* [9/9] Support for old IBM PReP boxes
@ 2004-07-29 21:35 Leigh Brown
0 siblings, 0 replies; only message in thread
From: Leigh Brown @ 2004-07-29 21:35 UTC (permalink / raw)
To: paulus; +Cc: trini, linuxppc-dev, barbieri
This makes the /proc/interrupts display the correct edge/level
indicator for each interrupt. This is purely cosmetic, but does
reduce confusion.
diff -urNX /home/leigh/.diffex linux-2.6.8-rc2-bk8.prev/arch/ppc/platforms/prep_pci.c linux-2.6.8-rc2-bk8/arch/ppc/platforms/prep_pci.c
--- linux-2.6.8-rc2-bk8.prev/arch/ppc/platforms/prep_pci.c 2004-07-29 20:44:33.000000000 +0100
+++ linux-2.6.8-rc2-bk8/arch/ppc/platforms/prep_pci.c 2004-07-29 20:56:09.000000000 +0100
@@ -1029,11 +1029,18 @@
}
} else if ( _prep_type == _PREP_IBM ) {
unsigned char irq_edge_mask_lo, irq_edge_mask_hi;
+ unsigned short irq_edge_mask;
+ int i;
setup_ibm_pci(&irq_edge_mask_lo, &irq_edge_mask_hi);
outb(inb(0x04d0)|irq_edge_mask_lo, 0x4d0); /* primary 8259 */
outb(inb(0x04d1)|irq_edge_mask_hi, 0x4d1); /* cascaded 8259 */
+
+ irq_edge_mask = (irq_edge_mask_hi << 8) | irq_edge_mask_lo;
+ for (i = 0; i < 16; ++i, irq_edge_mask >>= 1)
+ if (irq_edge_mask & 1)
+ irq_desc[i].status |= IRQ_LEVEL;
} else {
printk("No known machine pci routing!\n");
return;
** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/
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