forked from Minki/linux
NTB: Split ntb_hw_intel and ntb_transport drivers
Change ntb_hw_intel to use the new NTB hardware abstraction layer. Split ntb_transport into its own driver. Change it to use the new NTB hardware abstraction layer. Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
This commit is contained in:
Allen Hubbe
Jon Mason
parent
a1bd3baeb2
commit
e26a5843f7
@ -26,7 +26,33 @@ as ntb hardware, or hardware drivers, are inserted and removed. The
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registration uses the Linux Device framework, so it should feel familiar to
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anyone who has written a pci driver.
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### NTB Transport Client (ntb\_transport) and NTB Netdev (ntb\_netdev)
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The primary client for NTB is the Transport client, used in tandem with NTB
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Netdev. These drivers function together to create a logical link to the peer,
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across the ntb, to exchange packets of network data. The Transport client
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establishes a logical link to the peer, and creates queue pairs to exchange
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messages and data. The NTB Netdev then creates an ethernet device using a
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Transport queue pair. Network data is copied between socket buffers and the
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Transport queue pair buffer. The Transport client may be used for other things
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besides Netdev, however no other applications have yet been written.
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## NTB Hardware Drivers
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NTB hardware drivers should register devices with the NTB core driver. After
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registering, clients probe and remove functions will be called.
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### NTB Intel Hardware Driver (ntb\_hw\_intel)
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The Intel hardware driver supports NTB on Xeon and Atom CPUs.
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Module Parameters:
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* b2b\_mw\_idx - If the peer ntb is to be accessed via a memory window, then use
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this memory window to access the peer ntb. A value of zero or positive
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starts from the first mw idx, and a negative value starts from the last
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mw idx. Both sides MUST set the same value here! The default value is
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`-1`.
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* b2b\_mw\_share - If the peer ntb is to be accessed via a memory window, and if
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the memory window is large enough, still allow the client to use the
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second half of the memory window for address translation to the peer.
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@ -7007,6 +7007,14 @@ F: drivers/net/ntb_netdev.c
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F: include/linux/ntb.h
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F: include/linux/ntb_transport.h
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NTB INTEL DRIVER
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M: Jon Mason <jdmason@kudzu.us>
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M: Dave Jiang <dave.jiang@intel.com>
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S: Supported
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W: https://github.com/jonmason/ntb/wiki
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T: git git://github.com/jonmason/ntb.git
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F: drivers/ntb/hw/intel/
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NTFS FILESYSTEM
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M: Anton Altaparmakov <anton@tuxera.com>
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L: linux-ntfs-dev@lists.sourceforge.net
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@ -5,6 +5,7 @@
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2012 Intel Corporation. All rights reserved.
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* Copyright (C) 2015 EMC Corporation. All Rights Reserved.
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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 version 2 of the GNU General Public License as
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@ -13,6 +14,7 @@
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* BSD LICENSE
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*
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* Copyright(c) 2012 Intel Corporation. All rights reserved.
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* Copyright (C) 2015 EMC Corporation. All Rights Reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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@ -40,7 +42,7 @@
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Intel PCIe NTB Network Linux driver
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* PCIe NTB Network Linux driver
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*
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* Contact Information:
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* Jon Mason <jon.mason@intel.com>
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@ -49,6 +51,7 @@
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#include <linux/ethtool.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/ntb.h>
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#include <linux/ntb_transport.h>
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#define NTB_NETDEV_VER "0.7"
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@ -70,26 +73,19 @@ struct ntb_netdev {
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static LIST_HEAD(dev_list);
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static void ntb_netdev_event_handler(void *data, int status)
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static void ntb_netdev_event_handler(void *data, int link_is_up)
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{
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struct net_device *ndev = data;
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struct ntb_netdev *dev = netdev_priv(ndev);
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netdev_dbg(ndev, "Event %x, Link %x\n", status,
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netdev_dbg(ndev, "Event %x, Link %x\n", link_is_up,
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ntb_transport_link_query(dev->qp));
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switch (status) {
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case NTB_LINK_DOWN:
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netif_carrier_off(ndev);
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break;
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case NTB_LINK_UP:
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if (!ntb_transport_link_query(dev->qp))
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return;
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if (link_is_up) {
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if (ntb_transport_link_query(dev->qp))
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netif_carrier_on(ndev);
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break;
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default:
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netdev_warn(ndev, "Unsupported event type %d\n", status);
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} else {
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netif_carrier_off(ndev);
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}
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}
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@ -160,8 +156,6 @@ static netdev_tx_t ntb_netdev_start_xmit(struct sk_buff *skb,
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struct ntb_netdev *dev = netdev_priv(ndev);
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int rc;
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netdev_dbg(ndev, "%s: skb len %d\n", __func__, skb->len);
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rc = ntb_transport_tx_enqueue(dev->qp, skb, skb->data, skb->len);
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if (rc)
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goto err;
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@ -322,20 +316,26 @@ static const struct ntb_queue_handlers ntb_netdev_handlers = {
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.event_handler = ntb_netdev_event_handler,
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};
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static int ntb_netdev_probe(struct pci_dev *pdev)
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static int ntb_netdev_probe(struct device *client_dev)
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{
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struct ntb_dev *ntb;
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struct net_device *ndev;
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struct pci_dev *pdev;
