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1.1 root 1: #ifndef _KERN_COMPAT_H
2: #define _KERN_COMPAT_H
3: /* kern_compat.h: Linux PCI network adapter backward compatibility code. */
4: /*
5: $Revision: 1.1.2.2 $ $Date: 2007/08/04 21:02:21 $
6:
7: Kernel compatibility defines.
8: This file provides macros to mask the difference between kernel versions.
9: It is designed primarily to allow device drivers to be written so that
10: they work with a range of kernel versions.
11:
12: Written 1999-2003 Donald Becker, Scyld Computing Corporation
13: This software may be used and distributed according to the terms
14: of the GNU General Public License (GPL), incorporated herein by
15: reference. Drivers interacting with these functions are derivative
16: works and thus are covered the GPL. They must include an explicit
17: GPL notice.
18:
19: This code also provides inline scan and activate functions for PCI network
20: interfaces. It has an interface identical to pci-scan.c, but is
21: intended as an include file to simplify using updated drivers with older
22: kernel versions.
23: This code version matches pci-scan.c:v0.05 9/16/99
24:
25: The author may be reached as [email protected], or
26: Donald Becker
27: Penguin Computing Corporation
28: 914 Bay Ridge Road, Suite 220
29: Annapolis MD 21403
30:
31: Other contributers:
32: <none>
33: */
34:
35: /* We try to use defined values to decide when an interface has changed or
36: added features, but we must have the kernel version number for a few. */
37: #if ! defined(LINUX_VERSION_CODE) || (LINUX_VERSION_CODE < 0x10000)
38: #include <linux/version.h>
39: #endif
40: /* Older kernel versions didn't include modversions automatically. */
41: #if LINUX_VERSION_CODE < 0x20300 && defined(MODVERSIONS)
42: #include <linux/modversions.h>
43: #endif
44:
45: /* There was no support for PCI address space mapping in 2.0, but the
46: Alpha needed it. See the 2.2 documentation. */
47: #if LINUX_VERSION_CODE < 0x20100 && ! defined(__alpha__)
48: #define ioremap(a,b)\
49: (((unsigned long)(a) >= 0x100000) ? vremap(a,b) : (void*)(a))
50: #define iounmap(v)\
51: do { if ((unsigned long)(v) >= 0x100000) vfree(v);} while (0)
52: #endif
53:
54: /* Support for adding info about the purpose of and parameters for kernel
55: modules was added in 2.1. */
56: #if LINUX_VERSION_CODE < 0x20115
57: #define MODULE_AUTHOR(name) extern int nonesuch
58: #define MODULE_DESCRIPTION(string) extern int nonesuch
59: #define MODULE_PARM(varname, typestring) extern int nonesuch
60: #define MODULE_PARM_DESC(var,desc) extern int nonesuch
61: #endif
62: #if !defined(MODULE_LICENSE)
63: #define MODULE_LICENSE(license) \
64: static const char __module_license[] __attribute__((section(".modinfo"))) = \
65: "license=" license
66: #endif
67: #if !defined(MODULE_PARM_DESC)
68: #define MODULE_PARM_DESC(var,desc) \
69: const char __module_parm_desc_##var[] \
70: __attribute__((section(".modinfo"))) = \
71: "parm_desc_" __MODULE_STRING(var) "=" desc
72: #endif
73:
74: /* SMP and better multiarchitecture support were added.
75: Using an older kernel means we assume a little-endian uniprocessor.
76: */
77: #if LINUX_VERSION_CODE < 0x20123
78: #define hard_smp_processor_id() smp_processor_id()
79: //#define test_and_set_bit(val, addr) set_bit(val, addr)
80: #define cpu_to_le16(val) (val)
81: #define cpu_to_le32(val) (val)
82: #define le16_to_cpu(val) (val)
83: #define le16_to_cpus(val) /* In-place conversion. */
84: #define le32_to_cpu(val) (val)
85: #define cpu_to_be16(val) ((((val) & 0xff) << 8) + (((val) >> 8) & 0xff))
86: #define cpu_to_be32(val) ((cpu_to_be16(val) << 16) + cpu_to_be16((val) >> 16))
87: typedef long spinlock_t;
88: #define SPIN_LOCK_UNLOCKED 0
89: #define spin_lock(lock)
90: #define spin_unlock(lock)
91: #define spin_lock_irqsave(lock, flags) do {save_flags(flags); cli();} while(0)
92: #define spin_unlock_irqrestore(lock, flags) restore_flags(flags)
93: #endif
94:
95: #if LINUX_VERSION_CODE <= 0x20139
96: #define net_device_stats enet_statistics
97: #else
98: #define NETSTATS_VER2
99: #endif
100:
101: /* These are used by the netdrivers to report values from the
102: MII (Media Indpendent Interface) management registers.
