1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Copyright (c) 1999 The Puffin Group
6 * Copyright (c) 2001 Matthew Wilcox for Hewlett Packard
8 * Copyright (c) 2001,2002 Ryan Bradetich
11 * The file handles registering devices and drivers, then matching them.
12 * It's the closest we get to a dating agency.
14 * If you're thinking about modifying this file, here are some gotchas to
16 * - 715/Mirage device paths have a dummy device between Lasi and its children
17 * - The EISA adapter may show up as a sibling or child of Wax
18 * - Dino has an optionally functional serial port. If firmware enables it,
19 * it shows up as a child of Dino. If firmware disables it, the buswalk
20 * finds it and it shows up as a child of Cujo
21 * - Dino has both parisc and pci devices as children
22 * - parisc devices are discovered in a random order, including children
23 * before parents in some cases.
26 #include <linux/slab.h>
27 #include <linux/types.h>
28 #include <linux/kernel.h>
29 #include <linux/pci.h>
30 #include <linux/spinlock.h>
31 #include <linux/string.h>
32 #include <linux/export.h>
33 #include <linux/dma-map-ops.h>
34 #include <asm/hardware.h>
37 #include <asm/parisc-device.h>
38 #include <asm/ropes.h>
40 /* See comments in include/asm-parisc/pci.h */
41 const struct dma_map_ops *hppa_dma_ops __ro_after_init;
42 EXPORT_SYMBOL(hppa_dma_ops);
44 static struct device root = {
45 .init_name = "parisc",
48 static inline int check_dev(struct device *dev)
50 if (dev->bus == &parisc_bus_type) {
51 struct parisc_device *pdev;
52 pdev = to_parisc_device(dev);
53 return pdev->id.hw_type != HPHW_FAULTY;
58 static struct device *
59 parse_tree_node(struct device *parent, int index, struct hardware_path *modpath);
61 struct recurse_struct {
63 int (*fn)(struct device *, void *);
66 static int descend_children(struct device * dev, void * data)
68 struct recurse_struct * recurse_data = (struct recurse_struct *)data;
70 if (recurse_data->fn(dev, recurse_data->obj))
73 return device_for_each_child(dev, recurse_data, descend_children);
77 * for_each_padev - Iterate over all devices in the tree
78 * @fn: Function to call for each device.
79 * @data: Data to pass to the called function.
81 * This performs a depth-first traversal of the tree, calling the
82 * function passed for each node. It calls the function for parents
86 static int for_each_padev(int (*fn)(struct device *, void *), void * data)
88 struct recurse_struct recurse_data = {
92 return device_for_each_child(&root, &recurse_data, descend_children);
96 * match_device - Report whether this driver can handle this device
97 * @driver: the PA-RISC driver to try
98 * @dev: the PA-RISC device to try
100 static int match_device(const struct parisc_driver *driver, struct parisc_device *dev)
102 const struct parisc_device_id *ids;
104 for (ids = driver->id_table; ids->sversion; ids++) {
105 if ((ids->sversion != SVERSION_ANY_ID) &&
106 (ids->sversion != dev->id.sversion))
109 if ((ids->hw_type != HWTYPE_ANY_ID) &&
110 (ids->hw_type != dev->id.hw_type))
113 if ((ids->hversion != HVERSION_ANY_ID) &&
114 (ids->hversion != dev->id.hversion))
122 static int parisc_driver_probe(struct device *dev)
125 struct parisc_device *pa_dev = to_parisc_device(dev);
126 struct parisc_driver *pa_drv = to_parisc_driver(dev->driver);
128 rc = pa_drv->probe(pa_dev);
131 pa_dev->driver = pa_drv;
136 static void __exit parisc_driver_remove(struct device *dev)
138 struct parisc_device *pa_dev = to_parisc_device(dev);
139 struct parisc_driver *pa_drv = to_parisc_driver(dev->driver);
142 pa_drv->remove(pa_dev);
147 * register_parisc_driver - Register this driver if it can handle a device
148 * @driver: the PA-RISC driver to try
150 int register_parisc_driver(struct parisc_driver *driver)
152 /* FIXME: we need this because apparently the sti
153 * driver can be registered twice */
154 if (driver->drv.name) {
155 pr_warn("BUG: skipping previously registered driver %s\n",
160 if (!driver->probe) {
161 pr_warn("BUG: driver %s has no probe routine\n", driver->name);
165 driver->drv.bus = &parisc_bus_type;
167 /* We install our own probe and remove routines */
168 WARN_ON(driver->drv.probe != NULL);
169 WARN_ON(driver->drv.remove != NULL);
171 driver->drv.name = driver->name;
173 return driver_register(&driver->drv);
175 EXPORT_SYMBOL(register_parisc_driver);
179 struct parisc_driver * driver;
183 static int match_and_count(struct device * dev, void * data)
185 struct match_count * m = data;
186 struct parisc_device * pdev = to_parisc_device(dev);
188 if (check_dev(dev)) {
189 if (match_device(m->driver, pdev))
196 * count_parisc_driver - count # of devices this driver would match
197 * @driver: the PA-RISC driver to try
199 * Use by IOMMU support to "guess" the right size IOPdir.
