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Diffstat (limited to 'drivers/ps3/system-bus.c')
-rw-r--r--drivers/ps3/system-bus.c362
1 files changed, 0 insertions, 362 deletions
diff --git a/drivers/ps3/system-bus.c b/drivers/ps3/system-bus.c
deleted file mode 100644
index d79f949bcb2..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 = r->len = r->bus_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->bus_addr);
-
- if (result)
- pr_debug("%s:%d: lv1_unmap_device_mmio_region failed: %s\n",
- __func__, __LINE__, ps3_result(result));
-
- r->lpar_addr = r->len = r->bus_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);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-15 21:01:34 +0000