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Message-ID: <44D99EFC.3000105@de.ibm.com>
Date: Wed, 09 Aug 2006 10:38:20 +0200
From: Jan-Bernd Themann <ossthema@...ibm.com>
To: netdev <netdev@...r.kernel.org>
CC: linux-ppc <linuxppc-dev@...abs.org>,
linux-kernel <linux-kernel@...r.kernel.org>,
Marcus Eder <meder@...ibm.com>,
Christoph Raisch <raisch@...ibm.com>,
Thomas Klein <tklein@...ibm.com>
Subject: [PATCH 1/6] ehea: interface to network stack
Signed-off-by: Jan-Bernd Themann <themann@...ibm.com>
drivers/net/ehea/ehea_main.c | 2738 +++++++++++++++++++++++++++++++++++++++++++
1 file changed, 2738 insertions(+)
--- linux-2.6.18-rc4-orig/drivers/net/ehea/ehea_main.c 1969-12-31 16:00:00.000000000 -0800
+++ kernel/drivers/net/ehea/ehea_main.c 2006-08-08 23:59:39.683357016 -0700
@@ -0,0 +1,2738 @@
+/*
+ * 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@...ibm.com>
+ * Jan-Bernd Themann <themann@...ibm.com>
+ * Heiko-Joerg Schick <schickhj@...ibm.com>
+ * Thomas Klein <tklein@...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 DEB_PREFIX "main"
+
+#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 <net/ip.h>
+
+#include "ehea.h"
+#include "ehea_qmr.h"
+#include "ehea_phyp.h"
+
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Christoph Raisch <raisch@...ibm.com>");
+MODULE_DESCRIPTION("IBM eServer HEA Driver");
+MODULE_VERSION(EHEA_DRIVER_VERSION);
+
+static int __devinit ehea_probe(struct ibmebus_dev *dev,
+ const struct of_device_id *id);
+static int __devexit ehea_remove(struct ibmebus_dev *dev);
+static int ehea_sense_port_attr(struct ehea_adapter *adapter, int portnum);
+
+
+int ehea_trace_level = 5;
+
+static struct net_device_stats *ehea_get_stats(struct net_device *dev)
+{
+ int i;
+ u64 hret = H_HARDWARE;
+ u64 rx_packets = 0;
+ struct ehea_port *port = (struct ehea_port*)dev->priv;
+ struct ehea_adapter *adapter = port->adapter;
+ struct hcp_query_ehea_port_cb_2 *cb2 = NULL;
+ struct net_device_stats *stats = &port->stats;
+
+ EDEB_EN(7, "net_device=%p", dev);
+
+ cb2 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
+ if (!cb2) {
+ EDEB_ERR(4, "No memory for cb2");
+ goto get_stat_exit;
+ }
+
+ hret = ehea_h_query_ehea_port(adapter->handle,
+ port->logical_port_id,
+ H_PORT_CB2,
+ H_PORT_CB2_ALL,
+ cb2);
+
+ if (hret != H_SUCCESS) {
+ EDEB_ERR(4, "query_ehea_port failed for cb2");
+ goto get_stat_exit;
+ }
+
+ EDEB_DMP(7, (u8*)cb2,
+ sizeof(struct hcp_query_ehea_port_cb_2), "After HCALL");
+
+ 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;
+
+get_stat_exit:
+ EDEB_EX(7, "");
+ return stats;
+}
+
+static inline u32 ehea_get_send_lkey(struct ehea_port_res *pr)
+{
+ return pr->send_mr.lkey;
+}
+
+static inline u32 ehea_get_recv_lkey(struct ehea_port_res *pr)
+{
+ return pr->recv_mr.lkey;
+}
+
+#define EHEA_OD_ADDR(address, segment) (((address) & (PAGE_SIZE - 1)) \
+ | ((segment) << 12));
+
+static inline u64 get_swqe_addr(u64 tmp_addr, int addr_seg)
+{
+ u64 addr;
+ addr = tmp_addr;
+ return addr;
+}
+
+static inline u64 get_rwqe_addr(u64 tmp_addr)
+{
+ return tmp_addr;
+}
+
+
+static inline int ehea_refill_rq1(struct ehea_port_res *port_res, int arr_index,
+ int nr_of_wqes)
+{
+ int i;
+ int ret = 0;
+ struct ehea_qp *qp;
+ int skb_arr_rq1_len = port_res->skb_arr_rq1_len;
+ struct sk_buff **skb_arr_rq1 = port_res->skb_arr_rq1;
+ EDEB_EN(7, "port_res=%p, arr_index=%d, nr_of_wqes=%d, arr_rq1_len=%d",
+ port_res, arr_index, nr_of_wqes, skb_arr_rq1_len);
+
+ qp = port_res->qp;
+ if (unlikely(nr_of_wqes == 0))
+ return -EINVAL;
+ for (i = 0; i < nr_of_wqes; i++) {
+ int index = ((skb_arr_rq1_len + arr_index) - i)
+ % skb_arr_rq1_len;
+ if (!skb_arr_rq1[index]) {
+ skb_arr_rq1[index] = dev_alloc_skb(EHEA_LL_PKT_SIZE);
+
+ if (!skb_arr_rq1[index]) {
+ EDEB_ERR(4, "No mem for skb/%d wqes filled", i);
+ ret = -ENOMEM;
+ break;
+ }
+ }
+ }
+ /* Ring doorbell */
+ ehea_update_rq1a(qp, nr_of_wqes);
+ EDEB_EX(7, "");
+ return ret;
+}
+
+static int ehea_init_fill_rq1(struct ehea_port_res *port_res, int nr_rq1a)
+{
+ int i;
+ int ret = 0;
+ struct ehea_qp *qp;
+ EDEB_EN(7, "port_res=%p, nr_rq1a=%d", port_res, nr_rq1a);
+ qp = port_res->qp;
+
+ for (i = 0; i < port_res->skb_arr_rq1_len; i++) {
+ port_res->skb_arr_rq1[i] = dev_alloc_skb(EHEA_LL_PKT_SIZE);
+ if (!port_res->skb_arr_rq1[i]) {
+ EDEB_ERR(4, "dev_alloc_skb failed. Only %d skb filled.",
+ i);
+ ret = -ENOMEM;
+ break;
+ }
+ }
+ /* Ring doorbell */
+ ehea_update_rq1a(qp, nr_rq1a);
+ EDEB_EX(7, "");
+ return ret;
+}
+
+static inline int ehea_refill_rq2_def(struct ehea_port_res *pr, int nr_of_wqes)
+{
+ int i;
+ int ret = 0;
+ struct ehea_qp *qp;
+ struct ehea_rwqe *rwqe;
+ int skb_arr_rq2_len = pr->skb_arr_rq2_len;
+ struct sk_buff **skb_arr_rq2 = pr->skb_arr_rq2;
+
+ EDEB_EN(8, "pr=%p, nr_of_wqes=%d", pr, nr_of_wqes);
+ if (nr_of_wqes == 0)
+ return -EINVAL;
+ qp = pr->qp;
+ for (i = 0; i < nr_of_wqes; i++) {
+ int index = pr->skb_rq2_index++;
+ struct sk_buff *skb = dev_alloc_skb(EHEA_RQ2_PKT_SIZE
+ + NET_IP_ALIGN);
+
+ if (!skb) {
+ EDEB_ERR(4, "dev_alloc_skb nr %d failed", i);
+ ret = -ENOMEM;
+ break;
+ }
+ skb_reserve(skb, NET_IP_ALIGN);
+ pr->skb_rq2_index %= skb_arr_rq2_len;
+ skb_arr_rq2[index] = skb;
+ rwqe = ehea_get_next_rwqe(qp, 2);
+ rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_RWQE2_TYPE)
+ | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
+ rwqe->sg_list[0].l_key = ehea_get_recv_lkey(pr);
+ rwqe->sg_list[0].vaddr = get_rwqe_addr((u64)skb->data);
+ rwqe->sg_list[0].len = EHEA_RQ2_PKT_SIZE;
+ rwqe->data_segments = 1;
+ }
+
+ /* Ring doorbell */
+ iosync();
+ ehea_update_rq2a(qp, i);
+ EDEB_EX(8, "");
+ return ret;
+}
+
+
+static inline int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
+{
+ return ehea_refill_rq2_def(pr, nr_of_wqes);
+}
+
+static inline int ehea_refill_rq3_def(struct ehea_port_res *pr, int nr_of_wqes)
+{
+ int i;
+ int ret = 0;
+ struct ehea_qp *qp;
+ struct ehea_rwqe *rwqe;
+ int skb_arr_rq3_len = pr->skb_arr_rq3_len;
+ struct sk_buff **skb_arr_rq3 = pr->skb_arr_rq3;
+ EDEB_EN(8, "pr=%p, nr_of_wqes=%d", pr, nr_of_wqes);
+ if (nr_of_wqes == 0)
+ return -EINVAL;
+ qp = pr->qp;
+ for (i = 0; i < nr_of_wqes; i++) {
+ int index = pr->skb_rq3_index++;
+ struct sk_buff *skb = dev_alloc_skb(EHEA_MAX_PACKET_SIZE
+ + NET_IP_ALIGN);
+
+ if (!skb) {
+ EDEB_ERR(4, "No memory for skb. Only %d rwqe filled.",
+ i);
+ ret = -ENOMEM;
+ break;
+ }
+ skb_reserve(skb, NET_IP_ALIGN);
+
+ rwqe = ehea_get_next_rwqe(qp, 3);
+ pr->skb_rq3_index %= skb_arr_rq3_len;
+ skb_arr_rq3[index] = skb;
+ rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_RWQE3_TYPE)
+ | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
+ rwqe->sg_list[0].l_key = ehea_get_recv_lkey(pr);
+ rwqe->sg_list[0].vaddr = get_rwqe_addr((u64)skb->data);
+ rwqe->sg_list[0].len = EHEA_MAX_PACKET_SIZE;
+ rwqe->data_segments = 1;
+ }
+
+ /* Ring doorbell */
+ iosync();
+ ehea_update_rq3a(qp, i);
+ EDEB_EX(8, "");
+ return ret;
+}
+
+
+static inline int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
+{
+ return ehea_refill_rq3_def(pr, nr_of_wqes);
+}
+
+
+static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
+{
+ *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
+ EDEB(7, "RQ used=%d, status=%X", *rq_num, cqe->status);
+ 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;
