adulau/aha
1
0
Fork 0
mirror of https://github.com/adulau/aha.git synced 2024-12-29 12:16:20 +00:00
Code Issues Projects Releases Packages Wiki Activity

[POWERPC] cell: add cbe_node_to_cpu function

Browse source 
This patch adds code to deal with conversion of
logical cpu to cbe nodes. It removes code that
assummed there were two logical CPUs per CBE.

Signed-off-by: Christian Krafft <krafft@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
This commit is contained in:
Christian Krafft 2007-04-23 21:35:39 +02:00 committed by Arnd Bergmann
parent 390cbb56a7
commit 91a69c9646
4 changed files with 45 additions and 19 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
arch/powerpc/oprofile/op_model_cell.c
View file

@ -37,6 +37,7 @@
#include <asm/system.h>
#include "../platforms/cell/interrupt.h"
#include "../platforms/cell/cbe_regs.h"
#define PPU_CYCLES_EVENT_NUM 1 /* event number for CYCLES */
#define PPU_CYCLES_GRP_NUM 1 /* special group number for identifying

53
arch/powerpc/platforms/cell/cbe_regs.c
View file

@ -38,8 +38,13 @@ static struct cbe_thread_map
{
struct device_node *cpu_node;
struct cbe_regs_map *regs;
unsigned int thread_id;
unsigned int cbe_id;
} cbe_thread_map[NR_CPUS];
static cpumask_t cbe_local_mask[MAX_CBE] = { [0 ... MAX_CBE-1] = CPU_MASK_NONE };
static cpumask_t cbe_first_online_cpu = CPU_MASK_NONE;
static struct cbe_regs_map *cbe_find_map(struct device_node *np)
{
int i;
@ -130,31 +135,40 @@ struct cbe_mic_tm_regs __iomem *cbe_get_cpu_mic_tm_regs(int cpu)
}
EXPORT_SYMBOL_GPL(cbe_get_cpu_mic_tm_regs);
/* FIXME
* This is little more than a stub at the moment. It should be
* fleshed out so that it works for both SMT and non-SMT, no
* matter if the passed cpu is odd or even.
* For SMT enabled, returns 0 for even-numbered cpu; otherwise 1.
* For SMT disabled, returns 0 for all cpus.
*/
u32 cbe_get_hw_thread_id(int cpu)
{
return (cpu & 1);
return cbe_thread_map[cpu].thread_id;
}
EXPORT_SYMBOL_GPL(cbe_get_hw_thread_id);
u32 cbe_cpu_to_node(int cpu)
{
return cbe_thread_map[cpu].cbe_id;
}
EXPORT_SYMBOL_GPL(cbe_cpu_to_node);
u32 cbe_node_to_cpu(int node)
{
return find_first_bit( (unsigned long *) &cbe_local_mask[node], sizeof(cpumask_t));
}
EXPORT_SYMBOL_GPL(cbe_node_to_cpu);
void __init cbe_regs_init(void)
{
int i;
unsigned int thread_id;
struct device_node *cpu;
/* Build local fast map of CPUs */
for_each_possible_cpu(i)
cbe_thread_map[i].cpu_node = of_get_cpu_node(i, NULL);
for_each_possible_cpu(i) {
cbe_thread_map[i].cpu_node = of_get_cpu_node(i, &thread_id);
cbe_thread_map[i].thread_id = thread_id;
}
/* Find maps for each device tree CPU */
for_each_node_by_type(cpu, "cpu") {
struct cbe_regs_map *map = &cbe_regs_maps[cbe_regs_map_count++];
struct cbe_regs_map *map;
unsigned int cbe_id;
/* That hack must die die die ! */
const struct address_prop {
@ -162,6 +176,8 @@ void __init cbe_regs_init(void)
unsigned int len;
} __attribute__((packed)) *prop;
cbe_id = cbe_regs_map_count++;
map = &cbe_regs_maps[cbe_id];
if (cbe_regs_map_count > MAX_CBE) {
printk(KERN_ERR "cbe_regs: More BE chips than supported"
@ -170,9 +186,18 @@ void __init cbe_regs_init(void)
return;
}
map->cpu_node = cpu;
for_each_possible_cpu(i)
if (cbe_thread_map[i].cpu_node == cpu)
cbe_thread_map[i].regs = map;
for_each_possible_cpu(i) {
struct cbe_thread_map *thread = &cbe_thread_map[i];
if (thread->cpu_node == cpu) {
thread->regs = map;
thread->cbe_id = cbe_id;
cpu_set(i, cbe_local_mask[cbe_id]);
if(thread->thread_id == 0)
cpu_set(i, cbe_first_online_cpu);
}
}
prop = of_get_property(cpu, "pervasive", NULL);
if (prop != NULL)

5
arch/powerpc/platforms/cell/cbe_regs.h
View file

@ -255,6 +255,11 @@ struct cbe_mic_tm_regs {
extern struct cbe_mic_tm_regs __iomem *cbe_get_mic_tm_regs(struct device_node *np);
extern struct cbe_mic_tm_regs __iomem *cbe_get_cpu_mic_tm_regs(int cpu);
/* some utility functions to deal with SMT */
extern u32 cbe_get_hw_thread_id(int cpu);
extern u32 cbe_cpu_to_node(int cpu);
extern u32 cbe_node_to_cpu(int node);
/* Init this module early */
extern void cbe_regs_init(void);

5
include/asm-powerpc/cell-pmu.h
View file

@ -97,11 +97,6 @@ extern void cbe_disable_pm_interrupts(u32 cpu);
extern u32 cbe_get_and_clear_pm_interrupts(u32 cpu);
extern void cbe_sync_irq(int node);
/* Utility functions, macros */
extern u32 cbe_get_hw_thread_id(int cpu);
#define cbe_cpu_to_node(cpu) ((cpu) >> 1)
#define CBE_COUNT_SUPERVISOR_MODE 0
#define CBE_COUNT_HYPERVISOR_MODE 1
#define CBE_COUNT_PROBLEM_MODE 2