From 188917e183cf9ad0374b571006d0fc6d48a7f447 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Thu, 24 Sep 2009 19:29:13 +0000 Subject: [PATCH] powerpc: Move /proc/ppc64 to /proc/powerpc and add symlink Some of the stuff in /proc/ppc64 such as the RTAS bits are actually useful to some 32-bit platforms. Rename the file, and create a symlink on 64-bit for backward compatibility Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kernel/Makefile | 2 +- arch/powerpc/kernel/lparcfg.c | 4 +- .../kernel/{proc_ppc64.c => proc_powerpc.c} | 102 +++++++++--------- arch/powerpc/kernel/rtas_flash.c | 10 +- arch/powerpc/platforms/pseries/reconfig.c | 6 +- arch/powerpc/platforms/pseries/scanlog.c | 4 +- 6 files changed, 66 insertions(+), 62 deletions(-) rename arch/powerpc/kernel/{proc_ppc64.c => proc_powerpc.c} (87%) diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile index b23664a0b86c..3faa39114219 100644 --- a/arch/powerpc/kernel/Makefile +++ b/arch/powerpc/kernel/Makefile @@ -42,7 +42,7 @@ obj-$(CONFIG_ALTIVEC) += vecemu.o obj-$(CONFIG_PPC_970_NAP) += idle_power4.o obj-$(CONFIG_PPC_OF) += of_device.o of_platform.o prom_parse.o obj-$(CONFIG_PPC_CLOCK) += clock.o -procfs-$(CONFIG_PPC64) := proc_ppc64.o +procfs-y := proc_powerpc.o obj-$(CONFIG_PROC_FS) += $(procfs-y) rtaspci-$(CONFIG_PPC64)-$(CONFIG_PCI) := rtas_pci.o obj-$(CONFIG_PPC_RTAS) += rtas.o rtas-rtc.o $(rtaspci-y-y) diff --git a/arch/powerpc/kernel/lparcfg.c b/arch/powerpc/kernel/lparcfg.c index ed0ac4e4b8d8..79a00bb9c64c 100644 --- a/arch/powerpc/kernel/lparcfg.c +++ b/arch/powerpc/kernel/lparcfg.c @@ -781,9 +781,9 @@ static int __init lparcfg_init(void) !firmware_has_feature(FW_FEATURE_ISERIES)) mode |= S_IWUSR; - ent = proc_create("ppc64/lparcfg", mode, NULL, &lparcfg_fops); + ent = proc_create("powerpc/lparcfg", mode, NULL, &lparcfg_fops); if (!ent) { - printk(KERN_ERR "Failed to create ppc64/lparcfg\n"); + printk(KERN_ERR "Failed to create powerpc/lparcfg\n"); return -EIO; } diff --git a/arch/powerpc/kernel/proc_ppc64.c b/arch/powerpc/kernel/proc_powerpc.c similarity index 87% rename from arch/powerpc/kernel/proc_ppc64.c rename to arch/powerpc/kernel/proc_powerpc.c index c647ddef40dc..1ed3b8d7981e 100644 --- a/arch/powerpc/kernel/proc_ppc64.c +++ b/arch/powerpc/kernel/proc_powerpc.c @@ -28,55 +28,7 @@ #include #include -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 const 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 (!of_find_node_by_path("/rtas")) - 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 = proc_create_data("ppc64/systemcfg", S_IFREG|S_IRUGO, NULL, - &page_map_fops, vdso_data); - if (!pde) - return 1; - pde->size = PAGE_SIZE; - - return 0; -} -__initcall(proc_ppc64_init); +#ifdef CONFIG_PPC64 static loff_t page_map_seek( struct file *file, loff_t off, int whence) { @@ -120,3 +72,55 @@ static int page_map_mmap( struct file *file, struct vm_area_struct *vma ) return 0; } +static const struct file_operations page_map_fops = { + .llseek = page_map_seek, + .read = page_map_read, + .mmap = page_map_mmap +}; + + +static int __init proc_ppc64_init(void) +{ + struct proc_dir_entry *pde; + + pde = proc_create_data("powerpc/systemcfg", S_IFREG|S_IRUGO, NULL, + &page_map_fops, vdso_data); + if (!pde) + return 1; + pde->size = PAGE_SIZE; + + return 0; +} +__initcall(proc_ppc64_init); + +#endif /* CONFIG_PPC64 */ + +/* + * 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("powerpc", NULL); + if (!root) + return 1; + +#ifdef CONFIG_PPC64 + if (!proc_symlink("ppc64", NULL, "powerpc")) + pr_err("Failed to create link /proc/ppc64 -> /proc/powerpc\n"); +#endif + + if (!of_find_node_by_path("/rtas")) + return 0; + + if (!proc_mkdir("rtas", root)) + return 1; + + if (!proc_symlink("rtas", NULL, "powerpc/rtas")) + return 1; + + return 0; +} +core_initcall(proc_ppc64_create); diff --git a/arch/powerpc/kernel/rtas_flash.c b/arch/powerpc/kernel/rtas_flash.c index 13011a96a977..a85117d5c9a4 100644 --- a/arch/powerpc/kernel/rtas_flash.c +++ b/arch/powerpc/kernel/rtas_flash.c @@ -6,7 +6,7 @@ * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. * - * /proc/ppc64/rtas/firmware_flash interface + * /proc/powerpc/rtas/firmware_flash interface * * This file implements a firmware_flash interface to pump a firmware * image into the kernel. At reboot time rtas_restart() will see the @@ -740,7 +740,7 @@ static int __init rtas_flash_init(void) return 1; } - firmware_flash_pde = create_flash_pde("ppc64/rtas/" + firmware_flash_pde = create_flash_pde("powerpc/rtas/" FIRMWARE_FLASH_NAME, &rtas_flash_operations); if (firmware_flash_pde == NULL) { @@ -754,7 +754,7 @@ static int __init rtas_flash_init(void) if (rc != 0) goto cleanup; - firmware_update_pde = create_flash_pde("ppc64/rtas/" + firmware_update_pde = create_flash_pde("powerpc/rtas/" FIRMWARE_UPDATE_NAME, &rtas_flash_operations); if (firmware_update_pde == NULL) { @@ -768,7 +768,7 @@ static int __init rtas_flash_init(void) if (rc != 0) goto cleanup; - validate_pde = create_flash_pde("ppc64/rtas/" VALIDATE_FLASH_NAME, + validate_pde = create_flash_pde("powerpc/rtas/" VALIDATE_FLASH_NAME, &validate_flash_operations); if (validate_pde == NULL) { rc = -ENOMEM; @@ -781,7 +781,7 @@ static int __init rtas_flash_init(void) if (rc != 0) goto cleanup; - manage_pde = create_flash_pde("ppc64/rtas/" MANAGE_FLASH_NAME, + manage_pde = create_flash_pde("powerpc/rtas/" MANAGE_FLASH_NAME, &manage_flash_operations); if (manage_pde == NULL) { rc = -ENOMEM; diff --git a/arch/powerpc/platforms/pseries/reconfig.c b/arch/powerpc/platforms/pseries/reconfig.c index 2e2bbe120b90..5182d2b992c6 100644 --- a/arch/powerpc/platforms/pseries/reconfig.c +++ b/arch/powerpc/platforms/pseries/reconfig.c @@ -184,7 +184,7 @@ static int pSeries_reconfig_remove_node(struct device_node *np) } /* - * /proc/ppc64/ofdt - yucky binary interface for adding and removing + * /proc/powerpc/ofdt - yucky binary interface for adding and removing * OF device nodes. Should be deprecated as soon as we get an * in-kernel wrapper for the RTAS ibm,configure-connector call. */ @@ -543,7 +543,7 @@ static const struct file_operations ofdt_fops = { .write = ofdt_write }; -/* create /proc/ppc64/ofdt write-only by root */ +/* create /proc/powerpc/ofdt write-only by root */ static int proc_ppc64_create_ofdt(void) { struct proc_dir_entry *ent; @@ -551,7 +551,7 @@ static int proc_ppc64_create_ofdt(void) if (!machine_is(pseries)) return 0; - ent = proc_create("ppc64/ofdt", S_IWUSR, NULL, &ofdt_fops); + ent = proc_create("powerpc/ofdt", S_IWUSR, NULL, &ofdt_fops); if (ent) ent->size = 0; diff --git a/arch/powerpc/platforms/pseries/scanlog.c b/arch/powerpc/platforms/pseries/scanlog.c index 417eca79df69..1b45c458f952 100644 --- a/arch/powerpc/platforms/pseries/scanlog.c +++ b/arch/powerpc/platforms/pseries/scanlog.c @@ -13,7 +13,7 @@ * of this data using this driver. A dump exists if the device-tree * /chosen/ibm,scan-log-data property exists. * - * This driver exports /proc/ppc64/scan-log-dump which can be read. + * This driver exports /proc/powerpc/scan-log-dump which can be read. * The driver supports only sequential reads. * * The driver looks at a write to the driver for the single word "reset". @@ -186,7 +186,7 @@ static int __init scanlog_init(void) if (!data) goto err; - ent = proc_create_data("ppc64/rtas/scan-log-dump", S_IRUSR, NULL, + ent = proc_create_data("powerpc/rtas/scan-log-dump", S_IRUSR, NULL, &scanlog_fops, data); if (!ent) goto err; -- 2.20.1