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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/scsi/arm/eesox.c
downloadop-kernel-dev-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip
op-kernel-dev-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/scsi/arm/eesox.c')
-rw-r--r--drivers/scsi/arm/eesox.c680
1 files changed, 680 insertions, 0 deletions
diff --git a/drivers/scsi/arm/eesox.c b/drivers/scsi/arm/eesox.c
new file mode 100644
index 0000000..78b7e54
--- /dev/null
+++ b/drivers/scsi/arm/eesox.c
@@ -0,0 +1,680 @@
+/*
+ * linux/drivers/acorn/scsi/eesox.c
+ *
+ * Copyright (C) 1997-2005 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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.
+ * 27-06-1998 RMK Changed asm/delay.h to linux/delay.h
+ * 02-04-2000 RMK 0.0.3 Fixed NO_IRQ/NO_DMA problem, updated for new
+ * error handling code.
+ */
+#include <linux/module.h>
+#include <linux/blkdev.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/ioport.h>
+#include <linux/sched.h>
+#include <linux/proc_fs.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/dma-mapping.h>
+
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/dma.h>
+#include <asm/ecard.h>
+#include <asm/pgtable.h>
+
+#include "../scsi.h"
+#include <scsi/scsi_host.h>
+#include "fas216.h"
+#include "scsi.h"
+
+#include <scsi/scsicam.h>
+
+#define EESOX_FAS216_OFFSET 0x3000
+#define EESOX_FAS216_SHIFT 5
+
+#define EESOX_DMASTAT 0x2800
+#define EESOX_STAT_INTR 0x01
+#define EESOX_STAT_DMA 0x02
+
+#define EESOX_CONTROL 0x2800
+#define EESOX_INTR_ENABLE 0x04
+#define EESOX_TERM_ENABLE 0x02
+#define EESOX_RESET 0x01
+
+#define EESOX_DMADATA 0x3800
+
+#define VERSION "1.10 (17/01/2003 2.5.59)"
+
+/*
+ * Use term=0,1,0,0,0 to turn terminators on/off
+ */
+static int term[MAX_ECARDS] = { 1, 1, 1, 1, 1, 1, 1, 1 };
+
+#define NR_SG 256
+
+struct eesoxscsi_info {
+ FAS216_Info info;
+ struct expansion_card *ec;
+ void __iomem *base;
+ void __iomem *ctl_port;
+ unsigned int control;
+ struct scatterlist sg[NR_SG]; /* Scatter DMA list */
+};
+
+/* 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 eesoxscsi_info *info = (struct eesoxscsi_info *)ec->irq_data;
+
+ info->control |= EESOX_INTR_ENABLE;
+
+ writeb(info->control, info->ctl_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 eesoxscsi_info *info = (struct eesoxscsi_info *)ec->irq_data;
+
+ info->control &= ~EESOX_INTR_ENABLE;
+
+ writeb(info->control, info->ctl_port);
+}
+
+static const expansioncard_ops_t eesoxscsi_ops = {
+ .irqenable = eesoxscsi_irqenable,
+ .irqdisable = eesoxscsi_irqdisable,
+};
+
+/* 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)
+{
+ struct eesoxscsi_info *info = (struct eesoxscsi_info *)host->hostdata;
+ unsigned long flags;
+
+ spin_lock_irqsave(host->host_lock, flags);
+ if (on_off)
+ info->control |= EESOX_TERM_ENABLE;
+ else
+ info->control &= ~EESOX_TERM_ENABLE;
+
+ writeb(info->control, info->ctl_port);
