ, ua,
|
|
cpu_to_be64(u64_crq[0]),
|
|
cpu_to_be64(u64_crq[1]));
|
|
|
|
if (rc) {
|
|
if (rc == H_CLOSED)
|
|
dev_warn(dev, "CRQ Queue closed\n");
|
|
dev_warn(dev, "Send error (rc=%d)\n", rc);
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int ibmvnic_send_crq_init(struct ibmvnic_adapter *adapter)
|
|
{
|
|
union ibmvnic_crq crq;
|
|
|
|
memset(&crq, 0, sizeof(crq));
|
|
crq.generic.first = IBMVNIC_CRQ_INIT_CMD;
|
|
crq.generic.cmd = IBMVNIC_CRQ_INIT;
|
|
netdev_dbg(adapter->netdev, "Sending CRQ init\n");
|
|
|
|
return ibmvnic_send_crq(adapter, &crq);
|
|
}
|
|
|
|
static int ibmvnic_send_crq_init_complete(struct ibmvnic_adapter *adapter)
|
|
{
|
|
union ibmvnic_crq crq;
|
|
|
|
memset(&crq, 0, sizeof(crq));
|
|
crq.generic.first = IBMVNIC_CRQ_INIT_CMD;
|
|
crq.generic.cmd = IBMVNIC_CRQ_INIT_COMPLETE;
|
|
netdev_dbg(adapter->netdev, "Sending CRQ init complete\n");
|
|
|
|
return ibmvnic_send_crq(adapter, &crq);
|
|
}
|
|
|
|
static int send_version_xchg(struct ibmvnic_adapter *adapter)
|
|
{
|
|
union ibmvnic_crq crq;
|
|
|
|
memset(&crq, 0, sizeof(crq));
|
|
crq.version_exchange.first = IBMVNIC_CRQ_CMD;
|
|
crq.version_exchange.cmd = VERSION_EXCHANGE;
|
|
crq.version_exchange.version = cpu_to_be16(ibmvnic_version);
|
|
|
|
return ibmvnic_send_crq(adapter, &crq);
|
|
}
|
|
|
|
static void send_login(struct ibmvnic_adapter *adapter)
|
|
{
|
|
struct ibmvnic_login_rsp_buffer *login_rsp_buffer;
|
|
struct ibmvnic_login_buffer *login_buffer;
|
|
struct ibmvnic_inflight_cmd *inflight_cmd;
|
|
struct device *dev = &adapter->vdev->dev;
|
|
dma_addr_t rsp_buffer_token;
|
|
dma_addr_t buffer_token;
|
|
size_t rsp_buffer_size;
|
|
union ibmvnic_crq crq;
|
|
unsigned long flags;
|
|
size_t buffer_size;
|
|
__be64 *tx_list_p;
|
|
__be64 *rx_list_p;
|
|
int i;
|
|
|
|
buffer_size =
|
|
sizeof(struct ibmvnic_login_buffer) +
|
|
sizeof(u64) * (adapter->req_tx_queues + adapter->req_rx_queues);
|
|
|
|
login_buffer = kmalloc(buffer_size, GFP_ATOMIC);
|
|
if (!login_buffer)
|
|
goto buf_alloc_failed;
|
|
|
|
buffer_token = dma_map_single(dev, login_buffer, buffer_size,
|
|
DMA_TO_DEVICE);
|
|
if (dma_mapping_error(dev, buffer_token)) {
|
|
dev_err(dev, "Couldn't map login buffer\n");
|
|
goto buf_map_failed;
|
|
}
|
|
|
|
rsp_buffer_size = sizeof(struct ibmvnic_login_rsp_buffer) +
|
|
sizeof(u64) * adapter->req_tx_queues +
|
|
sizeof(u64) * adapter->req_rx_queues +
|
|
sizeof(u64) * adapter->req_rx_queues +
|
|
sizeof(u8) * IBMVNIC_TX_DESC_VERSIONS;
|
|
|
|
login_rsp_buffer = kmalloc(rsp_buffer_size, GFP_ATOMIC);
|
|
if (!login_rsp_buffer)
|
|
goto buf_rsp_alloc_failed;
|
|
|
|
rsp_buffer_token = dma_map_single(dev, login_rsp_buffer,
|
|
rsp_buffer_size, DMA_FROM_DEVICE);
|
|
if (dma_mapping_error(dev, rsp_buffer_token)) {
|
|
dev_err(dev, "Couldn't map login rsp buffer\n");
|
|
goto buf_rsp_map_failed;
|
|
}
|
|
inflight_cmd = kmalloc(sizeof(*inflight_cmd), GFP_ATOMIC);
|
|
if (!inflight_cmd) {
|
|
dev_err(dev, "Couldn't allocate inflight_cmd\n");
|
|
goto inflight_alloc_failed;
|
|
}
|
|
adapter->login_buf = login_buffer;
|
|
adapter->login_buf_token = buffer_token;
|
|
adapter->login_buf_sz = buffer_size;
|
|
adapter->login_rsp_buf = login_rsp_buffer;
|
|
adapter->login_rsp_buf_token = rsp_buffer_token;
|
|
adapter->login_rsp_buf_sz = rsp_buffer_size;
|
|
|
|
login_buffer->len = cpu_to_be32(buffer_size);
|
|
login_buffer->version = cpu_to_be32(INITIAL_VERSION_LB);
|
|
login_buffer->num_txcomp_subcrqs = cpu_to_be32(adapter->req_tx_queues);
|
|
login_buffer->off_txcomp_subcrqs =
|
|
cpu_to_be32(sizeof(struct ibmvnic_login_buffer));
|
|
login_buffer->num_rxcomp_subcrqs = cpu_to_be32(adapter->req_rx_queues);
|
|
login_buffer->off_rxcomp_subcrqs =
|
|
cpu_to_be32(sizeof(struct ibmvnic_login_buffer) +
|
|
sizeof(u64) * adapter->req_tx_queues);
|
|
login_buffer->login_rsp_ioba = cpu_to_be32(rsp_buffer_token);
|
|
login_buffer->login_rsp_len = cpu_to_be32(rsp_buffer_size);
|
|
|
|
tx_list_p = (__be64 *)((char *)login_buffer +
|
|
sizeof(struct ibmvnic_login_buffer));
|
|
rx_list_p = (__be64 *)((char *)login_buffer +
|
|
sizeof(struct ibmvnic_login_buffer) +
|
|
sizeof(u64) * adapter->req_tx_queues);
|
|
|
|
for (i = 0; i < adapter->req_tx_queues; i++) {
|
|
if (adapter->tx_scrq[i]) {
|
|
tx_list_p[i] = cpu_to_be64(adapter->tx_scrq[i]->
|
|
crq_num);
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < adapter->req_rx_queues; i++) {
|
|
if (adapter->rx_scrq[i]) {
|
|
rx_list_p[i] = cpu_to_be64(adapter->rx_scrq[i]->
|
|
crq_num);
|
|
}
|
|
}
|
|
|
|
netdev_dbg(adapter->netdev, "Login Buffer:\n");
|
|
for (i = 0; i < (adapter->login_buf_sz - 1) / 8 + 1; i++) {
|
|
netdev_dbg(adapter->netdev, "%016lx\n",
|
|
((unsigned long int *)(adapter->login_buf))[i]);
|
|
}
|
|
|
|
memset(&crq, 0, sizeof(crq));
|
|
crq.login.first = IBMVNIC_CRQ_CMD;
|
|
crq.login.cmd = LOGIN;
|
|
crq.login.ioba = cpu_to_be32(buffer_token);
|
|
crq.login.len = cpu_to_be32(buffer_size);
|
|
|
|
memcpy(&inflight_cmd->crq, &crq, sizeof(crq));
|
|
|
|
spin_lock_irqsave(&adapter->inflight_lock, flags);
|
|
list_add_tail(&inflight_cmd->list, &adapter->inflight);
|
|
spin_unlock_irqrestore(&adapter->inflight_lock, flags);
|
|
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
return;
|
|
|
|
inflight_alloc_failed:
|
|
dma_unmap_single(dev, rsp_buffer_token, rsp_buffer_size,
|
|
DMA_FROM_DEVICE);
|
|
buf_rsp_map_failed:
|
|
kfree(login_rsp_buffer);
|
|
buf_rsp_alloc_failed:
|
|
dma_unmap_single(dev, buffer_token, buffer_size, DMA_TO_DEVICE);
|
|
buf_map_failed:
|
|
kfree(login_buffer);
|
|
buf_alloc_failed:
|
|
return;
|
|
}
|
|
|
|
static void send_request_map(struct ibmvnic_adapter *adapter, dma_addr_t addr,
|
|
u32 len, u8 map_id)
|
|
{
|
|
union ibmvnic_crq crq;
|
|
|
|
memset(&crq, 0, sizeof(crq));
|
|
crq.request_map.first = IBMVNIC_CRQ_CMD;
|
|
crq.request_map.cmd = REQUEST_MAP;
|
|
crq.request_map.map_id = map_id;
|
|
crq.request_map.ioba = cpu_to_be32(addr);
|
|
crq.request_map.len = cpu_to_be32(len);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
}
|
|
|
|
static void send_request_unmap(struct ibmvnic_adapter *adapter, u8 map_id)
|
|
{
|
|
union ibmvnic_crq crq;
|
|
|
|
memset(&crq, 0, sizeof(crq));
|
|
crq.request_unmap.first = IBMVNIC_CRQ_CMD;
|
|
crq.request_unmap.cmd = REQUEST_UNMAP;
|
|
crq.request_unmap.map_id = map_id;
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
}
|
|
|
|
static void send_map_query(struct ibmvnic_adapter *adapter)
|
|
{
|
|
union ibmvnic_crq crq;
|
|
|
|
memset(&crq, 0, sizeof(crq));
|
|
crq.query_map.first = IBMVNIC_CRQ_CMD;
|
|
crq.query_map.cmd = QUERY_MAP;
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
}
|
|
|
|
/* Send a series of CRQs requesting various capabilities of the VNIC server */
|
|
static void send_cap_queries(struct ibmvnic_adapter *adapter)
|
|
{
|
|
union ibmvnic_crq crq;
|
|
|
|
atomic_set(&adapter->running_cap_queries, 0);
|
|
memset(&crq, 0, sizeof(crq));
|
|
crq.query_capability.first = IBMVNIC_CRQ_CMD;
|
|
crq.query_capability.cmd = QUERY_CAPABILITY;
|
|
|
|
crq.query_capability.capability = cpu_to_be16(MIN_TX_QUEUES);
|
|
atomic_inc(&adapter->running_cap_queries);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
crq.query_capability.capability = cpu_to_be16(MIN_RX_QUEUES);
|
|
atomic_inc(&adapter->running_cap_queries);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
crq.query_capability.capability = cpu_to_be16(MIN_RX_ADD_QUEUES);
|
|
atomic_inc(&adapter->running_cap_queries);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
crq.query_capability.capability = cpu_to_be16(MAX_TX_QUEUES);
|
|
atomic_inc(&adapter->running_cap_queries);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
crq.query_capability.capability = cpu_to_be16(MAX_RX_QUEUES);
|
|
atomic_inc(&adapter->running_cap_queries);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
crq.query_capability.capability = cpu_to_be16(MAX_RX_ADD_QUEUES);
|
|
atomic_inc(&adapter->running_cap_queries);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
crq.query_capability.capability =
|
|
cpu_to_be16(MIN_TX_ENTRIES_PER_SUBCRQ);
|
|
atomic_inc(&adapter->running_cap_queries);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
crq.query_capability.capability =
|
|
cpu_to_be16(MIN_RX_ADD_ENTRIES_PER_SUBCRQ);
|
|
atomic_inc(&adapter->running_cap_queries);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
crq.query_capability.capability =
|
|
cpu_to_be16(MAX_TX_ENTRIES_PER_SUBCRQ);
|
|
atomic_inc(&adapter->running_cap_queries);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
crq.query_capability.capability =
|
|
cpu_to_be16(MAX_RX_ADD_ENTRIES_PER_SUBCRQ);
|
|
atomic_inc(&adapter->running_cap_queries);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
crq.query_capability.capability = cpu_to_be16(TCP_IP_OFFLOAD);
|
|
atomic_inc(&adapter->running_cap_queries);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
crq.query_capability.capability = cpu_to_be16(PROMISC_SUPPORTED);
|
|
atomic_inc(&adapter->running_cap_queries);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
crq.query_capability.capability = cpu_to_be16(MIN_MTU);
|
|
atomic_inc(&adapter->running_cap_queries);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
