/*
 * Copyright (C) 2009-2012 Cray, Inc.
 *
 *   Author: Nic Henke <nic@cray.com>
 *   Author: James Shimek <jshimek@cray.com>
 *
 *   This file is part of Lustre, http://www.lustre.org.
 *
 *   Lustre is free software; you can redistribute it and/or
 *   modify it under the terms of version 2 of the GNU General Public
 *   License as published by the Free Software Foundation.
 *
 *   Lustre 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 Lustre; if not, write to the Free Software
 *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */
#ifndef _GNILND_GEMINI_H
#define _GNILND_GEMINI_H

#ifndef _GNILND_HSS_OPS_H
# error "must include gnilnd_hss_ops.h first"
#endif

/* Set HW related values */
#define GNILND_BASE_TIMEOUT        60            /* default sane timeout */
#define GNILND_CHECKSUM_DEFAULT     3            /* all on for Gemini */

#define GNILND_REVERSE_RDMA	    GNILND_REVERSE_NONE
#define GNILND_RDMA_DLVR_OPTION     GNI_DLVMODE_PERFORMANCE

/* plug in our functions for use on the simulator */
#if !defined(GNILND_USE_RCA)

#define kgnilnd_hw_hb()              do {} while(0)

/* fake a table that'd work for lookups in SimNow */

typedef struct kgn_nid_entry {
	__u32   nid;
	__u32   nicaddr;
} kgn_nid_entry_t;

/* Gemini SimNow has a hard coded table to use - no RCA there */
#define GNILND_MAX_NID_TABLE    0xffffffff

/* this is all of the nodes defined in the Baker SimNow "sim_platforms" page */
static kgn_nid_entry_t kgn_nid_table[] = {
	{0x1, 0x100}, {0x2, 0x101}, {0x3, 0x104}, {0x4, 0x105},
	{0x5, 0x108}, {0x6, 0x109}, {0x7, 0x10c}, {0x8, 0x10d},
	{0x9, 0x110}, {0xa, 0x111}, {0xb, 0x114}, {0xc, 0x115},
	{0xd, 0x118}, {0xe, 0x119}, {0xf, 0x11c}, {0x10, 0x11d},
	{0x11, 0x120}, {0x12, 0x121}, {0x13, 0x124}, {0x14, 0x125},
	{0x15, 0x128}, {0x16, 0x129}, {0x17, 0x12c}, {0x18, 0x12d},
	{0x19, 0x130}, {0x1a, 0x131}, {0x1b, 0x134}, {0x1c, 0x135},
	{0x1d, 0x138}, {0x1e, 0x139}, {0x1f, 0x13c}, {0x20, 0x13d},
	{0x21, 0x140}, {0x22, 0x141}, {0x23, 0x144}, {0x24, 0x145},
	{0x25, 0x148}, {0x26, 0x149}, {0x27, 0x14c}, {0x28, 0x14d},
	{0x29, 0x150}, {0x2a, 0x151}, {0x2b, 0x154}, {0x2c, 0x155},
	{0x2d, 0x158}, {0x2e, 0x159}, {0x2f, 0x15c}, {0x30, 0x15d},
	{0x31, 0x160}, {0x32, 0x161}, {0x33, 0x164}, {0x3d, 0x178},
	{0x34, 0x165}, {0x3e, 0x179}, {0x35, 0x168}, {0x3f, 0x17c},
	{0x36, 0x169}, {0x40, 0x17d}, {0x37, 0x16c}, {0x41, 0x180},
	{0x38, 0x16d}, {0x42, 0x181}, {0x39, 0x170}, {0x3a, 0x171},
	{0x3b, 0x174}, {0x3c, 0x175}, {0x43, 0x184}, {0x44, 0x185},
	{0x45, 0x188}, {0x46, 0x189}, {0x47, 0x18c}, {0x48, 0x18d},
	/* entries after this are for 'dead' peer tests */
	{0x63, 0x1ff}, {0x111, 0x209},
	{GNILND_MAX_NID_TABLE, GNILND_MAX_NID_TABLE}
};

static inline int
kgnilnd_nid_to_nicaddrs(__u32 nid, int numnic, __u32 *nicaddr)
{
	int i;
	/* GNILND_NO_RCA, so use hardcoded table for Gemini SimNow */
	if (numnic > 1) {
		CERROR("manual nid2nic translation doesn't support"
		       "multiple nic addrs (you asked for %d)\n",
			numnic);
		return -EINVAL;
	}
	for (i = 0; ; i++) {
		if (kgn_nid_table[i].nid == GNILND_MAX_NID_TABLE) {
			CERROR("could not translate %u to a NIC "
			       "address\n", nid);
			return -ESRCH;
		}
		if (kgn_nid_table[i].nid == nid) {
			*nicaddr = kgn_nid_table[i].nicaddr;
			CDEBUG(D_NETTRACE, "Sim nid %d -> nic 0x%x\n", nid, *nicaddr);

			return 1;
		}
	}
}

static inline int
kgnilnd_nicaddr_to_nid(__u32 nicaddr, __u32 *nid)
{
	int i;
	/* GNILND_RCA_NOT_HOME, so use hardcoded table for SimNow */
	for (i = 0; ; i++) {
		if (kgn_nid_table[i].nicaddr == GNILND_MAX_NID_TABLE) {
			CERROR("could not translate NIC address "
				"%u\n",
				nicaddr);
			return -ESRCH;
		}
		if (kgn_nid_table[i].nicaddr == nicaddr) {
			*nid = kgn_nid_table[i].nid;
			return 1;
		}
	}
}

static inline int
kgnilnd_setup_nic_translation(__u32 device_id)
{
	LCONSOLE_INFO("using Gemini SimNow nid table for RCA translation\n");

	/* no real setup for Gemini Sim, just log the console message */

	return 0;
}

#endif /* GNILND_USE_RCA */


#endif /* _GNILND_GEMINI_H */