/tmp/l4check/full_tree/trunk/l4/pkg/l4io/server/lib-pci/src/glue.c File Reference

L4Env l4io PCIlib Linux PCI Extracts Glue Code. More...

#include <linux/config.h>
#include <linux/proc_fs.h>
#include <linux/ioport.h>
#include <linux/pci.h>
#include <linux/mm.h>
#include <asm/io.h>
#include <l4/util/macros.h>
#include <l4/util/bitops.h>
#include "pcilib.h"
#include "io.h"
#include "res.h"
#include <asm/processor.h>

Go to the source code of this file.

Resource Management Glue for PCIlib

Linux' PCI subsystem _expects_ the new, hierarchical resource management system.
So it has to be mapped to io's flat allocation scheme:

callback requests/releases only for IORESOURCE_BUSY regions
announce top-level I/O memory regions (I/O has to initiate mappings from sigma0 or whomsoever)

Shame: Almost all of this is from Linux 2.4.x.

Test:
krishna: central root resources are essential - io{port,mem}_resource

Test:
krishna: no resources can be released (this only means no HOTPLUGGING is supported)

struct resource ioport_resource

fake port resource (PCIlib glue)

struct resource iomem_resource

fake memory resource (PCIlib glue)

unsigned long pci_mem_start = 0x80000000

map MMIO regions above 2GB

static char * do_resource_list (struct resource *entry, const char *fmt, int offset, char *buf, char *end)

static struct resource * __request_resource (struct resource *root, struct resource *new)

Generic resource requests.

struct resource * __request_region (struct resource *parent, unsigned long start, unsigned long n, const char *name)

Generic region requests.

void __release_region (struct resource *parent, unsigned long start, unsigned long n)

static int __find_resource (struct resource *root, struct resource *new, unsigned long size, unsigned long min, unsigned long max, unsigned long align, void(*alignf)(void *, struct resource *, unsigned long, unsigned long), void *alignf_data)

Generic Find empty slot in the resource tree given range and alignment.

int request_resource (struct resource *root, struct resource *new)

Linux resource requests.

int allocate_resource (struct resource *root, struct resource *new, unsigned long size, unsigned long min, unsigned long max, unsigned long align, void(*alignf)(void *, struct resource *, unsigned long, unsigned long), void *alignf_data)

Linux resource allocation.

Miscellaneous Glue for PCIlib

dev_probe_lock

dev_probe_unlock
simple_strtol (mapped to strtol)
schedule_timeout
.

..

struct cpuinfo_x86 boot_cpu_data

void dev_probe_lock (void)

dev_probe_lock

void dev_probe_unlock (void)

dev_probe_unlock

long simple_strtol (const char *cp, char **endp, unsigned int base)

simple_strtol

signed long FASTCALL (schedule_timeout(signed long timeout))

schedule_timeout

void __const_udelay (unsigned long usecs)

int remap_page_range (unsigned long from, unsigned long to, unsigned long size, pgprot_t prot)

void * pci_alloc_consistent (struct pci_dev *hwdev, size_t size, dma_addr_t *dma_handle)

void pci_free_consistent (struct pci_dev *hwdev, size_t size, void *vaddr, dma_addr_t dma_handle)

void FASTCALL (add_wait_queue(wait_queue_head_t *q, wait_queue_t *wait))

void FASTCALL (remove_wait_queue(wait_queue_head_t *q, wait_queue_t *wait))

void FASTCALL (__wake_up(wait_queue_head_t *q, unsigned int mode, int nr))

Defines

#define DO_DEBUG 0

#define FASTCALL(x) __attribute__((regparm(3))) x

Functions

void * malloc (size_t size)

void free (void *ptr)

unsigned int strtol (const char *nptr, char **endptr, int base)

Interrupt Line Request Glue for PCIlib

Mapping of PCIlib interrupt allocation.

int request_irq (unsigned int irq, void(*handler)(int, void *, struct pt_regs *), unsigned long flags, const char *name, void *id)

Request interrupt.

void free_irq (unsigned int irq, void *id)

Free Interrupt.

Memory Management Glue for PCIlib

void * kmalloc (size_t size, int gfp)

Well known kmalloc.

void kfree (const void *obj)

Well known kfree.

unsigned long FASTCALL (__get_free_pages(unsigned int gfp, unsigned int order))

Well known __get_free_pages.

void FASTCALL (free_pages(unsigned long addr, unsigned int order))

Well known free_pages.

PCIlib interface

Todo:
/proc fs has to be optional

int PCI_init (int list)

PCIlib initialization.

unsigned short PCI_linux_to_io (void *linux_pdev, void *l4io_pdev)

Info Type Conversion.

Detailed Description

L4Env l4io PCIlib Linux PCI Extracts Glue Code.

Date:: 05/28/2003

Author:: Christian Helmuth <ch12@os.inf.tu-dresden.de>

Definition in file glue.c.

