Received: by 2002:a25:8b12:0:0:0:0:0 with SMTP id i18csp4109642ybl; Tue, 20 Aug 2019 07:09:59 -0700 (PDT) X-Google-Smtp-Source: APXvYqzfVkHXfoFfcLckZUGS/R4BSWDNkOLlLnt1RutLtiBaqCXNmbAJdNjffatLbvyW86kj60WZ X-Received: by 2002:a17:902:b604:: with SMTP id b4mr27539858pls.94.1566310199682; Tue, 20 Aug 2019 07:09:59 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1566310199; cv=none; d=google.com; s=arc-20160816; b=Hbbv7dpH8l8KBCJSewXnMCNQAZzTQKsPR+F9ExttPjdvWp4p+eUnWn9JGvkLJn/IVe y6GWl+l6INixgj+3Y5N/ScGwSta9ZQcLwY1lDGfDp1Oonn+WHxOGPV9fBl0tkPLEiXQ+ yoGJKibvTlLW9/EyDToxHYu95rH0S3RmYRfxFW/xWISGyN7LyolwvbXlOk0+9Ee4CgY4 polU628vOOdM7n/F6BvWLP+ysJVJOsvoR9rqsgTROeUX+08FNz2jw/v0pnsWCwC3krcb IiRDR/5H+RwLcIdtzjC0afl2UVQnBgPDUn8F1ho+LvWsTXNwxPz++BzLZqu/AnfIC7tL 6OQw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:date:cc:to:subject:from:references :in-reply-to:message-id:dkim-signature; bh=0tP4jaOm4qOyX7NpLYWRuf4kptZ6tmkvFZX3819o0xI=; b=RoJ5sej7HeC95dPgGcRcZ+Ww2bc1bkYmCRK1kyN6XUcF6pZbpivq7YJPW+MzUBxNUO cYZFai9GWW26ODHubZcHO03cxAoog72z08OwdHeMmaQvwlUzl8s4Uk92cgMsgMqCXfNA zYrt4U+FZ7a6cHdbeJLHERTFIIFEkO9yIBY+I0zKrEgReYGaV5Kn07PpUDIfO0BqQTZr zAm8Rc7l+YgaLLb+Kfte7QnVZuOefoiXJIiQgtzHZiWSnsxEStQbQv8Yl1OPPwBI2fJ/ K7+lKjdvu1PYMvRCNzmUZveWodmr2o6Crvmm9kaKoIWiak2dVC/WIrDpNLAwqR4c2AxB rZDA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@c-s.fr header.s=mail header.b=dWgH7Vnm; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id i3si12178148pgd.554.2019.08.20.07.09.44; Tue, 20 Aug 2019 07:09:59 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@c-s.fr header.s=mail header.b=dWgH7Vnm; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730197AbfHTOHO (ORCPT + 99 others); Tue, 20 Aug 2019 10:07:14 -0400 Received: from pegase1.c-s.fr ([93.17.236.30]:58994 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729819AbfHTOHM (ORCPT ); Tue, 20 Aug 2019 10:07:12 -0400 Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id 46CXfj3jTPz9v0Gc; Tue, 20 Aug 2019 16:07:09 +0200 (CEST) Authentication-Results: localhost; dkim=pass reason="1024-bit key; insecure key" header.d=c-s.fr header.i=@c-s.fr header.b=dWgH7Vnm; dkim-adsp=pass; dkim-atps=neutral X-Virus-Scanned: Debian amavisd-new at c-s.fr Received: from pegase1.c-s.fr ([192.168.12.234]) by localhost (pegase1.c-s.fr [192.168.12.234]) (amavisd-new, port 10024) with ESMTP id iGhcG5Qf0Q-d; Tue, 20 Aug 2019 16:07:09 +0200 (CEST) Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192]) by pegase1.c-s.fr (Postfix) with ESMTP id 46CXfj2Xxmz9v0GZ; Tue, 20 Aug 2019 16:07:09 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=c-s.fr; s=mail; t=1566310029; bh=0tP4jaOm4qOyX7NpLYWRuf4kptZ6tmkvFZX3819o0xI=; h=In-Reply-To:References:From:Subject:To:Cc:Date:From; b=dWgH7VnmD3U0424OiufD2DPWNk0d1kNGwpU59SUqRr62+sflb17WZaMPzeQf+Of27 vF4AqWANt0MHqtETaB4OhYDygo+XqaTr0ESHUiImVXnswpmIRz3JMgeM5F3+/UgoO/ zpR3y9c/vsVdFseGa1+u0qSTZ9Om091CGgNPC98I= Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id B82CD8B7D0; Tue, 20 Aug 2019 16:07:09 +0200 (CEST) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id