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+/* fdomain.c -- Future Domain TMC-16x0 SCSI driver
+ * Created: Sun May 3 18:53:19 1992 by faith@cs.unc.edu
+ * Revised: Mon Dec 28 21:59:02 1998 by faith@acm.org
+ * Author: Rickard E. Faith, faith@cs.unc.edu
+ * Copyright 1992-1996, 1998 Rickard E. Faith (faith@acm.org)
+ * Shared IRQ supported added 7/7/2001 Alan Cox <alan@lxorguk.ukuu.org.uk>
+
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+
+ **************************************************************************
+
+ SUMMARY:
+
+ Future Domain BIOS versions supported for autodetect:
+ 2.0, 3.0, 3.2, 3.4 (1.0), 3.5 (2.0), 3.6, 3.61
+ Chips are supported:
+ TMC-1800, TMC-18C50, TMC-18C30, TMC-36C70
+ Boards supported:
+ Future Domain TMC-1650, TMC-1660, TMC-1670, TMC-1680, TMC-1610M/MER/MEX
+ Future Domain TMC-3260 (PCI)
+ Quantum ISA-200S, ISA-250MG
+ Adaptec AHA-2920A (PCI) [BUT *NOT* AHA-2920C -- use aic7xxx instead]
+ IBM ?
+ LILO/INSMOD command-line options:
+ fdomain=<PORT_BASE>,<IRQ>[,<ADAPTER_ID>]
+
+
+
+ NOTE:
+
+ The Adaptec AHA-2920C has an Adaptec AIC-7850 chip on it.
+ Use the aic7xxx driver for this board.
+
+ The Adaptec AHA-2920A has a Future Domain chip on it, so this is the right
+ driver for that card. Unfortunately, the boxes will probably just say
+ "2920", so you'll have to look on the card for a Future Domain logo, or a
+ letter after the 2920.
+
+
+
+ THANKS:
+
+ Thanks to Adaptec for providing PCI boards for testing. This finally
+ enabled me to test the PCI detection and correct it for PCI boards that do
+ not have a BIOS at a standard ISA location. For PCI boards, LILO/INSMOD
+ command-line options should no longer be needed. --RF 18Nov98
+
+
+
+ DESCRIPTION:
+
+ This is the Linux low-level SCSI driver for Future Domain TMC-1660/1680
+ TMC-1650/1670, and TMC-3260 SCSI host adapters. The 1650 and 1670 have a
+ 25-pin external connector, whereas the 1660 and 1680 have a SCSI-2 50-pin
+ high-density external connector. The 1670 and 1680 have floppy disk
+ controllers built in. The TMC-3260 is a PCI bus card.
+
+ Future Domain's older boards are based on the TMC-1800 chip, and this
+ driver was originally written for a TMC-1680 board with the TMC-1800 chip.
+ More recently, boards are being produced with the TMC-18C50 and TMC-18C30
+ chips. The latest and greatest board may not work with this driver. If
+ you have to patch this driver so that it will recognize your board's BIOS
+ signature, then the driver may fail to function after the board is
+ detected.
+
+ Please note that the drive ordering that Future Domain implemented in BIOS
+ versions 3.4 and 3.5 is the opposite of the order (currently) used by the
+ rest of the SCSI industry. If you have BIOS version 3.4 or 3.5, and have
+ more than one drive, then the drive ordering will be the reverse of that
+ which you see under DOS. For example, under DOS SCSI ID 0 will be D: and
+ SCSI ID 1 will be C: (the boot device). Under Linux, SCSI ID 0 will be
+ /dev/sda and SCSI ID 1 will be /dev/sdb. The Linux ordering is consistent
+ with that provided by all the other SCSI drivers for Linux. If you want
+ this changed, you will probably have to patch the higher level SCSI code.
+ If you do so, please send me patches that are protected by #ifdefs.
+
+ If you have a TMC-8xx or TMC-9xx board, then this is not the driver for
+ your board. Please refer to the Seagate driver for more information and
+ possible support.
+
+
+
+ HISTORY:
+
+ Linux Driver Driver
+ Version Version Date Support/Notes
+
+ 0.0 3 May 1992 V2.0 BIOS; 1800 chip
+ 0.97 1.9 28 Jul 1992
+ 0.98.6 3.1 27 Nov 1992
+ 0.99 3.2 9 Dec 1992
+
+ 0.99.3 3.3 10 Jan 1993 V3.0 BIOS
+ 0.99.5 3.5 18 Feb 1993
+ 0.99.10 3.6 15 May 1993 V3.2 BIOS; 18C50 chip
+ 0.99.11 3.17 3 Jul 1993 (now under RCS)
+ 0.99.12 3.18 13 Aug 1993
+ 0.99.14 5.6 31 Oct 1993 (reselection code removed)
+
+ 0.99.15 5.9 23 Jan 1994 V3.4 BIOS (preliminary)
+ 1.0.8/1.1.1 5.15 1 Apr 1994 V3.4 BIOS; 18C30 chip (preliminary)
+ 1.0.9/1.1.3 5.16 7 Apr 1994 V3.4 BIOS; 18C30 chip
+ 1.1.38 5.18 30 Jul 1994 36C70 chip (PCI version of 18C30)
+ 1.1.62 5.20 2 Nov 1994 V3.5 BIOS
+ 1.1.73 5.22 7 Dec 1994 Quantum ISA-200S board; V2.0 BIOS
+
+ 1.1.82 5.26 14 Jan 1995 V3.5 BIOS; TMC-1610M/MER/MEX board
+ 1.2.10 5.28 5 Jun 1995 Quantum ISA-250MG board; V2.0, V2.01 BIOS
+ 1.3.4 5.31 23 Jun 1995 PCI BIOS-32 detection (preliminary)
+ 1.3.7 5.33 4 Jul 1995 PCI BIOS-32 detection
+ 1.3.28 5.36 17 Sep 1995 V3.61 BIOS; LILO command-line support
+ 1.3.34 5.39 12 Oct 1995 V3.60 BIOS; /proc
+ 1.3.72 5.39 8 Feb 1996 Adaptec AHA-2920 board
+ 1.3.85 5.41 4 Apr 1996
+ 2.0.12 5.44 8 Aug 1996 Use ID 7 for all PCI cards
+ 2.1.1 5.45 2 Oct 1996 Update ROM accesses for 2.1.x
+ 2.1.97 5.46 23 Apr 1998 Rewritten PCI detection routines [mj]
+ 2.1.11x 5.47 9 Aug 1998 Touched for 8 SCSI disk majors support
+ 5.48 18 Nov 1998 BIOS no longer needed for PCI detection
+ 2.2.0 5.50 28 Dec 1998 Support insmod parameters
+
+
+ REFERENCES USED:
+
+ "TMC-1800 SCSI Chip Specification (FDC-1800T)", Future Domain Corporation,
+ 1990.
+
+ "Technical Reference Manual: 18C50 SCSI Host Adapter Chip", Future Domain
+ Corporation, January 1992.
+
+ "LXT SCSI Products: Specifications and OEM Technical Manual (Revision
+ B/September 1991)", Maxtor Corporation, 1991.
+
+ "7213S product Manual (Revision P3)", Maxtor Corporation, 1992.
+
+ "Draft Proposed American National Standard: Small Computer System
+ Interface - 2 (SCSI-2)", Global Engineering Documents. (X3T9.2/86-109,
+ revision 10h, October 17, 1991)
+
+ Private communications, Drew Eckhardt (drew@cs.colorado.edu) and Eric
+ Youngdale (ericy@cais.com), 1992.
+
+ Private communication, Tuong Le (Future Domain Engineering department),
+ 1994. (Disk geometry computations for Future Domain BIOS version 3.4, and
+ TMC-18C30 detection.)
+
+ Hogan, Thom. The Programmer's PC Sourcebook. Microsoft Press, 1988. Page
+ 60 (2.39: Disk Partition Table Layout).
+
+ "18C30 Technical Reference Manual", Future Domain Corporation, 1993, page
+ 6-1.
+
+
+
+ NOTES ON REFERENCES:
+
+ The Maxtor manuals were free. Maxtor telephone technical support is
+ great!
+
+ The Future Domain manuals were $25 and $35. They document the chip, not
+ the TMC-16x0 boards, so some information I had to guess at. In 1992,
+ Future Domain sold DOS BIOS source for $250 and the UN*X driver source was
+ $750, but these required a non-disclosure agreement, so even if I could
+ have afforded them, they would *not* have been useful for writing this
+ publicly distributable driver. Future Domain technical support has
+ provided some information on the phone and have sent a few useful FAXs.
+ They have been much more helpful since they started to recognize that the
+ word "Linux" refers to an operating system :-).
