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authorJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-05-13 14:29:12 -0700
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-08-11 02:41:59 -0700
commit9aa3283595451ca093500ff0977b106e1f465586 (patch)
tree89cd128f037b029b67f73fbff7d8cc38177c2b27 /drivers/net/ehea/ehea_main.c
parent86387e1ac4fcaa45ff5578013a78593d1a0ba279 (diff)
ehea/ibm*: Move the IBM drivers
Move the IBM drivers into drivers/net/ethernet/ibm/ and make the necessary Kconfig and Makefile changes. - Renamed ibm_new_emac to emac - Cleaned up Makefile and Kconfig options which referred to IBM_NEW_EMAC to IBM_EMAC - ibmlana driver is a National Semiconductor SONIC driver so it was not moved CC: Christoph Raisch <raisch@de.ibm.com> CC: Santiago Leon <santil@linux.vnet.ibm.com> CC: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: David Gibson <dwg@au1.ibm.com> CC: Kyle Lucke <klucke@us.ibm.com> CC: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ehea/ehea_main.c')
-rw-r--r--drivers/net/ehea/ehea_main.c3768
1 files changed, 0 insertions, 3768 deletions
diff --git a/drivers/net/ehea/ehea_main.c b/drivers/net/ehea/ehea_main.c
deleted file mode 100644
index be2cb4ab8b4f..000000000000
--- a/drivers/net/ehea/ehea_main.c
+++ /dev/null
@@ -1,3768 +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.
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/in.h>
-#include <linux/ip.h>
-#include <linux/tcp.h>
-#include <linux/udp.h>
-#include <linux/if.h>
-#include <linux/list.h>
-#include <linux/slab.h>
-#include <linux/if_ether.h>
-#include <linux/notifier.h>
-#include <linux/reboot.h>
-#include <linux/memory.h>
-#include <asm/kexec.h>
-#include <linux/mutex.h>
-#include <linux/prefetch.h>
-
-#include <net/ip.h>
-
-#include "ehea.h"
-#include "ehea_qmr.h"
-#include "ehea_phyp.h"
-
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
-MODULE_DESCRIPTION("IBM eServer HEA Driver");
-MODULE_VERSION(DRV_VERSION);
-
-
-static int msg_level = -1;
-static int rq1_entries = EHEA_DEF_ENTRIES_RQ1;
-static int rq2_entries = EHEA_DEF_ENTRIES_RQ2;
-static int rq3_entries = EHEA_DEF_ENTRIES_RQ3;
-static int sq_entries = EHEA_DEF_ENTRIES_SQ;
-static int use_mcs;
-static int use_lro;
-static int lro_max_aggr = EHEA_LRO_MAX_AGGR;
-static int num_tx_qps = EHEA_NUM_TX_QP;
-static int prop_carrier_state;
-
-module_param(msg_level, int, 0);
-module_param(rq1_entries, int, 0);
-module_param(rq2_entries, int, 0);
-module_param(rq3_entries, int, 0);
-module_param(sq_entries, int, 0);
-module_param(prop_carrier_state, int, 0);
-module_param(use_mcs, int, 0);
-module_param(use_lro, int, 0);
-module_param(lro_max_aggr, int, 0);
-module_param(num_tx_qps, int, 0);
-
-MODULE_PARM_DESC(num_tx_qps, "Number of TX-QPS");
-MODULE_PARM_DESC(msg_level, "msg_level");
-MODULE_PARM_DESC(prop_carrier_state, "Propagate carrier state of physical "
- "port to stack. 1:yes, 0:no. Default = 0 ");
-MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
- "[2^x - 1], x = [6..14]. Default = "
- __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
-MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
- "[2^x - 1], x = [6..14]. Default = "
- __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
-MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
- "[2^x - 1], x = [6..14]. Default = "
- __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
-MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue "
- "[2^x - 1], x = [6..14]. Default = "
- __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
-MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 0 ");
-
-MODULE_PARM_DESC(lro_max_aggr, " LRO: Max packets to be aggregated. Default = "
- __MODULE_STRING(EHEA_LRO_MAX_AGGR));
-MODULE_PARM_DESC(use_lro, " Large Receive Offload, 1: enable, 0: disable, "
- "Default = 0");
-
-static int port_name_cnt;
-static LIST_HEAD(adapter_list);
-static unsigned long ehea_driver_flags;
-static DEFINE_MUTEX(dlpar_mem_lock);
-struct ehea_fw_handle_array ehea_fw_handles;
-struct ehea_bcmc_reg_array ehea_bcmc_regs;
-
-
-static int __devinit ehea_probe_adapter(struct platform_device *dev,
- const struct of_device_id *id);
-
-static int __devexit ehea_remove(struct platform_device *dev);
-
-static struct of_device_id ehea_device_table[] = {
- {
- .name = "lhea",
- .compatible = "IBM,lhea",
- },
- {},
-};
-MODULE_DEVICE_TABLE(of, ehea_device_table);
-
-static struct of_platform_driver ehea_driver = {
- .driver = {
- .name = "ehea",
- .owner = THIS_MODULE,
- .of_match_table = ehea_device_table,
- },
- .probe = ehea_probe_adapter,
- .remove = ehea_remove,
-};
-
-void ehea_dump(void *adr, int len, char *msg)
-{
- int x;
- unsigned char *deb = adr;
- for (x = 0; x < len; x += 16) {
- pr_info("%s adr=%p ofs=%04x %016llx %016llx\n",
- msg, deb, x, *((u64 *)&deb[0]), *((u64 *)&deb[8]));
- deb += 16;
- }
-}
-
-void ehea_schedule_port_reset(struct ehea_port *port)
-{
- if (!test_bit(__EHEA_DISABLE_PORT_RESET, &port->flags))
- schedule_work(&port->reset_task);
-}
-
-static void ehea_update_firmware_handles(void)
-{
- struct ehea_fw_handle_entry *arr = NULL;
- struct ehea_adapter *adapter;
- int num_adapters = 0;
- int num_ports = 0;
- int num_portres = 0;
- int i = 0;
- int num_fw_handles, k, l;
-
- /* Determine number of handles */
- mutex_lock(&ehea_fw_handles.lock);
-
- list_for_each_entry(adapter, &adapter_list, list) {
- num_adapters++;
-
- for (k = 0; k < EHEA_MAX_PORTS; k++) {
- struct ehea_port *port = adapter->port[k];
-
- if (!port || (port->state != EHEA_PORT_UP))
- continue;
-
- num_ports++;
- num_portres += port->num_def_qps + port->num_add_tx_qps;
- }
- }
-
- num_fw_handles = num_adapters * EHEA_NUM_ADAPTER_FW_HANDLES +
- num_ports * EHEA_NUM_PORT_FW_HANDLES +
- num_portres * EHEA_NUM_PORTRES_FW_HANDLES;
-
- if (num_fw_handles) {
- arr = kcalloc(num_fw_handles, sizeof(*arr), GFP_KERNEL);
- if (!arr)
- goto out; /* Keep the existing array */
- } else
- goto out_update;
-
- list_for_each_entry(adapter, &adapter_list, list) {
- if (num_adapters == 0)
- break;
-
- for (k = 0; k < EHEA_MAX_PORTS; k++) {
- struct ehea_port *port = adapter->port[k];
-
- if (!port || (port->state != EHEA_PORT_UP) ||
- (num_ports == 0))
- continue;
-
- for (l = 0;
- l < port->num_def_qps + port->num_add_tx_qps;
- l++) {
- struct ehea_port_res *pr = &port->port_res[l];
-
- arr[i].adh = adapter->handle;
- arr[i++].fwh = pr->qp->fw_handle;
- arr[i].adh = adapter->handle;
- arr[i++].fwh = pr->send_cq->fw_handle;
- arr[i].adh = adapter->handle;
- arr[i++].fwh = pr->recv_cq->fw_handle;
- arr[i].adh = adapter->handle;
- arr[i++].fwh = pr->eq->fw_handle;
- arr[i].adh = adapter->handle;
- arr[i++].fwh = pr->send_mr.handle;
- arr[i].adh = adapter->handle;
- arr[i++].fwh = pr->recv_mr.handle;
- }
- arr[i].adh = adapter->handle;
- arr[i++].fwh = port->qp_eq->fw_handle;
- num_ports--;
- }
-
- arr[i].adh = adapter->handle;
- arr[i++].fwh = adapter->neq->fw_handle;
-
- if (adapter->mr.handle) {
- arr[i].adh = adapter->handle;
- arr[i++].fwh = adapter->mr.handle;
- }
- num_adapters--;
- }
-
-out_update:
- kfree(ehea_fw_handles.arr);
- ehea_fw_handles.arr = arr;
- ehea_fw_handles.num_entries = i;
-out:
- mutex_unlock(&ehea_fw_handles.lock);
-}
-
-static void ehea_update_bcmc_registrations(void)
-{
- unsigned long flags;
- struct ehea_bcmc_reg_entry *arr = NULL;
- struct ehea_adapter *adapter;
- struct ehea_mc_list *mc_entry;
- int num_registrations = 0;
- int i = 0;
- int k;
-
- spin_lock_irqsave(&ehea_bcmc_regs.lock, flags);
-
- /* Determine number of registrations */
- list_for_each_entry(adapter, &adapter_list, list)
- for (k = 0; k < EHEA_MAX_PORTS; k++) {
- struct ehea_port *port = adapter->port[k];
-
- if (!port || (port->state != EHEA_PORT_UP))
- continue;
-
- num_registrations += 2; /* Broadcast registrations */
-
- list_for_each_entry(mc_entry, &port->mc_list->list,list)
- num_registrations += 2;
- }
-
- if (num_registrations) {
- arr = kcalloc(num_registrations, sizeof(*arr), GFP_ATOMIC);
- if (!arr)
- goto out; /* Keep the existing array */
- } else
- goto out_update;
-
- list_for_each_entry(adapter, &adapter_list, list) {
- for (k = 0; k < EHEA_MAX_PORTS; k++) {
- struct ehea_port *port = adapter->port[k];
-
- if (!port || (port->state != EHEA_PORT_UP))
- continue;
-
- if (num_registrations == 0)
- goto out_update;
-
- arr[i].adh = adapter->handle;
- arr[i].port_id = port->logical_port_id;
- arr[i].reg_type = EHEA_BCMC_BROADCAST |
- EHEA_BCMC_UNTAGGED;
- arr[i++].macaddr = port->mac_addr;
-
- arr[i].adh = adapter->handle;
- arr[i].port_id = port->logical_port_id;
- arr[i].reg_type = EHEA_BCMC_BROADCAST |
- EHEA_BCMC_VLANID_ALL;
- arr[i++].macaddr = port->mac_addr;
- num_registrations -= 2;
-
- list_for_each_entry(mc_entry,
- &port->mc_list->list, list) {
- if (num_registrations == 0)
- goto out_update;
-
- arr[i].adh = adapter->handle;
- arr[i].port_id = port->logical_port_id;
- arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
- EHEA_BCMC_MULTICAST |
- EHEA_BCMC_UNTAGGED;
- arr[i++].macaddr = mc_entry->macaddr;
-
- arr[i].adh = adapter->handle;
- arr[i].port_id = port->logical_port_id;
- arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
- EHEA_BCMC_MULTICAST |
- EHEA_BCMC_VLANID_ALL;
- arr[i++].macaddr = mc_entry->macaddr;
- num_registrations -= 2;
- }
- }
- }
-
-out_update:
- kfree(ehea_bcmc_regs.arr);
- ehea_bcmc_regs.arr = arr;
- ehea_bcmc_regs.num_entries = i;
-out:
- spin_unlock_irqrestore(&ehea_bcmc_regs.lock, flags);
-}
-
-static struct net_device_stats *ehea_get_stats(struct net_device *dev)
-{
- struct ehea_port *port = netdev_priv(dev);
- struct net_device_stats *stats = &port->stats;
- struct hcp_ehea_port_cb2 *cb2;
- u64 hret, rx_packets, tx_packets, rx_bytes = 0, tx_bytes = 0;
- int i;
-
- memset(stats, 0, sizeof(*stats));
-
- cb2 = (void *)get_zeroed_page(GFP_KERNEL);
- if (!cb2) {
- netdev_err(dev, "no mem for cb2\n");
- 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) {
- netdev_err(dev, "query_ehea_port failed\n");
- 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;
- rx_bytes += port->port_res[i].rx_bytes;
- }
-
- tx_packets = 0;
