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[POWERPC] ps3: add support for ps3 platform

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Adds the core platform support for the PS3 game console and other devices
using the PS3 hypervisor.

Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
This commit is contained in:
Geoff Levand 2006-11-23 00:46:51 +01:00 committed by Paul Mackerras
parent a985239bdf
commit f58a9d171a
11 changed files with 1624 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
MAINTAINERS
View File

@ -2443,6 +2443,13 @@ M: promise@pnd-pc.demon.co.uk
W: http://www.pnd-pc.demon.co.uk/promise/
S: Maintained
PS3 PLATFORM SUPPORT
P: Geoff Levand
M: geoffrey.levand@am.sony.com
L: linuxppc-dev@ozlabs.org
L: cbe-oss-dev@ozlabs.org
S: Supported
PVRUSB2 VIDEO4LINUX DRIVER
P: Mike Isely
M: isely@pobox.com

11
arch/powerpc/Kconfig
View File

@ -495,6 +495,14 @@ config UDBG_RTAS_CONSOLE
depends on PPC_RTAS
default n
config PPC_PS3
bool "Sony PS3"
depends on PPC_MULTIPLATFORM && PPC64
select PPC_CELL
help
This option enables support for the Sony PS3 game console
and other platforms using the PS3 hypervisor.
config XICS
depends on PPC_PSERIES
bool
@ -647,6 +655,7 @@ source arch/powerpc/platforms/85xx/Kconfig
source arch/powerpc/platforms/86xx/Kconfig
source arch/powerpc/platforms/8xx/Kconfig
source arch/powerpc/platforms/cell/Kconfig
source arch/powerpc/platforms/ps3/Kconfig
menu "Kernel options"
@ -917,7 +926,7 @@ config MCA
config PCI
bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_86xx \
|| PPC_MPC52xx || (EMBEDDED && PPC_ISERIES) || MPC7448HPC2
|| PPC_MPC52xx || (EMBEDDED && PPC_ISERIES) || MPC7448HPC2 || PPC_PS3
default y if !40x && !CPM2 && !8xx && !APUS && !PPC_83xx \
&& !PPC_85xx && !PPC_86xx
default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS

1
arch/powerpc/platforms/Makefile
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@ -16,4 +16,5 @@ obj-$(CONFIG_PPC_ISERIES) += iseries/
obj-$(CONFIG_PPC_MAPLE) += maple/
obj-$(CONFIG_PPC_PASEMI) += pasemi/
obj-$(CONFIG_PPC_CELL) += cell/
obj-$(CONFIG_PS3) += ps3/
obj-$(CONFIG_EMBEDDED6xx) += embedded6xx/

32
arch/powerpc/platforms/ps3/Kconfig Normal file
View File

@ -0,0 +1,32 @@
menu "PS3 Platform Options"
depends on PPC_PS3
config PS3_HTAB_SIZE
depends on PPC_PS3
int "PS3 Platform pagetable size"
range 18 20
default 20
help
This option is only for experts who may have the desire to fine
tune the pagetable size on their system. The value here is
expressed as the log2 of the page table size. Valid values are
18, 19, and 20, corresponding to 256KB, 512KB and 1MB respectively.
If unsure, choose the default (20) with the confidence that your
system will have optimal runtime performance.
config PS3_DYNAMIC_DMA
depends on PPC_PS3 && EXPERIMENTAL
bool "PS3 Platform dynamic DMA page table management"
default n
help
This option will enable kernel support to take advantage of the
per device dynamic DMA page table management provided by the Cell
processor's IO Controller. This support incurs some runtime
overhead and also slightly increases kernel memory usage. The
current implementation should be considered experimental.
This support is mainly for Linux kernel development. If unsure,
say N.
endmenu

2
arch/powerpc/platforms/ps3/Makefile Normal file
View File

@ -0,0 +1,2 @@
obj-y += setup.o mm.o smp.o time.o hvcall.o htab.o repository.o
obj-y += interrupt.o exports.o

