From 08273c9f619cb32fb041935724f576e607101f3b Mon Sep 17 00:00:00 2001 From: Nathan Lynch Date: Fri, 10 Feb 2023 12:42:08 -0600 Subject: powerpc/rtas: arch-wide function token lookup conversions With the tokens for all implemented RTAS functions now available via rtas_function_token(), which is optimal and safe for arbitrary contexts, there is no need to use rtas_token() or cache its result. Most conversions are trivial, but a few are worth describing in more detail: * Error injection token comparisons for lockdown purposes are consolidated into a simple predicate: token_is_restricted_errinjct(). * A couple of special cases in block_rtas_call() do not use rtas_token() but perform string comparisons against names in the function table. These are converted to compare against token values instead, which is logically equivalent but less expensive. * The lookup for the ibm,os-term token can be deferred until needed, instead of caching it at boot to avoid device tree traversal during panic. * Since rtas_function_token() accesses a read-only data structure without taking any locks, xmon's lookup of set-indicator can be performed as needed instead of cached at startup. Signed-off-by: Nathan Lynch Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20230125-b4-powerpc-rtas-queue-v3-20-26929c8cce78@linux.ibm.com --- arch/powerpc/kernel/rtas-proc.c | 24 ++++---- arch/powerpc/kernel/rtas-rtc.c | 6 +- arch/powerpc/kernel/rtas.c | 79 ++++++++++++------------- arch/powerpc/kernel/rtas_flash.c | 21 ++++--- arch/powerpc/kernel/rtas_pci.c | 8 +-- arch/powerpc/kernel/rtasd.c | 2 +- arch/powerpc/platforms/52xx/efika.c | 4 +- arch/powerpc/platforms/cell/ras.c | 4 +- arch/powerpc/platforms/cell/smp.c | 4 +- arch/powerpc/platforms/chrp/nvram.c | 4 +- arch/powerpc/platforms/chrp/pci.c | 4 +- arch/powerpc/platforms/chrp/setup.c | 4 +- arch/powerpc/platforms/maple/setup.c | 4 +- arch/powerpc/platforms/pseries/dlpar.c | 2 +- arch/powerpc/platforms/pseries/eeh_pseries.c | 22 +++---- arch/powerpc/platforms/pseries/hotplug-cpu.c | 4 +- arch/powerpc/platforms/pseries/io_event_irq.c | 2 +- arch/powerpc/platforms/pseries/mobility.c | 4 +- arch/powerpc/platforms/pseries/msi.c | 4 +- arch/powerpc/platforms/pseries/nvram.c | 4 +- arch/powerpc/platforms/pseries/papr-sysparm.c | 4 +- arch/powerpc/platforms/pseries/pci.c | 2 +- arch/powerpc/platforms/pseries/ras.c | 2 +- arch/powerpc/platforms/pseries/rtas-work-area.c | 4 +- arch/powerpc/platforms/pseries/setup.c | 8 +-- arch/powerpc/platforms/pseries/smp.c | 6 +- arch/powerpc/sysdev/xics/ics-rtas.c | 8 +-- arch/powerpc/xmon/xmon.c | 16 +---- 28 files changed, 123 insertions(+), 137 deletions(-) diff --git a/arch/powerpc/kernel/rtas-proc.c b/arch/powerpc/kernel/rtas-proc.c index 081b2b741a8c..9454b8395b6a 100644 --- a/arch/powerpc/kernel/rtas-proc.c +++ b/arch/powerpc/kernel/rtas-proc.c @@ -287,9 +287,9 @@ static ssize_t ppc_rtas_poweron_write(struct file *file, rtc_time64_to_tm(nowtime, &tm); - error = rtas_call(rtas_token("set-time-for-power-on"), 7, 1, NULL, - tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, - tm.tm_hour, tm.tm_min, tm.tm_sec, 0 /* nano */); + error = rtas_call(rtas_function_token(RTAS_FN_SET_TIME_FOR_POWER_ON), 7, 1, NULL, + tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, + tm.tm_hour, tm.tm_min, tm.tm_sec, 0 /* nano */); if (error) printk(KERN_WARNING "error: setting poweron time returned: %s\n", ppc_rtas_process_error(error)); @@ -350,9 +350,9 @@ static ssize_t ppc_rtas_clock_write(struct file *file, return error; rtc_time64_to_tm(nowtime, &tm); - error = rtas_call(rtas_token("set-time-of-day"), 7, 1, NULL, - tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, - tm.tm_hour, tm.tm_min, tm.tm_sec, 0); + error = rtas_call(rtas_function_token(RTAS_FN_SET_TIME_OF_DAY), 7, 1, NULL, + tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, + tm.tm_hour, tm.tm_min, tm.tm_sec, 0); if (error) printk(KERN_WARNING "error: setting the clock returned: %s\n", ppc_rtas_process_error(error)); @@ -362,7 +362,7 @@ static ssize_t ppc_rtas_clock_write(struct file *file, static int ppc_rtas_clock_show(struct seq_file *m, void *v) { int ret[8]; - int error = rtas_call(rtas_token("get-time-of-day"), 0, 8, ret); + int error = rtas_call(rtas_function_token(RTAS_FN_GET_TIME_OF_DAY), 0, 8, ret); if (error) { printk(KERN_WARNING "error: reading the clock returned: %s\n", @@ -385,7 +385,7 @@ static int ppc_rtas_sensors_show(struct seq_file *m, void *v) { int i,j; int state, error; - int get_sensor_state = rtas_token("get-sensor-state"); + int get_sensor_state = rtas_function_token(RTAS_FN_GET_SENSOR_STATE); seq_printf(m, "RTAS (RunTime Abstraction Services) Sensor Information\n"); seq_printf(m, "Sensor\t\tValue\t\tCondition\tLocation\n"); @@ -708,8 +708,8 @@ static ssize_t ppc_rtas_tone_freq_write(struct file *file, return error; rtas_tone_frequency = freq; /* save it for later */ - error = rtas_call(rtas_token("set-indicator"), 3, 1, NULL, - TONE_FREQUENCY, 0, freq); + error = rtas_call(rtas_function_token(RTAS_FN_SET_INDICATOR), 3, 1, NULL, + TONE_FREQUENCY, 0, freq); if (error) printk(KERN_WARNING "error: setting tone frequency returned: %s\n", ppc_rtas_process_error(error)); @@ -736,8 +736,8 @@ static ssize_t ppc_rtas_tone_volume_write(struct file *file, volume = 100; rtas_tone_volume = volume; /* save it for later */ - error = rtas_call(rtas_token("set-indicator"), 3, 1, NULL, - TONE_VOLUME, 0, volume); + error = rtas_call(rtas_function_token(RTAS_FN_SET_INDICATOR), 3, 1, NULL, + TONE_VOLUME, 0, volume); if (error) printk(KERN_WARNING "error: setting tone volume returned: %s\n", ppc_rtas_process_error(error)); diff --git a/arch/powerpc/kernel/rtas-rtc.c b/arch/powerpc/kernel/rtas-rtc.c index 5a31d1829bca..6996214532bd 100644 --- a/arch/powerpc/kernel/rtas-rtc.c +++ b/arch/powerpc/kernel/rtas-rtc.c @@ -21,7 +21,7 @@ time64_t __init rtas_get_boot_time(void) max_wait_tb = get_tb() + tb_ticks_per_usec * 1000 * MAX_RTC_WAIT; do { - error = rtas_call(rtas_token("get-time-of-day"), 0, 8, ret); + error = rtas_call(rtas_function_token(RTAS_FN_GET_TIME_OF_DAY), 0, 8, ret); wait_time = rtas_busy_delay_time(error); if (wait_time) { @@ -53,7 +53,7 @@ void rtas_get_rtc_time(struct rtc_time *rtc_tm) max_wait_tb = get_tb() + tb_ticks_per_usec * 1000 * MAX_RTC_WAIT; do { - error = rtas_call(rtas_token("get-time-of-day"), 0, 8, ret); + error = rtas_call(rtas_function_token(RTAS_FN_GET_TIME_OF_DAY), 0, 8, ret); wait_time = rtas_busy_delay_time(error); if (wait_time) { @@ -90,7 +90,7 @@ int rtas_set_rtc_time(struct rtc_time *tm) max_wait_tb = get_tb() + tb_ticks_per_usec * 1000 * MAX_RTC_WAIT; do { - error = rtas_call(rtas_token("set-time-of-day"), 7, 1, NULL, + error = rtas_call(rtas_function_token(RTAS_FN_SET_TIME_OF_DAY), 7, 1, NULL, tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec, 0); diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c index bb6f5370c279..31175b34856a 100644 --- a/arch/powerpc/kernel/rtas.c +++ b/arch/powerpc/kernel/rtas.c @@ -782,8 +782,8 @@ void rtas_progress(char *s, unsigned short hex) "ibm,display-truncation-length", NULL); of_node_put(root); } - display_character = rtas_token("display-character"); - set_indicator = rtas_token("set-indicator"); + display_character = rtas_function_token(RTAS_FN_DISPLAY_CHARACTER); + set_indicator = rtas_function_token(RTAS_FN_SET_INDICATOR); } if (display_character == RTAS_UNKNOWN_SERVICE) { @@ -937,7 +937,6 @@ static void __init init_error_log_max(void) static char rtas_err_buf[RTAS_ERROR_LOG_MAX]; -static int rtas_last_error_token; /** Return a copy of the detailed error text associated with the * most recent failed call to rtas. Because the error text @@ -947,16 +946,17 @@ static int rtas_last_error_token; */ static char *__fetch_rtas_last_error(char *altbuf) { + const s32 token = rtas_function_token(RTAS_FN_RTAS_LAST_ERROR); struct rtas_args err_args, save_args; u32 bufsz; char *buf = NULL; - if (rtas_last_error_token == -1) + if (token == -1) return NULL; bufsz = rtas_get_error_log_max(); - err_args.token = cpu_to_be32(rtas_last_error_token); + err_args.token = cpu_to_be32(token); err_args.nargs = cpu_to_be32(2); err_args.nret = cpu_to_be32(1); err_args.args[0] = cpu_to_be32(__pa(rtas_err_buf)); @@ -1025,8 +1025,11 @@ void rtas_call_unlocked(struct rtas_args *args, int token, int nargs, int nret, va_end(list); } -static int ibm_open_errinjct_token; -static int ibm_errinjct_token; +static bool token_is_restricted_errinjct(s32 token) +{ + return token == rtas_function_token(RTAS_FN_IBM_OPEN_ERRINJCT) || + token == rtas_function_token(RTAS_FN_IBM_ERRINJCT); +} /** * rtas_call() - Invoke an RTAS firmware function. @@ -1098,7 +1101,7 @@ int rtas_call(int token, int nargs, int nret, int *outputs, ...) if (!rtas.entry || token == RTAS_UNKNOWN_SERVICE) return -1; - if (token == ibm_open_errinjct_token || token == ibm_errinjct_token) { + if (token_is_restricted_errinjct(token)) { /* * It would be nicer to not discard the error value * from security_locked_down(), but callers expect an @@ -1330,7 +1333,7 @@ static int rtas_error_rc(int rtas_rc) int rtas_get_power_level(int powerdomain, int *level) { - int token = rtas_token("get-power-level"); + int token = rtas_function_token(RTAS_FN_GET_POWER_LEVEL); int rc; if (token == RTAS_UNKNOWN_SERVICE) @@ -1347,7 +1350,7 @@ EXPORT_SYMBOL_GPL(rtas_get_power_level); int rtas_set_power_level(int powerdomain, int level, int *setlevel) { - int token = rtas_token("set-power-level"); + int token = rtas_function_token(RTAS_FN_SET_POWER_LEVEL); int rc; if (token == RTAS_UNKNOWN_SERVICE) @@ -1365,7 +1368,7 @@ EXPORT_SYMBOL_GPL(rtas_set_power_level); int rtas_get_sensor(int sensor, int index, int *state) { - int token = rtas_token("get-sensor-state"); + int token = rtas_function_token(RTAS_FN_GET_SENSOR_STATE); int rc; if (token == RTAS_UNKNOWN_SERVICE) @@ -1383,7 +1386,7 @@ EXPORT_SYMBOL_GPL(rtas_get_sensor); int rtas_get_sensor_fast(int sensor, int index, int *state) { - int token = rtas_token("get-sensor-state"); + int token = rtas_function_token(RTAS_FN_GET_SENSOR_STATE); int rc; if (token == RTAS_UNKNOWN_SERVICE) @@ -1425,7 +1428,7 @@ bool rtas_indicator_present(int token, int *maxindex) int rtas_set_indicator(int indicator, int index, int new_value) { - int