static ssize_t
i915_l3_read(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr, char *buf,
loff_t offset, size_t count)
{
struct device *dev = kobj_to_dev(kobj);
struct drm_minor *dminor = dev_to_drm_minor(dev);
struct drm_device *drm_dev = dminor->dev;
struct drm_i915_private *dev_priv = drm_dev->dev_private;
int slice = (int)(uintptr_t)attr->private;
int ret;
count = round_down(count, 4);
ret = l3_access_valid(drm_dev, offset);
if (ret)
return ret;
count = min_t(size_t, GEN7_L3LOG_SIZE - offset, count);
ret = i915_mutex_lock_interruptible(drm_dev);
if (ret)
return ret;
if (dev_priv->l3_parity.remap_info[slice])
memcpy(buf,
dev_priv->l3_parity.remap_info[slice] + (offset/4),
count);
else
memset(buf, 0, count);
mutex_unlock(&drm_dev->struct_mutex);
return count;
}
static ssize_t
i915_l3_write(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr, char *buf,
loff_t offset, size_t count)
{
struct device *dev = kobj_to_dev(kobj);
struct drm_minor *dminor = dev_to_drm_minor(dev);
struct drm_device *drm_dev = dminor->dev;
struct drm_i915_private *dev_priv = drm_dev->dev_private;
struct intel_context *ctx;
u32 *temp = NULL; /* Just here to make handling failures easy */
int slice = (int)(uintptr_t)attr->private;
int ret;
if (!HAS_HW_CONTEXTS(drm_dev))
return -ENXIO;
ret = l3_access_valid(drm_dev, offset);
if (ret)
return ret;
ret = i915_mutex_lock_interruptible(drm_dev);
if (ret)
return ret;
if (!dev_priv->l3_parity.remap_info[slice]) {
temp = kzalloc(GEN7_L3LOG_SIZE, GFP_KERNEL);
if (!temp) {
mutex_unlock(&drm_dev->struct_mutex);
return -ENOMEM;
}
}
ret = i915_gpu_idle(drm_dev);
if (ret) {
kfree(temp);
mutex_unlock(&drm_dev->struct_mutex);
return ret;
}
/* TODO: Ideally we really want a GPU reset here to make sure errors
* aren't propagated. Since I cannot find a stable way to reset the GPU
* at this point it is left as a TODO.
*/
if (temp)
dev_priv->l3_parity.remap_info[slice] = temp;
memcpy(dev_priv->l3_parity.remap_info[slice] + (offset/4), buf, count);
/* NB: We defer the remapping until we switch to the context */
list_for_each_entry(ctx, &dev_priv->context_list, link)
ctx->remap_slice |= (1<<slice);
mutex_unlock(&drm_dev->struct_mutex);
return count;
}
static ssize_t pch_phub_bin_write(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr,
char *buf, loff_t off, size_t count)
{
int err;
unsigned int addr_offset;
int ret;
ssize_t rom_size;
struct pch_phub_reg *chip = dev_get_drvdata(kobj_to_dev(kobj));
ret = mutex_lock_interruptible(&pch_phub_mutex);
if (ret)
return -ERESTARTSYS;
if (off > PCH_PHUB_OROM_SIZE) {
addr_offset = 0;
goto return_ok;
}
if (count > PCH_PHUB_OROM_SIZE) {
addr_offset = 0;
goto return_ok;
}
chip->pch_phub_extrom_base_address = pci_map_rom(chip->pdev, &rom_size);
if (!chip->pch_phub_extrom_base_address) {
err = -ENOMEM;
goto exrom_map_err;
}
for (addr_offset = 0; addr_offset < count; addr_offset++) {
if (PCH_PHUB_OROM_SIZE < off + addr_offset)
goto return_ok;
ret = pch_phub_write_serial_rom(chip,
chip->pch_opt_rom_start_address + addr_offset + off,
buf[addr_offset]);
if (ret) {
err = ret;
goto return_err;
}
}
return_ok:
pci_unmap_rom(chip->pdev, chip->pch_phub_extrom_base_address);
mutex_unlock(&pch_phub_mutex);
