diff options
Diffstat (limited to 'drivers/pci/proc.c')
| -rw-r--r-- | drivers/pci/proc.c | 107 |
1 files changed, 31 insertions, 76 deletions
diff --git a/drivers/pci/proc.c b/drivers/pci/proc.c index 297b72c880a..3f155e78513 100644 --- a/drivers/pci/proc.c +++ b/drivers/pci/proc.c @@ -10,7 +10,6 @@ #include <linux/module.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> -#include <linux/smp_lock.h> #include <linux/capability.h> #include <asm/uaccess.h> #include <asm/byteorder.h> @@ -18,38 +17,16 @@ static int proc_initialized; /* = 0 */ -static loff_t -proc_bus_pci_lseek(struct file *file, loff_t off, int whence) +static loff_t proc_bus_pci_lseek(struct file *file, loff_t off, int whence) { - loff_t new = -1; - struct inode *inode = file->f_path.dentry->d_inode; - - mutex_lock(&inode->i_mutex); - switch (whence) { - case 0: - new = off; - break; - case 1: - new = file->f_pos + off; - break; - case 2: - new = inode->i_size + off; - break; - } - if (new < 0 || new > inode->i_size) - new = -EINVAL; - else - file->f_pos = new; - mutex_unlock(&inode->i_mutex); - return new; + struct pci_dev *dev = PDE_DATA(file_inode(file)); + return fixed_size_llseek(file, off, whence, dev->cfg_size); } -static ssize_t -proc_bus_pci_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos) +static ssize_t proc_bus_pci_read(struct file *file, char __user *buf, + size_t nbytes, loff_t *ppos) { - const struct inode *ino = file->f_path.dentry->d_inode; - const struct proc_dir_entry *dp = PDE(ino); - struct pci_dev *dev = dp->data; + struct pci_dev *dev = PDE_DATA(file_inode(file)); unsigned int pos = *ppos; unsigned int cnt, size; @@ -60,7 +37,7 @@ proc_bus_pci_read(struct file *file, char __user *buf, size_t nbytes, loff_t *pp */ if (capable(CAP_SYS_ADMIN)) - size = dp->size; + size = dev->cfg_size; else if (dev->hdr_type == PCI_HEADER_TYPE_CARDBUS) size = 128; else @@ -77,6 +54,8 @@ proc_bus_pci_read(struct file *file, char __user *buf, size_t nbytes, loff_t *pp if (!access_ok(VERIFY_WRITE, buf, cnt)) return -EINVAL; + pci_config_pm_runtime_get(dev); + if ((pos & 1) && cnt) { unsigned char val; pci_user_read_config_byte(dev, pos, &val); @@ -122,18 +101,19 @@ proc_bus_pci_read(struct file *file, char __user *buf, size_t nbytes, loff_t *pp cnt--; } + pci_config_pm_runtime_put(dev); + *ppos = pos; return nbytes; } -static ssize_t -proc_bus_pci_write(struct file *file, const char __user *buf, size_t nbytes, loff_t *ppos) +static ssize_t proc_bus_pci_write(struct file *file, const char __user *buf, + size_t nbytes, loff_t *ppos) { - struct inode *ino = file->f_path.dentry->d_inode; - const struct proc_dir_entry *dp = PDE(ino); - struct pci_dev *dev = dp->data; + struct inode *ino = file_inode(file); + struct pci_dev *dev = PDE_DATA(ino); int pos = *ppos; - int size = dp->size; + int size = dev->cfg_size; int cnt; if (pos >= size) @@ -147,6 +127,8 @@ proc_bus_pci_write(struct file *file, const char __user *buf, size_t nbytes, lof if (!access_ok(VERIFY_READ, buf, cnt)) return -EINVAL; + pci_config_pm_runtime_get(dev); + if ((pos & 1) && cnt) { unsigned char val; __get_user(val, buf); @@ -192,8 +174,10 @@ proc_bus_pci_write(struct file *file, const char __user *buf, size_t nbytes, lof cnt--; } + pci_config_pm_runtime_put(dev); + *ppos = pos; - i_size_write(ino, dp->size); + i_size_write(ino, dev->cfg_size); return nbytes; } @@ -205,8 +189,7 @@ struct pci_filp_private { static long proc_bus_pci_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { - const struct proc_dir_entry *dp = PDE(file->f_dentry->d_inode); - struct pci_dev *dev = dp->data; + struct pci_dev *dev = PDE_DATA(file_inode(file)); #ifdef HAVE_PCI_MMAP struct pci_filp_private *fpriv = file->private_data; #endif /* HAVE_PCI_MMAP */ @@ -238,7 +221,7 @@ static long proc_bus_pci_ioctl(struct file *file, unsigned int cmd, default: ret = -EINVAL; break; - }; + } return ret; } @@ -246,9 +229,7 @@ static long proc_bus_pci_ioctl(struct file *file, unsigned int cmd, #ifdef HAVE_PCI_MMAP static int proc_bus_pci_mmap(struct file *file, struct vm_area_struct *vma) { - struct inode *inode = file->f_path.dentry->d_inode; - const struct proc_dir_entry *dp = PDE(inode); - struct pci_dev *dev = dp->data; + struct pci_dev *dev = PDE_DATA(file_inode(file)); struct pci_filp_private *fpriv = file->private_data; int i, ret; @@ -257,7 +238,7 @@ static int proc_bus_pci_mmap(struct file *file, struct vm_area_struct *vma) /* Make sure the caller is mapping a real resource for this device */ for (i = 0; i < PCI_ROM_RESOURCE; i++) { - if (pci_mmap_fits(dev, i, vma)) + if (pci_mmap_fits(dev, i, vma, PCI_MMAP_PROCFS)) break; } @@ -418,7 +399,7 @@ int pci_proc_attach_device(struct pci_dev *dev) &proc_bus_pci_operations, dev); if (!e) return -ENOMEM; - e->size = dev->cfg_size; + proc_set_size(e, dev->cfg_size); dev->procent = e; return 0; @@ -426,39 +407,14 @@ int pci_proc_attach_device(struct pci_dev *dev) int pci_proc_detach_device(struct pci_dev *dev) { - struct proc_dir_entry *e; - - if ((e = dev->procent)) { - remove_proc_entry(e->name, dev->bus->procdir); - dev->procent = NULL; - } + proc_remove(dev->procent); + dev->procent = NULL; return 0; } -#if 0 -int pci_proc_attach_bus(struct pci_bus* bus) +int pci_proc_detach_bus(struct pci_bus *bus) { - struct proc_dir_entry *de = bus->procdir; - - if (!proc_initialized) - return -EACCES; - - if (!de) { - char name[16]; - sprintf(name, "%02x", bus->number); - de = bus->procdir = proc_mkdir(name, proc_bus_pci_dir); - if (!de) - return -ENOMEM; - } - return 0; -} -#endif /* 0 */ - -int pci_proc_detach_bus(struct pci_bus* bus) -{ - struct proc_dir_entry *de = bus->procdir; - if (de) - remove_proc_entry(de->name, proc_bus_pci_dir); + proc_remove(bus->procdir); return 0; } @@ -466,6 +422,7 @@ static int proc_bus_pci_dev_open(struct inode *inode, struct file *file) { return seq_open(file, &proc_bus_pci_devices_op); } + static const struct file_operations proc_bus_pci_dev_operations = { .owner = THIS_MODULE, .open = proc_bus_pci_dev_open, @@ -486,6 +443,4 @@ static int __init pci_proc_init(void) return 0; } - device_initcall(pci_proc_init); - |