token = rtas_token("set-indicator"); + int token = rtas_function_token(RTAS_FN_SET_INDICATOR); int rc; if (token == RTAS_UNKNOWN_SERVICE) @@ -1446,8 +1449,8 @@ EXPORT_SYMBOL_GPL(rtas_set_indicator); */ int rtas_set_indicator_fast(int indicator, int index, int new_value) { + int token = rtas_function_token(RTAS_FN_SET_INDICATOR); int rc; - int token = rtas_token("set-indicator"); if (token == RTAS_UNKNOWN_SERVICE) return -ENOENT; @@ -1489,10 +1492,11 @@ int rtas_set_indicator_fast(int indicator, int index, int new_value) */ int rtas_ibm_suspend_me(int *fw_status) { + int token = rtas_function_token(RTAS_FN_IBM_SUSPEND_ME); int fwrc; int ret; - fwrc = rtas_call(rtas_token("ibm,suspend-me"), 0, 1, NULL); + fwrc = rtas_call(token, 0, 1, NULL); switch (fwrc) { case 0: @@ -1525,7 +1529,7 @@ void __noreturn rtas_restart(char *cmd) if (rtas_flash_term_hook) rtas_flash_term_hook(SYS_RESTART); pr_emerg("system-reboot returned %d\n", - rtas_call(rtas_token("system-reboot"), 0, 1, NULL)); + rtas_call(rtas_function_token(RTAS_FN_SYSTEM_REBOOT), 0, 1, NULL)); for (;;); } @@ -1535,7 +1539,7 @@ void rtas_power_off(void) rtas_flash_term_hook(SYS_POWER_OFF); /* allow power on only with power button press */ pr_emerg("power-off returned %d\n", - rtas_call(rtas_token("power-off"), 2, 1, NULL, -1, -1)); + rtas_call(rtas_function_token(RTAS_FN_POWER_OFF), 2, 1, NULL, -1, -1)); for (;;); } @@ -1545,16 +1549,17 @@ void __noreturn rtas_halt(void) rtas_flash_term_hook(SYS_HALT); /* allow power on only with power button press */ pr_emerg("power-off returned %d\n", - rtas_call(rtas_token("power-off"), 2, 1, NULL, -1, -1)); + rtas_call(rtas_function_token(RTAS_FN_POWER_OFF), 2, 1, NULL, -1, -1)); for (;;); } /* Must be in the RMO region, so we place it here */ static char rtas_os_term_buf[2048]; -static s32 ibm_os_term_token = RTAS_UNKNOWN_SERVICE; +static bool ibm_extended_os_term; void rtas_os_term(char *str) { + s32 token = rtas_function_token(RTAS_FN_IBM_OS_TERM); int status; /* @@ -1563,7 +1568,8 @@ void rtas_os_term(char *str) * this property may terminate the partition which we want to avoid * since it interferes with panic_timeout. */ - if (ibm_os_term_token == RTAS_UNKNOWN_SERVICE) + + if (token == RTAS_UNKNOWN_SERVICE || !ibm_extended_os_term) return; snprintf(rtas_os_term_buf, 2048, "OS panic: %s", str); @@ -1574,8 +1580,7 @@ void rtas_os_term(char *str) * schedules. */ do { - status = rtas_call(ibm_os_term_token, 1, 1, NULL, - __pa(rtas_os_term_buf)); + status = rtas_call(token, 1, 1, NULL, __pa(rtas_os_term_buf)); } while (rtas_busy_delay_time(status)); if (status != 0) @@ -1595,10 +1600,9 @@ void rtas_os_term(char *str) */ void rtas_activate_firmware(void) { - int token; + int token = rtas_function_token(RTAS_FN_IBM_ACTIVATE_FIRMWARE); int fwrc; - token = rtas_token("ibm,activate-firmware"); if (token == RTAS_UNKNOWN_SERVICE) { pr_notice("ibm,activate-firmware method unavailable\n"); return; @@ -1684,6 +1688,8 @@ static bool block_rtas_call(int token, int nargs, { const struct rtas_function *func; const struct rtas_filter *f; + const bool is_platform_dump = token == rtas_function_token(RTAS_FN_IBM_PLATFORM_DUMP); + const bool is_config_conn = token == rtas_function_token(RTAS_FN_IBM_CONFIGURE_CONNECTOR); u32 base, size, end; /* @@ -1720,8 +1726,7 @@ static bool block_rtas_call(int token, int nargs, * Special case for ibm,platform-dump - NULL buffer * address is used to indicate end of dump processing */ - if (!strcmp(func->name, "ibm,platform-dump") && - base == 0) + if (is_platform_dump && base == 0) return false; if (!in_rmo_buf(base, end)) @@ -1742,8 +1747,7 @@ static bool block_rtas_call(int token, int nargs, * Special case for ibm,configure-connector where the * address can be 0 */ - if (!strcmp(func->name, "ibm,configure-connector") && - base == 0) + if (is_config_conn && base == 0) return false; if (!in_rmo_buf(base, end)) @@ -1798,7 +1802,7 @@ SYSCALL_DEFINE1(rtas, struct rtas_args __user *, uargs) if (block_rtas_call(token, nargs, &args)) return -EINVAL; - if (token == ibm_open_errinjct_token || token == ibm_errinjct_token) { + if (token_is_restricted_errinjct(token)) { int err; err = security_locked_down(LOCKDOWN_RTAS_ERROR_INJECTION); @@ -1807,7 +1811,7 @@ SYSCALL_DEFINE1(rtas, struct rtas_args __user *, uargs) } /* Need to handle ibm,suspend_me call specially */ - if (token == rtas_token("ibm,suspend-me")) { + if (token == rtas_function_token(RTAS_FN_IBM_SUSPEND_ME)) { /* * rtas_ibm_suspend_me assumes the streamid handle is in cpu @@ -1942,11 +1946,10 @@ void __init rtas_initialize(void) rtas_function_table_init(); /* - * Discover these now to avoid device tree lookups in the + * Discover this now to avoid a device tree lookup in the * panic path. */ - if (of_property_read_bool(rtas.dev, "ibm,extended-os-term")) - ibm_os_term_token = rtas_token("ibm,os-term"); + ibm_extended_os_term = of_property_read_bool(rtas.dev, "ibm,extended-os-term"); /* If RTAS was found, allocate the RMO buffer for it and look for * the stop-self token if any @@ -1961,12 +1964,6 @@ void __init rtas_initialize(void) panic("ERROR: RTAS: Failed to allocate %lx bytes below %pa\n", PAGE_SIZE, &rtas_region); -#ifdef CONFIG_RTAS_ERROR_LOGGING - rtas_last_error_token = rtas_token("rtas-last-error"); -#endif - ibm_open_errinjct_token = rtas_token("ibm,open-errinjct"); - ibm_errinjct_token = rtas_token("ibm,errinjct"); - rtas_work_area_reserve_arena(rtas_region); } @@ -2022,13 +2019,13 @@ void rtas_give_timebase(void) raw_spin_lock_irqsave(&timebase_lock, flags); hard_irq_disable(); - rtas_call(rtas_token("freeze-time-base"), 0, 1, NULL); + rtas_call(rtas_function_token(RTAS_FN_FREEZE_TIME_BASE), 0, 1, NULL); timebase = get_tb(); raw_spin_unlock(&timebase_lock); while (timebase) barrier(); - rtas_call(rtas_token("thaw-time-base"), 0, 1, NULL); + rtas_call(rtas_function_token(RTAS_FN_THAW_TIME_BASE), 0, 1, NULL); local_irq_restore(flags); } diff --git a/arch/powerpc/kernel/rtas_flash.c b/arch/powerpc/kernel/rtas_flash.c index bc817a5619d6..4caf5e3079eb 100644 --- a/arch/powerpc/kernel/rtas_flash.c +++ b/arch/powerpc/kernel/rtas_flash.c @@ -376,7 +376,7 @@ static void manage_flash(struct rtas_manage_flash_t *args_buf, unsigned int op) s32 rc; do { - rc = rtas_call(rtas_token("ibm,manage-flash-image"), 1, 1, + rc = rtas_call(rtas_function_token(RTAS_FN_IBM_MANAGE_FLASH_IMAGE), 1, 1, NULL, op); } while (rtas_busy_delay(rc)); @@ -444,7 +444,7 @@ error: */ static void validate_flash(struct rtas_validate_flash_t *args_buf) { - int token = rtas_token("ibm,validate-flash-image"); + int token = rtas_function_token(RTAS_FN_IBM_VALIDATE_FLASH_IMAGE); int update_results; s32 rc; @@ -570,7 +570,7 @@ static void rtas_flash_firmware(int reboot_type) return; } - update_token = rtas_token("ibm,update-flash-64-and-reboot"); + update_token = rtas_function_token(RTAS_FN_IBM_UPDATE_FLASH_64_AND_REBOOT); if (update_token == RTAS_UNKNOWN_SERVICE) { printk(KERN_ALERT "FLASH: ibm,update-flash-64-and-reboot " "is not available -- not a service partition?\n"); @@ -653,7 +653,7 @@ static void rtas_flash_firmware(int reboot_type) */ struct rtas_flash_file { const char *filename; - const char *rtas_call_name; + const rtas_fn_handle_t handle; int *status; const struct proc_ops ops; }; @@ -661,7 +661,7 @@ struct rtas_flash_file { static const struct rtas_flash_file rtas_flash_files[] = { { .filename = "powerpc/rtas/" FIRMWARE_FLASH_NAME, - .rtas_call_name = "ibm,update-flash-64-and-reboot", + .handle = RTAS_FN_IBM_UPDATE_FLASH_64_AND_REBOOT, .status = &rtas_update_flash_data.status, .ops.proc_read = rtas_flash_read_msg, .ops.proc_write = rtas_flash_write, @@ -670,7 +670,7 @@ static const struct rtas_flash_file rtas_flash_files[] = { }, { .filename = "powerpc/rtas/" FIRMWARE_UPDATE_NAME, - .rtas_call_name = "ibm,update-flash-64-and-reboot", + .handle = RTAS_FN_IBM_UPDATE_FLASH_64_AND_REBOOT, .status = &rtas_update_flash_data.status, .ops.proc_read = rtas_flash_read_num, .ops.proc_write = rtas_flash_write, @@ -679,7 +679,7 @@ static const struct rtas_flash_file rtas_flash_files[] = { }, { .filename = "powerpc/rtas/" VALIDATE_FLASH_NAME, - .rtas_call_name = "ibm,validate-flash-image", + .handle = RTAS_FN_IBM_VALIDATE_FLASH_IMAGE, .status = &rtas_validate_flash_data.status, .ops.proc_read = validate_flash_read, .ops.proc_write = validate_flash_write, @@ -688,7 +688,7 @@ static const struct rtas_flash_file rtas_flash_files[] = { }, { .filename = "powerpc/rtas/" MANAGE_FLASH_NAME, - .rtas_call_name = "ibm,manage-flash-image", + .handle = RTAS_FN_IBM_MANAGE_FLASH_IMAGE, .status = &rtas_manage_flash_data.status, .ops.proc_read = manage_flash_read, .ops.proc_write = manage_flash_write, @@ -700,8 +700,7 @@ static int __init rtas_flash_init(void) { int i; - if (rtas_token("ibm,update-flash-64-and-reboot") == - RTAS_UNKNOWN_SERVICE) { + if (rtas_function_token(RTAS_FN_IBM_UPDATE_FLASH_64_AND_REBOOT) == RTAS_UNKNOWN_SERVICE) { pr_info("rtas_flash: no firmware flash support\n"); return -EINVAL; } @@ -730,7 +729,7 @@ static int __init rtas_flash_init(void) * This code assumes that the status int is the first member of the * struct */ - token = rtas_token(f->rtas_call_name); + token = rtas_function_token(f->handle); if (token == RTAS_UNKNOWN_SERVICE) *f->status = FLASH_AUTH; else diff --git a/arch/powerpc/kernel/rtas_pci.c b/arch/powerpc/kernel/rtas_pci.c index 5a2f5ea3b054..e1fdc7473b72 100644 --- a/arch/powerpc/kernel/rtas_pci.c +++ b/arch/powerpc/kernel/rtas_pci.c @@ -191,10 +191,10 @@ static void python_countermeasures(struct device_node *dev) void __init init_pci_config_tokens(void) { - read_pci_config = rtas_token("read-pci-config"); - write_pci_config = rtas_token("write-pci-config"); - ibm_read_pci_config = rtas_token("ibm,read-pci-config"); - ibm_write_pci_config = rtas_token("ibm,write-pci-config"); + read_pci_config = rtas_function_token(RTAS_FN_READ_PCI_CONFIG); + write_pci_config = rtas_function_token(RTAS_FN_WRITE_PCI_CONFIG); + ibm_read_pci_config = rtas_function_token(RTAS_FN_IBM_READ_PCI_CONFIG); + ibm_write_pci_config = rtas_function_token(RTAS_FN_IBM_WRITE_PCI_CONFIG); } unsigned long get_phb_buid(struct device_node *phb) diff --git a/arch/powerpc/kernel/rtasd.c b/arch/powerpc/kernel/rtasd.c index cc56ac6ba4b0..9bba469239fc 