| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * Bus & driver management routines for devices within |
| * a MacIO ASIC. Interface to new driver model mostly |
| * stolen from the PCI version. |
| * |
| * Copyright (C) 2005 Ben. Herrenschmidt (benh@kernel.crashing.org) |
| * |
| * TODO: |
| * |
| * - Don't probe below media bay by default, but instead provide |
| * some hooks for media bay to dynamically add/remove it's own |
| * sub-devices. |
| */ |
| |
| #include <linux/string.h> |
| #include <linux/kernel.h> |
| #include <linux/pci.h> |
| #include <linux/pci_ids.h> |
| #include <linux/init.h> |
| #include <linux/module.h> |
| #include <linux/slab.h> |
| #include <linux/of.h> |
| #include <linux/of_address.h> |
| #include <linux/of_device.h> |
| #include <linux/of_platform.h> |
| #include <linux/of_irq.h> |
| |
| #include <asm/machdep.h> |
| #include <asm/macio.h> |
| #include <asm/pmac_feature.h> |
| |
| #undef DEBUG |
| |
| #define MAX_NODE_NAME_SIZE (20 - 12) |
| |
| static struct macio_chip *macio_on_hold; |
| |
| static int macio_bus_match(struct device *dev, const struct device_driver *drv) |
| { |
| const struct of_device_id * matches = drv->of_match_table; |
| |
| if (!matches) |
| return 0; |
| |
| return of_match_device(matches, dev) != NULL; |
| } |
| |
| struct macio_dev *macio_dev_get(struct macio_dev *dev) |
| { |
| struct device *tmp; |
| |
| if (!dev) |
| return NULL; |
| tmp = get_device(&dev->ofdev.dev); |
| if (tmp) |
| return to_macio_device(tmp); |
| else |
| return NULL; |
| } |
| |
| void macio_dev_put(struct macio_dev *dev) |
| { |
| if (dev) |
| put_device(&dev->ofdev.dev); |
| } |
| |
| |
| static int macio_device_probe(struct device *dev) |
| { |
| int error = -ENODEV; |
| struct macio_driver *drv; |
| struct macio_dev *macio_dev; |
| const struct of_device_id *match; |
| |
| drv = to_macio_driver(dev->driver); |
| macio_dev = to_macio_device(dev); |
| |
| if (!drv->probe) |
| return error; |
| |
| macio_dev_get(macio_dev); |
| |
| match = of_match_device(drv->driver.of_match_table, dev); |
| if (match) |
| error = drv->probe(macio_dev, match); |
| if (error) |
| macio_dev_put(macio_dev); |
| |
| return error; |
| } |
| |
| static void macio_device_remove(struct device *dev) |
| { |
| struct macio_dev * macio_dev = to_macio_device(dev); |
| struct macio_driver * drv = to_macio_driver(dev->driver); |
| |
| if (dev->driver && drv->remove) |
| drv->remove(macio_dev); |
| macio_dev_put(macio_dev); |
| } |
| |
| static void macio_device_shutdown(struct device *dev) |
| { |
| struct macio_dev * macio_dev = to_macio_device(dev); |
| struct macio_driver * drv = to_macio_driver(dev->driver); |
| |
| if (dev->driver && drv->shutdown) |
| drv->shutdown(macio_dev); |
| } |
| |
| static int macio_device_suspend(struct device *dev, pm_message_t state) |
| { |
| struct macio_dev * macio_dev = to_macio_device(dev); |
| struct macio_driver * drv = to_macio_driver(dev->driver); |
| |
| if (dev->driver && drv->suspend) |
| return drv->suspend(macio_dev, state); |
| return 0; |
| } |
| |
| static int macio_device_resume(struct device * dev) |
| { |
| struct macio_dev * macio_dev = to_macio_device(dev); |
| struct macio_driver * drv = to_macio_driver(dev->driver); |
| |
| if (dev->driver && drv->resume) |
