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scsi: Add function and env var to report number of scsi drives

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Add a new function to find out the number of available SCSI disks. Also
set the 'scsidevs' environment variable after each scan.

Signed-off-by: Stefan Reinauer <reinauer@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Stefan Reinauer 2012-10-29 05:23:48 +00:00 • committed by Tom Rini
parent c4fa493d3a
commit 447c031ba4
3 changed files with 13 additions and 0 deletions
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3
README
View file

@ -1041,6 +1041,9 @@ The following options need to be configured:
devices. devices.
CONFIG_SYS_SCSI_SYM53C8XX_CCF to fix clock timing (80Mhz) CONFIG_SYS_SCSI_SYM53C8XX_CCF to fix clock timing (80Mhz)
The environment variable 'scsidevs' is set to the number of
SCSI devices found during the last scan.
- NETWORK Support (PCI): - NETWORK Support (PCI):
CONFIG_E1000 CONFIG_E1000
Support for Intel 8254x/8257x gigabit chips. Support for Intel 8254x/8257x gigabit chips.

8
common/cmd_scsi.c
View file

@ -184,6 +184,14 @@ removable:
scsi_curr_dev=0; scsi_curr_dev=0;
else else
scsi_curr_dev = -1; scsi_curr_dev = -1;
printf("Found %d device(s).\n", scsi_max_devs);
setenv_ulong("scsidevs", scsi_max_devs);
}
int scsi_get_disk_count(void)
{
return scsi_max_devs;
} }
#ifdef CONFIG_PCI #ifdef CONFIG_PCI

2
include/scsi.h
View file

@ -189,6 +189,8 @@ void scsi_low_level_init(int busdevfunc);
void scsi_init(void); void scsi_init(void);
void scsi_scan(int mode); void scsi_scan(int mode);
/** @return the number of scsi disks */
int scsi_get_disk_count(void);
#define SCSI_IDENTIFY 0xC0 /* not used */ #define SCSI_IDENTIFY 0xC0 /* not used */