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[/] [or1k_old/] [trunk/] [rc203soc/] [sw/] [uClinux/] [arch/] [armnommu/] [drivers/] [scsi/] [cumana_2.c] - Blame information for rev 1622

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/*
 * linux/arch/arm/drivers/scsi/cumana_2.c
 *
 * Copyright (C) 1997-1998 Russell King
 *
 * Changelog:
 *  30-08-1997  RMK     0.0.0   Created, READONLY version.
 *  22-01-1998  RMK     0.0.1   Updated to 2.1.80.
 *  15-04-1998  RMK     0.0.1   Only do PIO if FAS216 will allow it.
 *  02-05-1998  RMK     0.0.2   Updated & added DMA support.
 *  18-08-1998  RMK     0.0.3   Fixed synchronous transfer depth.
 */
 
#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/dma.h>
#include <asm/ecard.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/pgtable.h>
 
#include "sd.h"
#include "hosts.h"
#include "cumana_2.h"
 
/* Configuration */
#define CUMANASCSI2_XTALFREQ            40
#define CUMANASCSI2_ASYNC_PERIOD        200
#define CUMANASCSI2_SYNC_DEPTH          7
 
/*
 * List of devices that the driver will recognise
 */
#define CUMANASCSI2_LIST                { MANU_CUMANA, PROD_CUMANA_SCSI_2 }
 
#define CUMANASCSI2_STATUS              (0)
#define STATUS_INT                      (1 << 0)
#define STATUS_DRQ                      (1 << 1)
#define STATUS_LATCHED                  (1 << 3)
 
#define CUMANASCSI2_ALATCH              (5)
#define ALATCH_ENA_INT                  (3)
#define ALATCH_DIS_INT                  (2)
#define ALATCH_ENA_TERM                 (5)
#define ALATCH_DIS_TERM                 (4)
#define ALATCH_ENA_BIT32                (11)
#define ALATCH_DIS_BIT32                (10)
#define ALATCH_ENA_DMA                  (13)
#define ALATCH_DIS_DMA                  (12)
#define ALATCH_DMA_OUT                  (15)
#define ALATCH_DMA_IN                   (14)
 
#define CUMANASCSI2_PSEUDODMA           (0x80)
 
#define CUMANASCSI2_FAS216_OFFSET       (0xc0)
#define CUMANASCSI2_FAS216_SHIFT        0
 
/*
 * Version
 */
#define VER_MAJOR       0
#define VER_MINOR       0
#define VER_PATCH       3
 
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_cumanascsi_2 = {
        PROC_SCSI_QLOGICFAS, 6, "cumanascs2",
        S_IFDIR | S_IRUGO | S_IXUGO, 2
};
 
/* Prototype: void cumanascsi_2_irqenable(ec, irqnr)
 * Purpose  : Enable interrupts on Cumana SCSI 2 card
 * Params   : ec    - expansion card structure
 *          : irqnr - interrupt number
 */
static void
cumanascsi_2_irqenable(struct expansion_card *ec, int irqnr)
{
        unsigned int port = (unsigned int)ec->irq_data;
        outb(ALATCH_ENA_INT, port);
}
 
/* Prototype: void cumanascsi_2_irqdisable(ec, irqnr)
 * Purpose  : Disable interrupts on Cumana SCSI 2 card
 * Params   : ec    - expansion card structure
 *          : irqnr - interrupt number
 */
static void
cumanascsi_2_irqdisable(struct expansion_card *ec, int irqnr)
{
        unsigned int port = (unsigned int)ec->irq_data;
        outb(ALATCH_DIS_INT, port);
}
 
static const expansioncard_ops_t cumanascsi_2_ops = {
        cumanascsi_2_irqenable,
        cumanascsi_2_irqdisable,
        NULL,
        NULL,
        NULL,
        NULL
};
 
/* Prototype: void cumanascsi_2_terminator_ctl(host, on_off)
 * Purpose  : Turn the Cumana SCSI 2 terminators on or off
 * Params   : host   - card to turn on/off
 *          : on_off - !0 to turn on, 0 to turn off
 */
static void
cumanascsi_2_terminator_ctl(struct Scsi_Host *host, int on_off)
{
        CumanaScsi2_Info *info = (CumanaScsi2_Info *)host->hostdata;
 
        if (on_off) {
                info->terms = 1;
                outb (ALATCH_ENA_TERM, info->alatch);
        } else {
                info->terms = 0;
                outb (ALATCH_DIS_TERM, info->alatch);
        }
}
 
