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[/] [or1k/] [trunk/] [uclinux/] [uClinux-2.0.x/] [arch/] [armnommu/] [drivers/] [scsi/] [eesox.c] - Blame information for rev 1765

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/*
 * linux/arch/arm/drivers/scsi/eesox.c
 *
 * Copyright (C) 1997-1998 Russell King
 *
 * This driver is based on experimentation.  Hence, it may have made
 * assumptions about the particular card that I have available, and
 * may not be reliable!
 *
 * Changelog:
 *  01-10-1997  RMK     Created, READONLY version
 *  15-02-1998  RMK     READ/WRITE version
 *                      added DMA support and hardware definitions
 *  14-03-1998  RMK     Updated DMA support
 *                      Added terminator control
 *  15-04-1998  RMK     Only do PIO if FAS216 will allow it.
 */
 
#include <linux/module.h>
#include <linux/blk.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/ioport.h>
#include <linux/sched.h>
#include <linux/proc_fs.h>
#include <linux/unistd.h>
#include <linux/stat.h>
 
#include <asm/delay.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/dma.h>
#include <asm/ecard.h>
#include <asm/pgtable.h>
 
#include "sd.h"
#include "hosts.h"
#include "eesox.h"
 
#define NO_IRQ  255
#define NO_DMA  255
 
/* Configuration */
#define EESOX_XTALFREQ          40
#define EESOX_ASYNC_PERIOD      200
#define EESOX_SYNC_DEPTH        7
 
/*
 * List of devices that the driver will recognise
 */
#define EESOXSCSI_LIST  { MANU_EESOX, PROD_EESOX_SCSI2 }
 
#define EESOX_FAS216_OFFSET     0xc00
#define EESOX_FAS216_SHIFT      3
 
#define EESOX_STATUS            0xa00
#define EESOX_STAT_INTR         0x01
#define EESOX_STAT_DMA          0x02
 
#define EESOX_CONTROL           0xa00
#define EESOX_INTR_ENABLE       0x04
#define EESOX_TERM_ENABLE       0x02
#define EESOX_RESET             0x01
 
#define EESOX_DMA_OFFSET        0xe00
 
/*
 * Version
 */
#define VER_MAJOR       0
#define VER_MINOR       0
#define VER_PATCH       2
 
static struct expansion_card *ecs[MAX_ECARDS];
 
/*
 * Use term=0,1,0,0,0 to turn terminators on/off
 */
int term[MAX_ECARDS] = { 1, 1, 1, 1, 1, 1, 1, 1 };
 
static struct proc_dir_entry proc_scsi_eesox = {
        PROC_SCSI_QLOGICISP, 5, "eesox",
        S_IFDIR | S_IRUGO | S_IXUGO, 2
};
 
/* Prototype: void eesoxscsi_irqenable(ec, irqnr)
 * Purpose  : Enable interrupts on EESOX SCSI card
 * Params   : ec    - expansion card structure
 *          : irqnr - interrupt number
 */
static void
eesoxscsi_irqenable(struct expansion_card *ec, int irqnr)
{
        struct control *control = (struct control *)ec->irq_data;
 
        control->control |= EESOX_INTR_ENABLE;
 
        outb(control->control, control->io_port);
}
 
/* Prototype: void eesoxscsi_irqdisable(ec, irqnr)
 * Purpose  : Disable interrupts on EESOX SCSI card
 * Params   : ec    - expansion card structure
 *          : irqnr - interrupt number
 */
static void
eesoxscsi_irqdisable(struct expansion_card *ec, int irqnr)
{
        struct control *control = (struct control *)ec->irq_data;
 
        control->control &= ~EESOX_INTR_ENABLE;
 
        outb(control->control, control->io_port);
}
 
static const expansioncard_ops_t eesoxscsi_ops = {
        eesoxscsi_irqenable,
        eesoxscsi_irqdisable,
        NULL,
        NULL,
        NULL,
        NULL
};
 
/* Prototype: void eesoxscsi_terminator_ctl(*host, on_off)
 * Purpose  : Turn the EESOX SCSI terminators on or off
 * Params   : host   - card to turn on/off
 *          : on_off - !0 to turn on, 0 to turn off
 */
static void
eesoxscsi_terminator_ctl(struct Scsi_Host *host, int on_off)
{
        EESOXScsi_Info *info = (EESOXScsi_Info *)host->hostdata;
        unsigned long flags;
 
        save_flags_cli(flags);
        if (on_off)
                info->control.control |= EESOX_TERM_ENABLE;
        else
                info->control.control &= ~EESOX_TERM_ENABLE;
        restore_flags(flags);
 
        outb(info->control.control, info->control.io_port);
}
 
/* Prototype: void eesoxscsi_intr(irq, *dev_id, *regs)
 * Purpose  : handle interrupts from EESOX SCSI card
 * Params   : irq    - interrupt number
 *            dev_id - user-defined (Scsi_Host structure)
 *            regs   - processor registers at interrupt
 */
static void
eesoxscsi_intr(int irq, void *dev_id, struct pt_regs *regs)
{
        struct Scsi_Host *host = (struct Scsi_Host *)dev_id;
 
        fas216_intr(host);
}
 
static void
eesoxscsi_invalidate(char *addr, long len, fasdmadir_t direction)
{
        unsigned int page;
 
        if (direction == DMA_OUT) {
                for(page = (unsigned int) addr; len > 0;
                     page += PAGE_SIZE, len -= PAGE_SIZE)
                        flush_page_to_ram(page);
        } else
                flush_cache_range(current->mm, (unsigned long)addr,
                                  (unsigned long)addr + len);
}
 
