From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751652AbcAQL16 (ORCPT ); Sun, 17 Jan 2016 06:27:58 -0500 Received: from mail-wm0-f67.google.com ([74.125.82.67]:32997 "EHLO mail-wm0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750885AbcAQL1y (ORCPT ); Sun, 17 Jan 2016 06:27:54 -0500 From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= To: linux-mips@linux-mips.org, ralf@linux-mips.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, f.fainelli@gmail.com, jogo@openwrt.org, cernekee@gmail.com Cc: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= Subject: [PATCH 1/2] bmips: add BCM6358 support Date: Sun, 17 Jan 2016 12:28:20 +0100 Message-Id: <1453030101-14794-1-git-send-email-noltari@gmail.com> X-Mailer: git-send-email 1.9.1 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org BCM6358 has a shared TLB which conflicts with current SMP support, so it must be disabled for now. BCM6358 uses >= 0xfff00000 addresses for internal registers, which need to be remapped (by using a simplified version of BRCM63xx ioremap.h). Signed-off-by: Álvaro Fernández Rojas --- arch/mips/bmips/setup.c | 10 +++++++++ arch/mips/include/asm/mach-bmips/ioremap.h | 33 ++++++++++++++++++++++++++++++ 2 files changed, 43 insertions(+) create mode 100644 arch/mips/include/asm/mach-bmips/ioremap.h diff --git a/arch/mips/bmips/setup.c b/arch/mips/bmips/setup.c index 3553528..38b5bd5 100644 --- a/arch/mips/bmips/setup.c +++ b/arch/mips/bmips/setup.c @@ -95,6 +95,15 @@ static void bcm6328_quirks(void) bcm63xx_fixup_cpu1(); } +static void bcm6358_quirks(void) +{ + /* + * BCM6358 needs special handling for its shared TLB, so + * disable SMP for now + */ + bmips_smp_enabled = 0; +} + static void bcm6368_quirks(void) { bcm63xx_fixup_cpu1(); @@ -104,6 +113,7 @@ static const struct bmips_quirk bmips_quirk_list[] = { { "brcm,bcm3384-viper", &bcm3384_viper_quirks }, { "brcm,bcm33843-viper", &bcm3384_viper_quirks }, { "brcm,bcm6328", &bcm6328_quirks }, + { "brcm,bcm6358", &bcm6358_quirks }, { "brcm,bcm6368", &bcm6368_quirks }, { "brcm,bcm63168", &bcm6368_quirks }, { }, diff --git a/arch/mips/include/asm/mach-bmips/ioremap.h b/arch/mips/include/asm/mach-bmips/ioremap.h new file mode 100644 index 0000000..b1a75f8 --- /dev/null +++ b/arch/mips/include/asm/mach-bmips/ioremap.h @@ -0,0 +1,33 @@ +#ifndef __ASM_MACH_BMIPS_IOREMAP_H +#define __ASM_MACH_BMIPS_IOREMAP_H + +#include + +static inline phys_addr_t fixup_bigphys_addr(phys_addr_t phys_addr, phys_addr_t size) +{ + return phys_addr; +} + +static inline int is_bmips_internal_registers(phys_addr_t offset) +{ + if (offset >= 0xfff00000) + return 1; + + return 0; +} + +static inline void __iomem *plat_ioremap(phys_addr_t offset, unsigned long size, + unsigned long flags) +{ + if (is_bmips_internal_registers(offset)) + return (void __iomem *)offset; + + return NULL; +} + +static inline int plat_iounmap(const volatile void __iomem *addr) +{ + return is_bmips_internal_registers((unsigned long)addr); +} + +#endif /* __ASM_MACH_BMIPS_IOREMAP_H */ -- 1.9.1