[MIPS] New files for lemote fulong mini-PC support

Signed-off-by: Fuxin Zhang <zhangfx@lemote.com>
Signed-off-by: Songmao Tian <tiansm@lemote.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 33 insertions, 55 deletions

diff --git a/arch/mips/pci/ops-bonito64.c b/arch/mips/pci/ops-bonito64.c
index dc35270b65a2..f742c51acf0d 100644
--- a/arch/mips/pci/ops-bonito64.c
+++ b/arch/mips/pci/ops-bonito64.c
@@ -29,83 +29,60 @@
 #define PCI_ACCESS_READ  0
 #define PCI_ACCESS_WRITE 1
 
-/*
- *  PCI configuration cycle AD bus definition
- */
-/* Type 0 */
-#define PCI_CFG_TYPE0_REG_SHF           0
-#define PCI_CFG_TYPE0_FUNC_SHF          8
+#ifdef CONFIG_LEMOTE_FULONG
+#define CFG_SPACE_REG(offset) (void *)CKSEG1ADDR(BONITO_PCICFG_BASE | (offset))
+#define ID_SEL_BEGIN 11
+#else
+#define CFG_SPACE_REG(offset) (void *)CKSEG1ADDR(_pcictrl_bonito_pcicfg + (offset))
+#define ID_SEL_BEGIN 10
+#endif
+#define MAX_DEV_NUM (31 - ID_SEL_BEGIN)
 
-/* Type 1 */
-#define PCI_CFG_TYPE1_REG_SHF           0
-#define PCI_CFG_TYPE1_FUNC_SHF          8
-#define PCI_CFG_TYPE1_DEV_SHF           11
-#define PCI_CFG_TYPE1_BUS_SHF           16
 
 static int bonito64_pcibios_config_access(unsigned char access_type,
                                       struct pci_bus *bus,
                                       unsigned int devfn, int where,
                                       u32 * data)
 {
-        unsigned char busnum = bus->number;
+        u32 busnum = bus->number;
+        u32 addr, type;
         u32 dummy;
-        u64 pci_addr;
-
-        /* Algorithmics Bonito64 system controller. */
+        void *addrp;
+        int device = PCI_SLOT(devfn);
+        int function = PCI_FUNC(devfn);
+        int reg = where & ~3;
 
-        if ((busnum == 0) && (PCI_SLOT(devfn) > 21)) {
-                /* We number bus 0 devices from 0..21 */
-                return -1;
-        }
-
-        /* Clear cause register bits */
-        BONITO_PCICMD |= (BONITO_PCICMD_MABORT_CLR |
-                          BONITO_PCICMD_MTABORT_CLR);
-
-        /*
-         * Setup pattern to be used as PCI "address" for
-         * Type 0 cycle
-         */
         if (busnum == 0) {
-                /* IDSEL */
-                pci_addr = (u64) 1 << (PCI_SLOT(devfn) + 10);
-        } else {
-                /* Bus number */
-                pci_addr = busnum << PCI_CFG_TYPE1_BUS_SHF;
-
-                /* Device number */
-                pci_addr |=
-                    PCI_SLOT(devfn) << PCI_CFG_TYPE1_DEV_SHF;
-        }
-
-        /* Function (same for Type 0/1) */
-        pci_addr |= PCI_FUNC(devfn) << PCI_CFG_TYPE0_FUNC_SHF;
-
-        /* Register number (same for Type 0/1) */
-        pci_addr |= (where & ~0x3) << PCI_CFG_TYPE0_REG_SHF;
+                /* Type 0 configuration for onboard PCI bus */
+                if (device > MAX_DEV_NUM)
+                        return -1;
 
-        if (busnum == 0) {
-                /* Type 0 */
-                BONITO_PCIMAP_CFG = pci_addr >> 16;
+                addr = (1 << (device + ID_SEL_BEGIN)) | (function << 8) | reg;
+                type = 0;
         } else {
-                /* Type 1 */
-                BONITO_PCIMAP_CFG = (pci_addr >> 16) | 0x10000;
+                /* Type 1 configuration for offboard PCI bus */
+                addr = (busnum << 16) | (device << 11) | (function << 8) | reg;
+                type = 0x10000;
         }
 
-        pci_addr &= 0xffff;
+        /* Clear aborts */
+        BONITO_PCICMD |= BONITO_PCICMD_MABORT_CLR | BONITO_PCICMD_MTABORT_CLR;
+
+        BONITO_PCIMAP_CFG = (addr >> 16) | type;
 
         /* Flush Bonito register block */
         dummy = BONITO_PCIMAP_CFG;
-        iob();          /* sync */
+        mmiowb();
 
-        /* Perform access */
+        addrp = CFG_SPACE_REG(addr & 0xffff);
         if (access_type == PCI_ACCESS_WRITE) {
-                *(volatile u32 *) (_pcictrl_bonito_pcicfg + (u32)pci_addr) = *(u32 *) data;
-
+                writel(cpu_to_le32(*data), addrp);
+#ifndef CONFIG_LEMOTE_FULONG
                 /* Wait till done */
                 while (BONITO_PCIMSTAT & 0xF);
+#endif
         } else {
-                *(u32 *) data = *(volatile u32 *) (_pcictrl_bonito_pcicfg + (u32)pci_addr);
+                *data = le32_to_cpu(readl(addrp));
         }
 
         /* Detect Master/Target abort */
@@ -121,6 +98,7 @@ static int bonito64_pcibios_config_access(unsigned char access_type,
         }
 
         return 0;
+
 }