X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=drivers%2Facpi%2Fprocessor_perflib.c;h=22c7bb66c2005c4956a241c7a31a566d9ae6b073;hb=064b53dbcc977dbf2753a67c2b8fc1c061d74f21;hp=1f0d6256302fc61afee4a9b631b710ab2a07d395;hpb=2d986010ad13a00b83851238d52601d6092df40e;p=powerpc.git diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c index 1f0d625630..22c7bb66c2 100644 --- a/drivers/acpi/processor_perflib.c +++ b/drivers/acpi/processor_perflib.c @@ -26,7 +26,6 @@ * */ - #include #include #include @@ -42,14 +41,12 @@ #include #include - #define ACPI_PROCESSOR_COMPONENT 0x01000000 #define ACPI_PROCESSOR_CLASS "processor" #define ACPI_PROCESSOR_DRIVER_NAME "ACPI Processor Driver" #define ACPI_PROCESSOR_FILE_PERFORMANCE "performance" #define _COMPONENT ACPI_PROCESSOR_COMPONENT -ACPI_MODULE_NAME ("acpi_processor") - +ACPI_MODULE_NAME("acpi_processor") static DECLARE_MUTEX(performance_sem); @@ -69,8 +66,7 @@ static DECLARE_MUTEX(performance_sem); static int acpi_processor_ppc_status = 0; static int acpi_processor_ppc_notifier(struct notifier_block *nb, - unsigned long event, - void *data) + unsigned long event, void *data) { struct cpufreq_policy *policy = data; struct acpi_processor *pr; @@ -85,7 +81,7 @@ static int acpi_processor_ppc_notifier(struct notifier_block *nb, if (!pr || !pr->performance) goto out; - ppc = (unsigned int) pr->performance_platform_limit; + ppc = (unsigned int)pr->performance_platform_limit; if (!ppc) goto out; @@ -93,26 +89,23 @@ static int acpi_processor_ppc_notifier(struct notifier_block *nb, goto out; cpufreq_verify_within_limits(policy, 0, - pr->performance->states[ppc].core_frequency * 1000); + pr->performance->states[ppc]. + core_frequency * 1000); - out: + out: up(&performance_sem); return 0; } - static struct notifier_block acpi_ppc_notifier_block = { .notifier_call = acpi_processor_ppc_notifier, }; - -static int -acpi_processor_get_platform_limit ( - struct acpi_processor* pr) +static int acpi_processor_get_platform_limit(struct acpi_processor *pr) { - acpi_status status = 0; - unsigned long ppc = 0; + acpi_status status = 0; + unsigned long ppc = 0; ACPI_FUNCTION_TRACE("acpi_processor_get_platform_limit"); @@ -128,19 +121,17 @@ acpi_processor_get_platform_limit ( if (status != AE_NOT_FOUND) acpi_processor_ppc_status |= PPC_IN_USE; - if(ACPI_FAILURE(status) && status != AE_NOT_FOUND) { + if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error evaluating _PPC\n")); return_VALUE(-ENODEV); } - pr->performance_platform_limit = (int) ppc; + pr->performance_platform_limit = (int)ppc; return_VALUE(0); } - -int acpi_processor_ppc_has_changed( - struct acpi_processor *pr) +int acpi_processor_ppc_has_changed(struct acpi_processor *pr) { int ret = acpi_processor_get_platform_limit(pr); if (ret < 0) @@ -149,44 +140,44 @@ int acpi_processor_ppc_has_changed( return cpufreq_update_policy(pr->id); } - -void acpi_processor_ppc_init(void) { - if (!cpufreq_register_notifier(&acpi_ppc_notifier_block, CPUFREQ_POLICY_NOTIFIER)) +void acpi_processor_ppc_init(void) +{ + if (!cpufreq_register_notifier + (&acpi_ppc_notifier_block, CPUFREQ_POLICY_NOTIFIER)) acpi_processor_ppc_status |= PPC_REGISTERED; else - printk(KERN_DEBUG "Warning: Processor Platform Limit not supported.\n"); + printk(KERN_DEBUG + "Warning: Processor Platform Limit not supported.