[PATCH v2 3/5] sunxi: psci: stop modeling register layout with C structs
Sam Edwards
cfsworks at gmail.com
Wed Aug 16 19:34:18 CEST 2023
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 at gmail.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 e2845f21ab..6ecdd05250 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);
}
}
@@ -110,25 +116,20 @@ 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;
} 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) {
@@ -150,37 +151,25 @@ 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));
}
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 4aaebe0a97..0000000000
--- 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 at 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 */
--
2.41.0
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