return addr_offset;
return_err:
pci_unmap_rom(chip->pdev, chip->pch_phub_extrom_base_address);
exrom_map_err:
mutex_unlock(&pch_phub_mutex);
return err;
}
static ssize_t util_string_read(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr, char *buf,
loff_t off, size_t count)
{
struct device *dev = kobj_to_dev(kobj);
struct pci_dev *pdev = to_pci_dev(dev);
struct zpci_dev *zdev = get_zdev(pdev);
return memory_read_from_buffer(buf, count, &off, zdev->util_str,
sizeof(zdev->util_str));
}
static umode_t csrow_dev_is_visible(struct kobject *kobj,
struct attribute *attr, int idx)
{
struct device *dev = kobj_to_dev(kobj);
struct csrow_info *csrow = container_of(dev, struct csrow_info, dev);
if (idx >= csrow->nr_channels)
return 0;
/* Only expose populated DIMMs */
if (!csrow->channels[idx]->dimm->nr_pages)
return 0;
return attr->mode;
}
/*
* eeprom_read() - EEPROM sysfs-node read callback
* @filep: Pointer to the file system node
* @kobj: Pointer to the kernel object related to the sysfs-node
* @attr: Attributes of the file
* @buf: Buffer to write data to
* @off: Offset at which data should be written to
* @count: Number of bytes to write
*/
static ssize_t eeprom_read(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr,
char *buf, loff_t off, size_t count)
{
struct idt_89hpesx_dev *pdev;
int ret;
/* Retrieve driver data */
pdev = dev_get_drvdata(kobj_to_dev(kobj));
/* Perform EEPROM read operation */
ret = idt_eeprom_read(pdev, (u16)off, (u16)count, (u8 *)buf);
return (ret != 0 ? ret : count);
}
static umode_t mci_attr_is_visible(struct kobject *kobj,
struct attribute *attr, int idx)
{
struct device *dev = kobj_to_dev(kobj);
struct mem_ctl_info *mci = to_mci(dev);
umode_t mode = 0;
if (attr != &dev_attr_sdram_scrub_rate.attr)
return attr->mode;
if (mci->get_sdram_scrub_rate)
mode |= S_IRUGO;
if (mci->set_sdram_scrub_rate)
mode |= S_IWUSR;
return mode;
}
static umode_t
armv8pmu_event_attr_is_visible(struct kobject *kobj,
struct attribute *attr, int unused)
{
struct device *dev = kobj_to_dev(kobj);
struct pmu *pmu = dev_get_drvdata(dev);
struct arm_pmu *cpu_pmu = container_of(pmu, struct arm_pmu, pmu);
struct perf_pmu_events_attr *pmu_attr;
pmu_attr = container_of(attr, struct perf_pmu_events_attr, attr.attr);
if (test_bit(pmu_attr->id, cpu_pmu->pmceid_bitmap))
return attr->mode;
return 0;
}
static ssize_t
i915_l3_write(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr, char *buf,
loff_t offset, size_t count)
{
struct device *kdev = kobj_to_dev(kobj);
struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev);
struct drm_device *dev = &dev_priv->drm;
struct i915_gem_context *ctx;
int slice = (int)(uintptr_t)attr->private;
u32 **remap_info;
int ret;
ret = l3_access_valid(dev_priv, offset);
if (ret)
return ret;
ret = i915_mutex_lock_interruptible(dev);
if (ret)
return ret;
remap_info = &dev_priv->l3_parity.remap_info[slice];
if (!*remap_info) {
*remap_info = kzalloc(GEN7_L3LOG_SIZE, GFP_KERNEL);
if (!*remap_info) {
ret = -ENOMEM;
goto out;
}
}
/* TODO: Ideally we really want a GPU reset here to make sure errors
* aren't propagated. Since I cannot find a stable way to reset the GPU
* at this point it is left as a TODO.