- for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
- tx_packets += port->port_res[i].tx_packets;
- tx_bytes += port->port_res[i].tx_bytes;
- }
-
- stats->tx_packets = tx_packets;
- stats->multicast = cb2->rxmcp;
- stats->rx_errors = cb2->rxuerr;
- stats->rx_bytes = rx_bytes;
- stats->tx_bytes = tx_bytes;
- stats->rx_packets = rx_packets;
-
-out_herr:
- free_page((unsigned long)cb2);
-out:
- return stats;
-}
-
-static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
-{
- struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
- struct net_device *dev = pr->port->netdev;
- int max_index_mask = pr->rq1_skba.len - 1;
- int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes;
- int adder = 0;
- int i;
-
- pr->rq1_skba.os_skbs = 0;
-
- if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
- if (nr_of_wqes > 0)
- pr->rq1_skba.index = index;
- pr->rq1_skba.os_skbs = fill_wqes;
- return;
- }
-
- for (i = 0; i < fill_wqes; i++) {
- if (!skb_arr_rq1[index]) {
- skb_arr_rq1[index] = netdev_alloc_skb(dev,
- EHEA_L_PKT_SIZE);
- if (!skb_arr_rq1[index]) {
- netdev_info(dev, "Unable to allocate enough skb in the array\n");
- pr->rq1_skba.os_skbs = fill_wqes - i;
- break;
- }
- }
- index--;
- index &= max_index_mask;
- adder++;
- }
-
- if (adder == 0)
- return;
-
- /* Ring doorbell */
- ehea_update_rq1a(pr->qp, adder);
-}
-
-static void ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
-{
- struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
- struct net_device *dev = pr->port->netdev;
- int i;
-
- if (nr_rq1a > pr->rq1_skba.len) {
- netdev_err(dev, "NR_RQ1A bigger than skb array len\n");
- return;
- }
-
- for (i = 0; i < nr_rq1a; i++) {
- skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
- if (!skb_arr_rq1[i]) {
- netdev_info(dev, "Not enough memory to allocate skb array\n");
- break;
- }
- }
- /* Ring doorbell */
- ehea_update_rq1a(pr->qp, i - 1);
-}
-
-static int ehea_refill_rq_def(struct ehea_port_res *pr,
- struct ehea_q_skb_arr *q_skba, int rq_nr,
- int num_wqes, int wqe_type, int packet_size)
-{
- struct net_device *dev = pr->port->netdev;
- struct ehea_qp *qp = pr->qp;
- struct sk_buff **skb_arr = q_skba->arr;
- struct ehea_rwqe *rwqe;
- int i, index, max_index_mask, fill_wqes;
- int adder = 0;
- int ret = 0;
-
- fill_wqes = q_skba->os_skbs + num_wqes;
- q_skba->os_skbs = 0;
-
- if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
- q_skba->os_skbs = fill_wqes;
- return ret;
- }
-
- index = q_skba->index;
- max_index_mask = q_skba->len - 1;
- for (i = 0; i < fill_wqes; i++) {
- u64 tmp_addr;
- struct sk_buff *skb;
-
- skb = netdev_alloc_skb_ip_align(dev, packet_size);
- if (!skb) {
- q_skba->os_skbs = fill_wqes - i;
- if (q_skba->os_skbs == q_skba->len - 2) {
- netdev_info(pr->port->netdev,
- "rq%i ran dry - no mem for skb\n",
- rq_nr);
- ret = -ENOMEM;
- }
- break;
- }
-
- skb_arr[index] = skb;
- tmp_addr = ehea_map_vaddr(skb->data);
- if (tmp_addr == -1) {
- dev_kfree_skb(skb);
- q_skba->os_skbs = fill_wqes - i;
- ret = 0;
- break;
- }
-
- rwqe = ehea_get_next_rwqe(qp, rq_nr);
- rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
- | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
- rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
- rwqe->sg_list[0].vaddr = tmp_addr;
- rwqe->sg_list[0].len = packet_size;
- rwqe->data_segments = 1;
-
- index++;
- index &= max_index_mask;
- adder++;
- }
-
- q_skba->index = index;
- if (adder == 0)
- goto out;
-
- /* Ring doorbell */
- iosync();
- if (rq_nr == 2)
- ehea_update_rq2a(pr->qp, adder);
- else
- ehea_update_rq3a(pr->qp, adder);
-out:
- return ret;
-}
-
-
-static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
-{
- return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
- nr_of_wqes, EHEA_RWQE2_TYPE,
- EHEA_RQ2_PKT_SIZE);
-}
-
-
-static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
-{
- return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
- nr_of_wqes, EHEA_RWQE3_TYPE,
- EHEA_MAX_PACKET_SIZE);
-}
-
-static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
-{
- *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
- if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
- return 0;
- if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
- (cqe->header_length == 0))
- return 0;
- return -EINVAL;
-}
-
-static inline void ehea_fill_skb(struct net_device *dev,
- struct sk_buff *skb, struct ehea_cqe *cqe)
-{
- int length = cqe->num_bytes_transfered - 4; /*remove CRC */
-
- skb_put(skb, length);
- skb->protocol = eth_type_trans(skb, dev);
-
- /* The packet was not an IPV4 packet so a complemented checksum was
- calculated. The value is found in the Internet Checksum field. */
- if (cqe->status & EHEA_CQE_BLIND_CKSUM) {
- skb->ip_summed = CHECKSUM_COMPLETE;
- skb->csum = csum_unfold(~cqe->inet_checksum_value);
- } else
- skb->ip_summed = CHECKSUM_UNNECESSARY;
-}
-
-static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
- int arr_len,
- struct ehea_cqe *cqe)
-{
- int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
- struct sk_buff *skb;
- void *pref;
- int x;
-
- x = skb_index + 1;
- x &= (arr_len - 1);
-
- pref = skb_array[x];
- if (pref) {
- prefetchw(pref);
- prefetchw(pref + EHEA_CACHE_LINE);
-
- pref = (skb_array[x]->data);
- prefetch(pref);
- prefetch(pref + EHEA_CACHE_LINE);
- prefetch(pref + EHEA_CACHE_LINE * 2);
- prefetch(pref + EHEA_CACHE_LINE * 3);
- }
-
- skb = skb_array[skb_index];
- skb_array[skb_index] = NULL;
- return skb;
-}
-
-static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
- int arr_len, int wqe_index)
-{
- struct sk_buff *skb;
- void *pref;
- int x;
-
- x = wqe_index + 1;
- x &= (arr_len - 1);
-
- pref = skb_array[x];
- if (pref) {
- prefetchw(pref);
- prefetchw(pref + EHEA_CACHE_LINE);
-
- pref = (skb_array[x]->data);
- prefetchw(pref);
- prefetchw(pref + EHEA_CACHE_LINE);
- }
-
- skb = skb_array[wqe_index];
- skb_array[wqe_index] = NULL;
- return skb;
-}
-
-static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
- struct ehea_cqe *cqe, int *processed_rq2,
- int *processed_rq3)
-{
- struct sk_buff *skb;
-
- if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
- pr->p_stats.err_tcp_cksum++;
- if (cqe->status & EHEA_CQE_STAT_ERR_IP)
- pr->p_stats.err_ip_cksum++;
- if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
- pr->p_stats.err_frame_crc++;
-
- if (rq == 2) {
- *processed_rq2 += 1;
- skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
- dev_kfree_skb(skb);
- } else if (rq == 3) {
- *processed_rq3 += 1;
- skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
- dev_kfree_skb(skb);
- }
-
- if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
- if (netif_msg_rx_err(pr->port)) {
- pr_err("Critical receive error for QP %d. Resetting port.\n",
- pr->qp->init_attr.qp_nr);
- ehea_dump(cqe, sizeof(*cqe), "CQE");
- }
- ehea_schedule_port_reset(pr->port);
- return 1;
- }
-
- return 0;
-}
-
-static int get_skb_hdr(struct sk_buff *skb, void **iphdr,
- void **tcph, u64 *hdr_flags, void *priv)
-{
- struct ehea_cqe *cqe = priv;
- unsigned int ip_len;
- struct iphdr *iph;
-
- /* non tcp/udp packets */
- if (!cqe->header_length)
- return -1;
-
- /* non tcp packet */
- skb_reset_network_header(skb);
- iph = ip_hdr(skb);
- if (iph->protocol != IPPROTO_TCP)
- return -1;
-
- ip_len = ip_hdrlen(skb);
- skb_set_transport_header(skb, ip_len);
- *tcph = tcp_hdr(skb);
-
- /* check if ip header and tcp header are complete */
- if (ntohs(iph->tot_len) < ip_len + tcp_hdrlen(skb))
- return -1;
-
- *hdr_flags = LRO_IPV4 | LRO_TCP;
- *iphdr = iph;
-
- return 0;
-}
-
-static void ehea_proc_skb(struct ehea_port_res *pr, struct ehea_cqe *cqe,
- struct sk_buff *skb)
-{
- if (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT)
- __vlan_hwaccel_put_tag(skb, cqe->vlan_tag);
-
- if (skb->dev->features & NETIF_F_LRO)
- lro_receive_skb(&pr->lro_mgr, skb, cqe);
- else
- netif_receive_skb(skb);
-}
-
-static int ehea_proc_rwqes(struct net_device *dev,
- struct ehea_port_res *pr,
- int budget)
-{
- struct ehea_port *port = pr->port;
- struct ehea_qp *qp = pr->qp;
- struct ehea_cqe *cqe;
- struct sk_buff *skb;
- struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
- struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
- struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
- int skb_arr_rq1_len = pr->rq1_skba.len;
- int skb_arr_rq2_len = pr->rq2_skba.len;
- int skb_arr_rq3_len = pr->rq3_skba.len;
- int processed, processed_rq1, processed_rq2, processed_rq3;
- u64 processed_bytes = 0;
- int wqe_index, last_wqe_index, rq, port_reset;
-
- processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
- last_wqe_index = 0;
-
- cqe = ehea_poll_rq1(qp, &wqe_index);
- while ((processed < budget) && cqe) {
- ehea_inc_rq1(qp);
- processed_rq1++;
- processed++;
- if (netif_msg_rx_status(port))
- ehea_dump(cqe, sizeof(*cqe), "CQE");
-
- last_wqe_index = wqe_index;
- rmb();
- if (!ehea_check_cqe(cqe, &rq)) {
- if (rq == 1) {
- /* LL RQ1 */
- skb = get_skb_by_index_ll(skb_arr_rq1,
- skb_arr_rq1_len,
- wqe_index);
- if (unlikely(!skb)) {
- netif_info(port, rx_err, dev,
- "LL rq1: skb=NULL\n");
-
- skb = netdev_alloc_skb(dev,
- EHEA_L_PKT_SIZE);
- if (!skb) {
- netdev_err(dev, "Not enough memory to allocate skb\n");
- break;
- }
- }
- skb_copy_to_linear_data(skb, ((char *)cqe) + 64,
- cqe->num_bytes_transfered - 4);
- ehea_fill_skb(dev, skb, cqe);
- } else if (rq == 2) {
- /* RQ2 */
- skb = get_skb_by_index(skb_arr_rq2,
- skb_arr_rq2_len, cqe);
- if (unlikely(!skb)) {
- netif_err(port, rx_err, dev,
- "rq2: skb=NULL\n");
- 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)) {
- netif_err(port, rx_err, dev,
- "rq3: skb=NULL\n");
- break;
- }
- ehea_fill_skb(dev, skb, cqe);
- processed_rq3++;
- }
-
- processed_bytes += skb->len;
- ehea_proc_skb(pr, cqe, skb);
- } else {
- pr->p_stats.poll_receive_errors++;
- port_reset = ehea_treat_poll_error(pr, rq, cqe,
- &processed_rq2,
- &processed_rq3);
- if (port_reset)
- break;
- }
- cqe = ehea_poll_rq1(qp, &wqe_index);
- }
- if (dev->features & NETIF_F_LRO)
- lro_flush_all(&pr->lro_mgr);
-
- pr->rx_packets += processed;
- pr->rx_bytes += processed_bytes;
-
- ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
- ehea_refill_rq2(pr, processed_rq2);
- ehea_refill_rq3(pr, processed_rq3);
-
- return processed;
-}
-
-#define SWQE_RESTART_CHECK 0xdeadbeaff00d0000ull
-
-static void reset_sq_restart_flag(struct ehea_port *port)
-{
- int i;
-
- for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
- struct ehea_port_res *pr = &port->port_res[i];
- pr->sq_restart_flag = 0;
- }
- wake_up(&port->restart_wq);
-}
-
-static void check_sqs(struct ehea_port *port)
-{
- struct ehea_swqe *swqe;
- int swqe_index;
- int i, k;
-
- for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
- struct ehea_port_res *pr = &port->port_res[i];
- int ret;
- k = 0;
- swqe = ehea_get_swqe(pr->qp, &swqe_index);
- memset(swqe, 0, SWQE_HEADER_SIZE);
- atomic_dec(&pr->swqe_avail);
-
- swqe->tx_control |= EHEA_SWQE_PURGE;
- swqe->wr_id = SWQE_RESTART_CHECK;
- swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
- swqe->tx_control |= EHEA_SWQE_IMM_DATA_PRESENT;
- swqe->immediate_data_length = 80;
-
- ehea_post_swqe(pr->qp, swqe);
-
- ret = wait_event_timeout(port->restart_wq,
- pr->sq_restart_flag == 0,
- msecs_to_jiffies(100));
-
- if (!ret) {
- pr_err("HW/SW queues out of sync\n");
- ehea_schedule_port_reset(pr->port);
- return;
- }
- }
-}
-
-
-static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
-{
- struct sk_buff *skb;
- struct ehea_cq *send_cq = pr->send_cq;
- struct ehea_cqe *cqe;
- int quota = my_quota;
- int cqe_counter = 0;
- int swqe_av = 0;
- int index;
- unsigned long flags;
-
- cqe = ehea_poll_cq(send_cq);
- while (cqe && (quota > 0)) {
- ehea_inc_cq(send_cq);
-
- cqe_counter++;
- rmb();
-
- if (cqe->wr_id == SWQE_RESTART_CHECK) {
- pr->sq_restart_flag = 1;
- swqe_av++;
- break;
- }
-
- if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
- pr_err("Bad send completion status=0x%04X\n",
- cqe->status);
-
- if (netif_msg_tx_err(pr->port))
- ehea_dump(cqe, sizeof(*cqe), "Send CQE");
-
- if (cqe->status & EHEA_CQE_STAT_RESET_MASK) {
- pr_err("Resetting port\n");
- ehea_schedule_port_reset(pr->port);
- break;
- }
- }
-
- if (netif_msg_tx_done(pr->port))
- ehea_dump(cqe, sizeof(*cqe), "CQE");
-
- if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
- == EHEA_SWQE2_TYPE)) {
-
- index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
- skb = pr->sq_skba.arr[index];
- dev_kfree_skb(skb);
- pr->sq_skba.arr[index] = NULL;
- }
-
- swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
- quota--;
-
- cqe = ehea_poll_cq(send_cq);
- }
-
- ehea_update_feca(send_cq, cqe_counter);
- atomic_add(swqe_av, &pr->swqe_avail);
-
- spin_lock_irqsave(&pr->netif_queue, flags);
-
- if (pr->queue_stopped && (atomic_read(&pr->swqe_avail)
- >= pr->swqe_refill_th)) {
- netif_wake_queue(pr->port->netdev);
- pr->queue_stopped = 0;
- }
- spin_unlock_irqrestore(&pr->netif_queue, flags);
- wake_up(&pr->port->swqe_avail_wq);
-
- return cqe;
-}
-
-#define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
-#define EHEA_POLL_MAX_CQES 65535
-
-static int ehea_poll(struct napi_struct *napi, int budget)
-{
- struct ehea_port_res *pr = container_of(napi, struct ehea_port_res,
- napi);
- struct net_device *dev = pr->port->netdev;
- struct ehea_cqe *cqe;
- struct ehea_cqe *cqe_skb = NULL;
- int force_irq, wqe_index;
- int rx = 0;
-
- force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ);
- cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
-
- if (!force_irq)
- rx += ehea_proc_rwqes(dev, pr, budget - rx);
-
- while ((rx != budget) || force_irq) {
- pr->poll_counter = 0;
- force_irq = 0;
- napi_complete(napi);
- ehea_reset_cq_ep(pr->recv_cq);
- ehea_reset_cq_ep(pr->send_cq);
- ehea_reset_cq_n1(pr->recv_cq);
- ehea_reset_cq_n1(pr->send_cq);
- rmb();
- cqe = ehea_poll_rq1(pr->qp, &wqe_index);
- cqe_skb = ehea_poll_cq(pr->send_cq);
-
- if (!cqe && !cqe_skb)
- return rx;
-
- if (!napi_reschedule(napi))
- return rx;
-
- cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
- rx += ehea_proc_rwqes(dev, pr, budget - rx);
- }
-
- pr->poll_counter++;
- return rx;
-}
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
-static void ehea_netpoll(struct net_device *dev)
-{
- struct ehea_port *port = netdev_priv(dev);
- int i;
-
- for (i = 0; i < port->num_def_qps; i++)
- napi_schedule(&port->port_res[i].napi);
-}
-#endif
-
-static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
-{
- struct ehea_port_res *pr = param;
-
- napi_schedule(&pr->napi);
-
- return IRQ_HANDLED;
-}
-
-static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
-{
- struct ehea_port *port = param;
- struct ehea_eqe *eqe;
- struct ehea_qp *qp;
- u32 qp_token;
- u64 resource_type, aer, aerr;
- int reset_port = 0;
-
- eqe = ehea_poll_eq(port->qp_eq);
-
- while (eqe) {
- qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
- pr_err("QP aff_err: entry=0x%llx, token=0x%x\n",
- eqe->entry, qp_token);
-
- qp = port->port_res[qp_token].qp;
-
- resource_type = ehea_error_data(port->adapter, qp->fw_handle,
- &aer, &aerr);
-
- if (resource_type == EHEA_AER_RESTYPE_QP) {
- if ((aer & EHEA_AER_RESET_MASK) ||
- (aerr & EHEA_AERR_RESET_MASK))
- reset_port = 1;
- } else
- reset_port = 1; /* Reset in case of CQ or EQ error */
-
- eqe = ehea_poll_eq(port->qp_eq);
- }
-
- if (reset_port) {
- pr_err("Resetting port\n");
- ehea_schedule_port_reset(port);
- }
-
- return IRQ_HANDLED;
-}
-
-static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
- int logical_port)
-{
- int i;
-
- for (i = 0; i < EHEA_MAX_PORTS; i++)
- if (adapter->port[i])
- if (adapter->port[i]->logical_port_id == logical_port)
- return adapter->port[i];
- return NULL;
-}
-
-int ehea_sense_port_attr(struct ehea_port *port)
-{
- int ret;
- u64 hret;
- struct hcp_ehea_port_cb0 *cb0;
-
- /* may be called via ehea_neq_tasklet() */
- cb0 = (void *)get_zeroed_page(GFP_ATOMIC);
- if (!cb0) {
- pr_err("no mem for cb0\n");
- ret = -ENOMEM;
- goto out;
- }
-
- hret = ehea_h_query_ehea_port(port->adapter->handle,
- port->logical_port_id, H_PORT_CB0,
- EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
- cb0);
- if (hret != H_SUCCESS) {
- ret = -EIO;
- goto out_free;
- }
-
- /* MAC address */
- port->mac_addr = cb0->port_mac_addr << 16;
-
- if (!is_valid_ether_addr((u8 *)&port->mac_addr)) {
- ret = -EADDRNOTAVAIL;
- goto out_free;
- }
-
- /* Port speed */
- switch (cb0->port_speed) {
- case H_SPEED_10M_H:
- port->port_speed = EHEA_SPEED_10M;
- port->full_duplex = 0;
- break;
- case H_SPEED_10M_F:
- port->port_speed = EHEA_SPEED_10M;
- port->full_duplex = 1;
- break;
- case H_SPEED_100M_H:
- port->port_speed = EHEA_SPEED_100M;
- port->full_duplex = 0;
- break;
- case H_SPEED_100M_F:
- port->port_speed = EHEA_SPEED_100M;
- port->full_duplex = 1;
- break;
- case H_SPEED_1G_F:
- port->port_speed = EHEA_SPEED_1G;
- port->full_duplex = 1;
- break;
- case H_SPEED_10G_F:
- port->port_speed = EHEA_SPEED_10G;
- port->full_duplex = 1;
- break;
- default:
- port->port_speed = 0;
- port->full_duplex = 0;
- break;
- }
-
- port->autoneg = 1;
- port->num_mcs = cb0->num_default_qps;
-
- /* Number of default QPs */
- if (use_mcs)
- port->num_def_qps = cb0->num_default_qps;
- else
- port->num_def_qps = 1;
-
- if (!port->num_def_qps) {
- ret = -EINVAL;
- goto out_free;
- }
-
- port->num_tx_qps = num_tx_qps;
-
- if (port->num_def_qps >= port->num_tx_qps)
- port->num_add_tx_qps = 0;
- else
- port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
-
- ret = 0;
-out_free:
- if (ret || netif_msg_probe(port))
- ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
- free_page((unsigned long)cb0);
-out:
- return ret;
-}
-
-int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
-{
- struct hcp_ehea_port_cb4 *cb4;
- u64 hret;
- int ret = 0;
-
- cb4 = (void *)get_zeroed_page(GFP_KERNEL);
- if (!cb4) {
- pr_err("no mem for cb4\n");
- ret = -ENOMEM;
- goto out;
- }
-
- cb4->port_speed = port_speed;
-
- netif_carrier_off(port->netdev);
-
- hret = ehea_h_modify_ehea_port(port->adapter->handle,
- port->logical_port_id,
- H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
- if (hret == H_SUCCESS) {
- port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
-
- hret = ehea_h_query_ehea_port(port->adapter->handle,
- port->logical_port_id,
- H_PORT_CB4, H_PORT_CB4_SPEED,
- cb4);
- if (hret == H_SUCCESS) {
- switch (cb4->port_speed) {
- case H_SPEED_10M_H:
- port->port_speed = EHEA_SPEED_10M;
- port->full_duplex = 0;
- break;
- case H_SPEED_10M_F:
- port->port_speed = EHEA_SPEED_10M;
- port->full_duplex = 1;
- break;
- case H_SPEED_100M_H:
- port->port_speed = EHEA_SPEED_100M;
- port->full_duplex = 0;
- break;
- case H_SPEED_100M_F:
- port->port_speed = EHEA_SPEED_100M;
- port->full_duplex = 1;
- break;
- case H_SPEED_1G_F:
- port->port_speed = EHEA_SPEED_1G;
- port->full_duplex = 1;
- break;
- case H_SPEED_10G_F:
- port->port_speed = EHEA_SPEED_10G;
- port->full_duplex = 1;
- break;
- default:
- port->port_speed = 0;
- port->full_duplex = 0;
- break;
- }
- } else {
- pr_err("Failed sensing port speed\n");
- ret = -EIO;
- }
- } else {
- if (hret == H_AUTHORITY) {
- pr_info("Hypervisor denied setting port speed\n");
- ret = -EPERM;
- } else {
- ret = -EIO;
- pr_err("Failed setting port speed\n");
- }
- }
- if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
- netif_carrier_on(port->netdev);
-
- free_page((unsigned long)cb4);
-out:
- return ret;
-}
-
-static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
-{
- int ret;
- u8 ec;
- u8 portnum;
- struct ehea_port *port;
- struct net_device *dev;
-
- ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
- portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
- port = ehea_get_port(adapter, portnum);
- dev = port->netdev;
-
- switch (ec) {
- case EHEA_EC_PORTSTATE_CHG: /* port state change */
-
- if (!port) {
- netdev_err(dev, "unknown portnum %x\n", portnum);
- break;
- }
-
- if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
- if (!netif_carrier_ok(dev)) {
- ret = ehea_sense_port_attr(port);
- if (ret) {
- netdev_err(dev, "failed resensing port attributes\n");
- break;
- }
-
- netif_info(port, link, dev,
- "Logical port up: %dMbps %s Duplex\n",
- port->port_speed,
- port->full_duplex == 1 ?
