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path: root/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c
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Diffstat (limited to 'arch/arm/mach-ixp4xx/ixp4xx_qmgr.c')
-rw-r--r--arch/arm/mach-ixp4xx/ixp4xx_qmgr.c44
1 files changed, 33 insertions, 11 deletions
diff --git a/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c b/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c
index c6cb069a5a83..bfddc73d0a20 100644
--- a/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c
+++ b/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c
@@ -14,8 +14,6 @@
#include <linux/module.h>
#include <mach/qmgr.h>
-#define DEBUG 0
-
struct qmgr_regs __iomem *qmgr_regs;
static struct resource *mem_res;
static spinlock_t qmgr_lock;
@@ -23,6 +21,10 @@ static u32 used_sram_bitmap[4]; /* 128 16-dword pages */
static void (*irq_handlers[HALF_QUEUES])(void *pdev);
static void *irq_pdevs[HALF_QUEUES];
+#if DEBUG_QMGR
+char qmgr_queue_descs[QUEUES][32];
+#endif
+
void qmgr_set_irq(unsigned int queue, int src,
void (*handler)(void *pdev), void *pdev)
{
@@ -70,6 +72,7 @@ void qmgr_disable_irq(unsigned int queue)
spin_lock_irqsave(&qmgr_lock, flags);
__raw_writel(__raw_readl(&qmgr_regs->irqen[0]) & ~(1 << queue),
&qmgr_regs->irqen[0]);
+ __raw_writel(1 << queue, &qmgr_regs->irqstat[0]); /* clear */
spin_unlock_irqrestore(&qmgr_lock, flags);
}
@@ -81,9 +84,16 @@ static inline void shift_mask(u32 *mask)
mask[0] <<= 1;
}
+#if DEBUG_QMGR
int qmgr_request_queue(unsigned int queue, unsigned int len /* dwords */,
unsigned int nearly_empty_watermark,
- unsigned int nearly_full_watermark)
+ unsigned int nearly_full_watermark,
+ const char *desc_format, const char* name)
+#else
+int __qmgr_request_queue(unsigned int queue, unsigned int len /* dwords */,
+ unsigned int nearly_empty_watermark,
+ unsigned int nearly_full_watermark)
+#endif
{
u32 cfg, addr = 0, mask[4]; /* in 16-dwords */
int err;
@@ -151,12 +161,13 @@ int qmgr_request_queue(unsigned int queue, unsigned int len /* dwords */,
used_sram_bitmap[2] |= mask[2];
used_sram_bitmap[3] |= mask[3];
__raw_writel(cfg | (addr << 14), &qmgr_regs->sram[queue]);
- spin_unlock_irq(&qmgr_lock);
-
-#if DEBUG
- printk(KERN_DEBUG "qmgr: requested queue %i, addr = 0x%02X\n",
- queue, addr);
+#if DEBUG_QMGR
+ snprintf(qmgr_queue_descs[queue], sizeof(qmgr_queue_descs[0]),
+ desc_format, name);
+ printk(KERN_DEBUG "qmgr: requested queue %s(%i) addr = 0x%02X\n",
+ qmgr_queue_descs[queue], queue, addr);
#endif
+ spin_unlock_irq(&qmgr_lock);
return 0;
err:
@@ -189,6 +200,11 @@ void qmgr_release_queue(unsigned int queue)
while (addr--)
shift_mask(mask);
+#if DEBUG_QMGR
+ printk(KERN_DEBUG "qmgr: releasing queue %s(%i)\n",
+ qmgr_queue_descs[queue], queue);
+ qmgr_queue_descs[queue][0] = '\x0';
+#endif
__raw_writel(0, &qmgr_regs->sram[queue]);
used_sram_bitmap[0] &= ~mask[0];
@@ -199,9 +215,10 @@ void qmgr_release_queue(unsigned int queue)
spin_unlock_irq(&qmgr_lock);
module_put(THIS_MODULE);
-#if DEBUG
- printk(KERN_DEBUG "qmgr: released queue %i\n", queue);
-#endif
+
+ while ((addr = qmgr_get_entry(queue)))
+ printk(KERN_ERR "qmgr: released queue %i not empty: 0x%08X\n",
+ queue, addr);
}
static int qmgr_init(void)
@@ -272,5 +289,10 @@ EXPORT_SYMBOL(qmgr_regs);
EXPORT_SYMBOL(qmgr_set_irq);
EXPORT_SYMBOL(qmgr_enable_irq);
EXPORT_SYMBOL(qmgr_disable_irq);
+#if DEBUG_QMGR
+EXPORT_SYMBOL(qmgr_queue_descs);
EXPORT_SYMBOL(qmgr_request_queue);
+#else
+EXPORT_SYMBOL(__qmgr_request_queue);
+#endif
EXPORT_SYMBOL(qmgr_release_queue);