From: Sam Edwards cfsworks@gmail.com
Since the sunxi support nowadays generally prefers #defined register offsets instead of modeling register layouts using C structs, now is a good time to do this for PSCI as well. This patch moves away from using the structs `sunxi_cpucfg_reg` and `sunxi_prcm_reg` in psci.c.
The former struct and its associated header file existed only to support PSCI code, so also delete them altogether.
Signed-off-by: Sam Edwards CFSworks@gmail.com Reviewed-by: Andre Przywara andre.przywara@arm.com --- arch/arm/cpu/armv7/sunxi/psci.c | 57 ++++++++------------ arch/arm/include/asm/arch-sunxi/cpucfg.h | 67 ------------------------ 2 files changed, 23 insertions(+), 101 deletions(-) delete mode 100644 arch/arm/include/asm/arch-sunxi/cpucfg.h
diff --git a/arch/arm/cpu/armv7/sunxi/psci.c b/arch/arm/cpu/armv7/sunxi/psci.c index 27ca9c39e18..207aa6bc4bf 100644 --- a/arch/arm/cpu/armv7/sunxi/psci.c +++ b/arch/arm/cpu/armv7/sunxi/psci.c @@ -11,8 +11,6 @@ #include <asm/cache.h>
#include <asm/arch/cpu.h> -#include <asm/arch/cpucfg.h> -#include <asm/arch/prcm.h> #include <asm/armv7.h> #include <asm/gic.h> #include <asm/io.h> @@ -27,6 +25,17 @@ #define GICD_BASE (SUNXI_GIC400_BASE + GIC_DIST_OFFSET) #define GICC_BASE (SUNXI_GIC400_BASE + GIC_CPU_OFFSET_A15)
+/* + * Offsets into the CPUCFG block applicable to most SUNXIs. + */ +#define SUNXI_CPU_RST(cpu) (0x40 + (cpu) * 0x40 + 0x0) +#define SUNXI_CPU_STATUS(cpu) (0x40 + (cpu) * 0x40 + 0x8) +#define SUNXI_GEN_CTRL (0x184) +#define SUNXI_PRIV0 (0x1a4) +#define SUN7I_CPU1_PWR_CLAMP (0x1b0) +#define SUN7I_CPU1_PWROFF (0x1b4) +#define SUNXI_DBG_CTRL1 (0x1e4) + /* * R40 is different from other single cluster SoCs. * @@ -99,10 +108,7 @@ static void __secure sunxi_cpu_set_entry(int __always_unused cpu, void *entry) writel((u32)entry, SUNXI_SRAMC_BASE + SUN8I_R40_SRAMC_SOFT_ENTRY_REG0); } else { - struct sunxi_cpucfg_reg *cpucfg = - (struct sunxi_cpucfg_reg *)SUNXI_CPUCFG_BASE; - - writel((u32)entry, &cpucfg->priv0); + writel((u32)entry, SUNXI_CPUCFG_BASE + SUNXI_PRIV0); } }
@@ -110,26 +116,21 @@ static void __secure sunxi_cpu_set_power(int cpu, bool on) { u32 *clamp = NULL; u32 *pwroff; - struct sunxi_cpucfg_reg *cpucfg = - (struct sunxi_cpucfg_reg *)SUNXI_CPUCFG_BASE;
/* sun7i (A20) is different from other single cluster SoCs */ if (IS_ENABLED(CONFIG_MACH_SUN7I)) { - clamp = &cpucfg->cpu1_pwr_clamp; - pwroff = &cpucfg->cpu1_pwroff; + clamp = (void *)SUNXI_CPUCFG_BASE + SUN7I_CPU1_PWR_CLAMP; + pwroff = (void *)SUNXI_CPUCFG_BASE + SUN7I_CPU1_PWROFF; cpu = 0; } else if (IS_ENABLED(CONFIG_MACH_SUN8I_R40)) { - clamp = (void *)cpucfg + SUN8I_R40_PWR_CLAMP(cpu); - pwroff = (void *)cpucfg + SUN8I_R40_PWROFF; + clamp = (void *)SUNXI_CPUCFG_BASE + SUN8I_R40_PWR_CLAMP(cpu); + pwroff = (void *)SUNXI_CPUCFG_BASE + SUN8I_R40_PWROFF; } else { - struct sunxi_prcm_reg *prcm = - (struct sunxi_prcm_reg *)SUNXI_PRCM_BASE; - if (IS_ENABLED(CONFIG_MACH_SUN6I) || IS_ENABLED(CONFIG_MACH_SUN8I_H3)) - clamp = &prcm->cpu_pwr_clamp[cpu]; + clamp = (void *)SUNXI_PRCM_BASE + 0x140 + cpu * 0x4;
- pwroff = &prcm->cpu_pwroff; + pwroff = (void *)SUNXI_PRCM_BASE + 0x100; }
if (on) { @@ -151,37 +152,25 @@ static void __secure sunxi_cpu_set_power(int cpu, bool on)
