mac_scsi: Add module option to Kconfig

Allow mac_scsi to be built as a module. Replace the old validation of
__setup options with code that validates both module and __setup options.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>

1 files changed, 37 insertions, 75 deletions

diff --git a/drivers/scsi/mac_scsi.c b/drivers/scsi/mac_scsi.c
index 2b604a85f7c1..3b93f000499a 100644
--- a/drivers/scsi/mac_scsi.c
+++ b/drivers/scsi/mac_scsi.c
@@ -62,15 +62,18 @@
 static void mac_scsi_reset_boot(struct Scsi_Host *instance);
 #endif
 
-static int setup_called = 0;
 static int setup_can_queue = -1;
+module_param(setup_can_queue, int, 0);
 static int setup_cmd_per_lun = -1;
+module_param(setup_cmd_per_lun, int, 0);
 static int setup_sg_tablesize = -1;
+module_param(setup_sg_tablesize, int, 0);
 static int setup_use_pdma = -1;
-#ifdef SUPPORT_TAGS
+module_param(setup_use_pdma, int, 0);
 static int setup_use_tagged_queuing = -1;
-#endif
+module_param(setup_use_tagged_queuing, int, 0);
 static int setup_hostid = -1;
+module_param(setup_hostid, int, 0);
 
 /* Time (in jiffies) to wait after a reset; the SCSI standard calls for 250ms,
  * we usually do 0.5s to be on the safe side. But Toshiba CD-ROMs once more
@@ -102,72 +105,34 @@ static __inline__ void macscsi_write(struct Scsi_Host *instance, int reg, int va
   out_8(instance->io_port + (reg<<4), value);
 }
 
-/*
- * Function : mac_scsi_setup(char *str)
- *
- * Purpose : booter command line initialization of the overrides array,
- *
- * Inputs : str - comma delimited list of options
- *
- */
-
-static int __init mac_scsi_setup(char *str) {
+#ifndef MODULE
+static int __init mac_scsi_setup(char *str)
+{
         int ints[7];
-        
-        (void)get_options( str, ARRAY_SIZE(ints), ints);
-        
-        if (setup_called++ || ints[0] < 1 || ints[0] > 6) {
-            printk(KERN_WARNING "scsi: <mac5380>"
-                " Usage: mac5380=<can_queue>[,<cmd_per_lun>,<sg_tablesize>,<hostid>,<use_tags>,<use_pdma>]\n");
-            printk(KERN_ALERT "scsi: <mac5380> Bad Penguin parameters?\n");
-            return 0;
-        }
-            
-        if (ints[0] >= 1) {
-                if (ints[1] > 0)
-                        /* no limits on this, just > 0 */
-                        setup_can_queue = ints[1];
-        }
-        if (ints[0] >= 2) {
-                if (ints[2] > 0)
-                        setup_cmd_per_lun = ints[2];
-        }
-        if (ints[0] >= 3) {
-                if (ints[3] >= 0) {
-                        setup_sg_tablesize = ints[3];
-                        /* Must be <= SG_ALL (255) */
-                        if (setup_sg_tablesize > SG_ALL)
-                                setup_sg_tablesize = SG_ALL;
-                }
-        }
-        if (ints[0] >= 4) {
-                /* Must be between 0 and 7 */
-                if (ints[4] >= 0 && ints[4] <= 7)
-                        setup_hostid = ints[4];
-                else if (ints[4] > 7)
-                        printk(KERN_WARNING "mac_scsi_setup: invalid host ID %d !\n", ints[4] );
-        }
-#ifdef SUPPORT_TAGS     
-        if (ints[0] >= 5) {
-                if (ints[5] >= 0)
-                        setup_use_tagged_queuing = !!ints[5];
+
+        (void)get_options(str, ARRAY_SIZE(ints), ints);
+
+        if (ints[0] < 1 || ints[0] > 6) {
+                pr_err("Usage: mac5380=<can_queue>[,<cmd_per_lun>[,<sg_tablesize>[,<hostid>[,<use_tags>[,<use_pdma>]]]]]\n");
+                return 0;
         }
-        
-        if (ints[0] == 6) {
-            if (ints[6] >= 0)
+        if (ints[0] >= 1)
+                setup_can_queue = ints[1];
+        if (ints[0] >= 2)
+                setup_cmd_per_lun = ints[2];
+        if (ints[0] >= 3)
+                setup_sg_tablesize = ints[3];
+        if (ints[0] >= 4)
+                setup_hostid = ints[4];
+        if (ints[0] >= 5)
+                setup_use_tagged_queuing = ints[5];
+        if (ints[0] >= 6)
                 setup_use_pdma = ints[6];
-        }
-#else
-        if (ints[0] == 5) {
-            if (ints[5] >= 0)
-                setup_use_pdma = ints[5];
-        }
-#endif /* SUPPORT_TAGS */
-        
         return 1;
 }
 
 __setup("mac5380=", mac_scsi_setup);
+#endif /* !MODULE */
 
 /*
  * Function : int macscsi_detect(struct scsi_host_template * tpnt)
@@ -199,13 +164,8 @@ int __init macscsi_detect(struct scsi_host_template * tpnt)
                 tpnt->cmd_per_lun = setup_cmd_per_lun;
         if (setup_sg_tablesize >= 0)
                 tpnt->sg_tablesize = setup_sg_tablesize;
-
-    if (setup_hostid >= 0)
-        tpnt->this_id = setup_hostid;
-    else {
-        /* use 7 as default */
-        tpnt->this_id = 7;
-    }
+        if (setup_hostid >= 0)
+                tpnt->this_id = setup_hostid & 7;
 
 #ifdef SUPPORT_TAGS
     if (setup_use_tagged_queuing < 0)
@@ -219,15 +179,15 @@ int __init macscsi_detect(struct scsi_host_template * tpnt)
         return 0;
 
     if (macintosh_config->ident == MAC_MODEL_IIFX) {
-        mac_scsi_regp  = via1+0x8000;
-        mac_scsi_drq   = via1+0xE000;
-        mac_scsi_nodrq = via1+0xC000;
+        mac_scsi_regp  = (unsigned char *) VIA1_BASE + 0x8000;
+        mac_scsi_drq   = (unsigned char *) VIA1_BASE + 0xE000;
+        mac_scsi_nodrq = (unsigned char *) VIA1_BASE + 0xC000;
         /* The IIFX should be able to do true DMA, but pseudo-dma doesn't work */
         flags = FLAG_NO_PSEUDO_DMA;
     } else {
-        mac_scsi_regp  = via1+0x10000;
-        mac_scsi_drq   = via1+0x6000;
-        mac_scsi_nodrq = via1+0x12000;
+        mac_scsi_regp  = (unsigned char *) VIA1_BASE + 0x10000;
+        mac_scsi_drq   = (unsigned char *) VIA1_BASE + 0x6000;
+        mac_scsi_nodrq = (unsigned char *) VIA1_BASE + 0x12000;
     }
 
     if (! setup_use_pdma)
@@ -520,3 +480,5 @@ static struct scsi_host_template driver_template = {
 
 
 #include "scsi_module.c"
+
+MODULE_LICENSE("GPL");