1220 lines
32 KiB
C
1220 lines
32 KiB
C
/*
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* Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
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* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
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* Copyright (c) 2005 Mellanox Technologies. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* $Id: mthca_main.c 1396 2004-12-28 04:10:27Z roland $
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*/
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#include <linux/config.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/pci.h>
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#include <linux/interrupt.h>
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#include "mthca_dev.h"
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#include "mthca_config_reg.h"
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#include "mthca_cmd.h"
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#include "mthca_profile.h"
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#include "mthca_memfree.h"
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MODULE_AUTHOR("Roland Dreier");
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MODULE_DESCRIPTION("Mellanox InfiniBand HCA low-level driver");
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MODULE_LICENSE("Dual BSD/GPL");
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MODULE_VERSION(DRV_VERSION);
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#ifdef CONFIG_PCI_MSI
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static int msi_x = 0;
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module_param(msi_x, int, 0444);
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MODULE_PARM_DESC(msi_x, "attempt to use MSI-X if nonzero");
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static int msi = 0;
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module_param(msi, int, 0444);
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MODULE_PARM_DESC(msi, "attempt to use MSI if nonzero");
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#else /* CONFIG_PCI_MSI */
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#define msi_x (0)
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#define msi (0)
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#endif /* CONFIG_PCI_MSI */
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static const char mthca_version[] __devinitdata =
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DRV_NAME ": Mellanox InfiniBand HCA driver v"
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DRV_VERSION " (" DRV_RELDATE ")\n";
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static struct mthca_profile default_profile = {
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.num_qp = 1 << 16,
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.rdb_per_qp = 4,
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.num_cq = 1 << 16,
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.num_mcg = 1 << 13,
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.num_mpt = 1 << 17,
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.num_mtt = 1 << 20,
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.num_udav = 1 << 15, /* Tavor only */
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.fmr_reserved_mtts = 1 << 18, /* Tavor only */
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.uarc_size = 1 << 18, /* Arbel only */
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};
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static int __devinit mthca_tune_pci(struct mthca_dev *mdev)
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{
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int cap;
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u16 val;
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/* First try to max out Read Byte Count */
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cap = pci_find_capability(mdev->pdev, PCI_CAP_ID_PCIX);
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if (cap) {
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if (pci_read_config_word(mdev->pdev, cap + PCI_X_CMD, &val)) {
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mthca_err(mdev, "Couldn't read PCI-X command register, "
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"aborting.\n");
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return -ENODEV;
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}
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val = (val & ~PCI_X_CMD_MAX_READ) | (3 << 2);
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if (pci_write_config_word(mdev->pdev, cap + PCI_X_CMD, val)) {
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mthca_err(mdev, "Couldn't write PCI-X command register, "
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"aborting.\n");
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return -ENODEV;
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}
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} else if (!(mdev->mthca_flags & MTHCA_FLAG_PCIE))
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mthca_info(mdev, "No PCI-X capability, not setting RBC.\n");
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cap = pci_find_capability(mdev->pdev, PCI_CAP_ID_EXP);
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if (cap) {
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if (pci_read_config_word(mdev->pdev, cap + PCI_EXP_DEVCTL, &val)) {
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mthca_err(mdev, "Couldn't read PCI Express device control "
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"register, aborting.\n");
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return -ENODEV;
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}
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val = (val & ~PCI_EXP_DEVCTL_READRQ) | (5 << 12);
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if (pci_write_config_word(mdev->pdev, cap + PCI_EXP_DEVCTL, val)) {
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mthca_err(mdev, "Couldn't write PCI Express device control "
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"register, aborting.\n");
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return -ENODEV;
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}
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} else if (mdev->mthca_flags & MTHCA_FLAG_PCIE)
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mthca_info(mdev, "No PCI Express capability, "
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"not setting Max Read Request Size.\n");
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return 0;
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}
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static int __devinit mthca_dev_lim(struct mthca_dev *mdev, struct mthca_dev_lim *dev_lim)
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{
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int err;
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u8 status;
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err = mthca_QUERY_DEV_LIM(mdev, dev_lim, &status);
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if (err) {
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mthca_err(mdev, "QUERY_DEV_LIM command failed, aborting.\n");
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return err;
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}
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if (status) {
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mthca_err(mdev, "QUERY_DEV_LIM returned status 0x%02x, "
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"aborting.\n", status);
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return -EINVAL;
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}
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if (dev_lim->min_page_sz > PAGE_SIZE) {
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mthca_err(mdev, "HCA minimum page size of %d bigger than "
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"kernel PAGE_SIZE of %ld, aborting.\n",
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dev_lim->min_page_sz, PAGE_SIZE);
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return -ENODEV;
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}
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if (dev_lim->num_ports > MTHCA_MAX_PORTS) {
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mthca_err(mdev, "HCA has %d ports, but we only support %d, "
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"aborting.\n",
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dev_lim->num_ports, MTHCA_MAX_PORTS);
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return -ENODEV;
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}
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mdev->limits.num_ports = dev_lim->num_ports;
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mdev->limits.vl_cap = dev_lim->max_vl;
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mdev->limits.mtu_cap = dev_lim->max_mtu;
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mdev->limits.gid_table_len = dev_lim->max_gids;
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mdev->limits.pkey_table_len = dev_lim->max_pkeys;
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mdev->limits.local_ca_ack_delay = dev_lim->local_ca_ack_delay;
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mdev->limits.max_sg = dev_lim->max_sg;
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mdev->limits.max_wqes = dev_lim->max_qp_sz;
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mdev->limits.max_qp_init_rdma = dev_lim->max_requester_per_qp;
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mdev->limits.reserved_qps = dev_lim->reserved_qps;
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mdev->limits.max_srq_wqes = dev_lim->max_srq_sz;
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mdev->limits.reserved_srqs = dev_lim->reserved_srqs;
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mdev->limits.reserved_eecs = dev_lim->reserved_eecs;
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/*
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* Subtract 1 from the limit because we need to allocate a
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* spare CQE so the HCA HW can tell the difference between an
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* empty CQ and a full CQ.
