*/
#define HAS_DMA
+static DEFINE_SPINLOCK(dma_spin_lock);
+
+#define claim_dma_lock() \
+({ unsigned long flags; \
+ spin_lock_irqsave(&dma_spin_lock, flags); \
+ flags; \
+})
+
+#define release_dma_lock(__flags) \
+ spin_unlock_irqrestore(&dma_spin_lock, __flags);
+
static struct sparc_ebus_info {
struct ebus_dma_info info;
unsigned int addr;
unsigned int count;
+ int lock;
} sparc_ebus_dmas[PARPORT_PC_MAX_PORTS];
+static __inline__ int request_dma(unsigned int dmanr, const char *device_id)
+{
+ if (dmanr >= PARPORT_PC_MAX_PORTS)
+ return -EINVAL;
+ if (xchg(&sparc_ebus_dmas[dmanr].lock, 1) != 0)
+ return -EBUSY;
+ return 0;
+}
+
+static __inline__ void free_dma(unsigned int dmanr)
+{
+ if (dmanr >= PARPORT_PC_MAX_PORTS) {
+ printk(KERN_WARNING "Trying to free DMA%d\n", dmanr);
+ return;
+ }
+ if (xchg(&sparc_ebus_dmas[dmanr].lock, 0) == 0) {
+ printk(KERN_WARNING "Trying to free free DMA%d\n", dmanr);
+ return;
+ }
+}
+
static __inline__ void enable_dma(unsigned int dmanr)
{
ebus_dma_enable(&sparc_ebus_dmas[dmanr].info, 1);
static int ebus_ecpp_p(struct linux_ebus_device *edev)
{
- if (!strcmp(edev->prom_name, "ecpp"))
+ if (!strcmp(edev->prom_node->name, "ecpp"))
return 1;
- if (!strcmp(edev->prom_name, "parallel")) {
- char compat[19];
- prom_getstring(edev->prom_node,
- "compatible",
- compat, sizeof(compat));
- compat[18] = '\0';
- if (!strcmp(compat, "ecpp"))
- return 1;
- if (!strcmp(compat, "ns87317-ecpp") &&
- !strcmp(compat + 13, "ecpp"))
+ if (!strcmp(edev->prom_node->name, "parallel")) {
+ const char *compat;
+
+ compat = of_get_property(edev->prom_node,
+ "compatible", NULL);
+ if (compat &&
+ (!strcmp(compat, "ecpp") ||
+ !strcmp(compat, "ns87317-ecpp") ||
+ !strcmp(compat + 13, "ecpp")))
return 1;
}
return 0;
struct sparc_isa_device *child;
unsigned long base;
- if (strcmp(isa_dev->prom_name, "dma"))
+ if (strcmp(isa_dev->prom_node->name, "dma"))
continue;
child = isa_dev->child;
while (child) {
- if (!strcmp(child->prom_name, "parallel"))
+ if (!strcmp(child->prom_node->name, "parallel"))
break;
child = child->next;
}