WSL2-Linux-Kernel/arch/parisc/kernel/drivers.c

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/*
* drivers.c
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* Copyright (c) 1999 The Puffin Group
* Copyright (c) 2001 Matthew Wilcox for Hewlett Packard
* Copyright (c) 2001 Helge Deller <deller@gmx.de>
* Copyright (c) 2001,2002 Ryan Bradetich
* Copyright (c) 2004-2005 Thibaut VARENE <varenet@parisc-linux.org>
*
* The file handles registering devices and drivers, then matching them.
* It's the closest we get to a dating agency.
*
* If you're thinking about modifying this file, here are some gotchas to
* bear in mind:
* - 715/Mirage device paths have a dummy device between Lasi and its children
* - The EISA adapter may show up as a sibling or child of Wax
* - Dino has an optionally functional serial port. If firmware enables it,
* it shows up as a child of Dino. If firmware disables it, the buswalk
* finds it and it shows up as a child of Cujo
* - Dino has both parisc and pci devices as children
* - parisc devices are discovered in a random order, including children
* before parents in some cases.
*/
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/spinlock.h>
#include <linux/string.h>
#include <asm/hardware.h>
#include <asm/io.h>
#include <asm/pdc.h>
#include <asm/parisc-device.h>
/* See comments in include/asm-parisc/pci.h */
struct hppa_dma_ops *hppa_dma_ops __read_mostly;
EXPORT_SYMBOL(hppa_dma_ops);
static struct device root = {
.bus_id = "parisc",
};
[PARISC] Convert parisc_device tree to use struct device klists Fix parse_tree_node. much more needs to be done to fix this file. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Make drivers.c compile based on a patch from Pat Mochel. From: Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Fix drivers.c to create new device tree nodes when no match is found. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Do a proper depth-first search returning parents before children, using the new klist infrastructure. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Fixed parisc_device traversal so that pdc_stable works again Fixed check_dev so it doesn't dereference a parisc_device until it has verified the bus type Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Convert pa_dev->hpa from an unsigned long to a struct resource. Use insert_resource() instead of request_mem_region(). Request resources at bus walk time instead of driver probe time. Don't release the resources as we don't have any hotplug parisc_device support yet. Add parisc_pathname() to conveniently get the textual representation of the hwpath used in sysfs. Inline the remnants of claim_device() into its caller. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> I noticed that some of the STI regions weren't showing up in iomem. Reading the STI spec indicated that all STI devices occupy at least 32MB. So check for STI HPAs and give them 32MB instead of 4kB. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2005-10-22 06:33:38 +04:00
static inline int check_dev(struct device *dev)
{
if (dev->bus == &parisc_bus_type) {
struct parisc_device *pdev;
pdev = to_parisc_device(dev);
return pdev->id.hw_type != HPHW_FAULTY;
}
return 1;
}
static struct device *
parse_tree_node(struct device *parent, int index, struct hardware_path *modpath);
[PARISC] Convert parisc_device tree to use struct device klists Fix parse_tree_node. much more needs to be done to fix this file. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Make drivers.c compile based on a patch from Pat Mochel. From: Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Fix drivers.c to create new device tree nodes when no match is found. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Do a proper depth-first search returning parents before children, using the new klist infrastructure. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Fixed parisc_device traversal so that pdc_stable works again Fixed check_dev so it doesn't dereference a parisc_device until it has verified the bus type Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Convert pa_dev->hpa from an unsigned long to a struct resource. Use insert_resource() instead of request_mem_region(). Request resources at bus walk time instead of driver probe time. Don't release the resources as we don't have any hotplug parisc_device support yet. Add parisc_pathname() to conveniently get the textual representation of the hwpath used in sysfs. Inline the remnants of claim_device() into its caller. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> I noticed that some of the STI regions weren't showing up in iomem. Reading the STI spec indicated that all STI devices occupy at least 32MB. So check for STI HPAs and give them 32MB instead of 4kB. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2005-10-22 06:33:38 +04:00
struct recurse_struct {
void * obj;
int (*fn)(struct device *, void *);
};
static int descend_children(struct device * dev, void * data)
{
struct recurse_struct * recurse_data = (struct recurse_struct *)data;
if (recurse_data->fn(dev, recurse_data->obj))
return 1;
else
return device_for_each_child(dev, recurse_data, descend_children);
}
/**
[PARISC] Convert parisc_device tree to use struct device klists Fix parse_tree_node. much more needs to be done to fix this file. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Make drivers.c compile based on a patch from Pat Mochel. From: Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Fix drivers.c to create new device tree nodes when no match is found. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Do a proper depth-first search returning parents before children, using the new klist infrastructure. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Fixed parisc_device traversal so that pdc_stable works again Fixed check_dev so it doesn't dereference a parisc_device until it has verified the bus type Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Convert pa_dev->hpa from an unsigned long to a struct resource. Use insert_resource() instead of request_mem_region(). Request resources at bus walk time instead of driver probe time. Don't release the resources as we don't have any hotplug parisc_device support yet. Add parisc_pathname() to conveniently get the textual representation of the hwpath used in sysfs. Inline the remnants of claim_device() into its caller. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> I noticed that some of the STI regions weren't showing up in iomem. Reading the STI spec indicated that all STI devices occupy at least 32MB. So check for STI HPAs and give them 32MB instead of 4kB. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2005-10-22 06:33:38 +04:00
* for_each_padev - Iterate over all devices in the tree
* @fn: Function to call for each device.
* @data: Data to pass to the called function.
*
[PARISC] Convert parisc_device tree to use struct device klists Fix parse_tree_node. much more needs to be done to fix this file. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Make drivers.c compile based on a patch from Pat Mochel. From: Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Fix drivers.c to create new device tree nodes when no match is found. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Do a proper depth-first search returning parents before children, using the new klist infrastructure. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Fixed parisc_device traversal so that pdc_stable works again Fixed check_dev so it doesn't dereference a parisc_device until it has verified the bus type Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Convert pa_dev->hpa from an unsigned long to a struct resource. Use insert_resource() instead of request_mem_region(). Request resources at bus walk time instead of driver probe time. Don't release the resources as we don't have any hotplug parisc_device support yet. Add parisc_pathname() to conveniently get the textual representation of the hwpath used in sysfs. Inline the remnants of claim_device() into its caller. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> I noticed that some of the STI regions weren't showing up in iomem. Reading the STI spec indicated that all STI devices occupy at least 32MB. So check for STI HPAs and give them 32MB instead of 4kB. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2005-10-22 06:33:38 +04:00
* This performs a depth-first traversal of the tree, calling the
* function passed for each node. It calls the function for parents
* before children.
