/* * Copyright (C) 2015-2017 Netronome Systems, Inc. * * This software is dual licensed under the GNU General License Version 2, * June 1991 as shown in the file COPYING in the top-level directory of this * source tree or the BSD 2-Clause License provided below. You have the * option to license this software under the complete terms of either license. * * The BSD 2-Clause License: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * 1. Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * 2. Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ /* * nfp_main.c * Authors: Jakub Kicinski * Alejandro Lucero * Jason McMullan * Rolf Neugebauer */ #include #include #include #include #include #include #include #include #include "nfpcore/nfp.h" #include "nfpcore/nfp_cpp.h" #include "nfpcore/nfp_nffw.h" #include "nfpcore/nfp_nsp.h" #include "nfpcore/nfp6000_pcie.h" #include "nfp_app.h" #include "nfp_main.h" #include "nfp_net.h" static const char nfp_driver_name[] = "nfp"; const char nfp_driver_version[] = VERMAGIC_STRING; static const struct pci_device_id nfp_pci_device_ids[] = { { PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP6000, PCI_VENDOR_ID_NETRONOME, PCI_ANY_ID, PCI_ANY_ID, 0, }, { PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP4000, PCI_VENDOR_ID_NETRONOME, PCI_ANY_ID, PCI_ANY_ID, 0, }, { 0, } /* Required last entry. */ }; MODULE_DEVICE_TABLE(pci, nfp_pci_device_ids); static bool nfp_board_ready(struct nfp_pf *pf) { const char *cp; long state; int err; cp = nfp_hwinfo_lookup(pf->hwinfo, "board.state"); if (!cp) return false; err = kstrtol(cp, 0, &state); if (err < 0) return false; return state == 15; } static int nfp_pf_board_state_wait(struct nfp_pf *pf) { const unsigned long wait_until = jiffies + 10 * HZ; while (!nfp_board_ready(pf)) { if (time_is_before_eq_jiffies(wait_until)) { nfp_err(pf->cpp, "NFP board initialization timeout\n"); return -EINVAL; } nfp_info(pf->cpp, "waiting for board initialization\n"); if (msleep_interruptible(500)) return -ERESTARTSYS; /* Refresh cached information */ kfree(pf->hwinfo); pf->hwinfo = nfp_hwinfo_read(pf->cpp); } return 0; } static int nfp_pcie_sriov_read_nfd_limit(struct nfp_pf *pf) { int err; pf->limit_vfs = nfp_rtsym_read_le(pf->rtbl, "nfd_vf_cfg_max_vfs", &err); if (!err) return pci_sriov_set_totalvfs(pf->pdev, pf->limit_vfs); pf->limit_vfs = ~0; pci_sriov_set_totalvfs(pf->pdev, 0); /* 0 is unset */ /* Allow any setting for backwards compatibility if symbol not found */ if (err == -ENOENT) return 0; nfp_warn(pf->cpp, "Warning: VF limit read failed: %d\n", err); return err; } static int nfp_pcie_sriov_enable(struct pci_dev *pdev, int num_vfs) { #ifdef CONFIG_PCI_IOV struct nfp_pf *pf = pci_get_drvdata(pdev); int err; if (num_vfs > pf->limit_vfs) { nfp_info(pf->cpp, "Firmware limits number of VFs to %u\n", pf->limit_vfs); return -EINVAL; } err = pci_enable_sriov(pdev, num_vfs); if (err) { dev_warn(&pdev->dev, "Failed to enable PCI SR-IOV: %d\n", err); return err; } mutex_lock(&pf->lock); err = nfp_app_sriov_enable(pf->app, num_vfs); if (err) { dev_warn(&pdev->dev, "App specific PCI SR-IOV configuration failed: %d\n", err); goto err_sriov_disable; } pf->num_vfs = num_vfs; dev_dbg(&pdev->dev, "Created %d VFs.