wXNbG_vw4FKv; Tue, 20 Aug 2019 16:07:09 +0200 (CEST) Received: from pc16032vm.idsi0.si.c-s.fr (unknown [192.168.4.90]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 5E9D48B7C9; Tue, 20 Aug 2019 16:07:09 +0200 (CEST) Received: by pc16032vm.idsi0.si.c-s.fr (Postfix, from userid 0) id 48B4B6B734; Tue, 20 Aug 2019 14:07:09 +0000 (UTC) Message-Id: <7b1668941ad1041d08b19167030868de5840b153.1566309262.git.christophe.leroy@c-s.fr> In-Reply-To: References: From: Christophe Leroy Subject: [PATCH v2 01/12] powerpc: remove the ppc44x ocm.c file To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , npiggin@gmail.com, hch@lst.de Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Date: Tue, 20 Aug 2019 14:07:09 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Christoph Hellwig The on chip memory allocator is entirely unused in the kernel tree. Signed-off-by: Christoph Hellwig Acked-by: Christophe Leroy Signed-off-by: Christophe Leroy --- arch/powerpc/configs/ppc40x_defconfig | 1 - arch/powerpc/include/asm/ppc4xx_ocm.h | 31 --- arch/powerpc/platforms/44x/Kconfig | 8 - arch/powerpc/platforms/4xx/Makefile | 1 - arch/powerpc/platforms/4xx/ocm.c | 390 ---------------------------------- 5 files changed, 431 deletions(-) delete mode 100644 arch/powerpc/include/asm/ppc4xx_ocm.h delete mode 100644 arch/powerpc/platforms/4xx/ocm.c diff --git a/arch/powerpc/configs/ppc40x_defconfig b/arch/powerpc/configs/ppc40x_defconfig index 8f136b52198b..a5f683aed328 100644 --- a/arch/powerpc/configs/ppc40x_defconfig +++ b/arch/powerpc/configs/ppc40x_defconfig @@ -84,4 +84,3 @@ CONFIG_CRYPTO_ECB=y CONFIG_CRYPTO_PCBC=y CONFIG_CRYPTO_MD5=y CONFIG_CRYPTO_DES=y -CONFIG_PPC4xx_OCM=y diff --git a/arch/powerpc/include/asm/ppc4xx_ocm.h b/arch/powerpc/include/asm/ppc4xx_ocm.h deleted file mode 100644 index fc4db6dcde84..000000000000 --- a/arch/powerpc/include/asm/ppc4xx_ocm.h +++ /dev/null @@ -1,31 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ -/* - * PowerPC 4xx OCM memory allocation support - * - * (C) Copyright 2009, Applied Micro Circuits Corporation - * Victor Gallardo (vgallardo@amcc.com) - * - * See file CREDITS for list of people who contributed to this - * project. - */ - -#ifndef __ASM_POWERPC_PPC4XX_OCM_H__ -#define __ASM_POWERPC_PPC4XX_OCM_H__ - -#define PPC4XX_OCM_NON_CACHED 0 -#define PPC4XX_OCM_CACHED 1 - -#if defined(CONFIG_PPC4xx_OCM) - -void *ppc4xx_ocm_alloc(phys_addr_t *phys, int size, int align, - int flags, const char *owner); -void ppc4xx_ocm_free(const void *virt); - -#else - -#define ppc4xx_ocm_alloc(phys, size, align, flags, owner) NULL -#define ppc4xx_ocm_free(addr) ((void)0) - -#endif /* CONFIG_PPC4xx_OCM */ - -#endif /* __ASM_POWERPC_PPC4XX_OCM_H__ */ diff --git a/arch/powerpc/platforms/44x/Kconfig b/arch/powerpc/platforms/44x/Kconfig index b369ed4e3675..25ebe634a661 100644 --- a/arch/powerpc/platforms/44x/Kconfig +++ b/arch/powerpc/platforms/44x/Kconfig @@ -272,14 +272,6 @@ config PPC4xx_GPIO help Enable gpiolib support for ppc440 based boards -config PPC4xx_OCM - bool "PPC4xx On Chip Memory (OCM) support" - depends on 4xx - select PPC_LIB_RHEAP - help - Enable OCM support for PowerPC 4xx platforms with on chip memory, - OCM provides the fast place for memory access to improve performance. - # 44x specific CPU modules, selected based on the board above. config 440EP bool diff --git a/arch/powerpc/platforms/4xx/Makefile b/arch/powerpc/platforms/4xx/Makefile index f5ae27ca131b..d009d2e0b9e8 100644 --- a/arch/powerpc/platforms/4xx/Makefile +++ b/arch/powerpc/platforms/4xx/Makefile @@ -1,6 +1,5 @@ # SPDX-License-Identifier: GPL-2.0-only obj-y += uic.o machine_check.o -obj-$(CONFIG_PPC4xx_OCM) += ocm.o obj-$(CONFIG_4xx_SOC) += soc.o obj-$(CONFIG_PCI) += pci.o obj-$(CONFIG_PPC4xx_HSTA_MSI) += hsta_msi.o diff --git a/arch/powerpc/platforms/4xx/ocm.c b/arch/powerpc/platforms/4xx/ocm.c deleted file mode 100644 index ba3257406ced..000000000000 --- a/arch/powerpc/platforms/4xx/ocm.c +++ /dev/null @@ -1,390 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * PowerPC 4xx OCM memory allocation support - * - * (C) Copyright 2009, Applied Micro Circuits Corporation - * Victor Gallardo (vgallardo@amcc.com) - * - * See file CREDITS for list of people who contributed to this - * project. - */ - -#include -#include -#include -#include -#include -#include -#include -#include - -#define OCM_DISABLED 0 -#define OCM_ENABLED 1 - -struct ocm_block { - struct list_head list; - void __iomem *addr; - int size; - const char *owner; -}; - -/* non-cached or cached region */ -struct ocm_region { - phys_addr_t phys; - void __iomem *virt; - - int memtotal; - int memfree; - - rh_info_t *rh; - struct list_head list; -}; - -struct ocm_info { - int index; - int status; - int ready; - - phys_addr_t phys; - - int alignment; - int memtotal; - int cache_size; - - struct ocm_region nc; /* non-cached region */ - struct ocm_region c; /* cached region */ -}; - -static struct ocm_info *ocm_nodes; -static int ocm_count; - -static struct ocm_info *ocm_get_node(unsigned int index) -{ - if (index >= ocm_count) { - printk(KERN_ERR "PPC4XX OCM: invalid index"); - return NULL; - } - - return &ocm_nodes[index]; -} - -static int ocm_free_region(struct ocm_region *ocm_reg, const void *addr) -{ - struct ocm_block *blk, *tmp; - unsigned long offset; - - if (!ocm_reg->virt) - return 0; - - list_for_each_entry_safe(blk, tmp, &ocm_reg->list, list) { - if (blk->addr == addr) { - offset = addr - ocm_reg->virt; - ocm_reg->memfree += blk->size; - rh_free(ocm_reg->rh, offset); - list_del(&blk->list); - kfree(blk); - return 1; - } - } - - return 0; -} - -static void __init ocm_init_node(int count, struct device_node *node) -{ - struct ocm_info *ocm; - - const unsigned int *cell_index; - const unsigned int *cache_size; - int len; - - struct resource rsrc; - - ocm = ocm_get_node(count); - - cell_index = of_get_property(node, "cell-index", &len); - if (!cell_index) { - printk(KERN_ERR "PPC4XX OCM: missing cell-index property"); - return; - } - ocm->index = *cell_index; - - if (of_device_is_available(node)) - ocm->status = OCM_ENABLED; - - cache_size = of_get_property(node, "cached-region-size", &len); - if (cache_size) - ocm->cache_size = *cache_size; - - if (of_address_to_resource(node, 0, &rsrc)) { - printk(KERN_ERR "PPC4XX OCM%d: could not get resource address\n", - ocm->index); - return; - } - - ocm->phys = rsrc.start; - ocm->memtotal = (rsrc.end - rsrc.start + 1); - - printk(KERN_INFO "PPC4XX OCM%d: %d Bytes (%s)\n", - ocm->index, ocm->memtotal, - (ocm->status == OCM_DISABLED) ? "disabled" : "enabled"); - - if (ocm->status == OCM_DISABLED) - return; - - /* request region */ - - if (!request_mem_region(ocm->phys, ocm->memtotal, "ppc4xx_ocm")) { - printk(KERN_ERR "PPC4XX OCM%d: could not request region\n", - ocm->index); - return; - } - - /* Configure non-cached and cached regions */ - - ocm->nc.phys = ocm->phys; - ocm->nc.memtotal = ocm->memtotal - ocm->cache_size; - ocm->nc.memfree = ocm->nc.memtotal; - - ocm->c.phys = ocm->phys + ocm->nc.memtotal; - ocm->c.memtotal = ocm->cache_size; - ocm->c.memfree = ocm->c.memtotal; - - if (ocm->nc.memtotal == 0) - ocm->nc.phys = 0; - - if (ocm->c.memtotal == 0) - ocm->c.phys = 0; - - printk(KERN_INFO "PPC4XX OCM%d: %d Bytes (non-cached)\n", - ocm->index, ocm->nc.memtotal); - - printk(KERN_INFO "PPC4XX OCM%d: %d Bytes (cached)\n", - ocm->index, ocm->c.memtotal); - - /* ioremap the non-cached region */ - if (ocm->nc.memtotal) { - ocm->nc.virt = __ioremap(ocm->nc.phys, ocm->nc.memtotal, - _PAGE_EXEC | pgprot_val(PAGE_KERNEL_NCG)); - - if (!ocm->nc.virt) { - printk(KERN_ERR - "PPC4XX OCM%d: failed to ioremap non-cached memory\n", - ocm->index); - ocm->nc.memfree = 0; - return; - } - } - - /* ioremap the cached region */ - - if (ocm->c.memtotal) { - ocm->c.virt = __ioremap(ocm->c.phys, ocm->c.memtotal, - _PAGE_EXEC | pgprot_val(PAGE_KERNEL)); - - if (!ocm->c.virt) { - printk(KERN_ERR - "PPC4XX OCM%d: failed to ioremap cached memory\n", - ocm->index); - ocm->c.memfree = 0; - return; - } - } - - /* Create Remote Heaps */ - - ocm->alignment = 4; /* default 4 byte alignment */ - - if (ocm->nc.virt) { - ocm->nc.rh = rh_create(ocm->alignment); - rh_attach_region(ocm->nc.rh, 0, ocm->nc.memtotal); - } - - if (ocm->c.virt) { - ocm->c.rh = rh_create(ocm->alignment); - rh_attach_region(ocm->c.rh, 0, ocm->c.memtotal); - } - - INIT_LIST_HEAD(&ocm->nc.list); - INIT_LIST_HEAD(&ocm->c.list); - - ocm->ready = 1; -} - -static int ocm_debugfs_show(struct seq_file *m, void *v) -{ - struct ocm_block *blk, *tmp; - unsigned int i; - - for (i = 0; i < ocm_count; i++) { - struct ocm_info *ocm = ocm_get_node(i); - - if (!ocm || !ocm->ready) - continue; - - seq_printf(m, "PPC4XX OCM : %d\n", ocm->index); - seq_printf(m, "PhysAddr : %pa\n", &(ocm->phys)); - seq_printf(m, "MemTotal : %d Bytes\n", ocm->memtotal); - seq_printf(m, "MemTotal(NC) : %d Bytes\n", ocm->nc.memtotal); - seq_printf(m, "MemTotal(C) : %d Bytes\n\n", ocm->c.memtotal); - - seq_printf(m, "NC.PhysAddr : %pa\n", &(ocm->nc.phys)); - seq_printf(m, "NC.VirtAddr : 0x%p\n", ocm->nc.virt); - seq_printf(m, "NC.MemTotal : %d Bytes\n", ocm->nc.memtotal); - seq_printf(m, "NC.MemFree : %d