Add support for host1x debugging. Adds debugfs entries, and dumps channel state to UART in case of stuck job.
Signed-off-by: Arto Merilainen amerilainen@nvidia.com Signed-off-by: Terje Bergstrom tbergstrom@nvidia.com --- drivers/gpu/host1x/Makefile | 1 + drivers/gpu/host1x/cdma.c | 4 + drivers/gpu/host1x/debug.c | 210 +++++++++++++++++ drivers/gpu/host1x/debug.h | 51 +++++ drivers/gpu/host1x/dev.c | 3 + drivers/gpu/host1x/dev.h | 42 ++++ drivers/gpu/host1x/hw/cdma_hw.c | 2 + drivers/gpu/host1x/hw/channel_hw.c | 26 ++- drivers/gpu/host1x/hw/debug_hw.c | 322 +++++++++++++++++++++++++++ drivers/gpu/host1x/hw/host1x01.c | 2 + drivers/gpu/host1x/hw/hw_host1x01_channel.h | 18 ++ drivers/gpu/host1x/hw/hw_host1x01_sync.h | 115 ++++++++++ drivers/gpu/host1x/hw/hw_host1x01_uclass.h | 6 + drivers/gpu/host1x/hw/syncpt_hw.c | 1 + drivers/gpu/host1x/syncpt.c | 5 + 15 files changed, 807 insertions(+), 1 deletion(-) 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 06a995b..49fd580 100644 --- a/drivers/gpu/host1x/Makefile +++ b/drivers/gpu/host1x/Makefile @@ -7,6 +7,7 @@ host1x-y = \ cdma.o \ channel.o \ job.o \ + debug.o \ hw/host1x01.o
obj-$(CONFIG_TEGRA_HOST1X) += host1x.o diff --git a/drivers/gpu/host1x/cdma.c b/drivers/gpu/host1x/cdma.c index 33935de..de72172 100644 --- a/drivers/gpu/host1x/cdma.c +++ b/drivers/gpu/host1x/cdma.c @@ -439,6 +439,10 @@ void host1x_cdma_push(struct host1x_cdma *cdma, u32 op1, u32 op2) struct push_buffer *pb = &cdma->push_buffer; u32 slots_free = cdma->slots_free;
+ if (host1x_debug_trace_cmdbuf) + trace_host1x_cdma_push(dev_name(cdma_to_channel(cdma)->dev), + op1, op2); + if (slots_free == 0) { host1x_hw_cdma_flush(host1x, 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..cb8aff9 --- /dev/null +++ b/drivers/gpu/host1x/debug.c @@ -0,0 +1,210 @@ +/* + * Copyright (C) 2010 Google, Inc. + * Author: Erik Gilling konkers@android.com + * + * Copyright (C) 2011-2013 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" + +unsigned int host1x_debug_trace_cmdbuf; + +static pid_t host1x_debug_force_timeout_pid; +static u32 host1x_debug_force_timeout_val; +static 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, bool show_fifo) +{ + struct host1x *m = host1x_get_host(ch->dev); + struct output *o = data; + + mutex_lock(&ch->reflock); + if (ch->refcount) { + mutex_lock(&ch->cdma.lock); + if (show_fifo) + host1x_hw_show_channel_fifo(m, ch, o); + host1x_hw_show_channel_cdma(m, ch, o); + 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(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_load_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) +{ + struct host1x_channel *ch; + + host1x_hw_show_mlocks(m, o); + show_syncpts(m, o); + host1x_debug_output(o, "---- channels ----\n"); + + host1x_for_each_channel(m, ch) + show_channels(ch, o, true); +} + +#ifdef CONFIG_DEBUG_FS +static void show_all_no_fifo(struct host1x *host1x, struct output *o) +{ + struct host1x_channel *ch; + + host1x_hw_show_mlocks(host1x, o); + show_syncpts(host1x, o); + host1x_debug_output(o, "---- channels ----\n"); + + host1x_for_each_channel(host1x, ch) + show_channels(ch, o, false); +} + +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-host1x", 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("trace_cmdbuf", S_IRUGO|S_IWUSR, de, + &host1x_debug_trace_cmdbuf); + + host1x_hw_debug_init(host1x, 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); +} + +void host1x_debug_deinit(struct host1x *host1x) +{ + debugfs_remove_recursive(host1x->debugfs); +} +#else +void host1x_debug_init(struct host1x *host1x) +{ +} +void host1x_debug_deinit(struct host1x *host1x) +{ +} +#endif + +void host1x_debug_dump(struct host1x *host1x) +{ + struct output o = { + .fn = write_to_printk + }; + show_all(host1x, &o); +} + +void host1x_debug_dump_syncpts(struct host1x *host1x) +{ + struct output o = { + .fn = write_to_printk + }; + show_syncpts(host1x, &o); +} diff --git a/drivers/gpu/host1x/debug.h b/drivers/gpu/host1x/debug.h new file mode 100644 index 0000000..4595b2e --- /dev/null +++ b/drivers/gpu/host1x/debug.h @@ -0,0 +1,51 @@ +/* + * Tegra host1x Debug + * + * Copyright (c) 2011-2013 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 __HOST1X_DEBUG_H +#define __HOST1X_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 __printf(2, 3) host1x_debug_output(struct output *o, const char *fmt, ...); + +extern unsigned int host1x_debug_trace_cmdbuf; + +void host1x_debug_init(struct host1x *host1x); +void host1x_debug_deinit(struct host1x *host1x); +void host1x_debug_dump(struct host1x *host1x); +void host1x_debug_dump_syncpts(struct host1x *host1x); + +#endif diff --git a/drivers/gpu/host1x/dev.c b/drivers/gpu/host1x/dev.c index bedd37b..d7c6e3e 100644 --- a/drivers/gpu/host1x/dev.c +++ b/drivers/gpu/host1x/dev.c @@ -30,6 +30,7 @@ #include "dev.h" #include "intr.h" #include "channel.h" +#include "debug.h" #include "hw/host1x01.h"
void host1x_sync_writel(struct host1x *host1x, u32 v, u32 r) @@ -151,6 +152,8 @@ static int host1x_probe(struct platform_device *pdev) goto fail_deinit_syncpt; }
+ host1x_debug_init(host); + return 0;
fail_deinit_syncpt: diff --git a/drivers/gpu/host1x/dev.h b/drivers/gpu/host1x/dev.h index 8606322..4a56233 100644 --- a/drivers/gpu/host1x/dev.h +++ b/drivers/gpu/host1x/dev.h @@ -31,6 +31,8 @@ struct host1x_channel; struct host1x_cdma; struct host1x_job; struct push_buffer; +struct output; +struct dentry;
struct host1x_channel_ops { int (*init)(struct host1x_channel *channel, struct host1x *host, @@ -54,6 +56,18 @@ struct host1x_pushbuffer_ops { void (*init)(struct push_buffer *pb); };