200 * Formula is something like memsize/(num_iommu * entry_size).
202 int __init count_parisc_driver(struct parisc_driver *driver)
204 struct match_count m = {
209 for_each_padev(match_and_count, &m);
217 * unregister_parisc_driver - Unregister this driver from the list of drivers
218 * @driver: the PA-RISC driver to unregister
220 int unregister_parisc_driver(struct parisc_driver *driver)
222 driver_unregister(&driver->drv);
225 EXPORT_SYMBOL(unregister_parisc_driver);
229 struct parisc_device * dev;
232 static int find_device(struct device * dev, void * data)
234 struct parisc_device * pdev = to_parisc_device(dev);
235 struct find_data * d = (struct find_data*)data;
237 if (check_dev(dev)) {
238 if (pdev->hpa.start == d->hpa) {
246 static struct parisc_device *find_device_by_addr(unsigned long hpa)
248 struct find_data d = {
253 ret = for_each_padev(find_device, &d);
254 return ret ? d.dev : NULL;
257 static int __init is_IKE_device(struct device *dev, void *data)
259 struct parisc_device *pdev = to_parisc_device(dev);
263 if (pdev->id.hw_type != HPHW_BCPORT)
266 (pdev->id.hversion == REO_MERCED_PORT) ||
267 (pdev->id.hversion == REOG_MERCED_PORT)) {
273 int __init machine_has_merced_bus(void)
277 ret = for_each_padev(is_IKE_device, NULL);
282 * find_pa_parent_type - Find a parent of a specific type
283 * @padev: The device to start searching from
284 * @type: The device type to search for.
286 * Walks up the device tree looking for a device of the specified type.
287 * If it finds it, it returns it. If not, it returns NULL.
289 const struct parisc_device *
290 find_pa_parent_type(const struct parisc_device *padev, int type)
292 const struct device *dev = &padev->dev;
293 while (dev != &root) {
294 struct parisc_device *candidate = to_parisc_device(dev);
295 if (candidate->id.hw_type == type)
304 * get_node_path fills in @path with the firmware path to the device.
305 * Note that if @node is a parisc device, we don't fill in the 'mod' field.
306 * This is because both callers pass the parent and fill in the mod
307 * themselves. If @node is a PCI device, we do fill it in, even though this
310 static void get_node_path(struct device *dev, struct hardware_path *path)
313 memset(&path->bc, -1, 6);
315 if (dev_is_pci(dev)) {
316 unsigned int devfn = to_pci_dev(dev)->devfn;
317 path->mod = PCI_FUNC(devfn);
318 path->bc[i--] = PCI_SLOT(devfn);
322 while (dev != &root) {
323 if (dev_is_pci(dev)) {
324 unsigned int devfn = to_pci_dev(dev)->devfn;
325 path->bc[i--] = PCI_SLOT(devfn) | (PCI_FUNC(devfn)<< 5);
326 } else if (dev->bus == &parisc_bus_type) {
327 path->bc[i--] = to_parisc_device(dev)->hw_path;
333 static char *print_hwpath(struct hardware_path *path, char *output)
336 for (i = 0; i < 6; i++) {
337 if (path->bc[i] == -1)
339 output += sprintf(output, "%u/", (unsigned char) path->bc[i]);
341 output += sprintf(output, "%u", (unsigned char) path->mod);
346 * print_pa_hwpath - Returns hardware path for PA devices
347 * @dev: The device to return the path for
348 * @output: Pointer to a previously-allocated array to place the path in.
