From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/drivers/pnp/pnpbios/proc.c | 350 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 350 insertions(+) create mode 100644 kernel/drivers/pnp/pnpbios/proc.c (limited to 'kernel/drivers/pnp/pnpbios/proc.c') diff --git a/kernel/drivers/pnp/pnpbios/proc.c b/kernel/drivers/pnp/pnpbios/proc.c new file mode 100644 index 000000000..c212db0fc --- /dev/null +++ b/kernel/drivers/pnp/pnpbios/proc.c @@ -0,0 +1,350 @@ +/* + * /proc/bus/pnp interface for Plug and Play devices + * + * Written by David Hinds, dahinds@users.sourceforge.net + * Modified by Thomas Hood + * + * The .../devices and .../ and .../boot/ files are + * utilized by the lspnp and setpnp utilities, supplied with the + * pcmcia-cs package. + * http://pcmcia-cs.sourceforge.net + * + * The .../escd file is utilized by the lsescd utility written by + * Gunther Mayer. + * + * The .../legacy_device_resources file is not used yet. + * + * The other files are human-readable. + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include "pnpbios.h" + +static struct proc_dir_entry *proc_pnp = NULL; +static struct proc_dir_entry *proc_pnp_boot = NULL; + +static int pnpconfig_proc_show(struct seq_file *m, void *v) +{ + struct pnp_isa_config_struc pnps; + + if (pnp_bios_isapnp_config(&pnps)) + return -EIO; + seq_printf(m, "structure_revision %d\n" + "number_of_CSNs %d\n" + "ISA_read_data_port 0x%x\n", + pnps.revision, pnps.no_csns, pnps.isa_rd_data_port); + return 0; +} + +static int pnpconfig_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, pnpconfig_proc_show, NULL); +} + +static const struct file_operations pnpconfig_proc_fops = { + .owner = THIS_MODULE, + .open = pnpconfig_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int escd_info_proc_show(struct seq_file *m, void *v) +{ + struct escd_info_struc escd; + + if (pnp_bios_escd_info(&escd)) + return -EIO; + seq_printf(m, "min_ESCD_write_size %d\n" + "ESCD_size %d\n" + "NVRAM_base 0x%x\n", + escd.min_escd_write_size, + escd.escd_size, escd.nv_storage_base); + return 0; +} + +static int escd_info_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, escd_info_proc_show, NULL); +} + +static const struct file_operations escd_info_proc_fops = { + .owner = THIS_MODULE, + .open = escd_info_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +#define MAX_SANE_ESCD_SIZE (32*1024) +static int escd_proc_show(struct seq_file *m, void *v) +{ + struct escd_info_struc escd; + char *tmpbuf; + int escd_size; + + if (pnp_bios_escd_info(&escd)) + return -EIO; + + /* sanity check */ + if (escd.escd_size > MAX_SANE_ESCD_SIZE) { + printk(KERN_ERR + "PnPBIOS: %s: ESCD size reported by BIOS escd_info call is too great\n", __func__); + return -EFBIG; + } + + tmpbuf = kzalloc(escd.escd_size, GFP_KERNEL); + if (!tmpbuf) + return -ENOMEM; + + if (pnp_bios_read_escd(tmpbuf, escd.nv_storage_base)) { + kfree(tmpbuf); + return -EIO; + } + + escd_size = + (unsigned char)(tmpbuf[0]) + (unsigned char)(tmpbuf[1]) * 256; + + /* sanity check */ + if (escd_size > MAX_SANE_ESCD_SIZE) { + printk(KERN_ERR "PnPBIOS: %s: ESCD size reported by" + " BIOS read_escd call is too great\n", __func__); + kfree(tmpbuf); + return -EFBIG; + } + + seq_write(m, tmpbuf, escd_size); + kfree(tmpbuf); + return 0; +} + +static int escd_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, escd_proc_show, NULL); +} + +static const struct file_operations escd_proc_fops = { + .owner = THIS_MODULE, + .open = escd_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int pnp_legacyres_proc_show(struct seq_file *m, void *v) +{ + void *buf; + + buf = kmalloc(65536, GFP_KERNEL); + if (!buf) + return -ENOMEM; + if (pnp_bios_get_stat_res(buf)) { + kfree(buf); + return -EIO; + } + + seq_write(m, buf, 65536); + kfree(buf); + return 0; +} + +static int pnp_legacyres_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, pnp_legacyres_proc_show, NULL); +} + +static const struct file_operations pnp_legacyres_proc_fops = { + .owner = THIS_MODULE, + .open = pnp_legacyres_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int pnp_devices_proc_show(struct seq_file *m, void *v) +{ + struct pnp_bios_node *node; + u8 nodenum; + + node = kzalloc(node_info.max_node_size, GFP_KERNEL); + if (!node) + return -ENOMEM; + + for (nodenum = 0; nodenum < 0xff;) { + u8 thisnodenum = nodenum; + + if (pnp_bios_get_dev_node(&nodenum, PNPMODE_DYNAMIC, node)) + break; + seq_printf(m, "%02x\t%08x\t%3phC\t%04x\n", + node->handle, node->eisa_id, + node->type_code, node->flags); + if (nodenum <= thisnodenum) { + printk(KERN_ERR + "%s Node number 0x%x is out of sequence following node 0x%x. Aborting.