/*
* Copyright (c) 2012-2013, 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 .
*/
#include
#include "host1x_client.h"
#include "drm.h"
#include "gem.h"
#define GR2D_NUM_REGS 0x4d
struct gr2d {
struct tegra_drm_client client;
struct host1x_channel *channel;
struct clk *clk;
DECLARE_BITMAP(addr_regs, GR2D_NUM_REGS);
};
static inline struct gr2d *to_gr2d(struct tegra_drm_client *client)
{
return container_of(client, struct gr2d, client);
}
static int gr2d_client_init(struct host1x_client *client)
{
return 0;
}
static int gr2d_client_exit(struct host1x_client *client)
{
return 0;
}
static const struct host1x_client_ops gr2d_client_ops = {
.init = gr2d_client_init,
.exit = gr2d_client_exit,
};
static int gr2d_open_channel(struct tegra_drm_client *client,
struct tegra_drm_context *context)
{
struct gr2d *gr2d = to_gr2d(client);
context->channel = host1x_channel_get(gr2d->channel);
if (!context->channel)
return -ENOMEM;
return 0;
}
static void gr2d_close_channel(struct tegra_drm_context *context)
{
host1x_channel_put(context->channel);
}
static struct host1x_bo *host1x_bo_lookup(struct drm_device *drm,
struct drm_file *file,
u32 handle)
{
struct drm_gem_object *gem;
struct tegra_bo *bo;
gem = drm_gem_object_lookup(drm, file, handle);
if (!gem)
return NULL;
mutex_lock(&drm->struct_mutex);
drm_gem_object_unreference(gem);
mutex_unlock(&drm->struct_mutex);
bo = to_tegra_bo(gem);
return &bo->base;
}
static int gr2d_is_addr_reg(struct device *dev, u32 class, u32 offset)
{
struct gr2d *gr2d = dev_get_drvdata(dev);
switch (class) {
case HOST1X_CLASS_HOST1X:
if (offset == 0x2b)
return 1;
break;
case HOST1X_CLASS_GR2D:
case HOST1X_CLASS_GR2D_SB:
if (offset >= GR2D_NUM_REGS)
break;
if (test_bit(offset, gr2d->addr_regs))
return 1;
break;
}
return 0;
}
static int gr2d_submit(struct tegra_drm_context *context,
struct drm_tegra_submit *args, struct drm_device *drm,
struct drm_file *file)
{
unsigned int num_cmdbufs = args->num_cmdbufs;
unsigned int num_relocs = args->num_relocs;
unsigned int num_waitchks = args->num_waitchks;
struct drm_tegra_cmdbuf __user *cmdbufs =
(void * __user)(uintptr_t)args->cmdbufs;
struct drm_tegra_reloc __user *relocs =
(void * __user)(uintptr_t)args->relocs;
struct drm_tegra_waitchk __user *waitchks =
(void * __user)(uintptr_t)args->waitchks;
struct drm_tegra_syncpt syncpt;
struct host1x_job *job;
int err;
/* We don't yet support other than one syncpt_incr struct per submit */
if (args->num_syncpts != 1)
return -EINVAL;
job = host1x_job_alloc(context->channel, args->num_cmdbufs,
args->num_relocs, args->num_waitchks);
if (!job)
return -ENOMEM;
job->num_relocs = args->num_relocs;
job->num_waitchk = args->num_waitchks;
job->client = (u32)args->context;
job->class = context->client->base.class;
job->serialize = true;
while (num_cmdbufs) {
struct drm_tegra_cmdbuf cmdbuf;
struct host1x_bo *bo;
err = copy_from_user(&cmdbuf, cmdbufs, sizeof(cmdbuf));
if (err)
goto fail;
bo = host1x_bo_lookup(drm, file, cmdbuf.handle);
if (!bo) {
err = -ENOENT;
goto fail;
}
host1x_job_add_gather(job, bo, cmdbuf.words, cmdbuf.offset);
num_cmdbufs--;
cmdbufs++;
}
err = copy_from_user(job->relocarray, relocs,
sizeof(*relocs) * num_relocs);
if (err)
goto fail;
while (num_relocs--) {
struct host1x_reloc *reloc = &job->relocarray[num_relocs];
struct host1x_bo *cmdbuf, *target;
cmdbuf = host1x_bo_lookup(drm, file, (u32)reloc->cmdbuf);
