patch-2.4.17 linux/drivers/scsi/pas16.c
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- Lines: 808
- Date:
Fri Dec 21 16:40:32 2001
- Orig file:
linux-2.4.16/drivers/scsi/pas16.c
- Orig date:
Sun Sep 30 19:26:07 2001
diff -Naur -X /home/marcelo/lib/dontdiff linux-2.4.16/drivers/scsi/pas16.c linux/drivers/scsi/pas16.c
@@ -1,7 +1,7 @@
#define AUTOSENSE
#define PSEUDO_DMA
-#define FOO
-#define UNSAFE /* Not unsafe for PAS16 -- use it */
+#define BOARD_REQUIRES_NO_UDELAY /* PAS16 needs no I/O recovery delays */
+#define UNSAFE /* Not unsafe for PAS16 -- use it */
/*
* This driver adapted from Drew Eckhardt's Trantor T128 driver
@@ -52,8 +52,6 @@
*
* PARITY - enable parity checking. Not supported.
*
- * SCSI2 - enable support for SCSI-II tagged queueing. Untested.
- *
* UNSAFE - leave interrupts enabled during pseudo-DMA transfers. This
* parameter comes from the NCR5380 code. It is NOT unsafe with
* the PAS16 and you should use it. If you don't you will have
@@ -62,8 +60,6 @@
* want to use UNSAFE you can try defining LIMIT_TRANSFERSIZE or
* twiddle with the transfer size in the high level code.
*
- * USLEEP - enable support for devices that don't disconnect. Untested.
- *
* The card is detected and initialized in one of several ways :
* 1. Autoprobe (default) - There are many different models of
* the Pro Audio Spectrum/Studio 16, and I only have one of
@@ -109,7 +105,7 @@
*
* (IRQ_AUTO == 254, IRQ_NONE == 255 in NCR5380.h)
*/
-
+
#include <linux/module.h>
#include <asm/system.h>
@@ -133,467 +129,402 @@
static int pas_wmaxi = 0;
static unsigned short pas16_addr = 0;
static int pas16_irq = 0;
-
-int scsi_irq_translate[] =
- { 0, 0, 1, 2, 3, 4, 5, 6, 0, 0, 7, 8, 9, 0, 10, 11 };
+static int scsi_irq_translate[] = { 0, 0, 1, 2, 3, 4, 5, 6, 0, 0, 7, 8, 9, 0, 10, 11 };
/* The default_irqs array contains values used to set the irq into the
* board via software (as must be done on newer model boards without
* irq jumpers on the board). The first value in the array will be
* assigned to logical board 0, the next to board 1, etc.
*/
-int default_irqs[] __initdata =
- { PAS16_DEFAULT_BOARD_1_IRQ,
- PAS16_DEFAULT_BOARD_2_IRQ,
- PAS16_DEFAULT_BOARD_3_IRQ,
- PAS16_DEFAULT_BOARD_4_IRQ
- };
+
+static int default_irqs[] __initdata = {
+ PAS16_DEFAULT_BOARD_1_IRQ,
+ PAS16_DEFAULT_BOARD_2_IRQ,
+ PAS16_DEFAULT_BOARD_3_IRQ,
+ PAS16_DEFAULT_BOARD_4_IRQ
+};
static struct override {
- unsigned short io_port;
- int irq;
-} overrides
+ unsigned short io_port;
+ int irq;
+} overrides
#ifdef PAS16_OVERRIDE
- [] __initdata = PAS16_OVERRIDE;
+[] __initdata = PAS16_OVERRIDE;
#else
- [4] __initdata = {{0,IRQ_AUTO}, {0,IRQ_AUTO}, {0,IRQ_AUTO},
- {0,IRQ_AUTO}};
+[4] __initdata = {
+ {0, IRQ_AUTO},
+ {0, IRQ_AUTO},
+ {0, IRQ_AUTO},
