From 608b286d1ddf38a7ceb624d2b689af095816d91c Mon Sep 17 00:00:00 2001 From: Jeremy Kerr Date: Thu, 6 Nov 2014 11:38:27 +0800 Subject: powerpc/powernv: Add OPAL IPMI interface Recent OPAL firmare adds a couple of functions to send and receive IPMI messages: https://github.com/open-power/skiboot/commit/b2a374da This change updates the token list and wrappers to suit, and adds the platform devices for any IPMI interfaces. Signed-off-by: Jeremy Kerr Signed-off-by: Michael Ellerman --- arch/powerpc/include/asm/opal.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'arch/powerpc/include/asm/opal.h') diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h index 9124b0ede1fc..5d073e50cac8 100644 --- a/arch/powerpc/include/asm/opal.h +++ b/arch/powerpc/include/asm/opal.h @@ -154,6 +154,8 @@ struct opal_sg_list { #define OPAL_HANDLE_HMI 98 #define OPAL_REGISTER_DUMP_REGION 101 #define OPAL_UNREGISTER_DUMP_REGION 102 +#define OPAL_IPMI_SEND 107 +#define OPAL_IPMI_RECV 108 #ifndef __ASSEMBLY__ @@ -452,6 +454,17 @@ struct opal_msg { __be64 params[8]; }; +enum { + OPAL_IPMI_MSG_FORMAT_VERSION_1 = 1, +}; + +struct opal_ipmi_msg { + uint8_t version; + uint8_t netfn; + uint8_t cmd; + uint8_t data[]; +}; + struct opal_machine_check_event { enum OpalMCE_Version version:8; /* 0x00 */ uint8_t in_use; /* 0x01 */ @@ -963,6 +976,10 @@ int64_t opal_handle_hmi(void); int64_t opal_register_dump_region(uint32_t id, uint64_t start, uint64_t end); int64_t opal_unregister_dump_region(uint32_t id); int64_t opal_pci_set_phb_cxl_mode(uint64_t phb_id, uint64_t mode, uint64_t pe_number); +int64_t opal_ipmi_send(uint64_t interface, struct opal_ipmi_msg *msg, + uint64_t msg_len); +int64_t opal_ipmi_recv(uint64_t interface, struct opal_ipmi_msg *msg, + uint64_t *msg_len); /* Internal functions */ extern int early_init_dt_scan_opal(unsigned long node, const char *uname, -- cgit v1.2.3-70-g09d2 From 16b1d26e77b142546e2b9b6dc3b5aa5c44ae3b77 Mon Sep 17 00:00:00 2001 From: Neelesh Gupta Date: Tue, 14 Oct 2014 14:08:36 +0530 Subject: rtc/tpo: Driver to support rtc and wakeup on PowerNV platform The patch implements the OPAL rtc driver that binds with the rtc driver subsystem. The driver uses the platform device infrastructure to probe the rtc device and register it to rtc class framework. The 'wakeup' is supported depending upon the property 'has-tpo' present in the OF node. It provides a way to load the generic rtc driver in in the absence of an OPAL driver. The patch also moves the existing OPAL rtc get/set time interfaces to the new driver and exposes the necessary OPAL calls using EXPORT_SYMBOL_GPL. Test results: ------------- Host: [root@tul169p1 ~]# ls -l /sys/class/rtc/ total 0 lrwxrwxrwx 1 root root 0 Oct 14 03:07 rtc0 -> ../../devices/opal-rtc/rtc/rtc0 [root@tul169p1 ~]# cat /sys/devices/opal-rtc/rtc/rtc0/time 08:10:07 [root@tul169p1 ~]# echo `date '+%s' -d '+ 2 minutes'` > /sys/class/rtc/rtc0/wakealarm [root@tul169p1 ~]# cat /sys/class/rtc/rtc0/wakealarm 1413274345 [root@tul169p1 ~]# FSP: $ smgr mfgState standby $ rtim timeofday System time is valid: 