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Diffstat (limited to 'packages/linux/linux-2.6.18/atmel-mci-debugfs.patch')
-rw-r--r--packages/linux/linux-2.6.18/atmel-mci-debugfs.patch278
1 files changed, 0 insertions, 278 deletions
diff --git a/packages/linux/linux-2.6.18/atmel-mci-debugfs.patch b/packages/linux/linux-2.6.18/atmel-mci-debugfs.patch
deleted file mode 100644
index 4570bd8e93..0000000000
--- a/packages/linux/linux-2.6.18/atmel-mci-debugfs.patch
+++ /dev/null
@@ -1,278 +0,0 @@
-From nobody Mon Sep 17 00:00:00 2001
-From: Haavard Skinnemoen <hskinnemoen@atmel.com>
-Date: Sun, 14 Jan 2007 19:07:06 +0100
-Subject: [ATMEL MCI] Add debugfs support
-
-Export some of the atmel-mci driver state through debugfs. More
-specifically:
- * The MCI hardware registers
- * The request currently being processed
- * Pending and processed event masks
-
-Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
----
- drivers/mmc/atmel-mci.c | 230 ++++++++++++++++++++++++++++++++++++++++++++++++
- 1 file changed, 230 insertions(+)
-
-Index: linux-2.6.18-avr32/drivers/mmc/atmel-mci.c
-===================================================================
---- linux-2.6.18-avr32.orig/drivers/mmc/atmel-mci.c 2007-01-15 15:35:45.000000000 +0100
-+++ linux-2.6.18-avr32/drivers/mmc/atmel-mci.c 2007-01-15 15:38:05.000000000 +0100
-@@ -79,6 +79,14 @@ struct atmel_mci {
- struct clk *mck;
- struct mmci_platform_data *board;
- struct platform_device *pdev;
-+
-+#ifdef CONFIG_DEBUG_FS
-+ struct dentry *debugfs_root;
-+ struct dentry *debugfs_regs;
-+ struct dentry *debugfs_req;
-+ struct dentry *debugfs_pending_events;
-+ struct dentry *debugfs_completed_events;
-+#endif
- };
-
- /* Those printks take an awful lot of time... */
-@@ -90,6 +98,224 @@ static unsigned int fmax = 1000000U;
- module_param(fmax, uint, 0444);
- MODULE_PARM_DESC(fmax, "Max frequency in Hz of the MMC bus clock");
-
-+#ifdef CONFIG_DEBUG_FS
-+#include <linux/debugfs.h>
-+
-+#define DBG_REQ_BUF_SIZE (4096 - sizeof(unsigned int))
-+
-+struct req_dbg_data {
-+ unsigned int nbytes;
-+ char str[DBG_REQ_BUF_SIZE];
-+};
-+
-+static int req_dbg_open(struct inode *inode, struct file *file)
-+{
-+ struct atmel_mci *host;
-+ struct mmc_request *mrq;
-+ struct mmc_command *cmd, *stop;
-+ struct mmc_data *data;
-+ struct req_dbg_data *priv;
-+ char *str;
-+ unsigned long n = 0;
-+
-+ priv = kzalloc(DBG_REQ_BUF_SIZE, GFP_KERNEL);
-+ if (!priv)
-+ return -ENOMEM;
-+ str = priv->str;
-+
-+ mutex_lock(&inode->i_mutex);
-+ host = inode->u.generic_ip;
-+
-+ spin_lock_irq(&host->mmc->lock);
-+ mrq = host->mrq;
-+ if (mrq) {
-+ cmd = mrq->cmd;
-+ data = mrq->data;
-+ stop = mrq->stop;
-+ n = snprintf(str, DBG_REQ_BUF_SIZE,
-+ "CMD%u(0x%x) %x %x %x %x %x (err %u)\n",
-+ cmd->opcode, cmd->arg, cmd->flags,
-+ cmd->resp[0], cmd->resp[1], cmd->resp[2],
-+ cmd->resp[3], cmd->error);
-+ if (n < DBG_REQ_BUF_SIZE && data)
-+ n += snprintf(str + n, DBG_REQ_BUF_SIZE - n,
-+ "DATA %u * %u (%u) %x (err %u)\n",
-+ data->blocks, data->blksz,
-+ data->bytes_xfered, data->flags,
-+ data->error);
-+ if (n < DBG_REQ_BUF_SIZE && stop)
-+ n += snprintf(str + n, DBG_REQ_BUF_SIZE - n,
-+ "CMD%u(0x%x) %x %x %x %x %x (err %u)\n",
-+ stop->opcode, stop->arg, stop->flags,
-+ stop->resp[0], stop->resp[1],
-+ stop->resp[2], stop->resp[3],
-+ stop->error);
-+ }
-+ spin_unlock_irq(&host->mmc->lock);
-+ mutex_unlock(&inode->i_mutex);
-+
-+ priv->nbytes = min(n, DBG_REQ_BUF_SIZE);
-+ file->private_data = priv;
-+
-+ return 0;
-+}
-+
-+static int req_dbg_read(struct file *file, char __user *buf,
-+ size_t nbytes, loff_t *ppos)
-+{
-+ struct req_dbg_data *priv = file->private_data;
-+
-+ return simple_read_from_buffer(buf, nbytes, ppos,
-+ priv->str, priv->nbytes);
-+}
-+
-+static int req_dbg_release(struct inode *inode, struct file *file)
-+{
-+ kfree(file->private_data);
-+ return 0;
-+}
-+
-+static const struct file_operations req_dbg_fops = {
-+ .owner = THIS_MODULE,
-+ .open = req_dbg_open,
