mirror of https://github.com/hak5/openwrt.git
433 lines
11 KiB
C
433 lines
11 KiB
C
/*
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* Linux-specific abstractions to gain some independence from linux kernel versions.
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* Pave over some 2.2 versus 2.4 versus 2.6 kernel differences.
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*
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* Copyright 2007, Broadcom Corporation
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* All Rights Reserved.
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*
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* THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
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* KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
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* SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
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*
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*/
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#ifndef _linuxver_h_
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#define _linuxver_h_
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#include <linux/version.h>
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#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 0))
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#include <linux/config.h>
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#else
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#include <linux/autoconf.h>
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#endif
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#include <linux/module.h>
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#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 3, 0))
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/* __NO_VERSION__ must be defined for all linkables except one in 2.2 */
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#ifdef __UNDEF_NO_VERSION__
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#undef __NO_VERSION__
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#else
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#define __NO_VERSION__
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#endif
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#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2, 3, 0) */
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0)
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#define module_param(_name_, _type_, _perm_) MODULE_PARM(_name_, "i")
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#define module_param_string(_name_, _string_, _size_, _perm_) \
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MODULE_PARM(_string_, "c" __MODULE_STRING(_size_))
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#endif
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/* linux/malloc.h is deprecated, use linux/slab.h instead. */
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#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 4, 9))
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#include <linux/malloc.h>
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#else
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#include <linux/slab.h>
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#endif
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#include <linux/types.h>
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#include <linux/init.h>
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#include <linux/mm.h>
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#include <linux/string.h>
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#include <linux/pci.h>
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#include <linux/interrupt.h>
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#include <linux/netdevice.h>
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#include <asm/io.h>
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#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 41))
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#include <linux/workqueue.h>
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#else
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#include <linux/tqueue.h>
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#ifndef work_struct
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#define work_struct tq_struct
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#endif
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#ifndef INIT_WORK
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#define INIT_WORK(_work, _func, _data) INIT_TQUEUE((_work), (_func), (_data))
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#endif
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#ifndef schedule_work
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#define schedule_work(_work) schedule_task((_work))
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#endif
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#ifndef flush_scheduled_work
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#define flush_scheduled_work() flush_scheduled_tasks()
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#endif
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#endif /* LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 41) */
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 20)
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#define MY_INIT_WORK(_work, _func, _data) INIT_WORK(_work, _func)
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#else
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#define MY_INIT_WORK(_work, _func, _data) INIT_WORK(_work, _func, _data)
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typedef void (*work_func_t)(void *work);
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#endif /* < 2.6.20 */
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#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 0))
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/* Some distributions have their own 2.6.x compatibility layers */
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#ifndef IRQ_NONE
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typedef void irqreturn_t;
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#define IRQ_NONE
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#define IRQ_HANDLED
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#define IRQ_RETVAL(x)
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#endif
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#else
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typedef irqreturn_t(*FN_ISR) (int irq, void *dev_id, struct pt_regs *ptregs);
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#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 0) */
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#if defined(CONFIG_PCMCIA) || defined(CONFIG_PCMCIA_MODULE)
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#include <pcmcia/version.h>
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#include <pcmcia/cs_types.h>
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#include <pcmcia/cs.h>
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#include <pcmcia/cistpl.h>
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#include <pcmcia/cisreg.h>
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#include <pcmcia/ds.h>
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#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 69))
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/* In 2.5 (as of 2.5.69 at least) there is a cs_error exported which
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* does this, but it's not in 2.4 so we do our own for now.
