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[2604:1380:45d1:ec00::1]) by mx.google.com with ESMTPS id h4-20020a05620a284400b0077da7c84a5asi28721689qkp.53.2023.12.19.14.08.22 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 Dec 2023 14:08:22 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel+bounces-6015-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45d1:ec00::1 as permitted sender) client-ip=2604:1380:45d1:ec00::1; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=hmamGPqs; spf=pass (google.com: domain of linux-kernel+bounces-6015-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45d1:ec00::1 as permitted sender) smtp.mailfrom="linux-kernel+bounces-6015-linux.lists.archive=gmail.com@vger.kernel.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ny.mirrors.kernel.org (Postfix) with ESMTPS id 9F9A91C2523D for ; Tue, 19 Dec 2023 22:08:22 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 98BEF4F5F9; Tue, 19 Dec 2023 22:03:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="hmamGPqs" X-Original-To: linux-kernel@vger.kernel.org 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 510C83D557; Tue, 19 Dec 2023 22:03:16 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id 06B89C433CC; 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=PlMXyekQOmZ+JWokrR3lquvstGM0aEn4kdi/CNEbsdg=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=hmamGPqs81Q9mCCMl6Ed/6/4NJbWuIKitycq8R0fGjPcLfCMaf3m/m1TDe1qbD2GZ BwAaps2RwNV47iEK3dbtgnCVyEoagRdR5cdqi3Zyeu+WVdJ5BZz4vcLtIP3zB/jGuQ x8eg1v3kiLhePpyRki9dSWp+vAaErnY/a+R3ycuHmJN4HeYf/d1R+eQbFEFVzTceEj qcuyft5g1tgkpfJotM/YgmPkon+1IwhYD11es0EGAc0imHgyuE1OooYei8Vbl/D9ck OIlODjGWIsqK2KYpAx8eqGcVawC6jvZR6LT8h1pKA1pmZ9WhaYhbiEhenqO1w+M/bG DdL1RVx1VMVzg== 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 E9E0DC46CCD; Tue, 19 Dec 2023 22:03:15 +0000 (UTC) From: Sam Ravnborg via B4 Relay Date: Tue, 19 Dec 2023 23:03:16 +0100 Subject: [PATCH 11/27] sparc32: Drop pcic support Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20231219-sam-sparc32-sunset-v3-v1-11-64bb44b598c5@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=34263; i=sam@ravnborg.org; s=20230107; h=from:subject:message-id; bh=uRX8vRHYaM+ohYq8gHGopGdLsV8EDe1irKhP8hCVhgk=; =?utf-8?q?b=3DKZIbJxvNeWaW?= =?utf-8?q?ZOsWyvhNqH7ARx3ExGODwAg0wAqxsPvD5XtuPRBaoOpMXoU7npLceLwKH/gFoZ+q?= lXj0lWAJB7KraiIf7vC8DsLYTTkbwdwTxpsUQKbZ7NSXmPdRdHqS 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 pcic is only used by MicroSPARC-IIep and not relevant for LEON. Signed-off-by: Sam Ravnborg Cc: "David S. Miller" Cc: Arnd Bergmann Cc: Andreas Larsson --- arch/sparc/Kconfig | 5 - arch/sparc/include/asm/pcic.h | 130 ------- arch/sparc/kernel/Makefile | 1 - arch/sparc/kernel/entry.S | 48 --- arch/sparc/kernel/irq_32.c | 1 - arch/sparc/kernel/kernel.h | 4 - arch/sparc/kernel/pcic.c | 829 ------------------------------------------ arch/sparc/kernel/time_32.c | 6 +- 8 files changed, 1 insertion(+), 1023 deletions(-) diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 55a9e67c482e..7ae304bab2d8 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -414,11 +414,6 @@ config SUN_LDOMS Say Y here is you want to support virtual devices via Logical Domains. -config PCIC_PCI - bool - depends on PCI && SPARC32 && !SPARC_LEON - default y - config LEON_PCI bool depends on PCI && SPARC_LEON diff --git a/arch/sparc/include/asm/pcic.h b/arch/sparc/include/asm/pcic.h deleted file mode 100644 index 238376b1ffcc..000000000000 --- a/arch/sparc/include/asm/pcic.h +++ /dev/null @@ -1,130 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * pcic.h: JavaEngine 1 specific PCI definitions. - * - * Copyright (C) 1998 V. Roganov and G. Raiko - */ - -#ifndef __SPARC_PCIC_H -#define __SPARC_PCIC_H - -#ifndef __ASSEMBLY__ - -#include -#include -#include -#include -#include - -struct linux_pcic { - void __iomem *pcic_regs; - unsigned long pcic_io; - void __iomem *pcic_config_space_addr; - void __iomem *pcic_config_space_data; - struct resource pcic_res_regs; - struct resource pcic_res_io; - struct resource pcic_res_cfg_addr; - struct