+ {0, IRQ_AUTO}
+};
#endif
#define NO_OVERRIDES (sizeof(overrides) / sizeof(struct override))
static struct base {
- unsigned short io_port;
- int noauto;
-} bases[] __initdata =
- { {PAS16_DEFAULT_BASE_1, 0},
- {PAS16_DEFAULT_BASE_2, 0},
- {PAS16_DEFAULT_BASE_3, 0},
- {PAS16_DEFAULT_BASE_4, 0}
- };
+ unsigned short io_port;
+ int noauto;
+} bases[] __initdata = {
+ {PAS16_DEFAULT_BASE_1, 0},
+ {PAS16_DEFAULT_BASE_2, 0},
+ {PAS16_DEFAULT_BASE_3, 0},
+ {PAS16_DEFAULT_BASE_4, 0}
+};
#define NO_BASES (sizeof (bases) / sizeof (struct base))
-unsigned short pas16_offset[ 8 ] =
- {
- 0x1c00, /* OUTPUT_DATA_REG */
- 0x1c01, /* INITIATOR_COMMAND_REG */
- 0x1c02, /* MODE_REG */
- 0x1c03, /* TARGET_COMMAND_REG */
- 0x3c00, /* STATUS_REG ro, SELECT_ENABLE_REG wo */
- 0x3c01, /* BUS_AND_STATUS_REG ro, START_DMA_SEND_REG wo */
- 0x3c02, /* INPUT_DATA_REGISTER ro, (N/A on PAS16 ?)
- * START_DMA_TARGET_RECEIVE_REG wo
- */
- 0x3c03, /* RESET_PARITY_INTERRUPT_REG ro,
- * START_DMA_INITIATOR_RECEIVE_REG wo
- */
- };
+unsigned short pas16_offset[8] = {
+ 0x1c00, /* OUTPUT_DATA_REG */
+ 0x1c01, /* INITIATOR_COMMAND_REG */
+ 0x1c02, /* MODE_REG */
+ 0x1c03, /* TARGET_COMMAND_REG */
+ 0x3c00, /* STATUS_REG ro, SELECT_ENABLE_REG wo */
+ 0x3c01, /* BUS_AND_STATUS_REG ro, START_DMA_SEND_REG wo */
+ 0x3c02, /* INPUT_DATA_REGISTER ro, (N/A on PAS16 ?)
+ * START_DMA_TARGET_RECEIVE_REG wo
+ */
+ 0x3c03, /* RESET_PARITY_INTERRUPT_REG ro,
+ * START_DMA_INITIATOR_RECEIVE_REG wo
+ */
+};
/*----------------------------------------------------------------*/
-/* the following will set the monitor border color (useful to find
- where something crashed or gets stuck at */
-/* 1 = blue
- 2 = green
- 3 = cyan
- 4 = red
- 5 = magenta
- 6 = yellow
- 7 = white
-*/
-#if 1
-#define rtrc(i) {inb(0x3da); outb(0x31, 0x3c0); outb((i), 0x3c0);}
-#else
-#define rtrc(i) {}
-#endif
-
-/*
- * Function : enable_board( int board_num, unsigned short port )
- *
- * Purpose : set address in new model board
- *
- * Inputs : board_num - logical board number 0-3, port - base address
+/**
+ * enable_board - enable a pas16 board
+ * @board_num: logical board id
+ * @port: port to assign it
*
+ * Sets the address on new model PAS16 hardware
*/
-static void __init
- enable_board( int board_num, unsigned short port )
+static void __init enable_board(int board_num, unsigned short port)
{
- outb( 0xbc + board_num, MASTER_ADDRESS_PTR );
- outb( port >> 2, MASTER_ADDRESS_PTR );
+ outb(0xbc + board_num, MASTER_ADDRESS_PTR);
+ outb(port >> 2, MASTER_ADDRESS_PTR);
}
-
-
-/*
- * Function : init_board( unsigned short port, int irq )
- *
- * Purpose : Set the board up to handle the SCSI interface
- *
- * Inputs : port - base address of the board,
- * irq - irq to assign to the SCSI port
