--- zzzz-none-000/linux-3.10.107/arch/arm/mach-shmobile/smp-r8a7779.c 2017-06-27 09:49:32.000000000 +0000 +++ scorpion-7490-727/linux-3.10.107/arch/arm/mach-shmobile/smp-r8a7779.c 2021-02-04 17:41:59.000000000 +0000 @@ -12,10 +12,6 @@ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include @@ -23,51 +19,45 @@ #include #include #include -#include -#include + #include #include #include -#include + +#include "common.h" +#include "pm-rcar.h" +#include "r8a7779.h" #define AVECR IOMEM(0xfe700040) #define R8A7779_SCU_BASE 0xf0000000 -static struct r8a7779_pm_ch r8a7779_ch_cpu1 = { +static const struct rcar_sysc_ch r8a7779_ch_cpu1 = { .chan_offs = 0x40, /* PWRSR0 .. PWRER0 */ .chan_bit = 1, /* ARM1 */ .isr_bit = 1, /* ARM1 */ }; -static struct r8a7779_pm_ch r8a7779_ch_cpu2 = { +static const struct rcar_sysc_ch r8a7779_ch_cpu2 = { .chan_offs = 0x40, /* PWRSR0 .. PWRER0 */ .chan_bit = 2, /* ARM2 */ .isr_bit = 2, /* ARM2 */ }; -static struct r8a7779_pm_ch r8a7779_ch_cpu3 = { +static const struct rcar_sysc_ch r8a7779_ch_cpu3 = { .chan_offs = 0x40, /* PWRSR0 .. PWRER0 */ .chan_bit = 3, /* ARM3 */ .isr_bit = 3, /* ARM3 */ }; -static struct r8a7779_pm_ch *r8a7779_ch_cpu[4] = { +static const struct rcar_sysc_ch * const r8a7779_ch_cpu[4] = { [1] = &r8a7779_ch_cpu1, [2] = &r8a7779_ch_cpu2, [3] = &r8a7779_ch_cpu3, }; -#ifdef CONFIG_HAVE_ARM_TWD -static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, R8A7779_SCU_BASE + 0x600, 29); -void __init r8a7779_register_twd(void) -{ - twd_local_timer_register(&twd_local_timer); -} -#endif - static int r8a7779_platform_cpu_kill(unsigned int cpu) { - struct r8a7779_pm_ch *ch = NULL; + const struct rcar_sysc_ch *ch = NULL; int ret = -EIO; cpu = cpu_logical_map(cpu); @@ -76,36 +66,38 @@ ch = r8a7779_ch_cpu[cpu]; if (ch) - ret = r8a7779_sysc_power_down(ch); + ret = rcar_sysc_power_down(ch); return ret ? ret : 1; } -static int __cpuinit r8a7779_boot_secondary(unsigned int cpu, struct task_struct *idle) +static int r8a7779_boot_secondary(unsigned int cpu, struct task_struct *idle) { - struct r8a7779_pm_ch *ch = NULL; - int ret = -EIO; + const struct rcar_sysc_ch *ch = NULL; + unsigned int lcpu = cpu_logical_map(cpu); + int ret; - cpu = cpu_logical_map(cpu); - - if (cpu < ARRAY_SIZE(r8a7779_ch_cpu)) - ch = r8a7779_ch_cpu[cpu]; + if (lcpu < ARRAY_SIZE(r8a7779_ch_cpu)) + ch = r8a7779_ch_cpu[lcpu]; if (ch) - ret = r8a7779_sysc_power_up(ch); + ret = rcar_sysc_power_up(ch); + else + ret = -EIO; return ret; } static void __init r8a7779_smp_prepare_cpus(unsigned int max_cpus) { - scu_enable(shmobile_scu_base); + /* Map the reset vector (in headsmp-scu.S, headsmp.S) */ + __raw_writel(__pa(shmobile_boot_vector), AVECR); + shmobile_boot_fn = virt_to_phys(shmobile_boot_scu); + shmobile_boot_arg = (unsigned long)shmobile_scu_base; - /* Map the reset vector (in headsmp-scu.S) */ - __raw_writel(__pa(shmobile_secondary_vector_scu), AVECR); - - /* enable cache coherency on booting CPU */ - scu_power_mode(shmobile_scu_base, SCU_PM_NORMAL); + /* setup r8a7779 specific SCU bits */ + shmobile_scu_base = IOMEM(R8A7779_SCU_BASE); + shmobile_smp_scu_prepare_cpus(max_cpus); r8a7779_pm_init(); @@ -115,70 +107,21 @@ r8a7779_platform_cpu_kill(3); } -static void __init r8a7779_smp_init_cpus(void) -{ - /* setup r8a7779 specific SCU base */ - shmobile_scu_base = IOMEM(R8A7779_SCU_BASE); - - shmobile_smp_init_cpus(scu_get_core_count(shmobile_scu_base)); -} - #ifdef CONFIG_HOTPLUG_CPU -static int r8a7779_scu_psr_core_disabled(int cpu) -{ - unsigned long mask = 3 << (cpu * 8); - - if ((__raw_readl(shmobile_scu_base + 8) & mask) == mask) - return 1; - - return 0; -} - static int r8a7779_cpu_kill(unsigned int cpu) { - int k; - - /* this function is running on another CPU than the offline target, - * here we need wait for shutdown code in platform_cpu_die() to - * finish before asking SoC-specific code to power off the CPU core. - */ - for (k = 0; k < 1000; k++) { - if (r8a7779_scu_psr_core_disabled(cpu)) - return r8a7779_platform_cpu_kill(cpu); - - mdelay(1); - } + if (shmobile_smp_scu_cpu_kill(cpu)) + return r8a7779_platform_cpu_kill(cpu); return 0; } - -static void r8a7779_cpu_die(unsigned int cpu) -{ - dsb(); - flush_cache_all(); - - /* disable cache coherency */ - scu_power_mode(shmobile_scu_base, SCU_PM_POWEROFF); - - /* Endless loop until power off from r8a7779_cpu_kill() */ - while (1) - cpu_do_idle(); -} - -static int r8a7779_cpu_disable(unsigned int cpu) -{ - /* only CPU1->3 have power domains, do not allow hotplug of CPU0 */ - return cpu == 0 ? -EPERM : 0; -} #endif /* CONFIG_HOTPLUG_CPU */ struct smp_operations r8a7779_smp_ops __initdata = { - .smp_init_cpus = r8a7779_smp_init_cpus, .smp_prepare_cpus = r8a7779_smp_prepare_cpus, .smp_boot_secondary = r8a7779_boot_secondary, #ifdef CONFIG_HOTPLUG_CPU + .cpu_die = shmobile_smp_scu_cpu_die, .cpu_kill = r8a7779_cpu_kill, - .cpu_die = r8a7779_cpu_die, - .cpu_disable = r8a7779_cpu_disable, #endif };