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[79.139.233.208]) by smtp.gmail.com with ESMTPSA id h84sm753915ljf.42.2019.07.10.20.13.34 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 10 Jul 2019 20:13:35 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , Peter De Schrijver , "Rafael J. Wysocki" , Daniel Lezcano Subject: [PATCH v2 1/6] ARM: tegra: Remove cpuidle drivers Date: Thu, 11 Jul 2019 06:13:07 +0300 Message-Id: <20190711031312.10038-2-digetx@gmail.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190711031312.10038-1-digetx@gmail.com> References: <20190711031312.10038-1-digetx@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190710_201337_777257_9785257B X-CRM114-Status: GOOD ( 19.96 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Remove the old drivers to replace them cleanly with a new one later on. Signed-off-by: Dmitry Osipenko --- arch/arm/mach-tegra/Makefile | 13 -- arch/arm/mach-tegra/cpuidle-tegra114.c | 89 ----------- arch/arm/mach-tegra/cpuidle-tegra20.c | 212 ------------------------- arch/arm/mach-tegra/cpuidle-tegra30.c | 132 --------------- arch/arm/mach-tegra/cpuidle.c | 50 ------ arch/arm/mach-tegra/cpuidle.h | 21 --- arch/arm/mach-tegra/irq.c | 18 --- arch/arm/mach-tegra/irq.h | 11 -- arch/arm/mach-tegra/pm.c | 7 - arch/arm/mach-tegra/pm.h | 1 - arch/arm/mach-tegra/reset-handler.S | 11 -- arch/arm/mach-tegra/reset.h | 9 +- arch/arm/mach-tegra/sleep-tegra20.S | 190 +--------------------- arch/arm/mach-tegra/sleep.h | 12 -- arch/arm/mach-tegra/tegra.c | 3 - drivers/soc/tegra/Kconfig | 1 - include/soc/tegra/cpuidle.h | 4 - 17 files changed, 5 insertions(+), 779 deletions(-) delete mode 100644 arch/arm/mach-tegra/cpuidle-tegra114.c delete mode 100644 arch/arm/mach-tegra/cpuidle-tegra20.c delete mode 100644 arch/arm/mach-tegra/cpuidle-tegra30.c delete mode 100644 arch/arm/mach-tegra/cpuidle.c delete mode 100644 arch/arm/mach-tegra/cpuidle.h delete mode 100644 arch/arm/mach-tegra/irq.h diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile index 6c1dff2eccc2..5d93a0b36866 100644 --- a/arch/arm/mach-tegra/Makefile +++ b/arch/arm/mach-tegra/Makefile @@ -8,29 +8,16 @@ obj-y += reset.o obj-y += reset-handler.o obj-y += sleep.o obj-y += tegra.o -obj-$(CONFIG_CPU_IDLE) += cpuidle.o obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += sleep-tegra20.o obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += pm-tegra20.o -ifeq ($(CONFIG_CPU_IDLE),y) -obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += cpuidle-tegra20.o -endif obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += sleep-tegra30.o obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += pm-tegra30.o -ifeq ($(CONFIG_CPU_IDLE),y) -obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += cpuidle-tegra30.o -endif obj-$(CONFIG_SMP) += platsmp.o obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o obj-$(CONFIG_ARCH_TEGRA_114_SOC) += sleep-tegra30.o obj-$(CONFIG_ARCH_TEGRA_114_SOC) += pm-tegra30.o -ifeq ($(CONFIG_CPU_IDLE),y) -obj-$(CONFIG_ARCH_TEGRA_114_SOC) += cpuidle-tegra114.o -endif obj-$(CONFIG_ARCH_TEGRA_124_SOC) += sleep-tegra30.o obj-$(CONFIG_ARCH_TEGRA_124_SOC) += pm-tegra30.o -ifeq ($(CONFIG_CPU_IDLE),y) -obj-$(CONFIG_ARCH_TEGRA_124_SOC) += cpuidle-tegra114.o -endif obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += board-paz00.o