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struct ntb_netdev *dev;
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int rc;
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ndev = alloc_etherdev(sizeof(struct ntb_netdev));
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ntb = dev_ntb(client_dev->parent);
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pdev = ntb->pdev;
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if (!pdev)
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return -ENODEV;
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ndev = alloc_etherdev(sizeof(*dev));
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if (!ndev)
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return -ENOMEM;
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dev = netdev_priv(ndev);
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dev->ndev = ndev;
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dev->pdev = pdev;
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BUG_ON(!dev->pdev);
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ndev->features = NETIF_F_HIGHDMA;
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ndev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
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@ -349,7 +349,8 @@ static int ntb_netdev_probe(struct pci_dev *pdev)
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ndev->netdev_ops = &ntb_netdev_ops;
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ndev->ethtool_ops = &ntb_ethtool_ops;
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dev->qp = ntb_transport_create_queue(ndev, pdev, &ntb_netdev_handlers);
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dev->qp = ntb_transport_create_queue(ndev, client_dev,
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&ntb_netdev_handlers);
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if (!dev->qp) {
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rc = -EIO;
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goto err;
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@ -372,12 +373,17 @@ err:
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return rc;
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}
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static void ntb_netdev_remove(struct pci_dev *pdev)
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static void ntb_netdev_remove(struct device *client_dev)
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{
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struct ntb_dev *ntb;
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struct net_device *ndev;
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struct pci_dev *pdev;
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struct ntb_netdev *dev;
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bool found = false;
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ntb = dev_ntb(client_dev->parent);
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pdev = ntb->pdev;
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list_for_each_entry(dev, &dev_list, list) {
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if (dev->pdev == pdev) {
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found = true;
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@ -396,7 +402,7 @@ static void ntb_netdev_remove(struct pci_dev *pdev)
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free_netdev(ndev);
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}
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static struct ntb_client ntb_netdev_client = {
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static struct ntb_transport_client ntb_netdev_client = {
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.driver.name = KBUILD_MODNAME,
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.driver.owner = THIS_MODULE,
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.probe = ntb_netdev_probe,
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@ -407,7 +413,7 @@ static int __init ntb_netdev_init_module(void)
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{
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int rc;
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rc = ntb_register_client_dev(KBUILD_MODNAME);
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rc = ntb_transport_register_client_dev(KBUILD_MODNAME);
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if (rc)
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return rc;
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return ntb_transport_register_client(&ntb_netdev_client);
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@ -417,6 +423,6 @@ module_init(ntb_netdev_init_module);
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static void __exit ntb_netdev_exit_module(void)
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{
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ntb_transport_unregister_client(&ntb_netdev_client);
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ntb_unregister_client_dev(KBUILD_MODNAME);
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ntb_transport_unregister_client_dev(KBUILD_MODNAME);
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}
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module_exit(ntb_netdev_exit_module);
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@ -1,7 +1,6 @@
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config NTB
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tristate "Intel Non-Transparent Bridge support"
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menuconfig NTB
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tristate "Non-Transparent Bridge support"
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depends on PCI
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depends on X86
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help
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The PCI-E Non-transparent bridge hardware is a point-to-point PCI-E bus
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connecting 2 systems. When configured, writes to the device's PCI
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@ -11,3 +10,17 @@ config NTB
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If unsure, say N.
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if NTB
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source "drivers/ntb/hw/Kconfig"
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config NTB_TRANSPORT
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tristate "NTB Transport Client"
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help
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This is a transport driver that enables connected systems to exchange
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messages over the ntb hardware. The transport exposes a queue pair api
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to client drivers.
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If unsure, say N.
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endif # NTB
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@ -1,4 +1,2 @@
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obj-$(CONFIG_NTB) += ntb.o
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obj-$(CONFIG_NTB) += ntb_hw_intel.o
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ntb_hw_intel-objs := hw/intel/ntb_hw_intel.o ntb_transport.o
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obj-$(CONFIG_NTB) += ntb.o hw/
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obj-$(CONFIG_NTB_TRANSPORT) += ntb_transport.o
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1
drivers/ntb/hw/Kconfig
Normal file
1
drivers/ntb/hw/Kconfig
Normal file
@ -0,0 +1 @@
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source "drivers/ntb/hw/intel/Kconfig"
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1
drivers/ntb/hw/Makefile
Normal file
1
drivers/ntb/hw/Makefile
Normal file
@ -0,0 +1 @@
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obj-$(CONFIG_NTB_INTEL) += intel/
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7
drivers/ntb/hw/intel/Kconfig
Normal file
7
drivers/ntb/hw/intel/Kconfig
Normal file
@ -0,0 +1,7 @@
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config NTB_INTEL
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tristate "Intel Non-Transparent Bridge support"
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depends on X86_64
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help
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This driver supports Intel NTB on capable Xeon and Atom hardware.
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If unsure, say N.
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1
drivers/ntb/hw/intel/Makefile
Normal file
1
drivers/ntb/hw/intel/Makefile
Normal file
@ -0,0 +1 @@
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obj-$(CONFIG_NTB_INTEL) += ntb_hw_intel.o
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File diff suppressed because it is too large
Load Diff
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2012 Intel Corporation. All rights reserved.
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* Copyright (C) 2015 EMC Corporation. All Rights Reserved.
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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 version 2 of the GNU General Public License as
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@ -13,6 +14,7 @@
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* BSD LICENSE
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*
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* Copyright(c) 2012 Intel Corporation. All rights reserved.
