/* SPDX-License-Identifier: BSD-2-Clause-NetBSD AND BSD-3-Clause */
/* $NetBSD: qat.c,v 1.6 2020/06/14 23:23:12 riastradh Exp $ */
/*
* Copyright (c) 2019 Internet Initiative Japan, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Copyright(c) 2007-2019 Intel Corporation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#if 0
__KERNEL_RCSID(0, "$NetBSD: qat.c,v 1.6 2020/06/14 23:23:12 riastradh Exp $");
#endif
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/cpu.h>
#include <sys/firmware.h>
#include <sys/kernel.h>
#include <sys/mbuf.h>
#include <sys/md5.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/smp.h>
#include <sys/sysctl.h>
#include <sys/rman.h>
#include <machine/bus.h>
#include <opencrypto/cryptodev.h>
#include <opencrypto/xform.h>
#include "cryptodev_if.h"
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include "qatreg.h"
#include "qatvar.h"
#include "qat_aevar.h"
extern struct qat_hw qat_hw_c2xxx;
extern struct qat_hw qat_hw_c3xxx;
extern struct qat_hw qat_hw_c62x;
extern struct qat_hw qat_hw_d15xx;
extern struct qat_hw qat_hw_dh895xcc;
#define PCI_VENDOR_INTEL 0x8086
#define PCI_PRODUCT_INTEL_C2000_IQIA_PHYS 0x1f18
#define PCI_PRODUCT_INTEL_C3K_QAT 0x19e2
#define PCI_PRODUCT_INTEL_C3K_QAT_VF 0x19e3
#define PCI_PRODUCT_INTEL_C620_QAT 0x37c8
#define PCI_PRODUCT_INTEL_C620_QAT_VF 0x37c9
#define PCI_PRODUCT_INTEL_XEOND_QAT 0x6f54
#define PCI_PRODUCT_INTEL_XEOND_QAT_VF 0x6f55
#define PCI_PRODUCT_INTEL_DH895XCC_QAT 0x0435
#define PCI_PRODUCT_INTEL_DH895XCC_QAT_VF 0x0443
static const struct qat_product {
uint16_t qatp_vendor;
uint16_t qatp_product;
const char *qatp_name;
enum qat_chip_type qatp_chip;
const struct qat_hw *qatp_hw;
} qat_products[] = {
{ PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_C2000_IQIA_PHYS,
"Intel C2000 QuickAssist PF",
QAT_CHIP_C2XXX, &qat_hw_c2xxx },
{ PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_C3K_QAT,
"Intel C3000 QuickAssist PF",
QAT_CHIP_C3XXX, &qat_hw_c3xxx },
{ PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_C620_QAT,
"Intel C620/Xeon D-2100 QuickAssist PF",
QAT_CHIP_C62X, &qat_hw_c62x },
{ PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_XEOND_QAT,
"Intel Xeon D-1500 QuickAssist PF",
QAT_CHIP_D15XX, &qat_hw_d15xx },
{ PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_DH895XCC_QAT,
"Intel 8950 QuickAssist PCIe Adapter PF",
QAT_CHIP_DH895XCC, &qat_hw_dh895xcc },
{ 0, 0, NULL, 0, NULL },
};
/* Hash Algorithm specific structure */
/* SHA1 - 20 bytes - Initialiser state can be found in FIPS stds 180-2 */
static const uint8_t sha1_initial_state[QAT_HASH_SHA1_STATE_SIZE] = {
0x67, 0x45, 0x23, 0x01,
0xef, 0xcd, 0xab, 0x89,
0x98, 0xba, 0xdc, 0xfe,
0x10, 0x32, 0x54, 0x76,
0xc3, 0xd2, 0xe1, 0xf0
};
/* SHA 256 - 32 bytes - Initialiser state can be found in FIPS stds 180-2 */
static const uint8_t sha256_initial_state[QAT_HASH_SHA256_STATE_SIZE] = {
0x6a, 0x09, 0xe6, 0x67,
0xbb, 0x67, 0xae, 0x85,
0x3c, 0x6e, 0xf3, 0x72,
0xa5, 0x4f, 0xf5, 0x3a,
0x51, 0x0e, 0x52, 0x7f,
0x9b, 0x05, 0x68, 0x8c,
0x1f, 0x83, 0xd9, 0xab,
0x5b, 0xe0, 0xcd, 0x19
};
/* SHA 384 - 64 bytes - Initialiser state can be found in FIPS stds 180-2 */
static const uint8_t sha384_initial_state[QAT_HASH_SHA384_STATE_SIZE] = {
0xcb, 0xbb, 0x9d, 0x5d, 0xc1, 0x05, 0x9e, 0xd8,
0x62, 0x9a, 0x29, 0x2a, 0x36, 0x7c, 0xd5, 0x07,
0x91, 0x59, 0x01, 0x5a, 0x30, 0x70, 0xdd, 0x17,
0x15, 0x2f, 0xec, 0xd8, 0xf7, 0x0e, 0x59, 0x39,
0x67, 0x33, 0x26, 0x67, 0xff, 0xc0, 0x0b, 0x31,
0x8e, 0xb4, 0x4a, 0x87, 0x68, 0x58, 0x15, 0x11,
0xdb, 0x0c, 0x2e, 0x0d, 0x64, 0xf9, 0x8f, 0xa7,
0x47, 0xb5, 0x48, 0x1d, 0xbe, 0xfa, 0x4f, 0xa4
};
/* SHA 512 - 64 bytes - Initialiser state can be found in FIPS stds 180-2 */
static const uint8_t sha512_initial_state[QAT_HASH_SHA512_STATE_SIZE] = {
0x6a, 0x09, 0xe6, 0x67, 0xf3, 0xbc, 0xc9, 0x08,
0xbb, 0x67, 0xae, 0x85, 0x84, 0xca, 0xa7, 0x3b,
0x3c, 0x6e, 0xf3, 0x72, 0xfe, 0x94, 0xf8, 0x2b,
0xa5, 0x4f, 0xf5, 0x3a, 0x5f, 0x1d, 0x36, 0xf1,
0x51, 0x0e, 0x52, 0x7f, 0xad, 0xe6, 0x82, 0xd1,
0x9b, 0x05, 0x68, 0x8c, 0x2b, 0x3e, 0x6c, 0x1f,
0x1f, 0x83, 0xd9, 0xab, 0xfb, 0x41, 0xbd, 0x6b,
0x5b, 0xe0, 0xcd, 0x19, 0x13, 0x7e, 0x21, 0x79
};
static const struct qat_sym_hash_alg_info sha1_info = {
.qshai_digest_len = QAT_HASH_SHA1_DIGEST_SIZE,
.qshai_block_len = QAT_HASH_SHA1_BLOCK_SIZE,
.qshai_state_size = QAT_HASH_SHA1_STATE_SIZE,
.qshai_init_state = sha1_initial_state,
.qshai_sah = &auth_hash_hmac_sha1,
.qshai_state_offset = 0,
.qshai_state_word = 4,
};
static const struct qat_sym_hash_alg_info sha256_info = {
.qshai_digest_len = QAT_HASH_SHA256_DIGEST_SIZE,
.qshai_block_len = QAT_HASH_SHA256_BLOCK_SIZE,
.qshai_state_size = QAT_HASH_SHA256_STATE_SIZE,
.qshai_init_state = sha256_initial_state,
.qshai_sah = &auth_hash_hmac_sha2_256,
.qshai_state_offset = offsetof(SHA256_CTX, state),
.qshai_state_word = 4,
};
static const struct qat_sym_hash_alg_info sha384_info = {
.qshai_digest_len = QAT_HASH_SHA384_DIGEST_SIZE,
.qshai_block_len = QAT_HASH_SHA384_BLOCK_SIZE,
.qshai_state_size = QAT_HASH_SHA384_STATE_SIZE,
.qshai_init_state = sha384_initial_state,
.qshai_sah = &auth_hash_hmac_sha2_384,
.qshai_state_offset = offsetof(SHA384_CTX, state),
.qshai_state_word = 8,
};
static const struct qat_sym_hash_alg_info sha512_info = {
.qshai_digest_len = QAT_HASH_SHA512_DIGEST_SIZE,
.qshai_block_len = QAT_HASH_SHA512_BLOCK_SIZE,
.qshai_state_size = QAT_HASH_SHA512_STATE_SIZE,
.qshai_init_state = sha512_initial_state,
.qshai_sah = &auth_hash_hmac_sha2_512,
.qshai_state_offset = offsetof(SHA512_CTX, state),
.qshai_state_word = 8,
};
static const struct qat_sym_hash_alg_info aes_gcm_info = {
.qshai_digest_len = QAT_HASH_AES_GCM_DIGEST_SIZE,
.qshai_block_len = QAT_HASH_AES_GCM_BLOCK_SIZE,
.qshai_state_size = QAT_HASH_AES_GCM_STATE_SIZE,
.qshai_sah = &auth_hash_nist_gmac_aes_128,
};
/* Hash QAT specific structures */
static const struct qat_sym_hash_qat_info sha1_config = {
.qshqi_algo_enc = HW_AUTH_ALGO_SHA1,
.qshqi_auth_counter = QAT_HASH_SHA1_BLOCK_SIZE,
.qshqi_state1_len = HW_SHA1_STATE1_SZ,
.qshqi_state2_len = HW_SHA1_STATE2_SZ,
};
static const struct qat_sym_hash_qat_info sha256_config = {
.qshqi_algo_enc = HW_AUTH_ALGO_SHA256,
.qshqi_auth_counter = QAT_HASH_SHA256_BLOCK_SIZE,
.qshqi_state1_len = HW_SHA256_STATE1_SZ,
.qshqi_state2_len = HW_SHA256_STATE2_SZ
};
static const struct qat_sym_hash_qat_info sha384_config = {
.qshqi_algo_enc = HW_AUTH_ALGO_SHA384,
.qshqi_auth_counter = QAT_HASH_SHA384_BLOCK_SIZE,
.qshqi_state1_len = HW_SHA384_STATE1_SZ,
.qshqi_state2_len = HW_SHA384_STATE2_SZ
};
static const struct qat_sym_hash_qat_info sha512_config = {
.qshqi_algo_enc = HW_AUTH_ALGO_SHA512,
.qshqi_auth_counter = QAT_HASH_SHA512_BLOCK_SIZE,
.qshqi_state1_len = HW_SHA512_STATE1_SZ,
.qshqi_state2_len = HW_SHA512_STATE2_SZ