*/
[PARISC] Convert parisc_device tree to use struct device klists Fix parse_tree_node. much more needs to be done to fix this file. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Make drivers.c compile based on a patch from Pat Mochel. From: Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Fix drivers.c to create new device tree nodes when no match is found. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Do a proper depth-first search returning parents before children, using the new klist infrastructure. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Fixed parisc_device traversal so that pdc_stable works again Fixed check_dev so it doesn't dereference a parisc_device until it has verified the bus type Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Convert pa_dev->hpa from an unsigned long to a struct resource. Use insert_resource() instead of request_mem_region(). Request resources at bus walk time instead of driver probe time. Don't release the resources as we don't have any hotplug parisc_device support yet. Add parisc_pathname() to conveniently get the textual representation of the hwpath used in sysfs. Inline the remnants of claim_device() into its caller. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> I noticed that some of the STI regions weren't showing up in iomem. Reading the STI spec indicated that all STI devices occupy at least 32MB. So check for STI HPAs and give them 32MB instead of 4kB. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2005-10-22 06:33:38 +04:00
static int for_each_padev(int (*fn)(struct device *, void *), void * data)
{
struct recurse_struct recurse_data = {
.obj = data,
.fn = fn,
};
return device_for_each_child(&root, &recurse_data, descend_children);
}
/**
* match_device - Report whether this driver can handle this device
* @driver: the PA-RISC driver to try
* @dev: the PA-RISC device to try
*/
static int match_device(struct parisc_driver *driver, struct parisc_device *dev)
{
const struct parisc_device_id *ids;
for (ids = driver->id_table; ids->sversion; ids++) {
if ((ids->sversion != SVERSION_ANY_ID) &&
(ids->sversion != dev->id.sversion))
continue;
if ((ids->hw_type != HWTYPE_ANY_ID) &&
(ids->hw_type != dev->id.hw_type))
continue;
if ((ids->hversion != HVERSION_ANY_ID) &&
(ids->hversion != dev->id.hversion))
continue;
return 1;
}
return 0;
}
static int parisc_driver_probe(struct device *dev)
{
int rc;
struct parisc_device *pa_dev = to_parisc_device(dev);
struct parisc_driver *pa_drv = to_parisc_driver(dev->driver);
rc = pa_drv->probe(pa_dev);
[PARISC] Convert parisc_device tree to use struct device klists Fix parse_tree_node. much more needs to be done to fix this file. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Make drivers.c compile based on a patch from Pat Mochel. From: Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Fix drivers.c to create new device tree nodes when no match is found. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Do a proper depth-first search returning parents before children, using the new klist infrastructure. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Fixed parisc_device traversal so that pdc_stable works again Fixed check_dev so it doesn't dereference a parisc_device until it has verified the bus type Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Convert pa_dev->hpa from an unsigned long to a struct resource. Use insert_resource() instead of request_mem_region(). Request resources at bus walk time instead of driver probe time. Don't release the resources as we don't have any hotplug parisc_device support yet. Add parisc_pathname() to conveniently get the textual representation of the hwpath used in sysfs. Inline the remnants of claim_device() into its caller. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> I noticed that some of the STI regions weren't showing up in iomem. Reading the STI spec indicated that all STI devices occupy at least 32MB. So check for STI HPAs and give them 32MB instead of 4kB. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2005-10-22 06:33:38 +04:00
if (!rc)
pa_dev->driver = pa_drv;
return rc;
}
static int parisc_driver_remove(struct device *dev)
{
struct parisc_device *pa_dev = to_parisc_device(dev);
struct parisc_driver *pa_drv = to_parisc_driver(dev->driver);
if (pa_drv->remove)
pa_drv->remove(pa_dev);
return 0;
}
/**
* register_parisc_driver - Register this driver if it can handle a device
* @driver: the PA-RISC driver to try
*/
int register_parisc_driver(struct parisc_driver *driver)
{
/* FIXME: we need this because apparently the sti
* driver can be registered twice */
if(driver->drv.name) {
printk(KERN_WARNING
"BUG: skipping previously registered driver %s\n",
driver->name);
return 1;
}
if (!driver->probe) {
printk(KERN_WARNING
"BUG: driver %s has no probe routine\n",
driver->name);
return 1;
}
driver->drv.bus = &parisc_bus_type;
/* We install our own probe and remove routines */
WARN_ON(driver->drv.probe != NULL);
WARN_ON(driver->drv.remove != NULL);
driver->drv.probe = parisc_driver_probe;
driver->drv.remove = parisc_driver_remove;
driver->drv.name = driver->name;
return driver_register(&driver->drv);
}
EXPORT_SYMBOL(register_parisc_driver);
[PARISC] Convert parisc_device tree to use struct device klists Fix parse_tree_node. much more needs to be done to fix this file. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Make drivers.c compile based on a patch from Pat Mochel. From: Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Fix drivers.c to create new device tree nodes when no match is found. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Do a proper depth-first search returning parents before children, using the new klist infrastructure. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Fixed parisc_device traversal so that pdc_stable works again Fixed check_dev so it doesn't dereference a parisc_device until it has verified the bus type Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Convert pa_dev->hpa from an unsigned long to a struct resource. Use insert_resource() instead of request_mem_region(). Request resources at bus walk time instead of driver probe time. Don't release the resources as we don't have any hotplug parisc_device support yet. Add parisc_pathname() to conveniently get the textual representation of the hwpath used in sysfs. Inline the remnants of claim_device() into its caller. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> I noticed that some of the STI regions weren't showing up in iomem. Reading the STI spec indicated that all STI devices occupy at least 32MB. So check for STI HPAs and give them 32MB instead of 4kB. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2005-10-22 06:33:38 +04:00
struct match_count {
struct parisc_driver * driver;
int count;
};
static int match_and_count(struct device * dev, void * data)
{
struct match_count * m = data;
struct parisc_device * pdev = to_parisc_device(dev);
if (check_dev(dev)) {
if (match_device(m->driver, pdev))
m->count++;
}
return 0;
}
/**
* count_parisc_driver - count # of devices this driver would match
* @driver: the PA-RISC driver to try
*
* Use by IOMMU support to "guess" the right size IOPdir.
* Formula is something like memsize/(num_iommu * entry_size).