Bytes\n", ocm->nc.memfree); - - list_for_each_entry_safe(blk, tmp, &ocm->nc.list, list) { - seq_printf(m, "NC.MemUsed : %d Bytes (%s)\n", - blk->size, blk->owner); - } - - seq_printf(m, "\nC.PhysAddr : %pa\n", &(ocm->c.phys)); - seq_printf(m, "C.VirtAddr : 0x%p\n", ocm->c.virt); - seq_printf(m, "C.MemTotal : %d Bytes\n", ocm->c.memtotal); - seq_printf(m, "C.MemFree : %d Bytes\n", ocm->c.memfree); - - list_for_each_entry_safe(blk, tmp, &ocm->c.list, list) { - seq_printf(m, "C.MemUsed : %d Bytes (%s)\n", - blk->size, blk->owner); - } - - seq_putc(m, '\n'); - } - - return 0; -} - -static int ocm_debugfs_open(struct inode *inode, struct file *file) -{ - return single_open(file, ocm_debugfs_show, NULL); -} - -static const struct file_operations ocm_debugfs_fops = { - .open = ocm_debugfs_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -static int ocm_debugfs_init(void) -{ - struct dentry *junk; - - junk = debugfs_create_dir("ppc4xx_ocm", 0); - if (!junk) { - printk(KERN_ALERT "debugfs ppc4xx ocm: failed to create dir\n"); - return -1; - } - - if (debugfs_create_file("info", 0644, junk, NULL, &ocm_debugfs_fops)) { - printk(KERN_ALERT "debugfs ppc4xx ocm: failed to create file\n"); - return -1; - } - - return 0; -} - -void *ppc4xx_ocm_alloc(phys_addr_t *phys, int size, int align, - int flags, const char *owner) -{ - void __iomem *addr = NULL; - unsigned long offset; - struct ocm_info *ocm; - struct ocm_region *ocm_reg; - struct ocm_block *ocm_blk; - int i; - - for (i = 0; i < ocm_count; i++) { - ocm = ocm_get_node(i); - - if (!ocm || !ocm->ready) - continue; - - if (flags == PPC4XX_OCM_NON_CACHED) - ocm_reg = &ocm->nc; - else - ocm_reg = &ocm->c; - - if (!ocm_reg->virt) - continue; - - if (align < ocm->alignment) - align = ocm->alignment; - - offset = rh_alloc_align(ocm_reg->rh, size, align, NULL); - - if (IS_ERR_VALUE(offset)) - continue; - - ocm_blk = kzalloc(sizeof(*ocm_blk), GFP_KERNEL); - if (!ocm_blk) { - rh_free(ocm_reg->rh, offset); - break; - } - - *phys = ocm_reg->phys + offset; - addr = ocm_reg->virt + offset; - size = ALIGN(size, align); - - ocm_blk->addr = addr; - ocm_blk->size = size; - ocm_blk->owner = owner; - list_add_tail(&ocm_blk->list, &ocm_reg->list); - - ocm_reg->memfree -= size; - - break; - } - - return addr; -} - -void ppc4xx_ocm_free(const void *addr) -{ - int i; - - if (!addr) - return; - - for (i = 0; i < ocm_count; i++) { - struct ocm_info *ocm = ocm_get_node(i); - - if (!ocm || !ocm->ready) - continue; - - if (ocm_free_region(&ocm->nc, addr) || - ocm_free_region(&ocm->c, addr)) - return; - } -} - -static int __init ppc4xx_ocm_init(void) -{ - struct device_node *np; - int count; - - count = 0; - for_each_compatible_node(np, NULL, "ibm,ocm") - count++; - - if (!count) - return 0; - - ocm_nodes = kzalloc((count * sizeof(struct ocm_info)), GFP_KERNEL); - if (!ocm_nodes) - return -ENOMEM; - - ocm_count = count; - count = 0; - - for_each_compatible_node(np, NULL, "ibm,ocm") { - ocm_init_node(count, np); - count++; - } - - ocm_debugfs_init(); - - return 0; -} - -arch_initcall(ppc4xx_ocm_init); -- 2.13.3