/* Prototype: fasdmatype_t eesoxscsi_dma_setup(host, SCpnt, direction, min_type)
 * Purpose  : initialises DMA/PIO
 * Params   : host      - host
 *            SCpnt     - command
 *            direction - DMA on to/off of card
 *            min_type  - minimum DMA support that we must have for this transfer
 * Returns  : type of transfer to be performed
 */
static fasdmatype_t
eesoxscsi_dma_setup(struct Scsi_Host *host, Scsi_Pointer *SCp,
                       fasdmadir_t direction, fasdmatype_t min_type)
{
        EESOXScsi_Info *info = (EESOXScsi_Info *)host->hostdata;
        int dmach = host->dma_channel;
 
        if (dmach != NO_DMA &&
            (min_type == fasdma_real_all || SCp->this_residual >= 512)) {
                int buf;
 
                for(buf = 1; buf <= SCp->buffers_residual &&
                             buf < NR_SG; buf++) {
                        info->dmasg[buf].address = __virt_to_bus(
                                (unsigned long)SCp->buffer[buf].address);
                        info->dmasg[buf].length = SCp->buffer[buf].length;
 
                        eesoxscsi_invalidate(SCp->buffer[buf].address,
                                                SCp->buffer[buf].length,
                                                direction);
                }
 
                info->dmasg[0].address = __virt_to_phys((unsigned long)SCp->ptr);
                info->dmasg[0].length = SCp->this_residual;
                eesoxscsi_invalidate(SCp->ptr,
                                        SCp->this_residual, direction);
 
                disable_dma(dmach);
                set_dma_sg(dmach, info->dmasg, buf);
                set_dma_mode(dmach,
                             direction == DMA_OUT ? DMA_MODE_WRITE :
                                                    DMA_MODE_READ);
                enable_dma(dmach);
                return fasdma_real_all;
        }
        /*
         * We don't do DMA, we only do slow PIO
         *
         * Some day, we will do Pseudo DMA
         */
        return fasdma_pseudo;
}
 
static void
eesoxscsi_dma_pseudo(struct Scsi_Host *host, Scsi_Pointer *SCp,
                     fasdmadir_t dir, int transfer_size)
{
        EESOXScsi_Info *info = (EESOXScsi_Info *)host->hostdata;
        unsigned int status;
        unsigned int length = SCp->this_residual;
        union {
                unsigned char *c;
                unsigned short *s;
                unsigned long *l;
        } buffer;
 
        buffer.c = SCp->ptr;
 
        status = inb(host->io_port + EESOX_STATUS);
        if (dir == DMA_IN) {
                while (length > 8) {
                        if (status & EESOX_STAT_DMA) {
                                unsigned long l1, l2;
 
                                l1 = inw(info->dmaarea);
                                l1 |= inw(info->dmaarea) << 16;
                                l2 = inw(info->dmaarea);
                                l2 |= inw(info->dmaarea) << 16;
                                *buffer.l++ = l1;
                                *buffer.l++ = l2;
                                length -= 8;
                        } else if (status & EESOX_STAT_INTR)
                                goto end;
                        status = inb(host->io_port + EESOX_STATUS);
                }
 
                while (length > 1) {
                        if (status & EESOX_STAT_DMA) {
                                *buffer.s++ = inw(info->dmaarea);
                                length -= 2;
                        } else if (status & EESOX_STAT_INTR)
                                goto end;
                        status = inb(host->io_port + EESOX_STATUS);
                }
 
                while (length > 0) {
                        if (status & EESOX_STAT_DMA) {
                                *buffer.c++ = inw(info->dmaarea);
                                length -= 1;
                        } else if (status & EESOX_STAT_INTR)
                                goto end;
                        status = inb(host->io_port + EESOX_STATUS);
                }
        } else {
                while (length > 8) {
                        if (status & EESOX_STAT_DMA) {
                                unsigned long l1, l2;
 
                                l1 = *buffer.l++;
                                l2 = *buffer.l++;
 
                                outw(l1, info->dmaarea);
                                outw(l1 >> 16, info->dmaarea);
                                outw(l2, info->dmaarea);
                                outw(l2 >> 16, info->dmaarea);
                                length -= 8;
                        } else if (status & EESOX_STAT_INTR)
                                goto end;
                        status = inb(host->io_port + EESOX_STATUS);
                }
 
                while (length > 1) {
                        if (status & EESOX_STAT_DMA) {
                                outw(*buffer.s++, info->dmaarea);
                                length -= 2;
                        } else if (status & EESOX_STAT_INTR)
                                goto end;
                        status = inb(host->io_port + EESOX_STATUS);
                }
 
                while (length > 0) {
                        if (status & EESOX_STAT_DMA) {
                                outw(*buffer.c++, info->dmaarea);
                                length -= 1;
                        } else if (status & EESOX_STAT_INTR)
                                goto end;
                        status = inb(host->io_port + EESOX_STATUS);
                }
        }
end:
}
 
/* Prototype: int eesoxscsi_dma_stop(host, SCpnt)
 * Purpose  : stops DMA/PIO
 * Params   : host  - host
 *            SCpnt - command
 */
static void
eesoxscsi_dma_stop(struct Scsi_Host *host, Scsi_Pointer *SCp)
{
        if (host->dma_channel != NO_DMA)
                disable_dma(host->dma_channel);
}
 