2014/10/14 08:12:04.225115 $ smgr mfgState ipling $ CC: devicetree@vger.kernel.org CC: tglx@linutronix.de CC: rtc-linux@googlegroups.com CC: a.zummo@towertech.it Signed-off-by: Neelesh Gupta Signed-off-by: Michael Ellerman --- Documentation/devicetree/bindings/rtc/rtc-opal.txt | 16 ++ arch/powerpc/include/asm/opal.h | 7 +- arch/powerpc/kernel/time.c | 1 + arch/powerpc/platforms/powernv/opal-async.c | 3 + arch/powerpc/platforms/powernv/opal-rtc.c | 65 ++--- arch/powerpc/platforms/powernv/opal-wrappers.S | 2 + arch/powerpc/platforms/powernv/opal.c | 6 + arch/powerpc/platforms/powernv/setup.c | 2 - drivers/rtc/Kconfig | 11 + drivers/rtc/Makefile | 1 + drivers/rtc/rtc-opal.c | 261 +++++++++++++++++++++ 11 files changed, 325 insertions(+), 50 deletions(-) create mode 100644 Documentation/devicetree/bindings/rtc/rtc-opal.txt create mode 100644 drivers/rtc/rtc-opal.c (limited to 'arch/powerpc/include/asm/opal.h') diff --git a/Documentation/devicetree/bindings/rtc/rtc-opal.txt b/Documentation/devicetree/bindings/rtc/rtc-opal.txt new file mode 100644 index 000000000000..af87e5ecac54 --- /dev/null +++ b/Documentation/devicetree/bindings/rtc/rtc-opal.txt @@ -0,0 +1,16 @@ +IBM OPAL real-time clock +------------------------ + +Required properties: +- comapatible: Should be "ibm,opal-rtc" + +Optional properties: +- has-tpo: Decides if the wakeup is supported or not. + +Example: + rtc { + compatible = "ibm,opal-rtc"; + has-tpo; + phandle = <0x10000029>; + linux,phandle = <0x10000029>; + }; diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h index 5d073e50cac8..60250e2d1f0d 100644 --- a/arch/powerpc/include/asm/opal.h +++ b/arch/powerpc/include/asm/opal.h @@ -154,6 +154,8 @@ struct opal_sg_list { #define OPAL_HANDLE_HMI 98 #define OPAL_REGISTER_DUMP_REGION 101 #define OPAL_UNREGISTER_DUMP_REGION 102 +#define OPAL_WRITE_TPO 103 +#define OPAL_READ_TPO 104 #define OPAL_IPMI_SEND 107 #define OPAL_IPMI_RECV 108 @@ -832,6 +834,9 @@ int64_t opal_rtc_read(__be32 *year_month_day, __be64 *hour_minute_second_millisecond); int64_t opal_rtc_write(uint32_t year_month_day, uint64_t hour_minute_second_millisecond); +int64_t opal_tpo_read(uint64_t token, __be32 *year_mon_day, __be32 *hour_min); +int64_t opal_tpo_write(uint64_t token, uint32_t year_mon_day, + uint32_t hour_min); int64_t opal_cec_power_down(uint64_t request); int64_t opal_cec_reboot(void); int64_t opal_read_nvram(uint64_t buffer, uint64_t size, uint64_t offset); @@ -1009,8 +1014,6 @@ extern int opal_async_wait_response(uint64_t token, struct opal_msg *msg); extern int opal_get_sensor_data(u32 sensor_hndl, u32 *sensor_data); struct rtc_time; -extern int opal_set_rtc_time(struct rtc_time *tm); -extern void opal_get_rtc_time(struct rtc_time *tm); extern unsigned long opal_get_boot_time(void); extern void opal_nvram_init(void); extern void opal_flash_init(void); diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index 9f8ea617ff2c..fa7c4f12104f 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -989,6 +989,7 @@ void GregorianDay(struct rtc_time * tm) tm->tm_wday = day % 