ARM: kirkwood: use fixed PCI i/o mapping

Move kirkwood PCI to fixed i/o mapping and remove io.h.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Lennert Buytenhek <kernel@wantstofly.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Cc: Jason Cooper <jason@lakedaemon.net>
Tested-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>

4 files changed, 16 insertions, 70 deletions

diff --git a/arch/arm/mach-kirkwood/common.c b/arch/arm/mach-kirkwood/common.c
index f261cd242643..55e4d7937964 100644
--- a/arch/arm/mach-kirkwood/common.c
+++ b/arch/arm/mach-kirkwood/common.c
@@ -41,16 +41,6 @@
  ****************************************************************************/
 static struct map_desc kirkwood_io_desc[] __initdata = {
         {
-                .virtual        = KIRKWOOD_PCIE_IO_VIRT_BASE,
-                .pfn            = __phys_to_pfn(KIRKWOOD_PCIE_IO_PHYS_BASE),
-                .length         = KIRKWOOD_PCIE_IO_SIZE,
-                .type           = MT_DEVICE,
-        }, {
-                .virtual        = KIRKWOOD_PCIE1_IO_VIRT_BASE,
-                .pfn            = __phys_to_pfn(KIRKWOOD_PCIE1_IO_PHYS_BASE),
-                .length         = KIRKWOOD_PCIE1_IO_SIZE,
-                .type           = MT_DEVICE,
-        }, {
                 .virtual        = KIRKWOOD_REGS_VIRT_BASE,
                 .pfn            = __phys_to_pfn(KIRKWOOD_REGS_PHYS_BASE),
                 .length         = KIRKWOOD_REGS_SIZE,
diff --git a/arch/arm/mach-kirkwood/include/mach/io.h b/arch/arm/mach-kirkwood/include/mach/io.h
deleted file mode 100644
index 5d0ab61700d2..000000000000
--- a/arch/arm/mach-kirkwood/include/mach/io.h
+++ /dev/null
@@ -1,24 +0,0 @@
-/*
- * arch/arm/mach-kirkwood/include/mach/io.h
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2.  This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
-#ifndef __ASM_ARCH_IO_H
-#define __ASM_ARCH_IO_H
-
-#include "kirkwood.h"
-
-#define IO_SPACE_LIMIT          0xffffffff
-
-static inline void __iomem *__io(unsigned long addr)
-{
-        return (void __iomem *)((addr - KIRKWOOD_PCIE_IO_BUS_BASE)
-                                        + KIRKWOOD_PCIE_IO_VIRT_BASE);
-}
-
-#define __io(a)                 __io(a)
-
-#endif
diff --git a/arch/arm/mach-kirkwood/include/mach/kirkwood.h b/arch/arm/mach-kirkwood/include/mach/kirkwood.h
index c5b68510776b..af4f0000dcef 100644
--- a/arch/arm/mach-kirkwood/include/mach/kirkwood.h
+++ b/arch/arm/mach-kirkwood/include/mach/kirkwood.h
@@ -37,14 +37,12 @@
 #define KIRKWOOD_NAND_MEM_SIZE          SZ_1K
 
 #define KIRKWOOD_PCIE1_IO_PHYS_BASE     0xf3000000
-#define KIRKWOOD_PCIE1_IO_VIRT_BASE     0xfef00000
-#define KIRKWOOD_PCIE1_IO_BUS_BASE      0x00100000
-#define KIRKWOOD_PCIE1_IO_SIZE          SZ_1M
+#define KIRKWOOD_PCIE1_IO_BUS_BASE      0x00010000
+#define KIRKWOOD_PCIE1_IO_SIZE          SZ_64K
 
 #define KIRKWOOD_PCIE_IO_PHYS_BASE      0xf2000000
-#define KIRKWOOD_PCIE_IO_VIRT_BASE      0xfee00000
 #define KIRKWOOD_PCIE_IO_BUS_BASE       0x00000000
-#define KIRKWOOD_PCIE_IO_SIZE           SZ_1M
+#define KIRKWOOD_PCIE_IO_SIZE           SZ_64K
 
