diff options
Diffstat (limited to 'drivers/net/ehea/ehea_main.c')
| -rw-r--r-- | drivers/net/ehea/ehea_main.c | 2650 |
1 files changed, 0 insertions, 2650 deletions
diff --git a/drivers/net/ehea/ehea_main.c b/drivers/net/ehea/ehea_main.c deleted file mode 100644 index 83fa32f7239..00000000000 --- a/drivers/net/ehea/ehea_main.c +++ /dev/null @@ -1,2650 +0,0 @@ -/* - * 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 <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; - -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_PARM_DESC(msg_level, "msg_level"); -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) ")"); - -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 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; - 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; - - stats->tx_packets = cb2->txucp + cb2->txmcp + cb2->txbcp; - 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 i; - - if (!nr_of_wqes) - return; - - for (i = 0; i < nr_of_wqes; i++) { - if (!skb_arr_rq1[index]) { - skb_arr_rq1[index] = netdev_alloc_skb(dev, - EHEA_L_PKT_SIZE); - if (!skb_arr_rq1[index]) { - ehea_error("%s: no mem for skb/%d wqes filled", - dev->name, i); - break; - } - } - index--; - index &= max_index_mask; - } - /* Ring doorbell */ - ehea_update_rq1a(pr->qp, i); -} - -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 ret = 0; - - fill_wqes = q_skba->os_skbs + num_wqes; - - if (!fill_wqes) - return ret; - - index = q_skba->index; - max_index_mask = q_skba->len - 1; - for (i = 0; i < fill_wqes; i++) { - struct sk_buff *skb = netdev_alloc_skb(dev, packet_size); - if (!skb) { - ehea_error("%s: no mem for skb/%d wqes filled", - dev->name, i); - q_skba->os_skbs = fill_wqes - i; - ret = -ENOMEM; - break; - } - skb_reserve(skb, NET_IP_ALIGN); - - skb_arr[index] = skb; - - 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 = (u64)skb->data; - rwqe->sg_list[0].len = packet_size; - rwqe->data_segments = 1; - - index++; - index &= max_index_mask; - } - q_skba->index = index; - - /* Ring doorbell */ - iosync(); - if (rq_nr == 2) - ehea_update_rq2a(pr->qp, i); - else - ehea_update_rq3a(pr->qp, i); - - 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 (netif_msg_rx_err(pr->port)) { - ehea_error("CQE Error for QP %d", pr->qp->init_attr.qp_nr); - ehea_dump(cqe, sizeof(*cqe), "CQE"); - } - - 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) { - ehea_error("Critical receive error. Resetting port."); - queue_work(pr->port->adapter->ehea_wq, &pr->port->reset_task); - return 1; - } - - return 0; -} - -static int ehea_poll(struct net_device *dev, int *budget) -{ - struct ehea_port *port = netdev_priv(dev); - struct ehea_port_res *pr = &port->port_res[0]; - 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, intreq, my_quota, port_reset; - - processed = processed_rq1 = processed_rq2 = processed_rq3 = 0; - last_wqe_index = 0; - my_quota = min(*budget, dev->quota); - my_quota = min(my_quota, EHEA_POLL_MAX_RWQE); - - /* rq0 is low latency RQ */ - cqe = ehea_poll_rq1(qp, &wqe_index); - while ((my_quota > 0) && cqe) { - ehea_inc_rq1(qp); - processed_rq1++; - processed++; - my_quota--; - 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; - } - memcpy(skb->data, ((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++; - } - - if (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT) - vlan_hwaccel_receive_skb(skb, port->vgrp, - cqe->vlan_tag); - else - netif_receive_skb(skb); - - } else { /* Error occured */ - pr->p_state.