resource pcic_res_cfg_data; - struct linux_pbm_info pbm; - struct pcic_ca2irq *pcic_imap; - int pcic_imdim; -}; - -#ifdef CONFIG_PCIC_PCI -int pcic_present(void); -int pcic_probe(void); -void pci_time_init(void); -void sun4m_pci_init_IRQ(void); -#else -static inline int pcic_present(void) { return 0; } -static inline int pcic_probe(void) { return 0; } -static inline void pci_time_init(void) {} -static inline void sun4m_pci_init_IRQ(void) {} -#endif -#endif - -/* Size of PCI I/O space which we relocate. */ -#define PCI_SPACE_SIZE 0x1000000 /* 16 MB */ - -/* PCIC Register Set. */ -#define PCI_DIAGNOSTIC_0 0x40 /* 32 bits */ -#define PCI_SIZE_0 0x44 /* 32 bits */ -#define PCI_SIZE_1 0x48 /* 32 bits */ -#define PCI_SIZE_2 0x4c /* 32 bits */ -#define PCI_SIZE_3 0x50 /* 32 bits */ -#define PCI_SIZE_4 0x54 /* 32 bits */ -#define PCI_SIZE_5 0x58 /* 32 bits */ -#define PCI_PIO_CONTROL 0x60 /* 8 bits */ -#define PCI_DVMA_CONTROL 0x62 /* 8 bits */ -#define PCI_DVMA_CONTROL_INACTIVITY_REQ (1<<0) -#define PCI_DVMA_CONTROL_IOTLB_ENABLE (1<<0) -#define PCI_DVMA_CONTROL_IOTLB_DISABLE 0 -#define PCI_DVMA_CONTROL_INACTIVITY_ACK (1<<4) -#define PCI_INTERRUPT_CONTROL 0x63 /* 8 bits */ -#define PCI_CPU_INTERRUPT_PENDING 0x64 /* 32 bits */ -#define PCI_DIAGNOSTIC_1 0x68 /* 16 bits */ -#define PCI_SOFTWARE_INT_CLEAR 0x6a /* 16 bits */ -#define PCI_SOFTWARE_INT_SET 0x6e /* 16 bits */ -#define PCI_SYS_INT_PENDING 0x70 /* 32 bits */ -#define PCI_SYS_INT_PENDING_PIO 0x40000000 -#define PCI_SYS_INT_PENDING_DMA 0x20000000 -#define PCI_SYS_INT_PENDING_PCI 0x10000000 -#define PCI_SYS_INT_PENDING_APSR 0x08000000 -#define PCI_SYS_INT_TARGET_MASK 0x74 /* 32 bits */ -#define PCI_SYS_INT_TARGET_MASK_CLEAR 0x78 /* 32 bits */ -#define PCI_SYS_INT_TARGET_MASK_SET 0x7c /* 32 bits */ -#define PCI_SYS_INT_PENDING_CLEAR 0x83 /* 8 bits */ -#define PCI_SYS_INT_PENDING_CLEAR_ALL 0x80 -#define PCI_SYS_INT_PENDING_CLEAR_PIO 0x40 -#define PCI_SYS_INT_PENDING_CLEAR_DMA 0x20 -#define PCI_SYS_INT_PENDING_CLEAR_PCI 0x10 -#define PCI_IOTLB_CONTROL 0x84 /* 8 bits */ -#define PCI_INT_SELECT_LO 0x88 /* 16 bits */ -#define PCI_ARBITRATION_SELECT 0x8a /* 16 bits */ -#define PCI_INT_SELECT_HI 0x8c /* 16 bits */ -#define PCI_HW_INT_OUTPUT 0x8e /* 16 bits */ -#define PCI_IOTLB_RAM_INPUT 0x90 /* 32 bits */ -#define PCI_IOTLB_CAM_INPUT 0x94 /* 32 bits */ -#define PCI_IOTLB_RAM_OUTPUT 0x98 /* 32 bits */ -#define PCI_IOTLB_CAM_OUTPUT 0x9c /* 32 bits */ -#define PCI_SMBAR0 0xa0 /* 8 bits */ -#define PCI_MSIZE0 0xa1 /* 8 bits */ -#define PCI_PMBAR0 0xa2 /* 8 bits */ -#define PCI_SMBAR1 0xa4 /* 8 bits */ -#define PCI_MSIZE1 0xa5 /* 8 bits */ -#define PCI_PMBAR1 0xa6 /* 8 bits */ -#define PCI_SIBAR 0xa8 /* 8 bits */ -#define PCI_SIBAR_ADDRESS_MASK 0xf -#define PCI_ISIZE 0xa9 /* 8 bits */ -#define PCI_ISIZE_16M 0xf -#define PCI_ISIZE_32M 0xe -#define PCI_ISIZE_64M 0xc -#define PCI_ISIZE_128M 0x8 -#define PCI_ISIZE_256M 0x0 -#define PCI_PIBAR 0xaa /* 8 bits */ -#define PCI_CPU_COUNTER_LIMIT_HI 0xac /* 32 bits */ -#define PCI_CPU_COUNTER_LIMIT_LO 0xb0 /* 32 bits */ -#define PCI_CPU_COUNTER_LIMIT 0xb4 /* 32 bits */ -#define PCI_SYS_LIMIT 0xb8 /* 32 bits */ -#define PCI_SYS_COUNTER 0xbc /* 32 bits */ -#define PCI_SYS_COUNTER_OVERFLOW (1<<31) /* Limit reached */ -#define PCI_SYS_LIMIT_PSEUDO 0xc0 /* 32 bits */ -#define PCI_USER_TIMER_CONTROL 0xc4 /* 8 bits */ -#define PCI_USER_TIMER_CONFIG 0xc5 /* 8 bits */ -#define PCI_COUNTER_IRQ 0xc6 /* 8 bits */ -#define PCI_COUNTER_IRQ_SET(sys_irq, cpu_irq) ((((sys_irq) & 0xf) << 4) | \ - ((cpu_irq) & 0xf)) -#define PCI_COUNTER_IRQ_SYS(v) (((v) >> 4) & 0xf) -#define PCI_COUNTER_IRQ_CPU(v) ((v) & 0xf) -#define PCI_PIO_ERROR_COMMAND 0xc7 /* 8 bits */ -#define PCI_PIO_ERROR_ADDRESS 0xc8 /* 32 bits */ -#define PCI_IOTLB_ERROR_ADDRESS 0xcc /* 32 bits */ -#define PCI_SYS_STATUS 0xd0 /* 8 bits */ -#define PCI_SYS_STATUS_RESET_ENABLE (1<<0) -#define PCI_SYS_STATUS_RESET (1<<1) -#define PCI_SYS_STATUS_WATCHDOG_RESET (1<<4) -#define PCI_SYS_STATUS_PCI_RESET (1<<5) -#define PCI_SYS_STATUS_PCI_RESET_ENABLE (1<<6) -#define PCI_SYS_STATUS_PCI_SATTELITE_MODE (1<<7) - -#endif /* !