linux/arch/powerpc/platforms/ps3/system-bus.c
Mark Nelson f9226d572d powerpc: Update remaining dma_mapping_ops to use map/unmap_page
After the merge of the 32 and 64bit DMA code, dma_direct_ops lost
their map/unmap_single() functions but gained map/unmap_page().  This
caused a problem for Cell because Cell's dma_iommu_fixed_ops called
the dma_direct_ops if the fixed linear mapping was to be used or the
iommu ops if the dynamic window was to be used.  So in order to fix
this problem we need to update the 64bit DMA code to use
map/unmap_page.

First, we update the generic IOMMU code so that iommu_map_single()
becomes iommu_map_page() and iommu_unmap_single() becomes
iommu_unmap_page().  Then we propagate these changes up through all
the callers of these two functions and in the process update all the
dma_mapping_ops so that they have map/unmap_page rahter than
map/unmap_single.  We can do this because on 64bit there is no HIGHMEM
memory so map/unmap_page ends up performing exactly the same function
as map/unmap_single, just taking different arguments.

This has no affect on drivers because the dma_map_single_attrs() just
ends up calling the map_page() function of the appropriate
dma_mapping_ops and similarly the dma_unmap_single_attrs() calls
unmap_page().

This fixes an oops on Cell blades, which oops on boot without this
because they call dma_direct_ops.map_single, which is NULL.

Signed-off-by: Mark Nelson <markn@au1.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-10-31 16:13:48 +11:00

803 lines
19 KiB
C

/*
* 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/lv1call.h>
#include <asm/firmware.h>
#include "platform.h"
static struct device ps3_system_bus = {
.bus_id = "ps3_system",
};
/* FIXME: need device usage counters! */
struct {
struct mutex mutex;
int sb_11; /* usb 0 */
int sb_12; /* usb 0 */
int gpu;
} static usage_hack;
static int ps3_is_device(struct ps3_system_bus_device *dev, u64 bus_id,
u64 dev_id)
{
return dev->bus_id == bus_id && dev->dev_id == dev_id;
}
static int ps3_open_hv_device_sb(struct ps3_system_bus_device *dev)
{
int result;
BUG_ON(!dev->bus_id);
mutex_lock(&usage_hack.mutex);
if (ps3_is_device(dev, 1, 1)) {
usage_hack.sb_11++;
if (usage_hack.sb_11 > 1) {
result = 0;
goto done;
}
}
if (ps3_is_device(dev, 1, 2)) {
usage_hack.sb_12++;
if (usage_hack.sb_12 > 1) {
result = 0;
goto done;
}
}
result = lv1_open_device(dev->bus_id, dev->dev_id, 0);
if (result) {
pr_debug("%s:%d: lv1_open_device failed: %s\n", __func__,
__LINE__, ps3_result(result));
result = -EPERM;
}
done:
mutex_unlock(&usage_hack.mutex);
return result;
}
static int ps3_close_hv_device_sb(struct ps3_system_bus_device *dev)
{
int result;
BUG_ON(!dev->bus_id);
mutex_lock(&usage_hack.mutex);
if (ps3_is_device(dev, 1, 1)) {
usage_hack.sb_11--;
if (usage_hack.sb_11) {
result = 0;
goto done;
}
}
if (ps3_is_device(dev, 1, 2)) {
usage_hack.sb_12--;
if (usage_hack.sb_12) {
result = 0;
goto done;
}
}
result = lv1_close_device(dev->bus_id, dev->dev_id);
BUG_ON(result);
done:
mutex_unlock(&usage_hack.mutex);
return result;
}
static int ps3_open_hv_device_gpu(struct ps3_system_bus_device *dev)
{
int result;
mutex_lock(&usage_hack.mutex);
usage_hack.gpu++;
if (usage_hack.gpu > 1) {
result = 0;
goto done;
}
result = lv1_gpu_open(0);
if (result) {
pr_debug("%s:%d: lv1_gpu_open failed: %s\n", __func__,
__LINE__, ps3_result(result));
result = -EPERM;