827
arch/powerpc/platforms/ps3/mm.c Normal file
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@ -0,0 +1,827 @@
/*
* PS3 address space management.
*
* 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/module.h>
#include <linux/memory_hotplug.h>
#include <asm/lmb.h>
#include <asm/udbg.h>
#include <asm/ps3.h>
#include <asm/lv1call.h>
#include "platform.h"
#if defined(DEBUG)
#define DBG(fmt...) udbg_printf(fmt)
#else
#define DBG(fmt...) do{if(0)printk(fmt);}while(0)
#endif
enum {
#if defined(CONFIG_PS3_USE_LPAR_ADDR)
USE_LPAR_ADDR = 1,
#else
USE_LPAR_ADDR = 0,
#endif
#if defined(CONFIG_PS3_DYNAMIC_DMA)
USE_DYNAMIC_DMA = 1,
#else
USE_DYNAMIC_DMA = 0,
#endif
};
enum {
PAGE_SHIFT_4K = 12U,
PAGE_SHIFT_64K = 16U,
PAGE_SHIFT_16M = 24U,
};
static unsigned long make_page_sizes(unsigned long a, unsigned long b)
{
return (a << 56) | (b << 48);
}
enum {
ALLOCATE_MEMORY_TRY_ALT_UNIT = 0X04,
ALLOCATE_MEMORY_ADDR_ZERO = 0X08,
};
/* valid htab sizes are {18,19,20} = 256K, 512K, 1M */
enum {
HTAB_SIZE_MAX = 20U, /* HV limit of 1MB */
HTAB_SIZE_MIN = 18U, /* CPU limit of 256KB */
};
/*============================================================================*/
/* virtual address space routines */
/*============================================================================*/
/**
* struct mem_region - memory region structure
* @base: base address
* @size: size in bytes
* @offset: difference between base and rm.size
*/
struct mem_region {
unsigned long base;
unsigned long size;
unsigned long offset;
};
/**
* struct map - address space state variables holder
* @total: total memory available as reported by HV
* @vas_id - HV virtual address space id
* @htab_size: htab size in bytes
*
* The HV virtual address space (vas) allows for hotplug memory regions.
* Memory regions can be created and destroyed in the vas at runtime.
* @rm: real mode (bootmem) region
* @r1: hotplug memory region(s)
*
* ps3 addresses
* virt_addr: a cpu 'translated' effective address
* phys_addr: an address in what Linux thinks is the physical address space
* lpar_addr: an address in the HV virtual address space
* bus_addr: an io controller 'translated' address on a device bus
*/
struct map {
unsigned long total;
unsigned long vas_id;
unsigned long htab_size;
struct mem_region rm;
struct mem_region r1;
};
#define debug_dump_map(x) _debug_dump_map(x, __func__, __LINE__)
static void _debug_dump_map(const struct map* m, const char* func, int line)
{
DBG("%s:%d: map.total = %lxh\n", func, line, m->total);
DBG("%s:%d: map.rm.size = %lxh\n", func, line, m->rm.size);
DBG("%s:%d: map.vas_id = %lu\n", func, line, m->vas_id);
DBG("%s:%d: map.htab_size = %lxh\n", func, line, m->htab_size);
DBG("%s:%d: map.r1.base = %lxh\n", func, line, m->r1.base);
DBG("%s:%d: map.r1.offset = %lxh\n", func, line, m->r1.offset);
DBG("%s:%d: map.r1.size = %lxh\n", func, line, m->r1.size);
}
static struct map map;
/**
* ps3_mm_phys_to_lpar - translate a linux physical address to lpar address
* @phys_addr: linux physical address
*/
unsigned long ps3_mm_phys_to_lpar(unsigned long phys_addr)
{
BUG_ON(is_kernel_addr(phys_addr));
if (USE_LPAR_ADDR)
return phys_addr;
else
return (phys_addr < map.rm.size || phys_addr >= map.total)
? phys_addr : phys_addr + map.r1.offset;
}
EXPORT_SYMBOL(ps3_mm_phys_to_lpar);
/**
* ps3_mm_vas_create - create the virtual address space
*/
void __init ps3_mm_vas_create(unsigned long* htab_size)
{
int result;
unsigned long start_address;
unsigned long size;
unsigned long access_right;
unsigned long max_page_size;
unsigned long flags;
result = lv1_query_logical_partition_address_region_info(0,
&start_address, &size, &access_right, &max_page_size,
&flags);
if (result) {
DBG("%s:%d: lv1_query_logical_partition_address_region_info "
"failed: %s\n", __func__, __LINE__,
ps3_result(result));
goto fail;
}
if (max_page_size < PAGE_SHIFT_16M) {
DBG("%s:%d: bad max_page_size %lxh\n", __func__, __LINE__,
max_page_size);
goto fail;
}
BUILD_BUG_ON(CONFIG_PS3_HTAB_SIZE > HTAB_SIZE_MAX);
BUILD_BUG_ON(CONFIG_PS3_HTAB_SIZE < HTAB_SIZE_MIN);
result = lv1_construct_virtual_address_space(CONFIG_PS3_HTAB_SIZE,
2, make_page_sizes(PAGE_SHIFT_16M, PAGE_SHIFT_64K),
&map.vas_id, &map.htab_size);
if (result) {
DBG("%s:%d: lv1_construct_virtual_address_space failed: %s\n",
__func__, __LINE__, ps3_result(result));
goto fail;
}
result = lv1_select_virtual_address_space(map.vas_id);
if (result) {
DBG("%s:%d: lv1_select_virtual_address_space failed: %s\n",
__func__, __LINE__, ps3_result(result));
goto fail;
}
*htab_size = map.htab_size;
debug_dump_map(&map);
return;
fail:
panic("ps3_mm_vas_create failed");
}
/**
* ps3_mm_vas_destroy -
*/
void ps3_mm_vas_destroy(void)
{
if (map.vas_id) {
lv1_select_virtual_address_space(0);
lv1_destruct_virtual_address_space(map.vas_id);
map.vas_id = 0;
}
}
/*============================================================================*/
/* memory hotplug routines */
/*============================================================================*/
/**
* ps3_mm_region_create - create a memory region in the vas
* @r: pointer to a struct mem_region to accept initialized values
* @size: requested region size
*
* This implementation creates the region with the vas large page size.
* @size is rounded down to a multiple of the vas large page size.
*/
int ps3_mm_region_create(struct mem_region *r, unsigned long size)
{
int result;
unsigned long muid;
r->size = _ALIGN_DOWN(size, 1 << PAGE_SHIFT_16M);
DBG("%s:%d requested %lxh\n", __func__, __LINE__, size);
DBG("%s:%d actual %lxh\n", __func__, __LINE__, r->size);
DBG("%s:%d difference %lxh (%luMB)\n", __func__, __LINE__,
(unsigned long)(size - r->size),
(size - r->size) / 1024 / 1024);
if (r->size == 0) {
DBG("%s:%d: size == 0\n", __func__, __LINE__);
result = -1;
goto zero_region;
}
result = lv1_allocate_memory(r->size, PAGE_SHIFT_16M, 0,
ALLOCATE_MEMORY_TRY_ALT_UNIT, &r->base, &muid);
if (result || r->base < map.rm.size) {
DBG("%s:%d: lv1_allocate_memory failed: %s\n",
__func__, __LINE__, ps3_result(result));
goto zero_region;
}
r->offset = r->base - map.rm.size;
return result;
zero_region:
r->size = r->base = r->offset = 0;
return result;
}
/**
* ps3_mm_region_destroy - destroy a memory region
* @r: pointer to struct mem_region
*/
void ps3_mm_region_destroy(struct mem_region *r)
{
if (r->base) {
lv1_release_memory(r->base);
r->size = r->base = r->offset = 0;
map.total = map.rm.size;
}
}
/**
* ps3_mm_add_memory - hot add memory
*/
static int __init ps3_mm_add_memory(void)
{
int result;
unsigned long start_addr;
unsigned long start_pfn;
unsigned long nr_pages;
BUG_ON(!mem_init_done);
start_addr = USE_LPAR_ADDR ? map.r1.base : map.rm.size;
