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Date: Mon, 6 Nov 2017 18:09:56 +0100 From: Loic Pallardy <loic.pallardy@...com> To: <bjorn.andersson@...aro.org>, <ohad@...ery.com> CC: <linux-remoteproc@...r.kernel.org>, <linux-kernel@...r.kernel.org>, <arnaud.pouliquen@...com>, <benjamin.gaignard@...aro.org>, Loic Pallardy <loic.pallardy@...com> Subject: [PATCH v2 2/2] remoteproc: debug: add carveouts list dump feature This patch offers the capability to dump memory carveouts associated to one remoteprocessor. Signed-off-by: Loic Pallardy <loic.pallardy@...com> --- V2 : - Fix 0-DAY reported issues on open function prototype drivers/remoteproc/remoteproc_debugfs.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/drivers/remoteproc/remoteproc_debugfs.c b/drivers/remoteproc/remoteproc_debugfs.c index dc5e259..a204883 100644 --- a/drivers/remoteproc/remoteproc_debugfs.c +++ b/drivers/remoteproc/remoteproc_debugfs.c @@ -252,6 +252,35 @@ static int rproc_rsc_table_open(struct inode *inode, struct file *file) .release = single_release, }; +/* Expose carveout content via debugfs */ +static int rproc_carveouts_show(struct seq_file *seq, void *p) +{ + struct rproc *rproc = seq->private; + struct rproc_mem_entry *carveout; + + list_for_each_entry(carveout, &rproc->carveouts, node) { + seq_puts(seq, "Carveout memory entry:\n"); + seq_printf(seq, "\tVirtual address: %p\n", carveout->va); + seq_printf(seq, "\tDMA address: %pad\n", &carveout->dma); + seq_printf(seq, "\tDevice address: 0x%x\n", carveout->da); + seq_printf(seq, "\tLength: 0x%x Bytes\n\n", carveout->len); + } + + return 0; +} + +static int rproc_carveouts_open(struct inode *inode, struct file *file) +{ + return single_open(file, rproc_carveouts_show, inode->i_private); +} + +static const struct file_operations rproc_carveouts_ops = { + .open = rproc_carveouts_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + void rproc_remove_trace_file(struct dentry *tfile) { debugfs_remove(tfile); @@ -297,6 +326,8 @@ void rproc_create_debug_dir(struct rproc *rproc) rproc, &rproc_recovery_ops); debugfs_create_file("resource_table", 0400, rproc->dbg_dir, rproc, &rproc_rsc_table_ops); + debugfs_create_file("carveout_memories", 0400, rproc->dbg_dir, + rproc, &rproc_carveouts_ops); } void __init rproc_init_debugfs(void) -- 1.9.1
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