forked from Minki/linux
f689b742f2
- Ground work for the new Power9 MMU from Aneesh Kumar K.V - Optimise FP/VMX/VSX context switching from Anton Blanchard - Various cleanups from Krzysztof Kozlowski, John Ogness, Rashmica Gupta, Russell Currey, Gavin Shan, Daniel Axtens, Michael Neuling, Andrew Donnellan - Allow wrapper to work on non-english system from Laurent Vivier - Add rN aliases to the pt_regs_offset table from Rashmica Gupta - Fix module autoload for rackmeter & axonram drivers from Luis de Bethencourt - Include KVM guest test in all interrupt vectors from Paul Mackerras - Fix DSCR inheritance over fork() from Anton Blanchard - Make value-returning atomics & {cmp}xchg* & their atomic_ versions fully ordered from Boqun Feng - Print MSR TM bits in oops messages from Michael Neuling - Add TM signal return & invalid stack selftests from Michael Neuling - Limit EPOW reset event warnings from Vipin K Parashar - Remove the Cell QPACE code from Rashmica Gupta - Append linux_banner to exception information in xmon from Rashmica Gupta - Add selftest to check if VSRs are corrupted from Rashmica Gupta - Remove broken GregorianDay() from Daniel Axtens - Import Anton's context_switch2 benchmark into selftests from Michael Ellerman - Add selftest script to test HMI functionality from Daniel Axtens - Remove obsolete OPAL v2 support from Stewart Smith - Make enter_rtas() private from Michael Ellerman - PPR exception cleanups from Michael Ellerman - Add page soft dirty tracking from Laurent Dufour - Add support for Nvlink NPUs from Alistair Popple - Add support for kexec on 476fpe from Alistair Popple - Enable kernel CPU dlpar from sysfs from Nathan Fontenot - Copy only required pieces of the mm_context_t to the paca from Michael Neuling - Add a kmsg_dumper that flushes OPAL console output on panic from Russell Currey - Implement save_stack_trace_regs() to enable kprobe stack tracing from Steven Rostedt - Add HWCAP bits for Power9 from Michael Ellerman - Fix _PAGE_PTE breaking swapoff from Aneesh Kumar K.V - Fix _PAGE_SWP_SOFT_DIRTY breaking swapoff from Hugh Dickins - scripts/recordmcount.pl: support data in text section on powerpc from Ulrich Weigand - Handle R_PPC64_ENTRY relocations in modules from Ulrich Weigand - cxl: Fix possible idr warning when contexts are released from Vaibhav Jain - cxl: use correct operator when writing pcie config space values from Andrew Donnellan - cxl: Fix DSI misses when the context owning task exits from Vaibhav Jain - cxl: fix build for GCC 4.6.x from Brian Norris - cxl: use -Werror only with CONFIG_PPC_WERROR from Brian Norris - cxl: Enable PCI device ID for future IBM CXL adapter from Uma Krishnan - Freescale updates from Scott: Highlights include moving QE code out of arch/powerpc (to be shared with arm), device tree updates, and minor fixes. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJWmIxeAAoJEFHr6jzI4aWAA+cQAIXAw4WfVWJ2V4ZK+1eKfB57 fdXG71PuXG+WYIWy71ly8keLHdzzD1NQ2OUB64bUVRq202nRgVc15ZYKRJ/FE/sP SkxaQ2AG/2kI2EflWshOi0Lu9qaZ+LMHJnszIqE/9lnGSB2kUI/cwsSXgziiMKXR XNci9v14SdDd40YV/6BSZXoxApwyq9cUbZ7rnzFLmz4hrFuKmB/L3LABDF8QcpH7 sGt/YaHGOtqP0UX7h5KQTFLGe1OPvK6NWixSXeZKQ71ED6cho1iKUEOtBA9EZeIN QM5JdHFWgX8MMRA0OHAgidkSiqO38BXjmjkVYWoIbYz7Zax3ThmrDHB4IpFwWnk3 l7WBykEXY7KEqpZzbh0GFGehZWzVZvLnNgDdvpmpk/GkPzeYKomBj7ZZfm3H1yGD BTHPwuWCTX+/K75yEVNO8aJO12wBg7DRl4IEwBgqhwU8ga4FvUOCJkm+SCxA1Dnn qlpS7qPwTXNIEfKMJcxp5X0KiwDY1EoOotd4glTN0jbeY5GEYcxe+7RQ302GrYxP zcc8EGLn8h6BtQvV3ypNHF5l6QeTW/0ZlO9c236tIuUQ5gQU39SQci7jQKsYjSzv BB1XdLHkbtIvYDkmbnr1elbeJCDbrWL9rAXRUTRyfuCzaFWTfZmfVNe8c8qwDMLk TUxMR/38aI7bLcIQjwj9 =R5bX -----END PGP SIGNATURE----- Merge tag 'powerpc-4.