7; } +EXPORT_SYMBOL_GPL(GregorianDay); void to_tm(int tim, struct rtc_time * tm) { diff --git a/arch/powerpc/platforms/powernv/opal-async.c b/arch/powerpc/platforms/powernv/opal-async.c index e462ab947d16..693b6cdac691 100644 --- a/arch/powerpc/platforms/powernv/opal-async.c +++ b/arch/powerpc/platforms/powernv/opal-async.c @@ -71,6 +71,7 @@ int opal_async_get_token_interruptible(void) return token; } +EXPORT_SYMBOL_GPL(opal_async_get_token_interruptible); int __opal_async_release_token(int token) { @@ -102,6 +103,7 @@ int opal_async_release_token(int token) return 0; } +EXPORT_SYMBOL_GPL(opal_async_release_token); int opal_async_wait_response(uint64_t token, struct opal_msg *msg) { @@ -120,6 +122,7 @@ int opal_async_wait_response(uint64_t token, struct opal_msg *msg) return 0; } +EXPORT_SYMBOL_GPL(opal_async_wait_response); static int opal_async_comp_event(struct notifier_block *nb, unsigned long msg_type, void *msg) diff --git a/arch/powerpc/platforms/powernv/opal-rtc.c b/arch/powerpc/platforms/powernv/opal-rtc.c index 499707ddaa9c..37dbee15769f 100644 --- a/arch/powerpc/platforms/powernv/opal-rtc.c +++ b/arch/powerpc/platforms/powernv/opal-rtc.c @@ -15,6 +15,8 @@ #include #include #include +#include +#include #include #include @@ -43,7 +45,7 @@ unsigned long __init opal_get_boot_time(void) long rc = OPAL_BUSY; if (!opal_check_token(OPAL_RTC_READ)) - goto out; + return 0; while (rc == OPAL_BUSY || rc == OPAL_BUSY_EVENT) { rc = opal_rtc_read(&__y_m_d, &__h_m_s_ms); @@ -53,62 +55,33 @@ unsigned long __init opal_get_boot_time(void) mdelay(10); } if (rc != OPAL_SUCCESS) - goto out; + return 0; y_m_d = be32_to_cpu(__y_m_d); h_m_s_ms = be64_to_cpu(__h_m_s_ms); opal_to_tm(y_m_d, h_m_s_ms, &tm); return mktime(tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec); -out: - ppc_md.get_rtc_time = NULL; - ppc_md.set_rtc_time = NULL; - return 0; } -void opal_get_rtc_time(struct rtc_time *tm) +static __init int opal_time_init(void) { - long rc = OPAL_BUSY; - u32 y_m_d; - u64 h_m_s_ms; - __be32 __y_m_d; - __be64 __h_m_s_ms; + struct platform_device *pdev; + struct device_node *rtc; - while (rc == OPAL_BUSY || rc == OPAL_BUSY_EVENT) { - rc = opal_rtc_read(&__y_m_d, &__h_m_s_ms); - if (rc == OPAL_BUSY_EVENT) - opal_poll_events(NULL); + rtc = of_find_node_by_path("/ibm,opal/rtc"); + if (rtc) { + pdev = of_platform_device_create(rtc, "opal-rtc", NULL); + of_node_put(rtc); + } else { + if (opal_check_token(OPAL_RTC_READ) || + opal_check_token(OPAL_READ_TPO)) + pdev = platform_device_register_simple("opal-rtc", -1, + NULL, 0); else - mdelay(10); + return -ENODEV; } - if (rc != OPAL_SUCCESS) - return; - y_m_d = be32_to_cpu(__y_m_d); - h_m_s_ms = be64_to_cpu(__h_m_s_ms); - opal_to_tm(y_m_d, h_m_s_ms, tm); -} - -int opal_set_rtc_time(struct rtc_time *tm) -{ - long rc = OPAL_BUSY; - u32 y_m_d = 0; - u64 h_m_s_ms = 0; - - y_m_d |= ((u32)bin2bcd((tm->tm_year + 1900) / 100)) << 24; - y_m_d |= ((u32)bin2bcd((tm->tm_year + 1900) % 100)) << 16; - y_m_d |= ((u32)bin2bcd((tm->tm_mon + 1))) << 8; - y_m_d |= ((u32)bin2bcd(tm->tm_mday)); - - h_m_s_ms |= ((u64)bin2bcd(tm->tm_hour)) << 56; - h_m_s_ms |= ((u64)bin2bcd(tm->tm_min)) << 48; - h_m_s_ms |= ((u64)bin2bcd(tm->tm_sec)) << 40; - while (rc == OPAL_BUSY || rc == OPAL_BUSY_EVENT) { - rc = opal_rtc_write(y_m_d, h_m_s_ms); - if (rc == OPAL_BUSY_EVENT) - opal_poll_events(NULL); - else - mdelay(10); - } - return rc == OPAL_SUCCESS ? 