-+ .llseek = no_llseek,
-+ .read = req_dbg_read,
-+ .release = req_dbg_release,
-+};
-+
-+static int regs_dbg_open(struct inode *inode, struct file *file)
-+{
-+ struct atmel_mci *host;
-+ unsigned int i;
-+ u32 *data;
-+ int ret = -ENOMEM;
-+
-+ mutex_lock(&inode->i_mutex);
-+ host = inode->u.generic_ip;
-+ data = kmalloc(inode->i_size, GFP_KERNEL);
-+ if (!data)
-+ goto out;
-+
-+ spin_lock_irq(&host->mmc->lock);
-+ for (i = 0; i < inode->i_size / 4; i++)
-+ data[i] = __raw_readl(host->regs + i * 4);
-+ spin_unlock_irq(&host->mmc->lock);
-+
-+ file->private_data = data;
-+ ret = 0;
-+
-+out:
-+ mutex_unlock(&inode->i_mutex);
-+
-+ return ret;
-+}
-+
-+static ssize_t regs_dbg_read(struct file *file, char __user *buf,
-+ size_t nbytes, loff_t *ppos)
-+{
-+ struct inode *inode = file->f_dentry->d_inode;
-+ int ret;
-+
-+ mutex_lock(&inode->i_mutex);
-+ ret = simple_read_from_buffer(buf, nbytes, ppos,
-+ file->private_data,
-+ file->f_dentry->d_inode->i_size);
-+ mutex_unlock(&inode->i_mutex);
-+
-+ return ret;
-+}
-+
-+static int regs_dbg_release(struct inode *inode, struct file *file)
-+{
-+ kfree(file->private_data);
-+ return 0;
-+}
-+
-+static const struct file_operations regs_dbg_fops = {
-+ .owner = THIS_MODULE,
-+ .open = regs_dbg_open,
-+ .llseek = generic_file_llseek,
-+ .read = regs_dbg_read,
-+ .release = regs_dbg_release,
-+};
-+
-+static void atmci_init_debugfs(struct atmel_mci *host)
-+{
-+ struct mmc_host *mmc;
-+ struct dentry *root, *regs;
-+ struct resource *res;
-+
-+ mmc = host->mmc;
-+ root = debugfs_create_dir(mmc_hostname(mmc), NULL);
-+ if (IS_ERR(root) || !root)
-+ goto err_root;
-+ host->debugfs_root = root;
-+
-+ regs = debugfs_create_file("regs", 0400, root, host, &regs_dbg_fops);
-+ if (!regs)
-+ goto err_regs;
-+
-+ res = platform_get_resource(host->pdev, IORESOURCE_MEM, 0);
-+ regs->d_inode->i_size = res->end - res->start + 1;
-+ host->debugfs_regs = regs;
-+
-+ host->debugfs_req = debugfs_create_file("req", 0400, root,
-+ host, &req_dbg_fops);
-+ if (!host->debugfs_req)
-+ goto err_req;
-+
-+ host->debugfs_pending_events
-+ = debugfs_create_u32("pending_events", 0400, root,
-+ (u32 *)&host->pending_events);
-+ if (!host->debugfs_pending_events)
-+ goto err_pending_events;
-+
-+ host->debugfs_completed_events
-+ = debugfs_create_u32("completed_events", 0400, root,
-+ (u32 *)&host->completed_events);
-+ if (!host->debugfs_completed_events)
-+ goto err_completed_events;
-+
-+ return;
-+
-+err_completed_events:
-+ debugfs_remove(host->debugfs_pending_events);
-+err_pending_events:
-+ debugfs_remove(host->debugfs_req);
-+err_req:
-+ debugfs_remove(host->debugfs_regs);
-+err_regs:
-+ debugfs_remove(host->debugfs_root);
-+err_root:
-+ host->debugfs_root = NULL;
-+ dev_err(&host->pdev->dev,
-+ "failed to initialize debugfs for %s\n",
-+ mmc_hostname(mmc));
-+}
-+
-+static void atmci_cleanup_debugfs(struct atmel_mci *host)
-+{
-+ if (host->debugfs_root) {
-+ debugfs_remove(host->debugfs_completed_events);
-+ debugfs_remove(host->debugfs_pending_events);
-+ debugfs_remove(host->debugfs_req);
-+ debugfs_remove(host->debugfs_regs);
-+ debugfs_remove(host->debugfs_root);
-+ host->debugfs_root = NULL;
-+ }
-+}
-+#else
-+static inline void atmci_init_debugfs(struct atmel_mci *host)
-+{
-+
-+}
-+
-+static inline void atmci_cleanup_debugfs(struct atmel_mci *host)
-+{
-+
-+}
-+#endif /* CONFIG_DEBUG_FS */
-+
- static inline unsigned int ns_to_clocks(struct atmel_mci *host,
- unsigned int ns)
- {
-@@ -709,6 +935,8 @@ static int __devinit atmci_probe(struct
- printk(KERN_INFO "%s: Atmel MCI controller at 0x%08lx irq %d\n",
- mmc_hostname(mmc), host->mapbase, irq);
-
-+ atmci_init_debugfs(host);
-+
- return 0;
-
- out_free_irq:
-@@ -734,6 +962,8 @@ static int __devexit atmci_remove(struct
- platform_set_drvdata(pdev, NULL);
-
- if (host) {
-+ atmci_cleanup_debugfs(host);
-+
- mmc_remove_host(host->mmc);
-
- mci_writel(host, IDR, ~0UL);
generated by cgit v1.2.3 (git 2.25.1) at 2025-08-15 21:14:32 +0000