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powerpc/rtas: export rtas_error_rc() for reuse.

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Also, #define descriptive names for common rtas return codes and use it
instead of numeric values.

Signed-off-by: Mahesh Salgaonkar <mahesh@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/169235811556.193557.1023625262204809514.stgit@jupiter
This commit is contained in:
Mahesh Salgaonkar 2023-08-18 16:59:07 +05:30 committed by Michael Ellerman
parent 0ceef6e99c
commit e160bf64e2
2 changed files with 24 additions and 20 deletions
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3
arch/powerpc/include/asm/rtas.h
View File

@ -202,7 +202,9 @@ typedef struct {
#define RTAS_USER_REGION_SIZE (64 * 1024)
/* RTAS return status codes */
#define RTAS_HARDWARE_ERROR -1 /* Hardware Error */
#define RTAS_BUSY -2 /* RTAS Busy */
#define RTAS_INVALID_PARAMETER -3 /* Invalid indicator/domain/sensor etc. */
#define RTAS_EXTENDED_DELAY_MIN 9900
#define RTAS_EXTENDED_DELAY_MAX 9905
@ -425,6 +427,7 @@ extern int rtas_set_indicator(int indicator, int index, int new_value);
extern int rtas_set_indicator_fast(int indicator, int index, int new_value);
extern void rtas_progress(char *s, unsigned short hex);
int rtas_ibm_suspend_me(int *fw_status);
int rtas_error_rc(int rtas_rc);
struct rtc_time;
extern time64_t rtas_get_boot_time(void);

41
arch/powerpc/kernel/rtas.c
View File

@ -1330,33 +1330,34 @@ bool __ref rtas_busy_delay(int status)
}
EXPORT_SYMBOL_GPL(rtas_busy_delay);
static int rtas_error_rc(int rtas_rc)
int rtas_error_rc(int rtas_rc)
{
int rc;
switch (rtas_rc) {
case -1: /* Hardware Error */
rc = -EIO;
break;
case -3: /* Bad indicator/domain/etc */
rc = -EINVAL;
break;
case -9000: /* Isolation error */
rc = -EFAULT;
break;
case -9001: /* Outstanding TCE/PTE */
rc = -EEXIST;
break;
case -9002: /* No usable slot */
rc = -ENODEV;
break;
default:
pr_err("%s: unexpected error %d\n", __func__, rtas_rc);
rc = -ERANGE;
break;
case RTAS_HARDWARE_ERROR: /* Hardware Error */
rc = -EIO;
break;
case RTAS_INVALID_PARAMETER: /* Bad indicator/domain/etc */
rc = -EINVAL;
break;
case -9000: /* Isolation error */
rc = -EFAULT;
break;
case -9001: /* Outstanding TCE/PTE */
rc = -EEXIST;
break;
case -9002: /* No usable slot */
rc = -ENODEV;
break;
default:
pr_err("%s: unexpected error %d\n", __func__, rtas_rc);
rc = -ERANGE;
break;
}
return rc;
}
EXPORT_SYMBOL_GPL(rtas_error_rc);
int rtas_get_power_level(int powerdomain, int *level)
{