From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1E996C43387 for ; Wed, 26 Dec 2018 05:19:22 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6648B214D8 for ; Wed, 26 Dec 2018 05:19:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6648B214D8 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=telegraphics.com.au Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 43Ph9337HDzDqMv for ; Wed, 26 Dec 2018 16:19:19 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=telegraphics.com.au Authentication-Results: lists.ozlabs.org; spf=none (mailfrom) smtp.mailfrom=telegraphics.com.au (client-ip=98.124.60.144; helo=kvm5.telegraphics.com.au; envelope-from=fthain@telegraphics.com.au; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=telegraphics.com.au Received: from kvm5.telegraphics.com.au (kvm5.telegraphics.com.au [98.124.60.144]) by lists.ozlabs.org (Postfix) with ESMTP id 43Pgn05RXmzDqHJ for ; Wed, 26 Dec 2018 16:01:56 +1100 (AEDT) Received: by kvm5.telegraphics.com.au (Postfix, from userid 502) id 5A9EB29523; Tue, 25 Dec 2018 19:43:56 -0500 (EST) To: Arnd Bergmann , Greg Kroah-Hartman , Geert Uytterhoeven , Joshua Thompson Message-Id: <505240b144f1666acf26a3c1e93c8e6868fe1408.1545784679.git.fthain@telegraphics.com.au> In-Reply-To: References: From: Finn Thain Subject: [PATCH v8 13/25] m68k: Dispatch nvram_ops calls to Atari or Mac functions Date: Wed, 26 Dec 2018 11:37:59 +1100 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-m68k@lists.linux-m68k.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" A multi-platform kernel binary has to decide at run-time how to dispatch the arch_nvram_ops calls. Add a platform-independent arch_nvram_ops struct for this, to replace the atari-specific one. Enable CONFIG_HAVE_ARCH_NVRAM_OPS for Macs. Signed-off-by: Finn Thain Tested-by: Christian T. Steigies Acked-by: Geert Uytterhoeven Tested-by: Stan Johnson --- arch/m68k/Kconfig.machine | 1 + arch/m68k/atari/nvram.c | 21 ++----- arch/m68k/include/asm/atarihw.h | 6 ++ arch/m68k/include/asm/macintosh.h | 4 ++ arch/m68k/kernel/setup_mm.c | 100 +++++++++++++++++++++++++++++- arch/m68k/mac/misc.c | 11 ++++ 6 files changed, 126 insertions(+), 17 deletions(-) diff --git a/arch/m68k/Kconfig.machine b/arch/m68k/Kconfig.machine index 0c8c4c7982c1..da21783136c7 100644 --- a/arch/m68k/Kconfig.machine +++ b/arch/m68k/Kconfig.machine @@ -27,6 +27,7 @@ config MAC bool "Macintosh support" depends on MMU select MMU_MOTOROLA if MMU + select HAVE_ARCH_NVRAM_OPS help This option enables support for the Apple Macintosh series of computers (yes, there is experimental support now, at least for part diff --git a/arch/m68k/atari/nvram.c b/arch/m68k/atari/nvram.c index 4b27f1683a37..0a6fe59c95e8 100644 --- a/arch/m68k/atari/nvram.c +++ b/arch/m68k/atari/nvram.c @@ -74,7 +74,7 @@ static void __nvram_set_checksum(void) __nvram_write_byte(sum, ATARI_CKS_LOC + 1); } -static long nvram_set_checksum(void) +long atari_nvram_set_checksum(void) { spin_lock_irq(&rtc_lock); __nvram_set_checksum(); @@ -82,7 +82,7 @@ static long nvram_set_checksum(void) return 0; } -static long nvram_initialize(void) +long atari_nvram_initialize(void) { loff_t i; @@ -94,7 +94,7 @@ static