fdomain.c
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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@redhat.com>
- * 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 then 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
- publically 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.
- DO_DETECT: This activates some old scan code which was needed before the
- high level drivers got fixed. If you are having trouble with the driver,
- turning this on should not hurt, and might help. Please let me know if
- this is the case, since this code will be removed from future drivers.
- 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>
- #ifdef PCMCIA
- #undef MODULE
- #endif
- #include <linux/init.h>
- #include <linux/sched.h>
- #include <asm/io.h>
- #include <linux/blk.h>
- #include "scsi.h"
- #include "hosts.h"
- #include "fdomain.h"
- #include <asm/system.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/config.h> /* for CONFIG_PCI */
-
- #define VERSION "$Revision: 5.50 $"
- /* START OF USER DEFINABLE OPTIONS */
- #define DEBUG 1 /* Enable debugging output */
- #define ENABLE_PARITY 1 /* Enable SCSI Parity */
- #define FIFO_COUNT 2 /* Number of 512 byte blocks before INTR */
- #define DO_DETECT 0 /* Do device detection here (see scsi.c) */
- /* 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
- };
- static int port_base = 0;
- static unsigned long bios_base = 0;
- static int bios_major = 0;
- static int bios_minor = 0;
- static int PCI_bus = 0;
- static int Quantum = 0; /* Quantum board variant */
- static int interrupt_level = 0;
- static volatile int in_command = 0;
- static Scsi_Cmnd *current_SC = NULL;
- static enum chip_type chip = unknown;
- static int adapter_mask = 0;
- static int this_id = 0;
- static int setup_called = 0;
- #if DEBUG_RACE
- static volatile int in_interrupt_flag = 0;
- #endif
- static int SCSI_Mode_Cntl_port;
- static int FIFO_Data_Count_port;
- static int Interrupt_Cntl_port;
- static int Interrupt_Status_port;
- static int Read_FIFO_port;
- static int Read_SCSI_Data_port;
- static int SCSI_Cntl_port;
- static int SCSI_Data_NoACK_port;
- static int SCSI_Status_port;
- static int TMC_Cntl_port;
- static int TMC_Status_port;
- static int Write_FIFO_port;
- static int Write_SCSI_Data_port;
- static int FIFO_Size = 0x2000; /* 8k FIFO for
- pre-tmc18c30 chips */
- extern void do_fdomain_16x0_intr( int irq, void *dev_id,
- struct pt_regs * regs );
- #ifdef MODULE
- /* Allow insmod parameters to be like LILO
- parameters. For example:
- insmod fdomain fdomain=0x140,11
- */
- static char * fdomain = NULL;
- MODULE_PARM(fdomain, "s");
- #endif
- static unsigned long addresses[] = {
- 0xc8000,
- 0xca000,
- 0xce000,
- 0xde000,
- 0xcc000, /* Extra addresses for PCI boards */
- 0xd0000,
- 0xe0000,
- };
- #define ADDRESS_COUNT (sizeof( addresses ) / sizeof( unsigned ))
-
- static unsigned short ports[] = { 0x140, 0x150, 0x160, 0x170 };
- #define PORT_COUNT (sizeof( ports ) / sizeof( unsigned short ))
- static unsigned short ints[] = { 3, 5, 10, 11, 12, 14, 15, 0 };
- /*
- 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.)
