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[PATCH openEuler-23.09] gpio: loongson: Add 3A/3B/3C/7A gpio dirver support
by Ming Wang 25 Sep '23

25 Sep '23

LoongArch inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I6BWFP -------------------------------- Signed-off-by: Juxin Gao <gaojuxin(a)loongson.cn> Signed-off-by: Ming Wang <wangming01(a)loongson.cn> --- drivers/gpio/Kconfig | 3 +- drivers/gpio/gpio-loongson.c | 414 ++++++++++++++++++++++++++++------- 2 files changed, 341 insertions(+), 76 deletions(-) diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index f45c6a36551c..be0cf9c87cd6 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -377,7 +377,8 @@ config GPIO_LOGICVC config GPIO_LOONGSON bool "Loongson-2/3 GPIO support" - depends on CPU_LOONGSON2EF || CPU_LOONGSON64 + depends on CPU_LOONGSON2EF || CPU_LOONGSON64 || LOONGARCH + default m help Driver for GPIO functionality on Loongson-2F/3A/3B processors. diff --git a/drivers/gpio/gpio-loongson.c b/drivers/gpio/gpio-loongson.c index a42145873cc9..a3a3d647a043 100644 --- a/drivers/gpio/gpio-loongson.c +++ b/drivers/gpio/gpio-loongson.c @@ -1,13 +1,13 @@ -// SPDX-License-Identifier: GPL-2.0-or-later /* - * Loongson-2F/3A/3B GPIO Support + * Loongson-3A/3B/3C/7A GPIO Support * - * Copyright (c) 2008 Richard Liu, STMicroelectronics <richard.liu(a)st.com> - * Copyright (c) 2008-2010 Arnaud Patard <apatard(a)mandriva.com> - * Copyright (c) 2013 Hongbing Hu <huhb(a)lemote.com> - * Copyright (c) 2014 Huacai Chen <chenhc(a)lemote.com> + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. */ +#include <linux/acpi.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/module.h> @@ -16,120 +16,384 @@ #include <linux/gpio/driver.h> #include <linux/platform_device.h> #include <linux/bitops.h> +#include <linux/property.h> #include <asm/types.h> -#include <loongson.h> -#define STLS2F_N_GPIO 4 -#define STLS3A_N_GPIO 16 +/* ============== Data structrues =============== */ -#ifdef CONFIG_CPU_LOONGSON64 -#define LOONGSON_N_GPIO STLS3A_N_GPIO -#else -#define LOONGSON_N_GPIO STLS2F_N_GPIO -#endif +/* gpio data */ +struct platform_gpio_data { + u32 gpio_conf; + u32 gpio_out; + u32 gpio_in; + u32 in_start_bit; + u32 support_irq; + char *label; + int gpio_base; + int ngpio; +}; + +#define GPIO_IO_CONF(x) (x->base + x->conf_offset) +#define GPIO_OUT(x) (x->base + x->out_offset) +#define GPIO_IN(x) (x->base + x->in_offset) + +#define LS7A_GPIO_OEN_BYTE(x, gpio) (x->base + x->conf_offset + gpio) +#define LS7A_GPIO_OUT_BYTE(x, gpio) (x->base + x->out_offset + gpio) +#define LS7A_GPIO_IN_BYTE(x, gpio) (x->base + x->in_offset + gpio) + +struct loongson_gpio_chip { + struct gpio_chip chip; + spinlock_t lock; + void __iomem *base; + int conf_offset; + int out_offset; + int in_offset; + int in_start_bit; + u16 *gsi_idx_map; + u16 mapsize; + bool support_irq; +}; /* - * Offset into the register where we read lines, we write them from offset 0. - * This offset is the only thing that stand between us and using - * GPIO_GENERIC. + * GPIO primitives. */ -#define LOONGSON_GPIO_IN_OFFSET 16 +static int loongson_gpio_request(struct gpio_chip *chip, unsigned int pin) +{ + if (pin >= chip->ngpio) + return -EINVAL; + else + return 0; +} + +static inline void +__set_direction(struct loongson_gpio_chip *lgpio, unsigned int pin, int input) +{ + u64 temp; + u8 value; -static DEFINE_SPINLOCK(gpio_lock); + if (!strcmp(lgpio->chip.label, "loongson,loongson3-gpio") || + !strncmp(lgpio->chip.label, "LOON0007", 8)) { + temp = readq(GPIO_IO_CONF(lgpio)); + if (input) + temp |= 1ULL << pin; + else + temp &= ~(1ULL << pin); + writeq(temp, GPIO_IO_CONF(lgpio)); + return; + } + if (!strcmp(lgpio->chip.label, "loongson,ls7a-gpio") || + !strncmp(lgpio->chip.label, "LOON0002", 8)) { + if (input) + value = 1; + else + value = 0; + writeb(value, LS7A_GPIO_OEN_BYTE(lgpio, pin)); + return; + } +} -static int loongson_gpio_get_value(struct gpio_chip *chip, unsigned gpio) +static void __set_level(struct loongson_gpio_chip *lgpio, unsigned int pin, int high) { - u32 val; + u64 temp; + u8 value; - spin_lock(&gpio_lock); - val = LOONGSON_GPIODATA; - spin_unlock(&gpio_lock); + /* If GPIO controller is on 3A,then... */ + if (!strcmp(lgpio->chip.label, "loongson,loongson3-gpio") || + !strncmp(lgpio->chip.label, "LOON0007", 8)) { + temp = readq(GPIO_OUT(lgpio)); + if (high) + temp |= 1ULL << pin; + else + temp &= ~(1ULL << pin); + writeq(temp, GPIO_OUT(lgpio)); + return; + } - return !!(val & BIT(gpio + LOONGSON_GPIO_IN_OFFSET)); + if (!strcmp(lgpio->chip.label, "loongson,ls7a-gpio") || + !strncmp(lgpio->chip.label, "LOON0002", 8)) { + if (high) + value = 1; + else + value = 0; + writeb(value, LS7A_GPIO_OUT_BYTE(lgpio, pin)); + return; + } } -static void loongson_gpio_set_value(struct gpio_chip *chip, - unsigned gpio, int value) +static int loongson_gpio_direction_input(struct gpio_chip *chip, unsigned int pin) { - u32 val; + unsigned long flags; + struct loongson_gpio_chip *lgpio = + container_of(chip, struct loongson_gpio_chip, chip); - spin_lock(&gpio_lock); - val = LOONGSON_GPIODATA; - if (value) - val |= BIT(gpio); - else - val &= ~BIT(gpio); - LOONGSON_GPIODATA = val; - spin_unlock(&gpio_lock); + spin_lock_irqsave(&lgpio->lock, flags); + __set_direction(lgpio, pin, 1); + spin_unlock_irqrestore(&lgpio->lock, flags); + + return 0; } -static int loongson_gpio_direction_input(struct gpio_chip *chip, unsigned gpio) +static int loongson_gpio_direction_output(struct gpio_chip *chip, + unsigned int pin, int value) { - u32 temp; + struct loongson_gpio_chip *lgpio = + container_of(chip, struct loongson_gpio_chip, chip); + unsigned long flags; - spin_lock(&gpio_lock); - temp = LOONGSON_GPIOIE; - temp |= BIT(gpio); - LOONGSON_GPIOIE = temp; - spin_unlock(&gpio_lock); + spin_lock_irqsave(&lgpio->lock, flags); + __set_level(lgpio, pin, value); + __set_direction(lgpio, pin, 0); + spin_unlock_irqrestore(&lgpio->lock, flags); return 0; } -static int loongson_gpio_direction_output(struct gpio_chip *chip, - unsigned gpio, int level) +static int loongson_gpio_get(struct gpio_chip *chip, unsigned int pin) { - u32 temp; + struct loongson_gpio_chip *lgpio = + container_of(chip, struct loongson_gpio_chip, chip); + u64 temp; + u8 value; + + /* GPIO controller in 3A is different for 7A */ + if (!strcmp(lgpio->chip.label, "loongson,loongson3-gpio") || + !strncmp(lgpio->chip.label, "LOON0007", 8)) { + temp = readq(GPIO_IN(lgpio)); + return ((temp & (1ULL << (pin + lgpio->in_start_bit))) != 0); + } + + if (!strcmp(lgpio->chip.label, "loongson,ls7a-gpio") || + !strncmp(lgpio->chip.label, "LOON0002", 8)) { + value = readb(LS7A_GPIO_IN_BYTE(lgpio, pin)); + return (value & 1); + } + + return -ENXIO; +} + +static void loongson_gpio_set(struct gpio_chip *chip, unsigned int pin, int value) +{ + struct loongson_gpio_chip *lgpio = + container_of(chip, struct loongson_gpio_chip, chip); + unsigned long flags; + + spin_lock_irqsave(&lgpio->lock, flags); + __set_level(lgpio, pin, value); + spin_unlock_irqrestore(&lgpio->lock, flags); +} + +static int loongson_gpio_to_irq(struct gpio_chip *chip, unsigned int offset) +{ + struct platform_device *pdev = + container_of(chip->parent, struct platform_device, dev); + struct loongson_gpio_chip *lgpio = + container_of(chip, struct loongson_gpio_chip, chip); + + if (offset >= chip->ngpio) + return -EINVAL; + + if ((lgpio->gsi_idx_map != NULL) && (offset < lgpio->mapsize)) + offset = lgpio->gsi_idx_map[offset]; + + return platform_get_irq(pdev, offset); +} + +static int loongson_gpio_init(struct device *dev, struct loongson_gpio_chip *lgpio, + struct device_node *np, + void __iomem *base) +{ + lgpio->chip.request = loongson_gpio_request; + lgpio->chip.direction_input = loongson_gpio_direction_input; + lgpio->chip.get = loongson_gpio_get; + lgpio->chip.direction_output = loongson_gpio_direction_output; + lgpio->chip.set = loongson_gpio_set; + lgpio->chip.can_sleep = 0; + lgpio->chip.fwnode = dev_fwnode(dev); + lgpio->chip.parent = dev; + spin_lock_init(&lgpio->lock); + lgpio->base = (void __iomem *)base; + + if (!strcmp(lgpio->chip.label, "loongson,ls7a-gpio") || + !strncmp(lgpio->chip.label, "LOON0002", 8) || + !strcmp(lgpio->chip.label, "loongson,loongson3-gpio") || + !strncmp(lgpio->chip.label, "LOON0007", 8)) { - loongson_gpio_set_value(chip, gpio, level); - spin_lock(&gpio_lock); - temp = LOONGSON_GPIOIE; - temp &= ~BIT(gpio); - LOONGSON_GPIOIE = temp; - spin_unlock(&gpio_lock); + lgpio->chip.to_irq = loongson_gpio_to_irq; + } + gpiochip_add(&lgpio->chip); return 0; } + +static void of_loongson_gpio_get_props(struct device_node *np, + struct loongson_gpio_chip *lgpio) +{ + const char *name; + + of_property_read_u32(np, "ngpios", (u32 *)&lgpio->chip.ngpio); + of_property_read_u32(np, "gpio_base", (u32 *)&lgpio->chip.base); + of_property_read_u32(np, "conf_offset", (u32 *)&lgpio->conf_offset); + of_property_read_u32(np, "out_offset", (u32 *)&lgpio->out_offset); + of_property_read_u32(np, "in_offset", (u32 *)&lgpio->in_offset); + of_property_read_string(np, "compatible", &name); + if (!strcmp(name, "loongson,loongson3-gpio")) { + of_property_read_u32(np, "in_start_bit", + (u32 *)&lgpio->in_start_bit); + if (of_property_read_bool(np, "support_irq")) + lgpio->support_irq = true; + } + lgpio->chip.label = kstrdup(name, GFP_KERNEL); +} + +static void acpi_loongson_gpio_get_props(struct platform_device *pdev, + struct loongson_gpio_chip *lgpio) +{ + + struct device *dev = &pdev->dev; + int rval; + + device_property_read_u32(dev, "ngpios", (u32 *)&lgpio->chip.ngpio); + device_property_read_u32(dev, "gpio_base", (u32 *)&lgpio->chip.base); + device_property_read_u32(dev, "conf_offset", (u32 *)&lgpio->conf_offset); + device_property_read_u32(dev, "out_offset", (u32 *)&lgpio->out_offset); + device_property_read_u32(dev, "in_offset", (u32 *)&lgpio->in_offset); + rval = device_property_read_u16_array(dev, "gsi_idx_map", NULL, 0); + if (rval > 0) { + lgpio->gsi_idx_map = + kmalloc_array(rval, sizeof(*lgpio->gsi_idx_map), + GFP_KERNEL); + if (unlikely(!lgpio->gsi_idx_map)) { + dev_err(dev, "Alloc gsi_idx_map fail!\n"); + } else { + lgpio->mapsize = rval; + device_property_read_u16_array(dev, "gsi_idx_map", + lgpio->gsi_idx_map, lgpio->mapsize); + } + } + if (!strcmp(pdev->name, "LOON0007")) { + device_property_read_u32(dev, "in_start_bit", + (u32 *)&lgpio->in_start_bit); + if (device_property_read_bool(dev, "support_irq")) + lgpio->support_irq = true; + } + lgpio->chip.label = kstrdup(pdev->name, GFP_KERNEL); +} + +static void platform_loongson_gpio_get_props(struct platform_device *pdev, + struct loongson_gpio_chip *lgpio) +{ + struct platform_gpio_data *gpio_data = + (struct platform_gpio_data *)pdev->dev.platform_data; + + lgpio->chip.ngpio = gpio_data->ngpio; + lgpio->chip.base = gpio_data->gpio_base; + lgpio->conf_offset = gpio_data->gpio_conf; + lgpio->out_offset = gpio_data->gpio_out; + lgpio->in_offset = gpio_data->gpio_in; + if (!strcmp(gpio_data->label, "loongson,loongson3-gpio")) { + lgpio->in_start_bit = gpio_data->in_start_bit; + lgpio->support_irq = gpio_data->support_irq; + } + lgpio->chip.label = kstrdup(gpio_data->label, GFP_KERNEL); +} + static int loongson_gpio_probe(struct platform_device *pdev) { - struct gpio_chip *gc; + struct resource *iores; + void __iomem *base; + struct loongson_gpio_chip *lgpio; + struct device_node *np = pdev->dev.of_node; struct device *dev = &pdev->dev; + int ret = 0; - gc = devm_kzalloc(dev, sizeof(*gc), GFP_KERNEL); - if (!gc) + lgpio = kzalloc(sizeof(struct loongson_gpio_chip), GFP_KERNEL); + if (!lgpio) return -ENOMEM; - gc->label = "loongson-gpio-chip"; - gc->base = 0; - gc->ngpio = LOONGSON_N_GPIO; - gc->get = loongson_gpio_get_value; - gc->set = loongson_gpio_set_value; - gc->direction_input = loongson_gpio_direction_input; - gc->direction_output = loongson_gpio_direction_output; + if (np) + of_loongson_gpio_get_props(np, lgpio); + else if (ACPI_COMPANION(&pdev->dev)) + acpi_loongson_gpio_get_props(pdev, lgpio); + else + platform_loongson_gpio_get_props(pdev, lgpio); + + iores = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!iores) { + ret = -ENODEV; + goto out; + } + if (!request_mem_region(iores->start, resource_size(iores), + pdev->name)) { + ret = -EBUSY; + goto out; + } + base = ioremap(iores->start, resource_size(iores)); + if (!base) { + ret = -ENOMEM; + goto out; + } + platform_set_drvdata(pdev, lgpio); + loongson_gpio_init(dev, lgpio, np, base); - return gpiochip_add_data(gc, NULL); + return 0; +out: + pr_err("%s: %s: missing mandatory property\n", __func__, np->name); + return ret; } -static struct platform_driver loongson_gpio_driver = { +static int loongson_gpio_remove(struct platform_device *pdev) +{ + struct loongson_gpio_chip *lgpio = platform_get_drvdata(pdev); + struct resource *mem; + + platform_set_drvdata(pdev, NULL); + gpiochip_remove(&lgpio->chip); + iounmap(lgpio->base); + kfree(lgpio->gsi_idx_map); + kfree(lgpio); + mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + release_mem_region(mem->start, resource_size(mem)); + return 0; +} + +static const struct of_device_id loongson_gpio_dt_ids[] = { + { .compatible = "loongson,loongson3-gpio"}, + { .compatible = "loongson,ls7a-gpio"}, + {} +}; +MODULE_DEVICE_TABLE(of, loongson_gpio_dt_ids); + +static const struct acpi_device_id loongson_gpio_acpi_match[] = { + {"LOON0002"}, + {"LOON0007"}, + {} +}; +MODULE_DEVICE_TABLE(acpi, loongson_gpio_acpi_match); + +static struct platform_driver ls_gpio_driver = { .driver = { .name = "loongson-gpio", + .owner = THIS_MODULE, + .of_match_table = loongson_gpio_dt_ids, + .acpi_match_table = ACPI_PTR(loongson_gpio_acpi_match), }, .probe = loongson_gpio_probe, + .remove = loongson_gpio_remove, }; static int __init loongson_gpio_setup(void) { - struct platform_device *pdev; - int ret; - - ret = platform_driver_register(&loongson_gpio_driver); - if (ret) { - pr_err("error registering loongson GPIO driver\n"); - return ret; - } + return platform_driver_register(&ls_gpio_driver); +} +subsys_initcall(loongson_gpio_setup); - pdev = platform_device_register_simple("loongson-gpio", -1, NULL, 0); - return PTR_ERR_OR_ZERO(pdev); +static void __exit loongson_gpio_driver(void) +{ + platform_driver_unregister(&ls_gpio_driver); } -postcore_initcall(loongson_gpio_setup); +module_exit(loongson_gpio_driver); +MODULE_AUTHOR("Loongson Technology Corporation Limited"); +MODULE_DESCRIPTION("LOONGSON GPIO"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:loongson_gpio"); -- 2.39.2