diff --git a/arch/arm/mach-tegra/cpuidle-tegra114.c b/arch/arm/mach-tegra/cpuidle-tegra114.c deleted file mode 100644 index 5118f777fd66..000000000000 --- a/arch/arm/mach-tegra/cpuidle-tegra114.c +++ /dev/null @@ -1,89 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (c) 2013, NVIDIA Corporation. All rights reserved. - */ - -#include -#include -#include -#include -#include -#include - -#include - -#include -#include -#include -#include - -#include "cpuidle.h" -#include "pm.h" -#include "sleep.h" - -#ifdef CONFIG_PM_SLEEP -#define TEGRA114_MAX_STATES 2 -#else -#define TEGRA114_MAX_STATES 1 -#endif - -#ifdef CONFIG_PM_SLEEP -static int tegra114_idle_power_down(struct cpuidle_device *dev, - struct cpuidle_driver *drv, - int index) -{ - local_fiq_disable(); - - tegra_set_cpu_in_lp2(); - cpu_pm_enter(); - - call_firmware_op(prepare_idle, TF_PM_MODE_LP2_NOFLUSH_L2); - - /* Do suspend by ourselves if the firmware does not implement it */ - if (call_firmware_op(do_idle, 0) == -ENOSYS) - cpu_suspend(0, tegra30_sleep_cpu_secondary_finish); - - cpu_pm_exit(); - tegra_clear_cpu_in_lp2(); - - local_fiq_enable(); - - return index; -} - -static void tegra114_idle_enter_s2idle(struct cpuidle_device *dev, - struct cpuidle_driver *drv, - int index) -{ - tegra114_idle_power_down(dev, drv, index); -} -#endif - -static struct cpuidle_driver tegra_idle_driver = { - .name = "tegra_idle", - .owner = THIS_MODULE, - .state_count = TEGRA114_MAX_STATES, - .states = { - [0] = ARM_CPUIDLE_WFI_STATE_PWR(600), -#ifdef CONFIG_PM_SLEEP - [1] = { - .enter = tegra114_idle_power_down, - .enter_s2idle = tegra114_idle_enter_s2idle, - .exit_latency = 500, - .target_residency = 1000, - .flags = CPUIDLE_FLAG_TIMER_STOP, - .power_usage = 0, - .name = "powered-down", - .desc = "CPU power gated", - }, -#endif - }, -}; - -int __init tegra114_cpuidle_init(void) -{ - if (!psci_smp_available()) - return cpuidle_register(&tegra_idle_driver, NULL); - - return 0; -} diff --git a/arch/arm/mach-tegra/cpuidle-tegra20.c b/arch/arm/mach-tegra/cpuidle-tegra20.c deleted file mode 100644 index 2447427cb4a8..000000000000 --- a/arch/arm/mach-tegra/cpuidle-tegra20.c +++ /dev/null @@ -1,212 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * CPU idle driver for Tegra CPUs - * - * Copyright (c) 2010-2012, NVIDIA Corporation. - * Copyright (c) 2011 Google, Inc. - * Author: Colin Cross - * Gary King - * - * Rework for 3.3 by Peter De Schrijver - */ - -#include -#include -#include -#include -#include -#include - -#include - -#include -#include -#include - -#include "cpuidle.h" -#include "iomap.h" -#include "irq.h" -#include "pm.h" -#include "reset.h" -#include "sleep.h" - -#ifdef CONFIG_PM_SLEEP -static bool abort_flag; -static atomic_t abort_barrier; -static int tegra20_idle_lp2_coupled(struct cpuidle_device *dev, - struct cpuidle_driver *drv, - int index); -#define TEGRA20_MAX_STATES 2 -#else -#define TEGRA20_MAX_STATES 1 -#endif - -static struct cpuidle_driver tegra_idle_driver = { - .name = "tegra_idle", - .owner = THIS_MODULE, - .states = { - ARM_CPUIDLE_WFI_STATE_PWR(600), -#ifdef CONFIG_PM_SLEEP - { - .enter = tegra20_idle_lp2_coupled, - .exit_latency = 5000, - .target_residency = 10000, - .power_usage = 0, - .flags = CPUIDLE_FLAG_COUPLED | - CPUIDLE_FLAG_TIMER_STOP, - .name = "powered-down", - .desc = "CPU power