| /* |
| * 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/mfd/syscon.h> |
| #include <linux/module.h> |
| #include <linux/of_address.h> |
| #include <linux/platform_device.h> |
| #include <linux/property.h> |
| #include <linux/regmap.h> |
| #include <scsi/sas_ata.h> |
| #include <scsi/libsas.h> |
| |
| #define DRV_VERSION "v1.6" |
| |
| #define HISI_SAS_MAX_PHYS 9 |
| #define HISI_SAS_MAX_QUEUES 32 |
| #define HISI_SAS_QUEUE_SLOTS 512 |
| #define HISI_SAS_MAX_ITCT_ENTRIES 2048 |
| #define HISI_SAS_MAX_DEVICES HISI_SAS_MAX_ITCT_ENTRIES |
| #define HISI_SAS_RESET_BIT 0 |
| |
| #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_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)) |
| |
| 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_phy { |
| struct hisi_hba *hisi_hba; |
| struct hisi_sas_port *port; |
| struct asd_sas_phy sas_phy; |
| struct sas_identify identify; |
| struct timer_list timer; |
| struct work_struct phyup_ws; |
| u64 port_id; /* from hw */ |
| u64 dev_sas_addr; |
| u64 phy_type; |
| u64 frame_rcvd_size; |
| u8 frame_rcvd[32]; |
| u8 phy_attached; |
| u8 reserved[3]; |
| 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 hisi_sas_slot *slot_prep; |
| spinlock_t lock; |
| int wr_point; |
| int id; |
| }; |
| |
| struct hisi_sas_device { |
| struct hisi_hba *hisi_hba; |
| struct domain_device *sas_device; |
| struct hisi_sas_dq *dq; |
| struct list_head list; |
| u64 attached_phy; |
| atomic64_t running_req; |
| enum sas_device_type dev_type; |
| int device_id; |
| int sata_idx; |
| u8 dev_status; |
| }; |
| |
| struct hisi_sas_slot { |
| struct list_head entry; |
| 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 idx; |
| int abort; |
| void *cmd_hdr; |
| dma_addr_t cmd_hdr_dma; |
| void *status_buffer; |
| dma_addr_t status_buffer_dma; |
| void *command_table; |
| dma_addr_t command_table_dma; |
| struct hisi_sas_sge_page *sge_page; |
| dma_addr_t sge_page_dma; |
| struct work_struct abort_slot; |
| struct timer_list internal_abort_timer; |
| }; |
| |
| struct hisi_sas_tmf_task { |
| u8 tmf; |
| u16 tag_of_task_to_be_managed; |
| }; |
| |
| 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, int *slot_idx, |
| 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); |
| int (*prep_ssp)(struct hisi_hba *hisi_hba, |
| struct hisi_sas_slot *slot, int is_tmf, |
| struct hisi_sas_tmf_task *tmf); |
| int (*prep_smp)(struct hisi_hba *hisi_hba, |
| struct hisi_sas_slot *slot); |
| int (*prep_stp)(struct hisi_hba *hisi_hba, |
| struct hisi_sas_slot *slot); |
| int (*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_enable)(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 (*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 (*free_device)(struct hisi_hba *hisi_hba, |
| struct hisi_sas_device *dev); |
| int (*get_wideport_bitmap)(struct hisi_hba *hisi_hba, int port_id); |
| int (*soft_reset)(struct hisi_hba *hisi_hba); |
| int max_command_entries; |
| 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; |
| u32 refclk_frequency_mhz; |
| u8 sas_addr[SAS_ADDR_SIZE]; |
| |
| int n_phy; |
| spinlock_t lock; |
| |
| struct timer_list timer; |
| struct workqueue_struct *wq; |
| |
| int slot_index_count; |
| 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 dma_pool *sge_page_pool; |
| struct hisi_sas_device devices[HISI_SAS_MAX_DEVICES]; |
| 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; |
| 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; |
| }; |
| |
| /* 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]; /*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 SG_CHUNK_SIZE |
| 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; |
| }; |
| |
| extern struct hisi_sas_port *to_hisi_sas_port(struct asd_sas_port *sas_port); |
| 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 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_rescan_topology(struct hisi_hba *hisi_hba, u32 old_state, |
| u32 state); |
| #endif |