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* Copyright (C) 2015 EMC Corporation. All Rights Reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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@ -45,137 +47,13 @@
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* Contact Information:
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* Jon Mason <jon.mason@intel.com>
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*/
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#include <linux/ntb_transport.h>
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#define NTB_LINK_STATUS_ACTIVE 0x2000
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#define NTB_LINK_SPEED_MASK 0x000f
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#define NTB_LINK_WIDTH_MASK 0x03f0
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#ifndef NTB_HW_INTEL_H
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#define NTB_HW_INTEL_H
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#define SNB_MSIX_CNT 4
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#define SNB_MAX_B2B_SPADS 16
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#define SNB_MAX_COMPAT_SPADS 16
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/* Reserve the uppermost bit for link interrupt */
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#define SNB_MAX_DB_BITS 15
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#define SNB_LINK_DB 15
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#define SNB_DB_BITS_PER_VEC 5
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#define HSX_SPLITBAR_MAX_MW 3
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#define SNB_MAX_MW 2
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#define SNB_ERRATA_MAX_MW 1
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#include <linux/ntb.h>
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#include <linux/pci.h>
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#define SNB_DB_HW_LINK 0x8000
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#define SNB_UNCERRSTS_OFFSET 0x014C
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#define SNB_CORERRSTS_OFFSET 0x0158
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#define SNB_LINK_STATUS_OFFSET 0x01A2
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#define SNB_PCICMD_OFFSET 0x0504
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#define SNB_DEVCTRL_OFFSET 0x0598
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#define SNB_DEVSTS_OFFSET 0x059A
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#define SNB_SLINK_STATUS_OFFSET 0x05A2
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#define SNB_PBAR2LMT_OFFSET 0x0000
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#define SNB_PBAR4LMT_OFFSET 0x0008
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#define SNB_PBAR5LMT_OFFSET 0x000C
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#define SNB_PBAR2XLAT_OFFSET 0x0010
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#define SNB_PBAR4XLAT_OFFSET 0x0018
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#define SNB_PBAR5XLAT_OFFSET 0x001C
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#define SNB_SBAR2LMT_OFFSET 0x0020
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#define SNB_SBAR4LMT_OFFSET 0x0028
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#define SNB_SBAR5LMT_OFFSET 0x002C
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#define SNB_SBAR2XLAT_OFFSET 0x0030
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#define SNB_SBAR4XLAT_OFFSET 0x0038
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#define SNB_SBAR5XLAT_OFFSET 0x003C
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#define SNB_SBAR0BASE_OFFSET 0x0040
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#define SNB_SBAR2BASE_OFFSET 0x0048
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#define SNB_SBAR4BASE_OFFSET 0x0050
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#define SNB_SBAR5BASE_OFFSET 0x0054
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#define SNB_NTBCNTL_OFFSET 0x0058
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#define SNB_SBDF_OFFSET 0x005C
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#define SNB_PDOORBELL_OFFSET 0x0060
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#define SNB_PDBMSK_OFFSET 0x0062
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#define SNB_SDOORBELL_OFFSET 0x0064
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#define SNB_SDBMSK_OFFSET 0x0066
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#define SNB_USMEMMISS_OFFSET 0x0070
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#define SNB_SPAD_OFFSET 0x0080
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#define SNB_SPADSEMA4_OFFSET 0x00c0
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#define SNB_WCCNTRL_OFFSET 0x00e0
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#define SNB_B2B_SPAD_OFFSET 0x0100
