diff options
Diffstat (limited to 'board/MAI/bios_emulator/scitech/src/pm/stub/pm.c')
| -rw-r--r-- | board/MAI/bios_emulator/scitech/src/pm/stub/pm.c | 420 |
1 files changed, 210 insertions, 210 deletions
diff --git a/board/MAI/bios_emulator/scitech/src/pm/stub/pm.c b/board/MAI/bios_emulator/scitech/src/pm/stub/pm.c index 51656b05e3..5f278c32df 100644 --- a/board/MAI/bios_emulator/scitech/src/pm/stub/pm.c +++ b/board/MAI/bios_emulator/scitech/src/pm/stub/pm.c @@ -38,13 +38,13 @@ #include <stdlib.h> #include <string.h> -// TODO: Include any OS specific headers here! +/* TODO: Include any OS specific headers here! */ /*--------------------------- Global variables ----------------------------*/ -// TODO: If you support access to the BIOS, the following VESABuf globals -// keep track of a single VESA transfer buffer. If you don't support -// access to the BIOS, remove these variables. +/* TODO: If you support access to the BIOS, the following VESABuf globals */ +/* keep track of a single VESA transfer buffer. If you don't support */ +/* access to the BIOS, remove these variables. */ static uint VESABuf_len = 1024; /* Length of the VESABuf buffer */ static void *VESABuf_ptr = NULL; /* Near pointer to VESABuf */ @@ -61,12 +61,12 @@ Initialise the PM library. ****************************************************************************/ void PMAPI PM_init(void) { - // TODO: Do any initialisation in here. This includes getting IOPL - // access for the process calling PM_init. This will get called - // more than once. + /* TODO: Do any initialisation in here. This includes getting IOPL */ + /* access for the process calling PM_init. This will get called */ + /* more than once. */ - // TODO: If you support the supplied MTRR register stuff (you need to - // be at ring 0 for this!), you should initialise it in here. + /* TODO: If you support the supplied MTRR register stuff (you need to */ + /* be at ring 0 for this!), you should initialise it in here. */ /* MTRR_init(); */ } @@ -77,7 +77,7 @@ Return the operating system type identifier. ****************************************************************************/ long PMAPI PM_getOSType(void) { - // TODO: Change this to return the define for your OS from drvlib/os.h + /* TODO: Change this to return the define for your OS from drvlib/os.h */ return _OS_MYOS; } @@ -97,9 +97,9 @@ void PMAPI PM_backslash( { uint pos = strlen(s); if (s[pos-1] != '/') { - s[pos] = '/'; - s[pos+1] = '\0'; - } + s[pos] = '/'; + s[pos+1] = '\0'; + } } /**************************************************************************** @@ -119,11 +119,11 @@ Report a fatal error condition and halt the program. void PMAPI PM_fatalError( const char *msg) { - // TODO: If you are running in a GUI environment without a console, - // this needs to be changed to bring up a fatal error message - // box and terminate the program. + /* TODO: If you are running in a GUI environment without a console, */ + /* this needs to be changed to bring up a fatal error message */ + /* box and terminate the program. */ if (fatalErrorCleanup) - fatalErrorCleanup(); + fatalErrorCleanup(); fprintf(stderr,"%s\n", msg); exit(1); } @@ -134,9 +134,9 @@ Exit handler to kill the VESA transfer buffer. ****************************************************************************/ static void ExitVBEBuf(void) { - // TODO: If you do not have BIOS access, remove this function. + /* TODO: If you do not have BIOS access, remove this function. */ if (VESABuf_ptr) - PM_freeRealSeg(VESABuf_ptr); + PM_freeRealSeg(VESABuf_ptr); VESABuf_ptr = 0; } @@ -149,14 +149,14 @@ void * PMAPI PM_getVESABuf( uint *rseg, uint *roff) { - // TODO: If you do not have BIOS access, simply delete the guts of - // this function and return NULL. + /* TODO: If you do not have BIOS access, simply delete the guts of */ + /* this function and return NULL. */ if (!VESABuf_ptr) { - /* Allocate a global buffer for communicating with the VESA VBE */ - if ((VESABuf_ptr = PM_allocRealSeg(VESABuf_len, &VESABuf_rseg, &VESABuf_roff)) == NULL) - return NULL; - atexit(ExitVBEBuf); - } + /* Allocate a global buffer for communicating with the VESA VBE */ + if ((VESABuf_ptr = PM_allocRealSeg(VESABuf_len, &VESABuf_rseg, &VESABuf_roff)) == NULL) + return NULL; + atexit(ExitVBEBuf); + } *len = VESABuf_len; *rseg = VESABuf_rseg; *roff = VESABuf_roff; @@ -169,9 +169,9 @@ Check if a key has been pressed. ****************************************************************************/ int PMAPI PM_kbhit(void) { - // TODO: This function checks if a key is available to be read. This - // should be implemented, but is mostly used by the test programs - // these days. + /* TODO: This function checks if a