diff options
Diffstat (limited to 'drivers/scsi/fd_mcs.c')
| -rw-r--r-- | drivers/scsi/fd_mcs.c | 1354 |
1 files changed, 0 insertions, 1354 deletions
diff --git a/drivers/scsi/fd_mcs.c b/drivers/scsi/fd_mcs.c deleted file mode 100644 index 53bfcaa86f0..00000000000 --- a/drivers/scsi/fd_mcs.c +++ /dev/null @@ -1,1354 +0,0 @@ -/* fd_mcs.c -- Future Domain MCS 600/700 (or IBM OEM) driver - * - * FutureDomain MCS-600/700 v0.2 03/11/1998 by ZP Gu (zpg@castle.net) - * - * This driver is cloned from fdomain.* to specifically support - * the Future Domain MCS 600/700 MCA SCSI adapters. Some PS/2s - * also equipped with IBM Fast SCSI Adapter/A which is an OEM - * of MCS 700. - * - * This driver also supports Reply SB16/SCSI card (the SCSI part). - * - * What makes this driver different is that this driver is MCA only - * and it supports multiple adapters in the same system, IRQ - * sharing, some driver statistics, and maps highest SCSI id to sda. - * All cards are auto-detected. - * - * Assumptions: TMC-1800/18C50/18C30, BIOS >= 3.4 - * - * LILO command-line options: - * fd_mcs=<FIFO_COUNT>[,<FIFO_SIZE>] - * - * ******************************************************** - * Please see Copyrights/Comments in fdomain.* for credits. - * Following is from fdomain.c for acknowledgement: - * - * Created: Sun May 3 18:53:19 1992 by faith@cs.unc.edu - * Revised: Wed Oct 2 11:10:55 1996 by r.faith@ieee.org - * Author: Rickard E. Faith, faith@cs.unc.edu - * Copyright 1992, 1993, 1994, 1995, 1996 Rickard E. Faith - * - * $Id: fdomain.c,v 5.45 1996/10/02 15:13:06 root Exp $ - - * 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. - - ************************************************************************** - - 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. - [*****Now a runtime option*****] - - 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/errno.h> -#include <linux/string.h> -#include <linux/ioport.h> -#include <linux/proc_fs.h> -#include <linux/delay.h> -#include <linux/mca.h> -#include <linux/spinlock.h> -#include <linux/slab.h> -#include <scsi/scsicam.h> -#include <linux/mca-legacy.h> - -#include <asm/io.h> - -#include "scsi.h" -#include <scsi/scsi_host.h> - -#define DRIVER_VERSION "v0.2 by ZP Gu<zpg@castle.net>" - -/* START OF USER DEFINABLE OPTIONS */ - -#define DEBUG 0 /* Enable debugging output */ -#define ENABLE_PARITY 1 /* Enable SCSI Parity */ - -/* 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_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_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 -}; - -struct fd_hostdata { - unsigned long _bios_base; - int _bios_major; - int _bios_minor; - volatile int _in_command; - Scsi_Cmnd *_current_SC; - enum chip_type _chip; - int _adapter_mask; - int _fifo_count; /* Number of 512 byte blocks before INTR */ - - char _adapter_name[64]; -#if DEBUG_RACE - volatile int _in_interrupt_flag; -#endif - - int _SCSI_Mode_Cntl_port; - int _FIFO_Data_Count_port; - int _Interrupt_Cntl_port; - int _Interrupt_Status_port; - int _Interrupt_Cond_port; - int _Read_FIFO_port; - int _Read_SCSI_Data_port; - int _SCSI_Cntl_port; - int _SCSI_Data_NoACK_port; - int _SCSI_Status_port; - int _TMC_Cntl_port; - int _TMC_Status_port; - int _Write_FIFO_port; - int _Write_SCSI_Data_port; - - int _FIFO_Size; /* = 0x2000; 8k FIFO for - pre-tmc18c30 chips */ - /* simple stats */ - int _Bytes_Read; - int _Bytes_Written; - int _INTR_Processed; -}; - -#define FD_MAX_HOSTS 3 /* enough? */ - -#define HOSTDATA(shpnt) ((struct fd_hostdata *) shpnt->hostdata) -#define bios_base (HOSTDATA(shpnt)->_bios_base) -#define bios_major (HOSTDATA(shpnt)->_bios_major) -#define bios_minor (HOSTDATA(shpnt)->_bios_minor) -#define in_command (HOSTDATA(shpnt)->_in_command) -#define current_SC (HOSTDATA(shpnt)->_current_SC) -#define chip (HOSTDATA(shpnt)->_chip) -#define adapter_mask (HOSTDATA(shpnt)->_adapter_mask) -#define FIFO_COUNT (HOSTDATA(shpnt)->_fifo_count) -#define adapter_name (HOSTDATA(shpnt)->_adapter_name) -#if DEBUG_RACE -#define in_interrupt_flag (HOSTDATA(shpnt)->_in_interrupt_flag) -#endif -#define SCSI_Mode_Cntl_port (HOSTDATA(shpnt)->_SCSI_Mode_Cntl_port) -#define FIFO_Data_Count_port (HOSTDATA(shpnt)->_FIFO_Data_Count_port) -#define Interrupt_Cntl_port (HOSTDATA(shpnt)->_Interrupt_Cntl_port) -#define Interrupt_Status_port (HOSTDATA(shpnt)->_Interrupt_Status_port) -#define Interrupt_Cond_port (HOSTDATA(shpnt)->_Interrupt_Cond_port) -#define Read_FIFO_port (HOSTDATA(shpnt)->_Read_FIFO_port) -#define Read_SCSI_Data_port (HOSTDATA(shpnt)->_Read_SCSI_Data_port) -#define SCSI_Cntl_port (HOSTDATA(shpnt)->_SCSI_Cntl_port) -#define SCSI_Data_NoACK_port (HOSTDATA(shpnt)->_SCSI_Data_NoACK_port) -#define SCSI_Status_port (HOSTDATA(shpnt)->_SCSI_Status_port) -#define TMC_Cntl_port (HOSTDATA(shpnt)->_TMC_Cntl_port) -#define TMC_Status_port (HOSTDATA(shpnt)->_TMC_Status_port) -#define Write_FIFO_port (HOSTDATA(shpnt)->_Write_FIFO_port) -#define Write_SCSI_Data_port (HOSTDATA(shpnt)->_Write_SCSI_Data_port) -#define FIFO_Size (HOSTDATA(shpnt)->_FIFO_Size) -#define Bytes_Read (HOSTDATA(shpnt)->_Bytes_Read) -#define Bytes_Written (HOSTDATA(shpnt)->_Bytes_Written) -#define INTR_Processed (HOSTDATA(shpnt)->_INTR_Processed) - -struct fd_mcs_adapters_struct { - char *name; - int id; - enum chip_type fd_chip; - int fifo_size; - int fifo_count; -}; - -#define REPLY_ID 0x5137 - -static struct fd_mcs_adapters_struct fd_mcs_adapters[] = { - {"Future Domain SCSI Adapter MCS-700(18C50)", - 0x60e9, - tmc18c50, - 0x2000, - 4}, - {"Future Domain SCSI Adapter MCS-600/700(TMC-1800)", - 0x6127, - tmc1800, - 0x2000, - 4}, - {"Reply Sound Blaster/SCSI Adapter", - REPLY_ID, - tmc18c30, - 0x800, - 2}, -}; - -#define FD_BRDS ARRAY_SIZE(fd_mcs_adapters) - -static irqreturn_t fd_mcs_intr(int irq, void *dev_id); - -static unsigned long addresses[] = { 0xc8000, 0xca000, 0xce000, 0xde000 }; -static unsigned short ports[] = { 0x140, 0x150, 0x160, 0x170 }; -static unsigned short interrupts[] = { 3, 5, 10, 11, 12, 14, 15, 0 }; - -/* host information */ -static int found = 0; -static struct Scsi_Host *hosts[FD_MAX_HOSTS + 1] = { NULL }; - -static int user_fifo_count = 0; -static int user_fifo_size = 0; - -#ifndef MODULE -static int __init fd_mcs_setup(char *str) -{ - static int done_setup = 0; - int ints[3]; - - get_options(str, 3, ints); - if (done_setup++ || ints[0] < 1 || ints[0] > 2 || ints[1] < 1 || ints[1] > 16) { - printk("fd_mcs: usage: fd_mcs=FIFO_COUNT, FIFO_SIZE\n"); - return 0; - } - - user_fifo_count = ints[0] >= 1 ? ints[1] : 0; - user_fifo_size = ints[0] >= 2 ? ints[2] : 0; - return 1; -} - -__setup("fd_mcs=", fd_mcs_setup); -#endif /* !MODULE */ - -static void print_banner(struct Scsi_Host *shpnt) -{ - printk("scsi%d <fd_mcs>: ", shpnt->host_no); - - if (bios_base) { - printk("BIOS at 0x%lX", bios_base); - } else { - printk("No BIOS"); - } - - printk(", HostID %d, %s Chip, IRQ %d, IO 0x%lX\n", shpnt->this_id, chip == tmc18c50 ? "TMC-18C50" : (chip == tmc18c30 ? "TMC-18C30" : (chip == tmc1800 ? "TMC-1800" : "Unknown")), shpnt->irq, shpnt->io_port); -} - - -static void do_pause(unsigned amount) -{ /* Pause for amount*10 milliseconds */ - do { - mdelay(10); - } while (--amount); -} - -static void fd_mcs_make_bus_idle(struct Scsi_Host *shpnt) -{ - 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 fd_mcs_detect(struct scsi_host_template * tpnt) -{ - int loop; - struct Scsi_Host *shpnt; - - /* get id, port, bios, irq */ - int slot; - u_char pos2, pos3, pos4; - int id, port, irq; - unsigned long bios; - - /* if not MCA machine, return */ - if (!MCA_bus) - return 0; - - /* changeable? */ - id = 7; - - for (loop = 0; loop < FD_BRDS; loop++) { - slot = 0; - while (MCA_NOTFOUND != (slot = mca_find_adapter(fd_mcs_adapters[loop].id, slot))) { - - /* if we get this far, an adapter has been detected and is - enabled */ - - printk(KERN_INFO "scsi <fd_mcs>: %s at slot %d\n", fd_mcs_adapters[loop].name, slot + 1); - - pos2 = mca_read_stored_pos(slot, 2); - pos3 = mca_read_stored_pos(slot, 3); - pos4 = mca_read_stored_pos(slot, 4); - - /* ready for next probe */ - slot++; - - if (fd_mcs_adapters[loop].id == REPLY_ID) { /* reply card */ - static int reply_irq[] = { 10, 11, 14, 15 }; - - bios = 0; /* no bios */ - - if (pos2 & 0x2) - port = ports[pos4 & 0x3]; - else - continue; - - /* can't really disable it, same as irq=10 */ - irq = reply_irq[((pos4 >> 2) & 0x1) + 2 * ((pos4 >> 4) & 0x1)]; - } else { - bios = addresses[pos2 >> 6]; - port = ports[(pos2 >> 4) & 0x03]; - irq = interrupts[(pos2 >> 1) & 0x07]; - } - - if (irq) { - /* claim the slot */ - mca_set_adapter_name(slot - 1, fd_mcs_adapters[loop].name); - - /* check irq/region */ - if (request_irq(irq, fd_mcs_intr, IRQF_SHARED, "fd_mcs", hosts)) { - printk(KERN_ERR "fd_mcs: interrupt is not available, skipping...\n"); - continue; - } - - /* request I/O region */ - if (request_region(port, 0x10, "fd_mcs")) { - printk(KERN_ERR "fd_mcs: I/O region is already in use, skipping...\n"); - continue; - } - /* register */ - if (!(shpnt = scsi_register(tpnt, sizeof(struct fd_hostdata)))) { - printk(KERN_ERR "fd_mcs: scsi_register() failed\n"); - release_region(port, 0x10); - free_irq(irq, hosts); - continue; - } - - - /* save name */ - strcpy(adapter_name, fd_mcs_adapters[loop].name); - - /* chip/fifo */ - chip = fd_mcs_adapters[loop].fd_chip; - /* use boot time value if available */ - FIFO_COUNT = user_fifo_count ? user_fifo_count : fd_mcs_adapters[loop].fifo_count; - FIFO_Size = user_fifo_size ? user_fifo_size : fd_mcs_adapters[loop].fifo_size; - -/* FIXME: Do we need to keep this bit of code inside NOT_USED around at all? */ -#ifdef NOT_USED - /* *************************************************** */ - /* 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 */ - - printk("FIRST: chip=%s, fifo_size=0x%x\n", (chip == tmc18c30) ? "tmc18c30" : "tmc18c50", FIFO_Size); - } - } - - /* That should have worked, but appears to - have problems. Let's assume it is an - 18c30 if the RAM is disabled. */ - - if (inb(port + Configuration2) & 0x02) { - chip = tmc18c30; - FIFO_Size = 0x800; /* 2k FIFO */ - - printk("SECOND: chip=%s, fifo_size=0x%x\n", (chip == tmc18c30) ? "tmc18c30" : "tmc18c50", FIFO_Size); - } - /* *************************************************** */ -#endif - - /* IBM/ANSI scsi scan ordering */ - /* Stick this back in when the scsi.c changes are there */ - shpnt->reverse_ordering = 1; - - - /* saving info */ - hosts[found++] = shpnt; - - shpnt->this_id = id; - shpnt->irq = irq; - shpnt->io_port = port; - shpnt->n_io_port = 0x10; - - /* save */ - bios_base = bios; - adapter_mask = (1 << id); - - /* save more */ - SCSI_Mode_Cntl_port = port + SCSI_Mode_Cntl; - FIFO_Data_Count_port = port + FIFO_Data_Count; - Interrupt_Cntl_port = port + Interrupt_Cntl; - Interrupt_Status_port = port + Interrupt_Status; - Interrupt_Cond_port = port + Interrupt_Cond; - Read_FIFO_port = port + Read_FIFO; - Read_SCSI_Data_port = port + Read_SCSI_Data; - SCSI_Cntl_port = port + SCSI_Cntl; - SCSI_Data_NoACK_port = port + SCSI_Data_NoACK; - SCSI_Status_port = port + SCSI_Status; - TMC_Cntl_port = port + TMC_Cntl; - TMC_Status_port = port + TMC_Status; - Write_FIFO_port = port + Write_FIFO; - Write_SCSI_Data_port = port + Write_SCSI_Data; - - Bytes_Read = 0; - Bytes_Written = 0; - INTR_Processed = 0; - - /* say something */ - print_banner(shpnt); - - /* reset */ - 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); - /* done reset */ - } - } - - if (found == FD_MAX_HOSTS) { - printk("fd_mcs: detecting reached max=%d host adapters.\n", FD_MAX_HOSTS); - break; - } - } - - return found; -} - -static const char *fd_mcs_info(struct Scsi_Host *shpnt) -{ - return adapter_name; -} - -static int TOTAL_INTR = 0; - -/* - * 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 - */ -static int fd_mcs_proc_info(struct Scsi_Host *shpnt, char *buffer, char **start, off_t offset, int length, int inout) -{ - int len = 0; - - if (inout) - return (-ENOSYS); - - *start = buffer + offset; - - len += sprintf(buffer + len, "Future Domain MCS-600/700 Driver %s\n", DRIVER_VERSION); - len += sprintf(buffer + len, "HOST #%d: %s\n", shpnt->host_no, adapter_name); - len += sprintf(buffer + len, "FIFO Size=0x%x, FIFO Count=%d\n", FIFO_Size, FIFO_COUNT); - len += sprintf(buffer + len, "DriverCalls=%d, Interrupts=%d, BytesRead=%d, BytesWrite=%d\n\n", TOTAL_INTR, INTR_Processed, Bytes_Read, Bytes_Written); - - if ((len -= offset) <= 0) - return 0; - if (len > length) - len = length; - return len; -} - -static int fd_mcs_select(struct Scsi_Host *shpnt, int target) -{ - int status; - unsigned long timeout; - - 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; /* 350mS -- because of timeouts - (was 250mS) */ - - 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; - } - udelay(1000); /* wait one msec */ - } while (--timeout); - - /* Make bus idle */ - fd_mcs_make_bus_idle(shpnt); -#if EVERY_ACCESS - if (!target) - printk("Selection failed\n"); -#endif -#if ERRORS_ONLY - if (!target) { - static int flag = 0; - - if (!flag) /* Skip first failure for all chips. */ - ++flag; - else - printk("fd_mcs: Selection failed\n"); - } -#endif - return 1; -} - -static void my_done(struct Scsi_Host *shpnt, int error) -{ - if (in_command) { - in_command = 0; - outb(0x00, Interrupt_Cntl_port); - fd_mcs_make_bus_idle(shpnt); - current_SC->result = error; - current_SC->scsi_done(current_SC); - } else { - panic("fd_mcs: my_done() called outside of command\n"); - } -#if DEBUG_RACE - in_interrupt_flag = 0; -#endif -} - -/* only my_done needs to be protected */ -static irqreturn_t fd_mcs_intr(int irq, void *dev_id) -{ - unsigned long flags; - int status; - int done = 0; - unsigned data_count, tmp_count; - - int i = 0; - struct Scsi_Host *shpnt; - - TOTAL_INTR++; - - /* search for one adapter-response on shared interrupt */ - while ((shpnt = hosts[i++])) { - if ((inb(TMC_Status_port)) & 1) - break; - } - - /* return if some other device on this IRQ caused the interrupt */ - if (!shpnt) { - return IRQ_NONE; - } - - INTR_Processed++; - - outb(0x00, Interrupt_Cntl_port); - - /* Abort calls my_done, so we do nothing here. */ - if (current_SC->SCp.phase & aborted) { -#if DEBUG_ABORT - printk("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(TMC_Status_port); /* Read adapter status */ - if (!