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: "Core: - Ground work for the new Power9 MMU from Aneesh Kumar K.V - Optimise FP/VMX/VSX context switching from Anton Blanchard Misc: - Various cleanups from Krzysztof Kozlowski, John Ogness, Rashmica Gupta, Russell Currey, Gavin Shan, Daniel Axtens, Michael Neuling, Andrew Donnellan - Allow wrapper to work on non-english system from Laurent Vivier - Add rN aliases to the pt_regs_offset table from Rashmica Gupta - Fix module autoload for rackmeter & axonram drivers from Luis de Bethencourt - Include KVM guest test in all interrupt vectors from Paul Mackerras - Fix DSCR inheritance over fork() from Anton Blanchard - Make value-returning atomics & {cmp}xchg* & their atomic_ versions fully ordered from Boqun Feng - Print MSR TM bits in oops messages from Michael Neuling - Add TM signal return & invalid stack selftests from Michael Neuling - Limit EPOW reset event warnings from Vipin K Parashar - Remove the Cell QPACE code from Rashmica Gupta - Append linux_banner to exception information in xmon from Rashmica Gupta - Add selftest to check if VSRs are corrupted from Rashmica Gupta - Remove broken GregorianDay() from Daniel Axtens - Import Anton's context_switch2 benchmark into selftests from Michael Ellerman - Add selftest script to test HMI functionality from Daniel Axtens - Remove obsolete OPAL v2 support from Stewart Smith - Make enter_rtas() private from Michael Ellerman - PPR exception cleanups from Michael Ellerman - Add page soft dirty tracking from Laurent Dufour - Add support for Nvlink NPUs from Alistair Popple - Add support for kexec on 476fpe from Alistair Popple - Enable kernel CPU dlpar from sysfs from Nathan Fontenot - Copy only required pieces of the mm_context_t to the paca from Michael Neuling - Add a kmsg_dumper that flushes OPAL console output on panic from Russell Currey - Implement save_stack_trace_regs() to enable kprobe stack tracing from Steven Rostedt - Add HWCAP bits for Power9 from Michael Ellerman - Fix _PAGE_PTE breaking swapoff from Aneesh Kumar K.V - Fix _PAGE_SWP_SOFT_DIRTY breaking swapoff from Hugh Dickins - scripts/recordmcount.pl: support data in text section on powerpc from Ulrich Weigand - Handle R_PPC64_ENTRY relocations in modules from Ulrich Weigand cxl: - cxl: Fix possible idr warning when contexts are released from Vaibhav Jain - cxl: use correct operator when writing pcie config space values from Andrew Donnellan - cxl: Fix DSI misses when the context owning task exits from Vaibhav Jain - cxl: fix build for GCC 4.6.x from Brian Norris - cxl: use -Werror only with CONFIG_PPC_WERROR from Brian Norris - cxl: Enable PCI device ID for future IBM CXL adapter from Uma Krishnan Freescale: - Freescale updates from Scott: Highlights include moving QE code out of arch/powerpc (to be shared with arm), device tree updates, and minor fixes" * tag 'powerpc-4.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (149 commits) powerpc/module: Handle R_PPC64_ENTRY relocations scripts/recordmcount.pl: support data in text section on powerpc powerpc/powernv: Fix OPAL_CONSOLE_FLUSH prototype and usages powerpc/mm: fix _PAGE_SWP_SOFT_DIRTY breaking swapoff powerpc/mm: Fix _PAGE_PTE breaking swapoff cxl: Enable PCI device ID for future IBM CXL adapter cxl: use -Werror only with CONFIG_PPC_WERROR cxl: fix build for GCC 4.6.x powerpc: Add HWCAP bits for Power9 powerpc/powernv: Reserve PE#0 on NPU powerpc/powernv: Change NPU PE# assignment powerpc/powernv: Fix update of NVLink DMA mask powerpc/powernv: Remove misleading comment in pci.c powerpc: Implement save_stack_trace_regs() to enable kprobe stack tracing powerpc: Fix build break due to paca mm_context_t changes cxl: Fix DSI misses when the context owning task exits MAINTAINERS: Update Scott Wood's e-mail address powerpc/powernv: Fix minor off-by-one error in opal_mce_check_early_recovery() powerpc: Fix style of self-test config prompts powerpc/powernv: Only delay opal_rtc_read() retry when necessary ...
