3466 lines
89 KiB
C
3466 lines
89 KiB
C
/*
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* NinjaSCSI-32Bi Cardbus, NinjaSCSI-32UDE PCI/CardBus SCSI driver
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* Copyright (C) 2001, 2002, 2003
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* YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>
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* GOTO Masanori <gotom@debian.or.jp>, <gotom@debian.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*
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* Revision History:
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* 1.0: Initial Release.
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* 1.1: Add /proc SDTR status.
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* Remove obsolete error handler nsp32_reset.
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* Some clean up.
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* 1.2: PowerPC (big endian) support.
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*/
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#include <linux/version.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/timer.h>
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#include <linux/ioport.h>
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#include <linux/major.h>
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#include <linux/blkdev.h>
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#include <linux/interrupt.h>
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#include <linux/pci.h>
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#include <linux/delay.h>
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#include <linux/ctype.h>
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#include <linux/dma-mapping.h>
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#include <asm/dma.h>
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#include <asm/system.h>
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#include <asm/io.h>
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#include <scsi/scsi.h>
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#include <scsi/scsi_cmnd.h>
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#include <scsi/scsi_device.h>
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#include <scsi/scsi_host.h>
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#include <scsi/scsi_ioctl.h>
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#include "nsp32.h"
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/***********************************************************************
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* Module parameters
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*/
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static int trans_mode = 0; /* default: BIOS */
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module_param (trans_mode, int, 0);
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MODULE_PARM_DESC(trans_mode, "transfer mode (0: BIOS(default) 1: Async 2: Ultra20M");
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#define ASYNC_MODE 1
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#define ULTRA20M_MODE 2
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static int auto_param = 0; /* default: ON */
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module_param (auto_param, bool, 0);
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MODULE_PARM_DESC(auto_param, "AutoParameter mode (0: ON(default) 1: OFF)");
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static int disc_priv = 1; /* default: OFF */
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module_param (disc_priv, bool, 0);
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MODULE_PARM_DESC(disc_priv, "disconnection privilege mode (0: ON 1: OFF(default))");
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MODULE_AUTHOR("YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>, GOTO Masanori <gotom@debian.or.jp>");
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MODULE_DESCRIPTION("Workbit NinjaSCSI-32Bi/UDE CardBus/PCI SCSI host bus adapter module");
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MODULE_LICENSE("GPL");
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static const char *nsp32_release_version = "1.2";
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/****************************************************************************
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* Supported hardware
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*/
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static struct pci_device_id nsp32_pci_table[] __devinitdata = {
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{
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.vendor = PCI_VENDOR_ID_IODATA,
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.device = PCI_DEVICE_ID_NINJASCSI_32BI_CBSC_II,
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.subvendor = PCI_ANY_ID,
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.subdevice = PCI_ANY_ID,
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.driver_data = MODEL_IODATA,
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},
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{
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.vendor = PCI_VENDOR_ID_WORKBIT,
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.device = PCI_DEVICE_ID_NINJASCSI_32BI_KME,
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.subvendor = PCI_ANY_ID,
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.subdevice = PCI_ANY_ID,
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.driver_data = MODEL_KME,
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},
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{
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.vendor = PCI_VENDOR_ID_WORKBIT,
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.device = PCI_DEVICE_ID_NINJASCSI_32BI_WBT,
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.subvendor = PCI_ANY_ID,
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.subdevice = PCI_ANY_ID,
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.driver_data = MODEL_WORKBIT,
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},
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{
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.vendor = PCI_VENDOR_ID_WORKBIT,
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.device = PCI_DEVICE_ID_WORKBIT_STANDARD,
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.subvendor = PCI_ANY_ID,
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.subdevice = PCI_ANY_ID,
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.driver_data = MODEL_PCI_WORKBIT,
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},
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{
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.vendor = PCI_VENDOR_ID_WORKBIT,
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.device = PCI_DEVICE_ID_NINJASCSI_32BI_LOGITEC,
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.subvendor = PCI_ANY_ID,
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.subdevice = PCI_ANY_ID,
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.driver_data = MODEL_LOGITEC,
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},
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{
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.vendor = PCI_VENDOR_ID_WORKBIT,
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.device = PCI_DEVICE_ID_NINJASCSI_32BIB_LOGITEC,
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.subvendor = PCI_ANY_ID,
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.subdevice = PCI_ANY_ID,
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.driver_data = MODEL_PCI_LOGITEC,
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},
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{
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.vendor = PCI_VENDOR_ID_WORKBIT,
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.device = PCI_DEVICE_ID_NINJASCSI_32UDE_MELCO,
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.subvendor = PCI_ANY_ID,
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.subdevice = PCI_ANY_ID,
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.driver_data = MODEL_PCI_MELCO,
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},
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{
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.vendor = PCI_VENDOR_ID_WORKBIT,
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.device = PCI_DEVICE_ID_NINJASCSI_32UDE_MELCO_II,
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.subvendor = PCI_ANY_ID,
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.subdevice = PCI_ANY_ID,
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.driver_data = MODEL_PCI_MELCO,
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},
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{0,0,},
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};
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MODULE_DEVICE_TABLE(pci, nsp32_pci_table);
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static nsp32_hw_data nsp32_data_base; /* probe <-> detect glue */
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/*
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* Period/AckWidth speed conversion table
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*
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* Note: This period/ackwidth speed table must be in descending order.
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*/
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static nsp32_sync_table nsp32_sync_table_40M[] = {
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/* {PNo, AW, SP, EP, SREQ smpl} Speed(MB/s) Period AckWidth */
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{0x1, 0, 0x0c, 0x0c, SMPL_40M}, /* 20.0 : 50ns, 25ns */
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{0x2, 0, 0x0d, 0x18, SMPL_40M}, /* 13.3 : 75ns, 25ns */
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{0x3, 1, 0x19, 0x19, SMPL_40M}, /* 10.0 : 100ns, 50ns */
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{0x4, 1, 0x1a, 0x1f, SMPL_20M}, /* 8.0 : 125ns, 50ns */
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{0x5, 2, 0x20, 0x25, SMPL_20M}, /* 6.7 : 150ns, 75ns */
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{0x6, 2, 0x26, 0x31, SMPL_20M}, /* 5.7 : 175ns, 75ns */
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{0x7, 3, 0x32, 0x32, SMPL_20M}, /* 5.0 : 200ns, 100ns */
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{0x8, 3, 0x33, 0x38, SMPL_10M}, /* 4.4 : 225ns, 100ns */
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{0x9, 3, 0x39, 0x3e, SMPL_10M}, /* 4.0 : 250ns, 100ns */
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};
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static nsp32_sync_table nsp32_sync_table_20M[] = {
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{0x1, 0, 0x19, 0x19, SMPL_40M}, /* 10.0 : 100ns, 50ns */
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{0x2, 0, 0x1a, 0x25, SMPL_20M}, /* 6.7 : 150ns, 50ns */
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{0x3, 1, 0x26, 0x32, SMPL_20M}, /* 5.0 : 200ns, 100ns */
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{0x4, 1, 0x33, 0x3e, SMPL_10M}, /* 4.0 : 250ns, 100ns */
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{0x5, 2, 0x3f, 0x4b, SMPL_10M}, /* 3.3 : 300ns, 150ns */
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{0x6, 2, 0x4c, 0x57, SMPL_10M}, /* 2.8 : 350ns, 150ns */
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{0x7, 3, 0x58, 0x64, SMPL_10M}, /* 2.5 : 400ns, 200ns */
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{0x8, 3, 0x65, 0x70, SMPL_10M}, /* 2.2 : 450ns, 200ns */
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{0x9, 3, 0x71, 0x7d, SMPL_10M}, /* 2.0 : 500ns, 200ns */
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};
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static nsp32_sync_table nsp32_sync_table_pci[] = {
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{0x1, 0, 0x0c, 0x0f, SMPL_40M}, /* 16.6 : 60ns, 30ns */
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{0x2, 0, 0x10, 0x16, SMPL_40M}, /* 11.1 : 90ns, 30ns */
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{0x3, 1, 0x17, 0x1e, SMPL_20M}, /* 8.3 : 120ns, 60ns */
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{0x4, 1, 0x1f, 0x25, SMPL_20M}, /* 6.7 : 150ns, 60ns */
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{0x5, 2, 0x26, 0x2d, SMPL_20M}, /* 5.6 : 180ns, 90ns */
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{0x6, 2, 0x2e, 0x34, SMPL_10M}, /* 4.8 : 210ns, 90ns */
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{0x7, 3, 0x35, 0x3c, SMPL_10M}, /* 4.2 : 240ns, 120ns */
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{0x8, 3, 0x3d, 0x43, SMPL_10M}, /* 3.7 : 270ns, 120ns */
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{0x9, 3, 0x44, 0x4b, SMPL_10M}, /* 3.3 : 300ns, 120ns */
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};
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/*
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* function declaration
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*/
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/* module entry point */
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static int __devinit nsp32_probe (struct pci_dev *, const struct pci_device_id *);
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static void __devexit nsp32_remove(struct pci_dev *);
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static int __init init_nsp32 (void);
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static void __exit exit_nsp32 (void);
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/* struct struct scsi_host_template */
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static int nsp32_proc_info (struct Scsi_Host *, char *, char **, off_t, int, int);
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static int nsp32_detect (struct pci_dev *pdev);
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static int nsp32_queuecommand(struct scsi_cmnd *,
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void (*done)(struct scsi_cmnd *));
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static const char *nsp32_info (struct Scsi_Host *);
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static int nsp32_release (struct Scsi_Host *);
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/* SCSI error handler */
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static int nsp32_eh_abort (struct scsi_cmnd *);
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static int nsp32_eh_bus_reset (struct scsi_cmnd *);
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static int nsp32_eh_host_reset(struct scsi_cmnd *);
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/* generate SCSI message */
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static void nsp32_build_identify(struct scsi_cmnd *);
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static void nsp32_build_nop (struct scsi_cmnd *);
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static void nsp32_build_reject (struct scsi_cmnd *);
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static void nsp32_build_sdtr (struct scsi_cmnd *, unsigned char, unsigned char);
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/* SCSI message handler */
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static int nsp32_busfree_occur(struct scsi_cmnd *, unsigned short);
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static void nsp32_msgout_occur (struct scsi_cmnd *);
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static void nsp32_msgin_occur (struct scsi_cmnd *, unsigned long, unsigned short);
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static int nsp32_setup_sg_table (struct scsi_cmnd *);
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static int nsp32_selection_autopara(struct scsi_cmnd *);
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static int nsp32_selection_autoscsi(struct scsi_cmnd *);
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static void nsp32_scsi_done (struct scsi_cmnd *);
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static int nsp32_arbitration (struct scsi_cmnd *, unsigned int);
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static int nsp32_reselection (struct scsi_cmnd *, unsigned char);
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static void nsp32_adjust_busfree (struct scsi_cmnd *, unsigned int);
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static void nsp32_restart_autoscsi (struct scsi_cmnd *, unsigned short);
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/* SCSI SDTR */
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static void nsp32_analyze_sdtr (struct scsi_cmnd *);
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static int nsp32_search_period_entry(nsp32_hw_data *, nsp32_target *, unsigned char);
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static void nsp32_set_async (nsp32_hw_data *, nsp32_target *);
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static void nsp32_set_max_sync (nsp32_hw_data *, nsp32_target *, unsigned char *, unsigned char *);
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static void nsp32_set_sync_entry (nsp32_hw_data *, nsp32_target *, int, unsigned char);
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/* SCSI bus status handler */
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static void nsp32_wait_req (nsp32_hw_data *, int);
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static void nsp32_wait_sack (nsp32_hw_data *, int);
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static void nsp32_sack_assert (nsp32_hw_data *);
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static void nsp32_sack_negate (nsp32_hw_data *);
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static void nsp32_do_bus_reset(nsp32_hw_data *);
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/* hardware interrupt handler */
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static irqreturn_t do_nsp32_isr(int, void *);
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/* initialize hardware */
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static int nsp32hw_init(nsp32_hw_data *);
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/* EEPROM handler */
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static int nsp32_getprom_param (nsp32_hw_data *);
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static int nsp32_getprom_at24 (nsp32_hw_data *);
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static int nsp32_getprom_c16 (nsp32_hw_data *);
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static void nsp32_prom_start (nsp32_hw_data *);
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static void nsp32_prom_stop (nsp32_hw_data *);
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static int nsp32_prom_read (nsp32_hw_data *, int);
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static int nsp32_prom_read_bit (nsp32_hw_data *);
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static void nsp32_prom_write_bit(nsp32_hw_data *, int);
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static void nsp32_prom_set (nsp32_hw_data *, int, int);
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static int nsp32_prom_get (nsp32_hw_data *, int);
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/* debug/warning/info message */
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static void nsp32_message (const char *, int, char *, char *, ...);
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#ifdef NSP32_DEBUG
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static void nsp32_dmessage(const char *, int, int, char *, ...);
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#endif
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/*
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* max_sectors is currently limited up to 128.
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*/
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static struct scsi_host_template nsp32_template = {
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.proc_name = "nsp32",
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.name = "Workbit NinjaSCSI-32Bi/UDE",
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.proc_info = nsp32_proc_info,
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.info = nsp32_info,
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.queuecommand = nsp32_queuecommand,
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.can_queue = 1,
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.sg_tablesize = NSP32_SG_SIZE,
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.max_sectors = 128,
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.cmd_per_lun = 1,
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.this_id = NSP32_HOST_SCSIID,
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.use_clustering = DISABLE_CLUSTERING,
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.use_sg_chaining = ENABLE_SG_CHAINING,
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.eh_abort_handler = nsp32_eh_abort,
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.eh_bus_reset_handler = nsp32_eh_bus_reset,
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.eh_host_reset_handler = nsp32_eh_host_reset,
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/* .highmem_io = 1, */
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};
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#include "nsp32_io.h"
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/***********************************************************************
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* debug, error print
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*/
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#ifndef NSP32_DEBUG
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# define NSP32_DEBUG_MASK 0x000000
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# define nsp32_msg(type, args...) nsp32_message ("", 0, (type), args)
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# define nsp32_dbg(mask, args...) /* */
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#else
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# define NSP32_DEBUG_MASK 0xffffff
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# define nsp32_msg(type, args...) \
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nsp32_message (__FUNCTION__, __LINE__, (type), args)
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# define nsp32_dbg(mask, args...) \
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nsp32_dmessage(__FUNCTION__, __LINE__, (mask), args)
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#endif
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#define NSP32_DEBUG_QUEUECOMMAND BIT(0)
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#define NSP32_DEBUG_REGISTER BIT(1)
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#define NSP32_DEBUG_AUTOSCSI BIT(2)
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#define NSP32_DEBUG_INTR BIT(3)
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#define NSP32_DEBUG_SGLIST BIT(4)
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#define NSP32_DEBUG_BUSFREE BIT(5)
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#define NSP32_DEBUG_CDB_CONTENTS BIT(6)
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#define NSP32_DEBUG_RESELECTION BIT(7)
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#define NSP32_DEBUG_MSGINOCCUR BIT(8)
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#define NSP32_DEBUG_EEPROM BIT(9)
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#define NSP32_DEBUG_MSGOUTOCCUR BIT(10)
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#define NSP32_DEBUG_BUSRESET BIT(11)
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#define NSP32_DEBUG_RESTART BIT(12)
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#define NSP32_DEBUG_SYNC BIT(13)
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#define NSP32_DEBUG_WAIT BIT(14)
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#define NSP32_DEBUG_TARGETFLAG BIT(15)
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#define NSP32_DEBUG_PROC BIT(16)
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#define NSP32_DEBUG_INIT BIT(17)
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#define NSP32_SPECIAL_PRINT_REGISTER BIT(20)
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#define NSP32_DEBUG_BUF_LEN 100
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static void nsp32_message(const char *func, int line, char *type, char *fmt, ...)
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{
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va_list args;
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char buf[NSP32_DEBUG_BUF_LEN];
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va_start(args, fmt);
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vsnprintf(buf, sizeof(buf), fmt, args);
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va_end(args);
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#ifndef NSP32_DEBUG
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printk("%snsp32: %s\n", type, buf);
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#else
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printk("%snsp32: %s (%d): %s\n", type, func, line, buf);
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#endif
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}
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#ifdef NSP32_DEBUG
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static void nsp32_dmessage(const char *func, int line, int mask, char *fmt, ...)
