[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/os/linux/linux-3.4.x/drivers/uio/Kconfig b/ap/os/linux/linux-3.4.x/drivers/uio/Kconfig
new file mode 100644
index 0000000..6f3ea9b
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/uio/Kconfig
@@ -0,0 +1,114 @@
+menuconfig UIO
+ tristate "Userspace I/O drivers"
+ depends on !S390
+ help
+ Enable this to allow the userspace driver core code to be
+ built. This code allows userspace programs easy access to
+ kernel interrupts and memory locations, allowing some drivers
+ to be written in userspace. Note that a small kernel driver
+ is also required for interrupt handling to work properly.
+
+ If you don't know what to do here, say N.
+
+if UIO
+
+config UIO_CIF
+ tristate "generic Hilscher CIF Card driver"
+ depends on PCI
+ help
+ Driver for Hilscher CIF DeviceNet and Profibus cards. This
+ driver requires a userspace component called cif that handles
+ all of the heavy lifting and can be found at:
+ <http://www.osadl.org/projects/downloads/UIO/user/>
+
+ To compile this driver as a module, choose M here: the module
+ will be called uio_cif.
+
+config UIO_PDRV
+ tristate "Userspace I/O platform driver"
+ help
+ Generic platform driver for Userspace I/O devices.
+
+ If you don't know what to do here, say N.
+
+config UIO_PDRV_GENIRQ
+ tristate "Userspace I/O platform driver with generic IRQ handling"
+ help
+ Platform driver for Userspace I/O devices, including generic
+ interrupt handling code. Shared interrupts are not supported.
+
+ This kernel driver requires that the matching userspace driver
+ handles interrupts in a special way. Userspace is responsible
+ for acknowledging the hardware device if needed, and re-enabling
+ interrupts in the interrupt controller using the write() syscall.
+
+ If you don't know what to do here, say N.
+
+config UIO_AEC
+ tristate "AEC video timestamp device"
+ depends on PCI
+ help
+
+ UIO driver for the Adrienne Electronics Corporation PCI time
+ code device.
+
+ This device differs from other UIO devices since it uses I/O
+ ports instead of memory mapped I/O. In order to make it
+ possible for UIO to work with this device a utility, uioport,
+ can be used to read and write the ports:
+
+ git clone git://ifup.org/philips/uioport.git
+
+ If you compile this as a module, it will be called uio_aec.
+
+config UIO_SERCOS3
+ tristate "Automata Sercos III PCI card driver"
+ depends on PCI
+ help
+ Userspace I/O interface for the Sercos III PCI card from
+ Automata GmbH. The userspace part of this driver will be
+ available for download from the Automata GmbH web site.
+
+ Automata GmbH: http://www.automataweb.com
+ Sercos III interface: http://www.sercos.com
+
+ If you compile this as a module, it will be called uio_sercos3.
+
+config UIO_PCI_GENERIC
+ tristate "Generic driver for PCI 2.3 and PCI Express cards"
+ depends on PCI
+ help
+ Generic driver that you can bind, dynamically, to any
+ PCI 2.3 compliant and PCI Express card. It is useful,
+ primarily, for virtualization scenarios.
+ If you compile this as a module, it will be called uio_pci_generic.
+
+config UIO_NETX
+ tristate "Hilscher NetX Card driver"
+ depends on PCI
+ help
+ Driver for Hilscher NetX based fieldbus cards (cifX, comX).
+ This driver requires a userspace component that comes with the card
+ or is available from Hilscher (http://www.hilscher.com).
+
+ To compile this driver as a module, choose M here; the module
+ will be called uio_netx.
+
+config UIO_PRUSS
+ tristate "Texas Instruments PRUSS driver"
+ depends on ARCH_DAVINCI_DA850
+ help
+ PRUSS driver for OMAPL138/DA850/AM18XX devices
+ PRUSS driver requires user space components, examples and user space
+ driver is available from below SVN repo - you may use anonymous login
+
+ https://gforge.ti.com/gf/project/pru_sw/
+
+ More info on API is available at below wiki
+
+ http://processors.wiki.ti.com/index.php/PRU_Linux_Application_Loader
+
+ To compile this driver as a module, choose M here: the module
+ will be called uio_pruss.
+
+endif
diff --git a/ap/os/linux/linux-3.4.x/drivers/uio/Makefile b/ap/os/linux/linux-3.4.x/drivers/uio/Makefile
new file mode 100644
index 0000000..d4dd9a5
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/uio/Makefile
@@ -0,0 +1,9 @@
+obj-$(CONFIG_UIO) += uio.o
+obj-$(CONFIG_UIO_CIF) += uio_cif.o
+obj-$(CONFIG_UIO_PDRV) += uio_pdrv.o
+obj-$(CONFIG_UIO_PDRV_GENIRQ) += uio_pdrv_genirq.o
+obj-$(CONFIG_UIO_AEC) += uio_aec.o
+obj-$(CONFIG_UIO_SERCOS3) += uio_sercos3.o
+obj-$(CONFIG_UIO_PCI_GENERIC) += uio_pci_generic.o
+obj-$(CONFIG_UIO_NETX) += uio_netx.o
+obj-$(CONFIG_UIO_PRUSS) += uio_pruss.o
diff --git a/ap/os/linux/linux-3.4.x/drivers/uio/uio.c b/ap/os/linux/linux-3.4.x/drivers/uio/uio.c
new file mode 100644
index 0000000..7150752
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/uio/uio.c
@@ -0,0 +1,921 @@
+/*
+ * drivers/uio/uio.c
+ *
+ * Copyright(C) 2005, Benedikt Spranger <b.spranger@linutronix.de>
+ * Copyright(C) 2005, Thomas Gleixner <tglx@linutronix.de>
+ * Copyright(C) 2006, Hans J. Koch <hjk@hansjkoch.de>
+ * Copyright(C) 2006, Greg Kroah-Hartman <greg@kroah.com>
+ *
+ * Userspace IO
+ *
+ * Base Functions
+ *
+ * Licensed under the GPLv2 only.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/poll.h>
+#include <linux/device.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/idr.h>
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <linux/kobject.h>
+#include <linux/cdev.h>
+#include <linux/uio_driver.h>
+
+#define UIO_MAX_DEVICES (1U << MINORBITS)
+
+struct uio_device {
+ struct module *owner;
+ struct device *dev;
+ int minor;
+ atomic_t event;
+ struct fasync_struct *async_queue;
+ wait_queue_head_t wait;
+ int vma_count;
+ struct uio_info *info;
+ struct kobject *map_dir;
+ struct kobject *portio_dir;
+};
+
+static int uio_major;
+static struct cdev *uio_cdev;
+static DEFINE_IDR(uio_idr);
+static const struct file_operations uio_fops;
+
+/* Protect idr accesses */
+static DEFINE_MUTEX(minor_lock);
+
+/*
+ * attributes
+ */
+
+struct uio_map {
+ struct kobject kobj;
+ struct uio_mem *mem;
+};
+#define to_map(map) container_of(map, struct uio_map, kobj)
+
+static ssize_t map_name_show(struct uio_mem *mem, char *buf)
+{
+ if (unlikely(!mem->name))
+ mem->name = "";
+
+ return sprintf(buf, "%s\n", mem->name);
+}
+
+static ssize_t map_addr_show(struct uio_mem *mem, char *buf)
+{
+ return sprintf(buf, "0x%llx\n", (unsigned long long)mem->addr);
+}
+
+static ssize_t map_size_show(struct uio_mem *mem, char *buf)
+{
+ return sprintf(buf, "0x%lx\n", mem->size);
+}
+
+static ssize_t map_offset_show(struct uio_mem *mem, char *buf)
+{
+ return sprintf(buf, "0x%llx\n", (unsigned long long)mem->addr & ~PAGE_MASK);
+}
+
+struct map_sysfs_entry {
+ struct attribute attr;
+ ssize_t (*show)(struct uio_mem *, char *);
+ ssize_t (*store)(struct uio_mem *, const char *, size_t);
+};
+
+static struct map_sysfs_entry name_attribute =
+ __ATTR(name, S_IRUGO, map_name_show, NULL);
+static struct map_sysfs_entry addr_attribute =
+ __ATTR(addr, S_IRUGO, map_addr_show, NULL);
+static struct map_sysfs_entry size_attribute =
+ __ATTR(size, S_IRUGO, map_size_show, NULL);
+static struct map_sysfs_entry offset_attribute =
+ __ATTR(offset, S_IRUGO, map_offset_show, NULL);
+
+static struct attribute *attrs[] = {
+ &name_attribute.attr,
+ &addr_attribute.attr,
+ &size_attribute.attr,
+ &offset_attribute.attr,
+ NULL, /* need to NULL terminate the list of attributes */
+};
+
+static void map_release(struct kobject *kobj)
+{
+ struct uio_map *map = to_map(kobj);
+ kfree(map);
+}
+
+static ssize_t map_type_show(struct kobject *kobj, struct attribute *attr,
+ char *buf)
+{
+ struct uio_map *map = to_map(kobj);
+ struct uio_mem *mem = map->mem;
+ struct map_sysfs_entry *entry;
+
+ entry = container_of(attr, struct map_sysfs_entry, attr);
+
+ if (!entry->show)
+ return -EIO;
+
+ return entry->show(mem, buf);
+}
+
+static const struct sysfs_ops map_sysfs_ops = {
+ .show = map_type_show,
+};
+
+static struct kobj_type map_attr_type = {
+ .release = map_release,
+ .sysfs_ops = &map_sysfs_ops,
+ .default_attrs = attrs,
+};
+
+struct uio_portio {
+ struct kobject kobj;
+ struct uio_port *port;
+};
+#define to_portio(portio) container_of(portio, struct uio_portio, kobj)
+
+static ssize_t portio_name_show(struct uio_port *port, char *buf)
+{
+ if (unlikely(!port->name))
+ port->name = "";
+
+ return sprintf(buf, "%s\n", port->name);
+}
+
+static ssize_t portio_start_show(struct uio_port *port, char *buf)
+{
+ return sprintf(buf, "0x%lx\n", port->start);
+}
+
+static ssize_t portio_size_show(struct uio_port *port, char *buf)
+{
+ return sprintf(buf, "0x%lx\n", port->size);
+}
+
+static ssize_t portio_porttype_show(struct uio_port *port, char *buf)
+{
+ const char *porttypes[] = {"none", "x86", "gpio", "other"};
+
+ if ((port->porttype < 0) || (port->porttype > UIO_PORT_OTHER))
+ return -EINVAL;
+
+ return sprintf(buf, "port_%s\n", porttypes[port->porttype]);
+}
+
+struct portio_sysfs_entry {
+ struct attribute attr;
+ ssize_t (*show)(struct uio_port *, char *);
+ ssize_t (*store)(struct uio_port *, const char *, size_t);
+};
+
+static struct portio_sysfs_entry portio_name_attribute =
+ __ATTR(name, S_IRUGO, portio_name_show, NULL);
+static struct portio_sysfs_entry portio_start_attribute =
+ __ATTR(start, S_IRUGO, portio_start_show, NULL);
+static struct portio_sysfs_entry portio_size_attribute =
+ __ATTR(size, S_IRUGO, portio_size_show, NULL);
+static struct portio_sysfs_entry portio_porttype_attribute =
+ __ATTR(porttype, S_IRUGO, portio_porttype_show, NULL);
+
+static struct attribute *portio_attrs[] = {
+ &portio_name_attribute.attr,
+ &portio_start_attribute.attr,
