[deliverable/linux.git] / drivers / infiniband / hw / nes / nes.h

/*
 * Copyright (c) 2006 - 2008 NetEffect, Inc. All rights reserved.
 * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#ifndef __NES_H
#define __NES_H

#include <linux/netdevice.h>
#include <linux/inetdevice.h>
#include <linux/spinlock.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/workqueue.h>
#include <linux/slab.h>
#include <linux/version.h>
#include <asm/io.h>
#include <linux/crc32c.h>

#include <rdma/ib_smi.h>
#include <rdma/ib_verbs.h>
#include <rdma/ib_pack.h>
#include <rdma/rdma_cm.h>
#include <rdma/iw_cm.h>

#define NES_SEND_FIRST_WRITE

#define QUEUE_DISCONNECTS

#define DRV_BUILD   "1"

#define DRV_NAME    "iw_nes"
#define DRV_VERSION "1.0 KO Build " DRV_BUILD
#define PFX         DRV_NAME ": "

/*
 * NetEffect PCI vendor id and NE010 PCI device id.
 */
#ifndef PCI_VENDOR_ID_NETEFFECT	/* not in pci.ids yet */
#define PCI_VENDOR_ID_NETEFFECT       0x1678
#define PCI_DEVICE_ID_NETEFFECT_NE020 0x0100
#endif

#define NE020_REV   4
#define NE020_REV1  5

#define BAR_0       0
#define BAR_1       2

#define RX_BUF_SIZE             (1536 + 8)
#define NES_REG0_SIZE           (4 * 1024)
#define NES_TX_TIMEOUT          (6*HZ)
#define NES_FIRST_QPN           64
#define NES_SW_CONTEXT_ALIGN    1024

#define NES_NIC_MAX_NICS        16
#define NES_MAX_ARP_TABLE_SIZE  4096

#define NES_NIC_CEQ_SIZE        8
/* NICs will be on a separate CQ */
#define NES_CCEQ_SIZE ((nesadapter->max_cq / nesadapter->port_count) - 32)

#define NES_MAX_PORT_COUNT 4

#define MAX_DPC_ITERATIONS               128

#define NES_CQP_REQUEST_NO_DOORBELL_RING 0
#define NES_CQP_REQUEST_RING_DOORBELL    1

#define NES_DRV_OPT_ENABLE_MPA_VER_0     0x00000001
#define NES_DRV_OPT_DISABLE_MPA_CRC      0x00000002
#define NES_DRV_OPT_DISABLE_FIRST_WRITE  0x00000004
#define NES_DRV_OPT_DISABLE_INTF         0x00000008
#define NES_DRV_OPT_ENABLE_MSI           0x00000010
#define NES_DRV_OPT_DUAL_LOGICAL_PORT    0x00000020
#define NES_DRV_OPT_SUPRESS_OPTION_BC    0x00000040
#define NES_DRV_OPT_NO_INLINE_DATA       0x00000080
#define NES_DRV_OPT_DISABLE_INT_MOD      0x00000100
#define NES_DRV_OPT_DISABLE_VIRT_WQ      0x00000200

#define NES_AEQ_EVENT_TIMEOUT         2500
#define NES_DISCONNECT_EVENT_TIMEOUT  2000

/* debug levels */
/* must match userspace */
#define NES_DBG_HW          0x00000001
#define NES_DBG_INIT        0x00000002
#define NES_DBG_ISR         0x00000004
#define NES_DBG_PHY         0x00000008
#define NES_DBG_NETDEV      0x00000010
#define NES_DBG_CM          0x00000020
#define NES_DBG_CM1         0x00000040
#define NES_DBG_NIC_RX      0x00000080
#define NES_DBG_NIC_TX      0x00000100
#define NES_DBG_CQP         0x00000200
#define NES_DBG_MMAP        0x00000400
#define NES_DBG_MR          0x00000800
#define NES_DBG_PD          0x00001000
#define NES_DBG_CQ          0x00002000
#define NES_DBG_QP          0x00004000
#define NES_DBG_MOD_QP      0x00008000
#define NES_DBG_AEQ         0x00010000
#define NES_DBG_IW_RX       0x00020000
#define NES_DBG_IW_TX       0x00040000
#define NES_DBG_SHUTDOWN    0x00080000
#define NES_DBG_RSVD1       0x10000000
#define NES_DBG_RSVD2       0x20000000
#define NES_DBG_RSVD3       0x40000000
#define NES_DBG_RSVD4       0x80000000
#define NES_DBG_ALL         0xffffffff

#ifdef CONFIG_INFINIBAND_NES_DEBUG
#define nes_debug(level, fmt, args...) \
	if (level & nes_debug_level) \
		printk(KERN_ERR PFX "%s[%u]: " fmt, __func__, __LINE__, ##args)

#define assert(expr)                                                \
if (!(expr)) {                                                       \
	printk(KERN_ERR PFX "Assertion failed! %s, %s, %s, line %d\n",  \
		   #expr, __FILE__, __func__, __LINE__);                \
}

#define NES_EVENT_TIMEOUT   1200000
#else
#define nes_debug(level, fmt, args...)
#define assert(expr)          do {} while (0)

