| /* Copyright (c) 2013, The Linux Foundation. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials provided |
| * with the distribution. |
| * * Neither the name of The Linux Foundation nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
| * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include <debug.h> |
| #include <string.h> |
| #include <reg.h> |
| #include <arch/defines.h> |
| #include <sys/types.h> |
| #include <stdlib.h> |
| #include <endian.h> |
| #include <ufs.h> |
| #include <dme.h> |
| #include <uic.h> |
| #include <utp.h> |
| |
| int dme_send_linkstartup_req(struct ufs_dev *dev) |
| { |
| struct uic_cmd cmd; |
| |
| cmd.uiccmd = UICCMDR_DME_LINKSTARTUP; |
| cmd.num_args = UICCMD_NO_ARGS; |
| cmd.timeout_msecs = DME_LINK_START_TIMEOUT; |
| |
| if (uic_send_cmd(dev, &cmd) || cmd.gen_err_code == UICCMD_FAILURE) |
| goto dme_send_linkstartup_req_err; |
| |
| return UFS_SUCCESS; |
| |
| dme_send_linkstartup_req_err: |
| dprintf(CRITICAL, "DME_LINKSTARTUP command failed.\n"); |
| return -UFS_FAILURE; |
| } |
| |
| int dme_get_req(struct ufs_dev *dev, struct dme_get_req_type *req) |
| { |
| struct uic_cmd cmd; |
| |
| cmd.uiccmd = UICCMDR_DME_GET; |
| cmd.num_args = UICCMD_ONE_ARGS; |
| cmd.uiccmdarg1 = req->attribute << 16 | req->index; |
| cmd.timeout_msecs = INFINITE_TIME; |
| |
| if (uic_send_cmd(dev, &cmd) || cmd.gen_err_code == UICCMD_FAILURE) |
| goto dme_get_req_err; |
| |
| /* Return the result. */ |
| *(req->mibval) = cmd.uiccmdarg3; |
| |
| return UFS_SUCCESS; |
| |
| dme_get_req_err: |
| dprintf(CRITICAL, "DME_GET command failed.\n"); |
| return -UFS_FAILURE; |
| } |
| |
| static int dme_get_query_resp(struct ufs_dev *dev, |
| struct upiu_req_build_type *req_upiu, |
| addr_t buffer, |
| size_t buf_len) |
| { |
| struct upiu_trans_mgmt_query_hdr *resp_upiu; |
| |
| resp_upiu = (struct upiu_trans_mgmt_query_hdr *) req_upiu->resp_ptr; |
| |
| if (resp_upiu->opcode != req_upiu->opcode) |
| return -UFS_FAILURE; |
| if (resp_upiu->basic_hdr.response != UPIU_QUERY_RESP_SUCCESS) |
| return -UFS_FAILURE; |
| |
| switch (resp_upiu->opcode) |
| { |
| case UPIU_QUERY_OP_READ_FLAG: |
| case UPIU_QUERY_OP_SET_FLAG: |
| if (buf_len < sizeof(uint32_t)) |
| { |
| dprintf(CRITICAL, "Insufficient buffer space.\n"); |
| return -UFS_FAILURE; |
| } |
| |
| *((uint32_t *) buffer) = resp_upiu->flag_value; |
| break; |
| case UPIU_QUERY_OP_TOGGLE_FLAG: |
| case UPIU_QUERY_OP_CLEAR_FLAG: |
| case UPIU_QUERY_OP_READ_DESCRIPTOR: |
| break; |
| default: dprintf(CRITICAL, "UPIU query opcode not supported.\n"); |
| return -UFS_FAILURE; |
| } |
| |
| return UFS_SUCCESS; |
| } |
| |
| static int dme_send_query_upiu(struct ufs_dev *dev, struct utp_query_req_upiu_type *query) |
| { |
| struct upiu_trans_mgmt_query_hdr resp_upiu; |
| struct upiu_req_build_type req_upiu; |
| int ret; |
| |
| memset(&req_upiu, 0, sizeof(req_upiu)); |
| |
| req_upiu.opcode = query->opcode; |
| req_upiu.selector = query->selector; |
| req_upiu.index = query->index; |
| req_upiu.idn = query->idn; |
| req_upiu.trans_type = UPIU_TYPE_QUERY_REQ; |
| req_upiu.dd = UTRD_NO_DATA_TRANSFER; |
| req_upiu.resp_ptr = (struct upiu_basic_hdr *) &resp_upiu; |
| req_upiu.resp_len = sizeof(resp_upiu); |
| req_upiu.resp_data_ptr = query->buf; |
| req_upiu.timeout_msecs = UTP_GENERIC_CMD_TIMEOUT; |
| |