+ &portio_size_attribute.attr,
+ &portio_porttype_attribute.attr,
+ NULL,
+};
+
+static void portio_release(struct kobject *kobj)
+{
+ struct uio_portio *portio = to_portio(kobj);
+ kfree(portio);
+}
+
+static ssize_t portio_type_show(struct kobject *kobj, struct attribute *attr,
+ char *buf)
+{
+ struct uio_portio *portio = to_portio(kobj);
+ struct uio_port *port = portio->port;
+ struct portio_sysfs_entry *entry;
+
+ entry = container_of(attr, struct portio_sysfs_entry, attr);
+
+ if (!entry->show)
+ return -EIO;
+
+ return entry->show(port, buf);
+}
+
+static const struct sysfs_ops portio_sysfs_ops = {
+ .show = portio_type_show,
+};
+
+static struct kobj_type portio_attr_type = {
+ .release = portio_release,
+ .sysfs_ops = &portio_sysfs_ops,
+ .default_attrs = portio_attrs,
+};
+
+static ssize_t show_name(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct uio_device *idev = dev_get_drvdata(dev);
+ return sprintf(buf, "%s\n", idev->info->name);
+}
+
+static ssize_t show_version(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct uio_device *idev = dev_get_drvdata(dev);
+ return sprintf(buf, "%s\n", idev->info->version);
+}
+
+static ssize_t show_event(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct uio_device *idev = dev_get_drvdata(dev);
+ return sprintf(buf, "%u\n", (unsigned int)atomic_read(&idev->event));
+}
+
+static struct device_attribute uio_class_attributes[] = {
+ __ATTR(name, S_IRUGO, show_name, NULL),
+ __ATTR(version, S_IRUGO, show_version, NULL),
+ __ATTR(event, S_IRUGO, show_event, NULL),
+ {}
+};
+
+/* UIO class infrastructure */
+static struct class uio_class = {
+ .name = "uio",
+ .dev_attrs = uio_class_attributes,
+};
+
+/*
+ * device functions
+ */
+static int uio_dev_add_attributes(struct uio_device *idev)
+{
+ int ret;
+ int mi, pi;
+ int map_found = 0;
+ int portio_found = 0;
+ struct uio_mem *mem;
+ struct uio_map *map;
+ struct uio_port *port;
+ struct uio_portio *portio;
+
+ for (mi = 0; mi < MAX_UIO_MAPS; mi++) {
+ mem = &idev->info->mem[mi];
+ if (mem->size == 0)
+ break;
+ if (!map_found) {
+ map_found = 1;
+ idev->map_dir = kobject_create_and_add("maps",
+ &idev->dev->kobj);
+ if (!idev->map_dir)
+ goto err_map;
+ }
+ map = kzalloc(sizeof(*map), GFP_KERNEL);
+ if (!map)
+ goto err_map;
+ kobject_init(&map->kobj, &map_attr_type);
+ map->mem = mem;
+ mem->map = map;
+ ret = kobject_add(&map->kobj, idev->map_dir, "map%d", mi);
+ if (ret)
+ goto err_map;
+ ret = kobject_uevent(&map->kobj, KOBJ_ADD);
+ if (ret)
+ goto err_map;
+ }
+
+ for (pi = 0; pi < MAX_UIO_PORT_REGIONS; pi++) {
+ port = &idev->info->port[pi];
+ if (port->size == 0)
+ break;
+ if (!portio_found) {
+ portio_found = 1;
+ idev->portio_dir = kobject_create_and_add("portio",
+ &idev->dev->kobj);
+ if (!idev->portio_dir)
+ goto err_portio;
+ }
+ portio = kzalloc(sizeof(*portio), GFP_KERNEL);
+ if (!portio)
+ goto err_portio;
+ kobject_init(&portio->kobj, &portio_attr_type);
+ portio->port = port;
+ port->portio = portio;
+ ret = kobject_add(&portio->kobj, idev->portio_dir,
+ "port%d", pi);
+ if (ret)
+ goto err_portio;
+ ret = kobject_uevent(&portio->kobj, KOBJ_ADD);
+ if (ret)
+ goto err_portio;
+ }
+
+ return 0;
+
+err_portio:
+ for (pi--; pi >= 0; pi--) {
+ port = &idev->info->port[pi];
+ portio = port->portio;
+ kobject_put(&portio->kobj);
+ }
+ kobject_put(idev->portio_dir);
+err_map:
+ for (mi--; mi>=0; mi--) {
+ mem = &idev->info->mem[mi];
+ map = mem->map;
+ kobject_put(&map->kobj);
+ }
+ kobject_put(idev->map_dir);
+ dev_err(idev->dev, "error creating sysfs files (%d)\n", ret);
+ return ret;
+}
+
+static void uio_dev_del_attributes(struct uio_device *idev)
+{
+ int i;
+ struct uio_mem *mem;
+ struct uio_port *port;
+
+ for (i = 0; i < MAX_UIO_MAPS; i++) {
+ mem = &idev->info->mem[i];
+ if (mem->size == 0)
+ break;
+ kobject_put(&mem->map->kobj);
+ }
+ kobject_put(idev->map_dir);
+
+ for (i = 0; i < MAX_UIO_PORT_REGIONS; i++) {
+ port = &idev->info->port[i];
+ if (port->size == 0)
+ break;
+ kobject_put(&port->portio->kobj);
+ }
+ kobject_put(idev->portio_dir);
+}
+
+static int uio_get_minor(struct uio_device *idev)
+{
+ int retval = -ENOMEM;
+ int id;
+
+ mutex_lock(&minor_lock);
+ if (idr_pre_get(&uio_idr, GFP_KERNEL) == 0)
+ goto exit;
+
+ retval = idr_get_new(&uio_idr, idev, &id);
+ if (retval < 0) {
+ if (retval == -EAGAIN)
+ retval = -ENOMEM;
+ goto exit;
+ }
+ if (id < UIO_MAX_DEVICES) {
+ idev->minor = id;
+ } else {
+ dev_err(idev->dev, "too many uio devices\n");
+ retval = -EINVAL;
+ idr_remove(&uio_idr, id);
+ }
+exit:
+ mutex_unlock(&minor_lock);
+ return retval;
+}
+
+static void uio_free_minor(struct uio_device *idev)
+{
+ mutex_lock(&minor_lock);
+ idr_remove(&uio_idr, idev->minor);
+ mutex_unlock(&minor_lock);
+}
+
+/**
+ * uio_event_notify - trigger an interrupt event
+ * @info: UIO device capabilities
+ */
+void uio_event_notify(struct uio_info *info)
+{
+ struct uio_device *idev = info->uio_dev;
+
+ atomic_inc(&idev->event);
+ wake_up_interruptible(&idev->wait);
+ kill_fasync(&idev->async_queue, SIGIO, POLL_IN);
+}
+EXPORT_SYMBOL_GPL(uio_event_notify);
+
+/**
+ * uio_interrupt - hardware interrupt handler
+ * @irq: IRQ number, can be UIO_IRQ_CYCLIC for cyclic timer
+ * @dev_id: Pointer to the devices uio_device structure
+ */
+static irqreturn_t uio_interrupt(int irq, void *dev_id)
+{
+ struct uio_device *idev = (struct uio_device *)dev_id;
+ irqreturn_t ret = idev->info->handler(irq, idev->info);
+
+ if (ret == IRQ_HANDLED)
+ uio_event_notify(idev->info);
+
+ return ret;
+}
+
+struct uio_listener {
+ struct uio_device *dev;
+ s32 event_count;
+};
+
+static int uio_open(struct inode *inode, struct file *filep)
+{
+ struct uio_device *idev;
+ struct uio_listener *listener;
+ int ret = 0;
+
+ mutex_lock(&minor_lock);
+ idev = idr_find(&uio_idr, iminor(inode));
+ mutex_unlock(&minor_lock);
+ if (!idev) {
+ ret = -ENODEV;
+ goto out;
+ }
+
+ if (!try_module_get(idev->owner)) {
+ ret = -ENODEV;
+ goto out;
+ }
+
+ listener = kmalloc(sizeof(*listener), GFP_KERNEL);
+ if (!listener) {
+ ret = -ENOMEM;
+ goto err_alloc_listener;
+ }
+
+ listener->dev = idev;
+ listener->event_count = atomic_read(&idev->event);
+ filep->private_data = listener;
+
+ if (idev->info->open) {
+ ret = idev->info->open(idev->info, inode);
+ if (ret)
+ goto err_infoopen;
+ }
+ return 0;
+
+err_infoopen:
+ kfree(listener);
+
+err_alloc_listener:
+ module_put(idev->owner);
+
+out:
+ return ret;
+}
+
+static int uio_fasync(int fd, struct file *filep, int on)
+{
+ struct uio_listener *listener = filep->private_data;
+ struct uio_device *idev = listener->dev;
+
+ return fasync_helper(fd, filep, on, &idev->async_queue);
+}
+
+static int uio_release(struct inode *inode, struct file *filep)
+{
+ int ret = 0;
+ struct uio_listener *listener = filep->private_data;
+ struct uio_device *idev = listener->dev;
+
+ if (idev->info->release)
+ ret = idev->info->release(idev->info, inode);
+
+ module_put(idev->owner);
+ kfree(listener);
+ return ret;
+}
+
+static unsigned int uio_poll(struct file *filep, poll_table *wait)
+{
+ struct uio_listener *listener = filep->private_data;
+ struct uio_device *idev = listener->dev;
+
+ if (!idev->info->irq)
+ return -EIO;
+
+ poll_wait(filep, &idev->wait, wait);
+ if (listener->event_count != atomic_read(&idev->event))
+ return POLLIN | POLLRDNORM;
+ return 0;
+}
+
+static ssize_t uio_read(struct file *filep, char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct uio_listener *listener = filep->private_data;
+ struct uio_device *idev = listener->dev;
+ DECLARE_WAITQUEUE(wait, current);
+ ssize_t retval;
+ s32 event_count;
+
+ if (!idev->info->irq)
+ return -EIO;
+
+ if (count != sizeof(s32))
+ return -EINVAL;
+
+ add_wait_queue(&idev->wait, &wait);
+
+ do {
+ set_current_state(TASK_INTERRUPTIBLE);
+
+ event_count = atomic_read(&idev->event);
+ if (event_count != listener->event_count) {
+ if (copy_to_user(buf, &event_count, count))
+ retval = -EFAULT;
+ else {
+ listener->event_count = event_count;
+ retval = count;
+ }
+ break;
+ }
+
+ if (filep->f_flags & O_NONBLOCK) {
+ retval = -EAGAIN;
+ break;
+ }
+
+ if (signal_pending(current)) {
+ retval = -ERESTARTSYS;
+ break;
+ }
+ schedule();
+ } while (1);
+
+ __set_current_state(TASK_RUNNING);
+ remove_wait_queue(&idev->wait, &wait);
+
+ return retval;
+}
+
+static ssize_t uio_write(struct file *filep, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct uio_listener *listener = filep->private_data;
+ struct uio_device *idev = listener->dev;
+ ssize_t retval;
+ s32 irq_on;
+
+ if (!idev->info->irq)
+ return -EIO;
+
+ if (count != sizeof(s32))
+ return -EINVAL;
+
+ if (!idev->info->irqcontrol)
+ return -ENOSYS;
+
+ if (copy_from_user(&irq_on, buf, count))
+ return -EFAULT;
+
+ retval = idev->info->irqcontrol(idev->info, irq_on);
+
+ return retval ? retval : sizeof(s32);
+}
+
+static int uio_find_mem_index(struct vm_area_struct *vma)
+{
+ struct uio_device *idev = vma->vm_private_data;
+
+ if (vma->vm_pgoff < MAX_UIO_MAPS) {
+ if (idev->info->mem[vma->vm_pgoff].size == 0)
+ return -1;
+ return (int)vma->vm_pgoff;
+ }
+ return -1;
+}
+
+static void uio_vma_open(struct vm_area_struct *vma)
+{
+ struct uio_device *idev = vma->vm_private_data;
+ idev->vma_count++;
+}
+
+static void uio_vma_close(struct vm_area_struct *vma)
+{
+ struct uio_device *idev = vma->vm_private_data;
+ idev->vma_count--;
+}
+
+static int uio_vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+{
+ struct uio_device *idev = vma->vm_private_data;
+ struct page *page;
+ unsigned long offset;
+
+ int mi = uio_find_mem_index(vma);
+ if (mi < 0)
+ return VM_FAULT_SIGBUS;
+
+ /*
+ * We need to subtract mi because userspace uses offset = N*PAGE_SIZE
+ * to use mem[N].
