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Second Round of Renesas ARM Based SoC Soc Updates for v3.19

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* Enable PCI domains for R-Car Gen2 devices
 * Make APMU resource code SoC-specific
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Merge tag 'renesas-soc2-for-v3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/soc

Pull "Second Round of Renesas ARM Based SoC Soc Updates for v3.19" from Simon Horman:

* Enable PCI domains for R-Car Gen2 devices
* Make APMU resource code SoC-specific

* tag 'renesas-soc2-for-v3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  ARM: shmobile: Enable PCI domains for R-Car Gen2 devices
  ARM: shmobile: r8a7791: Correct number of CPU cores
  ARM: shmobile: Separate APMU resource data into CPU dependant part

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2014-11-19 22:09:18 +01:00
commit 0a1d643450
6 changed files with 68 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm/mach-shmobile/Kconfig
View File

@ -19,6 +19,7 @@ config ARCH_RCAR_GEN2
select PM_RCAR if PM || SMP
select RENESAS_IRQC
select SYS_SUPPORTS_SH_CMT
select PCI_DOMAINS if PCI
config ARCH_RMOBILE
bool

5
arch/arm/mach-shmobile/common.h
View File

@ -19,11 +19,6 @@ extern void shmobile_boot_scu(void);
extern void shmobile_smp_scu_prepare_cpus(unsigned int max_cpus);
extern void shmobile_smp_scu_cpu_die(unsigned int cpu);
extern int shmobile_smp_scu_cpu_kill(unsigned int cpu);
extern void shmobile_smp_apmu_prepare_cpus(unsigned int max_cpus);
extern int shmobile_smp_apmu_boot_secondary(unsigned int cpu,
struct task_struct *idle);
extern void shmobile_smp_apmu_cpu_die(unsigned int cpu);
extern int shmobile_smp_apmu_cpu_kill(unsigned int cpu);
struct clk;
extern int shmobile_clk_init(void);
extern void shmobile_handle_irq_intc(struct pt_regs *);

27
arch/arm/mach-shmobile/platsmp-apmu.c
View File

@ -1,6 +1,7 @@
/*
* SMP support for SoCs with APMU
*
* Copyright (C) 2014 Renesas Electronics Corporation
* Copyright (C) 2013 Magnus Damm
*
* This program is free software; you can redistribute it and/or modify
@ -22,6 +23,7 @@
#include <asm/smp_plat.h>
#include <asm/suspend.h>
#include "common.h"
#include "platsmp-apmu.h"
static struct {
void __iomem *iomem;
@ -83,28 +85,15 @@ static void apmu_init_cpu(struct resource *res, int cpu, int bit)
pr_debug("apmu ioremap %d %d %pr\n", cpu, bit, res);
}
static struct {
struct resource iomem;
int cpus[4];
} apmu_config[] = {
{
.iomem = DEFINE_RES_MEM(0xe6152000, 0x88),
.cpus = { 0, 1, 2, 3 },
},
{
.iomem = DEFINE_RES_MEM(0xe6151000, 0x88),
.cpus = { 0x100, 0x101, 0x102, 0x103 },
}
};
static void apmu_parse_cfg(void (*fn)(struct resource *res, int cpu, int bit))
static void apmu_parse_cfg(void (*fn)(struct resource *res, int cpu, int bit),
struct rcar_apmu_config *apmu_config, int num)
{
u32 id;
int k;
int bit, index;
bool is_allowed;
for (k = 0; k < ARRAY_SIZE(apmu_config); k++) {
for (k = 0; k < num; k++) {
/* only enable the cluster that includes the boot CPU */
is_allowed = false;
for (bit = 0; bit < ARRAY_SIZE(apmu_config[k].cpus); bit++) {
@ -128,14 +117,16 @@ static void apmu_parse_cfg(void (*fn)(struct resource *res, int cpu, int bit))
}
}
void __init shmobile_smp_apmu_prepare_cpus(unsigned int max_cpus)
void __init shmobile_smp_apmu_prepare_cpus(unsigned int max_cpus,
struct rcar_apmu_config *apmu_config,
int num)
{
/* install boot code shared by all CPUs */
shmobile_boot_fn = virt_to_phys(shmobile_smp_boot);
shmobile_boot_arg = MPIDR_HWID_BITMASK;
/* perform per-cpu setup */
apmu_parse_cfg(apmu_init_cpu);
apmu_parse_cfg(apmu_init_cpu, apmu_config, num);
}
#ifdef CONFIG_SMP

32
arch/arm/mach-shmobile/platsmp-apmu.h Normal file
View File

@ -0,0 +1,32 @@
/*
* rmobile apmu definition
*
* Copyright (C) 2014 Renesas Electronics Corporation
*
* 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.
*/
#ifndef PLATSMP_APMU_H
#define PLATSMP_APMU_H
struct rcar_apmu_config {
struct resource iomem;
int cpus[4];
};
extern void shmobile_smp_apmu_prepare_cpus(unsigned int max_cpus,
struct rcar_apmu_config *apmu_config,
int num);
extern int shmobile_smp_apmu_boot_secondary(unsigned int cpu,
struct task_struct *idle);
extern void shmobile_smp_apmu_cpu_die(unsigned int cpu);
extern int shmobile_smp_apmu_cpu_kill(unsigned int cpu);
#endif /* PLATSMP_APMU_H */

16
arch/arm/mach-shmobile/smp-r8a7790.c
View File

@ -21,6 +21,7 @@
#include <asm/smp_plat.h>
#include "common.h"
#include "platsmp-apmu.h"
#include "pm-rcar.h"
#include "r8a7790.h"
@ -34,10 +35,23 @@ static struct rcar_sysc_ch r8a7790_ca7_scu = {
.isr_bit = 21, /* CA7-SCU */
};
static struct rcar_apmu_config r8a7790_apmu_config[] = {
{
.iomem = DEFINE_RES_MEM(0xe6152000, 0x88),
.cpus = { 0, 1, 2, 3 },
},
{
.iomem = DEFINE_RES_MEM(0xe6151000, 0x88),
.cpus = { 0x100, 0x0101, 0x102, 0x103 },
}
};
static void __init r8a7790_smp_prepare_cpus(unsigned int max_cpus)
{
/* let APMU code install data related to shmobile_boot_vector */
shmobile_smp_apmu_prepare_cpus(max_cpus);
shmobile_smp_apmu_prepare_cpus(max_cpus,
r8a7790_apmu_config,
ARRAY_SIZE(r8a7790_apmu_config));
/* turn on power to SCU */
r8a7790_pm_init();

12
arch/arm/mach-shmobile/smp-r8a7791.c
View File

@ -21,13 +21,23 @@
#include <asm/smp_plat.h>
#include "common.h"
#include "platsmp-apmu.h"
#include "r8a7791.h"
#include "rcar-gen2.h"
static struct rcar_apmu_config r8a7791_apmu_config[] = {
{
.iomem = DEFINE_RES_MEM(0xe6152000, 0x88),
.cpus = { 0, 1 },
}
};
static void __init r8a7791_smp_prepare_cpus(unsigned int max_cpus)
{
/* let APMU code install data related to shmobile_boot_vector */
shmobile_smp_apmu_prepare_cpus(max_cpus);
shmobile_smp_apmu_prepare_cpus(max_cpus,
r8a7791_apmu_config,
ARRAY_SIZE(r8a7791_apmu_config));
r8a7791_pm_init();
}