2 1

[PATCH OLK-5.10] scsi: lpfc: Fix ioremap issues in lpfc_sli4_pci_mem_setup()
by Yong Hu 25 Sep '23

25 Sep '23

From: Shuchang Li <lishuchang(a)hust.edu.cn> stable inclusion from stable-v5.10.180 commit bab8dc38b1a0a12bc064fc064269033bdcf5b88e category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I7ZCDZ CVE: NA Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=… -------------------------------- [ Upstream commit 91a0c0c1413239d0548b5aac4c82f38f6d53a91e ] When if_type equals zero and pci_resource_start(pdev, PCI_64BIT_BAR4) returns false, drbl_regs_memmap_p is not remapped. This passes a NULL pointer to iounmap(), which can trigger a WARN() on certain arches. When if_type equals six and pci_resource_start(pdev, PCI_64BIT_BAR4) returns true, drbl_regs_memmap_p may has been remapped and ctrl_regs_memmap_p is not remapped. This is a resource leak and passes a NULL pointer to iounmap(). To fix these issues, we need to add null checks before iounmap(), and change some goto labels. Fixes: 1351e69fc6db ("scsi: lpfc: Add push-to-adapter support to sli4") Signed-off-by: Shuchang Li <lishuchang(a)hust.edu.cn> Link: https://lore.kernel.org/r/20230404072133.1022-1-lishuchang@hust.edu.cn Reviewed-by: Justin Tee <justin.tee(a)broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen(a)oracle.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Yong Hu <yong.hu(a)windriver.com> --- drivers/scsi/lpfc/lpfc_init.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c index 17200b453cbb..1bb3c96a04bd 100644 --- a/drivers/scsi/lpfc/lpfc_init.c +++ b/drivers/scsi/lpfc/lpfc_init.c @@ -10477,7 +10477,7 @@ lpfc_sli4_pci_mem_setup(struct lpfc_hba *phba) goto out_iounmap_all; } else { error = -ENOMEM; - goto out_iounmap_all; + goto out_iounmap_ctrl; } } @@ -10495,7 +10495,7 @@ lpfc_sli4_pci_mem_setup(struct lpfc_hba *phba) dev_err(&pdev->dev, "ioremap failed for SLI4 HBA dpp registers.\n"); error = -ENOMEM; - goto out_iounmap_ctrl; + goto out_iounmap_all; } phba->pci_bar4_memmap_p = phba->sli4_hba.dpp_regs_memmap_p; } @@ -10520,9 +10520,11 @@ lpfc_sli4_pci_mem_setup(struct lpfc_hba *phba) return 0; out_iounmap_all: - iounmap(phba->sli4_hba.drbl_regs_memmap_p); + if (phba->sli4_hba.drbl_regs_memmap_p) + iounmap(phba->sli4_hba.drbl_regs_memmap_p); out_iounmap_ctrl: - iounmap(phba->sli4_hba.ctrl_regs_memmap_p); + if (phba->sli4_hba.ctrl_regs_memmap_p) + iounmap(phba->sli4_hba.ctrl_regs_memmap_p); out_iounmap_conf: iounmap(phba->sli4_hba.conf_regs_memmap_p); -- 2.34.1

