--- /dev/null
+/*
+ * linux/drivers/net/ethernet/ibm/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.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/device.h>
+#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/slab.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 <linux/prefetch.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 = 1;
+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_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 = [7..14]. Default = "
+ __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
+MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
+ "[2^x - 1], x = [7..14]. Default = "
+ __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
+MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
+ "[2^x - 1], x = [7..14]. Default = "
+ __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
+MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue "
+ "[2^x - 1], x = [7..14]. Default = "
+ __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
+MODULE_PARM_DESC(use_mcs, " Multiple receive queues, 1: enable, 0: disable, "
+ "Default = 1");
+
+static int port_name_cnt;
+static LIST_HEAD(adapter_list);
+static unsigned long ehea_driver_flags;
+static DEFINE_MUTEX(dlpar_mem_lock);
+static struct ehea_fw_handle_array ehea_fw_handles;
+static struct ehea_bcmc_reg_array ehea_bcmc_regs;
+
+
+static int ehea_probe_adapter(struct platform_device *dev);
+
+static int ehea_remove(struct platform_device *dev);
+
+static const struct of_device_id ehea_module_device_table[] = {
+ {
+ .name = "lhea",
+ .compatible = "IBM,lhea",
+ },
+ {
+ .type = "network",
+ .compatible = "IBM,lhea-ethernet",
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, ehea_module_device_table);
+
+static const struct of_device_id ehea_device_table[] = {
+ {
+ .name = "lhea",
+ .compatible = "IBM,lhea",
+ },
+ {},
+};
+
+static struct platform_driver ehea_driver = {
+ .driver = {
+ .name = "ehea",
+ .owner = THIS_MODULE,
+ .of_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) {
+ pr_info("%s adr=%p ofs=%04x %016llx %016llx\n",
+ msg, deb, x, *((u64 *)&deb[0]), *((u64 *)&deb[8]));
+ deb += 16;
+ }
+}
+
+static void ehea_schedule_port_reset(struct ehea_port *port)
+{
+ if (!test_bit(__EHEA_DISABLE_PORT_RESET, &port->flags))
+ schedule_work(&port->reset_task);
+}
+
+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 */
+ mutex_lock(&ehea_fw_handles.lock);
+
+ 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;
+ }
+ }
+
+ 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 = kcalloc(num_fw_handles, sizeof(*arr), GFP_KERNEL);
+ if (!arr)
+ goto out; /* Keep the existing array */
+ } else
+ goto out_update;
+
+ list_for_each_entry(adapter, &adapter_list, list) {
+ if (num_adapters == 0)
+ break;
+
+ for (k = 0; k < EHEA_MAX_PORTS; k++) {
+ struct ehea_port *port = adapter->port[k];
+
+ if (!port || (port->state != EHEA_PORT_UP) ||
+ (num_ports == 0))
+ continue;
+
+ for (l = 0; l < port->num_def_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;
+ num_ports--;
+ }
+
+ 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;
+ }
+ num_adapters--;
+ }
+
+out_update:
+ kfree(ehea_fw_handles.arr);
+ ehea_fw_handles.arr = arr;
+ ehea_fw_handles.num_entries = i;
+out:
+ mutex_unlock(&ehea_fw_handles.lock);
+}
+
+static void ehea_update_bcmc_registrations(void)
+{
+ unsigned long flags;
+ 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;
+
+ spin_lock_irqsave(&ehea_bcmc_regs.lock, flags);
+
+ /* 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 = kcalloc(num_registrations, sizeof(*arr), GFP_ATOMIC);
+ if (!arr)
+ goto out; /* 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;
+
+ if (num_registrations == 0)
+ goto out_update;
+
+ 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;
+ num_registrations -= 2;
+
+ list_for_each_entry(mc_entry,
+ &port->mc_list->list, list) {
+ if (num_registrations == 0)
+ goto out_update;
+
+ arr[i].adh = adapter->handle;
+ arr[i].port_id = port->logical_port_id;
+ arr[i].reg_type = EHEA_BCMC_MULTICAST |
+ EHEA_BCMC_UNTAGGED;
+ if (mc_entry->macaddr == 0)
+ arr[i].reg_type |= EHEA_BCMC_SCOPE_ALL;
+ 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_MULTICAST |
+ EHEA_BCMC_VLANID_ALL;
+ if (mc_entry->macaddr == 0)
+ arr[i].reg_type |= EHEA_BCMC_SCOPE_ALL;
+ arr[i++].macaddr = mc_entry->macaddr;
+ num_registrations -= 2;
+ }
+ }
+ }
+
+out_update:
+ kfree(ehea_bcmc_regs.arr);
+ ehea_bcmc_regs.arr = arr;
+ ehea_bcmc_regs.num_entries = i;
+out:
+ spin_unlock_irqrestore(&ehea_bcmc_regs.lock, flags);
+}
+
+static struct rtnl_link_stats64 *ehea_get_stats64(struct net_device *dev,
+ struct rtnl_link_stats64 *stats)
+{
+ struct ehea_port *port = netdev_priv(dev);
+ u64 rx_packets = 0, tx_packets = 0, rx_bytes = 0, tx_bytes = 0;
+ int i;
+
+ for (i = 0; i < port->num_def_qps; i++) {
+ rx_packets += port->port_res[i].rx_packets;
+ rx_bytes += port->port_res[i].rx_bytes;
+ }
+
+ for (i = 0; i < port->num_def_qps; i++) {
+ tx_packets += port->port_res[i].tx_packets;
+ tx_bytes += port->port_res[i].tx_bytes;
+ }
+
+ stats->tx_packets = tx_packets;
+ stats->rx_bytes = rx_bytes;
+ stats->tx_bytes = tx_bytes;
+ stats->rx_packets = rx_packets;
+
+ stats->multicast = port->stats.multicast;
+ stats->rx_errors = port->stats.rx_errors;
+ return stats;
+}
+
+static void ehea_update_stats(struct work_struct *work)
+{
+ struct ehea_port *port =
+ container_of(work, struct ehea_port, stats_work.work);
+ struct net_device *dev = port->netdev;
+ struct rtnl_link_stats64 *stats = &port->stats;
+ struct hcp_ehea_port_cb2 *cb2;
+ u64 hret;
+
+ cb2 = (void *)get_zeroed_page(GFP_KERNEL);
+ if (!cb2) {
+ netdev_err(dev, "No mem for cb2. Some interface statistics were not updated\n");
+ goto resched;
+ }
+
+ 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) {
+ netdev_err(dev, "query_ehea_port failed\n");
+ goto out_herr;
+ }
+
