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Commit bdd8edb9 authored by Loic Pallardy's avatar Loic Pallardy Committed by Bjorn Andersson
Browse files

remoteproc: debug: add resource table dump feature 



This patch adds the capability to display the content of
the resource table associated to a remote processor firmware.

Signed-off-by: default avatarLoic Pallardy <loic.pallardy@st.com>
Signed-off-by: default avatarBjorn Andersson <bjorn.andersson@linaro.org>
parent 9f058fa2

drivers/remoteproc/remoteproc_debugfs.c

+99 −0
Original line number Diff line number Diff line
@@ -155,6 +155,103 @@ static const struct file_operations rproc_recovery_ops = { 
	.llseek = generic_file_llseek,

};



/* Expose resource table content via debugfs */

static int rproc_rsc_table_show(struct seq_file *seq, void *p)

{

	static const char * const types[] = {"carveout", "devmem", "trace", "vdev"};

	struct rproc *rproc = seq->private;

	struct resource_table *table = rproc->table_ptr;

	struct fw_rsc_carveout *c;

	struct fw_rsc_devmem *d;

	struct fw_rsc_trace *t;

	struct fw_rsc_vdev *v;

	int i, j;



	if (!table) {

		seq_puts(seq, "No resource table found\n");

		return 0;

	}



	for (i = 0; i < table->num; i++) {

		int offset = table->offset[i];

		struct fw_rsc_hdr *hdr = (void *)table + offset;

		void *rsc = (void *)hdr + sizeof(*hdr);



		switch (hdr->type) {

		case RSC_CARVEOUT:

			c = rsc;

			seq_printf(seq, "Entry %d is of type %s\n", i, types[hdr->type]);

			seq_printf(seq, "  Device Address 0x%x\n", c->da);

			seq_printf(seq, "  Physical Address 0x%x\n", c->pa);

			seq_printf(seq, "  Length 0x%x Bytes\n", c->len);

			seq_printf(seq, "  Flags 0x%x\n", c->flags);

			seq_printf(seq, "  Reserved (should be zero) [%d]\n", c->reserved);

			seq_printf(seq, "  Name %s\n\n", c->name);

			break;

		case RSC_DEVMEM:

			d = rsc;

			seq_printf(seq, "Entry %d is of type %s\n", i, types[hdr->type]);

			seq_printf(seq, "  Device Address 0x%x\n", d->da);

			seq_printf(seq, "  Physical Address 0x%x\n", d->pa);

			seq_printf(seq, "  Length 0x%x Bytes\n", d->len);

			seq_printf(seq, "  Flags 0x%x\n", d->flags);

			seq_printf(seq, "  Reserved (should be zero) [%d]\n", d->reserved);

			seq_printf(seq, "  Name %s\n\n", d->name);

			break;

		case RSC_TRACE:

			t = rsc;

			seq_printf(seq, "Entry %d is of type %s\n", i, types[hdr->type]);

			seq_printf(seq, "  Device Address 0x%x\n", t->da);

			seq_printf(seq, "  Length 0x%x Bytes\n", t->len);

			seq_printf(seq, "  Reserved (should be zero) [%d]\n", t->reserved);

			seq_printf(seq, "  Name %s\n\n", t->name);

			break;

		case RSC_VDEV:

			v = rsc;

			seq_printf(seq, "Entry %d is of type %s\n", i, types[hdr->type]);



			seq_printf(seq, "  ID %d\n", v->id);

			seq_printf(seq, "  Notify ID %d\n", v->notifyid);

			seq_printf(seq, "  Device features 0x%x\n", v->dfeatures);

			seq_printf(seq, "  Guest features 0x%x\n", v->gfeatures);

			seq_printf(seq, "  Config length 0x%x\n", v->config_len);

			seq_printf(seq, "  Status 0x%x\n", v->status);

			seq_printf(seq, "  Number of vrings %d\n", v->num_of_vrings);

			seq_printf(seq, "  Reserved (should be zero) [%d][%d]\n\n",

				   v->reserved[0], v->reserved[1]);



			for (j = 0; j < v->num_of_vrings; j++) {

				seq_printf(seq, "  Vring %d\n", j);

				seq_printf(seq, "    Device Address 0x%x\n", v->vring[j].da);

				seq_printf(seq, "    Alignment %d\n", v->vring[j].align);

				seq_printf(seq, "    Number of buffers %d\n", v->vring[j].num);

				seq_printf(seq, "    Notify ID %d\n", v->vring[j].notifyid);

				seq_printf(seq, "    Physical Address 0x%x\n\n",

					   v->vring[j].pa);

			}

			break;

		default:

			seq_printf(seq, "Unknown resource type found: %d [hdr: %p]\n",

				   hdr->type, hdr);

			break;

		}

	}



	return 0;

}



static int rproc_rsc_table_open(struct inode *inode, struct file *file)

{

	return single_open(file, rproc_rsc_table_show, inode->i_private);

}



static const struct file_operations rproc_rsc_table_ops = {

	.open		= rproc_rsc_table_open,

	.read		= seq_read,

	.llseek		= seq_lseek,

	.release	= single_release,

};



void rproc_remove_trace_file(struct dentry *tfile)

{

	debugfs_remove(tfile);
@@ -198,6 +295,8 @@ void rproc_create_debug_dir(struct rproc *rproc) 
			    rproc, &rproc_name_ops);

	debugfs_create_file("recovery", 0400, rproc->dbg_dir,

			    rproc, &rproc_recovery_ops);

	debugfs_create_file("resource_table", 0400, rproc->dbg_dir,

			    rproc, &rproc_rsc_table_ops);

}



void __init rproc_init_debugfs(void)