- "Full" : "Half");
-
- netif_carrier_on(dev);
- netif_wake_queue(dev);
- }
- } else
- if (netif_carrier_ok(dev)) {
- netif_info(port, link, dev,
- "Logical port down\n");
- netif_carrier_off(dev);
- netif_stop_queue(dev);
- }
-
- if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
- port->phy_link = EHEA_PHY_LINK_UP;
- netif_info(port, link, dev,
- "Physical port up\n");
- if (prop_carrier_state)
- netif_carrier_on(dev);
- } else {
- port->phy_link = EHEA_PHY_LINK_DOWN;
- netif_info(port, link, dev,
- "Physical port down\n");
- if (prop_carrier_state)
- netif_carrier_off(dev);
- }
-
- if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
- netdev_info(dev,
- "External switch port is primary port\n");
- else
- netdev_info(dev,
- "External switch port is backup port\n");
-
- break;
- case EHEA_EC_ADAPTER_MALFUNC:
- netdev_err(dev, "Adapter malfunction\n");
- break;
- case EHEA_EC_PORT_MALFUNC:
- netdev_info(dev, "Port malfunction\n");
- netif_carrier_off(dev);
- netif_stop_queue(dev);
- break;
- default:
- netdev_err(dev, "unknown event code %x, eqe=0x%llX\n", ec, eqe);
- break;
- }
-}
-
-static void ehea_neq_tasklet(unsigned long data)
-{
- struct ehea_adapter *adapter = (struct ehea_adapter *)data;
- struct ehea_eqe *eqe;
- u64 event_mask;
-
- eqe = ehea_poll_eq(adapter->neq);
- pr_debug("eqe=%p\n", eqe);
-
- while (eqe) {
- pr_debug("*eqe=%lx\n", (unsigned long) eqe->entry);
- ehea_parse_eqe(adapter, eqe->entry);
- eqe = ehea_poll_eq(adapter->neq);
- pr_debug("next eqe=%p\n", eqe);
- }
-
- event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
- | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
- | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
-
- ehea_h_reset_events(adapter->handle,
- adapter->neq->fw_handle, event_mask);
-}
-
-static irqreturn_t ehea_interrupt_neq(int irq, void *param)
-{
- struct ehea_adapter *adapter = param;
- tasklet_hi_schedule(&adapter->neq_tasklet);
- return IRQ_HANDLED;
-}
-
-
-static int ehea_fill_port_res(struct ehea_port_res *pr)
-{
- int ret;
- struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
-
- ehea_init_fill_rq1(pr, pr->rq1_skba.len);
-
- ret = ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
-
- ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
-
- return ret;
-}
-
-static int ehea_reg_interrupts(struct net_device *dev)
-{
- struct ehea_port *port = netdev_priv(dev);
- struct ehea_port_res *pr;
- int i, ret;
-
-
- snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
- dev->name);
-
- ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
- ehea_qp_aff_irq_handler,
- IRQF_DISABLED, port->int_aff_name, port);
- if (ret) {
- netdev_err(dev, "failed registering irq for qp_aff_irq_handler:ist=%X\n",
- port->qp_eq->attr.ist1);
- goto out_free_qpeq;
- }
-
- netif_info(port, ifup, dev,
- "irq_handle 0x%X for function qp_aff_irq_handler registered\n",
- port->qp_eq->attr.ist1);
-
-
- for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
- pr = &port->port_res[i];
- snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
- "%s-queue%d", dev->name, i);
- ret = ibmebus_request_irq(pr->eq->attr.ist1,
- ehea_recv_irq_handler,
- IRQF_DISABLED, pr->int_send_name,
- pr);
- if (ret) {
- netdev_err(dev, "failed registering irq for ehea_queue port_res_nr:%d, ist=%X\n",
- i, pr->eq->attr.ist1);
- goto out_free_req;
- }
- netif_info(port, ifup, dev,
- "irq_handle 0x%X for function ehea_queue_int %d registered\n",
- pr->eq->attr.ist1, i);
- }
-out:
- return ret;
-
-
-out_free_req:
- while (--i >= 0) {
- u32 ist = port->port_res[i].eq->attr.ist1;
- ibmebus_free_irq(ist, &port->port_res[i]);
- }
-
-out_free_qpeq:
- ibmebus_free_irq(port->qp_eq->attr.ist1, port);
- i = port->num_def_qps;
-
- goto out;
-
-}
-
-static void ehea_free_interrupts(struct net_device *dev)
-{
- struct ehea_port *port = netdev_priv(dev);
- struct ehea_port_res *pr;
- int i;
-
- /* send */
-
- for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
- pr = &port->port_res[i];
- ibmebus_free_irq(pr->eq->attr.ist1, pr);
- netif_info(port, intr, dev,
- "free send irq for res %d with handle 0x%X\n",
- i, pr->eq->attr.ist1);
- }
-
- /* associated events */
- ibmebus_free_irq(port->qp_eq->attr.ist1, port);
- netif_info(port, intr, dev,
- "associated event interrupt for handle 0x%X freed\n",
- port->qp_eq->attr.ist1);
-}
-
-static int ehea_configure_port(struct ehea_port *port)
-{
- int ret, i;
- u64 hret, mask;
- struct hcp_ehea_port_cb0 *cb0;
-
- ret = -ENOMEM;
- cb0 = (void *)get_zeroed_page(GFP_KERNEL);
- if (!cb0)
- goto out;
-
- cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
- | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
- | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
- | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
- | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
- PXLY_RC_VLAN_FILTER)
- | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
-
- for (i = 0; i < port->num_mcs; i++)
- if (use_mcs)
- cb0->default_qpn_arr[i] =
- port->port_res[i].qp->init_attr.qp_nr;
- else
- cb0->default_qpn_arr[i] =
- port->port_res[0].qp->init_attr.qp_nr;
-
- if (netif_msg_ifup(port))
- ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
-
- mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
- | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
-
- hret = ehea_h_modify_ehea_port(port->adapter->handle,
- port->logical_port_id,
- H_PORT_CB0, mask, cb0);
- ret = -EIO;
- if (hret != H_SUCCESS)
- goto out_free;
-
- ret = 0;
-
-out_free:
- free_page((unsigned long)cb0);
-out:
- return ret;
-}
-
-int ehea_gen_smrs(struct ehea_port_res *pr)
-{
- int ret;
- struct ehea_adapter *adapter = pr->port->adapter;
-
- ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
- if (ret)
- goto out;
-
- ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
- if (ret)
- goto out_free;
-
- return 0;
-
-out_free:
- ehea_rem_mr(&pr->send_mr);
-out:
- pr_err("Generating SMRS failed\n");
- return -EIO;
-}
-
-int ehea_rem_smrs(struct ehea_port_res *pr)
-{
- if ((ehea_rem_mr(&pr->send_mr)) ||
- (ehea_rem_mr(&pr->recv_mr)))
- return -EIO;
- else
- return 0;
-}
-
-static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
-{
- int arr_size = sizeof(void *) * max_q_entries;
-
- q_skba->arr = vzalloc(arr_size);
- if (!q_skba->arr)
- return -ENOMEM;
-
- q_skba->len = max_q_entries;
- q_skba->index = 0;
- q_skba->os_skbs = 0;
-
- return 0;
-}
-
-static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
- struct port_res_cfg *pr_cfg, int queue_token)
-{
- struct ehea_adapter *adapter = port->adapter;
- enum ehea_eq_type eq_type = EHEA_EQ;
- struct ehea_qp_init_attr *init_attr = NULL;
- int ret = -EIO;
- u64 tx_bytes, rx_bytes, tx_packets, rx_packets;
-
- tx_bytes = pr->tx_bytes;
- tx_packets = pr->tx_packets;
- rx_bytes = pr->rx_bytes;
- rx_packets = pr->rx_packets;
-
- memset(pr, 0, sizeof(struct ehea_port_res));
-
- pr->tx_bytes = rx_bytes;
- pr->tx_packets = tx_packets;
- pr->rx_bytes = rx_bytes;
- pr->rx_packets = rx_packets;
-
- pr->port = port;
- spin_lock_init(&pr->xmit_lock);
- spin_lock_init(&pr->netif_queue);
-
- pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
- if (!pr->eq) {
- pr_err("create_eq failed (eq)\n");
- goto out_free;
- }
-
- pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
- pr->eq->fw_handle,
- port->logical_port_id);
- if (!pr->recv_cq) {
- pr_err("create_cq failed (cq_recv)\n");
- goto out_free;
- }
-
- pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
- pr->eq->fw_handle,
- port->logical_port_id);
- if (!pr->send_cq) {
- pr_err("create_cq failed (cq_send)\n");
- goto out_free;
- }
-
- if (netif_msg_ifup(port))
- pr_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d\n",
- pr->send_cq->attr.act_nr_of_cqes,
- pr->recv_cq->attr.act_nr_of_cqes);
-
- init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
- if (!init_attr) {
- ret = -ENOMEM;
- pr_err("no mem for ehea_qp_init_attr\n");
- goto out_free;
- }
-
- init_attr->low_lat_rq1 = 1;
- init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
- init_attr->rq_count = 3;
- init_attr->qp_token = queue_token;
- init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
- init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
- init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
- init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
- init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
- init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
- init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
- init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
- init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
- init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
- init_attr->port_nr = port->logical_port_id;
- init_attr->send_cq_handle = pr->send_cq->fw_handle;
- init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
- init_attr->aff_eq_handle = port->qp_eq->fw_handle;
-
- pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
- if (!pr->qp) {
- pr_err("create_qp failed\n");
- ret = -EIO;
- goto out_free;
- }
-
- if (netif_msg_ifup(port))
- pr_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d\n",
- init_attr->qp_nr,
- init_attr->act_nr_send_wqes,
- init_attr->act_nr_rwqes_rq1,
- init_attr->act_nr_rwqes_rq2,
- init_attr->act_nr_rwqes_rq3);
-
- pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
-
- ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
- ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
- ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
- ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
- if (ret)
- goto out_free;
-
- pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
- if (ehea_gen_smrs(pr) != 0) {
- ret = -EIO;
- goto out_free;
- }
-
- atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
-
- kfree(init_attr);
-
- netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
-
- pr->lro_mgr.max_aggr = pr->port->lro_max_aggr;
- pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
- pr->lro_mgr.lro_arr = pr->lro_desc;
- pr->lro_mgr.get_skb_header = get_skb_hdr;
- pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
- pr->lro_mgr.dev = port->netdev;
- pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
- pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
-
- ret = 0;
- goto out;
-
-out_free:
- kfree(init_attr);
- vfree(pr->sq_skba.arr);
- vfree(pr->rq1_skba.arr);
- vfree(pr->rq2_skba.arr);
- vfree(pr->rq3_skba.arr);
- ehea_destroy_qp(pr->qp);
- ehea_destroy_cq(pr->send_cq);
- ehea_destroy_cq(pr->recv_cq);
- ehea_destroy_eq(pr->eq);
-out:
- return ret;
-}
-
-static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
-{
- int ret, i;
-
- if (pr->qp)
- netif_napi_del(&pr->napi);
-
- ret = ehea_destroy_qp(pr->qp);
-
- if (!ret) {
- ehea_destroy_cq(pr->send_cq);
- ehea_destroy_cq(pr->recv_cq);
- ehea_destroy_eq(pr->eq);
-
- for (i = 0; i < pr->rq1_skba.len; i++)
- if (pr->rq1_skba.arr[i])
- dev_kfree_skb(pr->rq1_skba.arr[i]);
-
- for (i = 0; i < pr->rq2_skba.len; i++)
- if (pr->rq2_skba.arr[i])
- dev_kfree_skb(pr->rq2_skba.arr[i]);
-
- for (i = 0; i < pr->rq3_skba.len; i++)
- if (pr->rq3_skba.arr[i])
- dev_kfree_skb(pr->rq3_skba.arr[i]);
-
- for (i = 0; i < pr->sq_skba.len; i++)
- if (pr->sq_skba.arr[i])
- dev_kfree_skb(pr->sq_skba.arr[i]);
-
- vfree(pr->rq1_skba.arr);
- vfree(pr->rq2_skba.arr);
- vfree(pr->rq3_skba.arr);
- vfree(pr->sq_skba.arr);
- ret = ehea_rem_smrs(pr);
- }
- return ret;
-}
-
-/*
- * The write_* functions store information in swqe which is used by
- * the hardware to calculate the ip/tcp/udp checksum
- */
-
-static inline void write_ip_start_end(struct ehea_swqe *swqe,
- const struct sk_buff *skb)
-{
- swqe->ip_start = skb_network_offset(skb);
- swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
-}
-
-static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
- const struct sk_buff *skb)
-{
- swqe->tcp_offset =
- (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
