* by the Free Software Foundation.
*/
-#include <linux/spinlock.h>
#include <linux/irq.h>
#include <linux/pci.h>
#include <linux/module.h>
bool bar0_is_cached;
u32 bar0_value;
- spinlock_t lock;
-
struct pci_controller pci_controller;
struct resource io_res;
struct resource mem_res;
static int ar724x_pci_local_write(struct ar724x_pci_controller *apc,
int where, int size, u32 value)
{
- unsigned long flags;
void __iomem *base;
u32 data;
int s;
return PCIBIOS_DEVICE_NOT_FOUND;
base = apc->crp_base;
-
- spin_lock_irqsave(&apc->lock, flags);
data = __raw_readl(base + (where & ~3));
switch (size) {
data = value;
break;
default:
- spin_unlock_irqrestore(&apc->lock, flags);
return PCIBIOS_BAD_REGISTER_NUMBER;
}
__raw_writel(data, base + (where & ~3));
/* flush write */
__raw_readl(base + (where & ~3));
- spin_unlock_irqrestore(&apc->lock, flags);
return PCIBIOS_SUCCESSFUL;
}
int size, uint32_t *value)
{
struct ar724x_pci_controller *apc;
- unsigned long flags;
void __iomem *base;
u32 data;
return PCIBIOS_DEVICE_NOT_FOUND;
base = apc->devcfg_base;
-
- spin_lock_irqsave(&apc->lock, flags);
data = __raw_readl(base + (where & ~3));
switch (size) {
case 4:
break;
default:
- spin_unlock_irqrestore(&apc->lock, flags);
-
return PCIBIOS_BAD_REGISTER_NUMBER;
}
- spin_unlock_irqrestore(&apc->lock, flags);
-
if (where == PCI_BASE_ADDRESS_0 && size == 4 &&
apc->bar0_is_cached) {
/* use the cached value */
int size, uint32_t value)
{
struct ar724x_pci_controller *apc;
- unsigned long flags;
void __iomem *base;
u32 data;
int s;
}
base = apc->devcfg_base;
-
- spin_lock_irqsave(&apc->lock, flags);
data = __raw_readl(base + (where & ~3));
switch (size) {
data = value;
break;
default:
- spin_unlock_irqrestore(&apc->lock, flags);
-
return PCIBIOS_BAD_REGISTER_NUMBER;
}
__raw_writel(data, base + (where & ~3));
/* flush write */
__raw_readl(base + (where & ~3));
- spin_unlock_irqrestore(&apc->lock, flags);
return PCIBIOS_SUCCESSFUL;
}
if (apc->irq < 0)
return -EINVAL;
- spin_lock_init(&apc->lock);
-
res = platform_get_resource_byname(pdev, IORESOURCE_IO, "io_base");
if (!res)
return -EINVAL;