100644 --- a/arch/powerpc/kernel/rtasd.c +++ b/arch/powerpc/kernel/rtasd.c @@ -506,7 +506,7 @@ static int __init rtas_event_scan_init(void) return 0; /* No RTAS */ - event_scan = rtas_token("event-scan"); + event_scan = rtas_function_token(RTAS_FN_EVENT_SCAN); if (event_scan == RTAS_UNKNOWN_SERVICE) { printk(KERN_INFO "rtasd: No event-scan on system\n"); return -ENODEV; diff --git a/arch/powerpc/platforms/52xx/efika.c b/arch/powerpc/platforms/52xx/efika.c index e0647720ed5e..61dfec74ff85 100644 --- a/arch/powerpc/platforms/52xx/efika.c +++ b/arch/powerpc/platforms/52xx/efika.c @@ -41,7 +41,7 @@ static int rtas_read_config(struct pci_bus *bus, unsigned int devfn, int offset, int ret = -1; int rval; - rval = rtas_call(rtas_token("read-pci-config"), 2, 2, &ret, addr, len); + rval = rtas_call(rtas_function_token(RTAS_FN_READ_PCI_CONFIG), 2, 2, &ret, addr, len); *val = ret; return rval ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL; } @@ -55,7 +55,7 @@ static int rtas_write_config(struct pci_bus *bus, unsigned int devfn, | (hose->global_number << 24); int rval; - rval = rtas_call(rtas_token("write-pci-config"), 3, 1, NULL, + rval = rtas_call(rtas_function_token(RTAS_FN_WRITE_PCI_CONFIG), 3, 1, NULL, addr, len, val); return rval ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL; } diff --git a/arch/powerpc/platforms/cell/ras.c b/arch/powerpc/platforms/cell/ras.c index 8d934ea6270c..98db63b72d56 100644 --- a/arch/powerpc/platforms/cell/ras.c +++ b/arch/powerpc/platforms/cell/ras.c @@ -297,8 +297,8 @@ int cbe_sysreset_hack(void) static int __init cbe_ptcal_init(void) { int ret; - ptcal_start_tok = rtas_token("ibm,cbe-start-ptcal"); - ptcal_stop_tok = rtas_token("ibm,cbe-stop-ptcal"); + ptcal_start_tok = rtas_function_token(RTAS_FN_IBM_CBE_START_PTCAL); + ptcal_stop_tok = rtas_function_token(RTAS_FN_IBM_CBE_STOP_PTCAL); if (ptcal_start_tok == RTAS_UNKNOWN_SERVICE || ptcal_stop_tok == RTAS_UNKNOWN_SERVICE) diff --git a/arch/powerpc/platforms/cell/smp.c b/arch/powerpc/platforms/cell/smp.c index 31ce00b52a32..30394c6f8894 100644 --- a/arch/powerpc/platforms/cell/smp.c +++ b/arch/powerpc/platforms/cell/smp.c @@ -81,7 +81,7 @@ static inline int smp_startup_cpu(unsigned int lcpu) * If the RTAS start-cpu token does not exist then presume the * cpu is already spinning. */ - start_cpu = rtas_token("start-cpu"); + start_cpu = rtas_function_token(RTAS_FN_START_CPU); if (start_cpu == RTAS_UNKNOWN_SERVICE) return 1; @@ -152,7 +152,7 @@ void __init smp_init_cell(void) cpumask_clear_cpu(boot_cpuid, &of_spin_map); /* Non-lpar has additional take/give timebase */ - if (rtas_token("freeze-time-base") != RTAS_UNKNOWN_SERVICE) { + if (rtas_function_token(RTAS_FN_FREEZE_TIME_BASE) != RTAS_UNKNOWN_SERVICE) { smp_ops->give_timebase = rtas_give_timebase; smp_ops->take_timebase = rtas_take_timebase; } diff --git a/arch/powerpc/platforms/chrp/nvram.c b/arch/powerpc/platforms/chrp/nvram.c index dab78076fedb..0eedae96498c 100644 --- a/arch/powerpc/platforms/chrp/nvram.c +++ b/arch/powerpc/platforms/chrp/nvram.c @@ -31,7 +31,7 @@ static unsigned char chrp_nvram_read_val(int addr) return 0xff; } spin_lock_irqsave(&nvram_lock, flags); - if ((rtas_call(rtas_token("nvram-fetch"), 3, 2, &done, addr, + if ((rtas_call(rtas_function_token(RTAS_FN_NVRAM_FETCH), 3, 2, &done, addr, __pa(nvram_buf), 1) != 0) || 1 != done) ret = 0xff; else @@ -53,7 +53,7 @@ static void chrp_nvram_write_val(int addr, unsigned char val) } spin_lock_irqsave(&nvram_lock, flags); nvram_buf[0] = val; - if ((rtas_call(rtas_token("nvram-store"), 3, 2, &done, addr, + if ((rtas_call(rtas_function_token(RTAS_FN_NVRAM_STORE), 3, 2, &done, addr, __pa(nvram_buf), 1) != 0) || 1 != done) printk(KERN_DEBUG "rtas IO error storing 0x%02x at %d", val, addr); spin_unlock_irqrestore(&nvram_lock, flags); diff --git a/arch/powerpc/platforms/chrp/pci.c b/arch/powerpc/platforms/chrp/pci.c index 6f6598e771ff..428fd2a7b3ee 100644 --- a/arch/powerpc/platforms/chrp/pci.c +++ b/arch/powerpc/platforms/chrp/pci.c @@ -104,7 +104,7 @@ static int rtas_read_config(struct pci_bus *bus, unsigned int devfn, int offset, int ret = -1; int rval; - rval = rtas_call(rtas_token("read-pci-config"), 2, 2, &ret, addr, len); + rval = rtas_call(rtas_function_token(RTAS_FN_READ_PCI_CONFIG), 2, 2, &ret, addr, len); *val = ret; return rval? PCIBIOS_DEVICE_NOT_FOUND: PCIBIOS_SUCCESSFUL; } @@ -118,7 +118,7 @@ static int rtas_write_config(struct pci_bus *bus, unsigned int devfn, int offset | (hose->global_number << 24); int rval; - rval = rtas_call(rtas_token("write-pci-config"), 3, 1, NULL, + rval = rtas_call(rtas_function_token(RTAS_FN_WRITE_PCI_CONFIG), 3, 1, NULL, addr, len, val); return rval? PCIBIOS_DEVICE_NOT_FOUND: PCIBIOS_SUCCESSFUL; } diff --git a/arch/powerpc/platforms/chrp/setup.c b/arch/powerpc/platforms/chrp/setup.c index ec63c0558db6..d9049ceb1046 100644 --- a/arch/powerpc/platforms/chrp/setup.c +++ b/arch/powerpc/platforms/chrp/setup.c @@ -323,11 +323,11 @@ static void __init chrp_setup_arch(void) printk("chrp type = %x [%s]\n", _chrp_type, chrp_names[_chrp_type]); rtas_initialize(); - if (rtas_token("display-character") >= 