#define NES_EVENT_TIMEOUT   100000
#endif

#include "nes_hw.h"
#include "nes_verbs.h"
#include "nes_context.h"
#include "nes_user.h"
#include "nes_cm.h"

extern int max_mtu;
#define max_frame_len (max_mtu+ETH_HLEN)
extern int interrupt_mod_interval;
extern int nes_if_count;
extern int mpa_version;
extern int disable_mpa_crc;
extern unsigned int send_first;
extern unsigned int nes_drv_opt;
extern unsigned int nes_debug_level;

extern struct list_head nes_adapter_list;

extern atomic_t cm_connects;
extern atomic_t cm_accepts;
extern atomic_t cm_disconnects;
extern atomic_t cm_closes;
extern atomic_t cm_connecteds;
extern atomic_t cm_connect_reqs;
extern atomic_t cm_rejects;
extern atomic_t mod_qp_timouts;
extern atomic_t qps_created;
extern atomic_t qps_destroyed;
extern atomic_t sw_qps_destroyed;
extern u32 mh_detected;
extern u32 mh_pauses_sent;
extern u32 cm_packets_sent;
extern u32 cm_packets_bounced;
extern u32 cm_packets_created;
extern u32 cm_packets_received;
extern u32 cm_packets_dropped;
extern u32 cm_packets_retrans;
extern u32 cm_listens_created;
extern u32 cm_listens_destroyed;
extern u32 cm_backlog_drops;
extern atomic_t cm_loopbacks;
extern atomic_t cm_nodes_created;
extern atomic_t cm_nodes_destroyed;
extern atomic_t cm_accel_dropped_pkts;
extern atomic_t cm_resets_recvd;

extern u32 int_mod_timer_init;
extern u32 int_mod_cq_depth_256;
extern u32 int_mod_cq_depth_128;
extern u32 int_mod_cq_depth_32;
extern u32 int_mod_cq_depth_24;
extern u32 int_mod_cq_depth_16;
extern u32 int_mod_cq_depth_4;
extern u32 int_mod_cq_depth_1;

struct nes_device {
	struct nes_adapter	   *nesadapter;
	void __iomem           *regs;
	void __iomem           *index_reg;
	struct pci_dev         *pcidev;
	struct net_device      *netdev[NES_NIC_MAX_NICS];
	u64                    link_status_interrupts;
	struct tasklet_struct  dpc_tasklet;
	spinlock_t             indexed_regs_lock;
	unsigned long          csr_start;
	unsigned long          doorbell_region;
	unsigned long          doorbell_start;
	unsigned long          mac_tx_errors;
	unsigned long          mac_pause_frames_sent;
	unsigned long          mac_pause_frames_received;
	unsigned long          mac_rx_errors;
	unsigned long          mac_rx_crc_errors;
	unsigned long          mac_rx_symbol_err_frames;
	unsigned long          mac_rx_jabber_frames;
	unsigned long          mac_rx_oversized_frames;
	unsigned long          mac_rx_short_frames;
	unsigned long          port_rx_discards;
	unsigned long          port_tx_discards;
	unsigned int           mac_index;
	unsigned int           nes_stack_start;

	/* Control Structures */
	void                   *cqp_vbase;
	dma_addr_t             cqp_pbase;
	u32                    cqp_mem_size;
	u8                     ceq_index;
	u8                     nic_ceq_index;
	struct nes_hw_cqp      cqp;
	struct nes_hw_cq       ccq;
	struct list_head       cqp_avail_reqs;
	struct list_head       cqp_pending_reqs;
	struct nes_cqp_request *nes_cqp_requests;

	u32                    int_req;
	u32                    int_stat;
	u32                    timer_int_req;
	u32                    timer_only_int_count;
	u32                    intf_int_req;
	u32                    last_mac_tx_pauses;
	u32                    last_used_chunks_tx;
	struct list_head       list;

	u16                    base_doorbell_index;
	u16                    currcq_count;
	u16                    deepcq_count;
	u8                     msi_enabled;
	u8                     netdev_count;
	u8                     napi_isr_ran;
	u8                     disable_rx_flow_control;
	u8                     disable_tx_flow_control;
};


static inline __le32 get_crc_value(struct nes_v4_quad *nes_quad)
{
	u32 crc_value;
	crc_value = crc32c(~0, (void *)nes_quad, sizeof (struct nes_v4_quad));

	/*
	 * With commit ef19454b ("[LIB] crc32c: Keep intermediate crc
	 * state in cpu order"), behavior of crc32c changes on
	 * big-endian platforms.  Our algorithm expects the previous
	 * behavior; otherwise we have RDMA connection establishment
	 * issue on big-endian.
	 */
	return cpu_to_le32(crc_value);
}

static inline void
set_wqe_64bit_value(__le32 *wqe_words, u32 index, u64 value)
{
	wqe_words[index]     = cpu_to_le32((u32) ((unsigned long)value));
	wqe_words[index + 1] = cpu_to_le32((u32)(upper_32_bits((unsigned long)value)));
}

static inline void
set_wqe_32bit_value(__le32 *wqe_words, u32 index, u32 value)
{
	wqe_words[index] = cpu_to_le32(value);
}

static inline void
nes_fill_init_cqp_wqe(struct nes_hw_cqp_wqe *cqp_wqe, struct nes_device *nesdev)
{
	set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_COMP_CTX_LOW_IDX,
			(u64)((unsigned long) &nesdev->cqp));
	cqp_wqe->wqe_words[NES_CQP_WQE_COMP_SCRATCH_LOW_IDX]   = 0;
	cqp_wqe->wqe_words[NES_CQP_WQE_COMP_SCRATCH_HIGH_IDX]  = 0;
	cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX] = 0;
	cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_LEN_IDX]       = 0;
	cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_LOW_IDX]       = 0;
	cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PA_LOW_IDX]        = 0;
	cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PA_HIGH_IDX]       = 0;
}

static inline void
nes_fill_init_qp_wqe(struct nes_hw_qp_wqe *wqe, struct nes_qp *nesqp, u32 head)
{
	u32 value;
	value = ((u32)((unsigned long) nesqp)) | head;
	set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_CTX_HIGH_IDX,
			(u32)(upper_32_bits((unsigned long)(nesqp))));
	set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX, value);
}