0 : -EIO; + return PTR_ERR_OR_ZERO(pdev); } +machine_subsys_initcall(powernv, opal_time_init); diff --git a/arch/powerpc/platforms/powernv/opal-wrappers.S b/arch/powerpc/platforms/powernv/opal-wrappers.S index 59978af9babe..0a299be588af 100644 --- a/arch/powerpc/platforms/powernv/opal-wrappers.S +++ b/arch/powerpc/platforms/powernv/opal-wrappers.S @@ -250,5 +250,7 @@ OPAL_CALL(opal_handle_hmi, OPAL_HANDLE_HMI); OPAL_CALL(opal_register_dump_region, OPAL_REGISTER_DUMP_REGION); OPAL_CALL(opal_unregister_dump_region, OPAL_UNREGISTER_DUMP_REGION); OPAL_CALL(opal_pci_set_phb_cxl_mode, OPAL_PCI_SET_PHB_CXL_MODE); +OPAL_CALL(opal_tpo_write, OPAL_WRITE_TPO); +OPAL_CALL(opal_tpo_read, OPAL_READ_TPO); OPAL_CALL(opal_ipmi_send, OPAL_IPMI_SEND); OPAL_CALL(opal_ipmi_recv, OPAL_IPMI_RECV); diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c index 0297702e8ae9..a1c37f9d60d2 100644 --- a/arch/powerpc/platforms/powernv/opal.c +++ b/arch/powerpc/platforms/powernv/opal.c @@ -819,3 +819,9 @@ void opal_free_sg_list(struct opal_sg_list *sg) sg = NULL; } } + +EXPORT_SYMBOL_GPL(opal_poll_events); +EXPORT_SYMBOL_GPL(opal_rtc_read); +EXPORT_SYMBOL_GPL(opal_rtc_write); +EXPORT_SYMBOL_GPL(opal_tpo_read); +EXPORT_SYMBOL_GPL(opal_tpo_write); diff --git a/arch/powerpc/platforms/powernv/setup.c b/arch/powerpc/platforms/powernv/setup.c index 941831d67cb2..30b1c3e298a6 100644 --- a/arch/powerpc/platforms/powernv/setup.c +++ b/arch/powerpc/platforms/powernv/setup.c @@ -265,8 +265,6 @@ static unsigned long pnv_memory_block_size(void) static void __init pnv_setup_machdep_opal(void) { ppc_md.get_boot_time = opal_get_boot_time; - ppc_md.get_rtc_time = opal_get_rtc_time; - ppc_md.set_rtc_time = opal_set_rtc_time; ppc_md.restart = pnv_restart; pm_power_off = pnv_power_off; ppc_md.halt = pnv_halt; diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig index 6dd12ddbabc6..c8f0ec7464ce 100644 --- a/drivers/rtc/Kconfig +++ b/drivers/rtc/Kconfig @@ -979,6 +979,17 @@ config RTC_DRV_NUC900 If you say yes here you get support for the RTC subsystem of the NUC910/NUC920 used in embedded systems. +config RTC_DRV_OPAL + tristate "IBM OPAL RTC driver" + depends on PPC_POWERNV + default y + help + If you say yes here you get support for the PowerNV platform RTC + driver based on OPAL interfaces. + + This driver can also be built as a module. If so, the module + will be called rtc-opal. + comment "on-CPU RTC drivers" config RTC_DRV_DAVINCI diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile index b188323c096a..c8ef3e1e6ccd 100644 --- a/drivers/rtc/Makefile +++ b/drivers/rtc/Makefile @@ -92,6 +92,7 @@ obj-$(CONFIG_RTC_DRV_MSM6242) += rtc-msm6242.o obj-$(CONFIG_RTC_DRV_MPC5121) += rtc-mpc5121.o obj-$(CONFIG_RTC_DRV_MV) += rtc-mv.o