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mac_scsi: Add module option to Kconfig
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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>
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Finn Thain authored and Christoph Hellwig committed Nov 20, 2014
1 parent 92de383 commit 6e9ae6d
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Showing 2 changed files with 38 additions and 76 deletions.
2 changes: 1 addition & 1 deletion drivers/scsi/Kconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -1615,7 +1615,7 @@ 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
Expand Down
112 changes: 37 additions & 75 deletions drivers/scsi/mac_scsi.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -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
Expand Down Expand Up @@ -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)
Expand Down Expand Up @@ -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)
Expand All @@ -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)
Expand Down Expand Up @@ -520,3 +480,5 @@ static struct scsi_host_template driver_template = {


#include "scsi_module.c"

MODULE_LICENSE("GPL");

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