diff options
Diffstat (limited to 'drivers/infiniband/hw/hns/hns_roce_main.c')
| -rw-r--r-- | drivers/infiniband/hw/hns/hns_roce_main.c | 1142 |
1 files changed, 1142 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c b/drivers/infiniband/hw/hns/hns_roce_main.c new file mode 100644 index 000000000000..f64f0dde9a88 --- /dev/null +++ b/drivers/infiniband/hw/hns/hns_roce_main.c @@ -0,0 +1,1142 @@ +/* + * Copyright (c) 2016 Hisilicon Limited. + * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - 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. + */ +#include <linux/acpi.h> +#include <linux/of_platform.h> +#include <rdma/ib_addr.h> +#include <rdma/ib_smi.h> +#include <rdma/ib_user_verbs.h> +#include "hns_roce_common.h" +#include "hns_roce_device.h" +#include "hns_roce_user.h" +#include "hns_roce_hem.h" + +/** + * hns_roce_addrconf_ifid_eui48 - Get default gid. + * @eui: eui. + * @vlan_id: gid + * @dev: net device + * Description: + * MAC convert to GID + * gid[0..7] = fe80 0000 0000 0000 + * gid[8] = mac[0] ^ 2 + * gid[9] = mac[1] + * gid[10] = mac[2] + * gid[11] = ff (VLAN ID high byte (4 MS bits)) + * gid[12] = fe (VLAN ID low byte) + * gid[13] = mac[3] + * gid[14] = mac[4] + * gid[15] = mac[5] + */ +static void hns_roce_addrconf_ifid_eui48(u8 *eui, u16 vlan_id, + struct net_device *dev) +{ + memcpy(eui, dev->dev_addr, 3); + memcpy(eui + 5, dev->dev_addr + 3, 3); + if (vlan_id < 0x1000) { + eui[3] = vlan_id >> 8; + eui[4] = vlan_id & 0xff; + } else { + eui[3] = 0xff; + eui[4] = 0xfe; + } + eui[0] ^= 2; +} + +static void hns_roce_make_default_gid(struct net_device *dev, union ib_gid *gid) +{ + memset(gid, 0, sizeof(*gid)); + gid->raw[0] = 0xFE; + gid->raw[1] = 0x80; + hns_roce_addrconf_ifid_eui48(&gid->raw[8], 0xffff, dev); +} + +/** + * hns_get_gid_index - Get gid index. + * @hr_dev: pointer to structure hns_roce_dev. + * @port: port, value range: 0 ~ MAX + * @gid_index: gid_index, value range: 0 ~ MAX + * Description: + * N ports shared gids, allocation method as follow: + * GID[0][0], GID[1][0],.....GID[N - 1][0], + * GID[0][0], GID[1][0],.....GID[N - 1][0], + * And so on + */ +int hns_get_gid_index(struct hns_roce_dev *hr_dev, u8 port, int gid_index) +{ + return gid_index * hr_dev->caps.num_ports + port; +} + +static int hns_roce_set_gid(struct hns_roce_dev *hr_dev, u8 port, int gid_index, + union ib_gid *gid) +{ + struct device *dev = &hr_dev->pdev->dev; + u8 gid_idx = 0; + + if (gid_index >= hr_dev->caps.gid_table_len[port]) { + dev_err(dev, "gid_index %d illegal, port %d gid range: 0~%d\n", + gid_index, port, hr_dev->caps.gid_table_len[port] - 1); + return -EINVAL; + } + + gid_idx = hns_get_gid_index(hr_dev, port, gid_index); + + if (!memcmp(gid, &hr_dev->iboe.gid_table[gid_idx], sizeof(*gid))) + return -EINVAL; + + memcpy(&hr_dev->iboe.gid_table[gid_idx], gid, sizeof(*gid)); + + hr_dev->hw->set_gid(hr_dev, port, gid_index, gid); + + return 0; +} + +static void hns_roce_set_mac(struct hns_roce_dev *hr_dev, u8 port, u8 *addr) +{ + u8 phy_port; + u32 i = 0; + + if (!memcmp(hr_dev->dev_addr[port], addr, MAC_ADDR_OCTET_NUM)) + return; + + for (i = 0; i < MAC_ADDR_OCTET_NUM; i++) + hr_dev->dev_addr[port][i] = addr[i]; + + phy_port = hr_dev->iboe.phy_port[port]; + hr_dev->hw->set_mac(hr_dev, phy_port, addr); +} + +static void hns_roce_set_mtu(struct hns_roce_dev *hr_dev, u8 port, int mtu) +{ + u8 phy_port = hr_dev->iboe.phy_port[port]; + enum ib_mtu tmp; + + tmp = iboe_get_mtu(mtu); + if (!tmp) + tmp = IB_MTU_256; + + hr_dev->hw->set_mtu(hr_dev, phy_port, tmp); +} + +static void hns_roce_update_gids(struct hns_roce_dev *hr_dev, int port) +{ + struct ib_event event; + + /* Refresh gid in ib_cache */ + event.device = &hr_dev->ib_dev; + event.element.port_num = port + 1; + event.event = IB_EVENT_GID_CHANGE; + ib_dispatch_event(&event); +} + +static int handle_en_event(struct hns_roce_dev *hr_dev, u8 port, + unsigned long event) +{ + struct device *dev = &hr_dev->pdev->dev; + struct net_device *netdev; + unsigned long flags; + union ib_gid gid; + int ret = 0; + + netdev = hr_dev->iboe.netdevs[port]; + if (!netdev) { + dev_err(dev, "port(%d) can't find netdev\n", port); + return -ENODEV; + } + + spin_lock_irqsave(&hr_dev->iboe.lock, flags); + + switch (event) { + case NETDEV_UP: + case NETDEV_CHANGE: + case NETDEV_REGISTER: + case NETDEV_CHANGEADDR: + hns_roce_set_mac(hr_dev, port, netdev->dev_addr); + hns_roce_make_default_gid(netdev, &gid); + ret = hns_roce_set_gid(hr_dev, port, 0, &gid); + if (!ret) + hns_roce_update_gids(hr_dev, port); + break; + case NETDEV_DOWN: + /* + * In v1 engine, only support all ports closed together. + */ + break; + default: + dev_dbg(dev, "NETDEV event = 0x%x!\n", (u32)(event)); + break; + } + + spin_unlock_irqrestore(&hr_dev->iboe.lock, flags); + return ret; +} + +static int hns_roce_netdev_event(struct notifier_block *self, + unsigned long event, void *ptr) +{ + struct net_device *dev = netdev_notifier_info_to_dev(ptr); + struct hns_roce_ib_iboe *iboe = NULL; + struct hns_roce_dev *hr_dev = NULL; + u8 port = 0; + int ret = 0; + + hr_dev = container_of(self, struct hns_roce_dev, iboe.nb); + iboe = &hr_dev->iboe; + + for (port = 0; port < hr_dev->caps.num_ports; port++) { + if (dev == iboe->netdevs[port]) { + ret = handle_en_event(hr_dev, port, event); + if (ret) + return NOTIFY_DONE; + break; + } + } + + return NOTIFY_DONE; +} + +static void hns_roce_addr_event(int event, struct net_device *event_netdev, + struct hns_roce_dev *hr_dev, union ib_gid *gid) +{ + struct hns_roce_ib_iboe *iboe = NULL; + int gid_table_len = 0; + unsigned long flags; + union ib_gid zgid; + u8 gid_idx = 0; + u8 port = 0; + int i = 0; + int free; + struct net_device *real_dev = rdma_vlan_dev_real_dev(event_netdev) ? + rdma_vlan_dev_real_dev(event_netdev) : + event_netdev; + + if (event != NETDEV_UP && event != NETDEV_DOWN) + return; + + iboe = &hr_dev->iboe; + while (port < hr_dev->caps.num_ports) { + if (real_dev == iboe->netdevs[port]) + break; + port++; + } + + if (port >= hr_dev->caps.num_ports) { + dev_dbg(&hr_dev->pdev->dev, "can't find netdev\n"); + return; + } + + memset(zgid.raw, 0, sizeof(zgid.raw)); + free = -1; + gid_table_len = hr_dev->caps.gid_table_len[port]; + + spin_lock_irqsave(&hr_dev->iboe.lock, flags); + + for (i = 0; i < gid_table_len; i++) { + gid_idx = hns_get_gid_index(hr_dev, port, i); + if (!memcmp(gid->raw, iboe->gid_table[gid_idx].raw, + sizeof(gid->raw))) + break; + if (free < 0 && !memcmp(zgid.raw, + iboe->gid_table[gid_idx].raw, sizeof(zgid.raw))) + free = i; + } + + if (i >= gid_table_len) { + if (free < 0) { + spin_unlock_irqrestore(&hr_dev->iboe.lock, flags); + dev_dbg(&hr_dev->pdev->dev, + "gid_index overflow, port(%d)\n", port); + return; + } + if (!hns_roce_set_gid(hr_dev, port, free, gid)) + hns_roce_update_gids(hr_dev, port); + } else if (event == NETDEV_DOWN) { + if (!hns_roce_set_gid(hr_dev, port, i, &zgid)) + hns_roce_update_gids(hr_dev, port); + } + + spin_unlock_irqrestore(&hr_dev->iboe.lock, flags); +} + +static int hns_roce_inet_event(struct notifier_block *self, unsigned long event, + void *ptr) +{ + struct in_ifaddr *ifa = ptr; + struct hns_roce_dev *hr_dev; + struct net_device *dev = ifa->ifa_dev->dev; + union ib_gid gid; + + ipv6_addr_set_v4mapped(ifa->ifa_address, (struct in6_addr *)&gid); + + hr_dev = container_of(self, struct