(status & 0x02)) { -#if EVERY_ACCESS - printk(" AFAIL "); -#endif - spin_lock_irqsave(shpnt->host_lock, flags); - my_done(shpnt, DID_BUS_BUSY << 16); - spin_unlock_irqrestore(shpnt->host_lock, flags); - return IRQ_HANDLED; - } - 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 << scmd_id(current_SC)), 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 IRQ_HANDLED; - } else if (current_SC->SCp.phase & in_selection) { - status = inb(SCSI_Status_port); - if (!(status & 0x01)) { - /* Try again, for slow devices */ - if (fd_mcs_select(shpnt, scmd_id(current_SC))) { -#if EVERY_ACCESS - printk(" SFAIL "); -#endif - spin_lock_irqsave(shpnt->host_lock, flags); - my_done(shpnt, DID_NO_CONNECT << 16); - spin_unlock_irqrestore(shpnt->host_lock, flags); - return IRQ_HANDLED; - } 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 IRQ_HANDLED; - } - - /* 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("ERROR fd_mcs: 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, 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("fd_mcs: 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)) { - /* 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) { - Bytes_Written++; - - outb(*current_SC->SCp.ptr++, Write_FIFO_port); - --current_SC->SCp.this_residual; - } else { - data_count >>= 1; - tmp_count = data_count << 1; - outsw(Write_FIFO_port, current_SC->SCp.ptr, data_count); - current_SC->SCp.ptr += tmp_count; - Bytes_Written += tmp_count; - current_SC->SCp.this_residual -= tmp_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; - } - } - } else 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) { - Bytes_Read++; - *current_SC->SCp.ptr++ = inb(Read_FIFO_port); - --current_SC->SCp.this_residual; - } else { - data_count >>= 1; /* Number of words */ - tmp_count = data_count << 1; - insw(Read_FIFO_port, current_SC->SCp.ptr, data_count); - current_SC->SCp.ptr += tmp_count; - Bytes_Read += tmp_count; - current_SC->SCp.this_residual -= tmp_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 EVERY_ACCESS - printk("BEFORE MY_DONE. . ."); -#endif - spin_lock_irqsave(shpnt->host_lock, flags); - my_done(shpnt, (current_SC->SCp.Status & 0xff) - | ((current_SC->SCp.Message & 0xff) << 8) | (DID_OK << 16)); - spin_unlock_irqrestore(shpnt->host_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 IRQ_HANDLED; -} - -static int fd_mcs_release(struct Scsi_Host *shpnt) -{ - int i, this_host, irq_usage; - - release_region(shpnt->io_port, shpnt->n_io_port); - - this_host = -1; - irq_usage = 0; - for (i = 0; i < found; i++) { - if (shpnt == hosts[i]) - this_host = i; - if (shpnt->irq == hosts[i]->irq) - irq_usage++; - } - - /* only for the last one */ - if (1 == irq_usage) - free_irq(shpnt->irq, hosts); - - found--; - - for (i = this_host; i < found; i++) - hosts[i] = hosts[i + 1]; - - hosts[found] = NULL; - - return 0; -} - -static int fd_mcs_queue_lck(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *)) -{ - struct Scsi_Host *shpnt = SCpnt->device->host; - - if (in_command) { - panic("fd_mcs: fd_mcs_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 - - fd_mcs_make_bus_idle(shpnt); - - SCpnt->scsi_done = done; /* Save this for the done function */ - current_SC = SCpnt; - - /* Initialize static data */ - - if (scsi_bufflen(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, Interrupt_Cntl_port); - outb(0x00, SCSI_Cntl_port); /* Disable data drivers */ - outb(adapter_mask, SCSI_Data_NoACK_port); /* Set our id bit */ - in_command = 1; - outb(0x20, Interrupt_Cntl_port); - outb(0x14 | PARITY_MASK, TMC_Cntl_port); /* Start arbitration */ - - return 0; -} - -static DEF_SCSI_QCMD(fd_mcs_queue) - -#if DEBUG_ABORT || DEBUG_RESET -static void fd_mcs_print_info(Scsi_Cmnd * SCpnt) -{ - unsigned int imr; - unsigned int irr; - unsigned int isr; - struct Scsi_Host *shpnt = SCpnt->host; - - if (!SCpnt || !SCpnt->host) { - printk("fd_mcs: cannot provide detailed information\n"); - } - - printk("%s\n", fd_mcs_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 = %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 << shpnt->irq)) - printk(" (masked)"); - printk(", IRR = 0x%04x, ISR = 0x%04x\n", irr, isr); - - printk("SCSI Status = 0x%02x\n", 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%02x\n", inb(shpnt->io_port + FIFO_Status)); - printk("Int. Condition = 0x%02x\n", inb(shpnt->io_port + Interrupt_Cond)); - } - printk("Configuration 1 = 0x%02x\n", inb(shpnt->io_port + Configuration1)); - if (chip == tmc18c50 || chip == tmc18c30) - printk("Configuration 2 = 0x%02x\n", inb(shpnt->io_port + Configuration2)); -} -#endif - -static int fd_mcs_abort(Scsi_Cmnd * SCpnt) -{ - struct Scsi_Host *shpnt = SCpnt->device->host; - - unsigned long flags; -#if EVERY_ACCESS || ERRORS_ONLY || DEBUG_ABORT - printk("fd_mcs: abort "); -#endif - - spin_lock_irqsave(shpnt->host_lock, flags); - if (!in_command) { -#if EVERY_ACCESS || ERRORS_ONLY - printk(" (not in command)\n"); -#endif - spin_unlock_irqrestore(shpnt->host_lock, flags); - return FAILED; - } else - printk("\n"); - -#if DEBUG_ABORT - fd_mcs_print_info(SCpnt); -#endif - - fd_mcs_make_bus_idle(shpnt); - - current_SC->SCp.phase |= aborted; - - current_SC->result = DID_ABORT << 16; - - /* Aborts are not done well. . . */ - my_done(shpnt, DID_ABORT << 16); - - spin_unlock_irqrestore(shpnt->host_lock, flags); - return SUCCESS; -} - -static int fd_mcs_bus_reset(Scsi_Cmnd * SCpnt) { - struct Scsi_Host *shpnt = SCpnt->device->host; - unsigned long flags; - -#if DEBUG_RESET - static int called_once = 0; -#endif - -#if ERRORS_ONLY - if (SCpnt) - printk("fd_mcs: SCSI Bus Reset\n"); -#endif - -#if DEBUG_RESET - if (called_once) - fd_mcs_print_info(current_SC); - called_once = 1; -#endif - - spin_lock_irqsave(shpnt->host_lock, flags); - - 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); - - spin_unlock_irqrestore(shpnt->host_lock, flags); - - /* 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 SUCCESS; -} - -#include <scsi/scsi_ioctl.h> - -static int fd_mcs_biosparam(struct scsi_device * disk, struct block_device *bdev, - sector_t capacity, int *info_array) -{ - unsigned char *p = scsi_bios_ptable(bdev); - int size = capacity; - - /* BIOS >= 3.4 for MCA cards */ - /* This algorithm was provided by Future Domain (much thanks!). */ - - 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 struct scsi_host_template driver_template = { - .proc_name = "fd_mcs", - .proc_info = fd_mcs_proc_info, - .detect = fd_mcs_detect, - .release = fd_mcs_release, - .info = fd_mcs_info, - .queuecommand = fd_mcs_queue, - .eh_abort_handler = fd_mcs_abort, - .eh_bus_reset_handler = fd_mcs_bus_reset, - .bios_param = fd_mcs_biosparam, - .can_queue = 1, - .this_id = 7, - .sg_tablesize = 64, - .cmd_per_lun = 1, - .use_clustering = DISABLE_CLUSTERING, -}; -#include "scsi_module.c" - -MODULE_LICENSE("GPL"); |