Add support for host1x debugging. Adds debugfs entries, and dumps channel state to UART in case of stuck job.
Signed-off-by: Terje Bergstrom tbergstrom@nvidia.com --- drivers/gpu/host1x/Makefile | 1 + drivers/gpu/host1x/cdma.c | 37 +++ drivers/gpu/host1x/debug.c | 207 ++++++++++++++ drivers/gpu/host1x/debug.h | 49 ++++ drivers/gpu/host1x/dev.c | 3 + drivers/gpu/host1x/dev.h | 17 ++ drivers/gpu/host1x/hw/cdma_hw.c | 3 + drivers/gpu/host1x/hw/debug_hw.c | 399 +++++++++++++++++++++++++++ drivers/gpu/host1x/hw/host1x01.c | 2 + drivers/gpu/host1x/hw/hw_host1x01_channel.h | 12 + drivers/gpu/host1x/hw/hw_host1x01_sync.h | 77 ++++++ drivers/gpu/host1x/hw/syncpt_hw.c | 1 + drivers/gpu/host1x/syncpt.c | 3 + 13 files changed, 811 insertions(+) create mode 100644 drivers/gpu/host1x/debug.c create mode 100644 drivers/gpu/host1x/debug.h create mode 100644 drivers/gpu/host1x/hw/debug_hw.c
diff --git a/drivers/gpu/host1x/Makefile b/drivers/gpu/host1x/Makefile index f6c1924..541f334 100644 --- a/drivers/gpu/host1x/Makefile +++ b/drivers/gpu/host1x/Makefile @@ -8,6 +8,7 @@ host1x-objs = \ intr.o \ channel.o \ job.o \ + debug.o \ memmgr.o
obj-$(CONFIG_TEGRA_HOST1X_CMA) += cma.o diff --git a/drivers/gpu/host1x/cdma.c b/drivers/gpu/host1x/cdma.c index 1193fea..b924f23 100644 --- a/drivers/gpu/host1x/cdma.c +++ b/drivers/gpu/host1x/cdma.c @@ -19,6 +19,7 @@ #include "cdma.h" #include "channel.h" #include "dev.h" +#include "debug.h" #include "memmgr.h" #include <asm/cacheflush.h>
@@ -369,12 +370,45 @@ int host1x_cdma_begin(struct host1x_cdma *cdma, struct host1x_job *job) return 0; }
+static void trace_write_gather(struct host1x_cdma *cdma, + struct mem_handle *ref, + u32 offset, u32 words) +{ + void *mem = NULL; + + if (host1x_debug_trace_cmdbuf) { + mem = host1x_memmgr_mmap(ref); + if (IS_ERR_OR_NULL(mem)) + mem = NULL; + }; + + if (mem) { + u32 i; + /* + * Write in batches of 128 as there seems to be a limit + * of how much you can output to ftrace at once. + */ + for (i = 0; i < words; i += TRACE_MAX_LENGTH) { + trace_host1x_cdma_push_gather( + cdma_to_channel(cdma)->dev->name, + (u32)ref, + min(words - i, TRACE_MAX_LENGTH), + offset + i * sizeof(u32), + mem); + } + host1x_memmgr_munmap(ref, mem); + } +} + /* * Push two words into a push buffer slot * Blocks as necessary if the push buffer is full. */ void host1x_cdma_push(struct host1x_cdma *cdma, u32 op1, u32 op2) { + if (host1x_debug_trace_cmdbuf) + trace_host1x_cdma_push(cdma_to_channel(cdma)->dev->name, + op1, op2); host1x_cdma_push_gather(cdma, NULL, 0, op1, op2); }
@@ -390,6 +424,9 @@ void host1x_cdma_push_gather(struct host1x_cdma *cdma, u32 slots_free = cdma->slots_free; struct push_buffer *pb = &cdma->push_buffer;
+ if (handle) + trace_write_gather(cdma, handle, offset, op1 & 0xffff); + if (slots_free == 0) { host1x->cdma_op.kick(cdma); slots_free = host1x_cdma_wait_locked(cdma, diff --git a/drivers/gpu/host1x/debug.c b/drivers/gpu/host1x/debug.c new file mode 100644 index 0000000..8bce9f1 --- /dev/null +++ b/drivers/gpu/host1x/debug.c @@ -0,0 +1,207 @@ +/* + * Copyright (C) 2010 Google, Inc. + * Author: Erik Gilling konkers@android.com + * + * Copyright (C) 2011-2012 NVIDIA Corporation + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/debugfs.h> +#include <linux/seq_file.h> +#include <linux/uaccess.h> + +#include <linux/io.h> + +#include "dev.h" +#include "debug.h" +#include "channel.h" + +pid_t host1x_debug_null_kickoff_pid; +unsigned int host1x_debug_trace_cmdbuf; + +pid_t host1x_debug_force_timeout_pid; +u32 host1x_debug_force_timeout_val; +u32 host1x_debug_force_timeout_channel; + +void host1x_debug_output(struct output *o, const char *fmt, ...) +{ + va_list args; + int len; + + va_start(args, fmt); + len = vsnprintf(o->buf, sizeof(o->buf), fmt, args); + va_end(args); + o->fn(o->ctx, o->buf, len); +} + +static int show_channels(struct host1x_channel *ch, void *data) +{ + struct host1x *m = host1x_get_host(ch->dev); + struct output *o = data; + + mutex_lock(&ch->reflock); + if (ch->refcount) { + mutex_lock(&ch->cdma.lock); + m->debug_op.show_channel_fifo(m, ch, o, ch->chid); + m->debug_op.show_channel_cdma(m, ch, o, ch->chid); + mutex_unlock(&ch->cdma.lock); + } + mutex_unlock(&ch->reflock); + + return 0; +} + +static void show_syncpts(struct host1x *m, struct output *o) +{ + int i; + host1x_debug_output(o, "---- syncpts ----\n"); + for (i = 0; i < host1x_syncpt_nb_pts(m); i++) { + u32 max = host1x_syncpt_read_max(m->syncpt + i); + u32 min = host1x_syncpt_load_min(m->syncpt + i); + if (!min && !max) + continue; + host1x_debug_output(o, "id %d (%s) min %d max %d\n", + i, m->syncpt[i].name, + min, max); + } + + for (i = 0; i < host1x_syncpt_nb_bases(m); i++) { + u32 base_val; + base_val = host1x_syncpt_read_wait_base(m->syncpt + i); + if (base_val) + host1x_debug_output(o, "waitbase id %d val %d\n", + i, base_val); + } + + host1x_debug_output(o, "\n"); +} + +static void show_all(struct host1x *m, struct output *o) +{ + m->debug_op.show_mlocks(m, o); + show_syncpts(m, o); + host1x_debug_output(o, "---- channels ----\n"); + host1x_channel_for_all(m, o, show_channels); +} + +#ifdef CONFIG_DEBUG_FS +static int show_channels_no_fifo(struct host1x_channel *ch, void *data) +{ + struct host1x *host1x = host1x_get_host(ch->dev); + struct output *o = data; + + mutex_lock(&ch->reflock); + if (ch->refcount) { + mutex_lock(&ch->cdma.lock); + host1x->debug_op.show_channel_cdma(host1x, ch, o, ch->chid); + mutex_unlock(&ch->cdma.lock); + } + mutex_unlock(&ch->reflock); + + return 0; +} + +static void show_all_no_fifo(struct host1x *host1x, struct output *o) +{ + host1x->debug_op.show_mlocks(host1x, o); + show_syncpts(host1x, o); + host1x_debug_output(o, "---- channels ----\n"); + host1x_channel_for_all(host1x, o, show_channels_no_fifo); +} + +static int host1x_debug_show_all(struct seq_file *s, void *unused) +{ + struct output o = { + .fn = write_to_seqfile, + .ctx = s + }; + show_all(s->private, &o); + return 0; +} + +static int host1x_debug_show(struct seq_file *s, void *unused) +{ + struct output o = { + .fn = write_to_seqfile, + .ctx = s + }; + show_all_no_fifo(s->private, &o); + return 0; +} + +static int host1x_debug_open_all(struct inode *inode, struct file *file) +{ + return single_open(file, host1x_debug_show_all, inode->i_private); +} + +static const struct file_operations host1x_debug_all_fops = { + .open = host1x_debug_open_all, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int host1x_debug_open(struct inode *inode, struct file *file) +{ + return single_open(file, host1x_debug_show, inode->i_private); +} + +static const struct file_operations host1x_debug_fops = { + .open = host1x_debug_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +void host1x_debug_init(struct host1x *host1x) +{ + struct dentry *de = debugfs_create_dir("tegra_host", NULL); + + if (!de) + return; + + /* Store the created entry */ + host1x->debugfs = de; + + debugfs_create_file("status", S_IRUGO, de, + host1x, &host1x_debug_fops); + debugfs_create_file("status_all", S_IRUGO, de, + host1x, &host1x_debug_all_fops); + + debugfs_create_u32("null_kickoff_pid", S_IRUGO|S_IWUSR, de, + &host1x_debug_null_kickoff_pid); + debugfs_create_u32("trace_cmdbuf", S_IRUGO|S_IWUSR, de, + &host1x_debug_trace_cmdbuf); + + if (host1x->debug_op.debug_init) + host1x->debug_op.debug_init(de); + + debugfs_create_u32("force_timeout_pid", S_IRUGO|S_IWUSR, de, + &host1x_debug_force_timeout_pid); + debugfs_create_u32("force_timeout_val", S_IRUGO|S_IWUSR, de, + &host1x_debug_force_timeout_val); + debugfs_create_u32("force_timeout_channel", S_IRUGO|S_IWUSR, de, + &host1x_debug_force_timeout_channel); +} +#else +void host1x_debug_init(struct host1x *host1x) +{ +} +#endif + +void host1x_debug_dump(struct host1x *host1x) +{ + struct output o = { + .fn = write_to_printk + }; + show_all(host1x, &o); +} diff --git a/drivers/gpu/host1x/debug.h b/drivers/gpu/host1x/debug.h new file mode 100644 index 0000000..c36b0d5 --- /dev/null +++ b/drivers/gpu/host1x/debug.h @@ -0,0 +1,49 @@ +/* + * Tegra host1x Debug + * + * Copyright (c) 2011-2012 NVIDIA Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see http://www.gnu.org/licenses/. + */ +#ifndef __NVHOST_DEBUG_H +#define __NVHOST_DEBUG_H + +#include <linux/debugfs.h> +#include <linux/seq_file.h> + +struct host1x; + +struct output { + void (*fn)(void *ctx, const char *str, size_t len); + void *ctx; + char buf[256]; +}; + +static inline void write_to_seqfile(void *ctx, const char *str, size_t len) +{ + seq_write((struct seq_file *)ctx, str, len); +} + +static inline void write_to_printk(void *ctx, const char *str, size_t len) +{ + pr_info("%s", str); +} + +void host1x_debug_output(struct output *o, const char *fmt, ...); + +extern unsigned int host1x_debug_trace_cmdbuf; + +void host1x_debug_init(struct host1x *master); +void host1x_debug_dump(struct host1x *master); + +#endif /*__NVHOST_DEBUG_H */ diff --git a/drivers/gpu/host1x/dev.c b/drivers/gpu/host1x/dev.c index 9209333..19e8b59 100644 --- a/drivers/gpu/host1x/dev.c +++ b/drivers/gpu/host1x/dev.c @@ -27,6 +27,7 @@ #include "dev.h" #include "intr.h" #include "channel.h" +#include "debug.h" #include "hw/host1x01.h"
#define CREATE_TRACE_POINTS @@ -199,6 +200,8 @@ static int host1x_probe(struct platform_device *dev)
host1x_intr_start(&host->intr, clk_get_rate(host->clk));
+ host1x_debug_init(host); + host1x = host;
dev_info(&dev->dev, "initialized\n"); diff --git a/drivers/gpu/host1x/dev.h b/drivers/gpu/host1x/dev.h index 093ac85..aa5182e 100644 --- a/drivers/gpu/host1x/dev.h +++ b/drivers/gpu/host1x/dev.h @@ -33,6 +33,7 @@ struct push_buffer; struct dentry; struct mem_handle; struct platform_device; +struct output;
struct host1x_channel_ops { const char *soc_name; @@ -72,6 +73,21 @@ struct host1x_pushbuffer_ops { u32 (*putptr)(struct push_buffer *); };