(__SPARC_PCIC_H) */ diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile index 386bbb30fff2..09577e39037c 100644 --- a/arch/sparc/kernel/Makefile +++ b/arch/sparc/kernel/Makefile @@ -74,7 +74,6 @@ obj-$(CONFIG_SPARC64) += pcr.o obj-$(CONFIG_SPARC64) += nmi.o obj-$(CONFIG_SPARC64_SMP) += cpumap.o -obj-$(CONFIG_PCIC_PCI) += pcic.o obj-$(CONFIG_LEON_PCI) += leon_pci.o obj-$(CONFIG_SPARC_GRPCI2)+= leon_pci_grpci2.o obj-$(CONFIG_SPARC_GRPCI1)+= leon_pci_grpci1.o diff --git a/arch/sparc/kernel/entry.S b/arch/sparc/kernel/entry.S index 9bd3813b872d..13011969e7eb 100644 --- a/arch/sparc/kernel/entry.S +++ b/arch/sparc/kernel/entry.S @@ -965,54 +965,6 @@ restore_current: retl nop -#ifdef CONFIG_PCIC_PCI -#include - - .align 4 - .globl linux_trap_ipi15_pcic -linux_trap_ipi15_pcic: - rd %wim, %l3 - SAVE_ALL - - /* - * First deactivate NMI - * or we cannot drop ET, cannot get window spill traps. - * The busy loop is necessary because the PIO error - * sometimes does not go away quickly and we trap again. - */ - sethi %hi(pcic_regs), %o1 - ld [%o1 + %lo(pcic_regs)], %o2 - - ! Get pending status for printouts later. - ld [%o2 + PCI_SYS_INT_PENDING], %o0 - - mov PCI_SYS_INT_PENDING_CLEAR_ALL, %o1 - stb %o1, [%o2 + PCI_SYS_INT_PENDING_CLEAR] -1: - ld [%o2 + PCI_SYS_INT_PENDING], %o1 - andcc %o1, ((PCI_SYS_INT_PENDING_PIO|PCI_SYS_INT_PENDING_PCI)>>24), %g0 - bne 1b - nop - - or %l0, PSR_PIL, %l4 - wr %l4, 0x0, %psr - WRITE_PAUSE - wr %l4, PSR_ET, %psr - WRITE_PAUSE - - call pcic_nmi - add %sp, STACKFRAME_SZ, %o1 ! struct pt_regs *regs - RESTORE_ALL - - .globl pcic_nmi_trap_patch -pcic_nmi_trap_patch: - sethi %hi(linux_trap_ipi15_pcic), %l3 - jmpl %l3 + %lo(linux_trap_ipi15_pcic), %g0 - rd %psr, %l0 - .word 0 - -#endif /* CONFIG_PCIC_PCI */ - .globl flushw_all flushw_all: save %sp, -0x40, %sp diff --git a/arch/sparc/kernel/irq_32.c b/arch/sparc/kernel/irq_32.c index 135170f362c1..a6af08fce796 100644 --- a/arch/sparc/kernel/irq_32.c +++ b/arch/sparc/kernel/irq_32.c @@ -19,7 +19,6 @@ #include #include #include -#include #include #include "kernel.h" diff --git a/arch/sparc/kernel/kernel.h b/arch/sparc/kernel/kernel.h index ff8f412e3153..a14812903629 100644 --- a/arch/sparc/kernel/kernel.h +++ b/arch/sparc/kernel/kernel.h @@ -138,10 +138,6 @@ 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); -/* pcic.c */ -extern void __iomem *pcic_regs; -void pcic_nmi(unsigned int pend, struct pt_regs *regs); - /* time_32.c */ void __init time_init(void); diff --git a/arch/sparc/kernel/pcic.c b/arch/sparc/kernel/pcic.c deleted file mode 100644 index d952bcbbc395..000000000000 --- a/arch/sparc/kernel/pcic.c +++ /dev/null @@ -1,829 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * pcic.c: MicroSPARC-IIep PCI controller support - * - * Copyright (C) 1998 V. Roganov and G. Raiko - * - * Code is derived from Ultra/PCI PSYCHO controller support, see that - * for author info. - * - * Support for diverse IIep based platforms by Pete Zaitcev. - * CP-1200 by Eric Brower. - */ - -#include -#include -#include -#include -#include -#include - -#include /* for cache flushing. */ -#include - -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include -#include -#include - -#include "kernel.h" -#include "irq.h" - -/* - * I studied different documents and many live PROMs both from 2.30 - * family and 3.xx versions. I came to the amazing conclusion: there is - * absolutely no way to route interrupts in IIep systems relying on - * information which PROM presents. We must hardcode interrupt routing - * schematics. And this actually sucks. -- zaitcev 1999/05/12 - * - * To find irq for a device we determine which routing map - * is in effect or, in other words, on which machine we are running. - * We use PROM name for this although other techniques may be used - * in special cases (Gleb reports a PROMless IIep based system). - * Once we know the map we take device configuration address and - * find PCIC pin number where INT line goes. Then we may either program - * preferred irq into the PCIC or supply the preexisting irq