key is available to be read. This */ + /* should be implemented, but is mostly used by the test programs */ + /* these days. */ return true; } @@ -181,9 +181,9 @@ Wait for and return the next keypress. ****************************************************************************/ int PMAPI PM_getch(void) { - // TODO: This returns the ASCII code of the key pressed. This - // should be implemented, but is mostly used by the test programs - // these days. + /* TODO: This returns the ASCII code of the key pressed. This */ + /* should be implemented, but is mostly used by the test programs */ + /* these days. */ return 0xD; } @@ -193,12 +193,12 @@ Open a fullscreen console mode for output. ****************************************************************************/ int PMAPI PM_openConsole(void) { - // TODO: Opens up a fullscreen console for graphics output. If your - // console does not have graphics/text modes, this can be left - // empty. The main purpose of this is to disable console switching - // when in graphics modes if you can switch away from fullscreen - // consoles (if you want to allow switching, this can be done - // elsewhere with a full save/restore state of the graphics mode). + /* TODO: Opens up a fullscreen console for graphics output. If your */ + /* console does not have graphics/text modes, this can be left */ + /* empty. The main purpose of this is to disable console switching */ + /* when in graphics modes if you can switch away from fullscreen */ + /* consoles (if you want to allow switching, this can be done */ + /* elsewhere with a full save/restore state of the graphics mode). */ return 0; } @@ -208,9 +208,9 @@ Return the size of the state buffer used to save the console state. ****************************************************************************/ int PMAPI PM_getConsoleStateSize(void) { - // TODO: Returns the size of the console state buffer used to save the - // state of the console before going into graphics mode. This is - // used to restore the console back to normal when we are done. + /* TODO: Returns the size of the console state buffer used to save the */ + /* state of the console before going into graphics mode. This is */ + /* used to restore the console back to normal when we are done. */ return 1; } @@ -222,11 +222,11 @@ void PMAPI PM_saveConsoleState( void *stateBuf, int console_id) { - // TODO: Saves the state of the console into the state buffer. This is - // used to restore the console back to normal when we are done. - // We will always restore 80x25 text mode after being in graphics - // mode, so if restoring text mode is all you need to do this can - // be left empty. + /* TODO: Saves the state of the console into the state buffer. This is */ + /* used to restore the console back to normal when we are done. */ + /* We will always restore 80x25 text mode after being in graphics */ + /* mode, so if restoring text mode is all you need to do this can */ + /* be left empty. */ } /**************************************************************************** @@ -237,11 +237,11 @@ void PMAPI PM_restoreConsoleState( const void *stateBuf, int console_id) { - // TODO: Restore the state of the console from the state buffer. This is - // used to restore the console back to normal when we are done. - // We will always restore 80x25 text mode after being in graphics - // mode, so if restoring text mode is all you need to do this can - // be left empty. + /* TODO: Restore the state of the console from the state buffer. This is */ + /* used to restore the console back to normal when we are done. */ + /* We will always restore 80x25 text mode after being in graphics */ + /* mode, so if restoring text mode is all you need to do this can */ + /* be left empty. */ } /**************************************************************************** @@ -251,7 +251,7 @@ Close the console and return to non-fullscreen console mode. void PMAPI PM_closeConsole( int console_id) { - // TODO: Close the console when we are done, going back to text mode. + /* TODO: Close the console when we are done, going back to text mode. */ } /**************************************************************************** @@ -262,8 +262,8 @@ void PM_setOSCursorLocation( int x, int y) { - // TODO: Set the OS console cursor location to the new value. This is - // generally used for new OS ports (used mostly for DOS). + /* TODO: Set the OS console cursor location to the new value. This is */ + /* generally used for new OS ports (used mostly for DOS). */ } /**************************************************************************** @@ -274,8 +274,8 @@ void PM_setOSScreenWidth( int width, int height) { - // TODO: Set