+ else
+ printk("WARNING: Packet discarded. Wrong TCP/UDP chksum"
+ "and header_length != 0. cqe->status=%X", cqe->status);
+
+ return -EINVAL;
+}
+
+static inline void ehea_fill_skb_ll(struct net_device *dev,
+ struct sk_buff *skb, struct ehea_cqe *cqe)
+{
+ int length = cqe->num_bytes_transfered - 4; /*remove CRC */
+ EDEB_EN(7, "dev=%p, skb=%p, cqe=%p", dev, skb, cqe);
+ memcpy(skb->data, ((char*)cqe) + 64, length);
+ skb_put(skb, length);
+ skb->dev = dev;
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ skb->protocol = eth_type_trans(skb, dev);
+ EDEB_EX(7, "");
+}
+
+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 */
+ EDEB_EN(7, "dev=%p, skb=%p, cqe=%p", dev, skb, cqe);
+ skb_put(skb, length);
+ skb->dev = dev;
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ skb->protocol = eth_type_trans(skb, dev);
+ EDEB_EX(7, "");
+}
+
+
+#define EHEA_MAX_RWQE 1000
+
+static int ehea_poll(struct net_device *dev, int *budget)
+{
+ struct ehea_port *port = (struct ehea_port*)dev->priv;
+ struct ehea_port_res *port_res = &port->port_res[0];
+ struct ehea_cqe *cqe;
+ struct ehea_qp *qp = port_res->qp;
+ int wqe_index = 0;
+ int last_wqe_index = 0;
+ int x = 0;
+ int processed = 0;
+ int processed_RQ1 = 0;
+ int processed_RQ2 = 0;
+ int processed_RQ3 = 0;
+ int rq;
+ int intreq;
+ struct sk_buff **skb_arr_rq1 = port_res->skb_arr_rq1;
+ struct sk_buff **skb_arr_rq2 = port_res->skb_arr_rq2;
+ struct sk_buff **skb_arr_rq3 = port_res->skb_arr_rq3;
+ int skb_arr_rq1_len = port_res->skb_arr_rq1_len;
+ int my_quota = min(*budget, dev->quota);
+
+ EDEB_EN(7, "dev=%p, port_res=%p, budget=%d, quota=%d, qp_nr=%x",
+ dev, port_res, *budget, dev->quota,
+ port_res->qp->init_attr.qp_nr);
+ my_quota = min(my_quota, EHEA_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--;
+
+ EDEB_DMP(6, (u8*)cqe, 4 * 16, "CQE");
+ last_wqe_index = wqe_index;
+ rmb();
+ if (!ehea_check_cqe(cqe, &rq)) {
+ struct sk_buff *skb;
+ if (rq == 1) { /* LL RQ1 */
+ void *pref;
+
+ x = (wqe_index + 1) % skb_arr_rq1_len;
+ pref = (void*)skb_arr_rq1[x];
+ prefetchw(pref);
+ prefetchw(pref + EHEA_CACHE_LINE);
+
+ x = (wqe_index + 1) % skb_arr_rq1_len;
+ pref = (void*)(skb_arr_rq1[x]->data);
+ prefetchw(pref);
+ prefetchw(pref + EHEA_CACHE_LINE);
+
+ skb = skb_arr_rq1[wqe_index];
+ if (unlikely(!skb)) {
+ EDEB_ERR(4, "LL SBK=NULL, wqe_index=%d",
+ wqe_index);
+ skb = dev_alloc_skb(EHEA_LL_PKT_SIZE);
+ if (!skb)
+ panic("Alloc SKB failed");
+ }
+ skb_arr_rq1[wqe_index] = NULL;
+ ehea_fill_skb_ll(dev, skb, cqe);
+ } else if (rq == 2) { /* RQ2 */
+ void *pref;
+ int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX,
+ cqe->wr_id);
+ x = (skb_index + 1) % port_res->skb_arr_rq2_len;
+ pref = (void*)skb_arr_rq2[x];
+ prefetchw(pref);
+ prefetchw(pref + EHEA_CACHE_LINE);
+
+ x = (skb_index + 1) % port_res->skb_arr_rq2_len;
+ pref = (void*)(skb_arr_rq2[x]->data);
+
+ prefetch(pref);
+ prefetch(pref + EHEA_CACHE_LINE);
+ prefetch(pref + EHEA_CACHE_LINE * 2);
+ prefetch(pref + EHEA_CACHE_LINE * 3);
+ skb = skb_arr_rq2[skb_index];
+
+ if (unlikely(!skb)) {
+ EDEB_ERR(4, "rq2: SKB=NULL, index=%d",
+ skb_index);
+ break;
+ }
+ skb_arr_rq2[skb_index] = NULL;
+ ehea_fill_skb(dev, skb, cqe);
+ processed_RQ2++;
+ } else {
+ void *pref;
+ int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX,
+ cqe->wr_id);
+ x = (skb_index + 1) % port_res->skb_arr_rq3_len;
+ pref = (void*)skb_arr_rq3[x];
+ prefetchw(pref);
+ prefetchw(pref + EHEA_CACHE_LINE);
+
+ x = (skb_index + 1) % port_res->skb_arr_rq3_len;
+ pref = (void*)(skb_arr_rq3[x]->data);
+ prefetch(pref);
+ prefetch(pref + EHEA_CACHE_LINE);
+ prefetch(pref + EHEA_CACHE_LINE * 2);
+ prefetch(pref + EHEA_CACHE_LINE * 3);
+
+ skb = skb_arr_rq3[skb_index];
+ if (unlikely(!skb)) {
+ EDEB_ERR(4, "rq3: SKB=NULL, index=%d",
+ skb_index);
+ break;
+ }
+ skb_arr_rq3[skb_index] = NULL;
+ ehea_fill_skb(dev, skb, cqe);
+ processed_RQ3++;
+ }
+
+ EDEB(6, "About to pass SKB: dev=%p\n"
+ "skb=%p skb->data=%p skb->len=%d"
+ " skb->data_len=0x%x nr_frags=%d",
+ dev,
+ skb,
+ skb->data,
+ skb->len,
+ skb->data_len, skb_shinfo(skb)->nr_frags);
+ if (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT) {
+ EDEB(7, "VLAN TAG extracted: %4x, vgrp=%p",
+ cqe->vlan_tag, port->vgrp);
+ EDEB(7, "vlan_devices[vlan_tag]=%p",
+ port->vgrp->vlan_devices[cqe->vlan_tag]);
+ vlan_hwaccel_receive_skb(skb, port->vgrp,
+ cqe->vlan_tag);
+ } else {
+ EDEB(7, "netif_receive_skb");
+ netif_receive_skb(skb);
+ }
+ EDEB(7, "SKB passed (netif_receive(skb) called)");
+
+ } else {
+ struct sk_buff *skb;
+
+ EDEB_ERR(4, "cqe->status indicating error: CQE:");
+ EDEB_DMP(4, (u8*)cqe, 4 * 16, "");
+ if (rq == 2) {
+ processed_RQ2++;
+ skb = skb_arr_rq2[
+ EHEA_BMASK_GET(EHEA_WR_ID_INDEX,
+ cqe->wr_id)];
+ skb_arr_rq2[EHEA_BMASK_GET(EHEA_WR_ID_INDEX,
+ cqe->wr_id)] = NULL;
+ dev_kfree_skb(skb);
+ }
+ if (rq == 3) {
+ processed_RQ3++;
+ skb = skb_arr_rq3[
+ EHEA_BMASK_GET(EHEA_WR_ID_INDEX,
+ cqe->wr_id)];
+ skb_arr_rq3[EHEA_BMASK_GET(EHEA_WR_ID_INDEX,
+ cqe->wr_id)] = NULL;
+ dev_kfree_skb(skb);
+ }
+ }
+ cqe = ehea_poll_rq1(qp, &wqe_index);
+ }
+
+ dev->quota -= processed;
+ *budget -= processed;
+
+ port_res->p_state.ehea_poll += 1;
+
+ port_res->rx_packets += processed;
+
+ ehea_refill_rq1(port_res, last_wqe_index, processed_RQ1);
+ ehea_refill_rq2(port_res, processed_RQ2);
+ ehea_refill_rq3(port_res, processed_RQ3);
+
+ intreq = ((port_res->p_state.ehea_poll & 0xF) == 0xF);
+
+ EDEB_EX(7, "processed=%d, *budget=%d, dev->quota=%d",
+ processed, *budget, dev->quota);
+
+ if (!cqe || intreq) {
+ netif_rx_complete(dev);
+ ehea_reset_cq_ep(port_res->recv_cq);
+ ehea_reset_cq_n1(port_res->recv_cq);
+ cqe = ipz_qeit_get_valid(&qp->ipz_rqueue1);
+ EDEB(7, "CQE=%p, break ehea_poll while loop", cqe);
+ if (!cqe || intreq)
+ return 0;
+ if (!netif_rx_reschedule(dev, my_quota))
+ return 0;
+ }
+ return 1;
+}
+
+#define MAX_SENDCOMP_QUOTA 400
+void ehea_send_irq_tasklet(unsigned long data)
+{
+ int quota = MAX_SENDCOMP_QUOTA;
+ int skb_index;
+ int cqe_counter = 0;
+ int swqe_av = 0;
+ unsigned long flags;
+ struct sk_buff *skb;
+ struct ehea_cqe *cqe;
+ struct ehea_port_res *port_res = (struct ehea_port_res*)data;
+ struct ehea_cq *send_cq = port_res->send_cq;
+ struct net_device *dev = port_res->port->netdev;
+
+ EDEB_EN(7, "port_res=%p", port_res);
+
+ do {
+ cqe = ehea_poll_cq(send_cq);
+ if (!cqe) {
+ EDEB(7, "No further cqe found");
+ ehea_reset_cq_ep(send_cq);
+ ehea_reset_cq_n1(send_cq);
+ cqe = ehea_poll_cq(send_cq);
+ if (!cqe) {
+ EDEB(7, "No cqe found after having"
+ " reset N1/EP\n");
+ break;
+ }
+ }
+ cqe_counter++;
+ EDEB(7, "CQE found on Send-CQ:");
+ EDEB_DMP(7, (u8*)cqe, 4 * 16, "");
+ rmb();
+ if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
+ == EHEA_SWQE2_TYPE)) { /* is swqe format 2 */
+ int i;
+ int index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX,
+ cqe->wr_id);
+ for (i = 0; i < EHEA_BMASK_GET(EHEA_WR_ID_REFILL,
+ cqe->wr_id); i++) {
+
+ skb_index = ((index - i
+ + port_res->skb_arr_sq_len)
+ % port_res->skb_arr_sq_len);
+ skb = port_res->skb_arr_sq[skb_index];
+ port_res->skb_arr_sq[skb_index] = NULL;
+
+ if (unlikely(!skb)) {
+ EDEB_ERR(4, "s_irq_tasklet: SKB=NULL "
+ "WQ_ID=%lX, loop=%d, index=%d",
+ cqe->wr_id, i, skb_index);
+ break;
+ }
+ dev_kfree_skb(skb);
+ }
+ }