+ */
+ offset = (vmf->pgoff - mi) << PAGE_SHIFT;
+
+ if (idev->info->mem[mi].memtype == UIO_MEM_LOGICAL)
+ page = virt_to_page(idev->info->mem[mi].addr + offset);
+ else
+ page = vmalloc_to_page((void *)(unsigned long)idev->info->mem[mi].addr + offset);
+ get_page(page);
+ vmf->page = page;
+ return 0;
+}
+
+static const struct vm_operations_struct uio_vm_ops = {
+ .open = uio_vma_open,
+ .close = uio_vma_close,
+ .fault = uio_vma_fault,
+};
+
+static int uio_mmap_physical(struct vm_area_struct *vma)
+{
+ struct uio_device *idev = vma->vm_private_data;
+ int mi = uio_find_mem_index(vma);
+ struct uio_mem *mem;
+ if (mi < 0)
+ return -EINVAL;
+ mem = idev->info->mem + mi;
+
+ if (vma->vm_end - vma->vm_start > mem->size)
+ return -EINVAL;
+
+ vma->vm_flags |= VM_IO | VM_RESERVED;
+
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+
+ /*
+ * We cannot use the vm_iomap_memory() helper here,
+ * because vma->vm_pgoff is the map index we looked
+ * up above in uio_find_mem_index(), rather than an
+ * actual page offset into the mmap.
+ *
+ * So we just do the physical mmap without a page
+ * offset.
+ */
+ return remap_pfn_range(vma,
+ vma->vm_start,
+ mem->addr >> PAGE_SHIFT,
+ vma->vm_end - vma->vm_start,
+ vma->vm_page_prot);
+}
+
+static int uio_mmap_logical(struct vm_area_struct *vma)
+{
+ vma->vm_flags |= VM_RESERVED;
+ vma->vm_ops = &uio_vm_ops;
+ uio_vma_open(vma);
+ return 0;
+}
+
+static int uio_mmap(struct file *filep, struct vm_area_struct *vma)
+{
+ struct uio_listener *listener = filep->private_data;
+ struct uio_device *idev = listener->dev;
+ int mi;
+ unsigned long requested_pages, actual_pages;
+ int ret = 0;
+
+ if (vma->vm_end < vma->vm_start)
+ return -EINVAL;
+
+ vma->vm_private_data = idev;
+
+ mi = uio_find_mem_index(vma);
+ if (mi < 0)
+ return -EINVAL;
+
+ requested_pages = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
+ actual_pages = ((idev->info->mem[mi].addr & ~PAGE_MASK)
+ + idev->info->mem[mi].size + PAGE_SIZE -1) >> PAGE_SHIFT;
+ if (requested_pages > actual_pages)
+ return -EINVAL;
+
+ if (idev->info->mmap) {
+ ret = idev->info->mmap(idev->info, vma);
+ return ret;
+ }
+
+ switch (idev->info->mem[mi].memtype) {
+ case UIO_MEM_PHYS:
+ return uio_mmap_physical(vma);
+ case UIO_MEM_LOGICAL:
+ case UIO_MEM_VIRTUAL:
+ return uio_mmap_logical(vma);
+ default:
+ return -EINVAL;
+ }
+}
+
+static const struct file_operations uio_fops = {
+ .owner = THIS_MODULE,
+ .open = uio_open,
+ .release = uio_release,
+ .read = uio_read,
+ .write = uio_write,
+ .mmap = uio_mmap,
+ .poll = uio_poll,
+ .fasync = uio_fasync,
+ .llseek = noop_llseek,
+};
+
+static int uio_major_init(void)
+{
+ static const char name[] = "uio";
+ struct cdev *cdev = NULL;
+ dev_t uio_dev = 0;
+ int result;
+
+ result = alloc_chrdev_region(&uio_dev, 0, UIO_MAX_DEVICES, name);
+ if (result)
+ goto out;
+
+ result = -ENOMEM;
+ cdev = cdev_alloc();
+ if (!cdev)
+ goto out_unregister;
+
+ cdev->owner = THIS_MODULE;
+ cdev->ops = &uio_fops;
+ kobject_set_name(&cdev->kobj, "%s", name);
+
+ result = cdev_add(cdev, uio_dev, UIO_MAX_DEVICES);
+ if (result)
+ goto out_put;
+
+ uio_major = MAJOR(uio_dev);
+ uio_cdev = cdev;
+ return 0;
+out_put:
+ kobject_put(&cdev->kobj);
+out_unregister:
+ unregister_chrdev_region(uio_dev, UIO_MAX_DEVICES);
+out:
+ return result;
+}
+
+static void uio_major_cleanup(void)
+{
+ unregister_chrdev_region(MKDEV(uio_major, 0), UIO_MAX_DEVICES);
+ cdev_del(uio_cdev);
+}
+
+static int init_uio_class(void)
+{
+ int ret;
+
+ /* This is the first time in here, set everything up properly */
+ ret = uio_major_init();
+ if (ret)
+ goto exit;
+
+ ret = class_register(&uio_class);
+ if (ret) {
+ printk(KERN_ERR "class_register failed for uio\n");
+ goto err_class_register;
+ }
+ return 0;
+
+err_class_register:
+ uio_major_cleanup();
+exit:
+ return ret;
+}
+
+static void release_uio_class(void)
+{
+ class_unregister(&uio_class);
+ uio_major_cleanup();
+}
+
+/**
+ * uio_register_device - register a new userspace IO device
+ * @owner: module that creates the new device
+ * @parent: parent device
+ * @info: UIO device capabilities
+ *
+ * returns zero on success or a negative error code.
