#if !defined SUCCESS
#define SUCCESS 0
#endif
-#define FAILURE (-1)
-#define DRIVERNAMEMAX 50
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
#define MAX(a, b) (((a) > (b)) ? (a) : (b))
#define STRUCTSEQUAL(x, y) (memcmp(&x, &y, sizeof(x)) == 0)
#define HOSTADDRESS unsigned long long
#endif
-typedef long VMMIO; /**< Virtual MMIO address (returned from ioremap), which
- * is a virtual address pointer to a memory-mapped region.
- * These are declared as "long" instead of u32* to force you to
- * use readb()/writeb()/memcpy_fromio()/etc to access them.
- * (On x86 we could probably get away with treating them as
- * pointers.)
- */
-typedef long VMMIO8; /**< #VMMIO pointing to 8-bit data */
-typedef long VMMIO16;/**< #VMMIO pointing to 16-bit data */
-typedef long VMMIO32;/**< #VMMIO pointing to 32-bit data */
-
-#define LOCKSEM(sem) down_interruptible(sem)
-#define LOCKSEM_UNINTERRUPTIBLE(sem) down(sem)
-#define UNLOCKSEM(sem) up(sem)
-
-/** lock read/write semaphore for reading.
- Note that all read/write semaphores are of the "uninterruptible" variety.
- @param sem (rw_semaphore *) points to semaphore to lock
- */
-#define LOCKREADSEM(sem) down_read(sem)
-
-/** unlock read/write semaphore for reading.
- Note that all read/write semaphores are of the "uninterruptible" variety.
- @param sem (rw_semaphore *) points to semaphore to unlock
- */
-#define UNLOCKREADSEM(sem) up_read(sem)
-
-/** lock read/write semaphore for writing.
- Note that all read/write semaphores are of the "uninterruptible" variety.
- @param sem (rw_semaphore *) points to semaphore to lock
- */
-#define LOCKWRITESEM(sem) down_write(sem)
-
-/** unlock read/write semaphore for writing.
- Note that all read/write semaphores are of the "uninterruptible" variety.
- @param sem (rw_semaphore *) points to semaphore to unlock
- */
-#define UNLOCKWRITESEM(sem) up_write(sem)
-
-#ifdef ENABLE_RETURN_TRACE
-#define RETTRACE(x) \
- do { \
- if (1) { \
- INFODRV("RET 0x%lx in %s", \
- (ulong)(x), __func__); \
- } \
- } while (0)
-#else
-#define RETTRACE(x)
-#endif
-
/** Try to evaulate the provided expression, and do a RETINT(x) iff
* the expression evaluates to < 0.
* @param x the expression to try
#define INFODEVX(devno, fmt, args...) LOGINFDEVX(devno, fmt, ## args)
#define DEBUGDEV(devname, fmt, args...) DBGINFDEV(devname, fmt, ## args)
-
/* @} */
/** Verifies the consistency of your PRIVATEDEVICEDATA structure using
((fd)->sig1 == sizeof(PRIVATEFILEDATA)) && \
((fd)->sig2 == fd))
-/** Locks dd->lockDev if you havn't already locked it */
-#define LOCKDEV(dd) \
- { \
- if (!lockedDev) { \
- spin_lock(&dd->lockDev); \
- lockedDev = TRUE; \
- } \
- }
-
-/** Unlocks dd->lockDev if you previously locked it */
-#define UNLOCKDEV(dd) \
- { \
- if (lockedDev) { \
- spin_unlock(&dd->lockDev); \
- lockedDev = FALSE; \
- } \
- }
-
-/** Locks dd->lockDevISR if you havn't already locked it */
-#define LOCKDEVISR(dd) \
- { \
- if (!lockedDevISR) { \
- spin_lock_irqsave(&dd->lockDevISR, flags); \
- lockedDevISR = TRUE; \
- } \
- }
-
-/** Unlocks dd->lockDevISR if you previously locked it */
-#define UNLOCKDEVISR(dd) \
- { \
- if (lockedDevISR) { \
- spin_unlock_irqrestore(&dd->lockDevISR, flags); \
- lockedDevISR = FALSE; \
- } \
- }
-
-/** Locks LockGlobalISR if you havn't already locked it */
-#define LOCKGLOBALISR \
- { \
- if (!lockedGlobalISR) { \
- spin_lock_irqsave(&LockGlobalISR, flags); \
- lockedGlobalISR = TRUE; \
- } \
- }
-
-/** Unlocks LockGlobalISR if you previously locked it */
-#define UNLOCKGLOBALISR \
- { \
- if (lockedGlobalISR) { \
- spin_unlock_irqrestore(&LockGlobalISR, flags); \
- lockedGlobalISR = FALSE; \
- } \
- }
-
-/** Locks LockGlobal if you havn't already locked it */
-#define LOCKGLOBAL \
- { \
- if (!lockedGlobal) { \
- spin_lock(&LockGlobal); \
- lockedGlobal = TRUE; \
- } \
- }
-
-/** Unlocks LockGlobal if you previously locked it */
-#define UNLOCKGLOBAL \
- { \
- if (lockedGlobal) { \
- spin_unlock(&LockGlobal); \
- lockedGlobal = FALSE; \
- } \
- }
-
-/** Use this at the beginning of functions where you intend to
- * use #LOCKDEV/#UNLOCKDEV, #LOCKDEVISR/#UNLOCKDEVISR,
- * #LOCKGLOBAL/#UNLOCKGLOBAL, #LOCKGLOBALISR/#UNLOCKGLOBALISR.
- *
- * Note that __attribute__((unused)) is how you tell GNU C to suppress
- * any warning messages about the variable being unused.
- */
-#define LOCKPREAMBLE \
- ulong flags __attribute__((unused)) = 0; \
- BOOL lockedDev __attribute__((unused)) = FALSE; \
- BOOL lockedDevISR __attribute__((unused)) = FALSE; \
- BOOL lockedGlobal __attribute__((unused)) = FALSE; \
- BOOL lockedGlobalISR __attribute__((unused)) = FALSE
-
-
-
/** Sleep for an indicated number of seconds (for use in kernel mode).
* @param x the number of seconds to sleep.
*/
} while (0)
#ifndef max
-#define max(a, b) (((a) > (b)) ? (a):(b))
+#define max(a, b) (((a) > (b)) ? (a) : (b))
#endif
static inline struct cdev *cdev_alloc_init(struct module *owner,
const struct file_operations *fops)
{
struct cdev *cdev = NULL;
+
cdev = cdev_alloc();
if (!cdev)
return NULL;
projects / cascardo / linux.git / blobdiff