crq.query_capability.capability = cpu_to_be16(MAX_MTU);
|
|
atomic_inc(&adapter->running_cap_queries);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
crq.query_capability.capability = cpu_to_be16(MAX_MULTICAST_FILTERS);
|
|
atomic_inc(&adapter->running_cap_queries);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
crq.query_capability.capability = cpu_to_be16(VLAN_HEADER_INSERTION);
|
|
atomic_inc(&adapter->running_cap_queries);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
crq.query_capability.capability = cpu_to_be16(MAX_TX_SG_ENTRIES);
|
|
atomic_inc(&adapter->running_cap_queries);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
crq.query_capability.capability = cpu_to_be16(RX_SG_SUPPORTED);
|
|
atomic_inc(&adapter->running_cap_queries);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
crq.query_capability.capability = cpu_to_be16(OPT_TX_COMP_SUB_QUEUES);
|
|
atomic_inc(&adapter->running_cap_queries);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
crq.query_capability.capability = cpu_to_be16(OPT_RX_COMP_QUEUES);
|
|
atomic_inc(&adapter->running_cap_queries);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
crq.query_capability.capability =
|
|
cpu_to_be16(OPT_RX_BUFADD_Q_PER_RX_COMP_Q);
|
|
atomic_inc(&adapter->running_cap_queries);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
crq.query_capability.capability =
|
|
cpu_to_be16(OPT_TX_ENTRIES_PER_SUBCRQ);
|
|
atomic_inc(&adapter->running_cap_queries);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
crq.query_capability.capability =
|
|
cpu_to_be16(OPT_RXBA_ENTRIES_PER_SUBCRQ);
|
|
atomic_inc(&adapter->running_cap_queries);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
crq.query_capability.capability = cpu_to_be16(TX_RX_DESC_REQ);
|
|
atomic_inc(&adapter->running_cap_queries);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
}
|
|
|
|
static void handle_query_ip_offload_rsp(struct ibmvnic_adapter *adapter)
|
|
{
|
|
struct device *dev = &adapter->vdev->dev;
|
|
struct ibmvnic_query_ip_offload_buffer *buf = &adapter->ip_offload_buf;
|
|
union ibmvnic_crq crq;
|
|
int i;
|
|
|
|
dma_unmap_single(dev, adapter->ip_offload_tok,
|
|
sizeof(adapter->ip_offload_buf), DMA_FROM_DEVICE);
|
|
|
|
netdev_dbg(adapter->netdev, "Query IP Offload Buffer:\n");
|
|
for (i = 0; i < (sizeof(adapter->ip_offload_buf) - 1) / 8 + 1; i++)
|
|
netdev_dbg(adapter->netdev, "%016lx\n",
|
|
((unsigned long int *)(buf))[i]);
|
|
|
|
netdev_dbg(adapter->netdev, "ipv4_chksum = %d\n", buf->ipv4_chksum);
|
|
netdev_dbg(adapter->netdev, "ipv6_chksum = %d\n", buf->ipv6_chksum);
|
|
netdev_dbg(adapter->netdev, "tcp_ipv4_chksum = %d\n",
|
|
buf->tcp_ipv4_chksum);
|
|
netdev_dbg(adapter->netdev, "tcp_ipv6_chksum = %d\n",
|
|
buf->tcp_ipv6_chksum);
|
|
netdev_dbg(adapter->netdev, "udp_ipv4_chksum = %d\n",
|
|
buf->udp_ipv4_chksum);
|
|
netdev_dbg(adapter->netdev, "udp_ipv6_chksum = %d\n",
|
|
buf->udp_ipv6_chksum);
|
|
netdev_dbg(adapter->netdev, "large_tx_ipv4 = %d\n",
|
|
buf->large_tx_ipv4);
|
|
netdev_dbg(adapter->netdev, "large_tx_ipv6 = %d\n",
|
|
buf->large_tx_ipv6);
|
|
netdev_dbg(adapter->netdev, "large_rx_ipv4 = %d\n",
|
|
buf->large_rx_ipv4);
|
|
netdev_dbg(adapter->netdev, "large_rx_ipv6 = %d\n",
|
|
buf->large_rx_ipv6);
|
|
netdev_dbg(adapter->netdev, "max_ipv4_hdr_sz = %d\n",
|
|
buf->max_ipv4_header_size);
|
|
netdev_dbg(adapter->netdev, "max_ipv6_hdr_sz = %d\n",
|
|
buf->max_ipv6_header_size);
|
|
netdev_dbg(adapter->netdev, "max_tcp_hdr_size = %d\n",
|
|
buf->max_tcp_header_size);
|
|
netdev_dbg(adapter->netdev, "max_udp_hdr_size = %d\n",
|
|
buf->max_udp_header_size);
|
|
netdev_dbg(adapter->netdev, "max_large_tx_size = %d\n",
|
|
buf->max_large_tx_size);
|
|
netdev_dbg(adapter->netdev, "max_large_rx_size = %d\n",
|
|
buf->max_large_rx_size);
|
|
netdev_dbg(adapter->netdev, "ipv6_ext_hdr = %d\n",
|
|
buf->ipv6_extension_header);
|
|
netdev_dbg(adapter->netdev, "tcp_pseudosum_req = %d\n",
|
|
buf->tcp_pseudosum_req);
|
|
netdev_dbg(adapter->netdev, "num_ipv6_ext_hd = %d\n",
|
|
buf->num_ipv6_ext_headers);
|
|
netdev_dbg(adapter->netdev, "off_ipv6_ext_hd = %d\n",
|
|
buf->off_ipv6_ext_headers);
|
|
|
|
adapter->ip_offload_ctrl_tok =
|
|
dma_map_single(dev, &adapter->ip_offload_ctrl,
|
|
sizeof(adapter->ip_offload_ctrl), DMA_TO_DEVICE);
|
|
|
|
if (dma_mapping_error(dev, adapter->ip_offload_ctrl_tok)) {
|
|
dev_err(dev, "Couldn't map ip offload control buffer\n");
|
|
return;
|
|
}
|
|
|
|
adapter->ip_offload_ctrl.version = cpu_to_be32(INITIAL_VERSION_IOB);
|
|
adapter->ip_offload_ctrl.tcp_ipv4_chksum = buf->tcp_ipv4_chksum;
|
|
adapter->ip_offload_ctrl.udp_ipv4_chksum = buf->udp_ipv4_chksum;
|
|
adapter->ip_offload_ctrl.tcp_ipv6_chksum = buf->tcp_ipv6_chksum;
|
|
adapter->ip_offload_ctrl.udp_ipv6_chksum = buf->udp_ipv6_chksum;
|
|
|
|
/* large_tx/rx disabled for now, additional features needed */
|
|
adapter->ip_offload_ctrl.large_tx_ipv4 = 0;
|
|
adapter->ip_offload_ctrl.large_tx_ipv6 = 0;
|
|
adapter->ip_offload_ctrl.large_rx_ipv4 = 0;
|
|
adapter->ip_offload_ctrl.large_rx_ipv6 = 0;
|
|
|
|
adapter->netdev->features = NETIF_F_GSO;
|
|
|
|
if (buf->tcp_ipv4_chksum || buf->udp_ipv4_chksum)
|
|
adapter->netdev->features |= NETIF_F_IP_CSUM;
|
|
|
|
if (buf->tcp_ipv6_chksum || buf->udp_ipv6_chksum)
|
|
adapter->netdev->features |= NETIF_F_IPV6_CSUM;
|
|
|
|
if ((adapter->netdev->features &
|
|
(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM)))
|
|
adapter->netdev->features |= NETIF_F_RXCSUM;
|
|
|
|
memset(&crq, 0, sizeof(crq));
|
|
crq.control_ip_offload.first = IBMVNIC_CRQ_CMD;
|
|
crq.control_ip_offload.cmd = CONTROL_IP_OFFLOAD;
|
|
crq.control_ip_offload.len =
|
|
cpu_to_be32(sizeof(adapter->ip_offload_ctrl));
|
|
crq.control_ip_offload.ioba = cpu_to_be32(adapter->ip_offload_ctrl_tok);
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
}
|
|
|
|
static void handle_error_info_rsp(union ibmvnic_crq *crq,
|
|
struct ibmvnic_adapter *adapter)
|
|
{
|
|
struct device *dev = &adapter->vdev->dev;
|
|
struct ibmvnic_error_buff *error_buff, *tmp;
|
|
unsigned long flags;
|
|
bool found = false;
|
|
int i;
|
|
|
|
if (!crq->request_error_rsp.rc.code) {
|
|
dev_info(dev, "Request Error Rsp returned with rc=%x\n",
|
|
crq->request_error_rsp.rc.code);
|
|
return;
|
|
}
|
|
|
|
spin_lock_irqsave(&adapter->error_list_lock, flags);
|
|
list_for_each_entry_safe(error_buff, tmp, &adapter->errors, list)
|
|
if (error_buff->error_id == crq->request_error_rsp.error_id) {
|
|
found = true;
|
|
list_del(&error_buff->list);
|
|
break;
|
|
}
|
|
spin_unlock_irqrestore(&adapter->error_list_lock, flags);
|
|
|
|
if (!found) {
|
|
dev_err(dev, "Couldn't find error id %x\n",
|
|
crq->request_error_rsp.error_id);
|
|
return;
|
|
}
|
|
|
|
dev_err(dev, "Detailed info for error id %x:",
|
|
crq->request_error_rsp.error_id);
|
|
|
|
for (i = 0; i < error_buff->len; i++) {
|
|
pr_cont("%02x", (int)error_buff->buff[i]);
|
|
if (i % 8 == 7)
|
|
pr_cont(" ");
|
|
}
|
|
pr_cont("\n");
|
|
|
|
dma_unmap_single(dev, error_buff->dma, error_buff->len,
|
|
DMA_FROM_DEVICE);
|
|
kfree(error_buff->buff);
|
|
kfree(error_buff);
|
|
}
|
|
|
|
static void handle_dump_size_rsp(union ibmvnic_crq *crq,
|
|
struct ibmvnic_adapter *adapter)
|
|
{
|
|
int len = be32_to_cpu(crq->request_dump_size_rsp.len);
|
|
struct ibmvnic_inflight_cmd *inflight_cmd;
|
|
struct device *dev = &adapter->vdev->dev;
|
|
union ibmvnic_crq newcrq;
|
|
unsigned long flags;
|
|
|
|
/* allocate and map buffer */
|
|
adapter->dump_data = kmalloc(len, GFP_KERNEL);
|
|
if (!adapter->dump_data) {
|
|
complete(&adapter->fw_done);
|
|
return;
|
|
}
|
|
|
|
adapter->dump_data_token = dma_map_single(dev, adapter->dump_data, len,
|
|
DMA_FROM_DEVICE);
|
|
|
|
if (dma_mapping_error(dev, adapter->dump_data_token)) {
|
|
if (!firmware_has_feature(FW_FEATURE_CMO))
|
|
dev_err(dev, "Couldn't map dump data\n");
|
|
kfree(adapter->dump_data);
|
|
complete(&adapter->fw_done);
|
|
return;
|
|
}
|
|
|
|
inflight_cmd = kmalloc(sizeof(*inflight_cmd), GFP_ATOMIC);
|
|
if (!inflight_cmd) {
|
|
dma_unmap_single(dev, adapter->dump_data_token, len,
|
|
DMA_FROM_DEVICE);
|
|
kfree(adapter->dump_data);
|
|
complete(&adapter->fw_done);
|
|
return;
|
|
}
|
|
|
|
memset(&newcrq, 0, sizeof(newcrq));
|
|
newcrq.request_dump.first = IBMVNIC_CRQ_CMD;
|
|
newcrq.request_dump.cmd = REQUEST_DUMP;
|
|
newcrq.request_dump.ioba = cpu_to_be32(adapter->dump_data_token);
|
|
newcrq.request_dump.len = cpu_to_be32(adapter->dump_data_size);
|
|
|
|
memcpy(&inflight_cmd->crq, &newcrq, sizeof(newcrq));
|
|
|
|
spin_lock_irqsave(&adapter->inflight_lock, flags);
|
|
list_add_tail(&inflight_cmd->list, &adapter->inflight);
|
|
spin_unlock_irqrestore(&adapter->inflight_lock, flags);
|
|
|
|
ibmvnic_send_crq(adapter, &newcrq);
|
|
}
|
|
|
|
static void handle_error_indication(union ibmvnic_crq *crq,
|
|
struct ibmvnic_adapter *adapter)
|
|
{
|
|
int detail_len = be32_to_cpu(crq->error_indication.detail_error_sz);
|
|
struct ibmvnic_inflight_cmd *inflight_cmd;
|
|
struct device *dev = &adapter->vdev->dev;
|
|
struct ibmvnic_error_buff *error_buff;
|
|
union ibmvnic_crq new_crq;
|
|
unsigned long flags;
|
|
|
|
dev_err(dev, "Firmware reports %serror id %x, cause %d\n",
|
|
crq->error_indication.
