#include <linux/debugfs.h>
#include <linux/fs.h>
#include <linux/seq_file.h>
+#include <linux/slab.h>
#include <linux/stat.h>
+#include <linux/mmc/card.h>
#include <linux/mmc/host.h>
#include "core.h"
+#include "mmc_ops.h"
/* The debugfs functions are optimized away when CONFIG_DEBUG_FS isn't set. */
static int mmc_ios_show(struct seq_file *s, void *data)
{
debugfs_remove_recursive(host->debugfs_root);
}
+
+static int mmc_dbg_card_status_get(void *data, u64 *val)
+{
+ struct mmc_card *card = data;
+ u32 status;
+ int ret;
+
+ mmc_claim_host(card->host);
+
+ ret = mmc_send_status(data, &status);
+ if (!ret)
+ *val = status;
+
+ mmc_release_host(card->host);
+
+ return ret;
+}
+DEFINE_SIMPLE_ATTRIBUTE(mmc_dbg_card_status_fops, mmc_dbg_card_status_get,
+ NULL, "%08llx\n");
+
+#define EXT_CSD_STR_LEN 1025
+
+static int mmc_ext_csd_open(struct inode *inode, struct file *filp)
+{
+ struct mmc_card *card = inode->i_private;
+ char *buf;
+ ssize_t n = 0;
+ u8 *ext_csd;
+ int err, i;
+
+ buf = kmalloc(EXT_CSD_STR_LEN + 1, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ ext_csd = kmalloc(512, GFP_KERNEL);
+ if (!ext_csd) {
+ err = -ENOMEM;
+ goto out_free;
+ }
+
+ mmc_claim_host(card->host);
+ err = mmc_send_ext_csd(card, ext_csd);
+ mmc_release_host(card->host);
+ if (err)
+ goto out_free;
+
+ for (i = 511; i >= 0; i--)
+ n += sprintf(buf + n, "%02x", ext_csd[i]);
+ n += sprintf(buf + n, "\n");
+ BUG_ON(n != EXT_CSD_STR_LEN);
+
+ filp->private_data = buf;
+ kfree(ext_csd);
+ return 0;
+
+out_free:
+ kfree(buf);
+ kfree(ext_csd);
+ return err;
+}
+
+static ssize_t mmc_ext_csd_read(struct file *filp, char __user *ubuf,
+ size_t cnt, loff_t *ppos)
+{
+ char *buf = filp->private_data;
+
+ return simple_read_from_buffer(ubuf, cnt, ppos,
+ buf, EXT_CSD_STR_LEN);
+}
+
+static int mmc_ext_csd_release(struct inode *inode, struct file *file)
+{
+ kfree(file->private_data);
+ return 0;
+}
+
+static const struct file_operations mmc_dbg_ext_csd_fops = {
+ .open = mmc_ext_csd_open,
+ .read = mmc_ext_csd_read,
+ .release = mmc_ext_csd_release,
+};
+
+void mmc_add_card_debugfs(struct mmc_card *card)
+{
+ struct mmc_host *host = card->host;
+ struct dentry *root;
+
+ if (!host->debugfs_root)
+ return;
+
+ root = debugfs_create_dir(mmc_card_id(card), host->debugfs_root);
+ if (IS_ERR(root))
+ /* Don't complain -- debugfs just isn't enabled */
+ return;
+ if (!root)
+ /* Complain -- debugfs is enabled, but it failed to
+ * create the directory. */
+ goto err;
+
+ card->debugfs_root = root;
+
+ if (!debugfs_create_x32("state", S_IRUSR, root, &card->state))
+ goto err;
+
+ if (mmc_card_mmc(card) || mmc_card_sd(card))
+ if (!debugfs_create_file("status", S_IRUSR, root, card,
+ &mmc_dbg_card_status_fops))
+ goto err;
+
+ if (mmc_card_mmc(card))
+ if (!debugfs_create_file("ext_csd", S_IRUSR, root, card,
+ &mmc_dbg_ext_csd_fops))
+ goto err;
+
+ return;
+
+err:
+ debugfs_remove_recursive(root);
+ card->debugfs_root = NULL;
+ dev_err(&card->dev, "failed to initialize debugfs\n");
+}
+
+void mmc_remove_card_debugfs(struct mmc_card *card)
+{
+ debugfs_remove_recursive(card->debugfs_root);
+}