-
- swqe->tcp_end = (u16)skb->len - 1;
-}
-
-static inline void write_udp_offset_end(struct ehea_swqe *swqe,
- const struct sk_buff *skb)
-{
- swqe->tcp_offset =
- (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
-
- swqe->tcp_end = (u16)skb->len - 1;
-}
-
-
-static void write_swqe2_TSO(struct sk_buff *skb,
- struct ehea_swqe *swqe, u32 lkey)
-{
- struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
- u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
- int skb_data_size = skb_headlen(skb);
- int headersize;
-
- /* Packet is TCP with TSO enabled */
- swqe->tx_control |= EHEA_SWQE_TSO;
- swqe->mss = skb_shinfo(skb)->gso_size;
- /* copy only eth/ip/tcp headers to immediate data and
- * the rest of skb->data to sg1entry
- */
- headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
-
- skb_data_size = skb_headlen(skb);
-
- if (skb_data_size >= headersize) {
- /* copy immediate data */
- skb_copy_from_linear_data(skb, imm_data, headersize);
- swqe->immediate_data_length = headersize;
-
- if (skb_data_size > headersize) {
- /* set sg1entry data */
- sg1entry->l_key = lkey;
- sg1entry->len = skb_data_size - headersize;
- sg1entry->vaddr =
- ehea_map_vaddr(skb->data + headersize);
- swqe->descriptors++;
- }
- } else
- pr_err("cannot handle fragmented headers\n");
-}
-
-static void write_swqe2_nonTSO(struct sk_buff *skb,
- struct ehea_swqe *swqe, u32 lkey)
-{
- int skb_data_size = skb_headlen(skb);
- u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
- struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
-
- /* Packet is any nonTSO type
- *
- * Copy as much as possible skb->data to immediate data and
- * the rest to sg1entry
- */
- if (skb_data_size >= SWQE2_MAX_IMM) {
- /* copy immediate data */
- skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
-
- swqe->immediate_data_length = SWQE2_MAX_IMM;
-
- if (skb_data_size > SWQE2_MAX_IMM) {
- /* copy sg1entry data */
- sg1entry->l_key = lkey;
- sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
- sg1entry->vaddr =
- ehea_map_vaddr(skb->data + SWQE2_MAX_IMM);
- swqe->descriptors++;
- }
- } else {
- skb_copy_from_linear_data(skb, imm_data, skb_data_size);
- swqe->immediate_data_length = skb_data_size;
- }
-}
-
-static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
- struct ehea_swqe *swqe, u32 lkey)
-{
- struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
- skb_frag_t *frag;
- int nfrags, sg1entry_contains_frag_data, i;
-
- nfrags = skb_shinfo(skb)->nr_frags;
- sg1entry = &swqe->u.immdata_desc.sg_entry;
- sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
- swqe->descriptors = 0;
- sg1entry_contains_frag_data = 0;
-
- if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
- write_swqe2_TSO(skb, swqe, lkey);
- else
- write_swqe2_nonTSO(skb, swqe, lkey);
-
- /* write descriptors */
- if (nfrags > 0) {
- if (swqe->descriptors == 0) {
- /* sg1entry not yet used */
- frag = &skb_shinfo(skb)->frags[0];
-
- /* copy sg1entry data */
- sg1entry->l_key = lkey;
- sg1entry->len = frag->size;
- sg1entry->vaddr =
- ehea_map_vaddr(page_address(frag->page)
- + frag->page_offset);
- swqe->descriptors++;
- sg1entry_contains_frag_data = 1;
- }
-
- for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
-
- frag = &skb_shinfo(skb)->frags[i];
- sgentry = &sg_list[i - sg1entry_contains_frag_data];
-
- sgentry->l_key = lkey;
- sgentry->len = frag->size;
- sgentry->vaddr =
- ehea_map_vaddr(page_address(frag->page)
- + frag->page_offset);
- swqe->descriptors++;
- }
- }
-}
-
-static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
-{
- int ret = 0;
- u64 hret;
- u8 reg_type;
-
- /* De/Register untagged packets */
- reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
- hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
- port->logical_port_id,
- reg_type, port->mac_addr, 0, hcallid);
- if (hret != H_SUCCESS) {
- pr_err("%sregistering bc address failed (tagged)\n",
- hcallid == H_REG_BCMC ? "" : "de");
- ret = -EIO;
- goto out_herr;
- }
-
- /* De/Register VLAN packets */
- reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
- hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
- port->logical_port_id,
- reg_type, port->mac_addr, 0, hcallid);
- if (hret != H_SUCCESS) {
- pr_err("%sregistering bc address failed (vlan)\n",
- hcallid == H_REG_BCMC ? "" : "de");
- ret = -EIO;
- }
-out_herr:
- return ret;
-}
-
-static int ehea_set_mac_addr(struct net_device *dev, void *sa)
-{
- struct ehea_port *port = netdev_priv(dev);
- struct sockaddr *mac_addr = sa;
- struct hcp_ehea_port_cb0 *cb0;
- int ret;
- u64 hret;
-
- if (!is_valid_ether_addr(mac_addr->sa_data)) {
- ret = -EADDRNOTAVAIL;
- goto out;
- }
-
- cb0 = (void *)get_zeroed_page(GFP_KERNEL);
- if (!cb0) {
- pr_err("no mem for cb0\n");
- ret = -ENOMEM;
- goto out;
- }
-
- memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
-
- cb0->port_mac_addr = cb0->port_mac_addr >> 16;
-
- hret = ehea_h_modify_ehea_port(port->adapter->handle,
- port->logical_port_id, H_PORT_CB0,
- EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
- if (hret != H_SUCCESS) {
- ret = -EIO;
- goto out_free;
- }
-
- memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
-
- /* Deregister old MAC in pHYP */
- if (port->state == EHEA_PORT_UP) {
- ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
- if (ret)
- goto out_upregs;
- }
-
- port->mac_addr = cb0->port_mac_addr << 16;
-
- /* Register new MAC in pHYP */
- if (port->state == EHEA_PORT_UP) {
- ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
- if (ret)
- goto out_upregs;
- }
-
- ret = 0;
-
-out_upregs:
- ehea_update_bcmc_registrations();
-out_free:
- free_page((unsigned long)cb0);
-out:
- return ret;
-}
-
-static void ehea_promiscuous_error(u64 hret, int enable)
-{
- if (hret == H_AUTHORITY)
- pr_info("Hypervisor denied %sabling promiscuous mode\n",
- enable == 1 ? "en" : "dis");
- else
- pr_err("failed %sabling promiscuous mode\n",
- enable == 1 ? "en" : "dis");
-}
-
-static void ehea_promiscuous(struct net_device *dev, int enable)
-{
- struct ehea_port *port = netdev_priv(dev);
- struct hcp_ehea_port_cb7 *cb7;
- u64 hret;
-
- if (enable == port->promisc)
- return;
-
- cb7 = (void *)get_zeroed_page(GFP_ATOMIC);
- if (!cb7) {
- pr_err("no mem for cb7\n");
- goto out;
- }
-
- /* Modify Pxs_DUCQPN in CB7 */
- cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
-
- hret = ehea_h_modify_ehea_port(port->adapter->handle,
- port->logical_port_id,
- H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
- if (hret) {
- ehea_promiscuous_error(hret, enable);
- goto out;
- }
-
- port->promisc = enable;
-out:
- free_page((unsigned long)cb7);
-}
-
-static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
- u32 hcallid)
-{
- u64 hret;
- u8 reg_type;
-
- reg_type = EHEA_BCMC_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) {
- pr_err("failed deregistering mcast MAC\n");
- ret = -EIO;
- }
-
- list_del(pos);
- kfree(mc_entry);
- }
- return ret;
-}
-
-static void ehea_allmulti(struct net_device *dev, int enable)
-{
- struct ehea_port *port = netdev_priv(dev);
- u64 hret;
-
- if (!port->allmulti) {
- if (enable) {
- /* Enable ALLMULTI */
- ehea_drop_multicast_list(dev);
- hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
- if (!hret)
- port->allmulti = 1;
- else
- netdev_err(dev,
- "failed enabling IFF_ALLMULTI\n");
- }
- } else
- if (!enable) {
- /* Disable ALLMULTI */
- hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
- if (!hret)
- port->allmulti = 0;
- else
- netdev_err(dev,
- "failed disabling IFF_ALLMULTI\n");
- }
-}
-
-static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
-{
- struct ehea_mc_list *ehea_mcl_entry;
- u64 hret;
-
- ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
- if (!ehea_mcl_entry) {
- pr_err("no mem for mcl_entry\n");
- return;
- }
-
- INIT_LIST_HEAD(&ehea_mcl_entry->list);
-
- memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
-
- hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
- H_REG_BCMC);
- if (!hret)
- list_add(&ehea_mcl_entry->list, &port->mc_list->list);
- else {
- pr_err("failed registering mcast MAC\n");
- kfree(ehea_mcl_entry);
- }
-}
-
-static void ehea_set_multicast_list(struct net_device *dev)
-{
- struct ehea_port *port = netdev_priv(dev);
- struct netdev_hw_addr *ha;
- int ret;
-
- if (port->promisc) {
- ehea_promiscuous(dev, 1);
- return;
- }
- ehea_promiscuous(dev, 0);
-
- if (dev->flags & IFF_ALLMULTI) {
- ehea_allmulti(dev, 1);
- goto out;
- }
- ehea_allmulti(dev, 0);
-
- if (!netdev_mc_empty(dev)) {
- ret = ehea_drop_multicast_list(dev);
- if (ret) {
- /* Dropping the current multicast list failed.
- * Enabling ALL_MULTI is the best we can do.
- */
- ehea_allmulti(dev, 1);
- }
-
- if (netdev_mc_count(dev) > port->adapter->max_mc_mac) {
- pr_info("Mcast registration limit reached (0x%llx). Use ALLMULTI!\n",
- port->adapter->max_mc_mac);
- goto out;
- }
-
- netdev_for_each_mc_addr(ha, dev)
- ehea_add_multicast_entry(port, ha->addr);
-
- }
-out:
- ehea_update_bcmc_registrations();
-}
-
-static int ehea_change_mtu(struct net_device *dev, int new_mtu)
-{
- if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
- return -EINVAL;
- dev->mtu = new_mtu;
- return 0;
-}
-
-static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
- struct ehea_swqe *swqe, u32 lkey)
-{
- if (skb->protocol == htons(ETH_P_IP)) {
- const struct iphdr *iph = ip_hdr(skb);
-
- /* IPv4 */
- swqe->tx_control |= EHEA_SWQE_CRC
- | EHEA_SWQE_IP_CHECKSUM
- | EHEA_SWQE_TCP_CHECKSUM
- | EHEA_SWQE_IMM_DATA_PRESENT
- | EHEA_SWQE_DESCRIPTORS_PRESENT;
-
- write_ip_start_end(swqe, skb);
-
- if (iph->protocol == IPPROTO_UDP) {
- if ((iph->frag_off & IP_MF) ||
- (iph->frag_off & IP_OFFSET))
- /* IP fragment, so don't change cs */
- swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
- else
- write_udp_offset_end(swqe, skb);
- } else if (iph->protocol == IPPROTO_TCP) {
- write_tcp_offset_end(swqe, skb);
- }
-
- /* icmp (big data) and ip segmentation packets (all other ip
- packets) do not require any special handling */
-
- } else {
- /* Other Ethernet Protocol */
- swqe->tx_control |= EHEA_SWQE_CRC
- | EHEA_SWQE_IMM_DATA_PRESENT
- | EHEA_SWQE_DESCRIPTORS_PRESENT;
- }
-
- write_swqe2_data(skb, dev, swqe, lkey);
-}
-
-static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
- struct ehea_swqe *swqe)
-{
- int nfrags = skb_shinfo(skb)->nr_frags;
- u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
- skb_frag_t *frag;
- int i;
-
- if (skb->protocol == htons(ETH_P_IP)) {
- const struct iphdr *iph = ip_hdr(skb);
-
- /* IPv4 */
- write_ip_start_end(swqe, skb);
-
- if (iph->protocol == IPPROTO_TCP) {
- swqe->tx_control |= EHEA_SWQE_CRC
- | EHEA_SWQE_IP_CHECKSUM
- | EHEA_SWQE_TCP_CHECKSUM
- | EHEA_SWQE_IMM_DATA_PRESENT;
-
- write_tcp_offset_end(swqe, skb);
-
- } else if (iph->protocol == IPPROTO_UDP) {
- if ((iph->frag_off & IP_MF) ||
- (iph->frag_off & IP_OFFSET))
- /* IP fragment, so don't change cs */
- swqe->tx_control |= EHEA_SWQE_CRC
- | EHEA_SWQE_IMM_DATA_PRESENT;
- else {
- swqe->tx_control |= EHEA_SWQE_CRC
- | EHEA_SWQE_IP_CHECKSUM
- | EHEA_SWQE_TCP_CHECKSUM
- | EHEA_SWQE_IMM_DATA_PRESENT;
-
- write_udp_offset_end(swqe, skb);
- }
- } else {
- /* icmp (big data) and
- ip segmentation packets (all other ip packets) */
- swqe->tx_control |= EHEA_SWQE_CRC
- | EHEA_SWQE_IP_CHECKSUM
- | EHEA_SWQE_IMM_DATA_PRESENT;
- }
- } else {
- /* Other Ethernet Protocol */
- swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
- }
- /* copy (immediate) data */
- if (nfrags == 0) {
- /* data is in a single piece */
- skb_copy_from_linear_data(skb, imm_data, skb->len);
- } else {
- /* first copy data from the skb->data buffer ... */
- skb_copy_from_linear_data(skb, imm_data,
- skb_headlen(skb));
- imm_data += skb_headlen(skb);
-
- /* ... then copy data from the fragments */
- for (i = 0; i < nfrags; i++) {
- frag = &skb_shinfo(skb)->frags[i];
- memcpy(imm_data,
- page_address(frag->page) + frag->page_offset,
