diff options
Diffstat (limited to 'arch/ppc64')
| -rw-r--r-- | arch/ppc64/kernel/Makefile | 5 | ||||
| -rw-r--r-- | arch/ppc64/kernel/lparcfg.c | 612 | ||||
| -rw-r--r-- | arch/ppc64/kernel/proc_ppc64.c | 128 | ||||
| -rw-r--r-- | arch/ppc64/kernel/rtas_pci.c | 513 | ||||
| -rw-r--r-- | arch/ppc64/kernel/sysfs.c | 384 |
5 files changed, 1 insertions, 1641 deletions
diff --git a/arch/ppc64/kernel/Makefile b/arch/ppc64/kernel/Makefile index 048ba910f028..58b19f107656 100644 --- a/arch/ppc64/kernel/Makefile +++ b/arch/ppc64/kernel/Makefile @@ -15,7 +15,7 @@ obj-y += idle.o dma.o \ align.o \ udbg.o \ rtc.o \ - iommu.o sysfs.o vdso.o + iommu.o vdso.o obj-y += vdso32/ vdso64/ pci-obj-$(CONFIG_PPC_MULTIPLATFORM) += pci_dn.o pci_direct_iommu.o @@ -30,13 +30,10 @@ endif obj-$(CONFIG_PPC_PSERIES) += udbg_16550.o obj-$(CONFIG_KEXEC) += machine_kexec.o -obj-$(CONFIG_PROC_FS) += proc_ppc64.o obj-$(CONFIG_MODULES) += module.o ifneq ($(CONFIG_PPC_MERGE),y) obj-$(CONFIG_MODULES) += ppc_ksyms.o endif -obj-$(CONFIG_PPC_RTAS) += rtas_pci.o -obj-$(CONFIG_LPARCFG) += lparcfg.o obj-$(CONFIG_HVC_CONSOLE) += hvconsole.o ifneq ($(CONFIG_PPC_MERGE),y) obj-$(CONFIG_BOOTX_TEXT) += btext.o diff --git a/arch/ppc64/kernel/lparcfg.c b/arch/ppc64/kernel/lparcfg.c deleted file mode 100644 index a80ed307515c..000000000000 --- a/arch/ppc64/kernel/lparcfg.c +++ /dev/null @@ -1,612 +0,0 @@ -/* - * PowerPC64 LPAR Configuration Information Driver - * - * Dave Engebretsen engebret@us.ibm.com - * Copyright (c) 2003 Dave Engebretsen - * Will Schmidt willschm@us.ibm.com - * SPLPAR updates, Copyright (c) 2003 Will Schmidt IBM Corporation. - * seq_file updates, Copyright (c) 2004 Will Schmidt IBM Corporation. - * Nathan Lynch nathanl@austin.ibm.com - * Added lparcfg_write, Copyright (C) 2004 Nathan Lynch IBM Corporation. - * - * 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 driver creates a proc file at /proc/ppc64/lparcfg which contains - * keyword - value pairs that specify the configuration of the partition. - */ - -#include <linux/config.h> -#include <linux/module.h> -#include <linux/types.h> -#include <linux/errno.h> -#include <linux/proc_fs.h> -#include <linux/init.h> -#include <linux/seq_file.h> -#include <asm/uaccess.h> -#include <asm/iseries/hv_lp_config.h> -#include <asm/lppaca.h> -#include <asm/hvcall.h> -#include <asm/firmware.h> -#include <asm/rtas.h> -#include <asm/system.h> -#include <asm/time.h> -#include <asm/iseries/it_exp_vpd_panel.h> -#include <asm/prom.h> -#include <asm/systemcfg.h> - -#define MODULE_VERS "1.6" -#define MODULE_NAME "lparcfg" - -/* #define LPARCFG_DEBUG */ - -/* find a better place for this function... */ -void log_plpar_hcall_return(unsigned long rc, char *tag) -{ - if (rc == 0) /* success, return */ - return; -/* check for null tag ? */ - if (rc == H_Hardware) - printk(KERN_INFO - "plpar-hcall (%s) failed with hardware fault\n", tag); - else if (rc == H_Function) - printk(KERN_INFO - "plpar-hcall (%s) failed; function not allowed\n", tag); - else if (rc == H_Authority) - printk(KERN_INFO - "plpar-hcall (%s) failed; not authorized to this function\n", - tag); - else if (rc == H_Parameter) - printk(KERN_INFO "plpar-hcall (%s) failed; Bad parameter(s)\n", - tag); - else - printk(KERN_INFO - "plpar-hcall (%s) failed with unexpected rc(0x%lx)\n", - tag, rc); - -} - -static struct proc_dir_entry *proc_ppc64_lparcfg; -#define LPARCFG_BUFF_SIZE 4096 - -#ifdef CONFIG_PPC_ISERIES - -/* - * For iSeries legacy systems, the PPA purr function is available from the - * emulated_time_base field in the paca. - */ -static unsigned long get_purr(void) -{ - unsigned long sum_purr = 0; - int cpu; - struct paca_struct *lpaca; - - for_each_cpu(cpu) { - lpaca = paca + cpu; - sum_purr += lpaca->lppaca.emulated_time_base; - -#ifdef PURR_DEBUG - printk(KERN_INFO "get_purr for cpu (%d) has value (%ld) \n", - cpu, lpaca->lppaca.emulated_time_base); -#endif - } - return sum_purr; -} - -#define lparcfg_write NULL - -/* - * Methods used to fetch LPAR data when running on an iSeries platform. - */ -static int lparcfg_data(struct seq_file *m, void *v) -{ - unsigned long pool_id, lp_index; - int shared, entitled_capacity, max_entitled_capacity; - int processors, max_processors; - struct paca_struct *lpaca = get_paca(); - unsigned long purr = get_purr(); - - seq_printf(m, "%s %s \n", MODULE_NAME, MODULE_VERS); - - shared = (int)(lpaca->lppaca_ptr->shared_proc); - seq_printf(m, "serial_number=%c%c%c%c%c%c%c\n", - e2a(xItExtVpdPanel.mfgID[2]), - e2a(xItExtVpdPanel.mfgID[3]), - e2a(xItExtVpdPanel.systemSerial[1]), - e2a(xItExtVpdPanel.systemSerial[2]), - e2a(xItExtVpdPanel.systemSerial[3]), - e2a(xItExtVpdPanel.systemSerial[4]), - e2a(xItExtVpdPanel.systemSerial[5])); - - seq_printf(m, "system_type=%c%c%c%c\n", - e2a(xItExtVpdPanel.machineType[0]), - e2a(xItExtVpdPanel.machineType[1]), - e2a(xItExtVpdPanel.machineType[2]), - e2a(xItExtVpdPanel.machineType[3])); - - lp_index = HvLpConfig_getLpIndex(); - seq_printf(m, "partition_id=%d\n", (int)lp_index); - - seq_printf(m, "system_active_processors=%d\n", - (int)HvLpConfig_getSystemPhysicalProcessors()); - - seq_printf(m, "system_potential_processors=%d\n", - (int)HvLpConfig_getSystemPhysicalProcessors()); - - processors = (int)HvLpConfig_getPhysicalProcessors(); - seq_printf(m, "partition_active_processors=%d\n", processors); - - max_processors = (int)HvLpConfig_getMaxPhysicalProcessors(); - seq_printf(m, "partition_potential_processors=%d\n", max_processors); - - if (shared) { - entitled_capacity = HvLpConfig_getSharedProcUnits(); - max_entitled_capacity = HvLpConfig_getMaxSharedProcUnits(); - } else { - entitled_capacity = processors * 100; - max_entitled_capacity = max_processors * 100; - } - seq_printf(m, "partition_entitled_capacity=%d\n", entitled_capacity); - - seq_printf(m, "partition_max_entitled_capacity=%d\n", - max_entitled_capacity); - - if (shared) { - pool_id = HvLpConfig_getSharedPoolIndex(); - seq_printf(m, "pool=%d\n", (int)pool_id); - seq_printf(m, "pool_capacity=%d\n", - (int)(HvLpConfig_getNumProcsInSharedPool(pool_id) * - 100)); - seq_printf(m, "purr=%ld\n", purr); - } - - seq_printf(m, "shared_processor_mode=%d\n", shared); - - return 0; -} -#endif /* CONFIG_PPC_ISERIES */ - -#ifdef CONFIG_PPC_PSERIES -/* - * Methods used to fetch LPAR data when running on a pSeries platform. - */ - -/* - * H_GET_PPP hcall returns info in 4 parms. - * entitled_capacity,unallocated_capacity, - * aggregation, resource_capability). - * - * R4 = Entitled Processor Capacity Percentage. - * R5 = Unallocated Processor Capacity Percentage. - * R6 (AABBCCDDEEFFGGHH). - * XXXX - reserved (0) - * XXXX - reserved (0) - * XXXX - Group Number - * XXXX - Pool Number. - * R7 (IIJJKKLLMMNNOOPP). - * XX - reserved. (0) - * XX - bit 0-6 reserved (0). bit 7 is Capped indicator. - * XX - variable processor Capacity Weight - * XX - Unallocated Variable Processor Capacity Weight. - * XXXX - Active processors in Physical Processor Pool. - * XXXX - Processors active on platform. - */ -static unsigned int h_get_ppp(unsigned long *entitled, - unsigned long *unallocated, - unsigned long *aggregation, - unsigned long *resource) -{ - unsigned long rc; - rc = plpar_hcall_4out(H_GET_PPP, 0, 0, 0, 0, entitled, unallocated, - aggregation, resource); - - log_plpar_hcall_return(rc, "H_GET_PPP"); - - return rc; -} - -static void h_pic(unsigned long *pool_idle_time, unsigned long *num_procs) -{ - unsigned long rc; - unsigned long dummy; - rc = plpar_hcall(H_PIC, 0, 0, 0, 0, pool_idle_time, num_procs, &dummy); - - log_plpar_hcall_return(rc, "H_PIC"); -} - -static unsigned long get_purr(void); - -/* Track sum of all purrs across all processors. This is used to further */ -/* calculate usage values by different applications */ - -static unsigned long get_purr(void) -{ - unsigned long sum_purr = 0; - int cpu; - struct cpu_usage *cu; - - for_each_cpu(cpu) { - cu = &per_cpu(cpu_usage_array, cpu); - sum_purr += cu->current_tb; - } - return sum_purr; -} - -#define SPLPAR_CHARACTERISTICS_TOKEN 20 -#define SPLPAR_MAXLENGTH 1026*(sizeof(char)) - -/* - * parse_system_parameter_string() - * Retrieve the potential_processors, max_entitled_capacity and friends - * through the get-system-parameter rtas call. Replace keyword strings as - * necessary. - */ -static void parse_system_parameter_string(struct seq_file *m) -{ - int call_status; - - char *local_buffer = kmalloc(SPLPAR_MAXLENGTH, GFP_KERNEL); - if (!local_buffer) { - printk(KERN_ERR "%s %s kmalloc failure at line %d \n", - __FILE__, __FUNCTION__, __LINE__); - return; - } - - spin_lock(&rtas_data_buf_lock); - memset(rtas_data_buf, 0, SPLPAR_MAXLENGTH); - call_status = rtas_call(rtas_token("ibm,get-system-parameter"), 3, 1, - NULL, - SPLPAR_CHARACTERISTICS_TOKEN, - __pa(rtas_data_buf)); - memcpy(local_buffer, rtas_data_buf, SPLPAR_MAXLENGTH); - spin_unlock(&rtas_data_buf_lock); - - if (call_status != 0) { - printk(KERN_INFO - "%s %s Error calling get-system-parameter (0x%x)\n", - __FILE__, __FUNCTION__, call_status); - } else { - int splpar_strlen; - int idx, w_idx; - char *workbuffer = kmalloc(SPLPAR_MAXLENGTH, GFP_KERNEL); - if (!workbuffer) { - printk(KERN_ERR "%s %s kmalloc failure at line %d \n", - __FILE__, __FUNCTION__, __LINE__); - kfree(local_buffer); - return; - } -#ifdef LPARCFG_DEBUG - printk(KERN_INFO "success calling get-system-parameter \n"); -#endif - splpar_strlen = local_buffer[0] * 16 + local_buffer[1]; - local_buffer += 2; /* step over strlen value */ - - memset(workbuffer, 0, SPLPAR_MAXLENGTH); - w_idx = 0; - idx = 0; - while ((*local_buffer) && (idx < splpar_strlen)) { - workbuffer[w_idx++] = local_buffer[idx++]; - if ((local_buffer[idx] == ',') - || (local_buffer[idx] == '\0')) { - workbuffer[w_idx] = '\0'; - if (w_idx) { - /* avoid the empty string */ - seq_printf(m, "%s\n", workbuffer); - } - memset(workbuffer, 0, SPLPAR_MAXLENGTH); - idx++; /* skip the comma */ - w_idx = 0; - } else if (local_buffer[idx] == '=') { - /* code here to replace workbuffer contents - with different keyword strings */ - if (0 == strcmp(workbuffer, "MaxEntCap")) { - strcpy(workbuffer, - "partition_max_entitled_capacity"); - w_idx = strlen(workbuffer); - } - if (0 == strcmp(workbuffer, "MaxPlatProcs")) { - strcpy(workbuffer, - "system_potential_processors"); - w_idx = strlen(workbuffer); - } - } - } - kfree(workbuffer); - local_buffer -= 2; /* back up over strlen value */ - } - kfree(local_buffer); -} - -static int lparcfg_count_active_processors(void); - -/* Return the number of processors in the system. - * This function reads through the device tree and counts - * the virtual processors, this does not include threads. - */ -static int lparcfg_count_active_processors(void) -{ - struct device_node *cpus_dn = NULL; - int count = 0; - - while ((cpus_dn = of_find_node_by_type(cpus_dn, "cpu"))) { -#ifdef LPARCFG_DEBUG - printk(KERN_ERR "cpus_dn %p \n", cpus_dn); -#endif - count++; - } - return count; -} - -static int lparcfg_data(struct seq_file *m, void *v) -{ - int partition_potential_processors; - int partition_active_processors; - struct device_node *rootdn; - const char *model = ""; - const char *system_id = ""; - unsigned int *lp_index_ptr, lp_index = 0; - struct device_node *rtas_node; - int *lrdrp; - - rootdn = find_path_device("/"); - if (rootdn) { - model = get_property(rootdn, "model", NULL); - system_id = get_property(rootdn, "system-id", NULL); - lp_index_ptr = (unsigned int *) - get_property(rootdn, "ibm,partition-no", NULL); - if (lp_index_ptr) - lp_index = *lp_index_ptr; - } - - seq_printf(m, "%s %s \n", MODULE_NAME, MODULE_VERS); - - seq_printf(m, "serial_number=%s\n", system_id); - - seq_printf(m, "system_type=%s\n", model); - - seq_printf(m, "partition_id=%d\n", (int)lp_index); - - rtas_node = find_path_device("/rtas"); - lrdrp = (int *)get_property(rtas_node, "ibm,lrdr-capacity", NULL); - - if (lrdrp == NULL) { - partition_potential_processors = _systemcfg->processorCount; - } else { - partition_potential_processors = *(lrdrp + 4); - } - - partition_active_processors = lparcfg_count_active_processors(); - - if (firmware_has_feature(FW_FEATURE_SPLPAR)) { - unsigned long h_entitled, h_unallocated; - unsigned long h_aggregation, h_resource; - unsigned long pool_idle_time, pool_procs; - unsigned long purr; - - h_get_ppp(&h_entitled, &h_unallocated, &h_aggregation, - &h_resource); - - seq_printf(m, "R4=0x%lx\n", h_entitled); - seq_printf(m, "R5=0x%lx\n", h_unallocated); - seq_printf(m, "R6=0x%lx\n", h_aggregation); - seq_printf(m, "R7=0x%lx\n", h_resource); - - purr = get_purr(); - - /* this call handles the ibm,get-system-parameter contents */ - parse_system_parameter_string(m); - - seq_printf(m, "partition_entitled_capacity=%ld\n", h_entitled); - - seq_printf(m, "group=%ld\n", (h_aggregation >> 2 * 8) & 0xffff); - - seq_printf(m, "system_active_processors=%ld\n", - (h_resource >> 0 * 8) & 0xffff); - - /* pool related entries are apropriate for shared configs */ - if (paca[0].lppaca.shared_proc) { - - h_pic(&pool_idle_time, &pool_procs); - - seq_printf(m, "pool=%ld\n", - (h_aggregation >> 0 * 8) & 0xffff); - - /* report pool_capacity in percentage */ - seq_printf(m, "pool_capacity=%ld\n", - ((h_resource >> 2 * 8) & 0xffff) * 100); - - seq_printf(m, "pool_idle_time=%ld\n", pool_idle_time); - - seq_printf(m, "pool_num_procs=%ld\n", pool_procs); - } - - seq_printf(m, "unallocated_capacity_weight=%ld\n", - (h_resource >> 4 * 8) & 0xFF); - - seq_printf(m, "capacity_weight=%ld\n", - (h_resource >> 5 * 8) & 0xFF); - - seq_printf(m, "capped=%ld\n", (h_resource >> 6 * 8) & 0x01); - - seq_printf(m, "unallocated_capacity=%ld\n", h_unallocated); - - seq_printf(m, "purr=%ld\n", purr); - - } else { /* non SPLPAR case */ - - seq_printf(m, "system_active_processors=%d\n", - partition_potential_processors); - - seq_printf(m, "system_potential_processors=%d\n", - partition_potential_processors); - - seq_printf(m, "partition_max_entitled_capacity=%d\n", - partition_potential_processors * 100); - - seq_printf(m, "partition_entitled_capacity=%d\n", - partition_active_processors * 100); - } - - seq_printf(m, "partition_active_processors=%d\n", - partition_active_processors); - - seq_printf(m, "partition_potential_processors=%d\n", - partition_potential_processors); - - seq_printf(m, "shared_processor_mode=%d\n", paca[0].lppaca.shared_proc); - - return 0; -} - -/* - * Interface for changing system parameters (variable capacity weight - * and entitled capacity). Format of input is "param_name=value"; - * anything after value is ignored. Valid parameters at this time are - * "partition_entitled_capacity" and "capacity_weight". We use - * H_SET_PPP to alter parameters. - * - * This function should be invoked only on systems with - * FW_FEATURE_SPLPAR. - */ -static ssize_t lparcfg_write(struct file *file, const char __user * buf, - size_t count, loff_t * off) -{ - char *kbuf; - char *tmp; - u64 new_entitled, *new_entitled_ptr = &new_entitled; - u8 new_weight, *new_weight_ptr = &new_weight; - - unsigned long current_entitled; /* parameters for h_get_ppp */ - unsigned long dummy; - unsigned long resource; - u8 current_weight; - - ssize_t retval = -ENOMEM; - - kbuf = kmalloc(count, GFP_KERNEL); - if (!kbuf) - goto out; - - retval = -EFAULT; - if (copy_from_user(kbuf, buf, count)) - goto out; - - retval = -EINVAL; - kbuf[count - 1] = '\0'; - tmp = strchr(kbuf, '='); - if (!tmp) - goto out; - - *tmp++ = '\0'; - - if (!strcmp(kbuf, "partition_entitled_capacity")) { - char *endp; - *new_entitled_ptr = (u64) simple_strtoul(tmp, &endp, 10); - if (endp == tmp) - goto out; - new_weight_ptr = ¤t_weight; - } else if (!strcmp(kbuf, "capacity_weight")) { - char *endp; - *new_weight_ptr = (u8) simple_strtoul(tmp, &endp, 10); - if (endp == tmp) - goto out; - new_entitled_ptr = ¤t_entitled; - } else - goto out; - - /* Get our current parameters */ - retval = h_get_ppp(¤t_entitled, &dummy, &dummy, &resource); - if (retval) { - retval = -EIO; - goto out; - } - - current_weight = (resource >> 5 * 8) & 0xFF; - - pr_debug("%s: current_entitled = %lu, current_weight = %lu\n", - __FUNCTION__, current_entitled, current_weight); - - pr_debug("%s: new_entitled = %lu, new_weight = %lu\n", - __FUNCTION__, *new_entitled_ptr, *new_weight_ptr); - - retval = plpar_hcall_norets(H_SET_PPP, *new_entitled_ptr, - *new_weight_ptr); - - if (retval == H_Success || retval == H_Constrained) { - retval = count; - } else if (retval == H_Busy) { - retval = -EBUSY; - } else if (retval == H_Hardware) { - retval = -EIO; - } else if (retval == H_Parameter) { - retval = -EINVAL; - } else { - printk(KERN_WARNING "%s: received unknown hv return code %ld", - __FUNCTION__, retval); - retval = -EIO; - } - - out: - kfree(kbuf); - return retval; -} - -#endif /* CONFIG_PPC_PSERIES */ - -static int lparcfg_open(struct inode *inode, struct file *file) -{ - return single_open(file, lparcfg_data, NULL); -} - -struct file_operations lparcfg_fops = { - .owner = THIS_MODULE, - .read = seq_read, - .open = lparcfg_open, - .release = single_release, -}; - -int __init lparcfg_init(void) -{ - struct proc_dir_entry *ent; - mode_t mode = S_IRUSR | S_IRGRP | S_IROTH; - - /* Allow writing if we have FW_FEATURE_SPLPAR */ - if (firmware_has_feature(FW_FEATURE_SPLPAR)) { - lparcfg_fops.write = lparcfg_write; - mode |= S_IWUSR; - } - - ent = create_proc_entry("ppc64/lparcfg", mode, NULL); - if (ent) { - ent->proc_fops = &lparcfg_fops; - ent->data = kmalloc(LPARCFG_BUFF_SIZE, GFP_KERNEL); - if (!ent->data) { - printk(KERN_ERR - "Failed to allocate buffer for lparcfg\n"); - remove_proc_entry("lparcfg", ent->parent); - return -ENOMEM; - } - } else { - printk(KERN_ERR "Failed to create ppc64/lparcfg\n"); - return -EIO; - } - - proc_ppc64_lparcfg = ent; - return 0; -} - -void __exit lparcfg_cleanup(void) -{ - if (proc_ppc64_lparcfg) { - kfree(proc_ppc64_lparcfg->data); - remove_proc_entry("lparcfg", proc_ppc64_lparcfg->parent); - } -} - -module_init(lparcfg_init); -module_exit(lparcfg_cleanup); -MODULE_DESCRIPTION("Interface for LPAR configuration data"); -MODULE_AUTHOR("Dave Engebretsen"); -MODULE_LICENSE("GPL"); diff --git a/arch/ppc64/kernel/proc_ppc64.c b/arch/ppc64/kernel/proc_ppc64.c deleted file mode 100644 index c893a11ee198..000000000000 --- a/arch/ppc64/kernel/proc_ppc64.c +++ /dev/null @@ -1,128 +0,0 @@ -/* - * arch/ppc64/kernel/proc_ppc64.c - * - * Copyright (C) 2001 Mike Corrigan & Dave Engebretsen IBM Corporation - * - * 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; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include <linux/config.h> -#include <linux/init.h> -#include <linux/mm.h> -#include <linux/proc_fs.h> -#include <linux/slab.h> -#include <linux/kernel.h> - -#include <asm/systemcfg.h> -#include <asm/rtas.h> -#include <asm/uaccess.h> -#include <asm/prom.h> - -static loff_t page_map_seek( struct file *file, loff_t off, int whence); -static ssize_t page_map_read( struct file *file, char __user *buf, size_t nbytes, - loff_t *ppos); -static int page_map_mmap( struct file *file, struct vm_area_struct *vma ); - -static struct file_operations page_map_fops = { - .llseek = page_map_seek, - .read = page_map_read, - .mmap = page_map_mmap -}; - -/* - * Create the ppc64 and ppc64/rtas directories early. This allows us to - * assume that they have been previously created in drivers. - */ -static int __init proc_ppc64_create(void) -{ - struct proc_dir_entry *root; - - root = proc_mkdir("ppc64", NULL); - if (!root) - return 1; - - if (!(platform_is_pseries() || _machine == PLATFORM_CELL)) - return 0; - - if (!proc_mkdir("rtas", root)) - return 1; - - if (!proc_symlink("rtas", NULL, "ppc64/rtas")) - return 1; - - return 0; -} -core_initcall(proc_ppc64_create); - -static int __init proc_ppc64_init(void) -{ - struct proc_dir_entry *pde; - - pde = create_proc_entry("ppc64/systemcfg", S_IFREG|S_IRUGO, NULL); - if (!pde) - return 1; - pde->nlink = 1; - pde->data = _systemcfg; - pde->size = PAGE_SIZE; - pde->proc_fops = &page_map_fops; - - return 0; -} -__initcall(proc_ppc64_init); - -static loff_t page_map_seek( struct file *file, loff_t off, int whence) -{ - loff_t new; - struct proc_dir_entry *dp = PDE(file->f_dentry->d_inode); - - switch(whence) { - case 0: - new = off; - break; - case 1: - new = file->f_pos + off; - break; - case 2: - new = dp->size + off; - break; - default: - return -EINVAL; - } - if ( new < 0 || new > dp->size ) - return -EINVAL; - return (file->f_pos = new); -} - -static ssize_t page_map_read( struct file *file, char __user *buf, size_t nbytes, - loff_t *ppos) -{ - struct proc_dir_entry *dp = PDE(file->f_dentry->d_inode); - return simple_read_from_buffer(buf, nbytes, ppos, dp->data, dp->size); -} - -static int page_map_mmap( struct file *file, struct vm_area_struct *vma ) -{ - struct proc_dir_entry *dp = PDE(file->f_dentry->d_inode); - - vma->vm_flags |= VM_SHM | VM_LOCKED; - - if ((vma->vm_end - vma->vm_start) > dp->size) - return -EINVAL; - - remap_pfn_range(vma, vma->vm_start, __pa(dp->data) >> PAGE_SHIFT, - dp->size, vma->vm_page_prot); - return 0; -} - diff --git a/arch/ppc64/kernel/rtas_pci.c b/arch/ppc64/kernel/rtas_pci.c deleted file mode 100644 index 0e5a8e116653..000000000000 --- a/arch/ppc64/kernel/rtas_pci.c +++ /dev/null @@ -1,513 +0,0 @@ -/* - * arch/ppc64/kernel/rtas_pci.c - * - * Copyright (C) 2001 