}
done:
mutex_unlock(&usage_hack.mutex);
return result;
}
static int ps3_close_hv_device_gpu(struct ps3_system_bus_device *dev)
{
int result;
mutex_lock(&usage_hack.mutex);
usage_hack.gpu--;
if (usage_hack.gpu) {
result = 0;
goto done;
}
result = lv1_gpu_close();
BUG_ON(result);
done:
mutex_unlock(&usage_hack.mutex);
return result;
}
int ps3_open_hv_device(struct ps3_system_bus_device *dev)
{
BUG_ON(!dev);
pr_debug("%s:%d: match_id: %u\n", __func__, __LINE__, dev->match_id);
switch (dev->match_id) {
case PS3_MATCH_ID_EHCI:
case PS3_MATCH_ID_OHCI:
case PS3_MATCH_ID_GELIC:
case PS3_MATCH_ID_STOR_DISK:
case PS3_MATCH_ID_STOR_ROM:
case PS3_MATCH_ID_STOR_FLASH:
return ps3_open_hv_device_sb(dev);
case PS3_MATCH_ID_SOUND:
case PS3_MATCH_ID_GRAPHICS:
return ps3_open_hv_device_gpu(dev);
case PS3_MATCH_ID_AV_SETTINGS:
case PS3_MATCH_ID_SYSTEM_MANAGER:
pr_debug("%s:%d: unsupported match_id: %u\n", __func__,
__LINE__, dev->match_id);
pr_debug("%s:%d: bus_id: %lu\n", __func__, __LINE__,
dev->bus_id);
BUG();
return -EINVAL;
default:
break;
}
pr_debug("%s:%d: unknown match_id: %u\n", __func__, __LINE__,
dev->match_id);
BUG();
return -ENODEV;
}
EXPORT_SYMBOL_GPL(ps3_open_hv_device);
int ps3_close_hv_device(struct ps3_system_bus_device *dev)
{
BUG_ON(!dev);
pr_debug("%s:%d: match_id: %u\n", __func__, __LINE__, dev->match_id);
switch (dev->match_id) {
case PS3_MATCH_ID_EHCI:
case PS3_MATCH_ID_OHCI:
case PS3_MATCH_ID_GELIC:
case PS3_MATCH_ID_STOR_DISK:
case PS3_MATCH_ID_STOR_ROM:
case PS3_MATCH_ID_STOR_FLASH:
return ps3_close_hv_device_sb(dev);
case PS3_MATCH_ID_SOUND:
case PS3_MATCH_ID_GRAPHICS:
return ps3_close_hv_device_gpu(dev);
case PS3_MATCH_ID_AV_SETTINGS:
case PS3_MATCH_ID_SYSTEM_MANAGER:
pr_debug("%s:%d: unsupported match_id: %u\n", __func__,
__LINE__, dev->match_id);
pr_debug("%s:%d: bus_id: %lu\n", __func__, __LINE__,
dev->bus_id);
BUG();
return -EINVAL;
default:
break;
}
pr_debug("%s:%d: unknown match_id: %u\n", __func__, __LINE__,
dev->match_id);
BUG();
return -ENODEV;
}
EXPORT_SYMBOL_GPL(ps3_close_hv_device);
#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 %lu:%lu\n", func, line, r->dev->bus_id,
r->dev->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);
}
static int ps3_sb_mmio_region_create(struct ps3_mmio_region *r)
{
int result;
result = lv1_map_device_mmio_region(r->dev->bus_id, r->dev->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;
}
static int ps3_ioc0_mmio_region_create(struct ps3_mmio_region *r)
{
/* device specific; do nothing currently */
return 0;
}
int ps3_mmio_region_create(struct ps3_mmio_region *r)
{
return r->mmio_ops->create(r);
}
EXPORT_SYMBOL_GPL(ps3_mmio_region_create);
static int ps3_sb_free_mmio_region(struct ps3_mmio_region *r)
{
int result;
dump_mmio_region(r);
;
result = lv1_unmap_device_mmio_region(r->dev->bus_id, r->dev->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_ioc0_free_mmio_region(struct ps3_mmio_region *r)
{
/* device specific; do nothing currently */
return 0;
}
int ps3_free_mmio_region(struct ps3_mmio_region *r)
{
return r->mmio_ops->free(r);
}
EXPORT_SYMBOL_GPL(ps3_free_mmio_region);
static const struct ps3_mmio_region_ops ps3_mmio_sb_region_ops = {
.create = ps3_sb_mmio_region_create,
.free = ps3_sb_free_mmio_region
};
static const struct ps3_mmio_region_ops ps3_mmio_ioc0_region_ops = {
.create = ps3_ioc0_mmio_region_create,