obj-$(CONFIG_RTC_DRV_NUC900) += rtc-nuc900.o +obj-$(CONFIG_RTC_DRV_OPAL) += rtc-opal.o obj-$(CONFIG_RTC_DRV_OMAP) += rtc-omap.o obj-$(CONFIG_RTC_DRV_PALMAS) += rtc-palmas.o obj-$(CONFIG_RTC_DRV_PCAP) += rtc-pcap.o diff --git a/drivers/rtc/rtc-opal.c b/drivers/rtc/rtc-opal.c new file mode 100644 index 000000000000..95f652165fe9 --- /dev/null +++ b/drivers/rtc/rtc-opal.c @@ -0,0 +1,261 @@ +/* + * IBM OPAL RTC driver + * Copyright (C) 2014 IBM + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program. + */ + +#define DRVNAME "rtc-opal" +#define pr_fmt(fmt) DRVNAME ": " fmt + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static void opal_to_tm(u32 y_m_d, u64 h_m_s_ms, struct rtc_time *tm) +{ + tm->tm_year = ((bcd2bin(y_m_d >> 24) * 100) + + bcd2bin((y_m_d >> 16) & 0xff)) - 1900; + tm->tm_mon = bcd2bin((y_m_d >> 8) & 0xff) - 1; + tm->tm_mday = bcd2bin(y_m_d & 0xff); + tm->tm_hour = bcd2bin((h_m_s_ms >> 56) & 0xff); + tm->tm_min = bcd2bin((h_m_s_ms >> 48) & 0xff); + tm->tm_sec = bcd2bin((h_m_s_ms >> 40) & 0xff); + + GregorianDay(tm); +} + +static void tm_to_opal(struct rtc_time *tm, u32 *y_m_d, u64 *h_m_s_ms) +{ + *y_m_d |= ((u32)bin2bcd((tm->tm_year + 1900) / 100)) << 24; + *y_m_d |= ((u32)bin2bcd((tm->tm_year + 1900) % 100)) << 16; + *y_m_d |= ((u32)bin2bcd((tm->tm_mon + 1))) << 8; + *y_m_d |= ((u32)bin2bcd(tm->tm_mday)); + + *h_m_s_ms |= ((u64)bin2bcd(tm->tm_hour)) << 56; + *h_m_s_ms |= ((u64)bin2bcd(tm->tm_min)) << 48; + *h_m_s_ms |= ((u64)bin2bcd(tm->tm_sec)) << 40; +} + +static int opal_get_rtc_time(struct device *dev, struct rtc_time *tm) +{ + long rc = OPAL_BUSY; + u32 y_m_d; + u64 h_m_s_ms; + __be32 __y_m_d; + __be64 __h_m_s_ms; + + while (rc == OPAL_BUSY || rc == OPAL_BUSY_EVENT) { + rc = opal_rtc_read(&__y_m_d, &__h_m_s_ms); + if (rc == OPAL_BUSY_EVENT) + opal_poll_events(NULL); + else + msleep(10); + } + + if (rc != OPAL_SUCCESS) + return -EIO; + + y_m_d = be32_to_cpu(__y_m_d); + h_m_s_ms = be64_to_cpu(__h_m_s_ms); + opal_to_tm(y_m_d, h_m_s_ms, tm); + + return 0; +} + +static int opal_set_rtc_time(struct device *dev, struct rtc_time *tm) +{ + long rc = OPAL_BUSY; + u32 y_m_d = 0; + u64 h_m_s_ms = 0; + + tm_to_opal(tm, &y_m_d, &h_m_s_ms); + while (rc == OPAL_BUSY || rc == OPAL_BUSY_EVENT) { + rc = opal_rtc_write(y_m_d, h_m_s_ms); + if (rc == OPAL_BUSY_EVENT) + opal_poll_events(NULL); + else + msleep(10); + } + + return rc == OPAL_SUCCESS ? 0 : -EIO; +} + +/* + * TPO Timed Power-On + * + * TPO get/set OPAL calls care about the hour and min and to make it consistent + * with the rtc utility time conversion functions, we use the 'u64' to store + * its value and perform bit shift by 32 before use.. + */ +static int opal_get_tpo_time(struct device *dev, struct rtc_wkalrm *alarm) +{ + __be32 __y_m_d, __h_m; + struct opal_msg msg; + int rc, token; + u64 h_m_s_ms; + u32 y_m_d; + + token = opal_async_get_token_interruptible(); + if (token < 0) { + if (token != -ERESTARTSYS) + pr_err("Failed to get the async token\n"); + + return token; + } + + rc = opal_tpo_read(token, &__y_m_d, &__h_m); + if (rc != OPAL_ASYNC_COMPLETION) { + rc = -EIO; + goto exit; + } + + rc = opal_async_wait_response(token, &msg); + if (rc) { + rc = -EIO; + goto exit; + } + + rc = be64_to_cpu(msg.params[1]); + if (rc != OPAL_SUCCESS) { + rc = -EIO; + goto exit; + } + + y_m_d = be32_to_cpu(__y_m_d); + h_m_s_ms = ((u64)be32_to_cpu(__h_m) << 32); + opal_to_tm(y_m_d, h_m_s_ms, &alarm->time); + +exit: + opal_async_release_token(token); + return rc; +} + +/* Set Timed Power-On */ +static int opal_set_tpo_time(struct device *dev, struct rtc_wkalrm *alarm) +{ + u64 h_m_s_ms = 0, token; + struct opal_msg msg; + u32 y_m_d = 0; + int rc; + + tm_to_opal(&alarm->time, &y_m_d, &h_m_s_ms); + + token = opal_async_get_token_interruptible(); + if (token < 0) { + if (token != -ERESTARTSYS) + pr_err("Failed to get the async token\n"); + + return token; + } + + /* TPO, we care about hour and minute */ + rc = opal_tpo_write(token, y_m_d, + (u32)((h_m_s_ms >> 32) & 0xffff0000)); + if (rc != OPAL_ASYNC_COMPLETION) { + rc = -EIO; + goto exit; + } + + rc = opal_async_wait_response(token, &msg); + if (rc) { + rc = -EIO; + goto exit; + } + + rc = be64_to_cpu(msg.params[1]); + if (rc != OPAL_SUCCESS) + rc = -EIO; + +exit: + opal_async_release_token(token); + return rc; +} + +static const struct rtc_class_ops opal_rtc_ops = { + .read_time = opal_get_rtc_time, + .set_time = opal_set_rtc_time, + .read_alarm = opal_get_tpo_time, + .set_alarm = opal_set_tpo_time, +}; + +static int opal_rtc_probe(struct platform_device *pdev) +{ + struct rtc_device *rtc; + + if (pdev->dev.of_node && of_get_property(pdev->dev.of_node, "has-tpo", + NULL)) + device_set_wakeup_capable(&pdev->dev, true); + + rtc = devm_rtc_device_register(&pdev->dev, DRVNAME, &opal_rtc_ops, + THIS_MODULE); + if (IS_ERR(rtc)) + return PTR_ERR(rtc); + + rtc->uie_unsupported = 1; + + return 0; +} + +static const struct of_device_id opal_rtc_match[] = { + { + .compatible = "ibm,opal-rtc", + }, + { } +}; +MODULE_DEVICE_TABLE(of, opal_rtc_match); + +static const struct platform_device_id opal_rtc_driver_ids[] = { + { + .name = "opal-rtc", + }, + { } +}; +MODULE_DEVICE_TABLE(platform, opal_rtc_driver_ids); + +static struct platform_driver opal_rtc_driver = { + .probe = opal_rtc_probe, + .id_table = opal_rtc_driver_ids, + .driver = { + .name = DRVNAME, + .owner = THIS_MODULE, + .of_match_table = opal_rtc_match, + }, +}; + +static int __init opal_rtc_init(void) +{ + if (!firmware_has_feature(FW_FEATURE_OPAL)) + return -ENODEV; + + return platform_driver_register(&opal_rtc_driver); +} + +static void __exit opal_rtc_exit(void) +{ + platform_driver_unregister(&opal_rtc_driver); +} + +MODULE_AUTHOR("Neelesh Gupta "); +MODULE_DESCRIPTION("IBM OPAL RTC driver"); +MODULE_LICENSE("GPL"); + +module_init(opal_rtc_init); +module_exit(opal_rtc_exit); -- cgit v1.2.3-70-g09d2 From 6d626c5ea3d8411cc2a72d7cabe70f01dfc32d1d Mon Sep 17 00:00:00 2001 From: Mahesh Salgaonkar Date: Mon, 24 Nov 2014 21:59:26 +0530 Subject: powerpc/powernv: Cleanup unused MCE definitions/declarations. Cleanup OpalMCE_* definitions/declarations and other related code which is not used