/* Read from memory-mapped device */
static inline u32 nes_read_indexed(struct nes_device *nesdev, u32 reg_index)
{
	unsigned long flags;
	void __iomem *addr = nesdev->index_reg;
	u32 value;

	spin_lock_irqsave(&nesdev->indexed_regs_lock, flags);

	writel(reg_index, addr);
	value = readl((void __iomem *)addr + 4);

	spin_unlock_irqrestore(&nesdev->indexed_regs_lock, flags);
	return value;
}

static inline u32 nes_read32(const void __iomem *addr)
{
	return readl(addr);
}

static inline u16 nes_read16(const void __iomem *addr)
{
	return readw(addr);
}

static inline u8 nes_read8(const void __iomem *addr)
{
	return readb(addr);
}

/* Write to memory-mapped device */
static inline void nes_write_indexed(struct nes_device *nesdev, u32 reg_index, u32 val)
{
	unsigned long flags;
	void __iomem *addr = nesdev->index_reg;

	spin_lock_irqsave(&nesdev->indexed_regs_lock, flags);

	writel(reg_index, addr);
	writel(val, (void __iomem *)addr + 4);

	spin_unlock_irqrestore(&nesdev->indexed_regs_lock, flags);
}

static inline void nes_write32(void __iomem *addr, u32 val)
{
	writel(val, addr);
}

static inline void nes_write16(void __iomem *addr, u16 val)
{
	writew(val, addr);
}

static inline void nes_write8(void __iomem *addr, u8 val)
{
	writeb(val, addr);
}


static inline int nes_alloc_resource(struct nes_adapter *nesadapter,
		unsigned long *resource_array, u32 max_resources,
		u32 *req_resource_num, u32 *next)
{
	unsigned long flags;
	u32 resource_num;

	spin_lock_irqsave(&nesadapter->resource_lock, flags);

	resource_num = find_next_zero_bit(resource_array, max_resources, *next);
	if (resource_num >= max_resources) {
		resource_num = find_first_zero_bit(resource_array, max_resources);
		if (resource_num >= max_resources) {
			printk(KERN_ERR PFX "%s: No available resourcess.\n", __func__);
			spin_unlock_irqrestore(&nesadapter->resource_lock, flags);
			return -EMFILE;
		}
	}
	set_bit(resource_num, resource_array);
	*next = resource_num+1;
	if (*next == max_resources) {
		*next = 0;
	}
	spin_unlock_irqrestore(&nesadapter->resource_lock, flags);
	*req_resource_num = resource_num;

	return 0;
}

static inline int nes_is_resource_allocated(struct nes_adapter *nesadapter,
		unsigned long *resource_array, u32 resource_num)
{
	unsigned long flags;
	int bit_is_set;

	spin_lock_irqsave(&nesadapter->resource_lock, flags);

	bit_is_set = test_bit(resource_num, resource_array);
	nes_debug(NES_DBG_HW, "resource_num %u is%s allocated.\n",
			resource_num, (bit_is_set ? "": " not"));
	spin_unlock_irqrestore(&nesadapter->resource_lock, flags);

	return bit_is_set;
}

static inline void nes_free_resource(struct nes_adapter *nesadapter,
		unsigned long *resource_array, u32 resource_num)
{
	unsigned long flags;

	spin_lock_irqsave(&nesadapter->resource_lock, flags);
	clear_bit(resource_num, resource_array);
	spin_unlock_irqrestore(&nesadapter->resource_lock, flags);
}

static inline struct nes_vnic *to_nesvnic(struct ib_device *ibdev)
{
	return container_of(ibdev, struct nes_ib_device, ibdev)->nesvnic;
}

static inline struct nes_pd *to_nespd(struct ib_pd *ibpd)
{
	return container_of(ibpd, struct nes_pd, ibpd);
}

static inline struct nes_ucontext *to_nesucontext(struct ib_ucontext *ibucontext)
{
	return container_of(ibucontext, struct nes_ucontext, ibucontext);
}

static inline struct nes_mr *to_nesmr(struct ib_mr *ibmr)
{
	return container_of(ibmr, struct nes_mr, ibmr);
}

static inline struct nes_mr *to_nesmr_from_ibfmr(struct ib_fmr *ibfmr)
{
	return container_of(ibfmr, struct nes_mr, ibfmr);
}

static inline struct nes_mr *to_nesmw(struct ib_mw *ibmw)
{
	return container_of(ibmw, struct nes_mr, ibmw);
}

static inline struct nes_fmr *to_nesfmr(struct nes_mr *nesmr)
{
	return container_of(nesmr, struct nes_fmr, nesmr);
}

static inline struct nes_cq *to_nescq(struct ib_cq *ibcq)
{
	return container_of(ibcq, struct nes_cq, ibcq);
}

static inline struct nes_qp *to_nesqp(struct ib_qp *ibqp)
{
	return container_of(ibqp, struct nes_qp, ibqp);
}