350 * This function fills in the output array with a human-readable path
351 * to a PA device. This string is compatible with that used by PDC, and
352 * may be printed on the outside of the box.
354 char *print_pa_hwpath(struct parisc_device *dev, char *output)
356 struct hardware_path path;
358 get_node_path(dev->dev.parent, &path);
359 path.mod = dev->hw_path;
360 return print_hwpath(&path, output);
362 EXPORT_SYMBOL(print_pa_hwpath);
364 #if defined(CONFIG_PCI) || defined(CONFIG_ISA)
366 * get_pci_node_path - Determines the hardware path for a PCI device
367 * @pdev: The device to return the path for
368 * @path: Pointer to a previously-allocated array to place the path in.
370 * This function fills in the hardware_path structure with the route to
371 * the specified PCI device. This structure is suitable for passing to
374 void get_pci_node_path(struct pci_dev *pdev, struct hardware_path *path)
376 get_node_path(&pdev->dev, path);
378 EXPORT_SYMBOL(get_pci_node_path);
381 * print_pci_hwpath - Returns hardware path for PCI devices
382 * @dev: The device to return the path for
383 * @output: Pointer to a previously-allocated array to place the path in.
385 * This function fills in the output array with a human-readable path
386 * to a PCI device. This string is compatible with that used by PDC, and
387 * may be printed on the outside of the box.
389 char *print_pci_hwpath(struct pci_dev *dev, char *output)
391 struct hardware_path path;
393 get_pci_node_path(dev, &path);
394 return print_hwpath(&path, output);
396 EXPORT_SYMBOL(print_pci_hwpath);
398 #endif /* defined(CONFIG_PCI) || defined(CONFIG_ISA) */
400 static void setup_bus_id(struct parisc_device *padev)
402 struct hardware_path path;
407 get_node_path(padev->dev.parent, &path);
409 for (i = 0; i < 6; i++) {
410 if (path.bc[i] == -1)
412 output += sprintf(output, "%u:", (unsigned char) path.bc[i]);
414 sprintf(output, "%u", (unsigned char) padev->hw_path);
415 dev_set_name(&padev->dev, name);
418 static struct parisc_device * __init create_tree_node(char id,
419 struct device *parent)
421 struct parisc_device *dev = kzalloc(sizeof(*dev), GFP_KERNEL);
426 dev->id.hw_type = HPHW_FAULTY;
428 dev->dev.parent = parent;
431 dev->dev.bus = &parisc_bus_type;
432 dev->dma_mask = 0xffffffffUL; /* PARISC devices are 32-bit */
434 /* make the generic dma mask a pointer to the parisc one */
435 dev->dev.dma_mask = &dev->dma_mask;
436 dev->dev.coherent_dma_mask = dev->dma_mask;
437 if (device_register(&dev->dev)) {
445 struct match_id_data {
447 struct parisc_device * dev;
450 static int match_by_id(struct device * dev, void * data)
452 struct parisc_device * pdev = to_parisc_device(dev);
453 struct match_id_data * d = data;
455 if (pdev->hw_path == d->id) {
463 * alloc_tree_node - returns a device entry in the iotree
464 * @parent: the parent node in the tree
465 * @id: the element of the module path for this entry
467 * Checks all the children of @parent for a matching @id. If none
468 * found, it allocates a new device and returns it.
