diff options
| -rw-r--r-- | drivers/staging/dt3155/allocator.c | 3 | ||||
| -rw-r--r-- | drivers/staging/dt3155/dt3155_drv.c | 115 | ||||
| -rw-r--r-- | drivers/staging/dt3155/dt3155_drv.h | 5 | ||||
| -rw-r--r-- | drivers/staging/dt3155/dt3155_isr.c | 41 | ||||
| -rw-r--r-- | drivers/staging/dt3155/pci-compat.h | 97 | ||||
| -rw-r--r-- | drivers/staging/dt3155/sysdep.h | 820 |
6 files changed, 8 insertions, 1073 deletions
diff --git a/drivers/staging/dt3155/allocator.c b/drivers/staging/dt3155/allocator.c index c1b85447c0e0..4983c9379e57 100644 --- a/drivers/staging/dt3155/allocator.c +++ b/drivers/staging/dt3155/allocator.c @@ -54,11 +54,10 @@ #include <linux/errno.h> #include <linux/types.h> #include <linux/mm.h> /* PAGE_ALIGN() */ +#include <linux/io.h> #include <asm/page.h> -#include "sysdep.h" - /*#define ALL_DEBUG*/ #define ALL_MSG "allocator: " diff --git a/drivers/staging/dt3155/dt3155_drv.c b/drivers/staging/dt3155/dt3155_drv.c index 950956c08eda..6b40d422ad0c 100644 --- a/drivers/staging/dt3155/dt3155_drv.c +++ b/drivers/staging/dt3155/dt3155_drv.c @@ -59,13 +59,10 @@ extern void printques(int); #ifdef MODULE #include <linux/module.h> -#include <linux/version.h> #include <linux/interrupt.h> -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,10) MODULE_LICENSE("GPL"); -#endif #endif @@ -105,11 +102,7 @@ int dt3155_errno = 0; #endif /* wait queue for interrupts */ -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,1) wait_queue_head_t dt3155_read_wait_queue[ MAXBOARDS ]; -#else -struct wait_queue *dt3155_read_wait_queue[ MAXBOARDS ]; -#endif #define DT_3155_SUCCESS 0 #define DT_3155_FAILURE -EIO @@ -186,11 +179,7 @@ static inline void dt3155_isr( int irq, void *dev_id, struct pt_regs *regs ) { int minor = -1; int index; -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) unsigned long flags; -#else - int flags; -#endif u_long buffer_addr; /* find out who issued the interrupt */ @@ -264,21 +253,12 @@ static inline void dt3155_isr( int irq, void *dev_id, struct pt_regs *regs ) buffer_addr = dt3155_fbuffer[ minor ]-> frame_info[ dt3155_fbuffer[ minor ]->active_buf ].addr + (DT3155_MAX_ROWS / 2) * stride; -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) local_save_flags(flags); local_irq_disable(); -#else - save_flags( flags ); - cli(); -#endif wake_up_interruptible( &dt3155_read_wait_queue[ minor ] ); /* Set up the DMA address for the next field */ -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) local_irq_restore(flags); -#else - restore_flags( flags ); -#endif WriteMReg((dt3155_lbase[ minor ] + ODD_DMA_START), buffer_addr); } @@ -350,13 +330,8 @@ static inline void dt3155_isr( int irq, void *dev_id, struct pt_regs *regs ) DT3155_STATE_FLD ) { -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) local_save_flags(flags); local_irq_disable(); -#else - save_flags( flags ); - cli(); -#endif #ifdef DEBUG_QUES_B printques( minor ); @@ -412,11 +387,7 @@ static inline void dt3155_isr( int irq, void *dev_id, struct pt_regs *regs ) wake_up_interruptible( &dt3155_read_wait_queue[ minor ] ); -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) local_irq_restore(flags); -#else - restore_flags( flags ); -#endif } @@ -675,11 +646,6 @@ static int dt3155_mmap (struct file * file, struct vm_area_struct * vma) /* which device are we mmapping? */ int minor = MINOR(file->f_dentry->d_inode->i_rdev); unsigned long offset; - - /* not actually sure when vm_area_struct changed, - but it was in 2.3 sometime */ -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,20) - offset = vma->vm_pgoff << PAGE_SHIFT; if (offset >= __pa(high_memory) || (file->f_flags & O_SYNC)) @@ -688,34 +654,17 @@ static int dt3155_mmap (struct file * file, struct vm_area_struct * vma) /* Don't try to swap out physical pages.. */ vma->vm_flags |= VM_RESERVED; -#else - - if (vma->vm_offset & ~PAGE_MASK) - return -ENXIO; - - offset = vma->vm_offset; - -#endif - /* they are mapping the registers or the buffer */ if ((offset == dt3155_status[minor].reg_addr && vma->vm_end - vma->vm_start == PCI_PAGE_SIZE) || (offset == dt3155_status[minor].mem_addr && vma->vm_end - vma->vm_start == dt3155_status[minor].mem_size)) { -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) if (remap_pfn_range(vma, vma->vm_start, offset >> PAGE_SHIFT, vma->vm_end - vma->vm_start, - vma->vm_page_prot)) -#else - if (remap_page_range(vma->vm_start, - offset, - vma->vm_end - vma->vm_start, - vma->vm_page_prot)) -#endif - { + vma->vm_page_prot)) { printk("DT3155: remap_page_range() failed.