/* Prototype: int eesoxscsi_detect(Scsi_Host_Template * tpnt)
 * Purpose  : initialises EESOX SCSI driver
 * Params   : tpnt - template for this SCSI adapter
 * Returns  : >0 if host found, 0 otherwise.
 */
int
eesoxscsi_detect(Scsi_Host_Template *tpnt)
{
        static const card_ids eesoxscsi_cids[] =
                        { EESOXSCSI_LIST, { 0xffff, 0xffff} };
        int count = 0;
        struct Scsi_Host *host;
 
        tpnt->proc_dir = &proc_scsi_eesox;
        memset(ecs, 0, sizeof (ecs));
 
        ecard_startfind();
 
        while(1) {
                EESOXScsi_Info *info;
 
                ecs[count] = ecard_find(0, eesoxscsi_cids);
                if (!ecs[count])
                        break;
 
                ecard_claim(ecs[count]);
 
                host = scsi_register(tpnt, sizeof (EESOXScsi_Info));
                if (!host) {
                        ecard_release(ecs[count]);
                        break;
                }
 
                host->io_port = ecard_address(ecs[count], ECARD_IOC, ECARD_FAST);
                host->irq = ecs[count]->irq;
                host->dma_channel = ecs[count]->dma;
                info = (EESOXScsi_Info *)host->hostdata;
 
                info->control.io_port = host->io_port + EESOX_CONTROL;
                info->control.control = term[count] ? EESOX_TERM_ENABLE : 0;
                outb(info->control.control, info->control.io_port);
 
                ecs[count]->irqaddr = (unsigned char *)
                            ioaddr(host->io_port + EESOX_STATUS);
                ecs[count]->irqmask = EESOX_STAT_INTR;
                ecs[count]->irq_data = &info->control;
                ecs[count]->ops = (expansioncard_ops_t *)&eesoxscsi_ops;
 
                info->info.scsi.io_port         = host->io_port + EESOX_FAS216_OFFSET;
                info->info.scsi.io_shift        = EESOX_FAS216_SHIFT;
                info->info.scsi.irq             = host->irq;
                info->info.ifcfg.clockrate      = EESOX_XTALFREQ;
                info->info.ifcfg.select_timeout = 255;
                info->info.ifcfg.asyncperiod    = EESOX_ASYNC_PERIOD;
                info->info.ifcfg.sync_max_depth = EESOX_SYNC_DEPTH;
                info->info.ifcfg.cntl3          = CNTL3_BS8 | CNTL3_FASTSCSI | CNTL3_FASTCLK;
                info->info.ifcfg.disconnect_ok  = 1;
                info->info.ifcfg.wide_max_size  = 0;
                info->info.dma.setup            = eesoxscsi_dma_setup;
                info->info.dma.pseudo           = eesoxscsi_dma_pseudo;
                info->info.dma.stop             = eesoxscsi_dma_stop;
                info->dmaarea                   = host->io_port + EESOX_DMA_OFFSET;
 
                request_region(host->io_port + EESOX_FAS216_OFFSET,
                                16 << EESOX_FAS216_SHIFT, "eesox2-fas");
 
                if (request_irq(host->irq, eesoxscsi_intr,
                                SA_INTERRUPT, "eesox", host)) {
                        printk("scsi%d: IRQ%d not free, interrupts disabled\n",
                               host->host_no, host->irq);
                        host->irq = NO_IRQ;
                }
 
                if (request_dma(host->dma_channel, "eesox")) {
                        printk("scsi%d: DMA%d not free, DMA disabled\n",
                               host->host_no, host->dma_channel);
                        host->dma_channel = NO_DMA;
                }
 
                fas216_init(host);
                ++count;
        }
        return count;
}
 
/* Prototype: int eesoxscsi_release(struct Scsi_Host * host)
 * Purpose  : releases all resources used by this adapter
 * Params   : host - driver host structure to return info for.
 */
int eesoxscsi_release(struct Scsi_Host *host)
{
        int i;
 
        fas216_release(host);
 
        if (host->irq != NO_IRQ)
                free_irq(host->irq, host);
        if (host->dma_channel != NO_DMA)
                free_dma(host->dma_channel);
        release_region(host->io_port + EESOX_FAS216_OFFSET, 16 << EESOX_FAS216_SHIFT);
 
        for (i = 0; i < MAX_ECARDS; i++)
                if (ecs[i] &&
                    host->io_port == ecard_address(ecs[i], ECARD_IOC, ECARD_FAST))
                        ecard_release(ecs[i]);
        return 0;
}
 
/* Prototype: const char *eesoxscsi_info(struct Scsi_Host * host)
 * Purpose  : returns a descriptive string about this interface,
 * Params   : host - driver host structure to return info for.
 * Returns  : pointer to a static buffer containing null terminated string.
 */
const char *eesoxscsi_info(struct Scsi_Host *host)
{
        EESOXScsi_Info *info = (EESOXScsi_Info *)host->hostdata;
        static char string[100], *p;
 
        p = string;
        p += sprintf(string, "%s at port %X ", host->hostt->name, host->io_port);
 
        if (host->irq != NO_IRQ)
                p += sprintf(p, "irq %d ", host->irq);
        else
                p += sprintf(p, "NO IRQ ");
 
        if (host->dma_channel != NO_DMA)
                p += sprintf(p, "dma %d ", host->dma_channel);
        else
                p += sprintf(p, "NO DMA ");
 
        p += sprintf(p, "v%d.%d.%d scsi %s", VER_MAJOR, VER_MINOR, VER_PATCH,
                  info->info.scsi.type);
 
        p += sprintf(p, " terminators %s",
                  info->control.control & EESOX_TERM_ENABLE ? "on" : "off");
 
        return string;
}
 
/* Prototype: int eesoxscsi_set_proc_info(struct Scsi_Host *host, char *buffer, int length)
 * Purpose  : Set a driver specific function
 * Params   : host   - host to setup
 *          : buffer - buffer containing string describing operation
 *          : length - length of string
 * Returns  : -EINVAL, or 0
 */
static int
eesoxscsi_set_proc_info(struct Scsi_Host *host, char *buffer, int length)
{
        int ret = length;
 
        if (length >= 9 && strncmp(buffer, "EESOXSCSI", 9) == 0) {
                buffer += 9;
                length -= 9;
 
