diff options
Diffstat (limited to 'drivers/net/ehea')
| -rw-r--r-- | drivers/net/ehea/Makefile | 6 | ||||
| -rw-r--r-- | drivers/net/ehea/ehea.h | 447 | ||||
| -rw-r--r-- | drivers/net/ehea/ehea_ethtool.c | 294 | ||||
| -rw-r--r-- | drivers/net/ehea/ehea_hcall.h | 51 | ||||
| -rw-r--r-- | drivers/net/ehea/ehea_hw.h | 292 | ||||
| -rw-r--r-- | drivers/net/ehea/ehea_main.c | 2654 | ||||
| -rw-r--r-- | drivers/net/ehea/ehea_phyp.c | 705 | ||||
| -rw-r--r-- | drivers/net/ehea/ehea_phyp.h | 455 | ||||
| -rw-r--r-- | drivers/net/ehea/ehea_qmr.c | 582 | ||||
| -rw-r--r-- | drivers/net/ehea/ehea_qmr.h | 358 |
10 files changed, 5844 insertions, 0 deletions
diff --git a/drivers/net/ehea/Makefile b/drivers/net/ehea/Makefile new file mode 100644 index 0000000..775d996 --- /dev/null +++ b/drivers/net/ehea/Makefile @@ -0,0 +1,6 @@ +# +# Makefile for the eHEA ethernet device driver for IBM eServer System p +# +ehea-y = ehea_main.o ehea_phyp.o ehea_qmr.o ehea_ethtool.o ehea_phyp.o +obj-$(CONFIG_EHEA) += ehea.o + diff --git a/drivers/net/ehea/ehea.h b/drivers/net/ehea/ehea.h new file mode 100644 index 0000000..23b451a --- /dev/null +++ b/drivers/net/ehea/ehea.h @@ -0,0 +1,447 @@ +/* + * linux/drivers/net/ehea/ehea.h + * + * 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. + */ + +#ifndef __EHEA_H__ +#define __EHEA_H__ + +#include <linux/module.h> +#include <linux/ethtool.h> +#include <linux/vmalloc.h> +#include <linux/if_vlan.h> + +#include <asm/ibmebus.h> +#include <asm/abs_addr.h> +#include <asm/io.h> + +#define DRV_NAME "ehea" +#define DRV_VERSION "EHEA_0028" + +#define EHEA_MSG_DEFAULT (NETIF_MSG_LINK | NETIF_MSG_TIMER \ + | NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR) + +#define EHEA_MAX_ENTRIES_RQ1 32767 +#define EHEA_MAX_ENTRIES_RQ2 16383 +#define EHEA_MAX_ENTRIES_RQ3 16383 +#define EHEA_MAX_ENTRIES_SQ 32767 +#define EHEA_MIN_ENTRIES_QP 127 + +#define EHEA_NUM_TX_QP 1 + +#ifdef EHEA_SMALL_QUEUES +#define EHEA_MAX_CQE_COUNT 1023 +#define EHEA_DEF_ENTRIES_SQ 1023 +#define EHEA_DEF_ENTRIES_RQ1 4095 +#define EHEA_DEF_ENTRIES_RQ2 1023 +#define EHEA_DEF_ENTRIES_RQ3 1023 +#else +#define EHEA_MAX_CQE_COUNT 32000 +#define EHEA_DEF_ENTRIES_SQ 16000 +#define EHEA_DEF_ENTRIES_RQ1 32080 +#define EHEA_DEF_ENTRIES_RQ2 4020 +#define EHEA_DEF_ENTRIES_RQ3 4020 +#endif + +#define EHEA_MAX_ENTRIES_EQ 20 + +#define EHEA_SG_SQ 2 +#define EHEA_SG_RQ1 1 +#define EHEA_SG_RQ2 0 +#define EHEA_SG_RQ3 0 + +#define EHEA_MAX_PACKET_SIZE 9022 /* for jumbo frames */ +#define EHEA_RQ2_PKT_SIZE 1522 +#define EHEA_L_PKT_SIZE 256 /* low latency */ + +#define EHEA_POLL_MAX_RWQE 1000 + +/* Send completion signaling */ +#define EHEA_SIG_IV_LONG 1 + +/* Protection Domain Identifier */ +#define EHEA_PD_ID 0xaabcdeff + +#define EHEA_RQ2_THRESHOLD 1 +#define EHEA_RQ3_THRESHOLD 9 /* use RQ3 threshold of 1522 bytes */ + +#define EHEA_SPEED_10G 10000 +#define EHEA_SPEED_1G 1000 +#define EHEA_SPEED_100M 100 +#define EHEA_SPEED_10M 10 +#define EHEA_SPEED_AUTONEG 0 + +/* Broadcast/Multicast registration types */ +#define EHEA_BCMC_SCOPE_ALL 0x08 +#define EHEA_BCMC_SCOPE_SINGLE 0x00 +#define EHEA_BCMC_MULTICAST 0x04 +#define EHEA_BCMC_BROADCAST 0x00 +#define EHEA_BCMC_UNTAGGED 0x02 +#define EHEA_BCMC_TAGGED 0x00 +#define EHEA_BCMC_VLANID_ALL 0x01 +#define EHEA_BCMC_VLANID_SINGLE 0x00 + +/* Use this define to kmallocate pHYP control blocks */ +#define H_CB_ALIGNMENT 4096 + +#define EHEA_CACHE_LINE 128 + +/* Memory Regions */ +#define EHEA_MR_MAX_TX_PAGES 20 +#define EHEA_MR_TX_DATA_PN 3 +#define EHEA_MR_ACC_CTRL 0x00800000 +#define EHEA_RWQES_PER_MR_RQ2 10 +#define EHEA_RWQES_PER_MR_RQ3 10 + +#define EHEA_WATCH_DOG_TIMEOUT 10*HZ + +/* utility functions */ + +#define ehea_info(fmt, args...) \ + printk(KERN_INFO DRV_NAME ": " fmt "\n", ## args) + +#define ehea_error(fmt, args...) \ + printk(KERN_ERR DRV_NAME ": Error in %s: " fmt "\n", __func__, ## args) + +#ifdef DEBUG +#define ehea_debug(fmt, args...) \ + printk(KERN_DEBUG DRV_NAME ": " fmt, ## args) +#else +#define ehea_debug(fmt, args...) do {} while (0) +#endif + +void ehea_dump(void *adr, int len, char *msg); + +#define EHEA_BMASK(pos, length) (((pos) << 16) + (length)) + +#define EHEA_BMASK_IBM(from, to) (((63 - to) << 16) + ((to) - (from) + 1)) + +#define EHEA_BMASK_SHIFTPOS(mask) (((mask) >> 16) & 0xffff) + +#define EHEA_BMASK_MASK(mask) \ + (0xffffffffffffffffULL >> ((64 - (mask)) & 0xffff)) + +#define EHEA_BMASK_SET(mask, value) \ + ((EHEA_BMASK_MASK(mask) & ((u64)(value))) << EHEA_BMASK_SHIFTPOS(mask)) + +#define EHEA_BMASK_GET(mask, value) \ + (EHEA_BMASK_MASK(mask) & (((u64)(value)) >> EHEA_BMASK_SHIFTPOS(mask))) + +/* + * Generic ehea page + */ +struct ehea_page { + u8 entries[PAGE_SIZE]; +}; + +/* + * Generic queue in linux kernel virtual memory + */ +struct hw_queue { + u64 current_q_offset; /* current queue entry */ + struct ehea_page **queue_pages; /* array of pages belonging to queue */ + u32 qe_size; /* queue entry size */ + u32 queue_length; /* queue length allocated in bytes */ + u32 pagesize; + u32 toggle_state; /* toggle flag - per page */ + u32 reserved; /* 64 bit alignment */ +}; + +/* + * For pSeries this is a 64bit memory address where + * I/O memory is mapped into CPU address space + */ +struct h_epa { + void __iomem *addr; +}; + +struct h_epa_user { + u64 addr; +}; + +struct h_epas { + struct h_epa kernel; /* kernel space accessible resource, + set to 0 if unused */ + struct h_epa_user user; /* user space accessible resource + set to 0 if unused */ +}; + +struct ehea_qp; +struct ehea_cq; +struct ehea_eq; +struct ehea_port; +struct ehea_av; + +/* + * Queue attributes passed to ehea_create_qp() + */ +struct ehea_qp_init_attr { + /* input parameter */ + u32 qp_token; /* queue token */ + u8 low_lat_rq1; + u8 signalingtype; /* cqe generation flag */ + u8 rq_count; /* num of receive queues */ + u8 eqe_gen; /* eqe generation flag */ + u16 max_nr_send_wqes; /* max number of send wqes */ + u16 max_nr_rwqes_rq1; /* max number of receive wqes */ + u16 max_nr_rwqes_rq2; + u16 max_nr_rwqes_rq3; + u8 wqe_size_enc_sq; + u8 wqe_size_enc_rq1; + u8 wqe_size_enc_rq2; + u8 wqe_size_enc_rq3; + u8 swqe_imm_data_len; /* immediate data length for swqes */ + u16 port_nr; + u16 rq2_threshold; + u16 rq3_threshold; + u64 send_cq_handle; + u64 recv_cq_handle; + u64 aff_eq_handle; + + /* output parameter */ + u32 qp_nr; + u16 act_nr_send_wqes; + u16 act_nr_rwqes_rq1; + u16 act_nr_rwqes_rq2; + u16 act_nr_rwqes_rq3; + u8 act_wqe_size_enc_sq; + u8 act_wqe_size_enc_rq1; + u8 act_wqe_size_enc_rq2; + u8 act_wqe_size_enc_rq3; + u32 nr_sq_pages; + u32 nr_rq1_pages; + u32 nr_rq2_pages; + u32 nr_rq3_pages; + u32 liobn_sq; + u32 liobn_rq1; + u32 liobn_rq2; + u32 liobn_rq3; +}; + +/* + * Event Queue attributes, passed as paramter + */ +struct ehea_eq_attr { + u32 type; + u32 max_nr_of_eqes; + u8 eqe_gen; /* generate eqe flag */ + u64 eq_handle; + u32 act_nr_of_eqes; + u32 nr_pages; + u32 ist1; /* Interrupt service token */ + u32 ist2; + u32 ist3; + u32 ist4; +}; + + +/* + * Event Queue + */ +struct ehea_eq { + struct ehea_adapter *adapter; + struct hw_queue hw_queue; + u64 fw_handle; + struct h_epas epas; + spinlock_t spinlock; + struct ehea_eq_attr attr; +}; + +/* + * HEA Queues + */ +struct ehea_qp { + struct ehea_adapter *adapter; + u64 fw_handle; /* QP handle for firmware calls */ + struct hw_queue hw_squeue; + struct hw_queue hw_rqueue1; + struct hw_queue hw_rqueue2; + struct hw_queue hw_rqueue3; + struct h_epas epas; + struct ehea_qp_init_attr init_attr; +}; + +/* + * Completion Queue attributes + */ +struct ehea_cq_attr { + /* input parameter */ + u32 max_nr_of_cqes; + u32 cq_token; + u64 eq_handle; + + /* output parameter */ + u32 act_nr_of_cqes; + u32 nr_pages; +}; + +/* + * Completion Queue + */ +struct ehea_cq { + struct ehea_adapter *adapter; + u64 fw_handle; + struct hw_queue hw_queue; + struct h_epas epas; + struct ehea_cq_attr attr; +}; + +/* + * Memory Region + */ +struct ehea_mr { + u64 handle; + u64 vaddr; + u32 lkey; +}; + +/* + * Port state information + */ +struct port_state { + int poll_max_processed; + int poll_receive_errors; + int ehea_poll; + int queue_stopped; + int min_swqe_avail; + u64 sqc_stop_sum; + int pkt_send; + int pkt_xmit; + int send_tasklet; + int nwqe; +}; + +#define EHEA_IRQ_NAME_SIZE 20 + +/* + * Queue SKB Array + */ +struct ehea_q_skb_arr { + struct sk_buff **arr; /* skb array for queue */ + int len; /* array length */ + int index; /* array index */ + int os_skbs; /* rq2/rq3 only: outstanding skbs */ +}; + +/* + * Port resources + */ +struct ehea_port_res { + struct ehea_mr send_mr; /* send memory region */ + struct ehea_mr recv_mr; /* receive memory region */ + spinlock_t xmit_lock; + struct ehea_port *port; + char int_recv_name[EHEA_IRQ_NAME_SIZE]; + char int_send_name[EHEA_IRQ_NAME_SIZE]; + struct ehea_qp *qp; + struct ehea_cq *send_cq; + struct ehea_cq *recv_cq; + struct ehea_eq *send_eq; + struct ehea_eq *recv_eq; + spinlock_t send_lock; + struct ehea_q_skb_arr rq1_skba; + struct ehea_q_skb_arr rq2_skba; + struct ehea_q_skb_arr rq3_skba; + struct ehea_q_skb_arr sq_skba; + spinlock_t netif_queue; + int queue_stopped; + int swqe_refill_th; + atomic_t swqe_avail; + int swqe_ll_count; + int swqe_count; + u32 swqe_id_counter; + u64 tx_packets; + struct tasklet_struct send_comp_task; + spinlock_t recv_lock; + struct port_state p_state; + u64 rx_packets; + u32 poll_counter; +}; + + +struct ehea_adapter { + u64 handle; + u8 num_ports; + struct ehea_port *port[16]; + struct ehea_eq *neq; /* notification event queue */ + struct workqueue_struct *ehea_wq; + struct tasklet_struct neq_tasklet; + struct ehea_mr mr; + u32 pd; /* protection domain */ + u64 max_mc_mac; /* max number of multicast mac addresses */ +}; + + +struct ehea_mc_list { + struct list_head list; + u64 macaddr; +}; + +#define EHEA_PORT_UP 1 +#define EHEA_PORT_DOWN 0 +#define EHEA_MAX_PORT_RES 16 +struct ehea_port { + struct ehea_adapter *adapter; /* adapter that owns this port */ + struct net_device *netdev; + struct net_device_stats stats; + struct ehea_port_res port_res[EHEA_MAX_PORT_RES]; + struct device_node *of_dev_node; /* Open Firmware Device Node */ + struct ehea_mc_list *mc_list; /* Multicast MAC addresses */ + struct vlan_group *vgrp; + struct ehea_eq *qp_eq; + struct work_struct reset_task; + struct semaphore port_lock; + char int_aff_name[EHEA_IRQ_NAME_SIZE]; + int allmulti; /* Indicates IFF_ALLMULTI state */ + int promisc; /* Indicates IFF_PROMISC state */ + int num_add_tx_qps; + int resets; + u64 mac_addr; + u32 logical_port_id; + u32 port_speed; + u32 msg_enable; + u32 sig_comp_iv; + u32 state; + u8 full_duplex; + u8 autoneg; + u8 num_def_qps; +}; + +struct port_res_cfg { + int max_entries_rcq; + int max_entries_scq; + int max_entries_sq; + int max_entries_rq1; + int max_entries_rq2; + int max_entries_rq3; +}; + + +void ehea_set_ethtool_ops(struct net_device *netdev); +int ehea_sense_port_attr(struct ehea_port *port); +int ehea_set_portspeed(struct ehea_port *port, u32 port_speed); + +#endif /* __EHEA_H__ */ diff --git a/drivers/net/ehea/ehea_ethtool.c b/drivers/net/ehea/ehea_ethtool.c new file mode 100644 index 0000000..82eb2fb --- /dev/null +++ b/drivers/net/ehea/ehea_ethtool.c @@ -0,0 +1,294 @@ +/* + * linux/drivers/net/ehea/ehea_ethtool.c + * + * eHEA ethernet device driver for IBM eServer System p + * + * (C) Copyright IBM Corp. 2006 + * + * Authors: + * Christoph Raisch <raisch@de.ibm.com> + * Jan-Bernd Themann <themann@de.ibm.com> + * Thomas Klein <tklein@de.ibm.com> + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include "ehea.h" +#include "ehea_phyp.h" + +static int ehea_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) +{ + struct ehea_port *port = netdev_priv(dev); + int ret; + + ret = ehea_sense_port_attr(port); + + if (ret) + return ret; + + if (netif_carrier_ok(dev)) { + switch(port->port_speed) { + case EHEA_SPEED_10M: cmd->speed = SPEED_10; break; + case EHEA_SPEED_100M: cmd->speed = SPEED_100; break; + case EHEA_SPEED_1G: cmd->speed = SPEED_1000; break; + case EHEA_SPEED_10G: cmd->speed = SPEED_10000; break; + } + cmd->duplex = port->full_duplex == 1 ? + DUPLEX_FULL : DUPLEX_HALF; + } else { + cmd->speed = -1; + cmd->duplex = -1; + } + + cmd->supported = (SUPPORTED_10000baseT_Full | SUPPORTED_1000baseT_Full + | SUPPORTED_100baseT_Full | SUPPORTED_100baseT_Half + | SUPPORTED_10baseT_Full | SUPPORTED_10baseT_Half + | SUPPORTED_Autoneg | SUPPORTED_FIBRE); + + cmd->advertising = (ADVERTISED_10000baseT_Full | ADVERTISED_Autoneg + | ADVERTISED_FIBRE); + + cmd->port = PORT_FIBRE; + cmd->autoneg = port->autoneg == 1 ? AUTONEG_ENABLE : AUTONEG_DISABLE; + + return 0; +} + +static int ehea_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) +{ + struct ehea_port *port = netdev_priv(dev); + int ret = 0; + u32 sp; + + if (cmd->autoneg == AUTONEG_ENABLE) { + sp = EHEA_SPEED_AUTONEG; + goto doit; + } + + switch(cmd->speed) { + case SPEED_10: + if (cmd->duplex == DUPLEX_FULL) + sp = H_SPEED_10M_F; + else + sp = H_SPEED_10M_H; + break; + + case SPEED_100: + if (cmd->duplex == DUPLEX_FULL) + sp = H_SPEED_100M_F; + else + sp = H_SPEED_100M_H; + break; + + case SPEED_1000: + if (cmd->duplex == DUPLEX_FULL) + sp = H_SPEED_1G_F; + else + ret = -EINVAL; + break; + + case SPEED_10000: + if (cmd->duplex == DUPLEX_FULL) + sp = H_SPEED_10G_F; + else + ret = -EINVAL; + break; + + default: + ret = -EINVAL; + break; + } + + if (ret) + goto out; +doit: + ret = ehea_set_portspeed(port, sp); + + if (!ret) + ehea_info("%s: Port speed succesfully set: %dMbps " + "%s Duplex", + port->netdev->name, port->port_speed, + port->full_duplex == 1 ? "Full" : "Half"); +out: + return ret; +} + +static int ehea_nway_reset(struct net_device *dev) +{ + struct ehea_port *port = netdev_priv(dev); + int ret; + + ret = ehea_set_portspeed(port, EHEA_SPEED_AUTONEG); + + if (!ret) + ehea_info("%s: Port speed succesfully set: %dMbps " + "%s Duplex", + port->netdev->name, port->port_speed, + port->full_duplex == 1 ? "Full" : "Half"); + return ret; +} + +static void ehea_get_drvinfo(struct net_device *dev, + struct ethtool_drvinfo *info) +{ + strlcpy(info->driver, DRV_NAME, sizeof(info->driver) - 1); + strlcpy(info->version, DRV_VERSION, sizeof(info->version) - 1); +} + +static u32 ehea_get_msglevel(struct net_device *dev) +{ + struct ehea_port *port = netdev_priv(dev); + return port->msg_enable; +} + +static void ehea_set_msglevel(struct net_device *dev, u32 value) +{ + struct ehea_port *port = netdev_priv(dev); + port->msg_enable = value; +} + +static u32 ehea_get_rx_csum(struct net_device *dev) +{ + return 1; +} + +static char ehea_ethtool_stats_keys[][ETH_GSTRING_LEN] = { + {"poll_max_processed"}, + {"queue_stopped"}, + {"min_swqe_avail"}, + {"poll_receive_err"}, + {"pkt_send"}, + {"pkt_xmit"}, + {"send_tasklet"}, + {"ehea_poll"}, + {"nwqe"}, + {"swqe_available_0"}, + {"sig_comp_iv"}, + {"swqe_refill_th"}, + {"port resets"}, + {"rxo"}, + {"rx64"}, + {"rx65"}, + {"rx128"}, + {"rx256"}, + {"rx512"}, + {"rx1024"}, + {"txo"}, + {"tx64"}, + {"tx65"}, + {"tx128"}, + {"tx256"}, + {"tx512"}, + {"tx1024"}, +}; + +static void ehea_get_strings(struct net_device *dev, u32 stringset, u8 *data) +{ + if (stringset == ETH_SS_STATS) { + memcpy(data, &ehea_ethtool_stats_keys, + sizeof(ehea_ethtool_stats_keys)); + } +} + +static int ehea_get_stats_count(struct net_device *dev) +{ + return ARRAY_SIZE(ehea_ethtool_stats_keys); +} + +static void ehea_get_ethtool_stats(struct net_device *dev, + struct ethtool_stats *stats, u64 *data) +{ + u64 hret; + int i; + struct ehea_port *port = netdev_priv(dev); + struct ehea_adapter *adapter = port->adapter; + struct ehea_port_res *pr = &port->port_res[0]; + struct port_state *p_state = &pr->p_state; + struct hcp_ehea_port_cb6 *cb6; + + for (i = 0; i < ehea_get_stats_count(dev); i++) + data[i] = 0; + + i = 0; + + data[i++] = p_state->poll_max_processed; + data[i++] = p_state->queue_stopped; + data[i++] = p_state->min_swqe_avail; + data[i++] = p_state->poll_receive_errors; + data[i++] = p_state->pkt_send; + data[i++] = p_state->pkt_xmit; + data[i++] = p_state->send_tasklet; + data[i++] = p_state->ehea_poll; + data[i++] = p_state->nwqe; + data[i++] = atomic_read(&port->port_res[0].swqe_avail); + data[i++] = port->sig_comp_iv; + data[i++] = port->port_res[0].swqe_refill_th; + data[i++] = port->resets; + + cb6 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL); + if (!cb6) { + ehea_error("no mem for cb6"); + return; + } + + hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id, + H_PORT_CB6, H_PORT_CB6_ALL, cb6); + if (netif_msg_hw(port)) + ehea_dump(cb6, sizeof(*cb6), "ehea_get_ethtool_stats"); + + if (hret == H_SUCCESS) { + data[i++] = cb6->rxo; + data[i++] = cb6->rx64; + data[i++] = cb6->rx65; + data[i++] = cb6->rx128; + data[i++] = cb6->rx256; + data[i++] = cb6->rx512; + data[i++] = cb6->rx1024; + data[i++] = cb6->txo; + data[i++] = cb6->tx64; + data[i++] = cb6->tx65; + data[i++] = cb6->tx128; + data[i++] = cb6->tx256; + data[i++] = cb6->tx512; + data[i++] = cb6->tx1024; + } else + ehea_error("query_ehea_port failed"); + + kfree(cb6); +} + +const struct ethtool_ops ehea_ethtool_ops = { + .get_settings = ehea_get_settings, + .get_drvinfo = ehea_get_drvinfo, + .get_msglevel = ehea_get_msglevel, + .set_msglevel = ehea_set_msglevel, + .get_link = ethtool_op_get_link, + .get_tx_csum = ethtool_op_get_tx_csum, + .get_sg = ethtool_op_get_sg, + .get_tso = ethtool_op_get_tso, + .set_tso = ethtool_op_set_tso, + .get_strings = ehea_get_strings, + .get_stats_count = ehea_get_stats_count, + .get_ethtool_stats = ehea_get_ethtool_stats, + .get_rx_csum = ehea_get_rx_csum, + .set_settings = ehea_set_settings, + .nway_reset = ehea_nway_reset, /* Restart autonegotiation */ +}; + +void ehea_set_ethtool_ops(struct net_device *netdev) +{ + SET_ETHTOOL_OPS(netdev, &ehea_ethtool_ops); +} diff --git a/drivers/net/ehea/ehea_hcall.h b/drivers/net/ehea/ehea_hcall.h new file mode 100644 index 0000000..8e7d1c3 --- /dev/null +++ b/drivers/net/ehea/ehea_hcall.h @@ -0,0 +1,51 @@ +/* + * linux/drivers/net/ehea/ehea_hcall.h + * + * 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. + */ + +#ifndef __EHEA_HCALL_H__ +#define __EHEA_HCALL_H__ + +/** + * This file contains HCALL defines that are to be included in the appropriate + * kernel files later + */ + +#define H_ALLOC_HEA_RESOURCE 0x278 +#define H_MODIFY_HEA_QP 0x250 +#define H_QUERY_HEA_QP 0x254 +#define H_QUERY_HEA 0x258 +#define H_QUERY_HEA_PORT 0x25C +#define H_MODIFY_HEA_PORT 0x260 +#define H_REG_BCMC 0x264 +#define H_DEREG_BCMC 0x268 +#define H_REGISTER_HEA_RPAGES 0x26C +#define H_DISABLE_AND_GET_HEA 0x270 +#define H_GET_HEA_INFO 0x274 +#define H_ADD_CONN 0x284 +#define H_DEL_CONN 0x288 + +#endif /* __EHEA_HCALL_H__ */ diff --git a/drivers/net/ehea/ehea_hw.h b/drivers/net/ehea/ehea_hw.h new file mode 100644 index 0000000..1246757 --- /dev/null +++ b/drivers/net/ehea/ehea_hw.h @@ -0,0 +1,292 @@ +/* + * linux/drivers/net/ehea/ehea_hw.h + * + * 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. + */ + +#ifndef __EHEA_HW_H__ +#define __EHEA_HW_H__ + +#define QPX_SQA_VALUE EHEA_BMASK_IBM(48,63) +#define QPX_RQ1A_VALUE EHEA_BMASK_IBM(48,63) +#define QPX_RQ2A_VALUE EHEA_BMASK_IBM(48,63) +#define QPX_RQ3A_VALUE EHEA_BMASK_IBM(48,63) + +#define QPTEMM_OFFSET(x) offsetof(struct ehea_qptemm, x) + +struct ehea_qptemm { + u64 qpx_hcr; + u64 qpx_c; + u64 qpx_herr; + u64 qpx_aer; + u64 qpx_sqa; + u64 qpx_sqc; + u64 qpx_rq1a; + u64 qpx_rq1c; + u64 qpx_st; + u64 qpx_aerr; + u64 qpx_tenure; + u64 qpx_reserved1[(0x098 - 0x058) / 8]; + u64 qpx_portp; + u64 qpx_reserved2[(0x100 - 0x0A0) / 8]; + u64 qpx_t; + u64 qpx_sqhp; + u64 qpx_sqptp; + u64 qpx_reserved3[(0x140 - 0x118) / 8]; + u64 qpx_sqwsize; + u64 qpx_reserved4[(0x170 - 0x148) / 8]; + u64 qpx_sqsize; + u64 qpx_reserved5[(0x1B0 - 0x178) / 8]; + u64 qpx_sigt; + u64 qpx_wqecnt; + u64 qpx_rq1hp; + u64 qpx_rq1ptp; + u64 qpx_rq1size; + u64 qpx_reserved6[(0x220 - 0x1D8) / 8]; + u64 qpx_rq1wsize; + u64 qpx_reserved7[(0x240 - 0x228) / 8]; + u64 qpx_pd; + u64 qpx_scqn; + u64 qpx_rcqn; + u64 qpx_aeqn; + u64 reserved49; + u64 qpx_ram; + u64 qpx_reserved8[(0x300 - 0x270) / 8]; + u64 qpx_rq2a; + u64 qpx_rq2c; + u64 qpx_rq2hp; + u64 qpx_rq2ptp; + u64 qpx_rq2size; + u64 qpx_rq2wsize; + u64 qpx_rq2th; + u64 qpx_rq3a; + u64 qpx_rq3c; + u64 qpx_rq3hp; + u64 qpx_rq3ptp; + u64 qpx_rq3size; + u64 qpx_rq3wsize; + u64 qpx_rq3th; + u64 qpx_lpn; + u64 qpx_reserved9[(0x400 - 0x378) / 8]; + u64 reserved_ext[(0x500 - 0x400) / 8]; + u64 reserved2[(0x1000 - 0x500) / 8]; +}; + +#define MRx_HCR_LPARID_VALID EHEA_BMASK_IBM(0, 0) + +#define MRMWMM_OFFSET(x) offsetof(struct ehea_mrmwmm, x) + +struct ehea_mrmwmm { + u64 mrx_hcr; + u64 mrx_c; + u64 mrx_herr; + u64 mrx_aer; + u64 mrx_pp; + u64 reserved1; + u64 reserved2; + u64 reserved3; + u64 reserved4[(0x200 - 0x40) / 8]; + u64 mrx_ctl[64]; +}; + +#define QPEDMM_OFFSET(x) offsetof(struct ehea_qpedmm, x) + +struct ehea_qpedmm { + + u64 reserved0[(0x400) / 8]; + u64 qpedx_phh; + u64 qpedx_ppsgp; + u64 qpedx_ppsgu; + u64 qpedx_ppdgp; + u64 qpedx_ppdgu; + u64 qpedx_aph; + u64 qpedx_apsgp; + u64 qpedx_apsgu; + u64 qpedx_apdgp; + u64 qpedx_apdgu; + u64 qpedx_apav; + u64 qpedx_apsav; + u64 qpedx_hcr; + u64 reserved1[4]; + u64 qpedx_rrl0; + u64 qpedx_rrrkey0; + u64 qpedx_rrva0; + u64 reserved2; + u64 qpedx_rrl1; + u64 qpedx_rrrkey1; + u64 qpedx_rrva1; + u64 reserved3; + u64 qpedx_rrl2; + u64 qpedx_rrrkey2; + u64 qpedx_rrva2; + u64 reserved4; + u64 qpedx_rrl3; + u64 qpedx_rrrkey3; + u64 qpedx_rrva3; +}; + +#define CQX_FECADDER EHEA_BMASK_IBM(32, 63) +#define CQX_FEC_CQE_CNT EHEA_BMASK_IBM(32, 63) +#define CQX_N1_GENERATE_COMP_EVENT EHEA_BMASK_IBM(0, 0) +#define CQX_EP_EVENT_PENDING EHEA_BMASK_IBM(0, 0) + +#define CQTEMM_OFFSET(x) offsetof(struct ehea_cqtemm, x) + +struct ehea_cqtemm { + u64 cqx_hcr; + u64 cqx_c; + u64 cqx_herr; + u64 cqx_aer; + u64 cqx_ptp; + u64 cqx_tp; + u64 cqx_fec; + u64 cqx_feca; + u64 cqx_ep; + u64 cqx_eq; + u64 reserved1; + u64 cqx_n0; + u64 cqx_n1; + u64 reserved2[(0x1000 - 0x60) / 8]; +}; + +#define EQTEMM_OFFSET(x) offsetof(struct ehea_eqtemm, x) + +struct ehea_eqtemm { + u64 eqx_hcr; + u64 eqx_c; + u64 eqx_herr; + u64 eqx_aer; + u64 eqx_ptp; + u64 eqx_tp; + u64 eqx_ssba; + u64 eqx_psba; + u64 eqx_cec; + u64 eqx_meql; + u64 eqx_xisbi; + u64 eqx_xisc; + u64 eqx_it; +}; + +/* + * These access functions will be changed when the dissuccsion about + * the new access methods for POWER has settled. + */ + +static inline u64 epa_load(struct h_epa epa, u32 offset) +{ + return __raw_readq((void __iomem *)(epa.addr + offset)); +} + +static inline void epa_store(struct h_epa epa, u32 offset, u64 value) +{ + __raw_writeq(value, (void __iomem *)(epa.addr + offset)); + epa_load(epa, offset); /* synchronize explicitly to eHEA */ +} + +static inline void epa_store_acc(struct h_epa epa, u32 offset, u64 value) +{ + __raw_writeq(value, (void __iomem *)(epa.addr + offset)); +} + +#define epa_store_eq(epa, offset, value)\ + epa_store(epa, EQTEMM_OFFSET(offset), value) +#define epa_load_eq(epa, offset)\ + epa_load(epa, EQTEMM_OFFSET(offset)) + +#define epa_store_cq(epa, offset, value)\ + epa_store(epa, CQTEMM_OFFSET(offset), value) +#define epa_load_cq(epa, offset)\ + epa_load(epa, CQTEMM_OFFSET(offset)) + +#define epa_store_qp(epa, offset, value)\ + epa_store(epa, QPTEMM_OFFSET(offset), value) +#define epa_load_qp(epa, offset)\ + epa_load(epa, QPTEMM_OFFSET(offset)) + +#define epa_store_qped(epa, offset, value)\ + epa_store(epa, QPEDMM_OFFSET(offset), value) +#define epa_load_qped(epa, offset)\ + epa_load(epa, QPEDMM_OFFSET(offset)) + +#define epa_store_mrmw(epa, offset, value)\ + epa_store(epa, MRMWMM_OFFSET(offset), value) +#define epa_load_mrmw(epa, offset)\ + epa_load(epa, MRMWMM_OFFSET(offset)) + +#define epa_store_base(epa, offset, value)\ + epa_store(epa, HCAGR_OFFSET(offset), value) +#define epa_load_base(epa, offset)\ + epa_load(epa, HCAGR_OFFSET(offset)) + +static inline void ehea_update_sqa(struct ehea_qp *qp, u16 nr_wqes) +{ + struct h_epa epa = qp->epas.kernel; + epa_store_acc(epa, QPTEMM_OFFSET(qpx_sqa), + EHEA_BMASK_SET(QPX_SQA_VALUE, nr_wqes)); +} + +static inline void ehea_update_rq3a(struct ehea_qp *qp, u16 nr_wqes) +{ + struct h_epa epa = qp->epas.kernel; + epa_store_acc(epa, QPTEMM_OFFSET(qpx_rq3a), + EHEA_BMASK_SET(QPX_RQ1A_VALUE, nr_wqes)); +} + +static inline void ehea_update_rq2a(struct ehea_qp *qp, u16 nr_wqes) +{ + struct h_epa epa = qp->epas.kernel; + epa_store_acc(epa, QPTEMM_OFFSET(qpx_rq2a), + EHEA_BMASK_SET(QPX_RQ2A_VALUE, nr_wqes)); +} + +static inline void ehea_update_rq1a(struct ehea_qp *qp, u16 nr_wqes) +{ + struct h_epa epa = qp->epas.kernel; + epa_store_acc(epa, QPTEMM_OFFSET(qpx_rq1a), + EHEA_BMASK_SET(QPX_RQ3A_VALUE, nr_wqes)); +} + +static inline void ehea_update_feca(struct ehea_cq *cq, u32 nr_cqes) +{ + struct h_epa epa = cq->epas.kernel; + epa_store_acc(epa, CQTEMM_OFFSET(cqx_feca), + EHEA_BMASK_SET(CQX_FECADDER, nr_cqes)); +} + +static inline void ehea_reset_cq_n1(struct ehea_cq *cq) +{ + struct h_epa epa = cq->epas.kernel; + epa_store_cq(epa, cqx_n1, + EHEA_BMASK_SET(CQX_N1_GENERATE_COMP_EVENT, 1)); +} + +static inline void ehea_reset_cq_ep(struct ehea_cq *my_cq) +{ + struct h_epa epa = my_cq->epas.kernel; + epa_store_acc(epa, CQTEMM_OFFSET(cqx_ep), + EHEA_BMASK_SET(CQX_EP_EVENT_PENDING, 0)); +} + +#endif /* __EHEA_HW_H__ */ diff --git a/drivers/net/ehea/ehea_main.c b/drivers/net/ehea/ehea_main.c new file mode 100644 index 0000000..263d1c5 --- /dev/null +++ b/drivers/net/ehea/ehea_main.c @@ -0,0 +1,2654 @@ +/* + * linux/drivers/net/ehea/ehea_main.c + * + * eHEA ethernet device driver for IBM eServer System p + * + * (C) Copyright IBM Corp. 2006 + * + * Authors: + * Christoph Raisch <raisch@de.ibm.com> + * Jan-Bernd Themann <themann@de.ibm.com> + * Thomas Klein <tklein@de.ibm.com> + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/in.h> +#include <linux/ip.h> +#include <linux/tcp.h> +#include <linux/udp.h> +#include <linux/if.h> +#include <linux/list.h> +#include <linux/if_ether.h> +#include <net/ip.h> + +#include "ehea.h" +#include "ehea_qmr.h" +#include "ehea_phyp.h" + + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>"); +MODULE_DESCRIPTION("IBM eServer HEA Driver"); +MODULE_VERSION(DRV_VERSION); + + +static int msg_level = -1; +static int rq1_entries = EHEA_DEF_ENTRIES_RQ1; +static int rq2_entries = EHEA_DEF_ENTRIES_RQ2; +static int rq3_entries = EHEA_DEF_ENTRIES_RQ3; +static int sq_entries = EHEA_DEF_ENTRIES_SQ; + +module_param(msg_level, int, 0); +module_param(rq1_entries, int, 0); +module_param(rq2_entries, int, 0); +module_param(rq3_entries, int, 0); +module_param(sq_entries, int, 0); + +MODULE_PARM_DESC(msg_level, "msg_level"); +MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 " + "[2^x - 1], x = [6..14]. Default = " + __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")"); +MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 " + "[2^x - 1], x = [6..14]. Default = " + __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")"); +MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 " + "[2^x - 1], x = [6..14]. Default = " + __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")"); +MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue " + "[2^x - 1], x = [6..14]. Default = " + __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")"); + +void ehea_dump(void *adr, int len, char *msg) { + int x; + unsigned char *deb = adr; + for (x = 0; x < len; x += 16) { + printk(DRV_NAME "%s adr=%p ofs=%04x %016lx %016lx\n", msg, + deb, x, *((u64*)&deb[0]), *((u64*)&deb[8])); + deb += 16; + } +} + +static struct net_device_stats *ehea_get_stats(struct net_device *dev) +{ + struct ehea_port *port = netdev_priv(dev); + struct net_device_stats *stats = &port->stats; + struct hcp_ehea_port_cb2 *cb2; + u64 hret, rx_packets; + int i; + + memset(stats, 0, sizeof(*stats)); + + cb2 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL); + if (!cb2) { + ehea_error("no mem for cb2"); + goto out; + } + + hret = ehea_h_query_ehea_port(port->adapter->handle, + port->logical_port_id, + H_PORT_CB2, H_PORT_CB2_ALL, cb2); + if (hret != H_SUCCESS) { + ehea_error("query_ehea_port failed"); + goto out_herr; + } + + if (netif_msg_hw(port)) + ehea_dump(cb2, sizeof(*cb2), "net_device_stats"); + + rx_packets = 0; + for (i = 0; i < port->num_def_qps; i++) + rx_packets += port->port_res[i].rx_packets; + + stats->tx_packets = cb2->txucp + cb2->txmcp + cb2->txbcp; + stats->multicast = cb2->rxmcp; + stats->rx_errors = cb2->rxuerr; + stats->rx_bytes = cb2->rxo; + stats->tx_bytes = cb2->txo; + stats->rx_packets = rx_packets; + +out_herr: + kfree(cb2); +out: + return stats; +} + +static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes) +{ + struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr; + struct net_device *dev = pr->port->netdev; + int max_index_mask = pr->rq1_skba.len - 1; + int i; + + if (!nr_of_wqes) + return; + + for (i = 0; i < nr_of_wqes; i++) { + if (!skb_arr_rq1[index]) { + skb_arr_rq1[index] = netdev_alloc_skb(dev, + EHEA_L_PKT_SIZE); + if (!skb_arr_rq1[index]) { + ehea_error("%s: no mem for skb/%d wqes filled", + dev->name, i); + break; + } + } + index--; + index &= max_index_mask; + } + /* Ring doorbell */ + ehea_update_rq1a(pr->qp, i); +} + +static int ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a) +{ + int ret = 0; + struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr; + struct net_device *dev = pr->port->netdev; + int i; + + for (i = 0; i < pr->rq1_skba.len; i++) { + skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE); + if (!skb_arr_rq1[i]) { + ehea_error("%s: no mem for skb/%d wqes filled", + dev->name, i); + ret = -ENOMEM; + goto out; + } + } + /* Ring doorbell */ + ehea_update_rq1a(pr->qp, nr_rq1a); +out: + return ret; +} + +static int ehea_refill_rq_def(struct ehea_port_res *pr, + struct ehea_q_skb_arr *q_skba, int rq_nr, + int num_wqes, int wqe_type, int packet_size) +{ + struct net_device *dev = pr->port->netdev; + struct ehea_qp *qp = pr->qp; + struct sk_buff **skb_arr = q_skba->arr; + struct ehea_rwqe *rwqe; + int i, index, max_index_mask, fill_wqes; + int ret = 0; + + fill_wqes = q_skba->os_skbs + num_wqes; + + if (!fill_wqes) + return ret; + + index = q_skba->index; + max_index_mask = q_skba->len - 1; + for (i = 0; i < fill_wqes; i++) { + struct sk_buff *skb = netdev_alloc_skb(dev, packet_size); + if (!skb) { + ehea_error("%s: no mem for skb/%d wqes filled", + dev->name, i); + q_skba->os_skbs = fill_wqes - i; + ret = -ENOMEM; + break; + } + skb_reserve(skb, NET_IP_ALIGN); + + skb_arr[index] = skb; + + rwqe = ehea_get_next_rwqe(qp, rq_nr); + rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type) + | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index); + rwqe->sg_list[0].l_key = pr->recv_mr.lkey; + rwqe->sg_list[0].vaddr = (u64)skb->data; + rwqe->sg_list[0].len = packet_size; + rwqe->data_segments = 1; + + index++; + index &= max_index_mask; + } + q_skba->index = index; + + /* Ring doorbell */ + iosync(); + if (rq_nr == 2) + ehea_update_rq2a(pr->qp, i); + else + ehea_update_rq3a(pr->qp, i); + + return ret; +} + + +static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes) +{ + return ehea_refill_rq_def(pr, &pr->rq2_skba, 2, + nr_of_wqes, EHEA_RWQE2_TYPE, + EHEA_RQ2_PKT_SIZE + NET_IP_ALIGN); +} + + +static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes) +{ + return ehea_refill_rq_def(pr, &pr->rq3_skba, 3, + nr_of_wqes, EHEA_RWQE3_TYPE, + EHEA_MAX_PACKET_SIZE + NET_IP_ALIGN); +} + +static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num) +{ + *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5; + if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0) + return 0; + if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) && + (cqe->header_length == 0)) + return 0; + return -EINVAL; +} + +static inline void ehea_fill_skb(struct net_device *dev, + struct sk_buff *skb, struct ehea_cqe *cqe) +{ + int length = cqe->num_bytes_transfered - 4; /*remove CRC */ + + skb_put(skb, length); + skb->ip_summed = CHECKSUM_UNNECESSARY; + skb->protocol = eth_type_trans(skb, dev); +} + +static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array, + int arr_len, + struct ehea_cqe *cqe) +{ + int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id); + struct sk_buff *skb; + void *pref; + int x; + + x = skb_index + 1; + x &= (arr_len - 1); + + pref = skb_array[x]; + prefetchw(pref); + prefetchw(pref + EHEA_CACHE_LINE); + + pref = (skb_array[x]->data); + prefetch(pref); + prefetch(pref + EHEA_CACHE_LINE); + prefetch(pref + EHEA_CACHE_LINE * 2); + prefetch(pref + EHEA_CACHE_LINE * 3); + skb = skb_array[skb_index]; + skb_array[skb_index] = NULL; + return skb; +} + +static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array, + int arr_len, int wqe_index) +{ + struct sk_buff *skb; + void *pref; + int x; + + x = wqe_index + 1; + x &= (arr_len - 1); + + pref = skb_array[x]; + prefetchw(pref); + prefetchw(pref + EHEA_CACHE_LINE); + + pref = (skb_array[x]->data); + prefetchw(pref); + prefetchw(pref + EHEA_CACHE_LINE); + + skb = skb_array[wqe_index]; + skb_array[wqe_index] = NULL; + return skb; +} + +static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq, + struct ehea_cqe *cqe, int *processed_rq2, + int *processed_rq3) +{ + struct sk_buff *skb; + + if (netif_msg_rx_err(pr->port)) { + ehea_error("CQE Error for QP %d", pr->qp->init_attr.qp_nr); + ehea_dump(cqe, sizeof(*cqe), "CQE"); + } + + if (rq == 2) { + *processed_rq2 += 1; + skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe); + dev_kfree_skb(skb); + } else if (rq == 3) { + *processed_rq3 += 1; + skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe); + dev_kfree_skb(skb); + } + + if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) { + ehea_error("Critical receive error. Resetting port."); + queue_work(pr->port->adapter->ehea_wq, &pr->port->reset_task); + return 1; + } + + return 0; +} + +static int ehea_poll(struct net_device *dev, int *budget) +{ + struct ehea_port *port = netdev_priv(dev); + struct ehea_port_res *pr = &port->port_res[0]; + struct ehea_qp *qp = pr->qp; + struct ehea_cqe *cqe; + struct sk_buff *skb; + struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr; + struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr; + struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr; + int skb_arr_rq1_len = pr->rq1_skba.len; + int skb_arr_rq2_len = pr->rq2_skba.len; + int skb_arr_rq3_len = pr->rq3_skba.len; + int processed, processed_rq1, processed_rq2, processed_rq3; + int wqe_index, last_wqe_index, rq, intreq, my_quota, port_reset; + + processed = processed_rq1 = processed_rq2 = processed_rq3 = 0; + last_wqe_index = 0; + my_quota = min(*budget, dev->quota); + my_quota = min(my_quota, EHEA_POLL_MAX_RWQE); + + /* rq0 is low latency RQ */ + cqe = ehea_poll_rq1(qp, &wqe_index); + while ((my_quota > 0) && cqe) { + ehea_inc_rq1(qp); + processed_rq1++; + processed++; + my_quota--; + if (netif_msg_rx_status(port)) + ehea_dump(cqe, sizeof(*cqe), "CQE"); + + last_wqe_index = wqe_index; + rmb(); + if (!ehea_check_cqe(cqe, &rq)) { + if (rq == 1) { /* LL RQ1 */ + skb = get_skb_by_index_ll(skb_arr_rq1, + skb_arr_rq1_len, + wqe_index); + if (unlikely(!skb)) { + if (netif_msg_rx_err(port)) + ehea_error("LL rq1: skb=NULL"); + skb = netdev_alloc_skb(dev, + EHEA_L_PKT_SIZE); + if (!skb) + break; + } + memcpy(skb->data, ((char*)cqe) + 64, + cqe->num_bytes_transfered - 4); + ehea_fill_skb(dev, skb, cqe); + } else if (rq == 2) { /* RQ2 */ + skb = get_skb_by_index(skb_arr_rq2, + skb_arr_rq2_len, cqe); + if (unlikely(!skb)) { + if (netif_msg_rx_err(port)) + ehea_error("rq2: skb=NULL"); + break; + } + ehea_fill_skb(dev, skb, cqe); + processed_rq2++; + } else { /* RQ3 */ + skb = get_skb_by_index(skb_arr_rq3, + skb_arr_rq3_len, cqe); + if (unlikely(!skb)) { + if (netif_msg_rx_err(port)) + ehea_error("rq3: skb=NULL"); + break; + } + ehea_fill_skb(dev, skb, cqe); + processed_rq3++; + } + + if (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT) + vlan_hwaccel_receive_skb(skb, port->vgrp, + cqe->vlan_tag); + else + netif_receive_skb(skb); + + } else { /* Error occured */ + pr->p_state.poll_receive_errors++; + port_reset = ehea_treat_poll_error(pr, rq, cqe, + &processed_rq2, + &processed_rq3); + if (port_reset) + break; + } + cqe = ehea_poll_rq1(qp, &wqe_index); + } + + dev->quota -= processed; + *budget -= processed; + + pr->p_state.ehea_poll += 1; + pr->rx_packets += processed; + + ehea_refill_rq1(pr, last_wqe_index, processed_rq1); + ehea_refill_rq2(pr, processed_rq2); + ehea_refill_rq3(pr, processed_rq3); + + intreq = ((pr->p_state.ehea_poll & 0xF) == 0xF); + + if (!cqe || intreq) { + netif_rx_complete(dev); + ehea_reset_cq_ep(pr->recv_cq); + ehea_reset_cq_n1(pr->recv_cq); + cqe = hw_qeit_get_valid(&qp->hw_rqueue1); + if (!cqe || intreq) + return 0; + if (!netif_rx_reschedule(dev, my_quota)) + return 0; + } + return 1; +} + +void free_sent_skbs(struct ehea_cqe *cqe, struct ehea_port_res *pr) +{ + struct sk_buff *skb; + int index, max_index_mask, i; + + index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id); + max_index_mask = pr->sq_skba.len - 1; + for (i = 0; i < EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id); i++) { + skb = pr->sq_skba.arr[index]; + if (likely(skb)) { + dev_kfree_skb(skb); + pr->sq_skba.arr[index] = NULL; + } else { + ehea_error("skb=NULL, wr_id=%lX, loop=%d, index=%d", + cqe->wr_id, i, index); + } + index--; + index &= max_index_mask; + } +} + +#define MAX_SENDCOMP_QUOTA 400 +void ehea_send_irq_tasklet(unsigned long data) +{ + struct ehea_port_res *pr = (struct ehea_port_res*)data; + struct ehea_cq *send_cq = pr->send_cq; + struct ehea_cqe *cqe; + int quota = MAX_SENDCOMP_QUOTA; + int cqe_counter = 0; + int swqe_av = 0; + unsigned long flags; + + do { + cqe = ehea_poll_cq(send_cq); + if (!cqe) { + ehea_reset_cq_ep(send_cq); + ehea_reset_cq_n1(send_cq); + cqe = ehea_poll_cq(send_cq); + if (!cqe) + break; + } + cqe_counter++; + rmb(); + if (cqe->status & EHEA_CQE_STAT_ERR_MASK) { + ehea_error("Send Completion Error: Resetting port"); + if (netif_msg_tx_err(pr->port)) + ehea_dump(cqe, sizeof(*cqe), "Send CQE"); + queue_work(pr->port->adapter->ehea_wq, + &pr->port->reset_task); + break; + } + + if (netif_msg_tx_done(pr->port)) + ehea_dump(cqe, sizeof(*cqe), "CQE"); + + if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id) + == EHEA_SWQE2_TYPE)) + free_sent_skbs(cqe, pr); + + swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id); + quota--; + } while (quota > 0); + + ehea_update_feca(send_cq, cqe_counter); + atomic_add(swqe_av, &pr->swqe_avail); + + spin_lock_irqsave(&pr->netif_queue, flags); + if (pr->queue_stopped && (atomic_read(&pr->swqe_avail) + >= pr->swqe_refill_th)) { + netif_wake_queue(pr->port->netdev); + pr->queue_stopped = 0; + } + spin_unlock_irqrestore(&pr->netif_queue, flags); + + if (unlikely(cqe)) + tasklet_hi_schedule(&pr->send_comp_task); +} + +static irqreturn_t ehea_send_irq_handler(int irq, void *param, + struct pt_regs *regs) +{ + struct ehea_port_res *pr = param; + tasklet_hi_schedule(&pr->send_comp_task); + return IRQ_HANDLED; +} + +static irqreturn_t ehea_recv_irq_handler(int irq, void *param, + struct pt_regs *regs) +{ + struct ehea_port_res *pr = param; + struct ehea_port *port = pr->port; + netif_rx_schedule(port->netdev); + return IRQ_HANDLED; +} + +static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param, + struct pt_regs *regs) +{ + struct ehea_port *port = param; + struct ehea_eqe *eqe; + u32 qp_token; + + eqe = ehea_poll_eq(port->qp_eq); + ehea_debug("eqe=%p", eqe); + while (eqe) { + ehea_debug("*eqe=%lx", *(u64*)eqe); + eqe = ehea_poll_eq(port->qp_eq); + qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry); + ehea_debug("next eqe=%p", eqe); + } + + return IRQ_HANDLED; +} + +static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter, + int logical_port) +{ + int i; + + for (i = 0; i < adapter->num_ports; i++) + if (adapter->port[i]->logical_port_id == logical_port) + return adapter->port[i]; + return NULL; +} + +int ehea_sense_port_attr(struct ehea_port *port) +{ + int ret; + u64 hret; + struct hcp_ehea_port_cb0 *cb0; + + cb0 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL); + if (!cb0) { + ehea_error("no mem for cb0"); + ret = -ENOMEM; + goto out; + } + + hret = ehea_h_query_ehea_port(port->adapter->handle, + port->logical_port_id, H_PORT_CB0, + EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF), + cb0); + if (hret != H_SUCCESS) { + ret = -EIO; + goto out_free; + } + + /* MAC address */ + port->mac_addr = cb0->port_mac_addr << 16; + + if (!is_valid_ether_addr((u8*)&port->mac_addr)) { + ret = -EADDRNOTAVAIL; + goto out_free; + } + + /* Port speed */ + switch (cb0->port_speed) { + case H_SPEED_10M_H: + port->port_speed = EHEA_SPEED_10M; + port->full_duplex = 0; + break; + case H_SPEED_10M_F: + port->port_speed = EHEA_SPEED_10M; + port->full_duplex = 1; + break; + case H_SPEED_100M_H: + port->port_speed = EHEA_SPEED_100M; + port->full_duplex = 0; + break; + case H_SPEED_100M_F: + port->port_speed = EHEA_SPEED_100M; + port->full_duplex = 1; + break; + case H_SPEED_1G_F: + port->port_speed = EHEA_SPEED_1G; + port->full_duplex = 1; + break; + case H_SPEED_10G_F: + port->port_speed = EHEA_SPEED_10G; + port->full_duplex = 1; + break; + default: + port->port_speed = 0; + port->full_duplex = 0; + break; + } + + /* Number of default QPs */ + port->num_def_qps = cb0->num_default_qps; + + if (!port->num_def_qps) { + ret = -EINVAL; + goto out_free; + } + + if (port->num_def_qps >= EHEA_NUM_TX_QP) + port->num_add_tx_qps = 0; + else + port->num_add_tx_qps = EHEA_NUM_TX_QP - port->num_def_qps; + + ret = 0; +out_free: + if (ret || netif_msg_probe(port)) + ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr"); + kfree(cb0); +out: + return ret; +} + +int ehea_set_portspeed(struct ehea_port *port, u32 port_speed) +{ + struct hcp_ehea_port_cb4 *cb4; + u64 hret; + int ret = 0; + + cb4 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL); + if (!cb4) { + ehea_error("no mem for cb4"); + ret = -ENOMEM; + goto out; + } + + cb4->port_speed = port_speed; + + netif_carrier_off(port->netdev); + + hret = ehea_h_modify_ehea_port(port->adapter->handle, + port->logical_port_id, + H_PORT_CB4, H_PORT_CB4_SPEED, cb4); + if (hret == H_SUCCESS) { + port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0; + + hret = ehea_h_query_ehea_port(port->adapter->handle, + port->logical_port_id, + H_PORT_CB4, H_PORT_CB4_SPEED, + cb4); + if (hret == H_SUCCESS) { + switch (cb4->port_speed) { + case H_SPEED_10M_H: + port->port_speed = EHEA_SPEED_10M; + port->full_duplex = 0; + break; + case H_SPEED_10M_F: + port->port_speed = EHEA_SPEED_10M; + port->full_duplex = 1; + break; + case H_SPEED_100M_H: + port->port_speed = EHEA_SPEED_100M; + port->full_duplex = 0; + break; + case H_SPEED_100M_F: + port->port_speed = EHEA_SPEED_100M; + port->full_duplex = 1; + break; + case H_SPEED_1G_F: + port->port_speed = EHEA_SPEED_1G; + port->full_duplex = 1; + break; + case H_SPEED_10G_F: + port->port_speed = EHEA_SPEED_10G; + port->full_duplex = 1; + break; + default: + port->port_speed = 0; + port->full_duplex = 0; + break; + } + } else { + ehea_error("Failed sensing port speed"); + ret = -EIO; + } + } else { + if (hret == H_AUTHORITY) { + ehea_info("Hypervisor denied setting port speed. Either" + " this partition is not authorized to set " + "port speed or another partition has modified" + " port speed first."); + ret = -EPERM; + } else { + ret = -EIO; + ehea_error("Failed setting port speed"); + } + } + netif_carrier_on(port->netdev); + kfree(cb4); +out: + return ret; +} + +static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe) +{ + int ret; + u8 ec; + u8 portnum; + struct ehea_port *port; + + ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe); + portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe); + port = ehea_get_port(adapter, portnum); + + switch (ec) { + case EHEA_EC_PORTSTATE_CHG: /* port state change */ + + if (!port) { + ehea_error("unknown portnum %x", portnum); + break; + } + + if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) { + if (!netif_carrier_ok(port->netdev)) { + ret = ehea_sense_port_attr( + adapter->port[portnum]); + if (ret) { + ehea_error("failed resensing port " + "attributes"); + break; + } + + if (netif_msg_link(port)) + ehea_info("%s: Logical port up: %dMbps " + "%s Duplex", + port->netdev->name, + port->port_speed, + port->full_duplex == + 1 ? "Full" : "Half"); + + netif_carrier_on(port->netdev); + netif_wake_queue(port->netdev); + } + } else + if (netif_carrier_ok(port->netdev)) { + if (netif_msg_link(port)) + ehea_info("%s: Logical port down", + port->netdev->name); + netif_carrier_off(port->netdev); + netif_stop_queue(port->netdev); + } + + if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) { + if (netif_msg_link(port)) + ehea_info("%s: Physical port up", + port->netdev->name); + } else { + if (netif_msg_link(port)) + ehea_info("%s: Physical port down", + port->netdev->name); + } + + if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe)) + ehea_info("External switch port is primary port"); + else + ehea_info("External switch port is backup port"); + + break; + case EHEA_EC_ADAPTER_MALFUNC: + ehea_error("Adapter malfunction"); + break; + case EHEA_EC_PORT_MALFUNC: + ehea_info("Port malfunction: Device: %s", port->netdev->name); + netif_carrier_off(port->netdev); + netif_stop_queue(port->netdev); + break; + default: + ehea_error("unknown event code %x", ec); + break; + } +} + +static void ehea_neq_tasklet(unsigned long data) +{ + struct ehea_adapter *adapter = (struct ehea_adapter*)data; + struct ehea_eqe *eqe; + u64 event_mask; + + eqe = ehea_poll_eq(adapter->neq); + ehea_debug("eqe=%p", eqe); + + while (eqe) { + ehea_debug("*eqe=%lx", eqe->entry); + ehea_parse_eqe(adapter, eqe->entry); + eqe = ehea_poll_eq(adapter->neq); + ehea_debug("next eqe=%p", eqe); + } + + event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1) + | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1) + | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1); + + ehea_h_reset_events(adapter->handle, + adapter->neq->fw_handle, event_mask); +} + +static irqreturn_t ehea_interrupt_neq(int irq, void *param, + struct pt_regs *regs) +{ + struct ehea_adapter *adapter = param; + tasklet_hi_schedule(&adapter->neq_tasklet); + return IRQ_HANDLED; +} + + +static int ehea_fill_port_res(struct ehea_port_res *pr) +{ + int ret; + struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr; + + ret = ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1 + - init_attr->act_nr_rwqes_rq2 + - init_attr->act_nr_rwqes_rq3 - 1); + + ret |= ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1); + + ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1); + + return ret; +} + +static int ehea_reg_interrupts(struct net_device *dev) +{ + struct ehea_port *port = netdev_priv(dev); + struct ehea_port_res *pr; + int i, ret; + + for (i = 0; i < port->num_def_qps; i++) { + pr = &port->port_res[i]; + snprintf(pr->int_recv_name, EHEA_IRQ_NAME_SIZE - 1 + , "%s-recv%d", dev->name, i); + ret = ibmebus_request_irq(NULL, pr->recv_eq->attr.ist1, + ehea_recv_irq_handler, + SA_INTERRUPT, pr->int_recv_name, pr); + if (ret) { + ehea_error("failed registering irq for ehea_recv_int:" + "port_res_nr:%d, ist=%X", i, + pr->recv_eq->attr.ist1); + goto out_free_seq; + } + if (netif_msg_ifup(port)) + ehea_info("irq_handle 0x%X for funct ehea_recv_int %d " + "registered", pr->recv_eq->attr.ist1, i); + } + + snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff", + dev->name); + + ret = ibmebus_request_irq(NULL, port->qp_eq->attr.ist1, + ehea_qp_aff_irq_handler, + SA_INTERRUPT, port->int_aff_name, port); + if (ret) { + ehea_error("failed registering irq for qp_aff_irq_handler:" + "ist=%X", port->qp_eq->attr.ist1); + goto out_free_qpeq; + } + + if (netif_msg_ifup(port)) + ehea_info("irq_handle 0x%X for function qp_aff_irq_handler " + "registered", port->qp_eq->attr.ist1); + + for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { + pr = &port->port_res[i]; + snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1, + "%s-send%d", dev->name, i); + ret = ibmebus_request_irq(NULL, pr->send_eq->attr.ist1, + ehea_send_irq_handler, + SA_INTERRUPT, pr->int_send_name, + pr); + if (ret) { + ehea_error("failed registering irq for ehea_send " + "port_res_nr:%d, ist=%X", i, + pr->send_eq->attr.ist1); + goto out_free_req; + } + if (netif_msg_ifup(port)) + ehea_info("irq_handle 0x%X for function ehea_send_int " + "%d registered", pr->send_eq->attr.ist1, i); + } +out: + return ret; + +out_free_req: + while (--i >= 0) { + u32 ist = port->port_res[i].send_eq->attr.ist1; + ibmebus_free_irq(NULL, ist, &port->port_res[i]); + } +out_free_qpeq: + ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port); + i = port->num_def_qps; +out_free_seq: + while (--i >= 0) { + u32 ist = port->port_res[i].recv_eq->attr.ist1; + ibmebus_free_irq(NULL, ist, &port->port_res[i]); + } + goto out; +} + +static void ehea_free_interrupts(struct net_device *dev) +{ + struct ehea_port *port = netdev_priv(dev); + struct ehea_port_res *pr; + int i; + + /* send */ + for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { + pr = &port->port_res[i]; + ibmebus_free_irq(NULL, pr->send_eq->attr.ist1, pr); + if (netif_msg_intr(port)) + ehea_info("free send irq for res %d with handle 0x%X", + i, pr->send_eq->attr.ist1); + } + + /* receive */ + for (i = 0; i < port->num_def_qps; i++) { + pr = &port->port_res[i]; + ibmebus_free_irq(NULL, pr->recv_eq->attr.ist1, pr); + if (netif_msg_intr(port)) + ehea_info("free recv irq for res %d with handle 0x%X", + i, pr->recv_eq->attr.ist1); + } + + /* associated events */ + ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port); + if (netif_msg_intr(port)) + ehea_info("associated event interrupt for handle 0x%X freed", + port->qp_eq->attr.ist1); +} + +static int ehea_configure_port(struct ehea_port *port) +{ + int ret, i; + u64 hret, mask; + struct hcp_ehea_port_cb0 *cb0; + + ret = -ENOMEM; + cb0 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL); + if (!cb0) + goto out; + + cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1) + | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1) + | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1) + | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1) + | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER, + PXLY_RC_VLAN_FILTER) + | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1); + + for (i = 0; i < port->num_def_qps; i++) + cb0->default_qpn_arr[i] = port->port_res[i].qp->init_attr.qp_nr; + + if (netif_msg_ifup(port)) + ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port"); + + mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1) + | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1); + + hret = ehea_h_modify_ehea_port(port->adapter->handle, + port->logical_port_id, + H_PORT_CB0, mask, cb0); + ret = -EIO; + if (hret != H_SUCCESS) + goto out_free; + + ret = 0; + +out_free: + kfree(cb0); +out: + return ret; +} + +static int ehea_gen_smrs(struct ehea_port_res *pr) +{ + u64 hret; + struct ehea_adapter *adapter = pr->port->adapter; + + hret = ehea_h_register_smr(adapter->handle, adapter->mr.handle, + adapter->mr.vaddr, EHEA_MR_ACC_CTRL, + adapter->pd, &pr->send_mr); + if (hret != H_SUCCESS) + goto out; + + hret = ehea_h_register_smr(adapter->handle, adapter->mr.handle, + adapter->mr.vaddr, EHEA_MR_ACC_CTRL, + adapter->pd, &pr->recv_mr); + if (hret != H_SUCCESS) + goto out_freeres; + + return 0; + +out_freeres: + hret = ehea_h_free_resource(adapter->handle, pr->send_mr.handle); + if (hret != H_SUCCESS) + ehea_error("failed freeing SMR"); +out: + return -EIO; +} + +static int ehea_rem_smrs(struct ehea_port_res *pr) +{ + struct ehea_adapter *adapter = pr->port->adapter; + int ret = 0; + u64 hret; + + hret = ehea_h_free_resource(adapter->handle, pr->send_mr.handle); + if (hret != H_SUCCESS) { + ret = -EIO; + ehea_error("failed freeing send SMR for pr=%p", pr); + } + + hret = ehea_h_free_resource(adapter->handle, pr->recv_mr.handle); + if (hret != H_SUCCESS) { + ret = -EIO; + ehea_error("failed freeing recv SMR for pr=%p", pr); + } + + return ret; +} + +static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries) +{ + int arr_size = sizeof(void*) * max_q_entries; + + q_skba->arr = vmalloc(arr_size); + if (!q_skba->arr) + return -ENOMEM; + + memset(q_skba->arr, 0, arr_size); + + q_skba->len = max_q_entries; + q_skba->index = 0; + q_skba->os_skbs = 0; + + return 0; +} + +static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr, + struct port_res_cfg *pr_cfg, int queue_token) +{ + struct ehea_adapter *adapter = port->adapter; + enum ehea_eq_type eq_type = EHEA_EQ; + struct ehea_qp_init_attr *init_attr = NULL; + int ret = -EIO; + + memset(pr, 0, sizeof(struct ehea_port_res)); + + pr->port = port; + spin_lock_init(&pr->send_lock); + spin_lock_init(&pr->recv_lock); + spin_lock_init(&pr->xmit_lock); + spin_lock_init(&pr->netif_queue); + + pr->recv_eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0); + if (!pr->recv_eq) { + ehea_error("create_eq failed (recv_eq)"); + goto out_free; + } + + pr->send_eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0); + if (!pr->send_eq) { + ehea_error("create_eq failed (send_eq)"); + goto out_free; + } + + pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq, + pr->recv_eq->fw_handle, + port->logical_port_id); + if (!pr->recv_cq) { + ehea_error("create_cq failed (cq_recv)"); + goto out_free; + } + + pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq, + pr->send_eq->fw_handle, + port->logical_port_id); + if (!pr->send_cq) { + ehea_error("create_cq failed (cq_send)"); + goto out_free; + } + + if (netif_msg_ifup(port)) + ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d", + pr->send_cq->attr.act_nr_of_cqes, + pr->recv_cq->attr.act_nr_of_cqes); + + init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL); + if (!init_attr) { + ret = -ENOMEM; + ehea_error("no mem for ehea_qp_init_attr"); + goto out_free; + } + + init_attr->low_lat_rq1 = 1; + init_attr->signalingtype = 1; /* generate CQE if specified in WQE */ + init_attr->rq_count = 3; + init_attr->qp_token = queue_token; + init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq; + init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1; + init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2; + init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3; + init_attr->wqe_size_enc_sq = EHEA_SG_SQ; + init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1; + init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2; + init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3; + init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD; + init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD; + init_attr->port_nr = port->logical_port_id; + init_attr->send_cq_handle = pr->send_cq->fw_handle; + init_attr->recv_cq_handle = pr->recv_cq->fw_handle; + init_attr->aff_eq_handle = port->qp_eq->fw_handle; + + pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr); + if (!pr->qp) { + ehea_error("create_qp failed"); + ret = -EIO; + goto out_free; + } + + if (netif_msg_ifup(port)) + ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n " + "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr, + init_attr->act_nr_send_wqes, + init_attr->act_nr_rwqes_rq1, + init_attr->act_nr_rwqes_rq2, + init_attr->act_nr_rwqes_rq3); + + ret = ehea_init_q_skba(&pr->sq_skba, init_attr->act_nr_send_wqes + 1); + ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1); + ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1); + ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1); + if (ret) + goto out_free; + + pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10; + if (ehea_gen_smrs(pr) != 0) { + ret = -EIO; + goto out_free; + } + tasklet_init(&pr->send_comp_task, ehea_send_irq_tasklet, + (unsigned long)pr); + atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1); + + kfree(init_attr); + ret = 0; + goto out; + +out_free: + kfree(init_attr); + vfree(pr->sq_skba.arr); + vfree(pr->rq1_skba.arr); + vfree(pr->rq2_skba.arr); + vfree(pr->rq3_skba.arr); + ehea_destroy_qp(pr->qp); + ehea_destroy_cq(pr->send_cq); + ehea_destroy_cq(pr->recv_cq); + ehea_destroy_eq(pr->send_eq); + ehea_destroy_eq(pr->recv_eq); +out: + return ret; +} + +static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr) +{ + int ret, i; + + ret = ehea_destroy_qp(pr->qp); + + if (!ret) { + ehea_destroy_cq(pr->send_cq); + ehea_destroy_cq(pr->recv_cq); + ehea_destroy_eq(pr->send_eq); + ehea_destroy_eq(pr->recv_eq); + + for (i = 0; i < pr->rq1_skba.len; i++) + if (pr->rq1_skba.arr[i]) + dev_kfree_skb(pr->rq1_skba.arr[i]); + + for (i = 0; i < pr->rq2_skba.len; i++) + if (pr->rq2_skba.arr[i]) + dev_kfree_skb(pr->rq2_skba.arr[i]); + + for (i = 0; i < pr->rq3_skba.len; i++) + if (pr->rq3_skba.arr[i]) + dev_kfree_skb(pr->rq3_skba.arr[i]); + + for (i = 0; i < pr->sq_skba.len; i++) + if (pr->sq_skba.arr[i]) + dev_kfree_skb(pr->sq_skba.arr[i]); + + vfree(pr->rq1_skba.arr); + vfree(pr->rq2_skba.arr); + vfree(pr->rq3_skba.arr); + vfree(pr->sq_skba.arr); + ret = ehea_rem_smrs(pr); + } + return ret; +} + +/* + * The write_* functions store information in swqe which is used by + * the hardware to calculate the ip/tcp/udp checksum + */ + +static inline void write_ip_start_end(struct ehea_swqe *swqe, + const struct sk_buff *skb) +{ + swqe->ip_start = (u8)(((u64)skb->nh.iph) - ((u64)skb->data)); + swqe->ip_end = (u8)(swqe->ip_start + skb->nh.iph->ihl * 4 - 1); +} + +static inline void write_tcp_offset_end(struct ehea_swqe *swqe, + const struct sk_buff *skb) +{ + swqe->tcp_offset = + (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check)); + + swqe->tcp_end = (u16)skb->len - 1; +} + +static inline void write_udp_offset_end(struct ehea_swqe *swqe, + const struct sk_buff *skb) +{ + swqe->tcp_offset = + (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check)); + + swqe->tcp_end = (u16)skb->len - 1; +} + + +static void write_swqe2_TSO(struct sk_buff *skb, + struct ehea_swqe *swqe, u32 lkey) +{ + struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry; + u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0]; + int skb_data_size = skb->len - skb->data_len; + int headersize; + u64 tmp_addr; + + /* Packet is TCP with TSO enabled */ + swqe->tx_control |= EHEA_SWQE_TSO; + swqe->mss = skb_shinfo(skb)->gso_size; + /* copy only eth/ip/tcp headers to immediate data and + * the rest of skb->data to sg1entry + */ + headersize = ETH_HLEN + (skb->nh.iph->ihl * 4) + (skb->h.th->doff * 4); + + skb_data_size = skb->len - skb->data_len; + + if (skb_data_size >= headersize) { + /* copy immediate data */ + memcpy(imm_data, skb->data, headersize); + swqe->immediate_data_length = headersize; + + if (skb_data_size > headersize) { + /* set sg1entry data */ + sg1entry->l_key = lkey; + sg1entry->len = skb_data_size - headersize; + + tmp_addr = (u64)(skb->data + headersize); + sg1entry->vaddr = tmp_addr; + swqe->descriptors++; + } + } else + ehea_error("cannot handle fragmented headers"); +} + +static void write_swqe2_nonTSO(struct sk_buff *skb, + struct ehea_swqe *swqe, u32 lkey) +{ + int skb_data_size = skb->len - skb->data_len; + u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0]; + struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry; + u64 tmp_addr; + + /* Packet is any nonTSO type + * + * Copy as much as possible skb->data to immediate data and + * the rest to sg1entry + */ + if (skb_data_size >= SWQE2_MAX_IMM) { + /* copy immediate data */ + memcpy(imm_data, skb->data, SWQE2_MAX_IMM); + + swqe->immediate_data_length = SWQE2_MAX_IMM; + + if (skb_data_size > SWQE2_MAX_IMM) { + /* copy sg1entry data */ + sg1entry->l_key = lkey; + sg1entry->len = skb_data_size - SWQE2_MAX_IMM; + tmp_addr = (u64)(skb->data + SWQE2_MAX_IMM); + sg1entry->vaddr = tmp_addr; + swqe->descriptors++; + } + } else { + memcpy(imm_data, skb->data, skb_data_size); + swqe->immediate_data_length = skb_data_size; + } +} + +static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev, + struct ehea_swqe *swqe, u32 lkey) +{ + struct ehea_vsgentry *sg_list, *sg1entry, *sgentry; + skb_frag_t *frag; + int nfrags, sg1entry_contains_frag_data, i; + u64 tmp_addr; + + nfrags = skb_shinfo(skb)->nr_frags; + sg1entry = &swqe->u.immdata_desc.sg_entry; + sg_list = (struct ehea_vsgentry*)&swqe->u.immdata_desc.sg_list; + swqe->descriptors = 0; + sg1entry_contains_frag_data = 0; + + if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size) + write_swqe2_TSO(skb, swqe, lkey); + else + write_swqe2_nonTSO(skb, swqe, lkey); + + /* write descriptors */ + if (nfrags > 0) { + if (swqe->descriptors == 0) { + /* sg1entry not yet used */ + frag = &skb_shinfo(skb)->frags[0]; + + /* copy sg1entry data */ + sg1entry->l_key = lkey; + sg1entry->len = frag->size; + tmp_addr = (u64)(page_address(frag->page) + + frag->page_offset); + sg1entry->vaddr = tmp_addr; + swqe->descriptors++; + sg1entry_contains_frag_data = 1; + } + + for (i = sg1entry_contains_frag_data; i < nfrags; i++) { + + frag = &skb_shinfo(skb)->frags[i]; + sgentry = &sg_list[i - sg1entry_contains_frag_data]; + + sgentry->l_key = lkey; + sgentry->len = frag->size; + + tmp_addr = (u64)(page_address(frag->page) + + frag->page_offset); + sgentry->vaddr = tmp_addr; + swqe->descriptors++; + } + } +} + +static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid) +{ + int ret = 0; + u64 hret; + u8 reg_type; + + /* De/Register untagged packets */ + reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED; + hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, + port->logical_port_id, + reg_type, port->mac_addr, 0, hcallid); + if (hret != H_SUCCESS) { + ehea_error("reg_dereg_bcmc failed (tagged)"); + ret = -EIO; + goto out_herr; + } + + /* De/Register VLAN packets */ + reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL; + hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, + port->logical_port_id, + reg_type, port->mac_addr, 0, hcallid); + if (hret != H_SUCCESS) { + ehea_error("reg_dereg_bcmc failed (vlan)"); + ret = -EIO; + } +out_herr: + return ret; +} + +static int ehea_set_mac_addr(struct net_device *dev, void *sa) +{ + struct ehea_port *port = netdev_priv(dev); + struct sockaddr *mac_addr = sa; + struct hcp_ehea_port_cb0 *cb0; + int ret; + u64 hret; + + if (!is_valid_ether_addr(mac_addr->sa_data)) { + ret = -EADDRNOTAVAIL; + goto out; + } + + cb0 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL); + if (!cb0) { + ehea_error("no mem for cb0"); + ret = -ENOMEM; + goto out; + } + + memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN); + + cb0->port_mac_addr = cb0->port_mac_addr >> 16; + + hret = ehea_h_modify_ehea_port(port->adapter->handle, + port->logical_port_id, H_PORT_CB0, + EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0); + if (hret != H_SUCCESS) { + ret = -EIO; + goto out_free; + } + + memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len); + + /* Deregister old MAC in pHYP */ + ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC); + if (ret) + goto out_free; + + port->mac_addr = cb0->port_mac_addr << 16; + + /* Register new MAC in pHYP */ + ret = ehea_broadcast_reg_helper(port, H_REG_BCMC); + if (ret) + goto out_free; + + ret = 0; +out_free: + kfree(cb0); +out: + return ret; +} + +static void ehea_promiscuous_error(u64 hret, int enable) +{ + ehea_info("Hypervisor denied %sabling promiscuous mode.%s", + enable == 1 ? "en" : "dis", + hret != H_AUTHORITY ? "" : " Another partition owning a " + "logical port on the same physical port might have altered " + "promiscuous mode first."); +} + +static void ehea_promiscuous(struct net_device *dev, int enable) +{ + struct ehea_port *port = netdev_priv(dev); + struct hcp_ehea_port_cb7 *cb7; + u64 hret; + + if ((enable && port->promisc) || (!enable && !port->promisc)) + return; + + cb7 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL); + if (!cb7) { + ehea_error("no mem for cb7"); + goto out; + } + + /* Modify Pxs_DUCQPN in CB7 */ + cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0; + + hret = ehea_h_modify_ehea_port(port->adapter->handle, + port->logical_port_id, + H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7); + if (hret) { + ehea_promiscuous_error(hret, enable); + goto out; + } + + port->promisc = enable; +out: + kfree(cb7); + return; +} + +static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr, + u32 hcallid) +{ + u64 hret; + u8 reg_type; + + reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST + | EHEA_BCMC_UNTAGGED; + + hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, + port->logical_port_id, + reg_type, mc_mac_addr, 0, hcallid); + if (hret) + goto out; + + reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST + | EHEA_BCMC_VLANID_ALL; + + hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, + port->logical_port_id, + reg_type, mc_mac_addr, 0, hcallid); +out: + return hret; +} + +static int ehea_drop_multicast_list(struct net_device *dev) +{ + struct ehea_port *port = netdev_priv(dev); + struct ehea_mc_list *mc_entry = port->mc_list; + struct list_head *pos; + struct list_head *temp; + int ret = 0; + u64 hret; + + list_for_each_safe(pos, temp, &(port->mc_list->list)) { + mc_entry = list_entry(pos, struct ehea_mc_list, list); + + hret = ehea_multicast_reg_helper(port, mc_entry->macaddr, + H_DEREG_BCMC); + if (hret) { + ehea_error("failed deregistering mcast MAC"); + ret = -EIO; + } + + list_del(pos); + kfree(mc_entry); + } + return ret; +} + +static void ehea_allmulti(struct net_device *dev, int enable) +{ + struct ehea_port *port = netdev_priv(dev); + u64 hret; + + if (!port->allmulti) { + if (enable) { + /* Enable ALLMULTI */ + ehea_drop_multicast_list(dev); + hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC); + if (!hret) + port->allmulti = 1; + else + ehea_error("failed enabling IFF_ALLMULTI"); + } + } else + if (!enable) { + /* Disable ALLMULTI */ + hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC); + if (!hret) + port->allmulti = 0; + else + ehea_error("failed disabling IFF_ALLMULTI"); + } +} + +static void ehea_add_multicast_entry(struct ehea_port* port, u8* mc_mac_addr) +{ + struct ehea_mc_list *ehea_mcl_entry; + u64 hret; + + ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_KERNEL); + if (!ehea_mcl_entry) { + ehea_error("no mem for mcl_entry"); + return; + } + + INIT_LIST_HEAD(&ehea_mcl_entry->list); + + memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN); + + hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr, + H_REG_BCMC); + if (!hret) + list_add(&ehea_mcl_entry->list, &port->mc_list->list); + else { + ehea_error("failed registering mcast MAC"); + kfree(ehea_mcl_entry); + } +} + +static void ehea_set_multicast_list(struct net_device *dev) +{ + struct ehea_port *port = netdev_priv(dev); + struct dev_mc_list *k_mcl_entry; + int ret, i; + + if (dev->flags & IFF_PROMISC) { + ehea_promiscuous(dev, 1); + return; + } + ehea_promiscuous(dev, 0); + + if (dev->flags & IFF_ALLMULTI) { + ehea_allmulti(dev, 1); + return; + } + ehea_allmulti(dev, 0); + + if (dev->mc_count) { + ret = ehea_drop_multicast_list(dev); + if (ret) { + /* Dropping the current multicast list failed. + * Enabling ALL_MULTI is the best we can do. + */ + ehea_allmulti(dev, 1); + } + + if (dev->mc_count > port->adapter->max_mc_mac) { + ehea_info("Mcast registration limit reached (0x%lx). " + "Use ALLMULTI!", + port->adapter->max_mc_mac); + goto out; + } + + for (i = 0, k_mcl_entry = dev->mc_list; + i < dev->mc_count; + i++, k_mcl_entry = k_mcl_entry->next) { + ehea_add_multicast_entry(port, k_mcl_entry->dmi_addr); + } + } +out: + return; +} + +static int ehea_change_mtu(struct net_device *dev, int new_mtu) +{ + if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE)) + return -EINVAL; + dev->mtu = new_mtu; + return 0; +} + +static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev, + struct ehea_swqe *swqe, u32 lkey) +{ + if (skb->protocol == htons(ETH_P_IP)) { + /* IPv4 */ + swqe->tx_control |= EHEA_SWQE_CRC + | EHEA_SWQE_IP_CHECKSUM + | EHEA_SWQE_TCP_CHECKSUM + | EHEA_SWQE_IMM_DATA_PRESENT + | EHEA_SWQE_DESCRIPTORS_PRESENT; + + write_ip_start_end(swqe, skb); + + if (skb->nh.iph->protocol == IPPROTO_UDP) { + if ((skb->nh.iph->frag_off & IP_MF) || + (skb->nh.iph->frag_off & IP_OFFSET)) + /* IP fragment, so don't change cs */ + swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM; + else + write_udp_offset_end(swqe, skb); + + } else if (skb->nh.iph->protocol == IPPROTO_TCP) { + write_tcp_offset_end(swqe, skb); + } + + /* icmp (big data) and ip segmentation packets (all other ip + packets) do not require any special handling */ + + } else { + /* Other Ethernet Protocol */ + swqe->tx_control |= EHEA_SWQE_CRC + | EHEA_SWQE_IMM_DATA_PRESENT + | EHEA_SWQE_DESCRIPTORS_PRESENT; + } + + write_swqe2_data(skb, dev, swqe, lkey); +} + +static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev, + struct ehea_swqe *swqe) +{ + int nfrags = skb_shinfo(skb)->nr_frags; + u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0]; + skb_frag_t *frag; + int i; + + if (skb->protocol == htons(ETH_P_IP)) { + /* IPv4 */ + write_ip_start_end(swqe, skb); + + if (skb->nh.iph->protocol == IPPROTO_TCP) { + swqe->tx_control |= EHEA_SWQE_CRC + | EHEA_SWQE_IP_CHECKSUM + | EHEA_SWQE_TCP_CHECKSUM + | EHEA_SWQE_IMM_DATA_PRESENT; + + write_tcp_offset_end(swqe, skb); + + } else if (skb->nh.iph->protocol == IPPROTO_UDP) { + if ((skb->nh.iph->frag_off & IP_MF) || + (skb->nh.iph->frag_off & IP_OFFSET)) + /* IP fragment, so don't change cs */ + swqe->tx_control |= EHEA_SWQE_CRC + | EHEA_SWQE_IMM_DATA_PRESENT; + else { + swqe->tx_control |= EHEA_SWQE_CRC + | EHEA_SWQE_IP_CHECKSUM + | EHEA_SWQE_TCP_CHECKSUM + | EHEA_SWQE_IMM_DATA_PRESENT; + + write_udp_offset_end(swqe, skb); + } + } else { + /* icmp (big data) and + ip segmentation packets (all other ip packets) */ + swqe->tx_control |= EHEA_SWQE_CRC + | EHEA_SWQE_IP_CHECKSUM + | EHEA_SWQE_IMM_DATA_PRESENT; + } + } else { + /* Other Ethernet Protocol */ + swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT; + } + /* copy (immediate) data */ + if (nfrags == 0) { + /* data is in a single piece */ + memcpy(imm_data, skb->data, skb->len); + } else { + /* first copy data from the skb->data buffer ... */ + memcpy(imm_data, skb->data, skb->len - skb->data_len); + imm_data += skb->len - skb->data_len; + + /* ... then copy data from the fragments */ + for (i = 0; i < nfrags; i++) { + frag = &skb_shinfo(skb)->frags[i]; + memcpy(imm_data, + page_address(frag->page) + frag->page_offset, + frag->size); + imm_data += frag->size; + } + } + swqe->immediate_data_length = skb->len; + dev_kfree_skb(skb); +} + +static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev) +{ + struct ehea_port *port = netdev_priv(dev); + struct ehea_swqe *swqe; + unsigned long flags; + u32 lkey; + int swqe_index; + struct ehea_port_res *pr = &port->port_res[0]; + + spin_lock(&pr->xmit_lock); + + swqe = ehea_get_swqe(pr->qp, &swqe_index); + memset(swqe, 0, SWQE_HEADER_SIZE); + atomic_dec(&pr->swqe_avail); + + if (skb->len <= SWQE3_MAX_IMM) { + u32 sig_iv = port->sig_comp_iv; + u32 swqe_num = pr->swqe_id_counter; + ehea_xmit3(skb, dev, swqe); + swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE) + | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num); + if (pr->swqe_ll_count >= (sig_iv - 1)) { + swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL, + sig_iv); + swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION; + pr->swqe_ll_count = 0; + } else + pr->swqe_ll_count += 1; + } else { + swqe->wr_id = + EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE) + | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter) + | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index); + pr->sq_skba.arr[pr->sq_skba.index] = skb; + + pr->sq_skba.index++; + pr->sq_skba.index &= (pr->sq_skba.len - 1); + + lkey = pr->send_mr.lkey; + ehea_xmit2(skb, dev, swqe, lkey); + + if (pr->swqe_count >= (EHEA_SIG_IV_LONG - 1)) { + swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL, + EHEA_SIG_IV_LONG); + swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION; + pr->swqe_count = 0; + } else + pr->swqe_count += 1; + } + pr->swqe_id_counter += 1; + + if (port->vgrp && vlan_tx_tag_present(skb)) { + swqe->tx_control |= EHEA_SWQE_VLAN_INSERT; + swqe->vlan_tag = vlan_tx_tag_get(skb); + } + + if (netif_msg_tx_queued(port)) { + ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr); + ehea_dump(swqe, sizeof(*swqe), "swqe"); + } + + ehea_post_swqe(pr->qp, swqe); + pr->tx_packets++; + + if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) { + spin_lock_irqsave(&pr->netif_queue, flags); + if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) { + netif_stop_queue(dev); + pr->queue_stopped = 1; + } + spin_unlock_irqrestore(&pr->netif_queue, flags); + } + dev->trans_start = jiffies; + spin_unlock(&pr->xmit_lock); + + return NETDEV_TX_OK; +} + +static void ehea_vlan_rx_register(struct net_device *dev, + struct vlan_group *grp) +{ + struct ehea_port *port = netdev_priv(dev); + struct ehea_adapter *adapter = port->adapter; + struct hcp_ehea_port_cb1 *cb1; + u64 hret; + + port->vgrp = grp; + + cb1 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL); + if (!cb1) { + ehea_error("no mem for cb1"); + goto out; + } + + if (grp) + memset(cb1->vlan_filter, 0, sizeof(cb1->vlan_filter)); + else + memset(cb1->vlan_filter, 0xFF, sizeof(cb1->vlan_filter)); + + hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id, + H_PORT_CB1, H_PORT_CB1_ALL, cb1); + if (hret != H_SUCCESS) + ehea_error("modify_ehea_port failed"); + + kfree(cb1); +out: + return; +} + +static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid) +{ + struct ehea_port *port = netdev_priv(dev); + struct ehea_adapter *adapter = port->adapter; + struct hcp_ehea_port_cb1 *cb1; + int index; + u64 hret; + + cb1 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL); + if (!cb1) { + ehea_error("no mem for cb1"); + goto out; + } + + hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id, + H_PORT_CB1, H_PORT_CB1_ALL, cb1); + if (hret != H_SUCCESS) { + ehea_error("query_ehea_port failed"); + goto out; + } + + index = (vid / 64); + cb1->vlan_filter[index] |= ((u64)(1 << (vid & 0x3F))); + + hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id, + H_PORT_CB1, H_PORT_CB1_ALL, cb1); + if (hret != H_SUCCESS) + ehea_error("modify_ehea_port failed"); +out: + kfree(cb1); + return; +} + +static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid) +{ + struct ehea_port *port = netdev_priv(dev); + struct ehea_adapter *adapter = port->adapter; + struct hcp_ehea_port_cb1 *cb1; + int index; + u64 hret; + + if (port->vgrp) + port->vgrp->vlan_devices[vid] = NULL; + + cb1 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL); + if (!cb1) { + ehea_error("no mem for cb1"); + goto out; + } + + hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id, + H_PORT_CB1, H_PORT_CB1_ALL, cb1); + if (hret != H_SUCCESS) { + ehea_error("query_ehea_port failed"); + goto out; + } + + index = (vid / 64); + cb1->vlan_filter[index] &= ~((u64)(1 << (vid & 0x3F))); + + hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id, + H_PORT_CB1, H_PORT_CB1_ALL, cb1); + if (hret != H_SUCCESS) + ehea_error("modify_ehea_port failed"); +out: + kfree(cb1); + return; +} + +int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp) +{ + int ret = -EIO; + u64 hret; + u16 dummy16 = 0; + u64 dummy64 = 0; + struct hcp_modify_qp_cb0* cb0; + + cb0 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL); + if (!cb0) { + ret = -ENOMEM; + goto out; + } + + hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, + EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); + if (hret != H_SUCCESS) { + ehea_error("query_ehea_qp failed (1)"); + goto out; + } + + cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED; + hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, + EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0, + &dummy64, &dummy64, &dummy16, &dummy16); + if (hret != H_SUCCESS) { + ehea_error("modify_ehea_qp failed (1)"); + goto out; + } + + hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, + EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); + if (hret != H_SUCCESS) { + ehea_error("query_ehea_qp failed (2)"); + goto out; + } + + cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED; + hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, + EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0, + &dummy64, &dummy64, &dummy16, &dummy16); + if (hret != H_SUCCESS) { + ehea_error("modify_ehea_qp failed (2)"); + goto out; + } + + hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, + EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); + if (hret != H_SUCCESS) { + ehea_error("query_ehea_qp failed (3)"); + goto out; + } + + cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND; + hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle, + EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0, + &dummy64, &dummy64, &dummy16, &dummy16); + if (hret != H_SUCCESS) { + ehea_error("modify_ehea_qp failed (3)"); + goto out; + } + + hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle, + EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0); + if (hret != H_SUCCESS) { + ehea_error("query_ehea_qp failed (4)"); + goto out; + } + + ret = 0; +out: + kfree(cb0); + return ret; +} + +static int ehea_port_res_setup(struct ehea_port *port, int def_qps, + int add_tx_qps) +{ + int ret, i; + struct port_res_cfg pr_cfg, pr_cfg_small_rx; + enum ehea_eq_type eq_type = EHEA_EQ; + + port->qp_eq = ehea_create_eq(port->adapter, eq_type, + EHEA_MAX_ENTRIES_EQ, 1); + if (!port->qp_eq) { + ret = -EINVAL; + ehea_error("ehea_create_eq failed (qp_eq)"); + goto out_kill_eq; + } + + pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries; + pr_cfg.max_entries_scq = sq_entries; + pr_cfg.max_entries_sq = sq_entries; + pr_cfg.max_entries_rq1 = rq1_entries; + pr_cfg.max_entries_rq2 = rq2_entries; + pr_cfg.max_entries_rq3 = rq3_entries; + + pr_cfg_small_rx.max_entries_rcq = 1; + pr_cfg_small_rx.max_entries_scq = sq_entries; + pr_cfg_small_rx.max_entries_sq = sq_entries; + pr_cfg_small_rx.max_entries_rq1 = 1; + pr_cfg_small_rx.max_entries_rq2 = 1; + pr_cfg_small_rx.max_entries_rq3 = 1; + + for (i = 0; i < def_qps; i++) { + ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i); + if (ret) + goto out_clean_pr; + } + for (i = def_qps; i < def_qps + add_tx_qps; i++) { + ret = ehea_init_port_res(port, &port->port_res[i], + &pr_cfg_small_rx, i); + if (ret) + goto out_clean_pr; + } + + return 0; + +out_clean_pr: + while (--i >= 0) + ehea_clean_portres(port, &port->port_res[i]); + +out_kill_eq: + ehea_destroy_eq(port->qp_eq); + return ret; +} + +static int ehea_clean_all_portres(struct ehea_port *port) +{ + int ret = 0; + int i; + + for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) + ret |= ehea_clean_portres(port, &port->port_res[i]); + + ret |= ehea_destroy_eq(port->qp_eq); + + return ret; +} + +static int ehea_up(struct net_device *dev) +{ + int ret, i; + struct ehea_port *port = netdev_priv(dev); + u64 mac_addr = 0; + + if (port->state == EHEA_PORT_UP) + return 0; + + ret = ehea_port_res_setup(port, port->num_def_qps, + port->num_add_tx_qps); + if (ret) { + ehea_error("port_res_failed"); + goto out; + } + + /* Set default QP for this port */ + ret = ehea_configure_port(port); + if (ret) { + ehea_error("ehea_configure_port failed. ret:%d", ret); + goto out_clean_pr; + } + + ret = ehea_broadcast_reg_helper(port, H_REG_BCMC); + if (ret) { + ret = -EIO; + ehea_error("out_clean_pr"); + goto out_clean_pr; + } + mac_addr = (*(u64*)dev->dev_addr) >> 16; + + ret = ehea_reg_interrupts(dev); + if (ret) { + ehea_error("out_dereg_bc"); + goto out_dereg_bc; + } + + for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { + ret = ehea_activate_qp(port->adapter, port->port_res[i].qp); + if (ret) { + ehea_error("activate_qp failed"); + goto out_free_irqs; + } + } + + for(i = 0; i < port->num_def_qps; i++) { + ret = ehea_fill_port_res(&port->port_res[i]); + if (ret) { + ehea_error("out_free_irqs"); + goto out_free_irqs; + } + } + + ret = 0; + port->state = EHEA_PORT_UP; + goto out; + +out_free_irqs: + ehea_free_interrupts(dev); + +out_dereg_bc: + ehea_broadcast_reg_helper(port, H_DEREG_BCMC); + +out_clean_pr: + ehea_clean_all_portres(port); +out: + return ret; +} + +static int ehea_open(struct net_device *dev) +{ + int ret; + struct ehea_port *port = netdev_priv(dev); + + down(&port->port_lock); + + if (netif_msg_ifup(port)) + ehea_info("enabling port %s", dev->name); + + ret = ehea_up(dev); + if (!ret) + netif_start_queue(dev); + + up(&port->port_lock); + + return ret; +} + +static int ehea_down(struct net_device *dev) +{ + int ret, i; + struct ehea_port *port = netdev_priv(dev); + + if (port->state == EHEA_PORT_DOWN) + return 0; + + ehea_drop_multicast_list(dev); + ehea_free_interrupts(dev); + + for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) + tasklet_kill(&port->port_res[i].send_comp_task); + + ehea_broadcast_reg_helper(port, H_DEREG_BCMC); + ret = ehea_clean_all_portres(port); + port->state = EHEA_PORT_DOWN; + return ret; +} + +static int ehea_stop(struct net_device *dev) +{ + int ret; + struct ehea_port *port = netdev_priv(dev); + + if (netif_msg_ifdown(port)) + ehea_info("disabling port %s", dev->name); + + flush_workqueue(port->adapter->ehea_wq); + down(&port->port_lock); + netif_stop_queue(dev); + ret = ehea_down(dev); + up(&port->port_lock); + return ret; +} + +static void ehea_reset_port(void *data) +{ + int ret; + struct net_device *dev = data; + struct ehea_port *port = netdev_priv(dev); + + port->resets++; + down(&port->port_lock); + netif_stop_queue(dev); + netif_poll_disable(dev); + + ret = ehea_down(dev); + if (ret) + ehea_error("ehea_down failed. not all resources are freed"); + + ret = ehea_up(dev); + if (ret) { + ehea_error("Reset device %s failed: ret=%d", dev->name, ret); + goto out; + } + + if (netif_msg_timer(port)) + ehea_info("Device %s resetted successfully", dev->name); + + netif_poll_enable(dev); + netif_wake_queue(dev); +out: + up(&port->port_lock); + return; +} + +static void ehea_tx_watchdog(struct net_device *dev) +{ + struct ehea_port *port = netdev_priv(dev); + + if (netif_carrier_ok(dev)) + queue_work(port->adapter->ehea_wq, &port->reset_task); +} + +int ehea_sense_adapter_attr(struct ehea_adapter *adapter) +{ + struct hcp_query_ehea *cb; + u64 hret; + int ret; + + cb = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL); + if (!cb) { + ret = -ENOMEM; + goto out; + } + + hret = ehea_h_query_ehea(adapter->handle, cb); + + if (hret != H_SUCCESS) { + ret = -EIO; + goto out_herr; + } + + adapter->num_ports = cb->num_ports; + adapter->max_mc_mac = cb->max_mc_mac - 1; + ret = 0; + +out_herr: + kfree(cb); +out: + return ret; +} + +static int ehea_setup_single_port(struct ehea_port *port, + struct device_node *dn) +{ + int ret; + u64 hret; + struct net_device *dev = port->netdev; + struct ehea_adapter *adapter = port->adapter; + struct hcp_ehea_port_cb4 *cb4; + u32 *dn_log_port_id; + + sema_init(&port->port_lock, 1); + port->state = EHEA_PORT_DOWN; + port->sig_comp_iv = sq_entries / 10; + + if (!dn) { + ehea_error("bad device node: dn=%p", dn); + ret = -EINVAL; + goto out; + } + + port->of_dev_node = dn; + + /* Determine logical port id */ + dn_log_port_id = (u32*)get_property(dn, "ibm,hea-port-no", NULL); + + if (!dn_log_port_id) { + ehea_error("bad device node: dn_log_port_id=%p", + dn_log_port_id); + ret = -EINVAL; + goto out; + } + port->logical_port_id = *dn_log_port_id; + + port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL); + if (!port->mc_list) { + ret = -ENOMEM; + goto out; + } + + INIT_LIST_HEAD(&port->mc_list->list); + + ehea_set_portspeed(port, EHEA_SPEED_AUTONEG); + + ret = ehea_sense_port_attr(port); + if (ret) + goto out; + + /* Enable Jumbo frames */ + cb4 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL); + if (!cb4) { + ehea_error("no mem for cb4"); + } else { + cb4->jumbo_frame = 1; + hret = ehea_h_modify_ehea_port(adapter->handle, + port->logical_port_id, + H_PORT_CB4, H_PORT_CB4_JUMBO, + cb4); + if (hret != H_SUCCESS) { + ehea_info("Jumbo frames not activated"); + } + kfree(cb4); + } + + /* initialize net_device structure */ + SET_MODULE_OWNER(dev); + + memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN); + + dev->open = ehea_open; + dev->poll = ehea_poll; + dev->weight = 64; + dev->stop = ehea_stop; + dev->hard_start_xmit = ehea_start_xmit; + dev->get_stats = ehea_get_stats; + dev->set_multicast_list = ehea_set_multicast_list; + dev->set_mac_address = ehea_set_mac_addr; + dev->change_mtu = ehea_change_mtu; + dev->vlan_rx_register = ehea_vlan_rx_register; + dev->vlan_rx_add_vid = ehea_vlan_rx_add_vid; + dev->vlan_rx_kill_vid = ehea_vlan_rx_kill_vid; + dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO + | NETIF_F_HIGHDMA | NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_TX + | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER + | NETIF_F_LLTX; + dev->tx_timeout = &ehea_tx_watchdog; + dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT; + + INIT_WORK(&port->reset_task, ehea_reset_port, dev); + + ehea_set_ethtool_ops(dev); + + ret = register_netdev(dev); + if (ret) { + ehea_error("register_netdev failed. ret=%d", ret); + goto out_free; + } + + port->netdev = dev; + ret = 0; + goto out; + +out_free: + kfree(port->mc_list); +out: + return ret; +} + +static int ehea_setup_ports(struct ehea_adapter *adapter) +{ + int ret; + int port_setup_ok = 0; + struct ehea_port *port; + struct device_node *dn = NULL; + struct net_device *dev; + int i; + + /* get port properties for all ports */ + for (i = 0; i < adapter->num_ports; i++) { + + if (adapter->port[i]) + continue; /* port already up and running */ + + /* allocate memory for the port structures */ + dev = alloc_etherdev(sizeof(struct ehea_port)); + + if (!dev) { + ehea_error("no mem for net_device"); + break; + } + + port = netdev_priv(dev); + port->adapter = adapter; + port->netdev = dev; + adapter->port[i] = port; + port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT); + + dn = of_find_node_by_name(dn, "ethernet"); + ret = ehea_setup_single_port(port, dn); + if (ret) { + /* Free mem for this port struct. The others will be + processed on rollback */ + free_netdev(dev); + adapter->port[i] = NULL; + ehea_error("eHEA port %d setup failed, ret=%d", i, ret); + } + } + + of_node_put(dn); + + /* Check for succesfully set up ports */ + for (i = 0; i < adapter->num_ports; i++) + if (adapter->port[i]) + port_setup_ok++; + + if (port_setup_ok) + ret = 0; /* At least some ports are setup correctly */ + else + ret = -EINVAL; + + return ret; +} + +static int __devinit ehea_probe(struct ibmebus_dev *dev, + const struct of_device_id *id) +{ + struct ehea_adapter *adapter; + u64 *adapter_handle; + int ret; + + adapter = kzalloc(sizeof(*adapter), GFP_KERNEL); + if (!adapter) { + ret = -ENOMEM; + dev_err(&dev->ofdev.dev, "no mem for ehea_adapter\n"); + goto out; + } + + adapter_handle = (u64*)get_property(dev->ofdev.node, "ibm,hea-handle", + NULL); + if (!adapter_handle) { + dev_err(&dev->ofdev.dev, "failed getting handle for adapter" + " '%s'\n", dev->ofdev.node->full_name); + ret = -ENODEV; + goto out_free_ad; + } + + adapter->handle = *adapter_handle; + adapter->pd = EHEA_PD_ID; + + dev->ofdev.dev.driver_data = adapter; + + ret = ehea_reg_mr_adapter(adapter); + if (ret) { + dev_err(&dev->ofdev.dev, "reg_mr_adapter failed\n"); + goto out_free_ad; + } + + /* initialize adapter and ports */ + /* get adapter properties */ + ret = ehea_sense_adapter_attr(adapter); + if (ret) { + dev_err(&dev->ofdev.dev, "sense_adapter_attr failed: %d", ret); + goto out_free_res; + } + dev_info(&dev->ofdev.dev, "%d eHEA ports found\n", adapter->num_ports); + + adapter->neq = ehea_create_eq(adapter, + EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1); + if (!adapter->neq) { + dev_err(&dev->ofdev.dev, "NEQ creation failed"); + goto out_free_res; + } + + tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet, + (unsigned long)adapter); + + ret = ibmebus_request_irq(NULL, adapter->neq->attr.ist1, + ehea_interrupt_neq, SA_INTERRUPT, + "ehea_neq", adapter); + if (ret) { + dev_err(&dev->ofdev.dev, "requesting NEQ IRQ failed"); + goto out_kill_eq; + } + + adapter->ehea_wq = create_workqueue("ehea_wq"); + if (!adapter->ehea_wq) + goto out_free_irq; + + ret = ehea_setup_ports(adapter); + if (ret) { + dev_err(&dev->ofdev.dev, "setup_ports failed"); + goto out_kill_wq; + } + + ret = 0; + goto out; + +out_kill_wq: + destroy_workqueue(adapter->ehea_wq); + +out_free_irq: + ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter); + +out_kill_eq: + ehea_destroy_eq(adapter->neq); + +out_free_res: + ehea_h_free_resource(adapter->handle, adapter->mr.handle); + +out_free_ad: + kfree(adapter); +out: + return ret; +} + +static void ehea_shutdown_single_port(struct ehea_port *port) +{ + unregister_netdev(port->netdev); + kfree(port->mc_list); + free_netdev(port->netdev); +} + +static int __devexit ehea_remove(struct ibmebus_dev *dev) +{ + struct ehea_adapter *adapter = dev->ofdev.dev.driver_data; + u64 hret; + int i; + + for (i = 0; i < adapter->num_ports; i++) + if (adapter->port[i]) { + ehea_shutdown_single_port(adapter->port[i]); + adapter->port[i] = NULL; + } + destroy_workqueue(adapter->ehea_wq); + + ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter); + + ehea_destroy_eq(adapter->neq); + + hret = ehea_h_free_resource(adapter->handle, adapter->mr.handle); + if (hret) { + dev_err(&dev->ofdev.dev, "free_resource_mr failed"); + return -EIO; + } + kfree(adapter); + return 0; +} + +static int check_module_parm(void) +{ + int ret = 0; + + if ((rq1_entries < EHEA_MIN_ENTRIES_QP) || + (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) { + ehea_info("Bad parameter: rq1_entries"); + ret = -EINVAL; + } + if ((rq2_entries < EHEA_MIN_ENTRIES_QP) || + (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) { + ehea_info("Bad parameter: rq2_entries"); + ret = -EINVAL; + } + if ((rq3_entries < EHEA_MIN_ENTRIES_QP) || + (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) { + ehea_info("Bad parameter: rq3_entries"); + ret = -EINVAL; + } + if ((sq_entries < EHEA_MIN_ENTRIES_QP) || + (sq_entries > EHEA_MAX_ENTRIES_SQ)) { + ehea_info("Bad parameter: sq_entries"); + ret = -EINVAL; + } + + return ret; +} + +static struct of_device_id ehea_device_table[] = { + { + .name = "lhea", + .compatible = "IBM,lhea", + }, + {}, +}; + +static