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

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/*
 * linux/arch/arm/drivers/scsi/powertec.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     Added DMA support and hardware definitions.
 *  15-04-1998  RMK     Only do PIO if FAS216 will allow it.
 *  02-05-1998  RMK     Moved DMA sg list into per-interface structure.
 */
 
#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 "powertec.h"
 
/* Configuration */
#define POWERTEC_XTALFREQ       40
#define POWERTEC_ASYNC_PERIOD   200
#define POWERTEC_SYNC_DEPTH     7
 
/*
 * List of devices that the driver will recognise
 */
#define POWERTECSCSI_LIST       { MANU_ALSYSTEMS, PROD_ALSYS_SCSIATAPI }
 
#define POWERTEC_FAS216_OFFSET  0xc00
#define POWERTEC_FAS216_SHIFT   4
 
#define POWERTEC_INTR_STATUS    0x800
#define POWERTEC_INTR_BIT       0x80
 
#define POWERTEC_RESET_CONTROL  0x406
#define POWERTEC_RESET_BIT      1
 
#define POWERTEC_TERM_CONTROL   0x806
#define POWERTEC_TERM_ENABLE    1
 
#define POWERTEC_INTR_CONTROL   0x407
#define POWERTEC_INTR_ENABLE    1
#define POWERTEC_INTR_DISABLE   0
 
/*
 * 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_powertec = {
        PROC_SCSI_QLOGICISP, 8, "powertec",
        S_IFDIR | S_IRUGO | S_IXUGO, 2
};
 
/* Prototype: void powertecscsi_irqenable(ec, irqnr)
 * Purpose  : Enable interrupts on Powertec SCSI card
 * Params   : ec    - expansion card structure
 *          : irqnr - interrupt number
 */
static void
powertecscsi_irqenable(struct expansion_card *ec, int irqnr)
{
        unsigned int port = (unsigned int)ec->irq_data;
        outb(POWERTEC_INTR_ENABLE, port);
}
 
/* Prototype: void powertecscsi_irqdisable(ec, irqnr)
 * Purpose  : Disable interrupts on Powertec SCSI card
 * Params   : ec    - expansion card structure
 *          : irqnr - interrupt number
 */
static void
powertecscsi_irqdisable(struct expansion_card *ec, int irqnr)
{
        unsigned int port = (unsigned int)ec->irq_data;
        outb(POWERTEC_INTR_DISABLE, port);
}
 
static const expansioncard_ops_t powertecscsi_ops = {
        powertecscsi_irqenable,
        powertecscsi_irqdisable,
        NULL,
        NULL,
        NULL,
        NULL
};
 
/* Prototype: void powertecscsi_terminator_ctl(host, on_off)
 * Purpose  : Turn the Powertec SCSI terminators on or off
 * Params   : host   - card to turn on/off
 *          : on_off - !0 to turn on, 0 to turn off
 */
static void
powertecscsi_terminator_ctl(struct Scsi_Host *host, int on_off)
{
        PowerTecScsi_Info *info = (PowerTecScsi_Info *)host->hostdata;
 
        if (on_off)
                info->control.terms = POWERTEC_TERM_ENABLE;
        else
                info->control.terms = 0;
 
        outb(info->control.terms, info->control.term_port);
}
 
/* Prototype: void powertecscsi_intr(irq, *dev_id, *regs)
 * Purpose  : handle interrupts from Powertec SCSI card
 * Params   : irq    - interrupt number
 *            dev_id - user-defined (Scsi_Host structure)
 *            regs   - processor registers at interrupt
 */
static void
powertecscsi_intr(int irq, void *dev_id, struct pt_regs *regs)
{
        struct Scsi_Host *host = (struct Scsi_Host *)dev_id;
 
        fas216_intr(host);
}
 
static void
powertecscsi_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 powertecscsi_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
powertecscsi_dma_setup(struct Scsi_Host *host, Scsi_Pointer *SCp,
                       fasdmadir_t direction, fasdmatype_t min_type)
{
        PowerTecScsi_Info *info = (PowerTecScsi_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;
 
                        powertecscsi_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;
                powertecscsi_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;
        }
 
        /*
         * If we're not doing DMA,
         *  we'll do slow PIO
         */
        return fasdma_pio;
}
 
