From 3edcfb2937054fb546ecf3a8883675751db16c6f Mon Sep 17 00:00:00 2001 From: Krzysztof Hałasa Date: Thu, 8 May 2008 23:18:31 +0200 Subject: IXP4xx: check for queue being empty in qmgr_release_queue(). Signed-off-by: Krzysztof Hałasa --- arch/arm/mach-ixp4xx/ixp4xx_qmgr.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'arch/arm/mach-ixp4xx/ixp4xx_qmgr.c') diff --git a/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c b/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c index c6cb069a5a83..988bc1bbf4f2 100644 --- a/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c +++ b/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c @@ -199,6 +199,10 @@ void qmgr_release_queue(unsigned int queue) spin_unlock_irq(&qmgr_lock); module_put(THIS_MODULE); + + while ((addr = qmgr_get_entry(queue))) + printk(KERN_ERR "qmgr: released queue %d not empty: 0x%08X\n", + queue, addr); #if DEBUG printk(KERN_DEBUG "qmgr: released queue %i\n", queue); #endif -- cgit v1.2.3 From ae2754a975694a3865788e303b741d0f616bc43a Mon Sep 17 00:00:00 2001 From: Krzysztof Hałasa Date: Fri, 9 May 2008 02:14:09 +0200 Subject: IXP4xx: clear IRQ stat in qmgr_disable_irq(). Signed-off-by: Krzysztof Hałasa --- arch/arm/mach-ixp4xx/ixp4xx_qmgr.c | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/arm/mach-ixp4xx/ixp4xx_qmgr.c') diff --git a/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c b/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c index 988bc1bbf4f2..444c2ae21db4 100644 --- a/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c +++ b/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c @@ -70,6 +70,7 @@ 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); } -- cgit v1.2.3 From e6da96ace859dad966fe85cc9552b89f48bbc930 Mon Sep 17 00:00:00 2001 From: Krzysztof Hałasa Date: Mon, 22 Dec 2008 00:26:38 +0100 Subject: IXP4xx: move common debugging from network drivers to QMGR module. Signed-off-by: Krzysztof Hałasa --- arch/arm/mach-ixp4xx/include/mach/qmgr.h | 35 ++++++++++++++++++-- arch/arm/mach-ixp4xx/ixp4xx_qmgr.c | 41 +++++++++++++++++------- drivers/net/arm/ixp4xx_eth.c | 55 +++++++------------------------- drivers/net/wan/ixp4xx_hss.c | 54 +++++++------------------------ 4 files changed, 85 insertions(+), 100 deletions(-) (limited to 'arch/arm/mach-ixp4xx/ixp4xx_qmgr.c') diff --git a/arch/arm/mach-ixp4xx/include/mach/qmgr.h b/arch/arm/mach-ixp4xx/include/mach/qmgr.h index 1e52b95cede5..0cbe6ceb67c5 100644 --- a/arch/arm/mach-ixp4xx/include/mach/qmgr.h +++ b/arch/arm/mach-ixp4xx/include/mach/qmgr.h @@ -12,6 +12,8 @@ #include #include +#define DEBUG_QMGR 0 + #define HALF_QUEUES 32 #define QUEUES 64 /* only 32 lower queues currently supported */ #define MAX_QUEUE_LENGTH 4 /* in dwords */ @@ -61,22 +63,51 @@ void qmgr_enable_irq(unsigned int queue); void qmgr_disable_irq(unsigned int queue); /* request_ and release_queue() must be called from non-IRQ context */ + +#if DEBUG_QMGR +extern char qmgr_queue_descs[QUEUES][32]; + 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); +#define qmgr_request_queue(queue, len, nearly_empty_watermark, \ + nearly_full_watermark, desc_format, name) \ + __qmgr_request_queue(queue, len, nearly_empty_watermark, \ + nearly_full_watermark) +#endif + void qmgr_release_queue(unsigned int queue); static inline void qmgr_put_entry(unsigned int queue, u32 val) { extern struct qmgr_regs __iomem *qmgr_regs; +#if DEBUG_QMGR + BUG_ON(!qmgr_queue_descs[queue]); /* not yet requested */ + + printk(KERN_DEBUG "Queue %s(%i) put %X\n", + qmgr_queue_descs[queue], queue, val); +#endif __raw_writel(val, &qmgr_regs->acc[queue][0]); } static inline u32 qmgr_get_entry(unsigned int queue) { + u32 val; extern