Date: Thu, 03 Aug 2000 16:48:12 +0900 From: YAMAMOTO Shigeru <shigeru@iij.ad.jp> To: freebsd-mobile@freebsd.org Subject: Re: Ricoh RL5C475 PCI-PCMCIA adaptor and interrupts Message-ID: <20000803164812F.shigeru@iij.ad.jp> In-Reply-To: Your message of "Wed, 2 Aug 2000 20:44:50 %2B0100" <20000802204450.A1245@linnet.org> References: <20000802204450.A1245@linnet.org>
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MELCO PC Card Adapter(PCI type) does not have an ISA interupt line. So we can not use ISA interrupt mode, only use 'PCI interrupt mode'. Please check 'IREQ/INT Enable' bit in Bridge Control Register. It must be cleared if you want to use 'PCI interrupt mode'. #Offset of Bridge Control Register is 0x3E, bit number of IREQ/INT #Enable is bit 7. When IREQ/INT Enable bit is not cleard, we need some setups to use PCI interrupt mode. 1) clear IREQ/INT Enable bit. 2) setup a PCI Interrupt Router (it may be in PCI to ISA Bridge). for setting up a PCI Interrupt Router, we need to use PCIBIOS call, or read Microsoft $PIR structure in a BIOS and change a register in a PCI Interrupt Router. Thanks, ------- YAMAMOTO Shigeru Internet Initiative Japan Inc. <shigeru@iij.ad.jp> Network Engineering Div. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-mobile" in the body of the message
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