103: */
104: #ifndef SIOCGMIIPHY
105: #define SIOCGMIIPHY (SIOCDEVPRIVATE) /* Get the PHY in use. */
106: #define SIOCGMIIREG (SIOCDEVPRIVATE+1) /* Read a PHY register. */
107: #define SIOCSMIIREG (SIOCDEVPRIVATE+2) /* Write a PHY register. */
108: #endif
109: #ifndef SIOCGPARAMS
110: #define SIOCGPARAMS (SIOCDEVPRIVATE+3) /* Read operational parameters. */
111: #define SIOCSPARAMS (SIOCDEVPRIVATE+4) /* Set operational parameters. */
112: #endif
113:
114: #if !defined(HAVE_NETIF_MSG)
115: enum {
116: NETIF_MSG_DRV = 0x0001,
117: NETIF_MSG_PROBE = 0x0002,
118: NETIF_MSG_LINK = 0x0004,
119: NETIF_MSG_TIMER = 0x0008,
120: NETIF_MSG_IFDOWN = 0x0010,
121: NETIF_MSG_IFUP = 0x0020,
122: NETIF_MSG_RX_ERR = 0x0040,
123: NETIF_MSG_TX_ERR = 0x0080,
124: NETIF_MSG_TX_QUEUED = 0x0100,
125: NETIF_MSG_INTR = 0x0200,
126: NETIF_MSG_TX_DONE = 0x0400,
127: NETIF_MSG_RX_STATUS = 0x0800,
128: NETIF_MSG_PKTDATA = 0x1000,
129: /* 2000 is reserved. */
130: NETIF_MSG_WOL = 0x4000,
131: NETIF_MSG_MISC = 0x8000,
132: NETIF_MSG_RXFILTER = 0x10000,
133: };
134: #define NETIF_MSG_MAX 0x10000
135: #endif
136:
137: #if !defined(NETIF_MSG_MAX) || NETIF_MSG_MAX < 0x8000
138: #define NETIF_MSG_MISC 0x8000
139: #endif
140: #if !defined(NETIF_MSG_MAX) || NETIF_MSG_MAX < 0x10000
141: #define NETIF_MSG_RXFILTER 0x10000
142: #endif
143:
144: #if LINUX_VERSION_CODE < 0x20155
145: #include <linux/bios32.h>
146: #define PCI_SUPPORT_VER1
147: /* A minimal version of the 2.2.* PCI support that handles configuration
148: space access.
149: Drivers that actually use pci_dev fields must do explicit compatibility.
150: Note that the struct pci_dev * "pointer" is actually a byte mapped integer!
151: */
152: #if LINUX_VERSION_CODE < 0x20014
153: struct pci_dev { int not_used; };
154: #endif
155:
156: #define pci_find_slot(bus, devfn) (struct pci_dev*)((bus<<8) | devfn | 0xf0000)
157: #define bus_number(pci_dev) ((((int)(pci_dev))>>8) & 0xff)
158: #define devfn_number(pci_dev) (((int)(pci_dev)) & 0xff)
159: #define pci_bus_number(pci_dev) ((((int)(pci_dev))>>8) & 0xff)
160: #define pci_devfn(pci_dev) (((int)(pci_dev)) & 0xff)
161:
162: #ifndef CONFIG_PCI
163: extern inline int pci_present(void) { return 0; }
164: #else
165: #define pci_present pcibios_present
166: #endif
167:
168: #define pci_read_config_byte(pdev, where, valp)\
169: pcibios_read_config_byte(bus_number(pdev), devfn_number(pdev), where, valp)
170: #define pci_read_config_word(pdev, where, valp)\
171: pcibios_read_config_word(bus_number(pdev), devfn_number(pdev), where, valp)
172: #define pci_read_config_dword(pdev, where, valp)\
173: pcibios_read_config_dword(bus_number(pdev), devfn_number(pdev), where, valp)
174: #define pci_write_config_byte(pdev, where, val)\
175: pcibios_write_config_byte(bus_number(pdev), devfn_number(pdev), where, val)
176: #define pci_write_config_word(pdev, where, val)\
177: pcibios_write_config_word(bus_number(pdev), devfn_number(pdev), where, val)
178: #define pci_write_config_dword(pdev, where, val)\
179: pcibios_write_config_dword(bus_number(pdev), devfn_number(pdev), where, val)
180: #else
181: #define PCI_SUPPORT_VER2
182: #define pci_bus_number(pci_dev) ((pci_dev)->bus->number)
183: #define pci_devfn(pci_dev) ((pci_dev)->devfn)
184: #endif
185:
186: /* The arg count changed, but function name did not.
187: We cover that bad choice by defining a new name.
