2010-11-17 23:38:38

by Allyn, Mark A

Subject: [PATCH 1/1] sep: Introduce sep driver

This driver is for the Security Processor, a dedicated encryption
and decryption driver that is used on the Intel mobile platform.

This has been checked with checkpatch and there are four
warnings for lines over 80 charactors.

There is one compile warning. This is for a function that is
only used if the rar register driver is needed. There is an
ifdef in a header file that stubs out the rar register driver
if the rar register is not configured.

This patch is referenced off of next-20101117.

This driver does add a configuration, which is CONFIG_DX_SEP.

Signed-off-by: Mark Allyn <[email protected]>
---
drivers/staging/Kconfig | 2 +
drivers/staging/Makefile | 1 +
drivers/staging/sep/Kconfig | 11 +
drivers/staging/sep/Makefile | 2 +
drivers/staging/sep/TODO | 12 +
drivers/staging/sep/sep_dev.h | 156 ++
drivers/staging/sep/sep_driver.c | 4152 ++++++++++++++++++++++++++++++
drivers/staging/sep/sep_driver_api.h | 309 +++
drivers/staging/sep/sep_driver_config.h | 428 +++
drivers/staging/sep/sep_driver_hw_defs.h | 234 ++
10 files changed, 5307 insertions(+), 0 deletions(-)
create mode 100644 drivers/staging/sep/Kconfig
create mode 100644 drivers/staging/sep/Makefile
create mode 100644 drivers/staging/sep/TODO
create mode 100644 drivers/staging/sep/sep_dev.h
create mode 100644 drivers/staging/sep/sep_driver.c
create mode 100644 drivers/staging/sep/sep_driver_api.h
create mode 100644 drivers/staging/sep/sep_driver_config.h
create mode 100644 drivers/staging/sep/sep_driver_hw_defs.h

diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig
index 6f2afb3..cd02672 100644
--- a/drivers/staging/Kconfig
+++ b/drivers/staging/Kconfig
@@ -129,6 +129,8 @@ source "drivers/staging/vme/Kconfig"

source "drivers/staging/memrar/Kconfig"

+source "drivers/staging/sep/Kconfig"
+
source "drivers/staging/iio/Kconfig"

