From patchwork Tue Dec 19 22:03:20 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sam Ravnborg via B4 Relay X-Patchwork-Id: 13499224 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 719A33FB03; Tue, 19 Dec 2023 22:03:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="UXuy/jSM" Received: by smtp.kernel.org (Postfix) with ESMTPS id 36FE9C43140; Tue, 19 Dec 2023 22:03:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1703023396; bh=nyYkYuiVqyCR04RXBg22IyXtbGaFXThr3PFMPOtukLY=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=UXuy/jSMfjZCEjI1VdiOpjbZNymmaGaZhoOoagGsQ+pQP8OJ3fP0KAdX8ghCvrgyd Uj7a9TILRU24l6U+RHL/ccTCXFXIvNRXuuh79zfg6itRoE0IqJC+UNJ5XZPb9ms8Ls jx60yVpc8iMbmxG9mKZxsF4mRICoLSMMnoKTJtEZcVeQUlpOIEanoAIZ3SrbDxW/gg J3vBaou45/oc5LOIgrbjKyn1kV0oK48e3NawBkC4fK3xx47Pdu1L3837WqFUDw1MLc JPKENcH9MEVeNWxHjC0FdOUjYoOod4Amx5GoFmlTEwKlrVlZr7g5ptURvmLSnHWnYn s8v4UvThze6wQ== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 25E3FC46CD8; Tue, 19 Dec 2023 22:03:16 +0000 (UTC) From: Sam Ravnborg via B4 Relay Date: Tue, 19 Dec 2023 23:03:20 +0100 Subject: [PATCH 15/27] sparc32: Drop check for sparc_model Precedence: bulk X-Mailing-List: linux-fbdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20231219-sam-sparc32-sunset-v3-v1-15-64bb44b598c5@ravnborg.org> References: <20231219-sam-sparc32-sunset-v3-v1-0-64bb44b598c5@ravnborg.org> In-Reply-To: <20231219-sam-sparc32-sunset-v3-v1-0-64bb44b598c5@ravnborg.org> To: "David S. Miller" , Arnd Bergmann , Andreas Larsson Cc: Helge Deller , Alexander Viro , Greg Kroah-Hartman , Alan Stern , Jaroslav Kysela , Takashi Iwai , sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-sound@vger.kernel.org, Sam Ravnborg X-Mailer: b4 0.12.4 X-Developer-Signature: v=1; a=ed25519-sha256; t=1703023392; l=7589; i=sam@ravnborg.org; s=20230107; h=from:subject:message-id; bh=Ug/1kUk7xzX48rBhZcKGw3mgqlUZBCpZ4RMKG+8KP+I=; =?utf-8?q?b=3DbXvVFC5D/ZOI?= =?utf-8?q?dS61qfHNUW1erQ8hUNKMVTRiVKdXtTQ08Rg2XH2GNL3zQHM+NUQrelsZTxUS4hc3?= I2b/ASr1AO20iUlMauOuxsmyi1k/Ey2dEm/cRlWtL7nX9bePme1x X-Developer-Key: i=sam@ravnborg.org; a=ed25519; pk=R0+pqV7BRYOAeOIGkyOrSNke7arx5y3LkEuNi37YEyU= X-Endpoint-Received: by B4 Relay for sam@ravnborg.org/20230107 with auth_id=22 X-Original-From: Sam Ravnborg Reply-To: From: Sam Ravnborg sparc32 is always LEON, so no need to check for the model. Signed-off-by: Sam Ravnborg Cc: "David S. Miller" Cc: Arnd Bergmann Cc: Andreas Larsson --- arch/sparc/include/asm/cpu_type.h | 18 --------- arch/sparc/include/asm/io_32.h | 4 +- arch/sparc/include/asm/pgtsrmmu.h | 1 - arch/sparc/kernel/devices.c | 7 +--- arch/sparc/kernel/ioport.c | 4 +- arch/sparc/kernel/leon_pmc.c | 16 ++++---- arch/sparc/kernel/setup_32.c | 79 +-------------------------------------- 7 files changed, 12 insertions(+), 117 deletions(-) diff --git a/arch/sparc/include/asm/cpu_type.h b/arch/sparc/include/asm/cpu_type.h index 2b59799859d1..3e0154c3f41d 100644 --- a/arch/sparc/include/asm/cpu_type.h +++ b/arch/sparc/include/asm/cpu_type.h @@ -2,28 +2,10 @@ #ifndef __ASM_CPU_TYPE_H #define __ASM_CPU_TYPE_H -/* - * Sparc (general) CPU types - */ -enum sparc_cpu { - sun4m = 0x00, - sun4d = 0x01, - sun4e = 0x02, - sun4u = 0x03, /* V8 ploos ploos */ - sun_unknown = 0x04, - ap1000 = 0x05, /* almost a sun4m */ - sparc_leon = 0x06, /* Leon SoC */ -}; - #ifdef CONFIG_SPARC32 -extern enum sparc_cpu sparc_cpu_model; #define SUN4M_NCPUS 4 /* Architectural limit of sun4m. */ -#else - -#define sparc_cpu_model sun4u - #endif #endif /* __ASM_CPU_TYPE_H */ diff --git a/arch/sparc/include/asm/io_32.h b/arch/sparc/include/asm/io_32.h index 549f0a72280d..83abe709d120 100644 --- a/arch/sparc/include/asm/io_32.h +++ b/arch/sparc/include/asm/io_32.h @@ -138,11 +138,11 @@ void pci_iounmap(struct pci_dev *dev, void __iomem *); static inline int sbus_can_dma_64bit(void) { - return 0; /* actually, sparc_cpu_model==sun4d */ + return 0; } static inline int sbus_can_burst64(void) { - return 0; /* actually, sparc_cpu_model==sun4d */ + return 0; } struct device; void sbus_set_sbus64(struct device *, int); diff --git a/arch/sparc/include/asm/pgtsrmmu.h b/arch/sparc/include/asm/pgtsrmmu.h index 7cb5cbc83211..664d4bba1bcb 100644 --- a/arch/sparc/include/asm/pgtsrmmu.h +++ b/arch/sparc/include/asm/pgtsrmmu.h @@ -124,7 +124,6 @@ static inline void srmmu_flush_whole_tlb(void) "i" (ASI_M_FLUSH_PROBE) : "memory"); } - #endif /* !(__ASSEMBLY__) */ #endif /* !(_SPARC_PGTSRMMU_H) */ diff --git a/arch/sparc/kernel/devices.c b/arch/sparc/kernel/devices.c index b3c2d51b22c4..2963e89611a3 100644 --- a/arch/sparc/kernel/devices.c +++ b/arch/sparc/kernel/devices.c @@ -26,8 +26,6 @@ static char *cpu_mid_prop(void) { - if (sparc_cpu_model == sun4d) - return "cpu-id"; return "mid"; } @@ -40,8 +38,6 @@ static int check_cpu_node(phandle nd, int *cur_inst, *prom_node = nd; if (mid) { *mid = prom_getintdefault(nd, cpu_mid_prop(), 0); - if (sparc_cpu_model == sun4m) - *mid &= 3; } return 0; } @@ -92,8 +88,7 @@ static int cpu_mid_compare(phandle nd, int instance, void *_arg) int this_mid; this_mid = prom_getintdefault(nd, cpu_mid_prop(), 0); - if (this_mid == desired_mid - || (sparc_cpu_model == sun4m && (this_mid & 3) == desired_mid)) + if (this_mid == desired_mid) return 0; return -ENODEV; } diff --git a/arch/sparc/kernel/ioport.c b/arch/sparc/kernel/ioport.c index 5ebca5c7af1e..cf0ace29704a 100644 --- a/arch/sparc/kernel/ioport.c +++ b/arch/sparc/kernel/ioport.c @@ -309,9 +309,7 @@ arch_initcall(sparc_register_ioport); void arch_sync_dma_for_cpu(phys_addr_t paddr, size_t size, enum dma_data_direction dir) { - if (dir != DMA_TO_DEVICE && - sparc_cpu_model == sparc_leon && - !sparc_leon3_snooping_enabled()) + if (dir != DMA_TO_DEVICE && !sparc_leon3_snooping_enabled()) leon_flush_dcache_all(); } diff --git a/arch/sparc/kernel/leon_pmc.c b/arch/sparc/kernel/leon_pmc.c index 6c00cbad7fb5..d4a2d49f941c 100644 --- a/arch/sparc/kernel/leon_pmc.c +++ b/arch/sparc/kernel/leon_pmc.c @@ -79,15 +79,13 @@ static void pmc_leon_idle(void) /* Install LEON Power Down function */ static int __init leon_pmc_install(void) { - if (sparc_cpu_model == sparc_leon) { - /* Assign power management IDLE handler */ - if (pmc_leon_need_fixup()) - sparc_idle = pmc_leon_idle_fixup; - else - sparc_idle = pmc_leon_idle; - - printk(KERN_INFO "leon: power management initialized\n"); - } + /* Assign power management IDLE handler */ + if (pmc_leon_need_fixup()) + sparc_idle = pmc_leon_idle_fixup; + else + sparc_idle = pmc_leon_idle; + + printk(KERN_INFO "leon: power management initialized\n"); return 0; } diff --git a/arch/sparc/kernel/setup_32.c b/arch/sparc/kernel/setup_32.c index 5a497140c52a..cb981f2794b3 100644 --- a/arch/sparc/kernel/setup_32.c +++ b/arch/sparc/kernel/setup_32.c @@ -189,30 +189,12 @@ static void __init per_cpu_patch(void) { struct cpuid_patch_entry *p; - if (sparc_cpu_model == sun4m) { - /* Nothing to do, this is what the unpatched code - * targets. - */ - return; - } - p = &__cpuid_patch; while (p < &__cpuid_patch_end) { unsigned long addr = p->addr; unsigned int *insns; - switch (sparc_cpu_model) { - case sun4d: - insns = &p->sun4d[0]; - break; - - case sparc_leon: - insns = &p->leon[0]; - break; - default: - prom_printf("Unknown cpu type, halting.\n"); - prom_halt(); - } + insns = &p->leon[0]; *(unsigned int *) (addr + 0) = insns[0]; flushi(addr + 0); *(unsigned int *) (addr + 4) = insns[1]; @@ -224,31 +206,9 @@ static void __init per_cpu_patch(void) } } -struct leon_1insn_patch_entry { - unsigned int addr; - unsigned int insn; -}; - -enum sparc_cpu sparc_cpu_model; -EXPORT_SYMBOL(sparc_cpu_model); - static __init void leon_patch(void) { - struct leon_1insn_patch_entry *start = (void *)__leon_1insn_patch; - struct leon_1insn_patch_entry *end = (void *)__leon_1insn_patch_end; - /* Default instruction is leon - no patching */ - if (sparc_cpu_model == sparc_leon) - return; - - while (start < end) { - unsigned long addr = start->addr; - - *(unsigned int *)(addr) = start->insn; - flushi(addr); - - start++; - } } struct tt_entry *sparc_ttable; @@ -259,22 +219,6 @@ struct tt_entry *sparc_ttable; void __init sparc32_start_kernel(struct linux_romvec *rp) { prom_init(rp); - - /* Set sparc_cpu_model */ - sparc_cpu_model = sun_unknown; - if (!strcmp(&cputypval[0], "sun4m")) - sparc_cpu_model = sun4m; - if (!strcmp(&cputypval[0], "sun4s")) - sparc_cpu_model = sun4m; /* CP-1200 with PROM 2.30 -E */ - if (!strcmp(&cputypval[0], "sun4d")) - sparc_cpu_model = sun4d; - if (!strcmp(&cputypval[0], "sun4e")) - sparc_cpu_model = sun4e; - if (!strcmp(&cputypval[0], "sun4u")) - sparc_cpu_model = sun4u; - if (!strncmp(&cputypval[0], "leon" , 4)) - sparc_cpu_model = sparc_leon; - leon_patch(); start_kernel(); } @@ -295,27 +239,6 @@ void __init setup_arch(char **cmdline_p) register_console(&prom_early_console); - switch(sparc_cpu_model) { - case sun4m: - pr_info("ARCH: SUN4M\n"); - break; - case sun4d: - pr_info("ARCH: SUN4D\n"); - break; - case sun4e: - pr_info("ARCH: SUN4E\n"); - break; - case sun4u: - pr_info("ARCH: SUN4U\n"); - break; - case sparc_leon: - pr_info("ARCH: LEON\n"); - break; - default: - pr_info("ARCH: UNKNOWN!\n"); - break; - } - idprom_init(); load_mmu();