long nvram_initialize(void) return 0; } -static ssize_t nvram_read(char *buf, size_t count, loff_t *ppos) +ssize_t atari_nvram_read(char *buf, size_t count, loff_t *ppos) { char *p = buf; loff_t i; @@ -115,7 +115,7 @@ static ssize_t nvram_read(char *buf, size_t count, loff_t *ppos) return p - buf; } -static ssize_t nvram_write(char *buf, size_t count, loff_t *ppos) +ssize_t atari_nvram_write(char *buf, size_t count, loff_t *ppos) { char *p = buf; loff_t i; @@ -138,22 +138,11 @@ static ssize_t nvram_write(char *buf, size_t count, loff_t *ppos) return p - buf; } -static ssize_t nvram_get_size(void) +ssize_t atari_nvram_get_size(void) { - if (!MACH_IS_ATARI) - return -ENODEV; return NVRAM_BYTES; } -const struct nvram_ops arch_nvram_ops = { - .read = nvram_read, - .write = nvram_write, - .get_size = nvram_get_size, - .set_checksum = nvram_set_checksum, - .initialize = nvram_initialize, -}; -EXPORT_SYMBOL(arch_nvram_ops); - #ifdef CONFIG_PROC_FS static struct { unsigned char val; diff --git a/arch/m68k/include/asm/atarihw.h b/arch/m68k/include/asm/atarihw.h index 9000b249d225..533008262b69 100644 --- a/arch/m68k/include/asm/atarihw.h +++ b/arch/m68k/include/asm/atarihw.h @@ -33,6 +33,12 @@ extern int atari_dont_touch_floppy_select; extern int atari_SCC_reset_done; +extern ssize_t atari_nvram_read(char *, size_t, loff_t *); +extern ssize_t atari_nvram_write(char *, size_t, loff_t *); +extern ssize_t atari_nvram_get_size(void); +extern long atari_nvram_set_checksum(void); +extern long atari_nvram_initialize(void); + /* convenience macros for testing machine type */ #define MACH_IS_ST ((atari_mch_cookie >> 16) == ATARI_MCH_ST) #define MACH_IS_STE ((atari_mch_cookie >> 16) == ATARI_MCH_STE && \ diff --git a/arch/m68k/include/asm/macintosh.h b/arch/m68k/include/asm/macintosh.h index 08cee11180e6..d9a08bed4b12 100644 --- a/arch/m68k/include/asm/macintosh.h +++ b/arch/m68k/include/asm/macintosh.h @@ -19,6 +19,10 @@ extern void mac_init_IRQ(void); extern void mac_irq_enable(struct irq_data *data); extern void mac_irq_disable(struct irq_data *data); +extern unsigned char mac_pram_read_byte(int); +extern void mac_pram_write_byte(unsigned char, int); +extern ssize_t mac_pram_get_size(void); + /* * Macintosh Table */ diff --git a/arch/m68k/kernel/setup_mm.c b/arch/m68k/kernel/setup_mm.c index ad0195cbe042..4dd80bb8a283 100644 --- a/arch/m68k/kernel/setup_mm.c +++ b/arch/m68k/kernel/setup_mm.c @@ -24,6 +24,7 @@ #include #include #include +#include #include #include @@ -37,13 +38,14 @@ #ifdef CONFIG_AMIGA #include #endif -#ifdef CONFIG_ATARI #include +#ifdef CONFIG_ATARI #include #endif #ifdef CONFIG_SUN3X #include #endif +#include #include #if !FPSTATESIZE || !NR_IRQS @@ -547,3 +549,99 @@ static int __init adb_probe_sync_enable (char *str) { __setup("adb_sync", adb_probe_sync_enable); #endif /* CONFIG_ADB */ + +#if IS_ENABLED(CONFIG_NVRAM) +#ifdef CONFIG_MAC +static unsigned char m68k_nvram_read_byte(int addr) +{ + if (MACH_IS_MAC) + return mac_pram_read_byte(addr); + return 0xff; +} + +static void m68k_nvram_write_byte(unsigned char val, int addr) +{ + if (MACH_IS_MAC) + mac_pram_write_byte(val, addr); +} +#endif /* CONFIG_MAC */ + +#ifdef CONFIG_ATARI +static