/* Prototype: int powertecscsi_dma_stop(host, SCpnt)
 * Purpose  : stops DMA/PIO
 * Params   : host  - host
 *            SCpnt - command
 */
static void
powertecscsi_dma_stop(struct Scsi_Host *host, Scsi_Pointer *SCp)
{
        if (host->dma_channel != NO_DMA)
                disable_dma(host->dma_channel);
}
 
/* Prototype: int powertecscsi_detect(Scsi_Host_Template * tpnt)
 * Purpose  : initialises PowerTec SCSI driver
 * Params   : tpnt - template for this SCSI adapter
 * Returns  : >0 if host found, 0 otherwise.
 */
int
powertecscsi_detect(Scsi_Host_Template *tpnt)
{
        static const card_ids powertecscsi_cids[] =
                        { POWERTECSCSI_LIST, { 0xffff, 0xffff} };
        int count = 0;
        struct Scsi_Host *host;
 
        tpnt->proc_dir = &proc_scsi_powertec;
        memset(ecs, 0, sizeof (ecs));
 
        ecard_startfind();
 
        while (1) {
                PowerTecScsi_Info *info;
 
                ecs[count] = ecard_find(0, powertecscsi_cids);
                if (!ecs[count])
                        break;
 
                ecard_claim(ecs[count]);
 
                host = scsi_register(tpnt, sizeof (PowerTecScsi_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 = (PowerTecScsi_Info *)host->hostdata;
 
                info->control.term_port = host->io_port + POWERTEC_TERM_CONTROL;
                info->control.terms = term[count] ? POWERTEC_TERM_ENABLE : 0;
                powertecscsi_terminator_ctl(host, info->control.terms);
 
                info->info.scsi.io_port =
                                host->io_port + POWERTEC_FAS216_OFFSET;
                info->info.scsi.io_shift= POWERTEC_FAS216_SHIFT;
                info->info.scsi.irq             = host->irq;
                info->info.ifcfg.clockrate      = POWERTEC_XTALFREQ;
                info->info.ifcfg.select_timeout = 255;
                info->info.ifcfg.asyncperiod    = POWERTEC_ASYNC_PERIOD;
                info->info.ifcfg.sync_max_depth = POWERTEC_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            = powertecscsi_dma_setup;
                info->info.dma.pseudo           = NULL;
                info->info.dma.stop             = powertecscsi_dma_stop;
 
                ecs[count]->irqaddr     = (unsigned char *)
                            ioaddr(host->io_port + POWERTEC_INTR_STATUS);
                ecs[count]->irqmask     = POWERTEC_INTR_BIT;
                ecs[count]->irq_data    = (void *)
                            (host->io_port + POWERTEC_INTR_CONTROL);
                ecs[count]->ops         = (expansioncard_ops_t *)&powertecscsi_ops;
 
                request_region(host->io_port + POWERTEC_FAS216_OFFSET,
                               16 << POWERTEC_FAS216_SHIFT, "powertec2-fas");
 
                if (host->irq != NO_IRQ &&
                    request_irq(host->irq, powertecscsi_intr,
                                SA_INTERRUPT, "powertec", 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, "powertec")) {
                        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 powertecscsi_release(struct Scsi_Host * host)
 * Purpose  : releases all resources used by this adapter
 * Params   : host - driver host structure to return info for.
 */
int powertecscsi_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 + POWERTEC_FAS216_OFFSET,
                       16 << POWERTEC_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 *powertecscsi_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 *powertecscsi_info(struct Scsi_Host *host)
{
        PowerTecScsi_Info *info = (PowerTecScsi_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.terms ? "on" : "off");
 
        return string;
}
 
/* Prototype: int powertecscsi_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
powertecscsi_set_proc_info(struct Scsi_Host *host, char *buffer, int length)
{
        int ret = length;
 
        if (length >= 12 && strncmp(buffer, "POWERTECSCSI", 12) == 0) {
                buffer += 12;
                length -= 12;
 
                if (length >= 5 && strncmp(buffer, "term=", 5) == 0) {
                        if (buffer[5] == '1')
                                powertecscsi_terminator_ctl(host, 1);
                        else if (buffer[5] == '0')
                                powertecscsi_terminator_ctl(host, 0);
                        else
                                ret = -EINVAL;
                } else
                        ret = -EINVAL;
        } else
                ret = -EINVAL;
 