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*/
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mdev->limits.max_cqes = dev_lim->max_cq_sz - 1;
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mdev->limits.reserved_cqs = dev_lim->reserved_cqs;
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mdev->limits.reserved_eqs = dev_lim->reserved_eqs;
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mdev->limits.reserved_mtts = dev_lim->reserved_mtts;
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mdev->limits.reserved_mrws = dev_lim->reserved_mrws;
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mdev->limits.reserved_uars = dev_lim->reserved_uars;
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mdev->limits.reserved_pds = dev_lim->reserved_pds;
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mdev->limits.port_width_cap = dev_lim->max_port_width;
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mdev->limits.flags = dev_lim->flags;
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/* IB_DEVICE_RESIZE_MAX_WR not supported by driver.
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May be doable since hardware supports it for SRQ.
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IB_DEVICE_N_NOTIFY_CQ is supported by hardware but not by driver.
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IB_DEVICE_SRQ_RESIZE is supported by hardware but SRQ is not
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supported by driver. */
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mdev->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT |
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IB_DEVICE_PORT_ACTIVE_EVENT |
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IB_DEVICE_SYS_IMAGE_GUID |
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IB_DEVICE_RC_RNR_NAK_GEN;
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if (dev_lim->flags & DEV_LIM_FLAG_BAD_PKEY_CNTR)
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mdev->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
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if (dev_lim->flags & DEV_LIM_FLAG_BAD_QKEY_CNTR)
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mdev->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
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if (dev_lim->flags & DEV_LIM_FLAG_RAW_MULTI)
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mdev->device_cap_flags |= IB_DEVICE_RAW_MULTI;
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if (dev_lim->flags & DEV_LIM_FLAG_AUTO_PATH_MIG)
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mdev->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
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if (dev_lim->flags & DEV_LIM_FLAG_UD_AV_PORT_ENFORCE)
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mdev->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
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if (dev_lim->flags & DEV_LIM_FLAG_SRQ)
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mdev->mthca_flags |= MTHCA_FLAG_SRQ;
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return 0;
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}
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static int __devinit mthca_init_tavor(struct mthca_dev *mdev)
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{
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u8 status;
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int err;
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struct mthca_dev_lim dev_lim;
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struct mthca_profile profile;
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struct mthca_init_hca_param init_hca;
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err = mthca_SYS_EN(mdev, &status);
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if (err) {
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mthca_err(mdev, "SYS_EN command failed, aborting.\n");
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return err;
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}
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if (status) {
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mthca_err(mdev, "SYS_EN returned status 0x%02x, "
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"aborting.\n", status);
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return -EINVAL;
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}
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err = mthca_QUERY_FW(mdev, &status);
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if (err) {
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mthca_err(mdev, "QUERY_FW command failed, aborting.\n");
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goto err_disable;
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}
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if (status) {
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mthca_err(mdev, "QUERY_FW returned status 0x%02x, "
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"aborting.\n", status);
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err = -EINVAL;
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goto err_disable;
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}
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err = mthca_QUERY_DDR(mdev, &status);
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if (err) {
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mthca_err(mdev, "QUERY_DDR command failed, aborting.\n");
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goto err_disable;
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}
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if (status) {
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mthca_err(mdev, "QUERY_DDR returned status 0x%02x, "
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"aborting.\n", status);
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err = -EINVAL;
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goto err_disable;
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}
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err = mthca_dev_lim(mdev, &dev_lim);
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profile = default_profile;
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profile.num_uar = dev_lim.uar_size / PAGE_SIZE;
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profile.uarc_size = 0;
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if (mdev->mthca_flags & MTHCA_FLAG_SRQ)
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profile.num_srq = dev_lim.max_srqs;
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err = mthca_make_profile(mdev, &profile, &dev_lim, &init_hca);
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if (err < 0)
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goto err_disable;
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err = mthca_INIT_HCA(mdev, &init_hca, &status);
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if (err) {
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mthca_err(mdev, "INIT_HCA command failed, aborting.\n");
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goto err_disable;
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}
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if (status) {
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mthca_err(mdev, "INIT_HCA returned status 0x%02x, "
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"aborting.\n", status);
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err = -EINVAL;
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goto err_disable;
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}
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return 0;
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err_disable:
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mthca_SYS_DIS(mdev, &status);
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return err;
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}
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static int __devinit mthca_load_fw(struct mthca_dev *mdev)
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{
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u8 status;
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int err;
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/* FIXME: use HCA-attached memory for FW if present */
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mdev->fw.arbel.fw_icm =
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mthca_alloc_icm(mdev, mdev->fw.arbel.fw_pages,
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GFP_HIGHUSER | __GFP_NOWARN);
