From patchwork Wed Mar 6 13:58:52 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xin Zeng X-Patchwork-Id: 13584137 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.13]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D425D13342C; Wed, 6 Mar 2024 14:07:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.13 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709734081; cv=none; b=Ozg4cNm23J7TyzIsQaUkFSDSgVGsDo34i+TA8dZbuvoq83NDntgBe7JzfjnkXG80/L9odcXoILE1P5UNu83I05WQqyC16lERak63fkVLVaZS84Jqo4TB0njlrm1fXtR7VSUuR5HBeMNFYQ3QqP6LVJS4FlykbTO7PqJY47S29Lk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709734081; c=relaxed/simple; bh=WDMCwC4nYpQ1s8uGzZz7tSa0DBf+m+R7oPqe9YH9Boo=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=E3n1O+nP/YZBnqa01mzznQ7ifrbNt6z6nf1Nyepmn6d1PCZQ5+kUD19TUB7mkI8mDIlpT/WFGNhLQD3MyWBz3RxDMgXVAd4sINKt40932l5+eVuHUzrVITUyOW+ZueiWM447DuUS6l+Z/ylk3EZvQjIJMk88Ol8jv08Y4EzFlpM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=bYEWy7m4; arc=none smtp.client-ip=198.175.65.13 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="bYEWy7m4" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1709734080; x=1741270080; h=from:to:cc:subject:date:message-id:in-reply-to: references; bh=WDMCwC4nYpQ1s8uGzZz7tSa0DBf+m+R7oPqe9YH9Boo=; b=bYEWy7m4fGD9VzlTCph1MSVcPd+NpO2l0nYk11849GUMNgeI5rMil8+D WQqmKs8Oi4Mo9yJ4R/2/AVMQf/LDCeoGMuVbXGPqoP0z0LwAjSWnF6vTh xBqKKU3ZH9Nyjwyt7R8L+p88ruL2UsgfQ0PHBrE83UcI3MNRjbCcIsykv ptV1Y/xMGKDQ+70P+pQwC6toXYVE3i1uydFkVpDSGQUXHKtq99fQ/CFzu qKmtqwYoPUAXi7EHFfYqFHkccEUq1n7+APZEu1TJJRAroXRCHy6a54xUc y8jxLG6HLdLqM4A0ajGzpAZI3Q2LURMPkOuIQAbHDK0y51460kjindzkE w==; X-IronPort-AV: E=McAfee;i="6600,9927,11004"; a="15490416" X-IronPort-AV: E=Sophos;i="6.06,208,1705392000"; d="scan'208";a="15490416" Received: from orviesa007.jf.intel.com ([10.64.159.147]) by orvoesa105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Mar 2024 06:08:00 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.06,208,1705392000"; d="scan'208";a="10192180" Received: from qat-server-archercity1.sh.intel.com ([10.67.111.115]) by orviesa007.jf.intel.com with ESMTP; 06 Mar 2024 06:07:56 -0800 From: Xin Zeng To: herbert@gondor.apana.org.au, alex.williamson@redhat.com, jgg@nvidia.com, yishaih@nvidia.com, shameerali.kolothum.thodi@huawei.com, kevin.tian@intel.com Cc: linux-crypto@vger.kernel.org, kvm@vger.kernel.org, qat-linux@intel.com, Siming Wan , Xin Zeng Subject: [PATCH v5 07/10] crypto: qat - add bank save and restore flows Date: Wed, 6 Mar 2024 21:58:52 +0800 Message-Id: <20240306135855.4123535-8-xin.zeng@intel.com> X-Mailer: git-send-email 2.18.2 In-Reply-To: <20240306135855.4123535-1-xin.zeng@intel.com> References: <20240306135855.4123535-1-xin.zeng@intel.