mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 13:26:40 +07:00
94c122ab01
Currently the UFS host driver has returned incorrect values for SUCCESS and FAILED. Fix it to return the correct value to the upper layer. Signed-off-by: Namjae Jeon <linkinjeon@gmail.com> Acked-by: Santosh Y <santoshsy@gmail.com> Signed-off-by: Venkatraman S <svenkatr@ti.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
1965 lines
51 KiB
C
1965 lines
51 KiB
C
/*
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* Universal Flash Storage Host controller driver
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*
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* This code is based on drivers/scsi/ufs/ufshcd.c
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* Copyright (C) 2011-2012 Samsung India Software Operations
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*
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* Santosh Yaraganavi <santosh.sy@samsung.com>
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* Vinayak Holikatti <h.vinayak@samsung.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* NO WARRANTY
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* THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
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* CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
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* LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
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* solely responsible for determining the appropriateness of using and
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* distributing the Program and assumes all risks associated with its
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* exercise of rights under this Agreement, including but not limited to
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* the risks and costs of program errors, damage to or loss of data,
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* programs or equipment, and unavailability or interruption of operations.
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* DISCLAIMER OF LIABILITY
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* NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
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* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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* USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
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* HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/pci.h>
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#include <linux/interrupt.h>
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#include <linux/io.h>
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#include <linux/delay.h>
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#include <linux/slab.h>
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#include <linux/spinlock.h>
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#include <linux/workqueue.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/wait.h>
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#include <linux/bitops.h>
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#include <asm/irq.h>
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#include <asm/byteorder.h>
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#include <scsi/scsi.h>
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#include <scsi/scsi_cmnd.h>
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#include <scsi/scsi_host.h>
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#include <scsi/scsi_tcq.h>
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#include <scsi/scsi_dbg.h>
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#include <scsi/scsi_eh.h>
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#include "ufs.h"
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#include "ufshci.h"
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#define UFSHCD "ufshcd"
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#define UFSHCD_DRIVER_VERSION "0.1"
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enum {
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UFSHCD_MAX_CHANNEL = 0,
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UFSHCD_MAX_ID = 1,
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UFSHCD_MAX_LUNS = 8,
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UFSHCD_CMD_PER_LUN = 32,
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UFSHCD_CAN_QUEUE = 32,
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};
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/* UFSHCD states */
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enum {
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UFSHCD_STATE_OPERATIONAL,
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UFSHCD_STATE_RESET,
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UFSHCD_STATE_ERROR,
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};
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/* Interrupt configuration options */
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enum {
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UFSHCD_INT_DISABLE,
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UFSHCD_INT_ENABLE,
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UFSHCD_INT_CLEAR,
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};
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/* Interrupt aggregation options */
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enum {
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INT_AGGR_RESET,
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INT_AGGR_CONFIG,
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};
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/**
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* struct uic_command - UIC command structure
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* @command: UIC command
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* @argument1: UIC command argument 1
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* @argument2: UIC command argument 2
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* @argument3: UIC command argument 3
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* @cmd_active: Indicate if UIC command is outstanding
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* @result: UIC command result
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*/
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struct uic_command {
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u32 command;
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u32 argument1;
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u32 argument2;
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u32 argument3;
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int cmd_active;
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int result;
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};
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/**
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* struct ufs_hba - per adapter private structure
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* @mmio_base: UFSHCI base register address
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* @ucdl_base_addr: UFS Command Descriptor base address
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* @utrdl_base_addr: UTP Transfer Request Descriptor base address
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* @utmrdl_base_addr: UTP Task Management Descriptor base address
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* @ucdl_dma_addr: UFS Command Descriptor DMA address
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* @utrdl_dma_addr: UTRDL DMA address
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* @utmrdl_dma_addr: UTMRDL DMA address
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* @host: Scsi_Host instance of the driver
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* @pdev: PCI device handle
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* @lrb: local reference block
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* @outstanding_tasks: Bits representing outstanding task requests
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* @outstanding_reqs: Bits representing outstanding transfer requests
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* @capabilities: UFS Controller Capabilities
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* @nutrs: Transfer Request Queue depth supported by controller
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* @nutmrs: Task Management Queue depth supported by controller
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* @active_uic_cmd: handle of active UIC command
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* @ufshcd_tm_wait_queue: wait queue for task management
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* @tm_condition: condition variable for task management
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* @ufshcd_state: UFSHCD states
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* @int_enable_mask: Interrupt Mask Bits
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* @uic_workq: Work queue for UIC completion handling
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* @feh_workq: Work queue for fatal controller error handling
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* @errors: HBA errors
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*/
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struct ufs_hba {
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void __iomem *mmio_base;
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/* Virtual memory reference */
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struct utp_transfer_cmd_desc *ucdl_base_addr;
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struct utp_transfer_req_desc *utrdl_base_addr;
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struct utp_task_req_desc *utmrdl_base_addr;
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/* DMA memory reference */
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dma_addr_t ucdl_dma_addr;
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dma_addr_t utrdl_dma_addr;
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dma_addr_t utmrdl_dma_addr;
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struct Scsi_Host *host;
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struct pci_dev *pdev;
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struct ufshcd_lrb *lrb;
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unsigned long outstanding_tasks;
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unsigned long outstanding_reqs;
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u32 capabilities;
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int nutrs;
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int nutmrs;
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u32 ufs_version;
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struct uic_command active_uic_cmd;
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wait_queue_head_t ufshcd_tm_wait_queue;
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unsigned long tm_condition;
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u32 ufshcd_state;
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u32 int_enable_mask;
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/* Work Queues */
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struct work_struct uic_workq;
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struct work_struct feh_workq;
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/* HBA Errors */
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u32 errors;
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};
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/**
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* struct ufshcd_lrb - local reference block
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* @utr_descriptor_ptr: UTRD address of the command
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* @ucd_cmd_ptr: UCD address of the command
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* @ucd_rsp_ptr: Response UPIU address for this command
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* @ucd_prdt_ptr: PRDT address of the command
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* @cmd: pointer to SCSI command
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* @sense_buffer: pointer to sense buffer address of the SCSI command
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* @sense_bufflen: Length of the sense buffer
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* @scsi_status: SCSI status of the command
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* @command_type: SCSI, UFS, Query.
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* @task_tag: Task tag of the command
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* @lun: LUN of the command
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*/
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struct ufshcd_lrb {
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struct utp_transfer_req_desc *utr_descriptor_ptr;
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struct utp_upiu_cmd *ucd_cmd_ptr;
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struct utp_upiu_rsp *ucd_rsp_ptr;