+ spin_unlock_irqrestore(host->host_lock, flags);
+}
+
+/* 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 irqreturn_t
+eesoxscsi_intr(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct eesoxscsi_info *info = dev_id;
+
+ return fas216_intr(&info->info);
+}
+
+/* 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)
+{
+ struct eesoxscsi_info *info = (struct eesoxscsi_info *)host->hostdata;
+ struct device *dev = scsi_get_device(host);
+ int dmach = info->info.scsi.dma;
+
+ if (dmach != NO_DMA &&
+ (min_type == fasdma_real_all || SCp->this_residual >= 512)) {
+ int bufs, map_dir, dma_dir;
+
+ bufs = copy_SCp_to_sg(&info->sg[0], SCp, NR_SG);
+
+ if (direction == DMA_OUT)
+ map_dir = DMA_TO_DEVICE,
+ dma_dir = DMA_MODE_WRITE;
+ else
+ map_dir = DMA_FROM_DEVICE,
+ dma_dir = DMA_MODE_READ;
+
+ dma_map_sg(dev, info->sg, bufs + 1, map_dir);
+
+ disable_dma(dmach);
+ set_dma_sg(dmach, info->sg, bufs + 1);
+ set_dma_mode(dmach, dma_dir);
+ 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_buffer_in(void *buf, int length, void __iomem *base)
+{
+ const void __iomem *reg_fas = base + EESOX_FAS216_OFFSET;
+ const void __iomem *reg_dmastat = base + EESOX_DMASTAT;
+ const void __iomem *reg_dmadata = base + EESOX_DMADATA;
+ const register unsigned long mask = 0xffff;
+
+ do {
+ unsigned int status;
+
+ /*
+ * Interrupt request?
+ */
+ status = readb(reg_fas + (REG_STAT << EESOX_FAS216_SHIFT));
+ if (status & STAT_INT)
+ break;
+
+ /*
+ * DMA request active?
+ */
+ status = readb(reg_dmastat);
+ if (!(status & EESOX_STAT_DMA))
+ continue;
+
+ /*
+ * Get number of bytes in FIFO
+ */
+ status = readb(reg_fas + (REG_CFIS << EESOX_FAS216_SHIFT)) & CFIS_CF;
+ if (status > 16)
+ status = 16;
+ if (status > length)
+ status = length;
+
+ /*
+ * Align buffer.
+ */
+ if (((u32)buf) & 2 && status >= 2) {
+ *(u16 *)buf = readl(reg_dmadata);
+ buf += 2;
+ status -= 2;
+ length -= 2;
+ }
+
+ if (status >= 8) {
+ unsigned long l1, l2;
+
+ l1 = readl(reg_dmadata) & mask;
+ l1 |= readl(reg_dmadata) << 16;
+ l2 = readl(reg_dmadata) & mask;
+ l2 |= readl(reg_dmadata) << 16;
+ *(u32 *)buf = l1;
+ buf += 4;
+ *(u32 *)buf = l2;
+ buf += 4;
+ length -= 8;
+ continue;
+ }
+
+ if (status >= 4) {
+ unsigned long l1;
+
+ l1 = readl(reg_dmadata) & mask;
+ l1 |= readl(reg_dmadata) << 16;
+
+ *(u32 *)buf = l1;
+ buf += 4;
+ length -= 4;
+ continue;
+ }
+
+ if (status >= 2) {
+ *(u16 *)buf = readl(reg_dmadata);
+ buf += 2;
+ length -= 2;
+ }
+ } while (length);
+}
+
+static void eesoxscsi_buffer_out(void *buf, int length, void __iomem *base)
+{
+ const void __iomem *reg_fas = base + EESOX_FAS216_OFFSET;
+ const void __iomem *reg_dmastat = base + EESOX_DMASTAT;
+ const void __iomem *reg_dmadata = base + EESOX_DMADATA;
+
+ do {
+ unsigned int status;
+
+ /*
+ * Interrupt request?
+ */
+ status = readb(reg_fas + (REG_STAT << EESOX_FAS216_SHIFT));
+ if (status & STAT_INT)
+ break;
+
+ /*
+ * DMA request active?
