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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/acpi.h>
#include <linux/clk.h>
#include <linux/dmapool.h>
#include <linux/iopoll.h>
#include <linux/lcm.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/of_address.h>
#include <linux/pci.h>
#include <linux/platform_device.h>
#include <linux/property.h>
#include <linux/regmap.h>
#include <scsi/sas_ata.h>
#include <scsi/libsas.h>
#define HISI_SAS_MAX_PHYS 9
#define HISI_SAS_MAX_QUEUES 32
#define HISI_SAS_QUEUE_SLOTS 512
#define HISI_SAS_MAX_ITCT_ENTRIES 1024
#define HISI_SAS_MAX_DEVICES HISI_SAS_MAX_ITCT_ENTRIES
#define HISI_SAS_RESET_BIT 0
#define HISI_SAS_REJECT_CMD_BIT 1
#define HISI_SAS_RESERVED_IPTT_CNT 96
#define HISI_SAS_STATUS_BUF_SZ (sizeof(struct hisi_sas_status_buffer))
#define HISI_SAS_COMMAND_TABLE_SZ (sizeof(union hisi_sas_command_table))
#define hisi_sas_status_buf_addr(buf) \
(buf + offsetof(struct hisi_sas_slot_buf_table, status_buffer))
#define hisi_sas_status_buf_addr_mem(slot) hisi_sas_status_buf_addr(slot->buf)
#define hisi_sas_status_buf_addr_dma(slot) \
hisi_sas_status_buf_addr(slot->buf_dma)
#define hisi_sas_cmd_hdr_addr(buf) \
(buf + offsetof(struct hisi_sas_slot_buf_table, command_header))
#define hisi_sas_cmd_hdr_addr_mem(slot) hisi_sas_cmd_hdr_addr(slot->buf)
#define hisi_sas_cmd_hdr_addr_dma(slot) hisi_sas_cmd_hdr_addr(slot->buf_dma)
#define hisi_sas_sge_addr(buf) \
(buf + offsetof(struct hisi_sas_slot_buf_table, sge_page))
#define hisi_sas_sge_addr_mem(slot) hisi_sas_sge_addr(slot->buf)
#define hisi_sas_sge_addr_dma(slot) hisi_sas_sge_addr(slot->buf_dma)
#define HISI_SAS_MAX_SSP_RESP_SZ (sizeof(struct ssp_frame_hdr) + 1024)
#define HISI_SAS_MAX_SMP_RESP_SZ 1028
#define HISI_SAS_MAX_STP_RESP_SZ 28
#define DEV_IS_EXPANDER(type) \
((type == SAS_EDGE_EXPANDER_DEVICE) || \
(type == SAS_FANOUT_EXPANDER_DEVICE))
#define HISI_SAS_SATA_PROTOCOL_NONDATA 0x1
#define HISI_SAS_SATA_PROTOCOL_PIO 0x2
#define HISI_SAS_SATA_PROTOCOL_DMA 0x4
#define HISI_SAS_SATA_PROTOCOL_FPDMA 0x8
#define HISI_SAS_SATA_PROTOCOL_ATAPI 0x10
#define HISI_SAS_DIF_PROT_MASK (SHOST_DIF_TYPE1_PROTECTION | \
SHOST_DIF_TYPE2_PROTECTION | \
SHOST_DIF_TYPE3_PROTECTION)
#define HISI_SAS_PROT_MASK (HISI_SAS_DIF_PROT_MASK)
struct hisi_hba;
enum {
PORT_TYPE_SAS = (1U << 1),
PORT_TYPE_SATA = (1U << 0),
};
enum dev_status {
HISI_SAS_DEV_NORMAL,
HISI_SAS_DEV_EH,
};
enum {
HISI_SAS_INT_ABT_CMD = 0,
HISI_SAS_INT_ABT_DEV = 1,
};
enum hisi_sas_dev_type {
HISI_SAS_DEV_TYPE_STP = 0,
HISI_SAS_DEV_TYPE_SSP,
HISI_SAS_DEV_TYPE_SATA,
};
struct hisi_sas_hw_error {
u32 irq_msk;
u32 msk;
int shift;
const char *msg;
int reg;
const struct hisi_sas_hw_error *sub;
};
struct hisi_sas_rst {
struct hisi_hba *hisi_hba;
struct completion *completion;
struct work_struct work;
bool done;
};
#define HISI_SAS_RST_WORK_INIT(r, c) \
{ .hisi_hba = hisi_hba, \
.completion = &c, \
.work = __WORK_INITIALIZER(r.work, \
hisi_sas_sync_rst_work_handler), \
.done = false, \
}
#define HISI_SAS_DECLARE_RST_WORK_ON_STACK(r) \
DECLARE_COMPLETION_ONSTACK(c); \
DECLARE_WORK(w, hisi_sas_sync_rst_work_handler); \
struct hisi_sas_rst r = HISI_SAS_RST_WORK_INIT(r, c)
enum hisi_sas_bit_err_type {
HISI_SAS_ERR_SINGLE_BIT_ECC = 0x0,
HISI_SAS_ERR_MULTI_BIT_ECC = 0x1,
};
enum hisi_sas_phy_event {
HISI_PHYE_PHY_UP = 0U,
HISI_PHYE_LINK_RESET,
HISI_PHYES_NUM,
};
struct hisi_sas_phy {
struct work_struct works[HISI_PHYES_NUM];
struct hisi_hba *hisi_hba;
struct hisi_sas_port *port;
struct asd_sas_phy sas_phy;
struct sas_identify identify;
struct completion *reset_completion;
spinlock_t lock;
u64 port_id; /* from hw */
u64 frame_rcvd_size;
u8 frame_rcvd[32];