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: From: Siming Wan Add logic to save, restore, quiesce and drain a ring bank for QAT GEN4 devices. This allows to save and restore the state of a Virtual Function (VF) and will be used to implement VM live migration. Signed-off-by: Siming Wan Reviewed-by: Giovanni Cabiddu Signed-off-by: Xin Zeng --- .../intel/qat/qat_4xxx/adf_4xxx_hw_data.c | 2 + .../intel/qat/qat_common/adf_accel_devices.h | 38 +++ .../intel/qat/qat_common/adf_gen4_hw_data.c | 279 ++++++++++++++++++ .../intel/qat/qat_common/adf_gen4_hw_data.h | 19 ++ 4 files changed, 338 insertions(+) diff --git a/drivers/crypto/intel/qat/qat_4xxx/adf_4xxx_hw_data.c b/drivers/crypto/intel/qat/qat_4xxx/adf_4xxx_hw_data.c index ef4b0aa36603..eaf055e6f938 100644 --- a/drivers/crypto/intel/qat/qat_4xxx/adf_4xxx_hw_data.c +++ b/drivers/crypto/intel/qat/qat_4xxx/adf_4xxx_hw_data.c @@ -455,6 +455,8 @@ void adf_init_hw_data_4xxx(struct adf_hw_device_data *hw_data, u32 dev_id) hw_data->get_ring_to_svc_map = adf_gen4_get_ring_to_svc_map; hw_data->disable_iov = adf_disable_sriov; hw_data->ring_pair_reset = adf_gen4_ring_pair_reset; + hw_data->bank_state_save = adf_gen4_bank_state_save; + hw_data->bank_state_restore = adf_gen4_bank_state_restore; hw_data->enable_pm = adf_gen4_enable_pm; hw_data->handle_pm_interrupt = adf_gen4_handle_pm_interrupt; hw_data->dev_config = adf_gen4_dev_config; diff --git a/drivers/crypto/intel/qat/qat_common/adf_accel_devices.h b/drivers/crypto/intel/qat/qat_common/adf_accel_devices.h index d1f3f5a822ff..986e63ec702d 100644 --- a/drivers/crypto/intel/qat/qat_common/adf_accel_devices.h +++ b/drivers/crypto/intel/qat/qat_common/adf_accel_devices.h @@ -140,6 +140,40 @@ struct admin_info { u32 mailbox_offset; }; +struct ring_config { + u64 base; + u32 config; + u32 head; + u32 tail; + u32 reserved0; +}; + +struct bank_state { + u32 ringstat0; + u32 ringstat1; + u32 ringuostat; + u32 ringestat; + u32 ringnestat; + u32 ringnfstat; + u32 ringfstat; + u32 ringcstat0; + u32 ringcstat1; + u32 ringcstat2; + u32 ringcstat3; + u32 iaintflagen; + u32 iaintflagreg; + u32 iaintflagsrcsel0; + u32 iaintflagsrcsel1; + u32 iaintcolen; + u32 iaintcolctl; + u32 iaintflagandcolen; + u32 ringexpstat; + u32 ringexpintenable; + u32 ringsrvarben; + u32 reserved0; + struct ring_config rings[ADF_ETR_MAX_RINGS_PER_BANK]; +}; + struct adf_hw_csr_ops { u64 (*build_csr_ring_base_addr)(dma_addr_t addr, u32 size); u32 (*read_csr_ring_head)(void __iomem *csr_base_addr, u32 bank, @@ -271,6 +305,10 @@ struct adf_hw_device_data { void (*enable_ints)(struct adf_accel_dev *accel_dev); void (*set_ssm_wdtimer)(struct adf_accel_dev *accel_dev); int (*ring_pair_reset)(struct adf_accel_dev *accel_dev, u32 bank_nr); + int (*bank_state_save)(struct adf_accel_dev *accel_dev, u32 bank_number, + struct bank_state *state); + int (*bank_state_restore)(struct adf_accel_dev *accel_dev, + u32 bank_number, struct bank_state *state); void (*reset_device)(struct adf_accel_dev *accel_dev); void (*set_msix_rttable)(struct adf_accel_dev *accel_dev); const char *(*uof_get_name)(struct adf_accel_dev *accel_dev, u32 obj_num); diff --git a/drivers/crypto/intel/qat/qat_common/adf_gen4_hw_data.c b/drivers/crypto/intel/qat/qat_common/adf_gen4_hw_data.c index 12269e309fbf..41a0979e68c1 100644 --- a/drivers/crypto/intel/qat/qat_common/adf_gen4_hw_data.c +++ b/drivers/crypto/intel/qat/qat_common/adf_gen4_hw_data.