+ if (netif_msg_hw(port))
+ ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
+
+ stats->multicast = cb2->rxmcp;
+ stats->rx_errors = cb2->rxuerr;
+
+out_herr:
+ free_page((unsigned long)cb2);
+resched:
+ schedule_delayed_work(&port->stats_work,
+ round_jiffies_relative(msecs_to_jiffies(1000)));
+}
+
+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;
+ break;
+ }
+ }
+ index--;
+ index &= max_index_mask;
+ adder++;
+ }
+
+ if (adder == 0)
+ return;
+
+ /* Ring doorbell */
+ ehea_update_rq1a(pr->qp, adder);
+}
+
+static void ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
+{
+ struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
+ struct net_device *dev = pr->port->netdev;
+ int i;
+
+ if (nr_rq1a > pr->rq1_skba.len) {
+ netdev_err(dev, "NR_RQ1A bigger than skb array len\n");
+ return;
+ }
+
+ for (i = 0; i < nr_rq1a; i++) {
+ skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
+ if (!skb_arr_rq1[i])
+ break;
+ }
+ /* Ring doorbell */
+ ehea_update_rq1a(pr->qp, i - 1);
+}
+
+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;
+
+ skb = netdev_alloc_skb_ip_align(dev, packet_size);
+ if (!skb) {
+ q_skba->os_skbs = fill_wqes - i;
+ if (q_skba->os_skbs == q_skba->len - 2) {
+ netdev_info(pr->port->netdev,
+ "rq%i ran dry - no mem for skb\n",
+ rq_nr);
+ ret = -ENOMEM;
+ }
+ break;
+ }
+
+ skb_arr[index] = skb;
+ tmp_addr = ehea_map_vaddr(skb->data);
+ if (tmp_addr == -1) {
+ dev_consume_skb_any(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);
+}
+
+
+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);
+}
+
+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,
+ struct ehea_port_res *pr)
+{
+ int length = cqe->num_bytes_transfered - 4; /*remove CRC */
+
+ skb_put(skb, length);
+ skb->protocol = eth_type_trans(skb, dev);
+
+ /* The packet was not an IPV4 packet so a complemented checksum was
+ calculated. The value is found in the Internet Checksum field. */
+ if (cqe->status & EHEA_CQE_BLIND_CKSUM) {
+ skb->ip_summed = CHECKSUM_COMPLETE;
+ skb->csum = csum_unfold(~cqe->inet_checksum_value);
+ } else
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+
+ skb_record_rx_queue(skb, pr - &pr->port->port_res[0]);
+}
+
+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];
+ if (pref) {
+ 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];
+ if (pref) {
+ 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)) {
+ pr_err("Critical receive error for QP %d. Resetting port.\n",
+ pr->qp->init_attr.qp_nr);
+ ehea_dump(cqe, sizeof(*cqe), "CQE");
+ }
+ ehea_schedule_port_reset(pr->port);
+ return 1;
+ }
+
+ return 0;
+}
+
+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;
+ u64 processed_bytes = 0;
+ 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)) {
+ netif_info(port, rx_err, dev,
+ "LL rq1: skb=NULL\n");
+
+ 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, pr);
+ } else if (rq == 2) {
+ /* RQ2 */
+ skb = get_skb_by_index(skb_arr_rq2,
+ skb_arr_rq2_len, cqe);
+ if (unlikely(!skb)) {
+ netif_err(port, rx_err, dev,
+ "rq2: skb=NULL\n");
+ break;
+ }
+ ehea_fill_skb(dev, skb, cqe, pr);
+ processed_rq2++;
+ } else {
+ /* RQ3 */
+ skb = get_skb_by_index(skb_arr_rq3,
+ skb_arr_rq3_len, cqe);
+ if (unlikely(!skb)) {
+ netif_err(port, rx_err, dev,
+ "rq3: skb=NULL\n");
+ break;
+ }
+ ehea_fill_skb(dev, skb, cqe, pr);
+ processed_rq3++;
+ }
+
+ processed_bytes += skb->len;
+
+ if (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT)
+ __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
+ cqe->vlan_tag);
+
+ napi_gro_receive(&pr->napi, skb);
+ } 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);
+ }
+
+ pr->rx_packets += processed;
+ pr->rx_bytes += processed_bytes;
+
+ ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
+ ehea_refill_rq2(pr, processed_rq2);
+ ehea_refill_rq3(pr, processed_rq3);
+
+ return processed;
+}
+
+#define SWQE_RESTART_CHECK 0xdeadbeaff00d0000ull
+
+static void reset_sq_restart_flag(struct ehea_port *port)
+{
+ int i;
+
+ for (i = 0; i < port->num_def_qps; i++) {
+ struct ehea_port_res *pr = &port->port_res[i];
+ pr->sq_restart_flag = 0;
+ }
+ wake_up(&port->restart_wq);
+}
+
+static void check_sqs(struct ehea_port *port)
+{
+ struct ehea_swqe *swqe;
+ int swqe_index;
+ int i, k;
+
+ for (i = 0; i < port->num_def_qps; i++) {
+ struct ehea_port_res *pr = &port->port_res[i];
+ int ret;
+ k = 0;
+ swqe = ehea_get_swqe(pr->qp, &swqe_index);
+ memset(swqe, 0, SWQE_HEADER_SIZE);
+ atomic_dec(&pr->swqe_avail);
+
+ swqe->tx_control |= EHEA_SWQE_PURGE;
+ swqe->wr_id = SWQE_RESTART_CHECK;
+ swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
+ swqe->tx_control |= EHEA_SWQE_IMM_DATA_PRESENT;
+ swqe->immediate_data_length = 80;
+
+ ehea_post_swqe(pr->qp, swqe);
+
+ ret = wait_event_timeout(port->restart_wq,
+ pr->sq_restart_flag == 0,
+ msecs_to_jiffies(100));
+
+ if (!ret) {
+ pr_err("HW/SW queues out of sync\n");
+ ehea_schedule_port_reset(pr->port);
+ return;
+ }
+ }
+}
+
+
+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;
+ struct netdev_queue *txq = netdev_get_tx_queue(pr->port->netdev,
+ pr - &pr->port->port_res[0]);
+
+ cqe = ehea_poll_cq(send_cq);
+ while (cqe && (quota > 0)) {
+ ehea_inc_cq(send_cq);
+
+ cqe_counter++;
+ rmb();
+
+ if (cqe->wr_id == SWQE_RESTART_CHECK) {
+ pr->sq_restart_flag = 1;
+ swqe_av++;
+ break;
+ }
+
+ if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
+ pr_err("Bad send completion status=0x%04X\n",
+ cqe->status);
+
+ if (netif_msg_tx_err(pr->port))
+ ehea_dump(cqe, sizeof(*cqe), "Send CQE");
+
+ if (cqe->status & EHEA_CQE_STAT_RESET_MASK) {
+ pr_err("Resetting port\n");
+ ehea_schedule_port_reset(pr->port);
+ 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_consume_skb_any(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);
+
+ if (unlikely(netif_tx_queue_stopped(txq) &&
+ (atomic_read(&pr->swqe_avail) >= pr->swqe_refill_th))) {