|
|
flags & IBMVNIC_FATAL_ERROR ? "FATAL " : "",
|
|
crq->error_indication.error_id,
|
|
crq->error_indication.error_cause);
|
|
|
|
error_buff = kmalloc(sizeof(*error_buff), GFP_ATOMIC);
|
|
if (!error_buff)
|
|
return;
|
|
|
|
error_buff->buff = kmalloc(detail_len, GFP_ATOMIC);
|
|
if (!error_buff->buff) {
|
|
kfree(error_buff);
|
|
return;
|
|
}
|
|
|
|
error_buff->dma = dma_map_single(dev, error_buff->buff, detail_len,
|
|
DMA_FROM_DEVICE);
|
|
if (dma_mapping_error(dev, error_buff->dma)) {
|
|
if (!firmware_has_feature(FW_FEATURE_CMO))
|
|
dev_err(dev, "Couldn't map error buffer\n");
|
|
kfree(error_buff->buff);
|
|
kfree(error_buff);
|
|
return;
|
|
}
|
|
|
|
inflight_cmd = kmalloc(sizeof(*inflight_cmd), GFP_ATOMIC);
|
|
if (!inflight_cmd) {
|
|
dma_unmap_single(dev, error_buff->dma, detail_len,
|
|
DMA_FROM_DEVICE);
|
|
kfree(error_buff->buff);
|
|
kfree(error_buff);
|
|
return;
|
|
}
|
|
|
|
error_buff->len = detail_len;
|
|
error_buff->error_id = crq->error_indication.error_id;
|
|
|
|
spin_lock_irqsave(&adapter->error_list_lock, flags);
|
|
list_add_tail(&error_buff->list, &adapter->errors);
|
|
spin_unlock_irqrestore(&adapter->error_list_lock, flags);
|
|
|
|
memset(&new_crq, 0, sizeof(new_crq));
|
|
new_crq.request_error_info.first = IBMVNIC_CRQ_CMD;
|
|
new_crq.request_error_info.cmd = REQUEST_ERROR_INFO;
|
|
new_crq.request_error_info.ioba = cpu_to_be32(error_buff->dma);
|
|
new_crq.request_error_info.len = cpu_to_be32(detail_len);
|
|
new_crq.request_error_info.error_id = crq->error_indication.error_id;
|
|
|
|
memcpy(&inflight_cmd->crq, &crq, sizeof(crq));
|
|
|
|
spin_lock_irqsave(&adapter->inflight_lock, flags);
|
|
list_add_tail(&inflight_cmd->list, &adapter->inflight);
|
|
spin_unlock_irqrestore(&adapter->inflight_lock, flags);
|
|
|
|
ibmvnic_send_crq(adapter, &new_crq);
|
|
}
|
|
|
|
static void handle_change_mac_rsp(union ibmvnic_crq *crq,
|
|
struct ibmvnic_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct device *dev = &adapter->vdev->dev;
|
|
long rc;
|
|
|
|
rc = crq->change_mac_addr_rsp.rc.code;
|
|
if (rc) {
|
|
dev_err(dev, "Error %ld in CHANGE_MAC_ADDR_RSP\n", rc);
|
|
return;
|
|
}
|
|
memcpy(netdev->dev_addr, &crq->change_mac_addr_rsp.mac_addr[0],
|
|
ETH_ALEN);
|
|
}
|
|
|
|
static void handle_request_cap_rsp(union ibmvnic_crq *crq,
|
|
struct ibmvnic_adapter *adapter)
|
|
{
|
|
struct device *dev = &adapter->vdev->dev;
|
|
u64 *req_value;
|
|
char *name;
|
|
|
|
switch (be16_to_cpu(crq->request_capability_rsp.capability)) {
|
|
case REQ_TX_QUEUES:
|
|
req_value = &adapter->req_tx_queues;
|
|
name = "tx";
|
|
break;
|
|
case REQ_RX_QUEUES:
|
|
req_value = &adapter->req_rx_queues;
|
|
name = "rx";
|
|
break;
|
|
case REQ_RX_ADD_QUEUES:
|
|
req_value = &adapter->req_rx_add_queues;
|
|
name = "rx_add";
|
|
break;
|
|
case REQ_TX_ENTRIES_PER_SUBCRQ:
|
|
req_value = &adapter->req_tx_entries_per_subcrq;
|
|
name = "tx_entries_per_subcrq";
|
|
break;
|
|
case REQ_RX_ADD_ENTRIES_PER_SUBCRQ:
|
|
req_value = &adapter->req_rx_add_entries_per_subcrq;
|
|
name = "rx_add_entries_per_subcrq";
|
|
break;
|
|
case REQ_MTU:
|
|
req_value = &adapter->req_mtu;
|
|
name = "mtu";
|
|
break;
|
|
case PROMISC_REQUESTED:
|
|
req_value = &adapter->promisc;
|
|
name = "promisc";
|
|
break;
|
|
default:
|
|
dev_err(dev, "Got invalid cap request rsp %d\n",
|
|
crq->request_capability.capability);
|
|
return;
|
|
}
|
|
|
|
switch (crq->request_capability_rsp.rc.code) {
|
|
case SUCCESS:
|
|
break;
|
|
case PARTIALSUCCESS:
|
|
dev_info(dev, "req=%lld, rsp=%ld in %s queue, retrying.\n",
|
|
*req_value,
|
|
(long int)be32_to_cpu(crq->request_capability_rsp.
|
|
number), name);
|
|
release_sub_crqs_no_irqs(adapter);
|
|
*req_value = be32_to_cpu(crq->request_capability_rsp.number);
|
|
init_sub_crqs(adapter, 1);
|
|
return;
|
|
default:
|
|
dev_err(dev, "Error %d in request cap rsp\n",
|
|
crq->request_capability_rsp.rc.code);
|
|
return;
|
|
}
|
|
|
|
/* Done receiving requested capabilities, query IP offload support */
|
|
if (++adapter->requested_caps == 7) {
|
|
union ibmvnic_crq newcrq;
|
|
int buf_sz = sizeof(struct ibmvnic_query_ip_offload_buffer);
|
|
struct ibmvnic_query_ip_offload_buffer *ip_offload_buf =
|
|
&adapter->ip_offload_buf;
|
|
|
|
adapter->ip_offload_tok = dma_map_single(dev, ip_offload_buf,
|
|
buf_sz,
|
|
DMA_FROM_DEVICE);
|
|
|
|
if (dma_mapping_error(dev, adapter->ip_offload_tok)) {
|
|
if (!firmware_has_feature(FW_FEATURE_CMO))
|
|
dev_err(dev, "Couldn't map offload buffer\n");
|
|
return;
|
|
}
|
|
|
|
memset(&newcrq, 0, sizeof(newcrq));
|
|
newcrq.query_ip_offload.first = IBMVNIC_CRQ_CMD;
|
|
newcrq.query_ip_offload.cmd = QUERY_IP_OFFLOAD;
|
|
newcrq.query_ip_offload.len = cpu_to_be32(buf_sz);
|
|
newcrq.query_ip_offload.ioba =
|
|
cpu_to_be32(adapter->ip_offload_tok);
|
|
|
|
ibmvnic_send_crq(adapter, &newcrq);
|
|
}
|
|
}
|
|
|
|
static int handle_login_rsp(union ibmvnic_crq *login_rsp_crq,
|
|
struct ibmvnic_adapter *adapter)
|
|
{
|
|
struct device *dev = &adapter->vdev->dev;
|
|
struct ibmvnic_login_rsp_buffer *login_rsp = adapter->login_rsp_buf;
|
|
struct ibmvnic_login_buffer *login = adapter->login_buf;
|
|
union ibmvnic_crq crq;
|
|
int i;
|
|
|
|
dma_unmap_single(dev, adapter->login_buf_token, adapter->login_buf_sz,
|
|
DMA_BIDIRECTIONAL);
|
|
dma_unmap_single(dev, adapter->login_rsp_buf_token,
|
|
adapter->login_rsp_buf_sz, DMA_BIDIRECTIONAL);
|
|
|
|
/* If the number of queues requested can't be allocated by the
|
|
* server, the login response will return with code 1. We will need
|
|
* to resend the login buffer with fewer queues requested.
