#define _MITE_H_
#include <linux/pci.h>
+#include <linux/log2.h>
#include "../comedidev.h"
/* #define DEBUG_MITE */
#define PCIMIO_COMPAT
#ifdef DEBUG_MITE
-#define MDPRINTK(format, args...) printk(format , ## args)
+#define MDPRINTK(format, args...) pr_debug(format , ## args)
#else
-#define MDPRINTK(format, args...)
+#define MDPRINTK(format, args...) do { } while (0)
#endif
#define MAX_MITE_DMA_CHANNELS 8
spinlock_t lock;
};
-static inline struct mite_dma_descriptor_ring *mite_alloc_ring(struct
- mite_struct
- *mite)
-{
- struct mite_dma_descriptor_ring *ring =
- kmalloc(sizeof(struct mite_dma_descriptor_ring), GFP_KERNEL);
- if (ring == NULL)
- return ring;
- ring->hw_dev = get_device(&mite->pcidev->dev);
- if (ring->hw_dev == NULL) {
- kfree(ring);
- return NULL;
- }
- ring->n_links = 0;
- ring->descriptors = NULL;
- ring->descriptors_dma_addr = 0;
- return ring;
-};
-
-static inline void mite_free_ring(struct mite_dma_descriptor_ring *ring)
-{
- if (ring) {
- if (ring->descriptors) {
- dma_free_coherent(ring->hw_dev,
- ring->n_links *
- sizeof(struct mite_dma_descriptor),
- ring->descriptors,
- ring->descriptors_dma_addr);
- }
- put_device(ring->hw_dev);
- kfree(ring);
- }
-};
-
extern struct mite_struct *mite_devices;
static inline unsigned int mite_irq(struct mite_struct *mite)
return mite->pcidev->device;
};
-void mite_init(void);
-void mite_cleanup(void);
int mite_setup(struct mite_struct *mite);
int mite_setup2(struct mite_struct *mite, unsigned use_iodwbsr_1);
void mite_unsetup(struct mite_struct *mite);
void mite_list_devices(void);
+struct mite_dma_descriptor_ring *mite_alloc_ring(struct mite_struct *mite);
+void mite_free_ring(struct mite_dma_descriptor_ring *ring);
struct mite_channel *mite_request_channel_in_range(struct mite_struct *mite,
struct
mite_dma_descriptor_ring
static inline unsigned MITE_IODWBSR_1_WSIZE_bits(unsigned size)
{
unsigned order = 0;
- while (size >>= 1)
- ++order;
+
+ BUG_ON(size == 0);
+ order = ilog2(size);
BUG_ON(order < 1);
return (order - 1) & 0x1f;
}
{
int value = 0;
- while (retry_limit) {
- retry_limit >>= 1;
- value++;
- }
+ if (retry_limit)
+ value = 1 + ilog2(retry_limit);
if (value > 0x7)
- printk("comedi: bug! retry_limit too large\n");
+ value = 0x7;
return (value & 0x7) << 21;
}