1 files changed, 0 insertions, 566 deletions

diff --git a/drivers/crypto/qat/qat_common/adf_transport.c b/drivers/crypto/qat/qat_common/adf_transport.c
deleted file mode 100644
index 57d2622728a5..000000000000
--- a/drivers/crypto/qat/qat_common/adf_transport.c
+++ /dev/null
@@ -1,566 +0,0 @@
-/*
-  This file is provided under a dual BSD/GPLv2 license.  When using or
-  redistributing this file, you may do so under either license.
-
-  GPL LICENSE SUMMARY
-  Copyright(c) 2014 Intel Corporation.
-  This program is free software; you can redistribute it and/or modify
-  it under the terms of version 2 of the GNU General Public License as
-  published by the Free Software Foundation.
-
-  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.
-
-  Contact Information:
-  qat-linux@intel.com
-
-  BSD LICENSE
-  Copyright(c) 2014 Intel Corporation.
-  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 <linux/delay.h>
-#include "adf_accel_devices.h"
-#include "adf_transport_internal.h"
-#include "adf_transport_access_macros.h"
-#include "adf_cfg.h"
-#include "adf_common_drv.h"
-
-static inline uint32_t adf_modulo(uint32_t data, uint32_t shift)
-{
-	uint32_t div = data >> shift;
-	uint32_t mult = div << shift;
-
-	return data - mult;
-}
-
-static inline int adf_check_ring_alignment(uint64_t addr, uint64_t size)
-{
-	if (((size - 1) & addr) != 0)
-		return -EFAULT;
-	return 0;
-}
-
-static int adf_verify_ring_size(uint32_t msg_size, uint32_t msg_num)
-{
-	int i = ADF_MIN_RING_SIZE;
-
-	for (; i <= ADF_MAX_RING_SIZE; i++)
-		if ((msg_size * msg_num) == ADF_SIZE_TO_RING_SIZE_IN_BYTES(i))
-			return i;
-
-	return ADF_DEFAULT_RING_SIZE;
-}
-
-static int adf_reserve_ring(struct adf_etr_bank_data *bank, uint32_t ring)
-{
-	spin_lock(&bank->lock);
-	if (bank->ring_mask & (1 << ring)) {
-		spin_unlock(&bank->lock);
-		return -EFAULT;
-	}
-	bank->ring_mask |= (1 << ring);
-	spin_unlock(&bank->lock);
-	return 0;
-}
-
-static void adf_unreserve_ring(struct adf_etr_bank_data *bank, uint32_t ring)
-{
-	spin_lock(&bank->lock);
-	bank->ring_mask &= ~(1 << ring);
-	spin_unlock(&bank->lock);
-}
-
-static void adf_enable_ring_irq(struct adf_etr_bank_data *bank, uint32_t ring)
-{
-	spin_lock_bh(&bank->lock);
-	bank->irq_mask |= (1 << ring);
-	spin_unlock_bh(&bank->lock);
-	WRITE_CSR_INT_COL_EN(bank->csr_addr, bank->bank_number, bank->irq_mask);
-	WRITE_CSR_INT_COL_CTL(bank->csr_addr, bank->bank_number,
-			      bank->irq_coalesc_timer);
-}
-
-static void adf_disable_ring_irq(struct adf_etr_bank_data *bank, uint32_t ring)
-{
-	spin_lock_bh(&bank->lock);
-	bank->irq_mask &= ~(1 << ring);
-	spin_unlock_bh(&bank->lock);
-	WRITE_CSR_INT_COL_EN(bank->csr_addr, bank->bank_number, bank->irq_mask);
-}
-
-int adf_send_message(struct adf_etr_ring_data *ring, uint32_t *msg)
-{
-	if (atomic_add_return(1, ring->inflights) >
-	    ADF_MAX_INFLIGHTS(ring->ring_size, ring->msg_size)) {
-		atomic_dec(ring->inflights);
-		return -EAGAIN;
-	}
-	spin_lock_bh(&ring->lock);
-	memcpy((void *)((uintptr_t)ring->base_addr + ring->tail), msg,
-	       ADF_MSG_SIZE_TO_BYTES(ring->msg_size));
-
-	ring->tail = adf_modulo(ring->tail +
-				ADF_MSG_SIZE_TO_BYTES(ring->msg_size),
-				ADF_RING_SIZE_MODULO(ring->ring_size));
-	WRITE_CSR_RING_TAIL(ring->bank->csr_addr, ring->bank->bank_number,