ssize_t m68k_nvram_read(char *buf, size_t count, loff_t *ppos) +{ + if (MACH_IS_ATARI) + return atari_nvram_read(buf, count, ppos); + else if (MACH_IS_MAC) { + ssize_t size = mac_pram_get_size(); + char *p = buf; + loff_t i; + + for (i = *ppos; count > 0 && i < size; --count, ++i, ++p) + *p = mac_pram_read_byte(i); + + *ppos = i; + return p - buf; + } + return -EINVAL; +} + +static ssize_t m68k_nvram_write(char *buf, size_t count, loff_t *ppos) +{ + if (MACH_IS_ATARI) + return atari_nvram_write(buf, count, ppos); + else if (MACH_IS_MAC) { + ssize_t size = mac_pram_get_size(); + char *p = buf; + loff_t i; + + for (i = *ppos; count > 0 && i < size; --count, ++i, ++p) + mac_pram_write_byte(*p, i); + + *ppos = i; + return p - buf; + } + return -EINVAL; +} + +static long m68k_nvram_set_checksum(void) +{ + if (MACH_IS_ATARI) + return atari_nvram_set_checksum(); + return -EINVAL; +} + +static long m68k_nvram_initialize(void) +{ + if (MACH_IS_ATARI) + return atari_nvram_initialize(); + return -EINVAL; +} +#endif /* CONFIG_ATARI */ + +static ssize_t m68k_nvram_get_size(void) +{ + if (MACH_IS_ATARI) + return atari_nvram_get_size(); + else if (MACH_IS_MAC) + return mac_pram_get_size(); + return -ENODEV; +} + +/* Atari device drivers call .read (to get checksum validation) whereas + * Mac and PowerMac device drivers just use .read_byte. + */ +const struct nvram_ops arch_nvram_ops = { +#ifdef CONFIG_MAC + .read_byte = m68k_nvram_read_byte, + .write_byte = m68k_nvram_write_byte, +#endif +#ifdef CONFIG_ATARI + .read = m68k_nvram_read, + .write = m68k_nvram_write, + .set_checksum = m68k_nvram_set_checksum, + .initialize = m68k_nvram_initialize, +#endif + .get_size = m68k_nvram_get_size, +}; +EXPORT_SYMBOL(arch_nvram_ops); +#endif /* CONFIG_NVRAM */ diff --git a/arch/m68k/mac/misc.c b/arch/m68k/mac/misc.c index 0009efebb264..b7e6bc037fc4 100644 --- a/arch/m68k/mac/misc.c +++ b/arch/m68k/mac/misc.c @@ -36,6 +36,7 @@ static void (*rom_reset)(void); +#if IS_ENABLED(CONFIG_NVRAM) #ifdef CONFIG_ADB_CUDA static unsigned char cuda_pram_read_byte(int offset) { @@ -84,6 +85,7 @@ static void pmu_pram_write_byte(unsigned char data, int offset) pmu_wait_complete(&req); } #endif /* CONFIG_ADB_PMU */ +#endif /* CONFIG_NVRAM */ /* * VIA PRAM/RTC access routines @@ -205,6 +207,7 @@ static void via_rtc_command(int command, __u8 *data) local_irq_restore(flags); } +#if IS_ENABLED(CONFIG_NVRAM) static unsigned char via_pram_read_byte(int offset) { unsigned char temp; @@ -227,6 +230,7 @@ static void via_pram_write_byte(unsigned char data, int offset) temp = 0x55 | RTC_FLG_WRITE_PROTECT; via_rtc_command(RTC_CMD_WRITE(RTC_REG_WRITE_PROTECT), &temp); } +#endif /* CONFIG_NVRAM */ /* * Return the current time in seconds since January 1, 1904. @@ -372,6 +376,7 @@ static void cuda_shutdown(void) *------------------------------------------------------------------- */ +#if IS_ENABLED(CONFIG_NVRAM) unsigned char mac_pram_read_byte(int addr) { switch (macintosh_config->adb_type) { @@ -417,6 +422,12 @@ void mac_pram_write_byte(unsigned char val, int addr) } } +ssize_t mac_pram_get_size(void) +{ + return 256; +} +#endif /* CONFIG_NVRAM */ + void mac_poweroff(void) { if (oss_present) { -- 2.19.2