Messages in this thread Patch in this message | | | Date | Sun, 20 Jun 2004 19:25:55 +0200 | From | Geert Uytterhoeven <> | Subject | [PATCH 452] M68k bus error handling |
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M68k: Allow to catch a bus error via the exception mechanism (from Roman Zippel)
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
--- linux-2.6.7/arch/m68k/kernel/traps.c 2004-05-03 11:01:24.000000000 +0200 +++ linux-m68k-2.6.7/arch/m68k/kernel/traps.c 2004-05-23 10:55:54.000000000 +0200 @@ -329,7 +329,8 @@ * fault during mem_read/mem_write in ifpsp060/os.S */ send_fault_sig(&fp->ptregs); - } else { + } else if (!(fslw & (MMU060_RE|MMU060_WE)) || + send_fault_sig(&fp->ptregs) > 0) { printk("pc=%#lx, fa=%#lx\n", fp->ptregs.pc, fp->un.fmt4.effaddr); printk( "68060 access error, fslw=%lx\n", fslw ); trap_c( fp ); @@ -517,7 +518,7 @@ if (fp->un.fmt7.wb2a == fp->un.fmt7.faddr) fp->un.fmt7.wb2s &= ~WBV_040; } - } else { + } else if (send_fault_sig(&fp->ptregs) > 0) { printk("68040 access error, ssw=%x\n", ssw); trap_c(fp); } @@ -732,7 +733,7 @@ return; } else if (!(mmusr & MMU_I)) { /* probably a 020 cas fault */ - if (!(ssw & RM)) + if (!(ssw & RM) && send_fault_sig(&fp->ptregs) > 0) printk("unexpected bus error (%#x,%#x)\n", ssw, mmusr); } else if (mmusr & (MMU_B|MMU_L|MMU_S)) { printk("invalid %s access at %#lx from pc %#lx\n", Gr{oetje,eeting}s, Geert
-- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds - 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/
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