/* Prototype: void cumanascsi_2_intr(irq, *dev_id, *regs)
 * Purpose  : handle interrupts from Cumana SCSI 2 card
 * Params   : irq    - interrupt number
 *            dev_id - user-defined (Scsi_Host structure)
 *            regs   - processor registers at interrupt
 */
static void
cumanascsi_2_intr(int irq, void *dev_id, struct pt_regs *regs)
{
        struct Scsi_Host *host = (struct Scsi_Host *)dev_id;
 
        fas216_intr(host);
}
 
static void
cumanascsi_2_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 cumanascsi_2_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
cumanascsi_2_dma_setup(struct Scsi_Host *host, Scsi_Pointer *SCp,
                       fasdmadir_t direction, fasdmatype_t min_type)
{
        CumanaScsi2_Info *info = (CumanaScsi2_Info *)host->hostdata;
        int dmach = host->dma_channel;
 
        outb(ALATCH_DIS_DMA, info->alatch);
 
        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;
 
                        cumanascsi_2_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;
                cumanascsi_2_invalidate(SCp->ptr,
                                        SCp->this_residual, direction);
 
                disable_dma(dmach);
                set_dma_sg(dmach, info->dmasg, buf);
                if (direction == DMA_OUT) {
                        outb(ALATCH_DMA_OUT, info->alatch);
                        set_dma_mode(dmach, DMA_MODE_WRITE);
                } else {
                        outb(ALATCH_DMA_IN, info->alatch);
                        set_dma_mode(dmach, DMA_MODE_READ);
                }
                enable_dma(dmach);
                outb(ALATCH_ENA_DMA, info->alatch);
                outb(ALATCH_DIS_BIT32, info->alatch);
                return fasdma_real_all;
        }
 
        /*
         * If we're not doing DMA,
         *  we'll do pseudo DMA
         */
        return fasdma_pio;
}
 
/*
 * Prototype: void cumanascsi_2_dma_pseudo(host, SCpnt, direction, transfer)
 * Purpose  : handles pseudo DMA
 * Params   : host      - host
 *            SCpnt     - command
 *            direction - DMA on to/off of card
 *            transfer  - minimum number of bytes we expect to transfer
 */
static void
cumanascsi_2_dma_pseudo(struct Scsi_Host *host, Scsi_Pointer *SCp,
                        fasdmadir_t direction, int transfer)
{
        CumanaScsi2_Info *info = (CumanaScsi2_Info *)host->hostdata;
        unsigned int length;
        unsigned char *addr;
 
        length = SCp->this_residual;
        addr = SCp->ptr;
 
        if (direction == DMA_OUT)
#if 0
                while (length > 1) {
                        unsigned long word;
                        unsigned int status = inb(info->status);
 
                        if (status & STATUS_INT)
                                goto end;
 
                        if (!(status & STATUS_DRQ))
                                continue;
 
                        word = *addr | *(addr + 1) << 8;
                        outw (info->dmaarea);
                        addr += 2;
                        length -= 2;
                }
#else
                printk ("PSEUDO_OUT???\n");
#endif
        else {
                if (transfer && (transfer & 255)) {
                        while (length >= 256) {
                                unsigned int status = inb(info->status);
 
                                if (status & STATUS_INT)
                                        goto end;
 
                                if (!(status & STATUS_DRQ))
                                        continue;
 
                                insw(info->dmaarea, addr, 256 >> 1);
                                addr += 256;
                                length -= 256;
                        }
                }
 
                while (length > 0) {
                        unsigned long word;
                        unsigned int status = inb(info->status);
 
                        if (status & STATUS_INT)
                                goto end;
 
                        if (!(status & STATUS_DRQ))
                                continue;
 
                        word = inw (info->dmaarea);
                        *addr++ = word;
                        if (--length > 0) {
                                *addr++ = word >> 8;
                                length --;
                        }
                }
        }
 
end:
}
 
/* Prototype: int cumanascsi_2_dma_stop(host, SCpnt)
 * Purpose  : stops DMA/PIO
 * Params   : host  - host
 *            SCpnt - command
 */
static void
cumanascsi_2_dma_stop(struct Scsi_Host *host, Scsi_Pointer *SCp)
{
        CumanaScsi2_Info *info = (CumanaScsi2_Info *)host->hostdata;
        if (host->dma_channel != NO_DMA) {
                outb(ALATCH_DIS_DMA, info->alatch);
                disable_dma(host->dma_channel);
        }
}
 
/* Prototype: int cumanascsi_2_detect(Scsi_Host_Template * tpnt)
 * Purpose  : initialises Cumana SCSI 2 driver
 * Params   : tpnt - template for this SCSI adapter
 * Returns  : >0 if host found, 0 otherwise.
 */
int
cumanascsi_2_detect(Scsi_Host_Template *tpnt)
{
        static const card_ids cumanascsi_2_cids[] =
                        { CUMANASCSI2_LIST, { 0xffff, 0xffff} };
        int count = 0;
        struct Scsi_Host *host;
 
        tpnt->proc_dir = &proc_scsi_cumanascsi_2;
        memset(ecs, 0, sizeof (ecs));
 
        ecard_startfind();
 
        while (1) {
                CumanaScsi2_Info *info;
 
                ecs[count] = ecard_find(0, cumanascsi_2_cids);
                if (!ecs[count])
                        break;
 