\n"); return -EAGAIN; } @@ -761,9 +710,6 @@ static int dt3155_open( struct inode* inode, struct file* filep) printk("DT3155: Device opened.\n"); dt3155_dev_open[ minor ] = 1 ; -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) - MOD_INC_USE_COUNT; -#endif dt3155_flush( minor ); @@ -771,11 +717,7 @@ static int dt3155_open( struct inode* inode, struct file* filep) int_csr_r.reg = 0; WriteMReg( (dt3155_lbase[ minor ] + INT_CSR), int_csr_r.reg ); -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,1) init_waitqueue_head(&(dt3155_read_wait_queue[minor])); -#else - dt3155_read_wait_queue[minor] = NULL; -#endif return 0; } @@ -798,9 +740,6 @@ static int dt3155_close( struct inode *inode, struct file *filep) } else { -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) - MOD_DEC_USE_COUNT; -#endif dt3155_dev_open[ minor ] = 0; if (dt3155_status[ minor ].state != DT3155_STATE_IDLE) @@ -846,8 +785,6 @@ static int dt3155_read ( /* if (dt3155_status[minor].state == DT3155_STATE_IDLE)*/ /* return -EBUSY;*/ -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,1) - /* non-blocking reads should return if no data */ if (filep->f_flags & O_NDELAY) { @@ -877,34 +814,6 @@ static int dt3155_read ( } } -#else - while ((frame_index = dt3155_get_ready_buffer(minor)) < 0 ) - { - int index; - if (filep->f_flags & O_NDELAY) - return 0; - - /* sleep till data arrives , or we get interrupted */ - interruptible_sleep_on(&dt3155_read_wait_queue[minor]); - for (index = 0; index < _NSIG_WORDS; index++) - { - /* - * Changing the next line of code below to this: - * if (current->pending.signal.sig[index] & - * ~current->blocked.sig[index]) - * would also work on a 2.4 kernel, however, the above - * method is preferred & more portable. - */ - if (current->signal.sig[index] & ~current->blocked.sig[index]) - { - printk ("DT3155: read: interrupted\n"); - return -EINTR; - } - } - } - -#endif - frame_info_p = &dt3155_status[minor].fbuffer.frame_info[frame_index]; /* make this an offset */ @@ -1046,12 +955,6 @@ int init_module(void) int rcode = 0; char *devname[ MAXBOARDS ]; -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,1) -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) - SET_MODULE_OWNER(&dt3155_fops); -#endif -#endif - devname[ 0 ] = "dt3155a"; #if MAXBOARDS == 2 devname[ 1 ] = "dt3155b"; @@ -1091,17 +994,6 @@ int init_module(void) /* Now let's find the hardware. find_PCI() will set ndevices to the * number of cards found in this machine. */ -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) - if ( !(pcibios_present()) ) - { - printk("DT3155: Error: No PCI bios on this machine \n"); - if( unregister_chrdev( dt3155_major, "dt3155" ) != 0 ) - printk("DT3155: cleanup_module failed\n"); - - return DT_3155_FAILURE; - } - else -#endif { if ( (rcode = find_PCI()) != DT_3155_SUCCESS ) { @@ -1199,10 +1091,5 @@ void cleanup_module(void) free_irq( dt3155_status[ index ].irq, (void*)&dt3155_status[index] ); } } - -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) - if (MOD_IN_USE) - printk("DT3155: device busy, remove delayed\n"); -#endif } diff --git a/drivers/staging/dt3155/dt3155_drv.h b/drivers/staging/dt3155/dt3155_drv.h index dc110b76e463..215399a3d26a 100644 --- a/drivers/staging/dt3155/dt3155_drv.h +++ b/drivers/staging/dt3155/dt3155_drv.h @@ -33,13 +33,8 @@ extern u_char *dt3155_bbase; #ifdef __KERNEL__ #include <linux/wait.h> -#include <linux/version.h> /* need access to LINUX_VERSION_CODE */ /* wait queue for reads */ -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 3, 1) extern wait_queue_head_t dt3155_read_wait_queue[MAXBOARDS]; -#else -extern struct wait_queue *dt3155_read_wait_queue[MAXBOARDS]; -#endif #endif /* number of devices */ diff --git a/drivers/staging/dt3155/dt3155_isr.c b/drivers/staging/dt3155/dt3155_isr.c index 339aee9a0925..54460dbb867a 100644 --- a/drivers/staging/dt3155/dt3155_isr.c +++ b/drivers/staging/dt3155/dt3155_isr.c @@ -435,20 +435,11 @@ static inline void internal_release_locked_buffer( int m ) *****************************************************/ inline void dt3155_release_locked_buffer( int m ) { -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) unsigned