1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0
9  * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
22  * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
28  * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
73 //* P R I V A T E   M E T H O D S
87    U32 blocks = (dsm_descriptor_count * sizeof(TRIM_PAIR))/sequence->device->logical_block_size;  in sati_unmap_calculate_dsm_blocks()
88    if ((dsm_descriptor_count * sizeof(TRIM_PAIR)) % sequence->device->logical_block_size)  in sati_unmap_calculate_dsm_blocks()
99  *        - setting the command register
100  *        - setting the device head register
101  *        - filling in fields in the SATI_TRANSLATOR_SEQUENCE object.
124    // the udma fast path.  in sati_unmap_construct()
128    sequence->data_direction                 = SATI_DATA_DIRECTION_OUT;  in sati_unmap_construct()
129    sequence->protocol                       = SAT_PROTOCOL_UDMA_DATA_OUT;  in sati_unmap_construct()
133    sequence->is_translate_response_required = TRUE;  in sati_unmap_construct()
156    unmap_process_state = &sequence->command_specific_data.unmap_process_state;  in sati_unmap_load_next_descriptor()
159    for(index = unmap_process_state->current_unmap_block_descriptor_index;  in sati_unmap_load_next_descriptor()
160        index < unmap_process_state->current_unmap_block_descriptor_index +  in sati_unmap_load_next_descriptor()
167          &unmap_block_descriptor[index-unmap_process_state->current_unmap_block_descriptor_index]);  in sati_unmap_load_next_descriptor()
171    unmap_process_state->current_lba_count = (unmap_block_descriptor[8] << 24) |  in sati_unmap_load_next_descriptor()
175    unmap_process_state->current_lba       = ((SATI_LBA)(unmap_block_descriptor[0]) << 56) |  in sati_unmap_load_next_descriptor()
183    unmap_process_state->next_lba          = 0;  in sati_unmap_load_next_descriptor()
186 …unmap_process_state->current_unmap_block_descriptor_index += SATI_UNMAP_SIZEOF_SCSI_UNMAP_BLOCK_DE…  in sati_unmap_load_next_descriptor()
209    return MIN(SATI_DSM_MAX_BUFFER_SIZE/sequence->device->logical_block_size,  in sati_unmap_get_max_buffer_size_in_blocks()
210               sequence->device->max_lba_range_entry_blocks);  in sati_unmap_get_max_buffer_size_in_blocks()
219  * @retval SATI_COMPLETE - The initial processing was completed successfully
220  * @retval SATI_FAILURE_CHECK_RESPONSE_DATA - Failed the initial processing
236    unmap_process_state = &sequence->command_specific_data.unmap_process_state;  in sati_unmap_initial_processing()
239    sequence->type = SATI_SEQUENCE_UNMAP;  in sati_unmap_initial_processing()
242    if ((sequence->device->capabilities & SATI_DEVICE_CAP_DSM_TRIM_SUPPORT)  in sati_unmap_initial_processing()
281    sequence->allocation_length = unmap_length;  in sati_unmap_initial_processing()
297    if ((U32)(unmap_length - SATI_UNMAP_SIZEOF_SCSI_UNMAP_PARAMETER_LIST) < descriptor_length)  in sati_unmap_initial_processing()
312    unmap_process_state->max_unmap_block_descriptors =  in sati_unmap_initial_processing()
320    unmap_process_state->max_lba_range_entries =  in sati_unmap_initial_processing()
321        (max_dsm_blocks*sequence->device->logical_block_size)/sizeof(TRIM_PAIR);  in sati_unmap_initial_processing()
326       max_dsm_blocks*sequence->device->logical_block_size,  in sati_unmap_initial_processing()
327       &(unmap_process_state->virtual_unmap_buffer),  in sati_unmap_initial_processing()
328       &(unmap_process_state->physical_unmap_buffer_low),  in sati_unmap_initial_processing()
329       &(unmap_process_state->physical_unmap_buffer_high));  in sati_unmap_initial_processing()
332    if (unmap_process_state->virtual_unmap_buffer == NULL)  in sati_unmap_initial_processing()
351                         &(unmap_process_state->unmap_buffer_sgl_pair));  in sati_unmap_initial_processing()
354    unmap_process_state->current_unmap_block_descriptor_index =  in sati_unmap_initial_processing()
360    sequence->state = SATI_SEQUENCE_STATE_INCOMPLETE;  in sati_unmap_initial_processing()
385    unmap_process_state = &sequence->command_specific_data.unmap_process_state;  in sati_unmap_process()