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struct ufshcd_sg_entry *ucd_prdt_ptr;
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struct scsi_cmnd *cmd;
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u8 *sense_buffer;
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unsigned int sense_bufflen;
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int scsi_status;
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int command_type;
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int task_tag;
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unsigned int lun;
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};
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/**
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* ufshcd_get_ufs_version - Get the UFS version supported by the HBA
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* @hba - Pointer to adapter instance
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*
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* Returns UFSHCI version supported by the controller
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*/
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static inline u32 ufshcd_get_ufs_version(struct ufs_hba *hba)
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{
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return readl(hba->mmio_base + REG_UFS_VERSION);
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}
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/**
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* ufshcd_is_device_present - Check if any device connected to
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* the host controller
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* @reg_hcs - host controller status register value
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*
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* Returns 1 if device present, 0 if no device detected
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*/
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static inline int ufshcd_is_device_present(u32 reg_hcs)
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{
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return (DEVICE_PRESENT & reg_hcs) ? 1 : 0;
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}
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/**
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* ufshcd_get_tr_ocs - Get the UTRD Overall Command Status
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* @lrb: pointer to local command reference block
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*
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* This function is used to get the OCS field from UTRD
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* Returns the OCS field in the UTRD
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*/
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static inline int ufshcd_get_tr_ocs(struct ufshcd_lrb *lrbp)
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{
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return lrbp->utr_descriptor_ptr->header.dword_2 & MASK_OCS;
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}
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/**
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* ufshcd_get_tmr_ocs - Get the UTMRD Overall Command Status
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* @task_req_descp: pointer to utp_task_req_desc structure
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*
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* This function is used to get the OCS field from UTMRD
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* Returns the OCS field in the UTMRD
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*/
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static inline int
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ufshcd_get_tmr_ocs(struct utp_task_req_desc *task_req_descp)
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{
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return task_req_descp->header.dword_2 & MASK_OCS;
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}
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/**
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* ufshcd_get_tm_free_slot - get a free slot for task management request
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* @hba: per adapter instance
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*
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* Returns maximum number of task management request slots in case of
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* task management queue full or returns the free slot number
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*/
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static inline int ufshcd_get_tm_free_slot(struct ufs_hba *hba)
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{
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return find_first_zero_bit(&hba->outstanding_tasks, hba->nutmrs);
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}
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/**
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* ufshcd_utrl_clear - Clear a bit in UTRLCLR register
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* @hba: per adapter instance
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* @pos: position of the bit to be cleared
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*/
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static inline void ufshcd_utrl_clear(struct ufs_hba *hba, u32 pos)
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{
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writel(~(1 << pos),
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(hba->mmio_base + REG_UTP_TRANSFER_REQ_LIST_CLEAR));
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}
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/**
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* ufshcd_get_lists_status - Check UCRDY, UTRLRDY and UTMRLRDY
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* @reg: Register value of host controller status
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*
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* Returns integer, 0 on Success and positive value if failed
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*/
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static inline int ufshcd_get_lists_status(u32 reg)
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{
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/*
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* The mask 0xFF is for the following HCS register bits
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* Bit Description
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* 0 Device Present
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* 1 UTRLRDY
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* 2 UTMRLRDY
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* 3 UCRDY
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* 4 HEI
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* 5 DEI
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* 6-7 reserved
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*/
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return (((reg) & (0xFF)) >> 1) ^ (0x07);
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}
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/**
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* ufshcd_get_uic_cmd_result - Get the UIC command result
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* @hba: Pointer to adapter instance
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*
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* This function gets the result of UIC command completion
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* Returns 0 on success, non zero value on error
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*/
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static inline int ufshcd_get_uic_cmd_result(struct ufs_hba *hba)
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{
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return readl(hba->mmio_base + REG_UIC_COMMAND_ARG_2) &
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MASK_UIC_COMMAND_RESULT;
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}
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/**
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* ufshcd_free_hba_memory - Free allocated memory for LRB, request
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* and task lists
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* @hba: Pointer to adapter instance
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*/
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static inline void ufshcd_free_hba_memory(struct ufs_hba *hba)
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{
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size_t utmrdl_size, utrdl_size, ucdl_size;
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kfree(hba->lrb);
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if (hba->utmrdl_base_addr) {
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utmrdl_size = sizeof(struct utp_task_req_desc) * hba->nutmrs;
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dma_free_coherent(&hba->pdev->dev, utmrdl_size,
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hba->utmrdl_base_addr, hba->utmrdl_dma_addr);
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}
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if (hba->utrdl_base_addr) {
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utrdl_size =
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(sizeof(struct utp_transfer_req_desc) * hba->nutrs);
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dma_free_coherent(&hba->pdev->dev, utrdl_size,
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hba->utrdl_base_addr, hba->utrdl_dma_addr);
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}
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if (hba->ucdl_base_addr) {
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ucdl_size =
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(sizeof(struct utp_transfer_cmd_desc) * hba->nutrs);
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dma_free_coherent(&hba->pdev->dev, ucdl_size,
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hba->ucdl_base_addr, hba->ucdl_dma_addr);
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}
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}
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/**
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* ufshcd_is_valid_req_rsp - checks if controller TR response is valid
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* @ucd_rsp_ptr: pointer to response UPIU
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*
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* This function checks the response UPIU for valid transaction type in
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* response field
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* Returns 0 on success, non-zero on failure
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*/
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static inline int
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ufshcd_is_valid_req_rsp(struct utp_upiu_rsp *ucd_rsp_ptr)
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{
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return ((be32_to_cpu(ucd_rsp_ptr->header.dword_0) >> 24) ==
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UPIU_TRANSACTION_RESPONSE) ? 0 : DID_ERROR << 16;
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}
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/**
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* ufshcd_get_rsp_upiu_result - Get the result from response UPIU
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* @ucd_rsp_ptr: pointer to response UPIU
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*
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* This function gets the response status and scsi_status from response UPIU
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* Returns the response result code.
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*/
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static inline int
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ufshcd_get_rsp_upiu_result(struct utp_upiu_rsp *ucd_rsp_ptr)
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{
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return be32_to_cpu(ucd_rsp_ptr->header.dword_1) & MASK_RSP_UPIU_RESULT;
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}
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/**
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* ufshcd_config_int_aggr - Configure interrupt aggregation values.
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* Currently there is no use case where we want to configure
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* interrupt aggregation dynamically. So to configure interrupt
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* aggregation, #define INT_AGGR_COUNTER_THRESHOLD_VALUE and
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* INT_AGGR_TIMEOUT_VALUE are used.
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* @hba: per adapter instance