start_pfn = start_addr >> PAGE_SHIFT;
nr_pages = (map.r1.size + PAGE_SIZE - 1) >> PAGE_SHIFT;
DBG("%s:%d: start_addr %lxh, start_pfn %lxh, nr_pages %lxh\n",
__func__, __LINE__, start_addr, start_pfn, nr_pages);
result = add_memory(0, start_addr, map.r1.size);
if (result) {
DBG("%s:%d: add_memory failed: (%d)\n",
__func__, __LINE__, result);
return result;
}
result = online_pages(start_pfn, nr_pages);
if (result)
DBG("%s:%d: online_pages failed: (%d)\n",
__func__, __LINE__, result);
return result;
}
core_initcall(ps3_mm_add_memory);
/*============================================================================*/
/* dma routines */
/*============================================================================*/
/**
* dma_lpar_to_bus - Translate an lpar address to ioc mapped bus address.
* @r: pointer to dma region structure
* @lpar_addr: HV lpar address
*/
static unsigned long dma_lpar_to_bus(struct ps3_dma_region *r,
unsigned long lpar_addr)
{
BUG_ON(lpar_addr >= map.r1.base + map.r1.size);
return r->bus_addr + (lpar_addr <= map.rm.size ? lpar_addr
: lpar_addr - map.r1.offset);
}
#define dma_dump_region(_a) _dma_dump_region(_a, __func__, __LINE__)
static void _dma_dump_region(const struct ps3_dma_region *r, const char* func,
int line)
{
DBG("%s:%d: dev %u:%u\n", func, line, r->did.bus_id,
r->did.dev_id);
DBG("%s:%d: page_size %u\n", func, line, r->page_size);
DBG("%s:%d: bus_addr %lxh\n", func, line, r->bus_addr);
DBG("%s:%d: len %lxh\n", func, line, r->len);
}
/**
* dma_chunk - A chunk of dma pages mapped by the io controller.
* @region - The dma region that owns this chunk.
* @lpar_addr: Starting lpar address of the area to map.
* @bus_addr: Starting ioc bus address of the area to map.
* @len: Length in bytes of the area to map.
* @link: A struct list_head used with struct ps3_dma_region.chunk_list, the
* list of all chuncks owned by the region.
*
* This implementation uses a very simple dma page manager
* based on the dma_chunk structure. This scheme assumes
* that all drivers use very well behaved dma ops.
*/
struct dma_chunk {
struct ps3_dma_region *region;
unsigned long lpar_addr;
unsigned long bus_addr;
unsigned long len;
struct list_head link;
unsigned int usage_count;
};
#define dma_dump_chunk(_a) _dma_dump_chunk(_a, __func__, __LINE__)
static void _dma_dump_chunk (const struct dma_chunk* c, const char* func,
int line)
{
DBG("%s:%d: r.dev %u:%u\n", func, line,
c->region->did.bus_id, c->region->did.dev_id);
DBG("%s:%d: r.bus_addr %lxh\n", func, line, c->region->bus_addr);
DBG("%s:%d: r.page_size %u\n", func, line, c->region->page_size);
DBG("%s:%d: r.len %lxh\n", func, line, c->region->len);
DBG("%s:%d: c.lpar_addr %lxh\n", func, line, c->lpar_addr);
DBG("%s:%d: c.bus_addr %lxh\n", func, line, c->bus_addr);
DBG("%s:%d: c.len %lxh\n", func, line, c->len);
}
static struct dma_chunk * dma_find_chunk(struct ps3_dma_region *r,
unsigned long bus_addr, unsigned long len)
{
struct dma_chunk *c;
unsigned long aligned_bus = _ALIGN_DOWN(bus_addr, 1 << r->page_size);
unsigned long aligned_len = _ALIGN_UP(len, 1 << r->page_size);
list_for_each_entry(c, &r->chunk_list.head, link) {
/* intersection */
if (aligned_bus >= c->bus_addr
&& aligned_bus < c->bus_addr + c->len
&& aligned_bus + aligned_len <= c->bus_addr + c->len) {
return c;
}
/* below */
if (aligned_bus + aligned_len <= c->bus_addr) {
continue;
}
/* above */
if (aligned_bus >= c->bus_addr + c->len) {
continue;
}
/* we don't handle the multi-chunk case for now */
dma_dump_chunk(c);
BUG();
}
return NULL;
}
static int dma_free_chunk(struct dma_chunk *c)
{
int result = 0;
if (c->bus_addr) {
result = lv1_unmap_device_dma_region(c->region->did.bus_id,
c->region->did.dev_id, c->bus_addr, c->len);
BUG_ON(result);
}
kfree(c);
return result;
}
/**
* dma_map_pages - Maps dma pages into the io controller bus address space.
* @r: Pointer to a struct ps3_dma_region.
* @phys_addr: Starting physical address of the area to map.
* @len: Length in bytes of the area to map.
* c_out: A pointer to receive an allocated struct dma_chunk for this area.
*
* This is the lowest level dma mapping routine, and is the one that will
* make the HV call to add the pages into the io controller address space.
*/
static int dma_map_pages(struct ps3_dma_region *r, unsigned long phys_addr,
unsigned long len, struct dma_chunk **c_out)
{
int result;
struct dma_chunk *c;
c = kzalloc(sizeof(struct dma_chunk), GFP_ATOMIC);
if (!c) {
result = -ENOMEM;
goto fail_alloc;
}
c->region = r;
c->lpar_addr = ps3_mm_phys_to_lpar(phys_addr);
c->bus_addr = dma_lpar_to_bus(r, c->lpar_addr);
c->len = len;
result = lv1_map_device_dma_region(c->region->did.bus_id,
c->region->did.dev_id, c->lpar_addr, c->bus_addr, c->len,
0xf800000000000000UL);
if (result) {
DBG("%s:%d: lv1_map_device_dma_region failed: %s\n",
__func__, __LINE__, ps3_result(result));
goto fail_map;
}
list_add(&c->link, &r->chunk_list.head);
*c_out = c;
return 0;
fail_map:
kfree(c);
fail_alloc:
*c_out = NULL;
DBG(" <- %s:%d\n", __func__, __LINE__);
return result;
}
/**
* dma_region_create - Create a device dma region.
* @r: Pointer to a struct ps3_dma_region.
*
* This is the lowest level dma region create routine, and is the one that
* will make the HV call to create the region.
*/
static int dma_region_create(struct ps3_dma_region* r)
{
int result;
r->len = _ALIGN_UP(map.total, 1 << r->page_size);
INIT_LIST_HEAD(&r->chunk_list.head);
spin_lock_init(&r->chunk_list.lock);
result = lv1_allocate_device_dma_region(r->did.bus_id, r->did.dev_id,
r->len, r->page_size, r->region_type, &r->bus_addr);
dma_dump_region(r);
if (result) {
DBG("%s:%d: lv1_allocate_device_dma_region failed: %s\n",
__func__, __LINE__, ps3_result(result));
r->len = r->bus_addr = 0;
}
return result;
}
/**
* dma_region_free - Free a device dma region.
* @r: Pointer to a struct ps3_dma_region.
*
* This is the lowest level dma region free routine, and is the one that
* will make the HV call to free the region.
*/
static int dma_region_free(struct ps3_dma_region* r)
{
int result;
struct dma_chunk *c;
struct dma_chunk *tmp;
list_for_each_entry_safe(c, tmp, &r->chunk_list.head, link) {
list_del(&c->link);
dma_free_chunk(c);
}
result = lv1_free_device_dma_region(r->did.bus_id, r->did.dev_id,
r->bus_addr);
if (result)
DBG("%s:%d: lv1_free_device_dma_region failed: %s\n",
__func__, __LINE__, ps3_result(result));
r->len = r->bus_addr = 0;
return result;
}
/**
* dma_map_area - Map an area of memory into a device dma region.
* @r: Pointer to a struct ps3_dma_region.
* @virt_addr: Starting virtual address of the area to map.
* @len: Length in bytes of the area to map.
