goldfish: add support for 64bit to the virtual bus

This patchs adds a new register to pass the upper 32bits for the
device name address when running in 64bit mode.

Signed-off-by: Octavian Purdila <octavian.purdila@intel.com>
Signed-off-by: Jun Tian <jun.j.tian@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/platform/goldfish/pdev_bus.c b/drivers/platform/goldfish/pdev_bus.c
index 4eb2bb34790d..eb254400c44a 100644
--- a/drivers/platform/goldfish/pdev_bus.c
+++ b/drivers/platform/goldfish/pdev_bus.c
@@ -36,6 +36,7 @@
 #define PDEV_BUS_IO_SIZE        (0x14)
 #define PDEV_BUS_IRQ            (0x18)
 #define PDEV_BUS_IRQ_COUNT      (0x1c)
+#define PDEV_BUS_GET_NAME_HIGH  (0x20)
 
 struct pdev_bus_dev {
         struct list_head list;
@@ -129,7 +130,10 @@ static int goldfish_new_pdev(void)
         dev->pdev.dev.dma_mask = (void *)(dev->pdev.name + name_len + 1);
         *dev->pdev.dev.dma_mask = ~0;
 
-        writel((unsigned long)name, pdev_bus_base + PDEV_BUS_GET_NAME);
+#ifdef CONFIG_64BIT
+        writel((u32)((u64)name>>32), pdev_bus_base + PDEV_BUS_GET_NAME_HIGH);
+#endif
+        writel((u32)(u64)name, pdev_bus_base + PDEV_BUS_GET_NAME);
         name[name_len] = '\0';
         dev->pdev.id = readl(pdev_bus_base + PDEV_BUS_ID);
         dev->pdev.resource[0].start = base;