/* nes.c */
void nes_add_ref(struct ib_qp *);
void nes_rem_ref(struct ib_qp *);
struct ib_qp *nes_get_qp(struct ib_device *, int);


/* nes_hw.c */
struct nes_adapter *nes_init_adapter(struct nes_device *, u8);
void  nes_nic_init_timer_defaults(struct nes_device *, u8);
void nes_destroy_adapter(struct nes_adapter *);
int nes_init_cqp(struct nes_device *);
int nes_init_phy(struct nes_device *);
int nes_init_nic_qp(struct nes_device *, struct net_device *);
void nes_destroy_nic_qp(struct nes_vnic *);
int nes_napi_isr(struct nes_device *);
void nes_dpc(unsigned long);
void nes_nic_ce_handler(struct nes_device *, struct nes_hw_nic_cq *);
void nes_iwarp_ce_handler(struct nes_device *, struct nes_hw_cq *);
int nes_destroy_cqp(struct nes_device *);
int nes_nic_cm_xmit(struct sk_buff *, struct net_device *);

/* nes_nic.c */
struct net_device *nes_netdev_init(struct nes_device *, void __iomem *);
void nes_netdev_destroy(struct net_device *);
int nes_nic_cm_xmit(struct sk_buff *, struct net_device *);

/* nes_cm.c */
void *nes_cm_create(struct net_device *);
int nes_cm_recv(struct sk_buff *, struct net_device *);
void nes_update_arp(unsigned char *, u32, u32, u16, u16);
void nes_manage_arp_cache(struct net_device *, unsigned char *, u32, u32);
void nes_sock_release(struct nes_qp *, unsigned long *);
void flush_wqes(struct nes_device *nesdev, struct nes_qp *, u32, u32);
int nes_manage_apbvt(struct nes_vnic *, u32, u32, u32);
int nes_cm_disconn(struct nes_qp *);
void nes_cm_disconn_worker(void *);

/* nes_verbs.c */
int nes_hw_modify_qp(struct nes_device *, struct nes_qp *, u32, u32);
int nes_modify_qp(struct ib_qp *, struct ib_qp_attr *, int, struct ib_udata *);
struct nes_ib_device *nes_init_ofa_device(struct net_device *);
void nes_destroy_ofa_device(struct nes_ib_device *);
int nes_register_ofa_device(struct nes_ib_device *);

/* nes_util.c */
int nes_read_eeprom_values(struct nes_device *, struct nes_adapter *);
void nes_write_1G_phy_reg(struct nes_device *, u8, u8, u16);
void nes_read_1G_phy_reg(struct nes_device *, u8, u8, u16 *);
void nes_write_10G_phy_reg(struct nes_device *, u16, u8, u16, u16);
void nes_read_10G_phy_reg(struct nes_device *, u8, u8, u16);
struct nes_cqp_request *nes_get_cqp_request(struct nes_device *);
void nes_post_cqp_request(struct nes_device *, struct nes_cqp_request *, int);
int nes_arp_table(struct nes_device *, u32, u8 *, u32);
void nes_mh_fix(unsigned long);
void nes_clc(unsigned long);
void nes_dump_mem(unsigned int, void *, int);
u32 nes_crc32(u32, u32, u32, u32, u8 *, u32, u32, u32);

