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/*
* Copyright (c) 2015 Linaro Ltd.
* Copyright (c) 2015 Hisilicon Limited.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
*/
#ifndef _HISI_SAS_H_
#define _HISI_SAS_H_
#include <linux/dmapool.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <scsi/libsas.h>
#define DRV_VERSION "v1.0"
#define HISI_SAS_MAX_PHYS 9
#define HISI_SAS_MAX_QUEUES 32
#define HISI_SAS_QUEUE_SLOTS 512
#define HISI_SAS_MAX_ITCT_ENTRIES 4096
#define HISI_SAS_MAX_DEVICES HISI_SAS_MAX_ITCT_ENTRIES
#define HISI_SAS_COMMAND_ENTRIES 8192
#define HISI_SAS_STATUS_BUF_SZ \
(sizeof(struct hisi_sas_err_record) + 1024)
#define HISI_SAS_COMMAND_TABLE_SZ \
(((sizeof(union hisi_sas_command_table)+3)/4)*4)
#define HISI_SAS_NAME_LEN 32
struct hisi_sas_phy {
struct asd_sas_phy sas_phy;
};
struct hisi_sas_port {
struct asd_sas_port sas_port;
};
struct hisi_sas_slot {
};
struct hisi_sas_hw {
int complete_hdr_size;
};
struct hisi_hba {
/* This must be the first element, used by SHOST_TO_SAS_HA */
struct sas_ha_struct *p;
struct platform_device *pdev;
void __iomem *regs;
struct regmap *ctrl;
u32 ctrl_reset_reg;
u32 ctrl_reset_sts_reg;
u32 ctrl_clock_ena_reg;
u8 sas_addr[SAS_ADDR_SIZE];
int n_phy;
/* SCSI/SAS glue */
struct sas_ha_struct sha;
struct Scsi_Host *shost;
struct hisi_sas_phy phy[HISI_SAS_MAX_PHYS];
struct hisi_sas_port port[HISI_SAS_MAX_PHYS];
int queue_count;
char *int_names;
struct dma_pool *sge_page_pool;
struct dma_pool *command_table_pool;
struct dma_pool *status_buffer_pool;
struct hisi_sas_cmd_hdr *cmd_hdr[HISI_SAS_MAX_QUEUES];
dma_addr_t cmd_hdr_dma[HISI_SAS_MAX_QUEUES];
void *complete_hdr[HISI_SAS_MAX_QUEUES];
dma_addr_t complete_hdr_dma[HISI_SAS_MAX_QUEUES];
struct hisi_sas_initial_fis *initial_fis;
dma_addr_t initial_fis_dma;
struct hisi_sas_itct *itct;
dma_addr_t itct_dma;
struct hisi_sas_iost *iost;
dma_addr_t iost_dma;
struct hisi_sas_breakpoint *breakpoint;
dma_addr_t breakpoint_dma;
struct hisi_sas_breakpoint *sata_breakpoint;
dma_addr_t sata_breakpoint_dma;
struct hisi_sas_slot *slot_info;
const struct hisi_sas_hw *hw; /* Low level hw interface */
};
/* Generic HW DMA host memory structures */
/* Delivery queue header */
struct hisi_sas_cmd_hdr {
/* dw0 */
__le32 dw0;
/* dw1 */
__le32 dw1;
/* dw2 */
__le32 dw2;
/* dw3 */
__le32 transfer_tags;
/* dw4 */
__le32 data_transfer_len;
/* dw5 */
__le32 first_burst_num;
/* dw6 */
__le32 sg_len;
/* dw7 */
__le32 dw7;
/* dw8-9 */
__le64 cmd_table_addr;
/* dw10-11 */
__le64 sts_buffer_addr;
/* dw12-13 */
__le64 prd_table_addr;
/* dw14-15 */
__le64 dif_prd_table_addr;
};
struct hisi_sas_itct {
__le64 qw0;
__le64 sas_addr;
__le64 qw2;
__le64 qw3;
__le64 qw4;
__le64 qw_sata_ncq0_3;
__le64 qw_sata_ncq7_4;
__le64 qw_sata_ncq11_8;
__le64 qw_sata_ncq15_12;
__le64 qw_sata_ncq19_16;
__le64 qw_sata_ncq23_20;
__le64 qw_sata_ncq27_24;
__le64 qw_sata_ncq31_28;
__le64 qw_non_ncq_iptt;
__le64 qw_rsvd0;
__le64 qw_rsvd1;
};
struct hisi_sas_iost {
__le64 qw0;
__le64 qw1;
__le64 qw2;
__le64 qw3;
};
struct hisi_sas_err_record {
/* dw0 */
__le32 dma_err_type;
/* dw1 */
__le32 trans_tx_fail_type;
/* dw2 */
__le32 trans_rx_fail_type;
/* dw3 */
u32 rsvd;
};
struct hisi_sas_initial_fis {
struct hisi_sas_err_record err_record;
struct dev_to_host_fis fis;
u32 rsvd[3];
};
struct hisi_sas_breakpoint {
u8 data[128]; /*io128 byte*/
};
struct hisi_sas_sge {
__le64 addr;
__le32 page_ctrl_0;
__le32 page_ctrl_1;
__le32 data_len;
__le32 data_off;
};
struct hisi_sas_command_table_smp {
u8 bytes[44];
};
struct hisi_sas_command_table_stp {
struct host_to_dev_fis command_fis;
u8 dummy[12];
u8 atapi_cdb[ATAPI_CDB_LEN];
};
#define HISI_SAS_SGE_PAGE_CNT SCSI_MAX_SG_SEGMENTS
struct hisi_sas_sge_page {
struct hisi_sas_sge sge[HISI_SAS_SGE_PAGE_CNT];
};
struct hisi_sas_command_table_ssp {
struct ssp_frame_hdr hdr;
union {
struct {
struct ssp_command_iu task;
u32 prot[6];
};
struct ssp_tmf_iu ssp_task;
struct xfer_rdy_iu xfer_rdy;
struct ssp_response_iu ssp_res;
} u;
};
union hisi_sas_command_table {
struct hisi_sas_command_table_ssp ssp;
struct hisi_sas_command_table_smp smp;
struct hisi_sas_command_table_stp stp;
};
#endif
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