diff options
| author | Nathan Lynch <nathanl@linux.ibm.com> | 2023-12-12 20:01:51 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2023-12-13 13:38:20 +0300 |
| commit | 9592aa5ad59e736727fe7894e6e820e2d851abcf (patch) | |
| tree | 33f65678491855ef5d080ac9205afbdbfae75442 /arch/powerpc/include | |
| parent | 669acc7eec223a81ea5e2420de85b61979ab7dad (diff) | |
| download | linux-9592aa5ad59e736727fe7894e6e820e2d851abcf.tar.xz | |
powerpc/rtas: Add function return status constants
Not all of the generic RTAS function statuses specified in PAPR have
symbolic constants and descriptions in rtas.h. Fix this, providing a
little more background, slightly updating the existing wording, and
improving the formatting.
Reviewed-by: "Aneesh Kumar K.V (IBM)" <aneesh.kumar@kernel.org>
Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20231212-papr-sys_rtas-vs-lockdown-v6-4-e9eafd0c8c6c@linux.ibm.com
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/rtas.h | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/arch/powerpc/include/asm/rtas.h b/arch/powerpc/include/asm/rtas.h index a7110ed52e25..08d19e6904f7 100644 --- a/arch/powerpc/include/asm/rtas.h +++ b/arch/powerpc/include/asm/rtas.h @@ -201,12 +201,25 @@ typedef struct { /* Memory set aside for sys_rtas to use with calls that need a work area. */ #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 +/* + * Common RTAS function return values, derived from the table "RTAS + * Status Word Values" in PAPR+ v2.13 7.2.8: "Return Codes". If a + * function can return a value in this table then generally it has the + * meaning listed here. More extended commentary in the documentation + * for rtas_call(). + * + * RTAS functions may use negative and positive numbers not in this + * set for function-specific error and success conditions, + * respectively. + */ +#define RTAS_SUCCESS 0 /* Success. */ +#define RTAS_HARDWARE_ERROR -1 /* Hardware or other unspecified error. */ +#define RTAS_BUSY -2 /* Retry immediately. */ +#define RTAS_INVALID_PARAMETER -3 /* Invalid indicator/domain/sensor etc. */ +#define RTAS_UNEXPECTED_STATE_CHANGE -7 /* Seems limited to EEH and slot reset. */ +#define RTAS_EXTENDED_DELAY_MIN 9900 /* Retry after delaying for ~1ms. */ +#define RTAS_EXTENDED_DELAY_MAX 9905 /* Retry after delaying for ~100s. */ +#define RTAS_ML_ISOLATION_ERROR -9000 /* Multi-level isolation error. */ /* statuses specific to ibm,suspend-me */ #define RTAS_SUSPEND_ABORTED 9000 /* Suspension aborted */ |