+struct host1x_debug_ops { + void (*debug_init)(struct dentry *de); + void (*show_channel_cdma)(struct host1x *host, + struct host1x_channel *ch, + struct output *o); + void (*show_channel_fifo)(struct host1x *host, + struct host1x_channel *ch, + struct output *o); + void (*show_mlocks)(struct host1x *host, struct output *output); + +}; + struct host1x_syncpt_ops { void (*restore)(struct host1x_syncpt *syncpt); void (*restore_wait_base)(struct host1x_syncpt *syncpt); @@ -100,6 +114,7 @@ struct host1x { const struct host1x_channel_ops *channel_op; const struct host1x_cdma_ops *cdma_op; const struct host1x_pushbuffer_ops *cdma_pb_op; + const struct host1x_debug_ops *debug_op;
struct host1x_syncpt *nop_sp;
@@ -107,6 +122,8 @@ struct host1x { struct host1x_channel chlist; unsigned long allocated_channels; unsigned int num_allocated_channels; + + struct dentry *debugfs; };
static inline struct host1x *host1x_get_host(struct device *dev) @@ -265,4 +282,29 @@ static inline void host1x_hw_pushbuffer_init(struct host1x *host, host->cdma_pb_op->init(pb); }
+static inline void host1x_hw_debug_init(struct host1x *host, struct dentry *de) +{ + if (host->debug_op && host->debug_op->debug_init) + host->debug_op->debug_init(de); +} + +static inline void host1x_hw_show_channel_cdma(struct host1x *host, + struct host1x_channel *channel, + struct output *o) +{ + host->debug_op->show_channel_cdma(host, channel, o); +} + +static inline void host1x_hw_show_channel_fifo(struct host1x *host, + struct host1x_channel *channel, + struct output *o) +{ + host->debug_op->show_channel_fifo(host, channel, o); +} + +static inline void host1x_hw_show_mlocks(struct host1x *host, struct output *o) +{ + host->debug_op->show_mlocks(host, o); +} + #endif diff --git a/drivers/gpu/host1x/hw/cdma_hw.c b/drivers/gpu/host1x/hw/cdma_hw.c index 4eb22ef..590b69d 100644 --- a/drivers/gpu/host1x/hw/cdma_hw.c +++ b/drivers/gpu/host1x/hw/cdma_hw.c @@ -244,6 +244,8 @@ 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.client) { diff --git a/drivers/gpu/host1x/hw/channel_hw.c b/drivers/gpu/host1x/hw/channel_hw.c index bf85a8e..3dbde65 100644 --- a/drivers/gpu/host1x/hw/channel_hw.c +++ b/drivers/gpu/host1x/hw/channel_hw.c @@ -29,6 +29,30 @@ #define HOST1X_CHANNEL_SIZE 16384 #define TRACE_MAX_LENGTH 128U
+static void trace_write_gather(struct host1x_cdma *cdma, struct host1x_bo *bo, + u32 offset, u32 words) +{ + void *mem = NULL; + + if (host1x_debug_trace_cmdbuf) + mem = host1x_bo_mmap(bo); + + 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( + dev_name(cdma_to_channel(cdma)->dev), + (u32)bo, min(words - i, TRACE_MAX_LENGTH), + offset + i * sizeof(u32), mem); + } + host1x_bo_munmap(bo, mem); + } +} + static void submit_gathers(struct host1x_job *job) { struct host1x_cdma *cdma = &job->channel->cdma; @@ -38,6 +62,7 @@ static void submit_gathers(struct host1x_job *job) struct host1x_job_gather *g = &job->gathers[i]; u32 op1 = host1x_opcode_gather(g->words); u32 op2 = g->mem_base + g->offset; + trace_write_gather(cdma, g->mem_id, g->offset, op1 & 0xffff); host1x_cdma_push(cdma, op1, op2); } } @@ -51,7 +76,6 @@ static int channel_submit(struct host1x_job *job) u32 syncval; int err; struct host1x_waitlist *completed_waiter = NULL; - sp = host1x_get_host(job->channel->dev)->syncpt + job->syncpt_id; trace_host1x_channel_submit(dev_name(ch->dev), job->num_gathers, job->num_relocs, diff --git a/drivers/gpu/host1x/hw/debug_hw.c b/drivers/gpu/host1x/hw/debug_hw.c new file mode 100644 index 0000000..69594bf --- /dev/null +++ b/drivers/gpu/host1x/hw/debug_hw.c @@ -0,0 +1,322 @@ +/* + * Copyright (C) 2010 Google, Inc. + * Author: Erik Gilling konkers@android.com + * + * Copyright (C) 2011-2013 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 "host1x_bo.h" + +#define HOST1X_DEBUG_MAX_PAGE_OFFSET 102400 + +enum { + HOST1X_OPCODE_SETCLASS = 0x00, + HOST1X_OPCODE_INCR = 0x01, + HOST1X_OPCODE_NONINCR = 0x02, + HOST1X_OPCODE_MASK = 0x03, + HOST1X_OPCODE_IMM = 0x04, + HOST1X_OPCODE_RESTART = 0x05, + HOST1X_OPCODE_GATHER = 0x06, + HOST1X_OPCODE_EXTEND = 0x0e, +}; + +enum { + HOST1X_OPCODE_EXTEND_ACQUIRE_MLOCK = 0x00, + HOST1X_OPCODE_EXTEND_RELEASE_MLOCK = 0x01, +}; + +static unsigned int show_channel_command(struct output *o, u32 val) +{ + unsigned mask; + unsigned subop; + + switch (val >> 28) { + case HOST1X_OPCODE_SETCLASS: + mask = val & 0x3f; + if (mask) { + host1x_debug_output(o, "SETCL(class=%03x, offset=%03x, mask=%02x, [", + val >> 6 & 0x3ff, + val >> 16 & 0xfff, mask); + return hweight8(mask); + } else { + host1x_debug_output(o, "SETCL(class=%03x)\n", + val >> 6 & 0x3ff); + return 0; + } + + case HOST1X_OPCODE_INCR: + host1x_debug_output(o, "INCR(offset=%03x, [", + val >> 16 & 0xfff); + return val & 0xffff; + + case HOST1X_OPCODE_NONINCR: + host1x_debug_output(o, "NONINCR(offset=%03x, [", + val >> 16 & 0xfff); + return val & 0xffff; + + case HOST1X_OPCODE_MASK: + mask = val & 0xffff; + host1x_debug_output(o, "MASK(offset=%03x, mask=%03x, [", + val >> 16 & 0xfff, mask); + return hweight16(mask); + + case HOST1X_OPCODE_IMM: + host1x_debug_output(o, "IMM(offset=%03x, data=%03x)\n", + val >> 16 & 0xfff, val & 0xffff); + return 0; + + case HOST1X_OPCODE_RESTART: + host1x_debug_output(o, "RESTART(offset=%08x)\n", val << 4); + return 0; + + case HOST1X_OPCODE_GATHER: + 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); + return 1; + + case HOST1X_OPCODE_EXTEND: + subop = val >> 24 & 0xf; + if (subop == HOST1X_OPCODE_EXTEND_ACQUIRE_MLOCK) + host1x_debug_output(o, "ACQUIRE_MLOCK(index=%d)\n", + val & 0xff); + else if (subop == HOST1X_OPCODE_EXTEND_RELEASE_MLOCK) + host1x_debug_output(o, "RELEASE_MLOCK(index=%d)\n", + val & 0xff); + else + host1x_debug_output(o, "EXTEND_UNKNOWN(%08x)\n", val); + return 0; + + default: + return 0; + } +} + +static void show_gather(struct output *o, phys_addr_t phys_addr, + unsigned int words, struct host1x_cdma *cdma, + phys_addr_t pin_addr, u32 *map_addr) +{ + /* Map dmaget cursor to corresponding mem handle */ + u32 offset = phys_addr - pin_addr; + unsigned int data_count = 0, i; + + /* + * 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 > HOST1X_DEBUG_MAX_PAGE_OFFSET) { + host1x_debug_output(o, "[address