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#define SNB_B2B_DOORBELL_OFFSET 0x0140
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#define SNB_B2B_XLAT_OFFSETL 0x0144
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#define SNB_B2B_XLAT_OFFSETU 0x0148
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/*
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* The addresses are setup so the 32bit BARs can function. Thus
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* the addresses are all in 32bit space
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*/
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#define SNB_MBAR01_USD_ADDR 0x000000002100000CULL
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#define SNB_MBAR23_USD_ADDR 0x000000004100000CULL
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#define SNB_MBAR4_USD_ADDR 0x000000008100000CULL
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#define SNB_MBAR5_USD_ADDR 0x00000000A100000CULL
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#define SNB_MBAR01_DSD_ADDR 0x000000002000000CULL
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#define SNB_MBAR23_DSD_ADDR 0x000000004000000CULL
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#define SNB_MBAR4_DSD_ADDR 0x000000008000000CULL
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#define SNB_MBAR5_DSD_ADDR 0x00000000A000000CULL
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#define BWD_MSIX_CNT 34
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#define BWD_MAX_SPADS 16
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#define BWD_MAX_DB_BITS 34
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#define BWD_DB_BITS_PER_VEC 1
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#define BWD_MAX_MW 2
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#define BWD_PCICMD_OFFSET 0xb004
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#define BWD_MBAR23_OFFSET 0xb018
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#define BWD_MBAR45_OFFSET 0xb020
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#define BWD_DEVCTRL_OFFSET 0xb048
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#define BWD_LINK_STATUS_OFFSET 0xb052
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#define BWD_ERRCORSTS_OFFSET 0xb110
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#define BWD_SBAR2XLAT_OFFSET 0x0008
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#define BWD_SBAR4XLAT_OFFSET 0x0010
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#define BWD_PDOORBELL_OFFSET 0x0020
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#define BWD_PDBMSK_OFFSET 0x0028
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#define BWD_NTBCNTL_OFFSET 0x0060
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#define BWD_EBDF_OFFSET 0x0064
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#define BWD_SPAD_OFFSET 0x0080
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#define BWD_SPADSEMA_OFFSET 0x00c0
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#define BWD_STKYSPAD_OFFSET 0x00c4
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#define BWD_PBAR2XLAT_OFFSET 0x8008
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#define BWD_PBAR4XLAT_OFFSET 0x8010
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#define BWD_B2B_DOORBELL_OFFSET 0x8020
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#define BWD_B2B_SPAD_OFFSET 0x8080
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#define BWD_B2B_SPADSEMA_OFFSET 0x80c0
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#define BWD_B2B_STKYSPAD_OFFSET 0x80c4
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#define BWD_MODPHY_PCSREG4 0x1c004
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#define BWD_MODPHY_PCSREG6 0x1c006
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#define BWD_IP_BASE 0xC000
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#define BWD_DESKEWSTS_OFFSET (BWD_IP_BASE + 0x3024)
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#define BWD_LTSSMERRSTS0_OFFSET (BWD_IP_BASE + 0x3180)
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#define BWD_LTSSMSTATEJMP_OFFSET (BWD_IP_BASE + 0x3040)
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#define BWD_IBSTERRRCRVSTS0_OFFSET (BWD_IP_BASE + 0x3324)
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#define BWD_DESKEWSTS_DBERR (1 << 15)
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#define BWD_LTSSMERRSTS0_UNEXPECTEDEI (1 << 20)
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#define BWD_LTSSMSTATEJMP_FORCEDETECT (1 << 2)
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#define BWD_IBIST_ERR_OFLOW 0x7FFF7FFF
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#define NTB_CNTL_CFG_LOCK (1 << 0)
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#define NTB_CNTL_LINK_DISABLE (1 << 1)
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#define NTB_CNTL_S2P_BAR23_SNOOP (1 << 2)