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if (!mdev->fw.arbel.fw_icm) {
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mthca_err(mdev, "Couldn't allocate FW area, aborting.\n");
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return -ENOMEM;
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}
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err = mthca_MAP_FA(mdev, mdev->fw.arbel.fw_icm, &status);
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if (err) {
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mthca_err(mdev, "MAP_FA command failed, aborting.\n");
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goto err_free;
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}
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if (status) {
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mthca_err(mdev, "MAP_FA returned status 0x%02x, aborting.\n", status);
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err = -EINVAL;
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goto err_free;
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}
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err = mthca_RUN_FW(mdev, &status);
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if (err) {
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mthca_err(mdev, "RUN_FW command failed, aborting.\n");
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goto err_unmap_fa;
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}
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if (status) {
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mthca_err(mdev, "RUN_FW returned status 0x%02x, aborting.\n", status);
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err = -EINVAL;
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goto err_unmap_fa;
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}
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return 0;
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err_unmap_fa:
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mthca_UNMAP_FA(mdev, &status);
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err_free:
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mthca_free_icm(mdev, mdev->fw.arbel.fw_icm);
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return err;
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}
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static int __devinit mthca_init_icm(struct mthca_dev *mdev,
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struct mthca_dev_lim *dev_lim,
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struct mthca_init_hca_param *init_hca,
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u64 icm_size)
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{
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u64 aux_pages;
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u8 status;
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int err;
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err = mthca_SET_ICM_SIZE(mdev, icm_size, &aux_pages, &status);
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if (err) {
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mthca_err(mdev, "SET_ICM_SIZE command failed, aborting.\n");
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return err;
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}
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if (status) {
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mthca_err(mdev, "SET_ICM_SIZE returned status 0x%02x, "
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"aborting.\n", status);
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return -EINVAL;
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}
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|
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mthca_dbg(mdev, "%lld KB of HCA context requires %lld KB aux memory.\n",
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(unsigned long long) icm_size >> 10,
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(unsigned long long) aux_pages << 2);
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mdev->fw.arbel.aux_icm = mthca_alloc_icm(mdev, aux_pages,
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GFP_HIGHUSER | __GFP_NOWARN);
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if (!mdev->fw.arbel.aux_icm) {
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mthca_err(mdev, "Couldn't allocate aux memory, aborting.\n");
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return -ENOMEM;
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}
|
|
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err = mthca_MAP_ICM_AUX(mdev, mdev->fw.arbel.aux_icm, &status);
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if (err) {
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mthca_err(mdev, "MAP_ICM_AUX command failed, aborting.\n");
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goto err_free_aux;
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}
|
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if (status) {
|
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mthca_err(mdev, "MAP_ICM_AUX returned status 0x%02x, aborting.\n", status);
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err = -EINVAL;
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goto err_free_aux;
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}
|
|
|
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err = mthca_map_eq_icm(mdev, init_hca->eqc_base);
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if (err) {
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mthca_err(mdev, "Failed to map EQ context memory, aborting.\n");
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goto err_unmap_aux;
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}
|
|
|
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mdev->mr_table.mtt_table = mthca_alloc_icm_table(mdev, init_hca->mtt_base,
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MTHCA_MTT_SEG_SIZE,
|
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mdev->limits.num_mtt_segs,
|
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mdev->limits.reserved_mtts, 1);
|
|
if (!mdev->mr_table.mtt_table) {
|
|
mthca_err(mdev, "Failed to map MTT context memory, aborting.\n");
|
|
err = -ENOMEM;
|
|
goto err_unmap_eq;
|
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}
|
|
|
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mdev->mr_table.mpt_table = mthca_alloc_icm_table(mdev, init_hca->mpt_base,
|
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dev_lim->mpt_entry_sz,
|
|
mdev->limits.num_mpts,
|
|
mdev->limits.reserved_mrws, 1);
|
|
if (!mdev->mr_table.mpt_table) {
|
|
mthca_err(mdev, "Failed to map MPT context memory, aborting.\n");
|
|
err = -ENOMEM;
|
|
goto err_unmap_mtt;
|
|
}
|
|
|
|
mdev->qp_table.qp_table = mthca_alloc_icm_table(mdev, init_hca->qpc_base,
|
|
dev_lim->qpc_entry_sz,
|
|
mdev->limits.num_qps,
|
|
mdev->limits.reserved_qps, 0);
|
|
if (!mdev->qp_table.qp_table) {
|
|
mthca_err(mdev, "Failed to map QP context memory, aborting.\n");
|
|
err = -ENOMEM;
|
|
goto err_unmap_mpt;
|
|
}
|
|
|
|
mdev->qp_table.eqp_table = mthca_alloc_icm_table(mdev, init_hca->eqpc_base,
|
|
dev_lim->eqpc_entry_sz,
|
|
mdev->limits.num_qps,
|
|
mdev->limits.reserved_qps, 0);
|
|
if (!mdev->qp_table.eqp_table) {
|
|
mthca_err(mdev, "Failed to map EQP context memory, aborting.\n");
|
|
err = -ENOMEM;
|
|
goto err_unmap_qp;
|
|
}
|
|
|
|
mdev->qp_table.rdb_table = mthca_alloc_icm_table(mdev, init_hca->rdb_base,
|
|
MTHCA_RDB_ENTRY_SIZE,
|
|
mdev->limits.num_qps <<
|
|
mdev->qp_table.rdb_shift,
|
|
0, 0);
|
|
if (!mdev->qp_table.rdb_table) {
|
|
mthca_err(mdev, "Failed to map RDB context memory, aborting\n");
|
|
err = -ENOMEM;
|
|
goto err_unmap_eqp;
|
|
}
|
|
|
|
mdev->cq_table.table = mthca_alloc_icm_table(mdev, init_hca->cqc_base,
|
|
dev_lim->cqc_entry_sz,
|
|
mdev->limits.num_cqs,
|
|
mdev->limits.reserved_cqs, 0);
|
|
if (!mdev->cq_table.table) {
|
|
mthca_err(mdev, "Failed to map CQ context memory, aborting.\n");
|
|
err = -ENOMEM;
|
|
goto err_unmap_rdb;
|
|
}
|
|
|
|
if (mdev->mthca_flags & MTHCA_FLAG_SRQ) {
|
|
mdev->srq_table.table =
|
|
mthca_alloc_icm_table(mdev, init_hca->srqc_base,
|
|
dev_lim->srq_entry_sz,
|
|
mdev->limits.num_srqs,
|
|
mdev->limits.reserved_srqs, 0);
|
|
if (!mdev->srq_table.table) {
|
|
mthca_err(mdev, "Failed to map SRQ context memory, "
|
|
"aborting.\n");
|
|
err = -ENOMEM;
|
|
goto err_unmap_cq;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* It's not strictly required, but for simplicity just map the
|
|
* whole multicast group table now. The table isn't very big
|
|
* and it's a lot easier than trying to track ref counts.