hns_roce_dev, iboe.nb_inet); + + hns_roce_addr_event(event, dev, hr_dev, &gid); + + return NOTIFY_DONE; +} + +static int hns_roce_setup_mtu_gids(struct hns_roce_dev *hr_dev) +{ + struct in_ifaddr *ifa_list = NULL; + union ib_gid gid = {{0} }; + u32 ipaddr = 0; + int index = 0; + int ret = 0; + u8 i = 0; + + for (i = 0; i < hr_dev->caps.num_ports; i++) { + hns_roce_set_mtu(hr_dev, i, + ib_mtu_enum_to_int(hr_dev->caps.max_mtu)); + hns_roce_set_mac(hr_dev, i, hr_dev->iboe.netdevs[i]->dev_addr); + + if (hr_dev->iboe.netdevs[i]->ip_ptr) { + ifa_list = hr_dev->iboe.netdevs[i]->ip_ptr->ifa_list; + index = 1; + while (ifa_list) { + ipaddr = ifa_list->ifa_address; + ipv6_addr_set_v4mapped(ipaddr, + (struct in6_addr *)&gid); + ret = hns_roce_set_gid(hr_dev, i, index, &gid); + if (ret) + break; + index++; + ifa_list = ifa_list->ifa_next; + } + hns_roce_update_gids(hr_dev, i); + } + } + + return ret; +} + +static int hns_roce_query_device(struct ib_device *ib_dev, + struct ib_device_attr *props, + struct ib_udata *uhw) +{ + struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev); + + memset(props, 0, sizeof(*props)); + + props->sys_image_guid = hr_dev->sys_image_guid; + props->max_mr_size = (u64)(~(0ULL)); + props->page_size_cap = hr_dev->caps.page_size_cap; + props->vendor_id = hr_dev->vendor_id; + props->vendor_part_id = hr_dev->vendor_part_id; + props->hw_ver = hr_dev->hw_rev; + props->max_qp = hr_dev->caps.num_qps; + props->max_qp_wr = hr_dev->caps.max_wqes; + props->device_cap_flags = IB_DEVICE_PORT_ACTIVE_EVENT | + IB_DEVICE_RC_RNR_NAK_GEN | + IB_DEVICE_LOCAL_DMA_LKEY; + props->max_sge = hr_dev->caps.max_sq_sg; + props->max_sge_rd = 1; + props->max_cq = hr_dev->caps.num_cqs; + props->max_cqe = hr_dev->caps.max_cqes; + props->max_mr = hr_dev->caps.num_mtpts; + props->max_pd = hr_dev->caps.num_pds; + props->max_qp_rd_atom = hr_dev->caps.max_qp_dest_rdma; + props->max_qp_init_rd_atom = hr_dev->caps.max_qp_init_rdma; + props->atomic_cap = IB_ATOMIC_NONE; + props->max_pkeys = 1; + props->local_ca_ack_delay = hr_dev->caps.local_ca_ack_delay; + + return 0; +} + +static int hns_roce_query_port(struct ib_device *ib_dev, u8 port_num, + struct ib_port_attr *props) +{ + struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev); + struct device *dev = &hr_dev->pdev->dev; + struct net_device *net_dev; + unsigned long flags; + enum ib_mtu mtu; + u8 port; + + assert(port_num > 0); + port = port_num - 1; + + memset(props, 0, sizeof(*props)); + + props->max_mtu = hr_dev->caps.max_mtu; + props->gid_tbl_len = hr_dev->caps.gid_table_len[port]; + props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP | + IB_PORT_VENDOR_CLASS_SUP | + IB_PORT_BOOT_MGMT_SUP; + props->max_msg_sz = HNS_ROCE_MAX_MSG_LEN; + props->pkey_tbl_len = 1; + props->active_width = IB_WIDTH_4X; + props->active_speed = 1; + + spin_lock_irqsave(&hr_dev->iboe.lock, flags); + + net_dev = hr_dev->iboe.netdevs[port]; + if (!net_dev) { + spin_unlock_irqrestore(&hr_dev->iboe.lock, flags); + dev_err(dev, "find netdev %d failed!\r\n", port); + return -EINVAL; + } + + mtu = iboe_get_mtu(net_dev->mtu); + props->active_mtu = mtu ? min(props->max_mtu, mtu) : IB_MTU_256; + props->state = (netif_running(net_dev) && netif_carrier_ok(net_dev)) ? + IB_PORT_ACTIVE : IB_PORT_DOWN; + props->phys_state = (props->state == IB_PORT_ACTIVE) ? 5 : 3; + + spin_unlock_irqrestore(&hr_dev->iboe.lock, flags); + + return 0; +} + +static enum rdma_link_layer hns_roce_get_link_layer(struct ib_device *device, + u8 port_num) +{ + return IB_LINK_LAYER_ETHERNET; +} + +static int hns_roce_query_gid(struct ib_device *ib_dev, u8 port_num, int index, + union ib_gid *gid) +{ + struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev); + struct device *dev = &hr_dev->pdev->dev; + u8 gid_idx = 0; + u8 port; + + if (port_num < 1 || port_num > hr_dev->caps.num_ports || + index >= hr_dev->caps.gid_table_len[port_num - 1]) { + dev_err(dev, + "port_num %d index %d illegal! correct range: port_num 1~%d index 0~%d!