mismatch]\n"); + return; + } + + for (i = 0; i < words; i++) { + u32 addr = phys_addr + i * 4; + u32 val = *(map_addr + offset / 4 + i); + + if (!data_count) { + host1x_debug_output(o, "%08x: %08x:", addr, val); + data_count = show_channel_command(o, val); + } else { + host1x_debug_output(o, "%08x%s", val, + data_count > 0 ? ", " : "])\n"); + data_count--; + } + } +} + +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; + + if (job->gather_copy_mapped) + mapped = (u32 *)job->gather_copy_mapped; + else + mapped = host1x_bo_mmap(g->mem_id); + + 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); + + show_gather(o, g->mem_base + g->offset, g->words, + cdma, g->mem_base, mapped); + + if (!job->gather_copy_mapped) + host1x_bo_munmap(g->mem_id, mapped); + } + } +} + +static void host1x_debug_show_channel_cdma(struct host1x *host, + struct host1x_channel *ch, + struct output *o) +{ + struct host1x_cdma *cdma = &ch->cdma; + u32 dmaput, dmaget, dmactrl; + u32 cbstat, cbread; + u32 val, base, baseval; + + dmaput = host1x_ch_readl(ch, HOST1X_CHANNEL_DMAPUT); + dmaget = host1x_ch_readl(ch, HOST1X_CHANNEL_DMAGET); + dmactrl = host1x_ch_readl(ch, HOST1X_CHANNEL_DMACTRL); + cbread = host1x_sync_readl(host, HOST1X_SYNC_CBREAD(ch->id)); + cbstat = host1x_sync_readl(host, HOST1X_SYNC_CBSTAT(ch->id)); + + host1x_debug_output(o, "%d-%s: ", ch->id, dev_name(ch->dev)); + + if (HOST1X_CHANNEL_DMACTRL_DMASTOP_V(dmactrl) || + !ch->cdma.push_buffer.mapped) { + host1x_debug_output(o, "inactive\n\n"); + return; + } + + if (HOST1X_SYNC_CBSTAT_CBCLASS_V(cbstat) == HOST1X_CLASS_HOST1X && + HOST1X_SYNC_CBSTAT_CBOFFSET_V(cbstat) == + HOST1X_UCLASS_WAIT_SYNCPT) + host1x_debug_output(o, "waiting on syncpt %d val %d\n", + cbread >> 24, cbread & 0xffffff); + else if (HOST1X_SYNC_CBSTAT_CBCLASS_V(cbstat) == + HOST1X_CLASS_HOST1X && + HOST1X_SYNC_CBSTAT_CBOFFSET_V(cbstat) == + HOST1X_UCLASS_WAIT_SYNCPT_BASE) { + + base = (cbread >> 16) & 0xff; + baseval = + host1x_sync_readl(host, HOST1X_SYNC_SYNCPT_BASE(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); + } else + host1x_debug_output(o, "active class %02x, offset %04x, val %08x\n", + HOST1X_SYNC_CBSTAT_CBCLASS_V(cbstat), + HOST1X_SYNC_CBSTAT_CBOFFSET_V(cbstat), + cbread); + + 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 *host, + struct host1x_channel *ch, + struct output *o) +{ + u32 val, rd_ptr, wr_ptr, start, end; + unsigned int data_count = 0; + + host1x_debug_output(o, "%d: fifo:\n", ch->id); + + val = host1x_ch_readl(ch, HOST1X_CHANNEL_FIFOSTAT); + 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(host, 0x0, HOST1X_SYNC_CFPEEK_CTRL); + host1x_sync_writel(host, HOST1X_SYNC_CFPEEK_CTRL_ENA_F(1) | + HOST1X_SYNC_CFPEEK_CTRL_CHANNR_F(ch->id), + HOST1X_SYNC_CFPEEK_CTRL); + + val = host1x_sync_readl(host, HOST1X_SYNC_CFPEEK_PTRS); + 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(host, HOST1X_SYNC_CF_SETUP(ch->id)); + start = HOST1X_SYNC_CF_SETUP_BASE_V(val); + end = HOST1X_SYNC_CF_SETUP_LIMIT_V(val); + + do { + host1x_sync_writel(host, 0x0, HOST1X_SYNC_CFPEEK_CTRL); + host1x_sync_writel(host, HOST1X_SYNC_CFPEEK_CTRL_ENA_F(1) | + HOST1X_SYNC_CFPEEK_CTRL_CHANNR_F(ch->id) | + HOST1X_SYNC_CFPEEK_CTRL_ADDR_F(rd_ptr), + HOST1X_SYNC_CFPEEK_CTRL); + val = host1x_sync_readl(host, HOST1X_SYNC_CFPEEK_READ); + + if (!data_count) { + host1x_debug_output(o, "%08x:", val); + data_count = show_channel_command(o, val); + } else { + host1x_debug_output(o, "%08x%s", val, + data_count > 0 ? ", " : "])\n"); + data_count--; + } + + if (rd_ptr == end) + rd_ptr = start; + else + rd_ptr++; + } while (rd_ptr != wr_ptr); + + if (data_count) + host1x_debug_output(o, ", ...])\n"); + host1x_debug_output(o, "\n"); + + host1x_sync_writel(host, 0x0, HOST1X_SYNC_CFPEEK_CTRL); +} + +static void host1x_debug_show_mlocks(struct host1x *host, struct output *o) +{ + int i; + + host1x_debug_output(o, "---- mlocks ----\n"); + for (i = 0; i < host1x_syncpt_nb_mlocks(host); i++) { + u32 owner = + host1x_sync_readl(host, HOST1X_SYNC_MLOCK_OWNER(i)); + if (HOST1X_SYNC_MLOCK_OWNER_CH_OWNS_V(owner)) + host1x_debug_output(o, "%d: locked by channel %d\n", + i, HOST1X_SYNC_MLOCK_OWNER_CHID_F(owner)); + else if (HOST1X_SYNC_MLOCK_OWNER_CPU_OWNS_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 013ff38..a14e91c 100644 --- a/drivers/gpu/host1x/hw/host1x01.c +++ b/drivers/gpu/host1x/hw/host1x01.c @@ -23,6 +23,7 @@ /* include code */ #include "hw/cdma_hw.c" #include "hw/channel_hw.c" +#include "hw/debug_hw.c" #include "hw/intr_hw.c" #include "hw/syncpt_hw.c"
@@ -35,6 +36,7 @@ int host1x01_init(struct host1x *host) host->cdma_pb_op = &host1x_pushbuffer_ops; host->syncpt_op = &host1x_syncpt_ops; host->intr_op = &host1x_intr_ops; + host->debug_op = &host1x_debug_ops;
return 0; } diff --git a/drivers/gpu/host1x/hw/hw_host1x01_channel.h b/drivers/gpu/host1x/hw/hw_host1x01_channel.h index 9ba1332..b4bc7ca 100644 --- a/drivers/gpu/host1x/hw/hw_host1x01_channel.h +++ b/drivers/gpu/host1x/hw/hw_host1x01_channel.h @@ -51,6 +51,18 @@ #ifndef __hw_host1x_channel_host1x_h__ #define __hw_host1x_channel_host1x_h__
+static inline u32 host1x_channel_fifostat_r(void) +{ + return 0x0; +} +#define HOST1X_CHANNEL_FIFOSTAT \ + host1x_channel_fifostat_r() +static inline u32 host1x_channel_fifostat_cfempty_v(u32 r) +{ + return (r >> 10) & 0x1; +} +#define HOST1X_CHANNEL_FIFOSTAT_CFEMPTY_V(r) \ + host1x_channel_fifostat_cfempty_v(r) static inline u32 host1x_channel_dmastart_r(void) { return 0x14; @@ -87,6 +99,12 @@ static inline u32 host1x_channel_dmactrl_dmastop(void) } #define HOST1X_CHANNEL_DMACTRL_DMASTOP \ host1x_channel_dmactrl_dmastop() +static inline u32 host1x_channel_dmactrl_dmastop_v(u32 r) +{ + return (r >> 0) & 0x1; +} +#define HOST1X_CHANNEL_DMACTRL_DMASTOP_V(r) \ + host1x_channel_dmactrl_dmastop_v(r) static inline u32 host1x_channel_dmactrl_dmagetrst(void) { return 1 << 1; diff --git a/drivers/gpu/host1x/hw/hw_host1x01_sync.h