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a9ff696160
Making virt_to_pfn() a static inline taking a strongly typed (const void *) makes the contract of a passing a pointer of that type to the function explicit and exposes any misuse of the macro virt_to_pfn() acting polymorphic and accepting many types such as (void *), (unitptr_t) or (unsigned long) as arguments without warnings. Doing this is a bit intrusive: virt_to_pfn() requires PHYS_PFN_OFFSET and PAGE_SHIFT to be defined, and this is defined in <asm/page.h>, so this must be included *before* <asm/memory.h>. The use of macros were obscuring the unclear inclusion order here, as the macros would eventually be resolved, but a static inline like this cannot be compiled with unresolved macros. The naive solution to include <asm/page.h> at the top of <asm/memory.h> does not work, because <asm/memory.h> sometimes includes <asm/page.h> at the end of itself, which would create a confusing inclusion loop. So instead, take the approach to always unconditionally include <asm/page.h> at the end of <asm/memory.h> arch/arm uses <asm/memory.h> explicitly in a lot of places, however it turns out that if we just unconditionally include <asm/memory.h> into <asm/page.h> and switch all inclusions of <asm/memory.h> to <asm/page.h> instead, we enforce the right order and <asm/memory.h> will always have access to the definitions. Put an inclusion guard in place making it impossible to include <asm/memory.h> explicitly. Link: https://lore.kernel.org/linux-mm/20220701160004.2ffff4e5ab59a55499f4c736@linux-foundation.org/ Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
88 lines
3 KiB
C
88 lines
3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* SPEAr3xx/6xx Machine family specific definition
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*
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* Copyright (C) 2009,2012 ST Microelectronics
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* Rajeev Kumar<rajeev-dlh.kumar@st.com>
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* Viresh Kumar <vireshk@kernel.org>
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*/
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#ifndef __MACH_SPEAR_H
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#define __MACH_SPEAR_H
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#include <asm/page.h>
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#if defined(CONFIG_ARCH_SPEAR3XX) || defined (CONFIG_ARCH_SPEAR6XX)
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/* ICM1 - Low speed connection */
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#define SPEAR_ICM1_2_BASE UL(0xD0000000)
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#define VA_SPEAR_ICM1_2_BASE IOMEM(0xFD000000)
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#define SPEAR_ICM1_UART_BASE UL(0xD0000000)
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#define VA_SPEAR_ICM1_UART_BASE (VA_SPEAR_ICM1_2_BASE - SPEAR_ICM1_2_BASE + SPEAR_ICM1_UART_BASE)
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#define SPEAR3XX_ICM1_SSP_BASE UL(0xD0100000)
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/* ML-1, 2 - Multi Layer CPU Subsystem */
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#define SPEAR_ICM3_ML1_2_BASE UL(0xF0000000)
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#define VA_SPEAR6XX_ML_CPU_BASE IOMEM(0xF0000000)
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/* ICM3 - Basic Subsystem */
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#define SPEAR_ICM3_SMI_CTRL_BASE UL(0xFC000000)
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#define VA_SPEAR_ICM3_SMI_CTRL_BASE IOMEM(0xFC000000)
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#define SPEAR_ICM3_DMA_BASE UL(0xFC400000)
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#define SPEAR_ICM3_SYS_CTRL_BASE UL(0xFCA00000)
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#define VA_SPEAR_ICM3_SYS_CTRL_BASE (VA_SPEAR_ICM3_SMI_CTRL_BASE - SPEAR_ICM3_SMI_CTRL_BASE + SPEAR_ICM3_SYS_CTRL_BASE)
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#define SPEAR_ICM3_MISC_REG_BASE UL(0xFCA80000)
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#define VA_SPEAR_ICM3_MISC_REG_BASE (VA_SPEAR_ICM3_SMI_CTRL_BASE - SPEAR_ICM3_SMI_CTRL_BASE + SPEAR_ICM3_MISC_REG_BASE)
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/* Debug uart for linux, will be used for debug and uncompress messages */
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#define SPEAR_DBG_UART_BASE SPEAR_ICM1_UART_BASE
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/* Sysctl base for spear platform */
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#define SPEAR_SYS_CTRL_BASE SPEAR_ICM3_SYS_CTRL_BASE
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#define VA_SPEAR_SYS_CTRL_BASE VA_SPEAR_ICM3_SYS_CTRL_BASE
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#endif /* SPEAR3xx || SPEAR6XX */
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/* SPEAr320 Macros */
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#define SPEAR320_SOC_CONFIG_BASE UL(0xB3000000)
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#define VA_SPEAR320_SOC_CONFIG_BASE IOMEM(0xFE000000)
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#ifdef CONFIG_ARCH_SPEAR13XX
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#define PERIP_GRP2_BASE UL(0xB3000000)
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#define VA_PERIP_GRP2_BASE IOMEM(0xF9000000)
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#define MCIF_SDHCI_BASE UL(0xB3000000)
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#define SYSRAM0_BASE UL(0xB3800000)
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#define VA_SYSRAM0_BASE IOMEM(0xF9800000)
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#define SYS_LOCATION (VA_SYSRAM0_BASE + 0x600)
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#define PERIP_GRP1_BASE UL(0xE0000000)
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#define VA_PERIP_GRP1_BASE IOMEM(0xFD000000)
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#define UART_BASE UL(0xE0000000)
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#define VA_UART_BASE IOMEM(0xFD000000)
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#define SSP_BASE UL(0xE0100000)
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#define MISC_BASE UL(0xE0700000)
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#define VA_MISC_BASE IOMEM(0xFD700000)
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#define A9SM_AND_MPMC_BASE UL(0xEC000000)
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#define VA_A9SM_AND_MPMC_BASE IOMEM(0xFC000000)
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#define SPEAR1310_RAS_BASE UL(0xD8400000)
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#define VA_SPEAR1310_RAS_BASE IOMEM(UL(0xFA400000))
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/* A9SM peripheral offsets */
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#define A9SM_PERIP_BASE UL(0xEC800000)
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#define VA_A9SM_PERIP_BASE IOMEM(0xFC800000)
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#define VA_SCU_BASE (VA_A9SM_PERIP_BASE + 0x00)
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#define L2CC_BASE UL(0xED000000)
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#define VA_L2CC_BASE IOMEM(UL(0xFB000000))
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/* others */
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#define MCIF_CF_BASE UL(0xB2800000)
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/* Debug uart for linux, will be used for debug and uncompress messages */
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#define SPEAR_DBG_UART_BASE UART_BASE
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#endif /* SPEAR13XX */
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#endif /* __MACH_SPEAR_H */
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