.free = ps3_ioc0_free_mmio_region
};
int ps3_mmio_region_init(struct ps3_system_bus_device *dev,
struct ps3_mmio_region *r, unsigned long bus_addr, unsigned long len,
enum ps3_mmio_page_size page_size)
{
r->dev = dev;
r->bus_addr = bus_addr;
r->len = len;
r->page_size = page_size;
switch (dev->dev_type) {
case PS3_DEVICE_TYPE_SB:
r->mmio_ops = &ps3_mmio_sb_region_ops;
break;
case PS3_DEVICE_TYPE_IOC0:
r->mmio_ops = &ps3_mmio_ioc0_region_ops;
break;
default:
BUG();
return -EINVAL;
}
return 0;
}
EXPORT_SYMBOL_GPL(ps3_mmio_region_init);
static int ps3_system_bus_match(struct device *_dev,
struct device_driver *_drv)
{
int result;
struct ps3_system_bus_driver *drv = ps3_drv_to_system_bus_drv(_drv);
struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
if (!dev->match_sub_id)
result = dev->match_id == drv->match_id;
else
result = dev->match_sub_id == drv->match_sub_id &&
dev->match_id == drv->match_id;
if (result)
pr_info("%s:%d: dev=%u.%u(%s), drv=%u.%u(%s): match\n",
__func__, __LINE__,
dev->match_id, dev->match_sub_id, dev->core.bus_id,
drv->match_id, drv->match_sub_id, drv->core.name);
else
pr_debug("%s:%d: dev=%u.%u(%s), drv=%u.%u(%s): miss\n",
__func__, __LINE__,
dev->match_id, dev->match_sub_id, dev->core.bus_id,
drv->match_id, drv->match_sub_id, drv->core.name);
return result;
}
static int ps3_system_bus_probe(struct device *_dev)
{
int result = 0;
struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
struct ps3_system_bus_driver *drv;
BUG_ON(!dev);
pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, _dev->bus_id);
drv = ps3_system_bus_dev_to_system_bus_drv(dev);
BUG_ON(!drv);
if (drv->probe)
result = drv->probe(dev);
else
pr_debug("%s:%d: %s no probe method\n", __func__, __LINE__,
dev->core.bus_id);
pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, dev->core.bus_id);
return result;
}
static int ps3_system_bus_remove(struct device *_dev)
{
int result = 0;
struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
struct ps3_system_bus_driver *drv;
BUG_ON(!dev);
pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, _dev->bus_id);
drv = ps3_system_bus_dev_to_system_bus_drv(dev);
BUG_ON(!drv);
if (drv->remove)
result = drv->remove(dev);
else
dev_dbg(&dev->core, "%s:%d %s: no remove method\n",
__func__, __LINE__, drv->core.name);
pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, dev->core.bus_id);
return result;
}
static void ps3_system_bus_shutdown(struct device *_dev)
{
struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
struct ps3_system_bus_driver *drv;
BUG_ON(!dev);
dev_dbg(&dev->core, " -> %s:%d: match_id %d\n", __func__, __LINE__,
dev->match_id);
if (!dev->core.driver) {
dev_dbg(&dev->core, "%s:%d: no driver bound\n", __func__,
__LINE__);
return;
}
drv = ps3_system_bus_dev_to_system_bus_drv(dev);
BUG_ON(!drv);
dev_dbg(&dev->core, "%s:%d: %s -> %s\n", __func__, __LINE__,
dev->core.bus_id, drv->core.name);
if (drv->shutdown)
drv->shutdown(dev);
else if (drv->remove) {
dev_dbg(&dev->core, "%s:%d %s: no shutdown, calling remove\n",
__func__, __LINE__, drv->core.name);
drv->remove(dev);
} else {
dev_dbg(&dev->core, "%s:%d %s: no shutdown method\n",
__func__, __LINE__, drv->core.name);
BUG();
}
dev_dbg(&dev->core, " <- %s:%d\n", __func__, __LINE__);
}
static int ps3_system_bus_uevent(struct device *_dev, struct kobj_uevent_env *env)
{
struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