 #define KIRKWOOD_REGS_PHYS_BASE         0xf1000000
 #define KIRKWOOD_REGS_VIRT_BASE         0xfed00000
diff --git a/arch/arm/mach-kirkwood/pcie.c b/arch/arm/mach-kirkwood/pcie.c
index 6e8b2efa3c35..532d8acb38f9 100644
--- a/arch/arm/mach-kirkwood/pcie.c
+++ b/arch/arm/mach-kirkwood/pcie.c
@@ -56,7 +56,7 @@ struct pcie_port {
         void __iomem            *base;
         spinlock_t              conf_lock;
         int                     irq;
-        struct resource         res[2];
+        struct resource         res;
 };
 
 static int pcie_port_map[2];
@@ -137,20 +137,12 @@ static void __init pcie0_ioresources_init(struct pcie_port *pp)
         pp->irq = IRQ_KIRKWOOD_PCIE;
 
         /*
-         * IORESOURCE_IO
-         */
-        pp->res[0].name = "PCIe 0 I/O Space";
-        pp->res[0].start = KIRKWOOD_PCIE_IO_BUS_BASE;
-        pp->res[0].end = pp->res[0].start + KIRKWOOD_PCIE_IO_SIZE - 1;
-        pp->res[0].flags = IORESOURCE_IO;
-
-        /*
          * IORESOURCE_MEM
          */
-        pp->res[1].name = "PCIe 0 MEM";
-        pp->res[1].start = KIRKWOOD_PCIE_MEM_PHYS_BASE;
-        pp->res[1].end = pp->res[1].start + KIRKWOOD_PCIE_MEM_SIZE - 1;
-        pp->res[1].flags = IORESOURCE_MEM;
+        pp->res.name = "PCIe 0 MEM";
+        pp->res.start = KIRKWOOD_PCIE_MEM_PHYS_BASE;
+        pp->res.end = pp->res.start + KIRKWOOD_PCIE_MEM_SIZE - 1;
+        pp->res.flags = IORESOURCE_MEM;
 }
 
 static void __init pcie1_ioresources_init(struct pcie_port *pp)
@@ -159,20 +151,12 @@ static void __init pcie1_ioresources_init(struct pcie_port *pp)
         pp->irq = IRQ_KIRKWOOD_PCIE1;
 
         /*
-         * IORESOURCE_IO
-         */
-        pp->res[0].name = "PCIe 1 I/O Space";
-        pp->res[0].start = KIRKWOOD_PCIE1_IO_BUS_BASE;
-        pp->res[0].end = pp->res[0].start + KIRKWOOD_PCIE1_IO_SIZE - 1;
-        pp->res[0].flags = IORESOURCE_IO;
-
-        /*
          * IORESOURCE_MEM
          */
-        pp->res[1].name = "PCIe 1 MEM";
-        pp->res[1].start = KIRKWOOD_PCIE1_MEM_PHYS_BASE;
-        pp->res[1].end = pp->res[1].start + KIRKWOOD_PCIE1_MEM_SIZE - 1;
-        pp->res[1].flags = IORESOURCE_MEM;
+        pp->res.name = "PCIe 1 MEM";
+        pp->res.start = KIRKWOOD_PCIE1_MEM_PHYS_BASE;
+        pp->res.end = pp->res.start + KIRKWOOD_PCIE1_MEM_SIZE - 1;
+        pp->res.flags = IORESOURCE_MEM;
 }
 
 static int __init kirkwood_pcie_setup(int nr, struct pci_sys_data *sys)
@@ -197,23 +181,21 @@ static int __init kirkwood_pcie_setup(int nr, struct pci_sys_data *sys)
         case 0:
                 kirkwood_enable_pcie_clk("0");
                 pcie0_ioresources_init(pp);
+                pci_ioremap_io(SZ_64K * sys->busnr, KIRKWOOD_PCIE_IO_PHYS_BASE);
                 break;
         case 1:
                 kirkwood_enable_pcie_clk("1");
                 pcie1_ioresources_init(pp);
+                pci_ioremap_io(SZ_64K * sys->busnr, KIRKWOOD_PCIE1_IO_PHYS_BASE);
                 break;
         default:
                 panic("PCIe setup: invalid controller %d", index);
         }
 
-        if (request_resource(&ioport_resource, &pp->res[0]))
-                panic("Request PCIe%d IO resource failed\n", index);
-        if (request_resource(&iomem_resource, &pp->res[1]))
+        if (request_resource(&iomem_resource, &pp->res))
                 panic("Request PCIe%d Memory resource failed\n", index);
 
-        sys->io_offset = 0;
-        pci_add_resource_offset(&sys->resources, &pp->res[0], sys->io_offset);
-        pci_add_resource_offset(&sys->resources, &pp->res[1], sys->mem_offset);
+        pci_add_resource_offset(&sys->resources, &pp->res, sys->mem_offset);
 
         /*
          * Generic PCIe unit setup.