source "drivers/staging/zram/Kconfig"
diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile
index 20c5641..75c0c1f 100644
--- a/drivers/staging/Makefile
+++ b/drivers/staging/Makefile
@@ -42,6 +42,7 @@ obj-$(CONFIG_FB_UDL) += udlfb/
obj-$(CONFIG_HYPERV) += hv/
obj-$(CONFIG_VME_BUS) += vme/
obj-$(CONFIG_MRST_RAR_HANDLER) += memrar/
+obj-$(CONFIG_DX_SEP) += sep/
obj-$(CONFIG_IIO) += iio/
obj-$(CONFIG_ZRAM) += zram/
obj-$(CONFIG_WLAGS49_H2) += wlags49_h2/
diff --git a/drivers/staging/sep/Kconfig b/drivers/staging/sep/Kconfig
new file mode 100644
index 0000000..34f3ef5
--- /dev/null
+++ b/drivers/staging/sep/Kconfig
@@ -0,0 +1,11 @@
+config DX_SEP
+ tristate "Discretix SEP driver"
+ depends on PCI
+ default y
+ help
+ Discretix SEP driver; used for the security processor subsystem
+ on bard the Intel Mobile Internet Device.
+
+ The driver's name is sep_driver.
+
+ If unsure, select N.
diff --git a/drivers/staging/sep/Makefile b/drivers/staging/sep/Makefile
new file mode 100644
index 0000000..628d5f9
--- /dev/null
+++ b/drivers/staging/sep/Makefile
@@ -0,0 +1,2 @@
+obj-$(CONFIG_DX_SEP) := sep_driver.o
+
diff --git a/drivers/staging/sep/TODO b/drivers/staging/sep/TODO
new file mode 100644
index 0000000..371ee27
--- /dev/null
+++ b/drivers/staging/sep/TODO
@@ -0,0 +1,12 @@
+Todo's so far (from Alan Cox)
+- Fix firmware loading - Done 09/10 M. Allyn
+- Get firmware into firmware git tree - Firmware is non open source
+- Review and tidy each algorithm function - Done 09/10 M. Allyn
+- Check whether it can be plugged into any of the kernel crypto API
+ interfaces - Crypto API 'glue' is still not ready to submit
+- Do something about the magic shared memory interface and replace it
+ with something saner (in Linux terms) - Done 09/10 M. Allyn
+- Clean up unused ioctls - Needs vendor help
+- Clean up unused fields in ioctl structures - Needs vendor help
+- 64 bit size to be used for all user space addresses passed
+ to ioctl - Done 10/10 M. Allyn
diff --git a/drivers/staging/sep/sep_dev.h b/drivers/staging/sep/sep_dev.h
new file mode 100644
index 0000000..7b4993b
--- /dev/null
+++ b/drivers/staging/sep/sep_dev.h
@@ -0,0 +1,156 @@
+#ifndef __SEP_DEV_H__
+#define __SEP_DEV_H__
+
+/*
+ *
+ * sep_dev.h - Security Processor Device Structures
+ *
+ * Copyright(c) 2009,2010 Intel Corporation. All rights reserved.
+ * Contributions(c) 2009,2010 Discretix. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59
+ * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * CONTACTS:
+ *
+ * Mark Allyn [email protected]
+ * Jayant Mangalampalli [email protected]
+ *
+ * CHANGES
+ * 2010.09.14 upgrade to Medfield
+ */
+
+struct sep_device {
+ /* pointer to pci dev */
+ struct pci_dev *pdev;
+
+ /* character device file */
+ struct cdev sep_cdev;
+ struct cdev sep_daemon_cdev;
+ struct cdev sep_singleton_cdev;
+
+ /* devices (using misc dev) */
+ struct miscdevice miscdev_sep;
+ struct miscdevice miscdev_singleton;
+ struct miscdevice miscdev_daemon;
+
+ /* major / minor numbers of device */
+ dev_t sep_devno;
+ dev_t sep_daemon_devno;
+ dev_t sep_singleton_devno;
+
+ struct mutex sep_mutex;
+ struct mutex ioctl_mutex;
+ spinlock_t snd_rply_lck;
+
+ /* flags to indicate use and lock status of sep */
+ u32 pid_doing_transaction;
+ unsigned long in_use_flags;
+
+ /* request daemon alread open */
+ unsigned long request_daemon_open;
+
+ /* 1 = Moorestown; 0 = Medfield */
+ int mrst;
+
+ /* address of the shared memory allocated during init for SEP driver
+ (coherent alloc) */
+ dma_addr_t shared_bus;
+ size_t shared_size;
+ void *shared_addr;
+
+ /* restricted access region (coherent alloc) */
+ dma_addr_t rar_bus;
+ size_t rar_size;
+ void *rar_addr;
+
+ /* Firmware regions; cache is at rar for Moorestown and
+ resident is at rar for Medfield */
+ dma_addr_t cache_bus;
+ size_t cache_size;
+ void *cache_addr;
+
+ dma_addr_t resident_bus;
+ size_t resident_size;
+ void *resident_addr;
+
+ /* sep's scratchpad */
+ dma_addr_t dcache_bus;
+ size_t dcache_size;
+ void *dcache_addr;
+
+ /* Only used on Medfield */
+ dma_addr_t extapp_bus;
+ size_t extapp_size;
+ void *extapp_addr;
+
+ /* start address of the access to the SEP registers from driver */
+ dma_addr_t reg_physical_addr;
+ dma_addr_t reg_physical_end;
+ void __iomem *reg_addr;
+
+ /* wait queue head (event) of the driver */
+ wait_queue_head_t event;
+ wait_queue_head_t event_request_daemon;
+ wait_queue_head_t event_mmap;
+
+ struct sep_caller_id_entry
+ caller_id_table[SEP_CALLER_ID_TABLE_NUM_ENTRIES];
+
+ /* access flag for singleton device */
+ unsigned long singleton_access_flag;
+
+ /* transaction counter that coordinates the
+ transactions between SEP and HOST */
+ unsigned long send_ct;
+ /* counter for the messages from sep */
+ unsigned long reply_ct;
+ /* counter for the number of bytes allocated in the pool for the
+ current transaction */
+ long data_pool_bytes_allocated;
+
+ u32 num_of_data_allocations;
+
+ /* number of the lli tables created in the current transaction */
+ u32 num_lli_tables_created;
+
+ /* number of data control blocks */
+ u32 nr_dcb_creat;
+
+ struct sep_dma_resource dma_res_arr[SEP_MAX_NUM_SYNC_DMA_OPS];
+
+};
+
+static inline void sep_write_reg(struct sep_device *dev, int reg, u32 value)
+{
+ void __iomem *addr = dev->reg_addr + reg;
+ writel(value, addr);
+}
+
+static inline u32 sep_read_reg(struct sep_device *dev, int reg)
+{
+ void __iomem *addr = dev->reg_addr + reg;
+ return readl(addr);
+}
+
+/* wait for SRAM write complete(indirect write */
+static inline void sep_wait_sram_write(struct sep_device *dev)
+{
+ u32 reg_val;
+ do
+ reg_val = sep_read_reg(dev, HW_SRAM_DATA_READY_REG_ADDR);
+ while (!(reg_val & 1));
+}
+
+
+#endif
diff --git a/drivers/staging/sep/sep_driver.c b/drivers/staging/sep/sep_driver.c
new file mode 100644
index 0000000..ef36239
--- /dev/null
+++ b/drivers/staging/sep/sep_driver.c
@@ -0,0 +1,4152 @@
+/*
+ *
+ * sep_driver.c - Security Processor Driver main group of functions
+ *
+ * Copyright(c) 2009,2010 Intel Corporation. All rights reserved.
+ * Contributions(c) 2009,2010 Discretix. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59
+ * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * CONTACTS:
+ *
+ * Mark Allyn [email protected]
+ * Jayant Mangalampalli [email protected]
+ *
+ * CHANGES:
+ *
+ * 2009.06.26 Initial publish
+ * 2010.09.14 Upgrade to Medfield
+ *
+ */
+#define DEBUG
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/miscdevice.h>
+#include <linux/fs.h>
+#include <linux/cdev.h>
+#include <linux/kdev_t.h>
+#include <linux/mutex.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/poll.h>
+#include <linux/wait.h>
+#include <linux/pci.h>
+#include <linux/firmware.h>
+#include <linux/slab.h>
+#include <linux/ioctl.h>
+#include <asm/current.h>
+#include <linux/ioport.h>
+#include <linux/io.h>
+#include <linux/interrupt.h>
+#include <linux/pagemap.h>
+#include <asm/cacheflush.h>
+#include <linux/sched.h>
+#include <linux/delay.h>
+
+#include <linux/netlink.h>
+#include <linux/connector.h>
+#include <linux/cn_proc.h>
+
+#include "sep_driver_hw_defs.h"
+#include "sep_driver_config.h"
+#include "sep_driver_api.h"
+#include "sep_dev.h"
+
+/*----------------------------------------
+ DEFINES
+-----------------------------------------*/
+
+#define SEP_RAR_IO_MEM_REGION_SIZE 0x40000
+
+/*--------------------------------------------
+ GLOBAL variables
+--------------------------------------------*/
+
+/* Keep this a single static object for now to keep the conversion easy */
+
+static struct sep_device *sep_dev;
+
+/**
+ * sep_load_firmware - copy firmware cache/resident
+ * This functions copies the cache and resident from their source
+ * location into destination shared memory.
+ * @sep: pointer to struct sep_device
+ */
+
+static int sep_load_firmware(struct sep_device *sep)
+{
+ const struct firmware *fw;
+ char *cache_name = "cache.image.bin";
+ char *res_name = "resident.image.bin";
+ char *extapp_name = "extapp.image.bin";
+
+ int error = 0;
+ unsigned int work1, work2, work3;
+
+ /* set addresses and load resident */
+ sep->resident_bus = sep->rar_bus;
+ sep->resident_addr = sep->rar_addr;
+
+ error = request_firmware(&fw, res_name, &sep->pdev->dev);
+ if (error) {
+ dev_warn(&sep->pdev->dev, "cant request resident fw\n");
+ return error;
+ }
+
+ memcpy(sep->resident_addr, (void *)fw->data, fw->size);
+ sep->resident_size = fw->size;
+ release_firmware(fw);
+
+ dev_dbg(&sep->pdev->dev, "resident virtual is %p\n",
+ sep->resident_addr);
+ dev_dbg(&sep->pdev->dev, "residnet bus is %lx\n",
+ (unsigned long)sep->resident_bus);
+ dev_dbg(&sep->pdev->dev, "resident size is %08x\n",
+ sep->resident_size);
+
+ /* set addresses for dcache (no loading needed) */
+ work1 = (unsigned int)sep->resident_bus;
+ work2 = (unsigned int)sep->resident_size;
+ work3 = (work1 + work2 + (1024 * 4)) & 0xfffff000;
+ sep->dcache_bus = (dma_addr_t)work3;
+
+ work1 = (unsigned int)sep->resident_addr;
+ work2 = (unsigned int)sep->resident_size;
+ work3 = (work1 + work2 + (1024 * 4)) & 0xfffff000;
+ sep->dcache_addr = (void *)work3;
+
+ sep->dcache_size = 1024 * 128;
+
+ /* set addresses and load cache */
+ sep->cache_bus = sep->dcache_bus + sep->dcache_size;
+ sep->cache_addr = sep->dcache_addr + sep->dcache_size;
+
+ error = request_firmware(&fw, cache_name, &sep->pdev->dev);
+ if (error) {
+ dev_warn(&sep->pdev->dev, "cant request cache fw\n");
+ return error;
+ }
+
+ memcpy(sep->cache_addr, (void *)fw->data, fw->size);
+ sep->cache_size = fw->size;
+ release_firmware(fw);
+
+ dev_dbg(&sep->pdev->dev, "cache virtual is %p\n",
+ sep->cache_addr);
+ dev_dbg(&sep->pdev->dev, "cache bus is %08lx\n",
+ (unsigned long)sep->cache_bus);
+ dev_dbg(&sep->pdev->dev, "cache size is %08x\n",
+ sep->cache_size);
+
+ /* set addresses and load extapp */
+ sep->extapp_bus = sep->cache_bus + (1024 * 370);
+ sep->extapp_addr = sep->cache_addr + (1024 * 370);
+
+ error = request_firmware(&fw, extapp_name, &sep->pdev->dev);
+ if (error) {
+ dev_warn(&sep->pdev->dev, "cant request extapp fw\n");
+ return error;
+ }
+
+ memcpy(sep->extapp_addr, (void *)fw->data, fw->size);
+ sep->extapp_size = fw->size;
+ release_firmware(fw);
+
+ dev_dbg(&sep->pdev->dev, "extapp virtual is %p\n",
+ sep->extapp_addr);
+ dev_dbg(&sep->pdev->dev, "extapp bus is %08llx\n",
+ (unsigned long long)sep->extapp_bus);
+ dev_dbg(&sep->pdev->dev, "extapp size is %08x\n",
+ sep->extapp_size);
+
+ return error;
+}
+
+MODULE_FIRMWARE("sep/cache.image.bin");
+MODULE_FIRMWARE("sep/resident.image.bin");
+MODULE_FIRMWARE("sep/extapp.image.bin");
+
+/**
+ * sep_dump_message - dump the message that is pending
+ * @sep: sep device
+ */
+
+static void sep_dump_message(struct sep_device *sep)
+{
+ int count;
+ u32 *p = sep->shared_addr;
+ for (count = 0; count < 12 * 4; count += 4)
+ dev_dbg(&sep->pdev->dev,
+ "Word %d of the message is %x\n",
+ count, *p++);
+}
+
+/**
+ * sep_map_and_alloc_shared_area - allocate shared block
+ * @sep: security processor
+ * @size: size of shared area
+ */
+
+static int sep_map_and_alloc_shared_area(struct sep_device *sep)
+{
+ sep->shared_addr = dma_alloc_coherent(&sep->pdev->dev,
+ sep->shared_size,
+ &sep->shared_bus, GFP_KERNEL);
+
+ if (!sep->shared_addr) {
+ dev_warn(&sep->pdev->dev,
+ "shared memory dma_alloc_coherent failed\n");
+ return -ENOMEM;
+ }
+ dev_dbg(&sep->pdev->dev,
+ "sep: shared_addr %x bytes @%p (bus %llx)\n",
+ sep->shared_size, sep->shared_addr,
+ (unsigned long long)sep->shared_bus);
+ return 0;
+}
+
+/**
+ * sep_unmap_and_free_shared_area - free shared block
+ * @sep: security processor
+ */
+static void sep_unmap_and_free_shared_area(struct sep_device *sep)
+{
+ dev_dbg(&sep->pdev->dev, "shared area unmap and free\n");
+ dma_free_coherent(&sep->pdev->dev, sep->shared_size,
+ sep->shared_addr, sep->shared_bus);
+}
+
+/**
+ * sep_shared_bus_to_virt - convert bus/virt addresses
+ * Returns virtual address inside the shared area according
+ * to the bus address.
+ * @sep: pointer to struct sep_device
+ * @bus_address: address to convert
+ */
+
+static void *sep_shared_bus_to_virt(struct sep_device *sep,
+ dma_addr_t bus_address)
+{
+ return sep->shared_addr + (bus_address - sep->shared_bus);
+}
+
+/**
+ * open function for the singleton driver
+ * @inode_ptr struct inode *
+ * @file_ptr struct file *
+ */
+
+static int sep_singleton_open(struct inode *inode_ptr, struct file *file_ptr)
+{
+ int error = 0;
+
+ struct sep_device *sep;
+
+ /**
+ * get the sep device structure and use it for the
+ * private_data field in filp for other methods
+ */
+ sep = sep_dev;
+
+ file_ptr->private_data = sep;
+
+ dev_dbg(&sep->pdev->dev, "Singleton open for pid %d\n",
+ current->pid);
+
+ dev_dbg(&sep->pdev->dev, "calling test and set for singleton 0\n");
+ if (test_and_set_bit(0, &sep->singleton_access_flag)) {
+ error = -EBUSY;
+ goto end_function;
+ }
+
+ dev_dbg(&sep->pdev->dev,
+ "sep_singleton_open end\n");
+end_function:
+
+ return error;
+}
+
+/**
+ * sep_open - device open method
+ * @inode: inode of sep device
+ * @filp: file handle to sep device
+ *
+ * Open method for the SEP device. Called when userspace opens
+ * the SEP device node. Must also release the memory data pool
+ * allocations.
+ *
+ * Returns zero on success otherwise an error code.
+ */
+
+static int sep_open(struct inode *inode, struct file *filp)
+{
+ struct sep_device *sep;
+
+ /**
+ * get the sep device structure and use it for the
+ * private_data field in filp for other methods
+ */
+ sep = sep_dev;
+ filp->private_data = sep;
+
+ dev_dbg(&sep->pdev->dev, "Open for pid %d\n", current->pid);
+
+ /* anyone can open; locking takes place at transaction level */
+ return 0;
+}
+
+/**
+ * sep_singleton_release - close a SEP singleton device
+ * @inode: inode of SEP device
+ * @filp: file handle being closed
+ *
+ * Called on the final close of a SEP device. As the open protects against
+ * multiple simultaenous opens that means this method is called when the
+ * final reference to the open handle is dropped.
+ */
+
+static int sep_singleton_release(struct inode *inode, struct file *filp)
+{
+ struct sep_device *sep = filp->private_data;
+
+ dev_dbg(&sep->pdev->dev, "Singleton release for pid %d\n",
+ current->pid);
+
+ clear_bit(0, &sep->singleton_access_flag);
+
+ return 0;
+}
+
+/**
+ * sep_request_daemonopen - request daemon open method
+ * @inode: inode of sep device
+ * @filp: file handle to sep device
+ *
+ * Open method for the SEP request daemon. Called when
+ * request daemon in userspace opens
+ * the SEP device node.
+ *
+ * Returns zero on success otherwise an error code.
+ */
+
+static int sep_request_daemon_open(struct inode *inode, struct file *filp)
+{
+ struct sep_device *sep;
+
+ int error = 0;
+
+ sep = sep_dev;
+ filp->private_data = sep;
+
+ dev_dbg(&sep->pdev->dev, "Request daemon open for pid %d\n",
+ current->pid);
+
+ /* There is supposed to be only one request daemon */
+ dev_dbg(&sep->pdev->dev, "calling test and set for req_dmon open 0\n");
+ if (test_and_set_bit(0, &sep->request_daemon_open)) {
+ error = -EBUSY;
+ goto end_function;
+ }
+
+end_function:
+
+ return error;
+}
+
+/**
+ * sep_request_daemon_release - close a SEP daemon
+ * @inode: inode of SEP device
+ * @filp: file handle being closed
+ *
+ * Called on the final close of a SEP daemon.
+ */
+
+static int sep_request_daemon_release(struct inode *inode, struct file *filp)
+{
+ struct sep_device *sep = filp->private_data;
+
+ dev_dbg(&sep->pdev->dev, "Reques daemon release for pid %d\n",
+ current->pid);
+
+ /* clear the request_daemon_open flag */
+ clear_bit(0, &sep->request_daemon_open);
+
+ return 0;
+}
+
+/**
+ * This function raises interrupt to SEPm that signals that is has a
+ * new command from HOST
+ * @sep: struct sep_device *
+ */
+static int sep_req_daemon_send_reply_command_handler(struct sep_device *sep)
+{
+ int error = 0;
+
+ unsigned long lck_flags;
+
+ dev_dbg(&sep->pdev->dev,
+ "sep_req_daemon_send_reply_command_handler start\n");
+
+ error = 0;
+
+ sep_dump_message(sep);
+
+ /* counters are lockable region */
+ spin_lock_irqsave(&sep->snd_rply_lck, lck_flags);
+ sep->send_ct++;
+ sep->reply_ct++;
+
+ /* send the interrupt to SEP */
+ sep_write_reg(sep, HW_HOST_HOST_SEP_GPR2_REG_ADDR,
+ sep->send_ct);
+
+ sep->send_ct++;
+
+ spin_unlock_irqrestore(&sep->snd_rply_lck, lck_flags);
+
+ dev_dbg(&sep->pdev->dev,
+ "sep_req_daemon_send_reply send_ct %lx reply_ct %lx\n",
+ sep->send_ct, sep->reply_ct);
+
+ dev_dbg(&sep->pdev->dev,
+ "sep_req_daemon_send_reply_command_handler end\n");
+
+ return error;
+}
+
+
+/**
+ * sep_free_dma_table_data_handler - handles the request
+ * for freeing dma table for synhronic actions
+ * @sep: pointere to struct sep_device
+ */
+
+static int sep_free_dma_table_data_handler(struct sep_device *sep)
+{
+ /* counter */
+ int count = 0;
+
+ /* dcb counter */
+ int dcb_counter = 0;
+
+ /* pointer to the current dma_resource struct */
+ struct sep_dma_resource *dma;
+
+ dev_dbg(&sep->pdev->dev,
+ "sep_free_dma_table_data_handler start\n");
+
+
+ for (dcb_counter = 0; dcb_counter < sep->nr_dcb_creat;
+ dcb_counter++) {
+
+ dma = &sep->dma_res_arr[dcb_counter];
+
+ /* unmap and free input map array */
+ if (dma->in_map_array) {
+
+ for (count = 0; count < dma->in_num_pages;
+ count++) {
+
+ dma_unmap_page(&sep->pdev->dev,
+ dma->in_map_array[count].dma_addr,
+ dma->in_map_array[count].size,
+ DMA_TO_DEVICE);
+ }
+
+ kfree(dma->in_map_array);
+ }
+
+ /* unmap output map array, DON'T free it yet */
+ if (dma->out_map_array) {
+ for (count = 0; count < dma->out_num_pages;
+ count++) {
+
+ dma_unmap_page(&sep->pdev->dev,
+ dma->out_map_array[count].dma_addr,
+ dma->out_map_array[count].size,
+ DMA_FROM_DEVICE);
+ }
+
+ kfree(dma->out_map_array);
+ }
+
+ /* free page cache for output */
+ if (dma->in_page_array) {
+ for (count = 0; count < dma->in_num_pages;
+ count++) {
+
+ flush_dcache_page(dma->in_page_array[count]);
+ page_cache_release(dma->in_page_array[count]);
+ }
+
+ kfree(dma->in_page_array);
+
+ }
+
+ if (dma->out_page_array) {
+ for (count = 0; count < dma->out_num_pages;
+ count++) {
+
+ if (!PageReserved(dma->out_page_array[count]))
+ SetPageDirty(dma->out_page_array[count]);
+
+ flush_dcache_page(dma->out_page_array[count]);
+ page_cache_release(dma->out_page_array[count]);
+ }
+
+ kfree(dma->out_page_array);
+ }
+
+ /* reset all the values */
+ dma->in_page_array = 0;
+ dma->out_page_array = 0;
+ dma->in_num_pages = 0;
+ dma->out_num_pages = 0;
+ dma->in_map_array = 0;
+ dma->out_map_array = 0;
+ dma->in_map_num_entries = 0;
+ dma->out_map_num_entries = 0;
+
+ }
+
+ sep->nr_dcb_creat = 0;
+ sep->num_lli_tables_created = 0;
+
+ dev_dbg(&sep->pdev->dev,
+ "sep_free_dma_table_data_handler end\n");
+
+ return 0;
+}
+
+
+/**
+ * sep_request_daemon_mmap - maps the
+ * shared area to user space
+ * @filp: pointer to struct file
+ * @vma: pointer to vm_area_struct
+ */
+static int sep_request_daemon_mmap(struct file *filp,
+ struct vm_area_struct *vma)
+{
+ /* device */
+ struct sep_device *sep = filp->private_data;
+
+ dma_addr_t bus_address;
+
+ int error = 0;
+
+ dev_dbg(&sep->pdev->dev, "daemon mmap start\n");
+
+ if ((vma->vm_end - vma->vm_start) > SEP_DRIVER_MMMAP_AREA_SIZE) {
+ error = -EINVAL;
+ goto end_function;
+ }
+
+ /* get physical address */
+ bus_address = sep->shared_bus;
+
+ dev_dbg(&sep->pdev->dev,
+ "bus_address is %08lx\n",
+ (unsigned long)bus_address);
+
+ if (remap_pfn_range(vma, vma->vm_start, bus_address >> PAGE_SHIFT,
+ vma->vm_end - vma->vm_start, vma->vm_page_prot)) {
+
+ dev_warn(&sep->pdev->dev,
+ "remap_page_range failed\n");
+ error = -EAGAIN;
+ goto end_function;
+ }
+
+end_function:
+
+ dev_dbg(&sep->pdev->dev, "daemon mmap end\n");
+
+ return error;
+}
+
+/**
+ * sep_request_daemon_poll -
+ * @sep: struct sep_device * for current sep device
+ * @filp: struct file * for open file
+ * @wait: poll_table * for poll
+ */
+static unsigned int sep_request_daemon_poll(struct file *filp,
+ poll_table *wait)
+{
+ u32 mask = 0;
+
+ /* GPR2 register */
+ u32 retval2;
+
+ unsigned long lck_flags;
+
+ struct sep_device *sep = filp->private_data;
+
+ dev_dbg(&sep->pdev->dev,
+ "daemon poll: start\n");
+
+ dev_dbg(&sep->pdev->dev, "daemon poll: calling poll wait sep_event\n");
+
+ poll_wait(filp, &sep->event_request_daemon, wait);
+
+ dev_dbg(&sep->pdev->dev, "daemon poll: exit poll wait sep_event\n");
+
+ dev_dbg(&sep->pdev->dev,
+ "daemon poll: send_ct is %lx reply ct is %lx\n",
+ sep->send_ct, sep->reply_ct);
+
+ spin_lock_irqsave(&sep->snd_rply_lck, lck_flags);
+ /* check if the data is ready */
+ if (sep->send_ct == sep->reply_ct) {
+
+ spin_unlock_irqrestore(&sep->snd_rply_lck, lck_flags);
+
+ retval2 = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR2_REG_ADDR);
+
+ dev_dbg(&sep->pdev->dev,
+ "daemon poll: data check (GPR2) is %x\n", retval2);
+
+ /* check if PRINT request */
+ if ((retval2 >> 30) & 0x1) {
+
+ dev_dbg(&sep->pdev->dev,
+ "daemon poll: PRINTF request in\n");
+ mask |= POLLIN;
+ goto end_function;
+ }
+
+ /* check if NVS request */
+ if (retval2 >> 31) {
+
+ dev_dbg(&sep->pdev->dev,
+ "daemon poll: NVS request in\n");
+ mask |= POLLPRI | POLLWRNORM;
+ }
+ }
+
+ else {
+
+ spin_unlock_irqrestore(&sep->snd_rply_lck, lck_flags);
+
+ dev_dbg(&sep->pdev->dev,
+ "daemon poll: no reply received; returning 0\n");
+ mask = 0;
+ }
+
+end_function:
+
+ dev_dbg(&sep->pdev->dev,
+ "daemon poll: exit\n");
+ return mask;
+}
+
+/**
+ * sep_release - close a SEP device
+ * @inode: inode of SEP device
+ * @filp: file handle being closed
+ *
+ * Called on the final close of a SEP device.
+ */
+
+static int sep_release(struct inode *inode, struct file *filp)
+{
+ struct sep_device *sep = filp->private_data;
+
+ dev_dbg(&sep->pdev->dev, "Release for pid %d\n", current->pid);
+
+ mutex_lock(&sep->sep_mutex);
+ /* is this the process that has a transaction open?
+ * If so, lets reset pid_doing_transaction to 0 and
+ * clear the in use flags, and then wake up sep_event
+ * so that other processes can do transactions
+ */
+ dev_dbg(&sep->pdev->dev, "waking up event and mmap_event\n");
+ if (sep->pid_doing_transaction == current->pid) {
+ clear_bit(SEP_MMAP_LOCK_BIT, &sep->in_use_flags);
+ clear_bit(SEP_SEND_MSG_LOCK_BIT, &sep->in_use_flags);
+ sep_free_dma_table_data_handler(sep);
+ wake_up(&sep->event);
+ sep->pid_doing_transaction = 0;
+ }
+
+ mutex_unlock(&sep->sep_mutex);
+ return 0;
+}
+
+/**
+ * sep_mmap - maps the shared area to user space
+ * @filp: pointer to struct file
+ * @vma: pointer to vm_area_struct
+ */
+static int sep_mmap(struct file *filp, struct vm_area_struct *vma)
+{
+ dma_addr_t bus_addr;
+ struct sep_device *sep = filp->private_data;
+ unsigned long error = 0;
+
+ dev_dbg(&sep->pdev->dev, "mmap start\n");
+
+
+ dev_dbg(&sep->pdev->dev, "calling wait on event_mmap, tsetbit"
+ " SEP_MMAP_LOCK_BIT in_use_flags 0\n");
+ /* Set the transaction busy (own the device) */
+ wait_event_interruptible(sep->event,
+ test_and_set_bit(SEP_MMAP_LOCK_BIT,
+ &sep->in_use_flags) == 0);
+
+ if (signal_pending(current)) {
+ error = -EINTR;
+ goto end_function_with_error;
+ }
+ /*
+ * The pid_doing_transaction indicates that this process
+ * now owns the facilities to performa a transaction with
+ * the sep. While this process is performing a transaction,
+ * no other process who has the sep device open can perform
+ * any transactions. This method allows more than one process
+ * to have the device open at any given time, which provides
+ * finer granularity for device utilization by multiple
+ * processes.
+ */
+ mutex_lock(&sep->sep_mutex);
+ sep->pid_doing_transaction = current->pid;
+ mutex_unlock(&sep->sep_mutex);
+
+ /* zero the pools and the number of data pool alocation pointers */
+ sep->data_pool_bytes_allocated = 0;
+ sep->num_of_data_allocations = 0;
+
+ /*
+ * check that the size of the mapped range is as the size of the message
+ * shared area
+ */
+ if ((vma->vm_end - vma->vm_start) > SEP_DRIVER_MMMAP_AREA_SIZE) {
+ error = -EINVAL;
+ goto end_function_with_error;
+ }
+
+ dev_dbg(&sep->pdev->dev,
+ "shared_addr is %p\n", sep->shared_addr);
+
+ /* get bus address */
