[POWERPC] PS3: Move system bus to platform directory

Move the PS3 system bus routines from drivers/ps3 to
arch/powerpc/platforms/ps3.

Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

2 files changed, 0 insertions, 363 deletions

diff --git a/drivers/ps3/Makefile b/drivers/ps3/Makefile
index 8433eb7562c..d547cf50ca9 100644
--- a/drivers/ps3/Makefile
+++ b/drivers/ps3/Makefile
@@ -1,2 +1 @@
-obj-y += system-bus.o
 obj-$(CONFIG_PS3_VUART) += vuart.o
diff --git a/drivers/ps3/system-bus.c b/drivers/ps3/system-bus.c
deleted file mode 100644
index 468bdbcc722..00000000000
--- a/drivers/ps3/system-bus.c
+++ /dev/null
@@ -1,362 +0,0 @@
-/*
- *  PS3 system bus driver.
- *
- *  Copyright (C) 2006 Sony Computer Entertainment Inc.
- *  Copyright 2006 Sony Corp.
- *
- *  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; version 2 of the License.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/dma-mapping.h>
-#include <linux/err.h>
-
-#include <asm/udbg.h>
-#include <asm/ps3.h>
-#include <asm/lv1call.h>
-#include <asm/firmware.h>
-
-#define dump_mmio_region(_a) _dump_mmio_region(_a, __func__, __LINE__)
-static void _dump_mmio_region(const struct ps3_mmio_region* r,
-	const char* func, int line)
-{
-	pr_debug("%s:%d: dev       %u:%u\n", func, line, r->did.bus_id,
-		r->did.dev_id);
-	pr_debug("%s:%d: bus_addr  %lxh\n", func, line, r->bus_addr);
-	pr_debug("%s:%d: len       %lxh\n", func, line, r->len);
-	pr_debug("%s:%d: lpar_addr %lxh\n", func, line, r->lpar_addr);
-}
-
-int ps3_mmio_region_create(struct ps3_mmio_region *r)
-{
-	int result;
-
-	result = lv1_map_device_mmio_region(r->did.bus_id, r->did.dev_id,
-		r->bus_addr, r->len, r->page_size, &r->lpar_addr);
-
-	if (result) {
-		pr_debug("%s:%d: lv1_map_device_mmio_region failed: %s\n",
-			__func__, __LINE__, ps3_result(result));
-		r->lpar_addr = 0;
-	}
-
-	dump_mmio_region(r);
-	return result;
-}
-
-int ps3_free_mmio_region(struct ps3_mmio_region *r)
-{
-	int result;
-
-	result = lv1_unmap_device_mmio_region(r->did.bus_id, r->did.dev_id,
-		r->lpar_addr);
-
-	if (result)
-		pr_debug("%s:%d: lv1_unmap_device_mmio_region failed: %s\n",
-			__func__, __LINE__, ps3_result(result));
-
-	r->lpar_addr = 0;
-	return result;
-}
-
-static int ps3_system_bus_match(struct device *_dev,
-	struct device_driver *_drv)
-{
-	int result;
-	struct ps3_system_bus_driver *drv = to_ps3_system_bus_driver(_drv);
-	struct ps3_system_bus_device *dev = to_ps3_system_bus_device(_dev);
-
-	result = dev->match_id == drv->match_id;
-
-	pr_info("%s:%d: dev=%u(%s), drv=%u(%s): %s\n", __func__, __LINE__,
-		dev->match_id, dev->core.bus_id, drv->match_id, drv->core.name,
-		(result ? "match" : "miss"));
-	return result;
-}
-
-static int ps3_system_bus_probe(struct device *_dev)
-{
-	int result;
-	struct ps3_system_bus_device *dev = to_ps3_system_bus_device(_dev);
-	struct ps3_system_bus_driver *drv =
-		to_ps3_system_bus_driver(_dev->driver);
-
-	result = lv1_open_device(dev->did.bus_id, dev->did.dev_id, 0);
-
-	if (result) {
-		pr_debug("%s:%d: lv1_open_device failed (%d)\n",
-			__func__, __LINE__, result);
-		result = -EACCES;
-		goto clean_none;
-	}
-
-	if (dev->d_region->did.bus_id) {
-		result = ps3_dma_region_create(dev->d_region);
-
-		if (result) {
