| /* |
| * linux/drivers/net/ehea/ehea_main.c |
| * |
| * eHEA ethernet device driver for IBM eServer System p |
| * |
| * (C) Copyright IBM Corp. 2006 |
| * |
| * Authors: |
| * Christoph Raisch <raisch@de.ibm.com> |
| * Jan-Bernd Themann <themann@de.ibm.com> |
| * Thomas Klein <tklein@de.ibm.com> |
| * |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2, or (at your option) |
| * any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| */ |
| |
| #include <linux/in.h> |
| #include <linux/ip.h> |
| #include <linux/tcp.h> |
| #include <linux/udp.h> |
| #include <linux/if.h> |
| #include <linux/list.h> |
| #include <linux/if_ether.h> |
| #include <linux/notifier.h> |
| #include <linux/reboot.h> |
| #include <linux/memory.h> |
| #include <asm/kexec.h> |
| #include <linux/mutex.h> |
| |
| #include <net/ip.h> |
| |
| #include "ehea.h" |
| #include "ehea_qmr.h" |
| #include "ehea_phyp.h" |
| |
| |
| MODULE_LICENSE("GPL"); |
| MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>"); |
| MODULE_DESCRIPTION("IBM eServer HEA Driver"); |
| MODULE_VERSION(DRV_VERSION); |
| |
| |
| static int msg_level = -1; |
| static int rq1_entries = EHEA_DEF_ENTRIES_RQ1; |
| static int rq2_entries = EHEA_DEF_ENTRIES_RQ2; |
| static int rq3_entries = EHEA_DEF_ENTRIES_RQ3; |
| static int sq_entries = EHEA_DEF_ENTRIES_SQ; |
| static int use_mcs; |
| static int use_lro; |
| static int lro_max_aggr = EHEA_LRO_MAX_AGGR; |
| static int num_tx_qps = EHEA_NUM_TX_QP; |
| static int prop_carrier_state; |
| |
| module_param(msg_level, int, 0); |
| module_param(rq1_entries, int, 0); |
| module_param(rq2_entries, int, 0); |
| module_param(rq3_entries, int, 0); |
| module_param(sq_entries, int, 0); |
| module_param(prop_carrier_state, int, 0); |
| module_param(use_mcs, int, 0); |
| module_param(use_lro, int, 0); |
| module_param(lro_max_aggr, int, 0); |
| module_param(num_tx_qps, int, 0); |
| |
| MODULE_PARM_DESC(num_tx_qps, "Number of TX-QPS"); |
| MODULE_PARM_DESC(msg_level, "msg_level"); |
| MODULE_PARM_DESC(prop_carrier_state, "Propagate carrier state of physical " |
| "port to stack. 1:yes, 0:no. Default = 0 "); |
| MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 " |
| "[2^x - 1], x = [6..14]. Default = " |
| __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")"); |
| MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 " |
| "[2^x - 1], x = [6..14]. Default = " |
| __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")"); |
| MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 " |
| "[2^x - 1], x = [6..14]. Default = " |
| __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")"); |
| MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue " |
| "[2^x - 1], x = [6..14]. Default = " |
| __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")"); |
| MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 0 "); |
| |
| MODULE_PARM_DESC(lro_max_aggr, " LRO: Max packets to be aggregated. Default = " |
| __MODULE_STRING(EHEA_LRO_MAX_AGGR)); |
| MODULE_PARM_DESC(use_lro, " Large Receive Offload, 1: enable, 0: disable, " |
| "Default = 0"); |
| |
| static int port_name_cnt; |
| static LIST_HEAD(adapter_list); |
| u64 ehea_driver_flags; |
| struct work_struct ehea_rereg_mr_task; |
| static DEFINE_MUTEX(dlpar_mem_lock); |
| struct ehea_fw_handle_array ehea_fw_handles; |
| struct ehea_bcmc_reg_array ehea_bcmc_regs; |
| |
| |
| static int __devinit ehea_probe_adapter(struct of_device *dev, |
| const struct of_device_id *id); |
| |
| static int __devexit ehea_remove(struct of_device *dev); |
| |
| static struct of_device_id ehea_device_table[] = { |
| { |
| .name = "lhea", |
| .compatible = "IBM,lhea", |
| }, |
| {}, |
| }; |
| |
| static struct of_platform_driver ehea_driver = { |
| .name = "ehea", |
| .match_table = ehea_device_table, |
| .probe = ehea_probe_adapter, |
| .remove = ehea_remove, |
| }; |
| |
| void ehea_dump(void *adr, int len, char *msg) |
| { |
| int x; |
| unsigned char *deb = adr; |
| for (x = 0; x < len; x += 16) { |
| printk(DRV_NAME " %s adr=%p ofs=%04x %016lx %016lx\n", msg, |
| deb, x, *((u64 *)&deb[0]), *((u64 *)&deb[8])); |
| deb += 16; |
| } |
| } |
| |
| static void ehea_update_firmware_handles(void) |
| { |
| struct ehea_fw_handle_entry *arr = NULL; |
| struct ehea_adapter *adapter; |
| int num_adapters = 0; |
| int num_ports = 0; |
| int num_portres = 0; |
| int i = 0; |
| int num_fw_handles, k, l; |
| |
| /* Determine number of handles */ |
| list_for_each_entry(adapter, &adapter_list, list) { |
| num_adapters++; |
| |
| for (k = 0; k < EHEA_MAX_PORTS; k++) { |
| struct ehea_port *port = adapter->port[k]; |
| |
| if (!port || (port->state != EHEA_PORT_UP)) |
| continue; |
| |
| num_ports++; |
| num_portres += port->num_def_qps + port->num_add_tx_qps; |
| } |
| } |
| |
| num_fw_handles = num_adapters * EHEA_NUM_ADAPTER_FW_HANDLES + |
| num_ports * EHEA_NUM_PORT_FW_HANDLES + |
| num_portres * EHEA_NUM_PORTRES_FW_HANDLES; |
| |
| if (num_fw_handles) { |
| arr = kzalloc(num_fw_handles * sizeof(*arr), GFP_KERNEL); |
| if (!arr) |
| return; /* Keep the existing array */ |
| } else |
| goto out_update; |
| |
| list_for_each_entry(adapter, &adapter_list, list) { |
| for (k = 0; k < EHEA_MAX_PORTS; k++) { |
| struct ehea_port *port = adapter->port[k]; |
| |
| if (!port || (port->state != EHEA_PORT_UP)) |
| continue; |
| |
| for (l = 0; |
| l < port->num_def_qps + port->num_add_tx_qps; |
| l++) { |
| struct ehea_port_res *pr = &port->port_res[l]; |
| |
| arr[i].adh = adapter->handle; |
| arr[i++].fwh = pr->qp->fw_handle; |
| arr[i].adh = adapter->handle; |
| arr[i++].fwh = pr->send_cq->fw_handle; |
| arr[i].adh = adapter->handle; |
| arr[i++].fwh = pr->recv_cq->fw_handle; |
| arr[i].adh = adapter->handle; |
| arr[i++].fwh = pr->eq->fw_handle; |
| arr[i].adh = adapter->handle; |
| arr[i++].fwh = pr->send_mr.handle; |
| arr[i].adh = adapter->handle; |
| arr[i++].fwh = pr->recv_mr.handle; |
| } |
| arr[i].adh = adapter->handle; |
| arr[i++].fwh = port->qp_eq->fw_handle; |
| } |
| |
| arr[i].adh = adapter->handle; |
| arr[i++].fwh = adapter->neq->fw_handle; |
| |
| if (adapter->mr.handle) { |
| arr[i].adh = adapter->handle; |
| arr[i++].fwh = adapter->mr.handle; |
| } |
| } |
| |
| out_update: |
| kfree(ehea_fw_handles.arr); |
| ehea_fw_handles.arr = arr; |
| ehea_fw_handles.num_entries = i; |
| } |
| |
| static void ehea_update_bcmc_registrations(void) |
| { |
| struct ehea_bcmc_reg_entry *arr = NULL; |
| struct ehea_adapter *adapter; |
| struct ehea_mc_list *mc_entry; |
| int num_registrations = 0; |
| int i = 0; |
| int k; |
| |
| /* Determine number of registrations */ |
| list_for_each_entry(adapter, &adapter_list, list) |
| for (k = 0; k < EHEA_MAX_PORTS; k++) { |
| struct ehea_port *port = adapter->port[k]; |
| |
| if (!port || (port->state != EHEA_PORT_UP)) |
| continue; |
| |
| num_registrations += 2; /* Broadcast registrations */ |
| |
| list_for_each_entry(mc_entry, &port->mc_list->list,list) |
| num_registrations += 2; |
| } |
| |
| if (num_registrations) { |
| arr = kzalloc(num_registrations * sizeof(*arr), GFP_KERNEL); |
| if (!arr) |
| return; /* Keep the existing array */ |
| } else |
| goto out_update; |
| |
| list_for_each_entry(adapter, &adapter_list, list) { |
| for (k = 0; k < EHEA_MAX_PORTS; k++) { |
| struct ehea_port *port = adapter->port[k]; |
| |
| if (!port || (port->state != EHEA_PORT_UP)) |
| continue; |
| |
| arr[i].adh = adapter->handle; |
| arr[i].port_id = port->logical_port_id; |
| arr[i].reg_type = EHEA_BCMC_BROADCAST | |
| EHEA_BCMC_UNTAGGED; |
| arr[i++].macaddr = port->mac_addr; |
| |
| arr[i].adh = adapter->handle; |
| arr[i].port_id = port->logical_port_id; |
| arr[i].reg_type = EHEA_BCMC_BROADCAST | |
| EHEA_BCMC_VLANID_ALL; |
| arr[i++].macaddr = port->mac_addr; |
| |
| list_for_each_entry(mc_entry, |
| &port->mc_list->list, list) { |
| arr[i].adh = adapter->handle; |
| arr[i].port_id = port->logical_port_id; |
| arr[i].reg_type = EHEA_BCMC_SCOPE_ALL | |
| EHEA_BCMC_MULTICAST | |
| EHEA_BCMC_UNTAGGED; |
| arr[i++].macaddr = mc_entry->macaddr; |
| |
| arr[i].adh = adapter->handle; |
| arr[i].port_id = port->logical_port_id; |
| arr[i].reg_type = EHEA_BCMC_SCOPE_ALL | |
| EHEA_BCMC_MULTICAST | |
| EHEA_BCMC_VLANID_ALL; |
| arr[i++].macaddr = mc_entry->macaddr; |
| } |
| } |
| } |
| |
| out_update: |
| kfree(ehea_bcmc_regs.arr); |
| ehea_bcmc_regs.arr = arr; |
| ehea_bcmc_regs.num_entries = i; |
| } |
| |
| static struct net_device_stats *ehea_get_stats(struct net_device *dev) |
| { |
| struct ehea_port *port = netdev_priv(dev); |
| struct net_device_stats *stats = &port->stats; |
| struct hcp_ehea_port_cb2 *cb2; |
| u64 hret, rx_packets, tx_packets; |
| int i; |
| |
| memset(stats, 0, sizeof(*stats)); |
| |
| cb2 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
| if (!cb2) { |
| ehea_error("no mem for cb2"); |
| goto out; |
| } |
| |
| hret = ehea_h_query_ehea_port(port->adapter->handle, |
| port->logical_port_id, |
| H_PORT_CB2, H_PORT_CB2_ALL, cb2); |
| if (hret != H_SUCCESS) { |
| ehea_error("query_ehea_port failed"); |
| goto out_herr; |
| } |
| |
| if (netif_msg_hw(port)) |
| ehea_dump(cb2, sizeof(*cb2), "net_device_stats"); |
| |
| rx_packets = 0; |
| for (i = 0; i < port->num_def_qps; i++) |
| rx_packets += port->port_res[i].rx_packets; |
| |
| tx_packets = 0; |
| for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) |
| tx_packets += port->port_res[i].tx_packets; |
| |
| stats->tx_packets = tx_packets; |
| stats->multicast = cb2->rxmcp; |
| stats->rx_errors = cb2->rxuerr; |
| stats->rx_bytes = cb2->rxo; |
| stats->tx_bytes = cb2->txo; |
| stats->rx_packets = rx_packets; |
| |
| out_herr: |
| kfree(cb2); |
| out: |
| return stats; |
| } |
| |
| static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes) |
| { |
| struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr; |
| struct net_device *dev = pr->port->netdev; |
| int max_index_mask = pr->rq1_skba.len - 1; |
| int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes; |
| int adder = 0; |
| int i; |
| |
| pr->rq1_skba.os_skbs = 0; |
| |
| if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) { |
| if (nr_of_wqes > 0) |
| pr->rq1_skba.index = index; |
| pr->rq1_skba.os_skbs = fill_wqes; |
| return; |
| } |
| |
| for (i = 0; i < fill_wqes; i++) { |
| if (!skb_arr_rq1[index]) { |
| skb_arr_rq1[index] = netdev_alloc_skb(dev, |
| EHEA_L_PKT_SIZE); |
| if (!skb_arr_rq1[index]) { |
| pr->rq1_skba.os_skbs = fill_wqes - i; |
| ehea_error("%s: no mem for skb/%d wqes filled", |
| dev->name, i); |
| break; |
| } |
| } |
| index--; |
| index &= max_index_mask; |
| adder++; |
| } |
| |
| if (adder == 0) |
| return; |
| |
| /* Ring doorbell */ |
| ehea_update_rq1a(pr->qp, adder); |
| } |
| |
| static int ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a) |
| { |
| int ret = 0; |
| struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr; |
| struct net_device *dev = pr->port->netdev; |
| int i; |
| |
| for (i = 0; i < pr->rq1_skba.len; i++) { |
| skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE); |
| if (!skb_arr_rq1[i]) { |
| ehea_error("%s: no mem for skb/%d wqes filled", |
| dev->name, i); |
| ret = -ENOMEM; |
| goto out; |
| } |
| } |
| /* Ring doorbell */ |
| ehea_update_rq1a(pr->qp, nr_rq1a); |
| out: |
| return ret; |
| } |
| |
| static int ehea_refill_rq_def(struct ehea_port_res *pr, |
| struct ehea_q_skb_arr *q_skba, int rq_nr, |
| int num_wqes, int wqe_type, int packet_size) |
| { |
| struct net_device *dev = pr->port->netdev; |
| struct ehea_qp *qp = pr->qp; |
| struct sk_buff **skb_arr = q_skba->arr; |
| struct ehea_rwqe *rwqe; |
| int i, index, max_index_mask, fill_wqes; |
| int adder = 0; |
| int ret = 0; |
| |
| fill_wqes = q_skba->os_skbs + num_wqes; |
| q_skba->os_skbs = 0; |
| |
| if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) { |
| q_skba->os_skbs = fill_wqes; |
| return ret; |
| } |
| |
| index = q_skba->index; |
| max_index_mask = q_skba->len - 1; |
| for (i = 0; i < fill_wqes; i++) { |
| u64 tmp_addr; |
