[MIPS] TXx9: Reorganize PCI code

Split out PCIC dependent code and SoC dependent code from board dependent
code.  Now TX4927 PCIC code is independent from TX4927/TX4938 SoC code.
Also fix some build problems on CONFIG_PCI=n.

As a bonus, "FPCIB0 Backplane Support" is available for all TX39/TX49 boards
and PCI66 support is available for all TX49 boards.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 9 insertions, 16 deletions

diff --git a/arch/mips/pci/fixup-jmr3927.c b/arch/mips/pci/fixup-jmr3927.c
index 41dcd6a3aae5..d5edaf21e088 100644
--- a/arch/mips/pci/fixup-jmr3927.c
+++ b/arch/mips/pci/fixup-jmr3927.c
@@ -28,36 +28,31 @@
  *  675 Mass Ave, Cambridge, MA 02139, USA.
  */
 #include <linux/types.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-
+#include <asm/txx9/pci.h>
 #include <asm/txx9/jmr3927.h>
 
 int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
         unsigned char irq = pin;
 
-        /* SMSC SLC90E66 IDE uses irq 14, 15 (default) */
-        if (dev->vendor == PCI_VENDOR_ID_EFAR &&
-            dev->device == PCI_DEVICE_ID_EFAR_SLC90E66_1)
-                return irq;
         /* IRQ rotation (PICMG) */
         irq--;                  /* 0-3 */
-        if (dev->bus->parent == NULL &&
-            slot == TX3927_PCIC_IDSEL_AD_TO_SLOT(23)) {
+        if (slot == TX3927_PCIC_IDSEL_AD_TO_SLOT(23)) {
                 /* PCI CardSlot (IDSEL=A23, DevNu=12) */
                 /* PCIA => PCIC (IDSEL=A23) */
                 /* NOTE: JMR3927 JP1 must be set to OPEN */
                 irq = (irq + 2) % 4;
-        } else if (dev->bus->parent == NULL &&
-                   slot == TX3927_PCIC_IDSEL_AD_TO_SLOT(22)) {
+        } else if (slot == TX3927_PCIC_IDSEL_AD_TO_SLOT(22)) {
                 /* PCI CardSlot (IDSEL=A22, DevNu=11) */
                 /* PCIA => PCIA (IDSEL=A22) */
                 /* NOTE: JMR3927 JP1 must be set to OPEN */
                 irq = (irq + 0) % 4;
         } else {
                 /* PCI Backplane */
-                irq = (irq + 3 + slot) % 4;
+                if (txx9_pci_option & TXX9_PCI_OPT_PICMG)
+                        irq = (irq + 33 - slot) % 4;
+                else
+                        irq = (irq + 3 + slot) % 4;
         }
         irq++;                  /* 1-4 */
 
@@ -66,15 +61,13 @@ int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
                 irq = JMR3927_IRQ_IOC_PCIA;
                 break;
         case 2:
-                // wrong for backplane irq = JMR3927_IRQ_IOC_PCIB;
-                irq = JMR3927_IRQ_IOC_PCID;
+                irq = JMR3927_IRQ_IOC_PCIB;
                 break;
         case 3:
                 irq = JMR3927_IRQ_IOC_PCIC;
                 break;
         case 4:
-                // wrong for backplane irq = JMR3927_IRQ_IOC_PCID;
-                irq = JMR3927_IRQ_IOC_PCIB;
+                irq = JMR3927_IRQ_IOC_PCID;
                 break;
         }