|
|
*/
|
|
if (login_rsp_crq->generic.rc.code) {
|
|
adapter->renegotiate = true;
|
|
complete(&adapter->init_done);
|
|
return 0;
|
|
}
|
|
|
|
netdev_dbg(adapter->netdev, "Login Response Buffer:\n");
|
|
for (i = 0; i < (adapter->login_rsp_buf_sz - 1) / 8 + 1; i++) {
|
|
netdev_dbg(adapter->netdev, "%016lx\n",
|
|
((unsigned long int *)(adapter->login_rsp_buf))[i]);
|
|
}
|
|
|
|
/* Sanity checks */
|
|
if (login->num_txcomp_subcrqs != login_rsp->num_txsubm_subcrqs ||
|
|
(be32_to_cpu(login->num_rxcomp_subcrqs) *
|
|
adapter->req_rx_add_queues !=
|
|
be32_to_cpu(login_rsp->num_rxadd_subcrqs))) {
|
|
dev_err(dev, "FATAL: Inconsistent login and login rsp\n");
|
|
ibmvnic_remove(adapter->vdev);
|
|
return -EIO;
|
|
}
|
|
complete(&adapter->init_done);
|
|
|
|
memset(&crq, 0, sizeof(crq));
|
|
crq.request_ras_comp_num.first = IBMVNIC_CRQ_CMD;
|
|
crq.request_ras_comp_num.cmd = REQUEST_RAS_COMP_NUM;
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void handle_request_map_rsp(union ibmvnic_crq *crq,
|
|
struct ibmvnic_adapter *adapter)
|
|
{
|
|
struct device *dev = &adapter->vdev->dev;
|
|
u8 map_id = crq->request_map_rsp.map_id;
|
|
int tx_subcrqs;
|
|
int rx_subcrqs;
|
|
long rc;
|
|
int i;
|
|
|
|
tx_subcrqs = be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs);
|
|
rx_subcrqs = be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
|
|
|
|
rc = crq->request_map_rsp.rc.code;
|
|
if (rc) {
|
|
dev_err(dev, "Error %ld in REQUEST_MAP_RSP\n", rc);
|
|
adapter->map_id--;
|
|
/* need to find and zero tx/rx_pool map_id */
|
|
for (i = 0; i < tx_subcrqs; i++) {
|
|
if (adapter->tx_pool[i].long_term_buff.map_id == map_id)
|
|
adapter->tx_pool[i].long_term_buff.map_id = 0;
|
|
}
|
|
for (i = 0; i < rx_subcrqs; i++) {
|
|
if (adapter->rx_pool[i].long_term_buff.map_id == map_id)
|
|
adapter->rx_pool[i].long_term_buff.map_id = 0;
|
|
}
|
|
}
|
|
complete(&adapter->fw_done);
|
|
}
|
|
|
|
static void handle_request_unmap_rsp(union ibmvnic_crq *crq,
|
|
struct ibmvnic_adapter *adapter)
|
|
{
|
|
struct device *dev = &adapter->vdev->dev;
|
|
long rc;
|
|
|
|
rc = crq->request_unmap_rsp.rc.code;
|
|
if (rc)
|
|
dev_err(dev, "Error %ld in REQUEST_UNMAP_RSP\n", rc);
|
|
}
|
|
|
|
static void handle_query_map_rsp(union ibmvnic_crq *crq,
|
|
struct ibmvnic_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct device *dev = &adapter->vdev->dev;
|
|
long rc;
|
|
|
|
rc = crq->query_map_rsp.rc.code;
|
|
if (rc) {
|
|
dev_err(dev, "Error %ld in QUERY_MAP_RSP\n", rc);
|
|
return;
|
|
}
|
|
netdev_dbg(netdev, "page_size = %d\ntot_pages = %d\nfree_pages = %d\n",
|
|
crq->query_map_rsp.page_size, crq->query_map_rsp.tot_pages,
|
|
crq->query_map_rsp.free_pages);
|
|
}
|
|
|
|
static void handle_query_cap_rsp(union ibmvnic_crq *crq,
|
|
struct ibmvnic_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct device *dev = &adapter->vdev->dev;
|
|
long rc;
|
|
|
|
atomic_dec(&adapter->running_cap_queries);
|
|
netdev_dbg(netdev, "Outstanding queries: %d\n",
|
|
atomic_read(&adapter->running_cap_queries));
|
|
rc = crq->query_capability.rc.code;
|
|
if (rc) {
|
|
dev_err(dev, "Error %ld in QUERY_CAP_RSP\n", rc);
|
|
goto out;
|
|
}
|
|
|
|
switch (be16_to_cpu(crq->query_capability.capability)) {
|
|
case MIN_TX_QUEUES:
|
|
adapter->min_tx_queues =
|
|
be64_to_cpu(crq->query_capability.number);
|
|
netdev_dbg(netdev, "min_tx_queues = %lld\n",
|
|
adapter->min_tx_queues);
|
|
break;
|
|
case MIN_RX_QUEUES:
|
|
adapter->min_rx_queues =
|
|
be64_to_cpu(crq->query_capability.number);
|
|
netdev_dbg(netdev, "min_rx_queues = %lld\n",
|
|
adapter->min_rx_queues);
|
|
break;
|
|
case MIN_RX_ADD_QUEUES:
|
|
adapter->min_rx_add_queues =
|
|
be64_to_cpu(crq->query_capability.number);
|
|
netdev_dbg(netdev, "min_rx_add_queues = %lld\n",
|
|
adapter->min_rx_add_queues);
|
|
break;
|
|
case MAX_TX_QUEUES:
|
|
adapter->max_tx_queues =
|
|
be64_to_cpu(crq->query_capability.number);
|
|
netdev_dbg(netdev, "max_tx_queues = %lld\n",
|
|
adapter->max_tx_queues);
|
|
break;
|
|
case MAX_RX_QUEUES:
|
|
adapter->max_rx_queues =
|
|
be64_to_cpu(crq->query_capability.number);
|
|
netdev_dbg(netdev, "max_rx_queues = %lld\n",
|
|
adapter->max_rx_queues);
|
|
break;
|
|
case MAX_RX_ADD_QUEUES:
|
|
adapter->max_rx_add_queues =
|
|
be64_to_cpu(crq->query_capability.number);
|
|
netdev_dbg(netdev, "max_rx_add_queues = %lld\n",
|
|
adapter->max_rx_add_queues);
|
|
break;
|
|
case MIN_TX_ENTRIES_PER_SUBCRQ:
|
|
adapter->min_tx_entries_per_subcrq =
|
|
be64_to_cpu(crq->query_capability.number);
|
|
netdev_dbg(netdev, "min_tx_entries_per_subcrq = %lld\n",
|
|
adapter->min_tx_entries_per_subcrq);
|
|
break;
|
|
case MIN_RX_ADD_ENTRIES_PER_SUBCRQ:
|
|
adapter->min_rx_add_entries_per_subcrq =
|
|
be64_to_cpu(crq->query_capability.number);
|
|
netdev_dbg(netdev, "min_rx_add_entrs_per_subcrq = %lld\n",
|
|
adapter->min_rx_add_entries_per_subcrq);
|
|
break;
|
|
case MAX_TX_ENTRIES_PER_SUBCRQ:
|
|
adapter->max_tx_entries_per_subcrq =
|
|
be64_to_cpu(crq->query_capability.number);
|
|
netdev_dbg(netdev, "max_tx_entries_per_subcrq = %lld\n",
|
|
adapter->max_tx_entries_per_subcrq);
|
|
break;
|
|
case MAX_RX_ADD_ENTRIES_PER_SUBCRQ:
|
|
adapter->max_rx_add_entries_per_subcrq =
|
|
be64_to_cpu(crq->query_capability.number);
|
|
netdev_dbg(netdev, "max_rx_add_entrs_per_subcrq = %lld\n",
|
|
adapter->max_rx_add_entries_per_subcrq);
|
|
break;
|
|
case TCP_IP_OFFLOAD:
|
|
adapter->tcp_ip_offload =
|
|
be64_to_cpu(crq->query_capability.number);
|
|
netdev_dbg(netdev, "tcp_ip_offload = %lld\n",
|
|
adapter->tcp_ip_offload);
|
|
break;
|
|
case PROMISC_SUPPORTED:
|
|
adapter->promisc_supported =
|
|
be64_to_cpu(crq->query_capability.number);
|
|
netdev_dbg(netdev, "promisc_supported = %lld\n",
|
|
adapter->promisc_supported);
|
|
break;
|
|
case MIN_MTU:
|
|
adapter->min_mtu = be64_to_cpu(crq->query_capability.number);
|
|
netdev_dbg(netdev, "min_mtu = %lld\n", adapter->min_mtu);
|
|
break;
|
|
case MAX_MTU:
|
|
adapter->max_mtu = be64_to_cpu(crq->query_capability.number);
|
|
netdev_dbg(netdev, "max_mtu = %lld\n", adapter->max_mtu);
|
|
break;
|
|
case MAX_MULTICAST_FILTERS:
|
|
adapter->max_multicast_filters =
|
|
be64_to_cpu(crq->query_capability.number);
|
|
netdev_dbg(netdev, "max_multicast_filters = %lld\n",
|
|
adapter->max_multicast_filters);
|
|
break;
|
|
case VLAN_HEADER_INSERTION:
|
|
adapter->vlan_header_insertion =
|
|
be64_to_cpu(crq->query_capability.number);
|
|
if (adapter->vlan_header_insertion)
|
|
netdev->features |= NETIF_F_HW_VLAN_STAG_TX;
|
|
netdev_dbg(netdev, "vlan_header_insertion = %lld\n",
|
|
adapter->vlan_header_insertion);
|
|
break;
|
|
case MAX_TX_SG_ENTRIES:
|
|
adapter->max_tx_sg_entries =
|
|
be64_to_cpu(crq->query_capability.number);
|
|
netdev_dbg(netdev, "max_tx_sg_entries = %lld\n",
|
|
adapter->max_tx_sg_entries);
|
|
break;
|
|
case RX_SG_SUPPORTED:
|
|
adapter->rx_sg_supported =
|
|
be64_to_cpu(crq->query_capability.number);
|
|
netdev_dbg(netdev, "rx_sg_supported = %lld\n",
|
|
adapter->rx_sg_supported);
|
|
break;
|
|
case OPT_TX_COMP_SUB_QUEUES:
|
|
adapter->opt_tx_comp_sub_queues =
|
|
be64_to_cpu(crq->query_capability.number);
|
|
netdev_dbg(netdev, "opt_tx_comp_sub_queues = %lld\n",
|
|
adapter->opt_tx_comp_sub_queues);
|
|
break;
|
|
case OPT_RX_COMP_QUEUES:
|
|
adapter->opt_rx_comp_queues =
|
|
be64_to_cpu(crq->query_capability.number);
|
|
netdev_dbg(netdev, "opt_rx_comp_queues = %lld\n",
|
|
adapter->opt_rx_comp_queues);
|
|
break;
|
|
case OPT_RX_BUFADD_Q_PER_RX_COMP_Q:
|
|
adapter->opt_rx_bufadd_q_per_rx_comp_q =
|
|
be64_to_cpu(crq->query_capability.number);
|
|
netdev_dbg(netdev, "opt_rx_bufadd_q_per_rx_comp_q = %lld\n",
|
|
adapter->opt_rx_bufadd_q_per_rx_comp_q);
|
|
break;
|
|
case OPT_TX_ENTRIES_PER_SUBCRQ:
|
|
adapter->opt_tx_entries_per_subcrq =
|
|
be64_to_cpu(crq->query_capability.number);
|
|
netdev_dbg(netdev, "opt_tx_entries_per_subcrq = %lld\n",
|
|
adapter->opt_tx_entries_per_subcrq);
|
|
break;
|
|
case OPT_RXBA_ENTRIES_PER_SUBCRQ:
|
|
adapter->opt_rxba_entries_per_subcrq =
|
|
be64_to_cpu(crq->query_capability.number);
|
|
netdev_dbg(netdev, "opt_rxba_entries_per_subcrq = %lld\n",
|
|
adapter->opt_rxba_entries_per_subcrq);
|
|
break;
|
|
case TX_RX_DESC_REQ:
|
|
adapter->tx_rx_desc_req = crq->query_capability.number;
|
|
netdev_dbg(netdev, "tx_rx_desc_req = %llx\n",
|
|
adapter->tx_rx_desc_req);
|
|
break;
|
|
|
|
default:
|
|
netdev_err(netdev, "Got invalid cap rsp %d\n",
|
|
crq->query_capability.capability);
|
|
}
|
|
|
|
out:
|
|
if (atomic_read(&adapter->running_cap_queries) == 0)
|
|
init_sub_crqs(adapter, 0);
|
|
/* We're done querying the capabilities, initialize sub-crqs */
|
|
}
|
|
|
|
static void handle_control_ras_rsp(union ibmvnic_crq *crq,
|
|
struct ibmvnic_adapter *adapter)
|
|
{
|
|
u8 correlator = crq->control_ras_rsp.correlator;
|
|
struct device *dev = &adapter->vdev->dev;
|
|
bool found = false;
|
|
int i;
|
|
|
|
if (crq->control_ras_rsp.rc.code) {
|
|
dev_warn(dev, "Control ras failed rc=%d\n",
|
|
crq->control_ras_rsp.rc.code);
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < adapter->ras_comp_num; i++) {
|
|
if (adapter->ras_comps[i].correlator == correlator) {
|
|
found = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!found) {
|
|
dev_warn(dev, "Correlator not found on control_ras_rsp\n");
|
|
return;
|
|
}
|
|
|
|
switch (crq->control_ras_rsp.op) {
|
|
case IBMVNIC_TRACE_LEVEL:
|
|
adapter->ras_comps[i].trace_level = crq->control_ras.level;
|
|
break;
|
|
case IBMVNIC_ERROR_LEVEL:
|
|
adapter->ras_comps[i].error_check_level =
|
|
crq->control_ras.level;
|
|
break;
|
|
case IBMVNIC_TRACE_PAUSE:
|
|
adapter->ras_comp_int[i].paused = 1;
|
|
break;
|
|
case IBMVNIC_TRACE_RESUME:
|
|
adapter->ras_comp_int[i].paused = 0;
|
|
break;
|
|
case IBMVNIC_TRACE_ON:
|
|
adapter->ras_comps[i].trace_on = 1;
|
|
break;
|
|
case IBMVNIC_TRACE_OFF:
|
|
adapter->ras_comps[i].trace_on = 0;
|
|
break;
|
|
case IBMVNIC_CHG_TRACE_BUFF_SZ:
|
|
/* trace_buff_sz is 3 bytes, stuff it into an int */
|
|
((u8 *)(&adapter->ras_comps[i].trace_buff_size))[0] = 0;
|
|
((u8 *)(&adapter->ras_comps[i].trace_buff_size))[1] =
|
|
crq->control_ras_rsp.trace_buff_sz[0];
|
|
((u8 *)(&adapter->ras_comps[i].trace_buff_size))[2] =
|
|
crq->control_ras_rsp.trace_buff_sz[1];
|
|
((u8 *)(&adapter->ras_comps[i].trace_buff_size))[3] =
|
|
crq->control_ras_rsp.trace_buff_sz[2];
|
|
break;
|
|
default:
|
|
dev_err(dev, "invalid op %d on control_ras_rsp",
|
|
crq->control_ras_rsp.op);
|
|
}
|
|
}
|
|
|
|
static int ibmvnic_fw_comp_open(struct inode *inode, struct file *file)
|
|
{
|
|
file->private_data = inode->i_private;
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t trace_read(struct file *file, char __user *user_buf, size_t len,
|
|
loff_t *ppos)
|
|
{
|
|
struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
|
|
struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
|
|
struct device *dev = &adapter->vdev->dev;
|
|
struct ibmvnic_fw_trace_entry *trace;
|
|
int num = ras_comp_int->num;
|
|
union ibmvnic_crq crq;
|
|
dma_addr_t trace_tok;
|
|
|
|
if (*ppos >= be32_to_cpu(adapter->ras_comps[num].trace_buff_size))
|
|
return 0;
|
|
|
|
trace =
|
|
dma_alloc_coherent(dev,
|
|
be32_to_cpu(adapter->ras_comps[num].