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{
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va_list args;
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char buf[NSP32_DEBUG_BUF_LEN];
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va_start(args, fmt);
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vsnprintf(buf, sizeof(buf), fmt, args);
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va_end(args);
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if (mask & NSP32_DEBUG_MASK) {
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printk("nsp32-debug: 0x%x %s (%d): %s\n", mask, func, line, buf);
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}
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}
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#endif
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#ifdef NSP32_DEBUG
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# include "nsp32_debug.c"
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#else
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# define show_command(arg) /* */
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# define show_busphase(arg) /* */
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# define show_autophase(arg) /* */
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#endif
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/*
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* IDENTIFY Message
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*/
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static void nsp32_build_identify(struct scsi_cmnd *SCpnt)
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{
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nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
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int pos = data->msgout_len;
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int mode = FALSE;
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/* XXX: Auto DiscPriv detection is progressing... */
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if (disc_priv == 0) {
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/* mode = TRUE; */
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}
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data->msgoutbuf[pos] = IDENTIFY(mode, SCpnt->device->lun); pos++;
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data->msgout_len = pos;
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}
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/*
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* SDTR Message Routine
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*/
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static void nsp32_build_sdtr(struct scsi_cmnd *SCpnt,
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unsigned char period,
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unsigned char offset)
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{
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nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
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int pos = data->msgout_len;
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data->msgoutbuf[pos] = EXTENDED_MESSAGE; pos++;
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data->msgoutbuf[pos] = EXTENDED_SDTR_LEN; pos++;
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data->msgoutbuf[pos] = EXTENDED_SDTR; pos++;
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data->msgoutbuf[pos] = period; pos++;
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data->msgoutbuf[pos] = offset; pos++;
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data->msgout_len = pos;
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}
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/*
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* No Operation Message
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*/
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static void nsp32_build_nop(struct scsi_cmnd *SCpnt)
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{
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nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
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int pos = data->msgout_len;
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if (pos != 0) {
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nsp32_msg(KERN_WARNING,
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"Some messages are already contained!");
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return;
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|
}
|
|
|
|
data->msgoutbuf[pos] = NOP; pos++;
|
|
data->msgout_len = pos;
|
|
}
|
|
|
|
/*
|
|
* Reject Message
|
|
*/
|
|
static void nsp32_build_reject(struct scsi_cmnd *SCpnt)
|
|
{
|
|
nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
|
|
int pos = data->msgout_len;
|
|
|
|
data->msgoutbuf[pos] = MESSAGE_REJECT; pos++;
|
|
data->msgout_len = pos;
|
|
}
|
|
|
|
/*
|
|
* timer
|
|
*/
|
|
#if 0
|
|
static void nsp32_start_timer(struct scsi_cmnd *SCpnt, int time)
|
|
{
|
|
unsigned int base = SCpnt->host->io_port;
|
|
|
|
nsp32_dbg(NSP32_DEBUG_INTR, "timer=%d", time);
|
|
|
|
if (time & (~TIMER_CNT_MASK)) {
|
|
nsp32_dbg(NSP32_DEBUG_INTR, "timer set overflow");
|
|
}
|
|
|
|
nsp32_write2(base, TIMER_SET, time & TIMER_CNT_MASK);
|
|
}
|
|
#endif
|
|
|
|
|
|
/*
|
|
* set SCSI command and other parameter to asic, and start selection phase
|
|
*/
|
|
static int nsp32_selection_autopara(struct scsi_cmnd *SCpnt)
|
|
{
|
|
nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
|
|
unsigned int base = SCpnt->device->host->io_port;
|
|
unsigned int host_id = SCpnt->device->host->this_id;
|
|
unsigned char target = scmd_id(SCpnt);
|
|
nsp32_autoparam *param = data->autoparam;
|
|
unsigned char phase;
|
|
int i, ret;
|
|
unsigned int msgout;
|
|
u16_le s;
|
|
|
|
nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "in");
|
|
|
|
/*
|
|
* check bus free
|
|
*/
|
|
phase = nsp32_read1(base, SCSI_BUS_MONITOR);
|
|
if (phase != BUSMON_BUS_FREE) {
|
|
nsp32_msg(KERN_WARNING, "bus busy");
|
|
show_busphase(phase & BUSMON_PHASE_MASK);
|
|
SCpnt->result = DID_BUS_BUSY << 16;
|
|
return FALSE;
|
|
}
|
|
|
|
/*
|
|
* message out
|
|
*
|
|
* Note: If the range of msgout_len is 1 - 3, fill scsi_msgout.
|
|
* over 3 messages needs another routine.
|
|
*/
|
|
if (data->msgout_len == 0) {
|
|
nsp32_msg(KERN_ERR, "SCSI MsgOut without any message!");
|
|
SCpnt->result = DID_ERROR << 16;
|
|
return FALSE;
|
|
} else if (data->msgout_len > 0 && data->msgout_len <= 3) {
|
|
msgout = 0;
|
|
for (i = 0; i < data->msgout_len; i++) {
|
|
/*
|
|
* the sending order of the message is:
|
|
* MCNT 3: MSG#0 -> MSG#1 -> MSG#2
|
|
* MCNT 2: MSG#1 -> MSG#2
|
|
* MCNT 1: MSG#2
|
|
*/
|
|
msgout >>= 8;
|
|
msgout |= ((unsigned int)(data->msgoutbuf[i]) << 24);
|
|
}
|
|
msgout |= MV_VALID; /* MV valid */
|
|
msgout |= (unsigned int)data->msgout_len; /* len */
|
|
} else {
|
|
/* data->msgout_len > 3 */
|
|
msgout = 0;
|
|
}
|
|
|
|
// nsp_dbg(NSP32_DEBUG_AUTOSCSI, "sel time out=0x%x\n", nsp32_read2(base, SEL_TIME_OUT));
|
|
// nsp32_write2(base, SEL_TIME_OUT, SEL_TIMEOUT_TIME);
|
|
|
|
/*
|
|
* setup asic parameter
|
|
*/
|
|
memset(param, 0, sizeof(nsp32_autoparam));
|
|
|
|
/* cdb */
|
|
for (i = 0; i < SCpnt->cmd_len; i++) {
|
|
param->cdb[4 * i] = SCpnt->cmnd[i];
|
|
}
|
|
|
|
/* outgoing messages */
|
|
param->msgout = cpu_to_le32(msgout);
|
|
|
|
/* syncreg, ackwidth, target id, SREQ sampling rate */
|
|
param->syncreg = data->cur_target->syncreg;
|
|
param->ackwidth = data->cur_target->ackwidth;
|
|
param->target_id = BIT(host_id) | BIT(target);
|
|
param->sample_reg = data->cur_target->sample_reg;
|
|
|
|
// nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "sample rate=0x%x\n", data->cur_target->sample_reg);
|
|
|
|
/* command control */
|
|
param->command_control = cpu_to_le16(CLEAR_CDB_FIFO_POINTER |
|
|
AUTOSCSI_START |
|
|
AUTO_MSGIN_00_OR_04 |
|
|
AUTO_MSGIN_02 |
|
|
AUTO_ATN );
|
|
|
|
|
|
/* transfer control */
|
|
s = 0;
|
|
switch (data->trans_method) {
|
|
case NSP32_TRANSFER_BUSMASTER:
|
|
s |= BM_START;
|
|
break;
|
|
case NSP32_TRANSFER_MMIO:
|
|
s |= CB_MMIO_MODE;
|
|
break;
|
|
case NSP32_TRANSFER_PIO:
|
|
s |= CB_IO_MODE;
|
|
break;
|
|
default:
|
|
nsp32_msg(KERN_ERR, "unknown trans_method");
|
|
break;
|
|
}
|
|
/*
|
|
* OR-ed BLIEND_MODE, FIFO intr is decreased, instead of PCI bus waits.
|
|
* For bus master transfer, it's taken off.
|
|
*/
|
|
s |= (TRANSFER_GO | ALL_COUNTER_CLR);
|
|
param->transfer_control = cpu_to_le16(s);
|
|
|
|
/* sg table addr */
|
|
param->sgt_pointer = cpu_to_le32(data->cur_lunt->sglun_paddr);
|
|
|
|
/*
|
|
* transfer parameter to ASIC
|
|
*/
|
|
nsp32_write4(base, SGT_ADR, data->auto_paddr);
|
|
nsp32_write2(base, COMMAND_CONTROL, CLEAR_CDB_FIFO_POINTER |
|
|
AUTO_PARAMETER );
|
|
|
|
/*
|
|
* Check arbitration
|
|
*/
|
|
ret = nsp32_arbitration(SCpnt, base);
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
/*
|
|
* Selection with AUTO SCSI (without AUTO PARAMETER)
|
|
*/
|
|
static int nsp32_selection_autoscsi(struct scsi_cmnd *SCpnt)
|
|
{
|
|
nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
|
|
unsigned int base = SCpnt->device->host->io_port;
|
|
unsigned int host_id = SCpnt->device->host->this_id;
|
|
unsigned char target = scmd_id(SCpnt);
|
|
unsigned char phase;
|
|
int status;
|
|
unsigned short command = 0;
|
|
unsigned int msgout = 0;
|
|
unsigned short execph;
|
|
int i;
|
|
|
|
nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "in");
|
|
|
|
/*
|
|
* IRQ disable
|
|
*/
|
|
nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);
|
|
|
|
/*
|
|
* check bus line
|
|
*/
|
|
phase = nsp32_read1(base, SCSI_BUS_MONITOR);
|
|
if(((phase & BUSMON_BSY) == 1) || (phase & BUSMON_SEL) == 1) {
|
|
nsp32_msg(KERN_WARNING, "bus busy");
|
|
SCpnt->result = DID_BUS_BUSY << 16;
|
|
status = 1;
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* clear execph
|
|
*/
|
|
execph = nsp32_read2(base, SCSI_EXECUTE_PHASE);
|
|
|
|
/*
|
|
* clear FIFO counter to set CDBs
|
|
*/
|
|
nsp32_write2(base, COMMAND_CONTROL, CLEAR_CDB_FIFO_POINTER);
|
|
|
|
/*
|
|
* set CDB0 - CDB15
|
|
*/
|
|
for (i = 0; i < SCpnt->cmd_len; i++) {
|
|
nsp32_write1(base, COMMAND_DATA, SCpnt->cmnd[i]);
|
|
}
|
|
nsp32_dbg(NSP32_DEBUG_CDB_CONTENTS, "CDB[0]=[0x%x]", SCpnt->cmnd[0]);
|
|
|
|
/*
|
|
* set SCSIOUT LATCH(initiator)/TARGET(target) (OR-ed) ID
|
|
*/
|
|
nsp32_write1(base, SCSI_OUT_LATCH_TARGET_ID, BIT(host_id) | BIT(target));
|
|
|
|
/*
|
|
* set SCSI MSGOUT REG
|
|
*
|
|
* Note: If the range of msgout_len is 1 - 3, fill scsi_msgout.
|
|
* over 3 messages needs another routine.
|
|
*/
|
|
if (data->msgout_len == 0) {
|
|
nsp32_msg(KERN_ERR, "SCSI MsgOut without any message!");
|
|
SCpnt->result = DID_ERROR << 16;
|
|
status = 1;
|
|
goto out;
|
|
} else if (data->msgout_len > 0 && data->msgout_len <= 3) {
|
|
msgout = 0;
|
|
for (i = 0; i < data->msgout_len; i++) {
|
|
/*
|
|
* the sending order of the message is:
|
|
* MCNT 3: MSG#0 -> MSG#1 -> MSG#2
|
|
* MCNT 2: MSG#1 -> MSG#2
|
|
* MCNT 1: MSG#2
|
|
*/
|
|
msgout >>= 8;
|
|
msgout |= ((unsigned int)(data->msgoutbuf[i]) << 24);
|
|
}
|
|
msgout |= MV_VALID; /* MV valid */
|
|
msgout |= (unsigned int)data->msgout_len; /* len */
|
|
nsp32_write4(base, SCSI_MSG_OUT, msgout);
|
|
} else {
|
|
/* data->msgout_len > 3 */
|
|
nsp32_write4(base, SCSI_MSG_OUT, 0);
|
|
}
|
|
|
|
/*
|
|
* set selection timeout(= 250ms)
|
|
*/
|
|
nsp32_write2(base, SEL_TIME_OUT, SEL_TIMEOUT_TIME);
|
|
|
|
/*
|
|
* set SREQ hazard killer sampling rate
|
|
*
|
|
* TODO: sample_rate (BASE+0F) is 0 when internal clock = 40MHz.
|
|
* check other internal clock!
|
|
*/
|
|
nsp32_write1(base, SREQ_SMPL_RATE, data->cur_target->sample_reg);
|
|
|
|
/*
|
|
* clear Arbit
|
|
*/
|
|
nsp32_write1(base, SET_ARBIT, ARBIT_CLEAR);
|
|
|
|
/*
|
|
* set SYNCREG
|
|
* Don't set BM_START_ADR before setting this register.
|
|
*/
|
|
nsp32_write1(base, SYNC_REG, data->cur_target->syncreg);
|
|
|
|
/*
|
|
* set ACKWIDTH
|
|
*/
|
|
nsp32_write1(base, ACK_WIDTH, data->cur_target->ackwidth);
|
|
|
|
nsp32_dbg(NSP32_DEBUG_AUTOSCSI,
|
|
"syncreg=0x%x, ackwidth=0x%x, sgtpaddr=0x%x, id=0x%x",
|
|
nsp32_read1(base, SYNC_REG), nsp32_read1(base, ACK_WIDTH),
|
|
nsp32_read4(base, SGT_ADR), nsp32_read1(base, SCSI_OUT_LATCH_TARGET_ID));
|
|
nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "msgout_len=%d, msgout=0x%x",
|
|
data->msgout_len, msgout);
|
|
|
|
/*
|
|
* set SGT ADDR (physical address)
|
|
*/
|
|
nsp32_write4(base, SGT_ADR, data->cur_lunt->sglun_paddr);
|
|
|
|
/*
|
|
* set TRANSFER CONTROL REG
|
|
*/
|
|
command = 0;
|
|
command |= (TRANSFER_GO | ALL_COUNTER_CLR);
|
|
if (data->trans_method & NSP32_TRANSFER_BUSMASTER) {
|
|
if (scsi_bufflen(SCpnt) > 0) {
|
|
command |= BM_START;
|
|
}
|
|
} else if (data->trans_method & NSP32_TRANSFER_MMIO) {
|
|
command |= CB_MMIO_MODE;
|
|
} else if (data->trans_method & NSP32_TRANSFER_PIO) {
|
|
command |= CB_IO_MODE;
|
|
}
|
|
nsp32_write2(base, TRANSFER_CONTROL, command);
|
|
|
|
/*
|
|
* start AUTO SCSI, kick off arbitration
|
|
*/
|
|
command = (CLEAR_CDB_FIFO_POINTER |
|
|
AUTOSCSI_START |
|
|
AUTO_MSGIN_00_OR_04 |
|
|
AUTO_MSGIN_02 |
|
|
AUTO_ATN );
|
|
nsp32_write2(base, COMMAND_CONTROL, command);
|
|
|
|
/*
|
|
* Check arbitration
|
|
*/
|
|
status = nsp32_arbitration(SCpnt, base);
|
|
|
|
out:
|
|
/*
|
|
* IRQ enable
|
|
*/
|
|
nsp32_write2(base, IRQ_CONTROL, 0);
|
|
|
|
return status;
|
|
}
|
|
|
|
|
|
/*
|
|
* Arbitration Status Check
|
|
*
|
|
* Note: Arbitration counter is waited during ARBIT_GO is not lifting.
|
|
* Using udelay(1) consumes CPU time and system time, but
|
|
* arbitration delay time is defined minimal 2.4us in SCSI
|
|
* specification, thus udelay works as coarse grained wait timer.
|
|
*/
|
|
static int nsp32_arbitration(struct scsi_cmnd *SCpnt, unsigned int base)
|
|
{
|
|
unsigned char arbit;
|
|
int status = TRUE;
|
|
int time = 0;
|
|
|
|
do {
|
|
arbit = nsp32_read1(base, ARBIT_STATUS);
|
|
time++;
|
|
} while ((arbit & (ARBIT_WIN | ARBIT_FAIL)) == 0 &&
|
|
(time <= ARBIT_TIMEOUT_TIME));
|
|
|
|
nsp32_dbg(NSP32_DEBUG_AUTOSCSI,
|
|
"arbit: 0x%x, delay time: %d", arbit, time);
|
|
|
|
if (arbit & ARBIT_WIN) {
|
|
/* Arbitration succeeded */
|
|
SCpnt->result = DID_OK << 16;
|
|
nsp32_index_write1(base, EXT_PORT, LED_ON); /* PCI LED on */
|
|
} else if (arbit & ARBIT_FAIL) {
|
|
/* Arbitration failed */
|
|
SCpnt->result = DID_BUS_BUSY << 16;
|
|
status = FALSE;
|
|
} else {
|
|
/*
|
|
* unknown error or ARBIT_GO timeout,
|
|
* something lock up! guess no connection.
|
|
*/
|
|
nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "arbit timeout");
|
|
SCpnt->result = DID_NO_CONNECT << 16;
|
|
status = FALSE;
|
|
}
|
|
|
|
/*
|
|
* clear Arbit
|
|
*/
|
|
nsp32_write1(base, SET_ARBIT, ARBIT_CLEAR);
|
|
|
|
return status;
|
|
}
|
|
|
|
|
|
/*
|
|
* reselection
|
|
*
|
|
* Note: This reselection routine is called from msgin_occur,
|
|
* reselection target id&lun must be already set.
|
|
* SCSI-2 says IDENTIFY implies RESTORE_POINTER operation.
|
|
*/
|
|
static int nsp32_reselection(struct scsi_cmnd *SCpnt, unsigned char newlun)
|
|
{
|
|
nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
|
|
unsigned int host_id = SCpnt->device->host->this_id;
|
|
unsigned int base = SCpnt->device->host->io_port;
|
|
unsigned char tmpid, newid;
|
|
|
|
nsp32_dbg(NSP32_DEBUG_RESELECTION, "enter");
|
|
|
|
/*
|
|
* calculate reselected SCSI ID
|
|
*/
|
|
tmpid = nsp32_read1(base, RESELECT_ID);
|
|
tmpid &= (~BIT(host_id));
|
|
newid = 0;
|
|
while (tmpid) {
|
|
if (tmpid & 1) {
|
|
break;
|
|
}
|
|
tmpid >>= 1;
|
|
newid++;
|
|
}
|
|
|
|
/*
|
|
* If reselected New ID:LUN is not existed
|
|
* or current nexus is not existed, unexpected
|
|
* reselection is occurred. Send reject message.