        return ret;
}
 
/* Prototype: int powertecscsi_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 powertecscsi_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;
        PowerTecScsi_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 powertecscsi_set_proc_info(host, buffer, length);
 
        info = (PowerTecScsi_Info *)host->hostdata;
 
        begin = 0;
        pos = sprintf(buffer,
                        "PowerTec 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.terms ? "on" : "off");
 
        pos += fas216_print_stats(&info->info, buffer + pos);
 
        first = 1;
        pos += sprintf(buffer+pos, "\nAttached devices:");
 
        for (scd = scsi_devices; scd; scd = scd->next) {
                if (scd->host == host) {
                        if (first) {
                                pos += sprintf(buffer+pos, "\n");
                                first = 0;
                        }
 
                        pos += fas216_print_device(&info->info, scd, buffer + pos);
 
                        if (pos + begin < offset) {
                                begin += pos;
                                pos = 0;
                        }
                        if (pos + begin > offset + length)
                                break;
                }
        }
 
        if (first)
                pos += sprintf(buffer + pos, " none\n");
 
        *start = buffer + (offset - begin);
        pos -= offset - begin;
        if (pos > length)
                pos = length;
 
        return pos;
}
 
#ifdef MODULE
Scsi_Host_Template driver_template = POWERTECSCSI;
 