- */
- 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 (sizeof( signatures ) / sizeof( struct signature ))
- static void print_banner( struct Scsi_Host *shpnt )
- {
- if (!shpnt) return; /* This won't ever happen */
- if (bios_major < 0 && bios_minor < 0) {
- printk( "scsi%d: <fdomain> No BIOS; using scsi id %dn",
- shpnt->host_no, shpnt->this_id );
- } else {
- printk( "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 %dn",
- 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( "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" );
- }
- static int __init 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( "scsi: <fdomain>"
- " Usage: fdomain=<PORT_BASE>,<IRQ>[,<ADAPTER_ID>]n" );
- printk( "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);
- }
- inline static void fdomain_make_bus_idle( void )
- {
- outb( 0, SCSI_Cntl_port );
- outb( 0, SCSI_Mode_Cntl_port );
- if (chip == tmc18c50 || chip == tmc18c30)
- outb( 0x21 | PARITY_MASK, TMC_Cntl_port ); /* Clear forced intr. */
- else
- outb( 0x01 | PARITY_MASK, TMC_Cntl_port );
- }
- 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;
- }
- /* 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 = %xn", 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; !bios_base && i < ADDRESS_COUNT; i++) {
- #if DEBUG_DETECT
- printk( " %lx(%lx),", addresses[i], bios_base );
- #endif
- for (j = 0; !bios_base && j < SIGNATURE_COUNT; j++) {
- if (isa_check_signature(addresses[i] + 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];
- }
- }
- }
-
- 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 = isa_readb(bios_base + 0x1fa2) + (isa_readb(bios_base + 0x1fa3) << 8);
- break;
- case 4: /* ISA_200S (another one) */
- base = isa_readb(bios_base + 0x1fa3) + (isa_readb(bios_base + 0x1fa4) << 8);
- break;
- default:
- base = isa_readb(bios_base + 0x1fcc) + (isa_readb(bios_base + 0x1fcd) << 8);
- break;
- }
-
- #if DEBUG_DETECT
- printk( " %x,", base );
- #endif
- for (flag = 0, i = 0; !flag && i < PORT_COUNT; i++) {
- if (base == ports[i])
- ++flag;
- }
- if (flag && fdomain_is_valid_port( base )) {
- *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 (check_region( base, 0x10 )) {
- #if DEBUG_DETECT
- printk( " (%x inuse),", base );
- #endif
- continue;
- }
- #if DEBUG_DETECT
- printk( " %x,", base );
- #endif
- if ((flag = fdomain_is_valid_port( base ))) break;
- }
- #if DEBUG_DETECT
- if (flag) printk( " SUCCESSn" );
- else printk( " FAILUREn" );
- #endif
- if (!flag) return 0; /* iobase not found */
- *irq = fdomain_get_irq( base );
- *iobase = base;
- return 1; /* success */
- }
- /* 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 (!pci_present()) return 0;
- #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 devicesn" );
- printk( "scsi: <fdomain> TMC-3260 detect:"
- " Using Vendor ID: 0x%x and Device ID: 0x%xn",
- PCI_VENDOR_ID_FD,
- PCI_DEVICE_ID_FD_36C70 );
- #endif
- if ((pdev = pci_find_device(PCI_VENDOR_ID_FD,
- PCI_DEVICE_ID_FD_36C70,
- pdev)) == NULL)
- return 0;
- if (pci_enable_device(pdev)) return 0;
-
- #if DEBUG_DETECT
- printk( "scsi: <fdomain> TMC-3260 detect:"
- " PCI bus %u, device %u, function %un",
- 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;
- /* 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( *iobase )) {
- printk( "scsi: <fdomain>"
- " PCI card detected, but driver not loaded (invalid port)n" );
- return 0;
- }
- /* Fill in a few global variables. Ugh. */
- bios_major = bios_minor = -1;
- PCI_bus = 1;
- Quantum = 0;
- bios_base = 0;
-
- return 1;
- }
- #endif
- int fdomain_16x0_detect( Scsi_Host_Template *tpnt )
- {
- int retcode;
- struct Scsi_Host *shpnt;
- struct pci_dev *pdev = NULL;
- #if DO_DETECT
- int i = 0;
- int j = 0;
- const int buflen = 255;
- Scsi_Cmnd SCinit;
- unsigned char do_inquiry[] = { INQUIRY, 0, 0, 0, buflen, 0 };
- unsigned char do_request_sense[] = { REQUEST_SENSE, 0, 0, 0, buflen, 0 };
- unsigned char do_read_capacity[] = { READ_CAPACITY,
- 0, 0, 0, 0, 0, 0, 0, 0, 0 };
- unsigned char buf[buflen];
