9 files changed, 57 insertions, 47 deletions

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index c6fc405a6c8e..291d368ffd28 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -992,8 +992,6 @@ config BOOT_ELF64
 
 menu "CPU selection"
 
-source "kernel/time/Kconfig"
-
 choice
         prompt "CPU type"
         default CPU_R4X00
@@ -1768,6 +1766,8 @@ config NR_CPUS
           performance should round up your number of processors to the next
           power of two.
 
+source "kernel/time/Kconfig"
+
 #
 # Timer Interrupt Frequency Configuration
 #
diff --git a/arch/mips/au1000/common/pci.c b/arch/mips/au1000/common/pci.c
index 6fa70a36a250..ce771487567d 100644
--- a/arch/mips/au1000/common/pci.c
+++ b/arch/mips/au1000/common/pci.c
@@ -1,8 +1,8 @@
 /*
  * BRIEF MODULE DESCRIPTION
- *      Alchemy/AMD Au1x00 pci support.
+ *      Alchemy/AMD Au1x00 PCI support.
  *
- * Copyright 2001,2002,2003 MontaVista Software Inc.
+ * Copyright 2001-2003, 2007 MontaVista Software Inc.
  * Author: MontaVista Software, Inc.
  *              ppopov@mvista.com or source@mvista.com
  *
@@ -66,6 +66,8 @@ static unsigned long virt_io_addr;
 
 static int __init au1x_pci_setup(void)
 {
+        extern void au1x_pci_cfg_init(void);
+
 #if defined(CONFIG_SOC_AU1500) || defined(CONFIG_SOC_AU1550)
         virt_io_addr = (unsigned long)ioremap(Au1500_PCI_IO_START,
                         Au1500_PCI_IO_END - Au1500_PCI_IO_START + 1);
@@ -94,6 +96,8 @@ static int __init au1x_pci_setup(void)
         set_io_port_base(virt_io_addr);
 #endif
 
+        au1x_pci_cfg_init();
+
         register_pci_controller(&au1x_controller);
         return 0;
 }
diff --git a/arch/mips/kernel/head.S b/arch/mips/kernel/head.S
index 236768731063..50be56c9e9ef 100644
--- a/arch/mips/kernel/head.S
+++ b/arch/mips/kernel/head.S
@@ -136,7 +136,8 @@ EXPORT(_stext)
          * kernel load address.  This is needed because this platform does
          * not have a ELF loader yet.
          */
-        __INIT
+FEXPORT(__kernel_entry)
+        j       kernel_entry
 #endif
 
         __INIT_REFOK
diff --git a/arch/mips/kernel/time.c b/arch/mips/kernel/time.c
index 1ecfbb7eba6c..2995be1ab3ca 100644
--- a/arch/mips/kernel/time.c
+++ b/arch/mips/kernel/time.c
@@ -147,9 +147,9 @@ static __init int cpu_has_mfc0_count_bug(void)
                         return 1;
 
                 /*
-                 * I don't have erratas for newer R4400 so be paranoid.
+                 * we assume newer revisions are ok
                  */
-                return 1;
+                return 0;
         }
 
         return 0;
diff --git a/arch/mips/pci/ops-au1000.c b/arch/mips/pci/ops-au1000.c
index 6b29904acf45..1314bd58f036 100644
--- a/arch/mips/pci/ops-au1000.c
+++ b/arch/mips/pci/ops-au1000.c
@@ -1,8 +1,8 @@
 /*
  * BRIEF MODULE DESCRIPTION
- *      Alchemy/AMD Au1x00 pci support.
+ *      Alchemy/AMD Au1x00 PCI support.
  *
- * Copyright 2001,2002,2003 MontaVista Software Inc.
+ * Copyright 2001-2003, 2007 MontaVista Software Inc.
  * Author: MontaVista Software, Inc.
  *              ppopov@mvista.com or source@mvista.com
  *
@@ -69,10 +69,27 @@ void mod_wired_entry(int entry, unsigned long entrylo0,
         write_c0_pagemask(old_pagemask);
 }
 