2 1

[PATCH OLK-5.10] scsi: lpfc: Prevent lpfc_debugfs_lockstat_write() buffer overflow
by Yong Hu 25 Sep '23

25 Sep '23

From: Justin Tee <justin.tee(a)broadcom.com> stable inclusion from stable-v5.10.181 commit e0e7faee3a7dd6f51350cda64997116a247eb045 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I7ZCDZ CVE: NA Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=… -------------------------------- [ Upstream commit c6087b82a9146826564a55c5ca0164cac40348f5 ] A static code analysis tool flagged the possibility of buffer overflow when using copy_from_user() for a debugfs entry. Currently, it is possible that copy_from_user() copies more bytes than what would fit in the mybuf char array. Add a min() restriction check between sizeof(mybuf) - 1 and nbytes passed from the userspace buffer to protect against buffer overflow. Link: https://lore.kernel.org/r/20230301231626.9621-2-justintee8345@gmail.com Signed-off-by: Justin Tee <justin.tee(a)broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen(a)oracle.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Yong Hu <yong.hu(a)windriver.com> --- drivers/scsi/lpfc/lpfc_debugfs.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/lpfc/lpfc_debugfs.c b/drivers/scsi/lpfc/lpfc_debugfs.c index fbc76d69ea0b..2b77cbbcdccb 100644 --- a/drivers/scsi/lpfc/lpfc_debugfs.c +++ b/drivers/scsi/lpfc/lpfc_debugfs.c @@ -2159,10 +2159,13 @@ lpfc_debugfs_lockstat_write(struct file *file, const char __user *buf, char mybuf[64]; char *pbuf; int i; + size_t bsize; memset(mybuf, 0, sizeof(mybuf)); - if (copy_from_user(mybuf, buf, nbytes)) + bsize = min(nbytes, (sizeof(mybuf) - 1)); + + if (copy_from_user(mybuf, buf, bsize)) return -EFAULT; pbuf = &mybuf[0]; @@ -2183,7 +2186,7 @@ lpfc_debugfs_lockstat_write(struct file *file, const char __user *buf, qp->lock_conflict.wq_access = 0; } } - return nbytes; + return bsize; } #endif -- 2.34.1

2 1

[PATCH openEuler-23.09 0/5] LoongArch: add old BPI compatibility
by yangyinglu 25 Sep '23

25 Sep '23

yangyinglu (5): LoongArch: add kernel setvirtmap for runtime LoongArch: Old BPI compatibility LoongArch: Fix virtual machine startup error LoongArch: Fixed EIOINTC structure members LoongArch: use arch specific phys_to_dma arch/loongarch/Kconfig | 1 + arch/loongarch/include/asm/addrspace.h | 1 + arch/loongarch/include/asm/efi.h | 1 + arch/loongarch/include/asm/irq.h | 1 + arch/loongarch/include/asm/loongarch.h | 1 + arch/loongarch/kernel/Makefile | 1 + arch/loongarch/kernel/acpi.c | 7 +- arch/loongarch/kernel/dma.c | 26 +- arch/loongarch/kernel/efi.c | 175 ++++++++- arch/loongarch/kernel/env.c | 6 + arch/loongarch/kernel/irq.c | 25 +- arch/loongarch/kernel/legacy_boot.c | 484 +++++++++++++++++++++++++ arch/loongarch/kernel/legacy_boot.h | 90 +++++ arch/loongarch/kernel/mem.c | 26 +- arch/loongarch/kernel/numa.c | 39 +- arch/loongarch/kernel/reset.c | 3 +- arch/loongarch/kernel/setup.c | 18 +- arch/loongarch/kernel/smp.c | 6 +- arch/loongarch/pci/acpi.c | 147 +++++++- drivers/firmware/efi/Makefile | 1 + drivers/irqchip/irq-loongarch-cpu.c | 7 +- drivers/irqchip/irq-loongson-eiointc.c | 46 ++- drivers/irqchip/irq-loongson-pch-pic.c | 5 + 23 files changed, 1075 insertions(+), 42 deletions(-) create mode 100644 arch/loongarch/kernel/legacy_boot.c create mode 100644 arch/loongarch/kernel/legacy_boot.h -- 2.20.1