*/
int count_parisc_driver(struct parisc_driver *driver)
{
[PARISC] Convert parisc_device tree to use struct device klists Fix parse_tree_node. much more needs to be done to fix this file. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Make drivers.c compile based on a patch from Pat Mochel. From: Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Fix drivers.c to create new device tree nodes when no match is found. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Do a proper depth-first search returning parents before children, using the new klist infrastructure. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Fixed parisc_device traversal so that pdc_stable works again Fixed check_dev so it doesn't dereference a parisc_device until it has verified the bus type Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Convert pa_dev->hpa from an unsigned long to a struct resource. Use insert_resource() instead of request_mem_region(). Request resources at bus walk time instead of driver probe time. Don't release the resources as we don't have any hotplug parisc_device support yet. Add parisc_pathname() to conveniently get the textual representation of the hwpath used in sysfs. Inline the remnants of claim_device() into its caller. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> I noticed that some of the STI regions weren't showing up in iomem. Reading the STI spec indicated that all STI devices occupy at least 32MB. So check for STI HPAs and give them 32MB instead of 4kB. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2005-10-22 06:33:38 +04:00
struct match_count m = {
.driver = driver,
.count = 0,
};
[PARISC] Convert parisc_device tree to use struct device klists Fix parse_tree_node. much more needs to be done to fix this file. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Make drivers.c compile based on a patch from Pat Mochel. From: Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Fix drivers.c to create new device tree nodes when no match is found. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Do a proper depth-first search returning parents before children, using the new klist infrastructure. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Fixed parisc_device traversal so that pdc_stable works again Fixed check_dev so it doesn't dereference a parisc_device until it has verified the bus type Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Convert pa_dev->hpa from an unsigned long to a struct resource. Use insert_resource() instead of request_mem_region(). Request resources at bus walk time instead of driver probe time. Don't release the resources as we don't have any hotplug parisc_device support yet. Add parisc_pathname() to conveniently get the textual representation of the hwpath used in sysfs. Inline the remnants of claim_device() into its caller. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> I noticed that some of the STI regions weren't showing up in iomem. Reading the STI spec indicated that all STI devices occupy at least 32MB. So check for STI HPAs and give them 32MB instead of 4kB. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2005-10-22 06:33:38 +04:00
for_each_padev(match_and_count, &m);
[PARISC] Convert parisc_device tree to use struct device klists Fix parse_tree_node. much more needs to be done to fix this file. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Make drivers.c compile based on a patch from Pat Mochel. From: Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Fix drivers.c to create new device tree nodes when no match is found. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Do a proper depth-first search returning parents before children, using the new klist infrastructure. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Fixed parisc_device traversal so that pdc_stable works again Fixed check_dev so it doesn't dereference a parisc_device until it has verified the bus type Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Convert pa_dev->hpa from an unsigned long to a struct resource. Use insert_resource() instead of request_mem_region(). Request resources at bus walk time instead of driver probe time. Don't release the resources as we don't have any hotplug parisc_device support yet. Add parisc_pathname() to conveniently get the textual representation of the hwpath used in sysfs. Inline the remnants of claim_device() into its caller. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> I noticed that some of the STI regions weren't showing up in iomem. Reading the STI spec indicated that all STI devices occupy at least 32MB. So check for STI HPAs and give them 32MB instead of 4kB. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2005-10-22 06:33:38 +04:00
return m.count;
}
/**
* unregister_parisc_driver - Unregister this driver from the list of drivers
* @driver: the PA-RISC driver to unregister
*/
int unregister_parisc_driver(struct parisc_driver *driver)
{
driver_unregister(&driver->drv);
return 0;
}
EXPORT_SYMBOL(unregister_parisc_driver);
[PARISC] Convert parisc_device tree to use struct device klists Fix parse_tree_node. much more needs to be done to fix this file. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Make drivers.c compile based on a patch from Pat Mochel. From: Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Fix drivers.c to create new device tree nodes when no match is found. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Do a proper depth-first search returning parents before children, using the new klist infrastructure. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Fixed parisc_device traversal so that pdc_stable works again Fixed check_dev so it doesn't dereference a parisc_device until it has verified the bus type Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Convert pa_dev->hpa from an unsigned long to a struct resource. Use insert_resource() instead of request_mem_region(). Request resources at bus walk time instead of driver probe time. Don't release the resources as we don't have any hotplug parisc_device support yet. Add parisc_pathname() to conveniently get the textual representation of the hwpath used in sysfs. Inline the remnants of claim_device() into its caller. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> I noticed that some of the STI regions weren't showing up in iomem. Reading the STI spec indicated that all STI devices occupy at least 32MB. So check for STI HPAs and give them 32MB instead of 4kB. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2005-10-22 06:33:38 +04:00
struct find_data {
unsigned long hpa;
struct parisc_device * dev;
};
static int find_device(struct device * dev, void * data)
{
[PARISC] Convert parisc_device tree to use struct device klists Fix parse_tree_node. much more needs to be done to fix this file. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Make drivers.c compile based on a patch from Pat Mochel. From: Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Fix drivers.c to create new device tree nodes when no match is found. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Do a proper depth-first search returning parents before children, using the new klist infrastructure. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Fixed parisc_device traversal so that pdc_stable works again Fixed check_dev so it doesn't dereference a parisc_device until it has verified the bus type Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Convert pa_dev->hpa from an unsigned long to a struct resource. Use insert_resource() instead of request_mem_region(). Request resources at bus walk time instead of driver probe time. Don't release the resources as we don't have any hotplug parisc_device support yet. Add parisc_pathname() to conveniently get the textual representation of the hwpath used in sysfs. Inline the remnants of claim_device() into its caller. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> I noticed that some of the STI regions weren't showing up in iomem. Reading the STI spec indicated that all STI devices occupy at least 32MB. So check for STI HPAs and give them 32MB instead of 4kB. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2005-10-22 06:33:38 +04:00
struct parisc_device * pdev = to_parisc_device(dev);
struct find_data * d = (struct find_data*)data;
if (check_dev(dev)) {
if (pdev->hpa.start == d->hpa) {
d->dev = pdev;
return 1;
}
}
[PARISC] Convert parisc_device tree to use struct device klists Fix parse_tree_node. much more needs to be done to fix this file. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Make drivers.c compile based on a patch from Pat Mochel. From: Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Fix drivers.c to create new device tree nodes when no match is found. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Do a proper depth-first search returning parents before children, using the new klist infrastructure. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Fixed parisc_device traversal so that pdc_stable works again Fixed check_dev so it doesn't dereference a parisc_device until it has verified the bus type Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Convert pa_dev->hpa from an unsigned long to a struct resource. Use insert_resource() instead of request_mem_region(). Request resources at bus walk time instead of driver probe time. Don't release the resources as we don't have any hotplug parisc_device support yet. Add parisc_pathname() to conveniently get the textual representation of the hwpath used in sysfs. Inline the remnants of claim_device() into its caller. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> I noticed that some of the STI regions weren't showing up in iomem. Reading the STI spec indicated that all STI devices occupy at least 32MB. So check for STI HPAs and give them 32MB instead of 4kB. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2005-10-22 06:33:38 +04:00
return 0;
}
static struct parisc_device *find_device_by_addr(unsigned long hpa)
{
struct find_data d = {
.hpa = hpa,
};
int ret;
ret = for_each_padev(find_device, &d);
return ret ? d.dev : NULL;
}
/**
* find_pa_parent_type - Find a parent of a specific type
* @dev: The device to start searching from
* @type: The device type to search for.
*
* Walks up the device tree looking for a device of the specified type.
* If it finds it, it returns it. If not, it returns NULL.
