Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / scsi / arm / oak.c

diff --git a/kernel/drivers/scsi/arm/oak.c b/kernel/drivers/scsi/arm/oak.c
new file mode 100644 (file)
index 0000000..7c6fa14
--- /dev/null
+++ b/kernel/drivers/scsi/arm/oak.c
@@ -0,0 +1,207 @@
+/*
+ * Oak Generic NCR5380 driver
+ *
+ * Copyright 1995-2002, Russell King
+ */
+
+#include <linux/module.h>
+#include <linux/signal.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 <scsi/scsi_host.h>
+
+/*#define PSEUDO_DMA*/
+#define DONT_USE_INTR
+
+#define priv(host)                     ((struct NCR5380_hostdata *)(host)->hostdata)
+#define NCR5380_local_declare()                void __iomem *_base
+#define NCR5380_setup(host)            _base = priv(host)->base
+
+#define NCR5380_read(reg)              readb(_base + ((reg) << 2))
+#define NCR5380_write(reg, value)      writeb(value, _base + ((reg) << 2))
+#define NCR5380_queue_command          oakscsi_queue_command
+#define NCR5380_info                   oakscsi_info
+#define NCR5380_show_info              oakscsi_show_info
+
+#define NCR5380_implementation_fields  \
+       void __iomem *base
+
+#include "../NCR5380.h"
+
+#undef START_DMA_INITIATOR_RECEIVE_REG
+#define START_DMA_INITIATOR_RECEIVE_REG        (128 + 7)
+
+#define STAT   ((128 + 16) << 2)
+#define DATA   ((128 + 8) << 2)
+
+static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *addr,
+              int len)
+{
+  void __iomem *base = priv(instance)->base;
+
+printk("writing %p len %d\n",addr, len);
+  if(!len) return -1;
+
+  while(1)
+  {
+    int status;
+    while (((status = readw(base + STAT)) & 0x100)==0);
+  }
+}
+
+static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *addr,
+              int len)
+{
+  void __iomem *base = priv(instance)->base;
+printk("reading %p len %d\n", addr, len);
+  while(len > 0)
+  {
+    unsigned int status, timeout;
+    unsigned long b;
+    
+    timeout = 0x01FFFFFF;
+    
+    while (((status = readw(base + STAT)) & 0x100)==0)
+    {
+      timeout--;
+      if(status & 0x200 || !timeout)
+      {
+        printk("status = %08X\n", status);
+        return 1;
+      }
+    }
+
+    if(len >= 128)
+    {
+      readsw(base + DATA, addr, 128);
+      addr += 128;
+      len -= 128;
+    }
+    else
+    {
+      b = (unsigned long) readw(base + DATA);
+      *addr ++ = b;
+      len -= 1;
+      if(len)
+        *addr ++ = b>>8;
+      len -= 1;
+    }
+  }
+  return 0;
+}
+
+#undef STAT
+#undef DATA
+
+#include "../NCR5380.c"
+
+static struct scsi_host_template oakscsi_template = {
+       .module                 = THIS_MODULE,
+       .show_info              = oakscsi_show_info,
+       .name                   = "Oak 16-bit SCSI",
+       .info                   = oakscsi_info,
+       .queuecommand           = oakscsi_queue_command,
+       .eh_abort_handler       = NCR5380_abort,
+       .eh_bus_reset_handler   = NCR5380_bus_reset,
+       .can_queue              = 16,
+       .this_id                = 7,
+       .sg_tablesize           = SG_ALL,
+       .cmd_per_lun            = 2,
+       .use_clustering         = DISABLE_CLUSTERING,
+       .proc_name              = "oakscsi",
+};
+
+static int oakscsi_probe(struct expansion_card *ec, const struct ecard_id *id)
+{
+       struct Scsi_Host *host;
+       int ret = -ENOMEM;
+
+       ret = ecard_request_resources(ec);
+       if (ret)
+               goto out;
+
+       host = scsi_host_alloc(&oakscsi_template, sizeof(struct NCR5380_hostdata));
+       if (!host) {
+               ret = -ENOMEM;
+               goto release;
+       }
+
+       priv(host)->base = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
+                                  ecard_resource_len(ec, ECARD_RES_MEMC));
+       if (!priv(host)->base) {
+               ret = -ENOMEM;
+               goto unreg;
+       }
+
+       host->irq = NO_IRQ;
+       host->n_io_port = 255;
+
+       NCR5380_init(host, 0);
+
+       ret = scsi_add_host(host, &ec->dev);
+       if (ret)
+               goto out_unmap;
+
+       scsi_scan_host(host);
+       goto out;
+
+ out_unmap:
+       iounmap(priv(host)->base);
+ unreg:
+       scsi_host_put(host);
+ release:
+       ecard_release_resources(ec);
+ out:
+       return ret;
+}
+
+static void oakscsi_remove(struct expansion_card *ec)
+{
+       struct Scsi_Host *host = ecard_get_drvdata(ec);
+
+       ecard_set_drvdata(ec, NULL);
+       scsi_remove_host(host);
+
+       NCR5380_exit(host);
+       iounmap(priv(host)->base);
+       scsi_host_put(host);
+       ecard_release_resources(ec);
+}
+
+static const struct ecard_id oakscsi_cids[] = {
+       { MANU_OAK, PROD_OAK_SCSI },
+       { 0xffff, 0xffff }
+};
+
+static struct ecard_driver oakscsi_driver = {
+       .probe          = oakscsi_probe,
+       .remove         = oakscsi_remove,
+       .id_table       = oakscsi_cids,
+       .drv = {
+               .name           = "oakscsi",
+       },
+};
+
+static int __init oakscsi_init(void)
+{
+       return ecard_register_driver(&oakscsi_driver);
+}
+
+static void __exit oakscsi_exit(void)
+{
+       ecard_remove_driver(&oakscsi_driver);
+}
+
+module_init(oakscsi_init);
+module_exit(oakscsi_exit);
+
+MODULE_AUTHOR("Russell King");
+MODULE_DESCRIPTION("Oak SCSI driver");
+MODULE_LICENSE("GPL");
+