- #endif
- tpnt->proc_name = "fdomain";
- #ifdef MODULE
- if (fdomain)
- fdomain_setup(fdomain);
- #endif
-
- if (setup_called) {
- #if DEBUG_DETECT
- printk( "scsi: <fdomain> No BIOS, using port_base = 0x%x, irq = %dn",
- port_base, interrupt_level );
- #endif
- if (!fdomain_is_valid_port( port_base )) {
- printk( "scsi: <fdomain> Cannot locate chip at port base 0x%xn",
- port_base );
- printk( "scsi: <fdomain> Bad LILO/INSMOD parameters?n" );
- return 0;
- }
- } 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 0;
- }
- }
- }
- SCSI_Mode_Cntl_port = port_base + SCSI_Mode_Cntl;
- FIFO_Data_Count_port = port_base + FIFO_Data_Count;
- Interrupt_Cntl_port = port_base + Interrupt_Cntl;
- Interrupt_Status_port = port_base + Interrupt_Status;
- Read_FIFO_port = port_base + Read_FIFO;
- Read_SCSI_Data_port = port_base + Read_SCSI_Data;
- SCSI_Cntl_port = port_base + SCSI_Cntl;
- SCSI_Data_NoACK_port = port_base + SCSI_Data_NoACK;
- SCSI_Status_port = port_base + SCSI_Status;
- TMC_Cntl_port = port_base + TMC_Cntl;
- TMC_Status_port = port_base + TMC_Status;
- Write_FIFO_port = port_base + Write_FIFO;
- Write_SCSI_Data_port = port_base + Write_SCSI_Data;
- fdomain_16x0_reset( NULL, 0 );
- if (fdomain_test_loopback()) {
- printk( "scsi: <fdomain> Detection failed"
- " (loopback test failed at port base 0x%x)n", port_base );
- if (setup_called) {
- printk( "scsi: <fdomain> Bad LILO/INSMOD parameters?n" );
- }
- return 0;
- }
- 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)
- return 0;
- shpnt->irq = interrupt_level;
- shpnt->io_port = port_base;
- scsi_set_pci_device(shpnt, pdev);
- shpnt->n_io_port = 0x10;
- print_banner( shpnt );
- /* Log IRQ with kernel */
- if (!interrupt_level) {
- printk( "scsi: <fdomain>"
- " Card Detected, but driver not loaded (no IRQ)n" );
- return 0;
- } else {
- /* Register the IRQ with the kernel */
- retcode = request_irq( interrupt_level,
- do_fdomain_16x0_intr, pdev?SA_SHIRQ:0, "fdomain", shpnt);
- if (retcode < 0) {
- if (retcode == -EINVAL) {
- printk( "scsi: <fdomain> IRQ %d is bad!n", interrupt_level );
- printk( " This shouldn't happen!n" );
- printk( " Send mail to faith@acm.orgn" );
- } else if (retcode == -EBUSY) {
- printk( "scsi: <fdomain> IRQ %d is already in use!n",
- interrupt_level );
- printk( " Please use another IRQ!n" );
- } else {
- printk( "scsi: <fdomain> Error getting IRQ %dn",
- interrupt_level );
- printk( " This shouldn't happen!n" );
- printk( " Send mail to faith@acm.orgn" );
- }
- printk( "scsi: <fdomain> Detected, but driver not loaded (IRQ)n" );
- return 0;
- }
- }
- /* Log I/O ports with kernel */
- request_region( port_base, 0x10, "fdomain" );
- #if DO_DETECT
- /* These routines are here because of the way the SCSI bus behaves after
- a reset. This appropriate behavior was not handled correctly by the
- higher level SCSI routines when I first wrote this driver. Now,
- however, correct scan routines are part of scsi.c and these routines
- are no longer needed. However, this code is still good for
- debugging. */
- SCinit.request_buffer = SCinit.buffer = buf;
- SCinit.request_bufflen = SCinit.bufflen = sizeof(buf)-1;
- SCinit.use_sg = 0;
- SCinit.lun = 0;
- printk( "scsi: <fdomain> detection routine scanning for devices:n" );
- for (i = 0; i < 8; i++) {
- SCinit.target = i;
- if (i == tpnt->this_id) /* Skip host adapter */
- continue;
- memcpy(SCinit.cmnd, do_request_sense, sizeof(do_request_sense));
- retcode = fdomain_16x0_command(&SCinit);
- if (!retcode) {
- memcpy(SCinit.cmnd, do_inquiry, sizeof(do_inquiry));
- retcode = fdomain_16x0_command(&SCinit);
- if (!retcode) {
- printk( " SCSI ID %d: ", i );
- for (j = 8; j < (buf[4] < 32 ? buf[4] : 32); j++)
- printk( "%c", buf[j] >= 20 ? buf[j] : ' ' );
- memcpy(SCinit.cmnd, do_read_capacity, sizeof(do_read_capacity));
- retcode = fdomain_16x0_command(&SCinit);
- if (!retcode) {
- unsigned long blocks, size, capacity;
-
- blocks = (buf[0] << 24) | (buf[1] << 16)
- | (buf[2] << 8) | buf[3];
- size = (buf[4] << 24) | (buf[5] << 16) | (buf[6] << 8) | buf[7];
