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Date: Sun, 28 Jul 2013 15:27:24 +0530 From: sundeep subbaraya <sundeep.lkml@...il.com> To: hjk@...sjkoch.de, gregkh@...uxfoundation.org, arnd@...db.de, linux-kernel@...r.kernel.org Subject: [RFC] Request for suggestions Hi All, AXI bus Monitor(AM) has set of counters which are used to collect metrics related to AXI transactions happening between Masters and Slaves in an AXI system. Example metrics which can be calculated using AM are as below: Read Latency Write Latency Idle Read/Write Cycle counts Number of Transactions Number of Bytes transferred Number of Read/Write Last signals issued. etc., AM raises interrupts during counter overflows and there is Sample Interval down counter which raises interrupt and takes snapshot of all counters and stores in set of registers. Use case for this IP will be as follows: User confiures his required metrics to be collected by Counters. User sets Sample Interval down counter depending on the metrics monitoring sampling rate. Start counters. Collect metrics data when AM issues Sample Interval down Counter interrupt. What would be the appropriate framework/interface of Linux Driver for AM? I have been thinking of interfaces- UIO Char sysfs The main problem I see is signalling interrupts to Userspace. Please suggest me the best interface. Thanks, Sundeep -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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