#endif	/* __NES_H */
Commit	Line	Data
3c2d774c GS	1	/*
	2	* Copyright (c) 2006 - 2008 NetEffect, Inc. All rights reserved.
	3	* Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved.
	4	*
	5	* This software is available to you under a choice of one of two
	6	* licenses. You may choose to be licensed under the terms of the GNU
	7	* General Public License (GPL) Version 2, available from the file
	8	* COPYING in the main directory of this source tree, or the
	9	* OpenIB.org BSD license below:
	10	*
	11	* Redistribution and use in source and binary forms, with or
	12	* without modification, are permitted provided that the following
	13	* conditions are met:
	14	*
	15	* - Redistributions of source code must retain the above
	16	* copyright notice, this list of conditions and the following
	17	* disclaimer.
	18	*
	19	* - Redistributions in binary form must reproduce the above
	20	* copyright notice, this list of conditions and the following
	21	* disclaimer in the documentation and/or other materials
	22	* provided with the distribution.
	23	*
	24	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	25	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	26	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	27	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	28	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	29	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	30	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	31	* SOFTWARE.
	32	*/
	33
	34	#ifndef __NES_H
	35	#define __NES_H
	36
	37	#include <linux/netdevice.h>
	38	#include <linux/inetdevice.h>
	39	#include <linux/spinlock.h>
	40	#include <linux/kernel.h>
	41	#include <linux/delay.h>
	42	#include <linux/pci.h>
	43	#include <linux/dma-mapping.h>
	44	#include <linux/workqueue.h>
	45	#include <linux/slab.h>
3c2d774c GS	46	#include <linux/version.h>
	47	#include <asm/io.h>
	48	#include <linux/crc32c.h>
	49
	50	#include <rdma/ib_smi.h>
	51	#include <rdma/ib_verbs.h>
	52	#include <rdma/ib_pack.h>
	53	#include <rdma/rdma_cm.h>
	54	#include <rdma/iw_cm.h>
	55
	56	#define NES_SEND_FIRST_WRITE
	57
	58	#define QUEUE_DISCONNECTS
	59
	60	#define DRV_BUILD "1"
	61
	62	#define DRV_NAME "iw_nes"
	63	#define DRV_VERSION "1.0 KO Build " DRV_BUILD
	64	#define PFX DRV_NAME ": "
	65
	66	/*
	67	* NetEffect PCI vendor id and NE010 PCI device id.
	68	*/
	69	#ifndef PCI_VENDOR_ID_NETEFFECT /* not in pci.ids yet */
	70	#define PCI_VENDOR_ID_NETEFFECT 0x1678
	71	#define PCI_DEVICE_ID_NETEFFECT_NE020 0x0100
	72	#endif
	73
	74	#define NE020_REV 4
	75	#define NE020_REV1 5
	76
	77	#define BAR_0 0
	78	#define BAR_1 2
	79
	80	#define RX_BUF_SIZE (1536 + 8)
	81	#define NES_REG0_SIZE (4 * 1024)
	82	#define NES_TX_TIMEOUT (6*HZ)
	83	#define NES_FIRST_QPN 64
	84	#define NES_SW_CONTEXT_ALIGN 1024
	85
	86	#define NES_NIC_MAX_NICS 16
	87	#define NES_MAX_ARP_TABLE_SIZE 4096
	88
	89	#define NES_NIC_CEQ_SIZE 8
	90	/* NICs will be on a separate CQ */
	91	#define NES_CCEQ_SIZE ((nesadapter->max_cq / nesadapter->port_count) - 32)
	92
	93	#define NES_MAX_PORT_COUNT 4
	94
	95	#define MAX_DPC_ITERATIONS 128
	96
	97	#define NES_CQP_REQUEST_NO_DOORBELL_RING 0
	98	#define NES_CQP_REQUEST_RING_DOORBELL 1
	99
	100	#define NES_DRV_OPT_ENABLE_MPA_VER_0 0x00000001
	101	#define NES_DRV_OPT_DISABLE_MPA_CRC 0x00000002
	102	#define NES_DRV_OPT_DISABLE_FIRST_WRITE 0x00000004
	103	#define NES_DRV_OPT_DISABLE_INTF 0x00000008
	104	#define NES_DRV_OPT_ENABLE_MSI 0x00000010
	105	#define NES_DRV_OPT_DUAL_LOGICAL_PORT 0x00000020
	106	#define NES_DRV_OPT_SUPRESS_OPTION_BC 0x00000040
	107	#define NES_DRV_OPT_NO_INLINE_DATA 0x00000080
	108	#define NES_DRV_OPT_DISABLE_INT_MOD 0x00000100
	109	#define NES_DRV_OPT_DISABLE_VIRT_WQ 0x00000200
110
111	#define NES_AEQ_EVENT_TIMEOUT 2500
112	#define NES_DISCONNECT_EVENT_TIMEOUT 2000
113
114	/* debug levels */
115	/* must match userspace */
116	#define NES_DBG_HW 0x00000001
117	#define NES_DBG_INIT 0x00000002
118	#define NES_DBG_ISR 0x00000004
119	#define NES_DBG_PHY 0x00000008
120	#define NES_DBG_NETDEV 0x00000010
121	#define NES_DBG_CM 0x00000020
122	#define NES_DBG_CM1 0x00000040
123	#define NES_DBG_NIC_RX 0x00000080
124	#define NES_DBG_NIC_TX 0x00000100
125	#define NES_DBG_CQP 0x00000200
126	#define NES_DBG_MMAP 0x00000400
127	#define NES_DBG_MR 0x00000800
128	#define NES_DBG_PD 0x00001000
129	#define NES_DBG_CQ 0x00002000
130	#define NES_DBG_QP 0x00004000
131	#define NES_DBG_MOD_QP 0x00008000
132	#define NES_DBG_AEQ 0x00010000
133	#define NES_DBG_IW_RX 0x00020000
134	#define NES_DBG_IW_TX 0x00040000
135	#define NES_DBG_SHUTDOWN 0x00080000
136	#define NES_DBG_RSVD1 0x10000000
137	#define NES_DBG_RSVD2 0x20000000