if (add_uevent_var(env, "MODALIAS=ps3:%d", dev->match_id))
return -ENOMEM;
return 0;
}
static ssize_t modalias_show(struct device *_dev, struct device_attribute *a,
char *buf)
{
struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
int len = snprintf(buf, PAGE_SIZE, "ps3:%d\n", dev->match_id);
return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
}
static struct device_attribute ps3_system_bus_dev_attrs[] = {
__ATTR_RO(modalias),
__ATTR_NULL,
};
struct bus_type ps3_system_bus_type = {
.name = "ps3_system_bus",
.match = ps3_system_bus_match,
.uevent = ps3_system_bus_uevent,
.probe = ps3_system_bus_probe,
.remove = ps3_system_bus_remove,
.shutdown = ps3_system_bus_shutdown,
.dev_attrs = ps3_system_bus_dev_attrs,
};
static int __init ps3_system_bus_init(void)
{
int result;
if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
return -ENODEV;
pr_debug(" -> %s:%d\n", __func__, __LINE__);
mutex_init(&usage_hack.mutex);
result = device_register(&ps3_system_bus);
BUG_ON(result);
result = bus_register(&ps3_system_bus_type);
BUG_ON(result);
pr_debug(" <- %s:%d\n", __func__, __LINE__);
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 = ps3_dev_to_system_bus_dev(_dev);
unsigned long virt_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,
IOPTE_PP_W | IOPTE_PP_R | IOPTE_SO_RW | IOPTE_M);
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 = ps3_dev_to_system_bus_dev(_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 passed here
* comprises a page address and offset into that page. The dma_addr_t
* returned will point to the same byte within the page as was passed in.
*/
static dma_addr_t ps3_sb_map_page(struct device *_dev, struct page *page,
unsigned long offset, size_t size, enum dma_data_direction direction,
struct dma_attrs *attrs)
{
struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
int result;
unsigned long bus_addr;
void *ptr = page_address(page) + offset;
result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size,
&bus_addr,
IOPTE_PP_R | IOPTE_PP_W | IOPTE_SO_RW | IOPTE_M);
if (result) {
pr_debug("%s:%d: ps3_dma_map failed (%d)\n",
__func__, __LINE__, result);
}
return bus_addr;
}
static dma_addr_t ps3_ioc0_map_page(struct device *_dev, struct page *page,
unsigned long offset, size_t size,
enum dma_data_direction direction,
struct dma_attrs *attrs)
{
struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
int result;
unsigned long bus_addr;
u64 iopte_flag;
void *ptr = page_address(page) + offset;
iopte_flag = IOPTE_M;
switch (direction) {
case DMA_BIDIRECTIONAL:
iopte_flag |= IOPTE_PP_R | IOPTE_PP_W | IOPTE_SO_RW;
break;
case DMA_TO_DEVICE:
iopte_flag |= IOPTE_PP_R | IOPTE_SO_R;
break;
case DMA_FROM_DEVICE:
iopte_flag |= IOPTE_PP_W | IOPTE_SO_RW;
break;
default:
/* not happned */
BUG();
};
result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size,
&bus_addr, iopte_flag);
if (result) {
pr_debug("%s:%d: ps3_dma_map failed (%d)\n",
__func__, __LINE__, result);
}
return bus_addr;
}
static void ps3_unmap_page(struct device *_dev, dma_addr_t dma_addr,
size_t size, enum dma_data_direction direction, struct dma_attrs *attrs)
{
struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_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_sb_map_sg(struct device *_dev, struct scatterlist *sgl,
int nents, enum dma_data_direction direction, struct dma_attrs *attrs)
{
