aboutsummaryrefslogtreecommitdiff
path: root/drivers/gpu/host1x/drm/gr2d.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpu/host1x/drm/gr2d.c')
-rw-r--r--drivers/gpu/host1x/drm/gr2d.c343
1 files changed, 0 insertions, 343 deletions
diff --git a/drivers/gpu/host1x/drm/gr2d.c b/drivers/gpu/host1x/drm/gr2d.c
deleted file mode 100644
index 27ffcf15a4b..00000000000
--- a/drivers/gpu/host1x/drm/gr2d.c
+++ /dev/null
@@ -1,343 +0,0 @@
-/*
- * drivers/video/tegra/host/gr2d/gr2d.c
- *
- * Tegra Graphics 2D
- *
- * 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 <http://www.gnu.org/licenses/>.
- */
-
-#include <linux/export.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
-#include <linux/clk.h>
-
-#include "channel.h"
-#include "drm.h"
-#include "gem.h"
-#include "job.h"
-#include "host1x.h"
-#include "host1x_bo.h"
-#include "host1x_client.h"
-#include "syncpt.h"
-
-struct gr2d {
- struct host1x_client client;
- struct clk *clk;
- struct host1x_channel *channel;
- unsigned long *addr_regs;
-};
-
-static inline struct gr2d *to_gr2d(struct host1x_client *client)
-{
- return container_of(client, struct gr2d, client);
-}
-
-static int gr2d_is_addr_reg(struct device *dev, u32 class, u32 reg);
-
-static int gr2d_client_init(struct host1x_client *client,
- struct drm_device *drm)
-{
- return 0;
-}
-
-static int gr2d_client_exit(struct host1x_client *client)
-{
- return 0;
-}
-
-static int gr2d_open_channel(struct host1x_client *client,
- struct host1x_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 host1x_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_submit(struct host1x_drm_context *context,
- struct drm_tegra_submit *args, struct drm_device *drm,
- struct drm_file *file)
-{
- struct host1x_job *job;
- 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;
- 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->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->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 struct host1x_client_ops gr2d_client_ops = {
- .drm_init = gr2d_client_init,
- .drm_exit = gr2d_client_exit,
- .open_channel = gr2d_open_channel,
- .close_channel = gr2d_close_channel,
- .submit = gr2d_submit,
-};
-
-static void gr2d_init_addr_reg_map(struct device *dev, struct gr2d *gr2d)
-{
- const u32 gr2d_addr_regs[] = {0x1a, 0x1b, 0x26, 0x2b, 0x2c, 0x2d, 0x31,
- 0x32, 0x48, 0x49, 0x4a, 0x4b, 0x4c};
- unsigned long *bitmap;
- int i;
-
- bitmap = devm_kzalloc(dev, DIV_ROUND_UP(256, BITS_PER_BYTE),
- GFP_KERNEL);
-
- for (i = 0; i < ARRAY_SIZE(gr2d_addr_regs); ++i) {
- u32 reg = gr2d_addr_regs[i];
- bitmap[BIT_WORD(reg)] |= BIT_MASK(reg);
- }
-
- gr2d->addr_regs = bitmap;
-}
-
-static int gr2d_is_addr_reg(struct device *dev, u32 class, u32 reg)
-{
- struct gr2d *gr2d = dev_get_drvdata(dev);
-
- switch (class) {
- case HOST1X_CLASS_HOST1X:
- return reg == 0x2b;
- case HOST1X_CLASS_GR2D:
- case HOST1X_CLASS_GR2D_SB:
- reg &= 0xff;
- if (gr2d->addr_regs[BIT_WORD(reg)] & BIT_MASK(reg))
- return 1;
- default:
- return 0;
- }
-}
-
-static const struct of_device_id gr2d_match[] = {
- { .compatible = "nvidia,tegra30-gr2d" },
- { .compatible = "nvidia,tegra20-gr2d" },
- { },
-};
-
-static int gr2d_probe(struct platform_device *pdev)
-{
- struct device *dev = &pdev->dev;
- struct host1x_drm *host1x = host1x_get_drm_data(dev->parent);
- int err;
- struct gr2d *gr2d = NULL;
- struct host1x_syncpt **syncpts;
-
- 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;
- }
-
- gr2d->client.ops = &gr2d_client_ops;
- gr2d->client.dev = dev;
- gr2d->client.class = HOST1X_CLASS_GR2D;
- gr2d->client.syncpts = syncpts;
- gr2d->client.num_syncpts = 1;
-
- err = host1x_register_client(host1x, &gr2d->client);
- if (err < 0) {
- dev_err(dev, "failed to register host1x client: %d\n", err);
- return err;
- }
-
- gr2d_init_addr_reg_map(dev, gr2d);
-
- platform_set_drvdata(pdev, gr2d);
-
- return 0;
-}
-
-static int __exit gr2d_remove(struct platform_device *pdev)
-{
- struct host1x_drm *host1x = host1x_get_drm_data(pdev->dev.parent);
- struct gr2d *gr2d = platform_get_drvdata(pdev);
- unsigned int i;
- int err;
-
- err = host1x_unregister_client(host1x, &gr2d->client);
- if (err < 0) {
- dev_err(&pdev->dev, "failed to unregister client: %d\n", err);
- return err;
- }
-
- for (i = 0; i < gr2d->client.num_syncpts; i++)
- host1x_syncpt_free(gr2d->client.syncpts[i]);
-
- host1x_channel_free(gr2d->channel);
- clk_disable_unprepare(gr2d->clk);
-
- return 0;
-}
-
-struct platform_driver tegra_gr2d_driver = {
- .probe = gr2d_probe,
- .remove = __exit_p(gr2d_remove),
- .driver = {
- .owner = THIS_MODULE,
- .name = "gr2d",
- .of_match_table = gr2d_match,
- }
-};
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 11:14:09 +0000