| return drv->resume(macio_dev); |
| return 0; |
| } |
| |
| static int macio_device_modalias(const struct device *dev, struct kobj_uevent_env *env) |
| { |
| return of_device_uevent_modalias(dev, env); |
| } |
| |
| extern const struct attribute_group *macio_dev_groups[]; |
| |
| const struct bus_type macio_bus_type = { |
| .name = "macio", |
| .match = macio_bus_match, |
| .uevent = macio_device_modalias, |
| .probe = macio_device_probe, |
| .remove = macio_device_remove, |
| .shutdown = macio_device_shutdown, |
| .suspend = macio_device_suspend, |
| .resume = macio_device_resume, |
| .dev_groups = macio_dev_groups, |
| }; |
| |
| static int __init macio_bus_driver_init(void) |
| { |
| return bus_register(&macio_bus_type); |
| } |
| |
| postcore_initcall(macio_bus_driver_init); |
| |
| |
| /** |
| * macio_release_dev - free a macio device structure when all users of it are |
| * finished. |
| * @dev: device that's been disconnected |
| * |
| * Will be called only by the device core when all users of this macio device |
| * are done. This currently means never as we don't hot remove any macio |
| * device yet, though that will happen with mediabay based devices in a later |
| * implementation. |
| */ |
| static void macio_release_dev(struct device *dev) |
| { |
| struct macio_dev *mdev; |
| |
| mdev = to_macio_device(dev); |
| kfree(mdev); |
| } |
| |
| /** |
| * macio_resource_quirks - tweak or skip some resources for a device |
| * @np: pointer to the device node |
| * @res: resulting resource |
| * @index: index of resource in node |
| * |
| * If this routine returns non-null, then the resource is completely |
| * skipped. |
| */ |
| static int macio_resource_quirks(struct device_node *np, struct resource *res, |
| int index) |
| { |
| /* Only quirks for memory resources for now */ |
| if ((res->flags & IORESOURCE_MEM) == 0) |
| return 0; |
| |
| /* Grand Central has too large resource 0 on some machines */ |
| if (index == 0 && of_node_name_eq(np, "gc")) |
| res->end = res->start + 0x1ffff; |
| |
| /* Airport has bogus resource 2 */ |
| if (index >= 2 && of_node_name_eq(np, "radio")) |
| return 1; |
| |
| #ifndef CONFIG_PPC64 |
| /* DBDMAs may have bogus sizes */ |
| if ((res->start & 0x0001f000) == 0x00008000) |
| res->end = res->start + 0xff; |
| #endif /* CONFIG_PPC64 */ |
| |
| /* ESCC parent eats child resources. We could have added a |
| * level of hierarchy, but I don't really feel the need |
| * for it |
| */ |
| if (of_node_name_eq(np, "escc")) |
| return 1; |
| |
| /* ESCC has bogus resources >= 3 */ |
| if (index >= 3 && (of_node_name_eq(np, "ch-a") || |
| of_node_name_eq(np, "ch-b"))) |
| return 1; |
| |
| /* Media bay has too many resources, keep only first one */ |
| if (index > 0 && of_node_name_eq(np, "media-bay")) |
| return 1; |
| |
| /* Some older IDE resources have bogus sizes */ |
| if (of_node_name_eq(np, "IDE") || of_node_name_eq(np, "ATA") || |
| of_node_is_type(np, "ide") || of_node_is_type(np, "ata")) { |
| if (index == 0 && (res->end - res->start) > 0xfff) |
| res->end = res->start + 0xfff; |
| if (index == 1 && (res->end - res->start) > 0xff) |
| res->end = res->start + 0xff; |
| } |
| return 0; |
| } |
| |
| static void macio_create_fixup_irq(struct macio_dev *dev, int index, |