- * force_irq - set it even if it conflicts with sound driver
+/**
+ * init_board - set up board
+ * @port: board address
+ * @irq: interrupt line
+ * @force_irq: if true allow scsi/audio on the same int
*
+ * Set the board up to handle the SCSI interface
*/
-static void __init
- init_board( unsigned short io_port, int irq, int force_irq )
+static void __init init_board(unsigned short io_port, int irq, int force_irq)
{
- unsigned int tmp;
- unsigned int pas_irq_code;
+ unsigned int tmp;
+ unsigned int pas_irq_code;
/* Initialize the SCSI part of the board */
- outb( 0x30, io_port + P_TIMEOUT_COUNTER_REG ); /* Timeout counter */
- outb( 0x01, io_port + P_TIMEOUT_STATUS_REG_OFFSET ); /* Reset TC */
- outb( 0x01, io_port + WAIT_STATE ); /* 1 Wait state */
+ outb(0x30, io_port + P_TIMEOUT_COUNTER_REG); /* Timeout counter */
+ outb(0x01, io_port + P_TIMEOUT_STATUS_REG_OFFSET); /* Reset TC */
+ outb(0x01, io_port + WAIT_STATE); /* 1 Wait state */
- NCR5380_read( RESET_PARITY_INTERRUPT_REG );
+ NCR5380_read(RESET_PARITY_INTERRUPT_REG);
- /* Set the SCSI interrupt pointer without mucking up the sound
- * interrupt pointer in the same byte.
+ /*
+ * Set the SCSI interrupt pointer without mucking up the sound
+ * interrupt pointer in the same byte.
*/
- pas_irq_code = ( irq < 16 ) ? scsi_irq_translate[irq] : 0;
- tmp = inb( io_port + IO_CONFIG_3 );
-
- if( (( tmp & 0x0f ) == pas_irq_code) && pas_irq_code > 0
- && !force_irq )
- {
- printk( "pas16: WARNING: Can't use same irq as sound "
- "driver -- interrupts disabled\n" );
- /* Set up the drive parameters, disable 5380 interrupts */
- outb( 0x4d, io_port + SYS_CONFIG_4 );
- }
- else
- {
- tmp = ( tmp & 0x0f ) | ( pas_irq_code << 4 );
- outb( tmp, io_port + IO_CONFIG_3 );
+
+ pas_irq_code = (irq < 16) ? scsi_irq_translate[irq] : 0;
+ tmp = inb(io_port + IO_CONFIG_3);
+
+ if (((tmp & 0x0f) == pas_irq_code) && pas_irq_code > 0 && !force_irq) {
+ printk(KERN_WARNING "pas16: WARNING: Can't use same irq as sound " "driver -- interrupts disabled\n");
+ /* Set up the drive parameters, disable 5380 interrupts */
+ outb(0x4d, io_port + SYS_CONFIG_4);
+ } else {
+ tmp = (tmp & 0x0f) | (pas_irq_code << 4);
+ outb(tmp, io_port + IO_CONFIG_3);
- /* Set up the drive parameters and enable 5380 interrupts */
- outb( 0x6d, io_port + SYS_CONFIG_4 );
+ /* Set up the drive parameters and enable 5380 interrupts */
+ outb(0x6d, io_port + SYS_CONFIG_4);
}
}
-/*
- * Function : pas16_hw_detect( unsigned short board_num )
- *
- * Purpose : determine if a pas16 board is present
- *
- * Inputs : board_num - logical board number ( 0 - 3 )
+/**
+ * pas16_hw_detect - probe for hardware
+ * @board_num: logical board ID to probe for
*
- * Returns : 0 if board not found, 1 if found.