|
|
*/
|
|
mdev->mcg_table.table = mthca_alloc_icm_table(mdev, init_hca->mc_base,
|
|
MTHCA_MGM_ENTRY_SIZE,
|
|
mdev->limits.num_mgms +
|
|
mdev->limits.num_amgms,
|
|
mdev->limits.num_mgms +
|
|
mdev->limits.num_amgms,
|
|
0);
|
|
if (!mdev->mcg_table.table) {
|
|
mthca_err(mdev, "Failed to map MCG context memory, aborting.\n");
|
|
err = -ENOMEM;
|
|
goto err_unmap_srq;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_unmap_srq:
|
|
if (mdev->mthca_flags & MTHCA_FLAG_SRQ)
|
|
mthca_free_icm_table(mdev, mdev->srq_table.table);
|
|
|
|
err_unmap_cq:
|
|
mthca_free_icm_table(mdev, mdev->cq_table.table);
|
|
|
|
err_unmap_rdb:
|
|
mthca_free_icm_table(mdev, mdev->qp_table.rdb_table);
|
|
|
|
err_unmap_eqp:
|
|
mthca_free_icm_table(mdev, mdev->qp_table.eqp_table);
|
|
|
|
err_unmap_qp:
|
|
mthca_free_icm_table(mdev, mdev->qp_table.qp_table);
|
|
|
|
err_unmap_mpt:
|
|
mthca_free_icm_table(mdev, mdev->mr_table.mpt_table);
|
|
|
|
err_unmap_mtt:
|
|
mthca_free_icm_table(mdev, mdev->mr_table.mtt_table);
|
|
|
|
err_unmap_eq:
|
|
mthca_unmap_eq_icm(mdev);
|
|
|
|
err_unmap_aux:
|
|
mthca_UNMAP_ICM_AUX(mdev, &status);
|
|
|
|
err_free_aux:
|
|
mthca_free_icm(mdev, mdev->fw.arbel.aux_icm);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void mthca_free_icms(struct mthca_dev *mdev)
|
|
{
|
|
u8 status;
|
|
|
|
mthca_free_icm_table(mdev, mdev->mcg_table.table);
|
|
if (mdev->mthca_flags & MTHCA_FLAG_SRQ)
|
|
mthca_free_icm_table(mdev, mdev->srq_table.table);
|
|
mthca_free_icm_table(mdev, mdev->cq_table.table);
|
|
mthca_free_icm_table(mdev, mdev->qp_table.rdb_table);
|
|
mthca_free_icm_table(mdev, mdev->qp_table.eqp_table);
|
|
mthca_free_icm_table(mdev, mdev->qp_table.qp_table);
|
|
mthca_free_icm_table(mdev, mdev->mr_table.mpt_table);
|
|
mthca_free_icm_table(mdev, mdev->mr_table.mtt_table);
|
|
mthca_unmap_eq_icm(mdev);
|
|
|
|
mthca_UNMAP_ICM_AUX(mdev, &status);
|
|
mthca_free_icm(mdev, mdev->fw.arbel.aux_icm);
|
|
}
|
|
|
|
static int __devinit mthca_init_arbel(struct mthca_dev *mdev)
|
|
{
|
|
struct mthca_dev_lim dev_lim;
|
|
struct mthca_profile profile;
|
|
struct mthca_init_hca_param init_hca;
|
|
u64 icm_size;
|
|
u8 status;
|
|
int err;
|
|
|
|
err = mthca_QUERY_FW(mdev, &status);
|
|
if (err) {
|
|
mthca_err(mdev, "QUERY_FW command failed, aborting.\n");
|
|
return err;
|
|
}
|
|
if (status) {
|
|
mthca_err(mdev, "QUERY_FW returned status 0x%02x, "
|
|
"aborting.\n", status);
|
|
return -EINVAL;
|
|
}
|
|
|
|
err = mthca_ENABLE_LAM(mdev, &status);
|
|
if (err) {
|
|
mthca_err(mdev, "ENABLE_LAM command failed, aborting.\n");
|
|
return err;
|
|
}
|
|
if (status == MTHCA_CMD_STAT_LAM_NOT_PRE) {
|
|
mthca_dbg(mdev, "No HCA-attached memory (running in MemFree mode)\n");
|
|
mdev->mthca_flags |= MTHCA_FLAG_NO_LAM;
|
|
} else if (status) {
|
|
mthca_err(mdev, "ENABLE_LAM returned status 0x%02x, "
|
|
"aborting.\n", status);
|
|
return -EINVAL;
|
|
}
|
|
|
|
err = mthca_load_fw(mdev);
|
|
if (err) {
|
|
mthca_err(mdev, "Failed to start FW, aborting.\n");
|
|
goto err_disable;
|
|
}
|
|
|
|
err = mthca_dev_lim(mdev, &dev_lim);
|
|
if (err) {
|
|
mthca_err(mdev, "QUERY_DEV_LIM command failed, aborting.\n");
|
|
goto err_stop_fw;
|
|
}
|
|
|
|
profile = default_profile;
|
|
profile.num_uar = dev_lim.uar_size / PAGE_SIZE;
|
|
profile.num_udav = 0;
|
|
if (mdev->mthca_flags & MTHCA_FLAG_SRQ)
|
|
profile.num_srq = dev_lim.max_srqs;
|
|
|
|
icm_size = mthca_make_profile(mdev, &profile, &dev_lim, &init_hca);
|
|
if ((int) icm_size < 0) {
|
|
err = icm_size;
|
|
goto err_stop_fw;
|
|
}
|
|
|
|
err = mthca_init_icm(mdev, &dev_lim, &init_hca, icm_size);
|
|
if (err)
|
|
goto err_stop_fw;
|
|
|
|
err = mthca_INIT_HCA(mdev, &init_hca, &status);
