1 files changed, 0 insertions, 471 deletions
diff --git a/driver/ioctl.c b/driver/ioctl.c
deleted file mode 100644
index 2d4af73..0000000
--- a/driver/ioctl.c
+++ /dev/null
@@ -1,471 +0,0 @@
-/**
- *
- * @file ioctl.c
- * @author Guillermo Marcus
- * @date 2009-04-05
- * @brief Contains the functions handling the different ioctl calls.
- *
- */
-#include <linux/version.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/cdev.h>
-#include <linux/sysfs.h>
-#include <asm/atomic.h>
-#include <linux/pagemap.h>
-#include <linux/spinlock.h>
-#include <linux/list.h>
-#include <asm/scatterlist.h>
-#include <linux/vmalloc.h>
-#include <linux/stat.h>
-#include <linux/interrupt.h>
-#include <linux/wait.h>
-#include <linux/sched.h>
-
-#include "config.h" 			/* Configuration for the driver */
-#include "compat.h" 			/* Compatibility functions/definitions */
-#include "pciDriver.h" 			/* External interface for the driver */
-#include "common.h" 			/* Internal definitions for all parts */
-#include "kmem.h" 			/* Internal definitions for kernel memory */
-#include "umem.h" 			/* Internal definitions for user space memory */
-#include "ioctl.h"			/* Internal definitions for the ioctl part */
-
-/** Declares a variable of the given type with the given name and copies it from userspace */
-#define READ_FROM_USER(type, name) \
-	type name; \
-	if ((ret = copy_from_user(&name, (type*)arg, sizeof(name))) != 0) \
-		return -EFAULT;
-
-/** Writes back the given variable with the given type to userspace */
-#define WRITE_TO_USER(type, name) \
-	if ((ret = copy_to_user((type*)arg, &name, sizeof(name))) != 0) \
-		return -EFAULT;
-
-/**
- *
- * Sets the mmap mode for following mmap() calls.
- *
- * @param arg Not a pointer, but either PCIDRIVER_MMAP_PCI or PCIDRIVER_MMAP_KMEM
- *
- */
-static int ioctl_mmap_mode(pcidriver_privdata_t *privdata, unsigned long arg)
-{
-	if ((arg != PCIDRIVER_MMAP_PCI) && (arg != PCIDRIVER_MMAP_KMEM))
-		return -EINVAL;
-
-	/* change the mode */
-	privdata->mmap_mode = arg;
-
-	return 0;
-}
-
-/**
- *
- * Sets the mmap area (BAR) for following mmap() calls.
- *
- */
-static int ioctl_mmap_area(pcidriver_privdata_t *privdata, unsigned long arg)
-{
-	/* validate input */
-	if ((arg < PCIDRIVER_BAR0) || (arg > PCIDRIVER_BAR5))
-		return -EINVAL;
-
-	/* change the PCI area to mmap */
-	privdata->mmap_area = arg;
-
-	return 0;
-}
-
-/**
- *
- * Reads/writes a byte/word/dword of the device's PCI config.
- *
- * @see pcidriver_pci_read
- * @see pcidriver_pci_write
- *
- */
-static int ioctl_pci_config_read_write(pcidriver_privdata_t *privdata, unsigned int cmd, unsigned long arg)
-{
-	int ret;
-	READ_FROM_USER(pci_cfg_cmd, pci_cmd);
-
-	if (cmd == PCIDRIVER_IOC_PCI_CFG_RD) {
-		switch (pci_cmd.size) {
-			case PCIDRIVER_PCI_CFG_SZ_BYTE:
-				ret = pci_read_config_byte( privdata->pdev, pci_cmd.addr, &(pci_cmd.val.byte) );
-				break;
-			case PCIDRIVER_PCI_CFG_SZ_WORD:
-				ret = pci_read_config_word( privdata->pdev, pci_cmd.addr, &(pci_cmd.val.word) );
-				break;
-			case PCIDRIVER_PCI_CFG_SZ_DWORD:
-				ret = pci_read_config_dword( privdata->pdev, pci_cmd.addr, &(pci_cmd.val.dword) );
-				break;
-			default:
-				return -EINVAL;		/* Wrong size setting */
-		}
-	} else {
-		switch (pci_cmd.size) {
-			case PCIDRIVER_PCI_CFG_SZ_BYTE:
-				ret = pci_write_config_byte( privdata->pdev, pci_cmd.addr, pci_cmd.val.byte );
-				break;
-			case PCIDRIVER_PCI_CFG_SZ_WORD:
-				ret = pci_write_config_word( privdata->pdev, pci_cmd.addr, pci_cmd.val.word );
-				break;
-			case PCIDRIVER_PCI_CFG_SZ_DWORD:
-				ret = pci_write_config_dword( privdata->pdev, pci_cmd.addr, pci_cmd.val.dword );
-				break;
-			default:
-				return -EINVAL;		/* Wrong size setting */
-				break;
-		}
-	}
-
-	WRITE_TO_USER(pci_cfg_cmd, pci_cmd);
-
-	return 0;
-}
-
-/**
- *
- * Gets the PCI information for the device.