-			    ring->ring_number, ring->tail);
-	spin_unlock_bh(&ring->lock);
-	return 0;
-}
-
-static int adf_handle_response(struct adf_etr_ring_data *ring)
-{
-	uint32_t msg_counter = 0;
-	uint32_t *msg = (uint32_t *)((uintptr_t)ring->base_addr + ring->head);
-
-	while (*msg != ADF_RING_EMPTY_SIG) {
-		ring->callback((uint32_t *)msg);
-		atomic_dec(ring->inflights);
-		*msg = ADF_RING_EMPTY_SIG;
-		ring->head = adf_modulo(ring->head +
-					ADF_MSG_SIZE_TO_BYTES(ring->msg_size),
-					ADF_RING_SIZE_MODULO(ring->ring_size));
-		msg_counter++;
-		msg = (uint32_t *)((uintptr_t)ring->base_addr + ring->head);
-	}
-	if (msg_counter > 0)
-		WRITE_CSR_RING_HEAD(ring->bank->csr_addr,
-				    ring->bank->bank_number,
-				    ring->ring_number, ring->head);
-	return 0;
-}
-
-static void adf_configure_tx_ring(struct adf_etr_ring_data *ring)
-{
-	uint32_t ring_config = BUILD_RING_CONFIG(ring->ring_size);
-
-	WRITE_CSR_RING_CONFIG(ring->bank->csr_addr, ring->bank->bank_number,
-			      ring->ring_number, ring_config);
-}
-
-static void adf_configure_rx_ring(struct adf_etr_ring_data *ring)
-{
-	uint32_t ring_config =
-			BUILD_RESP_RING_CONFIG(ring->ring_size,
-					       ADF_RING_NEAR_WATERMARK_512,
-					       ADF_RING_NEAR_WATERMARK_0);
-
-	WRITE_CSR_RING_CONFIG(ring->bank->csr_addr, ring->bank->bank_number,
-			      ring->ring_number, ring_config);
-}
-
-static int adf_init_ring(struct adf_etr_ring_data *ring)
-{
-	struct adf_etr_bank_data *bank = ring->bank;
-	struct adf_accel_dev *accel_dev = bank->accel_dev;
-	struct adf_hw_device_data *hw_data = accel_dev->hw_device;
-	uint64_t ring_base;
-	uint32_t ring_size_bytes =
-			ADF_SIZE_TO_RING_SIZE_IN_BYTES(ring->ring_size);
-
-	ring_size_bytes = ADF_RING_SIZE_BYTES_MIN(ring_size_bytes);
-	ring->base_addr = dma_alloc_coherent(&GET_DEV(accel_dev),
-					     ring_size_bytes, &ring->dma_addr,
-					     GFP_KERNEL);
-	if (!ring->base_addr)
-		return -ENOMEM;
-
-	memset(ring->base_addr, 0x7F, ring_size_bytes);
-	/* The base_addr has to be aligned to the size of the buffer */
-	if (adf_check_ring_alignment(ring->dma_addr, ring_size_bytes)) {
-		dev_err(&GET_DEV(accel_dev), "Ring address not aligned\n");
-		dma_free_coherent(&GET_DEV(accel_dev), ring_size_bytes,
-				  ring->base_addr, ring->dma_addr);
-		return -EFAULT;
-	}
-
-	if (hw_data->tx_rings_mask & (1 << ring->ring_number))
-		adf_configure_tx_ring(ring);
-
-	else
-		adf_configure_rx_ring(ring);
-
-	ring_base = BUILD_RING_BASE_ADDR(ring->dma_addr, ring->ring_size);
-	WRITE_CSR_RING_BASE(ring->bank->csr_addr, ring->bank->bank_number,
-			    ring->ring_number, ring_base);
-	spin_lock_init(&ring->lock);
-	return 0;
-}
-
-static void adf_cleanup_ring(struct adf_etr_ring_data *ring)
-{
-	uint32_t ring_size_bytes =
-			ADF_SIZE_TO_RING_SIZE_IN_BYTES(ring->ring_size);
-	ring_size_bytes = ADF_RING_SIZE_BYTES_MIN(ring_size_bytes);
-
-	if (ring->base_addr) {
-		memset(ring->base_addr, 0x7F, ring_size_bytes);
-		dma_free_coherent(&GET_DEV(ring->bank->accel_dev),
-				  ring_size_bytes, ring->base_addr,
-				  ring->dma_addr);
-	}
-}
-
-int adf_create_ring(struct adf_accel_dev *accel_dev, const char *section,
-		    uint32_t bank_num, uint32_t num_msgs,
-		    uint32_t msg_size, const char *ring_name,
-		    adf_callback_fn callback, int poll_mode,