*/
const struct parisc_device *
find_pa_parent_type(const struct parisc_device *padev, int type)
{
const struct device *dev = &padev->dev;
while (dev != &root) {
struct parisc_device *candidate = to_parisc_device(dev);
if (candidate->id.hw_type == type)
return candidate;
dev = dev->parent;
}
return NULL;
}
#ifdef CONFIG_PCI
static inline int is_pci_dev(struct device *dev)
{
return dev->bus == &pci_bus_type;
}
#else
static inline int is_pci_dev(struct device *dev)
{
return 0;
}
#endif
/*
* get_node_path fills in @path with the firmware path to the device.
* Note that if @node is a parisc device, we don't fill in the 'mod' field.
* This is because both callers pass the parent and fill in the mod
* themselves. If @node is a PCI device, we do fill it in, even though this
* is inconsistent.
*/
static void get_node_path(struct device *dev, struct hardware_path *path)
{
int i = 5;
memset(&path->bc, -1, 6);
if (is_pci_dev(dev)) {
unsigned int devfn = to_pci_dev(dev)->devfn;
path->mod = PCI_FUNC(devfn);
path->bc[i--] = PCI_SLOT(devfn);
dev = dev->parent;
}
while (dev != &root) {
if (is_pci_dev(dev)) {
unsigned int devfn = to_pci_dev(dev)->devfn;
path->bc[i--] = PCI_SLOT(devfn) | (PCI_FUNC(devfn)<< 5);
} else if (dev->bus == &parisc_bus_type) {
path->bc[i--] = to_parisc_device(dev)->hw_path;
}
dev = dev->parent;
}
}
static char *print_hwpath(struct hardware_path *path, char *output)
{
int i;
for (i = 0; i < 6; i++) {
if (path->bc[i] == -1)
continue;
output += sprintf(output, "%u/", (unsigned char) path->bc[i]);
}
output += sprintf(output, "%u", (unsigned char) path->mod);
return output;
}
/**
* print_pa_hwpath - Returns hardware path for PA devices
* dev: The device to return the path for
* output: Pointer to a previously-allocated array to place the path in.
*
* This function fills in the output array with a human-readable path
* to a PA device. This string is compatible with that used by PDC, and
* may be printed on the outside of the box.
*/
char *print_pa_hwpath(struct parisc_device *dev, char *output)
{
struct hardware_path path;
get_node_path(dev->dev.parent, &path);
path.mod = dev->hw_path;
return print_hwpath(&path, output);
}
EXPORT_SYMBOL(print_pa_hwpath);
#if defined(CONFIG_PCI) || defined(CONFIG_ISA)
/**
* get_pci_node_path - Determines the hardware path for a PCI device
* @pdev: The device to return the path for
* @path: Pointer to a previously-allocated array to place the path in.
*
* This function fills in the hardware_path structure with the route to
* the specified PCI device. This structure is suitable for passing to
* PDC calls.
*/
void get_pci_node_path(struct pci_dev *pdev, struct hardware_path *path)
{
get_node_path(&pdev->dev, path);
}
EXPORT_SYMBOL(get_pci_node_path);
/**
* print_pci_hwpath - Returns hardware path for PCI devices
* dev: The device to return the path for
* output: Pointer to a previously-allocated array to place the path in.
*
* This function fills in the output array with a human-readable path
* to a PCI device. This string is compatible with that used by PDC, and
* may be printed on the outside of the box.
*/
char *print_pci_hwpath(struct pci_dev *dev, char *output)
{
struct hardware_path path;
get_pci_node_path(dev, &path);
return print_hwpath(&path, output);
}
EXPORT_SYMBOL(print_pci_hwpath);
#endif /* defined(CONFIG_PCI) || defined(CONFIG_ISA) */
static void setup_bus_id(struct parisc_device *padev)
{
struct hardware_path path;
char *output = padev->dev.bus_id;
int i;
get_node_path(padev->dev.parent, &path);
for (i = 0; i < 6; i++) {
if (path.bc[i] == -1)
continue;
output += sprintf(output, "%u:", (unsigned char) path.bc[i]);
}
sprintf(output, "%u", (unsigned char) padev->hw_path);
}
struct parisc_device * create_tree_node(char id, struct device *parent)
{
struct parisc_device *dev = kmalloc(sizeof(*dev), GFP_KERNEL);
if (!dev)
return NULL;
memset(dev, 0, sizeof(*dev));
dev->hw_path = id;
dev->id.hw_type = HPHW_FAULTY;
dev->dev.parent = parent;
setup_bus_id(dev);
dev->dev.bus = &parisc_bus_type;
dev->dma_mask = 0xffffffffUL; /* PARISC devices are 32-bit */
/* make the generic dma mask a pointer to the parisc one */
dev->dev.dma_mask = &dev->dma_mask;
dev->dev.coherent_dma_mask = dev->dma_mask;
device_register(&dev->dev);
return dev;
}
[PARISC] Convert parisc_device tree to use struct device klists Fix parse_tree_node. much more needs to be done to fix this file. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Make drivers.c compile based on a patch from Pat Mochel. From: Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Fix drivers.c to create new device tree nodes when no match is found. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Do a proper depth-first search returning parents before children, using the new klist infrastructure. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Fixed parisc_device traversal so that pdc_stable works again Fixed check_dev so it doesn't dereference a parisc_device until it has verified the bus type Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Convert pa_dev->hpa from an unsigned long to a struct resource. Use insert_resource() instead of request_mem_region(). Request resources at bus walk time instead of driver probe time. Don't release the resources as we don't have any hotplug parisc_device support yet. Add parisc_pathname() to conveniently get the textual representation of the hwpath used in sysfs. Inline the remnants of claim_device() into its caller. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> I noticed that some of the STI regions weren't showing up in iomem. Reading the STI spec indicated that all STI devices occupy at least 32MB. So check for STI HPAs and give them 32MB instead of 4kB. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2005-10-22 06:33:38 +04:00
struct match_id_data {
char id;
struct parisc_device * dev;
};
static int match_by_id(struct device * dev, void * data)
{
struct parisc_device * pdev = to_parisc_device(dev);
struct match_id_data * d = data;
if (pdev->hw_path == d->id) {
d->dev = pdev;
return 1;
}
return 0;
}
/**
* alloc_tree_node - returns a device entry in the iotree
* @parent: the parent node in the tree
* @id: the element of the module path for this entry
*
* Checks all the children of @parent for a matching @id. If none
* found, it allocates a new device and returns it.
