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e8899fad JG |
1 | /* |
2 | * Copyright (c) 2015 Linaro Ltd. | |
3 | * Copyright (c) 2015 Hisilicon Limited. | |
4 | * | |
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. | |
9 | * | |
10 | */ | |
11 | ||
12 | #ifndef _HISI_SAS_H_ | |
13 | #define _HISI_SAS_H_ | |
14 | ||
4d558c77 | 15 | #include <linux/acpi.h> |
3bc45af8 | 16 | #include <linux/clk.h> |
e8899fad JG |
17 | #include <linux/dmapool.h> |
18 | #include <linux/mfd/syscon.h> | |
19 | #include <linux/module.h> | |
20 | #include <linux/of_address.h> | |
e8899fad | 21 | #include <linux/platform_device.h> |
4d558c77 | 22 | #include <linux/property.h> |
e8899fad | 23 | #include <linux/regmap.h> |
6f2ff1a1 | 24 | #include <scsi/sas_ata.h> |
e8899fad JG |
25 | #include <scsi/libsas.h> |
26 | ||
6328d903 | 27 | #define DRV_VERSION "v1.6" |
e8899fad | 28 | |
7eb7869f | 29 | #define HISI_SAS_MAX_PHYS 9 |
6be6de18 JG |
30 | #define HISI_SAS_MAX_QUEUES 32 |
31 | #define HISI_SAS_QUEUE_SLOTS 512 | |
5560e9fb | 32 | #define HISI_SAS_MAX_ITCT_ENTRIES 2048 |
7eb7869f | 33 | #define HISI_SAS_MAX_DEVICES HISI_SAS_MAX_ITCT_ENTRIES |
06ec0fb9 | 34 | #define HISI_SAS_RESET_BIT 0 |
7eb7869f | 35 | |
6be6de18 JG |
36 | #define HISI_SAS_STATUS_BUF_SZ \ |
37 | (sizeof(struct hisi_sas_err_record) + 1024) | |
38 | #define HISI_SAS_COMMAND_TABLE_SZ \ | |
39 | (((sizeof(union hisi_sas_command_table)+3)/4)*4) | |
40 | ||
42e7a693 | 41 | #define HISI_SAS_MAX_SSP_RESP_SZ (sizeof(struct ssp_frame_hdr) + 1024) |
66ee999b | 42 | #define HISI_SAS_MAX_SMP_RESP_SZ 1028 |
6f2ff1a1 | 43 | #define HISI_SAS_MAX_STP_RESP_SZ 28 |
42e7a693 | 44 | |
98bf39fc JG |
45 | #define DEV_IS_EXPANDER(type) \ |
46 | ((type == SAS_EDGE_EXPANDER_DEVICE) || \ | |
47 | (type == SAS_FANOUT_EXPANDER_DEVICE)) | |
48 | ||
abda97c2 | 49 | struct hisi_hba; |
af740dbe | 50 | |
07d78592 JG |
51 | enum { |
52 | PORT_TYPE_SAS = (1U << 1), | |
53 | PORT_TYPE_SATA = (1U << 0), | |
54 | }; | |
55 | ||
af740dbe JG |
56 | enum dev_status { |
57 | HISI_SAS_DEV_NORMAL, | |
58 | HISI_SAS_DEV_EH, | |
59 | }; | |
abda97c2 | 60 | |
441c2740 JG |
61 | enum { |
62 | HISI_SAS_INT_ABT_CMD = 0, | |
63 | HISI_SAS_INT_ABT_DEV = 1, | |
64 | }; | |
65 | ||
abda97c2 JG |
66 | enum hisi_sas_dev_type { |
67 | HISI_SAS_DEV_TYPE_STP = 0, | |
68 | HISI_SAS_DEV_TYPE_SSP, | |
69 | HISI_SAS_DEV_TYPE_SATA, | |
70 | }; | |
71 | ||
7eb7869f | 72 | struct hisi_sas_phy { |
976867e6 JG |
73 | struct hisi_hba *hisi_hba; |
74 | struct hisi_sas_port *port; | |
7eb7869f | 75 | struct asd_sas_phy sas_phy; |
976867e6 JG |
76 | struct sas_identify identify; |
77 | struct timer_list timer; | |