188: */
189: #if LINUX_VERSION_CODE < 0x20159
190: #define dev_free_skb(skb) dev_kfree_skb(skb, FREE_WRITE)
191: #define dev_free_skb_irq(skb) dev_kfree_skb(skb, FREE_WRITE)
192: #elif LINUX_VERSION_CODE < 0x20400
193: #define dev_free_skb(skb) dev_kfree_skb(skb)
194: #define dev_free_skb_irq(skb) dev_kfree_skb(skb)
195: #else
196: #define dev_free_skb(skb) dev_kfree_skb(skb)
197: #define dev_free_skb_irq(skb) dev_kfree_skb_irq(skb)
198: #endif
199:
200: /* Added at the suggestion of Jes Sorensen. */
201: #if LINUX_VERSION_CODE > 0x20153
202: #include <linux/init.h>
203: #else
204: #define __init
205: #define __initdata
206: #define __initfunc(__arginit) __arginit
207: #endif
208:
209: /* The old 'struct device' used a too-generic name. */
210: #if LINUX_VERSION_CODE < 0x2030d
211: #define net_device device
212: #endif
213:
214: /* More changes for the 2.4 kernel, some in the zillion 2.3.99 releases. */
215: #if LINUX_VERSION_CODE < 0x20363
216: #define DECLARE_MUTEX(name) struct semaphore (name) = MUTEX;
217: #define down_write(semaphore_p) down(semaphore_p)
218: #define down_read(semaphore_p) down(semaphore_p)
219: #define up_write(semaphore_p) up(semaphore_p)
220: #define up_read(semaphore_p) up(semaphore_p)
221: /* Note that the kernel version has a broken time_before()! */
222: #define time_after(a,b) ((long)(b) - (long)(a) < 0)
223: #define time_before(a,b) ((long)(a) - (long)(b) < 0)
224: #else
225: #define get_free_page get_zeroed_page
226: #endif
227:
228: /* The 2.2 kernels added the start of capability-based security for operations
229: that formerally could only be done by root.
230: */
231: #if ! defined(CAP_NET_ADMIN)
232: #define capable(CAP_XXX) (suser())
233: #endif
234:
235: #if ! defined(HAVE_NETIF_QUEUE)
236: #define netif_wake_queue(dev) do { clear_bit( 0, (void*)&(dev)->tbusy); mark_bh(NET_BH); } while (0)
237: #define netif_start_tx_queue(dev) do { (dev)->tbusy = 0; dev->start = 1; } while (0)
238: #define netif_stop_tx_queue(dev) do { (dev)->tbusy = 1; dev->start = 0; } while (0)
239: #define netif_queue_paused(dev) ((dev)->tbusy != 0)
240: /* Splitting these lines exposes a bug in some preprocessors. */
241: #define netif_pause_tx_queue(dev) (test_and_set_bit( 0, (void*)&(dev)->tbusy))
242: #define netif_unpause_tx_queue(dev) do { clear_bit( 0, (void*)&(dev)->tbusy); } while (0)
243: #define netif_resume_tx_queue(dev) do { clear_bit( 0, (void*)&(dev)->tbusy); mark_bh(NET_BH); } while (0)
244:
245: #define netif_running(dev) ((dev)->start != 0)
246: #define netif_device_attach(dev) do {; } while (0)
247: #define netif_device_detach(dev) do {; } while (0)
248: #define netif_device_present(dev) (1)
249: #define netif_set_tx_timeout(dev, func, deltajiffs) do {; } while (0)
250: #define netif_link_down(dev) (dev)->flags &= ~IFF_RUNNING
251: #define netif_link_up(dev) (dev)->flags |= IFF_RUNNING
252:
253: #else
254:
255: #define netif_start_tx_queue(dev) netif_start_queue(dev)
256: #define netif_stop_tx_queue(dev) netif_stop_queue(dev)
257: #define netif_queue_paused(dev) netif_queue_stopped(dev)
258: #define netif_resume_tx_queue(dev) netif_wake_queue(dev)
259: /* Only used in transmit path. No function in 2.4. */
260: #define netif_pause_tx_queue(dev) 0
261: #define netif_unpause_tx_queue(dev) do {; } while (0)
262:
263: #ifdef __LINK_STATE_NOCARRIER
264: #define netif_link_down(dev) netif_carrier_off(dev)
265: #define netif_link_up(dev) netif_carrier_on(dev)
266: #else
267: #define netif_link_down(dev) (dev)->flags &= ~IFF_RUNNING
268: #define netif_link_up(dev) (dev)->flags |= IFF_RUNNING
269: #endif
270:
271: #endif
272: #ifndef PCI_DMA_BUS_IS_PHYS
273: #define pci_dma_sync_single(pci_dev, base_addr, extent, tofrom) do {; } while (0)
274: #define pci_map_single(pci_dev, base_addr, extent, dir) virt_to_bus(base_addr)
275: #define pci_unmap_single(pci_dev, base_addr, extent, dir) do {; } while (0)
276: #endif
277:
278: #endif
279: /*
280: * Local variables:
281: * c-indent-level: 4
282: * c-basic-offset: 4
283: * tab-width: 4
284: * End:
285: */
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