From patchwork Tue Dec 19 22:03:11 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: 756254 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 4B4B13D0DD; 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="dC1sXLKa" Received: by smtp.kernel.org (Postfix) with ESMTPS id BACCCC43395; Tue, 19 Dec 2023 22:03:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1703023395; bh=0R9PzmtGxdJ6USDK3n4JiDrY3Q7MGOjxmyoxB9HDftA=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=dC1sXLKaC1mdDV9xpjM1S8WSoY9HoRLnfOJbm+uXk2+xFwPPUBHhNAq6vmIEeYC3r MzfbLTLD3zY60lu7yrcrtuLdlsNl7Rq3IuFrKirdtJS68dX8S25X2oN7Wu6ebgIDD7 +D7wwEJHAOhcJVS0aHTLhjiLPst+mTW2UwLZjisGW8yLvMYBk2T4xB/uA3vsO2UIhj 0GnpMb6WS0mfxz7qEKCBuLS61KgY+SmffGALXDea5pS++iXCM0DY2pxhM2M7EISiZx SG+pwU+bZ0PVcVm9vRqWHgrT6VNiiLvJ0Wg8unT5JURhFwmtXRm36zfreb8wuRnHas 5GEr0ObY73U/g== 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 AA4E7C46CD2; Tue, 19 Dec 2023 22:03:15 +0000 (UTC) From: Sam Ravnborg via B4 Relay Date: Tue, 19 Dec 2023 23:03:11 +0100 Subject: [PATCH 06/27] sparc32: Drop auxio support 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-v1-6-64bb44b598c5@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=10968; i=sam@ravnborg.org; s=20230107; h=from:subject:message-id; bh=uPRcNTHpc3apZmH38dH08GpG9gby+F03Z/5vNFNt+bQ=; =?utf-8?q?b=3DizbwVBxoepZr?= =?utf-8?q?5JXsCurPkXmxDhF7NTC6N0iyi+sg9aUQ7sZEdku9HTiFcFOA2jw/0aMKhz4LDPsu?= N6j8wXkRBfrUv9dq+TB23KE1Cir6b/VexmmdWaCzgSig1RPwG8pY 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 auxio is not supported by LEON - so drop it. Signed-off-by: Sam Ravnborg Cc: "David S. Miller" Cc: Arnd Bergmann Cc: Andreas Larsson --- arch/sparc/include/asm/auxio_32.h | 73 +------------------- arch/sparc/kernel/Makefile | 2 +- arch/sparc/kernel/auxio_32.c | 139 -------------------------------------- arch/sparc/kernel/devices.c | 3 - arch/sparc/kernel/kernel.h | 4 -- arch/sparc/kernel/process_32.c | 10 --- arch/sparc/prom/misc_32.c | 2 - 7 files changed, 3 insertions(+), 230 deletions(-) diff --git a/arch/sparc/include/asm/auxio_32.h b/arch/sparc/include/asm/auxio_32.h index 852457c7a265..e2335ddd359d 100644 --- a/arch/sparc/include/asm/auxio_32.h +++ b/arch/sparc/include/asm/auxio_32.h @@ -1,43 +1,12 @@ /* SPDX-License-Identifier: GPL-2.0 */ /* - * auxio.h: Definitions and code for the Auxiliary I/O register. + * Dummy definitions for the Auxiliary I/O register. * * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) */ #ifndef _SPARC_AUXIO_H #define _SPARC_AUXIO_H -#include - -/* This register is an unsigned char in IO space. It does two things. - * First, it is used to control the front panel LED light on machines - * that have it (good for testing entry points to trap handlers and irq's) - * Secondly, it controls various floppy drive parameters. - */ -#define AUXIO_ORMEIN 0xf0 /* All writes must set these bits. */ -#define AUXIO_ORMEIN4M 0xc0 /* sun4m - All writes must set these bits. */ -#define AUXIO_FLPY_DENS 0x20 /* Floppy density, high if set. Read only. */ -#define AUXIO_FLPY_DCHG 0x10 /* A disk change occurred. Read only. */ -#define AUXIO_EDGE_ON 0x10 /* sun4m - On means Jumper block is in. */ -#define AUXIO_FLPY_DSEL 0x08 /* Drive select/start-motor. Write only. */ -#define AUXIO_LINK_TEST 0x08 /* sun4m - On means TPE Carrier detect. */ - -/* Set the following to one, then zero, after doing a pseudo DMA transfer. */ -#define AUXIO_FLPY_TCNT 0x04 /* Floppy terminal count. Write only. */ - -/* Set the following to zero to eject the floppy. */ -#define AUXIO_FLPY_EJCT 0x02 /* Eject floppy disk. Write only. */ -#define AUXIO_LED 0x01 /* On if set, off if unset. Read/Write */ - -#ifndef __ASSEMBLY__ - -/* - * NOTE: these routines are implementation dependent-- - * understand the hardware you are querying! - */ -void