| unsigned int line) |
| { |
| unsigned int irq; |
| |
| irq = irq_create_mapping(NULL, line); |
| if (!irq) { |
| dev->interrupt[index].start = irq; |
| dev->interrupt[index].flags = IORESOURCE_IRQ; |
| dev->interrupt[index].name = dev_name(&dev->ofdev.dev); |
| } |
| if (dev->n_interrupts <= index) |
| dev->n_interrupts = index + 1; |
| } |
| |
| static void macio_add_missing_resources(struct macio_dev *dev) |
| { |
| struct device_node *np = dev->ofdev.dev.of_node; |
| unsigned int irq_base; |
| |
| /* Gatwick has some missing interrupts on child nodes */ |
| if (dev->bus->chip->type != macio_gatwick) |
| return; |
| |
| /* irq_base is always 64 on gatwick. I have no cleaner way to get |
| * that value from here at this point |
| */ |
| irq_base = 64; |
| |
| /* Fix SCC */ |
| if (of_node_name_eq(np, "ch-a")) { |
| macio_create_fixup_irq(dev, 0, 15 + irq_base); |
| macio_create_fixup_irq(dev, 1, 4 + irq_base); |
| macio_create_fixup_irq(dev, 2, 5 + irq_base); |
| printk(KERN_INFO "macio: fixed SCC irqs on gatwick\n"); |
| } |
| |
| /* Fix media-bay */ |
| if (of_node_name_eq(np, "media-bay")) { |
| macio_create_fixup_irq(dev, 0, 29 + irq_base); |
| printk(KERN_INFO "macio: fixed media-bay irq on gatwick\n"); |
| } |
| |
| /* Fix left media bay childs */ |
| if (dev->media_bay != NULL && of_node_name_eq(np, "floppy")) { |
| macio_create_fixup_irq(dev, 0, 19 + irq_base); |
| macio_create_fixup_irq(dev, 1, 1 + irq_base); |
| printk(KERN_INFO "macio: fixed left floppy irqs\n"); |
| } |
| if (dev->media_bay != NULL && of_node_name_eq(np, "ata4")) { |
| macio_create_fixup_irq(dev, 0, 14 + irq_base); |
| macio_create_fixup_irq(dev, 0, 3 + irq_base); |
| printk(KERN_INFO "macio: fixed left ide irqs\n"); |
| } |
| } |
| |
| static void macio_setup_interrupts(struct macio_dev *dev) |
| { |
| struct device_node *np = dev->ofdev.dev.of_node; |
| unsigned int irq; |
| int i = 0, j = 0; |
| |
| for (;;) { |
| struct resource *res; |
| |
| if (j >= MACIO_DEV_COUNT_IRQS) |
| break; |
| res = &dev->interrupt[j]; |
| irq = irq_of_parse_and_map(np, i++); |
| if (!irq) |
| break; |
| res->start = irq; |
| res->flags = IORESOURCE_IRQ; |
| res->name = dev_name(&dev->ofdev.dev); |
| if (macio_resource_quirks(np, res, i - 1)) { |
| memset(res, 0, sizeof(struct resource)); |
| continue; |
| } else |
| j++; |
| } |
| dev->n_interrupts = j; |
| } |
| |
| static void macio_setup_resources(struct macio_dev *dev, |
| struct resource *parent_res) |
| { |
| struct device_node *np = dev->ofdev.dev.of_node; |
| struct resource r; |
| int index; |
| |
| for (index = 0; of_address_to_resource(np, index, &r) == 0; index++) { |
| struct resource *res; |
| if (index >= MACIO_DEV_COUNT_RESOURCES) |
| break; |
| res = &dev->resource[index]; |
| *res = r; |
| res->name = dev_name(&dev->ofdev.dev); |
| |
| if (macio_resource_quirks(np, res, index)) { |
| memset(res, 0, sizeof(struct resource)); |
| continue; |
| } |
| /* Currently, we consider failure as harmless, this may |
| * change in the future, once I've found all the device |
| * tree bugs in older machines & worked around them |
| */ |
| if (insert_resource(parent_res, res)) { |
| printk(KERN_WARNING "Can't request resource " |
| "%d for MacIO device %s\n", |
| index, dev_name(&dev->ofdev.dev)); |