470 static struct parisc_device * __init alloc_tree_node(
471 struct device *parent, char id)
473 struct match_id_data d = {
476 if (device_for_each_child(parent, &d, match_by_id))
479 return create_tree_node(id, parent);
482 static struct parisc_device *create_parisc_device(struct hardware_path *modpath)
485 struct device *parent = &root;
486 for (i = 0; i < 6; i++) {
487 if (modpath->bc[i] == -1)
489 parent = &alloc_tree_node(parent, modpath->bc[i])->dev;
491 return alloc_tree_node(parent, modpath->mod);
494 struct parisc_device * __init
495 alloc_pa_dev(unsigned long hpa, struct hardware_path *mod_path)
498 unsigned long bytecnt;
500 struct parisc_device *dev;
503 /* Check to make sure this device has not already been added - Ryan */
504 if (find_device_by_addr(hpa) != NULL)
507 status = pdc_iodc_read(&bytecnt, hpa, 0, &iodc_data, 32);
508 if (status != PDC_OK)
511 dev = create_parisc_device(mod_path);
512 if (dev->id.hw_type != HPHW_FAULTY) {
513 pr_err("Two devices have hardware path [%s]. IODC data for second device: %7phN\n"
514 "Rearranging GSC cards sometimes helps\n",
515 parisc_pathname(dev), iodc_data);
519 dev->id.hw_type = iodc_data[3] & 0x1f;
520 dev->id.hversion = (iodc_data[0] << 4) | ((iodc_data[1] & 0xf0) >> 4);
521 dev->id.hversion_rev = iodc_data[1] & 0x0f;
522 dev->id.sversion = ((iodc_data[4] & 0x0f) << 16) |
523 (iodc_data[5] << 8) | iodc_data[6];
524 dev->hpa.start = hpa;
525 /* This is awkward. The STI spec says that gfx devices may occupy
526 * 32MB or 64MB. Unfortunately, we don't know how to tell whether
527 * it's the former or the latter. Assumptions either way can hurt us.
529 if (hpa == 0xf4000000 || hpa == 0xf8000000) {
530 dev->hpa.end = hpa + 0x03ffffff;
531 } else if (hpa == 0xf6000000 || hpa == 0xfa000000) {
532 dev->hpa.end = hpa + 0x01ffffff;
534 dev->hpa.end = hpa + 0xfff;
536 dev->hpa.flags = IORESOURCE_MEM;
537 dev->hpa.name = dev->name;
538 name = parisc_hardware_description(&dev->id) ? : "unknown";
539 snprintf(dev->name, sizeof(dev->name), "%s [%s]",
540 name, parisc_pathname(dev));
542 /* Silently fail things like mouse ports which are subsumed within
543 * the keyboard controller
545 if ((hpa & 0xfff) == 0 && insert_resource(&iomem_resource, &dev->hpa))
546 pr_warn("Unable to claim HPA %lx for device %s\n", hpa, name);
551 static int parisc_generic_match(struct device *dev, const struct device_driver *drv)
553 return match_device(to_parisc_driver(drv), to_parisc_device(dev));
556 static ssize_t make_modalias(const struct device *dev, char *buf)
558 const struct parisc_device *padev = to_parisc_device(dev);
559 const struct parisc_device_id *id = &padev->id;
561 return sprintf(buf, "parisc:t%02Xhv%04Xrev%02Xsv%08X\n",
562 (u8)id->hw_type, (u16)id->hversion, (u8)id->hversion_rev,
566 static int parisc_uevent(const struct device *dev, struct kobj_uevent_env *env)
568 const struct parisc_device *padev;
574 padev = to_parisc_device(dev);
578 if (add_uevent_var(env, "PARISC_NAME=%s", padev->name))
581 make_modalias(dev, modalias);
582 if (add_uevent_var(env, "MODALIAS=%s", modalias))
588 #define pa_dev_attr(name, field, format_string) \
589 static ssize_t name##_show(struct device *dev, struct device_attribute *attr, char *buf) \
591 struct parisc_device *padev = to_parisc_device(dev); \
592 return sprintf(buf, format_string, padev->field); \
594 static DEVICE_ATTR_RO(name);
596 #define pa_dev_attr_id(field, format) pa_dev_attr(field, id.field, format)
598 pa_dev_attr(irq, irq, "%u\n");
599 pa_dev_attr_id(hw_type, "0x%02x\n");
600 pa_dev_attr(rev, id.hversion_rev, "0x%x\n");
601 pa_dev_attr_id(hversion, "0x%03x\n");
602 pa_dev_attr_id(sversion, "0x%05x\n");
604 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
606 return make_modalias(dev, buf);
608 static DEVICE_ATTR_RO(modalias);
610 static struct attribute *parisc_device_attrs[] = {
612 &dev_attr_hw_type.attr,
614 &dev_attr_hversion.attr,
615 &dev_attr_sversion.attr,
616 &dev_attr_modalias.attr,
619 ATTRIBUTE_GROUPS(parisc_device);
621 const struct bus_type parisc_bus_type = {
623 .match = parisc_generic_match,
624 .uevent = parisc_uevent,
625 .dev_groups = parisc_device_groups,
626 .probe = parisc_driver_probe,
627 .remove = __exit_p(parisc_driver_remove),
631 * register_parisc_device - Locate a driver to manage this device.