-struct vm_struct *pci_cfg_vm;
+static struct vm_struct *pci_cfg_vm;
 static int pci_cfg_wired_entry;
-static int first_cfg = 1;
-unsigned long last_entryLo0, last_entryLo1;
+static unsigned long last_entryLo0, last_entryLo1;
+
+/*
+ * We can't ioremap the entire pci config space because it's too large.
+ * Nor can we call ioremap dynamically because some device drivers use
+ * the PCI config routines from within interrupt handlers and that
+ * becomes a problem in get_vm_area().  We use one wired TLB to handle
+ * all config accesses for all busses.
+ */
+void __init au1x_pci_cfg_init(void)
+{
+        /* Reserve a wired entry for PCI config accesses */
+        pci_cfg_vm = get_vm_area(0x2000, VM_IOREMAP);
+        if (!pci_cfg_vm)
+                panic(KERN_ERR "PCI unable to get vm area\n");
+        pci_cfg_wired_entry = read_c0_wired();
+        add_wired_entry(0, 0, (unsigned long)pci_cfg_vm->addr, PM_4K);
+        last_entryLo0 = last_entryLo1 = 0xffffffff;
+}
 
 static int config_access(unsigned char access_type, struct pci_bus *bus,
                          unsigned int dev_fn, unsigned char where,
@@ -97,27 +114,6 @@ static int config_access(unsigned char access_type, struct pci_bus *bus,
                         Au1500_PCI_STATCMD);
         au_sync_udelay(1);
 
-        /*
-         * We can't ioremap the entire pci config space because it's
-         * too large. Nor can we call ioremap dynamically because some
-         * device drivers use the pci config routines from within
-         * interrupt handlers and that becomes a problem in get_vm_area().
-         * We use one wired tlb to handle all config accesses for all
-         * busses. To improve performance, if the current device
-         * is the same as the last device accessed, we don't touch the
-         * tlb.
-         */
-        if (first_cfg) {
-                /* reserve a wired entry for pci config accesses */
-                first_cfg = 0;
-                pci_cfg_vm = get_vm_area(0x2000, VM_IOREMAP);
-                if (!pci_cfg_vm)
-                        panic(KERN_ERR "PCI unable to get vm area\n");
-                pci_cfg_wired_entry = read_c0_wired();
-                add_wired_entry(0, 0, (unsigned long)pci_cfg_vm->addr, PM_4K);
-                last_entryLo0  = last_entryLo1 = 0xffffffff;
-        }
-
         /* Allow board vendors to implement their own off-chip idsel.
          * If it doesn't succeed, may as well bail out at this point.
          */
@@ -144,9 +140,12 @@ static int config_access(unsigned char access_type, struct pci_bus *bus,
         /* page boundary */
         cfg_base = cfg_base & PAGE_MASK;
 
+        /*
+         * To improve performance, if the current device is the same as
+         * the last device accessed, we don't touch the TLB.
+         */
         entryLo0 = (6 << 26)  | (cfg_base >> 6) | (2 << 3) | 7;
         entryLo1 = (6 << 26)  | (cfg_base >> 6) | (0x1000 >> 6) | (2 << 3) | 7;
-
         if ((entryLo0 != last_entryLo0) || (entryLo1 != last_entryLo1)) {
                 mod_wired_entry(pci_cfg_wired_entry, entryLo0, entryLo1,
                                 (unsigned long)pci_cfg_vm->addr, PM_4K);
diff --git a/arch/mips/pci/ops-mace.c b/arch/mips/pci/ops-mace.c
index fe5451449304..e95881897ec9 100644
--- a/arch/mips/pci/ops-mace.c
+++ b/arch/mips/pci/ops-mace.c
@@ -42,6 +42,10 @@ static int
 mace_pci_read_config(struct pci_bus *bus, unsigned int devfn,
                      int reg, int size, u32 *val)
 {
+        u32 control = mace->pci.control;
+
+        /* disable master aborts interrupts during config read */
+        mace->pci.control = control & ~MACEPCI_CONTROL_MAR_INT;
         mace->pci.config_addr = mkaddr(bus, devfn, reg);
         switch (size) {
         case 1:
@@ -54,6 +58,9 @@ mace_pci_read_config(struct pci_bus *bus, unsigned int devfn,
                 *val = mace->pci.config_data.l;
                 break;
         }
+        /* ack possible master abort */
+        mace->pci.error &= ~MACEPCI_ERROR_MASTER_ABORT;
+        mace->pci.control = control;
 
