#include <asm/parisc-device.h>
/* See comments in include/asm-parisc/pci.h */
-struct hppa_dma_ops *hppa_dma_ops;
+struct hppa_dma_ops *hppa_dma_ops __read_mostly;
EXPORT_SYMBOL(hppa_dma_ops);
static struct device root = {
.bus_id = "parisc",
};
-#define for_each_padev(padev) \
- for (padev = next_dev(&root); padev != NULL; \
- padev = next_dev(&padev->dev))
+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);
-#define check_dev(padev) \
- (padev->id.hw_type != HPHW_FAULTY) ? padev : next_dev(&padev->dev)
+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);
+}
/**
- * next_dev - enumerates registered devices
- * @dev: the previous device returned from next_dev
+ * 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.
*
- * next_dev does a depth-first search of the tree, returning parents
- * before children. Returns NULL when there are no more devices.
+ * This performs a depth-first traversal of the tree, calling the
+ * function passed for each node. It calls the function for parents
+ * before children.
*/
-static struct parisc_device *next_dev(struct device *dev)
-{
- if (!list_empty(&dev->children)) {
- dev = list_to_dev(dev->children.next);
- return check_dev(to_parisc_device(dev));
- }
- while (dev != &root) {
- if (dev->node.next != &dev->parent->children) {
- dev = list_to_dev(dev->node.next);
- return to_parisc_device(dev);
- }
- dev = dev->parent;
- }
-
- return NULL;
+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);
}
/**
return 0;
}
-static void claim_device(struct parisc_driver *driver, struct parisc_device *dev)
-{
- dev->driver = driver;
- request_mem_region(dev->hpa, 0x1000, driver->name);
-}
-
static int parisc_driver_probe(struct device *dev)
{
int rc;
rc = pa_drv->probe(pa_dev);
- if(!rc)
- claim_device(pa_drv, pa_dev);
+ if (!rc)
+ pa_dev->driver = pa_drv;
return rc;
}
struct parisc_driver *pa_drv = to_parisc_driver(dev->driver);
if (pa_drv->remove)
pa_drv->remove(pa_dev);
- release_mem_region(pa_dev->hpa, 0x1000);
return 0;
}
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);
+
+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
*/
int count_parisc_driver(struct parisc_driver *driver)
{
- struct parisc_device *device;
- int cnt = 0;
+ struct match_count m = {
+ .driver = driver,
+ .count = 0,
+ };
- for_each_padev(device) {
- if (match_device(driver, device))
- cnt++;
- }
+ for_each_padev(match_and_count, &m);
- return cnt;
+ return m.count;
}
}
EXPORT_SYMBOL(unregister_parisc_driver);
-static struct parisc_device *find_device_by_addr(unsigned long hpa)
+struct find_data {
+ unsigned long hpa;
+ struct parisc_device * dev;
+};
+
+static int find_device(struct device * dev, void * data)
{
- struct parisc_device *dev;
- for_each_padev(dev) {
- if (dev->hpa == hpa)
- return dev;
+ 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;
+ }
}
- return NULL;
+ 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;
}
/**
struct parisc_device * create_tree_node(char id, struct device *parent)
{
- struct parisc_device *dev = kmalloc(sizeof(*dev), GFP_KERNEL);
+ struct parisc_device *dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (!dev)
return NULL;
- memset(dev, 0, sizeof(*dev));
dev->hw_path = id;
dev->id.hw_type = HPHW_FAULTY;
return dev;
}
+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
*/
static struct parisc_device * alloc_tree_node(struct device *parent, char id)
{
- struct device *dev;
-
- list_for_each_entry(dev, &parent->children, node) {
- struct parisc_device *padev = to_parisc_device(dev);
- if (padev->hw_path == id)
- return padev;
- }
-
- return create_tree_node(id, parent);
+ 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)
dev = create_parisc_device(mod_path);
if (dev->id.hw_type != HPHW_FAULTY) {
- char p[64];
- print_pa_hwpath(dev, p);
- printk("Two devices have hardware path %s. Please file a bug with HP.\n"
- "In the meantime, you could try rearranging your cards.\n", p);
+ 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.hversion_rev = iodc_data[1] & 0x0f;
dev->id.sversion = ((iodc_data[4] & 0x0f) << 16) |
(iodc_data[5] << 8) | iodc_data[6];
- dev->hpa = hpa;
+ 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) {
+ 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));
}
+ /* 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;
}
}
#define pa_dev_attr(name, field, format_string) \
-static ssize_t name##_show(struct device *dev, char *buf) \
+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); \
.name = "parisc",
.match = parisc_generic_match,
.dev_attrs = parisc_device_attrs,
+ .probe = parisc_driver_probe,
+ .remove = parisc_driver_remove,
};
/**
return (curr->hw_path == id);
}
+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
static struct device *
parse_tree_node(struct device *parent, int index, struct hardware_path *modpath)
{
- struct device *device;
-
- list_for_each_entry(device, &parent->children, node) {
- if (device->bus == &parisc_bus_type) {
- if (match_parisc_device(device, index, modpath))
- return device;
- } else if (is_pci_dev(device)) {
- if (match_pci_device(device, index, modpath))
- return device;
- } else if (device->bus == NULL) {
- /* we are on a bus bridge */
- struct device *new = parse_tree_node(device, index, modpath);
- if (new)
- return new;
- }
- }
+ struct parse_tree_data d = {
+ .index = index,
+ .modpath = modpath,
+ };
- return NULL;
+ struct recurse_struct recurse_data = {
+ .obj = &d,
+ .fn = check_parent,
+ };
+
+ device_for_each_child(parent, &recurse_data, descend_children);
+ return d.dev;
}
/**
((dev->id.hw_type == HPHW_IOA) || (dev->id.hw_type == HPHW_BCPORT))
#define IS_LOWER_PORT(dev) \
- ((gsc_readl(dev->hpa + offsetof(struct bc_module, io_status)) \
+ ((gsc_readl(dev->hpa.start + offsetof(struct bc_module, io_status)) \
& BC_PORT_MASK) == BC_LOWER_PORT)
#define MAX_NATIVE_DEVICES 64
#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)
-#define READ_IO_IO_LOW(dev) (unsigned long)(signed int)gsc_readl(dev->hpa + IO_IO_LOW)
-#define READ_IO_IO_HIGH(dev) (unsigned long)(signed int)gsc_readl(dev->hpa + IO_IO_HIGH)
+#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);
{
unsigned long io_io_low, io_io_high;
- if(!BUS_CONVERTER(dev) || IS_LOWER_PORT(dev))
+ if (!BUS_CONVERTER(dev) || IS_LOWER_PORT(dev))
return;
- if(dev->id.hw_type == HPHW_IOA) {
+ 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 {
print_pa_hwpath(dev, hw_path);
printk(KERN_INFO "%d. %s at 0x%lx [%s] { %d, 0x%x, 0x%.3x, 0x%.5x }",
- ++count, dev->name, dev->hpa, hw_path, dev->id.hw_type,
+ ++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: ");
+ printk(", additional addresses: ");
for (k = 0; k < dev->num_addrs; k++)
printk("0x%lx ", dev->addr[k]);
}
get_device(&root);
}
+
+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)
{
- struct parisc_device *dev;
- for_each_padev(dev) {
- print_parisc_device(dev);
- }
+ for_each_padev(print_one_device, NULL);
}
git://git.onelab.eu / linux-2.6.git / blobdiff