+ */
+int __uio_register_device(struct module *owner,
+ struct device *parent,
+ struct uio_info *info)
+{
+ struct uio_device *idev;
+ int ret = 0;
+
+ if (!parent || !info || !info->name || !info->version)
+ return -EINVAL;
+
+ info->uio_dev = NULL;
+
+ idev = kzalloc(sizeof(*idev), GFP_KERNEL);
+ if (!idev) {
+ ret = -ENOMEM;
+ goto err_kzalloc;
+ }
+
+ idev->owner = owner;
+ idev->info = info;
+ init_waitqueue_head(&idev->wait);
+ atomic_set(&idev->event, 0);
+
+ ret = uio_get_minor(idev);
+ if (ret)
+ goto err_get_minor;
+
+ idev->dev = device_create(&uio_class, parent,
+ MKDEV(uio_major, idev->minor), idev,
+ "uio%d", idev->minor);
+ if (IS_ERR(idev->dev)) {
+ printk(KERN_ERR "UIO: device register failed\n");
+ ret = PTR_ERR(idev->dev);
+ goto err_device_create;
+ }
+
+ ret = uio_dev_add_attributes(idev);
+ if (ret)
+ goto err_uio_dev_add_attributes;
+
+ info->uio_dev = idev;
+
+ if (info->irq && (info->irq != UIO_IRQ_CUSTOM)) {
+ ret = request_irq(info->irq, uio_interrupt,
+ info->irq_flags, info->name, idev);
+ if (ret)
+ goto err_request_irq;
+ }
+
+ return 0;
+
+err_request_irq:
+ uio_dev_del_attributes(idev);
+err_uio_dev_add_attributes:
+ device_destroy(&uio_class, MKDEV(uio_major, idev->minor));
+err_device_create:
+ uio_free_minor(idev);
+err_get_minor:
+ kfree(idev);
+err_kzalloc:
+ return ret;
+}
+EXPORT_SYMBOL_GPL(__uio_register_device);
+
+/**
+ * uio_unregister_device - unregister a industrial IO device
+ * @info: UIO device capabilities
+ *
+ */
+void uio_unregister_device(struct uio_info *info)
+{
+ struct uio_device *idev;
+
+ if (!info || !info->uio_dev)
+ return;
+
+ idev = info->uio_dev;
+
+ uio_free_minor(idev);
+
+ if (info->irq && (info->irq != UIO_IRQ_CUSTOM))
+ free_irq(info->irq, idev);
+
+ uio_dev_del_attributes(idev);
+
+ device_destroy(&uio_class, MKDEV(uio_major, idev->minor));
+ kfree(idev);
+
+ return;
+}
+EXPORT_SYMBOL_GPL(uio_unregister_device);
+
+static int __init uio_init(void)
+{
+ return init_uio_class();
+}
+
+static void __exit uio_exit(void)
+{
+ release_uio_class();
+}
+
+module_init(uio_init)
+module_exit(uio_exit)
+MODULE_LICENSE("GPL v2");
diff --git a/ap/os/linux/linux-3.4.x/drivers/uio/uio_aec.c b/ap/os/linux/linux-3.4.x/drivers/uio/uio_aec.c
new file mode 100644
index 0000000..72b22d4
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/uio/uio_aec.c
@@ -0,0 +1,176 @@
+/*
+ * uio_aec.c -- simple driver for Adrienne Electronics Corp time code PCI device
+ *
+ * Copyright (C) 2008 Brandon Philips <brandon@ifup.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * 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.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/cdev.h>
+#include <linux/fs.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
+#include <linux/uio_driver.h>
+#include <linux/slab.h>
+
+#define PCI_VENDOR_ID_AEC 0xaecb
+#define PCI_DEVICE_ID_AEC_VITCLTC 0x6250
+
+#define INT_ENABLE_ADDR 0xFC
+#define INT_ENABLE 0x10
+#define INT_DISABLE 0x0
+
+#define INT_MASK_ADDR 0x2E
+#define INT_MASK_ALL 0x3F
+
+#define INTA_DRVR_ADDR 0xFE
+#define INTA_ENABLED_FLAG 0x08
+#define INTA_FLAG 0x01
+
+#define MAILBOX 0x0F
+
+static struct pci_device_id ids[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_AEC, PCI_DEVICE_ID_AEC_VITCLTC), },
+ { 0, }
+};
+MODULE_DEVICE_TABLE(pci, ids);
+
+static irqreturn_t aectc_irq(int irq, struct uio_info *dev_info)
+{
+ void __iomem *int_flag = dev_info->priv + INTA_DRVR_ADDR;
+ unsigned char status = ioread8(int_flag);
+
+
+ if ((status & INTA_ENABLED_FLAG) && (status & INTA_FLAG)) {
+ /* application writes 0x00 to 0x2F to get next interrupt */
+ status = ioread8(dev_info->priv + MAILBOX);
+ return IRQ_HANDLED;
+ }
+
+ return IRQ_NONE;
+}
+
+static void print_board_data(struct pci_dev *pdev, struct uio_info *i)
+{
+ dev_info(&pdev->dev, "PCI-TC board vendor: %x%x number: %x%x"
+ " revision: %c%c\n",
+ ioread8(i->priv + 0x01),
+ ioread8(i->priv + 0x00),
+ ioread8(i->priv + 0x03),
+ ioread8(i->priv + 0x02),
+ ioread8(i->priv + 0x06),
+ ioread8(i->priv + 0x07));
+}
+
+static int __devinit probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+ struct uio_info *info;
+ int ret;
+
+ info = kzalloc(sizeof(struct uio_info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ if (pci_enable_device(pdev))
+ goto out_free;
+
+ if (pci_request_regions(pdev, "aectc"))
+ goto out_disable;
+
+ info->name = "aectc";
+ info->port[0].start = pci_resource_start(pdev, 0);
+ if (!info->port[0].start)
+ goto out_release;
+ info->priv = pci_iomap(pdev, 0, 0);
+ if (!info->priv)
+ goto out_release;
+ info->port[0].size = pci_resource_len(pdev, 0);
+ info->port[0].porttype = UIO_PORT_GPIO;
+
+ info->version = "0.0.1";
+ info->irq = pdev->irq;
+ info->irq_flags = IRQF_SHARED;
+ info->handler = aectc_irq;
+
+ print_board_data(pdev, info);
+ ret = uio_register_device(&pdev->dev, info);
+ if (ret)
+ goto out_unmap;
+
+ iowrite32(INT_ENABLE, info->priv + INT_ENABLE_ADDR);
+ iowrite8(INT_MASK_ALL, info->priv + INT_MASK_ADDR);
+ if (!(ioread8(info->priv + INTA_DRVR_ADDR)
+ & INTA_ENABLED_FLAG))
+ dev_err(&pdev->dev, "aectc: interrupts not enabled\n");
+
+ pci_set_drvdata(pdev, info);
+
+ return 0;
+
+out_unmap:
+ pci_iounmap(pdev, info->priv);
+out_release:
+ pci_release_regions(pdev);
+out_disable:
+ pci_disable_device(pdev);
+out_free:
+ kfree(info);
+ return -ENODEV;
+}
+
+static void remove(struct pci_dev *pdev)
+{
+ struct uio_info *info = pci_get_drvdata(pdev);
+
+ /* disable interrupts */
+ iowrite8(INT_DISABLE, info->priv + INT_MASK_ADDR);
+ iowrite32(INT_DISABLE, info->priv + INT_ENABLE_ADDR);
+ /* read mailbox to ensure board drops irq */
+ ioread8(info->priv + MAILBOX);
+
+ uio_unregister_device(info);
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+ pci_set_drvdata(pdev, NULL);
+ iounmap(info->priv);
+
+ kfree(info);
+}
+
+static struct pci_driver pci_driver = {
+ .name = "aectc",
+ .id_table = ids,
+ .probe = probe,
+ .remove = remove,
+};
+
+static int __init aectc_init(void)
+{
+ return pci_register_driver(&pci_driver);
+}
+
+static void __exit aectc_exit(void)
+{
+ pci_unregister_driver(&pci_driver);
+}
+
+MODULE_LICENSE("GPL");
+
+module_init(aectc_init);
+module_exit(aectc_exit);
diff --git a/ap/os/linux/linux-3.4.x/drivers/uio/uio_cif.c b/ap/os/linux/linux-3.4.x/drivers/uio/uio_cif.c
new file mode 100644
index 0000000..a84a451
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/uio/uio_cif.c
@@ -0,0 +1,153 @@
+/*
+ * UIO Hilscher CIF card driver
+ *
+ * (C) 2007 Hans J. Koch <hjk@hansjkoch.de>
+ * Original code (C) 2005 Benedikt Spranger <b.spranger@linutronix.de>
+ *
+ * Licensed under GPL version 2 only.
+ *
+ */
+
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/uio_driver.h>
+
+#include <asm/io.h>
+
+#define PLX9030_INTCSR 0x4C
+#define INTSCR_INT1_ENABLE 0x01
+#define INTSCR_INT1_STATUS 0x04
+#define INT1_ENABLED_AND_ACTIVE (INTSCR_INT1_ENABLE | INTSCR_INT1_STATUS)
+
+#define PCI_SUBVENDOR_ID_PEP 0x1518
+#define CIF_SUBDEVICE_PROFIBUS 0x430
+#define CIF_SUBDEVICE_DEVICENET 0x432
+
+
+static irqreturn_t hilscher_handler(int irq, struct uio_info *dev_info)
+{
+ void __iomem *plx_intscr = dev_info->mem[0].internal_addr
+ + PLX9030_INTCSR;
+
+ if ((ioread8(plx_intscr) & INT1_ENABLED_AND_ACTIVE)
+ != INT1_ENABLED_AND_ACTIVE)
+ return IRQ_NONE;
+
+ /* Disable interrupt */
+ iowrite8(ioread8(plx_intscr) & ~INTSCR_INT1_ENABLE, plx_intscr);
+ return IRQ_HANDLED;
+}
+
+static int __devinit hilscher_pci_probe(struct pci_dev *dev,
+ const struct pci_device_id *id)
+{
+ struct uio_info *info;
+
+ info = kzalloc(sizeof(struct uio_info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ if (pci_enable_device(dev))
+ goto out_free;
+
+ if (pci_request_regions(dev, "hilscher"))
+ goto out_disable;
+
+ info->mem[0].addr = pci_resource_start(dev, 0);
+ if (!info->mem[0].addr)
+ goto out_release;
+ info->mem[0].internal_addr = pci_ioremap_bar(dev, 0);
+ if (!info->mem[0].internal_addr)
+ goto out_release;
+
+ info->mem[0].size = pci_resource_len(dev, 0);
+ info->mem[0].memtype = UIO_MEM_PHYS;
+ info->mem[1].addr = pci_resource_start(dev, 2);
+ info->mem[1].size = pci_resource_len(dev, 2);
+ info->mem[1].memtype = UIO_MEM_PHYS;
+ switch (id->subdevice) {
+ case CIF_SUBDEVICE_PROFIBUS:
+ info->name = "CIF_Profibus";
+ break;
+ case CIF_SUBDEVICE_DEVICENET:
+ info->name = "CIF_Devicenet";
+ break;
+ default:
+ info->name = "CIF_???";
+ }
+ info->version = "0.0.1";
+ info->irq = dev->irq;
+ info->irq_flags = IRQF_SHARED;
+ info->handler = hilscher_handler;
+
+ if (uio_register_device(&dev->dev, info))
+ goto out_unmap;
+
+ pci_set_drvdata(dev, info);
+
+ return 0;
+out_unmap:
+ iounmap(info->mem[0].internal_addr);
+out_release:
+ pci_release_regions(dev);
+out_disable:
+ pci_disable_device(dev);
+out_free:
+ kfree (info);
+ return -ENODEV;
+}
+
+static void hilscher_pci_remove(struct pci_dev *dev)
+{
+ struct uio_info *info = pci_get_drvdata(dev);
+
+ uio_unregister_device(info);
+ pci_release_regions(dev);
+ pci_disable_device(dev);
+ pci_set_drvdata(dev, NULL);
+ iounmap(info->mem[0].internal_addr);
+
+ kfree (info);
+}
+
+static struct pci_device_id hilscher_pci_ids[] __devinitdata = {
+ {
+ .vendor = PCI_VENDOR_ID_PLX,
+ .device = PCI_DEVICE_ID_PLX_9030,
+ .subvendor = PCI_SUBVENDOR_ID_PEP,
+ .subdevice = CIF_SUBDEVICE_PROFIBUS,
+ },
+ {
+ .vendor = PCI_VENDOR_ID_PLX,
+ .device = PCI_DEVICE_ID_PLX_9030,
+ .subvendor = PCI_SUBVENDOR_ID_PEP,
+ .subdevice = CIF_SUBDEVICE_DEVICENET,
+ },
+ { 0, }
+};
+
+static struct pci_driver hilscher_pci_driver = {
+ .name = "hilscher",
+ .id_table = hilscher_pci_ids,
+ .probe = hilscher_pci_probe,
+ .remove = hilscher_pci_remove,
+};
+
+static int __init hilscher_init_module(void)
+{
+ return pci_register_driver(&hilscher_pci_driver);
+}
+
+static void __exit hilscher_exit_module(void)
+{
+ pci_unregister_driver(&hilscher_pci_driver);
+}
+
+module_init(hilscher_init_module);
+module_exit(hilscher_exit_module);
+
+MODULE_DEVICE_TABLE(pci, hilscher_pci_ids);
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Hans J. Koch, Benedikt Spranger");
diff --git a/ap/os/linux/linux-3.4.x/drivers/uio/uio_netx.c b/ap/os/linux/linux-3.4.x/drivers/uio/uio_netx.c
new file mode 100644
index 0000000..a879fd5
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/uio/uio_netx.c
@@ -0,0 +1,192 @@
+/*
+ * UIO driver for Hilscher NetX based fieldbus cards (cifX, comX).