- capacity = +( +(blocks / 1024L) * +(size * 10L)) / 1024L;
-
- printk( "%lu MB (%lu byte blocks)",
- ((capacity + 5L) / 10L), size );
- } else {
- memcpy(SCinit.cmnd, do_request_sense, sizeof(do_request_sense));
- retcode = fdomain_16x0_command(&SCinit);
- }
- printk ("n" );
- } else {
- memcpy(SCinit.cmnd, do_request_sense, sizeof(do_request_sense));
- retcode = fdomain_16x0_command(&SCinit);
- }
- }
- }
- #endif
- return 1; /* Maximum of one adapter will be detected. */
- }
- 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 = ' ';
- } else { /* Assume VERSION is a number */
- strcat( buffer, " " VERSION );
- }
-
- return buffer;
- }
- /* First pass at /proc information routine. */
- /*
- * inout : decides on the direction of the dataflow and the meaning of the
- * variables
- * buffer: If inout==FALSE data is being written to it else read from it
- * *start: If inout==FALSE start of the valid data in the buffer
- * offset: If inout==FALSE offset from the beginning of the imaginary file
- * from which we start writing into the buffer
- * length: If inout==FALSE max number of bytes to be written into the buffer
- * else number of bytes in the buffer
- */
- int fdomain_16x0_proc_info( char *buffer, char **start, off_t offset,
- int length, int hostno, int inout )
- {
- const char *info = fdomain_16x0_info( NULL );
- int len;
- int pos;
- int begin;
- if (inout) return(-ENOSYS);
-
- begin = 0;
- strcpy( buffer, info );
- strcat( buffer, "n" );
- pos = len = strlen( buffer );
- if(pos < offset) {
- len = 0;
- begin = pos;
- }
-
- *start = buffer + (offset - begin); /* Start of wanted data */
- len -= (offset - begin);
- if(len > length) len = length;
-
- return(len);
- }
-
- #if 0
- static int fdomain_arbitrate( void )
- {
- int status = 0;
- unsigned long timeout;
- #if EVERY_ACCESS
- printk( "fdomain_arbitrate()n" );
- #endif
-
- outb( 0x00, SCSI_Cntl_port ); /* Disable data drivers */
- outb( adapter_mask, port_base + SCSI_Data_NoACK ); /* Set our id bit */
- outb( 0x04 | PARITY_MASK, TMC_Cntl_port ); /* Start arbitration */
- timeout = 500;
- do {
- status = inb( TMC_Status_port ); /* 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 = %xn", status );
- #endif
- #if ERRORS_ONLY
- printk( "scsi: <fdomain> Arbitration failed, status = %xn", status );
- #endif
- return 1;
- }
- #endif
- static int fdomain_select( int target )
- {
- int status;
- unsigned long timeout;
- static int flag = 0;
- outb( 0x82, SCSI_Cntl_port ); /* Bus Enable + Select */
- outb( adapter_mask | (1 << target), SCSI_Data_NoACK_port );
- /* Stop arbitration and enable parity */
- outb( PARITY_MASK, TMC_Cntl_port );
- timeout = 350; /* 350 msec */
- do {
- status = inb( SCSI_Status_port ); /* Read adapter status */
- if (status & 1) { /* Busy asserted */
- /* Enable SCSI Bus (on error, should make bus idle with 0) */
- outb( 0x80, SCSI_Cntl_port );
- return 0;
- }
- mdelay(1); /* wait one msec */
- } while (--timeout);
- /* Make bus idle */
- fdomain_make_bus_idle();
- #if EVERY_ACCESS
- if (!target) printk( "Selection failedn" );
- #endif
- #if ERRORS_ONLY
- if (!target) {
- if (!flag) /* Skip first failure for all chips. */
- ++flag;
- else
- printk( "scsi: <fdomain> Selection failedn" );
- }
- #endif
- return 1;
- }
- void my_done( int error )
- {
- if (in_command) {
- in_command = 0;
- outb( 0x00, Interrupt_Cntl_port );
- 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 commandn" );
- }
- #if DEBUG_RACE
- in_interrupt_flag = 0;
- #endif
- }
- void do_fdomain_16x0_intr( int irq, void *dev_id, struct pt_regs * regs )
- {
- 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(TMC_Status_port)&0x01)==0)
- return;
- /* It is our IRQ */
- outb( 0x00, Interrupt_Cntl_port );
- /* 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 = %xn",
- in_command, current_SC );
- #endif
- return;
- }
- /* Abort calls my_done, so we do nothing here. */
- if (current_SC->SCp.phase & aborted) {
- #if DEBUG_ABORT
- printk( "scsi: <fdomain> Interrupt after abort, ignoringn" );