*/
static struct parisc_device * alloc_tree_node(struct device *parent, char id)
{
[PARISC] Convert parisc_device tree to use struct device klists Fix parse_tree_node. much more needs to be done to fix this file. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Make drivers.c compile based on a patch from Pat Mochel. From: Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Fix drivers.c to create new device tree nodes when no match is found. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Do a proper depth-first search returning parents before children, using the new klist infrastructure. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Fixed parisc_device traversal so that pdc_stable works again Fixed check_dev so it doesn't dereference a parisc_device until it has verified the bus type Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Convert pa_dev->hpa from an unsigned long to a struct resource. Use insert_resource() instead of request_mem_region(). Request resources at bus walk time instead of driver probe time. Don't release the resources as we don't have any hotplug parisc_device support yet. Add parisc_pathname() to conveniently get the textual representation of the hwpath used in sysfs. Inline the remnants of claim_device() into its caller. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> I noticed that some of the STI regions weren't showing up in iomem. Reading the STI spec indicated that all STI devices occupy at least 32MB. So check for STI HPAs and give them 32MB instead of 4kB. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2005-10-22 06:33:38 +04:00
struct match_id_data d = {
.id = id,
};
if (device_for_each_child(parent, &d, match_by_id))
return d.dev;
else
return create_tree_node(id, parent);
}
static struct parisc_device *create_parisc_device(struct hardware_path *modpath)
{
int i;
struct device *parent = &root;
for (i = 0; i < 6; i++) {
if (modpath->bc[i] == -1)
continue;
parent = &alloc_tree_node(parent, modpath->bc[i])->dev;
}
return alloc_tree_node(parent, modpath->mod);
}
struct parisc_device *
alloc_pa_dev(unsigned long hpa, struct hardware_path *mod_path)
{
int status;
unsigned long bytecnt;
u8 iodc_data[32];
struct parisc_device *dev;
const char *name;
/* Check to make sure this device has not already been added - Ryan */
if (find_device_by_addr(hpa) != NULL)
return NULL;
status = pdc_iodc_read(&bytecnt, hpa, 0, &iodc_data, 32);
if (status != PDC_OK)
return NULL;
dev = create_parisc_device(mod_path);
if (dev->id.hw_type != HPHW_FAULTY) {
printk(KERN_ERR "Two devices have hardware path [%s]. "
"IODC data for second device: "
"%02x%02x%02x%02x%02x%02x\n"
"Rearranging GSC cards sometimes helps\n",
parisc_pathname(dev), iodc_data[0], iodc_data[1],
iodc_data[3], iodc_data[4], iodc_data[5], iodc_data[6]);
return NULL;
}
dev->id.hw_type = iodc_data[3] & 0x1f;
dev->id.hversion = (iodc_data[0] << 4) | ((iodc_data[1] & 0xf0) >> 4);
dev->id.hversion_rev = iodc_data[1] & 0x0f;
dev->id.sversion = ((iodc_data[4] & 0x0f) << 16) |
(iodc_data[5] << 8) | iodc_data[6];
[PARISC] Convert parisc_device tree to use struct device klists Fix parse_tree_node. much more needs to be done to fix this file. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Make drivers.c compile based on a patch from Pat Mochel. From: Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Fix drivers.c to create new device tree nodes when no match is found. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Do a proper depth-first search returning parents before children, using the new klist infrastructure. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Fixed parisc_device traversal so that pdc_stable works again Fixed check_dev so it doesn't dereference a parisc_device until it has verified the bus type Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Convert pa_dev->hpa from an unsigned long to a struct resource. Use insert_resource() instead of request_mem_region(). Request resources at bus walk time instead of driver probe time. Don't release the resources as we don't have any hotplug parisc_device support yet. Add parisc_pathname() to conveniently get the textual representation of the hwpath used in sysfs. Inline the remnants of claim_device() into its caller. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> I noticed that some of the STI regions weren't showing up in iomem. Reading the STI spec indicated that all STI devices occupy at least 32MB. So check for STI HPAs and give them 32MB instead of 4kB. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2005-10-22 06:33:38 +04:00
dev->hpa.name = parisc_pathname(dev);
dev->hpa.start = hpa;
/* This is awkward. The STI spec says that gfx devices may occupy
* 32MB or 64MB. Unfortunately, we don't know how to tell whether
* it's the former or the latter. Assumptions either way can hurt us.
*/
if (hpa == 0xf4000000 || hpa == 0xf8000000) {
dev->hpa.end = hpa + 0x03ffffff;
} else if (hpa == 0xf6000000 || hpa == 0xfa000000) {
[PARISC] Convert parisc_device tree to use struct device klists Fix parse_tree_node. much more needs to be done to fix this file. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Make drivers.c compile based on a patch from Pat Mochel. From: Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Fix drivers.c to create new device tree nodes when no match is found. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Do a proper depth-first search returning parents before children, using the new klist infrastructure. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Fixed parisc_device traversal so that pdc_stable works again Fixed check_dev so it doesn't dereference a parisc_device until it has verified the bus type Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Convert pa_dev->hpa from an unsigned long to a struct resource. Use insert_resource() instead of request_mem_region(). Request resources at bus walk time instead of driver probe time. Don't release the resources as we don't have any hotplug parisc_device support yet. Add parisc_pathname() to conveniently get the textual representation of the hwpath used in sysfs. Inline the remnants of claim_device() into its caller. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> I noticed that some of the STI regions weren't showing up in iomem. Reading the STI spec indicated that all STI devices occupy at least 32MB. So check for STI HPAs and give them 32MB instead of 4kB. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2005-10-22 06:33:38 +04:00
dev->hpa.end = hpa + 0x01ffffff;
} else {
dev->hpa.end = hpa + 0xfff;
}
dev->hpa.flags = IORESOURCE_MEM;
name = parisc_hardware_description(&dev->id);
if (name) {
strlcpy(dev->name, name, sizeof(dev->name));
}
[PARISC] Convert parisc_device tree to use struct device klists Fix parse_tree_node. much more needs to be done to fix this file. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Make drivers.c compile based on a patch from Pat Mochel. From: Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Fix drivers.c to create new device tree nodes when no match is found. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Do a proper depth-first search returning parents before children, using the new klist infrastructure. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Fixed parisc_device traversal so that pdc_stable works again Fixed check_dev so it doesn't dereference a parisc_device until it has verified the bus type Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Convert pa_dev->hpa from an unsigned long to a struct resource. Use insert_resource() instead of request_mem_region(). Request resources at bus walk time instead of driver probe time. Don't release the resources as we don't have any hotplug parisc_device support yet. Add parisc_pathname() to conveniently get the textual representation of the hwpath used in sysfs. Inline the remnants of claim_device() into its caller. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> I noticed that some of the STI regions weren't showing up in iomem. Reading the STI spec indicated that all STI devices occupy at least 32MB. So check for STI HPAs and give them 32MB instead of 4kB. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2005-10-22 06:33:38 +04:00
/* Silently fail things like mouse ports which are subsumed within
* the keyboard controller
*/
if ((hpa & 0xfff) == 0 && insert_resource(&iomem_resource, &dev->hpa))
printk("Unable to claim HPA %lx for device %s\n",
hpa, name);
return dev;
}
static int parisc_generic_match(struct device *dev, struct device_driver *drv)
{
return match_device(to_parisc_driver(drv), to_parisc_device(dev));
}
#define pa_dev_attr(name, field, format_string) \
static ssize_t name##_show(struct device *dev, struct device_attribute *attr, char *buf) \
{ \
struct parisc_device *padev = to_parisc_device(dev); \
return sprintf(buf, format_string, padev->field); \
}
#define pa_dev_attr_id(field, format) pa_dev_attr(field, id.field, format)
pa_dev_attr(irq, irq, "%u\n");
pa_dev_attr_id(hw_type, "0x%02x\n");
pa_dev_attr(rev, id.hversion_rev, "0x%x\n");
pa_dev_attr_id(hversion, "0x%03x\n");
pa_dev_attr_id(sversion, "0x%05x\n");
static struct device_attribute parisc_device_attrs[] = {
__ATTR_RO(irq),
__ATTR_RO(hw_type),
__ATTR_RO(rev),
__ATTR_RO(hversion),
__ATTR_RO(sversion),
__ATTR_NULL,
};
struct bus_type parisc_bus_type = {
.name = "parisc",
.match = parisc_generic_match,
.dev_attrs = parisc_device_attrs,
};
/**
* register_parisc_device - Locate a driver to manage this device.