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*/
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static inline void
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cs_error(client_handle_t handle, int func, int ret)
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{
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error_info_t err = { func, ret };
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CardServices(ReportError, handle, &err);
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}
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#endif
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 15))
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typedef struct pcmcia_device dev_link_t;
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#endif
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#endif /* CONFIG_PCMCIA */
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#ifndef __exit
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#define __exit
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#endif
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#ifndef __devexit
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#define __devexit
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#endif
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#ifndef __devinit
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#define __devinit __init
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#endif
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#ifndef __devinitdata
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#define __devinitdata
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#endif
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#ifndef __devexit_p
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#define __devexit_p(x) x
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#endif
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#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 4, 0))
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#define pci_get_drvdata(dev) (dev)->sysdata
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#define pci_set_drvdata(dev, value) (dev)->sysdata = (value)
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/*
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* New-style (2.4.x) PCI/hot-pluggable PCI/CardBus registration
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*/
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struct pci_device_id {
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unsigned int vendor, device; /* Vendor and device ID or PCI_ANY_ID */
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unsigned int subvendor, subdevice; /* Subsystem ID's or PCI_ANY_ID */
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unsigned int class, class_mask; /* (class,subclass,prog-if) triplet */
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unsigned long driver_data; /* Data private to the driver */
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};
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struct pci_driver {
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struct list_head node;
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char *name;
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const struct pci_device_id *id_table; /* NULL if wants all devices */
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int (*probe)(struct pci_dev *dev,
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const struct pci_device_id *id); /* New device inserted */
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void (*remove)(struct pci_dev *dev); /* Device removed (NULL if not a hot-plug
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* capable driver)
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*/
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void (*suspend)(struct pci_dev *dev); /* Device suspended */
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void (*resume)(struct pci_dev *dev); /* Device woken up */
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};
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#define MODULE_DEVICE_TABLE(type, name)
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#define PCI_ANY_ID (~0)
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/* compatpci.c */
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#define pci_module_init pci_register_driver
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extern int pci_register_driver(struct pci_driver *drv);
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extern void pci_unregister_driver(struct pci_driver *drv);
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#endif /* PCI registration */
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#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 2, 18))
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#ifdef MODULE
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#define module_init(x) int init_module(void) { return x(); }
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#define module_exit(x) void cleanup_module(void) { x(); }
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#else
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#define module_init(x) __initcall(x);
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#define module_exit(x) __exitcall(x);
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#endif
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#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2, 2, 18) */
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#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 3, 48))
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#define list_for_each(pos, head) \
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for (pos = (head)->next; pos != (head); pos = pos->next)
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#endif
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#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 3, 13))
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#define pci_resource_start(dev, bar) ((dev)->base_address[(bar)])
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#elif (LINUX_VERSION_CODE < KERNEL_VERSION(2, 3, 44))
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#define pci_resource_start(dev, bar) ((dev)->resource[(bar)].start)
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#endif
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#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 3, 23))
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#define pci_enable_device(dev) do { } while (0)
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#endif
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#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 3, 14))
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#define net_device device
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#endif
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#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 3, 42))
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/*
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* DMA mapping
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*
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* See linux/Documentation/DMA-mapping.txt
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*/
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#ifndef PCI_DMA_TODEVICE
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#define PCI_DMA_TODEVICE 1
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#define PCI_DMA_FROMDEVICE 2
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#endif
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typedef u32 dma_addr_t;
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/* Pure 2^n version of get_order */
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static inline int get_order(unsigned long size)
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{
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int order;
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size = (size-1) >> (PAGE_SHIFT-1);
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order = -1;
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do {
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size >>= 1;
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order++;
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} while (size);
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return order;
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}
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static inline void *pci_alloc_consistent(struct pci_dev *hwdev, size_t size,
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dma_addr_t *dma_handle)
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{
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void *ret;
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int gfp = GFP_ATOMIC | GFP_DMA;
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ret = (void *)__get_free_pages(gfp, get_order(size));
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if (ret != NULL) {
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memset(ret, 0, size);
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*dma_handle = virt_to_bus(ret);
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}
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return ret;
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}
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static inline void pci_free_consistent(struct pci_dev *hwdev, size_t size,
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void *vaddr, dma_addr_t dma_handle)
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{
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free_pages((unsigned long)vaddr, get_order(size));
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}
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#ifdef ILSIM
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extern uint pci_map_single(void *dev, void *va, uint size, int direction);
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extern void pci_unmap_single(void *dev, uint pa, uint size, int direction);
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#else
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#define pci_map_single(cookie, address, size, dir) virt_to_bus(address)
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#define pci_unmap_single(cookie, address, size, dir)
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#endif
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#endif /* DMA mapping */
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#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 3, 43))
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#define dev_kfree_skb_any(a) dev_kfree_skb(a)
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#define netif_down(dev) do { (dev)->start = 0; } while (0)
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/* pcmcia-cs provides its own netdevice compatibility layer */
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#ifndef _COMPAT_NETDEVICE_H
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/*
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* SoftNet
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*
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* For pre-softnet kernels we need to tell the upper layer not to
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* re-enter start_xmit() while we are in there. However softnet
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* guarantees not to enter while we are in there so there is no need
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* to do the netif_stop_queue() dance unless the transmit queue really
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* gets stuck. This should also improve performance according to tests
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* done by Aman Singla.