the OS console screen width. This is generally unused for - // new OS ports. + /* TODO: Set the OS console screen width. This is generally unused for */ + /* new OS ports. */ } /**************************************************************************** @@ -286,12 +286,12 @@ ibool PMAPI PM_setRealTimeClockHandler( PM_intHandler ih, int frequency) { - // TODO: Install a real time clock interrupt handler. Normally this - // will not be supported from most OS'es in user land, so an - // alternative mechanism is needed to enable software stereo. - // Hence leave this unimplemented unless you have a high priority - // mechanism to call the 32-bit callback when the real time clock - // interrupt fires. + /* TODO: Install a real time clock interrupt handler. Normally this */ + /* will not be supported from most OS'es in user land, so an */ + /* alternative mechanism is needed to enable software stereo. */ + /* Hence leave this unimplemented unless you have a high priority */ + /* mechanism to call the 32-bit callback when the real time clock */ + /* interrupt fires. */ return false; } @@ -302,9 +302,9 @@ Set the real time clock frequency (for stereo modes). void PMAPI PM_setRealTimeClockFrequency( int frequency) { - // TODO: Set the real time clock interrupt frequency. Used for stereo - // LC shutter glasses when doing software stereo. Usually sets - // the frequency to around 2048 Hz. + /* TODO: Set the real time clock interrupt frequency. Used for stereo */ + /* LC shutter glasses when doing software stereo. Usually sets */ + /* the frequency to around 2048 Hz. */ } /**************************************************************************** @@ -313,7 +313,7 @@ Restore the original real time clock handler. ****************************************************************************/ void PMAPI PM_restoreRealTimeClockHandler(void) { - // TODO: Restores the real time clock handler. + /* TODO: Restores the real time clock handler. */ } /**************************************************************************** @@ -333,8 +333,8 @@ Return the drive letter for the boot drive. ****************************************************************************/ char PMAPI PM_getBootDrive(void) { - // TODO: Return the boot drive letter for the OS. Normally this is 'c' - // for DOS based OS'es and '/' for Unices. + /* TODO: Return the boot drive letter for the OS. Normally this is 'c' */ + /* for DOS based OS'es and '/' for Unices. */ return '/'; } @@ -353,8 +353,8 @@ Return the path to the Nucleus driver files. ****************************************************************************/ const char * PMAPI PM_getNucleusPath(void) { - // TODO: Change this to the default path to Nucleus driver files. The - // following is the default for Unices. + /* TODO: Change this to the default path to Nucleus driver files. The */ + /* following is the default for Unices. */ char *env = getenv("NUCLEUS_PATH"); return env ? env : "/usr/lib/nucleus"; } @@ -378,8 +378,8 @@ Return a unique identifier for the machine if possible. ****************************************************************************/ const char * PMAPI PM_getUniqueID(void) { - // TODO: Return a unique ID for the machine. If a unique ID is not - // available, return the machine name. + /* TODO: Return a unique ID for the machine. If a unique ID is not */ + /* available, return the machine name. */ static char buf[128]; gethostname(buf, 128); return buf; @@ -391,7 +391,7 @@ Get the name of the machine on the network. ****************************************************************************/ const char * PMAPI PM_getMachineName(void) { - // TODO: Return the network machine name for the machine. + /* TODO: Return the network machine name for the machine. */ static char buf[128]; gethostname(buf, 128); return buf; @@ -403,10 +403,10 @@ Return a pointer to the real mode BIOS data area. ****************************************************************************/ void * PMAPI PM_getBIOSPointer(void) { - // TODO: This returns a pointer to the real mode BIOS data area. If you - // do not support BIOS access, you can simply return NULL here. + /* TODO: This returns a pointer to the real mode BIOS data area. If you */ + /* do not support BIOS access, you can simply return NULL here. */ if (!zeroPtr) - zeroPtr = PM_mapPhysicalAddr(0,0xFFFFF,true); + zeroPtr = PM_mapPhysicalAddr(0,0xFFFFF,true); return (void*)(zeroPtr + 0x400); } @@ -418,7 +418,7 @@ void * PMAPI PM_getA0000Pointer(void) { static void *bankPtr; if (!bankPtr) - bankPtr = PM_mapPhysicalAddr(0xA0000,0xFFFF,true); + bankPtr = PM_mapPhysicalAddr(0xA0000,0xFFFF,true); return bankPtr; } @@ -431,23 +431,23 @@ void * PMAPI