632 * @dev: The parisc device.
634 * Search the driver list for a driver that is willing to manage
637 int __init register_parisc_device(struct parisc_device *dev)
649 * match_pci_device - Matches a pci device against a given hardware path
651 * @dev: the generic device (known to be contained by a pci_dev).
652 * @index: the current BC index
653 * @modpath: the hardware path.
654 * @return: true if the device matches the hardware path.
656 static int match_pci_device(struct device *dev, int index,
657 struct hardware_path *modpath)
659 struct pci_dev *pdev = to_pci_dev(dev);
663 /* we are at the end of the path, and on the actual device */
664 unsigned int devfn = pdev->devfn;
665 return ((modpath->bc[5] == PCI_SLOT(devfn)) &&
666 (modpath->mod == PCI_FUNC(devfn)));
669 /* index might be out of bounds for bc[] */
673 id = PCI_SLOT(pdev->devfn) | (PCI_FUNC(pdev->devfn) << 5);
674 return (modpath->bc[index] == id);
678 * match_parisc_device - Matches a parisc device against a given hardware
680 * @dev: the generic device (known to be contained by a parisc_device).
681 * @index: the current BC index
682 * @modpath: the hardware path.
683 * @return: true if the device matches the hardware path.
685 static int match_parisc_device(struct device *dev, int index,
686 struct hardware_path *modpath)
688 struct parisc_device *curr = to_parisc_device(dev);
689 char id = (index == 6) ? modpath->mod : modpath->bc[index];
691 return (curr->hw_path == id);
694 struct parse_tree_data {
696 struct hardware_path * modpath;
700 static int check_parent(struct device * dev, void * data)
702 struct parse_tree_data * d = data;
704 if (check_dev(dev)) {
705 if (dev->bus == &parisc_bus_type) {
706 if (match_parisc_device(dev, d->index, d->modpath))
708 } else if (dev_is_pci(dev)) {
709 if (match_pci_device(dev, d->index, d->modpath))
711 } else if (dev->bus == NULL) {
712 /* we are on a bus bridge */
713 struct device *new = parse_tree_node(dev, d->index, d->modpath);
718 return d->dev != NULL;
722 * parse_tree_node - returns a device entry in the iotree
723 * @parent: the parent node in the tree
724 * @index: the current BC index
725 * @modpath: the hardware_path struct to match a device against
726 * @return: The corresponding device if found, NULL otherwise.
728 * Checks all the children of @parent for a matching @id. If none
729 * found, it returns NULL.
731 static struct device *
732 parse_tree_node(struct device *parent, int index, struct hardware_path *modpath)
734 struct parse_tree_data d = {
739 struct recurse_struct recurse_data = {
744 if (device_for_each_child(parent, &recurse_data, descend_children))
751 * hwpath_to_device - Finds the generic device corresponding to a given hardware path.
752 * @modpath: the hardware path.
753 * @return: The target device, NULL if not found.