set_auxio(unsigned char bits_on, unsigned char bits_off); -unsigned char get_auxio(void); /* .../asm/floppy.h */ - /* * The following routines are provided for driver-compatibility * with sparc64 (primarily sunlance.c) @@ -46,44 +15,6 @@ unsigned char get_auxio(void); /* .../asm/floppy.h */ #define AUXIO_LTE_ON 1 #define AUXIO_LTE_OFF 0 -/* auxio_set_lte - Set Link Test Enable (TPE Link Detect) - * - * on - AUXIO_LTE_ON or AUXIO_LTE_OFF - */ -#define auxio_set_lte(on) \ -do { \ - if(on) { \ - set_auxio(AUXIO_LINK_TEST, 0); \ - } else { \ - set_auxio(0, AUXIO_LINK_TEST); \ - } \ -} while (0) - -#define AUXIO_LED_ON 1 -#define AUXIO_LED_OFF 0 - -/* auxio_set_led - Set system front panel LED - * - * on - AUXIO_LED_ON or AUXIO_LED_OFF - */ -#define auxio_set_led(on) \ -do { \ - if(on) { \ - set_auxio(AUXIO_LED, 0); \ - } else { \ - set_auxio(0, AUXIO_LED); \ - } \ -} while (0) - -#endif /* !(__ASSEMBLY__) */ - - -/* AUXIO2 (Power Off Control) */ -extern volatile u8 __iomem *auxio_power_register; - -#define AUXIO_POWER_DETECT_FAILURE 32 -#define AUXIO_POWER_CLEAR_FAILURE 2 -#define AUXIO_POWER_OFF 1 - +#define auxio_set_lte(on) #endif /* !(_SPARC_AUXIO_H) */ diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile index ab47823f8b4e..577cb57c588a 100644 --- a/arch/sparc/kernel/Makefile +++ b/arch/sparc/kernel/Makefile @@ -83,7 +83,7 @@ obj-$(CONFIG_SMP) += trampoline_$(BITS).o smp_$(BITS).o obj-$(CONFIG_SPARC32_SMP) += sun4m_smp.o sun4d_smp.o leon_smp.o obj-$(CONFIG_SPARC64_SMP) += hvtramp.o -obj-y += auxio_$(BITS).o +obj-$(CONFIG_SPARC64) += auxio_64.o obj-y += termios.o diff --git a/arch/sparc/kernel/auxio_32.c b/arch/sparc/kernel/auxio_32.c deleted file mode 100644 index 989860e890c4..000000000000 --- a/arch/sparc/kernel/auxio_32.c +++ /dev/null @@ -1,139 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* auxio.c: Probing for the Sparc AUXIO register at boot time. - * - * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu) - */ - -#include -#include -#include -#include -#include - -#include -#include -#include -#include /* memset(), Linux has no bzero() */ -#include - -#include "kernel.h" - -/* Probe and map in the Auxiliary I/O register */ - -/* auxio_register is not static because it is referenced - * in entry.S::floppy_tdone - */ -void __iomem *auxio_register = NULL; -static DEFINE_SPINLOCK(auxio_lock); - -void __init auxio_probe(void) -{ - phandle node, auxio_nd; - struct linux_prom_registers auxregs[1]; - struct resource r; - - switch (sparc_cpu_model) { - case sparc_leon: - case sun4d: - return; - default: - break; - } - node = prom_getchild(prom_root_node); - auxio_nd = prom_searchsiblings(node, "auxiliary-io"); - if(!auxio_nd) { - node = prom_searchsiblings(node, "obio"); - node = prom_getchild(node); - auxio_nd = prom_searchsiblings(node, "auxio"); - if(!auxio_nd) { -#ifdef CONFIG_PCI - /* There may be auxio on Ebus */ - return; -#else - if(prom_searchsiblings(node, "leds")) { - /* VME chassis sun4m machine, no auxio exists. */ - return; - } - prom_printf("Cannot find auxio node, cannot continue...\n"); - prom_halt(); -#endif - } - } - if(prom_getproperty(auxio_nd, "reg", (char *) auxregs, sizeof(auxregs)) <= 0) - return; - prom_apply_obio_ranges(auxregs, 0x1); - /* Map the register both read and write */ - r.flags = auxregs[0].which_io & 0xF; - r.start = auxregs[0].phys_addr; - r.end = auxregs[0].phys_addr + auxregs[0].reg_size - 1; - auxio_register = of_ioremap(&r, 0, auxregs[0].reg_size, "auxio"); - /* Fix the address on sun4m. */ - if ((((unsigned long) auxregs[0].phys_addr) & 3) == 3) - auxio_register += (3 - ((unsigned long)auxio_register & 3)); - - set_auxio(AUXIO_LED, 0); -} - -unsigned char get_auxio(void) -{ - if(auxio_register) - return sbus_readb(auxio_register); - return 0; -} -EXPORT_SYMBOL(get_auxio); - -void