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author | Stephen Rothwell <sfr@canb.auug.org.au> | 2005-10-24 14:22:37 +1000 |
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committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2005-10-24 15:41:44 +1000 |
commit | 580460194e0e647d95cb5a2b66fdd7497b197f92 (patch) | |
tree | bce8e2c26e02c01210f6aa82fed9a9772bdf6fd6 /arch/ppc64/kernel | |
parent | 85e568ea5843d455a0bcb682ad2c71abb50bdb80 (diff) | |
download | op-kernel-dev-580460194e0e647d95cb5a2b66fdd7497b197f92.zip op-kernel-dev-580460194e0e647d95cb5a2b66fdd7497b197f92.tar.gz |
powerpc: Merge arch/ppc64/kernel/vio.c into arch/powerpc/kernel/vio.c
Merge arch/ppc64/kernel/vio.c into arch/powerpc/kernel/vio.c, update
the Makefiles to make it work, and make ARCH=ppc64 still work.
Michael's version put vio.c in arch/powerpc/sysedv but after consolting
Paulus, this one puts it in arch/powerpc/kernel.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Diffstat (limited to 'arch/ppc64/kernel')
-rw-r--r-- | arch/ppc64/kernel/Makefile | 1 | ||||
-rw-r--r-- | arch/ppc64/kernel/vio.c | 261 |
2 files changed, 0 insertions, 262 deletions
diff --git a/arch/ppc64/kernel/Makefile b/arch/ppc64/kernel/Makefile index 424dd25..ce5c99d 100644 --- a/arch/ppc64/kernel/Makefile +++ b/arch/ppc64/kernel/Makefile @@ -53,7 +53,6 @@ obj-$(CONFIG_BOOTX_TEXT) += btext.o endif obj-$(CONFIG_HVCS) += hvcserver.o -obj-$(CONFIG_IBMVIO) += vio.o obj-$(CONFIG_XICS) += xics.o obj-$(CONFIG_PPC_PMAC) += udbg_scc.o diff --git a/arch/ppc64/kernel/vio.c b/arch/ppc64/kernel/vio.c deleted file mode 100644 index 0e555b7..0000000 --- a/arch/ppc64/kernel/vio.c +++ /dev/null @@ -1,261 +0,0 @@ -/* - * IBM PowerPC Virtual I/O Infrastructure Support. - * - * Copyright (c) 2003-2005 IBM Corp. - * Dave Engebretsen engebret@us.ibm.com - * Santiago Leon santil@us.ibm.com - * Hollis Blanchard <hollisb@us.ibm.com> - * Stephen Rothwell - * - * 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. - */ - -#include <linux/init.h> -#include <linux/console.h> -#include <linux/module.h> -#include <linux/mm.h> -#include <linux/dma-mapping.h> -#include <asm/iommu.h> -#include <asm/dma.h> -#include <asm/vio.h> - -static const struct vio_device_id *vio_match_device( - const struct vio_device_id *, const struct vio_dev *); - -struct vio_dev vio_bus_device = { /* fake "parent" device */ - .name = vio_bus_device.dev.bus_id, - .type = "", - .dev.bus_id = "vio", - .dev.bus = &vio_bus_type, -}; - -static struct vio_bus_ops vio_bus_ops; - -/* - * Convert from struct device to struct vio_dev and pass to driver. - * dev->driver has already been set by generic code because vio_bus_match - * succeeded. - */ -static int vio_bus_probe(struct device *dev) -{ - struct vio_dev *viodev = to_vio_dev(dev); - struct vio_driver *viodrv = to_vio_driver(dev->driver); - const struct vio_device_id *id; - int error = -ENODEV; - - if (!viodrv->probe) - return error; - - id = vio_match_device(viodrv->id_table, viodev); - if (id) - error = viodrv->probe(viodev, id); - - return error; -} - -/* convert from struct device to struct vio_dev and pass to driver. */ -static int vio_bus_remove(struct device *dev) -{ - struct vio_dev *viodev = to_vio_dev(dev); - struct vio_driver *viodrv = to_vio_driver(dev->driver); - - if (viodrv->remove) - return viodrv->remove(viodev); - - /* driver can't remove */ - return 1; -} - -/** - * vio_register_driver: - Register a new vio driver - * @drv: The vio_driver structure to be registered. - */ -int vio_register_driver(struct vio_driver *viodrv) -{ - printk(KERN_DEBUG "%s: driver %s registering\n", __FUNCTION__, - viodrv->name); - - /* fill in 'struct driver' fields */ - viodrv->driver.name = viodrv->name; - viodrv->driver.bus = &vio_bus_type; - viodrv->driver.probe = vio_bus_probe; - viodrv->driver.remove = vio_bus_remove; - - return driver_register(&viodrv->driver); -} -EXPORT_SYMBOL(vio_register_driver); - -/** - * vio_unregister_driver - Remove registration of vio driver. - * @driver: The vio_driver struct to be removed form registration - */ -void vio_unregister_driver(struct vio_driver *viodrv) -{ - driver_unregister(&viodrv->driver); -} -EXPORT_SYMBOL(vio_unregister_driver); - -/** - * vio_match_device: - Tell if a VIO device has a matching - * VIO device id structure. - * @ids: array of VIO device id structures to search in - * @dev: the VIO device structure to match against - * - * Used by a driver to check whether a VIO device present in the - * system is in its list of supported devices. Returns the matching - * vio_device_id structure or NULL if there is no match. - */ -static const struct vio_device_id *vio_match_device( - const struct vio_device_id *ids, const struct vio_dev *dev) -{ - while (ids->type[0] != '\0') { - if (vio_bus_ops.match(ids, dev)) - return ids; - ids++; - } - return NULL; -} - -/** - * vio_bus_init: - Initialize the virtual IO bus - */ -int __init vio_bus_init(struct vio_bus_ops *ops) -{ - int err; - - vio_bus_ops = *ops; - - err = bus_register(&vio_bus_type); - if (err) { - printk(KERN_ERR "failed to register VIO bus\n"); - return err; - } - - /* - * The fake parent of all vio devices, just to give us - * a nice directory - */ - err = device_register(&vio_bus_device.dev); - if (err) { - printk(KERN_WARNING "%s: device_register returned %i\n", - __FUNCTION__, err); - return err; - } - - return 0; -} - -/* vio_dev refcount hit 0 */ -static void __devinit vio_dev_release(struct device *dev) -{ - if (vio_bus_ops.release_device) - vio_bus_ops.release_device(dev); - kfree(to_vio_dev(dev)); -} - -static ssize_t viodev_show_name(struct device *dev, - struct device_attribute *attr, char *buf) -{ - return sprintf(buf, "%s\n", to_vio_dev(dev)->name); -} -DEVICE_ATTR(name, S_IRUSR | S_IRGRP | S_IROTH, viodev_show_name, NULL); - -struct vio_dev * __devinit vio_register_device(struct vio_dev *viodev) -{ - /* init generic 'struct device' fields: */ - viodev->dev.parent = &vio_bus_device.dev; - viodev->dev.bus = &vio_bus_type; - viodev->dev.release = vio_dev_release; - - /* register with generic device framework */ - if (device_register(&viodev->dev)) { - printk(KERN_ERR "%s: failed to register device %s\n", - __FUNCTION__, viodev->dev.bus_id); - return NULL; - } - device_create_file(&viodev->dev, &dev_attr_name); - - return viodev; -} - -void __devinit vio_unregister_device(struct vio_dev *viodev) -{ - if (vio_bus_ops.unregister_device) - vio_bus_ops.unregister_device(viodev); - device_remove_file(&viodev->dev, &dev_attr_name); - device_unregister(&viodev->dev); -} -EXPORT_SYMBOL(vio_unregister_device); - -static dma_addr_t vio_map_single(struct device *dev, void *vaddr, - size_t size, enum dma_data_direction direction) -{ - return iommu_map_single(to_vio_dev(dev)->iommu_table, vaddr, size, - direction); -} - -static void vio_unmap_single(struct device *dev, dma_addr_t dma_handle, - size_t size, enum dma_data_direction direction) -{ - iommu_unmap_single(to_vio_dev(dev)->iommu_table, dma_handle, size, - direction); -} - -static int vio_map_sg(struct device *dev, struct scatterlist *sglist, - int nelems, enum dma_data_direction direction) -{ - return iommu_map_sg(dev, to_vio_dev(dev)->iommu_table, sglist, - nelems, direction); -} - -static void vio_unmap_sg(struct device *dev, struct scatterlist *sglist, - int nelems, enum dma_data_direction direction) -{ - iommu_unmap_sg(to_vio_dev(dev)->iommu_table, sglist, nelems, direction); -} - -static void *vio_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t flag) -{ - return iommu_alloc_coherent(to_vio_dev(dev)->iommu_table, size, - dma_handle, flag); -} - -static void vio_free_coherent(struct device *dev, size_t size, - void *vaddr, dma_addr_t dma_handle) -{ - iommu_free_coherent(to_vio_dev(dev)->iommu_table, size, vaddr, - dma_handle); -} - -static int vio_dma_supported(struct device *dev, u64 mask) -{ - return 1; -} - -struct dma_mapping_ops vio_dma_ops = { - .alloc_coherent = vio_alloc_coherent, - .free_coherent = vio_free_coherent, - .map_single = vio_map_single, - .unmap_single = vio_unmap_single, - .map_sg = vio_map_sg, - .unmap_sg = vio_unmap_sg, - .dma_supported = vio_dma_supported, -}; - -static int vio_bus_match(struct device *dev, struct device_driver *drv) -{ - const struct vio_dev *vio_dev = to_vio_dev(dev); - struct vio_driver *vio_drv = to_vio_driver(drv); - const struct vio_device_id *ids = vio_drv->id_table; - - return (ids != NULL) && (vio_match_device(ids, vio_dev) != NULL); -} - -struct bus_type vio_bus_type = { - .name = "vio", - .match = vio_bus_match, -}; |