-		    struct adf_etr_ring_data **ring_ptr)
-{
-	struct adf_etr_data *transport_data = accel_dev->transport;
-	struct adf_etr_bank_data *bank;
-	struct adf_etr_ring_data *ring;
-	char val[ADF_CFG_MAX_VAL_LEN_IN_BYTES];
-	uint32_t ring_num;
-	int ret;
-
-	if (bank_num >= GET_MAX_BANKS(accel_dev)) {
-		dev_err(&GET_DEV(accel_dev), "Invalid bank number\n");
-		return -EFAULT;
-	}
-	if (msg_size > ADF_MSG_SIZE_TO_BYTES(ADF_MAX_MSG_SIZE)) {
-		dev_err(&GET_DEV(accel_dev), "Invalid msg size\n");
-		return -EFAULT;
-	}
-	if (ADF_MAX_INFLIGHTS(adf_verify_ring_size(msg_size, num_msgs),
-			      ADF_BYTES_TO_MSG_SIZE(msg_size)) < 2) {
-		dev_err(&GET_DEV(accel_dev),
-			"Invalid ring size for given msg size\n");
-		return -EFAULT;
-	}
-	if (adf_cfg_get_param_value(accel_dev, section, ring_name, val)) {
-		dev_err(&GET_DEV(accel_dev), "Section %s, no such entry : %s\n",
-			section, ring_name);
-		return -EFAULT;
-	}
-	if (kstrtouint(val, 10, &ring_num)) {
-		dev_err(&GET_DEV(accel_dev), "Can't get ring number\n");
-		return -EFAULT;
-	}
-	if (ring_num >= ADF_ETR_MAX_RINGS_PER_BANK) {
-		dev_err(&GET_DEV(accel_dev), "Invalid ring number\n");
-		return -EFAULT;
-	}
-
-	bank = &transport_data->banks[bank_num];
-	if (adf_reserve_ring(bank, ring_num)) {
-		dev_err(&GET_DEV(accel_dev), "Ring %d, %s already exists.\n",
-			ring_num, ring_name);
-		return -EFAULT;
-	}
-	ring = &bank->rings[ring_num];
-	ring->ring_number = ring_num;
-	ring->bank = bank;
-	ring->callback = callback;
-	ring->msg_size = ADF_BYTES_TO_MSG_SIZE(msg_size);
-	ring->ring_size = adf_verify_ring_size(msg_size, num_msgs);
-	ring->head = 0;
-	ring->tail = 0;
-	atomic_set(ring->inflights, 0);
-	ret = adf_init_ring(ring);
-	if (ret)
-		goto err;
-
-	/* Enable HW arbitration for the given ring */
-	adf_update_ring_arb(ring);
-
-	if (adf_ring_debugfs_add(ring, ring_name)) {
-		dev_err(&GET_DEV(accel_dev),
-			"Couldn't add ring debugfs entry\n");
-		ret = -EFAULT;
-		goto err;
-	}
-
-	/* Enable interrupts if needed */
-	if (callback && (!poll_mode))
-		adf_enable_ring_irq(bank, ring->ring_number);
-	*ring_ptr = ring;
-	return 0;
-err:
-	adf_cleanup_ring(ring);
-	adf_unreserve_ring(bank, ring_num);
-	adf_update_ring_arb(ring);
-	return ret;
-}
-
-void adf_remove_ring(struct adf_etr_ring_data *ring)
-{
-	struct adf_etr_bank_data *bank = ring->bank;
-
-	/* Disable interrupts for the given ring */
-	adf_disable_ring_irq(bank, ring->ring_number);
-
-	/* Clear PCI config space */
-	WRITE_CSR_RING_CONFIG(bank->csr_addr, bank->bank_number,
-			      ring->ring_number, 0);
-	WRITE_CSR_RING_BASE(bank->csr_addr, bank->bank_number,
-			    ring->ring_number, 0);
-	adf_ring_debugfs_rm(ring);
-	adf_unreserve_ring(bank, ring->ring_number);
-	/* Disable HW arbitration for the given ring */
-	adf_update_ring_arb(ring);
-	adf_cleanup_ring(ring);
-}
-
-static void adf_ring_response_handler(struct adf_etr_bank_data *bank)
-{
-	uint32_t empty_rings, i;
-
-	empty_rings = READ_CSR_E_STAT(bank->csr_addr, bank->bank_number);
-	empty_rings = ~empty_rings & bank->irq_mask;
-
-	for (i = 0; i < ADF_ETR_MAX_RINGS_PER_BANK; ++i) {
-		if (empty_rings & (1 << i))
-			adf_handle_response(&bank->rings[i]);
-	}
-}
-
-void adf_response_handler(uintptr_t bank_addr)
-{
-	struct adf_etr_bank_data *bank = (void *)bank_addr;
-