- *
- * @see pcidriver_pci_info
- *
- */
-static int ioctl_pci_info(pcidriver_privdata_t *privdata, unsigned long arg)
-{
-	int ret;
-	int bar;
-	READ_FROM_USER(pcilib_board_info_t, pci_info);
-
-	pci_info.vendor_id = privdata->pdev->vendor;
-	pci_info.device_id = privdata->pdev->device;
-	pci_info.bus = privdata->pdev->bus->number;
-	pci_info.slot = PCI_SLOT(privdata->pdev->devfn);
-	pci_info.devfn = privdata->pdev->devfn;
-	pci_info.func = PCI_FUNC(privdata->pdev->devfn);
-
-	if ((ret = pci_read_config_byte(privdata->pdev, PCI_INTERRUPT_PIN, &(pci_info.interrupt_pin))) != 0)
-		return ret;
-
-	if ((ret = pci_read_config_byte(privdata->pdev, PCI_INTERRUPT_LINE, &(pci_info.interrupt_line))) != 0)
-		return ret;
-
-	for (bar = 0; bar < 6; bar++) {
-		pci_info.bar_start[bar] = pci_resource_start(privdata->pdev, bar);
-		pci_info.bar_length[bar] = pci_resource_len(privdata->pdev, bar);
-		pci_info.bar_flags[bar] = pci_resource_flags(privdata->pdev, bar);
-	}
-
-	WRITE_TO_USER(pcilib_board_info_t, pci_info);
-
-	return 0;
-}
-
-/**
- *
- * Allocates kernel memory.
- *
- * @see pcidriver_kmem_alloc
- *
- */
-static int ioctl_kmem_alloc(pcidriver_privdata_t *privdata, unsigned long arg)
-{
-	int ret;
-	READ_FROM_USER(kmem_handle_t, khandle);
-
-	if ((ret = pcidriver_kmem_alloc(privdata, &khandle)) != 0)
-		return ret;
-
-	WRITE_TO_USER(kmem_handle_t, khandle);
-
-	return 0;
-}
-
-/**
- *
- * Frees kernel memory.
- *
- * @see pcidriver_kmem_free
- *
- */
-static int ioctl_kmem_free(pcidriver_privdata_t *privdata, unsigned long arg)
-{
-	int ret;
-	READ_FROM_USER(kmem_handle_t, khandle);
-
-	if ((ret = pcidriver_kmem_free(privdata, &khandle)) != 0)
-		return ret;
-
-	return 0;
-}
-
-/**
- *
- * Syncs kernel memory.
- *
- * @see pcidriver_kmem_sync
- *
- */
-static int ioctl_kmem_sync(pcidriver_privdata_t *privdata, unsigned long arg)
-{
-	int ret;
-	READ_FROM_USER(kmem_sync_t, ksync);
-
-	if ((ret =  pcidriver_kmem_sync(privdata, &ksync)) != 0)
-	    return ret;
-	
-	WRITE_TO_USER(kmem_sync_t, ksync);
-	
-	return 0;
-}
-
-/*
- *
- * Maps the given scatter/gather list from memory to PCI bus addresses.