anymore. Signed-off-by: Mahesh Salgaonkar Acked-by: Benjamin Herrrenschmidt Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/include/asm/opal.h | 104 ---------------------------------- arch/powerpc/include/asm/paca.h | 7 --- arch/powerpc/kernel/asm-offsets.c | 7 --- arch/powerpc/kernel/exceptions-64s.S | 17 ------ arch/powerpc/platforms/powernv/opal.c | 1 - 5 files changed, 136 deletions(-) (limited to 'arch/powerpc/include/asm/opal.h') diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h index 60250e2d1f0d..5cd8d2fddba9 100644 --- a/arch/powerpc/include/asm/opal.h +++ b/arch/powerpc/include/asm/opal.h @@ -288,62 +288,6 @@ enum OpalMessageType { OPAL_MSG_TYPE_MAX, }; -/* Machine check related definitions */ -enum OpalMCE_Version { - OpalMCE_V1 = 1, -}; - -enum OpalMCE_Severity { - OpalMCE_SEV_NO_ERROR = 0, - OpalMCE_SEV_WARNING = 1, - OpalMCE_SEV_ERROR_SYNC = 2, - OpalMCE_SEV_FATAL = 3, -}; - -enum OpalMCE_Disposition { - OpalMCE_DISPOSITION_RECOVERED = 0, - OpalMCE_DISPOSITION_NOT_RECOVERED = 1, -}; - -enum OpalMCE_Initiator { - OpalMCE_INITIATOR_UNKNOWN = 0, - OpalMCE_INITIATOR_CPU = 1, -}; - -enum OpalMCE_ErrorType { - OpalMCE_ERROR_TYPE_UNKNOWN = 0, - OpalMCE_ERROR_TYPE_UE = 1, - OpalMCE_ERROR_TYPE_SLB = 2, - OpalMCE_ERROR_TYPE_ERAT = 3, - OpalMCE_ERROR_TYPE_TLB = 4, -}; - -enum OpalMCE_UeErrorType { - OpalMCE_UE_ERROR_INDETERMINATE = 0, - OpalMCE_UE_ERROR_IFETCH = 1, - OpalMCE_UE_ERROR_PAGE_TABLE_WALK_IFETCH = 2, - OpalMCE_UE_ERROR_LOAD_STORE = 3, - OpalMCE_UE_ERROR_PAGE_TABLE_WALK_LOAD_STORE = 4, -}; - -enum OpalMCE_SlbErrorType { - OpalMCE_SLB_ERROR_INDETERMINATE = 0, - OpalMCE_SLB_ERROR_PARITY = 1, - OpalMCE_SLB_ERROR_MULTIHIT = 2, -}; - -enum OpalMCE_EratErrorType { - OpalMCE_ERAT_ERROR_INDETERMINATE = 0, - OpalMCE_ERAT_ERROR_PARITY = 1, - OpalMCE_ERAT_ERROR_MULTIHIT = 2, -}; - -enum OpalMCE_TlbErrorType { - OpalMCE_TLB_ERROR_INDETERMINATE = 0, - OpalMCE_TLB_ERROR_PARITY = 1, - OpalMCE_TLB_ERROR_MULTIHIT = 2, -}; - enum OpalThreadStatus { OPAL_THREAD_INACTIVE = 0x0, OPAL_THREAD_STARTED = 0x1, @@ -467,54 +411,6 @@ struct opal_ipmi_msg { uint8_t data[]; }; -struct opal_machine_check_event { - enum OpalMCE_Version version:8; /* 0x00 */ - uint8_t in_use; /* 0x01 */ - enum OpalMCE_Severity severity:8; /* 0x02 */ - enum OpalMCE_Initiator initiator:8; /* 0x03 */ - enum OpalMCE_ErrorType error_type:8; /* 0x04 */ - enum OpalMCE_Disposition disposition:8; /* 0x05 */ - uint8_t reserved_1[2]; /* 0x06 */ - uint64_t gpr3; /* 0x08 */ - uint64_t srr0; /* 0x10 */ - uint64_t srr1; /* 0x18 */ - union { /* 0x20 */ - struct { - enum OpalMCE_UeErrorType ue_error_type:8; - uint8_t effective_address_provided; - uint8_t physical_address_provided; - uint8_t reserved_1[5]; - uint64_t effective_address; - uint64_t physical_address; - uint8_t reserved_2[8]; - } ue_error; - - struct { - enum OpalMCE_SlbErrorType slb_error_type:8; - uint8_t effective_address_provided; - uint8_t reserved_1[6]; - uint64_t effective_address; - uint8_t reserved_2[16]; - } slb_error; - - struct { - enum OpalMCE_EratErrorType erat_error_type:8; - uint8_t