diff --git a/drivers/net/ethernet/huawei/bma/Makefile b/drivers/net/ethernet/huawei/bma/Makefile index 0a09067bb529b4f38124be61c5210799cd93f61e..a96f4120815bbe8810c69908833d845746c4b11e 100644 --- a/drivers/net/ethernet/huawei/bma/Makefile +++ b/drivers/net/ethernet/huawei/bma/Makefile @@ -5,4 +5,5 @@ obj-$(CONFIG_BMA) += edma_drv/ obj-$(CONFIG_BMA) += cdev_drv/ obj-$(CONFIG_BMA) += veth_drv/ +obj-$(CONFIG_BMA) += kbox_drv/ obj-$(CONFIG_BMA) += cdev_veth_drv/ \ No newline at end of file diff --git a/drivers/net/ethernet/huawei/bma/kbox_drv/Makefile b/drivers/net/ethernet/huawei/bma/kbox_drv/Makefile new file mode 100644 index 0000000000000000000000000000000000000000..7d908d5b7f4bef4c6e25cc315ab3ac1e82813f24 --- /dev/null +++ b/drivers/net/ethernet/huawei/bma/kbox_drv/Makefile @@ -0,0 +1,5 @@ +obj-$(CONFIG_BMA) += host_kbox_drv.o +host_kbox_drv-y := kbox_main.o kbox_ram_drive.o kbox_ram_image.o kbox_ram_op.o kbox_printk.o kbox_dump.o kbox_hook.o kbox_panic.o +ifdef CONFIG_X86 +host_kbox_drv-y += kbox_mce.o +endif \ No newline at end of file diff --git a/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_dump.c b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_dump.c new file mode 100644 index 0000000000000000000000000000000000000000..1f3a73ca9d1f5c4892da5ad8ac33cb81129b8b26 --- /dev/null +++ b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_dump.c @@ -0,0 +1,121 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Huawei iBMA driver. + * Copyright (c) 2017, Huawei Technologies Co., Ltd. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include /* system_utsname */ +#include /* struct rtc_time */ +#include "kbox_include.h" +#include "kbox_main.h" +#include "kbox_printk.h" +#include "kbox_ram_image.h" +#include "kbox_ram_op.h" +#include "kbox_dump.h" +#include "kbox_panic.h" + +#ifdef CONFIG_X86 +#include "kbox_mce.h" +#endif + +#define THREAD_TMP_BUF_SIZE 256 + +static DEFINE_SPINLOCK(g_dump_lock); + +static const char g_day_in_month[] = { + 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 +}; + +#define LEAPS_THRU_END_OF(y) ((y) / 4 - (y) / 100 + (y) / 400) +#define LEAP_YEAR(year) \ + ((!((year) % 4) && ((year) % 100)) || !((year) % 400)) +#define MONTH_DAYS(month, year) \ + (g_day_in_month[(month)] + (int)(LEAP_YEAR(year) && (month == 1))) + +static void kbox_show_kernel_version(void) +{ + (void)kbox_dump_painc_info + ("\nOS : %s,\nRelease : %s,\nVersion : %s,\n", + init_uts_ns.name.sysname, + init_uts_ns.name.release, + init_uts_ns.name.version); + (void)kbox_dump_painc_info + ("Machine : %s,\nNodename : %s\n", + init_uts_ns.name.machine, + init_uts_ns.name.nodename); +} + +static void kbox_show_version(void) +{ + (void)kbox_dump_painc_info("\nKBOX_VERSION : %s\n", + KBOX_VERSION); +} + +static void kbox_show_time_stamps(void) +{ + struct rtc_time rtc_time_val = { }; + struct timespec64 uptime; + + ktime_get_coarse_real_ts64(&uptime); + rtc_time64_to_tm(uptime.tv_sec, &rtc_time_val); + + (void)kbox_dump_painc_info + ("Current time : %04d-%02d-%02d %02d:%02d:%02d\n", + rtc_time_val.tm_year + 1900, rtc_time_val.tm_mon + 1, + rtc_time_val.tm_mday, rtc_time_val.tm_hour, + rtc_time_val.tm_min, rtc_time_val.tm_sec); +} + +void kbox_dump_event(enum kbox_error_type_e type, unsigned long event, + const char *msg) +{ + if (!spin_trylock(&g_dump_lock)) + return; + + (void)kbox_dump_painc_info("\n====kbox begin dumping...====\n"); + + switch (type) { +#ifdef CONFIG_X86 + case KBOX_MCE_EVENT: + + kbox_handle_mce_dump(msg); + + break; +#endif + + case KBOX_OPPS_EVENT: + + break; + case KBOX_PANIC_EVENT: + if (kbox_handle_panic_dump(msg) == KBOX_FALSE) + goto end; + + break; + default: + break; + } + + kbox_show_kernel_version(); + + kbox_show_version(); + + kbox_show_time_stamps(); + + (void)kbox_dump_painc_info("\n====kbox end dump====\n"); + + kbox_output_syslog_info(); + kbox_output_printk_info(); + +end: + spin_unlock(&g_dump_lock); +} diff --git a/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_dump.h b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_dump.h new file mode 100644 index 0000000000000000000000000000000000000000..cba31377fbf33b3ae3bb86ea6cbc211d8848679b --- /dev/null +++ b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_dump.h @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Huawei iBMA driver. + * Copyright (c) 2017, Huawei Technologies Co., Ltd. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef _KBOX_DUMP_H_ +#define _KBOX_DUMP_H_ + +#define DUMPSTATE_MCE_RESET 1 +#define DUMPSTATE_OPPS_RESET 2 +#define DUMPSTATE_PANIC_RESET 3 + +enum kbox_error_type_e { + KBOX_MCE_EVENT = 1, + KBOX_OPPS_EVENT, + KBOX_PANIC_EVENT +}; + +int kbox_dump_thread_info(const char *fmt, ...); +void kbox_dump_event(enum kbox_error_type_e type, unsigned long event, + const char *msg); + +#endif diff --git a/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_hook.c b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_hook.c new file mode 100644 index 0000000000000000000000000000000000000000..b2acdf24188bb2a07c1abfe4275c319bd02e9859 --- /dev/null +++ b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_hook.c @@ -0,0 +1,101 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Huawei iBMA driver. + * Copyright (c) 2017, Huawei Technologies Co., Ltd. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include "kbox_include.h" +#include "kbox_dump.h" +#include "kbox_hook.h" + +int panic_notify(struct notifier_block *this, + unsigned long event, void *msg); + +static int die_notify(struct notifier_block *self, + unsigned long val, void *data); + +static struct notifier_block g_panic_nb = { + .notifier_call = panic_notify, + .priority = 100, +}; + +static struct notifier_block g_die_nb = { + .notifier_call = die_notify, +}; + +int panic_notify(struct notifier_block *pthis, unsigned long event, void *msg) +{ + UNUSED(pthis); + UNUSED(event); + + kbox_dump_event(KBOX_PANIC_EVENT, DUMPSTATE_PANIC_RESET, + (const char *)msg); + + return NOTIFY_OK; +} + +int die_notify(struct notifier_block *self, unsigned long val, void *data) +{ + struct kbox_die_args *args = (struct kbox_die_args *)data; + + if (!args) + return NOTIFY_OK; + + switch (val) { + case 1: + break; + case 5: + if (strcmp(args->str, "nmi") == 0) + return NOTIFY_OK; +#ifdef CONFIG_X86 + kbox_dump_event(KBOX_MCE_EVENT, DUMPSTATE_MCE_RESET, args->str); +#endif + break; + + default: + break; + } + + return NOTIFY_OK; +} + +int kbox_register_hook(void) +{ + int ret = 0; + + ret = atomic_notifier_chain_register(&panic_notifier_list, &g_panic_nb); + if (ret) + KBOX_MSG("atomic_notifier_chain_register g_panic_nb failed!\n"); + + ret = register_die_notifier(&g_die_nb); + if (ret) + KBOX_MSG("register_die_notifier g_die_nb failed!\n"); + + return ret; +} + +void kbox_unregister_hook(void) +{ + int ret = 0; + + ret = + atomic_notifier_chain_unregister(&panic_notifier_list, &g_panic_nb); + if (ret < 0) { + KBOX_MSG + ("atomic_notifier_chain_unregister g_panic_nb failed!\n"); + } + + ret = unregister_die_notifier(&g_die_nb); + if (ret < 0) + KBOX_MSG("unregister_die_notifier g_die_nb failed!\n"); +} diff --git a/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_hook.h b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_hook.h new file mode 100644 index 0000000000000000000000000000000000000000..00b3deb510b73ae555a969eddde6630e80563c25 --- /dev/null +++ b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_hook.h @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Huawei iBMA driver. + * Copyright (c) 2017, Huawei Technologies Co., Ltd. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef _KBOX_PANIC_HOOK_H_ +#define _KBOX_PANIC_HOOK_H_ + +struct kbox_die_args { + struct pt_regs *regs; + const char *str; + long err; + int trapnr; + int signr; +}; + +int register_die_notifier(struct notifier_block *nb); +int unregister_die_notifier(struct notifier_block *nb); + +int kbox_register_hook(void); +void kbox_unregister_hook(void); + +#endif diff --git a/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_include.h b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_include.h new file mode 100644 index 0000000000000000000000000000000000000000..ffadf3727734a29b0479a3a46afcdf8c449947e9 --- /dev/null +++ b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_include.h @@ -0,0 +1,40 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Huawei iBMA driver. + * Copyright (c) 2017, Huawei Technologies Co., Ltd. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef _KBOX_INCLUDE_H_ +#define _KBOX_INCLUDE_H_ + +#include +#include +#include + +#ifdef DRV_VERSION +#define KBOX_VERSION MICRO_TO_STR(DRV_VERSION) +#else +#define KBOX_VERSION "0.3.4" +#endif + +#define UNUSED(x) (x = x) +#define KBOX_FALSE (-1) +#define KBOX_TRUE 0 + +#ifdef KBOX_DEBUG +#define KBOX_MSG(fmt, args...) \ + netdev_notice(0, "kbox: %s(), %d, " fmt, __func__, __LINE__, ## args) +#else +#define KBOX_MSG(fmt, args...) +#endif + +#endif diff --git a/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_main.c b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_main.c new file mode 100644 index 0000000000000000000000000000000000000000..374ce49d570e2338fa3d4a8b3513aa4502208534 --- /dev/null +++ b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_main.c @@ -0,0 +1,168 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Huawei iBMA driver. + * Copyright (c) 2017, Huawei Technologies Co., Ltd. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include /* for rdmsr and MSR_IA32_MCG_STATUS */ +#include /* everything... */ +#include /* for fput */ +#include +#include /* copy_*_user */ +#include +#include "kbox_include.h" +#include "kbox_panic.h" +#include "kbox_main.h" +#include "kbox_printk.h" +#include "kbox_ram_image.h" +#include "kbox_ram_op.h" +#include "kbox_dump.h" +#include "kbox_hook.h" +#include "kbox_ram_drive.h" + +#ifdef CONFIG_X86 +#include +#include "kbox_mce.h" +#endif + +#define KBOX_LOADED_FILE ("/proc/kbox") + +#define KBOX_ROOT_ENTRY_NAME ("kbox") + +static int kbox_is_loaded(void) +{ + struct file *fp = NULL; + mm_segment_t old_fs; + + old_fs = get_fs(); /* save old flag */ + set_fs(KERNEL_DS); /* mark data from kernel space */ + + fp = filp_open(KBOX_LOADED_FILE, O_RDONLY, 0); + + if (IS_ERR(fp)) { + set_fs(old_fs); + return KBOX_FALSE; + } + + (void)filp_close(fp, NULL); + + set_fs(old_fs); /* restore old flag */ + + return KBOX_TRUE; +} + +static int kbox_printk_proc_init(void) +{ + struct proc_dir_entry *kbox_entry = NULL; + + if (kbox_is_loaded() != KBOX_TRUE) { + kbox_entry = proc_mkdir(KBOX_ROOT_ENTRY_NAME, NULL); + if (!kbox_entry) { + KBOX_MSG("can not create %s entry\n", + KBOX_ROOT_ENTRY_NAME); + return -ENOMEM; + } + } + + return KBOX_TRUE; +} + +int __init kbox_init(void) +{ + int ret = KBOX_TRUE; + int kbox_proc_exist = 0; + + if (!kbox_get_base_phy_addr()) + return -ENXIO; + + ret = kbox_super_block_init(); + if (ret) { + KBOX_MSG("kbox_super_block_init failed!\n"); + return ret; + } + + if (kbox_is_loaded() == KBOX_TRUE) + kbox_proc_exist = 1; + + ret = kbox_printk_init(kbox_proc_exist); + if (ret) + KBOX_MSG("kbox_printk_init failed!\n"); + + ret = kbox_panic_init(); + if (ret) { + KBOX_MSG("kbox_panic_init failed!\n"); + goto fail1; + } + + ret = kbox_register_hook(); + if (ret) { + KBOX_MSG("kbox_register_hook failed!\n"); + goto fail2; + } + +#ifdef CONFIG_X86 + (void)kbox_mce_init(); +#endif + ret = kbox_read_super_block(); + if (ret) { + KBOX_MSG("update super block failed!\n"); + goto fail3; + } + + if (kbox_printk_proc_init() != 0) { + KBOX_MSG("kbox_printk_proc_init failed!\n"); + goto fail4; + } + + ret = kbox_drive_init(); + if (ret) { + KBOX_MSG("kbox_drive_init failed!\n"); + goto fail5; + } + + return KBOX_TRUE; + +fail5: +fail4: +fail3: +#ifdef CONFIG_X86 + kbox_mce_exit(); +#endif + kbox_unregister_hook(); +fail2: + kbox_panic_exit(); +fail1: + kbox_printk_exit(); + + return ret; +} + +void __exit kbox_cleanup(void) +{ + kbox_drive_cleanup(); +#ifdef CONFIG_X86 + kbox_mce_exit(); +#endif + kbox_unregister_hook(); + kbox_panic_exit(); + kbox_printk_exit(); +} + +MODULE_AUTHOR("HUAWEI TECHNOLOGIES CO., LTD."); +MODULE_DESCRIPTION("HUAWEI KBOX DRIVER"); +MODULE_LICENSE("GPL"); +MODULE_VERSION(KBOX_VERSION); +#ifndef _lint +module_init(kbox_init); +module_exit(kbox_cleanup); +#endif diff --git a/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_main.h b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_main.h new file mode 100644 index 0000000000000000000000000000000000000000..2ae02b73652979a5e67023367b990619920feb0d --- /dev/null +++ b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_main.h @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Huawei iBMA driver. + * Copyright (c) 2017, Huawei Technologies Co., Ltd. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef _KBOX_MAIN_H_ +#define _KBOX_MAIN_H_ + +#include "../edma_drv/bma_include.h" +int kbox_init(void); +void kbox_cleanup(void); + +#endif diff --git a/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_mce.c b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_mce.c new file mode 100644 index 0000000000000000000000000000000000000000..e9bd931b826e78b37bb2e135ec794bf12549ccc4 --- /dev/null +++ b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_mce.c @@ -0,0 +1,264 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Huawei iBMA driver. + * Copyright (c) 2017, Huawei Technologies Co., Ltd. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "kbox_include.h" +#include "kbox_mce.h" +#include "kbox_dump.h" +#include "kbox_printk.h" +#include "kbox_panic.h" + +enum context { + KBOX_IN_KERNEL = 1, KBOX_IN_USER = 2 +}; + +enum ser { + KBOX_SER_REQUIRED = 1, KBOX_NO_SER = 2 +}; + +enum severity_level { + KBOX_MCE_NO_SEVERITY, + KBOX_MCE_KEEP_SEVERITY, + KBOX_MCE_SOME_SEVERITY, + KBOX_MCE_AO_SEVERITY, + KBOX_MCE_UC_SEVERITY, + KBOX_MCE_AR_SEVERITY, + KBOX_MCE_PANIC_SEVERITY, +}; + +static struct severity { + u64 kbox_mask; + u64 kbox_result; + unsigned char kbox_sev; + unsigned char kbox_mcgmask; + unsigned char kbox_mcgres; + unsigned char kbox_ser; + unsigned char kbox_context; + unsigned char kbox_covered; + char *kbox_msg; +} kbox_severities[] = { +#define KBOX_KERNEL .kbox_context = KBOX_IN_KERNEL +#define KBOX_USER .kbox_context = KBOX_IN_USER +#define KBOX_SER .kbox_ser = KBOX_SER_REQUIRED +#define KBOX_NOSER .kbox_ser = KBOX_NO_SER +#define KBOX_SEV(s) .kbox_sev = KBOX_MCE_ ## s ## _SEVERITY +#define KBOX_BITCLR(x, s, m, r...) \ + { .kbox_mask = x, .kbox_result = 0, KBOX_SEV(s), .kbox_msg = m, ## r } +#define KBOX_BITSET(x, s, m, r...) \ + { .kbox_mask = x, .kbox_result = x, KBOX_SEV(s), .kbox_msg = m, ## r } +#define KBOX_MCGMASK(x, res, s, m, r...) \ + { .kbox_mcgmask = x, .kbox_mcgres = res, KBOX_SEV(s), \ + .kbox_msg = m, ## r } +#define KBOX_MASK(x, y, s, m, r...) \ + { .kbox_mask = x, .kbox_result = y, KBOX_SEV(s), .kbox_msg = m, ## r } +#define KBOX_MCI_UC_S (MCI_STATUS_UC | MCI_STATUS_S) +#define KBOX_MCI_UC_SAR (MCI_STATUS_UC | MCI_STATUS_S | MCI_STATUS_AR) +#define KBOX_MCACOD 0xffff + +KBOX_BITCLR(MCI_STATUS_VAL, NO, "Invalid"), +KBOX_BITCLR(MCI_STATUS_EN, NO, "Not enabled"), +KBOX_BITSET(MCI_STATUS_PCC, PANIC, "Processor context corrupt"), + +KBOX_MCGMASK(MCG_STATUS_MCIP, 0, PANIC, "MCIP not set in MCA handler"), + +KBOX_MCGMASK(MCG_STATUS_RIPV | MCG_STATUS_EIPV, 0, PANIC, + "Neither restart nor error IP"), +KBOX_MCGMASK(MCG_STATUS_RIPV, 0, PANIC, "In kernel and no restart IP", + KBOX_KERNEL), +KBOX_BITCLR(MCI_STATUS_UC, KEEP, "Corrected error", KBOX_NOSER), +KBOX_MASK(MCI_STATUS_OVER | MCI_STATUS_UC | MCI_STATUS_EN, MCI_STATUS_UC, SOME, + "Spurious not enabled", KBOX_SER), + +KBOX_MASK(KBOX_MCI_UC_SAR, MCI_STATUS_UC, KEEP, + "Uncorrected no action required", KBOX_SER), +KBOX_MASK(MCI_STATUS_OVER | KBOX_MCI_UC_SAR, MCI_STATUS_UC | MCI_STATUS_AR, + PANIC, "Illegal combination (UCNA with AR=1)", KBOX_SER), +KBOX_MASK(MCI_STATUS_S, 0, KEEP, "Non signalled machine check", KBOX_SER), + +KBOX_MASK(MCI_STATUS_OVER | KBOX_MCI_UC_SAR, MCI_STATUS_OVER | KBOX_MCI_UC_SAR, + PANIC, "Action required with lost events", KBOX_SER), +KBOX_MASK(MCI_STATUS_OVER | KBOX_MCI_UC_SAR | KBOX_MCACOD, KBOX_MCI_UC_SAR, + PANIC, "Action required; unknown MCACOD", KBOX_SER), + +KBOX_MASK(KBOX_MCI_UC_SAR | MCI_STATUS_OVER | 0xfff0, KBOX_MCI_UC_S | 0xc0, + AO, "Action optional: memory scrubbing error", KBOX_SER), +KBOX_MASK(KBOX_MCI_UC_SAR | MCI_STATUS_OVER | KBOX_MCACOD, + KBOX_MCI_UC_S | 0x17a, AO, + "Action optional: last level cache writeback error", KBOX_SER), + +KBOX_MASK(MCI_STATUS_OVER | KBOX_MCI_UC_SAR, KBOX_MCI_UC_S, SOME, + "Action optional unknown MCACOD", KBOX_SER), +KBOX_MASK(MCI_STATUS_OVER | KBOX_MCI_UC_SAR, KBOX_MCI_UC_S | MCI_STATUS_OVER, + SOME, "Action optional with lost events", KBOX_SER), +KBOX_BITSET(MCI_STATUS_UC | MCI_STATUS_OVER, PANIC, "Overflowed uncorrected"), +KBOX_BITSET(MCI_STATUS_UC, UC, "Uncorrected"), +KBOX_BITSET(0, SOME, "No match") +}; + +static unsigned int g_kbox_nr_mce_banks; +static unsigned int g_kbox_mce_ser; +static atomic_t g_mce_dump_state = ATOMIC_INIT(0); + +static int kbox_mce_severity(u64 mcgstatus, u64 status) +{ + struct severity *s; + + for (s = kbox_severities;; s++) { + if ((status & s->kbox_mask) != s->kbox_result) + continue; + + if ((mcgstatus & s->kbox_mcgmask) != s->kbox_mcgres) + continue; + + if (s->kbox_ser == KBOX_SER_REQUIRED && !g_kbox_mce_ser) + continue; + + if (s->kbox_ser == KBOX_NO_SER && g_kbox_mce_ser) + continue; + + break; + } + + return s->kbox_sev; +} + +static u64 kbox_mce_rdmsrl(u32 ulmsr) +{ + u64 ullv = 0; + + if (rdmsrl_safe(ulmsr, &ullv)) { + (void)kbox_dump_painc_info("mce: Unable to read msr %d!\n", + ulmsr); + ullv = 0; + } + + return ullv; +} + +static int kbox_intel_machine_check(void) +{ + unsigned int idx = 0; + u64 mcgstatus = 0; + int worst = 0; + + mcgstatus = kbox_mce_rdmsrl(MSR_IA32_MCG_STATUS); + + (void) + kbox_dump_painc_info + ("CPU %d: Machine Check Exception MCG STATUS: 0x%016llx\n", + smp_processor_id(), mcgstatus); + + if (!