66139921 | 78 | struct work_struct phyup_ws; |
976867e6 | 79 | u64 port_id; /* from hw */ |
5d74242e | 80 | u64 dev_sas_addr; |
976867e6 JG |
81 | u64 phy_type; |
82 | u64 frame_rcvd_size; | |
83 | u8 frame_rcvd[32]; | |
84 | u8 phy_attached; | |
85 | u8 reserved[3]; | |
86 | enum sas_linkrate minimum_linkrate; | |
87 | enum sas_linkrate maximum_linkrate; | |
7eb7869f JG |
88 | }; |
89 | ||
90 | struct hisi_sas_port { | |
91 | struct asd_sas_port sas_port; | |
976867e6 JG |
92 | u8 port_attached; |
93 | u8 id; /* from hw */ | |
7eb7869f JG |
94 | }; |
95 | ||
9101a079 JG |
96 | struct hisi_sas_cq { |
97 | struct hisi_hba *hisi_hba; | |
d177c408 | 98 | struct tasklet_struct tasklet; |
e6c346f3 | 99 | int rd_point; |
9101a079 JG |
100 | int id; |
101 | }; | |
102 | ||
4fde02ad JG |
103 | struct hisi_sas_dq { |
104 | struct hisi_hba *hisi_hba; | |
105 | int wr_point; | |
106 | int id; | |
107 | }; | |
108 | ||
af740dbe | 109 | struct hisi_sas_device { |
abda97c2 JG |
110 | struct hisi_hba *hisi_hba; |
111 | struct domain_device *sas_device; | |
ad604832 | 112 | struct list_head list; |
abda97c2 | 113 | u64 attached_phy; |
f696cc32 | 114 | atomic64_t running_req; |
ad604832 JG |
115 | enum sas_device_type dev_type; |
116 | int device_id; | |
32ccba52 | 117 | int sata_idx; |
ad604832 | 118 | u8 dev_status; |
af740dbe JG |
119 | }; |
120 | ||
6be6de18 | 121 | struct hisi_sas_slot { |
42e7a693 JG |
122 | struct list_head entry; |
123 | struct sas_task *task; | |
124 | struct hisi_sas_port *port; | |
125 | u64 n_elem; | |
126 | int dlvry_queue; | |
127 | int dlvry_queue_slot; | |
27a3f229 JG |
128 | int cmplt_queue; |
129 | int cmplt_queue_slot; | |
42e7a693 | 130 | int idx; |
cac9b2a2 | 131 | int abort; |
42e7a693 JG |
132 | void *cmd_hdr; |
133 | dma_addr_t cmd_hdr_dma; | |
134 | void *status_buffer; | |
135 | dma_addr_t status_buffer_dma; | |
136 | void *command_table; | |
137 | dma_addr_t command_table_dma; | |
138 | struct hisi_sas_sge_page *sge_page; | |
139 | dma_addr_t sge_page_dma; | |
cac9b2a2 | 140 | struct work_struct abort_slot; |
0844a3ff | 141 | struct timer_list internal_abort_timer; |
42e7a693 JG |
142 | }; |
143 | ||
144 | struct hisi_sas_tmf_task { | |
145 | u8 tmf; | |
146 | u16 tag_of_task_to_be_managed; | |
6be6de18 JG |
147 | }; |
148 | ||
7eb7869f | 149 | struct hisi_sas_hw { |
8ff1d571 | 150 | int (*hw_init)(struct hisi_hba *hisi_hba); |
abda97c2 JG |
151 | void (*setup_itct)(struct hisi_hba *hisi_hba, |
152 | struct hisi_sas_device *device); | |
685b6d6e JG |
153 | int (*slot_index_alloc)(struct hisi_hba *hisi_hba, int *slot_idx, |
154 | struct domain_device *device); | |