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only) /* Copyright(c) 2020 Intel Corporation */ #include +#include #include "adf_accel_devices.h" #include "adf_cfg_services.h" #include "adf_common_drv.h" @@ -390,3 +391,281 @@ u16 adf_gen4_get_ring_to_svc_map(struct adf_accel_dev *accel_dev) return ring_to_svc_map; } EXPORT_SYMBOL_GPL(adf_gen4_get_ring_to_svc_map); + +/* + * adf_gen4_bank_quiesce_coal_timer() - quiesce bank coalesced interrupt timer + * @accel_dev: Pointer to the device structure + * @bank_idx: Offset to the bank within this device + * @timeout_ms: Timeout in milliseconds for the operation + * + * This function tries to quiesce the coalesced interrupt timer of a bank if + * it has been enabled and triggered. + * + * Returns 0 on success, error code otherwise + * + */ +int adf_gen4_bank_quiesce_coal_timer(struct adf_accel_dev *accel_dev, + u32 bank_idx, int timeout_ms) +{ + struct adf_hw_device_data *hw_data = GET_HW_DATA(accel_dev); + struct adf_hw_csr_ops *csr_ops = GET_CSR_OPS(accel_dev); + void __iomem *csr_misc = adf_get_pmisc_base(accel_dev); + void __iomem *csr_etr = adf_get_etr_base(accel_dev); + u32 int_col_ctl, int_col_mask, int_col_en; + u32 e_stat, intsrc; + u64 wait_us; + int ret; + + if (timeout_ms < 0) + return -EINVAL; + + int_col_ctl = csr_ops->read_csr_int_col_ctl(csr_etr, bank_idx); + int_col_mask = csr_ops->get_int_col_ctl_enable_mask(); + if (!(int_col_ctl & int_col_mask)) + return 0; + + int_col_en = csr_ops->read_csr_int_col_en(csr_etr, bank_idx); + int_col_en &= BIT(ADF_WQM_CSR_RP_IDX_RX); + + e_stat = csr_ops->read_csr_e_stat(csr_etr, bank_idx); + if (!(~e_stat & int_col_en)) + return 0; + + wait_us = 2 * ((int_col_ctl & ~int_col_mask) << 8) * USEC_PER_SEC; + do_div(wait_us, hw_data->clock_frequency); + wait_us = min(wait_us, (u64)timeout_ms * USEC_PER_MSEC); + dev_dbg(&GET_DEV(accel_dev), + "wait for bank %d - coalesced timer expires in %llu us (max=%u ms estat=0x%x intcolen=0x%x)\n", + bank_idx, wait_us, timeout_ms, e_stat, int_col_en); + + ret = read_poll_timeout(ADF_CSR_RD, intsrc, intsrc, + ADF_COALESCED_POLL_DELAY_US, wait_us, true, + csr_misc, ADF_WQM_CSR_RPINTSOU(bank_idx)); + if (ret) + dev_warn(&GET_DEV(accel_dev), + "coalesced timer for bank %d expired (%llu us)\n", + bank_idx, wait_us); + + return ret; +} +EXPORT_SYMBOL_GPL(adf_gen4_bank_quiesce_coal_timer); + +static int drain_bank(void __iomem *csr, u32 bank_number, int timeout_us) +{ + u32 status; + + ADF_CSR_WR(csr, ADF_WQM_CSR_RPRESETCTL(bank_number), + ADF_WQM_CSR_RPRESETCTL_DRAIN); + + return read_poll_timeout(ADF_CSR_RD, status, + status & ADF_WQM_CSR_RPRESETSTS_STATUS, + ADF_RPRESET_POLL_DELAY_US, timeout_us, true, + csr, ADF_WQM_CSR_RPRESETSTS(bank_number)); +} + +void