* @bus_addr: A pointer to return the starting ioc bus address of the area to
* map.
*
* This is the common dma mapping routine.
*/
static int dma_map_area(struct ps3_dma_region *r, unsigned long virt_addr,
unsigned long len, unsigned long *bus_addr)
{
int result;
unsigned long flags;
struct dma_chunk *c;
unsigned long phys_addr = is_kernel_addr(virt_addr) ? __pa(virt_addr)
: virt_addr;
*bus_addr = dma_lpar_to_bus(r, ps3_mm_phys_to_lpar(phys_addr));
if (!USE_DYNAMIC_DMA) {
unsigned long lpar_addr = ps3_mm_phys_to_lpar(phys_addr);
DBG(" -> %s:%d\n", __func__, __LINE__);
DBG("%s:%d virt_addr %lxh\n", __func__, __LINE__,
virt_addr);
DBG("%s:%d phys_addr %lxh\n", __func__, __LINE__,
phys_addr);
DBG("%s:%d lpar_addr %lxh\n", __func__, __LINE__,
lpar_addr);
DBG("%s:%d len %lxh\n", __func__, __LINE__, len);
DBG("%s:%d bus_addr %lxh (%lxh)\n", __func__, __LINE__,
*bus_addr, len);
}
spin_lock_irqsave(&r->chunk_list.lock, flags);
c = dma_find_chunk(r, *bus_addr, len);
if (c) {
c->usage_count++;
spin_unlock_irqrestore(&r->chunk_list.lock, flags);
return 0;
}
result = dma_map_pages(r, _ALIGN_DOWN(phys_addr, 1 << r->page_size),
_ALIGN_UP(len, 1 << r->page_size), &c);
if (result) {
*bus_addr = 0;
DBG("%s:%d: dma_map_pages failed (%d)\n",
__func__, __LINE__, result);
spin_unlock_irqrestore(&r->chunk_list.lock, flags);
return result;
}
c->usage_count = 1;
spin_unlock_irqrestore(&r->chunk_list.lock, flags);
return result;
}
/**
* dma_unmap_area - Unmap an area of memory from a device dma region.
* @r: Pointer to a struct ps3_dma_region.
* @bus_addr: The starting ioc bus address of the area to unmap.
* @len: Length in bytes of the area to unmap.
*
* This is the common dma unmap routine.
*/
int dma_unmap_area(struct ps3_dma_region *r, unsigned long bus_addr,
unsigned long len)
{
unsigned long flags;
struct dma_chunk *c;
spin_lock_irqsave(&r->chunk_list.lock, flags);
c = dma_find_chunk(r, bus_addr, len);
if (!c) {
unsigned long aligned_bus = _ALIGN_DOWN(bus_addr,
1 << r->page_size);
unsigned long aligned_len = _ALIGN_UP(len, 1 << r->page_size);
DBG("%s:%d: not found: bus_addr %lxh\n",
__func__, __LINE__, bus_addr);
DBG("%s:%d: not found: len %lxh\n",
__func__, __LINE__, len);
DBG("%s:%d: not found: aligned_bus %lxh\n",
__func__, __LINE__, aligned_bus);
DBG("%s:%d: not found: aligned_len %lxh\n",
__func__, __LINE__, aligned_len);
BUG();
}
c->usage_count--;
if (!c->usage_count) {
list_del(&c->link);
dma_free_chunk(c);
}
spin_unlock_irqrestore(&r->chunk_list.lock, flags);
return 0;
}
/**
* dma_region_create_linear - Setup a linear dma maping for a device.
* @r: Pointer to a struct ps3_dma_region.
*
* This routine creates an HV dma region for the device and maps all available
* ram into the io controller bus address space.
*/
static int dma_region_create_linear(struct ps3_dma_region *r)
{
int result;
unsigned long tmp;
/* force 16M dma pages for linear mapping */
if (r->page_size != PS3_DMA_16M) {
pr_info("%s:%d: forcing 16M pages for linear map\n",
__func__, __LINE__);
r->page_size = PS3_DMA_16M;
}
result = dma_region_create(r);
BUG_ON(result);
result = dma_map_area(r, map.rm.base, map.rm.size, &tmp);
BUG_ON(result);
if (USE_LPAR_ADDR)
result = dma_map_area(r, map.r1.base, map.r1.size,
&tmp);
else
result = dma_map_area(r, map.rm.size, map.r1.size,
&tmp);
BUG_ON(result);
return result;
}
/**
* dma_region_free_linear - Free a linear dma mapping for a device.
* @r: Pointer to a struct ps3_dma_region.
*
* This routine will unmap all mapped areas and free the HV dma region.
*/
static int dma_region_free_linear(struct ps3_dma_region *r)
{
int result;
result = dma_unmap_area(r, dma_lpar_to_bus(r, 0), map.rm.size);
BUG_ON(result);
result = dma_unmap_area(r, dma_lpar_to_bus(r, map.r1.base),
map.r1.size);
BUG_ON(result);
result = dma_region_free(r);
BUG_ON(result);
return result;
}
/**
* dma_map_area_linear - Map an area of memory into a device dma region.
* @r: Pointer to a struct ps3_dma_region.
* @virt_addr: Starting virtual address of the area to map.
* @len: Length in bytes of the area to map.
* @bus_addr: A pointer to return the starting ioc bus address of the area to
* map.
*
* This routine just returns the coresponding bus address. Actual mapping
* occurs in dma_region_create_linear().
*/
static int dma_map_area_linear(struct ps3_dma_region *r,
unsigned long virt_addr, unsigned long len, unsigned long *bus_addr)
{
unsigned long phys_addr = is_kernel_addr(virt_addr) ? __pa(virt_addr)
: virt_addr;
*bus_addr = dma_lpar_to_bus(r, ps3_mm_phys_to_lpar(phys_addr));
return 0;
}
/**
* dma_unmap_area_linear - Unmap an area of memory from a device dma region.
* @r: Pointer to a struct ps3_dma_region.
* @bus_addr: The starting ioc bus address of the area to unmap.
* @len: Length in bytes of the area to unmap.
*
* This routine does nothing. Unmapping occurs in dma_region_free_linear().
*/
static int dma_unmap_area_linear(struct ps3_dma_region *r,
unsigned long bus_addr, unsigned long len)
{
return 0;
}
int ps3_dma_region_create(struct ps3_dma_region *r)
{
return (USE_DYNAMIC_DMA)
? dma_region_create(r)
: dma_region_create_linear(r);
}
int ps3_dma_region_free(struct ps3_dma_region *r)
{
return (USE_DYNAMIC_DMA)
? dma_region_free(r)
: dma_region_free_linear(r);
}
int ps3_dma_map(struct ps3_dma_region *r, unsigned long virt_addr,
unsigned long len, unsigned long *bus_addr)
{
return (USE_DYNAMIC_DMA)
? dma_map_area(r, virt_addr, len, bus_addr)
: dma_map_area_linear(r, virt_addr, len, bus_addr);
}
int ps3_dma_unmap(struct ps3_dma_region *r, unsigned long bus_addr,
unsigned long len)
{
return (USE_DYNAMIC_DMA) ? dma_unmap_area(r, bus_addr, len)
: dma_unmap_area_linear(r, bus_addr, len);
}
/*============================================================================*/
/* system startup routines */
/*============================================================================*/
/**
* ps3_mm_init - initialize the address space state variables
*/
void __init ps3_mm_init(void)
{
int result;
DBG(" -> %s:%d\n", __func__, __LINE__);
result = ps3_repository_read_mm_info(&map.rm.base, &map.rm.size,
&map.total);
if (result)
panic("ps3_repository_read_mm_info() failed");
map.rm.offset = map.rm.base;
map.vas_id = map.htab_size = 0;
/* this implementation assumes map.rm.base is zero */
BUG_ON(map.rm.base);
BUG_ON(!map.rm.size);
lmb_add(map.rm.base, map.rm.size);
lmb_analyze();
/* arrange to do this in ps3_mm_add_memory */
ps3_mm_region_create(&map.r1, map.total - map.rm.size);
DBG(" <- %s:%d\n", __func__, __LINE__);
}
/**
* ps3_mm_shutdown - final cleanup of address space
*/
void ps3_mm_shutdown(void)
{
ps3_mm_region_destroy(&map.r1);
map.total = map.rm.size;
}