(mcgstatus & MCG_STATUS_RIPV)) + (void)kbox_dump_painc_info("Unable to continue\n"); + + for (idx = 0; idx < g_kbox_nr_mce_banks; idx++) { + u64 status = 0; + u64 misc = 0; + u64 addr = 0; + int lseverity = 0; + + status = kbox_mce_rdmsrl(MSR_IA32_MCx_STATUS(idx)); + + (void)kbox_dump_painc_info("Bank %d STATUS: 0x%016llx\n", idx, + status); + + if (0 == (status & MCI_STATUS_VAL)) + continue; + + lseverity = kbox_mce_severity(mcgstatus, status); + if (lseverity == KBOX_MCE_KEEP_SEVERITY || + lseverity == KBOX_MCE_NO_SEVERITY) + continue; + + (void)kbox_dump_painc_info("severity = %d\n", lseverity); + + if (status & MCI_STATUS_MISCV) { + misc = kbox_mce_rdmsrl(MSR_IA32_MCx_MISC(idx)); + (void)kbox_dump_painc_info("misc = 0x%016llx\n", misc); + } + + if (status & MCI_STATUS_ADDRV) { + addr = kbox_mce_rdmsrl(MSR_IA32_MCx_ADDR(idx)); + (void)kbox_dump_painc_info("addr = 0x%016llx\n", addr); + } + + (void)kbox_dump_painc_info("\n"); + + if (lseverity > worst) + worst = lseverity; + } + + if (worst >= KBOX_MCE_UC_SEVERITY) + return KBOX_FALSE; + + (void)kbox_dump_painc_info("Attempting to continue.\n"); + + return KBOX_TRUE; +} + +int kbox_handle_mce_dump(const char *msg) +{ + int mce_recoverable = KBOX_FALSE; + + atomic_read(&g_mce_dump_state); + + mce_recoverable = kbox_intel_machine_check(); + if (mce_recoverable != KBOX_TRUE) { + static atomic_t mce_entry_tmp; + int flag = atomic_add_return(1, &mce_entry_tmp); + + if (flag != 1) + return KBOX_FALSE; + } + + atomic_set(&g_mce_dump_state, DUMPSTATE_MCE_RESET); + + if (msg) { + (void) + kbox_dump_painc_info + ("-------[ System may reset by %s! ]-------\n\n", msg); + } + + return KBOX_TRUE; +} + +int kbox_mce_init(void) +{ + u64 cap = 0; + + cap = kbox_mce_rdmsrl(MSR_IA32_MCG_CAP); + g_kbox_nr_mce_banks = cap & MCG_BANKCNT_MASK; + + if (cap & MCG_SER_P) + g_kbox_mce_ser = 1; + + KBOX_MSG("get nr_mce_banks:%d, g_kbox_mce_ser = %d, cap = 0x%016llx\n", + g_kbox_nr_mce_banks, g_kbox_mce_ser, cap); + + return KBOX_TRUE; +} + +void kbox_mce_exit(void) +{ + g_kbox_nr_mce_banks = 0; + g_kbox_mce_ser = 0; +} diff --git a/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_mce.h b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_mce.h new file mode 100644 index 0000000000000000000000000000000000000000..00d3b787c140ea7f40015867c2da511a62208c8d --- /dev/null +++ b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_mce.h @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Huawei iBMA driver. + * Copyright (c) 2017, Huawei Technologies Co., Ltd. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef _KBOX_MCE_H_ +#define _KBOX_MCE_H_ + +int kbox_handle_mce_dump(const char *msg); +int kbox_mce_init(void); +void kbox_mce_exit(void); + +#endif diff --git a/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_panic.c b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_panic.c new file mode 100644 index 0000000000000000000000000000000000000000..0c17cd2bae497b4eb2667b99c8624917f4dd0a4f --- /dev/null +++ b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_panic.c @@ -0,0 +1,187 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Huawei iBMA driver. + * Copyright (c) 2017, Huawei Technologies Co., Ltd. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include +#include "kbox_include.h" +#include "kbox_panic.h" +#include "kbox_ram_op.h" + +#ifdef CONFIG_X86 +#include +#endif + +#define PANIC_TMP_BUF_SIZE 256 + +static int g_panic_init_ok = KBOX_FALSE; + +static char *g_panic_info_buf_tmp; +static char *g_panic_info_buf; + +static unsigned int g_panic_info_start; + +static unsigned int g_panic_info_end; + +static unsigned int g_panic_info_len; + +static DEFINE_SPINLOCK(g_panic_buf_lock); + +static void kbox_emit_syslog_char(const char c) +{ + if (unlikely(!g_panic_info_buf)) + return; + + *(g_panic_info_buf + (g_panic_info_end % SLOT_LENGTH)) = c; + g_panic_info_end++; + + if (g_panic_info_end > SLOT_LENGTH) + g_panic_info_start++; + + if (g_panic_info_len < SLOT_LENGTH) + g_panic_info_len++; +} + +static int kbox_duplicate_syslog_info(const char *syslog_buf, + unsigned int buf_len) +{ + unsigned int idx = 0; + unsigned long flags = 0; + + if (!syslog_buf) + return 0; + + spin_lock_irqsave(&g_panic_buf_lock, flags); + + for (idx = 0; idx < buf_len; idx++) + kbox_emit_syslog_char(*syslog_buf++); + + spin_unlock_irqrestore(&g_panic_buf_lock, flags); + + return buf_len; +} + +int kbox_dump_painc_info(const char *fmt, ...) +{ + va_list args; + int num = 0; + char tmp_buf[PANIC_TMP_BUF_SIZE] = { }; + + va_start(args, fmt); + + num = vsnprintf(tmp_buf, sizeof(tmp_buf) - 1, fmt, args); + if (num >= 0) + (void)kbox_duplicate_syslog_info(tmp_buf, num); + + va_end(args); + + return num; +} + +void kbox_output_syslog_info(void) +{ + unsigned int start_tmp = 0; + unsigned int end_tmp = 0; + unsigned int len_tmp = 0; + unsigned long flags = 0; + + if (unlikely + (!g_panic_info_buf || !g_panic_info_buf_tmp)) + return; + + spin_lock_irqsave(&g_panic_buf_lock, flags); + if (g_panic_info_len == 0) { + spin_unlock_irqrestore(&g_panic_buf_lock, flags); + return; + } + + start_tmp = (g_panic_info_start % SLOT_LENGTH); + end_tmp = ((g_panic_info_end - 1) % SLOT_LENGTH); + len_tmp = g_panic_info_len; + + if (start_tmp > end_tmp) { + memcpy(g_panic_info_buf_tmp, + (g_panic_info_buf + start_tmp), + len_tmp - start_tmp); + memcpy((g_panic_info_buf_tmp + len_tmp - start_tmp), + g_panic_info_buf, + end_tmp + 1); + } else { + memcpy(g_panic_info_buf_tmp, + (char *)(g_panic_info_buf + start_tmp), + len_tmp); + } + + spin_unlock_irqrestore(&g_panic_buf_lock, flags); + + (void)kbox_write_panic_info(g_panic_info_buf_tmp, len_tmp); +} + +int kbox_panic_init(void) +{ + int ret = KBOX_TRUE; + + g_panic_info_buf = kmalloc(SLOT_LENGTH, GFP_KERNEL); + if (IS_ERR(g_panic_info_buf) || !g_panic_info_buf) { + KBOX_MSG("kmalloc g_panic_info_buf fail!\n"); + ret = -ENOMEM; + goto fail; + } + + memset(g_panic_info_buf, 0, SLOT_LENGTH); + + g_panic_info_buf_tmp = kmalloc(SLOT_LENGTH, GFP_KERNEL); + if (IS_ERR(g_panic_info_buf_tmp) || !g_panic_info_buf_tmp) { + KBOX_MSG("kmalloc g_panic_info_buf_tmp fail!\n"); + ret = -ENOMEM; + goto fail; + } + + memset(g_panic_info_buf_tmp, 0, SLOT_LENGTH); + + g_panic_init_ok = KBOX_TRUE; + + return ret; +fail: + + kfree(g_panic_info_buf); + g_panic_info_buf = NULL; + + kfree(g_panic_info_buf_tmp); + g_panic_info_buf_tmp = NULL; + + return ret; +} + +void kbox_panic_exit(void) +{ + if (g_panic_init_ok != KBOX_TRUE) + return; + + kfree(g_panic_info_buf); + g_panic_info_buf = NULL; + + kfree(g_panic_info_buf_tmp); + g_panic_info_buf_tmp = NULL; +} + +int kbox_handle_panic_dump(const char *msg) +{ + if (msg) + (void)kbox_dump_painc_info("panic string: %s\n", msg); + + return KBOX_TRUE; +} diff --git a/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_panic.h b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_panic.h new file mode 100644 index 0000000000000000000000000000000000000000..5715b66c06590b0a586eb08c55638f4b5f2df4b5 --- /dev/null +++ b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_panic.h @@ -0,0 +1,25 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Huawei iBMA driver. + * Copyright (c) 2017, Huawei Technologies Co., Ltd. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef _KBOX_PANIC_H_ +#define _KBOX_PANIC_H_ + +int kbox_handle_panic_dump(const char *msg); +void kbox_output_syslog_info(void); +int kbox_dump_painc_info(const char *fmt, ...); +int kbox_panic_init(void); +void kbox_panic_exit(void); + +#endif diff --git a/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_printk.c b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_printk.c new file mode 100644 index 0000000000000000000000000000000000000000..3b04ba2061082e4e327a3bd4f1cf94ca9196e431 --- /dev/null +++ b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_printk.c @@ -0,0 +1,363 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Huawei iBMA driver. + * Copyright (c) 2017, Huawei Technologies Co., Ltd. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include /* struct console */ +#include +#include +#include "kbox_include.h" +#include "kbox_main.h" +#include "kbox_printk.h" +#include "kbox_ram_image.h" +#include "kbox_ram_op.h" + +#define TMP_BUF_SIZE 256 + +static int g_printk_init_ok = KBOX_FALSE; +static char *g_printk_info_buf; +static char *g_printk_info_buf_tmp; +static struct printk_ctrl_block_tmp_s g_printk_ctrl_block_tmp = { }; + +static DEFINE_SPINLOCK(g_printk_buf_lock); + +static void kbox_printk_info_write(struct console *console, + const char *printk_buf, + unsigned int buf_len); + +static struct console g_printk_console = { + .name = "k_prtk", + .flags = CON_ENABLED | CON_PRINTBUFFER, + .write = kbox_printk_info_write, +}; + +static int kbox_printk_format_is_order(struct printk_info_ctrl_block_s * + printk_ctrl_blk_first, + struct printk_info_ctrl_block_s * + printk_ctrl_blk_second) +{ + if (!printk_ctrl_blk_first || !printk_ctrl_blk_second) + return KBOX_FALSE; + + if (!memcmp(printk_ctrl_blk_first->flag, PRINTK_CURR_FLAG, + PRINTK_FLAG_LEN) && + !memcmp(printk_ctrl_blk_second->flag, PRINTK_LAST_FLAG, + PRINTK_FLAG_LEN)) { + return KBOX_TRUE; + } + + return KBOX_FALSE; +} + +static void kbox_printk_format(struct printk_info_ctrl_block_s *printk_ctrl_blk, + const unsigned int len, const char *flag) +{ + if (!printk_ctrl_blk || !flag) + return; + + memset(printk_ctrl_blk, 