* @dev: The parisc device.
*
* Search the driver list for a driver that is willing to manage
* this device.
*/
int register_parisc_device(struct parisc_device *dev)
{
if (!dev)
return 0;
if (dev->driver)
return 1;
return 0;
}
/**
* match_pci_device - Matches a pci device against a given hardware path
* entry.
* @dev: the generic device (known to be contained by a pci_dev).
* @index: the current BC index
* @modpath: the hardware path.
* @return: true if the device matches the hardware path.
*/
static int match_pci_device(struct device *dev, int index,
struct hardware_path *modpath)
{
struct pci_dev *pdev = to_pci_dev(dev);
int id;
if (index == 5) {
/* we are at the end of the path, and on the actual device */
unsigned int devfn = pdev->devfn;
return ((modpath->bc[5] == PCI_SLOT(devfn)) &&
(modpath->mod == PCI_FUNC(devfn)));
}
id = PCI_SLOT(pdev->devfn) | (PCI_FUNC(pdev->devfn) << 5);
return (modpath->bc[index] == id);
}
/**
* match_parisc_device - Matches a parisc device against a given hardware
* path entry.
* @dev: the generic device (known to be contained by a parisc_device).
* @index: the current BC index
* @modpath: the hardware path.
* @return: true if the device matches the hardware path.
*/
static int match_parisc_device(struct device *dev, int index,
struct hardware_path *modpath)
{
struct parisc_device *curr = to_parisc_device(dev);
char id = (index == 6) ? modpath->mod : modpath->bc[index];
return (curr->hw_path == id);
}
[PARISC] Convert parisc_device tree to use struct device klists Fix parse_tree_node. much more needs to be done to fix this file. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Make drivers.c compile based on a patch from Pat Mochel. From: Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Fix drivers.c to create new device tree nodes when no match is found. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Do a proper depth-first search returning parents before children, using the new klist infrastructure. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Fixed parisc_device traversal so that pdc_stable works again Fixed check_dev so it doesn't dereference a parisc_device until it has verified the bus type Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Convert pa_dev->hpa from an unsigned long to a struct resource. Use insert_resource() instead of request_mem_region(). Request resources at bus walk time instead of driver probe time. Don't release the resources as we don't have any hotplug parisc_device support yet. Add parisc_pathname() to conveniently get the textual representation of the hwpath used in sysfs. Inline the remnants of claim_device() into its caller. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> I noticed that some of the STI regions weren't showing up in iomem. Reading the STI spec indicated that all STI devices occupy at least 32MB. So check for STI HPAs and give them 32MB instead of 4kB. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2005-10-22 06:33:38 +04:00
struct parse_tree_data {
int index;
struct hardware_path * modpath;
struct device * dev;
};
static int check_parent(struct device * dev, void * data)
{
struct parse_tree_data * d = data;
if (check_dev(dev)) {
if (dev->bus == &parisc_bus_type) {
if (match_parisc_device(dev, d->index, d->modpath))
d->dev = dev;
} else if (is_pci_dev(dev)) {
if (match_pci_device(dev, d->index, d->modpath))
d->dev = dev;
} else if (dev->bus == NULL) {
/* we are on a bus bridge */
struct device *new = parse_tree_node(dev, d->index, d->modpath);
if (new)
d->dev = new;
}
}
return d->dev != NULL;
}
/**
* parse_tree_node - returns a device entry in the iotree
* @parent: the parent node in the tree
* @index: the current BC index
* @modpath: the hardware_path struct to match a device against
* @return: The corresponding device if found, NULL otherwise.
*
* Checks all the children of @parent for a matching @id. If none
* found, it returns NULL.
*/
static struct device *
parse_tree_node(struct device *parent, int index, struct hardware_path *modpath)
{
[PARISC] Convert parisc_device tree to use struct device klists Fix parse_tree_node. much more needs to be done to fix this file. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Make drivers.c compile based on a patch from Pat Mochel. From: Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Fix drivers.c to create new device tree nodes when no match is found. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Do a proper depth-first search returning parents before children, using the new klist infrastructure. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Fixed parisc_device traversal so that pdc_stable works again Fixed check_dev so it doesn't dereference a parisc_device until it has verified the bus type Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Convert pa_dev->hpa from an unsigned long to a struct resource. Use insert_resource() instead of request_mem_region(). Request resources at bus walk time instead of driver probe time. Don't release the resources as we don't have any hotplug parisc_device support yet. Add parisc_pathname() to conveniently get the textual representation of the hwpath used in sysfs. Inline the remnants of claim_device() into its caller. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> I noticed that some of the STI regions weren't showing up in iomem. Reading the STI spec indicated that all STI devices occupy at least 32MB. So check for STI HPAs and give them 32MB instead of 4kB. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2005-10-22 06:33:38 +04:00
struct parse_tree_data d = {
.index = index,
.modpath = modpath,
};
[PARISC] Convert parisc_device tree to use struct device klists Fix parse_tree_node. much more needs to be done to fix this file. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Make drivers.c compile based on a patch from Pat Mochel. From: Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Fix drivers.c to create new device tree nodes when no match is found. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Do a proper depth-first search returning parents before children, using the new klist infrastructure. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Fixed parisc_device traversal so that pdc_stable works again Fixed check_dev so it doesn't dereference a parisc_device until it has verified the bus type Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Convert pa_dev->hpa from an unsigned long to a struct resource. Use insert_resource() instead of request_mem_region(). Request resources at bus walk time instead of driver probe time. Don't release the resources as we don't have any hotplug parisc_device support yet. Add parisc_pathname() to conveniently get the textual representation of the hwpath used in sysfs. Inline the remnants of claim_device() into its caller. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> I noticed that some of the STI regions weren't showing up in iomem. Reading the STI spec indicated that all STI devices occupy at least 32MB. So check for STI HPAs and give them 32MB instead of 4kB. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2005-10-22 06:33:38 +04:00
struct recurse_struct recurse_data = {
.obj = &d,
.fn = check_parent,
};
device_for_each_child(parent, &recurse_data, descend_children);
return d.dev;
}
/**
* hwpath_to_device - Finds the generic device corresponding to a given hardware path.