|
|
*/
|
|
if (newid >= ARRAY_SIZE(data->lunt) || newlun >= ARRAY_SIZE(data->lunt[0])) {
|
|
nsp32_msg(KERN_WARNING, "unknown id/lun");
|
|
return FALSE;
|
|
} else if(data->lunt[newid][newlun].SCpnt == NULL) {
|
|
nsp32_msg(KERN_WARNING, "no SCSI command is processing");
|
|
return FALSE;
|
|
}
|
|
|
|
data->cur_id = newid;
|
|
data->cur_lun = newlun;
|
|
data->cur_target = &(data->target[newid]);
|
|
data->cur_lunt = &(data->lunt[newid][newlun]);
|
|
|
|
/* reset SACK/SavedACK counter (or ALL clear?) */
|
|
nsp32_write4(base, CLR_COUNTER, CLRCOUNTER_ALLMASK);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/*
|
|
* nsp32_setup_sg_table - build scatter gather list for transfer data
|
|
* with bus master.
|
|
*
|
|
* Note: NinjaSCSI-32Bi/UDE bus master can not transfer over 64KB at a time.
|
|
*/
|
|
static int nsp32_setup_sg_table(struct scsi_cmnd *SCpnt)
|
|
{
|
|
nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
|
|
struct scatterlist *sg;
|
|
nsp32_sgtable *sgt = data->cur_lunt->sglun->sgt;
|
|
int num, i;
|
|
u32_le l;
|
|
|
|
if (sgt == NULL) {
|
|
nsp32_dbg(NSP32_DEBUG_SGLIST, "SGT == null");
|
|
return FALSE;
|
|
}
|
|
|
|
num = scsi_dma_map(SCpnt);
|
|
if (!num)
|
|
return TRUE;
|
|
else if (num < 0)
|
|
return FALSE;
|
|
else {
|
|
scsi_for_each_sg(SCpnt, sg, num, i) {
|
|
/*
|
|
* Build nsp32_sglist, substitute sg dma addresses.
|
|
*/
|
|
sgt[i].addr = cpu_to_le32(sg_dma_address(sg));
|
|
sgt[i].len = cpu_to_le32(sg_dma_len(sg));
|
|
|
|
if (le32_to_cpu(sgt[i].len) > 0x10000) {
|
|
nsp32_msg(KERN_ERR,
|
|
"can't transfer over 64KB at a time, size=0x%lx", le32_to_cpu(sgt[i].len));
|
|
return FALSE;
|
|
}
|
|
nsp32_dbg(NSP32_DEBUG_SGLIST,
|
|
"num 0x%x : addr 0x%lx len 0x%lx",
|
|
i,
|
|
le32_to_cpu(sgt[i].addr),
|
|
le32_to_cpu(sgt[i].len ));
|
|
}
|
|
|
|
/* set end mark */
|
|
l = le32_to_cpu(sgt[num-1].len);
|
|
sgt[num-1].len = cpu_to_le32(l | SGTEND);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static int nsp32_queuecommand(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
|
|
{
|
|
nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
|
|
nsp32_target *target;
|
|
nsp32_lunt *cur_lunt;
|
|
int ret;
|
|
|
|
nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND,
|
|
"enter. target: 0x%x LUN: 0x%x cmnd: 0x%x cmndlen: 0x%x "
|
|
"use_sg: 0x%x reqbuf: 0x%lx reqlen: 0x%x",
|
|
SCpnt->device->id, SCpnt->device->lun, SCpnt->cmnd[0], SCpnt->cmd_len,
|
|
scsi_sg_count(SCpnt), scsi_sglist(SCpnt), scsi_bufflen(SCpnt));
|
|
|
|
if (data->CurrentSC != NULL) {
|
|
nsp32_msg(KERN_ERR, "Currentsc != NULL. Cancel this command request");
|
|
data->CurrentSC = NULL;
|
|
SCpnt->result = DID_NO_CONNECT << 16;
|
|
done(SCpnt);
|
|
return 0;
|
|
}
|
|
|
|
/* check target ID is not same as this initiator ID */
|
|
if (scmd_id(SCpnt) == SCpnt->device->host->this_id) {
|
|
nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, "terget==host???");
|
|
SCpnt->result = DID_BAD_TARGET << 16;
|
|
done(SCpnt);
|
|
return 0;
|
|
}
|
|
|
|
/* check target LUN is allowable value */
|
|
if (SCpnt->device->lun >= MAX_LUN) {
|
|
nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, "no more lun");
|
|
SCpnt->result = DID_BAD_TARGET << 16;
|
|
done(SCpnt);
|
|
return 0;
|
|
}
|
|
|
|
show_command(SCpnt);
|
|
|
|
SCpnt->scsi_done = done;
|
|
data->CurrentSC = SCpnt;
|
|
SCpnt->SCp.Status = CHECK_CONDITION;
|
|
SCpnt->SCp.Message = 0;
|
|
scsi_set_resid(SCpnt, scsi_bufflen(SCpnt));
|
|
|
|
SCpnt->SCp.ptr = (char *)scsi_sglist(SCpnt);
|
|
SCpnt->SCp.this_residual = scsi_bufflen(SCpnt);
|
|
SCpnt->SCp.buffer = NULL;
|
|
SCpnt->SCp.buffers_residual = 0;
|
|
|
|
/* initialize data */
|
|
data->msgout_len = 0;
|
|
data->msgin_len = 0;
|
|
cur_lunt = &(data->lunt[SCpnt->device->id][SCpnt->device->lun]);
|
|
cur_lunt->SCpnt = SCpnt;
|
|
cur_lunt->save_datp = 0;
|
|
cur_lunt->msgin03 = FALSE;
|
|
data->cur_lunt = cur_lunt;
|
|
data->cur_id = SCpnt->device->id;
|
|
data->cur_lun = SCpnt->device->lun;
|
|
|
|
ret = nsp32_setup_sg_table(SCpnt);
|
|
if (ret == FALSE) {
|
|
nsp32_msg(KERN_ERR, "SGT fail");
|
|
SCpnt->result = DID_ERROR << 16;
|
|
nsp32_scsi_done(SCpnt);
|
|
return 0;
|
|
}
|
|
|
|
/* Build IDENTIFY */
|
|
nsp32_build_identify(SCpnt);
|
|
|
|
/*
|
|
* If target is the first time to transfer after the reset
|
|
* (target don't have SDTR_DONE and SDTR_INITIATOR), sync
|
|
* message SDTR is needed to do synchronous transfer.
|
|
*/
|
|
target = &data->target[scmd_id(SCpnt)];
|
|
data->cur_target = target;
|
|
|
|
if (!(target->sync_flag & (SDTR_DONE | SDTR_INITIATOR | SDTR_TARGET))) {
|
|
unsigned char period, offset;
|
|
|
|
if (trans_mode != ASYNC_MODE) {
|
|
nsp32_set_max_sync(data, target, &period, &offset);
|
|
nsp32_build_sdtr(SCpnt, period, offset);
|
|
target->sync_flag |= SDTR_INITIATOR;
|
|
} else {
|
|
nsp32_set_async(data, target);
|
|
target->sync_flag |= SDTR_DONE;
|
|
}
|
|
|
|
nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND,
|
|
"SDTR: entry: %d start_period: 0x%x offset: 0x%x\n",
|
|
target->limit_entry, period, offset);
|
|
} else if (target->sync_flag & SDTR_INITIATOR) {
|
|
/*
|
|
* It was negotiating SDTR with target, sending from the
|
|
* initiator, but there are no chance to remove this flag.
|
|
* Set async because we don't get proper negotiation.
|
|
*/
|
|
nsp32_set_async(data, target);
|
|
target->sync_flag &= ~SDTR_INITIATOR;
|
|
target->sync_flag |= SDTR_DONE;
|
|
|
|
nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND,
|
|
"SDTR_INITIATOR: fall back to async");
|
|
} else if (target->sync_flag & SDTR_TARGET) {
|
|
/*
|
|
* It was negotiating SDTR with target, sending from target,
|
|
* but there are no chance to remove this flag. Set async
|
|
* because we don't get proper negotiation.
|
|
*/
|
|
nsp32_set_async(data, target);
|
|
target->sync_flag &= ~SDTR_TARGET;
|
|
target->sync_flag |= SDTR_DONE;
|
|
|
|
nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND,
|
|
"Unknown SDTR from target is reached, fall back to async.");
|
|
}
|
|
|
|
nsp32_dbg(NSP32_DEBUG_TARGETFLAG,
|
|
"target: %d sync_flag: 0x%x syncreg: 0x%x ackwidth: 0x%x",
|
|
SCpnt->device->id, target->sync_flag, target->syncreg,
|
|
target->ackwidth);
|
|
|
|
/* Selection */
|
|
if (auto_param == 0) {
|
|
ret = nsp32_selection_autopara(SCpnt);
|
|
} else {
|
|
ret = nsp32_selection_autoscsi(SCpnt);
|
|
}
|
|
|
|
if (ret != TRUE) {
|
|
nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, "selection fail");
|
|
nsp32_scsi_done(SCpnt);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* initialize asic */
|
|
static int nsp32hw_init(nsp32_hw_data *data)
|
|
{
|
|
unsigned int base = data->BaseAddress;
|
|
unsigned short irq_stat;
|
|
unsigned long lc_reg;
|
|
unsigned char power;
|
|
|
|
lc_reg = nsp32_index_read4(base, CFG_LATE_CACHE);
|
|
if ((lc_reg & 0xff00) == 0) {
|
|
lc_reg |= (0x20 << 8);
|
|
nsp32_index_write2(base, CFG_LATE_CACHE, lc_reg & 0xffff);
|
|
}
|
|
|
|
nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);
|
|
nsp32_write2(base, TRANSFER_CONTROL, 0);
|
|
nsp32_write4(base, BM_CNT, 0);
|
|
nsp32_write2(base, SCSI_EXECUTE_PHASE, 0);
|
|
|
|
do {
|
|
irq_stat = nsp32_read2(base, IRQ_STATUS);
|
|
nsp32_dbg(NSP32_DEBUG_INIT, "irq_stat 0x%x", irq_stat);
|
|
} while (irq_stat & IRQSTATUS_ANY_IRQ);
|
|
|
|
/*
|
|
* Fill FIFO_FULL_SHLD, FIFO_EMPTY_SHLD. Below parameter is
|
|
* designated by specification.
|
|
*/
|
|
if ((data->trans_method & NSP32_TRANSFER_PIO) ||
|
|
(data->trans_method & NSP32_TRANSFER_MMIO)) {
|
|
nsp32_index_write1(base, FIFO_FULL_SHLD_COUNT, 0x40);
|
|
nsp32_index_write1(base, FIFO_EMPTY_SHLD_COUNT, 0x40);
|
|
} else if (data->trans_method & NSP32_TRANSFER_BUSMASTER) {
|
|
nsp32_index_write1(base, FIFO_FULL_SHLD_COUNT, 0x10);
|
|
nsp32_index_write1(base, FIFO_EMPTY_SHLD_COUNT, 0x60);
|
|
} else {
|
|
nsp32_dbg(NSP32_DEBUG_INIT, "unknown transfer mode");
|
|
}
|
|
|
|
nsp32_dbg(NSP32_DEBUG_INIT, "full 0x%x emp 0x%x",
|
|
nsp32_index_read1(base, FIFO_FULL_SHLD_COUNT),
|
|
nsp32_index_read1(base, FIFO_EMPTY_SHLD_COUNT));
|
|
|
|
nsp32_index_write1(base, CLOCK_DIV, data->clock);
|
|
nsp32_index_write1(base, BM_CYCLE, MEMRD_CMD1 | SGT_AUTO_PARA_MEMED_CMD);
|
|
nsp32_write1(base, PARITY_CONTROL, 0); /* parity check is disable */
|
|
|
|
/*
|
|
* initialize MISC_WRRD register
|
|
*
|
|
* Note: Designated parameters is obeyed as following:
|
|
* MISC_SCSI_DIRECTION_DETECTOR_SELECT: It must be set.
|
|
* MISC_MASTER_TERMINATION_SELECT: It must be set.
|
|
* MISC_BMREQ_NEGATE_TIMING_SEL: It should be set.
|
|
* MISC_AUTOSEL_TIMING_SEL: It should be set.
|
|
* MISC_BMSTOP_CHANGE2_NONDATA_PHASE: It should be set.
|
|
* MISC_DELAYED_BMSTART: It's selected for safety.
|
|
*
|
|
* Note: If MISC_BMSTOP_CHANGE2_NONDATA_PHASE is set, then
|
|
* we have to set TRANSFERCONTROL_BM_START as 0 and set
|
|
* appropriate value before restarting bus master transfer.
|
|
*/
|
|
nsp32_index_write2(base, MISC_WR,
|
|
(SCSI_DIRECTION_DETECTOR_SELECT |
|
|
DELAYED_BMSTART |
|
|
MASTER_TERMINATION_SELECT |
|
|
BMREQ_NEGATE_TIMING_SEL |
|
|
AUTOSEL_TIMING_SEL |
|
|
BMSTOP_CHANGE2_NONDATA_PHASE));
|
|
|
|
nsp32_index_write1(base, TERM_PWR_CONTROL, 0);
|
|
power = nsp32_index_read1(base, TERM_PWR_CONTROL);
|
|
if (!(power & SENSE)) {
|
|
nsp32_msg(KERN_INFO, "term power on");
|
|
nsp32_index_write1(base, TERM_PWR_CONTROL, BPWR);
|
|
}
|
|
|
|
nsp32_write2(base, TIMER_SET, TIMER_STOP);
|
|
nsp32_write2(base, TIMER_SET, TIMER_STOP); /* Required 2 times */
|
|
|
|
nsp32_write1(base, SYNC_REG, 0);
|
|
nsp32_write1(base, ACK_WIDTH, 0);
|
|
nsp32_write2(base, SEL_TIME_OUT, SEL_TIMEOUT_TIME);
|
|
|
|
/*
|
|
* enable to select designated IRQ (except for
|
|
* IRQSELECT_SERR, IRQSELECT_PERR, IRQSELECT_BMCNTERR)
|
|
*/
|
|
nsp32_index_write2(base, IRQ_SELECT, IRQSELECT_TIMER_IRQ |
|
|
IRQSELECT_SCSIRESET_IRQ |
|
|
IRQSELECT_FIFO_SHLD_IRQ |
|
|
IRQSELECT_RESELECT_IRQ |
|
|
IRQSELECT_PHASE_CHANGE_IRQ |
|
|
IRQSELECT_AUTO_SCSI_SEQ_IRQ |
|
|
// IRQSELECT_BMCNTERR_IRQ |
|
|
IRQSELECT_TARGET_ABORT_IRQ |
|
|
IRQSELECT_MASTER_ABORT_IRQ );
|
|
nsp32_write2(base, IRQ_CONTROL, 0);
|
|
|
|
/* PCI LED off */
|
|
nsp32_index_write1(base, EXT_PORT_DDR, LED_OFF);
|
|
nsp32_index_write1(base, EXT_PORT, LED_OFF);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/* interrupt routine */
|
|
static irqreturn_t do_nsp32_isr(int irq, void *dev_id)
|
|
{
|
|
nsp32_hw_data *data = dev_id;
|
|
unsigned int base = data->BaseAddress;
|
|
struct scsi_cmnd *SCpnt = data->CurrentSC;
|
|
unsigned short auto_stat, irq_stat, trans_stat;
|
|
unsigned char busmon, busphase;
|
|
unsigned long flags;
|
|
int ret;
|
|
int handled = 0;
|
|
struct Scsi_Host *host = data->Host;
|
|
|
|
spin_lock_irqsave(host->host_lock, flags);
|
|
|
|
/*
|
|
* IRQ check, then enable IRQ mask
|
|
*/
|
|
irq_stat = nsp32_read2(base, IRQ_STATUS);
|
|
nsp32_dbg(NSP32_DEBUG_INTR,
|
|
"enter IRQ: %d, IRQstatus: 0x%x", irq, irq_stat);
|
|
/* is this interrupt comes from Ninja asic? */
|
|
if ((irq_stat & IRQSTATUS_ANY_IRQ) == 0) {
|
|
nsp32_dbg(NSP32_DEBUG_INTR, "shared interrupt: irq other 0x%x", irq_stat);
|
|
goto out2;
|
|
}
|
|
handled = 1;
|
|
nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);
|
|
|
|
busmon = nsp32_read1(base, SCSI_BUS_MONITOR);
|
|
busphase = busmon & BUSMON_PHASE_MASK;
|
|
|
|
trans_stat = nsp32_read2(base, TRANSFER_STATUS);
|
|
if ((irq_stat == 0xffff) && (trans_stat == 0xffff)) {
|
|
nsp32_msg(KERN_INFO, "card disconnect");
|
|
if (data->CurrentSC != NULL) {
|
|
nsp32_msg(KERN_INFO, "clean up current SCSI command");
|
|
SCpnt->result = DID_BAD_TARGET << 16;
|
|
nsp32_scsi_done(SCpnt);
|
|
}
|
|
goto out;
|
|
}
|
|
|
|
/* Timer IRQ */
|
|
if (irq_stat & IRQSTATUS_TIMER_IRQ) {
|
|
nsp32_dbg(NSP32_DEBUG_INTR, "timer stop");
|
|
nsp32_write2(base, TIMER_SET, TIMER_STOP);
|
|
goto out;
|
|
}
|
|
|
|
/* SCSI reset */
|
|
if (irq_stat & IRQSTATUS_SCSIRESET_IRQ) {
|
|
nsp32_msg(KERN_INFO, "detected someone do bus reset");
|
|
nsp32_do_bus_reset(data);
|
|
if (SCpnt != NULL) {
|
|
SCpnt->result = DID_RESET << 16;
|
|
nsp32_scsi_done(SCpnt);
|
|
}
|
|
goto out;
|
|
}
|
|
|
|
if (SCpnt == NULL) {
|
|
nsp32_msg(KERN_WARNING, "SCpnt==NULL this can't be happened");
|
|
nsp32_msg(KERN_WARNING, "irq_stat=0x%x trans_stat=0x%x", irq_stat, trans_stat);
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* AutoSCSI Interrupt.