\n", + port_num, index, hr_dev->caps.num_ports, + hr_dev->caps.gid_table_len[port_num - 1] - 1); + return -EINVAL; + } + + port = port_num - 1; + gid_idx = hns_get_gid_index(hr_dev, port, index); + if (gid_idx >= HNS_ROCE_MAX_GID_NUM) { + dev_err(dev, "port_num %d index %d illegal! total gid num %d!\n", + port_num, index, HNS_ROCE_MAX_GID_NUM); + return -EINVAL; + } + + memcpy(gid->raw, hr_dev->iboe.gid_table[gid_idx].raw, + HNS_ROCE_GID_SIZE); + + return 0; +} + +static int hns_roce_query_pkey(struct ib_device *ib_dev, u8 port, u16 index, + u16 *pkey) +{ + *pkey = PKEY_ID; + + return 0; +} + +static int hns_roce_modify_device(struct ib_device *ib_dev, int mask, + struct ib_device_modify *props) +{ + unsigned long flags; + + if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) + return -EOPNOTSUPP; + + if (mask & IB_DEVICE_MODIFY_NODE_DESC) { + spin_lock_irqsave(&to_hr_dev(ib_dev)->sm_lock, flags); + memcpy(ib_dev->node_desc, props->node_desc, NODE_DESC_SIZE); + spin_unlock_irqrestore(&to_hr_dev(ib_dev)->sm_lock, flags); + } + + return 0; +} + +static int hns_roce_modify_port(struct ib_device *ib_dev, u8 port_num, int mask, + struct ib_port_modify *props) +{ + return 0; +} + +static struct ib_ucontext *hns_roce_alloc_ucontext(struct ib_device *ib_dev, + struct ib_udata *udata) +{ + int ret = 0; + struct hns_roce_ucontext *context; + struct hns_roce_ib_alloc_ucontext_resp resp; + struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev); + + resp.qp_tab_size = hr_dev->caps.num_qps; + + context = kmalloc(sizeof(*context), GFP_KERNEL); + if (!context) + return ERR_PTR(-ENOMEM); + + ret = hns_roce_uar_alloc(hr_dev, &context->uar); + if (ret) + goto error_fail_uar_alloc; + + ret = ib_copy_to_udata(udata, &resp, sizeof(resp)); + if (ret) + goto error_fail_copy_to_udata; + + return &context->ibucontext; + +error_fail_copy_to_udata: + hns_roce_uar_free(hr_dev, &context->uar); + +error_fail_uar_alloc: + kfree(context); + + return ERR_PTR(ret); +} + +static int hns_roce_dealloc_ucontext(struct ib_ucontext *ibcontext) +{ + struct hns_roce_ucontext *context = to_hr_ucontext(ibcontext); + + hns_roce_uar_free(to_hr_dev(ibcontext->device), &context->uar); + kfree(context); + + return 0; +} + +static int hns_roce_mmap(struct ib_ucontext *context, + struct vm_area_struct *vma) +{ + if (((vma->vm_end - vma->vm_start) % PAGE_SIZE) != 0) + return -EINVAL; + + if (vma->vm_pgoff == 0) { + vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); + if (io_remap_pfn_range(vma, vma->vm_start, + to_hr_ucontext(context)->uar.pfn, + PAGE_SIZE, vma->vm_page_prot)) + return -EAGAIN; + + } else { + return -EINVAL; + } + + return 0; +} + +static int hns_roce_port_immutable(struct ib_device *ib_dev, u8 port_num, + struct ib_port_immutable *immutable) +{ + struct ib_port_attr attr; + int ret; + + ret = hns_roce_query_port(ib_dev, port_num, &attr); + if (ret) + return ret; + + immutable->pkey_tbl_len = attr.pkey_tbl_len; + immutable->gid_tbl_len = attr.gid_tbl_len; + + immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE; + immutable->max_mad_size = IB_MGMT_MAD_SIZE; + + return 0; +} + +static void hns_roce_unregister_device(struct hns_roce_dev *hr_dev) +{ + struct hns_roce_ib_iboe *iboe = &hr_dev->iboe; + + unregister_inetaddr_notifier(&iboe->nb_inet); + unregister_netdevice_notifier(&iboe->nb); + ib_unregister_device(&hr_dev->ib_dev); +} + +static