+ bus_addr = sep->shared_bus;
+
+ dev_dbg(&sep->pdev->dev,
+ "bus_address is %lx\n", (unsigned long)bus_addr);
+
+ if (remap_pfn_range(vma, vma->vm_start, bus_addr >> PAGE_SHIFT,
+ vma->vm_end - vma->vm_start, vma->vm_page_prot)) {
+ dev_warn(&sep->pdev->dev,
+ "remap_page_range failed\n");
+ error = -EAGAIN;
+ goto end_function_with_error;
+ }
+
+ dev_dbg(&sep->pdev->dev, "mmap end\n");
+ goto end_function;
+
+end_function_with_error:
+
+ /* clear the bit */
+ clear_bit(SEP_MMAP_LOCK_BIT, &sep->in_use_flags);
+ mutex_lock(&sep->sep_mutex);
+ sep->pid_doing_transaction = 0;
+ mutex_unlock(&sep->sep_mutex);
+
+ /* raise event for stuck contextes */
+
+ dev_warn(&sep->pdev->dev, "mmap error - waking up event\n");
+ wake_up(&sep->event);
+
+end_function:
+
+ return error;
+}
+
+/**
+ * sep_poll -
+ * @filp: pointer to struct file
+ * @wait: pointer to poll_table
+ */
+static unsigned int sep_poll(struct file *filp, poll_table *wait)
+{
+ u32 mask = 0;
+ u32 retval = 0;
+ u32 retval2 = 0;
+
+ unsigned long lck_flags;
+
+ struct sep_device *sep = filp->private_data;
+
+ dev_dbg(&sep->pdev->dev, "poll: start\n");
+
+ /* am I the process that own the transaction? */
+ mutex_lock(&sep->sep_mutex);
+ if (current->pid != sep->pid_doing_transaction) {
+ dev_warn(&sep->pdev->dev, "poll; wrong pid\n");
+ mask = POLLERR;
+ mutex_unlock(&sep->sep_mutex);
+ goto end_function;
+ }
+
+ mutex_unlock(&sep->sep_mutex);
+
+ /* check if send command or send_reply were activated previously */
+ if (!test_bit(SEP_SEND_MSG_LOCK_BIT, &sep->in_use_flags)) {
+ dev_warn(&sep->pdev->dev, "poll; lock bit set\n");
+ mask = POLLERR;
+ goto end_function;
+ }
+
+ /* add the event to the polling wait table */
+ dev_dbg(&sep->pdev->dev, "poll: calling wait sep_event\n");
+
+ poll_wait(filp, &sep->event, wait);
+
+ dev_dbg(&sep->pdev->dev, "poll: exit wait sep_event\n");
+
+ dev_dbg(&sep->pdev->dev, "poll: send_ct is %lx reply ct is %lx\n",
+ sep->send_ct, sep->reply_ct);
+
+ /* check if error occured during poll */
+ retval2 = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR3_REG_ADDR);
+
+ if (retval2 != 0x0) {
+
+ dev_warn(&sep->pdev->dev, "poll; poll error %x\n",
+ retval2);
+ mask |= POLLERR;
+ goto end_function;
+ }
+
+ spin_lock_irqsave(&sep->snd_rply_lck, lck_flags);
+
+ if (sep->send_ct == sep->reply_ct) {
+
+ spin_unlock_irqrestore(&sep->snd_rply_lck, lck_flags);
+ retval = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR2_REG_ADDR);
+ dev_dbg(&sep->pdev->dev, "poll: data ready check (GPR2) %x\n",
+ retval);
+
+ /* check if printf request */
+ if ((retval >> 30) & 0x1) {
+
+ dev_dbg(&sep->pdev->dev, "poll: sep printf request\n");
+ wake_up(&sep->event_request_daemon);
+ goto end_function;
+
+ }
+
+ /* check if the this is sep reply or request */
+ if (retval >> 31) {
+
+ dev_dbg(&sep->pdev->dev, "poll: sep request\n");
+ wake_up(&sep->event_request_daemon);
+
+ } else {
+
+ dev_dbg(&sep->pdev->dev, "poll: normal return\n");
+
+ /* in case it is again by send_reply_comand */
+
+ clear_bit(SEP_SEND_MSG_LOCK_BIT, &sep->in_use_flags);
+
+ sep_dump_message(sep);
+
+ dev_dbg(&sep->pdev->dev,
+ "poll; sep reply POLLIN | POLLRDNORM\n");
+
+ mask |= POLLIN | POLLRDNORM;
+ }
+
+ } else {
+
+ spin_unlock_irqrestore(&sep->snd_rply_lck, lck_flags);
+
+ dev_dbg(&sep->pdev->dev,
+ "poll; no reply received; returning mask of 0\n");
+ mask = 0;
+ }
+
+end_function:
+
+ dev_dbg(&sep->pdev->dev, "poll: end\n");
+ return mask;
+}
+
+/**
+ * sep_time_address - address in SEP memory of time
+ * @sep: SEP device we want the address from
+ *
+ * Return the address of the two dwords in memory used for time
+ * setting.
+ */
+
+static u32 *sep_time_address(struct sep_device *sep)
+{
+ return sep->shared_addr + SEP_DRIVER_SYSTEM_TIME_MEMORY_OFFSET_IN_BYTES;
+}
+
+/**
+ * sep_set_time - set the SEP time
+ * @sep: the SEP we are setting the time for
+ *
+ * Calculates time and sets it at the predefined address.
+ * Called with the sep mutex held.
+ */
+static unsigned long sep_set_time(struct sep_device *sep)
+{
+ struct timeval time;
+ u32 *time_addr; /* address of time as seen by the kernel */
+
+
+ dev_dbg(&sep->pdev->dev,
+ "sep:sep_set_time start\n");
+
+ do_gettimeofday(&time);
+
+ /* set value in the SYSTEM MEMORY offset */
+ time_addr = sep_time_address(sep);
+
+ time_addr[0] = SEP_TIME_VAL_TOKEN;
+ time_addr[1] = time.tv_sec;
+
+ dev_dbg(&sep->pdev->dev,
+ "time.tv_sec is %lu\n", time.tv_sec);
+ dev_dbg(&sep->pdev->dev,
+ "time_addr is %p\n", time_addr);
+ dev_dbg(&sep->pdev->dev,
+ "sep->shared_addr is %p\n", sep->shared_addr);
+
+ return time.tv_sec;
+}
+
+/**
+ * sep_init_caller_id - initializes the caller id functionality
+ * @sep: pointer to struct sep_device
+ */
+static int sep_init_caller_id(struct sep_device *sep)
+{
+ /* return value */
+ int ret_val;
+
+ /* counter */
+ int counter;
+
+ struct cb_id caller_id;
+
+ dev_dbg(&sep->pdev->dev,
+ "sep_init_caller_id start\n");
+
+ ret_val = 0;
+
+ /* init cb_id struct */
+ caller_id.idx = CN_IDX_PROC;
+ caller_id.val = CN_VAL_PROC;
+
+ /**
+ * init caller id table
+ * note that locking is not needed here as this function is
+ * called prior to registering the device file
+ */
+ for (counter = 0; counter < SEP_CALLER_ID_TABLE_NUM_ENTRIES; counter++)
+ sep->caller_id_table[counter].pid = 0;
+
+
+ /* init access flag */
+ sep->singleton_access_flag = 0;
+
+ dev_dbg(&sep->pdev->dev,
+ "caller id table init finished\n");
+
+ /* register to netlink connector */
+
+ if (ret_val)
+ dev_warn(&sep->pdev->dev,
+ "cn_add_callback failed %x\n", ret_val);
+
+ dev_dbg(&sep->pdev->dev,
+ "sep_init_caller_id end\n");
+
+ return ret_val;
+}
+
+/**
+ * sep_set_caller_id_handler - inserts the data into the caller id table
+ * note that this function does fall under the ioctl lock
+ * @sep: sep device
+ * @arg: pointer to struct caller_id_struct
+ */
+static int sep_set_caller_id_handler(struct sep_device *sep, u32 arg)
+{
+ void __user *hash;
+ int error;
+ int i;
+ struct caller_id_struct command_args;
+
+ dev_dbg(&sep->pdev->dev,
+ "sep_set_caller_id_handler start\n");
+
+ error = 0;
+
+ for (i = 0; i < SEP_CALLER_ID_TABLE_NUM_ENTRIES; i++) {
+ if (sep->caller_id_table[i].pid == 0)
+ break;
+ }
+
+ if (i == SEP_CALLER_ID_TABLE_NUM_ENTRIES) {
+ dev_warn(&sep->pdev->dev,
+ "no more caller id entries left\n");
+ dev_warn(&sep->pdev->dev,
+ "maximum number is %d\n",
+ SEP_CALLER_ID_TABLE_NUM_ENTRIES);
+
+ error = -EUSERS;
+ goto end_function;
+ }
+
+ /* copy the data */
+ if (copy_from_user(&command_args, (void __user *)arg,
+ sizeof(command_args))) {
+ error = -EFAULT;
+ goto end_function;
+ }
+
+ hash = (void __user *)(unsigned long)command_args.callerIdAddress;
+
+ if (!command_args.pid || !command_args.callerIdSizeInBytes) {
+ error = -EINVAL;
+ goto end_function;
+ }
+
+ dev_dbg(&sep->pdev->dev, "pid is %x\n", command_args.pid);
+ dev_dbg(&sep->pdev->dev, "callerIdSizeInBytes is %x\n",
+ command_args.callerIdSizeInBytes);
+
+ if (command_args.callerIdSizeInBytes >
+ SEP_CALLER_ID_HASH_SIZE_IN_BYTES) {
+ error = -EMSGSIZE;
+ goto end_function;
+ }
+
+ sep->caller_id_table[i].pid = command_args.pid;
+
+ if (copy_from_user(sep->caller_id_table[i].callerIdHash,
+ hash, command_args.callerIdSizeInBytes))
+ error = -EFAULT;
+end_function:
+ dev_dbg(&sep->pdev->dev,
+ "sep_set_caller_id_handler end\n");
+ return error;
+}
+
+/**
+ * sep_set_current_caller_id - set the caller id (if exists) to the sep
+ * note that this function does fall under the ioctl lock
+ * @sep: pointer to struct_sep
+ */
+static int sep_set_current_caller_id(struct sep_device *sep)
+{
+ int i;
+
+ dev_dbg(&sep->pdev->dev, "sep_set_current_caller_id start\n");
+
+ dev_dbg(&sep->pdev->dev, "current process is %d\n", current->pid);
+
+ /* zero the previous value */
+ memset((void *)(sep->shared_addr +
+ (SEP_CALLER_ID_OFFSET_BYTES)),
+ 0,
+ SEP_CALLER_ID_HASH_SIZE_IN_BYTES);
+
+ for (i = 0; i < SEP_CALLER_ID_TABLE_NUM_ENTRIES; i++) {
+ if (sep->caller_id_table[i].pid == current->pid) {
+ dev_dbg(&sep->pdev->dev, "Caller Id found\n");
+
+ memcpy((void *)(sep->shared_addr +
+ (SEP_CALLER_ID_OFFSET_BYTES)),
+ (void *)(sep->caller_id_table[i].callerIdHash),
+ SEP_CALLER_ID_HASH_SIZE_IN_BYTES);
+ break;
+ }
+ }
+
+ dev_dbg(&sep->pdev->dev, "sep_set_current_caller_id end\n");
+
+ return 0;
+}
+
+/**
+ * sep_send_command_handler - kick off a command
+ * note that this function does fall under the ioctl lock
+ * This function raises interrupt to SEP that signals that is has a new
+ * command from the host
+ * @sep: sep being signalled
+ */
+
+static int sep_send_command_handler(struct sep_device *sep)
+{
+ unsigned long lck_flags;
+ int error = 0;
+
+ dev_dbg(&sep->pdev->dev, "sep_send_command_handler start\n");
+
+ dev_dbg(&sep->pdev->dev, "calling test and set for "
+ " in_use_flags SEP_SEND_MSG_LOCK_BIT 0\n");
+ if (test_and_set_bit(SEP_SEND_MSG_LOCK_BIT, &sep->in_use_flags)) {
+ error = -EPROTO;
+ goto end_function;
+ }
+
+ sep_set_time(sep);
+
+ /* only Medfield has caller id */
+ if (sep->mrst == 0)
+ sep_set_current_caller_id(sep);
+
+ sep_dump_message(sep);
+
+ /* update counter */
+ spin_lock_irqsave(&sep->snd_rply_lck, lck_flags);
+ sep->send_ct++;
+ spin_unlock_irqrestore(&sep->snd_rply_lck, lck_flags);
+
+ dev_dbg(&sep->pdev->dev, "sep_send_command_handler"
+ "send_ct %lx reply_ct %lx\n", sep->send_ct, sep->reply_ct);
+
+ /* send interrupt to SEP */
+ sep_write_reg(sep, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x2);
+
+end_function:
+ dev_dbg(&sep->pdev->dev, "sep_send_command_handler end\n");
+ return error;
+}
+
+/**
+ * sep_allocate_data_pool_memory_handler -
+ * This function handles the allocate data pool memory request
+ * This function returns calculates the bus address of the
+ * allocated memory, and the offset of this area from the mapped address.
+ * Therefore, the FVOs in user space can calculate the exact virtual
+ * address of this allocated memory
+ * @sep: pointer to struct_sep
+ * @arg: pointer to struct alloc_struct
+ */
+static int sep_allocate_data_pool_memory_handler(struct sep_device *sep,
+ unsigned long arg)
+{
+ int error = 0;
+ struct alloc_struct command_args;
+
+ /* holds the allocated buffer address in the system memory pool */
+ u32 *token_addr;
+
+ dev_dbg(&sep->pdev->dev,
+ "sep_allocate_data_pool_memory_handler start\n");
+
+ if (copy_from_user(&command_args, (void __user *)arg,
+ sizeof(struct alloc_struct))) {
+ error = -EFAULT;
+ goto end_function;
+ }
+
+ /* allocate memory */
+ if ((sep->data_pool_bytes_allocated + command_args.num_bytes) >
+ SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES) {
+ error = -ENOMEM;
+ goto end_function;
+ }
+
+ dev_dbg(&sep->pdev->dev,
+ "bytes_allocated: %x\n", (int)sep->data_pool_bytes_allocated);
+ dev_dbg(&sep->pdev->dev,
+ "offset: %x\n", SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES);
+ /* set the virtual and bus address */
+ command_args.offset = SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES +
+ sep->data_pool_bytes_allocated;
+
+ dev_dbg(&sep->pdev->dev,
+ "command_args.offset: %x\n", command_args.offset);
+
+ /* place in the shared area that is known by the sep */
+ token_addr = (u32 *)(sep->shared_addr +
+ SEP_DRIVER_DATA_POOL_ALLOCATION_OFFSET_IN_BYTES +
+ (sep->num_of_data_allocations)*2*sizeof(u32));
+
+ dev_dbg(&sep->pdev->dev,
+ "allocation offset: %x\n",
+ SEP_DRIVER_DATA_POOL_ALLOCATION_OFFSET_IN_BYTES);
+ dev_dbg(&sep->pdev->dev, "data pool token addr is %p\n", token_addr);
+
+ token_addr[0] = SEP_DATA_POOL_POINTERS_VAL_TOKEN;
+ token_addr[1] = (u32)sep->shared_bus +
+ SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES +
+ sep->data_pool_bytes_allocated;
+
+ dev_dbg(&sep->pdev->dev, "data pool token [0] %x\n", token_addr[0]);
+ dev_dbg(&sep->pdev->dev, "data pool token [1] %x\n", token_addr[1]);
+
+ /* write the memory back to the user space */
+ error = copy_to_user((void *)arg, (void *)&command_args,
+ sizeof(struct alloc_struct));
+ if (error) {
+
+ dev_warn(&sep->pdev->dev,
+ "allocate data pool copy to user error\n");
+ goto end_function;
+ }
+
+ /* update the allocation */
+ sep->data_pool_bytes_allocated += command_args.num_bytes;
+ sep->num_of_data_allocations += 1;
+
+ dev_dbg(&sep->pdev->dev, "data_allocations %d\n",
+ sep->num_of_data_allocations);
+ dev_dbg(&sep->pdev->dev, "bytes allocated %d\n",
+ (int)sep->data_pool_bytes_allocated);
+
+end_function:
+
+ dev_dbg(&sep->pdev->dev,
+ "sep_allocate_data_pool_memory_handler end\n");
+ return error;
+}
+
+/**
+ * sep_lock_kernel_pages -
+ * This function locks all the physical pages of the kernel virtual buffer
+ * and construct a basic lli array, where each entry holds the physical
+ * page address and the size that application data holds in this page
+ * This function is used only during kernel crypto mod calls from within
+ * the kernel (when ioctl is not used)
+ * @sep: pointer to struct sep_device
+ * @kernel_virt_addr: address of data buffer in kernel
+ * @data_size: size of data
+ * @lli_array_ptr: lli array
+ * @in_out_flag: input into device or output from device
+ */
+static int sep_lock_kernel_pages(struct sep_device *sep,
+ u32 kernel_virt_addr,
+ u32 data_size,
+ struct sep_lli_entry **lli_array_ptr,
+ int in_out_flag)
+
+{
+ /* error */
+ int error = 0;
+
+ /* array of lli */
+ struct sep_lli_entry *lli_array;
+
+ /* map array */
+ struct sep_dma_map *map_array;
+
+ dev_dbg(&sep->pdev->dev,
+ "sep_lock_kernel_pages start\n");
+
+ dev_dbg(&sep->pdev->dev,
+ "kernel_virt_addr is %08x\n", kernel_virt_addr);
+ dev_dbg(&sep->pdev->dev,
+ "data_size is %x\n", data_size);
+
+ lli_array = kmalloc(sizeof(struct sep_lli_entry), GFP_ATOMIC);
+ if (!lli_array) {
+
+ error = -ENOMEM;
+ goto end_function;
+ }
+
+ map_array = kmalloc(sizeof(struct sep_dma_map), GFP_ATOMIC);
+ if (!map_array) {
+ error = -ENOMEM;
+ goto end_function_with_error;
+ }
+
+ map_array[0].dma_addr =
+ dma_map_single(&sep->pdev->dev, (void *)kernel_virt_addr,
+ data_size, DMA_BIDIRECTIONAL);
+ map_array[0].size = data_size;
+
+
+ /*
+ * set the start address of the first page - app data may start not at
+ * the beginning of the page
+ */
+ lli_array[0].bus_address = (u32)map_array[0].dma_addr;
+ lli_array[0].block_size = map_array[0].size;
+
+ dev_dbg(&sep->pdev->dev,
+ "lli_array[0].bus_address is %08lx,"
+ " lli_array[0].block_size is %x\n",
+ (unsigned long)lli_array[0].bus_address,
+ lli_array[0].block_size);
+
+ /* set the output parameters */
+ if (in_out_flag == SEP_DRIVER_IN_FLAG) {
+ *lli_array_ptr = lli_array;
+ sep->dma_res_arr[sep->nr_dcb_creat].in_num_pages = 1;
+ sep->dma_res_arr[sep->nr_dcb_creat].in_page_array = 0;
+ sep->dma_res_arr[sep->nr_dcb_creat].in_map_array = map_array;
+ sep->dma_res_arr[sep->nr_dcb_creat].in_map_num_entries = 1;
+ } else {
+ *lli_array_ptr = lli_array;
+ sep->dma_res_arr[sep->nr_dcb_creat].out_num_pages = 1;
+ sep->dma_res_arr[sep->nr_dcb_creat].out_page_array = 0;
+ sep->dma_res_arr[sep->nr_dcb_creat].out_map_array = map_array;
+ sep->dma_res_arr[sep->nr_dcb_creat].out_map_num_entries = 1;
+ }
+
+ goto end_function;
+
+end_function_with_error:
+
+ kfree(lli_array);
+
+end_function:
+
+ dev_dbg(&sep->pdev->dev,
+ "sep_lock_kernel_pages end\n");
+
+ return error;
+}
+
+/**
+ * sep_lock_user_pages -
+ * This function locks all the physical pages of the application
+ * virtual buffer and construct a basic lli array, where each entry
+ * holds the physical page address and the size that application
+ * data holds in this physical pages
+ * @sep: pointer to struct sep_device
+ * @app_virt_addr: user memory data buffer
+ * @data_size: size of data buffer
+ * @lli_array_ptr: lli array
+ * @in_out_flag: input or output to device
+ */
+static int sep_lock_user_pages(struct sep_device *sep,
+ u32 app_virt_addr,
+ u32 data_size,
+ struct sep_lli_entry **lli_array_ptr,
+ int in_out_flag)
+
+{
+ /* error */
+ int error;
+
+ /* the the page of the end address of the user space buffer */
+ u32 end_page;
+
+ /* the page of the start address of the user space buffer */
+ u32 start_page;
+
+ /* the range in pages */
+ u32 num_pages;
+
+ /* array of pointers ot page */
+ struct page **page_array;
+
+ /* array of lli */
+ struct sep_lli_entry *lli_array;
+
+ /* map array */
+ struct sep_dma_map *map_array;
+
+ /* direction of the DMA mapping for locked pages */
+ enum dma_data_direction dir;
+
+ /* count */
+ u32 count;
+
+ /* result */
+ int result;
+
+ dev_dbg(&sep->pdev->dev,
+ "sep_lock_user_pages start\n");
+
+ error = 0;
+
+ /* set start and end pages and num pages */
+ end_page = (app_virt_addr + data_size - 1) >> PAGE_SHIFT;
+ start_page = app_virt_addr >> PAGE_SHIFT;
+ num_pages = end_page - start_page + 1;
+
+ dev_dbg(&sep->pdev->dev,
+ "app_virt_addr is %x\n", app_virt_addr);
+ dev_dbg(&sep->pdev->dev,
+ "data_size is %x\n", data_size);
+ dev_dbg(&sep->pdev->dev,
+ "start_page is %x\n", start_page);
+ dev_dbg(&sep->pdev->dev,
+ "end_page is %x\n", end_page);
+ dev_dbg(&sep->pdev->dev,
+ "num_pages is %x\n", num_pages);
+
+ dev_dbg(&sep->pdev->dev,
+ "starting page_array malloc\n");
+
+ /* allocate array of pages structure pointers */
+ page_array = kmalloc(sizeof(struct page *) * num_pages, GFP_ATOMIC);
+ if (!page_array) {
+ error = -ENOMEM;
+ goto end_function;
+ }
+
+ map_array = kmalloc(sizeof(struct sep_dma_map) * num_pages, GFP_ATOMIC);
+ if (!map_array) {
+ dev_warn(&sep->pdev->dev,
+ "kmalloc for map_array failed\n");
+ error = -ENOMEM;
+ goto end_function_with_error1;
+ }
+
+ lli_array = kmalloc(sizeof(struct sep_lli_entry) * num_pages,
+ GFP_ATOMIC);
+
+ if (!lli_array) {
+
+ dev_warn(&sep->pdev->dev,
+ "kmalloc for lli_array failed\n");
+ error = -ENOMEM;
+ goto end_function_with_error2;
+ }
+
+ dev_dbg(&sep->pdev->dev,
+ "starting get_user_pages\n");
+
+ /* convert the application virtual address into a set of physical */
+ down_read(&current->mm->mmap_sem);
+ result = get_user_pages(current, current->mm, app_virt_addr,
+ num_pages,
+ ((in_out_flag == SEP_DRIVER_IN_FLAG) ? 0 : 1),
+ 0, page_array, 0);
+
+ up_read(&current->mm->mmap_sem);
+
+ /* check the number of pages locked - if not all then exit with error */
+ if (result != num_pages) {
+
+ dev_warn(&sep->pdev->dev,
+ "not all pages locked by get_user_pages\n");
+ error = -ENOMEM;
+ goto end_function_with_error3;
+ }
+
+ dev_dbg(&sep->pdev->dev,
+ "get_user_pages succeeded\n");
+
+ /* set direction */
+ if (in_out_flag == SEP_DRIVER_IN_FLAG)
+ dir = DMA_TO_DEVICE;
+ else
+ dir = DMA_FROM_DEVICE;
+
+ /*
+ * fill the array using page array data and
+ * map the pages - this action
+ * will also flush the cache as needed
+ */
+ for (count = 0; count < num_pages; count++) {
+ /* fill the map array */
+ map_array[count].dma_addr =
+ dma_map_page(&sep->pdev->dev, page_array[count],
+ 0, PAGE_SIZE, /*dir*/DMA_BIDIRECTIONAL);
+
+ map_array[count].size = PAGE_SIZE;
+
+ /* fill the lli array entry */
+ lli_array[count].bus_address = (u32)map_array[count].dma_addr;
+ lli_array[count].block_size = PAGE_SIZE;
+
+ dev_warn(&sep->pdev->dev,
+ "lli_array[%x].bus_address is %08lx, \
+ lli_array[%x].block_size is %x\n",
+ count, (unsigned long)lli_array[count].bus_address,
+ count, lli_array[count].block_size);
+ }
+
+ /* check the offset for the first page */
+ lli_array[0].bus_address =
+ lli_array[0].bus_address + (app_virt_addr & (~PAGE_MASK));
+
+ /* check that not all the data is in the first page only */
+ if ((PAGE_SIZE - (app_virt_addr & (~PAGE_MASK))) >= data_size)
+ lli_array[0].block_size = data_size;
+ else
+ lli_array[0].block_size =
+ PAGE_SIZE - (app_virt_addr & (~PAGE_MASK));
+
+ dev_dbg(&sep->pdev->dev,
+ "lli_array[0].bus_address is %08lx, \
+ lli_array[0].block_size is %x\n",
+ (unsigned long)lli_array[count].bus_address,
+ lli_array[count].block_size);
+
+ /* check the size of the last page */
+ if (num_pages > 1) {
+
+ lli_array[num_pages - 1].block_size =
+ (app_virt_addr + data_size) & (~PAGE_MASK);
+
+ dev_warn(&sep->pdev->dev,
+ "lli_array[%x].bus_address is %08lx, \
+ lli_array[%x].block_size is %x\n",
+ num_pages - 1,
+ (unsigned long)lli_array[count].bus_address,
+ num_pages - 1,
+ lli_array[count].block_size);
+ }
+
+ /* set output params acording to the in_out flag */
+ if (in_out_flag == SEP_DRIVER_IN_FLAG) {
+ *lli_array_ptr = lli_array;
+ sep->dma_res_arr[sep->nr_dcb_creat].in_num_pages =
+ num_pages;
+ sep->dma_res_arr[sep->nr_dcb_creat].in_page_array =
+ page_array;
+ sep->dma_res_arr[sep->nr_dcb_creat].in_map_array =
+ map_array;
+ sep->dma_res_arr[sep->nr_dcb_creat].in_map_num_entries =
+ num_pages;
+ } else {
+ *lli_array_ptr = lli_array;
+ sep->dma_res_arr[sep->nr_dcb_creat].out_num_pages =
+ num_pages;
+ sep->dma_res_arr[sep->nr_dcb_creat].out_page_array =
+ page_array;
+ sep->dma_res_arr[sep->nr_dcb_creat].out_map_array =
+ map_array;
+ sep->dma_res_arr[sep->nr_dcb_creat].out_map_num_entries =
+ num_pages;
+ }
+
+ goto end_function;
+
+end_function_with_error3:
+
+ /* free lli array */
+ kfree(lli_array);
+
+end_function_with_error2:
+
+ kfree(map_array);
+
+end_function_with_error1:
+
+ /* free page array */
+ kfree(page_array);
+
+end_function:
+
+ dev_dbg(&sep->pdev->dev,
+ "sep_lock_user_pages end\n");
+
+ return error;
+}
+
+/**
+ * u32 sep_calculate_lli_table_max_size -
+ * this function calculates the size of data
+ * that can be inserted into the lli
+ * table from this array the condition is that
+ * either the table is full
+ * (all etnries are entered), or there are no more
+ * entries in the lli array
+ * @sep: pointer to struct sep_device
+ * @lli_in_array_ptr
+ * @num_array_entries
+ * @last_table_flag
+ */
+static u32 sep_calculate_lli_table_max_size(struct sep_device *sep,
+ struct sep_lli_entry *lli_in_array_ptr,
+ u32 num_array_entries,
+ u32 *last_table_flag)
+{
+ /* table data size */
+ u32 table_data_size;
+
+ /* data size for the next table */
+ u32 next_table_data_size;
+
+ /* counter */
+ u32 counter;
+
+ table_data_size = 0;
+ *last_table_flag = 0;
+
+ /*
+ * calculate the data in the out lli table till we fill the whole
+ * table or till the data has ended
+ */
+ for (counter = 0;
+ (counter < (SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP - 1)) &&
+ (counter < num_array_entries); counter++)
+ table_data_size += lli_in_array_ptr[counter].block_size;
+
+ /*
+ * check if we reached the last entry,
+ * meaning this ia the last table to build,
+ * and no need to check the block alignment
+ */
+ if (counter == num_array_entries) {
+
+ /* set the last table flag */
+ *last_table_flag = 1;
+ goto end_function;
+ }
+
+ /*
+ * calculate the data size of the next table.
+ * Stop if no entries left or
+ * if data size is more the DMA restriction
+ */
+ next_table_data_size = 0;
+ for (; counter < num_array_entries; counter++) {
+
+ next_table_data_size += lli_in_array_ptr[counter].block_size;
+
+ if (next_table_data_size >= SEP_DRIVER_MIN_DATA_SIZE_PER_TABLE)
+
+ break;
+ }
+
+ /*
+ * check if the next table data size is less then DMA rstriction.
+ * if it is - recalculate the current table size, so that the next
+ * table data size will be adaquete for DMA
+ */
+ if (next_table_data_size &&
+ next_table_data_size < SEP_DRIVER_MIN_DATA_SIZE_PER_TABLE)
+
+ table_data_size -= (SEP_DRIVER_MIN_DATA_SIZE_PER_TABLE -
+ next_table_data_size);
+
+ dev_dbg(&sep->pdev->dev,
+ "table data size is %x\n", table_data_size);
+
+end_function:
+
+ return table_data_size;
+}
+
+/**
+ * sep_build_lli_table -
+ * this functions builds ont lli table from the lli_array according to
+ * the given size of data
+ * @sep: pointer to struct sep_device
+ * @lli_array_ptr: pointer to lli array
+ * @lli_table_ptr: pointer to lli table
+ * @num_processed_entries_ptr: pointer to number of entries
+ * @num_table_entries_ptr: pointer to number of tables
+ * @table_data_size: total data size
+ */
+static void sep_build_lli_table(struct sep_device *sep,
+ struct sep_lli_entry *lli_array_ptr,
+ struct sep_lli_entry *lli_table_ptr,
+ u32 *num_processed_entries_ptr,
+ u32 *num_table_entries_ptr,
+ u32 table_data_size)
+{
+ /* current table data size */
+ u32 curr_table_data_size;
+
+ /* counter of lli array entry */
+ u32 array_counter;
+
+ dev_dbg(&sep->pdev->dev,