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/*
* PS3 platform declarations.
*
* 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
*/
#if !defined(_PS3_PLATFORM_H)
#define _PS3_PLATFORM_H
#include <linux/rtc.h>
/* htab */
void __init ps3_hpte_init(unsigned long htab_size);
void __init ps3_map_htab(void);
/* mm */
void __init ps3_mm_init(void);
void __init ps3_mm_vas_create(unsigned long* htab_size);
void ps3_mm_vas_destroy(void);
void ps3_mm_shutdown(void);
/* irq */
void ps3_init_IRQ(void);
void __init ps3_register_ipi_debug_brk(unsigned int cpu, unsigned int virq);
/* smp */
void smp_init_ps3(void);
void ps3_smp_cleanup_cpu(int cpu);
/* time */
void __init ps3_calibrate_decr(void);
unsigned long __init ps3_get_boot_time(void);
void ps3_get_rtc_time(struct rtc_time *time);
int ps3_set_rtc_time(struct rtc_time *time);
/* os area */
int __init ps3_os_area_init(void);
u64 ps3_os_area_rtc_diff(void);
#endif

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/*
* PS3 platform setup routines.
*
* 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/delay.h>
#include <linux/fs.h>
#include <linux/root_dev.h>
#include <linux/console.h>
#include <linux/kexec.h>
#include <asm/machdep.h>
#include <asm/firmware.h>
#include <asm/time.h>
#include <asm/iommu.h>
#include <asm/udbg.h>
#include <asm/prom.h>
#include <asm/lv1call.h>
#include "platform.h"
#if defined(DEBUG)
#define DBG(fmt...) udbg_printf(fmt)
#else
#define DBG(fmt...) do{if(0)printk(fmt);}while(0)
#endif
static void ps3_show_cpuinfo(struct seq_file *m)
{
seq_printf(m, "machine\t\t: %s\n", ppc_md.name);
}
static void ps3_power_save(void)
{
/*
* lv1_pause() puts the PPE thread into inactive state until an
* irq on an unmasked plug exists. MSR[EE] has no effect.
* flags: 0 = wake on DEC interrupt, 1 = ignore DEC interrupt.
*/
lv1_pause(0);
}
static void ps3_panic(char *str)
{
DBG("%s:%d %s\n", __func__, __LINE__, str);
#ifdef CONFIG_SMP
smp_send_stop();
#endif
printk("\n");
printk(" System does not reboot automatically.\n");
printk(" Please press POWER button.\n");
printk("\n");
for (;;) ;
}
static void __init ps3_setup_arch(void)
{
DBG(" -> %s:%d\n", __func__, __LINE__);
ps3_spu_set_platform();
ps3_map_htab();
#ifdef CONFIG_SMP
smp_init_ps3();
#endif
#ifdef CONFIG_DUMMY_CONSOLE
conswitchp = &dummy_con;
#endif
ppc_md.power_save = ps3_power_save;
DBG(" <- %s:%d\n", __func__, __LINE__);
}
static void __init ps3_progress(char *s, unsigned short hex)
{
printk("*** %04x : %s\n", hex, s ? s : "");
}
static int __init ps3_probe(void)
{
unsigned long htab_size;
unsigned long dt_root;
DBG(" -> %s:%d\n", __func__, __LINE__);
dt_root = of_get_flat_dt_root();
if (!of_flat_dt_is_compatible(dt_root, "PS3"))
return 0;
powerpc_firmware_features |= FW_FEATURE_LPAR;
ps3_os_area_init();
ps3_mm_init();
ps3_mm_vas_create(&htab_size);
ps3_hpte_init(htab_size);
DBG(" <- %s:%d\n", __func__, __LINE__);
return 1;
}
#if defined(CONFIG_KEXEC)
static void ps3_kexec_cpu_down(int crash_shutdown, int secondary)
{
DBG(" -> %s:%d\n", __func__, __LINE__);
if (secondary) {
int cpu;
for_each_online_cpu(cpu)
if (cpu)
ps3_smp_cleanup_cpu(cpu);
} else
ps3_smp_cleanup_cpu(0);
DBG(" <- %s:%d\n", __func__, __LINE__);
}
static void ps3_machine_kexec(struct kimage *image)
{
unsigned long ppe_id;
DBG(" -> %s:%d\n", __func__, __LINE__);
lv1_get_logical_ppe_id(&ppe_id);
lv1_configure_irq_state_bitmap(ppe_id, 0, 0);
ps3_mm_shutdown();
ps3_mm_vas_destroy();
default_machine_kexec(image);
DBG(" <- %s:%d\n", __func__, __LINE__);
}
#endif
define_machine(ps3) {
.name = "PS3",
.probe = ps3_probe,
.setup_arch = ps3_setup_arch,
.show_cpuinfo = ps3_show_cpuinfo,
.init_IRQ = ps3_init_IRQ,
.panic = ps3_panic,
.get_boot_time = ps3_get_boot_time,
.set_rtc_time = ps3_set_rtc_time,
.get_rtc_time = ps3_get_rtc_time,
.calibrate_decr = ps3_calibrate_decr,
.progress = ps3_progress,
#if defined(CONFIG_KEXEC)
.kexec_cpu_down = ps3_kexec_cpu_down,
.machine_kexec = ps3_machine_kexec,
.machine_kexec_prepare = default_machine_kexec_prepare,
.machine_crash_shutdown = default_machine_crash_shutdown,
#endif
};