+
+
+
+ ALPHA TESTERS:
+
+ There are many other alpha testers that come and go as the driver
+ develops. The people listed here were most helpful in times of greatest
+ need (mostly early on -- I've probably left out a few worthy people in
+ more recent times):
+
+ Todd Carrico (todd@wutc.wustl.edu), Dan Poirier (poirier@cs.unc.edu ), Ken
+ Corey (kenc@sol.acs.unt.edu), C. de Bruin (bruin@bruin@sterbbs.nl), Sakari
+ Aaltonen (sakaria@vipunen.hit.fi), John Rice (rice@xanth.cs.odu.edu), Brad
+ Yearwood (brad@optilink.com), and Ray Toy (toy@soho.crd.ge.com).
+
+ Special thanks to Tien-Wan Yang (twyang@cs.uh.edu), who graciously lent me
+ his 18C50-based card for debugging. He is the sole reason that this
+ driver works with the 18C50 chip.
+
+ Thanks to Dave Newman (dnewman@crl.com) for providing initial patches for
+ the version 3.4 BIOS.
+
+ Thanks to James T. McKinley (mckinley@msupa.pa.msu.edu) for providing
+ patches that support the TMC-3260, a PCI bus card with the 36C70 chip.
+ The 36C70 chip appears to be "completely compatible" with the 18C30 chip.
+
+ Thanks to Eric Kasten (tigger@petroglyph.cl.msu.edu) for providing the
+ patch for the version 3.5 BIOS.
+
+ Thanks for Stephen Henson (shenson@nyx10.cs.du.edu) for providing the
+ patch for the Quantum ISA-200S SCSI adapter.
+
+ Thanks to Adam Bowen for the signature to the 1610M/MER/MEX scsi cards, to
+ Martin Andrews (andrewm@ccfadm.eeg.ccf.org) for the signature to some
+ random TMC-1680 repackaged by IBM; and to Mintak Ng (mintak@panix.com) for
+ the version 3.61 BIOS signature.
+
+ Thanks for Mark Singer (elf@netcom.com) and Richard Simpson
+ (rsimpson@ewrcsdra.demon.co.uk) for more Quantum signatures and detective
+ work on the Quantum RAM layout.
+
+ Special thanks to James T. McKinley (mckinley@msupa.pa.msu.edu) for
+ providing patches for proper PCI BIOS32-mediated detection of the TMC-3260
+ card (a PCI bus card with the 36C70 chip). Please send James PCI-related
+ bug reports.
+
+ Thanks to Tom Cavin (tec@usa1.com) for preliminary command-line option
+ patches.
+
+ New PCI detection code written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>
+
+ Insmod parameter code based on patches from Daniel Graham
+ <graham@balance.uoregon.edu>.
+
+ All of the alpha testers deserve much thanks.
+
+
+
+ NOTES ON USER DEFINABLE OPTIONS:
+
+ DEBUG: This turns on the printing of various debug information.
+
+ ENABLE_PARITY: This turns on SCSI parity checking. With the current
+ driver, all attached devices must support SCSI parity. If none of your
+ devices support parity, then you can probably get the driver to work by
+ turning this option off. I have no way of testing this, however, and it
+ would appear that no one ever uses this option.
+
+ FIFO_COUNT: The host adapter has an 8K cache (host adapters based on the
+ 18C30 chip have a 2k cache). When this many 512 byte blocks are filled by
+ the SCSI device, an interrupt will be raised. Therefore, this could be as
+ low as 0, or as high as 16. Note, however, that values which are too high
+ or too low seem to prevent any interrupts from occurring, and thereby lock
+ up the machine. I have found that 2 is a good number, but throughput may
+ be increased by changing this value to values which are close to 2.
+ Please let me know if you try any different values.
+
+ RESELECTION: This is no longer an option, since I gave up trying to
+ implement it in version 4.x of this driver. It did not improve
+ performance at all and made the driver unstable (because I never found one
+ of the two race conditions which were introduced by the multiple
+ outstanding command code). The instability seems a very high price to pay
+ just so that you don't have to wait for the tape to rewind. If you want
+ this feature implemented, send me patches. I'll be happy to send a copy
+ of my (broken) driver to anyone who would like to see a copy.
+
+ **************************************************************************/
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/blkdev.h>
+#include <linux/spinlock.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/ioport.h>
+#include <linux/proc_fs.h>
+#include <linux/pci.h>
+#include <linux/stat.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+#include <scsi/scsicam.h>
+
+
+#include <scsi/scsi.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_host.h>
+#include <scsi/scsi_ioctl.h>
+#include "fdomain.h"
+
+#ifndef PCMCIA
+MODULE_AUTHOR("Rickard E. Faith");
+MODULE_DESCRIPTION("Future domain SCSI driver");
+MODULE_LICENSE("GPL");
+#endif
+
+
+#define VERSION "$Revision: 5.51 $"
+
+/* START OF USER DEFINABLE OPTIONS */
+
+#define DEBUG 0 /* Enable debugging output */
+#define ENABLE_PARITY 1 /* Enable SCSI Parity */
+#define FIFO_COUNT 2 /* Number of 512 byte blocks before INTR */
+
+/* END OF USER DEFINABLE OPTIONS */
+
+#if DEBUG
+#define EVERY_ACCESS 0 /* Write a line on every scsi access */
+#define ERRORS_ONLY 1 /* Only write a line if there is an error */
+#define DEBUG_DETECT 0 /* Debug fdomain_16x0_detect() */
+#define DEBUG_MESSAGES 1 /* Debug MESSAGE IN phase */
+#define DEBUG_ABORT 1 /* Debug abort() routine */
+#define DEBUG_RESET 1 /* Debug reset() routine */
+#define DEBUG_RACE 1 /* Debug interrupt-driven race condition */
+#else
+#define EVERY_ACCESS 0 /* LEAVE THESE ALONE--CHANGE THE ONES ABOVE */
+#define ERRORS_ONLY 0
+#define DEBUG_DETECT 0
+#define DEBUG_MESSAGES 0
+#define DEBUG_ABORT 0
+#define DEBUG_RESET 0
+#define DEBUG_RACE 0
+#endif
+
+/* Errors are reported on the line, so we don't need to report them again */
+#if EVERY_ACCESS
+#undef ERRORS_ONLY
+#define ERRORS_ONLY 0
+#endif
+
+#if ENABLE_PARITY
+#define PARITY_MASK 0x08
+#else
+#define PARITY_MASK 0x00
+#endif
+
+enum chip_type {
+ unknown = 0x00,
+ tmc1800 = 0x01,
+ tmc18c50 = 0x02,
+ tmc18c30 = 0x03,
+};
+
+enum {
+ in_arbitration = 0x02,
+ in_selection = 0x04,
+ in_other = 0x08,
+ disconnect = 0x10,
+ aborted = 0x20,
+ sent_ident = 0x40,
+};
+
+enum in_port_type {
+ Read_SCSI_Data = 0,
+ SCSI_Status = 1,
+ TMC_Status = 2,
+ FIFO_Status = 3, /* tmc18c50/tmc18c30 only */
+ Interrupt_Cond = 4, /* tmc18c50/tmc18c30 only */
+ LSB_ID_Code = 5,
+ MSB_ID_Code = 6,
+ Read_Loopback = 7,
+ SCSI_Data_NoACK = 8,
+ Interrupt_Status = 9,
+ Configuration1 = 10,
+ Configuration2 = 11, /* tmc18c50/tmc18c30 only */
+ Read_FIFO = 12,
+ FIFO_Data_Count = 14
+};
+
+enum out_port_type {
+ Write_SCSI_Data = 0,
+ SCSI_Cntl = 1,
+ Interrupt_Cntl = 2,
+ SCSI_Mode_Cntl = 3,
+ TMC_Cntl = 4,
+ Memory_Cntl = 5, /* tmc18c50/tmc18c30 only */
+ Write_Loopback = 7,
+ IO_Control = 11, /* tmc18c30 only */
+ Write_FIFO = 12
+};
+
+/* .bss will zero all the static variables below */
+static int port_base;
+static unsigned long bios_base;
+static void __iomem * bios_mem;
+static int bios_major;
+static int bios_minor;
+static int PCI_bus;
+#ifdef CONFIG_PCI
+static struct pci_dev *PCI_dev;
+#endif
+static int Quantum; /* Quantum board variant */
+static int interrupt_level;
+static volatile int in_command;
+static struct scsi_cmnd *current_SC;
+static enum chip_type chip = unknown;
+static int adapter_mask;
+static int this_id;
+static int setup_called;
+
+#if DEBUG_RACE
+static volatile int in_interrupt_flag;
+#endif
+
+static int FIFO_Size = 0x2000; /* 8k FIFO for
+ pre-tmc18c30 chips */
+
+static irqreturn_t do_fdomain_16x0_intr( int irq, void *dev_id );
+/* Allow insmod parameters to be like LILO parameters. For example:
+ insmod fdomain fdomain=0x140,11 */
+static char * fdomain = NULL;
+module_param(fdomain, charp, 0);
+
+#ifndef PCMCIA
+
+static unsigned long addresses[] = {
+ 0xc8000,
+ 0xca000,
+ 0xce000,
+ 0xde000,
+ 0xcc000, /* Extra addresses for PCI boards */
+ 0xd0000,
+ 0xe0000,
+};
+#define ADDRESS_COUNT ARRAY_SIZE(addresses)
+
+static unsigned short ports[] = { 0x140, 0x150, 0x160, 0x170 };
+#define PORT_COUNT ARRAY_SIZE(ports)
+
+static unsigned short ints[] = { 3, 5, 10, 11, 12, 14, 15, 0 };
+
+#endif /* !PCMCIA */
+
+/*
+
+ READ THIS BEFORE YOU ADD A SIGNATURE!