+ __netif_tx_lock(txq, smp_processor_id());
+ if (netif_tx_queue_stopped(txq) &&
+ (atomic_read(&pr->swqe_avail) >= pr->swqe_refill_th))
+ netif_tx_wake_queue(txq);
+ __netif_tx_unlock(txq);
+ }
+
+ wake_up(&pr->port->swqe_avail_wq);
+
+ return cqe;
+}
+
+#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 wqe_index;
+ int rx = 0;
+
+ cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
+ rx += ehea_proc_rwqes(dev, pr, budget - rx);
+
+ while (rx != budget) {
+ napi_complete(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);
+ rmb();
+ cqe = ehea_poll_rq1(pr->qp, &wqe_index);
+ cqe_skb = ehea_poll_cq(pr->send_cq);
+
+ if (!cqe && !cqe_skb)
+ return rx;
+
+ if (!napi_reschedule(napi))
+ return rx;
+
+ cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
+ rx += ehea_proc_rwqes(dev, pr, budget - rx);
+ }
+
+ 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++)
+ napi_schedule(&port->port_res[i].napi);
+}
+#endif
+
+static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
+{
+ struct ehea_port_res *pr = param;
+
+ napi_schedule(&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;
+ u64 resource_type, aer, aerr;
+ int reset_port = 0;
+
+ eqe = ehea_poll_eq(port->qp_eq);
+
+ while (eqe) {
+ qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
+ pr_err("QP aff_err: entry=0x%llx, token=0x%x\n",
+ eqe->entry, qp_token);
+
+ qp = port->port_res[qp_token].qp;
+
+ resource_type = ehea_error_data(port->adapter, qp->fw_handle,
+ &aer, &aerr);
+
+ if (resource_type == EHEA_AER_RESTYPE_QP) {
+ if ((aer & EHEA_AER_RESET_MASK) ||
+ (aerr & EHEA_AERR_RESET_MASK))
+ reset_port = 1;
+ } else
+ reset_port = 1; /* Reset in case of CQ or EQ error */
+
+ eqe = ehea_poll_eq(port->qp_eq);
+ }
+
+ if (reset_port) {
+ pr_err("Resetting port\n");
+ ehea_schedule_port_reset(port);
+ }
+
+ 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 = (void *)get_zeroed_page(GFP_ATOMIC);
+ if (!cb0) {
+ pr_err("no mem for cb0\n");
+ 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;
+ }
+
+ ret = 0;
+out_free:
+ if (ret || netif_msg_probe(port))
+ ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
+ free_page((unsigned long)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 = (void *)get_zeroed_page(GFP_KERNEL);
+ if (!cb4) {
+ pr_err("no mem for cb4\n");
+ 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 {
+ pr_err("Failed sensing port speed\n");
+ ret = -EIO;
+ }
+ } else {
+ if (hret == H_AUTHORITY) {
+ pr_info("Hypervisor denied setting port speed\n");
+ ret = -EPERM;
+ } else {
+ ret = -EIO;
+ pr_err("Failed setting port speed\n");
+ }
+ }
+ if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
+ netif_carrier_on(port->netdev);
+
+ free_page((unsigned long)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;
+ struct net_device *dev;
+
+ ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
+ portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
+ port = ehea_get_port(adapter, portnum);
+ dev = port->netdev;
+
+ switch (ec) {
+ case EHEA_EC_PORTSTATE_CHG: /* port state change */
+
+ if (!port) {
+ netdev_err(dev, "unknown portnum %x\n", portnum);
+ break;
+ }
+
+ if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
+ if (!netif_carrier_ok(dev)) {
+ ret = ehea_sense_port_attr(port);
+ if (ret) {
+ netdev_err(dev, "failed resensing port attributes\n");
+ break;
+ }
+
+ netif_info(port, link, dev,
+ "Logical port up: %dMbps %s Duplex\n",
+ port->port_speed,
+ port->full_duplex == 1 ?
+ "Full" : "Half");
+
+ netif_carrier_on(dev);
+ netif_wake_queue(dev);
+ }
+ } else
+ if (netif_carrier_ok(dev)) {
+ netif_info(port, link, dev,
+ "Logical port down\n");
+ netif_carrier_off(dev);
+ netif_tx_disable(dev);
+ }
+
+ if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
+ port->phy_link = EHEA_PHY_LINK_UP;
+ netif_info(port, link, dev,
+ "Physical port up\n");
+ if (prop_carrier_state)
+ netif_carrier_on(dev);
+ } else {
+ port->phy_link = EHEA_PHY_LINK_DOWN;
+ netif_info(port, link, dev,
+ "Physical port down\n");
+ if (prop_carrier_state)
+ netif_carrier_off(dev);
+ }
+
+ if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
+ netdev_info(dev,
+ "External switch port is primary port\n");
+ else
+ netdev_info(dev,
+ "External switch port is backup port\n");
+
+ break;
+ case EHEA_EC_ADAPTER_MALFUNC:
+ netdev_err(dev, "Adapter malfunction\n");
+ break;
+ case EHEA_EC_PORT_MALFUNC:
+ netdev_info(dev, "Port malfunction\n");
+ netif_carrier_off(dev);
+ netif_tx_disable(dev);
+ break;
+ default:
+ netdev_err(dev, "unknown event code %x, eqe=0x%llX\n", 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);
+ pr_debug("eqe=%p\n", eqe);
+
+ while (eqe) {
+ pr_debug("*eqe=%lx\n", (unsigned long) eqe->entry);
+ ehea_parse_eqe(adapter, eqe->entry);
+ eqe = ehea_poll_eq(adapter->neq);
+ pr_debug("next eqe=%p\n", 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;
+
+ ehea_init_fill_rq1(pr, pr->rq1_skba.len);
+
+ 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,
+ 0, port->int_aff_name, port);
+ if (ret) {
+ netdev_err(dev, "failed registering irq for qp_aff_irq_handler:ist=%X\n",
+ port->qp_eq->attr.ist1);
+ goto out_free_qpeq;
+ }
+
+ netif_info(port, ifup, dev,
+ "irq_handle 0x%X for function qp_aff_irq_handler registered\n",
+ port->qp_eq->attr.ist1);
+
+
+ for (i = 0; i < port->num_def_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,
+ 0, pr->int_send_name, pr);
+ if (ret) {
+ netdev_err(dev, "failed registering irq for ehea_queue port_res_nr:%d, ist=%X\n",
+ i, pr->eq->attr.ist1);
+ goto out_free_req;
+ }
+ netif_info(port, ifup, dev,
+ "irq_handle 0x%X for function ehea_queue_int %d registered\n",
+ 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; i++) {
+ pr = &port->port_res[i];
+ ibmebus_free_irq(pr->eq->attr.ist1, pr);
+ netif_info(port, intr, dev,
+ "free send irq for res %d with handle 0x%X\n",
+ i, pr->eq->attr.ist1);
+ }
+
+ /* associated events */