|
|
* Note: This interrupt is occurred when AutoSCSI is finished. Then
|
|
* check SCSIEXECUTEPHASE, and do appropriate action. Each phases are
|
|
* recorded when AutoSCSI sequencer has been processed.
|
|
*/
|
|
if(irq_stat & IRQSTATUS_AUTOSCSI_IRQ) {
|
|
/* getting SCSI executed phase */
|
|
auto_stat = nsp32_read2(base, SCSI_EXECUTE_PHASE);
|
|
nsp32_write2(base, SCSI_EXECUTE_PHASE, 0);
|
|
|
|
/* Selection Timeout, go busfree phase. */
|
|
if (auto_stat & SELECTION_TIMEOUT) {
|
|
nsp32_dbg(NSP32_DEBUG_INTR,
|
|
"selection timeout occurred");
|
|
|
|
SCpnt->result = DID_TIME_OUT << 16;
|
|
nsp32_scsi_done(SCpnt);
|
|
goto out;
|
|
}
|
|
|
|
if (auto_stat & MSGOUT_PHASE) {
|
|
/*
|
|
* MsgOut phase was processed.
|
|
* If MSG_IN_OCCUER is not set, then MsgOut phase is
|
|
* completed. Thus, msgout_len must reset. Otherwise,
|
|
* nothing to do here. If MSG_OUT_OCCUER is occurred,
|
|
* then we will encounter the condition and check.
|
|
*/
|
|
if (!(auto_stat & MSG_IN_OCCUER) &&
|
|
(data->msgout_len <= 3)) {
|
|
/*
|
|
* !MSG_IN_OCCUER && msgout_len <=3
|
|
* ---> AutoSCSI with MSGOUTreg is processed.
|
|
*/
|
|
data->msgout_len = 0;
|
|
};
|
|
|
|
nsp32_dbg(NSP32_DEBUG_INTR, "MsgOut phase processed");
|
|
}
|
|
|
|
if ((auto_stat & DATA_IN_PHASE) &&
|
|
(scsi_get_resid(SCpnt) > 0) &&
|
|
((nsp32_read2(base, FIFO_REST_CNT) & FIFO_REST_MASK) != 0)) {
|
|
printk( "auto+fifo\n");
|
|
//nsp32_pio_read(SCpnt);
|
|
}
|
|
|
|
if (auto_stat & (DATA_IN_PHASE | DATA_OUT_PHASE)) {
|
|
/* DATA_IN_PHASE/DATA_OUT_PHASE was processed. */
|
|
nsp32_dbg(NSP32_DEBUG_INTR,
|
|
"Data in/out phase processed");
|
|
|
|
/* read BMCNT, SGT pointer addr */
|
|
nsp32_dbg(NSP32_DEBUG_INTR, "BMCNT=0x%lx",
|
|
nsp32_read4(base, BM_CNT));
|
|
nsp32_dbg(NSP32_DEBUG_INTR, "addr=0x%lx",
|
|
nsp32_read4(base, SGT_ADR));
|
|
nsp32_dbg(NSP32_DEBUG_INTR, "SACK=0x%lx",
|
|
nsp32_read4(base, SACK_CNT));
|
|
nsp32_dbg(NSP32_DEBUG_INTR, "SSACK=0x%lx",
|
|
nsp32_read4(base, SAVED_SACK_CNT));
|
|
|
|
scsi_set_resid(SCpnt, 0); /* all data transfered! */
|
|
}
|
|
|
|
/*
|
|
* MsgIn Occur
|
|
*/
|
|
if (auto_stat & MSG_IN_OCCUER) {
|
|
nsp32_msgin_occur(SCpnt, irq_stat, auto_stat);
|
|
}
|
|
|
|
/*
|
|
* MsgOut Occur
|
|
*/
|
|
if (auto_stat & MSG_OUT_OCCUER) {
|
|
nsp32_msgout_occur(SCpnt);
|
|
}
|
|
|
|
/*
|
|
* Bus Free Occur
|
|
*/
|
|
if (auto_stat & BUS_FREE_OCCUER) {
|
|
ret = nsp32_busfree_occur(SCpnt, auto_stat);
|
|
if (ret == TRUE) {
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if (auto_stat & STATUS_PHASE) {
|
|
/*
|
|
* Read CSB and substitute CSB for SCpnt->result
|
|
* to save status phase stutas byte.
|
|
* scsi error handler checks host_byte (DID_*:
|
|
* low level driver to indicate status), then checks
|
|
* status_byte (SCSI status byte).
|
|
*/
|
|
SCpnt->result = (int)nsp32_read1(base, SCSI_CSB_IN);
|
|
}
|
|
|
|
if (auto_stat & ILLEGAL_PHASE) {
|
|
/* Illegal phase is detected. SACK is not back. */
|
|
nsp32_msg(KERN_WARNING,
|
|
"AUTO SCSI ILLEGAL PHASE OCCUR!!!!");
|
|
|
|
/* TODO: currently we don't have any action... bus reset? */
|
|
|
|
/*
|
|
* To send back SACK, assert, wait, and negate.
|
|
*/
|
|
nsp32_sack_assert(data);
|
|
nsp32_wait_req(data, NEGATE);
|
|
nsp32_sack_negate(data);
|
|
|
|
}
|
|
|
|
if (auto_stat & COMMAND_PHASE) {
|
|
/* nothing to do */
|
|
nsp32_dbg(NSP32_DEBUG_INTR, "Command phase processed");
|
|
}
|
|
|
|
if (auto_stat & AUTOSCSI_BUSY) {
|
|
/* AutoSCSI is running */
|
|
}
|
|
|
|
show_autophase(auto_stat);
|
|
}
|
|
|
|
/* FIFO_SHLD_IRQ */
|
|
if (irq_stat & IRQSTATUS_FIFO_SHLD_IRQ) {
|
|
nsp32_dbg(NSP32_DEBUG_INTR, "FIFO IRQ");
|
|
|
|
switch(busphase) {
|
|
case BUSPHASE_DATA_OUT:
|
|
nsp32_dbg(NSP32_DEBUG_INTR, "fifo/write");
|
|
|
|
//nsp32_pio_write(SCpnt);
|
|
|
|
break;
|
|
|
|
case BUSPHASE_DATA_IN:
|
|
nsp32_dbg(NSP32_DEBUG_INTR, "fifo/read");
|
|
|
|
//nsp32_pio_read(SCpnt);
|
|
|
|
break;
|
|
|
|
case BUSPHASE_STATUS:
|
|
nsp32_dbg(NSP32_DEBUG_INTR, "fifo/status");
|
|
|
|
SCpnt->SCp.Status = nsp32_read1(base, SCSI_CSB_IN);
|
|
|
|
break;
|
|
default:
|
|
nsp32_dbg(NSP32_DEBUG_INTR, "fifo/other phase");
|
|
nsp32_dbg(NSP32_DEBUG_INTR, "irq_stat=0x%x trans_stat=0x%x", irq_stat, trans_stat);
|
|
show_busphase(busphase);
|
|
break;
|
|
}
|
|
|
|
goto out;
|
|
}
|
|
|
|
/* Phase Change IRQ */
|
|
if (irq_stat & IRQSTATUS_PHASE_CHANGE_IRQ) {
|
|
nsp32_dbg(NSP32_DEBUG_INTR, "phase change IRQ");
|
|
|
|
switch(busphase) {
|
|
case BUSPHASE_MESSAGE_IN:
|
|
nsp32_dbg(NSP32_DEBUG_INTR, "phase chg/msg in");
|
|
nsp32_msgin_occur(SCpnt, irq_stat, 0);
|
|
break;
|
|
default:
|
|
nsp32_msg(KERN_WARNING, "phase chg/other phase?");
|
|
nsp32_msg(KERN_WARNING, "irq_stat=0x%x trans_stat=0x%x\n",
|
|
irq_stat, trans_stat);
|
|
show_busphase(busphase);
|
|
break;
|
|
}
|
|
goto out;
|
|
}
|
|
|
|
/* PCI_IRQ */
|
|
if (irq_stat & IRQSTATUS_PCI_IRQ) {
|
|
nsp32_dbg(NSP32_DEBUG_INTR, "PCI IRQ occurred");
|
|
/* Do nothing */
|
|
}
|
|
|
|
/* BMCNTERR_IRQ */
|
|
if (irq_stat & IRQSTATUS_BMCNTERR_IRQ) {
|
|
nsp32_msg(KERN_ERR, "Received unexpected BMCNTERR IRQ! ");
|
|
/*
|
|
* TODO: To be implemented improving bus master
|
|
* transfer reliablity when BMCNTERR is occurred in
|
|
* AutoSCSI phase described in specification.
|
|
*/
|
|
}
|
|
|
|
#if 0
|
|
nsp32_dbg(NSP32_DEBUG_INTR,
|
|
"irq_stat=0x%x trans_stat=0x%x", irq_stat, trans_stat);
|
|
show_busphase(busphase);
|
|
#endif
|
|
|
|
out:
|
|
/* disable IRQ mask */
|
|
nsp32_write2(base, IRQ_CONTROL, 0);
|
|
|
|
out2:
|
|
spin_unlock_irqrestore(host->host_lock, flags);
|
|
|
|
nsp32_dbg(NSP32_DEBUG_INTR, "exit");
|
|
|
|
return IRQ_RETVAL(handled);
|
|
}
|
|
|
|
#undef SPRINTF
|
|
#define SPRINTF(args...) \
|
|
do { \
|
|
if(length > (pos - buffer)) { \
|
|
pos += snprintf(pos, length - (pos - buffer) + 1, ## args); \
|
|
nsp32_dbg(NSP32_DEBUG_PROC, "buffer=0x%p pos=0x%p length=%d %d\n", buffer, pos, length, length - (pos - buffer));\
|
|
} \
|
|
} while(0)
|
|
|
|
static int nsp32_proc_info(struct Scsi_Host *host, char *buffer, char **start,
|
|
off_t offset, int length, int inout)
|
|
{
|
|
char *pos = buffer;
|
|
int thislength;
|
|
unsigned long flags;
|
|
nsp32_hw_data *data;
|
|
int hostno;
|
|
unsigned int base;
|
|
unsigned char mode_reg;
|
|
int id, speed;
|
|
long model;
|
|
|
|
/* Write is not supported, just return. */
|
|
if (inout == TRUE) {
|
|
return -EINVAL;
|
|
}
|
|
|
|
hostno = host->host_no;
|
|
data = (nsp32_hw_data *)host->hostdata;
|
|
base = host->io_port;
|
|
|
|
SPRINTF("NinjaSCSI-32 status\n\n");
|
|
SPRINTF("Driver version: %s, $Revision: 1.33 $\n", nsp32_release_version);
|
|
SPRINTF("SCSI host No.: %d\n", hostno);
|
|
SPRINTF("IRQ: %d\n", host->irq);
|
|
SPRINTF("IO: 0x%lx-0x%lx\n", host->io_port, host->io_port + host->n_io_port - 1);
|
|
SPRINTF("MMIO(virtual address): 0x%lx-0x%lx\n", host->base, host->base + data->MmioLength - 1);
|
|
SPRINTF("sg_tablesize: %d\n", host->sg_tablesize);
|
|
SPRINTF("Chip revision: 0x%x\n", (nsp32_read2(base, INDEX_REG) >> 8) & 0xff);
|
|
|
|
mode_reg = nsp32_index_read1(base, CHIP_MODE);
|
|
model = data->pci_devid->driver_data;
|
|
|
|
#ifdef CONFIG_PM
|
|
SPRINTF("Power Management: %s\n", (mode_reg & OPTF) ? "yes" : "no");
|
|
#endif
|
|
SPRINTF("OEM: %ld, %s\n", (mode_reg & (OEM0|OEM1)), nsp32_model[model]);
|
|
|
|
spin_lock_irqsave(&(data->Lock), flags);
|
|
SPRINTF("CurrentSC: 0x%p\n\n", data->CurrentSC);
|
|
spin_unlock_irqrestore(&(data->Lock), flags);
|
|
|
|
|
|
SPRINTF("SDTR status\n");
|
|
for (id = 0; id < ARRAY_SIZE(data->target); id++) {
|
|
|
|
SPRINTF("id %d: ", id);
|
|
|
|
if (id == host->this_id) {
|
|
SPRINTF("----- NinjaSCSI-32 host adapter\n");
|
|
continue;
|
|
}
|
|
|
|
if (data->target[id].sync_flag == SDTR_DONE) {
|
|
if (data->target[id].period == 0 &&
|
|
data->target[id].offset == ASYNC_OFFSET ) {
|
|
SPRINTF("async");
|
|
} else {
|
|
SPRINTF(" sync");
|
|
}
|
|
} else {
|
|
SPRINTF(" none");
|
|
}
|
|
|
|
if (data->target[id].period != 0) {
|
|
|
|
speed = 1000000 / (data->target[id].period * 4);
|
|
|
|
SPRINTF(" transfer %d.%dMB/s, offset %d",
|
|
speed / 1000,
|
|
speed % 1000,
|
|
data->target[id].offset
|
|
);
|
|
}
|
|
SPRINTF("\n");
|
|
}
|
|
|
|
|
|
thislength = pos - (buffer + offset);
|
|
|
|
if(thislength < 0) {
|
|
*start = NULL;
|
|
return 0;
|
|
}
|
|
|
|
|
|
thislength = min(thislength, length);
|
|
*start = buffer + offset;
|
|
|
|
return thislength;
|
|
}
|
|
#undef SPRINTF
|
|
|
|
|
|
|
|
/*
|
|
* Reset parameters and call scsi_done for data->cur_lunt.
|
|
* Be careful setting SCpnt->result = DID_* before calling this function.
|
|
*/
|
|
static void nsp32_scsi_done(struct scsi_cmnd *SCpnt)
|
|
{
|
|
nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
|
|
unsigned int base = SCpnt->device->host->io_port;
|
|
|
|
scsi_dma_unmap(SCpnt);
|
|
|
|
/*
|
|
* clear TRANSFERCONTROL_BM_START
|
|
*/
|
|
nsp32_write2(base, TRANSFER_CONTROL, 0);
|
|
nsp32_write4(base, BM_CNT, 0);
|
|
|
|
/*
|
|
* call scsi_done
|
|
*/
|
|
(*SCpnt->scsi_done)(SCpnt);
|
|
|
|
/*
|
|
* reset parameters
|
|
*/
|
|
data->cur_lunt->SCpnt = NULL;
|
|
data->cur_lunt = NULL;
|
|
data->cur_target = NULL;
|
|
data->CurrentSC = NULL;
|
|
}
|
|
|
|
|
|
/*
|
|
* Bus Free Occur
|
|
*
|
|
* Current Phase is BUSFREE. AutoSCSI is automatically execute BUSFREE phase
|
|
* with ACK reply when below condition is matched:
|
|
* MsgIn 00: Command Complete.
|
|
* MsgIn 02: Save Data Pointer.
|
|
* MsgIn 04: Diconnect.
|
|
* In other case, unexpected BUSFREE is detected.
|
|
*/
|
|
static int nsp32_busfree_occur(struct scsi_cmnd *SCpnt, unsigned short execph)
|
|
{
|
|
nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
|
|
unsigned int base = SCpnt->device->host->io_port;
|
|
|
|
nsp32_dbg(NSP32_DEBUG_BUSFREE, "enter execph=0x%x", execph);
|
|
show_autophase(execph);
|
|
|
|
nsp32_write4(base, BM_CNT, 0);
|
|
nsp32_write2(base, TRANSFER_CONTROL, 0);
|
|
|
|
/*
|
|
* MsgIn 02: Save Data Pointer
|
|
*
|
|
* VALID:
|
|
* Save Data Pointer is received. Adjust pointer.
|
|
*
|
|
* NO-VALID:
|
|
* SCSI-3 says if Save Data Pointer is not received, then we restart
|
|
* processing and we can't adjust any SCSI data pointer in next data
|
|
* phase.
|
|
*/
|
|
if (execph & MSGIN_02_VALID) {
|
|
nsp32_dbg(NSP32_DEBUG_BUSFREE, "MsgIn02_Valid");
|
|
|
|
/*
|
|
* Check sack_cnt/saved_sack_cnt, then adjust sg table if
|
|
* needed.
|
|
*/
|
|
if (!(execph & MSGIN_00_VALID) &&
|
|
((execph & DATA_IN_PHASE) || (execph & DATA_OUT_PHASE))) {
|
|
unsigned int sacklen, s_sacklen;
|
|
|
|
/*
|
|
* Read SACK count and SAVEDSACK count, then compare.
