Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756338Ab0HaNWj (ORCPT ); Tue, 31 Aug 2010 09:22:39 -0400 Received: from moutng.kundenserver.de ([212.227.126.187]:54420 "EHLO moutng.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753542Ab0HaNWi (ORCPT ); Tue, 31 Aug 2010 09:22:38 -0400 Message-ID: <4C7D023B.9000704@steinhoff.de> Date: Tue, 31 Aug 2010 15:23:07 +0200 From: Armin Steinhoff User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.8) Gecko/20100802 Thunderbird/3.1.2 ThunderBrowse/3.3.2 MIME-Version: 1.0 To: "Hans J. Koch" CC: Linux Kernel Mailing List Subject: Re: UIO and Fedora 13 (kernel 33.6) References: <4C7B8CA6.4010504@steinhoff.de> <20100830162435.GB2566@local> <4C7CA7E4.8010005@steinhoff.de> <20100831103523.GA2598@local> In-Reply-To: <20100831103523.GA2598@local> Content-Type: multipart/mixed; boundary="------------090006020309030801030402" X-Provags-ID: V02:K0:yldEeZqLXIqK+e0+WAUF6fYqvVgiTKUrG1BPnCB9y+V 5yd15qG7F+QHTHRzNPBZfltPDhQdVmBX3urs2uEgpuL5/Ye6pE emvcSG8gmd3+pqP67q1wzIvJYaO8SJAS5tCyHZPUrT94e+RBcx DhhTCXMWCHzpK3m7cyVIPcRQdyitELflqT9FOywOJkkR9TAqBE SLOk/ewWUmPymNt/u276Q== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5756 Lines: 236 This is a multi-part message in MIME format. --------------090006020309030801030402 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Hans J. Koch wrote: > After a successfull uio_register_device() there is both a /dev/uioX > and a directory /sys/class/uio/uioX/. In the attachment is an updated version of uio_jand. The module uio_jand.ko can be inserted and removed, no messages visible by dmesg, no kernel oops, no dev/uio* and no class entries available. There are only entries of uio_jand in /sys/module, /sys/bus/platform/drivers and /sys/uio/holders ... I'm really confused =:-/ It's completely unclear how to write the initial platform_data of the platform device in the example uio_smx.c : regs = platform_get_resource(dev, IORESOURCE_MEM, 0); if (!regs) { dev_err(&dev->dev, "No memory resource specified\n"); goto out_free; Same issue in uio_platform_genirq ... Cheers --Armin --------------090006020309030801030402 Content-Type: text/x-csrc; name="uio_jand.c" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="uio_jand.c" /* * UIO CAN L2 * * (C) Armin Steinhoff * (C) 2007 Hans J. Koch * Original code (C) 2005 Benedikt Spranger * * Licensed under GPL version 2 only. * */ #include #include #include #include #include #include #include #include #define INT_QUEUE_SIZE 64 static unsigned char int_x[2], * int_q[2]; static void __iomem *isr[2]; static unsigned int irq = 11; module_param (irq, uint, 0); MODULE_PARM_DESC (irq, "IRQ (default 11)"); static unsigned long base_addr = 0xd00000; module_param (base_addr, ulong, 0); MODULE_PARM_DESC (base_addr, "Base address (default 0xD0000)"); static unsigned long base_len; module_param (base_len, ulong, 0); MODULE_PARM_DESC (base_len, "Base length (default 0x1)"); static irqreturn_t int_handler(int irq, struct uio_info *dev_info) { int irq_flag = 0; unsigned char ISRstat; ISRstat = readb(isr[0]); if(ISRstat & 0x02) { int_q[0][int_x[0]] = ISRstat; int_x[0] = (int_x[0] + 1) & 0xF ; // modulo 16 irq_flag = 1; } ISRstat = readb(isr[1]); if(ISRstat & 0x02) { int_q[1][int_x[1]] = ISRstat; int_x[1] = (int_x[1] + 1) & 0xF ; // modulo 16 irq_flag = 1; } if(irq_flag) return(IRQ_HANDLED); else return(IRQ_NONE); } static int jand_probe(struct platform_device *dev) { struct uio_info *info; dev_info(&dev->dev, "start probe %d\n", 1); info = kzalloc(sizeof(struct uio_info), GFP_KERNEL); if (!info) { return -ENOMEM; } info->mem[0].addr = base_addr; info->mem[0].size = base_len; info->mem[0].memtype = UIO_MEM_PHYS; if(request_mem_region( info->mem[0].addr, info->mem[0].size, "uio_jand")) { dev_err(&dev->dev, "request_mem_region failed %d\n", 2); goto out_release; } info->mem[0].internal_addr = ioremap(info->mem[0].addr,info->mem[0].size); if (!info->mem[0].internal_addr) { dev_err(&dev->dev, "ioremap failed %d\n", 3); goto out_release; } /* interrupt queue */ info->mem[1].addr = (unsigned long)kmalloc(64, GFP_KERNEL); if (!info->mem[1].addr) goto out_release1; int_q[0] = (unsigned char * )info->mem[1].addr; int_q[1] = (unsigned char * )info->mem[1].addr +32; memset(&int_q[0], 0x00, 16); int_x[0] = 0; memset(&int_q[1], 0x00, 16); int_x[1] = 0; info->mem[1].memtype = UIO_MEM_LOGICAL; info->mem[1].size = 64; isr[0] = info->mem[0].internal_addr + 3; /* interrupt reg channel 1 */ isr[1] = info->mem[0].internal_addr + 3 + 0x200; /* interrupt reg channel 2 */ if( request_irq(irq, int_handler, IRQF_DISABLED,"uio_jand", NULL) ) { goto out_release2; } info->name = "uio_jand"; info->version = "0.0.2"; info->irq = irq; info->irq_flags = 0; info->handler = int_handler; // different ptr types ? platform_set_drvdata(dev, info); if (uio_register_device(&dev->dev, info)) { dev_err(&dev->dev, "uio_register_device failed %d\n", 4); goto out_release2; } dev_info(&dev->dev, "uio_jand started! %d\n", 5); return 0; out_release2: kfree((void *)info->mem[1].addr); dev_err(&dev->dev, "uio_register_device failed %d \n", 6); out_release1: free_irq( irq, "uio_jand" ); iounmap(info->mem[0].internal_addr); release_mem_region( base_addr, base_len); out_release: kfree (info); dev_err(&dev->dev, "Error exit ENODEV! %d\n", 7); return -ENODEV; } static int jand_remove(struct platform_device *dev) { struct uio_info *info = platform_get_drvdata(dev); uio_unregister_device(info); iounmap(info->mem[0].internal_addr); release_mem_region( base_addr, base_len); free_irq( irq, "uio_jand" ); kfree((void *)info->mem[1].addr); kfree (info); return 0; } static struct platform_driver uio_jand_driver = { .probe = jand_probe, .remove = jand_remove, .driver = { .name = "uio_jand", .owner = THIS_MODULE, }, }; static int __init uio_jand_init(void) { return platform_driver_register(&uio_jand_driver); } static void __exit uio_jand_exit(void) { platform_driver_unregister(&uio_jand_driver); } module_init( uio_jand_init ); module_exit( uio_jand_exit ); MODULE_LICENSE("GPL"); MODULE_AUTHOR("A. Steinhoff"); MODULE_DESCRIPTION("UIO Janus-D CAN driver"); --------------090006020309030801030402-- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/