kernel-ark/drivers/ieee1394/hosts.c
Jean Delvare 6473d160b4 PCI: Cleanup the includes of <linux/pci.h>
I noticed that many source files include <linux/pci.h> while they do
not appear to need it. Here is an attempt to clean it all up.

In order to find all possibly affected files, I searched for all
files including <linux/pci.h> but without any other occurence of "pci"
or "PCI". I removed the include statement from all of these, then I
compiled an allmodconfig kernel on both i386 and x86_64 and fixed the
false positives manually.

My tests covered 66% of the affected files, so there could be false
positives remaining. Untested files are:

arch/alpha/kernel/err_common.c
arch/alpha/kernel/err_ev6.c
arch/alpha/kernel/err_ev7.c
arch/ia64/sn/kernel/huberror.c
arch/ia64/sn/kernel/xpnet.c
arch/m68knommu/kernel/dma.c
arch/mips/lib/iomap.c
arch/powerpc/platforms/pseries/ras.c
arch/ppc/8260_io/enet.c
arch/ppc/8260_io/fcc_enet.c
arch/ppc/8xx_io/enet.c
arch/ppc/syslib/ppc4xx_sgdma.c
arch/sh64/mach-cayman/iomap.c
arch/xtensa/kernel/xtensa_ksyms.c
arch/xtensa/platform-iss/setup.c
drivers/i2c/busses/i2c-at91.c
drivers/i2c/busses/i2c-mpc.c
drivers/media/video/saa711x.c
drivers/misc/hdpuftrs/hdpu_cpustate.c
drivers/misc/hdpuftrs/hdpu_nexus.c
drivers/net/au1000_eth.c
drivers/net/fec_8xx/fec_main.c
drivers/net/fec_8xx/fec_mii.c
drivers/net/fs_enet/fs_enet-main.c
drivers/net/fs_enet/mac-fcc.c
drivers/net/fs_enet/mac-fec.c
drivers/net/fs_enet/mac-scc.c
drivers/net/fs_enet/mii-bitbang.c
drivers/net/fs_enet/mii-fec.c
drivers/net/ibm_emac/ibm_emac_core.c
drivers/net/lasi_82596.c
drivers/parisc/hppb.c
drivers/sbus/sbus.c
drivers/video/g364fb.c
drivers/video/platinumfb.c
drivers/video/stifb.c
drivers/video/valkyriefb.c
include/asm-arm/arch-ixp4xx/dma.h
sound/oss/au1550_ac97.c

I would welcome test reports for these files. I am fine with removing
the untested files from the patch if the general opinion is that these
changes aren't safe. The tested part would still be nice to have.

Note that this patch depends on another header fixup patch I submitted
to LKML yesterday:
  [PATCH] scatterlist.h needs types.h
  http://lkml.org/lkml/2007/3/01/141

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Badari Pulavarty <pbadari@us.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:35 -07:00