+ 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, &port_res->swqe_avail);
+ EDEB(7, "port_res->swqe_avail=%d",
+ atomic_read(&port_res->swqe_avail));
+
+ if (unlikely(netif_queue_stopped(dev))) {
+ spin_lock_irqsave(&port_res->netif_queue, flags);
+ if (unlikely((atomic_read(&port_res->swqe_avail)
+ >= EHEA_SWQE_REFILL_TH))) {
+ EDEB(7, "port %d swqes_avail >=10 (%d),"
+ "netif_wake_queue called",
+ port_res->port->logical_port_id,
+ atomic_read(&port_res->swqe_avail));
+ netif_wake_queue(port_res->port->netdev);
+ }
+ spin_unlock_irqrestore(&port_res->netif_queue, flags);
+ }
+
+ if (unlikely(cqe))
+ tasklet_hi_schedule(&port_res->send_comp_task);
+
+ EDEB_EX(7, "");
+}
+
+irqreturn_t ehea_send_irq_handler(int irq, void *param, struct pt_regs *regs)
+{
+ struct ehea_port_res *pr = (struct ehea_port_res*)param;
+ EDEB_EN(7, "irq=%d, param=%p, pt_regs=%p", irq, param, regs);
+ tasklet_hi_schedule(&pr->send_comp_task);
+ EDEB_EX(7, "");
+ return IRQ_HANDLED;
+}
+
+irqreturn_t ehea_recv_irq_handler(int irq, void *param, struct pt_regs * regs)
+{
+ struct ehea_port_res *pr = (struct ehea_port_res*)param;
+ struct ehea_port *port = pr->port;
+ EDEB_EN(7, "irq=%d, param=%p, pt_regs=%p", irq, param, regs);
+ netif_rx_schedule(port->netdev);
+ EDEB_EX(7, "");
+ return IRQ_HANDLED;
+}
+
+irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param, struct pt_regs * regs)
+{
+ struct ehea_port *port = (struct ehea_port*)param;
+ struct ehea_eqe *eqe;
+ u32 qp_token;
+
+ EDEB_EN(7, "irq=%d, param=%p, pt_regs=%p", irq, param, regs);
+ eqe = (struct ehea_eqe*)ehea_poll_eq(port->qp_eq);
+ EDEB(7, "eqe=%p", eqe);
+ while (eqe) {
+ EDEB(7, "*eqe=%lx", *(u64*)eqe);
+ eqe = (struct ehea_eqe*)ehea_poll_eq(port->qp_eq);
+ qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
+ EDEB(7, "next eqe=%p", eqe);
+ }
+
+ EDEB_EX(7, "");
+ 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;
+}
+
+static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
+{
+ int ret = -EINVAL;
+ u8 ec = 0;
+ u8 portnum = 0;
+ struct ehea_port *port = NULL;
+
+ EDEB_EN(7, "eqe=%lx", eqe);
+
+ ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
+
+ switch (ec) {
+ case EHEA_EC_PORTSTATE_CHG: /* port state change */
+ EDEB(7, "Port state change");
+ portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
+ port = ehea_get_port(adapter, portnum);
+
+ if (!port) {
+ EDEB_ERR(4, "Unknown portnum %x", portnum);
+ break;
+ }
+
+ if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
+ if (!netif_carrier_ok(port->netdev)) {
+ ret = ehea_sense_port_attr(adapter, portnum);
+ if (ret) {
+ EDEB_ERR(4, "Failed resensing port");
+ break;
+ }
+
+ printk("%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)) {
+ printk("%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))
+ printk("%s: Physical port up", port->netdev->name);
+ else
+ printk("%s: Physical port down", port->netdev->name);
+
+ if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
+ printk("Externel switch port is primary port");
+ else
+ printk("Externel switch port is backup port");
+
+ break;
+ case EHEA_EC_ADAPTER_MALFUNC: /* adapter malfunction */
+ EDEB_ERR(4, "Adapter malfunction");
+ break;
+ case EHEA_EC_PORT_MALFUNC: /* port malfunction */
+ EDEB_ERR(4, "Port malfunction");
+ /* TODO Determine the port structure of the malfunctioning port
+ * netif_carrier_off(port->netdev);
+ * netif_stop_queue(port->netdev);
+ */
+ break;
+ default:
+ EDEB_ERR(4, "Unknown event code %x", ec);
+ break;
+ }
+
+ EDEB_EX(7, "");
+}
+
+void ehea_neq_tasklet(unsigned long data)
+{
+ struct ehea_adapter *adapter = (struct ehea_adapter*)data;
+ struct ehea_eqe *eqe;
+ u64 event_mask;
+
+ EDEB_EN(7, "");
+ eqe = (struct ehea_eqe*)ehea_poll_eq(adapter->neq);
+ EDEB(7, "eqe=%p", eqe);
+
+ while (eqe) {
+ EDEB(7, "*eqe=%lx", eqe->entry);
+ ehea_parse_eqe(adapter, eqe->entry);
+ eqe = (struct ehea_eqe*)ehea_poll_eq(adapter->neq);
+ EDEB(7, "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->ipz_eq_handle, event_mask);
+ EDEB_EX(7, "");
+}
+
+irqreturn_t ehea_interrupt_neq(int irq, void *param, struct pt_regs *regs)
+{
+ struct ehea_adapter *adapter = (struct ehea_adapter*)param;
+ EDEB_EN(7, "dev_id=%p", adapter);
+ tasklet_hi_schedule(&adapter->neq_tasklet);
+ EDEB_EX(7, "");
+ return IRQ_HANDLED;
+}
+
+
+
+static void ehea_fill_port_res(struct ehea_port_res *pr)
+{
+ struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
+
+ /* RQ 1 */
+ ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
+ - init_attr->act_nr_rwqes_rq2
+ - init_attr->act_nr_rwqes_rq3 - 1);
+
+ /* RQ 2 */
+ ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2);
+
+ /* RQ 3 */
+ ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3);
+}
+
+static int ehea_reg_interrupts(struct net_device *dev)
+{
+ int ret = -EINVAL;
+ int i;
+ struct ehea_port *port = (struct ehea_port*)dev->priv;
+ struct ehea_port_res *pr = &port->port_res[0];
+
+ EDEB_EN(7, "");
+ 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) {
+ EDEB_ERR(4, "Failed registering irq for ehea_recv_int:"
+ "port_res_nr:%d, ist=%X", i,
+ pr->recv_eq->attr.ist1);
+ goto failure;
+ }
+ EDEB(7, "irq_handle 0x%X for function 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) {
+ EDEB_ERR(4, "Failed registering irq for qp_aff_irq_handler:"
+ " ist=%X", port->qp_eq->attr.ist1);
+ goto failure;
+ }
+ EDEB(7, "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_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) {
+ EDEB_ERR(4, "Registering irq for ehea_send failed"
+ " port_res_nr:%d, ist=%X", i,
+ pr->send_eq->attr.ist1);
+ goto failure;
+ }
+ EDEB(7, "irq_handle 0x%X for function ehea_send_int %d"
+ " registered", pr->send_eq->attr.ist1, i);
+ }
+failure:
+ EDEB_EX(7, "ret=%d", ret);
+ return ret;
+}
+
+static void ehea_free_interrupts(struct net_device *dev)
+{
+ struct ehea_port *port = (struct ehea_port*)dev->priv;
+ int i;
+
+ EDEB_EN(7, "");
+ /* send */
+ for (i = 0; i < port->num_def_qps + port->num_tx_qps; i++) {
+ ibmebus_free_irq(NULL, port->port_res[i].send_eq->attr.ist1,
+ &port->port_res[i]);
+ EDEB(7, "free send interrupt for res %d with handle 0x%X",
+ i, port->port_res[i].send_eq->attr.ist1);
+ }
+
+ /* receive */
+ for (i = 0; i < port->num_def_qps; i++) {
+ ibmebus_free_irq(NULL, port->port_res[i].recv_eq->attr.ist1,
+ &port->port_res[i]);
+ EDEB(7, "free recv intterupt for res %d with handle 0x%X",
+ i, port->port_res[i].recv_eq->attr.ist1);
+ }
+ /* associated events */
+ ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
+ EDEB(7, "associated event interrupt for handle 0x%X freed",
+ port->qp_eq->attr.ist1);
+ EDEB_EX(7, "");
+}
+
+static int ehea_configure_port(struct ehea_port *port)
+{
+ int ret = -EINVAL;
+ u64 hret = H_HARDWARE;
+ struct hcp_query_ehea_port_cb_0 *ehea_port_cb_0 = NULL;
+ u64 mask = 0;
+ int i;
+
+ EDEB_EN(7, "");
+
+ ehea_port_cb_0 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
+
+ if (!ehea_port_cb_0) {
+ EDEB_ERR(4, "No memory for ehea_port control block");
+ ret = -ENOMEM;
+ goto kzalloc_failed;
+ }
+
+ ehea_port_cb_0->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++) {
+ ehea_port_cb_0->default_qpn_array[i] =
+ port->port_res[i].qp->init_attr.qp_nr;
+
+ EDEB(7, "default_qpn_array[%d]=%d",
+ i, port->port_res[i].qp->init_attr.qp_nr);
+ }
+
