1 files changed, 0 insertions, 410 deletions
diff --git a/libdde_linux26/contrib/drivers/pci/access.c b/libdde_linux26/contrib/drivers/pci/access.c
deleted file mode 100644
index 9d05aea2..00000000
--- a/libdde_linux26/contrib/drivers/pci/access.c
+++ /dev/null
@@ -1,410 +0,0 @@
-#include <linux/delay.h>
-#include <linux/pci.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/ioport.h>
-#include <linux/wait.h>
-
-#include "pci.h"
-#include <ddekit/timer.h>
-
-/*
- * This interrupt-safe spinlock protects all accesses to PCI
- * configuration space.
- */
-
-static DEFINE_SPINLOCK(pci_lock);
-
-/*
- *  Wrappers for all PCI configuration access functions.  They just check
- *  alignment, do locking and call the low-level functions pointed to
- *  by pci_dev->ops.
- */
-
-#define PCI_byte_BAD 0
-#define PCI_word_BAD (pos & 1)
-#define PCI_dword_BAD (pos & 3)
-
-#define PCI_OP_READ(size,type,len) \
-int pci_bus_read_config_##size \
-	(struct pci_bus *bus, unsigned int devfn, int pos, type *value)	\
-{									\
-	int res;							\
-	unsigned long flags;						\
-	u32 data = 0;							\
-	if (PCI_##size##_BAD) return PCIBIOS_BAD_REGISTER_NUMBER;	\
-	spin_lock_irqsave(&pci_lock, flags);				\
-	res = bus->ops->read(bus, devfn, pos, len, &data);		\
-	*value = (type)data;						\
-	spin_unlock_irqrestore(&pci_lock, flags);			\
-	return res;							\
-}
-
-#define PCI_OP_WRITE(size,type,len) \
-int pci_bus_write_config_##size \
-	(struct pci_bus *bus, unsigned int devfn, int pos, type value)	\
-{									\
-	int res;							\
-	unsigned long flags;						\
-	if (PCI_##size##_BAD) return PCIBIOS_BAD_REGISTER_NUMBER;	\
-	spin_lock_irqsave(&pci_lock, flags);				\
-	res = bus->ops->write(bus, devfn, pos, len, value);		\
-	spin_unlock_irqrestore(&pci_lock, flags);			\
-	return res;							\
-}
-
-PCI_OP_READ(byte, u8, 1)
-PCI_OP_READ(word, u16, 2)
-PCI_OP_READ(dword, u32, 4)
-PCI_OP_WRITE(byte, u8, 1)
-PCI_OP_WRITE(word, u16, 2)
-PCI_OP_WRITE(dword, u32, 4)
-
-EXPORT_SYMBOL(pci_bus_read_config_byte);
-EXPORT_SYMBOL(pci_bus_read_config_word);
-EXPORT_SYMBOL(pci_bus_read_config_dword);
-EXPORT_SYMBOL(pci_bus_write_config_byte);
-EXPORT_SYMBOL(pci_bus_write_config_word);
-EXPORT_SYMBOL(pci_bus_write_config_dword);
-
-
-/**
- * pci_read_vpd - Read one entry from Vital Product Data
- * @dev:	pci device struct
- * @pos:	offset in vpd space
- * @count:	number of bytes to read
- * @buf:	pointer to where to store result
- *
- */
-ssize_t pci_read_vpd(struct pci_dev *dev, loff_t pos, size_t count, void *buf)
-{
-	if (!dev->vpd || !dev->vpd->ops)
-		return -ENODEV;
-	return dev->vpd->ops->read(dev, pos, count, buf);
-}
-EXPORT_SYMBOL(pci_read_vpd);
-
-/**
- * pci_write_vpd - Write entry to Vital Product Data
- * @dev:	pci device struct
- * @pos:	offset in vpd space
- * @count:	number of bytes to read
- * @val:	value to write
- *
- */
-ssize_t pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void *buf)
-{
-	if (!dev->vpd || !dev->vpd->ops)
-		return -ENODEV;
-	return dev->vpd->ops->write(dev, pos, count, buf);
-}
-EXPORT_SYMBOL(pci_write_vpd);
-
-/*
- * The following routines are to prevent the user from accessing PCI config
- * space when it's unsafe to do so.  Some devices require this during BIST and
- * we're required to prevent it during D-state transitions.
- *
- * We have a bit per device to indicate it's blocked and a global wait queue
- * for callers to sleep on until devices are unblocked.