+ * See http://www.hilscher.com for details.
+ *
+ * (C) 2007 Hans J. Koch <hjk@hansjkoch.de>
+ * (C) 2008 Manuel Traut <manut@linutronix.de>
+ *
+ * Licensed under GPL version 2 only.
+ *
+ */
+
+#include <linux/device.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/uio_driver.h>
+
+#define PCI_VENDOR_ID_HILSCHER 0x15CF
+#define PCI_DEVICE_ID_HILSCHER_NETX 0x0000
+#define PCI_DEVICE_ID_HILSCHER_NETPLC 0x0010
+#define PCI_SUBDEVICE_ID_NETPLC_RAM 0x0000
+#define PCI_SUBDEVICE_ID_NETPLC_FLASH 0x0001
+#define PCI_SUBDEVICE_ID_NXSB_PCA 0x3235
+#define PCI_SUBDEVICE_ID_NXPCA 0x3335
+
+#define DPM_HOST_INT_EN0 0xfff0
+#define DPM_HOST_INT_STAT0 0xffe0
+
+#define DPM_HOST_INT_MASK 0xe600ffff
+#define DPM_HOST_INT_GLOBAL_EN 0x80000000
+
+static irqreturn_t netx_handler(int irq, struct uio_info *dev_info)
+{
+ void __iomem *int_enable_reg = dev_info->mem[0].internal_addr
+ + DPM_HOST_INT_EN0;
+ void __iomem *int_status_reg = dev_info->mem[0].internal_addr
+ + DPM_HOST_INT_STAT0;
+
+ /* Is one of our interrupts enabled and active ? */
+ if (!(ioread32(int_enable_reg) & ioread32(int_status_reg)
+ & DPM_HOST_INT_MASK))
+ return IRQ_NONE;
+
+ /* Disable interrupt */
+ iowrite32(ioread32(int_enable_reg) & ~DPM_HOST_INT_GLOBAL_EN,
+ int_enable_reg);
+ return IRQ_HANDLED;
+}
+
+static int __devinit netx_pci_probe(struct pci_dev *dev,
+ const struct pci_device_id *id)
+{
+ struct uio_info *info;
+ int bar;
+
+ info = kzalloc(sizeof(struct uio_info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ if (pci_enable_device(dev))
+ goto out_free;
+
+ if (pci_request_regions(dev, "netx"))
+ goto out_disable;
+
+ switch (id->device) {
+ case PCI_DEVICE_ID_HILSCHER_NETX:
+ bar = 0;
+ info->name = "netx";
+ break;
+ case PCI_DEVICE_ID_HILSCHER_NETPLC:
+ bar = 0;
+ info->name = "netplc";
+ break;
+ default:
+ bar = 2;
+ info->name = "netx_plx";
+ }
+
+ /* BAR0 or 2 points to the card's dual port memory */
+ info->mem[0].addr = pci_resource_start(dev, bar);
+ if (!info->mem[0].addr)
+ goto out_release;
+ info->mem[0].internal_addr = ioremap(pci_resource_start(dev, bar),
+ pci_resource_len(dev, bar));
+
+ if (!info->mem[0].internal_addr)
+ goto out_release;
+
+ info->mem[0].size = pci_resource_len(dev, bar);
+ info->mem[0].memtype = UIO_MEM_PHYS;
+ info->irq = dev->irq;
+ info->irq_flags = IRQF_SHARED;
+ info->handler = netx_handler;
+ info->version = "0.0.1";
+
+ /* Make sure all interrupts are disabled */
+ iowrite32(0, info->mem[0].internal_addr + DPM_HOST_INT_EN0);
+
+ if (uio_register_device(&dev->dev, info))
+ goto out_unmap;
+
+ pci_set_drvdata(dev, info);
+ dev_info(&dev->dev, "Found %s card, registered UIO device.\n",
+ info->name);
+
+ return 0;
+
+out_unmap:
+ iounmap(info->mem[0].internal_addr);
+out_release:
+ pci_release_regions(dev);
+out_disable:
+ pci_disable_device(dev);
+out_free:
+ kfree(info);
+ return -ENODEV;
+}
+
+static void netx_pci_remove(struct pci_dev *dev)
+{
+ struct uio_info *info = pci_get_drvdata(dev);
+
+ /* Disable all interrupts */
+ iowrite32(0, info->mem[0].internal_addr + DPM_HOST_INT_EN0);
+ uio_unregister_device(info);
+ pci_release_regions(dev);
+ pci_disable_device(dev);
+ pci_set_drvdata(dev, NULL);
+ iounmap(info->mem[0].internal_addr);
+
+ kfree(info);
+}
+
+static struct pci_device_id netx_pci_ids[] = {
+ {
+ .vendor = PCI_VENDOR_ID_HILSCHER,
+ .device = PCI_DEVICE_ID_HILSCHER_NETX,
+ .subvendor = 0,
+ .subdevice = 0,
+ },
+ {
+ .vendor = PCI_VENDOR_ID_HILSCHER,
+ .device = PCI_DEVICE_ID_HILSCHER_NETPLC,
+ .subvendor = PCI_VENDOR_ID_HILSCHER,
+ .subdevice = PCI_SUBDEVICE_ID_NETPLC_RAM,
+ },
+ {
+ .vendor = PCI_VENDOR_ID_HILSCHER,
+ .device = PCI_DEVICE_ID_HILSCHER_NETPLC,
+ .subvendor = PCI_VENDOR_ID_HILSCHER,
+ .subdevice = PCI_SUBDEVICE_ID_NETPLC_FLASH,
+ },
+ {
+ .vendor = PCI_VENDOR_ID_PLX,
+ .device = PCI_DEVICE_ID_PLX_9030,
+ .subvendor = PCI_VENDOR_ID_PLX,
+ .subdevice = PCI_SUBDEVICE_ID_NXSB_PCA,
+ },
+ {
+ .vendor = PCI_VENDOR_ID_PLX,
+ .device = PCI_DEVICE_ID_PLX_9030,
+ .subvendor = PCI_VENDOR_ID_PLX,
+ .subdevice = PCI_SUBDEVICE_ID_NXPCA,
+ },
+ { 0, }
+};
+
+static struct pci_driver netx_pci_driver = {
+ .name = "netx",
+ .id_table = netx_pci_ids,
+ .probe = netx_pci_probe,
+ .remove = netx_pci_remove,
+};
+
+static int __init netx_init_module(void)
+{
+ return pci_register_driver(&netx_pci_driver);
+}
+
+static void __exit netx_exit_module(void)
+{
+ pci_unregister_driver(&netx_pci_driver);
+}
+
+module_init(netx_init_module);
+module_exit(netx_exit_module);
+
+MODULE_DEVICE_TABLE(pci, netx_pci_ids);
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Hans J. Koch, Manuel Traut");
diff --git a/ap/os/linux/linux-3.4.x/drivers/uio/uio_pci_generic.c b/ap/os/linux/linux-3.4.x/drivers/uio/uio_pci_generic.c
new file mode 100644
index 0000000..0bd08ef
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/uio/uio_pci_generic.c
@@ -0,0 +1,140 @@
+/* uio_pci_generic - generic UIO driver for PCI 2.3 devices
+ *
+ * Copyright (C) 2009 Red Hat, Inc.
+ * Author: Michael S. Tsirkin <mst@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2.
+ *
+ * Since the driver does not declare any device ids, you must allocate
+ * id and bind the device to the driver yourself. For example:
+ *
+ * # echo "8086 10f5" > /sys/bus/pci/drivers/uio_pci_generic/new_id
+ * # echo -n 0000:00:19.0 > /sys/bus/pci/drivers/e1000e/unbind
+ * # echo -n 0000:00:19.0 > /sys/bus/pci/drivers/uio_pci_generic/bind
+ * # ls -l /sys/bus/pci/devices/0000:00:19.0/driver
+ * .../0000:00:19.0/driver -> ../../../bus/pci/drivers/uio_pci_generic
+ *
+ * Driver won't bind to devices which do not support the Interrupt Disable Bit
+ * in the command register. All devices compliant to PCI 2.3 (circa 2002) and
+ * all compliant PCI Express devices should support this bit.
+ */
+
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/uio_driver.h>
+
+#define DRIVER_VERSION "0.01.0"
+#define DRIVER_AUTHOR "Michael S. Tsirkin <mst@redhat.com>"
+#define DRIVER_DESC "Generic UIO driver for PCI 2.3 devices"
+
+struct uio_pci_generic_dev {
+ struct uio_info info;
+ struct pci_dev *pdev;
+};
+
+static inline struct uio_pci_generic_dev *
+to_uio_pci_generic_dev(struct uio_info *info)
+{
+ return container_of(info, struct uio_pci_generic_dev, info);
+}
+
+/* Interrupt handler. Read/modify/write the command register to disable
+ * the interrupt. */
+static irqreturn_t irqhandler(int irq, struct uio_info *info)
+{
+ struct uio_pci_generic_dev *gdev = to_uio_pci_generic_dev(info);
+
+ if (!pci_check_and_mask_intx(gdev->pdev))
+ return IRQ_NONE;
+
+ /* UIO core will signal the user process. */
+ return IRQ_HANDLED;
+}
+
+static int __devinit probe(struct pci_dev *pdev,
+ const struct pci_device_id *id)
+{
+ struct uio_pci_generic_dev *gdev;
+ int err;
+
+ err = pci_enable_device(pdev);
+ if (err) {
+ dev_err(&pdev->dev, "%s: pci_enable_device failed: %d\n",
+ __func__, err);
+ return err;
+ }
+
+ if (!pdev->irq) {
+ dev_warn(&pdev->dev, "No IRQ assigned to device: "
+ "no support for interrupts?\n");
+ pci_disable_device(pdev);
+ return -ENODEV;
+ }
+
+ if (!pci_intx_mask_supported(pdev)) {
+ err = -ENODEV;
+ goto err_verify;
+ }
+
+ gdev = kzalloc(sizeof(struct uio_pci_generic_dev), GFP_KERNEL);
+ if (!gdev) {
+ err = -ENOMEM;
+ goto err_alloc;
+ }
+
+ gdev->info.name = "uio_pci_generic";
+ gdev->info.version = DRIVER_VERSION;
+ gdev->info.irq = pdev->irq;
+ gdev->info.irq_flags = IRQF_SHARED;
+ gdev->info.handler = irqhandler;
+ gdev->pdev = pdev;
+
+ if (uio_register_device(&pdev->dev, &gdev->info))
+ goto err_register;
+ pci_set_drvdata(pdev, gdev);
+
+ return 0;
+err_register:
+ kfree(gdev);
+err_alloc:
+err_verify:
+ pci_disable_device(pdev);
+ return err;
+}
+
+static void remove(struct pci_dev *pdev)
+{
+ struct uio_pci_generic_dev *gdev = pci_get_drvdata(pdev);
+
+ uio_unregister_device(&gdev->info);
+ pci_disable_device(pdev);
+ kfree(gdev);
+}
+
+static struct pci_driver driver = {
+ .name = "uio_pci_generic",
+ .id_table = NULL, /* only dynamic id's */
+ .probe = probe,
+ .remove = remove,
+};
+
+static int __init init(void)
+{
+ pr_info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
+ return pci_register_driver(&driver);
+}
+
+static void __exit cleanup(void)
+{
+ pci_unregister_driver(&driver);
+}
+
+module_init(init);
+module_exit(cleanup);
+
+MODULE_VERSION(DRIVER_VERSION);
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
diff --git a/ap/os/linux/linux-3.4.x/drivers/uio/uio_pdrv.c b/ap/os/linux/linux-3.4.x/drivers/uio/uio_pdrv.c
new file mode 100644
index 0000000..72d3646
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/uio/uio_pdrv.c
@@ -0,0 +1,112 @@
+/*
+ * drivers/uio/uio_pdrv.c
+ *
+ * Copyright (C) 2008 by Digi International Inc.