+ EDEB(7, "ehea_port_cb_0");
+ EDEB_DMP(7, (u8*)ehea_port_cb_0, sizeof(*ehea_port_cb_0), "");
+
+ 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,
+ (void*)ehea_port_cb_0);
+
+ if (hret != H_SUCCESS) {
+ goto modify_ehea_port_failed;
+ }
+
+ ret = 0;
+
+modify_ehea_port_failed:
+ kfree(ehea_port_cb_0);
+
+kzalloc_failed:
+ EDEB_EX(7, "ret=%d", ret);
+ return ret;
+}
+
+
+static int ehea_gen_smrs(struct ehea_port_res *pr)
+{
+ u64 hret = H_HARDWARE;
+ struct ehea_adapter *adapter = pr->port->adapter;
+ EDEB_EN(7, "ehea_port_res=%p", pr);
+ hret = hipz_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 ehea_gen_smrs_err1;
+
+ hret = hipz_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 ehea_gen_smrs_err2;
+ EDEB_EX(7, "");
+ return 0;
+
+ehea_gen_smrs_err2:
+ hret = ehea_h_free_resource_mr(adapter->handle, pr->send_mr.handle);
+ if (hret != H_SUCCESS)
+ EDEB_ERR(4, "Could not free SMR");
+ehea_gen_smrs_err1:
+ return -EINVAL;
+}
+
+static void ehea_rem_smrs(struct ehea_port_res *pr)
+{
+ u64 hret = H_HARDWARE;
+ struct ehea_adapter *adapter = pr->port->adapter;
+ EDEB_EN(7, "ehea_port_res=%p", pr);
+ hret = ehea_h_free_resource_mr(adapter->handle, pr->send_mr.handle);
+ if (hret != H_SUCCESS)
+ EDEB_ERR(4, "Could not free send SMR for pr=%p", pr);
+
+ hret = ehea_h_free_resource_mr(adapter->handle, pr->recv_mr.handle);
+ if (hret != H_SUCCESS)
+ EDEB_ERR(4, "Could not free receive SMR for pr=%p", pr);
+ EDEB_EX(7, "");
+}
+
+static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
+ struct port_res_cfg *pr_cfg, int queue_token)
+{
+ int ret = -EINVAL;
+ int max_rq_entries = 0;
+ enum ehea_eq_type eq_type = EHEA_EQ;
+ struct ehea_qp_init_attr *init_attr;
+ struct ehea_adapter *adapter = port->adapter;
+
+ EDEB_EN(7, "port=%p, pr=%p", port, pr);
+
+ 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) {
+ EDEB_ERR(4, "ehea_create_eq failed (recv_eq)");
+ goto ehea_init_port_res_err1;
+ }
+ pr->send_eq = ehea_create_eq(adapter, eq_type,
+ EHEA_MAX_ENTRIES_EQ, 0);
+ if (!pr->send_eq) {
+ EDEB_ERR(4, "ehea_create_eq failed (send_eq)");
+ goto ehea_init_port_res_err2;
+ }
+
+ pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
+ pr->recv_eq->ipz_eq_handle,
+ port->logical_port_id);
+ if (!pr->recv_cq) {
+ EDEB_ERR(4, "ehea_create_cq failed (cq_recv)");
+ goto ehea_init_port_res_err3;
+ }
+
+ pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
+ pr->send_eq->ipz_eq_handle,
+ port->logical_port_id);
+ if (!pr->send_cq) {
+ EDEB_ERR(4, "ehea_create_cq failed (cq_send)");
+ goto ehea_init_port_res_err4;
+ }
+
+ init_attr = (struct ehea_qp_init_attr*)
+ kzalloc(sizeof(struct ehea_qp_init_attr), GFP_KERNEL);
+
+ if (!init_attr) {
+ EDEB_ERR(4, "no mem for init_attr struct");
+ ret = -ENOMEM;
+ goto ehea_init_port_res_err5;
+ }
+
+ 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->ipz_cq_handle;
+ init_attr->recv_cq_handle = pr->recv_cq->ipz_cq_handle;
+ init_attr->aff_eq_handle = port->qp_eq->ipz_eq_handle;
+
+ pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
+ if (!pr->qp) {
+ EDEB_ERR(4, "could not create queue pair");
+ goto ehea_init_port_res_err6;
+ }
+
+ /* SQ */
+ max_rq_entries = init_attr->act_nr_send_wqes;
+ pr->skb_arr_sq = (struct sk_buff**)vmalloc(sizeof(struct sk_buff*)
+ * (max_rq_entries + 1));
+ if (!pr->skb_arr_sq) {
+ EDEB_ERR(4, "vmalloc for skb_arr_sq failed");
+ goto ehea_init_port_res_err7;
+ }
+ memset(pr->skb_arr_sq, 0, sizeof(void*) * (max_rq_entries + 1));
+ pr->skb_sq_index = 0;
+ pr->skb_arr_sq_len = max_rq_entries + 1;
+
+ /* RQ 1 */
+ max_rq_entries = init_attr->act_nr_rwqes_rq1;
+ pr->skb_arr_rq1 = (struct sk_buff**)vmalloc(sizeof(struct sk_buff*)
+ * (max_rq_entries + 1));
+ if (!pr->skb_arr_rq1) {
+ EDEB_ERR(4, "vmalloc for skb_arr_rq1 failed");
+ goto ehea_init_port_res_err8;
+ }
+ memset(pr->skb_arr_rq1, 0, sizeof(void*) * (max_rq_entries + 1));
+ pr->skb_arr_rq1_len = max_rq_entries + 1;
+
+ /* RQ 2 */
+ max_rq_entries = init_attr->act_nr_rwqes_rq2;
+ pr->skb_arr_rq2 = (struct sk_buff**)vmalloc(sizeof(struct sk_buff*)
+ * (max_rq_entries + 1));
+ if (!pr->skb_arr_rq2) {
+ EDEB_ERR(4, "vmalloc for skb_arr_rq2 failed");
+ goto ehea_init_port_res_err9;
+ }
+ memset(pr->skb_arr_rq2, 0, sizeof(void*) * (max_rq_entries + 1));
+ pr->skb_arr_rq2_len = max_rq_entries;
+ pr->skb_rq2_index = 0;
+
+ /* RQ 3 */
+ max_rq_entries = init_attr->act_nr_rwqes_rq3;
+ pr->skb_arr_rq3 = (struct sk_buff**)vmalloc(sizeof(struct sk_buff*)
+ * (max_rq_entries + 1));
+ if (!pr->skb_arr_rq3) {
+ EDEB_ERR(4, "vmalloc for skb_arr_rq3 failed");
+ goto ehea_init_port_res_err10;
+ }
+ memset(pr->skb_arr_rq3, 0, sizeof(void*) * (max_rq_entries + 1));
+ pr->skb_arr_rq3_len = max_rq_entries;
+ pr->skb_rq3_index = 0;
+
+ if (ehea_gen_smrs(pr) != 0)
+ goto ehea_init_port_res_err11;
+ tasklet_init(&pr->send_comp_task, ehea_send_irq_tasklet,
+ (unsigned long)pr);
+ atomic_set(&pr->swqe_avail, EHEA_MAX_ENTRIES_SQ - 1);
+
+ kfree(init_attr);
+ ret = 0;
+ goto done;
+
+ehea_init_port_res_err11:
+ vfree(pr->skb_arr_rq3);
+ehea_init_port_res_err10:
+ vfree(pr->skb_arr_rq2);
+ehea_init_port_res_err9:
+ vfree(pr->skb_arr_rq1);
+ehea_init_port_res_err8:
+ vfree(pr->skb_arr_sq);
+ehea_init_port_res_err7:
+ ehea_destroy_qp(pr->qp);
+ehea_init_port_res_err6:
+ kfree(init_attr);
+ehea_init_port_res_err5:
+ ehea_destroy_cq(pr->send_cq);
+ehea_init_port_res_err4:
+ ehea_destroy_cq(pr->recv_cq);
+ehea_init_port_res_err3:
+ ehea_destroy_eq(pr->send_eq);
+ehea_init_port_res_err2:
+ ehea_destroy_eq(pr->recv_eq);
+ehea_init_port_res_err1:
+done:
+ EDEB_EX(7, "ret=%d", ret);
+ return ret;
+}
+
+static int ehea_clean_port_res(struct ehea_port *port, struct ehea_port_res *pr)
+{
+ int i;
+ int ret = -EINVAL;
+
+ EDEB_EN(7, "Not completed yet...");
+
+ ret = ehea_destroy_qp(pr->qp);
+ if (ret)
+ EDEB_ERR(4, "could not destroy queue pair");
+
+ ret = ehea_destroy_cq(pr->send_cq);
+ if (ret)
+ EDEB_ERR(4, "could not destroy send_cq");
+
+ ret = ehea_destroy_cq(pr->recv_cq);
+ if (ret)
+ EDEB_ERR(4, "could not destroy recv_cq");
+
+ ret = ehea_destroy_eq(pr->send_eq);
+ if (ret)
+ EDEB_ERR(4, "could not destroy send_eq");
+
+ ret = ehea_destroy_eq(pr->recv_eq);
+ if (ret)
+ EDEB_ERR(4, "could not destroy recv_eq");
+
+ for (i = 0; i < pr->skb_arr_rq1_len; i++) {
+ if (pr->skb_arr_rq1[i])
+ dev_kfree_skb(pr->skb_arr_rq1[i]);
+ }
+
+ for (i = 0; i < pr->skb_arr_rq2_len; i++)
+ if (pr->skb_arr_rq2[i])
+ dev_kfree_skb(pr->skb_arr_rq2[i]);
+
+ for (i = 0; i < pr->skb_arr_rq3_len; i++)
+ if (pr->skb_arr_rq3[i])
+ dev_kfree_skb(pr->skb_arr_rq3[i]);
+
+ for (i = 0; i < pr->skb_arr_sq_len; i++)
+ if (pr->skb_arr_sq[i])
+ dev_kfree_skb(pr->skb_arr_sq[i]);
+
+ vfree(pr->skb_arr_sq);
+ vfree(pr->skb_arr_rq1);
+ vfree(pr->skb_arr_rq2);
+ vfree(pr->skb_arr_rq3);
+
+ ehea_rem_smrs(pr);
+ EDEB_EX(7, "ret=%d", ret);
+ return ret;
+}
+
+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 inline void write_swqe2_data(struct sk_buff *skb,
+ struct net_device *dev,
+ struct ehea_swqe *swqe,
+ u32 lkey)
+{
+ int skb_data_size, nfrags, headersize, i, sg1entry_contains_frag_data;
+ struct ehea_vsgentry *sg_list;
+ struct ehea_vsgentry *sg1entry;
+ struct ehea_vsgentry *sgentry;
+ u8 *imm_data;
+ u64 tmp_addr;
+ skb_frag_t *frag;
+ EDEB_EN(7, "");
+
+ skb_data_size = skb->len - skb->data_len;
