Re: [Syllable-kernel] Syllable-kernel Digest, Vol 2, Issue 2

[Nico v. H. <va...@va...>]

I don`t understand the following lines, so i can`t solve the problem,
please help!!

325 static void tg3_write_indirect_reg32(struct tg3 *tp, u32 off, u32 val)
326 {
327  //PCI_bus_s *psBus = g_psBus;
328  PCI_bus_s* psBus = get_busmanager( PCI_BUS_NAME, PCI_BUS_VERSION ); 
329  if( psBus == NULL ) {
330      return( NULL );
331     }
332  
333  unsigned long flags;
334  
335  spin_lock_irqsave(&tp->indirect_lock, flags);
336  psBus->write_pci_config(
337   &(tp)->pdev->nBus, 
338   &tp->pdev->nDevice, 
339   &tp->pdev->nFunction, 
340   TG3PCI_REG_BASE_ADDR, 
341   sizeof(off), 
342   (uint32)off);
343  //pci_write_config_dword(tp->pdev, TG3PCI_REG_BASE_ADDR, off);
344  psBus->write_pci_config(
345   &tp->pdev->nBus, 
346   &tp->pdev->nDevice, 
347   &tp->pdev->nFunction, 
348   TG3PCI_REG_DATA, 
349   val);
350  //pci_write_config_dword(tp->pdev, TG3PCI_REG_DATA, val);
351  spin_unlock_irqrestore(&tp->indirect_lock, flags);
352 }

bash-2.03$ make
cc -kernel -fno-PIC -c tg3.c -o objs/tg3.o
tg3.c:218: warning: parameter names (without types) in function declaration
tg3.c:218: warning: data definition has no type or storage class
tg3.c: In function `tg3_write_indirect_reg32':
tg3.c:330: warning: `return' with a value, in function returning void
tg3.c:337: error: dereferencing pointer to incomplete type
tg3.c:338: error: dereferencing pointer to incomplete type
tg3.c:339: error: dereferencing pointer to incomplete type
tg3.c:345: error: dereferencing pointer to incomplete type
tg3.c:346: error: dereferencing pointer to incomplete type
tg3.c:347: error: dereferencing pointer to incomplete type
tg3.c:349: error: too few arguments to function
tg3.c:352:2: warning: no newline at end of file
make: *** [objs/tg3.o] Error 1

I really want to understand what the psBus does and their functions...
can anyone explain and help to solve this??