|
|
*/
|
|
sacklen = nsp32_read4(base, SACK_CNT );
|
|
s_sacklen = nsp32_read4(base, SAVED_SACK_CNT);
|
|
|
|
/*
|
|
* If SAVEDSACKCNT == 0, it means SavedDataPointer is
|
|
* come after data transfering.
|
|
*/
|
|
if (s_sacklen > 0) {
|
|
/*
|
|
* Comparing between sack and savedsack to
|
|
* check the condition of AutoMsgIn03.
|
|
*
|
|
* If they are same, set msgin03 == TRUE,
|
|
* COMMANDCONTROL_AUTO_MSGIN_03 is enabled at
|
|
* reselection. On the other hand, if they
|
|
* aren't same, set msgin03 == FALSE, and
|
|
* COMMANDCONTROL_AUTO_MSGIN_03 is disabled at
|
|
* reselection.
|
|
*/
|
|
if (sacklen != s_sacklen) {
|
|
data->cur_lunt->msgin03 = FALSE;
|
|
} else {
|
|
data->cur_lunt->msgin03 = TRUE;
|
|
}
|
|
|
|
nsp32_adjust_busfree(SCpnt, s_sacklen);
|
|
}
|
|
}
|
|
|
|
/* This value has not substitude with valid value yet... */
|
|
//data->cur_lunt->save_datp = data->cur_datp;
|
|
} else {
|
|
/*
|
|
* no processing.
|
|
*/
|
|
}
|
|
|
|
if (execph & MSGIN_03_VALID) {
|
|
/* MsgIn03 was valid to be processed. No need processing. */
|
|
}
|
|
|
|
/*
|
|
* target SDTR check
|
|
*/
|
|
if (data->cur_target->sync_flag & SDTR_INITIATOR) {
|
|
/*
|
|
* SDTR negotiation pulled by the initiator has not
|
|
* finished yet. Fall back to ASYNC mode.
|
|
*/
|
|
nsp32_set_async(data, data->cur_target);
|
|
data->cur_target->sync_flag &= ~SDTR_INITIATOR;
|
|
data->cur_target->sync_flag |= SDTR_DONE;
|
|
} else if (data->cur_target->sync_flag & SDTR_TARGET) {
|
|
/*
|
|
* SDTR negotiation pulled by the target has been
|
|
* negotiating.
|
|
*/
|
|
if (execph & (MSGIN_00_VALID | MSGIN_04_VALID)) {
|
|
/*
|
|
* If valid message is received, then
|
|
* negotiation is succeeded.
|
|
*/
|
|
} else {
|
|
/*
|
|
* On the contrary, if unexpected bus free is
|
|
* occurred, then negotiation is failed. Fall
|
|
* back to ASYNC mode.
|
|
*/
|
|
nsp32_set_async(data, data->cur_target);
|
|
}
|
|
data->cur_target->sync_flag &= ~SDTR_TARGET;
|
|
data->cur_target->sync_flag |= SDTR_DONE;
|
|
}
|
|
|
|
/*
|
|
* It is always ensured by SCSI standard that initiator
|
|
* switches into Bus Free Phase after
|
|
* receiving message 00 (Command Complete), 04 (Disconnect).
|
|
* It's the reason that processing here is valid.
|
|
*/
|
|
if (execph & MSGIN_00_VALID) {
|
|
/* MsgIn 00: Command Complete */
|
|
nsp32_dbg(NSP32_DEBUG_BUSFREE, "command complete");
|
|
|
|
SCpnt->SCp.Status = nsp32_read1(base, SCSI_CSB_IN);
|
|
SCpnt->SCp.Message = 0;
|
|
nsp32_dbg(NSP32_DEBUG_BUSFREE,
|
|
"normal end stat=0x%x resid=0x%x\n",
|
|
SCpnt->SCp.Status, scsi_get_resid(SCpnt));
|
|
SCpnt->result = (DID_OK << 16) |
|
|
(SCpnt->SCp.Message << 8) |
|
|
(SCpnt->SCp.Status << 0);
|
|
nsp32_scsi_done(SCpnt);
|
|
/* All operation is done */
|
|
return TRUE;
|
|
} else if (execph & MSGIN_04_VALID) {
|
|
/* MsgIn 04: Disconnect */
|
|
SCpnt->SCp.Status = nsp32_read1(base, SCSI_CSB_IN);
|
|
SCpnt->SCp.Message = 4;
|
|
|
|
nsp32_dbg(NSP32_DEBUG_BUSFREE, "disconnect");
|
|
return TRUE;
|
|
} else {
|
|
/* Unexpected bus free */
|
|
nsp32_msg(KERN_WARNING, "unexpected bus free occurred");
|
|
|
|
/* DID_ERROR? */
|
|
//SCpnt->result = (DID_OK << 16) | (SCpnt->SCp.Message << 8) | (SCpnt->SCp.Status << 0);
|
|
SCpnt->result = DID_ERROR << 16;
|
|
nsp32_scsi_done(SCpnt);
|
|
return TRUE;
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/*
|
|
* nsp32_adjust_busfree - adjusting SG table
|
|
*
|
|
* Note: This driver adjust the SG table using SCSI ACK
|
|
* counter instead of BMCNT counter!
|
|
*/
|
|
static void nsp32_adjust_busfree(struct scsi_cmnd *SCpnt, unsigned int s_sacklen)
|
|
{
|
|
nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
|
|
int old_entry = data->cur_entry;
|
|
int new_entry;
|
|
int sg_num = data->cur_lunt->sg_num;
|
|
nsp32_sgtable *sgt = data->cur_lunt->sglun->sgt;
|
|
unsigned int restlen, sentlen;
|
|
u32_le len, addr;
|
|
|
|
nsp32_dbg(NSP32_DEBUG_SGLIST, "old resid=0x%x", scsi_get_resid(SCpnt));
|
|
|
|
/* adjust saved SACK count with 4 byte start address boundary */
|
|
s_sacklen -= le32_to_cpu(sgt[old_entry].addr) & 3;
|
|
|
|
/*
|
|
* calculate new_entry from sack count and each sgt[].len
|
|
* calculate the byte which is intent to send
|
|
*/
|
|
sentlen = 0;
|
|
for (new_entry = old_entry; new_entry < sg_num; new_entry++) {
|
|
sentlen += (le32_to_cpu(sgt[new_entry].len) & ~SGTEND);
|
|
if (sentlen > s_sacklen) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* all sgt is processed */
|
|
if (new_entry == sg_num) {
|
|
goto last;
|
|
}
|
|
|
|
if (sentlen == s_sacklen) {
|
|
/* XXX: confirm it's ok or not */
|
|
/* In this case, it's ok because we are at
|
|
the head element of the sg. restlen is correctly calculated. */
|
|
}
|
|
|
|
/* calculate the rest length for transfering */
|
|
restlen = sentlen - s_sacklen;
|
|
|
|
/* update adjusting current SG table entry */
|
|
len = le32_to_cpu(sgt[new_entry].len);
|
|
addr = le32_to_cpu(sgt[new_entry].addr);
|
|
addr += (len - restlen);
|
|
sgt[new_entry].addr = cpu_to_le32(addr);
|
|
sgt[new_entry].len = cpu_to_le32(restlen);
|
|
|
|
/* set cur_entry with new_entry */
|
|
data->cur_entry = new_entry;
|
|
|
|
return;
|
|
|
|
last:
|
|
if (scsi_get_resid(SCpnt) < sentlen) {
|
|
nsp32_msg(KERN_ERR, "resid underflow");
|
|
}
|
|
|
|
scsi_set_resid(SCpnt, scsi_get_resid(SCpnt) - sentlen);
|
|
nsp32_dbg(NSP32_DEBUG_SGLIST, "new resid=0x%x", scsi_get_resid(SCpnt));
|
|
|
|
/* update hostdata and lun */
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/*
|
|
* It's called MsgOut phase occur.
|
|
* NinjaSCSI-32Bi/UDE automatically processes up to 3 messages in
|
|
* message out phase. It, however, has more than 3 messages,
|
|
* HBA creates the interrupt and we have to process by hand.
|
|
*/
|
|
static void nsp32_msgout_occur(struct scsi_cmnd *SCpnt)
|
|
{
|
|
nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
|
|
unsigned int base = SCpnt->device->host->io_port;
|
|
//unsigned short command;
|
|
long new_sgtp;
|
|
int i;
|
|
|
|
nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR,
|
|
"enter: msgout_len: 0x%x", data->msgout_len);
|
|
|
|
/*
|
|
* If MsgOut phase is occurred without having any
|
|
* message, then No_Operation is sent (SCSI-2).
|
|
*/
|
|
if (data->msgout_len == 0) {
|
|
nsp32_build_nop(SCpnt);
|
|
}
|
|
|
|
/*
|
|
* Set SGTP ADDR current entry for restarting AUTOSCSI,
|
|
* because SGTP is incremented next point.
|
|
* There is few statement in the specification...
|
|
*/
|
|
new_sgtp = data->cur_lunt->sglun_paddr +
|
|
(data->cur_lunt->cur_entry * sizeof(nsp32_sgtable));
|
|
|
|
/*
|
|
* send messages
|
|
*/
|
|
for (i = 0; i < data->msgout_len; i++) {
|
|
nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR,
|
|
"%d : 0x%x", i, data->msgoutbuf[i]);
|
|
|
|
/*
|
|
* Check REQ is asserted.
|
|
*/
|
|
nsp32_wait_req(data, ASSERT);
|
|
|
|
if (i == (data->msgout_len - 1)) {
|
|
/*
|
|
* If the last message, set the AutoSCSI restart
|
|
* before send back the ack message. AutoSCSI
|
|
* restart automatically negate ATN signal.
|
|
*/
|
|
//command = (AUTO_MSGIN_00_OR_04 | AUTO_MSGIN_02);
|
|
//nsp32_restart_autoscsi(SCpnt, command);
|
|
nsp32_write2(base, COMMAND_CONTROL,
|
|
(CLEAR_CDB_FIFO_POINTER |
|
|
AUTO_COMMAND_PHASE |
|
|
AUTOSCSI_RESTART |
|
|
AUTO_MSGIN_00_OR_04 |
|
|
AUTO_MSGIN_02 ));
|
|
}
|
|
/*
|
|
* Write data with SACK, then wait sack is
|
|
* automatically negated.
|
|
*/
|
|
nsp32_write1(base, SCSI_DATA_WITH_ACK, data->msgoutbuf[i]);
|
|
nsp32_wait_sack(data, NEGATE);
|
|
|
|
nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR, "bus: 0x%x\n",
|
|
nsp32_read1(base, SCSI_BUS_MONITOR));
|
|
};
|
|
|
|
data->msgout_len = 0;
|
|
|
|
nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR, "exit");
|
|
}
|
|
|
|
/*
|
|
* Restart AutoSCSI
|
|
*
|
|
* Note: Restarting AutoSCSI needs set:
|
|
* SYNC_REG, ACK_WIDTH, SGT_ADR, TRANSFER_CONTROL
|
|
*/
|
|
static void nsp32_restart_autoscsi(struct scsi_cmnd *SCpnt, unsigned short command)
|
|
{
|
|
nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
|
|
unsigned int base = data->BaseAddress;
|
|
unsigned short transfer = 0;
|
|
|
|
nsp32_dbg(NSP32_DEBUG_RESTART, "enter");
|
|
|
|
if (data->cur_target == NULL || data->cur_lunt == NULL) {
|
|
nsp32_msg(KERN_ERR, "Target or Lun is invalid");
|
|
}
|
|
|
|
/*
|
|
* set SYNC_REG
|
|
* Don't set BM_START_ADR before setting this register.
|
|
*/
|
|
nsp32_write1(base, SYNC_REG, data->cur_target->syncreg);
|
|
|
|
/*
|
|
* set ACKWIDTH
|
|
*/
|
|
nsp32_write1(base, ACK_WIDTH, data->cur_target->ackwidth);
|
|
|
|
/*
|
|
* set SREQ hazard killer sampling rate
|
|
*/
|
|
nsp32_write1(base, SREQ_SMPL_RATE, data->cur_target->sample_reg);
|
|
|
|
/*
|
|
* set SGT ADDR (physical address)
|
|
*/
|
|
nsp32_write4(base, SGT_ADR, data->cur_lunt->sglun_paddr);
|
|
|
|
/*
|
|
* set TRANSFER CONTROL REG
|
|
*/
|
|
transfer = 0;
|
|
transfer |= (TRANSFER_GO | ALL_COUNTER_CLR);
|
|
if (data->trans_method & NSP32_TRANSFER_BUSMASTER) {
|
|
if (scsi_bufflen(SCpnt) > 0) {
|
|
transfer |= BM_START;
|
|
}
|
|
} else if (data->trans_method & NSP32_TRANSFER_MMIO) {
|
|
transfer |= CB_MMIO_MODE;
|
|
} else if (data->trans_method & NSP32_TRANSFER_PIO) {
|
|
transfer |= CB_IO_MODE;
|
|
}
|
|
nsp32_write2(base, TRANSFER_CONTROL, transfer);
|
|
|
|
/*
|
|
* restart AutoSCSI
|
|
*
|
|
* TODO: COMMANDCONTROL_AUTO_COMMAND_PHASE is needed ?
|
|
*/
|
|
command |= (CLEAR_CDB_FIFO_POINTER |
|
|
AUTO_COMMAND_PHASE |
|
|
AUTOSCSI_RESTART );
|
|
nsp32_write2(base, COMMAND_CONTROL, command);
|
|
|
|
nsp32_dbg(NSP32_DEBUG_RESTART, "exit");
|
|
}
|
|
|
|
|
|
/*
|
|
* cannot run automatically message in occur
|
|
*/
|
|
static void nsp32_msgin_occur(struct scsi_cmnd *SCpnt,
|
|
unsigned long irq_status,
|
|
unsigned short execph)
|
|
{
|
|
nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
|
|
unsigned int base = SCpnt->device->host->io_port;
|
|
unsigned char msg;
|
|
unsigned char msgtype;
|
|
unsigned char newlun;
|
|
unsigned short command = 0;
|
|
int msgclear = TRUE;
|
|
long new_sgtp;
|
|
int ret;
|
|
|
|
/*
|
|
* read first message
|
|
* Use SCSIDATA_W_ACK instead of SCSIDATAIN, because the procedure
|
|
* of Message-In have to be processed before sending back SCSI ACK.
|
|
*/
|
|
msg = nsp32_read1(base, SCSI_DATA_IN);
|
|
data->msginbuf[(unsigned char)data->msgin_len] = msg;
|
|
msgtype = data->msginbuf[0];
|
|
nsp32_dbg(NSP32_DEBUG_MSGINOCCUR,
|
|
"enter: msglen: 0x%x msgin: 0x%x msgtype: 0x%x",
|
|
data->msgin_len, msg, msgtype);
|
|
|
|
/*
|
|
* TODO: We need checking whether bus phase is message in?
|
|
*/
|
|
|
|
/*
|
|
* assert SCSI ACK
|
|
*/
|
|
nsp32_sack_assert(data);
|
|
|
|
/*
|
|
* processing IDENTIFY
|
|
*/
|
|
if (msgtype & 0x80) {
|
|
if (!(irq_status & IRQSTATUS_RESELECT_OCCUER)) {
|
|
/* Invalid (non reselect) phase */
|
|
goto reject;
|
|
}
|
|
|
|
newlun = msgtype & 0x1f; /* TODO: SPI-3 compliant? */
|
|
ret = nsp32_reselection(SCpnt, newlun);
|
|
if (ret == TRUE) {
|
|
goto restart;
|
|
} else {
|
|
goto reject;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* processing messages except for IDENTIFY
|
|
*
|
|
* TODO: Messages are all SCSI-2 terminology. SCSI-3 compliance is TODO.
|
|
*/
|
|
switch (msgtype) {
|
|
/*
|
|
* 1-byte message
|
|
*/
|
|
case COMMAND_COMPLETE:
|
|
case DISCONNECT:
|
|
/*
|
|
* These messages should not be occurred.
|
|
* They should be processed on AutoSCSI sequencer.
|
|
*/
|
|
nsp32_msg(KERN_WARNING,
|
|
"unexpected message of AutoSCSI MsgIn: 0x%x", msg);
|
|
break;
|
|
|
|
case RESTORE_POINTERS:
|
|
/*
|
|
* AutoMsgIn03 is disabled, and HBA gets this message.
|
|
*/
|
|
|
|
if ((execph & DATA_IN_PHASE) || (execph & DATA_OUT_PHASE)) {
|
|
unsigned int s_sacklen;
|
|
|
|
s_sacklen = nsp32_read4(base, SAVED_SACK_CNT);
|
|
if ((execph & MSGIN_02_VALID) && (s_sacklen > 0)) {
|
|
nsp32_adjust_busfree(SCpnt, s_sacklen);
|
|
} else {
|
|
/* No need to rewrite SGT */
|
|
}
|
|
}
|
|
data->cur_lunt->msgin03 = FALSE;
|
|
|
|
/* Update with the new value */
|
|
|
|
/* reset SACK/SavedACK counter (or ALL clear?) */
|
|
nsp32_write4(base, CLR_COUNTER, CLRCOUNTER_ALLMASK);
|
|
|
|
/*
|
|
* set new sg pointer
|
|
*/
|
|
new_sgtp = data->cur_lunt->sglun_paddr +
|
|
(data->cur_lunt->cur_entry * sizeof(nsp32_sgtable));
|
|
nsp32_write4(base, SGT_ADR, new_sgtp);
|
|
|
|
break;
|
|
|
|
case SAVE_POINTERS:
|
|
/*
|
|
* These messages should not be occurred.