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#define NTB_CNTL_P2S_BAR23_SNOOP (1 << 4)
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||||
#define NTB_CNTL_S2P_BAR4_SNOOP (1 << 6)
|
||||
#define NTB_CNTL_P2S_BAR4_SNOOP (1 << 8)
|
||||
#define NTB_CNTL_S2P_BAR5_SNOOP (1 << 12)
|
||||
#define NTB_CNTL_P2S_BAR5_SNOOP (1 << 14)
|
||||
#define BWD_CNTL_LINK_DOWN (1 << 16)
|
||||
|
||||
#define NTB_PPD_OFFSET 0x00D4
|
||||
#define SNB_PPD_CONN_TYPE 0x0003
|
||||
#define SNB_PPD_DEV_TYPE 0x0010
|
||||
#define SNB_PPD_SPLIT_BAR (1 << 6)
|
||||
#define BWD_PPD_INIT_LINK 0x0008
|
||||
#define BWD_PPD_CONN_TYPE 0x0300
|
||||
#define BWD_PPD_DEV_TYPE 0x1000
|
||||
#define PCI_DEVICE_ID_INTEL_NTB_B2B_JSF 0x3725
|
||||
#define PCI_DEVICE_ID_INTEL_NTB_PS_JSF 0x3726
|
||||
#define PCI_DEVICE_ID_INTEL_NTB_SS_JSF 0x3727
|
||||
@ -190,196 +68,275 @@
|
||||
#define PCI_DEVICE_ID_INTEL_NTB_SS_HSX 0x2F0F
|
||||
#define PCI_DEVICE_ID_INTEL_NTB_B2B_BWD 0x0C4E
|
||||
|
||||
#ifndef readq
|
||||
static inline u64 readq(void __iomem *addr)
|
||||
{
|
||||
return readl(addr) | (((u64) readl(addr + 4)) << 32LL);
|
||||
}
|
||||
#endif
|
||||
/* SNB hardware (and JSF, IVT, HSX) */
|
||||
|
||||
#ifndef writeq
|
||||
static inline void writeq(u64 val, void __iomem *addr)
|
||||
{
|
||||
writel(val & 0xffffffff, addr);
|
||||
writel(val >> 32, addr + 4);
|
||||
}
|
||||
#endif
|
||||
#define SNB_PBAR23LMT_OFFSET 0x0000
|
||||
#define SNB_PBAR45LMT_OFFSET 0x0008
|
||||
#define SNB_PBAR4LMT_OFFSET 0x0008
|
||||
#define SNB_PBAR5LMT_OFFSET 0x000c
|
||||
#define SNB_PBAR23XLAT_OFFSET 0x0010
|
||||
#define SNB_PBAR45XLAT_OFFSET 0x0018
|
||||
#define SNB_PBAR4XLAT_OFFSET 0x0018
|
||||
#define SNB_PBAR5XLAT_OFFSET 0x001c
|
||||
#define SNB_SBAR23LMT_OFFSET 0x0020
|
||||
#define SNB_SBAR45LMT_OFFSET 0x0028
|
||||
#define SNB_SBAR4LMT_OFFSET 0x0028
|
||||
#define SNB_SBAR5LMT_OFFSET 0x002c
|
||||
#define SNB_SBAR23XLAT_OFFSET 0x0030
|
||||
#define SNB_SBAR45XLAT_OFFSET 0x0038
|
||||
#define SNB_SBAR4XLAT_OFFSET 0x0038
|
||||
#define SNB_SBAR5XLAT_OFFSET 0x003c
|
||||
#define SNB_SBAR0BASE_OFFSET 0x0040
|
||||
#define SNB_SBAR23BASE_OFFSET 0x0048
|
||||
#define SNB_SBAR45BASE_OFFSET 0x0050
|
||||
#define SNB_SBAR4BASE_OFFSET 0x0050
|
||||
#define SNB_SBAR5BASE_OFFSET 0x0054
|
||||
#define SNB_SBDF_OFFSET 0x005c
|
||||
#define SNB_NTBCNTL_OFFSET 0x0058
|
||||
#define SNB_PDOORBELL_OFFSET 0x0060
|
||||
#define SNB_PDBMSK_OFFSET 0x0062
|
||||
#define SNB_SDOORBELL_OFFSET 0x0064
|
||||
#define SNB_SDBMSK_OFFSET 0x0066
|
||||
#define SNB_USMEMMISS_OFFSET 0x0070
|
||||
#define SNB_SPAD_OFFSET 0x0080
|
||||
#define SNB_PBAR23SZ_OFFSET 0x00d0
|
||||
#define SNB_PBAR45SZ_OFFSET 0x00d1
|
||||
#define SNB_PBAR4SZ_OFFSET 0x00d1
|
||||
#define SNB_SBAR23SZ_OFFSET 0x00d2
|
||||
#define SNB_SBAR45SZ_OFFSET 0x00d3
|
||||
#define SNB_SBAR4SZ_OFFSET 0x00d3
|
||||
#define SNB_PPD_OFFSET 0x00d4
|
||||
#define SNB_PBAR5SZ_OFFSET 0x00d5
|
||||
#define SNB_SBAR5SZ_OFFSET 0x00d6
|
||||
#define SNB_WCCNTRL_OFFSET 0x00e0
|
||||
#define SNB_UNCERRSTS_OFFSET 0x014c
|
||||
#define SNB_CORERRSTS_OFFSET 0x0158
|
||||
#define SNB_LINK_STATUS_OFFSET 0x01a2
|
||||
#define SNB_SPCICMD_OFFSET 0x0504
|
||||
#define SNB_DEVCTRL_OFFSET 0x0598
|
||||
#define SNB_DEVSTS_OFFSET 0x059a
|
||||
#define SNB_SLINK_STATUS_OFFSET 0x05a2
|
||||
#define SNB_B2B_SPAD_OFFSET 0x0100
|
||||
#define SNB_B2B_DOORBELL_OFFSET 0x0140
|
||||
#define SNB_B2B_XLAT_OFFSETL 0x0144
|
||||
#define SNB_B2B_XLAT_OFFSETU 0x0148
|
||||
#define SNB_PPD_CONN_MASK 0x03
|
||||
#define SNB_PPD_CONN_TRANSPARENT 0x00
|
||||
#define SNB_PPD_CONN_B2B 0x01
|
||||
#define SNB_PPD_CONN_RP 0x02
|
||||
#define SNB_PPD_DEV_MASK 0x10
|
||||
#define SNB_PPD_DEV_USD 0x00
|
||||
#define SNB_PPD_DEV_DSD 0x10
|
||||
#define SNB_PPD_SPLIT_BAR_MASK 0x40
|
||||
|
||||
#define NTB_BAR_MMIO 0
|
||||
#define NTB_BAR_23 2
|
||||
#define NTB_BAR_4 4
|
||||
#define NTB_BAR_5 5
|
||||
#define SNB_PPD_TOPO_MASK (SNB_PPD_CONN_MASK | SNB_PPD_DEV_MASK)
|
||||
#define SNB_PPD_TOPO_PRI_USD (SNB_PPD_CONN_RP | SNB_PPD_DEV_USD)
|
||||
#define SNB_PPD_TOPO_PRI_DSD (SNB_PPD_CONN_RP | SNB_PPD_DEV_DSD)
|
||||
#define SNB_PPD_TOPO_SEC_USD (SNB_PPD_CONN_TRANSPARENT | SNB_PPD_DEV_USD)
|
||||
#define SNB_PPD_TOPO_SEC_DSD (SNB_PPD_CONN_TRANSPARENT | SNB_PPD_DEV_DSD)
|
||||
#define SNB_PPD_TOPO_B2B_USD (SNB_PPD_CONN_B2B | SNB_PPD_DEV_USD)
|
||||
#define SNB_PPD_TOPO_B2B_DSD (SNB_PPD_CONN_B2B | SNB_PPD_DEV_DSD)
|
||||
|
||||
#define NTB_BAR_MASK ((1 << NTB_BAR_MMIO) | (1 << NTB_BAR_23) |\
|
||||
(1 << NTB_BAR_4))
|
||||
#define NTB_SPLITBAR_MASK ((1 << NTB_BAR_MMIO) | (1 << NTB_BAR_23) |\
|
||||
(1 << NTB_BAR_4) | (1 << NTB_BAR_5))
|
||||
#define SNB_MW_COUNT 2
|
||||
#define HSX_SPLIT_BAR_MW_COUNT 3
|
||||
#define SNB_DB_COUNT 15
|
||||
#define SNB_DB_LINK 15
|
||||
#define SNB_DB_LINK_BIT BIT_ULL(SNB_DB_LINK)
|
||||
#define SNB_DB_MSIX_VECTOR_COUNT 4
|
||||
#define SNB_DB_MSIX_VECTOR_SHIFT 5
|
||||
#define SNB_DB_TOTAL_SHIFT 16
|
||||
#define SNB_SPAD_COUNT 16
|
||||
|
||||