249 lines
6.3 KiB
C

/*
* IEEE 1394 for Linux
*
* Low level (host adapter) management.
*
* Copyright (C) 1999 Andreas E. Bombe
* Copyright (C) 1999 Emanuel Pirker
*
* This code is licensed under the GPL. See the file COPYING in the root
* directory of the kernel sources for details.
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/list.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/timer.h>
#include <linux/jiffies.h>
#include <linux/mutex.h>
#include "csr1212.h"
#include "ieee1394.h"
#include "ieee1394_types.h"
#include "hosts.h"
#include "ieee1394_core.h"
#include "highlevel.h"
#include "nodemgr.h"
#include "csr.h"
#include "config_roms.h"
static void delayed_reset_bus(struct work_struct *work)
{
struct hpsb_host *host =
container_of(work, struct hpsb_host, delayed_reset.work);
int generation = host->csr.generation + 1;
/* The generation field rolls over to 2 rather than 0 per IEEE
* 1394a-2000. */
if (generation > 0xf || generation < 2)
generation = 2;
CSR_SET_BUS_INFO_GENERATION(host->csr.rom, generation);
if (csr1212_generate_csr_image(host->csr.rom) != CSR1212_SUCCESS) {
/* CSR image creation failed.
* Reset generation field and do not issue a bus reset. */
CSR_SET_BUS_INFO_GENERATION(host->csr.rom,
host->csr.generation);
return;
}
host->csr.generation = generation;
host->update_config_rom = 0;
if (host->driver->set_hw_config_rom)
host->driver->set_hw_config_rom(host,
host->csr.rom->bus_info_data);
host->csr.gen_timestamp[host->csr.generation] = jiffies;
hpsb_reset_bus(host, SHORT_RESET);
}
static int dummy_transmit_packet(struct hpsb_host *h, struct hpsb_packet *p)
{
return 0;
}
static int dummy_devctl(struct hpsb_host *h, enum devctl_cmd c, int arg)
{
return -1;
}
static int dummy_isoctl(struct hpsb_iso *iso, enum isoctl_cmd command,
unsigned long arg)
{
return -1;
}
static struct hpsb_host_driver dummy_driver = {
.transmit_packet = dummy_transmit_packet,
.devctl = dummy_devctl,
.isoctl = dummy_isoctl
};
static int alloc_hostnum_cb(struct hpsb_host *host, void *__data)
{
int *hostnum = __data;
if (host->id == *hostnum)
return 1;
return 0;
}
static DEFINE_MUTEX(host_num_alloc);
/**
* hpsb_alloc_host - allocate a new host controller.
* @drv: the driver that will manage the host controller
* @extra: number of extra bytes to allocate for the driver
*
* Allocate a &hpsb_host and initialize the general subsystem specific
* fields. If the driver needs to store per host data, as drivers
* usually do, the amount of memory required can be specified by the
* @extra parameter. Once allocated, the driver should initialize the
* driver specific parts, enable the controller and make it available
* to the general subsystem using hpsb_add_host().
*
* Return Value: a pointer to the &hpsb_host if successful, %NULL if
* no memory was available.
*/
struct hpsb_host *hpsb_alloc_host(struct hpsb_host_driver *drv, size_t extra,
struct device *dev)
{
struct hpsb_host *h;
int i;
int hostnum = 0;
h = kzalloc(sizeof(*h) + extra, GFP_KERNEL);
if (!h)
return NULL;
h->csr.rom = csr1212_create_csr(&csr_bus_ops, CSR_BUS_INFO_SIZE, h);
if (!h->csr.rom)
goto fail;
h->hostdata = h + 1;
h->driver = drv;
INIT_LIST_HEAD(&h->pending_packets);
INIT_LIST_HEAD(&h->addr_space);
for (i = 2; i < 16; i++)
h->csr.gen_timestamp[i] = jiffies - 60 * HZ;
atomic_set(&h->generation, 0);
INIT_DELAYED_WORK(&h->delayed_reset, delayed_reset_bus);
init_timer(&h->timeout);
h->timeout.data = (unsigned long) h;
h->timeout.function = abort_timedouts;
h->timeout_interval = HZ / 20; /* 50ms, half of minimum SPLIT_TIMEOUT */
h->topology_map = h->csr.topology_map + 3;
h->speed_map = (u8 *)(h->csr.speed_map + 2);
mutex_lock(&host_num_alloc);
while (nodemgr_for_each_host(&hostnum, alloc_hostnum_cb))
hostnum++;
mutex_unlock(&host_num_alloc);
h->id = hostnum;
memcpy(&h->device, &nodemgr_dev_template_host, sizeof(h->device));
h->device.parent = dev;
snprintf(h->device.bus_id, BUS_ID_SIZE, "fw-host%d", h->id);
h->class_dev.dev = &h->device;
h->class_dev.class = &hpsb_host_class;
snprintf(h->class_dev.class_id, BUS_ID_SIZE, "fw-host%d", h->id);
if (device_register(&h->device))
goto fail;
if (class_device_register(&h->class_dev)) {
device_unregister(&h->device);
goto fail;
}
get_device(&h->device);
return h;
fail:
kfree(h);
return NULL;
}
int hpsb_add_host(struct hpsb_host *host)
{
if (hpsb_default_host_entry(host))
return -ENOMEM;
highlevel_add_host(host);
return 0;
}
void hpsb_resume_host(struct hpsb_host *host)
{
if (host->driver->set_hw_config_rom)
host->driver->set_hw_config_rom(host,
host->csr.rom->bus_info_data);
host->driver->devctl(host, RESET_BUS, SHORT_RESET);
}
void hpsb_remove_host(struct hpsb_host *host)
{
host->is_shutdown = 1;
cancel_delayed_work(&host->delayed_reset);
flush_scheduled_work();
host->driver = &dummy_driver;
highlevel_remove_host(host);
class_device_unregister(&host->class_dev);
device_unregister(&host->device);
}
/**
* hpsb_update_config_rom_image - updates configuration ROM image of a host
*
* Updates the configuration ROM image of a host. rom_version must be the
* current version, otherwise it will fail with return value -1. If this
* host does not support config-rom-update, it will return -%EINVAL.
* Return value 0 indicates success.
*/
int hpsb_update_config_rom_image(struct hpsb_host *host)
{
unsigned long reset_delay;
int next_gen = host->csr.generation + 1;
if (!host->update_config_rom)
return -EINVAL;
if (next_gen > 0xf)
next_gen = 2;
/* Stop the delayed interrupt, we're about to change the config rom and
* it would be a waste to do a bus reset twice. */
cancel_delayed_work(&host->delayed_reset);
/* IEEE 1394a-2000 prohibits using the same generation number
* twice in a 60 second period. */
if (time_before(jiffies, host->csr.gen_timestamp[next_gen] + 60 * HZ))
/* Wait 60 seconds from the last time this generation number was
* used. */
reset_delay =
(60 * HZ) + host->csr.gen_timestamp[next_gen] - jiffies;
else
/* Wait 1 second in case some other code wants to change the
* Config ROM in the near future. */
reset_delay = HZ;
PREPARE_DELAYED_WORK(&host->delayed_reset, delayed_reset_bus);
schedule_delayed_work(&host->delayed_reset, reset_delay);
return 0;
}