|
|
* They should be processed on AutoSCSI sequencer.
|
|
*/
|
|
nsp32_msg (KERN_WARNING,
|
|
"unexpected message of AutoSCSI MsgIn: SAVE_POINTERS");
|
|
|
|
break;
|
|
|
|
case MESSAGE_REJECT:
|
|
/* If previous message_out is sending SDTR, and get
|
|
message_reject from target, SDTR negotiation is failed */
|
|
if (data->cur_target->sync_flag &
|
|
(SDTR_INITIATOR | SDTR_TARGET)) {
|
|
/*
|
|
* Current target is negotiating SDTR, but it's
|
|
* failed. Fall back to async transfer mode, and set
|
|
* SDTR_DONE.
|
|
*/
|
|
nsp32_set_async(data, data->cur_target);
|
|
data->cur_target->sync_flag &= ~SDTR_INITIATOR;
|
|
data->cur_target->sync_flag |= SDTR_DONE;
|
|
|
|
}
|
|
break;
|
|
|
|
case LINKED_CMD_COMPLETE:
|
|
case LINKED_FLG_CMD_COMPLETE:
|
|
/* queue tag is not supported currently */
|
|
nsp32_msg (KERN_WARNING,
|
|
"unsupported message: 0x%x", msgtype);
|
|
break;
|
|
|
|
case INITIATE_RECOVERY:
|
|
/* staring ECA (Extended Contingent Allegiance) state. */
|
|
/* This message is declined in SPI2 or later. */
|
|
|
|
goto reject;
|
|
|
|
/*
|
|
* 2-byte message
|
|
*/
|
|
case SIMPLE_QUEUE_TAG:
|
|
case 0x23:
|
|
/*
|
|
* 0x23: Ignore_Wide_Residue is not declared in scsi.h.
|
|
* No support is needed.
|
|
*/
|
|
if (data->msgin_len >= 1) {
|
|
goto reject;
|
|
}
|
|
|
|
/* current position is 1-byte of 2 byte */
|
|
msgclear = FALSE;
|
|
|
|
break;
|
|
|
|
/*
|
|
* extended message
|
|
*/
|
|
case EXTENDED_MESSAGE:
|
|
if (data->msgin_len < 1) {
|
|
/*
|
|
* Current position does not reach 2-byte
|
|
* (2-byte is extended message length).
|
|
*/
|
|
msgclear = FALSE;
|
|
break;
|
|
}
|
|
|
|
if ((data->msginbuf[1] + 1) > data->msgin_len) {
|
|
/*
|
|
* Current extended message has msginbuf[1] + 2
|
|
* (msgin_len starts counting from 0, so buf[1] + 1).
|
|
* If current message position is not finished,
|
|
* continue receiving message.
|
|
*/
|
|
msgclear = FALSE;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Reach here means regular length of each type of
|
|
* extended messages.
|
|
*/
|
|
switch (data->msginbuf[2]) {
|
|
case EXTENDED_MODIFY_DATA_POINTER:
|
|
/* TODO */
|
|
goto reject; /* not implemented yet */
|
|
break;
|
|
|
|
case EXTENDED_SDTR:
|
|
/*
|
|
* Exchange this message between initiator and target.
|
|
*/
|
|
if (data->msgin_len != EXTENDED_SDTR_LEN + 1) {
|
|
/*
|
|
* received inappropriate message.
|
|
*/
|
|
goto reject;
|
|
break;
|
|
}
|
|
|
|
nsp32_analyze_sdtr(SCpnt);
|
|
|
|
break;
|
|
|
|
case EXTENDED_EXTENDED_IDENTIFY:
|
|
/* SCSI-I only, not supported. */
|
|
goto reject; /* not implemented yet */
|
|
|
|
break;
|
|
|
|
case EXTENDED_WDTR:
|
|
goto reject; /* not implemented yet */
|
|
|
|
break;
|
|
|
|
default:
|
|
goto reject;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
goto reject;
|
|
}
|
|
|
|
restart:
|
|
if (msgclear == TRUE) {
|
|
data->msgin_len = 0;
|
|
|
|
/*
|
|
* If restarting AutoSCSI, but there are some message to out
|
|
* (msgout_len > 0), set AutoATN, and set SCSIMSGOUT as 0
|
|
* (MV_VALID = 0). When commandcontrol is written with
|
|
* AutoSCSI restart, at the same time MsgOutOccur should be
|
|
* happened (however, such situation is really possible...?).
|
|
*/
|
|
if (data->msgout_len > 0) {
|
|
nsp32_write4(base, SCSI_MSG_OUT, 0);
|
|
command |= AUTO_ATN;
|
|
}
|
|
|
|
/*
|
|
* restart AutoSCSI
|
|
* If it's failed, COMMANDCONTROL_AUTO_COMMAND_PHASE is needed.
|
|
*/
|
|
command |= (AUTO_MSGIN_00_OR_04 | AUTO_MSGIN_02);
|
|
|
|
/*
|
|
* If current msgin03 is TRUE, then flag on.
|
|
*/
|
|
if (data->cur_lunt->msgin03 == TRUE) {
|
|
command |= AUTO_MSGIN_03;
|
|
}
|
|
data->cur_lunt->msgin03 = FALSE;
|
|
} else {
|
|
data->msgin_len++;
|
|
}
|
|
|
|
/*
|
|
* restart AutoSCSI
|
|
*/
|
|
nsp32_restart_autoscsi(SCpnt, command);
|
|
|
|
/*
|
|
* wait SCSI REQ negate for REQ-ACK handshake
|
|
*/
|
|
nsp32_wait_req(data, NEGATE);
|
|
|
|
/*
|
|
* negate SCSI ACK
|
|
*/
|
|
nsp32_sack_negate(data);
|
|
|
|
nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "exit");
|
|
|
|
return;
|
|
|
|
reject:
|
|
nsp32_msg(KERN_WARNING,
|
|
"invalid or unsupported MessageIn, rejected. "
|
|
"current msg: 0x%x (len: 0x%x), processing msg: 0x%x",
|
|
msg, data->msgin_len, msgtype);
|
|
nsp32_build_reject(SCpnt);
|
|
data->msgin_len = 0;
|
|
|
|
goto restart;
|
|
}
|
|
|
|
/*
|
|
*
|
|
*/
|
|
static void nsp32_analyze_sdtr(struct scsi_cmnd *SCpnt)
|
|
{
|
|
nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
|
|
nsp32_target *target = data->cur_target;
|
|
nsp32_sync_table *synct;
|
|
unsigned char get_period = data->msginbuf[3];
|
|
unsigned char get_offset = data->msginbuf[4];
|
|
int entry;
|
|
int syncnum;
|
|
|
|
nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "enter");
|
|
|
|
synct = data->synct;
|
|
syncnum = data->syncnum;
|
|
|
|
/*
|
|
* If this inititor sent the SDTR message, then target responds SDTR,
|
|
* initiator SYNCREG, ACKWIDTH from SDTR parameter.
|
|
* Messages are not appropriate, then send back reject message.
|
|
* If initiator did not send the SDTR, but target sends SDTR,
|
|
* initiator calculator the appropriate parameter and send back SDTR.
|
|
*/
|
|
if (target->sync_flag & SDTR_INITIATOR) {
|
|
/*
|
|
* Initiator sent SDTR, the target responds and
|
|
* send back negotiation SDTR.
|
|
*/
|
|
nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "target responds SDTR");
|
|
|
|
target->sync_flag &= ~SDTR_INITIATOR;
|
|
target->sync_flag |= SDTR_DONE;
|
|
|
|
/*
|
|
* offset:
|
|
*/
|
|
if (get_offset > SYNC_OFFSET) {
|
|
/*
|
|
* Negotiation is failed, the target send back
|
|
* unexpected offset value.
|
|
*/
|
|
goto reject;
|
|
}
|
|
|
|
if (get_offset == ASYNC_OFFSET) {
|
|
/*
|
|
* Negotiation is succeeded, the target want
|
|
* to fall back into asynchronous transfer mode.
|
|
*/
|
|
goto async;
|
|
}
|
|
|
|
/*
|
|
* period:
|
|
* Check whether sync period is too short. If too short,
|
|
* fall back to async mode. If it's ok, then investigate
|
|
* the received sync period. If sync period is acceptable
|
|
* between sync table start_period and end_period, then
|
|
* set this I_T nexus as sent offset and period.
|
|
* If it's not acceptable, send back reject and fall back
|
|
* to async mode.
|
|
*/
|
|
if (get_period < data->synct[0].period_num) {
|
|
/*
|
|
* Negotiation is failed, the target send back
|
|
* unexpected period value.
|
|
*/
|
|
goto reject;
|
|
}
|
|
|
|
entry = nsp32_search_period_entry(data, target, get_period);
|
|
|
|
if (entry < 0) {
|
|
/*
|
|
* Target want to use long period which is not
|
|
* acceptable NinjaSCSI-32Bi/UDE.
|
|
*/
|
|
goto reject;
|
|
}
|
|
|
|
/*
|
|
* Set new sync table and offset in this I_T nexus.
|
|
*/
|
|
nsp32_set_sync_entry(data, target, entry, get_offset);
|
|
} else {
|
|
/* Target send SDTR to initiator. */
|
|
nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "target send SDTR");
|
|
|
|
target->sync_flag |= SDTR_INITIATOR;
|
|
|
|
/* offset: */
|
|
if (get_offset > SYNC_OFFSET) {
|
|
/* send back as SYNC_OFFSET */
|
|
get_offset = SYNC_OFFSET;
|
|
}
|
|
|
|
/* period: */
|
|
if (get_period < data->synct[0].period_num) {
|
|
get_period = data->synct[0].period_num;
|
|
}
|
|
|
|
entry = nsp32_search_period_entry(data, target, get_period);
|
|
|
|
if (get_offset == ASYNC_OFFSET || entry < 0) {
|
|
nsp32_set_async(data, target);
|
|
nsp32_build_sdtr(SCpnt, 0, ASYNC_OFFSET);
|
|
} else {
|
|
nsp32_set_sync_entry(data, target, entry, get_offset);
|
|
nsp32_build_sdtr(SCpnt, get_period, get_offset);
|
|
}
|
|
}
|
|
|
|
target->period = get_period;
|
|
nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "exit");
|
|
return;
|
|
|
|
reject:
|
|
/*
|
|
* If the current message is unacceptable, send back to the target
|
|
* with reject message.
|
|
*/
|
|
nsp32_build_reject(SCpnt);
|
|
|
|
async:
|
|
nsp32_set_async(data, target); /* set as ASYNC transfer mode */
|
|
|
|
target->period = 0;
|
|
nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "exit: set async");
|
|
return;
|
|
}
|
|
|
|
|
|
/*
|
|
* Search config entry number matched in sync_table from given
|
|
* target and speed period value. If failed to search, return negative value.
|
|
*/
|
|
static int nsp32_search_period_entry(nsp32_hw_data *data,
|
|
nsp32_target *target,
|
|
unsigned char period)
|
|
{
|
|
int i;
|
|
|
|
if (target->limit_entry >= data->syncnum) {
|
|
nsp32_msg(KERN_ERR, "limit_entry exceeds syncnum!");
|
|
target->limit_entry = 0;
|
|
}
|
|
|
|
for (i = target->limit_entry; i < data->syncnum; i++) {
|
|
if (period >= data->synct[i].start_period &&
|
|
period <= data->synct[i].end_period) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Check given period value is over the sync_table value.
|
|
* If so, return max value.
|
|
*/
|
|
if (i == data->syncnum) {
|
|
i = -1;
|
|
}
|
|
|
|
return i;
|
|
}
|
|
|
|
|
|
/*
|
|
* target <-> initiator use ASYNC transfer
|
|
*/
|
|
static void nsp32_set_async(nsp32_hw_data *data, nsp32_target *target)
|
|
{
|
|
unsigned char period = data->synct[target->limit_entry].period_num;
|
|
|
|
target->offset = ASYNC_OFFSET;
|
|
target->period = 0;
|
|
target->syncreg = TO_SYNCREG(period, ASYNC_OFFSET);
|
|
target->ackwidth = 0;
|
|
target->sample_reg = 0;
|
|
|
|
nsp32_dbg(NSP32_DEBUG_SYNC, "set async");
|
|
}
|
|
|
|
|
|
/*
|
|
* target <-> initiator use maximum SYNC transfer
|
|
*/
|
|
static void nsp32_set_max_sync(nsp32_hw_data *data,
|
|
nsp32_target *target,
|
|
unsigned char *period,
|
|
unsigned char *offset)
|
|
{
|
|
unsigned char period_num, ackwidth;
|
|
|
|
period_num = data->synct[target->limit_entry].period_num;
|
|
*period = data->synct[target->limit_entry].start_period;
|
|
ackwidth = data->synct[target->limit_entry].ackwidth;
|
|
*offset = SYNC_OFFSET;
|
|
|
|
target->syncreg = TO_SYNCREG(period_num, *offset);
|
|
target->ackwidth = ackwidth;
|
|
target->offset = *offset;
|
|
target->sample_reg = 0; /* disable SREQ sampling */
|
|
}
|
|
|
|
|
|
/*
|
|
* target <-> initiator use entry number speed
|
|
*/
|
|
static void nsp32_set_sync_entry(nsp32_hw_data *data,
|
|
nsp32_target *target,
|
|
int entry,
|
|
unsigned char offset)
|
|
{
|
|
unsigned char period, ackwidth, sample_rate;
|
|
|
|
period = data->synct[entry].period_num;
|
|
ackwidth = data->synct[entry].ackwidth;
|
|
offset = offset;
|
|
sample_rate = data->synct[entry].sample_rate;
|
|
|
|
target->syncreg = TO_SYNCREG(period, offset);
|
|
target->ackwidth = ackwidth;
|
|
target->offset = offset;
|
|
target->sample_reg = sample_rate | SAMPLING_ENABLE;
|
|
|
|
nsp32_dbg(NSP32_DEBUG_SYNC, "set sync");
|
|
}
|
|
|
|
|
|
/*
|
|
* It waits until SCSI REQ becomes assertion or negation state.
|
|
*
|
|
* Note: If nsp32_msgin_occur is called, we asserts SCSI ACK. Then
|
|
* connected target responds SCSI REQ negation. We have to wait
|
|
* SCSI REQ becomes negation in order to negate SCSI ACK signal for
|
|
* REQ-ACK handshake.
|
|
*/
|
|
static void nsp32_wait_req(nsp32_hw_data *data, int state)
|
|
{
|
|
unsigned int base = data->BaseAddress;
|
|
int wait_time = 0;
|
|
unsigned char bus, req_bit;
|
|
|
|
if (!((state == ASSERT) || (state == NEGATE))) {
|
|
nsp32_msg(KERN_ERR, "unknown state designation");
|
|
}
|
|
/* REQ is BIT(5) */
|
|
req_bit = (state == ASSERT ? BUSMON_REQ : 0);
|
|
|
|
do {
|
|
bus = nsp32_read1(base, SCSI_BUS_MONITOR);
|
|
if ((bus & BUSMON_REQ) == req_bit) {
|
|
nsp32_dbg(NSP32_DEBUG_WAIT,
|
|
"wait_time: %d", wait_time);
|
|
return;
|
|
}
|
|
udelay(1);
|
|
wait_time++;
|
|
} while (wait_time < REQSACK_TIMEOUT_TIME);
|
|
|
|
nsp32_msg(KERN_WARNING, "wait REQ timeout, req_bit: 0x%x", req_bit);
|
|
}
|
|
|
|
/*
|
|
* It waits until SCSI SACK becomes assertion or negation state.
|
|
*/
|
|
static void nsp32_wait_sack(nsp32_hw_data *data, int state)
|
|
{
|
|
unsigned int base = data->BaseAddress;
|
|
int wait_time = 0;
|
|
unsigned char bus, ack_bit;
|
|
|
|
if (!((state == ASSERT) || (state == NEGATE))) {
|
|
nsp32_msg(KERN_ERR, "unknown state designation");
|
|
}
|
|
/* ACK is BIT(4) */
|
|
ack_bit = (state == ASSERT ? BUSMON_ACK : 0);
|
|
|
|
do {
|
|
bus = nsp32_read1(base, SCSI_BUS_MONITOR);
|
|
if ((bus & BUSMON_ACK) == ack_bit) {
|
|
nsp32_dbg(NSP32_DEBUG_WAIT,
|
|
"wait_time: %d", wait_time);
|
|
return;
|
|
}
|
|
udelay(1);
|
|
wait_time++;
|
|
} while (wait_time < REQSACK_TIMEOUT_TIME);
|
|
|
|
nsp32_msg(KERN_WARNING, "wait SACK timeout, ack_bit: 0x%x", ack_bit);
|
|
}
|
|
|
|
/*
|
|
* assert SCSI ACK
|
|
*
|
|
* Note: SCSI ACK assertion needs with ACKENB=1, AUTODIRECTION=1.