| } |
| } |
| dev->n_resources = index; |
| } |
| |
| /** |
| * macio_add_one_device - Add one device from OF node to the device tree |
| * @chip: pointer to the macio_chip holding the device |
| * @np: pointer to the device node in the OF tree |
| * @in_bay: set to 1 if device is part of a media-bay |
| * |
| * When media-bay is changed to hotswap drivers, this function will |
| * be exposed to the bay driver some way... |
| */ |
| static struct macio_dev * macio_add_one_device(struct macio_chip *chip, |
| struct device *parent, |
| struct device_node *np, |
| struct macio_dev *in_bay, |
| struct resource *parent_res) |
| { |
| char name[MAX_NODE_NAME_SIZE + 1]; |
| struct macio_dev *dev; |
| const u32 *reg; |
| |
| if (np == NULL) |
| return NULL; |
| |
| dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
| if (!dev) |
| return NULL; |
| |
| dev->bus = &chip->lbus; |
| dev->media_bay = in_bay; |
| dev->ofdev.dev.of_node = np; |
| dev->ofdev.archdata.dma_mask = 0xffffffffUL; |
| dev->ofdev.dev.dma_mask = &dev->ofdev.archdata.dma_mask; |
| dev->ofdev.dev.coherent_dma_mask = dev->ofdev.archdata.dma_mask; |
| dev->ofdev.dev.parent = parent; |
| dev->ofdev.dev.bus = &macio_bus_type; |
| dev->ofdev.dev.release = macio_release_dev; |
| dev->ofdev.dev.dma_parms = &dev->dma_parms; |
| |
| /* Standard DMA paremeters */ |
| dma_set_max_seg_size(&dev->ofdev.dev, 65536); |
| dma_set_seg_boundary(&dev->ofdev.dev, 0xffffffff); |
| |
| #if defined(CONFIG_PCI) && defined(CONFIG_DMA_OPS) |
| /* Set the DMA ops to the ones from the PCI device, this could be |
| * fishy if we didn't know that on PowerMac it's always direct ops |
| * or iommu ops that will work fine |
| * |
| * To get all the fields, copy all archdata |
| */ |
| dev->ofdev.dev.archdata = chip->lbus.pdev->dev.archdata; |
| dev->ofdev.dev.dma_ops = chip->lbus.pdev->dev.dma_ops; |
| #endif /* CONFIG_PCI && CONFIG_DMA_OPS */ |
| |
| #ifdef DEBUG |
| printk("preparing mdev @%p, ofdev @%p, dev @%p, kobj @%p\n", |
| dev, &dev->ofdev, &dev->ofdev.dev, &dev->ofdev.dev.kobj); |
| #endif |
| |
| /* MacIO itself has a different reg, we use it's PCI base */ |
| snprintf(name, sizeof(name), "%pOFn", np); |
| if (np == chip->of_node) { |
| dev_set_name(&dev->ofdev.dev, "%1d.%08x:%.*s", |
| chip->lbus.index, |
| #ifdef CONFIG_PCI |
| (unsigned int)pci_resource_start(chip->lbus.pdev, 0), |
| #else |
| 0, /* NuBus may want to do something better here */ |
| #endif |
| MAX_NODE_NAME_SIZE, name); |
| } else { |
| reg = of_get_property(np, "reg", NULL); |
| dev_set_name(&dev->ofdev.dev, "%1d.%08x:%.*s", |
| chip->lbus.index, |
| reg ? *reg : 0, MAX_NODE_NAME_SIZE, name); |
| } |
| |
| /* Setup interrupts & resources */ |
| macio_setup_interrupts(dev); |
| macio_setup_resources(dev, parent_res); |
| macio_add_missing_resources(dev); |
| |
| /* Register with core */ |
| if (of_device_register(&dev->ofdev) != 0) { |
| printk(KERN_DEBUG"macio: device registration error for %s!\n", |
| dev_name(&dev->ofdev.dev)); |
| put_device(&dev->ofdev.dev); |
| return NULL; |
| } |
| |
| return dev; |
| } |
| |
| static int macio_skip_device(struct device_node *np) |
| { |
| return of_node_name_prefix(np, "battery") || |
| of_node_name_prefix(np, "escc-legacy"); |
| } |
| |
| /** |