gated", - }, -#endif - }, - .state_count = TEGRA20_MAX_STATES, - .safe_state_index = 0, -}; - -#ifdef CONFIG_PM_SLEEP -#ifdef CONFIG_SMP -static int tegra20_reset_sleeping_cpu_1(void) -{ - int ret = 0; - - tegra_pen_lock(); - - if (readb(tegra20_cpu1_resettable_status) == CPU_RESETTABLE) - tegra20_cpu_shutdown(1); - else - ret = -EINVAL; - - tegra_pen_unlock(); - - return ret; -} - -static void tegra20_wake_cpu1_from_reset(void) -{ - tegra_pen_lock(); - - tegra20_cpu_clear_resettable(); - - /* enable cpu clock on cpu */ - tegra_enable_cpu_clock(1); - - /* take the CPU out of reset */ - tegra_cpu_out_of_reset(1); - - /* unhalt the cpu */ - flowctrl_write_cpu_halt(1, 0); - - tegra_pen_unlock(); -} - -static int tegra20_reset_cpu_1(void) -{ - if (!cpu_online(1) || !tegra20_reset_sleeping_cpu_1()) - return 0; - - tegra20_wake_cpu1_from_reset(); - return -EBUSY; -} -#else -static inline void tegra20_wake_cpu1_from_reset(void) -{ -} - -static inline int tegra20_reset_cpu_1(void) -{ - return 0; -} -#endif - -static bool tegra20_cpu_cluster_power_down(struct cpuidle_device *dev, - struct cpuidle_driver *drv, - int index) -{ - while (tegra20_cpu_is_resettable_soon()) - cpu_relax(); - - if (tegra20_reset_cpu_1() || !tegra_cpu_rail_off_ready()) - return false; - - tegra_idle_lp2_last(); - - if (cpu_online(1)) - tegra20_wake_cpu1_from_reset(); - - return true; -} - -#ifdef CONFIG_SMP -static bool tegra20_idle_enter_lp2_cpu_1(struct cpuidle_device *dev, - struct cpuidle_driver *drv, - int index) -{ - cpu_suspend(0, tegra20_sleep_cpu_secondary_finish); - - tegra20_cpu_clear_resettable(); - - return true; -} -#else -static inline bool tegra20_idle_enter_lp2_cpu_1(struct cpuidle_device *dev, - struct cpuidle_driver *drv, - int index) -{ - return true; -} -#endif - -static int tegra20_idle_lp2_coupled(struct cpuidle_device *dev, - struct cpuidle_driver *drv, - int index) -{ - bool entered_lp2 = false; - - if (tegra_pending_sgi()) - WRITE_ONCE(abort_flag, true); - - cpuidle_coupled_parallel_barrier(dev, &abort_barrier); - - if (abort_flag) { - cpuidle_coupled_parallel_barrier(dev, &abort_barrier); - abort_flag = false; /* clean flag for next coming */ - return -EINTR; - } - - local_fiq_disable(); - - tegra_set_cpu_in_lp2(); - cpu_pm_enter(); - - if (dev->cpu == 0) - entered_lp2 = tegra20_cpu_cluster_power_down(dev, drv, index); - else - entered_lp2 = tegra20_idle_enter_lp2_cpu_1(dev, drv, index); - - cpu_pm_exit(); - tegra_clear_cpu_in_lp2(); - - local_fiq_enable(); - - smp_rmb(); - - return entered_lp2 ? index : 0; -} -#endif - -/* - * Tegra20 HW appears to have a bug such that PCIe device interrupts, whether - * they are legacy IRQs or MSI, are lost when LP2 is enabled. To work around - * this, simply disable LP2 if the PCI driver and DT node are both enabled. - */ -void tegra20_cpuidle_pcie_irqs_in_use(void) -{ - pr_info_once( - "Disabling cpuidle LP2 state, since PCIe IRQs are in use\n"); - tegra_idle_driver.states[1].disabled = true; -} - -int __init tegra20_cpuidle_init(void) -{ - return cpuidle_register(&tegra_idle_driver, cpu_possible_mask); -} diff --git a/arch/arm/mach-tegra/cpuidle-tegra30.c b/arch/arm/mach-tegra/cpuidle-tegra30.c deleted file mode 100644 index c6128526877d..000000000000 --- a/arch/arm/mach-tegra/cpuidle-tegra30.c +++ /dev/null @@ -1,132 