0) + if (rtas_function_token(RTAS_FN_DISPLAY_CHARACTER) >= 0) ppc_md.progress = rtas_progress; /* use RTAS time-of-day routines if available */ - if (rtas_token("get-time-of-day") != RTAS_UNKNOWN_SERVICE) { + if (rtas_function_token(RTAS_FN_GET_TIME_OF_DAY) != RTAS_UNKNOWN_SERVICE) { ppc_md.get_boot_time = rtas_get_boot_time; ppc_md.get_rtc_time = rtas_get_rtc_time; ppc_md.set_rtc_time = rtas_set_rtc_time; diff --git a/arch/powerpc/platforms/maple/setup.c b/arch/powerpc/platforms/maple/setup.c index c26c379e1cc8..98c8e3603064 100644 --- a/arch/powerpc/platforms/maple/setup.c +++ b/arch/powerpc/platforms/maple/setup.c @@ -162,8 +162,8 @@ static struct smp_ops_t maple_smp_ops = { static void __init maple_use_rtas_reboot_and_halt_if_present(void) { - if (rtas_service_present("system-reboot") && - rtas_service_present("power-off")) { + if (rtas_function_implemented(RTAS_FN_SYSTEM_REBOOT) && + rtas_function_implemented(RTAS_FN_POWER_OFF)) { ppc_md.restart = rtas_restart; pm_power_off = rtas_power_off; ppc_md.halt = rtas_halt; diff --git a/arch/powerpc/platforms/pseries/dlpar.c b/arch/powerpc/platforms/pseries/dlpar.c index 9b65b50a5456..75ffdbcd2865 100644 --- a/arch/powerpc/platforms/pseries/dlpar.c +++ b/arch/powerpc/platforms/pseries/dlpar.c @@ -143,7 +143,7 @@ struct device_node *dlpar_configure_connector(__be32 drc_index, int cc_token; int rc = -1; - cc_token = rtas_token("ibm,configure-connector"); + cc_token = rtas_function_token(RTAS_FN_IBM_CONFIGURE_CONNECTOR); if (cc_token == RTAS_UNKNOWN_SERVICE) return NULL; diff --git a/arch/powerpc/platforms/pseries/eeh_pseries.c b/arch/powerpc/platforms/pseries/eeh_pseries.c index 6b507b62ce8f..def184da51cf 100644 --- a/arch/powerpc/platforms/pseries/eeh_pseries.c +++ b/arch/powerpc/platforms/pseries/eeh_pseries.c @@ -699,7 +699,7 @@ static int pseries_eeh_write_config(struct eeh_dev *edev, int where, int size, u static int pseries_send_allow_unfreeze(struct pci_dn *pdn, u16 *vf_pe_array, int cur_vfs) { int rc; - int ibm_allow_unfreeze = rtas_token("ibm,open-sriov-allow-unfreeze"); + int ibm_allow_unfreeze = rtas_function_token(RTAS_FN_IBM_OPEN_SRIOV_ALLOW_UNFREEZE); unsigned long buid, addr; addr = rtas_config_addr(pdn->busno, pdn->devfn, 0); @@ -774,7 +774,7 @@ static int pseries_notify_resume(struct eeh_dev *edev) if (!edev) return -EEXIST; - if (rtas_token("ibm,open-sriov-allow-unfreeze") == RTAS_UNKNOWN_SERVICE) + if (rtas_function_token(RTAS_FN_IBM_OPEN_SRIOV_ALLOW_UNFREEZE) == RTAS_UNKNOWN_SERVICE) return -EINVAL; if (edev->pdev->is_physfn || edev->pdev->is_virtfn) @@ -815,14 +815,14 @@ static int __init eeh_pseries_init(void) int ret, config_addr; /* figure out EEH RTAS function call tokens */ - ibm_set_eeh_option = rtas_token("ibm,set-eeh-option"); - ibm_set_slot_reset = rtas_token("ibm,set-slot-reset"); - ibm_read_slot_reset_state2 = rtas_token("ibm,read-slot-reset-state2"); - ibm_read_slot_reset_state = rtas_token("ibm,read-slot-reset-state"); - ibm_slot_error_detail = rtas_token("ibm,slot-error-detail"); - ibm_get_config_addr_info2 = rtas_token("ibm,get-config-addr-info2"); - ibm_get_config_addr_info = rtas_token("ibm,get-config-addr-info"); - ibm_configure_pe = rtas_token("ibm,configure-pe"); + ibm_set_eeh_option = rtas_function_token(RTAS_FN_IBM_SET_EEH_OPTION); + ibm_set_slot_reset = rtas_function_token(RTAS_FN_IBM_SET_SLOT_RESET); + ibm_read_slot_reset_state2 = rtas_function_token(RTAS_FN_IBM_READ_SLOT_RESET_STATE2); + ibm_read_slot_reset_state = rtas_function_token(RTAS_FN_IBM_READ_SLOT_RESET_STATE); + ibm_slot_error_detail = rtas_function_token(RTAS_FN_IBM_SLOT_ERROR_DETAIL); + ibm_get_config_addr_info2 = rtas_function_token(RTAS_FN_IBM_GET_CONFIG_ADDR_INFO2); + ibm_get_config_addr_info = rtas_function_token(RTAS_FN_IBM_GET_CONFIG_ADDR_INFO); + ibm_configure_pe = rtas_function_token(RTAS_FN_IBM_CONFIGURE_PE); /* * ibm,configure-pe and ibm,configure-bridge have the same semantics, @@ -830,7 +830,7 @@ static int __init eeh_pseries_init(void) * ibm,configure-pe then fall back to using ibm,configure-bridge. */ if (ibm_configure_pe == RTAS_UNKNOWN_SERVICE) - ibm_configure_pe = rtas_token("ibm,configure-bridge"); + ibm_configure_pe = rtas_function_token(RTAS_FN_IBM_CONFIGURE_BRIDGE); /* * Necessary sanity check. We needn't check "get-config-addr-info" diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c index 090ae5a1e0f5..982e5e4b5e06 100644 --- a/arch/powerpc/platforms/pseries/hotplug-cpu.c +++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c @@ -855,8 +855,8 @@ static int __init pseries_cpu_hotplug_init(void) ppc_md.cpu_release = dlpar_cpu_release; #endif /* CONFIG_ARCH_CPU_PROBE_RELEASE */ - rtas_stop_self_token = rtas_token("stop-self"); - qcss_tok = rtas_token("query-cpu-stopped-state"); + rtas_stop_self_token = rtas_function_token(RTAS_FN_STOP_SELF); + qcss_tok = rtas_function_token(RTAS_FN_QUERY_CPU_STOPPED_STATE); if (rtas_stop_self_token == RTAS_UNKNOWN_SERVICE || qcss_tok == RTAS_UNKNOWN_SERVICE) { diff --git a/arch/powerpc/platforms/pseries/io_event_irq.c b/arch/powerpc/platforms/pseries/io_event_irq.c index 7b74d4d34e9a..f411d4fe7b24 100644 --- a/arch/powerpc/platforms/pseries/io_event_irq.c +++ b/arch/powerpc/platforms/pseries/io_event_irq.c @@ -143,7 +143,7 @@ static int __init ioei_init(void) { struct device_node *np; - ioei_check_exception_token = rtas_token("check-exception"); + ioei_check_exception_token = rtas_function_token(RTAS_FN_CHECK_EXCEPTION); if (ioei_check_exception_token == RTAS_UNKNOWN_SERVICE) return -ENODEV; diff --git a/arch/powerpc/platforms/pseries/mobility.c b/arch/powerpc/platforms/pseries/mobility.c index 4cea71aa0f41..643d309d1bd0 100644 --- a/arch/powerpc/platforms/pseries/mobility.c +++ b/arch/powerpc/platforms/pseries/mobility.c @@ -195,7 +195,7 @@ static int update_dt_node(struct device_node *dn, s32 scope) u32 nprops; u32 vd; - update_properties_token = rtas_token("ibm,update-properties"); + update_properties_token = rtas_function_token(RTAS_FN_IBM_UPDATE_PROPERTIES); if (update_properties_token == RTAS_UNKNOWN_SERVICE) return -EINVAL; @@ -306,7 +306,7 @@ static int pseries_devicetree_update(s32 scope) int update_nodes_token; int rc; - update_nodes_token = rtas_token("ibm,update-nodes"); + update_nodes_token = rtas_function_token(RTAS_FN_IBM_UPDATE_NODES); if (update_nodes_token == RTAS_UNKNOWN_SERVICE) return 0; diff --git a/arch/powerpc/platforms/pseries/msi.c b/arch/powerpc/platforms/pseries/msi.c index 3f05507e444d..423ee1d5bd94 100644 --- a/arch/powerpc/platforms/pseries/msi.c +++ b/arch/powerpc/platforms/pseries/msi.c @@ -679,8 +679,8 @@ static void rtas_msi_pci_irq_fixup(struct pci_dev *pdev) static int rtas_msi_init(void) { - query_token = rtas_token("ibm,query-interrupt-source-number"); - change_token = rtas_token("ibm,change-msi"); + query_token = rtas_function_token(RTAS_FN_IBM_QUERY_INTERRUPT_SOURCE_NUMBER); + change_token = rtas_function_token(RTAS_FN_IBM_CHANGE_MSI); if ((query_token == RTAS_UNKNOWN_SERVICE) || (change_token == RTAS_UNKNOWN_SERVICE)) { diff --git a/arch/powerpc/platforms/pseries/nvram.c b/arch/powerpc/platforms/pseries/nvram.c index cbf1720eb4aa..8130c37962c0 100644 --- a/arch/powerpc/platforms/pseries/nvram.c +++ b/arch/powerpc/platforms/pseries/nvram.c @@ -227,8 +227,8 @@ int __init pSeries_nvram_init(void) nvram_size = be32_to_cpup(nbytes_p); - nvram_fetch = rtas_token("nvram-fetch"); - nvram_store = rtas_token("nvram-store"); + nvram_fetch = rtas_function_token(RTAS_FN_NVRAM_FETCH); + nvram_store = rtas_function_token(RTAS_FN_NVRAM_STORE); printk(KERN_INFO "PPC64 nvram contains %d bytes\n", nvram_size); of_node_put(nvram); diff --git a/arch/powerpc/platforms/pseries/papr-sysparm.c b/arch/powerpc/platforms/pseries/papr-sysparm.c index 2bb5c816399b..fedc61599e6c 100644 --- a/arch/powerpc/platforms/pseries/papr-sysparm.c +++ b/arch/powerpc/platforms/pseries/papr-sysparm.c @@ -50,7 +50,7 @@ void papr_sysparm_buf_free(struct papr_sysparm_buf *buf) int papr_sysparm_get(papr_sysparm_t param, struct papr_sysparm_buf *buf) { - const s32 token = rtas_token("ibm,get-system-parameter"); + const s32 token = rtas_function_token(RTAS_FN_IBM_GET_SYSTEM_PARAMETER); struct rtas_work_area *work_area; s32 fwrc; int ret; @@ -102,7 +102,7 @@ int papr_sysparm_get(papr_sysparm_t param, struct papr_sysparm_buf *buf) int papr_sysparm_set(papr_sysparm_t param, const struct papr_sysparm_buf *buf) { - const s32 token = rtas_token("ibm,set-system-parameter"); + const s32 token = rtas_function_token(RTAS_FN_IBM_SET_SYSTEM_PARAMETER); struct rtas_work_area *work_area; s32 fwrc; int ret; diff --git a/arch/powerpc/platforms/pseries/pci.c b/arch/powerpc/platforms/pseries/pci.c index 6e671c3809ec..60e0a58928ef 100644 --- a/arch/powerpc/platforms/pseries/pci.c +++ b/arch/powerpc/platforms/pseries/pci.c @@ -60,7 +60,7 @@ static int pseries_send_map_pe(struct pci_dev *pdev, u16 num_vfs, struct pci_dn *pdn; int rc; unsigned long buid, addr; - int ibm_map_pes = rtas_token("ibm,open-sriov-map-pe-number"); + int ibm_map_pes = rtas_function_token(RTAS_FN_IBM_OPEN_SRIOV_MAP_PE_NUMBER); if (ibm_map_pes == RTAS_UNKNOWN_SERVICE) return -EINVAL; diff --git a/arch/powerpc/platforms/pseries/ras.c b/arch/powerpc/platforms/pseries/ras.c index f12516c3998c..adafd593d9d3 100644 --- a/arch/powerpc/platforms/pseries/ras.c +++ b/arch/powerpc/platforms/pseries/ras.c @@ -155,7 +155,7 @@ static int __init init_ras_IRQ(void) { struct device_node *np; - ras_check_exception_token = rtas_token("check-exception"); + ras_check_exception_token = rtas_function_token(RTAS_FN_CHECK_EXCEPTION); /* Internal Errors */ np = of_find_node_by_path("/event-sources/internal-errors"); diff --git a/arch/powerpc/platforms/pseries/rtas-work-area.c b/arch/powerpc/platforms/pseries/rtas-work-area.c index 1ee63335bd4b..b37d52f40360 100644 --- a/arch/powerpc/platforms/pseries/rtas-work-area.c +++ b/arch/powerpc/platforms/pseries/rtas-work-area.c @@ -203,7 +203,7 @@ void __init rtas_work_area_reserve_arena(const phys_addr_t limit) * So set up the arena if we find that, with a fallback to * ibm,configure-connector, just in case. */ - if (rtas_service_present("ibm,get-system-parameter") || - rtas_service_present("ibm,configure-connector")) + if (rtas_function_implemented(RTAS_FN_IBM_GET_SYSTEM_PARAMETER) || + rtas_function_implemented(RTAS_FN_IBM_CONFIGURE_CONNECTOR)) rwa_state.arena = memblock_alloc_try_nid(size, align, min, limit, nid); } diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index 420a2fa48292..4a0cec8cf623 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -136,11 +136,11 @@ static void __init fwnmi_init(void) #endif int ibm_nmi_register_token; - ibm_nmi_register_token = rtas_token("ibm,nmi-register"); + ibm_nmi_register_token = rtas_function_token(RTAS_FN_IBM_NMI_REGISTER); if (ibm_nmi_register_token == RTAS_UNKNOWN_SERVICE) return; - ibm_nmi_interlock_token = rtas_token("ibm,nmi-interlock"); + ibm_nmi_interlock_token = rtas_function_token(RTAS_FN_IBM_NMI_INTERLOCK); if (WARN_ON(ibm_nmi_interlock_token == RTAS_UNKNOWN_SERVICE)) return; @@ -1071,14 +1071,14 @@ static void __init pseries_init(void) static void pseries_power_off(void) { int rc; - int rtas_poweroff_ups_token = rtas_token("ibm,power-off-ups"); + int rtas_poweroff_ups_token = rtas_function_token(RTAS_FN_IBM_POWER_OFF_UPS); if (rtas_flash_term_hook) rtas_flash_term_hook(SYS_POWER_OFF); if (rtas_poweron_auto == 0 || rtas_poweroff_ups_token == RTAS_UNKNOWN_SERVICE) { - rc = rtas_call(rtas_token("power-off"), 2, 1, NULL, -1, -1); + rc = rtas_call(rtas_function_token(RTAS_FN_POWER_OFF), 2, 1, NULL, -1, -1); printk(KERN_INFO "RTAS power-off returned %d\n", rc); } else { rc = rtas_call(rtas_poweroff_ups_token, 0, 1, NULL); diff --git a/arch/powerpc/platforms/pseries/smp.c b/arch/powerpc/platforms/pseries/smp.c index 2bcfee86ff87..c597711ef20a 100644 --- a/arch/powerpc/platforms/pseries/smp.c +++ b/arch/powerpc/platforms/pseries/smp.c @@ -55,7 +55,7 @@ static cpumask_var_t of_spin_mask; int smp_query_cpu_stopped(unsigned int pcpu) { int cpu_status, status; - int qcss_tok = rtas_token("query-cpu-stopped-state"); + int qcss_tok = rtas_function_token(RTAS_FN_QUERY_CPU_STOPPED_STATE); if (qcss_tok == RTAS_UNKNOWN_SERVICE) { printk_once(KERN_INFO @@ -108,7 +108,7 @@ static inline int smp_startup_cpu(unsigned int lcpu) * If the RTAS start-cpu token does not exist then presume the * cpu is already spinning. */ - start_cpu = rtas_token("start-cpu"); + start_cpu = rtas_function_token(RTAS_FN_START_CPU); if (start_cpu == RTAS_UNKNOWN_SERVICE) return 1; @@ -266,7 +266,7 @@ void __init smp_init_pseries(void) * We know prom_init will not have started them if RTAS supports * query-cpu-stopped-state. */ - if (rtas_token("query-cpu-stopped-state") == RTAS_UNKNOWN_SERVICE) { + if (rtas_function_token(RTAS_FN_QUERY_CPU_STOPPED_STATE) == RTAS_UNKNOWN_SERVICE) { if (cpu_has_feature(CPU_FTR_SMT)) { for_each_present_cpu(i) { if (cpu_thread_in_core(i) == 0) diff --git a/arch/powerpc/sysdev/xics/ics-rtas.c b/arch/powerpc/sysdev/xics/ics-rtas.c index f8320f8e5bc7..b772a833d9b7 100644 --- a/arch/powerpc/sysdev/xics/ics-rtas.c +++ b/arch/powerpc/sysdev/xics/ics-rtas.c @@ -200,10 +200,10 @@ static struct ics ics_rtas = { __init int ics_rtas_init(void) { - ibm_get_xive = rtas_token("ibm,get-xive"); - ibm_set_xive = rtas_token("ibm,set-xive"); - ibm_int_on = rtas_token("ibm,int-on"); - ibm_int_off = rtas_token("ibm,int-off"); + ibm_get_xive = rtas_function_token(RTAS_FN_IBM_GET_XIVE); + ibm_set_xive = rtas_function_token(RTAS_FN_IBM_SET_XIVE); + ibm_int_on = rtas_function_token(RTAS_FN_IBM_INT_ON); + ibm_int_off = rtas_function_token(RTAS_FN_IBM_INT_OFF); /* We enable the RTAS "ICS" if RTAS is present with the * appropriate tokens diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c index 0da66bc4823d..73c620c2a3a1 100644 --- a/arch/powerpc/xmon/xmon.c +++ b/arch/powerpc/xmon/xmon.c @@ -76,9 +76,6 @@ static cpumask_t xmon_batch_cpus = CPU_MASK_NONE; #define xmon_owner 0 #endif /* CONFIG_SMP */ -#ifdef CONFIG_PPC_PSERIES -static int set_indicator_token = RTAS_UNKNOWN_SERVICE; -#endif static unsigned long in_xmon __read_mostly = 0; static int xmon_on = IS_ENABLED(CONFIG_XMON_DEFAULT); static bool xmon_is_ro = IS_ENABLED(CONFIG_XMON_DEFAULT_RO_MODE); @@ -398,6 +395,7 @@ static inline void disable_surveillance(void) #ifdef CONFIG_PPC_PSERIES /* Since this can't be a module, args should end up below 4GB. */ static struct rtas_args args; + const s32 token = rtas_function_token(RTAS_FN_SET_INDICATOR); /* * At this point we have got all the cpus we can into @@ -406,10 +404,10 @@ static inline void disable_surveillance(void) * If we did try to take rtas.lock there would be a * real possibility of deadlock. */ - if (set_indicator_token == RTAS_UNKNOWN_SERVICE) + if (token == RTAS_UNKNOWN_SERVICE) return; - rtas_call_unlocked(&args, set_indicator_token, 3, 1, NULL, + rtas_call_unlocked(&args, token, 3, 1, NULL, SURVEILLANCE_TOKEN, 0, 0); #endif /* CONFIG_PPC_PSERIES */ @@ -3976,14 +3974,6 @@ static void xmon_init(int enable) __debugger_iabr_match = xmon_iabr_match; __debugger_break_match = xmon_break_match; __debugger_fault_handler = xmon_fault_handler; - -#ifdef CONFIG_PPC_PSERIES - /* - * Get the token here to avoid trying to get a lock - * during the crash, causing a deadlock. - */ - set_indicator_token = rtas_token("set-indicator"); -#endif } else { __debugger = NULL; __debugger_ipi = NULL; -- cgit