+ "sep_build_lli_table start\n");
+
+ /* init currrent table data size and lli array entry counter */
+ curr_table_data_size = 0;
+ array_counter = 0;
+ *num_table_entries_ptr = 1;
+
+ dev_dbg(&sep->pdev->dev,
+ "table_data_size is %x\n", table_data_size);
+
+ /* fill the table till table size reaches the needed amount */
+ while (curr_table_data_size < table_data_size) {
+ /* update the number of entries in table */
+ (*num_table_entries_ptr)++;
+
+ lli_table_ptr->bus_address =
+ cpu_to_le32(lli_array_ptr[array_counter].bus_address);
+
+ lli_table_ptr->block_size =
+ cpu_to_le32(lli_array_ptr[array_counter].block_size);
+
+ curr_table_data_size += lli_array_ptr[array_counter].block_size;
+
+ dev_dbg(&sep->pdev->dev,
+ "lli_table_ptr is %p\n", lli_table_ptr);
+ dev_dbg(&sep->pdev->dev,
+ "lli_table_ptr->bus_address is %08lx\n",
+ (unsigned long)lli_table_ptr->bus_address);
+ dev_dbg(&sep->pdev->dev,
+ "lli_table_ptr->block_size is %x\n",
+ lli_table_ptr->block_size);
+
+ /* check for overflow of the table data */
+ if (curr_table_data_size > table_data_size) {
+
+ dev_dbg(&sep->pdev->dev,
+ "curr_table_data_size too large\n");
+
+ /* update the size of block in the table */
+ lli_table_ptr->block_size -=
+ cpu_to_le32((curr_table_data_size - table_data_size));
+
+ /* update the physical address in the lli array */
+ lli_array_ptr[array_counter].bus_address +=
+ cpu_to_le32(lli_table_ptr->block_size);
+
+ /* update the block size left in the lli array */
+ lli_array_ptr[array_counter].block_size =
+ (curr_table_data_size - table_data_size);
+
+ } else
+
+ /* advance to the next entry in the lli_array */
+ array_counter++;
+
+ dev_dbg(&sep->pdev->dev,
+ "lli_table_ptr->bus_address is %08lx\n",
+ (unsigned long)lli_table_ptr->bus_address);
+ dev_dbg(&sep->pdev->dev,
+ "lli_table_ptr->block_size is %x\n",
+ lli_table_ptr->block_size);
+
+ /* move to the next entry in table */
+ lli_table_ptr++;
+ }
+
+ /* set the info entry to default */
+ lli_table_ptr->bus_address = 0xffffffff;
+ lli_table_ptr->block_size = 0;
+
+ dev_dbg(&sep->pdev->dev,
+ "lli_table_ptr is %p\n", lli_table_ptr);
+ dev_dbg(&sep->pdev->dev,
+ "lli_table_ptr->bus_address is %08lx\n",
+ (unsigned long)lli_table_ptr->bus_address);
+ dev_dbg(&sep->pdev->dev,
+ "lli_table_ptr->block_size is %x\n",
+ lli_table_ptr->block_size);
+
+ /* set the output parameter */
+ *num_processed_entries_ptr += array_counter;
+
+ dev_dbg(&sep->pdev->dev,
+ "num_processed_entries_ptr is %x\n",
+ *num_processed_entries_ptr);
+
+ dev_dbg(&sep->pdev->dev,
+ "sep_build_lli_table end\n");
+
+ return;
+}
+
+/**
+ * sep_shared_area_virt_to_bus -
+ * This functions returns the physical address inside shared area according
+ * to the virtual address. It can be either on the externa RAM device
+ * (ioremapped), or on the system RAM
+ * This implementation is for the external RAM
+ * @sep: pointer to struct sep_device
+ * @virt_address: virtual address to convert
+ */
+static dma_addr_t sep_shared_area_virt_to_bus(struct sep_device *sep,
+ void *virt_address)
+{
+ dev_dbg(&sep->pdev->dev,
+ "sh virt to phys v %08lx\n",
+ (unsigned long)virt_address);
+ dev_dbg(&sep->pdev->dev,
+ "sh virt to phys p %08lx\n",
+ (unsigned long)(sep->shared_bus
+ + (virt_address - sep->shared_addr)));
+
+ return sep->shared_bus
+ + (size_t)(virt_address - sep->shared_addr);
+}
+
+/**
+ * sep_shared_area_bus_to_virt -
+ * This functions returns the virtual address inside shared area
+ * according to the physical address. It can be either on the
+ * externa RAM device (ioremapped), or on the system RAM
+ * This implementation is for the external RAM
+ * @sep: pointer to struct sep_device
+ * @bus_address: bus address to convert
+ */
+
+static void *sep_shared_area_bus_to_virt(struct sep_device *sep,
+ dma_addr_t bus_address)
+{
+ dev_dbg(&sep->pdev->dev,
+ "shared bus to virt b=%x v=%x\n",
+ (u32)bus_address,
+ (u32)(sep->shared_addr +
+ (size_t)(bus_address - sep->shared_bus)));
+
+ return sep->shared_addr
+ + (size_t)(bus_address - sep->shared_bus);
+}
+
+/**
+ * sep_debug_print_lli_tables -
+ * this function goes over the list of the print created tables and
+ * prints all the data
+ * @sep: pointer to struct sep_device
+ * @lli_table_ptr: pointer to sep_lli_entry
+ * @num_table_entries: number of entries
+ * @table_data_size: total data size
+ */
+static void sep_debug_print_lli_tables(struct sep_device *sep,
+ struct sep_lli_entry *lli_table_ptr,
+ unsigned long num_table_entries,
+ unsigned long table_data_size)
+{
+ unsigned long table_count = 0;
+ unsigned long entries_count = 0;
+
+ dev_dbg(&sep->pdev->dev,
+ "sep_debug_print_lli_tables start\n");
+
+ table_count = 1;
+ while ((unsigned long) lli_table_ptr != 0xffffffff) {
+ dev_dbg(&sep->pdev->dev,
+ "lli table %08lx, table_data_size is %lu\n",
+ table_count, table_data_size);
+ dev_dbg(&sep->pdev->dev,
+ "num_table_entries is %lu\n",
+ num_table_entries);
+
+ /* print entries of the table (without info entry) */
+ for (entries_count = 0; entries_count < num_table_entries;
+ entries_count++, lli_table_ptr++) {
+
+ dev_dbg(&sep->pdev->dev,
+ "lli_table_ptr address is %08lx\n",
+ (unsigned long) lli_table_ptr);
+
+ dev_dbg(&sep->pdev->dev,
+ "phys address is %08lx block size is %x\n",
+ (unsigned long)lli_table_ptr->bus_address,
+ lli_table_ptr->block_size);
+ }
+
+ /* point to the info entry */
+ lli_table_ptr--;
+
+ dev_dbg(&sep->pdev->dev,
+ "phys lli_table_ptr->block_size is %x\n",
+ lli_table_ptr->block_size);
+
+ dev_dbg(&sep->pdev->dev,
+ "phys lli_table_ptr->physical_address is %08lu\n",
+ (unsigned long)lli_table_ptr->bus_address);
+
+
+ table_data_size = lli_table_ptr->block_size & 0xffffff;
+ num_table_entries = (lli_table_ptr->block_size >> 24) & 0xff;
+ lli_table_ptr = (struct sep_lli_entry *)
+ (lli_table_ptr->bus_address);
+
+ dev_dbg(&sep->pdev->dev,
+ "phys table_data_size is %lu num_table_entries is"
+ " %lu lli_table_ptr is%lu\n", table_data_size,
+ num_table_entries, (unsigned long)lli_table_ptr);
+
+ if ((unsigned long)lli_table_ptr != 0xffffffff)
+ lli_table_ptr = (struct sep_lli_entry *)
+ sep_shared_bus_to_virt(sep,
+ (unsigned long)lli_table_ptr);
+
+ table_count++;
+ }
+ dev_dbg(&sep->pdev->dev,
+ "sep_debug_print_lli_tables end\n");
+}
+
+
+/**
+ * sep_prepare_empty_lli_table -
+ * This function creates empty lli tables when there is no data
+ * @sep: pointer to struct sep_device
+ * @lli_table_addr_ptr: pointer to lli table
+ * @num_entries_ptr: pointer to number of entries
+ * @table_data_size_ptr: point to table data size
+ */
+static void sep_prepare_empty_lli_table(struct sep_device *sep,
+ dma_addr_t *lli_table_addr_ptr,
+ u32 *num_entries_ptr,
+ u32 *table_data_size_ptr)
+{
+ struct sep_lli_entry *lli_table_ptr;
+
+ dev_dbg(&sep->pdev->dev, "sep_prepare_empty_lli_table start\n");
+
+ /* find the area for new table */
+ lli_table_ptr =
+ (struct sep_lli_entry *)(sep->shared_addr +
+ SYNCHRONIC_DMA_TABLES_AREA_OFFSET_BYTES +
+ sep->num_lli_tables_created *
+ sizeof(struct sep_lli_entry) *
+ SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP);
+
+ lli_table_ptr->bus_address = 0;
+ lli_table_ptr->block_size = 0;
+
+ lli_table_ptr++;
+ lli_table_ptr->bus_address = 0xFFFFFFFF;
+ lli_table_ptr->block_size = 0;
+
+ /* set the output parameter value */
+ *lli_table_addr_ptr = sep->shared_bus +
+ SYNCHRONIC_DMA_TABLES_AREA_OFFSET_BYTES +
+ sep->num_lli_tables_created *
+ sizeof(struct sep_lli_entry) *
+ SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP;
+
+ /* set the num of entries and table data size for empty table */
+ *num_entries_ptr = 2;
+ *table_data_size_ptr = 0;
+
+ /* update the number of created tables */
+ sep->num_lli_tables_created++;
+
+ dev_dbg(&sep->pdev->dev, "sep_prepare_empty_lli_table start\n");
+
+}
+
+/**
+ * sep_prepare_input_dma_table -
+ * This function prepares only input DMA table for synhronic symmetric
+ * operations (HASH)
+ * Note that all bus addresses that are passed to the sep
+ * are in 32 bit format; the SEP is a 32 bit device
+ * @sep: pointer to struct sep_device
+ * @data_size:
+ * @block_size:
+ * @lli_table_ptr:
+ * @num_entries_ptr:
+ * @table_data_size_ptr:
+ * @is_kva: set for kernel data (kernel cryptio call)
+ */
+static int sep_prepare_input_dma_table(struct sep_device *sep,
+ unsigned long app_virt_addr,
+ u32 data_size,
+ u32 block_size,
+ dma_addr_t *lli_table_ptr,
+ u32 *num_entries_ptr,
+ u32 *table_data_size_ptr,
+ bool is_kva)
+{
+ /* pointer to the info entry of the table - the last entry */
+ struct sep_lli_entry *info_entry_ptr;
+
+ /* array of pointers ot page */
+ struct sep_lli_entry *lli_array_ptr;
+
+ /* points to the first entry to be processed in the lli_in_array */
+ u32 current_entry = 0;
+
+ /* num entries in the virtual buffer */
+ u32 sep_lli_entries = 0;
+
+ /* lli table pointer */
+ struct sep_lli_entry *in_lli_table_ptr;
+
+ /* the total data in one table */
+ u32 table_data_size = 0;
+
+ /* flag for last table */
+ u32 last_table_flag = 0;
+
+ /* number of entries in lli table */
+ u32 num_entries_in_table = 0;
+
+ /* next table address */
+ u32 lli_table_alloc_addr = 0;
+
+ /* error */
+ int error = 0;
+
+ dev_dbg(&sep->pdev->dev,
+ "sep_prepare_input_dma_table start\n");
+
+ dev_dbg(&sep->pdev->dev,
+ "data_size is %x\n", data_size);
+ dev_dbg(&sep->pdev->dev,
+ "block_size is %x\n", block_size);
+
+ /* initialize the pages pointers */
+ sep->dma_res_arr[sep->nr_dcb_creat].in_page_array = 0;
+ sep->dma_res_arr[sep->nr_dcb_creat].in_num_pages = 0;
+
+ /* set the kernel address for first table to be allocated */
+ lli_table_alloc_addr = (u32)(sep->shared_addr +
+ SYNCHRONIC_DMA_TABLES_AREA_OFFSET_BYTES +
+ sep->num_lli_tables_created *
+ sizeof(struct sep_lli_entry) *
+ SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP);
+
+ if (data_size == 0) {
+
+ /* special case - create meptu table - 2 entries, zero data */
+ sep_prepare_empty_lli_table(sep, lli_table_ptr,
+ num_entries_ptr,
+ table_data_size_ptr);
+
+ goto update_dcb_counter;
+ }
+
+ /* check if the pages are in Kernel Virtual Address layout */
+ if (is_kva == true)
+
+ /* lock the pages in the kernel */
+ error = sep_lock_kernel_pages(sep, app_virt_addr,
+ data_size, &lli_array_ptr, SEP_DRIVER_IN_FLAG);
+
+ else
+
+ /*
+ * lock the pages of the user buffer
+ * and translate them to pages
+ */
+ error = sep_lock_user_pages(sep, app_virt_addr,
+ data_size, &lli_array_ptr, SEP_DRIVER_IN_FLAG);
+
+ if (error)
+ goto end_function;
+
+ dev_dbg(&sep->pdev->dev,
+ "output sep_in_num_pages is %x\n",
+ sep->dma_res_arr[sep->nr_dcb_creat].in_num_pages);
+
+ current_entry = 0;
+ info_entry_ptr = 0;
+
+ sep_lli_entries =
+ sep->dma_res_arr[sep->nr_dcb_creat].in_num_pages;
+
+ /* loop till all the entries in in array are not processed */
+ while (current_entry < sep_lli_entries) {
+
+ /* set the new input and output tables */
+ in_lli_table_ptr =
+ (struct sep_lli_entry *)lli_table_alloc_addr;
+
+ lli_table_alloc_addr += sizeof(struct sep_lli_entry) *
+ SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP;
+
+ if (lli_table_alloc_addr >
+ ((u32)sep->shared_addr +
+ SYNCHRONIC_DMA_TABLES_AREA_OFFSET_BYTES +
+ SYNCHRONIC_DMA_TABLES_AREA_SIZE_BYTES)) {
+
+ error = -ENOMEM;
+ goto end_function_error;
+
+ }
+
+ /* update the number of created tables */
+ sep->num_lli_tables_created++;
+
+ /* calculate the maximum size of data for input table */
+ table_data_size = sep_calculate_lli_table_max_size(sep,
+ &lli_array_ptr[current_entry],
+ (sep_lli_entries - current_entry),
+ &last_table_flag);
+
+ /**
+ * if this is not the last table -
+ * then allign it to the block size
+ */
+ if (!last_table_flag)
+ table_data_size =
+ (table_data_size / block_size) * block_size;
+
+ dev_dbg(&sep->pdev->dev,
+ "output table_data_size is %x\n",
+ table_data_size);
+
+ /* construct input lli table */
+ sep_build_lli_table(sep, &lli_array_ptr[current_entry],
+ in_lli_table_ptr,
+ &current_entry, &num_entries_in_table, table_data_size);
+
+ if (info_entry_ptr == 0) {
+
+ /* set the output parameters to physical addresses */
+ *lli_table_ptr = sep_shared_area_virt_to_bus(sep,
+ in_lli_table_ptr);
+ *num_entries_ptr = num_entries_in_table;
+ *table_data_size_ptr = table_data_size;
+
+ dev_dbg(&sep->pdev->dev,
+ "output lli_table_in_ptr is %08lx\n",
+ (unsigned long)*lli_table_ptr);
+
+ }
+
+ else {
+
+ /* update the info entry of the previous in table */
+ info_entry_ptr->bus_address =
+ sep_shared_area_virt_to_bus(sep,
+ in_lli_table_ptr);
+ info_entry_ptr->block_size =
+ ((num_entries_in_table) << 24) |
+ (table_data_size);
+ }
+
+ /* save the pointer to the info entry of the current tables */
+ info_entry_ptr = in_lli_table_ptr + num_entries_in_table - 1;
+
+ }
+
+ /* print input tables */
+ sep_debug_print_lli_tables(sep, (struct sep_lli_entry *)
+ sep_shared_area_bus_to_virt(sep, *lli_table_ptr),
+ *num_entries_ptr,
+ *table_data_size_ptr);
+
+ /* the array of the pages */
+ kfree(lli_array_ptr);
+
+update_dcb_counter:
+
+ /* update dcb counter */
+ sep->nr_dcb_creat++;
+
+ goto end_function;
+
+end_function_error:
+
+ /* free all the allocated resources */
+ kfree(sep->dma_res_arr[sep->nr_dcb_creat].in_map_array);
+ kfree(lli_array_ptr);
+ kfree(sep->dma_res_arr[sep->nr_dcb_creat].in_page_array);
+
+end_function:
+
+ dev_dbg(&sep->pdev->dev,
+ "sep_prepare_input_dma_table end\n");
+
+ return error;
+
+}
+/**
+ * sep_construct_dma_tables_from_lli -
+ * This function creates the input and output dma tables for
+ * symmetric operations (AES/DES) according to the block
+ * size from LLI arays
+ * Note that all bus addresses that are passed to the sep
+ * are in 32 bit format; the SEP is a 32 bit device
+ * @sep: pointer to struct_sep
+ * @lli_in_array:
+ * @sep_in_lli_entries:
+ * @lli_out_array:
+ * @sep_out_lli_entries
+ * @block_size
+ * @lli_table_in_ptr
+ * @lli_table_out_ptr
+ * @in_num_entries_ptr
+ * @out_num_entries_ptr
+ * @table_data_size_ptr
+ */
+static int sep_construct_dma_tables_from_lli(
+ struct sep_device *sep,
+ struct sep_lli_entry *lli_in_array,
+ u32 sep_in_lli_entries,
+ struct sep_lli_entry *lli_out_array,
+ u32 sep_out_lli_entries,
+ u32 block_size,
+ dma_addr_t *lli_table_in_ptr,
+ dma_addr_t *lli_table_out_ptr,
+ u32 *in_num_entries_ptr,
+ u32 *out_num_entries_ptr,
+ u32 *table_data_size_ptr)
+{
+ /* points to the area where next lli table can be allocated */
+ u32 lli_table_alloc_addr = 0;
+
+ /* input lli table */
+ struct sep_lli_entry *in_lli_table_ptr = 0;
+
+ /* output lli table */
+ struct sep_lli_entry *out_lli_table_ptr = 0;
+
+ /* pointer to the info entry of the table - the last entry */
+ struct sep_lli_entry *info_in_entry_ptr = 0;
+
+ /* pointer to the info entry of the table - the last entry */
+ struct sep_lli_entry *info_out_entry_ptr = 0;
+
+ /* points to the first entry to be processed in the lli_in_array */
+ u32 current_in_entry = 0;
+
+ /* points to the first entry to be processed in the lli_out_array */
+ u32 current_out_entry = 0;
+
+ /* max size of the input table */
+ u32 in_table_data_size = 0;
+
+ /* max size of the output table */
+ u32 out_table_data_size = 0;
+
+ /* flag te signifies if this is the last tables build */
+ u32 last_table_flag = 0;
+
+ /* the data size that should be in table */
+ u32 table_data_size = 0;
+
+ /* number of etnries in the input table */
+ u32 num_entries_in_table = 0;
+
+ /* number of etnries in the output table */
+ u32 num_entries_out_table = 0;
+
+ dev_dbg(&sep->pdev->dev,
+ "sep_construct_dma_tables_from_lli start\n");
+
+ /* initiate to point after the message area */
+ lli_table_alloc_addr = (u32)(sep->shared_addr +
+ SYNCHRONIC_DMA_TABLES_AREA_OFFSET_BYTES +
+ (sep->num_lli_tables_created *
+ (sizeof(struct sep_lli_entry) *
+ SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP)));
+
+ /* loop till all the entries in in array are not processed */
+ while (current_in_entry < sep_in_lli_entries) {
+
+ /* set the new input and output tables */
+ in_lli_table_ptr =
+ (struct sep_lli_entry *)lli_table_alloc_addr;
+
+ lli_table_alloc_addr += sizeof(struct sep_lli_entry) *
+ SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP;
+
+ /* set the first output tables */
+ out_lli_table_ptr =
+ (struct sep_lli_entry *)lli_table_alloc_addr;
+
+ /* check if the DMA table area limit was overrun */
+ if ((lli_table_alloc_addr + sizeof(struct sep_lli_entry) *
+ SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP) >
+ ((u32)sep->shared_addr +
+ SYNCHRONIC_DMA_TABLES_AREA_OFFSET_BYTES +
+ SYNCHRONIC_DMA_TABLES_AREA_SIZE_BYTES)) {
+
+ dev_warn(&sep->pdev->dev,
+ "dma table limit overrun\n");
+ return -ENOMEM;
+ }
+
+ /* update the number of the lli tables created */
+ sep->num_lli_tables_created += 2;
+
+ lli_table_alloc_addr += sizeof(struct sep_lli_entry) *
+ SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP;
+
+ /* calculate the maximum size of data for input table */
+ in_table_data_size =
+ sep_calculate_lli_table_max_size(sep,
+ &lli_in_array[current_in_entry],
+ (sep_in_lli_entries - current_in_entry),
+ &last_table_flag);
+
+ /* calculate the maximum size of data for output table */
+ out_table_data_size =
+ sep_calculate_lli_table_max_size(sep,
+ &lli_out_array[current_out_entry],
+ (sep_out_lli_entries - current_out_entry),
+ &last_table_flag);
+
+ dev_dbg(&sep->pdev->dev,
+ "in_table_data_size is %x\n",
+ in_table_data_size);
+
+ dev_dbg(&sep->pdev->dev,
+ "out_table_data_size is %x\n",
+ out_table_data_size);
+
+ table_data_size = in_table_data_size;
+
+ if (!last_table_flag) {
+ /*
+ * if this is not the last table,
+ * then must check where the data is smallest
+ * and then align it to the block size
+ */
+ if (table_data_size > out_table_data_size)
+ table_data_size = out_table_data_size;
+
+ /*
+ * now calculate the table size so that
+ * it will be module block size
+ */
+ table_data_size = (table_data_size / block_size) *
+ block_size;
+ }
+
+ dev_dbg(&sep->pdev->dev,
+ "table_data_size is %x\n", table_data_size);
+
+ /* construct input lli table */
+ sep_build_lli_table(sep, &lli_in_array[current_in_entry],
+ in_lli_table_ptr,
+ &current_in_entry,
+ &num_entries_in_table,
+ table_data_size);
+
+ /* construct output lli table */
+ sep_build_lli_table(sep, &lli_out_array[current_out_entry],
+ out_lli_table_ptr,
+ &current_out_entry,
+ &num_entries_out_table,
+ table_data_size);
+
+ /* if info entry is null - this is the first table built */
+ if (info_in_entry_ptr == 0) {
+ /* set the output parameters to physical addresses */
+ *lli_table_in_ptr =
+ sep_shared_area_virt_to_bus(sep, in_lli_table_ptr);
+
+ *in_num_entries_ptr = num_entries_in_table;
+
+ *lli_table_out_ptr =
+ sep_shared_area_virt_to_bus(sep,
+ out_lli_table_ptr);
+
+ *out_num_entries_ptr = num_entries_out_table;
+ *table_data_size_ptr = table_data_size;
+
+ dev_dbg(&sep->pdev->dev,
+ "output lli_table_in_ptr is %08lx\n",
+ (unsigned long)*lli_table_in_ptr);
+ dev_dbg(&sep->pdev->dev,
+ "output lli_table_out_ptr is %08lx\n",
+ (unsigned long)*lli_table_out_ptr);
+ } else {
+ /* update the info entry of the previous in table */
+ info_in_entry_ptr->bus_address =
+ sep_shared_area_virt_to_bus(sep,
+ in_lli_table_ptr);
+
+ info_in_entry_ptr->block_size =
+ ((num_entries_in_table) << 24) |
+ (table_data_size);
+
+ /* update the info entry of the previous in table */
+ info_out_entry_ptr->bus_address =
+ sep_shared_area_virt_to_bus(sep,
+ out_lli_table_ptr);
+
+ info_out_entry_ptr->block_size =
+ ((num_entries_out_table) << 24) |
+ (table_data_size);
+
+ dev_dbg(&sep->pdev->dev,
+ "output lli_table_in_ptr:%08lx %08x\n",
+ (unsigned long)info_in_entry_ptr->bus_address,
+ info_in_entry_ptr->block_size);
+
+ dev_dbg(&sep->pdev->dev,
+ "output lli_table_out_ptr:%08lx %08x\n",
+ (unsigned long)info_out_entry_ptr->bus_address,
+ info_out_entry_ptr->block_size);
+ }
+
+ /* save the pointer to the info entry of the current tables */
+ info_in_entry_ptr = in_lli_table_ptr +
+ num_entries_in_table - 1;
+ info_out_entry_ptr = out_lli_table_ptr +
+ num_entries_out_table - 1;
+
+ dev_dbg(&sep->pdev->dev,
+ "output num_entries_out_table is %x\n",
+ (u32)num_entries_out_table);
+ dev_dbg(&sep->pdev->dev,
+ "output info_in_entry_ptr is %lx\n",
+ (unsigned long)info_in_entry_ptr);
+ dev_dbg(&sep->pdev->dev,
+ "output info_out_entry_ptr is %lx\n",
+ (unsigned long)info_out_entry_ptr);
+ }
+
+ /* print input tables */
+ sep_debug_print_lli_tables(sep,
+ (struct sep_lli_entry *)
+ sep_shared_area_bus_to_virt(sep, *lli_table_in_ptr),
+ *in_num_entries_ptr,
+ *table_data_size_ptr);
+
+ /* print output tables */
+ sep_debug_print_lli_tables(sep,
+ (struct sep_lli_entry *)
+ sep_shared_area_bus_to_virt(sep, *lli_table_out_ptr),
+ *out_num_entries_ptr,
+ *table_data_size_ptr);
+
+ dev_dbg(&sep->pdev->dev,
+ "sep_construct_dma_tables_from_lli end\n");
+
+ return 0;
+}
+
+/**
+ * sep_prepare_input_output_dma_table -
+ * This function builds input and output DMA tables for synhronic
+ * symmetric operations (AES, DES, HASH). It also checks that each table
+ * is of the modular block size
+ * Note that all bus addresses that are passed to the sep
+ * are in 32 bit format; the SEP is a 32 bit device
+ * @app_virt_in_addr:
+ * @app_virt_out_addr:
+ * @data_size:
+ * @block_size:
+ * @lli_table_in_ptr:
+ * @lli_table_out_ptr:
+ * @in_num_entries_ptr:
+ * @out_num_entries_ptr:
+ * @table_data_size_ptr:
+ * @is_kva: set for kernel data; used only for kernel crypto module
+ */
+static int sep_prepare_input_output_dma_table(struct sep_device *sep,
+ unsigned long app_virt_in_addr,
+ unsigned long app_virt_out_addr,
+ u32 data_size,
+ u32 block_size,
+ dma_addr_t *lli_table_in_ptr,
+ dma_addr_t *lli_table_out_ptr,
+ u32 *in_num_entries_ptr,
+ u32 *out_num_entries_ptr,
+ u32 *table_data_size_ptr,
+ bool is_kva)
+
+{
+ /* array of pointers of page */
+ struct sep_lli_entry *lli_in_array;
+
+ /* array of pointers of page */
+ struct sep_lli_entry *lli_out_array;
+
+ /* error */
+ int error = 0;
+
+ dev_dbg(&sep->pdev->dev,
+ "sep_prepare_input_output_dma_table start\n");
+
+ if (data_size == 0) {
+
+ /* prepare empty table for input and output */
+ sep_prepare_empty_lli_table(sep, lli_table_in_ptr,
+ in_num_entries_ptr, table_data_size_ptr);
+
+ sep_prepare_empty_lli_table(sep, lli_table_out_ptr,
+ out_num_entries_ptr, table_data_size_ptr);
+
+ goto update_dcb_counter;
+ }
+
+ /* initialize the pages pointers */
+ sep->dma_res_arr[sep->nr_dcb_creat].in_page_array = 0;
+ sep->dma_res_arr[sep->nr_dcb_creat].out_page_array = 0;
+
+ /* lock the pages of the buffer and translate them to pages */
+ if (is_kva == true) {
+ error = sep_lock_kernel_pages(sep, app_virt_in_addr,
+ data_size, &lli_in_array, SEP_DRIVER_IN_FLAG);
+
+ if (error) {
+ dev_warn(&sep->pdev->dev,
+ "lock kernel for in failed\n");
+ goto end_function;
+ }
+
+ error = sep_lock_kernel_pages(sep, app_virt_out_addr,
+ data_size, &lli_out_array, SEP_DRIVER_OUT_FLAG);
+
+ if (error) {
+ dev_warn(&sep->pdev->dev,
+ "lock kernel for out failed\n");
+ goto end_function;
+ }
+ }
+
+ else {
+ error = sep_lock_user_pages(sep, app_virt_in_addr,
+ data_size, &lli_in_array, SEP_DRIVER_IN_FLAG);
+ if (error) {
+ dev_warn(&sep->pdev->dev, "sep_lock_user_pages for "
+ "input virtual buffer failed\n");
+ goto end_function;
+ }
+
+ error = sep_lock_user_pages(sep, app_virt_out_addr,
+ data_size, &lli_out_array, SEP_DRIVER_OUT_FLAG);
+
+ if (error) {
+ dev_warn(&sep->pdev->dev, "sep_lock_user_pages for "
+ "output virtual buffer failed\n");
+ goto end_function_free_lli_in;
+ }
+ }
+
+ dev_dbg(&sep->pdev->dev,
+ "sep_in_num_pages is %x\n",
+ sep->dma_res_arr[sep->nr_dcb_creat].in_num_pages);
+ dev_dbg(&sep->pdev->dev,
+ "sep_out_num_pages is %x\n",
+ sep->dma_res_arr[sep->nr_dcb_creat].out_num_pages);
+ dev_dbg(&sep->pdev->dev,
+ "SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP is %x\n",
+ SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP);
+
+ /* call the fucntion that creates table from the lli arrays */
+ error = sep_construct_dma_tables_from_lli(sep, lli_in_array,
+ sep->dma_res_arr[sep->nr_dcb_creat].in_num_pages,
+ lli_out_array,
+ sep->dma_res_arr[sep->nr_dcb_creat].out_num_pages,