long int flags; local_save_flags(flags); local_irq_disable(); internal_release_locked_buffer(m); local_irq_restore(flags); -#else - int flags; - - save_flags( flags ); - cli(); - internal_release_locked_buffer( m ); - restore_flags( flags ); -#endif } @@ -460,15 +451,9 @@ inline void dt3155_release_locked_buffer( int m ) inline int dt3155_flush( int m ) { int index; -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) - unsigned long int flags; - local_save_flags(flags); - local_irq_disable(); -#else - int flags; - save_flags( flags ); - cli(); -#endif + unsigned long int flags; + local_save_flags(flags); + local_irq_disable(); internal_release_locked_buffer( m ); dt3155_fbuffer[ m ]->empty_len = 0; @@ -486,11 +471,7 @@ inline int dt3155_flush( int m ) dt3155_fbuffer[ m ]->ready_head = 0; dt3155_fbuffer[ m ]->ready_len = 0; -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) local_irq_restore(flags); -#else - restore_flags( flags ); -#endif return 0; } @@ -507,15 +488,9 @@ inline int dt3155_flush( int m ) inline int dt3155_get_ready_buffer( int m ) { int frame_index; -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) - unsigned long int flags; - local_save_flags(flags); - local_irq_disable(); -#else - int flags; - save_flags( flags ); - cli(); -#endif + unsigned long int flags; + local_save_flags(flags); + local_irq_disable(); #ifdef DEBUG_QUES_A printques( m ); @@ -535,11 +510,7 @@ inline int dt3155_get_ready_buffer( int m ) printques( m ); #endif -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) local_irq_restore(flags); -#else - restore_flags( flags ); -#endif return frame_index; } diff --git a/drivers/staging/dt3155/pci-compat.h b/drivers/staging/dt3155/pci-compat.h deleted file mode 100644 index 5f47d5a94d4b..000000000000 --- a/drivers/staging/dt3155/pci-compat.h +++ /dev/null @@ -1,97 +0,0 @@ - -/* This header only makes send when included in a 2.0 compile */ - -#ifndef _PCI_COMPAT_H_ -#define _PCI_COMPAT_H_ - -#ifdef __KERNEL__ - -#include <linux/bios32.h> /* pcibios_* */ -#include <linux/pci.h> /* pcibios_* */ -#include <linux/malloc.h> /* kmalloc */ - -/* fake the new pci interface based on the old one: encapsulate bus/devfn */ -struct pci_fake_dev { - u8 bus; - u8 devfn; - int index; -}; -#define pci_dev pci_fake_dev /* the other pci_dev is unused by 2.0 drivers */ - -extern inline struct pci_dev *pci_find_device(unsigned int vendorid, - unsigned int devid, - struct pci_dev *from) -{ - struct pci_dev *pptr = kmalloc(sizeof(*pptr), GFP_KERNEL); - int index = 0; - int ret; - - if (!pptr) return NULL; - if (from) index = pptr->index + 1; - ret = pcibios_find_device(vendorid, devid, index, - &pptr->bus, &pptr->devfn); - if (ret) { kfree(pptr); return NULL; } - return pptr; -} - -extern inline struct pci_dev *pci_find_class(unsigned int class, - struct pci_dev *from) -{ - return NULL; /* FIXME */ -} - -extern inline void pci_release_device(struct pci_dev *dev) -{ - kfree(dev); -} - -/* struct pci_dev *pci_find_slot (unsigned int bus, unsigned int devfn); */ - -#define pci_present pcibios_present - -extern inline int -pci_read_config_byte(struct pci_dev *dev, u8 where, u8 *val) -{ - return pcibios_read_config_byte(dev->bus, dev->devfn, where, val); -} - -extern inline int -pci_read_config_word(struct pci_dev *dev, u8 where, u16 *val) -{ - return pcibios_read_config_word(dev->bus, dev->devfn, where, val); -} - -extern inline int -pci_read_config_dword(struct pci_dev *dev, u8 where, u32 *val) -{ - return pcibios_read_config_dword(dev->bus, dev->devfn, where, val); -} - -extern inline int -pci_write_config_byte(struct pci_dev *dev, u8 where, u8 val) -{ - return pcibios_write_config_byte(dev->bus, dev->devfn, where, val); -} - -extern inline int -pci_write_config_word(struct pci_dev *dev, u8 where, u16 val) -{ - return pcibios_write_config_word(dev->bus, dev->devfn, where, val); -} - -extern inline int -pci_write_config_dword(struct pci_dev *dev, u8 where, u32 val) -{ - return pcibios_write_config_dword(dev->bus, dev->devfn, where, val); -} - -extern inline void pci_set_master(struct pci_dev *dev) -{ - u16 cmd; - pcibios_read_config_word(dev->bus, dev->devfn, PCI_COMMAND, &cmd); - cmd |= PCI_COMMAND_MASTER; - pcibios_write_config_word(dev->bus, dev->devfn, PCI_COMMAND, cmd); -} - -#endif /* __KERNEL__ */ -#endif /* _PCI_COMPAT_H_ */ diff --git a/drivers/staging/dt3155/sysdep.h b/drivers/staging/dt3155/sysdep.h deleted file mode 100644 index 1d575d4a53ee..000000000000 --- a/drivers/staging/dt3155/sysdep.h +++ /dev/null @@ -1,820 +0,0 @@ -/* - * sysdep.h -- centralizing compatibility issues between 2.0, 2.2, 2.4 - * - * Copyright (C) 2001 Alessandro Rubini and Jonathan Corbet - * Copyright (C) 2001 O'Reilly & Associates - * - * The source code in this file can be freely used, adapted, - * and redistributed in source or binary form, so long as an - * acknowledgment appears in derived source files. The citation - * should list that the code comes from the book "Linux Device - * Drivers" by Alessandro Rubini and Jonathan Corbet, published - * by O'Reilly & Associates. No warranty is attached; - * we cannot take responsibility for errors or fitness for use. - * - * $Id: sysdep.h,v 1.2 2005/08/09 06:08:51 ssmedley Exp $ - */ - - -#ifndef _SYSDEP_H_ -#define _SYSDEP_H_ - -#ifndef LINUX_VERSION_CODE -# include <linux/version.h> -#endif - -#ifndef KERNEL_VERSION /* pre-2.1.90 didn't have it */ -# define KERNEL_VERSION(vers,rel,seq) ( ((vers)<<16) | ((rel)<<8) | (seq) ) -#endif - -/* only allow 2.0.x 2.2.y and 2.4.z */ - -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,0,0) /* not < 2.0 */ -# error "This kernel is too old: not supported by this file" -#endif -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,7,0) /* not > 2.7, by now */ -# error "This kernel is too recent: not supported by this file" -#endif -#if (LINUX_VERSION_CODE & 0xff00) == 1 /* not 2.1 */ -# error "Please don't use linux-2.1, use 2.2, 2.4 or 2.6 instead" -#endif -#if (LINUX_VERSION_CODE & 0xff00) == 3 /* not 2.3 */ -# error "Please don't use linux-2.3, use 2.4 or 2.6 instead" -#endif - -/* remember about the current version */ -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,1,0) -# define LINUX_20 -#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,3,0) -# define LINUX_22 -#else -# define LINUX_24 -#endif - -/* we can't support versioning in pre-2.4 because we #define some functions */ -#if !defined(LINUX_24) && defined(CONFIG_MODVERSIONS) -# error "This sysdep.h can't support CONFIG_MODVERSIONS" -# error "and old kernels at the same time." -# error "Either use 2.4 or avoid using versioning" -#endif - -#ifndef LINUX_20 /* include vmalloc.h if this is 2.2/2.4 */ -# ifdef VM_READ /* a typical flag defined by mm.h */ -# include <linux/vmalloc.h> -# endif -#endif - -#include <linux/sched.h> - -/* Modularization issues */ -#ifdef LINUX_20 -# define __USE_OLD_SYMTAB__ -# define EXPORT_NO_SYMBOLS register_symtab(NULL); -# define REGISTER_SYMTAB(tab) register_symtab(tab) -#else -# define REGISTER_SYMTAB(tab) /* nothing */ -#endif - -#ifdef __USE_OLD_SYMTAB__ -# define __MODULE_STRING(s) /* nothing */ -# define MODULE_PARM(v,t) /* nothing */ -# define MODULE_PARM_DESC(v,t) /* nothing */ -# define MODULE_AUTHOR(n) /* nothing */ -# define MODULE_DESCRIPTION(d) /* nothing */ -# define MODULE_SUPPORTED_DEVICE(n) /* nothing */ -#endif - -/* - * In version 2.2 (up to 2.2.19, at least), the macro for request_module() - * when no kmod is there is wrong. It's a "do {} while 0" but it shouldbe int - */ -#ifdef LINUX_22 -# ifndef CONFIG_KMOD -# undef request_module -# define request_module(name) -ENOSYS -# endif -#endif - - -#ifndef LINUX_20 -# include <linux/init.h> /* module_init/module_exit */ -#endif - -#ifndef module_init -# define module_init(x) int init_module(void) { return x(); } -# define module_exit(x) void cleanup_module(void) { x(); } -#endif - -#ifndef SET_MODULE_OWNER -# define SET_MODULE_OWNER(structure) /* nothing */ -#endif - -/* - * "select" changed in 2.1.23. The implementation is twin, but this - * header is new - * - */ -#ifdef LINUX_20 -# define __USE_OLD_SELECT__ -#else -# include <linux/poll.h> -#endif - -#ifdef LINUX_20 -# define INODE_FROM_F(filp) ((filp)->f_inode) -#else -# define INODE_FROM_F(filp) ((filp)->f_dentry->d_inode) -#endif - -/* Other changes in the fops are solved using wrappers */ - -/* - * Wait queues changed with 2.3 - */ -#ifndef DECLARE_WAIT_QUEUE_HEAD -# define DECLARE_WAIT_QUEUE_HEAD(head) struct wait_queue *head = NULL - typedef struct wait_queue *wait_queue_head_t; -# define init_waitqueue_head(head) (*(head)) = NULL - -/* offer wake_up_sync as an alias for