- */
-static DECLARE_WAIT_QUEUE_HEAD(pci_ucfg_wait);
-
-static noinline void pci_wait_ucfg(struct pci_dev *dev)
-{
-	DECLARE_WAITQUEUE(wait, current);
-
-	__add_wait_queue(&pci_ucfg_wait, &wait);
-	do {
-		set_current_state(TASK_UNINTERRUPTIBLE);
-		spin_unlock_irq(&pci_lock);
-		schedule();
-		spin_lock_irq(&pci_lock);
-	} while (dev->block_ucfg_access);
-	__remove_wait_queue(&pci_ucfg_wait, &wait);
-}
-
-#define PCI_USER_READ_CONFIG(size,type)					\
-int pci_user_read_config_##size						\
-	(struct pci_dev *dev, int pos, type *val)			\
-{									\
-	int ret = 0;							\
-	u32 data = -1;							\
-	if (PCI_##size##_BAD) return PCIBIOS_BAD_REGISTER_NUMBER;	\
-	spin_lock_irq(&pci_lock);					\
-	if (unlikely(dev->block_ucfg_access)) pci_wait_ucfg(dev);	\
-	ret = dev->bus->ops->read(dev->bus, dev->devfn,			\
-					pos, sizeof(type), &data);	\
-	spin_unlock_irq(&pci_lock);					\
-	*val = (type)data;						\
-	return ret;							\
-}
-
-#define PCI_USER_WRITE_CONFIG(size,type)				\
-int pci_user_write_config_##size					\
-	(struct pci_dev *dev, int pos, type val)			\
-{									\
-	int ret = -EIO;							\
-	if (PCI_##size##_BAD) return PCIBIOS_BAD_REGISTER_NUMBER;	\
-	spin_lock_irq(&pci_lock);					\
-	if (unlikely(dev->block_ucfg_access)) pci_wait_ucfg(dev);	\
-	ret = dev->bus->ops->write(dev->bus, dev->devfn,		\
-					pos, sizeof(type), val);	\
-	spin_unlock_irq(&pci_lock);					\
-	return ret;							\
-}
-
-PCI_USER_READ_CONFIG(byte, u8)
-PCI_USER_READ_CONFIG(word, u16)
-PCI_USER_READ_CONFIG(dword, u32)
-PCI_USER_WRITE_CONFIG(byte, u8)
-PCI_USER_WRITE_CONFIG(word, u16)
-PCI_USER_WRITE_CONFIG(dword, u32)
-
-/* VPD access through PCI 2.2+ VPD capability */
-
-#define PCI_VPD_PCI22_SIZE (PCI_VPD_ADDR_MASK + 1)
-
-struct pci_vpd_pci22 {
-	struct pci_vpd base;
-	struct mutex lock;
-	u16	flag;
-	bool	busy;
-	u8	cap;
-};
-
-/*
- * Wait for last operation to complete.
- * This code has to spin since there is no other notification from the PCI
- * hardware. Since the VPD is often implemented by serial attachment to an
- * EEPROM, it may take many milliseconds to complete.
- */
-static int pci_vpd_pci22_wait(struct pci_dev *dev)
-{
-	struct pci_vpd_pci22 *vpd =
-		container_of(dev->vpd, struct pci_vpd_pci22, base);
-	unsigned long timeout = jiffies + HZ/20 + 2;
-	u16 status;
-	int ret;
-
-	if (!vpd->busy)
-		return 0;
-
-	for (;;) {
-		ret = pci_user_read_config_word(dev, vpd->cap + PCI_VPD_ADDR,
-						&status);
-		if (ret)
-			return ret;
-
-		if ((status & PCI_VPD_ADDR_F) == vpd->flag) {
-			vpd->busy = false;
-			return 0;
-		}
-
-		if (time_after(jiffies, timeout))
-			return -ETIMEDOUT;
-		if (fatal_signal_pending(current))
-			return -EINTR;
-		if (!cond_resched())
-			udelay(10);
-	}
-}
-
-static ssize_t pci_vpd_pci22_read(struct pci_dev *dev, loff_t pos, size_t count,
-				  void *arg)
-{
-	struct pci_vpd_pci22 *vpd =
-		container_of(dev->vpd, struct pci_vpd_pci22, base);
-	int ret;
-	loff_t end = pos + count;
-	u8 *buf = arg;
-
-	if (pos < 0 || pos > vpd->base.len || end > vpd->base.len)
-		return -EINVAL;
-
-	if (mutex_lock_killable(&vpd->lock))
-		return -EINTR;
-
-	ret = pci_vpd_pci22_wait(dev);
-	if (ret < 0)
-		goto out;
-
-	while (pos < end) {
-		u32 val;
-		unsigned int i, skip;
-
-		ret = pci_user_write_config_word(dev, vpd->cap + PCI_VPD_ADDR,
-						 pos & ~3);
-		if (ret < 0)
-			break;
-		vpd->busy = true;
-		vpd->flag = PCI_VPD_ADDR_F;
-		ret = pci_vpd_pci22_wait(dev);
-		if (ret < 0)
-			break;
-
-		ret = pci_user_read_config_dword(dev, vpd->cap + PCI_VPD_DATA, &val);
-		if (ret < 0)
-			break;
-
-		skip = pos & 3;
-		for (i = 0;  i < sizeof(u32); i++) {
-			if (i >= skip) {