#include "scsi_module.c"
#endif

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

Line No.	Rev	Author	Line
1	1622	jcastillo	`/*`
2			`* linux/arch/arm/drivers/scsi/powertec.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 Added DMA support and hardware definitions.`
13			`* 15-04-1998 RMK Only do PIO if FAS216 will allow it.`
14			`* 02-05-1998 RMK Moved DMA sg list into per-interface structure.`
15			`*/`
16
17			`#include <linux/module.h>`
18			`#include <linux/blk.h>`
19			`#include <linux/kernel.h>`
20			`#include <linux/string.h>`
21			`#include <linux/ioport.h>`
22			`#include <linux/sched.h>`
23			`#include <linux/proc_fs.h>`
24			`#include <linux/unistd.h>`
25			`#include <linux/stat.h>`
26
27			`#include <asm/delay.h>`
28			`#include <asm/dma.h>`
29			`#include <asm/ecard.h>`
30			`#include <asm/io.h>`
31			`#include <asm/irq.h>`
32			`#include <asm/pgtable.h>`
33
34			`#include "sd.h"`
35			`#include "hosts.h"`
36			`#include "powertec.h"`
37
38			`/* Configuration */`
39			`#define POWERTEC_XTALFREQ 40`
40			`#define POWERTEC_ASYNC_PERIOD 200`
41			`#define POWERTEC_SYNC_DEPTH 7`
42
43			`/*`
44			`* List of devices that the driver will recognise`
45			`*/`
46			`#define POWERTECSCSI_LIST { MANU_ALSYSTEMS, PROD_ALSYS_SCSIATAPI }`
47
48			`#define POWERTEC_FAS216_OFFSET 0xc00`
49			`#define POWERTEC_FAS216_SHIFT 4`
50
51			`#define POWERTEC_INTR_STATUS 0x800`
52			`#define POWERTEC_INTR_BIT 0x80`
53
54			`#define POWERTEC_RESET_CONTROL 0x406`
55			`#define POWERTEC_RESET_BIT 1`
56
57			`#define POWERTEC_TERM_CONTROL 0x806`
58			`#define POWERTEC_TERM_ENABLE 1`
59
60			`#define POWERTEC_INTR_CONTROL 0x407`
61			`#define POWERTEC_INTR_ENABLE 1`
62			`#define POWERTEC_INTR_DISABLE 0`
63
64			`/*`
65			`* Version`
66			`*/`
67			`#define VER_MAJOR 0`
68			`#define VER_MINOR 0`
69			`#define VER_PATCH 2`
70
71			`static struct expansion_card *ecs[MAX_ECARDS];`
72
73			`/*`
74			`* Use term=0,1,0,0,0 to turn terminators on/off`
75			`*/`
76			`int term[MAX_ECARDS] = { 1, 1, 1, 1, 1, 1, 1, 1 };`
77
78			`static struct proc_dir_entry proc_scsi_powertec = {`
79			`PROC_SCSI_QLOGICISP, 8, "powertec",`
80			`S_IFDIR \| S_IRUGO \| S_IXUGO, 2`
81			`};`
82
83			`/* Prototype: void powertecscsi_irqenable(ec, irqnr)`
84			`* Purpose : Enable interrupts on Powertec SCSI card`
85			`* Params : ec - expansion card structure`
86			`* : irqnr - interrupt number`
87			`*/`
88			`static void`
89			`powertecscsi_irqenable(struct expansion_card *ec, int irqnr)`
90			`{`
91			`unsigned int port = (unsigned int)ec->irq_data;`
92			`outb(POWERTEC_INTR_ENABLE, port);`
93			`}`
94
95			`/* Prototype: void powertecscsi_irqdisable(ec, irqnr)`
96			`* Purpose : Disable interrupts on Powertec SCSI card`
97			`* Params : ec - expansion card structure`
98			`* : irqnr - interrupt number`
99			`*/`
100			`static void`
101			`powertecscsi_irqdisable(struct expansion_card *ec, int irqnr)`
102			`{`
103			`unsigned int port = (unsigned int)ec->irq_data;`
104			`outb(POWERTEC_INTR_DISABLE, port);`
105			`}`
106
107			`static const expansioncard_ops_t powertecscsi_ops = {`
108			`powertecscsi_irqenable,`
109			`powertecscsi_irqdisable,`
110			`NULL,`
111			`NULL,`
112			`NULL,`
113			`NULL`
114			`};`
115
116			`/* Prototype: void powertecscsi_terminator_ctl(host, on_off)`
117			`* Purpose : Turn the Powertec SCSI terminators on or off`
118			`* Params : host - card to turn on/off`
119			`* : on_off - !0 to turn on, 0 to turn off`
120			`*/`
121			`static void`
122			`powertecscsi_terminator_ctl(struct Scsi_Host *host, int on_off)`
123			`{`
124			`PowerTecScsi_Info info = (PowerTecScsi_Info )host->hostdata;`
125
126			`if (on_off)`
127			`info->control.terms = POWERTEC_TERM_ENABLE;`
128			`else`
129			`info->control.terms = 0;`
130
131			`outb(info->control.terms, info->control.term_port);`
132			`}`
133