186 lines
4.9 KiB
C
186 lines
4.9 KiB
C
/**
|
|
* AES CTR routines supporting VMX instructions on the Power 8
|
|
*
|
|
* Copyright (C) 2015 International Business Machines Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; version 2 only.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*
|
|
* Author: Marcelo Henrique Cerri <mhcerri@br.ibm.com>
|
|
*/
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/err.h>
|
|
#include <linux/crypto.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/hardirq.h>
|
|
#include <asm/switch_to.h>
|
|
#include <crypto/aes.h>
|
|
#include <crypto/scatterwalk.h>
|
|
#include "aesp8-ppc.h"
|
|
|
|
struct p8_aes_ctr_ctx {
|
|
struct crypto_blkcipher *fallback;
|
|
struct aes_key enc_key;
|
|
};
|
|
|
|
static int p8_aes_ctr_init(struct crypto_tfm *tfm)
|
|
{
|
|
const char *alg;
|
|
struct crypto_blkcipher *fallback;
|
|
struct p8_aes_ctr_ctx *ctx = crypto_tfm_ctx(tfm);
|
|
|
|
if (!(alg = crypto_tfm_alg_name(tfm))) {
|
|
printk(KERN_ERR "Failed to get algorithm name.\n");
|
|
return -ENOENT;
|
|
}
|
|
|
|
fallback =
|
|
crypto_alloc_blkcipher(alg, 0, CRYPTO_ALG_NEED_FALLBACK);
|
|
if (IS_ERR(fallback)) {
|
|
printk(KERN_ERR
|
|
"Failed to allocate transformation for '%s': %ld\n",
|
|
alg, PTR_ERR(fallback));
|
|
return PTR_ERR(fallback);
|
|
}
|
|
printk(KERN_INFO "Using '%s' as fallback implementation.\n",
|
|
crypto_tfm_alg_driver_name((struct crypto_tfm *) fallback));
|
|
|
|
crypto_blkcipher_set_flags(
|
|
fallback,
|
|
crypto_blkcipher_get_flags((struct crypto_blkcipher *)tfm));
|
|
ctx->fallback = fallback;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void p8_aes_ctr_exit(struct crypto_tfm *tfm)
|
|
{
|
|
struct p8_aes_ctr_ctx *ctx = crypto_tfm_ctx(tfm);
|
|
|
|
if (ctx->fallback) {
|
|
crypto_free_blkcipher(ctx->fallback);
|
|
ctx->fallback = NULL;
|
|
}
|
|
}
|
|
|
|
static int p8_aes_ctr_setkey(struct crypto_tfm *tfm, const u8 *key,
|
|
unsigned int keylen)
|
|
{
|
|
int ret;
|
|
struct p8_aes_ctr_ctx *ctx = crypto_tfm_ctx(tfm);
|
|
|
|
pagefault_disable();
|
|
enable_kernel_vsx();
|
|
ret = aes_p8_set_encrypt_key(key, keylen * 8, &ctx->enc_key);
|
|
disable_kernel_vsx();
|
|
pagefault_enable();
|
|
|
|
ret += crypto_blkcipher_setkey(ctx->fallback, key, keylen);
|
|
return ret;
|
|
}
|
|
|
|
static void p8_aes_ctr_final(struct p8_aes_ctr_ctx *ctx,
|
|
struct blkcipher_walk *walk)
|
|
{
|
|
u8 *ctrblk = walk->iv;
|
|
u8 keystream[AES_BLOCK_SIZE];
|
|
u8 *src = walk->src.virt.addr;
|
|