155 | struct hisi_sas_device *(*alloc_dev)(struct domain_device *device); | |
66139921 | 156 | void (*sl_notify)(struct hisi_hba *hisi_hba, int phy_no); |
c70f1fb7 XC |
157 | int (*get_free_slot)(struct hisi_hba *hisi_hba, u32 dev_id, |
158 | int *q, int *s); | |
42e7a693 JG |
159 | void (*start_delivery)(struct hisi_hba *hisi_hba); |
160 | int (*prep_ssp)(struct hisi_hba *hisi_hba, | |
161 | struct hisi_sas_slot *slot, int is_tmf, | |
162 | struct hisi_sas_tmf_task *tmf); | |
66ee999b JG |
163 | int (*prep_smp)(struct hisi_hba *hisi_hba, |
164 | struct hisi_sas_slot *slot); | |
6f2ff1a1 JG |
165 | int (*prep_stp)(struct hisi_hba *hisi_hba, |
166 | struct hisi_sas_slot *slot); | |
441c2740 JG |
167 | int (*prep_abort)(struct hisi_hba *hisi_hba, |
168 | struct hisi_sas_slot *slot, | |
169 | int device_id, int abort_flag, int tag_to_abort); | |
27a3f229 | 170 | int (*slot_complete)(struct hisi_hba *hisi_hba, |
405314df | 171 | struct hisi_sas_slot *slot); |
396b8044 | 172 | void (*phys_init)(struct hisi_hba *hisi_hba); |
e4189d53 JG |
173 | void (*phy_enable)(struct hisi_hba *hisi_hba, int phy_no); |
174 | void (*phy_disable)(struct hisi_hba *hisi_hba, int phy_no); | |
175 | void (*phy_hard_reset)(struct hisi_hba *hisi_hba, int phy_no); | |
2ae75787 XC |
176 | void (*phy_set_linkrate)(struct hisi_hba *hisi_hba, int phy_no, |
177 | struct sas_phy_linkrates *linkrates); | |
178 | enum sas_linkrate (*phy_get_max_linkrate)(void); | |
27a3f229 JG |
179 | void (*free_device)(struct hisi_hba *hisi_hba, |
180 | struct hisi_sas_device *dev); | |
184a4635 | 181 | int (*get_wideport_bitmap)(struct hisi_hba *hisi_hba, int port_id); |
06ec0fb9 | 182 | int (*soft_reset)(struct hisi_hba *hisi_hba); |
a8d547bd | 183 | int max_command_entries; |
6be6de18 | 184 | int complete_hdr_size; |
7eb7869f JG |
185 | }; |
186 | ||
187 | struct hisi_hba { | |
188 | /* This must be the first element, used by SHOST_TO_SAS_HA */ | |
189 | struct sas_ha_struct *p; | |
190 | ||
191 | struct platform_device *pdev; | |
e26b2f40 JG |
192 | void __iomem *regs; |
193 | struct regmap *ctrl; | |
194 | u32 ctrl_reset_reg; | |
195 | u32 ctrl_reset_sts_reg; | |
196 | u32 ctrl_clock_ena_reg; | |
3bc45af8 | 197 | u32 refclk_frequency_mhz; |
7eb7869f JG |
198 | u8 sas_addr[SAS_ADDR_SIZE]; |
199 | ||
200 | int n_phy; | |
fa42d80d | 201 | spinlock_t lock; |
7eb7869f | 202 | |
fa42d80d | 203 | struct timer_list timer; |
7e9080e1 | 204 | struct workqueue_struct *wq; |
257efd1f JG |
205 | |
206 | int slot_index_count; | |
207 | unsigned long *slot_index_tags; | |
c7b9d369 | 208 | unsigned long reject_stp_links_msk; |