- frag->size);
- imm_data += frag->size;
- }
- }
- swqe->immediate_data_length = skb->len;
- dev_kfree_skb(skb);
-}
-
-static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
-{
- struct tcphdr *tcp;
- u32 tmp;
-
- if ((skb->protocol == htons(ETH_P_IP)) &&
- (ip_hdr(skb)->protocol == IPPROTO_TCP)) {
- tcp = (struct tcphdr *)(skb_network_header(skb) +
- (ip_hdr(skb)->ihl * 4));
- tmp = (tcp->source + (tcp->dest << 16)) % 31;
- tmp += ip_hdr(skb)->daddr % 31;
- return tmp % num_qps;
- } else
- return 0;
-}
-
-static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
-{
- struct ehea_port *port = netdev_priv(dev);
- struct ehea_swqe *swqe;
- unsigned long flags;
- u32 lkey;
- int swqe_index;
- struct ehea_port_res *pr;
-
- pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
-
- if (!spin_trylock(&pr->xmit_lock))
- return NETDEV_TX_BUSY;
-
- if (pr->queue_stopped) {
- spin_unlock(&pr->xmit_lock);
- return NETDEV_TX_BUSY;
- }
-
- swqe = ehea_get_swqe(pr->qp, &swqe_index);
- memset(swqe, 0, SWQE_HEADER_SIZE);
- atomic_dec(&pr->swqe_avail);
-
- if (vlan_tx_tag_present(skb)) {
- swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
- swqe->vlan_tag = vlan_tx_tag_get(skb);
- }
-
- pr->tx_packets++;
- pr->tx_bytes += skb->len;
-
- if (skb->len <= SWQE3_MAX_IMM) {
- u32 sig_iv = port->sig_comp_iv;
- u32 swqe_num = pr->swqe_id_counter;
- ehea_xmit3(skb, dev, swqe);
- swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
- | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
- if (pr->swqe_ll_count >= (sig_iv - 1)) {
- swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
- sig_iv);
- swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
- pr->swqe_ll_count = 0;
- } else
- pr->swqe_ll_count += 1;
- } else {
- swqe->wr_id =
- EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
- | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
- | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
- | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
- pr->sq_skba.arr[pr->sq_skba.index] = skb;
-
- pr->sq_skba.index++;
- pr->sq_skba.index &= (pr->sq_skba.len - 1);
-
- lkey = pr->send_mr.lkey;
- ehea_xmit2(skb, dev, swqe, lkey);
- swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
- }
- pr->swqe_id_counter += 1;
-
- netif_info(port, tx_queued, dev,
- "post swqe on QP %d\n", pr->qp->init_attr.qp_nr);
- if (netif_msg_tx_queued(port))
- ehea_dump(swqe, 512, "swqe");
-
- if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
- netif_stop_queue(dev);
- swqe->tx_control |= EHEA_SWQE_PURGE;
- }
-
- ehea_post_swqe(pr->qp, swqe);
-
- if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
- spin_lock_irqsave(&pr->netif_queue, flags);
- if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
- pr->p_stats.queue_stopped++;
- netif_stop_queue(dev);
- pr->queue_stopped = 1;
- }
- spin_unlock_irqrestore(&pr->netif_queue, flags);
- }
- dev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */
- spin_unlock(&pr->xmit_lock);
-
- return NETDEV_TX_OK;
-}
-
-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 = (void *)get_zeroed_page(GFP_KERNEL);
- if (!cb1) {
- pr_err("no mem for cb1\n");
- goto out;
- }
-
- hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
- H_PORT_CB1, H_PORT_CB1_ALL, cb1);
- if (hret != H_SUCCESS) {
- pr_err("query_ehea_port failed\n");
- goto out;
- }
-
- index = (vid / 64);
- cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
-
- hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
- H_PORT_CB1, H_PORT_CB1_ALL, cb1);
- if (hret != H_SUCCESS)
- pr_err("modify_ehea_port failed\n");
-out:
- free_page((unsigned long)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;
-
- cb1 = (void *)get_zeroed_page(GFP_KERNEL);
- if (!cb1) {
- pr_err("no mem for cb1\n");
- goto out;
- }
-
- hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
- H_PORT_CB1, H_PORT_CB1_ALL, cb1);
- if (hret != H_SUCCESS) {
- pr_err("query_ehea_port failed\n");
- goto out;
- }
-
- index = (vid / 64);
- cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
-
- hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
- H_PORT_CB1, H_PORT_CB1_ALL, cb1);
- if (hret != H_SUCCESS)
- pr_err("modify_ehea_port failed\n");
-out:
- free_page((unsigned long)cb1);
-}
-
-int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
-{
- int ret = -EIO;
- u64 hret;
- u16 dummy16 = 0;
- u64 dummy64 = 0;
- struct hcp_modify_qp_cb0 *cb0;
-
- cb0 = (void *)get_zeroed_page(GFP_KERNEL);
- if (!cb0) {
- ret = -ENOMEM;
- goto out;
- }
-
- hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
- EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
- if (hret != H_SUCCESS) {
- pr_err("query_ehea_qp failed (1)\n");
- goto out;
- }
-
- cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
- hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
- EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
- &dummy64, &dummy64, &dummy16, &dummy16);
- if (hret != H_SUCCESS) {
- pr_err("modify_ehea_qp failed (1)\n");
- goto out;
- }
-
- hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
- EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
- if (hret != H_SUCCESS) {
- pr_err("query_ehea_qp failed (2)\n");
- goto out;
- }
-
- cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
- hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
- EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
- &dummy64, &dummy64, &dummy16, &dummy16);
- if (hret != H_SUCCESS) {
- pr_err("modify_ehea_qp failed (2)\n");
- goto out;
- }
-
- hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
- EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
- if (hret != H_SUCCESS) {
- pr_err("query_ehea_qp failed (3)\n");
- goto out;
- }
-
- cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
- hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
- EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
- &dummy64, &dummy64, &dummy16, &dummy16);
- if (hret != H_SUCCESS) {
- pr_err("modify_ehea_qp failed (3)\n");
- goto out;
- }
-
- hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
- EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
- if (hret != H_SUCCESS) {
- pr_err("query_ehea_qp failed (4)\n");
- goto out;
- }
-
- ret = 0;
-out:
- free_page((unsigned long)cb0);
- return ret;
-}
-
-static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
- int 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;
- pr_err("ehea_create_eq failed (qp_eq)\n");
- goto out_kill_eq;
- }
-
- pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
- pr_cfg.max_entries_scq = sq_entries * 2;
- pr_cfg.max_entries_sq = sq_entries;
- pr_cfg.max_entries_rq1 = rq1_entries;
- pr_cfg.max_entries_rq2 = rq2_entries;
- pr_cfg.max_entries_rq3 = rq3_entries;
-
- pr_cfg_small_rx.max_entries_rcq = 1;
- pr_cfg_small_rx.max_entries_scq = sq_entries;
- pr_cfg_small_rx.max_entries_sq = sq_entries;
- pr_cfg_small_rx.max_entries_rq1 = 1;
- pr_cfg_small_rx.max_entries_rq2 = 1;
- pr_cfg_small_rx.max_entries_rq3 = 1;
-
- for (i = 0; i < def_qps; i++) {
- ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
- if (ret)
- goto out_clean_pr;
- }
- for (i = def_qps; i < def_qps + add_tx_qps; i++) {
- ret = ehea_init_port_res(port, &port->port_res[i],
- &pr_cfg_small_rx, i);
- if (ret)
- goto out_clean_pr;
- }
-
- return 0;
-
-out_clean_pr:
- while (--i >= 0)
- ehea_clean_portres(port, &port->port_res[i]);
-
-out_kill_eq:
- ehea_destroy_eq(port->qp_eq);
- return ret;
-}
-
-static int ehea_clean_all_portres(struct ehea_port *port)
-{
- int ret = 0;
- int i;
-
- for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
- ret |= ehea_clean_portres(port, &port->port_res[i]);
-
- ret |= ehea_destroy_eq(port->qp_eq);
-
- return ret;
-}
-
-static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
-{
- if (adapter->active_ports)
- return;
-
- ehea_rem_mr(&adapter->mr);
-}
-
-static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
-{
- if (adapter->active_ports)
- return 0;
-
- return ehea_reg_kernel_mr(adapter, &adapter->mr);
-}
-
-static int ehea_up(struct net_device *dev)
-{
- int ret, i;
- struct ehea_port *port = netdev_priv(dev);
-
- if (port->state == EHEA_PORT_UP)
- return 0;
-
- ret = ehea_port_res_setup(port, port->num_def_qps,
- port->num_add_tx_qps);
- if (ret) {
- netdev_err(dev, "port_res_failed\n");
- goto out;
- }
-
- /* Set default QP for this port */
- ret = ehea_configure_port(port);
- if (ret) {
- netdev_err(dev, "ehea_configure_port failed. ret:%d\n", ret);
- goto out_clean_pr;
- }
-
- ret = ehea_reg_interrupts(dev);
- if (ret) {
- netdev_err(dev, "reg_interrupts failed. ret:%d\n", ret);
- goto out_clean_pr;
- }
-
- for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
- ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
- if (ret) {
- netdev_err(dev, "activate_qp failed\n");
- goto out_free_irqs;
- }
- }
-
- for (i = 0; i < port->num_def_qps; i++) {
- ret = ehea_fill_port_res(&port->port_res[i]);
- if (ret) {
- netdev_err(dev, "out_free_irqs\n");
- goto out_free_irqs;
- }
- }
-
- ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
- if (ret) {
- ret = -EIO;
- goto out_free_irqs;
- }
-
- port->state = EHEA_PORT_UP;
-
- ret = 0;
- goto out;
-
-out_free_irqs:
- ehea_free_interrupts(dev);
-
-out_clean_pr:
- ehea_clean_all_portres(port);
-out:
- if (ret)
- netdev_info(dev, "Failed starting. ret=%i\n", ret);
-
- ehea_update_bcmc_registrations();
- ehea_update_firmware_handles();
-
- return ret;
-}
-
-static void port_napi_disable(struct ehea_port *port)
-{
- int i;
-
- for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
- napi_disable(&port->port_res[i].napi);
-}
-
-static void port_napi_enable(struct ehea_port *port)
-{
- int i;
-
- for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
- napi_enable(&port->port_res[i].napi);
-}
-
-static int ehea_open(struct net_device *dev)
-{
- int ret;
- struct ehea_port *port = netdev_priv(dev);
-
- mutex_lock(&port->port_lock);
-
- netif_info(port, ifup, dev, "enabling port\n");
-
- ret = ehea_up(dev);
- if (!ret) {
- port_napi_enable(port);
- netif_start_queue(dev);
- }
-
- mutex_unlock(&port->port_lock);
-
- return ret;
-}
-
-static int ehea_down(struct net_device *dev)
-{
- int ret;
- struct ehea_port *port = netdev_priv(dev);
-
- if (port->state == EHEA_PORT_DOWN)
- return 0;
-
- ehea_drop_multicast_list(dev);
- ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
-
- ehea_free_interrupts(dev);
-
- port->state = EHEA_PORT_DOWN;
-
- ehea_update_bcmc_registrations();
-
- ret = ehea_clean_all_portres(port);
- if (ret)
- netdev_info(dev, "Failed freeing resources. ret=%i\n", ret);
-
- ehea_update_firmware_handles();
-
- return ret;
-}
-
-static int ehea_stop(struct net_device *dev)
-{
- int ret;
- struct ehea_port *port = netdev_priv(dev);
-
- netif_info(port, ifdown, dev, "disabling port\n");
-
- set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
- cancel_work_sync(&port->reset_task);
- mutex_lock(&port->port_lock);
- netif_stop_queue(dev);
- port_napi_disable(port);
- ret = ehea_down(dev);
- mutex_unlock(&port->port_lock);
- clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
- return ret;
-}
-
-static void ehea_purge_sq(struct ehea_qp *orig_qp)
-{
- struct ehea_qp qp = *orig_qp;
- struct ehea_qp_init_attr *init_attr = &qp.init_attr;
- struct ehea_swqe *swqe;
- int wqe_index;
- int i;
-
- for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
- swqe = ehea_get_swqe(&qp, &wqe_index);
- swqe->tx_control |= EHEA_SWQE_PURGE;
- }
-}
-
-static void ehea_flush_sq(struct ehea_port *port)
-{
- int i;
-
- for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
- struct ehea_port_res *pr = &port->port_res[i];
- int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
- int ret;
-
- ret = wait_event_timeout(port->swqe_avail_wq,
- atomic_read(&pr->swqe_avail) >= swqe_max,
- msecs_to_jiffies(100));
-
- if (!ret) {
- pr_err("WARNING: sq not flushed completely\n");
- break;
- }
- }
-}
-
-int ehea_stop_qps(struct net_device *dev)
-{
