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authorLinus Torvalds <torvalds@linux-foundation.org>2011-03-17 19:08:06 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-03-17 19:08:06 -0700
commit411f5c7a502769ccc0377c5ba36cb0b283847ba8 (patch)
tree2c3a29671e3f923de48c55f94194849264a7bf53 /arch/arm/plat-s5p/include/plat/sysmmu.h
parent6d7ed21d17e640b120b902a314143e5ef4917a70 (diff)
parent9ced9f03d12d7539e86b0bff5bc750153c976c34 (diff)
Merge branch 'devel-stable' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel-stable' of master.kernel.org:/home/rmk/linux-2.6-arm: (289 commits) davinci: DM644x EVM: register MUSB device earlier davinci: add spi devices on tnetv107x evm davinci: add ssp config for tnetv107x evm board davinci: add tnetv107x ssp platform device spi: add ti-ssp spi master driver mfd: add driver for sequencer serial port ARM: EXYNOS4: Implement Clock gating for System MMU ARM: EXYNOS4: Enhancement of System MMU driver ARM: EXYNOS4: Add support for gpio interrupts ARM: S5P: Add function to register gpio interrupt bank data ARM: S5P: Cleanup S5P gpio interrupt code ARM: EXYNOS4: Add missing GPYx banks ARM: S3C64XX: Fix section mismatch from cpufreq init ARM: EXYNOS4: Add keypad device to the SMDKV310 ARM: EXYNOS4: Update clocks for keypad ARM: EXYNOS4: Update keypad base address ARM: EXYNOS4: Add keypad device helpers ARM: EXYNOS4: Add support for SATA on ARMLEX4210 plat-nomadik: make GPIO interrupts work with cpuidle ApSleep mach-u300: define a dummy filter function for coh901318 ... Fix up various conflicts in - arch/arm/mach-exynos4/cpufreq.c - arch/arm/mach-mxs/gpio.c - drivers/net/Kconfig - drivers/tty/serial/Kconfig - drivers/tty/serial/Makefile - drivers/usb/gadget/fsl_mxc_udc.c - drivers/video/Kconfig
Diffstat (limited to 'arch/arm/plat-s5p/include/plat/sysmmu.h')
-rw-r--r--arch/arm/plat-s5p/include/plat/sysmmu.h95
1 files changed, 95 insertions, 0 deletions
diff --git a/arch/arm/plat-s5p/include/plat/sysmmu.h b/arch/arm/plat-s5p/include/plat/sysmmu.h
new file mode 100644
index 000000000000..bf5283c2a19d
--- /dev/null
+++ b/arch/arm/plat-s5p/include/plat/sysmmu.h
@@ -0,0 +1,95 @@
+/* linux/arch/arm/plat-s5p/include/plat/sysmmu.h
+ *
+ * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * Samsung System MMU driver for S5P platform
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#ifndef __ASM__PLAT_SYSMMU_H
+#define __ASM__PLAT_SYSMMU_H __FILE__
+
+enum S5P_SYSMMU_INTERRUPT_TYPE {
+ SYSMMU_PAGEFAULT,
+ SYSMMU_AR_MULTIHIT,
+ SYSMMU_AW_MULTIHIT,
+ SYSMMU_BUSERROR,
+ SYSMMU_AR_SECURITY,
+ SYSMMU_AR_ACCESS,
+ SYSMMU_AW_SECURITY,
+ SYSMMU_AW_PROTECTION, /* 7 */
+ SYSMMU_FAULTS_NUM
+};
+
+#ifdef CONFIG_S5P_SYSTEM_MMU
+
+#include <mach/sysmmu.h>
+
+/**
+ * s5p_sysmmu_enable() - enable system mmu of ip
+ * @ips: The ip connected system mmu.
+ * #pgd: Base physical address of the 1st level page table
+ *
+ * This function enable system mmu to transfer address
+ * from virtual address to physical address
+ */
+void s5p_sysmmu_enable(sysmmu_ips ips, unsigned long pgd);
+
+/**
+ * s5p_sysmmu_disable() - disable sysmmu mmu of ip
+ * @ips: The ip connected system mmu.
+ *
+ * This function disable system mmu to transfer address
+ * from virtual address to physical address
+ */
+void s5p_sysmmu_disable(sysmmu_ips ips);
+
+/**
+ * s5p_sysmmu_set_tablebase_pgd() - set page table base address to refer page table
+ * @ips: The ip connected system mmu.
+ * @pgd: The page table base address.
+ *
+ * This function set page table base address
+ * When system mmu transfer address from virtaul address to physical address,
+ * system mmu refer address information from page table
+ */
+void s5p_sysmmu_set_tablebase_pgd(sysmmu_ips ips, unsigned long pgd);
+
+/**
+ * s5p_sysmmu_tlb_invalidate() - flush all TLB entry in system mmu
+ * @ips: The ip connected system mmu.
+ *
+ * This function flush all TLB entry in system mmu
+ */
+void s5p_sysmmu_tlb_invalidate(sysmmu_ips ips);
+
+/** s5p_sysmmu_set_fault_handler() - Fault handler for System MMUs
+ * @itype: type of fault.
+ * @pgtable_base: the physical address of page table base. This is 0 if @ips is
+ * SYSMMU_BUSERROR.
+ * @fault_addr: the device (virtual) address that the System MMU tried to
+ * translated. This is 0 if @ips is SYSMMU_BUSERROR.
+ * Called when interrupt occurred by the System MMUs
+ * The device drivers of peripheral devices that has a System MMU can implement
+ * a fault handler to resolve address translation fault by System MMU.
+ * The meanings of return value and parameters are described below.
+
+ * return value: non-zero if the fault is correctly resolved.
+ * zero if the fault is not handled.
+ */
+void s5p_sysmmu_set_fault_handler(sysmmu_ips ips,
+ int (*handler)(enum S5P_SYSMMU_INTERRUPT_TYPE itype,
+ unsigned long pgtable_base,
+ unsigned long fault_addr));
+#else
+#define s5p_sysmmu_enable(ips, pgd) do { } while (0)
+#define s5p_sysmmu_disable(ips) do { } while (0)
+#define s5p_sysmmu_set_tablebase_pgd(ips, pgd) do { } while (0)
+#define s5p_sysmmu_tlb_invalidate(ips) do { } while (0)
+#define s5p_sysmmu_set_fault_handler(ips, handler) do { } while (0)
+#endif
+#endif /* __ASM_PLAT_SYSMMU_H */