                if (length >= 5 && strncmp(buffer, "term=", 5) == 0) {
                        if (buffer[5] == '1')
                                eesoxscsi_terminator_ctl(host, 1);
                        else if (buffer[5] == '0')
                                eesoxscsi_terminator_ctl(host, 0);
                        else
                                ret = -EINVAL;
                } else
                        ret = -EINVAL;
        } else
                ret = -EINVAL;
 
        return ret;
}
 
/* Prototype: int eesoxscsi_proc_info(char *buffer, char **start, off_t offset,
 *                                    int length, int host_no, int inout)
 * Purpose  : Return information about the driver to a user process accessing
 *            the /proc filesystem.
 * Params   : buffer - a buffer to write information to
 *            start  - a pointer into this buffer set by this routine to the start
 *                     of the required information.
 *            offset - offset into information that we have read upto.
 *            length - length of buffer
 *            host_no - host number to return information for
 *            inout  - 0 for reading, 1 for writing.
 * Returns  : length of data written to buffer.
 */
int eesoxscsi_proc_info(char *buffer, char **start, off_t offset,
                            int length, int host_no, int inout)
{
        int pos, begin, first;
        struct Scsi_Host *host = scsi_hostlist;
        EESOXScsi_Info *info;
        Scsi_Device *scd;
 
        while (host) {
                if (host->host_no == host_no)
                        break;
                host = host->next;
        }
        if (!host)
                return 0;
 
        if (inout == 1)
                return eesoxscsi_set_proc_info(host, buffer, length);
 
        info = (EESOXScsi_Info *)host->hostdata;
 
        begin = 0;
        pos = sprintf(buffer,
                        "EESOX SCSI driver version %d.%d.%d\n",
                        VER_MAJOR, VER_MINOR, VER_PATCH);
        pos += sprintf(buffer + pos,
                        "Address: %08X    IRQ : %d     DMA : %d\n"
                        "FAS    : %-10s  TERM: %-3s\n\n"
                        "Statistics:\n",
                        host->io_port, host->irq, host->dma_channel,
                        info->info.scsi.type, info->control.control & EESOX_TERM_ENABLE ? "on" : "off");
 
        pos += sprintf(buffer+pos,
                        "Queued commands: %-10u   Issued commands: %-10u\n"
                        "Done commands  : %-10u   Reads          : %-10u\n"
                        "Writes         : %-10u   Others         : %-10u\n"
                        "Disconnects    : %-10u   Aborts         : %-10u\n"
                        "Resets         : %-10u\n",
                        info->info.stats.queues,      info->info.stats.removes,
                        info->info.stats.fins,        info->info.stats.reads,
                        info->info.stats.writes,      info->info.stats.miscs,
                        info->info.stats.disconnects, info->info.stats.aborts,
                        info->info.stats.resets);
 
        first = 1;
        for (scd = scsi_devices; scd; scd = scd->next) {
                if (scd->host == host) {
                        int len;
 
                        if (first) {
                                pos += sprintf(buffer+pos,
                                               "\nAttached devices:\n");
                                first = 0;
                        }
 
                        proc_print_scsidevice(scd, buffer, &len, pos);
                        pos += len;
                        pos += sprintf(buffer+pos, "Extensions: ");
                        if (scd->tagged_supported)
                                pos += sprintf(buffer+pos, "TAG %sabled [%d] ",
                                              scd->tagged_queue ? "en" : "dis",
                                              scd->current_tag);
                        pos += sprintf(buffer+pos, "\n");
 
                        if (pos + begin < offset) {
                                begin += pos;
                                pos = 0;
                        }
                        if (pos + begin > offset + length)
                                break;
                }
        }
 
        *start = buffer + (offset - begin);
        pos -= offset - begin;
        if (pos > length)
                pos = length;
 
        return pos;
}
 
#ifdef MODULE
Scsi_Host_Template driver_template = EESOXSCSI;
 
#include "scsi_module.c"
#endif

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[/] [or1k/] [trunk/] [uclinux/] [uClinux-2.0.x/] [arch/] [armnommu/] [drivers/] [scsi/] [eesox.c] - Blame information for rev 1765

