From: Álvaro Fernández Rojas Date: Fri, 20 May 2022 11:09:26 +0000 (+0200) Subject: bmips: rework ARCH_HAS_SYNC_DMA_FOR_CPU_ALL patch X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=9b4169df2d26ddcb8cea41de47c159d421389130;p=openwrt%2Fstaging%2Fxback.git bmips: rework ARCH_HAS_SYNC_DMA_FOR_CPU_ALL patch Let's disable ARCH_HAS_SYNC_DMA_FOR_CPU_ALL only for BCM6358. Signed-off-by: Álvaro Fernández Rojas --- diff --git a/target/linux/bmips/patches-5.15/202-mips-bmips-BCM6358-disable-ARCH_HAS_SYNC_DMA_FOR_CPU_ALL.patch b/target/linux/bmips/patches-5.15/202-mips-bmips-BCM6358-disable-ARCH_HAS_SYNC_DMA_FOR_CPU_ALL.patch new file mode 100644 index 0000000000..0ed2353a50 --- /dev/null +++ b/target/linux/bmips/patches-5.15/202-mips-bmips-BCM6358-disable-ARCH_HAS_SYNC_DMA_FOR_CPU_ALL.patch @@ -0,0 +1,94 @@ +From 84c06b4a1dfa3e021fdbcafaff8cebfdec462402 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= +Date: Tue, 23 Feb 2021 10:39:48 +0100 +Subject: [PATCH] mips: bmips: BCM6358: disable ARCH_HAS_SYNC_DMA_FOR_CPU_ALL +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Enabling this option causes kernel panics on BCM6358 with EHCI/OHCI: +[ 3.881739] usb 1-1: new high-speed USB device number 2 using ehci-platform +[ 3.895011] Reserved instruction in kernel code[#1]: +[ 3.900113] CPU: 0 PID: 1 Comm: init Not tainted 5.10.16 #0 +[ 3.905829] $ 0 : 00000000 10008700 00000000 77d94060 +[ 3.911238] $ 4 : 7fd1f088 00000000 81431cac 81431ca0 +[ 3.916641] $ 8 : 00000000 ffffefff 8075cd34 00000000 +[ 3.922043] $12 : 806f8d40 f3e812b7 00000000 000d9aaa +[ 3.927446] $16 : 7fd1f068 7fd1f080 7ff559b8 81428470 +[ 3.932848] $20 : 00000000 00000000 55590000 77d70000 +[ 3.938251] $24 : 00000018 00000010 +[ 3.943655] $28 : 81430000 81431e60 81431f28 800157fc +[ 3.949058] Hi : 00000000 +[ 3.952013] Lo : 00000000 +[ 3.955019] epc : 80015808 setup_sigcontext+0x54/0x24c +[ 3.960464] ra : 800157fc setup_sigcontext+0x48/0x24c +[ 3.965913] Status: 10008703 KERNEL EXL IE +[ 3.970216] Cause : 00800028 (ExcCode 0a) +[ 3.974340] PrId : 0002a010 (Broadcom BMIPS4350) +[ 3.979170] Modules linked in: ohci_platform ohci_hcd fsl_mph_dr_of ehci_platform ehci_fsl ehci_hcd gpio_button_hotplug usbcore nls_base usb_common +[ 3.992907] Process init (pid: 1, threadinfo=(ptrval), task=(ptrval), tls=77e22ec8) +[ 4.000776] Stack : 81431ef4 7fd1f080 81431f28 81428470 7fd1f068 81431edc 7ff559b8 81428470 +[ 4.009467] 81431f28 7fd1f080 55590000 77d70000 77d5498c 80015c70 806f0000 8063ae74 +[ 4.018149] 08100002 81431f28 0000000a 08100002 81431f28 0000000a 77d6b418 00000003 +[ 4.026831] ffffffff 80016414 80080734 81431ecc 81431ecc 00000001 00000000 04000000 +[ 4.035512] 77d54874 00000000 00000000 00000000 00000000 00000012 00000002 00000000 +[ 