diff options
Diffstat (limited to 'arch/arm/mach-ixp4xx/ixp4xx_qmgr.c')
| -rw-r--r-- | arch/arm/mach-ixp4xx/ixp4xx_qmgr.c | 44 |
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); |