+struct host1x_debug_ops { + void (*debug_init)(struct dentry *de); + void (*show_channel_cdma)(struct host1x *, + struct host1x_channel *, + struct output *, + int chid); + void (*show_channel_fifo)(struct host1x *, + struct host1x_channel *, + struct output *, + int chid); + void (*show_mlocks)(struct host1x *m, + struct output *o); + +}; + struct host1x_syncpt_ops { void (*reset)(struct host1x_syncpt *); void (*reset_wait_base)(struct host1x_syncpt *); @@ -119,6 +135,7 @@ struct host1x { struct host1x_channel_ops channel_op; struct host1x_cdma_ops cdma_op; struct host1x_pushbuffer_ops cdma_pb_op; + struct host1x_debug_ops debug_op; struct host1x_syncpt_ops syncpt_op; struct host1x_intr_ops intr_op;
diff --git a/drivers/gpu/host1x/hw/cdma_hw.c b/drivers/gpu/host1x/hw/cdma_hw.c index 55adaa6..f09a215 100644 --- a/drivers/gpu/host1x/hw/cdma_hw.c +++ b/drivers/gpu/host1x/hw/cdma_hw.c @@ -22,6 +22,7 @@ #include "cdma.h" #include "channel.h" #include "dev.h" +#include "debug.h" #include "memmgr.h"
#include "cdma_hw.h" @@ -409,6 +410,8 @@ static void cdma_timeout_handler(struct work_struct *work) host1x = cdma_to_host1x(cdma); ch = cdma_to_channel(cdma);
+ host1x_debug_dump(cdma_to_host1x(cdma)); + mutex_lock(&cdma->lock);
if (!cdma->timeout.clientid) { diff --git a/drivers/gpu/host1x/hw/debug_hw.c b/drivers/gpu/host1x/hw/debug_hw.c new file mode 100644 index 0000000..f1a63b5 --- /dev/null +++ b/drivers/gpu/host1x/hw/debug_hw.c @@ -0,0 +1,399 @@ +/* + * Copyright (C) 2010 Google, Inc. + * Author: Erik Gilling konkers@android.com + * + * Copyright (C) 2011 NVIDIA Corporation + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/debugfs.h> +#include <linux/seq_file.h> +#include <linux/mm.h> +#include <linux/scatterlist.h> + +#include <linux/io.h> + +#include "dev.h" +#include "debug.h" +#include "cdma.h" +#include "channel.h" +#include "memmgr.h" + +#define NVHOST_DEBUG_MAX_PAGE_OFFSET 102400 + +enum { + NVHOST_DBG_STATE_CMD = 0, + NVHOST_DBG_STATE_DATA = 1, + NVHOST_DBG_STATE_GATHER = 2 +}; + +static int show_channel_command(struct output *o, u32 addr, u32 val, int *count) +{ + unsigned mask; + unsigned subop; + + switch (val >> 28) { + case 0x0: + mask = val & 0x3f; + if (mask) { + host1x_debug_output(o, + "SETCL(class=%03x, offset=%03x, mask=%02x, [", + val >> 6 & 0x3ff, val >> 16 & 0xfff, mask); + *count = hweight8(mask); + return NVHOST_DBG_STATE_DATA; + } else { + host1x_debug_output(o, "SETCL(class=%03x)\n", + val >> 6 & 0x3ff); + return NVHOST_DBG_STATE_CMD; + } + + case 0x1: + host1x_debug_output(o, "INCR(offset=%03x, [", + val >> 16 & 0xfff); + *count = val & 0xffff; + return NVHOST_DBG_STATE_DATA; + + case 0x2: + host1x_debug_output(o, "NONINCR(offset=%03x, [", + val >> 16 & 0xfff); + *count = val & 0xffff; + return NVHOST_DBG_STATE_DATA; + + case 0x3: + mask = val & 0xffff; + host1x_debug_output(o, "MASK(offset=%03x, mask=%03x, [", + val >> 16 & 0xfff, mask); + *count = hweight16(mask); + return NVHOST_DBG_STATE_DATA; + + case 0x4: + host1x_debug_output(o, "IMM(offset=%03x, data=%03x)\n", + val >> 16 & 0xfff, val & 0xffff); + return NVHOST_DBG_STATE_CMD; + + case 0x5: + host1x_debug_output(o, "RESTART(offset=%08x)\n", val << 4); + return NVHOST_DBG_STATE_CMD; + + case 0x6: + host1x_debug_output(o, + "GATHER(offset=%03x, insert=%d, type=%d, count=%04x, addr=[", + val >> 16 & 0xfff, val >> 15 & 0x1, val >> 14 & 0x1, + val & 0x3fff); + *count = val & 0x3fff; /* TODO: insert */ + return NVHOST_DBG_STATE_GATHER; + + case 0xe: + subop = val >> 24 & 0xf; + if (subop == 0) + host1x_debug_output(o, "ACQUIRE_MLOCK(index=%d)\n", + val & 0xff); + else if (subop == 1) + host1x_debug_output(o, "RELEASE_MLOCK(index=%d)\n", + val & 0xff); + else + host1x_debug_output(o, "EXTEND_UNKNOWN(%08x)\n", val); + return NVHOST_DBG_STATE_CMD; + + default: + return NVHOST_DBG_STATE_CMD; + } +} + +static void show_channel_gather(struct output *o, u32 addr, + phys_addr_t phys_addr, u32 words, struct host1x_cdma *cdma); + +static void show_channel_word(struct output *o, int *state, int *count, + u32 addr, u32 val, struct host1x_cdma *cdma) +{ + static int start_count, dont_print; + + switch (*state) { + case NVHOST_DBG_STATE_CMD: + if (addr) + host1x_debug_output(o, "%08x: %08x:", addr, val); + else + host1x_debug_output(o, "%08x:", val); + + *state = show_channel_command(o, addr, val, count); + dont_print = 0; + start_count = *count; + if (*state == NVHOST_DBG_STATE_DATA && *count == 0) { + *state = NVHOST_DBG_STATE_CMD; + host1x_debug_output(o, "])\n"); + } + break; + + case NVHOST_DBG_STATE_DATA: + (*count)--; + if (start_count - *count < 64) + host1x_debug_output(o, "%08x%s", + val, *count > 0 ? ", " : "])\n"); + else if (!dont_print && (*count > 0)) { + host1x_debug_output(o, "[truncated; %d more words]\n", + *count); + dont_print = 1; + } + if (*count == 0) + *state = NVHOST_DBG_STATE_CMD; + break; + + case NVHOST_DBG_STATE_GATHER: + *state = NVHOST_DBG_STATE_CMD; + host1x_debug_output(o, "%08x]):\n", val); + if (cdma) { + show_channel_gather(o, addr, val, + *count, cdma); + } + break; + } +} + +static void do_show_channel_gather(struct output *o, + phys_addr_t phys_addr, + u32 words, struct host1x_cdma *cdma, + phys_addr_t pin_addr, u32 *map_addr) +{ + /* Map dmaget cursor to corresponding mem handle */ + u32 offset; + int state, count, i; + + offset = phys_addr - pin_addr; + /* + * Sometimes we're given different hardware address to the same + * page - in these cases the offset will get an invalid number and + * we just have to bail out. + */ + if (offset > NVHOST_DEBUG_MAX_PAGE_OFFSET) { + host1x_debug_output(o, "[address mismatch]\n"); + } else { + /* GATHER buffer starts always with commands */ + state = NVHOST_DBG_STATE_CMD; + for (i = 0; i < words; i++) + show_channel_word(o, &state, &count, + phys_addr + i * 4, + *(map_addr + offset/4 + i), + cdma); + } +} + +static void show_channel_gather(struct output *o, u32 addr, + phys_addr_t phys_addr, + u32 words, struct host1x_cdma *cdma) +{ + /* Map dmaget cursor to corresponding mem handle */ + struct push_buffer *pb = &cdma->push_buffer; + u32 cur = addr - pb->phys; + struct mem_handle *mem = pb->handle[cur/8]; + u32 *map_addr, offset; + struct sg_table *sgt; + + if (!mem) { + host1x_debug_output(o, "[already deallocated]\n"); + return; + } + + map_addr = host1x_memmgr_mmap(mem); + if (!map_addr) { + host1x_debug_output(o, "[could not mmap]\n"); + return; + } + + /* Get base address from mem */ + sgt = host1x_memmgr_pin(mem); + if (IS_ERR(sgt)) { + host1x_debug_output(o, "[couldn't pin]\n"); + host1x_memmgr_munmap(mem, map_addr); + return; + } + + offset = phys_addr - sg_dma_address(sgt->sgl); + do_show_channel_gather(o, phys_addr, words, cdma, + sg_dma_address(sgt->sgl), map_addr); + host1x_memmgr_unpin(mem, sgt); + host1x_memmgr_munmap(mem, map_addr); +} + +static