\n"); } - -void acpi_processor_ppc_exit(void) { +void acpi_processor_ppc_exit(void) +{ if (acpi_processor_ppc_status & PPC_REGISTERED) - cpufreq_unregister_notifier(&acpi_ppc_notifier_block, CPUFREQ_POLICY_NOTIFIER); + cpufreq_unregister_notifier(&acpi_ppc_notifier_block, + CPUFREQ_POLICY_NOTIFIER); acpi_processor_ppc_status &= ~PPC_REGISTERED; } - -static int -acpi_processor_get_performance_control ( - struct acpi_processor *pr) +static int acpi_processor_get_performance_control(struct acpi_processor *pr) { - int result = 0; - acpi_status status = 0; - struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL}; - union acpi_object *pct = NULL; - union acpi_object obj = {0}; + int result = 0; + acpi_status status = 0; + struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; + union acpi_object *pct = NULL; + union acpi_object obj = { 0 }; ACPI_FUNCTION_TRACE("acpi_processor_get_performance_control"); status = acpi_evaluate_object(pr->handle, "_PCT", NULL, &buffer); - if(ACPI_FAILURE(status)) { + if (ACPI_FAILURE(status)) { ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error evaluating _PCT\n")); return_VALUE(-ENODEV); } - pct = (union acpi_object *) buffer.pointer; + pct = (union acpi_object *)buffer.pointer; if (!pct || (pct->type != ACPI_TYPE_PACKAGE) - || (pct->package.count != 2)) { + || (pct->package.count != 2)) { ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid _PCT data\n")); result = -EFAULT; goto end; @@ -199,15 +190,15 @@ acpi_processor_get_performance_control ( obj = pct->package.elements[0]; if ((obj.type != ACPI_TYPE_BUFFER) - || (obj.buffer.length < sizeof(struct acpi_pct_register)) - || (obj.buffer.pointer == NULL)) { + || (obj.buffer.length < sizeof(struct acpi_pct_register)) + || (obj.buffer.pointer == NULL)) { ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Invalid _PCT data (control_register)\n")); + "Invalid _PCT data (control_register)\n")); result = -EFAULT; goto end; } - memcpy(&pr->performance->control_register, obj.buffer.pointer, sizeof(struct acpi_pct_register)); - + memcpy(&pr->performance->control_register, obj.buffer.pointer, + sizeof(struct acpi_pct_register)); /* * status_register @@ -216,44 +207,42 @@ acpi_processor_get_performance_control ( obj = pct->package.elements[1]; if ((obj.type != ACPI_TYPE_BUFFER) - || (obj.buffer.length < sizeof(struct acpi_pct_register)) - || (obj.buffer.pointer == NULL)) { + || (obj.buffer.length < sizeof(struct acpi_pct_register)) + || (obj.buffer.pointer == NULL)) { ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Invalid _PCT data (status_register)\n")); + "Invalid _PCT data (status_register)\n")); result = -EFAULT; goto end; } - memcpy(&pr->performance->status_register, obj.buffer.pointer, sizeof(struct acpi_pct_register)); + memcpy(&pr->performance->status_register, obj.buffer.pointer, + sizeof(struct acpi_pct_register)); -end: + end: acpi_os_free(buffer.pointer); return_VALUE(result); } - -static int -acpi_processor_get_performance_states ( - struct acpi_processor *pr) +static int acpi_processor_get_performance_states(struct acpi_processor *pr) { - int result = 0; - acpi_status status = AE_OK; - struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL}; - struct acpi_buffer format = {sizeof("NNNNNN"), "NNNNNN"}; - struct acpi_buffer state = {0, NULL}; - union acpi_object *pss = NULL; - int i; + int result = 0; + acpi_status status = AE_OK; + struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; + struct acpi_buffer format = { sizeof("NNNNNN"), "NNNNNN" }; + struct acpi_buffer state = { 0, NULL }; + union acpi_object *pss = NULL; + int i; ACPI_FUNCTION_TRACE("acpi_processor_get_performance_states"); status = acpi_evaluate_object(pr->handle, "_PSS", NULL, &buffer); - if(ACPI_FAILURE(status)) { + if (ACPI_FAILURE(status)) { ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error evaluating _PSS\n")); return_VALUE(-ENODEV); } - pss = (union acpi_object *) buffer.pointer; + pss = (union acpi_object *)buffer.pointer; if (!pss || (pss->type != ACPI_TYPE_PACKAGE)) { ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid _PSS data\n")); result = -EFAULT; @@ -261,10 +250,12 @@ acpi_processor_get_performance_states ( } ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d performance states\n", - pss->package.count)); + pss->package.count)); pr->performance->state_count = pss->package.count; - pr->performance->states = kmalloc(sizeof(struct acpi_processor_px) * pss->package.count, GFP_KERNEL); + pr->performance->states = + kmalloc(sizeof(struct acpi_processor_px) * pss->package.count, + GFP_KERNEL); if (!pr->performance->states) { result = -ENOMEM; goto end; @@ -280,46 +271,44 @@ acpi_processor_get_performance_states ( ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Extracting state %d\n", i)); status = acpi_extract_package(&(pss->package.elements[i]), - &format, &state); + &format, &state); if (ACPI_FAILURE(status)) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid _PSS data\n")); + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, + "Invalid _PSS data\n")); result = -EFAULT; kfree(pr->performance->states); goto end; } ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "State [%d]: core_frequency[%d] power[%d] transition_latency[%d] bus_master_latency[%d] control[0x%x] status[0x%x]\n", - i, - (u32) px->core_frequency, - (u32) px->power, - (u32) px->transition_latency, - (u32) px->bus_master_latency, - (u32) px->control, - (u32) px->status)); + "State [%d]: core_frequency[%d] power[%d] transition_latency[%d] bus_master_latency[%d] control[0x%x] status[0x%x]\n", + i, + (u32) px->core_frequency, + (u32) px->power, + (u32) px->transition_latency, + (u32) px->bus_master_latency, + (u32) px->control, (u32) px->status)); if (!px->core_frequency) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid _PSS data: freq is zero\n")); + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, + "Invalid _PSS data: freq is zero\n")); result = -EFAULT; kfree(pr->performance->states); goto end; } } -end: + end: acpi_os_free(buffer.pointer); return_VALUE(result); } - -static int -acpi_processor_get_performance_info ( - struct acpi_processor *pr) +static int acpi_processor_get_performance_info(struct acpi_processor *pr) { - int result = 0; - acpi_status status = AE_OK; - acpi_handle handle = NULL; + int result = 0; + acpi_status status = AE_OK; + acpi_handle handle = NULL; ACPI_FUNCTION_TRACE("acpi_processor_get_performance_info"); @@ -331,7 +320,7 @@ acpi_processor_get_performance_info ( status = acpi_get_handle(pr->handle, "_PCT", &handle); if (ACPI_FAILURE(status)) { ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "ACPI-based processor performance control unavailable\n")); + "ACPI-based processor performance control unavailable\n")); return_VALUE(-ENODEV); } @@ -350,10 +339,10 @@ acpi_processor_get_performance_info ( return_VALUE(0); } - -int acpi_processor_notify_smm(struct module *calling_module) { - acpi_status status; - static int is_done = 0; +int acpi_processor_notify_smm(struct module *calling_module) +{ + acpi_status status; + static int is_done = 0; ACPI_FUNCTION_TRACE("acpi_processor_notify_smm"); @@ -371,8 +360,7 @@ int acpi_processor_notify_smm(struct module *calling_module) { if (is_done > 0) { module_put(calling_module); return_VALUE(0); - } - else if (is_done < 0) { + } else if (is_done < 0) { module_put(calling_module); return_VALUE(is_done); } @@ -380,28 +368,30 @@ int acpi_processor_notify_smm(struct