};
static const struct qat_sym_hash_qat_info aes_gcm_config = {
.qshqi_algo_enc = HW_AUTH_ALGO_GALOIS_128,
.qshqi_auth_counter = QAT_HASH_AES_GCM_BLOCK_SIZE,
.qshqi_state1_len = HW_GALOIS_128_STATE1_SZ,
.qshqi_state2_len =
HW_GALOIS_H_SZ + HW_GALOIS_LEN_A_SZ + HW_GALOIS_E_CTR0_SZ,
};
static const struct qat_sym_hash_def qat_sym_hash_defs[] = {
[QAT_SYM_HASH_SHA1] = { &sha1_info, &sha1_config },
[QAT_SYM_HASH_SHA256] = { &sha256_info, &sha256_config },
[QAT_SYM_HASH_SHA384] = { &sha384_info, &sha384_config },
[QAT_SYM_HASH_SHA512] = { &sha512_info, &sha512_config },
[QAT_SYM_HASH_AES_GCM] = { &aes_gcm_info, &aes_gcm_config },
};
static const struct qat_product *qat_lookup(device_t);
static int qat_probe(device_t);
static int qat_attach(device_t);
static int qat_init(struct device *);
static int qat_start(struct device *);
static int qat_detach(device_t);
static int qat_newsession(device_t dev, crypto_session_t cses,
struct cryptoini *cri);
static void qat_freesession(device_t dev, crypto_session_t cses);
static int qat_setup_msix_intr(struct qat_softc *);
static void qat_etr_init(struct qat_softc *);
static void qat_etr_deinit(struct qat_softc *);
static void qat_etr_bank_init(struct qat_softc *, int);
static void qat_etr_bank_deinit(struct qat_softc *sc, int);
static void qat_etr_ap_bank_init(struct qat_softc *);
static void qat_etr_ap_bank_set_ring_mask(uint32_t *, uint32_t, int);
static void qat_etr_ap_bank_set_ring_dest(struct qat_softc *, uint32_t *,
uint32_t, int);
static void qat_etr_ap_bank_setup_ring(struct qat_softc *,
struct qat_ring *);
static int qat_etr_verify_ring_size(uint32_t, uint32_t);
static int qat_etr_ring_intr(struct qat_softc *, struct qat_bank *,
struct qat_ring *);
static void qat_etr_bank_intr(void *);
static void qat_arb_update(struct qat_softc *, struct qat_bank *);
static struct qat_sym_cookie *qat_crypto_alloc_sym_cookie(
struct qat_crypto_bank *);
static void qat_crypto_free_sym_cookie(struct qat_crypto_bank *,
struct qat_sym_cookie *);
static int qat_crypto_setup_ring(struct qat_softc *,
struct qat_crypto_bank *);
static int qat_crypto_bank_init(struct qat_softc *,
struct qat_crypto_bank *);
static int qat_crypto_init(struct qat_softc *);
static void qat_crypto_deinit(struct qat_softc *);
static int qat_crypto_start(struct qat_softc *);
static void qat_crypto_stop(struct qat_softc *);
static int qat_crypto_sym_rxintr(struct qat_softc *, void *, void *);
static MALLOC_DEFINE(M_QAT, "qat", "Intel QAT driver");
static const struct qat_product *
qat_lookup(device_t dev)
{
const struct qat_product *qatp;
for (qatp = qat_products; qatp->qatp_name != NULL; qatp++) {
if (pci_get_vendor(dev) == qatp->qatp_vendor &&
pci_get_device(dev) == qatp->qatp_product)
return qatp;
}
return NULL;
}
static int
qat_probe(device_t dev)
{
const struct qat_product *prod;
prod = qat_lookup(dev);
if (prod != NULL) {
device_set_desc(dev, prod->qatp_name);
return BUS_PROBE_DEFAULT;
}
return ENXIO;
}
static int
qat_attach(device_t dev)
{
struct qat_softc *sc = device_get_softc(dev);
const struct qat_product *qatp;
bus_size_t msixtbl_offset;
int bar, count, error, i, msixoff, msixtbl_bar;
sc->sc_dev = dev;
sc->sc_rev = pci_get_revid(dev);
sc->sc_crypto.qcy_cid = -1;
qatp = qat_lookup(dev);
memcpy(&sc->sc_hw, qatp->qatp_hw, sizeof(struct qat_hw));
/* Determine active accelerators and engines */
sc->sc_accel_mask = sc->sc_hw.qhw_get_accel_mask(sc);
sc->sc_ae_mask = sc->sc_hw.qhw_get_ae_mask(sc);
sc->sc_accel_num = 0;
for (i = 0; i < sc->sc_hw.qhw_num_accel; i++) {
if (sc->sc_accel_mask & (1 << i))
sc->sc_accel_num++;
}
sc->sc_ae_num = 0;
for (i = 0; i < sc->sc_hw.qhw_num_engines; i++) {
if (sc->sc_ae_mask & (1 << i))
sc->sc_ae_num++;
}
if (!sc->sc_accel_mask || (sc->sc_ae_mask & 0x01) == 0) {
device_printf(sc->sc_dev, "couldn't find acceleration");
goto fail;
}
MPASS(sc->sc_accel_num <= MAX_NUM_ACCEL);
MPASS(sc->sc_ae_num <= MAX_NUM_AE);
/* Determine SKU and capabilities */
sc->sc_sku = sc->sc_hw.qhw_get_sku(sc);
sc->sc_accel_cap = sc->sc_hw.qhw_get_accel_cap(sc);
sc->sc_fw_uof_name = sc->sc_hw.qhw_get_fw_uof_name(sc);
/* Map BARs */
msixtbl_bar = 0;
msixtbl_offset = 0;
if (pci_find_cap(dev, PCIY_MSIX, &msixoff) == 0) {
uint32_t msixtbl;
msixtbl = pci_read_config(dev, msixoff + PCIR_MSIX_TABLE, 4);
msixtbl_offset = msixtbl & ~PCIM_MSIX_BIR_MASK;
msixtbl_bar = PCIR_BAR(msixtbl & PCIM_MSIX_BIR_MASK);
}
i = 0;
if (sc->sc_hw.qhw_sram_bar_id != NO_PCI_REG) {
MPASS(sc->sc_hw.qhw_sram_bar_id == 0);
uint32_t fusectl = pci_read_config(dev, FUSECTL_REG, 4);
/* Skip SRAM BAR */
i = (fusectl & FUSECTL_MASK) ? 1 : 0;
}
for (bar = 0; bar < PCIR_MAX_BAR_0; bar++) {
uint32_t val = pci_read_config(dev, PCIR_BAR(bar), 4);
if (val == 0 || !PCI_BAR_MEM(val))
continue;
sc->sc_rid[i] = PCIR_BAR(bar);
sc->sc_res[i] = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&sc->sc_rid[i], RF_ACTIVE);
if (sc->sc_res[i] == NULL) {
device_printf(dev, "couldn't map BAR %d\n", bar);
goto fail;
}
sc->sc_csrt[i] = rman_get_bustag(sc->sc_res[i]);
sc->sc_csrh[i] = rman_get_bushandle(sc->sc_res[i]);
i++;
if ((val & PCIM_BAR_MEM_TYPE) == PCIM_BAR_MEM_64)
bar++;
}
pci_enable_busmaster(dev);
count = sc->sc_hw.qhw_num_banks + 1;
if (pci_msix_count(dev) < count) {
device_printf(dev, "insufficient MSI-X vectors (%d vs. %d)\n",
pci_msix_count(dev), count);
goto fail;
}
error = pci_alloc_msix(dev, &count);
if (error != 0) {
device_printf(dev, "failed to allocate MSI-X vectors\n");
goto fail;
}
error = qat_init(dev);
if (error == 0)
return 0;
fail:
qat_detach(dev);
return ENXIO;
}
static int
qat_init(device_t dev)
{
struct qat_softc *sc = device_get_softc(dev);
int error;
qat_etr_init(sc);
if (sc->sc_hw.qhw_init_admin_comms != NULL &&
(error = sc->sc_hw.qhw_init_admin_comms(sc)) != 0) {
device_printf(sc->sc_dev,
"Could not initialize admin comms: %d\n", error);
return error;
}
if (sc->sc_hw.qhw_init_arb != NULL &&
(error = sc->sc_hw.qhw_init_arb(sc)) != 0) {
device_printf(sc->sc_dev,
"Could not initialize hw arbiter: %d\n", error);
return error;
}
error = qat_ae_init(sc);
if (error) {
device_printf(sc->sc_dev,
"Could not initialize Acceleration Engine: %d\n", error);
return error;
}
error = qat_aefw_load(sc);
if (error) {
device_printf(sc->sc_dev,
"Could not load firmware: %d\n", error);
return error;
}
error = qat_setup_msix_intr(sc);
if (error) {
device_printf(sc->sc_dev,
"Could not setup interrupts: %d\n", error);
return error;
}
sc->sc_hw.qhw_enable_intr(sc);
error = qat_crypto_init(sc);
if (error) {
device_printf(sc->sc_dev,
"Could not initialize service: %d\n", error);
return error;
}
if (sc->sc_hw.qhw_enable_error_correction != NULL)
sc->sc_hw.qhw_enable_error_correction(sc);
if (sc->sc_hw.qhw_set_ssm_wdtimer != NULL &&
(error = sc->sc_hw.qhw_set_ssm_wdtimer(sc)) != 0) {