-	/* Handle all the responses and reenable IRQs */
-	adf_ring_response_handler(bank);
-	WRITE_CSR_INT_FLAG_AND_COL(bank->csr_addr, bank->bank_number,
-				   bank->irq_mask);
-}
-
-static inline int adf_get_cfg_int(struct adf_accel_dev *accel_dev,
-				  const char *section, const char *format,
-				  uint32_t key, uint32_t *value)
-{
-	char key_buf[ADF_CFG_MAX_KEY_LEN_IN_BYTES];
-	char val_buf[ADF_CFG_MAX_VAL_LEN_IN_BYTES];
-
-	snprintf(key_buf, ADF_CFG_MAX_KEY_LEN_IN_BYTES, format, key);
-
-	if (adf_cfg_get_param_value(accel_dev, section, key_buf, val_buf))
-		return -EFAULT;
-
-	if (kstrtouint(val_buf, 10, value))
-		return -EFAULT;
-	return 0;
-}
-
-static void adf_get_coalesc_timer(struct adf_etr_bank_data *bank,
-				  const char *section,
-				  uint32_t bank_num_in_accel)
-{
-	if (adf_get_cfg_int(bank->accel_dev, section,
-			    ADF_ETRMGR_COALESCE_TIMER_FORMAT,
-			    bank_num_in_accel, &bank->irq_coalesc_timer))
-		bank->irq_coalesc_timer = ADF_COALESCING_DEF_TIME;
-
-	if (ADF_COALESCING_MAX_TIME < bank->irq_coalesc_timer ||
-	    ADF_COALESCING_MIN_TIME > bank->irq_coalesc_timer)
-		bank->irq_coalesc_timer = ADF_COALESCING_DEF_TIME;
-}
-
-static int adf_init_bank(struct adf_accel_dev *accel_dev,
-			 struct adf_etr_bank_data *bank,
-			 uint32_t bank_num, void __iomem *csr_addr)
-{
-	struct adf_hw_device_data *hw_data = accel_dev->hw_device;
-	struct adf_etr_ring_data *ring;
-	struct adf_etr_ring_data *tx_ring;
-	uint32_t i, coalesc_enabled = 0;
-
-	memset(bank, 0, sizeof(*bank));
-	bank->bank_number = bank_num;
-	bank->csr_addr = csr_addr;
-	bank->accel_dev = accel_dev;
-	spin_lock_init(&bank->lock);
-
-	/* Enable IRQ coalescing always. This will allow to use
-	 * the optimised flag and coalesc register.
-	 * If it is disabled in the config file just use min time value */
-	if ((adf_get_cfg_int(accel_dev, "Accelerator0",
-			     ADF_ETRMGR_COALESCING_ENABLED_FORMAT, bank_num,
-			     &coalesc_enabled) == 0) && coalesc_enabled)
-		adf_get_coalesc_timer(bank, "Accelerator0", bank_num);
-	else
-		bank->irq_coalesc_timer = ADF_COALESCING_MIN_TIME;
-
-	for (i = 0; i < ADF_ETR_MAX_RINGS_PER_BANK; i++) {
-		WRITE_CSR_RING_CONFIG(csr_addr, bank_num, i, 0);
-		WRITE_CSR_RING_BASE(csr_addr, bank_num, i, 0);
-		ring = &bank->rings[i];
-		if (hw_data->tx_rings_mask & (1 << i)) {
-			ring->inflights =
-				kzalloc_node(sizeof(atomic_t),
-					     GFP_KERNEL,
-					     dev_to_node(&GET_DEV(accel_dev)));
-			if (!ring->inflights)
-				goto err;
-		} else {
-			if (i < hw_data->tx_rx_gap) {
-				dev_err(&GET_DEV(accel_dev),
-					"Invalid tx rings mask config\n");
-				goto err;
-			}
-			tx_ring = &bank->rings[i - hw_data->tx_rx_gap];
-			ring->inflights = tx_ring->inflights;
-		}
-	}
-	if (adf_bank_debugfs_add(bank)) {
-		dev_err(&GET_DEV(accel_dev),
-			"Failed to add bank debugfs entry\n");
-		goto err;
-	}
-
-	WRITE_CSR_INT_FLAG(csr_addr, bank_num, ADF_BANK_INT_FLAG_CLEAR_MASK);
-	WRITE_CSR_INT_SRCSEL(csr_addr, bank_num);
-	return 0;
-err:
-	for (i = 0; i < ADF_ETR_MAX_RINGS_PER_BANK; i++) {
-		ring = &bank->rings[i];
-		if (hw_data->tx_rings_mask & (1 << i))
-			kfree(ring->inflights);
-	}
-	return -ENOMEM;
-}
-
-/**
- * adf_init_etr_data() - Initialize transport rings for acceleration device
- * @accel_dev:  Pointer to acceleration device.
