diff options
Diffstat (limited to 'drivers/iommu/omap-iommu-debug.c')
-rw-r--r-- | drivers/iommu/omap-iommu-debug.c | 114 |
1 files changed, 0 insertions, 114 deletions
diff --git a/drivers/iommu/omap-iommu-debug.c b/drivers/iommu/omap-iommu-debug.c index 80fffba7f12d..531658d17333 100644 --- a/drivers/iommu/omap-iommu-debug.c +++ b/drivers/iommu/omap-iommu-debug.c @@ -213,116 +213,6 @@ static ssize_t debug_read_pagetable(struct file *file, char __user *userbuf, return bytes; } -static ssize_t debug_read_mmap(struct file *file, char __user *userbuf, - size_t count, loff_t *ppos) -{ - struct device *dev = file->private_data; - struct omap_iommu *obj = dev_to_omap_iommu(dev); - char *p, *buf; - struct iovm_struct *tmp; - int uninitialized_var(i); - ssize_t bytes; - - buf = (char *)__get_free_page(GFP_KERNEL); - if (!buf) - return -ENOMEM; - p = buf; - - p += sprintf(p, "%-3s %-8s %-8s %6s %8s\n", - "No", "start", "end", "size", "flags"); - p += sprintf(p, "-------------------------------------------------\n"); - - mutex_lock(&iommu_debug_lock); - - list_for_each_entry(tmp, &obj->mmap, list) { - size_t len; - const char *str = "%3d %08x-%08x %6x %8x\n"; - const int maxcol = 39; - - len = tmp->da_end - tmp->da_start; - p += snprintf(p, maxcol, str, - i, tmp->da_start, tmp->da_end, len, tmp->flags); - - if (PAGE_SIZE - (p - buf) < maxcol) - break; - i++; - } - - bytes = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); - - mutex_unlock(&iommu_debug_lock); - free_page((unsigned long)buf); - - return bytes; -} - -static ssize_t debug_read_mem(struct file *file, char __user *userbuf, - size_t count, loff_t *ppos) -{ - struct device *dev = file->private_data; - char *p, *buf; - struct iovm_struct *area; - ssize_t bytes; - - count = min_t(ssize_t, count, PAGE_SIZE); - - buf = (char *)__get_free_page(GFP_KERNEL); - if (!buf) - return -ENOMEM; - p = buf; - - mutex_lock(&iommu_debug_lock); - - area = omap_find_iovm_area(dev, (u32)ppos); - if (!area) { - bytes = -EINVAL; - goto err_out; - } - memcpy(p, area->va, count); - p += count; - - bytes = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); -err_out: - mutex_unlock(&iommu_debug_lock); - free_page((unsigned long)buf); - - return bytes; -} - -static ssize_t debug_write_mem(struct file *file, const char __user *userbuf, - size_t count, loff_t *ppos) -{ - struct device *dev = file->private_data; - struct iovm_struct *area; - char *p, *buf; - - count = min_t(size_t, count, PAGE_SIZE); - - buf = (char *)__get_free_page(GFP_KERNEL); - if (!buf) - return -ENOMEM; - p = buf; - - mutex_lock(&iommu_debug_lock); - - if (copy_from_user(p, userbuf, count)) { - count = -EFAULT; - goto err_out; - } - - area = omap_find_iovm_area(dev, (u32)ppos); - if (!area) { - count = -EINVAL; - goto err_out; - } - memcpy(area->va, p, count); -err_out: - mutex_unlock(&iommu_debug_lock); - free_page((unsigned long)buf); - - return count; -} - #define DEBUG_FOPS(name) \ static const struct file_operations debug_##name##_fops = { \ .open = simple_open, \ @@ -342,8 +232,6 @@ DEBUG_FOPS_RO(ver); DEBUG_FOPS_RO(regs); DEBUG_FOPS_RO(tlb); DEBUG_FOPS(pagetable); -DEBUG_FOPS_RO(mmap); -DEBUG_FOPS(mem); #define __DEBUG_ADD_FILE(attr, mode) \ { \ @@ -389,8 +277,6 @@ static int iommu_debug_register(struct device *dev, void *data) DEBUG_ADD_FILE_RO(regs); DEBUG_ADD_FILE_RO(tlb); DEBUG_ADD_FILE(pagetable); - DEBUG_ADD_FILE_RO(mmap); - DEBUG_ADD_FILE(mem); return 0; |