int radeon_doorbell_get(struct radeon_device *rdev, u32 *page);
void radeon_doorbell_free(struct radeon_device *rdev, u32 doorbell);
-void radeon_doorbell_get_kfd_info(struct radeon_device *rdev,
- phys_addr_t *aperture_base,
- size_t *aperture_size,
- size_t *start_offset);
/*
* IRQS.
__clear_bit(doorbell, rdev->doorbell.used);
}
-/**
- * radeon_doorbell_get_kfd_info - Report doorbell configuration required to
- * setup KFD
- *
- * @rdev: radeon_device pointer
- * @aperture_base: output returning doorbell aperture base physical address
- * @aperture_size: output returning doorbell aperture size in bytes
- * @start_offset: output returning # of doorbell bytes reserved for radeon.
- *
- * Radeon and the KFD share the doorbell aperture. Radeon sets it up,
- * takes doorbells required for its own rings and reports the setup to KFD.
- * Radeon reserved doorbells are at the start of the doorbell aperture.
- */
-void radeon_doorbell_get_kfd_info(struct radeon_device *rdev,
- phys_addr_t *aperture_base,
- size_t *aperture_size,
- size_t *start_offset)
-{
- /* The first num_doorbells are used by radeon.
- * KFD takes whatever's left in the aperture. */
- if (rdev->doorbell.size > rdev->doorbell.num_doorbells * sizeof(u32)) {
- *aperture_base = rdev->doorbell.base;
- *aperture_size = rdev->doorbell.size;
- *start_offset = rdev->doorbell.num_doorbells * sizeof(u32);
- } else {
- *aperture_base = 0;
- *aperture_size = 0;
- *start_offset = 0;
- }
-}
-
/*
* radeon_wb_*()
* Writeback is the the method by which the the GPU updates special pages