+ * 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 version 2 as published by
+ * the Free Software Foundation.
+ */
+#include <linux/platform_device.h>
+#include <linux/uio_driver.h>
+#include <linux/stringify.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+
+#define DRIVER_NAME "uio_pdrv"
+
+struct uio_platdata {
+ struct uio_info *uioinfo;
+};
+
+static int uio_pdrv_probe(struct platform_device *pdev)
+{
+ struct uio_info *uioinfo = pdev->dev.platform_data;
+ struct uio_platdata *pdata;
+ struct uio_mem *uiomem;
+ int ret = -ENODEV;
+ int i;
+
+ if (!uioinfo || !uioinfo->name || !uioinfo->version) {
+ dev_dbg(&pdev->dev, "%s: err_uioinfo\n", __func__);
+ goto err_uioinfo;
+ }
+
+ pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
+ if (!pdata) {
+ ret = -ENOMEM;
+ dev_dbg(&pdev->dev, "%s: err_alloc_pdata\n", __func__);
+ goto err_alloc_pdata;
+ }
+
+ pdata->uioinfo = uioinfo;
+
+ uiomem = &uioinfo->mem[0];
+
+ for (i = 0; i < pdev->num_resources; ++i) {
+ struct resource *r = &pdev->resource[i];
+
+ if (r->flags != IORESOURCE_MEM)
+ continue;
+
+ if (uiomem >= &uioinfo->mem[MAX_UIO_MAPS]) {
+ dev_warn(&pdev->dev, "device has more than "
+ __stringify(MAX_UIO_MAPS)
+ " I/O memory resources.\n");
+ break;
+ }
+
+ uiomem->memtype = UIO_MEM_PHYS;
+ uiomem->addr = r->start;
+ uiomem->size = resource_size(r);
+ ++uiomem;
+ }
+
+ while (uiomem < &uioinfo->mem[MAX_UIO_MAPS]) {
+ uiomem->size = 0;
+ ++uiomem;
+ }
+
+ pdata->uioinfo->priv = pdata;
+
+ ret = uio_register_device(&pdev->dev, pdata->uioinfo);
+
+ if (ret) {
+ kfree(pdata);
+err_alloc_pdata:
+err_uioinfo:
+ return ret;
+ }
+
+ platform_set_drvdata(pdev, pdata);
+
+ return 0;
+}
+
+static int uio_pdrv_remove(struct platform_device *pdev)
+{
+ struct uio_platdata *pdata = platform_get_drvdata(pdev);
+
+ uio_unregister_device(pdata->uioinfo);
+
+ kfree(pdata);
+
+ return 0;
+}
+
+static struct platform_driver uio_pdrv = {
+ .probe = uio_pdrv_probe,
+ .remove = uio_pdrv_remove,
+ .driver = {
+ .name = DRIVER_NAME,
+ .owner = THIS_MODULE,
+ },
+};
+
+module_platform_driver(uio_pdrv);
+
+MODULE_AUTHOR("Uwe Kleine-Koenig");
+MODULE_DESCRIPTION("Userspace I/O platform driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" DRIVER_NAME);
diff --git a/ap/os/linux/linux-3.4.x/drivers/uio/uio_pdrv_genirq.c b/ap/os/linux/linux-3.4.x/drivers/uio/uio_pdrv_genirq.c
new file mode 100644
index 0000000..b98371d
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/uio/uio_pdrv_genirq.c
@@ -0,0 +1,281 @@
+/*
+ * drivers/uio/uio_pdrv_genirq.c
+ *
+ * Userspace I/O platform driver with generic IRQ handling code.
+ *
+ * Copyright (C) 2008 Magnus Damm
+ *
+ * Based on uio_pdrv.c by Uwe Kleine-Koenig,
+ * Copyright (C) 2008 by Digi International Inc.
+ * 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 version 2 as published by
+ * the Free Software Foundation.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/uio_driver.h>
+#include <linux/spinlock.h>
+#include <linux/bitops.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/stringify.h>
+#include <linux/pm_runtime.h>
+#include <linux/slab.h>
+
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/of_address.h>
+
+#define DRIVER_NAME "uio_pdrv_genirq"
+
+struct uio_pdrv_genirq_platdata {
+ struct uio_info *uioinfo;
+ spinlock_t lock;
+ unsigned long flags;
+ struct platform_device *pdev;
+};
+
+static int uio_pdrv_genirq_open(struct uio_info *info, struct inode *inode)
+{
+ struct uio_pdrv_genirq_platdata *priv = info->priv;
+
+ /* Wait until the Runtime PM code has woken up the device */
+ pm_runtime_get_sync(&priv->pdev->dev);
+ return 0;
+}
+
+static int uio_pdrv_genirq_release(struct uio_info *info, struct inode *inode)
+{
+ struct uio_pdrv_genirq_platdata *priv = info->priv;
+
+ /* Tell the Runtime PM code that the device has become idle */
+ pm_runtime_put_sync(&priv->pdev->dev);
+ return 0;
+}
+
+static irqreturn_t uio_pdrv_genirq_handler(int irq, struct uio_info *dev_info)
+{
+ struct uio_pdrv_genirq_platdata *priv = dev_info->priv;
+
+ /* Just disable the interrupt in the interrupt controller, and
+ * remember the state so we can allow user space to enable it later.
+ */
+
+ if (!test_and_set_bit(0, &priv->flags))
+ disable_irq_nosync(irq);
+
+ return IRQ_HANDLED;
+}
+
+static int uio_pdrv_genirq_irqcontrol(struct uio_info *dev_info, s32 irq_on)
+{
+ struct uio_pdrv_genirq_platdata *priv = dev_info->priv;
+ unsigned long flags;
+
+ /* Allow user space to enable and disable the interrupt
+ * in the interrupt controller, but keep track of the
+ * state to prevent per-irq depth damage.
+ *
+ * Serialize this operation to support multiple tasks.
+ */
+
+ spin_lock_irqsave(&priv->lock, flags);
+ if (irq_on) {
+ if (test_and_clear_bit(0, &priv->flags))
+ enable_irq(dev_info->irq);
+ } else {
+ if (!test_and_set_bit(0, &priv->flags))
+ disable_irq(dev_info->irq);
+ }
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ return 0;
+}
+
+static int uio_pdrv_genirq_probe(struct platform_device *pdev)
+{
+ struct uio_info *uioinfo = pdev->dev.platform_data;
+ struct uio_pdrv_genirq_platdata *priv;
+ struct uio_mem *uiomem;
+ int ret = -EINVAL;
+ int i;
+
+ if (!uioinfo) {
+ int irq;
+
+ /* alloc uioinfo for one device */
+ uioinfo = kzalloc(sizeof(*uioinfo), GFP_KERNEL);
+ if (!uioinfo) {
+ ret = -ENOMEM;
+ dev_err(&pdev->dev, "unable to kmalloc\n");
+ goto bad2;
+ }
+ uioinfo->name = pdev->dev.of_node->name;
+ uioinfo->version = "devicetree";
+
+ /* Multiple IRQs are not supported */
+ irq = platform_get_irq(pdev, 0);
+ if (irq == -ENXIO)
+ uioinfo->irq = UIO_IRQ_NONE;
+ else
+ uioinfo->irq = irq;
+ }
+
+ if (!uioinfo || !uioinfo->name || !uioinfo->version) {
+ dev_err(&pdev->dev, "missing platform_data\n");
+ goto bad0;
+ }
+
+ if (uioinfo->handler || uioinfo->irqcontrol ||
+ uioinfo->irq_flags & IRQF_SHARED) {
+ dev_err(&pdev->dev, "interrupt configuration error\n");
+ goto bad0;
+ }
+
+ priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+ if (!priv) {
+ ret = -ENOMEM;
+ dev_err(&pdev->dev, "unable to kmalloc\n");
+ goto bad0;
+ }
+
+ priv->uioinfo = uioinfo;
+ spin_lock_init(&priv->lock);
+ priv->flags = 0; /* interrupt is enabled to begin with */
+ priv->pdev = pdev;
+
+ uiomem = &uioinfo->mem[0];
+
+ for (i = 0; i < pdev->num_resources; ++i) {
+ struct resource *r = &pdev->resource[i];
+
+ if (r->flags != IORESOURCE_MEM)
+ continue;
+
+ if (uiomem >= &uioinfo->mem[MAX_UIO_MAPS]) {
+ dev_warn(&pdev->dev, "device has more than "
+ __stringify(MAX_UIO_MAPS)
+ " I/O memory resources.\n");
+ break;
+ }
+
+ uiomem->memtype = UIO_MEM_PHYS;
+ uiomem->addr = r->start;
+ uiomem->size = resource_size(r);
+ ++uiomem;
+ }
+
+ while (uiomem < &uioinfo->mem[MAX_UIO_MAPS]) {
+ uiomem->size = 0;
+ ++uiomem;
+ }
+
+ /* This driver requires no hardware specific kernel code to handle
+ * interrupts. Instead, the interrupt handler simply disables the
+ * interrupt in the interrupt controller. User space is responsible
+ * for performing hardware specific acknowledge and re-enabling of
+ * the interrupt in the interrupt controller.