- *
- * Function is the initializes the communications channels (rings) to the
- * acceleration device accel_dev.
- * To be used by QAT device specific drivers.
- *
- * Return: 0 on success, error code otherwise.
- */
-int adf_init_etr_data(struct adf_accel_dev *accel_dev)
-{
-	struct adf_etr_data *etr_data;
-	struct adf_hw_device_data *hw_data = accel_dev->hw_device;
-	void __iomem *csr_addr;
-	uint32_t size;
-	uint32_t num_banks = 0;
-	int i, ret;
-
-	etr_data = kzalloc_node(sizeof(*etr_data), GFP_KERNEL,
-				dev_to_node(&GET_DEV(accel_dev)));
-	if (!etr_data)
-		return -ENOMEM;
-
-	num_banks = GET_MAX_BANKS(accel_dev);
-	size = num_banks * sizeof(struct adf_etr_bank_data);
-	etr_data->banks = kzalloc_node(size, GFP_KERNEL,
-				       dev_to_node(&GET_DEV(accel_dev)));
-	if (!etr_data->banks) {
-		ret = -ENOMEM;
-		goto err_bank;
-	}
-
-	accel_dev->transport = etr_data;
-	i = hw_data->get_etr_bar_id(hw_data);
-	csr_addr = accel_dev->accel_pci_dev.pci_bars[i].virt_addr;
-
-	/* accel_dev->debugfs_dir should always be non-NULL here */
-	etr_data->debug = debugfs_create_dir("transport",
-					     accel_dev->debugfs_dir);
-	if (!etr_data->debug) {
-		dev_err(&GET_DEV(accel_dev),
-			"Unable to create transport debugfs entry\n");
-		ret = -ENOENT;
-		goto err_bank_debug;
-	}
-
-	for (i = 0; i < num_banks; i++) {
-		ret = adf_init_bank(accel_dev, &etr_data->banks[i], i,
-				    csr_addr);
-		if (ret)
-			goto err_bank_all;
-	}
-
-	return 0;
-
-err_bank_all:
-	debugfs_remove(etr_data->debug);
-err_bank_debug:
-	kfree(etr_data->banks);
-err_bank:
-	kfree(etr_data);
-	accel_dev->transport = NULL;
-	return ret;
-}
-EXPORT_SYMBOL_GPL(adf_init_etr_data);
-
-static void cleanup_bank(struct adf_etr_bank_data *bank)
-{
-	uint32_t i;
-
-	for (i = 0; i < ADF_ETR_MAX_RINGS_PER_BANK; i++) {
-		struct adf_accel_dev *accel_dev = bank->accel_dev;
-		struct adf_hw_device_data *hw_data = accel_dev->hw_device;
-		struct adf_etr_ring_data *ring = &bank->rings[i];
-
-		if (bank->ring_mask & (1 << i))
-			adf_cleanup_ring(ring);
-
-		if (hw_data->tx_rings_mask & (1 << i))
-			kfree(ring->inflights);
-	}
-	adf_bank_debugfs_rm(bank);
-	memset(bank, 0, sizeof(*bank));
-}
-
-static void adf_cleanup_etr_handles(struct adf_accel_dev *accel_dev)
-{
-	struct adf_etr_data *etr_data = accel_dev->transport;
-	uint32_t i, num_banks = GET_MAX_BANKS(accel_dev);
-
-	for (i = 0; i < num_banks; i++)
-		cleanup_bank(&etr_data->banks[i]);
-}
-
-/**
- * adf_cleanup_etr_data() - Clear transport rings for acceleration device
- * @accel_dev:  Pointer to acceleration device.
- *
- * Function is the clears the communications channels (rings) of the
- * acceleration device accel_dev.
- * To be used by QAT device specific drivers.
- *
- * Return: void
- */
-void adf_cleanup_etr_data(struct adf_accel_dev *accel_dev)
-{
-	struct adf_etr_data *etr_data = accel_dev->transport;
-
-	if (etr_data) {
-		adf_cleanup_etr_handles(accel_dev);
-		debugfs_remove(etr_data->debug);
-		kfree(etr_data->banks);
-		kfree(etr_data);
-		accel_dev->transport = NULL;
-	}
-}
-EXPORT_SYMBOL_GPL(adf_cleanup_etr_data);