u8 *dst = walk->dst.virt.addr;
|
|
unsigned int nbytes = walk->nbytes;
|
|
|
|
pagefault_disable();
|
|
enable_kernel_vsx();
|
|
aes_p8_encrypt(ctrblk, keystream, &ctx->enc_key);
|
|
disable_kernel_vsx();
|
|
pagefault_enable();
|
|
|
|
crypto_xor(keystream, src, nbytes);
|
|
memcpy(dst, keystream, nbytes);
|
|
crypto_inc(ctrblk, AES_BLOCK_SIZE);
|
|
}
|
|
|
|
static int p8_aes_ctr_crypt(struct blkcipher_desc *desc,
|
|
struct scatterlist *dst,
|
|
struct scatterlist *src, unsigned int nbytes)
|
|
{
|
|
int ret;
|
|
u64 inc;
|
|
struct blkcipher_walk walk;
|
|
struct p8_aes_ctr_ctx *ctx =
|
|
crypto_tfm_ctx(crypto_blkcipher_tfm(desc->tfm));
|
|
struct blkcipher_desc fallback_desc = {
|
|
.tfm = ctx->fallback,
|
|
.info = desc->info,
|
|
.flags = desc->flags
|
|
};
|
|
|
|
if (in_interrupt()) {
|
|
ret = crypto_blkcipher_encrypt(&fallback_desc, dst, src,
|
|
nbytes);
|
|
} else {
|
|
blkcipher_walk_init(&walk, dst, src, nbytes);
|
|
ret = blkcipher_walk_virt_block(desc, &walk, AES_BLOCK_SIZE);
|
|
while ((nbytes = walk.nbytes) >= AES_BLOCK_SIZE) {
|
|
pagefault_disable();
|
|
enable_kernel_vsx();
|
|
aes_p8_ctr32_encrypt_blocks(walk.src.virt.addr,
|
|
walk.dst.virt.addr,
|
|
(nbytes &
|
|
AES_BLOCK_MASK) /
|
|
AES_BLOCK_SIZE,
|
|
&ctx->enc_key,
|
|
walk.iv);
|
|
disable_kernel_vsx();
|
|
pagefault_enable();
|
|
|
|
/* We need to update IV mostly for last bytes/round */
|
|
inc = (nbytes & AES_BLOCK_MASK) / AES_BLOCK_SIZE;
|
|
if (inc > 0)
|
|
while (inc--)
|
|
crypto_inc(walk.iv, AES_BLOCK_SIZE);
|
|
|
|
nbytes &= AES_BLOCK_SIZE - 1;
|
|
ret = blkcipher_walk_done(desc, &walk, nbytes);
|
|
}
|
|
if (walk.nbytes) {
|
|
p8_aes_ctr_final(ctx, &walk);
|
|
ret = blkcipher_walk_done(desc, &walk, 0);
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
struct crypto_alg p8_aes_ctr_alg = {
|
|
.cra_name = "ctr(aes)",
|
|
.cra_driver_name = "p8_aes_ctr",
|
|
.cra_module = THIS_MODULE,
|
|
.cra_priority = 1000,
|
|
.cra_type = &crypto_blkcipher_type,
|
|
.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | CRYPTO_ALG_NEED_FALLBACK,
|
|
.cra_alignmask = 0,
|
|
.cra_blocksize = 1,
|
|
.cra_ctxsize = sizeof(struct p8_aes_ctr_ctx),
|
|
.cra_init = p8_aes_ctr_init,
|
|
.cra_exit = p8_aes_ctr_exit,
|
|
.cra_blkcipher = {
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
.min_keysize = AES_MIN_KEY_SIZE,
|
|
.max_keysize = AES_MAX_KEY_SIZE,
|
|
.setkey = p8_aes_ctr_setkey,
|
|
.encrypt = p8_aes_ctr_crypt,
|
|
.decrypt = p8_aes_ctr_crypt,
|
|
},
|
|
};
|