- #endif
- /*
- return; */
- }
- #if DEBUG_RACE
- ++in_interrupt_flag;
- #endif
- if (current_SC->SCp.phase & in_arbitration) {
- status = inb( TMC_Status_port ); /* Read adapter status */
- if (!(status & 0x02)) {
- #if EVERY_ACCESS
- printk( " AFAIL " );
- #endif
- spin_lock_irqsave(&io_request_lock, flags);
- my_done( DID_BUS_BUSY << 16 );
- spin_unlock_irqrestore(&io_request_lock, flags);
- return;
- }
- current_SC->SCp.phase = in_selection;
-
- outb( 0x40 | FIFO_COUNT, Interrupt_Cntl_port );
- outb( 0x82, SCSI_Cntl_port ); /* Bus Enable + Select */
- outb( adapter_mask | (1 << current_SC->target), SCSI_Data_NoACK_port );
-
- /* Stop arbitration and enable parity */
- outb( 0x10 | PARITY_MASK, TMC_Cntl_port );
- #if DEBUG_RACE
- in_interrupt_flag = 0;
- #endif
- return;
- } else if (current_SC->SCp.phase & in_selection) {
- status = inb( SCSI_Status_port );
- if (!(status & 0x01)) {
- /* Try again, for slow devices */
- if (fdomain_select( current_SC->target )) {
- #if EVERY_ACCESS
- printk( " SFAIL " );
- #endif
- spin_lock_irqsave(&io_request_lock, flags);
- my_done( DID_NO_CONNECT << 16 );
- spin_unlock_irqrestore(&io_request_lock, flags);
- return;
- } else {
- #if EVERY_ACCESS
- printk( " AltSel " );
- #endif
- /* Stop arbitration and enable parity */
- outb( 0x10 | PARITY_MASK, TMC_Cntl_port );
- }
- }
- current_SC->SCp.phase = in_other;
- outb( 0x90 | FIFO_COUNT, Interrupt_Cntl_port );
- outb( 0x80, SCSI_Cntl_port );
- #if DEBUG_RACE
- in_interrupt_flag = 0;
- #endif
- return;
- }
-
- /* current_SC->SCp.phase == in_other: this is the body of the routine */
-
- status = inb( SCSI_Status_port );
-
- if (status & 0x10) { /* REQ */
-
- switch (status & 0x0e) {
-
- case 0x08: /* COMMAND OUT */
- outb( current_SC->cmnd[current_SC->SCp.sent_command++],
- Write_SCSI_Data_port );
- #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, TMC_Cntl_port );
- }
- 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, TMC_Cntl_port );
- }
- break;
- case 0x0c: /* STATUS IN */
- current_SC->SCp.Status = inb( Read_SCSI_Data_port );
- #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 = %xn",
- current_SC->target,
- current_SC->cmnd[0],
- current_SC->SCp.Status );
- }
- #endif
- break;
- case 0x0a: /* MESSAGE OUT */
- outb( MESSAGE_REJECT, Write_SCSI_Data_port ); /* Reject */
- break;
- case 0x0e: /* MESSAGE IN */
- current_SC->SCp.Message = inb( Read_SCSI_Data_port );
- #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 = %xn",
- current_SC->SCp.Message );
- }
- #endif
- break;
- }
- }
- if (chip == tmc1800
- && !current_SC->SCp.have_data_in
- && (current_SC->SCp.sent_command
- >= current_SC->cmd_len)) {
- /* We have to get the FIFO direction
- correct, so I've made a table based
- on the SCSI Standard of which commands
- appear to require a DATA OUT phase.
- */
- /*
- p. 94: Command for all device types
- CHANGE DEFINITION 40 DATA OUT
- COMPARE 39 DATA OUT
- COPY 18 DATA OUT
- COPY AND VERIFY 3a DATA OUT
- INQUIRY 12
- LOG SELECT 4c DATA OUT
- LOG SENSE 4d
- MODE SELECT (6) 15 DATA OUT
- MODE SELECT (10) 55 DATA OUT
- MODE SENSE (6) 1a
- MODE SENSE (10) 5a
- READ BUFFER 3c
- RECEIVE DIAGNOSTIC RESULTS 1c
- REQUEST SENSE 03
- SEND DIAGNOSTIC 1d DATA OUT
- TEST UNIT READY 00
- WRITE BUFFER 3b DATA OUT
- p.178: Commands for direct-access devices (not listed on p. 94)
- FORMAT UNIT 04 DATA OUT
- LOCK-UNLOCK CACHE 36
- PRE-FETCH 34
- PREVENT-ALLOW MEDIUM REMOVAL 1e
- READ (6)/RECEIVE 08
- READ (10) 3c
- READ CAPACITY 25
- READ DEFECT DATA (10) 37
- READ LONG 3e
- REASSIGN BLOCKS 07 DATA OUT
- RELEASE 17
- RESERVE 16 DATA OUT
- REZERO UNIT/REWIND 01
- SEARCH DATA EQUAL (10) 31 DATA OUT
- SEARCH DATA HIGH (10) 30 DATA OUT
- SEARCH DATA LOW (10) 32 DATA OUT
- SEEK (6) 0b
- SEEK (10) 2b
- SET LIMITS (10) 33
- START STOP UNIT 1b
- SYNCHRONIZE CACHE 35
- VERIFY (10) 2f
- WRITE (6)/PRINT/SEND 0a DATA OUT
- WRITE (10)/SEND 2a DATA OUT
- WRITE AND VERIFY (10) 2e DATA OUT
- WRITE LONG 3f DATA OUT
- WRITE SAME 41 DATA OUT ?