755 struct device *hwpath_to_device(struct hardware_path *modpath)
758 struct device *parent = &root;
759 for (i = 0; i < 6; i++) {
760 if (modpath->bc[i] == -1)
762 parent = parse_tree_node(parent, i, modpath);
766 if (dev_is_pci(parent)) /* pci devices already parse MOD */
769 return parse_tree_node(parent, 6, modpath);
771 EXPORT_SYMBOL(hwpath_to_device);
774 * device_to_hwpath - Populates the hwpath corresponding to the given device.
775 * @dev: the target device
776 * @path: pointer to a previously allocated hwpath struct to be filled in
778 void device_to_hwpath(struct device *dev, struct hardware_path *path)
780 struct parisc_device *padev;
781 if (dev->bus == &parisc_bus_type) {
782 padev = to_parisc_device(dev);
783 get_node_path(dev->parent, path);
784 path->mod = padev->hw_path;
785 } else if (dev_is_pci(dev)) {
786 get_node_path(dev, path);
789 EXPORT_SYMBOL(device_to_hwpath);
791 #define BC_PORT_MASK 0x8
792 #define BC_LOWER_PORT 0x8
794 #define BUS_CONVERTER(dev) \
795 ((dev->id.hw_type == HPHW_IOA) || (dev->id.hw_type == HPHW_BCPORT))
797 #define IS_LOWER_PORT(dev) \
798 ((gsc_readl(dev->hpa.start + offsetof(struct bc_module, io_status)) \
799 & BC_PORT_MASK) == BC_LOWER_PORT)
801 #define MAX_NATIVE_DEVICES 64
802 #define NATIVE_DEVICE_OFFSET 0x1000
804 #define FLEX_MASK F_EXTEND(0xfffc0000)
805 #define IO_IO_LOW offsetof(struct bc_module, io_io_low)
806 #define IO_IO_HIGH offsetof(struct bc_module, io_io_high)
807 #define READ_IO_IO_LOW(dev) (unsigned long)(signed int)gsc_readl(dev->hpa.start + IO_IO_LOW)
808 #define READ_IO_IO_HIGH(dev) (unsigned long)(signed int)gsc_readl(dev->hpa.start + IO_IO_HIGH)
810 static void walk_native_bus(unsigned long io_io_low, unsigned long io_io_high,
811 struct device *parent);
813 static void __init walk_lower_bus(struct parisc_device *dev)
815 unsigned long io_io_low, io_io_high;
817 if (!BUS_CONVERTER(dev) || IS_LOWER_PORT(dev))
820 if (dev->id.hw_type == HPHW_IOA) {
821 io_io_low = (unsigned long)(signed int)(READ_IO_IO_LOW(dev) << 16);
822 io_io_high = io_io_low + MAX_NATIVE_DEVICES * NATIVE_DEVICE_OFFSET;
824 io_io_low = (READ_IO_IO_LOW(dev) + ~FLEX_MASK) & FLEX_MASK;
825 io_io_high = (READ_IO_IO_HIGH(dev)+ ~FLEX_MASK) & FLEX_MASK;
828 walk_native_bus(io_io_low, io_io_high, &dev->dev);
832 * walk_native_bus -- Probe a bus for devices
833 * @io_io_low: Base address of this bus.
834 * @io_io_high: Last address of this bus.
835 * @parent: The parent bus device.
837 * A native bus (eg Runway or GSC) may have up to 64 devices on it,
838 * spaced at intervals of 0x1000 bytes. PDC may not inform us of these
839 * devices, so we have to probe for them. Unfortunately, we may find
840 * devices which are not physically connected (such as extra serial &
841 * keyboard ports). This problem is not yet solved.