| struct sk_buff *skb = netdev_alloc_skb(dev, packet_size); |
| if (!skb) { |
| ehea_error("%s: no mem for skb/%d wqes filled", |
| pr->port->netdev->name, i); |
| q_skba->os_skbs = fill_wqes - i; |
| ret = -ENOMEM; |
| break; |
| } |
| skb_reserve(skb, NET_IP_ALIGN); |
| |
| skb_arr[index] = skb; |
| tmp_addr = ehea_map_vaddr(skb->data); |
| if (tmp_addr == -1) { |
| dev_kfree_skb(skb); |
| q_skba->os_skbs = fill_wqes - i; |
| ret = 0; |
| break; |
| } |
| |
| rwqe = ehea_get_next_rwqe(qp, rq_nr); |
| rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type) |
| | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index); |
| rwqe->sg_list[0].l_key = pr->recv_mr.lkey; |
| rwqe->sg_list[0].vaddr = tmp_addr; |
| rwqe->sg_list[0].len = packet_size; |
| rwqe->data_segments = 1; |
| |
| index++; |
| index &= max_index_mask; |
| adder++; |
| } |
| |
| q_skba->index = index; |
| if (adder == 0) |
| goto out; |
| |
| /* Ring doorbell */ |
| iosync(); |
| if (rq_nr == 2) |
| ehea_update_rq2a(pr->qp, adder); |
| else |
| ehea_update_rq3a(pr->qp, adder); |
| out: |
| return ret; |
| } |
| |
| |
| static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes) |
| { |
| return ehea_refill_rq_def(pr, &pr->rq2_skba, 2, |
| nr_of_wqes, EHEA_RWQE2_TYPE, |
| EHEA_RQ2_PKT_SIZE + NET_IP_ALIGN); |
| } |
| |
| |
| static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes) |
| { |
| return ehea_refill_rq_def(pr, &pr->rq3_skba, 3, |
| nr_of_wqes, EHEA_RWQE3_TYPE, |
| EHEA_MAX_PACKET_SIZE + NET_IP_ALIGN); |
| } |
| |
| static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num) |
| { |
| *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5; |
| if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0) |
| return 0; |
| if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) && |
| (cqe->header_length == 0)) |
| return 0; |
| return -EINVAL; |
| } |
| |
| static inline void ehea_fill_skb(struct net_device *dev, |
| struct sk_buff *skb, struct ehea_cqe *cqe) |
| { |
| int length = cqe->num_bytes_transfered - 4; /*remove CRC */ |
| |
| skb_put(skb, length); |
| skb->ip_summed = CHECKSUM_UNNECESSARY; |
| skb->protocol = eth_type_trans(skb, dev); |
| } |
| |
| static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array, |
| int arr_len, |
| struct ehea_cqe *cqe) |
| { |
| int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id); |
| struct sk_buff *skb; |
| void *pref; |
| int x; |
| |
| x = skb_index + 1; |
| x &= (arr_len - 1); |
| |
| pref = skb_array[x]; |
| prefetchw(pref); |
| prefetchw(pref + EHEA_CACHE_LINE); |
| |
| pref = (skb_array[x]->data); |
| prefetch(pref); |
| prefetch(pref + EHEA_CACHE_LINE); |
| prefetch(pref + EHEA_CACHE_LINE * 2); |
| prefetch(pref + EHEA_CACHE_LINE * 3); |
| skb = skb_array[skb_index]; |
| skb_array[skb_index] = NULL; |
| return skb; |
| } |
| |
| static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array, |
| int arr_len, int wqe_index) |
| { |
| struct sk_buff *skb; |
| void *pref; |
| int x; |
| |
| x = wqe_index + 1; |
| x &= (arr_len - 1); |
| |
| pref = skb_array[x]; |
| prefetchw(pref); |
| prefetchw(pref + EHEA_CACHE_LINE); |
| |
| pref = (skb_array[x]->data); |
| prefetchw(pref); |
| prefetchw(pref + EHEA_CACHE_LINE); |
| |
| skb = skb_array[wqe_index]; |
| skb_array[wqe_index] = NULL; |
| return skb; |
| } |
| |
| static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq, |
| struct ehea_cqe *cqe, int *processed_rq2, |
| int *processed_rq3) |
| { |
| struct sk_buff *skb; |
| |
| if (cqe->status & EHEA_CQE_STAT_ERR_TCP) |
| pr->p_stats.err_tcp_cksum++; |
| if (cqe->status & EHEA_CQE_STAT_ERR_IP) |
| pr->p_stats.err_ip_cksum++; |
| if (cqe->status & EHEA_CQE_STAT_ERR_CRC) |
| pr->p_stats.err_frame_crc++; |
| |
| if (rq == 2) { |
| *processed_rq2 += 1; |
| skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe); |
| dev_kfree_skb(skb); |
| } else if (rq == 3) { |
| *processed_rq3 += 1; |
| skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe); |
| dev_kfree_skb(skb); |
| } |
| |
| if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) { |
| if (netif_msg_rx_err(pr->port)) { |
| ehea_error("Critical receive error for QP %d. " |
| "Resetting port.", pr->qp->init_attr.qp_nr); |
| ehea_dump(cqe, sizeof(*cqe), "CQE"); |
| } |
| schedule_work(&pr->port->reset_task); |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| static int get_skb_hdr(struct sk_buff *skb, void **iphdr, |
| void **tcph, u64 *hdr_flags, void *priv) |
| { |
| struct ehea_cqe *cqe = priv; |
| unsigned int ip_len; |
| struct iphdr *iph; |
| |
| /* non tcp/udp packets */ |
| if (!cqe->header_length) |
| return -1; |
| |
| /* non tcp packet */ |
| skb_reset_network_header(skb); |
| iph = ip_hdr(skb); |
| if (iph->protocol != IPPROTO_TCP) |
| return -1; |
| |
| ip_len = ip_hdrlen(skb); |
| skb_set_transport_header(skb, ip_len); |
| *tcph = tcp_hdr(skb); |
| |
| /* check if ip header and tcp header are complete */ |
| if (iph->tot_len < ip_len + tcp_hdrlen(skb)) |
| return -1; |
| |
| *hdr_flags = LRO_IPV4 | LRO_TCP; |
| *iphdr = iph; |
| |
| return 0; |
| } |
| |
| static void ehea_proc_skb(struct ehea_port_res *pr, struct ehea_cqe *cqe, |
| struct sk_buff *skb) |
| { |
| int vlan_extracted = (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT) |
| && pr->port->vgrp; |
| |
| if (use_lro) { |
| if (vlan_extracted) |
| lro_vlan_hwaccel_receive_skb(&pr->lro_mgr, skb, |
| pr->port->vgrp, |
| cqe->vlan_tag, |
| cqe); |
| else |
| lro_receive_skb(&pr->lro_mgr, skb, cqe); |
| } else { |
| if (vlan_extracted) |
| vlan_hwaccel_receive_skb(skb, pr->port->vgrp, |
| cqe->vlan_tag); |
| else |
| netif_receive_skb(skb); |
| } |
| } |
| |
| static int ehea_proc_rwqes(struct net_device *dev, |
| struct ehea_port_res *pr, |
| int budget) |
| { |
| struct ehea_port *port = pr->port; |
| struct ehea_qp *qp = pr->qp; |
| struct ehea_cqe *cqe; |
| struct sk_buff *skb; |
| struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr; |
| struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr; |
| struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr; |
| int skb_arr_rq1_len = pr->rq1_skba.len; |
| int skb_arr_rq2_len = pr->rq2_skba.len; |
| int skb_arr_rq3_len = pr->rq3_skba.len; |
| int processed, processed_rq1, processed_rq2, processed_rq3; |
| int wqe_index, last_wqe_index, rq, port_reset; |
| |
| processed = processed_rq1 = processed_rq2 = processed_rq3 = 0; |
| last_wqe_index = 0; |
| |
| cqe = ehea_poll_rq1(qp, &wqe_index); |
| while ((processed < budget) && cqe) { |
| ehea_inc_rq1(qp); |
| processed_rq1++; |
| processed++; |
| if (netif_msg_rx_status(port)) |
| ehea_dump(cqe, sizeof(*cqe), "CQE"); |
| |
| last_wqe_index = wqe_index; |
| rmb(); |
| if (!ehea_check_cqe(cqe, &rq)) { |
| if (rq == 1) { |
| /* LL RQ1 */ |
| skb = get_skb_by_index_ll(skb_arr_rq1, |
| skb_arr_rq1_len, |
| wqe_index); |
| if (unlikely(!skb)) { |
| if (netif_msg_rx_err(port)) |
| ehea_error("LL rq1: skb=NULL"); |
| |
| skb = netdev_alloc_skb(dev, |
| EHEA_L_PKT_SIZE); |
| if (!skb) |
| break; |
| } |
| skb_copy_to_linear_data(skb, ((char *)cqe) + 64, |
| cqe->num_bytes_transfered - 4); |
| ehea_fill_skb(dev, skb, cqe); |
| } else if (rq == 2) { |
| /* RQ2 */ |
| skb = get_skb_by_index(skb_arr_rq2, |
| skb_arr_rq2_len, cqe); |
| if (unlikely(!skb)) { |
| if (netif_msg_rx_err(port)) |
| ehea_error("rq2: skb=NULL"); |
| break; |
| } |
| ehea_fill_skb(dev, skb, cqe); |
| processed_rq2++; |
| } else { |
| /* RQ3 */ |
| skb = get_skb_by_index(skb_arr_rq3, |
| skb_arr_rq3_len, cqe); |
| if (unlikely(!skb)) { |
| if (netif_msg_rx_err(port)) |
| ehea_error("rq3: skb=NULL"); |
| break; |
| } |
| ehea_fill_skb(dev, skb, cqe); |
| processed_rq3++; |
| } |
| |
| ehea_proc_skb(pr, cqe, skb); |
| dev->last_rx = jiffies; |
| } else { |
| pr->p_stats.poll_receive_errors++; |
| port_reset = ehea_treat_poll_error(pr, rq, cqe, |
| &processed_rq2, |
| &processed_rq3); |
| if (port_reset) |
| break; |
| } |
| cqe = ehea_poll_rq1(qp, &wqe_index); |
| } |
| if (use_lro) |
| lro_flush_all(&pr->lro_mgr); |
| |
| pr->rx_packets += processed; |
| |
| ehea_refill_rq1(pr, last_wqe_index, processed_rq1); |
| ehea_refill_rq2(pr, processed_rq2); |
| ehea_refill_rq3(pr, processed_rq3); |
| |
| return processed; |
| } |
| |
| static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota) |
| { |
| struct sk_buff *skb; |
| struct ehea_cq *send_cq = pr->send_cq; |
| struct ehea_cqe *cqe; |
| int quota = my_quota; |
| int cqe_counter = 0; |
| int swqe_av = 0; |
| int index; |
| unsigned long flags; |
| |
| cqe = ehea_poll_cq(send_cq); |
| while (cqe && (quota > 0)) { |
| ehea_inc_cq(send_cq); |
| |
| cqe_counter++; |
| rmb(); |
| if (cqe->status & EHEA_CQE_STAT_ERR_MASK) { |
| ehea_error("Send Completion Error: Resetting port"); |
| if (netif_msg_tx_err(pr->port)) |
| ehea_dump(cqe, sizeof(*cqe), "Send CQE"); |
| schedule_work(&pr->port->reset_task); |
| break; |
| } |
| |
| if (netif_msg_tx_done(pr->port)) |
| ehea_dump(cqe, sizeof(*cqe), "CQE"); |
| |
| if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id) |
| == EHEA_SWQE2_TYPE)) { |
| |
| index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id); |
| skb = pr->sq_skba.arr[index]; |
| dev_kfree_skb(skb); |
| pr->sq_skba.arr[index] = NULL; |
| } |
| |
| swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id); |
| quota--; |
| |
| cqe = ehea_poll_cq(send_cq); |
| }; |
| |
| ehea_update_feca(send_cq, cqe_counter); |
| atomic_add(swqe_av, &pr->swqe_avail); |
| |
| spin_lock_irqsave(&pr->netif_queue, flags); |
| |
| if (pr->queue_stopped && (atomic_read(&pr->swqe_avail) |
| >= pr->swqe_refill_th)) { |
| netif_wake_queue(pr->port->netdev); |
| pr->queue_stopped = 0; |
| } |
| spin_unlock_irqrestore(&pr->netif_queue, flags); |
| |
| return cqe; |
| } |
| |
| #define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16 |
| #define EHEA_POLL_MAX_CQES 65535 |
| |
| static int ehea_poll(struct napi_struct *napi, int budget) |
| { |
| struct ehea_port_res *pr = container_of(napi, struct ehea_port_res, |
| napi); |
| struct net_device *dev = pr->port->netdev; |
| struct ehea_cqe *cqe; |
| struct ehea_cqe *cqe_skb = NULL; |
| int force_irq, wqe_index; |
| int rx = 0; |
| |
| force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ); |
| cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES); |
| |
| if (!force_irq) |
| rx += ehea_proc_rwqes(dev, pr, budget - rx); |
| |
| while ((rx != budget) || force_irq) { |
| pr->poll_counter = 0; |
| force_irq = 0; |
| netif_rx_complete(dev, napi); |
| ehea_reset_cq_ep(pr->recv_cq); |
| ehea_reset_cq_ep(pr->send_cq); |
| ehea_reset_cq_n1(pr->recv_cq); |
| ehea_reset_cq_n1(pr->send_cq); |
| cqe = ehea_poll_rq1(pr->qp, &wqe_index); |
| cqe_skb = ehea_poll_cq(pr->send_cq); |
| |
| if (!cqe && !cqe_skb) |
| return rx; |
| |
| if (!netif_rx_reschedule(dev, napi)) |
| return rx; |
| |
| cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES); |
| rx += ehea_proc_rwqes(dev, pr, budget - rx); |
| } |
| |
| pr->poll_counter++; |
| return rx; |
| } |
| |
| #ifdef CONFIG_NET_POLL_CONTROLLER |
| static void ehea_netpoll(struct net_device *dev) |
| { |
| struct ehea_port *port = netdev_priv(dev); |
| int i; |
| |
| for (i = 0; i < port->num_def_qps; i++) |
| netif_rx_schedule(dev, &port->port_res[i].napi); |
| } |
| #endif |
| |
| static irqreturn_t ehea_recv_irq_handler(int irq, void *param) |
| { |
| struct ehea_port_res *pr = param; |
| |
| netif_rx_schedule(pr->port->netdev, &pr->napi); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param) |
| { |
| struct ehea_port *port = param; |
| struct ehea_eqe *eqe; |
| struct ehea_qp *qp; |
| u32 qp_token; |
| |
| eqe = ehea_poll_eq(port->qp_eq); |
| |
| while (eqe) { |
| qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry); |
| ehea_error("QP aff_err: entry=0x%lx, token=0x%x", |
| eqe->entry, qp_token); |
| |
| qp = port->port_res[qp_token].qp; |
| ehea_error_data(port->adapter, qp->fw_handle); |
| eqe = ehea_poll_eq(port->qp_eq); |
| } |
| |