int hns_roce_register_device(struct hns_roce_dev *hr_dev) +{ + int ret; + struct hns_roce_ib_iboe *iboe = NULL; + struct ib_device *ib_dev = NULL; + struct device *dev = &hr_dev->pdev->dev; + + iboe = &hr_dev->iboe; + + ib_dev = &hr_dev->ib_dev; + strlcpy(ib_dev->name, "hisi_%d", IB_DEVICE_NAME_MAX); + + ib_dev->owner = THIS_MODULE; + ib_dev->node_type = RDMA_NODE_IB_CA; + ib_dev->dma_device = dev; + + ib_dev->phys_port_cnt = hr_dev->caps.num_ports; + ib_dev->local_dma_lkey = hr_dev->caps.reserved_lkey; + ib_dev->num_comp_vectors = hr_dev->caps.num_comp_vectors; + ib_dev->uverbs_abi_ver = 1; + ib_dev->uverbs_cmd_mask = + (1ULL << IB_USER_VERBS_CMD_GET_CONTEXT) | + (1ULL << IB_USER_VERBS_CMD_QUERY_DEVICE) | + (1ULL << IB_USER_VERBS_CMD_QUERY_PORT) | + (1ULL << IB_USER_VERBS_CMD_ALLOC_PD) | + (1ULL << IB_USER_VERBS_CMD_DEALLOC_PD) | + (1ULL << IB_USER_VERBS_CMD_REG_MR) | + (1ULL << IB_USER_VERBS_CMD_DEREG_MR) | + (1ULL << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | + (1ULL << IB_USER_VERBS_CMD_CREATE_CQ) | + (1ULL << IB_USER_VERBS_CMD_DESTROY_CQ) | + (1ULL << IB_USER_VERBS_CMD_CREATE_QP) | + (1ULL << IB_USER_VERBS_CMD_MODIFY_QP) | + (1ULL << IB_USER_VERBS_CMD_QUERY_QP) | + (1ULL << IB_USER_VERBS_CMD_DESTROY_QP); + + /* HCA||device||port */ + ib_dev->modify_device = hns_roce_modify_device; + ib_dev->query_device = hns_roce_query_device; + ib_dev->query_port = hns_roce_query_port; + ib_dev->modify_port = hns_roce_modify_port; + ib_dev->get_link_layer = hns_roce_get_link_layer; + ib_dev->query_gid = hns_roce_query_gid; + ib_dev->query_pkey = hns_roce_query_pkey; + ib_dev->alloc_ucontext = hns_roce_alloc_ucontext; + ib_dev->dealloc_ucontext = hns_roce_dealloc_ucontext; + ib_dev->mmap = hns_roce_mmap; + + /* PD */ + ib_dev->alloc_pd = hns_roce_alloc_pd; + ib_dev->dealloc_pd = hns_roce_dealloc_pd; + + /* AH */ + ib_dev->create_ah = hns_roce_create_ah; + ib_dev->query_ah = hns_roce_query_ah; + ib_dev->destroy_ah = hns_roce_destroy_ah; + + /* QP */ + ib_dev->create_qp = hns_roce_create_qp; + ib_dev->modify_qp = hns_roce_modify_qp; + ib_dev->query_qp = hr_dev->hw->query_qp; + ib_dev->destroy_qp = hr_dev->hw->destroy_qp; + ib_dev->post_send = hr_dev->hw->post_send; + ib_dev->post_recv = hr_dev->hw->post_recv; + + /* CQ */ + ib_dev->create_cq = hns_roce_ib_create_cq; + ib_dev->destroy_cq = hns_roce_ib_destroy_cq; + ib_dev->req_notify_cq = hr_dev->hw->req_notify_cq; + ib_dev->poll_cq = hr_dev->hw->poll_cq; + + /* MR */ + ib_dev->get_dma_mr = hns_roce_get_dma_mr; + ib_dev->reg_user_mr = hns_roce_reg_user_mr; + ib_dev->dereg_mr = hns_roce_dereg_mr; + + /* OTHERS */ + ib_dev->get_port_immutable = hns_roce_port_immutable; + + ret = ib_register_device(ib_dev, NULL); + if (ret) { + dev_err(dev, "ib_register_device failed!\n"); + return ret; + } + + ret = hns_roce_setup_mtu_gids(hr_dev); + if (ret) { + dev_err(dev, "roce_setup_mtu_gids failed!\n"); + goto error_failed_setup_mtu_gids; + } + + spin_lock_init(&iboe->lock); + + iboe->nb.notifier_call = hns_roce_netdev_event; + ret = register_netdevice_notifier(&iboe->nb); + if (ret) { + dev_err(dev, "register_netdevice_notifier failed!\n"); + goto error_failed_setup_mtu_gids; + } + + iboe->nb_inet.notifier_call = hns_roce_inet_event; + ret = register_inetaddr_notifier(&iboe->nb_inet); + if (ret) { + dev_err(dev, "register inet addr notifier failed!