diff options
Diffstat (limited to 'src/include/kernel')
| -rw-r--r-- | src/include/kernel/devicesegment.H | 47 | ||||
| -rw-r--r-- | src/include/kernel/misc.H | 63 | ||||
| -rw-r--r-- | src/include/kernel/pagemgr.H | 22 | ||||
| -rw-r--r-- | src/include/kernel/syscalls.H | 4 |
4 files changed, 77 insertions, 59 deletions
diff --git a/src/include/kernel/devicesegment.H b/src/include/kernel/devicesegment.H index c300eedde..2b87c9161 100644 --- a/src/include/kernel/devicesegment.H +++ b/src/include/kernel/devicesegment.H @@ -1,25 +1,26 @@ -// IBM_PROLOG_BEGIN_TAG -// This is an automatically generated prolog. -// -// $Source: src/include/kernel/devicesegment.H $ -// -// IBM CONFIDENTIAL -// -// COPYRIGHT International Business Machines Corp. 2011 -// -// p1 -// -// Object Code Only (OCO) source materials -// Licensed Internal Code Source Materials -// IBM HostBoot Licensed Internal Code -// -// The source code for this program is not published or other- -// wise divested of its trade secrets, irrespective of what has -// been deposited with the U.S. Copyright Office. -// -// Origin: 30 -// -// IBM_PROLOG_END +/* IBM_PROLOG_BEGIN_TAG + * This is an automatically generated prolog. + * + * $Source: src/include/kernel/devicesegment.H $ + * + * IBM CONFIDENTIAL + * + * COPYRIGHT International Business Machines Corp. 2011-2012 + * + * p1 + * + * Object Code Only (OCO) source materials + * Licensed Internal Code Source Materials + * IBM HostBoot Licensed Internal Code + * + * The source code for this program is not published or other- + * wise divested of its trade secrets, irrespective of what has + * been deposited with the U.S. Copyright Office. + * + * Origin: 30 + * + * IBM_PROLOG_END_TAG + */ #ifndef __KERNEL_DEVICESEGMENT_H #define __KERNEL_DEVICESEGMENT_H @@ -41,7 +42,7 @@ class DeviceSegment : public Segment * * Associates itself with the SegmentManager. */ - explicit DeviceSegment(size_t segId) : Segment(segId * TERABYTE) + explicit DeviceSegment(size_t segId) : Segment(segId * VMM_SEGMENT_SIZE) { init(segId); }; /** diff --git a/src/include/kernel/misc.H b/src/include/kernel/misc.H index f04439748..ebec9cc48 100644 --- a/src/include/kernel/misc.H +++ b/src/include/kernel/misc.H @@ -1,25 +1,26 @@ -// IBM_PROLOG_BEGIN_TAG -// This is an automatically generated prolog. -// -// $Source: src/include/kernel/misc.H $ -// -// IBM CONFIDENTIAL -// -// COPYRIGHT International Business Machines Corp. 2011 -// -// p1 -// -// Object Code Only (OCO) source materials -// Licensed Internal Code Source Materials -// IBM HostBoot Licensed Internal Code -// -// The source code for this program is not published or other- -// wise divested of its trade secrets, irrespective of what has -// been deposited with the U.S. Copyright Office. -// -// Origin: 30 -// -// IBM_PROLOG_END +/* IBM_PROLOG_BEGIN_TAG + * This is an automatically generated prolog. + * + * $Source: src/include/kernel/misc.H $ + * + * IBM CONFIDENTIAL + * + * COPYRIGHT International Business Machines Corp. 2011-2012 + * + * p1 + * + * Object Code Only (OCO) source materials + * Licensed Internal Code Source Materials + * IBM HostBoot Licensed Internal Code + * + * The source code for this program is not published or other- + * wise divested of its trade secrets, irrespective of what has + * been deposited with the U.S. Copyright Office. + * + * Origin: 30 + * + * IBM_PROLOG_END_TAG + */ /** @file misc.H * @brief Misc. Kernel functions and utilities. */ @@ -28,6 +29,7 @@ #define __KERNEL_MISC_H #include <stdint.h> +#include <usr/vmmconst.h> namespace KernelMisc { @@ -40,5 +42,22 @@ namespace KernelMisc extern uint64_t g_payload_base; /** @brief Address from base of payload entry-point. */ extern uint64_t g_payload_entry; + + /** @fn in_kernel_mode + * @brief Determine if the code is currently in kernel mode or not. + * + * @return [true | false] + */ + inline bool in_kernel_mode() + { + uint64_t stack = 0; + asm volatile("mr %0, 1" : "=r"(stack)); + if((stack >= VMM_VADDR_STACK_SEGMENT) && + (stack < (VMM_VADDR_STACK_SEGMENT + VMM_SEGMENT_SIZE))) + { + return false; + } + return true; + } }; #endif diff --git a/src/include/kernel/pagemgr.H b/src/include/kernel/pagemgr.H index 6676a469c..93cd82bb5 100644 --- a/src/include/kernel/pagemgr.H +++ b/src/include/kernel/pagemgr.H @@ -54,7 +54,7 @@ class PageManagerCore /** * Default Constructor */ - PageManagerCore() + PageManagerCore() : iv_available(0) {} /** @@ -76,7 +76,7 @@ class PageManagerCore * @return a pointer to the requested allocation | NULL * if the request could not be satisfied. */ - page_t * allocatePage( size_t i_pageCount ); + page_t * allocatePage( size_t i_pageCount ); /** * Return page allocations to the page manager @@ -136,9 +136,10 @@ class PageManager /** * Allocate pages * @param[in] n, Requested allocation in pages + * @param[in] userspace - Request to allocate came from userspace * @return pointer to requested memory */ - static void* allocatePage(size_t n = 1); + static void* allocatePage(size_t n = 1, bool userspace = false); /** * Return pages to the pagemanager @@ -170,6 +171,9 @@ class PageManager { MEMLEN = VmmManager::MBOX_DMA_ADDR, RESERVED_PAGES = 4, + + LOWMEM_NORM_LIMIT = 16, + LOWMEM_CRIT_LIMIT = 5, }; static size_t cv_coalesce_count; //!< running coalesced counter @@ -182,15 +186,9 @@ class PageManager private: - void* _allocatePage(size_t); //!< see allocatePage() - void _freePage(void*, size_t); //!< see freePage() - void _coalesce( void ); //!< see coalesce() - - /** - * Query if in kernel mode - * @return [true | false] - */ - bool queryKernelMode() const; + void* _allocatePage(size_t,bool); //!< see allocatePage() + void _freePage(void*, size_t); //!< see freePage() + void _coalesce( void ); //!< see coalesce() /** see queryAvail() */ ALWAYS_INLINE uint64_t _queryAvail() const diff --git a/src/include/kernel/syscalls.H b/src/include/kernel/syscalls.H index 20cfd4e65..a46fde703 100644 --- a/src/include/kernel/syscalls.H +++ b/src/include/kernel/syscalls.H @@ -97,8 +97,8 @@ namespace Systemcalls /** mm_set_permission() */ MM_SET_PERMISSION, - /** mm_flush_pages() */ - MM_FLUSH_PAGES, + /** mm_alloc_pages() */ + MM_ALLOC_PAGES, SYSCALL_MAX }; |
