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authorLinus Torvalds <torvalds@linux-foundation.org>2009-12-08 08:12:43 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-08 08:12:43 -0800
commit79c9601c2e0dbbe69895d302de4d19f3a31fbd30 (patch)
tree78d4be2df851b2b4106adcfd736622a90cecf9e9 /arch/arm/mach-dove/addr-map.c
parentMerge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging (diff)
parentMerge branch 'sa1100' into devel (diff)
downloadlinux-dev-79c9601c2e0dbbe69895d302de4d19f3a31fbd30.tar.xz
linux-dev-79c9601c2e0dbbe69895d302de4d19f3a31fbd30.zip
Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (272 commits) Fix soc_common PCMCIA configuration ARM: 5827/1: SA1100: h3100/h3600: emit messages on failed gpio_request ARM: 5826/1: SA1100: h3100/h3600: always build htc-egpio driver ARM: 5825/1: SA1100: h3600: update defconfig ARM: 5824/1: SA1100: reuse h3600 PCMCIA driver on h3100 ARM: 5823/1: SA1100: h3100/h3600: add support for gpio-keys ARM: 5822/1: SA1100: h3100/h3600: clean up #includes ARM: 5821/1: SA1100: h3100/h3600: revise copyright boilerplates ARM: 5820/1: SA1100: h3100/h3600: split h3600.c ARM: 5819/1: SA1100: h3100/h3600: merge h3600.h and h3600_gpio.h into h3xxx.h ARM: 5818/1: SA1100: h3100/h3600: drop old GPIO definitions ARM: 5817/1: SA1100: h3100/h3600: configure all unused gpios as inputs ARM: 5816/1: SA1100: h3600: remove IRQ_GPIO_* definitions ARM: 5815/1: SA1100: h3100/h3600: remove now unused assign_h3600_egpio handlers ARM: 5814/1: SA1100: h3100/h3600: convert all users of assign_h3600_egpio to gpiolib ARM: 5813/1: SA1100: h3100/h3600: add htc-egpio driver ARM: 5812/1: SA1100: h3100/h3600: separate machine-specific LCD helpers ARM: 5811/2: pcmcia: convert sa1100_h3600 driver to gpiolib ARM: 5799/1: SA1100: h3600: stop setting direction for LCD pins ARM: 5798/1: SA1100: h3600: remove unused cruft from h3600.h ...
Diffstat (limited to 'arch/arm/mach-dove/addr-map.c')
-rw-r--r--arch/arm/mach-dove/addr-map.c149
1 files changed, 149 insertions, 0 deletions
diff --git a/arch/arm/mach-dove/addr-map.c b/arch/arm/mach-dove/addr-map.c
new file mode 100644
index 000000000000..00be4fc26dd7
--- /dev/null
+++ b/arch/arm/mach-dove/addr-map.c
@@ -0,0 +1,149 @@
+/*
+ * arch/arm/mach-dove/addr-map.c
+ *
+ * Address map functions for Marvell Dove 88AP510 SoC
+ *
+ * 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.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/mbus.h>
+#include <linux/io.h>
+#include <asm/mach/arch.h>
+#include <asm/setup.h>
+#include "common.h"
+
+/*
+ * Generic Address Decode Windows bit settings
+ */
+#define TARGET_DDR 0x0
+#define TARGET_BOOTROM 0x1
+#define TARGET_CESA 0x3
+#define TARGET_PCIE0 0x4
+#define TARGET_PCIE1 0x8
+#define TARGET_SCRATCHPAD 0xd
+
+#define ATTR_CESA 0x01
+#define ATTR_BOOTROM 0xfd
+#define ATTR_DEV_SPI0_ROM 0xfe
+#define ATTR_DEV_SPI1_ROM 0xfb
+#define ATTR_PCIE_IO 0xe0
+#define ATTR_PCIE_MEM 0xe8
+#define ATTR_SCRATCHPAD 0x0
+
+/*
+ * CPU Address Decode Windows registers
+ */
+#define WIN_CTRL(n) (BRIDGE_VIRT_BASE + ((n) << 4) + 0x0)
+#define WIN_BASE(n) (BRIDGE_VIRT_BASE + ((n) << 4) + 0x4)
+#define WIN_REMAP_LO(n) (BRIDGE_VIRT_BASE + ((n) << 4) + 0x8)
+#define WIN_REMAP_HI(n) (BRIDGE_VIRT_BASE + ((n) << 4) + 0xc)
+
+struct mbus_dram_target_info dove_mbus_dram_info;
+
+static inline void __iomem *ddr_map_sc(int i)
+{
+ return (void __iomem *)(DOVE_MC_VIRT_BASE + 0x100 + ((i) << 4));
+}
+
+static int cpu_win_can_remap(int win)
+{
+ if (win < 4)
+ return 1;
+
+ return 0;
+}
+
+static void __init setup_cpu_win(int win, u32 base, u32 size,
+ u8 target, u8 attr, int remap)
+{
+ u32 ctrl;
+
+ base &= 0xffff0000;
+ ctrl = ((size - 1) & 0xffff0000) | (attr << 8) | (target << 4) | 1;
+
+ writel(base, WIN_BASE(win));
+ writel(ctrl, WIN_CTRL(win));
+ if (cpu_win_can_remap(win)) {
+ if (remap < 0)
+ remap = base;
+ writel(remap & 0xffff0000, WIN_REMAP_LO(win));
+ writel(0, WIN_REMAP_HI(win));
+ }
+}
+
+void __init dove_setup_cpu_mbus(void)
+{
+ int i;
+ int cs;
+
+ /*
+ * First, disable and clear windows.