4.044196] ... +[ 4.046706] Call Trace: +[ 4.049238] [<80015808>] setup_sigcontext+0x54/0x24c +[ 4.054356] [<80015c70>] setup_frame+0xdc/0x124 +[ 4.059015] [<80016414>] do_notify_resume+0x1dc/0x288 +[ 4.064207] [<80011b50>] work_notifysig+0x10/0x18 +[ 4.069036] +[ 4.070538] Code: 8fc300b4 00001025 26240008 ac830004 3c048063 0c0228aa 24846a00 26240010 +[ 4.080686] +[ 4.082517] ---[ end trace 22a8edb41f5f983b ]--- +[ 4.087374] Kernel panic - not syncing: Fatal exception +[ 4.092753] Rebooting in 1 seconds.. + +Signed-off-by: Álvaro Fernández Rojas +--- + arch/mips/bmips/dma.c + arch/mips/bmips/setup.c + +--- a/arch/mips/bmips/dma.c ++++ b/arch/mips/bmips/dma.c +@@ -19,6 +19,8 @@ + #include + #include + ++int bmips_dma_sync_enabled = 1; ++ + /* + * BCM338x has configurable address translation windows which allow the + * peripherals' DMA addresses to be different from the Zephyr-visible +@@ -69,6 +71,9 @@ void arch_sync_dma_for_cpu_all(void) + void __iomem *cbr = BMIPS_GET_CBR(); + u32 cfg; + ++ if (!bmips_dma_sync_enabled) ++ return; ++ + if (boot_cpu_type() != CPU_BMIPS3300 && + boot_cpu_type() != CPU_BMIPS4350 && + boot_cpu_type() != CPU_BMIPS4380) +--- a/arch/mips/bmips/setup.c ++++ b/arch/mips/bmips/setup.c +@@ -89,6 +89,8 @@ + + #define DDR_CSEND_REG 0x8 + ++extern int bmips_dma_sync_enabled; ++ + static const unsigned long kbase = VMLINUX_LOAD_ADDRESS & 0xfff00000; + + struct bmips_cpufreq { +@@ -168,6 +170,9 @@ static void bcm6358_quirks(void) + * disable SMP for now + */ + bmips_smp_enabled = 0; ++ ++ /* ARCH_HAS_SYNC_DMA_FOR_CPU_ALL causes kernel panics on BCM6358 */ ++ bmips_dma_sync_enabled = 0; + } + + static void bcm6368_quirks(void) diff --git a/target/linux/bmips/patches-5.15/202-mips-bmips-disable-ARCH_HAS_SYNC_DMA_FOR_CPU_ALL.patch b/target/linux/bmips/patches-5.15/202-mips-bmips-disable-ARCH_HAS_SYNC_DMA_FOR_CPU_ALL.patch deleted file mode 100644 index af232e8758..0000000000 --- a/target/linux/bmips/patches-5.15/202-mips-bmips-disable-ARCH_HAS_SYNC_DMA_FOR_CPU_ALL.patch +++ /dev/null @@ -1,80 +0,0 @@ -From 84c06b4a1dfa3e021fdbcafaff8cebfdec462402 Mon Sep 17 00:00:00 2001 -From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= -Date: Tue, 23 Feb 2021 10:39:48 +0100 -Subject: [PATCH] mips: bmips: disable ARCH_HAS_SYNC_DMA_FOR_CPU_ALL -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -Enabling this option causes kernel panics on BCM6358 with EHCI/OHCI: -[ 3.881739] usb 1-1: new high-speed USB device number 2 using ehci-platform -[ 3.895011] Reserved instruction in kernel code[#1]: -[ 3.900113] CPU: 0 PID: 1 Comm: init Not tainted 5.10.16 #0 -[ 3.905829] $ 0 : 00000000 10008700 00000000 77d94060 -[ 3.911238] $ 4 : 7fd1f088 00000000 81431cac 81431ca0 -[ 3.916641] $ 8 : 00000000 ffffefff 