diff options
author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/crypto/qat/qat_dh895xcc/adf_admin.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/crypto/qat/qat_dh895xcc/adf_admin.c')
-rw-r--r-- | kernel/drivers/crypto/qat/qat_dh895xcc/adf_admin.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/kernel/drivers/crypto/qat/qat_dh895xcc/adf_admin.c b/kernel/drivers/crypto/qat/qat_dh895xcc/adf_admin.c new file mode 100644 index 000000000..e4666065c --- /dev/null +++ b/kernel/drivers/crypto/qat/qat_dh895xcc/adf_admin.c @@ -0,0 +1,145 @@ +/* + 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/types.h> +#include <linux/mutex.h> +#include <linux/slab.h> +#include <linux/delay.h> +#include <linux/pci.h> +#include <linux/dma-mapping.h> +#include <adf_accel_devices.h> +#include "adf_drv.h" +#include "adf_dh895xcc_hw_data.h" + +#define ADF_ADMINMSG_LEN 32 + +struct adf_admin_comms { + dma_addr_t phy_addr; + void *virt_addr; + void __iomem *mailbox_addr; + struct mutex lock; /* protects adf_admin_comms struct */ +}; + +int adf_put_admin_msg_sync(struct adf_accel_dev *accel_dev, + uint32_t ae, void *in, void *out) +{ + struct adf_admin_comms *admin = accel_dev->admin; + int offset = ae * ADF_ADMINMSG_LEN * 2; + void __iomem *mailbox = admin->mailbox_addr; + int mb_offset = ae * ADF_DH895XCC_MAILBOX_STRIDE; + int times, received; + + mutex_lock(&admin->lock); + + if (ADF_CSR_RD(mailbox, mb_offset) == 1) { + mutex_unlock(&admin->lock); + return -EAGAIN; + } + + memcpy(admin->virt_addr + offset, in, ADF_ADMINMSG_LEN); + ADF_CSR_WR(mailbox, mb_offset, 1); + received = 0; + for (times = 0; times < 50; times++) { + msleep(20); + if (ADF_CSR_RD(mailbox, mb_offset) == 0) { + received = 1; + break; + } + } + if (received) + memcpy(out, admin->virt_addr + offset + + ADF_ADMINMSG_LEN, ADF_ADMINMSG_LEN); + else + dev_err(&GET_DEV(accel_dev), + "Failed to send admin msg to accelerator\n"); + + mutex_unlock(&admin->lock); + return received ? 0 : -EFAULT; +} + +int adf_init_admin_comms(struct adf_accel_dev *accel_dev) +{ + struct adf_admin_comms *admin; + struct adf_bar *pmisc = &GET_BARS(accel_dev)[ADF_DH895XCC_PMISC_BAR]; + void __iomem *csr = pmisc->virt_addr; + void __iomem *mailbox = csr + ADF_DH895XCC_MAILBOX_BASE_OFFSET; + uint64_t reg_val; + + admin = kzalloc_node(sizeof(*accel_dev->admin), GFP_KERNEL, + dev_to_node(&GET_DEV(accel_dev))); + if (!admin) + return -ENOMEM; + admin->virt_addr = dma_zalloc_coherent(&GET_DEV(accel_dev), PAGE_SIZE, + &admin->phy_addr, GFP_KERNEL); + if (!admin->virt_addr) { + dev_err(&GET_DEV(accel_dev), "Failed to allocate dma buff\n"); + kfree(admin); + return -ENOMEM; + } + reg_val = (uint64_t)admin->phy_addr; + ADF_CSR_WR(csr, ADF_DH895XCC_ADMINMSGUR_OFFSET, reg_val >> 32); + ADF_CSR_WR(csr, ADF_DH895XCC_ADMINMSGLR_OFFSET, reg_val); + mutex_init(&admin->lock); + admin->mailbox_addr = mailbox; + accel_dev->admin = admin; + return 0; +} + +void adf_exit_admin_comms(struct adf_accel_dev *accel_dev) +{ + struct adf_admin_comms *admin = accel_dev->admin; + + if (!admin) + return; + + if (admin->virt_addr) + dma_free_coherent(&GET_DEV(accel_dev), PAGE_SIZE, + admin->virt_addr, admin->phy_addr); + + mutex_destroy(&admin->lock); + kfree(admin); + accel_dev->admin = NULL; +} |