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/clk.h>
17 #include <linux/dmapool.h>
18 #include <linux/mfd/syscon.h>
19 #include <linux/module.h>
20 #include <linux/of_address.h>
21 #include <linux/platform_device.h>
22 #include <linux/property.h>
23 #include <linux/regmap.h>
24 #include <scsi/sas_ata.h>
25 #include <scsi/libsas.h>
27 #define DRV_VERSION "v1.6"
29 #define HISI_SAS_MAX_PHYS 9
30 #define HISI_SAS_MAX_QUEUES 32
31 #define HISI_SAS_QUEUE_SLOTS 512
32 #define HISI_SAS_MAX_ITCT_ENTRIES 2048
33 #define HISI_SAS_MAX_DEVICES HISI_SAS_MAX_ITCT_ENTRIES
34 #define HISI_SAS_RESET_BIT 0
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)
41 #define HISI_SAS_MAX_SSP_RESP_SZ (sizeof(struct ssp_frame_hdr) + 1024)
42 #define HISI_SAS_MAX_SMP_RESP_SZ 1028
43 #define HISI_SAS_MAX_STP_RESP_SZ 28
45 #define DEV_IS_EXPANDER(type) \
46 ((type == SAS_EDGE_EXPANDER_DEVICE) || \
47 (type == SAS_FANOUT_EXPANDER_DEVICE))
52 PORT_TYPE_SAS = (1U << 1),
53 PORT_TYPE_SATA = (1U << 0),
62 HISI_SAS_INT_ABT_CMD = 0,
63 HISI_SAS_INT_ABT_DEV = 1,
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,
73 struct hisi_hba *hisi_hba;
74 struct hisi_sas_port *port;
75 struct asd_sas_phy sas_phy;
76 struct sas_identify identify;
77 struct timer_list timer;
78 struct work_struct phyup_ws;
79 u64 port_id; /* from hw */
86 enum sas_linkrate minimum_linkrate;
87 enum sas_linkrate maximum_linkrate;
90 struct hisi_sas_port {
91 struct asd_sas_port sas_port;
94 struct list_head list;
98 struct hisi_hba *hisi_hba;
99 struct tasklet_struct tasklet;
105 struct hisi_hba *hisi_hba;
110 struct hisi_sas_device {
111 enum sas_device_type dev_type;
112 struct hisi_hba *hisi_hba;
113 struct domain_device *sas_device;
116 atomic64_t running_req;
120 struct hisi_sas_slot {
121 struct list_head entry;
122 struct sas_task *task;
123 struct hisi_sas_port *port;
126 int dlvry_queue_slot;
128 int cmplt_queue_slot;
132 dma_addr_t cmd_hdr_dma;
134 dma_addr_t status_buffer_dma;
136 dma_addr_t command_table_dma;
137 struct hisi_sas_sge_page *sge_page;
138 dma_addr_t sge_page_dma;
139 struct work_struct abort_slot;
142 struct hisi_sas_tmf_task {
144 u16 tag_of_task_to_be_managed;
148 int (*hw_init)(struct hisi_hba *hisi_hba);
149 void (*setup_itct)(struct hisi_hba *hisi_hba,
150 struct hisi_sas_device *device);
151 int (*slot_index_alloc)(struct hisi_hba *hisi_hba, int *slot_idx,
152 struct domain_device *device);
153 struct hisi_sas_device *(*alloc_dev)(struct domain_device *device);
154 void (*sl_notify)(struct hisi_hba *hisi_hba, int phy_no);
155 int (*get_free_slot)(struct hisi_hba *hisi_hba, u32 dev_id,
157 void (*start_delivery)(struct hisi_hba *hisi_hba);
158 int (*prep_ssp)(struct hisi_hba *hisi_hba,
159 struct hisi_sas_slot *slot, int is_tmf,
160 struct hisi_sas_tmf_task *tmf);
161 int (*prep_smp)(struct hisi_hba *hisi_hba,
162 struct hisi_sas_slot *slot);
163 int (*prep_stp)(struct hisi_hba *hisi_hba,
164 struct hisi_sas_slot *slot);
165 int (*prep_abort)(struct hisi_hba *hisi_hba,
166 struct hisi_sas_slot *slot,
167 int device_id, int abort_flag, int tag_to_abort);
168 int (*slot_complete)(struct hisi_hba *hisi_hba,
169 struct hisi_sas_slot *slot, int abort);
170 void (*phys_init)(struct hisi_hba *hisi_hba);
171 void (*phy_enable)(struct hisi_hba *hisi_hba, int phy_no);
172 void (*phy_disable)(struct hisi_hba *hisi_hba, int phy_no);
173 void (*phy_hard_reset)(struct hisi_hba *hisi_hba, int phy_no);
174 void (*phy_set_linkrate)(struct hisi_hba *hisi_hba, int phy_no,
175 struct sas_phy_linkrates *linkrates);
176 enum sas_linkrate (*phy_get_max_linkrate)(void);