#if defined(CONFIG_PS3_DYNAMIC_DMA)
BUG_ON("do");
return -EPERM;
#else
struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
struct scatterlist *sg;
int i;
for_each_sg(sgl, sg, nents, i) {
int result = ps3_dma_map(dev->d_region, sg_phys(sg),
sg->length, &sg->dma_address, 0);
if (result) {
pr_debug("%s:%d: ps3_dma_map failed (%d)\n",
__func__, __LINE__, result);
return -EINVAL;
}
sg->dma_length = sg->length;
}
return nents;
#endif
}
static int ps3_ioc0_map_sg(struct device *_dev, struct scatterlist *sg,
int nents,
enum dma_data_direction direction,
struct dma_attrs *attrs)
{
BUG();
return 0;
}
static void ps3_sb_unmap_sg(struct device *_dev, struct scatterlist *sg,
int nents, enum dma_data_direction direction, struct dma_attrs *attrs)
{
#if defined(CONFIG_PS3_DYNAMIC_DMA)
BUG_ON("do");
#endif
}
static void ps3_ioc0_unmap_sg(struct device *_dev, struct scatterlist *sg,
int nents, enum dma_data_direction direction,
struct dma_attrs *attrs)
{
BUG();
}
static int ps3_dma_supported(struct device *_dev, u64 mask)
{
return mask >= DMA_32BIT_MASK;
}
static struct dma_mapping_ops ps3_sb_dma_ops = {
.alloc_coherent = ps3_alloc_coherent,
.free_coherent = ps3_free_coherent,
.map_sg = ps3_sb_map_sg,
.unmap_sg = ps3_sb_unmap_sg,
.dma_supported = ps3_dma_supported,
.map_page = ps3_sb_map_page,
.unmap_page = ps3_unmap_page,
};
static struct dma_mapping_ops ps3_ioc0_dma_ops = {
.alloc_coherent = ps3_alloc_coherent,
.free_coherent = ps3_free_coherent,
.map_sg = ps3_ioc0_map_sg,
.unmap_sg = ps3_ioc0_unmap_sg,
.dma_supported = ps3_dma_supported,
.map_page = ps3_ioc0_map_page,
.unmap_page = ps3_unmap_page,
};
/**
* 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 = ps3_dev_to_system_bus_dev(_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_ioc0_count;
static unsigned int dev_sb_count;
static unsigned int dev_vuart_count;
static unsigned int dev_lpm_count;
if (!dev->core.parent)
dev->core.parent = &ps3_system_bus;
dev->core.bus = &ps3_system_bus_type;
dev->core.release = ps3_system_bus_release_device;
switch (dev->dev_type) {
case PS3_DEVICE_TYPE_IOC0:
dev->core.archdata.dma_ops = &ps3_ioc0_dma_ops;
snprintf(dev->core.bus_id, sizeof(dev->core.bus_id),
"ioc0_%02x", ++dev_ioc0_count);
break;
case PS3_DEVICE_TYPE_SB:
dev->core.archdata.dma_ops = &ps3_sb_dma_ops;
snprintf(dev->core.bus_id, sizeof(dev->core.bus_id),
"sb_%02x", ++dev_sb_count);
break;
case PS3_DEVICE_TYPE_VUART:
snprintf(dev->core.bus_id, sizeof(dev->core.bus_id),
"vuart_%02x", ++dev_vuart_count);
break;
case PS3_DEVICE_TYPE_LPM:
snprintf(dev->core.bus_id, sizeof(dev->core.bus_id),
"lpm_%02x", ++dev_lpm_count);
break;
default:
BUG();
};
dev->core.archdata.of_node = NULL;
set_dev_node(&dev->core, 0);
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;
pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name);
if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
return -ENODEV;
drv->core.bus = &ps3_system_bus_type;
result = driver_register(&drv->core);
pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name);
return result;
}
EXPORT_SYMBOL_GPL(ps3_system_bus_driver_register);
void ps3_system_bus_driver_unregister(struct ps3_system_bus_driver *drv)
{
pr_debug(" -> %s:%d: %s\n", __func__, __LINE__, drv->core.name);
driver_unregister(&drv->core);
pr_debug(" <- %s:%d: %s\n", __func__, __LINE__, drv->core.name);
}
EXPORT_SYMBOL_GPL(ps3_system_bus_driver_unregister);