| * macio_pci_add_devices - Adds sub-devices of mac-io to the device tree |
| * @chip: pointer to the macio_chip holding the devices |
| * |
| * This function will do the job of extracting devices from the |
| * Open Firmware device tree, build macio_dev structures and add |
| * them to the Linux device tree. |
| * |
| * For now, childs of media-bay are added now as well. This will |
| * change rsn though. |
| */ |
| static void macio_pci_add_devices(struct macio_chip *chip) |
| { |
| struct device_node *np, *pnode; |
| struct macio_dev *rdev, *mdev, *mbdev = NULL, *sdev = NULL; |
| struct device *parent = NULL; |
| struct resource *root_res = &iomem_resource; |
| |
| /* Add a node for the macio bus itself */ |
| #ifdef CONFIG_PCI |
| if (chip->lbus.pdev) { |
| parent = &chip->lbus.pdev->dev; |
| root_res = &chip->lbus.pdev->resource[0]; |
| } |
| #endif |
| pnode = of_node_get(chip->of_node); |
| if (pnode == NULL) |
| return; |
| |
| /* Add macio itself to hierarchy */ |
| rdev = macio_add_one_device(chip, parent, pnode, NULL, root_res); |
| if (rdev == NULL) |
| return; |
| root_res = &rdev->resource[0]; |
| |
| /* First scan 1st level */ |
| for_each_child_of_node(pnode, np) { |
| if (macio_skip_device(np)) |
| continue; |
| of_node_get(np); |
| mdev = macio_add_one_device(chip, &rdev->ofdev.dev, np, NULL, |
| root_res); |
| if (mdev == NULL) |
| of_node_put(np); |
| else if (of_node_name_prefix(np, "media-bay")) |
| mbdev = mdev; |
| else if (of_node_name_prefix(np, "escc")) |
| sdev = mdev; |
| } |
| |
| /* Add media bay devices if any */ |
| if (mbdev) { |
| pnode = mbdev->ofdev.dev.of_node; |
| for_each_child_of_node(pnode, np) { |
| if (macio_skip_device(np)) |
| continue; |
| of_node_get(np); |
| if (macio_add_one_device(chip, &mbdev->ofdev.dev, np, |
| mbdev, root_res) == NULL) |
| of_node_put(np); |
| } |
| } |
| |
| /* Add serial ports if any */ |
| if (sdev) { |
| pnode = sdev->ofdev.dev.of_node; |
| for_each_child_of_node(pnode, np) { |
| if (macio_skip_device(np)) |
| continue; |
| of_node_get(np); |
| if (macio_add_one_device(chip, &sdev->ofdev.dev, np, |
| NULL, root_res) == NULL) |
| of_node_put(np); |
| } |
| } |
| } |
| |
| |
| /** |
| * macio_register_driver - Registers a new MacIO device driver |
| * @drv: pointer to the driver definition structure |
| */ |
| int macio_register_driver(struct macio_driver *drv) |
| { |
| /* initialize common driver fields */ |
| drv->driver.bus = &macio_bus_type; |
| |
| /* register with core */ |
| return driver_register(&drv->driver); |
| } |
| |
| /** |
| * macio_unregister_driver - Unregisters a new MacIO device driver |
| * @drv: pointer to the driver definition structure |
| */ |
| void macio_unregister_driver(struct macio_driver *drv) |
| { |
| driver_unregister(&drv->driver); |
| } |
| |
| /* Managed MacIO resources */ |
| struct macio_devres { |
| u32 res_mask; |
| }; |
| |
| static void maciom_release(struct device *gendev, void *res) |
| { |
| struct macio_dev *dev = to_macio_device(gendev); |
| struct macio_devres *dr = res; |
| int i, max; |
| |
| max = min(dev->n_resources, 32); |
| for (i = 0; i < max; i++) { |
| if (dr->res_mask & (1 << i)) |
| macio_release_resource(dev, i); |
| } |
| } |
| |
| int macio_enable_devres(struct macio_dev *dev) |
| { |