         DPRINTK("read%d: reg=%08x,val=%02x\n", size * 8, reg, *val);
 
diff --git a/arch/mips/pci/pci-ip32.c b/arch/mips/pci/pci-ip32.c
index 618ea7dbc474..532b561b4442 100644
--- a/arch/mips/pci/pci-ip32.c
+++ b/arch/mips/pci/pci-ip32.c
@@ -119,6 +119,7 @@ static struct pci_controller mace_pci_controller = {
         .iommu          = 0,
         .mem_offset     = MACE_PCI_MEM_OFFSET,
         .io_offset      = 0,
+        .io_map_base    = CKSEG1ADDR(MACEPCI_LOW_IO),
 };
 
 static int __init mace_init(void)
@@ -135,7 +136,8 @@ static int __init mace_init(void)
         BUG_ON(request_irq(MACE_PCI_BRIDGE_IRQ, macepci_error, 0,
                            "MACE PCI error", NULL));
 
-        iomem_resource = mace_pci_mem_resource;
+        /* extend memory resources */
+        iomem_resource.end = mace_pci_mem_resource.end;
         ioport_resource = mace_pci_io_resource;
 
         register_pci_controller(&mace_pci_controller);
diff --git a/arch/mips/sgi-ip32/ip32-irq.c b/arch/mips/sgi-ip32/ip32-irq.c
index cab7cc22ab67..b0ea0e43ba48 100644
--- a/arch/mips/sgi-ip32/ip32-irq.c
+++ b/arch/mips/sgi-ip32/ip32-irq.c
@@ -426,7 +426,6 @@ static void ip32_irq0(void)
 
         crime_int = crime->istat & crime_mask;
         irq = MACE_VID_IN1_IRQ + __ffs(crime_int);
-        crime_int = 1 << irq;
 
         if (crime_int & CRIME_MACEISA_INT_MASK) {
                 unsigned long mace_int = mace->perif.ctrl.istat;
diff --git a/arch/mips/sgi-ip32/ip32-platform.c b/arch/mips/sgi-ip32/ip32-platform.c
index 77febd68fcd4..89a71f49b692 100644
--- a/arch/mips/sgi-ip32/ip32-platform.c
+++ b/arch/mips/sgi-ip32/ip32-platform.c
@@ -13,21 +13,22 @@
 #include <asm/ip32/mace.h>
 #include <asm/ip32/ip32_ints.h>
 
-/*
- * .iobase isn't a constant (in the sense of C) so we fill it in at runtime.
- */
-#define MACE_PORT(int)                                                  \
+#define MACEISA_SERIAL1_OFFS   offsetof(struct sgi_mace, isa.serial1)
+#define MACEISA_SERIAL2_OFFS   offsetof(struct sgi_mace, isa.serial2)
+
+#define MACE_PORT(offset,_irq)                                          \
 {                                                                       \
-        .irq            = int,                                          \
+        .mapbase        = MACE_BASE + offset,                           \
+        .irq            = _irq,                                         \
         .uartclk        = 1843200,                                      \
         .iotype         = UPIO_MEM,                                     \
-        .flags          = UPF_SKIP_TEST,                                \
+        .flags          = UPF_SKIP_TEST|UPF_IOREMAP,                    \
         .regshift       = 8,                                            \
 }
 
 static struct plat_serial8250_port uart8250_data[] = {
-        MACE_PORT(MACEISA_SERIAL1_IRQ),
-        MACE_PORT(MACEISA_SERIAL2_IRQ),
+        MACE_PORT(MACEISA_SERIAL1_OFFS, MACEISA_SERIAL1_IRQ),
+        MACE_PORT(MACEISA_SERIAL2_OFFS, MACEISA_SERIAL2_IRQ),
         { },
 };
 
@@ -41,9 +42,6 @@ static struct platform_device uart8250_device = {
 
 static int __init uart8250_init(void)
 {
-        uart8250_data[0].membase = (void __iomem *) &mace->isa.serial1;
-        uart8250_data[1].membase = (void __iomem *) &mace->isa.serial2;
-
         return platform_device_register(&uart8250_device);
 }