+ block_size, lli_table_in_ptr, lli_table_out_ptr,
+ in_num_entries_ptr, out_num_entries_ptr, table_data_size_ptr);
+
+ if (error) {
+ dev_warn(&sep->pdev->dev,
+ "sep_construct_dma_tables_from_lli failed\n");
+ goto end_function_with_error;
+ }
+
+ kfree(lli_out_array);
+ kfree(lli_in_array);
+
+update_dcb_counter:
+
+ /* update dcb counter */
+ sep->nr_dcb_creat++;
+
+ /* fall through - free the lli entry arrays */
+ dev_dbg(&sep->pdev->dev,
+ "in_num_entries_ptr is %08x\n", *in_num_entries_ptr);
+ dev_dbg(&sep->pdev->dev,
+ "out_num_entries_ptr is %08x\n", *out_num_entries_ptr);
+ dev_dbg(&sep->pdev->dev,
+ "table_data_size_ptr is %08x\n", *table_data_size_ptr);
+
+ goto end_function;
+
+end_function_with_error:
+
+ kfree(sep->dma_res_arr[sep->nr_dcb_creat].out_map_array);
+ kfree(sep->dma_res_arr[sep->nr_dcb_creat].out_page_array);
+ kfree(lli_out_array);
+
+
+end_function_free_lli_in:
+
+ kfree(sep->dma_res_arr[sep->nr_dcb_creat].in_map_array);
+ kfree(sep->dma_res_arr[sep->nr_dcb_creat].in_page_array);
+ kfree(lli_in_array);
+
+end_function:
+
+ dev_dbg(&sep->pdev->dev,
+ "sep_prepare_input_output_dma_table"
+ " end result = %d\n", error);
+
+ return error;
+
+}
+
+/**
+ * sep_prepare_input_output_dma_table_in_dcb -
+ * This function prepares the linked dma tables and puts the
+ * address for the linked list of tables inta a dcb (data control
+ * block) the address of which is known by the sep hardware
+ * Note that all bus addresses that are passed to the sep
+ * are in 32 bit format; the SEP is a 32 bit device
+ * @app_in_address: unsigned long; for data buffer in (user space)
+ * @app_out_address: unsigned long; for data buffer out (user space)
+ * @data_in_size: u32; for size of data
+ * @block_size: u32; for block size
+ * @tail_block_size: u32; for size of tail block
+ * @isapplet: bool; to indicate external app
+ * @is_kva: bool; kernel buffer; only used for kernel crypto module
+ */
+static int sep_prepare_input_output_dma_table_in_dcb(struct sep_device *sep,
+ u32 app_in_address,
+ u32 app_out_address,
+ u32 data_in_size,
+ u32 block_size,
+ u32 tail_block_size,
+ bool isapplet,
+ bool is_kva)
+{
+ /* error */
+ int error = 0;
+
+ /* size of tail */
+ u32 tail_size = 0;
+
+ /* address of the created dcb table */
+ struct sep_dcblock *dcb_table_ptr = 0;
+
+ /* the physical address of the first input DMA table */
+ dma_addr_t in_first_mlli_address = 0;
+
+ /* number of entries in the first input DMA table */
+ u32 in_first_num_entries = 0;
+
+ /* the physical address of the first output DMA table */
+ dma_addr_t out_first_mlli_address = 0;
+
+ /* number of entries in the first output DMA table */
+ u32 out_first_num_entries = 0;
+
+ /* data in the first input/output table */
+ u32 first_data_size = 0;
+
+ dev_dbg(&sep->pdev->dev,
+ "prepare_input_output_dma_table_in_dcb start\n");
+
+ if (sep->nr_dcb_creat == SEP_MAX_NUM_SYNC_DMA_OPS) {
+ /*No more DCBS to allocate*/
+ dev_warn(&sep->pdev->dev, "no more dcb's available\n");
+ error = -ENOSPC;
+ goto end_function;
+ }
+
+ /* allocate new DCB */
+ dcb_table_ptr = (struct sep_dcblock *)(sep->shared_addr +
+ SEP_DRIVER_SYSTEM_DCB_MEMORY_OFFSET_IN_BYTES +
+ (sep->nr_dcb_creat * sizeof(struct sep_dcblock)));
+
+ /* set the default values in the dcb */
+ dcb_table_ptr->input_mlli_address = 0;
+ dcb_table_ptr->input_mlli_num_entries = 0;
+ dcb_table_ptr->input_mlli_data_size = 0;
+ dcb_table_ptr->output_mlli_address = 0;
+ dcb_table_ptr->output_mlli_num_entries = 0;
+ dcb_table_ptr->output_mlli_data_size = 0;
+ dcb_table_ptr->tail_data_size = 0;
+ dcb_table_ptr->out_vr_tail_pt = 0;
+
+ if (isapplet == true) {
+ tail_size = data_in_size % block_size;
+
+ if (tail_size) {
+
+ if (data_in_size < tail_block_size) {
+ dev_warn(&sep->pdev->dev,
+ "data in size smaller than tail"
+ " block size\n");
+ error = -ENOSPC;
+ goto end_function;
+ }
+
+ if (tail_block_size)
+ /*
+ * case the tail size should be
+ * bigger than the real block size
+ */
+ tail_size = tail_block_size +
+ ((data_in_size -
+ tail_block_size) % block_size);
+ }
+
+ /* check if there is enough data for dma operation */
+ if (data_in_size < SEP_DRIVER_MIN_DATA_SIZE_PER_TABLE) {
+ if (is_kva == true) {
+ memcpy(dcb_table_ptr->tail_data,
+ (void *)app_in_address, data_in_size);
+ }
+
+ else {
+ if (copy_from_user(dcb_table_ptr->tail_data,
+ (void __user *)app_in_address,
+ data_in_size)) {
+ error = -EFAULT;
+ goto end_function;
+ }
+ }
+
+ dcb_table_ptr->tail_data_size = data_in_size;
+
+ /* set the output user-space address for mem2mem op */
+ if (app_out_address)
+ dcb_table_ptr->out_vr_tail_pt =
+ (u32)app_out_address;
+
+ /*
+ * Update both data length parameters in order to avoid
+ * second data copy and allow building of empty mlli
+ * tables
+ */
+ tail_size = 0x0;
+ data_in_size = 0x0;
+ }
+
+ if (tail_size) {
+ if (is_kva == true) {
+ memcpy(dcb_table_ptr->tail_data,
+ (void *)(app_in_address + data_in_size -
+ tail_size), tail_size);
+ }
+
+ else {
+ /* we have tail data - copy it to dcb */
+ if (copy_from_user(dcb_table_ptr->tail_data,
+ (void *)(app_in_address +
+ data_in_size - tail_size), tail_size)) {
+ error = -EFAULT;
+ goto end_function;
+ }
+ }
+
+ if (app_out_address)
+ /*
+ * Caclulate the output address
+ * according to tail data size
+ */
+ dcb_table_ptr->out_vr_tail_pt =
+ app_out_address + data_in_size
+ - tail_size;
+
+ /*save the real tail data size*/
+ dcb_table_ptr->tail_data_size = tail_size;
+ /*
+ * Update the data size without the tail
+ * data size AKA data for the dma
+ */
+ data_in_size = (data_in_size - tail_size);
+ }
+ }
+
+ /* check if we need to build only input table or input/output */
+ if (app_out_address) {
+ /* prepare input/output tables */
+ error = sep_prepare_input_output_dma_table(sep,
+ app_in_address,
+ app_out_address,
+ data_in_size,
+ block_size,
+ &in_first_mlli_address,
+ &out_first_mlli_address,
+ &in_first_num_entries,
+ &out_first_num_entries,
+ &first_data_size,
+ is_kva);
+ }
+
+ else {
+ /* prepare input tables */
+ error = sep_prepare_input_dma_table(sep,
+ app_in_address,
+ data_in_size,
+ block_size,
+ &in_first_mlli_address,
+ &in_first_num_entries,
+ &first_data_size,
+ is_kva);
+ }
+
+ if (error) {
+ dev_warn(&sep->pdev->dev, "prepare dma table call failed"
+ " from prepare dcb call\n");
+ goto end_function;
+ }
+
+ /* set the dcb values */
+ dcb_table_ptr->input_mlli_address = in_first_mlli_address;
+ dcb_table_ptr->input_mlli_num_entries = in_first_num_entries;
+ dcb_table_ptr->input_mlli_data_size = first_data_size;
+ dcb_table_ptr->output_mlli_address = out_first_mlli_address;
+ dcb_table_ptr->output_mlli_num_entries = out_first_num_entries;
+ dcb_table_ptr->output_mlli_data_size = first_data_size;
+
+end_function:
+
+ dev_dbg(&sep->pdev->dev,
+ "sep_prepare_input_output_dma_table_in_dcb end\n");
+ return error;
+
+}
+
+
+/**
+ * sep_create_sync_dma_tables_handler -
+ * this function handles tha request for creation of the DMA table
+ * for the synchronic symmetric operations (AES,DES)
+ * Note that all bus addresses that are passed to the sep
+ * are in 32 bit format; the SEP is a 32 bit device
+ * @sep: pointer to struct sep_device
+ * @arg: pointer to struct bld_syn_tab_struct
+*/
+static int sep_create_sync_dma_tables_handler(struct sep_device *sep,
+ unsigned long arg)
+{
+ int error = 0;
+
+ /* command arguments */
+ struct bld_syn_tab_struct command_args;
+
+ dev_dbg(&sep->pdev->dev,
+ "sep_create_sync_dma_tables_handler start\n");
+
+ if (copy_from_user(&command_args, (void __user *)arg,
+ sizeof(struct bld_syn_tab_struct))) {
+ error = -EFAULT;
+ dev_warn(&sep->pdev->dev, "create dma tables;"
+ " copy_from_user fails\n");
+ goto end_function;
+ }
+
+ dev_dbg(&sep->pdev->dev,
+ "app_in_address is %08llx\n", command_args.app_in_address);
+ dev_dbg(&sep->pdev->dev,
+ "app_out_address is %08llx\n", command_args.app_out_address);
+ dev_dbg(&sep->pdev->dev,
+ "data_size is %u\n", command_args.data_in_size);
+ dev_dbg(&sep->pdev->dev,
+ "block_size is %u\n", command_args.block_size);
+
+ /* validate user parameters */
+ if (!command_args.app_in_address) {
+
+ dev_warn(&sep->pdev->dev,
+ "params validation error\n");
+
+ error = -EINVAL;
+ goto end_function;
+ }
+
+ error = sep_prepare_input_output_dma_table_in_dcb(sep,
+ command_args.app_in_address,
+ command_args.app_out_address,
+ command_args.data_in_size,
+ command_args.block_size,
+ 0x0,
+ false,
+ false);
+
+end_function:
+
+ dev_dbg(&sep->pdev->dev, "sep_create_sync_dma_tables_handler end\n");
+ return error;
+}
+
+/**
+ * sep_free_dma_tables_and_dcb -
+ * This function frees the dma tables and dcb block
+ * @sep: pointer to struct sep_device
+ * @isapplet: indicates external application (used for kernel access)
+ * @is_kva: indicates kernel addresses (only used for kernel crypto)
+ */
+static int sep_free_dma_tables_and_dcb(struct sep_device *sep, bool isapplet,
+ bool is_kva)
+{
+
+ int i = 0;
+ int error = 0;
+ int error_temp = 0;
+
+ struct sep_dcblock *dcb_table_ptr;
+
+ dev_dbg(&sep->pdev->dev, "sep_free_dma_tables_and_dcb start\n");
+
+ if (isapplet == true) {
+
+ /* set pointer to first dcb table */
+ dcb_table_ptr = (struct sep_dcblock *)
+ (sep->shared_addr +
+ SEP_DRIVER_SYSTEM_DCB_MEMORY_OFFSET_IN_BYTES);
+
+ /* go over each dcb and see if tail pointer must be updated */
+ for (i = 0; i < sep->nr_dcb_creat; i++, dcb_table_ptr++) {
+
+ if (dcb_table_ptr->out_vr_tail_pt) {
+
+ if (is_kva == true) {
+ memcpy((void *)dcb_table_ptr->out_vr_tail_pt,
+ dcb_table_ptr->tail_data,
+ dcb_table_ptr->tail_data_size);
+ }
+
+ else {
+ error_temp = copy_to_user(
+ (void *)dcb_table_ptr->out_vr_tail_pt,
+ dcb_table_ptr->tail_data,
+ dcb_table_ptr->tail_data_size);
+ }
+
+ if (error_temp) {
+ /* release the dma resource */
+ error = error_temp;
+ }
+ }
+ }
+ }
+
+ /* free the output pages, if any */
+ sep_free_dma_table_data_handler(sep);
+
+ dev_dbg(&sep->pdev->dev, "sep_free_dma_tables_and_dcb end\n");
+ return error;
+}
+
+/**
+ * sep_get_static_pool_addr_handler -
+ * this function sets the bus and virtual addresses of the static pool
+ * and returns the virtual address
+ * @sep: pointer to struct sep_device
+ * @arg: parameters from user space application
+ */
+static int sep_get_static_pool_addr_handler(struct sep_device *sep,
+ unsigned long arg)
+{
+ struct stat_pool_addr_struct command_args;
+
+ u32 *static_pool_addr = 0;
+
+ unsigned long addr_hold;
+
+ dev_dbg(&sep->pdev->dev, "sep_get_static_pool_addr_handler start\n");
+
+ static_pool_addr = (u32 *)(sep->shared_addr +
+ SEP_DRIVER_SYSTEM_RAR_MEMORY_OFFSET_IN_BYTES);
+
+ static_pool_addr[0] = SEP_STATIC_POOL_VAL_TOKEN;
+ static_pool_addr[1] = sep->shared_bus +
+ SEP_DRIVER_STATIC_AREA_OFFSET_IN_BYTES;
+
+ addr_hold = (unsigned long)
+ (sep->shared_addr + SEP_DRIVER_STATIC_AREA_OFFSET_IN_BYTES);
+ command_args.static_virt_address = (aligned_u64)addr_hold;
+
+ dev_dbg(&sep->pdev->dev, "static pool: physical %x virtual %x\n",
+ (u32)static_pool_addr[1],
+ (u32)command_args.static_virt_address);
+
+ /* send the parameters to user application */
+ if (copy_to_user((void __user *) arg, &command_args,
+ sizeof(struct stat_pool_addr_struct)))
+ return -EFAULT;
+
+ dev_dbg(&sep->pdev->dev, "sep_get_static_pool_addr_handler end\n");
+
+ return 0;
+}
+
+/**
+ * sep_start_handler -
+ * This function starts the sep device
+ * @sep: pointer to struct sep_device
+ */
+static int sep_start_handler(struct sep_device *sep)
+{
+ unsigned long reg_val;
+ unsigned long error = 0;
+
+ dev_dbg(&sep->pdev->dev, "sep_start_handler start\n");
+
+ /* wait in polling for message from SEP */
+ do
+ reg_val = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR3_REG_ADDR);
+ while (!reg_val);
+
+ /* check the value */
+ if (reg_val == 0x1)
+ /* fatal error - read error status from GPRO */
+ error = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR0_REG_ADDR);
+ dev_dbg(&sep->pdev->dev, "sep_start_handler end\n");
+ return error;
+}
+
+/**
+ * ep_check_sum_calc -
+ * This function performs a checsum for messages that are sent
+ * to the sep
+ * @data:
+ * @length:
+ */
+static u32 sep_check_sum_calc(u8 *data, u32 length)
+{
+ u32 sum = 0;
+ u16 *Tdata = (u16 *)data;
+
+ while (length > 1) {
+ /* This is the inner loop */
+ sum += *Tdata++;
+ length -= 2;
+ }
+
+ /* Add left-over byte, if any */
+ if (length > 0)
+ sum += *(u8 *)Tdata;
+
+ /* Fold 32-bit sum to 16 bits */
+ while (sum>>16)
+ sum = (sum & 0xffff) + (sum >> 16);
+
+ return ~sum & 0xFFFF;
+}
+
+/**
+ * sep_init_handler -
+ * this function handles the request for SEP initialization
+ * Note that this will go away for Medfield once the SCU
+ * SEP initialization is complete
+ * Also note that the message to the sep has components
+ * from user space as well as components written by the driver
+ * This is becuase the portions of the message that partain to
+ * physical addresses must be set by the driver after the message
+ * leaves custody of the user space application for security
+ * reasons.
+ * @sep: pointer to struct sep_device
+ * @arg: parameters from user space application
+ */
+static int sep_init_handler(struct sep_device *sep, unsigned long arg)
+{
+ u32 message_buff[14];
+ u32 counter;
+ int error = 0;
+ u32 reg_val;
+ dma_addr_t new_base_addr;
+ unsigned long addr_hold;
+ struct init_struct command_args;
+
+ dev_dbg(&sep->pdev->dev, "sep_init_handler start\n");
+ error = 0;
+
+ /* make sure that we have not initialized already */
+ reg_val = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR3_REG_ADDR);
+
+ if (reg_val != 0x2) {
+ error = SEP_ALREADY_INITIALIZED_ERR;
+ dev_warn(&sep->pdev->dev,
+ "init; device already initialized\n");
+ goto end_function;
+ }
+
+ /* only root can initialize */
+ if (!capable(CAP_SYS_ADMIN)) {
+ dev_warn(&sep->pdev->dev,
+ "init; only root can init\n");
+ error = -EACCES;
+ goto end_function;
+ }
+
+ /* copy in the parameters */
+ error = copy_from_user(&command_args, (void __user *)arg,
+ sizeof(struct init_struct));
+
+ if (error) {
+ dev_warn(&sep->pdev->dev,
+ "init; copy_from_user failed %x\n", error);
+ goto end_function;
+ }
+
+ /* validate parameters */
+ if (!command_args.message_addr || !command_args.sep_sram_addr ||
+ command_args.message_size_in_words > 14) {
+
+ dev_warn(&sep->pdev->dev,
+ "init; parameter error\n");
+ error = -EINVAL;
+ goto end_function;
+ }
+
+ /* copy in the sep init message */
+ addr_hold = (unsigned long)command_args.message_addr;
+ error = copy_from_user(message_buff,
+ (void __user *)addr_hold,
+ command_args.message_size_in_words*sizeof(u32));
+
+ if (error) {
+
+ dev_warn(&sep->pdev->dev,
+ "init; copy sep init message failed %x\n", error);
+ goto end_function;
+ }
+
+ /* load resident, cache, and extapp firmware */
+ error = sep_load_firmware(sep);
+
+ if (error) {
+
+ dev_warn(&sep->pdev->dev,
+ "init; copy sep init message failed %x\n", error);
+ goto end_function;
+ }
+
+ /* compute the base address */
+ new_base_addr = sep->shared_bus;
+
+ if (sep->resident_bus < new_base_addr)
+ new_base_addr = sep->resident_bus;
+
+ if (sep->cache_bus < new_base_addr)
+ new_base_addr = sep->cache_bus;
+
+ if (sep->dcache_bus < new_base_addr)
+ new_base_addr = sep->dcache_bus;
+
+ /* put physical addresses in sep message */
+ message_buff[3] = (u32)new_base_addr;
+ message_buff[4] = (u32)sep->shared_bus;
+ message_buff[6] = (u32)sep->resident_bus;
+ message_buff[7] = (u32)sep->cache_bus;
+ message_buff[8] = (u32)sep->dcache_bus;
+
+ message_buff[command_args.message_size_in_words - 1] = 0x0;
+ message_buff[command_args.message_size_in_words - 1] =
+ sep_check_sum_calc((u8 *)message_buff,
+ command_args.message_size_in_words*sizeof(u32));
+
+ /* debug print of message */
+ for (counter = 0; counter < command_args.message_size_in_words;
+ counter++)
+
+ dev_dbg(&sep->pdev->dev,
+ "init; sep message word %d is %x\n",
+ counter, message_buff[counter]);
+
+ /* tell the sep the sram address */
+ sep_write_reg(sep, HW_SRAM_ADDR_REG_ADDR, command_args.sep_sram_addr);
+
+ /* push the message to the sep */
+ for (counter = 0; counter < command_args.message_size_in_words;
+ counter++) {
+
+ sep_write_reg(sep, HW_SRAM_DATA_REG_ADDR,
+ message_buff[counter]);
+
+ sep_wait_sram_write(sep);
+ }
+
+ /* signal sep that message is ready and to init */
+ sep_write_reg(sep, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x1);
+
+ /* wait for acknowledge */
+ dev_dbg(&sep->pdev->dev, "init; waiting for msg response\n");
+
+ do
+ reg_val = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR3_REG_ADDR);
+ while (!(reg_val & 0xFFFFFFFD));
+
+ if (reg_val == 0x1) {
+
+ dev_warn(&sep->pdev->dev, "init; device int failed\n");
+ error = sep_read_reg(sep, 0x8060);
+ dev_warn(&sep->pdev->dev, "init; sw monitor is %x\n", error);
+ error = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR0_REG_ADDR);
+ dev_warn(&sep->pdev->dev, "init; error is %x\n", error);
+ goto end_function;
+ }
+
+ dev_dbg(&sep->pdev->dev, "init; end CC INIT, reg_val is %x\n",
+ reg_val);
+
+ /* signal sep to zero the GPR3 */
+ sep_write_reg(sep, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x10);
+
+ /* wait for response */
+ dev_dbg(&sep->pdev->dev, "init; waiting for zero set response\n");
+
+ do
+ reg_val = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR3_REG_ADDR);
+ while (reg_val != 0);
+
+
+end_function:
+ dev_dbg(&sep->pdev->dev, "init is done\n");
+ return error;
+}
+
+/**
+ * sep_end_transaction_handler -
+ * This API handles the end transaction request
+ * @sep: pointer to struct sep_device
+ */
+static int sep_end_transaction_handler(struct sep_device *sep)
+{
+ dev_dbg(&sep->pdev->dev, "sep_end_transaction_handler start\n");
+
+ /* clear the data pool pointers Token */
+ memset((void *)(sep->shared_addr +
+ SEP_DRIVER_DATA_POOL_ALLOCATION_OFFSET_IN_BYTES),
+ 0, sep->num_of_data_allocations*2*sizeof(u32));
+
+ /* check that all the dma resources were freed */
+ sep_free_dma_table_data_handler(sep);
+
+ clear_bit(SEP_MMAP_LOCK_BIT, &sep->in_use_flags);
+
+ /*
+ * we are now through with the transaction. Let's
+ * allow other processes who have the device open
+ * to perform transactions
+ */
+ mutex_lock(&sep->sep_mutex);
+ sep->pid_doing_transaction = 0;
+ mutex_unlock(&sep->sep_mutex);
+ /* raise event for stuck contextes */
+ wake_up(&sep->event);
+
+ dev_dbg(&sep->pdev->dev, "waking up event\n");
+ dev_dbg(&sep->pdev->dev, "sep_end_transaction_handler end\n");
+
+ return 0;
+}
+
+/**
+ * sep_prepare_dcb_handler -
+ * This function will retrieve the RAR buffer physical addresses, type
+ * & size corresponding to the RAR handles provided in the buffers vector.
+ * @sep: pointer to struct sep_device
+ * @arg: pointer to user parameters
+ */
+
+static int sep_prepare_dcb_handler(struct sep_device *sep, unsigned long arg)
+{
+ /* error */
+ int error = 0;
+
+ /* command arguments */
+ struct build_dcb_struct command_args;
+
+ dev_dbg(&sep->pdev->dev, "sep_prepare_dcb_handler start\n");
+
+ /* get the command arguments */
+ if (copy_from_user(&command_args, (void __user *)arg,
+ sizeof(struct build_dcb_struct))) {
+ error = -EFAULT;
+ goto end_function;
+ }
+
+ dev_dbg(&sep->pdev->dev,
+ "app_in_address is %08llx\n", command_args.app_in_address);
+ dev_dbg(&sep->pdev->dev,
+ "app_out_address is %08llx\n", command_args.app_out_address);
+ dev_dbg(&sep->pdev->dev,
+ "data_size is %x\n", command_args.data_in_size);
+ dev_dbg(&sep->pdev->dev,
+ "block_size is %x\n", command_args.block_size);
+ dev_dbg(&sep->pdev->dev,
+ "tail block_size is %x\n", command_args.tail_block_size);
+
+ error = sep_prepare_input_output_dma_table_in_dcb(sep,
+ command_args.app_in_address, command_args.app_out_address,
+ command_args.data_in_size, command_args.block_size,
+ command_args.tail_block_size, true, false);
+
+end_function:
+
+ dev_dbg(&sep->pdev->dev, "sep_prepare_dcb_handler end\n");
+ return error;
+
+}
+
+/**
+ * sep_free_dcb_handler -
+ * this function frees the DCB resources
+ * and updates the needed user-space buffers
+ * @sep: pointer to struct sep_device
+ */
+static int sep_free_dcb_handler(struct sep_device *sep)
+{
+ int error ;
+
+ dev_dbg(&sep->pdev->dev, "sep_prepare_dcb_handler start\n");
+ dev_dbg(&sep->pdev->dev, "num of DCBs %x\n", sep->nr_dcb_creat);
+
+ error = sep_free_dma_tables_and_dcb(sep, false, false);
+
+ dev_dbg(&sep->pdev->dev, "sep_free_dcb_handler end\n");
+ return error;
+}
+
+/**
+ * sep_rar_prepare_output_msg_handler -
+ * This function will retrieve the RAR buffer physical addresses, type
+ * & size corresponding to the RAR handles provided in the buffers vector.
+ * @sep: pointer to struct sep_device
+ * @arg: pointer to user parameters
+ */
+
+static int sep_rar_prepare_output_msg_handler(struct sep_device *sep,
+ unsigned long arg)
+{
+ /* error return code */
+ int error = 0;
+
+ /* command args */
+ struct rar_hndl_to_bus_struct command_args;
+ struct RAR_buffer rar_buf;
+
+ /* bus address */
+ dma_addr_t rar_bus = 0;
+
+ /* holds the RAR address in the system memory offset */
+ u32 *rar_addr;
+
+ dev_dbg(&sep->pdev->dev,
+ "sep_rar_prepare_output_msg_handler start\n");
+
+ /* copy the data */
+ if (copy_from_user(&command_args,
+ (void __user *)arg,
+ sizeof(command_args))) {
+ error = -EFAULT;
+ goto end_function;
+ }
+
+ /* call to translation function only if user handle is not NULL */
+ if (command_args.rar_handle) {
+
+ memset(&rar_buf, 0, sizeof(rar_buf));
+ rar_buf.info.handle = (u32)command_args.rar_handle;
+
+ if (rar_handle_to_bus(&rar_buf, 1) != 1) {
+ dev_dbg(&sep->pdev->dev,
+ "rar_handle_to_bus failure\n");
+ error = -EFAULT;
+ goto end_function;
+ }
+
+ rar_bus = rar_buf.bus_address;
+ }
+
+ dev_dbg(&sep->pdev->dev, "rar msg; rar_addr_bus = %x\n",
+ (u32)rar_bus);
+
+ /* set value in the SYSTEM MEMORY offset */
+ rar_addr = (u32 *)(sep->shared_addr +
+ SEP_DRIVER_SYSTEM_RAR_MEMORY_OFFSET_IN_BYTES);
+
+ /* copy the physical address to the System Area for the sep */
+ rar_addr[0] = SEP_RAR_VAL_TOKEN;
+ rar_addr[1] = rar_bus;
+
+end_function:
+
+ dev_dbg(&sep->pdev->dev,
+ "sep_rar_prepare_output_msg_handler start\n");
+
+ return error;
+}
+
+/**
+ * sep_realloc_ext_cache_handler -
+ * This function tells the sep where the extapp is located
+ * @sep: pointer to struct sep_device
+ * @arg: pointer to user parameters
+ */
+static int sep_realloc_ext_cache_handler(struct sep_device *sep,
+ unsigned long arg)
+{
+ /* holds the new ext cache address in the system memory offset */
+ u32 *system_addr;
+
+ /* set value in the SYSTEM MEMORY offset */
+ system_addr = (u32 *)(sep->shared_addr +
+ SEP_DRIVER_SYSTEM_EXT_CACHE_ADDR_OFFSET_IN_BYTES);
+
+ /* copy the physical address to the System Area for the sep */
+
+ system_addr[0] = SEP_EXT_CACHE_ADDR_VAL_TOKEN;
+ dev_dbg(&sep->pdev->dev,
+ "ext cache init; system addr 0 is %x\n", system_addr[0]);
+ system_addr[1] = sep->extapp_bus;
+ dev_dbg(&sep->pdev->dev,
+ "ext cache init; system addr 1 is %x\n", system_addr[1]);
+
+ return 0;
+}
+
+/**
+ * sep_ioctl - ioctl api
+ * @filp: pointer to struct file
+ * @cmd: command
+ * @arg: pointer to argument structure
+ */
+static long sep_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
+{
+ int error = 0;
+ struct sep_device *sep = filp->private_data;
+
+ dev_dbg(&sep->pdev->dev, "ioctl start\n");
+
+ dev_dbg(&sep->pdev->dev, "cmd is %x\n", cmd);
+ dev_dbg(&sep->pdev->dev,
+ "SEP_IOCSENDSEPCOMMAND is %x\n", SEP_IOCSENDSEPCOMMAND);
+ dev_dbg(&sep->pdev->dev,
+ "SEP_IOCALLOCDATAPOLL is %x\n", SEP_IOCALLOCDATAPOLL);
+ dev_dbg(&sep->pdev->dev,
+ "SEP_IOCCREATESYMDMATABLE is %x\n", SEP_IOCCREATESYMDMATABLE);
+ dev_dbg(&sep->pdev->dev,
+ "SEP_IOCFREEDMATABLEDATA is %x\n", SEP_IOCFREEDMATABLEDATA);
+ dev_dbg(&sep->pdev->dev,
+ "SEP_IOCSEPSTART is %x\n", SEP_IOCSEPSTART);
+ dev_dbg(&sep->pdev->dev,
+ "SEP_IOCSEPINIT is %x\n", SEP_IOCSEPINIT);
+ dev_dbg(&sep->pdev->dev,
+ "SEP_IOCGETSTATICPOOLADDR is %x\n", SEP_IOCGETSTATICPOOLADDR);
+ dev_dbg(&sep->pdev->dev,
+ "SEP_IOCENDTRANSACTION is %x\n", SEP_IOCENDTRANSACTION);
+ dev_dbg(&sep->pdev->dev,
+ "SEP_IOCREALLOCEXTCACHE is %x\n", SEP_IOCREALLOCEXTCACHE);
+ dev_dbg(&sep->pdev->dev,
+ "SEP_IOCRARPREPAREMESSAGE is %x\n", SEP_IOCRARPREPAREMESSAGE);