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/*
* PS3 SMP routines.
*
* 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/smp.h>
#include <asm/machdep.h>
#include <asm/udbg.h>
#include <asm/ps3.h>
#include "platform.h"
#if defined(DEBUG)
#define DBG(fmt...) udbg_printf(fmt)
#else
#define DBG(fmt...) do{if(0)printk(fmt);}while(0)
#endif
static irqreturn_t ipi_function_handler(int irq, void *msg)
{
smp_message_recv((int)(long)msg);
return IRQ_HANDLED;
}
/**
* virqs - a per cpu array of virqs for ipi use
*/
#define MSG_COUNT 4
static DEFINE_PER_CPU(unsigned int, virqs[MSG_COUNT]);
static const char *names[MSG_COUNT] = {
"ipi call",
"ipi reschedule",
"ipi migrate",
"ipi debug brk"
};
static void do_message_pass(int target, int msg)
{
int result;
unsigned int virq;
if (msg >= MSG_COUNT) {
DBG("%s:%d: bad msg: %d\n", __func__, __LINE__, msg);
return;
}
virq = per_cpu(virqs, target)[msg];
result = ps3_send_event_locally(virq);
if (result)
DBG("%s:%d: ps3_send_event_locally(%d, %d) failed"
" (%d)\n", __func__, __LINE__, target, msg, result);
}
static void ps3_smp_message_pass(int target, int msg)
{
int cpu;
if (target < NR_CPUS)
do_message_pass(target, msg);
else if (target == MSG_ALL_BUT_SELF) {
for_each_online_cpu(cpu)
if (cpu != smp_processor_id())
do_message_pass(cpu, msg);
} else {
for_each_online_cpu(cpu)
do_message_pass(cpu, msg);
}
}
static int ps3_smp_probe(void)
{
return 2;
}
static void __init ps3_smp_setup_cpu(int cpu)
{
int result;
unsigned int *virqs = per_cpu(virqs, cpu);
int i;
DBG(" -> %s:%d: (%d)\n", __func__, __LINE__, cpu);
/*
* Check assumptions on virqs[] indexing. If this
* check fails, then a different mapping of PPC_MSG_
* to index needs to be setup.
*/
BUILD_BUG_ON(PPC_MSG_CALL_FUNCTION != 0);
BUILD_BUG_ON(PPC_MSG_RESCHEDULE != 1);
BUILD_BUG_ON(PPC_MSG_DEBUGGER_BREAK != 3);
for (i = 0; i < MSG_COUNT; i++) {
result = ps3_alloc_event_irq(&virqs[i]);
if (result)
continue;
DBG("%s:%d: (%d, %d) => virq %u\n",
__func__, __LINE__, cpu, i, virqs[i]);
request_irq(virqs[i], ipi_function_handler, IRQF_DISABLED,
names[i], (void*)(long)i);
}
ps3_register_ipi_debug_brk(cpu, virqs[PPC_MSG_DEBUGGER_BREAK]);
DBG(" <- %s:%d: (%d)\n", __func__, __LINE__, cpu);
}
void ps3_smp_cleanup_cpu(int cpu)
{
unsigned int *virqs = per_cpu(virqs, cpu);
int i;
DBG(" -> %s:%d: (%d)\n", __func__, __LINE__, cpu);
for (i = 0; i < MSG_COUNT; i++) {
ps3_free_event_irq(virqs[i]);
free_irq(virqs[i], (void*)(long)i);
virqs[i] = NO_IRQ;
}
DBG(" <- %s:%d: (%d)\n", __func__, __LINE__, cpu);
}
static struct smp_ops_t ps3_smp_ops = {
.probe = ps3_smp_probe,
.message_pass = ps3_smp_message_pass,
.kick_cpu = smp_generic_kick_cpu,
.setup_cpu = ps3_smp_setup_cpu,
};
void smp_init_ps3(void)
{
DBG(" -> %s\n", __func__);
smp_ops = &ps3_smp_ops;
DBG(" <- %s\n", __func__);
}