| struct macio_devres *dr; |
| |
| dr = devres_find(&dev->ofdev.dev, maciom_release, NULL, NULL); |
| if (!dr) { |
| dr = devres_alloc(maciom_release, sizeof(*dr), GFP_KERNEL); |
| if (!dr) |
| return -ENOMEM; |
| } |
| return devres_get(&dev->ofdev.dev, dr, NULL, NULL) != NULL; |
| } |
| |
| static struct macio_devres * find_macio_dr(struct macio_dev *dev) |
| { |
| return devres_find(&dev->ofdev.dev, maciom_release, NULL, NULL); |
| } |
| |
| /** |
| * macio_request_resource - Request an MMIO resource |
| * @dev: pointer to the device holding the resource |
| * @resource_no: resource number to request |
| * @name: resource name |
| * |
| * Mark memory region number @resource_no associated with MacIO |
| * device @dev as being reserved by owner @name. Do not access |
| * any address inside the memory regions unless this call returns |
| * successfully. |
| * |
| * Returns 0 on success, or %EBUSY on error. A warning |
| * message is also printed on failure. |
| */ |
| int macio_request_resource(struct macio_dev *dev, int resource_no, |
| const char *name) |
| { |
| struct macio_devres *dr = find_macio_dr(dev); |
| |
| if (macio_resource_len(dev, resource_no) == 0) |
| return 0; |
| |
| if (!request_mem_region(macio_resource_start(dev, resource_no), |
| macio_resource_len(dev, resource_no), |
| name)) |
| goto err_out; |
| |
| if (dr && resource_no < 32) |
| dr->res_mask |= 1 << resource_no; |
| |
| return 0; |
| |
| err_out: |
| printk (KERN_WARNING "MacIO: Unable to reserve resource #%d:%lx@%lx" |
| " for device %s\n", |
| resource_no, |
| macio_resource_len(dev, resource_no), |
| macio_resource_start(dev, resource_no), |
| dev_name(&dev->ofdev.dev)); |
| return -EBUSY; |
| } |
| |
| /** |
| * macio_release_resource - Release an MMIO resource |
| * @dev: pointer to the device holding the resource |
| * @resource_no: resource number to release |
| */ |
| void macio_release_resource(struct macio_dev *dev, int resource_no) |
| { |
| struct macio_devres *dr = find_macio_dr(dev); |
| |
| if (macio_resource_len(dev, resource_no) == 0) |
| return; |
| release_mem_region(macio_resource_start(dev, resource_no), |
| macio_resource_len(dev, resource_no)); |
| if (dr && resource_no < 32) |
| dr->res_mask &= ~(1 << resource_no); |
| } |
| |
| /** |
| * macio_request_resources - Reserve all memory resources |
| * @dev: MacIO device whose resources are to be reserved |
| * @name: Name to be associated with resource. |
| * |
| * Mark all memory regions associated with MacIO device @dev as |
| * being reserved by owner @name. Do not access any address inside |
| * the memory regions unless this call returns successfully. |
| * |
| * Returns 0 on success, or %EBUSY on error. A warning |
| * message is also printed on failure. |
| */ |
| int macio_request_resources(struct macio_dev *dev, const char *name) |
| { |
| int i; |
| |
| for (i = 0; i < dev->n_resources; i++) |
| if (macio_request_resource(dev, i, name)) |
| goto err_out; |
| return 0; |
| |
| err_out: |
| while(--i >= 0) |
| macio_release_resource(dev, i); |
| |
| return -EBUSY; |
| } |
| |
| /** |
| * macio_release_resources - Release reserved memory resources |
| * @dev: MacIO device whose resources were previously reserved |
| */ |
| |
| void macio_release_resources(struct macio_dev *dev) |