257efd1f | 209 | |
7eb7869f JG |
210 | /* SCSI/SAS glue */ |
211 | struct sas_ha_struct sha; | |
212 | struct Scsi_Host *shost; | |
9101a079 JG |
213 | |
214 | struct hisi_sas_cq cq[HISI_SAS_MAX_QUEUES]; | |
4fde02ad | 215 | struct hisi_sas_dq dq[HISI_SAS_MAX_QUEUES]; |
7eb7869f JG |
216 | struct hisi_sas_phy phy[HISI_SAS_MAX_PHYS]; |
217 | struct hisi_sas_port port[HISI_SAS_MAX_PHYS]; | |
e26b2f40 JG |
218 | |
219 | int queue_count; | |
42e7a693 | 220 | struct hisi_sas_slot *slot_prep; |
6be6de18 JG |
221 | |
222 | struct dma_pool *sge_page_pool; | |
af740dbe | 223 | struct hisi_sas_device devices[HISI_SAS_MAX_DEVICES]; |
6be6de18 JG |
224 | struct dma_pool *command_table_pool; |
225 | struct dma_pool *status_buffer_pool; | |
226 | struct hisi_sas_cmd_hdr *cmd_hdr[HISI_SAS_MAX_QUEUES]; | |
227 | dma_addr_t cmd_hdr_dma[HISI_SAS_MAX_QUEUES]; | |
228 | void *complete_hdr[HISI_SAS_MAX_QUEUES]; | |
229 | dma_addr_t complete_hdr_dma[HISI_SAS_MAX_QUEUES]; | |
230 | struct hisi_sas_initial_fis *initial_fis; | |
231 | dma_addr_t initial_fis_dma; | |
232 | struct hisi_sas_itct *itct; | |
233 | dma_addr_t itct_dma; | |
234 | struct hisi_sas_iost *iost; | |
235 | dma_addr_t iost_dma; | |
236 | struct hisi_sas_breakpoint *breakpoint; | |
237 | dma_addr_t breakpoint_dma; | |
238 | struct hisi_sas_breakpoint *sata_breakpoint; | |
239 | dma_addr_t sata_breakpoint_dma; | |
240 | struct hisi_sas_slot *slot_info; | |
06ec0fb9 | 241 | unsigned long flags; |
7eb7869f | 242 | const struct hisi_sas_hw *hw; /* Low level hw interface */ |
32ccba52 | 243 | unsigned long sata_dev_bitmap[BITS_TO_LONGS(HISI_SAS_MAX_DEVICES)]; |
06ec0fb9 | 244 | struct work_struct rst_work; |
7eb7869f JG |
245 | }; |
246 | ||
c799d6bd JG |
247 | /* Generic HW DMA host memory structures */ |
248 | /* Delivery queue header */ | |
249 | struct hisi_sas_cmd_hdr { | |
250 | /* dw0 */ | |
251 | __le32 dw0; | |
252 | ||
253 | /* dw1 */ | |
254 | __le32 dw1; | |
255 | ||
256 | /* dw2 */ | |
257 | __le32 dw2; | |
258 | ||
259 | /* dw3 */ | |
260 | __le32 transfer_tags; | |
261 | ||
262 | /* dw4 */ | |
263 | __le32 data_transfer_len; | |
264 | ||
265 | /* dw5 */ | |
266 | __le32 first_burst_num; | |
267 | ||
268 | /* dw6 */ | |
269 | __le32 sg_len; | |
270 | ||
271 | /* dw7 */ | |
272 | __le32 dw7; | |
273 | ||
274 | /* dw8-9 */ | |
275 | __le64 cmd_table_addr; | |
276 | ||
277 | /* dw10-11 */ | |
278 | __le64 sts_buffer_addr; | |
279 | ||
280 | /* dw12-13 */ | |
281 | __le64 prd_table_addr; | |
282 | ||
283 | /* dw14-15 */ | |
284 | __le64 dif_prd_table_addr; | |
285 | }; | |
286 | ||
287 | struct hisi_sas_itct { | |
288 | __le64 qw0; | |
