2 * Copyright (c) 2015 Linaro Ltd.
3 * Copyright (c) 2015 Hisilicon Limited.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
15 #include <linux/dmapool.h>
16 #include <linux/mfd/syscon.h>
17 #include <linux/module.h>
18 #include <linux/of_address.h>
19 #include <linux/platform_device.h>
20 #include <linux/regmap.h>
21 #include <scsi/libsas.h>
23 #define DRV_VERSION "v1.0"
25 #define HISI_SAS_MAX_PHYS 9
26 #define HISI_SAS_MAX_QUEUES 32
27 #define HISI_SAS_QUEUE_SLOTS 512
28 #define HISI_SAS_MAX_ITCT_ENTRIES 4096
29 #define HISI_SAS_MAX_DEVICES HISI_SAS_MAX_ITCT_ENTRIES
31 #define HISI_SAS_STATUS_BUF_SZ \
32 (sizeof(struct hisi_sas_err_record) + 1024)
33 #define HISI_SAS_COMMAND_TABLE_SZ \
34 (((sizeof(union hisi_sas_command_table)+3)/4)*4)
36 #define HISI_SAS_MAX_SSP_RESP_SZ (sizeof(struct ssp_frame_hdr) + 1024)
37 #define HISI_SAS_MAX_SMP_RESP_SZ 1028
39 #define DEV_IS_EXPANDER(type) \
40 ((type == SAS_EDGE_EXPANDER_DEVICE) || \
41 (type == SAS_FANOUT_EXPANDER_DEVICE))
46 PORT_TYPE_SAS = (1U << 1),
47 PORT_TYPE_SATA = (1U << 0),
55 enum hisi_sas_dev_type {
56 HISI_SAS_DEV_TYPE_STP = 0,
57 HISI_SAS_DEV_TYPE_SSP,
58 HISI_SAS_DEV_TYPE_SATA,
62 struct hisi_hba *hisi_hba;
63 struct hisi_sas_port *port;
64 struct asd_sas_phy sas_phy;
65 struct sas_identify identify;
66 struct timer_list timer;
67 struct work_struct phyup_ws;
68 u64 port_id; /* from hw */
75 enum sas_linkrate minimum_linkrate;
76 enum sas_linkrate maximum_linkrate;
79 struct hisi_sas_port {
80 struct asd_sas_port sas_port;
83 struct list_head list;
87 struct hisi_hba *hisi_hba;
91 struct hisi_sas_device {
92 enum sas_device_type dev_type;
93 struct hisi_hba *hisi_hba;
94 struct domain_device *sas_device;
101 struct hisi_sas_slot {
102 struct list_head entry;
103 struct sas_task *task;
104 struct hisi_sas_port *port;
107 int dlvry_queue_slot;
109 int cmplt_queue_slot;
112 dma_addr_t cmd_hdr_dma;
114 dma_addr_t status_buffer_dma;
116 dma_addr_t command_table_dma;
117 struct hisi_sas_sge_page *sge_page;
118 dma_addr_t sge_page_dma;
121 struct hisi_sas_tmf_task {
123 u16 tag_of_task_to_be_managed;
127 int (*hw_init)(struct hisi_hba *hisi_hba);
128 void (*setup_itct)(struct hisi_hba *hisi_hba,
129 struct hisi_sas_device *device);
130 void (*sl_notify)(struct hisi_hba *hisi_hba, int phy_no);
131 int (*get_free_slot)(struct hisi_hba *hisi_hba, int *q, int *s);
132 void (*start_delivery)(struct hisi_hba *hisi_hba);
133 int (*prep_ssp)(struct hisi_hba *hisi_hba,
134 struct hisi_sas_slot *slot, int is_tmf,
135 struct hisi_sas_tmf_task *tmf);
136 int (*prep_smp)(struct hisi_hba *hisi_hba,
137 struct hisi_sas_slot *slot);
138 int (*slot_complete)(struct hisi_hba *hisi_hba,
139 struct hisi_sas_slot *slot, int abort);
140 void (*phy_enable)(struct hisi_hba *hisi_hba, int phy_no);
141 void (*phy_disable)(struct hisi_hba *hisi_hba, int phy_no);
142 void (*phy_hard_reset)(struct hisi_hba *hisi_hba, int phy_no);
143 void (*free_device)(struct hisi_hba *hisi_hba,
144 struct hisi_sas_device *dev);
145 int (*get_wideport_bitmap)(struct hisi_hba *hisi_hba, int port_id);
146 int max_command_entries;
147 int complete_hdr_size;
151 /* This must be the first element, used by SHOST_TO_SAS_HA */
152 struct sas_ha_struct *p;