device_printf(sc->sc_dev,
"Could not initialize watchdog timer: %d\n", error);
return error;
}
error = qat_start(dev);
if (error) {
device_printf(sc->sc_dev,
"Could not start: %d\n", error);
return error;
}
return 0;
}
static int
qat_start(device_t dev)
{
struct qat_softc *sc = device_get_softc(dev);
int error;
error = qat_ae_start(sc);
if (error)
return error;
if (sc->sc_hw.qhw_send_admin_init != NULL &&
(error = sc->sc_hw.qhw_send_admin_init(sc)) != 0) {
return error;
}
error = qat_crypto_start(sc);
if (error)
return error;
return 0;
}
static int
qat_detach(device_t dev)
{
struct qat_softc *sc;
int bar, i;
sc = device_get_softc(dev);
qat_crypto_stop(sc);
qat_crypto_deinit(sc);
qat_aefw_unload(sc);
if (sc->sc_etr_banks != NULL) {
for (i = 0; i < sc->sc_hw.qhw_num_banks; i++) {
struct qat_bank *qb = &sc->sc_etr_banks[i];
if (qb->qb_ih_cookie != NULL)
(void)bus_teardown_intr(dev, qb->qb_ih,
qb->qb_ih_cookie);
if (qb->qb_ih != NULL)
(void)bus_release_resource(dev, SYS_RES_IRQ,
i + 1, qb->qb_ih);
}
}
if (sc->sc_ih_cookie != NULL) {
(void)bus_teardown_intr(dev, sc->sc_ih, sc->sc_ih_cookie);
sc->sc_ih_cookie = NULL;
}
if (sc->sc_ih != NULL) {
(void)bus_release_resource(dev, SYS_RES_IRQ,
sc->sc_hw.qhw_num_banks + 1, sc->sc_ih);
sc->sc_ih = NULL;
}
pci_release_msi(dev);
qat_etr_deinit(sc);
for (bar = 0; bar < MAX_BARS; bar++) {
if (sc->sc_res[bar] != NULL) {
(void)bus_release_resource(dev, SYS_RES_MEMORY,
sc->sc_rid[bar], sc->sc_res[bar]);
sc->sc_res[bar] = NULL;
}
}
return 0;
}
void *
qat_alloc_mem(size_t size)
{
return (malloc(size, M_QAT, M_WAITOK | M_ZERO));
}
void
qat_free_mem(void *ptr)
{
free(ptr, M_QAT);
}
static void
qat_alloc_dmamem_cb(void *arg, bus_dma_segment_t *segs, int nseg,
int error)
{
struct qat_dmamem *qdm;
if (error != 0)
return;
KASSERT(nseg == 1, ("%s: nsegs is %d", __func__, nseg));
qdm = arg;
qdm->qdm_dma_seg = segs[0];
}
int
qat_alloc_dmamem(struct qat_softc *sc, struct qat_dmamem *qdm,
int nseg, bus_size_t size, bus_size_t alignment)
{
int error;
KASSERT(qdm->qdm_dma_vaddr == NULL,
("%s: DMA memory descriptor in use", __func__));
error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev),
alignment, 0, /* alignment, boundary */
BUS_SPACE_MAXADDR, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
size, /* maxsize */
nseg, /* nsegments */
size, /* maxsegsize */
BUS_DMA_COHERENT, /* flags */
NULL, NULL, /* lockfunc, lockarg */
&qdm->qdm_dma_tag);
if (error != 0)
return error;
error = bus_dmamem_alloc(qdm->qdm_dma_tag, &qdm->qdm_dma_vaddr,
BUS_DMA_NOWAIT | BUS_DMA_ZERO | BUS_DMA_COHERENT,
&qdm->qdm_dma_map);
if (error != 0) {
device_printf(sc->sc_dev,
"couldn't allocate dmamem, error = %d\n", error);
goto fail_0;
}
error = bus_dmamap_load(qdm->qdm_dma_tag, qdm->qdm_dma_map,
qdm->qdm_dma_vaddr, size, qat_alloc_dmamem_cb, qdm,
BUS_DMA_NOWAIT);
if (error) {
device_printf(sc->sc_dev,
"couldn't load dmamem map, error = %d\n", error);
goto fail_1;
}
return 0;
fail_1:
bus_dmamem_free(qdm->qdm_dma_tag, qdm->qdm_dma_vaddr, qdm->qdm_dma_map);
fail_0:
bus_dma_tag_destroy(qdm->qdm_dma_tag);
return error;
}
void
qat_free_dmamem(struct qat_softc *sc, struct qat_dmamem *qdm)
{
if (qdm->qdm_dma_tag != NULL) {
bus_dmamap_unload(qdm->qdm_dma_tag, qdm->qdm_dma_map);
bus_dmamem_free(qdm->qdm_dma_tag, qdm->qdm_dma_vaddr,
qdm->qdm_dma_map);
bus_dma_tag_destroy(qdm->qdm_dma_tag);
explicit_bzero(qdm, sizeof(*qdm));
}
}
static int
qat_setup_msix_intr(struct qat_softc *sc)
{
device_t dev;
int error, i, rid;
dev = sc->sc_dev;
for (i = 1; i <= sc->sc_hw.qhw_num_banks; i++) {
struct qat_bank *qb = &sc->sc_etr_banks[i - 1];
rid = i;
qb->qb_ih = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
RF_ACTIVE);
if (qb->qb_ih == NULL) {
device_printf(dev,
"failed to allocate bank intr resource\n");
return ENXIO;
}
error = bus_setup_intr(dev, qb->qb_ih,
INTR_TYPE_NET | INTR_MPSAFE, NULL, qat_etr_bank_intr, qb,
&qb->qb_ih_cookie);
if (error != 0) {
device_printf(dev, "failed to set up bank intr\n");
return error;
}
error = bus_bind_intr(dev, qb->qb_ih, (i - 1) % mp_ncpus);
if (error != 0)
device_printf(dev, "failed to bind intr %d\n", i);
}
rid = i;
sc->sc_ih = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
RF_ACTIVE);
if (sc->sc_ih == NULL)
return ENXIO;
error = bus_setup_intr(dev, sc->sc_ih, INTR_TYPE_NET | INTR_MPSAFE,
NULL, qat_ae_cluster_intr, sc, &sc->sc_ih_cookie);
return error;
}
static void
qat_etr_init(struct qat_softc *sc)
{
int i;
sc->sc_etr_banks = qat_alloc_mem(
sizeof(struct qat_bank) * sc->sc_hw.qhw_num_banks);
for (i = 0; i < sc->sc_hw.qhw_num_banks; i++)
qat_etr_bank_init(sc, i);
if (sc->sc_hw.qhw_num_ap_banks) {
sc->sc_etr_ap_banks = qat_alloc_mem(
sizeof(struct qat_ap_bank) * sc->sc_hw.qhw_num_ap_banks);
qat_etr_ap_bank_init(sc);
}
}
static void
qat_etr_deinit(struct qat_softc *sc)
{
int i;
if (sc->sc_etr_banks != NULL) {
for (i = 0; i < sc->sc_hw.qhw_num_banks; i++)
qat_etr_bank_deinit(sc, i);
qat_free_mem(sc->sc_etr_banks);
sc->sc_etr_banks = NULL;
}
if (sc->sc_etr_ap_banks != NULL) {
qat_free_mem(sc->sc_etr_ap_banks);
sc->sc_etr_ap_banks = NULL;
}
}
static void
qat_etr_bank_init(struct qat_softc *sc, int bank)
{
struct qat_bank *qb = &sc->sc_etr_banks[bank];
int i, tx_rx_gap = sc->sc_hw.qhw_tx_rx_gap;
MPASS(bank < sc->sc_hw.qhw_num_banks);
mtx_init(&qb->qb_bank_mtx, "qb bank", NULL, MTX_DEF);
qb->qb_sc = sc;
qb->qb_bank = bank;
qb->qb_coalescing_time = COALESCING_TIME_INTERVAL_DEFAULT;
/* Clean CSRs for all rings within the bank */
for (i = 0; i < sc->sc_hw.qhw_num_rings_per_bank; i++) {
struct qat_ring *qr = &qb->qb_et_rings[i];
qat_etr_bank_ring_write_4(sc, bank, i,
ETR_RING_CONFIG, 0);
qat_etr_bank_ring_base_write_8(sc, bank, i, 0);
if (sc->sc_hw.qhw_tx_rings_mask & (1 << i)) {
qr->qr_inflight = qat_alloc_mem(sizeof(uint32_t));
} else if (sc->sc_hw.qhw_tx_rings_mask &
(1 << (i - tx_rx_gap))) {
/* Share inflight counter with rx and tx */
qr->qr_inflight =
qb->qb_et_rings[i - tx_rx_gap].qr_inflight;
}
}
if (sc->sc_hw.qhw_init_etr_intr != NULL) {
sc->sc_hw.qhw_init_etr_intr(sc, bank);
} else {
/* common code in qat 1.7 */
qat_etr_bank_write_4(sc, bank, ETR_INT_REG,
ETR_INT_REG_CLEAR_MASK);
for (i = 0; i < sc->sc_hw.qhw_num_rings_per_bank /
ETR_RINGS_PER_INT_SRCSEL; i++) {
qat_etr_bank_write_4(sc, bank, ETR_INT_SRCSEL +
(i * ETR_INT_SRCSEL_NEXT_OFFSET),
ETR_INT_SRCSEL_MASK);
}
}
}
static void
qat_etr_bank_deinit(struct qat_softc *sc, int bank)
{
struct qat_bank *qb;
struct qat_ring *qr;
int i;
qb = &sc->sc_etr_banks[bank];
for (i = 0; i < sc->sc_hw.qhw_num_rings_per_bank; i++) {
if (sc->sc_hw.qhw_tx_rings_mask & (1 << i)) {
qr = &qb->qb_et_rings[i];
qat_free_mem(qr->qr_inflight);
}
}
}
static void
qat_etr_ap_bank_init(struct qat_softc *sc)
{
int ap_bank;
for (ap_bank = 0; ap_bank < sc->sc_hw.qhw_num_ap_banks; ap_bank++) {