                ecard_claim(ecs[count]);
 
                host = scsi_register(tpnt, sizeof (CumanaScsi2_Info));
                if (!host) {
                        ecard_release(ecs[count]);
                        break;
                }
 
                host->io_port = ecard_address(ecs[count], ECARD_MEMC, 0);
                host->irq = ecs[count]->irq;
                host->dma_channel = ecs[count]->dma;
                info = (CumanaScsi2_Info *)host->hostdata;
 
                info->terms                     = term[count] ? 1 : 0;
                cumanascsi_2_terminator_ctl(host, info->terms);
 
                info->info.scsi.io_port         = host->io_port + CUMANASCSI2_FAS216_OFFSET;
                info->info.scsi.io_shift        = CUMANASCSI2_FAS216_SHIFT;
                info->info.scsi.irq             = host->irq;
                info->info.ifcfg.clockrate      = CUMANASCSI2_XTALFREQ;
                info->info.ifcfg.select_timeout = 255;
                info->info.ifcfg.asyncperiod    = CUMANASCSI2_ASYNC_PERIOD;
                info->info.ifcfg.sync_max_depth = CUMANASCSI2_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            = cumanascsi_2_dma_setup;
                info->info.dma.pseudo           = cumanascsi_2_dma_pseudo;
                info->info.dma.stop             = cumanascsi_2_dma_stop;
                info->dmaarea                   = host->io_port + CUMANASCSI2_PSEUDODMA;
                info->status                    = host->io_port + CUMANASCSI2_STATUS;
                info->alatch                    = host->io_port + CUMANASCSI2_ALATCH;
 
                ecs[count]->irqaddr     = (unsigned char *)ioaddr(info->status);
                ecs[count]->irqmask     = STATUS_INT;
                ecs[count]->irq_data    = (void *)info->alatch;
                ecs[count]->ops         = (expansioncard_ops_t *)&cumanascsi_2_ops;
 
                request_region(host->io_port + CUMANASCSI2_FAS216_OFFSET,
                               16 << CUMANASCSI2_FAS216_SHIFT, "cumanascsi2-fas");
 
                if (host->irq != NO_IRQ &&
                    request_irq(host->irq, cumanascsi_2_intr,
                                SA_INTERRUPT, "cumanascsi2", host)) {
                        printk("scsi%d: IRQ%d not free, interrupts disabled\n",
                               host->host_no, host->irq);
                        host->irq = NO_IRQ;
                        info->info.scsi.irq = NO_IRQ;
                }
 
                if (host->dma_channel != NO_DMA &&
                    request_dma(host->dma_channel, "cumanascsi2")) {
                        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 cumanascsi_2_release(struct Scsi_Host * host)
 * Purpose  : releases all resources used by this adapter
 * Params   : host - driver host structure to return info for.
 */
int cumanascsi_2_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 + CUMANASCSI2_FAS216_OFFSET,
                       16 << CUMANASCSI2_FAS216_SHIFT);
 
        for (i = 0; i < MAX_ECARDS; i++)
                if (ecs[i] && host->io_port == ecard_address (ecs[i], ECARD_MEMC, 0))
                        ecard_release (ecs[i]);
        return 0;
}
 
/* Prototype: const char *cumanascsi_2_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 *cumanascsi_2_info(struct Scsi_Host *host)
{
        CumanaScsi2_Info *info = (CumanaScsi2_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->terms ? "on" : "off");
 
        return string;
}
 
/* Prototype: int cumanascsi_2_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
cumanascsi_2_set_proc_info(struct Scsi_Host *host, char *buffer, int length)
{
        int ret = length;
 
        if (length >= 11 && strcmp(buffer, "CUMANASCSI2") == 0) {
                buffer += 11;
                length -= 11;
 
                if (length >= 5 && strncmp(buffer, "term=", 5) == 0) {
                        if (buffer[5] == '1')
                                cumanascsi_2_terminator_ctl(host, 1);
                        else if (buffer[5] == '0')
                                cumanascsi_2_terminator_ctl(host, 0);
                        else
                                ret = -EINVAL;
                } else
                        ret = -EINVAL;
        } else
                ret = -EINVAL;
 
        return ret;
}
 
/* Prototype: int cumanascsi_2_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 cumanascsi_2_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;
        CumanaScsi2_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 cumanascsi_2_set_proc_info(host, buffer, length);
 
        info = (CumanaScsi2_Info *)host->hostdata;
 
        begin = 0;
        pos = sprintf(buffer,
                        "Cumana SCSI II 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->terms ? "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 = CUMANASCSI_2;
 
#include "scsi_module.c"
#endif

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[/] [or1k_old/] [trunk/] [rc203soc/] [sw/] [uClinux/] [arch/] [armnommu/] [drivers/] [scsi/] [cumana_2.c] - Blame information for rev 1622