wake_up */ -# define wake_up_sync(head) wake_up(head) -# define wake_up_interruptible_sync(head) wake_up_interruptible(head) - -/* Pretend we have add_wait_queue_exclusive */ -# define add_wait_queue_exclusive(q,entry) add_wait_queue ((q), (entry)) - -#endif /* no DECLARE_WAIT_QUEUE_HEAD */ - -/* - * Define wait_event for 2.0 kernels. (This ripped off directly from - * the 2.2.18 sched.h) - */ -#ifdef LINUX_20 - -#define __wait_event(wq, condition) \ -do { \ - struct wait_queue __wait; \ - \ - __wait.task = current; \ - add_wait_queue(&wq, &__wait); \ - for (;;) { \ - current->state = TASK_UNINTERRUPTIBLE; \ - mb(); \ - if (condition) \ - break; \ - schedule(); \ - } \ - current->state = TASK_RUNNING; \ - remove_wait_queue(&wq, &__wait); \ -} while (0) - -#define wait_event(wq, condition) \ -do { \ - if (condition) \ - break; \ - __wait_event(wq, condition); \ -} while (0) - -#define __wait_event_interruptible(wq, condition, ret) \ -do { \ - struct wait_queue __wait; \ - \ - __wait.task = current; \ - add_wait_queue(&wq, &__wait); \ - for (;;) { \ - current->state = TASK_INTERRUPTIBLE; \ - mb(); \ - if (condition) \ - break; \ - if (!signal_pending(current)) { \ - schedule(); \ - continue; \ - } \ - ret = -ERESTARTSYS; \ - break; \ - } \ - current->state = TASK_RUNNING; \ - remove_wait_queue(&wq, &__wait); \ -} while (0) - -#define wait_event_interruptible(wq, condition) \ -({ \ - int __ret = 0; \ - if (!(condition)) \ - __wait_event_interruptible(wq, condition, __ret); \ - __ret; \ -}) -#endif - - -/* - * 2.3 added tasklets - */ -#ifdef LINUX_24 -# define HAVE_TASKLETS -#endif - - - - -/* FIXME: implement the other versions of wake_up etc */ - - -/* - * access to user space: use the 2.2 functions, - * and implement them as macros for 2.0 - */ - -#ifdef LINUX_20 -# include <asm/segment.h> -# define access_ok(t,a,sz) (verify_area((t),(void *) (a),(sz)) ? 0 : 1) -# define verify_area_20 verify_area -# define copy_to_user(t,f,n) (memcpy_tofs((t), (f), (n)), 0) -# define copy_from_user(t,f,n) (memcpy_fromfs((t), (f), (n)), 0) -# define __copy_to_user(t,f,n) copy_to_user((t), (f), (n)) -# define __copy_from_user(t,f,n) copy_from_user((t), (f), (n)) - -# define PUT_USER(val,add) (put_user((val),(add)), 0) -# define __PUT_USER(val,add) PUT_USER((val),(add)) - -# define GET_USER(dest,add) ((dest)=get_user((add)), 0) -# define __GET_USER(dest,add) GET_USER((dest),(add)) -#else -# include <asm/uaccess.h> -# include <asm/io.h> -# define verify_area_20(t,a,sz) (0) /* == success */ -# define PUT_USER put_user -# define __PUT_USER __put_user -# define GET_USER get_user -# define __GET_USER __get_user -#endif - -/* - * Allocation issues - */ -#ifdef GFP_USER /* only if mm.h has been included */ -# ifdef LINUX_20 -# define __GFP_DMA GFP_DMA /* 2.0 didn't have the leading __ */ -# endif -# ifndef LINUX_24 -# define __GFP_HIGHMEM 0 /* was not there */ -# define GFP_HIGHUSER 0 /* idem */ -# endif - -# ifdef LINUX_20 -# define __get_free_pages(a,b) __get_free_pages((a),(b),0) -# endif -# ifndef LINUX_24 -# define get_zeroed_page get_free_page -# endif -#endif - -/* ioremap */ -#if defined(LINUX_20) && defined(_LINUX_MM_H) -# define ioremap_nocache ioremap -# ifndef __i386__ - /* This simple approach works for non-PC platforms. */ -# define ioremap vremap -# define iounmap vfree -# else /* the PC has <expletive> ISA; 2.2 and 2.4 remap it, 2.0 needs not */ -extern inline void *ioremap(unsigned long phys_addr, unsigned long size) -{ - if (phys_addr >= 0xA0000 && phys_addr + size <= 0x100000) - return (void *)phys_addr; - return vremap(phys_addr, size); -} - -extern inline void iounmap(void *addr) -{ - if ((unsigned long)addr >= 0xA0000 - && (unsigned long)addr < 0x100000) - return; - vfree(addr); -} -# endif -#endif - -/* Also, define check_mem_region etc */ -#ifndef LINUX_24 -# define check_mem_region(a,b) 0 /* success */ -# define request_mem_region(a,b,c) /* nothing */ -# define release_mem_region(a,b) /* nothing */ -#endif - -/* implement capable() for 2.0 */ -#ifdef LINUX_20 -# define capable(anything) suser() -#endif - -/* The use_count of exec_domain and binfmt changed in 2.1.23 */ - -#ifdef LINUX_20 -# define INCRCOUNT(p) ((p)->module ? __MOD_INC_USE_COUNT((p)->module) : 0) -# define DECRCOUNT(p) ((p)->module ? __MOD_DEC_USE_COUNT((p)->module) : 0) -# define CURRCOUNT(p) ((p)->module && (p)->module->usecount) -#else -# define INCRCOUNT(p) ((p)->use_count++) -# define DECRCOUNT(p) ((p)->use_count--) -# define CURRCOUNT(p) ((p)->use_count) -#endif - -/* - * /proc has changed a lot across the versions... - */ -#ifdef LINUX_20 -# define USE_PROC_REGISTER -#endif - - -/* - * 2.2 didn't have create_proc_{read|info}_entry yet. - * And it looks like there are no other "interesting" entry point, as - * the rest is somehow esotique (mknod, symlink, ...) - */ -#ifdef LINUX_22 -# ifdef PROC_SUPER_MAGIC /* Only if procfs is being used */ -extern inline struct proc_dir_entry *create_proc_read_entry(const char *name, - mode_t mode, struct proc_dir_entry *base, - read_proc_t *read_proc, void * data) -{ - struct proc_dir_entry *res=create_proc_entry(name,mode,base); - if (res) { - res->read_proc=read_proc; - res->data=data; - } - return res; -} - -# ifndef create_proc_info_entry /* added in 2.2.18 */ -typedef int (get_info_t)(char *, char **, off_t, int, int); -extern inline struct proc_dir_entry *create_proc_info_entry(const char *name, - mode_t mode, struct proc_dir_entry *base, get_info_t *get_info) -{ - struct proc_dir_entry *res=create_proc_entry(name,mode,base); - if (res) res->get_info=get_info; - return res; -} -# endif /* no create_proc_info_entry */ -# endif -#endif - -#ifdef LINUX_20 -# define test_and_set_bit(nr,addr) test_bit((nr),(addr)) -# define test_and_clear_bit(nr,addr) clear_bit((nr),(addr)) -# define test_and_change_bit(nr,addr) change_bit((nr),(addr)) -#endif - - -/* 2.0 had no read and write memory barriers, and 2.2 lacks the - set_ functions */ -#ifndef LINUX_24 -# ifdef LINUX_20 -# define wmb() mb() /* this is a big penalty on non-reordering platfs */ -# define rmb() mb() /* this is a big penalty on non-reordering platfs */ -# endif /* LINUX_20 */ - -#define set_mb() do { var = value; mb(); } while (0) -#define set_wmb() do { var = value; wmb(); } while (0) -#endif /* ! LINUX_24 */ - - - -/* 2.1.30 removed these functions. Let's define them, just in case */ -#ifndef LINUX_20 -# define queue_task_irq queue_task -# define queue_task_irq_off queue_task -#endif - -/* 2.1.10 and 2.1.43 introduced new functions. They are worth using */ - -#ifdef LINUX_20 - -# include <asm/byteorder.h> -# ifdef __LITTLE_ENDIAN -# define cpu_to_le16(x) (x) -# define cpu_to_le32(x) (x) -# define cpu_to_be16(x) htons((x)) -# define cpu_to_be32(x) htonl((x)) -# else -# define cpu_to_be16(x) (x) -# define cpu_to_be32(x) (x) - extern inline __u16 cpu_to_le16(__u16 x) { return (x<<8) | (x>>8);} - extern inline __u32 cpu_to_le32(__u32 x) { return (x>>24) | - ((x>>8)&0xff00) | ((x<<8)&0xff0000) | (x<<24);} -# endif - -# define le16_to_cpu(x) cpu_to_le16(x) -# define le32_to_cpu(x) cpu_to_le32(x) -# define be16_to_cpu(x) cpu_to_be16(x) -# define be32_to_cpu(x) cpu_to_be32(x) - -# define cpu_to_le16p(addr) (cpu_to_le16(*(addr))) -# define cpu_to_le32p(addr) (cpu_to_le32(*(addr))) -# define cpu_to_be16p(addr) (cpu_to_be16(*(addr))) -# define cpu_to_be32p(addr) (cpu_to_be32(*(addr))) - - extern inline void cpu_to_le16s(__u16 *a) {*a = cpu_to_le16(*a);} - extern inline void cpu_to_le32s(__u16 *a) {*a = cpu_to_le32(*a);} - extern inline void cpu_to_be16s(__u16 *a) {*a = cpu_to_be16(*a);} - extern inline void cpu_to_be32s(__u16 *a) {*a = cpu_to_be32(*a);} - -# define le16_to_cpup(x) cpu_to_le16p(x) -# define le32_to_cpup(x) cpu_to_le32p(x) -# define be16_to_cpup(x) cpu_to_be16p(x) -# define be32_to_cpup(x) cpu_to_be32p(x) - -# define le16_to_cpus(x) cpu_to_le16s(x) -# define le32_to_cpus(x) cpu_to_le32s(x) -# define be16_to_cpus(x) cpu_to_be16s(x) -# define be32_to_cpus(x) cpu_to_be32s(x) - -#endif - -#ifdef LINUX_20 -# define __USE_OLD_REBUILD_HEADER__ -#endif - -/* - * 2.0 didn't include sema_init, so we make our own - but only if it - * looks like semaphore.h got included. - */ -#ifdef LINUX_20 -# ifdef MUTEX_LOCKED /* Only if semaphore.h included */ - extern inline void sema_init (struct semaphore *sem, int val) - { - sem->count = val; - sem->waking = sem->lock = 0; - sem->wait = NULL; - } -# endif -#endif /* LINUX_20 */ - -/* - * In 2.0, there is no real need for spinlocks, and they weren't really - * implemented anyway. - * - * XXX the _irqsave variant should be defined eventually to do the - * right thing. - */ -#ifdef LINUX_20 -typedef int spinlock_t; -# define