struct ibmebus_driver ehea_driver = { + .name = "ehea", + .id_table = ehea_device_table, + .probe = ehea_probe, + .remove = ehea_remove, +}; + +int __init ehea_module_init(void) +{ + int ret; + + printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n", + DRV_VERSION); + + ret = check_module_parm(); + if (ret) + goto out; + ret = ibmebus_register_driver(&ehea_driver); + if (ret) + ehea_error("failed registering eHEA device driver on ebus"); + +out: + return ret; +} + +static void __exit ehea_module_exit(void) +{ + ibmebus_unregister_driver(&ehea_driver); +} + +module_init(ehea_module_init); +module_exit(ehea_module_exit); diff --git a/drivers/net/ehea/ehea_phyp.c b/drivers/net/ehea/ehea_phyp.c new file mode 100644 index 0000000..4a85aca --- /dev/null +++ b/drivers/net/ehea/ehea_phyp.c @@ -0,0 +1,705 @@ +/* + * linux/drivers/net/ehea/ehea_phyp.c + * + * eHEA ethernet device driver for IBM eServer System p + * + * (C) Copyright IBM Corp. 2006 + * + * Authors: + * Christoph Raisch <raisch@de.ibm.com> + * Jan-Bernd Themann <themann@de.ibm.com> + * Thomas Klein <tklein@de.ibm.com> + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include "ehea_phyp.h" + + +static inline u16 get_order_of_qentries(u16 queue_entries) +{ + u8 ld = 1; /* logarithmus dualis */ + while (((1U << ld) - 1) < queue_entries) + ld++; + return ld - 1; +} + +/* Defines for H_CALL H_ALLOC_RESOURCE */ +#define H_ALL_RES_TYPE_QP 1 +#define H_ALL_RES_TYPE_CQ 2 +#define H_ALL_RES_TYPE_EQ 3 +#define H_ALL_RES_TYPE_MR 5 +#define H_ALL_RES_TYPE_MW 6 + +static long ehea_hcall_9arg_9ret(unsigned long opcode, + unsigned long arg1, unsigned long arg2, + unsigned long arg3, unsigned long arg4, + unsigned long arg5, unsigned long arg6, + unsigned long arg7, unsigned long arg8, + unsigned long arg9, unsigned long *out1, + unsigned long *out2,unsigned long *out3, + unsigned long *out4,unsigned long *out5, + unsigned long *out6,unsigned long *out7, + unsigned long *out8,unsigned long *out9) +{ + long hret; + int i, sleep_msecs; + + for (i = 0; i < 5; i++) { + hret = plpar_hcall_9arg_9ret(opcode,arg1, arg2, arg3, arg4, + arg5, arg6, arg7, arg8, arg9, out1, + out2, out3, out4, out5, out6, out7, + out8, out9); + if (H_IS_LONG_BUSY(hret)) { + sleep_msecs = get_longbusy_msecs(hret); + msleep_interruptible(sleep_msecs); + continue; + } + + if (hret < H_SUCCESS) + ehea_error("op=%lx hret=%lx " + "i1=%lx i2=%lx i3=%lx i4=%lx i5=%lx i6=%lx " + "i7=%lx i8=%lx i9=%lx " + "o1=%lx o2=%lx o3=%lx o4=%lx o5=%lx o6=%lx " + "o7=%lx o8=%lx o9=%lx", + opcode, hret, arg1, arg2, arg3, arg4, arg5, + arg6, arg7, arg8, arg9, *out1, *out2, *out3, + *out4, *out5, *out6, *out7, *out8, *out9); + return hret; + } + return H_BUSY; +} + +u64 ehea_h_query_ehea_qp(const u64 adapter_handle, const u8 qp_category, + const u64 qp_handle, const u64 sel_mask, void *cb_addr) +{ + u64 dummy; + + if ((((u64)cb_addr) & (PAGE_SIZE - 1)) != 0) { + ehea_error("not on pageboundary"); + return H_PARAMETER; + } + + return ehea_hcall_9arg_9ret(H_QUERY_HEA_QP, + adapter_handle, /* R4 */ + qp_category, /* R5 */ + qp_handle, /* R6 */ + sel_mask, /* R7 */ + virt_to_abs(cb_addr), /* R8 */ + 0, 0, 0, 0, /* R9-R12 */ + &dummy, /* R4 */ + &dummy, /* R5 */ + &dummy, /* R6 */ + &dummy, /* R7 */ + &dummy, /* R8 */ + &dummy, /* R9 */ + &dummy, /* R10 */ + &dummy, /* R11 */ + &dummy); /* R12 */ +} + +/* input param R5 */ +#define H_ALL_RES_QP_EQPO EHEA_BMASK_IBM(9, 11) +#define H_ALL_RES_QP_QPP EHEA_BMASK_IBM(12, 12) +#define H_ALL_RES_QP_RQR EHEA_BMASK_IBM(13, 15) +#define H_ALL_RES_QP_EQEG EHEA_BMASK_IBM(16, 16) +#define H_ALL_RES_QP_LL_QP EHEA_BMASK_IBM(17, 17) +#define H_ALL_RES_QP_DMA128 EHEA_BMASK_IBM(19, 19) +#define H_ALL_RES_QP_HSM EHEA_BMASK_IBM(20, 21) +#define H_ALL_RES_QP_SIGT EHEA_BMASK_IBM(22, 23) +#define H_ALL_RES_QP_TENURE EHEA_BMASK_IBM(48, 55) +#define H_ALL_RES_QP_RES_TYP EHEA_BMASK_IBM(56, 63) + +/* input param R9 */ +#define H_ALL_RES_QP_TOKEN EHEA_BMASK_IBM(0, 31) +#define H_ALL_RES_QP_PD EHEA_BMASK_IBM(32,63) + +/* input param R10 */ +#define H_ALL_RES_QP_MAX_SWQE EHEA_BMASK_IBM(4, 7) +#define H_ALL_RES_QP_MAX_R1WQE EHEA_BMASK_IBM(12, 15) +#define H_ALL_RES_QP_MAX_R2WQE EHEA_BMASK_IBM(20, 23) +#define H_ALL_RES_QP_MAX_R3WQE EHEA_BMASK_IBM(28, 31) +/* Max Send Scatter Gather Elements */ +#define H_ALL_RES_QP_MAX_SSGE EHEA_BMASK_IBM(37, 39) +#define H_ALL_RES_QP_MAX_R1SGE EHEA_BMASK_IBM(45, 47) +/* Max Receive SG Elements RQ1 */ +#define H_ALL_RES_QP_MAX_R2SGE EHEA_BMASK_IBM(53, 55) +#define H_ALL_RES_QP_MAX_R3SGE EHEA_BMASK_IBM(61, 63) + +/* input param R11 */ +#define H_ALL_RES_QP_SWQE_IDL EHEA_BMASK_IBM(0, 7) +/* max swqe immediate data length */ +#define H_ALL_RES_QP_PORT_NUM EHEA_BMASK_IBM(48, 63) + +/* input param R12 */ +#define H_ALL_RES_QP_TH_RQ2 EHEA_BMASK_IBM(0, 15) +/* Threshold RQ2 */ +#define H_ALL_RES_QP_TH_RQ3 EHEA_BMASK_IBM(16, 31) +/* Threshold RQ3 */ + +/* output param R6 */ +#define H_ALL_RES_QP_ACT_SWQE EHEA_BMASK_IBM(0, 15) +#define H_ALL_RES_QP_ACT_R1WQE EHEA_BMASK_IBM(16, 31) +#define H_ALL_RES_QP_ACT_R2WQE EHEA_BMASK_IBM(32, 47) +#define H_ALL_RES_QP_ACT_R3WQE EHEA_BMASK_IBM(48, 63) + +/* output param, R7 */ +#define H_ALL_RES_QP_ACT_SSGE EHEA_BMASK_IBM(0, 7) +#define H_ALL_RES_QP_ACT_R1SGE EHEA_BMASK_IBM(8, 15) +#define H_ALL_RES_QP_ACT_R2SGE EHEA_BMASK_IBM(16, 23) +#define H_ALL_RES_QP_ACT_R3SGE EHEA_BMASK_IBM(24, 31) +#define H_ALL_RES_QP_ACT_SWQE_IDL EHEA_BMASK_IBM(32, 39) + +/* output param R8,R9 */ +#define H_ALL_RES_QP_SIZE_SQ EHEA_BMASK_IBM(0, 31) +#define H_ALL_RES_QP_SIZE_RQ1 EHEA_BMASK_IBM(32, 63) +#define H_ALL_RES_QP_SIZE_RQ2 EHEA_BMASK_IBM(0, 31) +#define H_ALL_RES_QP_SIZE_RQ3 EHEA_BMASK_IBM(32, 63) + +/* output param R11,R12 */ +#define H_ALL_RES_QP_LIOBN_SQ EHEA_BMASK_IBM(0, 31) +#define H_ALL_RES_QP_LIOBN_RQ1 EHEA_BMASK_IBM(32, 63) +#define H_ALL_RES_QP_LIOBN_RQ2 EHEA_BMASK_IBM(0, 31) +#define H_ALL_RES_QP_LIOBN_RQ3 EHEA_BMASK_IBM(32, 63) + +u64 ehea_h_alloc_resource_qp(const u64 adapter_handle, + struct ehea_qp_init_attr *init_attr, const u32 pd, + u64 *qp_handle, struct h_epas *h_epas) +{ + u64 hret; + + u64 allocate_controls = + EHEA_BMASK_SET(H_ALL_RES_QP_EQPO, init_attr->low_lat_rq1 ? 1 : 0) + | EHEA_BMASK_SET(H_ALL_RES_QP_QPP, 0) + | EHEA_BMASK_SET(H_ALL_RES_QP_RQR, 6) /* rq1 & rq2 & rq3 */ + | EHEA_BMASK_SET(H_ALL_RES_QP_EQEG, 0) /* EQE gen. disabled */ + | EHEA_BMASK_SET(H_ALL_RES_QP_LL_QP, init_attr->low_lat_rq1) + | EHEA_BMASK_SET(H_ALL_RES_QP_DMA128, 0) + | EHEA_BMASK_SET(H_ALL_RES_QP_HSM, 0) + | EHEA_BMASK_SET(H_ALL_RES_QP_SIGT, init_attr->signalingtype) + | EHEA_BMASK_SET(H_ALL_RES_QP_RES_TYP, H_ALL_RES_TYPE_QP); + + u64 r9_reg = EHEA_BMASK_SET(H_ALL_RES_QP_PD, pd) + | EHEA_BMASK_SET(H_ALL_RES_QP_TOKEN, init_attr->qp_token); + + u64 max_r10_reg = + EHEA_BMASK_SET(H_ALL_RES_QP_MAX_SWQE, + get_order_of_qentries(init_attr->max_nr_send_wqes)) + | EHEA_BMASK_SET(H_ALL_RES_QP_MAX_R1WQE, + get_order_of_qentries(init_attr->max_nr_rwqes_rq1)) + | EHEA_BMASK_SET(H_ALL_RES_QP_MAX_R2WQE, + get_order_of_qentries(init_attr->max_nr_rwqes_rq2)) + | EHEA_BMASK_SET(H_ALL_RES_QP_MAX_R3WQE, + get_order_of_qentries(init_attr->max_nr_rwqes_rq3)) + | EHEA_BMASK_SET(H_ALL_RES_QP_MAX_SSGE, init_attr->wqe_size_enc_sq) + | EHEA_BMASK_SET(H_ALL_RES_QP_MAX_R1SGE, + init_attr->wqe_size_enc_rq1) + | EHEA_BMASK_SET(H_ALL_RES_QP_MAX_R2SGE, + init_attr->wqe_size_enc_rq2) + | EHEA_BMASK_SET(H_ALL_RES_QP_MAX_R3SGE, + init_attr->wqe_size_enc_rq3); + + u64 r11_in = + EHEA_BMASK_SET(H_ALL_RES_QP_SWQE_IDL, init_attr->swqe_imm_data_len) + | EHEA_BMASK_SET(H_ALL_RES_QP_PORT_NUM, init_attr->port_nr); + u64 threshold = + EHEA_BMASK_SET(H_ALL_RES_QP_TH_RQ2, init_attr->rq2_threshold) + | EHEA_BMASK_SET(H_ALL_RES_QP_TH_RQ3, init_attr->rq3_threshold); + + u64 r5_out = 0; + u64 r6_out = 0; + u64 r7_out = 0; + u64 r8_out = 0; + u64 r9_out = 0; + u64 g_la_user_out = 0; + u64 r11_out = 0; + u64 r12_out = 0; + + hret = ehea_hcall_9arg_9ret(H_ALLOC_HEA_RESOURCE, + adapter_handle, /* R4 */ + allocate_controls, /* R5 */ + init_attr->send_cq_handle, /* R6 */ + init_attr->recv_cq_handle, /* R7 */ + init_attr->aff_eq_handle, /* R8 */ + r9_reg, /* R9 */ + max_r10_reg, /* R10 */ + r11_in, /* R11 */ + threshold, /* R12 */ + qp_handle, /* R4 */ + &r5_out, /* R5 */ + &r6_out, /* R6 */ + &r7_out, /* R7 */ + &r8_out, /* R8 */ + &r9_out, /* R9 */ + &g_la_user_out, /* R10 */ + &r11_out, /* R11 */ + &r12_out); /* R12 */ + + init_attr->qp_nr = (u32)r5_out; + + init_attr->act_nr_send_wqes = + (u16)EHEA_BMASK_GET(H_ALL_RES_QP_ACT_SWQE, r6_out); + init_attr->act_nr_rwqes_rq1 = + (u16)EHEA_BMASK_GET(H_ALL_RES_QP_ACT_R1WQE, r6_out); + init_attr->act_nr_rwqes_rq2 = + (u16)EHEA_BMASK_GET(H_ALL_RES_QP_ACT_R2WQE, r6_out); + init_attr->act_nr_rwqes_rq3 = + (u16)EHEA_BMASK_GET(H_ALL_RES_QP_ACT_R3WQE, r6_out); + + init_attr->act_wqe_size_enc_sq = init_attr->wqe_size_enc_sq; + init_attr->act_wqe_size_enc_rq1 = init_attr->wqe_size_enc_rq1; + init_attr->act_wqe_size_enc_rq2 = init_attr->wqe_size_enc_rq2; + init_attr->act_wqe_size_enc_rq3 = init_attr->wqe_size_enc_rq3; + + init_attr->nr_sq_pages = + (u32)EHEA_BMASK_GET(H_ALL_RES_QP_SIZE_SQ, r8_out); + init_attr->nr_rq1_pages = + (u32)EHEA_BMASK_GET(H_ALL_RES_QP_SIZE_RQ1, r8_out); + init_attr->nr_rq2_pages = + (u32)EHEA_BMASK_GET(H_ALL_RES_QP_SIZE_RQ2, r9_out); + init_attr->nr_rq3_pages = + (u32)EHEA_BMASK_GET(H_ALL_RES_QP_SIZE_RQ3, r9_out); + + init_attr->liobn_sq = + (u32)EHEA_BMASK_GET(H_ALL_RES_QP_LIOBN_SQ, r11_out); + init_attr->liobn_rq1 = + (u32)EHEA_BMASK_GET(H_ALL_RES_QP_LIOBN_RQ1, r11_out); + init_attr->liobn_rq2 = + (u32)EHEA_BMASK_GET(H_ALL_RES_QP_LIOBN_RQ2, r12_out); + init_attr->liobn_rq3 = + (u32)EHEA_BMASK_GET(H_ALL_RES_QP_LIOBN_RQ3, r12_out); + + if (!hret) + hcp_epas_ctor(h_epas, g_la_user_out, g_la_user_out); + + return hret; +} + +u64 ehea_h_alloc_resource_cq(const u64 adapter_handle, + struct ehea_cq_attr *cq_attr, + u64 *cq_handle, struct h_epas *epas) +{ + u64 hret, dummy, act_nr_of_cqes_out, act_pages_out; + u64 g_la_privileged_out, g_la_user_out; + + hret = ehea_hcall_9arg_9ret(H_ALLOC_HEA_RESOURCE, + adapter_handle, /* R4 */ + H_ALL_RES_TYPE_CQ, /* R5 */ + cq_attr->eq_handle, /* R6 */ + cq_attr->cq_token, /* R7 */ + cq_attr->max_nr_of_cqes, /* R8 */ + 0, 0, 0, 0, /* R9-R12 */ + cq_handle, /* R4 */ + &dummy, /* R5 */ + &dummy, /* R6 */ + &act_nr_of_cqes_out, /* R7 */ + &act_pages_out, /* R8 */ + &g_la_privileged_out, /* R9 */ + &g_la_user_out, /* R10 */ + &dummy, /* R11 */ + &dummy); /* R12 */ + + cq_attr->act_nr_of_cqes = act_nr_of_cqes_out; + cq_attr->nr_pages = act_pages_out; + + if (!hret) + hcp_epas_ctor(epas, g_la_privileged_out, g_la_user_out); + + return hret; +} + +/* Defines for H_CALL H_ALLOC_RESOURCE */ +#define H_ALL_RES_TYPE_QP 1 +#define H_ALL_RES_TYPE_CQ 2 +#define H_ALL_RES_TYPE_EQ 3 +#define H_ALL_RES_TYPE_MR 5 +#define H_ALL_RES_TYPE_MW 6 + +/* input param R5 */ +#define H_ALL_RES_EQ_NEQ EHEA_BMASK_IBM(0, 0) +#define H_ALL_RES_EQ_NON_NEQ_ISN EHEA_BMASK_IBM(6, 7) +#define H_ALL_RES_EQ_INH_EQE_GEN EHEA_BMASK_IBM(16, 16) +#define H_ALL_RES_EQ_RES_TYPE EHEA_BMASK_IBM(56, 63) +/* input param R6 */ +#define H_ALL_RES_EQ_MAX_EQE EHEA_BMASK_IBM(32, 63) + +/* output param R6 */ +#define H_ALL_RES_EQ_LIOBN EHEA_BMASK_IBM(32, 63) + +/* output param R7 */ +#define H_ALL_RES_EQ_ACT_EQE EHEA_BMASK_IBM(32, 63) + +/* output param R8 */ +#define H_ALL_RES_EQ_ACT_PS EHEA_BMASK_IBM(32, 63) + +/* output param R9 */ +#define H_ALL_RES_EQ_ACT_EQ_IST_C EHEA_BMASK_IBM(30, 31) +#define H_ALL_RES_EQ_ACT_EQ_IST_1 EHEA_BMASK_IBM(40, 63) + +/* output param R10 */ +#define H_ALL_RES_EQ_ACT_EQ_IST_2 EHEA_BMASK_IBM(40, 63) + +/* output param R11 */ +#define H_ALL_RES_EQ_ACT_EQ_IST_3 EHEA_BMASK_IBM(40, 63) + +/* output param R12 */ +#define H_ALL_RES_EQ_ACT_EQ_IST_4 EHEA_BMASK_IBM(40, 63) + +u64 ehea_h_alloc_resource_eq(const u64 adapter_handle, + struct ehea_eq_attr *eq_attr, u64 *eq_handle) +{ + u64 hret, dummy, eq_liobn, allocate_controls; + u64 ist1_out, ist2_out, ist3_out, ist4_out; + u64 act_nr_of_eqes_out, act_pages_out; + + /* resource type */ + allocate_controls = + EHEA_BMASK_SET(H_ALL_RES_EQ_RES_TYPE, H_ALL_RES_TYPE_EQ) + | EHEA_BMASK_SET(H_ALL_RES_EQ_NEQ, eq_attr->type ? 1 : 0) + | EHEA_BMASK_SET(H_ALL_RES_EQ_INH_EQE_GEN, !eq_attr->eqe_gen) + | EHEA_BMASK_SET(H_ALL_RES_EQ_NON_NEQ_ISN, 1); + + hret = ehea_hcall_9arg_9ret(H_ALLOC_HEA_RESOURCE, + adapter_handle, /* R4 */ + allocate_controls, /* R5 */ + eq_attr->max_nr_of_eqes, /* R6 */ + 0, 0, 0, 0, 0, 0, /* R7-R10 */ + eq_handle, /* R4 */ + &dummy, /* R5 */ + &eq_liobn, /* R6 */ + &act_nr_of_eqes_out, /* R7 */ + &act_pages_out, /* R8 */ + &ist1_out, /* R9 */ + &ist2_out, /* R10 */ + &ist3_out, /* R11 */ + &ist4_out); /* R12 */ + + eq_attr->act_nr_of_eqes = act_nr_of_eqes_out; + eq_attr->nr_pages = act_pages_out; + eq_attr->ist1 = ist1_out; + eq_attr->ist2 = ist2_out; + eq_attr->ist3 = ist3_out; + eq_attr->ist4 = ist4_out; + + return hret; +} + +u64 ehea_h_modify_ehea_qp(const u64 adapter_handle, const u8 cat, + const u64 qp_handle, const u64 sel_mask, + void *cb_addr, u64 *inv_attr_id, u64 *proc_mask, + u16 *out_swr, u16 *out_rwr) +{ + u64 hret, dummy, act_out_swr, act_out_rwr; + + if ((((u64)cb_addr) & (PAGE_SIZE - 1)) != 0) { + ehea_error("not on page boundary"); + return H_PARAMETER; + } + + hret = ehea_hcall_9arg_9ret(H_MODIFY_HEA_QP, + adapter_handle, /* R4 */ + (u64) cat, /* R5 */ + qp_handle, /* R6 */ + sel_mask, /* R7 */ + virt_to_abs(cb_addr), /* R8 */ + 0, 0, 0, 0, /* R9-R12 */ + inv_attr_id, /* R4 */ + &dummy, /* R5 */ + &dummy, /* R6 */ + &act_out_swr, /* R7 */ + &act_out_rwr, /* R8 */ + proc_mask, /* R9 */ + &dummy, /* R10 */ + &dummy, /* R11 */ + &dummy); /* R12 */ + *out_swr = act_out_swr; + *out_rwr = act_out_rwr; + + return hret; +} + +u64 ehea_h_register_rpage(const u64 adapter_handle, const u8 pagesize, + const u8 queue_type, const u64 resource_handle, + const u64 log_pageaddr, u64 count) +{ + u64 dummy, reg_control; + + reg_control = EHEA_BMASK_SET(H_REG_RPAGE_PAGE_SIZE, pagesize) + | EHEA_BMASK_SET(H_REG_RPAGE_QT, queue_type); + + return ehea_hcall_9arg_9ret(H_REGISTER_HEA_RPAGES, + adapter_handle, /* R4 */ + reg_control, /* R5 */ + resource_handle, /* R6 */ + log_pageaddr, /* R7 */ + count, /* R8 */ + 0, 0, 0, 0, /* R9-R12 */ + &dummy, /* R4 */ + &dummy, /* R5 */ + &dummy, /* R6 */ + &dummy, /* R7 */ + &dummy, /* R8 */ + &dummy, /* R9 */ + &dummy, /* R10 */ + &dummy, /* R11 */ + &dummy); /* R12 */ +} + +u64 ehea_h_register_smr(const u64 adapter_handle, const u64 orig_mr_handle, + const u64 vaddr_in, const u32 access_ctrl, const u32 pd, + struct ehea_mr *mr) +{ + u64 hret, dummy, lkey_out; + + hret = ehea_hcall_9arg_9ret(H_REGISTER_SMR, + adapter_handle , /* R4 */ + orig_mr_handle, /* R5 */ + vaddr_in, /* R6 */ + (((u64)access_ctrl) << 32ULL), /* R7 */ + pd, /* R8 */ + 0, 0, 0, 0, /* R9-R12 */ + &mr->handle, /* R4 */ + &dummy, /* R5 */ + &lkey_out, /* R6 */ + &dummy, /* R7 */ + &dummy, /* R8 */ + &dummy, /* R9 */ + &dummy, /* R10 */ + &dummy, /* R11 */ + &dummy); /* R12 */ + mr->lkey = (u32)lkey_out; + + return hret; +} + +u64 ehea_h_disable_and_get_hea(const u64 adapter_handle, const u64 qp_handle) +{ + u64 hret, dummy, ladr_next_sq_wqe_out; + u64 ladr_next_rq1_wqe_out, ladr_next_rq2_wqe_out, ladr_next_rq3_wqe_out; + + hret = ehea_hcall_9arg_9ret(H_DISABLE_AND_GET_HEA, + adapter_handle, /* R4 */ + H_DISABLE_GET_EHEA_WQE_P, /* R5 */ + qp_handle, /* R6 */ + 0, 0, 0, 0, 0, 0, /* R7-R12 */ + &ladr_next_sq_wqe_out, /* R4 */ + &ladr_next_rq1_wqe_out, /* R5 */ + &ladr_next_rq2_wqe_out, /* R6 */ + &ladr_next_rq3_wqe_out, /* R7 */ + &dummy, /* R8 */ + &dummy, /* R9 */ + &dummy, /* R10 */ + &dummy, /* R11 */ + &dummy); /* R12 */ + return hret; +} + +u64 ehea_h_free_resource(const u64 adapter_handle, const u64 res_handle) +{ + u64 dummy; + + return ehea_hcall_9arg_9ret(H_FREE_RESOURCE, + adapter_handle, /* R4 */ + res_handle, /* R5 */ + 0, 0, 0, 0, 0, 0, 0, /* R6-R12 */ + &dummy, /* R4 */ + &dummy, /* R5 */ + &dummy, /* R6 */ + &dummy, /* R7 */ + &dummy, /* R8 */ + &dummy, /* R9 */ + &dummy, /* R10 */ + &dummy, /* R11 */ + &dummy); /* R12 */ +} + +u64 ehea_h_alloc_resource_mr(const u64 adapter_handle, const u64 vaddr, + const u64 length, const u32 access_ctrl, + const u32 pd, u64 *mr_handle, u32 *lkey) +{ + u64 hret, dummy, lkey_out; + + hret = ehea_hcall_9arg_9ret(H_ALLOC_HEA_RESOURCE, + adapter_handle, /* R4 */ + 5, /* R5 */ + vaddr, /* R6 */ + length, /* R7 */ + (((u64) access_ctrl) << 32ULL),/* R8 */ + pd, /* R9 */ + 0, 0, 0, /* R10-R12 */ + mr_handle, /* R4 */ + &dummy, /* R5 */ + &lkey_out, /* R6 */ + &dummy, /* R7 */ + &dummy, /* R8 */ + &dummy, /* R9 */ + &dummy, /* R10 */ + &dummy, /* R11 */ + &dummy); /* R12 */ + *lkey = (u32) lkey_out; + + return hret; +} + +u64 ehea_h_register_rpage_mr(const u64 adapter_handle, const u64 mr_handle, + const u8 pagesize, const u8 queue_type, + const u64 log_pageaddr, const u64 count) +{ + if ((count > 1) && (log_pageaddr & 0xfff)) { + ehea_error("not on pageboundary"); + return H_PARAMETER; + } + + return ehea_h_register_rpage(adapter_handle, pagesize, + queue_type, mr_handle, + log_pageaddr, count); +} + +u64 ehea_h_query_ehea(const u64 adapter_handle, void *cb_addr) +{ + u64 hret, dummy, cb_logaddr; + + cb_logaddr = virt_to_abs(cb_addr); + + hret = ehea_hcall_9arg_9ret(H_QUERY_HEA, + adapter_handle, /* R4 */ + cb_logaddr, /* R5 */ + 0, 0, 0, 0, 0, 0, 0, /* R6-R12 */ + &dummy, /* R4 */ + &dummy, /* R5 */ + &dummy, /* R6 */ + &dummy, /* R7 */ + &dummy, /* R8 */ + &dummy, /* R9 */ + &dummy, /* R10 */ + &dummy, /* R11 */ + &dummy); /* R12 */ +#ifdef DEBUG + ehea_dmp(cb_addr, sizeof(struct hcp_query_ehea), "hcp_query_ehea"); +#endif + return hret; +} + +u64 ehea_h_query_ehea_port(const u64 adapter_handle, const u16 port_num, + const u8 cb_cat, const u64 select_mask, + void *cb_addr) +{ + u64 port_info, dummy; + u64 cb_logaddr = virt_to_abs(cb_addr); + u64 arr_index = 0; + + port_info = EHEA_BMASK_SET(H_MEHEAPORT_CAT, cb_cat) + | EHEA_BMASK_SET(H_MEHEAPORT_PN, port_num); + + return ehea_hcall_9arg_9ret(H_QUERY_HEA_PORT, + adapter_handle, /* R4 */ + port_info, /* R5 */ + select_mask, /* R6 */ + arr_index, /* R7 */ + cb_logaddr, /* R8 */ + 0, 0, 0, 0, /* R9-R12 */ + &dummy, /* R4 */ + &dummy, /* R5 */ + &dummy, /* R6 */ + &dummy, /* R7 */ + &dummy, /* R8 */ + &dummy, /* R9 */ + &dummy, /* R10 */ + &dummy, /* R11 */ + &dummy); /* R12 */ +} + +u64 ehea_h_modify_ehea_port(const u64 adapter_handle, const u16 port_num, + const u8 cb_cat, const u64 select_mask, + void *cb_addr) +{ + u64 port_info, dummy, inv_attr_ident, proc_mask; + u64 arr_index = 0; + u64 cb_logaddr = virt_to_abs(cb_addr); + + port_info = EHEA_BMASK_SET(H_MEHEAPORT_CAT, cb_cat) + | EHEA_BMASK_SET(H_MEHEAPORT_PN, port_num); +#ifdef DEBUG + ehea_dump(cb_addr, sizeof(struct hcp_ehea_port_cb0), "Before HCALL"); +#endif + return ehea_hcall_9arg_9ret(H_MODIFY_HEA_PORT, + adapter_handle, /* R4 */ + port_info, /* R5 */ + select_mask, /* R6 */ + arr_index, /* R7 */ + cb_logaddr, /* R8 */ + 0, 0, 0, 0, /* R9-R12 */ + &inv_attr_ident, /* R4 */ + &proc_mask, /* R5 */ + &dummy, /* R6 */ + &dummy, /* R7 */ + &dummy, /* R8 */ + &dummy, /* R9 */ + &dummy, /* R10 */ + &dummy, /* R11 */ + &dummy); /* R12 */ +} + +u64 ehea_h_reg_dereg_bcmc(const u64 adapter_handle, const u16 port_num, + const u8 reg_type, const u64 mc_mac_addr, + const u16 vlan_id, const u32 hcall_id) +{ + u64 r5_port_num, r6_reg_type, r7_mc_mac_addr, r8_vlan_id, dummy; + u64 mac_addr = mc_mac_addr >> 16; + + r5_port_num = EHEA_BMASK_SET(H_REGBCMC_PN, port_num); + r6_reg_type = EHEA_BMASK_SET(H_REGBCMC_REGTYPE, reg_type); + r7_mc_mac_addr = EHEA_BMASK_SET(H_REGBCMC_MACADDR, mac_addr); + r8_vlan_id = EHEA_BMASK_SET(H_REGBCMC_VLANID, vlan_id); + + return ehea_hcall_9arg_9ret(hcall_id, + adapter_handle, /* R4 */ + r5_port_num, /* R5 */ + r6_reg_type, /* R6 */ + r7_mc_mac_addr, /* R7 */ + r8_vlan_id, /* R8 */ + 0, 0, 0, 0, /* R9-R12 */ + &dummy, /* R4 */ + &dummy, /* R5 */ + &dummy, /* R6 */ + &dummy, /* R7 */ + &dummy, /* R8 */ + &dummy, /* R9 */ + &dummy, /* R10 */ + &dummy, /* R11 */ + &dummy); /* R12 */ +} + +u64 ehea_h_reset_events(const u64 adapter_handle, const u64 neq_handle, + const u64 event_mask) +{ + u64 dummy; + + return ehea_hcall_9arg_9ret(H_RESET_EVENTS, + adapter_handle, /* R4 */ + neq_handle, /* R5 */ + event_mask, /* R6 */ + 0, 0, 0, 0, 0, 0, /* R7-R12 */ + &dummy, /* R4 */ + &dummy, /* R5 */ + &dummy, /* R6 */ + &dummy, /* R7 */ + &dummy, /* R8 */ + &dummy, /* R9 */ + &dummy, /* R10 */ + &dummy, /* R11 */ + &dummy); /* R12 */ +} diff --git a/drivers/net/ehea/ehea_phyp.h b/drivers/net/ehea/ehea_phyp.h new file mode 100644 index 0000000..fa51e3b --- /dev/null +++ b/drivers/net/ehea/ehea_phyp.h @@ -0,0 +1,455 @@ +/* + * linux/drivers/net/ehea/ehea_phyp.h + * + * 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. + */ + +#ifndef __EHEA_PHYP_H__ +#define __EHEA_PHYP_H__ + +#include <linux/delay.h> +#include <asm/hvcall.h> +#include "ehea.h" +#include "ehea_hw.h" +#include "ehea_hcall.h" + +/* Some abbreviations used here: + * + * hcp_* - structures, variables and functions releated to Hypervisor Calls + */ + +static inline u32 get_longbusy_msecs(int long_busy_ret_code) +{ + switch (long_busy_ret_code) { + case H_LONG_BUSY_ORDER_1_MSEC: + return 1; + case H_LONG_BUSY_ORDER_10_MSEC: + return 10; + case H_LONG_BUSY_ORDER_100_MSEC: + return 100; + case H_LONG_BUSY_ORDER_1_SEC: + return 1000; + case H_LONG_BUSY_ORDER_10_SEC: + return 10000; + case H_LONG_BUSY_ORDER_100_SEC: + return 100000; + default: + return 1; + } +} + +/* Notification Event Queue (NEQ) Entry bit masks */ +#define NEQE_EVENT_CODE EHEA_BMASK_IBM(2, 7) +#define NEQE_PORTNUM EHEA_BMASK_IBM(32, 47) +#define NEQE_PORT_UP EHEA_BMASK_IBM(16, 16) +#define NEQE_EXTSWITCH_PORT_UP EHEA_BMASK_IBM(17, 17) +#define NEQE_EXTSWITCH_PRIMARY EHEA_BMASK_IBM(18, 18) +#define NEQE_PLID EHEA_BMASK_IBM(16, 47) + +/* Notification Event Codes */ +#define EHEA_EC_PORTSTATE_CHG 0x30 +#define EHEA_EC_ADAPTER_MALFUNC 0x32 +#define EHEA_EC_PORT_MALFUNC 0x33 + +/* Notification Event Log Register (NELR) bit masks */ +#define NELR_PORT_MALFUNC EHEA_BMASK_IBM(61, 61) +#define NELR_ADAPTER_MALFUNC EHEA_BMASK_IBM(62, 62) +#define NELR_PORTSTATE_CHG EHEA_BMASK_IBM(63, 63) + +static inline void hcp_epas_ctor(struct h_epas *epas, u64 paddr_kernel, + u64 paddr_user) +{ + epas->kernel.addr = ioremap(paddr_kernel, PAGE_SIZE); + epas->user.addr = paddr_user; +} + +static inline void hcp_epas_dtor(struct h_epas *epas) +{ + if (epas->kernel.addr) + iounmap(epas->kernel.addr); + + epas->user.addr = 0; + epas->kernel.addr = 0; +} + +struct hcp_modify_qp_cb0 { + u64 qp_ctl_reg; /* 00 */ + u32 max_swqe; /* 02 */ + u32 max_rwqe; /* 03 */ + u32 port_nb; /* 04 */ + u32 reserved0; /* 05 */ + u64 qp_aer; /* 06 */ + u64 qp_tenure; /* 08 */ +}; + +/* Hcall Query/Modify Queue Pair Control Block 0 Selection Mask Bits */ +#define H_QPCB0_ALL EHEA_BMASK_IBM(0, 5) +#define H_QPCB0_QP_CTL_REG EHEA_BMASK_IBM(0, 0) +#define H_QPCB0_MAX_SWQE EHEA_BMASK_IBM(1, 1) +#define H_QPCB0_MAX_RWQE EHEA_BMASK_IBM(2, 2) +#define H_QPCB0_PORT_NB EHEA_BMASK_IBM(3, 3) +#define H_QPCB0_QP_AER EHEA_BMASK_IBM(4, 4) +#define H_QPCB0_QP_TENURE EHEA_BMASK_IBM(5, 5) + +/* Queue Pair Control Register Status Bits */ +#define H_QP_CR_ENABLED 0x8000000000000000ULL /* QP enabled */ + /* QP States: */ +#define H_QP_CR_STATE_RESET 0x0000010000000000ULL /* Reset */ +#define H_QP_CR_STATE_INITIALIZED 0x0000020000000000ULL /* Initialized */ +#define H_QP_CR_STATE_RDY2RCV 0x0000030000000000ULL /* Ready to recv */ +#define H_QP_CR_STATE_RDY2SND 0x0000050000000000ULL /* Ready to send */ +#define H_QP_CR_STATE_ERROR 0x0000800000000000ULL /* Error */ + +struct hcp_modify_qp_cb1 { + u32 qpn; /* 00 */ + u32 qp_asyn_ev_eq_nb; /* 01 */ + u64 sq_cq_handle; /* 02 */ + u64 rq_cq_handle; /* 04 */ + /* sgel = scatter gather element */ + u32 sgel_nb_sq; /* 06 */ + u32 sgel_nb_rq1; /* 07 */ + u32 sgel_nb_rq2; /* 08 */ + u32 sgel_nb_rq3; /* 09 */ +}; + +/* Hcall Query/Modify Queue Pair Control Block 1 Selection Mask Bits */ +#define H_QPCB1_ALL EHEA_BMASK_IBM(0, 7) +#define H_QPCB1_QPN EHEA_BMASK_IBM(0, 0) +#define H_QPCB1_ASYN_EV_EQ_NB EHEA_BMASK_IBM(1, 1) +#define H_QPCB1_SQ_CQ_HANDLE EHEA_BMASK_IBM(2, 2) +#define H_QPCB1_RQ_CQ_HANDLE EHEA_BMASK_IBM(3, 3) +#define H_QPCB1_SGEL_NB_SQ EHEA_BMASK_IBM(4, 4) +#define H_QPCB1_SGEL_NB_RQ1 EHEA_BMASK_IBM(5, 5) +#define H_QPCB1_SGEL_NB_RQ2 EHEA_BMASK_IBM(6, 6) +#define H_QPCB1_SGEL_NB_RQ3 EHEA_BMASK_IBM(7, 7) + +struct hcp_query_ehea { + u32 cur_num_qps; /* 00 */ + u32 cur_num_cqs; /* 01 */ + u32 cur_num_eqs; /* 02 */ + u32 cur_num_mrs; /* 03 */ + u32 auth_level; /* 04 */ + u32 max_num_qps; /* 05 */ + u32 max_num_cqs; /* 06 */ + u32 max_num_eqs; /* 07 */ + u32 max_num_mrs; /* 08 */ + u32 reserved0; /* 09 */ + u32 int_clock_freq; /* 10 */ + u32 max_num_pds; /* 11 */ + u32 max_num_addr_handles; /* 12 */ + u32 max_num_cqes; /* 13 */ + u32 max_num_wqes; /* 14 */ + u32 max_num_sgel_rq1wqe; /* 15 */ + u32 max_num_sgel_rq2wqe; /* 16 */ + u32 max_num_sgel_rq3wqe; /* 17 */ + u32 mr_page_size; /* 18 */ + u32 reserved1; /* 19 */ + u64 max_mr_size; /* 20 */ + u64 reserved2; /* 22 */ + u32 num_ports; /* 24 */ + u32 reserved3; /* 25 */ + u32 reserved4; /* 26 */ + u32 reserved5; /* 27 */ + u64 max_mc_mac; /* 28 */ + u64 ehea_cap; /* 30 */ + u32 max_isn_per_eq; /* 32 */ + u32 max_num_neq; /* 33 */ + u64 max_num_vlan_ids; /* 34 */ + u32 max_num_port_group; /* 36 */ + u32 max_num_phys_port; /* 37 */ + +}; + +/* Hcall Query/Modify Port Control Block defines */ +#define H_PORT_CB0 0 +#define H_PORT_CB1 1 +#define H_PORT_CB2 2 +#define H_PORT_CB3 3 +#define H_PORT_CB4 4 +#define H_PORT_CB5 5 +#define H_PORT_CB6 6 +#define H_PORT_CB7 7 + +struct hcp_ehea_port_cb0 { + u64 port_mac_addr; + u64 port_rc; + u64 reserved0; + u32 port_op_state; + u32 port_speed; + u32 ext_swport_op_state; + u32 neg_tpf_prpf; + u32 num_default_qps; + u32 reserved1; + u64 default_qpn_arr[16]; +}; + +/* Hcall Query/Modify Port Control Block 0 Selection Mask Bits */ +#define H_PORT_CB0_ALL EHEA_BMASK_IBM(0, 7) /* Set all bits */ +#define H_PORT_CB0_MAC EHEA_BMASK_IBM(0, 0) /* MAC address */ +#define H_PORT_CB0_PRC EHEA_BMASK_IBM(1, 1) /* Port Recv Control */ +#define H_PORT_CB0_DEFQPNARRAY EHEA_BMASK_IBM(7, 7) /* Default QPN Array */ + +/* Hcall Query Port: Returned port speed values */ +#define H_SPEED_10M_H 1 /* 10 Mbps, Half Duplex */ +#define H_SPEED_10M_F 2 /* 10 Mbps, Full Duplex */ +#define H_SPEED_100M_H 3 /* 100 Mbps, Half Duplex */ +#define H_SPEED_100M_F 4 /* 100 Mbps, Full Duplex */ +#define H_SPEED_1G_F 6 /* 1 Gbps, Full Duplex */ +#define H_SPEED_10G_F 8 /* 10 Gbps, Full Duplex */ + +/* Port Receive Control Status Bits */ +#define PXLY_RC_VALID EHEA_BMASK_IBM(49, 49) +#define PXLY_RC_VLAN_XTRACT EHEA_BMASK_IBM(50, 50) +#define PXLY_RC_TCP_6_TUPLE EHEA_BMASK_IBM(51, 51) +#define PXLY_RC_UDP_6_TUPLE EHEA_BMASK_IBM(52, 52) +#define PXLY_RC_TCP_3_TUPLE EHEA_BMASK_IBM(53, 53) +#define PXLY_RC_TCP_2_TUPLE EHEA_BMASK_IBM(54, 54) +#define PXLY_RC_LLC_SNAP EHEA_BMASK_IBM(55, 55) +#define PXLY_RC_JUMBO_FRAME EHEA_BMASK_IBM(56, 56) +#define PXLY_RC_FRAG_IP_PKT EHEA_BMASK_IBM(57, 57) +#define PXLY_RC_TCP_UDP_CHKSUM EHEA_BMASK_IBM(58, 58) +#define PXLY_RC_IP_CHKSUM EHEA_BMASK_IBM(59, 59) +#define PXLY_RC_MAC_FILTER EHEA_BMASK_IBM(60, 60) +#define PXLY_RC_UNTAG_FILTER EHEA_BMASK_IBM(61, 61) +#define PXLY_RC_VLAN_TAG_FILTER EHEA_BMASK_IBM(62, 63) + +#define PXLY_RC_VLAN_FILTER 2 +#define PXLY_RC_VLAN_PERM 0 + + +#define H_PORT_CB1_ALL 0x8000000000000000ULL + +struct hcp_ehea_port_cb1 { + u64 vlan_filter[64]; +}; + +#define H_PORT_CB2_ALL 0xFFE0000000000000ULL + +struct hcp_ehea_port_cb2 { + u64 rxo; + u64 rxucp; + u64 rxufd; + u64 rxuerr; + u64 rxftl; + u64 rxmcp; + u64 rxbcp; + u64 txo; + u64 txucp; + u64 txmcp; + u64 txbcp; +}; + +struct hcp_ehea_port_cb3 { + u64 vlan_bc_filter[64]; + u64 vlan_mc_filter[64]; + u64 vlan_un_filter[64]; + u64 port_mac_hash_array[64]; +}; + +#define H_PORT_CB4_ALL 0xF000000000000000ULL +#define H_PORT_CB4_JUMBO 0x1000000000000000ULL +#define H_PORT_CB4_SPEED 0x8000000000000000ULL + +struct hcp_ehea_port_cb4 { + u32 port_speed; + u32 pause_frame; + u32 ens_port_op_state; + u32 jumbo_frame; + u32 ens_port_wrap; +}; + +/* Hcall Query/Modify Port Control Block 5 Selection Mask Bits */ +#define H_PORT_CB5_RCU 0x0001000000000000ULL +#define PXS_RCU EHEA_BMASK_IBM(61, 63) + +struct hcp_ehea_port_cb5 { + u64 prc; /* 00 */ + u64 uaa; /* 01 */ + u64 macvc; /* 02 */ + u64 xpcsc; /* 03 */ + u64 xpcsp; /* 04 */ + u64 pcsid; /* 05 */ + u64 xpcsst; /* 06 */ + u64 pthlb; /* 07 */ + u64 pthrb; /* 08 */ + u64 pqu; /* 09 */ + u64 pqd; /* 10 */ + u64 prt; /* 11 */ + u64 wsth; /* 12 */ + u64 rcb; /* 13 */ + u64 rcm; /* 14 */ + u64 rcu; /* 15 */ + u64 macc; /* 16 */ + u64 pc; /* 17 */ + u64 pst; /* 18 */ + u64 ducqpn; /* 19 */ + u64 mcqpn; /* 20 */ + u64 mma; /* 21 */ + u64 pmc0h; /* 22 */ + u64 pmc0l; /* 23 */ + u64 lbc; /* 24 */ +}; + +#define H_PORT_CB6_ALL 0xFFFFFE7FFFFF8000ULL + +struct hcp_ehea_port_cb6 { + u64 rxo; /* 00 */ + u64 rx64; /* 01 */ + u64 rx65; /* 02 */ + u64 rx128; /* 03 */ + u64 rx256; /* 04 */ + u64 rx512; /* 05 */ + u64 rx1024; /* 06 */ + u64 rxbfcs; /* 07 */ + u64 rxime; /* 08 */ + u64 rxrle; /* 09 */ + u64 rxorle; /* 10 */ + u64 rxftl; /* 11 */ + u64 rxjab; /* 12 */ + u64 rxse; /* 13 */ + u64 rxce; /* 14 */ + u64 rxrf; /* 15 */ + u64 rxfrag; /* 16 */ + u64 rxuoc; /* 17 */ + u64 rxcpf; /* 18 */ + u64 rxsb; /* 19 */ + u64 rxfd; /* 20 */ + u64 rxoerr; /* 21 */ + u64 rxaln; /* 22 */ + u64 ducqpn; /* 23 */ + u64 reserved0; /* 24 */ + u64 rxmcp; /* 25 */ + u64 rxbcp; /* 26 */ + u64 txmcp; /* 27 */ + u64 txbcp; /* 28 */ + u64 txo; /* 29 */ + u64 tx64; /* 30 */ + u64 tx65; /* 31 */ + u64 tx128; /* 32 */ + u64 tx256; /* 33 */ + u64 tx512; /* 34 */ + u64 tx1024; /* 35 */ + u64 txbfcs; /* 36 */ + u64 txcpf; /* 37 */ + u64 txlf; /* 38 */ + u64 txrf; /* 39 */ + u64 txime; /* 40 */ + u64 txsc; /* 41 */ + u64 txmc; /* 42 */ + u64 txsqe; /* 43 */ + u64 txdef; /* 44 */ + u64 txlcol; /* 45 */ + u64 txexcol; /* 46 */ + u64 txcse; /* 47 */ + u64 txbor; /* 48 */ +}; + +#define H_PORT_CB7_DUCQPN 0x8000000000000000ULL + +struct hcp_ehea_port_cb7 { + u64 def_uc_qpn; +}; + +u64 ehea_h_query_ehea_qp(const u64 adapter_handle, + const u8 qp_category, + const u64 qp_handle, const u64 sel_mask, + void *cb_addr); + +u64 ehea_h_modify_ehea_qp(const u64 adapter_handle, + const u8 cat, + const u64 qp_handle, + const u64 sel_mask, + void *cb_addr, + u64 * inv_attr_id, + u64 * proc_mask, u16 * out_swr, u16 * out_rwr); + +u64 ehea_h_alloc_resource_eq(const u64 adapter_handle, + struct ehea_eq_attr *eq_attr, u64 * eq_handle); + +u64 ehea_h_alloc_resource_cq(const u64 adapter_handle, + struct ehea_cq_attr *cq_attr, + u64 * cq_handle, struct h_epas *epas); + +u64 ehea_h_alloc_resource_qp(const u64 adapter_handle, + struct ehea_qp_init_attr *init_attr, + const u32 pd, + u64 * qp_handle, struct h_epas *h_epas); + +#define H_REG_RPAGE_PAGE_SIZE EHEA_BMASK_IBM(48,55) +#define H_REG_RPAGE_QT EHEA_BMASK_IBM(62,63) + +u64 ehea_h_register_rpage(const u64 adapter_handle, + const u8 pagesize, + const u8 queue_type, + const u64 resource_handle, + const u64 log_pageaddr, u64 count); + +#define H_DISABLE_GET_EHEA_WQE_P 1 +#define H_DISABLE_GET_SQ_WQE_P 2 +#define H_DISABLE_GET_RQC 3 + +u64 ehea_h_disable_and_get_hea(const u64 adapter_handle, const u64 qp_handle); + +u64 ehea_h_free_resource(const u64 adapter_handle, const u64 res_handle); + +u64 ehea_h_alloc_resource_mr(const u64 adapter_handle, const u64 vaddr, + const u64 length, const u32 access_ctrl, + const u32 pd, u64 * mr_handle, u32 * lkey); + +u64 ehea_h_register_rpage_mr(const u64 adapter_handle, const u64 mr_handle, + const u8 pagesize, const u8 queue_type, + const u64 log_pageaddr, const u64 count); + +u64 ehea_h_register_smr(const u64 adapter_handle, const u64 orig_mr_handle, + const u64 vaddr_in, const u32 access_ctrl, const u32 pd, + struct ehea_mr *mr); + +u64 ehea_h_query_ehea(const u64 adapter_handle, void *cb_addr); + +/* output param R5 */ +#define H_MEHEAPORT_CAT EHEA_BMASK_IBM(40,47) +#define H_MEHEAPORT_PN EHEA_BMASK_IBM(48,63) + +u64 ehea_h_query_ehea_port(const u64 adapter_handle, const u16 port_num, + const u8 cb_cat, const u64 select_mask, + void *cb_addr); + +u64 ehea_h_modify_ehea_port(const u64 adapter_handle, const u16 port_num, + const u8 cb_cat, const u64 select_mask, + void *cb_addr); + +#define H_REGBCMC_PN EHEA_BMASK_IBM(48, 63) +#define H_REGBCMC_REGTYPE EHEA_BMASK_IBM(61, 63) +#define H_REGBCMC_MACADDR EHEA_BMASK_IBM(16, 63) +#define H_REGBCMC_VLANID EHEA_BMASK_IBM(52, 63) + +u64 ehea_h_reg_dereg_bcmc(const u64 adapter_handle, const u16 port_num, + const u8 reg_type, const u64 mc_mac_addr, + const u16 vlan_id, const u32 hcall_id); + +u64 ehea_h_reset_events(const u64 adapter_handle, const u64 neq_handle, + const u64 event_mask); + +#endif /* __EHEA_PHYP_H__ */ diff --git a/drivers/net/ehea/ehea_qmr.c b/drivers/net/ehea/ehea_qmr.c new file mode 100644 index 0000000..3e18623 --- /dev/null +++ b/drivers/net/ehea/ehea_qmr.c @@ -0,0 +1,582 @@ +/* + * linux/drivers/net/ehea/ehea_qmr.c + * + * eHEA ethernet device driver for IBM eServer System p + * + * (C) Copyright IBM Corp. 2006 + * + * Authors: + * Christoph Raisch <raisch@de.ibm.com> + * Jan-Bernd Themann <themann@de.ibm.com> + * Thomas Klein <tklein@de.ibm.com> + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include "ehea.h" +#include "ehea_phyp.h" +#include "ehea_qmr.h" + +static void *hw_qpageit_get_inc(struct hw_queue *queue) +{ + void *retvalue = hw_qeit_get(queue); + + queue->current_q_offset += queue->pagesize; + if (queue->current_q_offset > queue->queue_length) { + queue->current_q_offset -= queue->pagesize; + retvalue = NULL; + } else if (((u64) retvalue) & (EHEA_PAGESIZE-1)) { + ehea_error("not on pageboundary"); + retvalue = NULL; + } + return retvalue; +} + +static int hw_queue_ctor(struct hw_queue *queue, const u32 nr_of_pages, + const u32 pagesize, const u32 qe_size) +{ + int pages_per_kpage = PAGE_SIZE / pagesize; + int i, k; + + if ((pagesize > PAGE_SIZE) || (!pages_per_kpage)) { + ehea_error("pagesize conflict! kernel pagesize=%d, " + "ehea pagesize=%d", (int)PAGE_SIZE, (int)pagesize); + return -EINVAL; + } + + queue->queue_length = nr_of_pages * pagesize; + queue->queue_pages = kmalloc(nr_of_pages * sizeof(void*), GFP_KERNEL); + if (!queue->queue_pages) { + ehea_error("no mem for queue_pages"); + return -ENOMEM; + } + + /* + * allocate pages for queue: + * outer loop allocates whole kernel pages (page aligned) and + * inner loop divides a kernel page into smaller hea queue pages + */ + i = 0; + while (i < nr_of_pages) { + u8 *kpage = (u8*)get_zeroed_page(GFP_KERNEL); + if (!kpage) + goto out_nomem; + for (k = 0; k < pages_per_kpage && i < nr_of_pages; k++) { + (queue->queue_pages)[i] = (struct ehea_page*)kpage; + kpage += pagesize; + i++; + } + } + + queue->current_q_offset = 0; + queue->qe_size = qe_size; + queue->pagesize = pagesize; + queue->toggle_state = 1; + + return 0; +out_nomem: + for (i = 0; i < nr_of_pages; i += pages_per_kpage) { + if (!