+
+ READING THIS SHORT NOTE CAN SAVE YOU LOTS OF TIME!
+
+ READ EVERY WORD, ESPECIALLY THE WORD *NOT*
+
+ This driver works *ONLY* for Future Domain cards using the TMC-1800,
+ TMC-18C50, or TMC-18C30 chip. This includes models TMC-1650, 1660, 1670,
+ and 1680. These are all 16-bit cards.
+
+ The following BIOS signature signatures are for boards which do *NOT*
+ work with this driver (these TMC-8xx and TMC-9xx boards may work with the
+ Seagate driver):
+
+ FUTURE DOMAIN CORP. (C) 1986-1988 V4.0I 03/16/88
+ FUTURE DOMAIN CORP. (C) 1986-1989 V5.0C2/14/89
+ FUTURE DOMAIN CORP. (C) 1986-1989 V6.0A7/28/89
+ FUTURE DOMAIN CORP. (C) 1986-1990 V6.0105/31/90
+ FUTURE DOMAIN CORP. (C) 1986-1990 V6.0209/18/90
+ FUTURE DOMAIN CORP. (C) 1986-1990 V7.009/18/90
+ FUTURE DOMAIN CORP. (C) 1992 V8.00.004/02/92
+
+ (The cards which do *NOT* work are all 8-bit cards -- although some of
+ them have a 16-bit form-factor, the upper 8-bits are used only for IRQs
+ and are *NOT* used for data. You can tell the difference by following
+ the tracings on the circuit board -- if only the IRQ lines are involved,
+ you have a "8-bit" card, and should *NOT* use this driver.)
+
+*/
+
+#ifndef PCMCIA
+
+static struct signature {
+ const char *signature;
+ int sig_offset;
+ int sig_length;
+ int major_bios_version;
+ int minor_bios_version;
+ int flag; /* 1 == PCI_bus, 2 == ISA_200S, 3 == ISA_250MG, 4 == ISA_200S */
+} signatures[] = {
+ /* 1 2 3 4 5 6 */
+ /* 123456789012345678901234567890123456789012345678901234567890 */
+ { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.07/28/89", 5, 50, 2, 0, 0 },
+ { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V1.07/28/89", 5, 50, 2, 0, 0 },
+ { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.07/28/89", 72, 50, 2, 0, 2 },
+ { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.0", 73, 43, 2, 0, 3 },
+ { "FUTURE DOMAIN CORP. (C) 1991 1800-V2.0.", 72, 39, 2, 0, 4 },
+ { "FUTURE DOMAIN CORP. (C) 1992 V3.00.004/02/92", 5, 44, 3, 0, 0 },
+ { "FUTURE DOMAIN TMC-18XX (C) 1993 V3.203/12/93", 5, 44, 3, 2, 0 },
+ { "IBM F1 P2 BIOS v1.0104/29/93", 5, 28, 3, -1, 0 },
+ { "Future Domain Corp. V1.0008/18/93", 5, 33, 3, 4, 0 },
+ { "Future Domain Corp. V1.0008/18/93", 26, 33, 3, 4, 1 },
+ { "Adaptec AHA-2920 PCI-SCSI Card", 42, 31, 3, -1, 1 },
+ { "IBM F1 P264/32", 5, 14, 3, -1, 1 },
+ /* This next signature may not be a 3.5 bios */
+ { "Future Domain Corp. V2.0108/18/93", 5, 33, 3, 5, 0 },
+ { "FUTURE DOMAIN CORP. V3.5008/18/93", 5, 34, 3, 5, 0 },
+ { "FUTURE DOMAIN 18c30/18c50/1800 (C) 1994 V3.5", 5, 44, 3, 5, 0 },
+ { "FUTURE DOMAIN CORP. V3.6008/18/93", 5, 34, 3, 6, 0 },
+ { "FUTURE DOMAIN CORP. V3.6108/18/93", 5, 34, 3, 6, 0 },
+ { "FUTURE DOMAIN TMC-18XX", 5, 22, -1, -1, 0 },
+
+ /* READ NOTICE ABOVE *BEFORE* YOU WASTE YOUR TIME ADDING A SIGNATURE
+ Also, fix the disk geometry code for your signature and send your
+ changes for faith@cs.unc.edu. Above all, do *NOT* change any old
+ signatures!
+
+ Note that the last line will match a "generic" 18XX bios. Because
+ Future Domain has changed the host SCSI ID and/or the location of the
+ geometry information in the on-board RAM area for each of the first
+ three BIOS's, it is still important to enter a fully qualified
+ signature in the table for any new BIOS's (after the host SCSI ID and
+ geometry location are verified). */
+};
+
+#define SIGNATURE_COUNT ARRAY_SIZE(signatures)
+
+#endif /* !PCMCIA */
+
+static void print_banner( struct Scsi_Host *shpnt )
+{
+ if (!shpnt) return; /* This won't ever happen */
+
+ if (bios_major < 0 && bios_minor < 0) {
+ printk(KERN_INFO "scsi%d: <fdomain> No BIOS; using scsi id %d\n",
+ shpnt->host_no, shpnt->this_id);
+ } else {
+ printk(KERN_INFO "scsi%d: <fdomain> BIOS version ", shpnt->host_no);
+
+ if (bios_major >= 0) printk("%d.", bios_major);
+ else printk("?.");
+
+ if (bios_minor >= 0) printk("%d", bios_minor);
+ else printk("?.");
+
+ printk( " at 0x%lx using scsi id %d\n",
+ bios_base, shpnt->this_id );
+ }
+
+ /* If this driver works for later FD PCI
+ boards, we will have to modify banner
+ for additional PCI cards, but for now if
+ it's PCI it's a TMC-3260 - JTM */
+ printk(KERN_INFO "scsi%d: <fdomain> %s chip at 0x%x irq ",
+ shpnt->host_no,
+ chip == tmc1800 ? "TMC-1800" : (chip == tmc18c50 ? "TMC-18C50" : (chip == tmc18c30 ? (PCI_bus ? "TMC-36C70 (PCI bus)" : "TMC-18C30") : "Unknown")),
+ port_base);
+
+ if (interrupt_level)
+ printk("%d", interrupt_level);
+ else
+ printk("<none>");
+
+ printk( "\n" );
+}
+
+int fdomain_setup(char *str)
+{
+ int ints[4];
+
+ (void)get_options(str, ARRAY_SIZE(ints), ints);
+
+ if (setup_called++ || ints[0] < 2 || ints[0] > 3) {
+ printk(KERN_INFO "scsi: <fdomain> Usage: fdomain=<PORT_BASE>,<IRQ>[,<ADAPTER_ID>]\n");
+ printk(KERN_ERR "scsi: <fdomain> Bad LILO/INSMOD parameters?\n");
+ return 0;
+ }
+
+ port_base = ints[0] >= 1 ? ints[1] : 0;
+ interrupt_level = ints[0] >= 2 ? ints[2] : 0;
+ this_id = ints[0] >= 3 ? ints[3] : 0;
+
+ bios_major = bios_minor = -1; /* Use geometry for BIOS version >= 3.4 */
+ ++setup_called;
+ return 1;
+}
+
+__setup("fdomain=", fdomain_setup);
+
+
+static void do_pause(unsigned amount) /* Pause for amount*10 milliseconds */
+{
+ mdelay(10*amount);
+}
+
+static inline void fdomain_make_bus_idle( void )
+{
+ outb(0, port_base + SCSI_Cntl);
+ outb(0, port_base + SCSI_Mode_Cntl);
+ if (chip == tmc18c50 || chip == tmc18c30)
+ outb(0x21 | PARITY_MASK, port_base + TMC_Cntl); /* Clear forced intr. */
+ else
+ outb(0x01 | PARITY_MASK, port_base + TMC_Cntl);
+}
+
+static int fdomain_is_valid_port( int port )
+{
+#if DEBUG_DETECT
+ printk( " (%x%x),",
+ inb( port + MSB_ID_Code ), inb( port + LSB_ID_Code ) );
+#endif
+
+ /* The MCA ID is a unique id for each MCA compatible board. We
+ are using ISA boards, but Future Domain provides the MCA ID
+ anyway. We can use this ID to ensure that this is a Future
+ Domain TMC-1660/TMC-1680.
