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staging: drm/omap: add debugfs support
Right now just a tiler_map file to dump a 2d map of which areas in tiler/dmm have pinned buffers (or reservations). In the future more could be added. Signed-off-by: Rob Clark <rob@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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parent
af69592aa0
commit
6169a1488f
@ -5,6 +5,7 @@
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ccflags-y := -Iinclude/drm -Werror
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omapdrm-y := omap_drv.o \
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omap_debugfs.o \
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omap_crtc.o \
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omap_encoder.o \
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omap_connector.o \
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42
drivers/staging/omapdrm/omap_debugfs.c
Normal file
42
drivers/staging/omapdrm/omap_debugfs.c
Normal file
@ -0,0 +1,42 @@
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/*
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* drivers/staging/omapdrm/omap_debugfs.c
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*
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* Copyright (C) 2011 Texas Instruments
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* Author: Rob Clark <rob.clark@linaro.org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "omap_drv.h"
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#include "omap_dmm_tiler.h"
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#ifdef CONFIG_DEBUG_FS
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static struct drm_info_list omap_debugfs_list[] = {
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{"tiler_map", tiler_map_show, 0},
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};
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int omap_debugfs_init(struct drm_minor *minor)
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{
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return drm_debugfs_create_files(omap_debugfs_list,
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ARRAY_SIZE(omap_debugfs_list),
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minor->debugfs_root, minor);
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}
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void omap_debugfs_cleanup(struct drm_minor *minor)
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{
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drm_debugfs_remove_files(omap_debugfs_list,
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ARRAY_SIZE(omap_debugfs_list), minor);
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}
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#endif
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@ -679,3 +679,152 @@ fail:
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omap_dmm_remove();
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return ret;
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}
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/*
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* debugfs support
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*/
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#ifdef CONFIG_DEBUG_FS
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static const char *alphabet = "abcdefghijklmnopqrstuvwxyz"
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"ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
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static const char *special = ".,:;'\"`~!^-+";
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static void fill_map(char **map, int xdiv, int ydiv, struct tcm_area *a,
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char c, bool ovw)
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{
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int x, y;
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for (y = a->p0.y / ydiv; y <= a->p1.y / ydiv; y++)
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for (x = a->p0.x / xdiv; x <= a->p1.x / xdiv; x++)
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if (map[y][x] == ' ' || ovw)
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map[y][x] = c;
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}
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static void fill_map_pt(char **map, int xdiv, int ydiv, struct tcm_pt *p,
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char c)
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{
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map[p->y / ydiv][p->x / xdiv] = c;
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}
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static char read_map_pt(char **map, int xdiv, int ydiv, struct tcm_pt *p)
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{
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return map[p->y / ydiv][p->x / xdiv];
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}
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static int map_width(int xdiv, int x0, int x1)
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{
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return (x1 / xdiv) - (x0 / xdiv) + 1;
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}
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static void text_map(char **map, int xdiv, char *nice, int yd, int x0, int x1)
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{
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char *p = map[yd] + (x0 / xdiv);
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int w = (map_width(xdiv, x0, x1) - strlen(nice)) / 2;
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if (w >= 0) {
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p += w;
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while (*nice)
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*p++ = *nice++;
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}
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}
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static void map_1d_info(char **map, int xdiv, int ydiv, char *nice,
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struct tcm_area *a)
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{
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sprintf(nice, "%dK", tcm_sizeof(*a) * 4);
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if (a->p0.y + 1 < a->p1.y) {
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text_map(map, xdiv, nice, (a->p0.y + a->p1.y) / 2 / ydiv, 0,
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256 - 1);
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} else if (a->p0.y < a->p1.y) {
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if (strlen(nice) < map_width(xdiv, a->p0.x, 256 - 1))
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text_map(map, xdiv, nice, a->p0.y / ydiv,
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a->p0.x + xdiv, 256 - 1);
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else if (strlen(nice) < map_width(xdiv, 0, a->p1.x))
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text_map(map, xdiv, nice, a->p1.y / ydiv,
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0, a->p1.y - xdiv);
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} else if (strlen(nice) + 1 < map_width(xdiv, a->p0.x, a->p1.x)) {
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text_map(map, xdiv, nice, a->p0.y / ydiv, a->p0.x, a->p1.x);
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}
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}
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static void map_2d_info(char **map, int xdiv, int ydiv, char *nice,
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struct tcm_area *a)
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{
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sprintf(nice, "(%d*%d)", tcm_awidth(*a), tcm_aheight(*a));