static void __secure sunxi_cpu_set_reset(int cpu, bool reset) { - struct sunxi_cpucfg_reg *cpucfg = - (struct sunxi_cpucfg_reg *)SUNXI_CPUCFG_BASE; - - writel(reset ? 0b00 : 0b11, &cpucfg->cpu[cpu].rst); + writel(reset ? 0b00 : 0b11, SUNXI_CPUCFG_BASE + SUNXI_CPU_RST(cpu)); }
static void __secure sunxi_cpu_set_locking(int cpu, bool lock) { - struct sunxi_cpucfg_reg *cpucfg = - (struct sunxi_cpucfg_reg *)SUNXI_CPUCFG_BASE; - if (lock) - clrbits_le32(&cpucfg->dbg_ctrl1, BIT(cpu)); + clrbits_le32(SUNXI_CPUCFG_BASE + SUNXI_DBG_CTRL1, BIT(cpu)); else - setbits_le32(&cpucfg->dbg_ctrl1, BIT(cpu)); + setbits_le32(SUNXI_CPUCFG_BASE + SUNXI_DBG_CTRL1, BIT(cpu)); }
static bool __secure sunxi_cpu_poll_wfi(int cpu) { - struct sunxi_cpucfg_reg *cpucfg = - (struct sunxi_cpucfg_reg *)SUNXI_CPUCFG_BASE; - - return !!(readl(&cpucfg->cpu[cpu].status) & BIT(2)); + return !!(readl(SUNXI_CPUCFG_BASE + SUNXI_CPU_STATUS(cpu)) & BIT(2)); }
static void __secure sunxi_cpu_invalidate_cache(int cpu) { - struct sunxi_cpucfg_reg *cpucfg = - (struct sunxi_cpucfg_reg *)SUNXI_CPUCFG_BASE; - - clrbits_le32(&cpucfg->gen_ctrl, BIT(cpu)); + clrbits_le32(SUNXI_CPUCFG_BASE + SUNXI_GEN_CTRL, BIT(cpu)); }
static void __secure sunxi_cpu_power_off(u32 cpuid) diff --git a/arch/arm/include/asm/arch-sunxi/cpucfg.h b/arch/arm/include/asm/arch-sunxi/cpucfg.h deleted file mode 100644 index 4aaebe0a976..00000000000 --- a/arch/arm/include/asm/arch-sunxi/cpucfg.h +++ /dev/null @@ -1,67 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0+ */ -/* - * Sunxi A31 CPUCFG register definition. - * - * (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com - */ - -#ifndef _SUNXI_CPUCFG_H -#define _SUNXI_CPUCFG_H - -#include <linux/compiler.h> -#include <linux/types.h> - -#ifndef __ASSEMBLY__ - -struct __packed sunxi_cpucfg_cpu { - u32 rst; /* base + 0x0 */ - u32 ctrl; /* base + 0x4 */ - u32 status; /* base + 0x8 */ - u8 res[0x34]; /* base + 0xc */ -}; - -struct __packed sunxi_cpucfg_reg { - u8 res0[0x40]; /* 0x000 */ - struct sunxi_cpucfg_cpu cpu[4]; /* 0x040 */ - u8 res1[0x44]; /* 0x140 */ - u32 gen_ctrl; /* 0x184 */ - u32 l2_status; /* 0x188 */ - u8 res2[0x4]; /* 0x18c */ - u32 event_in; /* 0x190 */ - u8 res3[0xc]; /* 0x194 */ - u32 super_standy_flag; /* 0x1a0 */ - u32 priv0; /* 0x1a4 */ - u32 priv1; /* 0x1a8 */ - u8 res4[0x4]; /* 0x1ac */ - u32 cpu1_pwr_clamp; /* 0x1b0 sun7i only */ - u32 cpu1_pwroff; /* 0x1b4 sun7i only */ - u8 res5[0x2c]; /* 0x1b8 */ - u32 dbg_ctrl1; /* 0x1e4 */ - u8 res6[0x18]; /* 0x1e8 */ - u32 idle_cnt0_low; /* 0x200 */ - u32 idle_cnt0_high; /* 0x204 */ - u32 idle_cnt0_ctrl; /* 0x208 */ - u8 res8[0x4]; /* 0x20c */ - u32 idle_cnt1_low; /* 0x210 */ - u32 idle_cnt1_high; /* 0x214 */ - u32 idle_cnt1_ctrl; /* 0x218 */ - u8 res9[0x4]; /* 0x21c */ - u32 idle_cnt2_low; /* 0x220 */ - u32 idle_cnt2_high; /* 0x224 */ - u32 idle_cnt2_ctrl; /* 0x228 */ - u8 res10[0x4]; /* 0x22c */ - u32 idle_cnt3_low; /* 0x230 */ - u32 idle_cnt3_high; /* 0x234 */ - u32 idle_cnt3_ctrl; /* 0x238 */ - u8 res11[0x4]; /* 0x23c */ - u32 idle_cnt4_low; /* 0x240 */ - u32 idle_cnt4_high; /* 0x244 */ - u32 idle_cnt4_ctrl; /* 0x248 */ - u8 res12[0x34]; /* 0x24c */ - u32 cnt64_ctrl; /* 0x280 */ - u32 cnt64_low; /* 0x284 */ - u32 cnt64_high; /* 0x288 */ -}; - -#endif /* __ASSEMBLY__ */ -#endif /* _SUNXI_CPUCFG_H */