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crypto/nx: Add P9 NX specific error codes for 842 engine

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This patch adds changes for checking P9 specific 842 engine
error codes. These errros are reported in coprocessor status
block (CSB) for failures.

Signed-off-by: Haren Myneni <haren@us.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Haren Myneni 2017-08-31 00:18:18 -07:00 committed by Michael Ellerman
parent f05368336b
commit 146e9f1b65
3 changed files with 29 additions and 0 deletions
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3
arch/powerpc/include/asm/icswx.h
View File

@ -69,7 +69,10 @@ struct coprocessor_completion_block {
#define CSB_CC_WR_PROTECTION (16)
#define CSB_CC_UNKNOWN_CODE (17)
#define CSB_CC_ABORT (18)
#define CSB_CC_EXCEED_BYTE_COUNT (19) /* P9 or later */
#define CSB_CC_TRANSPORT (20)
#define CSB_CC_INVALID_CRB (21) /* P9 or later */
#define CSB_CC_INVALID_DDE (30) /* P9 or later */
#define CSB_CC_SEGMENTED_DDL (31)
#define CSB_CC_PROGRESS_POINT (32)
#define CSB_CC_DDE_OVERFLOW (33)

18
drivers/crypto/nx/nx-842-powernv.c
View File

@ -243,6 +243,13 @@ static int wait_for_csb(struct nx842_workmem *wmem,
case CSB_CC_TEMPL_OVERFLOW:
CSB_ERR(csb, "Compressed data template shows data past end");
return -EINVAL;
case CSB_CC_EXCEED_BYTE_COUNT: /* P9 or later */
/*
* DDE byte count exceeds the limit specified in Maximum
* byte count register.
*/
CSB_ERR(csb, "DDE byte count exceeds the limit");
return -EINVAL;
/* these should not happen */
case CSB_CC_INVALID_ALIGN:
@ -284,9 +291,17 @@ static int wait_for_csb(struct nx842_workmem *wmem,
CSB_ERR(csb, "Too many DDEs in DDL");
return -EINVAL;
case CSB_CC_TRANSPORT:
case CSB_CC_INVALID_CRB: /* P9 or later */
/* shouldn't happen, we setup CRB correctly */
CSB_ERR(csb, "Invalid CRB");
return -EINVAL;
case CSB_CC_INVALID_DDE: /* P9 or later */
/*
* shouldn't happen, setup_direct/indirect_dde creates
* DDE right
*/
CSB_ERR(csb, "Invalid DDE");
return -EINVAL;
case CSB_CC_SEGMENTED_DDL:
/* shouldn't happen, setup_ddl creates DDL right */
CSB_ERR(csb, "Segmented DDL error");
@ -330,6 +345,9 @@ static int wait_for_csb(struct nx842_workmem *wmem,
case CSB_CC_HW:
CSB_ERR(csb, "Correctable hardware error");
return -EPROTO;
case CSB_CC_HW_EXPIRED_TIMER: /* P9 or later */
CSB_ERR(csb, "Job did not finish within allowed time");
return -EPROTO;
default:
CSB_ERR(csb, "Invalid CC %d", csb->cc);

8
drivers/crypto/nx/nx-842.h
View File

@ -76,9 +76,17 @@
#define CSB_CC_DECRYPT_OVERFLOW (64)
/* asym crypt codes */
#define CSB_CC_MINV_OVERFLOW (128)
/*
* HW error - Job did not finish in the maximum time allowed.
* Job terminated.
*/
#define CSB_CC_HW_EXPIRED_TIMER (224)
/* These are reserved for hypervisor use */
#define CSB_CC_HYP_RESERVE_START (240)
#define CSB_CC_HYP_RESERVE_END (253)
#define CSB_CC_HYP_RESERVE_P9_END (251)
/* No valid interrupt server (P9 or later). */
#define CSB_CC_HYP_RESERVE_NO_INTR_SERVER (252)
#define CSB_CC_HYP_NO_HW (254)
#define CSB_CC_HYP_HANG_ABORTED (255)