- p. 261: Commands for sequential-access devices (not previously listed)
- ERASE 19
- LOAD UNLOAD 1b
- LOCATE 2b
- READ BLOCK LIMITS 05
- READ POSITION 34
- READ REVERSE 0f
- RECOVER BUFFERED DATA 14
- SPACE 11
- WRITE FILEMARKS 10 ?
- p. 298: Commands for printer devices (not previously listed)
- ****** NOT SUPPORTED BY THIS DRIVER, since 0b is SEEK (6) *****
- SLEW AND PRINT 0b DATA OUT -- same as seek
- STOP PRINT 1b
- SYNCHRONIZE BUFFER 10
- p. 315: Commands for processor devices (not previously listed)
-
- p. 321: Commands for write-once devices (not previously listed)
- MEDIUM SCAN 38
- READ (12) a8
- SEARCH DATA EQUAL (12) b1 DATA OUT
- SEARCH DATA HIGH (12) b0 DATA OUT
- SEARCH DATA LOW (12) b2 DATA OUT
- SET LIMITS (12) b3
- VERIFY (12) af
- WRITE (12) aa DATA OUT
- WRITE AND VERIFY (12) ae DATA OUT
- p. 332: Commands for CD-ROM devices (not previously listed)
- PAUSE/RESUME 4b
- PLAY AUDIO (10) 45
- PLAY AUDIO (12) a5
- PLAY AUDIO MSF 47
- PLAY TRACK RELATIVE (10) 49
- PLAY TRACK RELATIVE (12) a9
- READ HEADER 44
- READ SUB-CHANNEL 42
- READ TOC 43
- p. 370: Commands for scanner devices (not previously listed)
- GET DATA BUFFER STATUS 34
- GET WINDOW 25
- OBJECT POSITION 31
- SCAN 1b
- SET WINDOW 24 DATA OUT
- p. 391: Commands for optical memory devices (not listed)
- ERASE (10) 2c
- ERASE (12) ac
- MEDIUM SCAN 38 DATA OUT
- READ DEFECT DATA (12) b7
- READ GENERATION 29
- READ UPDATED BLOCK 2d
- UPDATE BLOCK 3d DATA OUT
- p. 419: Commands for medium changer devices (not listed)
- EXCHANGE MEDIUM 46
- INITIALIZE ELEMENT STATUS 07
- MOVE MEDIUM a5
- POSITION TO ELEMENT 2b
- READ ELEMENT STATUS b8
- REQUEST VOL. ELEMENT ADDRESS b5
- SEND VOLUME TAG b6 DATA OUT
- p. 454: Commands for communications devices (not listed previously)
- GET MESSAGE (6) 08
- GET MESSAGE (10) 28
- GET MESSAGE (12) a8
- */
-
- switch (current_SC->cmnd[0]) {
- case CHANGE_DEFINITION: case COMPARE: case COPY:
- case COPY_VERIFY: case LOG_SELECT: case MODE_SELECT:
- case MODE_SELECT_10: case SEND_DIAGNOSTIC: case WRITE_BUFFER:
- case FORMAT_UNIT: case REASSIGN_BLOCKS: case RESERVE:
- case SEARCH_EQUAL: case SEARCH_HIGH: case SEARCH_LOW:
- case WRITE_6: case WRITE_10: case WRITE_VERIFY:
- case 0x3f: case 0x41:
- case 0xb1: case 0xb0: case 0xb2:
- case 0xaa: case 0xae:
- case 0x24:
- case 0x38: case 0x3d:
- case 0xb6:
-
- case 0xea: /* alternate number for WRITE LONG */
-
- current_SC->SCp.have_data_in = -1;
- outb( 0xd0 | PARITY_MASK, TMC_Cntl_port );
- break;
- case 0x00:
- default:
-
- current_SC->SCp.have_data_in = 1;
- outb( 0x90 | PARITY_MASK, TMC_Cntl_port );
- break;
- }
- }
- if (current_SC->SCp.have_data_in == -1) { /* DATA OUT */
- while ( (data_count = FIFO_Size - inw( FIFO_Data_Count_port )) > 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++, Write_FIFO_port );
- --current_SC->SCp.this_residual;
- } else {
- data_count >>= 1;
- outsw( Write_FIFO_port, 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 = current_SC->SCp.buffer->address;
- 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( FIFO_Data_Count_port )) > 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( Read_FIFO_port );
- --current_SC->SCp.this_residual;
- } else {
- data_count >>= 1; /* Number of words */
- insw( Read_FIFO_port, 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 = current_SC->SCp.buffer->address;
- 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) {
- if ((unsigned char)(*((char *)current_SC->request_buffer+2)) & 0x0f) {
- unsigned char key;
- unsigned char code;
- unsigned char qualifier;
- key = (unsigned char)(*((char *)current_SC->request_buffer + 2))