-			pr_debug("%s:%d: ps3_dma_region_create failed (%d)\n",
-				__func__, __LINE__, result);
-			BUG_ON("check region type");
-			result = -EINVAL;
-			goto clean_device;
-		}
-	}
-
-	BUG_ON(!drv);
-
-	if (drv->probe)
-		result = drv->probe(dev);
-	else
-		pr_info("%s:%d: %s no probe method\n", __func__, __LINE__,
-			dev->core.bus_id);
-
-	if (result) {
-		pr_debug("%s:%d: drv->probe failed\n", __func__, __LINE__);
-		goto clean_dma;
-	}
-
-	return result;
-
-clean_dma:
-	ps3_dma_region_free(dev->d_region);
-clean_device:
-	lv1_close_device(dev->did.bus_id, dev->did.dev_id);
-clean_none:
-	return result;
-}
-
-static int ps3_system_bus_remove(struct device *_dev)
-{
-	struct ps3_system_bus_device *dev = to_ps3_system_bus_device(_dev);
-	struct ps3_system_bus_driver *drv =
-		to_ps3_system_bus_driver(_dev->driver);
-
-	if (drv->remove)
-		drv->remove(dev);
-	else
-		pr_info("%s:%d: %s no remove method\n", __func__, __LINE__,
-			dev->core.bus_id);
-
-	ps3_dma_region_free(dev->d_region);
-	ps3_free_mmio_region(dev->m_region);
-	lv1_close_device(dev->did.bus_id, dev->did.dev_id);
-
-	return 0;
-}
-
-struct bus_type ps3_system_bus_type = {
-        .name = "ps3_system_bus",
-	.match = ps3_system_bus_match,
-	.probe = ps3_system_bus_probe,
-	.remove = ps3_system_bus_remove,
-};
-
-int __init ps3_system_bus_init(void)
-{
-	int result;
-
-	if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
-		return 0;
-
-	result = bus_register(&ps3_system_bus_type);
-	BUG_ON(result);
-	return result;
-}
-
-core_initcall(ps3_system_bus_init);
-
-/* Allocates a contiguous real buffer and creates mappings over it.
- * Returns the virtual address of the buffer and sets dma_handle
- * to the dma address (mapping) of the first page.
- */
-
-static void * ps3_alloc_coherent(struct device *_dev, size_t size,
-	dma_addr_t *dma_handle, gfp_t flag)
-{
-	int result;
-	struct ps3_system_bus_device *dev = to_ps3_system_bus_device(_dev);
-	unsigned long virt_addr;
-
-	BUG_ON(!dev->d_region->bus_addr);
-
-	flag &= ~(__GFP_DMA | __GFP_HIGHMEM);
-	flag |= __GFP_ZERO;
-
-	virt_addr = __get_free_pages(flag, get_order(size));
-
-	if (!virt_addr) {
-		pr_debug("%s:%d: get_free_pages failed\n", __func__, __LINE__);
-		goto clean_none;
-	}
-
-	result = ps3_dma_map(dev->d_region, virt_addr, size, dma_handle);
-
-	if (result) {
-		pr_debug("%s:%d: ps3_dma_map failed (%d)\n",
-			__func__, __LINE__, result);
-		BUG_ON("check region type");
-		goto clean_alloc;
-	}
-
-	return (void*)virt_addr;
-
-clean_alloc:
-	free_pages(virt_addr, get_order(size));
-clean_none:
-	dma_handle = NULL;
-	return NULL;
-}
-
-static void ps3_free_coherent(struct device *_dev, size_t size, void *vaddr,
-	dma_addr_t dma_handle)
-{
-	struct ps3_system_bus_device *dev = to_ps3_system_bus_device(_dev);
-
-	ps3_dma_unmap(dev->d_region, dma_handle, size);
-	free_pages((unsigned long)vaddr, get_order(size));
-}
-
-/* Creates TCEs for a user provided buffer.  The user buffer must be
- * contiguous real kernel storage (not vmalloc).  The address of the buffer
- * passed here is the kernel (virtual) address of the buffer.  The buffer
- * need not be page aligned, the dma_addr_t returned will point to the same
- * byte within the page as vaddr.