struct qat_ap_bank *qab = &sc->sc_etr_ap_banks[ap_bank];
qat_etr_ap_bank_write_4(sc, ap_bank, ETR_AP_NF_MASK,
ETR_AP_NF_MASK_INIT);
qat_etr_ap_bank_write_4(sc, ap_bank, ETR_AP_NF_DEST, 0);
qat_etr_ap_bank_write_4(sc, ap_bank, ETR_AP_NE_MASK,
ETR_AP_NE_MASK_INIT);
qat_etr_ap_bank_write_4(sc, ap_bank, ETR_AP_NE_DEST, 0);
memset(qab, 0, sizeof(*qab));
}
}
static void
qat_etr_ap_bank_set_ring_mask(uint32_t *ap_mask, uint32_t ring, int set_mask)
{
if (set_mask)
*ap_mask |= (1 << ETR_RING_NUMBER_IN_AP_BANK(ring));
else
*ap_mask &= ~(1 << ETR_RING_NUMBER_IN_AP_BANK(ring));
}
static void
qat_etr_ap_bank_set_ring_dest(struct qat_softc *sc, uint32_t *ap_dest,
uint32_t ring, int set_dest)
{
uint32_t ae_mask;
uint8_t mailbox, ae, nae;
uint8_t *dest = (uint8_t *)ap_dest;
mailbox = ETR_RING_AP_MAILBOX_NUMBER(ring);
nae = 0;
ae_mask = sc->sc_ae_mask;
for (ae = 0; ae < sc->sc_hw.qhw_num_engines; ae++) {
if ((ae_mask & (1 << ae)) == 0)
continue;
if (set_dest) {
dest[nae] = __SHIFTIN(ae, ETR_AP_DEST_AE) |
__SHIFTIN(mailbox, ETR_AP_DEST_MAILBOX) |
ETR_AP_DEST_ENABLE;
} else {
dest[nae] = 0;
}
nae++;
if (nae == ETR_MAX_AE_PER_MAILBOX)
break;
}
}
static void
qat_etr_ap_bank_setup_ring(struct qat_softc *sc, struct qat_ring *qr)
{
struct qat_ap_bank *qab;
int ap_bank;
if (sc->sc_hw.qhw_num_ap_banks == 0)
return;
ap_bank = ETR_RING_AP_BANK_NUMBER(qr->qr_ring);
MPASS(ap_bank < sc->sc_hw.qhw_num_ap_banks);
qab = &sc->sc_etr_ap_banks[ap_bank];
if (qr->qr_cb == NULL) {
qat_etr_ap_bank_set_ring_mask(&qab->qab_ne_mask, qr->qr_ring, 1);
if (!qab->qab_ne_dest) {
qat_etr_ap_bank_set_ring_dest(sc, &qab->qab_ne_dest,
qr->qr_ring, 1);
qat_etr_ap_bank_write_4(sc, ap_bank, ETR_AP_NE_DEST,
qab->qab_ne_dest);
}
} else {
qat_etr_ap_bank_set_ring_mask(&qab->qab_nf_mask, qr->qr_ring, 1);
if (!qab->qab_nf_dest) {
qat_etr_ap_bank_set_ring_dest(sc, &qab->qab_nf_dest,
qr->qr_ring, 1);
qat_etr_ap_bank_write_4(sc, ap_bank, ETR_AP_NF_DEST,
qab->qab_nf_dest);
}
}
}
static int
qat_etr_verify_ring_size(uint32_t msg_size, uint32_t num_msgs)
{
int i = QAT_MIN_RING_SIZE;
for (; i <= QAT_MAX_RING_SIZE; i++)
if ((msg_size * num_msgs) == QAT_SIZE_TO_RING_SIZE_IN_BYTES(i))
return i;
return QAT_DEFAULT_RING_SIZE;
}
int
qat_etr_setup_ring(struct qat_softc *sc, int bank, uint32_t ring,
uint32_t num_msgs, uint32_t msg_size, qat_cb_t cb, void *cb_arg,
const char *name, struct qat_ring **rqr)
{
struct qat_bank *qb;
struct qat_ring *qr = NULL;
int error;
uint32_t ring_size_bytes, ring_config;
uint64_t ring_base;
uint32_t wm_nf = ETR_RING_CONFIG_NEAR_WM_512;
uint32_t wm_ne = ETR_RING_CONFIG_NEAR_WM_0;
MPASS(bank < sc->sc_hw.qhw_num_banks);
/* Allocate a ring from specified bank */
qb = &sc->sc_etr_banks[bank];
if (ring >= sc->sc_hw.qhw_num_rings_per_bank)
return EINVAL;
if (qb->qb_allocated_rings & (1 << ring))
return ENOENT;
qr = &qb->qb_et_rings[ring];
qb->qb_allocated_rings |= 1 << ring;
/* Initialize allocated ring */
qr->qr_ring = ring;
qr->qr_bank = bank;
qr->qr_name = name;
qr->qr_ring_id = qr->qr_bank * sc->sc_hw.qhw_num_rings_per_bank + ring;
qr->qr_ring_mask = (1 << ring);
qr->qr_cb = cb;
qr->qr_cb_arg = cb_arg;
/* Setup the shadow variables */
qr->qr_head = 0;
qr->qr_tail = 0;
qr->qr_msg_size = QAT_BYTES_TO_MSG_SIZE(msg_size);
qr->qr_ring_size = qat_etr_verify_ring_size(msg_size, num_msgs);
/*
* To make sure that ring is alligned to ring size allocate
* at least 4k and then tell the user it is smaller.
*/
ring_size_bytes = QAT_SIZE_TO_RING_SIZE_IN_BYTES(qr->qr_ring_size);
ring_size_bytes = QAT_RING_SIZE_BYTES_MIN(ring_size_bytes);
error = qat_alloc_dmamem(sc, &qr->qr_dma, 1, ring_size_bytes,
ring_size_bytes);
if (error)
return error;
qr->qr_ring_vaddr = qr->qr_dma.qdm_dma_vaddr;
qr->qr_ring_paddr = qr->qr_dma.qdm_dma_seg.ds_addr;
memset(qr->qr_ring_vaddr, QAT_RING_PATTERN,
qr->qr_dma.qdm_dma_seg.ds_len);
bus_dmamap_sync(qr->qr_dma.qdm_dma_tag, qr->qr_dma.qdm_dma_map,
BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
if (cb == NULL) {
ring_config = ETR_RING_CONFIG_BUILD(qr->qr_ring_size);
} else {
ring_config =
ETR_RING_CONFIG_BUILD_RESP(qr->qr_ring_size, wm_nf, wm_ne);
}
qat_etr_bank_ring_write_4(sc, bank, ring, ETR_RING_CONFIG, ring_config);
ring_base = ETR_RING_BASE_BUILD(qr->qr_ring_paddr, qr->qr_ring_size);
qat_etr_bank_ring_base_write_8(sc, bank, ring, ring_base);
if (sc->sc_hw.qhw_init_arb != NULL)
qat_arb_update(sc, qb);
mtx_init(&qr->qr_ring_mtx, "qr ring", NULL, MTX_DEF);
qat_etr_ap_bank_setup_ring(sc, qr);
if (cb != NULL) {
uint32_t intr_mask;
qb->qb_intr_mask |= qr->qr_ring_mask;
intr_mask = qb->qb_intr_mask;
qat_etr_bank_write_4(sc, bank, ETR_INT_COL_EN, intr_mask);
qat_etr_bank_write_4(sc, bank, ETR_INT_COL_CTL,
ETR_INT_COL_CTL_ENABLE | qb->qb_coalescing_time);
}
*rqr = qr;
return 0;
}
static inline u_int
qat_modulo(u_int data, u_int shift)
{
u_int div = data >> shift;
u_int mult = div << shift;
return data - mult;
}
int
qat_etr_put_msg(struct qat_softc *sc, struct qat_ring *qr, uint32_t *msg)
{
uint32_t inflight;
uint32_t *addr;
mtx_lock(&qr->qr_ring_mtx);
inflight = atomic_fetchadd_32(qr->qr_inflight, 1) + 1;
if (inflight > QAT_MAX_INFLIGHTS(qr->qr_ring_size, qr->qr_msg_size)) {
atomic_subtract_32(qr->qr_inflight, 1);
qr->qr_need_wakeup = true;
mtx_unlock(&qr->qr_ring_mtx);
counter_u64_add(sc->sc_ring_full_restarts, 1);
return ERESTART;
}
addr = (uint32_t *)((uintptr_t)qr->qr_ring_vaddr + qr->qr_tail);
memcpy(addr, msg, QAT_MSG_SIZE_TO_BYTES(qr->qr_msg_size));
bus_dmamap_sync(qr->qr_dma.qdm_dma_tag, qr->qr_dma.qdm_dma_map,
BUS_DMASYNC_PREWRITE);
qr->qr_tail = qat_modulo(qr->qr_tail +
QAT_MSG_SIZE_TO_BYTES(qr->qr_msg_size),
QAT_RING_SIZE_MODULO(qr->qr_ring_size));
qat_etr_bank_ring_write_4(sc, qr->qr_bank, qr->qr_ring,
ETR_RING_TAIL_OFFSET, qr->qr_tail);
mtx_unlock(&qr->qr_ring_mtx);
return 0;
}
static int
qat_etr_ring_intr(struct qat_softc *sc, struct qat_bank *qb,
struct qat_ring *qr)
{
uint32_t *msg, nmsg = 0;
int handled = 0;
bool blocked = false;
mtx_lock(&qr->qr_ring_mtx);
msg = (uint32_t *)((uintptr_t)qr->qr_ring_vaddr + qr->qr_head);
bus_dmamap_sync(qr->qr_dma.qdm_dma_tag, qr->qr_dma.qdm_dma_map,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
while (atomic_load_32(msg) != ETR_RING_EMPTY_ENTRY_SIG) {
atomic_subtract_32(qr->qr_inflight, 1);
if (qr->qr_cb != NULL) {
mtx_unlock(&qr->qr_ring_mtx);
handled |= qr->qr_cb(sc, qr->qr_cb_arg, msg);
mtx_lock(&qr->qr_ring_mtx);
}
atomic_store_32(msg, ETR_RING_EMPTY_ENTRY_SIG);
qr->qr_head = qat_modulo(qr->qr_head +
QAT_MSG_SIZE_TO_BYTES(qr->qr_msg_size),
QAT_RING_SIZE_MODULO(qr->qr_ring_size));
nmsg++;
msg = (uint32_t *)((uintptr_t)qr->qr_ring_vaddr + qr->qr_head);
}
bus_dmamap_sync(qr->qr_dma.qdm_dma_tag, qr->qr_dma.qdm_dma_map,
BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