| schedule_work(&port->reset_task); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter, |
| int logical_port) |
| { |
| int i; |
| |
| for (i = 0; i < EHEA_MAX_PORTS; i++) |
| if (adapter->port[i]) |
| if (adapter->port[i]->logical_port_id == logical_port) |
| return adapter->port[i]; |
| return NULL; |
| } |
| |
| int ehea_sense_port_attr(struct ehea_port *port) |
| { |
| int ret; |
| u64 hret; |
| struct hcp_ehea_port_cb0 *cb0; |
| |
| /* may be called via ehea_neq_tasklet() */ |
| cb0 = kzalloc(PAGE_SIZE, GFP_ATOMIC); |
| if (!cb0) { |
| ehea_error("no mem for cb0"); |
| ret = -ENOMEM; |
| goto out; |
| } |
| |
| hret = ehea_h_query_ehea_port(port->adapter->handle, |
| port->logical_port_id, H_PORT_CB0, |
| EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF), |
| cb0); |
| if (hret != H_SUCCESS) { |
| ret = -EIO; |
| goto out_free; |
| } |
| |
| /* MAC address */ |
| port->mac_addr = cb0->port_mac_addr << 16; |
| |
| if (!is_valid_ether_addr((u8 *)&port->mac_addr)) { |
| ret = -EADDRNOTAVAIL; |
| goto out_free; |
| } |
| |
| /* Port speed */ |
| switch (cb0->port_speed) { |
| case H_SPEED_10M_H: |
| port->port_speed = EHEA_SPEED_10M; |
| port->full_duplex = 0; |
| break; |
| case H_SPEED_10M_F: |
| port->port_speed = EHEA_SPEED_10M; |
| port->full_duplex = 1; |
| break; |
| case H_SPEED_100M_H: |
| port->port_speed = EHEA_SPEED_100M; |
| port->full_duplex = 0; |
| break; |
| case H_SPEED_100M_F: |
| port->port_speed = EHEA_SPEED_100M; |
| port->full_duplex = 1; |
| break; |
| case H_SPEED_1G_F: |
| port->port_speed = EHEA_SPEED_1G; |
| port->full_duplex = 1; |
| break; |
| case H_SPEED_10G_F: |
| port->port_speed = EHEA_SPEED_10G; |
| port->full_duplex = 1; |
| break; |
| default: |
| port->port_speed = 0; |
| port->full_duplex = 0; |
| break; |
| } |
| |
| port->autoneg = 1; |
| port->num_mcs = cb0->num_default_qps; |
| |
| /* Number of default QPs */ |
| if (use_mcs) |
| port->num_def_qps = cb0->num_default_qps; |
| else |
| port->num_def_qps = 1; |
| |
| if (!port->num_def_qps) { |
| ret = -EINVAL; |
| goto out_free; |
| } |
| |
| port->num_tx_qps = num_tx_qps; |
| |
| if (port->num_def_qps >= port->num_tx_qps) |
| port->num_add_tx_qps = 0; |
| else |
| port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps; |
| |
| ret = 0; |
| out_free: |
| if (ret || netif_msg_probe(port)) |
| ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr"); |
| kfree(cb0); |
| out: |
| return ret; |
| } |
| |
| int ehea_set_portspeed(struct ehea_port *port, u32 port_speed) |
| { |
| struct hcp_ehea_port_cb4 *cb4; |
| u64 hret; |
| int ret = 0; |
| |
| cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
| if (!cb4) { |
| ehea_error("no mem for cb4"); |
| ret = -ENOMEM; |
| goto out; |
| } |
| |
| cb4->port_speed = port_speed; |
| |
| netif_carrier_off(port->netdev); |
| |
| hret = ehea_h_modify_ehea_port(port->adapter->handle, |
| port->logical_port_id, |
| H_PORT_CB4, H_PORT_CB4_SPEED, cb4); |
| if (hret == H_SUCCESS) { |
| port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0; |
| |
| hret = ehea_h_query_ehea_port(port->adapter->handle, |
| port->logical_port_id, |
| H_PORT_CB4, H_PORT_CB4_SPEED, |
| cb4); |
| if (hret == H_SUCCESS) { |
| switch (cb4->port_speed) { |
| case H_SPEED_10M_H: |
| port->port_speed = EHEA_SPEED_10M; |
| port->full_duplex = 0; |
| break; |
| case H_SPEED_10M_F: |
| port->port_speed = EHEA_SPEED_10M; |
| port->full_duplex = 1; |
| break; |
| case H_SPEED_100M_H: |
| port->port_speed = EHEA_SPEED_100M; |
| port->full_duplex = 0; |
| break; |
| case H_SPEED_100M_F: |
| port->port_speed = EHEA_SPEED_100M; |
| port->full_duplex = 1; |
| break; |
| case H_SPEED_1G_F: |
| port->port_speed = EHEA_SPEED_1G; |
| port->full_duplex = 1; |
| break; |
| case H_SPEED_10G_F: |
| port->port_speed = EHEA_SPEED_10G; |
| port->full_duplex = 1; |
| break; |
| default: |
| port->port_speed = 0; |
| port->full_duplex = 0; |
| break; |
| } |
| } else { |
| ehea_error("Failed sensing port speed"); |
| ret = -EIO; |
| } |
| } else { |
| if (hret == H_AUTHORITY) { |
| ehea_info("Hypervisor denied setting port speed"); |
| ret = -EPERM; |
| } else { |
| ret = -EIO; |
| ehea_error("Failed setting port speed"); |
| } |
| } |
| if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP)) |
| netif_carrier_on(port->netdev); |
| |
| kfree(cb4); |
| out: |
| return ret; |
| } |
| |
| static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe) |
| { |
| int ret; |
| u8 ec; |
| u8 portnum; |
| struct ehea_port *port; |
| |
| ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe); |
| portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe); |
| port = ehea_get_port(adapter, portnum); |
| |
| switch (ec) { |
| case EHEA_EC_PORTSTATE_CHG: /* port state change */ |
| |
| if (!port) { |
| ehea_error("unknown portnum %x", portnum); |
| break; |
| } |
| |
| if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) { |
| if (!netif_carrier_ok(port->netdev)) { |
| ret = ehea_sense_port_attr(port); |
| if (ret) { |
| ehea_error("failed resensing port " |
| "attributes"); |
| break; |
| } |
| |
| if (netif_msg_link(port)) |
| ehea_info("%s: Logical port up: %dMbps " |
| "%s Duplex", |
| port->netdev->name, |
| port->port_speed, |
| port->full_duplex == |
| 1 ? "Full" : "Half"); |
| |
| netif_carrier_on(port->netdev); |
| netif_wake_queue(port->netdev); |
| } |
| } else |
| if (netif_carrier_ok(port->netdev)) { |
| if (netif_msg_link(port)) |
| ehea_info("%s: Logical port down", |
| port->netdev->name); |
| netif_carrier_off(port->netdev); |
| netif_stop_queue(port->netdev); |
| } |
| |
| if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) { |
| port->phy_link = EHEA_PHY_LINK_UP; |
| if (netif_msg_link(port)) |
| ehea_info("%s: Physical port up", |
| port->netdev->name); |
| if (prop_carrier_state) |
| netif_carrier_on(port->netdev); |
| } else { |
| port->phy_link = EHEA_PHY_LINK_DOWN; |
| if (netif_msg_link(port)) |
| ehea_info("%s: Physical port down", |
| port->netdev->name); |
| if (prop_carrier_state) |
| netif_carrier_off(port->netdev); |
| } |
| |
| if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe)) |
| ehea_info("External switch port is primary port"); |
| else |
| ehea_info("External switch port is backup port"); |
| |
| break; |
| case EHEA_EC_ADAPTER_MALFUNC: |
| ehea_error("Adapter malfunction"); |
| break; |
| case EHEA_EC_PORT_MALFUNC: |
| ehea_info("Port malfunction: Device: %s", port->netdev->name); |
| netif_carrier_off(port->netdev); |
| netif_stop_queue(port->netdev); |
| break; |
| default: |
| ehea_error("unknown event code %x, eqe=0x%lX", ec, eqe); |
| break; |
| } |
| } |
| |
| static void ehea_neq_tasklet(unsigned long data) |
| { |
| struct ehea_adapter *adapter = (struct ehea_adapter *)data; |
| struct ehea_eqe *eqe; |
| u64 event_mask; |
| |
| eqe = ehea_poll_eq(adapter->neq); |
| ehea_debug("eqe=%p", eqe); |
| |
| while (eqe) { |
| ehea_debug("*eqe=%lx", eqe->entry); |
| ehea_parse_eqe(adapter, eqe->entry); |
| eqe = ehea_poll_eq(adapter->neq); |
| ehea_debug("next eqe=%p", eqe); |
| } |
| |
| event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1) |
| | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1) |
| | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1); |
| |
| ehea_h_reset_events(adapter->handle, |
| adapter->neq->fw_handle, event_mask); |
| } |
| |
| static irqreturn_t ehea_interrupt_neq(int irq, void *param) |
| { |
| struct ehea_adapter *adapter = param; |
| tasklet_hi_schedule(&adapter->neq_tasklet); |
| return IRQ_HANDLED; |
| } |
| |
| |
| static int ehea_fill_port_res(struct ehea_port_res *pr) |
| { |
| int ret; |
| struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr; |
| |
| ret = ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1 |
| - init_attr->act_nr_rwqes_rq2 |
| - init_attr->act_nr_rwqes_rq3 - 1); |
| |
| ret |= ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1); |
| |
| ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1); |
| |
| return ret; |
| } |
| |
| static int ehea_reg_interrupts(struct net_device *dev) |
| { |
| struct ehea_port *port = netdev_priv(dev); |
| struct ehea_port_res *pr; |
| int i, ret; |
| |
| |
| snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff", |
| dev->name); |
| |
| ret = ibmebus_request_irq(port->qp_eq->attr.ist1, |
| ehea_qp_aff_irq_handler, |
| IRQF_DISABLED, port->int_aff_name, port); |
| if (ret) { |
| ehea_error("failed registering irq for qp_aff_irq_handler:" |
| "ist=%X", port->qp_eq->attr.ist1); |
| goto out_free_qpeq; |
| } |
| |
| if (netif_msg_ifup(port)) |
| ehea_info("irq_handle 0x%X for function qp_aff_irq_handler " |
| "registered", port->qp_eq->attr.ist1); |
| |
| |
| for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { |
| pr = &port->port_res[i]; |
| snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1, |
| "%s-queue%d", dev->name, i); |
| ret = ibmebus_request_irq(pr->eq->attr.ist1, |
| ehea_recv_irq_handler, |
| IRQF_DISABLED, pr->int_send_name, |
| pr); |
| if (ret) { |
| ehea_error("failed registering irq for ehea_queue " |
| "port_res_nr:%d, ist=%X", i, |
| pr->eq->attr.ist1); |
| goto out_free_req; |
| } |
| if (netif_msg_ifup(port)) |
| ehea_info("irq_handle 0x%X for function ehea_queue_int " |
| "%d registered", pr->eq->attr.ist1, i); |
| } |
| out: |
| return ret; |
| |
| |
| out_free_req: |
| while (--i >= 0) { |
| u32 ist = port->port_res[i].eq->attr.ist1; |
| ibmebus_free_irq(ist, &port->port_res[i]); |
| } |
| |
| out_free_qpeq: |
| ibmebus_free_irq(port->qp_eq->attr.ist1, port); |
| i = port->num_def_qps; |
| |
| goto out; |
| |
| } |
| |
| static void ehea_free_interrupts(struct net_device *dev) |
| { |
| struct ehea_port *port = netdev_priv(dev); |
| struct ehea_port_res *pr; |
| int i; |
| |
| /* send */ |
| |
| for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { |
| pr = &port->port_res[i]; |
| ibmebus_free_irq(pr->eq->attr.ist1, pr); |
| if (netif_msg_intr(port)) |
| ehea_info("free send irq for res %d with handle 0x%X", |
| i, pr->eq->attr.ist1); |
| } |
| |
| /* associated events */ |
| ibmebus_free_irq(port->qp_eq->attr.ist1, port); |
| if (netif_msg_intr(port)) |
| ehea_info("associated event interrupt for handle 0x%X freed", |
| port->qp_eq->attr.ist1); |
| } |
| |
| static int ehea_configure_port(struct ehea_port *port) |
| { |
| int ret, i; |
| u64 hret, mask; |
| struct hcp_ehea_port_cb0 *cb0; |
| |
| ret = -ENOMEM; |
| cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
| if (!cb0) |
| goto out; |
| |
| cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1) |
| | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1) |
| | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1) |
| | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1) |
| | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER, |
| PXLY_RC_VLAN_FILTER) |
| | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1); |
| |
| for (i = 0; i < port->num_mcs; i++) |
| if (use_mcs) |
| cb0->default_qpn_arr[i] = |
| port->port_res[i].qp->init_attr.qp_nr; |
| else |
| cb0->default_qpn_arr[i] = |
| port->port_res[0].qp->init_attr.qp_nr; |
| |
| if (netif_msg_ifup(port)) |
| ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port"); |
| |
| mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1) |
| | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1); |
| |
| hret = ehea_h_modify_ehea_port(port->adapter->handle, |
| port->logical_port_id, |
| H_PORT_CB0, mask, cb0); |
| ret = -EIO; |
| if (hret != H_SUCCESS) |
| goto out_free; |
| |
| ret = 0; |
| |
| out_free: |
| kfree(cb0); |
| out: |
| return ret; |
| } |
| |
| int ehea_gen_smrs(struct ehea_port_res *pr) |
| { |
| int ret; |
| struct ehea_adapter *adapter = pr->port->adapter; |
| |
| ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr); |
| if (ret) |
| goto out; |
| |
| ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr); |
| if (ret) |
| goto out_free; |
| |
| return 0; |
| |
| out_free: |
| ehea_rem_mr(&pr->send_mr); |
| out: |
| ehea_error("Generating SMRS failed\n"); |
| return -EIO; |
| } |