+ *
+ * Interrupt sharing is not supported.
+ */
+
+ uioinfo->handler = uio_pdrv_genirq_handler;
+ uioinfo->irqcontrol = uio_pdrv_genirq_irqcontrol;
+ uioinfo->open = uio_pdrv_genirq_open;
+ uioinfo->release = uio_pdrv_genirq_release;
+ uioinfo->priv = priv;
+
+ /* Enable Runtime PM for this device:
+ * The device starts in suspended state to allow the hardware to be
+ * turned off by default. The Runtime PM bus code should power on the
+ * hardware and enable clocks at open().
+ */
+ pm_runtime_enable(&pdev->dev);
+
+ ret = uio_register_device(&pdev->dev, priv->uioinfo);
+ if (ret) {
+ dev_err(&pdev->dev, "unable to register uio device\n");
+ goto bad1;
+ }
+
+ platform_set_drvdata(pdev, priv);
+ return 0;
+ bad1:
+ kfree(priv);
+ pm_runtime_disable(&pdev->dev);
+ bad0:
+ /* kfree uioinfo for OF */
+ if (pdev->dev.of_node)
+ kfree(uioinfo);
+ bad2:
+ return ret;
+}
+
+static int uio_pdrv_genirq_remove(struct platform_device *pdev)
+{
+ struct uio_pdrv_genirq_platdata *priv = platform_get_drvdata(pdev);
+
+ uio_unregister_device(priv->uioinfo);
+ pm_runtime_disable(&pdev->dev);
+
+ priv->uioinfo->handler = NULL;
+ priv->uioinfo->irqcontrol = NULL;
+
+ /* kfree uioinfo for OF */
+ if (pdev->dev.of_node)
+ kfree(priv->uioinfo);
+
+ kfree(priv);
+ return 0;
+}
+
+static int uio_pdrv_genirq_runtime_nop(struct device *dev)
+{
+ /* Runtime PM callback shared between ->runtime_suspend()
+ * and ->runtime_resume(). Simply returns success.
+ *
+ * In this driver pm_runtime_get_sync() and pm_runtime_put_sync()
+ * are used at open() and release() time. This allows the
+ * Runtime PM code to turn off power to the device while the
+ * device is unused, ie before open() and after release().
+ *
+ * This Runtime PM callback does not need to save or restore
+ * any registers since user space is responsbile for hardware
+ * register reinitialization after open().
+ */
+ return 0;
+}
+
+static const struct dev_pm_ops uio_pdrv_genirq_dev_pm_ops = {
+ .runtime_suspend = uio_pdrv_genirq_runtime_nop,
+ .runtime_resume = uio_pdrv_genirq_runtime_nop,
+};
+
+#ifdef CONFIG_OF
+static const struct of_device_id uio_of_genirq_match[] = {
+ { /* empty for now */ },
+};
+MODULE_DEVICE_TABLE(of, uio_of_genirq_match);
+#else
+# define uio_of_genirq_match NULL
+#endif
+
+static struct platform_driver uio_pdrv_genirq = {
+ .probe = uio_pdrv_genirq_probe,
+ .remove = uio_pdrv_genirq_remove,
+ .driver = {
+ .name = DRIVER_NAME,
+ .owner = THIS_MODULE,
+ .pm = &uio_pdrv_genirq_dev_pm_ops,
+ .of_match_table = uio_of_genirq_match,
+ },
+};
+
+module_platform_driver(uio_pdrv_genirq);
+
+MODULE_AUTHOR("Magnus Damm");
+MODULE_DESCRIPTION("Userspace I/O platform driver with generic IRQ handling");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" DRIVER_NAME);
diff --git a/ap/os/linux/linux-3.4.x/drivers/uio/uio_pruss.c b/ap/os/linux/linux-3.4.x/drivers/uio/uio_pruss.c
new file mode 100644
index 0000000..33a7a27
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/uio/uio_pruss.c
@@ -0,0 +1,235 @@
+/*
+ * Programmable Real-Time Unit Sub System (PRUSS) UIO driver (uio_pruss)
+ *
+ * This driver exports PRUSS host event out interrupts and PRUSS, L3 RAM,
+ * and DDR RAM to user space for applications interacting with PRUSS firmware
+ *
+ * Copyright (C) 2010-11 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * 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.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/platform_device.h>
+#include <linux/uio_driver.h>
+#include <linux/platform_data/uio_pruss.h>
+#include <linux/io.h>
+#include <linux/clk.h>
+#include <linux/dma-mapping.h>
+#include <linux/slab.h>
+#include <mach/sram.h>
+
+#define DRV_NAME "pruss_uio"
+#define DRV_VERSION "1.0"
+
+static int sram_pool_sz = SZ_16K;
+module_param(sram_pool_sz, int, 0);
+MODULE_PARM_DESC(sram_pool_sz, "sram pool size to allocate ");
+
+static int extram_pool_sz = SZ_256K;
+module_param(extram_pool_sz, int, 0);
+MODULE_PARM_DESC(extram_pool_sz, "external ram pool size to allocate");
+
+/*
+ * Host event IRQ numbers from PRUSS - PRUSS can generate up to 8 interrupt
+ * events to AINTC of ARM host processor - which can be used for IPC b/w PRUSS
+ * firmware and user space application, async notification from PRU firmware
+ * to user space application
+ * 3 PRU_EVTOUT0
+ * 4 PRU_EVTOUT1
+ * 5 PRU_EVTOUT2
+ * 6 PRU_EVTOUT3
+ * 7 PRU_EVTOUT4
+ * 8 PRU_EVTOUT5
+ * 9 PRU_EVTOUT6
+ * 10 PRU_EVTOUT7
+*/
+#define MAX_PRUSS_EVT 8
+
+#define PINTC_HIDISR 0x0038
+#define PINTC_HIPIR 0x0900
+#define HIPIR_NOPEND 0x80000000
+#define PINTC_HIER 0x1500
+
+struct uio_pruss_dev {
+ struct uio_info *info;
+ struct clk *pruss_clk;
+ dma_addr_t sram_paddr;
+ dma_addr_t ddr_paddr;
+ void __iomem *prussio_vaddr;
+ void *sram_vaddr;
+ void *ddr_vaddr;
+ unsigned int hostirq_start;
+ unsigned int pintc_base;
+};
+
+static irqreturn_t pruss_handler(int irq, struct uio_info *info)
+{
+ struct uio_pruss_dev *gdev = info->priv;
+ int intr_bit = (irq - gdev->hostirq_start + 2);
+ int val, intr_mask = (1 << intr_bit);
+ void __iomem *base = gdev->prussio_vaddr + gdev->pintc_base;
+ void __iomem *intren_reg = base + PINTC_HIER;
+ void __iomem *intrdis_reg = base + PINTC_HIDISR;
+ void __iomem *intrstat_reg = base + PINTC_HIPIR + (intr_bit << 2);
+
+ val = ioread32(intren_reg);
+ /* Is interrupt enabled and active ? */
+ if (!(val & intr_mask) && (ioread32(intrstat_reg) & HIPIR_NOPEND))
+ return IRQ_NONE;
+ /* Disable interrupt */
+ iowrite32(intr_bit, intrdis_reg);
+ return IRQ_HANDLED;
+}
+
+static void pruss_cleanup(struct platform_device *dev,
+ struct uio_pruss_dev *gdev)
+{
+ int cnt;
+ struct uio_info *p = gdev->info;
+
+ for (cnt = 0; cnt < MAX_PRUSS_EVT; cnt++, p++) {
+ uio_unregister_device(p);
+ kfree(p->name);
+ }
+ iounmap(gdev->prussio_vaddr);
+ if (gdev->ddr_vaddr) {
+ dma_free_coherent(&dev->dev, extram_pool_sz, gdev->ddr_vaddr,
+ gdev->ddr_paddr);
+ }
+ if (gdev->sram_vaddr)
+ sram_free(gdev->sram_vaddr, sram_pool_sz);
+ kfree(gdev->info);
+ clk_put(gdev->pruss_clk);
+ kfree(gdev);
+}
+
+static int __devinit pruss_probe(struct platform_device *dev)
+{
+ struct uio_info *p;
+ struct uio_pruss_dev *gdev;
+ struct resource *regs_prussio;
+ int ret = -ENODEV, cnt = 0, len;
+ struct uio_pruss_pdata *pdata = dev->dev.platform_data;
+
+ gdev = kzalloc(sizeof(struct uio_pruss_dev), GFP_KERNEL);
+ if (!gdev)
+ return -ENOMEM;
+
+ gdev->info = kzalloc(sizeof(*p) * MAX_PRUSS_EVT, GFP_KERNEL);
+ if (!gdev->info) {
+ kfree(gdev);
+ return -ENOMEM;
+ }
+ /* Power on PRU in case its not done as part of boot-loader */
+ gdev->pruss_clk = clk_get(&dev->dev, "pruss");
+ if (IS_ERR(gdev->pruss_clk)) {
+ dev_err(&dev->dev, "Failed to get clock\n");
+ kfree(gdev->info);
+ kfree(gdev);
+ ret = PTR_ERR(gdev->pruss_clk);
+ return ret;
+ } else {
+ clk_enable(gdev->pruss_clk);
+ }
+
+ regs_prussio = platform_get_resource(dev, IORESOURCE_MEM, 0);
+ if (!regs_prussio) {
+ dev_err(&dev->dev, "No PRUSS I/O resource specified\n");
+ goto out_free;
+ }
+
+ if (!regs_prussio->start) {
+ dev_err(&dev->dev, "Invalid memory resource\n");
+ goto out_free;
+ }
+
+ gdev->sram_vaddr = sram_alloc(sram_pool_sz, &(gdev->sram_paddr));
+ if (!gdev->sram_vaddr) {
+ dev_err(&dev->dev, "Could not allocate SRAM pool\n");
+ goto out_free;
+ }
+
+ gdev->ddr_vaddr = dma_alloc_coherent(&dev->dev, extram_pool_sz,
+ &(gdev->ddr_paddr), GFP_KERNEL | GFP_DMA);
+ if (!gdev->ddr_vaddr) {
+ dev_err(&dev->dev, "Could not allocate external memory\n");
+ goto out_free;
+ }
+
+ len = resource_size(regs_prussio);
+ gdev->prussio_vaddr = ioremap(regs_prussio->start, len);
+ if (!gdev->prussio_vaddr) {
+ dev_err(&dev->dev, "Can't remap PRUSS I/O address range\n");
+ goto out_free;
+ }
+
+ gdev->pintc_base = pdata->pintc_base;
+ gdev->hostirq_start = platform_get_irq(dev, 0);
+
+ for (cnt = 0, p = gdev->info; cnt < MAX_PRUSS_EVT; cnt++, p++) {
+ p->mem[0].addr = regs_prussio->start;
+ p->mem[0].size = resource_size(regs_prussio);
+ p->mem[0].memtype = UIO_MEM_PHYS;
+
+ p->mem[1].addr = gdev->sram_paddr;
+ p->mem[1].size = sram_pool_sz;
+ p->mem[1].memtype = UIO_MEM_PHYS;
+
+ p->mem[2].addr = gdev->ddr_paddr;
+ p->mem[2].size = extram_pool_sz;
+ p->mem[2].memtype = UIO_MEM_PHYS;
+
+ p->name = kasprintf(GFP_KERNEL, "pruss_evt%d", cnt);
+ p->version = DRV_VERSION;
+
+ /* Register PRUSS IRQ lines */
+ p->irq = gdev->hostirq_start + cnt;
+ p->handler = pruss_handler;
+ p->priv = gdev;
+
+ ret = uio_register_device(&dev->dev, p);
+ if (ret < 0)
+ goto out_free;
+ }
+
+ platform_set_drvdata(dev, gdev);
+ return 0;
+
+out_free:
+ pruss_cleanup(dev, gdev);
+ return ret;
+}
+
+static int __devexit pruss_remove(struct platform_device *dev)
+{
+ struct uio_pruss_dev *gdev = platform_get_drvdata(dev);
+
+ pruss_cleanup(dev, gdev);
+ platform_set_drvdata(dev, NULL);
+ return 0;
+}
+
+static struct platform_driver pruss_driver = {
+ .probe = pruss_probe,
+ .remove = __devexit_p(pruss_remove),
+ .driver = {
+ .name = DRV_NAME,
+ .owner = THIS_MODULE,
+ },
+};
+
+module_platform_driver(pruss_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_VERSION(DRV_VERSION);
+MODULE_AUTHOR("Amit Chatterjee <amit.chatterjee@ti.com>");
+MODULE_AUTHOR("Pratheesh Gangadhar <pratheesh@ti.com>");
diff --git a/ap/os/linux/linux-3.4.x/drivers/uio/uio_sercos3.c b/ap/os/linux/linux-3.4.x/drivers/uio/uio_sercos3.c
new file mode 100644
index 0000000..a187fa1
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/uio/uio_sercos3.c
@@ -0,0 +1,244 @@
+/* sercos3: UIO driver for the Automata Sercos III PCI card
+
+ Copyright (C) 2008 Linutronix GmbH
+ Author: John Ogness <john.ogness@linutronix.de>
+
+ This is a straight-forward UIO driver, where interrupts are disabled
+ by the interrupt handler and re-enabled via a write to the UIO device
+ by the userspace-part.