-				*buf++ = val;
-				if (++pos == end)
-					break;
-			}
-			val >>= 8;
-		}
-	}
-out:
-	mutex_unlock(&vpd->lock);
-	return ret ? ret : count;
-}
-
-static ssize_t pci_vpd_pci22_write(struct pci_dev *dev, loff_t pos, size_t count,
-				   const void *arg)
-{
-	struct pci_vpd_pci22 *vpd =
-		container_of(dev->vpd, struct pci_vpd_pci22, base);
-	const u8 *buf = arg;
-	loff_t end = pos + count;
-	int ret = 0;
-
-	if (pos < 0 || (pos & 3) || (count & 3) || end > vpd->base.len)
-		return -EINVAL;
-
-	if (mutex_lock_killable(&vpd->lock))
-		return -EINTR;
-
-	ret = pci_vpd_pci22_wait(dev);
-	if (ret < 0)
-		goto out;
-
-	while (pos < end) {
-		u32 val;
-
-		val = *buf++;
-		val |= *buf++ << 8;
-		val |= *buf++ << 16;
-		val |= *buf++ << 24;
-
-		ret = pci_user_write_config_dword(dev, vpd->cap + PCI_VPD_DATA, val);
-		if (ret < 0)
-			break;
-		ret = pci_user_write_config_word(dev, vpd->cap + PCI_VPD_ADDR,
-						 pos | PCI_VPD_ADDR_F);
-		if (ret < 0)
-			break;
-
-		vpd->busy = true;
-		vpd->flag = 0;
-		ret = pci_vpd_pci22_wait(dev);
-
-		pos += sizeof(u32);
-	}
-out:
-	mutex_unlock(&vpd->lock);
-	return ret ? ret : count;
-}
-
-static void pci_vpd_pci22_release(struct pci_dev *dev)
-{
-	kfree(container_of(dev->vpd, struct pci_vpd_pci22, base));
-}
-
-static const struct pci_vpd_ops pci_vpd_pci22_ops = {
-	.read = pci_vpd_pci22_read,
-	.write = pci_vpd_pci22_write,
-	.release = pci_vpd_pci22_release,
-};
-
-int pci_vpd_pci22_init(struct pci_dev *dev)
-{
-	struct pci_vpd_pci22 *vpd;
-	u8 cap;
-
-	cap = pci_find_capability(dev, PCI_CAP_ID_VPD);
-	if (!cap)
-		return -ENODEV;
-	vpd = kzalloc(sizeof(*vpd), GFP_ATOMIC);
-	if (!vpd)
-		return -ENOMEM;
-
-	vpd->base.len = PCI_VPD_PCI22_SIZE;
-	vpd->base.ops = &pci_vpd_pci22_ops;
-	mutex_init(&vpd->lock);
-	vpd->cap = cap;
-	vpd->busy = false;
-	dev->vpd = &vpd->base;
-	return 0;
-}
-
-/**
- * pci_vpd_truncate - Set available Vital Product Data size
- * @dev:	pci device struct
- * @size:	available memory in bytes
- *
- * Adjust size of available VPD area.
- */
-int pci_vpd_truncate(struct pci_dev *dev, size_t size)
-{
-	if (!dev->vpd)
-		return -EINVAL;
-
-	/* limited by the access method */
-	if (size > dev->vpd->len)
-		return -EINVAL;
-
-	dev->vpd->len = size;
-	dev->vpd->attr->size = size;
-
-	return 0;
-}
-EXPORT_SYMBOL(pci_vpd_truncate);
-
-/**
- * pci_block_user_cfg_access - Block userspace PCI config reads/writes
- * @dev:	pci device struct
- *
- * When user access is blocked, any reads or writes to config space will
- * sleep until access is unblocked again.  We don't allow nesting of
- * block/unblock calls.
- */
-void pci_block_user_cfg_access(struct pci_dev *dev)
-{
-	unsigned long flags;
-	int was_blocked;
-
-	spin_lock_irqsave(&pci_lock, flags);
-	was_blocked = dev->block_ucfg_access;
-	dev->block_ucfg_access = 1;
-	spin_unlock_irqrestore(&pci_lock, flags);
-
-	/* If we BUG() inside the pci_lock, we're guaranteed to hose
-	 * the machine */
-	BUG_ON(was_blocked);
-}
-EXPORT_SYMBOL_GPL(pci_block_user_cfg_access);
-
-/**
- * pci_unblock_user_cfg_access - Unblock userspace PCI config reads/writes
- * @dev:	pci device struct
- *
- * This function allows userspace PCI config accesses to resume.
- */
-void pci_unblock_user_cfg_access(struct pci_dev *dev)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&pci_lock, flags);
-
-	/* This indicates a problem in the caller, but we don't need
-	 * to kill them, unlike a double-block above. */
-	WARN_ON(!dev->block_ucfg_access);
-
-	dev->block_ucfg_access = 0;
-	wake_up_all(&pci_ucfg_wait);
-	spin_unlock_irqrestore(&pci_lock, flags);
-}
-EXPORT_SYMBOL_GPL(pci_unblock_user_cfg_access);