*/
memcpy(*remap_info + (offset/4), buf, count);
/* NB: We defer the remapping until we switch to the context */
list_for_each_entry(ctx, &dev_priv->context_list, link)
ctx->remap_slice |= (1<<slice);
ret = count;
out:
mutex_unlock(&dev->struct_mutex);
return ret;
}
static ssize_t zorro_read_config(struct file *filp, struct kobject *kobj,
struct bin_attribute *bin_attr,
char *buf, loff_t off, size_t count)
{
struct zorro_dev *z = to_zorro_dev(kobj_to_dev(kobj));
struct ConfigDev cd;
/* Construct a ConfigDev */
memset(&cd, 0, sizeof(cd));
cd.cd_Rom = z->rom;
cd.cd_SlotAddr = cpu_to_be16(z->slotaddr);
cd.cd_SlotSize = cpu_to_be16(z->slotsize);
cd.cd_BoardAddr = cpu_to_be32(zorro_resource_start(z));
cd.cd_BoardSize = cpu_to_be32(zorro_resource_len(z));
return memory_read_from_buffer(buf, count, &off, &cd, sizeof(cd));
}
static ssize_t report_error_write(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr, char *buf,
loff_t off, size_t count)
{
struct zpci_report_error_header *report = (void *) buf;
struct device *dev = kobj_to_dev(kobj);
struct pci_dev *pdev = to_pci_dev(dev);
struct zpci_dev *zdev = to_zpci(pdev);
int ret;
if (off || (count < sizeof(*report)))
return -EINVAL;
ret = sclp_pci_report(report, zdev->fh, zdev->fid);
return ret ? ret : count;
}
static ssize_t pyra_sysfs_read_profilex_buttons(struct file *fp,
struct kobject *kobj, struct bin_attribute *attr, char *buf,
loff_t off, size_t count)
{
struct device *dev = kobj_to_dev(kobj)->parent->parent;
struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
ssize_t retval;
retval = pyra_send_control(usb_dev, *(uint *)(attr->private),
PYRA_CONTROL_REQUEST_PROFILE_BUTTONS);
if (retval)
return retval;
return pyra_sysfs_read(fp, kobj, buf, off, count,
PYRA_SIZE_PROFILE_BUTTONS,
PYRA_COMMAND_PROFILE_BUTTONS);
}
ssize_t roccat_common2_sysfs_write(struct file *fp, struct kobject *kobj,
void const *buf, loff_t off, size_t count,
size_t real_size, uint command)
{
struct device *dev = kobj_to_dev(kobj)->parent->parent;
struct roccat_common2_device *roccat_dev = hid_get_drvdata(dev_get_drvdata(dev));
struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
int retval;
if (off != 0 || count != real_size)
return -EINVAL;
mutex_lock(&roccat_dev->lock);
retval = roccat_common2_send_with_status(usb_dev, command, buf, real_size);
mutex_unlock(&roccat_dev->lock);
return retval ? retval : real_size;
}
static umode_t csrow_dev_is_visible(struct kobject *kobj,
struct attribute *attr, int idx)
{
struct device *dev = kobj_to_dev(kobj);
struct csrow_info *csrow = container_of(dev, struct csrow_info, dev);
if (idx >= csrow->nr_channels)
return 0;
if (idx >= ARRAY_SIZE(dynamic_csrow_ce_count_attr) - 1) {
WARN_ONCE(1, "idx: %d\n", idx);
return 0;
}
/* Only expose populated DIMMs */
if (!csrow->channels[idx]->dimm->nr_pages)
return 0;
return attr->mode;
}
/*
* Export the forwarding information table as a binary file
* The records are struct __fdb_entry.
*
* Returns the number of bytes read.