to the device. - */ -struct pcic_ca2irq { - unsigned char busno; /* PCI bus number */ - unsigned char devfn; /* Configuration address */ - unsigned char pin; /* PCIC external interrupt pin */ - unsigned char irq; /* Preferred IRQ (mappable in PCIC) */ - unsigned int force; /* Enforce preferred IRQ */ -}; - -struct pcic_sn2list { - char *sysname; - struct pcic_ca2irq *intmap; - int mapdim; -}; - -/* - * JavaEngine-1 apparently has different versions. - * - * According to communications with Sun folks, for P2 build 501-4628-03: - * pin 0 - parallel, audio; - * pin 1 - Ethernet; - * pin 2 - su; - * pin 3 - PS/2 kbd and mouse. - * - * OEM manual (805-1486): - * pin 0: Ethernet - * pin 1: All EBus - * pin 2: IGA (unused) - * pin 3: Not connected - * OEM manual says that 501-4628 & 501-4811 are the same thing, - * only the latter has NAND flash in place. - * - * So far unofficial Sun wins over the OEM manual. Poor OEMs... - */ -static struct pcic_ca2irq pcic_i_je1a[] = { /* 501-4811-03 */ - { 0, 0x00, 2, 12, 0 }, /* EBus: hogs all */ - { 0, 0x01, 1, 6, 1 }, /* Happy Meal */ - { 0, 0x80, 0, 7, 0 }, /* IGA (unused) */ -}; - -/* XXX JS-E entry is incomplete - PCI Slot 2 address (pin 7)? */ -static struct pcic_ca2irq pcic_i_jse[] = { - { 0, 0x00, 0, 13, 0 }, /* Ebus - serial and keyboard */ - { 0, 0x01, 1, 6, 0 }, /* hme */ - { 0, 0x08, 2, 9, 0 }, /* VGA - we hope not used :) */ - { 0, 0x10, 6, 8, 0 }, /* PCI INTA# in Slot 1 */ - { 0, 0x18, 7, 12, 0 }, /* PCI INTA# in Slot 2, shared w. RTC */ - { 0, 0x38, 4, 9, 0 }, /* All ISA devices. Read 8259. */ - { 0, 0x80, 5, 11, 0 }, /* EIDE */ - /* {0,0x88, 0,0,0} - unknown device... PMU? Probably no interrupt. */ - { 0, 0xA0, 4, 9, 0 }, /* USB */ - /* - * Some pins belong to non-PCI devices, we hardcode them in drivers. - * sun4m timers - irq 10, 14 - * PC style RTC - pin 7, irq 4 ? - * Smart card, Parallel - pin 4 shared with USB, ISA - * audio - pin 3, irq 5 ? - */ -}; - -/* SPARCengine-6 was the original release name of CP1200. - * The documentation differs between the two versions - */ -static struct pcic_ca2irq pcic_i_se6[] = { - { 0, 0x08, 0, 2, 0 }, /* SCSI */ - { 0, 0x01, 1, 6, 0 }, /* HME */ - { 0, 0x00, 3, 13, 0 }, /* EBus */ -}; - -/* - * Krups (courtesy of Varol Kaptan) - * No documentation available, but it was easy to guess - * because it was very similar to Espresso. - * - * pin 0 - kbd, mouse, serial; - * pin 1 - Ethernet; - * pin 2 - igs (we do not use it); - * pin 3 - audio; - * pin 4,5,6 - unused; - * pin 7 - RTC (from P2 onwards as David B. says). - */ -static struct pcic_ca2irq pcic_i_jk[] = { - { 0, 0x00, 0, 13, 0 }, /* Ebus - serial and keyboard */ - { 0, 0x01, 1, 6, 0 }, /* hme */ -}; - -/* - * Several entries in this list may point to the same routing map - * as several PROMs may be installed on the same physical board. - */ -#define SN2L_INIT(name, map) \ - { name, map, ARRAY_SIZE(map) } - -static struct pcic_sn2list pcic_known_sysnames[] = { - SN2L_INIT("SUNW,JavaEngine1", pcic_i_je1a), /* JE1, PROM 2.32 */ - SN2L_INIT("SUNW,JS-E", pcic_i_jse), /* PROLL JavaStation-E */ - SN2L_INIT("SUNW,SPARCengine-6", pcic_i_se6), /* SPARCengine-6/CP-1200 */ - SN2L_INIT("SUNW,JS-NC", pcic_i_jk), /* PROLL JavaStation-NC */ - SN2L_INIT("SUNW,JSIIep", pcic_i_jk), /* OBP JavaStation-NC */ - { NULL, NULL, 0 } -}; - -/* - * Only one PCIC per IIep, - * and since we have no SMP IIep, only one per system. - */ -static int pcic0_up; -static struct linux_pcic pcic0; - -void __iomem *pcic_regs; -static volatile int pcic_speculative; -static volatile int pcic_trapped; - -/* forward */ -unsigned int pcic_build_device_irq(struct platform_device *op, - unsigned int real_irq); - -#define CONFIG_CMD(bus, device_fn, where) (0x80000000 | (((unsigned int)bus) << 16) | (((unsigned int)device_fn) << 8) | (where & ~3)) - -static int pcic_read_config_dword(unsigned int busno, unsigned int devfn, - int where, u32 *value) -{ - struct linux_pcic *pcic; - unsigned long flags; - - pcic = &pcic0; - - local_irq_save(flags); -#if 0 /* does not fail here */ - pcic_speculative = 1; - pcic_trapped = 0; -#endif - writel(CONFIG_CMD(busno, devfn, where), pcic->pcic_config_space_addr); -#if 0 /* does not fail here */ - nop(); - if (pcic_trapped) { - local_irq_restore(flags); - *value = ~0; - return 0; - } -#endif - pcic_speculative = 2; - pcic_trapped = 0; - *value = readl(pcic->pcic_config_space_data + (where&4)); - nop(); - if (pcic_trapped) { - pcic_speculative = 0; - local_irq_restore(flags); - *value = ~0; - return 0; - } - pcic_speculative = 0; - local_irq_restore(flags); - return 0; -} - -static int pcic_read_config(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 *val) -{ - unsigned int v; - - if (bus->number != 0) return -EINVAL; - switch (size) { - case 1: - pcic_read_config_dword(bus->number, devfn, where&~3, &v); - *val = 0xff & (v >> (8*(where & 3))); - return 0; - case 2: - if (where&1) return -EINVAL; - pcic_read_config_dword(bus->number, devfn, where&~3, &v); - *val = 0xffff & (v >> (8*(where & 3))); - return 0; - case 4: - if (where&3) return -EINVAL; - pcic_read_config_dword(bus->number, devfn, where&~3, val); - return 0; - } - return -EINVAL; -} - -static int pcic_write_config_dword(unsigned int busno, unsigned int devfn, - int where, u32 value) -{ - struct linux_pcic *pcic; - unsigned long flags; - - pcic = &pcic0; - - local_irq_save(flags); - writel(CONFIG_CMD(busno, devfn, where), pcic->pcic_config_space_addr); - writel(value, pcic->pcic_config_space_data + (where&4)); - local_irq_restore(flags); - return 0; -} - -static int pcic_write_config(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 val) -{ - unsigned int v; - - if (bus->number != 0) return -EINVAL; - switch (size) { - case 1: - pcic_read_config_dword(bus->number, devfn, where&~3, &v); - v = (v & ~(0xff << (8*(where&3)))) | - ((0xff&val) << (8*(where&3))); - return pcic_write_config_dword(bus->number, devfn, where&~3, v); - case 2: - if (where&1) return -EINVAL; - pcic_read_config_dword(bus->number, devfn, where&~3, &v); - v = (v & ~(0xffff << (8*(where&3)))) | - ((0xffff&val) << (8*(where&3))); - return pcic_write_config_dword(bus->number, devfn, where&~3, v); - case 4: - if (where&3) return -EINVAL; - return pcic_write_config_dword(bus->number, devfn, where, val); - } - return -EINVAL; -} - -static struct pci_ops pcic_ops = { - .read = pcic_read_config, - .write = pcic_write_config, -}; - -/* - * On sparc64 pcibios_init() calls pci_controller_probe(). - * We want PCIC probed little ahead so that interrupt controller - * would be operational. - */ -int __init pcic_probe(void) -{ - struct linux_pcic *pcic; - struct linux_prom_registers regs[PROMREG_MAX]; - struct linux_pbm_info* pbm; - char namebuf[64]; - phandle node; - int err; - - if (pcic0_up) { - prom_printf("PCIC: called twice!\n"); - prom_halt(); - } - pcic = &pcic0; - - node = prom_getchild (prom_root_node); - node = prom_searchsiblings (node, "pci"); - if (node == 0) - return -ENODEV; - /* - * Map in PCIC register set, config space, and IO base - */ - err = prom_getproperty(node, "reg", (char*)regs, sizeof(regs)); - if (err == 0 || err == -1) { - prom_printf("PCIC: Error, cannot get PCIC registers " - "from PROM.\n"); - prom_halt(); - } - - pcic0_up = 1; - - pcic->pcic_res_regs.name = "pcic_registers"; - pcic->pcic_regs = ioremap(regs[0].phys_addr, regs[0].reg_size); - if (!pcic->pcic_regs) { - prom_printf("PCIC: Error, cannot map PCIC registers.\n"); - prom_halt(); - } - - pcic->pcic_res_io.name = "pcic_io"; - if ((pcic->pcic_io = (unsigned long) - ioremap(regs[1].phys_addr, 0x10000)) == 0) { - prom_printf("PCIC: Error, cannot map PCIC IO Base.\n"); - prom_halt(); - } - - pcic->pcic_res_cfg_addr.name = "pcic_cfg_addr"; - if ((pcic->pcic_config_space_addr = - ioremap(regs[2].phys_addr, regs[2].reg_size * 2)) == NULL) { - prom_printf("PCIC: Error, cannot map " - "PCI Configuration Space Address.\n"); - prom_halt(); - } - - /* - * Docs say three least significant bits in address and data - * must be the same. Thus, we need adjust size of data. - */ - pcic->pcic_res_cfg_data.name = "pcic_cfg_data"; - if ((pcic->pcic_config_space_data = - ioremap(regs[3].phys_addr, regs[3].reg_size * 2)) == NULL) { - prom_printf("PCIC: Error, cannot map " - "PCI Configuration Space Data.