+ nfrags = skb_shinfo(skb)->nr_frags;
+ sg1entry = &swqe->u.immdata_desc.sg_entry;
+ sg_list = (struct ehea_vsgentry*)&swqe->u.immdata_desc.sg_list;
+ imm_data = &swqe->u.immdata_desc.immediate_data[0];
+ swqe->descriptors = 0;
+ sg1entry_contains_frag_data = 0;
+
+ if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size) {
+ /* 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 =
+ get_swqe_addr(tmp_addr, 0);
+
+ swqe->descriptors++;
+ }
+ } else
+ EDEB_ERR(4, "Cannot handle fragmented headers");
+ } else {
+ /* 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 = get_swqe_addr(tmp_addr, 0);
+ swqe->descriptors++;
+ }
+ } else {
+ memcpy(imm_data, skb->data, skb_data_size);
+ swqe->immediate_data_length = skb_data_size;
+ }
+ }
+
+ /* 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 = get_swqe_addr(tmp_addr,
+ EHEA_MR_TX_DATA_PN);
+ 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 = get_swqe_addr(tmp_addr,
+ EHEA_MR_TX_DATA_PN + i);
+ }
+ }
+
+ EDEB_EX(7, "");
+}
+
+static int ehea_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+ EDEB_ERR(4, "ioctl not supported: dev=%s cmd=%d", dev->name, cmd);
+ return -EOPNOTSUPP;
+}
+
+static u64 ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
+{
+ u64 hret = H_HARDWARE;
+ u8 reg_type = 0;
+
+ if (hcallid == H_REG_BCMC) {
+ EDEB(7, "REGistering MAC for broadcast");
+ } else {
+ EDEB(7, "DEREGistering MAC for broadcast");
+ }
+
+ /* 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)
+ goto hcall_failed;
+
+ /* 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);
+hcall_failed:
+ return hret;
+}
+
+static int ehea_set_mac_addr(struct net_device *dev, void *sa)
+{
+ int ret = -EOPNOTSUPP;
+ u64 hret = H_HARDWARE;
+ struct hcp_query_ehea_port_cb_0 *ehea_port_cb_0 = NULL;
+ struct ehea_port *port = (struct ehea_port*)dev->priv;
+ struct sockaddr *mac_addr = (struct sockaddr*)sa;
+
+ EDEB_EN(7, "devname=%s", dev->name);
+ EDEB_DMP(7, (u8*)&(mac_addr->sa_data[0]), 14, "");
+
+ if (!is_valid_ether_addr(mac_addr->sa_data)) {
+ ret = -EADDRNOTAVAIL;
+ goto invalid_mac;
+ }
+
+ ehea_port_cb_0 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
+
+ if (!ehea_port_cb_0) {
+ EDEB_ERR(4, "No memory for ehea_port control block");
+ ret = -ENOMEM;
+ goto kzalloc_failed;
+ }
+
+ memcpy((u8*)(&(ehea_port_cb_0->port_mac_addr)),
+ (u8*)&(mac_addr->sa_data[0]), 6);
+
+ ehea_port_cb_0->port_mac_addr = ehea_port_cb_0->port_mac_addr >> 16;
+
+ EDEB(7, "ehea_port_cb_0");
+ EDEB_DMP(7, (u8*)ehea_port_cb_0,
+ sizeof(struct hcp_query_ehea_port_cb_0), "");
+
+ hret = ehea_h_modify_ehea_port(port->adapter->handle,
+ port->logical_port_id,
+ H_PORT_CB0,
+ EHEA_BMASK_SET(H_PORT_CB0_MAC, 1),
+ (void*)ehea_port_cb_0);
+ if (hret != H_SUCCESS) {
+ ret = -EOPNOTSUPP;
+ goto hcall_failed;
+ }
+
+ memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
+
+ /* Deregister old MAC in PHYP */
+ hret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
+ if (hret) {
+ ret = -EOPNOTSUPP;
+ goto hcall_failed;
+ }
+
+ port->mac_addr = ehea_port_cb_0->port_mac_addr << 16;
+
+ /* Register new MAC in PHYP */
+ hret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
+ if (hret) {
+ ret = -EOPNOTSUPP;
+ goto hcall_failed;
+ }
+
+ ret = 0;
+
+hcall_failed:
+ kfree(ehea_port_cb_0);
+
+kzalloc_failed:
+invalid_mac:
+ EDEB_EX(7, "ret=%d", ret);
+ return ret;
+}
+
+static void ehea_promiscuous(struct net_device *dev, int enable)
+{
+ struct ehea_port *port = dev->priv;
+
+ if (!port->promisc) {
+ if (enable) {
+ /* Enable promiscuous mode */
+ EDEB(7, "Enabling IFF_PROMISC");
+ EDEB_ERR(4, "Enable promiscuous mode: "
+ "not yet implemented");
+ port->promisc = EHEA_ENABLE;
+ }
+ } else {
+ if (!enable) {
+ /* Disable promiscuous mode */
+ EDEB(7, "Disabling IFF_PROMISC");
+ EDEB_ERR(4, "Disable promiscuous mode: "
+ "not yet implemented");
+ port->promisc = EHEA_DISABLE;
+ }
+ }
+}
+
+static u64 ehea_multicast_reg_helper(struct ehea_port *port,
+ u64 mc_mac_addr,
+ u32 hcallid)
+{
+ u64 hret = H_HARDWARE;
+ u8 reg_type = 0;
+
+ 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 hcall_failed;
+
+ 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);
+hcall_failed:
+ return hret;
+}
+
+static int ehea_drop_multicast_list(struct net_device *dev)
+{
+ int ret = 0;
+ u64 hret = H_HARDWARE;
+ struct ehea_port *port = dev->priv;
+ struct ehea_mc_list *mc_entry = port->mc_list;
+ struct list_head *pos;
+ struct list_head *temp;
+
+ EDEB_EN(7, "devname=%s", dev->name);
+
+ if (!list_empty(&mc_entry->list)) {
+ list_for_each_safe(pos, temp, &(port->mc_list->list)) {
+ mc_entry = list_entry(pos, struct ehea_mc_list, list);
+
+ EDEB(7, "Deregistering MAC %lx", mc_entry->macaddr);
+
+ hret = ehea_multicast_reg_helper(port,
+ mc_entry->macaddr,
+ H_DEREG_BCMC);
+ if (hret) {
+ EDEB_ERR(4, "Failed deregistering mcast MAC");
+ ret = -EINVAL;
+ }
+
+ list_del(pos);
+ kfree(mc_entry);
+ }
+ }
+
+ EDEB_EX(7, "ret=%d", ret);
+ return ret;
+}
+
+static void ehea_allmulti(struct net_device *dev, int enable)
+{
+ u64 hret = H_HARDWARE;
+ struct ehea_port *port = dev->priv;
+
+ if (!port->allmulti) {
+ if (enable) {
+ /* Enable ALLMULTI */
+ EDEB(7, "Enabling IFF_ALLMULTI");
+ ehea_drop_multicast_list(dev);
+ hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
+ if (!hret)
+ port->allmulti = EHEA_ENABLE;
+ else
+ EDEB_ERR(4, "Enabling IFF_ALLMULTI failed!");
+ }
+ } else
+ if (!enable) {
+ /* Disable ALLMULTI */
+ EDEB(7, "Disabling IFF_ALLMULTI");
+ hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
+ if (!hret)
+ port->allmulti = EHEA_DISABLE;
+ else
+ EDEB_ERR(4, "Disabling IFF_ALLMULTI failed!");
+ }
+}
+
+static void ehea_add_multicast_entry(struct ehea_port* port, u8* mc_mac_addr)
+{
+ u64 hret = H_HARDWARE;
+ struct ehea_mc_list *ehea_mcl_entry;
+
+ EDEB_EN(7, "port=%p", port);
+ EDEB_DMP(7, mc_mac_addr, MAX_ADDR_LEN, "dmi_addr");
+
+ ehea_mcl_entry =
+ (struct ehea_mc_list*)kzalloc(sizeof(struct ehea_mc_list),
+ GFP_KERNEL);
+ if (!ehea_mcl_entry) {
+ EDEB_ERR(4, "Out of memory");
+ return;
+ }
+
+ INIT_LIST_HEAD(&ehea_mcl_entry->list);
+
+ memcpy((u8*)&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 {
+ EDEB_ERR(4, "Failed registering mcast MAC");
+ kfree(ehea_mcl_entry);
+ }
+
+ EDEB_EX(7, "");
+}
+
+static void ehea_set_multicast_list(struct net_device *dev)
+{
+ int ret;
+ int i;
+ struct ehea_port *port = dev->priv;
+ struct dev_mc_list *k_mcl_entry;
+
+ EDEB_EN(7, "devname=%s, mc_count=%d", dev->name, dev->mc_count);
+
+ if (dev->flags & IFF_PROMISC) {
+ ehea_promiscuous(dev, EHEA_ENABLE);
+ return;
+ }
+ ehea_promiscuous(dev, EHEA_DISABLE);
+
+ if (dev->flags & IFF_ALLMULTI) {
+ ehea_allmulti(dev, EHEA_ENABLE);
+ return;
+ }
+ ehea_allmulti(dev, EHEA_DISABLE);
+
+ EDEB(7, "Set individual multicast list");
+ 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, EHEA_ENABLE);
+ }
+
+ if (dev->mc_count > port->adapter->max_mc_mac) {
+ EDEB_ERR(4, "Mcast registration limit reached "
+ "(0x%lx). Use ALLMULTI!",
+ port->adapter->max_mc_mac);
+ goto escape;
+ }
+
+ 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);
+ }
+ }
+
+escape:
+ EDEB_EX(7, "");
+ 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 inline void ehea_xmit2(struct sk_buff *skb,
+ struct net_device *dev, struct ehea_swqe *swqe,
+ u32 lkey)
+{
+ int nfrags;
