diff options
| -rw-r--r-- | drivers/iommu/omap-iommu-debug.c | 48 |
1 files changed, 14 insertions, 34 deletions
diff --git a/drivers/iommu/omap-iommu-debug.c b/drivers/iommu/omap-iommu-debug.c index e9f116f18531..0717aa96ce39 100644 --- a/drivers/iommu/omap-iommu-debug.c +++ b/drivers/iommu/omap-iommu-debug.c @@ -133,26 +133,18 @@ __dump_tlb_entries(struct omap_iommu *obj, struct cr_regs *crs, int num) } static ssize_t iotlb_dump_cr(struct omap_iommu *obj, struct cr_regs *cr, - char *buf) + struct seq_file *s) { - char *p = buf; - - /* FIXME: Need more detail analysis of cam/ram */ - p += sprintf(p, "%08x %08x %01x\n", cr->cam, cr->ram, - (cr->cam & MMU_CAM_P) ? 1 : 0); - - return p - buf; + return seq_printf(s, "%08x %08x %01x\n", cr->cam, cr->ram, + (cr->cam & MMU_CAM_P) ? 1 : 0); } -static size_t omap_dump_tlb_entries(struct omap_iommu *obj, char *buf, - ssize_t bytes) +static size_t omap_dump_tlb_entries(struct omap_iommu *obj, struct seq_file *s) { int i, num; struct cr_regs *cr; - char *p = buf; - num = bytes / sizeof(*cr); - num = min(obj->nr_tlb_entries, num); + num = obj->nr_tlb_entries; cr = kcalloc(num, sizeof(*cr), GFP_KERNEL); if (!cr) @@ -160,40 +152,28 @@ static size_t omap_dump_tlb_entries(struct omap_iommu *obj, char *buf, num = __dump_tlb_entries(obj, cr, num); for (i = 0; i < num; i++) - p += iotlb_dump_cr(obj, cr + i, p); + iotlb_dump_cr(obj, cr + i, s); kfree(cr); - return p - buf; + return 0; } -static ssize_t debug_read_tlb(struct file *file, char __user *userbuf, - size_t count, loff_t *ppos) +static int debug_read_tlb(struct seq_file *s, void *data) { - struct omap_iommu *obj = file->private_data; - char *p, *buf; - ssize_t bytes, rest; + struct omap_iommu *obj = s->private; if (is_omap_iommu_detached(obj)) return -EPERM; - buf = kmalloc(count, GFP_KERNEL); - if (!buf) - return -ENOMEM; - p = buf; - mutex_lock(&iommu_debug_lock); - p += sprintf(p, "%8s %8s\n", "cam:", "ram:"); - p += sprintf(p, "-----------------------------------------\n"); - rest = count - (p - buf); - p += omap_dump_tlb_entries(obj, p, rest); - - bytes = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); + seq_printf(s, "%8s %8s\n", "cam:", "ram:"); + seq_puts(s, "-----------------------------------------\n"); + omap_dump_tlb_entries(obj, s); mutex_unlock(&iommu_debug_lock); - kfree(buf); - return bytes; + return 0; } static void dump_ioptable(struct seq_file *s) @@ -268,7 +248,7 @@ static int debug_read_pagetable(struct seq_file *s, void *data) } DEBUG_FOPS_RO(regs); -DEBUG_FOPS_RO(tlb); +DEBUG_SEQ_FOPS_RO(tlb); DEBUG_SEQ_FOPS_RO(pagetable); #define __DEBUG_ADD_FILE(attr, mode) \ |