proc.c (dca3a783400a18e2bf4503b1d4a85c4d0ca1a7e4) proc.c (d9dda78bad879595d8c4220a067fc029d6484a16)
1/*
2 * Procfs interface for the PCI bus.
3 *
4 * Copyright (c) 1997--1999 Martin Mares <mj@ucw.cz>
5 */
6
7#include <linux/init.h>
8#include <linux/pci.h>

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41 file->f_pos = new;
42 mutex_unlock(&inode->i_mutex);
43 return new;
44}
45
46static ssize_t
47proc_bus_pci_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos)
48{
1/*
2 * Procfs interface for the PCI bus.
3 *
4 * Copyright (c) 1997--1999 Martin Mares <mj@ucw.cz>
5 */
6
7#include <linux/init.h>
8#include <linux/pci.h>

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41 file->f_pos = new;
42 mutex_unlock(&inode->i_mutex);
43 return new;
44}
45
46static ssize_t
47proc_bus_pci_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos)
48{
49 const struct inode *ino = file_inode(file);
50 const struct proc_dir_entry *dp = PDE(ino);
51 struct pci_dev *dev = dp->data;
49 struct pci_dev *dev = PDE_DATA(file_inode(file));
52 unsigned int pos = *ppos;
53 unsigned int cnt, size;
54
55 /*
56 * Normal users can read only the standardized portion of the
57 * configuration space as several chips lock up when trying to read
58 * undefined locations (think of Intel PIIX4 as a typical example).
59 */
60
61 if (capable(CAP_SYS_ADMIN))
50 unsigned int pos = *ppos;
51 unsigned int cnt, size;
52
53 /*
54 * Normal users can read only the standardized portion of the
55 * configuration space as several chips lock up when trying to read
56 * undefined locations (think of Intel PIIX4 as a typical example).
57 */
58
59 if (capable(CAP_SYS_ADMIN))
62 size = dp->size;
60 size = dev->cfg_size;
63 else if (dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)
64 size = 128;
65 else
66 size = 64;
67
68 if (pos >= size)
69 return 0;
70 if (nbytes >= size)

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128 *ppos = pos;
129 return nbytes;
130}
131
132static ssize_t
133proc_bus_pci_write(struct file *file, const char __user *buf, size_t nbytes, loff_t *ppos)
134{
135 struct inode *ino = file_inode(file);
61 else if (dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)
62 size = 128;
63 else
64 size = 64;
65
66 if (pos >= size)
67 return 0;
68 if (nbytes >= size)

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126 *ppos = pos;
127 return nbytes;
128}
129
130static ssize_t
131proc_bus_pci_write(struct file *file, const char __user *buf, size_t nbytes, loff_t *ppos)
132{
133 struct inode *ino = file_inode(file);
136 const struct proc_dir_entry *dp = PDE(ino);
137 struct pci_dev *dev = dp->data;
134 struct pci_dev *dev = PDE_DATA(ino);
138 int pos = *ppos;
135 int pos = *ppos;
139 int size = dp->size;
136 int size = dev->cfg_size;
140 int cnt;
141
142 if (pos >= size)
143 return 0;
144 if (nbytes >= size)
145 nbytes = size;
146 if (pos + nbytes > size)
147 nbytes = size - pos;

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195 buf++;
196 pos++;
197 cnt--;
198 }
199
200 pci_config_pm_runtime_put(dev);
201
202 *ppos = pos;
137 int cnt;
138
139 if (pos >= size)
140 return 0;
141 if (nbytes >= size)
142 nbytes = size;
143 if (pos + nbytes > size)
144 nbytes = size - pos;

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192 buf++;
193 pos++;
194 cnt--;
195 }
196
197 pci_config_pm_runtime_put(dev);
198
199 *ppos = pos;
203 i_size_write(ino, dp->size);
200 i_size_write(ino, dev->cfg_size);
204 return nbytes;
205}
206
207struct pci_filp_private {
208 enum pci_mmap_state mmap_state;
209 int write_combine;
210};
211
212static long proc_bus_pci_ioctl(struct file *file, unsigned int cmd,
213 unsigned long arg)
214{
201 return nbytes;
202}
203
204struct pci_filp_private {
205 enum pci_mmap_state mmap_state;
206 int write_combine;
207};
208
209static long proc_bus_pci_ioctl(struct file *file, unsigned int cmd,
210 unsigned long arg)
211{
215 const struct proc_dir_entry *dp = PDE(file_inode(file));
216 struct pci_dev *dev = dp->data;
212 struct pci_dev *dev = PDE_DATA(file_inode(file));
217#ifdef HAVE_PCI_MMAP
218 struct pci_filp_private *fpriv = file->private_data;
219#endif /* HAVE_PCI_MMAP */
220 int ret = 0;
221
222 switch (cmd) {
223 case PCIIOC_CONTROLLER:
224 ret = pci_domain_nr(dev->bus);

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248 };
249
250 return ret;
251}
252
253#ifdef HAVE_PCI_MMAP
254static int proc_bus_pci_mmap(struct file *file, struct vm_area_struct *vma)
255{
213#ifdef HAVE_PCI_MMAP
214 struct pci_filp_private *fpriv = file->private_data;
215#endif /* HAVE_PCI_MMAP */
216 int ret = 0;
217
218 switch (cmd) {
219 case PCIIOC_CONTROLLER:
220 ret = pci_domain_nr(dev->bus);

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244 };
245
246 return ret;
247}
248
249#ifdef HAVE_PCI_MMAP
250static int proc_bus_pci_mmap(struct file *file, struct vm_area_struct *vma)
251{
256 struct inode *inode = file_inode(file);
257 const struct proc_dir_entry *dp = PDE(inode);
258 struct pci_dev *dev = dp->data;
252 struct pci_dev *dev = PDE_DATA(file_inode(file));
259 struct pci_filp_private *fpriv = file->private_data;
260 int i, ret;
261
262 if (!capable(CAP_SYS_RAWIO))
263 return -EPERM;
264
265 /* Make sure the caller is mapping a real resource for this device */
266 for (i = 0; i < PCI_ROM_RESOURCE; i++) {

--- 213 unchanged lines hidden --- 		253 struct pci_filp_private *fpriv = file->private_data;
254 int i, ret;
255
256 if (!capable(CAP_SYS_RAWIO))
257 return -EPERM;
258
259 /* Make sure the caller is mapping a real resource for this device */
260 for (i = 0; i < PCI_ROM_RESOURCE; i++) {

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