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* @option: Interrupt aggregation option
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*/
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static inline void
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ufshcd_config_int_aggr(struct ufs_hba *hba, int option)
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{
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switch (option) {
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case INT_AGGR_RESET:
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writel((INT_AGGR_ENABLE |
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INT_AGGR_COUNTER_AND_TIMER_RESET),
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(hba->mmio_base +
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REG_UTP_TRANSFER_REQ_INT_AGG_CONTROL));
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break;
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case INT_AGGR_CONFIG:
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writel((INT_AGGR_ENABLE |
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INT_AGGR_PARAM_WRITE |
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INT_AGGR_COUNTER_THRESHOLD_VALUE |
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INT_AGGR_TIMEOUT_VALUE),
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(hba->mmio_base +
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REG_UTP_TRANSFER_REQ_INT_AGG_CONTROL));
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break;
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}
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}
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/**
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* ufshcd_enable_run_stop_reg - Enable run-stop registers,
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* When run-stop registers are set to 1, it indicates the
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* host controller that it can process the requests
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* @hba: per adapter instance
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*/
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static void ufshcd_enable_run_stop_reg(struct ufs_hba *hba)
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{
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writel(UTP_TASK_REQ_LIST_RUN_STOP_BIT,
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(hba->mmio_base +
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REG_UTP_TASK_REQ_LIST_RUN_STOP));
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writel(UTP_TRANSFER_REQ_LIST_RUN_STOP_BIT,
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(hba->mmio_base +
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REG_UTP_TRANSFER_REQ_LIST_RUN_STOP));
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}
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/**
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* ufshcd_hba_stop - Send controller to reset state
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* @hba: per adapter instance
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*/
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static inline void ufshcd_hba_stop(struct ufs_hba *hba)
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{
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writel(CONTROLLER_DISABLE, (hba->mmio_base + REG_CONTROLLER_ENABLE));
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}
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/**
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* ufshcd_hba_start - Start controller initialization sequence
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* @hba: per adapter instance
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*/
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static inline void ufshcd_hba_start(struct ufs_hba *hba)
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{
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writel(CONTROLLER_ENABLE , (hba->mmio_base + REG_CONTROLLER_ENABLE));
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}
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/**
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* ufshcd_is_hba_active - Get controller state
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* @hba: per adapter instance
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*
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* Returns zero if controller is active, 1 otherwise
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*/
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static inline int ufshcd_is_hba_active(struct ufs_hba *hba)
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{
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return (readl(hba->mmio_base + REG_CONTROLLER_ENABLE) & 0x1) ? 0 : 1;
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}
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/**
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* ufshcd_send_command - Send SCSI or device management commands
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* @hba: per adapter instance
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* @task_tag: Task tag of the command
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*/
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static inline
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void ufshcd_send_command(struct ufs_hba *hba, unsigned int task_tag)
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{
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__set_bit(task_tag, &hba->outstanding_reqs);
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writel((1 << task_tag),
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(hba->mmio_base + REG_UTP_TRANSFER_REQ_DOOR_BELL));
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}
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/**
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* ufshcd_copy_sense_data - Copy sense data in case of check condition
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* @lrb - pointer to local reference block
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|
*/
|
|
static inline void ufshcd_copy_sense_data(struct ufshcd_lrb *lrbp)
|
|
{
|
|
int len;
|
|
if (lrbp->sense_buffer) {
|
|
len = be16_to_cpu(lrbp->ucd_rsp_ptr->sense_data_len);
|
|
memcpy(lrbp->sense_buffer,
|
|
lrbp->ucd_rsp_ptr->sense_data,
|
|
min_t(int, len, SCSI_SENSE_BUFFERSIZE));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* ufshcd_hba_capabilities - Read controller capabilities
|
|
* @hba: per adapter instance
|
|
*/
|
|
static inline void ufshcd_hba_capabilities(struct ufs_hba *hba)
|
|
{
|
|
hba->capabilities =
|
|
readl(hba->mmio_base + REG_CONTROLLER_CAPABILITIES);
|
|
|
|
/* nutrs and nutmrs are 0 based values */
|
|
hba->nutrs = (hba->capabilities & MASK_TRANSFER_REQUESTS_SLOTS) + 1;
|
|
hba->nutmrs =
|
|
((hba->capabilities & MASK_TASK_MANAGEMENT_REQUEST_SLOTS) >> 16) + 1;
|
|
}
|
|
|
|
/**
|
|
* ufshcd_send_uic_command - Send UIC commands to unipro layers
|
|
* @hba: per adapter instance
|
|
* @uic_command: UIC command
|
|
*/
|
|
static inline void
|
|
ufshcd_send_uic_command(struct ufs_hba *hba, struct uic_command *uic_cmnd)
|
|
{
|
|
/* Write Args */
|
|
writel(uic_cmnd->argument1,
|
|
(hba->mmio_base + REG_UIC_COMMAND_ARG_1));
|
|
writel(uic_cmnd->argument2,
|
|
(hba->mmio_base + REG_UIC_COMMAND_ARG_2));
|
|
writel(uic_cmnd->argument3,
|
|
(hba->mmio_base + REG_UIC_COMMAND_ARG_3));
|
|
|
|
/* Write UIC Cmd */
|
|
writel((uic_cmnd->command & COMMAND_OPCODE_MASK),
|
|
(hba->mmio_base + REG_UIC_COMMAND));
|
|
}
|
|
|
|
/**
|
|
* ufshcd_map_sg - Map scatter-gather list to prdt
|
|
* @lrbp - pointer to local reference block
|
|
*
|
|
* Returns 0 in case of success, non-zero value in case of failure
|
|
*/
|
|
static int ufshcd_map_sg(struct ufshcd_lrb *lrbp)
|
|
{
|
|
struct ufshcd_sg_entry *prd_table;
|
|
struct scatterlist *sg;
|
|
struct scsi_cmnd *cmd;
|
|
int sg_segments;
|
|
int i;
|
|
|
|
cmd = lrbp->cmd;
|
|
sg_segments = scsi_dma_map(cmd);
|
|
if (sg_segments < 0)
|
|
return sg_segments;
|
|
|
|
if (sg_segments) {
|
|
lrbp->utr_descriptor_ptr->prd_table_length =
|
|
cpu_to_le16((u16) (sg_segments));
|
|
|
|
prd_table = (struct ufshcd_sg_entry *)lrbp->ucd_prdt_ptr;
|
|
|
|
scsi_for_each_sg(cmd, sg, sg_segments, i) {
|
|
prd_table[i].size =
|
|
cpu_to_le32(((u32) sg_dma_len(sg))-1);
|
|
prd_table[i].base_addr =
|
|
cpu_to_le32(lower_32_bits(sg->dma_address));
|
|
prd_table[i].upper_addr =
|
|
cpu_to_le32(upper_32_bits(sg->dma_address));
|
|
}
|
|
} else {
|
|
lrbp->utr_descriptor_ptr->prd_table_length = 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ufshcd_int_config - enable/disable interrupts
|
|
* @hba: per adapter instance
|
|
* @option: interrupt option
|
|
*/
|
|
static void ufshcd_int_config(struct ufs_hba *hba, u32 option)
|
|
{
|
|
switch (option) {
|
|
case UFSHCD_INT_ENABLE:
|
|
writel(hba->int_enable_mask,
|
|
(hba->mmio_base + REG_INTERRUPT_ENABLE));
|
|
break;
|
|
case UFSHCD_INT_DISABLE:
|
|
if (hba->ufs_version == UFSHCI_VERSION_10)
|
|
writel(INTERRUPT_DISABLE_MASK_10,
|
|
(hba->mmio_base + REG_INTERRUPT_ENABLE));
|
|
else
|
|
writel(INTERRUPT_DISABLE_MASK_11,
|
|
(hba->mmio_base + REG_INTERRUPT_ENABLE));
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* ufshcd_compose_upiu - form UFS Protocol Information Unit(UPIU)
|
|
* @lrb - pointer to local reference block
|
|
*/
|
|
static void ufshcd_compose_upiu(struct ufshcd_lrb *lrbp)
|
|
{
|
|
struct utp_transfer_req_desc *req_desc;
|
|
struct utp_upiu_cmd *ucd_cmd_ptr;
|
|
u32 data_direction;
|
|
u32 upiu_flags;
|
|
|
|
ucd_cmd_ptr = lrbp->ucd_cmd_ptr;
|
|
req_desc = lrbp->utr_descriptor_ptr;
|
|
|
|
switch (lrbp->command_type) {
|
|
case UTP_CMD_TYPE_SCSI:
|
|
if (lrbp->cmd->sc_data_direction == DMA_FROM_DEVICE) {
|
|
data_direction = UTP_DEVICE_TO_HOST;
|
|
upiu_flags = UPIU_CMD_FLAGS_READ;
|
|
} else if (lrbp->cmd->sc_data_direction == DMA_TO_DEVICE) {
|
|
data_direction = UTP_HOST_TO_DEVICE;
|
|
upiu_flags = UPIU_CMD_FLAGS_WRITE;
|
|
} else {
|
|
data_direction = UTP_NO_DATA_TRANSFER;
|
|
upiu_flags = UPIU_CMD_FLAGS_NONE;
|
|
}
|
|
|
|
/* Transfer request descriptor header fields */
|
|
req_desc->header.dword_0 =
|
|
cpu_to_le32(data_direction | UTP_SCSI_COMMAND);
|
|
|
|
/*
|
|
* assigning invalid value for command status. Controller
|
|
* updates OCS on command completion, with the command
|
|
* status
|
|
*/
|
|
req_desc->header.dword_2 =
|
|
cpu_to_le32(OCS_INVALID_COMMAND_STATUS);
|
|
|
|
/* command descriptor fields */
|
|
ucd_cmd_ptr->header.dword_0 =
|
|
cpu_to_be32(UPIU_HEADER_DWORD(UPIU_TRANSACTION_COMMAND,
|
|
upiu_flags,
|
|
lrbp->lun,
|
|
lrbp->task_tag));
|
|
ucd_cmd_ptr->header.dword_1 =
|
|
cpu_to_be32(
|
|
UPIU_HEADER_DWORD(UPIU_COMMAND_SET_TYPE_SCSI,
|
|
0,
|
|
0,
|
|
0));
|
|
|
|
/* Total EHS length and Data segment length will be zero */
|
|
ucd_cmd_ptr->header.dword_2 = 0;
|
|
|
|
ucd_cmd_ptr->exp_data_transfer_len =
|
|
cpu_to_be32(lrbp->cmd->transfersize);
|
|
|
|
memcpy(ucd_cmd_ptr->cdb,
|
|
lrbp->cmd->cmnd,
|
|
(min_t(unsigned short,
|
|
lrbp->cmd->cmd_len,
|
|
MAX_CDB_SIZE)));
|
|
break;
|
|
case UTP_CMD_TYPE_DEV_MANAGE:
|
|
/* For query function implementation */
|
|
break;
|
|
case UTP_CMD_TYPE_UFS:
|
|
/* For UFS native command implementation */
|
|
break;
|
|
} /* end of switch */
|
|
}
|
|
|
|
/**
|
|
* ufshcd_queuecommand - main entry point for SCSI requests
|
|
* @cmd: command from SCSI Midlayer
|
|
* @done: call back function
|
|
*
|
|
* Returns 0 for success, non-zero in case of failure
|
|
*/
|
|
static int ufshcd_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
|
|
{
|
|
struct ufshcd_lrb *lrbp;
|
|
struct ufs_hba *hba;
|
|
unsigned long flags;
|
|
int tag;
|
|
int err = 0;
|
|
|
|
hba = shost_priv(host);
|
|
|
|
tag = cmd->request->tag;
|
|
|
|
if (hba->ufshcd_state != UFSHCD_STATE_OPERATIONAL) {
|
|
err = SCSI_MLQUEUE_HOST_BUSY;
|
|
goto out;
|
|
}
|
|
|
|
lrbp = &hba->lrb[tag];
|
|
|
|
lrbp->cmd = cmd;
|
|
lrbp->sense_bufflen = SCSI_SENSE_BUFFERSIZE;
|
|
lrbp->sense_buffer = cmd->sense_buffer;
|
|
lrbp->task_tag = tag;
|
|
lrbp->lun = cmd->device->lun;
|
|
|
|
lrbp->command_type = UTP_CMD_TYPE_SCSI;
|
|
|
|
/* form UPIU before issuing the command */
|
|
ufshcd_compose_upiu(lrbp);
|
|
err = ufshcd_map_sg(lrbp);
|
|
if (err)
|
|
goto out;
|
|
|
|
/* issue command to the controller */
|
|
spin_lock_irqsave(hba->host->host_lock, flags);
|
|
ufshcd_send_command(hba, tag);
|
|
spin_unlock_irqrestore(hba->host->host_lock, flags);
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* ufshcd_memory_alloc - allocate memory for host memory space data structures
|
|
* @hba: per adapter instance
|
|
*
|
|
* 1. Allocate DMA memory for Command Descriptor array
|
|
* Each command descriptor consist of Command UPIU, Response UPIU and PRDT
|
|
* 2. Allocate DMA memory for UTP Transfer Request Descriptor List (UTRDL).
|
|
* 3. Allocate DMA memory for UTP Task Management Request Descriptor List
|
|
* (UTMRDL)
|
|
* 4. Allocate memory for local reference block(lrb).
|
|
*
|
|
* Returns 0 for success, non-zero in case of failure
|
|
*/
|
|
static int ufshcd_memory_alloc(struct ufs_hba *hba)
|
|
{
|
|
size_t utmrdl_size, utrdl_size, ucdl_size;
|
|
|
|
/* Allocate memory for UTP command descriptors */
|
|
ucdl_size = (sizeof(struct utp_transfer_cmd_desc) * hba->nutrs);
|
|
hba->ucdl_base_addr = dma_alloc_coherent(&hba->pdev->dev,
|
|
ucdl_size,
|
|
&hba->ucdl_dma_addr,
|
|
GFP_KERNEL);
|
|
|
|
/*
|
|
* UFSHCI requires UTP command descriptor to be 128 byte aligned.