Line No.	Rev	Author	Line
1	1622	jcastillo	`/*`
2			`* linux/arch/arm/drivers/scsi/cumana_2.c`
3			`*`
4			`* Copyright (C) 1997-1998 Russell King`
5			`*`
6			`* Changelog:`
7			`* 30-08-1997 RMK 0.0.0 Created, READONLY version.`
8			`* 22-01-1998 RMK 0.0.1 Updated to 2.1.80.`
9			`* 15-04-1998 RMK 0.0.1 Only do PIO if FAS216 will allow it.`
10			`* 02-05-1998 RMK 0.0.2 Updated & added DMA support.`
11			`* 18-08-1998 RMK 0.0.3 Fixed synchronous transfer depth.`
12			`*/`
13
14			`#include <linux/module.h>`
15			`#include <linux/blk.h>`
16			`#include <linux/kernel.h>`
17			`#include <linux/string.h>`
18			`#include <linux/ioport.h>`
19			`#include <linux/sched.h>`
20			`#include <linux/proc_fs.h>`
21			`#include <linux/unistd.h>`
22			`#include <linux/stat.h>`
23
24			`#include <asm/delay.h>`
25			`#include <asm/dma.h>`
26			`#include <asm/ecard.h>`
27			`#include <asm/io.h>`
28			`#include <asm/irq.h>`
29			`#include <asm/pgtable.h>`
30
31			`#include "sd.h"`
32			`#include "hosts.h"`
33			`#include "cumana_2.h"`
34
35			`/* Configuration */`
36			`#define CUMANASCSI2_XTALFREQ 40`
37			`#define CUMANASCSI2_ASYNC_PERIOD 200`
38			`#define CUMANASCSI2_SYNC_DEPTH 7`
39
40			`/*`
41			`* List of devices that the driver will recognise`
42			`*/`
43			`#define CUMANASCSI2_LIST { MANU_CUMANA, PROD_CUMANA_SCSI_2 }`
44
45			`#define CUMANASCSI2_STATUS (0)`
46			`#define STATUS_INT (1 << 0)`
47			`#define STATUS_DRQ (1 << 1)`
48			`#define STATUS_LATCHED (1 << 3)`
49
50			`#define CUMANASCSI2_ALATCH (5)`
51			`#define ALATCH_ENA_INT (3)`
52			`#define ALATCH_DIS_INT (2)`
53			`#define ALATCH_ENA_TERM (5)`
54			`#define ALATCH_DIS_TERM (4)`
55			`#define ALATCH_ENA_BIT32 (11)`
56			`#define ALATCH_DIS_BIT32 (10)`
57			`#define ALATCH_ENA_DMA (13)`
58			`#define ALATCH_DIS_DMA (12)`
59			`#define ALATCH_DMA_OUT (15)`
60			`#define ALATCH_DMA_IN (14)`
61
62			`#define CUMANASCSI2_PSEUDODMA (0x80)`
63
64			`#define CUMANASCSI2_FAS216_OFFSET (0xc0)`
65			`#define CUMANASCSI2_FAS216_SHIFT 0`
66
67			`/*`
68			`* Version`
69			`*/`
70			`#define VER_MAJOR 0`
71			`#define VER_MINOR 0`
72			`#define VER_PATCH 3`
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_cumanascsi_2 = {`
82			`PROC_SCSI_QLOGICFAS, 6, "cumanascs2",`
83			`S_IFDIR \| S_IRUGO \| S_IXUGO, 2`
84			`};`
85
86			`/* Prototype: void cumanascsi_2_irqenable(ec, irqnr)`
87			`* Purpose : Enable interrupts on Cumana SCSI 2 card`
88			`* Params : ec - expansion card structure`
89			`* : irqnr - interrupt number`
90			`*/`
91			`static void`
92			`cumanascsi_2_irqenable(struct expansion_card *ec, int irqnr)`
93			`{`
94			`unsigned int port = (unsigned int)ec->irq_data;`
95			`outb(ALATCH_ENA_INT, port);`
96			`}`
97
98			`/* Prototype: void cumanascsi_2_irqdisable(ec, irqnr)`
99			`* Purpose : Disable interrupts on Cumana SCSI 2 card`
100			`* Params : ec - expansion card structure`
101			`* : irqnr - interrupt number`
102			`*/`
103			`static void`
104			`cumanascsi_2_irqdisable(struct expansion_card *ec, int irqnr)`
105			`{`
106			`unsigned int port = (unsigned int)ec->irq_data;`
107			`outb(ALATCH_DIS_INT, port);`
108			`}`
109
110			`static const expansioncard_ops_t cumanascsi_2_ops = {`
111			`cumanascsi_2_irqenable,`
112			`cumanascsi_2_irqdisable,`
113			`NULL,`
114			`NULL,`
115			`NULL,`
116			`NULL`
117			`};`
118
119			`/* Prototype: void cumanascsi_2_terminator_ctl(host, on_off)`
120			`* Purpose : Turn the Cumana SCSI 2 terminators on or off`
121			`* Params : host - card to turn on/off`
122			`* : on_off - !0 to turn on, 0 to turn off`
123			`*/`
124			`static void`
125			`cumanascsi_2_terminator_ctl(struct Scsi_Host *host, int on_off)`
126			`{`
127			`CumanaScsi2_Info info = (CumanaScsi2_Info )host->hostdata;`