+ */
+ status = readb(reg_dmastat);
+ if (!(status & EESOX_STAT_DMA))
+ continue;
+
+ /*
+ * Get number of bytes in FIFO
+ */
+ status = readb(reg_fas + (REG_CFIS << EESOX_FAS216_SHIFT)) & CFIS_CF;
+ if (status > 16)
+ status = 16;
+ status = 16 - status;
+ if (status > length)
+ status = length;
+ status &= ~1;
+
+ /*
+ * Align buffer.
+ */
+ if (((u32)buf) & 2 && status >= 2) {
+ writel(*(u16 *)buf << 16, reg_dmadata);
+ buf += 2;
+ status -= 2;
+ length -= 2;
+ }
+
+ if (status >= 8) {
+ unsigned long l1, l2;
+
+ l1 = *(u32 *)buf;
+ buf += 4;
+ l2 = *(u32 *)buf;
+ buf += 4;
+
+ writel(l1 << 16, reg_dmadata);
+ writel(l1, reg_dmadata);
+ writel(l2 << 16, reg_dmadata);
+ writel(l2, reg_dmadata);
+ length -= 8;
+ continue;
+ }
+
+ if (status >= 4) {
+ unsigned long l1;
+
+ l1 = *(u32 *)buf;
+ buf += 4;
+
+ writel(l1 << 16, reg_dmadata);
+ writel(l1, reg_dmadata);
+ length -= 4;
+ continue;
+ }
+
+ if (status >= 2) {
+ writel(*(u16 *)buf << 16, reg_dmadata);
+ buf += 2;
+ length -= 2;
+ }
+ } while (length);
+}
+
+static void
+eesoxscsi_dma_pseudo(struct Scsi_Host *host, Scsi_Pointer *SCp,
+ fasdmadir_t dir, int transfer_size)
+{
+ struct eesoxscsi_info *info = (struct eesoxscsi_info *)host->hostdata;
+ if (dir == DMA_IN) {
+ eesoxscsi_buffer_in(SCp->ptr, SCp->this_residual, info->base);
+ } else {
+ eesoxscsi_buffer_out(SCp->ptr, SCp->this_residual, info->base);
+ }
+}
+
+/* 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)
+{
+ struct eesoxscsi_info *info = (struct eesoxscsi_info *)host->hostdata;
+ if (info->info.scsi.dma != NO_DMA)
+ disable_dma(info->info.scsi.dma);
+}
+
+/* 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)
+{
+ struct eesoxscsi_info *info = (struct eesoxscsi_info *)host->hostdata;
+ static char string[150];
+
+ sprintf(string, "%s (%s) in slot %d v%s terminators o%s",
+ host->hostt->name, info->info.scsi.type, info->ec->slot_no,
+ VERSION, info->control & EESOX_TERM_ENABLE ? "n" : "ff");
+
+ 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(struct Scsi_Host *host, char *buffer, char **start, off_t offset,
+ int length, int inout)
+{
+ struct eesoxscsi_info *info;
+ char *p = buffer;
+ int pos;
+
+ if (inout == 1)
+ return eesoxscsi_set_proc_info(host, buffer, length);
+
+ info = (struct eesoxscsi_info *)host->hostdata;
+
+ p += sprintf(p, "EESOX SCSI driver v%s\n", VERSION);
+ p += fas216_print_host(&info->info, p);
+ p += sprintf(p, "Term : o%s\n",
+ info->control & EESOX_TERM_ENABLE ? "n" : "ff");
+
+ p += fas216_print_stats(&info->info, p);
+ p += fas216_print_devices(&info->info, p);
+
+ *start = buffer + offset;
+ pos = p - buffer - offset;
+ if (pos > length)
+ pos = length;
+
+ return pos;
+}
+
+static ssize_t eesoxscsi_show_term(struct device *dev, char *buf)