#define NTB_HB_TIMEOUT msecs_to_jiffies(1000)
|
||||
/* BWD hardware */
|
||||
|
||||
enum ntb_hw_event {
|
||||
NTB_EVENT_SW_EVENT0 = 0,
|
||||
NTB_EVENT_SW_EVENT1,
|
||||
NTB_EVENT_SW_EVENT2,
|
||||
NTB_EVENT_HW_ERROR,
|
||||
NTB_EVENT_HW_LINK_UP,
|
||||
NTB_EVENT_HW_LINK_DOWN,
|
||||
#define BWD_SBAR2XLAT_OFFSET 0x0008
|
||||
#define BWD_PDOORBELL_OFFSET 0x0020
|
||||
#define BWD_PDBMSK_OFFSET 0x0028
|
||||
#define BWD_NTBCNTL_OFFSET 0x0060
|
||||
#define BWD_SPAD_OFFSET 0x0080
|
||||
#define BWD_PPD_OFFSET 0x00d4
|
||||
#define BWD_PBAR2XLAT_OFFSET 0x8008
|
||||
#define BWD_B2B_DOORBELL_OFFSET 0x8020
|
||||
#define BWD_B2B_SPAD_OFFSET 0x8080
|
||||
#define BWD_SPCICMD_OFFSET 0xb004
|
||||
#define BWD_LINK_STATUS_OFFSET 0xb052
|
||||
#define BWD_ERRCORSTS_OFFSET 0xb110
|
||||
#define BWD_IP_BASE 0xc000
|
||||
#define BWD_DESKEWSTS_OFFSET (BWD_IP_BASE + 0x3024)
|
||||
#define BWD_LTSSMERRSTS0_OFFSET (BWD_IP_BASE + 0x3180)
|
||||
#define BWD_LTSSMSTATEJMP_OFFSET (BWD_IP_BASE + 0x3040)
|
||||
#define BWD_IBSTERRRCRVSTS0_OFFSET (BWD_IP_BASE + 0x3324)
|
||||
#define BWD_MODPHY_PCSREG4 0x1c004
|
||||
#define BWD_MODPHY_PCSREG6 0x1c006
|
||||
|
||||
#define BWD_PPD_INIT_LINK 0x0008
|
||||
#define BWD_PPD_CONN_MASK 0x0300
|
||||
#define BWD_PPD_CONN_TRANSPARENT 0x0000
|
||||
#define BWD_PPD_CONN_B2B 0x0100
|
||||
#define BWD_PPD_CONN_RP 0x0200
|
||||
#define BWD_PPD_DEV_MASK 0x1000
|
||||
#define BWD_PPD_DEV_USD 0x0000
|
||||
#define BWD_PPD_DEV_DSD 0x1000
|
||||
#define BWD_PPD_TOPO_MASK (BWD_PPD_CONN_MASK | BWD_PPD_DEV_MASK)
|
||||
#define BWD_PPD_TOPO_PRI_USD (BWD_PPD_CONN_TRANSPARENT | BWD_PPD_DEV_USD)
|
||||
#define BWD_PPD_TOPO_PRI_DSD (BWD_PPD_CONN_TRANSPARENT | BWD_PPD_DEV_DSD)
|
||||
#define BWD_PPD_TOPO_SEC_USD (BWD_PPD_CONN_RP | BWD_PPD_DEV_USD)
|
||||
#define BWD_PPD_TOPO_SEC_DSD (BWD_PPD_CONN_RP | BWD_PPD_DEV_DSD)
|
||||
#define BWD_PPD_TOPO_B2B_USD (BWD_PPD_CONN_B2B | BWD_PPD_DEV_USD)
|
||||
#define BWD_PPD_TOPO_B2B_DSD (BWD_PPD_CONN_B2B | BWD_PPD_DEV_DSD)
|
||||
|
||||
#define BWD_MW_COUNT 2
|
||||
#define BWD_DB_COUNT 34
|
||||
#define BWD_DB_VALID_MASK (BIT_ULL(BWD_DB_COUNT) - 1)
|
||||
#define BWD_DB_MSIX_VECTOR_COUNT 34
|
||||
#define BWD_DB_MSIX_VECTOR_SHIFT 1
|
||||
#define BWD_DB_TOTAL_SHIFT 34
|
||||
#define BWD_SPAD_COUNT 16
|
||||
|
||||
#define BWD_NTB_CTL_DOWN_BIT BIT(16)
|
||||
#define BWD_NTB_CTL_ACTIVE(x) !(x & BWD_NTB_CTL_DOWN_BIT)
|
||||
|
||||
#define BWD_DESKEWSTS_DBERR BIT(15)
|
||||
#define BWD_LTSSMERRSTS0_UNEXPECTEDEI BIT(20)
|
||||
#define BWD_LTSSMSTATEJMP_FORCEDETECT BIT(2)
|
||||
#define BWD_IBIST_ERR_OFLOW 0x7FFF7FFF
|
||||
|
||||
#define BWD_LINK_HB_TIMEOUT msecs_to_jiffies(1000)
|
||||
#define BWD_LINK_RECOVERY_TIME msecs_to_jiffies(500)
|
||||
|
||||
/* Ntb control and link status */
|
||||
|
||||
#define NTB_CTL_CFG_LOCK BIT(0)
|
||||
#define NTB_CTL_DISABLE BIT(1)
|
||||
#define NTB_CTL_S2P_BAR2_SNOOP BIT(2)
|
||||
#define NTB_CTL_P2S_BAR2_SNOOP BIT(4)
|
||||
#define NTB_CTL_S2P_BAR4_SNOOP BIT(6)
|
||||
#define NTB_CTL_P2S_BAR4_SNOOP BIT(8)
|
||||
#define NTB_CTL_S2P_BAR5_SNOOP BIT(12)
|
||||
#define NTB_CTL_P2S_BAR5_SNOOP BIT(14)
|
||||
|
||||
#define NTB_LNK_STA_ACTIVE_BIT 0x2000
|
||||
#define NTB_LNK_STA_SPEED_MASK 0x000f
|
||||
#define NTB_LNK_STA_WIDTH_MASK 0x03f0
|
||||
#define NTB_LNK_STA_ACTIVE(x) (!!((x) & NTB_LNK_STA_ACTIVE_BIT))
|
||||
#define NTB_LNK_STA_SPEED(x) ((x) & NTB_LNK_STA_SPEED_MASK)
|
||||
#define NTB_LNK_STA_WIDTH(x) (((x) & NTB_LNK_STA_WIDTH_MASK) >> 4)
|
||||
|
||||
/* Use the following addresses for translation between b2b ntb devices in case
|
||||
* the hardware default values are not reliable. */
|
||||
#define SNB_B2B_BAR0_USD_ADDR 0x1000000000000000ull
|
||||
#define SNB_B2B_BAR2_USD_ADDR64 0x2000000000000000ull
|
||||
#define SNB_B2B_BAR4_USD_ADDR64 0x4000000000000000ull
|
||||
#define SNB_B2B_BAR4_USD_ADDR32 0x20000000u
|
||||
#define SNB_B2B_BAR5_USD_ADDR32 0x40000000u
|
||||
#define SNB_B2B_BAR0_DSD_ADDR 0x9000000000000000ull
|
||||
#define SNB_B2B_BAR2_DSD_ADDR64 0xa000000000000000ull
|
||||
#define SNB_B2B_BAR4_DSD_ADDR64 0xc000000000000000ull
|
||||
#define SNB_B2B_BAR4_DSD_ADDR32 0xa0000000u
|
||||
#define SNB_B2B_BAR5_DSD_ADDR32 0xc0000000u
|
||||
|
||||
/* The peer ntb secondary config space is 32KB fixed size */
|
||||
#define SNB_B2B_MIN_SIZE 0x8000
|
||||
|
||||
/* flags to indicate hardware errata */
|
||||
#define NTB_HWERR_SDOORBELL_LOCKUP BIT_ULL(0)
|
||||
#define NTB_HWERR_SB01BASE_LOCKUP BIT_ULL(1)
|
||||
#define NTB_HWERR_B2BDOORBELL_BIT14 BIT_ULL(2)
|
||||
|
||||
/* flags to indicate unsafe api */
|
||||
#define NTB_UNSAFE_DB BIT_ULL(0)
|
||||
#define NTB_UNSAFE_SPAD BIT_ULL(1)
|
||||
|
||||
struct intel_ntb_dev;
|
||||
|
||||
struct intel_ntb_reg {
|
||||
int (*poll_link)(struct intel_ntb_dev *ndev);
|
||||
int (*link_is_up)(struct intel_ntb_dev *ndev);
|
||||
u64 (*db_ioread)(void __iomem *mmio);
|
||||
void (*db_iowrite)(u64 db_bits, void __iomem *mmio);
|
||||
unsigned long ntb_ctl;
|
||||
resource_size_t db_size;
|
||||
int mw_bar[];
|
||||