2 6

[PATCH openEuler-23.09 0/5] LoongArch: add rtc driver and fix
by Ming Wang 25 Sep '23

25 Sep '23

Ming Wang (5): rtc: Add rtc driver for the Loongson family chips LoongArch: kdump: Add memory reservation for old kernel LoongArch: kexec: Add compatibility with old interfaces LoongArch: Fix kdump failure on v40 interface specification LoongArch: kdump: Add high memory reservation arch/loongarch/kernel/machine_kexec.c | 45 ++- arch/loongarch/kernel/setup.c | 94 +++++- drivers/rtc/Kconfig | 13 + drivers/rtc/Makefile | 1 + drivers/rtc/rtc-loongson.c | 397 ++++++++++++++++++++++++++ 5 files changed, 535 insertions(+), 15 deletions(-) create mode 100644 drivers/rtc/rtc-loongson.c -- 2.39.2

2 6

启动 openEuler 2023 年度优秀项目推荐
by Huxinwei 25 Sep '23

25 Sep '23

各位社区的开发者：经 openEuler技术委员会9月20日会议讨论，现正式启动 openEuler 2023年度优秀项目的评选，请各位社区开发者和参与者推荐。当前在评选标准和项目设置上的考虑，可以参见：oEEP (openeuler.org)<https://www.openeuler.org/zh/oEEP/?name=oEEP-0007%20openEuler%E4%BC%98%E7%A…> 。截止 2023 年 10 月 15 日（周日）为止，任意三名以上社区参与者联名，可以向 tc(a)openeuler.org<mailto:tc@openeuler.org> 推荐您认可的项目。推荐项目的邮件请在邮件主题中明确包含 “openEuler 2023 年度优秀项目推荐” 字样。推荐项目的邮件内容中，请明确联名推荐人的邮箱地址和相应的 gitee id，推荐的项目名称，项目代码仓位置，推荐获奖的方向。我将汇总所有推荐，在 10 月 18 日之前通过社区邮件列表公示。欢迎大家的参与和推荐 Regards openEuler Technical Committee

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[PATCH openEuler-23.09 0/4] LoongArch: Add cpufreq and BMC
by Weihao Li 25 Sep '23

25 Sep '23

Weihao Li (4): cpufreq: Add cpufreq driver for LoongArch fbdev: add ls2k500sfb driver for ls2k500 bmc. ipmi: add ls2k500 bmc ipmi support. LoongArch: defconfig: enable CONFIG_FB_LS2K500=m. arch/loongarch/Kconfig | 6 + arch/loongarch/configs/loongson3_defconfig | 5 + arch/loongarch/include/asm/fpu.h | 13 +- drivers/char/ipmi/Makefile | 4 + drivers/char/ipmi/btlock.h | 92 ++ drivers/char/ipmi/ipmi_si.h | 11 + drivers/char/ipmi/ipmi_si_intf.c | 4 + drivers/char/ipmi/ipmi_si_ls2k500.c | 172 +++ drivers/char/ipmi/kcs_bmc_ls2k500.h | 67 + drivers/cpufreq/Kconfig | 11 + drivers/cpufreq/Makefile | 1 + drivers/cpufreq/loongson3-acpi-cpufreq.c | 1549 ++++++++++++++++++++ drivers/video/fbdev/Kconfig | 9 + drivers/video/fbdev/Makefile | 1 + drivers/video/fbdev/ls2k500sfb.c | 791 ++++++++++ 15 files changed, 2735 insertions(+), 1 deletion(-) create mode 100644 drivers/char/ipmi/btlock.h create mode 100644 drivers/char/ipmi/ipmi_si_ls2k500.c create mode 100644 drivers/char/ipmi/kcs_bmc_ls2k500.h create mode 100644 drivers/cpufreq/loongson3-acpi-cpufreq.c create mode 100644 drivers/video/fbdev/ls2k500sfb.c -- 2.20.1