adf_gen4_bank_drain_finish(struct adf_accel_dev *accel_dev, + u32 bank_number) +{ + void __iomem *csr = adf_get_etr_base(accel_dev); + + ADF_CSR_WR(csr, ADF_WQM_CSR_RPRESETSTS(bank_number), + ADF_WQM_CSR_RPRESETSTS_STATUS); +} + +int adf_gen4_bank_drain_start(struct adf_accel_dev *accel_dev, + u32 bank_number, int timeout_us) +{ + void __iomem *csr = adf_get_etr_base(accel_dev); + int ret; + + dev_dbg(&GET_DEV(accel_dev), "Drain bank %d\n", bank_number); + + ret = drain_bank(csr, bank_number, timeout_us); + if (ret) + dev_err(&GET_DEV(accel_dev), "Bank drain failed (timeout)\n"); + else + dev_dbg(&GET_DEV(accel_dev), "Bank drain successful\n"); + + return ret; +} + +static void bank_state_save(struct adf_hw_csr_ops *ops, void __iomem *base, + u32 bank, struct bank_state *state, u32 num_rings) +{ + u32 i; + + state->ringstat0 = ops->read_csr_stat(base, bank); + state->ringuostat = ops->read_csr_uo_stat(base, bank); + state->ringestat = ops->read_csr_e_stat(base, bank); + state->ringnestat = ops->read_csr_ne_stat(base, bank); + state->ringnfstat = ops->read_csr_nf_stat(base, bank); + state->ringfstat = ops->read_csr_f_stat(base, bank); + state->ringcstat0 = ops->read_csr_c_stat(base, bank); + state->iaintflagen = ops->read_csr_int_en(base, bank); + state->iaintflagreg = ops->read_csr_int_flag(base, bank); + state->iaintflagsrcsel0 = ops->read_csr_int_srcsel(base, bank); + state->iaintcolen = ops->read_csr_int_col_en(base, bank); + state->iaintcolctl = ops->read_csr_int_col_ctl(base, bank); + state->iaintflagandcolen = ops->read_csr_int_flag_and_col(base, bank); + state->ringexpstat = ops->read_csr_exp_stat(base, bank); + state->ringexpintenable = ops->read_csr_exp_int_en(base, bank); + state->ringsrvarben = ops->read_csr_ring_srv_arb_en(base, bank); + + for (i = 0; i < num_rings; i++) { + state->rings[i].head = ops->read_csr_ring_head(base, bank, i); + state->rings[i].tail = ops->read_csr_ring_tail(base, bank, i); + state->rings[i].config = ops->read_csr_ring_config(base, bank, i); + state->rings[i].base = ops->read_csr_ring_base(base, bank, i); + } +} + +#define CHECK_STAT(op, expect_val, name, args...) \ +({ \ + u32 __expect_val = (expect_val); \ + u32 actual_val = op(args); \ + (__expect_val == actual_val) ? 0 : \ + (pr_err("QAT: Fail to restore %s register. Expected 0x%x, actual 0x%x\n", \ + name, __expect_val, actual_val), -EINVAL); \ +}) + +static int bank_state_restore(struct adf_hw_csr_ops *ops, void __iomem *base, + u32 bank, struct bank_state *state, u32 num_rings, + int tx_rx_gap) +{ + u32 val, tmp_val, i; + int ret; + + for (i = 0; i < num_rings; i++) + ops->write_csr_ring_base(base, bank, i, state->rings[i].base); + + for (i = 0; i < num_rings; i++) + ops->write_csr_ring_config(base, bank, i, state->rings[i].config); + + for (i = 0; i < num_rings / 2; i++) { + int tx = i * (tx_rx_gap + 1); + int rx = tx + tx_rx_gap; + + ops->write_csr_ring_head(base, bank, tx, state->rings[tx].head); + ops->write_csr_ring_tail(base, bank, tx, state->rings[tx].tail); + + /* + * The