+ * Determine if a pas16 board is present
*/
-static int __init
- pas16_hw_detect( unsigned short board_num )
+static int __init pas16_hw_detect(unsigned short board_num)
{
- unsigned char board_rev, tmp;
- unsigned short io_port = bases[ board_num ].io_port;
+ unsigned char board_rev, tmp;
+ unsigned short io_port = bases[board_num].io_port;
- /* See if we can find a PAS16 board at the address associated
- * with this logical board number.
- */
-
- /* First, attempt to take a newer model board out of reset and
- * give it a base address. This shouldn't affect older boards.
- */
- enable_board( board_num, io_port );
+ /* See if we can find a PAS16 board at the address associated
+ * with this logical board number.
+ */
- /* Now see if it looks like a PAS16 board */
- board_rev = inb( io_port + PCB_CONFIG );
+ /* First, attempt to take a newer model board out of reset and
+ * give it a base address. This shouldn't affect older boards.
+ */
+ enable_board(board_num, io_port);
- if( board_rev == 0xff )
- return 0;
+ /* Now see if it looks like a PAS16 board */
+ board_rev = inb(io_port + PCB_CONFIG);
- tmp = board_rev ^ 0xe0;
+ if (board_rev == 0xff)
+ return 0;
- outb( tmp, io_port + PCB_CONFIG );
- tmp = inb( io_port + PCB_CONFIG );
- outb( board_rev, io_port + PCB_CONFIG );
+ tmp = board_rev ^ 0xe0;
- if( board_rev != tmp ) /* Not a PAS-16 */
- return 0;
+ outb(tmp, io_port + PCB_CONFIG);
+ tmp = inb(io_port + PCB_CONFIG);
+ outb(board_rev, io_port + PCB_CONFIG);
- if( ( inb( io_port + OPERATION_MODE_1 ) & 0x03 ) != 0x03 )
- return 0; /* return if no SCSI interface found */
+ if (board_rev != tmp) /* Not a PAS-16 */
+ return 0;
- /* Mediavision has some new model boards that return ID bits
- * that indicate a SCSI interface, but they're not (LMS). We'll
- * put in an additional test to try to weed them out.
- */
-
- outb( 0x01, io_port + WAIT_STATE ); /* 1 Wait state */
- NCR5380_write( MODE_REG, 0x20 ); /* Is it really SCSI? */
- if( NCR5380_read( MODE_REG ) != 0x20 ) /* Write to a reg. */
- return 0; /* and try to read */
- NCR5380_write( MODE_REG, 0x00 ); /* it back. */
- if( NCR5380_read( MODE_REG ) != 0x00 )
- return 0;
+ if ((inb(io_port + OPERATION_MODE_1) & 0x03) != 0x03)
+ return 0; /* return if no SCSI interface found */
- return 1;
-}
+ /* Mediavision has some new model boards that return ID bits
+ * that indicate a SCSI interface, but they're not (LMS). We'll
+ * put in an additional test to try to weed them out.
+ */
+ outb(0x01, io_port + WAIT_STATE); /* 1 Wait state */
+ NCR5380_write(MODE_REG, 0x20); /* Is it really SCSI? */
+ if (NCR5380_read(MODE_REG) != 0x20) /* Write to a reg. */
+ return 0; /* and try to read */
+ NCR5380_write(MODE_REG, 0x00); /* it back. */
+ if (NCR5380_read(MODE_REG) != 0x00)
+ return 0;
-/*
- * Function : pas16_setup(char *str, int *ints)
- *
- * Purpose : LILO command line initialization of the overrides array,
- *
- * Inputs : str - unused, ints - array of integer parameters with ints[0]
- * equal to the number of ints.