+ */
+
+ if (inb( port + LSB_ID_Code ) != 0xe9) { /* test for 0x6127 id */
+ if (inb( port + LSB_ID_Code ) != 0x27) return 0;
+ if (inb( port + MSB_ID_Code ) != 0x61) return 0;
+ chip = tmc1800;
+ } else { /* test for 0xe960 id */
+ if (inb( port + MSB_ID_Code ) != 0x60) return 0;
+ chip = tmc18c50;
+
+ /* Try to toggle 32-bit mode. This only
+ works on an 18c30 chip. (User reports
+ say this works, so we should switch to
+ it in the near future.) */
+
+ outb( 0x80, port + IO_Control );
+ if ((inb( port + Configuration2 ) & 0x80) == 0x80) {
+ outb( 0x00, port + IO_Control );
+ if ((inb( port + Configuration2 ) & 0x80) == 0x00) {
+ chip = tmc18c30;
+ FIFO_Size = 0x800; /* 2k FIFO */
+ }
+ }
+ /* If that failed, we are an 18c50. */
+ }
+
+ return 1;
+}
+
+static int fdomain_test_loopback( void )
+{
+ int i;
+ int result;
+
+ for (i = 0; i < 255; i++) {
+ outb( i, port_base + Write_Loopback );
+ result = inb( port_base + Read_Loopback );
+ if (i != result)
+ return 1;
+ }
+ return 0;
+}
+
+#ifndef PCMCIA
+
+/* fdomain_get_irq assumes that we have a valid MCA ID for a
+ TMC-1660/TMC-1680 Future Domain board. Now, check to be sure the
+ bios_base matches these ports. If someone was unlucky enough to have
+ purchased more than one Future Domain board, then they will have to
+ modify this code, as we only detect one board here. [The one with the
+ lowest bios_base.]
+
+ Note that this routine is only used for systems without a PCI BIOS32
+ (e.g., ISA bus). For PCI bus systems, this routine will likely fail
+ unless one of the IRQs listed in the ints array is used by the board.
+ Sometimes it is possible to use the computer's BIOS setup screen to
+ configure a PCI system so that one of these IRQs will be used by the
+ Future Domain card. */
+
+static int fdomain_get_irq( int base )
+{
+ int options = inb(base + Configuration1);
+
+#if DEBUG_DETECT
+ printk("scsi: <fdomain> Options = %x\n", options);
+#endif
+
+ /* Check for board with lowest bios_base --
+ this isn't valid for the 18c30 or for
+ boards on the PCI bus, so just assume we
+ have the right board. */
+
+ if (chip != tmc18c30 && !PCI_bus && addresses[(options & 0xc0) >> 6 ] != bios_base)
+ return 0;
+ return ints[(options & 0x0e) >> 1];
+}
+
+static int fdomain_isa_detect( int *irq, int *iobase )
+{
+ int i, j;
+ int base = 0xdeadbeef;
+ int flag = 0;
+
+#if DEBUG_DETECT
+ printk( "scsi: <fdomain> fdomain_isa_detect:" );
+#endif
+
+ for (i = 0; i < ADDRESS_COUNT; i++) {
+ void __iomem *p = ioremap(addresses[i], 0x2000);
+ if (!p)
+ continue;
+#if DEBUG_DETECT
+ printk( " %lx(%lx),", addresses[i], bios_base );
+#endif
+ for (j = 0; j < SIGNATURE_COUNT; j++) {
+ if (check_signature(p + signatures[j].sig_offset,
+ signatures[j].signature,
+ signatures[j].sig_length )) {
+ bios_major = signatures[j].major_bios_version;
+ bios_minor = signatures[j].minor_bios_version;
+ PCI_bus = (signatures[j].flag == 1);
+ Quantum = (signatures[j].flag > 1) ? signatures[j].flag : 0;
+ bios_base = addresses[i];
+ bios_mem = p;
+ goto found;
+ }
+ }
+ iounmap(p);
+ }
+
+found:
+ if (bios_major == 2) {
+ /* The TMC-1660/TMC-1680 has a RAM area just after the BIOS ROM.
+ Assuming the ROM is enabled (otherwise we wouldn't have been
+ able to read the ROM signature :-), then the ROM sets up the
+ RAM area with some magic numbers, such as a list of port
+ base addresses and a list of the disk "geometry" reported to
+ DOS (this geometry has nothing to do with physical geometry).
+ */
+
+ switch (Quantum) {
+ case 2: /* ISA_200S */
+ case 3: /* ISA_250MG */
+ base = readb(bios_mem + 0x1fa2) + (readb(bios_mem + 0x1fa3) << 8);
+ break;
+ case 4: /* ISA_200S (another one) */
+ base = readb(bios_mem + 0x1fa3) + (readb(bios_mem + 0x1fa4) << 8);
+ break;
+ default:
+ base = readb(bios_mem + 0x1fcc) + (readb(bios_mem + 0x1fcd) << 8);
+ break;
+ }
+
+#if DEBUG_DETECT
+ printk( " %x,", base );
+#endif
+
+ for (i = 0; i < PORT_COUNT; i++) {
+ if (base == ports[i]) {
+ if (!request_region(base, 0x10, "fdomain"))
+ break;
+ if (!fdomain_is_valid_port(base)) {
+ release_region(base, 0x10);
+ break;
+ }
+ *irq = fdomain_get_irq( base );
+ *iobase = base;
+ return 1;
+ }
+ }
+
+ /* This is a bad sign. It usually means that someone patched the
+ BIOS signature list (the signatures variable) to contain a BIOS
+ signature for a board *OTHER THAN* the TMC-1660/TMC-1680. */
+
+#if DEBUG_DETECT
+ printk( " RAM FAILED, " );
+#endif
+ }
+
+ /* Anyway, the alternative to finding the address in the RAM is to just
+ search through every possible port address for one that is attached
+ to the Future Domain card. Don't panic, though, about reading all
+ these random port addresses -- there are rumors that the Future
+ Domain BIOS does something very similar.
+
+ Do not, however, check ports which the kernel knows are being used by
+ another driver. */
+
+ for (i = 0; i < PORT_COUNT; i++) {
+ base = ports[i];
+ if (!request_region(base, 0x10, "fdomain")) {
+#if DEBUG_DETECT
+ printk( " (%x inuse),", base );
+#endif
+ continue;
+ }
+#if DEBUG_DETECT
+ printk( " %x,", base );
+#endif
+ flag = fdomain_is_valid_port(base);
+ if (flag)
+ break;
+ release_region(base, 0x10);
+ }
+
+#if DEBUG_DETECT
+ if (flag) printk( " SUCCESS\n" );
+ else printk( " FAILURE\n" );
+#endif
+
+ if (!flag) return 0; /* iobase not found */
+
+ *irq = fdomain_get_irq( base );
+ *iobase = base;
+
+ return 1; /* success */
+}
+
+#else /* PCMCIA */
+
+static int fdomain_isa_detect( int *irq, int *iobase )
+{
+ if (irq)
+ *irq = 0;
+ if (iobase)
+ *iobase = 0;
+ return 0;
+}
+
+#endif /* !PCMCIA */
+
+
+/* PCI detection function: int fdomain_pci_bios_detect(int* irq, int*
+ iobase) This function gets the Interrupt Level and I/O base address from
+ the PCI configuration registers. */
+
+#ifdef CONFIG_PCI
+static int fdomain_pci_bios_detect( int *irq, int *iobase, struct pci_dev **ret_pdev )
+{
+ unsigned int pci_irq; /* PCI interrupt line */
+ unsigned long pci_base; /* PCI I/O base address */
+ struct pci_dev *pdev = NULL;
+
+#if DEBUG_DETECT
+ /* Tell how to print a list of the known PCI devices from bios32 and
+ list vendor and device IDs being used if in debug mode. */
+
+ printk( "scsi: <fdomain> INFO: use lspci -v to see list of PCI devices\n" );
+ printk( "scsi: <fdomain> TMC-3260 detect:"
+ " Using Vendor ID: 0x%x and Device ID: 0x%x\n",
+ PCI_VENDOR_ID_FD,
+ PCI_DEVICE_ID_FD_36C70 );
+#endif
+
+ if ((pdev = pci_get_device(PCI_VENDOR_ID_FD, PCI_DEVICE_ID_FD_36C70, pdev)) == NULL)
+ return 0;
+ if (pci_enable_device(pdev))
+ goto fail;
+
+#if DEBUG_DETECT
+ printk( "scsi: <fdomain> TMC-3260 detect:"
+ " PCI bus %u, device %u, function %u\n",
+ pdev->bus->number,
+ PCI_SLOT(pdev->devfn),
+ PCI_FUNC(pdev->devfn));
+#endif
+
+ /* We now have the appropriate device function for the FD board so we