|
|
* make sure hba->ucdl_dma_addr is aligned to PAGE_SIZE
|
|
* if hba->ucdl_dma_addr is aligned to PAGE_SIZE, then it will
|
|
* be aligned to 128 bytes as well
|
|
*/
|
|
if (!hba->ucdl_base_addr ||
|
|
WARN_ON(hba->ucdl_dma_addr & (PAGE_SIZE - 1))) {
|
|
dev_err(&hba->pdev->dev,
|
|
"Command Descriptor Memory allocation failed\n");
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Allocate memory for UTP Transfer descriptors
|
|
* UFSHCI requires 1024 byte alignment of UTRD
|
|
*/
|
|
utrdl_size = (sizeof(struct utp_transfer_req_desc) * hba->nutrs);
|
|
hba->utrdl_base_addr = dma_alloc_coherent(&hba->pdev->dev,
|
|
utrdl_size,
|
|
&hba->utrdl_dma_addr,
|
|
GFP_KERNEL);
|
|
if (!hba->utrdl_base_addr ||
|
|
WARN_ON(hba->utrdl_dma_addr & (PAGE_SIZE - 1))) {
|
|
dev_err(&hba->pdev->dev,
|
|
"Transfer Descriptor Memory allocation failed\n");
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Allocate memory for UTP Task Management descriptors
|
|
* UFSHCI requires 1024 byte alignment of UTMRD
|
|
*/
|
|
utmrdl_size = sizeof(struct utp_task_req_desc) * hba->nutmrs;
|
|
hba->utmrdl_base_addr = dma_alloc_coherent(&hba->pdev->dev,
|
|
utmrdl_size,
|
|
&hba->utmrdl_dma_addr,
|
|
GFP_KERNEL);
|
|
if (!hba->utmrdl_base_addr ||
|
|
WARN_ON(hba->utmrdl_dma_addr & (PAGE_SIZE - 1))) {
|
|
dev_err(&hba->pdev->dev,
|
|
"Task Management Descriptor Memory allocation failed\n");
|
|
goto out;
|
|
}
|
|
|
|
/* Allocate memory for local reference block */
|
|
hba->lrb = kcalloc(hba->nutrs, sizeof(struct ufshcd_lrb), GFP_KERNEL);
|
|
if (!hba->lrb) {
|
|
dev_err(&hba->pdev->dev, "LRB Memory allocation failed\n");
|
|
goto out;
|
|
}
|
|
return 0;
|
|
out:
|
|
ufshcd_free_hba_memory(hba);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/**
|
|
* ufshcd_host_memory_configure - configure local reference block with
|
|
* memory offsets
|
|
* @hba: per adapter instance
|
|
*
|
|
* Configure Host memory space
|
|
* 1. Update Corresponding UTRD.UCDBA and UTRD.UCDBAU with UCD DMA
|
|
* address.
|
|
* 2. Update each UTRD with Response UPIU offset, Response UPIU length
|
|
* and PRDT offset.
|
|
* 3. Save the corresponding addresses of UTRD, UCD.CMD, UCD.RSP and UCD.PRDT
|
|
* into local reference block.
|
|
*/
|
|
static void ufshcd_host_memory_configure(struct ufs_hba *hba)
|
|
{
|
|
struct utp_transfer_cmd_desc *cmd_descp;
|
|
struct utp_transfer_req_desc *utrdlp;
|
|
dma_addr_t cmd_desc_dma_addr;
|
|
dma_addr_t cmd_desc_element_addr;
|
|
u16 response_offset;
|
|
u16 prdt_offset;
|
|
int cmd_desc_size;
|
|
int i;
|
|
|
|
utrdlp = hba->utrdl_base_addr;
|
|
cmd_descp = hba->ucdl_base_addr;
|
|
|
|
response_offset =
|
|
offsetof(struct utp_transfer_cmd_desc, response_upiu);
|
|
prdt_offset =
|
|
offsetof(struct utp_transfer_cmd_desc, prd_table);
|
|
|
|
cmd_desc_size = sizeof(struct utp_transfer_cmd_desc);
|
|
cmd_desc_dma_addr = hba->ucdl_dma_addr;
|
|
|
|
for (i = 0; i < hba->nutrs; i++) {
|
|
/* Configure UTRD with command descriptor base address */
|
|
cmd_desc_element_addr =
|
|
(cmd_desc_dma_addr + (cmd_desc_size * i));
|
|
utrdlp[i].command_desc_base_addr_lo =
|
|
cpu_to_le32(lower_32_bits(cmd_desc_element_addr));
|
|
utrdlp[i].command_desc_base_addr_hi =
|
|
cpu_to_le32(upper_32_bits(cmd_desc_element_addr));
|
|
|
|
/* Response upiu and prdt offset should be in double words */
|
|
utrdlp[i].response_upiu_offset =
|
|
cpu_to_le16((response_offset >> 2));
|
|
utrdlp[i].prd_table_offset =
|
|
cpu_to_le16((prdt_offset >> 2));
|
|
utrdlp[i].response_upiu_length =
|
|
cpu_to_le16(ALIGNED_UPIU_SIZE);
|
|
|
|
hba->lrb[i].utr_descriptor_ptr = (utrdlp + i);
|
|
hba->lrb[i].ucd_cmd_ptr =
|
|
(struct utp_upiu_cmd *)(cmd_descp + i);
|
|
hba->lrb[i].ucd_rsp_ptr =
|
|
(struct utp_upiu_rsp *)cmd_descp[i].response_upiu;
|
|
hba->lrb[i].ucd_prdt_ptr =
|
|
(struct ufshcd_sg_entry *)cmd_descp[i].prd_table;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* ufshcd_dme_link_startup - Notify Unipro to perform link startup
|
|
* @hba: per adapter instance
|
|
*
|
|
* UIC_CMD_DME_LINK_STARTUP command must be issued to Unipro layer,
|
|
* in order to initialize the Unipro link startup procedure.
|
|
* Once the Unipro links are up, the device connected to the controller
|
|
* is detected.
|
|
*
|
|
* Returns 0 on success, non-zero value on failure
|
|
*/
|
|
static int ufshcd_dme_link_startup(struct ufs_hba *hba)
|
|
{
|
|
struct uic_command *uic_cmd;
|
|
unsigned long flags;
|
|
|
|
/* check if controller is ready to accept UIC commands */
|
|
if (((readl(hba->mmio_base + REG_CONTROLLER_STATUS)) &
|
|
UIC_COMMAND_READY) == 0x0) {
|
|
dev_err(&hba->pdev->dev,
|
|
"Controller not ready"
|
|
" to accept UIC commands\n");
|
|
return -EIO;
|
|
}
|
|
|
|
spin_lock_irqsave(hba->host->host_lock, flags);
|
|
|
|
/* form UIC command */
|
|
uic_cmd = &hba->active_uic_cmd;
|
|
uic_cmd->command = UIC_CMD_DME_LINK_STARTUP;
|
|
uic_cmd->argument1 = 0;
|
|
uic_cmd->argument2 = 0;
|
|
uic_cmd->argument3 = 0;
|
|
|
|
/* enable UIC related interrupts */
|
|
hba->int_enable_mask |= UIC_COMMAND_COMPL;
|
|
ufshcd_int_config(hba, UFSHCD_INT_ENABLE);
|
|
|
|
/* sending UIC commands to controller */
|
|
ufshcd_send_uic_command(hba, uic_cmd);
|
|
spin_unlock_irqrestore(hba->host->host_lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ufshcd_make_hba_operational - Make UFS controller operational
|
|
* @hba: per adapter instance
|
|
*
|
|
* To bring UFS host controller to operational state,
|
|
* 1. Check if device is present
|
|
* 2. Configure run-stop-registers
|
|
* 3. Enable required interrupts
|
|
* 4. Configure interrupt aggregation
|
|
*
|
|
* Returns 0 on success, non-zero value on failure
|
|
*/
|
|
static int ufshcd_make_hba_operational(struct ufs_hba *hba)
|
|
{
|
|
int err = 0;
|
|
u32 reg;
|
|
|
|
/* check if device present */
|
|
reg = readl((hba->mmio_base + REG_CONTROLLER_STATUS));
|
|
if (!ufshcd_is_device_present(reg)) {
|
|
dev_err(&hba->pdev->dev, "cc: Device not present\n");
|
|
err = -ENXIO;
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* UCRDY, UTMRLDY and UTRLRDY bits must be 1
|
|
* DEI, HEI bits must be 0
|
|
*/
|
|
if (!(ufshcd_get_lists_status(reg))) {
|
|
ufshcd_enable_run_stop_reg(hba);
|
|
} else {
|
|
dev_err(&hba->pdev->dev,
|
|
"Host controller not ready to process requests");
|
|
err = -EIO;
|
|
goto out;
|
|
}
|
|
|
|
/* Enable required interrupts */
|
|
hba->int_enable_mask |= (UTP_TRANSFER_REQ_COMPL |
|
|
UIC_ERROR |
|
|
UTP_TASK_REQ_COMPL |
|
|
DEVICE_FATAL_ERROR |
|
|
CONTROLLER_FATAL_ERROR |
|
|
SYSTEM_BUS_FATAL_ERROR);
|
|
ufshcd_int_config(hba, UFSHCD_INT_ENABLE);
|
|
|
|
/* Configure interrupt aggregation */
|
|
ufshcd_config_int_aggr(hba, INT_AGGR_CONFIG);
|
|
|
|
if (hba->ufshcd_state == UFSHCD_STATE_RESET)
|
|
scsi_unblock_requests(hba->host);
|
|
|
|
hba->ufshcd_state = UFSHCD_STATE_OPERATIONAL;
|
|
scsi_scan_host(hba->host);
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* ufshcd_hba_enable - initialize the controller
|
|
* @hba: per adapter instance
|
|
*
|
|
* The controller resets itself and controller firmware initialization
|
|
* sequence kicks off. When controller is ready it will set
|
|
* the Host Controller Enable bit to 1.
|
|
*
|
|
* Returns 0 on success, non-zero value on failure
|
|
*/
|
|
static int ufshcd_hba_enable(struct ufs_hba *hba)
|
|
{
|
|
int retry;
|
|
|
|
/*
|
|
* msleep of 1 and 5 used in this function might result in msleep(20),
|
|
* but it was necessary to send the UFS FPGA to reset mode during
|
|
* development and testing of this driver. msleep can be changed to
|
|
* mdelay and retry count can be reduced based on the controller.
|
|
*/
|
|
if (!ufshcd_is_hba_active(hba)) {
|
|
|
|
/* change controller state to "reset state" */
|
|
ufshcd_hba_stop(hba);
|
|
|
|
/*
|
|
* This delay is based on the testing done with UFS host
|
|
* controller FPGA. The delay can be changed based on the
|
|
* host controller used.
