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Diffstat (limited to 'arch/powerpc/platforms/chrp/pci.c')
-rw-r--r--arch/powerpc/platforms/chrp/pci.c39
1 files changed, 34 insertions, 5 deletions
diff --git a/arch/powerpc/platforms/chrp/pci.c b/arch/powerpc/platforms/chrp/pci.c
index 28d1647b204e..e43465d34d29 100644
--- a/arch/powerpc/platforms/chrp/pci.c
+++ b/arch/powerpc/platforms/chrp/pci.c
@@ -13,7 +13,6 @@
#include <asm/irq.h>
#include <asm/hydra.h>
#include <asm/prom.h>
-#include <asm/gg2.h>
#include <asm/machdep.h>
#include <asm/sections.h>
#include <asm/pci-bridge.h>
@@ -21,6 +20,7 @@
#include <asm/rtas.h>
#include "chrp.h"
+#include "gg2.h"
/* LongTrail */
void __iomem *gg2_pci_config_base;
@@ -86,8 +86,8 @@ int gg2_write_config(struct pci_bus *bus, unsigned int devfn, int off,
static struct pci_ops gg2_pci_ops =
{
- gg2_read_config,
- gg2_write_config
+ .read = gg2_read_config,
+ .write = gg2_write_config,
};
/*
@@ -124,8 +124,8 @@ int rtas_write_config(struct pci_bus *bus, unsigned int devfn, int offset,
static struct pci_ops rtas_pci_ops =
{
- rtas_read_config,
- rtas_write_config
+ .read = rtas_read_config,
+ .write = rtas_write_config,
};
volatile struct Hydra __iomem *Hydra = NULL;
@@ -338,3 +338,32 @@ void chrp_pci_fixup_winbond_ata(struct pci_dev *sl82c105)
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_WINBOND, PCI_DEVICE_ID_WINBOND_82C105,
chrp_pci_fixup_winbond_ata);
+
+/* Pegasos2 firmware version 20040810 configures the built-in IDE controller
+ * in legacy mode, but sets the PCI registers to PCI native mode.
+ * The chip can only operate in legacy mode, so force the PCI class into legacy
+ * mode as well. The same fixup must be done to the class-code property in
+ * the IDE node /pci@80000000/ide@C,1
+ */
+static void chrp_pci_fixup_vt8231_ata(struct pci_dev *viaide)
+{
+ u8 progif;
+ struct pci_dev *viaisa;
+
+ if (!machine_is(chrp) || _chrp_type != _CHRP_Pegasos)
+ return;
+ if (viaide->irq != 14)
+ return;
+
+ viaisa = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, NULL);
+ if (!viaisa)
+ return;
+ printk("Fixing VIA IDE, force legacy mode on '%s'\n", viaide->dev.bus_id);
+
+ pci_read_config_byte(viaide, PCI_CLASS_PROG, &progif);
+ pci_write_config_byte(viaide, PCI_CLASS_PROG, progif & ~0x5);
+ viaide->class &= ~0x5;
+
+ pci_dev_put(viaisa);
+}
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_1, chrp_pci_fixup_vt8231_ata);