void show_channel_gathers(struct output *o, struct host1x_cdma *cdma) +{ + struct host1x_job *job; + + list_for_each_entry(job, &cdma->sync_queue, list) { + int i; + host1x_debug_output(o, "\n%p: JOB, syncpt_id=%d, syncpt_val=%d," + " first_get=%08x, timeout=%d" + " num_slots=%d, num_handles=%d\n", + job, + job->syncpt_id, + job->syncpt_end, + job->first_get, + job->timeout, + job->num_slots, + job->num_unpins); + + for (i = 0; i < job->num_gathers; i++) { + struct host1x_job_gather *g = &job->gathers[i]; + u32 *mapped = host1x_memmgr_mmap(g->ref); + if (!mapped) { + host1x_debug_output(o, "[could not mmap]\n"); + continue; + } + + host1x_debug_output(o, + " GATHER at %08x+%04x, %d words\n", + g->mem_base, g->offset, g->words); + + do_show_channel_gather(o, g->mem_base + g->offset, + g->words, cdma, g->mem_base, mapped); + host1x_memmgr_munmap(g->ref, mapped); + } + } +} + +static void host1x_debug_show_channel_cdma(struct host1x *m, + struct host1x_channel *ch, struct output *o, int chid) +{ + struct host1x_channel *channel = ch; + struct host1x_cdma *cdma = &channel->cdma; + u32 dmaput, dmaget, dmactrl; + u32 cbstat, cbread; + u32 val, base, baseval; + + dmaput = host1x_ch_readl(channel, host1x_channel_dmaput_r()); + dmaget = host1x_ch_readl(channel, host1x_channel_dmaget_r()); + dmactrl = host1x_ch_readl(channel, host1x_channel_dmactrl_r()); + cbread = host1x_sync_readl(m, host1x_sync_cbread0_r() + 4 * chid); + cbstat = host1x_sync_readl(m, host1x_sync_cbstat_0_r() + 4 * chid); + + host1x_debug_output(o, "%d-%s: ", chid, + channel->dev->name); + + if (host1x_channel_dmactrl_dmastop_v(dmactrl) + || !channel->cdma.push_buffer.mapped) { + host1x_debug_output(o, "inactive\n\n"); + return; + } + + switch (cbstat) { + case 0x00010008: + host1x_debug_output(o, "waiting on syncpt %d val %d\n", + cbread >> 24, cbread & 0xffffff); + break; + + case 0x00010009: + base = (cbread >> 16) & 0xff; + baseval = host1x_sync_readl(m, + host1x_sync_syncpt_base_0_r() + 4 * base); + val = cbread & 0xffff; + host1x_debug_output(o, "waiting on syncpt %d val %d " + "(base %d = %d; offset = %d)\n", + cbread >> 24, baseval + val, + base, baseval, val); + break; + + default: + host1x_debug_output(o, + "active class %02x, offset %04x, val %08x\n", + host1x_sync_cbstat_0_cbclass0_v(cbstat), + host1x_sync_cbstat_0_cboffset0_v(cbstat), + cbread); + break; + } + + host1x_debug_output(o, "DMAPUT %08x, DMAGET %08x, DMACTL %08x\n", + dmaput, dmaget, dmactrl); + host1x_debug_output(o, "CBREAD %08x, CBSTAT %08x\n", cbread, cbstat); + + show_channel_gathers(o, cdma); + host1x_debug_output(o, "\n"); +} + +static void host1x_debug_show_channel_fifo(struct host1x *m, + struct host1x_channel *ch, struct output *o, int chid) +{ + u32 val, rd_ptr, wr_ptr, start, end; + struct host1x_channel *channel = ch; + int state, count; + + host1x_debug_output(o, "%d: fifo:\n", chid); + + val = host1x_ch_readl(channel, host1x_channel_fifostat_r()); + host1x_debug_output(o, "FIFOSTAT %08x\n", val); + if (host1x_channel_fifostat_cfempty_v(val)) { + host1x_debug_output(o, "[empty]\n"); + return; + } + + host1x_sync_writel(m, 0x0, host1x_sync_cfpeek_ctrl_r()); + host1x_sync_writel(m, host1x_sync_cfpeek_ctrl_cfpeek_ena_f(1) + | host1x_sync_cfpeek_ctrl_cfpeek_channr_f(chid), + host1x_sync_cfpeek_ctrl_r()); + + val = host1x_sync_readl(m, host1x_sync_cfpeek_ptrs_r()); + rd_ptr = host1x_sync_cfpeek_ptrs_cf_rd_ptr_v(val); + wr_ptr = host1x_sync_cfpeek_ptrs_cf_wr_ptr_v(val); + + val = host1x_sync_readl(m, host1x_sync_cf0_setup_r() + 4 * chid); + start = host1x_sync_cf0_setup_cf0_base_v(val); + end = host1x_sync_cf0_setup_cf0_limit_v(val); + + state = NVHOST_DBG_STATE_CMD; + + do { + host1x_sync_writel(m, 0x0, host1x_sync_cfpeek_ctrl_r()); + host1x_sync_writel(m, host1x_sync_cfpeek_ctrl_cfpeek_ena_f(1) + | host1x_sync_cfpeek_ctrl_cfpeek_channr_f(chid) + | host1x_sync_cfpeek_ctrl_cfpeek_addr_f(rd_ptr), + host1x_sync_cfpeek_ctrl_r()); + val = host1x_sync_readl(m, host1x_sync_cfpeek_read_r()); + + show_channel_word(o, &state, &count, 0, val, NULL); + + if (rd_ptr == end) + rd_ptr = start; + else + rd_ptr++; + } while (rd_ptr != wr_ptr); + + if (state == NVHOST_DBG_STATE_DATA) + host1x_debug_output(o, ", ...])\n"); + host1x_debug_output(o, "\n"); + + host1x_sync_writel(m, 0x0, host1x_sync_cfpeek_ctrl_r()); +} + +static void host1x_debug_show_mlocks(struct host1x *m, struct output *o) +{ + int i; + + host1x_debug_output(o, "---- mlocks ----\n"); + for (i = 0; i < host1x_syncpt_nb_mlocks(m); i++) { + u32 owner = host1x_sync_readl(m, + host1x_sync_mlock_owner_0_r() + i); + if (host1x_sync_mlock_owner_0_mlock_ch_owns_0_v(owner)) + host1x_debug_output(o, "%d: locked by channel %d\n", + i, + host1x_sync_mlock_owner_0_mlock_owner_chid_0_f( + owner)); + else if (host1x_sync_mlock_owner_0_mlock_cpu_owns_0_v(owner)) + host1x_debug_output(o, "%d: locked by cpu\n", i); + else + host1x_debug_output(o, "%d: unlocked\n", i); + } + host1x_debug_output(o, "\n"); +} + +static const struct host1x_debug_ops host1x_debug_ops = { + .show_channel_cdma = host1x_debug_show_channel_cdma, + .show_channel_fifo = host1x_debug_show_channel_fifo, + .show_mlocks = host1x_debug_show_mlocks, +}; diff --git a/drivers/gpu/host1x/hw/host1x01.c b/drivers/gpu/host1x/hw/host1x01.c index 3f41619..7a26e96 100644 --- a/drivers/gpu/host1x/hw/host1x01.c +++ b/drivers/gpu/host1x/hw/host1x01.c @@ -29,6 +29,7 @@
#include "hw/channel_hw.c" #include "hw/cdma_hw.c" +#include "hw/debug_hw.c" #include "hw/syncpt_hw.c" #include "hw/intr_hw.c"
@@ -37,6 +38,7 @@ int host1x01_init(struct host1x *host) host->channel_op = host1x_channel_ops; host->cdma_op = host1x_cdma_ops; host->cdma_pb_op = host1x_pushbuffer_ops; + host->debug_op = host1x_debug_ops; host->syncpt_op = host1x_syncpt_ops; host->intr_op = host1x_intr_ops;
diff --git a/drivers/gpu/host1x/hw/hw_host1x01_channel.h b/drivers/gpu/host1x/hw/hw_host1x01_channel.h index 3a23d57..29f0ddc0 100644 --- a/drivers/gpu/host1x/hw/hw_host1x01_channel.h +++ b/drivers/gpu/host1x/hw/hw_host1x01_channel.h @@ -51,6 +51,14 @@ #ifndef __hw_host1x_channel_host1x_h__ #define __hw_host1x_channel_host1x_h__
+static inline u32 host1x_channel_fifostat_r(void) +{ + return 0x0; +} +static inline u32 host1x_channel_fifostat_cfempty_v(u32 r) +{ + return (r >> 10) & 0x1; +} static inline u32 host1x_channel_dmastart_r(void) { return 0x14; @@ -75,6 +83,10 @@ static inline u32 host1x_channel_dmactrl_dmastop_f(u32 v) { return (v & 0x1) << 0; } +static inline u32 host1x_channel_dmactrl_dmastop_v(u32 r) +{ + return (r >> 0) & 0x1; +} static inline u32 host1x_channel_dmactrl_dmagetrst_f(u32 v) { return (v & 0x1) << 1; diff --git a/drivers/gpu/host1x/hw/hw_host1x01_sync.h b/drivers/gpu/host1x/hw/hw_host1x01_sync.h index c9342da..c4f6533 100644 --- a/drivers/gpu/host1x/hw/hw_host1x01_sync.h +++ b/drivers/gpu/host1x/hw/hw_host1x01_sync.h @@ -63,6 +63,18 @@ static inline u32 host1x_sync_syncpt_thresh_int_enable_cpu0_r(void) { return 0x68; } +static inline u32 host1x_sync_cf0_setup_r(void) +{ + return 0x80; +} +static inline u32 host1x_sync_cf0_setup_cf0_base_v(u32 r) +{ + return (r >> 0) & 0x1ff; +} +static inline u32 host1x_sync_cf0_setup_cf0_limit_v(u32 r) +{ + return (r >> 16) & 0x1ff; +} static inline u32 host1x_sync_cmdproc_stop_r(void) { return 0xac; @@ -83,6 +95,22 @@ static inline u32 host1x_sync_ip_busy_timeout_r(void) { return 0x1bc; } +static inline u32 host1x_sync_mlock_owner_0_r(void) +{ + return 0x340; +} +static inline u32 host1x_sync_mlock_owner_0_mlock_owner_chid_0_f(u32 v) +{ + return (v & 0xf) << 8; +} +static inline u32 host1x_sync_mlock_owner_0_mlock_cpu_owns_0_v(u32 r) +{ + return (r >> 1) & 0x1; +} +static inline u32 host1x_sync_mlock_owner_0_mlock_ch_owns_0_v(u32 r) +{ + return (r >> 0) & 0x1; +} static inline u32 host1x_sync_syncpt_0_r(void) { return 0x400; @@ -99,4 +127,53 @@ static inline u32 host1x_sync_syncpt_cpu_incr_r(void) { return 0x700; } +static inline u32 host1x_sync_cbread0_r(void) +{ + return 0x720; +} +static inline u32 host1x_sync_cfpeek_ctrl_r(void) +{ + return 0x74c; +} +static inline u32 host1x_sync_cfpeek_ctrl_cfpeek_addr_f(u32 v) +{ + return (v & 0x1ff) << 0; +} +static inline u32 host1x_sync_cfpeek_ctrl_cfpeek_channr_f(u32 v) +{ + return (v & 0x7) << 16; +} +static inline u32 host1x_sync_cfpeek_ctrl_cfpeek_ena_f(u32 v) +{ + return (v & 0x1) << 31; +} +static inline u32 host1x_sync_cfpeek_read_r(void) +{ + return 0x750; +} +static inline u32 host1x_sync_cfpeek_ptrs_r(void) +{ + return 0x754; +} +static inline u32 host1x_sync_cfpeek_ptrs_cf_rd_ptr_v(u32 r) +{ + return (r >> 0) & 0x1ff; +} +static inline u32 host1x_sync_cfpeek_ptrs_cf_wr_ptr_v(u32 r) +{ + return (r >> 16) & 0x1ff; +} +static inline u32 host1x_sync_cbstat_0_r(void) +{ + return 0x758; +} +static inline u32 host1x_sync_cbstat_0_cboffset0_v(u32 r) +{ + return (r >> 0) & 0xffff; +} +static inline u32 host1x_sync_cbstat_0_cbclass0_v(u32 r) +{ + return (r >> 16) & 0x3ff; +} + #endif /* __hw_host1x_sync_h__ */ diff --git a/drivers/gpu/host1x/hw/syncpt_hw.c b/drivers/gpu/host1x/hw/syncpt_hw.c index a070473..09a21d2 100644 --- a/drivers/gpu/host1x/hw/syncpt_hw.c +++ b/drivers/gpu/host1x/hw/syncpt_hw.c @@ -90,6 +90,7 @@ static void syncpt_cpu_incr(struct host1x_syncpt *sp) dev_err(&dev->dev->dev, "Trying to increment syncpoint id %d beyond max\n", sp->id); + host1x_debug_dump(sp->dev); return; } host1x_sync_writel(dev, BIT_MASK(sp->id), diff --git a/drivers/gpu/host1x/syncpt.c b/drivers/gpu/host1x/syncpt.c index 5de67d2..e819092 100644 --- a/drivers/gpu/host1x/syncpt.c +++ b/drivers/gpu/host1x/syncpt.c @@ -23,6 +23,7 @@ #include "syncpt.h" #include "dev.h" #include "intr.h" +#include "debug.h" #include <trace/events/host1x.h>
#define MAX_SYNCPT_LENGTH 5 @@ -219,6 +220,8 @@ int host1x_syncpt_wait(struct host1x_syncpt *sp, current->comm, sp->id, sp->name, thresh, timeout); sp->dev->syncpt_op.debug(sp); + if (check_count == MAX_STUCK_CHECK_COUNT) + host1x_debug_dump(sp->dev); check_count++; } }