134			`/* Prototype: void powertecscsi_intr(irq, dev_id, regs)`
135			`* Purpose : handle interrupts from Powertec SCSI card`
136			`* Params : irq - interrupt number`
137			`* dev_id - user-defined (Scsi_Host structure)`
138			`* regs - processor registers at interrupt`
139			`*/`
140			`static void`
141			`powertecscsi_intr(int irq, void dev_id, struct pt_regs regs)`
142			`{`
143			`struct Scsi_Host host = (struct Scsi_Host )dev_id;`
144
145			`fas216_intr(host);`
146			`}`
147
148			`static void`
149			`powertecscsi_invalidate(char *addr, long len, fasdmadir_t direction)`
150			`{`
151			`unsigned int page;`
152
153			`if (direction == DMA_OUT) {`
154			`for (page = (unsigned int) addr; len > 0;`
155			`page += PAGE_SIZE, len -= PAGE_SIZE)`
156			`flush_page_to_ram(page);`
157			`} else`
158			`flush_cache_range(current->mm, (unsigned long)addr,`
159			`(unsigned long)addr + len);`
160			`}`
161
162			`/* Prototype: fasdmatype_t powertecscsi_dma_setup(host, SCpnt, direction, min_type)`
163			`* Purpose : initialises DMA/PIO`
164			`* Params : host - host`
165			`* SCpnt - command`
166			`* direction - DMA on to/off of card`
167			`* min_type - minimum DMA support that we must have for this transfer`
168			`* Returns : type of transfer to be performed`
169			`*/`
170			`static fasdmatype_t`
171			`powertecscsi_dma_setup(struct Scsi_Host host, Scsi_Pointer SCp,`
172			`fasdmadir_t direction, fasdmatype_t min_type)`
173			`{`
174			`PowerTecScsi_Info info = (PowerTecScsi_Info )host->hostdata;`
175			`int dmach = host->dma_channel;`
176
177			`if (dmach != NO_DMA &&`
178			`(min_type == fasdma_real_all \|\| SCp->this_residual >= 512)) {`
179			`int buf;`
180
181			`for (buf = 1; buf <= SCp->buffers_residual &&`
182			`buf < NR_SG; buf++) {`
183			`info->dmasg[buf].address = __virt_to_bus(`
184			`(unsigned long)SCp->buffer[buf].address);`
185			`info->dmasg[buf].length = SCp->buffer[buf].length;`
186
187			`powertecscsi_invalidate(SCp->buffer[buf].address,`
188			`SCp->buffer[buf].length,`
189			`direction);`
190			`}`
191
192			`info->dmasg[0].address = __virt_to_phys((unsigned long)SCp->ptr);`
193			`info->dmasg[0].length = SCp->this_residual;`
194			`powertecscsi_invalidate(SCp->ptr,`
195			`SCp->this_residual, direction);`
196
197			`disable_dma(dmach);`
198			`set_dma_sg(dmach, info->dmasg, buf);`
199			`set_dma_mode(dmach,`
200			`direction == DMA_OUT ? DMA_MODE_WRITE :`
201			`DMA_MODE_READ);`
202			`enable_dma(dmach);`
203			`return fasdma_real_all;`
204			`}`
205
206			`/*`
207			`* If we're not doing DMA,`
208			`* we'll do slow PIO`
209			`*/`
210			`return fasdma_pio;`
211			`}`
212
213			`/* Prototype: int powertecscsi_dma_stop(host, SCpnt)`
214			`* Purpose : stops DMA/PIO`
215			`* Params : host - host`
216			`* SCpnt - command`
217			`*/`
218			`static void`
219			`powertecscsi_dma_stop(struct Scsi_Host host, Scsi_Pointer SCp)`
220			`{`
221			`if (host->dma_channel != NO_DMA)`
222			`disable_dma(host->dma_channel);`
223			`}`
224
225			`/* Prototype: int powertecscsi_detect(Scsi_Host_Template * tpnt)`
226			`* Purpose : initialises PowerTec SCSI driver`
227			`* Params : tpnt - template for this SCSI adapter`
228			`* Returns : >0 if host found, 0 otherwise.`
229			`*/`
230			`int`
231			`powertecscsi_detect(Scsi_Host_Template *tpnt)`
232			`{`
233			`static const card_ids powertecscsi_cids[] =`
234			`{ POWERTECSCSI_LIST, { 0xffff, 0xffff} };`
235			`int count = 0;`
236			`struct Scsi_Host *host;`
237
238			`tpnt->proc_dir = &proc_scsi_powertec;`
239			`memset(ecs, 0, sizeof (ecs));`
240
241			`ecard_startfind();`
242
243			`while (1) {`
244			`PowerTecScsi_Info *info;`
245
246			`ecs[count] = ecard_find(0, powertecscsi_cids);`
247			`if (!ecs[count])`
248			`break;`
249
250			`ecard_claim(ecs[count]);`
251
252			`host = scsi_register(tpnt, sizeof (PowerTecScsi_Info));`
253			`if (!host) {`
254			`ecard_release(ecs[count]);`
