cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

oxfw-proc.c (2493B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 * oxfw_proc.c - a part of driver for OXFW970/971 based devices
      4 *
      5 * Copyright (c) 2014 Takashi Sakamoto
      6 */
      7
      8#include "./oxfw.h"
      9
     10static void proc_read_formation(struct snd_info_entry *entry,
     11				struct snd_info_buffer *buffer)
     12{
     13	struct snd_oxfw *oxfw = entry->private_data;
     14	struct snd_oxfw_stream_formation formation, curr;
     15	u8 *format;
     16	char flag;
     17	int i, err;
     18
     19	/* Show input. */
     20	err = snd_oxfw_stream_get_current_formation(oxfw,
     21						    AVC_GENERAL_PLUG_DIR_IN,
     22						    &curr);
     23	if (err < 0)
     24		return;
     25
     26	snd_iprintf(buffer, "Input Stream to device:\n");
     27	snd_iprintf(buffer, "\tRate\tPCM\tMIDI\n");
     28	for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
     29		format = oxfw->rx_stream_formats[i];
     30		if (format == NULL)
     31			continue;
     32
     33		err = snd_oxfw_stream_parse_format(format, &formation);
     34		if (err < 0)
     35			continue;
     36
     37		if (memcmp(&formation, &curr, sizeof(curr)) == 0)
     38			flag = '*';
     39		else
     40			flag = ' ';
     41
     42		snd_iprintf(buffer, "%c\t%d\t%d\t%d\n", flag,
     43			    formation.rate, formation.pcm, formation.midi);
     44	}
     45
     46	if (!oxfw->has_output)
     47		return;
     48
     49	/* Show output. */
     50	err = snd_oxfw_stream_get_current_formation(oxfw,
     51						    AVC_GENERAL_PLUG_DIR_OUT,
     52						    &curr);
     53	if (err < 0)
     54		return;
     55
     56	snd_iprintf(buffer, "Output Stream from device:\n");
     57	snd_iprintf(buffer, "\tRate\tPCM\tMIDI\n");
     58	for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
     59		format = oxfw->tx_stream_formats[i];
     60		if (format == NULL)
     61			continue;
     62
     63		err = snd_oxfw_stream_parse_format(format, &formation);
     64		if (err < 0)
     65			continue;
     66
     67		if (memcmp(&formation, &curr, sizeof(curr)) == 0)
     68			flag = '*';
     69		else
     70			flag = ' ';
     71
     72		snd_iprintf(buffer, "%c\t%d\t%d\t%d\n", flag,
     73			    formation.rate, formation.pcm, formation.midi);
     74	}
     75}
     76
     77static void add_node(struct snd_oxfw *oxfw, struct snd_info_entry *root,
     78		     const char *name,
     79		     void (*op)(struct snd_info_entry *e,
     80				struct snd_info_buffer *b))
     81{
     82	struct snd_info_entry *entry;
     83
     84	entry = snd_info_create_card_entry(oxfw->card, name, root);
     85	if (entry)
     86		snd_info_set_text_ops(entry, oxfw, op);
     87}
     88
     89void snd_oxfw_proc_init(struct snd_oxfw *oxfw)
     90{
     91	struct snd_info_entry *root;
     92
     93	/*
     94	 * All nodes are automatically removed at snd_card_disconnect(),
     95	 * by following to link list.
     96	 */
     97	root = snd_info_create_card_entry(oxfw->card, "firewire",
     98					  oxfw->card->proc_root);
     99	if (root == NULL)
    100		return;
    101	root->mode = S_IFDIR | 0555;
    102
    103	add_node(oxfw, root, "formation", proc_read_formation);
    104}