| { |
| int i; |
| |
| for (i = 0; i < dev->n_resources; i++) |
| macio_release_resource(dev, i); |
| } |
| |
| |
| #ifdef CONFIG_PCI |
| |
| static int macio_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
| { |
| struct device_node* np; |
| struct macio_chip* chip; |
| |
| if (ent->vendor != PCI_VENDOR_ID_APPLE) |
| return -ENODEV; |
| |
| /* Note regarding refcounting: We assume pci_device_to_OF_node() is |
| * ported to new OF APIs and returns a node with refcount incremented. |
| */ |
| np = pci_device_to_OF_node(pdev); |
| if (np == NULL) |
| return -ENODEV; |
| |
| /* The above assumption is wrong !!! |
| * fix that here for now until I fix the arch code |
| */ |
| of_node_get(np); |
| |
| /* We also assume that pmac_feature will have done a get() on nodes |
| * stored in the macio chips array |
| */ |
| chip = macio_find(np, macio_unknown); |
| of_node_put(np); |
| if (chip == NULL) |
| return -ENODEV; |
| |
| /* XXX Need locking ??? */ |
| if (chip->lbus.pdev == NULL) { |
| chip->lbus.pdev = pdev; |
| chip->lbus.chip = chip; |
| pci_set_drvdata(pdev, &chip->lbus); |
| pci_set_master(pdev); |
| } |
| |
| printk(KERN_INFO "MacIO PCI driver attached to %s chipset\n", |
| chip->name); |
| |
| /* |
| * HACK ALERT: The WallStreet PowerBook and some OHare based machines |
| * have 2 macio ASICs. I must probe the "main" one first or IDE |
| * ordering will be incorrect. So I put on "hold" the second one since |
| * it seem to appear first on PCI |
| */ |
| if (chip->type == macio_gatwick || chip->type == macio_ohareII) |
| if (macio_chips[0].lbus.pdev == NULL) { |
| macio_on_hold = chip; |
| return 0; |
| } |
| |
| macio_pci_add_devices(chip); |
| if (macio_on_hold && macio_chips[0].lbus.pdev != NULL) { |
| macio_pci_add_devices(macio_on_hold); |
| macio_on_hold = NULL; |
| } |
| |
| return 0; |
| } |
| |
| static void macio_pci_remove(struct pci_dev* pdev) |
| { |
| panic("removing of macio-asic not supported !\n"); |
| } |
| |
| /* |
| * MacIO is matched against any Apple ID, it's probe() function |
| * will then decide wether it applies or not |
| */ |
| static const struct pci_device_id pci_ids[] = { { |
| .vendor = PCI_VENDOR_ID_APPLE, |
| .device = PCI_ANY_ID, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| |
| }, { /* end: all zeroes */ } |
| }; |
| MODULE_DEVICE_TABLE (pci, pci_ids); |
| |
| /* pci driver glue; this is a "new style" PCI driver module */ |
| static struct pci_driver macio_pci_driver = { |
| .name = "macio", |
| .id_table = pci_ids, |
| |
| .probe = macio_pci_probe, |
| .remove = macio_pci_remove, |
| }; |
| |
| #endif /* CONFIG_PCI */ |
| |
| static int __init macio_module_init (void) |
| { |
| #ifdef CONFIG_PCI |
| int rc; |
| |
| rc = pci_register_driver(&macio_pci_driver); |
| if (rc) |
| return rc; |
| #endif /* CONFIG_PCI */ |
| return 0; |
| } |
| |
| module_init(macio_module_init); |
| |
| EXPORT_SYMBOL(macio_register_driver); |
| EXPORT_SYMBOL(macio_unregister_driver); |
| EXPORT_SYMBOL(macio_dev_get); |
| EXPORT_SYMBOL(macio_dev_put); |
| EXPORT_SYMBOL(macio_request_resource); |
| EXPORT_SYMBOL(macio_release_resource); |
| EXPORT_SYMBOL(macio_request_resources); |
| EXPORT_SYMBOL(macio_release_resources); |
| EXPORT_SYMBOL(macio_enable_devres); |
| |