255			`break;`
256			`}`
257
258			`host->io_port = ecard_address(ecs[count], ECARD_IOC, ECARD_FAST);`
259			`host->irq = ecs[count]->irq;`
260			`host->dma_channel = ecs[count]->dma;`
261			`info = (PowerTecScsi_Info *)host->hostdata;`
262
263			`info->control.term_port = host->io_port + POWERTEC_TERM_CONTROL;`
264			`info->control.terms = term[count] ? POWERTEC_TERM_ENABLE : 0;`
265			`powertecscsi_terminator_ctl(host, info->control.terms);`
266
267			`info->info.scsi.io_port =`
268			`host->io_port + POWERTEC_FAS216_OFFSET;`
269			`info->info.scsi.io_shift= POWERTEC_FAS216_SHIFT;`
270			`info->info.scsi.irq = host->irq;`
271			`info->info.ifcfg.clockrate = POWERTEC_XTALFREQ;`
272			`info->info.ifcfg.select_timeout = 255;`
273			`info->info.ifcfg.asyncperiod = POWERTEC_ASYNC_PERIOD;`
274			`info->info.ifcfg.sync_max_depth = POWERTEC_SYNC_DEPTH;`
275			`info->info.ifcfg.cntl3 = /CNTL3_BS8 \|/ CNTL3_FASTSCSI \| CNTL3_FASTCLK;`
276			`info->info.ifcfg.disconnect_ok = 1;`
277			`info->info.ifcfg.wide_max_size = 0;`
278			`info->info.dma.setup = powertecscsi_dma_setup;`
279			`info->info.dma.pseudo = NULL;`
280			`info->info.dma.stop = powertecscsi_dma_stop;`
281
282			`ecs[count]->irqaddr = (unsigned char *)`
283			`ioaddr(host->io_port + POWERTEC_INTR_STATUS);`
284			`ecs[count]->irqmask = POWERTEC_INTR_BIT;`
285			`ecs[count]->irq_data = (void *)`
286			`(host->io_port + POWERTEC_INTR_CONTROL);`
287			`ecs[count]->ops = (expansioncard_ops_t *)&powertecscsi_ops;`
288
289			`request_region(host->io_port + POWERTEC_FAS216_OFFSET,`
290			`16 << POWERTEC_FAS216_SHIFT, "powertec2-fas");`
291
292			`if (host->irq != NO_IRQ &&`
293			`request_irq(host->irq, powertecscsi_intr,`
294			`SA_INTERRUPT, "powertec", host)) {`
295			`printk("scsi%d: IRQ%d not free, interrupts disabled\n",`
296			`host->host_no, host->irq);`
297			`host->irq = NO_IRQ;`
298			`info->info.scsi.irq = NO_IRQ;`
299			`}`
300
301			`if (host->dma_channel != NO_DMA &&`
302			`request_dma(host->dma_channel, "powertec")) {`
303			`printk("scsi%d: DMA%d not free, DMA disabled\n",`
304			`host->host_no, host->dma_channel);`
305			`host->dma_channel = NO_DMA;`
306			`}`
307
308			`fas216_init(host);`
309			`++count;`
310			`}`
311			`return count;`
312			`}`
313
314			`/* Prototype: int powertecscsi_release(struct Scsi_Host * host)`
315			`* Purpose : releases all resources used by this adapter`
316			`* Params : host - driver host structure to return info for.`
317			`*/`
318			`int powertecscsi_release(struct Scsi_Host *host)`
319			`{`
320			`int i;`
321
322			`fas216_release(host);`
323
324			`if (host->irq != NO_IRQ)`
325			`free_irq(host->irq, host);`
326			`if (host->dma_channel != NO_DMA)`
327			`free_dma(host->dma_channel);`
328			`release_region(host->io_port + POWERTEC_FAS216_OFFSET,`
329			`16 << POWERTEC_FAS216_SHIFT);`
330
331			`for (i = 0; i < MAX_ECARDS; i++)`
332			`if (ecs[i] &&`
333			`host->io_port == ecard_address(ecs[i], ECARD_IOC, ECARD_FAST))`
334			`ecard_release(ecs[i]);`
335			`return 0;`
336			`}`
337
338			`/* Prototype: const char powertecscsi_info(struct Scsi_Host host)`
339			`* Purpose : returns a descriptive string about this interface,`
340			`* Params : host - driver host structure to return info for.`
341			`* Returns : pointer to a static buffer containing null terminated string.`
342			`*/`
343			`const char powertecscsi_info(struct Scsi_Host host)`
344			`{`
345			`PowerTecScsi_Info info = (PowerTecScsi_Info )host->hostdata;`
346			`static char string[100], *p;`
347
348			`p = string;`
349			`p += sprintf(string, "%s at port %X ",`
350			`host->hostt->name, host->io_port);`
351
352			`if (host->irq != NO_IRQ)`
353			`p += sprintf(p, "irq %d ", host->irq);`
354			`else`
355			`p += sprintf(p, "NO IRQ ");`
356
357			`if (host->dma_channel != NO_DMA)`
358			`p += sprintf(p, "dma %d ", host->dma_channel);`
359			`else`
