[POWERPC] celleb: Consolidate io-workarounds code

Now, we can use generic io-workarounds mechanism and the workaround
code for spider-pci. This changes Celleb PCI code to use spider-pci
code.

Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 9 insertions, 50 deletions

diff --git a/arch/powerpc/platforms/celleb/scc_epci.c b/arch/powerpc/platforms/celleb/scc_epci.c
index a999b393f6f..b126739834a 100644
--- a/arch/powerpc/platforms/celleb/scc_epci.c
+++ b/arch/powerpc/platforms/celleb/scc_epci.c
@@ -43,10 +43,6 @@
 
 #define iob()  __asm__ __volatile__("eieio; sync":::"memory")
 
-struct epci_private {
-        dma_addr_t      dummy_page_da;
-};
-
 static inline PCI_IO_ADDR celleb_epci_get_epci_base(
                                         struct pci_controller *hose)
 {
@@ -71,42 +67,6 @@ static inline PCI_IO_ADDR celleb_epci_get_epci_cfg(
         return hose->cfg_data;
 }
 
-static void scc_epci_dummy_read(struct pci_controller *hose)
-{
-        PCI_IO_ADDR epci_base;
-        u32 val;
-
-        epci_base = celleb_epci_get_epci_base(hose);
-
-        val = in_be32(epci_base + SCC_EPCI_WATRP);
-        iosync();
-
-        return;
-}
-
-void __init epci_workaround_init(struct pci_controller *hose)
-{
-        PCI_IO_ADDR epci_base;
-        PCI_IO_ADDR reg;
-        struct epci_private *private = hose->private_data;
-
-        BUG_ON(!private);
-
-        private->dummy_page_da = dma_map_single(hose->parent,
-                celleb_dummy_page_va, PAGE_SIZE, DMA_FROM_DEVICE);
-        if (private->dummy_page_da == DMA_ERROR_CODE) {
-                printk(KERN_ERR "EPCI: dummy read disabled. "
-                       "Map dummy page failed.\n");
-                return;
-        }
-
-        celleb_pci_add_one(hose, scc_epci_dummy_read);
-        epci_base = celleb_epci_get_epci_base(hose);
-
-        reg = epci_base + SCC_EPCI_DUMYRADR;
-        out_be32(reg, private->dummy_page_da);
-}
-
 static inline void clear_and_disable_master_abort_interrupt(
                                         struct pci_controller *hose)
 {
@@ -425,8 +385,8 @@ static int __init celleb_epci_init(struct pci_controller *hose)
         return 0;
 }
 
-int __init celleb_setup_epci(struct device_node *node,
-                                struct pci_controller *hose)
+static int __init celleb_setup_epci(struct device_node *node,
+                                    struct pci_controller *hose)
 {
         struct resource r;
 
@@ -462,20 +422,12 @@ int __init celleb_setup_epci(struct device_node *node,
                  r.start, (unsigned long)hose->cfg_data,
                 (r.end - r.start + 1));
 
-        hose->private_data = kzalloc(sizeof(struct epci_private), GFP_KERNEL);
-        if (hose->private_data == NULL) {
-                printk(KERN_ERR "EPCI: no memory for private data.\n");
-                goto error;
-        }
-
         hose->ops = &celleb_epci_ops;
         celleb_epci_init(hose);
 
         return 0;
 
 error:
-        kfree(hose->private_data);
-
         if (hose->cfg_addr)
                 iounmap(hose->cfg_addr);
 
@@ -483,3 +435,10 @@ error:
                 iounmap(hose->cfg_data);
         return 1;
 }
+
+struct celleb_phb_spec celleb_epci_spec __initdata = {
+        .setup = celleb_setup_epci,
+        .ops = &spiderpci_ops,
+        .iowa_init = &spiderpci_iowa_init,
+        .iowa_data = (void *)0,
+};