+ unsigned short skb_protocol = skb->protocol;
+ nfrags = skb_shinfo(skb)->nr_frags;
+ EDEB_EN(7, "skb->nfrags=%d (0x%X)", nfrags, nfrags);
+
+ if (skb_protocol == 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);
+
+ EDEB_EX(7, "");
+}
+
+static inline void ehea_xmit3(struct sk_buff *skb,
+ struct net_device *dev, struct ehea_swqe *swqe)
+{
+ int i;
+ skb_frag_t *frag;
+ int nfrags = skb_shinfo(skb)->nr_frags;
+ u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
+ u64 skb_protocol = skb->protocol;
+
+ EDEB_EN(7, "");
+ if (likely(skb_protocol == 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);
+
+ EDEB_EX(7, "");
+}
+
+static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ unsigned long flags;
+ struct ehea_port *port = (struct ehea_port*)dev->priv;
+ struct ehea_port_res *pr;
+ struct ehea_swqe *swqe;
+ u32 lkey;
+ int swqe_index;
+ EDEB_EN(7, "");
+
+ pr = &port->port_res[0];
+
+ EDEB(6, "MACaddr=0x%X, dev=%p\n"
+ "PAGE_SIZE=%d MAX_SKB_FRAGS=%d"
+ "skb=%p skb->data=%p skb->len=%d skb->data_len=0x%x nr_frags=%d",
+ *(u32*)port->netdev->dev_addr, dev,
+ (int)PAGE_SIZE,
+ (int)MAX_SKB_FRAGS,
+ skb,
+ skb->data, skb->len, skb->data_len, skb_shinfo(skb)->nr_frags);
+
+
+ if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
+ spin_lock_irqsave(&pr->netif_queue, flags);
+ if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
+ EDEB(7, "netif_stop_queue to be called");
+ netif_stop_queue(dev);
+ spin_unlock_irqrestore(&pr->netif_queue, flags);
+ return NETDEV_TX_BUSY;
+ }
+ spin_unlock_irqrestore(&pr->netif_queue, flags);
+ }
+ atomic_dec(&pr->swqe_avail);
+
+
+ EDEB_DMP(7, (u8*)skb->data, (skb->len - skb->data_len), "SKB_DATA");
+
+ spin_lock(&pr->xmit_lock);
+
+ swqe = ehea_get_swqe(pr->qp, &swqe_index);
+ EDEB(7, "Posting SWQE on QP wit qp_nr=%X\n",
+ pr->qp->init_attr.qp_nr);
+
+ memset(swqe, 0, 32);
+
+ if (skb->len <= SWQE3_MAX_IMM) {
+ u32 swqe_num = pr->swqe_id_counter;
+ ehea_xmit3(skb, dev, swqe);
+ swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_REFILL, EHEA_SIG_IV)
+ | EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
+ | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
+ if (pr->swqe_ll_count >= (EHEA_SIG_IV - 1)) {
+ swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
+ pr->swqe_ll_count = 0;
+ } else
+ pr->swqe_ll_count += 1;
+ /* only for debugging purpose */
+ EDEB_DMP(6, (u8*)swqe, 128, "swqe format 3");
+
+ } else {
+ swqe->wr_id =
+ EHEA_BMASK_SET(EHEA_WR_ID_REFILL, EHEA_SIG_IV_LONG)
+ | 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->skb_sq_index);
+ pr->skb_arr_sq[pr->skb_sq_index] = skb;
+ pr->skb_sq_index = (pr->skb_sq_index + 1) % pr->skb_arr_sq_len;
+
+ lkey = ehea_get_send_lkey(pr);
+ ehea_xmit2(skb, dev, swqe, lkey);
+
+ if (pr->swqe_count >= (EHEA_SIG_IV_LONG - 1)) {
+ swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
+ pr->swqe_count = 0;
+ } else
+ pr->swqe_count += 1;
+ /* only for debugging purpose */
+ EDEB_DMP(6, (u8*)swqe, 256, "swqe format 2");
+ }
+ pr->swqe_id_counter += 1;
+
+ if (port->vgrp && vlan_tx_tag_present(skb)) {
+ EDEB(7, "VLAN TAG included");
+ swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
+ swqe->vlan_tag = vlan_tx_tag_get(skb);
+ }
+ ehea_post_swqe(pr->qp, swqe);
+ pr->tx_packets++;
+
+ spin_unlock(&pr->xmit_lock);
+
+ EDEB_EX(7, "");
+ return NETDEV_TX_OK;
+}
+
+static void ehea_vlan_rx_register(struct net_device *dev,
+ struct vlan_group *grp)
+{
+ u64 hret = H_HARDWARE;
+ struct hcp_query_ehea_port_cb_1 *cb1 = NULL;
+ struct ehea_port *port = (struct ehea_port*)dev->priv;
+ struct ehea_adapter *adapter = port->adapter;
+
+ EDEB_EN(7, "net_device=%p port=%p adapter=%p", dev, port, adapter);
+
+ port->vgrp = grp;
+
+ cb1 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
+ if (!cb1) {
+ EDEB_ERR(4, "No memory for cb1");
+ goto vlan_reg_exit;
+ }
+
+ if (grp)
+ memset(cb1->vlan_filter, 0, sizeof(cb1->vlan_filter));
+ else
+ memset(cb1->vlan_filter, 1, 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) {
+ EDEB_ERR(4, "query_ehea_port failed for cb3");
+ }
+ kfree(cb1);
+
+vlan_reg_exit:
+ EDEB_EN(7, "dev=%p, vlan_group=%p", dev, grp);
+}
+
+static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
+{
+ int index;
+ u64 hret = H_HARDWARE;
+ struct ehea_port *port = (struct ehea_port*)dev->priv;
+ struct hcp_query_ehea_port_cb_1 *cb1 = NULL;
+ struct ehea_adapter *adapter = port->adapter;
+ EDEB_EN(7, "dev=%p, vlan_id=%d", dev, vid);
+
+ cb1 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
+ if (!cb1) {
+ EDEB_ERR(4, "No memory for cb1");
+ goto vlan_kill_exit;
+ }
+ hret = ehea_h_query_ehea_port(adapter->handle,
+ port->logical_port_id,
+ H_PORT_CB1,
+ H_PORT_CB1_ALL,
+ cb1);
+
+ if (hret != H_SUCCESS) {
+ EDEB_ERR(4, "query_ehea_port failed for cb1");
+ goto vlan_kill_exit;
+ }
+
+ 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)
+ EDEB_ERR(4, "modify_ehea_port failed for cb3");
+
+ kfree(cb1);
+
+vlan_kill_exit:
+ EDEB_EX(7, "");
+
+}
+
+static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
+{
+ int index;
+ u64 hret = H_HARDWARE;
+ struct ehea_port *port = (struct ehea_port*)dev->priv;
+ struct ehea_adapter *adapter = port->adapter;
+ struct hcp_query_ehea_port_cb_1 *cb1 = NULL;
+ EDEB_EN(7, "dev=%p, vlan_id=%d", dev, vid);
+ if (port->vgrp)
+ port->vgrp->vlan_devices[vid] = NULL;
+
+ cb1 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
+ if (!cb1) {
+ EDEB_ERR(4, "No memory for cb1");
+ goto vlan_kill_exit;
+ }
+ hret = ehea_h_query_ehea_port(adapter->handle,
+ port->logical_port_id,
+ H_PORT_CB1,
+ H_PORT_CB1_ALL,
+ cb1);
+
+ if (hret != H_SUCCESS) {
+ EDEB_ERR(4, "query_ehea_port failed for cb1");
+ goto vlan_kill_exit;
+ }
+
+ 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)
+ EDEB_ERR(4, "modify_ehea_port failed for cb3");
+ kfree(cb1);
+
+vlan_kill_exit:
+ EDEB_EX(7, "");
+}
+
+int ehea_stop_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
+{
+ int ret = -EINVAL;
+ u64 hret = H_HARDWARE;
+ u16 dummy16;
+ u64 dummy64;
+ struct hcp_modify_qp_cb_0 *cb0 = NULL;
+
+ EDEB_EN(7, "qp=%p", qp);
+
+ cb0 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
+
+ if (!cb0) {
+ EDEB_ERR(4, "No memory for modify_qp control block");
+ ret = -ENOMEM;
+ goto kzalloc_failed;
+ }
+
+ /* Reset queue pair */
+ cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RESET;
+ hret = ehea_h_modify_ehea_qp(adapter->handle,
+ 0,
+ qp->ipz_qp_handle,
+ EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1),
+ cb0,
+ &dummy64, &dummy64, &dummy16, &dummy16);
+ if (hret != H_SUCCESS) {
+ EDEB_ERR(4, "Failed resetting the queue pair");
+ goto modify_qp_failed;
+ }
+
+ /* Disable queue pair */
+ cb0->qp_ctl_reg = H_QP_CR_STATE_RESET;
+ hret = ehea_h_modify_ehea_qp(adapter->handle,
+ 0,
+ qp->ipz_qp_handle,
+ EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1),
+ cb0,
+ &dummy64, &dummy64, &dummy16, &dummy16);
+ if (hret != H_SUCCESS) {
+ EDEB_ERR(4, "Failed disabling the queue pair");
+ goto modify_qp_failed;
+ }
+
+ ret = 0;
+
+modify_qp_failed:
+ kfree(cb0);
+
+kzalloc_failed:
+ return ret;
+}
+
+int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
+{
+ int ret = -EINVAL;
+ u64 hret = H_HARDWARE;
+ u16 dummy16 = 0;
+ u64 dummy64 = 0;
+ struct hcp_modify_qp_cb_0* cb0 = NULL;
+
+ EDEB_EN(7, "qp=%p", qp);
+
+ cb0 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