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); - } - - dev->quota -= processed; - *budget -= processed; - - pr->p_state.ehea_poll += 1; - 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); - - intreq = ((pr->p_state.ehea_poll & 0xF) == 0xF); - - if (!cqe || intreq) { - netif_rx_complete(dev); - ehea_reset_cq_ep(pr->recv_cq); - ehea_reset_cq_n1(pr->recv_cq); - cqe = hw_qeit_get_valid(&qp->hw_rqueue1); - if (!cqe || intreq) - return 0; - if (!netif_rx_reschedule(dev, my_quota)) - return 0; - } - return 1; -} - -void free_sent_skbs(struct ehea_cqe *cqe, struct ehea_port_res *pr) -{ - struct sk_buff *skb; - int index, max_index_mask, i; - - index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id); - max_index_mask = pr->sq_skba.len - 1; - for (i = 0; i < EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id); i++) { - skb = pr->sq_skba.arr[index]; - if (likely(skb)) { - dev_kfree_skb(skb); - pr->sq_skba.arr[index] = NULL; - } else { - ehea_error("skb=NULL, wr_id=%lX, loop=%d, index=%d", - cqe->wr_id, i, index); - } - index--; - index &= max_index_mask; - } -} - -#define MAX_SENDCOMP_QUOTA 400 -void ehea_send_irq_tasklet(unsigned long data) -{ - struct ehea_port_res *pr = (struct ehea_port_res*)data; - struct ehea_cq *send_cq = pr->send_cq; - struct ehea_cqe *cqe; - int quota = MAX_SENDCOMP_QUOTA; - int cqe_counter = 0; - int swqe_av = 0; - unsigned long flags; - - do { - cqe = ehea_poll_cq(send_cq); - if (!cqe) { - ehea_reset_cq_ep(send_cq); - ehea_reset_cq_n1(send_cq); - cqe = ehea_poll_cq(send_cq); - if (!cqe) - break; - } - 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"); - queue_work(pr->port->adapter->ehea_wq, - &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)) - free_sent_skbs(cqe, pr); - - swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id); - quota--; - } while (quota > 0); - - 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); - - if (unlikely(cqe)) - tasklet_hi_schedule(&pr->send_comp_task); -} - -static irqreturn_t ehea_send_irq_handler(int irq, void *param) -{ - struct ehea_port_res *pr = param; - tasklet_hi_schedule(&pr->send_comp_task); - return IRQ_HANDLED; -} - -static irqreturn_t ehea_recv_irq_handler(int irq, void *param) -{ - struct ehea_port_res *pr = param; - struct ehea_port *port = pr->port; - netif_rx_schedule(port->netdev); - return IRQ_HANDLED; -} - -static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param) -{ - struct ehea_port *port = param; - struct ehea_eqe *eqe; - u32 qp_token; - - eqe = ehea_poll_eq(port->qp_eq); - ehea_debug("eqe=%p", eqe); - while (eqe) { - ehea_debug("*eqe=%lx", *(u64*)eqe); - eqe = ehea_poll_eq(port->qp_eq); - qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry); - ehea_debug("next eqe=%p", eqe); - } - - return IRQ_HANDLED; -} - -static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter, - int logical_port) -{ - int i; - - for (i = 0; i < adapter->num_ports; 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; - - cb0 = kzalloc(PAGE_SIZE, GFP_ATOMIC); /* May be called via */ - if (!cb0) { /* ehea_neq_tasklet() */ - 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; - } - - /* Number of default QPs */ - port->num_def_qps = cb0->num_default_qps; - - if (!port->num_def_qps) { - ret = -EINVAL; - goto out_free; - } - - if (port->num_def_qps >= EHEA_NUM_TX_QP) - port->num_add_tx_qps = 0; - else - port->num_add_tx_qps = EHEA_NUM_TX_QP - 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. Either" - " this partition is not authorized to set " - "port speed or another partition has modified" - " port speed first."); - ret = -EPERM; - } else { - ret = -EIO; - ehea_error("Failed setting port speed"); - } - } - 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)) { - if (netif_msg_link(port)) - ehea_info("%s: Physical port up", - port->netdev->name); - } else { - if (netif_msg_link(port)) - ehea_info("%s: Physical port