+ just read the PCI config info from the registers. */
+
+ pci_base = pci_resource_start(pdev, 0);
+ pci_irq = pdev->irq;
+
+ if (!request_region( pci_base, 0x10, "fdomain" ))
+ goto fail;
+
+ /* Now we have the I/O base address and interrupt from the PCI
+ configuration registers. */
+
+ *irq = pci_irq;
+ *iobase = pci_base;
+ *ret_pdev = pdev;
+
+#if DEBUG_DETECT
+ printk( "scsi: <fdomain> TMC-3260 detect:"
+ " IRQ = %d, I/O base = 0x%x [0x%lx]\n", *irq, *iobase, pci_base );
+#endif
+
+ if (!fdomain_is_valid_port(pci_base)) {
+ printk(KERN_ERR "scsi: <fdomain> PCI card detected, but driver not loaded (invalid port)\n" );
+ release_region(pci_base, 0x10);
+ goto fail;
+ }
+
+ /* Fill in a few global variables. Ugh. */
+ bios_major = bios_minor = -1;
+ PCI_bus = 1;
+ PCI_dev = pdev;
+ Quantum = 0;
+ bios_base = 0;
+
+ return 1;
+fail:
+ pci_dev_put(pdev);
+ return 0;
+}
+
+#endif
+
+struct Scsi_Host *__fdomain_16x0_detect(struct scsi_host_template *tpnt )
+{
+ int retcode;
+ struct Scsi_Host *shpnt;
+ struct pci_dev *pdev = NULL;
+
+ if (setup_called) {
+#if DEBUG_DETECT
+ printk( "scsi: <fdomain> No BIOS, using port_base = 0x%x, irq = %d\n",
+ port_base, interrupt_level );
+#endif
+ if (!request_region(port_base, 0x10, "fdomain")) {
+ printk( "scsi: <fdomain> port 0x%x is busy\n", port_base );
+ printk( "scsi: <fdomain> Bad LILO/INSMOD parameters?\n" );
+ return NULL;
+ }
+ if (!fdomain_is_valid_port( port_base )) {
+ printk( "scsi: <fdomain> Cannot locate chip at port base 0x%x\n",
+ port_base );
+ printk( "scsi: <fdomain> Bad LILO/INSMOD parameters?\n" );
+ release_region(port_base, 0x10);
+ return NULL;
+ }
+ } else {
+ int flag = 0;
+
+#ifdef CONFIG_PCI
+ /* Try PCI detection first */
+ flag = fdomain_pci_bios_detect( &interrupt_level, &port_base, &pdev );
+#endif
+ if (!flag) {
+ /* Then try ISA bus detection */
+ flag = fdomain_isa_detect( &interrupt_level, &port_base );
+
+ if (!flag) {
+ printk( "scsi: <fdomain> Detection failed (no card)\n" );
+ return NULL;
+ }
+ }
+ }
+
+ fdomain_16x0_bus_reset(NULL);
+
+ if (fdomain_test_loopback()) {
+ printk(KERN_ERR "scsi: <fdomain> Detection failed (loopback test failed at port base 0x%x)\n", port_base);
+ if (setup_called) {
+ printk(KERN_ERR "scsi: <fdomain> Bad LILO/INSMOD parameters?\n");
+ }
+ goto fail;
+ }
+
+ if (this_id) {
+ tpnt->this_id = (this_id & 0x07);
+ adapter_mask = (1 << tpnt->this_id);
+ } else {
+ if (PCI_bus || (bios_major == 3 && bios_minor >= 2) || bios_major < 0) {
+ tpnt->this_id = 7;
+ adapter_mask = 0x80;
+ } else {
+ tpnt->this_id = 6;
+ adapter_mask = 0x40;
+ }
+ }
+
+/* Print out a banner here in case we can't
+ get resources. */
+
+ shpnt = scsi_register( tpnt, 0 );
+ if(shpnt == NULL) {
+ release_region(port_base, 0x10);
+ return NULL;
+ }
+ shpnt->irq = interrupt_level;
+ shpnt->io_port = port_base;
+ shpnt->n_io_port = 0x10;
+ print_banner( shpnt );
+
+ /* Log IRQ with kernel */
+ if (!interrupt_level) {
+ printk(KERN_ERR "scsi: <fdomain> Card Detected, but driver not loaded (no IRQ)\n" );
+ goto fail;
+ } else {
+ /* Register the IRQ with the kernel */
+
+ retcode = request_irq( interrupt_level,
+ do_fdomain_16x0_intr, pdev?IRQF_SHARED:0, "fdomain", shpnt);
+
+ if (retcode < 0) {
+ if (retcode == -EINVAL) {
+ printk(KERN_ERR "scsi: <fdomain> IRQ %d is bad!\n", interrupt_level );
+ printk(KERN_ERR " This shouldn't happen!\n" );
+ printk(KERN_ERR " Send mail to faith@acm.org\n" );
+ } else if (retcode == -EBUSY) {
+ printk(KERN_ERR "scsi: <fdomain> IRQ %d is already in use!\n", interrupt_level );
+ printk(KERN_ERR " Please use another IRQ!\n" );
+ } else {
+ printk(KERN_ERR "scsi: <fdomain> Error getting IRQ %d\n", interrupt_level );
+ printk(KERN_ERR " This shouldn't happen!\n" );
+ printk(KERN_ERR " Send mail to faith@acm.org\n" );
+ }
+ printk(KERN_ERR "scsi: <fdomain> Detected, but driver not loaded (IRQ)\n" );
+ goto fail;
+ }
+ }
+ return shpnt;
+fail:
+ pci_dev_put(pdev);
+ release_region(port_base, 0x10);
+ return NULL;
+}
+
+static int fdomain_16x0_detect(struct scsi_host_template *tpnt)
+{
+ if (fdomain)
+ fdomain_setup(fdomain);
+ return (__fdomain_16x0_detect(tpnt) != NULL);
+}
+
+static const char *fdomain_16x0_info( struct Scsi_Host *ignore )
+{
+ static char buffer[128];
+ char *pt;
+
+ strcpy( buffer, "Future Domain 16-bit SCSI Driver Version" );
+ if (strchr( VERSION, ':')) { /* Assume VERSION is an RCS Revision string */
+ strcat( buffer, strchr( VERSION, ':' ) + 1 );
+ pt = strrchr( buffer, '$') - 1;
+ if (!pt) /* Stripped RCS Revision string? */
+ pt = buffer + strlen( buffer ) - 1;
+ if (*pt != ' ')
+ ++pt;
+ *pt = '\0';
+ } else { /* Assume VERSION is a number */
+ strcat( buffer, " " VERSION );
+ }
+
+ return buffer;
+}
+
+#if 0
+static int fdomain_arbitrate( void )
+{
+ int status = 0;
+ unsigned long timeout;
+
+#if EVERY_ACCESS
+ printk( "fdomain_arbitrate()\n" );
+#endif
+
+ outb(0x00, port_base + SCSI_Cntl); /* Disable data drivers */
+ outb(adapter_mask, port_base + SCSI_Data_NoACK); /* Set our id bit */
+ outb(0x04 | PARITY_MASK, port_base + TMC_Cntl); /* Start arbitration */
+
+ timeout = 500;
+ do {
+ status = inb(port_base + TMC_Status); /* Read adapter status */
+ if (status & 0x02) /* Arbitration complete */
+ return 0;
+ mdelay(1); /* Wait one millisecond */
+ } while (--timeout);
+
+ /* Make bus idle */
+ fdomain_make_bus_idle();
+
+#if EVERY_ACCESS
+ printk( "Arbitration failed, status = %x\n", status );
+#endif
+#if ERRORS_ONLY
+ printk( "scsi: <fdomain> Arbitration failed, status = %x\n", status );
+#endif
+ return 1;
+}
+#endif
+
+static int fdomain_select( int target )
+{
+ int status;
+ unsigned long timeout;
+#if ERRORS_ONLY
+ static int flag = 0;
+#endif
+
+ outb(0x82, port_base + SCSI_Cntl); /* Bus Enable + Select */
+ outb(adapter_mask | (1 << target), port_base + SCSI_Data_NoACK);
+
+ /* Stop arbitration and enable parity */
+ outb(PARITY_MASK, port_base + TMC_Cntl);
+
+ timeout = 350; /* 350 msec */
+
+ do {
+ status = inb(port_base + SCSI_Status); /* Read adapter status */
+ if (status & 1) { /* Busy asserted */
+ /* Enable SCSI Bus (on error, should make bus idle with 0) */
+ outb(0x80, port_base + SCSI_Cntl);
+ return 0;
+ }
+ mdelay(1); /* wait one msec */
+ } while (--timeout);
+ /* Make bus idle */
+ fdomain_make_bus_idle();
+#if EVERY_ACCESS
+ if (!target) printk( "Selection failed\n" );
+#endif
+#if ERRORS_ONLY
+ if (!target) {
+ if (!flag) /* Skip first failure for all chips. */
+ ++flag;
+ else
+ printk( "scsi: <fdomain> Selection failed\n" );
+ }
+#endif
+ return 1;
+}
+
+static void my_done(int error)
+{
+ if (in_command) {
+ in_command = 0;
+ outb(0x00, port_base + Interrupt_Cntl);
+ fdomain_make_bus_idle();
+ current_SC->result = error;
+ if (current_SC->scsi_done)