if (nmsg > 0) {
qat_etr_bank_ring_write_4(sc, qr->qr_bank, qr->qr_ring,
ETR_RING_HEAD_OFFSET, qr->qr_head);
if (qr->qr_need_wakeup) {
blocked = true;
qr->qr_need_wakeup = false;
}
}
mtx_unlock(&qr->qr_ring_mtx);
if (blocked)
crypto_unblock(sc->sc_crypto.qcy_cid, CRYPTO_SYMQ);
return handled;
}
static void
qat_etr_bank_intr(void *arg)
{
struct qat_bank *qb = arg;
struct qat_softc *sc = qb->qb_sc;
uint32_t estat;
int i, handled = 0;
mtx_lock(&qb->qb_bank_mtx);
qat_etr_bank_write_4(sc, qb->qb_bank, ETR_INT_COL_CTL, 0);
/* Now handle all the responses */
estat = ~qat_etr_bank_read_4(sc, qb->qb_bank, ETR_E_STAT);
estat &= qb->qb_intr_mask;
qat_etr_bank_write_4(sc, qb->qb_bank, ETR_INT_COL_CTL,
ETR_INT_COL_CTL_ENABLE | qb->qb_coalescing_time);
mtx_unlock(&qb->qb_bank_mtx);
while ((i = ffs(estat)) != 0) {
struct qat_ring *qr = &qb->qb_et_rings[--i];
estat &= ~(1 << i);
handled |= qat_etr_ring_intr(sc, qb, qr);
}
}
void
qat_arb_update(struct qat_softc *sc, struct qat_bank *qb)
{
qat_arb_ringsrvarben_write_4(sc, qb->qb_bank,
qb->qb_allocated_rings & 0xff);
}
static struct qat_sym_cookie *
qat_crypto_alloc_sym_cookie(struct qat_crypto_bank *qcb)
{
struct qat_sym_cookie *qsc;
mtx_lock(&qcb->qcb_bank_mtx);
if (qcb->qcb_symck_free_count == 0) {
mtx_unlock(&qcb->qcb_bank_mtx);
return NULL;
}
qsc = qcb->qcb_symck_free[--qcb->qcb_symck_free_count];
mtx_unlock(&qcb->qcb_bank_mtx);
return qsc;
}
static void
qat_crypto_free_sym_cookie(struct qat_crypto_bank *qcb,
struct qat_sym_cookie *qsc)
{
explicit_bzero(qsc->qsc_iv_buf, sizeof(qsc->qsc_iv_buf));
explicit_bzero(qsc->qsc_auth_res, sizeof(qsc->qsc_auth_res));
mtx_lock(&qcb->qcb_bank_mtx);
qcb->qcb_symck_free[qcb->qcb_symck_free_count++] = qsc;
mtx_unlock(&qcb->qcb_bank_mtx);
}
void
qat_memcpy_htobe64(void *dst, const void *src, size_t len)
{
uint64_t *dst0 = dst;
const uint64_t *src0 = src;
size_t i;
MPASS(len % sizeof(*dst0) == 0);
for (i = 0; i < len / sizeof(*dst0); i++)
*(dst0 + i) = htobe64(*(src0 + i));
}
void
qat_memcpy_htobe32(void *dst, const void *src, size_t len)
{
uint32_t *dst0 = dst;
const uint32_t *src0 = src;
size_t i;
MPASS(len % sizeof(*dst0) == 0);
for (i = 0; i < len / sizeof(*dst0); i++)
*(dst0 + i) = htobe32(*(src0 + i));
}
void
qat_memcpy_htobe(void *dst, const void *src, size_t len, uint32_t wordbyte)
{
switch (wordbyte) {
case 4:
qat_memcpy_htobe32(dst, src, len);
break;
case 8:
qat_memcpy_htobe64(dst, src, len);
break;
default:
panic("invalid word size %u", wordbyte);
}
}
void
qat_crypto_gmac_precompute(const struct qat_crypto_desc *desc,
const uint8_t *key, int klen, const struct qat_sym_hash_def *hash_def,
uint8_t *state)
{
uint32_t ks[4 * (RIJNDAEL_MAXNR + 1)];
char zeros[AES_BLOCK_LEN];
int rounds;
memset(zeros, 0, sizeof(zeros));
rounds = rijndaelKeySetupEnc(ks, key, klen * NBBY);
rijndaelEncrypt(ks, rounds, zeros, state);
explicit_bzero(ks, sizeof(ks));
}
void
qat_crypto_hmac_precompute(const struct qat_crypto_desc *desc,
const uint8_t *key, int klen, const struct qat_sym_hash_def *hash_def,
uint8_t *state1, uint8_t *state2)
{
union authctx ctx;
const struct auth_hash *sah = hash_def->qshd_alg->qshai_sah;
uint32_t state_offset = hash_def->qshd_alg->qshai_state_offset;
uint32_t state_size = hash_def->qshd_alg->qshai_state_size;
uint32_t state_word = hash_def->qshd_alg->qshai_state_word;
hmac_init_ipad(sah, key, klen, &ctx);
qat_memcpy_htobe(state1, (uint8_t *)&ctx + state_offset, state_size,
state_word);
hmac_init_opad(sah, key, klen, &ctx);
qat_memcpy_htobe(state2, (uint8_t *)&ctx + state_offset, state_size,
state_word);
explicit_bzero(&ctx, sizeof(ctx));
}
static enum hw_cipher_algo
qat_aes_cipher_algo(int klen)
{
switch (klen) {
case HW_AES_128_KEY_SZ * 8:
return HW_CIPHER_ALGO_AES128;
case HW_AES_192_KEY_SZ * 8:
return HW_CIPHER_ALGO_AES192;
case HW_AES_256_KEY_SZ * 8:
return HW_CIPHER_ALGO_AES256;
default:
panic("invalid key length %d", klen);
}
}
uint16_t
qat_crypto_load_cipher_session(const struct qat_crypto_desc *desc,
const struct qat_session *qs)
{
enum hw_cipher_algo algo;
enum hw_cipher_dir dir;
enum hw_cipher_convert key_convert;
enum hw_cipher_mode mode;
dir = desc->qcd_cipher_dir;
key_convert = HW_CIPHER_NO_CONVERT;
mode = qs->qs_cipher_mode;
switch (mode) {
case HW_CIPHER_CBC_MODE:
case HW_CIPHER_XTS_MODE:
algo = qs->qs_cipher_algo;
/*
* AES decrypt key needs to be reversed.
* Instead of reversing the key at session registration,
* it is instead reversed on-the-fly by setting the KEY_CONVERT
* bit here.
*/
if (desc->qcd_cipher_dir == HW_CIPHER_DECRYPT)
key_convert = HW_CIPHER_KEY_CONVERT;
break;
case HW_CIPHER_CTR_MODE:
algo = qs->qs_cipher_algo;
dir = HW_CIPHER_ENCRYPT;
break;
default:
panic("unhandled cipher mode %d", mode);
break;
}
return HW_CIPHER_CONFIG_BUILD(mode, algo, key_convert, dir);
}
uint16_t
qat_crypto_load_auth_session(const struct qat_crypto_desc *desc,
const struct qat_session *qs, const struct qat_sym_hash_def **hash_def)
{
enum qat_sym_hash_algorithm algo;
switch (qs->qs_auth_algo) {
case HW_AUTH_ALGO_SHA1:
algo = QAT_SYM_HASH_SHA1;
break;
case HW_AUTH_ALGO_SHA256:
algo = QAT_SYM_HASH_SHA256;
break;
case HW_AUTH_ALGO_SHA384:
algo = QAT_SYM_HASH_SHA384;
break;
case HW_AUTH_ALGO_SHA512:
algo = QAT_SYM_HASH_SHA512;
break;
case HW_AUTH_ALGO_GALOIS_128:
algo = QAT_SYM_HASH_AES_GCM;
break;
default:
panic("unhandled auth algorithm %d", qs->qs_auth_algo);
break;
}
*hash_def = &qat_sym_hash_defs[algo];
return HW_AUTH_CONFIG_BUILD(qs->qs_auth_mode,
(*hash_def)->qshd_qat->qshqi_algo_enc,
(*hash_def)->qshd_alg->qshai_digest_len);
}
static bool
qat_is_hash(int alg)
{
switch (alg) {
case CRYPTO_SHA1:
case CRYPTO_SHA1_HMAC:
case CRYPTO_SHA2_256:
case CRYPTO_SHA2_256_HMAC:
case CRYPTO_SHA2_384:
case CRYPTO_SHA2_384_HMAC:
case CRYPTO_SHA2_512:
case CRYPTO_SHA2_512_HMAC:
case CRYPTO_AES_128_NIST_GMAC:
case CRYPTO_AES_192_NIST_GMAC:
case CRYPTO_AES_256_NIST_GMAC:
return true;
default:
return false;
}
}
struct qat_crypto_load_cb_arg {
struct qat_session *qs;
struct qat_sym_cookie *qsc;
struct cryptop *crp;
struct cryptodesc *enc;
struct cryptodesc *mac;
int error;
};
static void
qat_crypto_load_cb(void *_arg, bus_dma_segment_t *segs, int nseg,
int error)
{
struct cryptop *crp;
struct cryptodesc *enc, *mac;
struct flat_buffer_desc *flatbuf;
struct qat_crypto_load_cb_arg *arg;
struct qat_session *qs;
struct qat_sym_cookie *qsc;
bus_addr_t addr;
bus_size_t len;
int iseg, oseg, skip;
arg = _arg;
if (error != 0) {
arg->error = error;
return;
}
crp = arg->crp;
enc = arg->enc;
mac = arg->mac;
qs = arg->qs;
qsc = arg->qsc;
if (qs->qs_auth_algo == HW_AUTH_ALGO_GALOIS_128) {
/*
* The firmware expects AAD to be in a contiguous buffer and
* padded to a multiple of 16 bytes. To satisfy these
* constraints we bounce the AAD into a per-request buffer.
