[PATCH 19/29] mac_scsi: Add module option to Kconfig

Finn Thain
2014-10-02T06:56:47Z

[-- Attachment #1: mac_scsi-module-option --]
[-- Type: text/plain, Size: 5624 bytes --]

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>

---
drivers/scsi/Kconfig | 2
drivers/scsi/mac_scsi.c | 112 +++++++++++++++---------------------------------
2 files changed, 38 insertions(+), 76 deletions(-)

Index: linux/drivers/scsi/Kconfig
===================================================================
--- linux.orig/drivers/scsi/Kconfig 2014-10-02 16:55:28.000000000 +1000
+++ linux/drivers/scsi/Kconfig 2014-10-02 16:56:17.000000000 +1000
@@ -1644,7 +1644,7 @@ config ATARI_SCSI_RESET_BOOT
that leave the devices with SCSI operations partway completed.

config MAC_SCSI
- bool "Macintosh NCR5380 SCSI"
+ tristate "Macintosh NCR5380 SCSI"
depends on MAC && SCSI=y
select SCSI_SPI_ATTRS
help
Index: linux/drivers/scsi/mac_scsi.c
===================================================================
--- linux.orig/drivers/scsi/mac_scsi.c 2014-10-02 16:56:17.000000000 +1000
+++ linux/drivers/scsi/mac_scsi.c 2014-10-02 16:56:17.000000000 +1000
@@ -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(str
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_ho
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_ho
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_

#include "scsi_module.c"
+
+MODULE_LICENSE("GPL");