+ dev_dbg(&sep->pdev->dev,
+ "SEP_IOCPREPAREDCB is %x\n", SEP_IOCPREPAREDCB);
+ dev_dbg(&sep->pdev->dev,
+ "SEP_IOCFREEDCB is %x\n", SEP_IOCFREEDCB);
+
+ /* make sure we own this device */
+ mutex_lock(&sep->sep_mutex);
+ if ((current->pid != sep->pid_doing_transaction) &&
+ (sep->pid_doing_transaction != 0)) {
+
+ dev_dbg(&sep->pdev->dev, "ioctl pid is not owner\n");
+ mutex_unlock(&sep->sep_mutex);
+ error = -EACCES;
+ goto end_function;
+ }
+
+ mutex_unlock(&sep->sep_mutex);
+
+ /* check that the command is for sep device */
+ if (_IOC_TYPE(cmd) != SEP_IOC_MAGIC_NUMBER) {
+ error = -ENOTTY;
+ goto end_function;
+ }
+
+ /* lock to prevent the daemon to interfere with operation */
+ mutex_lock(&sep->ioctl_mutex);
+
+ switch (cmd) {
+ case SEP_IOCSENDSEPCOMMAND:
+ /* send command to SEP */
+ error = sep_send_command_handler(sep);
+ break;
+ case SEP_IOCALLOCDATAPOLL:
+ /* allocate data pool */
+ error = sep_allocate_data_pool_memory_handler(sep, arg);
+ break;
+ case SEP_IOCCREATESYMDMATABLE:
+ /* create dma table for synhronic operation */
+ error = sep_create_sync_dma_tables_handler(sep, arg);
+ break;
+ case SEP_IOCFREEDMATABLEDATA:
+ /* free the pages */
+ error = sep_free_dma_table_data_handler(sep);
+ break;
+ case SEP_IOCSEPSTART:
+ /* start command to sep */
+ if (sep->pdev->revision == 0) /* only for old chip */
+ error = sep_start_handler(sep);
+ else
+ error = -EPERM; /* not permitted on new chip */
+ break;
+ case SEP_IOCSEPINIT:
+ /* init command to sep */
+ if (sep->pdev->revision == 0) /* only for old chip */
+ error = sep_init_handler(sep, arg);
+ else
+ error = -EPERM; /* not permitted on new chip */
+ break;
+ case SEP_IOCGETSTATICPOOLADDR:
+ /* get the physical and virtual addresses of the static pool */
+ error = sep_get_static_pool_addr_handler(sep, arg);
+ break;
+ case SEP_IOCENDTRANSACTION:
+ error = sep_end_transaction_handler(sep);
+ break;
+ case SEP_IOCREALLOCEXTCACHE:
+ if (sep->mrst)
+ error = -ENODEV;
+ if (sep->pdev->revision == 0) /* only for old chip */
+ error = sep_realloc_ext_cache_handler(sep, arg);
+ else
+ error = -EPERM; /* not permitted on new chip */
+ break;
+ case SEP_IOCRARPREPAREMESSAGE:
+ error = sep_rar_prepare_output_msg_handler(sep, arg);
+ break;
+ case SEP_IOCPREPAREDCB:
+ error = sep_prepare_dcb_handler(sep, arg);
+ break;
+ case SEP_IOCFREEDCB:
+ error = sep_free_dcb_handler(sep);
+ break;
+ default:
+ dev_warn(&sep->pdev->dev, "invalid ioctl %x\n", cmd);
+ error = -ENOTTY;
+ break;
+ }
+
+ mutex_unlock(&sep->ioctl_mutex);
+
+end_function:
+
+ dev_dbg(&sep->pdev->dev, "ioctl end\n");
+ return error;
+}
+
+/**
+ * sep_singleton_ioctl - ioctl api for singleton interface
+ * @filp: pointer to struct file
+ * @cmd: command
+ * @arg: pointer to argument structure
+ */
+static long sep_singleton_ioctl(struct file *filp, u32 cmd, unsigned long arg)
+{
+
+ /* error */
+ long error;
+ struct sep_device *sep = filp->private_data;
+
+ error = 0;
+
+ dev_dbg(&sep->pdev->dev,
+ "singleton_ioctl start\n");
+
+ dev_dbg(&sep->pdev->dev,
+ "cmd is %x\n", cmd);
+
+ /* check that the command is for sep device */
+ if (_IOC_TYPE(cmd) != SEP_IOC_MAGIC_NUMBER) {
+ error = -ENOTTY;
+ goto end_function;
+ }
+
+ /* make sure we own this device */
+ mutex_lock(&sep->sep_mutex);
+ if ((current->pid != sep->pid_doing_transaction) &&
+ (sep->pid_doing_transaction != 0)) {
+
+ dev_dbg(&sep->pdev->dev, "singleton ioctl pid is not owner\n");
+ mutex_unlock(&sep->sep_mutex);
+ error = -EACCES;
+ goto end_function;
+ }
+
+ mutex_unlock(&sep->sep_mutex);
+
+ switch (cmd) {
+
+ case SEP_IOCTLSETCALLERID:
+ mutex_lock(&sep->ioctl_mutex);
+ error = sep_set_caller_id_handler(sep, arg);
+ mutex_unlock(&sep->ioctl_mutex);
+ break;
+
+ default:
+ error = sep_ioctl(filp, cmd, arg);
+ break;
+
+ }
+
+end_function:
+
+ dev_dbg(&sep->pdev->dev, "singleton ioctl end\n");
+ return error;
+}
+
+/**
+ * sep_request_daemon_ioctl - ioctl for daemon
+ * @filp: pointer to struct file
+ * @cmd: command
+ * @arg: pointer to argument structure
+ * Called by the request daemon to perform ioctls on the daemon device
+ */
+
+static long sep_request_daemon_ioctl(struct file *filp, u32 cmd,
+ unsigned long arg)
+{
+
+ long error;
+
+ struct sep_device *sep = filp->private_data;
+
+ dev_dbg(&sep->pdev->dev,
+ "daemon ioctl: start\n");
+
+ dev_dbg(&sep->pdev->dev,
+ "daemon ioctl: cmd is %x\n", cmd);
+
+ /* check that the command is for sep device */
+ if (_IOC_TYPE(cmd) != SEP_IOC_MAGIC_NUMBER) {
+ error = -ENOTTY;
+ goto end_function;
+ }
+
+ /* only one process can access ioctl at any given time */
+ mutex_lock(&sep->ioctl_mutex);
+
+ switch (cmd) {
+ case SEP_IOCSENDSEPRPLYCOMMAND:
+
+ /* send reply command to SEP */
+ error = sep_req_daemon_send_reply_command_handler(sep);
+ break;
+
+ case SEP_IOCENDTRANSACTION:
+
+ /*
+ * end req daemon transaction, do nothing
+ * will be removed upon update in middleware
+ * API library
+ */
+ error = 0;
+ break;
+
+ default:
+ dev_dbg(&sep->pdev->dev,
+ "daemon ioctl: no such IOCTL\n");
+ error = -ENOTTY;
+ }
+
+ mutex_unlock(&sep->ioctl_mutex);
+
+end_function:
+
+ dev_dbg(&sep->pdev->dev,
+ "daemon ioctl: end\n");
+ return error;
+
+}
+
+/**
+ * sep_inthandler - Interrupt Handler
+ * @irq: interrupt
+ * @dev_id: device id
+ */
+
+static irqreturn_t sep_inthandler(int irq, void *dev_id)
+{
+ irqreturn_t int_error = IRQ_HANDLED;
+ unsigned long lck_flags;
+ u32 reg_val, reg_val2 = 0;
+ struct sep_device *sep = dev_id;
+
+ /* read the IRR register to check if this is SEP interrupt */
+ reg_val = sep_read_reg(sep, HW_HOST_IRR_REG_ADDR);
+ dev_dbg(&sep->pdev->dev,
+ "SEP Interrupt - reg is %08x\n", reg_val);
+
+ if (reg_val & (0x1 << 13)) {
+
+ /* lock and update the counter of reply messages */
+ spin_lock_irqsave(&sep->snd_rply_lck, lck_flags);
+ sep->reply_ct++;
+ spin_unlock_irqrestore(&sep->snd_rply_lck, lck_flags);
+
+ dev_dbg(&sep->pdev->dev, "sep int: send_ct %lx reply_ct %lx\n",
+ sep->send_ct, sep->reply_ct);
+
+ /* is this printf or daemon request? */
+ reg_val2 = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR2_REG_ADDR);
+ dev_dbg(&sep->pdev->dev,
+ "SEP Interrupt - reg2 is %08x\n", reg_val2);
+
+ if ((reg_val2 >> 30) & 0x1) {
+
+ dev_dbg(&sep->pdev->dev, "int: printf request\n");
+ wake_up(&sep->event_request_daemon);
+ }
+
+ else if (reg_val2 >> 31) {
+
+ dev_dbg(&sep->pdev->dev, "int: daemon request\n");
+ wake_up(&sep->event_request_daemon);
+ } else {
+
+ dev_dbg(&sep->pdev->dev, "int: sep reply\n");
+ wake_up(&sep->event);
+ }
+
+ } else {
+
+ dev_dbg(&sep->pdev->dev, "int: not sep interrupt\n");
+ int_error = IRQ_NONE;
+ }
+
+ if (int_error == IRQ_HANDLED)
+ sep_write_reg(sep, HW_HOST_ICR_REG_ADDR, reg_val);
+
+ return int_error;
+}
+
+/**
+ * sep_callback -
+ * Function that is called by rar_register when it is ready with
+ * a region (only for Moorestown)
+ * @sep_context_pointer: pointer to struct sep_device
+ */
+static int sep_callback(unsigned long sep_context_pointer)
+{
+ int error = 0;
+ struct sep_device *sep =
+ (struct sep_device *)sep_context_pointer;
+
+ dma_addr_t rar_end_address = 0;
+
+ dev_dbg(&sep->pdev->dev, "callback start\n");
+
+ error = rar_get_address(RAR_TYPE_IMAGE, &sep->rar_bus,
+ &rar_end_address);
+
+ if (error) {
+ dev_warn(&sep->pdev->dev, "mrst cant get rar region\n");
+ goto end_function;
+ }
+
+ sep->rar_size = (size_t)(rar_end_address - sep->rar_bus + 1);
+
+ if (!request_mem_region(sep->rar_bus, sep->rar_size,
+ "sep_sec_driver")) {
+ dev_warn(&sep->pdev->dev,
+ "request mem region for mrst failed\n");
+ error = -1;
+ goto end_function;
+ }
+
+ sep->rar_addr = ioremap_nocache(sep->rar_bus, sep->rar_size);
+ if (!sep->rar_addr) {
+ dev_warn(&sep->pdev->dev,
+ "ioremap nocache for mrst rar failed\n");
+ error = -1;
+ goto end_function;
+ }
+
+ dev_dbg(&sep->pdev->dev, "rar start is %p, phy is %llx,"
+ " size is %x\n",
+ sep->rar_addr, (unsigned long long)sep->rar_bus,
+ sep->rar_size);
+
+end_function:
+
+ dev_dbg(&sep->pdev->dev, "callback end\n");
+ return error;
+}
+
+/**
+ * sep_probe -
+ * Function that is activated on the successful probe of the SEP device
+ * @pdev: pci_device
+ * @end: pci_device_id
+ */
+static int __devinit sep_probe(struct pci_dev *pdev,
+ const struct pci_device_id *ent)
+{
+ int error = 0;
+ struct sep_device *sep;
+
+ pr_debug("Sep pci probe starting\n");
+ if (sep_dev != NULL) {
+ dev_warn(&pdev->dev, "only one SEP supported.\n");
+ return -EBUSY;
+ }
+
+ /* enable the device */
+ error = pci_enable_device(pdev);
+ if (error) {
+ dev_warn(&pdev->dev, "error enabling pci device\n");
+ goto end_function;
+ }
+
+ /* allocate the sep_device structure for this device */
+ sep_dev = kmalloc(sizeof(struct sep_device), GFP_ATOMIC);
+
+ if (sep_dev == NULL) {
+ dev_warn(&pdev->dev,
+ "can't kmalloc the sep_device structure\n");
+ return -ENOMEM;
+ }
+
+ /* zero out sep structure */
+ memset((void *)sep_dev, 0, sizeof(struct sep_device));
+
+ /*
+ * we're going to use another variable for actually
+ * working with the device; this way, if we have
+ * multiple devices in the future, it would be easier
+ * to make appropriate changes
+ */
+ sep = sep_dev;
+
+ sep->pdev = pdev;
+
+ if (pdev->device == MRST_PCI_DEVICE_ID)
+ sep->mrst = 1;
+ else
+ sep->mrst = 0;
+
+ dev_dbg(&sep->pdev->dev, "PCI obtained, device being prepared\n");
+ dev_dbg(&sep->pdev->dev, "revision is %d\n", sep->pdev->revision);
+
+ /* set up our register area */
+ sep->reg_physical_addr = pci_resource_start(sep->pdev, 0);
+ if (!sep->reg_physical_addr) {
+ dev_warn(&sep->pdev->dev, "Error getting register start\n");
+ pci_dev_put(sep->pdev);
+ return -ENODEV;
+ }
+
+ sep->reg_physical_end = pci_resource_end(sep->pdev, 0);
+ if (!sep->reg_physical_end) {
+ dev_warn(&sep->pdev->dev, "Error getting register end\n");
+ pci_dev_put(sep->pdev);
+ return -ENODEV;
+ }
+
+ sep->reg_addr = ioremap_nocache(sep->reg_physical_addr,
+ (size_t)(sep->reg_physical_end - sep->reg_physical_addr + 1));
+ if (!sep->reg_addr) {
+ dev_warn(&sep->pdev->dev, "Error getting register virtual\n");
+ pci_dev_put(sep->pdev);
+ return -ENODEV;
+ }
+
+ dev_dbg(&sep->pdev->dev,
+ "Register area start %llx end %llx virtual %p\n",
+ (unsigned long long)sep->reg_physical_addr,
+ (unsigned long long)sep->reg_physical_end,
+ sep->reg_addr);
+
+ /* allocate the shared area */
+ sep->shared_size = SEP_DRIVER_MESSAGE_SHARED_AREA_SIZE_IN_BYTES +
+ SYNCHRONIC_DMA_TABLES_AREA_SIZE_BYTES +
+ SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES +
+ SEP_DRIVER_STATIC_AREA_SIZE_IN_BYTES +
+ SEP_DRIVER_SYSTEM_DATA_MEMORY_SIZE_IN_BYTES;
+
+ if (sep_map_and_alloc_shared_area(sep)) {
+ error = -ENOMEM;
+ /* allocation failed */
+ goto end_function_error;
+ }
+
+ /* the next section depends on type of unit */
+ if (sep->mrst) {
+ error = register_rar(RAR_TYPE_IMAGE, &sep_callback,
+ (unsigned long)sep);
+ if (error) {
+ dev_dbg(&sep->pdev->dev,
+ "error register_rar\n");
+ goto end_function_deallocate_sep_shared_area;
+ }
+ } else {
+
+ sep->rar_size = FAKE_RAR_SIZE;
+ sep->rar_addr = dma_alloc_coherent(NULL,
+ sep->rar_size, &sep->rar_bus, GFP_KERNEL);
+ if (sep->rar_addr == NULL) {
+ dev_warn(&sep->pdev->dev, "cant allocate mfld rar\n");
+ error = -ENOMEM;
+ goto end_function_deallocate_sep_shared_area;
+ }
+
+ dev_dbg(&sep->pdev->dev, "rar start is %p, phy is %llx,"
+ " size is %x\n", sep->rar_addr,
+ (unsigned long long)sep->rar_bus,
+ sep->rar_size);
+ }
+
+ dev_dbg(&sep->pdev->dev,
+ "about to write IMR and ICR REG_ADDR\n");
+
+ /* clear ICR register */
+ sep_write_reg(sep, HW_HOST_ICR_REG_ADDR, 0xFFFFFFFF);
+
+ /* set the IMR register - open only GPR 2 */
+ sep_write_reg(sep, HW_HOST_IMR_REG_ADDR, (~(0x1 << 13)));
+
+ dev_dbg(&sep->pdev->dev,
+ "about to call request_irq\n");
+ /* get the interrupt line */
+ error = request_irq(pdev->irq, sep_inthandler, IRQF_SHARED,
+ "sep_driver", sep);
+
+ if (error)
+ goto end_function_free_res;
+
+ goto end_function;
+
+end_function_free_res:
+ if (sep->rar_addr)
+ dma_free_coherent(&sep->pdev->dev, sep->rar_size,
+ sep->rar_addr, sep->rar_bus);
+ goto end_function;
+
+end_function_deallocate_sep_shared_area:
+ /* de-allocate shared area */
+ sep_unmap_and_free_shared_area(sep);
+
+end_function_error:
+ iounmap(sep->reg_addr);
+ kfree(sep_dev);
+ sep_dev = NULL;
+
+end_function:
+ return error;
+}
+
+static DEFINE_PCI_DEVICE_TABLE(sep_pci_id_tbl) = {
+ {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MRST_PCI_DEVICE_ID)},
+ {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MFLD_PCI_DEVICE_ID)},
+ {0}
+};
+
+MODULE_DEVICE_TABLE(pci, sep_pci_id_tbl);
+
+/* field for registering driver to PCI device */
+static struct pci_driver sep_pci_driver = {
+ .name = "sep_sec_driver",
+ .id_table = sep_pci_id_tbl,
+ .probe = sep_probe
+ /* FIXME: remove handler */
+};
+
+/* file operation for singleton sep operations */
+static const struct file_operations singleton_file_operations = {
+ .owner = THIS_MODULE,
+ .unlocked_ioctl = sep_singleton_ioctl,
+ .poll = sep_poll,
+ .open = sep_singleton_open,
+ .release = sep_singleton_release,
+ .mmap = sep_mmap,
+};
+
+/* file operation for daemon operations */
+static const struct file_operations daemon_file_operations = {
+ .owner = THIS_MODULE,
+ .unlocked_ioctl = sep_request_daemon_ioctl,
+ .poll = sep_request_daemon_poll,
+ .open = sep_request_daemon_open,
+ .release = sep_request_daemon_release,
+ .mmap = sep_request_daemon_mmap,
+};
+
+/* the files operations structure of the driver */
+static const struct file_operations sep_file_operations = {
+ .owner = THIS_MODULE,
+ .unlocked_ioctl = sep_ioctl,
+ .poll = sep_poll,
+ .open = sep_open,
+ .release = sep_release,
+ .mmap = sep_mmap,
+};
+
+/**
+ * sep_reconfig_shared_area -
+ * reconfig the shared area between HOST and SEP - needed in case
+ * the DX_CC_Init function was called before OS loading
+ * @sep: pointer to struct sep_device
+ */
+static int sep_reconfig_shared_area(struct sep_device *sep)
+{
+ int ret_val = 0;
+
+ dev_dbg(&sep->pdev->dev, "reconfig shared area start\n");
+
+ /* send the new SHARED MESSAGE AREA to the SEP */
+ dev_dbg(&sep->pdev->dev, "sending %08llx to sep\n",
+ (unsigned long long)sep->shared_bus);
+
+ sep_write_reg(sep, HW_HOST_HOST_SEP_GPR1_REG_ADDR,
+ sep->shared_bus);
+
+ /* poll for SEP response */
+ ret_val = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR1_REG_ADDR);
+
+ while (ret_val != 0xffffffff &&
+ ret_val != sep->shared_bus) {
+
+ ret_val = sep_read_reg(sep,
+ HW_HOST_SEP_HOST_GPR1_REG_ADDR);
+ }
+
+ /* check the return value (register) */
+ if (ret_val != sep->shared_bus) {
+ dev_warn(&sep->pdev->dev, "could not reconfig shared area\n");
+ dev_warn(&sep->pdev->dev, "result was %x\n", ret_val);
+ ret_val = -ENOMEM;
+ }
+
+ else {
+ ret_val = 0;
+ }
+
+ dev_dbg(&sep->pdev->dev, "reconfig shared area end\n");
+ return ret_val;
+}
+
+/**
+ * sep_register_driver_to_fs -
+ * This function registers the driver to the file system
+ * @sep: pointer to struct sep_device
+ */
+static int sep_register_driver_to_fs(struct sep_device *sep)
+{
+ int ret_val = 0;
+
+ sep->miscdev_sep.minor = MISC_DYNAMIC_MINOR;
+ sep->miscdev_sep.name = SEP_DEV_NAME;
+ sep->miscdev_sep.fops = &sep_file_operations;
+
+ sep->miscdev_singleton.minor = MISC_DYNAMIC_MINOR;
+ sep->miscdev_singleton.name = SEP_DEV_SINGLETON;
+ sep->miscdev_singleton.fops = &singleton_file_operations;
+
+ sep->miscdev_daemon.minor = MISC_DYNAMIC_MINOR;
+ sep->miscdev_daemon.name = SEP_DEV_DAEMON;
+ sep->miscdev_daemon.fops = &daemon_file_operations;
+
+ ret_val = misc_register(&sep->miscdev_sep);
+ if (ret_val) {
+ dev_warn(&sep->pdev->dev, "misc reg fails for sep %x\n",
+ ret_val);
+ return ret_val;
+ }
+
+ ret_val = misc_register(&sep->miscdev_singleton);
+ if (ret_val) {
+ dev_warn(&sep->pdev->dev, "misc reg fails for sing %x\n",
+ ret_val);
+ misc_deregister(&sep->miscdev_sep);
+ return ret_val;
+ }
+
+ if (!sep->mrst) {
+ ret_val = misc_register(&sep->miscdev_daemon);
+ if (ret_val) {
+ dev_warn(&sep->pdev->dev,
+ "misc reg fails for dmn %x\n",
+ ret_val);
+ misc_deregister(&sep->miscdev_sep);
+ misc_deregister(&sep->miscdev_singleton);
+
+ return ret_val;
+ }
+ }
+
+ return ret_val;
+}
+
+/**
+ * sep_init - init function; this is the first thing called on boot
+ */
+static int __init sep_init(void)
+{
+ int ret_val = 0;
+ struct sep_device *sep = NULL;
+
+ pr_debug("Sep driver: Init start\n");
+
+ ret_val = pci_register_driver(&sep_pci_driver);
+ if (ret_val) {
+ pr_debug("sep_driver:sep_driver_to_device failed,"
+ " ret_val is %d\n", ret_val);
+ goto end_function;
+ }
+
+ sep = sep_dev;
+
+ init_waitqueue_head(&sep->event);
+ init_waitqueue_head(&sep->event_request_daemon);
+ spin_lock_init(&sep->snd_rply_lck);
+ mutex_init(&sep->sep_mutex);
+ mutex_init(&sep->ioctl_mutex);
+
+ if (sep->mrst == 0) {
+ ret_val = sep_init_caller_id(sep);
+ if (ret_val) {
+ dev_warn(&sep->pdev->dev,
+ "cant init caller id\n");
+ goto end_function_unregister_pci;
+ }
+
+ }
+
+ /* new chip requires share area reconfigure */
+ if (sep->pdev->revision == 4) { /* only for new chip */
+ ret_val = sep_reconfig_shared_area(sep);
+ if (ret_val)
+ goto end_function_unregister_pci;
+ }
+
+ /* register driver to fs */
+ ret_val = sep_register_driver_to_fs(sep);
+ if (ret_val) {
+ dev_warn(&sep->pdev->dev,
+ "error registering device to file\n");
+ goto end_function_unregister_pci;
+ }
+
+ goto end_function;
+
+end_function_unregister_pci:
+ pci_unregister_driver(&sep_pci_driver);
+
+end_function:
+ dev_dbg(&sep->pdev->dev, "Init end\n");
+ return ret_val;
+}
+
+
+/**
+ * sep_exit - called to unload driver (never called on static compile)
+ */
+static void __exit sep_exit(void)
+{
+ struct sep_device *sep;
+
+ sep = sep_dev;
+ pr_debug("Exit start\n");
+
+ /* unregister from fs */
+ misc_deregister(&sep->miscdev_sep);
+ misc_deregister(&sep->miscdev_singleton);
+ misc_deregister(&sep->miscdev_daemon);
+
+ /* free the irq */
+ free_irq(sep->pdev->irq, sep);
+
+ /* unregister the driver */
+ pci_unregister_driver(&sep_pci_driver);
+
+ /* free shared area */
+ if (sep_dev) {
+ sep_unmap_and_free_shared_area(sep_dev);
+ dev_dbg(&sep->pdev->dev,
+ "free pages SEP SHARED AREA\n");
+ iounmap((void *) sep_dev->reg_addr);
+ dev_dbg(&sep->pdev->dev,
+ "iounmap\n");
+ }
+ pr_debug("release_mem_region\n");
+ pr_debug("Exit end\n");
+}
+
+
+module_init(sep_init);
+module_exit(sep_exit);
+
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/sep/sep_driver_api.h b/drivers/staging/sep/sep_driver_api.h
new file mode 100644
index 0000000..1207722
--- /dev/null
+++ b/drivers/staging/sep/sep_driver_api.h
@@ -0,0 +1,309 @@
+/*
+ *
+ * sep_driver_api.h - Security Processor Driver api definitions
+ *
+ * Copyright(c) 2009,2010 Intel Corporation. All rights reserved.
+ * Contributions(c) 2009,2010 Discretix. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59
+ * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * CONTACTS:
+ *
+ * Mark Allyn [email protected]
+ * Jayant Mangalampalli [email protected]
+ *
+ * CHANGES:
+ *
+ * 2010.09.14 Upgrade to Medfield
+ *
+ */
+
+#ifndef __SEP_DRIVER_API_H__
+#define __SEP_DRIVER_API_H__
+
+/* Type of request from device */
+#define SEP_DRIVER_SRC_REPLY 1
+#define SEP_DRIVER_SRC_REQ 2
+#define SEP_DRIVER_SRC_PRINTF 3
+
+
+/*-------------------------------------------
+ TYPEDEFS
+----------------------------------------------*/
+
+/*
+ * Note that several members of these structres are only here
+ * for campatability with the middleware; they are not used
+ * by this driver.
+ * All user space buffer addresses are set to aligned u64
+ * in order to ensure compatibility with 64 bit systems
+ */
+
+/*
+ init command struct; this will go away when SCU does init
+*/
+struct init_struct {
+ /* address that SEP can access for message */
+ aligned_u64 message_addr;
+
+ /* message size */
+ u32 message_size_in_words;
+
+ /* offset of the init message in the sep sram */
+ aligned_u64 sep_sram_addr;
+
+ /* -not used- resident size in bytes*/
+ u32 unused_resident_size_in_bytes;
+
+ /* -not used- cache size in bytes*/
+ u32 unused_cache_size_in_bytes;
+
+ /* -not used- ext cache current address */
+ aligned_u64 unused_extcache_addr;
+
+ /* -not used- ext cache size in bytes*/
+ u32 unused_extcache_size_in_bytes;
+};
+
+struct realloc_ext_struct {
+ /* -not used- current external cache address */
+ aligned_u64 unused_ext_cache_addr;
+
+ /* -not used- external cache size in bytes*/
+ u32 unused_ext_cache_size_in_bytes;
+};
+
+struct alloc_struct {
+ /* offset from start of shared pool area */
+ u32 offset;
+ /* number of bytes to allocate */
+ u32 num_bytes;
+};
+
+/*
+ Note that all app addresses are cast as u32; the sep
+ middleware sends them as fixed 32 bit words
+*/
+struct bld_syn_tab_struct {
+ /* address value of the data in (user space addr) */
+ aligned_u64 app_in_address;
+
+ /* size of data in */
+ u32 data_in_size;
+
+ /* address of the data out (user space addr) */
+ aligned_u64 app_out_address;
+
+ /* the size of the block of the operation - if needed,
+ every table will be modulo this parameter */
+ u32 block_size;
+
+ /* -not used- distinct user/kernel layout */
+ bool isKernelVirtualAddress;
+
+};
+
+/*
+ * command struct for static pool addresses
+ * Please note that this is a kernel virtual
+ * address; this will be removed at the next
+ * release of the Discretix middleware
+ */
+struct stat_pool_addr_struct {
+ /* virtual address of the static pool */
+ aligned_u64 static_virt_address;
+};
+
+
+/* command struct for getting caller id value and address */
+struct caller_id_struct {
+ /* pid of the process */
+ u32 pid;
+ /* virtual address of the caller id hash */
+ aligned_u64 callerIdAddress;
+ /* caller id hash size in bytes */
+ u32 callerIdSizeInBytes;
+};
+
+/*
+ structure that represents DCB
+*/
+struct sep_dcblock {
+ /* physical address of the first input mlli */
+ u32 input_mlli_address;
+ /* num of entries in the first input mlli */
+ u32 input_mlli_num_entries;
+ /* size of data in the first input mlli */
+ u32 input_mlli_data_size;
+ /* physical address of the first output mlli */
+ u32 output_mlli_address;
+ /* num of entries in the first output mlli */
+ u32 output_mlli_num_entries;
+ /* size of data in the first output mlli */
+ u32 output_mlli_data_size;
+ /* pointer to the output virtual tail */
+ u32 out_vr_tail_pt;
+ /* size of tail data */
+ u32 tail_data_size;
+ /* input tail data array */
+ u8 tail_data[64];
+};
+
+struct sep_caller_id_entry {
+ int pid;
+ unsigned char callerIdHash[SEP_CALLER_ID_HASH_SIZE_IN_BYTES];
+};
+
+/*
+ command structure for building dcb block (currently for ext app only
+*/
+struct build_dcb_struct {
+ /* address value of the data in */
+ aligned_u64 app_in_address;
+ /* size of data in */
+ u32 data_in_size;
+ /* address of the data out */
+ aligned_u64 app_out_address;
+ /* the size of the block of the operation - if needed,
+ every table will be modulo this parameter */
+ u32 block_size;
+ /* the size of the block of the operation - if needed,
+ every table will be modulo this parameter */
+ u32 tail_block_size;
+};
+
+/**
+ * @struct sep_dma_map
+ *
+ * Structure that contains all information needed for mapping the user pages
+ * or kernel buffers for dma operations
+ *
+ *
+ */
+struct sep_dma_map {
+ /* mapped dma address */
+ dma_addr_t dma_addr;
+ /* size of the mapped data */
+ size_t size;
+};
+
+struct sep_dma_resource {
+ /* array of pointers to the pages that represent
+ input data for the synchronic DMA action */
+ struct page **in_page_array;
+
+ /* array of pointers to the pages that represent out
+ data for the synchronic DMA action */
+ struct page **out_page_array;
+
+ /* number of pages in the sep_in_page_array */
+ u32 in_num_pages;
+
+ /* number of pages in the sep_out_page_array */
+ u32 out_num_pages;
+
+ /* map array of the input data */
+ struct sep_dma_map *in_map_array;
+
+ /* map array of the output data */
+ struct sep_dma_map *out_map_array;
+
+ /* number of entries of the input mapp array */
+ u32 in_map_num_entries;
+
+ /* number of entries of the output mapp array */
+ u32 out_map_num_entries;
+};
+
+
+/* command struct for translating rar handle to bus address