};
|
||||
|
||||
struct ntb_mw {
|
||||
dma_addr_t phys_addr;
|
||||
void __iomem *vbase;
|
||||
resource_size_t bar_sz;
|
||||
struct intel_ntb_alt_reg {
|
||||
unsigned long db_bell;
|
||||
unsigned long db_mask;
|
||||
unsigned long spad;
|
||||
};
|
||||
|
||||
struct ntb_db_cb {
|
||||
int (*callback)(void *data, int db_num);
|
||||
unsigned int db_num;
|
||||
void *data;
|
||||
struct ntb_device *ndev;
|
||||
struct tasklet_struct irq_work;
|
||||
struct intel_ntb_xlat_reg {
|
||||
unsigned long bar0_base;
|
||||
unsigned long bar2_xlat;
|
||||
unsigned long bar2_limit;
|
||||
};
|
||||
|
||||
#define WA_SNB_ERR 0x00000001
|
||||
struct intel_b2b_addr {
|
||||
phys_addr_t bar0_addr;
|
||||
phys_addr_t bar2_addr64;
|
||||
phys_addr_t bar4_addr64;
|
||||
phys_addr_t bar4_addr32;
|
||||
phys_addr_t bar5_addr32;
|
||||
};
|
||||
|
||||
struct ntb_device {
|
||||
struct pci_dev *pdev;
|
||||
struct msix_entry *msix_entries;
|
||||
void __iomem *reg_base;
|
||||
struct ntb_mw *mw;
|
||||
struct {
|
||||
unsigned char max_mw;
|
||||
unsigned char max_spads;
|
||||
unsigned char max_db_bits;
|
||||
unsigned char msix_cnt;
|
||||
} limits;
|
||||
struct {
|
||||
void __iomem *ldb;
|
||||
void __iomem *ldb_mask;
|
||||
void __iomem *rdb;
|
||||
void __iomem *bar2_xlat;
|
||||
void __iomem *bar4_xlat;
|
||||
void __iomem *bar5_xlat;
|
||||
void __iomem *spad_write;
|
||||
void __iomem *spad_read;
|
||||
void __iomem *lnk_cntl;
|
||||
void __iomem *lnk_stat;
|
||||
void __iomem *spci_cmd;
|
||||
} reg_ofs;
|
||||
struct ntb_transport *ntb_transport;
|
||||
void (*event_cb)(void *handle, enum ntb_hw_event event);
|
||||
struct intel_ntb_vec {
|
||||
struct intel_ntb_dev *ndev;
|
||||
int num;
|
||||
};
|
||||
|
||||
struct ntb_db_cb *db_cb;
|
||||
unsigned char hw_type;
|
||||
unsigned char conn_type;
|
||||
unsigned char dev_type;
|
||||
unsigned char num_msix;
|
||||
unsigned char bits_per_vector;
|
||||
unsigned char max_cbs;
|
||||
unsigned char link_width;
|
||||
unsigned char link_speed;
|
||||
unsigned char link_status;
|
||||
unsigned char split_bar;
|
||||
struct intel_ntb_dev {
|
||||
struct ntb_dev ntb;
|
||||
|
||||
/* offset of peer bar0 in b2b bar */
|
||||
unsigned long b2b_off;
|
||||
/* mw idx used to access peer bar0 */
|
||||
unsigned int b2b_idx;
|
||||
|
||||
/* BAR45 is split into BAR4 and BAR5 */
|
||||
bool bar4_split;
|
||||
|
||||
u32 ntb_ctl;
|
||||
u32 lnk_sta;
|
||||
|
||||
unsigned char mw_count;
|
||||
unsigned char spad_count;
|
||||
unsigned char db_count;
|
||||
unsigned char db_vec_count;
|
||||
unsigned char db_vec_shift;
|
||||
|
||||
u64 db_valid_mask;
|
||||
u64 db_link_mask;
|
||||
u64 db_mask;
|
||||
|
||||
/* synchronize rmw access of db_mask and hw reg */
|
||||
spinlock_t db_mask_lock;
|
||||
|
||||
struct msix_entry *msix;
|
||||
struct intel_ntb_vec *vec;
|
||||
|
||||
const struct intel_ntb_reg *reg;
|
||||
const struct intel_ntb_alt_reg *self_reg;
|
||||
const struct intel_ntb_alt_reg *peer_reg;
|
||||
const struct intel_ntb_xlat_reg *xlat_reg;
|
||||
void __iomem *self_mmio;
|
||||
void __iomem *peer_mmio;
|
||||
phys_addr_t peer_addr;
|
||||
|
||||
struct delayed_work hb_timer;
|
||||
unsigned long last_ts;
|
||||
struct delayed_work hb_timer;
|
||||
|
||||
struct delayed_work lr_timer;
|
||||
unsigned long hwerr_flags;
|
||||
unsigned long unsafe_flags;
|
||||
unsigned long unsafe_flags_ignore;
|
||||
|
||||
struct dentry *debugfs_dir;
|
||||
struct dentry *debugfs_info;
|
||||
|
||||
unsigned int wa_flags;
|
||||
};
|
||||
|
||||
/**
|
||||
* ntb_max_cbs() - return the max callbacks
|
||||
* @ndev: pointer to ntb_device instance
|
||||
*
|
||||
* Given the ntb pointer, return the maximum number of callbacks
|
||||
*
|
||||
* RETURNS: the maximum number of callbacks
|
||||
*/
|
||||
static inline unsigned char ntb_max_cbs(struct ntb_device *ndev)
|
||||
{
|
||||
return ndev->max_cbs;
|
||||
}
|
||||
#define ndev_pdev(ndev) ((ndev)->ntb.pdev)
|
||||
#define ndev_name(ndev) pci_name(ndev_pdev(ndev))
|
||||
#define ndev_dev(ndev) (&ndev_pdev(ndev)->dev)
|
||||
#define ntb_ndev(ntb) container_of(ntb, struct intel_ntb_dev, ntb)
|
||||
#define hb_ndev(work) container_of(work, struct intel_ntb_dev, hb_timer.work)
|
||||
|
||||
/**
|
||||
* ntb_max_mw() - return the max number of memory windows
|
||||
* @ndev: pointer to ntb_device instance
|
||||
*
|
||||
* Given the ntb pointer, return the maximum number of memory windows
|
||||
*
|
||||
* RETURNS: the maximum number of memory windows
|
||||
*/
|
||||
static inline unsigned char ntb_max_mw(struct ntb_device *ndev)
|
||||
{
|
||||
return ndev->limits.max_mw;
|
||||
}
|
||||
|
||||
/**
|
||||
* ntb_hw_link_status() - return the hardware link status
|
||||
* @ndev: pointer to ntb_device instance
|
||||
*
|
||||
* Returns true if the hardware is connected to the remote system
|
||||
*
|
||||
* RETURNS: true or false based on the hardware link state
|
||||
*/
|
||||
static inline bool ntb_hw_link_status(struct ntb_device *ndev)
|
||||
{
|