b/drivers/gpu/host1x/hw/hw_host1x01_sync.h index 8f2a246..ac704e5 100644 --- a/drivers/gpu/host1x/hw/hw_host1x01_sync.h +++ b/drivers/gpu/host1x/hw/hw_host1x01_sync.h @@ -77,6 +77,24 @@ static inline u32 host1x_sync_syncpt_thresh_int_enable_cpu0_r(unsigned int id) } #define HOST1X_SYNC_SYNCPT_THRESH_INT_ENABLE_CPU0(id) \ host1x_sync_syncpt_thresh_int_enable_cpu0_r(id) +static inline u32 host1x_sync_cf_setup_r(unsigned int channel) +{ + return 0x80 + channel * REGISTER_STRIDE; +} +#define HOST1X_SYNC_CF_SETUP(channel) \ + host1x_sync_cf_setup_r(channel) +static inline u32 host1x_sync_cf_setup_base_v(u32 r) +{ + return (r >> 0) & 0x1ff; +} +#define HOST1X_SYNC_CF_SETUP_BASE_V(r) \ + host1x_sync_cf_setup_base_v(r) +static inline u32 host1x_sync_cf_setup_limit_v(u32 r) +{ + return (r >> 16) & 0x1ff; +} +#define HOST1X_SYNC_CF_SETUP_LIMIT_V(r) \ + host1x_sync_cf_setup_limit_v(r) static inline u32 host1x_sync_cmdproc_stop_r(void) { return 0xac; @@ -107,6 +125,30 @@ static inline u32 host1x_sync_ip_busy_timeout_r(void) } #define HOST1X_SYNC_IP_BUSY_TIMEOUT \ host1x_sync_ip_busy_timeout_r() +static inline u32 host1x_sync_mlock_owner_r(unsigned int id) +{ + return 0x340 + id * REGISTER_STRIDE; +} +#define HOST1X_SYNC_MLOCK_OWNER(id) \ + host1x_sync_mlock_owner_r(id) +static inline u32 host1x_sync_mlock_owner_chid_f(u32 v) +{ + return (v & 0xf) << 8; +} +#define HOST1X_SYNC_MLOCK_OWNER_CHID_F(v) \ + host1x_sync_mlock_owner_chid_f(v) +static inline u32 host1x_sync_mlock_owner_cpu_owns_v(u32 r) +{ + return (r >> 1) & 0x1; +} +#define HOST1X_SYNC_MLOCK_OWNER_CPU_OWNS_V(r) \ + host1x_sync_mlock_owner_cpu_owns_v(r) +static inline u32 host1x_sync_mlock_owner_ch_owns_v(u32 r) +{ + return (r >> 0) & 0x1; +} +#define HOST1X_SYNC_MLOCK_OWNER_CH_OWNS_V(r) \ + host1x_sync_mlock_owner_ch_owns_v(r) static inline u32 host1x_sync_syncpt_int_thresh_r(unsigned int id) { return 0x500 + id * REGISTER_STRIDE; @@ -125,4 +167,77 @@ static inline u32 host1x_sync_syncpt_cpu_incr_r(unsigned int id) } #define HOST1X_SYNC_SYNCPT_CPU_INCR(id) \ host1x_sync_syncpt_cpu_incr_r(id) +static inline u32 host1x_sync_cbread_r(unsigned int channel) +{ + return 0x720 + channel * REGISTER_STRIDE; +} +#define HOST1X_SYNC_CBREAD(channel) \ + host1x_sync_cbread_r(channel) +static inline u32 host1x_sync_cfpeek_ctrl_r(void) +{ + return 0x74c; +} +#define HOST1X_SYNC_CFPEEK_CTRL \ + host1x_sync_cfpeek_ctrl_r() +static inline u32 host1x_sync_cfpeek_ctrl_addr_f(u32 v) +{ + return (v & 0x1ff) << 0; +} +#define HOST1X_SYNC_CFPEEK_CTRL_ADDR_F(v) \ + host1x_sync_cfpeek_ctrl_addr_f(v) +static inline u32 host1x_sync_cfpeek_ctrl_channr_f(u32 v) +{ + return (v & 0x7) << 16; +} +#define HOST1X_SYNC_CFPEEK_CTRL_CHANNR_F(v) \ + host1x_sync_cfpeek_ctrl_channr_f(v) +static inline u32 host1x_sync_cfpeek_ctrl_ena_f(u32 v) +{ + return (v & 0x1) << 31; +} +#define HOST1X_SYNC_CFPEEK_CTRL_ENA_F(v) \ + host1x_sync_cfpeek_ctrl_ena_f(v) +static inline u32 