aboutsummaryrefslogtreecommitdiff
path: root/drivers/scsi/arm/cumana_1.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/scsi/arm/cumana_1.c')
-rw-r--r--drivers/scsi/arm/cumana_1.c357
1 files changed, 357 insertions, 0 deletions
diff --git a/drivers/scsi/arm/cumana_1.c b/drivers/scsi/arm/cumana_1.c
new file mode 100644
index 00000000000..27271bfc01d
--- /dev/null
+++ b/drivers/scsi/arm/cumana_1.c
@@ -0,0 +1,357 @@
+/*
+ * Generic Generic NCR5380 driver
+ *
+ * Copyright 1995-2002, Russell King
+ */
+#include <linux/module.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/ioport.h>
+#include <linux/delay.h>
+#include <linux/blkdev.h>
+#include <linux/init.h>
+
+#include <asm/ecard.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/system.h>
+
+#include "../scsi.h"
+#include <scsi/scsi_host.h>
+
+#include <scsi/scsicam.h>
+
+#define AUTOSENSE
+#define PSEUDO_DMA
+
+#define CUMANASCSI_PUBLIC_RELEASE 1
+
+#define NCR5380_implementation_fields int port, ctrl
+#define NCR5380_local_declare() struct Scsi_Host *_instance
+#define NCR5380_setup(instance) _instance = instance
+#define NCR5380_read(reg) cumanascsi_read(_instance, reg)
+#define NCR5380_write(reg, value) cumanascsi_write(_instance, reg, value)
+#define NCR5380_intr cumanascsi_intr
+#define NCR5380_queue_command cumanascsi_queue_command
+#define NCR5380_proc_info cumanascsi_proc_info
+
+#define BOARD_NORMAL 0
+#define BOARD_NCR53C400 1
+
+#include "../NCR5380.h"
+
+void cumanascsi_setup(char *str, int *ints)
+{
+}
+
+const char *cumanascsi_info(struct Scsi_Host *spnt)
+{
+ return "";
+}
+
+#ifdef NOT_EFFICIENT
+#define CTRL(p,v) outb(*ctrl = (v), (p) - 577)
+#define STAT(p) inb((p)+1)
+#define IN(p) inb((p))
+#define OUT(v,p) outb((v), (p))
+#else
+#define CTRL(p,v) (p[-2308] = (*ctrl = (v)))
+#define STAT(p) (p[4])
+#define IN(p) (*(p))
+#define IN2(p) ((unsigned short)(*(volatile unsigned long *)(p)))
+#define OUT(v,p) (*(p) = (v))
+#define OUT2(v,p) (*((volatile unsigned long *)(p)) = (v))
+#endif
+#define L(v) (((v)<<16)|((v) & 0x0000ffff))
+#define H(v) (((v)>>16)|((v) & 0xffff0000))
+
+static inline int
+NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *addr, int len)
+{
+ int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl;
+ int oldctrl = *ctrl;
+ unsigned long *laddr;
+#ifdef NOT_EFFICIENT
+ int iobase = instance->io_port;
+ int dma_io = iobase & ~(0x3C0000>>2);
+#else
+ volatile unsigned char *iobase = (unsigned char *)ioaddr(instance->io_port);
+ volatile unsigned char *dma_io = (unsigned char *)((int)iobase & ~0x3C0000);
+#endif
+
+ if(!len) return 0;
+
+ CTRL(iobase, 0x02);
+ laddr = (unsigned long *)addr;
+ while(len >= 32)
+ {
+ int status;
+ unsigned long v;
+ status = STAT(iobase);
+ if(status & 0x80)
+ goto end;
+ if(!(status & 0x40))
+ continue;
+ v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
+ v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
+ v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
+ v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
+ v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
+ v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
+ v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
+ v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
+ len -= 32;
+ if(len == 0)
+ break;
+ }
+
+ addr = (unsigned char *)laddr;
+ CTRL(iobase, 0x12);
+ while(len > 0)
+ {
+ int status;
+ status = STAT(iobase);
+ if(status & 0x80)
+ goto end;
+ if(status & 0x40)
+ {
+ OUT(*addr++, dma_io);
+ if(--len == 0)
+ break;
+ }
+
+ status = STAT(iobase);
+ if(status & 0x80)
+ goto end;
+ if(status & 0x40)
+ {
+ OUT(*addr++, dma_io);
+ if(--len == 0)
+ break;
+ }
+ }
+end:
+ CTRL(iobase, oldctrl|0x40);
+ return len;
+}
+
+static inline int
+NCR5380_pread(struct Scsi_Host *instance, unsigned char *addr, int len)
+{
+ int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl;
+ int oldctrl = *ctrl;
+ unsigned long *laddr;
+#ifdef NOT_EFFICIENT
+ int iobase = instance->io_port;
+ int dma_io = iobase & ~(0x3C0000>>2);
+#else
+ volatile unsigned char *iobase = (unsigned char *)ioaddr(instance->io_port);
+ volatile unsigned char *dma_io = (unsigned char *)((int)iobase & ~0x3C0000);
+#endif
+
+ if(!len) return 0;
+
+ CTRL(iobase, 0x00);
+ laddr = (unsigned long *)addr;
+ while(len >= 32)
+ {
+ int status;
+ status = STAT(iobase);
+ if(status & 0x80)
+ goto end;
+ if(!(status & 0x40))
+ continue;
+ *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
+ *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
