diff options
Diffstat (limited to 'drivers/gpu/arm/midgard/mali_kbase_jm.c')
-rwxr-xr-x | drivers/gpu/arm/midgard/mali_kbase_jm.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/drivers/gpu/arm/midgard/mali_kbase_jm.c b/drivers/gpu/arm/midgard/mali_kbase_jm.c new file mode 100755 index 000000000000..0c5c6a6f78cb --- /dev/null +++ b/drivers/gpu/arm/midgard/mali_kbase_jm.c @@ -0,0 +1,131 @@ +/* + * + * (C) COPYRIGHT 2014-2016 ARM Limited. All rights reserved. + * + * This program is free software and is provided to you under the terms of the + * GNU General Public License version 2 as published by the Free Software + * Foundation, and any use by you of this program is subject to the terms + * of such GNU licence. + * + * A copy of the licence is included with the program, and can also be obtained + * from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + * + */ + + + + +/* + * HW access job manager common APIs + */ + +#include <mali_kbase.h> +#include "mali_kbase_hwaccess_jm.h" +#include "mali_kbase_jm.h" + +/** + * kbase_jm_next_job() - Attempt to run the next @nr_jobs_to_submit jobs on slot + * @js on the active context. + * @kbdev: Device pointer + * @js: Job slot to run on + * @nr_jobs_to_submit: Number of jobs to attempt to submit + * + * Return: true if slot can still be submitted on, false if slot is now full. + */ +static bool kbase_jm_next_job(struct kbase_device *kbdev, int js, + int nr_jobs_to_submit) +{ + struct kbase_context *kctx; + int i; + + kctx = kbdev->hwaccess.active_kctx; + + if (!kctx) + return true; + + for (i = 0; i < nr_jobs_to_submit; i++) { + struct kbase_jd_atom *katom = kbase_js_pull(kctx, js); + + if (!katom) + return true; /* Context has no jobs on this slot */ + + kbase_backend_run_atom(kbdev, katom); + } + + return false; /* Slot ringbuffer should now be full */ +} + +u32 kbase_jm_kick(struct kbase_device *kbdev, u32 js_mask) +{ + u32 ret_mask = 0; + + lockdep_assert_held(&kbdev->hwaccess_lock); + + while (js_mask) { + int js = ffs(js_mask) - 1; + int nr_jobs_to_submit = kbase_backend_slot_free(kbdev, js); + + if (kbase_jm_next_job(kbdev, js, nr_jobs_to_submit)) + ret_mask |= (1 << js); + + js_mask &= ~(1 << js); + } + + return ret_mask; +} + +void kbase_jm_try_kick(struct kbase_device *kbdev, u32 js_mask) +{ + struct kbasep_js_device_data *js_devdata = &kbdev->js_data; + + lockdep_assert_held(&kbdev->hwaccess_lock); + + if (!down_trylock(&js_devdata->schedule_sem)) { + kbase_jm_kick(kbdev, js_mask); + up(&js_devdata->schedule_sem); + } +} + +void kbase_jm_try_kick_all(struct kbase_device *kbdev) +{ + struct kbasep_js_device_data *js_devdata = &kbdev->js_data; + + lockdep_assert_held(&kbdev->hwaccess_lock); + + if (!down_trylock(&js_devdata->schedule_sem)) { + kbase_jm_kick_all(kbdev); + up(&js_devdata->schedule_sem); + } +} + +void kbase_jm_idle_ctx(struct kbase_device *kbdev, struct kbase_context *kctx) +{ + lockdep_assert_held(&kbdev->hwaccess_lock); + + if (kbdev->hwaccess.active_kctx == kctx) + kbdev->hwaccess.active_kctx = NULL; +} + +struct kbase_jd_atom *kbase_jm_return_atom_to_js(struct kbase_device *kbdev, + struct kbase_jd_atom *katom) +{ + lockdep_assert_held(&kbdev->hwaccess_lock); + + if (katom->event_code != BASE_JD_EVENT_STOPPED && + katom->event_code != BASE_JD_EVENT_REMOVED_FROM_NEXT) { + return kbase_js_complete_atom(katom, NULL); + } else { + kbase_js_unpull(katom->kctx, katom); + return NULL; + } +} + +struct kbase_jd_atom *kbase_jm_complete(struct kbase_device *kbdev, + struct kbase_jd_atom *katom, ktime_t *end_timestamp) +{ + lockdep_assert_held(&kbdev->hwaccess_lock); + + return kbase_js_complete_atom(katom, end_timestamp); +} + |