+ ibmebus_free_irq(port->qp_eq->attr.ist1, port);
+ netif_info(port, intr, dev,
+ "associated event interrupt for handle 0x%X freed\n",
+ 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 = (void *)get_zeroed_page(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:
+ free_page((unsigned long)cb0);
+out:
+ return ret;
+}
+
+static 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:
+ pr_err("Generating SMRS failed\n");
+ return -EIO;
+}
+
+static 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 = vzalloc(arr_size);
+ if (!q_skba->arr)
+ return -ENOMEM;
+
+ 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;
+ u64 tx_bytes, rx_bytes, tx_packets, rx_packets;
+
+ tx_bytes = pr->tx_bytes;
+ tx_packets = pr->tx_packets;
+ rx_bytes = pr->rx_bytes;
+ rx_packets = pr->rx_packets;
+
+ memset(pr, 0, sizeof(struct ehea_port_res));
+
+ pr->tx_bytes = rx_bytes;
+ pr->tx_packets = tx_packets;
+ pr->rx_bytes = rx_bytes;
+ pr->rx_packets = rx_packets;
+
+ pr->port = port;
+
+ pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
+ if (!pr->eq) {
+ pr_err("create_eq failed (eq)\n");
+ 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) {
+ pr_err("create_cq failed (cq_recv)\n");
+ 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) {
+ pr_err("create_cq failed (cq_send)\n");
+ goto out_free;
+ }
+
+ if (netif_msg_ifup(port))
+ pr_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d\n",
+ 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;
+ pr_err("no mem for ehea_qp_init_attr\n");
+ 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) {
+ pr_err("create_qp failed\n");
+ ret = -EIO;
+ goto out_free;
+ }
+
+ if (netif_msg_ifup(port))
+ pr_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\n",
+ 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);
+
+ 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;
+
+ if (pr->qp)
+ netif_napi_del(&pr->napi);
+
+ 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;
+}
+
+static void write_swqe2_immediate(struct sk_buff *skb, struct ehea_swqe *swqe,
+ u32 lkey)
+{
+ int skb_data_size = skb_headlen(skb);
+ u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
+ struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
+ unsigned int immediate_len = SWQE2_MAX_IMM;
+
+ swqe->descriptors = 0;
+
+ if (skb_is_gso(skb)) {
+ swqe->tx_control |= EHEA_SWQE_TSO;
+ swqe->mss = skb_shinfo(skb)->gso_size;
+ /*
+ * For TSO packets we only copy the headers into the
+ * immediate area.
+ */
+ immediate_len = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
+ }
+
+ if (skb_is_gso(skb) || skb_data_size >= SWQE2_MAX_IMM) {
+ skb_copy_from_linear_data(skb, imm_data, immediate_len);
+ swqe->immediate_data_length = immediate_len;
+
+ if (skb_data_size > immediate_len) {
+ sg1entry->l_key = lkey;
+ sg1entry->len = skb_data_size - immediate_len;
+ sg1entry->vaddr =
+ ehea_map_vaddr(skb->data + immediate_len);
+ 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;
+ sg1entry_contains_frag_data = 0;
+
+ write_swqe2_immediate(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 = skb_frag_size(frag);
+ sg1entry->vaddr =
+ ehea_map_vaddr(skb_frag_address(frag));
+ 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 = skb_frag_size(frag);
+ sgentry->vaddr = ehea_map_vaddr(skb_frag_address(frag));
+ 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) {
+ pr_err("%sregistering bc address failed (tagged)\n",
+ 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) {
+ pr_err("%sregistering bc address failed (vlan)\n",
+ 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 = (void *)get_zeroed_page(GFP_KERNEL);
+ if (!cb0) {
+ pr_err("no mem for cb0\n");
+ 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);
+
+ /* Deregister old MAC in pHYP */
+ if (port->state == EHEA_PORT_UP) {
+ 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 */
+ if (port->state == EHEA_PORT_UP) {
+ ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
+ if (ret)
+ goto out_upregs;
+ }
+
+ ret = 0;
+
+out_upregs:
+ ehea_update_bcmc_registrations();
+out_free:
+ free_page((unsigned long)cb0);
+out:
+ return ret;
+}
+
+static void ehea_promiscuous_error(u64 hret, int enable)
+{
+ if (hret == H_AUTHORITY)
+ pr_info("Hypervisor denied %sabling promiscuous mode\n",
+ enable == 1 ? "en" : "dis");
+ else
+ pr_err("failed %sabling promiscuous mode\n",
+ 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)
+ return;
+
+ cb7 = (void *)get_zeroed_page(GFP_ATOMIC);
+ if (!cb7) {
+ pr_err("no mem for cb7\n");
+ 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:
+ free_page((unsigned long)cb7);
+}
+
+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_MULTICAST | EHEA_BCMC_UNTAGGED;
+ if (mc_mac_addr == 0)
+ reg_type |= EHEA_BCMC_SCOPE_ALL;
+
+ 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_MULTICAST | EHEA_BCMC_VLANID_ALL;
+ if (mc_mac_addr == 0)
+ reg_type |= EHEA_BCMC_SCOPE_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) {
+ pr_err("failed deregistering mcast MAC\n");
+ 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
+ netdev_err(dev,
+ "failed enabling IFF_ALLMULTI\n");
+ }
+ } else {
+ if (!enable) {
+ /* Disable ALLMULTI */
+ hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
+ if (!hret)
+ port->allmulti = 0;
+ else
+ netdev_err(dev,
+ "failed disabling IFF_ALLMULTI\n");
+ }
+ }
+}
+
+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)
+ 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 {
+ pr_err("failed registering mcast MAC\n");
+ kfree(ehea_mcl_entry);
+ }
+}
+
+static void ehea_set_multicast_list(struct net_device *dev)
+{
+ struct ehea_port *port = netdev_priv(dev);
+ struct netdev_hw_addr *ha;
+ int ret;
+
+ ehea_promiscuous(dev, !!(dev->flags & IFF_PROMISC));
+
+ if (dev->flags & IFF_ALLMULTI) {
+ ehea_allmulti(dev, 1);
+ goto out;
+ }
+ ehea_allmulti(dev, 0);
+
+ if (!netdev_mc_empty(dev)) {