128
129			`if (on_off) {`
130			`info->terms = 1;`
131			`outb (ALATCH_ENA_TERM, info->alatch);`
132			`} else {`
133			`info->terms = 0;`
134			`outb (ALATCH_DIS_TERM, info->alatch);`
135			`}`
136			`}`
137
138			`/* Prototype: void cumanascsi_2_intr(irq, dev_id, regs)`
139			`* Purpose : handle interrupts from Cumana SCSI 2 card`
140			`* Params : irq - interrupt number`
141			`* dev_id - user-defined (Scsi_Host structure)`
142			`* regs - processor registers at interrupt`
143			`*/`
144			`static void`
145			`cumanascsi_2_intr(int irq, void dev_id, struct pt_regs regs)`
146			`{`
147			`struct Scsi_Host host = (struct Scsi_Host )dev_id;`
148
149			`fas216_intr(host);`
150			`}`
151
152			`static void`
153			`cumanascsi_2_invalidate(char *addr, long len, fasdmadir_t direction)`
154			`{`
155			`unsigned int page;`
156
157			`if (direction == DMA_OUT) {`
158			`for (page = (unsigned int) addr; len > 0;`
159			`page += PAGE_SIZE, len -= PAGE_SIZE)`
160			`flush_page_to_ram(page);`
161			`} else`
162			`flush_cache_range(current->mm, (unsigned long)addr,`
163			`(unsigned long)addr + len);`
164			`}`
165
166			`/* Prototype: fasdmatype_t cumanascsi_2_dma_setup(host, SCpnt, direction, min_type)`
167			`* Purpose : initialises DMA/PIO`
168			`* Params : host - host`
169			`* SCpnt - command`
170			`* direction - DMA on to/off of card`
171			`* min_type - minimum DMA support that we must have for this transfer`
172			`* Returns : type of transfer to be performed`
173			`*/`
174			`static fasdmatype_t`
175			`cumanascsi_2_dma_setup(struct Scsi_Host host, Scsi_Pointer SCp,`
176			`fasdmadir_t direction, fasdmatype_t min_type)`
177			`{`
178			`CumanaScsi2_Info info = (CumanaScsi2_Info )host->hostdata;`
179			`int dmach = host->dma_channel;`
180
181			`outb(ALATCH_DIS_DMA, info->alatch);`
182
183			`if (dmach != NO_DMA &&`
184			`(min_type == fasdma_real_all \|\| SCp->this_residual >= 512)) {`
185			`int buf;`
186
187			`for (buf = 1; buf <= SCp->buffers_residual &&`
188			`buf < NR_SG; buf++) {`
189			`info->dmasg[buf].address = __virt_to_bus(`
190			`(unsigned long)SCp->buffer[buf].address);`
191			`info->dmasg[buf].length = SCp->buffer[buf].length;`
192
193			`cumanascsi_2_invalidate(SCp->buffer[buf].address,`
194			`SCp->buffer[buf].length,`
195			`direction);`
196			`}`
197
198			`info->dmasg[0].address = __virt_to_phys((unsigned long)SCp->ptr);`
199			`info->dmasg[0].length = SCp->this_residual;`
200			`cumanascsi_2_invalidate(SCp->ptr,`
201			`SCp->this_residual, direction);`
202
203			`disable_dma(dmach);`
204			`set_dma_sg(dmach, info->dmasg, buf);`
205			`if (direction == DMA_OUT) {`
206			`outb(ALATCH_DMA_OUT, info->alatch);`
207			`set_dma_mode(dmach, DMA_MODE_WRITE);`
208			`} else {`
209			`outb(ALATCH_DMA_IN, info->alatch);`
210			`set_dma_mode(dmach, DMA_MODE_READ);`
211			`}`
212			`enable_dma(dmach);`
213			`outb(ALATCH_ENA_DMA, info->alatch);`
214			`outb(ALATCH_DIS_BIT32, info->alatch);`
215			`return fasdma_real_all;`
216			`}`
217
218			`/*`
219			`* If we're not doing DMA,`
220			`* we'll do pseudo DMA`
221			`*/`
222			`return fasdma_pio;`
223			`}`
224
225			`/*`
226			`* Prototype: void cumanascsi_2_dma_pseudo(host, SCpnt, direction, transfer)`
227			`* Purpose : handles pseudo DMA`
228			`* Params : host - host`
229			`* SCpnt - command`
230			`* direction - DMA on to/off of card`
231			`* transfer - minimum number of bytes we expect to transfer`
232			`*/`
233			`static void`
234			`cumanascsi_2_dma_pseudo(struct Scsi_Host host, Scsi_Pointer SCp,`
235			`fasdmadir_t direction, int transfer)`
236			`{`
237			`CumanaScsi2_Info info = (CumanaScsi2_Info )host->hostdata;`
238			`unsigned int length;`