target = host1x_bo_lookup(drm, file, (u32)reloc->target);
reloc->cmdbuf = cmdbuf;
reloc->target = target;
if (!reloc->target || !reloc->cmdbuf) {
err = -ENOENT;
goto fail;
}
}
err = copy_from_user(job->waitchk, waitchks,
sizeof(*waitchks) * num_waitchks);
if (err)
goto fail;
err = copy_from_user(&syncpt, (void * __user)(uintptr_t)args->syncpts,
sizeof(syncpt));
if (err)
goto fail;
job->syncpt_id = syncpt.id;
job->syncpt_incrs = syncpt.incrs;
job->timeout = 10000;
job->is_addr_reg = gr2d_is_addr_reg;
if (args->timeout && args->timeout < 10000)
job->timeout = args->timeout;
err = host1x_job_pin(job, context->client->base.dev);
if (err)
goto fail;
err = host1x_job_submit(job);
if (err)
goto fail_submit;
args->fence = job->syncpt_end;
host1x_job_put(job);
return 0;
fail_submit:
host1x_job_unpin(job);
fail:
host1x_job_put(job);
return err;
}
static const struct tegra_drm_client_ops gr2d_ops = {
.open_channel = gr2d_open_channel,
.close_channel = gr2d_close_channel,
.submit = gr2d_submit,
};
static const struct of_device_id gr2d_match[] = {
{ .compatible = "nvidia,tegra30-gr2d" },
{ .compatible = "nvidia,tegra20-gr2d" },
{ },
};
static const u32 gr2d_addr_regs[] = {
0x1a, 0x1b, 0x26, 0x2b, 0x2c, 0x2d, 0x31, 0x32,
0x48, 0x49, 0x4a, 0x4b, 0x4c
};
static int gr2d_probe(struct platform_device *pdev)
{
struct tegra_drm *tegra = host1x_get_drm_data(pdev->dev.parent);
struct device *dev = &pdev->dev;
struct host1x_syncpt **syncpts;
struct gr2d *gr2d;
unsigned int i;
int err;
gr2d = devm_kzalloc(dev, sizeof(*gr2d), GFP_KERNEL);
if (!gr2d)
return -ENOMEM;
syncpts = devm_kzalloc(dev, sizeof(*syncpts), GFP_KERNEL);
if (!syncpts)
return -ENOMEM;
gr2d->clk = devm_clk_get(dev, NULL);
if (IS_ERR(gr2d->clk)) {
dev_err(dev, "cannot get clock\n");
return PTR_ERR(gr2d->clk);
}
err = clk_prepare_enable(gr2d->clk);
if (err) {
dev_err(dev, "cannot turn on clock\n");
return err;
}
gr2d->channel = host1x_channel_request(dev);
if (!gr2d->channel)
return -ENOMEM;
*syncpts = host1x_syncpt_request(dev, false);
if (!(*syncpts)) {
host1x_channel_free(gr2d->channel);
return -ENOMEM;
}
INIT_LIST_HEAD(&gr2d->client.base.list);
gr2d->client.base.ops = &gr2d_client_ops;
gr2d->client.base.dev = dev;
gr2d->client.base.class = HOST1X_CLASS_GR2D;
gr2d->client.base.syncpts = syncpts;
gr2d->client.base.num_syncpts = 1;
gr2d->client.ops = &gr2d_ops;
err = host1x_register_client(tegra, &gr2d->client.base);
if (err < 0) {
dev_err(dev, "failed to register host1x client: %d\n", err);
return err;
}
/* initialize address register map */
for (i = 0; i < ARRAY_SIZE(gr2d_addr_regs); i++)
set_bit(gr2d_addr_regs[i], gr2d->addr_regs);
platform_set_drvdata(pdev, gr2d);
return 0;
}
static int gr2d_remove(struct platform_device *pdev)
{
struct tegra_drm *tegra = host1x_get_drm_data(pdev->dev.parent);
struct gr2d *gr2d = platform_get_drvdata(pdev);
unsigned int i;
int err;
err = host1x_unregister_client(tegra, &gr2d->client.base);
if (err < 0) {
dev_err(&pdev->dev, "failed to unregister host1x client: %d\n",
err);
return err;
}
for (i = 0; i < gr2d->client.base.num_syncpts; i++)
host1x_syncpt_free(gr2d->client.base.syncpts[i]);
host1x_channel_free(gr2d->channel);
clk_disable_unprepare(gr2d->clk);
return 0;
}
struct platform_driver tegra_gr2d_driver = {
.driver = {
.name = "tegra-gr2d",
.of_match_table = gr2d_match,
},
.probe = gr2d_probe,
.remove = gr2d_remove,
};