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if (strlen(nice) + 1 < map_width(xdiv, a->p0.x, a->p1.x))
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text_map(map, xdiv, nice, (a->p0.y + a->p1.y) / 2 / ydiv,
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a->p0.x, a->p1.x);
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}
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int tiler_map_show(struct seq_file *s, void *arg)
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{
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int xdiv = 2, ydiv = 1;
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char **map = NULL, *global_map;
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struct tiler_block *block;
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struct tcm_area a, p;
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int i;
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const char *m2d = alphabet;
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const char *a2d = special;
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const char *m2dp = m2d, *a2dp = a2d;
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char nice[128];
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int h_adj = omap_dmm->lut_height / ydiv;
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int w_adj = omap_dmm->lut_width / xdiv;
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unsigned long flags;
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map = kzalloc(h_adj * sizeof(*map), GFP_KERNEL);
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global_map = kzalloc((w_adj + 1) * h_adj, GFP_KERNEL);
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if (!map || !global_map)
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goto error;
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memset(global_map, ' ', (w_adj + 1) * h_adj);
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for (i = 0; i < omap_dmm->lut_height; i++) {
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map[i] = global_map + i * (w_adj + 1);
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map[i][w_adj] = 0;
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}
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spin_lock_irqsave(&omap_dmm->list_lock, flags);
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list_for_each_entry(block, &omap_dmm->alloc_head, alloc_node) {
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if (block->fmt != TILFMT_PAGE) {
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fill_map(map, xdiv, ydiv, &block->area, *m2dp, true);
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if (!*++a2dp)
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a2dp = a2d;
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if (!*++m2dp)
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m2dp = m2d;
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map_2d_info(map, xdiv, ydiv, nice, &block->area);
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} else {
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bool start = read_map_pt(map, xdiv, ydiv,
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&block->area.p0)
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== ' ';
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bool end = read_map_pt(map, xdiv, ydiv, &block->area.p1)
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== ' ';
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tcm_for_each_slice(a, block->area, p)
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fill_map(map, xdiv, ydiv, &a, '=', true);
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fill_map_pt(map, xdiv, ydiv, &block->area.p0,
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start ? '<' : 'X');
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fill_map_pt(map, xdiv, ydiv, &block->area.p1,
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end ? '>' : 'X');
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map_1d_info(map, xdiv, ydiv, nice, &block->area);
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}
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}
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spin_unlock_irqrestore(&omap_dmm->list_lock, flags);
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if (s) {
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seq_printf(s, "BEGIN DMM TILER MAP\n");
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for (i = 0; i < 128; i++)
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seq_printf(s, "%03d:%s\n", i, map[i]);
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seq_printf(s, "END TILER MAP\n");
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} else {
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dev_dbg(omap_dmm->dev, "BEGIN DMM TILER MAP\n");
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for (i = 0; i < 128; i++)
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dev_dbg(omap_dmm->dev, "%03d:%s\n", i, map[i]);
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dev_dbg(omap_dmm->dev, "END TILER MAP\n");
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}
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error:
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kfree(map);
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kfree(global_map);
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return 0;
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}
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#endif
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@ -76,6 +76,10 @@ struct tiler_block {
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int omap_dmm_init(struct drm_device *dev);
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int omap_dmm_remove(void);
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#ifdef CONFIG_DEBUG_FS
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int tiler_map_show(struct seq_file *s, void *arg);
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#endif
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/* pin/unpin */
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int tiler_pin(struct tiler_block *block, struct page **pages,
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uint32_t npages, uint32_t roll, bool wait);
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@ -726,6 +726,10 @@ static struct drm_driver omap_drm_driver = {
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.irq_uninstall = dev_irq_uninstall,
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.irq_handler = dev_irq_handler,
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.reclaim_buffers = drm_core_reclaim_buffers,
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#ifdef CONFIG_DEBUG_FS
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.debugfs_init = omap_debugfs_init,
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.debugfs_cleanup = omap_debugfs_cleanup,
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#endif
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.gem_init_object = omap_gem_init_object,
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.gem_free_object = omap_gem_free_object,
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.gem_vm_ops = &omap_gem_vm_ops,
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@ -51,6 +51,11 @@ struct omap_drm_private {
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bool has_dmm;
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};
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#ifdef CONFIG_DEBUG_FS
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int omap_debugfs_init(struct drm_minor *minor);
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void omap_debugfs_cleanup(struct drm_minor *minor);
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#endif
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struct drm_fb_helper *omap_fbdev_init(struct drm_device *dev);
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void omap_fbdev_free(struct drm_device *dev);
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