*/
static ssize_t brforward_read(struct file *filp, struct kobject *kobj,
struct bin_attribute *bin_attr,
char *buf, loff_t off, size_t count)
{
struct device *dev = kobj_to_dev(kobj);
struct net_bridge *br = to_bridge(dev);
int n;
/* must read whole records */
if (off % sizeof(struct __fdb_entry) != 0)
return -EINVAL;
n = br_fdb_fillbuf(br, buf,
count / sizeof(struct __fdb_entry),
off / sizeof(struct __fdb_entry));
if (n > 0)
n *= sizeof(struct __fdb_entry);
return n;
}
static ssize_t pyra_sysfs_write_settings(struct file *fp,
struct kobject *kobj, struct bin_attribute *attr, char *buf,
loff_t off, size_t count)
{
struct device *dev = kobj_to_dev(kobj)->parent->parent;
struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
int retval = 0;
struct pyra_roccat_report roccat_report;
struct pyra_settings const *settings;
if (off != 0 || count != PYRA_SIZE_SETTINGS)
return -EINVAL;
settings = (struct pyra_settings const *)buf;
if (settings->startup_profile >= ARRAY_SIZE(pyra->profile_settings))
return -EINVAL;
mutex_lock(&pyra->pyra_lock);
retval = pyra_set_settings(usb_dev, settings);
if (retval) {
mutex_unlock(&pyra->pyra_lock);
return retval;
}
profile_activated(pyra, settings->startup_profile);
roccat_report.type = PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2;
roccat_report.value = settings->startup_profile + 1;
roccat_report.key = 0;
roccat_report_event(pyra->chrdev_minor,
(uint8_t const *)&roccat_report);
mutex_unlock(&pyra->pyra_lock);
return PYRA_SIZE_SETTINGS;
}
static ssize_t pyra_sysfs_read(struct file *fp, struct kobject *kobj,
char *buf, loff_t off, size_t count,
size_t real_size, uint command)
{
struct device *dev = kobj_to_dev(kobj)->parent->parent;
struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
int retval;
if (off >= real_size)
return 0;
if (off != 0 || count != real_size)
return -EINVAL;
mutex_lock(&pyra->pyra_lock);
retval = roccat_common2_receive(usb_dev, command, buf, real_size);
mutex_unlock(&pyra->pyra_lock);
if (retval)
return retval;
return real_size;
}
static ssize_t pch_phub_bin_read(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr, char *buf,
loff_t off, size_t count)
{
unsigned int rom_signature;
unsigned char rom_length;
unsigned int tmp;
unsigned int addr_offset;
unsigned int orom_size;
int ret;
int err;
ssize_t rom_size;
struct pch_phub_reg *chip = dev_get_drvdata(kobj_to_dev(kobj));
ret = mutex_lock_interruptible(&pch_phub_mutex);
if (ret) {
err = -ERESTARTSYS;
goto return_err_nomutex;
}
/* Get Rom signature */
chip->pch_phub_extrom_base_address = pci_map_rom(chip->pdev, &rom_size);
if (!chip->pch_phub_extrom_base_address) {
err = -ENODATA;
goto exrom_map_err;
}
pch_phub_read_serial_rom(chip, chip->pch_opt_rom_start_address,
(unsigned char *)&rom_signature);
rom_signature &= 0xff;
pch_phub_read_serial_rom(chip, chip->pch_opt_rom_start_address + 1,
(unsigned char *)&tmp);
rom_signature |= (tmp & 0xff) << 8;
if (rom_signature == 0xAA55) {
pch_phub_read_serial_rom(chip,
chip->pch_opt_rom_start_address + 2,
&rom_length);
orom_size = rom_length * 512;
if (orom_size < off) {
addr_offset = 0;
goto return_ok;
}
if (orom_size < count) {
addr_offset = 0;
goto return_ok;
}
for (addr_offset = 0; addr_offset < count; addr_offset++) {
pch_phub_read_serial_rom(chip,
chip->pch_opt_rom_start_address + addr_offset + off,
&buf[addr_offset]);
}
} else {
err = -ENODATA;
goto return_err;
}
return_ok:
pci_unmap_rom(chip->pdev, chip->pch_phub_extrom_base_address);
mutex_unlock(&pch_phub_mutex);
return addr_offset;
return_err:
pci_unmap_rom(chip->pdev, chip->pch_phub_extrom_base_address);
exrom_map_err:
mutex_unlock(&pch_phub_mutex);
return_err_nomutex:
return err;
}
