On Wed, Sep 13, 2017 at 2:05 AM, Felix Kuehling <Felix.Kuehling at amd.com> wrote: > Signed-off-by: Felix Kuehling <Felix.Kuehling at amd.com> > --- > drivers/gpu/drm/radeon/radeon_kfd.c | 31 +++++++++++++++++++++++++++++++ > 1 file changed, 31 insertions(+) > > diff --git a/drivers/gpu/drm/radeon/radeon_kfd.c b/drivers/gpu/drm/radeon/radeon_kfd.c > index f6578c9..a2ac8ac 100644 > --- a/drivers/gpu/drm/radeon/radeon_kfd.c > +++ b/drivers/gpu/drm/radeon/radeon_kfd.c > @@ -58,6 +58,10 @@ static uint64_t get_vmem_size(struct kgd_dev *kgd); > static uint64_t get_gpu_clock_counter(struct kgd_dev *kgd); > > static uint32_t get_max_engine_clock_in_mhz(struct kgd_dev *kgd); > + > +static int alloc_pasid(unsigned int bits); > +static void free_pasid(unsigned int pasid); > + > static uint16_t get_fw_version(struct kgd_dev *kgd, enum kgd_engine_type type); > > /* > @@ -112,6 +116,8 @@ static const struct kfd2kgd_calls kfd2kgd = { > .get_vmem_size = get_vmem_size, > .get_gpu_clock_counter = get_gpu_clock_counter, > .get_max_engine_clock_in_mhz = get_max_engine_clock_in_mhz, > + .alloc_pasid = alloc_pasid, > + .free_pasid = free_pasid, > .program_sh_mem_settings = kgd_program_sh_mem_settings, > .set_pasid_vmid_mapping = kgd_set_pasid_vmid_mapping, > .init_pipeline = kgd_init_pipeline, > @@ -341,6 +347,31 @@ static uint32_t get_max_engine_clock_in_mhz(struct kgd_dev *kgd) > return rdev->pm.dpm.dyn_state.max_clock_voltage_on_ac.sclk / 100; > } > > +/* > + * PASID manager > + */ > +static DEFINE_IDA(pasid_ida); > + > +int alloc_pasid(unsigned int bits) > +{ > + int pasid = -EINVAL; > + > + for (bits = min(bits, 31U); bits > 0; bits--) { > + pasid = ida_simple_get(&pasid_ida, > + 1U << (bits - 1), 1U << bits, > + GFP_KERNEL); > + if (pasid != -ENOSPC) > + break; > + } > + > + return pasid; > +} > + > +void free_pasid(unsigned int pasid) > +{ > + ida_simple_remove(&pasid_ida, pasid); > +} > + > static inline struct radeon_device *get_radeon_device(struct kgd_dev *kgd) > { > return (struct radeon_device *)kgd; > -- > 2.7.4 > > _______________________________________________ > amd-gfx mailing list > amd-gfx at lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/amd-gfx This patch is: Reviewed-by: Oded Gabbay <oded.gabbay at gmail.com>