843 static void __init walk_native_bus(unsigned long io_io_low,
844 unsigned long io_io_high, struct device *parent)
846 int i, devices_found = 0;
847 unsigned long hpa = io_io_low;
848 struct hardware_path path;
850 get_node_path(parent, &path);
852 for(i = 0; i < MAX_NATIVE_DEVICES; i++, hpa += NATIVE_DEVICE_OFFSET) {
853 struct parisc_device *dev;
855 /* Was the device already added by Firmware? */
856 dev = find_device_by_addr(hpa);
859 dev = alloc_pa_dev(hpa, &path);
863 register_parisc_device(dev);
868 } while(!devices_found && hpa < io_io_high);
871 #define CENTRAL_BUS_ADDR F_EXTEND(0xfff80000)
874 * walk_central_bus - Find devices attached to the central bus
876 * PDC doesn't tell us about all devices in the system. This routine
877 * finds devices connected to the central bus.
879 void __init walk_central_bus(void)
881 walk_native_bus(CENTRAL_BUS_ADDR,
882 CENTRAL_BUS_ADDR + (MAX_NATIVE_DEVICES * NATIVE_DEVICE_OFFSET),
886 static __init void print_parisc_device(struct parisc_device *dev)
888 static int count __initdata;
890 pr_info("%d. %s at %pap { type:%d, hv:%#x, sv:%#x, rev:%#x }",
891 ++count, dev->name, &(dev->hpa.start), dev->id.hw_type,
892 dev->id.hversion, dev->id.sversion, dev->id.hversion_rev);
894 if (dev->num_addrs) {
896 pr_cont(", additional addresses: ");
897 for (k = 0; k < dev->num_addrs; k++)
898 pr_cont("0x%lx ", dev->addr[k]);
904 * init_parisc_bus - Some preparation to be done before inventory
906 void __init init_parisc_bus(void)
908 if (bus_register(&parisc_bus_type))
909 panic("Could not register PA-RISC bus type\n");
910 if (device_register(&root))
911 panic("Could not register PA-RISC root device\n");
915 static __init void qemu_header(void)
920 pr_info("--- cut here ---\n");
921 pr_info("/* AUTO-GENERATED HEADER FILE FOR SEABIOS FIRMWARE */\n");
922 pr_cont("/* generated with Linux kernel */\n");
923 pr_cont("/* search for PARISC_QEMU_MACHINE_HEADER in Linux */\n\n");
925 pr_info("#define PARISC_MODEL \"%s\"\n\n",
926 boot_cpu_data.pdc.sys_model_name);
928 #define p ((unsigned long *)&boot_cpu_data.pdc.model)
929 pr_info("#define PARISC_PDC_MODEL 0x%lx, 0x%lx, 0x%lx, "
930 "0x%lx, 0x%lx, 0x%lx, 0x%lx, 0x%lx, 0x%lx, 0x%lx\n\n",
931 p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7], p[8], p[9]);
934 pr_info("#define PARISC_PDC_VERSION 0x%04lx\n\n",
935 boot_cpu_data.pdc.versions);
937 pr_info("#define PARISC_PDC_CPUID 0x%04lx\n\n",
938 boot_cpu_data.pdc.cpuid);
940 pr_info("#define PARISC_PDC_CAPABILITIES 0x%04lx\n\n",
941 boot_cpu_data.pdc.capabilities);
943 pr_info("#define PARISC_PDC_ENTRY_ORG 0x%04lx\n\n",
945 (unsigned long)(PAGE0->mem_pdc_hi) << 32 |
947 (unsigned long)PAGE0->mem_pdc);
949 pr_info("#define PARISC_PDC_CACHE_INFO");
950 p = (unsigned long *) &cache_info;
951 for (num = 0; num < sizeof(cache_info); num += sizeof(unsigned long)) {
952 if (((num % 5) == 0)) {
962 static __init int qemu_print_hpa(struct device *lin_dev, void *data)
964 struct parisc_device *dev = to_parisc_device(lin_dev);
965 unsigned long hpa = dev->hpa.start;
967 pr_cont("\t{\t.hpa = 0x%08lx,\\\n", hpa);
968 pr_cont("\t\t.iodc = &iodc_data_hpa_%08lx,\\\n", hpa);
969 pr_cont("\t\t.mod_info = &mod_info_hpa_%08lx,\\\n", hpa);
