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Message-Id: <1171286217.5438.25.camel@localhost.localdomain> Date: Mon, 12 Feb 2007 14:16:57 +0100 From: Andrea Galbusera <andrea.galbusera@...mware.it> To: linux-kernel@...r.kernel.org Subject: Post-boot PCI device detection Hi all, I work on a custom board and I have a PCI realated question. Please redirect me to a more suitable list if you find the following off-topic. On my board I have a powerpc and an fpga that I need to configure at boot: once this is accomplished, the fpga implements a PCI device. At moment I use a "two stages boot" in order to let the PCI subsystem correctly detect the new device. More in detail: 1. the system boots up my kernel 2. I configure the fpga through SPI with a suitable init script 3. I reboot the ppc (this does not clear fpga config, of course!) 4. Now the kernel show the PCI device and I can load its driver This works but has performance issues. Here comes the question... Is there a more suitable way to let the kernel know about the PCI device being present on the bus without rebooting the system. No hardware support is available to any sort of hotplug signaling, since the fpga will never be removed from the system after boot. How can I signal PCI that something new is present? I read Documentation/pci.txt but this does not clarify my dubt. Thank you in advance for any kind help. -- Andrea Galbusera - 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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