\n", + "PnPBIOS: proc_read_devices:", + (unsigned int)nodenum, + (unsigned int)thisnodenum); + break; + } + } + kfree(node); + return 0; +} + +static int pnp_devices_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, pnp_devices_proc_show, NULL); +} + +static const struct file_operations pnp_devices_proc_fops = { + .owner = THIS_MODULE, + .open = pnp_devices_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int pnpbios_proc_show(struct seq_file *m, void *v) +{ + void *data = m->private; + struct pnp_bios_node *node; + int boot = (long)data >> 8; + u8 nodenum = (long)data; + int len; + + node = kzalloc(node_info.max_node_size, GFP_KERNEL); + if (!node) + return -ENOMEM; + if (pnp_bios_get_dev_node(&nodenum, boot, node)) { + kfree(node); + return -EIO; + } + len = node->size - sizeof(struct pnp_bios_node); + seq_write(m, node->data, len); + kfree(node); + return 0; +} + +static int pnpbios_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, pnpbios_proc_show, PDE_DATA(inode)); +} + +static ssize_t pnpbios_proc_write(struct file *file, const char __user *buf, + size_t count, loff_t *pos) +{ + void *data = PDE_DATA(file_inode(file)); + struct pnp_bios_node *node; + int boot = (long)data >> 8; + u8 nodenum = (long)data; + int ret = count; + + node = kzalloc(node_info.max_node_size, GFP_KERNEL); + if (!node) + return -ENOMEM; + if (pnp_bios_get_dev_node(&nodenum, boot, node)) { + ret = -EIO; + goto out; + } + if (count != node->size - sizeof(struct pnp_bios_node)) { + ret = -EINVAL; + goto out; + } + if (copy_from_user(node->data, buf, count)) { + ret = -EFAULT; + goto out; + } + if (pnp_bios_set_dev_node(node->handle, boot, node) != 0) { + ret = -EINVAL; + goto out; + } + ret = count; +out: + kfree(node); + return ret; +} + +static const struct file_operations pnpbios_proc_fops = { + .owner = THIS_MODULE, + .open = pnpbios_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, + .write = pnpbios_proc_write, +}; + +int pnpbios_interface_attach_device(struct pnp_bios_node *node) +{ + char name[3]; + + sprintf(name, "%02x", node->handle); + + if (!proc_pnp) + return -EIO; + if (!pnpbios_dont_use_current_config) { + proc_create_data(name, 0644, proc_pnp, &pnpbios_proc_fops, + (void *)(long)(node->handle)); + } + + if (!proc_pnp_boot) + return -EIO; + if (proc_create_data(name, 0644, proc_pnp_boot, &pnpbios_proc_fops, + (void *)(long)(node->handle + 0x100))) + return 0; + return -EIO; +} + +/* + * When this is called, pnpbios functions are assumed to + * work and the pnpbios_dont_use_current_config flag + * should already have been set to the appropriate value + */ +int __init pnpbios_proc_init(void) +{ + proc_pnp = proc_mkdir("bus/pnp", NULL); + if (!proc_pnp) + return -EIO; + proc_pnp_boot = proc_mkdir("boot", proc_pnp); + if (!proc_pnp_boot) + return -EIO; + proc_create("devices", 0, proc_pnp, &pnp_devices_proc_fops); + proc_create("configuration_info", 0, proc_pnp, &pnpconfig_proc_fops); + proc_create("escd_info", 0, proc_pnp, &escd_info_proc_fops); + proc_create("escd", S_IRUSR, proc_pnp, &escd_proc_fops); + proc_create("legacy_device_resources", 0, proc_pnp, &pnp_legacyres_proc_fops); + + return 0; +} + +void __exit pnpbios_proc_exit(void) +{ + int i; + char name[3]; + + if (!proc_pnp) + return; + + for (i = 0; i < 0xff; i++) { + sprintf(name, "%02x", i); + if (!pnpbios_dont_use_current_config) + remove_proc_entry(name, proc_pnp); + remove_proc_entry(name, proc_pnp_boot); + } + remove_proc_entry("legacy_device_resources", proc_pnp); + remove_proc_entry("escd", proc_pnp); + remove_proc_entry("escd_info", proc_pnp); + remove_proc_entry("configuration_info", proc_pnp); + remove_proc_entry("devices", proc_pnp); + remove_proc_entry("boot", proc_pnp); + remove_proc_entry("bus/pnp", NULL); +} -- cgit 1.2.3-korg