||||
return ndev->link_status == NTB_LINK_UP;
|
||||
}
|
||||
|
||||
/**
|
||||
* ntb_query_pdev() - return the pci_dev pointer
|
||||
* @ndev: pointer to ntb_device instance
|
||||
*
|
||||
* Given the ntb pointer, return the pci_dev pointer for the NTB hardware device
|
||||
*
|
||||
* RETURNS: a pointer to the ntb pci_dev
|
||||
*/
|
||||
static inline struct pci_dev *ntb_query_pdev(struct ntb_device *ndev)
|
||||
{
|
||||
return ndev->pdev;
|
||||
}
|
||||
|
||||
/**
|
||||
* ntb_query_debugfs() - return the debugfs pointer
|
||||
* @ndev: pointer to ntb_device instance
|
||||
*
|
||||
* Given the ntb pointer, return the debugfs directory pointer for the NTB
|
||||
* hardware device
|
||||
*
|
||||
* RETURNS: a pointer to the debugfs directory
|
||||
*/
|
||||
static inline struct dentry *ntb_query_debugfs(struct ntb_device *ndev)
|
||||
{
|
||||
return ndev->debugfs_dir;
|
||||
}
|
||||
|
||||
struct ntb_device *ntb_register_transport(struct pci_dev *pdev,
|
||||
void *transport);
|
||||
void ntb_unregister_transport(struct ntb_device *ndev);
|
||||
void ntb_set_mw_addr(struct ntb_device *ndev, unsigned int mw, u64 addr);
|
||||
int ntb_register_db_callback(struct ntb_device *ndev, unsigned int idx,
|
||||
void *data, int (*db_cb_func)(void *data,
|
||||
int db_num));
|
||||
void ntb_unregister_db_callback(struct ntb_device *ndev, unsigned int idx);
|
||||
int ntb_register_event_callback(struct ntb_device *ndev,
|
||||
void (*event_cb_func)(void *handle,
|
||||
enum ntb_hw_event event));
|
||||
void ntb_unregister_event_callback(struct ntb_device *ndev);
|
||||
int ntb_get_max_spads(struct ntb_device *ndev);
|
||||
int ntb_write_local_spad(struct ntb_device *ndev, unsigned int idx, u32 val);
|
||||
int ntb_read_local_spad(struct ntb_device *ndev, unsigned int idx, u32 *val);
|
||||
int ntb_write_remote_spad(struct ntb_device *ndev, unsigned int idx, u32 val);
|
||||
int ntb_read_remote_spad(struct ntb_device *ndev, unsigned int idx, u32 *val);
|
||||
resource_size_t ntb_get_mw_base(struct ntb_device *ndev, unsigned int mw);
|
||||
void __iomem *ntb_get_mw_vbase(struct ntb_device *ndev, unsigned int mw);
|
||||
u64 ntb_get_mw_size(struct ntb_device *ndev, unsigned int mw);
|
||||
void ntb_ring_doorbell(struct ntb_device *ndev, unsigned int idx);
|
||||
void *ntb_find_transport(struct pci_dev *pdev);
|
||||
|
||||
int ntb_transport_init(struct pci_dev *pdev);
|
||||
void ntb_transport_free(void *transport);
|
||||
#endif
|
||||
|
||||
File diff suppressed because it is too large
Load Diff
@ -5,6 +5,7 @@
|
||||
* GPL LICENSE SUMMARY
|
||||
*
|
||||
* Copyright(c) 2012 Intel Corporation. All rights reserved.
|
||||
* Copyright (C) 2015 EMC Corporation. All Rights Reserved.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of version 2 of the GNU General Public License as
|
||||
@ -13,6 +14,7 @@
|
||||
* BSD LICENSE
|
||||
*
|
||||
* Copyright(c) 2012 Intel Corporation. All rights reserved.
|
||||
* Copyright (C) 2015 EMC Corporation. All Rights Reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
@ -40,7 +42,7 @@
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
* Intel PCIe NTB Linux driver
|
||||
* PCIe NTB Transport Linux driver
|
||||
*
|
||||
* Contact Information:
|
||||
* Jon Mason <jon.mason@intel.com>
|
||||
@ -48,21 +50,16 @@
|
||||
|
||||
struct ntb_transport_qp;
|
||||
|
||||
struct ntb_client {
|
||||
struct ntb_transport_client {
|
||||
struct device_driver driver;
|
||||
int (*probe)(struct pci_dev *pdev);
|
||||
void (*remove)(struct pci_dev *pdev);
|
||||
int (*probe)(struct device *client_dev);
|
||||
void (*remove)(struct device *client_dev);
|
||||
};
|
||||
|
||||
enum {
|
||||
NTB_LINK_DOWN = 0,
|
||||
NTB_LINK_UP,
|
||||
};
|
||||
|
||||
int ntb_transport_register_client(struct ntb_client *drvr);
|
||||
void ntb_transport_unregister_client(struct ntb_client *drvr);
|
||||
int ntb_register_client_dev(char *device_name);
|
||||
void ntb_unregister_client_dev(char *device_name);
|
||||
int ntb_transport_register_client(struct ntb_transport_client *drvr);
|
||||
void ntb_transport_unregister_client(struct ntb_transport_client *drvr);
|
||||
int ntb_transport_register_client_dev(char *device_name);
|
||||
void ntb_transport_unregister_client_dev(char *device_name);
|
||||
|
||||
struct ntb_queue_handlers {
|
||||
void (*rx_handler)(struct ntb_transport_qp *qp, void *qp_data,
|
||||
@ -75,7 +72,7 @@ struct ntb_queue_handlers {
|
||||
unsigned char ntb_transport_qp_num(struct ntb_transport_qp *qp);
|
||||
unsigned int ntb_transport_max_size(struct ntb_transport_qp *qp);
|
||||
struct ntb_transport_qp *
|
||||
ntb_transport_create_queue(void *data, struct pci_dev *pdev,
|
||||
ntb_transport_create_queue(void *data, struct device *client_dev,
|
||||
const struct ntb_queue_handlers *handlers);
|
||||
void ntb_transport_free_queue(struct ntb_transport_qp *qp);
|
||||
int ntb_transport_rx_enqueue(struct ntb_transport_qp *qp, void *cb, void *data,
|
||||
|
||||
Loading…
Reference in New Issue
Block a user