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Compute the correct number of pages spanned by the firmware. 

The old code just uses the firmware size and rounds up to full
pages. However, if the firmware isn't loaded aligned to a page
boundary (which it isn't), then one more page (and thus DMA
segment) might be necessary.
This commit is contained in:
mlelstv 2008-06-16 06:19:24 +00:00
parent 04608dd0bf
commit c2b3f9acc5
1 changed files with 3 additions and 3 deletions
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6
sys/dev/pci/if_iwi.c
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@ -1,4 +1,4 @@
/* $NetBSD: if_iwi.c,v 1.72 2008/03/21 07:47:43 dyoung Exp $ */
/* $NetBSD: if_iwi.c,v 1.73 2008/06/16 06:19:24 mlelstv Exp $ */
/*-
* Copyright (c) 2004, 2005
@ -28,7 +28,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_iwi.c,v 1.72 2008/03/21 07:47:43 dyoung Exp $");
__KERNEL_RCSID(0, "$NetBSD: if_iwi.c,v 1.73 2008/06/16 06:19:24 mlelstv Exp $");
/*-
* Intel(R) PRO/Wireless 2200BG/2225BG/2915ABG driver
@ -2015,7 +2015,7 @@ iwi_load_firmware(struct iwi_softc *sc, void *fw, int size)
int ntries, nsegs, error;
int sn;
nsegs = (size + PAGE_SIZE - 1) / PAGE_SIZE;
nsegs = atop((char*)fw+size-1) - atop((char *)fw) + 1;
/* Create a DMA map for the firmware image */
error = bus_dmamap_create(sc->sc_dmat, size, nsegs, size, 0,