diff options
Diffstat (limited to 'sys/dev/ic')
| -rw-r--r-- | sys/dev/ic/i82365.c | 55 | ||||
| -rw-r--r-- | sys/dev/ic/i82365var.h | 8 |
2 files changed, 56 insertions, 7 deletions
diff --git a/sys/dev/ic/i82365.c b/sys/dev/ic/i82365.c index fc5a3458d06..c06a9e4e428 100644 --- a/sys/dev/ic/i82365.c +++ b/sys/dev/ic/i82365.c @@ -1,4 +1,4 @@ -/* $OpenBSD: i82365.c,v 1.2 1998/12/15 07:12:57 fgsch Exp $ */ +/* $OpenBSD: i82365.c,v 1.3 1999/01/03 10:05:51 deraadt Exp $ */ /* $NetBSD: i82365.c,v 1.10 1998/06/09 07:36:55 thorpej Exp $ */ /* @@ -767,8 +767,8 @@ pcic_chip_mem_map(pch, kind, card_addr, size, pcmhp, offsetp, windowp) busaddr = pcmhp->addr; /* - * compute the address offset to the pcmcia address space for the - * pcic. this is intentionally signed. The masks and shifts below + * Compute the address offset to the pcmcia address space for the + * pcic. This is intentionally signed. The masks and shifts below * will cause TRT to happen in the pcic registers. Deal with making * sure the address is aligned, and return the alignment offset. */ @@ -827,8 +827,9 @@ pcic_chip_io_alloc(pch, start, size, align, pcihp) struct pcic_handle *h = (struct pcic_handle *) pch; bus_space_tag_t iot; bus_space_handle_t ioh; - bus_addr_t ioaddr; + bus_addr_t ioaddr = 0, beg, fin; int flags = 0; + struct pcic_ranges *range; /* * Allocate some arbitrary I/O space. @@ -841,7 +842,49 @@ pcic_chip_io_alloc(pch, start, size, align, pcihp) if (bus_space_map(iot, start, size, 0, &ioh)) return (1); DPRINTF(("pcic_chip_io_alloc map port %lx+%lx\n", - (u_long) ioaddr, (u_long) size)); + (u_long)ioaddr, (u_long)size)); + } else if (h->sc->ranges) { + flags |= PCMCIA_IO_ALLOCATED; + + /* + * In this case, we know the "size" and "align" that + * we want. So we need to start walking down + * h->sc->ranges, searching for a similar space that + * is (1) large enough for the size and alignment + * (2) then we need to try to allocate + * (3) if it fails to allocate, we try next range. + * + * We must also check that the start/size of each + * allocation we are about to do is within the bounds + * of "h->sc->iobase" and "h->sc->iosize". + * (Some pcmcia controllers handle a 12 bits of addressing, + * but we want to use the same range structure) + */ + for (range = h->sc->ranges; range->start; range++) { + /* Potentially trim the range because of bounds. */ + beg = max(range->start, h->sc->iobase); + fin = min(range->start + range->len, + h->sc->iobase + h->sc->iosize); + + /* Short-circuit easy case. */ + if (fin - beg < size) + continue; + + /* + * This call magically fulfills our alignment + * requirements. + */ + DPRINTF(("pcic_chip_io_alloc beg-fin %lx-%lx\n", + (u_long)beg, (u_long)fin)); + if (bus_space_alloc(iot, beg, fin, size, align, 0, 0, + &ioaddr, &ioh) == 0) + break; + } + if (range->start == 0) + return (1); + DPRINTF(("pcic_chip_io_alloc alloc port %lx+%lx\n", + (u_long)ioaddr, (u_long)size)); + } else { flags |= PCMCIA_IO_ALLOCATED; if (bus_space_alloc(iot, h->sc->iobase, @@ -849,7 +892,7 @@ pcic_chip_io_alloc(pch, start, size, align, pcihp) &ioaddr, &ioh)) return (1); DPRINTF(("pcic_chip_io_alloc alloc port %lx+%lx\n", - (u_long) ioaddr, (u_long) size)); + (u_long)ioaddr, (u_long)size)); } pcihp->iot = iot; diff --git a/sys/dev/ic/i82365var.h b/sys/dev/ic/i82365var.h index 7c96d40f90a..7c62228d87e 100644 --- a/sys/dev/ic/i82365var.h +++ b/sys/dev/ic/i82365var.h @@ -1,4 +1,4 @@ -/* $OpenBSD: i82365var.h,v 1.1 1998/09/11 07:53:58 fgsch Exp $ */ +/* $OpenBSD: i82365var.h,v 1.2 1999/01/03 10:05:52 deraadt Exp $ */ /* $NetBSD: i82365var.h,v 1.4 1998/05/23 18:32:29 matt Exp $ */ /* @@ -77,6 +77,11 @@ struct pcic_handle { #define PCIC_NSLOTS 4 +struct pcic_ranges { + u_short start; + u_short len; +}; + struct pcic_softc { struct device dev; @@ -105,6 +110,7 @@ struct pcic_softc { */ bus_addr_t iobase; bus_addr_t iosize; + struct pcic_ranges *ranges; int irq; void *ih; |