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * CPU idle driver for Tegra CPUs - * - * Copyright (c) 2010-2012, NVIDIA Corporation. - * Copyright (c) 2011 Google, Inc. - * Author: Colin Cross - * Gary King - * - * Rework for 3.3 by Peter De Schrijver - */ - -#include -#include -#include -#include -#include -#include - -#include -#include -#include - -#include "cpuidle.h" -#include "pm.h" -#include "sleep.h" - -#ifdef CONFIG_PM_SLEEP -static int tegra30_idle_lp2(struct cpuidle_device *dev, - struct cpuidle_driver *drv, - int index); -#endif - -static struct cpuidle_driver tegra_idle_driver = { - .name = "tegra_idle", - .owner = THIS_MODULE, -#ifdef CONFIG_PM_SLEEP - .state_count = 2, -#else - .state_count = 1, -#endif - .states = { - [0] = ARM_CPUIDLE_WFI_STATE_PWR(600), -#ifdef CONFIG_PM_SLEEP - [1] = { - .enter = tegra30_idle_lp2, - .exit_latency = 2000, - .target_residency = 2200, - .power_usage = 0, - .flags = CPUIDLE_FLAG_TIMER_STOP, - .name = "powered-down", - .desc = "CPU power gated", - }, -#endif - }, -}; - -#ifdef CONFIG_PM_SLEEP -static bool tegra30_cpu_cluster_power_down(struct cpuidle_device *dev, - struct cpuidle_driver *drv, - int index) -{ - /* All CPUs entering LP2 is not working. - * Don't let CPU0 enter LP2 when any secondary CPU is online. - */ - if (num_online_cpus() > 1 || !tegra_cpu_rail_off_ready()) { - cpu_do_idle(); - return false; - } - - tegra_idle_lp2_last(); - - return true; -} - -#ifdef CONFIG_SMP -static bool tegra30_cpu_core_power_down(struct cpuidle_device *dev, - struct cpuidle_driver *drv, - int index) -{ - smp_wmb(); - - cpu_suspend(0, tegra30_sleep_cpu_secondary_finish); - - return true; -} -#else -static inline bool tegra30_cpu_core_power_down(struct cpuidle_device *dev, - struct cpuidle_driver *drv, - int index) -{ - return true; -} -#endif - -static int tegra30_idle_lp2(struct cpuidle_device *dev, - struct cpuidle_driver *drv, - int index) -{ - bool entered_lp2 = false; - bool last_cpu; - - local_fiq_disable(); - - last_cpu = tegra_set_cpu_in_lp2(); - cpu_pm_enter(); - - if (dev->cpu == 0) { - if (last_cpu) - entered_lp2 = tegra30_cpu_cluster_power_down(dev, drv, - index); - else - cpu_do_idle(); - } else { - entered_lp2 = tegra30_cpu_core_power_down(dev, drv, index); - } - - cpu_pm_exit(); - tegra_clear_cpu_in_lp2(); - - local_fiq_enable(); - - smp_rmb(); - - return (entered_lp2) ? index : 0; -} -#endif - -int __init tegra30_cpuidle_init(void) -{ - return cpuidle_register(&tegra_idle_driver, NULL); -} diff --git a/arch/arm/mach-tegra/cpuidle.c b/arch/arm/mach-tegra/cpuidle.c deleted file mode 100644 index d565c44cfc93..000000000000 --- a/arch/arm/mach-tegra/cpuidle.c +++ /dev/null @@ -1,50 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * arch/arm/mach-tegra/cpuidle.c - * - * CPU idle driver for Tegra CPUs - * - * Copyright (c) 2010-2012, NVIDIA Corporation. - * Copyright (c) 2011 Google, Inc. - * Author: Colin Cross - * Gary King - * - * Rework for 3.3 by Peter De Schrijver - */ - -#include -#include - -#include - -#include "cpuidle.h" - -void __init tegra_cpuidle_init(void) -{ - switch (tegra_get_chip_id()) { - case TEGRA20: - if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC)) - tegra20_cpuidle_init(); - break; - case TEGRA30: - if (IS_ENABLED(CONFIG_ARCH_TEGRA_3x_SOC)) - tegra30_cpuidle_init(); - break; - case TEGRA114: - case TEGRA124: - if (IS_ENABLED(CONFIG_ARCH_TEGRA_114_SOC) || - IS_ENABLED(CONFIG_ARCH_TEGRA_124_SOC)) - tegra114_cpuidle_init(); - break; - } -} - -void tegra_cpuidle_pcie_irqs_in_use(void) -{ - switch (tegra_get_chip_id()) { - case TEGRA20: - if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC)) - tegra20_cpuidle_pcie_irqs_in_use(); - break; - } -} diff --git a/arch/arm/mach-tegra/cpuidle.h b/arch/arm/mach-tegra/cpuidle.h deleted file mode 100644 index 4e1f459f5bd8..000000000000 --- a/arch/arm/mach-tegra/cpuidle.h +++ /dev/null @@ -1,21 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * Copyright (c) 2012, NVIDIA Corporation. All rights reserved. - */ - -#ifndef __MACH_TEGRA_CPUIDLE_H -#define __MACH_TEGRA_CPUIDLE_H - -#ifdef CONFIG_CPU_IDLE -int tegra20_cpuidle_init(void); -void tegra20_cpuidle_pcie_irqs_in_use(void); -int tegra30_cpuidle_init(void); -int tegra114_cpuidle_init(void); -void tegra_cpuidle_init(void); -void tegra_cpuidle_pcie_irqs_in_use(void); -#else -static inline void tegra_cpuidle_init(void) {} -static inline void tegra_cpuidle_pcie_irqs_in_use(void) {} -#endif - -#endif diff --git a/arch/arm/mach-tegra/irq.c b/arch/arm/mach-tegra/irq.c index ace7a390b5fe..22fca820f5c0 100644 --- a/arch/arm/mach-tegra/irq.c +++ b/arch/arm/mach-tegra/irq.c @@ -20,28 +20,10 @@ #include "board.h" #include "iomap.h" -#include "irq.h" - -#define SGI_MASK 0xFFFF #ifdef CONFIG_PM_SLEEP static void __iomem *tegra_gic_cpu_base; -#endif - -bool tegra_pending_sgi(void) -{ - u32 pending_set; - void __iomem *distbase = IO_ADDRESS(TEGRA_ARM_INT_DIST_BASE); - - pending_set = readl_relaxed(distbase + GIC_DIST_PENDING_SET); - if (pending_set & SGI_MASK) - return true; - - return false; -} - -#ifdef CONFIG_PM_SLEEP static int tegra_gic_notifier(struct notifier_block *self, unsigned long cmd, void *v) { diff --git a/arch/arm/mach-tegra/irq.h b/arch/arm/mach-tegra/irq.h deleted file mode 100644 index 7a94cf121448..000000000000 --- a/arch/arm/mach-tegra/irq.h +++ /dev/null @@ -1,11 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * Copyright (c) 2012, NVIDIA Corporation. All rights reserved. - */ - -#ifndef __TEGRA_IRQ_H -#define __TEGRA_IRQ_H - -bool tegra_pending_sgi(void); - -#endif diff --git a/arch/arm/mach-tegra/pm.c b/arch/arm/mach-tegra/pm.c index 3cab81b82866..6aaacb5757e1 100644 --- a/arch/arm/mach-tegra/pm.c +++ b/arch/arm/mach-tegra/pm.c @@ -137,18 +137,11 @@ bool tegra_set_cpu_in_lp2(void) if ((phy_cpu_id == 0) && cpumask_equal(cpu_lp2_mask, cpu_online_mask)) last_cpu = true; - else if (tegra_get_chip_id() == TEGRA20 && phy_cpu_id == 1) - tegra20_cpu_set_resettable_soon(); spin_unlock(&tegra_lp2_lock); return last_cpu; } -int tegra_cpu_do_idle(void) -{ - return cpu_do_idle(); -} - static int tegra_sleep_cpu(unsigned long v2p) { /* diff --git a/arch/arm/mach-tegra/pm.h b/arch/arm/mach-tegra/pm.h index 569151b3edc0..1e51a9b636eb 100644 --- a/arch/arm/mach-tegra/pm.h +++ b/arch/arm/mach-tegra/pm.h @@ -25,7 +25,6 @@ void tegra30_sleep_core_init(void); void tegra_clear_cpu_in_lp2(void); bool tegra_set_cpu_in_lp2(void); -int tegra_cpu_do_idle(void); void tegra_idle_lp2_last(void); extern void (*tegra_tear_down_cpu)(void); diff --git a/arch/arm/mach-tegra/reset-handler.S b/arch/arm/mach-tegra/reset-handler.S index 67b763fea005..df44828a34d3 100644 --- a/arch/arm/mach-tegra/reset-handler.S +++ b/arch/arm/mach-tegra/reset-handler.S @@ -183,17 +183,6 @@ after_errata: bleq __die @ CPU not present (to OS) #endif -#ifdef CONFIG_ARCH_TEGRA_2x_SOC - /* Are we on Tegra20? */ - cmp r6, #TEGRA20 - bne 1f - /* If not CPU0, don't let CPU0 reset CPU1 now that CPU1 is coming up. */ - mov r0, #CPU_NOT_RESETTABLE - cmp r10, #0 - strbne r0, [r12, #RESET_DATA(RESETTABLE_STATUS)] -1: -#endif - /* Waking up from LP1? */ ldr r8, [r12, #RESET_DATA(MASK_LP1)] tst r8, r11 @ if in_lp1 diff --git a/arch/arm/mach-tegra/reset.h b/arch/arm/mach-tegra/reset.h index a4cfc08159f6..51265592cb1a 100644 --- a/arch/arm/mach-tegra/reset.h +++ b/arch/arm/mach-tegra/reset.h @@ -16,9 +16,8 @@ #define TEGRA_RESET_STARTUP_SECONDARY 3 #define TEGRA_RESET_STARTUP_LP2 4 #define TEGRA_RESET_STARTUP_LP1 5 -#define TEGRA_RESET_RESETTABLE_STATUS 6 -#define TEGRA_RESET_TF_PRESENT 7 -#define TEGRA_RESET_DATA_SIZE 8 +#define TEGRA_RESET_TF_PRESENT 6 +#define TEGRA_RESET_DATA_SIZE 7 #define RESET_DATA(x) ((TEGRA_RESET_##x)*4) @@ -42,10 +41,6 @@ void __tegra_cpu_reset_handler_end(void); (IO_ADDRESS(TEGRA_IRAM_BASE + TEGRA_IRAM_RESET_HANDLER_OFFSET + \ ((u32)&__tegra_cpu_reset_handler_data[TEGRA_RESET_MASK_LP2] - \ (u32)__tegra_cpu_reset_handler_start))) -#define tegra20_cpu1_resettable_status \ - (IO_ADDRESS(TEGRA_IRAM_BASE + TEGRA_IRAM_RESET_HANDLER_OFFSET + \ - ((u32)&__tegra_cpu_reset_handler_data[TEGRA_RESET_RESETTABLE_STATUS] - \ - (u32)__tegra_cpu_reset_handler_start))) #endif #define tegra_cpu_reset_handler_offset \ diff --git a/arch/arm/mach-tegra/sleep-tegra20.S b/arch/arm/mach-tegra/sleep-tegra20.S index 9a89f30d53ca..6fb14f76235f 100644 --- a/arch/arm/mach-tegra/sleep-tegra20.S +++ b/arch/arm/mach-tegra/sleep-tegra20.S @@ -43,9 +43,6 @@ #define APB_MISC_XM2CFGCPADCTRL2 0x8e4 #define APB_MISC_XM2CFGDPADCTRL2 0x8e8 -#define __tegra20_cpu1_resettable_status_offset \ - (__tegra_cpu_reset_handler_data_offset + RESET_DATA(RESETTABLE_STATUS)) - .macro pll_enable, rd, r_car_base, pll_base ldr \rd, [\r_car_base, #\pll_base] tst \rd, #(1 << 30) @@ -64,21 +61,6 @@ /* * tegra20_hotplug_shutdown(void) * - * puts the current cpu in reset - * should never return - */ -ENTRY(tegra20_hotplug_shutdown) - /* Put this CPU down */ - cpu_id r0 - bl tegra20_cpu_shutdown - ret lr @ should never get here -ENDPROC(tegra20_hotplug_shutdown) - -/* - * tegra20_cpu_shutdown(int cpu) - * - * r0 is cpu to reset - * * puts the specified CPU in wait-for-event mode on the flow controller * and puts the CPU in reset * can be called on the current cpu or another cpu @@ -87,13 +69,10 @@ ENDPROC(tegra20_hotplug_shutdown) * * corrupts r0-r3, r12 */ -ENTRY(tegra20_cpu_shutdown) +ENTRY(tegra20_hotplug_shutdown) + cpu_id r0 cmp r0, #0 reteq lr @ must not be called for CPU 0 - mov32 r1, TEGRA_IRAM_RESET_BASE_VIRT - ldr r2, =__tegra20_cpu1_resettable_status_offset - mov r12, #CPU_RESETTABLE - strb r12, [r1, r2] cpu_to_halt_reg r1, r0 ldr r3, =TEGRA_FLOW_CTRL_VIRT @@ -112,111 +91,10 @@ ENTRY(tegra20_cpu_shutdown) cmp r3, r0 beq . ret lr -ENDPROC(tegra20_cpu_shutdown) +ENDPROC(tegra20_hotplug_shutdown) #endif #ifdef CONFIG_PM_SLEEP -/* - * tegra_pen_lock - * - * spinlock implementation with no atomic test-and-set and no coherence - * using Peterson's algorithm on strongly-ordered registers - * used to