\n"); + goto error_failed_register_inetaddr_notifier; + } + + return 0; + +error_failed_register_inetaddr_notifier: + unregister_netdevice_notifier(&iboe->nb); + +error_failed_setup_mtu_gids: + ib_unregister_device(ib_dev); + + return ret; +} + +static const struct of_device_id hns_roce_of_match[] = { + { .compatible = "hisilicon,hns-roce-v1", .data = &hns_roce_hw_v1, }, + {}, +}; +MODULE_DEVICE_TABLE(of, hns_roce_of_match); + +static const struct acpi_device_id hns_roce_acpi_match[] = { + { "HISI00D1", (kernel_ulong_t)&hns_roce_hw_v1 }, + {}, +}; +MODULE_DEVICE_TABLE(acpi, hns_roce_acpi_match); + +static int hns_roce_node_match(struct device *dev, void *fwnode) +{ + return dev->fwnode == fwnode; +} + +static struct +platform_device *hns_roce_find_pdev(struct fwnode_handle *fwnode) +{ + struct device *dev; + + /* get the 'device'corresponding to matching 'fwnode' */ + dev = bus_find_device(&platform_bus_type, NULL, + fwnode, hns_roce_node_match); + /* get the platform device */ + return dev ? to_platform_device(dev) : NULL; +} + +static int hns_roce_get_cfg(struct hns_roce_dev *hr_dev) +{ + int i; + int ret; + u8 phy_port; + int port_cnt = 0; + struct device *dev = &hr_dev->pdev->dev; + struct device_node *net_node; + struct net_device *netdev = NULL; + struct platform_device *pdev = NULL; + struct resource *res; + + /* check if we are compatible with the underlying SoC */ + if (dev_of_node(dev)) { + const struct of_device_id *of_id; + + of_id = of_match_node(hns_roce_of_match, dev->of_node); + if (!of_id) { + dev_err(dev, "device is not compatible!\n"); + return -ENXIO; + } + hr_dev->hw = (struct hns_roce_hw *)of_id->data; + if (!hr_dev->hw) { + dev_err(dev, "couldn't get H/W specific DT data!\n"); + return -ENXIO; + } + } else if (is_acpi_device_node(dev->fwnode)) { + const struct acpi_device_id *acpi_id; + + acpi_id = acpi_match_device(hns_roce_acpi_match, dev); + if (!acpi_id) { + dev_err(dev, "device is not compatible!\n"); + return -ENXIO; + } + hr_dev->hw = (struct hns_roce_hw *) acpi_id->driver_data; + if (!hr_dev->hw) { + dev_err(dev, "couldn't get H/W specific ACPI data!\n"); + return -ENXIO; + } + } else { + dev_err(dev, "can't read compatibility data from DT or ACPI\n"); + return -ENXIO; + } + + /* get the mapped register base address */ + res = platform_get_resource(hr_dev->pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(dev, "memory resource not found!\n"); + return -EINVAL; + } + hr_dev->reg_base = devm_ioremap_resource(dev, res); + if (IS_ERR(hr_dev->reg_base)) + return PTR_ERR(hr_dev->reg_base); + + /* get the RoCE associated ethernet ports or netdevices */ + for (i = 0; i < HNS_ROCE_MAX_PORTS; i++) { + if (dev_of_node(dev)) { + net_node = of_parse_phandle(dev->of_node, "eth-handle", + i); + if (!net_node) + continue; + pdev = of_find_device_by_node(net_node); + } else if (is_acpi_device_node(dev->fwnode)) { + struct acpi_reference_args args; + struct fwnode_handle *fwnode; + + ret = acpi_node_get_property_reference(dev->fwnode, + "eth-handle", + i, &args); + if (ret) + continue; + fwnode = acpi_fwnode_handle(args.adev); + pdev = hns_roce_find_pdev(fwnode); + } else { + dev_err(dev, "cannot read data from DT or ACPI\n"); + return -ENXIO; + } + + if (pdev) { + netdev = platform_get_drvdata(pdev); + phy_port = (u8)i; + if (netdev) { + hr_dev->iboe.netdevs[port_cnt] = netdev; + hr_dev->iboe.phy_port[port_cnt] = phy_port; + } else { + dev_err(dev, "no netdev found with pdev %s\n", + pdev->name); + return -ENODEV; + } + port_cnt++; + } + } + + if (port_cnt == 0) { + dev_err(dev, "unable to get eth-handle for available ports!\n"); + return -EINVAL; + } + + hr_dev->caps.num_ports = port_cnt; + + /* cmd issue mode: 0 is poll, 1 is event */ + hr_dev->cmd_mod = 1; + hr_dev->loop_idc = 0; + + /* read the interrupt names from the DT or ACPI */ + ret = device_property_read_string_array(dev, "interrupt-names", + hr_dev->irq_names, + HNS_ROCE_MAX_IRQ_NUM); + if (ret < 0) { + dev_err(dev, "couldn't get interrupt names from DT or ACPI!