Dave Engebretsen, IBM Corporation - * Copyright (C) 2003 Anton Blanchard <anton@au.ibm.com>, IBM - * - * RTAS specific routines for PCI. - * - * Based on code from pci.c, chrp_pci.c and pSeries_pci.c - * - * 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; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include <linux/kernel.h> -#include <linux/threads.h> -#include <linux/pci.h> -#include <linux/string.h> -#include <linux/init.h> -#include <linux/bootmem.h> - -#include <asm/io.h> -#include <asm/pgtable.h> -#include <asm/irq.h> -#include <asm/prom.h> -#include <asm/machdep.h> -#include <asm/pci-bridge.h> -#include <asm/iommu.h> -#include <asm/rtas.h> -#include <asm/mpic.h> -#include <asm/ppc-pci.h> - -/* RTAS tokens */ -static int read_pci_config; -static int write_pci_config; -static int ibm_read_pci_config; -static int ibm_write_pci_config; - -static inline int config_access_valid(struct pci_dn *dn, int where) -{ - if (where < 256) - return 1; - if (where < 4096 && dn->pci_ext_config_space) - return 1; - - return 0; -} - -static int of_device_available(struct device_node * dn) -{ - char * status; - - status = get_property(dn, "status", NULL); - - if (!status) - return 1; - - if (!strcmp(status, "okay")) - return 1; - - return 0; -} - -static int rtas_read_config(struct pci_dn *pdn, int where, int size, u32 *val) -{ - int returnval = -1; - unsigned long buid, addr; - int ret; - - if (!pdn) - return PCIBIOS_DEVICE_NOT_FOUND; - if (!config_access_valid(pdn, where)) - return PCIBIOS_BAD_REGISTER_NUMBER; - - addr = ((where & 0xf00) << 20) | (pdn->busno << 16) | - (pdn->devfn << 8) | (where & 0xff); - buid = pdn->phb->buid; - if (buid) { - ret = rtas_call(ibm_read_pci_config, 4, 2, &returnval, - addr, BUID_HI(buid), BUID_LO(buid), size); - } else { - ret = rtas_call(read_pci_config, 2, 2, &returnval, addr, size); - } - *val = returnval; - - if (ret) - return PCIBIOS_DEVICE_NOT_FOUND; - - if (returnval == EEH_IO_ERROR_VALUE(size) && - eeh_dn_check_failure (pdn->node, NULL)) - return PCIBIOS_DEVICE_NOT_FOUND; - - return PCIBIOS_SUCCESSFUL; -} - -static int rtas_pci_read_config(struct pci_bus *bus, - unsigned int devfn, - int where, int size, u32 *val) -{ - struct device_node *busdn, *dn; - - if (bus->self) - busdn = pci_device_to_OF_node(bus->self); - else - busdn = bus->sysdata; /* must be a phb */ - - /* Search only direct children of the bus */ - for (dn = busdn->child; dn; dn = dn->sibling) { - struct pci_dn *pdn = PCI_DN(dn); - if (pdn && pdn->devfn == devfn - && of_device_available(dn)) - return rtas_read_config(pdn, where, size, val); - } - - return PCIBIOS_DEVICE_NOT_FOUND; -} - -int rtas_write_config(struct pci_dn *pdn, int where, int size, u32 val) -{ - unsigned long buid, addr; - int ret; - - if (!pdn) - return PCIBIOS_DEVICE_NOT_FOUND; - if (!config_access_valid(pdn, where)) - return PCIBIOS_BAD_REGISTER_NUMBER; - - addr = ((where & 0xf00) << 20) | (pdn->busno << 16) | - (pdn->devfn << 8) | (where & 0xff); - buid = pdn->phb->buid; - if (buid) { - ret = rtas_call(ibm_write_pci_config, 5, 1, NULL, addr, - BUID_HI(buid), BUID_LO(buid), size, (ulong) val); - } else { - ret = rtas_call(write_pci_config, 3, 1, NULL, addr, size, (ulong)val); - } - - if (ret) - return PCIBIOS_DEVICE_NOT_FOUND; - - return PCIBIOS_SUCCESSFUL; -} - -static int rtas_pci_write_config(struct pci_bus *bus, - unsigned int devfn, - int where, int size, u32 val) -{ - struct device_node *busdn, *dn; - - if (bus->self) - busdn = pci_device_to_OF_node(bus->self); - else - busdn = bus->sysdata; /* must be a phb */ - - /* Search only direct children of the bus */ - for (dn = busdn->child; dn; dn = dn->sibling) { - struct pci_dn *pdn = PCI_DN(dn); - if (pdn && pdn->devfn == devfn - && of_device_available(dn)) - return rtas_write_config(pdn, where, size, val); - } - return PCIBIOS_DEVICE_NOT_FOUND; -} - -struct pci_ops rtas_pci_ops = { - rtas_pci_read_config, - rtas_pci_write_config -}; - -int is_python(struct device_node *dev) -{ - char *model = (char *)get_property(dev, "model", NULL); - - if (model && strstr(model, "Python")) - return 1; - - return 0; -} - -static int get_phb_reg_prop(struct device_node *dev, - unsigned int addr_size_words, - struct reg_property64 *reg) -{ - unsigned int *ui_ptr = NULL, len; - - /* Found a PHB, now figure out where his registers are mapped. */ - ui_ptr = (unsigned int *)get_property(dev, "reg", &len); - if (ui_ptr == NULL) - return 1; - - if (addr_size_words == 1) { - reg->address = ((struct reg_property32 *)ui_ptr)->address; - reg->size = ((struct reg_property32 *)ui_ptr)->size; - } else { - *reg = *((struct reg_property64 *)ui_ptr); - } - - return 0; -} - -static void python_countermeasures(struct device_node *dev, - unsigned int addr_size_words) -{ - struct reg_property64 reg_struct; - void __iomem *chip_regs; - volatile u32 val; - - if (get_phb_reg_prop(dev, addr_size_words, ®_struct)) - return; - - /* Python's register file is 1 MB in size. */ - chip_regs = ioremap(reg_struct.address & ~(0xfffffUL), 0x100000); - - /* - * Firmware doesn't always clear this bit which is critical - * for good performance - Anton - */ - -#define PRG_CL_RESET_VALID 0x00010000 - - val = in_be32(chip_regs + 0xf6030); - if (val & PRG_CL_RESET_VALID) { - printk(KERN_INFO "Python workaround: "); - val &= ~PRG_CL_RESET_VALID; - out_be32(chip_regs + 0xf6030, val); - /* - * We must read it back for changes to - * take effect - */ - val = in_be32(chip_regs + 0xf6030); - printk("reg0: %x\n", val); - } - - iounmap(chip_regs); -} - -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"); -} - -unsigned long __devinit get_phb_buid (struct device_node *phb) -{ - int addr_cells; - unsigned int *buid_vals; - unsigned int len; - unsigned long buid; - - if (ibm_read_pci_config == -1) return 0; - - /* PHB's will always be children of the root node, - * or so it is promised by the current firmware. */ - if (phb->parent == NULL) - return 0; - if (phb->parent->parent) - return 0; - - buid_vals = (unsigned int *) get_property(phb, "reg", &len); - if (buid_vals == NULL) - return 0; - - addr_cells = prom_n_addr_cells(phb); - if (addr_cells == 1) { - buid = (unsigned long) buid_vals[0]; - } else { - buid = (((unsigned long)buid_vals[0]) << 32UL) | - (((unsigned long)buid_vals[1]) & 0xffffffff); - } - return buid; -} - -static int phb_set_bus_ranges(struct device_node *dev, - struct pci_controller *phb) -{ - int *bus_range; - unsigned int len; - - bus_range = (int *) get_property(dev, "bus-range", &len); - if (bus_range == NULL || len < 2 * sizeof(int)) { - return 1; - } - - phb->first_busno = bus_range[0]; - phb->last_busno = bus_range[1]; - - return 0; -} - -static int __devinit setup_phb(struct device_node *dev, - struct pci_controller *phb, - unsigned int addr_size_words) -{ - pci_setup_pci_controller(phb); - - if (is_python(dev)) - python_countermeasures(dev, addr_size_words); - - if (phb_set_bus_ranges(dev, phb)) - return 1; - - phb->arch_data = dev; - phb->ops = &rtas_pci_ops; - phb->buid = get_phb_buid(dev); - - return 0; -} - -static void __devinit add_linux_pci_domain(struct device_node *dev, - struct pci_controller *phb, - struct property *of_prop) -{ - memset(of_prop, 0, sizeof(struct property)); - of_prop->name = "linux,pci-domain"; - of_prop->length = sizeof(phb->global_number); - of_prop->value = (unsigned char *)&of_prop[1]; - memcpy(of_prop->value, &phb->global_number, sizeof(phb->global_number)); - prom_add_property(dev, of_prop); -} - -static struct pci_controller * __init alloc_phb(struct device_node *dev, - unsigned int addr_size_words) -{ - struct pci_controller *phb; - struct property *of_prop; - - phb = alloc_bootmem(sizeof(struct pci_controller)); - if (phb == NULL) - return NULL; - - of_prop = alloc_bootmem(sizeof(struct property) + - sizeof(phb->global_number)); - if (!of_prop) - return NULL; - - if (setup_phb(dev, phb, addr_size_words)) - return NULL; - - add_linux_pci_domain(dev, phb, of_prop); - - return phb; -} - -static struct pci_controller * __devinit alloc_phb_dynamic(struct device_node *dev, unsigned int addr_size_words) -{ - struct pci_controller *phb; - - phb = (struct pci_controller *)kmalloc(sizeof(struct pci_controller), - GFP_KERNEL); - if (phb == NULL) - return NULL; - - if (setup_phb(dev, phb, addr_size_words)) - return NULL; - - phb->is_dynamic = 1; - - /* TODO: linux,pci-domain? */ - - return phb; -} - -unsigned long __init find_and_init_phbs(void) -{ - struct device_node *node; - struct pci_controller *phb; - unsigned int root_size_cells = 0; - unsigned int index; - unsigned int *opprop = NULL; - struct device_node *root = of_find_node_by_path("/"); - - if (ppc64_interrupt_controller == IC_OPEN_PIC) { - opprop = (unsigned int *)get_property(root, - "platform-open-pic", NULL); - } - - root_size_cells = prom_n_size_cells(root); - - index = 0; - - for (node = of_get_next_child(root, NULL); - node != NULL; - node = of_get_next_child(root, node)) { - if (node->type == NULL || strcmp(node->type, "pci") != 0) - continue; - - phb = alloc_phb(node, root_size_cells); - if (!phb) - continue; - - pci_process_bridge_OF_ranges(phb, node, 0); - pci_setup_phb_io(phb, index == 0); -#ifdef CONFIG_PPC_PSERIES - if (ppc64_interrupt_controller == IC_OPEN_PIC && pSeries_mpic) { - int addr = root_size_cells * (index + 2) - 1; - mpic_assign_isu(pSeries_mpic, index, opprop[addr]); - } -#endif - index++; - } - - of_node_put(root); - pci_devs_phb_init(); - - /* - * pci_probe_only and pci_assign_all_buses can be set via properties - * in chosen. - */ - if (of_chosen) { - int *prop; - - prop = (int *)get_property(of_chosen, "linux,pci-probe-only", - NULL); - if (prop) - pci_probe_only = *prop; - - prop = (int *)get_property(of_chosen, - "linux,pci-assign-all-buses", NULL); - if (prop) - pci_assign_all_buses = *prop; - } - - return 0; -} - -struct pci_controller * __devinit init_phb_dynamic(struct device_node *dn) -{ - struct device_node *root = of_find_node_by_path("/"); - unsigned int root_size_cells = 0; - struct pci_controller *phb; - int primary; - - root_size_cells = prom_n_size_cells(root); - - primary = list_empty(&hose_list); - phb = alloc_phb_dynamic(dn, root_size_cells); - if (!phb) - return NULL; - - pci_process_bridge_OF_ranges(phb, dn, primary); - - pci_setup_phb_io_dynamic(phb, primary); - of_node_put(root); - - pci_devs_phb_init_dynamic(phb); - scan_phb(phb); - - return phb; -} -EXPORT_SYMBOL(init_phb_dynamic); - -/* RPA-specific bits for removing PHBs */ -int pcibios_remove_root_bus(struct pci_controller *phb) -{ - struct pci_bus *b = phb->bus; - struct resource *res; - int rc, i; - - res = b->resource[0]; - if (!res->flags) { - printk(KERN_ERR "%s: no IO resource for PHB %s\n", __FUNCTION__, - b->name); - return 1; - } - - rc = unmap_bus_range(b); - if (rc) { - printk(KERN_ERR "%s: failed to unmap IO on bus %s\n", - __FUNCTION__, b->name); - return 1; - } - - if (release_resource(res)) { - printk(KERN_ERR "%s: failed to release IO on bus %s\n", - __FUNCTION__, b->name); - return 1; - } - - for (i = 1; i < 3; ++i) { - res = b->resource[i]; - if (!res->flags && i == 0) { - printk(KERN_ERR "%s: no MEM resource for PHB %s\n", - __FUNCTION__, b->name); - return 1; - } - if (res->flags && release_resource(res)) { - printk(KERN_ERR - "%s: failed to release IO %d on bus %s\n", - __FUNCTION__, i, b->name); - return 1; - } - } - - list_del(&phb->list_node); - if (phb->is_dynamic) - kfree(phb); - - return 0; -} -EXPORT_SYMBOL(pcibios_remove_root_bus); diff --git a/arch/ppc64/kernel/sysfs.c b/arch/ppc64/kernel/sysfs.c deleted file mode 100644 index e99ec62c2c52..000000000000 --- a/arch/ppc64/kernel/sysfs.c +++ /dev/null @@ -1,384 +0,0 @@ -#include <linux/config.h> -#include <linux/sysdev.h> -#include <linux/cpu.h> -#include <linux/smp.h> -#include <linux/percpu.h> -#include <linux/init.h> -#include <linux/sched.h> -#include <linux/module.h> -#include <linux/nodemask.h> -#include <linux/cpumask.h> -#include <linux/notifier.h> - -#include <asm/current.h> -#include <asm/processor.h> -#include <asm/cputable.h> -#include <asm/firmware.h> -#include <asm/hvcall.h> -#include <asm/prom.h> -#include <asm/systemcfg.h> -#include <asm/paca.h> -#include <asm/lppaca.h> -#include <asm/machdep.h> -#include <asm/smp.h> - -static DEFINE_PER_CPU(struct cpu, cpu_devices); - -/* SMT stuff */ - -#ifdef CONFIG_PPC_MULTIPLATFORM -/* default to snooze disabled */ -DEFINE_PER_CPU(unsigned long, smt_snooze_delay); - -static ssize_t store_smt_snooze_delay(struct sys_device *dev, const char *buf, - size_t count) -{ - struct cpu *cpu = container_of(dev, struct cpu, sysdev); - ssize_t ret; - unsigned long snooze; - - ret = sscanf(buf, "%lu", &snooze); - if (ret != 1) - return -EINVAL; - - per_cpu(smt_snooze_delay, cpu->sysdev.id) = snooze; - - return count; -} - -static ssize_t show_smt_snooze_delay(struct sys_device *dev, char *buf) -{ - struct cpu *cpu = container_of(dev, struct cpu, sysdev); - - return sprintf(buf, "%lu\n", per_cpu(smt_snooze_delay, cpu->sysdev.id)); -} - -static SYSDEV_ATTR(smt_snooze_delay, 0644, show_smt_snooze_delay, - store_smt_snooze_delay); - -/* Only parse OF options if the matching cmdline option was not specified */ -static int smt_snooze_cmdline; - -static int __init smt_setup(void) -{ - struct device_node *options; - unsigned int *val; - unsigned int cpu; - - if (!cpu_has_feature(CPU_FTR_SMT)) - return 1; - - options = find_path_device("/options"); - if (!options) - return 1; - - val = (unsigned int *)get_property(options, "ibm,smt-snooze-delay", - NULL); - if (!smt_snooze_cmdline && val) { - for_each_cpu(cpu) - per_cpu(smt_snooze_delay, cpu) = *val; - } - - return 1; -} -__initcall(smt_setup); - -static int __init setup_smt_snooze_delay(char *str) -{ - unsigned int cpu; - int snooze; - - if (!cpu_has_feature(CPU_FTR_SMT)) - return 1; - - smt_snooze_cmdline = 1; - - if (get_option(&str, &snooze)) { - for_each_cpu(cpu) - per_cpu(smt_snooze_delay, cpu) = snooze; - } - - return 1; -} -__setup("smt-snooze-delay=", setup_smt_snooze_delay); - -#endif /* CONFIG_PPC_MULTIPLATFORM */ - -/* - * Enabling PMCs will slow partition context switch times so we only do - * it the first time we write to the PMCs. - */ - -static DEFINE_PER_CPU(char, pmcs_enabled); - -void ppc64_enable_pmcs(void) -{ - /* Only need to enable them once */ - if (__get_cpu_var(pmcs_enabled)) - return; - - __get_cpu_var(pmcs_enabled) = 1; - - if (ppc_md.enable_pmcs) - ppc_md.enable_pmcs(); -} -EXPORT_SYMBOL(ppc64_enable_pmcs); - -/* XXX convert to rusty's on_one_cpu */ -static unsigned long run_on_cpu(unsigned long cpu, - unsigned long (*func)(unsigned long), - unsigned long arg) -{ - cpumask_t old_affinity = current->cpus_allowed; - unsigned long ret; - - /* should return -EINVAL to userspace */ - if (set_cpus_allowed(current, cpumask_of_cpu(cpu))) - return 0; - - ret = func(arg); - - set_cpus_allowed(current, old_affinity); - - return ret; -} - -#define SYSFS_PMCSETUP(NAME, ADDRESS) \ -static unsigned long read_##NAME(unsigned long junk) \ -{ \ - return mfspr(ADDRESS); \ -} \ -static unsigned long write_##NAME(unsigned long val) \ -{ \ - ppc64_enable_pmcs(); \ - mtspr(ADDRESS, val); \ - return 0; \ -} \ -static ssize_t show_##NAME(struct sys_device *dev, char *buf) \ -{ \ - struct cpu *cpu = container_of(dev, struct cpu, sysdev); \ - unsigned long val = run_on_cpu(cpu->sysdev.id, read_##NAME, 0); \ - return sprintf(buf, "%lx\n", val); \ -} \ -static ssize_t __attribute_used__ \ - store_##NAME(struct sys_device *dev, const char *buf, size_t count) \ -{ \ - struct cpu *cpu = container_of(dev, struct cpu, sysdev); \ - unsigned long val; \ - int ret = sscanf(buf, "%lx", &val); \ - if (ret != 1) \ - return -EINVAL; \ - run_on_cpu(cpu->sysdev.id, write_##NAME, val); \ - return count; \ -} - -SYSFS_PMCSETUP(mmcr0, SPRN_MMCR0); -SYSFS_PMCSETUP(mmcr1, SPRN_MMCR1); -SYSFS_PMCSETUP(mmcra, SPRN_MMCRA); -SYSFS_PMCSETUP(pmc1, SPRN_PMC1); -SYSFS_PMCSETUP(pmc2, SPRN_PMC2); -SYSFS_PMCSETUP(pmc3, SPRN_PMC3); -SYSFS_PMCSETUP(pmc4, SPRN_PMC4); -SYSFS_PMCSETUP(pmc5, SPRN_PMC5); -SYSFS_PMCSETUP(pmc6, SPRN_PMC6); -SYSFS_PMCSETUP(pmc7, SPRN_PMC7); -SYSFS_PMCSETUP(pmc8, SPRN_PMC8); -SYSFS_PMCSETUP(purr, SPRN_PURR); - -static