|
|
if (err) {
|
|
mthca_err(mdev, "INIT_HCA command failed, aborting.\n");
|
|
goto err_free_icm;
|
|
}
|
|
if (status) {
|
|
mthca_err(mdev, "INIT_HCA returned status 0x%02x, "
|
|
"aborting.\n", status);
|
|
err = -EINVAL;
|
|
goto err_free_icm;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_free_icm:
|
|
mthca_free_icms(mdev);
|
|
|
|
err_stop_fw:
|
|
mthca_UNMAP_FA(mdev, &status);
|
|
mthca_free_icm(mdev, mdev->fw.arbel.fw_icm);
|
|
|
|
err_disable:
|
|
if (!(mdev->mthca_flags & MTHCA_FLAG_NO_LAM))
|
|
mthca_DISABLE_LAM(mdev, &status);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void mthca_close_hca(struct mthca_dev *mdev)
|
|
{
|
|
u8 status;
|
|
|
|
mthca_CLOSE_HCA(mdev, 0, &status);
|
|
|
|
if (mthca_is_memfree(mdev)) {
|
|
mthca_free_icms(mdev);
|
|
|
|
mthca_UNMAP_FA(mdev, &status);
|
|
mthca_free_icm(mdev, mdev->fw.arbel.fw_icm);
|
|
|
|
if (!(mdev->mthca_flags & MTHCA_FLAG_NO_LAM))
|
|
mthca_DISABLE_LAM(mdev, &status);
|
|
} else
|
|
mthca_SYS_DIS(mdev, &status);
|
|
}
|
|
|
|
static int __devinit mthca_init_hca(struct mthca_dev *mdev)
|
|
{
|
|
u8 status;
|
|
int err;
|
|
struct mthca_adapter adapter;
|
|
|
|
if (mthca_is_memfree(mdev))
|
|
err = mthca_init_arbel(mdev);
|
|
else
|
|
err = mthca_init_tavor(mdev);
|
|
|
|
if (err)
|
|
return err;
|
|
|
|
err = mthca_QUERY_ADAPTER(mdev, &adapter, &status);
|
|
if (err) {
|
|
mthca_err(mdev, "QUERY_ADAPTER command failed, aborting.\n");
|
|
goto err_close;
|
|
}
|
|
if (status) {
|
|
mthca_err(mdev, "QUERY_ADAPTER returned status 0x%02x, "
|
|
"aborting.\n", status);
|
|
err = -EINVAL;
|
|
goto err_close;
|
|
}
|
|
|
|
mdev->eq_table.inta_pin = adapter.inta_pin;
|
|
mdev->rev_id = adapter.revision_id;
|
|
memcpy(mdev->board_id, adapter.board_id, sizeof mdev->board_id);
|
|
|
|
return 0;
|
|
|
|
err_close:
|
|
mthca_close_hca(mdev);
|
|
return err;
|
|
}
|
|
|
|
static int __devinit mthca_setup_hca(struct mthca_dev *dev)
|
|
{
|
|
int err;
|
|
u8 status;
|
|
|
|
MTHCA_INIT_DOORBELL_LOCK(&dev->doorbell_lock);
|
|
|
|
err = mthca_init_uar_table(dev);
|
|
if (err) {
|
|
mthca_err(dev, "Failed to initialize "
|
|
"user access region table, aborting.\n");
|
|
return err;
|
|
}
|
|
|
|
err = mthca_uar_alloc(dev, &dev->driver_uar);
|
|
if (err) {
|
|
mthca_err(dev, "Failed to allocate driver access region, "
|
|
"aborting.\n");
|
|
goto err_uar_table_free;
|
|
}
|
|
|
|
dev->kar = ioremap(dev->driver_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
|
|
if (!dev->kar) {
|
|
mthca_err(dev, "Couldn't map kernel access region, "
|
|
"aborting.\n");
|
|
err = -ENOMEM;
|
|
goto err_uar_free;
|
|
}
|
|
|
|
err = mthca_init_pd_table(dev);
|
|
if (err) {
|
|
mthca_err(dev, "Failed to initialize "
|
|
"protection domain table, aborting.\n");
|
|
goto err_kar_unmap;
|
|
}
|
|
|
|
err = mthca_init_mr_table(dev);
|
|
if (err) {
|
|
mthca_err(dev, "Failed to initialize "
|
|
"memory region table, aborting.\n");
|
|
goto err_pd_table_free;
|
|
}
|
|
|
|
err = mthca_pd_alloc(dev, 1, &dev->driver_pd);
|
|
if (err) {
|
|
mthca_err(dev, "Failed to create driver PD, "
|
|
"aborting.\n");
|
|
goto err_mr_table_free;
|
|
}
|
|
|
|
err = mthca_init_eq_table(dev);
|
|
if (err) {
|
|
mthca_err(dev, "Failed to initialize "
|
|
"event queue table, aborting.\n");
|
|
goto err_pd_free;
|
|
}
|
|
|
|
err = mthca_cmd_use_events(dev);
|
|
if (err) {
|
|
mthca_err(dev, "Failed to switch to event-driven "
|
|
"firmware commands, aborting.\n");
|
|
goto err_eq_table_free;
|
|
}
|
|
|
|
err = mthca_NOP(dev, &status);
|
|
if (err || status) {
|
|
mthca_err(dev, "NOP command failed to generate interrupt (IRQ %d), aborting.\n",
|
|
dev->mthca_flags & MTHCA_FLAG_MSI_X ?