+ 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 (netdev_mc_count(dev) > port->adapter->max_mc_mac) {
+ pr_info("Mcast registration limit reached (0x%llx). Use ALLMULTI!\n",
+ port->adapter->max_mc_mac);
+ goto out;
+ }
+
+ netdev_for_each_mc_addr(ha, dev)
+ ehea_add_multicast_entry(port, ha->addr);
+
+ }
+out:
+ ehea_update_bcmc_registrations();
+}
+
+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 xmit_common(struct sk_buff *skb, struct ehea_swqe *swqe)
+{
+ swqe->tx_control |= EHEA_SWQE_IMM_DATA_PRESENT | EHEA_SWQE_CRC;
+
+ if (vlan_get_protocol(skb) != htons(ETH_P_IP))
+ return;
+
+ if (skb->ip_summed == CHECKSUM_PARTIAL)
+ swqe->tx_control |= EHEA_SWQE_IP_CHECKSUM;
+
+ swqe->ip_start = skb_network_offset(skb);
+ swqe->ip_end = swqe->ip_start + ip_hdrlen(skb) - 1;
+
+ switch (ip_hdr(skb)->protocol) {
+ case IPPROTO_UDP:
+ if (skb->ip_summed == CHECKSUM_PARTIAL)
+ swqe->tx_control |= EHEA_SWQE_TCP_CHECKSUM;
+
+ swqe->tcp_offset = swqe->ip_end + 1 +
+ offsetof(struct udphdr, check);
+ break;
+
+ case IPPROTO_TCP:
+ if (skb->ip_summed == CHECKSUM_PARTIAL)
+ swqe->tx_control |= EHEA_SWQE_TCP_CHECKSUM;
+
+ swqe->tcp_offset = swqe->ip_end + 1 +
+ offsetof(struct tcphdr, check);
+ break;
+ }
+}
+
+static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
+ struct ehea_swqe *swqe, u32 lkey)
+{
+ swqe->tx_control |= EHEA_SWQE_DESCRIPTORS_PRESENT;
+
+ xmit_common(skb, swqe);
+
+ write_swqe2_data(skb, dev, swqe, lkey);
+}
+
+static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
+ struct ehea_swqe *swqe)
+{
+ u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
+
+ xmit_common(skb, swqe);
+
+ if (!skb->data_len)
+ skb_copy_from_linear_data(skb, imm_data, skb->len);
+ else
+ skb_copy_bits(skb, 0, imm_data, skb->len);
+
+ swqe->immediate_data_length = skb->len;
+ dev_consume_skb_any(skb);
+}
+
+static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct ehea_port *port = netdev_priv(dev);
+ struct ehea_swqe *swqe;
+ u32 lkey;
+ int swqe_index;
+ struct ehea_port_res *pr;
+ struct netdev_queue *txq;
+
+ pr = &port->port_res[skb_get_queue_mapping(skb)];
+ txq = netdev_get_tx_queue(dev, skb_get_queue_mapping(skb));
+
+ swqe = ehea_get_swqe(pr->qp, &swqe_index);
+ memset(swqe, 0, SWQE_HEADER_SIZE);
+ atomic_dec(&pr->swqe_avail);
+
+ if (skb_vlan_tag_present(skb)) {
+ swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
+ swqe->vlan_tag = skb_vlan_tag_get(skb);
+ }
+
+ pr->tx_packets++;
+ pr->tx_bytes += skb->len;
+
+ 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;
+
+ netif_info(port, tx_queued, dev,
+ "post swqe on QP %d\n", pr->qp->init_attr.qp_nr);
+ if (netif_msg_tx_queued(port))
+ ehea_dump(swqe, 512, "swqe");
+
+ if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
+ netif_tx_stop_queue(txq);
+ swqe->tx_control |= EHEA_SWQE_PURGE;
+ }
+
+ ehea_post_swqe(pr->qp, swqe);
+
+ if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
+ pr->p_stats.queue_stopped++;
+ netif_tx_stop_queue(txq);
+ }
+
+ return NETDEV_TX_OK;
+}
+
+static int ehea_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
+{
+ struct ehea_port *port = netdev_priv(dev);
+ struct ehea_adapter *adapter = port->adapter;
+ struct hcp_ehea_port_cb1 *cb1;
+ int index;
+ u64 hret;
+ int err = 0;
+
+ cb1 = (void *)get_zeroed_page(GFP_KERNEL);
+ if (!cb1) {
+ pr_err("no mem for cb1\n");
+ err = -ENOMEM;
+ 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) {
+ pr_err("query_ehea_port failed\n");
+ err = -EINVAL;
+ 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) {
+ pr_err("modify_ehea_port failed\n");
+ err = -EINVAL;
+ }
+out:
+ free_page((unsigned long)cb1);
+ return err;
+}
+
+static int ehea_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
+{
+ struct ehea_port *port = netdev_priv(dev);
+ struct ehea_adapter *adapter = port->adapter;
+ struct hcp_ehea_port_cb1 *cb1;
+ int index;
+ u64 hret;
+ int err = 0;
+
+ cb1 = (void *)get_zeroed_page(GFP_KERNEL);
+ if (!cb1) {
+ pr_err("no mem for cb1\n");
+ err = -ENOMEM;
+ 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) {
+ pr_err("query_ehea_port failed\n");
+ err = -EINVAL;
+ 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) {
+ pr_err("modify_ehea_port failed\n");
+ err = -EINVAL;
+ }
+out:
+ free_page((unsigned long)cb1);
+ return err;
+}
+
+static 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 = (void *)get_zeroed_page(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) {
+ pr_err("query_ehea_qp failed (1)\n");
+ 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) {
+ pr_err("modify_ehea_qp failed (1)\n");
+ 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) {
+ pr_err("query_ehea_qp failed (2)\n");
+ 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) {
+ pr_err("modify_ehea_qp failed (2)\n");
+ 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) {
+ pr_err("query_ehea_qp failed (3)\n");
+ 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) {
+ pr_err("modify_ehea_qp failed (3)\n");
+ 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) {
+ pr_err("query_ehea_qp failed (4)\n");
+ goto out;
+ }
+
+ ret = 0;
+out:
+ free_page((unsigned long)cb0);
+ return ret;
+}
+
+static int ehea_port_res_setup(struct ehea_port *port, int def_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;
+ pr_err("ehea_create_eq failed (qp_eq)\n");
+ 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; 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; 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;
+
+ ret = ehea_port_res_setup(port, port->num_def_qps);
+ if (ret) {
+ netdev_err(dev, "port_res_failed\n");
+ goto out;
+ }
+
+ /* Set default QP for this port */
+ ret = ehea_configure_port(port);
+ if (ret) {
+ netdev_err(dev, "ehea_configure_port failed. ret:%d\n", ret);
+ goto out_clean_pr;
+ }
+
+ ret = ehea_reg_interrupts(dev);
+ if (ret) {
+ netdev_err(dev, "reg_interrupts failed. ret:%d\n", ret);