+ return 1;
+}
+
+/**
+ * pas16_setup - parse command line
+ * @str: command line block
*
+ * LILO command line initialization of the overrides array from
+ * the passed in pas16= options
*/
-void __init pas16_setup(char *str, int *ints)
+int __init pas16_setup(char *str, int *ints)
{
- static int commandline_current = 0;
- int i;
- if (ints[0] != 2)
- printk("pas16_setup : usage pas16=io_port,irq\n");
- else
- if (commandline_current < NO_OVERRIDES) {
- overrides[commandline_current].io_port = (unsigned short) ints[1];
- overrides[commandline_current].irq = ints[2];
- for (i = 0; i < NO_BASES; ++i)
- if (bases[i].io_port == (unsigned short) ints[1]) {
- bases[i].noauto = 1;
- break;
- }
- ++commandline_current;
+ static int commandline_current = 0;
+ int i;
+ int ints[10];
+
+ get_options(str, sizeof(ints) / sizeof(int), ints);
+ if (ints[0] != 2)
+ printk(KERN_ERR "pas16_setup : usage pas16=io_port,irq\n");
+ else if (commandline_current < NO_OVERRIDES) {
+ overrides[commandline_current].io_port = (unsigned short) ints[1];
+ overrides[commandline_current].irq = ints[2];
+ for (i = 0; i < NO_BASES; ++i)
+ if (bases[i].io_port == (unsigned short) ints[1]) {
+ bases[i].noauto = 1;
+ break;
+ }
+ ++commandline_current;
}
+ return 1;
}
-/*
- * Function : int pas16_detect(Scsi_Host_Template * tpnt)
- *
- * Purpose : detects and initializes PAS16 controllers
- * that were autoprobed, overridden on the LILO command line,
- * or specified at compile time.
- *
- * Inputs : tpnt - template for this SCSI adapter.
- *
- * Returns : 1 if a host adapter was found, 0 if not.
+__setup("pas16=", pas16_setup);
+
+/**
+ * pas16_detect - detect and configure a pas16
+ * @tpnt: template
*
+ * Detects and initializes PAS16 controllers that were autoprobed,
+ * overridden on the LILO command line, or specified at compile time.
*/
int __init pas16_detect(Scsi_Host_Template * tpnt)
{
- static int current_override = 0;
- static unsigned short current_base = 0;
- struct Scsi_Host *instance;
- unsigned short io_port;
- int count;
+ static int current_override = 0;
+ static unsigned short current_base = 0;
+ struct Scsi_Host *instance;
+ unsigned short io_port;
+ int count;
+
+ tpnt->proc_name = "pas16";
+ tpnt->proc_info = &pas16_proc_info;
+
+ if (pas16_addr != 0) {
+ overrides[0].io_port = pas16_addr;
+ /*
+ * This is how we avoid seeing more than
+ * one host adapter at the same I/O port.
+ * Cribbed shamelessly from pas16_setup().
+ */
+ for (count = 0; count < NO_BASES; ++count)
+ if (bases[count].io_port == pas16_addr) {
+ bases[count].noauto = 1;
+ break;
+ }
+ }
+ if (pas16_irq != 0)
+ overrides[0].irq = pas16_irq;
- tpnt->proc_name = "pas16";
- tpnt->proc_info = &pas16_proc_info;
+ for (count = 0; current_override < NO_OVERRIDES; ++current_override) {
+ io_port = 0;
- if (pas16_addr != 0) {
- overrides[0].io_port = pas16_addr;
- /*
- * This is how we avoid seeing more than
- * one host adapter at the same I/O port.
- * Cribbed shamelessly from pas16_setup().