138	#define NES_DBG_RSVD3 0x40000000
139	#define NES_DBG_RSVD4 0x80000000
140	#define NES_DBG_ALL 0xffffffff
141
142	#ifdef CONFIG_INFINIBAND_NES_DEBUG
143	#define nes_debug(level, fmt, args...) \
144	if (level & nes_debug_level) \
33718363	145	printk(KERN_ERR PFX "%s[%u]: " fmt, __func__, __LINE__, ##args)
3c2d774c GS	146
	147	#define assert(expr) \
	148	if (!(expr)) { \
	149	printk(KERN_ERR PFX "Assertion failed! %s, %s, %s, line %d\n", \
33718363	150	#expr, __FILE__, __func__, __LINE__); \
3c2d774c GS	151	}
	152
	153	#define NES_EVENT_TIMEOUT 1200000
	154	#else
	155	#define nes_debug(level, fmt, args...)
	156	#define assert(expr) do {} while (0)
	157
	158	#define NES_EVENT_TIMEOUT 100000
	159	#endif
	160
	161	#include "nes_hw.h"
	162	#include "nes_verbs.h"
	163	#include "nes_context.h"
	164	#include "nes_user.h"
	165	#include "nes_cm.h"
	166
	167	extern int max_mtu;
3c2d774c GS	168	#define max_frame_len (max_mtu+ETH_HLEN)
	169	extern int interrupt_mod_interval;
	170	extern int nes_if_count;
	171	extern int mpa_version;
	172	extern int disable_mpa_crc;
	173	extern unsigned int send_first;
	174	extern unsigned int nes_drv_opt;
	175	extern unsigned int nes_debug_level;
	176
	177	extern struct list_head nes_adapter_list;
3c2d774c GS	178
	179	extern atomic_t cm_connects;
	180	extern atomic_t cm_accepts;
	181	extern atomic_t cm_disconnects;
	182	extern atomic_t cm_closes;
	183	extern atomic_t cm_connecteds;
	184	extern atomic_t cm_connect_reqs;
	185	extern atomic_t cm_rejects;
	186	extern atomic_t mod_qp_timouts;
	187	extern atomic_t qps_created;
	188	extern atomic_t qps_destroyed;
	189	extern atomic_t sw_qps_destroyed;
	190	extern u32 mh_detected;
	191	extern u32 mh_pauses_sent;
	192	extern u32 cm_packets_sent;
	193	extern u32 cm_packets_bounced;
	194	extern u32 cm_packets_created;
	195	extern u32 cm_packets_received;
	196	extern u32 cm_packets_dropped;
	197	extern u32 cm_packets_retrans;
	198	extern u32 cm_listens_created;
	199	extern u32 cm_listens_destroyed;
	200	extern u32 cm_backlog_drops;
	201	extern atomic_t cm_loopbacks;
	202	extern atomic_t cm_nodes_created;
	203	extern atomic_t cm_nodes_destroyed;
	204	extern atomic_t cm_accel_dropped_pkts;
	205	extern atomic_t cm_resets_recvd;
	206
3c2d774c GS	207	extern u32 int_mod_timer_init;
	208	extern u32 int_mod_cq_depth_256;
	209	extern u32 int_mod_cq_depth_128;
	210	extern u32 int_mod_cq_depth_32;
	211	extern u32 int_mod_cq_depth_24;
	212	extern u32 int_mod_cq_depth_16;
	213	extern u32 int_mod_cq_depth_4;
	214	extern u32 int_mod_cq_depth_1;
	215
3c2d774c GS	216	struct nes_device {
	217	struct nes_adapter *nesadapter;
	218	void __iomem *regs;
	219	void __iomem *index_reg;
	220	struct pci_dev *pcidev;
	221	struct net_device *netdev[NES_NIC_MAX_NICS];
	222	u64 link_status_interrupts;
	223	struct tasklet_struct dpc_tasklet;
	224	spinlock_t indexed_regs_lock;
	225	unsigned long csr_start;
	226	unsigned long doorbell_region;
	227	unsigned long doorbell_start;
	228	unsigned long mac_tx_errors;
	229	unsigned long mac_pause_frames_sent;
	230	unsigned long mac_pause_frames_received;
	231	unsigned long mac_rx_errors;
	232	unsigned long mac_rx_crc_errors;
	233	unsigned long mac_rx_symbol_err_frames;
	234	unsigned long mac_rx_jabber_frames;
	235	unsigned long mac_rx_oversized_frames;
	236	unsigned long mac_rx_short_frames;
	237	unsigned long port_rx_discards;
	238	unsigned long port_tx_discards;
	239	unsigned int mac_index;
	240	unsigned int nes_stack_start;
	241
	242	/* Control Structures */
	243	void *cqp_vbase;
	244	dma_addr_t cqp_pbase;
	245	u32 cqp_mem_size;
	246	u8 ceq_index;
	247	u8 nic_ceq_index;
	248	struct nes_hw_cqp cqp;
	249	struct nes_hw_cq ccq;
	250	struct list_head cqp_avail_reqs;
	251	struct list_head cqp_pending_reqs;
	252	struct nes_cqp_request *nes_cqp_requests;
	253
	254	u32 int_req;
	255	u32 int_stat;
	256	u32 timer_int_req;
	257	u32 timer_only_int_count;
	258	u32 intf_int_req;
	259	u32 last_mac_tx_pauses;
	260	u32 last_used_chunks_tx;
	261	struct list_head list;
	262
	263	u16 base_doorbell_index;
	264	u16 currcq_count;
	265	u16 deepcq_count;
	266	u8 msi_enabled;
	267	u8 netdev_count;
	268	u8 napi_isr_ran;
	269	u8 disable_rx_flow_control;
	270	u8 disable_tx_flow_control;
	271	};
	272
	273
30da7cff FL	274	static inline __le32 get_crc_value(struct nes_v4_quad *nes_quad)
	275	{
	276	u32 crc_value;
	277	crc_value = crc32c(~0, (void *)nes_quad, sizeof (struct nes_v4_quad));
	278
	279	/*
	280	* With commit ef19454b ("[LIB] crc32c: Keep intermediate crc
	281	* state in cpu order"), behavior of crc32c changes on
	282	* big-endian platforms. Our algorithm expects the previous