module *calling_module) { is_done = -EIO; /* Can't write pstate_cnt to smi_cmd if either value is zero */ - if ((!acpi_fadt.smi_cmd) || - (!acpi_fadt.pstate_cnt)) { - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "No SMI port or pstate_cnt\n")); + if ((!acpi_fadt.smi_cmd) || (!acpi_fadt.pstate_cnt)) { + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No SMI port or pstate_cnt\n")); module_put(calling_module); return_VALUE(0); } - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Writing pstate_cnt [0x%x] to smi_cmd [0x%x]\n", acpi_fadt.pstate_cnt, acpi_fadt.smi_cmd)); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "Writing pstate_cnt [0x%x] to smi_cmd [0x%x]\n", + acpi_fadt.pstate_cnt, acpi_fadt.smi_cmd)); /* FADT v1 doesn't support pstate_cnt, many BIOS vendors use * it anyway, so we need to support it... */ if (acpi_fadt_is_v1) { - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Using v1.0 FADT reserved value for pstate_cnt\n")); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "Using v1.0 FADT reserved value for pstate_cnt\n")); } - status = acpi_os_write_port (acpi_fadt.smi_cmd, - (u32) acpi_fadt.pstate_cnt, 8); - if (ACPI_FAILURE (status)) { + status = acpi_os_write_port(acpi_fadt.smi_cmd, + (u32) acpi_fadt.pstate_cnt, 8); + if (ACPI_FAILURE(status)) { ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Failed to write pstate_cnt [0x%x] to " - "smi_cmd [0x%x]\n", acpi_fadt.pstate_cnt, acpi_fadt.smi_cmd)); + "smi_cmd [0x%x]\n", acpi_fadt.pstate_cnt, + acpi_fadt.smi_cmd)); module_put(calling_module); return_VALUE(status); } @@ -415,24 +405,24 @@ int acpi_processor_notify_smm(struct module *calling_module) { return_VALUE(0); } -EXPORT_SYMBOL(acpi_processor_notify_smm); +EXPORT_SYMBOL(acpi_processor_notify_smm); #ifdef CONFIG_X86_ACPI_CPUFREQ_PROC_INTF /* /proc/acpi/processor/../performance interface (DEPRECATED) */ static int acpi_processor_perf_open_fs(struct inode *inode, struct file *file); static struct file_operations acpi_processor_perf_fops = { - .open = acpi_processor_perf_open_fs, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, + .open = acpi_processor_perf_open_fs, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, }; static int acpi_processor_perf_seq_show(struct seq_file *seq, void *offset) { - struct acpi_processor *pr = (struct acpi_processor *)seq->private; - int i; + struct acpi_processor *pr = (struct acpi_processor *)seq->private; + int i; ACPI_FUNCTION_TRACE("acpi_processor_perf_seq_show"); @@ -445,42 +435,40 @@ static int acpi_processor_perf_seq_show(struct seq_file *seq, void *offset) } seq_printf(seq, "state count: %d\n" - "active state: P%d\n", - pr->performance->state_count, - pr->performance->state); + "active state: P%d\n", + pr->performance->state_count, pr->performance->state); seq_puts(seq, "states:\n"); for (i = 0; i < pr->performance->state_count; i++) - seq_printf(seq, " %cP%d: %d MHz, %d mW, %d uS\n", - (i == pr->performance->state?'*':' '), i, - (u32) pr->performance->states[i].core_frequency, - (u32) pr->performance->states[i].power, - (u32) pr->performance->states[i].transition_latency); - -end: + seq_printf(seq, + " %cP%d: %d MHz, %d mW, %d uS\n", + (i == pr->performance->state ? '*' : ' '), i, + (u32) pr->performance->states[i].core_frequency, + (u32) pr->performance->states[i].power, + (u32) pr->performance->states[i].transition_latency); + + end: return_VALUE(0); } static int acpi_processor_perf_open_fs(struct inode *inode, struct file *file) { return single_open(file, acpi_processor_perf_seq_show, - PDE(inode)->data); + PDE(inode)->data); } static