177 void (*free_device)(struct hisi_hba *hisi_hba,
178 struct hisi_sas_device *dev);
179 int (*get_wideport_bitmap)(struct hisi_hba *hisi_hba, int port_id);
180 int (*soft_reset)(struct hisi_hba *hisi_hba);
181 int max_command_entries;
182 int complete_hdr_size;
186 /* This must be the first element, used by SHOST_TO_SAS_HA */
187 struct sas_ha_struct *p;
189 struct platform_device *pdev;
193 u32 ctrl_reset_sts_reg;
194 u32 ctrl_clock_ena_reg;
195 u32 refclk_frequency_mhz;
196 u8 sas_addr[SAS_ADDR_SIZE];
201 struct timer_list timer;
202 struct workqueue_struct *wq;
204 int slot_index_count;
205 unsigned long *slot_index_tags;
208 struct sas_ha_struct sha;
209 struct Scsi_Host *shost;
211 struct hisi_sas_cq cq[HISI_SAS_MAX_QUEUES];
212 struct hisi_sas_dq dq[HISI_SAS_MAX_QUEUES];
213 struct hisi_sas_phy phy[HISI_SAS_MAX_PHYS];
214 struct hisi_sas_port port[HISI_SAS_MAX_PHYS];
217 struct hisi_sas_slot *slot_prep;
219 struct dma_pool *sge_page_pool;
220 struct hisi_sas_device devices[HISI_SAS_MAX_DEVICES];
221 struct dma_pool *command_table_pool;
222 struct dma_pool *status_buffer_pool;
223 struct hisi_sas_cmd_hdr *cmd_hdr[HISI_SAS_MAX_QUEUES];
224 dma_addr_t cmd_hdr_dma[HISI_SAS_MAX_QUEUES];
225 void *complete_hdr[HISI_SAS_MAX_QUEUES];
226 dma_addr_t complete_hdr_dma[HISI_SAS_MAX_QUEUES];
227 struct hisi_sas_initial_fis *initial_fis;
228 dma_addr_t initial_fis_dma;
229 struct hisi_sas_itct *itct;
231 struct hisi_sas_iost *iost;
233 struct hisi_sas_breakpoint *breakpoint;
234 dma_addr_t breakpoint_dma;
235 struct hisi_sas_breakpoint *sata_breakpoint;
236 dma_addr_t sata_breakpoint_dma;
237 struct hisi_sas_slot *slot_info;
239 const struct hisi_sas_hw *hw; /* Low level hw interface */
240 struct work_struct rst_work;
243 /* Generic HW DMA host memory structures */
244 /* Delivery queue header */
245 struct hisi_sas_cmd_hdr {
256 __le32 transfer_tags;
259 __le32 data_transfer_len;
262 __le32 first_burst_num;
271 __le64 cmd_table_addr;
274 __le64 sts_buffer_addr;
277 __le64 prd_table_addr;
280 __le64 dif_prd_table_addr;
283 struct hisi_sas_itct {
291 struct hisi_sas_iost {
298 struct hisi_sas_err_record {
302 struct hisi_sas_initial_fis {
303 struct hisi_sas_err_record err_record;
304 struct dev_to_host_fis fis;
308 struct hisi_sas_breakpoint {
309 u8 data[128]; /*io128 byte*/
312 struct hisi_sas_sge {
320 struct hisi_sas_command_table_smp {
324 struct hisi_sas_command_table_stp {
325 struct host_to_dev_fis command_fis;
327 u8 atapi_cdb[ATAPI_CDB_LEN];
330 #define HISI_SAS_SGE_PAGE_CNT SG_CHUNK_SIZE
331 struct hisi_sas_sge_page {
332 struct hisi_sas_sge sge[HISI_SAS_SGE_PAGE_CNT];
335 struct hisi_sas_command_table_ssp {
336 struct ssp_frame_hdr hdr;
339 struct ssp_command_iu task;
342 struct ssp_tmf_iu ssp_task;
343 struct xfer_rdy_iu xfer_rdy;
344 struct ssp_response_iu ssp_res;
348 union hisi_sas_command_table {
349 struct hisi_sas_command_table_ssp ssp;
350 struct hisi_sas_command_table_smp smp;
351 struct hisi_sas_command_table_stp stp;
354 extern struct hisi_sas_port *to_hisi_sas_port(struct asd_sas_port *sas_port);
355 extern int hisi_sas_probe(struct platform_device *pdev,
356 const struct hisi_sas_hw *ops);
357 extern int hisi_sas_remove(struct platform_device *pdev);
359 extern void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy);
360 extern void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba,
361 struct sas_task *task,
362 struct hisi_sas_slot *slot);
363 extern void hisi_sas_init_mem(struct hisi_hba *hisi_hba);
364 extern void hisi_sas_rescan_topology(struct hisi_hba *hisi_hba, u32 old_state,