TX ring head needs to be updated again to make sure that + * the HW will not consider the ring as full when it is empty + * and the correct state flags are set to match the recovered state. + */ + if (state->ringestat & BIT(tx)) { + val = ops->read_csr_int_srcsel(base, bank); + val |= ADF_RP_INT_SRC_SEL_F_RISE_MASK; + ops->write_csr_int_srcsel_w_val(base, bank, val); + ops->write_csr_ring_head(base, bank, tx, state->rings[tx].head); + } + + ops->write_csr_ring_tail(base, bank, rx, state->rings[rx].tail); + val = ops->read_csr_int_srcsel(base, bank); + val |= ADF_RP_INT_SRC_SEL_F_RISE_MASK << ADF_RP_INT_SRC_SEL_RANGE_WIDTH; + ops->write_csr_int_srcsel_w_val(base, bank, val); + + ops->write_csr_ring_head(base, bank, rx, state->rings[rx].head); + val = ops->read_csr_int_srcsel(base, bank); + val |= ADF_RP_INT_SRC_SEL_F_FALL_MASK << ADF_RP_INT_SRC_SEL_RANGE_WIDTH; + ops->write_csr_int_srcsel_w_val(base, bank, val); + + /* + * The RX ring tail needs to be updated again to make sure that + * the HW will not consider the ring as empty when it is full + * and the correct state flags are set to match the recovered state. + */ + if (state->ringfstat & BIT(rx)) + ops->write_csr_ring_tail(base, bank, rx, state->rings[rx].tail); + } + + ops->write_csr_int_flag_and_col(base, bank, state->iaintflagandcolen); + ops->write_csr_int_en(base, bank, state->iaintflagen); + ops->write_csr_int_col_en(base, bank, state->iaintcolen); + ops->write_csr_int_srcsel_w_val(base, bank, state->iaintflagsrcsel0); + ops->write_csr_exp_int_en(base, bank, state->ringexpintenable); + ops->write_csr_int_col_ctl(base, bank, state->iaintcolctl); + ops->write_csr_ring_srv_arb_en(base, bank, state->ringsrvarben); + + /* Check that all ring statuses match the saved state. */ + ret = CHECK_STAT(ops->read_csr_stat, state->ringstat0, "ringstat", + base, bank); + if (ret) + return ret; + + ret = CHECK_STAT(ops->read_csr_e_stat, state->ringestat, "ringestat", + base, bank); + if (ret) + return ret; + + ret = CHECK_STAT(ops->read_csr_ne_stat, state->ringnestat, "ringnestat", + base, bank); + if (ret) + return ret; + + ret = CHECK_STAT(ops->read_csr_nf_stat, state->ringnfstat, "ringnfstat", + base, bank); + if (ret) + return ret; + + ret = CHECK_STAT(ops->read_csr_f_stat, state->ringfstat, "ringfstat", + base, bank); + if (ret) + return ret; + + ret = CHECK_STAT(ops->read_csr_c_stat, state->ringcstat0, "ringcstat", + base, bank); + if (ret) + return ret; + + tmp_val = ops->read_csr_exp_stat(base, bank); + val = state->ringexpstat; + if (tmp_val && !val) { + pr_err("QAT: Bank was restored with exception: 0x%x\n", val); + return -EINVAL; + } + + return 0; +} + +int adf_gen4_bank_state_save(struct adf_accel_dev *accel_dev, u32 bank_number, + struct bank_state *state) +{ + struct adf_hw_device_data *hw_data = GET_HW_DATA(accel_dev); + struct adf_hw_csr_ops *csr_ops = GET_CSR_OPS(accel_dev); + void __iomem *csr_base = adf_get_etr_base(accel_dev); + + if (bank_number >= hw_data->num_banks || !state) + return -EINVAL; + + dev_dbg(&GET_DEV(accel_dev), "Saving state of bank %d\n", bank_number); + + bank_state_save(csr_ops, csr_base, bank_number, state, + hw_data->num_rings_per_bank); + + return 0; +} +EXPORT_SYMBOL_GPL(adf_gen4_bank_state_save); + +int adf_gen4_bank_state_restore(struct adf_accel_dev *accel_dev, u32 bank_number, + struct bank_state *state) +{ + struct adf_hw_device_data *hw_data = GET_HW_DATA(accel_dev); + struct adf_hw_csr_ops *csr_ops = GET_CSR_OPS(accel_dev); + void __iomem *csr_base = adf_get_etr_base(accel_dev); + int ret; + + if (bank_number >= hw_data->num_banks || !state) + return -EINVAL; + + dev_dbg(&GET_DEV(accel_dev), "Restoring state of bank %d\n", bank_number); + + ret = bank_state_restore(csr_ops, csr_base, bank_number, state, + hw_data->num_rings_per_bank, hw_data->tx_rx_gap); + if (ret) + dev_err(&GET_DEV(accel_dev), + "Unable to restore state of bank %d\n", bank_number); + + return ret; +} +EXPORT_SYMBOL_GPL(adf_gen4_bank_state_restore); diff --git a/drivers/crypto/intel/qat/qat_common/adf_gen4_hw_data.h b/drivers/crypto/intel/qat/qat_common/adf_gen4_hw_data.h index 719f7757e587..e8cb930e80c9 100644 --- a/drivers/crypto/intel/qat/qat_common/adf_gen4_hw_data.h +++ b/drivers/crypto/intel/qat/qat_common/adf_gen4_hw_data.h @@ -77,10 +77,19 @@ #define ADF_RPRESET_POLL_TIMEOUT_US (5 * USEC_PER_SEC) #define ADF_RPRESET_POLL_DELAY_US 20 #define ADF_WQM_CSR_RPRESETCTL_RESET BIT(0) +#define ADF_WQM_CSR_RPRESETCTL_DRAIN BIT(2) #define ADF_WQM_CSR_RPRESETCTL(bank) (0x6000 + ((bank) << 3)) #define ADF_WQM_CSR_RPRESETSTS_STATUS BIT(0) #define ADF_WQM_CSR_RPRESETSTS(bank) (ADF_WQM_CSR_RPRESETCTL(bank) + 4) +/* Ring interrupt */ +#define ADF_RP_INT_SRC_SEL_F_RISE_MASK BIT(2) +#define ADF_RP_INT_SRC_SEL_F_FALL_MASK GENMASK(2, 0) +#define ADF_RP_INT_SRC_SEL_RANGE_WIDTH 4 +#define ADF_COALESCED_POLL_DELAY_US 1000 +#define ADF_WQM_CSR_RPINTSOU(bank) (0x200000 + ((bank) << 12)) +#define ADF_WQM_CSR_RP_IDX_RX 1 + /* Error source registers */ #define ADF_GEN4_ERRSOU0 (0x41A200) #define ADF_GEN4_ERRSOU1 (0x41A204) @@ -150,5 +159,15 @@ void adf_gen4_set_msix_default_rttable(struct adf_accel_dev *accel_dev); void adf_gen4_set_ssm_wdtimer(struct adf_accel_dev *accel_dev); int adf_gen4_init_thd2arb_map(struct adf_accel_dev *accel_dev); u16 adf_gen4_get_ring_to_svc_map(struct adf_accel_dev *accel_dev); +int adf_gen4_bank_quiesce_coal_timer(struct adf_accel_dev *accel_dev, + u32 bank_idx, int timeout_ms); +int adf_gen4_bank_drain_start(struct adf_accel_dev *accel_dev, + u32 bank_number, int timeout_us); +void adf_gen4_bank_drain_finish(struct adf_accel_dev *accel_dev, + u32 bank_number); +int adf_gen4_bank_state_save(struct adf_accel_dev *accel_dev, u32 bank_number, + struct bank_state *state); +int adf_gen4_bank_state_restore(struct adf_accel_dev *accel_dev, + u32 bank_number, struct bank_state *state); #endif