- struct ehea_port *port = netdev_priv(dev);
- struct ehea_adapter *adapter = port->adapter;
- struct hcp_modify_qp_cb0 *cb0;
- int ret = -EIO;
- int dret;
- int i;
- u64 hret;
- u64 dummy64 = 0;
- u16 dummy16 = 0;
-
- cb0 = (void *)get_zeroed_page(GFP_KERNEL);
- if (!cb0) {
- ret = -ENOMEM;
- goto out;
- }
-
- for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
- struct ehea_port_res *pr = &port->port_res[i];
- struct ehea_qp *qp = pr->qp;
-
- /* Purge send queue */
- ehea_purge_sq(qp);
-
- /* Disable queue pair */
- hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
- EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
- cb0);
- if (hret != H_SUCCESS) {
- pr_err("query_ehea_qp failed (1)\n");
- goto out;
- }
-
- cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
- cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
-
- hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
- EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
- 1), cb0, &dummy64,
- &dummy64, &dummy16, &dummy16);
- if (hret != H_SUCCESS) {
- pr_err("modify_ehea_qp failed (1)\n");
- goto out;
- }
-
- hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
- EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
- cb0);
- if (hret != H_SUCCESS) {
- pr_err("query_ehea_qp failed (2)\n");
- goto out;
- }
-
- /* deregister shared memory regions */
- dret = ehea_rem_smrs(pr);
- if (dret) {
- pr_err("unreg shared memory region failed\n");
- goto out;
- }
- }
-
- ret = 0;
-out:
- free_page((unsigned long)cb0);
-
- return ret;
-}
-
-void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
-{
- struct ehea_qp qp = *orig_qp;
- struct ehea_qp_init_attr *init_attr = &qp.init_attr;
- struct ehea_rwqe *rwqe;
- struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
- struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
- struct sk_buff *skb;
- u32 lkey = pr->recv_mr.lkey;
-
-
- int i;
- int index;
-
- for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
- rwqe = ehea_get_next_rwqe(&qp, 2);
- rwqe->sg_list[0].l_key = lkey;
- index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
- skb = skba_rq2[index];
- if (skb)
- rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
- }
-
- for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
- rwqe = ehea_get_next_rwqe(&qp, 3);
- rwqe->sg_list[0].l_key = lkey;
- index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
- skb = skba_rq3[index];
- if (skb)
- rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
- }
-}
-
-int ehea_restart_qps(struct net_device *dev)
-{
- struct ehea_port *port = netdev_priv(dev);
- struct ehea_adapter *adapter = port->adapter;
- int ret = 0;
- int i;
-
- struct hcp_modify_qp_cb0 *cb0;
- u64 hret;
- u64 dummy64 = 0;
- u16 dummy16 = 0;
-
- cb0 = (void *)get_zeroed_page(GFP_KERNEL);
- if (!cb0) {
- ret = -ENOMEM;
- goto out;
- }
-
- for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
- struct ehea_port_res *pr = &port->port_res[i];
- struct ehea_qp *qp = pr->qp;
-
- ret = ehea_gen_smrs(pr);
- if (ret) {
- netdev_err(dev, "creation of shared memory regions failed\n");
- goto out;
- }
-
- ehea_update_rqs(qp, pr);
-
- /* Enable queue pair */
- hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
- EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
- cb0);
- if (hret != H_SUCCESS) {
- netdev_err(dev, "query_ehea_qp failed (1)\n");
- goto out;
- }
-
- cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
- cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
-
- hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
- EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
- 1), cb0, &dummy64,
- &dummy64, &dummy16, &dummy16);
- if (hret != H_SUCCESS) {
- netdev_err(dev, "modify_ehea_qp failed (1)\n");
- goto out;
- }
-
- hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
- EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
- cb0);
- if (hret != H_SUCCESS) {
- netdev_err(dev, "query_ehea_qp failed (2)\n");
- goto out;
- }
-
- /* refill entire queue */
- ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
- ehea_refill_rq2(pr, 0);
- ehea_refill_rq3(pr, 0);
- }
-out:
- free_page((unsigned long)cb0);
-
- return ret;
-}
-
-static void ehea_reset_port(struct work_struct *work)
-{
- int ret;
- struct ehea_port *port =
- container_of(work, struct ehea_port, reset_task);
- struct net_device *dev = port->netdev;
-
- mutex_lock(&dlpar_mem_lock);
- port->resets++;
- mutex_lock(&port->port_lock);
- netif_stop_queue(dev);
-
- port_napi_disable(port);
-
- ehea_down(dev);
-
- ret = ehea_up(dev);
- if (ret)
- goto out;
-
- ehea_set_multicast_list(dev);
-
- netif_info(port, timer, dev, "reset successful\n");
-
- port_napi_enable(port);
-
- netif_wake_queue(dev);
-out:
- mutex_unlock(&port->port_lock);
- mutex_unlock(&dlpar_mem_lock);
-}
-
-static void ehea_rereg_mrs(void)
-{
- int ret, i;
- struct ehea_adapter *adapter;
-
- pr_info("LPAR memory changed - re-initializing driver\n");
-
- list_for_each_entry(adapter, &adapter_list, list)
- if (adapter->active_ports) {
- /* Shutdown all ports */
- for (i = 0; i < EHEA_MAX_PORTS; i++) {
- struct ehea_port *port = adapter->port[i];
- struct net_device *dev;
-
- if (!port)
- continue;
-
- dev = port->netdev;
-
- if (dev->flags & IFF_UP) {
- mutex_lock(&port->port_lock);
- netif_stop_queue(dev);
- ehea_flush_sq(port);
- ret = ehea_stop_qps(dev);
- if (ret) {
- mutex_unlock(&port->port_lock);
- goto out;
- }
- port_napi_disable(port);
- mutex_unlock(&port->port_lock);
- }
- reset_sq_restart_flag(port);
- }
-
- /* Unregister old memory region */
- ret = ehea_rem_mr(&adapter->mr);
- if (ret) {
- pr_err("unregister MR failed - driver inoperable!\n");
- goto out;
- }
- }
-
- clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
-
- list_for_each_entry(adapter, &adapter_list, list)
- if (adapter->active_ports) {
- /* Register new memory region */
- ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
- if (ret) {
- pr_err("register MR failed - driver inoperable!\n");
- goto out;
- }
-
- /* Restart all ports */
- for (i = 0; i < EHEA_MAX_PORTS; i++) {
- struct ehea_port *port = adapter->port[i];
-
- if (port) {
- struct net_device *dev = port->netdev;
-
- if (dev->flags & IFF_UP) {
- mutex_lock(&port->port_lock);
- ret = ehea_restart_qps(dev);
- if (!ret) {
- check_sqs(port);
- port_napi_enable(port);
- netif_wake_queue(dev);
- } else {
- netdev_err(dev, "Unable to restart QPS\n");
- }
- mutex_unlock(&port->port_lock);
- }
- }
- }
- }
- pr_info("re-initializing driver complete\n");
-out:
- return;
-}
-
-static void ehea_tx_watchdog(struct net_device *dev)
-{
- struct ehea_port *port = netdev_priv(dev);
-
- if (netif_carrier_ok(dev) &&
- !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
- ehea_schedule_port_reset(port);
-}
-
-int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
-{
- struct hcp_query_ehea *cb;
- u64 hret;
- int ret;
-
- cb = (void *)get_zeroed_page(GFP_KERNEL);
- if (!cb) {
- ret = -ENOMEM;
- goto out;
- }
-
- hret = ehea_h_query_ehea(adapter->handle, cb);
-
- if (hret != H_SUCCESS) {
- ret = -EIO;
- goto out_herr;
- }
-
- adapter->max_mc_mac = cb->max_mc_mac - 1;
- ret = 0;
-
-out_herr:
- free_page((unsigned long)cb);
-out:
- return ret;
-}
-
-int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
-{
- struct hcp_ehea_port_cb4 *cb4;
- u64 hret;
- int ret = 0;
-
- *jumbo = 0;
-
- /* (Try to) enable *jumbo frames */
- cb4 = (void *)get_zeroed_page(GFP_KERNEL);
- if (!cb4) {
- pr_err("no mem for cb4\n");
- ret = -ENOMEM;
- goto out;
- } else {
- hret = ehea_h_query_ehea_port(port->adapter->handle,
- port->logical_port_id,
- H_PORT_CB4,
- H_PORT_CB4_JUMBO, cb4);
- if (hret == H_SUCCESS) {
- if (cb4->jumbo_frame)
- *jumbo = 1;
- else {
- cb4->jumbo_frame = 1;
- hret = ehea_h_modify_ehea_port(port->adapter->
- handle,
- port->
- logical_port_id,
- H_PORT_CB4,
- H_PORT_CB4_JUMBO,
- cb4);
- if (hret == H_SUCCESS)
- *jumbo = 1;
- }
- } else
- ret = -EINVAL;
-
- free_page((unsigned long)cb4);
- }
-out:
- return ret;
-}
-
-static ssize_t ehea_show_port_id(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
- return sprintf(buf, "%d", port->logical_port_id);
-}
-
-static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
- NULL);
-
-static void __devinit logical_port_release(struct device *dev)
-{
- struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
- of_node_put(port->ofdev.dev.of_node);
-}
-
-static struct device *ehea_register_port(struct ehea_port *port,
- struct device_node *dn)
-{
- int ret;
-
- port->ofdev.dev.of_node = of_node_get(dn);
- port->ofdev.dev.parent = &port->adapter->ofdev->dev;
- port->ofdev.dev.bus = &ibmebus_bus_type;
-
- dev_set_name(&port->ofdev.dev, "port%d", port_name_cnt++);
- port->ofdev.dev.release = logical_port_release;
-
- ret = of_device_register(&port->ofdev);
- if (ret) {
- pr_err("failed to register device. ret=%d\n", ret);
- goto out;
- }
-
- ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
- if (ret) {
- pr_err("failed to register attributes, ret=%d\n", ret);
- goto out_unreg_of_dev;
- }
-
- return &port->ofdev.dev;
-
-out_unreg_of_dev:
- of_device_unregister(&port->ofdev);
-out:
- return NULL;
-}
-
-static void ehea_unregister_port(struct ehea_port *port)
-{
- device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
- of_device_unregister(&port->ofdev);
-}
-
-static const struct net_device_ops ehea_netdev_ops = {
- .ndo_open = ehea_open,
- .ndo_stop = ehea_stop,
- .ndo_start_xmit = ehea_start_xmit,
-#ifdef CONFIG_NET_POLL_CONTROLLER
- .ndo_poll_controller = ehea_netpoll,
-#endif
- .ndo_get_stats = ehea_get_stats,
- .ndo_set_mac_address = ehea_set_mac_addr,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_set_multicast_list = ehea_set_multicast_list,
- .ndo_change_mtu = ehea_change_mtu,
- .ndo_vlan_rx_add_vid = ehea_vlan_rx_add_vid,
- .ndo_vlan_rx_kill_vid = ehea_vlan_rx_kill_vid,
- .ndo_tx_timeout = ehea_tx_watchdog,
-};
-
-struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
- u32 logical_port_id,
- struct device_node *dn)
-{
- int ret;
- struct net_device *dev;
- struct ehea_port *port;
- struct device *port_dev;
- int jumbo;
-
- /* allocate memory for the port structures */
- dev = alloc_etherdev(sizeof(struct ehea_port));
-
- if (!dev) {
- pr_err("no mem for net_device\n");
- ret = -ENOMEM;
- goto out_err;
- }
-
- port = netdev_priv(dev);
-
- mutex_init(&port->port_lock);
- port->state = EHEA_PORT_DOWN;
- port->sig_comp_iv = sq_entries / 10;
-
- port->adapter = adapter;
- port->netdev = dev;
- port->logical_port_id = logical_port_id;
-
- port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
-
- port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
- if (!port->mc_list) {
- ret = -ENOMEM;
- goto out_free_ethdev;
- }
-
- INIT_LIST_HEAD(&port->mc_list->list);
-
- ret = ehea_sense_port_attr(port);
- if (ret)
- goto out_free_mc_list;
-
- port_dev = ehea_register_port(port, dn);
- if (!port_dev)
- goto out_free_mc_list;
-
- SET_NETDEV_DEV(dev, port_dev);
-
- /* initialize net_device structure */
- memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
-
- dev->netdev_ops = &ehea_netdev_ops;
- ehea_set_ethtool_ops(dev);
-
- dev->hw_features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
- | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX | NETIF_F_LRO;
- dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
- | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX
- | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
- | NETIF_F_LLTX | NETIF_F_RXCSUM;
- dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
-
- if (use_lro)
- dev->features |= NETIF_F_LRO;
-
- INIT_WORK(&port->reset_task, ehea_reset_port);
-
- init_waitqueue_head(&port->swqe_avail_wq);
- init_waitqueue_head(&port->restart_wq);
-
- ret = register_netdev(dev);
- if (ret) {
- pr_err("register_netdev failed. ret=%d\n", ret);
- goto out_unreg_port;
- }
-
- port->lro_max_aggr = lro_max_aggr;
-
- ret = ehea_get_jumboframe_status(port, &jumbo);