|
|
*/
|
|
static void nsp32_sack_assert(nsp32_hw_data *data)
|
|
{
|
|
unsigned int base = data->BaseAddress;
|
|
unsigned char busctrl;
|
|
|
|
busctrl = nsp32_read1(base, SCSI_BUS_CONTROL);
|
|
busctrl |= (BUSCTL_ACK | AUTODIRECTION | ACKENB);
|
|
nsp32_write1(base, SCSI_BUS_CONTROL, busctrl);
|
|
}
|
|
|
|
/*
|
|
* negate SCSI ACK
|
|
*/
|
|
static void nsp32_sack_negate(nsp32_hw_data *data)
|
|
{
|
|
unsigned int base = data->BaseAddress;
|
|
unsigned char busctrl;
|
|
|
|
busctrl = nsp32_read1(base, SCSI_BUS_CONTROL);
|
|
busctrl &= ~BUSCTL_ACK;
|
|
nsp32_write1(base, SCSI_BUS_CONTROL, busctrl);
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Note: n_io_port is defined as 0x7f because I/O register port is
|
|
* assigned as:
|
|
* 0x800-0x8ff: memory mapped I/O port
|
|
* 0x900-0xbff: (map same 0x800-0x8ff I/O port image repeatedly)
|
|
* 0xc00-0xfff: CardBus status registers
|
|
*/
|
|
static int nsp32_detect(struct pci_dev *pdev)
|
|
{
|
|
struct Scsi_Host *host; /* registered host structure */
|
|
struct resource *res;
|
|
nsp32_hw_data *data;
|
|
int ret;
|
|
int i, j;
|
|
|
|
nsp32_dbg(NSP32_DEBUG_REGISTER, "enter");
|
|
|
|
/*
|
|
* register this HBA as SCSI device
|
|
*/
|
|
host = scsi_host_alloc(&nsp32_template, sizeof(nsp32_hw_data));
|
|
if (host == NULL) {
|
|
nsp32_msg (KERN_ERR, "failed to scsi register");
|
|
goto err;
|
|
}
|
|
|
|
/*
|
|
* set nsp32_hw_data
|
|
*/
|
|
data = (nsp32_hw_data *)host->hostdata;
|
|
|
|
memcpy(data, &nsp32_data_base, sizeof(nsp32_hw_data));
|
|
|
|
host->irq = data->IrqNumber;
|
|
host->io_port = data->BaseAddress;
|
|
host->unique_id = data->BaseAddress;
|
|
host->n_io_port = data->NumAddress;
|
|
host->base = (unsigned long)data->MmioAddress;
|
|
|
|
data->Host = host;
|
|
spin_lock_init(&(data->Lock));
|
|
|
|
data->cur_lunt = NULL;
|
|
data->cur_target = NULL;
|
|
|
|
/*
|
|
* Bus master transfer mode is supported currently.
|
|
*/
|
|
data->trans_method = NSP32_TRANSFER_BUSMASTER;
|
|
|
|
/*
|
|
* Set clock div, CLOCK_4 (HBA has own external clock, and
|
|
* dividing * 100ns/4).
|
|
* Currently CLOCK_4 has only tested, not for CLOCK_2/PCICLK yet.
|
|
*/
|
|
data->clock = CLOCK_4;
|
|
|
|
/*
|
|
* Select appropriate nsp32_sync_table and set I_CLOCKDIV.
|
|
*/
|
|
switch (data->clock) {
|
|
case CLOCK_4:
|
|
/* If data->clock is CLOCK_4, then select 40M sync table. */
|
|
data->synct = nsp32_sync_table_40M;
|
|
data->syncnum = ARRAY_SIZE(nsp32_sync_table_40M);
|
|
break;
|
|
case CLOCK_2:
|
|
/* If data->clock is CLOCK_2, then select 20M sync table. */
|
|
data->synct = nsp32_sync_table_20M;
|
|
data->syncnum = ARRAY_SIZE(nsp32_sync_table_20M);
|
|
break;
|
|
case PCICLK:
|
|
/* If data->clock is PCICLK, then select pci sync table. */
|
|
data->synct = nsp32_sync_table_pci;
|
|
data->syncnum = ARRAY_SIZE(nsp32_sync_table_pci);
|
|
break;
|
|
default:
|
|
nsp32_msg(KERN_WARNING,
|
|
"Invalid clock div is selected, set CLOCK_4.");
|
|
/* Use default value CLOCK_4 */
|
|
data->clock = CLOCK_4;
|
|
data->synct = nsp32_sync_table_40M;
|
|
data->syncnum = ARRAY_SIZE(nsp32_sync_table_40M);
|
|
}
|
|
|
|
/*
|
|
* setup nsp32_lunt
|
|
*/
|
|
|
|
/*
|
|
* setup DMA
|
|
*/
|
|
if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) != 0) {
|
|
nsp32_msg (KERN_ERR, "failed to set PCI DMA mask");
|
|
goto scsi_unregister;
|
|
}
|
|
|
|
/*
|
|
* allocate autoparam DMA resource.
|
|
*/
|
|
data->autoparam = pci_alloc_consistent(pdev, sizeof(nsp32_autoparam), &(data->auto_paddr));
|
|
if (data->autoparam == NULL) {
|
|
nsp32_msg(KERN_ERR, "failed to allocate DMA memory");
|
|
goto scsi_unregister;
|
|
}
|
|
|
|
/*
|
|
* allocate scatter-gather DMA resource.
|
|
*/
|
|
data->sg_list = pci_alloc_consistent(pdev, NSP32_SG_TABLE_SIZE,
|
|
&(data->sg_paddr));
|
|
if (data->sg_list == NULL) {
|
|
nsp32_msg(KERN_ERR, "failed to allocate DMA memory");
|
|
goto free_autoparam;
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(data->lunt); i++) {
|
|
for (j = 0; j < ARRAY_SIZE(data->lunt[0]); j++) {
|
|
int offset = i * ARRAY_SIZE(data->lunt[0]) + j;
|
|
nsp32_lunt tmp = {
|
|
.SCpnt = NULL,
|
|
.save_datp = 0,
|
|
.msgin03 = FALSE,
|
|
.sg_num = 0,
|
|
.cur_entry = 0,
|
|
.sglun = &(data->sg_list[offset]),
|
|
.sglun_paddr = data->sg_paddr + (offset * sizeof(nsp32_sglun)),
|
|
};
|
|
|
|
data->lunt[i][j] = tmp;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* setup target
|
|
*/
|
|
for (i = 0; i < ARRAY_SIZE(data->target); i++) {
|
|
nsp32_target *target = &(data->target[i]);
|
|
|
|
target->limit_entry = 0;
|
|
target->sync_flag = 0;
|
|
nsp32_set_async(data, target);
|
|
}
|
|
|
|
/*
|
|
* EEPROM check
|
|
*/
|
|
ret = nsp32_getprom_param(data);
|
|
if (ret == FALSE) {
|
|
data->resettime = 3; /* default 3 */
|
|
}
|
|
|
|
/*
|
|
* setup HBA
|
|
*/
|
|
nsp32hw_init(data);
|
|
|
|
snprintf(data->info_str, sizeof(data->info_str),
|
|
"NinjaSCSI-32Bi/UDE: irq %d, io 0x%lx+0x%x",
|
|
host->irq, host->io_port, host->n_io_port);
|
|
|
|
/*
|
|
* SCSI bus reset
|
|
*
|
|
* Note: It's important to reset SCSI bus in initialization phase.
|
|
* NinjaSCSI-32Bi/UDE HBA EEPROM seems to exchange SDTR when
|
|
* system is coming up, so SCSI devices connected to HBA is set as
|
|
* un-asynchronous mode. It brings the merit that this HBA is
|
|
* ready to start synchronous transfer without any preparation,
|
|
* but we are difficult to control transfer speed. In addition,
|
|
* it prevents device transfer speed from effecting EEPROM start-up
|
|
* SDTR. NinjaSCSI-32Bi/UDE has the feature if EEPROM is set as
|
|
* Auto Mode, then FAST-10M is selected when SCSI devices are
|
|
* connected same or more than 4 devices. It should be avoided
|
|
* depending on this specification. Thus, resetting the SCSI bus
|
|
* restores all connected SCSI devices to asynchronous mode, then
|
|
* this driver set SDTR safely later, and we can control all SCSI
|
|
* device transfer mode.
|
|
*/
|
|
nsp32_do_bus_reset(data);
|
|
|
|
ret = request_irq(host->irq, do_nsp32_isr, IRQF_SHARED, "nsp32", data);
|
|
if (ret < 0) {
|
|
nsp32_msg(KERN_ERR, "Unable to allocate IRQ for NinjaSCSI32 "
|
|
"SCSI PCI controller. Interrupt: %d", host->irq);
|
|
goto free_sg_list;
|
|
}
|
|
|
|
/*
|
|
* PCI IO register
|
|
*/
|
|
res = request_region(host->io_port, host->n_io_port, "nsp32");
|
|
if (res == NULL) {
|
|
nsp32_msg(KERN_ERR,
|
|
"I/O region 0x%lx+0x%lx is already used",
|
|
data->BaseAddress, data->NumAddress);
|
|
goto free_irq;
|
|
}
|
|
|
|
ret = scsi_add_host(host, &pdev->dev);
|
|
if (ret) {
|
|
nsp32_msg(KERN_ERR, "failed to add scsi host");
|
|
goto free_region;
|
|
}
|
|
scsi_scan_host(host);
|
|
pci_set_drvdata(pdev, host);
|
|
return 0;
|
|
|
|
free_region:
|
|
release_region(host->io_port, host->n_io_port);
|
|
|
|
free_irq:
|
|
free_irq(host->irq, data);
|
|
|
|
free_sg_list:
|
|
pci_free_consistent(pdev, NSP32_SG_TABLE_SIZE,
|
|
data->sg_list, data->sg_paddr);
|
|
|
|
free_autoparam:
|
|
pci_free_consistent(pdev, sizeof(nsp32_autoparam),
|
|
data->autoparam, data->auto_paddr);
|
|
|
|
scsi_unregister:
|
|
scsi_host_put(host);
|
|
|
|
err:
|
|
return 1;
|
|
}
|
|
|
|
static int nsp32_release(struct Scsi_Host *host)
|
|
{
|
|
nsp32_hw_data *data = (nsp32_hw_data *)host->hostdata;
|
|
|
|
if (data->autoparam) {
|
|
pci_free_consistent(data->Pci, sizeof(nsp32_autoparam),
|
|
data->autoparam, data->auto_paddr);
|
|
}
|
|
|
|
if (data->sg_list) {
|
|
pci_free_consistent(data->Pci, NSP32_SG_TABLE_SIZE,
|
|
data->sg_list, data->sg_paddr);
|
|
}
|
|
|
|
if (host->irq) {
|
|
free_irq(host->irq, data);
|
|
}
|
|
|
|
if (host->io_port && host->n_io_port) {
|
|
release_region(host->io_port, host->n_io_port);
|
|
}
|
|
|
|
if (data->MmioAddress) {
|
|
iounmap(data->MmioAddress);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const char *nsp32_info(struct Scsi_Host *shpnt)
|
|
{
|
|
nsp32_hw_data *data = (nsp32_hw_data *)shpnt->hostdata;
|
|
|
|
return data->info_str;
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
* error handler
|
|
*/
|
|
static int nsp32_eh_abort(struct scsi_cmnd *SCpnt)
|
|
{
|
|
nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
|
|
unsigned int base = SCpnt->device->host->io_port;
|
|
|
|
nsp32_msg(KERN_WARNING, "abort");
|
|
|
|
if (data->cur_lunt->SCpnt == NULL) {
|
|
nsp32_dbg(NSP32_DEBUG_BUSRESET, "abort failed");
|
|
return FAILED;
|
|
}
|
|
|
|
if (data->cur_target->sync_flag & (SDTR_INITIATOR | SDTR_TARGET)) {
|
|
/* reset SDTR negotiation */
|
|
data->cur_target->sync_flag = 0;
|
|
nsp32_set_async(data, data->cur_target);
|
|
}
|
|
|
|
nsp32_write2(base, TRANSFER_CONTROL, 0);
|
|
nsp32_write2(base, BM_CNT, 0);
|
|
|
|
SCpnt->result = DID_ABORT << 16;
|
|
nsp32_scsi_done(SCpnt);
|
|
|
|
nsp32_dbg(NSP32_DEBUG_BUSRESET, "abort success");
|
|
return SUCCESS;
|
|
}
|
|
|
|
static int nsp32_eh_bus_reset(struct scsi_cmnd *SCpnt)
|
|
{
|
|
nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
|
|
unsigned int base = SCpnt->device->host->io_port;
|
|
|
|
spin_lock_irq(SCpnt->device->host->host_lock);
|
|
|
|
nsp32_msg(KERN_INFO, "Bus Reset");
|
|
nsp32_dbg(NSP32_DEBUG_BUSRESET, "SCpnt=0x%x", SCpnt);
|
|
|
|
nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);
|
|
nsp32_do_bus_reset(data);
|
|
nsp32_write2(base, IRQ_CONTROL, 0);
|
|
|
|
spin_unlock_irq(SCpnt->device->host->host_lock);
|
|
return SUCCESS; /* SCSI bus reset is succeeded at any time. */
|
|
}
|
|
|
|
static void nsp32_do_bus_reset(nsp32_hw_data *data)
|
|
{
|
|
unsigned int base = data->BaseAddress;
|
|
unsigned short intrdat;
|
|
int i;
|
|
|
|
nsp32_dbg(NSP32_DEBUG_BUSRESET, "in");
|
|
|
|
/*
|
|
* stop all transfer
|
|
* clear TRANSFERCONTROL_BM_START
|
|
* clear counter
|
|
*/
|
|
nsp32_write2(base, TRANSFER_CONTROL, 0);
|
|
nsp32_write4(base, BM_CNT, 0);
|
|
nsp32_write4(base, CLR_COUNTER, CLRCOUNTER_ALLMASK);
|
|
|
|
/*
|
|
* fall back to asynchronous transfer mode
|
|
* initialize SDTR negotiation flag
|
|
*/
|
|
for (i = 0; i < ARRAY_SIZE(data->target); i++) {
|
|
nsp32_target *target = &data->target[i];
|
|
|
|
target->sync_flag = 0;
|
|
nsp32_set_async(data, target);
|
|
}
|
|
|
|
/*
|
|
* reset SCSI bus
|
|
*/
|
|
nsp32_write1(base, SCSI_BUS_CONTROL, BUSCTL_RST);
|
|
udelay(RESET_HOLD_TIME);
|
|
nsp32_write1(base, SCSI_BUS_CONTROL, 0);
|
|
for(i = 0; i < 5; i++) {
|
|
intrdat = nsp32_read2(base, IRQ_STATUS); /* dummy read */
|
|
nsp32_dbg(NSP32_DEBUG_BUSRESET, "irq:1: 0x%x", intrdat);
|
|
}
|
|
|
|
data->CurrentSC = NULL;
|
|
}
|
|
|
|
static int nsp32_eh_host_reset(struct scsi_cmnd *SCpnt)
|
|
{
|
|
struct Scsi_Host *host = SCpnt->device->host;
|
|
unsigned int base = SCpnt->device->host->io_port;
|
|
nsp32_hw_data *data = (nsp32_hw_data *)host->hostdata;
|
|
|
|
nsp32_msg(KERN_INFO, "Host Reset");
|
|
nsp32_dbg(NSP32_DEBUG_BUSRESET, "SCpnt=0x%x", SCpnt);
|
|
|
|
spin_lock_irq(SCpnt->device->host->host_lock);
|
|
|
|
nsp32hw_init(data);
|
|
nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);
|
|
nsp32_do_bus_reset(data);
|
|
nsp32_write2(base, IRQ_CONTROL, 0);
|
|
|
|
spin_unlock_irq(SCpnt->device->host->host_lock);
|
|
return SUCCESS; /* Host reset is succeeded at any time. */
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
* EEPROM handler
|
|
*/
|
|
|
|
/*
|
|
* getting EEPROM parameter
|
|
*/
|
|
static int nsp32_getprom_param(nsp32_hw_data *data)
|
|
{
|
|
int vendor = data->pci_devid->vendor;
|
|
int device = data->pci_devid->device;
|
|
int ret, val, i;
|
|
|
|
/*
|
|
* EEPROM checking.