\n", pf->num_vfs); mutex_unlock(&pf->lock); return num_vfs; err_sriov_disable: mutex_unlock(&pf->lock); pci_disable_sriov(pdev); return err; #endif return 0; } static int nfp_pcie_sriov_disable(struct pci_dev *pdev) { #ifdef CONFIG_PCI_IOV struct nfp_pf *pf = pci_get_drvdata(pdev); mutex_lock(&pf->lock); /* If the VFs are assigned we cannot shut down SR-IOV without * causing issues, so just leave the hardware available but * disabled */ if (pci_vfs_assigned(pdev)) { dev_warn(&pdev->dev, "Disabling while VFs assigned - VFs will not be deallocated\n"); mutex_unlock(&pf->lock); return -EPERM; } nfp_app_sriov_disable(pf->app); pf->num_vfs = 0; mutex_unlock(&pf->lock); pci_disable_sriov(pdev); dev_dbg(&pdev->dev, "Removed VFs.\n"); #endif return 0; } static int nfp_pcie_sriov_configure(struct pci_dev *pdev, int num_vfs) { if (num_vfs == 0) return nfp_pcie_sriov_disable(pdev); else return nfp_pcie_sriov_enable(pdev, num_vfs); } static const struct firmware * nfp_net_fw_request(struct pci_dev *pdev, struct nfp_pf *pf, const char *name) { const struct firmware *fw = NULL; int err; err = request_firmware_direct(&fw, name, &pdev->dev); nfp_info(pf->cpp, " %s: %s\n", name, err ? "not found" : "found, loading..."); if (err) return NULL; return fw; } /** * nfp_net_fw_find() - Find the correct firmware image for netdev mode * @pdev: PCI Device structure * @pf: NFP PF Device structure * * Return: firmware if found and requested successfully. */ static const struct firmware * nfp_net_fw_find(struct pci_dev *pdev, struct nfp_pf *pf) { struct nfp_eth_table_port *port; const struct firmware *fw; const char *fw_model; char fw_name[256]; const u8 *serial; u16 interface; int spc, i, j; nfp_info(pf->cpp, "Looking for firmware file in order of priority:\n"); /* First try to find a firmware image specific for this device */ interface = nfp_cpp_interface(pf->cpp); nfp_cpp_serial(pf->cpp, &serial); sprintf(fw_name, "netronome/serial-%pMF-%02hhx-%02hhx.nffw", serial, interface >> 8, interface & 0xff); fw = nfp_net_fw_request(pdev, pf, fw_name); if (fw) return fw; /* Then try the PCI name */ sprintf(fw_name, "netronome/pci-%s.nffw", pci_name(pdev)); fw = nfp_net_fw_request(pdev, pf, fw_name); if (fw) return fw; /* Finally try the card type and media */ if (!pf->eth_tbl) { dev_err(&pdev->dev, "Error: can't identify media config\n"); return NULL; } fw_model = nfp_hwinfo_lookup(pf->hwinfo, "assembly.partno"); if (!fw_model) { dev_err(&pdev->dev, "Error: can't read part number\n"); return NULL; } spc = ARRAY_SIZE(fw_name); spc -= snprintf(fw_name, spc, "netronome/nic_%s", fw_model); for (i = 0; spc > 0 && i < pf->eth_tbl->count; i += j) { port = &pf->eth_tbl->ports[i]; j = 1; while (i + j < pf->eth_tbl->count && port->speed == port[j].speed) j++; spc -= snprintf(&fw_name[ARRAY_SIZE(fw_name) - spc], spc, "_%dx%d", j, port->speed / 1000); } if (spc <= 0) return NULL; spc -= snprintf(&fw_name[ARRAY_SIZE(fw_name) - spc], spc, ".nffw"); if (spc <= 0) return NULL; return nfp_net_fw_request(pdev, pf, fw_name); } /** * nfp_net_fw_load() - Load the firmware image * @pdev: PCI Device structure * @pf: NFP PF Device structure * @nsp: NFP SP handle * * Return: -ERRNO, 0 for no firmware loaded, 1 for firmware loaded */ static int nfp_fw_load(struct pci_dev *pdev, struct nfp_pf *pf, struct nfp_nsp *nsp) { const struct firmware *fw; u16 interface; int err; interface = nfp_cpp_interface(pf->cpp); if (NFP_CPP_INTERFACE_UNIT_of(interface) != 0) { /* Only Unit 0 should reset or load firmware */ dev_info(&pdev->dev, "Firmware will be loaded by partner\n"); return 0; } fw = nfp_net_fw_find(pdev, pf); if (!fw) return 0; dev_info(&pdev->dev, "Soft-reset, loading FW image\n"); err = nfp_nsp_device_soft_reset(nsp); if (err < 0) { dev_err(&pdev->dev, "Failed to soft reset the NFP: %d\n", err); goto exit_release_fw; } err = nfp_nsp_load_fw(nsp, fw); if (err < 0) { dev_err(&pdev->dev, "FW loading failed: %d\n", err); goto exit_release_fw; } dev_info(&pdev->dev, "Finished loading FW image\n"); exit_release_fw: release_firmware(fw); return err < 0 ? err : 1; } static void nfp_nsp_init_ports(struct pci_dev *pdev, struct nfp_pf *pf, struct nfp_nsp *nsp) { bool needs_reinit = false; int i; pf->eth_tbl = __nfp_eth_read_ports(pf->cpp, nsp); if (!pf->eth_tbl) return; if (!nfp_nsp_has_mac_reinit(nsp)) return; for (i = 0; i < pf->eth_tbl->count; i++) needs_reinit |= pf->eth_tbl->ports[i].override_changed; if (!needs_reinit) return; kfree(pf->eth_tbl); if (nfp_nsp_mac_reinit(nsp)) dev_warn(&pdev->dev, "MAC reinit failed\n"); pf->eth_tbl = __nfp_eth_read_ports(pf->cpp, nsp); } static int nfp_nsp_init(struct pci_dev *pdev, struct nfp_pf *pf) { struct nfp_nsp *nsp; int err; err = nfp_resource_wait(pf->cpp, NFP_RESOURCE_NSP, 30); if (err) return err; nsp = nfp_nsp_open(pf->cpp); if (IS_ERR(nsp)) { err = PTR_ERR(nsp); dev_err(&pdev->dev, "Failed to access the NSP: %d\n", err); return err; } err = nfp_nsp_wait(nsp); if (err < 0) goto exit_close_nsp; nfp_nsp_init_ports(pdev, pf, nsp); pf->nspi = __nfp_nsp_identify(nsp); if (pf->nspi) dev_info(&pdev->dev, "BSP: %s\n", pf->nspi->version); err = nfp_fw_load(pdev, pf, nsp); if (err < 0) { kfree(pf->nspi); kfree(pf->eth_tbl); dev_err(&pdev->dev, "Failed to load FW\n"); goto exit_close_nsp; } pf->fw_loaded = !!err; err = 0; exit_close_nsp: nfp_nsp_close(nsp); return err; } static void nfp_fw_unload(struct nfp_pf *pf) { struct nfp_nsp *nsp; int err; nsp = nfp_nsp_open(pf->cpp); if (IS_ERR(nsp)) { nfp_err(pf->cpp, "Reset failed, can't open NSP\n"); return; } err = nfp_nsp_device_soft_reset(nsp); if (err < 0) dev_warn(&pf->pdev->dev, "Couldn't unload firmware: %d\n", err); else dev_info(&pf->pdev->dev, "Firmware safely unloaded\n"); nfp_nsp_close(nsp); } static int nfp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *pci_id) { struct devlink *devlink; struct nfp_pf *pf; int err; err = pci_enable_device(pdev); if (err < 0) return err; pci_set_master(pdev); err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(NFP_NET_MAX_DMA_BITS)); if (err) goto err_pci_disable; err = pci_request_regions(pdev, nfp_driver_name); if (err < 0) { dev_err(&pdev->dev, "Unable to reserve pci resources.\n"); goto err_pci_disable; } devlink = devlink_alloc(&nfp_devlink_ops, sizeof(*pf)); if (!devlink) { err = -ENOMEM; goto err_rel_regions; } pf = devlink_priv(devlink); INIT_LIST_HEAD(&pf->vnics); INIT_LIST_HEAD(&pf->ports); mutex_init(&pf->lock); pci_set_drvdata(pdev, pf); pf->pdev = pdev; pf->wq = alloc_workqueue("nfp-%s", 0, 2, pci_name(pdev)); if (!pf->wq) { err = -ENOMEM; goto err_pci_priv_unset; } pf->cpp = nfp_cpp_from_nfp6000_pcie(pdev); if (IS_ERR_OR_NULL(pf->cpp)) { err = PTR_ERR(pf->cpp); if (err >= 0) err = -ENOMEM; goto err_disable_msix; } pf->hwinfo = nfp_hwinfo_read(pf->cpp); dev_info(&pdev->dev, "Assembly: %s%s%s-%s CPLD: %s\n", nfp_hwinfo_lookup(pf->hwinfo, "assembly.vendor"), nfp_hwinfo_lookup(pf->hwinfo, "assembly.partno"), nfp_hwinfo_lookup(pf->hwinfo, "assembly.serial"), nfp_hwinfo_lookup(pf->hwinfo, "assembly.revision"), nfp_hwinfo_lookup(pf->hwinfo, "cpld.version")); err = nfp_pf_board_state_wait(pf); if (err) goto err_hwinfo_free; err = devlink_register(devlink, &pdev->dev); if (err) goto err_hwinfo_free; err = nfp_nsp_init(pdev, pf); if (err) goto err_devlink_unreg; pf->mip = nfp_mip_open(pf->cpp); pf->rtbl = __nfp_rtsym_table_read(pf->cpp, pf->mip); pf->dump_flag = NFP_DUMP_NSP_DIAG; pf->dumpspec = nfp_net_dump_load_dumpspec(pf->cpp, pf->rtbl); err = nfp_pcie_sriov_read_nfd_limit(pf); if (err) goto err_fw_unload; pf->num_vfs = pci_num_vf(pdev); if (pf->num_vfs > pf->limit_vfs) { dev_err(&pdev->dev, "Error: %d VFs already enabled, but loaded FW can only support %d\n", pf->num_vfs, pf->limit_vfs); goto err_fw_unload; } err = nfp_net_pci_probe(pf); if (err) goto err_sriov_unlimit; err = nfp_hwmon_register(pf); if (err) { dev_err(&pdev->dev, "Failed to register hwmon info\n"); goto err_net_remove; } return 0; err_net_remove: nfp_net_pci_remove(pf); err_sriov_unlimit: pci_sriov_set_totalvfs(pf->pdev, 0); err_fw_unload: kfree(pf->rtbl); nfp_mip_close(pf->mip); if (pf->fw_loaded) nfp_fw_unload(pf); kfree(pf->eth_tbl); kfree(pf->nspi); vfree(pf->dumpspec); err_devlink_unreg: devlink_unregister(devlink); err_hwinfo_free: kfree(pf->hwinfo); nfp_cpp_free(pf->cpp); err_disable_msix: destroy_workqueue(pf->wq); err_pci_priv_unset: pci_set_drvdata(pdev, NULL); mutex_destroy(&pf->lock); devlink_free(devlink); err_rel_regions: pci_release_regions(pdev); err_pci_disable: pci_disable_device(pdev); return err; } static void nfp_pci_remove(struct pci_dev *pdev) { struct nfp_pf *pf = pci_get_drvdata(pdev); struct devlink *devlink; nfp_hwmon_unregister(pf); devlink = priv_to_devlink(pf); nfp_net_pci_remove(pf); nfp_pcie_sriov_disable(pdev); pci_sriov_set_totalvfs(pf->pdev, 0); devlink_unregister(devlink); vfree(pf->dumpspec); kfree(pf->rtbl); nfp_mip_close(pf->mip); if (pf->fw_loaded) nfp_fw_unload(pf); destroy_workqueue(pf->wq); pci_set_drvdata(pdev, NULL); kfree(pf->hwinfo); nfp_cpp_free(pf->cpp); kfree(pf->eth_tbl); kfree(pf->nspi); mutex_destroy(&pf->lock); devlink_free(devlink); pci_release_regions(pdev); pci_disable_device(pdev); } static struct pci_driver nfp_pci_driver = { .name = nfp_driver_name, .id_table = nfp_pci_device_ids, .probe = nfp_pci_probe, .remove = nfp_pci_remove, .sriov_configure = nfp_pcie_sriov_configure, }; static int __init nfp_main_init(void) { int err; pr_info("%s: NFP PCIe Driver, Copyright (C) 2014-2017 Netronome Systems\n", nfp_driver_name); nfp_net_debugfs_create(); err = pci_register_driver(&nfp_pci_driver); if (err < 0) goto err_destroy_debugfs; err = pci_register_driver(&nfp_netvf_pci_driver); if (err) goto err_unreg_pf; return err; err_unreg_pf: pci_unregister_driver(&nfp_pci_driver); err_destroy_debugfs: nfp_net_debugfs_destroy(); return err; } static void __exit nfp_main_exit(void) { pci_unregister_driver(&nfp_netvf_pci_driver); pci_unregister_driver(&nfp_pci_driver); nfp_net_debugfs_destroy(); } module_init(nfp_main_init); module_exit(nfp_main_exit); MODULE_FIRMWARE("netronome/nic_AMDA0081-0001_1x40.nffw"); MODULE_FIRMWARE("netronome/nic_AMDA0081-0001_4x10.nffw"); MODULE_FIRMWARE("netronome/nic_AMDA0096-0001_2x10.nffw"); MODULE_FIRMWARE("netronome/nic_AMDA0097-0001_2x40.nffw"); MODULE_FIRMWARE("netronome/nic_AMDA0097-0001_4x10_1x40.nffw"); MODULE_FIRMWARE("netronome/nic_AMDA0097-0001_8x10.nffw"); MODULE_FIRMWARE("netronome/nic_AMDA0099-0001_2x10.nffw"); MODULE_FIRMWARE("netronome/nic_AMDA0099-0001_2x25.nffw"); MODULE_AUTHOR("Netronome Systems "); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("The Netronome Flow Processor (NFP) driver.");