(queue->queue_pages)[i]) + break; + free_page((unsigned long)(queue->queue_pages)[i]); + } + return -ENOMEM; +} + +static void hw_queue_dtor(struct hw_queue *queue) +{ + int pages_per_kpage = PAGE_SIZE / queue->pagesize; + int i, nr_pages; + + if (!queue || !queue->queue_pages) + return; + + nr_pages = queue->queue_length / queue->pagesize; + + for (i = 0; i < nr_pages; i += pages_per_kpage) + free_page((unsigned long)(queue->queue_pages)[i]); + + kfree(queue->queue_pages); +} + +struct ehea_cq *ehea_create_cq(struct ehea_adapter *adapter, + int nr_of_cqe, u64 eq_handle, u32 cq_token) +{ + struct ehea_cq *cq; + struct h_epa epa; + u64 *cq_handle_ref, hret, rpage; + u32 act_nr_of_entries, act_pages, counter; + int ret; + void *vpage; + + cq = kzalloc(sizeof(*cq), GFP_KERNEL); + if (!cq) { + ehea_error("no mem for cq"); + goto out_nomem; + } + + cq->attr.max_nr_of_cqes = nr_of_cqe; + cq->attr.cq_token = cq_token; + cq->attr.eq_handle = eq_handle; + + cq->adapter = adapter; + + cq_handle_ref = &cq->fw_handle; + act_nr_of_entries = 0; + act_pages = 0; + + hret = ehea_h_alloc_resource_cq(adapter->handle, &cq->attr, + &cq->fw_handle, &cq->epas); + if (hret != H_SUCCESS) { + ehea_error("alloc_resource_cq failed"); + goto out_freemem; + } + + ret = hw_queue_ctor(&cq->hw_queue, cq->attr.nr_pages, + EHEA_PAGESIZE, sizeof(struct ehea_cqe)); + if (ret) + goto out_freeres; + + for (counter = 0; counter < cq->attr.nr_pages; counter++) { + vpage = hw_qpageit_get_inc(&cq->hw_queue); + if (!vpage) { + ehea_error("hw_qpageit_get_inc failed"); + goto out_kill_hwq; + } + + rpage = virt_to_abs(vpage); + hret = ehea_h_register_rpage(adapter->handle, + 0, EHEA_CQ_REGISTER_ORIG, + cq->fw_handle, rpage, 1); + if (hret < H_SUCCESS) { + ehea_error("register_rpage_cq failed ehea_cq=%p " + "hret=%lx counter=%i act_pages=%i", + cq, hret, counter, cq->attr.nr_pages); + goto out_kill_hwq; + } + + if (counter == (cq->attr.nr_pages - 1)) { + vpage = hw_qpageit_get_inc(&cq->hw_queue); + + if ((hret != H_SUCCESS) || (vpage)) { + ehea_error("registration of pages not " + "complete hret=%lx\n", hret); + goto out_kill_hwq; + } + } else { + if ((hret != H_PAGE_REGISTERED) || (!vpage)) { + ehea_error("CQ: registration of page failed " + "hret=%lx\n", hret); + goto out_kill_hwq; + } + } + } + + hw_qeit_reset(&cq->hw_queue); + epa = cq->epas.kernel; + ehea_reset_cq_ep(cq); + ehea_reset_cq_n1(cq); + + return cq; + +out_kill_hwq: + hw_queue_dtor(&cq->hw_queue); + +out_freeres: + ehea_h_free_resource(adapter->handle, cq->fw_handle); + +out_freemem: + kfree(cq); + +out_nomem: + return NULL; +} + +int ehea_destroy_cq(struct ehea_cq *cq) +{ + u64 adapter_handle, hret; + + adapter_handle = cq->adapter->handle; + + if (!cq) + return 0; + + /* deregister all previous registered pages */ + hret = ehea_h_free_resource(adapter_handle, cq->fw_handle); + if (hret != H_SUCCESS) { + ehea_error("destroy CQ failed"); + return -EIO; + } + + hw_queue_dtor(&cq->hw_queue); + kfree(cq); + + return 0; +} + +struct ehea_eq *ehea_create_eq(struct ehea_adapter *adapter, + const enum ehea_eq_type type, + const u32 max_nr_of_eqes, const u8 eqe_gen) +{ + int ret, i; + u64 hret, rpage; + void *vpage; + struct ehea_eq *eq; + + eq = kzalloc(sizeof(*eq), GFP_KERNEL); + if (!eq) { + ehea_error("no mem for eq"); + return NULL; + } + + eq->adapter = adapter; + eq->attr.type = type; + eq->attr.max_nr_of_eqes = max_nr_of_eqes; + eq->attr.eqe_gen = eqe_gen; + spin_lock_init(&eq->spinlock); + + hret = ehea_h_alloc_resource_eq(adapter->handle, + &eq->attr, &eq->fw_handle); + if (hret != H_SUCCESS) { + ehea_error("alloc_resource_eq failed"); + goto out_freemem; + } + + ret = hw_queue_ctor(&eq->hw_queue, eq->attr.nr_pages, + EHEA_PAGESIZE, sizeof(struct ehea_eqe)); + if (ret) { + ehea_error("can't allocate eq pages"); + goto out_freeres; + } + + for (i = 0; i < eq->attr.nr_pages; i++) { + vpage = hw_qpageit_get_inc(&eq->hw_queue); + if (!vpage) { + ehea_error("hw_qpageit_get_inc failed"); + hret = H_RESOURCE; + goto out_kill_hwq; + } + + rpage = virt_to_abs(vpage); + + hret = ehea_h_register_rpage(adapter->handle, 0, + EHEA_EQ_REGISTER_ORIG, + eq->fw_handle, rpage, 1); + + if (i == (eq->attr.nr_pages - 1)) { + /* last page */ + vpage = hw_qpageit_get_inc(&eq->hw_queue); + if ((hret != H_SUCCESS) || (vpage)) { + goto out_kill_hwq; + } + } else { + if ((hret != H_PAGE_REGISTERED) || (!vpage)) { + goto out_kill_hwq; + } + } + } + + hw_qeit_reset(&eq->hw_queue); + return eq; + +out_kill_hwq: + hw_queue_dtor(&eq->hw_queue); + +out_freeres: + ehea_h_free_resource(adapter->handle, eq->fw_handle); + +out_freemem: + kfree(eq); + return NULL; +} + +struct ehea_eqe *ehea_poll_eq(struct ehea_eq *eq) +{ + struct ehea_eqe *eqe; + unsigned long flags; + + spin_lock_irqsave(&eq->spinlock, flags); + eqe = (struct ehea_eqe*)hw_eqit_eq_get_inc_valid(&eq->hw_queue); + spin_unlock_irqrestore(&eq->spinlock, flags); + + return eqe; +} + +int ehea_destroy_eq(struct ehea_eq *eq) +{ + u64 hret; + unsigned long flags; + + if (!eq) + return 0; + + spin_lock_irqsave(&eq->spinlock, flags); + + hret = ehea_h_free_resource(eq->adapter->handle, eq->fw_handle); + spin_unlock_irqrestore(&eq->spinlock, flags); + + if (hret != H_SUCCESS) { + ehea_error("destroy_eq failed"); + return -EIO; + } + + hw_queue_dtor(&eq->hw_queue); + kfree(eq); + + return 0; +} + +/** + * allocates memory for a queue and registers pages in phyp + */ +int ehea_qp_alloc_register(struct ehea_qp *qp, struct hw_queue *hw_queue, + int nr_pages, int wqe_size, int act_nr_sges, + struct ehea_adapter *adapter, int h_call_q_selector) +{ + u64 hret, rpage; + int ret, cnt; + void *vpage; + + ret = hw_queue_ctor(hw_queue, nr_pages, EHEA_PAGESIZE, wqe_size); + if (ret) + return ret; + + for (cnt = 0; cnt < nr_pages; cnt++) { + vpage = hw_qpageit_get_inc(hw_queue); + if (!vpage) { + ehea_error("hw_qpageit_get_inc failed"); + goto out_kill_hwq; + } + rpage = virt_to_abs(vpage); + hret = ehea_h_register_rpage(adapter->handle, + 0, h_call_q_selector, + qp->fw_handle, rpage, 1); + if (hret < H_SUCCESS) { + ehea_error("register_rpage_qp failed"); + goto out_kill_hwq; + } + } + hw_qeit_reset(hw_queue); + return 0; + +out_kill_hwq: + hw_queue_dtor(hw_queue); + return -EIO; +} + +static inline u32 map_wqe_size(u8 wqe_enc_size) +{ + return 128 << wqe_enc_size; +} + +struct ehea_qp *ehea_create_qp(struct ehea_adapter *adapter, + u32 pd, struct ehea_qp_init_attr *init_attr) +{ + int ret; + u64 hret; + struct ehea_qp *qp; + u32 wqe_size_in_bytes_sq, wqe_size_in_bytes_rq1; + u32 wqe_size_in_bytes_rq2, wqe_size_in_bytes_rq3; + + + qp = kzalloc(sizeof(*qp), GFP_KERNEL); + if (!qp) { + ehea_error("no mem for qp"); + return NULL; + } + + qp->adapter = adapter; + + hret = ehea_h_alloc_resource_qp(adapter->handle, init_attr, pd, + &qp->fw_handle, &qp->epas); + if (hret != H_SUCCESS) { + ehea_error("ehea_h_alloc_resource_qp failed"); + goto out_freemem; + } + + wqe_size_in_bytes_sq = map_wqe_size(init_attr->act_wqe_size_enc_sq); + wqe_size_in_bytes_rq1 = map_wqe_size(init_attr->act_wqe_size_enc_rq1); + wqe_size_in_bytes_rq2 = map_wqe_size(init_attr->act_wqe_size_enc_rq2); + wqe_size_in_bytes_rq3 = map_wqe_size(init_attr->act_wqe_size_enc_rq3); + + ret = ehea_qp_alloc_register(qp, &qp->hw_squeue, init_attr->nr_sq_pages, + wqe_size_in_bytes_sq, + init_attr->act_wqe_size_enc_sq, adapter, + 0); + if (ret) { + ehea_error("can't register for sq ret=%x", ret); + goto out_freeres; + } + + ret = ehea_qp_alloc_register(qp, &qp->hw_rqueue1, + init_attr->nr_rq1_pages, + wqe_size_in_bytes_rq1, + init_attr->act_wqe_size_enc_rq1, + adapter, 1); + if (ret) { + ehea_error("can't register for rq1 ret=%x", ret); + goto out_kill_hwsq; + } + + if (init_attr->rq_count > 1) { + ret = ehea_qp_alloc_register(qp, &qp->hw_rqueue2, + init_attr->nr_rq2_pages, + wqe_size_in_bytes_rq2, + init_attr->act_wqe_size_enc_rq2, + adapter, 2); + if (ret) { + ehea_error("can't register for rq2 ret=%x", ret); + goto out_kill_hwr1q; + } + } + + if (init_attr->rq_count > 2) { + ret = ehea_qp_alloc_register(qp, &qp->hw_rqueue3, + init_attr->nr_rq3_pages, + wqe_size_in_bytes_rq3, + init_attr->act_wqe_size_enc_rq3, + adapter, 3); + if (ret) { + ehea_error("can't register for rq3 ret=%x", ret); + goto out_kill_hwr2q; + } + } + + qp->init_attr = *init_attr; + + return qp; + +out_kill_hwr2q: + hw_queue_dtor(&qp->hw_rqueue2); + +out_kill_hwr1q: + hw_queue_dtor(&qp->hw_rqueue1); + +out_kill_hwsq: + hw_queue_dtor(&qp->hw_squeue); + +out_freeres: + ehea_h_disable_and_get_hea(adapter->handle, qp->fw_handle); + ehea_h_free_resource(adapter->handle, qp->fw_handle); + +out_freemem: + kfree(qp); + return NULL; +} + +int ehea_destroy_qp(struct ehea_qp *qp) +{ + u64 hret; + struct ehea_qp_init_attr *qp_attr = &qp->init_attr; + + if (!qp) + return 0; + + hret = ehea_h_free_resource(qp->adapter->handle, qp->fw_handle); + if (hret != H_SUCCESS) { + ehea_error("destroy_qp failed"); + return -EIO; + } + + hw_queue_dtor(&qp->hw_squeue); + hw_queue_dtor(&qp->hw_rqueue1); + + if (qp_attr->rq_count > 1) + hw_queue_dtor(&qp->hw_rqueue2); + if (qp_attr->rq_count > 2) + hw_queue_dtor(&qp->hw_rqueue3); + kfree(qp); + + return 0; +} + +int ehea_reg_mr_adapter(struct ehea_adapter *adapter) +{ + int i, k, ret; + u64 hret, pt_abs, start, end, nr_pages; + u32 acc_ctrl = EHEA_MR_ACC_CTRL; + u64 *pt; + + start = KERNELBASE; + end = (u64)high_memory; + nr_pages = (end - start) / PAGE_SIZE; + + pt = kzalloc(PAGE_SIZE, GFP_KERNEL); + if (!pt) { + ehea_error("no mem"); + ret = -ENOMEM; + goto out; + } + pt_abs = virt_to_abs(pt); + + hret = ehea_h_alloc_resource_mr(adapter->handle, start, end - start, + acc_ctrl, adapter->pd, + &adapter->mr.handle, &adapter->mr.lkey); + if (hret != H_SUCCESS) { + ehea_error("alloc_resource_mr failed"); + ret = -EIO; + goto out; + } + + adapter->mr.vaddr = KERNELBASE; + k = 0; + + while (nr_pages > 0) { + if (nr_pages > 1) { + u64 num_pages = min(nr_pages, (u64)512); + for (i = 0; i < num_pages; i++) + pt[i] = virt_to_abs((void*)(((u64)start) + + ((k++) * + PAGE_SIZE))); + + hret = ehea_h_register_rpage_mr(adapter->handle, + adapter->mr.handle, 0, + 0, (u64)pt_abs, + num_pages); + nr_pages -= num_pages; + } else { + u64 abs_adr = virt_to_abs((void*)(((u64)start) + + (k * PAGE_SIZE))); + hret = ehea_h_register_rpage_mr(adapter->handle, + adapter->mr.handle, 0, + 0, abs_adr,1); + nr_pages--; + } + + if ((hret != H_SUCCESS) && (hret != H_PAGE_REGISTERED)) { + ehea_h_free_resource(adapter->handle, + adapter->mr.handle); + ehea_error("register_rpage_mr failed: hret = %lX", + hret); + ret = -EIO; + goto out; + } + } + + if (hret != H_SUCCESS) { + ehea_h_free_resource(adapter->handle, adapter->mr.handle); + ehea_error("register_rpage failed for last page: hret = %lX", + hret); + ret = -EIO; + goto out; + } + ret = 0; +out: + kfree(pt); + return ret; +} + + diff --git a/drivers/net/ehea/ehea_qmr.h b/drivers/net/ehea/ehea_qmr.h new file mode 100644 index 0000000..7efdc96 --- /dev/null +++ b/drivers/net/ehea/ehea_qmr.h @@ -0,0 +1,358 @@ +/* + * linux/drivers/net/ehea/ehea_qmr.h + * + * 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. + */ + +#ifndef __EHEA_QMR_H__ +#define __EHEA_QMR_H__ + +#include "ehea.h" +#include "ehea_hw.h" + +/* + * page size of ehea hardware queues + */ + +#define EHEA_PAGESHIFT 12 +#define EHEA_PAGESIZE 4096UL + +/* Some abbreviations used here: + * + * WQE - Work Queue Entry + * SWQE - Send Work Queue Entry + * RWQE - Receive Work Queue Entry + * CQE - Completion Queue Entry + * EQE - Event Queue Entry + * MR - Memory Region + */ + +/* Use of WR_ID field for EHEA */ +#define EHEA_WR_ID_COUNT EHEA_BMASK_IBM(0, 19) +#define EHEA_WR_ID_TYPE EHEA_BMASK_IBM(20, 23) +#define EHEA_SWQE2_TYPE 0x1 +#define EHEA_SWQE3_TYPE 0x2 +#define EHEA_RWQE2_TYPE 0x3 +#define EHEA_RWQE3_TYPE 0x4 +#define EHEA_WR_ID_INDEX EHEA_BMASK_IBM(24, 47) +#define EHEA_WR_ID_REFILL EHEA_BMASK_IBM(48, 63) + +struct ehea_vsgentry { + u64 vaddr; + u32 l_key; + u32 len; +}; + +/* maximum number of sg entries allowed in a WQE */ +#define EHEA_MAX_WQE_SG_ENTRIES 252 +#define SWQE2_MAX_IMM (0xD0 - 0x30) +#define SWQE3_MAX_IMM 224 + +/* tx control flags for swqe */ +#define EHEA_SWQE_CRC 0x8000 +#define EHEA_SWQE_IP_CHECKSUM 0x4000 +#define EHEA_SWQE_TCP_CHECKSUM 0x2000 +#define EHEA_SWQE_TSO 0x1000 +#define EHEA_SWQE_SIGNALLED_COMPLETION 0x0800 +#define EHEA_SWQE_VLAN_INSERT 0x0400 +#define EHEA_SWQE_IMM_DATA_PRESENT 0x0200 +#define EHEA_SWQE_DESCRIPTORS_PRESENT 0x0100 +#define EHEA_SWQE_WRAP_CTL_REC 0x0080 +#define EHEA_SWQE_WRAP_CTL_FORCE 0x0040 +#define EHEA_SWQE_BIND 0x0020 +#define EHEA_SWQE_PURGE 0x0010 + +/* sizeof(struct ehea_swqe) less the union */ +#define SWQE_HEADER_SIZE 32 + +struct ehea_swqe { + u64 wr_id; + u16 tx_control; + u16 vlan_tag; + u8 reserved1; + u8 ip_start; + u8 ip_end; + u8 immediate_data_length; + u8 tcp_offset; + u8 reserved2; + u16 tcp_end; + u8 wrap_tag; + u8 descriptors; /* number of valid descriptors in WQE */ + u16 reserved3; + u16 reserved4; + u16 mss; + u32 reserved5; + union { + /* Send WQE Format 1 */ + struct { + struct ehea_vsgentry sg_list[EHEA_MAX_WQE_SG_ENTRIES]; + } no_immediate_data; + + /* Send WQE Format 2 */ + struct { + struct ehea_vsgentry sg_entry; + /* 0x30 */ + u8 immediate_data[SWQE2_MAX_IMM]; + /* 0xd0 */ + struct ehea_vsgentry sg_list[EHEA_MAX_WQE_SG_ENTRIES-1]; + } immdata_desc __attribute__ ((packed)); + + /* Send WQE Format 3 */ + struct { + u8 immediate_data[SWQE3_MAX_IMM]; + } immdata_nodesc; + } u; +}; + +struct ehea_rwqe { + u64 wr_id; /* work request ID */ + u8 reserved1[5]; + u8 data_segments; + u16 reserved2; + u64 reserved3; + u64 reserved4; + struct ehea_vsgentry sg_list[EHEA_MAX_WQE_SG_ENTRIES]; +}; + +#define EHEA_CQE_VLAN_TAG_XTRACT 0x0400 + +#define EHEA_CQE_TYPE_RQ 0x60 +#define EHEA_CQE_STAT_ERR_MASK 0x721F +#define EHEA_CQE_STAT_FAT_ERR_MASK 0x1F +#define EHEA_CQE_STAT_ERR_TCP 0x4000 + +struct ehea_cqe { + u64 wr_id; /* work request ID from WQE */ + u8 type; + u8 valid; + u16 status; + u16 reserved1; + u16 num_bytes_transfered; + u16 vlan_tag; + u16 inet_checksum_value; + u8 reserved2; + u8 header_length; + u16 reserved3; + u16 page_offset; + u16 wqe_count; + u32 qp_token; + u32 timestamp; + u32 reserved4; + u64 reserved5[3]; +}; + +#define EHEA_EQE_VALID EHEA_BMASK_IBM(0, 0) +#define EHEA_EQE_IS_CQE EHEA_BMASK_IBM(1, 1) +#define EHEA_EQE_IDENTIFIER EHEA_BMASK_IBM(2, 7) +#define EHEA_EQE_QP_CQ_NUMBER EHEA_BMASK_IBM(8, 31) +#define EHEA_EQE_QP_TOKEN EHEA_BMASK_IBM(32, 63) +#define EHEA_EQE_CQ_TOKEN EHEA_BMASK_IBM(32, 63) +#define EHEA_EQE_KEY EHEA_BMASK_IBM(32, 63) +#define EHEA_EQE_PORT_NUMBER EHEA_BMASK_IBM(56, 63) +#define EHEA_EQE_EQ_NUMBER EHEA_BMASK_IBM(48, 63) +#define EHEA_EQE_SM_ID EHEA_BMASK_IBM(48, 63) +#define EHEA_EQE_SM_MECH_NUMBER EHEA_BMASK_IBM(48, 55) +#define EHEA_EQE_SM_PORT_NUMBER EHEA_BMASK_IBM(56, 63) + +struct ehea_eqe { + u64 entry; +}; + +static inline void *hw_qeit_calc(struct hw_queue *queue, u64 q_offset) +{ + struct ehea_page *current_page; + + if (q_offset >= queue->queue_length) + q_offset -= queue->queue_length; + current_page = (queue->queue_pages)[q_offset >> EHEA_PAGESHIFT]; + return ¤t_page->entries[q_offset & (EHEA_PAGESIZE - 1)]; +} + +static inline void *hw_qeit_get(struct hw_queue *queue) +{ + return hw_qeit_calc(queue, queue->current_q_offset); +} + +static inline void hw_qeit_inc(struct hw_queue *queue) +{ + queue->current_q_offset += queue->qe_size; + if (queue->current_q_offset >= queue->queue_length) { + queue->current_q_offset = 0; + /* toggle the valid flag */ + queue->toggle_state = (~queue->toggle_state) & 1; + } +} + +static inline void *hw_qeit_get_inc(struct hw_queue *queue) +{ + void *retvalue = hw_qeit_get(queue); + hw_qeit_inc(queue); + return retvalue; +} + +static inline void *hw_qeit_get_inc_valid(struct hw_queue *queue) +{ + struct ehea_cqe *retvalue = hw_qeit_get(queue); + u8 valid = retvalue->valid; + void *pref; + + if ((valid >> 7) == (queue->toggle_state & 1)) { + /* this is a good one */ + hw_qeit_inc(queue); + pref = hw_qeit_calc(queue, queue->current_q_offset); + prefetch(pref); + prefetch(pref + 128); + } else + retvalue = NULL; + return retvalue; +} + +static inline void *hw_qeit_get_valid(struct hw_queue *queue) +{ + struct ehea_cqe *retvalue = hw_qeit_get(queue); + void *pref; + u8 valid; + + pref = hw_qeit_calc(queue, queue->current_q_offset); + prefetch(pref); + prefetch(pref + 128); + prefetch(pref + 256); + valid = retvalue->valid; + if (!((valid >> 7) == (queue->toggle_state & 1))) + retvalue = NULL; + return retvalue; +} + +static inline void *hw_qeit_reset(struct hw_queue *queue) +{ + queue->current_q_offset = 0; + return hw_qeit_get(queue); +} + +static inline void *hw_qeit_eq_get_inc(struct hw_queue *queue) +{ + u64 last_entry_in_q = queue->queue_length - queue->qe_size; + void *retvalue; + + retvalue = hw_qeit_get(queue); + queue->current_q_offset += queue->qe_size; + if (queue->current_q_offset > last_entry_in_q) { + queue->current_q_offset = 0; + queue->toggle_state = (~queue->toggle_state) & 1; + } + return retvalue; +} + +static inline void *hw_eqit_eq_get_inc_valid(struct hw_queue *queue) +{ + void *retvalue = hw_qeit_get(queue); + u32 qe = *(u8*)retvalue; + if ((qe >> 7) == (queue->toggle_state & 1)) + hw_qeit_eq_get_inc(queue); + else + retvalue = NULL; + return retvalue; +} + +static inline struct ehea_rwqe *ehea_get_next_rwqe(struct ehea_qp *qp, + int rq_nr) +{ + struct hw_queue *queue; + + if (rq_nr == 1) + queue = &qp->hw_rqueue1; + else if (rq_nr == 2) + queue = &qp->hw_rqueue2; + else + queue = &qp->hw_rqueue3; + + return hw_qeit_get_inc(queue); +} + +static inline struct ehea_swqe *ehea_get_swqe(struct ehea_qp *my_qp, + int *wqe_index) +{ + struct hw_queue *queue = &my_qp->hw_squeue; + struct ehea_swqe *wqe_p; + + *wqe_index = (queue->current_q_offset) >> (7 + EHEA_SG_SQ); + wqe_p = hw_qeit_get_inc(&my_qp->hw_squeue); + + return wqe_p; +} + +static inline void ehea_post_swqe(struct ehea_qp *my_qp, struct ehea_swqe *swqe) +{ + iosync(); + ehea_update_sqa(my_qp, 1); +} + +static inline struct ehea_cqe *ehea_poll_rq1(struct ehea_qp *qp, int *wqe_index) +{ + struct hw_queue *queue = &qp->hw_rqueue1; + + *wqe_index = (queue->current_q_offset) >> (7 + EHEA_SG_RQ1); + return hw_qeit_get_valid(queue); +} + +static inline void ehea_inc_rq1(struct ehea_qp *qp) +{ + hw_qeit_inc(&qp->hw_rqueue1); +} + +static inline struct ehea_cqe *ehea_poll_cq(struct ehea_cq *my_cq) +{ + return hw_qeit_get_inc_valid(&my_cq->hw_queue); +} + +#define EHEA_CQ_REGISTER_ORIG 0 +#define EHEA_EQ_REGISTER_ORIG 0 + +enum ehea_eq_type { + EHEA_EQ = 0, /* event queue */ + EHEA_NEQ /* notification event queue */ +}; + +struct ehea_eq *ehea_create_eq(struct ehea_adapter *adapter, + enum ehea_eq_type type, + const u32 length, const u8 eqe_gen); + +int ehea_destroy_eq(struct ehea_eq *eq); + +struct ehea_eqe *ehea_poll_eq(struct ehea_eq *eq); + +struct ehea_cq *ehea_create_cq(struct ehea_adapter *adapter, int cqe, + u64 eq_handle, u32 cq_token); + +int ehea_destroy_cq(struct ehea_cq *cq); + +struct ehea_qp *ehea_create_qp(struct ehea_adapter * adapter, u32 pd, + struct ehea_qp_init_attr *init_attr); + +int ehea_destroy_qp(struct ehea_qp *qp); + +int ehea_reg_mr_adapter(struct ehea_adapter *adapter); + +#endif /* __EHEA_QMR_H__ */ |