diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c index 0c3bc00978f7..89ba4c670ec5 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c @@ -355,6 +355,43 @@ static int pm_create_runlist_ib(struct packet_manager *pm, return retval; } +/* pm_create_release_mem - Create a RELEASE_MEM packet and return the size + * of this packet + * @gpu_addr - GPU address of the packet. It's a virtual address. + * @buffer - buffer to fill up with the packet. It's a CPU kernel pointer + * Return - length of the packet + */ +uint32_t pm_create_release_mem(uint64_t gpu_addr, uint32_t *buffer) +{ + struct pm4_mec_release_mem *packet; + + WARN_ON(!buffer); + + packet = (struct pm4_mec_release_mem *)buffer; + memset(buffer, 0, sizeof(*packet)); + + packet->header.u32All = build_pm4_header(IT_RELEASE_MEM, + sizeof(*packet)); + + packet->bitfields2.event_type = CACHE_FLUSH_AND_INV_TS_EVENT; + packet->bitfields2.event_index = event_index___release_mem__end_of_pipe; + packet->bitfields2.tcl1_action_ena = 1; + packet->bitfields2.tc_action_ena = 1; + packet->bitfields2.cache_policy = cache_policy___release_mem__lru; + packet->bitfields2.atc = 0; + + packet->bitfields3.data_sel = data_sel___release_mem__send_32_bit_low; + packet->bitfields3.int_sel = + int_sel___release_mem__send_interrupt_after_write_confirm; + + packet->bitfields4.address_lo_32b = (gpu_addr & 0xffffffff) >> 2; + packet->address_hi = upper_32_bits(gpu_addr); + + packet->data_lo = 0; + + return sizeof(*packet) / sizeof(unsigned int); +} + int pm_init(struct packet_manager *pm, struct device_queue_manager *dqm) { pm->dqm = dqm; |