|
|
trace_buff_size), &trace_tok,
|
|
GFP_KERNEL);
|
|
if (!trace) {
|
|
dev_err(dev, "Couldn't alloc trace buffer\n");
|
|
return 0;
|
|
}
|
|
|
|
memset(&crq, 0, sizeof(crq));
|
|
crq.collect_fw_trace.first = IBMVNIC_CRQ_CMD;
|
|
crq.collect_fw_trace.cmd = COLLECT_FW_TRACE;
|
|
crq.collect_fw_trace.correlator = adapter->ras_comps[num].correlator;
|
|
crq.collect_fw_trace.ioba = cpu_to_be32(trace_tok);
|
|
crq.collect_fw_trace.len = adapter->ras_comps[num].trace_buff_size;
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
init_completion(&adapter->fw_done);
|
|
wait_for_completion(&adapter->fw_done);
|
|
|
|
if (*ppos + len > be32_to_cpu(adapter->ras_comps[num].trace_buff_size))
|
|
len =
|
|
be32_to_cpu(adapter->ras_comps[num].trace_buff_size) -
|
|
*ppos;
|
|
|
|
copy_to_user(user_buf, &((u8 *)trace)[*ppos], len);
|
|
|
|
dma_free_coherent(dev,
|
|
be32_to_cpu(adapter->ras_comps[num].trace_buff_size),
|
|
trace, trace_tok);
|
|
*ppos += len;
|
|
return len;
|
|
}
|
|
|
|
static const struct file_operations trace_ops = {
|
|
.owner = THIS_MODULE,
|
|
.open = ibmvnic_fw_comp_open,
|
|
.read = trace_read,
|
|
};
|
|
|
|
static ssize_t paused_read(struct file *file, char __user *user_buf, size_t len,
|
|
loff_t *ppos)
|
|
{
|
|
struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
|
|
struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
|
|
int num = ras_comp_int->num;
|
|
char buff[5]; /* 1 or 0 plus \n and \0 */
|
|
int size;
|
|
|
|
size = sprintf(buff, "%d\n", adapter->ras_comp_int[num].paused);
|
|
|
|
if (*ppos >= size)
|
|
return 0;
|
|
|
|
copy_to_user(user_buf, buff, size);
|
|
*ppos += size;
|
|
return size;
|
|
}
|
|
|
|
static ssize_t paused_write(struct file *file, const char __user *user_buf,
|
|
size_t len, loff_t *ppos)
|
|
{
|
|
struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
|
|
struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
|
|
int num = ras_comp_int->num;
|
|
union ibmvnic_crq crq;
|
|
unsigned long val;
|
|
char buff[9]; /* decimal max int plus \n and \0 */
|
|
|
|
copy_from_user(buff, user_buf, sizeof(buff));
|
|
val = kstrtoul(buff, 10, NULL);
|
|
|
|
adapter->ras_comp_int[num].paused = val ? 1 : 0;
|
|
|
|
memset(&crq, 0, sizeof(crq));
|
|
crq.control_ras.first = IBMVNIC_CRQ_CMD;
|
|
crq.control_ras.cmd = CONTROL_RAS;
|
|
crq.control_ras.correlator = adapter->ras_comps[num].correlator;
|
|
crq.control_ras.op = val ? IBMVNIC_TRACE_PAUSE : IBMVNIC_TRACE_RESUME;
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
return len;
|
|
}
|
|
|
|
static const struct file_operations paused_ops = {
|
|
.owner = THIS_MODULE,
|
|
.open = ibmvnic_fw_comp_open,
|
|
.read = paused_read,
|
|
.write = paused_write,
|
|
};
|
|
|
|
static ssize_t tracing_read(struct file *file, char __user *user_buf,
|
|
size_t len, loff_t *ppos)
|
|
{
|
|
struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
|
|
struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
|
|
int num = ras_comp_int->num;
|
|
char buff[5]; /* 1 or 0 plus \n and \0 */
|
|
int size;
|
|
|
|
size = sprintf(buff, "%d\n", adapter->ras_comps[num].trace_on);
|
|
|
|
if (*ppos >= size)
|
|
return 0;
|
|
|
|
copy_to_user(user_buf, buff, size);
|
|
*ppos += size;
|
|
return size;
|
|
}
|
|
|
|
static ssize_t tracing_write(struct file *file, const char __user *user_buf,
|
|
size_t len, loff_t *ppos)
|
|
{
|
|
struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
|
|
struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
|
|
int num = ras_comp_int->num;
|
|
union ibmvnic_crq crq;
|
|
unsigned long val;
|
|
char buff[9]; /* decimal max int plus \n and \0 */
|
|
|
|
copy_from_user(buff, user_buf, sizeof(buff));
|
|
val = kstrtoul(buff, 10, NULL);
|
|
|
|
memset(&crq, 0, sizeof(crq));
|
|
crq.control_ras.first = IBMVNIC_CRQ_CMD;
|
|
crq.control_ras.cmd = CONTROL_RAS;
|
|
crq.control_ras.correlator = adapter->ras_comps[num].correlator;
|
|
crq.control_ras.op = val ? IBMVNIC_TRACE_ON : IBMVNIC_TRACE_OFF;
|
|
|
|
return len;
|
|
}
|
|
|
|
static const struct file_operations tracing_ops = {
|
|
.owner = THIS_MODULE,
|
|
.open = ibmvnic_fw_comp_open,
|
|
.read = tracing_read,
|
|
.write = tracing_write,
|
|
};
|
|
|
|
static ssize_t error_level_read(struct file *file, char __user *user_buf,
|
|
size_t len, loff_t *ppos)
|
|
{
|
|
struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
|
|
struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
|
|
int num = ras_comp_int->num;
|
|
char buff[5]; /* decimal max char plus \n and \0 */
|
|
int size;
|
|
|
|
size = sprintf(buff, "%d\n", adapter->ras_comps[num].error_check_level);
|
|
|
|
if (*ppos >= size)
|
|
return 0;
|
|
|
|
copy_to_user(user_buf, buff, size);
|
|
*ppos += size;
|
|
return size;
|
|
}
|
|
|
|
static ssize_t error_level_write(struct file *file, const char __user *user_buf,
|
|
size_t len, loff_t *ppos)
|
|
{
|
|
struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
|
|
struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
|
|
int num = ras_comp_int->num;
|
|
union ibmvnic_crq crq;
|
|
unsigned long val;
|
|
char buff[9]; /* decimal max int plus \n and \0 */
|
|
|
|
copy_from_user(buff, user_buf, sizeof(buff));
|
|
val = kstrtoul(buff, 10, NULL);
|
|
|
|
if (val > 9)
|
|
val = 9;
|
|
|
|
memset(&crq, 0, sizeof(crq));
|
|
crq.control_ras.first = IBMVNIC_CRQ_CMD;
|
|
crq.control_ras.cmd = CONTROL_RAS;
|
|
crq.control_ras.correlator = adapter->ras_comps[num].correlator;
|
|
crq.control_ras.op = IBMVNIC_ERROR_LEVEL;
|
|
crq.control_ras.level = val;
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
return len;
|
|
}
|
|
|
|
static const struct file_operations error_level_ops = {
|
|
.owner = THIS_MODULE,
|
|
.open = ibmvnic_fw_comp_open,
|
|
.read = error_level_read,
|
|
.write = error_level_write,
|
|
};
|
|
|
|
static ssize_t trace_level_read(struct file *file, char __user *user_buf,
|
|
size_t len, loff_t *ppos)
|
|
{
|
|
struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
|
|
struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
|
|
int num = ras_comp_int->num;
|
|
char buff[5]; /* decimal max char plus \n and \0 */
|
|
int size;
|
|
|
|
size = sprintf(buff, "%d\n", adapter->ras_comps[num].trace_level);
|
|
if (*ppos >= size)
|
|
return 0;
|
|
|
|
copy_to_user(user_buf, buff, size);
|
|
*ppos += size;
|
|
return size;
|
|
}
|
|
|
|
static ssize_t trace_level_write(struct file *file, const char __user *user_buf,
|
|
size_t len, loff_t *ppos)
|
|
{
|
|
struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
|
|
struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
|
|
union ibmvnic_crq crq;
|
|
unsigned long val;
|
|
char buff[9]; /* decimal max int plus \n and \0 */
|
|
|
|
copy_from_user(buff, user_buf, sizeof(buff));
|
|
val = kstrtoul(buff, 10, NULL);
|
|
if (val > 9)
|
|
val = 9;
|
|
|
|
memset(&crq, 0, sizeof(crq));
|
|
crq.control_ras.first = IBMVNIC_CRQ_CMD;
|
|
crq.control_ras.cmd = CONTROL_RAS;
|
|
crq.control_ras.correlator =
|
|
adapter->ras_comps[ras_comp_int->num].correlator;
|
|
crq.control_ras.op = IBMVNIC_TRACE_LEVEL;
|
|
crq.control_ras.level = val;
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
return len;
|
|
}
|
|
|
|
static const struct file_operations trace_level_ops = {
|
|
.owner = THIS_MODULE,
|
|
.open = ibmvnic_fw_comp_open,
|
|
.read = trace_level_read,
|
|
.write = trace_level_write,
|
|
};
|
|
|
|
static ssize_t trace_buff_size_read(struct file *file, char __user *user_buf,
|
|
size_t len, loff_t *ppos)
|
|
{
|
|
struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
|
|
struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
|
|
int num = ras_comp_int->num;
|
|
char buff[9]; /* decimal max int plus \n and \0 */
|
|
int size;
|
|
|
|
size = sprintf(buff, "%d\n", adapter->ras_comps[num].trace_buff_size);
|
|
if (*ppos >= size)
|
|
return 0;
|
|
|
|
copy_to_user(user_buf, buff, size);
|
|
*ppos += size;
|
|
return size;
|
|
}
|
|
|
|
static ssize_t trace_buff_size_write(struct file *file,
|
|
const char __user *user_buf, size_t len,
|
|
loff_t *ppos)
|
|
{
|
|
struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
|
|
struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
|
|
union ibmvnic_crq crq;
|
|
unsigned long val;
|
|
char buff[9]; /* decimal max int plus \n and \0 */
|
|
|
|
copy_from_user(buff, user_buf, sizeof(buff));