spin_lock(lock) -# define spin_unlock(lock) -# define spin_lock_init(lock) - -# define spin_lock_irqsave(lock,flags) do { \ - save_flags(flags); cli(); } while (0); -# define spin_unlock_irqrestore(lock,flags) restore_flags(flags); -#endif - -/* - * 2.1 stuffed the "flush" method into the middle of the file_operations - * structure. The FOP_NO_FLUSH symbol is for drivers that do not implement - * flush (most of them), it can be inserted in initializers for all 2.x - * kernel versions. - */ -#ifdef LINUX_20 -# define FOP_NO_FLUSH /* nothing */ -# define TAG_LLSEEK lseek -# define TAG_POLL select -#else -# define FOP_NO_FLUSH NULL, -# define TAG_LLSEEK llseek -# define TAG_POLL poll -#endif - - - -/* - * fasync changed in 2.2. - */ -#ifdef LINUX_20 -/* typedef struct inode *fasync_file; */ -# define fasync_file struct inode * -#else - typedef int fasync_file; -#endif - -/* kill_fasync had less arguments, and a different indirection in the first */ -#ifndef LINUX_24 -# define kill_fasync(ptrptr,sig,band) kill_fasync(*(ptrptr),(sig)) -#endif - -/* other things that are virtualized: define the new functions for the old k */ -#ifdef LINUX_20 -# define in_interrupt() (intr_count!=0) -# define mdelay(x) udelay((x)*1000) -# define signal_pending(current) ((current)->signal & ~(current)->blocked) -#endif - -#ifdef LINUX_PCI_H /* only if PCI stuff is being used */ -# ifdef LINUX_20 -# include "pci-compat.h" /* a whole set of replacement functions */ -# else -# define pci_release_device(d) /* placeholder, used in 2.0 to free stuff */ -# endif -#endif - - - -/* - * Some task state stuff - */ - -#ifndef set_current_state -# define set_current_state(s) current->state = (s); -#endif - -#ifdef LINUX_20 -extern inline void schedule_timeout(int timeout) -{ - current->timeout = jiffies + timeout; - current->state = TASK_INTERRUPTIBLE; - schedule(); - current->timeout = 0; -} - -extern inline long sleep_on_timeout(wait_queue_head_t *q, signed long timeout) -{ - signed long early = 0; - - current->timeout = jiffies + timeout; - sleep_on (q); - if (current->timeout > 0) { - early = current->timeout - jiffies; - current->timeout = 0; - } - return early; -} - - -extern inline long interruptible_sleep_on_timeout(wait_queue_head_t *q, - signed long timeout) -{ - signed long early = 0; - - current->timeout = jiffies + timeout; - interruptible_sleep_on (q); - if (current->timeout > 0) { - early = current->timeout - jiffies; - current->timeout = 0; - } - return early; -} - -#endif /* LINUX_20 */ - -/* - * Schedule_task was a late 2.4 addition. - */ -#ifndef LINUX_24 -extern inline int schedule_task(struct tq_struct *task) -{ - queue_task(task, &tq_scheduler); - return 1; -} -#endif - - -/* - * Timing issues - */ -#ifdef LINUX_20 -# define get_fast_time do_gettimeofday -#endif - -#ifdef _LINUX_DELAY_H /* only if linux/delay.h is included */ -# ifndef mdelay /* linux-2.0 */ -# ifndef MAX_UDELAY_MS -# define MAX_UDELAY_MS 5 -# endif -# define mdelay(n) (\ - (__builtin_constant_p(n) && (n)<=MAX_UDELAY_MS) ? udelay((n)*1000) : \ - ({unsigned long msec=(n); while (msec--) udelay(1000);})) -# endif /* mdelay */ -#endif /* _LINUX_DELAY_H */ - - -/* - * No del_timer_sync before 2.4 - */ -#ifndef LINUX_24 -# define del_timer_sync(timer) del_timer(timer) /* and hope */ -#endif - -/* - * mod_timer wasn't present in 2.0 - */ -#ifdef LINUX_20 -static inline int mod_timer(struct timer_list *timer, unsigned long expires) -{ - int pending = del_timer(timer); - if (pending) { - timer->expires = expires; - add_timer(timer); - } - return pending; -} -#endif -/* - * Various changes in mmap and friends. - */ - -#ifndef NOPAGE_SIGBUS -# define NOPAGE_SIGBUS NULL /* return value of the nopage memory method */ -# define NOPAGE_OOM NULL /* No real equivalent in older kernels */ -#endif - -#ifndef VM_RESERVED /* Added 2.4.0-test10 */ -# define VM_RESERVED 0 -#endif - -#ifdef LINUX_24 /* use "vm_pgoff" to get an offset */ -#define VMA_OFFSET(vma) ((vma)->vm_pgoff << PAGE_SHIFT) -#else /* use "vm_offset" */ -#define VMA_OFFSET(vma) ((vma)->vm_offset) -#endif - -#ifdef MAP_NR -#define virt_to_page(page) (mem_map + MAP_NR(page)) -#endif - -#ifndef get_page -# define get_page(p) atomic_inc(&(p)->count) -#endif - -/* - * No DMA lock in 2.0. - */ -#ifdef LINUX_20 -static inline unsigned long claim_dma_lock(void) -{ - unsigned long flags; - save_flags(flags); - cli(); - return flags; -} - -static inline void release_dma_lock(unsigned long flags) -{ - restore_flags(flags); -} -#endif - - -/* - * I/O memory was not managed by ealier kernels, define them as success - */ - -#if 0 /* FIXME: what is the right way to do request_mem_region? */ -#ifndef LINUX_24 -# define check_mem_region(start, len) 0 -# define request_mem_region(start, len, name) 0 -# define release_mem_region(start, len) 0 - - /* - * Also, request_ and release_ region used to return void. Return 0 instead - */ -# define request_region(s, l, n) ({request_region((s),(l),(n));0;}) -# define release_region(s, l) ({release_region((s),(l));0;}) - -#endif /* not LINUX_24 */ -#endif - -/* - * Block layer stuff. - */ -#ifndef LINUX_24 - -/* BLK_DEFAULT_QUEUE for use with these macros only!!!! */ -#define BLK_DEFAULT_QUEUE(major) blk_dev[(major)].request_fn -#define blk_init_queue(where,request_fn) where = request_fn; -#define blk_cleanup_queue(where) where = NULL; - -/* No QUEUE_EMPTY in older kernels */ -#ifndef QUEUE_EMPTY /* Driver can redefine it too */ -# define QUEUE_EMPTY (CURRENT != NULL) -#endif - -#ifdef RO_IOCTLS -static inline int blk_ioctl(kdev_t dev, unsigned int cmd, unsigned long arg) -{ - int err; - - switch (cmd) { - case BLKRAGET: /* return the readahead value */ - if (!arg) return -EINVAL; - err = ! access_ok(VERIFY_WRITE, arg, sizeof(long)); - if (err) return -EFAULT; - PUT_USER(read_ahead[MAJOR(dev)],(long *) arg); - return 0; - - case BLKRASET: /* set the readahead value */ - if (!capable(CAP_SYS_ADMIN)) return -EACCES; - if (arg > 0xff) return -EINVAL; /* limit it */ - read_ahead[MAJOR(dev)] = arg; - return 0; - - case BLKFLSBUF: /* flush */ - if (! capable(CAP_SYS_ADMIN)) return -EACCES; /* only root */ - fsync_dev(dev); - invalidate_buffers(dev); - return 0; - - RO_IOCTLS(dev, arg); - } - return -ENOTTY; -} -#endif /* RO_IOCTLS */ - -#ifdef LINUX_EXTENDED_PARTITION /* defined in genhd.h */ -static inline void register_disk(struct gendisk *gdev, kdev_t dev, - unsigned minors, struct file_operations *ops, long size) -{ - if (! gdev) - return; - resetup_one_dev(gdev, MINOR(dev) >> gdev->minor_shift); -} -#endif /* LINUX_EXTENDED_PARTITION */ - - -#else /* it is Linux 2.4 */ -#define HAVE_BLKPG_H -#endif /* LINUX_24 */ - - - -#ifdef LINUX_20 /* physical and virtual addresses had the same value */ -# define __pa(a) (a) -# define __va(a) (a) -#endif - -/* - * Network driver compatibility - */ - -/* - * 2.0 dev_kfree_skb had an extra arg. The following is a little dangerous - * in that it assumes that FREE_WRITE is always wanted. Very few 2.0 drivers - * use FREE_READ, but the number is *not* zero... - * - * Also: implement the non-checking versions of a couple skb functions - - * but they still check in 2.0. - */ -#ifdef LINUX_20 -# define dev_kfree_skb(skb) dev_kfree_skb((skb), FREE_WRITE); - -# define __skb_push(skb, len) skb_push((skb), (len)) -# define __skb_put(skb, len) skb_put((skb), (len)) -#endif - -/* - * Softnet changes in 2.4 - */ -#ifndef LINUX_24 -# ifdef _LINUX_NETDEVICE_H /* only if netdevice.h was included */ -# define netif_start_queue(dev) clear_bit(0, (void *) &(dev)->tbusy); -# define netif_stop_queue(dev) set_bit(0, (void *) &(dev)->tbusy); - -static inline void netif_wake_queue(struct device *dev) -{ - clear_bit(0, (void *) &(dev)->tbusy); - mark_bh(NET_BH); -} - -/* struct device became struct net_device */ -# define net_device device -# endif /* netdevice.h */ -#endif /* ! LINUX_24 */ - -/* - * Memory barrier stuff, define what's missing from older kernel versions - */ -#ifdef switch_to /* this is always a macro, defined in <asm/sysstem.h> */ - -# ifndef set_mb -# define set_mb(var, value) do {(var) = (value); mb();} while 0 -# endif -# ifndef set_rmb -# define set_rmb(var, value) do {(var) = (value); rmb();} while 0 -# endif -# ifndef set_wmb -# define set_wmb(var, value) do {(var) = (value); wmb();} while 0 -# endif - -/* The hw barriers are defined as sw barriers. A correct thing if this - specific kernel/platform is supported but has no specific instruction */ -# ifndef mb -# define mb barrier -# endif -# ifndef rmb -# define rmb barrier -# endif -# ifndef wmb -# define wmb barrier -# endif - -#endif /* switch to (i.e. <asm/system.h>) */ - - -#endif /* _SYSDEP_H_ */ |