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authorSven Schnelle <svens@stackframe.org>2011-10-23 15:30:29 +0200
committerRudolf Marek <r.marek@assembler.cz>2011-10-23 23:05:44 +0200
commit3c976791b06c75e8983266b3551f133d89924376 (patch)
tree5e2cd87c53a493eb69e57d503cb1a5dd46503588
parentfc204c5a72c41e3e435a3e93b1d7a5e352018221 (diff)
downloadcoreboot-3c976791b06c75e8983266b3551f133d89924376.tar.xz
i82801gx: Don't set I/O base address to static value
Doing it this way will break all subsequent smbus calls, because the smbus code still uses res->base, which points to the old base address. Fix this by allocating a proper resource. Change-Id: I0f3d8fba5f8e2db7fe4ca991ef2c345aff436ea4 Signed-off-by: Sven Schnelle <svens@stackframe.org> Reviewed-on: http://review.coreboot.org/325 Reviewed-by: Rudolf Marek <r.marek@assembler.cz> Tested-by: build bot (Jenkins)
-rw-r--r--src/southbridge/intel/i82801gx/smbus.c26
1 files changed, 11 insertions, 15 deletions
diff --git a/src/southbridge/intel/i82801gx/smbus.c b/src/southbridge/intel/i82801gx/smbus.c
index 834f310c6c..f296b46fb3 100644
--- a/src/southbridge/intel/i82801gx/smbus.c
+++ b/src/southbridge/intel/i82801gx/smbus.c
@@ -29,19 +29,6 @@
#include "i82801gx.h"
#include "smbus.h"
-#define SMB_BASE 0x20
-static void smbus_init(struct device *dev)
-{
- u32 smb_base;
-
- smb_base = pci_read_config32(dev, SMB_BASE);
- printk(BIOS_DEBUG, "Initializing SMBus device:\n");
- printk(BIOS_DEBUG, " Old SMBUS Base Address: 0x%04x\n", smb_base);
- pci_write_config32(dev, SMB_BASE, 0x00000401);
- smb_base = pci_read_config32(dev, SMB_BASE);
- printk(BIOS_DEBUG, " New SMBUS Base Address: 0x%04x\n", smb_base);
-}
-
static int lsmbus_read_byte(device_t dev, u8 address)
{
u16 device;
@@ -74,11 +61,20 @@ static struct pci_operations smbus_pci_ops = {
.set_subsystem = smbus_set_subsystem,
};
+static void smbus_read_resources(device_t dev)
+{
+ struct resource *res = new_resource(dev, PCI_BASE_ADDRESS_4);
+ res->base = SMBUS_IO_BASE;
+ res->size = 32;
+ res->limit = res->base + res->size - 1;
+ res->flags = IORESOURCE_IO | IORESOURCE_FIXED | IORESOURCE_RESERVE |
+ IORESOURCE_STORED | IORESOURCE_ASSIGNED;
+}
+
static struct device_operations smbus_ops = {
- .read_resources = pci_dev_read_resources,
+ .read_resources = smbus_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
- .init = smbus_init,
.scan_bus = scan_static_bus,
.enable = i82801gx_enable,
.ops_smbus_bus = &lops_smbus_bus,