| |
| int ehea_rem_smrs(struct ehea_port_res *pr) |
| { |
| if ((ehea_rem_mr(&pr->send_mr)) |
| || (ehea_rem_mr(&pr->recv_mr))) |
| return -EIO; |
| else |
| return 0; |
| } |
| |
| static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries) |
| { |
| int arr_size = sizeof(void *) * max_q_entries; |
| |
| q_skba->arr = vmalloc(arr_size); |
| if (!q_skba->arr) |
| return -ENOMEM; |
| |
| memset(q_skba->arr, 0, arr_size); |
| |
| q_skba->len = max_q_entries; |
| q_skba->index = 0; |
| q_skba->os_skbs = 0; |
| |
| return 0; |
| } |
| |
| static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr, |
| struct port_res_cfg *pr_cfg, int queue_token) |
| { |
| struct ehea_adapter *adapter = port->adapter; |
| enum ehea_eq_type eq_type = EHEA_EQ; |
| struct ehea_qp_init_attr *init_attr = NULL; |
| int ret = -EIO; |
| |
| memset(pr, 0, sizeof(struct ehea_port_res)); |
| |
| pr->port = port; |
| spin_lock_init(&pr->xmit_lock); |
| spin_lock_init(&pr->netif_queue); |
| |
| pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0); |
| if (!pr->eq) { |
| ehea_error("create_eq failed (eq)"); |
| goto out_free; |
| } |
| |
| pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq, |
| pr->eq->fw_handle, |
| port->logical_port_id); |
| if (!pr->recv_cq) { |
| ehea_error("create_cq failed (cq_recv)"); |
| goto out_free; |
| } |
| |
| pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq, |
| pr->eq->fw_handle, |
| port->logical_port_id); |
| if (!pr->send_cq) { |
| ehea_error("create_cq failed (cq_send)"); |
| goto out_free; |
| } |
| |
| if (netif_msg_ifup(port)) |
| ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d", |
| pr->send_cq->attr.act_nr_of_cqes, |
| pr->recv_cq->attr.act_nr_of_cqes); |
| |
| init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL); |
| if (!init_attr) { |
| ret = -ENOMEM; |
| ehea_error("no mem for ehea_qp_init_attr"); |
| goto out_free; |
| } |
| |
| init_attr->low_lat_rq1 = 1; |
| init_attr->signalingtype = 1; /* generate CQE if specified in WQE */ |
| init_attr->rq_count = 3; |
| init_attr->qp_token = queue_token; |
| init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq; |
| init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1; |
| init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2; |
| init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3; |
| init_attr->wqe_size_enc_sq = EHEA_SG_SQ; |
| init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1; |
| init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2; |
| init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3; |
| init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD; |
| init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD; |
| init_attr->port_nr = port->logical_port_id; |
| init_attr->send_cq_handle = pr->send_cq->fw_handle; |
| init_attr->recv_cq_handle = pr->recv_cq->fw_handle; |
| init_attr->aff_eq_handle = port->qp_eq->fw_handle; |
| |
| pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr); |
| if (!pr->qp) { |
| ehea_error("create_qp failed"); |
| ret = -EIO; |
| goto out_free; |
| } |
| |
| if (netif_msg_ifup(port)) |
| ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n " |
| "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr, |
| init_attr->act_nr_send_wqes, |
| init_attr->act_nr_rwqes_rq1, |
| init_attr->act_nr_rwqes_rq2, |
| init_attr->act_nr_rwqes_rq3); |
| |
| pr->sq_skba_size = init_attr->act_nr_send_wqes + 1; |
| |
| ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size); |
| ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1); |
| ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1); |
| ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1); |
| if (ret) |
| goto out_free; |
| |
| pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10; |
| if (ehea_gen_smrs(pr) != 0) { |
| ret = -EIO; |
| goto out_free; |
| } |
| |
| atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1); |
| |
| kfree(init_attr); |
| |
| netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64); |
| |
| pr->lro_mgr.max_aggr = pr->port->lro_max_aggr; |
| pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS; |
| pr->lro_mgr.lro_arr = pr->lro_desc; |
| pr->lro_mgr.get_skb_header = get_skb_hdr; |
| pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID; |
| pr->lro_mgr.dev = port->netdev; |
| pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY; |
| pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY; |
| |
| ret = 0; |
| goto out; |
| |
| out_free: |
| kfree(init_attr); |
| vfree(pr->sq_skba.arr); |
| vfree(pr->rq1_skba.arr); |
| vfree(pr->rq2_skba.arr); |
| vfree(pr->rq3_skba.arr); |
| ehea_destroy_qp(pr->qp); |
| ehea_destroy_cq(pr->send_cq); |
| ehea_destroy_cq(pr->recv_cq); |
| ehea_destroy_eq(pr->eq); |
| out: |
| return ret; |
| } |
| |
| static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr) |
| { |
| int ret, i; |
| |
| ret = ehea_destroy_qp(pr->qp); |
| |
| if (!ret) { |
| ehea_destroy_cq(pr->send_cq); |
| ehea_destroy_cq(pr->recv_cq); |
| ehea_destroy_eq(pr->eq); |
| |
| for (i = 0; i < pr->rq1_skba.len; i++) |
| if (pr->rq1_skba.arr[i]) |
| dev_kfree_skb(pr->rq1_skba.arr[i]); |
| |
| for (i = 0; i < pr->rq2_skba.len; i++) |
| if (pr->rq2_skba.arr[i]) |
| dev_kfree_skb(pr->rq2_skba.arr[i]); |
| |
| for (i = 0; i < pr->rq3_skba.len; i++) |
| if (pr->rq3_skba.arr[i]) |
| dev_kfree_skb(pr->rq3_skba.arr[i]); |
| |
| for (i = 0; i < pr->sq_skba.len; i++) |
| if (pr->sq_skba.arr[i]) |
| dev_kfree_skb(pr->sq_skba.arr[i]); |
| |
| vfree(pr->rq1_skba.arr); |
| vfree(pr->rq2_skba.arr); |
| vfree(pr->rq3_skba.arr); |
| vfree(pr->sq_skba.arr); |
| ret = ehea_rem_smrs(pr); |
| } |
| return ret; |
| } |
| |
| /* |
| * The write_* functions store information in swqe which is used by |
| * the hardware to calculate the ip/tcp/udp checksum |
| */ |
| |
| static inline void write_ip_start_end(struct ehea_swqe *swqe, |
| const struct sk_buff *skb) |
| { |
| swqe->ip_start = skb_network_offset(skb); |
| swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1); |
| } |
| |
| static inline void write_tcp_offset_end(struct ehea_swqe *swqe, |
| const struct sk_buff *skb) |
| { |
| swqe->tcp_offset = |
| (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check)); |
| |
| swqe->tcp_end = (u16)skb->len - 1; |
| } |
| |
| static inline void write_udp_offset_end(struct ehea_swqe *swqe, |
| const struct sk_buff *skb) |
| { |
| swqe->tcp_offset = |
| (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check)); |
| |
| swqe->tcp_end = (u16)skb->len - 1; |
| } |
| |
| |
| static void write_swqe2_TSO(struct sk_buff *skb, |
| struct ehea_swqe *swqe, u32 lkey) |
| { |
| struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry; |
| u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0]; |
| int skb_data_size = skb->len - skb->data_len; |
| int headersize; |
| |
| /* Packet is TCP with TSO enabled */ |
| swqe->tx_control |= EHEA_SWQE_TSO; |
| swqe->mss = skb_shinfo(skb)->gso_size; |
| /* copy only eth/ip/tcp headers to immediate data and |
| * the rest of skb->data to sg1entry |
| */ |
| headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb); |
| |
| skb_data_size = skb->len - skb->data_len; |
| |
| if (skb_data_size >= headersize) { |
| /* copy immediate data */ |
| skb_copy_from_linear_data(skb, imm_data, headersize); |
| swqe->immediate_data_length = headersize; |
| |
| if (skb_data_size > headersize) { |
| /* set sg1entry data */ |
| sg1entry->l_key = lkey; |
| sg1entry->len = skb_data_size - headersize; |
| sg1entry->vaddr = |
| ehea_map_vaddr(skb->data + headersize); |
| swqe->descriptors++; |
| } |
| } else |
| ehea_error("cannot handle fragmented headers"); |
| } |
| |
| static void write_swqe2_nonTSO(struct sk_buff *skb, |
| struct ehea_swqe *swqe, u32 lkey) |
| { |
| int skb_data_size = skb->len - skb->data_len; |
| u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0]; |
| struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry; |
| |
| /* Packet is any nonTSO type |
| * |
| * Copy as much as possible skb->data to immediate data and |
| * the rest to sg1entry |
| */ |
| if (skb_data_size >= SWQE2_MAX_IMM) { |
| /* copy immediate data */ |
| skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM); |
| |
| swqe->immediate_data_length = SWQE2_MAX_IMM; |
| |
| if (skb_data_size > SWQE2_MAX_IMM) { |
| /* copy sg1entry data */ |
| sg1entry->l_key = lkey; |
| sg1entry->len = skb_data_size - SWQE2_MAX_IMM; |
| sg1entry->vaddr = |
| ehea_map_vaddr(skb->data + SWQE2_MAX_IMM); |
| swqe->descriptors++; |
| } |
| } else { |
| skb_copy_from_linear_data(skb, imm_data, skb_data_size); |
| swqe->immediate_data_length = skb_data_size; |
| } |
| } |
| |
| static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev, |
| struct ehea_swqe *swqe, u32 lkey) |
| { |
| struct ehea_vsgentry *sg_list, *sg1entry, *sgentry; |
| skb_frag_t *frag; |
| int nfrags, sg1entry_contains_frag_data, i; |
| |
| nfrags = skb_shinfo(skb)->nr_frags; |
| sg1entry = &swqe->u.immdata_desc.sg_entry; |
| sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list; |
| swqe->descriptors = 0; |
| sg1entry_contains_frag_data = 0; |
| |
| if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size) |
| write_swqe2_TSO(skb, swqe, lkey); |
| else |
| write_swqe2_nonTSO(skb, swqe, lkey); |
| |
| /* write descriptors */ |
| if (nfrags > 0) { |
| if (swqe->descriptors == 0) { |
| /* sg1entry not yet used */ |
| frag = &skb_shinfo(skb)->frags[0]; |
| |
| /* copy sg1entry data */ |
| sg1entry->l_key = lkey; |
| sg1entry->len = frag->size; |
| sg1entry->vaddr = |
| ehea_map_vaddr(page_address(frag->page) |
| + frag->page_offset); |
| swqe->descriptors++; |
| sg1entry_contains_frag_data = 1; |
| } |
| |
| for (i = sg1entry_contains_frag_data; i < nfrags; i++) { |
| |
| frag = &skb_shinfo(skb)->frags[i]; |
| sgentry = &sg_list[i - sg1entry_contains_frag_data]; |
| |
| sgentry->l_key = lkey; |
| sgentry->len = frag->size; |
| sgentry->vaddr = |
| ehea_map_vaddr(page_address(frag->page) |
| + frag->page_offset); |
| swqe->descriptors++; |
| } |
| } |
| } |
| |
| static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid) |
| { |
| int ret = 0; |
| u64 hret; |
| u8 reg_type; |
| |
| /* De/Register untagged packets */ |
| reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED; |
| hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, |
| port->logical_port_id, |
| reg_type, port->mac_addr, 0, hcallid); |
| if (hret != H_SUCCESS) { |
| ehea_error("%sregistering bc address failed (tagged)", |
| hcallid == H_REG_BCMC ? "" : "de"); |
| ret = -EIO; |
| goto out_herr; |
| } |
| |
| /* De/Register VLAN packets */ |
| reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL; |
| hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, |
| port->logical_port_id, |
| reg_type, port->mac_addr, 0, hcallid); |
| if (hret != H_SUCCESS) { |
| ehea_error("%sregistering bc address failed (vlan)", |
| hcallid == H_REG_BCMC ? "" : "de"); |
| ret = -EIO; |
| } |
| out_herr: |
| return ret; |
| } |
| |
| static int ehea_set_mac_addr(struct net_device *dev, void *sa) |
| { |
| struct ehea_port *port = netdev_priv(dev); |
| struct sockaddr *mac_addr = sa; |
| struct hcp_ehea_port_cb0 *cb0; |
| int ret; |
| u64 hret; |
| |
| if (!is_valid_ether_addr(mac_addr->sa_data)) { |
| ret = -EADDRNOTAVAIL; |
| goto out; |
| } |
| |
| cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
| if (!cb0) { |
| ehea_error("no mem for cb0"); |
| ret = -ENOMEM; |
| goto out; |
| } |
| |
| memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN); |
| |
| cb0->port_mac_addr = cb0->port_mac_addr >> 16; |
| |
| hret = ehea_h_modify_ehea_port(port->adapter->handle, |
| port->logical_port_id, H_PORT_CB0, |
| EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0); |
| if (hret != H_SUCCESS) { |
| ret = -EIO; |
| goto out_free; |
| } |
| |
| memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len); |
| |
| mutex_lock(&ehea_bcmc_regs.lock); |
| |
| /* Deregister old MAC in pHYP */ |
| ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC); |
| if (ret) |
| goto out_upregs; |
| |
| port->mac_addr = cb0->port_mac_addr << 16; |
| |
| /* Register new MAC in pHYP */ |
| ret = ehea_broadcast_reg_helper(port, H_REG_BCMC); |
| if (ret) |
| goto out_upregs; |
| |
| ret = 0; |
| |
| out_upregs: |
| ehea_update_bcmc_registrations(); |
| mutex_unlock(&ehea_bcmc_regs.lock); |
| out_free: |
| kfree(cb0); |
| out: |
| return ret; |
| } |
| |
| static void ehea_promiscuous_error(u64 hret, int enable) |
| { |
| if (hret == H_AUTHORITY) |
| ehea_info("Hypervisor denied %sabling promiscuous mode", |
| enable == 1 ? "en" : "dis"); |
| else |
| ehea_error("failed %sabling promiscuous mode", |
| enable == 1 ? "en" : "dis"); |
| } |
| |
| static void ehea_promiscuous(struct net_device *dev, int enable) |
| { |
| struct ehea_port *port = netdev_priv(dev); |
| struct hcp_ehea_port_cb7 *cb7; |
| u64 hret; |
| |
| if ((enable && port->promisc) || (!enable && !port->promisc)) |
| return; |
| |
| cb7 = kzalloc(PAGE_SIZE, GFP_ATOMIC); |
| if (!cb7) { |
| ehea_error("no mem for cb7"); |
| goto out; |
| } |
| |
| /* Modify Pxs_DUCQPN in CB7 */ |
| cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0; |
| |
| hret = ehea_h_modify_ehea_port(port->adapter->handle, |
| port->logical_port_id, |
| H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7); |
| if (hret) { |
| ehea_promiscuous_error(hret, enable); |
| goto out; |
| } |
| |
| port->promisc = enable; |
| out: |
| kfree(cb7); |
| return; |
| } |
| |
| static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr, |
| u32 hcallid) |
| { |
| u64 hret; |
| u8 reg_type; |
| |
| reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST |
| | EHEA_BCMC_UNTAGGED; |
| |
| hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, |
| port->logical_port_id, |
| reg_type, mc_mac_addr, 0, hcallid); |
| if (hret) |
| goto out; |
| |
| reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST |
| | EHEA_BCMC_VLANID_ALL; |
| |
| hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, |
| port->logical_port_id, |
| reg_type, mc_mac_addr, 0, hcallid); |
| out: |
| return hret; |
| } |
| |
| static int ehea_drop_multicast_list(struct net_device *dev) |
| { |
| struct ehea_port *port = netdev_priv(dev); |
| struct ehea_mc_list *mc_entry = port->mc_list; |
| struct list_head *pos; |
| struct list_head *temp; |
| int ret = 0; |
| u64 hret; |
| |
| list_for_each_safe(pos, temp, &(port->mc_list->list)) { |
| mc_entry = list_entry(pos, struct ehea_mc_list, list); |
| |
| hret = ehea_multicast_reg_helper(port, mc_entry->macaddr, |
| H_DEREG_BCMC); |
| if (hret) { |
| ehea_error("failed deregistering mcast MAC"); |
| ret = -EIO; |
| } |
| |
| list_del(pos); |
| kfree(mc_entry); |
| } |
| return ret; |
| } |
| |
| static void ehea_allmulti(struct net_device *dev, int enable) |
| { |
| struct ehea_port *port = netdev_priv(dev); |
| u64 hret; |
| |
| if (!port->allmulti) { |
| if (enable) { |
| /* Enable ALLMULTI */ |
| ehea_drop_multicast_list(dev); |
| hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC); |
| if (!hret) |
| port->allmulti = 1; |
| else |
| ehea_error("failed enabling IFF_ALLMULTI"); |
| } |
| } else |
| if (!enable) { |
| /* Disable ALLMULTI */ |
| hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC); |
| if (!hret) |
| port->allmulti = 0; |
| else |
| ehea_error("failed disabling IFF_ALLMULTI"); |
| } |
| } |
| |
| static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr) |
| { |
| struct ehea_mc_list *ehea_mcl_entry; |
| u64 hret; |
| |
| ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC); |
| if (!ehea_mcl_entry) { |
| ehea_error("no mem for mcl_entry"); |
| return; |
| } |
| |
| INIT_LIST_HEAD(&ehea_mcl_entry->list); |
| |
| memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN); |
| |
| hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr, |
| H_REG_BCMC); |
| if (!hret) |
| list_add(&ehea_mcl_entry->list, &port->mc_list->list); |
| else { |
| ehea_error("failed registering mcast MAC"); |
| kfree(ehea_mcl_entry); |
| } |
| } |
| |
| static void ehea_set_multicast_list(struct net_device *dev) |
| { |
| struct ehea_port *port = netdev_priv(dev); |
| struct dev_mc_list *k_mcl_entry; |
| int ret, i; |
| |
| if (dev->flags & IFF_PROMISC) { |
| ehea_promiscuous(dev, 1); |
| return; |
| } |
| ehea_promiscuous(dev, 0); |
| |
| mutex_lock(&ehea_bcmc_regs.lock); |
| |
| if (dev->flags & IFF_ALLMULTI) { |
| ehea_allmulti(dev, 1); |
| goto out; |
| } |
| ehea_allmulti(dev, 0); |
| |
| if (dev->mc_count) { |
| ret = ehea_drop_multicast_list(dev); |
| if (ret) { |
| /* Dropping the current multicast list failed. |
| * Enabling ALL_MULTI is the best we can do. |
| */ |
| ehea_allmulti(dev, 1); |
| } |
| |
| if (dev->mc_count > port->adapter->max_mc_mac) { |
| ehea_info("Mcast registration limit reached (0x%lx). " |
| "Use ALLMULTI!", |
| port->adapter->max_mc_mac); |
| goto out; |
| } |
| |
| for (i = 0, k_mcl_entry = dev->mc_list; i < dev->mc_count; i++, |
| k_mcl_entry = k_mcl_entry->next) |
| ehea_add_multicast_entry(port, k_mcl_entry->dmi_addr); |
| |
| } |
| out: |
| ehea_update_bcmc_registrations(); |
| mutex_unlock(&ehea_bcmc_regs.lock); |
| return; |
| } |
| |
| static int ehea_change_mtu(struct net_device *dev, int new_mtu) |
| { |
| if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE)) |
| return -EINVAL; |
| dev->mtu = new_mtu; |
| return 0; |
| } |
| |
| static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev, |
| struct ehea_swqe *swqe, u32 lkey) |
| { |
| if (skb->protocol == htons(ETH_P_IP)) { |
| const struct iphdr *iph = ip_hdr(skb); |
| |
| /* IPv4 */ |
| swqe->tx_control |= EHEA_SWQE_CRC |
| | EHEA_SWQE_IP_CHECKSUM |
| | EHEA_SWQE_TCP_CHECKSUM |
| | EHEA_SWQE_IMM_DATA_PRESENT |
| | EHEA_SWQE_DESCRIPTORS_PRESENT; |
| |
| write_ip_start_end(swqe, skb); |
| |
| if (iph->protocol == IPPROTO_UDP) { |
| if ((iph->frag_off & IP_MF) |
| || (iph->frag_off & IP_OFFSET)) |
| /* IP fragment, so don't change cs */ |
| swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM; |
| else |
| write_udp_offset_end(swqe, skb); |
| } else if (iph->protocol == IPPROTO_TCP) { |
| write_tcp_offset_end(swqe, skb); |
| } |
| |
| /* icmp (big data) and ip segmentation packets (all other ip |
| packets) do not require any special handling */ |
| |
| } else { |
| /* Other Ethernet Protocol */ |
| swqe->tx_control |= EHEA_SWQE_CRC |
| | EHEA_SWQE_IMM_DATA_PRESENT |
| | EHEA_SWQE_DESCRIPTORS_PRESENT; |
| } |
| |
| write_swqe2_data(skb, dev, swqe, lkey); |
| } |
| |
| static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev, |
| struct ehea_swqe *swqe) |
| { |
| int nfrags = skb_shinfo(skb)->nr_frags; |
| u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0]; |
| skb_frag_t *frag; |
| int i; |
| |
| if (skb->protocol == htons(ETH_P_IP)) { |
| const struct iphdr *iph = ip_hdr(skb); |
| |
| /* IPv4 */ |
| write_ip_start_end(swqe, skb); |
| |
| if (iph->protocol == IPPROTO_TCP) { |
| swqe->tx_control |= EHEA_SWQE_CRC |
| | EHEA_SWQE_IP_CHECKSUM |
| | EHEA_SWQE_TCP_CHECKSUM |
| | EHEA_SWQE_IMM_DATA_PRESENT; |
| |
| write_tcp_offset_end(swqe, skb); |
| |
| } else if (iph->protocol == IPPROTO_UDP) { |
| if ((iph->frag_off & IP_MF) |
| || (iph->frag_off & IP_OFFSET)) |
| /* IP fragment, so don't change cs */ |
| swqe->tx_control |= EHEA_SWQE_CRC |
| | EHEA_SWQE_IMM_DATA_PRESENT; |
| else { |
| swqe->tx_control |= EHEA_SWQE_CRC |
| | EHEA_SWQE_IP_CHECKSUM |
| | EHEA_SWQE_TCP_CHECKSUM |
| | EHEA_SWQE_IMM_DATA_PRESENT; |
| |
| write_udp_offset_end(swqe, skb); |
| } |
| } else { |
| /* icmp (big data) and |
| ip segmentation packets (all other ip packets) */ |
| swqe->tx_control |= EHEA_SWQE_CRC |
| | EHEA_SWQE_IP_CHECKSUM |
| | EHEA_SWQE_IMM_DATA_PRESENT; |
| } |
| } else { |
| /* Other Ethernet Protocol */ |
| swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT; |
| } |
| /* copy (immediate) data */ |
| if (nfrags == 0) { |
| /* data is in a single piece */ |
| skb_copy_from_linear_data(skb, imm_data, skb->len); |
| } else { |
| /* first copy data from the skb->data buffer ... */ |
| skb_copy_from_linear_data(skb, imm_data, |
| skb->len - skb->data_len); |
| imm_data += skb->len - skb->data_len; |
| |
| /* ... then copy data from the fragments */ |
| for (i = 0; i < nfrags; i++) { |
| frag = &skb_shinfo(skb)->frags[i]; |
| memcpy(imm_data, |
| page_address(frag->page) + frag->page_offset, |
| frag->size); |
| imm_data += frag->size; |
| } |
| } |
| swqe->immediate_data_length = skb->len; |
| dev_kfree_skb(skb); |
| } |
| |
| static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps) |
| { |
| struct tcphdr *tcp; |
| u32 tmp; |
| |
| if ((skb->protocol == htons(ETH_P_IP)) && |
| (ip_hdr(skb)->protocol == IPPROTO_TCP)) { |
| tcp = (struct tcphdr *)(skb_network_header(skb) + |
| (ip_hdr(skb)->ihl * 4)); |
| tmp = (tcp->source + (tcp->dest << 16)) % 31; |
| tmp += ip_hdr(skb)->daddr % 31; |
| return tmp % num_qps; |
| } else |
| return 0; |
| } |
| |
| static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev) |
| { |
| struct ehea_port *port = netdev_priv(dev); |
| struct ehea_swqe *swqe; |
| unsigned long flags; |
| u32 lkey; |
| int swqe_index; |
| struct ehea_port_res *pr; |
| |
| pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)]; |
| |
| if (!spin_trylock(&pr->xmit_lock)) |
| return NETDEV_TX_BUSY; |
| |
| if (pr->queue_stopped) { |
| spin_unlock(&pr->xmit_lock); |
| return NETDEV_TX_BUSY; |
| } |
| |
| swqe = ehea_get_swqe(pr->qp, &swqe_index); |
| memset(swqe, 0, SWQE_HEADER_SIZE); |
| atomic_dec(&pr->swqe_avail); |
| |
| if (skb->len <= SWQE3_MAX_IMM) { |
| u32 sig_iv = port->sig_comp_iv; |
| u32 swqe_num = pr->swqe_id_counter; |
| ehea_xmit3(skb, dev, swqe); |
| swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE) |
| | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num); |
| if (pr->swqe_ll_count >= (sig_iv - 1)) { |
| swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL, |
| sig_iv); |
| swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION; |
| pr->swqe_ll_count = 0; |
| } else |
| pr->swqe_ll_count += 1; |
| } else { |
| swqe->wr_id = |
| EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE) |
| | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter) |
| | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1) |
| | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index); |
| pr->sq_skba.arr[pr->sq_skba.index] = skb; |
| |
| pr->sq_skba.index++; |
| pr->sq_skba.index &= (pr->sq_skba.len - 1); |
| |
| lkey = pr->send_mr.lkey; |
| ehea_xmit2(skb, dev, swqe, lkey); |
| swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION; |
| } |
| pr->swqe_id_counter += 1; |
| |
| if (port->vgrp && vlan_tx_tag_present(skb)) { |
| swqe->tx_control |= EHEA_SWQE_VLAN_INSERT; |
| swqe->vlan_tag = vlan_tx_tag_get(skb); |
| } |
| |
| if (netif_msg_tx_queued(port)) { |
| ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr); |
| ehea_dump(swqe, 512, "swqe"); |
| } |
| |
| if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) { |
| netif_stop_queue(dev); |
| swqe->tx_control |= EHEA_SWQE_PURGE; |
| } |
| |
| ehea_post_swqe(pr->qp, swqe); |
| pr->tx_packets++; |
| |
| if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) { |
| spin_lock_irqsave(&pr->netif_queue, flags); |
| if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) { |
| pr->p_stats.queue_stopped++; |
| netif_stop_queue(dev); |
| pr->queue_stopped = 1; |
| } |
| spin_unlock_irqrestore(&pr->netif_queue, flags); |
| } |
| dev->trans_start = jiffies; |
| spin_unlock(&pr->xmit_lock); |
| |
| return NETDEV_TX_OK; |
| } |
| |
| static void ehea_vlan_rx_register(struct net_device *dev, |
| struct vlan_group *grp) |
| { |
| struct ehea_port *port = netdev_priv(dev); |
| struct ehea_adapter *adapter = port->adapter; |
| struct hcp_ehea_port_cb1 *cb1; |
| u64 hret; |
| |
| port->vgrp = grp; |
| |
| cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
| if (!cb1) { |
| ehea_error("no mem for cb1"); |
| goto out; |
| } |
| |
| hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id, |
| H_PORT_CB1, H_PORT_CB1_ALL, cb1); |
| if (hret != H_SUCCESS) |
| ehea_error("modify_ehea_port failed"); |
| |
| kfree(cb1); |
| out: |
| return; |
| } |
| |
| static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid) |
| { |
| struct ehea_port *port = netdev_priv(dev); |
| struct ehea_adapter *adapter = port->adapter; |
| struct hcp_ehea_port_cb1 *cb1; |
| int index; |
| u64 hret; |
| |
| cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
| if (!cb1) { |
| ehea_error("no mem for cb1"); |
| goto out; |
| } |
| |
| hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id, |
| H_PORT_CB1, H_PORT_CB1_ALL, cb1); |
| if (hret != H_SUCCESS) { |
| ehea_error("query_ehea_port failed"); |
| goto out; |
| } |
| |
| index = (vid / 64); |
| cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F))); |
| |
| hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id, |
| H_PORT_CB1, H_PORT_CB1_ALL, cb1); |
| if (hret != H_SUCCESS) |
| ehea_error("modify_ehea_port failed"); |
| out: |
| kfree(cb1); |
| return; |
| } |
| |
| static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid) |
| { |
| struct ehea_port *port = netdev_priv(dev); |
| struct ehea_adapter *adapter = port->adapter; |
| struct hcp_ehea_port_cb1 *cb1; |
| int index; |
| u64 hret; |
| |
| vlan_group_set_device(port->vgrp, vid, NULL); |
| |
| cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
| if (!cb1) { |
| ehea_error("no mem for cb1"); |
| goto out; |
| } |
| |
| hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id, |
| H_PORT_CB1, H_PORT_CB1_ALL, cb1); |
| if (hret != H_SUCCESS) { |
| ehea_error("query_ehea_port failed"); |
| goto out; |
| } |
| |
| index = (vid / 64); |
| cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F))); |
| |
| hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id, |
| H_PORT_CB1, H_PORT_CB1_ALL, cb1); |
| if (hret != H_SUCCESS) |
| ehea_error("modify_ehea_port failed"); |
| out: |
| kfree(cb1); |
| return; |
| } |
| |
| int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp) |
| { |
| int ret = -EIO; |
| u64 hret; |
| u16 dummy16 = 0; |
| u64 dummy64 = 0; |
| struct hcp_modify_qp_cb0 *cb0; |
| |
| cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
| if (!cb0) { |
| ret = -ENOMEM; |
| goto out; |
| } |
| |
| hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, |
| EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); |
| if (hret != H_SUCCESS) { |
| ehea_error("query_ehea_qp failed (1)"); |
| goto out; |
| } |
| |
| cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED; |
| hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, |
| EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0, |
| &dummy64, &dummy64, &dummy16, &dummy16); |
| if (hret != H_SUCCESS) { |
| ehea_error("modify_ehea_qp failed (1)"); |
| goto out; |
| } |
| |
| hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, |
| EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); |
| if (hret != H_SUCCESS) { |
| ehea_error("query_ehea_qp failed (2)"); |
| goto out; |
| } |
| |
| cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED; |
| hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, |
| EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0, |
| &dummy64, &dummy64, &dummy16, &dummy16); |
| if (hret != H_SUCCESS) { |
| ehea_error("modify_ehea_qp failed (2)"); |
| goto out; |
| } |
| |
| hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, |
| EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); |
| if (hret != H_SUCCESS) { |
| ehea_error("query_ehea_qp failed (3)"); |
| goto out; |
| } |
| |
| cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND; |
| hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, |
| EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0, |
| &dummy64, &dummy64, &dummy16, &dummy16); |
| if (hret != H_SUCCESS) { |
| ehea_error("modify_ehea_qp failed (3)"); |
| goto out; |
| } |
| |
| hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, |
| EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); |
| if (hret != H_SUCCESS) { |
| ehea_error("query_ehea_qp failed (4)"); |
| goto out; |
| } |
| |
| ret = 0; |
| out: |
| kfree(cb0); |
| return ret; |
| } |
| |
| static int ehea_port_res_setup(struct ehea_port *port, int def_qps, |
| int add_tx_qps) |
| { |
| int ret, i; |
| struct port_res_cfg pr_cfg, pr_cfg_small_rx; |
| enum ehea_eq_type eq_type = EHEA_EQ; |
| |
| port->qp_eq = ehea_create_eq(port->adapter, eq_type, |
| EHEA_MAX_ENTRIES_EQ, 1); |
| if (!port->qp_eq) { |
| ret = -EINVAL; |
| ehea_error("ehea_create_eq failed (qp_eq)"); |
| goto out_kill_eq; |
| } |
| |
| pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries; |
| pr_cfg.max_entries_scq = sq_entries * 2; |
| pr_cfg.max_entries_sq = sq_entries; |
| pr_cfg.max_entries_rq1 = rq1_entries; |
| pr_cfg.max_entries_rq2 = rq2_entries; |
| pr_cfg.max_entries_rq3 = rq3_entries; |
| |
| pr_cfg_small_rx.max_entries_rcq = 1; |
| pr_cfg_small_rx.max_entries_scq = sq_entries; |
| pr_cfg_small_rx.max_entries_sq = sq_entries; |
| pr_cfg_small_rx.max_entries_rq1 = 1; |
| pr_cfg_small_rx.max_entries_rq2 = 1; |
| pr_cfg_small_rx.max_entries_rq3 = 1; |
| |
| for (i = 0; i < def_qps; i++) { |
| ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i); |
| if (ret) |
| goto out_clean_pr; |
| } |
| for (i = def_qps; i < def_qps + add_tx_qps; i++) { |
| ret = ehea_init_port_res(port, &port->port_res[i], |
| &pr_cfg_small_rx, i); |
| if (ret) |
| goto out_clean_pr; |
| } |
| |
| return 0; |
| |
| out_clean_pr: |
| while (--i >= 0) |
| ehea_clean_portres(port, &port->port_res[i]); |
| |
| out_kill_eq: |
| ehea_destroy_eq(port->qp_eq); |
| return ret; |
| } |
| |
| static int ehea_clean_all_portres(struct ehea_port *port) |
| { |
| int ret = 0; |
| int i; |
| |
| for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) |
| ret |= ehea_clean_portres(port, &port->port_res[i]); |
| |
| ret |= ehea_destroy_eq(port->qp_eq); |
| |
| return ret; |
| } |
| |
| static void ehea_remove_adapter_mr(struct ehea_adapter *adapter) |
| { |
| if (adapter->active_ports) |
| return; |
| |
| ehea_rem_mr(&adapter->mr); |
| } |
| |
| static int ehea_add_adapter_mr(struct ehea_adapter *adapter) |
| { |
| if (adapter->active_ports) |
| return 0; |
| |
| return ehea_reg_kernel_mr(adapter, &adapter->mr); |
| } |
| |
| static int ehea_up(struct net_device *dev) |
| { |
| int ret, i; |
| struct ehea_port *port = netdev_priv(dev); |
| |
| if (port->state == EHEA_PORT_UP) |
| return 0; |
| |
| mutex_lock(&ehea_fw_handles.lock); |
| |
| ret = ehea_port_res_setup(port, port->num_def_qps, |
| port->num_add_tx_qps); |
| if (ret) { |
| ehea_error("port_res_failed"); |
| goto out; |
| } |
| |
| /* Set default QP for this port */ |
| ret = ehea_configure_port(port); |
| if (ret) { |
| ehea_error("ehea_configure_port failed. ret:%d", ret); |
| goto out_clean_pr; |
| } |
| |
| ret = ehea_reg_interrupts(dev); |
| if (ret) { |
| ehea_error("reg_interrupts failed. ret:%d", ret); |
| goto out_clean_pr; |
| } |
| |
| for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { |
| ret = ehea_activate_qp(port->adapter, port->port_res[i].qp); |
| if (ret) { |
| ehea_error("activate_qp failed"); |
| goto out_free_irqs; |
| } |
| } |
| |
| for (i = 0; i < port->num_def_qps; i++) { |
| ret = ehea_fill_port_res(&port->port_res[i]); |
| if (ret) { |
| ehea_error("out_free_irqs"); |
| goto out_free_irqs; |
| } |
| } |
| |
| mutex_lock(&ehea_bcmc_regs.lock); |
| |
| ret = ehea_broadcast_reg_helper(port, H_REG_BCMC); |
| if (ret) { |
| ret = -EIO; |
| goto out_free_irqs; |
| } |
| |
| port->state = EHEA_PORT_UP; |
| |
| ret = 0; |
| goto out; |
| |
| out_free_irqs: |
| ehea_free_interrupts(dev); |
| |
| out_clean_pr: |
| ehea_clean_all_portres(port); |
| out: |
| if (ret) |
| ehea_info("Failed starting %s. ret=%i", dev->name, ret); |
| |
| ehea_update_bcmc_registrations(); |
| mutex_unlock(&ehea_bcmc_regs.lock); |
| |
| ehea_update_firmware_handles(); |
| mutex_unlock(&ehea_fw_handles.lock); |
| |
| return ret; |
| } |
| |
| static void port_napi_disable(struct ehea_port *port) |
| { |
| int i; |
| |
| for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) |
| napi_disable(&port->port_res[i].napi); |
| } |
| |
| static void port_napi_enable(struct ehea_port *port) |
| { |
| int i; |
| |
| for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) |
| napi_enable(&port->port_res[i].napi); |
| } |
| |
| static int ehea_open(struct net_device *dev) |
| { |
| int ret; |
| struct ehea_port *port = netdev_priv(dev); |
| |
| mutex_lock(&port->port_lock); |
| |
| if (netif_msg_ifup(port)) |
| ehea_info("enabling port %s", dev->name); |
| |
| ret = ehea_up(dev); |
| if (!ret) { |
| port_napi_enable(port); |
| netif_start_queue(dev); |
| } |
| |
| mutex_unlock(&port->port_lock); |
| |
| return ret; |
| } |
| |
| static int ehea_down(struct net_device *dev) |
| { |
| int ret; |
| struct ehea_port *port = netdev_priv(dev); |
| |
| if (port->state == EHEA_PORT_DOWN) |
| return 0; |
| |
| mutex_lock(&ehea_fw_handles.lock); |
| |
| mutex_lock(&ehea_bcmc_regs.lock); |
| ehea_drop_multicast_list(dev); |
| ehea_broadcast_reg_helper(port, H_DEREG_BCMC); |
| |
| ehea_free_interrupts(dev); |
| |
| port->state = EHEA_PORT_DOWN; |
| |
| ehea_update_bcmc_registrations(); |
| mutex_unlock(&ehea_bcmc_regs.lock); |
| |
| ret = ehea_clean_all_portres(port); |
| if (ret) |
| ehea_info("Failed freeing resources for %s. ret=%i", |
| dev->name, ret); |
| |
| ehea_update_firmware_handles(); |
| mutex_unlock(&ehea_fw_handles.lock); |
| |
| return ret; |
| } |
| |
| static int ehea_stop(struct net_device *dev) |
| { |
| int ret; |
| struct ehea_port *port = netdev_priv(dev); |
| |
| if (netif_msg_ifdown(port)) |
| ehea_info("disabling port %s", dev->name); |
| |
| flush_scheduled_work(); |
| mutex_lock(&port->port_lock); |
| netif_stop_queue(dev); |
| port_napi_disable(port); |
| ret = ehea_down(dev); |
| mutex_unlock(&port->port_lock); |
| return ret; |
| } |
| |
| static void ehea_purge_sq(struct ehea_qp *orig_qp) |
| { |
| struct ehea_qp qp = *orig_qp; |
| struct ehea_qp_init_attr *init_attr = &qp.init_attr; |
| struct ehea_swqe *swqe; |
| int wqe_index; |
| int i; |
| |
| for (i = 0; i < init_attr->act_nr_send_wqes; i++) { |
| swqe = ehea_get_swqe(&qp, &wqe_index); |
| swqe->tx_control |= EHEA_SWQE_PURGE; |
| } |
| } |
| |
| static void ehea_flush_sq(struct ehea_port *port) |
| { |
| int i; |
| |
| for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { |
| struct ehea_port_res *pr = &port->port_res[i]; |
| int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count; |
| int k = 0; |
| while (atomic_read(&pr->swqe_avail) < swqe_max) { |
| msleep(5); |
| if (++k == 20) |
| break; |
| } |
| } |
| } |
| |
| int ehea_stop_qps(struct net_device *dev) |
| { |
| struct ehea_port *port = netdev_priv(dev); |
| struct ehea_adapter *adapter = port->adapter; |
| struct hcp_modify_qp_cb0 *cb0; |
| int ret = -EIO; |
| int dret; |
| int i; |
| u64 hret; |
| u64 dummy64 = 0; |
| u16 dummy16 = 0; |
| |
| cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
| if (!cb0) { |
| ret = -ENOMEM; |
| goto out; |
| } |
| |
| for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) { |
| struct ehea_port_res *pr = &port->port_res[i]; |
| struct ehea_qp *qp = pr->qp; |
| |
| /* Purge send queue */ |
| ehea_purge_sq(qp); |
| |
| /* Disable queue pair */ |
| hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, |
| EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), |
| cb0); |
| if (hret != H_SUCCESS) { |
| ehea_error("query_ehea_qp failed (1)"); |
| goto out; |
| } |
| |
| cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8; |
| cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED; |
| |
| hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, |
| EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, |
| 1), cb0, &dummy64, |
| &dummy64, &dummy16, &dummy16); |
| if (hret != H_SUCCESS) { |
| ehea_error("modify_ehea_qp failed (1)"); |