- if (ret)
- netdev_err(dev, "failed determining jumbo frame status\n");
-
- netdev_info(dev, "Jumbo frames are %sabled\n",
- jumbo == 1 ? "en" : "dis");
-
- adapter->active_ports++;
-
- return port;
-
-out_unreg_port:
- ehea_unregister_port(port);
-
-out_free_mc_list:
- kfree(port->mc_list);
-
-out_free_ethdev:
- free_netdev(dev);
-
-out_err:
- pr_err("setting up logical port with id=%d failed, ret=%d\n",
- logical_port_id, ret);
- return NULL;
-}
-
-static void ehea_shutdown_single_port(struct ehea_port *port)
-{
- struct ehea_adapter *adapter = port->adapter;
-
- cancel_work_sync(&port->reset_task);
- unregister_netdev(port->netdev);
- ehea_unregister_port(port);
- kfree(port->mc_list);
- free_netdev(port->netdev);
- adapter->active_ports--;
-}
-
-static int ehea_setup_ports(struct ehea_adapter *adapter)
-{
- struct device_node *lhea_dn;
- struct device_node *eth_dn = NULL;
-
- const u32 *dn_log_port_id;
- int i = 0;
-
- lhea_dn = adapter->ofdev->dev.of_node;
- while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
-
- dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
- NULL);
- if (!dn_log_port_id) {
- pr_err("bad device node: eth_dn name=%s\n",
- eth_dn->full_name);
- continue;
- }
-
- if (ehea_add_adapter_mr(adapter)) {
- pr_err("creating MR failed\n");
- of_node_put(eth_dn);
- return -EIO;
- }
-
- adapter->port[i] = ehea_setup_single_port(adapter,
- *dn_log_port_id,
- eth_dn);
- if (adapter->port[i])
- netdev_info(adapter->port[i]->netdev,
- "logical port id #%d\n", *dn_log_port_id);
- else
- ehea_remove_adapter_mr(adapter);
-
- i++;
- }
- return 0;
-}
-
-static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
- u32 logical_port_id)
-{
- struct device_node *lhea_dn;
- struct device_node *eth_dn = NULL;
- const u32 *dn_log_port_id;
-
- lhea_dn = adapter->ofdev->dev.of_node;
- while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
-
- dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
- NULL);
- if (dn_log_port_id)
- if (*dn_log_port_id == logical_port_id)
- return eth_dn;
- }
-
- return NULL;
-}
-
-static ssize_t ehea_probe_port(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct ehea_adapter *adapter = dev_get_drvdata(dev);
- struct ehea_port *port;
- struct device_node *eth_dn = NULL;
- int i;
-
- u32 logical_port_id;
-
- sscanf(buf, "%d", &logical_port_id);
-
- port = ehea_get_port(adapter, logical_port_id);
-
- if (port) {
- netdev_info(port->netdev, "adding port with logical port id=%d failed: port already configured\n",
- logical_port_id);
- return -EINVAL;
- }
-
- eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
-
- if (!eth_dn) {
- pr_info("no logical port with id %d found\n", logical_port_id);
- return -EINVAL;
- }
-
- if (ehea_add_adapter_mr(adapter)) {
- pr_err("creating MR failed\n");
- return -EIO;
- }
-
- port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
-
- of_node_put(eth_dn);
-
- if (port) {
- for (i = 0; i < EHEA_MAX_PORTS; i++)
- if (!adapter->port[i]) {
- adapter->port[i] = port;
- break;
- }
-
- netdev_info(port->netdev, "added: (logical port id=%d)\n",
- logical_port_id);
- } else {
- ehea_remove_adapter_mr(adapter);
- return -EIO;
- }
-
- return (ssize_t) count;
-}
-
-static ssize_t ehea_remove_port(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct ehea_adapter *adapter = dev_get_drvdata(dev);
- struct ehea_port *port;
- int i;
- u32 logical_port_id;
-
- sscanf(buf, "%d", &logical_port_id);
-
- port = ehea_get_port(adapter, logical_port_id);
-
- if (port) {
- netdev_info(port->netdev, "removed: (logical port id=%d)\n",
- logical_port_id);
-
- ehea_shutdown_single_port(port);
-
- for (i = 0; i < EHEA_MAX_PORTS; i++)
- if (adapter->port[i] == port) {
- adapter->port[i] = NULL;
- break;
- }
- } else {
- pr_err("removing port with logical port id=%d failed. port not configured.\n",
- logical_port_id);
- return -EINVAL;
- }
-
- ehea_remove_adapter_mr(adapter);
-
- return (ssize_t) count;
-}
-
-static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
-static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
-
-int ehea_create_device_sysfs(struct platform_device *dev)
-{
- int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
- if (ret)
- goto out;
-
- ret = device_create_file(&dev->dev, &dev_attr_remove_port);
-out:
- return ret;
-}
-
-void ehea_remove_device_sysfs(struct platform_device *dev)
-{
- device_remove_file(&dev->dev, &dev_attr_probe_port);
- device_remove_file(&dev->dev, &dev_attr_remove_port);
-}
-
-static int __devinit ehea_probe_adapter(struct platform_device *dev,
- const struct of_device_id *id)
-{
- struct ehea_adapter *adapter;
- const u64 *adapter_handle;
- int ret;
-
- if (!dev || !dev->dev.of_node) {
- pr_err("Invalid ibmebus device probed\n");
- return -EINVAL;
- }
-
- adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
- if (!adapter) {
- ret = -ENOMEM;
- dev_err(&dev->dev, "no mem for ehea_adapter\n");
- goto out;
- }
-
- list_add(&adapter->list, &adapter_list);
-
- adapter->ofdev = dev;
-
- adapter_handle = of_get_property(dev->dev.of_node, "ibm,hea-handle",
- NULL);
- if (adapter_handle)
- adapter->handle = *adapter_handle;
-
- if (!adapter->handle) {
- dev_err(&dev->dev, "failed getting handle for adapter"
- " '%s'\n", dev->dev.of_node->full_name);
- ret = -ENODEV;
- goto out_free_ad;
- }
-
- adapter->pd = EHEA_PD_ID;
-
- dev_set_drvdata(&dev->dev, adapter);
-
-
- /* initialize adapter and ports */
- /* get adapter properties */
- ret = ehea_sense_adapter_attr(adapter);
- if (ret) {
- dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
- goto out_free_ad;
- }
-
- adapter->neq = ehea_create_eq(adapter,
- EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
- if (!adapter->neq) {
- ret = -EIO;
- dev_err(&dev->dev, "NEQ creation failed\n");
- goto out_free_ad;
- }
-
- tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
- (unsigned long)adapter);
-
- ret = ibmebus_request_irq(adapter->neq->attr.ist1,
- ehea_interrupt_neq, IRQF_DISABLED,
- "ehea_neq", adapter);
- if (ret) {
- dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
- goto out_kill_eq;
- }
-
- ret = ehea_create_device_sysfs(dev);
- if (ret)
- goto out_free_irq;
-
- ret = ehea_setup_ports(adapter);
- if (ret) {
- dev_err(&dev->dev, "setup_ports failed\n");
- goto out_rem_dev_sysfs;
- }
-
- ret = 0;
- goto out;
-
-out_rem_dev_sysfs:
- ehea_remove_device_sysfs(dev);
-
-out_free_irq:
- ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
-
-out_kill_eq:
- ehea_destroy_eq(adapter->neq);
-
-out_free_ad:
- list_del(&adapter->list);
- kfree(adapter);
-
-out:
- ehea_update_firmware_handles();
-
- return ret;
-}
-
-static int __devexit ehea_remove(struct platform_device *dev)
-{
- struct ehea_adapter *adapter = dev_get_drvdata(&dev->dev);
- int i;
-
- for (i = 0; i < EHEA_MAX_PORTS; i++)
- if (adapter->port[i]) {
- ehea_shutdown_single_port(adapter->port[i]);
- adapter->port[i] = NULL;
- }
-
- ehea_remove_device_sysfs(dev);
-
- ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
- tasklet_kill(&adapter->neq_tasklet);
-
- ehea_destroy_eq(adapter->neq);
- ehea_remove_adapter_mr(adapter);
- list_del(&adapter->list);
- kfree(adapter);
-
- ehea_update_firmware_handles();
-
- return 0;
-}
-
-void ehea_crash_handler(void)
-{
- int i;
-
- if (ehea_fw_handles.arr)
- for (i = 0; i < ehea_fw_handles.num_entries; i++)
- ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
- ehea_fw_handles.arr[i].fwh,
- FORCE_FREE);
-
- if (ehea_bcmc_regs.arr)
- for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
- ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
- ehea_bcmc_regs.arr[i].port_id,
- ehea_bcmc_regs.arr[i].reg_type,
- ehea_bcmc_regs.arr[i].macaddr,
- 0, H_DEREG_BCMC);
-}
-
-static int ehea_mem_notifier(struct notifier_block *nb,
- unsigned long action, void *data)
-{
- int ret = NOTIFY_BAD;
- struct memory_notify *arg = data;
-
- mutex_lock(&dlpar_mem_lock);
-
- switch (action) {
- case MEM_CANCEL_OFFLINE:
- pr_info("memory offlining canceled");
- /* Readd canceled memory block */
- case MEM_ONLINE:
- pr_info("memory is going online");
- set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
- if (ehea_add_sect_bmap(arg->start_pfn, arg->nr_pages))
- goto out_unlock;
- ehea_rereg_mrs();
- break;
- case MEM_GOING_OFFLINE:
- pr_info("memory is going offline");
- set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
- if (ehea_rem_sect_bmap(arg->start_pfn, arg->nr_pages))
- goto out_unlock;
- ehea_rereg_mrs();
- break;
- default:
- break;
- }
-
- ehea_update_firmware_handles();
- ret = NOTIFY_OK;
-
-out_unlock:
- mutex_unlock(&dlpar_mem_lock);
- return ret;
-}
-
-static struct notifier_block ehea_mem_nb = {
- .notifier_call = ehea_mem_notifier,
-};
-
-static int ehea_reboot_notifier(struct notifier_block *nb,
- unsigned long action, void *unused)
-{
- if (action == SYS_RESTART) {
- pr_info("Reboot: freeing all eHEA resources\n");
- ibmebus_unregister_driver(&ehea_driver);
- }
- return NOTIFY_DONE;
-}
-
-static struct notifier_block ehea_reboot_nb = {
- .notifier_call = ehea_reboot_notifier,
-};
-
-static int check_module_parm(void)
-{
- int ret = 0;
-
- if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
- (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
- pr_info("Bad parameter: rq1_entries\n");
- ret = -EINVAL;
- }
- if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
- (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
- pr_info("Bad parameter: rq2_entries\n");
- ret = -EINVAL;
- }
- if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
- (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
- pr_info("Bad parameter: rq3_entries\n");
- ret = -EINVAL;
- }
- if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
- (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
- pr_info("Bad parameter: sq_entries\n");
- ret = -EINVAL;
- }
-
- return ret;
-}
-
-static ssize_t ehea_show_capabilities(struct device_driver *drv,
- char *buf)
-{
- return sprintf(buf, "%d", EHEA_CAPABILITIES);
-}
-
-static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
- ehea_show_capabilities, NULL);
-
-int __init ehea_module_init(void)
-{
- int ret;
-
- pr_info("IBM eHEA ethernet device driver (Release %s)\n", DRV_VERSION);
-
- memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
- memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
-
- mutex_init(&ehea_fw_handles.lock);
- spin_lock_init(&ehea_bcmc_regs.lock);
-
- ret = check_module_parm();
- if (ret)
- goto out;
-
- ret = ehea_create_busmap();
- if (ret)
- goto out;
-
- ret = register_reboot_notifier(&ehea_reboot_nb);
- if (ret)
- pr_info("failed registering reboot notifier\n");
-
- ret = register_memory_notifier(&ehea_mem_nb);
- if (ret)
- pr_info("failed registering memory remove notifier\n");
-
- ret = crash_shutdown_register(ehea_crash_handler);
- if (ret)
- pr_info("failed registering crash handler\n");
-
- ret = ibmebus_register_driver(&ehea_driver);
- if (ret) {
- pr_err("failed registering eHEA device driver on ebus\n");
- goto out2;
- }
-
- ret = driver_create_file(&ehea_driver.driver,
- &driver_attr_capabilities);
- if (ret) {
- pr_err("failed to register capabilities attribute, ret=%d\n",
- ret);
- goto out3;
- }
-
- return ret;
-
-out3:
- ibmebus_unregister_driver(&ehea_driver);
-out2:
- unregister_memory_notifier(&ehea_mem_nb);
- unregister_reboot_notifier(&ehea_reboot_nb);
- crash_shutdown_unregister(ehea_crash_handler);
-out:
- return ret;
-}
-
-static void __exit ehea_module_exit(void)
-{
- int ret;
-
- driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
- ibmebus_unregister_driver(&ehea_driver);
- unregister_reboot_notifier(&ehea_reboot_nb);
- ret = crash_shutdown_unregister(ehea_crash_handler);
- if (ret)
- pr_info("failed unregistering crash handler\n");
- unregister_memory_notifier(&ehea_mem_nb);
- kfree(ehea_fw_handles.arr);
- kfree(ehea_bcmc_regs.arr);
- ehea_destroy_busmap();
-}
-
-module_init(ehea_module_init);
-module_exit(ehea_module_exit);