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/*
* PS3 time and rtc routines.
*
* 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 <asm/rtc.h>
#include <asm/lv1call.h>
#include <asm/ps3.h>
#include "platform.h"
#define dump_tm(_a) _dump_tm(_a, __func__, __LINE__)
static void _dump_tm(const struct rtc_time *tm, const char* func, int line)
{
pr_debug("%s:%d tm_sec %d\n", func, line, tm->tm_sec);
pr_debug("%s:%d tm_min %d\n", func, line, tm->tm_min);
pr_debug("%s:%d tm_hour %d\n", func, line, tm->tm_hour);
pr_debug("%s:%d tm_mday %d\n", func, line, tm->tm_mday);
pr_debug("%s:%d tm_mon %d\n", func, line, tm->tm_mon);
pr_debug("%s:%d tm_year %d\n", func, line, tm->tm_year);
pr_debug("%s:%d tm_wday %d\n", func, line, tm->tm_wday);
}
#define dump_time(_a) _dump_time(_a, __func__, __LINE__)
static void __attribute__ ((unused)) _dump_time(int time, const char* func,
int line)
{
struct rtc_time tm;
to_tm(time, &tm);
pr_debug("%s:%d time %d\n", func, line, time);
_dump_tm(&tm, func, line);
}
/**
* rtc_shift - Difference in seconds between 1970 and the ps3 rtc value.
*/
static s64 rtc_shift;
void __init ps3_calibrate_decr(void)
{
int result;
u64 tmp;
result = ps3_repository_read_be_tb_freq(0, &tmp);
BUG_ON(result);
ppc_tb_freq = tmp;
ppc_proc_freq = ppc_tb_freq * 40;
rtc_shift = ps3_os_area_rtc_diff();
}
static u64 read_rtc(void)
{
int result;
u64 rtc_val;
u64 tb_val;
result = lv1_get_rtc(&rtc_val, &tb_val);
BUG_ON(result);
return rtc_val;
}
int ps3_set_rtc_time(struct rtc_time *tm)
{
u64 now = mktime(tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
tm->tm_hour, tm->tm_min, tm->tm_sec);
rtc_shift = now - read_rtc();
return 0;
}
void ps3_get_rtc_time(struct rtc_time *tm)
{
to_tm(read_rtc() + rtc_shift, tm);
tm->tm_year -= 1900;
tm->tm_mon -= 1;
}
unsigned long __init ps3_get_boot_time(void)
{
return read_rtc() + rtc_shift;
}