- */
-
-static dma_addr_t ps3_map_single(struct device *_dev, void *ptr, size_t size,
-	enum dma_data_direction direction)
-{
-	struct ps3_system_bus_device *dev = to_ps3_system_bus_device(_dev);
-	int result;
-	unsigned long bus_addr;
-
-	result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size,
-		&bus_addr);
-
-	if (result) {
-		pr_debug("%s:%d: ps3_dma_map failed (%d)\n",
-			__func__, __LINE__, result);
-	}
-
-	return bus_addr;
-}
-
-static void ps3_unmap_single(struct device *_dev, dma_addr_t dma_addr,
-	size_t size, enum dma_data_direction direction)
-{
-	struct ps3_system_bus_device *dev = to_ps3_system_bus_device(_dev);
-	int result;
-
-	result = ps3_dma_unmap(dev->d_region, dma_addr, size);
-
-	if (result) {
-		pr_debug("%s:%d: ps3_dma_unmap failed (%d)\n",
-			__func__, __LINE__, result);
-	}
-}
-
-static int ps3_map_sg(struct device *_dev, struct scatterlist *sg, int nents,
-	enum dma_data_direction direction)
-{
-#if defined(CONFIG_PS3_DYNAMIC_DMA)
-	BUG_ON("do");
-#endif
-	return 0;
-}
-
-static void ps3_unmap_sg(struct device *_dev, struct scatterlist *sg,
-	int nents, enum dma_data_direction direction)
-{
-#if defined(CONFIG_PS3_DYNAMIC_DMA)
-	BUG_ON("do");
-#endif
-}
-
-static int ps3_dma_supported(struct device *_dev, u64 mask)
-{
-	return 1;
-}
-
-static struct dma_mapping_ops ps3_dma_ops = {
-	.alloc_coherent = ps3_alloc_coherent,
-	.free_coherent = ps3_free_coherent,
-	.map_single = ps3_map_single,
-	.unmap_single = ps3_unmap_single,
-	.map_sg = ps3_map_sg,
-	.unmap_sg = ps3_unmap_sg,
-	.dma_supported = ps3_dma_supported
-};
-
-/**
- * ps3_system_bus_release_device - remove a device from the system bus
- */
-
-static void ps3_system_bus_release_device(struct device *_dev)
-{
-	struct ps3_system_bus_device *dev = to_ps3_system_bus_device(_dev);
-	kfree(dev);
-}
-
-/**
- * ps3_system_bus_device_register - add a device to the system bus
- *
- * ps3_system_bus_device_register() expects the dev object to be allocated
- * dynamically by the caller.  The system bus takes ownership of the dev
- * object and frees the object in ps3_system_bus_release_device().
- */
-
-int ps3_system_bus_device_register(struct ps3_system_bus_device *dev)
-{
-	int result;
-	static unsigned int dev_count = 1;
-
-	dev->core.parent = NULL;
-	dev->core.bus = &ps3_system_bus_type;
-	dev->core.release = ps3_system_bus_release_device;
-
-	dev->core.archdata.of_node = NULL;
-	dev->core.archdata.dma_ops = &ps3_dma_ops;
-	dev->core.archdata.numa_node = 0;
-
-	snprintf(dev->core.bus_id, sizeof(dev->core.bus_id), "sb_%02x",
-		dev_count++);
-
-	pr_debug("%s:%d add %s\n", __func__, __LINE__, dev->core.bus_id);
-
-	result = device_register(&dev->core);
-	return result;
-}
-
-EXPORT_SYMBOL_GPL(ps3_system_bus_device_register);
-
-int ps3_system_bus_driver_register(struct ps3_system_bus_driver *drv)
-{
-	int result;
-
-	drv->core.bus = &ps3_system_bus_type;
-
-	result = driver_register(&drv->core);
-	return result;
-}
-
-EXPORT_SYMBOL_GPL(ps3_system_bus_driver_register);
-
-void ps3_system_bus_driver_unregister(struct ps3_system_bus_driver *drv)
-{
-	driver_unregister(&drv->core);
-}
-
-EXPORT_SYMBOL_GPL(ps3_system_bus_driver_unregister);