+ goto out_clean_pr;
+ }
+
+ for (i = 0; i < port->num_def_qps; i++) {
+ ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
+ if (ret) {
+ netdev_err(dev, "activate_qp failed\n");
+ goto out_free_irqs;
+ }
+ }
+
+ for (i = 0; i < port->num_def_qps; i++) {
+ ret = ehea_fill_port_res(&port->port_res[i]);
+ if (ret) {
+ netdev_err(dev, "out_free_irqs\n");
+ goto out_free_irqs;
+ }
+ }
+
+ 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)
+ netdev_info(dev, "Failed starting. ret=%i\n", ret);
+
+ ehea_update_bcmc_registrations();
+ ehea_update_firmware_handles();
+
+ return ret;
+}
+
+static void port_napi_disable(struct ehea_port *port)
+{
+ int i;
+
+ for (i = 0; i < port->num_def_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; 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);
+
+ netif_info(port, ifup, dev, "enabling port\n");
+
+ ret = ehea_up(dev);
+ if (!ret) {
+ port_napi_enable(port);
+ netif_tx_start_all_queues(dev);
+ }
+
+ mutex_unlock(&port->port_lock);
+ schedule_delayed_work(&port->stats_work,
+ round_jiffies_relative(msecs_to_jiffies(1000)));
+
+ 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;
+
+ ehea_drop_multicast_list(dev);
+ ehea_allmulti(dev, 0);
+ ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
+
+ ehea_free_interrupts(dev);
+
+ port->state = EHEA_PORT_DOWN;
+
+ ehea_update_bcmc_registrations();
+
+ ret = ehea_clean_all_portres(port);
+ if (ret)
+ netdev_info(dev, "Failed freeing resources. ret=%i\n", ret);
+
+ ehea_update_firmware_handles();
+
+ return ret;
+}
+
+static int ehea_stop(struct net_device *dev)
+{
+ int ret;
+ struct ehea_port *port = netdev_priv(dev);
+
+ netif_info(port, ifdown, dev, "disabling port\n");
+
+ set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
+ cancel_work_sync(&port->reset_task);
+ cancel_delayed_work_sync(&port->stats_work);
+ mutex_lock(&port->port_lock);
+ netif_tx_stop_all_queues(dev);
+ port_napi_disable(port);
+ ret = ehea_down(dev);
+ mutex_unlock(&port->port_lock);
+ clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
+ 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; i++) {
+ struct ehea_port_res *pr = &port->port_res[i];
+ int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
+ int ret;
+
+ ret = wait_event_timeout(port->swqe_avail_wq,
+ atomic_read(&pr->swqe_avail) >= swqe_max,
+ msecs_to_jiffies(100));
+
+ if (!ret) {
+ pr_err("WARNING: sq not flushed completely\n");
+ break;
+ }
+ }
+}
+
+static 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 = (void *)get_zeroed_page(GFP_KERNEL);
+ if (!cb0) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ for (i = 0; i < (port->num_def_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) {
+ pr_err("query_ehea_qp failed (1)\n");
+ 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) {
+ pr_err("modify_ehea_qp failed (1)\n");
+ 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) {
+ pr_err("query_ehea_qp failed (2)\n");
+ goto out;
+ }
+
+ /* deregister shared memory regions */
+ dret = ehea_rem_smrs(pr);
+ if (dret) {
+ pr_err("unreg shared memory region failed\n");
+ goto out;
+ }
+ }
+
+ ret = 0;
+out:
+ free_page((unsigned long)cb0);
+
+ return ret;
+}
+
+static 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);
+ }
+}
+
+static 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 = (void *)get_zeroed_page(GFP_KERNEL);
+ if (!cb0) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ for (i = 0; i < (port->num_def_qps); i++) {
+ struct ehea_port_res *pr = &port->port_res[i];
+ struct ehea_qp *qp = pr->qp;
+
+ ret = ehea_gen_smrs(pr);
+ if (ret) {
+ netdev_err(dev, "creation of shared memory regions failed\n");
+ 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) {
+ netdev_err(dev, "query_ehea_qp failed (1)\n");
+ 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) {
+ netdev_err(dev, "modify_ehea_qp failed (1)\n");
+ 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) {
+ netdev_err(dev, "query_ehea_qp failed (2)\n");
+ 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:
+ free_page((unsigned long)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;
+
+ mutex_lock(&dlpar_mem_lock);
+ port->resets++;
+ mutex_lock(&port->port_lock);
+ netif_tx_disable(dev);
+
+ port_napi_disable(port);
+
+ ehea_down(dev);
+
+ ret = ehea_up(dev);
+ if (ret)
+ goto out;
+
+ ehea_set_multicast_list(dev);
+
+ netif_info(port, timer, dev, "reset successful\n");
+
+ port_napi_enable(port);
+
+ netif_tx_wake_all_queues(dev);
+out:
+ mutex_unlock(&port->port_lock);
+ mutex_unlock(&dlpar_mem_lock);
+}
+
+static void ehea_rereg_mrs(void)
+{
+ int ret, i;
+ struct ehea_adapter *adapter;
+
+ pr_info("LPAR memory changed - re-initializing driver\n");
+
+ 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_tx_disable(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);
+ }
+ reset_sq_restart_flag(port);
+ }
+
+ /* Unregister old memory region */
+ ret = ehea_rem_mr(&adapter->mr);
+ if (ret) {
+ pr_err("unregister MR failed - driver inoperable!\n");
+ 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) {
+ pr_err("register MR failed - driver inoperable!\n");
+ 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);
+ ret = ehea_restart_qps(dev);
+ if (!ret) {
+ check_sqs(port);
+ port_napi_enable(port);
+ netif_tx_wake_all_queues(dev);
+ } else {
+ netdev_err(dev, "Unable to restart QPS\n");
+ }
+ mutex_unlock(&port->port_lock);
+ }
+ }
+ }
+ }
+ pr_info("re-initializing driver complete\n");
+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))
+ ehea_schedule_port_reset(port);
+}
+
+static int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
+{
+ struct hcp_query_ehea *cb;
+ u64 hret;
+ int ret;
+
+ cb = (void *)get_zeroed_page(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:
+ free_page((unsigned long)cb);
+out:
+ return ret;
+}
+
+static 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 = (void *)get_zeroed_page(GFP_KERNEL);