synchronize a cpu waking up from wfi with entering lp2 on idle - * - * The reference link of Peterson's algorithm: - * http://en.wikipedia.org/wiki/Peterson's_algorithm - * - * SCRATCH37 = r1 = !turn (inverted from Peterson's algorithm) - * on cpu 0: - * r2 = flag[0] (in SCRATCH38) - * r3 = flag[1] (in SCRATCH39) - * on cpu1: - * r2 = flag[1] (in SCRATCH39) - * r3 = flag[0] (in SCRATCH38) - * - * must be called with MMU on - * corrupts r0-r3, r12 - */ -ENTRY(tegra_pen_lock) - mov32 r3, TEGRA_PMC_VIRT - cpu_id r0 - add r1, r3, #PMC_SCRATCH37 - cmp r0, #0 - addeq r2, r3, #PMC_SCRATCH38 - addeq r3, r3, #PMC_SCRATCH39 - addne r2, r3, #PMC_SCRATCH39 - addne r3, r3, #PMC_SCRATCH38 - - mov r12, #1 - str r12, [r2] @ flag[cpu] = 1 - dsb - str r12, [r1] @ !turn = cpu -1: dsb - ldr r12, [r3] - cmp r12, #1 @ flag[!cpu] == 1? - ldreq r12, [r1] - cmpeq r12, r0 @ !turn == cpu? - beq 1b @ while !turn == cpu && flag[!cpu] == 1 - - ret lr @ locked -ENDPROC(tegra_pen_lock) - -ENTRY(tegra_pen_unlock) - dsb - mov32 r3, TEGRA_PMC_VIRT - cpu_id r0 - cmp r0, #0 - addeq r2, r3, #PMC_SCRATCH38 - addne r2, r3, #PMC_SCRATCH39 - mov r12, #0 - str r12, [r2] - ret lr -ENDPROC(tegra_pen_unlock) - -/* - * tegra20_cpu_clear_resettable(void) - * - * Called to clear the "resettable soon" flag in IRAM variable when - * it is expected that the secondary CPU will be idle soon. - */ -ENTRY(tegra20_cpu_clear_resettable) - mov32 r1, TEGRA_IRAM_RESET_BASE_VIRT - ldr r2, =__tegra20_cpu1_resettable_status_offset - mov r12, #CPU_NOT_RESETTABLE - strb r12, [r1, r2] - ret lr -ENDPROC(tegra20_cpu_clear_resettable) - -/* - * tegra20_cpu_set_resettable_soon(void) - * - * Called to set the "resettable soon" flag in IRAM variable when - * it is expected that the secondary CPU will be idle soon. - */ -ENTRY(tegra20_cpu_set_resettable_soon) - mov32 r1, TEGRA_IRAM_RESET_BASE_VIRT - ldr r2, =__tegra20_cpu1_resettable_status_offset - mov r12, #CPU_RESETTABLE_SOON - strb r12, [r1, r2] - ret lr -ENDPROC(tegra20_cpu_set_resettable_soon) - -/* - * tegra20_cpu_is_resettable_soon(void) - * - * Returns true if the "resettable soon" flag in IRAM variable has been - * set because it is expected that the secondary CPU will be idle soon. - */ -ENTRY(tegra20_cpu_is_resettable_soon) - mov32 r1, TEGRA_IRAM_RESET_BASE_VIRT - ldr r2, =__tegra20_cpu1_resettable_status_offset - ldrb r12, [r1, r2] - cmp r12, #CPU_RESETTABLE_SOON - moveq r0, #1 - movne r0, #0 - ret lr -ENDPROC(tegra20_cpu_is_resettable_soon) - /* * tegra20_sleep_core_finish(unsigned long v2p) * @@ -242,68 +120,6 @@ ENTRY(tegra20_sleep_core_finish) ret r3 ENDPROC(tegra20_sleep_core_finish) -/* - * tegra20_sleep_cpu_secondary_finish(unsigned long v2p) - * - * Enters WFI on secondary CPU by exiting coherency. - */ -ENTRY(tegra20_sleep_cpu_secondary_finish) - stmfd sp!, {r4-r11, lr} - - mrc p15, 0, r11, c1, c0, 1 @ save actlr before exiting coherency - - /* Flush and disable the L1 data cache */ - mov r0, #TEGRA_FLUSH_CACHE_LOUIS - bl tegra_disable_clean_inv_dcache - - mov32 r0, TEGRA_IRAM_RESET_BASE_VIRT - ldr r4, =__tegra20_cpu1_resettable_status_offset - mov r3, #CPU_RESETTABLE - strb r3, [r0, r4] - - bl tegra_cpu_do_idle - - /* - * cpu may be reset while in wfi, which will return through - * tegra_resume to cpu_resume - * or interrupt may wake wfi, which will return here - * cpu