+ if (!cb0) {
+ EDEB_ERR(4, "No mem to allocate control block");
+ ret = -ENOMEM;
+ goto failure;
+ }
+
+ hret = ehea_h_query_ehea_qp(adapter->handle,
+ 0, qp->ipz_qp_handle,
+ EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
+ if (hret != H_SUCCESS) {
+ EDEB_ERR(4, "query_ehea_qp failed (1)\n");
+ goto failure;
+ }
+
+ cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
+ hret = ehea_h_modify_ehea_qp(adapter->handle,
+ 0, qp->ipz_qp_handle,
+ EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
+ &dummy64, &dummy64, &dummy16, &dummy16);
+ if (hret != H_SUCCESS) {
+ EDEB_ERR(4, "modify_ehea_qp failed (1)\n");
+ goto failure;
+ }
+
+ hret = ehea_h_query_ehea_qp(adapter->handle,
+ 0, qp->ipz_qp_handle,
+ EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
+ if (hret != H_SUCCESS) {
+ EDEB_ERR(4, "query_ehea_qp failed (2)\n");
+ goto failure;
+ }
+
+ cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
+ hret = ehea_h_modify_ehea_qp(adapter->handle,
+ 0, qp->ipz_qp_handle,
+ EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
+ &dummy64, &dummy64, &dummy16, &dummy16);
+ if (hret != H_SUCCESS) {
+ EDEB_ERR(4, "modify_ehea_qp failed (2)\n");
+ goto failure;
+ }
+
+ hret = ehea_h_query_ehea_qp(adapter->handle,
+ 0, qp->ipz_qp_handle,
+ EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
+ if (hret != H_SUCCESS) {
+ EDEB_ERR(4, "query_ehea_qp failed (3)\n");
+ goto failure;
+ }
+
+ cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
+ hret = ehea_h_modify_ehea_qp(adapter->handle,
+ 0, qp->ipz_qp_handle,
+ EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
+ &dummy64, &dummy64, &dummy16, &dummy16);
+ if (hret != H_SUCCESS) {
+ EDEB_ERR(4, "modify_ehea_qp failed (3)\n");
+ goto failure;
+ }
+
+ hret = ehea_h_query_ehea_qp(adapter->handle,
+ 0, qp->ipz_qp_handle,
+ EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
+ if (hret != H_SUCCESS) {
+ EDEB_ERR(4, "query_ehea_qp failed (4)\n");
+ goto failure;
+ }
+
+ ret = 0;
+
+failure:
+ kfree(cb0);
+ EDEB_EX(7, "ret=%d", ret);
+ return ret;
+}
+
+static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
+ int add_tx_qps)
+{
+ int i, k;
+ int ret;
+ struct port_res_cfg pr_cfg, pr_cfg_small_rx;
+ enum ehea_eq_type eq_type = EHEA_EQ;
+
+ EDEB_EN(7, "");
+
+ port->qp_eq = ehea_create_eq(port->adapter, eq_type,
+ EHEA_MAX_ENTRIES_EQ, 1);
+ if (!port->qp_eq) {
+ EDEB_ERR(4, "ehea_create_eq failed (qp_eq)");
+ goto port_res_setup_failed2;
+ }
+
+ pr_cfg.max_entries_rcq = EHEA_MAX_CQE_COUNT;
+ pr_cfg.max_entries_scq = EHEA_MAX_CQE_COUNT;
+ pr_cfg.max_entries_sq = EHEA_MAX_ENTRIES_SQ;
+ pr_cfg.max_entries_rq1 = EHEA_MAX_ENTRIES_RQ1;
+ pr_cfg.max_entries_rq2 = EHEA_MAX_ENTRIES_RQ2;
+ pr_cfg.max_entries_rq3 = EHEA_MAX_ENTRIES_RQ3;
+
+ pr_cfg_small_rx.max_entries_rcq = 1;
+ pr_cfg_small_rx.max_entries_scq = EHEA_MAX_CQE_COUNT;
+ pr_cfg_small_rx.max_entries_sq = EHEA_MAX_ENTRIES_SQ;
+ 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 port_res_setup_failed;
+ }
+ 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 port_res_setup_failed;
+ }
+ EDEB_EX(7, "");
+ return 0;
+
+port_res_setup_failed:
+ for(k = 0; k < i; k++) {
+ ehea_clean_port_res(port, &port->port_res[k]);
+ }
+port_res_setup_failed2:
+ ret = ehea_destroy_eq(port->qp_eq);
+ if (ret)
+ EDEB_ERR(4, "could not destroy qp_eq");
+
+ EDEB_EX(7, "");
+ return -EINVAL;
+}
+
+void ehea_clean_all_port_res(struct ehea_port *port)
+{
+ int ret;
+ int i;
+ for(i = 0; i < port->num_def_qps + port->num_tx_qps; i++)
+ ehea_clean_port_res(port, &port->port_res[i]);
+
+ ret = ehea_destroy_eq(port->qp_eq);
+ if (ret)
+ EDEB_ERR(4, "could not destroy qp_eq");
+}
+
+int ehea_open(struct net_device *dev)
+{
+ u64 hret = H_HARDWARE;
+ int i;
+ int ret = -EIO;
+ struct ehea_port *port = (struct ehea_port*)dev->priv;
+ u64 mac_addr = 0;
+
+ EDEB_EN(7, "logical_port_id=%d", port->logical_port_id);
+
+ ret = ehea_port_res_setup(port, port->num_def_qps, port->num_tx_qps);
+
+ if (ret)
+ goto port_res_setup_failed;
+
+ /* Set default QP for this port */
+ ret = ehea_configure_port(port);
+ if (ret) {
+ EDEB_ERR(4, "ehea_configure_port failed");
+ goto reg_failed;
+ }
+
+ hret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
+ if (hret) {
+ ret = -EIO;
+ goto reg_failed;
+ }
+ mac_addr = (*(u64*)dev->dev_addr) >> 16;
+
+ ret = ehea_reg_interrupts(dev);
+ if (ret)
+ goto irq_reg_failed;
+
+ for(i = 0; i < port->num_def_qps + port->num_tx_qps; i++) {
+ ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
+ if (ret)
+ goto activate_qp_failed;
+ }
+
+ for(i = 0; i < port->num_def_qps + port->num_tx_qps; i++)
+ ehea_fill_port_res(&port->port_res[i]);
+
+ netif_start_queue(dev);
+ ret = 0;
+ goto done;
+
+activate_qp_failed:
+ ehea_free_interrupts(dev);
+
+irq_reg_failed:
+ ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
+
+reg_failed:
+ ehea_clean_all_port_res(port);
+
+port_res_setup_failed:
+done:
+ EDEB_EX(7, "ret=%d", ret);
+ return ret;
+}
+
+static int ehea_stop(struct net_device *dev)
+{
+ struct ehea_port *port = (struct ehea_port*)dev->priv;
+
+ EDEB_EN(7, "");
+ netif_stop_queue(dev);
+ ehea_drop_multicast_list(dev);
+ ehea_stop_qp(port->adapter, port->port_res[0].qp);
+ ehea_free_interrupts(dev);
+
+ ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
+ ehea_clean_all_port_res(port);
+
+ EDEB_EX(7, "");
+ return 0;
+}
+
+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 ehea_sense_adapter_attr(struct ehea_adapter *adapter)
+{
+ int ret = -EINVAL;
+ u64 hret = H_HARDWARE;
+ struct hcp_query_ehea *query_ehea_cb = NULL;
+
+ EDEB_EN(7, "");
+
+ query_ehea_cb = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
+
+ if (!query_ehea_cb) {
+ EDEB_ERR(4, "No memory for query_ehea control block");
+ ret = -ENOMEM;
+ goto kzalloc_failed;
+ }
+
+ hret = ehea_h_query_ehea(adapter->handle, query_ehea_cb);
+ if (hret != H_SUCCESS) {
+ goto query_ehea_failed;
+ }
+
+ adapter->num_ports = query_ehea_cb->num_ports;
+ adapter->max_mc_mac = query_ehea_cb->max_mc_mac - 1;
+
+ ret = 0;
+
+query_ehea_failed:
+ kfree(query_ehea_cb);
+
+kzalloc_failed:
+ EDEB_EX(7, "ret=%d, num_ports=%d, max_mc_mac=0x%lx",
+ ret, adapter->num_ports, adapter->max_mc_mac);
+ return ret;
+}
+
+static int ehea_sense_port_attr(struct ehea_adapter *adapter, int portnum)
+{
+ int ret = -EINVAL;
+ u64 hret = H_HARDWARE;
+ struct ehea_port *port = adapter->port[portnum];
+ struct hcp_query_ehea_port_cb_0 *query_ehea_port_cb_0 = NULL;
+
+ EDEB_EN(7, "adapter=%p, portnum=%d", adapter, portnum);
+
+ /* allocate memory for control block */
+ query_ehea_port_cb_0 =
+ kzalloc(sizeof(*query_ehea_port_cb_0), GFP_KERNEL);
+
+ if (!query_ehea_port_cb_0) {
+ EDEB_ERR(4, "No memory for query_ehea_port control block");
+ ret = -ENOMEM;
+ goto kzalloc_failed;
+ }
+
+ hret = ehea_h_query_ehea_port(adapter->handle,
+ adapter->port[portnum]->logical_port_id,
+ H_PORT_CB0,
+ EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
+ query_ehea_port_cb_0);
+
+ if (hret != H_SUCCESS) {
+ ret = -EPERM;
+ goto query_ehea_port_failed;
+ }
+
+ EDEB_DMP(7, (u8 *) query_ehea_port_cb_0,
+ sizeof(struct hcp_query_ehea_port_cb_0), "After HCALL");
+
+
+ /* MAC address */
+ port->mac_addr = query_ehea_port_cb_0->port_mac_addr << 16;
+
+ /* Port speed */
+ switch (query_ehea_port_cb_0->port_speed) {