*/
crypto_copydata(crp->crp_flags, crp->crp_buf, mac->crd_skip,
mac->crd_len, qsc->qsc_gcm_aad);
memset(qsc->qsc_gcm_aad + mac->crd_len, 0,
roundup2(mac->crd_len, QAT_AES_GCM_AAD_ALIGN) -
mac->crd_len);
skip = enc->crd_skip;
} else if (mac != NULL) {
skip = mac->crd_skip;
} else {
skip = enc->crd_skip;
}
for (iseg = oseg = 0; iseg < nseg; iseg++) {
addr = segs[iseg].ds_addr;
len = segs[iseg].ds_len;
if (skip > 0) {
if (skip < len) {
addr += skip;
len -= skip;
skip = 0;
} else {
skip -= len;
continue;
}
}
flatbuf = &qsc->qsc_flat_bufs[oseg++];
flatbuf->data_len_in_bytes = (uint32_t)len;
flatbuf->phy_buffer = (uint64_t)addr;
}
qsc->qsc_buf_list.num_buffers = oseg;
}
static void
qat_crypto_load_cb2(void *arg, bus_dma_segment_t *segs, int nseg,
bus_size_t mapsize __unused, int error)
{
qat_crypto_load_cb(arg, segs, nseg, error);
}
static int
qat_crypto_load(struct qat_session *qs, struct qat_sym_cookie *qsc,
struct cryptop *crp, struct cryptodesc *enc, struct cryptodesc *mac)
{
struct qat_crypto_load_cb_arg arg;
int error;
if (enc != NULL && (enc->crd_flags & CRD_F_ENCRYPT) != 0) {
if ((enc->crd_flags & CRD_F_IV_EXPLICIT) != 0)
memcpy(qsc->qsc_iv_buf, enc->crd_iv, qs->qs_ivlen);
else
arc4rand(qsc->qsc_iv_buf, qs->qs_ivlen, 0);
if ((enc->crd_flags & CRD_F_IV_PRESENT) == 0) {
crypto_copyback(crp->crp_flags, crp->crp_buf,
enc->crd_inject, qs->qs_ivlen, qsc->qsc_iv_buf);
}
} else if (enc != NULL) {
if ((enc->crd_flags & CRD_F_IV_EXPLICIT) != 0) {
memcpy(qsc->qsc_iv_buf, enc->crd_iv, qs->qs_ivlen);
} else {
crypto_copydata(crp->crp_flags, crp->crp_buf,
enc->crd_inject, qs->qs_ivlen, qsc->qsc_iv_buf);
}
}
arg.crp = crp;
arg.enc = enc;
arg.mac = mac;
arg.qs = qs;
arg.qsc = qsc;
arg.error = 0;
if ((crp->crp_flags & CRYPTO_F_IOV) != 0) {
error = bus_dmamap_load_uio(qsc->qsc_buf_dma_tag,
qsc->qsc_buf_dmamap, crp->crp_uio,
qat_crypto_load_cb2, &arg, BUS_DMA_NOWAIT);
} else if ((crp->crp_flags & CRYPTO_F_IMBUF) != 0) {
error = bus_dmamap_load_mbuf(qsc->qsc_buf_dma_tag,
qsc->qsc_buf_dmamap, crp->crp_mbuf,
qat_crypto_load_cb2, &arg, BUS_DMA_NOWAIT);
} else {
error = bus_dmamap_load(qsc->qsc_buf_dma_tag,
qsc->qsc_buf_dmamap, crp->crp_buf, crp->crp_ilen,
qat_crypto_load_cb, &arg, BUS_DMA_NOWAIT);
}
if (error == 0)
error = arg.error;
return error;
}
static inline struct qat_crypto_bank *
qat_crypto_select_bank(struct qat_crypto *qcy)
{
u_int cpuid = PCPU_GET(cpuid);
return &qcy->qcy_banks[cpuid % qcy->qcy_num_banks];
}
static int
qat_crypto_setup_ring(struct qat_softc *sc, struct qat_crypto_bank *qcb)
{
int error, i, bank;
int curname = 0;
char *name;
bank = qcb->qcb_bank;
name = qcb->qcb_ring_names[curname++];
snprintf(name, QAT_RING_NAME_SIZE, "bank%d sym_tx", bank);
error = qat_etr_setup_ring(sc, qcb->qcb_bank,
sc->sc_hw.qhw_ring_sym_tx, QAT_NSYMREQ, sc->sc_hw.qhw_fw_req_size,
NULL, NULL, name, &qcb->qcb_sym_tx);
if (error)
return error;
name = qcb->qcb_ring_names[curname++];
snprintf(name, QAT_RING_NAME_SIZE, "bank%d sym_rx", bank);
error = qat_etr_setup_ring(sc, qcb->qcb_bank,
sc->sc_hw.qhw_ring_sym_rx, QAT_NSYMREQ, sc->sc_hw.qhw_fw_resp_size,
qat_crypto_sym_rxintr, qcb, name, &qcb->qcb_sym_rx);
if (error)
return error;
for (i = 0; i < QAT_NSYMCOOKIE; i++) {
struct qat_dmamem *qdm = &qcb->qcb_symck_dmamems[i];
struct qat_sym_cookie *qsc;
error = qat_alloc_dmamem(sc, qdm, 1,
sizeof(struct qat_sym_cookie), QAT_OPTIMAL_ALIGN);
if (error)
return error;
qsc = qdm->qdm_dma_vaddr;
qsc->qsc_self_dmamap = qdm->qdm_dma_map;
qsc->qsc_self_dma_tag = qdm->qdm_dma_tag;
qsc->qsc_bulk_req_params_buf_paddr =
qdm->qdm_dma_seg.ds_addr + offsetof(struct qat_sym_cookie,
u.qsc_bulk_cookie.qsbc_req_params_buf);
qsc->qsc_buffer_list_desc_paddr =
qdm->qdm_dma_seg.ds_addr + offsetof(struct qat_sym_cookie,
qsc_buf_list);
qsc->qsc_iv_buf_paddr =
qdm->qdm_dma_seg.ds_addr + offsetof(struct qat_sym_cookie,
qsc_iv_buf);
qsc->qsc_auth_res_paddr =
qdm->qdm_dma_seg.ds_addr + offsetof(struct qat_sym_cookie,
qsc_auth_res);
qsc->qsc_gcm_aad_paddr =
qdm->qdm_dma_seg.ds_addr + offsetof(struct qat_sym_cookie,
qsc_gcm_aad);
qsc->qsc_content_desc_paddr =
qdm->qdm_dma_seg.ds_addr + offsetof(struct qat_sym_cookie,
qsc_content_desc);
qcb->qcb_symck_free[i] = qsc;
qcb->qcb_symck_free_count++;
error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev),
1, 0, /* alignment, boundary */
BUS_SPACE_MAXADDR, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
QAT_MAXLEN, /* maxsize */
QAT_MAXSEG, /* nsegments */
QAT_MAXLEN, /* maxsegsize */
BUS_DMA_COHERENT, /* flags */
NULL, NULL, /* lockfunc, lockarg */
&qsc->qsc_buf_dma_tag);
if (error != 0)
return error;
error = bus_dmamap_create(qsc->qsc_buf_dma_tag,
BUS_DMA_COHERENT, &qsc->qsc_buf_dmamap);
if (error)
return error;
}
return 0;
}
static int
qat_crypto_bank_init(struct qat_softc *sc, struct qat_crypto_bank *qcb)
{
mtx_init(&qcb->qcb_bank_mtx, "qcb bank", NULL, MTX_DEF);
return qat_crypto_setup_ring(sc, qcb);
}
static void
qat_crypto_bank_deinit(struct qat_softc *sc, struct qat_crypto_bank *qcb)
{
struct qat_dmamem *qdm;
int i;
for (i = 0; i < QAT_NSYMCOOKIE; i++) {
qdm = &qcb->qcb_symck_dmamems[i];
qat_free_dmamem(sc, qdm);
}
qat_free_dmamem(sc, &qcb->qcb_sym_tx->qr_dma);
qat_free_dmamem(sc, &qcb->qcb_sym_rx->qr_dma);
mtx_destroy(&qcb->qcb_bank_mtx);
}
static int
qat_crypto_init(struct qat_softc *sc)
{
struct qat_crypto *qcy = &sc->sc_crypto;
struct sysctl_ctx_list *ctx;
struct sysctl_oid *oid;
struct sysctl_oid_list *children;
int bank, error, num_banks;
qcy->qcy_sc = sc;
if (sc->sc_hw.qhw_init_arb != NULL)
num_banks = imin(mp_ncpus, sc->sc_hw.qhw_num_banks);
else
num_banks = sc->sc_ae_num;
qcy->qcy_num_banks = num_banks;
qcy->qcy_banks =
qat_alloc_mem(sizeof(struct qat_crypto_bank) * num_banks);
for (bank = 0; bank < num_banks; bank++) {
struct qat_crypto_bank *qcb = &qcy->qcy_banks[bank];
qcb->qcb_bank = bank;
error = qat_crypto_bank_init(sc, qcb);
if (error)
return error;
}
mtx_init(&qcy->qcy_crypto_mtx, "qcy crypto", NULL, MTX_DEF);
ctx = device_get_sysctl_ctx(sc->sc_dev);
oid = device_get_sysctl_tree(sc->sc_dev);
children = SYSCTL_CHILDREN(oid);
oid = SYSCTL_ADD_NODE(ctx, children, OID_AUTO, "stats",
CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "statistics");
children = SYSCTL_CHILDREN(oid);
sc->sc_gcm_aad_restarts = counter_u64_alloc(M_WAITOK);
SYSCTL_ADD_COUNTER_U64(ctx, children, OID_AUTO, "gcm_aad_restarts",
CTLFLAG_RD, &sc->sc_gcm_aad_restarts,
"GCM requests deferred due to AAD size change");
sc->sc_gcm_aad_updates = counter_u64_alloc(M_WAITOK);
SYSCTL_ADD_COUNTER_U64(ctx, children, OID_AUTO, "gcm_aad_updates",
CTLFLAG_RD, &sc->sc_gcm_aad_updates,
"GCM requests that required session state update");
sc->sc_ring_full_restarts = counter_u64_alloc(M_WAITOK);
SYSCTL_ADD_COUNTER_U64(ctx, children, OID_AUTO, "ring_full",
CTLFLAG_RD, &sc->sc_ring_full_restarts,
"Requests deferred due to in-flight max reached");
sc->sc_sym_alloc_failures = counter_u64_alloc(M_WAITOK);
SYSCTL_ADD_COUNTER_U64(ctx, children, OID_AUTO, "sym_alloc_failures",
CTLFLAG_RD, &sc->sc_sym_alloc_failures,
"Request allocation failures");
return 0;
}
static void
qat_crypto_deinit(struct qat_softc *sc)
{
struct qat_crypto *qcy = &sc->sc_crypto;
struct qat_crypto_bank *qcb;