|
|
*/
|
|
msleep(5);
|
|
}
|
|
|
|
/* start controller initialization sequence */
|
|
ufshcd_hba_start(hba);
|
|
|
|
/*
|
|
* To initialize a UFS host controller HCE bit must be set to 1.
|
|
* During initialization the HCE bit value changes from 1->0->1.
|
|
* When the host controller completes initialization sequence
|
|
* it sets the value of HCE bit to 1. The same HCE bit is read back
|
|
* to check if the controller has completed initialization sequence.
|
|
* So without this delay the value HCE = 1, set in the previous
|
|
* instruction might be read back.
|
|
* This delay can be changed based on the controller.
|
|
*/
|
|
msleep(1);
|
|
|
|
/* wait for the host controller to complete initialization */
|
|
retry = 10;
|
|
while (ufshcd_is_hba_active(hba)) {
|
|
if (retry) {
|
|
retry--;
|
|
} else {
|
|
dev_err(&hba->pdev->dev,
|
|
"Controller enable failed\n");
|
|
return -EIO;
|
|
}
|
|
msleep(5);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ufshcd_initialize_hba - start the initialization process
|
|
* @hba: per adapter instance
|
|
*
|
|
* 1. Enable the controller via ufshcd_hba_enable.
|
|
* 2. Program the Transfer Request List Address with the starting address of
|
|
* UTRDL.
|
|
* 3. Program the Task Management Request List Address with starting address
|
|
* of UTMRDL.
|
|
*
|
|
* Returns 0 on success, non-zero value on failure.
|
|
*/
|
|
static int ufshcd_initialize_hba(struct ufs_hba *hba)
|
|
{
|
|
if (ufshcd_hba_enable(hba))
|
|
return -EIO;
|
|
|
|
/* Configure UTRL and UTMRL base address registers */
|
|
writel(lower_32_bits(hba->utrdl_dma_addr),
|
|
(hba->mmio_base + REG_UTP_TRANSFER_REQ_LIST_BASE_L));
|
|
writel(upper_32_bits(hba->utrdl_dma_addr),
|
|
(hba->mmio_base + REG_UTP_TRANSFER_REQ_LIST_BASE_H));
|
|
writel(lower_32_bits(hba->utmrdl_dma_addr),
|
|
(hba->mmio_base + REG_UTP_TASK_REQ_LIST_BASE_L));
|
|
writel(upper_32_bits(hba->utmrdl_dma_addr),
|
|
(hba->mmio_base + REG_UTP_TASK_REQ_LIST_BASE_H));
|
|
|
|
/* Initialize unipro link startup procedure */
|
|
return ufshcd_dme_link_startup(hba);
|
|
}
|
|
|
|
/**
|
|
* ufshcd_do_reset - reset the host controller
|
|
* @hba: per adapter instance
|
|
*
|
|
* Returns SUCCESS/FAILED
|
|
*/
|
|
static int ufshcd_do_reset(struct ufs_hba *hba)
|
|
{
|
|
struct ufshcd_lrb *lrbp;
|
|
unsigned long flags;
|
|
int tag;
|
|
|
|
/* block commands from midlayer */
|
|
scsi_block_requests(hba->host);
|
|
|
|
spin_lock_irqsave(hba->host->host_lock, flags);
|
|
hba->ufshcd_state = UFSHCD_STATE_RESET;
|
|
|
|
/* send controller to reset state */
|
|
ufshcd_hba_stop(hba);
|
|
spin_unlock_irqrestore(hba->host->host_lock, flags);
|
|
|
|
/* abort outstanding commands */
|
|
for (tag = 0; tag < hba->nutrs; tag++) {
|
|
if (test_bit(tag, &hba->outstanding_reqs)) {
|
|
lrbp = &hba->lrb[tag];
|
|
scsi_dma_unmap(lrbp->cmd);
|
|
lrbp->cmd->result = DID_RESET << 16;
|
|
lrbp->cmd->scsi_done(lrbp->cmd);
|
|
lrbp->cmd = NULL;
|
|
}
|
|
}
|
|
|
|
/* clear outstanding request/task bit maps */
|
|
hba->outstanding_reqs = 0;
|
|
hba->outstanding_tasks = 0;
|
|
|
|
/* start the initialization process */
|
|
if (ufshcd_initialize_hba(hba)) {
|
|
dev_err(&hba->pdev->dev,
|
|
"Reset: Controller initialization failed\n");
|
|
return FAILED;
|
|
}
|
|
return SUCCESS;
|
|
}
|
|
|
|
/**
|
|
* ufshcd_slave_alloc - handle initial SCSI device configurations
|
|
* @sdev: pointer to SCSI device
|
|
*
|
|
* Returns success
|
|
*/
|
|
static int ufshcd_slave_alloc(struct scsi_device *sdev)
|
|
{
|
|
struct ufs_hba *hba;
|
|
|
|
hba = shost_priv(sdev->host);
|
|
sdev->tagged_supported = 1;
|
|
|
|
/* Mode sense(6) is not supported by UFS, so use Mode sense(10) */
|
|
sdev->use_10_for_ms = 1;
|
|
scsi_set_tag_type(sdev, MSG_SIMPLE_TAG);
|
|
|
|
/*
|
|
* Inform SCSI Midlayer that the LUN queue depth is same as the
|
|
* controller queue depth. If a LUN queue depth is less than the
|
|
* controller queue depth and if the LUN reports
|
|
* SAM_STAT_TASK_SET_FULL, the LUN queue depth will be adjusted
|
|
* with scsi_adjust_queue_depth.
|
|
*/
|
|
scsi_activate_tcq(sdev, hba->nutrs);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ufshcd_slave_destroy - remove SCSI device configurations
|
|
* @sdev: pointer to SCSI device
|
|
*/
|
|
static void ufshcd_slave_destroy(struct scsi_device *sdev)
|
|
{
|
|
struct ufs_hba *hba;
|
|
|
|
hba = shost_priv(sdev->host);
|
|
scsi_deactivate_tcq(sdev, hba->nutrs);
|
|
}
|
|
|
|
/**
|
|
* ufshcd_task_req_compl - handle task management request completion
|
|
* @hba: per adapter instance
|
|
* @index: index of the completed request
|
|
*
|
|
* Returns SUCCESS/FAILED
|
|
*/
|
|
static int ufshcd_task_req_compl(struct ufs_hba *hba, u32 index)
|
|
{
|
|
struct utp_task_req_desc *task_req_descp;
|
|
struct utp_upiu_task_rsp *task_rsp_upiup;
|
|
unsigned long flags;
|
|
int ocs_value;
|
|
int task_result;
|
|
|
|
spin_lock_irqsave(hba->host->host_lock, flags);
|
|
|
|
/* Clear completed tasks from outstanding_tasks */
|
|
__clear_bit(index, &hba->outstanding_tasks);
|
|
|
|
task_req_descp = hba->utmrdl_base_addr;
|
|
ocs_value = ufshcd_get_tmr_ocs(&task_req_descp[index]);
|
|
|
|
if (ocs_value == OCS_SUCCESS) {
|
|
task_rsp_upiup = (struct utp_upiu_task_rsp *)
|
|
task_req_descp[index].task_rsp_upiu;
|
|
task_result = be32_to_cpu(task_rsp_upiup->header.dword_1);
|
|
task_result = ((task_result & MASK_TASK_RESPONSE) >> 8);
|
|
|
|
if (task_result != UPIU_TASK_MANAGEMENT_FUNC_COMPL &&
|
|
task_result != UPIU_TASK_MANAGEMENT_FUNC_SUCCEEDED)
|
|
task_result = FAILED;
|
|
else
|
|
task_result = SUCCESS;
|
|
} else {
|
|
task_result = FAILED;
|
|
dev_err(&hba->pdev->dev,
|
|
"trc: Invalid ocs = %x\n", ocs_value);
|
|
}
|
|
spin_unlock_irqrestore(hba->host->host_lock, flags);
|
|
return task_result;
|
|
}
|
|
|
|
/**
|
|
* ufshcd_adjust_lun_qdepth - Update LUN queue depth if device responds with
|
|
* SAM_STAT_TASK_SET_FULL SCSI command status.
|
|
* @cmd: pointer to SCSI command
|
|
*/
|
|
static void ufshcd_adjust_lun_qdepth(struct scsi_cmnd *cmd)
|
|
{
|
|
struct ufs_hba *hba;
|
|
int i;
|
|
int lun_qdepth = 0;
|
|
|
|
hba = shost_priv(cmd->device->host);
|
|
|
|
/*
|
|
* LUN queue depth can be obtained by counting outstanding commands
|
|
* on the LUN.
|
|
*/
|
|
for (i = 0; i < hba->nutrs; i++) {
|
|
if (test_bit(i, &hba->outstanding_reqs)) {
|
|
|
|
/*
|
|
* Check if the outstanding command belongs
|
|
* to the LUN which reported SAM_STAT_TASK_SET_FULL.
|
|
*/
|
|
if (cmd->device->lun == hba->lrb[i].lun)
|
|
lun_qdepth++;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* LUN queue depth will be total outstanding commands, except the
|
|
* command for which the LUN reported SAM_STAT_TASK_SET_FULL.