* @modpath: the hardware path.
* @return: The target device, NULL if not found.
*/
struct device *hwpath_to_device(struct hardware_path *modpath)
{
int i;
struct device *parent = &root;
for (i = 0; i < 6; i++) {
if (modpath->bc[i] == -1)
continue;
parent = parse_tree_node(parent, i, modpath);
if (!parent)
return NULL;
}
if (is_pci_dev(parent)) /* pci devices already parse MOD */
return parent;
else
return parse_tree_node(parent, 6, modpath);
}
EXPORT_SYMBOL(hwpath_to_device);
/**
* device_to_hwpath - Populates the hwpath corresponding to the given device.
* @param dev the target device
* @param path pointer to a previously allocated hwpath struct to be filled in
*/
void device_to_hwpath(struct device *dev, struct hardware_path *path)
{
struct parisc_device *padev;
if (dev->bus == &parisc_bus_type) {
padev = to_parisc_device(dev);
get_node_path(dev->parent, path);
path->mod = padev->hw_path;
} else if (is_pci_dev(dev)) {
get_node_path(dev, path);
}
}
EXPORT_SYMBOL(device_to_hwpath);
#define BC_PORT_MASK 0x8
#define BC_LOWER_PORT 0x8
#define BUS_CONVERTER(dev) \
((dev->id.hw_type == HPHW_IOA) || (dev->id.hw_type == HPHW_BCPORT))
#define IS_LOWER_PORT(dev) \
[PARISC] Convert parisc_device tree to use struct device klists Fix parse_tree_node. much more needs to be done to fix this file. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Make drivers.c compile based on a patch from Pat Mochel. From: Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Fix drivers.c to create new device tree nodes when no match is found. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Do a proper depth-first search returning parents before children, using the new klist infrastructure. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Fixed parisc_device traversal so that pdc_stable works again Fixed check_dev so it doesn't dereference a parisc_device until it has verified the bus type Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Convert pa_dev->hpa from an unsigned long to a struct resource. Use insert_resource() instead of request_mem_region(). Request resources at bus walk time instead of driver probe time. Don't release the resources as we don't have any hotplug parisc_device support yet. Add parisc_pathname() to conveniently get the textual representation of the hwpath used in sysfs. Inline the remnants of claim_device() into its caller. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> I noticed that some of the STI regions weren't showing up in iomem. Reading the STI spec indicated that all STI devices occupy at least 32MB. So check for STI HPAs and give them 32MB instead of 4kB. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2005-10-22 06:33:38 +04:00
((gsc_readl(dev->hpa.start + offsetof(struct bc_module, io_status)) \
& BC_PORT_MASK) == BC_LOWER_PORT)
#define MAX_NATIVE_DEVICES 64
#define NATIVE_DEVICE_OFFSET 0x1000
#define FLEX_MASK F_EXTEND(0xfffc0000)
#define IO_IO_LOW offsetof(struct bc_module, io_io_low)
#define IO_IO_HIGH offsetof(struct bc_module, io_io_high)
[PARISC] Convert parisc_device tree to use struct device klists Fix parse_tree_node. much more needs to be done to fix this file. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Make drivers.c compile based on a patch from Pat Mochel. From: Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Fix drivers.c to create new device tree nodes when no match is found. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Do a proper depth-first search returning parents before children, using the new klist infrastructure. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Fixed parisc_device traversal so that pdc_stable works again Fixed check_dev so it doesn't dereference a parisc_device until it has verified the bus type Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Convert pa_dev->hpa from an unsigned long to a struct resource. Use insert_resource() instead of request_mem_region(). Request resources at bus walk time instead of driver probe time. Don't release the resources as we don't have any hotplug parisc_device support yet. Add parisc_pathname() to conveniently get the textual representation of the hwpath used in sysfs. Inline the remnants of claim_device() into its caller. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> I noticed that some of the STI regions weren't showing up in iomem. Reading the STI spec indicated that all STI devices occupy at least 32MB. So check for STI HPAs and give them 32MB instead of 4kB. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2005-10-22 06:33:38 +04:00
#define READ_IO_IO_LOW(dev) (unsigned long)(signed int)gsc_readl(dev->hpa.start + IO_IO_LOW)
#define READ_IO_IO_HIGH(dev) (unsigned long)(signed int)gsc_readl(dev->hpa.start + IO_IO_HIGH)
static void walk_native_bus(unsigned long io_io_low, unsigned long io_io_high,
struct device *parent);
void walk_lower_bus(struct parisc_device *dev)
{
unsigned long io_io_low, io_io_high;
[PARISC] Convert parisc_device tree to use struct device klists Fix parse_tree_node. much more needs to be done to fix this file. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Make drivers.c compile based on a patch from Pat Mochel. From: Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Fix drivers.c to create new device tree nodes when no match is found. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Do a proper depth-first search returning parents before children, using the new klist infrastructure. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Fixed parisc_device traversal so that pdc_stable works again Fixed check_dev so it doesn't dereference a parisc_device until it has verified the bus type Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Convert pa_dev->hpa from an unsigned long to a struct resource. Use insert_resource() instead of request_mem_region(). Request resources at bus walk time instead of driver probe time. Don't release the resources as we don't have any hotplug parisc_device support yet. Add parisc_pathname() to conveniently get the textual representation of the hwpath used in sysfs. Inline the remnants of claim_device() into its caller. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> I noticed that some of the STI regions weren't showing up in iomem. Reading the STI spec indicated that all STI devices occupy at least 32MB. So check for STI HPAs and give them 32MB instead of 4kB. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2005-10-22 06:33:38 +04:00
if (!BUS_CONVERTER(dev) || IS_LOWER_PORT(dev))
return;
[PARISC] Convert parisc_device tree to use struct device klists Fix parse_tree_node. much more needs to be done to fix this file. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Make drivers.c compile based on a patch from Pat Mochel. From: Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Fix drivers.c to create new device tree nodes when no match is found. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Do a proper depth-first search returning parents before children, using the new klist infrastructure. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Fixed parisc_device traversal so that pdc_stable works again Fixed check_dev so it doesn't dereference a parisc_device until it has verified the bus type Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Convert pa_dev->hpa from an unsigned long to a struct resource. Use insert_resource() instead of request_mem_region(). Request resources at bus walk time instead of driver probe time. Don't release the resources as we don't have any hotplug parisc_device support yet. Add parisc_pathname() to conveniently get the textual representation of the hwpath used in sysfs. Inline the remnants of claim_device() into its caller. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> I noticed that some of the STI regions weren't showing up in iomem. Reading the STI spec indicated that all STI devices occupy at least 32MB. So check for STI HPAs and give them 32MB instead of 4kB. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2005-10-22 06:33:38 +04:00
if (dev->id.hw_type == HPHW_IOA) {
io_io_low = (unsigned long)(signed int)(READ_IO_IO_LOW(dev) << 16);
io_io_high = io_io_low + MAX_NATIVE_DEVICES * NATIVE_DEVICE_OFFSET;
} else {
io_io_low = (READ_IO_IO_LOW(dev) + ~FLEX_MASK) & FLEX_MASK;
io_io_high = (READ_IO_IO_HIGH(dev)+ ~FLEX_MASK) & FLEX_MASK;
}
walk_native_bus(io_io_low, io_io_high, &dev->dev);
}
/**
* walk_native_bus -- Probe a bus for devices
* @io_io_low: Base address of this bus.