int bank;
counter_u64_free(sc->sc_sym_alloc_failures);
counter_u64_free(sc->sc_ring_full_restarts);
counter_u64_free(sc->sc_gcm_aad_updates);
counter_u64_free(sc->sc_gcm_aad_restarts);
if (qcy->qcy_banks != NULL) {
for (bank = 0; bank < qcy->qcy_num_banks; bank++) {
qcb = &qcy->qcy_banks[bank];
qat_crypto_bank_deinit(sc, qcb);
}
qat_free_mem(qcy->qcy_banks);
mtx_destroy(&qcy->qcy_crypto_mtx);
}
}
static void
qat_crypto_register(struct qat_softc *sc, int alg)
{
(void)crypto_register(sc->sc_crypto.qcy_cid, alg, QAT_MAXLEN, 0);
}
static int
qat_crypto_start(struct qat_softc *sc)
{
struct qat_crypto *qcy;
qcy = &sc->sc_crypto;
qcy->qcy_cid = crypto_get_driverid(sc->sc_dev,
sizeof(struct qat_session), CRYPTOCAP_F_HARDWARE);
if (qcy->qcy_cid < 0) {
device_printf(sc->sc_dev,
"could not get opencrypto driver id\n");
return ENOENT;
}
qat_crypto_register(sc, CRYPTO_AES_CBC);
qat_crypto_register(sc, CRYPTO_AES_ICM);
qat_crypto_register(sc, CRYPTO_AES_XTS);
qat_crypto_register(sc, CRYPTO_AES_NIST_GCM_16);
qat_crypto_register(sc, CRYPTO_AES_128_NIST_GMAC);
qat_crypto_register(sc, CRYPTO_AES_192_NIST_GMAC);
qat_crypto_register(sc, CRYPTO_AES_256_NIST_GMAC);
qat_crypto_register(sc, CRYPTO_SHA1);
qat_crypto_register(sc, CRYPTO_SHA1_HMAC);
qat_crypto_register(sc, CRYPTO_SHA2_256);
qat_crypto_register(sc, CRYPTO_SHA2_256_HMAC);
qat_crypto_register(sc, CRYPTO_SHA2_384);
qat_crypto_register(sc, CRYPTO_SHA2_384_HMAC);
qat_crypto_register(sc, CRYPTO_SHA2_512);
qat_crypto_register(sc, CRYPTO_SHA2_512_HMAC);
return 0;
}
static void
qat_crypto_stop(struct qat_softc *sc)
{
struct qat_crypto *qcy;
qcy = &sc->sc_crypto;
if (qcy->qcy_cid >= 0)
(void)crypto_unregister_all(qcy->qcy_cid);
}
static int
qat_crypto_sym_rxintr(struct qat_softc *sc, void *arg, void *msg)
{
char icv[QAT_SYM_HASH_BUFFER_LEN];
struct qat_crypto_bank *qcb = arg;
struct qat_crypto *qcy;
struct qat_session *qs;
struct qat_sym_cookie *qsc;
struct qat_sym_bulk_cookie *qsbc;
struct cryptop *crp;
int error;
uint16_t auth_sz;
bool blocked;
qsc = *(void **)((uintptr_t)msg + sc->sc_hw.qhw_crypto_opaque_offset);
qsbc = &qsc->u.qsc_bulk_cookie;
qcy = qsbc->qsbc_crypto;
qs = qsbc->qsbc_session;
crp = qsbc->qsbc_cb_tag;
bus_dmamap_sync(qsc->qsc_self_dma_tag, qsc->qsc_self_dmamap,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
bus_dmamap_sync(qsc->qsc_buf_dma_tag, qsc->qsc_buf_dmamap,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(qsc->qsc_buf_dma_tag, qsc->qsc_buf_dmamap);
error = 0;
if ((auth_sz = qs->qs_auth_mlen) != 0) {
if (qs->qs_auth_algo == HW_AUTH_ALGO_GALOIS_128 &&
(qsc->qsc_enc->crd_flags & CRD_F_ENCRYPT) == 0) {
crypto_copydata(crp->crp_flags, crp->crp_buf,
qsc->qsc_mac->crd_inject, auth_sz,
icv);
if (timingsafe_bcmp(icv, qsc->qsc_auth_res,
auth_sz) != 0) {
error = EBADMSG;
}
} else {
crypto_copyback(crp->crp_flags, crp->crp_buf,
qsc->qsc_mac->crd_inject, auth_sz,
qsc->qsc_auth_res);
}
}
qat_crypto_free_sym_cookie(qcb, qsc);
blocked = false;
mtx_lock(&qs->qs_session_mtx);
MPASS(qs->qs_status & QAT_SESSION_STATUS_ACTIVE);
qs->qs_inflight--;
if (__predict_false(qs->qs_need_wakeup && qs->qs_inflight == 0)) {
blocked = true;
qs->qs_need_wakeup = false;
}
mtx_unlock(&qs->qs_session_mtx);
crp->crp_etype = error;
crypto_done(crp);
if (blocked)
crypto_unblock(qcy->qcy_cid, CRYPTO_SYMQ);
return 1;
}
static int
qat_probesession(device_t dev, struct cryptoini *enc, struct cryptoini *mac)
{
if (enc != NULL && enc->cri_alg == CRYPTO_AES_XTS &&
qat_lookup(dev)->qatp_chip == QAT_CHIP_C2XXX) {
/*
* AES-XTS is not supported by the NanoQAT.
*/
return EINVAL;
}
if (enc != NULL) {
switch (enc->cri_alg) {
case CRYPTO_AES_NIST_GCM_16:
if (mac == NULL ||
(mac->cri_alg != CRYPTO_AES_128_NIST_GMAC &&
mac->cri_alg != CRYPTO_AES_192_NIST_GMAC &&
mac->cri_alg != CRYPTO_AES_256_NIST_GMAC))
return EINVAL;
break;
case CRYPTO_AES_CBC:
case CRYPTO_AES_ICM:
case CRYPTO_AES_XTS:
if (mac != NULL &&
mac->cri_alg != CRYPTO_SHA1_HMAC &&
mac->cri_alg != CRYPTO_SHA2_256_HMAC &&
mac->cri_alg != CRYPTO_SHA2_384_HMAC &&
mac->cri_alg != CRYPTO_SHA2_512_HMAC)
return EINVAL;
break;
default:
return EINVAL;
}
} else {
switch (mac->cri_alg) {
case CRYPTO_SHA1:
case CRYPTO_SHA1_HMAC:
case CRYPTO_SHA2_256:
case CRYPTO_SHA2_256_HMAC:
case CRYPTO_SHA2_384:
case CRYPTO_SHA2_384_HMAC:
case CRYPTO_SHA2_512:
case CRYPTO_SHA2_512_HMAC:
break;
default:
return EINVAL;
}
}
return 0;
}
static int
qat_newsession(device_t dev, crypto_session_t cses, struct cryptoini *cri)
{
struct cryptoini *enc, *mac;
struct qat_crypto *qcy;
struct qat_dmamem *qdm;
struct qat_session *qs;
struct qat_softc *sc;
struct qat_crypto_desc *ddesc, *edesc;
int error, slices;
sc = device_get_softc(dev);
qs = crypto_get_driver_session(cses);
qcy = &sc->sc_crypto;
enc = mac = NULL;
if (qat_is_hash(cri->cri_alg))
mac = cri;
else
enc = cri;
cri = cri->cri_next;
if (cri != NULL) {
if (enc == NULL && !qat_is_hash(cri->cri_alg))
enc = cri;
if (mac == NULL && qat_is_hash(cri->cri_alg))
mac = cri;
if (cri->cri_next != NULL || !(enc != NULL && mac != NULL))
return EINVAL;
}
error = qat_probesession(dev, enc, mac);
if (error != 0)
return error;
qdm = &qs->qs_desc_mem;
error = qat_alloc_dmamem(sc, qdm, QAT_MAXSEG,
sizeof(struct qat_crypto_desc) * 2, QAT_OPTIMAL_ALIGN);
if (error != 0)
return error;
mtx_init(&qs->qs_session_mtx, "qs session", NULL, MTX_DEF);
qs->qs_aad_length = -1;
qs->qs_dec_desc = ddesc = qdm->qdm_dma_vaddr;
qs->qs_enc_desc = edesc = ddesc + 1;
ddesc->qcd_desc_paddr = qdm->qdm_dma_seg.ds_addr;
ddesc->qcd_hash_state_paddr = ddesc->qcd_desc_paddr +
offsetof(struct qat_crypto_desc, qcd_hash_state_prefix_buf);
edesc->qcd_desc_paddr = qdm->qdm_dma_seg.ds_addr +
sizeof(struct qat_crypto_desc);
edesc->qcd_hash_state_paddr = edesc->qcd_desc_paddr +
offsetof(struct qat_crypto_desc, qcd_hash_state_prefix_buf);
qs->qs_status = QAT_SESSION_STATUS_ACTIVE;
qs->qs_inflight = 0;
if (enc != NULL) {
qs->qs_cipher_key = enc->cri_key;
qs->qs_cipher_klen = enc->cri_klen / 8;
}
if (mac != NULL) {
qs->qs_auth_key = mac->cri_key;
qs->qs_auth_klen = mac->cri_klen / 8;
}
if (enc != NULL) {
switch (enc->cri_alg) {
case CRYPTO_AES_CBC:
qs->qs_cipher_algo = qat_aes_cipher_algo(enc->cri_klen);
qs->qs_cipher_mode = HW_CIPHER_CBC_MODE;
qs->qs_ivlen = AES_BLOCK_LEN;
break;
case CRYPTO_AES_ICM:
qs->qs_cipher_algo = qat_aes_cipher_algo(enc->cri_klen);
qs->qs_cipher_mode = HW_CIPHER_CTR_MODE;
qs->qs_ivlen = AES_BLOCK_LEN;
break;
case CRYPTO_AES_XTS:
qs->qs_cipher_algo =
qat_aes_cipher_algo(enc->cri_klen / 2);
qs->qs_cipher_mode = HW_CIPHER_XTS_MODE;
qs->qs_ivlen = AES_XTS_IV_LEN;
break;
case CRYPTO_AES_NIST_GCM_16:
qs->qs_cipher_algo = qat_aes_cipher_algo(enc->cri_klen);
qs->qs_cipher_mode = HW_CIPHER_CTR_MODE;
qs->qs_auth_algo = HW_AUTH_ALGO_GALOIS_128;
qs->qs_auth_mode = HW_AUTH_MODE1;
qs->qs_ivlen = AES_GCM_IV_LEN;
break;
case 0:
break;
default:
panic("%s: unhandled cipher algorithm %d", __func__,
enc->cri_alg);
}
}
if (mac != NULL) {
switch (mac->cri_alg) {
case CRYPTO_SHA1_HMAC:
qs->qs_auth_algo = HW_AUTH_ALGO_SHA1;
qs->qs_auth_mode = HW_AUTH_MODE1;
break;
case CRYPTO_SHA1:
qs->qs_auth_algo = HW_AUTH_ALGO_SHA1;
qs->qs_auth_mode = HW_AUTH_MODE0;
break;
case CRYPTO_SHA2_256_HMAC:
qs->qs_auth_algo = HW_AUTH_ALGO_SHA256;