+ if (!cb4) {
+ pr_err("no mem for cb4\n");
+ 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;
+
+ free_page((unsigned long)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 logical_port_release(struct device *dev)
+{
+ struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
+ of_node_put(port->ofdev.dev.of_node);
+}
+
+static struct device *ehea_register_port(struct ehea_port *port,
+ struct device_node *dn)
+{
+ int ret;
+
+ port->ofdev.dev.of_node = of_node_get(dn);
+ port->ofdev.dev.parent = &port->adapter->ofdev->dev;
+ port->ofdev.dev.bus = &ibmebus_bus_type;
+
+ dev_set_name(&port->ofdev.dev, "port%d", port_name_cnt++);
+ port->ofdev.dev.release = logical_port_release;
+
+ ret = of_device_register(&port->ofdev);
+ if (ret) {
+ pr_err("failed to register device. ret=%d\n", ret);
+ goto out;
+ }
+
+ ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
+ if (ret) {
+ pr_err("failed to register attributes, ret=%d\n", 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);
+}
+
+static const struct net_device_ops ehea_netdev_ops = {
+ .ndo_open = ehea_open,
+ .ndo_stop = ehea_stop,
+ .ndo_start_xmit = ehea_start_xmit,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = ehea_netpoll,
+#endif
+ .ndo_get_stats64 = ehea_get_stats64,
+ .ndo_set_mac_address = ehea_set_mac_addr,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_rx_mode = ehea_set_multicast_list,
+ .ndo_change_mtu = ehea_change_mtu,
+ .ndo_vlan_rx_add_vid = ehea_vlan_rx_add_vid,
+ .ndo_vlan_rx_kill_vid = ehea_vlan_rx_kill_vid,
+ .ndo_tx_timeout = ehea_tx_watchdog,
+};
+
+static 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_mq(sizeof(struct ehea_port), EHEA_MAX_PORT_RES);
+
+ if (!dev) {
+ 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;
+
+ netif_set_real_num_rx_queues(dev, port->num_def_qps);
+ netif_set_real_num_tx_queues(dev, port->num_def_qps);
+
+ 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->netdev_ops = &ehea_netdev_ops;
+ ehea_set_ethtool_ops(dev);
+
+ dev->hw_features = NETIF_F_SG | NETIF_F_TSO |
+ NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_CTAG_TX;
+ dev->features = NETIF_F_SG | NETIF_F_TSO |
+ NETIF_F_HIGHDMA | NETIF_F_IP_CSUM |
+ NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
+ NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_RXCSUM;
+ dev->vlan_features = NETIF_F_SG | NETIF_F_TSO | NETIF_F_HIGHDMA |
+ NETIF_F_IP_CSUM;
+ dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
+
+ INIT_WORK(&port->reset_task, ehea_reset_port);
+ INIT_DELAYED_WORK(&port->stats_work, ehea_update_stats);
+
+ init_waitqueue_head(&port->swqe_avail_wq);
+ init_waitqueue_head(&port->restart_wq);
+
+ memset(&port->stats, 0, sizeof(struct net_device_stats));
+ ret = register_netdev(dev);
+ if (ret) {
+ pr_err("register_netdev failed. ret=%d\n", ret);
+ goto out_unreg_port;
+ }
+
+ ret = ehea_get_jumboframe_status(port, &jumbo);
+ if (ret)
+ netdev_err(dev, "failed determining jumbo frame status\n");
+
+ netdev_info(dev, "Jumbo frames are %sabled\n",
+ 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:
+ pr_err("setting up logical port with id=%d failed, ret=%d\n",
+ logical_port_id, ret);
+ return NULL;
+}
+
+static void ehea_shutdown_single_port(struct ehea_port *port)
+{
+ struct ehea_adapter *adapter = port->adapter;
+
+ cancel_work_sync(&port->reset_task);
+ cancel_delayed_work_sync(&port->stats_work);
+ 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->dev.of_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) {
+ pr_err("bad device node: eth_dn name=%s\n",
+ eth_dn->full_name);
+ continue;
+ }
+
+ if (ehea_add_adapter_mr(adapter)) {
+ pr_err("creating MR failed\n");
+ 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])
+ netdev_info(adapter->port[i]->netdev,
+ "logical port id #%d\n", *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->dev.of_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_get_drvdata(dev);
+ 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) {
+ netdev_info(port->netdev, "adding port with logical port id=%d failed: port already configured\n",
+ logical_port_id);
+ return -EINVAL;
+ }
+
+ eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
+
+ if (!eth_dn) {
+ pr_info("no logical port with id %d found\n", logical_port_id);
+ return -EINVAL;
+ }
+
+ if (ehea_add_adapter_mr(adapter)) {
+ pr_err("creating MR failed\n");
+ 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;
+ }
+
+ netdev_info(port->netdev, "added: (logical port id=%d)\n",
+ 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_get_drvdata(dev);
+ 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) {
+ netdev_info(port->netdev, "removed: (logical port id=%d)\n",
+ 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 {
+ pr_err("removing port with logical port id=%d failed. port not configured.\n",
+ 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);
+
+static int ehea_create_device_sysfs(struct platform_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;
+}
+
+static void ehea_remove_device_sysfs(struct platform_device *dev)
+{
+ device_remove_file(&dev->dev, &dev_attr_probe_port);
+ device_remove_file(&dev->dev, &dev_attr_remove_port);
+}
+
+static int ehea_reboot_notifier(struct notifier_block *nb,
+ unsigned long action, void *unused)
+{
+ if (action == SYS_RESTART) {
+ pr_info("Reboot: freeing all eHEA resources\n");
+ ibmebus_unregister_driver(&ehea_driver);
+ }
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block ehea_reboot_nb = {
+ .notifier_call = ehea_reboot_notifier,
+};
+
+static int ehea_mem_notifier(struct notifier_block *nb,
+ unsigned long action, void *data)
+{
+ int ret = NOTIFY_BAD;
+ struct memory_notify *arg = data;
+
+ mutex_lock(&dlpar_mem_lock);
+
+ switch (action) {
+ case MEM_CANCEL_OFFLINE:
+ pr_info("memory offlining canceled");
+ /* Fall through: re-add canceled memory block */