+{
+ struct expansion_card *ec = ECARD_DEV(dev);
+ struct Scsi_Host *host = ecard_get_drvdata(ec);
+ struct eesoxscsi_info *info = (struct eesoxscsi_info *)host->hostdata;
+
+ return sprintf(buf, "%d\n", info->control & EESOX_TERM_ENABLE ? 1 : 0);
+}
+
+static ssize_t eesoxscsi_store_term(struct device *dev, const char *buf, size_t len)
+{
+ struct expansion_card *ec = ECARD_DEV(dev);
+ struct Scsi_Host *host = ecard_get_drvdata(ec);
+ struct eesoxscsi_info *info = (struct eesoxscsi_info *)host->hostdata;
+ unsigned long flags;
+
+ if (len > 1) {
+ spin_lock_irqsave(host->host_lock, flags);
+ if (buf[0] != '0') {
+ info->control |= EESOX_TERM_ENABLE;
+ } else {
+ info->control &= ~EESOX_TERM_ENABLE;
+ }
+ writeb(info->control, info->ctl_port);
+ spin_unlock_irqrestore(host->host_lock, flags);
+ }
+
+ return len;
+}
+
+static DEVICE_ATTR(bus_term, S_IRUGO | S_IWUSR,
+ eesoxscsi_show_term, eesoxscsi_store_term);
+
+static Scsi_Host_Template eesox_template = {
+ .module = THIS_MODULE,
+ .proc_info = eesoxscsi_proc_info,
+ .name = "EESOX SCSI",
+ .info = eesoxscsi_info,
+ .queuecommand = fas216_queue_command,
+ .eh_host_reset_handler = fas216_eh_host_reset,
+ .eh_bus_reset_handler = fas216_eh_bus_reset,
+ .eh_device_reset_handler = fas216_eh_device_reset,
+ .eh_abort_handler = fas216_eh_abort,
+ .can_queue = 1,
+ .this_id = 7,
+ .sg_tablesize = SG_ALL,
+ .cmd_per_lun = 1,
+ .use_clustering = DISABLE_CLUSTERING,
+ .proc_name = "eesox",
+};
+
+static int __devinit
+eesoxscsi_probe(struct expansion_card *ec, const struct ecard_id *id)
+{
+ struct Scsi_Host *host;
+ struct eesoxscsi_info *info;
+ unsigned long resbase, reslen;
+ void __iomem *base;
+ int ret;
+
+ ret = ecard_request_resources(ec);
+ if (ret)
+ goto out;
+
+ resbase = ecard_resource_start(ec, ECARD_RES_IOCFAST);
+ reslen = ecard_resource_len(ec, ECARD_RES_IOCFAST);
+ base = ioremap(resbase, reslen);
+ if (!base) {
+ ret = -ENOMEM;
+ goto out_region;
+ }
+
+ host = scsi_host_alloc(&eesox_template,
+ sizeof(struct eesoxscsi_info));
+ if (!host) {
+ ret = -ENOMEM;
+ goto out_unmap;
+ }
+
+ ecard_set_drvdata(ec, host);
+
+ info = (struct eesoxscsi_info *)host->hostdata;
+ info->ec = ec;
+ info->base = base;
+ info->ctl_port = base + EESOX_CONTROL;
+ info->control = term[ec->slot_no] ? EESOX_TERM_ENABLE : 0;
+ writeb(info->control, info->ctl_port);
+
+ info->info.scsi.io_base = base + EESOX_FAS216_OFFSET;
+ info->info.scsi.io_shift = EESOX_FAS216_SHIFT;
+ info->info.scsi.irq = ec->irq;
+ info->info.scsi.dma = ec->dma;
+ info->info.ifcfg.clockrate = 40; /* MHz */
+ info->info.ifcfg.select_timeout = 255;
+ info->info.ifcfg.asyncperiod = 200; /* ns */
+ info->info.ifcfg.sync_max_depth = 7;
+ info->info.ifcfg.cntl3 = CNTL3_FASTSCSI | CNTL3_FASTCLK;