u8 phy_attached;
u8 in_reset;
u8 reserved[2];
u32 phy_type;
enum sas_linkrate minimum_linkrate;
enum sas_linkrate maximum_linkrate;
};
struct hisi_sas_port {
struct asd_sas_port sas_port;
u8 port_attached;
u8 id; /* from hw */
};
struct hisi_sas_cq {
struct hisi_hba *hisi_hba;
struct tasklet_struct tasklet;
int rd_point;
int id;
};
struct hisi_sas_dq {
struct hisi_hba *hisi_hba;
struct list_head list;
spinlock_t lock;
int wr_point;
int id;
};
struct hisi_sas_device {
struct hisi_hba *hisi_hba;
struct domain_device *sas_device;
struct completion *completion;
struct hisi_sas_dq *dq;
struct list_head list;
enum sas_device_type dev_type;
int device_id;
int sata_idx;
u8 dev_status;
};
struct hisi_sas_tmf_task {
int force_phy;
int phy_id;
u8 tmf;
u16 tag_of_task_to_be_managed;
};
struct hisi_sas_slot {
struct list_head entry;
struct list_head delivery;
struct sas_task *task;
struct hisi_sas_port *port;
u64 n_elem;
int dlvry_queue;
int dlvry_queue_slot;
int cmplt_queue;
int cmplt_queue_slot;
int abort;
int ready;
void *cmd_hdr;
dma_addr_t cmd_hdr_dma;
struct timer_list internal_abort_timer;
bool is_internal;
struct hisi_sas_tmf_task *tmf;
/* Do not reorder/change members after here */
void *buf;
dma_addr_t buf_dma;
u16 idx;
};
struct hisi_sas_hw {
int (*hw_init)(struct hisi_hba *hisi_hba);
void (*setup_itct)(struct hisi_hba *hisi_hba,
struct hisi_sas_device *device);
int (*slot_index_alloc)(struct hisi_hba *hisi_hba,
struct domain_device *device);
struct hisi_sas_device *(*alloc_dev)(struct domain_device *device);
void (*sl_notify)(struct hisi_hba *hisi_hba, int phy_no);
int (*get_free_slot)(struct hisi_hba *hisi_hba, struct hisi_sas_dq *dq);
void (*start_delivery)(struct hisi_sas_dq *dq);
void (*prep_ssp)(struct hisi_hba *hisi_hba,
struct hisi_sas_slot *slot);
void (*prep_smp)(struct hisi_hba *hisi_hba,
struct hisi_sas_slot *slot);
void (*prep_stp)(struct hisi_hba *hisi_hba,
struct hisi_sas_slot *slot);
void (*prep_abort)(struct hisi_hba *hisi_hba,
struct hisi_sas_slot *slot,
int device_id, int abort_flag, int tag_to_abort);
int (*slot_complete)(struct hisi_hba *hisi_hba,
struct hisi_sas_slot *slot);
void (*phys_init)(struct hisi_hba *hisi_hba);
void (*phy_start)(struct hisi_hba *hisi_hba, int phy_no);
void (*phy_disable)(struct hisi_hba *hisi_hba, int phy_no);
void (*phy_hard_reset)(struct hisi_hba *hisi_hba, int phy_no);
void (*get_events)(struct hisi_hba *hisi_hba, int phy_no);
void (*phy_set_linkrate)(struct hisi_hba *hisi_hba, int phy_no,
struct sas_phy_linkrates *linkrates);
enum sas_linkrate (*phy_get_max_linkrate)(void);
void (*clear_itct)(struct hisi_hba *hisi_hba,
struct hisi_sas_device *dev);
void (*free_device)(struct hisi_sas_device *sas_dev);
int (*get_wideport_bitmap)(struct hisi_hba *hisi_hba, int port_id);
void (*dereg_device)(struct hisi_hba *hisi_hba,
struct domain_device *device);
int (*soft_reset)(struct hisi_hba *hisi_hba);
u32 (*get_phys_state)(struct hisi_hba *hisi_hba);
int (*write_gpio)(struct hisi_hba *hisi_hba, u8 reg_type,
u8 reg_index, u8 reg_count, u8 *write_data);
void (*wait_cmds_complete_timeout)(struct hisi_hba *hisi_hba,
int delay_ms, int timeout_ms);
int max_command_entries;
int complete_hdr_size;
struct scsi_host_template *sht;
};
struct hisi_hba {
/* This must be the first element, used by SHOST_TO_SAS_HA */
struct sas_ha_struct *p;
struct platform_device *platform_dev;
struct pci_dev *pci_dev;
struct device *dev;
int prot_mask;
void __iomem *regs;
void __iomem *sgpio_regs;
struct regmap *ctrl;
u32 ctrl_reset_reg;
u32 ctrl_reset_sts_reg;
u32 ctrl_clock_ena_reg;
u32 refclk_frequency_mhz;
u8 sas_addr[SAS_ADDR_SIZE];
int n_phy;
spinlock_t lock;
struct semaphore sem;