	283	* behavior; otherwise we have RDMA connection establishment
	284	* issue on big-endian.
	285	*/
	286	return cpu_to_le32(crc_value);
	287	}
	288
3c2d774c GS	289	static inline void
	290	set_wqe_64bit_value(__le32 *wqe_words, u32 index, u64 value)
	291	{
	292	wqe_words[index] = cpu_to_le32((u32) ((unsigned long)value));
	293	wqe_words[index + 1] = cpu_to_le32((u32)(upper_32_bits((unsigned long)value)));
	294	}
	295
	296	static inline void
	297	set_wqe_32bit_value(__le32 *wqe_words, u32 index, u32 value)
	298	{
	299	wqe_words[index] = cpu_to_le32(value);
	300	}
	301
	302	static inline void
	303	nes_fill_init_cqp_wqe(struct nes_hw_cqp_wqe cqp_wqe, struct nes_device nesdev)
	304	{
	305	set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_COMP_CTX_LOW_IDX,
	306	(u64)((unsigned long) &nesdev->cqp));
	307	cqp_wqe->wqe_words[NES_CQP_WQE_COMP_SCRATCH_LOW_IDX] = 0;
	308	cqp_wqe->wqe_words[NES_CQP_WQE_COMP_SCRATCH_HIGH_IDX] = 0;
	309	cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX] = 0;
	310	cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_LEN_IDX] = 0;
	311	cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_LOW_IDX] = 0;
	312	cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PA_LOW_IDX] = 0;
	313	cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PA_HIGH_IDX] = 0;
	314	}
	315
	316	static inline void
	317	nes_fill_init_qp_wqe(struct nes_hw_qp_wqe wqe, struct nes_qp nesqp, u32 head)
	318	{
	319	u32 value;
	320	value = ((u32)((unsigned long) nesqp)) \| head;
	321	set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_CTX_HIGH_IDX,
	322	(u32)(upper_32_bits((unsigned long)(nesqp))));
	323	set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX, value);
	324	}
	325
	326	/* Read from memory-mapped device */
	327	static inline u32 nes_read_indexed(struct nes_device *nesdev, u32 reg_index)
	328	{
	329	unsigned long flags;
	330	void __iomem *addr = nesdev->index_reg;
	331	u32 value;
	332
	333	spin_lock_irqsave(&nesdev->indexed_regs_lock, flags);
	334
	335	writel(reg_index, addr);
	336	value = readl((void __iomem *)addr + 4);
	337
	338	spin_unlock_irqrestore(&nesdev->indexed_regs_lock, flags);
	339	return value;
	340	}
	341
	342	static inline u32 nes_read32(const void __iomem *addr)
	343	{
	344	return readl(addr);
	345	}
	346
	347	static inline u16 nes_read16(const void __iomem *addr)
	348	{
	349	return readw(addr);
	350	}
	351
	352	static inline u8 nes_read8(const void __iomem *addr)
353	{
354	return readb(addr);
355	}
356
357	/* Write to memory-mapped device */
358	static inline void nes_write_indexed(struct nes_device *nesdev, u32 reg_index, u32 val)
359	{
360	unsigned long flags;
361	void __iomem *addr = nesdev->index_reg;
362
363	spin_lock_irqsave(&nesdev->indexed_regs_lock, flags);
364
365	writel(reg_index, addr);
366	writel(val, (void __iomem *)addr + 4);
367
368	spin_unlock_irqrestore(&nesdev->indexed_regs_lock, flags);
369	}
370
371	static inline void nes_write32(void __iomem *addr, u32 val)
372	{
373	writel(val, addr);
374	}
375
376	static inline void nes_write16(void __iomem *addr, u16 val)
377	{
378	writew(val, addr);
379	}
380
381	static inline void nes_write8(void __iomem *addr, u8 val)
382	{
383	writeb(val, addr);
384	}
385
386
387
388	static inline int nes_alloc_resource(struct nes_adapter *nesadapter,
389	unsigned long *resource_array, u32 max_resources,
390	u32 req_resource_num, u32 next)
391	{
392	unsigned long flags;
393	u32 resource_num;
394
395	spin_lock_irqsave(&nesadapter->resource_lock, flags);
396
397	resource_num = find_next_zero_bit(resource_array, max_resources, *next);
398	if (resource_num >= max_resources) {
399	resource_num = find_first_zero_bit(resource_array, max_resources);
400	if (resource_num >= max_resources) {
33718363	401	printk(KERN_ERR PFX "%s: No available resourcess.\n", __func__);
3c2d774c GS	402	spin_unlock_irqrestore(&nesadapter->resource_lock, flags);
	403	return -EMFILE;
	404	}
	405	}
	406	set_bit(resource_num, resource_array);
	407	*next = resource_num+1;
	408	if (*next == max_resources) {
	409	*next = 0;
	410	}
	411	spin_unlock_irqrestore(&nesadapter->resource_lock, flags);
	412	*req_resource_num = resource_num;
	413
	414	return 0;
	415	}
	416
	417	static inline int nes_is_resource_allocated(struct nes_adapter *nesadapter,
	418	unsigned long *resource_array, u32 resource_num)
	419	{
	420	unsigned long flags;
	421	int bit_is_set;
	422
	423	spin_lock_irqsave(&nesadapter->resource_lock, flags);
	424
	425	bit_is_set = test_bit(resource_num, resource_array);
	426	nes_debug(NES_DBG_HW, "resource_num %u is%s allocated.\n",
	427	resource_num, (bit_is_set ? "": " not"));