set_auxio(unsigned char bits_on, unsigned char bits_off) -{ - unsigned char regval; - unsigned long flags; - spin_lock_irqsave(&auxio_lock, flags); - switch (sparc_cpu_model) { - case sun4m: - if(!auxio_register) - break; /* VME chassis sun4m, no auxio. */ - regval = sbus_readb(auxio_register); - sbus_writeb(((regval | bits_on) & ~bits_off) | AUXIO_ORMEIN4M, - auxio_register); - break; - case sun4d: - break; - default: - panic("Can't set AUXIO register on this machine."); - } - spin_unlock_irqrestore(&auxio_lock, flags); -} -EXPORT_SYMBOL(set_auxio); - -/* sun4m power control register (AUXIO2) */ - -volatile u8 __iomem *auxio_power_register = NULL; - -void __init auxio_power_probe(void) -{ - struct linux_prom_registers regs; - phandle node; - struct resource r; - - /* Attempt to find the sun4m power control node. */ - node = prom_getchild(prom_root_node); - node = prom_searchsiblings(node, "obio"); - node = prom_getchild(node); - node = prom_searchsiblings(node, "power"); - if (node == 0 || (s32)node == -1) - return; - - /* Map the power control register. */ - if (prom_getproperty(node, "reg", (char *)®s, sizeof(regs)) <= 0) - return; - prom_apply_obio_ranges(®s, 1); - memset(&r, 0, sizeof(r)); - r.flags = regs.which_io & 0xF; - r.start = regs.phys_addr; - r.end = regs.phys_addr + regs.reg_size - 1; - auxio_power_register = - (u8 __iomem *)of_ioremap(&r, 0, regs.reg_size, "auxpower"); - - /* Display a quick message on the console. */ - if (auxio_power_register) - printk(KERN_INFO "Power off control detected.\n"); -} diff --git a/arch/sparc/kernel/devices.c b/arch/sparc/kernel/devices.c index 23b6e50d4ada..b3c2d51b22c4 100644 --- a/arch/sparc/kernel/devices.c +++ b/arch/sparc/kernel/devices.c @@ -132,7 +132,4 @@ void __init device_scan(void) 0); } #endif /* !CONFIG_SMP */ - - auxio_probe(); - auxio_power_probe(); } diff --git a/arch/sparc/kernel/kernel.h b/arch/sparc/kernel/kernel.h index ef5579496088..c8ba3bc7e137 100644 --- a/arch/sparc/kernel/kernel.h +++ b/arch/sparc/kernel/kernel.h @@ -174,10 +174,6 @@ asmlinkage void user_unaligned_trap(struct pt_regs *regs, unsigned int insn); /* windows.c */ void try_to_clear_window_buffer(struct pt_regs *regs, int who); -/* auxio_32.c */ -void __init auxio_probe(void); -void __init auxio_power_probe(void); - /* pcic.c */ extern void __iomem *pcic_regs; void pcic_nmi(unsigned int pend, struct pt_regs *regs); diff --git a/arch/sparc/kernel/process_32.c b/arch/sparc/kernel/process_32.c index 9c7c662cb565..2e2836f314ca 100644 --- a/arch/sparc/kernel/process_32.c +++ b/arch/sparc/kernel/process_32.c @@ -27,7 +27,6 @@ #include #include -#include #include #include #include @@ -49,8 +48,6 @@ void (*sparc_idle)(void); /* * Power-off handler instantiation for pm.h compliance - * This is done via auxio, but could be used as a fallback - * handler when auxio is not present-- unused for now... */ void (*pm_power_off)(void) = machine_power_off; EXPORT_SYMBOL(pm_power_off); @@ -103,13 +100,6 @@ void machine_restart(char * cmd) void machine_power_off(void) { - if (auxio_power_register && - (!of_node_is_type(of_console_device, "serial") || scons_pwroff)) { - u8 power_register = sbus_readb(auxio_power_register); - power_register |= AUXIO_POWER_OFF; - sbus_writeb(power_register, auxio_power_register); - } - machine_halt(); } diff --git a/arch/sparc/prom/misc_32.c b/arch/sparc/prom/misc_32.c index 625750924860..78dde6bfbf0f 100644 --- a/arch/sparc/prom/misc_32.c +++ b/arch/sparc/prom/misc_32.c @@ -13,7 +13,6 @@ #include #include -#include extern void restore_current(void); @@ -60,7 +59,6 @@ prom_cmdline(void) (*(romvec->pv_abort))(); restore_current(); spin_unlock_irqrestore(&prom_lock, flags); - set_auxio(AUXIO_LED, 0); } /* Drop into the prom, but completely terminate the program.