+
+ The only part that may seem odd is the use of a logical OR when
+ storing and restoring enabled interrupts. This is done because the
+ userspace-part could directly modify the Interrupt Enable Register
+ at any time. To reduce possible conflicts, the kernel driver uses
+ a logical OR to make more controlled changes (rather than blindly
+ overwriting previous values).
+
+ Race conditions exist if the userspace-part directly modifies the
+ Interrupt Enable Register while in operation. The consequences are
+ that certain interrupts would fail to be enabled or disabled. For
+ this reason, the userspace-part should only directly modify the
+ Interrupt Enable Register at the beginning (to get things going).
+ The userspace-part can safely disable interrupts at any time using
+ a write to the UIO device.
+*/
+
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/uio_driver.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+
+/* ID's for SERCOS III PCI card (PLX 9030) */
+#define SERCOS_SUB_VENDOR_ID 0x1971
+#define SERCOS_SUB_SYSID_3530 0x3530
+#define SERCOS_SUB_SYSID_3535 0x3535
+#define SERCOS_SUB_SYSID_3780 0x3780
+
+/* Interrupt Enable Register */
+#define IER0_OFFSET 0x08
+
+/* Interrupt Status Register */
+#define ISR0_OFFSET 0x18
+
+struct sercos3_priv {
+ u32 ier0_cache;
+ spinlock_t ier0_cache_lock;
+};
+
+/* this function assumes ier0_cache_lock is locked! */
+static void sercos3_disable_interrupts(struct uio_info *info,
+ struct sercos3_priv *priv)
+{
+ void __iomem *ier0 = info->mem[3].internal_addr + IER0_OFFSET;
+
+ /* add enabled interrupts to cache */
+ priv->ier0_cache |= ioread32(ier0);
+
+ /* disable interrupts */
+ iowrite32(0, ier0);
+}
+
+/* this function assumes ier0_cache_lock is locked! */
+static void sercos3_enable_interrupts(struct uio_info *info,
+ struct sercos3_priv *priv)
+{
+ void __iomem *ier0 = info->mem[3].internal_addr + IER0_OFFSET;
+
+ /* restore previously enabled interrupts */
+ iowrite32(ioread32(ier0) | priv->ier0_cache, ier0);
+ priv->ier0_cache = 0;
+}
+
+static irqreturn_t sercos3_handler(int irq, struct uio_info *info)
+{
+ struct sercos3_priv *priv = info->priv;
+ void __iomem *isr0 = info->mem[3].internal_addr + ISR0_OFFSET;
+ void __iomem *ier0 = info->mem[3].internal_addr + IER0_OFFSET;
+
+ if (!(ioread32(isr0) & ioread32(ier0)))
+ return IRQ_NONE;
+
+ spin_lock(&priv->ier0_cache_lock);
+ sercos3_disable_interrupts(info, priv);
+ spin_unlock(&priv->ier0_cache_lock);
+
+ return IRQ_HANDLED;
+}
+
+static int sercos3_irqcontrol(struct uio_info *info, s32 irq_on)
+{
+ struct sercos3_priv *priv = info->priv;
+
+ spin_lock_irq(&priv->ier0_cache_lock);
+ if (irq_on)
+ sercos3_enable_interrupts(info, priv);
+ else
+ sercos3_disable_interrupts(info, priv);
+ spin_unlock_irq(&priv->ier0_cache_lock);
+
+ return 0;
+}
+
+static int sercos3_setup_iomem(struct pci_dev *dev, struct uio_info *info,
+ int n, int pci_bar)
+{
+ info->mem[n].addr = pci_resource_start(dev, pci_bar);
+ if (!info->mem[n].addr)
+ return -1;
+ info->mem[n].internal_addr = ioremap(pci_resource_start(dev, pci_bar),
+ pci_resource_len(dev, pci_bar));
+ if (!info->mem[n].internal_addr)
+ return -1;
+ info->mem[n].size = pci_resource_len(dev, pci_bar);
+ info->mem[n].memtype = UIO_MEM_PHYS;
+ return 0;
+}
+
+static int __devinit sercos3_pci_probe(struct pci_dev *dev,
+ const struct pci_device_id *id)
+{
+ struct uio_info *info;
+ struct sercos3_priv *priv;
+ int i;
+
+ info = kzalloc(sizeof(struct uio_info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ priv = kzalloc(sizeof(struct sercos3_priv), GFP_KERNEL);
+ if (!priv)
+ goto out_free;
+
+ if (pci_enable_device(dev))
+ goto out_free_priv;
+
+ if (pci_request_regions(dev, "sercos3"))
+ goto out_disable;
+
+ /* we only need PCI BAR's 0, 2, 3, 4, 5 */
+ if (sercos3_setup_iomem(dev, info, 0, 0))
+ goto out_unmap;
+ if (sercos3_setup_iomem(dev, info, 1, 2))
+ goto out_unmap;
+ if (sercos3_setup_iomem(dev, info, 2, 3))
+ goto out_unmap;
+ if (sercos3_setup_iomem(dev, info, 3, 4))
+ goto out_unmap;
+ if (sercos3_setup_iomem(dev, info, 4, 5))
+ goto out_unmap;
+
+ spin_lock_init(&priv->ier0_cache_lock);
+ info->priv = priv;
+ info->name = "Sercos_III_PCI";
+ info->version = "0.0.1";
+ info->irq = dev->irq;
+ info->irq_flags = IRQF_SHARED;
+ info->handler = sercos3_handler;
+ info->irqcontrol = sercos3_irqcontrol;
+
+ pci_set_drvdata(dev, info);
+
+ if (uio_register_device(&dev->dev, info))
+ goto out_unmap;
+
+ return 0;
+
+out_unmap:
+ for (i = 0; i < 5; i++) {
+ if (info->mem[i].internal_addr)
+ iounmap(info->mem[i].internal_addr);
+ }
+ pci_release_regions(dev);
+out_disable:
+ pci_disable_device(dev);
+out_free_priv:
+ kfree(priv);
+out_free:
+ kfree(info);
+ return -ENODEV;
+}
+
+static void sercos3_pci_remove(struct pci_dev *dev)
+{
+ struct uio_info *info = pci_get_drvdata(dev);
+ int i;
+
+ uio_unregister_device(info);
+ pci_release_regions(dev);
+ pci_disable_device(dev);
+ pci_set_drvdata(dev, NULL);
+ for (i = 0; i < 5; i++) {
+ if (info->mem[i].internal_addr)
+ iounmap(info->mem[i].internal_addr);
+ }
+ kfree(info->priv);
+ kfree(info);
+}
+
+static struct pci_device_id sercos3_pci_ids[] __devinitdata = {
+ {
+ .vendor = PCI_VENDOR_ID_PLX,
+ .device = PCI_DEVICE_ID_PLX_9030,
+ .subvendor = SERCOS_SUB_VENDOR_ID,
+ .subdevice = SERCOS_SUB_SYSID_3530,
+ },
+ {
+ .vendor = PCI_VENDOR_ID_PLX,
+ .device = PCI_DEVICE_ID_PLX_9030,
+ .subvendor = SERCOS_SUB_VENDOR_ID,
+ .subdevice = SERCOS_SUB_SYSID_3535,
+ },
+ {
+ .vendor = PCI_VENDOR_ID_PLX,
+ .device = PCI_DEVICE_ID_PLX_9030,
+ .subvendor = SERCOS_SUB_VENDOR_ID,
+ .subdevice = SERCOS_SUB_SYSID_3780,
+ },
+ { 0, }
+};
+
+static struct pci_driver sercos3_pci_driver = {
+ .name = "sercos3",
+ .id_table = sercos3_pci_ids,
+ .probe = sercos3_pci_probe,
+ .remove = sercos3_pci_remove,
+};
+
+static int __init sercos3_init_module(void)
+{
+ return pci_register_driver(&sercos3_pci_driver);
+}
+
+static void __exit sercos3_exit_module(void)
+{
+ pci_unregister_driver(&sercos3_pci_driver);
+}
+
+module_init(sercos3_init_module);
+module_exit(sercos3_exit_module);
+
+MODULE_DESCRIPTION("UIO driver for the Automata Sercos III PCI card");
+MODULE_AUTHOR("John Ogness <john.ogness@linutronix.de>");
+MODULE_LICENSE("GPL v2");