| goto out; |
| } |
| |
| hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, |
| EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), |
| cb0); |
| if (hret != H_SUCCESS) { |
| ehea_error("query_ehea_qp failed (2)"); |
| goto out; |
| } |
| |
| /* deregister shared memory regions */ |
| dret = ehea_rem_smrs(pr); |
| if (dret) { |
| ehea_error("unreg shared memory region failed"); |
| goto out; |
| } |
| } |
| |
| ret = 0; |
| out: |
| kfree(cb0); |
| |
| return ret; |
| } |
| |
| void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr) |
| { |
| struct ehea_qp qp = *orig_qp; |
| struct ehea_qp_init_attr *init_attr = &qp.init_attr; |
| struct ehea_rwqe *rwqe; |
| struct sk_buff **skba_rq2 = pr->rq2_skba.arr; |
| struct sk_buff **skba_rq3 = pr->rq3_skba.arr; |
| struct sk_buff *skb; |
| u32 lkey = pr->recv_mr.lkey; |
| |
| |
| int i; |
| int index; |
| |
| for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) { |
| rwqe = ehea_get_next_rwqe(&qp, 2); |
| rwqe->sg_list[0].l_key = lkey; |
| index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id); |
| skb = skba_rq2[index]; |
| if (skb) |
| rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data); |
| } |
| |
| for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) { |
| rwqe = ehea_get_next_rwqe(&qp, 3); |
| rwqe->sg_list[0].l_key = lkey; |
| index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id); |
| skb = skba_rq3[index]; |
| if (skb) |
| rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data); |
| } |
| } |
| |
| int ehea_restart_qps(struct net_device *dev) |
| { |
| struct ehea_port *port = netdev_priv(dev); |
| struct ehea_adapter *adapter = port->adapter; |
| int ret = 0; |
| int i; |
| |
| struct hcp_modify_qp_cb0 *cb0; |
| u64 hret; |
| u64 dummy64 = 0; |
| u16 dummy16 = 0; |
| |
| cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
| if (!cb0) { |
| ret = -ENOMEM; |
| goto out; |
| } |
| |
| for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) { |
| struct ehea_port_res *pr = &port->port_res[i]; |
| struct ehea_qp *qp = pr->qp; |
| |
| ret = ehea_gen_smrs(pr); |
| if (ret) { |
| ehea_error("creation of shared memory regions failed"); |
| goto out; |
| } |
| |
| ehea_update_rqs(qp, pr); |
| |
| /* Enable queue pair */ |
| hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, |
| EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), |
| cb0); |
| if (hret != H_SUCCESS) { |
| ehea_error("query_ehea_qp failed (1)"); |
| goto out; |
| } |
| |
| cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8; |
| cb0->qp_ctl_reg |= H_QP_CR_ENABLED; |
| |
| hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, |
| EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, |
| 1), cb0, &dummy64, |
| &dummy64, &dummy16, &dummy16); |
| if (hret != H_SUCCESS) { |
| ehea_error("modify_ehea_qp failed (1)"); |
| goto out; |
| } |
| |
| hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, |
| EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), |
| cb0); |
| if (hret != H_SUCCESS) { |
| ehea_error("query_ehea_qp failed (2)"); |
| goto out; |
| } |
| |
| /* refill entire queue */ |
| ehea_refill_rq1(pr, pr->rq1_skba.index, 0); |
| ehea_refill_rq2(pr, 0); |
| ehea_refill_rq3(pr, 0); |
| } |
| out: |
| kfree(cb0); |
| |
| return ret; |
| } |
| |
| static void ehea_reset_port(struct work_struct *work) |
| { |
| int ret; |
| struct ehea_port *port = |
| container_of(work, struct ehea_port, reset_task); |
| struct net_device *dev = port->netdev; |
| |
| port->resets++; |
| mutex_lock(&port->port_lock); |
| netif_stop_queue(dev); |
| |
| port_napi_disable(port); |
| |
| ehea_down(dev); |
| |
| ret = ehea_up(dev); |
| if (ret) |
| goto out; |
| |
| ehea_set_multicast_list(dev); |
| |
| if (netif_msg_timer(port)) |
| ehea_info("Device %s resetted successfully", dev->name); |
| |
| port_napi_enable(port); |
| |
| netif_wake_queue(dev); |
| out: |
| mutex_unlock(&port->port_lock); |
| return; |
| } |
| |
| static void ehea_rereg_mrs(struct work_struct *work) |
| { |
| int ret, i; |
| struct ehea_adapter *adapter; |
| |
| mutex_lock(&dlpar_mem_lock); |
| ehea_info("LPAR memory enlarged - re-initializing driver"); |
| |
| list_for_each_entry(adapter, &adapter_list, list) |
| if (adapter->active_ports) { |
| /* Shutdown all ports */ |
| for (i = 0; i < EHEA_MAX_PORTS; i++) { |
| struct ehea_port *port = adapter->port[i]; |
| struct net_device *dev; |
| |
| if (!port) |
| continue; |
| |
| dev = port->netdev; |
| |
| if (dev->flags & IFF_UP) { |
| mutex_lock(&port->port_lock); |
| netif_stop_queue(dev); |
| ehea_flush_sq(port); |
| ret = ehea_stop_qps(dev); |
| if (ret) { |
| mutex_unlock(&port->port_lock); |
| goto out; |
| } |
| port_napi_disable(port); |
| mutex_unlock(&port->port_lock); |
| } |
| } |
| |
| /* Unregister old memory region */ |
| ret = ehea_rem_mr(&adapter->mr); |
| if (ret) { |
| ehea_error("unregister MR failed - driver" |
| " inoperable!"); |
| goto out; |
| } |
| } |
| |
| ehea_destroy_busmap(); |
| ret = ehea_create_busmap(); |
| if (ret) { |
| ehea_error("creating ehea busmap failed"); |
| goto out; |
| } |
| |
| clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags); |
| |
| list_for_each_entry(adapter, &adapter_list, list) |
| if (adapter->active_ports) { |
| /* Register new memory region */ |
| ret = ehea_reg_kernel_mr(adapter, &adapter->mr); |
| if (ret) { |
| ehea_error("register MR failed - driver" |
| " inoperable!"); |
| goto out; |
| } |
| |
| /* Restart all ports */ |
| for (i = 0; i < EHEA_MAX_PORTS; i++) { |
| struct ehea_port *port = adapter->port[i]; |
| |
| if (port) { |
| struct net_device *dev = port->netdev; |
| |
| if (dev->flags & IFF_UP) { |
| mutex_lock(&port->port_lock); |
| port_napi_enable(port); |
| ret = ehea_restart_qps(dev); |
| if (!ret) |
| netif_wake_queue(dev); |
| mutex_unlock(&port->port_lock); |
| } |
| } |
| } |
| } |
| mutex_unlock(&dlpar_mem_lock); |
| ehea_info("re-initializing driver complete"); |
| out: |
| return; |
| } |
| |
| static void ehea_tx_watchdog(struct net_device *dev) |
| { |
| struct ehea_port *port = netdev_priv(dev); |
| |
| if (netif_carrier_ok(dev) && |
| !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags)) |
| schedule_work(&port->reset_task); |
| } |
| |
| int ehea_sense_adapter_attr(struct ehea_adapter *adapter) |
| { |
| struct hcp_query_ehea *cb; |
| u64 hret; |
| int ret; |
| |
| cb = kzalloc(PAGE_SIZE, GFP_KERNEL); |
| if (!cb) { |
| ret = -ENOMEM; |
| goto out; |
| } |
| |
| hret = ehea_h_query_ehea(adapter->handle, cb); |
| |
| if (hret != H_SUCCESS) { |
| ret = -EIO; |
| goto out_herr; |
| } |
| |
| adapter->max_mc_mac = cb->max_mc_mac - 1; |
| ret = 0; |
| |
| out_herr: |
| kfree(cb); |
| out: |
| return ret; |
| } |
| |
| int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo) |
| { |
| struct hcp_ehea_port_cb4 *cb4; |
| u64 hret; |
| int ret = 0; |
| |
| *jumbo = 0; |
| |
| /* (Try to) enable *jumbo frames */ |
| cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL); |
| if (!cb4) { |
| ehea_error("no mem for cb4"); |
| ret = -ENOMEM; |
| goto out; |
| } else { |
| hret = ehea_h_query_ehea_port(port->adapter->handle, |
| port->logical_port_id, |
| H_PORT_CB4, |
| H_PORT_CB4_JUMBO, cb4); |
| if (hret == H_SUCCESS) { |
| if (cb4->jumbo_frame) |
| *jumbo = 1; |
| else { |
| cb4->jumbo_frame = 1; |
| hret = ehea_h_modify_ehea_port(port->adapter-> |
| handle, |
| port-> |
| logical_port_id, |
| H_PORT_CB4, |
| H_PORT_CB4_JUMBO, |
| cb4); |
| if (hret == H_SUCCESS) |
| *jumbo = 1; |
| } |
| } else |
| ret = -EINVAL; |
| |
| kfree(cb4); |
| } |
| out: |
| return ret; |
| } |
| |
| static ssize_t ehea_show_port_id(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev); |
| return sprintf(buf, "%d", port->logical_port_id); |
| } |
| |
| static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id, |
| NULL); |
| |
| static void __devinit logical_port_release(struct device *dev) |
| { |
| struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev); |
| of_node_put(port->ofdev.node); |
| } |
| |
| static struct device *ehea_register_port(struct ehea_port *port, |
| struct device_node *dn) |
| { |
| int ret; |
| |
| port->ofdev.node = of_node_get(dn); |
| port->ofdev.dev.parent = &port->adapter->ofdev->dev; |
| port->ofdev.dev.bus = &ibmebus_bus_type; |
| |
| sprintf(port->ofdev.dev.bus_id, "port%d", port_name_cnt++); |
| port->ofdev.dev.release = logical_port_release; |
| |
| ret = of_device_register(&port->ofdev); |
| if (ret) { |
| ehea_error("failed to register device. ret=%d", ret); |
| goto out; |
| } |
| |
| ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id); |
| if (ret) { |
| ehea_error("failed to register attributes, ret=%d", ret); |
| goto out_unreg_of_dev; |
| } |
| |
| return &port->ofdev.dev; |
| |
| out_unreg_of_dev: |
| of_device_unregister(&port->ofdev); |
| out: |
| return NULL; |
| } |
| |
| static void ehea_unregister_port(struct ehea_port *port) |
| { |
| device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id); |
| of_device_unregister(&port->ofdev); |
| } |
| |
| struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter, |
| u32 logical_port_id, |
| struct device_node *dn) |
| { |
| int ret; |
| struct net_device *dev; |
| struct ehea_port *port; |
| struct device *port_dev; |
| int jumbo; |
| |
| /* allocate memory for the port structures */ |
| dev = alloc_etherdev(sizeof(struct ehea_port)); |
| |
| if (!dev) { |
| ehea_error("no mem for net_device"); |
| ret = -ENOMEM; |
| goto out_err; |
| } |
| |
| port = netdev_priv(dev); |
| |
| mutex_init(&port->port_lock); |
| port->state = EHEA_PORT_DOWN; |
| port->sig_comp_iv = sq_entries / 10; |
| |
| port->adapter = adapter; |
| port->netdev = dev; |
| port->logical_port_id = logical_port_id; |
| |
| port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT); |
| |
| port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL); |
| if (!port->mc_list) { |
| ret = -ENOMEM; |
| goto out_free_ethdev; |
| } |
| |
| INIT_LIST_HEAD(&port->mc_list->list); |
| |
| ret = ehea_sense_port_attr(port); |
| if (ret) |
| goto out_free_mc_list; |
| |
| port_dev = ehea_register_port(port, dn); |
| if (!port_dev) |
| goto out_free_mc_list; |
| |
| SET_NETDEV_DEV(dev, port_dev); |
| |
| /* initialize net_device structure */ |
| memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN); |
| |
| dev->open = ehea_open; |
| #ifdef CONFIG_NET_POLL_CONTROLLER |
| dev->poll_controller = ehea_netpoll; |
| #endif |
| dev->stop = ehea_stop; |
| dev->hard_start_xmit = ehea_start_xmit; |
| dev->get_stats = ehea_get_stats; |
| dev->set_multicast_list = ehea_set_multicast_list; |
| dev->set_mac_address = ehea_set_mac_addr; |
| dev->change_mtu = ehea_change_mtu; |
| dev->vlan_rx_register = ehea_vlan_rx_register; |
| dev->vlan_rx_add_vid = ehea_vlan_rx_add_vid; |
| dev->vlan_rx_kill_vid = ehea_vlan_rx_kill_vid; |
| dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO |
| | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX |
| | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER |
| | NETIF_F_LLTX; |
| dev->tx_timeout = &ehea_tx_watchdog; |
| dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT; |
| |
| INIT_WORK(&port->reset_task, ehea_reset_port); |
| ehea_set_ethtool_ops(dev); |
| |
| ret = register_netdev(dev); |
| if (ret) { |
| ehea_error("register_netdev failed. ret=%d", ret); |
| goto out_unreg_port; |
| } |
| |
| port->lro_max_aggr = lro_max_aggr; |
| |
| ret = ehea_get_jumboframe_status(port, &jumbo); |
| if (ret) |
| ehea_error("failed determining jumbo frame status for %s", |
| port->netdev->name); |
| |
| ehea_info("%s: Jumbo frames are %sabled", dev->name, |
| jumbo == 1 ? "en" : "dis"); |
| |
| adapter->active_ports++; |
| |
| return port; |
| |
| out_unreg_port: |
| ehea_unregister_port(port); |
| |
| out_free_mc_list: |
| kfree(port->mc_list); |
| |
| out_free_ethdev: |
| free_netdev(dev); |
| |
| out_err: |
| ehea_error("setting up logical port with id=%d failed, ret=%d", |
| logical_port_id, ret); |