+ info->info.ifcfg.disconnect_ok = 1;
+ info->info.ifcfg.wide_max_size = 0;
+ info->info.ifcfg.capabilities = FASCAP_PSEUDODMA;
+ info->info.dma.setup = eesoxscsi_dma_setup;
+ info->info.dma.pseudo = eesoxscsi_dma_pseudo;
+ info->info.dma.stop = eesoxscsi_dma_stop;
+
+ ec->irqaddr = base + EESOX_DMASTAT;
+ ec->irqmask = EESOX_STAT_INTR;
+ ec->irq_data = info;
+ ec->ops = &eesoxscsi_ops;
+
+ device_create_file(&ec->dev, &dev_attr_bus_term);
+
+ ret = fas216_init(host);
+ if (ret)
+ goto out_free;
+
+ ret = request_irq(ec->irq, eesoxscsi_intr, 0, "eesoxscsi", info);
+ if (ret) {
+ printk("scsi%d: IRQ%d not free: %d\n",
+ host->host_no, ec->irq, ret);
+ goto out_remove;
+ }
+
+ if (info->info.scsi.dma != NO_DMA) {
+ if (request_dma(info->info.scsi.dma, "eesox")) {
+ printk("scsi%d: DMA%d not free, DMA disabled\n",
+ host->host_no, info->info.scsi.dma);
+ info->info.scsi.dma = NO_DMA;
+ } else {
+ set_dma_speed(info->info.scsi.dma, 180);
+ info->info.ifcfg.capabilities |= FASCAP_DMA;
+ info->info.ifcfg.cntl3 |= CNTL3_BS8;
+ }
+ }
+
+ ret = fas216_add(host, &ec->dev);
+ if (ret == 0)
+ goto out;
+
+ if (info->info.scsi.dma != NO_DMA)
+ free_dma(info->info.scsi.dma);
+ free_irq(ec->irq, host);
+
+ out_remove:
+ fas216_remove(host);
+
+ out_free:
+ device_remove_file(&ec->dev, &dev_attr_bus_term);
+ scsi_host_put(host);
+
+ out_unmap:
+ iounmap(base);
+
+ out_region:
+ ecard_release_resources(ec);
+
+ out:
+ return ret;
+}
+
+static void __devexit eesoxscsi_remove(struct expansion_card *ec)
+{
+ struct Scsi_Host *host = ecard_get_drvdata(ec);
+ struct eesoxscsi_info *info = (struct eesoxscsi_info *)host->hostdata;
+
+ ecard_set_drvdata(ec, NULL);
+ fas216_remove(host);
+
+ if (info->info.scsi.dma != NO_DMA)
+ free_dma(info->info.scsi.dma);
+ free_irq(ec->irq, info);
+
+ device_remove_file(&ec->dev, &dev_attr_bus_term);
+
+ iounmap(info->base);
+
+ fas216_release(host);
+ scsi_host_put(host);
+ ecard_release_resources(ec);
+}
+
+static const struct ecard_id eesoxscsi_cids[] = {
+ { MANU_EESOX, PROD_EESOX_SCSI2 },
+ { 0xffff, 0xffff },
+};
+
+static struct ecard_driver eesoxscsi_driver = {
+ .probe = eesoxscsi_probe,
+ .remove = __devexit_p(eesoxscsi_remove),
+ .id_table = eesoxscsi_cids,
+ .drv = {
+ .name = "eesoxscsi",
+ },
+};
+
+static int __init eesox_init(void)
+{
+ return ecard_register_driver(&eesoxscsi_driver);
+}
+
+static void __exit eesox_exit(void)
+{
+ ecard_remove_driver(&eesoxscsi_driver);
+}
+
+module_init(eesox_init);
+module_exit(eesox_exit);
+
+MODULE_AUTHOR("Russell King");
+MODULE_DESCRIPTION("EESOX 'Fast' SCSI driver for Acorn machines");
+MODULE_PARM(term, "1-8i");
+MODULE_PARM_DESC(term, "SCSI bus termination");
+MODULE_LICENSE("GPL");
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