+ case H_PORT_SPEED_10M_H:
+ port->port_speed = EHEA_SPEED_10M;
+ port->full_duplex = 0;
+ break;
+ case H_PORT_SPEED_10M_F:
+ port->port_speed = EHEA_SPEED_10M;
+ port->full_duplex = 1;
+ break;
+ case H_PORT_SPEED_100M_H:
+ port->port_speed = EHEA_SPEED_100M;
+ port->full_duplex = 0;
+ break;
+ case H_PORT_SPEED_100M_F:
+ port->port_speed = EHEA_SPEED_100M;
+ port->full_duplex = 1;
+ break;
+ case H_PORT_SPEED_1G_F:
+ port->port_speed = EHEA_SPEED_1G;
+ port->full_duplex = 1;
+ break;
+ case H_PORT_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 = query_ehea_port_cb_0->num_default_qps;
+ if (port->num_def_qps >= EHEA_NUM_TX_QP)
+ port->num_tx_qps = 0;
+ else
+ port->num_tx_qps = EHEA_NUM_TX_QP - port->num_def_qps;
+
+ EDEB(7, "MAC address=0x%lX", adapter->port[portnum]->mac_addr >> 16);
+
+ ret = 0;
+
+query_ehea_port_failed:
+ kfree(query_ehea_port_cb_0);
+
+kzalloc_failed:
+ EDEB_EX(7,"MACaddr=0x%lX, portspeed=%dMbps, fullduplex=%d, "
+ "num_def_qps=%d",
+ port->mac_addr >> 16,
+ port->port_speed, port->full_duplex, port->num_def_qps);
+ return ret;
+}
+
+static int ehea_setup_single_port(struct ehea_adapter *adapter,
+ int portnum, struct device_node *dn)
+{
+ int ret = -EINVAL;
+ u64 hret = H_HARDWARE;
+ struct ehea_port *port = NULL;
+ struct net_device *dev = NULL;
+ struct hcp_query_ehea_port_cb_4 *cb4;
+ u32 *dn_log_port_id = NULL;
+
+ EDEB_EN(7, "Initializing port #%d. adapter=%p", portnum, adapter);
+
+ port = adapter->port[portnum];
+
+ if (!dn) {
+ EDEB_ERR(4, "Bad device node: dn=%p", dn);
+ goto done;
+ }
+
+ 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) {
+ EDEB_ERR(4, "Bad device node: dn_log_port_id=%p",
+ dn_log_port_id);
+ goto done;
+ }
+ port->logical_port_id = *dn_log_port_id;
+ port->adapter = adapter;
+ port->mc_list =
+ (struct ehea_mc_list*)kzalloc(sizeof(struct ehea_mc_list),
+ GFP_KERNEL);
+ if (!port->mc_list) {
+ EDEB_ERR(4, "No memory for multicast list");
+ goto done;
+ }
+
+ INIT_LIST_HEAD(&port->mc_list->list);
+
+ ret = ehea_sense_port_attr(adapter, portnum);
+ if (ret)
+ goto done;
+
+ /* initialize net_device structure */
+ dev = alloc_etherdev(sizeof(struct ehea_port));
+
+ if (!dev) {
+ EDEB_ERR(4, "No memory for net_device");
+ ret = -ENOMEM;
+ goto done;
+ }
+
+ cb4 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
+ if (!cb4) {
+ EDEB_ERR(4, "No memory 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,
+ (void*)cb4);
+ if (hret != H_SUCCESS)
+ EDEB_ERR(4, "Jumbo frames not activated");
+ }
+
+ 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->do_ioctl = ehea_ioctl;
+ dev->set_mac_address = ehea_set_mac_addr;
+ dev->change_mtu = ehea_change_mtu;
+ dev->priv = port;
+
+ 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->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;
+
+ ehea_set_ethtool_ops(dev);
+
+ ret = register_netdev(dev);
+ if (ret) {
+ EDEB_ERR(4, "register_netdev failed. ret=%d", ret);
+ goto reg_netdev_failed;
+ }
+
+ port->netdev = dev;
+
+ ret = 0;
+
+ goto done;
+
+reg_netdev_failed:
+ free_netdev(port->netdev);
+ kfree(port->mc_list);
+
+done:
+ EDEB_EX(7, "logical port id=0x%x", port->logical_port_id);
+ return ret;
+}
+
+static int ehea_setup_ports(struct ehea_adapter *adapter)
+{
+ int ret = -EINVAL;
+ int i;
+ int port_setup_ok = 0;
+ struct ehea_port *port = NULL;
+ struct device_node *dn = NULL;
+
+ EDEB_EX(7, "");
+
+ /* 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 */
+ port = kzalloc(sizeof(struct ehea_port), GFP_KERNEL);
+
+ if (!port) {
+ EDEB_ERR(4, "No memory for ehea_port");
+ break; /* continuing not reasonable */
+ }
+
+ adapter->port[i] = port;
+ dn = of_find_node_by_name(dn, "ethernet");
+ ret = ehea_setup_single_port(adapter, i, dn);
+
+ if (ret) {
+ /* Free mem for this port struct. the others will be
+ processed on rollback */
+ kfree(port);
+ adapter->port[i] = NULL;
+ }
+ }
+
+ 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 > 0)
+ ret = 0; /* At least some ports are setup correctly */
+
+ EDEB_EX(7, "");
+ return ret;
+}
+
+static int __devinit ehea_probe(struct ibmebus_dev *dev,
+ const struct of_device_id *id)
+{
+ int ret = -EINVAL;
+ struct ehea_adapter *adapter = NULL;
+ u64 *adapter_handle = NULL;
+
+ EDEB_EN(7, "ibmebus_dev=%p, of_device_id=%p", dev, id);
+
+ adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
+
+ if (!adapter) {
+ EDEB_ERR(4, "No memory for ehea_adapter");
+ ret = -ENOMEM;
+ goto kzalloc_adapter_failed;
+ }
+
+
+ adapter_handle = (u64*)get_property(dev->ofdev.node, "ibm,hea-handle",
+ NULL);
+
+ if (!adapter_handle) {
+ EDEB_ERR(4, "Failed getting handle for adapter '%s'",
+ dev->ofdev.node->full_name);
+ ret = -ENODEV;
+ goto get_property_failed;
+ }
+
+ adapter->handle = *adapter_handle;
+ adapter->pd = EHEA_PD_ID;
+
+ dev->ofdev.dev.driver_data = adapter;
+
+ ret = ehea_reg_mr_adapter(adapter);
+ if (ret)
+ goto register_mr_failed;
+
+ /* initialize adapter and ports */
+ /* get adapter properties */
+ ret = ehea_sense_adapter_attr(adapter);
+ if (ret)
+ goto sense_adapter_failed;
+
+ adapter->neq = ehea_create_eq(adapter,
+ EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
+ if (!adapter->neq)
+ goto create_neq_failed;
+
+ 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",
+ (void*)adapter);
+ if (ret)
+ goto request_irq_failed;
+
+ ret = ehea_setup_ports(adapter);
+ if (ret)
+ goto setup_ports_failed;
+
+ ret = 0;
+ goto done;
+
+setup_ports_failed:
+request_irq_failed:
+ ehea_destroy_eq(adapter->neq);
+create_neq_failed:
+sense_adapter_failed:
+ ehea_dereg_mr_adapter(adapter);
+register_mr_failed:
+get_property_failed:
+ kfree(adapter);
+kzalloc_adapter_failed:
+done:
+ EDEB_EX(7, "");
+ return ret;
+}
+
+int __init ehea_module_init(void)
+{
+ int ret = -EINVAL;
+
+ EDEB_EN(7, "");
+
+ printk(KERN_INFO "%s Ethernet Device Driver (Release %s)\n",
+ EHEA_DRIVER_NAME,
+ EHEA_DRIVER_VERSION);
+
+
+ ret = ibmebus_register_driver(&ehea_driver);
+ if (ret) {
+ EDEB_ERR(4, "Failed registering eHEA device driver on ebus");
+ return -EINVAL;
+ }
+
+ EDEB_EX(7, "");
+ return 0;
+}
+
+static void ehea_shutdown_single_port(struct ehea_adapter *adapter, int portnum)
+{
+ struct ehea_port *port = adapter->port[portnum];
+
+ EDEB_EN(7, "");
+
+ if (port) {
+ EDEB(7, "Shutting down port #%d.", portnum);
+ unregister_netdev(port->netdev);
+ free_netdev(port->netdev);
+ kfree(port->mc_list);
+ kfree(port);
+ adapter->port[portnum] = NULL;
+ } else
+ EDEB(7, "Port #%d not setup. Doing nothing.", portnum);
+
+ EDEB_EX(7, "");
+}
+
+static int __devexit ehea_remove(struct ibmebus_dev *dev)
+{
+ int ret = -EINVAL;
+ struct ehea_adapter *adapter = dev->ofdev.dev.driver_data;
+ int i;
+
+ EDEB_EN(7, "ibmebus_dev=%p", dev);
+
+ for (i = 0; i < adapter->num_ports; i++)
+ ehea_shutdown_single_port(adapter, i);
+
+ ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
+
+ ehea_destroy_eq(adapter->neq);
+
+ ret = ehea_dereg_mr_adapter(adapter);
+ if (ret)
+ goto deregister_mr_failed;
+ kfree(adapter);
+ ret = 0;
+
+deregister_mr_failed:
+ EDEB_EX(7, "");
+ return ret;
+}
+
+static void __exit ehea_module_exit(void)
+{
+ EDEB_EN(7, "");
+
+ ibmebus_unregister_driver(&ehea_driver);
+ EDEB_EX(7, "");
+}
+
+module_init(ehea_module_init);
+module_exit(ehea_module_exit);
-
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