Line No.	Rev	Author	Line
1	199	simons	`/*`
2			`* linux/arch/arm/drivers/scsi/eesox.c`
3			`*`
4			`* Copyright (C) 1997-1998 Russell King`
5			`*`
6			`* This driver is based on experimentation. Hence, it may have made`
7			`* assumptions about the particular card that I have available, and`
8			`* may not be reliable!`
9			`*`
10			`* Changelog:`
11			`* 01-10-1997 RMK Created, READONLY version`
12			`* 15-02-1998 RMK READ/WRITE version`
13			`* added DMA support and hardware definitions`
14			`* 14-03-1998 RMK Updated DMA support`
15			`* Added terminator control`
16			`* 15-04-1998 RMK Only do PIO if FAS216 will allow it.`
17			`*/`
18
19			`#include <linux/module.h>`
20			`#include <linux/blk.h>`
21			`#include <linux/kernel.h>`
22			`#include <linux/string.h>`
23			`#include <linux/ioport.h>`
24			`#include <linux/sched.h>`
25			`#include <linux/proc_fs.h>`
26			`#include <linux/unistd.h>`
27			`#include <linux/stat.h>`
28
29			`#include <asm/delay.h>`
30			`#include <asm/io.h>`
31			`#include <asm/irq.h>`
32			`#include <asm/dma.h>`
33			`#include <asm/ecard.h>`
34			`#include <asm/pgtable.h>`
35
36			`#include "sd.h"`
37			`#include "hosts.h"`
38			`#include "eesox.h"`
39
40			`#define NO_IRQ 255`
41			`#define NO_DMA 255`
42
43			`/* Configuration */`
44			`#define EESOX_XTALFREQ 40`
45			`#define EESOX_ASYNC_PERIOD 200`
46			`#define EESOX_SYNC_DEPTH 7`
47
48			`/*`
49			`* List of devices that the driver will recognise`
50			`*/`
51			`#define EESOXSCSI_LIST { MANU_EESOX, PROD_EESOX_SCSI2 }`
52
53			`#define EESOX_FAS216_OFFSET 0xc00`
54			`#define EESOX_FAS216_SHIFT 3`
55
56			`#define EESOX_STATUS 0xa00`
57			`#define EESOX_STAT_INTR 0x01`
58			`#define EESOX_STAT_DMA 0x02`
59
60			`#define EESOX_CONTROL 0xa00`
61			`#define EESOX_INTR_ENABLE 0x04`
62			`#define EESOX_TERM_ENABLE 0x02`
63			`#define EESOX_RESET 0x01`
64
65			`#define EESOX_DMA_OFFSET 0xe00`
66
67			`/*`
68			`* Version`
69			`*/`
70			`#define VER_MAJOR 0`
71			`#define VER_MINOR 0`
72			`#define VER_PATCH 2`
73
74			`static struct expansion_card *ecs[MAX_ECARDS];`
75
76			`/*`
77			`* Use term=0,1,0,0,0 to turn terminators on/off`
78			`*/`
79			`int term[MAX_ECARDS] = { 1, 1, 1, 1, 1, 1, 1, 1 };`
80
81			`static struct proc_dir_entry proc_scsi_eesox = {`
82			`PROC_SCSI_QLOGICISP, 5, "eesox",`
83			`S_IFDIR \| S_IRUGO \| S_IXUGO, 2`
84			`};`
85
86			`/* Prototype: void eesoxscsi_irqenable(ec, irqnr)`
87			`* Purpose : Enable interrupts on EESOX SCSI card`
88			`* Params : ec - expansion card structure`
89			`* : irqnr - interrupt number`
90			`*/`
91			`static void`
92			`eesoxscsi_irqenable(struct expansion_card *ec, int irqnr)`
93			`{`
94			`struct control control = (struct control )ec->irq_data;`
95
96			`control->control \|= EESOX_INTR_ENABLE;`
97
98			`outb(control->control, control->io_port);`
99			`}`
100
101			`/* Prototype: void eesoxscsi_irqdisable(ec, irqnr)`
102			`* Purpose : Disable interrupts on EESOX SCSI card`
103			`* Params : ec - expansion card structure`
104			`* : irqnr - interrupt number`
105			`*/`
106			`static void`
107			`eesoxscsi_irqdisable(struct expansion_card *ec, int irqnr)`
108			`{`
109			`struct control control = (struct control )ec->irq_data;`
110
111			`control->control &= ~EESOX_INTR_ENABLE;`
112
113			`outb(control->control, control->io_port);`
114			`}`
115
116			`static const expansioncard_ops_t eesoxscsi_ops = {`
117			`eesoxscsi_irqenable,`
118			`eesoxscsi_irqdisable,`
119			`NULL,`
120			`NULL,`
121			`NULL,`
122			`NULL`
123			`};`
124
125			`/* Prototype: void eesoxscsi_terminator_ctl(*host, on_off)`
126			`* Purpose : Turn the EESOX SCSI terminators on or off`
127			`* Params : host - card to turn on/off`
128			`* : on_off - !0 to turn on, 0 to turn off`
129			`*/`
130			`static void`
131			`eesoxscsi_terminator_ctl(struct Scsi_Host *host, int on_off)`
132			`{`
133			`EESOXScsi_Info info = (EESOXScsi_Info )host->hostdata;`
134			`unsigned long flags;`
135
136			`save_flags_cli(flags);`
137			`if (on_off)`
138			`info->control.control \|= EESOX_TERM_ENABLE;`
139			`else`
140			`info->control.control &= ~EESOX_TERM_ENABLE;`
141			`restore_flags(flags);`
142
143			`outb(info->control.control, info->control.io_port);`
144			`}`
145
146			`/* Prototype: void eesoxscsi_intr(irq, dev_id, regs)`
147			`* Purpose : handle interrupts from EESOX SCSI card`
148			`* Params : irq - interrupt number`
149			`* dev_id - user-defined (Scsi_Host structure)`
150			`* regs - processor registers at interrupt`
151			`*/`
152			`static void`
153			`eesoxscsi_intr(int irq, void dev_id, struct pt_regs regs)`
154			`{`
155			`struct Scsi_Host host = (struct Scsi_Host )dev_id;`
156
157			`fas216_intr(host);`
158			`}`