|
|
val = kstrtoul(buff, 10, NULL);
|
|
|
|
memset(&crq, 0, sizeof(crq));
|
|
crq.control_ras.first = IBMVNIC_CRQ_CMD;
|
|
crq.control_ras.cmd = CONTROL_RAS;
|
|
crq.control_ras.correlator =
|
|
adapter->ras_comps[ras_comp_int->num].correlator;
|
|
crq.control_ras.op = IBMVNIC_CHG_TRACE_BUFF_SZ;
|
|
/* trace_buff_sz is 3 bytes, stuff an int into it */
|
|
crq.control_ras.trace_buff_sz[0] = ((u8 *)(&val))[5];
|
|
crq.control_ras.trace_buff_sz[1] = ((u8 *)(&val))[6];
|
|
crq.control_ras.trace_buff_sz[2] = ((u8 *)(&val))[7];
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
return len;
|
|
}
|
|
|
|
static const struct file_operations trace_size_ops = {
|
|
.owner = THIS_MODULE,
|
|
.open = ibmvnic_fw_comp_open,
|
|
.read = trace_buff_size_read,
|
|
.write = trace_buff_size_write,
|
|
};
|
|
|
|
static void handle_request_ras_comps_rsp(union ibmvnic_crq *crq,
|
|
struct ibmvnic_adapter *adapter)
|
|
{
|
|
struct device *dev = &adapter->vdev->dev;
|
|
struct dentry *dir_ent;
|
|
struct dentry *ent;
|
|
int i;
|
|
|
|
debugfs_remove_recursive(adapter->ras_comps_ent);
|
|
|
|
adapter->ras_comps_ent = debugfs_create_dir("ras_comps",
|
|
adapter->debugfs_dir);
|
|
if (!adapter->ras_comps_ent || IS_ERR(adapter->ras_comps_ent)) {
|
|
dev_info(dev, "debugfs create ras_comps dir failed\n");
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < adapter->ras_comp_num; i++) {
|
|
dir_ent = debugfs_create_dir(adapter->ras_comps[i].name,
|
|
adapter->ras_comps_ent);
|
|
if (!dir_ent || IS_ERR(dir_ent)) {
|
|
dev_info(dev, "debugfs create %s dir failed\n",
|
|
adapter->ras_comps[i].name);
|
|
continue;
|
|
}
|
|
|
|
adapter->ras_comp_int[i].adapter = adapter;
|
|
adapter->ras_comp_int[i].num = i;
|
|
adapter->ras_comp_int[i].desc_blob.data =
|
|
&adapter->ras_comps[i].description;
|
|
adapter->ras_comp_int[i].desc_blob.size =
|
|
sizeof(adapter->ras_comps[i].description);
|
|
|
|
/* Don't need to remember the dentry's because the debugfs dir
|
|
* gets removed recursively
|
|
*/
|
|
ent = debugfs_create_blob("description", S_IRUGO, dir_ent,
|
|
&adapter->ras_comp_int[i].desc_blob);
|
|
ent = debugfs_create_file("trace_buf_size", S_IRUGO | S_IWUSR,
|
|
dir_ent, &adapter->ras_comp_int[i],
|
|
&trace_size_ops);
|
|
ent = debugfs_create_file("trace_level",
|
|
S_IRUGO |
|
|
(adapter->ras_comps[i].trace_level !=
|
|
0xFF ? S_IWUSR : 0),
|
|
dir_ent, &adapter->ras_comp_int[i],
|
|
&trace_level_ops);
|
|
ent = debugfs_create_file("error_level",
|
|
S_IRUGO |
|
|
(adapter->
|
|
ras_comps[i].error_check_level !=
|
|
0xFF ? S_IWUSR : 0),
|
|
dir_ent, &adapter->ras_comp_int[i],
|
|
&trace_level_ops);
|
|
ent = debugfs_create_file("tracing", S_IRUGO | S_IWUSR,
|
|
dir_ent, &adapter->ras_comp_int[i],
|
|
&tracing_ops);
|
|
ent = debugfs_create_file("paused", S_IRUGO | S_IWUSR,
|
|
dir_ent, &adapter->ras_comp_int[i],
|
|
&paused_ops);
|
|
ent = debugfs_create_file("trace", S_IRUGO, dir_ent,
|
|
&adapter->ras_comp_int[i],
|
|
&trace_ops);
|
|
}
|
|
}
|
|
|
|
static void handle_request_ras_comp_num_rsp(union ibmvnic_crq *crq,
|
|
struct ibmvnic_adapter *adapter)
|
|
{
|
|
int len = adapter->ras_comp_num * sizeof(struct ibmvnic_fw_component);
|
|
struct device *dev = &adapter->vdev->dev;
|
|
union ibmvnic_crq newcrq;
|
|
|
|
adapter->ras_comps = dma_alloc_coherent(dev, len,
|
|
&adapter->ras_comps_tok,
|
|
GFP_KERNEL);
|
|
if (!adapter->ras_comps) {
|
|
if (!firmware_has_feature(FW_FEATURE_CMO))
|
|
dev_err(dev, "Couldn't alloc fw comps buffer\n");
|
|
return;
|
|
}
|
|
|
|
adapter->ras_comp_int = kmalloc(adapter->ras_comp_num *
|
|
sizeof(struct ibmvnic_fw_comp_internal),
|
|
GFP_KERNEL);
|
|
if (!adapter->ras_comp_int)
|
|
dma_free_coherent(dev, len, adapter->ras_comps,
|
|
adapter->ras_comps_tok);
|
|
|
|
memset(&newcrq, 0, sizeof(newcrq));
|
|
newcrq.request_ras_comps.first = IBMVNIC_CRQ_CMD;
|
|
newcrq.request_ras_comps.cmd = REQUEST_RAS_COMPS;
|
|
newcrq.request_ras_comps.ioba = cpu_to_be32(adapter->ras_comps_tok);
|
|
newcrq.request_ras_comps.len = cpu_to_be32(len);
|
|
ibmvnic_send_crq(adapter, &newcrq);
|
|
}
|
|
|
|
static void ibmvnic_free_inflight(struct ibmvnic_adapter *adapter)
|
|
{
|
|
struct ibmvnic_inflight_cmd *inflight_cmd, *tmp1;
|
|
struct device *dev = &adapter->vdev->dev;
|
|
struct ibmvnic_error_buff *error_buff, *tmp2;
|
|
unsigned long flags;
|
|
unsigned long flags2;
|
|
|
|
spin_lock_irqsave(&adapter->inflight_lock, flags);
|
|
list_for_each_entry_safe(inflight_cmd, tmp1, &adapter->inflight, list) {
|
|
switch (inflight_cmd->crq.generic.cmd) {
|
|
case LOGIN:
|
|
dma_unmap_single(dev, adapter->login_buf_token,
|
|
adapter->login_buf_sz,
|
|
DMA_BIDIRECTIONAL);
|
|
dma_unmap_single(dev, adapter->login_rsp_buf_token,
|
|
adapter->login_rsp_buf_sz,
|
|
DMA_BIDIRECTIONAL);
|
|
kfree(adapter->login_rsp_buf);
|
|
kfree(adapter->login_buf);
|
|
break;
|
|
case REQUEST_DUMP:
|
|
complete(&adapter->fw_done);
|
|
break;
|
|
case REQUEST_ERROR_INFO:
|
|
spin_lock_irqsave(&adapter->error_list_lock, flags2);
|
|
list_for_each_entry_safe(error_buff, tmp2,
|
|
&adapter->errors, list) {
|
|
dma_unmap_single(dev, error_buff->dma,
|
|
error_buff->len,
|
|
DMA_FROM_DEVICE);
|
|
kfree(error_buff->buff);
|
|
list_del(&error_buff->list);
|
|
kfree(error_buff);
|
|
}
|
|
spin_unlock_irqrestore(&adapter->error_list_lock,
|
|
flags2);
|
|
break;
|
|
}
|
|
list_del(&inflight_cmd->list);
|
|
kfree(inflight_cmd);
|
|
}
|
|
spin_unlock_irqrestore(&adapter->inflight_lock, flags);
|
|
}
|
|
|
|
static void ibmvnic_handle_crq(union ibmvnic_crq *crq,
|
|
struct ibmvnic_adapter *adapter)
|
|
{
|
|
struct ibmvnic_generic_crq *gen_crq = &crq->generic;
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct device *dev = &adapter->vdev->dev;
|
|
long rc;
|
|
|
|
netdev_dbg(netdev, "Handling CRQ: %016lx %016lx\n",
|
|
((unsigned long int *)crq)[0],
|
|
((unsigned long int *)crq)[1]);
|
|
switch (gen_crq->first) {
|
|
case IBMVNIC_CRQ_INIT_RSP:
|
|
switch (gen_crq->cmd) {
|
|
case IBMVNIC_CRQ_INIT:
|
|
dev_info(dev, "Partner initialized\n");
|
|
/* Send back a response */
|
|
rc = ibmvnic_send_crq_init_complete(adapter);
|
|
if (!rc)
|
|
schedule_work(&adapter->vnic_crq_init);
|
|
else
|
|
dev_err(dev, "Can't send initrsp rc=%ld\n", rc);
|
|
break;
|
|
case IBMVNIC_CRQ_INIT_COMPLETE:
|
|
dev_info(dev, "Partner initialization complete\n");
|
|
send_version_xchg(adapter);
|
|
break;
|
|
default:
|
|
dev_err(dev, "Unknown crq cmd: %d\n", gen_crq->cmd);
|
|
}
|
|
return;
|
|
case IBMVNIC_CRQ_XPORT_EVENT:
|
|
if (gen_crq->cmd == IBMVNIC_PARTITION_MIGRATED) {
|
|
dev_info(dev, "Re-enabling adapter\n");
|
|
adapter->migrated = true;
|
|
ibmvnic_free_inflight(adapter);
|
|
release_sub_crqs(adapter);
|
|
rc = ibmvnic_reenable_crq_queue(adapter);
|
|
if (rc)
|
|
dev_err(dev, "Error after enable rc=%ld\n", rc);
|
|
adapter->migrated = false;
|
|
rc = ibmvnic_send_crq_init(adapter);
|
|
if (rc)
|
|
dev_err(dev, "Error sending init rc=%ld\n", rc);
|
|
} else {
|
|
/* The adapter lost the connection */
|
|
dev_err(dev, "Virtual Adapter failed (rc=%d)\n",
|
|
gen_crq->cmd);
|
|
ibmvnic_free_inflight(adapter);
|
|
release_sub_crqs(adapter);
|
|
}
|
|
return;
|
|
case IBMVNIC_CRQ_CMD_RSP:
|
|
break;
|
|
default:
|
|
dev_err(dev, "Got an invalid msg type 0x%02x\n",
|
|
gen_crq->first);
|
|
return;
|
|
}
|
|
|
|
switch (gen_crq->cmd) {
|
|
case VERSION_EXCHANGE_RSP:
|
|
rc = crq->version_exchange_rsp.rc.code;
|
|
if (rc) {
|
|
dev_err(dev, "Error %ld in VERSION_EXCHG_RSP\n", rc);
|
|
break;
|
|
}
|
|
dev_info(dev, "Partner protocol version is %d\n",
|
|
crq->version_exchange_rsp.version);
|
|
if (be16_to_cpu(crq->version_exchange_rsp.version) <
|
|
ibmvnic_version)
|
|
ibmvnic_version =
|
|
be16_to_cpu(crq->version_exchange_rsp.version);
|
|
send_cap_queries(adapter);
|
|
break;
|
|
case QUERY_CAPABILITY_RSP:
|
|
handle_query_cap_rsp(crq, adapter);
|
|
break;
|
|
case QUERY_MAP_RSP:
|
|
handle_query_map_rsp(crq, adapter);
|
|
break;
|
|
case REQUEST_MAP_RSP:
|
|
handle_request_map_rsp(crq, adapter);
|
|
break;
|
|
case REQUEST_UNMAP_RSP:
|
|
handle_request_unmap_rsp(crq, adapter);
|
|
break;
|
|
case REQUEST_CAPABILITY_RSP:
|
|
handle_request_cap_rsp(crq, adapter);
|
|
break;
|
|
case LOGIN_RSP:
|
|
netdev_dbg(netdev, "Got Login Response\n");
|
|
handle_login_rsp(crq, adapter);
|
|
break;
|
|
case LOGICAL_LINK_STATE_RSP:
|
|
netdev_dbg(netdev, "Got Logical Link State Response\n");
|
|
adapter->logical_link_state =
|
|
crq->logical_link_state_rsp.link_state;
|
|
break;
|
|
case LINK_STATE_INDICATION:
|
|
netdev_dbg(netdev, "Got Logical Link State Indication\n");
|
|
adapter->phys_link_state =
|
|
crq->link_state_indication.phys_link_state;
|
|
adapter->logical_link_state =
|
|
crq->link_state_indication.logical_link_state;
|
|
break;
|
|
case CHANGE_MAC_ADDR_RSP:
|
|
netdev_dbg(netdev, "Got MAC address change Response\n");
|
|
handle_change_mac_rsp(crq, adapter);
|
|
break;
|
|
case ERROR_INDICATION:
|
|
netdev_dbg(netdev, "Got Error Indication\n");
|
|
handle_error_indication(crq, adapter);
|
|
break;
|
|
case REQUEST_ERROR_RSP:
|
|
netdev_dbg(netdev, "Got Error Detail Response\n");
|
|
handle_error_info_rsp(crq, adapter);
|
|
break;
|
|
case REQUEST_STATISTICS_RSP:
|
|
netdev_dbg(netdev, "Got Statistics Response\n");
|
|
complete(&adapter->stats_done);
|
|
break;
|
|
case REQUEST_DUMP_SIZE_RSP:
|
|
netdev_dbg(netdev, "Got Request Dump Size Response\n");
|
|
handle_dump_size_rsp(crq, adapter);
|
|
break;
|
|
case REQUEST_DUMP_RSP:
|
|
netdev_dbg(netdev, "Got Request Dump Response\n");
|
|
complete(&adapter->fw_done);
|
|
break;
|
|
case QUERY_IP_OFFLOAD_RSP:
|
|
netdev_dbg(netdev, "Got Query IP offload Response\n");
|
|
handle_query_ip_offload_rsp(adapter);
|
|
break;
|
|
case MULTICAST_CTRL_RSP:
|
|
netdev_dbg(netdev, "Got multicast control Response\n");
|
|
break;
|
|
case CONTROL_IP_OFFLOAD_RSP:
|
|
netdev_dbg(netdev, "Got Control IP offload Response\n");
|
|
dma_unmap_single(dev, adapter->ip_offload_ctrl_tok,
|
|
sizeof(adapter->ip_offload_ctrl),
|
|
DMA_TO_DEVICE);
|
|
/* We're done with the queries, perform the login */
|
|
send_login(adapter);
|
|
break;
|
|
case REQUEST_RAS_COMP_NUM_RSP:
|
|
netdev_dbg(netdev, "Got Request RAS Comp Num Response\n");
|
|
if (crq->request_ras_comp_num_rsp.rc.code == 10) {
|
|
netdev_dbg(netdev, "Request RAS Comp Num not supported\n");
|
|
break;
|
|
}
|
|
adapter->ras_comp_num =
|
|
be32_to_cpu(crq->request_ras_comp_num_rsp.num_components);
|
|
handle_request_ras_comp_num_rsp(crq, adapter);
|
|
break;
|
|
case REQUEST_RAS_COMPS_RSP:
|
|
netdev_dbg(netdev, "Got Request RAS Comps Response\n");
|
|
handle_request_ras_comps_rsp(crq, adapter);
|
|
break;
|
|
case CONTROL_RAS_RSP:
|
|
netdev_dbg(netdev, "Got Control RAS Response\n");
|
|
handle_control_ras_rsp(crq, adapter);
|
|
break;
|
|
case COLLECT_FW_TRACE_RSP:
|
|
netdev_dbg(netdev, "Got Collect firmware trace Response\n");
|
|
complete(&adapter->fw_done);
|
|
break;
|
|
default:
|
|
netdev_err(netdev, "Got an invalid cmd type 0x%02x\n",
|
|
gen_crq->cmd);
|
|
}
|
|
}
|
|
|
|
static irqreturn_t ibmvnic_interrupt(int irq, void *instance)
|
|
{
|
|
struct ibmvnic_adapter *adapter = instance;
|
|
struct ibmvnic_crq_queue *queue = &adapter->crq;
|
|
struct vio_dev *vdev = adapter->vdev;
|
|
union ibmvnic_crq *crq;
|
|
unsigned long flags;
|
|
bool done = false;
|
|
|
|
spin_lock_irqsave(&queue->lock, flags);
|
|
vio_disable_interrupts(vdev);
|
|
while (!done) {
|
|
/* Pull all the valid messages off the CRQ */
|
|
while ((crq = ibmvnic_next_crq(adapter)) != NULL) {
|
|
ibmvnic_handle_crq(crq, adapter);
|
|
crq->generic.first = 0;
|
|
}
|
|
vio_enable_interrupts(vdev);
|
|
crq = ibmvnic_next_crq(adapter);
|
|
if (crq) {
|
|
vio_disable_interrupts(vdev);
|
|
ibmvnic_handle_crq(crq, adapter);
|
|
crq->generic.first = 0;
|
|
} else {
|
|
done = true;
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&queue->lock, flags);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter *adapter)
|
|
{
|
|
struct vio_dev *vdev = adapter->vdev;
|
|
int rc;
|
|
|
|
do {
|
|
rc = plpar_hcall_norets(H_ENABLE_CRQ, vdev->unit_address);
|
|
} while (rc == H_IN_PROGRESS || rc == H_BUSY || H_IS_LONG_BUSY(rc));
|
|
|
|
if (rc)
|
|
dev_err(&vdev->dev, "Error enabling adapter (rc=%d)\n", rc);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int ibmvnic_reset_crq(struct ibmvnic_adapter *adapter)
|
|
{
|
|
struct ibmvnic_crq_queue *crq = &adapter->crq;
|
|
struct device *dev = &adapter->vdev->dev;
|
|
struct vio_dev *vdev = adapter->vdev;
|
|
int rc;
|
|
|
|
/* Close the CRQ */
|
|
do {
|
|
rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
|
|
} while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
|
|
|
|
/* Clean out the queue */
|
|
memset(crq->msgs, 0, PAGE_SIZE);
|
|
crq->cur = 0;
|
|
|
|
/* And re-open it again */
|
|
rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address,
|
|
crq->msg_token, PAGE_SIZE);
|
|
|
|
if (rc == H_CLOSED)
|
|
/* Adapter is good, but other end is not ready */
|
|
dev_warn(dev, "Partner adapter not ready\n");
|
|
else if (rc != 0)
|
|
dev_warn(dev, "Couldn't register crq (rc=%d)\n", rc);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static void ibmvnic_release_crq_queue(struct ibmvnic_adapter *adapter)
|
|
{
|
|
struct ibmvnic_crq_queue *crq = &adapter->crq;
|
|
struct vio_dev *vdev = adapter->vdev;
|
|
long rc;
|
|
|
|
netdev_dbg(adapter->netdev, "Releasing CRQ\n");
|
|
free_irq(vdev->irq, adapter);
|
|
do {
|
|
rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
|
|
} while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
|
|
|
|
dma_unmap_single(&vdev->dev, crq->msg_token, PAGE_SIZE,
|
|
DMA_BIDIRECTIONAL);
|
|
free_page((unsigned long)crq->msgs);
|
|
}
|
|
|
|
static int ibmvnic_init_crq_queue(struct ibmvnic_adapter *adapter)
|
|
{
|
|
struct ibmvnic_crq_queue *crq = &adapter->crq;
|
|
struct device *dev = &adapter->vdev->dev;
|
|
struct vio_dev *vdev = adapter->vdev;
|
|
int rc, retrc = -ENOMEM;
|
|
|
|
crq->msgs = (union ibmvnic_crq *)get_zeroed_page(GFP_KERNEL);
|
|
/* Should we allocate more than one page? */
|
|
|
|
if (!crq->msgs)
|
|
return -ENOMEM;
|
|
|
|
crq->size = PAGE_SIZE / sizeof(*crq->msgs);
|
|
crq->msg_token = dma_map_single(dev, crq->msgs, PAGE_SIZE,
|
|
DMA_BIDIRECTIONAL);
|
|
if (dma_mapping_error(dev, crq->msg_token))
|
|
goto map_failed;
|
|
|
|
rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address,
|
|
crq->msg_token, PAGE_SIZE);
|
|
|
|
if (rc == H_RESOURCE)
|
|
/* maybe kexecing and resource is busy. try a reset */
|
|
rc = ibmvnic_reset_crq(adapter);
|
|
retrc = rc;
|
|
|
|
if (rc == H_CLOSED) {
|
|
dev_warn(dev, "Partner adapter not ready\n");
|
|
} else if (rc) {
|
|
dev_warn(dev, "Error %d opening adapter\n", rc);
|
|
goto reg_crq_failed;
|
|
}
|
|
|
|
retrc = 0;
|
|
|
|
netdev_dbg(adapter->netdev, "registering irq 0x%x\n", vdev->irq);
|
|
rc = request_irq(vdev->irq, ibmvnic_interrupt, 0, IBMVNIC_NAME,
|
|
adapter);
|
|
if (rc) {
|
|
dev_err(dev, "Couldn't register irq 0x%x. rc=%d\n",
|
|
vdev->irq, rc);
|
|
goto req_irq_failed;
|
|
}
|
|
|
|
rc = vio_enable_interrupts(vdev);
|
|
if (rc) {
|
|
dev_err(dev, "Error %d enabling interrupts\n", rc);
|
|
goto req_irq_failed;
|
|
}
|
|
|
|
crq->cur = 0;
|
|
spin_lock_init(&crq->lock);
|
|
|
|
return retrc;
|
|
|
|
req_irq_failed:
|
|
do {
|
|
rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
|
|
} while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
|
|
reg_crq_failed:
|
|
dma_unmap_single(dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL);
|
|
map_failed:
|
|
free_page((unsigned long)crq->msgs);
|
|
return retrc;
|
|
}
|
|
|
|
/* debugfs for dump */
|
|
static int ibmvnic_dump_show(struct seq_file *seq, void *v)
|
|
{
|
|
struct net_device *netdev = seq->private;
|
|
struct ibmvnic_adapter *adapter = netdev_priv(netdev);
|
|
struct device *dev = &adapter->vdev->dev;
|
|
union ibmvnic_crq crq;
|
|
|
|
memset(&crq, 0, sizeof(crq));
|
|
crq.request_dump_size.first = IBMVNIC_CRQ_CMD;
|
|
crq.request_dump_size.cmd = REQUEST_DUMP_SIZE;
|
|
ibmvnic_send_crq(adapter, &crq);
|
|
|
|
init_completion(&adapter->fw_done);
|
|
wait_for_completion(&adapter->fw_done);
|
|
|
|
seq_write(seq, adapter->dump_data, adapter->dump_data_size);
|
|
|
|
dma_unmap_single(dev, adapter->dump_data_token, adapter->dump_data_size,
|
|
DMA_BIDIRECTIONAL);
|
|
|
|
kfree(adapter->dump_data);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ibmvnic_dump_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, ibmvnic_dump_show, inode->i_private);
|
|
}
|
|
|
|
static const struct file_operations ibmvnic_dump_ops = {
|
|
.owner = THIS_MODULE,
|
|