\n"); - prom_halt(); - } - - pbm = &pcic->pbm; - pbm->prom_node = node; - prom_getstring(node, "name", namebuf, 63); namebuf[63] = 0; - strcpy(pbm->prom_name, namebuf); - - prom_getstring(prom_root_node, "name", namebuf, 63); namebuf[63] = 0; - { - struct pcic_sn2list *p; - - for (p = pcic_known_sysnames; p->sysname != NULL; p++) { - if (strcmp(namebuf, p->sysname) == 0) - break; - } - pcic->pcic_imap = p->intmap; - pcic->pcic_imdim = p->mapdim; - } - if (pcic->pcic_imap == NULL) { - /* - * We do not panic here for the sake of embedded systems. - */ - printk("PCIC: System %s is unknown, cannot route interrupts\n", - namebuf); - } - - return 0; -} - -static void __init pcic_pbm_scan_bus(struct linux_pcic *pcic) -{ - struct linux_pbm_info *pbm = &pcic->pbm; - - pbm->pci_bus = pci_scan_bus(pbm->pci_first_busno, &pcic_ops, pbm); - if (!pbm->pci_bus) - return; - -#if 0 /* deadwood transplanted from sparc64 */ - pci_fill_in_pbm_cookies(pbm->pci_bus, pbm, pbm->prom_node); - pci_record_assignments(pbm, pbm->pci_bus); - pci_assign_unassigned(pbm, pbm->pci_bus); - pci_fixup_irq(pbm, pbm->pci_bus); -#endif - pci_bus_add_devices(pbm->pci_bus); -} - -/* - * Main entry point from the PCI subsystem. - */ -static int __init pcic_init(void) -{ - struct linux_pcic *pcic; - - /* - * PCIC should be initialized at start of the timer. - * So, here we report the presence of PCIC and do some magic passes. - */ - if(!pcic0_up) - return 0; - pcic = &pcic0; - - /* - * Switch off IOTLB translation. - */ - writeb(PCI_DVMA_CONTROL_IOTLB_DISABLE, - pcic->pcic_regs+PCI_DVMA_CONTROL); - - /* - * Increase mapped size for PCI memory space (DMA access). - * Should be done in that order (size first, address second). - * Why we couldn't set up 4GB and forget about it? XXX - */ - writel(0xF0000000UL, pcic->pcic_regs+PCI_SIZE_0); - writel(0+PCI_BASE_ADDRESS_SPACE_MEMORY, - pcic->pcic_regs+PCI_BASE_ADDRESS_0); - - pcic_pbm_scan_bus(pcic); - - return 0; -} - -int pcic_present(void) -{ - return pcic0_up; -} - -static int pdev_to_pnode(struct linux_pbm_info *pbm, struct pci_dev *pdev) -{ - struct linux_prom_pci_registers regs[PROMREG_MAX]; - int err; - phandle node = prom_getchild(pbm->prom_node); - - while(node) { - err = prom_getproperty(node, "reg", - (char *)®s[0], sizeof(regs)); - if(err != 0 && err != -1) { - unsigned long devfn = (regs[0].which_io >> 8) & 0xff; - if(devfn == pdev->devfn) - return node; - } - node = prom_getsibling(node); - } - return 0; -} - -static inline struct pcidev_cookie *pci_devcookie_alloc(void) -{ - return kmalloc(sizeof(struct pcidev_cookie), GFP_ATOMIC); -} - -static void pcic_map_pci_device(struct linux_pcic *pcic, - struct pci_dev *dev, int node) -{ - char namebuf[64]; - unsigned long address; - unsigned long flags; - int j; - - if (node == 0 || node == -1) { - strcpy(namebuf, "???"); - } else { - prom_getstring(node, "name", namebuf, 63); namebuf[63] = 0; - } - - for (j = 0; j < 6; j++) { - address = dev->resource[j].start; - if (address == 0) break; /* are sequential */ - flags = dev->resource[j].flags; - if ((flags & IORESOURCE_IO) != 0) { - if (address < 0x10000) { - /* - * A device responds to I/O cycles on PCI. - * We generate these cycles with memory - * access into the fixed map (phys 0x30000000). - * - * Since a device driver does not want to - * do ioremap() before accessing PC-style I/O, - * we supply virtual, ready to access address. - * - * Note that request_region() - * works for these devices. - * - * XXX Neat trick, but it's a *bad* idea - * to shit into regions like that. - * What if we want to allocate one more - * PCI base address... - */ - dev->resource[j].start = - pcic->pcic_io + address; - dev->resource[j].end = 1; /* XXX */ - dev->resource[j].flags = - (flags & ~IORESOURCE_IO) | IORESOURCE_MEM; - } else { - /* - * OOPS... PCI Spec allows this. Sun does - * not have any devices getting above 64K - * so it must be user with a weird I/O - * board in a PCI slot. We must remap it - * under 64K but it is not done yet. XXX - */ - pci_info(dev, "PCIC: Skipping I/O space at " - "0x%lx, this will Oops if a driver " - "attaches device '%s'\n", address, - namebuf); - } - } - } -} - -static void -pcic_fill_irq(struct linux_pcic *pcic, struct pci_dev *dev, int node) -{ - struct pcic_ca2irq *p; - unsigned int real_irq; - int i, ivec; - char namebuf[64]; - - if (node == 0 || node == -1) { - strcpy(namebuf, "???"); - } else { - prom_getstring(node, "name", namebuf, sizeof(namebuf)); - } - - if ((p = pcic->pcic_imap) == NULL) { - dev->irq = 0; - return; - } - for (i = 0; i < pcic->pcic_imdim; i++) { - if (p->busno == dev->bus->number && p->devfn == dev->devfn) - break; - p++; - } - if (i >= pcic->pcic_imdim) { - pci_info(dev, "PCIC: device %s not found in %d\n", namebuf, - pcic->pcic_imdim); - dev->irq = 0; - return; - } - - i = p->pin; - if (i >= 0 && i < 4) { - ivec = readw(pcic->pcic_regs+PCI_INT_SELECT_LO); - real_irq = ivec >> (i << 2) & 0xF; - } else if (i >= 4 && i < 8) { - ivec = readw(pcic->pcic_regs+PCI_INT_SELECT_HI); - real_irq = ivec >> ((i-4) << 2) & 0xF; - } else { /* Corrupted map */ - pci_info(dev, "PCIC: BAD PIN %d\n", i); for (;;) {} - } -/* P3 */ /* printk("PCIC: device %s pin %d ivec 0x%x irq %x\n", namebuf, i, ivec, dev->irq); */ - - /* real_irq means PROM did not bother to program the upper - * half of PCIC. This happens on JS-E with PROM 3.11, for instance. - */ - if (real_irq == 0 || p->force) { - if (p->irq == 0 || p->irq >= 15) { /* Corrupted map */ - pci_info(dev, "PCIC: BAD IRQ %d\n", p->irq); for (;;) {} - } - pci_info(dev, "PCIC: setting irq %d at pin %d\n", p->irq, - p->pin); - real_irq = p->irq; - - i = p->pin; - if (i >= 4) { - ivec = readw(pcic->pcic_regs+PCI_INT_SELECT_HI); - ivec &= ~(0xF << ((i - 4) << 2)); - ivec |= p->irq << ((i - 4) << 2); - writew(ivec, pcic->pcic_regs+PCI_INT_SELECT_HI); - } else { - ivec = readw(pcic->pcic_regs+PCI_INT_SELECT_LO); - ivec &= ~(0xF << (i << 2)); - ivec |= p->irq << (i << 2); - writew(ivec, pcic->pcic_regs+PCI_INT_SELECT_LO); - } - } - dev->irq = pcic_build_device_irq(NULL, real_irq); -} - -/* - * Normally called from {do_}pci_scan_bus... - */ -void pcibios_fixup_bus(struct pci_bus *bus) -{ - struct pci_dev *dev; - struct linux_pcic *pcic; - /* struct linux_pbm_info* pbm = &pcic->pbm; */ - int node; - struct pcidev_cookie *pcp; - - if (!pcic0_up) { - pci_info(bus, "pcibios_fixup_bus: no PCIC\n"); - return; - } - pcic = &pcic0; - - /* - * Next crud is an equivalent of pbm = pcic_bus_to_pbm(bus); - */ - if (bus->number != 0) { - pci_info(bus, "pcibios_fixup_bus: nonzero bus 0x%x\n", - bus->number); - return; - } - - list_for_each_entry(dev, &bus->devices, bus_list) { - node = pdev_to_pnode(&pcic->pbm, dev); - if(node == 0) - node = -1; - - /* cookies */ - pcp = pci_devcookie_alloc(); - pcp->pbm = &pcic->pbm; - pcp->prom_node = of_find_node_by_phandle(node); - dev->sysdata = pcp; - - /* fixing I/O to look like memory */ - if ((dev->class>>16) != PCI_BASE_CLASS_BRIDGE) - pcic_map_pci_device(pcic, dev, node); - - pcic_fill_irq(pcic, dev, node); - } -} - -int pcibios_enable_device(struct pci_dev *dev, int mask) -{ - struct resource *res; - u16 cmd, oldcmd; - int i; - - pci_read_config_word(dev, PCI_COMMAND, &cmd); - oldcmd = cmd; - - pci_dev_for_each_resource(dev, res, i) { - /* Only set up the requested stuff */ - if (!(mask & (1<flags & IORESOURCE_IO) - cmd |= PCI_COMMAND_IO; - if (res->flags & IORESOURCE_MEM) - cmd |= PCI_COMMAND_MEMORY; - } - - if (cmd != oldcmd) { - pci_info(dev, "enabling device (%04x -> %04x)\n", oldcmd, cmd); - pci_write_config_word(dev, PCI_COMMAND, cmd); - } - return 0; -} - -/* Makes compiler happy */ -static volatile int pcic_timer_dummy; - -static void pcic_clear_clock_irq(void) -{ - pcic_timer_dummy = readl(pcic0.pcic_regs+PCI_SYS_LIMIT); -} - -/* CPU frequency is 100 MHz, timer increments every 4 CPU clocks */ -#define USECS_PER_JIFFY (1000000 / HZ) -#define TICK_TIMER_LIMIT ((100 * 1000000 / 4) / HZ) - -static unsigned int pcic_cycles_offset(void) -{ - u32 value, count; - - value = readl(pcic0.pcic_regs + PCI_SYS_COUNTER); - count = value & ~PCI_SYS_COUNTER_OVERFLOW; - - if (value & PCI_SYS_COUNTER_OVERFLOW) - count += TICK_TIMER_LIMIT; - /* - * We divide all by HZ - * to have microsecond resolution and to avoid overflow - */ - count = ((count / HZ) * USECS_PER_JIFFY) / (TICK_TIMER_LIMIT / HZ); - - /* Coordinate with the sparc_config.clock_rate setting */ - return count * 2; -} - -void __init pci_time_init(void) -{ - struct linux_pcic *pcic = &pcic0; - unsigned long v; - int timer_irq, irq; - int err; - -#ifndef CONFIG_SMP - /* - * The clock_rate is in SBUS dimension. - * We take into account this in pcic_cycles_offset() - */ - sparc_config.clock_rate = SBUS_CLOCK_RATE / HZ; - sparc_config.features |= FEAT_L10_CLOCKEVENT; -#endif - sparc_config.features |= FEAT_L10_CLOCKSOURCE; - sparc_config.get_cycles_offset = pcic_cycles_offset; - - writel (TICK_TIMER_LIMIT, pcic->pcic_regs+PCI_SYS_LIMIT); - /* PROM should set appropriate irq */ - v = readb(pcic->pcic_regs+PCI_COUNTER_IRQ); - timer_irq = PCI_COUNTER_IRQ_SYS(v); - writel (PCI_COUNTER_IRQ_SET(timer_irq, 0), - pcic->pcic_regs+PCI_COUNTER_IRQ); - irq = pcic_build_device_irq(NULL, timer_irq); - err = request_irq(irq, timer_interrupt, - IRQF_TIMER, "timer", NULL); - if (err) { - prom_printf("time_init: unable to attach IRQ%d\n", timer_irq); - prom_halt(); - } - local_irq_enable(); -} - - -#if 0 -static void watchdog_reset() { - writeb(0, pcic->pcic_regs+PCI_SYS_STATUS); -} -#endif - -/* - * NMI - */ -void pcic_nmi(unsigned int pend, struct pt_regs *regs) -{ - pend = swab32(pend); - - if (!pcic_speculative || (pend & PCI_SYS_INT_PENDING_PIO) == 0) { - /* - * XXX On CP-1200 PCI #SERR may happen, we do not know - * what to do about it yet. - */ - printk("Aiee, NMI pend 0x%x pc 0x%x spec %d, hanging\n", - pend, (int)regs->pc, pcic_speculative); - for (;;) { } - } - pcic_speculative = 0; - pcic_trapped = 1; - regs->pc = regs->npc; - regs->npc += 4; -} - -static inline unsigned long get_irqmask(int irq_nr) -{ - return 1 << irq_nr; -} - -static void pcic_mask_irq(struct irq_data *data) -{ - unsigned long mask, flags; - - mask = (unsigned long)data->chip_data; - local_irq_save(flags); - writel(mask, pcic0.pcic_regs+PCI_SYS_INT_TARGET_MASK_SET); - local_irq_restore(flags); -} - -static void pcic_unmask_irq(struct irq_data *data) -{ - unsigned long mask, flags; - - mask = (unsigned long)data->chip_data; - local_irq_save(flags); - writel(mask, pcic0.pcic_regs+PCI_SYS_INT_TARGET_MASK_CLEAR); - local_irq_restore(flags); -} - -static unsigned int pcic_startup_irq(struct irq_data *data) -{ - irq_link(data->irq); - pcic_unmask_irq(data); - return 0; -} - -static struct irq_chip pcic_irq = { - .name = "pcic", - .irq_startup = pcic_startup_irq, - .irq_mask = pcic_mask_irq, - .irq_unmask = pcic_unmask_irq, -}; - -unsigned int pcic_build_device_irq(struct platform_device *op, - unsigned int real_irq) -{ - unsigned int irq; - unsigned long mask; - - irq = 0; - mask = get_irqmask(real_irq); - if (mask == 0) - goto out; - - irq = irq_alloc(real_irq, real_irq); - if (irq == 0) - goto out; - - irq_set_chip_and_handler_name(irq, &pcic_irq, - handle_level_irq, "PCIC"); - irq_set_chip_data(irq, (void *)mask); - -out: - return irq; -} - - -static void pcic_load_profile_irq(int cpu, unsigned int limit) -{ - printk("PCIC: unimplemented code: FILE=%s LINE=%d", __FILE__, __LINE__); -} - -void __init sun4m_pci_init_IRQ(void) -{ - sparc_config.build_device_irq = pcic_build_device_irq; - sparc_config.clear_clock_irq = pcic_clear_clock_irq; - sparc_config.load_profile_irq = pcic_load_profile_irq; -} - -subsys_initcall(pcic_init); diff --git a/arch/sparc/kernel/time_32.c b/arch/sparc/kernel/time_32.c index 08bbdc458596..848404610b86 100644 --- a/arch/sparc/kernel/time_32.c +++ b/arch/sparc/kernel/time_32.c @@ -43,7 +43,6 @@ #include #include #include -#include #include #include @@ -347,9 +346,6 @@ void __init time_init(void) sparc_config.features = 0; late_time_init = sparc32_late_time_init; - if (pcic_present()) - pci_time_init(); - else - sbus_time_init(); + sbus_time_init(); } -- 2.34.1