360			`p += sprintf(p, "NO DMA ");`
361
362			`p += sprintf(p, "v%d.%d.%d scsi %s",`
363			`VER_MAJOR, VER_MINOR, VER_PATCH,`
364			`info->info.scsi.type);`
365
366			`p += sprintf(p, " terminators %s",`
367			`info->control.terms ? "on" : "off");`
368
369			`return string;`
370			`}`
371
372			`/* Prototype: int powertecscsi_set_proc_info(struct Scsi_Host host, char buffer, int length)`
373			`* Purpose : Set a driver specific function`
374			`* Params : host - host to setup`
375			`* : buffer - buffer containing string describing operation`
376			`* : length - length of string`
377			`* Returns : -EINVAL, or 0`
378			`*/`
379			`static int`
380			`powertecscsi_set_proc_info(struct Scsi_Host host, char buffer, int length)`
381			`{`
382			`int ret = length;`
383
384			`if (length >= 12 && strncmp(buffer, "POWERTECSCSI", 12) == 0) {`
385			`buffer += 12;`
386			`length -= 12;`
387
388			`if (length >= 5 && strncmp(buffer, "term=", 5) == 0) {`
389			`if (buffer[5] == '1')`
390			`powertecscsi_terminator_ctl(host, 1);`
391			`else if (buffer[5] == '0')`
392			`powertecscsi_terminator_ctl(host, 0);`
393			`else`
394			`ret = -EINVAL;`
395			`} else`
396			`ret = -EINVAL;`
397			`} else`
398			`ret = -EINVAL;`
399
400			`return ret;`
401			`}`
402
403			`/* Prototype: int powertecscsi_proc_info(char buffer, char *start, off_t offset,`
404			`* int length, int host_no, int inout)`
405			`* Purpose : Return information about the driver to a user process accessing`
406			`* the /proc filesystem.`
407			`* Params : buffer - a buffer to write information to`
408			`* start - a pointer into this buffer set by this routine to the start`
409			`* of the required information.`
410			`* offset - offset into information that we have read upto.`
411			`* length - length of buffer`
412			`* host_no - host number to return information for`
413			`* inout - 0 for reading, 1 for writing.`
414			`* Returns : length of data written to buffer.`
415			`*/`
416			`int powertecscsi_proc_info(char buffer, char *start, off_t offset,`
417			`int length, int host_no, int inout)`
418			`{`
419			`int pos, begin, first;`
420			`struct Scsi_Host *host = scsi_hostlist;`
421			`PowerTecScsi_Info *info;`
422			`Scsi_Device *scd;`
423
424			`while (host) {`
425			`if (host->host_no == host_no)`
426			`break;`
427			`host = host->next;`
428			`}`
429			`if (!host)`
430			`return 0;`
431
432			`if (inout == 1)`
433			`return powertecscsi_set_proc_info(host, buffer, length);`
434
435			`info = (PowerTecScsi_Info *)host->hostdata;`
436
437			`begin = 0;`
438			`pos = sprintf(buffer,`
439			`"PowerTec SCSI driver version %d.%d.%d\n",`
440			`VER_MAJOR, VER_MINOR, VER_PATCH);`
441			`pos += sprintf(buffer + pos,`
442			`"Address: %08X IRQ : %d DMA : %d\n"`
443			`"FAS : %-10s TERM: %-3s\n\n"`
444			`"Statistics:\n",`
445			`host->io_port, host->irq, host->dma_channel,`
446			`info->info.scsi.type, info->control.terms ? "on" : "off");`
447
448			`pos += fas216_print_stats(&info->info, buffer + pos);`
449
450			`first = 1;`
451			`pos += sprintf(buffer+pos, "\nAttached devices:");`
452
453			`for (scd = scsi_devices; scd; scd = scd->next) {`
454			`if (scd->host == host) {`
455			`if (first) {`
456			`pos += sprintf(buffer+pos, "\n");`
457			`first = 0;`
458			`}`
459
460			`pos += fas216_print_device(&info->info, scd, buffer + pos);`
461
462			`if (pos + begin < offset) {`
463			`begin += pos;`
464			`pos = 0;`
465			`}`
466			`if (pos + begin > offset + length)`
467			`break;`
468			`}`
469			`}`
470
471			`if (first)`
472			`pos += sprintf(buffer + pos, " none\n");`
473
474			`*start = buffer + (offset - begin);`
475			`pos -= offset - begin;`
476			`if (pos > length)`
477			`pos = length;`
478
479			`return pos;`
480			`}`
481
482			`#ifdef MODULE`
483			`Scsi_Host_Template driver_template = POWERTECSCSI;`
484
485			`#include "scsi_module.c"`
486			`#endif`