289 | __le64 sas_addr; | |
290 | __le64 qw2; | |
291 | __le64 qw3; | |
281e3bf6 | 292 | __le64 qw4_15[12]; |
c799d6bd JG |
293 | }; |
294 | ||
295 | struct hisi_sas_iost { | |
296 | __le64 qw0; | |
297 | __le64 qw1; | |
298 | __le64 qw2; | |
299 | __le64 qw3; | |
300 | }; | |
301 | ||
302 | struct hisi_sas_err_record { | |
8d1eee7d | 303 | u32 data[4]; |
c799d6bd JG |
304 | }; |
305 | ||
306 | struct hisi_sas_initial_fis { | |
307 | struct hisi_sas_err_record err_record; | |
308 | struct dev_to_host_fis fis; | |
309 | u32 rsvd[3]; | |
310 | }; | |
311 | ||
312 | struct hisi_sas_breakpoint { | |
313 | u8 data[128]; /*io128 byte*/ | |
314 | }; | |
315 | ||
316 | struct hisi_sas_sge { | |
317 | __le64 addr; | |
318 | __le32 page_ctrl_0; | |
319 | __le32 page_ctrl_1; | |
320 | __le32 data_len; | |
321 | __le32 data_off; | |
322 | }; | |
323 | ||
324 | struct hisi_sas_command_table_smp { | |
325 | u8 bytes[44]; | |
326 | }; | |
327 | ||
328 | struct hisi_sas_command_table_stp { | |
329 | struct host_to_dev_fis command_fis; | |
330 | u8 dummy[12]; | |
331 | u8 atapi_cdb[ATAPI_CDB_LEN]; | |
332 | }; | |
333 | ||
65e8617f | 334 | #define HISI_SAS_SGE_PAGE_CNT SG_CHUNK_SIZE |
c799d6bd JG |
335 | struct hisi_sas_sge_page { |
336 | struct hisi_sas_sge sge[HISI_SAS_SGE_PAGE_CNT]; | |
337 | }; | |
338 | ||
339 | struct hisi_sas_command_table_ssp { | |
340 | struct ssp_frame_hdr hdr; | |
341 | union { | |
342 | struct { | |
343 | struct ssp_command_iu task; | |
344 | u32 prot[6]; | |
345 | }; | |
346 | struct ssp_tmf_iu ssp_task; | |
347 | struct xfer_rdy_iu xfer_rdy; | |
348 | struct ssp_response_iu ssp_res; | |
349 | } u; | |
350 | }; | |
351 | ||
352 | union hisi_sas_command_table { | |
353 | struct hisi_sas_command_table_ssp ssp; | |
354 | struct hisi_sas_command_table_smp smp; | |
355 | struct hisi_sas_command_table_stp stp; | |
356 | }; | |
2e244f0f JG |
357 | |
358 | extern struct hisi_sas_port *to_hisi_sas_port(struct asd_sas_port *sas_port); | |
9fb10b54 JG |
359 | extern int hisi_sas_probe(struct platform_device *pdev, |
360 | const struct hisi_sas_hw *ops); | |
361 | extern int hisi_sas_remove(struct platform_device *pdev); | |
c799d6bd | 362 | |
184a4635 | 363 | extern void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy); |
27a3f229 JG |
364 | extern void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, |
365 | struct sas_task *task, | |
366 | struct hisi_sas_slot *slot); | |
06ec0fb9 XC |
367 | extern void hisi_sas_init_mem(struct hisi_hba *hisi_hba); |
368 | extern void hisi_sas_rescan_topology(struct hisi_hba *hisi_hba, u32 old_state, | |
369 | u32 state); | |
e8899fad | 370 | #endif |