state is unchanged - MMU is on, cache is on, coherency - * is off, and the data cache is off - * - * r11 contains the original actlr - */ - - bl tegra_pen_lock - - mov32 r0, TEGRA_IRAM_RESET_BASE_VIRT - ldr r4, =__tegra20_cpu1_resettable_status_offset - mov r3, #CPU_NOT_RESETTABLE - strb r3, [r0, r4] - - bl tegra_pen_unlock - - /* Re-enable the data cache */ - mrc p15, 0, r10, c1, c0, 0 - orr r10, r10, #CR_C - mcr p15, 0, r10, c1, c0, 0 - isb - - mcr p15, 0, r11, c1, c0, 1 @ reenable coherency - - /* Invalidate the TLBs & BTAC */ - mov r1, #0 - mcr p15, 0, r1, c8, c3, 0 @ invalidate shared TLBs - mcr p15, 0, r1, c7, c1, 6 @ invalidate shared BTAC - dsb - isb - - /* the cpu was running with coherency disabled, - * caches may be out of date */ - bl v7_flush_kern_cache_louis - - ldmfd sp!, {r4 - r11, pc} -ENDPROC(tegra20_sleep_cpu_secondary_finish) - /* * tegra20_tear_down_cpu * diff --git a/arch/arm/mach-tegra/sleep.h b/arch/arm/mach-tegra/sleep.h index 78ef32a907c8..d219872b7546 100644 --- a/arch/arm/mach-tegra/sleep.h +++ b/arch/arm/mach-tegra/sleep.h @@ -114,8 +114,6 @@ .endm #else -void tegra_pen_lock(void); -void tegra_pen_unlock(void); void tegra_resume(void); int tegra_sleep_cpu_finish(unsigned long); void tegra_disable_clean_inv_dcache(u32 flag); @@ -125,16 +123,6 @@ void tegra20_hotplug_shutdown(void); void tegra30_hotplug_shutdown(void); #endif -void tegra20_cpu_shutdown(int cpu); -int tegra20_cpu_is_resettable_soon(void); -void tegra20_cpu_clear_resettable(void); -#ifdef CONFIG_ARCH_TEGRA_2x_SOC -void tegra20_cpu_set_resettable_soon(void); -#else -static inline void tegra20_cpu_set_resettable_soon(void) {} -#endif - -int tegra20_sleep_cpu_secondary_finish(unsigned long); void tegra20_tear_down_cpu(void); int tegra30_sleep_cpu_secondary_finish(unsigned long); void tegra30_tear_down_cpu(void); diff --git a/arch/arm/mach-tegra/tegra.c b/arch/arm/mach-tegra/tegra.c index e512e606eabd..d9237769a37c 100644 --- a/arch/arm/mach-tegra/tegra.c +++ b/arch/arm/mach-tegra/tegra.c @@ -40,9 +40,7 @@ #include "board.h" #include "common.h" -#include "cpuidle.h" #include "iomap.h" -#include "irq.h" #include "pm.h" #include "reset.h" #include "sleep.h" @@ -86,7 +84,6 @@ static void __init tegra_dt_init(void) static void __init tegra_dt_init_late(void) { tegra_init_suspend(); - tegra_cpuidle_init(); if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC) && of_machine_is_compatible("compal,paz00")) diff --git a/drivers/soc/tegra/Kconfig b/drivers/soc/tegra/Kconfig index c8ef05d6b8c7..d98c69efb7e0 100644 --- a/drivers/soc/tegra/Kconfig +++ b/drivers/soc/tegra/Kconfig @@ -6,7 +6,6 @@ if ARM config ARCH_TEGRA_2x_SOC bool "Enable support for Tegra20 family" - select ARCH_NEEDS_CPU_IDLE_COUPLED if SMP select ARM_ERRATA_720789 select ARM_ERRATA_754327 if SMP select ARM_ERRATA_764369 if SMP diff --git a/include/soc/tegra/cpuidle.h b/include/soc/tegra/cpuidle.h index 029ba1f4b2cc..f758808342b6 100644 --- a/include/soc/tegra/cpuidle.h +++ b/include/soc/tegra/cpuidle.h @@ -6,12 +6,8 @@ #ifndef __SOC_TEGRA_CPUIDLE_H__ #define __SOC_TEGRA_CPUIDLE_H__ -#if defined(CONFIG_ARM) && defined(CONFIG_ARCH_TEGRA) && defined(CONFIG_CPU_IDLE) -void tegra_cpuidle_pcie_irqs_in_use(void); -#else static inline void tegra_cpuidle_pcie_irqs_in_use(void) { } -#endif #endif /* __SOC_TEGRA_CPUIDLE_H__ */