0, len); + memcpy(printk_ctrl_blk->flag, flag, PRINTK_FLAG_LEN); +} + +static void kbox_printk_init_info_first + (struct image_super_block_s *kbox_super_block) +{ + KBOX_MSG("\n"); + if (kbox_printk_format_is_order(kbox_super_block->printk_ctrl_blk, + kbox_super_block->printk_ctrl_blk + + 1) == KBOX_TRUE) { + memcpy(kbox_super_block->printk_ctrl_blk[0].flag, + PRINTK_LAST_FLAG, PRINTK_FLAG_LEN); + memcpy(kbox_super_block->printk_ctrl_blk[1].flag, + PRINTK_CURR_FLAG, PRINTK_FLAG_LEN); + kbox_super_block->printk_ctrl_blk[1].len = 0; + g_printk_ctrl_block_tmp.printk_region = 1; + g_printk_ctrl_block_tmp.section = KBOX_SECTION_PRINTK2; + (void)kbox_clear_region(KBOX_SECTION_PRINTK2); + } else if (kbox_printk_format_is_order + (kbox_super_block->printk_ctrl_blk + 1, + kbox_super_block->printk_ctrl_blk) == KBOX_TRUE) { + memcpy(kbox_super_block->printk_ctrl_blk[1].flag, + PRINTK_LAST_FLAG, + PRINTK_FLAG_LEN); + memcpy(kbox_super_block->printk_ctrl_blk[0].flag, + PRINTK_CURR_FLAG, + PRINTK_FLAG_LEN); + + kbox_super_block->printk_ctrl_blk[0].len = 0; + g_printk_ctrl_block_tmp.printk_region = 0; + g_printk_ctrl_block_tmp.section = KBOX_SECTION_PRINTK1; + (void)kbox_clear_region(KBOX_SECTION_PRINTK1); + } else { + kbox_printk_format(kbox_super_block->printk_ctrl_blk, + sizeof(struct printk_info_ctrl_block_s), + PRINTK_CURR_FLAG); + kbox_printk_format(kbox_super_block->printk_ctrl_blk + 1, + sizeof(struct printk_info_ctrl_block_s), + PRINTK_LAST_FLAG); + g_printk_ctrl_block_tmp.printk_region = 0; + g_printk_ctrl_block_tmp.section = KBOX_SECTION_PRINTK1; + (void)kbox_clear_region(KBOX_SECTION_PRINTK1); + (void)kbox_clear_region(KBOX_SECTION_PRINTK2); + } + + g_printk_ctrl_block_tmp.start = 0; + g_printk_ctrl_block_tmp.end = 0; + g_printk_ctrl_block_tmp.valid_len = 0; +} + +static void kbox_printk_init_info_not_first + (struct image_super_block_s *kbox_super_block) +{ + KBOX_MSG("\n"); + if (KBOX_TRUE == + kbox_printk_format_is_order(kbox_super_block->printk_ctrl_blk, + kbox_super_block->printk_ctrl_blk + + 1)) { + g_printk_ctrl_block_tmp.printk_region = 0; + g_printk_ctrl_block_tmp.section = KBOX_SECTION_PRINTK1; + + } else if (KBOX_TRUE == + kbox_printk_format_is_order + (kbox_super_block->printk_ctrl_blk + 1, + kbox_super_block->printk_ctrl_blk)) { + g_printk_ctrl_block_tmp.printk_region = 1; + g_printk_ctrl_block_tmp.section = KBOX_SECTION_PRINTK2; + + } else { + kbox_printk_format(kbox_super_block->printk_ctrl_blk, + sizeof(struct printk_info_ctrl_block_s), + PRINTK_CURR_FLAG); + kbox_printk_format(kbox_super_block->printk_ctrl_blk + 1, + sizeof(struct printk_info_ctrl_block_s), + PRINTK_LAST_FLAG); + g_printk_ctrl_block_tmp.printk_region = 0; + g_printk_ctrl_block_tmp.section = KBOX_SECTION_PRINTK1; + (void)kbox_clear_region(KBOX_SECTION_PRINTK1); + (void)kbox_clear_region(KBOX_SECTION_PRINTK2); + } + + g_printk_ctrl_block_tmp.start = 0; +} + +static int kbox_printk_init_info(int kbox_proc_exist) +{ + struct image_super_block_s kbox_super_block = { }; + unsigned int read_len = 0; + unsigned int write_len = 0; + + read_len = + kbox_read_from_ram(SECTION_KERNEL_OFFSET, + (unsigned int)sizeof(struct image_super_block_s), + (char *)&kbox_super_block, KBOX_SECTION_KERNEL); + if (read_len != sizeof(struct image_super_block_s)) { + KBOX_MSG("fail to get superblock data!\n"); + return KBOX_FALSE; + } + + if (kbox_proc_exist) { + kbox_printk_init_info_not_first(&kbox_super_block); + if (KBOX_TRUE != + kbox_read_printk_info(g_printk_info_buf, + &g_printk_ctrl_block_tmp)) { + g_printk_ctrl_block_tmp.end = 0; + g_printk_ctrl_block_tmp.valid_len = 0; + } + } else { + kbox_printk_init_info_first(&kbox_super_block); + } + + kbox_super_block.checksum = 0; + kbox_super_block.checksum = + ~((unsigned char) + kbox_checksum((char *)&kbox_super_block, + (unsigned int)sizeof(kbox_super_block))) + 1; + write_len = + kbox_write_to_ram(SECTION_KERNEL_OFFSET, + (unsigned int)sizeof(struct image_super_block_s), + (char *)&kbox_super_block, KBOX_SECTION_KERNEL); + if (write_len <= 0) { + KBOX_MSG("fail to write superblock data!\n"); + return KBOX_FALSE; + } + + return KBOX_TRUE; +} + +void kbox_output_printk_info(void) +{ + unsigned int start_tmp = 0; + unsigned int end_tmp = 0; + unsigned int len_tmp = 0; + unsigned long flags = 0; + + if (unlikely(!g_printk_info_buf || !g_printk_info_buf_tmp)) + return; + + if (g_printk_init_ok != KBOX_TRUE) + return; + + spin_lock_irqsave(&g_printk_buf_lock, flags); + if (g_printk_ctrl_block_tmp.valid_len == 0) { + spin_unlock_irqrestore(&g_printk_buf_lock, flags); + return; + } + + start_tmp = (g_printk_ctrl_block_tmp.start % SECTION_PRINTK_LEN); + end_tmp = ((g_printk_ctrl_block_tmp.end - 1) % SECTION_PRINTK_LEN); + len_tmp = g_printk_ctrl_block_tmp.valid_len; + + if (start_tmp > end_tmp) { + memcpy(g_printk_info_buf_tmp, + g_printk_info_buf + start_tmp, + len_tmp - start_tmp); + memcpy(g_printk_info_buf_tmp + len_tmp - start_tmp, + g_printk_info_buf, + end_tmp + 1); + } else { + memcpy(g_printk_info_buf_tmp, + g_printk_info_buf + start_tmp, + len_tmp); + } + + spin_unlock_irqrestore(&g_printk_buf_lock, flags); + + (void)kbox_write_printk_info(g_printk_info_buf_tmp, + &g_printk_ctrl_block_tmp); +} + +static void kbox_emit_printk_char(const char c) +{ + if (unlikely(!g_printk_info_buf)) + return; + + *(g_printk_info_buf + + (g_printk_ctrl_block_tmp.end % SECTION_PRINTK_LEN)) = c; + g_printk_ctrl_block_tmp.end++; + + if (g_printk_ctrl_block_tmp.end > SECTION_PRINTK_LEN) + g_printk_ctrl_block_tmp.start++; + + if (g_printk_ctrl_block_tmp.end < SECTION_PRINTK_LEN) + g_printk_ctrl_block_tmp.valid_len++; +} + +static int kbox_duplicate_printk_info(const char *printk_buf, + unsigned int buf_len) +{ + unsigned int idx = 0; + unsigned long flags = 0; + + spin_lock_irqsave(&g_printk_buf_lock, flags); + for (idx = 0; idx < buf_len; idx++) + kbox_emit_printk_char(*printk_buf++); + + spin_unlock_irqrestore(&g_printk_buf_lock, flags); + + return buf_len; +} + +int kbox_dump_printk_info(const char *fmt, ...) +{ + va_list args; + int num = 0; + char tmp_buf[TMP_BUF_SIZE] = { }; + + if (g_printk_init_ok != KBOX_TRUE) + return 0; + + va_start(args, fmt); + num = vsnprintf(tmp_buf, sizeof(tmp_buf) - 1, fmt, args); + if (num >= 0) + (void)kbox_duplicate_printk_info(tmp_buf, num); + + va_end(args); + + return num; +} + +static void kbox_printk_info_write(struct console *pconsole, + const char *printk_buf, unsigned int buf_len) +{ + UNUSED(pconsole); + + if (unlikely(!printk_buf)) + return; + + (void)kbox_duplicate_printk_info(printk_buf, buf_len); +} + +int kbox_printk_init(int kbox_proc_exist) +{ + int ret = KBOX_TRUE; + + g_printk_info_buf = kmalloc(SECTION_PRINTK_LEN, + GFP_KERNEL); + if (IS_ERR(g_printk_info_buf) || !g_printk_info_buf) { + KBOX_MSG("kmalloc g_printk_info_buf fail!\n"); + ret = -ENOMEM; + goto fail; + } + + memset(g_printk_info_buf, 0, SECTION_PRINTK_LEN); + + g_printk_info_buf_tmp = kmalloc(SECTION_PRINTK_LEN, + GFP_KERNEL); + if (IS_ERR(g_printk_info_buf_tmp) || !g_printk_info_buf_tmp) { + KBOX_MSG("kmalloc g_printk_info_buf_tmp fail!\n"); + ret = -ENOMEM; + goto fail; + } + + memset(g_printk_info_buf_tmp, 0, SECTION_PRINTK_LEN); + + ret = kbox_printk_init_info(kbox_proc_exist); + if (ret != KBOX_TRUE) { + KBOX_MSG("kbox_printk_init_info failed!\n"); + goto fail; + } + + register_console(&g_printk_console); + + g_printk_init_ok = KBOX_TRUE; + + return ret; +fail: + + kfree(g_printk_info_buf); + g_printk_info_buf = NULL; + + kfree(g_printk_info_buf_tmp); + g_printk_info_buf_tmp = NULL; + + return ret; +} + +void kbox_printk_exit(void) +{ + int ret = 0; + + if (g_printk_init_ok != KBOX_TRUE) + return; + + kfree(g_printk_info_buf); + g_printk_info_buf = NULL; + + kfree(g_printk_info_buf_tmp); + g_printk_info_buf_tmp = NULL; + + ret = unregister_console(&g_printk_console); + if (ret) + KBOX_MSG("unregister_console failed!\n"); +} diff --git a/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_printk.h b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_printk.h new file mode 100644 index 0000000000000000000000000000000000000000..cece825626a84f8189894fe194c681899a4c2f43 --- /dev/null +++ b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_printk.h @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Huawei iBMA driver. + * Copyright (c) 2017, Huawei Technologies Co., Ltd. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef _KBOX_PRINTK_H_ +#define _KBOX_PRINTK_H_ +#include "kbox_ram_image.h" + +struct printk_ctrl_block_tmp_s { + int printk_region; + enum kbox_section_e section; + unsigned int start; + unsigned int end; + unsigned int valid_len;/* valid length of printk section */ +}; + +int kbox_printk_init(int kbox_proc_exist); +void kbox_output_printk_info(void); +int kbox_dump_printk_info(const char *fmt, ...); +void kbox_printk_exit(void); + +#endif diff --git a/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_ram_drive.c b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_ram_drive.c new file mode 100644 index 0000000000000000000000000000000000000000..829e2a498843639de51f4ef4ae4c57529dfc7141 --- /dev/null +++ b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_ram_drive.c @@ -0,0 +1,188 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Huawei iBMA driver. + * Copyright (c) 2017, Huawei Technologies Co., Ltd. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include /* everything... */ +#include +#include +#include +#include +#include "kbox_include.h" +#include "kbox_ram_drive.h" +#include "kbox_main.h" +#include "kbox_ram_image.h" +#include "kbox_ram_op.h" + +#define KBOX_DEVICE_NAME "kbox" +#define KBOX_DEVICE_MINOR 255 + +static struct kbox_dev_s *g_kbox_dev; +static ssize_t kbox_read(struct file *filp, char __user *data, size_t count, + loff_t *ppos); +static ssize_t kbox_write(struct file *filp, const char __user *data, + size_t count, loff_t *ppos); + +static long kbox_ioctl(struct file *filp, unsigned int cmd, unsigned long arg); +static int kbox_mmap(struct file *filp, struct vm_area_struct *vma); +static int kbox_open(struct inode *inode, struct file *filp); +static int kbox_release(struct inode *inode, struct file *filp); + +const struct file_operations kbox_fops = { + .owner = THIS_MODULE, + .read = kbox_read, + .write = kbox_write, + .unlocked_ioctl = kbox_ioctl, + .mmap = kbox_mmap, + .open = kbox_open, + .release = kbox_release, +}; + +static struct miscdevice kbox_device = { + KBOX_DEVICE_MINOR, + KBOX_DEVICE_NAME, + &kbox_fops, +}; + +static ssize_t kbox_read(struct file *filp, char __user *data, size_t count, + loff_t *ppos) +{ + int read_len = 0; + + if (!filp || !data || !ppos) { + KBOX_MSG("input NULL point!\n"); + return -EFAULT; + } + + read_len = kbox_read_op((long long)(*ppos), + count, + data, + KBOX_SECTION_USER); + if (read_len < 0) + return -EFAULT; + + *ppos += read_len; + + return read_len; +} + +static ssize_t kbox_write(struct file *filp, const char __user *data, + size_t count, loff_t *ppos) +{ + int write_len = 0; + + if (!filp || !data || !ppos) { + KBOX_MSG("input NULL point!\n"); + return -EFAULT; + } + + write_len = kbox_write_op((long long)(*ppos), + count, data, KBOX_SECTION_USER); + if (write_len < 0) + return -EFAULT; + + *ppos += write_len; + + return write_len; +} + +static long kbox_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) +{ + UNUSED(filp); + + if (kbox_ioctl_detail(cmd, arg) < 0) + return -ENOTTY; + + return 0; +} + +static int kbox_mmap(struct file *filp, struct vm_area_struct *vma) +{ + if (!filp || !vma) { + KBOX_MSG("input NULL point!\n"); + return -EFAULT; + } + + if (kbox_mmap_ram(filp, vma, KBOX_SECTION_USER) < 0) + return -EFAULT; + + return 0; +} + +static int kbox_open(struct inode *pinode, struct file *filp) +{ + UNUSED(pinode); + + if ((g_kbox_dev) && (!atomic_dec_and_test(&g_kbox_dev->au_count))) { + atomic_inc(&g_kbox_dev->au_count); + KBOX_MSG("EBUSY\n"); + return -EBUSY; + } + + filp->private_data = (void *)g_kbox_dev; + + return 0; +} + +int kbox_release(struct inode *pinode, struct file *filp) +{ + struct kbox_dev_s *kbox_dev = (struct kbox_dev_s *)filp->private_data; + + UNUSED(pinode); + + KBOX_MSG("\n"); + + if (kbox_dev) + atomic_inc(&kbox_dev->au_count); + + return 0; +} + +int kbox_drive_init(void) +{ + int ret = 0; + + KBOX_MSG("\n"); + + g_kbox_dev = + kmalloc(sizeof(struct kbox_dev_s), GFP_KERNEL); + if (!g_kbox_dev) + return -ENOMEM; + + ret = misc_register(&kbox_device); + if (ret) + goto fail; + + atomic_set(&g_kbox_dev->au_count, 1); + + KBOX_MSG("ok!\n"); + + return ret; + +fail: + kfree(g_kbox_dev); + g_kbox_dev = NULL; + + return ret; +} + +void kbox_drive_cleanup(void) +{ + if (!g_kbox_dev) + return; + + misc_deregister(&kbox_device); + + kfree(g_kbox_dev); + g_kbox_dev = NULL; +} diff --git a/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_ram_drive.h b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_ram_drive.h new file mode 100644 index 0000000000000000000000000000000000000000..52707c4b82c54b9cc48d8774c9663c8010b439b9 --- /dev/null +++ b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_ram_drive.h @@ -0,0 +1,31 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Huawei iBMA driver. + * Copyright (c) 2017, Huawei Technologies Co., Ltd. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef _KBOX_RAM_DRIVE_H_ +#define _KBOX_RAM_DRIVE_H_ + +#include +#include + +struct kbox_dev_s { + atomic_t au_count; + + struct kbox_pci_dev_s *kbox_pci_dev; +}; + +int kbox_drive_init(void); +void kbox_drive_cleanup(void); + +#endif diff --git a/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_ram_image.c b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_ram_image.c new file mode 100644 index 0000000000000000000000000000000000000000..f57083261983a16a47f0eee745e5297bec73be18 --- /dev/null +++ b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_ram_image.c @@ -0,0 +1,135 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Huawei iBMA driver. + * Copyright (c) 2017, Huawei Technologies Co., Ltd. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include "kbox_include.h" +#include "kbox_main.h" +#include "kbox_ram_image.h" + +void __iomem *kbox_get_section_addr(enum kbox_section_e kbox_section) +{ + void __iomem *kbox_addr = kbox_get_base_addr(); + unsigned long kbox_len = kbox_get_io_len(); + + if (!kbox_addr || kbox_len == 0) { + KBOX_MSG("get kbox_addr or kbox_len failed!\n"); + return NULL; + } + + switch (kbox_section) { + case KBOX_SECTION_KERNEL: + return kbox_addr; + + case KBOX_SECTION_PANIC: + return kbox_addr + SECTION_KERNEL_LEN; + + case KBOX_SECTION_THREAD: + return kbox_addr + SECTION_KERNEL_LEN + SECTION_PANIC_LEN; + + case KBOX_SECTION_PRINTK1: + return kbox_addr + (kbox_len - (2 * SECTION_PRINTK_LEN) - + SECTION_USER_LEN); + + case KBOX_SECTION_PRINTK2: + return kbox_addr + (kbox_len - SECTION_PRINTK_LEN - + SECTION_USER_LEN); + + case KBOX_SECTION_USER: + return kbox_addr + (kbox_len - SECTION_USER_LEN); + + case KBOX_SECTION_ALL: + return kbox_addr; + + default: + KBOX_MSG("input kbox_section error!\n"); + return NULL; + } +} + +unsigned long kbox_get_section_len(enum kbox_section_e kbox_section) +{ + unsigned long kbox_len = kbox_get_io_len(); + + if (kbox_len == 0) { + KBOX_MSG("get kbox_len failed!\n"); + return 0; + } + + switch (kbox_section) { + case KBOX_SECTION_KERNEL: + return SECTION_KERNEL_LEN; + + case KBOX_SECTION_PANIC: + return SECTION_PANIC_LEN; + + case KBOX_SECTION_THREAD: + return (kbox_len - (2 * SECTION_PRINTK_LEN) - + SECTION_USER_LEN - SECTION_KERNEL_LEN - + SECTION_PANIC_LEN); + + case KBOX_SECTION_PRINTK1: + case KBOX_SECTION_PRINTK2: + return SECTION_PRINTK_LEN; + + case KBOX_SECTION_USER: + return SECTION_USER_LEN; + + case KBOX_SECTION_ALL: + return kbox_len; + + default: + KBOX_MSG("input kbox_section error!\n"); + return 0; + } +} + +unsigned long kbox_get_section_phy_addr(enum kbox_section_e kbox_section) +{ + unsigned long kbox_phy_addr = kbox_get_base_phy_addr(); + unsigned long kbox_len = kbox_get_io_len(); + + if (kbox_phy_addr == 0 || kbox_len == 0) { + KBOX_MSG("get kbox_phy_addr or kbox_len failed!\n"); + return 0; + } + + switch (kbox_section) { + case KBOX_SECTION_KERNEL: + return kbox_phy_addr; + + case KBOX_SECTION_PANIC: + return kbox_phy_addr + SECTION_KERNEL_LEN; + + case KBOX_SECTION_THREAD: + return kbox_phy_addr + SECTION_KERNEL_LEN + SECTION_PANIC_LEN; + + case KBOX_SECTION_PRINTK1: + return kbox_phy_addr + (kbox_len - (2 * SECTION_PRINTK_LEN) - + SECTION_USER_LEN); + + case KBOX_SECTION_PRINTK2: + return kbox_phy_addr + (kbox_len - SECTION_PRINTK_LEN - + SECTION_USER_LEN); + + case KBOX_SECTION_USER: + return kbox_phy_addr + (kbox_len - SECTION_USER_LEN); + + case KBOX_SECTION_ALL: + return kbox_phy_addr; + + default: + KBOX_MSG("input kbox_section error!\n"); + return 0; + } +} diff --git a/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_ram_image.h b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_ram_image.h new file mode 100644 index 0000000000000000000000000000000000000000..d1b01bd9ea115d6aa4f6ae0cab446cef047bf627 --- /dev/null +++ b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_ram_image.h @@ -0,0 +1,84 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Huawei iBMA driver. + * Copyright (c) 2017, Huawei Technologies Co., Ltd. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef _KBOX_RAM_IMAGE_H_ +#define _KBOX_RAM_IMAGE_H_ + +enum kbox_section_e { + KBOX_SECTION_KERNEL = 1, + KBOX_SECTION_PANIC = 2, + KBOX_SECTION_THREAD = 3, + KBOX_SECTION_PRINTK1 = 4, + KBOX_SECTION_PRINTK2 = 5, + KBOX_SECTION_USER = 6, + KBOX_SECTION_ALL = 7 +}; + +#define KBOX_BIG_ENDIAN (0x2B) +#define KBOX_LITTLE_ENDIAN (0xB2) +#define IMAGE_VER (0x0001) +#define IMAGE_MAGIC (0xB202C086) +#define VALID_IMAGE(x) (IMAGE_MAGIC == (x)->magic_flag) +#define SLOT_NUM (8) +#define SLOT_LENGTH (16 * 1024) +#define MAX_RECORD_NO (0xFF) +#define MAX_USE_NUMS (0xFF) + +#define PRINTK_NUM (2) +#define PRINTK_CURR_FLAG ("curr") +#define PRINTK_LAST_FLAG ("last") +#define PRINTK_FLAG_LEN (4) + +struct panic_ctrl_block_s { + unsigned char use_nums; + unsigned char number; + unsigned short len; + unsigned int time; +}; + +struct thread_info_ctrl_block_s { + unsigned int thread_info_len; +}; + +struct printk_info_ctrl_block_s { + unsigned char flag[PRINTK_FLAG_LEN]; + unsigned int len; +}; + +struct image_super_block_s { + unsigned char byte_order; + unsigned char checksum; + unsigned short version; + unsigned int magic_flag; + unsigned int panic_nums; + struct panic_ctrl_block_s panic_ctrl_blk[SLOT_NUM]; + struct printk_info_ctrl_block_s printk_ctrl_blk[PRINTK_NUM]; + struct thread_info_ctrl_block_s thread_ctrl_blk; +}; + +#define SECTION_KERNEL_LEN (sizeof(struct image_super_block_s)) +#define SECTION_PANIC_LEN (8 * SLOT_LENGTH) +#define SECTION_PRINTK_LEN (512 * 1024) +#define SECTION_USER_LEN (2 * 1024 * 1024) + +#define SECTION_KERNEL_OFFSET (0) +#define SECTION_PANIC_OFFSET SECTION_KERNEL_LEN +#define SECTION_THREAD_OFFSET (SECTION_KERNEL_LEN + SECTION_PANIC_LEN) + +void __iomem *kbox_get_section_addr(enum kbox_section_e kbox_section); +unsigned long kbox_get_section_len(enum kbox_section_e kbox_section); +unsigned long kbox_get_section_phy_addr(enum kbox_section_e kbox_section); + +#endif diff --git a/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_ram_op.c b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_ram_op.c new file mode 100644 index 0000000000000000000000000000000000000000..49690bab1cefeeae590b055af6248d799acdbb3e --- /dev/null +++ b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_ram_op.c @@ -0,0 +1,986 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Huawei iBMA driver. + * Copyright (c) 2017, Huawei Technologies Co., Ltd. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include +#include /* copy_*_user */ +#include /* udelay */ +#include +#include "kbox_include.h" +#include "kbox_main.h" +#include "kbox_ram_image.h" +#include "kbox_ram_op.h" + +#ifndef VM_RESERVED +#define VM_RESERVED 0x00080000 +#endif + +static DEFINE_SPINLOCK(g_kbox_super_block_lock); +static DEFINE_SEMAPHORE(user_sem); + +union char_int_transfer_u { + int data_int; + char data_char[KBOX_RW_UNIT]; +}; + +static struct image_super_block_s g_kbox_super_block = { }; + +void kbox_write_to_pci(void __iomem *dest, const void *src, int len, + unsigned long offset) +{ + union char_int_transfer_u transfer = { }; + int idx = 0; + int j = 0; + int four_byte_len = 0; + int left_len = 0; + char *src_temp = (char *)src; + char *dest_temp = (char *)dest; + int first_write_num = 0; + + if ((offset % KBOX_RW_UNIT) != 0) { + transfer.data_int = + *(int *)(dest_temp + offset - (offset % KBOX_RW_UNIT)); + + rmb();/* memory barriers. */ + first_write_num = + ((len + (offset % KBOX_RW_UNIT)) > + KBOX_RW_UNIT) ? (KBOX_RW_UNIT - + (offset % KBOX_RW_UNIT)) : len; + for (idx = (int)(offset % KBOX_RW_UNIT); + idx < (int)(first_write_num + (offset % KBOX_RW_UNIT)); + idx++) { + if (!src_temp) + return; + + transfer.data_char[idx] = *src_temp; + src_temp++; + } + *(int *)(dest_temp + offset - (offset % KBOX_RW_UNIT)) = + transfer.data_int; + wmb();/* memory barriers. */ + len -= first_write_num; + offset += first_write_num; + } + + four_byte_len = (len / KBOX_RW_UNIT); + left_len = (len % KBOX_RW_UNIT); + for (idx = 0; idx < four_byte_len; idx++) { + for (j = 0; j < KBOX_RW_UNIT; j++) { + if (!src_temp) + return; + + transfer.data_char[j] = *src_temp; + src_temp++; + } + *(int *)(dest_temp + offset) = transfer.data_int; + wmb();/* memory barriers. */ + offset += KBOX_RW_UNIT; + } + + if (left_len != 0) { + transfer.data_int = *(int *)(dest_temp + offset); + rmb();/* memory barriers. */ + for (idx = 0; idx < left_len; idx++) { + if (!src_temp) + return; + + transfer.data_char[idx] = *src_temp; + src_temp++; + } + *(int *)(dest_temp + offset) = transfer.data_int; + wmb();/* memory barriers. */ + } + + udelay(1); +} + +void kbox_read_from_pci(void *dest, void __iomem *src, int len, + unsigned long offset) +{ + union char_int_transfer_u transfer = { }; + int idx = 0; + int j = 0; + int four_byte_len = 0; + int left_len = 0; + char *dest_temp = (char *)dest; + char *src_temp = (char *)src; + int first_read_num = 0; + + if ((offset % KBOX_RW_UNIT) != 0) { + transfer.data_int = + *(int *)(src_temp + offset - (offset % KBOX_RW_UNIT)); + first_read_num = + ((len + (offset % KBOX_RW_UNIT)) > + KBOX_RW_UNIT) ? (KBOX_RW_UNIT - + (offset % KBOX_RW_UNIT)) : len; + rmb();/* memory barriers. */ + for (idx = (int)(offset % KBOX_RW_UNIT); + idx < (int)(first_read_num + (offset % KBOX_RW_UNIT)); + idx++) { + if (!dest_temp) + return; + + *dest_temp = transfer.data_char[idx]; + dest_temp++; + } + len -= first_read_num; + offset += first_read_num; + } + + four_byte_len = (len / KBOX_RW_UNIT); + left_len = (len % KBOX_RW_UNIT); + for (idx = 0; idx < four_byte_len; idx++) { + transfer.data_int = *(int *)(src_temp + offset); + rmb();/* memory barriers. */ + for (j = 0; j < KBOX_RW_UNIT; j++) { + if (!dest_temp) + return; + + *dest_temp = transfer.data_char[j]; + dest_temp++; + } + offset += KBOX_RW_UNIT; + } + + if (left_len != 0) { + transfer.data_int = *(int *)(src_temp + offset); + rmb();/* memory barriers. */ + for (idx = 0; idx < left_len; idx++) { + if (!dest_temp) + return; + + *dest_temp = transfer.data_char[idx]; + dest_temp++; + } + } +} + +void kbox_memset_pci(void __iomem *dest, const char set_byte, int len, + unsigned long offset) +{ + union char_int_transfer_u transfer = { }; + int idx = 0; + int four_byte_len = 0; + int left_len = 0; + char *dest_temp = (char *)dest; + int first_memset_num = 0; + + if ((offset % KBOX_RW_UNIT) != 0) { + transfer.data_int = + *(int *)(dest_temp + offset - (offset % KBOX_RW_UNIT)); + rmb();/* memory barriers. */ + first_memset_num = + ((len + (offset % KBOX_RW_UNIT)) > + KBOX_RW_UNIT) ? (KBOX_RW_UNIT - + (offset % KBOX_RW_UNIT)) : len; + for (idx = (int)(offset % KBOX_RW_UNIT); + idx < (int)(first_memset_num + (offset % KBOX_RW_UNIT)); + idx++) { + transfer.data_char[idx] = set_byte; + } + *(int *)(dest_temp + offset - (offset % KBOX_RW_UNIT)) = + transfer.data_int; + wmb();/* memory barriers. */ + len -= first_memset_num; + offset += first_memset_num; + } + + four_byte_len = (len / KBOX_RW_UNIT); + left_len = (len % KBOX_RW_UNIT); + for (idx = 0; idx < KBOX_RW_UNIT; idx++) + transfer.data_char[idx] = set_byte; + + for (idx = 0; idx < four_byte_len; idx++) { + *(int *)(dest_temp + offset) = transfer.data_int; + wmb();/* memory barriers. */ + offset += KBOX_RW_UNIT; + } + + if (left_len != 0) { + transfer.data_int = *(int *)(dest_temp + offset); + rmb();/* memory barriers. */ + for (idx = 0; idx < left_len; idx++) + transfer.data_char[idx] = set_byte; + + *(int *)(dest_temp + offset) = transfer.data_int; + wmb();/* memory barriers. */ + } + + udelay(1); +} + +int kbox_read_from_ram(unsigned long offset, unsigned int count, char *data, + enum kbox_section_e section) +{ + unsigned int read_len_total = count; + unsigned long offset_temp = offset; + void __iomem *kbox_section_addr = kbox_get_section_addr(section); + unsigned long kbox_section_len = kbox_get_section_len(section); + unsigned int read_len_real = 0; + + if (!data) { + KBOX_MSG("input NULL point!\n"); + return -EFAULT; + } + + if (!kbox_section_addr || kbox_section_len == 0) { + KBOX_MSG("get kbox_section_addr or kbox_section_len failed!\n"); + return -EFAULT; + } + + if (offset >= kbox_section_len) { + KBOX_MSG("input offset is error!\n"); + return -EFAULT; + } + + if ((offset + count) > kbox_section_len) + read_len_total = (unsigned int)(kbox_section_len - offset); + + while (1) { + unsigned int read_bytes = 0; + + if (read_len_real >= count) + break; + + read_bytes = + (read_len_total > + TEMP_BUF_SIZE) ? TEMP_BUF_SIZE : read_len_total; + + kbox_read_from_pci(data, kbox_section_addr, read_bytes, + offset_temp); + + read_len_total -= read_bytes; + read_len_real += read_bytes; + data += read_bytes; + offset_temp += read_bytes; + } + + return (int)read_len_real; +} + +int kbox_write_to_ram(unsigned long offset, unsigned int count, + const char *data, enum kbox_section_e section) +{ + unsigned int write_len_total = count; + unsigned long offset_temp = offset; + void __iomem *kbox_section_addr = kbox_get_section_addr(section); + unsigned long kbox_section_len = kbox_get_section_len(section); + unsigned int write_len_real = 0; + + if (!data) { + KBOX_MSG("input NULL point!\n"); + return -EFAULT; + } + + if (!kbox_section_addr || kbox_section_len == 0) { + KBOX_MSG("get kbox_section_addr or kbox_section_len failed!\n"); + return -EFAULT; + } + + if (offset >= kbox_section_len) { + KBOX_MSG("input offset is error!\n"); + return -EFAULT; + } + + if ((offset + count) > kbox_section_len) + write_len_total = (unsigned int)(kbox_section_len - offset); + + KBOX_MSG("struct image_super_block_s = %x\n", count); + while (1) { + unsigned int write_bytes = 0; + + if (write_len_real >= count) { + KBOX_MSG("write_len_real = %x\n", write_len_real); + break; + } + KBOX_MSG("write_len_total = %x\n", write_len_total); + + write_bytes = + (write_len_total > + TEMP_BUF_SIZE) ? TEMP_BUF_SIZE : write_len_total; + KBOX_MSG("write_bytes = %x\n", write_bytes); + + kbox_write_to_pci(kbox_section_addr, data, write_bytes, + offset_temp); + + write_len_total -= write_bytes; + write_len_real += write_bytes; + data += write_bytes; + offset_temp += write_bytes; + } + + return (int)write_len_real; +} + +int kbox_memset_ram(unsigned long offset, unsigned int count, + const char set_byte, enum kbox_section_e section) +{ + unsigned int memset_len = count; + void __iomem *kbox_section_addr = kbox_get_section_addr(section); + unsigned long kbox_section_len = kbox_get_section_len(section); + + if (!kbox_section_addr || kbox_section_len == 0) { + KBOX_MSG("get kbox_section_addr or kbox_section_len failed!