- & 0x0f;
- code = (unsigned char)(*((char *)current_SC->request_buffer + 12));
- qualifier = (unsigned char)(*((char *)current_SC->request_buffer
- + 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 = %xn",
- key, code, qualifier );
- }
- }
- #endif
- #if EVERY_ACCESS
- printk( "BEFORE MY_DONE. . ." );
- #endif
- spin_lock_irqsave(&io_request_lock, flags);
- my_done( (current_SC->SCp.Status & 0xff)
- | ((current_SC->SCp.Message & 0xff) << 8) | (DID_OK << 16) );
- spin_unlock_irqrestore(&io_request_lock, flags);
- #if EVERY_ACCESS
- printk( "RETURNING.n" );
- #endif
-
- } else {
- if (current_SC->SCp.phase & disconnect) {
- outb( 0xd0 | FIFO_COUNT, Interrupt_Cntl_port );
- outb( 0x00, SCSI_Cntl_port );
- } else {
- outb( 0x90 | FIFO_COUNT, Interrupt_Cntl_port );
- }
- }
- #if DEBUG_RACE
- in_interrupt_flag = 0;
- #endif
- return;
- }
- int fdomain_16x0_queue( Scsi_Cmnd * SCpnt, void (*done)(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 = %un",
- SCpnt->target,
- *(unsigned char *)SCpnt->cmnd,
- SCpnt->use_sg,
- SCpnt->request_bufflen );
- #endif
- fdomain_make_bus_idle();
- current_SC = SCpnt; /* Save this for the done function */
- current_SC->scsi_done = done;
- /* Initialize static data */
- if (current_SC->use_sg) {
- current_SC->SCp.buffer =
- (struct scatterlist *)current_SC->request_buffer;
- current_SC->SCp.ptr = current_SC->SCp.buffer->address;
- current_SC->SCp.this_residual = current_SC->SCp.buffer->length;
- current_SC->SCp.buffers_residual = current_SC->use_sg - 1;
- } else {
- current_SC->SCp.ptr = (char *)current_SC->request_buffer;
- current_SC->SCp.this_residual = current_SC->request_bufflen;
- 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, Interrupt_Cntl_port );
- outb( 0x00, SCSI_Cntl_port ); /* Disable data drivers */
- outb( adapter_mask, SCSI_Data_NoACK_port ); /* Set our id bit */
- ++in_command;
- outb( 0x20, Interrupt_Cntl_port );
- outb( 0x14 | PARITY_MASK, TMC_Cntl_port ); /* Start arbitration */
- return 0;
- }
- /* The following code, which simulates the old-style command function, was
- taken from Tommy Thorn's aha1542.c file. This code is Copyright (C)
- 1992 Tommy Thorn. */
- static volatile int internal_done_flag = 0;
- static volatile int internal_done_errcode = 0;
- static void internal_done( Scsi_Cmnd *SCpnt )
- {
- internal_done_errcode = SCpnt->result;
- ++internal_done_flag;
- }
- int fdomain_16x0_command( Scsi_Cmnd *SCpnt )
- {
- fdomain_16x0_queue( SCpnt, internal_done );
- while (!internal_done_flag)
- ;
- internal_done_flag = 0;
- return internal_done_errcode;
- }
- /* End of code derived from Tommy Thorn's work. */
- void print_info( Scsi_Cmnd *SCpnt )
- {
- unsigned int imr;
- unsigned int irr;
- unsigned int isr;
- if (!SCpnt || !SCpnt->host) {
- printk( "scsi: <fdomain> Cannot provide detailed informationn" );
- return;
- }
-
- printk( "%sn", fdomain_16x0_info( SCpnt->host ) );
- print_banner( SCpnt->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 = %un",
- SCpnt->SCp.phase,
- SCpnt->target,
- *(unsigned char *)SCpnt->cmnd,
- SCpnt->use_sg,
- SCpnt->request_bufflen );
- printk( "sent_command = %d, have_data_in = %d, timeout = %dn",
- SCpnt->SCp.sent_command,
- SCpnt->SCp.have_data_in,
- SCpnt->timeout );
- #if DEBUG_RACE
- printk( "in_interrupt_flag = %dn", 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%04xn", irr, isr );
- printk( "SCSI Status = 0x%02xn", inb( SCSI_Status_port ) );
- printk( "TMC Status = 0x%02x", inb( TMC_Status_port ) );
- if (inb( TMC_Status_port & 1))
- printk( " (interrupt)" );
- printk( "n" );
- printk( "Interrupt Status = 0x%02x", inb( Interrupt_Status_port ) );