| if (query->opcode == UPIU_QUERY_OP_READ_DESCRIPTOR) |
| { |
| req_upiu.resp_data_len = query->buf_len; |
| } |
| |
| ret = utp_enqueue_upiu(dev, &req_upiu); |
| if (ret) |
| goto utp_send_query_upiu_err; |
| |
| ret = dme_get_query_resp(dev, &req_upiu, query->buf, query->buf_len); |
| if (ret) |
| goto utp_send_query_upiu_err; |
| |
| utp_send_query_upiu_err: |
| return ret; |
| } |
| |
| int dme_set_fdeviceinit(struct ufs_dev *dev) |
| { |
| STACKBUF_DMA_ALIGN(result, sizeof(uint32_t)); |
| uint32_t try_again = DME_FDEVICEINIT_RETRIES; |
| struct utp_query_req_upiu_type read_query = {UPIU_QUERY_OP_READ_FLAG, |
| UFS_IDX_fDeviceInit, |
| 0, |
| 0, |
| (addr_t) result, |
| sizeof(uint32_t)}; |
| struct utp_query_req_upiu_type set_query = {UPIU_QUERY_OP_SET_FLAG, |
| UFS_IDX_fDeviceInit, |
| 0, |
| 0, |
| (addr_t) result, |
| sizeof(uint32_t)}; |
| |
| |
| if (dme_send_query_upiu(dev, &read_query)) |
| return -UFS_FAILURE; |
| |
| arch_invalidate_cache_range((addr_t) result, sizeof(uint32_t)); |
| |
| if (*result == 1) |
| goto utp_set_fdeviceinit_done; |
| |
| do |
| { |
| try_again--; |
| |
| if (dme_send_query_upiu(dev, &set_query)) |
| return -UFS_FAILURE; |
| |
| if (dme_send_query_upiu(dev, &read_query)) |
| return -UFS_FAILURE; |
| |
| if (*result == 1) |
| break; |
| } while (try_again); |
| |
| utp_set_fdeviceinit_done: |
| return UFS_SUCCESS; |
| } |
| |
| int dme_read_string_desc(struct ufs_dev *dev, uint8_t index, struct ufs_string_desc *desc) |
| { |
| struct utp_query_req_upiu_type query = {UPIU_QUERY_OP_READ_DESCRIPTOR, |
| UFS_DESC_IDN_STRING, |
| index, |
| 0, |
| (addr_t) desc, |
| sizeof(struct ufs_string_desc)}; |
| |
| if (dme_send_query_upiu(dev, &query)) |
| return -UFS_FAILURE; |
| |
| if (desc->desc_len != 0) |
| return UFS_SUCCESS; |
| |
| return -UFS_FAILURE; |
| } |
| |
| static uint32_t dme_parse_serial_no(struct ufs_string_desc *desc) |
| { |
| uint32_t serial_no=0; |
| uint16_t *ptr; |
| int index=0,len=0; |
| |
| if(desc->desc_len <= 0) |
| return -UFS_FAILURE; |
| |
| ptr = desc->serial_num; |
| len = (desc->desc_len-2)/2; |
| |
| for(index=0; index<len; index++) |
| { |
| serial_no += *ptr; |
| ptr++; |
| } |
| |
| return serial_no; |
| } |
| |
| int dme_read_device_desc(struct ufs_dev *dev) |
| { |
| STACKBUF_DMA_ALIGN(dev_desc, sizeof(struct ufs_dev_desc)); |
| STACKBUF_DMA_ALIGN(desc, sizeof(struct ufs_string_desc)); |
| struct ufs_dev_desc *device_desc = dev_desc; |
| struct ufs_string_desc *str_desc = desc; |
| struct utp_query_req_upiu_type query = {UPIU_QUERY_OP_READ_DESCRIPTOR, |
| UFS_DESC_IDN_DEVICE, |
| 0, |
| 0, |
| (addr_t) dev_desc, |
| sizeof(struct ufs_dev_desc)}; |
| |
| if (dme_send_query_upiu(dev, &query)) |
| return -UFS_FAILURE; |
| |
| /* Flush buffer. */ |
| arch_invalidate_cache_range((addr_t) device_desc, sizeof(struct ufs_dev_desc)); |
| |
| /* Store all relevant data */ |
| dev->num_lus = device_desc->num_lu; |
| |
| /* Get serial number for the device based on the string index. */ |
| if (dme_read_string_desc(dev, device_desc->serial_num, desc)) |
| return -UFS_FAILURE; |
| |
| /* Flush buffer. */ |
| arch_invalidate_cache_range((addr_t) str_desc, sizeof(struct ufs_string_desc)); |
| |
| dev->serial_num = dme_parse_serial_no(str_desc); |
| |
| return UFS_SUCCESS; |
| } |
| |
| int dme_read_unit_desc(struct ufs_dev *dev, uint8_t index) |
| { |