down", - port->netdev->name); - } - - 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; - - for (i = 0; i < port->num_def_qps; i++) { - pr = &port->port_res[i]; - snprintf(pr->int_recv_name, EHEA_IRQ_NAME_SIZE - 1 - , "%s-recv%d", dev->name, i); - ret = ibmebus_request_irq(NULL, pr->recv_eq->attr.ist1, - ehea_recv_irq_handler, - SA_INTERRUPT, pr->int_recv_name, pr); - if (ret) { - ehea_error("failed registering irq for ehea_recv_int:" - "port_res_nr:%d, ist=%X", i, - pr->recv_eq->attr.ist1); - goto out_free_seq; - } - if (netif_msg_ifup(port)) - ehea_info("irq_handle 0x%X for funct ehea_recv_int %d " - "registered", pr->recv_eq->attr.ist1, i); - } - - snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff", - dev->name); - - ret = ibmebus_request_irq(NULL, port->qp_eq->attr.ist1, - ehea_qp_aff_irq_handler, - SA_INTERRUPT, 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-send%d", dev->name, i); - ret = ibmebus_request_irq(NULL, pr->send_eq->attr.ist1, - ehea_send_irq_handler, - SA_INTERRUPT, pr->int_send_name, - pr); - if (ret) { - ehea_error("failed registering irq for ehea_send " - "port_res_nr:%d, ist=%X", i, - pr->send_eq->attr.ist1); - goto out_free_req; - } - if (netif_msg_ifup(port)) - ehea_info("irq_handle 0x%X for function ehea_send_int " - "%d registered", pr->send_eq->attr.ist1, i); - } -out: - return ret; - -out_free_req: - while (--i >= 0) { - u32 ist = port->port_res[i].send_eq->attr.ist1; - ibmebus_free_irq(NULL, ist, &port->port_res[i]); - } -out_free_qpeq: - ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port); - i = port->num_def_qps; -out_free_seq: - while (--i >= 0) { - u32 ist = port->port_res[i].recv_eq->attr.ist1; - ibmebus_free_irq(NULL, ist, &port->port_res[i]); - } - 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(NULL, pr->send_eq->attr.ist1, pr); - if (netif_msg_intr(port)) - ehea_info("free send irq for res %d with handle 0x%X", - i, pr->send_eq->attr.ist1); - } - - /* receive */ - for (i = 0; i < port->num_def_qps; i++) { - pr = &port->port_res[i]; - ibmebus_free_irq(NULL, pr->recv_eq->attr.ist1, pr); - if (netif_msg_intr(port)) - ehea_info("free recv irq for res %d with handle 0x%X", - i, pr->recv_eq->attr.ist1); - } - - /* associated events */ - ibmebus_free_irq(NULL, 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_def_qps; i++) - cb0->default_qpn_arr[i] = port->port_res[i].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; -} - -static int ehea_gen_smrs(struct ehea_port_res *pr) -{ - u64 hret; - struct ehea_adapter *adapter = pr->port->adapter; - - hret = ehea_h_register_smr(adapter->handle, adapter->mr.handle, - adapter->mr.vaddr, EHEA_MR_ACC_CTRL, - adapter->pd, &pr->send_mr); - if (hret != H_SUCCESS) - goto out; - - hret = ehea_h_register_smr(adapter->handle, adapter->mr.handle, - adapter->mr.vaddr, EHEA_MR_ACC_CTRL, - adapter->pd, &pr->recv_mr); - if (hret != H_SUCCESS) - goto out_freeres; - - return 0; - -out_freeres: - hret = ehea_h_free_resource(adapter->handle, pr->send_mr.handle); - if (hret != H_SUCCESS) - ehea_error("failed freeing SMR"); -out: - return -EIO; -} - -static int ehea_rem_smrs(struct ehea_port_res *pr) -{ - struct ehea_adapter *adapter = pr->port->adapter; - int ret = 0; - u64 hret; - - hret = ehea_h_free_resource(adapter->handle, pr->send_mr.handle); - if (hret != H_SUCCESS) { - ret = -EIO; - ehea_error("failed freeing send SMR for pr=%p", pr); - } - - hret = ehea_h_free_resource(adapter->handle, pr->recv_mr.handle); - if (hret != H_SUCCESS) { - ret = -EIO; - ehea_error("failed freeing recv SMR for pr=%p", pr); - } - - return ret; -} - -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->send_lock); - spin_lock_init(&pr->recv_lock); - spin_lock_init(&pr->xmit_lock); - spin_lock_init(&pr->netif_queue); - - pr->recv_eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0); - if (!pr->recv_eq) { - ehea_error("create_eq failed (recv_eq)"); - goto out_free; - } - - pr->send_eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0); - if (!pr->send_eq) { - ehea_error("create_eq failed (send_eq)"); - goto out_free; - } - - pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq, - pr->recv_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->send_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); - - ret = ehea_init_q_skba(&pr->sq_skba, init_attr->act_nr_send_wqes + 1); - 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; - } - tasklet_init(&pr->send_comp_task, ehea_send_irq_tasklet, - (unsigned long)pr); - atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1); - - kfree(init_attr); - 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->send_eq); - ehea_destroy_eq(pr->recv_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->send_eq); - ehea_destroy_eq(pr->recv_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 = (u8)(((u64)skb->nh.iph) - ((u64)skb->data)); - swqe->ip_end = (u8)(swqe->ip_start + skb->nh.iph->ihl * 4 - 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; - u64 tmp_addr; - - /* 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 + (skb->nh.iph->ihl * 4) + (skb->h.th->doff * 4); - - skb_data_size = skb->len - skb->data_len; - - if (skb_data_size >= headersize) { - /* copy immediate data */ - memcpy(imm_data, skb->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; - - tmp_addr = (u64)(skb->data + headersize); - sg1entry->vaddr = tmp_addr; - 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; - u64 tmp_addr; - - /* 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 */ - memcpy(imm_data, skb->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; - tmp_addr = (u64)(skb->data + SWQE2_MAX_IMM); - sg1entry->vaddr = tmp_addr; - swqe->descriptors++; - } - } else { - memcpy(imm_data, skb->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; - u64 tmp_addr; - - 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; - tmp_addr = (u64)(page_address(frag->page) - + frag->page_offset); - sg1entry->vaddr = tmp_addr; - 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; - - tmp_addr = (u64)(page_address(frag->page) - + frag->page_offset); - sgentry->vaddr = tmp_addr; - 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("reg_dereg_bcmc failed (tagged)"); - 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("reg_dereg_bcmc failed (vlan)"); - 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); - - /* Deregister old MAC in pHYP */ - ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC); - if (ret) - goto out_free; - - 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_free; - - ret = 0; -out_free: - kfree(cb0); -out: - return ret; -} - -static void ehea_promiscuous_error(u64 hret, int enable) -{ - ehea_info("Hypervisor denied %sabling promiscuous mode.%s", - enable == 1 ? "en" : "dis", - hret != H_AUTHORITY ? "" : " Another partition owning a " - "logical port on the same physical port might have altered " - "promiscuous mode first."); -} - -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); - - if (dev->flags & IFF_ALLMULTI) { - ehea_allmulti(dev, 1); - return; - } - 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: - 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)) { - /* 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 (skb->nh.iph->protocol == IPPROTO_UDP) { - if ((skb->nh.iph->frag_off & IP_MF) || - (skb->nh.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 (skb->nh.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)) { - /* IPv4 */ - write_ip_start_end(swqe, skb); - - if (skb->nh.