struct timer_list timer;
struct workqueue_struct *wq;
int slot_index_count;
int last_slot_index;
int last_dev_id;
unsigned long *slot_index_tags;
unsigned long reject_stp_links_msk;
/* SCSI/SAS glue */
struct sas_ha_struct sha;
struct Scsi_Host *shost;
struct hisi_sas_cq cq[HISI_SAS_MAX_QUEUES];
struct hisi_sas_dq dq[HISI_SAS_MAX_QUEUES];
struct hisi_sas_phy phy[HISI_SAS_MAX_PHYS];
struct hisi_sas_port port[HISI_SAS_MAX_PHYS];
int queue_count;
struct hisi_sas_device devices[HISI_SAS_MAX_DEVICES];
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;
unsigned long flags;
const struct hisi_sas_hw *hw; /* Low level hw interface */
unsigned long sata_dev_bitmap[BITS_TO_LONGS(HISI_SAS_MAX_DEVICES)];
struct work_struct rst_work;
u32 phy_state;
u32 intr_coal_ticks; /* Time of interrupt coalesce in us */
u32 intr_coal_count; /* Interrupt count to coalesce */
};
/* 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_15[12];
};
struct hisi_sas_iost {
__le64 qw0;
__le64 qw1;
__le64 qw2;
__le64 qw3;
};
struct hisi_sas_err_record {
u32 data[4];
};
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];
};
struct hisi_sas_sata_breakpoint {
struct hisi_sas_breakpoint tag[32];
};
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 SG_CHUNK_SIZE
struct hisi_sas_sge_page {
struct hisi_sas_sge sge[HISI_SAS_SGE_PAGE_CNT];
} __aligned(16);
struct hisi_sas_command_table_ssp {
struct ssp_frame_hdr hdr;
union {
struct {
struct ssp_command_iu task;
u32 prot[7];
};
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;
} __aligned(16);
struct hisi_sas_status_buffer {
struct hisi_sas_err_record err;
u8 iu[1024];
} __aligned(16);
struct hisi_sas_slot_buf_table {
struct hisi_sas_status_buffer status_buffer;
union hisi_sas_command_table command_header;
struct hisi_sas_sge_page sge_page;
};
extern struct scsi_transport_template *hisi_sas_stt;
extern void hisi_sas_stop_phys(struct hisi_hba *hisi_hba);
extern int hisi_sas_alloc(struct hisi_hba *hisi_hba, struct Scsi_Host *shost);
extern void hisi_sas_free(struct hisi_hba *hisi_hba);
extern u8 hisi_sas_get_ata_protocol(struct host_to_dev_fis *fis,
int direction);
extern struct hisi_sas_port *to_hisi_sas_port(struct asd_sas_port *sas_port);
extern void hisi_sas_sata_done(struct sas_task *task,
struct hisi_sas_slot *slot);
extern int hisi_sas_get_ncq_tag(struct sas_task *task, u32 *tag);
extern int hisi_sas_get_fw_info(struct hisi_hba *hisi_hba);
extern int hisi_sas_probe(struct platform_device *pdev,
const struct hisi_sas_hw *ops);
extern int hisi_sas_remove(struct platform_device *pdev);
extern int hisi_sas_slave_configure(struct scsi_device *sdev);
extern int hisi_sas_scan_finished(struct Scsi_Host *shost, unsigned long time);
extern void hisi_sas_scan_start(struct Scsi_Host *shost);
extern int hisi_sas_host_reset(struct Scsi_Host *shost, int reset_type);
extern void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy);
extern void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba,
struct sas_task *task,
struct hisi_sas_slot *slot);
extern void hisi_sas_init_mem(struct hisi_hba *hisi_hba);
extern void hisi_sas_rst_work_handler(struct work_struct *work);
extern void hisi_sas_sync_rst_work_handler(struct work_struct *work);
extern void hisi_sas_kill_tasklets(struct hisi_hba *hisi_hba);
extern bool hisi_sas_notify_phy_event(struct hisi_sas_phy *phy,
enum hisi_sas_phy_event event);
extern void hisi_sas_release_tasks(struct hisi_hba *hisi_hba);
extern u8 hisi_sas_get_prog_phy_linkrate_mask(enum sas_linkrate max);
extern void hisi_sas_controller_reset_prepare(struct hisi_hba *hisi_hba);
extern void hisi_sas_controller_reset_done(struct hisi_hba *hisi_hba);
#endif