\n"); + return -EFAULT; + } + + if (offset >= kbox_section_len) { + KBOX_MSG("input offset is error!\n"); + return -EFAULT; + } + + if ((offset + count) > kbox_section_len) + memset_len = (unsigned int)(kbox_section_len - offset); + + kbox_memset_pci(kbox_section_addr, set_byte, memset_len, offset); + + return KBOX_TRUE; +} + +int kbox_read_op(long long offset, unsigned int count, char __user *data, + enum kbox_section_e section) +{ + unsigned int read_bytes = 0; + unsigned int read_len = 0; + unsigned int left_len = count; + char *user_buf = data; + char *temp_buf_char = NULL; + unsigned long offset_tmp = offset; + + if (!data) { + KBOX_MSG("input NULL point!\n"); + return -EFAULT; + } + + if (down_interruptible(&user_sem) != 0) + return KBOX_FALSE; + + temp_buf_char = kmalloc(TEMP_BUF_DATA_SIZE, GFP_KERNEL); + if (!temp_buf_char) { + KBOX_MSG("kmalloc temp_buf_char fail!\n"); + up(&user_sem); + return -ENOMEM; + } + + memset((void *)temp_buf_char, 0, TEMP_BUF_DATA_SIZE); + + while (1) { + if (read_len >= count) + break; + + read_bytes = + (left_len > + TEMP_BUF_DATA_SIZE) ? TEMP_BUF_DATA_SIZE : left_len; + + if (kbox_read_from_ram + (offset_tmp, read_bytes, temp_buf_char, section) < 0) { + KBOX_MSG("kbox_read_from_ram fail!\n"); + break; + } + + if (copy_to_user(user_buf, temp_buf_char, read_bytes)) { + KBOX_MSG("copy_to_user fail!\n"); + break; + } + + left_len -= read_bytes; + read_len += read_bytes; + user_buf += read_bytes; + + offset_tmp += read_bytes; + memset((void *)temp_buf_char, 0, TEMP_BUF_DATA_SIZE); + + msleep(20); + } + + kfree(temp_buf_char); + + up(&user_sem); + + return (int)read_len; +} + +int kbox_write_op(long long offset, unsigned int count, + const char __user *data, enum kbox_section_e section) +{ + unsigned int write_len = 0; + unsigned int left_len = count; + const char *user_buf = data; + char *temp_buf_char = NULL; + unsigned long offset_tmp = offset; + + if (!data) { + KBOX_MSG("input NULL point!\n"); + return -EFAULT; + } + + if (down_interruptible(&user_sem) != 0) + return KBOX_FALSE; + + temp_buf_char = kmalloc(TEMP_BUF_DATA_SIZE, GFP_KERNEL); + if (!temp_buf_char || IS_ERR(temp_buf_char)) { + KBOX_MSG("kmalloc temp_buf_char fail!\n"); + up(&user_sem); + return -ENOMEM; + } + + memset((void *)temp_buf_char, 0, TEMP_BUF_DATA_SIZE); + + while (1) { + unsigned int write_bytes = 0; + + if (write_len >= count) + break; + + write_bytes = + (left_len > + TEMP_BUF_DATA_SIZE) ? TEMP_BUF_DATA_SIZE : left_len; + + if (copy_from_user(temp_buf_char, user_buf, write_bytes)) { + KBOX_MSG("copy_from_user fail!\n"); + break; + } + + if (kbox_write_to_ram + (offset_tmp, write_bytes, temp_buf_char, section) < 0) { + KBOX_MSG("kbox_write_to_ram fail!\n"); + break; + } + + left_len -= write_bytes; + write_len += write_bytes; + user_buf += write_bytes; + + offset_tmp += write_bytes; + memset((void *)temp_buf_char, 0, TEMP_BUF_DATA_SIZE); + + msleep(20); + } + + kfree(temp_buf_char); + + up(&user_sem); + + return (int)write_len; +} + +char kbox_checksum(const char *input_buf, unsigned int len) +{ + unsigned int idx = 0; + char checksum = 0; + + for (idx = 0; idx < len; idx++) + checksum += input_buf[idx]; + + return checksum; +} + +static int kbox_update_super_block(void) +{ + int write_len = 0; + + g_kbox_super_block.checksum = 0; + g_kbox_super_block.checksum = + ~((unsigned char) + kbox_checksum((char *)&g_kbox_super_block, + (unsigned int)sizeof(g_kbox_super_block))) + 1; + write_len = + kbox_write_to_ram(SECTION_KERNEL_OFFSET, + (unsigned int)sizeof(struct image_super_block_s), + (char *)&g_kbox_super_block, KBOX_SECTION_KERNEL); + if (write_len <= 0) { + KBOX_MSG("fail to write superblock data!\n"); + return KBOX_FALSE; + } + + return KBOX_TRUE; +} + +int kbox_read_super_block(void) +{ + int read_len = 0; + + read_len = + kbox_read_from_ram(SECTION_KERNEL_OFFSET, + (unsigned int)sizeof(struct image_super_block_s), + (char *)&g_kbox_super_block, + KBOX_SECTION_KERNEL); + if (read_len != sizeof(struct image_super_block_s)) { + KBOX_MSG("fail to get superblock data!\n"); + return KBOX_FALSE; + } + + return KBOX_TRUE; +} + +static unsigned char kbox_get_byte_order(void) +{ + unsigned short data_short = 0xB22B; + unsigned char *data_char = (unsigned char *)&data_short; + + return (unsigned char)((*data_char == 0xB2) ? KBOX_BIG_ENDIAN : + KBOX_LITTLE_ENDIAN); +} + +int kbox_super_block_init(void) +{ + int ret = 0; + + ret = kbox_read_super_block(); + if (ret != KBOX_TRUE) { + KBOX_MSG("kbox_read_super_block fail!\n"); + return ret; + } + + if (!VALID_IMAGE(&g_kbox_super_block) || + kbox_checksum((char *)&g_kbox_super_block, + (unsigned int)sizeof(g_kbox_super_block)) != 0) { + if (!VALID_IMAGE(&g_kbox_super_block)) { + memset((void *)&g_kbox_super_block, 0x00, + sizeof(struct image_super_block_s)); + } + + g_kbox_super_block.byte_order = kbox_get_byte_order(); + g_kbox_super_block.version = IMAGE_VER; + g_kbox_super_block.magic_flag = IMAGE_MAGIC; + } + + g_kbox_super_block.thread_ctrl_blk.thread_info_len = 0; + + if (kbox_update_super_block() != KBOX_TRUE) { + KBOX_MSG("kbox_update_super_block failed!\n"); + return KBOX_FALSE; + } + + return KBOX_TRUE; +} + +static unsigned char kbox_get_write_slot_num(void) +{ + struct panic_ctrl_block_s *panic_ctrl_block = NULL; + unsigned int idx = 0; + unsigned char slot_num = 0; + unsigned char min_use_nums = 0; + + panic_ctrl_block = g_kbox_super_block.panic_ctrl_blk; + min_use_nums = panic_ctrl_block->use_nums; + + for (idx = 1; idx < SLOT_NUM; idx++) { + panic_ctrl_block++; + if (panic_ctrl_block->use_nums < min_use_nums) { + min_use_nums = panic_ctrl_block->use_nums; + slot_num = (unsigned char)idx; + } + } + + if (min_use_nums == MAX_USE_NUMS) { + panic_ctrl_block = g_kbox_super_block.panic_ctrl_blk; + for (idx = 0; idx < SLOT_NUM; idx++) { + panic_ctrl_block->use_nums = 1; + panic_ctrl_block++; + } + } + + return slot_num; +} + +static unsigned char kbox_get_new_record_number(void) +{ + struct panic_ctrl_block_s *panic_ctrl_block = NULL; + unsigned int idx = 0; + unsigned char max_number = 0; + + panic_ctrl_block = g_kbox_super_block.panic_ctrl_blk; + for (idx = 0; idx < SLOT_NUM; idx++) { + if (panic_ctrl_block->number >= max_number) + max_number = panic_ctrl_block->number; + + panic_ctrl_block++; + } + + return (unsigned char)((max_number + 1) % MAX_RECORD_NO); +} + +int kbox_write_panic_info(const char *input_data, unsigned int data_len) +{ + int write_len = 0; + unsigned int offset = 0; + struct panic_ctrl_block_s *panic_ctrl_block = NULL; + unsigned long time = get_seconds(); + unsigned char slot_num = 0; + unsigned long flags = 0; + + if (!input_data || data_len == 0) { + KBOX_MSG("input parameter error!\n"); + return KBOX_FALSE; + } + + if (data_len > SLOT_LENGTH) + data_len = SLOT_LENGTH; + + spin_lock_irqsave(&g_kbox_super_block_lock, flags); + + slot_num = kbox_get_write_slot_num(); + + panic_ctrl_block = &g_kbox_super_block.panic_ctrl_blk[slot_num]; + panic_ctrl_block->use_nums++; + + panic_ctrl_block->number = kbox_get_new_record_number(); + panic_ctrl_block->len = 0; + panic_ctrl_block->time = (unsigned int)time; + + g_kbox_super_block.panic_nums++; + + spin_unlock_irqrestore(&g_kbox_super_block_lock, flags); + + offset = slot_num * SLOT_LENGTH; + write_len = + kbox_write_to_ram(offset, data_len, input_data, KBOX_SECTION_PANIC); + if (write_len <= 0) { + KBOX_MSG("fail to save panic information!\n"); + return KBOX_FALSE; + } + + spin_lock_irqsave(&g_kbox_super_block_lock, flags); + + panic_ctrl_block->len += (unsigned short)write_len; + + if (kbox_update_super_block() != KBOX_TRUE) { + KBOX_MSG("kbox_update_super_block failed!\n"); + spin_unlock_irqrestore(&g_kbox_super_block_lock, flags); + return KBOX_FALSE; + } + + spin_unlock_irqrestore(&g_kbox_super_block_lock, flags); + + return KBOX_TRUE; +} + +int kbox_write_thread_info(const char *input_data, unsigned int data_len) +{ + int write_len = 0; + unsigned int offset = 0; + unsigned long flags = 0; + unsigned int date_len_tmp = data_len; + + if (!input_data || date_len_tmp == 0) { + KBOX_MSG("input parameter error!\n"); + return KBOX_FALSE; + } + + spin_lock_irqsave(&g_kbox_super_block_lock, flags); + + offset = g_kbox_super_block.thread_ctrl_blk.thread_info_len; + write_len = + kbox_write_to_ram(offset, date_len_tmp, input_data, + KBOX_SECTION_THREAD); + if (write_len <= 0) { + KBOX_MSG("fail to save thread information!\n"); + spin_unlock_irqrestore(&g_kbox_super_block_lock, flags); + return KBOX_FALSE; + } + + g_kbox_super_block.thread_ctrl_blk.thread_info_len += write_len; + + if (kbox_update_super_block() != KBOX_TRUE) { + KBOX_MSG("kbox_update_super_block failed!