ssize_t -acpi_processor_write_performance ( - struct file *file, - const char __user *buffer, - size_t count, - loff_t *data) +acpi_processor_write_performance(struct file *file, + const char __user * buffer, + size_t count, loff_t * data) { - int result = 0; - struct seq_file *m = (struct seq_file *) file->private_data; - struct acpi_processor *pr = (struct acpi_processor *) m->private; + int result = 0; + struct seq_file *m = (struct seq_file *)file->private_data; + struct acpi_processor *pr = (struct acpi_processor *)m->private; struct acpi_processor_performance *perf; - char state_string[12] = {'\0'}; - unsigned int new_state = 0; - struct cpufreq_policy policy; + char state_string[12] = { '\0' }; + unsigned int new_state = 0; + struct cpufreq_policy policy; ACPI_FUNCTION_TRACE("acpi_processor_write_performance"); @@ -513,12 +501,10 @@ acpi_processor_write_performance ( return_VALUE(count); } -static void -acpi_cpufreq_add_file ( - struct acpi_processor *pr) +static void acpi_cpufreq_add_file(struct acpi_processor *pr) { - struct proc_dir_entry *entry = NULL; - struct acpi_device *device = NULL; + struct proc_dir_entry *entry = NULL; + struct acpi_device *device = NULL; ACPI_FUNCTION_TRACE("acpi_cpufreq_addfile"); @@ -527,11 +513,12 @@ acpi_cpufreq_add_file ( /* add file 'performance' [R/W] */ entry = create_proc_entry(ACPI_PROCESSOR_FILE_PERFORMANCE, - S_IFREG|S_IRUGO|S_IWUSR, acpi_device_dir(device)); + S_IFREG | S_IRUGO | S_IWUSR, + acpi_device_dir(device)); if (!entry) ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Unable to create '%s' fs entry\n", - ACPI_PROCESSOR_FILE_PERFORMANCE)); + "Unable to create '%s' fs entry\n", + ACPI_PROCESSOR_FILE_PERFORMANCE)); else { entry->proc_fops = &acpi_processor_perf_fops; entry->proc_fops->write = acpi_processor_write_performance; @@ -541,11 +528,9 @@ acpi_cpufreq_add_file ( return_VOID; } -static void -acpi_cpufreq_remove_file ( - struct acpi_processor *pr) +static void acpi_cpufreq_remove_file(struct acpi_processor *pr) { - struct acpi_device *device = NULL; + struct acpi_device *device = NULL; ACPI_FUNCTION_TRACE("acpi_cpufreq_addfile"); @@ -554,21 +539,25 @@ acpi_cpufreq_remove_file ( /* remove file 'performance' */ remove_proc_entry(ACPI_PROCESSOR_FILE_PERFORMANCE, - acpi_device_dir(device)); + acpi_device_dir(device)); return_VOID; } #else -static void acpi_cpufreq_add_file (struct acpi_processor *pr) { return; } -static void acpi_cpufreq_remove_file (struct acpi_processor *pr) { return; } -#endif /* CONFIG_X86_ACPI_CPUFREQ_PROC_INTF */ - +static void acpi_cpufreq_add_file(struct acpi_processor *pr) +{ + return; +} +static void acpi_cpufreq_remove_file(struct acpi_processor *pr) +{ + return; +} +#endif /* CONFIG_X86_ACPI_CPUFREQ_PROC_INTF */ int -acpi_processor_register_performance ( - struct acpi_processor_performance * performance, - unsigned int cpu) +acpi_processor_register_performance(struct acpi_processor_performance + *performance, unsigned int cpu) { struct acpi_processor *pr; @@ -603,13 +592,12 @@ acpi_processor_register_performance ( up(&performance_sem); return_VALUE(0); } -EXPORT_SYMBOL(acpi_processor_register_performance); +EXPORT_SYMBOL(acpi_processor_register_performance); void -acpi_processor_unregister_performance ( - struct acpi_processor_performance * performance, - unsigned int cpu) +acpi_processor_unregister_performance(struct acpi_processor_performance + *performance, unsigned int cpu) { struct acpi_processor *pr; @@ -632,4 +620,5 @@ acpi_processor_unregister_performance ( return_VOID; } + EXPORT_SYMBOL(acpi_processor_unregister_performance);