|
|
dev->eq_table.eq[MTHCA_EQ_CMD].msi_x_vector :
|
|
dev->pdev->irq);
|
|
if (dev->mthca_flags & (MTHCA_FLAG_MSI | MTHCA_FLAG_MSI_X))
|
|
mthca_err(dev, "Try again with MSI/MSI-X disabled.\n");
|
|
else
|
|
mthca_err(dev, "BIOS or ACPI interrupt routing problem?\n");
|
|
|
|
goto err_cmd_poll;
|
|
}
|
|
|
|
mthca_dbg(dev, "NOP command IRQ test passed\n");
|
|
|
|
err = mthca_init_cq_table(dev);
|
|
if (err) {
|
|
mthca_err(dev, "Failed to initialize "
|
|
"completion queue table, aborting.\n");
|
|
goto err_cmd_poll;
|
|
}
|
|
|
|
err = mthca_init_srq_table(dev);
|
|
if (err) {
|
|
mthca_err(dev, "Failed to initialize "
|
|
"shared receive queue table, aborting.\n");
|
|
goto err_cq_table_free;
|
|
}
|
|
|
|
err = mthca_init_qp_table(dev);
|
|
if (err) {
|
|
mthca_err(dev, "Failed to initialize "
|
|
"queue pair table, aborting.\n");
|
|
goto err_srq_table_free;
|
|
}
|
|
|
|
err = mthca_init_av_table(dev);
|
|
if (err) {
|
|
mthca_err(dev, "Failed to initialize "
|
|
"address vector table, aborting.\n");
|
|
goto err_qp_table_free;
|
|
}
|
|
|
|
err = mthca_init_mcg_table(dev);
|
|
if (err) {
|
|
mthca_err(dev, "Failed to initialize "
|
|
"multicast group table, aborting.\n");
|
|
goto err_av_table_free;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_av_table_free:
|
|
mthca_cleanup_av_table(dev);
|
|
|
|
err_qp_table_free:
|
|
mthca_cleanup_qp_table(dev);
|
|
|
|
err_srq_table_free:
|
|
mthca_cleanup_srq_table(dev);
|
|
|
|
err_cq_table_free:
|
|
mthca_cleanup_cq_table(dev);
|
|
|
|
err_cmd_poll:
|
|
mthca_cmd_use_polling(dev);
|
|
|
|
err_eq_table_free:
|
|
mthca_cleanup_eq_table(dev);
|
|
|
|
err_pd_free:
|
|
mthca_pd_free(dev, &dev->driver_pd);
|
|
|
|
err_mr_table_free:
|
|
mthca_cleanup_mr_table(dev);
|
|
|
|
err_pd_table_free:
|
|
mthca_cleanup_pd_table(dev);
|
|
|
|
err_kar_unmap:
|
|
iounmap(dev->kar);
|
|
|
|
err_uar_free:
|
|
mthca_uar_free(dev, &dev->driver_uar);
|
|
|
|
err_uar_table_free:
|
|
mthca_cleanup_uar_table(dev);
|
|
return err;
|
|
}
|
|
|
|
static int __devinit mthca_request_regions(struct pci_dev *pdev,
|
|
int ddr_hidden)
|
|
{
|
|
int err;
|
|
|
|
/*
|
|
* We can't just use pci_request_regions() because the MSI-X
|
|
* table is right in the middle of the first BAR. If we did
|
|
* pci_request_region and grab all of the first BAR, then
|
|
* setting up MSI-X would fail, since the PCI core wants to do
|
|
* request_mem_region on the MSI-X vector table.
|
|
*
|
|
* So just request what we need right now, and request any
|
|
* other regions we need when setting up EQs.
|
|
*/
|
|
if (!request_mem_region(pci_resource_start(pdev, 0) + MTHCA_HCR_BASE,
|
|
MTHCA_HCR_SIZE, DRV_NAME))
|
|
return -EBUSY;
|
|
|
|
err = pci_request_region(pdev, 2, DRV_NAME);
|
|
if (err)
|
|
goto err_bar2_failed;
|
|
|
|
if (!ddr_hidden) {
|
|
err = pci_request_region(pdev, 4, DRV_NAME);
|
|
if (err)
|
|
goto err_bar4_failed;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_bar4_failed:
|
|
pci_release_region(pdev, 2);
|
|
|
|
err_bar2_failed:
|
|
release_mem_region(pci_resource_start(pdev, 0) + MTHCA_HCR_BASE,
|
|
MTHCA_HCR_SIZE);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void mthca_release_regions(struct pci_dev *pdev,
|
|
int ddr_hidden)
|
|
{
|
|
if (!ddr_hidden)
|
|
pci_release_region(pdev, 4);
|
|
|
|
pci_release_region(pdev, 2);
|
|
|
|
release_mem_region(pci_resource_start(pdev, 0) + MTHCA_HCR_BASE,
|
|
MTHCA_HCR_SIZE);
|
|
}
|
|
|
|
static int __devinit mthca_enable_msi_x(struct mthca_dev *mdev)
|
|
{
|
|
struct msix_entry entries[3];
|
|
int err;
|
|
|
|
entries[0].entry = 0;
|
|
entries[1].entry = 1;
|
|
entries[2].entry = 2;
|
|
|
|
err = pci_enable_msix(mdev->pdev, entries, ARRAY_SIZE(entries));
|
|
if (err) {
|
|
if (err > 0)
|
|
mthca_info(mdev, "Only %d MSI-X vectors available, "
|
|
"not using MSI-X\n", err);
|
|
return err;
|
|
}
|
|
|
|