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 (skb->nh.iph->protocol == IPPROTO_UDP) { - if ((skb->nh.iph->frag_off & IP_MF) || - (skb->nh.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 */ - memcpy(imm_data, skb->data, skb->len); - } else { - /* first copy data from the skb->data buffer ... */ - memcpy(imm_data, skb->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 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 = &port->port_res[0]; - - spin_lock(&pr->xmit_lock); - - 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_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); - - if (pr->swqe_count >= (EHEA_SIG_IV_LONG - 1)) { - swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL, - EHEA_SIG_IV_LONG); - swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION; - pr->swqe_count = 0; - } else - pr->swqe_count += 1; - } - 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"); - } - - 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)) { - 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; - } - - if (grp) - memset(cb1->vlan_filter, 0, sizeof(cb1->vlan_filter)); - else - memset(cb1->vlan_filter, 0xFF, sizeof(cb1->vlan_filter)); - - 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)(1 << (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; - - if (port->vgrp) - port->vgrp->vlan_devices[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)(1 << (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; - 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 int ehea_up(struct net_device *dev) -{ - int ret, i; - struct ehea_port *port = netdev_priv(dev); - u64 mac_addr = 0; - - if (port->state == EHEA_PORT_UP) - return 0; - - 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_broadcast_reg_helper(port, H_REG_BCMC); - if (ret) { - ret = -EIO; - ehea_error("out_clean_pr"); - goto out_clean_pr; - } - mac_addr = (*(u64*)dev->dev_addr) >> 16; - - ret = ehea_reg_interrupts(dev); - if (ret) { - ehea_error("out_dereg_bc"); - goto out_dereg_bc; - } - - 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; - } - } - - ret = 0; - port->state = EHEA_PORT_UP; - goto out; - -out_free_irqs: - ehea_free_interrupts(dev); - -out_dereg_bc: - ehea_broadcast_reg_helper(port, H_DEREG_BCMC); - -out_clean_pr: - ehea_clean_all_portres(port); -out: - return ret; -} - -static int ehea_open(struct net_device *dev) -{ - int ret; - struct ehea_port *port = netdev_priv(dev); - - down(&port->port_lock); - - if (netif_msg_ifup(port)) - ehea_info("enabling port %s", dev->name); - - ret = ehea_up(dev); - if (!ret) - netif_start_queue(dev); - - up(&port->port_lock); - - return ret; -} - -static int ehea_down(struct net_device *dev) -{ - int ret, i; - struct ehea_port *port = netdev_priv(dev); - - if (port->state == EHEA_PORT_DOWN) - return 0; - - ehea_drop_multicast_list(dev); - ehea_free_interrupts(dev); - - for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) - tasklet_kill(&port->port_res[i].send_comp_task); - - ehea_broadcast_reg_helper(port, H_DEREG_BCMC); - ret = ehea_clean_all_portres(port); - port->state = EHEA_PORT_DOWN; - 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_workqueue(port->adapter->ehea_wq); - down(&port->port_lock); - netif_stop_queue(dev); - ret = ehea_down(dev); - up(&port->port_lock); - 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++; - down(&port->port_lock); - netif_stop_queue(dev); - netif_poll_disable(dev); - - ret = ehea_down(dev); - if (ret) - ehea_error("ehea_down failed. not all resources are freed"); - - ret = ehea_up(dev); - if (ret) { - ehea_error("Reset device %s failed: ret=%d", dev->name, ret); - goto out; - } - - if (netif_msg_timer(port)) - ehea_info("Device %s resetted successfully", dev->name); - - netif_poll_enable(dev); - netif_wake_queue(dev); -out: - up(&port->port_lock); - return; -} - -static void ehea_tx_watchdog(struct net_device *dev) -{ - struct ehea_port *port = netdev_priv(dev); - - if (netif_carrier_ok(dev)) - queue_work(port->adapter->ehea_wq, &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->num_ports = cb->num_ports; - adapter->max_mc_mac = cb->max_mc_mac - 1; - ret = 0; - -out_herr: - kfree(cb); -out: - return ret; -} - -static int ehea_setup_single_port(struct ehea_port *port, - struct device_node *dn) -{ - int ret; - u64 hret; - struct net_device *dev = port->netdev; - struct ehea_adapter *adapter = port->adapter; - struct hcp_ehea_port_cb4 *cb4; - u32 *dn_log_port_id; - - sema_init(&port->port_lock, 1); - port->state = EHEA_PORT_DOWN; - port->sig_comp_iv = sq_entries / 10; - - if (!dn) { - ehea_error("bad device node: dn=%p", dn); - ret = -EINVAL; - goto out; - } - - port->of_dev_node = dn; - - /* Determine logical port id */ - dn_log_port_id = (u32*)get_property(dn, "ibm,hea-port-no", NULL); - - if (!dn_log_port_id) { - ehea_error("bad device node: dn_log_port_id=%p", - dn_log_port_id); - ret = -EINVAL; - goto out; - } - port->logical_port_id = *dn_log_port_id; - - port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL); - if (!port->mc_list) { - ret = -ENOMEM; - goto out; - } - - INIT_LIST_HEAD(&port->mc_list->list); - - ehea_set_portspeed(port, EHEA_SPEED_AUTONEG); - - ret = ehea_sense_port_attr(port); - if (ret) - goto out; - - /* Enable Jumbo frames */ - cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL); - if (!cb4) { - ehea_error("no mem for cb4"); - } else { - cb4->jumbo_frame = 1; - hret = ehea_h_modify_ehea_port(adapter->handle, - port->logical_port_id, - H_PORT_CB4, H_PORT_CB4_JUMBO, - cb4); - if (hret != H_SUCCESS) { - ehea_info("Jumbo frames not activated"); - } - kfree(cb4); - } - - /* initialize net_device structure */ - SET_MODULE_OWNER(dev); - - memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN); - - dev->open = ehea_open; - dev->poll = ehea_poll; - dev->weight = 64; - 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_HW_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_free; - } - - port->netdev = dev; - ret = 0; - goto out; - -out_free: - kfree(port->mc_list); -out: - return ret; -} - -static int ehea_setup_ports(struct ehea_adapter *adapter) -{ - int ret; - int port_setup_ok = 0; - struct ehea_port *port; - struct device_node *dn = NULL; - struct net_device *dev; - int i; - - /* get port properties for all ports */ - for (i = 0; i < adapter->num_ports; i++) { - - if (adapter->port[i]) - continue; /* port already up and running */ - - /* allocate memory for the port structures */ - dev = alloc_etherdev(sizeof(struct ehea_port)); - - if (!dev) { - ehea_error("no mem for net_device"); - break; - } - - port = netdev_priv(dev); - port->adapter = adapter; - port->netdev = dev; - adapter->port[i] = port; - port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT); - - dn = of_find_node_by_name(dn, "ethernet"); - ret = ehea_setup_single_port(port, dn); - if (ret) { - /* Free mem for this port struct. The others will be - processed on rollback */ - free_netdev(dev); - adapter->port[i] = NULL; - ehea_error("eHEA port %d setup failed, ret=%d", i, ret); - } - } - - of_node_put(dn); - - /* Check for succesfully set up ports */ - for (i = 0; i < adapter->num_ports; i++) - if (adapter->port[i]) - port_setup_ok++; - - if (port_setup_ok) - ret = 0; /* At least some ports are setup correctly */ - else - ret = -EINVAL; - - return ret; -} - -static int __devinit ehea_probe(struct ibmebus_dev *dev, - const