struct qmgr_regs __iomem *qmgr_regs; - return __raw_readl(&qmgr_regs->acc[queue][0]); + val = __raw_readl(&qmgr_regs->acc[queue][0]); +#if DEBUG_QMGR + BUG_ON(!qmgr_queue_descs[queue]); /* not yet requested */ + + printk(KERN_DEBUG "Queue %s(%i) get %X\n", + qmgr_queue_descs[queue], queue, val); +#endif + return val; } static inline int qmgr_get_stat1(unsigned int queue) diff --git a/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c b/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c index 444c2ae21db4..bfddc73d0a20 100644 --- a/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c +++ b/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c @@ -14,8 +14,6 @@ #include #include -#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) { @@ -82,9 +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; @@ -152,12 +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: @@ -190,6 +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]; @@ -202,11 +217,8 @@ void qmgr_release_queue(unsigned int queue) module_put(THIS_MODULE); while ((addr = qmgr_get_entry(queue))) - printk(KERN_ERR "qmgr: released queue %d not empty: 0x%08X\n", + printk(KERN_ERR "qmgr: released queue %i not empty: 0x%08X\n", queue, addr); -#if DEBUG - printk(KERN_DEBUG "qmgr: released queue %i\n", queue); -#endif } static int qmgr_init(void) @@ -277,5 +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); diff --git a/drivers/net/arm/ixp4xx_eth.c b/drivers/net/arm/ixp4xx_eth.c index 3f72eb66e7f1..64adf6cc1221 100644 --- a/drivers/net/arm/ixp4xx_eth.c +++ b/drivers/net/arm/ixp4xx_eth.c @@ -35,7 +35,6 @@ #include #include -#define DEBUG_QUEUES 0 #define DEBUG_DESC 0 #define DEBUG_RX 0 #define DEBUG_TX 0 @@ -423,47 +422,13 @@ static inline void debug_desc(u32 phys, struct desc *desc) #endif } -static inline void debug_queue(unsigned int queue, int is_get, u32 phys) -{ -#if DEBUG_QUEUES - static struct { - int queue; - char *name; - } names[] = { - { TX_QUEUE(0x10), "TX#0 " }, - { TX_QUEUE(0x20), "TX#1 " }, - { TX_QUEUE(0x00), "TX#2 " }, - { RXFREE_QUEUE(0x10), "RX-free#0 " }, - { RXFREE_QUEUE(0x20), "RX-free#1 " }, - { RXFREE_QUEUE(0x00), "RX-free#2 " }, - { TXDONE_QUEUE, "TX-done " }, - }; - int i; - - for (i = 0; i < ARRAY_SIZE(names); i++) - if (names[i].queue == queue) - break; - - printk(KERN_DEBUG "Queue %i %s%s %X\n", queue, - i < ARRAY_SIZE(names) ? names[i].name : "", - is_get ? "->" : "<-", phys); -#endif -} - -static inline u32 queue_get_entry(unsigned int queue) -{ - u32 phys = qmgr_get_entry(queue); - debug_queue(queue, 1, phys); - return phys; -} - static inline int queue_get_desc(unsigned int queue, struct port *port, int is_tx) { u32 phys, tab_phys, n_desc; struct desc *tab; - if (!(phys = queue_get_entry(queue))) + if (!(phys = qmgr_get_entry(queue))) return -1; phys &= ~0x1F; /* mask out non-address bits */ @@ -479,7 +444,6 @@ static inline int queue_get_desc(unsigned int queue, struct port *port, static inline void queue_put_desc(unsigned int queue, u32 phys, struct desc *desc) { - debug_queue(queue, 0, phys); debug_desc(phys, desc); BUG_ON(phys & 0x1F); qmgr_put_entry(queue, phys); @@ -628,7 +592,7 @@ static void eth_txdone_irq(void *unused) #if DEBUG_TX printk(KERN_DEBUG DRV_NAME ": eth_txdone_irq\n"); #endif - while ((phys = queue_get_entry(TXDONE_QUEUE)) != 0) { + while ((phys = qmgr_get_entry(TXDONE_QUEUE)) != 0) { u32 npe_id, n_desc; struct port *port; struct desc *desc; @@ -840,25 +804,30 @@ static int request_queues(struct port *port) { int err; - err = qmgr_request_queue(RXFREE_QUEUE(port->id), RX_DESCS, 0, 0); + err = qmgr_request_queue(RXFREE_QUEUE(port->id), RX_DESCS, 0, 0, + "%s:RX-free", port->netdev->name); if (err) return err; - err = qmgr_request_queue(port->plat->rxq, RX_DESCS, 0, 0); + err = qmgr_request_queue(port->plat->rxq, RX_DESCS, 0, 0, + "%s:RX", port->netdev->name); if (err) goto rel_rxfree; - err = qmgr_request_queue(TX_QUEUE(port->id), TX_DESCS, 0, 0); + err = qmgr_request_queue(TX_QUEUE(port->id), TX_DESCS, 0, 0, + "%s:TX", port->netdev->name); if (err) goto rel_rx; - err = qmgr_request_queue(port->plat->txreadyq, TX_DESCS, 0, 0); + err = qmgr_request_queue(port->plat->txreadyq, TX_DESCS, 0, 0, + "%s:TX-ready", port->netdev->name); if (err) goto rel_tx; /* TX-done queue handles skbs sent out by the NPEs */ if (!ports_open) { - err = qmgr_request_queue(TXDONE_QUEUE, TXDONE_QUEUE_LEN, 0, 0); + err = qmgr_request_queue(TXDONE_QUEUE, TXDONE_QUEUE_LEN, 0, 0, + "%s:TX-done", DRV_NAME); if (err) goto rel_txready; } diff --git a/drivers/net/wan/ixp4xx_hss.c b/drivers/net/wan/ixp4xx_hss.c index fa3ce81f4cfc..0c6802507a79 100644 --- a/drivers/net/wan/ixp4xx_hss.c +++ b/drivers/net/wan/ixp4xx_hss.c @@ -21,7 +21,6 @@ #include #include -#define DEBUG_QUEUES 0 #define DEBUG_DESC 0 #define DEBUG_RX 0 #define DEBUG_TX 0 @@ -555,48 +554,13 @@ static inline void debug_desc(u32 phys, struct desc *desc) #endif } -static inline void debug_queue(unsigned int queue, int is_get, u32 phys) -{ -#if DEBUG_QUEUES - static struct { - int queue; - char *name; - } names[] = { - { HSS0_PKT_TX0_QUEUE, "TX#0 " }, - { HSS0_PKT_TXDONE_QUEUE, "TX-done#0 " }, - { HSS0_PKT_RX_QUEUE, "RX#0 " }, - { HSS0_PKT_RXFREE0_QUEUE, "RX-free#0 " }, - { HSS1_PKT_TX0_QUEUE, "TX#1 " }, - { HSS1_PKT_TXDONE_QUEUE, "TX-done#1 " }, - { HSS1_PKT_RX_QUEUE, "RX#1 " }, - { HSS1_PKT_RXFREE0_QUEUE, "RX-free#1 " }, - }; - int i; - - for (i = 0; i < ARRAY_SIZE(names); i++) - if (names[i].queue == queue) - break; - - printk(KERN_DEBUG "Queue %i %s%s %X\n", queue, - i < ARRAY_SIZE(names) ? names[i].name : "", - is_get ? "->" : "<-", phys); -#endif -} - -static inline u32 queue_get_entry(unsigned int queue) -{ - u32 phys = qmgr_get_entry(queue); - debug_queue(queue, 1, phys); - return phys; -} - static inline int queue_get_desc(unsigned int queue, struct port *port, int is_tx) { u32 phys, tab_phys, n_desc; struct desc *tab; - if (!(phys = queue_get_entry(queue))) + if (!(phys = qmgr_get_entry(queue))) return -1; BUG_ON(phys & 0x1F); @@ -612,7 +576,6 @@ static inline int queue_get_desc(unsigned int queue, struct port *port, static inline void queue_put_desc(unsigned int queue, u32 phys, struct desc *desc) { - debug_queue(queue, 0, phys); debug_desc(phys, desc); BUG_ON(phys & 0x1F); qmgr_put_entry(queue, phys); @@ -930,23 +893,28 @@ static int request_hdlc_queues(struct port *port) { int err; - err = qmgr_request_queue(queue_ids[port->id].rxfree, RX_DESCS, 0, 0); + err = qmgr_request_queue(queue_ids[port->id].rxfree, RX_DESCS, 0, 0, + "%s:RX-free", port->netdev->name); if (err) return err; - err = qmgr_request_queue(queue_ids[port->id].rx, RX_DESCS, 0, 0); + err = qmgr_request_queue(queue_ids[port->id].rx, RX_DESCS, 0, 0, + "%s:RX", port->netdev->name); if (err) goto rel_rxfree; - err = qmgr_request_queue(queue_ids[port->id].tx, TX_DESCS, 0, 0); + err = qmgr_request_queue(queue_ids[port->id].tx, TX_DESCS, 0, 0, + "%s:TX", port->netdev->name); if (err) goto rel_rx; - err = qmgr_request_queue(port->plat->txreadyq, TX_DESCS, 0, 0); + err = qmgr_request_queue(port->plat->txreadyq, TX_DESCS, 0, 0, + "%s:TX-ready", port->netdev->name); if (err) goto rel_tx; - err = qmgr_request_queue(queue_ids[port->id].txdone, TX_DESCS, 0, 0); + err = qmgr_request_queue(queue_ids[port->id].txdone, TX_DESCS, 0, 0, + "%s:TX-done", port->netdev->name); if (err) goto rel_txready; return 0; -- cgit v1.2.3