mdev->eq_table.eq[MTHCA_EQ_COMP ].msi_x_vector = entries[0].vector;
|
|
mdev->eq_table.eq[MTHCA_EQ_ASYNC].msi_x_vector = entries[1].vector;
|
|
mdev->eq_table.eq[MTHCA_EQ_CMD ].msi_x_vector = entries[2].vector;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Types of supported HCA */
|
|
enum {
|
|
TAVOR, /* MT23108 */
|
|
ARBEL_COMPAT, /* MT25208 in Tavor compat mode */
|
|
ARBEL_NATIVE, /* MT25208 with extended features */
|
|
SINAI /* MT25204 */
|
|
};
|
|
|
|
#define MTHCA_FW_VER(major, minor, subminor) \
|
|
(((u64) (major) << 32) | ((u64) (minor) << 16) | (u64) (subminor))
|
|
|
|
static struct {
|
|
u64 latest_fw;
|
|
int is_memfree;
|
|
int is_pcie;
|
|
} mthca_hca_table[] = {
|
|
[TAVOR] = { .latest_fw = MTHCA_FW_VER(3, 3, 3), .is_memfree = 0, .is_pcie = 0 },
|
|
[ARBEL_COMPAT] = { .latest_fw = MTHCA_FW_VER(4, 7, 0), .is_memfree = 0, .is_pcie = 1 },
|
|
[ARBEL_NATIVE] = { .latest_fw = MTHCA_FW_VER(5, 1, 0), .is_memfree = 1, .is_pcie = 1 },
|
|
[SINAI] = { .latest_fw = MTHCA_FW_VER(1, 0, 1), .is_memfree = 1, .is_pcie = 1 }
|
|
};
|
|
|
|
static int __devinit mthca_init_one(struct pci_dev *pdev,
|
|
const struct pci_device_id *id)
|
|
{
|
|
static int mthca_version_printed = 0;
|
|
int ddr_hidden = 0;
|
|
int err;
|
|
struct mthca_dev *mdev;
|
|
|
|
if (!mthca_version_printed) {
|
|
printk(KERN_INFO "%s", mthca_version);
|
|
++mthca_version_printed;
|
|
}
|
|
|
|
printk(KERN_INFO PFX "Initializing %s\n",
|
|
pci_name(pdev));
|
|
|
|
if (id->driver_data >= ARRAY_SIZE(mthca_hca_table)) {
|
|
printk(KERN_ERR PFX "%s has invalid driver data %lx\n",
|
|
pci_name(pdev), id->driver_data);
|
|
return -ENODEV;
|
|
}
|
|
|
|
err = pci_enable_device(pdev);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "Cannot enable PCI device, "
|
|
"aborting.\n");
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Check for BARs. We expect 0: 1MB, 2: 8MB, 4: DDR (may not
|
|
* be present)
|
|
*/
|
|
if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
|
|
pci_resource_len(pdev, 0) != 1 << 20) {
|
|
dev_err(&pdev->dev, "Missing DCS, aborting.\n");
|
|
err = -ENODEV;
|
|
goto err_disable_pdev;
|
|
}
|
|
if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM) ||
|
|
pci_resource_len(pdev, 2) != 1 << 23) {
|
|
dev_err(&pdev->dev, "Missing UAR, aborting.\n");
|
|
err = -ENODEV;
|
|
goto err_disable_pdev;
|
|
}
|
|
if (!(pci_resource_flags(pdev, 4) & IORESOURCE_MEM))
|
|
ddr_hidden = 1;
|
|
|
|
err = mthca_request_regions(pdev, ddr_hidden);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "Cannot obtain PCI resources, "
|
|
"aborting.\n");
|
|
goto err_disable_pdev;
|
|
}
|
|
|
|
pci_set_master(pdev);
|
|
|
|
err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
|
|
if (err) {
|
|
dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask.\n");
|
|
err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting.\n");
|
|
goto err_free_res;
|
|
}
|
|
}
|
|
err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
|
|
if (err) {
|
|
dev_warn(&pdev->dev, "Warning: couldn't set 64-bit "
|
|
"consistent PCI DMA mask.\n");
|
|
err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "Can't set consistent PCI DMA mask, "
|
|
"aborting.\n");
|
|
goto err_free_res;
|
|
}
|
|
}
|
|
|
|
mdev = (struct mthca_dev *) ib_alloc_device(sizeof *mdev);
|
|
if (!mdev) {
|
|
dev_err(&pdev->dev, "Device struct alloc failed, "
|
|
"aborting.\n");
|
|
err = -ENOMEM;
|
|
goto err_free_res;
|
|
}
|
|
|
|
mdev->pdev = pdev;
|
|
|
|
if (ddr_hidden)
|
|
mdev->mthca_flags |= MTHCA_FLAG_DDR_HIDDEN;
|
|
if (mthca_hca_table[id->driver_data].is_memfree)
|
|
mdev->mthca_flags |= MTHCA_FLAG_MEMFREE;
|
|
if (mthca_hca_table[id->driver_data].is_pcie)
|
|
mdev->mthca_flags |= MTHCA_FLAG_PCIE;
|
|
|
|
/*
|
|
* Now reset the HCA before we touch the PCI capabilities or
|
|
* attempt a firmware command, since a boot ROM may have left
|
|
* the HCA in an undefined state.