struct of_device_id *id) -{ - struct ehea_adapter *adapter; - u64 *adapter_handle; - int ret; - - adapter = kzalloc(sizeof(*adapter), GFP_KERNEL); - if (!adapter) { - ret = -ENOMEM; - dev_err(&dev->ofdev.dev, "no mem for ehea_adapter\n"); - goto out; - } - - adapter_handle = (u64*)get_property(dev->ofdev.node, "ibm,hea-handle", - NULL); - if (!adapter_handle) { - dev_err(&dev->ofdev.dev, "failed getting handle for adapter" - " '%s'\n", dev->ofdev.node->full_name); - ret = -ENODEV; - goto out_free_ad; - } - - adapter->handle = *adapter_handle; - adapter->pd = EHEA_PD_ID; - - dev->ofdev.dev.driver_data = adapter; - - ret = ehea_reg_mr_adapter(adapter); - if (ret) { - dev_err(&dev->ofdev.dev, "reg_mr_adapter failed\n"); - goto out_free_ad; - } - - /* initialize adapter and ports */ - /* get adapter properties */ - ret = ehea_sense_adapter_attr(adapter); - if (ret) { - dev_err(&dev->ofdev.dev, "sense_adapter_attr failed: %d", ret); - goto out_free_res; - } - dev_info(&dev->ofdev.dev, "%d eHEA ports found\n", adapter->num_ports); - - adapter->neq = ehea_create_eq(adapter, - EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1); - if (!adapter->neq) { - dev_err(&dev->ofdev.dev, "NEQ creation failed"); - goto out_free_res; - } - - tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet, - (unsigned long)adapter); - - ret = ibmebus_request_irq(NULL, adapter->neq->attr.ist1, - ehea_interrupt_neq, SA_INTERRUPT, - "ehea_neq", adapter); - if (ret) { - dev_err(&dev->ofdev.dev, "requesting NEQ IRQ failed"); - goto out_kill_eq; - } - - adapter->ehea_wq = create_workqueue("ehea_wq"); - if (!adapter->ehea_wq) - goto out_free_irq; - - ret = ehea_setup_ports(adapter); - if (ret) { - dev_err(&dev->ofdev.dev, "setup_ports failed"); - goto out_kill_wq; - } - - ret = 0; - goto out; - -out_kill_wq: - destroy_workqueue(adapter->ehea_wq); - -out_free_irq: - ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter); - -out_kill_eq: - ehea_destroy_eq(adapter->neq); - -out_free_res: - ehea_h_free_resource(adapter->handle, adapter->mr.handle); - -out_free_ad: - kfree(adapter); -out: - return ret; -} - -static void ehea_shutdown_single_port(struct ehea_port *port) -{ - unregister_netdev(port->netdev); - kfree(port->mc_list); - free_netdev(port->netdev); -} - -static int __devexit ehea_remove(struct ibmebus_dev *dev) -{ - struct ehea_adapter *adapter = dev->ofdev.dev.driver_data; - u64 hret; - int i; - - for (i = 0; i < adapter->num_ports; i++) - if (adapter->port[i]) { - ehea_shutdown_single_port(adapter->port[i]); - adapter->port[i] = NULL; - } - destroy_workqueue(adapter->ehea_wq); - - ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter); - - ehea_destroy_eq(adapter->neq); - - hret = ehea_h_free_resource(adapter->handle, adapter->mr.handle); - if (hret) { - dev_err(&dev->ofdev.dev, "free_resource_mr failed"); - return -EIO; - } - kfree(adapter); - return 0; -} - -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 struct of_device_id ehea_device_table[] = { - { - .name = "lhea", - .compatible = "IBM,lhea", - }, - {}, -}; - -static struct ibmebus_driver ehea_driver = { - .name = "ehea", - .id_table = ehea_device_table, - .probe = ehea_probe, - .remove = ehea_remove, -}; - -int __init ehea_module_init(void) -{ - int ret; - - printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n", - DRV_VERSION); - - ret = check_module_parm(); - if (ret) - goto out; - ret = ibmebus_register_driver(&ehea_driver); - if (ret) - ehea_error("failed registering eHEA device driver on ebus"); - -out: - return ret; -} - -static void __exit ehea_module_exit(void) -{ - ibmebus_unregister_driver(&ehea_driver); -} - -module_init(ehea_module_init); -module_exit(ehea_module_exit); |