- *
- * @see pcidriver_umem_sgmap
- *
- */
-static int ioctl_umem_sgmap(pcidriver_privdata_t *privdata, unsigned long arg)
-{
-	int ret;
-	READ_FROM_USER(umem_handle_t, uhandle);
-
-	if ((ret = pcidriver_umem_sgmap(privdata, &uhandle)) != 0)
-		return ret;
-
-	WRITE_TO_USER(umem_handle_t, uhandle);
-
-	return 0;
-}
-
-/**
- *
- * Unmaps the given scatter/gather list.
- *
- * @see pcidriver_umem_sgunmap
- *
- */
-static int ioctl_umem_sgunmap(pcidriver_privdata_t *privdata, unsigned long arg)
-{
-	int ret;
-	pcidriver_umem_entry_t *umem_entry;
-	READ_FROM_USER(umem_handle_t, uhandle);
-
-	/* Find the associated umem_entry for this buffer,
-	 * return -EINVAL if the specified handle id is invalid */
-	if ((umem_entry = pcidriver_umem_find_entry_id(privdata, uhandle.handle_id)) == NULL)
-		return -EINVAL;
-
-	if ((ret = pcidriver_umem_sgunmap(privdata, umem_entry)) != 0)
-		return ret;
-
-	return 0;
-}
-
-/**
- *
- * Copies the scatter/gather list from kernelspace to userspace.
- *
- * @see pcidriver_umem_sgget
- *
- */
-static int ioctl_umem_sgget(pcidriver_privdata_t *privdata, unsigned long arg)
-{
-	int ret;
-	READ_FROM_USER(umem_sglist_t, usglist);
-
-	/* The umem_sglist_t has a pointer to the scatter/gather list itself which
-	 * needs to be copied separately. The number of elements is stored in ->nents.
-	 * As the list can get very big, we need to use vmalloc. */
-	if ((usglist.sg = vmalloc(usglist.nents * sizeof(umem_sgentry_t))) == NULL)
-		return -ENOMEM;
-
-	/* copy array to kernel structure */
-	ret = copy_from_user(usglist.sg, ((umem_sglist_t *)arg)->sg, (usglist.nents)*sizeof(umem_sgentry_t));
-	if (ret) return -EFAULT;
-
-	if ((ret = pcidriver_umem_sgget(privdata, &usglist)) != 0)
-		return ret;
-
-	/* write data to user space */
-	ret = copy_to_user(((umem_sglist_t *)arg)->sg, usglist.sg, (usglist.nents)*sizeof(umem_sgentry_t));
-	if (ret) return -EFAULT;
-
-	/* free array memory */
-	vfree(usglist.sg);
-
-	/* restore sg pointer to vma address in user space before copying */
-	usglist.sg = ((umem_sglist_t *)arg)->sg;
-
-	WRITE_TO_USER(umem_sglist_t, usglist);
-
-	return 0;
-}
-
-/**
- *
- * Syncs user memory.
- *
- * @see pcidriver_umem_sync
- *
- */
-static int ioctl_umem_sync(pcidriver_privdata_t *privdata, unsigned long arg)
-{
-	int ret;
-	READ_FROM_USER(umem_handle_t, uhandle);
-
-	return pcidriver_umem_sync( privdata, &uhandle );
-}
-
-/**
- *
- * Waits for an interrupt
- *
- * @param arg Not a pointer, but the irq source to wait for (unsigned int)
- *
- */
-static int ioctl_wait_interrupt(pcidriver_privdata_t *privdata, unsigned long arg)
-{
-#ifdef ENABLE_IRQ
-	int ret;
-	unsigned long timeout;
-	unsigned int irq_source;
-	unsigned long temp = 0;
-
-	READ_FROM_USER(interrupt_wait_t, irq_handle);
-
-	irq_source = irq_handle.source;
-
-	if (irq_source >= PCIDRIVER_INT_MAXSOURCES)
-		return -EFAULT;						/* User tried to overrun the IRQ_SOURCES array */
-
-	timeout = jiffies + (irq_handle.timeout * HZ / 1000000);
-
-	/* Thanks to Joern for the correction and tips! */
-	/* done this way to avoid wrong behaviour (endless loop) of the compiler in AMD platforms */
-	do {
-		/* We wait here with an interruptible timeout. This will be interrupted
-                 * by int.c:check_acknowledge_channel() as soon as in interrupt for
-                 * the specified source arrives. */
-		wait_event_interruptible_timeout( (privdata->irq_queues[irq_source]), (atomic_read(&(privdata->irq_outstanding[irq_source])) > 0), (10*HZ/1000) );
-
-		if (atomic_add_negative( -1, &(privdata->irq_outstanding[irq_source])) )
-			atomic_inc( &(privdata->irq_outstanding[irq_source]) );
-		else
-			temp = 1;
-	} while ((!temp)&&(jiffies < timeout));
-	
-	if ((temp)&&(irq_handle.count)) {
-	    while (!atomic_add_negative( -1, &(privdata->irq_outstanding[irq_source]))) temp++;
-	    atomic_inc( &(privdata->irq_outstanding[irq_source]) );
-	}
-	
-	irq_handle.count = temp;
-
-	WRITE_TO_USER(interrupt_wait_t, irq_handle);
-
-	return 0;
-#else
-	mod_info("Asked to wait for interrupt but interrupts are not enabled in the driver\n");
-	return -EFAULT;
-#endif
-}
-
-/**
- *
- * Clears the interrupt wait queue.