	428	spin_unlock_irqrestore(&nesadapter->resource_lock, flags);
	429
	430	return bit_is_set;
	431	}
	432
	433	static inline void nes_free_resource(struct nes_adapter *nesadapter,
	434	unsigned long *resource_array, u32 resource_num)
	435	{
	436	unsigned long flags;
	437
	438	spin_lock_irqsave(&nesadapter->resource_lock, flags);
	439	clear_bit(resource_num, resource_array);
	440	spin_unlock_irqrestore(&nesadapter->resource_lock, flags);
	441	}
	442
	443	static inline struct nes_vnic to_nesvnic(struct ib_device ibdev)
	444	{
	445	return container_of(ibdev, struct nes_ib_device, ibdev)->nesvnic;
	446	}
	447
	448	static inline struct nes_pd to_nespd(struct ib_pd ibpd)
	449	{
	450	return container_of(ibpd, struct nes_pd, ibpd);
	451	}
	452
	453	static inline struct nes_ucontext to_nesucontext(struct ib_ucontext ibucontext)
	454	{
	455	return container_of(ibucontext, struct nes_ucontext, ibucontext);
	456	}
	457
	458	static inline struct nes_mr to_nesmr(struct ib_mr ibmr)
	459	{
	460	return container_of(ibmr, struct nes_mr, ibmr);
	461	}
	462
	463	static inline struct nes_mr to_nesmr_from_ibfmr(struct ib_fmr ibfmr)
	464	{
	465	return container_of(ibfmr, struct nes_mr, ibfmr);
466	}
467
468	static inline struct nes_mr to_nesmw(struct ib_mw ibmw)
469	{
470	return container_of(ibmw, struct nes_mr, ibmw);
471	}
472
473	static inline struct nes_fmr to_nesfmr(struct nes_mr nesmr)
474	{
475	return container_of(nesmr, struct nes_fmr, nesmr);
476	}
477
478	static inline struct nes_cq to_nescq(struct ib_cq ibcq)
479	{
480	return container_of(ibcq, struct nes_cq, ibcq);
481	}
482
483	static inline struct nes_qp to_nesqp(struct ib_qp ibqp)
484	{
485	return container_of(ibqp, struct nes_qp, ibqp);
486	}
487
488
489
490	/* nes.c */
491	void nes_add_ref(struct ib_qp *);
492	void nes_rem_ref(struct ib_qp *);
493	struct ib_qp nes_get_qp(struct ib_device , int);
494
495
496	/* nes_hw.c */
497	struct nes_adapter nes_init_adapter(struct nes_device , u8);
498	void nes_nic_init_timer_defaults(struct nes_device *, u8);
3c2d774c GS	499	void nes_destroy_adapter(struct nes_adapter *);
	500	int nes_init_cqp(struct nes_device *);
	501	int nes_init_phy(struct nes_device *);
	502	int nes_init_nic_qp(struct nes_device , struct net_device );
	503	void nes_destroy_nic_qp(struct nes_vnic *);
	504	int nes_napi_isr(struct nes_device *);
	505	void nes_dpc(unsigned long);
3c2d774c	506	void nes_nic_ce_handler(struct nes_device , struct nes_hw_nic_cq );
3c2d774c GS	507	void nes_iwarp_ce_handler(struct nes_device , struct nes_hw_cq );
	508	int nes_destroy_cqp(struct nes_device *);
	509	int nes_nic_cm_xmit(struct sk_buff , struct net_device );
	510
	511	/* nes_nic.c */
3c2d774c GS	512	struct net_device nes_netdev_init(struct nes_device , void __iomem *);
	513	void nes_netdev_destroy(struct net_device *);
	514	int nes_nic_cm_xmit(struct sk_buff , struct net_device );
	515
	516	/* nes_cm.c */
	517	void nes_cm_create(struct net_device );
	518	int nes_cm_recv(struct sk_buff , struct net_device );
	519	void nes_update_arp(unsigned char *, u32, u32, u16, u16);
	520	void nes_manage_arp_cache(struct net_device , unsigned char , u32, u32);
	521	void nes_sock_release(struct nes_qp , unsigned long );
3c2d774c GS	522	void flush_wqes(struct nes_device nesdev, struct nes_qp , u32, u32);
	523	int nes_manage_apbvt(struct nes_vnic *, u32, u32, u32);
	524	int nes_cm_disconn(struct nes_qp *);
	525	void nes_cm_disconn_worker(void *);
	526
	527	/* nes_verbs.c */
	528	int nes_hw_modify_qp(struct nes_device , struct nes_qp , u32, u32);
	529	int nes_modify_qp(struct ib_qp , struct ib_qp_attr , int, struct ib_udata *);
	530	struct nes_ib_device nes_init_ofa_device(struct net_device );
	531	void nes_destroy_ofa_device(struct nes_ib_device *);
	532	int nes_register_ofa_device(struct nes_ib_device *);
3c2d774c GS	533
	534	/* nes_util.c */
	535	int nes_read_eeprom_values(struct nes_device , struct nes_adapter );
	536	void nes_write_1G_phy_reg(struct nes_device *, u8, u8, u16);
	537	void nes_read_1G_phy_reg(struct nes_device , u8, u8, u16 );
0e1de5d6 ES	538	void nes_write_10G_phy_reg(struct nes_device *, u16, u8, u16, u16);
0e1de5d6 ES	539	void nes_read_10G_phy_reg(struct nes_device *, u8, u8, u16);
3c2d774c GS	540	struct nes_cqp_request nes_get_cqp_request(struct nes_device );
	541	void nes_post_cqp_request(struct nes_device , struct nes_cqp_request , int);
	542	int nes_arp_table(struct nes_device , u32, u8 , u32);
	543	void nes_mh_fix(unsigned long);
	544	void nes_clc(unsigned long);
	545	void nes_dump_mem(unsigned int, void *, int);
	546	u32 nes_crc32(u32, u32, u32, u32, u8 *, u32, u32, u32);
	547
	548	#endif /* __NES_H */