159
160			`static void`
161			`eesoxscsi_invalidate(char *addr, long len, fasdmadir_t direction)`
162			`{`
163			`unsigned int page;`
164
165			`if (direction == DMA_OUT) {`
166			`for(page = (unsigned int) addr; len > 0;`
167			`page += PAGE_SIZE, len -= PAGE_SIZE)`
168			`flush_page_to_ram(page);`
169			`} else`
170			`flush_cache_range(current->mm, (unsigned long)addr,`
171			`(unsigned long)addr + len);`
172			`}`
173
174			`/* Prototype: fasdmatype_t eesoxscsi_dma_setup(host, SCpnt, direction, min_type)`
175			`* Purpose : initialises DMA/PIO`
176			`* Params : host - host`
177			`* SCpnt - command`
178			`* direction - DMA on to/off of card`
179			`* min_type - minimum DMA support that we must have for this transfer`
180			`* Returns : type of transfer to be performed`
181			`*/`
182			`static fasdmatype_t`
183			`eesoxscsi_dma_setup(struct Scsi_Host host, Scsi_Pointer SCp,`
184			`fasdmadir_t direction, fasdmatype_t min_type)`
185			`{`
186			`EESOXScsi_Info info = (EESOXScsi_Info )host->hostdata;`
187			`int dmach = host->dma_channel;`
188
189			`if (dmach != NO_DMA &&`
190			`(min_type == fasdma_real_all \|\| SCp->this_residual >= 512)) {`
191			`int buf;`
192
193			`for(buf = 1; buf <= SCp->buffers_residual &&`
194			`buf < NR_SG; buf++) {`
195			`info->dmasg[buf].address = __virt_to_bus(`
196			`(unsigned long)SCp->buffer[buf].address);`
197			`info->dmasg[buf].length = SCp->buffer[buf].length;`
198
199			`eesoxscsi_invalidate(SCp->buffer[buf].address,`
200			`SCp->buffer[buf].length,`
201			`direction);`
202			`}`
203
204			`info->dmasg[0].address = __virt_to_phys((unsigned long)SCp->ptr);`
205			`info->dmasg[0].length = SCp->this_residual;`
206			`eesoxscsi_invalidate(SCp->ptr,`
207			`SCp->this_residual, direction);`
208
209			`disable_dma(dmach);`
210			`set_dma_sg(dmach, info->dmasg, buf);`
211			`set_dma_mode(dmach,`
212			`direction == DMA_OUT ? DMA_MODE_WRITE :`
213			`DMA_MODE_READ);`
214			`enable_dma(dmach);`
215			`return fasdma_real_all;`
216			`}`
217			`/*`
218			`* We don't do DMA, we only do slow PIO`
219			`*`
220			`* Some day, we will do Pseudo DMA`
221			`*/`
222			`return fasdma_pseudo;`
223			`}`
224
225			`static void`
226			`eesoxscsi_dma_pseudo(struct Scsi_Host host, Scsi_Pointer SCp,`
227			`fasdmadir_t dir, int transfer_size)`
228			`{`
229			`EESOXScsi_Info info = (EESOXScsi_Info )host->hostdata;`
230			`unsigned int status;`
231			`unsigned int length = SCp->this_residual;`
232			`union {`
233			`unsigned char *c;`
234			`unsigned short *s;`
235			`unsigned long *l;`
236			`} buffer;`
237
238			`buffer.c = SCp->ptr;`
239
240			`status = inb(host->io_port + EESOX_STATUS);`
241			`if (dir == DMA_IN) {`
242			`while (length > 8) {`
243			`if (status & EESOX_STAT_DMA) {`
244			`unsigned long l1, l2;`
245
246			`l1 = inw(info->dmaarea);`
247			`l1 \|= inw(info->dmaarea) << 16;`
248			`l2 = inw(info->dmaarea);`
249			`l2 \|= inw(info->dmaarea) << 16;`
250			`*buffer.l++ = l1;`
251			`*buffer.l++ = l2;`
252			`length -= 8;`
253			`} else if (status & EESOX_STAT_INTR)`
254			`goto end;`
255			`status = inb(host->io_port + EESOX_STATUS);`
256			`}`
257
258			`while (length > 1) {`
259			`if (status & EESOX_STAT_DMA) {`
260			`*buffer.s++ = inw(info->dmaarea);`
261			`length -= 2;`
262			`} else if (status & EESOX_STAT_INTR)`
263			`goto end;`
264			`status = inb(host->io_port + EESOX_STATUS);`
265			`}`
266
267			`while (length > 0) {`
268			`if (status & EESOX_STAT_DMA) {`
269			`*buffer.c++ = inw(info->dmaarea);`
270			`length -= 1;`
271			`} else if (status & EESOX_STAT_INTR)`
272			`goto end;`
273			`status = inb(host->io_port + EESOX_STATUS);`
274			`}`
275			`} else {`
276			`while (length > 8) {`
277			`if (status & EESOX_STAT_DMA) {`
278			`unsigned long l1, l2;`
279
280			`l1 = *buffer.l++;`
281			`l2 = *buffer.l++;`
282
283			`outw(l1, info->dmaarea);`
284			`outw(l1 >> 16, info->dmaarea);`
285			`outw(l2, info->dmaarea);`
286			`outw(l2 >> 16, info->dmaarea);`
287			`length -= 8;`
288			`} else if (status & EESOX_STAT_INTR)`
289			`goto end;`
290			`status = inb(host->io_port + EESOX_STATUS);`
291			`}`
292
293			`while (length > 1) {`
294			`if (status & EESOX_STAT_DMA) {`
295			`outw(*buffer.s++, info->dmaarea);`
296			`length -= 2;`
297			`} else if (status & EESOX_STAT_INTR)`
298			`goto end;`
299			`status = inb(host->io_port + EESOX_STATUS);`
300			`}`
301
302			`while (length > 0) {`
303			`if (status & EESOX_STAT_DMA) {`
304			`outw(*buffer.c++, info->dmaarea);`
305			`length -= 1;`
306			`} else if (status & EESOX_STAT_INTR)`
307			`goto end;`
308			`status = inb(host->io_port + EESOX_STATUS);`
309			`}`
310			`}`
311			`end:`
312			`}`
313