- */
- for (count = 0; count < NO_BASES; ++count)
- if (bases[count].io_port == pas16_addr) {
- bases[count].noauto = 1;
- break;
- }
- }
- if (pas16_irq != 0)
- overrides[0].irq = pas16_irq;
-
- for (count = 0; current_override < NO_OVERRIDES; ++current_override) {
- io_port = 0;
-
- if (overrides[current_override].io_port)
- {
- io_port = overrides[current_override].io_port;
- enable_board( current_override, io_port );
- init_board( io_port, overrides[current_override].irq, 1 );
- }
- else
- for (; !io_port && (current_base < NO_BASES); ++current_base) {
-#if (PDEBUG & PDEBUG_INIT)
- printk("scsi-pas16 : probing io_port %04x\n", (unsigned int) bases[current_base].io_port);
-#endif
- if ( !bases[current_base].noauto &&
- pas16_hw_detect( current_base ) ){
- io_port = bases[current_base].io_port;
- init_board( io_port, default_irqs[ current_base ], 0 );
-#if (PDEBUG & PDEBUG_INIT)
- printk("scsi-pas16 : detected board.\n");
-#endif
+ if (overrides[current_override].io_port) {
+ io_port = overrides[current_override].io_port;
+ enable_board(current_override, io_port);
+ init_board(io_port, overrides[current_override].irq, 1);
+ }
+ else
+ {
+ for (; !io_port && (current_base < NO_BASES); ++current_base) {
+ if (!bases[current_base].noauto && pas16_hw_detect(current_base)) {
+ io_port = bases[current_base].io_port;
+ init_board(io_port, default_irqs[current_base], 0);
+ }
+ }
}
- }
+ if (!io_port)
+ break;
-#if defined(PDEBUG) && (PDEBUG & PDEBUG_INIT)
- printk("scsi-pas16 : io_port = %04x\n", (unsigned int) io_port);
-#endif
+ instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata));
+ if (instance == NULL)
+ break;
+
+ instance->io_port = io_port;
+
+ NCR5380_init(instance, 0);
+
+ if (overrides[current_override].irq != IRQ_AUTO)
+ instance->irq = overrides[current_override].irq;
+ else
+ instance->irq = NCR5380_probe_irq(instance, PAS16_IRQS);
+
+ if (instance->irq != IRQ_NONE)
+ if (request_irq(instance->irq, do_pas16_intr, SA_INTERRUPT, "pas16", NULL)) {
+ printk(KERN_WARNING "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq);
+ instance->irq = IRQ_NONE;
+ }
+
+ if (instance->irq == IRQ_NONE) {
+ printk(KERN_INFO "scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no);
+ printk(KERN_INFO "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no);
+ /* Disable 5380 interrupts, leave drive params the same */
+ outb(0x4d, io_port + SYS_CONFIG_4);
+ outb((inb(io_port + IO_CONFIG_3) & 0x0f), io_port + IO_CONFIG_3);
+ }
- if (!io_port)
- break;
+ printk(KERN_INFO "scsi%d : at 0x%04x", instance->host_no, (int)
+ instance->io_port);
+ if (instance->irq == IRQ_NONE)
+ printk(" interrupts disabled");
+ else
+ printk(" irq %d", instance->irq);
+ printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d", CAN_QUEUE, CMD_PER_LUN, PAS16_PUBLIC_RELEASE);
+ NCR5380_print_options(instance);
+ printk("\n");
- instance = scsi_register (tpnt, sizeof(struct NCR5380_hostdata));
- if(instance == NULL)
- break;
-
- instance->io_port = io_port;
-
- NCR5380_init(instance, 0);
-
- if (overrides[current_override].irq != IRQ_AUTO)
- instance->irq = overrides[current_override].irq;
- else
- instance->irq = NCR5380_probe_irq(instance, PAS16_IRQS);
-
- if (instance->irq != IRQ_NONE)
- if (request_irq(instance->irq, do_pas16_intr, SA_INTERRUPT, "pas16", NULL)) {