+ */
+ for (i = 0; i < 8; i++) {
+ writel(0, WIN_BASE(i));
+ writel(0, WIN_CTRL(i));
+ if (cpu_win_can_remap(i)) {
+ writel(0, WIN_REMAP_LO(i));
+ writel(0, WIN_REMAP_HI(i));
+ }
+ }
+
+ /*
+ * Setup windows for PCIe IO+MEM space.
+ */
+ setup_cpu_win(0, DOVE_PCIE0_IO_PHYS_BASE, DOVE_PCIE0_IO_SIZE,
+ TARGET_PCIE0, ATTR_PCIE_IO, DOVE_PCIE0_IO_BUS_BASE);
+ setup_cpu_win(1, DOVE_PCIE1_IO_PHYS_BASE, DOVE_PCIE1_IO_SIZE,
+ TARGET_PCIE1, ATTR_PCIE_IO, DOVE_PCIE1_IO_BUS_BASE);
+ setup_cpu_win(2, DOVE_PCIE0_MEM_PHYS_BASE, DOVE_PCIE0_MEM_SIZE,
+ TARGET_PCIE0, ATTR_PCIE_MEM, -1);
+ setup_cpu_win(3, DOVE_PCIE1_MEM_PHYS_BASE, DOVE_PCIE1_MEM_SIZE,
+ TARGET_PCIE1, ATTR_PCIE_MEM, -1);
+
+ /*
+ * Setup window for CESA engine.
+ */
+ setup_cpu_win(4, DOVE_CESA_PHYS_BASE, DOVE_CESA_SIZE,
+ TARGET_CESA, ATTR_CESA, -1);
+
+ /*
+ * Setup the Window to the BootROM for Standby and Sleep Resume
+ */
+ setup_cpu_win(5, DOVE_BOOTROM_PHYS_BASE, DOVE_BOOTROM_SIZE,
+ TARGET_BOOTROM, ATTR_BOOTROM, -1);
+
+ /*
+ * Setup the Window to the PMU Scratch Pad space
+ */
+ setup_cpu_win(6, DOVE_SCRATCHPAD_PHYS_BASE, DOVE_SCRATCHPAD_SIZE,
+ TARGET_SCRATCHPAD, ATTR_SCRATCHPAD, -1);
+
+ /*
+ * Setup MBUS dram target info.
+ */
+ dove_mbus_dram_info.mbus_dram_target_id = TARGET_DDR;
+
+ for (i = 0, cs = 0; i < 2; i++) {
+ u32 map = readl(ddr_map_sc(i));
+
+ /*
+ * Chip select enabled?
+ */
+ if (map & 1) {
+ struct mbus_dram_window *w;
+
+ w = &dove_mbus_dram_info.cs[cs++];
+ w->cs_index = i;
+ w->mbus_attr = 0; /* CS address decoding done inside */
+ /* the DDR controller, no need to */
+ /* provide attributes */
+ w->base = map & 0xff800000;
+ w->size = 0x100000 << (((map & 0x000f0000) >> 16) - 4);
+ }
+ }
+ dove_mbus_dram_info.num_cs = cs;
+}