\n"); + return ret; + } + + /* fetch the interrupt numbers */ + for (i = 0; i < HNS_ROCE_MAX_IRQ_NUM; i++) { + hr_dev->irq[i] = platform_get_irq(hr_dev->pdev, i); + if (hr_dev->irq[i] <= 0) { + dev_err(dev, "platform get of irq[=%d] failed!\n", i); + return -EINVAL; + } + } + + return 0; +} + +static int hns_roce_init_hem(struct hns_roce_dev *hr_dev) +{ + int ret; + struct device *dev = &hr_dev->pdev->dev; + + ret = hns_roce_init_hem_table(hr_dev, &hr_dev->mr_table.mtt_table, + HEM_TYPE_MTT, hr_dev->caps.mtt_entry_sz, + hr_dev->caps.num_mtt_segs, 1); + if (ret) { + dev_err(dev, "Failed to init MTT context memory, aborting.\n"); + return ret; + } + + ret = hns_roce_init_hem_table(hr_dev, &hr_dev->mr_table.mtpt_table, + HEM_TYPE_MTPT, hr_dev->caps.mtpt_entry_sz, + hr_dev->caps.num_mtpts, 1); + if (ret) { + dev_err(dev, "Failed to init MTPT context memory, aborting.\n"); + goto err_unmap_mtt; + } + + ret = hns_roce_init_hem_table(hr_dev, &hr_dev->qp_table.qp_table, + HEM_TYPE_QPC, hr_dev->caps.qpc_entry_sz, + hr_dev->caps.num_qps, 1); + if (ret) { + dev_err(dev, "Failed to init QP context memory, aborting.\n"); + goto err_unmap_dmpt; + } + + ret = hns_roce_init_hem_table(hr_dev, &hr_dev->qp_table.irrl_table, + HEM_TYPE_IRRL, + hr_dev->caps.irrl_entry_sz * + hr_dev->caps.max_qp_init_rdma, + hr_dev->caps.num_qps, 1); + if (ret) { + dev_err(dev, "Failed to init irrl_table memory, aborting.\n"); + goto err_unmap_qp; + } + + ret = hns_roce_init_hem_table(hr_dev, &hr_dev->cq_table.table, + HEM_TYPE_CQC, hr_dev->caps.cqc_entry_sz, + hr_dev->caps.num_cqs, 1); + if (ret) { + dev_err(dev, "Failed to init CQ context memory, aborting.\n"); + goto err_unmap_irrl; + } + + return 0; + +err_unmap_irrl: + hns_roce_cleanup_hem_table(hr_dev, &hr_dev->qp_table.irrl_table); + +err_unmap_qp: + hns_roce_cleanup_hem_table(hr_dev, &hr_dev->qp_table.qp_table); + +err_unmap_dmpt: + hns_roce_cleanup_hem_table(hr_dev, &hr_dev->mr_table.mtpt_table); + +err_unmap_mtt: + hns_roce_cleanup_hem_table(hr_dev, &hr_dev->mr_table.mtt_table); + + return ret; +} + +/** +* hns_roce_setup_hca - setup host channel adapter +* @hr_dev: pointer to hns roce device +* Return : int +*/ +static int hns_roce_setup_hca(struct hns_roce_dev *hr_dev) +{ + int ret; + struct device *dev = &hr_dev->pdev->dev; + + spin_lock_init(&hr_dev->sm_lock); + spin_lock_init(&hr_dev->cq_db_lock); + spin_lock_init(&hr_dev->bt_cmd_lock); + + ret = hns_roce_init_uar_table(hr_dev); + if (ret) { + dev_err(dev, "Failed to initialize uar table. aborting\n"); + return ret; + } + + ret = hns_roce_uar_alloc(hr_dev, &hr_dev->priv_uar); + if (ret) { + dev_err(dev, "Failed to allocate priv_uar.\n"); + goto err_uar_table_free; + } + + ret = hns_roce_init_pd_table(hr_dev); + if (ret) { + dev_err(dev, "Failed to init protected domain table.\n"); + goto err_uar_alloc_free; + } + + ret = hns_roce_init_mr_table(hr_dev); + if (ret) { + dev_err(dev, "Failed to init memory region table.\n"); + goto err_pd_table_free; + } + + ret = hns_roce_init_cq_table(hr_dev); + if (ret) { + dev_err(dev, "Failed to init completion queue table.\n"); + goto err_mr_table_free; + } + + ret = hns_roce_init_qp_table(hr_dev); + if (ret) { + dev_err(dev, "Failed to init queue pair table.