|
|
*/
|
|
err = mthca_reset(mdev);
|
|
if (err) {
|
|
mthca_err(mdev, "Failed to reset HCA, aborting.\n");
|
|
goto err_free_dev;
|
|
}
|
|
|
|
if (msi_x && !mthca_enable_msi_x(mdev))
|
|
mdev->mthca_flags |= MTHCA_FLAG_MSI_X;
|
|
if (msi && !(mdev->mthca_flags & MTHCA_FLAG_MSI_X) &&
|
|
!pci_enable_msi(pdev))
|
|
mdev->mthca_flags |= MTHCA_FLAG_MSI;
|
|
|
|
if (mthca_cmd_init(mdev)) {
|
|
mthca_err(mdev, "Failed to init command interface, aborting.\n");
|
|
goto err_free_dev;
|
|
}
|
|
|
|
err = mthca_tune_pci(mdev);
|
|
if (err)
|
|
goto err_cmd;
|
|
|
|
err = mthca_init_hca(mdev);
|
|
if (err)
|
|
goto err_cmd;
|
|
|
|
if (mdev->fw_ver < mthca_hca_table[id->driver_data].latest_fw) {
|
|
mthca_warn(mdev, "HCA FW version %x.%x.%x is old (%x.%x.%x is current).\n",
|
|
(int) (mdev->fw_ver >> 32), (int) (mdev->fw_ver >> 16) & 0xffff,
|
|
(int) (mdev->fw_ver & 0xffff),
|
|
(int) (mthca_hca_table[id->driver_data].latest_fw >> 32),
|
|
(int) (mthca_hca_table[id->driver_data].latest_fw >> 16) & 0xffff,
|
|
(int) (mthca_hca_table[id->driver_data].latest_fw & 0xffff));
|
|
mthca_warn(mdev, "If you have problems, try updating your HCA FW.\n");
|
|
}
|
|
|
|
err = mthca_setup_hca(mdev);
|
|
if (err)
|
|
goto err_close;
|
|
|
|
err = mthca_register_device(mdev);
|
|
if (err)
|
|
goto err_cleanup;
|
|
|
|
err = mthca_create_agents(mdev);
|
|
if (err)
|
|
goto err_unregister;
|
|
|
|
pci_set_drvdata(pdev, mdev);
|
|
|
|
return 0;
|
|
|
|
err_unregister:
|
|
mthca_unregister_device(mdev);
|
|
|
|
err_cleanup:
|
|
mthca_cleanup_mcg_table(mdev);
|
|
mthca_cleanup_av_table(mdev);
|
|
mthca_cleanup_qp_table(mdev);
|
|
mthca_cleanup_srq_table(mdev);
|
|
mthca_cleanup_cq_table(mdev);
|
|
mthca_cmd_use_polling(mdev);
|
|
mthca_cleanup_eq_table(mdev);
|
|
|
|
mthca_pd_free(mdev, &mdev->driver_pd);
|
|
|
|
mthca_cleanup_mr_table(mdev);
|
|
mthca_cleanup_pd_table(mdev);
|
|
mthca_cleanup_uar_table(mdev);
|
|
|
|
err_close:
|
|
mthca_close_hca(mdev);
|
|
|
|
err_cmd:
|
|
mthca_cmd_cleanup(mdev);
|
|
|
|
err_free_dev:
|
|
if (mdev->mthca_flags & MTHCA_FLAG_MSI_X)
|
|
pci_disable_msix(pdev);
|
|
if (mdev->mthca_flags & MTHCA_FLAG_MSI)
|
|
pci_disable_msi(pdev);
|
|
|
|
ib_dealloc_device(&mdev->ib_dev);
|
|
|
|
err_free_res:
|
|
mthca_release_regions(pdev, ddr_hidden);
|
|
|
|
err_disable_pdev:
|
|
pci_disable_device(pdev);
|
|
pci_set_drvdata(pdev, NULL);
|
|
return err;
|
|
}
|
|
|
|
static void __devexit mthca_remove_one(struct pci_dev *pdev)
|
|
{
|
|
struct mthca_dev *mdev = pci_get_drvdata(pdev);
|
|
u8 status;
|
|
int p;
|
|
|
|
if (mdev) {
|
|
mthca_free_agents(mdev);
|
|
mthca_unregister_device(mdev);
|
|
|
|
for (p = 1; p <= mdev->limits.num_ports; ++p)
|
|
mthca_CLOSE_IB(mdev, p, &status);
|
|
|
|
mthca_cleanup_mcg_table(mdev);
|
|
mthca_cleanup_av_table(mdev);
|
|
mthca_cleanup_qp_table(mdev);
|
|
mthca_cleanup_srq_table(mdev);
|
|
mthca_cleanup_cq_table(mdev);
|
|
mthca_cmd_use_polling(mdev);
|
|
mthca_cleanup_eq_table(mdev);
|
|
|
|
mthca_pd_free(mdev, &mdev->driver_pd);
|
|
|
|
mthca_cleanup_mr_table(mdev);
|
|
mthca_cleanup_pd_table(mdev);
|
|
|
|
iounmap(mdev->kar);
|
|
mthca_uar_free(mdev, &mdev->driver_uar);
|
|
mthca_cleanup_uar_table(mdev);
|
|
mthca_close_hca(mdev);
|
|
mthca_cmd_cleanup(mdev);
|
|
|
|
if (mdev->mthca_flags & MTHCA_FLAG_MSI_X)
|
|
pci_disable_msix(pdev);
|
|
if (mdev->mthca_flags & MTHCA_FLAG_MSI)
|
|
pci_disable_msi(pdev);
|
|
|
|
ib_dealloc_device(&mdev->ib_dev);
|
|
mthca_release_regions(pdev, mdev->mthca_flags &
|
|
MTHCA_FLAG_DDR_HIDDEN);
|
|
pci_disable_device(pdev);
|
|
pci_set_drvdata(pdev, NULL);
|
|
}
|
|
}
|
|
|
|
static struct pci_device_id mthca_pci_table[] = {
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_TAVOR),
|
|
.driver_data = TAVOR },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_TAVOR),
|
|
.driver_data = TAVOR },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT),
|
|
.driver_data = ARBEL_COMPAT },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT),
|
|
.driver_data = ARBEL_COMPAT },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_ARBEL),
|
|
.driver_data = ARBEL_NATIVE },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_ARBEL),
|
|
.driver_data = ARBEL_NATIVE },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_SINAI),
|
|
.driver_data = SINAI },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_SINAI),
|
|
.driver_data = SINAI },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_SINAI_OLD),
|
|
.driver_data = SINAI },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_SINAI_OLD),
|
|
.driver_data = SINAI },
|
|
{ 0, }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(pci, mthca_pci_table);
|
|
|
|
static struct pci_driver mthca_driver = {
|
|
.name = DRV_NAME,
|
|
.owner = THIS_MODULE,
|
|
.id_table = mthca_pci_table,
|
|
.probe = mthca_init_one,
|
|
.remove = __devexit_p(mthca_remove_one)
|
|
};
|
|
|
|
static int __init mthca_init(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = pci_register_driver(&mthca_driver);
|
|
return ret < 0 ? ret : 0;
|
|
}
|
|
|
|
static void __exit mthca_cleanup(void)
|
|
{
|
|
pci_unregister_driver(&mthca_driver);
|
|
}
|
|
|
|
module_init(mthca_init);
|
|
module_exit(mthca_cleanup);
|