1 #ifndef COMPAT_INCLUDE_XEN_PLATFORM_COMPAT_H 2 #define COMPAT_INCLUDE_XEN_PLATFORM_COMPAT_H 3 4 #include <linux/version.h> 5 #include <linux/spinlock.h> 6 #include <asm/maddr.h> 7 8 #if defined(__LINUX_COMPILER_H) && !defined(__always_inline) 9 #define __always_inline inline 10 #endif 11 12 #if defined(__LINUX_SPINLOCK_H) && !defined(DEFINE_SPINLOCK) 13 #define DEFINE_SPINLOCK(x) spinlock_t x = SPIN_LOCK_UNLOCKED 14 #endif 15 16 #ifdef _LINUX_INIT_H 17 18 #ifndef __init 19 #define __init 20 #endif 21 22 #ifndef __devinit 23 #define __devinit 24 #define __devinitdata 25 #endif 26 27 #endif /* _LINUX_INIT_H */ 28 29 #if defined(__LINUX_CACHE_H) && !defined(__read_mostly) 30 #define __read_mostly 31 #endif 32 33 #if defined(_LINUX_SKBUFF_H) && !defined(NET_IP_ALIGN) 34 #define NET_IP_ALIGN 0 35 #endif 36 37 #if defined(_LINUX_SKBUFF_H) && !defined(CHECKSUM_HW) 38 #define CHECKSUM_HW CHECKSUM_PARTIAL 39 #endif 40 41 #if defined(_LINUX_ERR_H) && !defined(IS_ERR_VALUE) 42 #define IS_ERR_VALUE(x) unlikely((x) > (unsigned long)-1000L) 43 #endif 44 45 #if defined(_ASM_IA64_PGTABLE_H) && !defined(_PGTABLE_NOPUD_H) 46 #include <asm-generic/pgtable-nopud.h> 47 #endif 48 49 /* Some kernels have this typedef backported so we cannot reliably 50 * detect based on version number, hence we forcibly #define it. 51 */ 52 #if defined(__LINUX_TYPES_H) || defined(__LINUX_GFP_H) || defined(_LINUX_KERNEL_H) 53 #define gfp_t unsigned 54 #endif 55 56 #if defined(_LINUX_NOTIFIER_H) && !defined(ATOMIC_NOTIFIER_HEAD) 57 #define ATOMIC_NOTIFIER_HEAD(name) struct notifier_block *name 58 #define atomic_notifier_chain_register(chain,nb) notifier_chain_register(chain,nb) 59 #define atomic_notifier_chain_unregister(chain,nb) notifier_chain_unregister(chain,nb) 60 #define atomic_notifier_call_chain(chain,val,v) notifier_call_chain(chain,val,v) 61 #endif 62 63 #if defined(_LINUX_NOTIFIER_H) && !defined(BLOCKING_NOTIFIER_HEAD) 64 #define BLOCKING_NOTIFIER_HEAD(name) struct notifier_block *name 65 #define blocking_notifier_chain_register(chain,nb) notifier_chain_register(chain,nb) 66 #define blocking_notifier_chain_unregister(chain,nb) notifier_chain_unregister(chain,nb) 67 #define blocking_notifier_call_chain(chain,val,v) notifier_call_chain(chain,val,v) 68 #endif 69 70 #if defined(_LINUX_MM_H) && defined set_page_count 71 #define init_page_count(page) set_page_count(page, 1) 72 #endif 73 74 #if defined(__LINUX_GFP_H) && !defined __GFP_NOMEMALLOC 75 #define __GFP_NOMEMALLOC 0 76 #endif 77 78 #if defined(_LINUX_FS_H) && LINUX_VERSION_CODE < KERNEL_VERSION(2,6,9) 79 #define nonseekable_open(inode, filp) /* Nothing to do */ 80 #endif 81 82 #if defined(_LINUX_MM_H) && LINUX_VERSION_CODE < KERNEL_VERSION(2,6,10) 83 unsigned long vmalloc_to_pfn(void *addr); 84 #endif 85 86 #if defined(__LINUX_COMPLETION_H) && LINUX_VERSION_CODE < KERNEL_VERSION(2,6,11) 87 unsigned long wait_for_completion_timeout(struct completion *x, unsigned long timeout); 88 #endif 89 90 #if defined(_LINUX_SCHED_H) && LINUX_VERSION_CODE < KERNEL_VERSION(2,6,14) 91 signed long schedule_timeout_interruptible(signed long timeout); 92 #endif 93 94 #if defined(_LINUX_SLAB_H) && LINUX_VERSION_CODE < KERNEL_VERSION(2,6,14) 95 void *kzalloc(size_t size, int flags); 96 #endif 97 98 #if defined(_LINUX_BLKDEV_H) && LINUX_VERSION_CODE < KERNEL_VERSION(2,6,16) 99 #define end_that_request_last(req, uptodate) end_that_request_last(req) 100 #endif 101 102 #if defined(_LINUX_CAPABILITY_H) && LINUX_VERSION_CODE < KERNEL_VERSION(2,6,16) 103 #define capable(cap) (1) 104 #endif 105 106 #if defined(_LINUX_KERNEL_H) && LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18) 107 extern char *kasprintf(gfp_t gfp, const char *fmt, ...) 