PM_mapPhysicalAddr( ulong limit, ibool isCached) { - // TODO: This function maps a physical memory address to a linear - // address in the address space of the calling process. - - // NOTE: This function *must* be able to handle any phsyical base - // address, and hence you will have to handle rounding of - // the physical base address to a page boundary (ie: 4Kb on - // x86 CPU's) to be able to properly map in the memory - // region. - - // NOTE: If possible the isCached bit should be used to ensure that - // the PCD (Page Cache Disable) and PWT (Page Write Through) - // bits are set to disable caching for a memory mapping used - // for MMIO register access. We also disable caching using - // the MTRR registers for Pentium Pro and later chipsets so if - // MTRR support is enabled for your OS then you can safely ignore - // the isCached flag and always enable caching in the page - // tables. + /* TODO: This function maps a physical memory address to a linear */ + /* address in the address space of the calling process. */ + + /* NOTE: This function *must* be able to handle any phsyical base */ + /* address, and hence you will have to handle rounding of */ + /* the physical base address to a page boundary (ie: 4Kb on */ + /* x86 CPU's) to be able to properly map in the memory */ + /* region. */ + + /* NOTE: If possible the isCached bit should be used to ensure that */ + /* the PCD (Page Cache Disable) and PWT (Page Write Through) */ + /* bits are set to disable caching for a memory mapping used */ + /* for MMIO register access. We also disable caching using */ + /* the MTRR registers for Pentium Pro and later chipsets so if */ + /* MTRR support is enabled for your OS then you can safely ignore */ + /* the isCached flag and always enable caching in the page */ + /* tables. */ return NULL; } @@ -459,9 +459,9 @@ void PMAPI PM_freePhysicalAddr( void *ptr, ulong limit) { - // TODO: This function will free a physical memory mapping previously - // allocated with PM_mapPhysicalAddr() if at all possible. If - // you can't free physical memory mappings, simply do nothing. + /* TODO: This function will free a physical memory mapping previously */ + /* allocated with PM_mapPhysicalAddr() if at all possible. If */ + /* you can't free physical memory mappings, simply do nothing. */ } /**************************************************************************** @@ -470,36 +470,36 @@ Find the physical address of a linear memory address in current process. ****************************************************************************/ ulong PMAPI PM_getPhysicalAddr(void *p) { - // TODO: This function should find the physical address of a linear - // address. + /* TODO: This function should find the physical address of a linear */ + /* address. */ return 0xFFFFFFFFUL; } void PMAPI PM_sleep(ulong milliseconds) { - // TODO: Put the process to sleep for milliseconds + /* TODO: Put the process to sleep for milliseconds */ } int PMAPI PM_getCOMPort(int port) { - // TODO: Re-code this to determine real values using the Plug and Play - // manager for the OS. + /* TODO: Re-code this to determine real values using the Plug and Play */ + /* manager for the OS. */ switch (port) { - case 0: return 0x3F8; - case 1: return 0x2F8; - } + case 0: return 0x3F8; + case 1: return 0x2F8; + } return 0; } int PMAPI PM_getLPTPort(int port) { - // TODO: Re-code this to determine real values using the Plug and Play - // manager for the OS. + /* TODO: Re-code this to determine real values using the Plug and Play */ + /* manager for the OS. */ switch (port) { - case 0: return 0x3BC; - case 1: return 0x378; - case 2: return 0x278; - } + case 0: return 0x3BC; + case 1: return 0x378; + case 2: return 0x278; + } return 0; } @@ -510,11 +510,11 @@ Allocate a block of (unnamed) shared memory. void * PMAPI PM_mallocShared( long size) { - // TODO: This is used to allocate memory that is shared between process - // that all access the common Nucleus drivers via a common display - // driver DLL. If your OS does not support shared memory (or if - // the display driver does not need to allocate shared memory - // for each process address space), this should just call PM_malloc. + /* TODO: This is used to allocate memory that is shared between process */ + /* that all access the common Nucleus drivers via a common display */ + /* driver DLL. If your OS does not support shared memory (or if */ + /* the display driver does not need to allocate shared memory */ + /* for each process address space), this should just call PM_malloc. */ return PM_malloc(size); } @@ -525,10 +525,10 @@ Free a block of shared memory. void PMAPI PM_freeShared( void *ptr) { - // TODO: Free the shared memory