|
|
*/
|
|
ret = nsp32_prom_read(data, 0x7e);
|
|
if (ret != 0x55) {
|
|
nsp32_msg(KERN_INFO, "No EEPROM detected: 0x%x", ret);
|
|
return FALSE;
|
|
}
|
|
ret = nsp32_prom_read(data, 0x7f);
|
|
if (ret != 0xaa) {
|
|
nsp32_msg(KERN_INFO, "Invalid number: 0x%x", ret);
|
|
return FALSE;
|
|
}
|
|
|
|
/*
|
|
* check EEPROM type
|
|
*/
|
|
if (vendor == PCI_VENDOR_ID_WORKBIT &&
|
|
device == PCI_DEVICE_ID_WORKBIT_STANDARD) {
|
|
ret = nsp32_getprom_c16(data);
|
|
} else if (vendor == PCI_VENDOR_ID_WORKBIT &&
|
|
device == PCI_DEVICE_ID_NINJASCSI_32BIB_LOGITEC) {
|
|
ret = nsp32_getprom_at24(data);
|
|
} else if (vendor == PCI_VENDOR_ID_WORKBIT &&
|
|
device == PCI_DEVICE_ID_NINJASCSI_32UDE_MELCO ) {
|
|
ret = nsp32_getprom_at24(data);
|
|
} else {
|
|
nsp32_msg(KERN_WARNING, "Unknown EEPROM");
|
|
ret = FALSE;
|
|
}
|
|
|
|
/* for debug : SPROM data full checking */
|
|
for (i = 0; i <= 0x1f; i++) {
|
|
val = nsp32_prom_read(data, i);
|
|
nsp32_dbg(NSP32_DEBUG_EEPROM,
|
|
"rom address 0x%x : 0x%x", i, val);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
/*
|
|
* AT24C01A (Logitec: LHA-600S), AT24C02 (Melco Buffalo: IFC-USLP) data map:
|
|
*
|
|
* ROMADDR
|
|
* 0x00 - 0x06 : Device Synchronous Transfer Period (SCSI ID 0 - 6)
|
|
* Value 0x0: ASYNC, 0x0c: Ultra-20M, 0x19: Fast-10M
|
|
* 0x07 : HBA Synchronous Transfer Period
|
|
* Value 0: AutoSync, 1: Manual Setting
|
|
* 0x08 - 0x0f : Not Used? (0x0)
|
|
* 0x10 : Bus Termination
|
|
* Value 0: Auto[ON], 1: ON, 2: OFF
|
|
* 0x11 : Not Used? (0)
|
|
* 0x12 : Bus Reset Delay Time (0x03)
|
|
* 0x13 : Bootable CD Support
|
|
* Value 0: Disable, 1: Enable
|
|
* 0x14 : Device Scan
|
|
* Bit 7 6 5 4 3 2 1 0
|
|
* | <----------------->
|
|
* | SCSI ID: Value 0: Skip, 1: YES
|
|
* |-> Value 0: ALL scan, Value 1: Manual
|
|
* 0x15 - 0x1b : Not Used? (0)
|
|
* 0x1c : Constant? (0x01) (clock div?)
|
|
* 0x1d - 0x7c : Not Used (0xff)
|
|
* 0x7d : Not Used? (0xff)
|
|
* 0x7e : Constant (0x55), Validity signature
|
|
* 0x7f : Constant (0xaa), Validity signature
|
|
*/
|
|
static int nsp32_getprom_at24(nsp32_hw_data *data)
|
|
{
|
|
int ret, i;
|
|
int auto_sync;
|
|
nsp32_target *target;
|
|
int entry;
|
|
|
|
/*
|
|
* Reset time which is designated by EEPROM.
|
|
*
|
|
* TODO: Not used yet.
|
|
*/
|
|
data->resettime = nsp32_prom_read(data, 0x12);
|
|
|
|
/*
|
|
* HBA Synchronous Transfer Period
|
|
*
|
|
* Note: auto_sync = 0: auto, 1: manual. Ninja SCSI HBA spec says
|
|
* that if auto_sync is 0 (auto), and connected SCSI devices are
|
|
* same or lower than 3, then transfer speed is set as ULTRA-20M.
|
|
* On the contrary if connected SCSI devices are same or higher
|
|
* than 4, then transfer speed is set as FAST-10M.
|
|
*
|
|
* I break this rule. The number of connected SCSI devices are
|
|
* only ignored. If auto_sync is 0 (auto), then transfer speed is
|
|
* forced as ULTRA-20M.
|
|
*/
|
|
ret = nsp32_prom_read(data, 0x07);
|
|
switch (ret) {
|
|
case 0:
|
|
auto_sync = TRUE;
|
|
break;
|
|
case 1:
|
|
auto_sync = FALSE;
|
|
break;
|
|
default:
|
|
nsp32_msg(KERN_WARNING,
|
|
"Unsupported Auto Sync mode. Fall back to manual mode.");
|
|
auto_sync = TRUE;
|
|
}
|
|
|
|
if (trans_mode == ULTRA20M_MODE) {
|
|
auto_sync = TRUE;
|
|
}
|
|
|
|
/*
|
|
* each device Synchronous Transfer Period
|
|
*/
|
|
for (i = 0; i < NSP32_HOST_SCSIID; i++) {
|
|
target = &data->target[i];
|
|
if (auto_sync == TRUE) {
|
|
target->limit_entry = 0; /* set as ULTRA20M */
|
|
} else {
|
|
ret = nsp32_prom_read(data, i);
|
|
entry = nsp32_search_period_entry(data, target, ret);
|
|
if (entry < 0) {
|
|
/* search failed... set maximum speed */
|
|
entry = 0;
|
|
}
|
|
target->limit_entry = entry;
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/*
|
|
* C16 110 (I-O Data: SC-NBD) data map:
|
|
*
|
|
* ROMADDR
|
|
* 0x00 - 0x06 : Device Synchronous Transfer Period (SCSI ID 0 - 6)
|
|
* Value 0x0: 20MB/S, 0x1: 10MB/S, 0x2: 5MB/S, 0x3: ASYNC
|
|
* 0x07 : 0 (HBA Synchronous Transfer Period: Auto Sync)
|
|
* 0x08 - 0x0f : Not Used? (0x0)
|
|
* 0x10 : Transfer Mode
|
|
* Value 0: PIO, 1: Busmater
|
|
* 0x11 : Bus Reset Delay Time (0x00-0x20)
|
|
* 0x12 : Bus Termination
|
|
* Value 0: Disable, 1: Enable
|
|
* 0x13 - 0x19 : Disconnection
|
|
* Value 0: Disable, 1: Enable
|
|
* 0x1a - 0x7c : Not Used? (0)
|
|
* 0x7d : Not Used? (0xf8)
|
|
* 0x7e : Constant (0x55), Validity signature
|
|
* 0x7f : Constant (0xaa), Validity signature
|
|
*/
|
|
static int nsp32_getprom_c16(nsp32_hw_data *data)
|
|
{
|
|
int ret, i;
|
|
nsp32_target *target;
|
|
int entry, val;
|
|
|
|
/*
|
|
* Reset time which is designated by EEPROM.
|
|
*
|
|
* TODO: Not used yet.
|
|
*/
|
|
data->resettime = nsp32_prom_read(data, 0x11);
|
|
|
|
/*
|
|
* each device Synchronous Transfer Period
|
|
*/
|
|
for (i = 0; i < NSP32_HOST_SCSIID; i++) {
|
|
target = &data->target[i];
|
|
ret = nsp32_prom_read(data, i);
|
|
switch (ret) {
|
|
case 0: /* 20MB/s */
|
|
val = 0x0c;
|
|
break;
|
|
case 1: /* 10MB/s */
|
|
val = 0x19;
|
|
break;
|
|
case 2: /* 5MB/s */
|
|
val = 0x32;
|
|
break;
|
|
case 3: /* ASYNC */
|
|
val = 0x00;
|
|
break;
|
|
default: /* default 20MB/s */
|
|
val = 0x0c;
|
|
break;
|
|
}
|
|
entry = nsp32_search_period_entry(data, target, val);
|
|
if (entry < 0 || trans_mode == ULTRA20M_MODE) {
|
|
/* search failed... set maximum speed */
|
|
entry = 0;
|
|
}
|
|
target->limit_entry = entry;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/*
|
|
* Atmel AT24C01A (drived in 5V) serial EEPROM routines
|
|
*/
|
|
static int nsp32_prom_read(nsp32_hw_data *data, int romaddr)
|
|
{
|
|
int i, val;
|
|
|
|
/* start condition */
|
|
nsp32_prom_start(data);
|
|
|
|
/* device address */
|
|
nsp32_prom_write_bit(data, 1); /* 1 */
|
|
nsp32_prom_write_bit(data, 0); /* 0 */
|
|
nsp32_prom_write_bit(data, 1); /* 1 */
|
|
nsp32_prom_write_bit(data, 0); /* 0 */
|
|
nsp32_prom_write_bit(data, 0); /* A2: 0 (GND) */
|
|
nsp32_prom_write_bit(data, 0); /* A1: 0 (GND) */
|
|
nsp32_prom_write_bit(data, 0); /* A0: 0 (GND) */
|
|
|
|
/* R/W: W for dummy write */
|
|
nsp32_prom_write_bit(data, 0);
|
|
|
|
/* ack */
|
|
nsp32_prom_write_bit(data, 0);
|
|
|
|
/* word address */
|
|
for (i = 7; i >= 0; i--) {
|
|
nsp32_prom_write_bit(data, ((romaddr >> i) & 1));
|
|
}
|
|
|
|
/* ack */
|
|
nsp32_prom_write_bit(data, 0);
|
|
|
|
/* start condition */
|
|
nsp32_prom_start(data);
|
|
|
|
/* device address */
|
|
nsp32_prom_write_bit(data, 1); /* 1 */
|
|
nsp32_prom_write_bit(data, 0); /* 0 */
|
|
nsp32_prom_write_bit(data, 1); /* 1 */
|
|
nsp32_prom_write_bit(data, 0); /* 0 */
|
|
nsp32_prom_write_bit(data, 0); /* A2: 0 (GND) */
|
|
nsp32_prom_write_bit(data, 0); /* A1: 0 (GND) */
|
|
nsp32_prom_write_bit(data, 0); /* A0: 0 (GND) */
|
|
|
|
/* R/W: R */
|
|
nsp32_prom_write_bit(data, 1);
|
|
|
|
/* ack */
|
|
nsp32_prom_write_bit(data, 0);
|
|
|
|
/* data... */
|
|
val = 0;
|
|
for (i = 7; i >= 0; i--) {
|
|
val += (nsp32_prom_read_bit(data) << i);
|
|
}
|
|
|
|
/* no ack */
|
|
nsp32_prom_write_bit(data, 1);
|
|
|
|
/* stop condition */
|
|
nsp32_prom_stop(data);
|
|
|
|
return val;
|
|
}
|
|
|
|
static void nsp32_prom_set(nsp32_hw_data *data, int bit, int val)
|
|
{
|
|
int base = data->BaseAddress;
|
|
int tmp;
|
|
|
|
tmp = nsp32_index_read1(base, SERIAL_ROM_CTL);
|
|
|
|
if (val == 0) {
|
|
tmp &= ~bit;
|
|
} else {
|
|
tmp |= bit;
|
|
}
|
|
|
|
nsp32_index_write1(base, SERIAL_ROM_CTL, tmp);
|
|
|
|
udelay(10);
|
|
}
|
|
|
|
static int nsp32_prom_get(nsp32_hw_data *data, int bit)
|
|
{
|
|
int base = data->BaseAddress;
|
|
int tmp, ret;
|
|
|
|
if (bit != SDA) {
|
|
nsp32_msg(KERN_ERR, "return value is not appropriate");
|
|
return 0;
|
|
}
|
|
|
|
|
|
tmp = nsp32_index_read1(base, SERIAL_ROM_CTL) & bit;
|
|
|
|
if (tmp == 0) {
|
|
ret = 0;
|
|
} else {
|
|
ret = 1;
|
|
}
|
|
|
|
udelay(10);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void nsp32_prom_start (nsp32_hw_data *data)
|
|
{
|
|
/* start condition */
|
|
nsp32_prom_set(data, SCL, 1);
|
|
nsp32_prom_set(data, SDA, 1);
|
|
nsp32_prom_set(data, ENA, 1); /* output mode */
|
|
nsp32_prom_set(data, SDA, 0); /* keeping SCL=1 and transiting
|
|
* SDA 1->0 is start condition */
|
|
nsp32_prom_set(data, SCL, 0);
|
|
}
|
|
|
|
static void nsp32_prom_stop (nsp32_hw_data *data)
|
|
{
|
|
/* stop condition */
|
|
nsp32_prom_set(data, SCL, 1);
|
|
nsp32_prom_set(data, SDA, 0);
|
|
nsp32_prom_set(data, ENA, 1); /* output mode */
|
|
nsp32_prom_set(data, SDA, 1);
|
|
nsp32_prom_set(data, SCL, 0);
|
|
}
|
|
|
|
static void nsp32_prom_write_bit(nsp32_hw_data *data, int val)
|
|
{
|
|
/* write */
|
|
nsp32_prom_set(data, SDA, val);
|
|
nsp32_prom_set(data, SCL, 1 );
|
|
nsp32_prom_set(data, SCL, 0 );
|
|
}
|
|
|
|
static int nsp32_prom_read_bit(nsp32_hw_data *data)
|
|
{
|
|
int val;
|
|
|
|
/* read */
|
|
nsp32_prom_set(data, ENA, 0); /* input mode */
|
|
nsp32_prom_set(data, SCL, 1);
|
|
|
|
val = nsp32_prom_get(data, SDA);
|
|
|
|
nsp32_prom_set(data, SCL, 0);
|
|
nsp32_prom_set(data, ENA, 1); /* output mode */
|
|
|
|
return val;
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
* Power Management
|
|
*/
|
|
#ifdef CONFIG_PM
|
|
|
|
/* Device suspended */
|
|
static int nsp32_suspend(struct pci_dev *pdev, pm_message_t state)
|
|
{
|
|
struct Scsi_Host *host = pci_get_drvdata(pdev);
|
|
|
|
nsp32_msg(KERN_INFO, "pci-suspend: pdev=0x%p, state=%ld, slot=%s, host=0x%p", pdev, state, pci_name(pdev), host);
|
|
|
|
pci_save_state (pdev);
|
|
pci_disable_device (pdev);
|
|
pci_set_power_state(pdev, pci_choose_state(pdev, state));
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Device woken up */
|
|
static int nsp32_resume(struct pci_dev *pdev)
|
|
{
|
|
struct Scsi_Host *host = pci_get_drvdata(pdev);
|
|
nsp32_hw_data *data = (nsp32_hw_data *)host->hostdata;
|
|
unsigned short reg;
|
|
|
|
nsp32_msg(KERN_INFO, "pci-resume: pdev=0x%p, slot=%s, host=0x%p", pdev, pci_name(pdev), host);
|
|
|
|
pci_set_power_state(pdev, PCI_D0);
|
|
pci_enable_wake (pdev, PCI_D0, 0);
|
|
pci_restore_state (pdev);
|
|
|
|
reg = nsp32_read2(data->BaseAddress, INDEX_REG);
|
|
|
|
nsp32_msg(KERN_INFO, "io=0x%x reg=0x%x", data->BaseAddress, reg);
|
|
|
|
if (reg == 0xffff) {
|
|
nsp32_msg(KERN_INFO, "missing device. abort resume.");
|
|
return 0;
|
|
}
|
|
|
|
nsp32hw_init (data);
|
|
nsp32_do_bus_reset(data);
|
|
|
|
nsp32_msg(KERN_INFO, "resume success");
|
|
|
|
return 0;
|
|
}
|
|
|
|
#endif
|
|
|
|
/************************************************************************
|
|
* PCI/Cardbus probe/remove routine
|
|
*/
|
|
static int __devinit nsp32_probe(struct pci_dev *pdev, const struct pci_device_id *id)
|
|
{
|
|
int ret;
|
|
nsp32_hw_data *data = &nsp32_data_base;
|
|
|
|
nsp32_dbg(NSP32_DEBUG_REGISTER, "enter");
|
|
|
|
ret = pci_enable_device(pdev);
|
|
if (ret) {
|
|
nsp32_msg(KERN_ERR, "failed to enable pci device");
|
|
return ret;
|
|
}
|
|
|
|
data->Pci = pdev;
|
|
data->pci_devid = id;
|
|
data->IrqNumber = pdev->irq;
|
|
data->BaseAddress = pci_resource_start(pdev, 0);
|
|
data->NumAddress = pci_resource_len (pdev, 0);
|
|
data->MmioAddress = ioremap_nocache(pci_resource_start(pdev, 1),
|
|
pci_resource_len (pdev, 1));
|
|
data->MmioLength = pci_resource_len (pdev, 1);
|
|
|
|
pci_set_master(pdev);
|
|
|
|
ret = nsp32_detect(pdev);
|
|
|
|
nsp32_msg(KERN_INFO, "irq: %i mmio: %p+0x%lx slot: %s model: %s",
|
|
pdev->irq,
|
|
data->MmioAddress, data->MmioLength,
|
|
pci_name(pdev),
|
|
nsp32_model[id->driver_data]);
|
|
|
|
nsp32_dbg(NSP32_DEBUG_REGISTER, "exit %d", ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void __devexit nsp32_remove(struct pci_dev *pdev)
|
|
{
|
|
struct Scsi_Host *host = pci_get_drvdata(pdev);
|
|
|
|
nsp32_dbg(NSP32_DEBUG_REGISTER, "enter");
|
|
|
|
scsi_remove_host(host);
|
|
|
|
nsp32_release(host);
|
|
|
|
scsi_host_put(host);
|
|
}
|
|
|
|
static struct pci_driver nsp32_driver = {
|
|
.name = "nsp32",
|
|
.id_table = nsp32_pci_table,
|
|
.probe = nsp32_probe,
|
|
.remove = __devexit_p(nsp32_remove),
|
|
#ifdef CONFIG_PM
|
|
.suspend = nsp32_suspend,
|
|
.resume = nsp32_resume,
|
|
#endif
|
|
};
|
|
|
|
/*********************************************************************
|
|
* Moule entry point
|
|
*/
|
|
static int __init init_nsp32(void) {
|
|
nsp32_msg(KERN_INFO, "loading...");
|
|
return pci_register_driver(&nsp32_driver);
|
|
}
|
|
|
|
static void __exit exit_nsp32(void) {
|
|
nsp32_msg(KERN_INFO, "unloading...");
|
|
pci_unregister_driver(&nsp32_driver);
|
|
}
|
|
|
|
module_init(init_nsp32);
|
|
module_exit(exit_nsp32);
|
|
|
|
/* end */
|