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-rw-r--r--arch/arm/mach-ixp4xx/include/mach/qmgr.h69
1 files changed, 58 insertions, 11 deletions
diff --git a/arch/arm/mach-ixp4xx/include/mach/qmgr.h b/arch/arm/mach-ixp4xx/include/mach/qmgr.h
index 0cbe6ce..9e7cad2 100644
--- a/arch/arm/mach-ixp4xx/include/mach/qmgr.h
+++ b/arch/arm/mach-ixp4xx/include/mach/qmgr.h
@@ -15,7 +15,7 @@
#define DEBUG_QMGR 0
#define HALF_QUEUES 32
-#define QUEUES 64 /* only 32 lower queues currently supported */
+#define QUEUES 64
#define MAX_QUEUE_LENGTH 4 /* in dwords */
#define QUEUE_STAT1_EMPTY 1 /* queue status bits */
@@ -110,48 +110,95 @@ static inline u32 qmgr_get_entry(unsigned int queue)
return val;
}
-static inline int qmgr_get_stat1(unsigned int queue)
+static inline int __qmgr_get_stat1(unsigned int queue)
{
extern struct qmgr_regs __iomem *qmgr_regs;
return (__raw_readl(&qmgr_regs->stat1[queue >> 3])
>> ((queue & 7) << 2)) & 0xF;
}
-static inline int qmgr_get_stat2(unsigned int queue)
+static inline int __qmgr_get_stat2(unsigned int queue)
{
extern struct qmgr_regs __iomem *qmgr_regs;
+ BUG_ON(queue >= HALF_QUEUES);
return (__raw_readl(&qmgr_regs->stat2[queue >> 4])
>> ((queue & 0xF) << 1)) & 0x3;
}
+/**
+ * qmgr_stat_empty() - checks if a hardware queue is empty
+ * @queue: queue number
+ *
+ * Returns non-zero value if the queue is empty.
+ */
static inline int qmgr_stat_empty(unsigned int queue)
{
- return !!(qmgr_get_stat1(queue) & QUEUE_STAT1_EMPTY);
+ BUG_ON(queue >= HALF_QUEUES);
+ return __qmgr_get_stat1(queue) & QUEUE_STAT1_EMPTY;
}
-static inline int qmgr_stat_nearly_empty(unsigned int queue)
+/**
+ * qmgr_stat_below_low_watermark() - checks if a queue is below low watermark
+ * @queue: queue number
+ *
+ * Returns non-zero value if the queue is below low watermark.
+ */
+static inline int qmgr_stat_below_low_watermark(unsigned int queue)
{
- return !!(qmgr_get_stat1(queue) & QUEUE_STAT1_NEARLY_EMPTY);
+ extern struct qmgr_regs __iomem *qmgr_regs;
+ if (queue >= HALF_QUEUES)
+ return (__raw_readl(&qmgr_regs->statne_h) >>
+ (queue - HALF_QUEUES)) & 0x01;
+ return __qmgr_get_stat1(queue) & QUEUE_STAT1_NEARLY_EMPTY;
}
-static inline int qmgr_stat_nearly_full(unsigned int queue)
+/**
+ * qmgr_stat_above_high_watermark() - checks if a queue is above high watermark
+ * @queue: queue number
+ *
+ * Returns non-zero value if the queue is above high watermark
+ */
+static inline int qmgr_stat_above_high_watermark(unsigned int queue)
{
- return !!(qmgr_get_stat1(queue) & QUEUE_STAT1_NEARLY_FULL);
+ BUG_ON(queue >= HALF_QUEUES);
+ return __qmgr_get_stat1(queue) & QUEUE_STAT1_NEARLY_FULL;
}
+/**
+ * qmgr_stat_full() - checks if a hardware queue is full
+ * @queue: queue number
+ *
+ * Returns non-zero value if the queue is full.
+ */
static inline int qmgr_stat_full(unsigned int queue)
{
- return !!(qmgr_get_stat1(queue) & QUEUE_STAT1_FULL);
+ extern struct qmgr_regs __iomem *qmgr_regs;
+ if (queue >= HALF_QUEUES)
+ return (__raw_readl(&qmgr_regs->statf_h) >>
+ (queue - HALF_QUEUES)) & 0x01;
+ return __qmgr_get_stat1(queue) & QUEUE_STAT1_FULL;
}
+/**
+ * qmgr_stat_underflow() - checks if a hardware queue experienced underflow
+ * @queue: queue number
+ *
+ * Returns non-zero value if the queue experienced underflow.
+ */
static inline int qmgr_stat_underflow(unsigned int queue)
{
- return !!(qmgr_get_stat2(queue) & QUEUE_STAT2_UNDERFLOW);
+ return __qmgr_get_stat2(queue) & QUEUE_STAT2_UNDERFLOW;
}
+/**
+ * qmgr_stat_overflow() - checks if a hardware queue experienced overflow
+ * @queue: queue number
+ *
+ * Returns non-zero value if the queue experienced overflow.
+ */
static inline int qmgr_stat_overflow(unsigned int queue)
{
- return !!(qmgr_get_stat2(queue) & QUEUE_STAT2_OVERFLOW);
+ return __qmgr_get_stat2(queue) & QUEUE_STAT2_OVERFLOW;
}
#endif
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