effective_address_provided; - uint8_t reserved_1[6]; - uint64_t effective_address; - uint8_t reserved_2[16]; - } erat_error; - - struct { - enum OpalMCE_TlbErrorType tlb_error_type:8; - uint8_t effective_address_provided; - uint8_t reserved_1[6]; - uint64_t effective_address; - uint8_t reserved_2[16]; - } tlb_error; - } u; -}; - /* FSP memory errors handling */ enum OpalMemErr_Version { OpalMemErr_V1 = 1, diff --git a/arch/powerpc/include/asm/paca.h b/arch/powerpc/include/asm/paca.h index a5139ea6910b..24a386cbb928 100644 --- a/arch/powerpc/include/asm/paca.h +++ b/arch/powerpc/include/asm/paca.h @@ -42,7 +42,6 @@ extern unsigned int debug_smp_processor_id(void); /* from linux/smp.h */ #define get_slb_shadow() (get_paca()->slb_shadow_ptr) struct task_struct; -struct opal_machine_check_event; /* * Defines the layout of the paca. @@ -153,12 +152,6 @@ struct paca_struct { u64 tm_scratch; /* TM scratch area for reclaim */ #endif -#ifdef CONFIG_PPC_POWERNV - /* Pointer to OPAL machine check event structure set by the - * early exception handler for use by high level C handler - */ - struct opal_machine_check_event *opal_mc_evt; -#endif #ifdef CONFIG_PPC_BOOK3S_64 /* Exclusive emergency stack pointer for machine check exception. */ void *mc_emergency_sp; diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c index 9d7dede2847c..c161ef3f28a1 100644 --- a/arch/powerpc/kernel/asm-offsets.c +++ b/arch/powerpc/kernel/asm-offsets.c @@ -726,12 +726,5 @@ int main(void) arch.timing_last_enter.tv32.tbl)); #endif -#ifdef CONFIG_PPC_POWERNV - DEFINE(OPAL_MC_GPR3, offsetof(struct opal_machine_check_event, gpr3)); - DEFINE(OPAL_MC_SRR0, offsetof(struct opal_machine_check_event, srr0)); - DEFINE(OPAL_MC_SRR1, offsetof(struct opal_machine_check_event, srr1)); - DEFINE(PACA_OPAL_MC_EVT, offsetof(struct paca_struct, opal_mc_evt)); -#endif - return 0; } diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index a1d45c161e24..ad62f4d6ce31 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -1312,23 +1312,6 @@ hmi_exception_after_realmode: EXCEPTION_PROLOG_0(PACA_EXGEN) b hmi_exception_hv -#ifdef CONFIG_PPC_POWERNV -_GLOBAL(opal_mc_secondary_handler) - HMT_MEDIUM_PPR_DISCARD - SET_SCRATCH0(r13) - GET_PACA(r13) - clrldi r3,r3,2 - tovirt(r3,r3) - std r3,PACA_OPAL_MC_EVT(r13) - ld r13,OPAL_MC_SRR0(r3) - mtspr SPRN_SRR0,r13 - ld r13,OPAL_MC_SRR1(r3) - mtspr SPRN_SRR1,r13 - ld r3,OPAL_MC_GPR3(r3) - GET_SCRATCH0(r13) - b machine_check_pSeries -#endif /* CONFIG_PPC_POWERNV */ - #define MACHINE_CHECK_HANDLER_WINDUP \ /* Clear MSR_RI before setting SRR0 and SRR1. */\ diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c index a1c37f9d60d2..cb0b6de79cd4 100644 --- a/arch/powerpc/platforms/powernv/opal.c +++ b/arch/powerpc/platforms/powernv/opal.c @@ -50,7 +50,6 @@ static int mc_recoverable_range_len; struct device_node *opal_node; static DEFINE_SPINLOCK(opal_write_lock); -extern u64 opal_mc_secondary_handler[]; static unsigned int *opal_irqs; static unsigned int opal_irq_count; static ATOMIC_NOTIFIER_HEAD(opal_notifier_head); -- cgit v1.2.3-70-g09d2