+ current_SC->scsi_done( current_SC );
+ else panic( "scsi: <fdomain> current_SC->scsi_done() == NULL" );
+ } else {
+ panic( "scsi: <fdomain> my_done() called outside of command\n" );
+ }
+#if DEBUG_RACE
+ in_interrupt_flag = 0;
+#endif
+}
+
+static irqreturn_t do_fdomain_16x0_intr(int irq, void *dev_id)
+{
+ unsigned long flags;
+ int status;
+ int done = 0;
+ unsigned data_count;
+
+ /* The fdomain_16x0_intr is only called via
+ the interrupt handler. The goal of the
+ sti() here is to allow other
+ interruptions while this routine is
+ running. */
+
+ /* Check for other IRQ sources */
+ if ((inb(port_base + TMC_Status) & 0x01) == 0)
+ return IRQ_NONE;
+
+ /* It is our IRQ */
+ outb(0x00, port_base + Interrupt_Cntl);
+
+ /* We usually have one spurious interrupt after each command. Ignore it. */
+ if (!in_command || !current_SC) { /* Spurious interrupt */
+#if EVERY_ACCESS
+ printk( "Spurious interrupt, in_command = %d, current_SC = %x\n",
+ in_command, current_SC );
+#endif
+ return IRQ_NONE;
+ }
+
+ /* Abort calls my_done, so we do nothing here. */
+ if (current_SC->SCp.phase & aborted) {
+#if DEBUG_ABORT
+ printk( "scsi: <fdomain> Interrupt after abort, ignoring\n" );
+#endif
+ /*
+ return IRQ_HANDLED; */
+ }
+
+#if DEBUG_RACE
+ ++in_interrupt_flag;
+#endif
+
+ if (current_SC->SCp.phase & in_arbitration) {
+ status = inb(port_base + TMC_Status); /* Read adapter status */
+ if (!(status & 0x02)) {
+#if EVERY_ACCESS
+ printk( " AFAIL " );
+#endif
+ spin_lock_irqsave(current_SC->device->host->host_lock, flags);
+ my_done( DID_BUS_BUSY << 16 );
+ spin_unlock_irqrestore(current_SC->device->host->host_lock, flags);
+ return IRQ_HANDLED;
+ }
+ current_SC->SCp.phase = in_selection;
+
+ outb(0x40 | FIFO_COUNT, port_base + Interrupt_Cntl);
+
+ outb(0x82, port_base + SCSI_Cntl); /* Bus Enable + Select */
+ outb(adapter_mask | (1 << scmd_id(current_SC)), port_base + SCSI_Data_NoACK);
+
+ /* Stop arbitration and enable parity */
+ outb(0x10 | PARITY_MASK, port_base + TMC_Cntl);
+#if DEBUG_RACE
+ in_interrupt_flag = 0;
+#endif
+ return IRQ_HANDLED;
+ } else if (current_SC->SCp.phase & in_selection) {
+ status = inb(port_base + SCSI_Status);
+ if (!(status & 0x01)) {
+ /* Try again, for slow devices */
+ if (fdomain_select( scmd_id(current_SC) )) {
+#if EVERY_ACCESS
+ printk( " SFAIL " );
+#endif
+ spin_lock_irqsave(current_SC->device->host->host_lock, flags);
+ my_done( DID_NO_CONNECT << 16 );
+ spin_unlock_irqrestore(current_SC->device->host->host_lock, flags);
+ return IRQ_HANDLED;
+ } else {
+#if EVERY_ACCESS
+ printk( " AltSel " );
+#endif
+ /* Stop arbitration and enable parity */
+ outb(0x10 | PARITY_MASK, port_base + TMC_Cntl);
+ }
+ }
+ current_SC->SCp.phase = in_other;
+ outb(0x90 | FIFO_COUNT, port_base + Interrupt_Cntl);
+ outb(0x80, port_base + SCSI_Cntl);
+#if DEBUG_RACE
+ in_interrupt_flag = 0;
+#endif
+ return IRQ_HANDLED;
+ }
+
+ /* current_SC->SCp.phase == in_other: this is the body of the routine */
+
+ status = inb(port_base + SCSI_Status);
+
+ if (status & 0x10) { /* REQ */
+
+ switch (status & 0x0e) {
+
+ case 0x08: /* COMMAND OUT */
+ outb(current_SC->cmnd[current_SC->SCp.sent_command++],
+ port_base + Write_SCSI_Data);
+#if EVERY_ACCESS
+ printk( "CMD = %x,",
+ current_SC->cmnd[ current_SC->SCp.sent_command - 1] );
+#endif
+ break;
+ case 0x00: /* DATA OUT -- tmc18c50/tmc18c30 only */
+ if (chip != tmc1800 && !current_SC->SCp.have_data_in) {
+ current_SC->SCp.have_data_in = -1;
+ outb(0xd0 | PARITY_MASK, port_base + TMC_Cntl);
+ }
+ break;
+ case 0x04: /* DATA IN -- tmc18c50/tmc18c30 only */
+ if (chip != tmc1800 && !current_SC->SCp.have_data_in) {
+ current_SC->SCp.have_data_in = 1;
+ outb(0x90 | PARITY_MASK, port_base + TMC_Cntl);
+ }
+ break;
+ case 0x0c: /* STATUS IN */
+ current_SC->SCp.Status = inb(port_base + Read_SCSI_Data);
+#if EVERY_ACCESS
+ printk( "Status = %x, ", current_SC->SCp.Status );
+#endif
+#if ERRORS_ONLY
+ if (current_SC->SCp.Status
+ && current_SC->SCp.Status != 2
+ && current_SC->SCp.Status != 8) {
+ printk( "scsi: <fdomain> target = %d, command = %x, status = %x\n",
+ current_SC->device->id,
+ current_SC->cmnd[0],
+ current_SC->SCp.Status );
+ }
+#endif
+ break;
+ case 0x0a: /* MESSAGE OUT */
+ outb(MESSAGE_REJECT, port_base + Write_SCSI_Data); /* Reject */
+ break;
+ case 0x0e: /* MESSAGE IN */
+ current_SC->SCp.Message = inb(port_base + Read_SCSI_Data);
+#if EVERY_ACCESS
+ printk( "Message = %x, ", current_SC->SCp.Message );
+#endif
+ if (!current_SC->SCp.Message) ++done;
+#if DEBUG_MESSAGES || EVERY_ACCESS
+ if (current_SC->SCp.Message) {
+ printk( "scsi: <fdomain> message = %x\n",
+ current_SC->SCp.Message );
+ }
+#endif
+ break;
+ }
+ }
+
+ if (chip == tmc1800 && !current_SC->SCp.have_data_in
+ && (current_SC->SCp.sent_command >= current_SC->cmd_len)) {
+
+ if(current_SC->sc_data_direction == DMA_TO_DEVICE)
+ {
+ current_SC->SCp.have_data_in = -1;
+ outb(0xd0 | PARITY_MASK, port_base + TMC_Cntl);
+ }
+ else
+ {
+ current_SC->SCp.have_data_in = 1;
+ outb(0x90 | PARITY_MASK, port_base + TMC_Cntl);
+ }
+ }
+
+ if (current_SC->SCp.have_data_in == -1) { /* DATA OUT */
+ while ((data_count = FIFO_Size - inw(port_base + FIFO_Data_Count)) > 512) {
+#if EVERY_ACCESS
+ printk( "DC=%d, ", data_count ) ;
+#endif
+ if (data_count > current_SC->SCp.this_residual)
+ data_count = current_SC->SCp.this_residual;
+ if (data_count > 0) {
+#if EVERY_ACCESS
+ printk( "%d OUT, ", data_count );
+#endif
+ if (data_count == 1) {
+ outb(*current_SC->SCp.ptr++, port_base + Write_FIFO);
+ --current_SC->SCp.this_residual;
+ } else {
+ data_count >>= 1;
+ outsw(port_base + Write_FIFO, current_SC->SCp.ptr, data_count);
+ current_SC->SCp.ptr += 2 * data_count;
+ current_SC->SCp.this_residual -= 2 * data_count;
+ }
+ }
+ if (!current_SC->SCp.this_residual) {
+ if (current_SC->SCp.buffers_residual) {
+ --current_SC->SCp.buffers_residual;
+ ++current_SC->SCp.buffer;
+ current_SC->SCp.ptr = sg_virt(current_SC->SCp.buffer);
+ current_SC->SCp.this_residual = current_SC->SCp.buffer->length;
+ } else
+ break;
+ }
+ }
+ }
+
+ if (current_SC->SCp.have_data_in == 1) { /* DATA IN */
+ while ((data_count = inw(port_base + FIFO_Data_Count)) > 0) {
+#if EVERY_ACCESS
+ printk( "DC=%d, ", data_count );
+#endif
+ if (data_count > current_SC->SCp.this_residual)
+ data_count = current_SC->SCp.this_residual;
+ if (data_count) {
+#if EVERY_ACCESS
+ printk( "%d IN, ", data_count );
+#endif
+ if (data_count == 1) {
+ *current_SC->SCp.ptr++ = inb(port_base + Read_FIFO);
+ --current_SC->SCp.this_residual;
+ } else {
+ data_count >>= 1; /* Number of words */
+ insw(port_base + Read_FIFO, current_SC->SCp.ptr, data_count);
+ current_SC->SCp.ptr += 2 * data_count;
+ current_SC->SCp.this_residual -= 2 * data_count;
+ }
+ }
+ if (!current_SC->SCp.this_residual