970 pr_cont("\t\t.mod_path = &mod_path_hpa_%08lx,\\\n", hpa);
971 pr_cont("\t\t.num_addr = HPA_%08lx_num_addr,\\\n", hpa);
972 pr_cont("\t\t.add_addr = { HPA_%08lx_add_addr } },\\\n", hpa);
977 static __init void qemu_footer(void)
979 pr_info("\n\n#define PARISC_DEVICE_LIST \\\n");
980 for_each_padev(qemu_print_hpa, NULL);
981 pr_cont("\t{ 0, }\n");
982 pr_info("--- cut here ---\n");
985 /* print iodc data of the various hpa modules for qemu inclusion */
986 static __init int qemu_print_iodc_data(struct device *lin_dev, void *data)
988 struct parisc_device *dev = to_parisc_device(lin_dev);
990 unsigned long hpa = dev->hpa.start;
992 struct pdc_iodc iodc_data;
995 struct pdc_system_map_mod_info pdc_mod_info;
996 struct pdc_module_path mod_path;
998 status = pdc_iodc_read(&count, hpa, 0,
999 &iodc_data, sizeof(iodc_data));
1000 if (status != PDC_OK) {
1001 pr_info("No IODC data for hpa 0x%08lx\n", hpa);
1007 /* Prevent hung task messages when printing on serial console */
1010 pr_info("#define HPA_%08lx_DESCRIPTION \"%s\"\n",
1011 hpa, parisc_hardware_description(&dev->id));
1015 status = pdc_system_map_find_mods(&pdc_mod_info,
1016 &mod_path, mod_index++);
1017 } while (status == PDC_OK && pdc_mod_info.mod_addr != hpa);
1019 pr_info("static struct pdc_system_map_mod_info"
1020 " mod_info_hpa_%08lx = {\n", hpa);
1021 #define DO(member) \
1022 pr_cont("\t." #member " = 0x%x,\n", \
1023 (unsigned int)pdc_mod_info.member)
1029 pr_info("static struct pdc_module_path "
1030 "mod_path_hpa_%08lx = {\n", hpa);
1031 pr_cont("\t.path = { ");
1032 pr_cont(".flags = 0x%x, ", mod_path.path.flags);
1033 pr_cont(".bc = { 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x }, ",
1034 (unsigned char)mod_path.path.bc[0],
1035 (unsigned char)mod_path.path.bc[1],
1036 (unsigned char)mod_path.path.bc[2],
1037 (unsigned char)mod_path.path.bc[3],
1038 (unsigned char)mod_path.path.bc[4],
1039 (unsigned char)mod_path.path.bc[5]);
1040 pr_cont(".mod = 0x%x ", mod_path.path.mod);
1042 pr_cont("\t.layers = { 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x }\n",
1043 mod_path.layers[0], mod_path.layers[1], mod_path.layers[2],
1044 mod_path.layers[3], mod_path.layers[4], mod_path.layers[5]);
1047 pr_info("static struct pdc_iodc iodc_data_hpa_%08lx = {\n", hpa);
1048 #define DO(member) \
1049 pr_cont("\t." #member " = 0x%04lx,\n", \
1050 (unsigned long)iodc_data.member)
1064 pr_cont("\t/* pad: 0x%04x, 0x%04x */\n",
1065 iodc_data.pad[0], iodc_data.pad[1]);
1068 pr_info("#define HPA_%08lx_num_addr %d\n", hpa, dev->num_addrs);
1069 pr_info("#define HPA_%08lx_add_addr ", hpa);
1071 if (dev->num_addrs == 0)
1073 while (count < dev->num_addrs) {
1074 pr_cont("0x%08lx, ", dev->addr[count]);
1084 static __init int print_one_device(struct device * dev, void * data)
1086 struct parisc_device * pdev = to_parisc_device(dev);
1089 print_parisc_device(pdev);
1094 * print_parisc_devices - Print out a list of devices found in this system
1096 void __init print_parisc_devices(void)
1098 for_each_padev(print_one_device, NULL);
1099 #define PARISC_QEMU_MACHINE_HEADER 0
1100 if (PARISC_QEMU_MACHINE_HEADER) {
1102 for_each_padev(qemu_print_iodc_data, NULL);