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authorChristian Hohnstaedt <chohnstaedt@innominate.com>2009-04-12 01:01:44 -0400
committerHerbert Xu <herbert@gondor.apana.org.au>2009-04-12 01:01:44 -0400
commit295c01f90db2b8b8394e1f7cde59b96d71f98e07 (patch)
tree5751ab5864ec32015a464ab09d6c64e449e358b1 /drivers/crypto/ixp4xx_crypto.c
parent0d44dc59b2b434b29aafeae581d06f81efac7c83 (diff)
crypto: ixp4xx - check firmware for crypto support
- the loaded firmware may not support crypto at all or only support DES and 3DES but not AES or support DES, 3DES and AES. - in case of no crypto support of the firmware, the module load will fail. - in case of missing AES support, the AES algorithms are not registered and a warning is printed during module load. Signed-off-by: Christian Hohnstaedt <chohnstaedt@innominate.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/ixp4xx_crypto.c')
-rw-r--r--drivers/crypto/ixp4xx_crypto.c33
1 files changed, 32 insertions, 1 deletions
diff --git a/drivers/crypto/ixp4xx_crypto.c b/drivers/crypto/ixp4xx_crypto.c
index af9761ccf9f1..9224c1f49311 100644
--- a/drivers/crypto/ixp4xx_crypto.c
+++ b/drivers/crypto/ixp4xx_crypto.c
@@ -415,6 +415,7 @@ static void crypto_done_action(unsigned long arg)
415static int init_ixp_crypto(void) 415static int init_ixp_crypto(void)
416{ 416{
417 int ret = -ENODEV; 417 int ret = -ENODEV;
418 u32 msg[2] = { 0, 0 };
418 419
419 if (! ( ~(*IXP4XX_EXP_CFG2) & (IXP4XX_FEATURE_HASH | 420 if (! ( ~(*IXP4XX_EXP_CFG2) & (IXP4XX_FEATURE_HASH |
420 IXP4XX_FEATURE_AES | IXP4XX_FEATURE_DES))) { 421 IXP4XX_FEATURE_AES | IXP4XX_FEATURE_DES))) {
@@ -426,9 +427,35 @@ static int init_ixp_crypto(void)
426 return ret; 427 return ret;
427 428
428 if (!npe_running(npe_c)) { 429 if (!npe_running(npe_c)) {
429 npe_load_firmware(npe_c, npe_name(npe_c), dev); 430 ret = npe_load_firmware(npe_c, npe_name(npe_c), dev);
431 if (ret) {
432 return ret;
433 }
434 if (npe_recv_message(npe_c, msg, "STATUS_MSG"))
435 goto npe_error;
436 } else {
437 if (npe_send_message(npe_c, msg, "STATUS_MSG"))
438 goto npe_error;
439
440 if (npe_recv_message(npe_c, msg, "STATUS_MSG"))
441 goto npe_error;
430 } 442 }
431 443
444 switch ((msg[1]>>16) & 0xff) {
445 case 3:
446 printk(KERN_WARNING "Firmware of %s lacks AES support\n",
447 npe_name(npe_c));
448 support_aes = 0;
449 break;
450 case 4:
451 case 5:
452 support_aes = 1;
453 break;
454 default:
455 printk(KERN_ERR "Firmware of %s lacks crypto support\n",
456 npe_name(npe_c));
457 return -ENODEV;
458 }
432 /* buffer_pool will also be used to sometimes store the hmac, 459 /* buffer_pool will also be used to sometimes store the hmac,
433 * so assure it is large enough 460 * so assure it is large enough
434 */ 461 */
@@ -459,6 +486,10 @@ static int init_ixp_crypto(void)
459 486
460 qmgr_enable_irq(RECV_QID); 487 qmgr_enable_irq(RECV_QID);
461 return 0; 488 return 0;
489
490npe_error:
491 printk(KERN_ERR "%s not responding\n", npe_name(npe_c));
492 ret = -EIO;
462err: 493err:
463 if (ctx_pool) 494 if (ctx_pool)
464 dma_pool_destroy(ctx_pool); 495 dma_pool_destroy(ctx_pool);