|
|
*/
|
|
scsi_adjust_queue_depth(cmd->device, MSG_SIMPLE_TAG, lun_qdepth - 1);
|
|
}
|
|
|
|
/**
|
|
* ufshcd_scsi_cmd_status - Update SCSI command result based on SCSI status
|
|
* @lrb: pointer to local reference block of completed command
|
|
* @scsi_status: SCSI command status
|
|
*
|
|
* Returns value base on SCSI command status
|
|
*/
|
|
static inline int
|
|
ufshcd_scsi_cmd_status(struct ufshcd_lrb *lrbp, int scsi_status)
|
|
{
|
|
int result = 0;
|
|
|
|
switch (scsi_status) {
|
|
case SAM_STAT_GOOD:
|
|
result |= DID_OK << 16 |
|
|
COMMAND_COMPLETE << 8 |
|
|
SAM_STAT_GOOD;
|
|
break;
|
|
case SAM_STAT_CHECK_CONDITION:
|
|
result |= DID_OK << 16 |
|
|
COMMAND_COMPLETE << 8 |
|
|
SAM_STAT_CHECK_CONDITION;
|
|
ufshcd_copy_sense_data(lrbp);
|
|
break;
|
|
case SAM_STAT_BUSY:
|
|
result |= SAM_STAT_BUSY;
|
|
break;
|
|
case SAM_STAT_TASK_SET_FULL:
|
|
|
|
/*
|
|
* If a LUN reports SAM_STAT_TASK_SET_FULL, then the LUN queue
|
|
* depth needs to be adjusted to the exact number of
|
|
* outstanding commands the LUN can handle at any given time.
|
|
*/
|
|
ufshcd_adjust_lun_qdepth(lrbp->cmd);
|
|
result |= SAM_STAT_TASK_SET_FULL;
|
|
break;
|
|
case SAM_STAT_TASK_ABORTED:
|
|
result |= SAM_STAT_TASK_ABORTED;
|
|
break;
|
|
default:
|
|
result |= DID_ERROR << 16;
|
|
break;
|
|
} /* end of switch */
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* ufshcd_transfer_rsp_status - Get overall status of the response
|
|
* @hba: per adapter instance
|
|
* @lrb: pointer to local reference block of completed command
|
|
*
|
|
* Returns result of the command to notify SCSI midlayer
|
|
*/
|
|
static inline int
|
|
ufshcd_transfer_rsp_status(struct ufs_hba *hba, struct ufshcd_lrb *lrbp)
|
|
{
|
|
int result = 0;
|
|
int scsi_status;
|
|
int ocs;
|
|
|
|
/* overall command status of utrd */
|
|
ocs = ufshcd_get_tr_ocs(lrbp);
|
|
|
|
switch (ocs) {
|
|
case OCS_SUCCESS:
|
|
|
|
/* check if the returned transfer response is valid */
|
|
result = ufshcd_is_valid_req_rsp(lrbp->ucd_rsp_ptr);
|
|
if (result) {
|
|
dev_err(&hba->pdev->dev,
|
|
"Invalid response = %x\n", result);
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* get the response UPIU result to extract
|
|
* the SCSI command status
|
|
*/
|
|
result = ufshcd_get_rsp_upiu_result(lrbp->ucd_rsp_ptr);
|
|
|
|
/*
|
|
* get the result based on SCSI status response
|
|
* to notify the SCSI midlayer of the command status
|
|
*/
|
|
scsi_status = result & MASK_SCSI_STATUS;
|
|
result = ufshcd_scsi_cmd_status(lrbp, scsi_status);
|
|
break;
|
|
case OCS_ABORTED:
|
|
result |= DID_ABORT << 16;
|
|
break;
|
|
case OCS_INVALID_CMD_TABLE_ATTR:
|
|
case OCS_INVALID_PRDT_ATTR:
|
|
case OCS_MISMATCH_DATA_BUF_SIZE:
|
|
case OCS_MISMATCH_RESP_UPIU_SIZE:
|
|
case OCS_PEER_COMM_FAILURE:
|
|
case OCS_FATAL_ERROR:
|
|
default:
|
|
result |= DID_ERROR << 16;
|
|
dev_err(&hba->pdev->dev,
|
|
"OCS error from controller = %x\n", ocs);
|
|
break;
|
|
} /* end of switch */
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* ufshcd_transfer_req_compl - handle SCSI and query command completion
|
|
* @hba: per adapter instance
|
|
*/
|
|
static void ufshcd_transfer_req_compl(struct ufs_hba *hba)
|
|
{
|
|
struct ufshcd_lrb *lrb;
|
|
unsigned long completed_reqs;
|
|
u32 tr_doorbell;
|
|
int result;
|
|
int index;
|
|
|
|
lrb = hba->lrb;
|
|
tr_doorbell =
|
|
readl(hba->mmio_base + REG_UTP_TRANSFER_REQ_DOOR_BELL);
|
|
completed_reqs = tr_doorbell ^ hba->outstanding_reqs;
|
|
|
|
for (index = 0; index < hba->nutrs; index++) {
|
|
if (test_bit(index, &completed_reqs)) {
|
|
|
|
result = ufshcd_transfer_rsp_status(hba, &lrb[index]);
|
|
|
|
if (lrb[index].cmd) {
|
|
scsi_dma_unmap(lrb[index].cmd);
|
|
lrb[index].cmd->result = result;
|
|
lrb[index].cmd->scsi_done(lrb[index].cmd);
|
|
|
|
/* Mark completed command as NULL in LRB */
|
|
lrb[index].cmd = NULL;
|
|
}
|
|
} /* end of if */
|
|
} /* end of for */
|
|
|
|
/* clear corresponding bits of completed commands */
|
|
hba->outstanding_reqs ^= completed_reqs;
|
|
|
|
/* Reset interrupt aggregation counters */
|
|
ufshcd_config_int_aggr(hba, INT_AGGR_RESET);
|
|
}
|
|
|
|
/**
|
|
* ufshcd_uic_cc_handler - handle UIC command completion
|
|
* @work: pointer to a work queue structure
|
|
*
|
|
* Returns 0 on success, non-zero value on failure
|
|
*/
|
|
static void ufshcd_uic_cc_handler (struct work_struct *work)
|
|
{
|
|
struct ufs_hba *hba;
|
|
|
|
hba = container_of(work, struct ufs_hba, uic_workq);
|
|
|
|
if ((hba->active_uic_cmd.command == UIC_CMD_DME_LINK_STARTUP) &&
|
|
!(ufshcd_get_uic_cmd_result(hba))) {
|
|
|
|
if (ufshcd_make_hba_operational(hba))
|
|
dev_err(&hba->pdev->dev,
|
|
"cc: hba not operational state\n");
|
|
return;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* ufshcd_fatal_err_handler - handle fatal errors
|
|
* @hba: per adapter instance
|
|
*/
|
|
static void ufshcd_fatal_err_handler(struct work_struct *work)
|
|
{
|
|
struct ufs_hba *hba;
|
|
hba = container_of(work, struct ufs_hba, feh_workq);
|
|
|
|
/* check if reset is already in progress */
|
|
if (hba->ufshcd_state != UFSHCD_STATE_RESET)
|
|
ufshcd_do_reset(hba);
|
|
}
|
|
|
|
/**
|
|
* ufshcd_err_handler - Check for fatal errors
|
|
* @work: pointer to a work queue structure
|
|
*/
|
|
static void ufshcd_err_handler(struct ufs_hba *hba)
|
|
{
|
|
u32 reg;
|
|
|
|
if (hba->errors & INT_FATAL_ERRORS)
|
|
goto fatal_eh;
|
|
|
|
if (hba->errors & UIC_ERROR) {
|
|
|
|
reg = readl(hba->mmio_base +
|
|
REG_UIC_ERROR_CODE_PHY_ADAPTER_LAYER);
|
|
if (reg & UIC_DATA_LINK_LAYER_ERROR_PA_INIT)
|
|
goto fatal_eh;
|
|
}
|
|
return;
|
|
fatal_eh:
|
|
hba->ufshcd_state = UFSHCD_STATE_ERROR;
|
|
schedule_work(&hba->feh_workq);
|
|
}
|
|
|
|
/**
|
|
* ufshcd_tmc_handler - handle task management function completion
|
|
* @hba: per adapter instance
|
|
*/
|
|
static void ufshcd_tmc_handler(struct ufs_hba *hba)
|
|
{
|
|
u32 tm_doorbell;
|
|
|
|
tm_doorbell = readl(hba->mmio_base + REG_UTP_TASK_REQ_DOOR_BELL);
|
|
hba->tm_condition = tm_doorbell ^ hba->outstanding_tasks;
|
|
wake_up_interruptible(&hba->ufshcd_tm_wait_queue);
|
|
}
|
|
|
|
/**
|
|
* ufshcd_sl_intr - Interrupt service routine
|
|
* @hba: per adapter instance
|
|
* @intr_status: contains interrupts generated by the controller
|
|
*/
|
|
static void ufshcd_sl_intr(struct ufs_hba *hba, u32 intr_status)
|
|
{
|
|
hba->errors = UFSHCD_ERROR_MASK & intr_status;
|
|
if (hba->errors)
|
|
ufshcd_err_handler(hba);
|
|
|
|
if (intr_status & UIC_COMMAND_COMPL)
|
|
schedule_work(&hba->uic_workq);
|
|
|
|
if (intr_status & UTP_TASK_REQ_COMPL)
|
|
ufshcd_tmc_handler(hba);
|
|
|
|
if (intr_status & UTP_TRANSFER_REQ_COMPL)
|
|
ufshcd_transfer_req_compl(hba);
|
|
}
|
|
|
|
/**
|
|
* ufshcd_intr - Main interrupt service routine
|
|
* @irq: irq number
|
|
* @__hba: pointer to adapter instance
|
|
*
|
|