- printk("scsi%d : IRQ%d not free, interrupts disabled\n",
- instance->host_no, instance->irq);
- instance->irq = IRQ_NONE;
- }
-
- if (instance->irq == IRQ_NONE) {
- printk("scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no);
- printk("scsi%d : please jumper the board for a free IRQ.\n", instance->host_no);
- /* Disable 5380 interrupts, leave drive params the same */
- outb( 0x4d, io_port + SYS_CONFIG_4 );
- outb( (inb(io_port + IO_CONFIG_3) & 0x0f), io_port + IO_CONFIG_3 );
+ ++current_override;
+ ++count;
}
-
-#if defined(PDEBUG) && (PDEBUG & PDEBUG_INIT)
- printk("scsi%d : irq = %d\n", instance->host_no, instance->irq);
-#endif
-
- printk("scsi%d : at 0x%04x", instance->host_no, (int)
- instance->io_port);
- if (instance->irq == IRQ_NONE)
- printk (" interrupts disabled");
- else
- printk (" irq %d", instance->irq);
- printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d",
- CAN_QUEUE, CMD_PER_LUN, PAS16_PUBLIC_RELEASE);
- NCR5380_print_options(instance);
- printk("\n");
-
- ++current_override;
- ++count;
- }
- return count;
+ return count;
}
-/*
- * Function : int pas16_biosparam(Disk *disk, kdev_t dev, int *ip)
+/**
+ * pas16_biosparam - generate C/H/S data
+ * @disk: Disk to set up
+ * @dev: device ident of disk
+ * @ip: array to return C/H/S mapping
*
- * Purpose : Generates a BIOS / DOS compatible H-C-S mapping for
+ * Generates a BIOS / DOS compatible H-C-S mapping for
* the specified device / size.
- *
- * Inputs : size = size of device in sectors (512 bytes), dev = block device
- * major / minor, ip[] = {heads, sectors, cylinders}
- *
- * Returns : always 0 (success), initializes ip
- *
*/
-/*
- * XXX Most SCSI boards use this mapping, I could be incorrect. Some one
- * using hard disks on a trantor should verify that this mapping corresponds
- * to that used by the BIOS / ASPI driver by running the linux fdisk program
- * and matching the H_C_S coordinates to what DOS uses.
- */
-
-int pas16_biosparam(Disk * disk, kdev_t dev, int * ip)
+int pas16_biosparam(Disk * disk, kdev_t dev, int *ip)
{
- int size = disk->capacity;
- ip[0] = 64;
- ip[1] = 32;
- ip[2] = size >> 11; /* I think I have it as /(32*64) */
- if( ip[2] > 1024 ) { /* yes, >, not >= */
- ip[0]=255;
- ip[1]=63;
- ip[2]=size/(63*255);
- if( ip[2] > 1023 ) /* yes >1023... */
- ip[2] = 1023;
- }
+ int size = disk->capacity;
+ ip[0] = 64;
+ ip[1] = 32;
+ ip[2] = size >> 11; /* I think I have it as /(32*64) */
+ if (ip[2] > 1024) { /* yes, >, not >= */
+ ip[0] = 255;
+ ip[1] = 63;
+ ip[2] = size / (63 * 255);
+ if (ip[2] > 1023) /* yes >1023... */
+ ip[2] = 1023;
+ }
- return 0;
+ return 0;
}
-/*
- * Function : int NCR5380_pread (struct Scsi_Host *instance,
- * unsigned char *dst, int len)
- *
- * Purpose : Fast 5380 pseudo-dma read function, transfers len bytes to
- * dst
- *
- * Inputs : dst = destination, len = length in bytes
- *
- * Returns : 0 on success, non zero on a failure such as a watchdog
- * timeout.
+/**
+ * NCR5380_pread - pseudo DMA read
+ * @instance: board to read from
+ * @dst: destination for data
+ * @len: expected/max block length
+ *
+ * Fast 5380 pseudo-dma read function, transfers len bytes to
+ * dst. Unlike most boards the PAS has IRQs enabled here, which
+ * helps no end.