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/*
* PS3 platform declarations.
*
* 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
*/
#if !defined(_ASM_POWERPC_PS3_H)
#define _ASM_POWERPC_PS3_H
#include <linux/compiler.h> /* for __deprecated */
#include <linux/init.h>
#include <linux/types.h>
#include <linux/device.h>
/**
* struct ps3_device_id - HV bus device identifier from the system repository
* @bus_id: HV bus id, {1..} (zero invalid)
* @dev_id: HV device id, {0..}
*/
struct ps3_device_id {
unsigned int bus_id;
unsigned int dev_id;
};
/* dma routines */
enum ps3_dma_page_size {
PS3_DMA_4K = 12U,
PS3_DMA_64K = 16U,
PS3_DMA_1M = 20U,
PS3_DMA_16M = 24U,
};
enum ps3_dma_region_type {
PS3_DMA_OTHER = 0,
PS3_DMA_INTERNAL = 2,
};
/**
* struct ps3_dma_region - A per device dma state variables structure
* @did: The HV device id.
* @page_size: The ioc pagesize.
* @region_type: The HV region type.
* @bus_addr: The 'translated' bus address of the region.
* @len: The length in bytes of the region.
* @chunk_list: Opaque variable used by the ioc page manager.
*/
struct ps3_dma_region {
struct ps3_device_id did;
enum ps3_dma_page_size page_size;
enum ps3_dma_region_type region_type;
unsigned long bus_addr;
unsigned long len;
struct {
spinlock_t lock;
struct list_head head;
} chunk_list;
};
/**
* struct ps3_dma_region_init - Helper to initialize structure variables
*
* Helper to properly initialize variables prior to calling
* ps3_system_bus_device_register.
*/
static inline void ps3_dma_region_init(struct ps3_dma_region *r,
const struct ps3_device_id* did, enum ps3_dma_page_size page_size,
enum ps3_dma_region_type region_type)
{
r->did = *did;
r->page_size = page_size;
r->region_type = region_type;
}
int ps3_dma_region_create(struct ps3_dma_region *r);
int ps3_dma_region_free(struct ps3_dma_region *r);
int ps3_dma_map(struct ps3_dma_region *r, unsigned long virt_addr,
unsigned long len, unsigned long *bus_addr);
int ps3_dma_unmap(struct ps3_dma_region *r, unsigned long bus_addr,
unsigned long len);
/* mmio routines */
enum ps3_mmio_page_size {
PS3_MMIO_4K = 12U,
PS3_MMIO_64K = 16U
};
/**
* struct ps3_mmio_region - a per device mmio state variables structure
*
* Current systems can be supported with a single region per device.
*/
struct ps3_mmio_region {
struct ps3_device_id did;
unsigned long bus_addr;
unsigned long len;
enum ps3_mmio_page_size page_size;
unsigned long lpar_addr;
};
/**
* struct ps3_mmio_region_init - Helper to initialize structure variables
*
* Helper to properly initialize variables prior to calling
* ps3_system_bus_device_register.
*/
static inline void ps3_mmio_region_init(struct ps3_mmio_region *r,
const struct ps3_device_id* did, unsigned long bus_addr,
unsigned long len, enum ps3_mmio_page_size page_size)
{
r->did = *did;
r->bus_addr = bus_addr;
r->len = len;
r->page_size = page_size;
}
int ps3_mmio_region_create(struct ps3_mmio_region *r);
int ps3_free_mmio_region(struct ps3_mmio_region *r);
unsigned long ps3_mm_phys_to_lpar(unsigned long phys_addr);
/* inrerrupt routines */
int ps3_alloc_io_irq(unsigned int interrupt_id, unsigned int *virq);
int ps3_free_io_irq(unsigned int virq);
int ps3_alloc_event_irq(unsigned int *virq);
int ps3_free_event_irq(unsigned int virq);
int ps3_send_event_locally(unsigned int virq);
int ps3_connect_event_irq(const struct ps3_device_id *did,
unsigned int interrupt_id, unsigned int *virq);
int ps3_disconnect_event_irq(const struct ps3_device_id *did,
unsigned int interrupt_id, unsigned int virq);
int ps3_alloc_vuart_irq(void* virt_addr_bmp, unsigned int *virq);
int ps3_free_vuart_irq(unsigned int virq);
int ps3_alloc_spe_irq(unsigned long spe_id, unsigned int class,
unsigned int *virq);
int ps3_free_spe_irq(unsigned int virq);
/* lv1 result codes */
enum lv1_result {
LV1_SUCCESS = 0,
/* not used -1 */
LV1_RESOURCE_SHORTAGE = -2,
LV1_NO_PRIVILEGE = -3,
LV1_DENIED_BY_POLICY = -4,
LV1_ACCESS_VIOLATION = -5,
LV1_NO_ENTRY = -6,
LV1_DUPLICATE_ENTRY = -7,
LV1_TYPE_MISMATCH = -8,
LV1_BUSY = -9,
LV1_EMPTY = -10,
LV1_WRONG_STATE = -11,
/* not used -12 */
LV1_NO_MATCH = -13,
LV1_ALREADY_CONNECTED = -14,
LV1_UNSUPPORTED_PARAMETER_VALUE = -15,
LV1_CONDITION_NOT_SATISFIED = -16,
LV1_ILLEGAL_PARAMETER_VALUE = -17,
LV1_BAD_OPTION = -18,
LV1_IMPLEMENTATION_LIMITATION = -19,
LV1_NOT_IMPLEMENTED = -20,
LV1_INVALID_CLASS_ID = -21,
LV1_CONSTRAINT_NOT_SATISFIED = -22,
LV1_ALIGNMENT_ERROR = -23,
LV1_INTERNAL_ERROR = -32768,
};
static inline const char* ps3_result(int result)
{
#if defined(DEBUG)
switch (result) {
case LV1_SUCCESS:
return "LV1_SUCCESS (0)";
case -1:
return "** unknown result ** (-1)";
case LV1_RESOURCE_SHORTAGE:
return "LV1_RESOURCE_SHORTAGE (-2)";
case LV1_NO_PRIVILEGE:
return "LV1_NO_PRIVILEGE (-3)";
case LV1_DENIED_BY_POLICY:
return "LV1_DENIED_BY_POLICY (-4)";
case LV1_ACCESS_VIOLATION:
return "LV1_ACCESS_VIOLATION (-5)";
case LV1_NO_ENTRY:
return "LV1_NO_ENTRY (-6)";
case LV1_DUPLICATE_ENTRY:
return "LV1_DUPLICATE_ENTRY (-7)";
case LV1_TYPE_MISMATCH:
return "LV1_TYPE_MISMATCH (-8)";
case LV1_BUSY:
return "LV1_BUSY (-9)";
case LV1_EMPTY:
return "LV1_EMPTY (-10)";
case LV1_WRONG_STATE:
return "LV1_WRONG_STATE (-11)";
case -12:
return "** unknown result ** (-12)";
case LV1_NO_MATCH:
return "LV1_NO_MATCH (-13)";
case LV1_ALREADY_CONNECTED:
return "LV1_ALREADY_CONNECTED (-14)";
case LV1_UNSUPPORTED_PARAMETER_VALUE:
return "LV1_UNSUPPORTED_PARAMETER_VALUE (-15)";
case LV1_CONDITION_NOT_SATISFIED:
return "LV1_CONDITION_NOT_SATISFIED (-16)";
case LV1_ILLEGAL_PARAMETER_VALUE:
return "LV1_ILLEGAL_PARAMETER_VALUE (-17)";
case LV1_BAD_OPTION:
return "LV1_BAD_OPTION (-18)";
case LV1_IMPLEMENTATION_LIMITATION:
return "LV1_IMPLEMENTATION_LIMITATION (-19)";
case LV1_NOT_IMPLEMENTED:
return "LV1_NOT_IMPLEMENTED (-20)";
case LV1_INVALID_CLASS_ID:
return "LV1_INVALID_CLASS_ID (-21)";
case LV1_CONSTRAINT_NOT_SATISFIED:
return "LV1_CONSTRAINT_NOT_SATISFIED (-22)";
case LV1_ALIGNMENT_ERROR:
return "LV1_ALIGNMENT_ERROR (-23)";
case LV1_INTERNAL_ERROR:
return "LV1_INTERNAL_ERROR (-32768)";
default:
BUG();
return "** unknown result **";
};
#else
return "";
#endif
}
#endif