239			`unsigned char *addr;`
240
241			`length = SCp->this_residual;`
242			`addr = SCp->ptr;`
243
244			`if (direction == DMA_OUT)`
245			`#if 0`
246			`while (length > 1) {`
247			`unsigned long word;`
248			`unsigned int status = inb(info->status);`
249
250			`if (status & STATUS_INT)`
251			`goto end;`
252
253			`if (!(status & STATUS_DRQ))`
254			`continue;`
255
256			`word = addr \| (addr + 1) << 8;`
257			`outw (info->dmaarea);`
258			`addr += 2;`
259			`length -= 2;`
260			`}`
261			`#else`
262			`printk ("PSEUDO_OUT???\n");`
263			`#endif`
264			`else {`
265			`if (transfer && (transfer & 255)) {`
266			`while (length >= 256) {`
267			`unsigned int status = inb(info->status);`
268
269			`if (status & STATUS_INT)`
270			`goto end;`
271
272			`if (!(status & STATUS_DRQ))`
273			`continue;`
274
275			`insw(info->dmaarea, addr, 256 >> 1);`
276			`addr += 256;`
277			`length -= 256;`
278			`}`
279			`}`
280
281			`while (length > 0) {`
282			`unsigned long word;`
283			`unsigned int status = inb(info->status);`
284
285			`if (status & STATUS_INT)`
286			`goto end;`
287
288			`if (!(status & STATUS_DRQ))`
289			`continue;`
290
291			`word = inw (info->dmaarea);`
292			`*addr++ = word;`
293			`if (--length > 0) {`
294			`*addr++ = word >> 8;`
295			`length --;`
296			`}`
297			`}`
298			`}`
299
300			`end:`
301			`}`
302
303			`/* Prototype: int cumanascsi_2_dma_stop(host, SCpnt)`
304			`* Purpose : stops DMA/PIO`
305			`* Params : host - host`
306			`* SCpnt - command`
307			`*/`
308			`static void`
309			`cumanascsi_2_dma_stop(struct Scsi_Host host, Scsi_Pointer SCp)`
310			`{`
311			`CumanaScsi2_Info info = (CumanaScsi2_Info )host->hostdata;`
312			`if (host->dma_channel != NO_DMA) {`
313			`outb(ALATCH_DIS_DMA, info->alatch);`
314			`disable_dma(host->dma_channel);`
315			`}`
316			`}`
317
318			`/* Prototype: int cumanascsi_2_detect(Scsi_Host_Template * tpnt)`
319			`* Purpose : initialises Cumana SCSI 2 driver`
320			`* Params : tpnt - template for this SCSI adapter`
321			`* Returns : >0 if host found, 0 otherwise.`
322			`*/`
323			`int`
324			`cumanascsi_2_detect(Scsi_Host_Template *tpnt)`
325			`{`
326			`static const card_ids cumanascsi_2_cids[] =`
327			`{ CUMANASCSI2_LIST, { 0xffff, 0xffff} };`
328			`int count = 0;`
329			`struct Scsi_Host *host;`
330
331			`tpnt->proc_dir = &proc_scsi_cumanascsi_2;`
332			`memset(ecs, 0, sizeof (ecs));`
333
334			`ecard_startfind();`
335
336			`while (1) {`
337			`CumanaScsi2_Info *info;`
338
339			`ecs[count] = ecard_find(0, cumanascsi_2_cids);`
340			`if (!ecs[count])`
341			`break;`
342
343			`ecard_claim(ecs[count]);`
344
345			`host = scsi_register(tpnt, sizeof (CumanaScsi2_Info));`
346			`if (!host) {`
347			`ecard_release(ecs[count]);`
348			`break;`
349			`}`
350
351			`host->io_port = ecard_address(ecs[count], ECARD_MEMC, 0);`
352			`host->irq = ecs[count]->irq;`
353			`host->dma_channel = ecs[count]->dma;`
354			`info = (CumanaScsi2_Info *)host->hostdata;`
355
356			`info->terms = term[count] ? 1 : 0;`
357			`cumanascsi_2_terminator_ctl(host, info->terms);`
358
359			`info->info.scsi.io_port = host->io_port + CUMANASCSI2_FAS216_OFFSET;`
360			`info->info.scsi.io_shift = CUMANASCSI2_FAS216_SHIFT;`
361			`info->info.scsi.irq = host->irq;`
362			`info->info.ifcfg.clockrate = CUMANASCSI2_XTALFREQ;`
363			`info->info.ifcfg.select_timeout = 255;`
364			`info->info.ifcfg.asyncperiod = CUMANASCSI2_ASYNC_PERIOD;`
365			`info->info.ifcfg.sync_max_depth = CUMANASCSI2_SYNC_DEPTH;`
366			`info->info.ifcfg.cntl3 = CNTL3_BS8 \| CNTL3_FASTSCSI \| CNTL3_FASTCLK;`
367			`info->info.ifcfg.disconnect_ok = 1;`
368			`info->info.ifcfg.wide_max_size = 0;`
369			`info->info.dma.setup = cumanascsi_2_dma_setup;`
