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/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>
26 #define DRV_VERSION "v1.6"
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
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)
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
43 #define DEV_IS_EXPANDER(type) \
44 ((type == SAS_EDGE_EXPANDER_DEVICE) || \
45 (type == SAS_FANOUT_EXPANDER_DEVICE))
50 PORT_TYPE_SAS = (1U << 1),
51 PORT_TYPE_SATA = (1U << 0),
60 HISI_SAS_INT_ABT_CMD = 0,
61 HISI_SAS_INT_ABT_DEV = 1,
64 enum hisi_sas_dev_type {
65 HISI_SAS_DEV_TYPE_STP = 0,
66 HISI_SAS_DEV_TYPE_SSP,
67 HISI_SAS_DEV_TYPE_SATA,
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; /* from hw */
84 enum sas_linkrate minimum_linkrate;
85 enum sas_linkrate maximum_linkrate;
88 struct hisi_sas_port {
89 struct asd_sas_port sas_port;
92 struct list_head list;
96 struct hisi_hba *hisi_hba;
102 struct hisi_hba *hisi_hba;
107 struct hisi_sas_device {
108 enum sas_device_type dev_type;
109 struct hisi_hba *hisi_hba;
110 struct domain_device *sas_device;
117 struct hisi_sas_slot {
118 struct list_head entry;
119 struct sas_task *task;
120 struct hisi_sas_port *port;
123 int dlvry_queue_slot;
125 int cmplt_queue_slot;
129 dma_addr_t cmd_hdr_dma;
131 dma_addr_t status_buffer_dma;
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;
139 struct hisi_sas_tmf_task {
141 u16 tag_of_task_to_be_managed;
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;
177 /* This must be the first element, used by SHOST_TO_SAS_HA */
178 struct sas_ha_struct *p;
180 struct platform_device *pdev;
184 u32 ctrl_reset_sts_reg;
185 u32 ctrl_clock_ena_reg;
186 u8 sas_addr[SAS_ADDR_SIZE];
192 struct timer_list timer;
193 struct workqueue_struct *wq;
195 int slot_index_count;
196 unsigned long *slot_index_tags;
199 struct sas_ha_struct sha;
200 struct Scsi_Host *shost;
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];
209 struct hisi_sas_slot *slot_prep;
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;
223 struct hisi_sas_iost *iost;
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; /* Low level hw interface */
233 /* Generic HW DMA host memory structures */
234 /* Delivery queue header */
235 struct hisi_sas_cmd_hdr {
246 __le32 transfer_tags;
249 __le32 data_transfer_len;
252 __le32 first_burst_num;
261 __le64 cmd_table_addr;
264 __le64 sts_buffer_addr;
267 __le64 prd_table_addr;
270 __le64 dif_prd_table_addr;
273 struct hisi_sas_itct {
281 struct hisi_sas_iost {
288 struct hisi_sas_err_record {
292 struct hisi_sas_initial_fis {
293 struct hisi_sas_err_record err_record;
294 struct dev_to_host_fis fis;
298 struct hisi_sas_breakpoint {
299 u8 data[128]; /*io128 byte*/
302 struct hisi_sas_sge {
310 struct hisi_sas_command_table_smp {
314 struct hisi_sas_command_table_stp {
315 struct host_to_dev_fis command_fis;
317 u8 atapi_cdb[ATAPI_CDB_LEN];
320 #define HISI_SAS_SGE_PAGE_CNT SG_CHUNK_SIZE
321 struct hisi_sas_sge_page {
322 struct hisi_sas_sge sge[HISI_SAS_SGE_PAGE_CNT];
325 struct hisi_sas_command_table_ssp {
326 struct ssp_frame_hdr hdr;
329 struct ssp_command_iu task;
332 struct ssp_tmf_iu ssp_task;
333 struct xfer_rdy_iu xfer_rdy;
334 struct ssp_response_iu ssp_res;
338 union 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;
343 extern int hisi_sas_probe(struct platform_device *pdev,
344 const struct hisi_sas_hw *ops);
345 extern int hisi_sas_remove(struct platform_device *pdev);
347 extern void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy);
348 extern void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba,
349 struct sas_task *task,
350 struct hisi_sas_slot *slot);