1 files changed, 504 insertions, 0 deletions

diff --git a/drivers/net/ehea/ehea.h b/drivers/net/ehea/ehea.h
new file mode 100644
index 00000000000..7dd5e6a0d99
--- /dev/null
+++ b/drivers/net/ehea/ehea.h
@@ -0,0 +1,504 @@
+/*
+ *  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 <linux/inet_lro.h>
+
+#include <asm/ibmebus.h>
+#include <asm/abs_addr.h>
+#include <asm/io.h>
+
+#define DRV_NAME        "ehea"
+#define DRV_VERSION     "EHEA_0107"
+
+/* eHEA capability flags */
+#define DLPAR_PORT_ADD_REM 1
+#define DLPAR_MEM_ADD      2
+#define DLPAR_MEM_REM      4
+#define EHEA_CAPABILITIES  (DLPAR_PORT_ADD_REM | DLPAR_MEM_ADD | DLPAR_MEM_REM)
+
+#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_SMALL_QUEUES
+#define EHEA_NUM_TX_QP 1
+#define EHEA_LRO_MAX_AGGR 64
+
+#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      4080
+#define EHEA_DEF_ENTRIES_SQ     4080
+#define EHEA_DEF_ENTRIES_RQ1    8160
+#define EHEA_DEF_ENTRIES_RQ2    2040
+#define EHEA_DEF_ENTRIES_RQ3    2040
+#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 MAX_LRO_DESCRIPTORS 8
+
+/* Send completion signaling */
+
+/* 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
+
+#define EHEA_CACHE_LINE          128
+
+/* Memory Regions */
+#define EHEA_MR_ACC_CTRL       0x00800000
+
+#define EHEA_BUSMAP_START      0x8000000000000000ULL
+#define EHEA_INVAL_ADDR        0xFFFFFFFFFFFFFFFFULL
+#define EHEA_DIR_INDEX_SHIFT 13                   /* 8k Entries in 64k block */
+#define EHEA_TOP_INDEX_SHIFT (EHEA_DIR_INDEX_SHIFT * 2)
+#define EHEA_MAP_ENTRIES (1 << EHEA_DIR_INDEX_SHIFT)
+#define EHEA_MAP_SIZE (0x10000)                   /* currently fixed map size */
+#define EHEA_INDEX_MASK (EHEA_MAP_ENTRIES - 1)
+
+
+#define EHEA_WATCH_DOG_TIMEOUT 10*HZ
+
+/* utility functions */
+
+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 */
+};
+
+/*
+ * Memory map data structures
+ */
+struct ehea_dir_bmap
+{
+        u64 ent[EHEA_MAP_ENTRIES];
+};
+struct ehea_top_bmap
+{
+        struct ehea_dir_bmap *dir[EHEA_MAP_ENTRIES];
+};
+struct ehea_bmap
+{
+        struct ehea_top_bmap *top[EHEA_MAP_ENTRIES];
+};
+
+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 parameter
+ */
+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 {
+        struct ehea_adapter *adapter;
+        u64 handle;
+        u64 vaddr;
+        u32 lkey;
+};
+
+/*
+ * Port state information
+ */
+struct port_stats {
+        int poll_receive_errors;
+        int queue_stopped;
+        int err_tcp_cksum;
+        int err_ip_cksum;
+        int err_frame_crc;
+};
+
+#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 napi_struct napi;
+        struct port_stats p_stats;
+        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 *eq;
+        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;
+        int sq_skba_size;
+        spinlock_t netif_queue;
+        int queue_stopped;
+        int swqe_refill_th;
+        atomic_t swqe_avail;
+        int swqe_ll_count;
+        u32 swqe_id_counter;
+        u64 tx_packets;
+        u64 tx_bytes;
+        u64 rx_packets;
+        u64 rx_bytes;
+        u32 poll_counter;
+        struct net_lro_mgr lro_mgr;
+        struct net_lro_desc lro_desc[MAX_LRO_DESCRIPTORS];
+        int sq_restart_flag;
+};
+
+
+#define EHEA_MAX_PORTS 16
+
+#define EHEA_NUM_PORTRES_FW_HANDLES    6  /* QP handle, SendCQ handle,
+                                             RecvCQ handle, EQ handle,
+                                             SendMR handle, RecvMR handle */
+#define EHEA_NUM_PORT_FW_HANDLES       1  /* EQ handle */
+#define EHEA_NUM_ADAPTER_FW_HANDLES    2  /* MR handle, NEQ handle */
+
+struct ehea_adapter {
+        u64 handle;
+        struct platform_device *ofdev;
+        struct ehea_port *port[EHEA_MAX_PORTS];
+        struct ehea_eq *neq;       /* notification event queue */
+        struct tasklet_struct neq_tasklet;
+        struct ehea_mr mr;
+        u32 pd;                    /* protection domain */
+        u64 max_mc_mac;            /* max number of multicast mac addresses */
+        int active_ports;
+        struct list_head list;
+};
+
+
+struct ehea_mc_list {
+        struct list_head list;
+        u64 macaddr;
+};
+
+/* kdump support */
+struct ehea_fw_handle_entry {
+        u64 adh;               /* Adapter Handle */
+        u64 fwh;               /* Firmware Handle */
+};
+
+struct ehea_fw_handle_array {
+        struct ehea_fw_handle_entry *arr;
+        int num_entries;
+        struct mutex lock;
+};
+
+struct ehea_bcmc_reg_entry {
+        u64 adh;               /* Adapter Handle */
+        u32 port_id;           /* Logical Port Id */
+        u8 reg_type;           /* Registration Type */
+        u64 macaddr;
+};
+
+struct ehea_bcmc_reg_array {
+        struct ehea_bcmc_reg_entry *arr;
+        int num_entries;
+        spinlock_t lock;
+};
+
+#define EHEA_PORT_UP 1
+#define EHEA_PORT_DOWN 0
+#define EHEA_PHY_LINK_UP 1
+#define EHEA_PHY_LINK_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 platform_device  ofdev; /* Open Firmware Device */
+        struct ehea_mc_list *mc_list;    /* Multicast MAC addresses */
+        struct ehea_eq *qp_eq;
+        struct work_struct reset_task;
+        struct mutex port_lock;
+        char int_aff_name[EHEA_IRQ_NAME_SIZE];
+        int allmulti;                    /* Indicates IFF_ALLMULTI state */
+        int promisc;                     /* Indicates IFF_PROMISC state */
+        int num_tx_qps;
+        int num_add_tx_qps;
+        int num_mcs;
+        int resets;
+        unsigned long flags;
+        u64 mac_addr;
+        u32 logical_port_id;
+        u32 port_speed;
+        u32 msg_enable;
+        u32 sig_comp_iv;
+        u32 state;
+        u32 lro_max_aggr;
+        u8 phy_link;
+        u8 full_duplex;
+        u8 autoneg;
+        u8 num_def_qps;
+        wait_queue_head_t swqe_avail_wq;
+        wait_queue_head_t restart_wq;
+};
+
+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;
+};
+
+enum ehea_flag_bits {
+        __EHEA_STOP_XFER,
+        __EHEA_DISABLE_PORT_RESET
+};
+
+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__ */