*/
-static inline int NCR5380_pread (struct Scsi_Host *instance, unsigned char *dst,
- int len) {
- register unsigned char *d = dst;
- register unsigned short reg = (unsigned short) (instance->io_port +
- P_DATA_REG_OFFSET);
- register int i = len;
- int ii = 0;
-
- while ( !(inb(instance->io_port + P_STATUS_REG_OFFSET) & P_ST_RDY) )
- ++ii;
-
- insb( reg, d, i );
-
- if ( inb(instance->io_port + P_TIMEOUT_STATUS_REG_OFFSET) & P_TS_TIM) {
- outb( P_TS_CT, instance->io_port + P_TIMEOUT_STATUS_REG_OFFSET);
- printk("scsi%d : watchdog timer fired in NCR5380_pread()\n",
- instance->host_no);
- return -1;
- }
- if (ii > pas_maxi)
- pas_maxi = ii;
- return 0;
+static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, int len)
+{
+ unsigned char *d = dst;
+ unsigned short reg = (unsigned short) (instance->io_port + P_DATA_REG_OFFSET);
+ int i = len;
+ int ii = 0;
+
+ while (!(inb(instance->io_port + P_STATUS_REG_OFFSET) & P_ST_RDY))
+ ++ii;
+
+ insb(reg, d, i);
+
+ if (inb(instance->io_port + P_TIMEOUT_STATUS_REG_OFFSET) & P_TS_TIM) {
+ outb(P_TS_CT, instance->io_port + P_TIMEOUT_STATUS_REG_OFFSET);
+ printk(KERN_ERR "scsi%d : watchdog timer fired in NCR5380_pread()\n", instance->host_no);
+ return -1;
+ }
+ if (ii > pas_maxi)
+ pas_maxi = ii;
+ return 0;
}
-/*
- * Function : int NCR5380_pwrite (struct Scsi_Host *instance,
- * unsigned char *src, int len)
- *
- * Purpose : Fast 5380 pseudo-dma write function, transfers len bytes from
- * src
- *
- * Inputs : src = source, len = length in bytes
- *
- * Returns : 0 on success, non zero on a failure such as a watchdog
- * timeout.
+/**
+ * NCR5380_pwrite - pseudo DMA write
+ * @instance: board to write to
+ * @src: source for data
+ * @len: expected/max block length
+ *
+ * Fast 5380 pseudo-dma write function, transfers len bytes from
+ * src. Unlike most boards the PAS has IRQs enabled here, which
+ * helps no end.
*/
-static inline int NCR5380_pwrite (struct Scsi_Host *instance, unsigned char *src,
- int len) {
- register unsigned char *s = src;
- register unsigned short reg = (instance->io_port + P_DATA_REG_OFFSET);
- register int i = len;
- int ii = 0;
-
- while ( !((inb(instance->io_port + P_STATUS_REG_OFFSET)) & P_ST_RDY) )
- ++ii;
-
- outsb( reg, s, i );
-
- if (inb(instance->io_port + P_TIMEOUT_STATUS_REG_OFFSET) & P_TS_TIM) {
- outb( P_TS_CT, instance->io_port + P_TIMEOUT_STATUS_REG_OFFSET);
- printk("scsi%d : watchdog timer fired in NCR5380_pwrite()\n",
- instance->host_no);
- return -1;
- }
- if (ii > pas_maxi)
- pas_wmaxi = ii;
- return 0;
+static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, int len)
+{
+ unsigned char *s = src;
+ unsigned short reg = (instance->io_port + P_DATA_REG_OFFSET);
+ int i = len;
+ int ii = 0;
+
+ while (!((inb(instance->io_port + P_STATUS_REG_OFFSET)) & P_ST_RDY))
+ ++ii;
+
+ outsb(reg, s, i);
+
+ if (inb(instance->io_port + P_TIMEOUT_STATUS_REG_OFFSET) & P_TS_TIM) {
+ outb(P_TS_CT, instance->io_port + P_TIMEOUT_STATUS_REG_OFFSET);
+ printk(KERN_ERR "scsi%d : watchdog timer fired in NCR5380_pwrite()\n", instance->host_no);
+ return -1;
+ }
+ if (ii > pas_maxi)
+ pas_wmaxi = ii;
+ return 0;
}
#include "NCR5380.c"
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)