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authorSven Schnelle <svens@stackframe.org>2012-02-01 11:47:29 +0100
committerSven Schnelle <svens@stackframe.org>2012-02-02 16:01:47 +0100
commitb06bd8d9542513d87c62e494d3ca8012264b2878 (patch)
tree77a6e240f305c1ac1bd4e145feb90aee821a9f6a
parent317ca0d75190cdda385cca327991b72f14e9667f (diff)
i3100: configure pci irqs
without it, you can't boot from PCI devices like scsi controllers which require an interrupt set. So preconfigure all pci devices. Change-Id: I2cd781227701e8363d83bd90e0e36994359fc194 Signed-off-by: Sven Schnelle <svens@stackframe.org> Reviewed-on: http://review.coreboot.org/603 Tested-by: build bot (Jenkins)
-rw-r--r--src/southbridge/intel/i3100/lpc.c46
1 files changed, 42 insertions, 4 deletions
diff --git a/src/southbridge/intel/i3100/lpc.c b/src/southbridge/intel/i3100/lpc.c
index 1544ecd44f..2dcdb04825 100644
--- a/src/southbridge/intel/i3100/lpc.c
+++ b/src/southbridge/intel/i3100/lpc.c
@@ -28,6 +28,7 @@
#include <device/pci_ops.h>
#include <pc80/mc146818rtc.h>
#include <pc80/isa-dma.h>
+#include <pc80/i8259.h>
#include <arch/io.h>
#include <arch/ioapic.h>
#include "i3100.h"
@@ -196,17 +197,51 @@ static void set_i3100_gpio_inv(
static void i3100_pirq_init(device_t dev)
{
+ device_t irq_dev;
config_t *config;
/* Get the chip configuration */
config = dev->chip_info;
- if(config->pirq_a_d) {
+ if(config->pirq_a_d)
pci_write_config32(dev, 0x60, config->pirq_a_d);
- }
- if(config->pirq_e_h) {
+
+ if(config->pirq_e_h)
pci_write_config32(dev, 0x68, config->pirq_e_h);
- }
+
+ for(irq_dev = all_devices; irq_dev; irq_dev = irq_dev->next) {
+ u8 int_pin=0, int_line=0;
+
+ if (!irq_dev->enabled || irq_dev->path.type != DEVICE_PATH_PCI)
+ continue;
+
+ int_pin = pci_read_config8(irq_dev, PCI_INTERRUPT_PIN);
+ switch (int_pin) {
+ case 1: /* INTA# */
+ int_line = config->pirq_a_d & 0xff;
+ break;
+
+ case 2: /* INTB# */
+ int_line = (config->pirq_a_d >> 8) & 0xff;
+ break;
+
+ case 3: /* INTC# */
+ int_line = (config->pirq_a_d >> 16) & 0xff;
+ break;
+
+ case 4: /* INTD# */
+ int_line = (config->pirq_a_d >> 24) & 0xff;
+ break;
+ }
+
+ if (!int_line)
+ continue;
+
+ printk(BIOS_DEBUG, "%s: irq pin %d, irq line %d\n", dev_path(irq_dev), int_pin, int_line);
+ pci_write_config8(irq_dev, PCI_INTERRUPT_LINE, int_line);
+ }
+
+
}
static void i3100_power_options(device_t dev) {
@@ -343,6 +378,9 @@ static void lpc_init(struct device *dev)
/* Initialize isa dma */
isa_dma_init();
+
+ setup_i8259();
+ i8259_configure_irq_trigger(9, 1);
}
static void i3100_lpc_read_resources(device_t dev)