qs->qs_auth_mode = HW_AUTH_MODE1;
break;
case CRYPTO_SHA2_256:
qs->qs_auth_algo = HW_AUTH_ALGO_SHA256;
qs->qs_auth_mode = HW_AUTH_MODE0;
break;
case CRYPTO_SHA2_384_HMAC:
qs->qs_auth_algo = HW_AUTH_ALGO_SHA384;
qs->qs_auth_mode = HW_AUTH_MODE1;
break;
case CRYPTO_SHA2_384:
qs->qs_auth_algo = HW_AUTH_ALGO_SHA384;
qs->qs_auth_mode = HW_AUTH_MODE0;
break;
case CRYPTO_SHA2_512_HMAC:
qs->qs_auth_algo = HW_AUTH_ALGO_SHA512;
qs->qs_auth_mode = HW_AUTH_MODE1;
break;
case CRYPTO_SHA2_512:
qs->qs_auth_algo = HW_AUTH_ALGO_SHA512;
qs->qs_auth_mode = HW_AUTH_MODE0;
break;
case CRYPTO_AES_128_NIST_GMAC:
case CRYPTO_AES_192_NIST_GMAC:
case CRYPTO_AES_256_NIST_GMAC:
qs->qs_cipher_algo = qat_aes_cipher_algo(mac->cri_klen);
qs->qs_cipher_mode = HW_CIPHER_CTR_MODE;
qs->qs_auth_algo = HW_AUTH_ALGO_GALOIS_128;
qs->qs_auth_mode = HW_AUTH_MODE1;
qs->qs_cipher_key = qs->qs_auth_key;
qs->qs_cipher_klen = qs->qs_auth_klen;
break;
case 0:
break;
default:
panic("%s: unhandled auth algorithm %d", __func__,
mac->cri_alg);
}
}
slices = 0;
if (enc != NULL && mac != NULL) {
/* auth then decrypt */
ddesc->qcd_slices[0] = FW_SLICE_AUTH;
ddesc->qcd_slices[1] = FW_SLICE_CIPHER;
ddesc->qcd_cipher_dir = HW_CIPHER_DECRYPT;
ddesc->qcd_cmd_id = FW_LA_CMD_HASH_CIPHER;
/* encrypt then auth */
edesc->qcd_slices[0] = FW_SLICE_CIPHER;
edesc->qcd_slices[1] = FW_SLICE_AUTH;
edesc->qcd_cipher_dir = HW_CIPHER_ENCRYPT;
edesc->qcd_cmd_id = FW_LA_CMD_CIPHER_HASH;
slices = 2;
} else if (enc != NULL) {
/* decrypt */
ddesc->qcd_slices[0] = FW_SLICE_CIPHER;
ddesc->qcd_cipher_dir = HW_CIPHER_DECRYPT;
ddesc->qcd_cmd_id = FW_LA_CMD_CIPHER;
/* encrypt */
edesc->qcd_slices[0] = FW_SLICE_CIPHER;
edesc->qcd_cipher_dir = HW_CIPHER_ENCRYPT;
edesc->qcd_cmd_id = FW_LA_CMD_CIPHER;
slices = 1;
} else if (mac != NULL) {
if (qs->qs_auth_algo == HW_AUTH_ALGO_GALOIS_128) {
/* auth then decrypt */
ddesc->qcd_slices[0] = FW_SLICE_AUTH;
ddesc->qcd_slices[1] = FW_SLICE_CIPHER;
ddesc->qcd_cipher_dir = HW_CIPHER_DECRYPT;
ddesc->qcd_cmd_id = FW_LA_CMD_HASH_CIPHER;
/* encrypt then auth */
edesc->qcd_slices[0] = FW_SLICE_CIPHER;
edesc->qcd_slices[1] = FW_SLICE_AUTH;
edesc->qcd_cipher_dir = HW_CIPHER_ENCRYPT;
edesc->qcd_cmd_id = FW_LA_CMD_CIPHER_HASH;
slices = 2;
} else {
ddesc->qcd_slices[0] = FW_SLICE_AUTH;
ddesc->qcd_cmd_id = FW_LA_CMD_AUTH;
edesc->qcd_slices[0] = FW_SLICE_AUTH;
edesc->qcd_cmd_id = FW_LA_CMD_AUTH;
slices = 1;
}
}
ddesc->qcd_slices[slices] = FW_SLICE_DRAM_WR;
edesc->qcd_slices[slices] = FW_SLICE_DRAM_WR;
qcy->qcy_sc->sc_hw.qhw_crypto_setup_desc(qcy, qs, ddesc);
qcy->qcy_sc->sc_hw.qhw_crypto_setup_desc(qcy, qs, edesc);
if (mac != NULL && mac->cri_mlen != 0)
qs->qs_auth_mlen = mac->cri_mlen;
else
qs->qs_auth_mlen = edesc->qcd_auth_sz;
/* Compute the GMAC by specifying a null cipher payload. */
if (mac != NULL && mac->cri_alg == CRYPTO_AES_NIST_GMAC)
ddesc->qcd_cmd_id = edesc->qcd_cmd_id = FW_LA_CMD_AUTH;
return 0;
}
static void
qat_crypto_clear_desc(struct qat_crypto_desc *desc)
{
explicit_bzero(desc->qcd_content_desc, sizeof(desc->qcd_content_desc));
explicit_bzero(desc->qcd_hash_state_prefix_buf,
sizeof(desc->qcd_hash_state_prefix_buf));
explicit_bzero(desc->qcd_req_cache, sizeof(desc->qcd_req_cache));
}
static void
qat_freesession(device_t dev, crypto_session_t cses)
{
struct qat_session *qs;
qs = crypto_get_driver_session(cses);
KASSERT(qs->qs_inflight == 0,
("%s: session %p has requests in flight", __func__, qs));
qat_crypto_clear_desc(qs->qs_enc_desc);
qat_crypto_clear_desc(qs->qs_dec_desc);
qat_free_dmamem(device_get_softc(dev), &qs->qs_desc_mem);
mtx_destroy(&qs->qs_session_mtx);
}
static int
qat_process(device_t dev, struct cryptop *crp, int hint)
{
struct cryptodesc *crd, *enc, *mac;
struct qat_crypto *qcy;
struct qat_crypto_bank *qcb;
struct qat_crypto_desc const *desc;
struct qat_session *qs;
struct qat_softc *sc;
struct qat_sym_cookie *qsc;
struct qat_sym_bulk_cookie *qsbc;
int error;
sc = device_get_softc(dev);
qcy = &sc->sc_crypto;
qs = crypto_get_driver_session(crp->crp_session);
qsc = NULL;
if (__predict_false(crp->crp_ilen > QAT_MAXLEN)) {
error = E2BIG;
goto fail1;
}
crd = crp->crp_desc;
enc = mac = NULL;
if (qat_is_hash(crd->crd_alg))
mac = crd;
else
enc = crd;
crd = crd->crd_next;
if (crd != NULL) {
if (enc == NULL && !qat_is_hash(crd->crd_alg))
enc = crd;
if (mac == NULL && qat_is_hash(crd->crd_alg))
mac = crd;
if (crd->crd_next != NULL || !(enc != NULL && mac != NULL))
return EINVAL;
}
mtx_lock(&qs->qs_session_mtx);
if (qs->qs_auth_algo == HW_AUTH_ALGO_GALOIS_128) {
if (mac->crd_len > QAT_GCM_AAD_SIZE_MAX) {
error = E2BIG;
mtx_unlock(&qs->qs_session_mtx);
goto fail1;
}
/*
* The firmware interface for GCM annoyingly requires the AAD
* size to be stored in the session's content descriptor, which
* is not really meant to be updated after session
* initialization. For IPSec the AAD size is fixed so this is
* not much of a problem in practice, but we have to catch AAD
* size updates here so that the device code can safely update
* the session's recorded AAD size.
*/
if (__predict_false(mac->crd_len != qs->qs_aad_length)) {
if (qs->qs_inflight == 0) {
if (qs->qs_aad_length != -1) {
counter_u64_add(sc->sc_gcm_aad_updates,
1);
}
qs->qs_aad_length = mac->crd_len;
} else {
qs->qs_need_wakeup = true;
mtx_unlock(&qs->qs_session_mtx);
counter_u64_add(sc->sc_gcm_aad_restarts, 1);
error = ERESTART;
goto fail1;
}
}
}
qs->qs_inflight++;
mtx_unlock(&qs->qs_session_mtx);
qcb = qat_crypto_select_bank(qcy);
qsc = qat_crypto_alloc_sym_cookie(qcb);
if (qsc == NULL) {
counter_u64_add(sc->sc_sym_alloc_failures, 1);
error = ENOBUFS;
goto fail2;
}
if (enc != NULL && (enc->crd_flags & CRD_F_ENCRYPT) != 0)
desc = qs->qs_enc_desc;
else
desc = qs->qs_dec_desc;
qsc->qsc_enc = enc;
qsc->qsc_mac = mac;
error = qat_crypto_load(qs, qsc, crp, enc, mac);
if (error != 0)
goto fail2;
qsbc = &qsc->u.qsc_bulk_cookie;
qsbc->qsbc_crypto = qcy;
qsbc->qsbc_session = qs;
qsbc->qsbc_cb_tag = crp;
sc->sc_hw.qhw_crypto_setup_req_params(qcb, qs, desc, qsc, enc, mac);
bus_dmamap_sync(qsc->qsc_buf_dma_tag, qsc->qsc_buf_dmamap,
BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
bus_dmamap_sync(qsc->qsc_self_dma_tag, qsc->qsc_self_dmamap,
BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
error = qat_etr_put_msg(sc, qcb->qcb_sym_tx,
(uint32_t *)qsbc->qsbc_msg);
if (error)
goto fail2;
return 0;
fail2:
if (qsc)
qat_crypto_free_sym_cookie(qcb, qsc);
mtx_lock(&qs->qs_session_mtx);
qs->qs_inflight--;
mtx_unlock(&qs->qs_session_mtx);
fail1:
crp->crp_etype = error;
crypto_done(crp);
return 0;
}
static device_method_t qat_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, qat_probe),
DEVMETHOD(device_attach, qat_attach),
DEVMETHOD(device_detach, qat_detach),
/* Cryptodev interface */
DEVMETHOD(cryptodev_newsession, qat_newsession),
DEVMETHOD(cryptodev_freesession, qat_freesession),
DEVMETHOD(cryptodev_process, qat_process),
DEVMETHOD_END
};
static devclass_t qat_devclass;
static driver_t qat_driver = {
.name = "qat",
.methods = qat_methods,
.size = sizeof(struct qat_softc),
};
DRIVER_MODULE(qat, pci, qat_driver, qat_devclass, 0, 0);
MODULE_VERSION(qat, 1);
MODULE_DEPEND(qat, crypto, 1, 1, 1);
MODULE_DEPEND(qat, pci, 1, 1, 1);