+
+ case MEM_ONLINE:
+ pr_info("memory is going online");
+ set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
+ if (ehea_add_sect_bmap(arg->start_pfn, arg->nr_pages))
+ goto out_unlock;
+ ehea_rereg_mrs();
+ break;
+
+ case MEM_GOING_OFFLINE:
+ pr_info("memory is going offline");
+ set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
+ if (ehea_rem_sect_bmap(arg->start_pfn, arg->nr_pages))
+ goto out_unlock;
+ ehea_rereg_mrs();
+ break;
+
+ default:
+ break;
+ }
+
+ ehea_update_firmware_handles();
+ ret = NOTIFY_OK;
+
+out_unlock:
+ mutex_unlock(&dlpar_mem_lock);
+ return ret;
+}
+
+static struct notifier_block ehea_mem_nb = {
+ .notifier_call = ehea_mem_notifier,
+};
+
+static 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 atomic_t ehea_memory_hooks_registered;
+
+/* Register memory hooks on probe of first adapter */
+static int ehea_register_memory_hooks(void)
+{
+ int ret = 0;
+
+ if (atomic_inc_return(&ehea_memory_hooks_registered) > 1)
+ return 0;
+
+ ret = ehea_create_busmap();
+ if (ret) {
+ pr_info("ehea_create_busmap failed\n");
+ goto out;
+ }
+
+ ret = register_reboot_notifier(&ehea_reboot_nb);
+ if (ret) {
+ pr_info("register_reboot_notifier failed\n");
+ goto out;
+ }
+
+ ret = register_memory_notifier(&ehea_mem_nb);
+ if (ret) {
+ pr_info("register_memory_notifier failed\n");
+ goto out2;
+ }
+
+ ret = crash_shutdown_register(ehea_crash_handler);
+ if (ret) {
+ pr_info("crash_shutdown_register failed\n");
+ goto out3;
+ }
+
+ return 0;
+
+out3:
+ unregister_memory_notifier(&ehea_mem_nb);
+out2:
+ unregister_reboot_notifier(&ehea_reboot_nb);
+out:
+ atomic_dec(&ehea_memory_hooks_registered);
+ return ret;
+}
+
+static void ehea_unregister_memory_hooks(void)
+{
+ /* Only remove the hooks if we've registered them */
+ if (atomic_read(&ehea_memory_hooks_registered) == 0)
+ return;
+
+ unregister_reboot_notifier(&ehea_reboot_nb);
+ if (crash_shutdown_unregister(ehea_crash_handler))
+ pr_info("failed unregistering crash handler\n");
+ unregister_memory_notifier(&ehea_mem_nb);
+}
+
+static int ehea_probe_adapter(struct platform_device *dev)
+{
+ struct ehea_adapter *adapter;
+ const u64 *adapter_handle;
+ int ret;
+ int i;
+
+ ret = ehea_register_memory_hooks();
+ if (ret)
+ return ret;
+
+ if (!dev || !dev->dev.of_node) {
+ pr_err("Invalid ibmebus device probed\n");
+ return -EINVAL;
+ }
+
+ adapter = devm_kzalloc(&dev->dev, 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->dev.of_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->dev.of_node->full_name);
+ ret = -ENODEV;
+ goto out_free_ad;
+ }
+
+ adapter->pd = EHEA_PD_ID;
+
+ platform_set_drvdata(dev, 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 = ehea_create_device_sysfs(dev);
+ if (ret)
+ goto out_kill_eq;
+
+ ret = ehea_setup_ports(adapter);
+ if (ret) {
+ dev_err(&dev->dev, "setup_ports failed\n");
+ goto out_rem_dev_sysfs;
+ }
+
+ ret = ibmebus_request_irq(adapter->neq->attr.ist1,
+ ehea_interrupt_neq, 0,
+ "ehea_neq", adapter);
+ if (ret) {
+ dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
+ goto out_shutdown_ports;
+ }
+
+ /* Handle any events that might be pending. */
+ tasklet_hi_schedule(&adapter->neq_tasklet);
+
+ ret = 0;
+ goto out;
+
+out_shutdown_ports:
+ for (i = 0; i < EHEA_MAX_PORTS; i++)
+ if (adapter->port[i]) {
+ ehea_shutdown_single_port(adapter->port[i]);
+ adapter->port[i] = NULL;
+ }
+
+out_rem_dev_sysfs:
+ ehea_remove_device_sysfs(dev);
+
+out_kill_eq:
+ ehea_destroy_eq(adapter->neq);
+
+out_free_ad:
+ list_del(&adapter->list);
+
+out:
+ ehea_update_firmware_handles();
+
+ return ret;
+}
+
+static int ehea_remove(struct platform_device *dev)
+{
+ struct ehea_adapter *adapter = platform_get_drvdata(dev);
+ 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);
+
+ 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);
+
+ ehea_update_firmware_handles();
+
+ return 0;
+}
+
+static int check_module_parm(void)
+{
+ int ret = 0;
+
+ if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
+ (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
+ pr_info("Bad parameter: rq1_entries\n");
+ ret = -EINVAL;
+ }
+ if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
+ (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
+ pr_info("Bad parameter: rq2_entries\n");
+ ret = -EINVAL;
+ }
+ if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
+ (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
+ pr_info("Bad parameter: rq3_entries\n");
+ ret = -EINVAL;
+ }
+ if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
+ (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
+ pr_info("Bad parameter: sq_entries\n");
+ 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);
+
+static int __init ehea_module_init(void)
+{
+ int ret;
+
+ pr_info("IBM eHEA ethernet device driver (Release %s)\n", DRV_VERSION);
+
+ memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
+ memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
+
+ mutex_init(&ehea_fw_handles.lock);
+ spin_lock_init(&ehea_bcmc_regs.lock);
+
+ ret = check_module_parm();
+ if (ret)
+ goto out;
+
+ ret = ibmebus_register_driver(&ehea_driver);
+ if (ret) {
+ pr_err("failed registering eHEA device driver on ebus\n");
+ goto out;
+ }
+
+ ret = driver_create_file(&ehea_driver.driver,
+ &driver_attr_capabilities);
+ if (ret) {
+ pr_err("failed to register capabilities attribute, ret=%d\n",
+ ret);
+ goto out2;
+ }
+
+ return ret;
+
+out2:
+ ibmebus_unregister_driver(&ehea_driver);
+out:
+ return ret;
+}
+
+static void __exit ehea_module_exit(void)
+{
+ driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
+ ibmebus_unregister_driver(&ehea_driver);
+ ehea_unregister_memory_hooks();
+ kfree(ehea_fw_handles.arr);
+ kfree(ehea_bcmc_regs.arr);
+ ehea_destroy_busmap();
+}
+
+module_init(ehea_module_init);
+module_exit(ehea_module_exit);
Code Review / kvmfornfv.git / blobdiff