diff options
Diffstat (limited to 'drivers/gpu/host1x/drm/gr2d.c')
| -rw-r--r-- | drivers/gpu/host1x/drm/gr2d.c | 343 |
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 27ffcf15a4b4..000000000000 --- 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, - } -}; |