FreeCalypso > hg > fc-tourmaline
view src/gpf/osl/os_isr.c @ 214:adfdbcd360fd
backlight evolution: API between Condat driver and MFW
With this change, the API between the Condat backlight driver
and its user in MFW now carries more abstract backlight state codes
(fully off, fully on, in call, charging boot mode) instead of
0-255 levels. This change is needed in order to more properly support
different hardware targets with different capabilities and approaches
in terms of backlight handling.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Fri, 23 Apr 2021 23:52:02 +0000 |
parents | 4e78acac3d88 |
children |
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/* * This C module is a reconstruction based on the disassembly of * os_isr.obj in frame_na7_db_fl.lib from the Leonardo package. */ /* set of included headers from COFF symtab: */ #include <string.h> #include "nucleus.h" #include "typedefs.h" #include "os.h" #include "gdi.h" #include "os_types.h" #include "os_glob.h" typedef unsigned char u_char; extern T_OS_OSISR_TABLE_ENTRY OSISRTable[]; extern OS_HANDLE os_int_pool_handle; GLOBAL LONG os_isr_init(void) { USHORT i; for (i = 1; i <= MaxOSISRs; i++) OSISRTable[i].name[0] = 0; return(OS_OK); } GLOBAL LONG os_SetInterruptState(OS_INT_STATE new_state, OS_INT_STATE *old_state) { INT state; if (new_state) state = NU_ENABLE_INTERRUPTS; else state = NU_DISABLE_INTERRUPTS; state = NU_Control_Interrupts(state); if (state & 0xFF) *old_state = 0; else *old_state = 1; return(OS_OK); } GLOBAL LONG os_EnableInterrupts(OS_INT_STATE *old_state) { INT state; state = NU_Control_Interrupts(NU_ENABLE_INTERRUPTS); if (state & 0xFF) *old_state = 0; else *old_state = 1; return(OS_OK); } GLOBAL LONG os_DisableInterrupts(OS_INT_STATE *old_state) { INT state; state = NU_Control_Interrupts(NU_DISABLE_INTERRUPTS); if (state & 0xFF) *old_state = 0; else *old_state = 1; return(OS_OK); } GLOBAL LONG os_DeleteOSISR(OS_HANDLE hisr_handle) { OS_INT_STATE old_state, state; if (hisr_handle <= 0 || hisr_handle > MaxOSISRs) return(OS_ERROR); if (OSISRTable[hisr_handle].hisr_cb.tc_activation_count) return(OS_ERROR); os_DisableInterrupts(&old_state); if (os_DeallocateMemory(os_MyHandle(), OSISRTable[hisr_handle].stack) == OS_ERROR) { error: os_SetInterruptState(old_state, &state); return(OS_ERROR); } if (NU_Delete_HISR(&OSISRTable[hisr_handle].hisr_cb) != NU_SUCCESS) goto error; OSISRTable[hisr_handle].name[0] = 0; os_SetInterruptState(old_state, &state); return(OS_OK); } GLOBAL LONG os_CreateOSISR(char *name, void (*OSISR_entry)(void), int stacksize, int priority, int flags, OS_HANDLE *hisr_handle) { OS_HANDLE handle; T_VOID_STRUCT *hisr_stack; OS_INT_STATE old_state, state; if (priority < 0 || priority > 2) return(OS_ERROR); priority = 2 - priority; os_DisableInterrupts(&old_state); for (handle = 1; handle <= MaxOSISRs; handle++) if (!strncmp(OSISRTable[handle].name, name, RESOURCE_NAMELEN - 1)) { error: os_SetInterruptState(old_state, &state); return(OS_ERROR); } for (handle = 1; handle <= MaxOSISRs; handle++) if (!OSISRTable[handle].name[0]) break; if (handle > MaxOSISRs) goto error; if (os_AllocateMemory(os_MyHandle(), &hisr_stack, stacksize, 0xFFFFFFFF, os_int_pool_handle) == OS_ERROR) goto error; memset((u_char *)hisr_stack, INITIAL_STACK_VALUE, stacksize); *hisr_stack = GUARD_PATTERN; if (NU_Create_HISR(&OSISRTable[handle].hisr_cb, name, OSISR_entry, priority, (VOID *)hisr_stack, stacksize) != NU_SUCCESS) goto error; strncpy(OSISRTable[handle].name, name, RESOURCE_NAMELEN); OSISRTable[handle].name[RESOURCE_NAMELEN-1] = 0; OSISRTable[handle].stack = hisr_stack; *hisr_handle = handle; os_SetInterruptState(old_state, &state); return(OS_OK); } GLOBAL LONG os_ActivateOSISR(OS_HANDLE hisr_handle) { if (hisr_handle <= 0 || hisr_handle > MaxOSISRs) return(OS_ERROR); if (NU_Activate_HISR(&OSISRTable[hisr_handle].hisr_cb) == NU_SUCCESS) return(OS_OK); else return(OS_ERROR); }