108 __attribute__ ((format (printf, 2, 3))); 109 #endif 110 111 #if defined(_LINUX_SYSRQ_H) && LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18) 112 #define handle_sysrq(x,y,z) handle_sysrq(x,y) 113 #endif 114 115 #if defined(_PAGE_PRESENT) && !defined(_PAGE_NX) 116 #define _PAGE_NX 0 117 /* 118 * This variable at present is referenced by netfront, but only in code that 119 * is dead when running in hvm guests. To detect potential active uses of it 120 * in the future, don't try to supply a 'valid' value here, so that any 121 * mappings created with it will fault when accessed. 122 */ 123 #define __supported_pte_mask ((maddr_t)0) 124 #endif 125 126 /* This code duplication is not ideal, but || does not seem to properly 127 * short circuit in a #if condition. 128 **/ 129 #if defined(_LINUX_NETDEVICE_H) && LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18) 130 #if !defined(SLE_VERSION) 131 #define netif_tx_lock_bh(dev) spin_lock_bh(&(dev)->xmit_lock) 132 #define netif_tx_unlock_bh(dev) spin_unlock_bh(&(dev)->xmit_lock) 133 #elif SLE_VERSION_CODE < SLE_VERSION(10,1,0) 134 #define netif_tx_lock_bh(dev) spin_lock_bh(&(dev)->xmit_lock) 135 #define netif_tx_unlock_bh(dev) spin_unlock_bh(&(dev)->xmit_lock) 136 #endif 137 #endif 138 139 #if defined(__LINUX_SEQLOCK_H) && !defined(DEFINE_SEQLOCK) 140 #define DEFINE_SEQLOCK(x) seqlock_t x = SEQLOCK_UNLOCKED 141 #endif 142 143 /* Bug in RHEL4-U3: rw_lock_t is mistakenly defined in DEFINE_RWLOCK() macro */ 144 #if defined(__LINUX_SPINLOCK_H) && defined(DEFINE_RWLOCK) 145 #define rw_lock_t rwlock_t 146 #endif 147 148 #if defined(__LINUX_SPINLOCK_H) && !defined(DEFINE_RWLOCK) 149 #define DEFINE_RWLOCK(x) rwlock_t x = RW_LOCK_UNLOCKED 150 #endif 151 152 #if defined(_LINUX_INTERRUPT_H) && LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19) 153 /** 154 * RHEL4-U5 pulled back this feature into the older kernel 155 * Since it is a typedef, and not a macro - detect this kernel via 156 * RHEL_VERSION 157 */ 158 #if !defined(RHEL_VERSION) || (RHEL_VERSION == 4 && RHEL_UPDATE < 5) 159 #if !defined(RHEL_MAJOR) || (RHEL_MAJOR == 4 && RHEL_MINOR < 5) 160 typedef irqreturn_t (*irq_handler_t)(int, void *, struct pt_regs *); 161 #endif 162 #endif 163 #endif 164 165 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,23) 166 #define setup_xen_features xen_setup_features 167 #endif 168 169 #ifndef atomic_cmpxchg 170 #define atomic_cmpxchg(v, old, new) (cmpxchg(&((v)->counter), (old), (new))) 171 #endif 172 173 #ifdef sync_test_bit 174 #define synch_change_bit sync_change_bit 175 #define synch_clear_bit sync_clear_bit 176 #define synch_set_bit sync_set_bit 177 #define synch_test_and_change_bit sync_test_and_change_bit 178 #define synch_test_and_clear_bit sync_test_and_clear_bit 179 #define synch_test_and_set_bit sync_test_and_set_bit 180 #define synch_test_bit sync_test_bit 181 #endif 182 183 #endif 184