- if (inb( Interrupt_Status_port ) & 0x08)
- printk( " (enabled)" );
- printk( "n" );
- if (chip == tmc18c50 || chip == tmc18c30) {
- printk( "FIFO Status = 0x%02xn", inb( port_base + FIFO_Status ) );
- printk( "Int. Condition = 0x%02xn",
- inb( port_base + Interrupt_Cond ) );
- }
- printk( "Configuration 1 = 0x%02xn", inb( port_base + Configuration1 ) );
- if (chip == tmc18c50 || chip == tmc18c30)
- printk( "Configuration 2 = 0x%02xn",
- inb( port_base + Configuration2 ) );
- }
- int fdomain_16x0_abort( Scsi_Cmnd *SCpnt)
- {
- unsigned long flags;
- #if EVERY_ACCESS || ERRORS_ONLY || DEBUG_ABORT
- printk( "scsi: <fdomain> abort " );
- #endif
- save_flags( flags );
- cli();
- if (!in_command) {
- #if EVERY_ACCESS || ERRORS_ONLY
- printk( " (not in command)n" );
- #endif
- restore_flags( flags );
- return SCSI_ABORT_NOT_RUNNING;
- } 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;
- restore_flags( flags );
-
- /* Aborts are not done well. . . */
- my_done( DID_ABORT << 16 );
- return SCSI_ABORT_SUCCESS;
- }
- int fdomain_16x0_reset( Scsi_Cmnd *SCpnt, unsigned int ignored )
- {
- #if DEBUG_RESET
- static int called_once = 0;
- #endif
- #if ERRORS_ONLY
- if (SCpnt) printk( "scsi: <fdomain> SCSI Bus Resetn" );
- #endif
- #if DEBUG_RESET
- if (called_once) print_info( current_SC );
- called_once = 1;
- #endif
-
- outb( 1, SCSI_Cntl_port );
- do_pause( 2 );
- outb( 0, SCSI_Cntl_port );
- do_pause( 115 );
- outb( 0, SCSI_Mode_Cntl_port );
- outb( PARITY_MASK, TMC_Cntl_port );
- /* Unless this is the very first call (i.e., SCPnt == NULL), everything
- is probably hosed at this point. We will, however, try to keep
- things going by informing the high-level code that we need help. */
- return SCSI_RESET_WAKEUP;
- }
- #include "sd.h"
- #include <scsi/scsi_ioctl.h>
- int fdomain_16x0_biosparam( Scsi_Disk *disk, kdev_t dev, int *info_array )
- {
- int drive;
- unsigned char buf[512 + sizeof (Scsi_Ioctl_Command)];
- Scsi_Ioctl_Command *sic = (Scsi_Ioctl_Command *) buf;
- int size = disk->capacity;
- unsigned char *data = sic->data;
- unsigned char do_read[] = { READ_6, 0, 0, 0, 1, 0 };
- int retcode;
- 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(dev) != SCSI_DISK0_MAJOR) {
- printk("scsi: <fdomain> fdomain_16x0_biosparam: too many disks");
- return 0;
- }
- drive = MINOR(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 = bios_base + 0x1f33 + drive * 25;
- break;
- case 3: /* ISA_250MG */
- offset = bios_base + 0x1f36 + drive * 15;
- break;
- case 4: /* ISA_200S (another one) */
- offset = bios_base + 0x1f34 + drive * 15;
- break;
- default:
- offset = bios_base + 0x1f31 + drive * 25;
- break;
- }
- isa_memcpy_fromio( &i, 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_base + 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!). */
- sic->inlen = 0; /* zero bytes out */
- sic->outlen = 512; /* one sector in */
- memcpy( data, do_read, sizeof( do_read ) );
- retcode = kernel_scsi_ioctl( disk->device,
- SCSI_IOCTL_SEND_COMMAND,
- sic );
- if (!retcode /* SCSI command ok */
- && data[511] == 0xaa && data[510] == 0x55 /* Partition table valid */
- && data[0x1c2]) { /* 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] = data[0x1c3] + 1; /* heads */
- info_array[1] = data[0x1c4] & 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] );
- }
-
- return 0;
- }
- 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);
- }
- MODULE_LICENSE("GPL");
- /* Eventually this will go into an include file, but this will be later */
- static Scsi_Host_Template driver_template = FDOMAIN_16X0;
- #include "scsi_module.c"