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*/
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#define dev_kfree_skb_irq(a) dev_kfree_skb(a)
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#define netif_wake_queue(dev) \
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do { clear_bit(0, &(dev)->tbusy); mark_bh(NET_BH); } while (0)
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#define netif_stop_queue(dev) set_bit(0, &(dev)->tbusy)
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static inline void netif_start_queue(struct net_device *dev)
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{
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dev->tbusy = 0;
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dev->interrupt = 0;
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dev->start = 1;
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}
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#define netif_queue_stopped(dev) (dev)->tbusy
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#define netif_running(dev) (dev)->start
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#endif /* _COMPAT_NETDEVICE_H */
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#define netif_device_attach(dev) netif_start_queue(dev)
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#define netif_device_detach(dev) netif_stop_queue(dev)
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/* 2.4.x renamed bottom halves to tasklets */
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#define tasklet_struct tq_struct
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static inline void tasklet_schedule(struct tasklet_struct *tasklet)
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{
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queue_task(tasklet, &tq_immediate);
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mark_bh(IMMEDIATE_BH);
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}
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static inline void tasklet_init(struct tasklet_struct *tasklet,
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void (*func)(unsigned long),
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unsigned long data)
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{
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tasklet->next = NULL;
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tasklet->sync = 0;
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tasklet->routine = (void (*)(void *))func;
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tasklet->data = (void *)data;
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}
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#define tasklet_kill(tasklet) { do{} while (0); }
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/* 2.4.x introduced del_timer_sync() */
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#define del_timer_sync(timer) del_timer(timer)
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#else
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#define netif_down(dev)
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#endif /* SoftNet */
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#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 4, 3))
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/*
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* Emit code to initialise a tq_struct's routine and data pointers
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*/
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#define PREPARE_TQUEUE(_tq, _routine, _data) \
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do { \
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(_tq)->routine = _routine; \
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(_tq)->data = _data; \
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} while (0)
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/*
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* Emit code to initialise all of a tq_struct
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*/
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#define INIT_TQUEUE(_tq, _routine, _data) \
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do { \
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INIT_LIST_HEAD(&(_tq)->list); \
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(_tq)->sync = 0; \
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PREPARE_TQUEUE((_tq), (_routine), (_data)); \
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} while (0)
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#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2, 4, 3) */
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#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 4, 6))
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/* Power management related routines */
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static inline int
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pci_save_state(struct pci_dev *dev, u32 *buffer)
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{
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int i;
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if (buffer) {
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for (i = 0; i < 16; i++)
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pci_read_config_dword(dev, i * 4, &buffer[i]);
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}
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return 0;
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}
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static inline int
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pci_restore_state(struct pci_dev *dev, u32 *buffer)
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{
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int i;
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if (buffer) {
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for (i = 0; i < 16; i++)
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pci_write_config_dword(dev, i * 4, buffer[i]);
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}
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/*
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* otherwise, write the context information we know from bootup.
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* This works around a problem where warm-booting from Windows
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* combined with a D3(hot)->D0 transition causes PCI config
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* header data to be forgotten.
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*/
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else {
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for (i = 0; i < 6; i ++)
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pci_write_config_dword(dev,
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PCI_BASE_ADDRESS_0 + (i * 4),
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pci_resource_start(dev, i));
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pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
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}
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return 0;
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}
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#endif /* PCI power management */
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/* Old cp0 access macros deprecated in 2.4.19 */
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#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 4, 19))
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#define read_c0_count() read_32bit_cp0_register(CP0_COUNT)
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#endif
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/* Module refcount handled internally in 2.6.x */
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#ifndef SET_MODULE_OWNER
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#define SET_MODULE_OWNER(dev) do {} while (0)
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#define OLD_MOD_INC_USE_COUNT MOD_INC_USE_COUNT
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#define OLD_MOD_DEC_USE_COUNT MOD_DEC_USE_COUNT
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#else
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#define OLD_MOD_INC_USE_COUNT do {} while (0)
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#define OLD_MOD_DEC_USE_COUNT do {} while (0)
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#endif
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#ifndef SET_NETDEV_DEV
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#define SET_NETDEV_DEV(net, pdev) do {} while (0)
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#endif
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#ifndef HAVE_FREE_NETDEV
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#define free_netdev(dev) kfree(dev)
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#endif
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#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 0))
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/* struct packet_type redefined in 2.6.x */
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#define af_packet_priv data
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#endif
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/* suspend args */
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 11)
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#define DRV_SUSPEND_STATE_TYPE pm_message_t
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#else
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#define DRV_SUSPEND_STATE_TYPE uint32
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#endif
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#endif /* _linuxver_h_ */
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