+ *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
+ *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
+ *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
+ *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
+ *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
+ *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
+ len -= 32;
+ if(len == 0)
+ break;
+ }
+
+ addr = (unsigned char *)laddr;
+ CTRL(iobase, 0x10);
+ while(len > 0)
+ {
+ int status;
+ status = STAT(iobase);
+ if(status & 0x80)
+ goto end;
+ if(status & 0x40)
+ {
+ *addr++ = IN(dma_io);
+ if(--len == 0)
+ break;
+ }
+
+ status = STAT(iobase);
+ if(status & 0x80)
+ goto end;
+ if(status & 0x40)
+ {
+ *addr++ = IN(dma_io);
+ if(--len == 0)
+ break;
+ }
+ }
+end:
+ CTRL(iobase, oldctrl|0x40);
+ return len;
+}
+
+#undef STAT
+#undef CTRL
+#undef IN
+#undef OUT
+
+#define CTRL(p,v) outb(*ctrl = (v), (p) - 577)
+
+static char cumanascsi_read(struct Scsi_Host *instance, int reg)
+{
+ unsigned int iobase = instance->io_port;
+ int i;
+ int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl;
+
+ CTRL(iobase, 0);
+ i = inb(iobase + 64 + reg);
+ CTRL(iobase, 0x40);
+
+ return i;
+}
+
+static void cumanascsi_write(struct Scsi_Host *instance, int reg, int value)
+{
+ int iobase = instance->io_port;
+ int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl;
+
+ CTRL(iobase, 0);
+ outb(value, iobase + 64 + reg);
+ CTRL(iobase, 0x40);
+}
+
+#undef CTRL
+
+#include "../NCR5380.c"
+
+static Scsi_Host_Template cumanascsi_template = {
+ .module = THIS_MODULE,
+ .name = "Cumana 16-bit SCSI",
+ .info = cumanascsi_info,
+ .queuecommand = cumanascsi_queue_command,
+ .eh_abort_handler = NCR5380_abort,
+ .eh_device_reset_handler= NCR5380_device_reset,
+ .eh_bus_reset_handler = NCR5380_bus_reset,
+ .eh_host_reset_handler = NCR5380_host_reset,
+ .can_queue = 16,
+ .this_id = 7,
+ .sg_tablesize = SG_ALL,
+ .cmd_per_lun = 2,
+ .unchecked_isa_dma = 0,
+ .use_clustering = DISABLE_CLUSTERING,
+ .proc_name = "CumanaSCSI-1",
+};
+
+static int __devinit
+cumanascsi1_probe(struct expansion_card *ec, const struct ecard_id *id)
+{
+ struct Scsi_Host *host;
+ int ret = -ENOMEM;
+
+ host = scsi_host_alloc(&cumanascsi_template, sizeof(struct NCR5380_hostdata));
+ if (!host)
+ goto out;
+
+ host->io_port = ecard_address(ec, ECARD_IOC, ECARD_SLOW) + 0x800;
+ host->irq = ec->irq;
+
+ NCR5380_init(host, 0);
+
+ host->n_io_port = 255;
+ if (!(request_region(host->io_port, host->n_io_port, "CumanaSCSI-1"))) {
+ ret = -EBUSY;
+ goto out_free;
+ }
+
+ ((struct NCR5380_hostdata *)host->hostdata)->ctrl = 0;
+ outb(0x00, host->io_port - 577);
+
+ ret = request_irq(host->irq, cumanascsi_intr, SA_INTERRUPT,
+ "CumanaSCSI-1", host);
+ if (ret) {
+ printk("scsi%d: IRQ%d not free: %d\n",
+ host->host_no, host->irq, ret);
+ goto out_release;
+ }
+
+ printk("scsi%d: at port 0x%08lx irq %d",
+ host->host_no, host->io_port, host->irq);
+ printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d",
+ host->can_queue, host->cmd_per_lun, CUMANASCSI_PUBLIC_RELEASE);
+ printk("\nscsi%d:", host->host_no);
+ NCR5380_print_options(host);
+ printk("\n");
+
+ ret = scsi_add_host(host, &ec->dev);
+ if (ret)
+ goto out_free_irq;
+
+ scsi_scan_host(host);
+ goto out;
+
+ out_free_irq:
+ free_irq(host->irq, host);
+ out_release:
+ release_region(host->io_port, host->n_io_port);
+ out_free:
+ scsi_host_put(host);
+ out:
+ return ret;
+}
+
+static void __devexit cumanascsi1_remove(struct expansion_card *ec)
+{
+ struct Scsi_Host *host = ecard_get_drvdata(ec);
+
+ ecard_set_drvdata(ec, NULL);
+
+ scsi_remove_host(host);
+ free_irq(host->irq, host);
+ NCR5380_exit(host);
+ release_region(host->io_port, host->n_io_port);
+ scsi_host_put(host);
+}
+
+static const struct ecard_id cumanascsi1_cids[] = {
+ { MANU_CUMANA, PROD_CUMANA_SCSI_1 },
+ { 0xffff, 0xffff }
+};
+
+static struct ecard_driver cumanascsi1_driver = {
+ .probe = cumanascsi1_probe,
+ .remove = __devexit_p(cumanascsi1_remove),
+ .id_table = cumanascsi1_cids,
+ .drv = {
+ .name = "cumanascsi1",
+ },
+};
+
+static int __init cumanascsi_init(void)
+{
+ return ecard_register_driver(&cumanascsi1_driver);
+}
+
+static void __exit cumanascsi_exit(void)
+{
+ ecard_remove_driver(&cumanascsi1_driver);
+}
+
+module_init(cumanascsi_init);
+module_exit(cumanascsi_exit);
+
+MODULE_DESCRIPTION("Cumana SCSI-1 driver for Acorn machines");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-11-27 15:49:13 +0000