8075cd34 00000000 -[ 3.922043] $12 : 806f8d40 f3e812b7 00000000 000d9aaa -[ 3.927446] $16 : 7fd1f068 7fd1f080 7ff559b8 81428470 -[ 3.932848] $20 : 00000000 00000000 55590000 77d70000 -[ 3.938251] $24 : 00000018 00000010 -[ 3.943655] $28 : 81430000 81431e60 81431f28 800157fc -[ 3.949058] Hi : 00000000 -[ 3.952013] Lo : 00000000 -[ 3.955019] epc : 80015808 setup_sigcontext+0x54/0x24c -[ 3.960464] ra : 800157fc setup_sigcontext+0x48/0x24c -[ 3.965913] Status: 10008703 KERNEL EXL IE -[ 3.970216] Cause : 00800028 (ExcCode 0a) -[ 3.974340] PrId : 0002a010 (Broadcom BMIPS4350) -[ 3.979170] Modules linked in: ohci_platform ohci_hcd fsl_mph_dr_of ehci_platform ehci_fsl ehci_hcd gpio_button_hotplug usbcore nls_base usb_common -[ 3.992907] Process init (pid: 1, threadinfo=(ptrval), task=(ptrval), tls=77e22ec8) -[ 4.000776] Stack : 81431ef4 7fd1f080 81431f28 81428470 7fd1f068 81431edc 7ff559b8 81428470 -[ 4.009467] 81431f28 7fd1f080 55590000 77d70000 77d5498c 80015c70 806f0000 8063ae74 -[ 4.018149] 08100002 81431f28 0000000a 08100002 81431f28 0000000a 77d6b418 00000003 -[ 4.026831] ffffffff 80016414 80080734 81431ecc 81431ecc 00000001 00000000 04000000 -[ 4.035512] 77d54874 00000000 00000000 00000000 00000000 00000012 00000002 00000000 -[ 4.044196] ... -[ 4.046706] Call Trace: -[ 4.049238] [<80015808>] setup_sigcontext+0x54/0x24c -[ 4.054356] [<80015c70>] setup_frame+0xdc/0x124 -[ 4.059015] [<80016414>] do_notify_resume+0x1dc/0x288 -[ 4.064207] [<80011b50>] work_notifysig+0x10/0x18 -[ 4.069036] -[ 4.070538] Code: 8fc300b4 00001025 26240008 ac830004 3c048063 0c0228aa 24846a00 26240010 -[ 4.080686] -[ 4.082517] ---[ end trace 22a8edb41f5f983b ]--- -[ 4.087374] Kernel panic - not syncing: Fatal exception -[ 4.092753] Rebooting in 1 seconds.. - -Signed-off-by: Álvaro Fernández Rojas ---- - arch/mips/Kconfig | 1 - - 1 file changed, 1 deletion(-) - ---- a/arch/mips/Kconfig -+++ b/arch/mips/Kconfig -@@ -264,7 +264,6 @@ config ATH79 - config BMIPS_GENERIC - bool "Broadcom Generic BMIPS kernel" - select ARCH_HAS_RESET_CONTROLLER -- select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL - select ARCH_HAS_PHYS_TO_DMA - select BOOT_RAW - select NO_EXCEPT_FILL ---- a/arch/mips/bmips/dma.c -+++ b/arch/mips/bmips/dma.c -@@ -64,6 +64,7 @@ phys_addr_t dma_to_phys(struct device *d - return dma_addr; - } - -+#ifdef CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU_ALL - void arch_sync_dma_for_cpu_all(void) - { - void __iomem *cbr = BMIPS_GET_CBR(); -@@ -79,6 +80,7 @@ void arch_sync_dma_for_cpu_all(void) - __raw_writel(cfg | 0x100, cbr + BMIPS_RAC_CONFIG); - __raw_readl(cbr + BMIPS_RAC_CONFIG); - } -+#endif /* CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU_ALL */ - - static int __init bmips_init_dma_ranges(void) - {