a3cda6a020
commit 48f89d2a2920166c35b1c0b69917dbb0390ebec7 upstream.
IV transfer from ofifo to class2 (set up at [29][30]) is not guaranteed
to be scheduled before the data transfer from ofifo to external memory
(set up at [38]:
[29] 10FA0004 ld: ind-nfifo (len=4) imm
[30] 81F00010 <nfifo_entry: ofifo->class2 type=msg len=16>
[31] 14820004 ld: ccb2-datasz len=4 offs=0 imm
[32] 00000010 data:0x00000010
[33] 8210010D operation: cls1-op aes cbc init-final enc
[34] A8080B04 math: (seqin + math0)->vseqout len=4
[35] 28000010 seqfifold: skip len=16
[36] A8080A04 math: (seqin + math0)->vseqin len=4
[37] 2F1E0000 seqfifold: both msg1->2-last2-last1 len=vseqinsz
[38] 69300000 seqfifostr: msg len=vseqoutsz
[39] 5C20000C seqstr: ccb2 ctx len=12 offs=0
If ofifo -> external memory transfer happens first, DECO will hang
(issuing a Watchdog Timeout error, if WDOG is enabled) waiting for
data availability in ofifo for the ofifo -> c2 ififo transfer.
Make sure IV transfer happens first by waiting for all CAAM internal
transfers to end before starting payload transfer.
New descriptor with jump command inserted at [37]:
[..]
[36] A8080A04 math: (seqin + math0)->vseqin len=4
[37] A1000401 jump: jsl1 all-match[!nfifopend] offset=[01] local->[38]
[38] 2F1E0000 seqfifold: both msg1->2-last2-last1 len=vseqinsz
[39] 69300000 seqfifostr: msg len=vseqoutsz
[40] 5C20000C seqstr: ccb2 ctx len=12 offs=0
[Note: the issue is present in the descriptor from the very beginning
(cf. Fixes tag). However I've marked it v4.19+ since it's the oldest
maintained kernel that the patch applies clean against.]
Cc: <stable@vger.kernel.org> # v4.19+
Fixes:
|
||
|---|---|---|
| .. | ||
| amcc | ||
| caam | ||
| ccp | ||
| marvell | ||
| nx | ||
| qat | ||
| qce | ||
| sunxi-ss | ||
| ux500 | ||
| vmx | ||
| atmel-aes-regs.h | ||
| atmel-aes.c | ||
| atmel-sha-regs.h | ||
| atmel-sha.c | ||
| atmel-tdes-regs.h | ||
| atmel-tdes.c | ||
| bfin_crc.c | ||
| bfin_crc.h | ||
| geode-aes.c | ||
| geode-aes.h | ||
| hifn_795x.c | ||
| img-hash.c | ||
| ixp4xx_crypto.c | ||
| Kconfig | ||
| Makefile | ||
| mv_cesa.c | ||
| mv_cesa.h | ||
| mxs-dcp.c | ||
| n2_asm.S | ||
| n2_core.c | ||
| n2_core.h | ||
| omap-aes.c | ||
| omap-des.c | ||
| omap-sham.c | ||
| padlock-aes.c | ||
| padlock-sha.c | ||
| picoxcell_crypto.c | ||
| picoxcell_crypto_regs.h | ||
| s5p-sss.c | ||
| sahara.c | ||
| talitos.c | ||
| talitos.h | ||