+ and setting it at predefined location */
+struct rar_hndl_to_bus_struct {
+
+ /* rar handle */
+ aligned_u64 rar_handle;
+};
+
+/*
+ structure that represent one entry in the DMA LLI table
+*/
+struct sep_lli_entry {
+ /* physical address */
+ u32 bus_address;
+
+ /* block size */
+ u32 block_size;
+};
+
+/*----------------------------------------------------------------
+ IOCTL command defines
+ -----------------------------------------------------------------*/
+
+/* magic number 1 of the sep IOCTL command */
+#define SEP_IOC_MAGIC_NUMBER 's'
+
+/* sends interrupt to sep that message is ready */
+#define SEP_IOCSENDSEPCOMMAND \
+ _IO(SEP_IOC_MAGIC_NUMBER, 0)
+
+/* sends interrupt to sep that message is ready */
+#define SEP_IOCSENDSEPRPLYCOMMAND \
+ _IO(SEP_IOC_MAGIC_NUMBER, 1)
+
+/* allocate memory in data pool */
+#define SEP_IOCALLOCDATAPOLL \
+ _IOW(SEP_IOC_MAGIC_NUMBER, 2, struct alloc_struct)
+
+/* create sym dma lli tables */
+#define SEP_IOCCREATESYMDMATABLE \
+ _IOW(SEP_IOC_MAGIC_NUMBER, 5, struct bld_syn_tab_struct)
+
+/* free dynamic data aalocated during table creation */
+#define SEP_IOCFREEDMATABLEDATA \
+ _IO(SEP_IOC_MAGIC_NUMBER, 7)
+
+/* get the static pool area addersses (physical and virtual) */
+#define SEP_IOCGETSTATICPOOLADDR \
+ _IOR(SEP_IOC_MAGIC_NUMBER, 8, struct stat_pool_addr_struct)
+
+/* start sep command */
+#define SEP_IOCSEPSTART \
+ _IO(SEP_IOC_MAGIC_NUMBER, 12)
+
+/* init sep command */
+#define SEP_IOCSEPINIT \
+ _IOW(SEP_IOC_MAGIC_NUMBER, 13, struct init_struct)
+
+/* end transaction command */
+#define SEP_IOCENDTRANSACTION \
+ _IO(SEP_IOC_MAGIC_NUMBER, 15)
+
+/* reallocate external app; unused structure still needed for
+ * compatability with middleware */
+#define SEP_IOCREALLOCEXTCACHE \
+ _IOW(SEP_IOC_MAGIC_NUMBER, 18, struct realloc_ext_struct)
+
+#define SEP_IOCRARPREPAREMESSAGE \
+ _IOW(SEP_IOC_MAGIC_NUMBER, 20, struct rar_hndl_to_bus_struct)
+
+#define SEP_IOCTLSETCALLERID \
+ _IOW(SEP_IOC_MAGIC_NUMBER, 34, struct caller_id_struct)
+
+#define SEP_IOCPREPAREDCB \
+ _IOW(SEP_IOC_MAGIC_NUMBER, 35, struct build_dcb_struct)
+
+#define SEP_IOCFREEDCB \
+ _IO(SEP_IOC_MAGIC_NUMBER, 36)
+
+#endif
diff --git a/drivers/staging/sep/sep_driver_config.h b/drivers/staging/sep/sep_driver_config.h
new file mode 100644
index 0000000..686a353
--- /dev/null
+++ b/drivers/staging/sep/sep_driver_config.h
@@ -0,0 +1,428 @@
+/*
+ *
+ * sep_driver_config.h - Security Processor Driver configuration
+ *
+ * Copyright(c) 2009,2010 Intel Corporation. All rights reserved.
+ * Contributions(c) 2009,2010 Discretix. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59
+ * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * CONTACTS:
+ *
+ * Mark Allyn [email protected]
+ * Jayant Mangalampalli [email protected]
+ *
+ * CHANGES:
+ *
+ * 2010.06.26 Upgrade to Medfield
+ *
+ */
+
+#ifndef __SEP_DRIVER_CONFIG_H__
+#define __SEP_DRIVER_CONFIG_H__
+
+
+/*--------------------------------------
+ DRIVER CONFIGURATION FLAGS
+ -------------------------------------*/
+
+/* if flag is on , then the driver is running in polling and
+ not interrupt mode */
+#define SEP_DRIVER_POLLING_MODE 0
+
+/* flag which defines if the shared area address should be
+ reconfiged (send to SEP anew) during init of the driver */
+#define SEP_DRIVER_RECONFIG_MESSAGE_AREA 0
+
+/* the mode for running on the ARM1172 Evaluation platform (flag is 1) */
+#define SEP_DRIVER_ARM_DEBUG_MODE 0
+
+/*-------------------------------------------
+ INTERNAL DATA CONFIGURATION
+ -------------------------------------------*/
+
+/* flag for the input array */
+#define SEP_DRIVER_IN_FLAG 0
+
+/* flag for output array */
+#define SEP_DRIVER_OUT_FLAG 1
+
+/* maximum number of entries in one LLI tables */
+#define SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP 31
+
+/* minimum data size of the MLLI table */
+#define SEP_DRIVER_MIN_DATA_SIZE_PER_TABLE 16
+
+/* flag that signifies tah the lock is
+currently held by the proccess (struct file) */
+#define SEP_DRIVER_OWN_LOCK_FLAG 1
+
+/* flag that signifies tah the lock is currently NOT
+held by the proccess (struct file) */
+#define SEP_DRIVER_DISOWN_LOCK_FLAG 0
+
+/* indicates whether driver has mapped/unmapped shared area */
+#define SEP_REQUEST_DAEMON_MAPPED 1
+#define SEP_REQUEST_DAEMON_UNMAPPED 0
+
+/*--------------------------------------------------------
+ SHARED AREA memory total size is 36K
+ it is divided is following:
+
+ SHARED_MESSAGE_AREA 8K }
+ }
+ STATIC_POOL_AREA 4K } MAPPED AREA ( 24 K)
+ }
+ DATA_POOL_AREA 12K }
+
+ SYNCHRONIC_DMA_TABLES_AREA 5K
+
+ placeholder until drver changes
+ FLOW_DMA_TABLES_AREA 4K
+
+ SYSTEM_MEMORY_AREA 3k
+
+ SYSTEM_MEMORY total size is 3k
+ it is divided as following:
+
+ TIME_MEMORY_AREA 8B
+-----------------------------------------------------------*/
+
+#define SEP_DEV_NAME "sep_sec_driver"
+#define SEP_DEV_SINGLETON "sep_sec_singleton_driver"
+#define SEP_DEV_DAEMON "sep_req_daemon_driver"
+
+
+/*
+ the maximum length of the message - the rest of the message shared
+ area will be dedicated to the dma lli tables
+*/
+#define SEP_DRIVER_MAX_MESSAGE_SIZE_IN_BYTES (8 * 1024)
+
+/* the size of the message shared area in pages */
+#define SEP_DRIVER_MESSAGE_SHARED_AREA_SIZE_IN_BYTES (8 * 1024)
+
+/* the size of the data pool static area in pages */
+#define SEP_DRIVER_STATIC_AREA_SIZE_IN_BYTES (4 * 1024)
+
+/* the size of the data pool shared area size in pages */
+#define SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES (16 * 1024)
+
+/* the size of the message shared area in pages */
+#define SYNCHRONIC_DMA_TABLES_AREA_SIZE_BYTES (1024 * 5)
+
+/* Placeholder until driver changes */
+#define SEP_DRIVER_FLOW_DMA_TABLES_AREA_SIZE_IN_BYTES (1024 * 4)
+
+/* system data (time, caller id etc') pool */
+#define SEP_DRIVER_SYSTEM_DATA_MEMORY_SIZE_IN_BYTES (1024 * 3)
+
+/* the size in bytes of the time memory */
+#define SEP_DRIVER_TIME_MEMORY_SIZE_IN_BYTES 8
+
+/* the size in bytes of the RAR parameters memory */
+#define SEP_DRIVER_SYSTEM_RAR_MEMORY_SIZE_IN_BYTES 8
+
+/* area size that is mapped - we map the MESSAGE AREA, STATIC POOL and
+ DATA POOL areas. area must be module 4k */
+#define SEP_DRIVER_MMMAP_AREA_SIZE (1024 * 28)
+
+/*-----------------------------------------------
+ offsets of the areas starting from the shared area start address
+*/
+
+/* message area offset */
+#define SEP_DRIVER_MESSAGE_AREA_OFFSET_IN_BYTES 0
+
+/* static pool area offset */
+#define SEP_DRIVER_STATIC_AREA_OFFSET_IN_BYTES \
+ (SEP_DRIVER_MESSAGE_SHARED_AREA_SIZE_IN_BYTES)
+
+/* data pool area offset */
+#define SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES \
+ (SEP_DRIVER_STATIC_AREA_OFFSET_IN_BYTES + \
+ SEP_DRIVER_STATIC_AREA_SIZE_IN_BYTES)
+
+/* synhronic dma tables area offset */
+#define SYNCHRONIC_DMA_TABLES_AREA_OFFSET_BYTES \
+ (SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES + \
+ SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES)
+
+/* system memory offset in bytes */
+#define SEP_DRIVER_SYSTEM_DATA_MEMORY_OFFSET_IN_BYTES \
+ (SYNCHRONIC_DMA_TABLES_AREA_OFFSET_BYTES + \
+ SYNCHRONIC_DMA_TABLES_AREA_SIZE_BYTES)
+
+/* offset of the time area */
+#define SEP_DRIVER_SYSTEM_TIME_MEMORY_OFFSET_IN_BYTES \
+ (SEP_DRIVER_SYSTEM_DATA_MEMORY_OFFSET_IN_BYTES)
+
+/* offset of the RAR area */
+#define SEP_DRIVER_SYSTEM_RAR_MEMORY_OFFSET_IN_BYTES \
+ (SEP_DRIVER_SYSTEM_TIME_MEMORY_OFFSET_IN_BYTES + \
+ SEP_DRIVER_TIME_MEMORY_SIZE_IN_BYTES)
+
+/* offset of the caller id area */
+#define SEP_CALLER_ID_OFFSET_BYTES \
+ (SEP_DRIVER_SYSTEM_RAR_MEMORY_OFFSET_IN_BYTES + \
+ SEP_DRIVER_SYSTEM_RAR_MEMORY_SIZE_IN_BYTES)
+
+/* offset of the DCB area */
+#define SEP_DRIVER_SYSTEM_DCB_MEMORY_OFFSET_IN_BYTES \
+ (SEP_DRIVER_SYSTEM_DATA_MEMORY_OFFSET_IN_BYTES + \
+ 0x400)
+
+/* offset of the ext cache area */
+#define SEP_DRIVER_SYSTEM_EXT_CACHE_ADDR_OFFSET_IN_BYTES \
+ SEP_DRIVER_SYSTEM_RAR_MEMORY_OFFSET_IN_BYTES
+
+/* offset of the allocation data pointer area */
+#define SEP_DRIVER_DATA_POOL_ALLOCATION_OFFSET_IN_BYTES \
+ (SEP_CALLER_ID_OFFSET_BYTES + \
+ SEP_CALLER_ID_HASH_SIZE_IN_BYTES)
+
+/* the token that defines the start of time address */
+#define SEP_TIME_VAL_TOKEN 0x12345678
+
+#define FAKE_RAR_SIZE (1024*1024) /* used only for mfld */
+/* DEBUG LEVEL MASKS */
+
+/* size of the caller id hash (sha2) */
+#define SEP_CALLER_ID_HASH_SIZE_IN_BYTES 32
+
+/* maximum number of entries in the caller id table */
+#define SEP_CALLER_ID_TABLE_NUM_ENTRIES 20
+
+/* maximum number of symetric operation (that require DMA resource)
+ per one message */
+#define SEP_MAX_NUM_SYNC_DMA_OPS 16
+
+/* the token that defines the start of time address */
+#define SEP_RAR_VAL_TOKEN 0xABABABAB
+
+/* ioctl error that should be returned when trying
+ to realloc the cache/resident second time */
+#define SEP_ALREADY_INITIALIZED_ERR 12
+
+/* bit that locks access to the shared area */
+#define SEP_MMAP_LOCK_BIT 0
+
+/* bit that lock access to the poll - after send_command */
+#define SEP_SEND_MSG_LOCK_BIT 1
+
+/* the token that defines the static pool address address */
+#define SEP_STATIC_POOL_VAL_TOKEN 0xABBAABBA
+
+/* the token that defines the data pool pointers address */
+#define SEP_DATA_POOL_POINTERS_VAL_TOKEN 0xEDDEEDDE
+
+/* the token that defines the data pool pointers address */
+#define SEP_EXT_CACHE_ADDR_VAL_TOKEN 0xBABABABA
+
+/* rar handler */
+#ifndef CONFIG_MRST_RAR_HANDLER
+
+/* This stub header is for non Moorestown driver only */
+
+/*
+ * Constants that specify different kinds of RAR regions that could be
+ * set up.
+ */
+static __u32 const RAR_TYPE_VIDEO; /* 0 */
+static __u32 const RAR_TYPE_AUDIO = 1;
+static __u32 const RAR_TYPE_IMAGE = 2;
+static __u32 const RAR_TYPE_DATA = 3;
+
+/*
+ * @struct RAR_stat
+ *
+ * @brief This structure is used for @c RAR_HANDLER_STAT ioctl and for
+ * @c RAR_get_stat() user space wrapper function.
+ */
+struct RAR_stat {
+ /* Type of RAR memory (e.g., audio vs. video) */
+ __u32 type;
+
+ /*
+ * Total size of RAR memory region.
+ */
+ __u32 capacity;
+
+ /* Size of the largest reservable block. */
+ __u32 largest_block_size;
+};
+
+
+/*
+ * @struct RAR_block_info
+ *
+ * @brief The argument for the @c RAR_HANDLER_RESERVE @c ioctl.
+ *
+ */
+struct RAR_block_info {
+ /* Type of RAR memory (e.g., audio vs. video) */
+ __u32 type;
+
+ /* Requested size of a block to be reserved in RAR. */
+ __u32 size;
+
+ /* Handle that can be used to refer to reserved block. */
+ __u32 handle;
+};
+
+/*
+ * @struct RAR_buffer
+ *
+ * Structure that contains all information related to a given block of
+ * memory in RAR. It is generally only used when retrieving bus
+ * addresses.
+ *
+ * @note This structure is used only by RAR-enabled drivers, and is
+ * not intended to be exposed to the user space.
+ */
+struct RAR_buffer {
+ /* Structure containing base RAR buffer information */
+ struct RAR_block_info info;
+
+ /* Buffer bus address */
+ __u32 bus_address;
+};
+
+
+#define RAR_IOCTL_BASE 0xE0
+
+/* Reserve RAR block. */
+#define RAR_HANDLER_RESERVE _IOWR(RAR_IOCTL_BASE, 0x00, struct RAR_block_info)
+
+/* Release previously reserved RAR block. */
+#define RAR_HANDLER_RELEASE _IOW(RAR_IOCTL_BASE, 0x01, __u32)
+
+/* Get RAR stats. */
+#define RAR_HANDLER_STAT _IOWR(RAR_IOCTL_BASE, 0x02, struct RAR_stat)
+
+
+/* -------------------------------------------------------------- */
+/* Kernel Side RAR Handler Interface */
+/* -------------------------------------------------------------- */
+
+/*
+ * @function rar_reserve
+ *
+ * @brief Reserve RAR buffers.
+ *
+ * This function will reserve buffers in the restricted access regions
+ * of given types.
+ *
+ * @return Number of successfully reserved buffers.
+ * Successful buffer reservations will have the corresponding
+ * @c bus_address field set to a non-zero value in the
+ * given @a buffers vector.
+ */
+#define rar_reserve(a, b) ((size_t)NULL)
+
+/*
+ * @function rar_release
+ *
+ * @brief Release RAR buffers retrieved through call to
+ * @c rar_reserve() or @c rar_handle_to_bus().
+ *
+ * This function will release RAR buffers that were retrieved through
+ * a call to @c rar_reserve() or @c rar_handle_to_bus() by
+ * decrementing the reference count. The RAR buffer will be reclaimed
+ * when the reference count drops to zero.
+ *
+ * @return Number of successfully released buffers.
+ * Successful releases will have their handle field set to
+ * zero in the given @a buffers vector.
+ */
+#define rar_release(a, b) ((size_t)NULL)
+
+/*
+ * @function rar_handle_to_bus
+ *
+ * @brief Convert a vector of RAR handles to bus addresses.
+ *
+ * This function will retrieve the RAR buffer bus addresses, type and
+ * size corresponding to the RAR handles provided in the @a buffers
+ * vector.
+ *
+ * @return Number of successfully converted buffers.
+ * The bus address will be set to @c 0 for unrecognized
+ * handles.
+ *
+ * @note The reference count for each corresponding buffer in RAR will
+ * be incremented. Call @c rar_release() when done with the
+ * buffers.
+ */
+#define rar_handle_to_bus(a, b) ((size_t)NULL)
+
+#else /* using rear memrar */
+
+#include "../memrar/memrar.h"
+
+#endif /* MEMRAR */
+
+/* rar_register */
+#ifndef CONFIG_RAR_REGISTER
+/* This stub header is for non Moorestown driver only */
+
+/* The register_rar function is to used by other device drivers
+ * to ensure that this driver is ready. As we cannot be sure of
+ * the compile/execute order of dirvers in ther kernel, it is
+ * best to give this driver a callback function to call when
+ * it is ready to give out addresses. The callback function
+ * would have those steps that continue the initialization of
+ * a driver that do require a valid RAR address. One of those
+ * steps would be to call get_rar_address()
+ * This function return 0 on success an -1 on failure.
+ */
+#define register_rar(a, b, c) (-ENODEV)
+
+/* The get_rar_address function is used by other device drivers
+ * to obtain RAR address information on a RAR. It takes two
+ * parameter:
+ *
+ * int rar_index
+ * The rar_index is an index to the rar for which you wish to retrieve
+ * the address information.
+ * Values can be 0,1, or 2.
+ *
+ * struct RAR_address_struct is a pointer to a place to which the function
+ * can return the address structure for the RAR.
+ *
+ * The function returns a 0 upon success or a -1 if there is no RAR
+ * facility on this system.
+ */
+#define rar_get_address(a, b, c) (-ENODEV)
+
+/* The lock_rar function is ued by other device drivers to lock an RAR.
+ * once an RAR is locked, it stays locked until the next system reboot.
+ * The function takes one parameter:
+ *
+ * int rar_index
+ * The rar_index is an index to the rar that you want to lock.
+ * Values can be 0,1, or 2.
+ *
+ * The function returns a 0 upon success or a -1 if there is no RAR
+ * facility on this system.
+ */
+#define rar_lock(a) (-1)
+
+#else /* using real RAR_REGISTER */
+
+#include "../rar_register/rar_register.h"
+
+#endif /* CONFIG_RAR_REGISTER */
+
+#endif /* SEP DRIVER CONFIG */
diff --git a/drivers/staging/sep/sep_driver_hw_defs.h b/drivers/staging/sep/sep_driver_hw_defs.h
new file mode 100644
index 0000000..29addd7
--- /dev/null
+++ b/drivers/staging/sep/sep_driver_hw_defs.h
@@ -0,0 +1,234 @@
+/*
+ *
+ * sep_driver_hw_defs.h - Security Processor Driver hardware definitions
+ *
+ * Copyright(c) 2009,2010 Intel Corporation. All rights reserved.
+ * Contributions(c) 2009,2010 Discretix. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59
+ * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * CONTACTS:
+ *
+ * Mark Allyn [email protected]
+ * Jayant Mangalampalli [email protected]
+ *
+ * CHANGES:
+ *
+ * 2010.09.20 Upgrade to Medfield
+ *
+ */
+
+#ifndef SEP_DRIVER_HW_DEFS__H
+#define SEP_DRIVER_HW_DEFS__H
+
+/* PCI ID's */
+#define MRST_PCI_DEVICE_ID 0x080c
+#define MFLD_PCI_DEVICE_ID 0x0826
+
+/*----------------------- */
+/* HW Registers Defines. */
+/* */
+/*---------------------- -*/
+
+
+/* cf registers */
+#define HW_R0B_ADDR_0_REG_ADDR 0x0000UL
+#define HW_R0B_ADDR_1_REG_ADDR 0x0004UL
+#define HW_R0B_ADDR_2_REG_ADDR 0x0008UL
+#define HW_R0B_ADDR_3_REG_ADDR 0x000cUL
+#define HW_R0B_ADDR_4_REG_ADDR 0x0010UL
+#define HW_R0B_ADDR_5_REG_ADDR 0x0014UL
+#define HW_R0B_ADDR_6_REG_ADDR 0x0018UL
+#define HW_R0B_ADDR_7_REG_ADDR 0x001cUL
+#define HW_R0B_ADDR_8_REG_ADDR 0x0020UL
+#define HW_R2B_ADDR_0_REG_ADDR 0x0080UL
+#define HW_R2B_ADDR_1_REG_ADDR 0x0084UL
+#define HW_R2B_ADDR_2_REG_ADDR 0x0088UL
+#define HW_R2B_ADDR_3_REG_ADDR 0x008cUL
+#define HW_R2B_ADDR_4_REG_ADDR 0x0090UL
+#define HW_R2B_ADDR_5_REG_ADDR 0x0094UL
+#define HW_R2B_ADDR_6_REG_ADDR 0x0098UL
+#define HW_R2B_ADDR_7_REG_ADDR 0x009cUL
+#define HW_R2B_ADDR_8_REG_ADDR 0x00a0UL
+#define HW_R3B_REG_ADDR 0x00C0UL
+#define HW_R4B_REG_ADDR 0x0100UL
+#define HW_CSA_ADDR_0_REG_ADDR 0x0140UL
+#define HW_CSA_ADDR_1_REG_ADDR 0x0144UL
+#define HW_CSA_ADDR_2_REG_ADDR 0x0148UL
+#define HW_CSA_ADDR_3_REG_ADDR 0x014cUL
+#define HW_CSA_ADDR_4_REG_ADDR 0x0150UL
+#define HW_CSA_ADDR_5_REG_ADDR 0x0154UL
+#define HW_CSA_ADDR_6_REG_ADDR 0x0158UL
+#define HW_CSA_ADDR_7_REG_ADDR 0x015cUL
+#define HW_CSA_ADDR_8_REG_ADDR 0x0160UL
+#define HW_CSA_REG_ADDR 0x0140UL
+#define HW_SINB_REG_ADDR 0x0180UL
+#define HW_SOUTB_REG_ADDR 0x0184UL
+#define HW_PKI_CONTROL_REG_ADDR 0x01C0UL
+#define HW_PKI_STATUS_REG_ADDR 0x01C4UL
+#define HW_PKI_BUSY_REG_ADDR 0x01C8UL
+#define HW_PKI_A_1025_REG_ADDR 0x01CCUL
+#define HW_PKI_SDMA_CTL_REG_ADDR 0x01D0UL
+#define HW_PKI_SDMA_OFFSET_REG_ADDR 0x01D4UL
+#define HW_PKI_SDMA_POINTERS_REG_ADDR 0x01D8UL
+#define HW_PKI_SDMA_DLENG_REG_ADDR 0x01DCUL
+#define HW_PKI_SDMA_EXP_POINTERS_REG_ADDR 0x01E0UL
+#define HW_PKI_SDMA_RES_POINTERS_REG_ADDR 0x01E4UL
+#define HW_PKI_CLR_REG_ADDR 0x01E8UL
+#define HW_PKI_SDMA_BUSY_REG_ADDR 0x01E8UL
+#define HW_PKI_SDMA_FIRST_EXP_N_REG_ADDR 0x01ECUL
+#define HW_PKI_SDMA_MUL_BY1_REG_ADDR 0x01F0UL
+#define HW_PKI_SDMA_RMUL_SEL_REG_ADDR 0x01F4UL
+#define HW_DES_KEY_0_REG_ADDR 0x0208UL
+#define HW_DES_KEY_1_REG_ADDR 0x020CUL
+#define HW_DES_KEY_2_REG_ADDR 0x0210UL
+#define HW_DES_KEY_3_REG_ADDR 0x0214UL
+#define HW_DES_KEY_4_REG_ADDR 0x0218UL
+#define HW_DES_KEY_5_REG_ADDR 0x021CUL
+#define HW_DES_CONTROL_0_REG_ADDR 0x0220UL
+#define HW_DES_CONTROL_1_REG_ADDR 0x0224UL
+#define HW_DES_IV_0_REG_ADDR 0x0228UL
+#define HW_DES_IV_1_REG_ADDR 0x022CUL
+#define HW_AES_KEY_0_ADDR_0_REG_ADDR 0x0400UL
+#define HW_AES_KEY_0_ADDR_1_REG_ADDR 0x0404UL
+#define HW_AES_KEY_0_ADDR_2_REG_ADDR 0x0408UL
+#define HW_AES_KEY_0_ADDR_3_REG_ADDR 0x040cUL
+#define HW_AES_KEY_0_ADDR_4_REG_ADDR 0x0410UL
+#define HW_AES_KEY_0_ADDR_5_REG_ADDR 0x0414UL
+#define HW_AES_KEY_0_ADDR_6_REG_ADDR 0x0418UL
+#define HW_AES_KEY_0_ADDR_7_REG_ADDR 0x041cUL
+#define HW_AES_KEY_0_REG_ADDR 0x0400UL
+#define HW_AES_IV_0_ADDR_0_REG_ADDR 0x0440UL
+#define HW_AES_IV_0_ADDR_1_REG_ADDR 0x0444UL
+#define HW_AES_IV_0_ADDR_2_REG_ADDR 0x0448UL
+#define HW_AES_IV_0_ADDR_3_REG_ADDR 0x044cUL
+#define HW_AES_IV_0_REG_ADDR 0x0440UL
+#define HW_AES_CTR1_ADDR_0_REG_ADDR 0x0460UL
+#define HW_AES_CTR1_ADDR_1_REG_ADDR 0x0464UL
+#define HW_AES_CTR1_ADDR_2_REG_ADDR 0x0468UL
+#define HW_AES_CTR1_ADDR_3_REG_ADDR 0x046cUL
+#define HW_AES_CTR1_REG_ADDR 0x0460UL
+#define HW_AES_SK_REG_ADDR 0x0478UL
+#define HW_AES_MAC_OK_REG_ADDR 0x0480UL
+#define HW_AES_PREV_IV_0_ADDR_0_REG_ADDR 0x0490UL
+#define HW_AES_PREV_IV_0_ADDR_1_REG_ADDR 0x0494UL
+#define HW_AES_PREV_IV_0_ADDR_2_REG_ADDR 0x0498UL
+#define HW_AES_PREV_IV_0_ADDR_3_REG_ADDR 0x049cUL
+#define HW_AES_PREV_IV_0_REG_ADDR 0x0490UL
+#define HW_AES_CONTROL_REG_ADDR 0x04C0UL
+#define HW_HASH_H0_REG_ADDR 0x0640UL
+#define HW_HASH_H1_REG_ADDR 0x0644UL
+#define HW_HASH_H2_REG_ADDR 0x0648UL
+#define HW_HASH_H3_REG_ADDR 0x064CUL
+#define HW_HASH_H4_REG_ADDR 0x0650UL
+#define HW_HASH_H5_REG_ADDR 0x0654UL
+#define HW_HASH_H6_REG_ADDR 0x0658UL
+#define HW_HASH_H7_REG_ADDR 0x065CUL
+#define HW_HASH_H8_REG_ADDR 0x0660UL
+#define HW_HASH_H9_REG_ADDR 0x0664UL
+#define HW_HASH_H10_REG_ADDR 0x0668UL
+#define HW_HASH_H11_REG_ADDR 0x066CUL
+#define HW_HASH_H12_REG_ADDR 0x0670UL
+#define HW_HASH_H13_REG_ADDR 0x0674UL
+#define HW_HASH_H14_REG_ADDR 0x0678UL
+#define HW_HASH_H15_REG_ADDR 0x067CUL
+#define HW_HASH_CONTROL_REG_ADDR 0x07C0UL
+#define HW_HASH_PAD_EN_REG_ADDR 0x07C4UL
+#define HW_HASH_PAD_CFG_REG_ADDR 0x07C8UL
+#define HW_HASH_CUR_LEN_0_REG_ADDR 0x07CCUL
+#define HW_HASH_CUR_LEN_1_REG_ADDR 0x07D0UL
+#define HW_HASH_CUR_LEN_2_REG_ADDR 0x07D4UL
+#define HW_HASH_CUR_LEN_3_REG_ADDR 0x07D8UL
+#define HW_HASH_PARAM_REG_ADDR 0x07DCUL
+#define HW_HASH_INT_BUSY_REG_ADDR 0x07E0UL
+#define HW_HASH_SW_RESET_REG_ADDR 0x07E4UL
+#define HW_HASH_ENDIANESS_REG_ADDR 0x07E8UL
+#define HW_HASH_DATA_REG_ADDR 0x07ECUL
+#define HW_DRNG_CONTROL_REG_ADDR 0x0800UL
+#define HW_DRNG_VALID_REG_ADDR 0x0804UL
+#define HW_DRNG_DATA_REG_ADDR 0x0808UL
+#define HW_RND_SRC_EN_REG_ADDR 0x080CUL
+#define HW_AES_CLK_ENABLE_REG_ADDR 0x0810UL
+#define HW_DES_CLK_ENABLE_REG_ADDR 0x0814UL
+#define HW_HASH_CLK_ENABLE_REG_ADDR 0x0818UL
+#define HW_PKI_CLK_ENABLE_REG_ADDR 0x081CUL
+#define HW_CLK_STATUS_REG_ADDR 0x0824UL
+#define HW_CLK_ENABLE_REG_ADDR 0x0828UL
+#define HW_DRNG_SAMPLE_REG_ADDR 0x0850UL
+#define HW_RND_SRC_CTL_REG_ADDR 0x0858UL
+#define HW_CRYPTO_CTL_REG_ADDR 0x0900UL
+#define HW_CRYPTO_STATUS_REG_ADDR 0x090CUL
+#define HW_CRYPTO_BUSY_REG_ADDR 0x0910UL
+#define HW_AES_BUSY_REG_ADDR 0x0914UL
+#define HW_DES_BUSY_REG_ADDR 0x0918UL
+#define HW_HASH_BUSY_REG_ADDR 0x091CUL
+#define HW_CONTENT_REG_ADDR 0x0924UL
+#define HW_VERSION_REG_ADDR 0x0928UL
+#define HW_CONTEXT_ID_REG_ADDR 0x0930UL
+#define HW_DIN_BUFFER_REG_ADDR 0x0C00UL
+#define HW_DIN_MEM_DMA_BUSY_REG_ADDR 0x0c20UL
+#define HW_SRC_LLI_MEM_ADDR_REG_ADDR 0x0c24UL
+#define HW_SRC_LLI_WORD0_REG_ADDR 0x0C28UL
+#define HW_SRC_LLI_WORD1_REG_ADDR 0x0C2CUL
+#define HW_SRAM_SRC_ADDR_REG_ADDR 0x0c30UL
+#define HW_DIN_SRAM_BYTES_LEN_REG_ADDR 0x0c34UL
+#define HW_DIN_SRAM_DMA_BUSY_REG_ADDR 0x0C38UL
+#define HW_WRITE_ALIGN_REG_ADDR 0x0C3CUL
+#define HW_OLD_DATA_REG_ADDR 0x0C48UL
+#define HW_WRITE_ALIGN_LAST_REG_ADDR 0x0C4CUL
+#define HW_DOUT_BUFFER_REG_ADDR 0x0C00UL
+#define HW_DST_LLI_WORD0_REG_ADDR 0x0D28UL
+#define HW_DST_LLI_WORD1_REG_ADDR 0x0D2CUL
+#define HW_DST_LLI_MEM_ADDR_REG_ADDR 0x0D24UL
+#define HW_DOUT_MEM_DMA_BUSY_REG_ADDR 0x0D20UL
+#define HW_SRAM_DEST_ADDR_REG_ADDR 0x0D30UL
+#define HW_DOUT_SRAM_BYTES_LEN_REG_ADDR 0x0D34UL
+#define HW_DOUT_SRAM_DMA_BUSY_REG_ADDR 0x0D38UL
+#define HW_READ_ALIGN_REG_ADDR 0x0D3CUL
+#define HW_READ_LAST_DATA_REG_ADDR 0x0D44UL
+#define HW_RC4_THRU_CPU_REG_ADDR 0x0D4CUL
+#define HW_AHB_SINGLE_REG_ADDR 0x0E00UL
+#define HW_SRAM_DATA_REG_ADDR 0x0F00UL
+#define HW_SRAM_ADDR_REG_ADDR 0x0F04UL
+#define HW_SRAM_DATA_READY_REG_ADDR 0x0F08UL
+#define HW_HOST_IRR_REG_ADDR 0x0A00UL
+#define HW_HOST_IMR_REG_ADDR 0x0A04UL
+#define HW_HOST_ICR_REG_ADDR 0x0A08UL
+#define HW_HOST_SEP_SRAM_THRESHOLD_REG_ADDR 0x0A10UL
+#define HW_HOST_SEP_BUSY_REG_ADDR 0x0A14UL
+#define HW_HOST_SEP_LCS_REG_ADDR 0x0A18UL
+#define HW_HOST_CC_SW_RST_REG_ADDR 0x0A40UL
+#define HW_HOST_SEP_SW_RST_REG_ADDR 0x0A44UL
+#define HW_HOST_FLOW_DMA_SW_INT0_REG_ADDR 0x0A80UL
+#define HW_HOST_FLOW_DMA_SW_INT1_REG_ADDR 0x0A84UL
+#define HW_HOST_FLOW_DMA_SW_INT2_REG_ADDR 0x0A88UL
+#define HW_HOST_FLOW_DMA_SW_INT3_REG_ADDR 0x0A8cUL
+#define HW_HOST_FLOW_DMA_SW_INT4_REG_ADDR 0x0A90UL
+#define HW_HOST_FLOW_DMA_SW_INT5_REG_ADDR 0x0A94UL
+#define HW_HOST_FLOW_DMA_SW_INT6_REG_ADDR 0x0A98UL
+#define HW_HOST_FLOW_DMA_SW_INT7_REG_ADDR 0x0A9cUL
+#define HW_HOST_SEP_HOST_GPR0_REG_ADDR 0x0B00UL
+#define HW_HOST_SEP_HOST_GPR1_REG_ADDR 0x0B04UL
+#define HW_HOST_SEP_HOST_GPR2_REG_ADDR 0x0B08UL
+#define HW_HOST_SEP_HOST_GPR3_REG_ADDR 0x0B0CUL
+#define HW_HOST_HOST_SEP_GPR0_REG_ADDR 0x0B80UL
+#define HW_HOST_HOST_SEP_GPR1_REG_ADDR 0x0B84UL
+#define HW_HOST_HOST_SEP_GPR2_REG_ADDR 0x0B88UL
+#define HW_HOST_HOST_SEP_GPR3_REG_ADDR 0x0B8CUL
+#define HW_HOST_HOST_ENDIAN_REG_ADDR 0x0B90UL
+#define HW_HOST_HOST_COMM_CLK_EN_REG_ADDR 0x0B94UL
+#define HW_CLR_SRAM_BUSY_REG_REG_ADDR 0x0F0CUL
+#define HW_CC_SRAM_BASE_ADDRESS 0x5800UL
+
+#endif /* ifndef HW_DEFS */
--
1.6.3.3