* Returns IRQ_HANDLED - If interrupt is valid
|
|
* IRQ_NONE - If invalid interrupt
|
|
*/
|
|
static irqreturn_t ufshcd_intr(int irq, void *__hba)
|
|
{
|
|
u32 intr_status;
|
|
irqreturn_t retval = IRQ_NONE;
|
|
struct ufs_hba *hba = __hba;
|
|
|
|
spin_lock(hba->host->host_lock);
|
|
intr_status = readl(hba->mmio_base + REG_INTERRUPT_STATUS);
|
|
|
|
if (intr_status) {
|
|
ufshcd_sl_intr(hba, intr_status);
|
|
|
|
/* If UFSHCI 1.0 then clear interrupt status register */
|
|
if (hba->ufs_version == UFSHCI_VERSION_10)
|
|
writel(intr_status,
|
|
(hba->mmio_base + REG_INTERRUPT_STATUS));
|
|
retval = IRQ_HANDLED;
|
|
}
|
|
spin_unlock(hba->host->host_lock);
|
|
return retval;
|
|
}
|
|
|
|
/**
|
|
* ufshcd_issue_tm_cmd - issues task management commands to controller
|
|
* @hba: per adapter instance
|
|
* @lrbp: pointer to local reference block
|
|
*
|
|
* Returns SUCCESS/FAILED
|
|
*/
|
|
static int
|
|
ufshcd_issue_tm_cmd(struct ufs_hba *hba,
|
|
struct ufshcd_lrb *lrbp,
|
|
u8 tm_function)
|
|
{
|
|
struct utp_task_req_desc *task_req_descp;
|
|
struct utp_upiu_task_req *task_req_upiup;
|
|
struct Scsi_Host *host;
|
|
unsigned long flags;
|
|
int free_slot = 0;
|
|
int err;
|
|
|
|
host = hba->host;
|
|
|
|
spin_lock_irqsave(host->host_lock, flags);
|
|
|
|
/* If task management queue is full */
|
|
free_slot = ufshcd_get_tm_free_slot(hba);
|
|
if (free_slot >= hba->nutmrs) {
|
|
spin_unlock_irqrestore(host->host_lock, flags);
|
|
dev_err(&hba->pdev->dev, "Task management queue full\n");
|
|
err = FAILED;
|
|
goto out;
|
|
}
|
|
|
|
task_req_descp = hba->utmrdl_base_addr;
|
|
task_req_descp += free_slot;
|
|
|
|
/* Configure task request descriptor */
|
|
task_req_descp->header.dword_0 = cpu_to_le32(UTP_REQ_DESC_INT_CMD);
|
|
task_req_descp->header.dword_2 =
|
|
cpu_to_le32(OCS_INVALID_COMMAND_STATUS);
|
|
|
|
/* Configure task request UPIU */
|
|
task_req_upiup =
|
|
(struct utp_upiu_task_req *) task_req_descp->task_req_upiu;
|
|
task_req_upiup->header.dword_0 =
|
|
cpu_to_be32(UPIU_HEADER_DWORD(UPIU_TRANSACTION_TASK_REQ, 0,
|
|
lrbp->lun, lrbp->task_tag));
|
|
task_req_upiup->header.dword_1 =
|
|
cpu_to_be32(UPIU_HEADER_DWORD(0, tm_function, 0, 0));
|
|
|
|
task_req_upiup->input_param1 = lrbp->lun;
|
|
task_req_upiup->input_param1 =
|
|
cpu_to_be32(task_req_upiup->input_param1);
|
|
task_req_upiup->input_param2 = lrbp->task_tag;
|
|
task_req_upiup->input_param2 =
|
|
cpu_to_be32(task_req_upiup->input_param2);
|
|
|
|
/* send command to the controller */
|
|
__set_bit(free_slot, &hba->outstanding_tasks);
|
|
writel((1 << free_slot),
|
|
(hba->mmio_base + REG_UTP_TASK_REQ_DOOR_BELL));
|
|
|
|
spin_unlock_irqrestore(host->host_lock, flags);
|
|
|
|
/* wait until the task management command is completed */
|
|
err =
|
|
wait_event_interruptible_timeout(hba->ufshcd_tm_wait_queue,
|
|
(test_bit(free_slot,
|
|
&hba->tm_condition) != 0),
|
|
60 * HZ);
|
|
if (!err) {
|
|
dev_err(&hba->pdev->dev,
|
|
"Task management command timed-out\n");
|
|
err = FAILED;
|
|
goto out;
|
|
}
|
|
clear_bit(free_slot, &hba->tm_condition);
|
|
err = ufshcd_task_req_compl(hba, free_slot);
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* ufshcd_device_reset - reset device and abort all the pending commands
|
|
* @cmd: SCSI command pointer
|
|
*
|
|
* Returns SUCCESS/FAILED
|
|
*/
|
|
static int ufshcd_device_reset(struct scsi_cmnd *cmd)
|
|
{
|
|
struct Scsi_Host *host;
|
|
struct ufs_hba *hba;
|
|
unsigned int tag;
|
|
u32 pos;
|
|
int err;
|
|
|
|
host = cmd->device->host;
|
|
hba = shost_priv(host);
|
|
tag = cmd->request->tag;
|
|
|
|
err = ufshcd_issue_tm_cmd(hba, &hba->lrb[tag], UFS_LOGICAL_RESET);
|
|
if (err == FAILED)
|
|
goto out;
|
|
|
|
for (pos = 0; pos < hba->nutrs; pos++) {
|
|
if (test_bit(pos, &hba->outstanding_reqs) &&
|
|
(hba->lrb[tag].lun == hba->lrb[pos].lun)) {
|
|
|
|
/* clear the respective UTRLCLR register bit */
|
|
ufshcd_utrl_clear(hba, pos);
|
|
|
|
clear_bit(pos, &hba->outstanding_reqs);
|
|
|
|
if (hba->lrb[pos].cmd) {
|
|
scsi_dma_unmap(hba->lrb[pos].cmd);
|
|
hba->lrb[pos].cmd->result =
|
|
DID_ABORT << 16;
|
|
hba->lrb[pos].cmd->scsi_done(cmd);
|
|
hba->lrb[pos].cmd = NULL;
|
|
}
|
|
}
|
|
} /* end of for */
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* ufshcd_host_reset - Main reset function registered with scsi layer
|
|
* @cmd: SCSI command pointer
|
|
*
|
|
* Returns SUCCESS/FAILED
|
|
*/
|
|
static int ufshcd_host_reset(struct scsi_cmnd *cmd)
|
|
{
|
|
struct ufs_hba *hba;
|
|
|
|
hba = shost_priv(cmd->device->host);
|
|
|
|
if (hba->ufshcd_state == UFSHCD_STATE_RESET)
|
|
return SUCCESS;
|
|
|
|
return ufshcd_do_reset(hba);
|
|
}
|
|
|
|
/**
|
|
* ufshcd_abort - abort a specific command
|
|
* @cmd: SCSI command pointer
|
|
*
|
|
* Returns SUCCESS/FAILED
|
|
*/
|
|
static int ufshcd_abort(struct scsi_cmnd *cmd)
|
|
{
|
|
struct Scsi_Host *host;
|
|
struct ufs_hba *hba;
|
|
unsigned long flags;
|
|
unsigned int tag;
|
|
int err;
|
|
|
|
host = cmd->device->host;
|
|
hba = shost_priv(host);
|
|
tag = cmd->request->tag;
|
|
|
|
spin_lock_irqsave(host->host_lock, flags);
|
|
|
|
/* check if command is still pending */
|
|
if (!(test_bit(tag, &hba->outstanding_reqs))) {
|
|
err = FAILED;
|
|
spin_unlock_irqrestore(host->host_lock, flags);
|
|
goto out;
|
|
}
|
|
spin_unlock_irqrestore(host->host_lock, flags);
|
|
|
|
err = ufshcd_issue_tm_cmd(hba, &hba->lrb[tag], UFS_ABORT_TASK);
|
|
if (err == FAILED)
|
|
goto out;
|
|
|
|
scsi_dma_unmap(cmd);
|
|
|
|
spin_lock_irqsave(host->host_lock, flags);
|
|
|
|
/* clear the respective UTRLCLR register bit */
|
|
ufshcd_utrl_clear(hba, tag);
|
|
|
|
__clear_bit(tag, &hba->outstanding_reqs);
|
|
hba->lrb[tag].cmd = NULL;
|
|
spin_unlock_irqrestore(host->host_lock, flags);
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
static struct scsi_host_template ufshcd_driver_template = {
|
|
.module = THIS_MODULE,
|
|
.name = UFSHCD,
|
|
.proc_name = UFSHCD,
|
|
.queuecommand = ufshcd_queuecommand,
|
|
.slave_alloc = ufshcd_slave_alloc,
|
|
.slave_destroy = ufshcd_slave_destroy,
|
|
.eh_abort_handler = ufshcd_abort,
|
|
.eh_device_reset_handler = ufshcd_device_reset,
|
|
.eh_host_reset_handler = ufshcd_host_reset,
|
|
.this_id = -1,
|
|
.sg_tablesize = SG_ALL,
|
|
.cmd_per_lun = UFSHCD_CMD_PER_LUN,
|
|
.can_queue = UFSHCD_CAN_QUEUE,
|
|
};
|
|
|
|
/**
|
|
* ufshcd_shutdown - main function to put the controller in reset state
|
|
* @pdev: pointer to PCI device handle
|
|
*/
|
|
static void ufshcd_shutdown(struct pci_dev *pdev)
|
|
{
|
|
ufshcd_hba_stop((struct ufs_hba *)pci_get_drvdata(pdev));
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
/**
|
|
* ufshcd_suspend - suspend power management function
|
|
* @pdev: pointer to PCI device handle
|
|
* @state: power state
|
|
*
|
|
* Returns -ENOSYS
|
|
*/
|
|
static int ufshcd_suspend(struct pci_dev *pdev, pm_message_t state)