host1x_sync_cfpeek_read_r(void) +{ + return 0x750; +} +#define HOST1X_SYNC_CFPEEK_READ \ + host1x_sync_cfpeek_read_r() +static inline u32 host1x_sync_cfpeek_ptrs_r(void) +{ + return 0x754; +} +#define HOST1X_SYNC_CFPEEK_PTRS \ + host1x_sync_cfpeek_ptrs_r() +static inline u32 host1x_sync_cfpeek_ptrs_cf_rd_ptr_v(u32 r) +{ + return (r >> 0) & 0x1ff; +} +#define HOST1X_SYNC_CFPEEK_PTRS_CF_RD_PTR_V(r) \ + host1x_sync_cfpeek_ptrs_cf_rd_ptr_v(r) +static inline u32 host1x_sync_cfpeek_ptrs_cf_wr_ptr_v(u32 r) +{ + return (r >> 16) & 0x1ff; +} +#define HOST1X_SYNC_CFPEEK_PTRS_CF_WR_PTR_V(r) \ + host1x_sync_cfpeek_ptrs_cf_wr_ptr_v(r) +static inline u32 host1x_sync_cbstat_r(unsigned int channel) +{ + return 0x758 + channel * REGISTER_STRIDE; +} +#define HOST1X_SYNC_CBSTAT(channel) \ + host1x_sync_cbstat_r(channel) +static inline u32 host1x_sync_cbstat_cboffset_v(u32 r) +{ + return (r >> 0) & 0xffff; +} +#define HOST1X_SYNC_CBSTAT_CBOFFSET_V(r) \ + host1x_sync_cbstat_cboffset_v(r) +static inline u32 host1x_sync_cbstat_cbclass_v(u32 r) +{ + return (r >> 16) & 0x3ff; +} +#define HOST1X_SYNC_CBSTAT_CBCLASS_V(r) \ + host1x_sync_cbstat_cbclass_v(r) + #endif /* __hw_host1x01_sync_h__ */ diff --git a/drivers/gpu/host1x/hw/hw_host1x01_uclass.h b/drivers/gpu/host1x/hw/hw_host1x01_uclass.h index 7af6609..42f3ce1 100644 --- a/drivers/gpu/host1x/hw/hw_host1x01_uclass.h +++ b/drivers/gpu/host1x/hw/hw_host1x01_uclass.h @@ -87,6 +87,12 @@ static inline u32 host1x_uclass_wait_syncpt_thresh_f(u32 v) } #define HOST1X_UCLASS_WAIT_SYNCPT_THRESH_F(v) \ host1x_uclass_wait_syncpt_thresh_f(v) +static inline u32 host1x_uclass_wait_syncpt_base_r(void) +{ + return 0x9; +} +#define HOST1X_UCLASS_WAIT_SYNCPT_BASE \ + host1x_uclass_wait_syncpt_base_r() static inline u32 host1x_uclass_wait_syncpt_base_indx_f(u32 v) { return (v & 0xff) << 24; diff --git a/drivers/gpu/host1x/hw/syncpt_hw.c b/drivers/gpu/host1x/hw/syncpt_hw.c index 2c1f4af..6117499 100644 --- a/drivers/gpu/host1x/hw/syncpt_hw.c +++ b/drivers/gpu/host1x/hw/syncpt_hw.c @@ -86,6 +86,7 @@ static void syncpt_cpu_incr(struct host1x_syncpt *sp) host1x_syncpt_idle(sp)) { dev_err(host->dev, "Trying to increment syncpoint id %d beyond max\n", sp->id); + host1x_debug_dump(sp->host); return; } host1x_sync_writel(host, BIT_MASK(sp->id), diff --git a/drivers/gpu/host1x/syncpt.c b/drivers/gpu/host1x/syncpt.c index ac172dc..7390af8 100644 --- a/drivers/gpu/host1x/syncpt.c +++ b/drivers/gpu/host1x/syncpt.c @@ -25,6 +25,7 @@ #include "syncpt.h" #include "dev.h" #include "intr.h" +#include "debug.h"
#define SYNCPT_CHECK_PERIOD (2 * HZ) #define MAX_STUCK_CHECK_COUNT 15 @@ -231,6 +232,10 @@ int host1x_syncpt_wait(struct host1x_syncpt *sp, u32 thresh, long timeout, "%s: syncpoint id %d (%s) stuck waiting %d, timeout=%ld\n", current->comm, sp->id, sp->name, thresh, timeout); + + host1x_debug_dump_syncpts(sp->host); + if (check_count == MAX_STUCK_CHECK_COUNT) + host1x_debug_dump(sp->host); check_count++; } }