- *
- * @param arg Not a pointer, but the irq source (unsigned int)
- * @returns -EFAULT if the user specified an irq source out of range
- *
- */
-static int ioctl_clear_ioq(pcidriver_privdata_t *privdata, unsigned long arg)
-{
-#ifdef ENABLE_IRQ
-	unsigned int irq_source;
-
-	if (arg >= PCIDRIVER_INT_MAXSOURCES)
-		return -EFAULT;
-
-	irq_source = arg;
-	atomic_set(&(privdata->irq_outstanding[irq_source]), 0);
-
-	return 0;
-#else
-	mod_info("Asked to wait for interrupt but interrupts are not enabled in the driver\n");
-	return -EFAULT;
-#endif
-}
-
-/**
- *
- * This function handles all ioctl file operations.
- * Generally, the data of the ioctl is copied from userspace to kernelspace, a separate
- * function is called to handle the ioctl itself, then the data is copied back to userspace.
- *
- * @returns -EFAULT when an invalid memory pointer is passed
- *
- */
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,11)
-int pcidriver_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg)
-#else
-long pcidriver_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
-#endif
-{
-	pcidriver_privdata_t *privdata = filp->private_data;
-
-	/* Select the appropiate command */
-	switch (cmd) {
-		case PCIDRIVER_IOC_MMAP_MODE:
-			return ioctl_mmap_mode(privdata, arg);
-
-		case PCIDRIVER_IOC_MMAP_AREA:
-			return ioctl_mmap_area(privdata, arg);
-
-		case PCIDRIVER_IOC_PCI_CFG_RD:
-		case PCIDRIVER_IOC_PCI_CFG_WR:
-			return ioctl_pci_config_read_write(privdata, cmd, arg);
-
-		case PCIDRIVER_IOC_PCI_INFO:
-			return ioctl_pci_info(privdata, arg);
-
-		case PCIDRIVER_IOC_KMEM_ALLOC:
-			return ioctl_kmem_alloc(privdata, arg);
-
-		case PCIDRIVER_IOC_KMEM_FREE:
-			return ioctl_kmem_free(privdata, arg);
-
-		case PCIDRIVER_IOC_KMEM_SYNC:
-			return ioctl_kmem_sync(privdata, arg);
-
-		case PCIDRIVER_IOC_UMEM_SGMAP:
-			return ioctl_umem_sgmap(privdata, arg);
-
-		case PCIDRIVER_IOC_UMEM_SGUNMAP:
-			return ioctl_umem_sgunmap(privdata, arg);
-
-		case PCIDRIVER_IOC_UMEM_SGGET:
-			return ioctl_umem_sgget(privdata, arg);
-
-		case PCIDRIVER_IOC_UMEM_SYNC:
-			return ioctl_umem_sync(privdata, arg);
-
-		case PCIDRIVER_IOC_WAITI:
-			return ioctl_wait_interrupt(privdata, arg);
-
-		case PCIDRIVER_IOC_CLEAR_IOQ:
-			return ioctl_clear_ioq(privdata, arg);
-
-		default:
-			return -EINVAL;
-	}
-}