|
|
{
|
|
/*
|
|
* TODO:
|
|
* 1. Block SCSI requests from SCSI midlayer
|
|
* 2. Change the internal driver state to non operational
|
|
* 3. Set UTRLRSR and UTMRLRSR bits to zero
|
|
* 4. Wait until outstanding commands are completed
|
|
* 5. Set HCE to zero to send the UFS host controller to reset state
|
|
*/
|
|
|
|
return -ENOSYS;
|
|
}
|
|
|
|
/**
|
|
* ufshcd_resume - resume power management function
|
|
* @pdev: pointer to PCI device handle
|
|
*
|
|
* Returns -ENOSYS
|
|
*/
|
|
static int ufshcd_resume(struct pci_dev *pdev)
|
|
{
|
|
/*
|
|
* TODO:
|
|
* 1. Set HCE to 1, to start the UFS host controller
|
|
* initialization process
|
|
* 2. Set UTRLRSR and UTMRLRSR bits to 1
|
|
* 3. Change the internal driver state to operational
|
|
* 4. Unblock SCSI requests from SCSI midlayer
|
|
*/
|
|
|
|
return -ENOSYS;
|
|
}
|
|
#endif /* CONFIG_PM */
|
|
|
|
/**
|
|
* ufshcd_hba_free - free allocated memory for
|
|
* host memory space data structures
|
|
* @hba: per adapter instance
|
|
*/
|
|
static void ufshcd_hba_free(struct ufs_hba *hba)
|
|
{
|
|
iounmap(hba->mmio_base);
|
|
ufshcd_free_hba_memory(hba);
|
|
pci_release_regions(hba->pdev);
|
|
}
|
|
|
|
/**
|
|
* ufshcd_remove - de-allocate PCI/SCSI host and host memory space
|
|
* data structure memory
|
|
* @pdev - pointer to PCI handle
|
|
*/
|
|
static void ufshcd_remove(struct pci_dev *pdev)
|
|
{
|
|
struct ufs_hba *hba = pci_get_drvdata(pdev);
|
|
|
|
/* disable interrupts */
|
|
ufshcd_int_config(hba, UFSHCD_INT_DISABLE);
|
|
free_irq(pdev->irq, hba);
|
|
|
|
ufshcd_hba_stop(hba);
|
|
ufshcd_hba_free(hba);
|
|
|
|
scsi_remove_host(hba->host);
|
|
scsi_host_put(hba->host);
|
|
pci_set_drvdata(pdev, NULL);
|
|
pci_clear_master(pdev);
|
|
pci_disable_device(pdev);
|
|
}
|
|
|
|
/**
|
|
* ufshcd_set_dma_mask - Set dma mask based on the controller
|
|
* addressing capability
|
|
* @pdev: PCI device structure
|
|
*
|
|
* Returns 0 for success, non-zero for failure
|
|
*/
|
|
static int ufshcd_set_dma_mask(struct ufs_hba *hba)
|
|
{
|
|
int err;
|
|
u64 dma_mask;
|
|
|
|
/*
|
|
* If controller supports 64 bit addressing mode, then set the DMA
|
|
* mask to 64-bit, else set the DMA mask to 32-bit
|
|
*/
|
|
if (hba->capabilities & MASK_64_ADDRESSING_SUPPORT)
|
|
dma_mask = DMA_BIT_MASK(64);
|
|
else
|
|
dma_mask = DMA_BIT_MASK(32);
|
|
|
|
err = pci_set_dma_mask(hba->pdev, dma_mask);
|
|
if (err)
|
|
return err;
|
|
|
|
err = pci_set_consistent_dma_mask(hba->pdev, dma_mask);
|
|
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* ufshcd_probe - probe routine of the driver
|
|
* @pdev: pointer to PCI device handle
|
|
* @id: PCI device id
|
|
*
|
|
* Returns 0 on success, non-zero value on failure
|
|
*/
|
|
static int __devinit
|
|
ufshcd_probe(struct pci_dev *pdev, const struct pci_device_id *id)
|
|
{
|
|
struct Scsi_Host *host;
|
|
struct ufs_hba *hba;
|
|
int err;
|
|
|
|
err = pci_enable_device(pdev);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "pci_enable_device failed\n");
|
|
goto out_error;
|
|
}
|
|
|
|
pci_set_master(pdev);
|
|
|
|
host = scsi_host_alloc(&ufshcd_driver_template,
|
|
sizeof(struct ufs_hba));
|
|
if (!host) {
|
|
dev_err(&pdev->dev, "scsi_host_alloc failed\n");
|
|
err = -ENOMEM;
|
|
goto out_disable;
|
|
}
|
|
hba = shost_priv(host);
|
|
|
|
err = pci_request_regions(pdev, UFSHCD);
|
|
if (err < 0) {
|
|
dev_err(&pdev->dev, "request regions failed\n");
|
|
goto out_host_put;
|
|
}
|
|
|
|
hba->mmio_base = pci_ioremap_bar(pdev, 0);
|
|
if (!hba->mmio_base) {
|
|
dev_err(&pdev->dev, "memory map failed\n");
|
|
err = -ENOMEM;
|
|
goto out_release_regions;
|
|
}
|
|
|
|
hba->host = host;
|
|
hba->pdev = pdev;
|
|
|
|
/* Read capabilities registers */
|
|
ufshcd_hba_capabilities(hba);
|
|
|
|
/* Get UFS version supported by the controller */
|
|
hba->ufs_version = ufshcd_get_ufs_version(hba);
|
|
|
|
err = ufshcd_set_dma_mask(hba);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "set dma mask failed\n");
|
|
goto out_iounmap;
|
|
}
|
|
|
|
/* Allocate memory for host memory space */
|
|
err = ufshcd_memory_alloc(hba);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "Memory allocation failed\n");
|
|
goto out_iounmap;
|
|
}
|
|
|
|
/* Configure LRB */
|
|
ufshcd_host_memory_configure(hba);
|
|
|
|
host->can_queue = hba->nutrs;
|
|
host->cmd_per_lun = hba->nutrs;
|
|
host->max_id = UFSHCD_MAX_ID;
|
|
host->max_lun = UFSHCD_MAX_LUNS;
|
|
host->max_channel = UFSHCD_MAX_CHANNEL;
|
|
host->unique_id = host->host_no;
|
|
host->max_cmd_len = MAX_CDB_SIZE;
|
|
|
|
/* Initailize wait queue for task management */
|
|
init_waitqueue_head(&hba->ufshcd_tm_wait_queue);
|
|
|
|
/* Initialize work queues */
|
|
INIT_WORK(&hba->uic_workq, ufshcd_uic_cc_handler);
|
|
INIT_WORK(&hba->feh_workq, ufshcd_fatal_err_handler);
|
|
|
|
/* IRQ registration */
|
|
err = request_irq(pdev->irq, ufshcd_intr, IRQF_SHARED, UFSHCD, hba);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "request irq failed\n");
|
|
goto out_lrb_free;
|
|
}
|
|
|
|
/* Enable SCSI tag mapping */
|
|
err = scsi_init_shared_tag_map(host, host->can_queue);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "init shared queue failed\n");
|
|
goto out_free_irq;
|
|
}
|
|
|
|
pci_set_drvdata(pdev, hba);
|
|
|
|
err = scsi_add_host(host, &pdev->dev);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "scsi_add_host failed\n");
|
|
goto out_free_irq;
|
|
}
|
|
|
|
/* Initialization routine */
|
|
err = ufshcd_initialize_hba(hba);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "Initialization failed\n");
|
|
goto out_free_irq;
|
|
}
|
|
|
|
return 0;
|
|
|
|
out_free_irq:
|
|
free_irq(pdev->irq, hba);
|
|
out_lrb_free:
|
|
ufshcd_free_hba_memory(hba);
|
|
out_iounmap:
|
|
iounmap(hba->mmio_base);
|
|
out_release_regions:
|
|
pci_release_regions(pdev);
|
|
out_host_put:
|
|
scsi_host_put(host);
|
|
out_disable:
|
|
pci_clear_master(pdev);
|
|
pci_disable_device(pdev);
|
|
out_error:
|
|
return err;
|
|
}
|
|
|
|
static DEFINE_PCI_DEVICE_TABLE(ufshcd_pci_tbl) = {
|
|
{ PCI_VENDOR_ID_SAMSUNG, 0xC00C, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
|
|
{ } /* terminate list */
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(pci, ufshcd_pci_tbl);
|
|
|
|
static struct pci_driver ufshcd_pci_driver = {
|
|
.name = UFSHCD,
|
|
.id_table = ufshcd_pci_tbl,
|
|
.probe = ufshcd_probe,
|
|
.remove = __devexit_p(ufshcd_remove),
|
|
.shutdown = ufshcd_shutdown,
|
|
#ifdef CONFIG_PM
|
|
.suspend = ufshcd_suspend,
|
|
.resume = ufshcd_resume,
|
|
#endif
|
|
};
|
|
|
|
module_pci_driver(ufshcd_pci_driver);
|
|
|
|
MODULE_AUTHOR("Santosh Yaragnavi <santosh.sy@samsung.com>, "
|
|
"Vinayak Holikatti <h.vinayak@samsung.com>");
|
|
MODULE_DESCRIPTION("Generic UFS host controller driver");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_VERSION(UFSHCD_DRIVER_VERSION);
|