370			`info->info.dma.pseudo = cumanascsi_2_dma_pseudo;`
371			`info->info.dma.stop = cumanascsi_2_dma_stop;`
372			`info->dmaarea = host->io_port + CUMANASCSI2_PSEUDODMA;`
373			`info->status = host->io_port + CUMANASCSI2_STATUS;`
374			`info->alatch = host->io_port + CUMANASCSI2_ALATCH;`
375
376			`ecs[count]->irqaddr = (unsigned char *)ioaddr(info->status);`
377			`ecs[count]->irqmask = STATUS_INT;`
378			`ecs[count]->irq_data = (void *)info->alatch;`
379			`ecs[count]->ops = (expansioncard_ops_t *)&cumanascsi_2_ops;`
380
381			`request_region(host->io_port + CUMANASCSI2_FAS216_OFFSET,`
382			`16 << CUMANASCSI2_FAS216_SHIFT, "cumanascsi2-fas");`
383
384			`if (host->irq != NO_IRQ &&`
385			`request_irq(host->irq, cumanascsi_2_intr,`
386			`SA_INTERRUPT, "cumanascsi2", host)) {`
387			`printk("scsi%d: IRQ%d not free, interrupts disabled\n",`
388			`host->host_no, host->irq);`
389			`host->irq = NO_IRQ;`
390			`info->info.scsi.irq = NO_IRQ;`
391			`}`
392
393			`if (host->dma_channel != NO_DMA &&`
394			`request_dma(host->dma_channel, "cumanascsi2")) {`
395			`printk("scsi%d: DMA%d not free, DMA disabled\n",`
396			`host->host_no, host->dma_channel);`
397			`host->dma_channel = NO_DMA;`
398			`}`
399
400			`fas216_init(host);`
401			`++count;`
402			`}`
403			`return count;`
404			`}`
405
406			`/* Prototype: int cumanascsi_2_release(struct Scsi_Host * host)`
407			`* Purpose : releases all resources used by this adapter`
408			`* Params : host - driver host structure to return info for.`
409			`*/`
410			`int cumanascsi_2_release(struct Scsi_Host *host)`
411			`{`
412			`int i;`
413
414			`fas216_release(host);`
415
416			`if (host->irq != NO_IRQ)`
417			`free_irq(host->irq, host);`
418			`if (host->dma_channel != NO_DMA)`
419			`free_dma(host->dma_channel);`
420			`release_region(host->io_port + CUMANASCSI2_FAS216_OFFSET,`
421			`16 << CUMANASCSI2_FAS216_SHIFT);`
422
423			`for (i = 0; i < MAX_ECARDS; i++)`
424			`if (ecs[i] && host->io_port == ecard_address (ecs[i], ECARD_MEMC, 0))`
425			`ecard_release (ecs[i]);`
426			`return 0;`
427			`}`
428
429			`/* Prototype: const char cumanascsi_2_info(struct Scsi_Host host)`
430			`* Purpose : returns a descriptive string about this interface,`
431			`* Params : host - driver host structure to return info for.`
432			`* Returns : pointer to a static buffer containing null terminated string.`
433			`*/`
434			`const char cumanascsi_2_info(struct Scsi_Host host)`
435			`{`
436			`CumanaScsi2_Info info = (CumanaScsi2_Info )host->hostdata;`
437			`static char string[100], *p;`
438
439			`p = string;`
440			`p += sprintf(string, "%s at port %X ",`
441			`host->hostt->name, host->io_port);`
442
443			`if (host->irq != NO_IRQ)`
444			`p += sprintf(p, "irq %d ", host->irq);`
445			`else`
446			`p += sprintf(p, "NO IRQ ");`
447
448			`if (host->dma_channel != NO_DMA)`
449			`p += sprintf(p, "dma %d ", host->dma_channel);`
450			`else`
451			`p += sprintf(p, "NO DMA ");`
452
453			`p += sprintf(p, "v%d.%d.%d scsi %s",`
454			`VER_MAJOR, VER_MINOR, VER_PATCH,`
455			`info->info.scsi.type);`
456
457			`p += sprintf(p, " terminators %s",`
458			`info->terms ? "on" : "off");`
459
460			`return string;`
461			`}`
462
463			`/* Prototype: int cumanascsi_2_set_proc_info(struct Scsi_Host host, char buffer, int length)`
464			`* Purpose : Set a driver specific function`
465			`* Params : host - host to setup`
466			`* : buffer - buffer containing string describing operation`
467			`* : length - length of string`
468			`* Returns : -EINVAL, or 0`
469			`*/`
470			`static int`
471			`cumanascsi_2_set_proc_info(struct Scsi_Host host, char buffer, int length)`
472			`{`
473			`int ret = length;`
474