314			`/* Prototype: int eesoxscsi_dma_stop(host, SCpnt)`
315			`* Purpose : stops DMA/PIO`
316			`* Params : host - host`
317			`* SCpnt - command`
318			`*/`
319			`static void`
320			`eesoxscsi_dma_stop(struct Scsi_Host host, Scsi_Pointer SCp)`
321			`{`
322			`if (host->dma_channel != NO_DMA)`
323			`disable_dma(host->dma_channel);`
324			`}`
325
326			`/* Prototype: int eesoxscsi_detect(Scsi_Host_Template * tpnt)`
327			`* Purpose : initialises EESOX SCSI driver`
328			`* Params : tpnt - template for this SCSI adapter`
329			`* Returns : >0 if host found, 0 otherwise.`
330			`*/`
331			`int`
332			`eesoxscsi_detect(Scsi_Host_Template *tpnt)`
333			`{`
334			`static const card_ids eesoxscsi_cids[] =`
335			`{ EESOXSCSI_LIST, { 0xffff, 0xffff} };`
336			`int count = 0;`
337			`struct Scsi_Host *host;`
338
339			`tpnt->proc_dir = &proc_scsi_eesox;`
340			`memset(ecs, 0, sizeof (ecs));`
341
342			`ecard_startfind();`
343
344			`while(1) {`
345			`EESOXScsi_Info *info;`
346
347			`ecs[count] = ecard_find(0, eesoxscsi_cids);`
348			`if (!ecs[count])`
349			`break;`
350
351			`ecard_claim(ecs[count]);`
352
353			`host = scsi_register(tpnt, sizeof (EESOXScsi_Info));`
354			`if (!host) {`
355			`ecard_release(ecs[count]);`
356			`break;`
357			`}`
358
359			`host->io_port = ecard_address(ecs[count], ECARD_IOC, ECARD_FAST);`
360			`host->irq = ecs[count]->irq;`
361			`host->dma_channel = ecs[count]->dma;`
362			`info = (EESOXScsi_Info *)host->hostdata;`
363
364			`info->control.io_port = host->io_port + EESOX_CONTROL;`
365			`info->control.control = term[count] ? EESOX_TERM_ENABLE : 0;`
366			`outb(info->control.control, info->control.io_port);`
367
368			`ecs[count]->irqaddr = (unsigned char *)`
369			`ioaddr(host->io_port + EESOX_STATUS);`
370			`ecs[count]->irqmask = EESOX_STAT_INTR;`
371			`ecs[count]->irq_data = &info->control;`
372			`ecs[count]->ops = (expansioncard_ops_t *)&eesoxscsi_ops;`
373
374			`info->info.scsi.io_port = host->io_port + EESOX_FAS216_OFFSET;`
375			`info->info.scsi.io_shift = EESOX_FAS216_SHIFT;`
376			`info->info.scsi.irq = host->irq;`
377			`info->info.ifcfg.clockrate = EESOX_XTALFREQ;`
378			`info->info.ifcfg.select_timeout = 255;`
379			`info->info.ifcfg.asyncperiod = EESOX_ASYNC_PERIOD;`
380			`info->info.ifcfg.sync_max_depth = EESOX_SYNC_DEPTH;`
381			`info->info.ifcfg.cntl3 = CNTL3_BS8 \| CNTL3_FASTSCSI \| CNTL3_FASTCLK;`
382			`info->info.ifcfg.disconnect_ok = 1;`
383			`info->info.ifcfg.wide_max_size = 0;`
384			`info->info.dma.setup = eesoxscsi_dma_setup;`
385			`info->info.dma.pseudo = eesoxscsi_dma_pseudo;`
386			`info->info.dma.stop = eesoxscsi_dma_stop;`
387			`info->dmaarea = host->io_port + EESOX_DMA_OFFSET;`
388
389			`request_region(host->io_port + EESOX_FAS216_OFFSET,`
390			`16 << EESOX_FAS216_SHIFT, "eesox2-fas");`
391
392			`if (request_irq(host->irq, eesoxscsi_intr,`
393			`SA_INTERRUPT, "eesox", host)) {`
394			`printk("scsi%d: IRQ%d not free, interrupts disabled\n",`
395			`host->host_no, host->irq);`
396			`host->irq = NO_IRQ;`
397			`}`
398
399			`if (request_dma(host->dma_channel, "eesox")) {`
400			`printk("scsi%d: DMA%d not free, DMA disabled\n",`
401			`host->host_no, host->dma_channel);`
402			`host->dma_channel = NO_DMA;`
403			`}`
404
405			`fas216_init(host);`
406			`++count;`
407			`}`
408			`return count;`
409			`}`
410
411			`/* Prototype: int eesoxscsi_release(struct Scsi_Host * host)`
412			`* Purpose : releases all resources used by this adapter`
413			`* Params : host - driver host structure to return info for.`
414			`*/`
415			`int eesoxscsi_release(struct Scsi_Host *host)`
416			`{`
417			`int i;`
418
419			`fas216_release(host);`
420
421			`if (host->irq != NO_IRQ)`
422			`free_irq(host->irq, host);`
423			`if (host->dma_channel != NO_DMA)`
424			`free_dma(host->dma_channel);`
425			`release_region(host->io_port + EESOX_FAS216_OFFSET, 16 << EESOX_FAS216_SHIFT);`
426
427			`for (i = 0; i < MAX_ECARDS; i++)`
428			`if (ecs[i] &&`
429			`host->io_port == ecard_address(ecs[i], ECARD_IOC, ECARD_FAST))`
430			`ecard_release(ecs[i]);`
431			`return 0;`
432			`}`
433
434			`/* Prototype: const char eesoxscsi_info(struct Scsi_Host host)`
435			`* Purpose : returns a descriptive string about this interface,`
436			`* Params : host - driver host structure to return info for.`
437			`* Returns : pointer to a static buffer containing null terminated string.`
438			`*/`
439			`const char eesoxscsi_info(struct Scsi_Host host)`
440			`{`
441			`EESOXScsi_Info info = (EESOXScsi_Info )host->hostdata;`
442			`static char string[100], *p;`
443
444			`p = string;`
445			`p += sprintf(string, "%s at port %X ", host->hostt->name, host->io_port);`
446
447			`if (host->irq != NO_IRQ)`