154 struct platform_device *pdev;
158 u32 ctrl_reset_sts_reg;
159 u32 ctrl_clock_ena_reg;
160 u8 sas_addr[SAS_ADDR_SIZE];
166 struct timer_list timer;
167 struct workqueue_struct *wq;
169 int slot_index_count;
170 unsigned long *slot_index_tags;
173 struct sas_ha_struct sha;
174 struct Scsi_Host *shost;
176 struct hisi_sas_cq cq[HISI_SAS_MAX_QUEUES];
177 struct hisi_sas_phy phy[HISI_SAS_MAX_PHYS];
178 struct hisi_sas_port port[HISI_SAS_MAX_PHYS];
182 struct hisi_sas_slot *slot_prep;
184 struct dma_pool *sge_page_pool;
185 struct hisi_sas_device devices[HISI_SAS_MAX_DEVICES];
186 struct dma_pool *command_table_pool;
187 struct dma_pool *status_buffer_pool;
188 struct hisi_sas_cmd_hdr *cmd_hdr[HISI_SAS_MAX_QUEUES];
189 dma_addr_t cmd_hdr_dma[HISI_SAS_MAX_QUEUES];
190 void *complete_hdr[HISI_SAS_MAX_QUEUES];
191 dma_addr_t complete_hdr_dma[HISI_SAS_MAX_QUEUES];
192 struct hisi_sas_initial_fis *initial_fis;
193 dma_addr_t initial_fis_dma;
194 struct hisi_sas_itct *itct;
196 struct hisi_sas_iost *iost;
198 struct hisi_sas_breakpoint *breakpoint;
199 dma_addr_t breakpoint_dma;
200 struct hisi_sas_breakpoint *sata_breakpoint;
201 dma_addr_t sata_breakpoint_dma;
202 struct hisi_sas_slot *slot_info;
203 const struct hisi_sas_hw *hw; /* Low level hw interface */
206 /* Generic HW DMA host memory structures */
207 /* Delivery queue header */
208 struct hisi_sas_cmd_hdr {
219 __le32 transfer_tags;
222 __le32 data_transfer_len;
225 __le32 first_burst_num;
234 __le64 cmd_table_addr;
237 __le64 sts_buffer_addr;
240 __le64 prd_table_addr;
243 __le64 dif_prd_table_addr;
246 struct hisi_sas_itct {
252 __le64 qw_sata_ncq0_3;
253 __le64 qw_sata_ncq7_4;
254 __le64 qw_sata_ncq11_8;
255 __le64 qw_sata_ncq15_12;
256 __le64 qw_sata_ncq19_16;
257 __le64 qw_sata_ncq23_20;
258 __le64 qw_sata_ncq27_24;
259 __le64 qw_sata_ncq31_28;
260 __le64 qw_non_ncq_iptt;
265 struct hisi_sas_iost {
272 struct hisi_sas_err_record {
277 __le32 trans_tx_fail_type;
280 __le32 trans_rx_fail_type;
286 struct hisi_sas_initial_fis {
287 struct hisi_sas_err_record err_record;
288 struct dev_to_host_fis fis;
292 struct hisi_sas_breakpoint {
293 u8 data[128]; /*io128 byte*/
296 struct hisi_sas_sge {
304 struct hisi_sas_command_table_smp {
308 struct hisi_sas_command_table_stp {
309 struct host_to_dev_fis command_fis;
311 u8 atapi_cdb[ATAPI_CDB_LEN];
314 #define HISI_SAS_SGE_PAGE_CNT SCSI_MAX_SG_SEGMENTS
315 struct hisi_sas_sge_page {
316 struct hisi_sas_sge sge[HISI_SAS_SGE_PAGE_CNT];
319 struct hisi_sas_command_table_ssp {
320 struct ssp_frame_hdr hdr;
323 struct ssp_command_iu task;
326 struct ssp_tmf_iu ssp_task;
327 struct xfer_rdy_iu xfer_rdy;
328 struct ssp_response_iu ssp_res;
332 union hisi_sas_command_table {
333 struct hisi_sas_command_table_ssp ssp;
334 struct hisi_sas_command_table_smp smp;
335 struct hisi_sas_command_table_stp stp;
337 extern int hisi_sas_probe(struct platform_device *pdev,
338 const struct hisi_sas_hw *ops);
339 extern int hisi_sas_remove(struct platform_device *pdev);
341 extern void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy);
342 extern void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba,
343 struct sas_task *task,
344 struct hisi_sas_slot *slot);