475			`if (length >= 11 && strcmp(buffer, "CUMANASCSI2") == 0) {`
476			`buffer += 11;`
477			`length -= 11;`
478
479			`if (length >= 5 && strncmp(buffer, "term=", 5) == 0) {`
480			`if (buffer[5] == '1')`
481			`cumanascsi_2_terminator_ctl(host, 1);`
482			`else if (buffer[5] == '0')`
483			`cumanascsi_2_terminator_ctl(host, 0);`
484			`else`
485			`ret = -EINVAL;`
486			`} else`
487			`ret = -EINVAL;`
488			`} else`
489			`ret = -EINVAL;`
490
491			`return ret;`
492			`}`
493
494			`/* Prototype: int cumanascsi_2_proc_info(char buffer, char *start, off_t offset,`
495			`* int length, int host_no, int inout)`
496			`* Purpose : Return information about the driver to a user process accessing`
497			`* the /proc filesystem.`
498			`* Params : buffer - a buffer to write information to`
499			`* start - a pointer into this buffer set by this routine to the start`
500			`* of the required information.`
501			`* offset - offset into information that we have read upto.`
502			`* length - length of buffer`
503			`* host_no - host number to return information for`
504			`* inout - 0 for reading, 1 for writing.`
505			`* Returns : length of data written to buffer.`
506			`*/`
507			`int cumanascsi_2_proc_info (char buffer, char *start, off_t offset,`
508			`int length, int host_no, int inout)`
509			`{`
510			`int pos, begin, first;`
511			`struct Scsi_Host *host = scsi_hostlist;`
512			`CumanaScsi2_Info *info;`
513			`Scsi_Device *scd;`
514
515			`while (host) {`
516			`if (host->host_no == host_no)`
517			`break;`
518			`host = host->next;`
519			`}`
520			`if (!host)`
521			`return 0;`
522
523			`if (inout == 1)`
524			`return cumanascsi_2_set_proc_info(host, buffer, length);`
525
526			`info = (CumanaScsi2_Info *)host->hostdata;`
527
528			`begin = 0;`
529			`pos = sprintf(buffer,`
530			`"Cumana SCSI II driver version %d.%d.%d\n",`
531			`VER_MAJOR, VER_MINOR, VER_PATCH);`
532			`pos += sprintf(buffer + pos,`
533			`"Address: %08X IRQ : %d DMA : %d\n"`
534			`"FAS : %-10s TERM: %-3s\n\n"`
535			`"Statistics:\n",`
536			`host->io_port, host->irq, host->dma_channel,`
537			`info->info.scsi.type, info->terms ? "on" : "off");`
538
539			`pos += sprintf(buffer+pos,`
540			`"Queued commands: %-10u Issued commands: %-10u\n"`
541			`"Done commands : %-10u Reads : %-10u\n"`
542			`"Writes : %-10u Others : %-10u\n"`
543			`"Disconnects : %-10u Aborts : %-10u\n"`
544			`"Resets : %-10u\n",`
545			`info->info.stats.queues, info->info.stats.removes,`
546			`info->info.stats.fins, info->info.stats.reads,`
547			`info->info.stats.writes, info->info.stats.miscs,`
548			`info->info.stats.disconnects, info->info.stats.aborts,`
549			`info->info.stats.resets);`
550
551			`first = 1;`
552			`for (scd = scsi_devices; scd; scd = scd->next) {`
553			`if (scd->host == host) {`
554			`int len;`
555
556			`if (first) {`
557			`pos += sprintf(buffer+pos,`
558			`"\nAttached devices:\n");`
559			`first = 0;`
560			`}`
561
562			`proc_print_scsidevice(scd, buffer, &len, pos);`
563			`pos += len;`
564			`pos += sprintf(buffer+pos, "Extensions: ");`
565			`if (scd->tagged_supported)`
566			`pos += sprintf(buffer+pos, "TAG %sabled [%d] ",`
567			`scd->tagged_queue ? "en" : "dis",`
568			`scd->current_tag);`
569			`pos += sprintf(buffer+pos, "\n");`
570
571			`if (pos + begin < offset) {`
572			`begin += pos;`
573			`pos = 0;`
574			`}`
575			`if (pos + begin > offset + length)`
576			`break;`
577			`}`
578			`}`
579
580			`*start = buffer + (offset - begin);`
581			`pos -= offset - begin;`
582			`if (pos > length)`
583			`pos = length;`
584
585			`return pos;`
586			`}`
587
588			`#ifdef MODULE`
589			`Scsi_Host_Template driver_template = CUMANASCSI_2;`
590
591			`#include "scsi_module.c"`
592			`#endif`