path: root/drivers/block/rsxx/core.c

/*
* Filename: core.c
*
*
* Authors: Joshua Morris <josh.h.morris@us.ibm.com>
*	Philip Kelleher <pjk1939@linux.vnet.ibm.com>
*
* (C) Copyright 2013 IBM Corporation
*
* 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 of the
* License, 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/reboot.h>
#include <linux/slab.h>
#include <linux/bitops.h>
#include <linux/delay.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>

#include <linux/genhd.h>
#include <linux/idr.h>

#include "rsxx_priv.h"
#include "rsxx_cfg.h"

#define NO_LEGACY 0
#define SYNC_START_TIMEOUT (10 * 60) /* 10 minutes */

MODULE_DESCRIPTION("IBM Flash Adapter 900GB Full Height Device Driver");
MODULE_AUTHOR("Joshua Morris/Philip Kelleher, IBM");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRIVER_VERSION);

static unsigned int force_legacy = NO_LEGACY;
module_param(force_legacy, uint, 0444);
MODULE_PARM_DESC(force_legacy, "Force the use of legacy type PCI interrupts");

static unsigned int sync_start = 1;
module_param(sync_start, uint, 0444);
MODULE_PARM_DESC(sync_start, "On by Default: Driver load will not complete "
			     "until the card startup has completed.");

static DEFINE_IDA(rsxx_disk_ida);
static DEFINE_SPINLOCK(rsxx_ida_lock);

/* --------------------Debugfs Setup ------------------- */

struct rsxx_cram {
	u32 f_pos;
	u32 offset;
	void *i_private;
};

static int rsxx_attr_pci_regs_show(struct seq_file *m, void *p)
{
	struct rsxx_cardinfo *card = m->private;

	seq_printf(m, "HWID		0x%08x\n",
					ioread32(card->regmap + HWID));
	seq_printf(m, "SCRATCH		0x%08x\n",
					ioread32(card->regmap + SCRATCH));
	seq_printf(m, "IER		0x%08x\n",
					ioread32(card->regmap + IER));
	seq_printf(m, "IPR		0x%08x\n",
					ioread32(card->regmap + IPR));
	seq_printf(m, "CREG_CMD		0x%08x\n",
					ioread32(card->regmap + CREG_CMD));
	seq_printf(m, "CREG_ADD		0x%08x\n",
					ioread32(card->regmap + CREG_ADD));
	seq_printf(m, "CREG_CNT		0x%08x\n",
					ioread32(card->regmap + CREG_CNT));
	seq_printf(m, "CREG_STAT	0x%08x\n",
					ioread32(card->regmap + CREG_STAT));
	seq_printf(m, "CREG_DATA0	0x%08x\n",
					ioread32(card->regmap + CREG_DATA0));
	seq_printf(m, "CREG_DATA1	0x%08x\n",
					ioread32(card->regmap + CREG_DATA1));
	seq_printf(m, "CREG_DATA2	0x%08x\n",
					ioread32(card->regmap + CREG_DATA2));
	seq_printf(m, "CREG_DATA3	0x%08x\n",
					ioread32(card->regmap + CREG_DATA3));
	seq_printf(m, "CREG_DATA4	0x%08x\n",
					ioread32(card->regmap + CREG_DATA4));
	seq_printf(m, "CREG_DATA5	0x%08x\n",
					ioread32(card->regmap + CREG_DATA5));
	seq_printf(m, "CREG_DATA6	0x%08x\n",
					ioread32(card->regmap + CREG_DATA6));
	seq_printf(m, "CREG_DATA7	0x%08x\n",
					ioread32(card->regmap + CREG_DATA7));
	seq_printf(m, "INTR_COAL	0x%08x