194 lines
4.9 KiB
Diff
194 lines
4.9 KiB
Diff
From e9db9a1035224a30ebb6be44e760e57518d19533 Mon Sep 17 00:00:00 2001
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From: Luke Diamand <luked@broadcom.com>
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Date: Sat, 28 Dec 2013 07:39:51 +0000
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Subject: [PATCH 144/174] vc_mem: tidy up debug procfs code
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Remove commented-out procfs code, which was generating
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a warning and no longer worked. Replace this with
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equivalent debugfs entries.
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Signed-off-by: Luke Diamand <luked@broadcom.com>
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---
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arch/arm/mach-bcm2708/vc_mem.c | 119 +++++++++++++++++------------------------
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1 file changed, 49 insertions(+), 70 deletions(-)
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--- a/arch/arm/mach-bcm2708/vc_mem.c
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+++ b/arch/arm/mach-bcm2708/vc_mem.c
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@@ -19,7 +19,7 @@
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#include <linux/cdev.h>
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#include <linux/mm.h>
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#include <linux/slab.h>
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-#include <linux/proc_fs.h>
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+#include <linux/debugfs.h>
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#include <asm/uaccess.h>
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#include <linux/dma-mapping.h>
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@@ -51,8 +51,9 @@ static struct class *vc_mem_class = NULL
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static struct cdev vc_mem_cdev;
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static int vc_mem_inited = 0;
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-// Proc entry
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-static struct proc_dir_entry *vc_mem_proc_entry;
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+#ifdef CONFIG_DEBUG_FS
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+static struct dentry *vc_mem_debugfs_entry;
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+#endif
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/*
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* Videocore memory addresses and size
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@@ -280,75 +281,60 @@ static const struct file_operations vc_m
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.mmap = vc_mem_mmap,
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};
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-/****************************************************************************
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-*
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-* vc_mem_proc_read
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-*
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-***************************************************************************/
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-
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-static int
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-vc_mem_proc_read(char *buf, char **start, off_t offset, int count, int *eof,
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- void *data)
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+#ifdef CONFIG_DEBUG_FS
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+static void vc_mem_debugfs_deinit(void)
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{
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- char *p = buf;
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-
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- (void) start;
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- (void) count;
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- (void) data;
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-
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- if (offset > 0) {
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- *eof = 1;
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- return 0;
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- }
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- // Get the videocore memory size first
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- vc_mem_get_size();
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-
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- p += sprintf(p, "Videocore memory:\n");
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- if (mm_vc_mem_phys_addr != 0)
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- p += sprintf(p, " Physical address: 0x%p\n",
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- (void *) mm_vc_mem_phys_addr);
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- else
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- p += sprintf(p, " Physical address: 0x00000000\n");
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- p += sprintf(p, " Length (bytes): %u\n", mm_vc_mem_size);
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-
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- *eof = 1;
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- return p - buf;
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+ debugfs_remove_recursive(vc_mem_debugfs_entry);
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+ vc_mem_debugfs_entry = NULL;
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}
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-/****************************************************************************
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-*
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-* vc_mem_proc_write
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-*
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-***************************************************************************/
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-static int
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-vc_mem_proc_write(struct file *file, const char __user * buffer,
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- unsigned long count, void *data)
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+static int vc_mem_debugfs_init(
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+ struct device *dev)
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{
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- int rc = -EFAULT;
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- char input_str[10];
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-
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- memset(input_str, 0, sizeof (input_str));
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-
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- if (count > sizeof (input_str)) {
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- LOG_ERR("%s: input string length too long", __func__);
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- goto out;
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- }
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-
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- if (copy_from_user(input_str, buffer, count - 1)) {
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- LOG_ERR("%s: failed to get input string", __func__);
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- goto out;
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+ vc_mem_debugfs_entry = debugfs_create_dir(DRIVER_NAME, NULL);
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+ if (!vc_mem_debugfs_entry) {
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+ dev_warn(dev, "could not create debugfs entry\n");
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+ return -EFAULT;
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+ }
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+
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+ if (!debugfs_create_x32("vc_mem_phys_addr",
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+ 0444,
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+ vc_mem_debugfs_entry,
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+ (u32 *)&mm_vc_mem_phys_addr)) {
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+ dev_warn(dev, "%s:could not create vc_mem_phys entry\n",
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+ __func__);
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+ goto fail;
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+ }
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+
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+ if (!debugfs_create_x32("vc_mem_size",
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+ 0444,
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+ vc_mem_debugfs_entry,
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+ (u32 *)&mm_vc_mem_size)) {
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+ dev_warn(dev, "%s:could not create vc_mem_size entry\n",
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+ __func__);
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+ goto fail;
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+ }
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+
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+ if (!debugfs_create_x32("vc_mem_base",
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+ 0444,
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+ vc_mem_debugfs_entry,
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+ (u32 *)&mm_vc_mem_base)) {
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+ dev_warn(dev, "%s:could not create vc_mem_base entry\n",
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+ __func__);
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+ goto fail;
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}
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- if (strncmp(input_str, "connect", strlen("connect")) == 0) {
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- // Get the videocore memory size from the videocore
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- vc_mem_get_size();
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- }
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+ return 0;
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- out:
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- return rc;
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+fail:
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+ vc_mem_debugfs_deinit();
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+ return -EFAULT;
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}
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+#endif /* CONFIG_DEBUG_FS */
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+
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+
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/****************************************************************************
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*
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* vc_mem_init
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@@ -398,21 +384,14 @@ vc_mem_init(void)
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goto out_class_destroy;
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}
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-#if 0
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- vc_mem_proc_entry = create_proc_entry(DRIVER_NAME, 0444, NULL);
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- if (vc_mem_proc_entry == NULL) {
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- rc = -EFAULT;
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- LOG_ERR("%s: create_proc_entry failed", __func__);
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- goto out_device_destroy;
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- }
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- vc_mem_proc_entry->read_proc = vc_mem_proc_read;
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- vc_mem_proc_entry->write_proc = vc_mem_proc_write;
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+#ifdef CONFIG_DEBUG_FS
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+ /* don't fail if the debug entries cannot be created */
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+ vc_mem_debugfs_init(dev);
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#endif
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vc_mem_inited = 1;
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return 0;
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- out_device_destroy:
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device_destroy(vc_mem_class, vc_mem_devnum);
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out_class_destroy:
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@@ -441,8 +420,8 @@ vc_mem_exit(void)
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LOG_DBG("%s: called", __func__);
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if (vc_mem_inited) {
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-#if 0
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- remove_proc_entry(vc_mem_proc_entry->name, NULL);
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+#if CONFIG_DEBUG_FS
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+ vc_mem_debugfs_deinit();
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#endif
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device_destroy(vc_mem_class, vc_mem_devnum);
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class_destroy(vc_mem_class);
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