388    unmap_process_state->current_dsm_descriptor = unmap_process_state->virtual_unmap_buffer;  in sati_unmap_process()
392    while ((dsm_descriptor < unmap_process_state->max_lba_range_entries) &&  in sati_unmap_process()
393           (unmap_process_state->current_lba_count > 0)) {  in sati_unmap_process()
395       if (unmap_process_state->current_lba_count > SATI_DSM_MAX_SECTOR_COUNT) {  in sati_unmap_process()
400          unmap_process_state->current_lba_count -= SATI_DSM_MAX_SECTOR_COUNT;  in sati_unmap_process()
401          unmap_process_state->next_lba =  in sati_unmap_process()
402              unmap_process_state->current_lba + SATI_DSM_MAX_SECTOR_COUNT;  in sati_unmap_process()
405          dsm_descriptor_lba_count = unmap_process_state->current_lba_count;  in sati_unmap_process()
406          unmap_process_state->current_lba_count = 0;  in sati_unmap_process()
410       ((PTRIM_PAIR)(unmap_process_state->current_dsm_descriptor))->sector_address =  in sati_unmap_process()
411           unmap_process_state->current_lba;  in sati_unmap_process()
412       ((PTRIM_PAIR)(unmap_process_state->current_dsm_descriptor))->sector_count =  in sati_unmap_process()
416       if (unmap_process_state->current_lba_count == 0) {  in sati_unmap_process()
418          --unmap_process_state->max_unmap_block_descriptors;  in sati_unmap_process()
419          if (unmap_process_state->max_unmap_block_descriptors > 0) {  in sati_unmap_process()
425          unmap_process_state->current_lba = unmap_process_state->next_lba;  in sati_unmap_process()
429       ASSERT(unmap_process_state->current_lba <= SATI_DSM_MAX_SECTOR_ADDRESS);  in sati_unmap_process()
433       unmap_process_state->current_dsm_descriptor =  in sati_unmap_process()
434           (U8 *)(unmap_process_state->current_dsm_descriptor) + sizeof(TRIM_PAIR);  in sati_unmap_process()
439    dsm_bytes      = dsm_blocks * sequence->device->logical_block_size;  in sati_unmap_process()
445    dsm_remainder_bytes = sequence->device->logical_block_size;  in sati_unmap_process()
446    dsm_remainder_bytes -= (U32)((POINTER_UINT)unmap_process_state->current_dsm_descriptor &  in sati_unmap_process()
447                                 (sequence->device->logical_block_size-1));  in sati_unmap_process()
450    if (dsm_remainder_bytes != sequence->device->logical_block_size)  in sati_unmap_process()
453 …     dsm_remainder_bytes += (sequence->device->logical_block_size * (max_dsm_blocks - dsm_blocks));  in sati_unmap_process()
455        // According to ATA-8, if the DSM buffer is not completely filled with  in sati_unmap_process()
458        memset((U8 *)unmap_process_state->current_dsm_descriptor, 0, dsm_remainder_bytes);  in sati_unmap_process()
463    sati_cb_sge_write(unmap_process_state->unmap_buffer_sgl_pair,  in sati_unmap_process()
464                      unmap_process_state->physical_unmap_buffer_low,  in sati_unmap_process()
465                      unmap_process_state->physical_unmap_buffer_high,  in sati_unmap_process()
476    if (unmap_process_state->current_lba_count == 0)  in sati_unmap_process()
479        sequence->state = SATI_SEQUENCE_STATE_FINAL;  in sati_unmap_process()
486 //* P U B L I C   M E T H O D S
503    unmap_process_state = &sequence->command_specific_data.unmap_process_state;  in sati_unmap_terminate()
505    if (unmap_process_state->virtual_unmap_buffer != NULL)  in sati_unmap_terminate()
507       sati_cb_free_dma_buffer(scsi_io, unmap_process_state->virtual_unmap_buffer);  in sati_unmap_terminate()
508       unmap_process_state->virtual_unmap_buffer = NULL;  in sati_unmap_terminate()
537    unmap_process_state = &sequence->command_specific_data.unmap_process_state;  in sati_unmap_translate_command()
540    if ( sequence->state == SATI_SEQUENCE_STATE_INITIAL )  in sati_unmap_translate_command()
577    unmap_process_state = &sequence->command_specific_data.unmap_process_state;  in sati_unmap_translate_response()
581       sequence->state = SATI_SEQUENCE_STATE_FINAL;  in sati_unmap_translate_response()
595       if (sequence->state != SATI_SEQUENCE_STATE_INCOMPLETE)  in sati_unmap_translate_response()