From mboxrd@z Thu Jan 1 00:00:00 1970 From: Doug Berger Subject: [PATCH v2 6/8] bus: brcmstb_gisb: Add ARM64 support Date: Tue, 28 Mar 2017 14:34:29 -0700 Message-ID: <20170328213431.10904-7-opendmb@gmail.com> References: <20170328213431.10904-1-opendmb@gmail.com> Return-path: In-Reply-To: <20170328213431.10904-1-opendmb@gmail.com> Sender: linux-kernel-owner@vger.kernel.org To: mark.rutland@arm.com Cc: robh+dt@kernel.org, catalin.marinas@arm.com, will.deacon@arm.com, computersforpeace@gmail.com, gregory.0xf0@gmail.com, f.fainelli@gmail.com, bcm-kernel-feedback-list@broadcom.com, opendmb@gmail.com, wangkefeng.wang@huawei.com, james.morse@arm.com, mingo@kernel.org, sandeepa.s.prabhu@gmail.com, shijie.huang@arm.com, linus.walleij@linaro.org, treding@nvidia.com, jonathanh@nvidia.com, olof@lixom.net, mirza.krak@gmail.com, suzuki.poulose@arm.com, bgolaszewski@baylibre.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org List-Id: devicetree@vger.kernel.org From: Florian Fainelli Hook to the ARM64 data abort exception #16: synchronous external abort, which is how the GISB errors will be funneled back to the ARM64 CPU in case of problems Signed-off-by: Florian Fainelli --- drivers/bus/Kconfig | 2 +- drivers/bus/brcmstb_gisb.c | 15 ++++++++++++--- 2 files changed, 13 insertions(+), 4 deletions(-) diff --git a/drivers/bus/Kconfig b/drivers/bus/Kconfig index 0a52da439abf..d2a5f1184022 100644 --- a/drivers/bus/Kconfig +++ b/drivers/bus/Kconfig @@ -57,7 +57,7 @@ config ARM_CCN config BRCMSTB_GISB_ARB bool "Broadcom STB GISB bus arbiter" - depends on ARM || MIPS + depends on ARM || ARM64 || MIPS default ARCH_BRCMSTB || BMIPS_GENERIC help Driver for the Broadcom Set Top Box System-on-a-chip internal bus diff --git a/drivers/bus/brcmstb_gisb.c b/drivers/bus/brcmstb_gisb.c index edf79432f899..500b6bb5c739 100644 --- a/drivers/bus/brcmstb_gisb.c +++ b/drivers/bus/brcmstb_gisb.c @@ -30,6 +30,11 @@ #include #endif +#ifdef CONFIG_ARM64 +#include +#include +#endif + #ifdef CONFIG_MIPS #include #endif @@ -225,7 +230,7 @@ static int brcmstb_gisb_arb_decode_addr(struct brcmstb_gisb_arb_device *gdev, return 0; } -#ifdef CONFIG_ARM +#if defined(CONFIG_ARM) || defined(CONFIG_ARM64) static int brcmstb_bus_error_handler(unsigned long addr, unsigned int fsr, struct pt_regs *regs) { @@ -235,7 +240,7 @@ static int brcmstb_bus_error_handler(unsigned long addr, unsigned int fsr, list_for_each_entry(gdev, &brcmstb_gisb_arb_device_list, next) brcmstb_gisb_arb_decode_addr(gdev, "bus error"); -#if !defined(CONFIG_ARM_LPAE) +#if defined(CONFIG_ARM) && !defined(CONFIG_ARM_LPAE) /* * If it was an imprecise abort, then we need to correct the * return address to be _after_ the instruction. @@ -247,7 +252,7 @@ static int brcmstb_bus_error_handler(unsigned long addr, unsigned int fsr, /* Always report unhandled exception */ return 1; } -#endif +#endif /* CONFIG_ARM || CONFIG_ARM64 */ #ifdef CONFIG_MIPS static int brcmstb_bus_error_handler(struct pt_regs *regs, int is_fixup) @@ -395,6 +400,10 @@ static int __init brcmstb_gisb_arb_probe(struct platform_device *pdev) "imprecise external abort"); #endif #endif /* CONFIG_ARM */ +#ifdef CONFIG_ARM64 + hook_fault_code(16, brcmstb_bus_error_handler, SIGBUS, 0, + "synchronous external abort"); +#endif #ifdef CONFIG_MIPS board_be_handler = brcmstb_bus_error_handler; #endif -- 2.12.0