+ && current_SC->SCp.buffers_residual) {
+ --current_SC->SCp.buffers_residual;
+ ++current_SC->SCp.buffer;
+ current_SC->SCp.ptr = sg_virt(current_SC->SCp.buffer);
+ current_SC->SCp.this_residual = current_SC->SCp.buffer->length;
+ }
+ }
+ }
+
+ if (done) {
+#if EVERY_ACCESS
+ printk( " ** IN DONE %d ** ", current_SC->SCp.have_data_in );
+#endif
+
+#if ERRORS_ONLY
+ if (current_SC->cmnd[0] == REQUEST_SENSE && !current_SC->SCp.Status) {
+ char *buf = scsi_sglist(current_SC);
+ if ((unsigned char)(*(buf + 2)) & 0x0f) {
+ unsigned char key;
+ unsigned char code;
+ unsigned char qualifier;
+
+ key = (unsigned char)(*(buf + 2)) & 0x0f;
+ code = (unsigned char)(*(buf + 12));
+ qualifier = (unsigned char)(*(buf + 13));
+
+ if (key != UNIT_ATTENTION
+ && !(key == NOT_READY
+ && code == 0x04
+ && (!qualifier || qualifier == 0x02 || qualifier == 0x01))
+ && !(key == ILLEGAL_REQUEST && (code == 0x25
+ || code == 0x24
+ || !code)))
+
+ printk( "scsi: <fdomain> REQUEST SENSE"
+ " Key = %x, Code = %x, Qualifier = %x\n",
+ key, code, qualifier );
+ }
+ }
+#endif
+#if EVERY_ACCESS
+ printk( "BEFORE MY_DONE. . ." );
+#endif
+ spin_lock_irqsave(current_SC->device->host->host_lock, flags);
+ my_done( (current_SC->SCp.Status & 0xff)
+ | ((current_SC->SCp.Message & 0xff) << 8) | (DID_OK << 16) );
+ spin_unlock_irqrestore(current_SC->device->host->host_lock, flags);
+#if EVERY_ACCESS
+ printk( "RETURNING.\n" );
+#endif
+
+ } else {
+ if (current_SC->SCp.phase & disconnect) {
+ outb(0xd0 | FIFO_COUNT, port_base + Interrupt_Cntl);
+ outb(0x00, port_base + SCSI_Cntl);
+ } else {
+ outb(0x90 | FIFO_COUNT, port_base + Interrupt_Cntl);
+ }
+ }
+#if DEBUG_RACE
+ in_interrupt_flag = 0;
+#endif
+ return IRQ_HANDLED;
+}
+
+static int fdomain_16x0_queue_lck(struct scsi_cmnd *SCpnt,
+ void (*done)(struct scsi_cmnd *))
+{
+ if (in_command) {
+ panic( "scsi: <fdomain> fdomain_16x0_queue() NOT REENTRANT!\n" );
+ }
+#if EVERY_ACCESS
+ printk( "queue: target = %d cmnd = 0x%02x pieces = %d size = %u\n",
+ SCpnt->target,
+ *(unsigned char *)SCpnt->cmnd,
+ scsi_sg_count(SCpnt),
+ scsi_bufflen(SCpnt));
+#endif
+
+ fdomain_make_bus_idle();
+
+ current_SC = SCpnt; /* Save this for the done function */
+ current_SC->scsi_done = done;
+
+ /* Initialize static data */
+
+ if (scsi_sg_count(current_SC)) {
+ current_SC->SCp.buffer = scsi_sglist(current_SC);
+ current_SC->SCp.ptr = sg_virt(current_SC->SCp.buffer);
+ current_SC->SCp.this_residual = current_SC->SCp.buffer->length;
+ current_SC->SCp.buffers_residual = scsi_sg_count(current_SC) - 1;
+ } else {
+ current_SC->SCp.ptr = NULL;
+ current_SC->SCp.this_residual = 0;
+ current_SC->SCp.buffer = NULL;
+ current_SC->SCp.buffers_residual = 0;
+ }
+
+ current_SC->SCp.Status = 0;
+ current_SC->SCp.Message = 0;
+ current_SC->SCp.have_data_in = 0;
+ current_SC->SCp.sent_command = 0;
+ current_SC->SCp.phase = in_arbitration;
+
+ /* Start arbitration */
+ outb(0x00, port_base + Interrupt_Cntl);
+ outb(0x00, port_base + SCSI_Cntl); /* Disable data drivers */
+ outb(adapter_mask, port_base + SCSI_Data_NoACK); /* Set our id bit */
+ ++in_command;
+ outb(0x20, port_base + Interrupt_Cntl);
+ outb(0x14 | PARITY_MASK, port_base + TMC_Cntl); /* Start arbitration */
+
+ return 0;
+}
+
+static DEF_SCSI_QCMD(fdomain_16x0_queue)
+
+#if DEBUG_ABORT
+static void print_info(struct scsi_cmnd *SCpnt)
+{
+ unsigned int imr;
+ unsigned int irr;
+ unsigned int isr;
+
+ if (!SCpnt || !SCpnt->device || !SCpnt->device->host) {
+ printk(KERN_WARNING "scsi: <fdomain> Cannot provide detailed information\n");
+ return;
+ }
+
+ printk(KERN_INFO "%s\n", fdomain_16x0_info( SCpnt->device->host ) );
+ print_banner(SCpnt->device->host);
+ switch (SCpnt->SCp.phase) {
+ case in_arbitration: printk("arbitration"); break;
+ case in_selection: printk("selection"); break;
+ case in_other: printk("other"); break;
+ default: printk("unknown"); break;
+ }
+
+ printk( " (%d), target = %d cmnd = 0x%02x pieces = %d size = %u\n",
+ SCpnt->SCp.phase,
+ SCpnt->device->id,
+ *(unsigned char *)SCpnt->cmnd,
+ scsi_sg_count(SCpnt),
+ scsi_bufflen(SCpnt));
+ printk( "sent_command = %d, have_data_in = %d, timeout = %d\n",
+ SCpnt->SCp.sent_command,
+ SCpnt->SCp.have_data_in,
+ SCpnt->timeout );
+#if DEBUG_RACE
+ printk( "in_interrupt_flag = %d\n", in_interrupt_flag );
+#endif
+
+ imr = (inb( 0x0a1 ) << 8) + inb( 0x21 );
+ outb( 0x0a, 0xa0 );
+ irr = inb( 0xa0 ) << 8;
+ outb( 0x0a, 0x20 );
+ irr += inb( 0x20 );
+ outb( 0x0b, 0xa0 );
+ isr = inb( 0xa0 ) << 8;
+ outb( 0x0b, 0x20 );
+ isr += inb( 0x20 );
+
+ /* Print out interesting information */
+ printk( "IMR = 0x%04x", imr );
+ if (imr & (1 << interrupt_level))
+ printk( " (masked)" );
+ printk( ", IRR = 0x%04x, ISR = 0x%04x\n", irr, isr );
+
+ printk( "SCSI Status = 0x%02x\n", inb(port_base + SCSI_Status));
+ printk( "TMC Status = 0x%02x", inb(port_base + TMC_Status));
+ if (inb((port_base + TMC_Status) & 1))
+ printk( " (interrupt)" );
+ printk( "\n" );
+ printk("Interrupt Status = 0x%02x", inb(port_base + Interrupt_Status));
+ if (inb(port_base + Interrupt_Status) & 0x08)
+ printk( " (enabled)" );
+ printk( "\n" );
+ if (chip == tmc18c50 || chip == tmc18c30) {
+ printk("FIFO Status = 0x%02x\n", inb(port_base + FIFO_Status));
+ printk( "Int. Condition = 0x%02x\n",
+ inb( port_base + Interrupt_Cond ) );
+ }
+ printk( "Configuration 1 = 0x%02x\n", inb( port_base + Configuration1 ) );
+ if (chip == tmc18c50 || chip == tmc18c30)
+ printk( "Configuration 2 = 0x%02x\n",
+ inb( port_base + Configuration2 ) );
+}
+#endif
+
+static int fdomain_16x0_abort(struct scsi_cmnd *SCpnt)
+{
+#if EVERY_ACCESS || ERRORS_ONLY || DEBUG_ABORT
+ printk( "scsi: <fdomain> abort " );
+#endif
+
+ if (!in_command) {
+#if EVERY_ACCESS || ERRORS_ONLY
+ printk( " (not in command)\n" );
+#endif
+ return FAILED;
+ } else printk( "\n" );
+
+#if DEBUG_ABORT
+ print_info( SCpnt );
+#endif
+
+ fdomain_make_bus_idle();
+ current_SC->SCp.phase |= aborted;
+ current_SC->result = DID_ABORT << 16;
+
+ /* Aborts are not done well. . . */
+ my_done(DID_ABORT << 16);
+ return SUCCESS;
+}
+
+int fdomain_16x0_bus_reset(struct scsi_cmnd *SCpnt)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+
+ outb(1, port_base + SCSI_Cntl);
+ do_pause( 2 );
+ outb(0, port_base + SCSI_Cntl);
+ do_pause( 115 );
+ outb(0, port_base + SCSI_Mode_Cntl);
+ outb(PARITY_MASK, port_base + TMC_Cntl);
+
+ local_irq_restore(flags);
+ return SUCCESS;
+}
+
+static int fdomain_16x0_biosparam(struct scsi_device *sdev,
+ struct block_device *bdev,
+ sector_t capacity, int *info_array)
+{
+ int drive;
+ int size = capacity;
+ unsigned long offset;
+ struct drive_info {
+ unsigned short cylinders;
+ unsigned char heads;
+ unsigned char sectors;
+ } i;
+
+ /* NOTES:
+ The RAM area starts at 0x1f00 from the bios_base address.