SYSDEV_ATTR(mmcr0, 0600, show_mmcr0, store_mmcr0); -static SYSDEV_ATTR(mmcr1, 0600, show_mmcr1, store_mmcr1); -static SYSDEV_ATTR(mmcra, 0600, show_mmcra, store_mmcra); -static SYSDEV_ATTR(pmc1, 0600, show_pmc1, store_pmc1); -static SYSDEV_ATTR(pmc2, 0600, show_pmc2, store_pmc2); -static SYSDEV_ATTR(pmc3, 0600, show_pmc3, store_pmc3); -static SYSDEV_ATTR(pmc4, 0600, show_pmc4, store_pmc4); -static SYSDEV_ATTR(pmc5, 0600, show_pmc5, store_pmc5); -static SYSDEV_ATTR(pmc6, 0600, show_pmc6, store_pmc6); -static SYSDEV_ATTR(pmc7, 0600, show_pmc7, store_pmc7); -static SYSDEV_ATTR(pmc8, 0600, show_pmc8, store_pmc8); -static SYSDEV_ATTR(purr, 0600, show_purr, NULL); - -static void register_cpu_online(unsigned int cpu) -{ - struct cpu *c = &per_cpu(cpu_devices, cpu); - struct sys_device *s = &c->sysdev; - -#ifndef CONFIG_PPC_ISERIES - if (cpu_has_feature(CPU_FTR_SMT)) - sysdev_create_file(s, &attr_smt_snooze_delay); -#endif - - /* PMC stuff */ - - sysdev_create_file(s, &attr_mmcr0); - sysdev_create_file(s, &attr_mmcr1); - - if (cpu_has_feature(CPU_FTR_MMCRA)) - sysdev_create_file(s, &attr_mmcra); - - if (cur_cpu_spec->num_pmcs >= 1) - sysdev_create_file(s, &attr_pmc1); - if (cur_cpu_spec->num_pmcs >= 2) - sysdev_create_file(s, &attr_pmc2); - if (cur_cpu_spec->num_pmcs >= 3) - sysdev_create_file(s, &attr_pmc3); - if (cur_cpu_spec->num_pmcs >= 4) - sysdev_create_file(s, &attr_pmc4); - if (cur_cpu_spec->num_pmcs >= 5) - sysdev_create_file(s, &attr_pmc5); - if (cur_cpu_spec->num_pmcs >= 6) - sysdev_create_file(s, &attr_pmc6); - if (cur_cpu_spec->num_pmcs >= 7) - sysdev_create_file(s, &attr_pmc7); - if (cur_cpu_spec->num_pmcs >= 8) - sysdev_create_file(s, &attr_pmc8); - - if (cpu_has_feature(CPU_FTR_SMT)) - sysdev_create_file(s, &attr_purr); -} - -#ifdef CONFIG_HOTPLUG_CPU -static void unregister_cpu_online(unsigned int cpu) -{ - struct cpu *c = &per_cpu(cpu_devices, cpu); - struct sys_device *s = &c->sysdev; - - BUG_ON(c->no_control); - -#ifndef CONFIG_PPC_ISERIES - if (cpu_has_feature(CPU_FTR_SMT)) - sysdev_remove_file(s, &attr_smt_snooze_delay); -#endif - - /* PMC stuff */ - - sysdev_remove_file(s, &attr_mmcr0); - sysdev_remove_file(s, &attr_mmcr1); - - if (cpu_has_feature(CPU_FTR_MMCRA)) - sysdev_remove_file(s, &attr_mmcra); - - if (cur_cpu_spec->num_pmcs >= 1) - sysdev_remove_file(s, &attr_pmc1); - if (cur_cpu_spec->num_pmcs >= 2) - sysdev_remove_file(s, &attr_pmc2); - if (cur_cpu_spec->num_pmcs >= 3) - sysdev_remove_file(s, &attr_pmc3); - if (cur_cpu_spec->num_pmcs >= 4) - sysdev_remove_file(s, &attr_pmc4); - if (cur_cpu_spec->num_pmcs >= 5) - sysdev_remove_file(s, &attr_pmc5); - if (cur_cpu_spec->num_pmcs >= 6) - sysdev_remove_file(s, &attr_pmc6); - if (cur_cpu_spec->num_pmcs >= 7) - sysdev_remove_file(s, &attr_pmc7); - if (cur_cpu_spec->num_pmcs >= 8) - sysdev_remove_file(s, &attr_pmc8); - - if (cpu_has_feature(CPU_FTR_SMT)) - sysdev_remove_file(s, &attr_purr); -} -#endif /* CONFIG_HOTPLUG_CPU */ - -static int __devinit sysfs_cpu_notify(struct notifier_block *self, - unsigned long action, void *hcpu) -{ - unsigned int cpu = (unsigned int)(long)hcpu; - - switch (action) { - case CPU_ONLINE: - register_cpu_online(cpu); - break; -#ifdef CONFIG_HOTPLUG_CPU - case CPU_DEAD: - unregister_cpu_online(cpu); - break; -#endif - } - return NOTIFY_OK; -} - -static struct notifier_block __devinitdata sysfs_cpu_nb = { - .notifier_call = sysfs_cpu_notify, -}; - -/* NUMA stuff */ - -#ifdef CONFIG_NUMA -static struct node node_devices[MAX_NUMNODES]; - -static void register_nodes(void) -{ - int i; - - for (i = 0; i < MAX_NUMNODES; i++) { - if (node_online(i)) { - int p_node = parent_node(i); - struct node *parent = NULL; - - if (p_node != i) - parent = &node_devices[p_node]; - - register_node(&node_devices[i], i, parent); - } - } -} -#else -static void register_nodes(void) -{ - return; -} -#endif - -/* Only valid if CPU is present. */ -static ssize_t show_physical_id(struct sys_device *dev, char *buf) -{ - struct cpu *cpu = container_of(dev, struct cpu, sysdev); - - return sprintf(buf, "%d\n", get_hard_smp_processor_id(cpu->sysdev.id)); -} -static SYSDEV_ATTR(physical_id, 0444, show_physical_id, NULL); - -static int __init topology_init(void) -{ - int cpu; - struct node *parent = NULL; - - register_nodes(); - - register_cpu_notifier(&sysfs_cpu_nb); - - for_each_cpu(cpu) { - struct cpu *c = &per_cpu(cpu_devices, cpu); - -#ifdef CONFIG_NUMA - /* The node to which a cpu belongs can't be known - * until the cpu is made present. - */ - parent = NULL; - if (cpu_present(cpu)) - parent = &node_devices[cpu_to_node(cpu)]; -#endif - /* - * For now, we just see if the system supports making - * the RTAS calls for CPU hotplug. But, there may be a - * more comprehensive way to do this for an individual - * CPU. For instance, the boot cpu might never be valid - * for hotplugging. - */ - if (!ppc_md.cpu_die) - c->no_control = 1; - - if (cpu_online(cpu) || (c->no_control == 0)) { - register_cpu(c, cpu, parent); - - sysdev_create_file(&c->sysdev, &attr_physical_id); - } - - if (cpu_online(cpu)) - register_cpu_online(cpu); - } - - return 0; -} -__initcall(topology_init); |