\n"); + goto err_cq_table_free; + } + + return 0; + +err_cq_table_free: + hns_roce_cleanup_cq_table(hr_dev); + +err_mr_table_free: + hns_roce_cleanup_mr_table(hr_dev); + +err_pd_table_free: + hns_roce_cleanup_pd_table(hr_dev); + +err_uar_alloc_free: + hns_roce_uar_free(hr_dev, &hr_dev->priv_uar); + +err_uar_table_free: + hns_roce_cleanup_uar_table(hr_dev); + return ret; +} + +/** +* hns_roce_probe - RoCE driver entrance +* @pdev: pointer to platform device +* Return : int +* +*/ +static int hns_roce_probe(struct platform_device *pdev) +{ + int ret; + struct hns_roce_dev *hr_dev; + struct device *dev = &pdev->dev; + + hr_dev = (struct hns_roce_dev *)ib_alloc_device(sizeof(*hr_dev)); + if (!hr_dev) + return -ENOMEM; + + memset((u8 *)hr_dev + sizeof(struct ib_device), 0, + sizeof(struct hns_roce_dev) - sizeof(struct ib_device)); + + hr_dev->pdev = pdev; + platform_set_drvdata(pdev, hr_dev); + + if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64ULL)) && + dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32ULL))) { + dev_err(dev, "Not usable DMA addressing mode\n"); + ret = -EIO; + goto error_failed_get_cfg; + } + + ret = hns_roce_get_cfg(hr_dev); + if (ret) { + dev_err(dev, "Get Configuration failed!\n"); + goto error_failed_get_cfg; + } + + ret = hr_dev->hw->reset(hr_dev, true); + if (ret) { + dev_err(dev, "Reset RoCE engine failed!\n"); + goto error_failed_get_cfg; + } + + hr_dev->hw->hw_profile(hr_dev); + + ret = hns_roce_cmd_init(hr_dev); + if (ret) { + dev_err(dev, "cmd init failed!\n"); + goto error_failed_cmd_init; + } + + ret = hns_roce_init_eq_table(hr_dev); + if (ret) { + dev_err(dev, "eq init failed!\n"); + goto error_failed_eq_table; + } + + if (hr_dev->cmd_mod) { + ret = hns_roce_cmd_use_events(hr_dev); + if (ret) { + dev_err(dev, "Switch to event-driven cmd failed!\n"); + goto error_failed_use_event; + } + } + + ret = hns_roce_init_hem(hr_dev); + if (ret) { + dev_err(dev, "init HEM(Hardware Entry Memory) failed!\n"); + goto error_failed_init_hem; + } + + ret = hns_roce_setup_hca(hr_dev); + if (ret) { + dev_err(dev, "setup hca failed!\n"); + goto error_failed_setup_hca; + } + + ret = hr_dev->hw->hw_init(hr_dev); + if (ret) { + dev_err(dev, "hw_init failed!\n"); + goto error_failed_engine_init; + } + + ret = hns_roce_register_device(hr_dev); + if (ret) + goto error_failed_register_device; + + return 0; + +error_failed_register_device: + hr_dev->hw->hw_exit(hr_dev); + +error_failed_engine_init: + hns_roce_cleanup_bitmap(hr_dev); + +error_failed_setup_hca: + hns_roce_cleanup_hem(hr_dev); + +error_failed_init_hem: + if (hr_dev->cmd_mod) + hns_roce_cmd_use_polling(hr_dev); + +error_failed_use_event: + hns_roce_cleanup_eq_table(hr_dev); + +error_failed_eq_table: + hns_roce_cmd_cleanup(hr_dev); + +error_failed_cmd_init: + ret = hr_dev->hw->reset(hr_dev, false); + if (ret) + dev_err(&hr_dev->pdev->dev, "roce_engine reset fail\n"); + +error_failed_get_cfg: + ib_dealloc_device(&hr_dev->ib_dev); + + return ret; +} + +/** +* hns_roce_remove - remove RoCE device +* @pdev: pointer to platform device +*/ +static int hns_roce_remove(struct platform_device *pdev) +{ + struct hns_roce_dev *hr_dev = platform_get_drvdata(pdev); + + hns_roce_unregister_device(hr_dev); + hr_dev->hw->hw_exit(hr_dev); + hns_roce_cleanup_bitmap(hr_dev); + hns_roce_cleanup_hem(hr_dev); + + if (hr_dev->cmd_mod) + hns_roce_cmd_use_polling(hr_dev); + + hns_roce_cleanup_eq_table(hr_dev); + hns_roce_cmd_cleanup(hr_dev); + hr_dev->hw->reset(hr_dev, false); + + ib_dealloc_device(&hr_dev->ib_dev); + + return 0; +} + +static struct platform_driver hns_roce_driver = { + .probe = hns_roce_probe, + .remove = hns_roce_remove, + .driver = { + .name = DRV_NAME, + .of_match_table = hns_roce_of_match, + .acpi_match_table = ACPI_PTR(hns_roce_acpi_match), + }, +}; + +module_platform_driver(hns_roce_driver); + +MODULE_LICENSE("Dual BSD/GPL"); +MODULE_AUTHOR("Wei Hu <xavier.huwei@huawei.com>"); +MODULE_AUTHOR("Nenglong Zhao <zhaonenglong@hisilicon.com>"); +MODULE_AUTHOR("Lijun Ou <oulijun@huawei.com>"); +MODULE_DESCRIPTION("HNS RoCE Driver"); |