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