| return NULL; |
| } |
| |
| static void ehea_shutdown_single_port(struct ehea_port *port) |
| { |
| struct ehea_adapter *adapter = port->adapter; |
| unregister_netdev(port->netdev); |
| ehea_unregister_port(port); |
| kfree(port->mc_list); |
| free_netdev(port->netdev); |
| adapter->active_ports--; |
| } |
| |
| static int ehea_setup_ports(struct ehea_adapter *adapter) |
| { |
| struct device_node *lhea_dn; |
| struct device_node *eth_dn = NULL; |
| |
| const u32 *dn_log_port_id; |
| int i = 0; |
| |
| lhea_dn = adapter->ofdev->node; |
| while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) { |
| |
| dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no", |
| NULL); |
| if (!dn_log_port_id) { |
| ehea_error("bad device node: eth_dn name=%s", |
| eth_dn->full_name); |
| continue; |
| } |
| |
| if (ehea_add_adapter_mr(adapter)) { |
| ehea_error("creating MR failed"); |
| of_node_put(eth_dn); |
| return -EIO; |
| } |
| |
| adapter->port[i] = ehea_setup_single_port(adapter, |
| *dn_log_port_id, |
| eth_dn); |
| if (adapter->port[i]) |
| ehea_info("%s -> logical port id #%d", |
| adapter->port[i]->netdev->name, |
| *dn_log_port_id); |
| else |
| ehea_remove_adapter_mr(adapter); |
| |
| i++; |
| }; |
| return 0; |
| } |
| |
| static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter, |
| u32 logical_port_id) |
| { |
| struct device_node *lhea_dn; |
| struct device_node *eth_dn = NULL; |
| const u32 *dn_log_port_id; |
| |
| lhea_dn = adapter->ofdev->node; |
| while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) { |
| |
| dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no", |
| NULL); |
| if (dn_log_port_id) |
| if (*dn_log_port_id == logical_port_id) |
| return eth_dn; |
| }; |
| |
| return NULL; |
| } |
| |
| static ssize_t ehea_probe_port(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct ehea_adapter *adapter = dev->driver_data; |
| struct ehea_port *port; |
| struct device_node *eth_dn = NULL; |
| int i; |
| |
| u32 logical_port_id; |
| |
| sscanf(buf, "%d", &logical_port_id); |
| |
| port = ehea_get_port(adapter, logical_port_id); |
| |
| if (port) { |
| ehea_info("adding port with logical port id=%d failed. port " |
| "already configured as %s.", logical_port_id, |
| port->netdev->name); |
| return -EINVAL; |
| } |
| |
| eth_dn = ehea_get_eth_dn(adapter, logical_port_id); |
| |
| if (!eth_dn) { |
| ehea_info("no logical port with id %d found", logical_port_id); |
| return -EINVAL; |
| } |
| |
| if (ehea_add_adapter_mr(adapter)) { |
| ehea_error("creating MR failed"); |
| return -EIO; |
| } |
| |
| port = ehea_setup_single_port(adapter, logical_port_id, eth_dn); |
| |
| of_node_put(eth_dn); |
| |
| if (port) { |
| for (i = 0; i < EHEA_MAX_PORTS; i++) |
| if (!adapter->port[i]) { |
| adapter->port[i] = port; |
| break; |
| } |
| |
| ehea_info("added %s (logical port id=%d)", port->netdev->name, |
| logical_port_id); |
| } else { |
| ehea_remove_adapter_mr(adapter); |
| return -EIO; |
| } |
| |
| return (ssize_t) count; |
| } |
| |
| static ssize_t ehea_remove_port(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct ehea_adapter *adapter = dev->driver_data; |
| struct ehea_port *port; |
| int i; |
| u32 logical_port_id; |
| |
| sscanf(buf, "%d", &logical_port_id); |
| |
| port = ehea_get_port(adapter, logical_port_id); |
| |
| if (port) { |
| ehea_info("removed %s (logical port id=%d)", port->netdev->name, |
| logical_port_id); |
| |
| ehea_shutdown_single_port(port); |
| |
| for (i = 0; i < EHEA_MAX_PORTS; i++) |
| if (adapter->port[i] == port) { |
| adapter->port[i] = NULL; |
| break; |
| } |
| } else { |
| ehea_error("removing port with logical port id=%d failed. port " |
| "not configured.", logical_port_id); |
| return -EINVAL; |
| } |
| |
| ehea_remove_adapter_mr(adapter); |
| |
| return (ssize_t) count; |
| } |
| |
| static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port); |
| static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port); |
| |
| int ehea_create_device_sysfs(struct of_device *dev) |
| { |
| int ret = device_create_file(&dev->dev, &dev_attr_probe_port); |
| if (ret) |
| goto out; |
| |
| ret = device_create_file(&dev->dev, &dev_attr_remove_port); |
| out: |
| return ret; |
| } |
| |
| void ehea_remove_device_sysfs(struct of_device *dev) |
| { |
| device_remove_file(&dev->dev, &dev_attr_probe_port); |
| device_remove_file(&dev->dev, &dev_attr_remove_port); |
| } |
| |
| static int __devinit ehea_probe_adapter(struct of_device *dev, |
| const struct of_device_id *id) |
| { |
| struct ehea_adapter *adapter; |
| const u64 *adapter_handle; |
| int ret; |
| |
| if (!dev || !dev->node) { |
| ehea_error("Invalid ibmebus device probed"); |
| return -EINVAL; |
| } |
| mutex_lock(&ehea_fw_handles.lock); |
| |
| adapter = kzalloc(sizeof(*adapter), GFP_KERNEL); |
| if (!adapter) { |
| ret = -ENOMEM; |
| dev_err(&dev->dev, "no mem for ehea_adapter\n"); |
| goto out; |
| } |
| |
| list_add(&adapter->list, &adapter_list); |
| |
| adapter->ofdev = dev; |
| |
| adapter_handle = of_get_property(dev->node, "ibm,hea-handle", |
| NULL); |
| if (adapter_handle) |
| adapter->handle = *adapter_handle; |
| |
| if (!adapter->handle) { |
| dev_err(&dev->dev, "failed getting handle for adapter" |
| " '%s'\n", dev->node->full_name); |
| ret = -ENODEV; |
| goto out_free_ad; |
| } |
| |
| adapter->pd = EHEA_PD_ID; |
| |
| dev->dev.driver_data = adapter; |
| |
| |
| /* initialize adapter and ports */ |
| /* get adapter properties */ |
| ret = ehea_sense_adapter_attr(adapter); |
| if (ret) { |
| dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret); |
| goto out_free_ad; |
| } |
| |
| adapter->neq = ehea_create_eq(adapter, |
| EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1); |
| if (!adapter->neq) { |
| ret = -EIO; |
| dev_err(&dev->dev, "NEQ creation failed\n"); |
| goto out_free_ad; |
| } |
| |
| tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet, |
| (unsigned long)adapter); |
| |
| ret = ibmebus_request_irq(adapter->neq->attr.ist1, |
| ehea_interrupt_neq, IRQF_DISABLED, |
| "ehea_neq", adapter); |
| if (ret) { |
| dev_err(&dev->dev, "requesting NEQ IRQ failed\n"); |
| goto out_kill_eq; |
| } |
| |
| ret = ehea_create_device_sysfs(dev); |
| if (ret) |
| goto out_free_irq; |
| |
| ret = ehea_setup_ports(adapter); |
| if (ret) { |
| dev_err(&dev->dev, "setup_ports failed\n"); |
| goto out_rem_dev_sysfs; |
| } |
| |
| ret = 0; |
| goto out; |
| |
| out_rem_dev_sysfs: |
| ehea_remove_device_sysfs(dev); |
| |
| out_free_irq: |
| ibmebus_free_irq(adapter->neq->attr.ist1, adapter); |
| |
| out_kill_eq: |
| ehea_destroy_eq(adapter->neq); |
| |
| out_free_ad: |
| kfree(adapter); |
| |
| out: |
| ehea_update_firmware_handles(); |
| mutex_unlock(&ehea_fw_handles.lock); |
| return ret; |
| } |
| |
| static int __devexit ehea_remove(struct of_device *dev) |
| { |
| struct ehea_adapter *adapter = dev->dev.driver_data; |
| int i; |
| |
| for (i = 0; i < EHEA_MAX_PORTS; i++) |
| if (adapter->port[i]) { |
| ehea_shutdown_single_port(adapter->port[i]); |
| adapter->port[i] = NULL; |
| } |
| |
| ehea_remove_device_sysfs(dev); |
| |
| flush_scheduled_work(); |
| |
| mutex_lock(&ehea_fw_handles.lock); |
| |
| ibmebus_free_irq(adapter->neq->attr.ist1, adapter); |
| tasklet_kill(&adapter->neq_tasklet); |
| |
| ehea_destroy_eq(adapter->neq); |
| ehea_remove_adapter_mr(adapter); |
| list_del(&adapter->list); |
| kfree(adapter); |
| |
| ehea_update_firmware_handles(); |
| mutex_unlock(&ehea_fw_handles.lock); |
| |
| return 0; |
| } |
| |
| void ehea_crash_handler(void) |
| { |
| int i; |
| |
| if (ehea_fw_handles.arr) |
| for (i = 0; i < ehea_fw_handles.num_entries; i++) |
| ehea_h_free_resource(ehea_fw_handles.arr[i].adh, |
| ehea_fw_handles.arr[i].fwh, |
| FORCE_FREE); |
| |
| if (ehea_bcmc_regs.arr) |
| for (i = 0; i < ehea_bcmc_regs.num_entries; i++) |
| ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh, |
| ehea_bcmc_regs.arr[i].port_id, |
| ehea_bcmc_regs.arr[i].reg_type, |
| ehea_bcmc_regs.arr[i].macaddr, |
| 0, H_DEREG_BCMC); |
| } |
| |
| static int ehea_mem_notifier(struct notifier_block *nb, |
| unsigned long action, void *data) |
| { |
| switch (action) { |
| case MEM_OFFLINE: |
| ehea_info("memory has been removed"); |
| ehea_rereg_mrs(NULL); |
| break; |
| default: |
| break; |
| } |
| return NOTIFY_OK; |
| } |
| |
| static struct notifier_block ehea_mem_nb = { |
| .notifier_call = ehea_mem_notifier, |
| }; |
| |
| static int ehea_reboot_notifier(struct notifier_block *nb, |
| unsigned long action, void *unused) |
| { |
| if (action == SYS_RESTART) { |
| ehea_info("Reboot: freeing all eHEA resources"); |
| ibmebus_unregister_driver(&ehea_driver); |
| } |
| return NOTIFY_DONE; |
| } |
| |
| static struct notifier_block ehea_reboot_nb = { |
| .notifier_call = ehea_reboot_notifier, |
| }; |
| |
| static int check_module_parm(void) |
| { |
| int ret = 0; |
| |
| if ((rq1_entries < EHEA_MIN_ENTRIES_QP) || |
| (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) { |
| ehea_info("Bad parameter: rq1_entries"); |
| ret = -EINVAL; |
| } |
| if ((rq2_entries < EHEA_MIN_ENTRIES_QP) || |
| (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) { |
| ehea_info("Bad parameter: rq2_entries"); |
| ret = -EINVAL; |
| } |
| if ((rq3_entries < EHEA_MIN_ENTRIES_QP) || |
| (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) { |
| ehea_info("Bad parameter: rq3_entries"); |
| ret = -EINVAL; |
| } |
| if ((sq_entries < EHEA_MIN_ENTRIES_QP) || |
| (sq_entries > EHEA_MAX_ENTRIES_SQ)) { |
| ehea_info("Bad parameter: sq_entries"); |
| ret = -EINVAL; |
| } |
| |
| return ret; |
| } |
| |
| static ssize_t ehea_show_capabilities(struct device_driver *drv, |
| char *buf) |
| { |
| return sprintf(buf, "%d", EHEA_CAPABILITIES); |
| } |
| |
| static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH, |
| ehea_show_capabilities, NULL); |
| |
| int __init ehea_module_init(void) |
| { |
| int ret; |
| |
| printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n", |
| DRV_VERSION); |
| |
| |
| INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs); |
| memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles)); |
| memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs)); |
| |
| mutex_init(&ehea_fw_handles.lock); |
| mutex_init(&ehea_bcmc_regs.lock); |
| |
| ret = check_module_parm(); |
| if (ret) |
| goto out; |
| |
| ret = ehea_create_busmap(); |
| if (ret) |
| goto out; |
| |
| ret = register_reboot_notifier(&ehea_reboot_nb); |
| if (ret) |
| ehea_info("failed registering reboot notifier"); |
| |
| ret = register_memory_notifier(&ehea_mem_nb); |
| if (ret) |
| ehea_info("failed registering memory remove notifier"); |
| |
| ret = crash_shutdown_register(&ehea_crash_handler); |
| if (ret) |
| ehea_info("failed registering crash handler"); |
| |
| ret = ibmebus_register_driver(&ehea_driver); |
| if (ret) { |
| ehea_error("failed registering eHEA device driver on ebus"); |
| goto out2; |
| } |
| |
| ret = driver_create_file(&ehea_driver.driver, |
| &driver_attr_capabilities); |
| if (ret) { |
| ehea_error("failed to register capabilities attribute, ret=%d", |
| ret); |
| goto out3; |
| } |
| |
| return ret; |
| |
| out3: |
| ibmebus_unregister_driver(&ehea_driver); |
| out2: |
| unregister_memory_notifier(&ehea_mem_nb); |
| unregister_reboot_notifier(&ehea_reboot_nb); |
| crash_shutdown_unregister(&ehea_crash_handler); |
| out: |
| return ret; |
| } |
| |
| static void __exit ehea_module_exit(void) |
| { |
| int ret; |
| |
| flush_scheduled_work(); |
| driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities); |
| ibmebus_unregister_driver(&ehea_driver); |
| unregister_reboot_notifier(&ehea_reboot_nb); |
| ret = crash_shutdown_unregister(&ehea_crash_handler); |
| if (ret) |
| ehea_info("failed unregistering crash handler"); |
| unregister_memory_notifier(&ehea_mem_nb); |
| kfree(ehea_fw_handles.arr); |
| kfree(ehea_bcmc_regs.arr); |
| ehea_destroy_busmap(); |
| } |
| |
| module_init(ehea_module_init); |
| module_exit(ehea_module_exit); |