+
+ For BIOS Version 2.0:
+
+ The drive parameter table seems to start at 0x1f30.
+ The first byte's purpose is not known.
+ Next is the cylinder, head, and sector information.
+ The last 4 bytes appear to be the drive's size in sectors.
+ The other bytes in the drive parameter table are unknown.
+ If anyone figures them out, please send me mail, and I will
+ update these notes.
+
+ Tape drives do not get placed in this table.
+
+ There is another table at 0x1fea:
+ If the byte is 0x01, then the SCSI ID is not in use.
+ If the byte is 0x18 or 0x48, then the SCSI ID is in use,
+ although tapes don't seem to be in this table. I haven't
+ seen any other numbers (in a limited sample).
+
+ 0x1f2d is a drive count (i.e., not including tapes)
+
+ The table at 0x1fcc are I/O ports addresses for the various
+ operations. I calculate these by hand in this driver code.
+
+
+
+ For the ISA-200S version of BIOS Version 2.0:
+
+ The drive parameter table starts at 0x1f33.
+
+ WARNING: Assume that the table entry is 25 bytes long. Someone needs
+ to check this for the Quantum ISA-200S card.
+
+
+
+ For BIOS Version 3.2:
+
+ The drive parameter table starts at 0x1f70. Each entry is
+ 0x0a bytes long. Heads are one less than we need to report.
+ */
+
+ if (MAJOR(bdev->bd_dev) != SCSI_DISK0_MAJOR) {
+ printk("scsi: <fdomain> fdomain_16x0_biosparam: too many disks");
+ return 0;
+ }
+ drive = MINOR(bdev->bd_dev) >> 4;
+
+ if (bios_major == 2) {
+ switch (Quantum) {
+ case 2: /* ISA_200S */
+ /* The value of 25 has never been verified.
+ It should probably be 15. */
+ offset = 0x1f33 + drive * 25;
+ break;
+ case 3: /* ISA_250MG */
+ offset = 0x1f36 + drive * 15;
+ break;
+ case 4: /* ISA_200S (another one) */
+ offset = 0x1f34 + drive * 15;
+ break;
+ default:
+ offset = 0x1f31 + drive * 25;
+ break;
+ }
+ memcpy_fromio( &i, bios_mem + offset, sizeof( struct drive_info ) );
+ info_array[0] = i.heads;
+ info_array[1] = i.sectors;
+ info_array[2] = i.cylinders;
+ } else if (bios_major == 3
+ && bios_minor >= 0
+ && bios_minor < 4) { /* 3.0 and 3.2 BIOS */
+ memcpy_fromio( &i, bios_mem + 0x1f71 + drive * 10,
+ sizeof( struct drive_info ) );
+ info_array[0] = i.heads + 1;
+ info_array[1] = i.sectors;
+ info_array[2] = i.cylinders;
+ } else { /* 3.4 BIOS (and up?) */
+ /* This algorithm was provided by Future Domain (much thanks!). */
+ unsigned char *p = scsi_bios_ptable(bdev);
+
+ if (p && p[65] == 0xaa && p[64] == 0x55 /* Partition table valid */
+ && p[4]) { /* Partition type */
+
+ /* The partition table layout is as follows:
+
+ Start: 0x1b3h
+ Offset: 0 = partition status
+ 1 = starting head
+ 2 = starting sector and cylinder (word, encoded)
+ 4 = partition type
+ 5 = ending head
+ 6 = ending sector and cylinder (word, encoded)
+ 8 = starting absolute sector (double word)
+ c = number of sectors (double word)
+ Signature: 0x1fe = 0x55aa
+
+ So, this algorithm assumes:
+ 1) the first partition table is in use,
+ 2) the data in the first entry is correct, and
+ 3) partitions never divide cylinders
+
+ Note that (1) may be FALSE for NetBSD (and other BSD flavors),
+ as well as for Linux. Note also, that Linux doesn't pay any
+ attention to the fields that are used by this algorithm -- it
+ only uses the absolute sector data. Recent versions of Linux's
+ fdisk(1) will fill this data in correctly, and forthcoming
+ versions will check for consistency.
+
+ Checking for a non-zero partition type is not part of the
+ Future Domain algorithm, but it seemed to be a reasonable thing
+ to do, especially in the Linux and BSD worlds. */
+
+ info_array[0] = p[5] + 1; /* heads */
+ info_array[1] = p[6] & 0x3f; /* sectors */
+ } else {
+
+ /* Note that this new method guarantees that there will always be
+ less than 1024 cylinders on a platter. This is good for drives
+ up to approximately 7.85GB (where 1GB = 1024 * 1024 kB). */
+
+ if ((unsigned int)size >= 0x7e0000U) {
+ info_array[0] = 0xff; /* heads = 255 */
+ info_array[1] = 0x3f; /* sectors = 63 */
+ } else if ((unsigned int)size >= 0x200000U) {
+ info_array[0] = 0x80; /* heads = 128 */
+ info_array[1] = 0x3f; /* sectors = 63 */
+ } else {
+ info_array[0] = 0x40; /* heads = 64 */
+ info_array[1] = 0x20; /* sectors = 32 */
+ }
+ }
+ /* For both methods, compute the cylinders */
+ info_array[2] = (unsigned int)size / (info_array[0] * info_array[1] );
+ kfree(p);
+ }
+
+ return 0;
+}
+
+static int fdomain_16x0_release(struct Scsi_Host *shpnt)
+{
+ if (shpnt->irq)
+ free_irq(shpnt->irq, shpnt);
+ if (shpnt->io_port && shpnt->n_io_port)
+ release_region(shpnt->io_port, shpnt->n_io_port);
+ if (PCI_bus)
+ pci_dev_put(PCI_dev);
+ return 0;
+}
+
+struct scsi_host_template fdomain_driver_template = {
+ .module = THIS_MODULE,
+ .name = "fdomain",
+ .proc_name = "fdomain",
+ .detect = fdomain_16x0_detect,
+ .info = fdomain_16x0_info,
+ .queuecommand = fdomain_16x0_queue,
+ .eh_abort_handler = fdomain_16x0_abort,
+ .eh_bus_reset_handler = fdomain_16x0_bus_reset,
+ .bios_param = fdomain_16x0_biosparam,
+ .release = fdomain_16x0_release,
+ .can_queue = 1,
+ .this_id = 6,
+ .sg_tablesize = 64,
+ .cmd_per_lun = 1,
+ .use_clustering = DISABLE_CLUSTERING,
+};
+
+#ifndef PCMCIA
+#ifdef CONFIG_PCI
+
+static struct pci_device_id fdomain_pci_tbl[] = {
+ { PCI_VENDOR_ID_FD, PCI_DEVICE_ID_FD_36C70,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
+ { }
+};
+MODULE_DEVICE_TABLE(pci, fdomain_pci_tbl);
+#endif
+#define driver_template fdomain_driver_template
+#include "scsi_module.c"
+
+#endif
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-13 10:40:27 +0000