From: James Bottomley <James.Bottomley@HansenPartnership.com> To: torvalds@transmeta.com Subject: [PATCH: NEW ARCHITECTURE FOR 2.5] support for NCR voyager 343x/345x/4100/51xx architecture Date: Sun, 23 Dec 2001 13:13:42 -0600 Cc: linux-kernel@vger.kernel.org The NCR voyager architecture is essentially a precursor of the intel APIC one. The Voyager systems support from one to eight "processor" slots which take big cards with 1-4 486-686 processors. The difficulties for linux are mainly that the Interrupts are delivered through the VIC architecture of 8 8259 PIC dyads (so some processors accept interrupts and some don't); the 8259 dyads are accessible only locally to the interrupt handling processor, so global interrupt enable and disable becomes a difficult concept. Since the architecture support depends fairly intimitely on the existing i386 code, I've slotted it into the i386 architecture directory rather than trying to create a separate one. The architecture was released publicly in March 2001 for both the 2.2 and 2.4 kernel series. It has a fairly small user base. The diffs are ~151k, so I refer to them by URL rather than bunging up the mailing list. The URL is http://www.hansenpartnership.com/voyager/files/voyager-2.5.1.diff All comments welcome. James Bottomley - 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/