* @io_io_high: Last address of this bus.
* @parent: The parent bus device.
*
* A native bus (eg Runway or GSC) may have up to 64 devices on it,
* spaced at intervals of 0x1000 bytes. PDC may not inform us of these
* devices, so we have to probe for them. Unfortunately, we may find
* devices which are not physically connected (such as extra serial &
* keyboard ports). This problem is not yet solved.
*/
static void walk_native_bus(unsigned long io_io_low, unsigned long io_io_high,
struct device *parent)
{
int i, devices_found = 0;
unsigned long hpa = io_io_low;
struct hardware_path path;
get_node_path(parent, &path);
do {
for(i = 0; i < MAX_NATIVE_DEVICES; i++, hpa += NATIVE_DEVICE_OFFSET) {
struct parisc_device *dev;
/* Was the device already added by Firmware? */
dev = find_device_by_addr(hpa);
if (!dev) {
path.mod = i;
dev = alloc_pa_dev(hpa, &path);
if (!dev)
continue;
register_parisc_device(dev);
devices_found++;
}
walk_lower_bus(dev);
}
} while(!devices_found && hpa < io_io_high);
}
#define CENTRAL_BUS_ADDR F_EXTEND(0xfff80000)
/**
* walk_central_bus - Find devices attached to the central bus
*
* PDC doesn't tell us about all devices in the system. This routine
* finds devices connected to the central bus.
*/
void walk_central_bus(void)
{
walk_native_bus(CENTRAL_BUS_ADDR,
CENTRAL_BUS_ADDR + (MAX_NATIVE_DEVICES * NATIVE_DEVICE_OFFSET),
&root);
}
static void print_parisc_device(struct parisc_device *dev)
{
char hw_path[64];
static int count;
print_pa_hwpath(dev, hw_path);
printk(KERN_INFO "%d. %s at 0x%lx [%s] { %d, 0x%x, 0x%.3x, 0x%.5x }",
[PARISC] Convert parisc_device tree to use struct device klists Fix parse_tree_node. much more needs to be done to fix this file. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Make drivers.c compile based on a patch from Pat Mochel. From: Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Fix drivers.c to create new device tree nodes when no match is found. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Do a proper depth-first search returning parents before children, using the new klist infrastructure. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Fixed parisc_device traversal so that pdc_stable works again Fixed check_dev so it doesn't dereference a parisc_device until it has verified the bus type Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Convert pa_dev->hpa from an unsigned long to a struct resource. Use insert_resource() instead of request_mem_region(). Request resources at bus walk time instead of driver probe time. Don't release the resources as we don't have any hotplug parisc_device support yet. Add parisc_pathname() to conveniently get the textual representation of the hwpath used in sysfs. Inline the remnants of claim_device() into its caller. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> I noticed that some of the STI regions weren't showing up in iomem. Reading the STI spec indicated that all STI devices occupy at least 32MB. So check for STI HPAs and give them 32MB instead of 4kB. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2005-10-22 06:33:38 +04:00
++count, dev->name, dev->hpa.start, hw_path, dev->id.hw_type,
dev->id.hversion_rev, dev->id.hversion, dev->id.sversion);
if (dev->num_addrs) {
int k;
printk(", additional addresses: ");
for (k = 0; k < dev->num_addrs; k++)
printk("0x%lx ", dev->addr[k]);
}
printk("\n");
}
/**
* init_parisc_bus - Some preparation to be done before inventory
*/
void init_parisc_bus(void)
{
bus_register(&parisc_bus_type);
device_register(&root);
get_device(&root);
}
[PARISC] Convert parisc_device tree to use struct device klists Fix parse_tree_node. much more needs to be done to fix this file. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Make drivers.c compile based on a patch from Pat Mochel. From: Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Fix drivers.c to create new device tree nodes when no match is found. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Do a proper depth-first search returning parents before children, using the new klist infrastructure. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Fixed parisc_device traversal so that pdc_stable works again Fixed check_dev so it doesn't dereference a parisc_device until it has verified the bus type Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Convert pa_dev->hpa from an unsigned long to a struct resource. Use insert_resource() instead of request_mem_region(). Request resources at bus walk time instead of driver probe time. Don't release the resources as we don't have any hotplug parisc_device support yet. Add parisc_pathname() to conveniently get the textual representation of the hwpath used in sysfs. Inline the remnants of claim_device() into its caller. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> I noticed that some of the STI regions weren't showing up in iomem. Reading the STI spec indicated that all STI devices occupy at least 32MB. So check for STI HPAs and give them 32MB instead of 4kB. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2005-10-22 06:33:38 +04:00
static int print_one_device(struct device * dev, void * data)
{
struct parisc_device * pdev = to_parisc_device(dev);
if (check_dev(dev))
print_parisc_device(pdev);
return 0;
}
/**
* print_parisc_devices - Print out a list of devices found in this system
*/
void print_parisc_devices(void)
{
[PARISC] Convert parisc_device tree to use struct device klists Fix parse_tree_node. much more needs to be done to fix this file. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Make drivers.c compile based on a patch from Pat Mochel. From: Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Fix drivers.c to create new device tree nodes when no match is found. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Do a proper depth-first search returning parents before children, using the new klist infrastructure. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Fixed parisc_device traversal so that pdc_stable works again Fixed check_dev so it doesn't dereference a parisc_device until it has verified the bus type Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Convert pa_dev->hpa from an unsigned long to a struct resource. Use insert_resource() instead of request_mem_region(). Request resources at bus walk time instead of driver probe time. Don't release the resources as we don't have any hotplug parisc_device support yet. Add parisc_pathname() to conveniently get the textual representation of the hwpath used in sysfs. Inline the remnants of claim_device() into its caller. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> I noticed that some of the STI regions weren't showing up in iomem. Reading the STI spec indicated that all STI devices occupy at least 32MB. So check for STI HPAs and give them 32MB instead of 4kB. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2005-10-22 06:33:38 +04:00
for_each_padev(print_one_device, NULL);
}