[PATCH] ehea: IBM eHEA Ethernet Device Driver

Hi Jeff,

I fixed the __iomem issue and tested the driver with sparse. Looks good so far.
Thanks for your effort.

Jan-Bernd Themann

Signed-off-by: Jan-Bernd Themann <themann@de.ibm.com>

 drivers/net/Kconfig             |    9
 drivers/net/Makefile            |    1
 drivers/net/ehea/Makefile       |    6
 drivers/net/ehea/ehea.h         |  447 ++++++
 drivers/net/ehea/ehea_ethtool.c |  294 ++++
 drivers/net/ehea/ehea_hcall.h   |   51
 drivers/net/ehea/ehea_hw.h      |  287 ++++
 drivers/net/ehea/ehea_main.c    | 2654 ++++++++++++++++++++++++++++++++++++++++
 drivers/net/ehea/ehea_phyp.c    |  705 ++++++++++
 drivers/net/ehea/ehea_phyp.h    |  455 ++++++
 drivers/net/ehea/ehea_qmr.c     |  582 ++++++++
 drivers/net/ehea/ehea_qmr.h     |  358 +++++
 12 files changed, 5849 insertions(+)
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 447 insertions, 0 deletions

diff --git a/drivers/net/ehea/ehea.h b/drivers/net/ehea/ehea.h
new file mode 100644
index 000000000000..87c510f22aca
--- /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_0027"
+
+#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__ */