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[PATCH openEuler-23.09 0/5] LoongArch: add rtc driver and fix
by Ming Wang 25 Sep '23

25 Sep '23

Ming Wang (5): rtc: Add rtc driver for the Loongson family chips LoongArch: kdump: Add memory reservation for old kernel LoongArch: kexec: Add compatibility with old interfaces LoongArch: Fix kdump failure on v40 interface specification LoongArch: kdump: Add high memory reservation arch/loongarch/kernel/machine_kexec.c | 45 ++- arch/loongarch/kernel/setup.c | 94 +++++- drivers/rtc/Kconfig | 13 + drivers/rtc/Makefile | 1 + drivers/rtc/rtc-loongson.c | 397 ++++++++++++++++++++++++++ 5 files changed, 535 insertions(+), 15 deletions(-) create mode 100644 drivers/rtc/rtc-loongson.c -- 2.39.2

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[PATCH OLK-5.10] sdei_watchdog: Avoid exception during sdei handler
by Zheng Zengkai 23 Sep '23

23 Sep '23

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I82QPR -------------------------------- On Kunpeng920 platform, when firmware triggers SDEI event too soon, A WARN_ON() will be called in sdei_watchdog_callback(), this leads to warning "sdei: unsafe: exception during handler" being reported in _sdei_handler(). As the comments for the warning mentioned, We took a synchronous exception from the SDEI handler. This could deadlock, and if you interrupt KVM it will hyp-panic instead. Remove the WARN_ON() to avoid potential issue and warning. Fixes: 0fa83fd0f8f7 ("sdei_watchdog: avoid possible false hardlockup") Signed-off-by: Zheng Zengkai <zhengzengkai(a)huawei.com> --- arch/arm64/kernel/watchdog_sdei.c | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/arm64/kernel/watchdog_sdei.c b/arch/arm64/kernel/watchdog_sdei.c index aa980b090598..7fd8c2d3dd1b 100644 --- a/arch/arm64/kernel/watchdog_sdei.c +++ b/arch/arm64/kernel/watchdog_sdei.c @@ -78,7 +78,6 @@ static int sdei_watchdog_callback(u32 event, if (delta < watchdog_thresh * (u64)NSEC_PER_SEC * 4 / 5) { pr_err(FW_BUG "SDEI Watchdog event triggered too soon, " "time to last check:%lld ns\n", delta); - WARN_ON(1); return 0; } -- 2.20.1

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[PATCH openEuler-1.0-LTS] sdei_watchdog: Avoid exception during sdei handler
by Zheng Zengkai 23 Sep '23

23 Sep '23

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I82QPR -------------------------------- On Kunpeng920 platform, when firmware triggers SDEI event too soon, A WARN_ON() will be called in sdei_watchdog_callback(), this leads to warning "sdei: unsafe: exception during handler" being reported in _sdei_handler(). As the comments for the warning mentioned, We took a synchronous exception from the SDEI handler. This could deadlock, and if you interrupt KVM it will hyp-panic instead. Remove the WARN_ON() to avoid potential issue and warning. Fixes: 37433b57ffdd ("sdei_watchdog: avoid possible false hardlockup") Signed-off-by: Zheng Zengkai <zhengzengkai(a)huawei.com> --- arch/arm64/kernel/watchdog_sdei.c | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/arm64/kernel/watchdog_sdei.c b/arch/arm64/kernel/watchdog_sdei.c index a499a14b23c1..5884abdaeb9d 100644 --- a/arch/arm64/kernel/watchdog_sdei.c +++ b/arch/arm64/kernel/watchdog_sdei.c @@ -78,7 +78,6 @@ static int sdei_watchdog_callback(u32 event, if (delta < watchdog_thresh * (u64)NSEC_PER_SEC * 4 / 5) { pr_err(FW_BUG "SDEI Watchdog event triggered too soon, " "time to last check:%lld ns\n", delta); - WARN_ON(1); return 0; } -- 2.20.1

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