448			`p += sprintf(p, "irq %d ", host->irq);`
449			`else`
450			`p += sprintf(p, "NO IRQ ");`
451
452			`if (host->dma_channel != NO_DMA)`
453			`p += sprintf(p, "dma %d ", host->dma_channel);`
454			`else`
455			`p += sprintf(p, "NO DMA ");`
456
457			`p += sprintf(p, "v%d.%d.%d scsi %s", VER_MAJOR, VER_MINOR, VER_PATCH,`
458			`info->info.scsi.type);`
459
460			`p += sprintf(p, " terminators %s",`
461			`info->control.control & EESOX_TERM_ENABLE ? "on" : "off");`
462
463			`return string;`
464			`}`
465
466			`/* Prototype: int eesoxscsi_set_proc_info(struct Scsi_Host host, char buffer, int length)`
467			`* Purpose : Set a driver specific function`
468			`* Params : host - host to setup`
469			`* : buffer - buffer containing string describing operation`
470			`* : length - length of string`
471			`* Returns : -EINVAL, or 0`
472			`*/`
473			`static int`
474			`eesoxscsi_set_proc_info(struct Scsi_Host host, char buffer, int length)`
475			`{`
476			`int ret = length;`
477
478			`if (length >= 9 && strncmp(buffer, "EESOXSCSI", 9) == 0) {`
479			`buffer += 9;`
480			`length -= 9;`
481
482			`if (length >= 5 && strncmp(buffer, "term=", 5) == 0) {`
483			`if (buffer[5] == '1')`
484			`eesoxscsi_terminator_ctl(host, 1);`
485			`else if (buffer[5] == '0')`
486			`eesoxscsi_terminator_ctl(host, 0);`
487			`else`
488			`ret = -EINVAL;`
489			`} else`
490			`ret = -EINVAL;`
491			`} else`
492			`ret = -EINVAL;`
493
494			`return ret;`
495			`}`
496
497			`/* Prototype: int eesoxscsi_proc_info(char buffer, char *start, off_t offset,`
498			`* int length, int host_no, int inout)`
499			`* Purpose : Return information about the driver to a user process accessing`
500			`* the /proc filesystem.`
501			`* Params : buffer - a buffer to write information to`
502			`* start - a pointer into this buffer set by this routine to the start`
503			`* of the required information.`
504			`* offset - offset into information that we have read upto.`
505			`* length - length of buffer`
506			`* host_no - host number to return information for`
507			`* inout - 0 for reading, 1 for writing.`
508			`* Returns : length of data written to buffer.`
509			`*/`
510			`int eesoxscsi_proc_info(char buffer, char *start, off_t offset,`
511			`int length, int host_no, int inout)`
512			`{`
513			`int pos, begin, first;`
514			`struct Scsi_Host *host = scsi_hostlist;`
515			`EESOXScsi_Info *info;`
516			`Scsi_Device *scd;`
517
518			`while (host) {`
519			`if (host->host_no == host_no)`
520			`break;`
521			`host = host->next;`
522			`}`
523			`if (!host)`
524			`return 0;`
525
526			`if (inout == 1)`
527			`return eesoxscsi_set_proc_info(host, buffer, length);`
528
529			`info = (EESOXScsi_Info *)host->hostdata;`
530
531			`begin = 0;`
532			`pos = sprintf(buffer,`
533			`"EESOX SCSI driver version %d.%d.%d\n",`
534			`VER_MAJOR, VER_MINOR, VER_PATCH);`
535			`pos += sprintf(buffer + pos,`
536			`"Address: %08X IRQ : %d DMA : %d\n"`
537			`"FAS : %-10s TERM: %-3s\n\n"`
538			`"Statistics:\n",`
539			`host->io_port, host->irq, host->dma_channel,`
540			`info->info.scsi.type, info->control.control & EESOX_TERM_ENABLE ? "on" : "off");`
541
542			`pos += sprintf(buffer+pos,`
543			`"Queued commands: %-10u Issued commands: %-10u\n"`
544			`"Done commands : %-10u Reads : %-10u\n"`
545			`"Writes : %-10u Others : %-10u\n"`
546			`"Disconnects : %-10u Aborts : %-10u\n"`
547			`"Resets : %-10u\n",`
548			`info->info.stats.queues, info->info.stats.removes,`
549			`info->info.stats.fins, info->info.stats.reads,`
550			`info->info.stats.writes, info->info.stats.miscs,`
551			`info->info.stats.disconnects, info->info.stats.aborts,`
552			`info->info.stats.resets);`
553
554			`first = 1;`
555			`for (scd = scsi_devices; scd; scd = scd->next) {`
556			`if (scd->host == host) {`
557			`int len;`
558
559			`if (first) {`
560			`pos += sprintf(buffer+pos,`
561			`"\nAttached devices:\n");`
562			`first = 0;`
563			`}`
564
565			`proc_print_scsidevice(scd, buffer, &len, pos);`
566			`pos += len;`
567			`pos += sprintf(buffer+pos, "Extensions: ");`
568			`if (scd->tagged_supported)`
569			`pos += sprintf(buffer+pos, "TAG %sabled [%d] ",`
570			`scd->tagged_queue ? "en" : "dis",`
571			`scd->current_tag);`
572			`pos += sprintf(buffer+pos, "\n");`
573
574			`if (pos + begin < offset) {`
575			`begin += pos;`
576			`pos = 0;`
577			`}`
578			`if (pos + begin > offset + length)`
579			`break;`
580			`}`
581			`}`
582
583			`*start = buffer + (offset - begin);`
584			`pos -= offset - begin;`
585			`if (pos > length)`
586			`pos = length;`
587
588			`return pos;`
589			`}`
590
591			`#ifdef MODULE`
592			`Scsi_Host_Template driver_template = EESOXSCSI;`
593
594			`#include "scsi_module.c"`
595			`#endif`