2010-11-20 01:42:26

by Greg KH

Subject: Re: [PATCH 1/1] sep: Introduce sep driver

On Wed, Nov 17, 2010 at 03:45:36PM -0800, Mark Allyn wrote:
> This driver is for the Security Processor, a dedicated encryption
> and decryption driver that is used on the Intel mobile platform.
>
> This has been checked with checkpatch and there are four
> warnings for lines over 80 charactors.
>
> There is one compile warning. This is for a function that is
> only used if the rar register driver is needed. There is an
> ifdef in a header file that stubs out the rar register driver
> if the rar register is not configured.
>
> This patch is referenced off of next-20101117.
>

Minor comment:

> --- /dev/null
> +++ b/drivers/staging/sep/TODO
> @@ -0,0 +1,12 @@
> +Todo's so far (from Alan Cox)
> +- Fix firmware loading - Done 09/10 M. Allyn
> +- Get firmware into firmware git tree - Firmware is non open source
> +- Review and tidy each algorithm function - Done 09/10 M. Allyn
> +- Check whether it can be plugged into any of the kernel crypto API
> + interfaces - Crypto API 'glue' is still not ready to submit
> +- Do something about the magic shared memory interface and replace it
> + with something saner (in Linux terms) - Done 09/10 M. Allyn
> +- Clean up unused ioctls - Needs vendor help
> +- Clean up unused fields in ioctl structures - Needs vendor help
> +- 64 bit size to be used for all user space addresses passed
> + to ioctl - Done 10/10 M. Allyn

Remove entries in the TODO file that you have finished, only list what
needs to be done.

Also, please put your email address in the file for who to send patches
to for this driver, like the other TODO files in the
drivers/staging/*/TODO files have.

Care to send a follow-on patch for these minor changes?

thanks,

greg k-h

2010-11-20 01:47:05

by Greg KH

Subject: Re: [PATCH 1/1] Staging: sep: Introduce sep driver

On Wed, Nov 17, 2010 at 03:45:36PM -0800, Mark Allyn wrote:
> This driver is for the Security Processor, a dedicated encryption
> and decryption driver that is used on the Intel mobile platform.
>
> This has been checked with checkpatch and there are four
> warnings for lines over 80 charactors.
>
> There is one compile warning. This is for a function that is
> only used if the rar register driver is needed. There is an
> ifdef in a header file that stubs out the rar register driver
> if the rar register is not configured.
>
> This driver does add a configuration, which is CONFIG_DX_SEP.

Also, this driver spits out a _lot_ of compiler warnings on x86-64.
Please fix that now before someone else starts yelling at you...

thanks,

greg k-h

2010-11-20 12:40:21

by Alan

Subject: Re: [PATCH 1/1] sep: Introduce sep driver

> +/* rar handler */
> +#ifndef CONFIG_MRST_RAR_HANDLER
> +
> +/* This stub header is for non Moorestown driver only */

What happened to the patches I sent you a while back that cleaned this
one up ?

2010-11-20 16:29:40

by Greg KH

Subject: Re: [PATCH 1/1] sep: Introduce sep driver

On Sat, Nov 20, 2010 at 12:39:11PM +0000, Alan Cox wrote:
>
>
> > +/* rar handler */
> > +#ifndef CONFIG_MRST_RAR_HANDLER
> > +
> > +/* This stub header is for non Moorestown driver only */
>
> What happened to the patches I sent you a while back that cleaned this
> one up ?

Wait, this isn't the cleaned up version? Ick, should I just drop it and
wait for a working one instead? Or Mark, are you going to fix this one
up for real this time?

thanks,

greg k-h

2010-11-21 14:09:05

by Alan

Subject: Re: [PATCH 1/1] sep: Introduce sep driver

On Sat, 20 Nov 2010 08:27:26 -0800
Greg KH <[email protected]> wrote:

> On Sat, Nov 20, 2010 at 12:39:11PM +0000, Alan Cox wrote:
> >
> >
> > > +/* rar handler */
> > > +#ifndef CONFIG_MRST_RAR_HANDLER
> > > +
> > > +/* This stub header is for non Moorestown driver only */
> >
> > What happened to the patches I sent you a while back that cleaned this
> > one up ?
>
> Wait, this isn't the cleaned up version? Ick, should I just drop it and
> wait for a working one instead? Or Mark, are you going to fix this one
> up for real this time?

I sent Mark a set of follow on patches. Dunno if they got lost in part or
not. No big deal as they applied on top of his previous set so can just
be applied as a follow up to the merge.

So I'd rather you carried on merging them and we'll figure out which of
the other bits need dropping on top.

Alan

2010-11-21 17:28:24

by Greg KH

Subject: Re: [PATCH 1/1] sep: Introduce sep driver

On Sun, Nov 21, 2010 at 02:07:57PM +0000, Alan Cox wrote:
> On Sat, 20 Nov 2010 08:27:26 -0800
> Greg KH <[email protected]> wrote:
>
> > On Sat, Nov 20, 2010 at 12:39:11PM +0000, Alan Cox wrote:
> > >
> > >
> > > > +/* rar handler */
> > > > +#ifndef CONFIG_MRST_RAR_HANDLER
> > > > +
> > > > +/* This stub header is for non Moorestown driver only */
> > >
> > > What happened to the patches I sent you a while back that cleaned this
> > > one up ?
> >
> > Wait, this isn't the cleaned up version? Ick, should I just drop it and
> > wait for a working one instead? Or Mark, are you going to fix this one
> > up for real this time?
>
> I sent Mark a set of follow on patches. Dunno if they got lost in part or
> not. No big deal as they applied on top of his previous set so can just
> be applied as a follow up to the merge.
>
> So I'd rather you carried on merging them and we'll figure out which of
> the other bits need dropping on top.

Ok, it's in the tree now, but again, it has a ton of build warnings that
should be fixed before I start to get angry emails from Randy about it
:)

thanks,

greg k-h