\n"); + spin_unlock_irqrestore(&g_kbox_super_block_lock, flags); + return KBOX_FALSE; + } + + spin_unlock_irqrestore(&g_kbox_super_block_lock, flags); + + return KBOX_TRUE; +} + +int kbox_read_printk_info(char *input_data, + struct printk_ctrl_block_tmp_s *printk_ctrl_block_tmp) +{ + int read_len = 0; + int printk_region = printk_ctrl_block_tmp->printk_region; + unsigned int len = 0; + + if (!input_data) { + KBOX_MSG("input parameter error!\n"); + return KBOX_FALSE; + } + + len = g_kbox_super_block.printk_ctrl_blk[printk_region].len; + if (len <= 0) { + printk_ctrl_block_tmp->end = 0; + printk_ctrl_block_tmp->valid_len = 0; + return KBOX_TRUE; + } + + read_len = + kbox_read_from_ram(0, len, input_data, + printk_ctrl_block_tmp->section); + if (read_len < 0) { + KBOX_MSG("fail to read printk information!(1)\n"); + return KBOX_FALSE; + } + + printk_ctrl_block_tmp->end = len; + printk_ctrl_block_tmp->valid_len = len; + + return KBOX_TRUE; +} + +int kbox_write_printk_info(const char *input_data, + struct printk_ctrl_block_tmp_s * + printk_ctrl_block_tmp) +{ + int write_len = 0; + int printk_region = printk_ctrl_block_tmp->printk_region; + unsigned long flags = 0; + unsigned int len = 0; + + if (!input_data) { + KBOX_MSG("input parameter error!\n"); + return KBOX_FALSE; + } + + len = printk_ctrl_block_tmp->valid_len; + write_len = + kbox_write_to_ram(0, len, input_data, + printk_ctrl_block_tmp->section); + if (write_len <= 0) { + KBOX_MSG("fail to save printk information!(1)\n"); + return KBOX_FALSE; + } + + spin_lock_irqsave(&g_kbox_super_block_lock, flags); + + g_kbox_super_block.printk_ctrl_blk[printk_region].len = len; + + if (kbox_update_super_block() != KBOX_TRUE) { + KBOX_MSG("kbox_update_super_block failed!\n"); + spin_unlock_irqrestore(&g_kbox_super_block_lock, flags); + return KBOX_FALSE; + } + + spin_unlock_irqrestore(&g_kbox_super_block_lock, flags); + + return KBOX_TRUE; +} + +static int kbox_read_region(unsigned long arg) +{ + unsigned int read_len = 0; + struct kbox_region_arg_s region_arg = { }; + + if (copy_from_user + ((void *)®ion_arg, (void __user *)arg, + sizeof(struct kbox_region_arg_s))) { + KBOX_MSG("fail to copy_from_user!\n"); + return KBOX_FALSE; + } + + read_len = kbox_read_op((long long)region_arg.offset, region_arg.count, + (char __user *)region_arg.data, + KBOX_SECTION_ALL); + if (read_len <= 0) { + KBOX_MSG("fail to get kbox data!\n"); + return KBOX_FALSE; + } + + if (copy_to_user + ((void __user *)arg, (void *)®ion_arg, + sizeof(struct kbox_region_arg_s))) { + KBOX_MSG("fail to copy_to_user!\n"); + return KBOX_FALSE; + } + + return KBOX_TRUE; +} + +static int kbox_writer_region(unsigned long arg) +{ + unsigned int write_len = 0; + struct kbox_region_arg_s region_arg = { }; + + if (copy_from_user + ((void *)®ion_arg, (void __user *)arg, + sizeof(struct kbox_region_arg_s))) { + KBOX_MSG("fail to copy_from_user!\n"); + return KBOX_FALSE; + } + + write_len = kbox_write_op((long long)region_arg.offset, + region_arg.count, + (char __user *)region_arg.data, + KBOX_SECTION_ALL); + if (write_len <= 0) { + KBOX_MSG("fail to write kbox data!\n"); + return KBOX_FALSE; + } + + if (copy_to_user + ((void __user *)arg, (void *)®ion_arg, + sizeof(struct kbox_region_arg_s))) { + KBOX_MSG("fail to copy_to_user!\n"); + return KBOX_FALSE; + } + + return KBOX_TRUE; +} + +int kbox_clear_region(enum kbox_section_e section) +{ + int ret = KBOX_TRUE; + unsigned long kbox_section_len = kbox_get_section_len(section); + + if (kbox_section_len == 0) { + KBOX_MSG("get kbox_section_len failed!\n"); + return -EFAULT; + } + + ret = kbox_memset_ram(0, (unsigned int)kbox_section_len, 0, section); + if (ret != KBOX_TRUE) { + KBOX_MSG("kbox_memset_ram failed!\n"); + return -EFAULT; + } + + return KBOX_TRUE; +} + +static int kbox_get_image_len(unsigned long arg) +{ + unsigned long __user *ptr = (unsigned long __user *)arg; + unsigned long kbox_len = 0; + + kbox_len = kbox_get_section_len(KBOX_SECTION_ALL); + if (kbox_len == 0) { + KBOX_MSG("kbox_get_section_len section all fail!\n"); + return -EFAULT; + } + + return put_user(kbox_len, ptr); +} + +static int kbox_get_user_region_len(unsigned long arg) +{ + unsigned long __user *ptr = (unsigned long __user *)arg; + unsigned long kbox_user_region_len = 0; + + kbox_user_region_len = kbox_get_section_len(KBOX_SECTION_USER); + if (kbox_user_region_len == 0) { + KBOX_MSG("kbox_get_section_len section user fail!\n"); + return -EFAULT; + } + + return put_user(kbox_user_region_len, ptr); +} + +static int kbox_ioctl_verify_cmd(unsigned int cmd, unsigned long arg) +{ + if (arg == 0 || (_IOC_TYPE(cmd) != KBOX_IOC_MAGIC)) + return KBOX_FALSE; + + if (_IOC_NR(cmd) > KBOX_IOC_MAXNR) + return KBOX_FALSE; + + if (!capable(CAP_SYS_ADMIN)) { + KBOX_MSG("permit error\n"); + return KBOX_FALSE; + } + + return KBOX_TRUE; +} + +int kbox_ioctl_detail(unsigned int cmd, unsigned long arg) +{ + if (kbox_ioctl_verify_cmd(cmd, arg) != KBOX_TRUE) + return -EFAULT; + + switch (cmd) { + case GET_KBOX_TOTAL_LEN: + return kbox_get_image_len(arg); + + case GET_KBOX_REGION_USER_LEN: + return kbox_get_user_region_len(arg); + + case KBOX_REGION_READ: + return kbox_read_region(arg); + + case KBOX_REGION_WRITE: + return kbox_writer_region(arg); + + case CLEAR_KBOX_REGION_ALL: + return kbox_clear_region(KBOX_SECTION_ALL); + + case CLEAR_KBOX_REGION_USER: + return kbox_clear_region(KBOX_SECTION_USER); + + default: + return -ENOTTY; + } +} + +int kbox_mmap_ram(struct file *pfile, struct vm_area_struct *vma, + enum kbox_section_e section) +{ + unsigned long kbox_section_phy_addr = + kbox_get_section_phy_addr(section); + unsigned long kbox_section_len = kbox_get_section_len(section); + unsigned long offset = 0; + unsigned long length = 0; + unsigned long vm_size = 0; + int ret = 0; + + UNUSED(pfile); + + if (kbox_section_phy_addr == 0 || kbox_section_len == 0) { + KBOX_MSG + ("get kbox_section_phy_addr or kbox_section_len failed!\n"); + return -EFAULT; + } + + offset = vma->vm_pgoff << PAGE_SHIFT; + vm_size = vma->vm_end - vma->vm_start; + + if (offset >= kbox_section_len) { + KBOX_MSG("vma offset is invalid!\n"); + return -ESPIPE; + } + + if (vma->vm_flags & VM_LOCKED) { + KBOX_MSG("vma is locked!\n"); + return -EPERM; + } + + length = kbox_section_len - offset; + if (vm_size > length) { + KBOX_MSG("vm_size is invalid!\n"); + return -ENOSPC; + } + + vma->vm_flags |= VM_RESERVED; + vma->vm_flags |= VM_IO; + + ret = remap_pfn_range(vma, + vma->vm_start, + (unsigned long)(kbox_section_phy_addr >> + PAGE_SHIFT), vm_size, + vma->vm_page_prot); + if (ret) { + KBOX_MSG("remap_pfn_range failed! ret = %d\n", ret); + return -EAGAIN; + } + + return 0; +} diff --git a/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_ram_op.h b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_ram_op.h new file mode 100644 index 0000000000000000000000000000000000000000..4a92c87de139a0ce9503de598ef3dd52698a6974 --- /dev/null +++ b/drivers/net/ethernet/huawei/bma/kbox_drv/kbox_ram_op.h @@ -0,0 +1,77 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Huawei iBMA driver. + * Copyright (c) 2017, Huawei Technologies Co., Ltd. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef _KBOX_RAM_OP_H_ +#define _KBOX_RAM_OP_H_ + +#include +#include +#include "kbox_printk.h" + +#define KBOX_IOC_MAGIC (0xB2) + +#define GET_KBOX_TOTAL_LEN _IOR(KBOX_IOC_MAGIC, 0, unsigned long) + +#define GET_KBOX_REGION_USER_LEN _IOR(KBOX_IOC_MAGIC, 1, unsigned long) + +#define CLEAR_KBOX_REGION_ALL _IO(KBOX_IOC_MAGIC, 2) + +#define CLEAR_KBOX_REGION_USER _IO(KBOX_IOC_MAGIC, 3) + +#define KBOX_REGION_READ _IOR(KBOX_IOC_MAGIC, 4, struct kbox_region_arg_s) + +#define KBOX_REGION_WRITE _IOW(KBOX_IOC_MAGIC, 5, struct kbox_region_arg_s) + +#define KBOX_IOC_MAXNR 6 + +#define TEMP_BUF_SIZE (32 * 1024) +#define TEMP_BUF_DATA_SIZE (128 * 1024) +#define KBOX_RW_UNIT 4 + +struct kbox_region_arg_s { + unsigned long offset; + unsigned int count; + char *data; +}; + +enum kbox_section_e; + +int kbox_read_op(long long offset, unsigned int count, char __user *data, + enum kbox_section_e section); +int kbox_write_op(long long offset, unsigned int count, + const char __user *data, enum kbox_section_e section); +int kbox_read_super_block(void); +int kbox_super_block_init(void); +int kbox_write_panic_info(const char *input_data, unsigned int data_len); +int kbox_write_thread_info(const char *input_data, unsigned int data_len); +int kbox_write_printk_info(const char *input_data, + struct printk_ctrl_block_tmp_s + *printk_ctrl_block_tmp); +int kbox_read_printk_info(char *input_data, + struct printk_ctrl_block_tmp_s + *printk_ctrl_block_tmp); +int kbox_ioctl_detail(unsigned int cmd, unsigned long arg); +int kbox_mmap_ram(struct file *file, struct vm_area_struct *vma, + enum kbox_section_e section); +char kbox_checksum(const char *input_buf, unsigned int len); +int kbox_write_to_ram(unsigned long offset, unsigned int count, + const char *data, enum kbox_section_e section); +int kbox_read_from_ram(unsigned long offset, unsigned int count, char *data, + enum kbox_section_e section); +int kbox_clear_region(enum kbox_section_e section); +int kbox_memset_ram(unsigned long offset, unsigned int count, + const char set_byte, enum kbox_section_e section); + +#endif