.open = ibmvnic_dump_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
static void handle_crq_init_rsp(struct work_struct *work)
|
|
{
|
|
struct ibmvnic_adapter *adapter = container_of(work,
|
|
struct ibmvnic_adapter,
|
|
vnic_crq_init);
|
|
struct device *dev = &adapter->vdev->dev;
|
|
struct net_device *netdev = adapter->netdev;
|
|
unsigned long timeout = msecs_to_jiffies(30000);
|
|
int rc;
|
|
|
|
send_version_xchg(adapter);
|
|
reinit_completion(&adapter->init_done);
|
|
if (!wait_for_completion_timeout(&adapter->init_done, timeout)) {
|
|
dev_err(dev, "Passive init timeout\n");
|
|
goto task_failed;
|
|
}
|
|
|
|
do {
|
|
if (adapter->renegotiate) {
|
|
adapter->renegotiate = false;
|
|
release_sub_crqs_no_irqs(adapter);
|
|
send_cap_queries(adapter);
|
|
|
|
reinit_completion(&adapter->init_done);
|
|
if (!wait_for_completion_timeout(&adapter->init_done,
|
|
timeout)) {
|
|
dev_err(dev, "Passive init timeout\n");
|
|
goto task_failed;
|
|
}
|
|
}
|
|
} while (adapter->renegotiate);
|
|
rc = init_sub_crq_irqs(adapter);
|
|
|
|
if (rc)
|
|
goto task_failed;
|
|
|
|
netdev->real_num_tx_queues = adapter->req_tx_queues;
|
|
|
|
rc = register_netdev(netdev);
|
|
if (rc) {
|
|
dev_err(dev,
|
|
"failed to register netdev rc=%d\n", rc);
|
|
goto register_failed;
|
|
}
|
|
dev_info(dev, "ibmvnic registered\n");
|
|
|
|
return;
|
|
|
|
register_failed:
|
|
release_sub_crqs(adapter);
|
|
task_failed:
|
|
dev_err(dev, "Passive initialization was not successful\n");
|
|
}
|
|
|
|
static int ibmvnic_probe(struct vio_dev *dev, const struct vio_device_id *id)
|
|
{
|
|
unsigned long timeout = msecs_to_jiffies(30000);
|
|
struct ibmvnic_adapter *adapter;
|
|
struct net_device *netdev;
|
|
unsigned char *mac_addr_p;
|
|
struct dentry *ent;
|
|
char buf[16]; /* debugfs name buf */
|
|
int rc;
|
|
|
|
dev_dbg(&dev->dev, "entering ibmvnic_probe for UA 0x%x\n",
|
|
dev->unit_address);
|
|
|
|
mac_addr_p = (unsigned char *)vio_get_attribute(dev,
|
|
VETH_MAC_ADDR, NULL);
|
|
if (!mac_addr_p) {
|
|
dev_err(&dev->dev,
|
|
"(%s:%3.3d) ERROR: Can't find MAC_ADDR attribute\n",
|
|
__FILE__, __LINE__);
|
|
return 0;
|
|
}
|
|
|
|
netdev = alloc_etherdev_mq(sizeof(struct ibmvnic_adapter),
|
|
IBMVNIC_MAX_TX_QUEUES);
|
|
if (!netdev)
|
|
return -ENOMEM;
|
|
|
|
adapter = netdev_priv(netdev);
|
|
dev_set_drvdata(&dev->dev, netdev);
|
|
adapter->vdev = dev;
|
|
adapter->netdev = netdev;
|
|
|
|
ether_addr_copy(adapter->mac_addr, mac_addr_p);
|
|
ether_addr_copy(netdev->dev_addr, adapter->mac_addr);
|
|
netdev->irq = dev->irq;
|
|
netdev->netdev_ops = &ibmvnic_netdev_ops;
|
|
netdev->ethtool_ops = &ibmvnic_ethtool_ops;
|
|
SET_NETDEV_DEV(netdev, &dev->dev);
|
|
|
|
INIT_WORK(&adapter->vnic_crq_init, handle_crq_init_rsp);
|
|
|
|
spin_lock_init(&adapter->stats_lock);
|
|
|
|
rc = ibmvnic_init_crq_queue(adapter);
|
|
if (rc) {
|
|
dev_err(&dev->dev, "Couldn't initialize crq. rc=%d\n", rc);
|
|
goto free_netdev;
|
|
}
|
|
|
|
INIT_LIST_HEAD(&adapter->errors);
|
|
INIT_LIST_HEAD(&adapter->inflight);
|
|
spin_lock_init(&adapter->error_list_lock);
|
|
spin_lock_init(&adapter->inflight_lock);
|
|
|
|
adapter->stats_token = dma_map_single(&dev->dev, &adapter->stats,
|
|
sizeof(struct ibmvnic_statistics),
|
|
DMA_FROM_DEVICE);
|
|
if (dma_mapping_error(&dev->dev, adapter->stats_token)) {
|
|
if (!firmware_has_feature(FW_FEATURE_CMO))
|
|
dev_err(&dev->dev, "Couldn't map stats buffer\n");
|
|
goto free_crq;
|
|
}
|
|
|
|
snprintf(buf, sizeof(buf), "ibmvnic_%x", dev->unit_address);
|
|
ent = debugfs_create_dir(buf, NULL);
|
|
if (!ent || IS_ERR(ent)) {
|
|
dev_info(&dev->dev, "debugfs create directory failed\n");
|
|
adapter->debugfs_dir = NULL;
|
|
} else {
|
|
adapter->debugfs_dir = ent;
|
|
ent = debugfs_create_file("dump", S_IRUGO, adapter->debugfs_dir,
|
|
netdev, &ibmvnic_dump_ops);
|
|
if (!ent || IS_ERR(ent)) {
|
|
dev_info(&dev->dev,
|
|
"debugfs create dump file failed\n");
|
|
adapter->debugfs_dump = NULL;
|
|
} else {
|
|
adapter->debugfs_dump = ent;
|
|
}
|
|
}
|
|
ibmvnic_send_crq_init(adapter);
|
|
|
|
init_completion(&adapter->init_done);
|
|
if (!wait_for_completion_timeout(&adapter->init_done, timeout))
|
|
return 0;
|
|
|
|
do {
|
|
if (adapter->renegotiate) {
|
|
adapter->renegotiate = false;
|
|
release_sub_crqs_no_irqs(adapter);
|
|
send_cap_queries(adapter);
|
|
|
|
reinit_completion(&adapter->init_done);
|
|
if (!wait_for_completion_timeout(&adapter->init_done,
|
|
timeout))
|
|
return 0;
|
|
}
|
|
} while (adapter->renegotiate);
|
|
|
|
rc = init_sub_crq_irqs(adapter);
|
|
if (rc) {
|
|
dev_err(&dev->dev, "failed to initialize sub crq irqs\n");
|
|
goto free_debugfs;
|
|
}
|
|
|
|
netdev->real_num_tx_queues = adapter->req_tx_queues;
|
|
|
|
rc = register_netdev(netdev);
|
|
if (rc) {
|
|
dev_err(&dev->dev, "failed to register netdev rc=%d\n", rc);
|
|
goto free_sub_crqs;
|
|
}
|
|
dev_info(&dev->dev, "ibmvnic registered\n");
|
|
|
|
return 0;
|
|
|
|
free_sub_crqs:
|
|
release_sub_crqs(adapter);
|
|
free_debugfs:
|
|
if (adapter->debugfs_dir && !IS_ERR(adapter->debugfs_dir))
|
|
debugfs_remove_recursive(adapter->debugfs_dir);
|
|
free_crq:
|
|
ibmvnic_release_crq_queue(adapter);
|
|
free_netdev:
|
|
free_netdev(netdev);
|
|
return rc;
|
|
}
|
|
|
|
static int ibmvnic_remove(struct vio_dev *dev)
|
|
{
|
|
struct net_device *netdev = dev_get_drvdata(&dev->dev);
|
|
struct ibmvnic_adapter *adapter = netdev_priv(netdev);
|
|
|
|
unregister_netdev(netdev);
|
|
|
|
release_sub_crqs(adapter);
|
|
|
|
ibmvnic_release_crq_queue(adapter);
|
|
|
|
if (adapter->debugfs_dir && !IS_ERR(adapter->debugfs_dir))
|
|
debugfs_remove_recursive(adapter->debugfs_dir);
|
|
|
|
if (adapter->ras_comps)
|
|
dma_free_coherent(&dev->dev,
|
|
adapter->ras_comp_num *
|
|
sizeof(struct ibmvnic_fw_component),
|
|
adapter->ras_comps, adapter->ras_comps_tok);
|
|
|
|
kfree(adapter->ras_comp_int);
|
|
|
|
free_netdev(netdev);
|
|
dev_set_drvdata(&dev->dev, NULL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static unsigned long ibmvnic_get_desired_dma(struct vio_dev *vdev)
|
|
{
|
|
struct net_device *netdev = dev_get_drvdata(&vdev->dev);
|
|
struct ibmvnic_adapter *adapter;
|
|
struct iommu_table *tbl;
|
|
unsigned long ret = 0;
|
|
int i;
|
|
|
|
tbl = get_iommu_table_base(&vdev->dev);
|
|
|
|
/* netdev inits at probe time along with the structures we need below*/
|
|
if (!netdev)
|
|
return IOMMU_PAGE_ALIGN(IBMVNIC_IO_ENTITLEMENT_DEFAULT, tbl);
|
|
|
|
adapter = netdev_priv(netdev);
|
|
|
|
ret += PAGE_SIZE; /* the crq message queue */
|
|
ret += adapter->bounce_buffer_size;
|
|
ret += IOMMU_PAGE_ALIGN(sizeof(struct ibmvnic_statistics), tbl);
|
|
|
|
for (i = 0; i < adapter->req_tx_queues + adapter->req_rx_queues; i++)
|
|
ret += 4 * PAGE_SIZE; /* the scrq message queue */
|
|
|
|
for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
|
|
i++)
|
|
ret += adapter->rx_pool[i].size *
|
|
IOMMU_PAGE_ALIGN(adapter->rx_pool[i].buff_size, tbl);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ibmvnic_resume(struct device *dev)
|
|
{
|
|
struct net_device *netdev = dev_get_drvdata(dev);
|
|
struct ibmvnic_adapter *adapter = netdev_priv(netdev);
|
|
int i;
|
|
|
|
/* kick the interrupt handlers just in case we lost an interrupt */
|
|
for (i = 0; i < adapter->req_rx_queues; i++)
|
|
ibmvnic_interrupt_rx(adapter->rx_scrq[i]->irq,
|
|
adapter->rx_scrq[i]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct vio_device_id ibmvnic_device_table[] = {
|
|
{"network", "IBM,vnic"},
|
|
{"", "" }
|
|
};
|
|
MODULE_DEVICE_TABLE(vio, ibmvnic_device_table);
|
|
|
|
static const struct dev_pm_ops ibmvnic_pm_ops = {
|
|
.resume = ibmvnic_resume
|
|
};
|
|
|
|
static struct vio_driver ibmvnic_driver = {
|
|
.id_table = ibmvnic_device_table,
|
|
.probe = ibmvnic_probe,
|
|
.remove = ibmvnic_remove,
|
|
.get_desired_dma = ibmvnic_get_desired_dma,
|
|
.name = ibmvnic_driver_name,
|
|
.pm = &ibmvnic_pm_ops,
|
|
};
|
|
|
|
/* module functions */
|
|
static int __init ibmvnic_module_init(void)
|
|
{
|
|
pr_info("%s: %s %s\n", ibmvnic_driver_name, ibmvnic_driver_string,
|
|
IBMVNIC_DRIVER_VERSION);
|
|
|
|
return vio_register_driver(&ibmvnic_driver);
|
|
}
|
|
|
|
static void __exit ibmvnic_module_exit(void)
|
|
{
|
|
vio_unregister_driver(&ibmvnic_driver);
|
|
}
|
|
|
|
module_init(ibmvnic_module_init);
|
|
module_exit(ibmvnic_module_exit);
|