block. This will be called in the context - // of the original calling process that allocated the shared - // memory with PM_mallocShared. Simply call PM_free if you do not - // need this. + /* TODO: Free the shared memory block. This will be called in the context */ + /* of the original calling process that allocated the shared */ + /* memory with PM_mallocShared. Simply call PM_free if you do not */ + /* need this. */ PM_free(ptr); } @@ -542,16 +542,16 @@ void * PMAPI PM_mapToProcess( void *base, ulong limit) { - // TODO: This function is used to map a physical memory mapping - // previously allocated with PM_mapPhysicalAddr into the - // address space of the calling process. If the memory mapping - // allocated by PM_mapPhysicalAddr is global to all processes, - // simply return the pointer. + /* TODO: This function is used to map a physical memory mapping */ + /* previously allocated with PM_mapPhysicalAddr into the */ + /* address space of the calling process. If the memory mapping */ + /* allocated by PM_mapPhysicalAddr is global to all processes, */ + /* simply return the pointer. */ - // NOTE: This function must also handle rounding to page boundaries, - // since this function is used to map in shared memory buffers - // allocated with PM_mapPhysicalAddr(). Hence if you aligned - // the physical address above, then you also need to do it here. + /* NOTE: This function must also handle rounding to page boundaries, */ + /* since this function is used to map in shared memory buffers */ + /* allocated with PM_mapPhysicalAddr(). Hence if you aligned */ + /* the physical address above, then you also need to do it here. */ return base; } @@ -563,11 +563,11 @@ void * PMAPI PM_mapRealPointer( uint r_seg, uint r_off) { - // TODO: This function maps a real mode memory pointer into the - // calling processes address space as a 32-bit near pointer. If - // you do not support BIOS access, simply return NULL here. + /* TODO: This function maps a real mode memory pointer into the */ + /* calling processes address space as a 32-bit near pointer. If */ + /* you do not support BIOS access, simply return NULL here. */ if (!zeroPtr) - zeroPtr = PM_mapPhysicalAddr(0,0xFFFFF); + zeroPtr = PM_mapPhysicalAddr(0,0xFFFFF); return (void*)(zeroPtr + MK_PHYS(r_seg,r_off)); } @@ -580,10 +580,10 @@ void * PMAPI PM_allocRealSeg( uint *r_seg, uint *r_off) { - // TODO: This function allocates a block of real mode memory for the - // calling process used to communicate with real mode BIOS - // functions. If you do not support BIOS access, simply return - // NULL here. + /* TODO: This function allocates a block of real mode memory for the */ + /* calling process used to communicate with real mode BIOS */ + /* functions. If you do not support BIOS access, simply return */ + /* NULL here. */ return NULL; } @@ -594,8 +594,8 @@ Free a block of real mode memory. void PMAPI PM_freeRealSeg( void *mem) { - // TODO: Frees a previously allocated real mode memory block. If you - // do not support BIOS access, this function should be empty. + /* TODO: Frees a previously allocated real mode memory block. If you */ + /* do not support BIOS access, this function should be empty. */ } /**************************************************************************** @@ -606,9 +606,9 @@ void PMAPI DPMI_int86( int intno, DPMI_regs *regs) { - // TODO: This function calls the real mode BIOS using the passed in - // register structure. If you do not support real mode BIOS - // access, this function should be empty. + /* TODO: This function calls the real mode BIOS using the passed in */ + /* register structure. If you do not support real mode BIOS */ + /* access, this function should be empty. */ } /**************************************************************************** @@ -620,9 +620,9 @@ int PMAPI PM_int86( RMREGS *in, RMREGS *out) { - // TODO: This function calls the real mode BIOS using the passed in - // register structure. If you do not support real mode BIOS - // access, this function should return 0. + /* TODO: This function calls the real mode BIOS using the passed in */ + /* register structure. If you do not support real mode BIOS */ + /* access, this function should return 0. */ return 0; } @@ -636,9 +636,9 @@ int PMAPI PM_int86x( RMREGS *out, RMSREGS *sregs) { - // TODO: This function calls the real mode BIOS using the passed in - // register structure. If you do not support real mode BIOS - // access, this function should return 0. + /* TODO: This function calls the real mode BIOS using the passed in */ + /* register structure. If you do not support real mode BIOS */ + /* access, this function should return 0. */ return 0; } @@ -652,9 +652,9 @@ void PMAPI PM_callRealMode( RMREGS *in, RMSREGS *sregs) { - // TODO: This function calls a real mode far function with a far call. - // If you do not support BIOS access, this function should be - // empty. + /* TODO: This function calls a real mode far function with a far call. */ + /* If you do not support BIOS access, this function should be */ + /* empty. */ } /**************************************************************************** @@ -665,9 +665,9 @@ void PMAPI PM_availableMemory( ulong *physical, ulong *total) { - // TODO: Report the amount of available memory, both the amount of - // physical memory left and the amount of virtual memory left. - // If the OS does not provide these services, report 0's. + /* TODO: Report the amount of available memory, both the amount of */ + /* physical memory left and the amount of virtual memory left. */ + /* If the OS does not provide these services, report 0's. */ *physical = *total = 0; } @@ -681,10 +681,10 @@ void * PMAPI PM_allocLockedMem( ibool contiguous, ibool below16M) { - // TODO: Allocate a block of locked, physical memory of the specified - // size. This is used for bus master operations. If this is not - // supported by the OS, return NULL and bus mastering will not - // be used. + /* TODO: Allocate a block of locked, physical memory of the specified */ + /* size. This is used for bus master operations. If this is not */ + /* supported by the OS, return NULL and bus mastering will not */ + /* be used. */ return NULL; } @@ -697,7 +697,7 @@ void PMAPI PM_freeLockedMem( uint size, ibool contiguous) { - // TODO: Free a memory block allocated with PM_allocLockedMem. + /* TODO: Free a memory block allocated with PM_allocLockedMem. */ } /**************************************************************************** @@ -709,9 +709,9 @@ void PMAPI PM_setBankA( { RMREGS regs; - // TODO: This does a bank switch function by calling the real mode - // VESA BIOS. If you do not support BIOS access, this function should - // be empty. + /* TODO: This does a bank switch function by calling the real mode */ + /* VESA BIOS. If you do not support BIOS access, this function should */ + /* be empty. */ regs.x.ax = 0x4F05; regs.x.bx = 0x0000; regs.x.dx = bank; @@ -727,9 +727,9 @@ void PMAPI PM_setBankAB( { RMREGS regs; - // TODO: This does a bank switch function by calling the real mode - // VESA BIOS. If you do not support BIOS access, this function should - // be empty. + /* TODO: This does a bank switch function by calling the real mode */ + /* VESA BIOS. If you do not support BIOS access, this function should */ + /* be empty. */ regs.x.ax = 0x4F05; regs.x.bx = 0x0000; regs.x.dx = bank; @@ -751,9 +751,9 @@ void PMAPI PM_setCRTStart( { RMREGS regs; - // TODO: This changes the display start address by calling the real mode - // VESA BIOS. If you do not support BIOS access, this function - // should be empty. + /* TODO: This changes the display start address by calling the real mode */ + /* VESA BIOS. If you do not support BIOS access, this function */ + /* should be empty. */ regs.x.ax = 0x4F07; regs.x.bx = waitVRT; regs.x.cx = x; @@ -770,17 +770,17 @@ ibool PMAPI PM_enableWriteCombine( ulong length, uint type) { - // TODO: This function should enable Pentium Pro and Pentium II MTRR - // write combining for the passed in physical memory base address - // and length. Normally this is done via calls to an OS specific - // device driver as this can only be done at ring 0. - // - // NOTE: This is a *very* important function to implement! If you do - // not implement, graphics performance on the latest Intel chips - // will be severly impaired. For sample code that can be used - // directly in a ring 0 device driver, see the MSDOS implementation - // which includes assembler code to do this directly (if the - // program is running at ring 0). + /* TODO: This function should enable Pentium Pro and Pentium II MTRR */ + /* write combining for the passed in physical memory base address */ + /* and length. Normally this is done via calls to an OS specific */ + /* device driver as this can only be done at ring 0. */ + /* */ + /* NOTE: This is a *very* important function to implement! If you do */ + /* not implement, graphics performance on the latest Intel chips */ + /* will be severly impaired. For sample code that can be used */ + /* directly in a ring 0 device driver, see the MSDOS implementation */ + /* which includes assembler code to do this directly (if the */ + /* program is running at ring 0). */ return false; } @@ -793,19 +793,19 @@ ibool PMAPI PM_doBIOSPOST( ulong BIOSPhysAddr, void *mappedBIOS) { - // TODO: This function is used to run the BIOS POST code on a secondary - // controller to initialise it for use. This is not necessary - // for multi-controller operation, but it will make it a lot - // more convenicent for end users (otherwise they have to boot - // the system once with the secondary controller as primary, and - // then boot with both controllers installed). - // - // Even if you don't support full BIOS access, it would be - // adviseable to be able to POST the secondary controllers in the - // system using this function as a minimum requirement. Some - // graphics hardware has registers that contain values that only - // the BIOS knows about, which makes bring up a card from cold - // reset difficult if the BIOS has not POST'ed it. + /* TODO: This function is used to run the BIOS POST code on a secondary */ + /* controller to initialise it for use. This is not necessary */ + /* for multi-controller operation, but it will make it a lot */ + /* more convenicent for end users (otherwise they have to boot */ + /* the system once with the secondary controller as primary, and */ + /* then boot with both controllers installed). */ + /* */ + /* Even if you don't support full BIOS access, it would be */ + /* adviseable to be able to POST the secondary controllers in the */ + /* system using this function as a minimum requirement. Some */ + /* graphics hardware has registers that contain values that only */ + /* the BIOS knows about, which makes bring up a card from cold */ + /* reset difficult if the BIOS has not POST'ed it. */ return false; } @@ -817,8 +817,8 @@ shared libraries, simply return NULL. PM_MODULE PMAPI PM_loadLibrary( const char *szDLLName) { - // TODO: This function should load a native shared library from disk - // given the path to the library. + /* TODO: This function should load a native shared library from disk */ + /* given the path to the library. */ (void)szDLLName; return NULL; } @@ -831,8 +831,8 @@ void * PMAPI PM_getProcAddress( PM_MODULE hModule, const char *szProcName) { - // TODO: This function should return the address of a named procedure - // from a native shared library. + /* TODO: This function should return the address of a named procedure */ + /* from a native shared library. */ (void)hModule; (void)szProcName; return NULL; @@ -845,7 +845,7 @@ Unload a shared library. void PMAPI PM_freeLibrary( PM_MODULE hModule) { - // TODO: This function free a previously loaded native shared library. + /* TODO: This function free a previously loaded native shared library. */ (void)hModule; } @@ -860,8 +860,8 @@ the switch occurred so it can be properly restored. int PMAPI PM_setIOPL( int level) { - // TODO: This function should enable IOPL for the task (if IOPL is - // not always enabled for the app through some other means). + /* TODO: This function should enable IOPL for the task (if IOPL is */ + /* not always enabled for the app through some other means). */ return level; } @@ -873,9 +873,9 @@ void *PMAPI PM_findFirstFile( const char *filename, PM_findData *findData) { - // TODO: This function should start a directory enumeration search - // given the filename (with wildcards). The data should be - // converted and returned in the findData standard form. + /* TODO: This function should start a directory enumeration search */ + /* given the filename (with wildcards). The data should be */ + /* converted and returned in the findData standard form. */ (void)filename; (void)findData; return PM_FILE_INVALID; @@ -889,10 +889,10 @@ ibool PMAPI PM_findNextFile( void *handle, PM_findData *findData) { - // TODO: This function should find the next file in directory enumeration - // search given the search criteria defined in the call to - // PM_findFirstFile. The data should be converted and returned - // in the findData standard form. + /* TODO: This function should find the next file in directory enumeration */ + /* search given the search criteria defined in the call to */ + /* PM_findFirstFile. The data should be converted and returned */ + /* in the findData standard form. */ (void)handle; (void)findData; return false; @@ -905,8 +905,8 @@ Function to close the find process void PMAPI PM_findClose( void *handle) { - // TODO: This function should close the find process. This may do - // nothing for some OS'es. + /* TODO: This function should close the find process. This may do */ + /* nothing for some OS'es. */ (void)handle; } @@ -927,7 +927,7 @@ ibool PMAPI PM_driveValid( char drive) { if (drive == 3) - return true; + return true; return false; } @@ -954,7 +954,7 @@ void PMAPI PM_setFileAttr( const char *filename, uint attrib) { - // TODO: Set the file attributes for a file + /* TODO: Set the file attributes for a file */ (void)filename; (void)attrib; } |