| STACKBUF_DMA_ALIGN(unit_desc, sizeof(struct ufs_unit_desc)); |
| struct ufs_unit_desc *desc = unit_desc; |
| struct utp_query_req_upiu_type query = {UPIU_QUERY_OP_READ_DESCRIPTOR, |
| UFS_DESC_IDN_UNIT, |
| index, |
| 0, |
| (addr_t) unit_desc, |
| sizeof(struct ufs_unit_desc)}; |
| |
| if (dme_send_query_upiu(dev, &query)) |
| return -UFS_FAILURE; |
| |
| /* Flush buffer. */ |
| arch_invalidate_cache_range((addr_t) desc, sizeof(struct ufs_unit_desc)); |
| |
| dev->lun_cfg[index].logical_blk_cnt = BE64(desc->logical_blk_cnt); |
| |
| dev->lun_cfg[index].erase_blk_size = BE32(desc->erase_blk_size); |
| |
| return UFS_SUCCESS; |
| } |
| |
| int dme_read_config_desc(struct ufs_dev *dev) |
| { |
| STACKBUF_DMA_ALIGN(desc, sizeof(struct ufs_config_desc)); |
| struct ufs_config_desc *config_desc = desc; |
| struct utp_query_req_upiu_type query = {UPIU_QUERY_OP_READ_DESCRIPTOR, |
| UFS_DESC_IDN_CONFIGURATION, |
| 0, |
| 0, |
| (addr_t) config_desc, |
| sizeof(struct ufs_config_desc)}; |
| |
| if (dme_send_query_upiu(dev, &query)) |
| return -UFS_FAILURE; |
| |
| /* Flush buffer. */ |
| arch_invalidate_cache_range((addr_t) config_desc, sizeof(struct ufs_config_desc)); |
| |
| return UFS_SUCCESS; |
| } |
| |
| int dme_send_nop_query(struct ufs_dev *dev) |
| { |
| struct upiu_req_build_type req_upiu; |
| struct upiu_basic_hdr resp_upiu; |
| int ret; |
| unsigned try_again; |
| |
| ret = UFS_SUCCESS; |
| try_again = DME_NOP_NUM_RETRIES; |
| |
| memset(&req_upiu, 0 , sizeof(struct upiu_req_build_type)); |
| |
| req_upiu.trans_type = UPIU_TYPE_NOP_OUT; |
| req_upiu.flags = 0; |
| req_upiu.query_mgmt_func = 0; |
| req_upiu.cmd_type = UTRD_DEV_MGMT_FUNC; |
| req_upiu.dd = UTRD_NO_DATA_TRANSFER; |
| req_upiu.resp_ptr = &resp_upiu; |
| req_upiu.resp_len = sizeof(struct upiu_basic_hdr); |
| req_upiu.timeout_msecs = DME_NOP_QUERY_TIMEOUT; |
| |
| while (try_again) |
| { |
| try_again--; |
| |
| ret = utp_enqueue_upiu(dev, &req_upiu); |
| |
| if (ret == -UFS_RETRY) |
| { |
| continue; |
| } |
| else if (ret == -UFS_FAILURE) |
| { |
| dprintf(CRITICAL, "sending nop out failed.\n"); |
| goto upiu_send_nop_out_err; |
| } |
| |
| /* Check response UPIU */ |
| if (resp_upiu.trans_type != UPIU_TYPE_NOP_IN) |
| { |
| dprintf(CRITICAL, "Command failed. command = %x. Invalid response.\n", req_upiu.trans_type); |
| ret = -UFS_FAILURE; |
| goto upiu_send_nop_out_err; |
| } |
| else |
| break; |
| } |
| |
| upiu_send_nop_out_err: |
| return ret; |
| } |
| |
| int utp_build_query_req_upiu(struct upiu_trans_mgmt_query_hdr *req_upiu, |
| struct upiu_req_build_type *upiu_data) |
| { |
| req_upiu->opcode = upiu_data->opcode; |
| req_upiu->idn = upiu_data->idn; |
| req_upiu->index = upiu_data->index; |
| req_upiu->selector = upiu_data->selector; |
| req_upiu->resp_len = BE16(upiu_data->resp_data_len); |
| |
| switch (upiu_data->opcode) |
| { |
| case UPIU_QUERY_OP_READ_FLAG: |
| case UPIU_QUERY_OP_READ_DESCRIPTOR: |
| req_upiu->basic_hdr.query_task_mgmt_func = UPIU_QUERY_FUNC_STD_READ_REQ; |
| break; |
| case UPIU_QUERY_OP_TOGGLE_FLAG: |
| case UPIU_QUERY_OP_CLEAR_FLAG: |
| case UPIU_QUERY_OP_SET_FLAG: |
| req_upiu->basic_hdr.query_task_mgmt_func = UPIU_QUERY_FUNC_STD_WRITE_REQ; |
| break; |
| default: dprintf(CRITICAL, "UPIU query opcode not supported.\n"); |
| return -UFS_FAILURE; |
| } |
| |
| return UFS_SUCCESS; |
| } |