Function Documentation

long simple_strtol	(	const char *	cp,
		char **	endp,
		unsigned int	base
	)

simple_strtol

Test:: krishna: base is `unsigned int' NOT `int', but it's always `0' in the code (as far as I know)

Definition at line 406 of file glue.c.

Variable Documentation

struct resource iomem_resource

Initial value:

 {
  "PCI mem",
  0x00000000, 0xffffffff,
  IORESOURCE_MEM
}

fake memory resource (PCIlib glue)

Definition at line 85 of file glue.c.

struct resource ioport_resource

Initial value:

 {
  "PCI IO",
  0x0000, IO_SPACE_LIMIT,
  IORESOURCE_IO
}

fake port resource (PCIlib glue)

Definition at line 79 of file glue.c.


Resource Management Glue for PCIlib
Linux' PCI subsystem _expects_ the new, hierarchical resource management system. So it has to be mapped to io's flat allocation scheme: callback requests/releases only for IORESOURCE_BUSY regions announce top-level I/O memory regions (I/O has to initiate mappings from sigma0 or whomsoever) Shame: Almost all of this is from Linux 2.4.x. Test: krishna: central root resources are essential - io{port,mem}_resource Test: krishna: no resources can be released (this only means no HOTPLUGGING is supported)
struct resource	ioport_resource
	fake port resource (PCIlib glue)
struct resource	iomem_resource
	fake memory resource (PCIlib glue)
unsigned long	pci_mem_start = 0x80000000
	map MMIO regions above 2GB
static char *	do_resource_list (struct resource entry, const char fmt, int offset, char buf, char end)
static struct resource *	__request_resource (struct resource root, struct resource new)
	Generic resource requests.
struct resource *	__request_region (struct resource parent, unsigned long start, unsigned long n, const char name)
	Generic region requests.
void	__release_region (struct resource *parent, unsigned long start, unsigned long n)
static int	__find_resource (struct resource root, struct resource new, unsigned long size, unsigned long min, unsigned long max, unsigned long align, void(alignf)(void , struct resource , unsigned long, unsigned long), void alignf_data)
	Generic Find empty slot in the resource tree given range and alignment.
int	request_resource (struct resource root, struct resource new)
	Linux resource requests.
int	allocate_resource (struct resource root, struct resource new, unsigned long size, unsigned long min, unsigned long max, unsigned long align, void(alignf)(void , struct resource , unsigned long, unsigned long), void alignf_data)
	Linux resource allocation.
Miscellaneous Glue for PCIlib
dev_probe_lock dev_probe_unlock simple_strtol (mapped to strtol) schedule_timeout . ..
struct cpuinfo_x86	boot_cpu_data
void	dev_probe_lock (void)
	dev_probe_lock
void	dev_probe_unlock (void)
	dev_probe_unlock
long	simple_strtol (const char cp, char *endp, unsigned int base)
	simple_strtol
signed long	FASTCALL (schedule_timeout(signed long timeout))
	schedule_timeout
void	__const_udelay (unsigned long usecs)
int	remap_page_range (unsigned long from, unsigned long to, unsigned long size, pgprot_t prot)
void *	pci_alloc_consistent (struct pci_dev hwdev, size_t size, dma_addr_t dma_handle)
void	pci_free_consistent (struct pci_dev hwdev, size_t size, void vaddr, dma_addr_t dma_handle)
void	FASTCALL (add_wait_queue(wait_queue_head_t q, wait_queue_t wait))
void	FASTCALL (remove_wait_queue(wait_queue_head_t q, wait_queue_t wait))
void	FASTCALL (__wake_up(wait_queue_head_t *q, unsigned int mode, int nr))
Defines
#define	DO_DEBUG 0
#define	FASTCALL(x) __attribute__((regparm(3))) x
Functions
void *	malloc (size_t size)
void	free (void *ptr)
unsigned int	strtol (const char nptr, char *endptr, int base)
Interrupt Line Request Glue for PCIlib
Mapping of PCIlib interrupt allocation.
int	request_irq (unsigned int irq, void(handler)(int, void , struct pt_regs ), unsigned long flags, const char name, void *id)
	Request interrupt.
void	free_irq (unsigned int irq, void *id)
	Free Interrupt.
Memory Management Glue for PCIlib
void *	kmalloc (size_t size, int gfp)
	Well known kmalloc.
void	kfree (const void *obj)
	Well known kfree.
unsigned long	FASTCALL (__get_free_pages(unsigned int gfp, unsigned int order))
	Well known __get_free_pages.
void	FASTCALL (free_pages(unsigned long addr, unsigned int order))
	Well known free_pages.
PCIlib interface
Todo: /proc fs has to be optional
int	PCI_init (int list)
	PCIlib initialization.
unsigned short	PCI_linux_to_io (void linux_pdev, void l4io_pdev)
	Info Type Conversion.